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author | Jelmer Vernooij <jelmer@samba.org> | 2005-05-05 22:38:51 +0000 |
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committer | Gerald W. Carter <jerry@samba.org> | 2008-04-23 08:46:33 -0500 |
commit | eb2c5fedfaaab62ac84bd7ea4e62b55269d8368d (patch) | |
tree | cbc35b2a1c951e2ba5b5e884b154fc170dd4b4fa /docs/manpages-3 | |
parent | 406ee13608aca5e587ebf889c2f6b648c4cbe84b (diff) | |
download | samba-eb2c5fedfaaab62ac84bd7ea4e62b55269d8368d.tar.gz samba-eb2c5fedfaaab62ac84bd7ea4e62b55269d8368d.tar.bz2 samba-eb2c5fedfaaab62ac84bd7ea4e62b55269d8368d.zip |
Move existing samba4 documentation to Samba-docs trunk
(This used to be commit ee3dfdcf09d6a657cf7e7325f10aa3154867c351)
Diffstat (limited to 'docs/manpages-3')
-rw-r--r-- | docs/manpages-3/smb.conf.5.xml | 8408 |
1 files changed, 7782 insertions, 626 deletions
diff --git a/docs/manpages-3/smb.conf.5.xml b/docs/manpages-3/smb.conf.5.xml index ad9e3fbe97..ba010de317 100644 --- a/docs/manpages-3/smb.conf.5.xml +++ b/docs/manpages-3/smb.conf.5.xml @@ -1,656 +1,7812 @@ -<refentry id="smb.conf.5" xmlns:xi="http://www.w3.org/2003/XInclude"> - -<refmeta> - <refentrytitle>smb.conf</refentrytitle> - <manvolnum>5</manvolnum> -</refmeta> - - -<refnamediv> - <refname>smb.conf</refname> - <refpurpose>The configuration file for the Samba suite</refpurpose> -</refnamediv> - -<refsect1> - <title>SYNOPSIS</title> - - <para>The <filename moreinfo="none">smb.conf</filename> file is a configuration - file for the Samba suite. <filename moreinfo="none">smb.conf</filename> contains - runtime configuration information for the Samba programs. The <filename moreinfo="none">smb.conf</filename> file - is designed to be configured and administered by the <citerefentry><refentrytitle>swat</refentrytitle> - <manvolnum>8</manvolnum></citerefentry> program. The complete - description of the file format and possible parameters held within - are here for reference purposes.</para> </refsect1> - -<refsect1 id="FILEFORMATSECT"> - <title>FILE FORMAT</title> - - <para>The file consists of sections and parameters. A section - begins with the name of the section in square brackets and continues - until the next section begins. Sections contain parameters of the - form</para> - - <para><replaceable>name</replaceable> = <replaceable>value - </replaceable></para> - - <para>The file is line-based - that is, each newline-terminated - line represents either a comment, a section name or a parameter.</para> - - <para>Section and parameter names are not case sensitive.</para> - - <para>Only the first equals sign in a parameter is significant. - Whitespace before or after the first equals sign is discarded. - Leading, trailing and internal whitespace in section and parameter - names is irrelevant. Leading and trailing whitespace in a parameter - value is discarded. Internal whitespace within a parameter value - is retained verbatim.</para> - - <para>Any line beginning with a semicolon (<quote>;</quote>) or a hash (<quote>#</quote>) - character is ignored, as are lines containing only whitespace.</para> - - <para>Any line ending in a <quote>\</quote> is continued - on the next line in the customary UNIX fashion.</para> - - <para>The values following the equals sign in parameters are all - either a string (no quotes needed) or a boolean, which may be given - as yes/no, 0/1 or true/false. Case is not significant in boolean - values, but is preserved in string values. Some items such as - create modes are numeric.</para> -</refsect1> - -<refsect1> - <title>SECTION DESCRIPTIONS</title> - - <para>Each section in the configuration file (except for the - [global] section) describes a shared resource (known - as a <quote>share</quote>). The section name is the name of the - shared resource and the parameters within the section define - the shares attributes.</para> - - <para>There are three special sections, [global], - [homes] and [printers], which are - described under <emphasis>special sections</emphasis>. The - following notes apply to ordinary section descriptions.</para> - - <para>A share consists of a directory to which access is being - given plus a description of the access rights which are granted - to the user of the service. Some housekeeping options are - also specifiable.</para> - - <para>Sections are either file share services (used by the - client as an extension of their native file systems) or - printable services (used by the client to access print services - on the host running the server).</para> - - <para>Sections may be designated <emphasis>guest</emphasis> services, - in which case no password is required to access them. A specified - UNIX <emphasis>guest account</emphasis> is used to define access - privileges in this case.</para> - - <para>Sections other than guest services will require a password - to access them. The client provides the username. As older clients - only provide passwords and not usernames, you may specify a list - of usernames to check against the password using the <quote>user =</quote> - option in the share definition. For modern clients such as - Windows 95/98/ME/NT/2000, this should not be necessary.</para> - - <para>The access rights granted by the server are - masked by the access rights granted to the specified or guest - UNIX user by the host system. The server does not grant more - access than the host system grants.</para> - - <para>The following sample section defines a file space share. - The user has write access to the path <filename moreinfo="none">/home/bar</filename>. - The share is accessed via the share name <quote>foo</quote>:</para> - -<smbconfexample> - <smbconfsection name="[foo]"/> - <smbconfoption name="path">/home/bar</smbconfoption> - <smbconfoption name="read only">read only = no</smbconfoption> -</smbconfexample> - - <para>The following sample section defines a printable share. - The share is read-only, but printable. That is, the only write - access permitted is via calls to open, write to and close a - spool file. The <emphasis>guest ok</emphasis> parameter means - access will be permitted as the default guest user (specified - elsewhere):</para> - -<smbconfexample> - <smbconfsection name="[aprinter]"/> - <smbconfoption name="path">/usr/spool/public</smbconfoption> - <smbconfoption name="read only">yes</smbconfoption> - <smbconfoption name="printable">yes</smbconfoption> - <smbconfoption name="guest ok">yes</smbconfoption> -</smbconfexample> -</refsect1> - -<refsect1> - <title>SPECIAL SECTIONS</title> +<?xml version="1.0" encoding="UTF-8"?> +<!DOCTYPE variablelist PUBLIC "-//OASIS//DTD DocBook XML V4.2//EN" "http://www.oasis-open.org/docbook/xml/4.2/docbookx.dtd"> +<variablelist xmlns:xi="http://www.w3.org/2003/XInclude"> +<varlistentry> +<indexterm significance="preferred"><primary>abort shutdown script</primary></indexterm><term><anchor id="ABORTSHUTDOWNSCRIPT"/>abort shutdown script (G)</term><listitem> + <para>This a full path name to a script called by <citerefentry><refentrytitle>smbd</refentrytitle> + <manvolnum>8</manvolnum></citerefentry> that + should stop a shutdown procedure issued by the <link linkend="SHUTDOWNSCRIPT"> + <parameter moreinfo="none">shutdown script</parameter></link>.</para> + + <para>If the connected user posseses the <constant>SeRemoteShutdownPrivilege</constant>, + right, this command will be run as user.</para> + +<para>Default: <emphasis><parameter>abort shutdown script</parameter> = +</emphasis> +</para> +<para>Example: <emphasis><parameter>abort shutdown script</parameter> = /sbin/shutdown -c +</emphasis> +</para> +</listitem></varlistentry> +<varlistentry> +<indexterm significance="preferred"><primary>acl compatibility</primary></indexterm><term><anchor id="ACLCOMPATIBILITY"/>acl compatibility (S)</term><listitem> + <para>This parameter specifies what OS ACL semantics should + be compatible with. Possible values are <emphasis>winnt</emphasis> for Windows NT 4, + <emphasis>win2k</emphasis> for Windows 2000 and above and <emphasis>auto</emphasis>. + If you specify <emphasis>auto</emphasis>, the value for this parameter + will be based upon the version of the client. There should + be no reason to change this parameter from the default.</para> + +<para>Default: <emphasis><parameter>acl compatibility</parameter> = Auto +</emphasis> +</para> +<para>Example: <emphasis><parameter>acl compatibility</parameter> = win2k +</emphasis> +</para> +</listitem></varlistentry> +<varlistentry> +<indexterm significance="preferred"><primary>add group script</primary></indexterm><term><anchor id="ADDGROUPSCRIPT"/>add group script (G)</term><listitem> + <para>This is the full pathname to a script that will be run + <emphasis>AS ROOT</emphasis> by <citerefentry> + <refentrytitle>smbd</refentrytitle><manvolnum>8</manvolnum></citerefentry> + when a new group is requested. It will expand any <parameter moreinfo="none">%g</parameter> to the group name passed. This + script is only useful for installations using the Windows NT + domain administration tools. The script is free to create a + group with an arbitrary name to circumvent unix group name + restrictions. In that case the script must print the numeric gid + of the created group on stdout.</para> + +<para><emphasis>No default</emphasis></para> + +</listitem></varlistentry> +<varlistentry> +<indexterm significance="preferred"><primary>add machine script</primary></indexterm><term><anchor id="ADDMACHINESCRIPT"/>add machine script (G)</term><listitem> + <para>This is the full pathname to a script that will be run by + <citerefentry><refentrytitle>smbd</refentrytitle> + <manvolnum>8</manvolnum></citerefentry> when a machine is added + to it's domain using the administrator username and password + method. </para> + + <para>This option is only required when using sam back-ends tied + to the Unix uid method of RID calculation such as smbpasswd. + This option is only available in Samba 3.0.</para> + +<para>Default: <emphasis><parameter>add machine script</parameter> = +</emphasis> +</para> +<para>Example: <emphasis><parameter>add machine script</parameter> = /usr/sbin/adduser -n -g machines -c Machine -d /var/lib/nobody -s /bin/false %u +</emphasis> +</para> +</listitem></varlistentry> +<varlistentry> +<indexterm significance="preferred"><primary>addprinter command</primary></indexterm><term><anchor id="ADDPRINTERCOMMAND"/>addprinter command (G)</term><listitem> + <para>With the introduction of MS-RPC based printing + support for Windows NT/2000 clients in Samba 2.2, The MS Add + Printer Wizard (APW) icon is now also available in the + "Printers..." folder displayed a share listing. The APW + allows for printers to be add remotely to a Samba or Windows + NT/2000 print server.</para> + + <para>For a Samba host this means that the printer must be + physically added to the underlying printing system. The <parameter moreinfo="none">add + printer command</parameter> defines a script to be run which + will perform the necessary operations for adding the printer + to the print system and to add the appropriate service definition + to the <filename moreinfo="none">smb.conf</filename> file in order that it can be + shared by <citerefentry><refentrytitle>smbd</refentrytitle> + <manvolnum>8</manvolnum></citerefentry>.</para> + + <para>The <parameter moreinfo="none">addprinter command</parameter> is + automatically invoked with the following parameter (in + order):</para> + + <itemizedlist> + <listitem><para><parameter moreinfo="none">printer name</parameter></para></listitem> + <listitem><para><parameter moreinfo="none">share name</parameter></para></listitem> + <listitem><para><parameter moreinfo="none">port name</parameter></para></listitem> + <listitem><para><parameter moreinfo="none">driver name</parameter></para></listitem> + <listitem><para><parameter moreinfo="none">location</parameter></para></listitem> + <listitem><para><parameter moreinfo="none">Windows 9x driver location</parameter></para></listitem> + </itemizedlist> + + <para>All parameters are filled in from the PRINTER_INFO_2 structure sent + by the Windows NT/2000 client with one exception. The "Windows 9x + driver location" parameter is included for backwards compatibility + only. The remaining fields in the structure are generated from answers + to the APW questions.</para> + + <para>Once the <parameter moreinfo="none">addprinter command</parameter> has + been executed, <command moreinfo="none">smbd</command> will reparse the <filename moreinfo="none"> + smb.conf</filename> to determine if the share defined by the APW + exists. If the sharename is still invalid, then <command moreinfo="none">smbd + </command> will return an ACCESS_DENIED error to the client.</para> + + <para> + The "add printer command" program can output a single line of text, + which Samba will set as the port the new printer is connected to. + If this line isn't output, Samba won't reload its printer shares. + </para> + + +<para>Default: <emphasis><parameter>addprinter command</parameter> = +</emphasis> +</para> +<para>Example: <emphasis><parameter>addprinter command</parameter> = /usr/bin/addprinter +</emphasis> +</para> +</listitem></varlistentry> +<varlistentry> +<indexterm significance="preferred"><primary>add share command</primary></indexterm><term><anchor id="ADDSHARECOMMAND"/>add share command (G)</term><listitem> + <para>Samba 2.2.0 introduced the ability to dynamically + add and delete shares via the Windows NT 4.0 Server Manager. The + <parameter moreinfo="none">add share command</parameter> is used to define an + external program or script which will add a new service definition + to <filename moreinfo="none">smb.conf</filename>. In order to successfully + execute the <parameter moreinfo="none">add share command</parameter>, <command moreinfo="none">smbd</command> + requires that the administrator be connected using a root account (i.e. + uid == 0). + </para> + + <para> + When executed, <command moreinfo="none">smbd</command> will automatically invoke the + <parameter moreinfo="none">add share command</parameter> with four parameters. + </para> + + <itemizedlist> + <listitem> + <para><parameter moreinfo="none">configFile</parameter> - the location + of the global <filename moreinfo="none">smb.conf</filename> file. + </para> + </listitem> + + <listitem> + <para><parameter moreinfo="none">shareName</parameter> - the name of the new + share. + </para> + </listitem> + + <listitem> + <para><parameter moreinfo="none">pathName</parameter> - path to an **existing** + directory on disk. + </para> + </listitem> + + <listitem> + <para><parameter moreinfo="none">comment</parameter> - comment string to associate + with the new share. + </para> + </listitem> + </itemizedlist> + + <para> + This parameter is only used for add file shares. To add printer shares, + see the <link linkend="ADDPRINTERCOMMAND"><parameter moreinfo="none">addprinter + command</parameter></link>. + </para> + +<para>Default: <emphasis><parameter>add share command</parameter> = +</emphasis> +</para> +<para>Example: <emphasis><parameter>add share command</parameter> = /usr/local/bin/addshare +</emphasis> +</para> +</listitem></varlistentry> +<varlistentry> +<indexterm significance="preferred"><primary>add user script</primary></indexterm><term><anchor id="ADDUSERSCRIPT"/>add user script (G)</term><listitem> + <para>This is the full pathname to a script that will + be run <emphasis>AS ROOT</emphasis> by <citerefentry><refentrytitle>smbd</refentrytitle> + <manvolnum>8</manvolnum></citerefentry> under special circumstances described below.</para> + + <para>Normally, a Samba server requires that UNIX users are + created for all users accessing files on this server. For sites + that use Windows NT account databases as their primary user database + creating these users and keeping the user list in sync with the + Windows NT PDC is an onerous task. This option allows smbd to create the required UNIX users + <emphasis>ON DEMAND</emphasis> when a user accesses the Samba server.</para> + + <para>In order to use this option, <citerefentry><refentrytitle>smbd</refentrytitle> + <manvolnum>8</manvolnum></citerefentry> must <emphasis>NOT</emphasis> be set to <parameter moreinfo="none">security = share</parameter> + and <parameter moreinfo="none">add user script</parameter> + must be set to a full pathname for a script that will create a UNIX + user given one argument of <parameter moreinfo="none">%u</parameter>, which expands into + the UNIX user name to create.</para> + + <para>When the Windows user attempts to access the Samba server, + at login (session setup in the SMB protocol) time, <citerefentry><refentrytitle>smbd</refentrytitle> + <manvolnum>8</manvolnum></citerefentry> contacts the <parameter moreinfo="none">password server</parameter> and + attempts to authenticate the given user with the given password. If the + authentication succeeds then <command moreinfo="none">smbd</command> + attempts to find a UNIX user in the UNIX password database to map the + Windows user into. If this lookup fails, and <parameter moreinfo="none">add user script + </parameter> is set then <command moreinfo="none">smbd</command> will + call the specified script <emphasis>AS ROOT</emphasis>, expanding + any <parameter moreinfo="none">%u</parameter> argument to be the user name to create.</para> + + <para>If this script successfully creates the user then <command moreinfo="none">smbd + </command> will continue on as though the UNIX user + already existed. In this way, UNIX users are dynamically created to + match existing Windows NT accounts.</para> + + <para>See also <link linkend="SECURITY"><parameter moreinfo="none"> + security</parameter></link>, <link linkend="PASSWORDSERVER"> + <parameter moreinfo="none">password server</parameter></link>, + <link linkend="DELETEUSERSCRIPT"><parameter moreinfo="none">delete user + script</parameter></link>.</para> + +<para>Default: <emphasis><parameter>add user script</parameter> = +</emphasis> +</para> +<para>Example: <emphasis><parameter>add user script</parameter> = /usr/local/samba/bin/add_user %u +</emphasis> +</para> +</listitem></varlistentry> +<varlistentry> +<indexterm significance="preferred"><primary>add user to group script</primary></indexterm><term><anchor id="ADDUSERTOGROUPSCRIPT"/>add user to group script (G)</term><listitem> + <para>Full path to the script that will be called when + a user is added to a group using the Windows NT domain administration + tools. It will be run by <citerefentry><refentrytitle>smbd</refentrytitle> + <manvolnum>8</manvolnum></citerefentry> <emphasis>AS ROOT</emphasis>. + Any <parameter moreinfo="none">%g</parameter> will be replaced with the group name and + any <parameter moreinfo="none">%u</parameter> will be replaced with the user name. + </para> + + <para>Note that the <command>adduser</command> command used in the example below does + not support the used syntax on all systems. </para> + + +<para>Default: <emphasis><parameter>add user to group script</parameter> = +</emphasis> +</para> +<para>Example: <emphasis><parameter>add user to group script</parameter> = /usr/sbin/adduser %u %g +</emphasis> +</para> +</listitem></varlistentry> +<varlistentry> +<indexterm significance="preferred"><primary>admin users</primary></indexterm><term><anchor id="ADMINUSERS"/>admin users (S)</term><listitem> + <para>This is a list of users who will be granted + administrative privileges on the share. This means that they + will do all file operations as the super-user (root).</para> + + <para>You should use this option very carefully, as any user in + this list will be able to do anything they like on the share, + irrespective of file permissions.</para> + + <para>This parameter will not work with the <link linkend="SECURITY"> + <parameter moreinfo="none">security = share</parameter></link> in + Samba 3.0. This is by design.</para> + + +<para>Default: <emphasis><parameter>admin users</parameter> = +</emphasis> +</para> +<para>Example: <emphasis><parameter>admin users</parameter> = jason +</emphasis> +</para> +</listitem></varlistentry> +<varlistentry> +<indexterm significance="preferred"><primary>afs share</primary></indexterm><term><anchor id="AFSSHARE"/>afs share (S)</term><listitem> + <para>This parameter controls whether special AFS features are enabled + for this share. If enabled, it assumes that the directory exported via + the <parameter>path</parameter> parameter is a local AFS import. The + special AFS features include the attempt to hand-craft an AFS token + if you enabled --with-fake-kaserver in configure. +</para> + +<para>Default: <emphasis><parameter>afs share</parameter> = no +</emphasis> +</para> + +</listitem></varlistentry> +<varlistentry> +<indexterm significance="preferred"><primary>afs username map</primary></indexterm><term><anchor id="AFSUSERNAMEMAP"/>afs username map (G)</term><listitem> + <para>If you are using the fake kaserver AFS feature, you might + want to hand-craft the usernames you are creating tokens for. + For example this is necessary if you have users from several domain + in your AFS Protection Database. One possible scheme to code users + as DOMAIN+User as it is done by winbind with the + as a separator. + </para> + + <para>The mapped user name must contain the cell name to log into, + so without setting this parameter there will be no token.</para> + +<para>Default: <emphasis><parameter>afs username map</parameter> = +</emphasis> +</para> +<para>Example: <emphasis><parameter>afs username map</parameter> = %u@afs.samba.org +</emphasis> +</para> +</listitem></varlistentry> +<varlistentry> +<indexterm significance="preferred"><primary>algorithmic rid base</primary></indexterm><term><anchor id="ALGORITHMICRIDBASE"/>algorithmic rid base (G)</term><listitem> + <para>This determines how Samba will use its + algorithmic mapping from uids/gid to the RIDs needed to construct + NT Security Identifiers. + </para> + + <para>Setting this option to a larger value could be useful to sites + transitioning from WinNT and Win2k, as existing user and + group rids would otherwise clash with sytem users etc. + </para> + + <para>All UIDs and GIDs must be able to be resolved into SIDs for + the correct operation of ACLs on the server. As such the algorithmic + mapping can't be 'turned off', but pushing it 'out of the way' should + resolve the issues. Users and groups can then be assigned 'low' RIDs + in arbitary-rid supporting backends. + </para> + +<para>Default: <emphasis><parameter>algorithmic rid base</parameter> = 1000 +</emphasis> +</para> +<para>Example: <emphasis><parameter>algorithmic rid base</parameter> = 100000 +</emphasis> +</para> +</listitem></varlistentry> +<varlistentry> +<indexterm significance="preferred"><primary>allocation roundup size</primary></indexterm><term><anchor id="ALLOCATIONROUNDUPSIZE"/>allocation roundup size (S)</term><listitem> + <para>This parameter allows an administrator to tune the + allocation size reported to Windows clients. The default + size of 1Mb generally results in improved Windows client + performance. However, rounding the allocation size may cause + difficulties for some applications, e.g. MS Visual Studio. + If the MS Visual Studio compiler starts to crash with an + internal error, set this parameter to zero for this share. + </para> + + <para>The integer parameter specifies the roundup size in bytes.</para> + +<para>Default: <emphasis><parameter>allocation roundup size</parameter> = 1048576 +</emphasis> +</para> +<para>Example: <emphasis><parameter>allocation roundup size</parameter> = 0 +# (to disable roundups) +</emphasis> +</para> +</listitem></varlistentry> +<varlistentry> +<indexterm significance="preferred"><primary>allow trusted domains</primary></indexterm><term><anchor id="ALLOWTRUSTEDDOMAINS"/>allow trusted domains (G)</term><listitem> + <para>This option only takes effect when the <link linkend="SECURITY"> + <parameter moreinfo="none">security</parameter></link> option is set to + <constant>server</constant> or <constant>domain</constant>. + If it is set to no, then attempts to connect to a resource from + a domain or workgroup other than the one which smbd is running + in will fail, even if that domain is trusted by the remote server + doing the authentication.</para> + + <para>This is useful if you only want your Samba server to + serve resources to users in the domain it is a member of. As + an example, suppose that there are two domains DOMA and DOMB. DOMB + is trusted by DOMA, which contains the Samba server. Under normal + circumstances, a user with an account in DOMB can then access the + resources of a UNIX account with the same account name on the + Samba server even if they do not have an account in DOMA. This + can make implementing a security boundary difficult.</para> + +<para>Default: <emphasis><parameter>allow trusted domains</parameter> = yes +</emphasis> +</para> + +</listitem></varlistentry> +<varlistentry> +<indexterm significance="preferred"><primary>announce as</primary></indexterm><term><anchor id="ANNOUNCEAS"/>announce as (G)</term><listitem> + <para>This specifies what type of server <citerefentry><refentrytitle>nmbd</refentrytitle> + <manvolnum>8</manvolnum></citerefentry> will announce itself as, to a network neighborhood browse + list. By default this is set to Windows NT. The valid options + are : "NT Server" (which can also be written as "NT"), + "NT Workstation", "Win95" or "WfW" meaning Windows NT Server, + Windows NT Workstation, Windows 95 and Windows for Workgroups + respectively. Do not change this parameter unless you have a + specific need to stop Samba appearing as an NT server as this + may prevent Samba servers from participating as browser servers + correctly.</para> + +<para>Default: <emphasis><parameter>announce as</parameter> = NT Server +</emphasis> +</para> +<para>Example: <emphasis><parameter>announce as</parameter> = Win95 +</emphasis> +</para> +</listitem></varlistentry> +<varlistentry> +<indexterm significance="preferred"><primary>announce version</primary></indexterm><term><anchor id="ANNOUNCEVERSION"/>announce version (G)</term><listitem> + <para>This specifies the major and minor version numbers + that nmbd will use when announcing itself as a server. The default + is 4.9. Do not change this parameter unless you have a specific + need to set a Samba server to be a downlevel server.</para> + +<para>Default: <emphasis><parameter>announce version</parameter> = 4.9 +</emphasis> +</para> +<para>Example: <emphasis><parameter>announce version</parameter> = 2.0 +</emphasis> +</para> +</listitem></varlistentry> +<varlistentry> +<indexterm significance="preferred"><primary>auth methods</primary></indexterm><term><anchor id="AUTHMETHODS"/>auth methods (G)</term><listitem> + <para>This option allows the administrator to chose what + authentication methods <command moreinfo="none">smbd</command> will use when authenticating + a user. This option defaults to sensible values based on <link linkend="SECURITY"> + <parameter moreinfo="none">security</parameter></link>. This should be considered + a developer option and used only in rare circumstances. In the majority (if not all) + of production servers, the default setting should be adequate.</para> + + <para>Each entry in the list attempts to authenticate the user in turn, until + the user authenticates. In practice only one method will ever actually + be able to complete the authentication. + </para> + + <para>Possible options include <constant>guest</constant> (anonymous access), + <constant>sam</constant> (lookups in local list of accounts based on netbios + name or domain name), <constant>winbind</constant> (relay authentication requests + for remote users through winbindd), <constant>ntdomain</constant> (pre-winbindd + method of authentication for remote domain users; deprecated in favour of winbind method), + <constant>trustdomain</constant> (authenticate trusted users by contacting the + remote DC directly from smbd; deprecated in favour of winbind method).</para> + +<para>Default: <emphasis><parameter>auth methods</parameter> = +</emphasis> +</para> +<para>Example: <emphasis><parameter>auth methods</parameter> = guest sam winbind +</emphasis> +</para> +</listitem></varlistentry> +<varlistentry> +<indexterm significance="preferred"><primary>available</primary></indexterm><term><anchor id="AVAILABLE"/>available (S)</term><listitem> + <para>This parameter lets you "turn off" a service. If + <parameter moreinfo="none">available = no</parameter>, then <emphasis>ALL</emphasis> + attempts to connect to the service will fail. Such failures are + logged.</para> + + +<para>Default: <emphasis><parameter>available</parameter> = yes +</emphasis> +</para> + +</listitem></varlistentry> +<varlistentry> +<indexterm significance="preferred"><primary>bind interfaces only</primary></indexterm><term><anchor id="BINDINTERFACESONLY"/>bind interfaces only (G)</term><listitem> + <para>This global parameter allows the Samba admin + to limit what interfaces on a machine will serve SMB requests. It + affects file service <citerefentry><refentrytitle>smbd</refentrytitle> + <manvolnum>8</manvolnum></citerefentry> and name service <citerefentry><refentrytitle>nmbd</refentrytitle> + <manvolnum>8</manvolnum></citerefentry> in a slightly different ways.</para> + + <para>For name service it causes <command moreinfo="none">nmbd</command> to bind + to ports 137 and 138 on the interfaces listed in + the <link linkend="INTERFACES">interfaces</link> parameter. <command moreinfo="none">nmbd</command> also + binds to the "all addresses" interface (0.0.0.0) + on ports 137 and 138 for the purposes of reading broadcast messages. + If this option is not set then <command moreinfo="none">nmbd</command> will service + name requests on all of these sockets. If <parameter moreinfo="none">bind interfaces + only</parameter> is set then <command moreinfo="none">nmbd</command> will check the + source address of any packets coming in on the broadcast sockets + and discard any that don't match the broadcast addresses of the + interfaces in the <parameter moreinfo="none">interfaces</parameter> parameter list. + As unicast packets are received on the other sockets it allows + <command moreinfo="none">nmbd</command> to refuse to serve names to machines that + send packets that arrive through any interfaces not listed in the + <parameter moreinfo="none">interfaces</parameter> list. IP Source address spoofing + does defeat this simple check, however, so it must not be used + seriously as a security feature for <command moreinfo="none">nmbd</command>.</para> + + <para>For file service it causes <citerefentry><refentrytitle>smbd</refentrytitle> + <manvolnum>8</manvolnum></citerefentry> to bind only to the interface list + given in the <link linkend="INTERFACES">interfaces</link> parameter. This + restricts the networks that <command moreinfo="none">smbd</command> will serve + to packets coming in those interfaces. Note that you should not use this parameter + for machines that are serving PPP or other intermittent or non-broadcast network + interfaces as it will not cope with non-permanent interfaces.</para> + + <para>If <parameter moreinfo="none">bind interfaces only</parameter> is set then + unless the network address <emphasis>127.0.0.1</emphasis> is added + to the <parameter moreinfo="none">interfaces</parameter> parameter + list <citerefentry><refentrytitle>smbpasswd</refentrytitle> + <manvolnum>8</manvolnum></citerefentry> and <citerefentry><refentrytitle>swat</refentrytitle> + <manvolnum>8</manvolnum></citerefentry> may not work as expected due + to the reasons covered below.</para> + + <para>To change a users SMB password, the <command moreinfo="none">smbpasswd</command> + by default connects to the <emphasis>localhost - 127.0.0.1</emphasis> + address as an SMB client to issue the password change request. If + <parameter moreinfo="none">bind interfaces only</parameter> is set then unless the + network address <emphasis>127.0.0.1</emphasis> is added to the + <parameter moreinfo="none">interfaces</parameter> parameter list then <command moreinfo="none"> + smbpasswd</command> will fail to connect in it's default mode. + <command moreinfo="none">smbpasswd</command> can be forced to use the primary IP interface + of the local host by using its <citerefentry><refentrytitle>smbpasswd</refentrytitle> + <manvolnum>8</manvolnum></citerefentry> <parameter moreinfo="none">-r <replaceable>remote machine</replaceable></parameter> + parameter, with <replaceable>remote machine</replaceable> set + to the IP name of the primary interface of the local host.</para> + + <para>The <command moreinfo="none">swat</command> status page tries to connect with + <command moreinfo="none">smbd</command> and <command moreinfo="none">nmbd</command> at the address + <emphasis>127.0.0.1</emphasis> to determine if they are running. + Not adding <emphasis>127.0.0.1</emphasis> will cause <command moreinfo="none"> + smbd</command> and <command moreinfo="none">nmbd</command> to always show + "not running" even if they really are. This can prevent <command moreinfo="none"> + swat</command> from starting/stopping/restarting <command moreinfo="none">smbd</command> + and <command moreinfo="none">nmbd</command>.</para> + + +<para>Default: <emphasis><parameter>bind interfaces only</parameter> = no +</emphasis> +</para> + +</listitem></varlistentry> +<varlistentry> +<indexterm significance="preferred"><primary>blocking locks</primary></indexterm><term><anchor id="BLOCKINGLOCKS"/>blocking locks (S)</term><listitem> + <para>This parameter controls the behavior + of <citerefentry><refentrytitle>smbd</refentrytitle> + <manvolnum>8</manvolnum></citerefentry> when given a request by a client + to obtain a byte range lock on a region of an open file, and the + request has a time limit associated with it.</para> + + <para>If this parameter is set and the lock range requested + cannot be immediately satisfied, samba will internally + queue the lock request, and periodically attempt to obtain + the lock until the timeout period expires.</para> + + <para>If this parameter is set to <constant>no</constant>, then + samba will behave as previous versions of Samba would and + will fail the lock request immediately if the lock range + cannot be obtained.</para> + + +<para>Default: <emphasis><parameter>blocking locks</parameter> = yes +</emphasis> +</para> + +</listitem></varlistentry> +<varlistentry> +<indexterm significance="preferred"><primary>block size</primary></indexterm><term><anchor id="BLOCKSIZE"/>block size (S)</term><listitem> + <para>This parameter controls the behavior of <citerefentry><refentrytitle>smbd</refentrytitle> + <manvolnum>8</manvolnum></citerefentry> when reporting disk free + sizes. By default, this reports a disk block size of 1024 bytes. + </para> + + <para>Changing this parameter may have some effect on the + efficiency of client writes, this is not yet confirmed. This + parameter was added to allow advanced administrators to change + it (usually to a higher value) and test the effect it has on + client write performance without re-compiling the code. As this + is an experimental option it may be removed in a future release. + </para> + + <para>Changing this option does not change the disk free reporting + size, just the block size unit reported to the client. + </para> + +<para><emphasis>No default</emphasis></para> + +</listitem></varlistentry> +<varlistentry> +<indexterm significance="preferred"><primary>browsable</primary><see>browseable</see></indexterm><term><anchor id="BROWSABLE"/>browsable</term><listitem><para>This parameter is a synonym for browseable.</para></listitem></varlistentry><varlistentry> +<indexterm significance="preferred"><primary>browseable</primary></indexterm><term><anchor id="BROWSEABLE"/>browseable (S)</term><listitem> + <para>This controls whether this share is seen in + the list of available shares in a net view and in the browse list.</para> + + +<para>Default: <emphasis><parameter>browseable</parameter> = yes +</emphasis> +</para> + +</listitem></varlistentry> +<varlistentry> +<indexterm significance="preferred"><primary>browse list</primary></indexterm><term><anchor id="BROWSELIST"/>browse list (G)</term><listitem> + <para>This controls whether <citerefentry><refentrytitle>smbd</refentrytitle> + <manvolnum>8</manvolnum></citerefentry> will serve a browse list to + a client doing a <command moreinfo="none">NetServerEnum</command> call. Normally + set to <constant>yes</constant>. You should never need to change + this.</para> + + +<para>Default: <emphasis><parameter>browse list</parameter> = yes +</emphasis> +</para> + +</listitem></varlistentry> +<varlistentry> +<indexterm significance="preferred"><primary>casesignames</primary><see>case sensitive</see></indexterm><term><anchor id="CASESIGNAMES"/>casesignames</term><listitem><para>This parameter is a synonym for case sensitive.</para></listitem></varlistentry><varlistentry> +<indexterm significance="preferred"><primary>case sensitive</primary></indexterm><term><anchor id="CASESENSITIVE"/>case sensitive (S)</term><listitem> + <para>See the discussion in the section <link linkend="NAMEMANGLINGSECT">NAME MANGLING</link>.</para> + +<para>Default: <emphasis><parameter>case sensitive</parameter> = no +</emphasis> +</para> + +</listitem></varlistentry> +<varlistentry> +<indexterm significance="preferred"><primary>change notify timeout</primary></indexterm><term><anchor id="CHANGENOTIFYTIMEOUT"/>change notify timeout (G)</term><listitem> + <para>This SMB allows a client to tell a server to + "watch" a particular directory for any changes and only reply to + the SMB request when a change has occurred. Such constant scanning of + a directory is expensive under UNIX, hence an <citerefentry><refentrytitle>smbd</refentrytitle> + <manvolnum>8</manvolnum></citerefentry> daemon only performs such a scan + on each requested directory once every <parameter moreinfo="none">change notify + timeout</parameter> seconds.</para> + +<para>Default: <emphasis><parameter>change notify timeout</parameter> = 60 +</emphasis> +</para> +<para>Example: <emphasis><parameter>change notify timeout</parameter> = 300 +# Would change the scan time to every 5 minutes. +</emphasis> +</para> +</listitem></varlistentry> +<varlistentry> +<indexterm significance="preferred"><primary>change share command</primary></indexterm><term><anchor id="CHANGESHARECOMMAND"/>change share command (G)</term><listitem> + <para>Samba 2.2.0 introduced the ability to dynamically + add and delete shares via the Windows NT 4.0 Server Manager. The + <parameter moreinfo="none">change share command</parameter> is used to define an + external program or script which will modify an existing service definition + in <filename moreinfo="none">smb.conf</filename>. In order to successfully + execute the <parameter moreinfo="none">change share command</parameter>, <command moreinfo="none">smbd</command> + requires that the administrator be connected using a root account (i.e. + uid == 0). + </para> + + <para> + When executed, <command moreinfo="none">smbd</command> will automatically invoke the + <parameter moreinfo="none">change share command</parameter> with four parameters. + </para> + + <itemizedlist> + <listitem> + <para><parameter moreinfo="none">configFile</parameter> - the location + of the global <filename moreinfo="none">smb.conf</filename> file. + </para> + </listitem> + + <listitem> + <para><parameter moreinfo="none">shareName</parameter> - the name of the new + share. + </para> + </listitem> + + <listitem> + <para><parameter moreinfo="none">pathName</parameter> - path to an **existing** + directory on disk. + </para> + </listitem> + + <listitem> + <para><parameter moreinfo="none">comment</parameter> - comment string to associate + with the new share. + </para> + </listitem> + </itemizedlist> + + <para> + This parameter is only used modify existing file shares definitions. To modify + printer shares, use the "Printers..." folder as seen when browsing the Samba host. + </para> + +<para>Default: <emphasis><parameter>change share command</parameter> = +</emphasis> +</para> +<para>Example: <emphasis><parameter>change share command</parameter> = /usr/local/bin/addshare +</emphasis> +</para> +</listitem></varlistentry> +<varlistentry> +<indexterm significance="preferred"><primary>check password script</primary></indexterm><term><anchor id="CHECKPASSWORDSCRIPT"/>check password script (G)</term><listitem> + <para>The name of a program that can be used to check password + complexity. The password is sent to the program's standrad input.</para> + + <para>The program must return 0 on good password any other value otherwise. + In case the password is considered weak (the program do not return 0) the + user will be notified and the password change will fail.</para> + + <para>Note: In the example directory there is a sample program called crackcheck + that uses cracklib to checkpassword quality</para>. + + +<para>Default: <emphasis><parameter>check password script</parameter> = Disabled +</emphasis> +</para> +<para>Example: <emphasis><parameter>check password script</parameter> = check password script = /usr/local/sbin/crackcheck +</emphasis> +</para> +</listitem></varlistentry> +<varlistentry> +<indexterm significance="preferred"><primary>client lanman auth</primary></indexterm><term><anchor id="CLIENTLANMANAUTH"/>client lanman auth (G)</term><listitem> + <para>This parameter determines whether or not <citerefentry><refentrytitle>smbclient</refentrytitle> + <manvolnum>8</manvolnum></citerefentry> and other samba client + tools will attempt to authenticate itself to servers using the + weaker LANMAN password hash. If disabled, only server which support NT + password hashes (e.g. Windows NT/2000, Samba, etc... but not + Windows 95/98) will be able to be connected from the Samba client.</para> + + <para>The LANMAN encrypted response is easily broken, due to it's + case-insensitive nature, and the choice of algorithm. Clients + without Windows 95/98 servers are advised to disable + this option. </para> + + <para>Disabling this option will also disable the <command moreinfo="none">client plaintext auth</command> option</para> + + <para>Likewise, if the <command moreinfo="none">client ntlmv2 + auth</command> parameter is enabled, then only NTLMv2 logins will be + attempted.</para> + +<para>Default: <emphasis><parameter>client lanman auth</parameter> = yes +</emphasis> +</para> + +</listitem></varlistentry> +<varlistentry> +<indexterm significance="preferred"><primary>client ntlmv2 auth</primary></indexterm><term><anchor id="CLIENTNTLMV2AUTH"/>client ntlmv2 auth (G)</term><listitem> + <para>This parameter determines whether or not <citerefentry><refentrytitle>smbclient</refentrytitle> + <manvolnum>8</manvolnum></citerefentry> will attempt to + authenticate itself to servers using the NTLMv2 encrypted password + response.</para> + + <para>If enabled, only an NTLMv2 and LMv2 response (both much more + secure than earlier versions) will be sent. Many servers + (including NT4 < SP4, Win9x and Samba 2.2) are not compatible with + NTLMv2. </para> + + <para>Similarly, if enabled, NTLMv1, <command moreinfo="none">client lanman auth</command> and <command moreinfo="none">client plaintext auth</command> + authentication will be disabled. This also disables share-level + authentication. </para> + + <para>If disabled, an NTLM response (and possibly a LANMAN response) + will be sent by the client, depending on the value of <command moreinfo="none">client lanman auth</command>. </para> + + <para>Note that some sites (particularly + those following 'best practice' security polices) only allow NTLMv2 + responses, and not the weaker LM or NTLM.</para> + +<para>Default: <emphasis><parameter>client ntlmv2 auth</parameter> = no +</emphasis> +</para> + +</listitem></varlistentry> +<varlistentry> +<indexterm significance="preferred"><primary>client plaintext auth</primary></indexterm><term><anchor id="CLIENTPLAINTEXTAUTH"/>client plaintext auth (G)</term><listitem> + <para>Specifies whether a client should send a plaintext + password if the server does not support encrypted passwords.</para> + +<para>Default: <emphasis><parameter>client plaintext auth</parameter> = yes +</emphasis> +</para> + +</listitem></varlistentry> +<varlistentry> +<indexterm significance="preferred"><primary>client schannel</primary></indexterm><term><anchor id="CLIENTSCHANNEL"/>client schannel (G)</term><listitem> + + <para>This controls whether the client offers or even + demands the use of the netlogon schannel. + <parameter>client schannel = no</parameter> does not + offer the schannel, <parameter>client schannel = + auto</parameter> offers the schannel but does not + enforce it, and <parameter>client schannel = + yes</parameter> denies access if the server is not + able to speak netlogon schannel. </para> + +<para>Default: <emphasis><parameter>client schannel</parameter> = auto +</emphasis> +</para> +<para>Example: <emphasis><parameter>client schannel</parameter> = yes +</emphasis> +</para> +</listitem></varlistentry> +<varlistentry> +<indexterm significance="preferred"><primary>client signing</primary></indexterm><term><anchor id="CLIENTSIGNING"/>client signing (G)</term><listitem> + <para>This controls whether the client offers or requires + the server it talks to to use SMB signing. Possible values + are <emphasis>auto</emphasis>, <emphasis>mandatory</emphasis> + and <emphasis>disabled</emphasis>. + </para> + + <para>When set to auto, SMB signing is offered, but not enforced. + When set to mandatory, SMB signing is required and if set + to disabled, SMB signing is not offered either.</para> + +<para>Default: <emphasis><parameter>client signing</parameter> = auto +</emphasis> +</para> + +</listitem></varlistentry> +<varlistentry> +<indexterm significance="preferred"><primary>client use spnego</primary></indexterm><term><anchor id="CLIENTUSESPNEGO"/>client use spnego (G)</term><listitem> + <para> This variable controls whether Samba clients will try + to use Simple and Protected NEGOciation (as specified by rfc2478) with + supporting servers (including WindowsXP, Windows2000 and Samba + 3.0) to agree upon an authentication + mechanism. This enables Kerberos authentication in particular.</para> + +<para>Default: <emphasis><parameter>client use spnego</parameter> = yes +</emphasis> +</para> + +</listitem></varlistentry> +<varlistentry> +<indexterm significance="preferred"><primary>comment</primary></indexterm><term><anchor id="COMMENT"/>comment (S)</term><listitem> + <para>This is a text field that is seen next to a share + when a client does a queries the server, either via the network + neighborhood or via <command moreinfo="none">net view</command> to list what shares + are available.</para> + + <para>If you want to set the string that is displayed next to the + machine name then see the <link linkend="SERVERSTRING"><parameter moreinfo="none"> + server string</parameter></link> parameter.</para> + + +<para>Default: <emphasis><parameter>comment</parameter> = +# No comment +</emphasis> +</para> +<para>Example: <emphasis><parameter>comment</parameter> = Fred's Files +</emphasis> +</para> +</listitem></varlistentry> +<varlistentry> +<indexterm significance="preferred"><primary>config file</primary></indexterm><term><anchor id="CONFIGFILE"/>config file (G)</term><listitem> + <para>This allows you to override the config file + to use, instead of the default (usually <filename moreinfo="none">smb.conf</filename>). + There is a chicken and egg problem here as this option is set + in the config file!</para> + + <para>For this reason, if the name of the config file has changed + when the parameters are loaded then it will reload them from + the new config file.</para> + + <para>This option takes the usual substitutions, which can + be very useful.</para> + + <para>If the config file doesn't exist then it won't be loaded + (allowing you to special case the config files of just a few + clients).</para> + +<para><emphasis>No default</emphasis></para> +<para>Example: <emphasis><parameter>config file</parameter> = /usr/local/samba/lib/smb.conf.%m +</emphasis> +</para> +</listitem></varlistentry> +<varlistentry> +<indexterm significance="preferred"><primary>copy</primary></indexterm><term><anchor id="COPY"/>copy (S)</term><listitem> + <para>This parameter allows you to "clone" service + entries. The specified service is simply duplicated under the + current service's name. Any parameters specified in the current + section will override those in the section being copied.</para> + + <para>This feature lets you set up a 'template' service and + create similar services easily. Note that the service being + copied must occur earlier in the configuration file than the + service doing the copying.</para> + +<para>Default: <emphasis><parameter>copy</parameter> = +</emphasis> +</para> +<para>Example: <emphasis><parameter>copy</parameter> = otherservice +</emphasis> +</para> +</listitem></varlistentry> +<varlistentry> +<indexterm significance="preferred"><primary>create mode</primary><see>create mask</see></indexterm><term><anchor id="CREATEMODE"/>create mode</term><listitem><para>This parameter is a synonym for create mask.</para></listitem></varlistentry><varlistentry> +<indexterm significance="preferred"><primary>create mask</primary></indexterm><term><anchor id="CREATEMASK"/>create mask (S)</term><listitem> + <para>When a file is created, the necessary permissions are + calculated according to the mapping from DOS modes to UNIX + permissions, and the resulting UNIX mode is then bit-wise 'AND'ed + with this parameter. This parameter may be thought of as a bit-wise + MASK for the UNIX modes of a file. Any bit <emphasis>not</emphasis> + set here will be removed from the modes set on a file when it is + created.</para> + + <para>The default value of this parameter removes the + 'group' and 'other' write and execute bits from the UNIX modes.</para> + + <para>Following this Samba will bit-wise 'OR' the UNIX mode created + from this parameter with the value of the <link linkend="FORCECREATEMODE"> + <parameter moreinfo="none">force create mode</parameter></link> + parameter which is set to 000 by default.</para> + + <para>This parameter does not affect directory modes. See the + parameter <link linkend="DIRECTORYMODE"><parameter moreinfo="none">directory mode + </parameter></link> for details.</para> + + <para>Note that this parameter does not apply to permissions + set by Windows NT/2000 ACL editors. If the administrator wishes to enforce + a mask on access control lists also, they need to set the <link linkend="SECURITYMASK"> + <parameter moreinfo="none">security mask</parameter></link>.</para> + +<para>Default: <emphasis><parameter>create mask</parameter> = 0744 +</emphasis> +</para> +<para>Example: <emphasis><parameter>create mask</parameter> = 0775 +</emphasis> +</para> +</listitem></varlistentry> +<varlistentry> +<indexterm significance="preferred"><primary>csc policy</primary></indexterm><term><anchor id="CSCPOLICY"/>csc policy (S)</term><listitem> + <para>This stands for <emphasis>client-side caching + policy</emphasis>, and specifies how clients capable of offline + caching will cache the files in the share. The valid values + are: manual, documents, programs, disable.</para> + + <para>These values correspond to those used on Windows servers.</para> + + <para>For example, shares containing roaming profiles can have + offline caching disabled using <command moreinfo="none">csc policy = disable</command>.</para> + +<para>Default: <emphasis><parameter>csc policy</parameter> = manual +</emphasis> +</para> +<para>Example: <emphasis><parameter>csc policy</parameter> = programs +</emphasis> +</para> +</listitem></varlistentry> +<varlistentry> +<indexterm significance="preferred"><primary>cups options</primary></indexterm><term><anchor id="CUPSOPTIONS"/>cups options (S)</term><listitem> + <para>This parameter is only applicable if <link linkend="PRINTING"><parameter moreinfo="none">printing</parameter></link> is + set to <constant>cups</constant>. Its value is a free form string of options + passed directly to the cups library. + </para> + + <para>You can pass any generic print option known to CUPS (as listed + in the CUPS "Software Users' Manual"). You can also pass any printer + specific option (as listed in "lpoptions -d printername -l") + valid for the target queue.</para> + + <para>You should set this parameter to <constant>raw</constant> if your CUPS server + <filename>error_log</filename> file contains messages such as + "Unsupported format 'application/octet-stream'" when printing from a Windows client + through Samba. It is no longer necessary to enable + system wide raw printing in <filename>/etc/cups/mime.{convs,types}</filename>. + </para> + + +<para>Default: <emphasis><parameter>cups options</parameter> = "" +</emphasis> +</para> +<para>Example: <emphasis><parameter>cups options</parameter> = "raw,media=a4,job-sheets=secret,secret" +</emphasis> +</para> +</listitem></varlistentry> +<varlistentry> +<indexterm significance="preferred"><primary>cups server</primary></indexterm><term><anchor id="CUPSSERVER"/>cups server (G)</term><listitem> + <para>This parameter is only applicable if <link linkend="PRINTING"><parameter moreinfo="none">printing</parameter></link> is + set to <constant>cups</constant>. + </para> + + <para>If set, this option overrides the ServerName option in the CUPS + <filename>client.conf</filename>. This is necessary if you have virtual + samba servers that connect to different CUPS daemons.</para> + +<para>Default: <emphasis><parameter>cups server</parameter> = "" +</emphasis> +</para> +<para>Example: <emphasis><parameter>cups server</parameter> = MYCUPSSERVER +</emphasis> +</para> +</listitem></varlistentry> +<varlistentry> +<indexterm significance="preferred"><primary>deadtime</primary></indexterm><term><anchor id="DEADTIME"/>deadtime (G)</term><listitem> + <para>The value of the parameter (a decimal integer) + represents the number of minutes of inactivity before a connection + is considered dead, and it is disconnected. The deadtime only takes + effect if the number of open files is zero.</para> + + <para>This is useful to stop a server's resources being + exhausted by a large number of inactive connections.</para> + + <para>Most clients have an auto-reconnect feature when a + connection is broken so in most cases this parameter should be + transparent to users.</para> + + <para>Using this parameter with a timeout of a few minutes + is recommended for most systems.</para> + + <para>A deadtime of zero indicates that no auto-disconnection + should be performed.</para> + +<para>Default: <emphasis><parameter>deadtime</parameter> = 0 +</emphasis> +</para> +<para>Example: <emphasis><parameter>deadtime</parameter> = 15 +</emphasis> +</para> +</listitem></varlistentry> +<varlistentry> +<indexterm significance="preferred"><primary>debug hires timestamp</primary></indexterm><term><anchor id="DEBUGHIRESTIMESTAMP"/>debug hires timestamp (G)</term><listitem> + <para>Sometimes the timestamps in the log messages + are needed with a resolution of higher that seconds, this + boolean parameter adds microsecond resolution to the timestamp + message header when turned on.</para> + + <para>Note that the parameter <link linkend="DEBUGTIMESTAMP"><parameter moreinfo="none"> + debug timestamp</parameter></link> must be on for this to have an + effect.</para> + + +<para>Default: <emphasis><parameter>debug hires timestamp</parameter> = no +</emphasis> +</para> + +</listitem></varlistentry> +<varlistentry> +<indexterm significance="preferred"><primary>debug pid</primary></indexterm><term><anchor id="DEBUGPID"/>debug pid (G)</term><listitem> + <para>When using only one log file for more then one forked + <citerefentry><refentrytitle>smbd</refentrytitle> + <manvolnum>8</manvolnum></citerefentry>-process there may be hard to + follow which process outputs which message. This boolean parameter + is adds the process-id to the timestamp message headers in the + logfile when turned on.</para> + + <para>Note that the parameter <link linkend="DEBUGTIMESTAMP"><parameter moreinfo="none"> + debug timestamp</parameter></link> must be on for this to have an + effect.</para> + +<para>Default: <emphasis><parameter>debug pid</parameter> = no +</emphasis> +</para> + +</listitem></varlistentry> +<varlistentry> +<indexterm significance="preferred"><primary>timestamp logs</primary><see>debug timestamp</see></indexterm><term><anchor id="TIMESTAMPLOGS"/>timestamp logs</term><listitem><para>This parameter is a synonym for debug timestamp.</para></listitem></varlistentry><varlistentry> +<indexterm significance="preferred"><primary>debug timestamp</primary></indexterm><term><anchor id="DEBUGTIMESTAMP"/>debug timestamp (G)</term><listitem> + <para>Samba debug log messages are timestamped + by default. If you are running at a high <link linkend="DEBUGLEVEL"> + <parameter moreinfo="none">debug level</parameter></link> these timestamps + can be distracting. This boolean parameter allows timestamping + to be turned off.</para> + +<para>Default: <emphasis><parameter>debug timestamp</parameter> = yes +</emphasis> +</para> + +</listitem></varlistentry> +<varlistentry> +<indexterm significance="preferred"><primary>debug uid</primary></indexterm><term><anchor id="DEBUGUID"/>debug uid (G)</term><listitem> + <para>Samba is sometimes run as root and sometime + run as the connected user, this boolean parameter inserts the + current euid, egid, uid and gid to the timestamp message headers + in the log file if turned on.</para> + + <para>Note that the parameter <link linkend="DEBUGTIMESTAMP"><parameter moreinfo="none"> + debug timestamp</parameter></link> must be on for this to have an + effect.</para> + +<para>Default: <emphasis><parameter>debug uid</parameter> = no +</emphasis> +</para> + +</listitem></varlistentry> +<varlistentry> +<indexterm significance="preferred"><primary>default case</primary></indexterm><term><anchor id="DEFAULTCASE"/>default case (S)</term><listitem> + <para>See the section on <link linkend="NAMEMANGLINGSECT"> + NAME MANGLING</link>. Also note the <link linkend="SHORTPRESERVECASE"> + <parameter moreinfo="none">short preserve case</parameter></link> parameter.</para> + +<para>Default: <emphasis><parameter>default case</parameter> = lower +</emphasis> +</para> + +</listitem></varlistentry> +<varlistentry> +<indexterm significance="preferred"><primary>default devmode</primary></indexterm><term><anchor id="DEFAULTDEVMODE"/>default devmode (S)</term><listitem> + <para>This parameter is only applicable to <link linkend="PRINTOK">printable</link> services. + When smbd is serving Printer Drivers to Windows NT/2k/XP clients, each printer on the Samba + server has a Device Mode which defines things such as paper size and + orientation and duplex settings. The device mode can only correctly be + generated by the printer driver itself (which can only be executed on a + Win32 platform). Because smbd is unable to execute the driver code + to generate the device mode, the default behavior is to set this field + to NULL. + </para> + + <para>Most problems with serving printer drivers to Windows NT/2k/XP clients + can be traced to a problem with the generated device mode. Certain drivers + will do things such as crashing the client's Explorer.exe with a NULL devmode. + However, other printer drivers can cause the client's spooler service + (spoolsv.exe) to die if the devmode was not created by the driver itself + (i.e. smbd generates a default devmode). + </para> + + <para>This parameter should be used with care and tested with the printer + driver in question. It is better to leave the device mode to NULL + and let the Windows client set the correct values. Because drivers do not + do this all the time, setting <command moreinfo="none">default devmode = yes</command> + will instruct smbd to generate a default one. + </para> + + <para>For more information on Windows NT/2k printing and Device Modes, + see the <ulink url="http://msdn.microsoft.com/">MSDN documentation</ulink>. +</para> + +<para>Default: <emphasis><parameter>default devmode</parameter> = no +</emphasis> +</para> + +</listitem></varlistentry> +<varlistentry> +<indexterm significance="preferred"><primary>default</primary><see>default service</see></indexterm><term><anchor id="DEFAULT"/>default</term><listitem><para>This parameter is a synonym for default service.</para></listitem></varlistentry><varlistentry> +<indexterm significance="preferred"><primary>default service</primary></indexterm><term><anchor id="DEFAULTSERVICE"/>default service (G)</term><listitem> + <para>This parameter specifies the name of a service + which will be connected to if the service actually requested cannot + be found. Note that the square brackets are <emphasis>NOT</emphasis> + given in the parameter value (see example below).</para> + + <para>There is no default value for this parameter. If this + parameter is not given, attempting to connect to a nonexistent + service results in an error.</para> + + <para>Typically the default service would be a <link linkend="GUESTOK"> + <parameter moreinfo="none">guest ok</parameter></link>, <link linkend="READONLY"> + <parameter moreinfo="none">read-only</parameter></link> service.</para> + + <para>Also note that the apparent service name will be changed + to equal that of the requested service, this is very useful as it + allows you to use macros like <parameter moreinfo="none">%S</parameter> to make + a wildcard service.</para> + + <para>Note also that any "_" characters in the name of the service + used in the default service will get mapped to a "/". This allows for + interesting things.</para> + +<para>Default: <emphasis><parameter>default service</parameter> = +</emphasis> +</para> +<para>Example: <emphasis><parameter>default service</parameter> = pub +</emphasis> +</para> +</listitem></varlistentry> +<varlistentry> +<indexterm significance="preferred"><primary>defer sharing violations</primary></indexterm><term><anchor id="DEFERSHARINGVIOLATIONS"/>defer sharing violations (G)</term><listitem> + <para> + Windows allows specifying how a file will be shared with + other processes when it is opened. Sharing violations occur when + a file is opened by a different process using options that violate + the share settings specified by other processes. This parameter causes + smbd to act as a Windows server does, and defer returning a "sharing + violation" error message for up to one second, allowing the client + to close the file causing the violation in the meantime. + </para> + + <para>Unix by default does not have this behaviour.</para> + + <para> + There should be no reason to turn off this parameter, as it is + designed to enable Samba to more correctly emulate Windows. + </para> + +<para>Default: <emphasis><parameter>defer sharing violations</parameter> = True +</emphasis> +</para> + +</listitem></varlistentry> +<varlistentry> +<indexterm significance="preferred"><primary>delete group script</primary></indexterm><term><anchor id="DELETEGROUPSCRIPT"/>delete group script (G)</term><listitem> + <para>This is the full pathname to a script that will + be run <emphasis>AS ROOT</emphasis> <citerefentry><refentrytitle>smbd</refentrytitle> + <manvolnum>8</manvolnum></citerefentry> when a group is requested to be deleted. + It will expand any <parameter moreinfo="none">%g</parameter> to the group name passed. + This script is only useful for installations using the Windows NT domain administration tools. + </para> + +<para>Default: <emphasis><parameter>delete group script</parameter> = +</emphasis> +</para> + +</listitem></varlistentry> +<varlistentry> +<indexterm significance="preferred"><primary>deleteprinter command</primary></indexterm><term><anchor id="DELETEPRINTERCOMMAND"/>deleteprinter command (G)</term><listitem> + <para>With the introduction of MS-RPC based printer + support for Windows NT/2000 clients in Samba 2.2, it is now + possible to delete printer at run time by issuing the + DeletePrinter() RPC call.</para> + + <para>For a Samba host this means that the printer must be + physically deleted from underlying printing system. The <parameter moreinfo="none"> + deleteprinter command</parameter> defines a script to be run which + will perform the necessary operations for removing the printer + from the print system and from <filename moreinfo="none">smb.conf</filename>. + </para> + + <para>The <parameter moreinfo="none">deleteprinter command</parameter> is + automatically called with only one parameter: <parameter moreinfo="none"> + "printer name"</parameter>.</para> + + <para>Once the <parameter moreinfo="none">deleteprinter command</parameter> has + been executed, <command moreinfo="none">smbd</command> will reparse the <filename moreinfo="none"> + smb.conf</filename> to associated printer no longer exists. + If the sharename is still valid, then <command moreinfo="none">smbd +</command> will return an ACCESS_DENIED error to the client.</para> + +<para>Default: <emphasis><parameter>deleteprinter command</parameter> = +</emphasis> +</para> +<para>Example: <emphasis><parameter>deleteprinter command</parameter> = /usr/bin/removeprinter +</emphasis> +</para> +</listitem></varlistentry> +<varlistentry> +<indexterm significance="preferred"><primary>delete readonly</primary></indexterm><term><anchor id="DELETEREADONLY"/>delete readonly (S)</term><listitem> + <para>This parameter allows readonly files to be deleted. + This is not normal DOS semantics, but is allowed by UNIX.</para> + + <para>This option may be useful for running applications such + as rcs, where UNIX file ownership prevents changing file + permissions, and DOS semantics prevent deletion of a read only file.</para> + +<para>Default: <emphasis><parameter>delete readonly</parameter> = no +</emphasis> +</para> + +</listitem></varlistentry> +<varlistentry> +<indexterm significance="preferred"><primary>delete share command</primary></indexterm><term><anchor id="DELETESHARECOMMAND"/>delete share command (G)</term><listitem> + <para>Samba 2.2.0 introduced the ability to dynamically + add and delete shares via the Windows NT 4.0 Server Manager. The + <parameter moreinfo="none">delete share command</parameter> is used to define an + external program or script which will remove an existing service + definition from <filename moreinfo="none">smb.conf</filename>. In order to successfully + execute the <parameter moreinfo="none">delete share command</parameter>, <command moreinfo="none">smbd</command> + requires that the administrator be connected using a root account (i.e. + uid == 0). + </para> + + <para> + When executed, <command moreinfo="none">smbd</command> will automatically invoke the + <parameter moreinfo="none">delete share command</parameter> with two parameters. + </para> + + <itemizedlist> + <listitem> + <para><parameter moreinfo="none">configFile</parameter> - the location + of the global <filename moreinfo="none">smb.conf</filename> file. + </para> + </listitem> + + <listitem> + <para><parameter moreinfo="none">shareName</parameter> - the name of + the existing service. + </para> + </listitem> + </itemizedlist> + + <para> + This parameter is only used to remove file shares. To delete printer shares, + see the <link linkend="DELETEPRINTERCOMMAND"><parameter moreinfo="none">deleteprinter + command</parameter></link>. + </para> + +<para>Default: <emphasis><parameter>delete share command</parameter> = +</emphasis> +</para> +<para>Example: <emphasis><parameter>delete share command</parameter> = /usr/local/bin/delshare +</emphasis> +</para> +</listitem></varlistentry> +<varlistentry> +<indexterm significance="preferred"><primary>delete user from group script</primary></indexterm><term><anchor id="DELETEUSERFROMGROUPSCRIPT"/>delete user from group script (G)</term><listitem> + <para>Full path to the script that will be called when + a user is removed from a group using the Windows NT domain administration + tools. It will be run by <citerefentry><refentrytitle>smbd</refentrytitle> + <manvolnum>8</manvolnum></citerefentry> <emphasis>AS ROOT</emphasis>. + Any <parameter moreinfo="none">%g</parameter> will be replaced with the group name and + any <parameter moreinfo="none">%u</parameter> will be replaced with the user name. +</para> + +<para>Default: <emphasis><parameter>delete user from group script</parameter> = +</emphasis> +</para> +<para>Example: <emphasis><parameter>delete user from group script</parameter> = /usr/sbin/deluser %u %g +</emphasis> +</para> +</listitem></varlistentry> +<varlistentry> +<indexterm significance="preferred"><primary>delete user script</primary></indexterm><term><anchor id="DELETEUSERSCRIPT"/>delete user script (G)</term><listitem> + <para>This is the full pathname to a script that will + be run by <citerefentry><refentrytitle>smbd</refentrytitle> + <manvolnum>8</manvolnum></citerefentry> when managing users + with remote RPC (NT) tools. + </para> + + <para>This script is called when a remote client removes a user + from the server, normally using 'User Manager for Domains' or + <command moreinfo="none">rpcclient</command>.</para> + + <para>This script should delete the given UNIX username.</para> + +<para>Default: <emphasis><parameter>delete user script</parameter> = +</emphasis> +</para> +<para>Example: <emphasis><parameter>delete user script</parameter> = /usr/local/samba/bin/del_user %u +</emphasis> +</para> +</listitem></varlistentry> +<varlistentry> +<indexterm significance="preferred"><primary>delete veto files</primary></indexterm><term><anchor id="DELETEVETOFILES"/>delete veto files (S)</term><listitem> + <para>This option is used when Samba is attempting to + delete a directory that contains one or more vetoed directories + (see the <link linkend="VETOFILES"><parameter moreinfo="none">veto files</parameter></link> + option). If this option is set to <constant>no</constant> (the default) then if a vetoed + directory contains any non-vetoed files or directories then the + directory delete will fail. This is usually what you want.</para> + + <para>If this option is set to <constant>yes</constant>, then Samba + will attempt to recursively delete any files and directories within + the vetoed directory. This can be useful for integration with file + serving systems such as NetAtalk which create meta-files within + directories you might normally veto DOS/Windows users from seeing + (e.g. <filename moreinfo="none">.AppleDouble</filename>)</para> + + <para>Setting <command moreinfo="none">delete veto files = yes</command> allows these + directories to be transparently deleted when the parent directory + is deleted (so long as the user has permissions to do so).</para> + +<para>Default: <emphasis><parameter>delete veto files</parameter> = no +</emphasis> +</para> + +</listitem></varlistentry> +<varlistentry> +<indexterm significance="preferred"><primary>dfree command</primary></indexterm><term><anchor id="DFREECOMMAND"/>dfree command (G)</term><listitem> + + <para>The <parameter moreinfo="none">dfree command</parameter> setting + should only be used on systems where a problem occurs with the + internal disk space calculations. This has been known to happen + with Ultrix, but may occur with other operating systems. The + symptom that was seen was an error of "Abort Retry + Ignore" at the end of each directory listing.</para> + + <para>This setting allows the replacement of the internal routines to + calculate the total disk space and amount available with an external + routine. The example below gives a possible script that might fulfill + this function.</para> + + <para>The external program will be passed a single parameter indicating + a directory in the filesystem being queried. This will typically consist + of the string <filename moreinfo="none">./</filename>. The script should return two + integers in ASCII. The first should be the total disk space in blocks, + and the second should be the number of available blocks. An optional + third return value can give the block size in bytes. The default + blocksize is 1024 bytes.</para> + + <para>Note: Your script should <emphasis>NOT</emphasis> be setuid or + setgid and should be owned by (and writeable only by) root!</para> + + <para>Where the script dfree (which must be made executable) could be:</para> + +<para><programlisting format="linespecific"> +#!/bin/sh +df $1 | tail -1 | awk '{print $2" "$4}' +</programlisting></para> + + <para>or perhaps (on Sys V based systems):</para> + +<para><programlisting format="linespecific"> +#!/bin/sh +/usr/bin/df -k $1 | tail -1 | awk '{print $3" "$5}' +</programlisting></para> + + <para>Note that you may have to replace the command names with full path names on some systems.</para> + + +<para>Default: <emphasis><parameter>dfree command</parameter> = +# By default internal routines for + determining the disk capacity and remaining space will be used. +</emphasis> +</para> +<para>Example: <emphasis><parameter>dfree command</parameter> = /usr/local/samba/bin/dfree +</emphasis> +</para> +</listitem></varlistentry> +<varlistentry> +<indexterm significance="preferred"><primary>directory mode</primary><see>directory mask</see></indexterm><term><anchor id="DIRECTORYMODE"/>directory mode</term><listitem><para>This parameter is a synonym for directory mask.</para></listitem></varlistentry><varlistentry> +<indexterm significance="preferred"><primary>directory mask</primary></indexterm><term><anchor id="DIRECTORYMASK"/>directory mask (S)</term><listitem> + <para>This parameter is the octal modes which are + used when converting DOS modes to UNIX modes when creating UNIX + directories.</para> + + <para>When a directory is created, the necessary permissions are + calculated according to the mapping from DOS modes to UNIX permissions, + and the resulting UNIX mode is then bit-wise 'AND'ed with this + parameter. This parameter may be thought of as a bit-wise MASK for + the UNIX modes of a directory. Any bit <emphasis>not</emphasis> set + here will be removed from the modes set on a directory when it is + created.</para> + + <para>The default value of this parameter removes the 'group' + and 'other' write bits from the UNIX mode, allowing only the + user who owns the directory to modify it.</para> + + <para>Following this Samba will bit-wise 'OR' the UNIX mode + created from this parameter with the value of the <link linkend="FORCEDIRECTORYMODE"> + <parameter moreinfo="none">force directory mode</parameter></link> parameter. + This parameter is set to 000 by default (i.e. no extra mode bits are added).</para> + + <para>Note that this parameter does not apply to permissions + set by Windows NT/2000 ACL editors. If the administrator wishes to enforce + a mask on access control lists also, they need to set the <link linkend="DIRECTORYSECURITYMASK"> + <parameter moreinfo="none">directory security mask</parameter></link>.</para> + +<para>Default: <emphasis><parameter>directory mask</parameter> = 0755 +</emphasis> +</para> +<para>Example: <emphasis><parameter>directory mask</parameter> = 0775 +</emphasis> +</para> +</listitem></varlistentry> +<varlistentry> +<indexterm significance="preferred"><primary>directory security mask</primary></indexterm><term><anchor id="DIRECTORYSECURITYMASK"/>directory security mask (S)</term><listitem> + <para>This parameter controls what UNIX permission bits + can be modified when a Windows NT client is manipulating the UNIX + permission on a directory using the native NT security dialog + box.</para> + + <para>This parameter is applied as a mask (AND'ed with) to + the changed permission bits, thus preventing any bits not in + this mask from being modified. Essentially, zero bits in this + mask may be treated as a set of bits the user is not allowed + to change.</para> + + <para>If not set explicitly this parameter is set to 0777 + meaning a user is allowed to modify all the user/group/world + permissions on a directory.</para> + + <para><emphasis>Note</emphasis> that users who can access the + Samba server through other means can easily bypass this restriction, + so it is primarily useful for standalone "appliance" systems. + Administrators of most normal systems will probably want to leave + it as the default of <constant>0777</constant>.</para> + +<para>Default: <emphasis><parameter>directory security mask</parameter> = 0777 +</emphasis> +</para> +<para>Example: <emphasis><parameter>directory security mask</parameter> = 0700 +</emphasis> +</para> +</listitem></varlistentry> +<varlistentry> +<indexterm significance="preferred"><primary>disable netbios</primary></indexterm><term><anchor id="DISABLENETBIOS"/>disable netbios (G)</term><listitem> + <para>Enabling this parameter will disable netbios support + in Samba. Netbios is the only available form of browsing in + all windows versions except for 2000 and XP. </para> + + <note><para>Clients that only support netbios won't be able to + see your samba server when netbios support is disabled. + </para></note> + +<para>Default: <emphasis><parameter>disable netbios</parameter> = no +</emphasis> +</para> + +</listitem></varlistentry> +<varlistentry> +<indexterm significance="preferred"><primary>disable spoolss</primary></indexterm><term><anchor id="DISABLESPOOLSS"/>disable spoolss (G)</term><listitem> + <para>Enabling this parameter will disable Samba's support + for the SPOOLSS set of MS-RPC's and will yield identical behavior + as Samba 2.0.x. Windows NT/2000 clients will downgrade to using + Lanman style printing commands. Windows 9x/ME will be uneffected by + the parameter. However, this will also disable the ability to upload + printer drivers to a Samba server via the Windows NT Add Printer + Wizard or by using the NT printer properties dialog window. It will + also disable the capability of Windows NT/2000 clients to download + print drivers from the Samba host upon demand. + <emphasis>Be very careful about enabling this parameter.</emphasis> +</para> + +<para>Default: <emphasis><parameter>disable spoolss</parameter> = no +</emphasis> +</para> + +</listitem></varlistentry> +<varlistentry> +<indexterm significance="preferred"><primary>display charset</primary></indexterm><term><anchor id="DISPLAYCHARSET"/>display charset (G)</term><listitem> + <para>Specifies the charset that samba will use + to print messages to stdout and stderr and SWAT will use. + Should generally be the same as the <command moreinfo="none">unix charset</command>. +</para> + +<para>Default: <emphasis><parameter>display charset</parameter> = ASCII +</emphasis> +</para> +<para>Example: <emphasis><parameter>display charset</parameter> = UTF8 +</emphasis> +</para> +</listitem></varlistentry> +<varlistentry> +<indexterm significance="preferred"><primary>dns proxy</primary></indexterm><term><anchor id="DNSPROXY"/>dns proxy (G)</term><listitem> + <para>Specifies that <citerefentry><refentrytitle>nmbd</refentrytitle> + <manvolnum>8</manvolnum></citerefentry> when acting as a WINS server and + finding that a NetBIOS name has not been registered, should treat the + NetBIOS name word-for-word as a DNS name and do a lookup with the DNS server + for that name on behalf of the name-querying client.</para> + + <para>Note that the maximum length for a NetBIOS name is 15 + characters, so the DNS name (or DNS alias) can likewise only be + 15 characters, maximum.</para> + + <para><command moreinfo="none">nmbd</command> spawns a second copy of itself to do the + DNS name lookup requests, as doing a name lookup is a blocking + action.</para> + +<para>Default: <emphasis><parameter>dns proxy</parameter> = yes +</emphasis> +</para> + +</listitem></varlistentry> +<varlistentry> +<indexterm significance="preferred"><primary>domain logons</primary></indexterm><term><anchor id="DOMAINLOGONS"/>domain logons (G)</term><listitem> + <para> + If set to <constant>yes</constant>, the Samba server will + provide the netlogon service for Windows 9X network logons for the + <link linkend="WORKGROUP"> + <parameter moreinfo="none">workgroup</parameter></link> it is in. + This will also cause the Samba server to act as a domain + controller for NT4 style domain services. For more details on + setting up this feature see the Domain Control chapter of the + Samba HOWTO Collection. + </para> + +<para>Default: <emphasis><parameter>domain logons</parameter> = no +</emphasis> +</para> + +</listitem></varlistentry> +<varlistentry> +<indexterm significance="preferred"><primary>domain master</primary></indexterm><term><anchor id="DOMAINMASTER"/>domain master (G)</term><listitem> + <para>Tell <citerefentry><refentrytitle>smbd</refentrytitle> + <manvolnum>8</manvolnum></citerefentry> to enable WAN-wide browse list + collation. Setting this option causes <command moreinfo="none">nmbd</command> to + claim a special domain specific NetBIOS name that identifies + it as a domain master browser for its given <link linkend="WORKGROUP"> + <parameter moreinfo="none">workgroup</parameter></link>. Local master browsers + in the same <parameter moreinfo="none">workgroup</parameter> on broadcast-isolated + subnets will give this <command moreinfo="none">nmbd</command> their local browse lists, + and then ask <citerefentry><refentrytitle>smbd</refentrytitle> + <manvolnum>8</manvolnum></citerefentry> for a complete copy of the browse + list for the whole wide area network. Browser clients will then contact + their local master browser, and will receive the domain-wide browse list, + instead of just the list for their broadcast-isolated subnet.</para> + + <para>Note that Windows NT Primary Domain Controllers expect to be + able to claim this <parameter moreinfo="none">workgroup</parameter> specific special + NetBIOS name that identifies them as domain master browsers for + that <parameter moreinfo="none">workgroup</parameter> by default (i.e. there is no + way to prevent a Windows NT PDC from attempting to do this). This + means that if this parameter is set and <command moreinfo="none">nmbd</command> claims + the special name for a <parameter moreinfo="none">workgroup</parameter> before a Windows + NT PDC is able to do so then cross subnet browsing will behave + strangely and may fail.</para> + + <para>If <link linkend="DOMAINLOGONS"><command moreinfo="none">domain logons = yes</command> + </link>, then the default behavior is to enable the <parameter moreinfo="none">domain + master</parameter> parameter. If <parameter moreinfo="none">domain logons</parameter> is + not enabled (the default setting), then neither will <parameter moreinfo="none">domain + master</parameter> be enabled by default.</para> + + +<para>Default: <emphasis><parameter>domain master</parameter> = auto +</emphasis> +</para> + +</listitem></varlistentry> +<varlistentry> +<indexterm significance="preferred"><primary>dont descend</primary></indexterm><term><anchor id="DONTDESCEND"/>dont descend (S)</term><listitem> + <para>There are certain directories on some systems + (e.g., the <filename moreinfo="none">/proc</filename> tree under Linux) that are either not + of interest to clients or are infinitely deep (recursive). This + parameter allows you to specify a comma-delimited list of directories + that the server should always show as empty.</para> + + <para>Note that Samba can be very fussy about the exact format + of the "dont descend" entries. For example you may need <filename moreinfo="none"> + ./proc</filename> instead of just <filename moreinfo="none">/proc</filename>. + Experimentation is the best policy :-) </para> + +<para>Default: <emphasis><parameter>dont descend</parameter> = +</emphasis> +</para> +<para>Example: <emphasis><parameter>dont descend</parameter> = /proc,/dev +</emphasis> +</para> +</listitem></varlistentry> +<varlistentry> +<indexterm significance="preferred"><primary>dos charset</primary></indexterm><term><anchor id="DOSCHARSET"/>dos charset (G)</term><listitem> + <para>DOS SMB clients assume the server has + the same charset as they do. This option specifies which + charset Samba should talk to DOS clients. + </para> + + <para>The default depends on which charsets you have installed. + Samba tries to use charset 850 but falls back to ASCII in + case it is not available. Run <citerefentry><refentrytitle>testparm</refentrytitle> + <manvolnum>1</manvolnum></citerefentry> to check the default on your system.</para> + +<para><emphasis>No default</emphasis></para> + +</listitem></varlistentry> +<varlistentry> +<indexterm significance="preferred"><primary>dos filemode</primary></indexterm><term><anchor id="DOSFILEMODE"/>dos filemode (S)</term><listitem> + <para> The default behavior in Samba is to provide + UNIX-like behavior where only the owner of a file/directory is + able to change the permissions on it. However, this behavior + is often confusing to DOS/Windows users. Enabling this parameter + allows a user who has write access to the file (by whatever + means) to modify the permissions on it. Note that a user + belonging to the group owning the file will not be allowed to + change permissions if the group is only granted read access. + Ownership of the file/directory is not changed, only the permissions + are modified.</para> + +<para>Default: <emphasis><parameter>dos filemode</parameter> = no +</emphasis> +</para> + +</listitem></varlistentry> +<varlistentry> +<indexterm significance="preferred"><primary>dos filetime resolution</primary></indexterm><term><anchor id="DOSFILETIMERESOLUTION"/>dos filetime resolution (S)</term><listitem> + <para>Under the DOS and Windows FAT filesystem, the finest + granularity on time resolution is two seconds. Setting this parameter + for a share causes Samba to round the reported time down to the + nearest two second boundary when a query call that requires one second + resolution is made to <citerefentry><refentrytitle>smbd</refentrytitle> + <manvolnum>8</manvolnum></citerefentry>.</para> + + <para>This option is mainly used as a compatibility option for Visual + C++ when used against Samba shares. If oplocks are enabled on a + share, Visual C++ uses two different time reading calls to check if a + file has changed since it was last read. One of these calls uses a + one-second granularity, the other uses a two second granularity. As + the two second call rounds any odd second down, then if the file has a + timestamp of an odd number of seconds then the two timestamps will not + match and Visual C++ will keep reporting the file has changed. Setting + this option causes the two timestamps to match, and Visual C++ is + happy.</para> + +<para>Default: <emphasis><parameter>dos filetime resolution</parameter> = no +</emphasis> +</para> + +</listitem></varlistentry> +<varlistentry> +<indexterm significance="preferred"><primary>dos filetimes</primary></indexterm><term><anchor id="DOSFILETIMES"/>dos filetimes (S)</term><listitem> + <para>Under DOS and Windows, if a user can write to a + file they can change the timestamp on it. Under POSIX semantics, + only the owner of the file or root may change the timestamp. By + default, Samba runs with POSIX semantics and refuses to change the + timestamp on a file if the user <command moreinfo="none">smbd</command> is acting + on behalf of is not the file owner. Setting this option to <constant> + yes</constant> allows DOS semantics and <citerefentry><refentrytitle>smbd</refentrytitle> + <manvolnum>8</manvolnum></citerefentry> will change the file + timestamp as DOS requires. Due to changes in Microsoft Office 2000 and beyond, + the default for this parameter has been changed from "no" to "yes" in Samba 3.0.14 + and above. Microsoft Excel will display dialog box warnings about the file being + changed by another user if this parameter is not set to "yes" and files are being + shared between users. + </para> + +<para>Default: <emphasis><parameter>dos filetimes</parameter> = yes +</emphasis> +</para> + +</listitem></varlistentry> +<varlistentry> +<indexterm significance="preferred"><primary>ea support</primary></indexterm><term><anchor id="EASUPPORT"/>ea support (S)</term><listitem> + <para>This boolean parameter controls whether <citerefentry><refentrytitle>smbd</refentrytitle> + <manvolnum>8</manvolnum></citerefentry> will allow clients to attempt to store OS/2 style Extended + attributes on a share. In order to enable this parameter the underlying filesystem exported by + the share must support extended attributes (such as provided on XFS and EXT3 on Linux, with the + correct kernel patches). On Linux the filesystem must have been mounted with the mount + option user_xattr in order for extended attributes to work, also + extended attributes must be compiled into the Linux kernel.</para> + +<para>Default: <emphasis><parameter>ea support</parameter> = no +</emphasis> +</para> + +</listitem></varlistentry> +<varlistentry> +<indexterm significance="preferred"><primary>enable privileges</primary></indexterm><term><anchor id="ENABLEPRIVILEGES"/>enable privileges (G)</term><listitem> + <para>This parameter controls whether or not smbd will honor + privileges assigned to specific SIDs via either <command>net rpc rights</command> + or one of the Windows user and group manager tools. This parameter is + disabled by default to prevent members of the Domain Admins group from + being able to assign privileges to users or groups which can then result in certain + smbd operations running as root that would normally run under the context + of the connected user. </para> + + <para>An example of how privileges can be used is to assign + the right to join clients to a Samba controlled domain without + providing root access to the server via smbd.</para> + + <para>Please read the extended description provided in the + Samba documentation before enabling this option.</para> + + +<para>Default: <emphasis><parameter>enable privileges</parameter> = no +</emphasis> +</para> + +</listitem></varlistentry> +<varlistentry> +<indexterm significance="preferred"><primary>enable rid algorithm</primary></indexterm><term><anchor id="ENABLERIDALGORITHM"/>enable rid algorithm (G)</term><listitem> + <para>This option is used to control whether or not smbd in Samba 3.0 should fallback + to the algorithm used by Samba 2.2 to generate user and group RIDs. The longterm + development goal is to remove the algorithmic mappings of RIDs altogether, but + this has proved to be difficult. This parameter is mainly provided so that + developers can turn the algorithm on and off and see what breaks. This parameter + should not be disabled by non-developers because certain features in Samba will fail + to work without it. + </para> + + +<para>Default: <emphasis><parameter>enable rid algorithm</parameter> = yes +</emphasis> +</para> + +</listitem></varlistentry> +<varlistentry> +<indexterm significance="preferred"><primary>encrypt passwords</primary></indexterm><term><anchor id="ENCRYPTPASSWORDS"/>encrypt passwords (G)</term><listitem> + <para>This boolean controls whether encrypted passwords + will be negotiated with the client. Note that Windows NT 4.0 SP3 and + above and also Windows 98 will by default expect encrypted passwords + unless a registry entry is changed. To use encrypted passwords in + Samba see the chapter "User Database" in the Samba HOWTO Collection. + </para> + + <para> + MS Windows clients that expect Microsoft encrypted passwords and that + do not have plain text password support enabled will be able to + connect only to a Samba server that has encypted password support + enabled and for which the user accounts have a valid encrypted password. + Refer to the smbpasswd command man page for information regarding the + creation of encrypted passwords for user accounts. + </para> + + <para> + The use of plain text passwords is NOT advised as support for this feature + is no longer maintained in Microsoft Windows products. If you want to use + plain text passwords you must set this parameter to no. + </para> + + <para>In order for encrypted passwords to work correctly + <citerefentry><refentrytitle>smbd</refentrytitle> + <manvolnum>8</manvolnum></citerefentry> must either + have access to a local <citerefentry><refentrytitle>smbpasswd</refentrytitle> + <manvolnum>5</manvolnum></citerefentry> file (see the <citerefentry><refentrytitle>smbpasswd</refentrytitle> + <manvolnum>8</manvolnum></citerefentry> program for information on how to set up + and maintain this file), or set the <link linkend="SECURITY">security = [server|domain|ads]</link> parameter which + causes <command moreinfo="none">smbd</command> to authenticate against another + server.</para> + +<para>Default: <emphasis><parameter>encrypt passwords</parameter> = yes +</emphasis> +</para> + +</listitem></varlistentry> +<varlistentry> +<indexterm significance="preferred"><primary>enhanced browsing</primary></indexterm><term><anchor id="ENHANCEDBROWSING"/>enhanced browsing (G)</term><listitem> + <para>This option enables a couple of enhancements to + cross-subnet browse propagation that have been added in Samba + but which are not standard in Microsoft implementations. + </para> + + <para>The first enhancement to browse propagation consists of a regular + wildcard query to a Samba WINS server for all Domain Master Browsers, + followed by a browse synchronization with each of the returned + DMBs. The second enhancement consists of a regular randomised browse + synchronization with all currently known DMBs.</para> + + <para>You may wish to disable this option if you have a problem with empty + workgroups not disappearing from browse lists. Due to the restrictions + of the browse protocols these enhancements can cause a empty workgroup + to stay around forever which can be annoying.</para> + + <para>In general you should leave this option enabled as it makes + cross-subnet browse propagation much more reliable.</para> + + +<para>Default: <emphasis><parameter>enhanced browsing</parameter> = yes +</emphasis> +</para> + +</listitem></varlistentry> +<varlistentry> +<indexterm significance="preferred"><primary>enumports command</primary></indexterm><term><anchor id="ENUMPORTSCOMMAND"/>enumports command (G)</term><listitem> + <para>The concept of a "port" is fairly foreign + to UNIX hosts. Under Windows NT/2000 print servers, a port + is associated with a port monitor and generally takes the form of + a local port (i.e. LPT1:, COM1:, FILE:) or a remote port + (i.e. LPD Port Monitor, etc...). By default, Samba has only one + port defined--<constant>"Samba Printer Port"</constant>. Under + Windows NT/2000, all printers must have a valid port name. + If you wish to have a list of ports displayed (<command moreinfo="none">smbd + </command> does not use a port name for anything) other than + the default <constant>"Samba Printer Port"</constant>, you + can define <parameter moreinfo="none">enumports command</parameter> to point to + a program which should generate a list of ports, one per line, + to standard output. This listing will then be used in response + to the level 1 and 2 EnumPorts() RPC.</para> + +<para>Default: <emphasis><parameter>enumports command</parameter> = +</emphasis> +</para> +<para>Example: <emphasis><parameter>enumports command</parameter> = /usr/bin/listports +</emphasis> +</para> +</listitem></varlistentry> +<varlistentry> +<indexterm significance="preferred"><primary>fake directory create times</primary></indexterm><term><anchor id="FAKEDIRECTORYCREATETIMES"/>fake directory create times (S)</term><listitem> + <para>NTFS and Windows VFAT file systems keep a create + time for all files and directories. This is not the same as the + ctime - status change time - that Unix keeps, so Samba by default + reports the earliest of the various times Unix does keep. Setting + this parameter for a share causes Samba to always report midnight + 1-1-1980 as the create time for directories.</para> + + <para>This option is mainly used as a compatibility option for + Visual C++ when used against Samba shares. Visual C++ generated + makefiles have the object directory as a dependency for each object + file, and a make rule to create the directory. Also, when NMAKE + compares timestamps it uses the creation time when examining a + directory. Thus the object directory will be created if it does not + exist, but once it does exist it will always have an earlier + timestamp than the object files it contains.</para> + + <para>However, Unix time semantics mean that the create time + reported by Samba will be updated whenever a file is created or + or deleted in the directory. NMAKE finds all object files in + the object directory. The timestamp of the last one built is then + compared to the timestamp of the object directory. If the + directory's timestamp if newer, then all object files + will be rebuilt. Enabling this option + ensures directories always predate their contents and an NMAKE build + will proceed as expected.</para> + +<para>Default: <emphasis><parameter>fake directory create times</parameter> = no +</emphasis> +</para> + +</listitem></varlistentry> +<varlistentry> +<indexterm significance="preferred"><primary>fake oplocks</primary></indexterm><term><anchor id="FAKEOPLOCKS"/>fake oplocks (S)</term><listitem> + <para>Oplocks are the way that SMB clients get permission + from a server to locally cache file operations. If a server grants + an oplock (opportunistic lock) then the client is free to assume + that it is the only one accessing the file and it will aggressively + cache file data. With some oplock types the client may even cache + file open/close operations. This can give enormous performance benefits. + </para> + + <para>When you set <command moreinfo="none">fake oplocks = yes</command>, <citerefentry> + <refentrytitle>smbd</refentrytitle><manvolnum>8</manvolnum></citerefentry> will + always grant oplock requests no matter how many clients are using the file.</para> + + <para>It is generally much better to use the real <link linkend="OPLOCKS"> + <parameter moreinfo="none">oplocks</parameter></link> support rather + than this parameter.</para> + + <para>If you enable this option on all read-only shares or + shares that you know will only be accessed from one client at a + time such as physically read-only media like CDROMs, you will see + a big performance improvement on many operations. If you enable + this option on shares where multiple clients may be accessing the + files read-write at the same time you can get data corruption. Use + this option carefully!</para> + +<para>Default: <emphasis><parameter>fake oplocks</parameter> = no +</emphasis> +</para> + +</listitem></varlistentry> +<varlistentry> +<indexterm significance="preferred"><primary>follow symlinks</primary></indexterm><term><anchor id="FOLLOWSYMLINKS"/>follow symlinks (S)</term><listitem> + <para>This parameter allows the Samba administrator + to stop <citerefentry><refentrytitle>smbd</refentrytitle> + <manvolnum>8</manvolnum></citerefentry> from following symbolic + links in a particular share. Setting this + parameter to <constant>no</constant> prevents any file or directory + that is a symbolic link from being followed (the user will get an + error). This option is very useful to stop users from adding a + symbolic link to <filename moreinfo="none">/etc/passwd</filename> in their home + directory for instance. However it will slow filename lookups + down slightly.</para> + + <para>This option is enabled (i.e. <command moreinfo="none">smbd</command> will + follow symbolic links) by default.</para> + +<para>Default: <emphasis><parameter>follow symlinks</parameter> = yes +</emphasis> +</para> + +</listitem></varlistentry> +<varlistentry> +<indexterm significance="preferred"><primary>force create mode</primary></indexterm><term><anchor id="FORCECREATEMODE"/>force create mode (S)</term><listitem> + <para>This parameter specifies a set of UNIX mode bit + permissions that will <emphasis>always</emphasis> be set on a + file created by Samba. This is done by bitwise 'OR'ing these bits onto + the mode bits of a file that is being created or having its + permissions changed. The default for this parameter is (in octal) + 000. The modes in this parameter are bitwise 'OR'ed onto the file + mode after the mask set in the <parameter moreinfo="none">create mask</parameter> + parameter is applied.</para> + + <para>The example below would force all created files to have read and execute + permissions set for 'group' and 'other' as well as the + read/write/execute bits set for the 'user'.</para> + + +<para>Default: <emphasis><parameter>force create mode</parameter> = 000 +</emphasis> +</para> +<para>Example: <emphasis><parameter>force create mode</parameter> = 0755 +</emphasis> +</para> +</listitem></varlistentry> +<varlistentry> +<indexterm significance="preferred"><primary>force directory mode</primary></indexterm><term><anchor id="FORCEDIRECTORYMODE"/>force directory mode (S)</term><listitem> + <para>This parameter specifies a set of UNIX mode bit + permissions that will <emphasis>always</emphasis> be set on a directory + created by Samba. This is done by bitwise 'OR'ing these bits onto the + mode bits of a directory that is being created. The default for this + parameter is (in octal) 0000 which will not add any extra permission + bits to a created directory. This operation is done after the mode + mask in the parameter <parameter moreinfo="none">directory mask</parameter> is + applied.</para> + + <para>The example below would force all created directories to have read and execute + permissions set for 'group' and 'other' as well as the + read/write/execute bits set for the 'user'.</para> + +<para>Default: <emphasis><parameter>force directory mode</parameter> = 000 +</emphasis> +</para> +<para>Example: <emphasis><parameter>force directory mode</parameter> = 0755 +</emphasis> +</para> +</listitem></varlistentry> +<varlistentry> +<indexterm significance="preferred"><primary>force directory security mode</primary></indexterm><term><anchor id="FORCEDIRECTORYSECURITYMODE"/>force directory security mode (S)</term><listitem> + <para>This parameter controls what UNIX permission bits + can be modified when a Windows NT client is manipulating the UNIX + permission on a directory using the native NT security dialog box.</para> + + <para>This parameter is applied as a mask (OR'ed with) to the + changed permission bits, thus forcing any bits in this mask that + the user may have modified to be on. Essentially, one bits in this + mask may be treated as a set of bits that, when modifying security + on a directory, the user has always set to be 'on'.</para> + + <para>If not set explicitly this parameter is 000, which + allows a user to modify all the user/group/world permissions on a + directory without restrictions.</para> + + <note><para>Users who can access the + Samba server through other means can easily bypass this restriction, + so it is primarily useful for standalone "appliance" systems. + Administrators of most normal systems will probably want to leave + it set as 0000.</para></note> + + +<para>Default: <emphasis><parameter>force directory security mode</parameter> = 0 +</emphasis> +</para> +<para>Example: <emphasis><parameter>force directory security mode</parameter> = 700 +</emphasis> +</para> +</listitem></varlistentry> +<varlistentry> +<indexterm significance="preferred"><primary>group</primary><see>force group</see></indexterm><term><anchor id="GROUP"/>group</term><listitem><para>This parameter is a synonym for force group.</para></listitem></varlistentry><varlistentry> +<indexterm significance="preferred"><primary>force group</primary></indexterm><term><anchor id="FORCEGROUP"/>force group (S)</term><listitem> + <para>This specifies a UNIX group name that will be + assigned as the default primary group for all users connecting + to this service. This is useful for sharing files by ensuring + that all access to files on service will use the named group for + their permissions checking. Thus, by assigning permissions for this + group to the files and directories within this service the Samba + administrator can restrict or allow sharing of these files.</para> + + <para>In Samba 2.0.5 and above this parameter has extended + functionality in the following way. If the group name listed here + has a '+' character prepended to it then the current user accessing + the share only has the primary group default assigned to this group + if they are already assigned as a member of that group. This allows + an administrator to decide that only users who are already in a + particular group will create files with group ownership set to that + group. This gives a finer granularity of ownership assignment. For + example, the setting <filename moreinfo="none">force group = +sys</filename> means + that only users who are already in group sys will have their default + primary group assigned to sys when accessing this Samba share. All + other users will retain their ordinary primary group.</para> + + <para>If the <link linkend="FORCEUSER"><parameter moreinfo="none">force user</parameter> + </link> parameter is also set the group specified in + <parameter moreinfo="none">force group</parameter> will override the primary group + set in <parameter moreinfo="none">force user</parameter>.</para> + + +<para>Default: <emphasis><parameter>force group</parameter> = +</emphasis> +</para> +<para>Example: <emphasis><parameter>force group</parameter> = agroup +</emphasis> +</para> +</listitem></varlistentry> +<varlistentry> +<indexterm significance="preferred"><primary>force printername</primary></indexterm><term><anchor id="FORCEPRINTERNAME"/>force printername (S)</term><listitem> + <para>When printing from Windows NT (or later), + each printer in <filename>smb.conf</filename> has two + associated names which can be used by the client. The first + is the sharename (or shortname) defined in smb.conf. This + is the only printername available for use by Windows 9x clients. + The second name associated with a printer can be seen when + browsing to the "Printers" (or "Printers and Faxes") folder + on the Samba server. This is referred to simply as the printername + (not to be confused with the <parameter>printer name</parameter> option). + </para> + + <para>When assigning a new driver to a printer on a remote + Windows compatible print server such as Samba, the Windows client + will rename the printer to match the driver name just uploaded. + This can result in confusion for users when multiple + printers are bound to the same driver. To prevent Samba from + allowing the printer's printername to differ from the sharename + defined in smb.conf, set <parameter>force printername = yes</parameter>. + </para> + + <para>Be aware that enabling this parameter may affect migrating + printers from a Windows server to Samba since Windows has no way to + force the sharename and printername to match.</para> + + <para>It is recommended that this parameter's value not be changed + once the printer is in use by clients as this could cause a user + not be able to delete printer connections from their local Printers + folder.</para> + + +<para>Default: <emphasis><parameter>force printername</parameter> = no +</emphasis> +</para> + +</listitem></varlistentry> +<varlistentry> +<indexterm significance="preferred"><primary>force security mode</primary></indexterm><term><anchor id="FORCESECURITYMODE"/>force security mode (S)</term><listitem> + <para>This parameter controls what UNIX permission + bits can be modified when a Windows NT client is manipulating + the UNIX permission on a file using the native NT security dialog + box.</para> + + <para>This parameter is applied as a mask (OR'ed with) to the + changed permission bits, thus forcing any bits in this mask that + the user may have modified to be on. Essentially, one bits in this + mask may be treated as a set of bits that, when modifying security + on a file, the user has always set to be 'on'.</para> + + <para>If not set explicitly this parameter is set to 0, + and allows a user to modify all the user/group/world permissions on a file, + with no restrictions.</para> + + <para><emphasis>Note</emphasis> that users who can access + the Samba server through other means can easily bypass this restriction, + so it is primarily useful for standalone "appliance" systems. + Administrators of most normal systems will probably want to leave + this set to 0000.</para> + + +<para>Default: <emphasis><parameter>force security mode</parameter> = 0 +</emphasis> +</para> +<para>Example: <emphasis><parameter>force security mode</parameter> = 700 +</emphasis> +</para> +</listitem></varlistentry> +<varlistentry> +<indexterm significance="preferred"><primary>force unknown acl user</primary></indexterm><term><anchor id="FORCEUNKNOWNACLUSER"/>force unknown acl user (S)</term><listitem> + <para>If this parameter is set, a Windows NT ACL that contains an unknown + SID (security descriptor, or representation of a user or group + id) as the owner or group owner of the file will be silently + mapped into the current UNIX uid or gid of the currently + connected user.</para> + + <para>This is designed to allow Windows NT clients to copy files and + folders containing ACLs that were created locally on the client + machine and contain users local to that machine only (no domain + users) to be copied to a Samba server (usually with XCOPY /O) + and have the unknown userid and groupid of the file owner map to + the current connected user. This can only be fixed correctly + when winbindd allows arbitrary mapping from any Windows NT SID + to a UNIX uid or gid.</para> + + <para>Try using this parameter when XCOPY /O gives an ACCESS_DENIED + error.</para> + +<para>Default: <emphasis><parameter>force unknown acl user</parameter> = no +</emphasis> +</para> + +</listitem></varlistentry> +<varlistentry> +<indexterm significance="preferred"><primary>force user</primary></indexterm><term><anchor id="FORCEUSER"/>force user (S)</term><listitem> + <para>This specifies a UNIX user name that will be + assigned as the default user for all users connecting to this service. + This is useful for sharing files. You should also use it carefully + as using it incorrectly can cause security problems.</para> + + <para>This user name only gets used once a connection is established. + Thus clients still need to connect as a valid user and supply a + valid password. Once connected, all file operations will be performed + as the "forced user", no matter what username the client connected + as. This can be very useful.</para> + + <para>In Samba 2.0.5 and above this parameter also causes the + primary group of the forced user to be used as the primary group + for all file activity. Prior to 2.0.5 the primary group was left + as the primary group of the connecting user (this was a bug).</para> + + +<para>Default: <emphasis><parameter>force user</parameter> = +</emphasis> +</para> +<para>Example: <emphasis><parameter>force user</parameter> = auser +</emphasis> +</para> +</listitem></varlistentry> +<varlistentry> +<indexterm significance="preferred"><primary>fstype</primary></indexterm><term><anchor id="FSTYPE"/>fstype (S)</term><listitem> + <para>This parameter allows the administrator to + configure the string that specifies the type of filesystem a share + is using that is reported by <citerefentry><refentrytitle>smbd</refentrytitle> + <manvolnum>8</manvolnum></citerefentry> when a client queries the filesystem type + for a share. The default type is <constant>NTFS</constant> for + compatibility with Windows NT but this can be changed to other + strings such as <constant>Samba</constant> or <constant>FAT + </constant> if required.</para> + +<para>Default: <emphasis><parameter>fstype</parameter> = NTFS +</emphasis> +</para> +<para>Example: <emphasis><parameter>fstype</parameter> = Samba +</emphasis> +</para> +</listitem></varlistentry> +<varlistentry> +<indexterm significance="preferred"><primary>get quota command</primary></indexterm><term><anchor id="GETQUOTACOMMAND"/>get quota command (G)</term><listitem> + <para>The <command>get quota command</command> should only be used + whenever there is no operating system API available from the OS that + samba can use.</para> + + <para>This option is only available with <command>./configure --with-sys-quotas</command>. + Or on linux when <command>./configure --with-quotas</command> was used and a working quota api + was found in the system.</para> + + <para>This parameter should specify the path to a script that + queries the quota information for the specified + user/group for the partition that + the specified directory is on.</para> + + <para>Such a script should take 3 arguments:</para> + + <itemizedlist> + <listitem><para>directory</para></listitem> + <listitem><para>type of query</para></listitem> + <listitem><para>uid of user or gid of group</para></listitem> + </itemizedlist> + + <para>The type of query can be one of :</para> + + <itemizedlist> + <listitem><para>1 - user quotas</para></listitem> + <listitem><para>2 - user default quotas (uid = -1)</para></listitem> + <listitem><para>3 - group quotas</para></listitem> + <listitem><para>4 - group default quotas (gid = -1)</para></listitem> + </itemizedlist> + + <para>This script should print one line as output with spaces between the arguments. The arguments are: + </para> + + <itemizedlist> + <listitem><para>Arg 1 - quota flags (0 = no quotas, 1 = quotas enabled, 2 = quotas enabled and enforced)</para></listitem> + <listitem><para>Arg 2 - number of currently used blocks</para></listitem> + <listitem><para>Arg 3 - the softlimit number of blocks</para></listitem> + <listitem><para>Arg 4 - the hardlimit number of blocks</para></listitem> + <listitem><para>Arg 5 - currently used number of inodes</para></listitem> + <listitem><para>Arg 6 - the softlimit number of inodes</para></listitem> + <listitem><para>Arg 7 - the hardlimit number of inodes</para></listitem> + <listitem><para>Arg 8(optional) - the number of bytes in a block(default is 1024)</para></listitem> + </itemizedlist> + +<para>Default: <emphasis><parameter>get quota command</parameter> = +</emphasis> +</para> +<para>Example: <emphasis><parameter>get quota command</parameter> = /usr/local/sbin/query_quota +</emphasis> +</para> +</listitem></varlistentry> +<varlistentry> +<indexterm significance="preferred"><primary>getwd cache</primary></indexterm><term><anchor id="GETWDCACHE"/>getwd cache (G)</term><listitem> + <para>This is a tuning option. When this is enabled a + caching algorithm will be used to reduce the time taken for getwd() + calls. This can have a significant impact on performance, especially + when the <link linkend="WIDELINKS"><parameter moreinfo="none">wide links</parameter> +</link> parameter is set to <constant>no</constant>.</para> + +<para>Default: <emphasis><parameter>getwd cache</parameter> = yes +</emphasis> +</para> + +</listitem></varlistentry> +<varlistentry> +<indexterm significance="preferred"><primary>guest account</primary></indexterm><term><anchor id="GUESTACCOUNT"/>guest account (G)</term><listitem> + <para>This is a username which will be used for access + to services which are specified as <link linkend="GUESTOK"><parameter moreinfo="none"> + guest ok</parameter></link> (see below). Whatever privileges this + user has will be available to any client connecting to the guest service. + This user must exist in the password file, but does not require + a valid login. The user account "ftp" is often a good choice + for this parameter. + </para> + + <para>On some systems the default guest account "nobody" may not + be able to print. Use another account in this case. You should test + this by trying to log in as your guest user (perhaps by using the + <command moreinfo="none">su -</command> command) and trying to print using the + system print command such as <command moreinfo="none">lpr(1)</command> or <command moreinfo="none"> + lp(1)</command>.</para> + + <para>This parameter does not accept % macros, because + many parts of the system require this value to be + constant for correct operation.</para> + +<para>Default: <emphasis><parameter>guest account</parameter> = nobody +# default can be changed at compile-time +</emphasis> +</para> +<para>Example: <emphasis><parameter>guest account</parameter> = ftp +</emphasis> +</para> +</listitem></varlistentry> +<varlistentry> +<indexterm significance="preferred"><primary>public</primary><see>guest ok</see></indexterm><term><anchor id="PUBLIC"/>public</term><listitem><para>This parameter is a synonym for guest ok.</para></listitem></varlistentry><varlistentry> +<indexterm significance="preferred"><primary>guest ok</primary></indexterm><term><anchor id="GUESTOK"/>guest ok (S)</term><listitem> + <para>If this parameter is <constant>yes</constant> for + a service, then no password is required to connect to the service. + Privileges will be those of the <link linkend="GUESTACCOUNT"><parameter moreinfo="none"> + guest account</parameter></link>.</para> + + <para>This paramater nullifies the benifits of setting + <link linkend="RESTRICTANONYMOUS"><parameter moreinfo="none">restrict + anonymous</parameter></link> = 2</para> + + <para>See the section below on <link linkend="SECURITY"><parameter moreinfo="none"> + security</parameter></link> for more information about this option. + </para> + +<para>Default: <emphasis><parameter>guest ok</parameter> = no +</emphasis> +</para> + +</listitem></varlistentry> +<varlistentry> +<indexterm significance="preferred"><primary>only guest</primary><see>guest only</see></indexterm><term><anchor id="ONLYGUEST"/>only guest</term><listitem><para>This parameter is a synonym for guest only.</para></listitem></varlistentry><varlistentry> +<indexterm significance="preferred"><primary>guest only</primary></indexterm><term><anchor id="GUESTONLY"/>guest only (S)</term><listitem> + <para>If this parameter is <constant>yes</constant> for + a service, then only guest connections to the service are permitted. + This parameter will have no effect if <link linkend="GUESTOK"> + <parameter moreinfo="none">guest ok</parameter></link> is not set for the service.</para> + + <para>See the section below on <link linkend="SECURITY"><parameter moreinfo="none"> + security</parameter></link> for more information about this option. + </para> + +<para>Default: <emphasis><parameter>guest only</parameter> = no +</emphasis> +</para> + +</listitem></varlistentry> +<varlistentry> +<indexterm significance="preferred"><primary>hide dot files</primary></indexterm><term><anchor id="HIDEDOTFILES"/>hide dot files (S)</term><listitem> + <para>This is a boolean parameter that controls whether + files starting with a dot appear as hidden files.</para> + +<para>Default: <emphasis><parameter>hide dot files</parameter> = yes +</emphasis> +</para> + +</listitem></varlistentry> +<varlistentry> +<indexterm significance="preferred"><primary>hide files</primary></indexterm><term><anchor id="HIDEFILES"/>hide files (S)</term><listitem> + <para>This is a list of files or directories that are not + visible but are accessible. The DOS 'hidden' attribute is applied + to any files or directories that match.</para> + + <para>Each entry in the list must be separated by a '/', + which allows spaces to be included in the entry. '*' + and '?' can be used to specify multiple files or directories + as in DOS wildcards.</para> + + <para>Each entry must be a Unix path, not a DOS path and must + not include the Unix directory separator '/'.</para> + + <para>Note that the case sensitivity option is applicable + in hiding files.</para> + + <para>Setting this parameter will affect the performance of Samba, + as it will be forced to check all files and directories for a match + as they are scanned.</para> + +<para>Default: <emphasis><parameter>hide files</parameter> = +# no file are hidden +</emphasis> +</para> +<para>Example: <emphasis><parameter>hide files</parameter> = /.*/DesktopFolderDB/TrashFor%m/resource.frk/ +# +The above example is based on files that the Macintosh +SMB client (DAVE) available from <ulink url="http://www.thursby.com"> +Thursby</ulink> creates for internal use, and also still hides +all files beginning with a dot. +</emphasis> +</para> +</listitem></varlistentry> +<varlistentry> +<indexterm significance="preferred"><primary>hide special files</primary></indexterm><term><anchor id="HIDESPECIALFILES"/>hide special files (S)</term><listitem> + <para>This parameter prevents clients from seeing + special files such as sockets, devices and fifo's in directory + listings. +</para> + +<para>Default: <emphasis><parameter>hide special files</parameter> = no +</emphasis> +</para> + +</listitem></varlistentry> +<varlistentry> +<indexterm significance="preferred"><primary>hide unreadable</primary></indexterm><term><anchor id="HIDEUNREADABLE"/>hide unreadable (S)</term><listitem> + <para>This parameter prevents clients from seeing the + existance of files that cannot be read. Defaults to off.</para> + +<para>Default: <emphasis><parameter>hide unreadable</parameter> = no +</emphasis> +</para> + +</listitem></varlistentry> +<varlistentry> +<indexterm significance="preferred"><primary>hide unwriteable files</primary></indexterm><term><anchor id="HIDEUNWRITEABLEFILES"/>hide unwriteable files (S)</term><listitem> + <para>This parameter prevents clients from seeing + the existance of files that cannot be written to. Defaults to off. + Note that unwriteable directories are shown as usual. +</para> + +<para>Default: <emphasis><parameter>hide unwriteable files</parameter> = no +</emphasis> +</para> + +</listitem></varlistentry> +<varlistentry> +<indexterm significance="preferred"><primary>homedir map</primary></indexterm><term><anchor id="HOMEDIRMAP"/>homedir map (G)</term><listitem> + <para>If<link linkend="NISHOMEDIR"><parameter moreinfo="none">nis homedir + </parameter></link> is <constant>yes</constant>, and <citerefentry><refentrytitle>smbd</refentrytitle> + <manvolnum>8</manvolnum></citerefentry> is also acting + as a Win95/98 <parameter moreinfo="none">logon server</parameter> then this parameter + specifies the NIS (or YP) map from which the server for the user's + home directory should be extracted. At present, only the Sun + auto.home map format is understood. The form of the map is:</para> + + <para><command moreinfo="none">username server:/some/file/system</command></para> + + <para>and the program will extract the servername from before + the first ':'. There should probably be a better parsing system + that copes with different map formats and also Amd (another + automounter) maps.</para> + + <note><para>A working NIS client is required on + the system for this option to work.</para></note> + +<para>Default: <emphasis><parameter>homedir map</parameter> = +</emphasis> +</para> +<para>Example: <emphasis><parameter>homedir map</parameter> = amd.homedir +</emphasis> +</para> +</listitem></varlistentry> +<varlistentry> +<indexterm significance="preferred"><primary>host msdfs</primary></indexterm><term><anchor id="HOSTMSDFS"/>host msdfs (G)</term><listitem> + <para>If set to <constant>yes</constant>, Samba will act as a Dfs + server, and allow Dfs-aware clients to browse Dfs trees hosted + on the server.</para> + + <para>See also the <link linkend="MSDFSROOT"><parameter moreinfo="none"> + msdfs root</parameter></link> share level parameter. For + more information on setting up a Dfs tree on Samba, + refer to <link linkend="msdfs"/>. + </para> + +<para>Default: <emphasis><parameter>host msdfs</parameter> = no +</emphasis> +</para> + +</listitem></varlistentry> +<varlistentry> +<indexterm significance="preferred"><primary>hostname lookups</primary></indexterm><term><anchor id="HOSTNAMELOOKUPS"/>hostname lookups (G)</term><listitem> + <para>Specifies whether samba should use (expensive) + hostname lookups or use the ip addresses instead. An example place + where hostname lookups are currently used is when checking + the <command moreinfo="none">hosts deny</command> and <command moreinfo="none">hosts allow</command>. + </para> + +<para>Default: <emphasis><parameter>hostname lookups</parameter> = no +</emphasis> +</para> +<para>Example: <emphasis><parameter>hostname lookups</parameter> = yes +</emphasis> +</para> +</listitem></varlistentry> +<varlistentry> +<indexterm significance="preferred"><primary>allow hosts</primary><see>hosts allow</see></indexterm><term><anchor id="ALLOWHOSTS"/>allow hosts</term><listitem><para>This parameter is a synonym for hosts allow.</para></listitem></varlistentry><varlistentry> +<indexterm significance="preferred"><primary>hosts allow</primary></indexterm><term><anchor id="HOSTSALLOW"/>hosts allow (S)</term><listitem> + <para>A synonym for this parameter is <parameter moreinfo="none">allow + hosts</parameter>.</para> + + <para>This parameter is a comma, space, or tab delimited + set of hosts which are permitted to access a service.</para> + + <para>If specified in the [global] section then it will + apply to all services, regardless of whether the individual + service has a different setting.</para> + + <para>You can specify the hosts by name or IP number. For + example, you could restrict access to only the hosts on a + Class C subnet with something like <command moreinfo="none">allow hosts = 150.203.5. + </command>. The full syntax of the list is described in the man + page <filename moreinfo="none">hosts_access(5)</filename>. Note that this man + page may not be present on your system, so a brief description will + be given here also.</para> + + <para>Note that the localhost address 127.0.0.1 will always + be allowed access unless specifically denied by a <link linkend="HOSTSDENY"> + <parameter moreinfo="none">hosts deny</parameter></link> option.</para> + + <para>You can also specify hosts by network/netmask pairs and + by netgroup names if your system supports netgroups. The + <emphasis>EXCEPT</emphasis> keyword can also be used to limit a + wildcard list. The following examples may provide some help:</para> + +<para>Example 1: allow all IPs in 150.203.*.*; except one</para> + + <para><command moreinfo="none">hosts allow = 150.203. EXCEPT 150.203.6.66</command></para> + + <para>Example 2: allow hosts that match the given network/netmask</para> + + <para><command moreinfo="none">hosts allow = 150.203.15.0/255.255.255.0</command></para> + + <para>Example 3: allow a couple of hosts</para> + + <para><command moreinfo="none">hosts allow = lapland, arvidsjaur</command></para> + + <para>Example 4: allow only hosts in NIS netgroup "foonet", but + deny access from one particular host</para> + + <para><command moreinfo="none">hosts allow = @foonet</command></para> + + <para><command moreinfo="none">hosts deny = pirate</command></para> + + <note><para>Note that access still requires suitable user-level passwords.</para></note> + + <para>See <citerefentry><refentrytitle>testparm</refentrytitle> + <manvolnum>1</manvolnum></citerefentry> for a way of testing your host access + to see if it does what you expect.</para> + + + +<para>Default: <emphasis><parameter>hosts allow</parameter> = +# none (i.e., all hosts permitted access) +</emphasis> +</para> +<para>Example: <emphasis><parameter>hosts allow</parameter> = 150.203.5. myhost.mynet.edu.au +</emphasis> +</para> +</listitem></varlistentry> +<varlistentry> +<indexterm significance="preferred"><primary>deny hosts</primary><see>hosts deny</see></indexterm><term><anchor id="DENYHOSTS"/>deny hosts</term><listitem><para>This parameter is a synonym for hosts deny.</para></listitem></varlistentry><varlistentry> +<indexterm significance="preferred"><primary>hosts deny</primary></indexterm><term><anchor id="HOSTSDENY"/>hosts deny (S)</term><listitem> + <para>The opposite of <parameter moreinfo="none">hosts allow</parameter> + - hosts listed here are <emphasis>NOT</emphasis> permitted access to + services unless the specific services have their own lists to override + this one. Where the lists conflict, the <parameter moreinfo="none">allow</parameter> + list takes precedence.</para> + +<para>Default: <emphasis><parameter>hosts deny</parameter> = +# none (i.e., no hosts specifically excluded) +</emphasis> +</para> +<para>Example: <emphasis><parameter>hosts deny</parameter> = 150.203.4. badhost.mynet.edu.au +</emphasis> +</para> +</listitem></varlistentry> +<varlistentry> +<indexterm significance="preferred"><primary>hosts equiv</primary></indexterm><term><anchor id="HOSTSEQUIV"/>hosts equiv (G)</term><listitem> + <para>If this global parameter is a non-null string, + it specifies the name of a file to read for the names of hosts + and users who will be allowed access without specifying a password. + </para> + + <para>This is not be confused with <link linkend="HOSTSALLOW"> + <parameter moreinfo="none">hosts allow</parameter></link> which is about hosts + access to services and is more useful for guest services. <parameter moreinfo="none"> + hosts equiv</parameter> may be useful for NT clients which will + not supply passwords to Samba.</para> + + <note><para>The use of <parameter moreinfo="none">hosts equiv + </parameter> can be a major security hole. This is because you are + trusting the PC to supply the correct username. It is very easy to + get a PC to supply a false username. I recommend that the + <parameter moreinfo="none">hosts equiv</parameter> option be only used if you really + know what you are doing, or perhaps on a home network where you trust + your spouse and kids. And only if you <emphasis>really</emphasis> trust + them :-).</para></note> + +<para>Default: <emphasis><parameter>hosts equiv</parameter> = +# no host equivalences +</emphasis> +</para> +<para>Example: <emphasis><parameter>hosts equiv</parameter> = hosts equiv = /etc/hosts.equiv +</emphasis> +</para> +</listitem></varlistentry> +<varlistentry> +<indexterm significance="preferred"><primary>idmap backend</primary></indexterm><term><anchor id="IDMAPBACKEND"/>idmap backend (G)</term><listitem> + <para> + The purpose of the idmap backend parameter is to allow idmap to NOT use the local idmap + tdb file to obtain SID to UID / GID mappings, but instead to obtain them from a common + LDAP backend. This way all domain members and controllers will have the same UID and GID + to SID mappings. This avoids the risk of UID / GID inconsistencies across UNIX / Linux + systems that are sharing information over protocols other than SMB/CIFS (ie: NFS). + </para> + + <para> + An alternate method of SID to UID / GID mapping can be achieved using the idmap_rid + plug-in. This plug-in uses the account RID to derive the UID and GID by adding the + RID to a base value specified. This utility requires that the parameter + <quote><emphasis>allow trusted domains = No</emphasis></quote> must be specified, as it is not compatible + with multiple domain environments. The idmap uid and idmap gid ranges must also be + specified. + </para> + +<para>Default: <emphasis><parameter>idmap backend</parameter> = +</emphasis> +</para> +<para>Example: <emphasis><parameter>idmap backend</parameter> = ldap:ldap://ldapslave.example.com +</emphasis> +</para><para>Example: <emphasis><parameter>idmap backend</parameter> = idmap_rid:DOMNAME=1000-100000000 +</emphasis> +</para> +</listitem></varlistentry> +<varlistentry> +<indexterm significance="preferred"><primary>winbind gid</primary><see>idmap gid</see></indexterm><term><anchor id="WINBINDGID"/>winbind gid</term><listitem><para>This parameter is a synonym for idmap gid.</para></listitem></varlistentry><varlistentry> +<indexterm significance="preferred"><primary>idmap gid</primary></indexterm><term><anchor id="IDMAPGID"/>idmap gid (G)</term><listitem> + + <para>The idmap gid parameter specifies the range of group ids that are allocated for + the purpose of mapping UNX groups to NT group SIDs. This range of group ids should have no + existing local or NIS groups within it as strange conflicts can occur otherwise.</para> + + <para>The availability of an idmap gid range is essential for correct operation of + all group mapping.</para> + +<para>Default: <emphasis><parameter>idmap gid</parameter> = +</emphasis> +</para> +<para>Example: <emphasis><parameter>idmap gid</parameter> = 10000-20000 +</emphasis> +</para> +</listitem></varlistentry> +<varlistentry> +<indexterm significance="preferred"><primary>winbind uid</primary><see>idmap uid</see></indexterm><term><anchor id="WINBINDUID"/>winbind uid</term><listitem><para>This parameter is a synonym for idmap uid.</para></listitem></varlistentry><varlistentry> +<indexterm significance="preferred"><primary>idmap uid</primary></indexterm><term><anchor id="IDMAPUID"/>idmap uid (G)</term><listitem> + <para>The idmap uid parameter specifies the range of user ids that are allocated for use + in mapping UNIX users to NT user SIDs. This range of ids should have no existing local + or NIS users within it as strange conflicts can occur otherwise.</para> + +<para>Default: <emphasis><parameter>idmap uid</parameter> = +</emphasis> +</para> +<para>Example: <emphasis><parameter>idmap uid</parameter> = 10000-20000 +</emphasis> +</para> +</listitem></varlistentry> +<varlistentry> +<indexterm significance="preferred"><primary>include</primary></indexterm><term><anchor id="INCLUDE"/>include (G)</term><listitem> + <para>This allows you to include one config file + inside another. The file is included literally, as though typed + in place.</para> + + <para>It takes the standard substitutions, except <parameter moreinfo="none">%u + </parameter>, <parameter moreinfo="none">%P</parameter> and <parameter moreinfo="none">%S</parameter>. +</para> + +<para>Default: <emphasis><parameter>include</parameter> = +</emphasis> +</para> +<para>Example: <emphasis><parameter>include</parameter> = /usr/local/samba/lib/admin_smb.conf +</emphasis> +</para> +</listitem></varlistentry> +<varlistentry> +<indexterm significance="preferred"><primary>inherit acls</primary></indexterm><term><anchor id="INHERITACLS"/>inherit acls (S)</term><listitem> + <para>This parameter can be used to ensure that if default acls + exist on parent directories, they are always honored when creating a + subdirectory. The default behavior is to use the mode specified when + creating the directory. Enabling this option sets the mode to 0777, + thus guaranteeing that default directory acls are propagated. +</para> + +<para>Default: <emphasis><parameter>inherit acls</parameter> = no +</emphasis> +</para> + +</listitem></varlistentry> +<varlistentry> +<indexterm significance="preferred"><primary>inherit owner</primary></indexterm><term><anchor id="INHERITOWNER"/>inherit owner (S)</term><listitem> + <para>The ownership of new files and directories + is normally governed by effective uid of the connected user. + This option allows the Samba administrator to specify that + the ownership for new files and directories should be controlled + by the ownership of the parent directory.</para> - <refsect2> - <title>The [global] section</title> - - <para>Parameters in this section apply to the server - as a whole, or are defaults for sections that do not - specifically define certain items. See the notes - under PARAMETERS for more information.</para> - </refsect2> + <para>Common scenarios where this behavior is useful is in + implementing drop-boxes where users can create and edit files but not + delete them and to ensure that newly create files in a user's + roaming profile directory are actually owner by the user.</para> + +<para>Default: <emphasis><parameter>inherit owner</parameter> = no +</emphasis> +</para> + +</listitem></varlistentry> +<varlistentry> +<indexterm significance="preferred"><primary>inherit permissions</primary></indexterm><term><anchor id="INHERITPERMISSIONS"/>inherit permissions (S)</term><listitem> + <para>The permissions on new files and directories + are normally governed by <link linkend="CREATEMASK"><parameter moreinfo="none"> + create mask</parameter></link>, <link linkend="DIRECTORYMASK"> + <parameter moreinfo="none">directory mask</parameter></link>, <link linkend="FORCECREATEMODE"> + <parameter moreinfo="none">force create mode</parameter> + </link> and <link linkend="FORCEDIRECTORYMODE"><parameter moreinfo="none">force + directory mode</parameter></link> but the boolean inherit + permissions parameter overrides this.</para> + + <para>New directories inherit the mode of the parent directory, + including bits such as setgid.</para> + + <para>New files inherit their read/write bits from the parent + directory. Their execute bits continue to be determined by + <link linkend="MAPARCHIVE"><parameter moreinfo="none">map archive</parameter> + </link>, <link linkend="MAPHIDDEN"><parameter moreinfo="none">map hidden</parameter> + </link> and <link linkend="MAPSYSTEM"><parameter moreinfo="none">map system</parameter> + </link> as usual.</para> + + <para>Note that the setuid bit is <emphasis>never</emphasis> set via + inheritance (the code explicitly prohibits this).</para> + + <para>This can be particularly useful on large systems with + many users, perhaps several thousand, to allow a single [homes] + share to be used flexibly by each user.</para> + +<para>Default: <emphasis><parameter>inherit permissions</parameter> = no +</emphasis> +</para> + +</listitem></varlistentry> +<varlistentry> +<indexterm significance="preferred"><primary>interfaces</primary></indexterm><term><anchor id="INTERFACES"/>interfaces (G)</term><listitem> + <para>This option allows you to override the default + network interfaces list that Samba will use for browsing, name + registration and other NBT traffic. By default Samba will query + the kernel for the list of all active interfaces and use any + interfaces except 127.0.0.1 that are broadcast capable.</para> + + <para>The option takes a list of interface strings. Each string + can be in any of the following forms:</para> + + <itemizedlist> + <listitem><para>a network interface name (such as eth0). + This may include shell-like wildcards so eth* will match + any interface starting with the substring "eth"</para></listitem> + + <listitem><para>an IP address. In this case the netmask is + determined from the list of interfaces obtained from the + kernel</para></listitem> + + <listitem><para>an IP/mask pair. </para></listitem> + + <listitem><para>a broadcast/mask pair.</para></listitem> + </itemizedlist> + + <para>The "mask" parameters can either be a bit length (such + as 24 for a C class network) or a full netmask in dotted + decimal form.</para> + + <para>The "IP" parameters above can either be a full dotted + decimal IP address or a hostname which will be looked up via + the OS's normal hostname resolution mechanisms.</para> + + +<para>Default: <emphasis><parameter>interfaces</parameter> = +# all active interfaces except 127.0.0.1 that are broadcast capable +</emphasis> +</para> +<para>Example: <emphasis><parameter>interfaces</parameter> = - <refsect2 id="HOMESECT"> - <title>The [homes] section</title> - - <para>If a section called [homes] is included in the - configuration file, services connecting clients to their - home directories can be created on the fly by the server.</para> - - <para>When the connection request is made, the existing - sections are scanned. If a match is found, it is used. If no - match is found, the requested section name is treated as a - username and looked up in the local password file. If the - name exists and the correct password has been given, a share is - created by cloning the [homes] section.</para> - - <para>Some modifications are then made to the newly - created share:</para> - - <itemizedlist> - <listitem><para>The share name is changed from homes to - the located username.</para></listitem> - - <listitem><para>If no path was given, the path is set to - the user's home directory.</para></listitem> - </itemizedlist> - - <para>If you decide to use a <emphasis>path =</emphasis> line - in your [homes] section, you may find it useful - to use the %S macro. For example :</para> - - <para><userinput moreinfo="none">path = /data/pchome/%S</userinput></para> - - <para>is useful if you have different home directories - for your PCs than for UNIX access.</para> - - <para>This is a fast and simple way to give a large number - of clients access to their home directories with a minimum - of fuss.</para> - - <para>A similar process occurs if the requested section - name is <quote>homes</quote>, except that the share name is not - changed to that of the requesting user. This method of using - the [homes] section works well if different users share - a client PC.</para> - - <para>The [homes] section can specify all the parameters - a normal service section can specify, though some make more sense - than others. The following is a typical and suitable [homes] - section:</para> - - <smbconfexample> - <smbconfsection name="[homes]"/> - <smbconfoption name="read only">no</smbconfoption> - </smbconfexample> +# This would configure three network interfaces corresponding + to the eth0 device and IP addresses 192.168.2.10 and 192.168.3.10. + The netmasks of the latter two interfaces would be set to 255.255.255.0. + eth0 192.168.2.10/24 192.168.3.10/255.255.255.0 + +</emphasis> +</para> +</listitem></varlistentry> +<varlistentry> +<indexterm significance="preferred"><primary>invalid users</primary></indexterm><term><anchor id="INVALIDUSERS"/>invalid users (S)</term><listitem> + <para>This is a list of users that should not be allowed + to login to this service. This is really a <emphasis>paranoid</emphasis> + check to absolutely ensure an improper setting does not breach + your security.</para> + + <para>A name starting with a '@' is interpreted as an NIS + netgroup first (if your system supports NIS), and then as a UNIX + group if the name was not found in the NIS netgroup database.</para> + + <para>A name starting with '+' is interpreted only + by looking in the UNIX group database. A name starting with + '&' is interpreted only by looking in the NIS netgroup database + (this requires NIS to be working on your system). The characters + '+' and '&' may be used at the start of the name in either order + so the value <parameter moreinfo="none">+&group</parameter> means check the + UNIX group database, followed by the NIS netgroup database, and + the value <parameter moreinfo="none">&+group</parameter> means check the NIS + netgroup database, followed by the UNIX group database (the + same as the '@' prefix).</para> + + <para>The current servicename is substituted for <parameter moreinfo="none">%S</parameter>. + This is useful in the [homes] section.</para> + +<para>Default: <emphasis><parameter>invalid users</parameter> = +# no invalid users +</emphasis> +</para> +<para>Example: <emphasis><parameter>invalid users</parameter> = root fred admin @wheel +</emphasis> +</para> +</listitem></varlistentry> +<varlistentry> +<indexterm significance="preferred"><primary>keepalive</primary></indexterm><term><anchor id="KEEPALIVE"/>keepalive (G)</term><listitem> + <para>The value of the parameter (an integer) represents + the number of seconds between <parameter moreinfo="none">keepalive</parameter> + packets. If this parameter is zero, no keepalive packets will be + sent. Keepalive packets, if sent, allow the server to tell whether + a client is still present and responding.</para> + + <para>Keepalives should, in general, not be needed if the socket + being used has the SO_KEEPALIVE attribute set on it (see <link linkend="SOCKETOPTIONS"> + <parameter moreinfo="none">socket options</parameter></link>). +Basically you should only use this option if you strike difficulties.</para> + +<para>Default: <emphasis><parameter>keepalive</parameter> = 300 +</emphasis> +</para> +<para>Example: <emphasis><parameter>keepalive</parameter> = 600 +</emphasis> +</para> +</listitem></varlistentry> +<varlistentry> +<indexterm significance="preferred"><primary>kernel change notify</primary></indexterm><term><anchor id="KERNELCHANGENOTIFY"/>kernel change notify (G)</term><listitem> + <para>This parameter specifies whether Samba should ask the + kernel for change notifications in directories so that + SMB clients can refresh whenever the data on the server changes. + </para> + + <para>This parameter is only used when your kernel supports + change notification to user programs, using the F_NOTIFY fcntl. + </para> + +<para>Default: <emphasis><parameter>kernel change notify</parameter> = yes +</emphasis> +</para> + +</listitem></varlistentry> +<varlistentry> +<indexterm significance="preferred"><primary>kernel oplocks</primary></indexterm><term><anchor id="KERNELOPLOCKS"/>kernel oplocks (G)</term><listitem> + <para>For UNIXes that support kernel based <link linkend="OPLOCKS"> + <parameter moreinfo="none">oplocks</parameter></link> + (currently only IRIX and the Linux 2.4 kernel), this parameter + allows the use of them to be turned on or off.</para> + + <para>Kernel oplocks support allows Samba <parameter moreinfo="none">oplocks + </parameter> to be broken whenever a local UNIX process or NFS operation + accesses a file that <citerefentry><refentrytitle>smbd</refentrytitle> + <manvolnum>8</manvolnum></citerefentry> has oplocked. This allows complete + data consistency between SMB/CIFS, NFS and local file access (and is + a <emphasis>very</emphasis> cool feature :-).</para> + + <para>This parameter defaults to <constant>on</constant>, but is translated + to a no-op on systems that no not have the necessary kernel support. + You should never need to touch this parameter.</para> + +<para>Default: <emphasis><parameter>kernel oplocks</parameter> = yes +</emphasis> +</para> + +</listitem></varlistentry> +<varlistentry> +<indexterm significance="preferred"><primary>lanman auth</primary></indexterm><term><anchor id="LANMANAUTH"/>lanman auth (G)</term><listitem> + <para>This parameter determines whether or not <citerefentry><refentrytitle>smbd</refentrytitle> + <manvolnum>8</manvolnum></citerefentry> will attempt to + authenticate users or permit password changes + using the LANMAN password hash. If disabled, only clients which support NT + password hashes (e.g. Windows NT/2000 clients, smbclient, but not + Windows 95/98 or the MS DOS network client) will be able to + connect to the Samba host.</para> + + <para>The LANMAN encrypted response is easily broken, due to it's + case-insensitive nature, and the choice of algorithm. Servers + without Windows 95/98/ME or MS DOS clients are advised to disable + this option. </para> + + <para>Unlike the <command moreinfo="none">encypt + passwords</command> option, this parameter cannot alter client + behaviour, and the LANMAN response will still be sent over the + network. See the <command moreinfo="none">client lanman + auth</command> to disable this for Samba's clients (such as smbclient)</para> + + <para>If this option, and <command moreinfo="none">ntlm + auth</command> are both disabled, then only NTLMv2 logins will be + permited. Not all clients support NTLMv2, and most will require + special configuration to use it.</para> + +<para>Default: <emphasis><parameter>lanman auth</parameter> = yes +</emphasis> +</para> + +</listitem></varlistentry> +<varlistentry> +<indexterm significance="preferred"><primary>large readwrite</primary></indexterm><term><anchor id="LARGEREADWRITE"/>large readwrite (G)</term><listitem> + <para>This parameter determines whether or not + <citerefentry><refentrytitle>smbd</refentrytitle> + <manvolnum>8</manvolnum></citerefentry> supports the new 64k + streaming read and write varient SMB requests introduced with + Windows 2000. Note that due to Windows 2000 client redirector bugs + this requires Samba to be running on a 64-bit capable operating + system such as IRIX, Solaris or a Linux 2.4 kernel. Can improve + performance by 10% with Windows 2000 clients. Defaults to on. Not as + tested as some other Samba code paths.</para> + +<para>Default: <emphasis><parameter>large readwrite</parameter> = yes +</emphasis> +</para> + +</listitem></varlistentry> +<varlistentry> +<indexterm significance="preferred"><primary>ldap admin dn</primary></indexterm><term><anchor id="LDAPADMINDN"/>ldap admin dn (G)</term><listitem> + <para> The <parameter moreinfo="none">ldap admin dn</parameter> + defines the Distinguished Name (DN) name used by Samba to + contact the ldap server when retreiving user account + information. The <parameter moreinfo="none">ldap admin + dn</parameter> is used in conjunction with the admin dn password + stored in the <filename moreinfo="none">private/secrets.tdb</filename> file. + See the <citerefentry><refentrytitle>smbpasswd</refentrytitle> + <manvolnum>8</manvolnum></citerefentry> man page for more + information on how to accmplish this.</para> + +<para><emphasis>No default</emphasis></para> + +</listitem></varlistentry> +<varlistentry> +<indexterm significance="preferred"><primary>ldap delete dn</primary></indexterm><term><anchor id="LDAPDELETEDN"/>ldap delete dn (G)</term><listitem> + <para> This parameter specifies whether a delete + operation in the ldapsam deletes the complete entry or only the attributes + specific to Samba. +</para> + +<para>Default: <emphasis><parameter>ldap delete dn</parameter> = no +</emphasis> +</para> + +</listitem></varlistentry> +<varlistentry> +<indexterm significance="preferred"><primary>ldap filter</primary></indexterm><term><anchor id="LDAPFILTER"/>ldap filter (G)</term><listitem> + <para>This parameter specifies the RFC 2254 compliant LDAP search filter. + The default is to match the login name with the <constant>uid</constant> + attribute. Note that this filter should only return one entry. +</para> + +<para>Default: <emphasis><parameter>ldap filter</parameter> = (uid=%u) +</emphasis> +</para> +<para>Example: <emphasis><parameter>ldap filter</parameter> = (&(uid=%u)(objectclass=sambaSamAccount)) +</emphasis> +</para> +</listitem></varlistentry> +<varlistentry> +<indexterm significance="preferred"><primary>ldap group suffix</primary></indexterm><term><anchor id="LDAPGROUPSUFFIX"/>ldap group suffix (G)</term><listitem> + <para>This parameters specifies the suffix that is + used for groups when these are added to the LDAP directory. + If this parameter is unset, the value of <parameter>ldap suffix</parameter> will be used instead.</para> + + +<para>Default: <emphasis><parameter>ldap group suffix</parameter> = +</emphasis> +</para> +<para>Example: <emphasis><parameter>ldap group suffix</parameter> = ou=Groups,dc=samba,ou=Groups +</emphasis> +</para> +</listitem></varlistentry> +<varlistentry> +<indexterm significance="preferred"><primary>ldap idmap suffix</primary></indexterm><term><anchor id="LDAPIDMAPSUFFIX"/>ldap idmap suffix (G)</term><listitem> + <para>This parameters specifies the suffix that is + used when storing idmap mappings. If this parameter + is unset, the value of <parameter>ldap suffix</parameter> + will be used instead.</para> + +<para>Default: <emphasis><parameter>ldap idmap suffix</parameter> = +</emphasis> +</para> +<para>Example: <emphasis><parameter>ldap idmap suffix</parameter> = ou=Idmap,dc=samba,dc=org +</emphasis> +</para> +</listitem></varlistentry> +<varlistentry> +<indexterm significance="preferred"><primary>ldap machine suffix</primary></indexterm><term><anchor id="LDAPMACHINESUFFIX"/>ldap machine suffix (G)</term><listitem> + <para>It specifies where machines should be added to the ldap tree.</para> + +<para>Default: <emphasis><parameter>ldap machine suffix</parameter> = +</emphasis> +</para> + +</listitem></varlistentry> +<varlistentry> +<indexterm significance="preferred"><primary>ldap passwd sync</primary></indexterm><term><anchor id="LDAPPASSWDSYNC"/>ldap passwd sync (G)</term><listitem> + <para>This option is used to define whether + or not Samba should sync the LDAP password with the NT + and LM hashes for normal accounts (NOT for + workstation, server or domain trusts) on a password + change via SAMBA. + </para> + + <para>The <parameter moreinfo="none">ldap passwd + sync</parameter> can be set to one of three values: </para> - <para>An important point is that if guest access is specified - in the [homes] section, all home directories will be - visible to all clients <emphasis>without a password</emphasis>. - In the very unlikely event that this is actually desirable, it - is wise to also specify <emphasis>read only access</emphasis>.</para> - - <para>The <emphasis>browseable</emphasis> flag for - auto home directories will be inherited from the global browseable - flag, not the [homes] browseable flag. This is useful as - it means setting <emphasis>browseable = no</emphasis> in - the [homes] section will hide the [homes] share but make - any auto home directories visible.</para> - </refsect2> - - <refsect2 id="PRINTERSSECT"> - <title>The [printers] section</title> - - <para>This section works like [homes], - but for printers.</para> - - <para>If a [printers] section occurs in the - configuration file, users are able to connect to any printer - specified in the local host's printcap file.</para> - - <para>When a connection request is made, the existing sections - are scanned. If a match is found, it is used. If no match is found, - but a [homes] section exists, it is used as described - above. Otherwise, the requested section name is treated as a - printer name and the appropriate printcap file is scanned to see - if the requested section name is a valid printer share name. If - a match is found, a new printer share is created by cloning - the [printers] section.</para> - - <para>A few modifications are then made to the newly created - share:</para> - - <itemizedlist> - <listitem><para>The share name is set to the located printer - name</para></listitem> - - <listitem><para>If no printer name was given, the printer name - is set to the located printer name</para></listitem> - - <listitem><para>If the share does not permit guest access and - no username was given, the username is set to the located - printer name.</para></listitem> - </itemizedlist> - - <para>The [printers] service MUST be - printable - if you specify otherwise, the server will refuse - to load the configuration file.</para> - - <para>Typically the path specified is that of a - world-writeable spool directory with the sticky bit set on - it. A typical [printers] entry looks like - this:</para> - - <smbconfexample> - <smbconfsection name="[printers]"/> - <smbconfoption name="path">/usr/spool/public</smbconfoption> - <smbconfoption name="guest ok">yes</smbconfoption> - <smbconfoption name="printable">yes</smbconfoption> - </smbconfexample> - - <para>All aliases given for a printer in the printcap file - are legitimate printer names as far as the server is concerned. - If your printing subsystem doesn't work like that, you will have - to set up a pseudo-printcap. This is a file consisting of one or - more lines like this:</para> - - <programlisting> -alias|alias|alias|alias... - </programlisting> - - <para>Each alias should be an acceptable printer name for - your printing subsystem. In the [global] section, specify - the new file as your printcap. The server will only recognize - names found in your pseudo-printcap, which of course can contain - whatever aliases you like. The same technique could be used - simply to limit access to a subset of your local printers.</para> - - <para>An alias, by the way, is defined as any component of the - first entry of a printcap record. Records are separated by newlines, - components (if there are more than one) are separated by vertical - bar symbols (<quote>|</quote>).</para> - - <note><para>On SYSV systems which use lpstat to determine what - printers are defined on the system you may be able to use - <quote>printcap name = lpstat</quote> to automatically obtain a list - of printers. See the <quote>printcap name</quote> option - for more details.</para></note> - </refsect2> -</refsect1> - -<refsect1> - <title>PARAMETERS</title> - - <para>Parameters define the specific attributes of sections.</para> - - <para>Some parameters are specific to the [global] section - (e.g., <emphasis>security</emphasis>). Some parameters are usable - in all sections (e.g., <emphasis>create mode</emphasis>). All others - are permissible only in normal sections. For the purposes of the - following descriptions the [homes] and [printers] - sections will be considered normal. The letter <emphasis>G</emphasis> - in parentheses indicates that a parameter is specific to the - [global] section. The letter <emphasis>S</emphasis> - indicates that a parameter can be specified in a service specific - section. All <emphasis>S</emphasis> parameters can also be specified in - the [global] section - in which case they will define - the default behavior for all services.</para> - - <para>Parameters are arranged here in alphabetical order - this may - not create best bedfellows, but at least you can find them! Where - there are synonyms, the preferred synonym is described, others refer - to the preferred synonym.</para> -</refsect1> - -<refsect1> - <title>VARIABLE SUBSTITUTIONS</title> - - <para>Many of the strings that are settable in the config file - can take substitutions. For example the option <quote>path = - /tmp/%u</quote> is interpreted as <quote>path = - /tmp/john</quote> if the user connected with the username john.</para> - - <para>These substitutions are mostly noted in the descriptions below, - but there are some general substitutions which apply whenever they - might be relevant. These are:</para> - - <variablelist> - <varlistentry> - <term>%U</term> - <listitem><para>session username (the username that the client - wanted, not necessarily the same as the one they got).</para></listitem> - </varlistentry> - - <varlistentry> - <term>%G</term> - <listitem><para>primary group name of %U.</para></listitem> - </varlistentry> - - <varlistentry> - <term>%h</term> - <listitem><para>the Internet hostname that Samba is running - on.</para></listitem> - </varlistentry> - - <varlistentry> - <term>%m</term> - <listitem><para>the NetBIOS name of the client machine - (very useful).</para></listitem> - </varlistentry> - - <varlistentry> - <term>%L</term> - <listitem><para>the NetBIOS name of the server. This allows you - to change your config based on what the client calls you. Your - server can have a <quote>dual personality</quote>.</para> - - <para>This parameter is not available when Samba listens - on port 445, as clients no longer send this information.</para> - </listitem> - - </varlistentry> - - <varlistentry> - <term>%M</term> - <listitem><para>the Internet name of the client machine. - </para></listitem> - </varlistentry> - - <varlistentry> - <term>%R</term> - <listitem><para>the selected protocol level after - protocol negotiation. It can be one of CORE, COREPLUS, - LANMAN1, LANMAN2 or NT1.</para></listitem> - </varlistentry> - - <varlistentry> - <term>%d</term> - <listitem><para>the process id of the current server - process.</para></listitem> - </varlistentry> - - <varlistentry> - <term>%a</term> - <listitem><para>the architecture of the remote - machine. It currently recognizes Samba (<constant>Samba</constant>), - the Linux CIFS file system (<constant>CIFSFS</constant>), OS/2, (<constant>OS2</constant>), - Windows for Workgroups (<constant>WfWg</constant>), Windows 9x/ME - (<constant>Win95</constant>), Windows NT (<constant>WinNT</constant>), - Windows 2000 (<constant>Win2K</constant>), Windows XP (<constant>WinXP</constant>), - and Windows 2003 (<constant>Win2K3</constant>). Anything else will be known as - <constant>UNKNOWN</constant>.</para> + <itemizedlist> + <listitem> + <para><parameter moreinfo="none">Yes</parameter> = Try + to update the LDAP, NT and LM passwords and update the pwdLastSet time.</para> + </listitem> + + <listitem> + <para><parameter moreinfo="none">No</parameter> = Update NT and + LM passwords and update the pwdLastSet time.</para> + </listitem> + + <listitem> + <para><parameter moreinfo="none">Only</parameter> = Only update + the LDAP password and let the LDAP server do the rest.</para> </listitem> - </varlistentry> + </itemizedlist> + +<para>Default: <emphasis><parameter>ldap passwd sync</parameter> = no +</emphasis> +</para> + +</listitem></varlistentry> +<varlistentry> +<indexterm significance="preferred"><primary>ldap port</primary></indexterm><term><anchor id="LDAPPORT"/>ldap port (G)</term><listitem> + <para>This parameter is only available if Samba has been + configure to include the <command moreinfo="none">--with-ldapsam</command> option + at compile time.</para> + + <para>This option is used to control the tcp port number used to contact + the <link linkend="LDAPSERVER"><parameter moreinfo="none">ldap server</parameter></link>. + The default is to use the stand LDAPS port 636.</para> + +<para>Default: <emphasis><parameter>ldap port</parameter> = 636 +# if ldap ssl = on +</emphasis> +</para><para>Default: <emphasis><parameter>ldap port</parameter> = 389 +# if ldap ssl = off +</emphasis> +</para> + +</listitem></varlistentry> +<varlistentry> +<indexterm significance="preferred"><primary>ldap replication sleep</primary></indexterm><term><anchor id="LDAPREPLICATIONSLEEP"/>ldap replication sleep (G)</term><listitem> + <para>When Samba is asked to write to a read-only LDAP +replica, we are redirected to talk to the read-write master server. +This server then replicates our changes back to the 'local' server, +however the replication might take some seconds, especially over slow +links. Certain client activities, particularly domain joins, can become +confused by the 'success' that does not immediately change the LDAP +back-end's data. </para> + <para>This option simply causes Samba to wait a short time, to +allow the LDAP server to catch up. If you have a particularly +high-latency network, you may wish to time the LDAP replication with a +network sniffer, and increase this value accordingly. Be aware that no +checking is performed that the data has actually replicated.</para> + <para>The value is specified in milliseconds, the maximum +value is 5000 (5 seconds).</para> + +<para>Default: <emphasis><parameter>ldap replication sleep</parameter> = 1000 +</emphasis> +</para> + +</listitem></varlistentry> +<varlistentry> +<indexterm significance="preferred"><primary>ldapsam:trusted</primary></indexterm><term><anchor id="LDAPSAM:TRUSTED"/>ldapsam:trusted (G)</term><listitem> + +<para> +By default, Samba as a Domain Controller with an LDAP backend needs to use the +Unix-style NSS subsystem to access user and group information. Due to the way +Unix stores user information in /etc/passwd and /etc/group this inevitably +leads to inefficiencies. One important question a user needs to know is the +list of groups he is member of. The plain Unix model involves a complete +enumeration of the file /etc/group and its NSS counterparts in LDAP. In this +particular case there often optimized functions are available in Unix, but for +other queries there is no optimized function available.</para> + +<para>To make Samba scale well in large environments, the ldapsam:trusted=yes +option assumes that the complete user and group database that is relevant to +Samba is stored in LDAP with the standard posixAccount/posixGroup model, and +that the Samba auxiliary object classes are stored together with the the posix +data in the same LDAP object. If these assumptions are met, +ldapsam:trusted=yes can be activated and Samba can completely bypass the NSS +system to query user information. Optimized LDAP queries can speed up domain +logon and administration tasks a lot. Depending on the size of the LDAP +database a factor of 100 or more for common queries is easily achieved.</para> + + +<para>Default: <emphasis><parameter>ldapsam:trusted</parameter> = no +</emphasis> +</para> + +</listitem></varlistentry> +<varlistentry> +<indexterm significance="preferred"><primary>ldap server</primary></indexterm><term><anchor id="LDAPSERVER"/>ldap server (G)</term><listitem> + <para>This parameter is only available if Samba has been + configure to include the <command moreinfo="none">--with-ldapsam</command> + option at compile time.</para> + + <para>This parameter should contain the FQDN of the ldap directory + server which should be queried to locate user account information. +</para> + +<para>Default: <emphasis><parameter>ldap server</parameter> = localhost +</emphasis> +</para> + +</listitem></varlistentry> +<varlistentry> +<indexterm significance="preferred"><primary>ldap ssl</primary></indexterm><term><anchor id="LDAPSSL"/>ldap ssl (G)</term><listitem> + <para>This option is used to define whether or not Samba should + use SSL when connecting to the ldap server + This is <emphasis>NOT</emphasis> related to + Samba's previous SSL support which was enabled by specifying the + <command moreinfo="none">--with-ssl</command> option to the <filename moreinfo="none">configure</filename> + script.</para> - <varlistentry> - <term>%I</term> - <listitem><para>the IP address of the client machine.</para> + <para>The <parameter moreinfo="none">ldap ssl</parameter> can be set to one of three values:</para> + <itemizedlist> + <listitem> + <para><parameter moreinfo="none">Off</parameter> = Never + use SSL when querying the directory.</para> </listitem> - </varlistentry> - <varlistentry> - <term>%i</term> - <listitem><para>the local IP address to which a client connected.</para> + <listitem> + <para><parameter moreinfo="none">Start_tls</parameter> = Use + the LDAPv3 StartTLS extended operation (RFC2830) for + communicating with the directory server.</para> </listitem> - </varlistentry> - - <varlistentry> - <term>%T</term> - <listitem><para>the current date and time.</para></listitem> - </varlistentry> - - <varlistentry> - <term>%D</term> - <listitem><para>name of the domain or workgroup of the current user.</para></listitem> - </varlistentry> - - <varlistentry> - <term>%$(<replaceable>envvar</replaceable>)</term> - <listitem><para>the value of the environment variable - <replaceable>envar</replaceable>.</para></listitem> - </varlistentry> - </variablelist> - - <para>The following substitutes apply only to some configuration options (only those - that are used when a connection has been established):</para> - - <variablelist> - <varlistentry> - <term>%S</term> - <listitem><para>the name of the current service, if any.</para> + + <listitem> + <para><parameter moreinfo="none">On</parameter> = Use SSL + on the ldaps port when contacting the <parameter moreinfo="none">ldap server</parameter>. Only available when the + backwards-compatiblity <command moreinfo="none">--with-ldapsam</command> option is specified + to configure. See <link linkend="PASSDBBACKEND"><parameter moreinfo="none">passdb backend</parameter></link></para> </listitem> - </varlistentry> - - <varlistentry> - <term>%P</term> - <listitem><para>the root directory of the current service, - if any.</para></listitem> - </varlistentry> - - <varlistentry> - <term>%u</term> - <listitem><para>username of the current service, if any.</para> + </itemizedlist> + +<para>Default: <emphasis><parameter>ldap ssl</parameter> = start_tls +</emphasis> +</para> + +</listitem></varlistentry> +<varlistentry> +<indexterm significance="preferred"><primary>ldap suffix</primary></indexterm><term><anchor id="LDAPSUFFIX"/>ldap suffix (G)</term><listitem> + <para>Specifies where user and machine accounts are added to the + tree. Can be overriden by <command moreinfo="none">ldap user + suffix</command> and <command moreinfo="none">ldap machine + suffix</command>. It also used as the base dn for all ldap +searches. </para> + +<para>Default: <emphasis><parameter>ldap suffix</parameter> = +</emphasis> +</para> + +</listitem></varlistentry> +<varlistentry> +<indexterm significance="preferred"><primary>ldap timeout</primary></indexterm><term><anchor id="LDAPTIMEOUT"/>ldap timeout (G)</term><listitem> + <para>When Samba connects to an ldap server that server +may be down or unreachable. To prevent Samba from hanging whilst +waiting for the connection this parameter specifies in seconds how +long Samba should wait before failing the connect. The default is +to only wait fifteen seconds for the ldap server to respond to the +connect request.</para> + +<para>Default: <emphasis><parameter>ldap timeout</parameter> = 15 +</emphasis> +</para> + +</listitem></varlistentry> +<varlistentry> +<indexterm significance="preferred"><primary>ldap user suffix</primary></indexterm><term><anchor id="LDAPUSERSUFFIX"/>ldap user suffix (G)</term><listitem> + <para>This parameter specifies where users are added to the tree. + If this parameter is not specified, the value from <command>ldap suffix</command>.</para> + + +<para>Default: <emphasis><parameter>ldap user suffix</parameter> = +</emphasis> +</para> + +</listitem></varlistentry> +<varlistentry> +<indexterm significance="preferred"><primary>level2 oplocks</primary></indexterm><term><anchor id="LEVEL2OPLOCKS"/>level2 oplocks (S)</term><listitem> + <para>This parameter controls whether Samba supports + level2 (read-only) oplocks on a share.</para> + + <para>Level2, or read-only oplocks allow Windows NT clients + that have an oplock on a file to downgrade from a read-write oplock + to a read-only oplock once a second client opens the file (instead + of releasing all oplocks on a second open, as in traditional, + exclusive oplocks). This allows all openers of the file that + support level2 oplocks to cache the file for read-ahead only (ie. + they may not cache writes or lock requests) and increases performance + for many accesses of files that are not commonly written (such as + application .EXE files).</para> + + <para>Once one of the clients which have a read-only oplock + writes to the file all clients are notified (no reply is needed + or waited for) and told to break their oplocks to "none" and + delete any read-ahead caches.</para> + + <para>It is recommended that this parameter be turned on to + speed access to shared executables.</para> + + <para>For more discussions on level2 oplocks see the CIFS spec.</para> + + <para>Currently, if <link linkend="KERNELOPLOCKS"><parameter moreinfo="none">kernel + oplocks</parameter></link> are supported then level2 oplocks are + not granted (even if this parameter is set to <constant>yes</constant>). + Note also, the <link linkend="OPLOCKS"><parameter moreinfo="none">oplocks</parameter> + </link> parameter must be set to <constant>yes</constant> on this share in order for + this parameter to have any effect.</para> + +<para>Default: <emphasis><parameter>level2 oplocks</parameter> = yes +</emphasis> +</para> + +</listitem></varlistentry> +<varlistentry> +<indexterm significance="preferred"><primary>lm announce</primary></indexterm><term><anchor id="LMANNOUNCE"/>lm announce (G)</term><listitem> + <para>This parameter determines if <citerefentry><refentrytitle>nmbd</refentrytitle> + <manvolnum>8</manvolnum></citerefentry> will produce Lanman announce + broadcasts that are needed by OS/2 clients in order for them to see + the Samba server in their browse list. This parameter can have three + values, <constant>yes</constant>, <constant>no</constant>, or + <constant>auto</constant>. The default is <constant>auto</constant>. + If set to <constant>no</constant> Samba will never produce these + broadcasts. If set to <constant>yes</constant> Samba will produce + Lanman announce broadcasts at a frequency set by the parameter + <parameter moreinfo="none">lm interval</parameter>. If set to <constant>auto</constant> + Samba will not send Lanman announce broadcasts by default but will + listen for them. If it hears such a broadcast on the wire it will + then start sending them at a frequency set by the parameter + <parameter moreinfo="none">lm interval</parameter>.</para> + +<para>Default: <emphasis><parameter>lm announce</parameter> = auto +</emphasis> +</para> +<para>Example: <emphasis><parameter>lm announce</parameter> = yes +</emphasis> +</para> +</listitem></varlistentry> +<varlistentry> +<indexterm significance="preferred"><primary>lm interval</primary></indexterm><term><anchor id="LMINTERVAL"/>lm interval (G)</term><listitem> + <para>If Samba is set to produce Lanman announce + broadcasts needed by OS/2 clients (see the <link linkend="LMANNOUNCE"> + <parameter moreinfo="none">lm announce</parameter></link> parameter) then this + parameter defines the frequency in seconds with which they will be + made. If this is set to zero then no Lanman announcements will be + made despite the setting of the <parameter moreinfo="none">lm announce</parameter> + parameter.</para> + +<para>Default: <emphasis><parameter>lm interval</parameter> = 60 +</emphasis> +</para> +<para>Example: <emphasis><parameter>lm interval</parameter> = 120 +</emphasis> +</para> +</listitem></varlistentry> +<varlistentry> +<indexterm significance="preferred"><primary>load printers</primary></indexterm><term><anchor id="LOADPRINTERS"/>load printers (G)</term><listitem> + <para>A boolean variable that controls whether all + printers in the printcap will be loaded for browsing by default. + See the <link linkend="PRINTERSSECT">printers</link> section for + more details.</para> + +<para>Default: <emphasis><parameter>load printers</parameter> = yes +</emphasis> +</para> + +</listitem></varlistentry> +<varlistentry> +<indexterm significance="preferred"><primary>local master</primary></indexterm><term><anchor id="LOCALMASTER"/>local master (G)</term><listitem> + <para>This option allows <citerefentry><refentrytitle>nmbd</refentrytitle> + <manvolnum>8</manvolnum></citerefentry> to try and become a local master browser + on a subnet. If set to <constant>no</constant> then <command moreinfo="none"> + nmbd</command> will not attempt to become a local master browser + on a subnet and will also lose in all browsing elections. By + default this value is set to <constant>yes</constant>. Setting this value to + <constant>yes</constant> doesn't mean that Samba will <emphasis>become</emphasis> the + local master browser on a subnet, just that <command moreinfo="none">nmbd</command> + will <emphasis>participate</emphasis> in elections for local master browser.</para> + + <para>Setting this value to <constant>no</constant> will cause <command moreinfo="none">nmbd</command> <emphasis>never</emphasis> to become a local +master browser.</para> + +<para>Default: <emphasis><parameter>local master</parameter> = yes +</emphasis> +</para> + +</listitem></varlistentry> +<varlistentry> +<indexterm significance="preferred"><primary>lock dir</primary><see>lock directory</see></indexterm><term><anchor id="LOCKDIR"/>lock dir</term><listitem><para>This parameter is a synonym for lock directory.</para></listitem></varlistentry><varlistentry> +<indexterm significance="preferred"><primary>lock directory</primary></indexterm><term><anchor id="LOCKDIRECTORY"/>lock directory (G)</term><listitem> + <para>This option specifies the directory where lock + files will be placed. The lock files are used to implement the + <link linkend="MAXCONNECTIONS"><parameter moreinfo="none">max connections</parameter> +</link> option.</para> + +<para>Default: <emphasis><parameter>lock directory</parameter> = ${prefix}/var/locks +</emphasis> +</para> +<para>Example: <emphasis><parameter>lock directory</parameter> = /var/run/samba/locks +</emphasis> +</para> +</listitem></varlistentry> +<varlistentry> +<indexterm significance="preferred"><primary>locking</primary></indexterm><term><anchor id="LOCKING"/>locking (S)</term><listitem> + <para>This controls whether or not locking will be + performed by the server in response to lock requests from the + client.</para> + + <para>If <command moreinfo="none">locking = no</command>, all lock and unlock + requests will appear to succeed and all lock queries will report + that the file in question is available for locking.</para> + + <para>If <command moreinfo="none">locking = yes</command>, real locking will be performed + by the server.</para> + + <para>This option <emphasis>may</emphasis> be useful for read-only + filesystems which <emphasis>may</emphasis> not need locking (such as + CDROM drives), although setting this parameter of <constant>no</constant> + is not really recommended even in this case.</para> + + <para>Be careful about disabling locking either globally or in a + specific service, as lack of locking may result in data corruption. + You should never need to set this parameter.</para> + +<para><emphasis>No default</emphasis></para> + +</listitem></varlistentry> +<varlistentry> +<indexterm significance="preferred"><primary>lock spin count</primary></indexterm><term><anchor id="LOCKSPINCOUNT"/>lock spin count (G)</term><listitem> + <para>This parameter controls the number of times + that smbd should attempt to gain a byte range lock on the + behalf of a client request. Experiments have shown that + Windows 2k servers do not reply with a failure if the lock + could not be immediately granted, but try a few more times + in case the lock could later be acquired. This behavior + is used to support PC database formats such as MS Access + and FoxPro. +</para> + +<para>Default: <emphasis><parameter>lock spin count</parameter> = 3 +</emphasis> +</para> + +</listitem></varlistentry> +<varlistentry> +<indexterm significance="preferred"><primary>lock spin time</primary></indexterm><term><anchor id="LOCKSPINTIME"/>lock spin time (G)</term><listitem> + <para>The time in microseconds that smbd should + pause before attempting to gain a failed lock. See + <link linkend="LOCKSPINCOUNT"><parameter moreinfo="none">lock spin + count</parameter></link> for more details.</para> + +<para>Default: <emphasis><parameter>lock spin time</parameter> = 10 +</emphasis> +</para> + +</listitem></varlistentry> +<varlistentry> +<indexterm significance="preferred"><primary>log file</primary></indexterm><term><anchor id="LOGFILE"/>log file (G)</term><listitem> + <para>This option allows you to override the name + of the Samba log file (also known as the debug file).</para> + + <para>This option takes the standard substitutions, allowing + you to have separate log files for each user or machine.</para> + +<para><emphasis>No default</emphasis></para> +<para>Example: <emphasis><parameter>log file</parameter> = /usr/local/samba/var/log.%m +</emphasis> +</para> +</listitem></varlistentry> +<varlistentry> +<indexterm significance="preferred"><primary>debuglevel</primary><see>log level</see></indexterm><term><anchor id="DEBUGLEVEL"/>debuglevel</term><listitem><para>This parameter is a synonym for log level.</para></listitem></varlistentry><varlistentry> +<indexterm significance="preferred"><primary>log level</primary></indexterm><term><anchor id="LOGLEVEL"/>log level (G)</term><listitem> + <para>The value of the parameter (a astring) allows + the debug level (logging level) to be specified in the + <filename moreinfo="none">smb.conf</filename> file. This parameter has been + extended since the 2.2.x series, now it allow to specify the debug + level for multiple debug classes. This is to give greater + flexibility in the configuration of the system.</para> + + <para>The default will be the log level specified on + the command line or level zero if none was specified.</para> + + +<para><emphasis>No default</emphasis></para> +<para>Example: <emphasis><parameter>log level</parameter> = 3 passdb:5 auth:10 winbind:2 +</emphasis> +</para> +</listitem></varlistentry> +<varlistentry> +<indexterm significance="preferred"><primary>logon drive</primary></indexterm><term><anchor id="LOGONDRIVE"/>logon drive (G)</term><listitem> + <para>This parameter specifies the local path to + which the home directory will be connected (see <link linkend="LOGONHOME"> + <parameter moreinfo="none">logon home</parameter></link>) + and is only used by NT Workstations. </para> + + <para>Note that this option is only useful if Samba is set up as a + logon server.</para> + +<para>Default: <emphasis><parameter>logon drive</parameter> = z: +</emphasis> +</para> +<para>Example: <emphasis><parameter>logon drive</parameter> = h: +</emphasis> +</para> +</listitem></varlistentry> +<varlistentry> +<indexterm significance="preferred"><primary>logon home</primary></indexterm><term><anchor id="LOGONHOME"/>logon home (G)</term><listitem> + <para>This parameter specifies the home directory + location when a Win95/98 or NT Workstation logs into a Samba PDC. + It allows you to do </para> + + <para><prompt moreinfo="none">C:\></prompt> + <userinput moreinfo="none">NET USE H: /HOME</userinput> + </para> + + <para>from a command prompt, for example.</para> + + <para>This option takes the standard substitutions, allowing + you to have separate logon scripts for each user or machine.</para> + + <para>This parameter can be used with Win9X workstations to ensure + that roaming profiles are stored in a subdirectory of the user's + home directory. This is done in the following way:</para> + + <para><command moreinfo="none">logon home = \\%N\%U\profile</command></para> + + <para>This tells Samba to return the above string, with + substitutions made when a client requests the info, generally + in a NetUserGetInfo request. Win9X clients truncate the info to + \\server\share when a user does <command moreinfo="none">net use /home</command> + but use the whole string when dealing with profiles.</para> + + <para>Note that in prior versions of Samba, the <link linkend="LOGONPATH"> + <parameter moreinfo="none">logon path</parameter></link> was returned rather than + <parameter moreinfo="none">logon home</parameter>. This broke <command moreinfo="none">net use /home</command> but allowed profiles outside the home directory. + The current implementation is correct, and can be used for profiles if you use + the above trick.</para> + + <para>This option is only useful if Samba is set up as a logon + server.</para> + +<para>Default: <emphasis><parameter>logon home</parameter> = \\%N\%U +</emphasis> +</para> +<para>Example: <emphasis><parameter>logon home</parameter> = \\remote_smb_server\%U +</emphasis> +</para> +</listitem></varlistentry> +<varlistentry> +<indexterm significance="preferred"><primary>logon path</primary></indexterm><term><anchor id="LOGONPATH"/>logon path (G)</term><listitem> + <para>This parameter specifies the home directory + where roaming profiles (NTuser.dat etc files for Windows NT) are + stored. Contrary to previous versions of these manual pages, it has + nothing to do with Win 9X roaming profiles. To find out how to + handle roaming profiles for Win 9X system, see the <link linkend="LOGONHOME"> + <parameter moreinfo="none">logon home</parameter></link> parameter.</para> + + <para>This option takes the standard substitutions, allowing you + to have separate logon scripts for each user or machine. It also + specifies the directory from which the "Application Data", + (<filename moreinfo="none">desktop</filename>, <filename moreinfo="none">start menu</filename>, + <filename moreinfo="none">network neighborhood</filename>, <filename moreinfo="none">programs</filename> + and other folders, and their contents, are loaded and displayed on + your Windows NT client.</para> + + <para>The share and the path must be readable by the user for + the preferences and directories to be loaded onto the Windows NT + client. The share must be writeable when the user logs in for the first + time, in order that the Windows NT client can create the NTuser.dat + and other directories.</para> + + <para>Thereafter, the directories and any of the contents can, + if required, be made read-only. It is not advisable that the + NTuser.dat file be made read-only - rename it to NTuser.man to + achieve the desired effect (a <emphasis>MAN</emphasis>datory + profile). </para> + + <para>Windows clients can sometimes maintain a connection to + the [homes] share, even though there is no user logged in. + Therefore, it is vital that the logon path does not include a + reference to the homes share (i.e. setting this parameter to + \%N\%U\profile_path will cause problems).</para> + + <para>This option takes the standard substitutions, allowing + you to have separate logon scripts for each user or machine.</para> + + <warning> + <para> + Do not quote the value. Setting this as <quote><emphasis>\\%N\profile\%U</emphasis></quote> + will break profile handling. </para> + </warning> + + <para>Note that this option is only useful if Samba is set up + as a logon server.</para> + +<para>Default: <emphasis><parameter>logon path</parameter> = \\%N\%U\profile +</emphasis> +</para> +<para>Example: <emphasis><parameter>logon path</parameter> = >\\PROFILESERVER\PROFILE\%U +</emphasis> +</para> +</listitem></varlistentry> +<varlistentry> +<indexterm significance="preferred"><primary>logon script</primary></indexterm><term><anchor id="LOGONSCRIPT"/>logon script (G)</term><listitem> + <para>This parameter specifies the batch file (.bat) or + NT command file (.cmd) to be downloaded and run on a machine when + a user successfully logs in. The file must contain the DOS + style CR/LF line endings. Using a DOS-style editor to create the + file is recommended.</para> + + <para>The script must be a relative path to the [netlogon] + service. If the [netlogon] service specifies a <link linkend="PATH"> + <parameter moreinfo="none">path</parameter></link> of <filename moreinfo="none">/usr/local/samba/netlogon</filename>, and <command moreinfo="none">logon script = STARTUP.BAT</command>, then + the file that will be downloaded is:</para> + + <para><filename moreinfo="none">/usr/local/samba/netlogon/STARTUP.BAT</filename></para> + + <para>The contents of the batch file are entirely your choice. A + suggested command would be to add <command moreinfo="none">NET TIME \\SERVER /SET + /YES</command>, to force every machine to synchronize clocks with + the same time server. Another use would be to add <command moreinfo="none">NET USE + U: \\SERVER\UTILS</command> for commonly used utilities, or <screen> + <userinput>NET USE Q: \\SERVER\ISO9001_QA</userinput></screen> for example.</para> + + <para>Note that it is particularly important not to allow write + access to the [netlogon] share, or to grant users write permission + on the batch files in a secure environment, as this would allow + the batch files to be arbitrarily modified and security to be + breached.</para> + + <para>This option takes the standard substitutions, allowing you + to have separate logon scripts for each user or machine.</para> + + <para>This option is only useful if Samba is set up as a logon + server.</para> + +<para>Default: <emphasis><parameter>logon script</parameter> = +</emphasis> +</para> +<para>Example: <emphasis><parameter>logon script</parameter> = scripts\%U.bat +</emphasis> +</para> +</listitem></varlistentry> +<varlistentry> +<indexterm significance="preferred"><primary>lppause command</primary></indexterm><term><anchor id="LPPAUSECOMMAND"/>lppause command (S)</term><listitem> + <para>This parameter specifies the command to be + executed on the server host in order to stop printing or spooling + a specific print job.</para> + + <para>This command should be a program or script which takes + a printer name and job number to pause the print job. One way + of implementing this is by using job priorities, where jobs + having a too low priority won't be sent to the printer.</para> + + <para>If a <parameter moreinfo="none">%p</parameter> is given then the printer name + is put in its place. A <parameter moreinfo="none">%j</parameter> is replaced with + the job number (an integer). On HPUX (see <parameter moreinfo="none">printing=hpux + </parameter>), if the <parameter moreinfo="none">-p%p</parameter> option is added + to the lpq command, the job will show up with the correct status, i.e. + if the job priority is lower than the set fence priority it will + have the PAUSED status, whereas if the priority is equal or higher it + will have the SPOOLED or PRINTING status.</para> + + <para>Note that it is good practice to include the absolute path + in the lppause command as the PATH may not be available to the server.</para> + +<para>Default: <emphasis><parameter>lppause command</parameter> = +# Currently no default value is given to + this string, unless the value of the <parameter moreinfo="none">printing</parameter> + parameter is <constant>SYSV</constant>, in which case the default is : <command moreinfo="none">lp -i %p-%j -H hold</command> or if the value of the <parameter moreinfo="none">printing</parameter> parameter is <constant>SOFTQ</constant>, then the default is: <command moreinfo="none">qstat -s -j%j -h</command>. +</emphasis> +</para> +<para>Example: <emphasis><parameter>lppause command</parameter> = /usr/bin/lpalt %p-%j -p0 +</emphasis> +</para> +</listitem></varlistentry> +<varlistentry> +<indexterm significance="preferred"><primary>lpq cache time</primary></indexterm><term><anchor id="LPQCACHETIME"/>lpq cache time (G)</term><listitem> + <para>This controls how long lpq info will be cached + for to prevent the <command moreinfo="none">lpq</command> command being called too + often. A separate cache is kept for each variation of the <command moreinfo="none"> + lpq</command> command used by the system, so if you use different + <command moreinfo="none">lpq</command> commands for different users then they won't + share cache information.</para> + + <para>The cache files are stored in <filename moreinfo="none">/tmp/lpq.xxxx</filename> + where xxxx is a hash of the <command moreinfo="none">lpq</command> command in use.</para> + + <para>The default is 10 seconds, meaning that the cached results + of a previous identical <command moreinfo="none">lpq</command> command will be used + if the cached data is less than 10 seconds old. A large value may + be advisable if your <command moreinfo="none">lpq</command> command is very slow.</para> + +<para>A value of 0 will disable caching completely.</para> + +<para>Default: <emphasis><parameter>lpq cache time</parameter> = 10 +</emphasis> +</para> +<para>Example: <emphasis><parameter>lpq cache time</parameter> = 30 +</emphasis> +</para> +</listitem></varlistentry> +<varlistentry> +<indexterm significance="preferred"><primary>lpq command</primary></indexterm><term><anchor id="LPQCOMMAND"/>lpq command (S)</term><listitem> + <para>This parameter specifies the command to be + executed on the server host in order to obtain <command moreinfo="none">lpq + </command>-style printer status information.</para> + + <para>This command should be a program or script which + takes a printer name as its only parameter and outputs printer + status information.</para> + + <para>Currently nine styles of printer status information + are supported; BSD, AIX, LPRNG, PLP, SYSV, HPUX, QNX, CUPS, and SOFTQ. + This covers most UNIX systems. You control which type is expected + using the <parameter moreinfo="none">printing =</parameter> option.</para> + + <para>Some clients (notably Windows for Workgroups) may not + correctly send the connection number for the printer they are + requesting status information about. To get around this, the + server reports on the first printer service connected to by the + client. This only happens if the connection number sent is invalid.</para> + + <para>If a <parameter moreinfo="none">%p</parameter> is given then the printer name + is put in its place. Otherwise it is placed at the end of the + command.</para> + + <para>Note that it is good practice to include the absolute path + in the <parameter moreinfo="none">lpq command</parameter> as the <envar>$PATH + </envar> may not be available to the server. When compiled with + the CUPS libraries, no <parameter moreinfo="none">lpq command</parameter> is + needed because smbd will make a library call to obtain the + print queue listing.</para> + +<para>Default: <emphasis><parameter>lpq command</parameter> = +</emphasis> +</para> +<para>Example: <emphasis><parameter>lpq command</parameter> = /usr/bin/lpq -P%p +</emphasis> +</para> +</listitem></varlistentry> +<varlistentry> +<indexterm significance="preferred"><primary>lpresume command</primary></indexterm><term><anchor id="LPRESUMECOMMAND"/>lpresume command (S)</term><listitem> + <para>This parameter specifies the command to be + executed on the server host in order to restart or continue + printing or spooling a specific print job.</para> + + <para>This command should be a program or script which takes + a printer name and job number to resume the print job. See + also the <link linkend="LPPAUSECOMMAND"><parameter moreinfo="none">lppause command + </parameter></link> parameter.</para> + + <para>If a <parameter moreinfo="none">%p</parameter> is given then the printer name + is put in its place. A <parameter moreinfo="none">%j</parameter> is replaced with + the job number (an integer).</para> + + <para>Note that it is good practice to include the absolute path + in the <parameter moreinfo="none">lpresume command</parameter> as the PATH may not + be available to the server.</para> + + <para>See also the <link linkend="PRINTING"><parameter moreinfo="none">printing + </parameter></link> parameter.</para> + + <para>Default: Currently no default value is given + to this string, unless the value of the <parameter moreinfo="none">printing</parameter> + parameter is <constant>SYSV</constant>, in which case the default is :</para> + + <para><command moreinfo="none">lp -i %p-%j -H resume</command></para> + + <para>or if the value of the <parameter moreinfo="none">printing</parameter> parameter + is <constant>SOFTQ</constant>, then the default is:</para> + + <para><command moreinfo="none">qstat -s -j%j -r</command></para> + +<para>Default: <emphasis><parameter>lpresume command</parameter> = lpresume command = /usr/bin/lpalt %p-%j -p2 +</emphasis> +</para> + +</listitem></varlistentry> +<varlistentry> +<indexterm significance="preferred"><primary>lprm command</primary></indexterm><term><anchor id="LPRMCOMMAND"/>lprm command (S)</term><listitem> + <para>This parameter specifies the command to be + executed on the server host in order to delete a print job.</para> + + <para>This command should be a program or script which takes + a printer name and job number, and deletes the print job.</para> + + <para>If a <parameter moreinfo="none">%p</parameter> is given then the printer name + is put in its place. A <parameter moreinfo="none">%j</parameter> is replaced with + the job number (an integer).</para> + + <para>Note that it is good practice to include the absolute + path in the <parameter moreinfo="none">lprm command</parameter> as the PATH may not be + available to the server.</para> + + +<para>Default: <emphasis><parameter>lprm command</parameter> = +# depends on the setting of <parameter moreinfo="none">printing</parameter> +</emphasis> +</para> +<para>Example: <emphasis><parameter>lprm command</parameter> = /usr/bin/lprm -P%p %j +</emphasis> +</para><para>Example: <emphasis><parameter>lprm command</parameter> = /usr/bin/cancel %p-%j +</emphasis> +</para> +</listitem></varlistentry> +<varlistentry> +<indexterm significance="preferred"><primary>machine password timeout</primary></indexterm><term><anchor id="MACHINEPASSWORDTIMEOUT"/>machine password timeout (G)</term><listitem> + <para>If a Samba server is a member of a Windows + NT Domain (see the <link linkend="SECURITYEQUALSDOMAIN">security = domain</link> + parameter) then periodically a running smbd + process will try and change the MACHINE ACCOUNT + PASSWORD stored in the TDB called <filename moreinfo="none">private/secrets.tdb + </filename>. This parameter specifies how often this password + will be changed, in seconds. The default is one week (expressed in + seconds), the same as a Windows NT Domain member server.</para> + + <para>See also <citerefentry><refentrytitle>smbpasswd</refentrytitle> + <manvolnum>8</manvolnum></citerefentry>, and the <link linkend="SECURITYEQUALSDOMAIN"> + security = domain</link> parameter.</para> + + +<para>Default: <emphasis><parameter>machine password timeout</parameter> = 604800 +</emphasis> +</para> + +</listitem></varlistentry> +<varlistentry> +<indexterm significance="preferred"><primary>magic output</primary></indexterm><term><anchor id="MAGICOUTPUT"/>magic output (S)</term><listitem> + <para>This parameter specifies the name of a file + which will contain output created by a magic script (see the + <link linkend="MAGICSCRIPT"><parameter moreinfo="none">magic script</parameter></link> + parameter below).</para> + +<warning><para>If two clients use the same <parameter moreinfo="none">magic script + </parameter> in the same directory the output file content + is undefined.</para></warning> + +<para>Default: <emphasis><parameter>magic output</parameter> = <magic script name>.out +</emphasis> +</para> +<para>Example: <emphasis><parameter>magic output</parameter> = myfile.txt +</emphasis> +</para> +</listitem></varlistentry> +<varlistentry> +<indexterm significance="preferred"><primary>magic script</primary></indexterm><term><anchor id="MAGICSCRIPT"/>magic script (S)</term><listitem> + <para>This parameter specifies the name of a file which, + if opened, will be executed by the server when the file is closed. + This allows a UNIX script to be sent to the Samba host and + executed on behalf of the connected user.</para> + + <para>Scripts executed in this way will be deleted upon + completion assuming that the user has the appropriate level + of privilege and the file permissions allow the deletion.</para> + + <para>If the script generates output, output will be sent to + the file specified by the <link linkend="MAGICOUTPUT"><parameter moreinfo="none"> + magic output</parameter></link> parameter (see above).</para> + + <para>Note that some shells are unable to interpret scripts + containing CR/LF instead of CR as + the end-of-line marker. Magic scripts must be executable + <emphasis>as is</emphasis> on the host, which for some hosts and + some shells will require filtering at the DOS end.</para> + + <para>Magic scripts are <emphasis>EXPERIMENTAL</emphasis> and + should <emphasis>NOT</emphasis> be relied upon.</para> + +<para>Default: <emphasis><parameter>magic script</parameter> = +</emphasis> +</para> +<para>Example: <emphasis><parameter>magic script</parameter> = user.csh +</emphasis> +</para> +</listitem></varlistentry> +<varlistentry> +<indexterm significance="preferred"><primary>mangled map</primary></indexterm><term><anchor id="MANGLEDMAP"/>mangled map (S)</term><listitem> + <para>This is for those who want to directly map UNIX + file names which cannot be represented on Windows/DOS. The mangling + of names is not always what is needed. In particular you may have + documents with file extensions that differ between DOS and UNIX. + For example, under UNIX it is common to use <filename moreinfo="none">.html</filename> + for HTML files, whereas under Windows/DOS <filename moreinfo="none">.htm</filename> + is more commonly used.</para> + + <para>So to map <filename moreinfo="none">html</filename> to <filename moreinfo="none">htm</filename> + you would use:</para> + + <para><command moreinfo="none">mangled map = (*.html *.htm)</command></para> + + <para>One very useful case is to remove the annoying <filename moreinfo="none">;1 + </filename> off the ends of filenames on some CDROMs (only visible + under some UNIXes). To do this use a map of (*;1 *;).</para> + +<para>Default: <emphasis><parameter>mangled map</parameter> = +# no mangled map +</emphasis> +</para> +<para>Example: <emphasis><parameter>mangled map</parameter> = (*;1 *;) +</emphasis> +</para> +</listitem></varlistentry> +<varlistentry> +<indexterm significance="preferred"><primary>mangled names</primary></indexterm><term><anchor id="MANGLEDNAMES"/>mangled names (S)</term><listitem> + <para>This controls whether non-DOS names under UNIX + should be mapped to DOS-compatible names ("mangled") and made visible, + or whether non-DOS names should simply be ignored.</para> + + <para>See the section on <link linkend="NAMEMANGLINGSECT">NAME MANGLING</link> for + details on how to control the mangling process.</para> + + <para>If mangling is used then the mangling algorithm is as follows:</para> + + <itemizedlist> + <listitem> + <para>The first (up to) five alphanumeric characters + before the rightmost dot of the filename are preserved, forced + to upper case, and appear as the first (up to) five characters + of the mangled name.</para> </listitem> - </varlistentry> - - <varlistentry> - <term>%g</term> - <listitem><para>primary group name of %u.</para></listitem> - </varlistentry> + + <listitem> + <para>A tilde "~" is appended to the first part of the mangled + name, followed by a two-character unique sequence, based on the + original root name (i.e., the original filename minus its final + extension). The final extension is included in the hash calculation + only if it contains any upper case characters or is longer than three + characters.</para> + + <para>Note that the character to use may be specified using + the <link linkend="MANGLINGCHAR"><parameter moreinfo="none">mangling char</parameter> + </link> option, if you don't like '~'.</para> + </listitem> + + <listitem> + <para>Files whose UNIX name begins with a dot will be + presented as DOS hidden files. The mangled name will be created as + for other filenames, but with the leading dot removed and "___" as + its extension regardless of actual original extension (that's three + underscores).</para> + </listitem> + </itemizedlist> + + <para>The two-digit hash value consists of upper case alphanumeric characters.</para> + + <para>This algorithm can cause name collisions only if files + in a directory share the same first five alphanumeric characters. + The probability of such a clash is 1/1300.</para> + + <para>The name mangling (if enabled) allows a file to be + copied between UNIX directories from Windows/DOS while retaining + the long UNIX filename. UNIX files can be renamed to a new extension + from Windows/DOS and will retain the same basename. Mangled names + do not change between sessions.</para> + +<para>Default: <emphasis><parameter>mangled names</parameter> = yes +</emphasis> +</para> + +</listitem></varlistentry> +<varlistentry> +<indexterm significance="preferred"><primary>mangle prefix</primary></indexterm><term><anchor id="MANGLEPREFIX"/>mangle prefix (G)</term><listitem> + <para> controls the number of prefix + characters from the original name used when generating + the mangled names. A larger value will give a weaker + hash and therefore more name collisions. The minimum + value is 1 and the maximum value is 6.</para> + + <para> + mangle prefix is effective only when mangling method is hash2. + </para> + +<para>Default: <emphasis><parameter>mangle prefix</parameter> = 1 +</emphasis> +</para> +<para>Example: <emphasis><parameter>mangle prefix</parameter> = 4 +</emphasis> +</para> +</listitem></varlistentry> +<varlistentry> +<indexterm significance="preferred"><primary>mangling char</primary></indexterm><term><anchor id="MANGLINGCHAR"/>mangling char (S)</term><listitem> + <para>This controls what character is used as + the <emphasis>magic</emphasis> character in <link linkend="NAMEMANGLINGSECT">name mangling</link>. The + default is a '~' but this may interfere with some software. Use this option to set + it to whatever you prefer. This is effective only when mangling method is hash.</para> + +<para>Default: <emphasis><parameter>mangling char</parameter> = ~ +</emphasis> +</para> +<para>Example: <emphasis><parameter>mangling char</parameter> = ^ +</emphasis> +</para> +</listitem></varlistentry> +<varlistentry> +<indexterm significance="preferred"><primary>mangling method</primary></indexterm><term><anchor id="MANGLINGMETHOD"/>mangling method (G)</term><listitem> + <para> controls the algorithm used for the generating + the mangled names. Can take two different values, "hash" and + "hash2". "hash" is the algorithm that was used + used in Samba for many years and was the default in Samba 2.2.x "hash2" is + now the default and is newer and considered a better algorithm (generates less collisions) in + the names. Many Win32 applications store the mangled names and so + changing to algorithms must not be done lightly as these applications + may break unless reinstalled.</para> + +<para>Default: <emphasis><parameter>mangling method</parameter> = hash2 +</emphasis> +</para> +<para>Example: <emphasis><parameter>mangling method</parameter> = hash +</emphasis> +</para> +</listitem></varlistentry> +<varlistentry> +<indexterm significance="preferred"><primary>map acl inherit</primary></indexterm><term><anchor id="MAPACLINHERIT"/>map acl inherit (S)</term><listitem> + <para>This boolean parameter controls whether <citerefentry><refentrytitle>smbd</refentrytitle> + <manvolnum>8</manvolnum></citerefentry> will attempt to map the 'inherit' and 'protected' + access control entry flags stored in Windows ACLs into an extended attribute + called user.SAMBA_PAI. This parameter only takes effect if Samba is being run + on a platform that supports extended attributes (Linux and IRIX so far) and + allows the Windows 2000 ACL editor to correctly use inheritance with the Samba + POSIX ACL mapping code. + </para> + +<para>Default: <emphasis><parameter>map acl inherit</parameter> = no +</emphasis> +</para> + +</listitem></varlistentry> +<varlistentry> +<indexterm significance="preferred"><primary>map archive</primary></indexterm><term><anchor id="MAPARCHIVE"/>map archive (S)</term><listitem> + <para>This controls whether the DOS archive attribute + should be mapped to the UNIX owner execute bit. The DOS archive bit + is set when a file has been modified since its last backup. One + motivation for this option it to keep Samba/your PC from making + any file it touches from becoming executable under UNIX. This can + be quite annoying for shared source code, documents, etc...</para> + + <para>Note that this requires the <parameter moreinfo="none">create mask</parameter> + parameter to be set such that owner execute bit is not masked out + (i.e. it must include 100). See the parameter <link linkend="CREATEMASK"> + <parameter moreinfo="none">create mask</parameter></link> for details.</para> + +<para>Default: <emphasis><parameter>map archive</parameter> = yes +</emphasis> +</para> + +</listitem></varlistentry> +<varlistentry> +<indexterm significance="preferred"><primary>map hidden</primary></indexterm><term><anchor id="MAPHIDDEN"/>map hidden (S)</term><listitem> + <para>This controls whether DOS style hidden files + should be mapped to the UNIX world execute bit.</para> + + <para>Note that this requires the <parameter moreinfo="none">create mask</parameter> + to be set such that the world execute bit is not masked out (i.e. + it must include 001). See the parameter <link linkend="CREATEMASK"> + <parameter moreinfo="none">create mask</parameter></link> for details.</para> + + +<para><emphasis>No default</emphasis></para> + +</listitem></varlistentry> +<varlistentry> +<indexterm significance="preferred"><primary>map system</primary></indexterm><term><anchor id="MAPSYSTEM"/>map system (S)</term><listitem> + <para>This controls whether DOS style system files + should be mapped to the UNIX group execute bit.</para> + + <para>Note that this requires the <parameter moreinfo="none">create mask</parameter> + to be set such that the group execute bit is not masked out (i.e. + it must include 010). See the parameter <link linkend="CREATEMASK"> + <parameter moreinfo="none">create mask</parameter></link> for details.</para> - <varlistentry> - <term>%H</term> - <listitem><para>the home directory of the user given - by %u.</para></listitem> - </varlistentry> - - <varlistentry> - <term>%N</term> - <listitem><para>the name of your NIS home directory server. - This is obtained from your NIS auto.map entry. If you have - not compiled Samba with the <emphasis>--with-automount</emphasis> - option, this value will be the same as %L.</para> +<para>Default: <emphasis><parameter>map system</parameter> = no +</emphasis> +</para> + +</listitem></varlistentry> +<varlistentry> +<indexterm significance="preferred"><primary>map to guest</primary></indexterm><term><anchor id="MAPTOGUEST"/>map to guest (G)</term><listitem> + <para>This parameter is only useful in <link linkend="SECURITY"> + security</link> modes other than <parameter moreinfo="none">security = share</parameter> + - i.e. <constant>user</constant>, <constant>server</constant>, + and <constant>domain</constant>.</para> + + <para>This parameter can take three different values, which tell + <citerefentry><refentrytitle>smbd</refentrytitle> + <manvolnum>8</manvolnum></citerefentry> what to do with user + login requests that don't match a valid UNIX user in some way.</para> + + <para>The three settings are :</para> + + <itemizedlist> + <listitem> + <para><constant>Never</constant> - Means user login + requests with an invalid password are rejected. This is the + default.</para> + </listitem> + + <listitem> + <para><constant>Bad User</constant> - Means user + logins with an invalid password are rejected, unless the username + does not exist, in which case it is treated as a guest login and + mapped into the <link linkend="GUESTACCOUNT"><parameter moreinfo="none"> + guest account</parameter></link>.</para> + </listitem> + + <listitem> + <para><constant>Bad Password</constant> - Means user logins + with an invalid password are treated as a guest login and mapped + into the <link linkend="GUESTACCOUNT">guest account</link>. Note that + this can cause problems as it means that any user incorrectly typing + their password will be silently logged on as "guest" - and + will not know the reason they cannot access files they think + they should - there will have been no message given to them + that they got their password wrong. Helpdesk services will + <emphasis>hate</emphasis> you if you set the <parameter moreinfo="none">map to + guest</parameter> parameter this way :-).</para> + </listitem> + </itemizedlist> + + <para>Note that this parameter is needed to set up "Guest" + share services when using <parameter moreinfo="none">security</parameter> modes other than + share. This is because in these modes the name of the resource being + requested is <emphasis>not</emphasis> sent to the server until after + the server has successfully authenticated the client so the server + cannot make authentication decisions at the correct time (connection + to the share) for "Guest" shares.</para> + + <para>For people familiar with the older Samba releases, this + parameter maps to the old compile-time setting of the <constant> + GUEST_SESSSETUP</constant> value in local.h.</para> + +<para>Default: <emphasis><parameter>map to guest</parameter> = Never +</emphasis> +</para> +<para>Example: <emphasis><parameter>map to guest</parameter> = Bad User +</emphasis> +</para> +</listitem></varlistentry> +<varlistentry> +<indexterm significance="preferred"><primary>max connections</primary></indexterm><term><anchor id="MAXCONNECTIONS"/>max connections (S)</term><listitem> + <para>This option allows the number of simultaneous connections to a service to be limited. + If <parameter moreinfo="none">max connections</parameter> is greater than 0 then connections + will be refused if this number of connections to the service are already open. A value + of zero mean an unlimited number of connections may be made.</para> + + <para>Record lock files are used to implement this feature. The lock files will be stored in + the directory specified by the <link linkend="LOCKDIRECTORY"> + <parameter moreinfo="none">lock directory</parameter></link> option.</para> + +<para>Default: <emphasis><parameter>max connections</parameter> = 0 +</emphasis> +</para> +<para>Example: <emphasis><parameter>max connections</parameter> = 10 +</emphasis> +</para> +</listitem></varlistentry> +<varlistentry> +<indexterm significance="preferred"><primary>max disk size</primary></indexterm><term><anchor id="MAXDISKSIZE"/>max disk size (G)</term><listitem> + <para>This option allows you to put an upper limit + on the apparent size of disks. If you set this option to 100 + then all shares will appear to be not larger than 100 MB in + size.</para> + + <para>Note that this option does not limit the amount of + data you can put on the disk. In the above case you could still + store much more than 100 MB on the disk, but if a client ever asks + for the amount of free disk space or the total disk size then the + result will be bounded by the amount specified in <parameter moreinfo="none">max + disk size</parameter>.</para> + + <para>This option is primarily useful to work around bugs + in some pieces of software that can't handle very large disks, + particularly disks over 1GB in size.</para> + + <para>A <parameter moreinfo="none">max disk size</parameter> of 0 means no limit.</para> + +<para>Default: <emphasis><parameter>max disk size</parameter> = 0 +</emphasis> +</para> +<para>Example: <emphasis><parameter>max disk size</parameter> = 1000 +</emphasis> +</para> +</listitem></varlistentry> +<varlistentry> +<indexterm significance="preferred"><primary>max log size</primary></indexterm><term><anchor id="MAXLOGSIZE"/>max log size (G)</term><listitem> + <para>This option (an integer in kilobytes) specifies + the max size the log file should grow to. Samba periodically checks + the size and if it is exceeded it will rename the file, adding + a <filename moreinfo="none">.old</filename> extension.</para> + +<para>A size of 0 means no limit.</para> + +<para>Default: <emphasis><parameter>max log size</parameter> = 5000 +</emphasis> +</para><para>Default: <emphasis><parameter>max log size</parameter> = 1000 +</emphasis> +</para> + +</listitem></varlistentry> +<varlistentry> +<indexterm significance="preferred"><primary>max mux</primary></indexterm><term><anchor id="MAXMUX"/>max mux (G)</term><listitem> + <para>This option controls the maximum number of + outstanding simultaneous SMB operations that Samba tells the client + it will allow. You should never need to set this parameter.</para> + +<para>Default: <emphasis><parameter>max mux</parameter> = 50 +</emphasis> +</para> + +</listitem></varlistentry> +<varlistentry> +<indexterm significance="preferred"><primary>max open files</primary></indexterm><term><anchor id="MAXOPENFILES"/>max open files (G)</term><listitem> + <para>This parameter limits the maximum number of + open files that one <citerefentry><refentrytitle>smbd</refentrytitle> + <manvolnum>8</manvolnum></citerefentry> file + serving process may have open for a client at any one time. The + default for this parameter is set very high (10,000) as Samba uses + only one bit per unopened file.</para> + + <para>The limit of the number of open files is usually set + by the UNIX per-process file descriptor limit rather than + this parameter so you should never need to touch this parameter.</para> + +<para>Default: <emphasis><parameter>max open files</parameter> = 10000 +</emphasis> +</para> + +</listitem></varlistentry> +<varlistentry> +<indexterm significance="preferred"><primary>max print jobs</primary></indexterm><term><anchor id="MAXPRINTJOBS"/>max print jobs (S)</term><listitem> + <para>This parameter limits the maximum number of + jobs allowable in a Samba printer queue at any given moment. + If this number is exceeded, <citerefentry><refentrytitle>smbd</refentrytitle> + <manvolnum>8</manvolnum></citerefentry> will remote "Out of Space" to the client. + </para> + +<para>Default: <emphasis><parameter>max print jobs</parameter> = 1000 +</emphasis> +</para> +<para>Example: <emphasis><parameter>max print jobs</parameter> = 5000 +</emphasis> +</para> +</listitem></varlistentry> +<varlistentry> +<indexterm significance="preferred"><primary>protocol</primary><see>max protocol</see></indexterm><term><anchor id="PROTOCOL"/>protocol</term><listitem><para>This parameter is a synonym for max protocol.</para></listitem></varlistentry><varlistentry> +<indexterm significance="preferred"><primary>max protocol</primary></indexterm><term><anchor id="MAXPROTOCOL"/>max protocol (G)</term><listitem> + <para>The value of the parameter (a string) is the highest + protocol level that will be supported by the server.</para> + + <para>Possible values are :</para> + <itemizedlist> + <listitem> + <para><constant>CORE</constant>: Earliest version. No + concept of user names.</para> + </listitem> + + <listitem> + <para><constant>COREPLUS</constant>: Slight improvements on + CORE for efficiency.</para> + </listitem> + + <listitem> + <para><constant>LANMAN1</constant>: First <emphasis> + modern</emphasis> version of the protocol. Long filename + support.</para> + </listitem> + + <listitem> + <para><constant>LANMAN2</constant>: Updates to Lanman1 protocol.</para> + </listitem> + + <listitem> + <para><constant>NT1</constant>: Current up to date version of the protocol. + Used by Windows NT. Known as CIFS.</para> + </listitem> + </itemizedlist> + + <para>Normally this option should not be set as the automatic + negotiation phase in the SMB protocol takes care of choosing + the appropriate protocol.</para> + +<para>Default: <emphasis><parameter>max protocol</parameter> = NT1 +</emphasis> +</para> +<para>Example: <emphasis><parameter>max protocol</parameter> = LANMAN1 +</emphasis> +</para> +</listitem></varlistentry> +<varlistentry> +<indexterm significance="preferred"><primary>max reported print jobs</primary></indexterm><term><anchor id="MAXREPORTEDPRINTJOBS"/>max reported print jobs (S)</term><listitem> + <para>This parameter limits the maximum number of + jobs displayed in a port monitor for Samba printer queue at any given + moment. If this number is exceeded, the excess jobs will not be shown. + A value of zero means there is no limit on the number of print + jobs reported.</para> + +<para>Default: <emphasis><parameter>max reported print jobs</parameter> = 0 +</emphasis> +</para> +<para>Example: <emphasis><parameter>max reported print jobs</parameter> = 1000 +</emphasis> +</para> +</listitem></varlistentry> +<varlistentry> +<indexterm significance="preferred"><primary>max smbd processes</primary></indexterm><term><anchor id="MAXSMBDPROCESSES"/>max smbd processes (G)</term><listitem> + <para>This parameter limits the maximum number of <citerefentry><refentrytitle>smbd</refentrytitle> + <manvolnum>8</manvolnum></citerefentry> processes concurrently running on a system and is intended + as a stopgap to prevent degrading service to clients in the event that the server has insufficient + resources to handle more than this number of connections. Remember that under normal operating + conditions, each user will have an <citerefentry><refentrytitle>smbd</refentrytitle> + <manvolnum>8</manvolnum></citerefentry> associated with him or her to handle connections to all + shares from a given host.</para> + +<para>Default: <emphasis><parameter>max smbd processes</parameter> = 0 +</emphasis> +</para> +<para>Example: <emphasis><parameter>max smbd processes</parameter> = 1000 +</emphasis> +</para> +</listitem></varlistentry> +<varlistentry> +<indexterm significance="preferred"><primary>max stat cache size</primary></indexterm><term><anchor id="MAXSTATCACHESIZE"/>max stat cache size (G)</term><listitem> + <para>This parameter specifies the maximum amount of memory (in kilobytes) + smbd will use for the stat cache that speeds up case insensitive name mappings. + If set to zero (the default) there is no limit. Change this if your smbd processes + grow too large when servicing something like a back-up application.</para> + +<para>Default: <emphasis><parameter>max stat cache size</parameter> = 0 +</emphasis> +</para> + +</listitem></varlistentry> +<varlistentry> +<indexterm significance="preferred"><primary>max ttl</primary></indexterm><term><anchor id="MAXTTL"/>max ttl (G)</term><listitem> + <para>This option tells <citerefentry><refentrytitle>nmbd</refentrytitle> + <manvolnum>8</manvolnum></citerefentry> what the default 'time to live' + of NetBIOS names should be (in seconds) when <command moreinfo="none">nmbd</command> is + requesting a name using either a broadcast packet or from a WINS server. You should + never need to change this parameter. The default is 3 days.</para> + +<para>Default: <emphasis><parameter>max ttl</parameter> = 259200 +</emphasis> +</para> + +</listitem></varlistentry> +<varlistentry> +<indexterm significance="preferred"><primary>max wins ttl</primary></indexterm><term><anchor id="MAXWINSTTL"/>max wins ttl (G)</term><listitem> + <para>This option tells <citerefentry><refentrytitle>smbd</refentrytitle> + <manvolnum>8</manvolnum></citerefentry> when acting as a WINS server (<link linkend="WINSSUPPORT"> + <parameter moreinfo="none">wins support = yes</parameter></link>) what the maximum + 'time to live' of NetBIOS names that <command moreinfo="none">nmbd</command> + will grant will be (in seconds). You should never need to change this + parameter. The default is 6 days (518400 seconds).</para> + +<para>Default: <emphasis><parameter>max wins ttl</parameter> = 518400 +</emphasis> +</para> + +</listitem></varlistentry> +<varlistentry> +<indexterm significance="preferred"><primary>max xmit</primary></indexterm><term><anchor id="MAXXMIT"/>max xmit (G)</term><listitem> + <para>This option controls the maximum packet size + that will be negotiated by Samba. The default is 65535, which + is the maximum. In some cases you may find you get better performance + with a smaller value. A value below 2048 is likely to cause problems. +</para> + +<para>Default: <emphasis><parameter>max xmit</parameter> = 65535 +</emphasis> +</para> +<para>Example: <emphasis><parameter>max xmit</parameter> = 8192 +</emphasis> +</para> +</listitem></varlistentry> +<varlistentry> +<indexterm significance="preferred"><primary>message command</primary></indexterm><term><anchor id="MESSAGECOMMAND"/>message command (G)</term><listitem> + <para>This specifies what command to run when the + server receives a WinPopup style message.</para> + + <para>This would normally be a command that would + deliver the message somehow. How this is to be done is + up to your imagination.</para> + + <para>An example is:</para> + + <para><command moreinfo="none">message command = csh -c 'xedit %s;rm %s' &</command> + </para> + + <para>This delivers the message using <command moreinfo="none">xedit</command>, then + removes it afterwards. <emphasis>NOTE THAT IT IS VERY IMPORTANT + THAT THIS COMMAND RETURN IMMEDIATELY</emphasis>. That's why I + have the '&' on the end. If it doesn't return immediately then + your PCs may freeze when sending messages (they should recover + after 30 seconds, hopefully).</para> + + <para>All messages are delivered as the global guest user. + The command takes the standard substitutions, although <parameter moreinfo="none"> + %u</parameter> won't work (<parameter moreinfo="none">%U</parameter> may be better + in this case).</para> + + <para>Apart from the standard substitutions, some additional + ones apply. In particular:</para> + + <itemizedlist> + <listitem> + <para><parameter moreinfo="none">%s</parameter> = the filename containing + the message.</para> + </listitem> + + <listitem> + <para><parameter moreinfo="none">%t</parameter> = the destination that + the message was sent to (probably the server name).</para> + </listitem> + + <listitem> + <para><parameter moreinfo="none">%f</parameter> = who the message + is from.</para> </listitem> - </varlistentry> + </itemizedlist> + + <para>You could make this command send mail, or whatever else + takes your fancy. Please let us know of any really interesting + ideas you have.</para> + + <para>Here's a way of sending the messages as mail to root:</para> + + <para><command moreinfo="none">message command = /bin/mail -s 'message from %f on + %m' root < %s; rm %s</command></para> + + <para>If you don't have a message command then the message + won't be delivered and Samba will tell the sender there was + an error. Unfortunately WfWg totally ignores the error code + and carries on regardless, saying that the message was delivered. + </para> + + <para>If you want to silently delete it then try:</para> + + <para><command moreinfo="none">message command = rm %s</command></para> + +<para>Default: <emphasis><parameter>message command</parameter> = +</emphasis> +</para> +<para>Example: <emphasis><parameter>message command</parameter> = csh -c 'xedit %s; rm %s' & +</emphasis> +</para> +</listitem></varlistentry> +<varlistentry> +<indexterm significance="preferred"><primary>min passwd length</primary><see>min password length</see></indexterm><term><anchor id="MINPASSWDLENGTH"/>min passwd length</term><listitem><para>This parameter is a synonym for min password length.</para></listitem></varlistentry><varlistentry> +<indexterm significance="preferred"><primary>min password length</primary></indexterm><term><anchor id="MINPASSWORDLENGTH"/>min password length (G)</term><listitem> + <para>This option sets the minimum length in characters of a + plaintext password that <command moreinfo="none">smbd</command> will + accept when performing UNIX password changing.</para> + +<para>Default: <emphasis><parameter>min password length</parameter> = 5 +</emphasis> +</para> + +</listitem></varlistentry> +<varlistentry> +<indexterm significance="preferred"><primary>min print space</primary></indexterm><term><anchor id="MINPRINTSPACE"/>min print space (S)</term><listitem> + <para>This sets the minimum amount of free disk + space that must be available before a user will be able to spool + a print job. It is specified in kilobytes. The default is 0, which + means a user can always spool a print job.</para> + +<para>Default: <emphasis><parameter>min print space</parameter> = 0 +</emphasis> +</para> +<para>Example: <emphasis><parameter>min print space</parameter> = 2000 +</emphasis> +</para> +</listitem></varlistentry> +<varlistentry> +<indexterm significance="preferred"><primary>min protocol</primary></indexterm><term><anchor id="MINPROTOCOL"/>min protocol (G)</term><listitem> + <para>The value of the parameter (a string) is the + lowest SMB protocol dialect than Samba will support. Please refer + to the <link linkend="MAXPROTOCOL"><parameter moreinfo="none">max protocol</parameter></link> + parameter for a list of valid protocol names and a brief description + of each. You may also wish to refer to the C source code in + <filename moreinfo="none">source/smbd/negprot.c</filename> for a listing of known protocol + dialects supported by clients.</para> + + <para>If you are viewing this parameter as a security measure, you should + also refer to the <link linkend="LANMANAUTH"><parameter moreinfo="none">lanman + auth</parameter></link> parameter. Otherwise, you should never need + to change this parameter.</para> + +<para>Default: <emphasis><parameter>min protocol</parameter> = CORE +</emphasis> +</para> +<para>Example: <emphasis><parameter>min protocol</parameter> = NT1 +</emphasis> +</para> +</listitem></varlistentry> +<varlistentry> +<indexterm significance="preferred"><primary>min wins ttl</primary></indexterm><term><anchor id="MINWINSTTL"/>min wins ttl (G)</term><listitem> + <para>This option tells <citerefentry><refentrytitle>nmbd</refentrytitle> + <manvolnum>8</manvolnum></citerefentry> + when acting as a WINS server (<link linkend="WINSSUPPORT"><parameter moreinfo="none"> + wins support = yes</parameter></link>) what the minimum 'time to live' + of NetBIOS names that <command moreinfo="none">nmbd</command> will grant will be (in + seconds). You should never need to change this parameter. The default + is 6 hours (21600 seconds).</para> + +<para>Default: <emphasis><parameter>min wins ttl</parameter> = 21600 +</emphasis> +</para> + +</listitem></varlistentry> +<varlistentry> +<indexterm significance="preferred"><primary>msdfs proxy</primary></indexterm><term><anchor id="MSDFSPROXY"/>msdfs proxy (S)</term><listitem> + <para>This parameter indicates that the share is a + stand-in for another CIFS share whose location is specified by + the value of the parameter. When clients attempt to connect to + this share, they are redirected to the proxied share using + the SMB-Dfs protocol.</para> + + <para>Only Dfs roots can act as proxy shares. Take a look at the + <link linkend="MSDFSROOT"><parameter moreinfo="none">msdfs root</parameter></link> + and <link linkend="HOSTMSDFS"><parameter moreinfo="none">host msdfs</parameter></link> + options to find out how to set up a Dfs root share.</para> + +<para><emphasis>No default</emphasis></para> +<para>Example: <emphasis><parameter>msdfs proxy</parameter> = \otherserver\someshare +</emphasis> +</para> +</listitem></varlistentry> +<varlistentry> +<indexterm significance="preferred"><primary>msdfs root</primary></indexterm><term><anchor id="MSDFSROOT"/>msdfs root (S)</term><listitem> + <para>If set to <constant>yes</constant>, Samba treats the + share as a Dfs root and allows clients to browse the + distributed file system tree rooted at the share directory. + Dfs links are specified in the share directory by symbolic + links of the form <filename moreinfo="none">msdfs:serverA\\shareA,serverB\\shareB</filename> + and so on. For more information on setting up a Dfs tree on + Samba, refer to <link linkend="msdfs"/>.</para> + +<para>Default: <emphasis><parameter>msdfs root</parameter> = no +</emphasis> +</para> + +</listitem></varlistentry> +<varlistentry> +<indexterm significance="preferred"><primary>name cache timeout</primary></indexterm><term><anchor id="NAMECACHETIMEOUT"/>name cache timeout (G)</term><listitem> + <para>Specifies the number of seconds it takes before + entries in samba's hostname resolve cache time out. If + the timeout is set to 0. the caching is disabled. +</para> + +<para>Default: <emphasis><parameter>name cache timeout</parameter> = 660 +</emphasis> +</para> +<para>Example: <emphasis><parameter>name cache timeout</parameter> = 0 +</emphasis> +</para> +</listitem></varlistentry> +<varlistentry> +<indexterm significance="preferred"><primary>name resolve order</primary></indexterm><term><anchor id="NAMERESOLVEORDER"/>name resolve order (G)</term><listitem> + <para>This option is used by the programs in the Samba + suite to determine what naming services to use and in what order + to resolve host names to IP addresses. Its main purpose to is to + control how netbios name resolution is performed. The option takes a space + separated string of name resolution options.</para> + + <para>The options are: "lmhosts", "host", + "wins" and "bcast". They cause names to be + resolved as follows:</para> + + <itemizedlist> + <listitem> + <para><constant>lmhosts</constant> : Lookup an IP + address in the Samba lmhosts file. If the line in lmhosts has + no name type attached to the NetBIOS name (see the <ulink url="lmhosts.5.html">lmhosts(5)</ulink> for details) then + any name type matches for lookup.</para> + </listitem> + + <listitem> + <para><constant>host</constant> : Do a standard host + name to IP address resolution, using the system <filename moreinfo="none">/etc/hosts + </filename>, NIS, or DNS lookups. This method of name resolution + is operating system depended for instance on IRIX or Solaris this + may be controlled by the <filename moreinfo="none">/etc/nsswitch.conf</filename> + file. Note that this method is used only if the NetBIOS name + type being queried is the 0x20 (server) name type or 0x1c (domain controllers). + The latter case is only useful for active directory domains and results in a DNS + query for the SRV RR entry matching _ldap._tcp.domain.</para> + </listitem> + + <listitem> + <para><constant>wins</constant> : Query a name with + the IP address listed in the <link linkend="WINSSERVER"><parameter moreinfo="none"> + wins server</parameter></link> parameter. If no WINS server has + been specified this method will be ignored.</para> + </listitem> + + <listitem> + <para><constant>bcast</constant> : Do a broadcast on + each of the known local interfaces listed in the <link linkend="INTERFACES"><parameter moreinfo="none">interfaces</parameter></link> + parameter. This is the least reliable of the name resolution + methods as it depends on the target host being on a locally + connected subnet.</para> + </listitem> +</itemizedlist> + + <para>The example below will cause the local lmhosts file to be examined + first, followed by a broadcast attempt, followed by a normal + system hostname lookup.</para> + + <para>When Samba is functioning in ADS security mode (<command moreinfo="none">security = ads</command>) + it is advised to use following settings for <parameter moreinfo="none">name resolve order</parameter>:</para> + + <para><command moreinfo="none">name resolve order = wins bcast</command></para> + + <para>DC lookups will still be done via DNS, but fallbacks to netbios names will + not inundate your DNS servers with needless querys for DOMAIN<0x1c> lookups.</para> + + +<para>Default: <emphasis><parameter>name resolve order</parameter> = lmhosts host wins bcast +</emphasis> +</para> +<para>Example: <emphasis><parameter>name resolve order</parameter> = lmhosts bcast host +</emphasis> +</para> +</listitem></varlistentry> +<varlistentry> +<indexterm significance="preferred"><primary>netbios aliases</primary></indexterm><term><anchor id="NETBIOSALIASES"/>netbios aliases (G)</term><listitem> + <para>This is a list of NetBIOS names that nmbd will + advertise as additional names by which the Samba server is known. This allows one machine + to appear in browse lists under multiple names. If a machine is acting as a browse server + or logon server none of these names will be advertised as either browse server or logon + servers, only the primary name of the machine will be advertised with these capabilities. + </para> + +<para>Default: <emphasis><parameter>netbios aliases</parameter> = +# empty string (no additional names) +</emphasis> +</para> +<para>Example: <emphasis><parameter>netbios aliases</parameter> = TEST TEST1 TEST2 +</emphasis> +</para> +</listitem></varlistentry> +<varlistentry> +<indexterm significance="preferred"><primary>netbios name</primary></indexterm><term><anchor id="NETBIOSNAME"/>netbios name (G)</term><listitem> + <para>This sets the NetBIOS name by which a Samba + server is known. By default it is the same as the first component + of the host's DNS name. If a machine is a browse server or + logon server this name (or the first component + of the hosts DNS name) will be the name that these services are + advertised under.</para> + +<para>Default: <emphasis><parameter>netbios name</parameter> = +# machine DNS name +</emphasis> +</para> +<para>Example: <emphasis><parameter>netbios name</parameter> = MYNAME +</emphasis> +</para> +</listitem></varlistentry> +<varlistentry> +<indexterm significance="preferred"><primary>netbios scope</primary></indexterm><term><anchor id="NETBIOSSCOPE"/>netbios scope (G)</term><listitem> + <para>This sets the NetBIOS scope that Samba will + operate under. This should not be set unless every machine + on your LAN also sets this value.</para> + +<para>Default: <emphasis><parameter>netbios scope</parameter> = +</emphasis> +</para> + +</listitem></varlistentry> +<varlistentry> +<indexterm significance="preferred"><primary>nis homedir</primary></indexterm><term><anchor id="NISHOMEDIR"/>nis homedir (G)</term><listitem> + <para>Get the home share server from a NIS map. For + UNIX systems that use an automounter, the user's home directory + will often be mounted on a workstation on demand from a remote + server. </para> + + <para>When the Samba logon server is not the actual home directory + server, but is mounting the home directories via NFS then two + network hops would be required to access the users home directory + if the logon server told the client to use itself as the SMB server + for home directories (one over SMB and one over NFS). This can + be very slow.</para> + + <para>This option allows Samba to return the home share as + being on a different server to the logon server and as + long as a Samba daemon is running on the home directory server, + it will be mounted on the Samba client directly from the directory + server. When Samba is returning the home share to the client, it + will consult the NIS map specified in <link linkend="HOMEDIRMAP"> + <parameter moreinfo="none">homedir map</parameter></link> and return the server + listed there.</para> + + <para>Note that for this option to work there must be a working + NIS system and the Samba server with this option must also + be a logon server.</para> + +<para>Default: <emphasis><parameter>nis homedir</parameter> = no +</emphasis> +</para> + +</listitem></varlistentry> +<varlistentry> +<indexterm significance="preferred"><primary>nt acl support</primary></indexterm><term><anchor id="NTACLSUPPORT"/>nt acl support (S)</term><listitem> + <para>This boolean parameter controls whether <citerefentry><refentrytitle>smbd</refentrytitle> + <manvolnum>8</manvolnum></citerefentry> will attempt to map + UNIX permissions into Windows NT access control lists. + This parameter was formally a global parameter in releases + prior to 2.2.2.</para> + +<para>Default: <emphasis><parameter>nt acl support</parameter> = yes +</emphasis> +</para> + +</listitem></varlistentry> +<varlistentry> +<indexterm significance="preferred"><primary>ntlm auth</primary></indexterm><term><anchor id="NTLMAUTH"/>ntlm auth (G)</term><listitem> + <para>This parameter determines whether or not <citerefentry><refentrytitle>smbd</refentrytitle> + <manvolnum>8</manvolnum></citerefentry> will attempt to + authenticate users using the NTLM encrypted password response. + If disabled, either the lanman password hash or an NTLMv2 response + will need to be sent by the client.</para> + + <para>If this option, and <command moreinfo="none">lanman + auth</command> are both disabled, then only NTLMv2 logins will be + permited. Not all clients support NTLMv2, and most will require + special configuration to us it.</para> + +<para>Default: <emphasis><parameter>ntlm auth</parameter> = yes +</emphasis> +</para> + +</listitem></varlistentry> +<varlistentry> +<indexterm significance="preferred"><primary>nt pipe support</primary></indexterm><term><anchor id="NTPIPESUPPORT"/>nt pipe support (G)</term><listitem> + <para>This boolean parameter controls whether + <citerefentry><refentrytitle>smbd</refentrytitle> + <manvolnum>8</manvolnum></citerefentry> will allow Windows NT + clients to connect to the NT SMB specific <constant>IPC$</constant> + pipes. This is a developer debugging option and can be left + alone.</para> + +<para>Default: <emphasis><parameter>nt pipe support</parameter> = yes +</emphasis> +</para> + +</listitem></varlistentry> +<varlistentry> +<indexterm significance="preferred"><primary>nt status support</primary></indexterm><term><anchor id="NTSTATUSSUPPORT"/>nt status support (G)</term><listitem> + <para>This boolean parameter controls whether <citerefentry><refentrytitle>smbd</refentrytitle> + <manvolnum>8</manvolnum></citerefentry> will negotiate NT specific status + support with Windows NT/2k/XP clients. This is a developer debugging option and should be left alone. + If this option is set to <constant>no</constant> then Samba offers + exactly the same DOS error codes that versions prior to Samba 2.2.3 + reported.</para> + + <para>You should not need to ever disable this parameter.</para> + +<para>Default: <emphasis><parameter>nt status support</parameter> = yes +</emphasis> +</para> + +</listitem></varlistentry> +<varlistentry> +<indexterm significance="preferred"><primary>null passwords</primary></indexterm><term><anchor id="NULLPASSWORDS"/>null passwords (G)</term><listitem> + <para>Allow or disallow client access to accounts that have null passwords. </para> + + <para>See also <citerefentry><refentrytitle>smbpasswd</refentrytitle> + <manvolnum>5</manvolnum></citerefentry>.</para> + +<para>Default: <emphasis><parameter>null passwords</parameter> = no +</emphasis> +</para> + +</listitem></varlistentry> +<varlistentry> +<indexterm significance="preferred"><primary>obey pam restrictions</primary></indexterm><term><anchor id="OBEYPAMRESTRICTIONS"/>obey pam restrictions (G)</term><listitem> + <para>When Samba 3.0 is configured to enable PAM support + (i.e. --with-pam), this parameter will control whether or not Samba + should obey PAM's account and session management directives. The + default behavior is to use PAM for clear text authentication only + and to ignore any account or session management. Note that Samba + always ignores PAM for authentication in the case of <link linkend="ENCRYPTPASSWORDS"> + <parameter moreinfo="none">encrypt passwords = yes</parameter></link>. The reason + is that PAM modules cannot support the challenge/response + authentication mechanism needed in the presence of SMB password encryption. +</para> + +<para>Default: <emphasis><parameter>obey pam restrictions</parameter> = no +</emphasis> +</para> + +</listitem></varlistentry> +<varlistentry> +<indexterm significance="preferred"><primary>only user</primary></indexterm><term><anchor id="ONLYUSER"/>only user (S)</term><listitem> + <para>This is a boolean option that controls whether + connections with usernames not in the <parameter moreinfo="none">user</parameter> + list will be allowed. By default this option is disabled so that a + client can supply a username to be used by the server. Enabling + this parameter will force the server to only use the login + names from the <parameter moreinfo="none">user</parameter> list and is only really + useful in <link linkend="SECURITYEQUALSSHARE">share level</link> + security.</para> + + <para>Note that this also means Samba won't try to deduce + usernames from the service name. This can be annoying for + the [homes] section. To get around this you could use <command moreinfo="none">user = + %S</command> which means your <parameter moreinfo="none">user</parameter> list + will be just the service name, which for home directories is the + name of the user.</para> + +<para>Default: <emphasis><parameter>only user</parameter> = no +</emphasis> +</para> + +</listitem></varlistentry> +<varlistentry> +<indexterm significance="preferred"><primary>oplock break wait time</primary></indexterm><term><anchor id="OPLOCKBREAKWAITTIME"/>oplock break wait time (G)</term><listitem> + <para>This is a tuning parameter added due to bugs in + both Windows 9x and WinNT. If Samba responds to a client too + quickly when that client issues an SMB that can cause an oplock + break request, then the network client can fail and not respond + to the break request. This tuning parameter (which is set in milliseconds) + is the amount of time Samba will wait before sending an oplock break + request to such (broken) clients.</para> + + <warning><para>DO NOT CHANGE THIS PARAMETER UNLESS YOU HAVE READ AND + UNDERSTOOD THE SAMBA OPLOCK CODE.</para></warning> - <varlistentry> - <term>%p</term> - <listitem><para>the path of the service's home directory, - obtained from your NIS auto.map entry. The NIS auto.map entry - is split up as <quote>%N:%p</quote>.</para></listitem> - </varlistentry> - </variablelist> +<para>Default: <emphasis><parameter>oplock break wait time</parameter> = 0 +</emphasis> +</para> + +</listitem></varlistentry> +<varlistentry> +<indexterm significance="preferred"><primary>oplock contention limit</primary></indexterm><term><anchor id="OPLOCKCONTENTIONLIMIT"/>oplock contention limit (S)</term><listitem> + <para>This is a <emphasis>very</emphasis> advanced + <citerefentry><refentrytitle>smbd</refentrytitle> + <manvolnum>8</manvolnum></citerefentry> tuning option to + improve the efficiency of the granting of oplocks under multiple + client contention for the same file.</para> + + <para>In brief it specifies a number, which causes <citerefentry><refentrytitle>smbd</refentrytitle> + <manvolnum>8</manvolnum></citerefentry>not to grant an oplock even when requested + if the approximate number of clients contending for an oplock on the same file goes over this + limit. This causes <command moreinfo="none">smbd</command> to behave in a similar + way to Windows NT.</para> + +<warning><para>DO NOT CHANGE THIS PARAMETER UNLESS YOU HAVE READ + AND UNDERSTOOD THE SAMBA OPLOCK CODE.</para></warning> + + +<para>Default: <emphasis><parameter>oplock contention limit</parameter> = 2 +</emphasis> +</para> + +</listitem></varlistentry> +<varlistentry> +<indexterm significance="preferred"><primary>oplocks</primary></indexterm><term><anchor id="OPLOCKS"/>oplocks (S)</term><listitem> + <para>This boolean option tells <command moreinfo="none">smbd</command> whether to + issue oplocks (opportunistic locks) to file open requests on this + share. The oplock code can dramatically (approx. 30% or more) improve + the speed of access to files on Samba servers. It allows the clients + to aggressively cache files locally and you may want to disable this + option for unreliable network environments (it is turned on by + default in Windows NT Servers). For more information see the file + <filename moreinfo="none">Speed.txt</filename> in the Samba <filename moreinfo="none">docs/</filename> + directory.</para> + + <para>Oplocks may be selectively turned off on certain files with a + share. See the <link linkend="VETOOPLOCKFILES"><parameter moreinfo="none"> + veto oplock files</parameter></link> parameter. On some systems + oplocks are recognized by the underlying operating system. This + allows data synchronization between all access to oplocked files, + whether it be via Samba or NFS or a local UNIX process. See the + <parameter moreinfo="none">kernel oplocks</parameter> parameter for details.</para> + +<para>Default: <emphasis><parameter>oplocks</parameter> = yes +</emphasis> +</para> + +</listitem></varlistentry> +<varlistentry> +<indexterm significance="preferred"><primary>os2 driver map</primary></indexterm><term><anchor id="OS2DRIVERMAP"/>os2 driver map (G)</term><listitem> + <para>The parameter is used to define the absolute + path to a file containing a mapping of Windows NT printer driver + names to OS/2 printer driver names. The format is:</para> + + <para><nt driver name> = <os2 driver name>.<device name></para> + + <para>For example, a valid entry using the HP LaserJet 5 + printer driver would appear as <command moreinfo="none">HP LaserJet 5L = LASERJET.HP + LaserJet 5L</command>.</para> + + <para>The need for the file is due to the printer driver namespace + problem described in <link linkend="printing"/>. For more details on OS/2 clients, please + refer to <link linkend="Other-Clients"/>.</para> + +<para>Default: <emphasis><parameter>os2 driver map</parameter> = +</emphasis> +</para> + +</listitem></varlistentry> +<varlistentry> +<indexterm significance="preferred"><primary>os level</primary></indexterm><term><anchor id="OSLEVEL"/>os level (G)</term><listitem> + <para>This integer value controls what level Samba + advertises itself as for browse elections. The value of this + parameter determines whether <citerefentry><refentrytitle>nmbd</refentrytitle> + <manvolnum>8</manvolnum></citerefentry> + has a chance of becoming a local master browser for the <parameter moreinfo="none"> + WORKGROUP</parameter> in the local broadcast area.</para> + + <para><emphasis>Note :</emphasis>By default, Samba will win + a local master browsing election over all Microsoft operating + systems except a Windows NT 4.0/2000 Domain Controller. This + means that a misconfigured Samba host can effectively isolate + a subnet for browsing purposes. See <filename moreinfo="none">BROWSING.txt + </filename> in the Samba <filename moreinfo="none">docs/</filename> directory + for details.</para> + +<para>Default: <emphasis><parameter>os level</parameter> = 20 +</emphasis> +</para> +<para>Example: <emphasis><parameter>os level</parameter> = 65 +</emphasis> +</para> +</listitem></varlistentry> +<varlistentry> +<indexterm significance="preferred"><primary>pam password change</primary></indexterm><term><anchor id="PAMPASSWORDCHANGE"/>pam password change (G)</term><listitem> + <para>With the addition of better PAM support in Samba 2.2, + this parameter, it is possible to use PAM's password change control + flag for Samba. If enabled, then PAM will be used for password + changes when requested by an SMB client instead of the program listed in + <link linkend="PASSWDPROGRAM"><parameter moreinfo="none">passwd program</parameter></link>. + It should be possible to enable this without changing your + <link linkend="PASSWDCHAT"><parameter moreinfo="none">passwd chat</parameter></link> + parameter for most setups.</para> + +<para>Default: <emphasis><parameter>pam password change</parameter> = no +</emphasis> +</para> + +</listitem></varlistentry> +<varlistentry> +<indexterm significance="preferred"><primary>panic action</primary></indexterm><term><anchor id="PANICACTION"/>panic action (G)</term><listitem> + <para>This is a Samba developer option that allows a + system command to be called when either <citerefentry><refentrytitle>smbd</refentrytitle> + <manvolnum>8</manvolnum></citerefentry> or <citerefentry><refentrytitle>smbd</refentrytitle> + <manvolnum>8</manvolnum></citerefentry> crashes. This is usually used to +draw attention to the fact that a problem occurred.</para> + +<para>Default: <emphasis><parameter>panic action</parameter> = +</emphasis> +</para> +<para>Example: <emphasis><parameter>panic action</parameter> = "/bin/sleep 90000" +</emphasis> +</para> +</listitem></varlistentry> +<varlistentry> +<indexterm significance="preferred"><primary>paranoid server security</primary></indexterm><term><anchor id="PARANOIDSERVERSECURITY"/>paranoid server security (G)</term><listitem> + <para>Some version of NT 4.x allow non-guest + users with a bad passowrd. When this option is enabled, samba will not + use a broken NT 4.x server as password server, but instead complain + to the logs and exit. + </para> + + <para>Disabling this option prevents Samba from making + this check, which involves deliberatly attempting a + bad logon to the remote server.</para> + +<para>Default: <emphasis><parameter>paranoid server security</parameter> = yes +</emphasis> +</para> + +</listitem></varlistentry> +<varlistentry> +<indexterm significance="preferred"><primary>passdb backend</primary></indexterm><term><anchor id="PASSDBBACKEND"/>passdb backend (G)</term><listitem> + + <para>This option allows the administrator to chose which backends + to retrieve and store passwords with. This allows (for example) both + smbpasswd and tdbsam to be used without a recompile. Multiple + backends can be specified, separated by spaces. The backends will be + searched in the order they are specified. New users are always added + to the first backend specified. </para> + + <para>This parameter is in two parts, the backend's name, and a 'location' + string that has meaning only to that particular backed. These are separated + by a : character.</para> + + <para>Available backends can include: + <itemizedlist> + <listitem> + <para><command moreinfo="none">smbpasswd</command> - The default smbpasswd + backend. Takes a path to the smbpasswd file as an optional argument. + </para> + </listitem> + + <listitem> + <para><command moreinfo="none">tdbsam</command> - The TDB based password storage + backend. Takes a path to the TDB as an optional argument (defaults to passdb.tdb + in the <link linkend="PRIVATEDIR"> + <parameter moreinfo="none">private dir</parameter></link> directory.</para> + </listitem> + + <listitem> + <para><command moreinfo="none">ldapsam</command> - The LDAP based passdb + backend. Takes an LDAP URL as an optional argument (defaults to + <command moreinfo="none">ldap://localhost</command>)</para> + + <para>LDAP connections should be secured where possible. This may be done using either + Start-TLS (see <link linkend="LDAPSSL"><parameter moreinfo="none">ldap ssl</parameter></link>) or by + specifying <parameter moreinfo="none">ldaps://</parameter> in + the URL argument. </para> + + <para>Multiple servers may also be specified in double-quotes, if your + LDAP libraries supports the LDAP URL notation. + (OpenLDAP does). + </para> + + </listitem> + + <listitem> + <para><command moreinfo="none">nisplussam</command> - + The NIS+ based passdb backend. Takes name NIS domain as + an optional argument. Only works with sun NIS+ servers. + </para> + </listitem> + + <listitem> + <para><command moreinfo="none">mysql</command> - + The MySQL based passdb backend. Takes an identifier as + argument. Read the Samba HOWTO Collection for configuration + details. + </para></listitem> + + </itemizedlist> + </para> + +<para>Default: <emphasis><parameter>passdb backend</parameter> = smbpasswd +</emphasis> +</para> +<para>Example: <emphasis><parameter>passdb backend</parameter> = tdbsam:/etc/samba/private/passdb.tdb smbpasswd:/etc/samba/smbpasswd +</emphasis> +</para><para>Example: <emphasis><parameter>passdb backend</parameter> = ldapsam:ldaps://ldap.example.com +</emphasis> +</para><para>Example: <emphasis><parameter>passdb backend</parameter> = ldapsam:"ldap://ldap-1.example.com ldap://ldap-2.example.com" +</emphasis> +</para><para>Example: <emphasis><parameter>passdb backend</parameter> = mysql:my_plugin_args tdbsam +</emphasis> +</para> +</listitem></varlistentry> +<varlistentry> +<indexterm significance="preferred"><primary>passwd chat</primary></indexterm><term><anchor id="PASSWDCHAT"/>passwd chat (G)</term><listitem> + <para>This string controls the <emphasis>"chat"</emphasis> + conversation that takes places between <citerefentry><refentrytitle>smbd</refentrytitle> + <manvolnum>8</manvolnum></citerefentry> and the local password changing + program to change the user's password. The string describes a + sequence of response-receive pairs that <citerefentry><refentrytitle>smbd</refentrytitle> + <manvolnum>8</manvolnum></citerefentry> uses to determine what to send to the + <link linkend="PASSWDPROGRAM"><parameter moreinfo="none">passwd program</parameter> + </link> and what to expect back. If the expected output is not + received then the password is not changed.</para> + + <para>This chat sequence is often quite site specific, depending + on what local methods are used for password control (such as NIS + etc).</para> + + <para>Note that this parameter only is only used if the <link linkend="UNIXPASSWORDSYNC"> <parameter moreinfo="none">unix password sync</parameter> + </link> parameter is set to <constant>yes</constant>. This sequence is + then called <emphasis>AS ROOT</emphasis> when the SMB password in the + smbpasswd file is being changed, without access to the old password + cleartext. This means that root must be able to reset the user's password without + knowing the text of the previous password. In the presence of + NIS/YP, this means that the <link linkend="PASSWDPROGRAM">passwd program</link> must + be executed on the NIS master. + </para> + + + <para>The string can contain the macro <parameter moreinfo="none">%n</parameter> which is substituted + for the new password. The chat sequence can also contain the standard + macros \n, \r, \t and \s to + give line-feed, carriage-return, tab and space. The chat sequence string can also contain + a '*' which matches any sequence of characters. Double quotes can be used to collect strings with spaces + in them into a single string.</para> + + <para>If the send string in any part of the chat sequence is a full + stop ".", then no string is sent. Similarly, if the + expect string is a full stop then no string is expected.</para> + + <para>If the <link linkend="PAMPASSWORDCHANGE"><parameter moreinfo="none">pam + password change</parameter></link> parameter is set to <constant>yes</constant>, the chat pairs + may be matched in any order, and success is determined by the PAM result, + not any particular output. The \n macro is ignored for PAM conversions. + </para> + + +<para>Default: <emphasis><parameter>passwd chat</parameter> = *new*password* %n\n*new*password* %n\n *changed* +</emphasis> +</para> +<para>Example: <emphasis><parameter>passwd chat</parameter> = "*Enter OLD password*" %o\n "*Enter NEW password*" %n\n "*Reenter NEW password*" %n\n "*Password changed*" +</emphasis> +</para> +</listitem></varlistentry> +<varlistentry> +<indexterm significance="preferred"><primary>passwd chat debug</primary></indexterm><term><anchor id="PASSWDCHATDEBUG"/>passwd chat debug (G)</term><listitem> + <para>This boolean specifies if the passwd chat script + parameter is run in <emphasis>debug</emphasis> mode. In this mode the + strings passed to and received from the passwd chat are printed + in the <citerefentry><refentrytitle>smbd</refentrytitle> + <manvolnum>8</manvolnum></citerefentry> log with a + <link linkend="DEBUGLEVEL"><parameter moreinfo="none">debug level</parameter></link> + of 100. This is a dangerous option as it will allow plaintext passwords + to be seen in the <command moreinfo="none">smbd</command> log. It is available to help + Samba admins debug their <parameter moreinfo="none">passwd chat</parameter> scripts + when calling the <parameter moreinfo="none">passwd program</parameter> and should + be turned off after this has been done. This option has no effect if the + <link linkend="PAMPASSWORDCHANGE"><parameter moreinfo="none">pam password change</parameter></link> + paramter is set. This parameter is off by default.</para> + +<para>Default: <emphasis><parameter>passwd chat debug</parameter> = no +</emphasis> +</para> + +</listitem></varlistentry> +<varlistentry> +<indexterm significance="preferred"><primary>passwd chat timeout</primary></indexterm><term><anchor id="PASSWDCHATTIMEOUT"/>passwd chat timeout (G)</term><listitem> + <para>This integer specifies the number of seconds smbd will wait for an initial + answer from a passwd chat script being run. Once the initial answer is received + the subsequent answers must be received in one tenth of this time. The default it + two seconds.</para> + +<para>Default: <emphasis><parameter>passwd chat timeout</parameter> = 2 +</emphasis> +</para> + +</listitem></varlistentry> +<varlistentry> +<indexterm significance="preferred"><primary>passwd program</primary></indexterm><term><anchor id="PASSWDPROGRAM"/>passwd program (G)</term><listitem> + <para>The name of a program that can be used to set + UNIX user passwords. Any occurrences of <parameter moreinfo="none">%u</parameter> + will be replaced with the user name. The user name is checked for + existence before calling the password changing program.</para> + + <para>Also note that many passwd programs insist in <emphasis>reasonable + </emphasis> passwords, such as a minimum length, or the inclusion + of mixed case chars and digits. This can pose a problem as some clients + (such as Windows for Workgroups) uppercase the password before sending + it.</para> + + <para><emphasis>Note</emphasis> that if the <parameter moreinfo="none">unix + password sync</parameter> parameter is set to <constant>yes + </constant> then this program is called <emphasis>AS ROOT</emphasis> + before the SMB password in the smbpasswd + file is changed. If this UNIX password change fails, then + <command moreinfo="none">smbd</command> will fail to change the SMB password also + (this is by design).</para> + + <para>If the <parameter moreinfo="none">unix password sync</parameter> parameter + is set this parameter <emphasis>MUST USE ABSOLUTE PATHS</emphasis> + for <emphasis>ALL</emphasis> programs called, and must be examined + for security implications. Note that by default <parameter moreinfo="none">unix + password sync</parameter> is set to <constant>no</constant>.</para> - <para>There are some quite creative things that can be done - with these substitutions and other <filename moreinfo="none">smb.conf</filename> options.</para> -</refsect1> +<para>Default: <emphasis><parameter>passwd program</parameter> = +</emphasis> +</para> +<para>Example: <emphasis><parameter>passwd program</parameter> = /bin/passwd %u +</emphasis> +</para> +</listitem></varlistentry> +<varlistentry> +<indexterm significance="preferred"><primary>password level</primary></indexterm><term><anchor id="PASSWORDLEVEL"/>password level (G)</term><listitem> + <para>Some client/server combinations have difficulty + with mixed-case passwords. One offending client is Windows for + Workgroups, which for some reason forces passwords to upper + case when using the LANMAN1 protocol, but leaves them alone when + using COREPLUS! Another problem child is the Windows 95/98 + family of operating systems. These clients upper case clear + text passwords even when NT LM 0.12 selected by the protocol + negotiation request/response.</para> + + <para>This parameter defines the maximum number of characters + that may be upper case in passwords.</para> + + <para>For example, say the password given was "FRED". If <parameter moreinfo="none"> + password level</parameter> is set to 1, the following combinations + would be tried if "FRED" failed:</para> + + <para>"Fred", "fred", "fRed", "frEd","freD"</para> + + <para>If <parameter moreinfo="none">password level</parameter> was set to 2, + the following combinations would also be tried: </para> + + <para>"FRed", "FrEd", "FreD", "fREd", "fReD", "frED", ..</para> + + <para>And so on.</para> + + <para>The higher value this parameter is set to the more likely + it is that a mixed case password will be matched against a single + case password. However, you should be aware that use of this + parameter reduces security and increases the time taken to + process a new connection.</para> + + <para>A value of zero will cause only two attempts to be + made - the password as is and the password in all-lower case.</para> + + <para>This parameter is used only when using plain-text passwords. It is + not at all used when encrypted passwords as in use (that is the default + since samba-3.0.0). Use this only when <link linkend="ENCRYPTPASSWORDS"> + encrypt passwords = No</link>.</para> + +<para>Default: <emphasis><parameter>password level</parameter> = 0 +</emphasis> +</para> +<para>Example: <emphasis><parameter>password level</parameter> = 4 +</emphasis> +</para> +</listitem></varlistentry> +<varlistentry> +<indexterm significance="preferred"><primary>password server</primary></indexterm><term><anchor id="PASSWORDSERVER"/>password server (G)</term><listitem> + <para>By specifying the name of another SMB server + or Active Directory domain controller with this option, + and using <command moreinfo="none">security = [ads|domain|server]</command> + it is possible to get Samba to + to do all its username/password validation using a specific remote server.</para> + + <para>This option sets the name or IP address of the password server to use. + New syntax has been added to support defining the port to use when connecting + to the server the case of an ADS realm. To define a port other than the + default LDAP port of 389, add the port number using a colon after the + name or IP address (e.g. 192.168.1.100:389). If you do not specify a port, + Samba will use the standard LDAP port of tcp/389. Note that port numbers + have no effect on password servers for Windows NT 4.0 domains or netbios + connections.</para> + + <para>If parameter is a name, it is looked up using the + parameter <link linkend="NAMERESOLVEORDER"><parameter moreinfo="none">name + resolve order</parameter></link> and so may resolved + by any method and order described in that parameter.</para> + + <para>The password server must be a machine capable of using + the "LM1.2X002" or the "NT LM 0.12" protocol, and it must be in + user level security mode.</para> + + <note><para>Using a password server means your UNIX box (running + Samba) is only as secure as your password server. <emphasis>DO NOT + CHOOSE A PASSWORD SERVER THAT YOU DON'T COMPLETELY TRUST</emphasis>. + </para></note> + + <para>Never point a Samba server at itself for password serving. + This will cause a loop and could lock up your Samba server!</para> + + <para>The name of the password server takes the standard + substitutions, but probably the only useful one is <parameter moreinfo="none">%m + </parameter>, which means the Samba server will use the incoming + client as the password server. If you use this then you better + trust your clients, and you had better restrict them with hosts allow!</para> + + <para>If the <parameter moreinfo="none">security</parameter> parameter is set to + <constant>domain</constant> or <constant>ads</constant>, then the list of machines in this + option must be a list of Primary or Backup Domain controllers for the + Domain or the character '*', as the Samba server is effectively + in that domain, and will use cryptographically authenticated RPC calls + to authenticate the user logging on. The advantage of using <command moreinfo="none"> + security = domain</command> is that if you list several hosts in the + <parameter moreinfo="none">password server</parameter> option then <command moreinfo="none">smbd + </command> will try each in turn till it finds one that responds. This + is useful in case your primary server goes down.</para> + + <para>If the <parameter moreinfo="none">password server</parameter> option is set + to the character '*', then Samba will attempt to auto-locate the + Primary or Backup Domain controllers to authenticate against by + doing a query for the name <constant>WORKGROUP<1C></constant> + and then contacting each server returned in the list of IP + addresses from the name resolution source. </para> + + <para>If the list of servers contains both names/IP's and the '*' + character, the list is treated as a list of preferred + domain controllers, but an auto lookup of all remaining DC's + will be added to the list as well. Samba will not attempt to optimize + this list by locating the closest DC.</para> + + <para>If the <parameter moreinfo="none">security</parameter> parameter is + set to <constant>server</constant>, then there are different + restrictions that <command moreinfo="none">security = domain</command> doesn't + suffer from:</para> + + <itemizedlist> + <listitem> + <para>You may list several password servers in + the <parameter moreinfo="none">password server</parameter> parameter, however if an + <command moreinfo="none">smbd</command> makes a connection to a password server, + and then the password server fails, no more users will be able + to be authenticated from this <command moreinfo="none">smbd</command>. This is a + restriction of the SMB/CIFS protocol when in <command moreinfo="none">security = server + </command> mode and cannot be fixed in Samba.</para> + </listitem> + + <listitem> + <para>If you are using a Windows NT server as your + password server then you will have to ensure that your users + are able to login from the Samba server, as when in <command moreinfo="none"> + security = server</command> mode the network logon will appear to + come from there rather than from the users workstation.</para> + </listitem> + </itemizedlist> -<refsect1 id="NAMEMANGLINGSECT"> - <title>NAME MANGLING</title> +<para>Default: <emphasis><parameter>password server</parameter> = +</emphasis> +</para> +<para>Example: <emphasis><parameter>password server</parameter> = NT-PDC, NT-BDC1, NT-BDC2, * +</emphasis> +</para><para>Example: <emphasis><parameter>password server</parameter> = windc.mydomain.com:389 192.168.1.101 * +</emphasis> +</para><para>Example: <emphasis><parameter>password server</parameter> = * +</emphasis> +</para> +</listitem></varlistentry> +<varlistentry> +<indexterm significance="preferred"><primary>directory</primary><see>path</see></indexterm><term><anchor id="DIRECTORY"/>directory</term><listitem><para>This parameter is a synonym for path.</para></listitem></varlistentry><varlistentry> +<indexterm significance="preferred"><primary>path</primary></indexterm><term><anchor id="PATH"/>path (S)</term><listitem> + <para>This parameter specifies a directory to which + the user of the service is to be given access. In the case of + printable services, this is where print data will spool prior to + being submitted to the host for printing.</para> + + <para>For a printable service offering guest access, the service + should be readonly and the path should be world-writeable and + have the sticky bit set. This is not mandatory of course, but + you probably won't get the results you expect if you do + otherwise.</para> + + <para>Any occurrences of <parameter moreinfo="none">%u</parameter> in the path + will be replaced with the UNIX username that the client is using + on this connection. Any occurrences of <parameter moreinfo="none">%m</parameter> + will be replaced by the NetBIOS name of the machine they are + connecting from. These replacements are very useful for setting + up pseudo home directories for users.</para> + + <para>Note that this path will be based on <link linkend="ROOTDIR"> + <parameter moreinfo="none">root dir</parameter></link> if one was specified.</para> - <para>Samba supports <quote>name mangling</quote> so that DOS and - Windows clients can use files that don't conform to the 8.3 format. - It can also be set to adjust the case of 8.3 format filenames.</para> +<para>Default: <emphasis><parameter>path</parameter> = +</emphasis> +</para> +<para>Example: <emphasis><parameter>path</parameter> = /home/fred +</emphasis> +</para> +</listitem></varlistentry> +<varlistentry> +<indexterm significance="preferred"><primary>pid directory</primary></indexterm><term><anchor id="PIDDIRECTORY"/>pid directory (G)</term><listitem> + <para>This option specifies the directory where pid + files will be placed. </para> + +<para>Default: <emphasis><parameter>pid directory</parameter> = ${prefix}/var/locks +</emphasis> +</para> +<para>Example: <emphasis><parameter>pid directory</parameter> = pid directory = /var/run/ +</emphasis> +</para> +</listitem></varlistentry> +<varlistentry> +<indexterm significance="preferred"><primary>posix locking</primary></indexterm><term><anchor id="POSIXLOCKING"/>posix locking (S)</term><listitem> + <para>The <citerefentry><refentrytitle>smbd</refentrytitle> + <manvolnum>8</manvolnum></citerefentry> + daemon maintains an database of file locks obtained by SMB clients. + The default behavior is to map this internal database to POSIX + locks. This means that file locks obtained by SMB clients are + consistent with those seen by POSIX compliant applications accessing + the files via a non-SMB method (e.g. NFS or local file access). + You should never need to disable this parameter.</para> + +<para>Default: <emphasis><parameter>posix locking</parameter> = yes +</emphasis> +</para> + +</listitem></varlistentry> +<varlistentry> +<indexterm significance="preferred"><primary>postexec</primary></indexterm><term><anchor id="POSTEXEC"/>postexec (S)</term><listitem> + <para>This option specifies a command to be run + whenever the service is disconnected. It takes the usual + substitutions. The command may be run as the root on some + systems.</para> + + <para>An interesting example may be to unmount server + resources:</para> + +<para><command moreinfo="none">postexec = /etc/umount /cdrom</command></para> + +<para>Default: <emphasis><parameter>postexec</parameter> = +</emphasis> +</para> +<para>Example: <emphasis><parameter>postexec</parameter> = echo \"%u disconnected from %S from %m (%I)\" >> /tmp/log +</emphasis> +</para> +</listitem></varlistentry> +<varlistentry> +<indexterm significance="preferred"><primary>exec</primary><see>preexec</see></indexterm><term><anchor id="EXEC"/>exec</term><listitem><para>This parameter is a synonym for preexec.</para></listitem></varlistentry><varlistentry> +<indexterm significance="preferred"><primary>preexec</primary></indexterm><term><anchor id="PREEXEC"/>preexec (S)</term><listitem> + <para>This option specifies a command to be run whenever + the service is connected to. It takes the usual substitutions.</para> + + <para>An interesting example is to send the users a welcome + message every time they log in. Maybe a message of the day? Here + is an example:</para> + + <para><command moreinfo="none">preexec = csh -c 'echo \"Welcome to %S!\" | /usr/local/samba/bin/smbclient -M %m -I %I' & </command></para> + + <para>Of course, this could get annoying after a while :-)</para> + + <para>See also <link linkend="PREEXECCLOSE"><parameter moreinfo="none">preexec close</parameter></link> and <link linkend="POSTEXEC"><parameter moreinfo="none">postexec + </parameter></link>.</para> + +<para>Default: <emphasis><parameter>preexec</parameter> = +</emphasis> +</para> +<para>Example: <emphasis><parameter>preexec</parameter> = echo \"%u connected to %S from %m (%I)\" >> /tmp/log +</emphasis> +</para> +</listitem></varlistentry> +<varlistentry> +<indexterm significance="preferred"><primary>preexec close</primary></indexterm><term><anchor id="PREEXECCLOSE"/>preexec close (S)</term><listitem> + <para>This boolean option controls whether a non-zero + return code from <link linkend="PREEXEC"><parameter moreinfo="none">preexec +</parameter></link> should close the service being connected to.</para> + +<para>Default: <emphasis><parameter>preexec close</parameter> = no +</emphasis> +</para> + +</listitem></varlistentry> +<varlistentry> +<indexterm significance="preferred"><primary>prefered master</primary><see>preferred master</see></indexterm><term><anchor id="PREFEREDMASTER"/>prefered master</term><listitem><para>This parameter is a synonym for preferred master.</para></listitem></varlistentry><varlistentry> +<indexterm significance="preferred"><primary>preferred master</primary></indexterm><term><anchor id="PREFERREDMASTER"/>preferred master (G)</term><listitem> + <para>This boolean parameter controls if + <citerefentry><refentrytitle>nmbd</refentrytitle> + <manvolnum>8</manvolnum></citerefentry> is a preferred master + browser for its workgroup.</para> + + <para>If this is set to <constant>yes</constant>, on startup, <command moreinfo="none">nmbd</command> + will force an election, and it will have a slight advantage in + winning the election. It is recommended that this parameter is + used in conjunction with <command moreinfo="none"><link linkend="DOMAINMASTER"> + <parameter moreinfo="none">domain master</parameter></link> = yes</command>, so + that <command moreinfo="none">nmbd</command> can guarantee becoming a domain master.</para> + + <para>Use this option with caution, because if there are several + hosts (whether Samba servers, Windows 95 or NT) that are + preferred master browsers on the same subnet, they will each + periodically and continuously attempt to become the local + master browser. This will result in unnecessary broadcast + traffic and reduced browsing capabilities.</para> + +<para>Default: <emphasis><parameter>preferred master</parameter> = auto +</emphasis> +</para> - <para>There are several options that control the way mangling is - performed, and they are grouped here rather than listed separately. - For the defaults look at the output of the testparm program. </para> +</listitem></varlistentry> +<varlistentry> +<indexterm significance="preferred"><primary>auto services</primary><see>preload</see></indexterm><term><anchor id="AUTOSERVICES"/>auto services</term><listitem><para>This parameter is a synonym for preload.</para></listitem></varlistentry><varlistentry> +<indexterm significance="preferred"><primary>preload</primary></indexterm><term><anchor id="PRELOAD"/>preload (G)</term><listitem> + <para>This is a list of services that you want to be + automatically added to the browse lists. This is most useful + for homes and printers services that would otherwise not be + visible.</para> - <para>All of these options can be set separately for each service - (or globally, of course). </para> + <para>Note that if you just want all printers in your + printcap file loaded then the <link linkend="LOADPRINTERS"> + <parameter moreinfo="none">load printers</parameter></link> option is easier.</para> - <para>The options are: </para> +<para>Default: <emphasis><parameter>preload</parameter> = +</emphasis> +</para> +<para>Example: <emphasis><parameter>preload</parameter> = fred lp colorlp +</emphasis> +</para> +</listitem></varlistentry> +<varlistentry> +<indexterm significance="preferred"><primary>preload modules</primary></indexterm><term><anchor id="PRELOADMODULES"/>preload modules (G)</term><listitem> + <para>This is a list of paths to modules that should + be loaded into smbd before a client connects. This improves + the speed of smbd when reacting to new connections somewhat. </para> + +<para>Default: <emphasis><parameter>preload modules</parameter> = +</emphasis> +</para> +<para>Example: <emphasis><parameter>preload modules</parameter> = /usr/lib/samba/passdb/mysql.so +</emphasis> +</para> +</listitem></varlistentry> +<varlistentry> +<indexterm significance="preferred"><primary>preserve case</primary></indexterm><term><anchor id="PRESERVECASE"/>preserve case (S)</term><listitem> + <para> This controls if new filenames are created + with the case that the client passes, or if they are forced to + be the <link linkend="DEFAULTCASE"><parameter moreinfo="none">default case + </parameter></link>.</para> + <para>See the section on <link linkend="NAMEMANGLINGSECT">NAME MANGLING</link> for a fuller discussion.</para> + +<para>Default: <emphasis><parameter>preserve case</parameter> = yes +</emphasis> +</para> + +</listitem></varlistentry> +<varlistentry> +<indexterm significance="preferred"><primary>print ok</primary><see>printable</see></indexterm><term><anchor id="PRINTOK"/>print ok</term><listitem><para>This parameter is a synonym for printable.</para></listitem></varlistentry><varlistentry> +<indexterm significance="preferred"><primary>printable</primary></indexterm><term><anchor id="PRINTABLE"/>printable (S)</term><listitem> + <para>If this parameter is <constant>yes</constant>, then + clients may open, write to and submit spool files on the directory + specified for the service. </para> + + <para>Note that a printable service will ALWAYS allow writing + to the service path (user privileges permitting) via the spooling + of print data. The <link linkend="READONLY"><parameter moreinfo="none">read only + </parameter></link> parameter controls only non-printing access to + the resource.</para> + +<para>Default: <emphasis><parameter>printable</parameter> = no +</emphasis> +</para> + +</listitem></varlistentry> +<varlistentry> +<indexterm significance="preferred"><primary>printcap cache time</primary></indexterm><term><anchor id="PRINTCAPCACHETIME"/>printcap cache time (G)</term><listitem> + <para>This option specifies the number of seconds before the printing + subsystem is again asked for the known printers. If the value + is greater than 60 the initial waiting time is set to 60 seconds + to allow an earlier first rescan of the printing subsystem. + </para> + + <para>Setting this parameter to 0 (the default) disables any + rescanning for new or removed printers after the initial startup. + </para> + +<para>Default: <emphasis><parameter>printcap cache time</parameter> = 0 +</emphasis> +</para> +<para>Example: <emphasis><parameter>printcap cache time</parameter> = 600 +</emphasis> +</para> +</listitem></varlistentry> +<varlistentry> +<indexterm significance="preferred"><primary>printcap</primary><see>printcap name</see></indexterm><term><anchor id="PRINTCAP"/>printcap</term><listitem><para>This parameter is a synonym for printcap name.</para></listitem></varlistentry><varlistentry> +<indexterm significance="preferred"><primary>printcap name</primary></indexterm><term><anchor id="PRINTCAPNAME"/>printcap name (S)</term><listitem> + <para>This parameter may be used to override the + compiled-in default printcap name used by the server (usually <filename moreinfo="none"> + /etc/printcap</filename>). See the discussion of the <link linkend="PRINTERSSECT">[printers]</link> section above for reasons + why you might want to do this.</para> + + <para>To use the CUPS printing interface set <command moreinfo="none">printcap name = cups + </command>. This should be supplemented by an addtional setting + <link linkend="PRINTING">printing = cups</link> in the [global] + section. <command moreinfo="none">printcap name = cups</command> will use the + "dummy" printcap created by CUPS, as specified in your CUPS + configuration file. + </para> + + <para>On System V systems that use <command moreinfo="none">lpstat</command> to + list available printers you can use <command moreinfo="none">printcap name = lpstat + </command> to automatically obtain lists of available printers. This + is the default for systems that define SYSV at configure time in + Samba (this includes most System V based systems). If <parameter moreinfo="none"> + printcap name</parameter> is set to <command moreinfo="none">lpstat</command> on + these systems then Samba will launch <command moreinfo="none">lpstat -v</command> and + attempt to parse the output to obtain a printer list.</para> + + <para>A minimal printcap file would look something like this:</para> + +<para><programlisting format="linespecific"> +print1|My Printer 1 +print2|My Printer 2 +print3|My Printer 3 +print4|My Printer 4 +print5|My Printer 5 +</programlisting></para> - <variablelist> + <para>where the '|' separates aliases of a printer. The fact + that the second alias has a space in it gives a hint to Samba + that it's a comment.</para> + + <note><para>Under AIX the default printcap + name is <filename moreinfo="none">/etc/qconfig</filename>. Samba will assume the + file is in AIX <filename moreinfo="none">qconfig</filename> format if the string + <filename moreinfo="none">qconfig</filename> appears in the printcap filename.</para></note> - <varlistentry> - <term>case sensitive = yes/no/auto</term> - <listitem><para>controls whether filenames are case sensitive. If - they aren't, Samba must do a filename search and match on passed - names. The default setting of auto allows clients that support case - sensitive filenames (Linux CIFSVFS and smbclient 3.0.5 and above currently) - to tell the Samba server on a per-packet basis that they wish to access - the file system in a case-sensitive manner (to support UNIX case sensitive - semantics). No Windows or DOS system supports case-sensitive filename so - setting this option to auto is that same as setting it to no for them. - Default <emphasis>auto</emphasis>.</para></listitem> - </varlistentry> - - <varlistentry> - <term>default case = upper/lower</term> - <listitem><para>controls what the default case is for new - filenames. Default <emphasis>lower</emphasis>.</para></listitem> - </varlistentry> +<para>Default: <emphasis><parameter>printcap name</parameter> = /etc/printcap +</emphasis> +</para> +<para>Example: <emphasis><parameter>printcap name</parameter> = /etc/myprintcap +</emphasis> +</para> +</listitem></varlistentry> +<varlistentry> +<indexterm significance="preferred"><primary>print command</primary></indexterm><term><anchor id="PRINTCOMMAND"/>print command (S)</term><listitem> + <para>After a print job has finished spooling to + a service, this command will be used via a <command moreinfo="none">system()</command> + call to process the spool file. Typically the command specified will + submit the spool file to the host's printing subsystem, but there + is no requirement that this be the case. The server will not remove + the spool file, so whatever command you specify should remove the + spool file when it has been processed, otherwise you will need to + manually remove old spool files.</para> + + <para>The print command is simply a text string. It will be used + verbatim after macro substitutions have been made:</para> + + <para>%s, %f - the path to the spool + file name</para> + + <para>%p - the appropriate printer + name</para> + + <para>%J - the job + name as transmitted by the client.</para> + + <para>%c - The number of printed pages + of the spooled job (if known).</para> + + <para>%z - the size of the spooled + print job (in bytes)</para> + + <para>The print command <emphasis>MUST</emphasis> contain at least + one occurrence of <parameter moreinfo="none">%s</parameter> or <parameter moreinfo="none">%f + </parameter> - the <parameter moreinfo="none">%p</parameter> is optional. At the time + a job is submitted, if no printer name is supplied the <parameter moreinfo="none">%p + </parameter> will be silently removed from the printer command.</para> + + <para>If specified in the [global] section, the print command given + will be used for any printable service that does not have its own + print command specified.</para> + + <para>If there is neither a specified print command for a + printable service nor a global print command, spool files will + be created but not processed and (most importantly) not removed.</para> + + <para>Note that printing may fail on some UNIXes from the + <constant>nobody</constant> account. If this happens then create + an alternative guest account that can print and set the <link linkend="GUESTACCOUNT"> + <parameter moreinfo="none">guest account</parameter></link> + in the [global] section.</para> + + <para>You can form quite complex print commands by realizing + that they are just passed to a shell. For example the following + will log a print job, print the file, then remove it. Note that + ';' is the usual separator for command in shell scripts.</para> + + <para><command moreinfo="none">print command = echo Printing %s >> + /tmp/print.log; lpr -P %p %s; rm %s</command></para> + + <para>You may have to vary this command considerably depending + on how you normally print files on your system. The default for + the parameter varies depending on the setting of the <link linkend="PRINTING"> + <parameter moreinfo="none">printing</parameter></link> parameter.</para> + + <para>Default: For <command moreinfo="none">printing = BSD, AIX, QNX, LPRNG + or PLP :</command></para> + <para><command moreinfo="none">print command = lpr -r -P%p %s</command></para> + + <para>For <command moreinfo="none">printing = SYSV or HPUX :</command></para> + <para><command moreinfo="none">print command = lp -c -d%p %s; rm %s</command></para> + + <para>For <command moreinfo="none">printing = SOFTQ :</command></para> + <para><command moreinfo="none">print command = lp -d%p -s %s; rm %s</command></para> + + <para>For printing = CUPS : If SAMBA is compiled against + libcups, then <link linkend="PRINTING">printcap = cups</link> + uses the CUPS API to + submit jobs, etc. Otherwise it maps to the System V + commands with the -oraw option for printing, i.e. it + uses <command moreinfo="none">lp -c -d%p -oraw; rm %s</command>. + With <command moreinfo="none">printing = cups</command>, + and if SAMBA is compiled against libcups, any manually + set print command will be ignored.</para> + +<para><emphasis>No default</emphasis></para> +<para>Example: <emphasis><parameter>print command</parameter> = /usr/local/samba/bin/myprintscript %p %s +</emphasis> +</para> +</listitem></varlistentry> +<varlistentry> +<indexterm significance="preferred"><primary>printer admin</primary></indexterm><term><anchor id="PRINTERADMIN"/>printer admin (S)</term><listitem> + <para> + This lists users who can do anything to printers + via the remote administration interfaces offered + by MS-RPC (usually using a NT workstation). + This parameter can be set per-share or globally. + Note: The root user always has admin rights. Use + caution with use in the global stanza as this can + cause side effects. + </para> + +<para>Default: <emphasis><parameter>printer admin</parameter> = +</emphasis> +</para> +<para>Example: <emphasis><parameter>printer admin</parameter> = admin, @staff +</emphasis> +</para> +</listitem></varlistentry> +<varlistentry> +<indexterm significance="preferred"><primary>printer</primary><see>printer name</see></indexterm><term><anchor id="PRINTER"/>printer</term><listitem><para>This parameter is a synonym for printer name.</para></listitem></varlistentry><varlistentry> +<indexterm significance="preferred"><primary>printer name</primary></indexterm><term><anchor id="PRINTERNAME"/>printer name (S)</term><listitem> + <para>This parameter specifies the name of the printer + to which print jobs spooled through a printable service will be sent.</para> + + <para>If specified in the [global] section, the printer + name given will be used for any printable service that does + not have its own printer name specified.</para> + +<para>Default: <emphasis><parameter>printer name</parameter> = +# none (but may be <constant>lp</constant> on many systems) +</emphasis> +</para> +<para>Example: <emphasis><parameter>printer name</parameter> = laserwriter +</emphasis> +</para> +</listitem></varlistentry> +<varlistentry> +<indexterm significance="preferred"><primary>printing</primary></indexterm><term><anchor id="PRINTING"/>printing (S)</term><listitem> + <para>This parameters controls how printer status information is + interpreted on your system. It also affects the default values for + the <parameter moreinfo="none">print command</parameter>, <parameter moreinfo="none">lpq command</parameter>, <parameter moreinfo="none">lppause command </parameter>, <parameter moreinfo="none">lpresume command</parameter>, and <parameter moreinfo="none">lprm command</parameter> if specified in the + [global] section.</para> + + <para>Currently nine printing styles are supported. They are + <constant>BSD</constant>, <constant>AIX</constant>, + <constant>LPRNG</constant>, <constant>PLP</constant>, + <constant>SYSV</constant>, <constant>HPUX</constant>, + <constant>QNX</constant>, <constant>SOFTQ</constant>, + and <constant>CUPS</constant>.</para> + + <para>To see what the defaults are for the other print + commands when using the various options use the <citerefentry><refentrytitle>testparm</refentrytitle> + <manvolnum>1</manvolnum></citerefentry> program.</para> + + <para>This option can be set on a per printer basis. Please be + aware however, that you must place any of the various printing + commands (e.g. print command, lpq command, etc...) after defining + the value for the <parameter>printing</parameter> option since it will + reset the printing commands to default values.</para> + + <para>See also the discussion in the <link linkend="PRINTERSSECT"> + [printers]</link> section.</para> + +<para><emphasis>No default</emphasis></para> + +</listitem></varlistentry> +<varlistentry> +<indexterm significance="preferred"><primary>private dir</primary></indexterm><term><anchor id="PRIVATEDIR"/>private dir (G)</term><listitem> + <para>This parameters defines the directory + smbd will use for storing such files as <filename moreinfo="none">smbpasswd</filename> + and <filename moreinfo="none">secrets.tdb</filename>. +</para> + +<para>Default: <emphasis><parameter>private dir</parameter> = ${prefix}/private +</emphasis> +</para> + +</listitem></varlistentry> +<varlistentry> +<indexterm significance="preferred"><primary>profile acls</primary></indexterm><term><anchor id="PROFILEACLS"/>profile acls (S)</term><listitem> + <para> + This boolean parameter was added to fix the problems that people have been + having with storing user profiles on Samba shares from Windows 2000 or + Windows XP clients. New versions of Windows 2000 or Windows XP service + packs do security ACL checking on the owner and ability to write of the + profile directory stored on a local workstation when copied from a Samba + share. +</para> + +<para>When not in domain mode with winbindd then the security info copied + onto the local workstation has no meaning to the logged in user (SID) on + that workstation so the profile storing fails. Adding this parameter + onto a share used for profile storage changes two things about the + returned Windows ACL. Firstly it changes the owner and group owner + of all reported files and directories to be BUILTIN\\Administrators, + BUILTIN\\Users respectively (SIDs S-1-5-32-544, S-1-5-32-545). Secondly + it adds an ACE entry of "Full Control" to the SID BUILTIN\\Users to + every returned ACL. This will allow any Windows 2000 or XP workstation + user to access the profile.</para> - <varlistentry> - <term>preserve case = yes/no</term> - <listitem><para>controls whether new files are created with the - case that the client passes, or if they are forced to be the - <quote>default</quote> case. Default <emphasis>yes</emphasis>. - </para></listitem> - </varlistentry> - - <varlistentry> - <term>short preserve case = yes/no</term> - <listitem><para>controls if new files which conform to 8.3 syntax, - that is all in upper case and of suitable length, are created - upper case, or if they are forced to be the <quote>default</quote> - case. This option can be used with <quote>preserve case = yes</quote> - to permit long filenames to retain their case, while short names - are lowercased. Default <emphasis>yes</emphasis>.</para></listitem> - </varlistentry> - </variablelist> + <para>Note that if you have multiple users logging + on to a workstation then in order to prevent them from being able to access + each others profiles you must remove the "Bypass traverse checking" advanced + user right. This will prevent access to other users profile directories as + the top level profile directory (named after the user) is created by the + workstation profile code and has an ACL restricting entry to the directory + tree to the owning user. +</para> + +<para>Default: <emphasis><parameter>profile acls</parameter> = no +</emphasis> +</para> + +</listitem></varlistentry> +<varlistentry> +<indexterm significance="preferred"><primary>queuepause command</primary></indexterm><term><anchor id="QUEUEPAUSECOMMAND"/>queuepause command (S)</term><listitem> + <para>This parameter specifies the command to be + executed on the server host in order to pause the printer queue.</para> + + <para>This command should be a program or script which takes + a printer name as its only parameter and stops the printer queue, + such that no longer jobs are submitted to the printer.</para> + + <para>This command is not supported by Windows for Workgroups, + but can be issued from the Printers window under Windows 95 + and NT.</para> + + <para>If a <parameter moreinfo="none">%p</parameter> is given then the printer name + is put in its place. Otherwise it is placed at the end of the command. + </para> + + <para>Note that it is good practice to include the absolute + path in the command as the PATH may not be available to the + server.</para> + +<para><emphasis>No default</emphasis></para> +<para>Example: <emphasis><parameter>queuepause command</parameter> = disable %p +</emphasis> +</para> +</listitem></varlistentry> +<varlistentry> +<indexterm significance="preferred"><primary>queueresume command</primary></indexterm><term><anchor id="QUEUERESUMECOMMAND"/>queueresume command (S)</term><listitem> + <para>This parameter specifies the command to be + executed on the server host in order to resume the printer queue. It + is the command to undo the behavior that is caused by the + previous parameter (<link linkend="QUEUEPAUSECOMMAND"><parameter moreinfo="none"> + queuepause command</parameter></link>).</para> + + <para>This command should be a program or script which takes + a printer name as its only parameter and resumes the printer queue, + such that queued jobs are resubmitted to the printer.</para> + + <para>This command is not supported by Windows for Workgroups, + but can be issued from the Printers window under Windows 95 + and NT.</para> + + <para>If a <parameter moreinfo="none">%p</parameter> is given then the printer name + is put in its place. Otherwise it is placed at the end of the + command.</para> + + <para>Note that it is good practice to include the absolute + path in the command as the PATH may not be available to the + server.</para> + +<para>Default: <emphasis><parameter>queueresume command</parameter> = +</emphasis> +</para> +<para>Example: <emphasis><parameter>queueresume command</parameter> = enable %p +</emphasis> +</para> +</listitem></varlistentry> +<varlistentry> +<indexterm significance="preferred"><primary>read bmpx</primary></indexterm><term><anchor id="READBMPX"/>read bmpx (G)</term><listitem> + <para>This boolean parameter controls whether + <citerefentry><refentrytitle>smbd</refentrytitle> + <manvolnum>8</manvolnum></citerefentry> will support the "Read + Block Multiplex" SMB. This is now rarely used and defaults to + <constant>no</constant>. You should never need to set this + parameter.</para> + +<para>Default: <emphasis><parameter>read bmpx</parameter> = no +</emphasis> +</para> + +</listitem></varlistentry> +<varlistentry> +<indexterm significance="preferred"><primary>read list</primary></indexterm><term><anchor id="READLIST"/>read list (S)</term><listitem> + <para>This is a list of users that are given read-only + access to a service. If the connecting user is in this list then + they will not be given write access, no matter what the <link linkend="READONLY"> + <parameter moreinfo="none">read only</parameter></link> + option is set to. The list can include group names using the + syntax described in the <link linkend="INVALIDUSERS"><parameter moreinfo="none"> + invalid users</parameter></link> parameter.</para> + + <para>This parameter will not work with the <link linkend="SECURITY"> + <parameter moreinfo="none">security = share</parameter></link> in + Samba 3.0. This is by design.</para> + +<para>Default: <emphasis><parameter>read list</parameter> = +</emphasis> +</para> +<para>Example: <emphasis><parameter>read list</parameter> = mary, @students +</emphasis> +</para> +</listitem></varlistentry> +<varlistentry> +<indexterm significance="preferred"><primary>read only</primary></indexterm><term><anchor id="READONLY"/>read only (S)</term><listitem> + <para>An inverted synonym is <link linkend="WRITEABLE"> + <parameter moreinfo="none">writeable</parameter></link>.</para> + + <para>If this parameter is <constant>yes</constant>, then users + of a service may not create or modify files in the service's + directory.</para> + + <para>Note that a printable service (<command moreinfo="none">printable = yes</command>) + will <emphasis>ALWAYS</emphasis> allow writing to the directory + (user privileges permitting), but only via spooling operations.</para> + +<para>Default: <emphasis><parameter>read only</parameter> = yes +</emphasis> +</para> + +</listitem></varlistentry> +<varlistentry> +<indexterm significance="preferred"><primary>read raw</primary></indexterm><term><anchor id="READRAW"/>read raw (G)</term><listitem> + <para>This parameter controls whether or not the server + will support the raw read SMB requests when transferring data + to clients.</para> + + <para>If enabled, raw reads allow reads of 65535 bytes in + one packet. This typically provides a major performance benefit. + </para> + + <para>However, some clients either negotiate the allowable + block size incorrectly or are incapable of supporting larger block + sizes, and for these clients you may need to disable raw reads.</para> + +<para>In general this parameter should be viewed as a system tuning + tool and left severely alone.</para> + +<para>Default: <emphasis><parameter>read raw</parameter> = yes +</emphasis> +</para> + +</listitem></varlistentry> +<varlistentry> +<indexterm significance="preferred"><primary>realm</primary></indexterm><term><anchor id="REALM"/>realm (G)</term><listitem> + <para>This option specifies the kerberos realm to use. The realm is + used as the ADS equivalent of the NT4 <command moreinfo="none">domain</command>. It + is usually set to the DNS name of the kerberos server. + </para> + +<para>Default: <emphasis><parameter>realm</parameter> = +</emphasis> +</para> +<para>Example: <emphasis><parameter>realm</parameter> = mysambabox.mycompany.com +</emphasis> +</para> +</listitem></varlistentry> +<varlistentry> +<indexterm significance="preferred"><primary>remote announce</primary></indexterm><term><anchor id="REMOTEANNOUNCE"/>remote announce (G)</term><listitem> + <para>This option allows you to setup <citerefentry><refentrytitle>nmbd</refentrytitle> + <manvolnum>8</manvolnum></citerefentry>to periodically announce itself + to arbitrary IP addresses with an arbitrary workgroup name.</para> + + <para>This is useful if you want your Samba server to appear + in a remote workgroup for which the normal browse propagation + rules don't work. The remote workgroup can be anywhere that you + can send IP packets to.</para> + + <para>For example:</para> + + <para><command moreinfo="none">remote announce = 192.168.2.255/SERVERS + 192.168.4.255/STAFF</command></para> + + <para>the above line would cause <command moreinfo="none">nmbd</command> to announce itself + to the two given IP addresses using the given workgroup names. + If you leave out the workgroup name then the one given in + the <link linkend="WORKGROUP"><parameter moreinfo="none">workgroup</parameter></link> + parameter is used instead.</para> + + <para>The IP addresses you choose would normally be the broadcast + addresses of the remote networks, but can also be the IP addresses + of known browse masters if your network config is that stable.</para> + +<para>See <link linkend="NetworkBrowsing"/>.</para> + +<para>Default: <emphasis><parameter>remote announce</parameter> = +</emphasis> +</para> + +</listitem></varlistentry> +<varlistentry> +<indexterm significance="preferred"><primary>remote browse sync</primary></indexterm><term><anchor id="REMOTEBROWSESYNC"/>remote browse sync (G)</term><listitem> + <para>This option allows you to setup <citerefentry><refentrytitle>nmbd</refentrytitle> + <manvolnum>8</manvolnum></citerefentry> to periodically request + synchronization of browse lists with the master browser of a Samba + server that is on a remote segment. This option will allow you to + gain browse lists for multiple workgroups across routed networks. This + is done in a manner that does not work with any non-Samba servers.</para> + + <para>This is useful if you want your Samba server and all local + clients to appear in a remote workgroup for which the normal browse + propagation rules don't work. The remote workgroup can be anywhere + that you can send IP packets to.</para> + + <para>For example:</para> + + <para><command moreinfo="none">remote browse sync = 192.168.2.255 192.168.4.255</command></para> + + <para>the above line would cause <command moreinfo="none">nmbd</command> to request + the master browser on the specified subnets or addresses to + synchronize their browse lists with the local server.</para> + + <para>The IP addresses you choose would normally be the broadcast + addresses of the remote networks, but can also be the IP addresses + of known browse masters if your network config is that stable. If + a machine IP address is given Samba makes NO attempt to validate + that the remote machine is available, is listening, nor that it + is in fact the browse master on its segment.</para> + +<para>Default: <emphasis><parameter>remote browse sync</parameter> = +</emphasis> +</para> + +</listitem></varlistentry> +<varlistentry> +<indexterm significance="preferred"><primary>restrict anonymous</primary></indexterm><term><anchor id="RESTRICTANONYMOUS"/>restrict anonymous (G)</term><listitem> + <para>The setting of this parameter determines whether user and + group list information is returned for an anonymous connection. + and mirrors the effects of the + <constant>HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Control\LSA\RestrictAnonymous</constant> registry key in Windows + 2000 and Windows NT. When set to 0, user and group list + information is returned to anyone who asks. When set + to 1, only an authenticated user can retrive user and + group list information. For the value 2, supported by + Windows 2000/XP and Samba, no anonymous connections are allowed at + all. This can break third party and Microsoft + applications which expect to be allowed to perform + operations anonymously.</para> + + <para> + The security advantage of using restrict anonymous = 1 is dubious, + as user and group list information can be obtained using other + means. + </para> + + <note> + <para> + The security advantage of using restrict anonymous = 2 is removed + by setting <link linkend="GUESTOK"><parameter moreinfo="none">guest + ok</parameter> = yes</link> on any share. + </para> + </note> + +<para>Default: <emphasis><parameter>restrict anonymous</parameter> = 0 +</emphasis> +</para> + +</listitem></varlistentry> +<varlistentry> +<indexterm significance="preferred"><primary>root</primary><see>root directory</see></indexterm><term><anchor id="ROOT"/>root</term><listitem><para>This parameter is a synonym for root directory.</para></listitem></varlistentry><varlistentry> +<indexterm significance="preferred"><primary>root dir</primary><see>root directory</see></indexterm><term><anchor id="ROOTDIR"/>root dir</term><listitem><para>This parameter is a synonym for root directory.</para></listitem></varlistentry><varlistentry> +<indexterm significance="preferred"><primary>root directory</primary></indexterm><term><anchor id="ROOTDIRECTORY"/>root directory (G)</term><listitem> + <para>The server will <command moreinfo="none">chroot()</command> (i.e. + Change its root directory) to this directory on startup. This is + not strictly necessary for secure operation. Even without it the + server will deny access to files not in one of the service entries. + It may also check for, and deny access to, soft links to other + parts of the filesystem, or attempts to use ".." in file names + to access other directories (depending on the setting of the <link linkend="WIDELINKS"> + <parameter moreinfo="none">wide links</parameter></link> + parameter). + </para> + + <para>Adding a <parameter moreinfo="none">root directory</parameter> entry other + than "/" adds an extra level of security, but at a price. It + absolutely ensures that no access is given to files not in the + sub-tree specified in the <parameter moreinfo="none">root directory</parameter> + option, <emphasis>including</emphasis> some files needed for + complete operation of the server. To maintain full operability + of the server you will need to mirror some system files + into the <parameter moreinfo="none">root directory</parameter> tree. In particular + you will need to mirror <filename moreinfo="none">/etc/passwd</filename> (or a + subset of it), and any binaries or configuration files needed for + printing (if required). The set of files that must be mirrored is + operating system dependent.</para> + +<para>Default: <emphasis><parameter>root directory</parameter> = / +</emphasis> +</para> +<para>Example: <emphasis><parameter>root directory</parameter> = /homes/smb +</emphasis> +</para> +</listitem></varlistentry> +<varlistentry> +<indexterm significance="preferred"><primary>root postexec</primary></indexterm><term><anchor id="ROOTPOSTEXEC"/>root postexec (S)</term><listitem> + <para>This is the same as the <parameter moreinfo="none">postexec</parameter> + parameter except that the command is run as root. This + is useful for unmounting filesystems + (such as CDROMs) after a connection is closed.</para> + +<para>Default: <emphasis><parameter>root postexec</parameter> = +</emphasis> +</para> + +</listitem></varlistentry> +<varlistentry> +<indexterm significance="preferred"><primary>root preexec</primary></indexterm><term><anchor id="ROOTPREEXEC"/>root preexec (S)</term><listitem> + <para>This is the same as the <parameter moreinfo="none">preexec</parameter> + parameter except that the command is run as root. This + is useful for mounting filesystems (such as CDROMs) when a + connection is opened.</para> + +<para>Default: <emphasis><parameter>root preexec</parameter> = +</emphasis> +</para> + +</listitem></varlistentry> +<varlistentry> +<indexterm significance="preferred"><primary>root preexec close</primary></indexterm><term><anchor id="ROOTPREEXECCLOSE"/>root preexec close (S)</term><listitem> + <para>This is the same as the <parameter moreinfo="none">preexec close + </parameter> parameter except that the command is run as root.</para> + +<para>Default: <emphasis><parameter>root preexec close</parameter> = no +</emphasis> +</para> + +</listitem></varlistentry> +<varlistentry> +<indexterm significance="preferred"><primary>security</primary></indexterm><term><anchor id="SECURITY"/>security (G)</term><listitem> + <para>This option affects how clients respond to + Samba and is one of the most important settings in the <filename moreinfo="none"> + smb.conf</filename> file.</para> + + <para>The option sets the "security mode bit" in replies to + protocol negotiations with <citerefentry><refentrytitle>smbd</refentrytitle> + <manvolnum>8</manvolnum></citerefentry> to turn share level security on or off. Clients decide + based on this bit whether (and how) to transfer user and password + information to the server.</para> + + + <para>The default is <command moreinfo="none">security = user</command>, as this is + the most common setting needed when talking to Windows 98 and + Windows NT.</para> + + <para>The alternatives are <command moreinfo="none">security = share</command>, + <command moreinfo="none">security = server</command> or <command moreinfo="none">security = domain + </command>.</para> + + <para>In versions of Samba prior to 2.0.0, the default was + <command moreinfo="none">security = share</command> mainly because that was + the only option at one stage.</para> + + <para>There is a bug in WfWg that has relevance to this + setting. When in user or server level security a WfWg client + will totally ignore the password you type in the "connect + drive" dialog box. This makes it very difficult (if not impossible) + to connect to a Samba service as anyone except the user that + you are logged into WfWg as.</para> + + <para>If your PCs use usernames that are the same as their + usernames on the UNIX machine then you will want to use + <command moreinfo="none">security = user</command>. If you mostly use usernames + that don't exist on the UNIX box then use <command moreinfo="none">security = + share</command>.</para> + + <para>You should also use <command moreinfo="none">security = share</command> if you + want to mainly setup shares without a password (guest shares). This + is commonly used for a shared printer server. It is more difficult + to setup guest shares with <command moreinfo="none">security = user</command>, see + the <link linkend="MAPTOGUEST"><parameter moreinfo="none">map to guest</parameter> + </link>parameter for details.</para> + + <para>It is possible to use <command moreinfo="none">smbd</command> in a <emphasis> + hybrid mode</emphasis> where it is offers both user and share + level security under different <link linkend="NETBIOSALIASES"> + <parameter moreinfo="none">NetBIOS aliases</parameter></link>. </para> + + <para>The different settings will now be explained.</para> + + + <para><anchor id="SECURITYEQUALSSHARE"/><emphasis>SECURITY = SHARE</emphasis></para> + + <para>When clients connect to a share level security server they + need not log onto the server with a valid username and password before + attempting to connect to a shared resource (although modern clients + such as Windows 95/98 and Windows NT will send a logon request with + a username but no password when talking to a <command moreinfo="none">security = share + </command> server). Instead, the clients send authentication information + (passwords) on a per-share basis, at the time they attempt to connect + to that share.</para> + + <para>Note that <command moreinfo="none">smbd</command> <emphasis>ALWAYS</emphasis> + uses a valid UNIX user to act on behalf of the client, even in + <command moreinfo="none">security = share</command> level security.</para> + + <para>As clients are not required to send a username to the server + in share level security, <command moreinfo="none">smbd</command> uses several + techniques to determine the correct UNIX user to use on behalf + of the client.</para> + + <para>A list of possible UNIX usernames to match with the given + client password is constructed using the following methods :</para> + + <itemizedlist> + <listitem> + <para>If the <link linkend="GUESTONLY"><parameter moreinfo="none">guest + only</parameter></link> parameter is set, then all the other + stages are missed and only the <link linkend="GUESTACCOUNT"> + <parameter moreinfo="none">guest account</parameter></link> username is checked. + </para> + </listitem> + + <listitem> + <para>Is a username is sent with the share connection + request, then this username (after mapping - see <link linkend="USERNAMEMAP"> + <parameter moreinfo="none">username map</parameter></link>), + is added as a potential username. + </para> + </listitem> + + <listitem> + <para>If the client did a previous <emphasis>logon + </emphasis> request (the SessionSetup SMB call) then the + username sent in this SMB will be added as a potential username. + </para> + </listitem> + + <listitem> + <para>The name of the service the client requested is + added as a potential username. + </para> + </listitem> + + <listitem> + <para>The NetBIOS name of the client is added to + the list as a potential username. + </para> + </listitem> + + <listitem> + <para>Any users on the <link linkend="USER"><parameter moreinfo="none"> + user</parameter></link> list are added as potential usernames. + </para> + </listitem> + </itemizedlist> + + <para>If the <parameter moreinfo="none">guest only</parameter> parameter is + not set, then this list is then tried with the supplied password. + The first user for whom the password matches will be used as the + UNIX user.</para> + + <para>If the <parameter moreinfo="none">guest only</parameter> parameter is + set, or no username can be determined then if the share is marked + as available to the <parameter moreinfo="none">guest account</parameter>, then this + guest user will be used, otherwise access is denied.</para> + + <para>Note that it can be <emphasis>very</emphasis> confusing + in share-level security as to which UNIX username will eventually + be used in granting access.</para> + + <para>See also the section <link linkend="VALIDATIONSECT"> + NOTE ABOUT USERNAME/PASSWORD VALIDATION</link>.</para> + + <para><anchor id="SECURITYEQUALSUSER"/><emphasis>SECURITY = USER</emphasis></para> + + <para>This is the default security setting in Samba 3.0. + With user-level security a client must first "log-on" with a + valid username and password (which can be mapped using the <link linkend="USERNAMEMAP"> + <parameter moreinfo="none">username map</parameter></link> + parameter). Encrypted passwords (see the <link linkend="ENCRYPTPASSWORDS"> + <parameter moreinfo="none">encrypted passwords</parameter></link> parameter) can also + be used in this security mode. Parameters such as <link linkend="USER"> + <parameter moreinfo="none">user</parameter></link> and <link linkend="GUESTONLY"> + <parameter moreinfo="none">guest only</parameter></link> if set are then applied and + may change the UNIX user to use on this connection, but only after + the user has been successfully authenticated.</para> + + <para><emphasis>Note</emphasis> that the name of the resource being + requested is <emphasis>not</emphasis> sent to the server until after + the server has successfully authenticated the client. This is why + guest shares don't work in user level security without allowing + the server to automatically map unknown users into the <link linkend="GUESTACCOUNT"> + <parameter moreinfo="none">guest account</parameter></link>. + See the <link linkend="MAPTOGUEST"><parameter moreinfo="none">map to guest</parameter> + </link> parameter for details on doing this.</para> + + <para>See also the section <link linkend="VALIDATIONSECT"> + NOTE ABOUT USERNAME/PASSWORD VALIDATION</link>.</para> + + <para><anchor id="SECURITYEQUALSDOMAIN"/><emphasis>SECURITY = DOMAIN</emphasis></para> + + <para>This mode will only work correctly if <citerefentry><refentrytitle>net</refentrytitle> + <manvolnum>8</manvolnum></citerefentry> has been used to add this + machine into a Windows NT Domain. It expects the <link linkend="ENCRYPTPASSWORDS"> + <parameter moreinfo="none">encrypted passwords</parameter> + </link> parameter to be set to <constant>yes</constant>. In this + mode Samba will try to validate the username/password by passing + it to a Windows NT Primary or Backup Domain Controller, in exactly + the same way that a Windows NT Server would do.</para> + + <para><emphasis>Note</emphasis> that a valid UNIX user must still + exist as well as the account on the Domain Controller to allow + Samba to have a valid UNIX account to map file access to.</para> + + <para><emphasis>Note</emphasis> that from the client's point + of view <command moreinfo="none">security = domain</command> is the same + as <command moreinfo="none">security = user</command>. It only + affects how the server deals with the authentication, + it does not in any way affect what the client sees.</para> + + <para><emphasis>Note</emphasis> that the name of the resource being + requested is <emphasis>not</emphasis> sent to the server until after + the server has successfully authenticated the client. This is why + guest shares don't work in user level security without allowing + the server to automatically map unknown users into the <link linkend="GUESTACCOUNT"> + <parameter moreinfo="none">guest account</parameter></link>. + See the <link linkend="MAPTOGUEST"><parameter moreinfo="none">map to guest</parameter> + </link> parameter for details on doing this.</para> + + <para>See also the section <link linkend="VALIDATIONSECT"> + NOTE ABOUT USERNAME/PASSWORD VALIDATION</link>.</para> + + <para>See also the <link linkend="PASSWORDSERVER"><parameter moreinfo="none">password + server</parameter></link> parameter and the <link linkend="ENCRYPTPASSWORDS"> + <parameter moreinfo="none">encrypted passwords</parameter> + </link> parameter.</para> + + <para><anchor id="SECURITYEQUALSSERVER"/><emphasis>SECURITY = SERVER</emphasis></para> + + <para>In this mode Samba will try to validate the username/password + by passing it to another SMB server, such as an NT box. If this + fails it will revert to <command moreinfo="none">security = + user</command>. It expects the <link linkend="ENCRYPTPASSWORDS"> + <parameter moreinfo="none">encrypted passwords</parameter></link> parameter + to be set to <constant>yes</constant>, unless the remote server + does not support them. However note that if encrypted passwords have been + negotiated then Samba cannot revert back to checking the UNIX password file, + it must have a valid <filename moreinfo="none">smbpasswd</filename> file to check + users against. See the chapter about the User Database in the Samba HOWTO Collection for details on how to set this up.</para> + + <note><para>This mode of operation has + significant pitfalls, due to the fact that is activly initiates a + man-in-the-middle attack on the remote SMB server. In particular, + this mode of operation can cause significant resource consuption on + the PDC, as it must maintain an active connection for the duration + of the user's session. Furthermore, if this connection is lost, + there is no way to reestablish it, and futher authenticaions to the + Samba server may fail. (From a single client, till it disconnects). + </para></note> + + <note><para>From the client's point of + view <command moreinfo="none">security = server</command> is the + same as <command moreinfo="none">security = user</command>. It + only affects how the server deals with the authentication, it does + not in any way affect what the client sees.</para></note> + + <para><emphasis>Note</emphasis> that the name of the resource being + requested is <emphasis>not</emphasis> sent to the server until after + the server has successfully authenticated the client. This is why + guest shares don't work in user level security without allowing + the server to automatically map unknown users into the <link linkend="GUESTACCOUNT"> + <parameter moreinfo="none">guest account</parameter></link>. + See the <link linkend="MAPTOGUEST"><parameter moreinfo="none">map to guest</parameter> + </link> parameter for details on doing this.</para> + + <para>See also the section <link linkend="VALIDATIONSECT"> + NOTE ABOUT USERNAME/PASSWORD VALIDATION</link>.</para> + + <para>See also the <link linkend="PASSWORDSERVER"><parameter moreinfo="none">password + server</parameter></link> parameter and the <link linkend="ENCRYPTPASSWORDS"> + <parameter moreinfo="none">encrypted passwords</parameter></link> parameter.</para> + + <para><anchor id="SECURITYEQUALSADS"/><emphasis>SECURITY = ADS</emphasis></para> - <para>By default, Samba 3.0 has the same semantics as a Windows - NT server, in that it is case insensitive but case preserving.</para> + <para>In this mode, Samba will act as a domain member in an ADS realm. To operate + in this mode, the machine running Samba will need to have Kerberos installed + and configured and Samba will need to be joined to the ADS realm using the + net utility. </para> -</refsect1> - -<refsect1 id="VALIDATIONSECT"> - <title>NOTE ABOUT USERNAME/PASSWORD VALIDATION</title> - - <para>There are a number of ways in which a user can connect - to a service. The server uses the following steps in determining - if it will allow a connection to a specified service. If all the - steps fail, the connection request is rejected. However, if one of the - steps succeeds, the following steps are not checked.</para> - - <para>If the service is marked <quote>guest only = yes</quote> and the - server is running with share-level security (<quote>security = share</quote>, - steps 1 to 5 are skipped.</para> - - - <orderedlist continuation="restarts" inheritnum="ignore" numeration="arabic"> - <listitem><para>If the client has passed a username/password - pair and that username/password pair is validated by the UNIX - system's password programs, the connection is made as that - username. This includes the - \\server\service%<replaceable>username</replaceable> method of passing - a username.</para></listitem> - - <listitem><para>If the client has previously registered a username - with the system and now supplies a correct password for that - username, the connection is allowed.</para></listitem> - - <listitem><para>The client's NetBIOS name and any previously - used usernames are checked against the supplied password. If - they match, the connection is allowed as the corresponding - user.</para></listitem> - - <listitem><para>If the client has previously validated a - username/password pair with the server and the client has passed - the validation token, that username is used. </para></listitem> - - <listitem><para>If a <quote>user = </quote> field is given in the - <filename moreinfo="none">smb.conf</filename> file for the service and the client - has supplied a password, and that password matches (according to - the UNIX system's password checking) with one of the usernames - from the <quote>user =</quote> field, the connection is made as - the username in the <quote>user =</quote> line. If one - of the usernames in the <quote>user =</quote> list begins with a - <quote>@</quote>, that name expands to a list of names in - the group of the same name.</para></listitem> - - <listitem><para>If the service is a guest service, a - connection is made as the username given in the <quote>guest - account =</quote> for the service, irrespective of the - supplied password.</para></listitem> - </orderedlist> - -</refsect1> - -<refsect1> - <title>EXPLANATION OF EACH PARAMETER</title> + <para>Note that this mode does NOT make Samba operate as a Active Directory Domain + Controller. </para> - <xi:include href="../smbdotconf/parameters.all.xml" parse="xml"/> + <para>Read the chapter about Domain Membership in the HOWTO for details.</para> + +<para>Default: <emphasis><parameter>security</parameter> = USER +</emphasis> +</para> +<para>Example: <emphasis><parameter>security</parameter> = DOMAIN +</emphasis> +</para> +</listitem></varlistentry> +<varlistentry> +<indexterm significance="preferred"><primary>security mask</primary></indexterm><term><anchor id="SECURITYMASK"/>security mask (S)</term><listitem> + <para>This parameter controls what UNIX permission + bits can be modified when a Windows NT client is manipulating + the UNIX permission on a file using the native NT security + dialog box.</para> + + <para>This parameter is applied as a mask (AND'ed with) to + the changed permission bits, thus preventing any bits not in + this mask from being modified. Essentially, zero bits in this + mask may be treated as a set of bits the user is not allowed + to change.</para> + + <para>If not set explicitly this parameter is 0777, allowing + a user to modify all the user/group/world permissions on a file. + </para> + + <para><emphasis>Note</emphasis> that users who can access the + Samba server through other means can easily bypass this + restriction, so it is primarily useful for standalone + "appliance" systems. Administrators of most normal systems will + probably want to leave it set to <constant>0777</constant>.</para> + +<para>Default: <emphasis><parameter>security mask</parameter> = 0777 +</emphasis> +</para> +<para>Example: <emphasis><parameter>security mask</parameter> = 0770 +</emphasis> +</para> +</listitem></varlistentry> +<varlistentry> +<indexterm significance="preferred"><primary>server schannel</primary></indexterm><term><anchor id="SERVERSCHANNEL"/>server schannel (G)</term><listitem> + <para>This controls whether the server offers or even + demands the use of the netlogon schannel. + <parameter>server schannel = no</parameter> does not + offer the schannel, <parameter>server schannel = + auto</parameter> offers the schannel but does not + enforce it, and <parameter>server schannel = + yes</parameter> denies access if the client is not + able to speak netlogon schannel. This is only the case + for Windows NT4 before SP4.</para> + + <para>Please note that with this set to + <parameter>no</parameter> you will have to apply the + WindowsXP requireSignOrSeal-Registry patch found in + the docs/Registry subdirectory.</para> + +<para>Default: <emphasis><parameter>server schannel</parameter> = auto +</emphasis> +</para> +<para>Example: <emphasis><parameter>server schannel</parameter> = yes +</emphasis> +</para> +</listitem></varlistentry> +<varlistentry> +<indexterm significance="preferred"><primary>server signing</primary></indexterm><term><anchor id="SERVERSIGNING"/>server signing (G)</term><listitem> + + <para>This controls whether the server offers or requires + the client it talks to to use SMB signing. Possible values + are <emphasis>auto</emphasis>, <emphasis>mandatory</emphasis> + and <emphasis>disabled</emphasis>. + </para> + + <para>When set to auto, SMB signing is offered, but not enforced. + When set to mandatory, SMB signing is required and if set + to disabled, SMB signing is not offered either.</para> + +<para>Default: <emphasis><parameter>server signing</parameter> = Disabled +</emphasis> +</para> + +</listitem></varlistentry> +<varlistentry> +<indexterm significance="preferred"><primary>server string</primary></indexterm><term><anchor id="SERVERSTRING"/>server string (G)</term><listitem> + <para>This controls what string will show up in the printer comment box in print + manager and next to the IPC connection in <command moreinfo="none">net view</command>. It + can be any string that you wish to show to your users.</para> + + <para>It also sets what will appear in browse lists next + to the machine name.</para> + + <para>A <parameter moreinfo="none">%v</parameter> will be replaced with the Samba + version number.</para> + + <para>A <parameter moreinfo="none">%h</parameter> will be replaced with the + hostname.</para> + +<para>Default: <emphasis><parameter>server string</parameter> = Samba %v +</emphasis> +</para> +<para>Example: <emphasis><parameter>server string</parameter> = University of GNUs Samba Server +</emphasis> +</para> +</listitem></varlistentry> +<varlistentry> +<indexterm significance="preferred"><primary>set directory</primary></indexterm><term><anchor id="SETDIRECTORY"/>set directory (S)</term><listitem> + <para>If <command moreinfo="none">set directory = no</command>, then + users of the service may not use the setdir command to change + directory.</para> + + <para>The <command moreinfo="none">setdir</command> command is only implemented + in the Digital Pathworks client. See the Pathworks documentation + for details.</para> + +<para>Default: <emphasis><parameter>set directory</parameter> = no +</emphasis> +</para> + +</listitem></varlistentry> +<varlistentry> +<indexterm significance="preferred"><primary>set primary group script</primary></indexterm><term><anchor id="SETPRIMARYGROUPSCRIPT"/>set primary group script (G)</term><listitem> + + <para>Thanks to the Posix subsystem in NT a Windows User has a + primary group in addition to the auxiliary groups. This script + sets the primary group in the unix userdatase when an + administrator sets the primary group from the windows user + manager or when fetching a SAM with <command>net rpc + vampire</command>. <parameter>%u</parameter> will be replaced + with the user whose primary group is to be set. + <parameter>%g</parameter> will be replaced with the group to + set.</para> + +<para>Default: <emphasis><parameter>set primary group script</parameter> = +</emphasis> +</para> +<para>Example: <emphasis><parameter>set primary group script</parameter> = /usr/sbin/usermod -g '%g' '%u' +</emphasis> +</para> +</listitem></varlistentry> +<varlistentry> +<indexterm significance="preferred"><primary>set quota command</primary></indexterm><term><anchor id="SETQUOTACOMMAND"/>set quota command (G)</term><listitem> + <para>The <command>set quota command</command> should only be used + whenever there is no operating system API available from the OS that + samba can use.</para> + + <para>This option is only available if Samba was configured with the argument <command>--with-sys-quotas</command> or + on linux when <command>./configure --with-quotas</command> was used and a working quota api + was found in the system. Most packages are configured with these options already.</para> -</refsect1> + <para>This parameter should specify the path to a script that + can set quota for the specified arguments.</para> -<refsect1> - <title>WARNINGS</title> + <para>The specified script should take the following arguments:</para> + + <itemizedlist> + <listitem><para>1 - quota type + <itemizedlist> + <listitem><para>1 - user quotas</para></listitem> + <listitem><para>2 - user default quotas (uid = -1)</para></listitem> + <listitem><para>3 - group quotas</para></listitem> + <listitem><para>4 - group default quotas (gid = -1)</para></listitem> + </itemizedlist> + </para></listitem> + <listitem><para>2 - id (uid for user, gid for group, -1 if N/A)</para></listitem> + <listitem><para>3 - quota state (0 = disable, 1 = enable, 2 = enable and enforce)</para></listitem> + <listitem><para>4 - block softlimit</para></listitem> + <listitem><para>5 - block hardlimit</para></listitem> + <listitem><para>6 - inode softlimit</para></listitem> + <listitem><para>7 - inode hardlimit</para></listitem> + <listitem><para>8(optional) - block size, defaults to 1024</para></listitem> + </itemizedlist> + + <para>The script should output at least one line of data on success. And nothing on failure.</para> + +<para>Default: <emphasis><parameter>set quota command</parameter> = +</emphasis> +</para> +<para>Example: <emphasis><parameter>set quota command</parameter> = /usr/local/sbin/set_quota +</emphasis> +</para> +</listitem></varlistentry> +<varlistentry> +<indexterm significance="preferred"><primary>share modes</primary></indexterm><term><anchor id="SHAREMODES"/>share modes (S)</term><listitem> + <para>This enables or disables the honoring of + the <parameter moreinfo="none">share modes</parameter> during a file open. These + modes are used by clients to gain exclusive read or write access + to a file.</para> + + <para>These open modes are not directly supported by UNIX, so + they are simulated using shared memory, or lock files if your + UNIX doesn't support shared memory (almost all do).</para> + + <para>The share modes that are enabled by this option are + <constant>DENY_DOS</constant>, <constant>DENY_ALL</constant>, + <constant>DENY_READ</constant>, <constant>DENY_WRITE</constant>, + <constant>DENY_NONE</constant> and <constant>DENY_FCB</constant>. + </para> + + <para>This option gives full share compatibility and enabled + by default.</para> + + <para>You should <emphasis>NEVER</emphasis> turn this parameter + off as many Windows applications will break if you do so.</para> + +<para>Default: <emphasis><parameter>share modes</parameter> = yes +</emphasis> +</para> + +</listitem></varlistentry> +<varlistentry> +<indexterm significance="preferred"><primary>short preserve case</primary></indexterm><term><anchor id="SHORTPRESERVECASE"/>short preserve case (S)</term><listitem> + <para>This boolean parameter controls if new files + which conform to 8.3 syntax, that is all in upper case and of + suitable length, are created upper case, or if they are forced + to be the <link linkend="DEFAULTCASE"><parameter moreinfo="none">default case + </parameter></link>. This option can be use with <link linkend="PRESERVECASE"><command moreinfo="none">preserve case = yes</command> + </link> to permit long filenames to retain their case, while short + names are lowered. </para> + + <para>See the section on <link linkend="NAMEMANGLINGSECT">NAME MANGLING</link>.</para> + +<para>Default: <emphasis><parameter>short preserve case</parameter> = yes +</emphasis> +</para> + +</listitem></varlistentry> +<varlistentry> +<indexterm significance="preferred"><primary>show add printer wizard</primary></indexterm><term><anchor id="SHOWADDPRINTERWIZARD"/>show add printer wizard (G)</term><listitem> + <para>With the introduction of MS-RPC based printing support + for Windows NT/2000 client in Samba 2.2, a "Printers..." folder will + appear on Samba hosts in the share listing. Normally this folder will + contain an icon for the MS Add Printer Wizard (APW). However, it is + possible to disable this feature regardless of the level of privilege + of the connected user.</para> + + <para>Under normal circumstances, the Windows NT/2000 client will + open a handle on the printer server with OpenPrinterEx() asking for + Administrator privileges. If the user does not have administrative + access on the print server (i.e is not root or a member of the + <parameter moreinfo="none">printer admin</parameter> group), the OpenPrinterEx() + call fails and the client makes another open call with a request for + a lower privilege level. This should succeed, however the APW + icon will not be displayed.</para> + + <para>Disabling the <parameter moreinfo="none">show add printer wizard</parameter> + parameter will always cause the OpenPrinterEx() on the server + to fail. Thus the APW icon will never be displayed. +</para> +<note><para>This does not prevent the same user from having + administrative privilege on an individual printer.</para></note> + +<para>Default: <emphasis><parameter>show add printer wizard</parameter> = yes +</emphasis> +</para> + +</listitem></varlistentry> +<varlistentry> +<indexterm significance="preferred"><primary>shutdown script</primary></indexterm><term><anchor id="SHUTDOWNSCRIPT"/>shutdown script (G)</term><listitem> + <para>This a full path name to a script called by + <citerefentry><refentrytitle>smbd</refentrytitle> + <manvolnum>8</manvolnum></citerefentry> that should + start a shutdown procedure.</para> + + <para>If the connected user posseses the <constant>SeRemoteShutdownPrivilege</constant>, + right, this command will be run as user.</para> + + <para>The %z %t %r %f variables are expanded as follows:</para> - <para>Although the configuration file permits service names - to contain spaces, your client software may not. Spaces will - be ignored in comparisons anyway, so it shouldn't be a - problem - but be aware of the possibility.</para> - - <para>On a similar note, many clients - especially DOS clients - - limit service names to eight characters. <citerefentry><refentrytitle>smbd</refentrytitle> - <manvolnum>8</manvolnum></citerefentry> has no such limitation, but attempts to connect from such - clients will fail if they truncate the service names. For this reason - you should probably keep your service names down to eight characters - in length.</para> - - <para>Use of the [homes] and [printers] special sections make life - for an administrator easy, but the various combinations of default - attributes can be tricky. Take extreme care when designing these - sections. In particular, ensure that the permissions on spool - directories are correct.</para> -</refsect1> - -<refsect1> - <title>VERSION</title> - - <para>This man page is correct for version 3.0 of the Samba suite.</para> -</refsect1> - -<refsect1> - <title>SEE ALSO</title> - <para> - <citerefentry><refentrytitle>samba</refentrytitle> - <manvolnum>7</manvolnum></citerefentry>, <citerefentry><refentrytitle>smbpasswd</refentrytitle> - <manvolnum>8</manvolnum></citerefentry>, <citerefentry><refentrytitle>swat</refentrytitle> - <manvolnum>8</manvolnum></citerefentry>, <citerefentry><refentrytitle>smbd</refentrytitle> - <manvolnum>8</manvolnum></citerefentry>, <citerefentry><refentrytitle>nmbd</refentrytitle> - <manvolnum>8</manvolnum></citerefentry>, <citerefentry><refentrytitle>smbclient</refentrytitle> - <manvolnum>1</manvolnum></citerefentry>, <citerefentry><refentrytitle>nmblookup</refentrytitle> - <manvolnum>1</manvolnum></citerefentry>, <citerefentry><refentrytitle>testparm</refentrytitle> - <manvolnum>1</manvolnum></citerefentry>, <citerefentry><refentrytitle>testprns</refentrytitle> - <manvolnum>1</manvolnum></citerefentry>.</para> -</refsect1> - -<refsect1> - <title>AUTHOR</title> + <itemizedlist> + <listitem> + <para><parameter moreinfo="none">%z</parameter> will be substituted with the + shutdown message sent to the server.</para> + </listitem> + + <listitem> + <para><parameter moreinfo="none">%t</parameter> will be substituted with the + number of seconds to wait before effectively starting the + shutdown procedure.</para> + </listitem> + + <listitem> + <para><parameter moreinfo="none">%r</parameter> will be substituted with the + switch <emphasis>-r</emphasis>. It means reboot after shutdown + for NT.</para> + </listitem> + + <listitem> + <para><parameter moreinfo="none">%f</parameter> will be substituted with the + switch <emphasis>-f</emphasis>. It means force the shutdown + even if applications do not respond for NT.</para> + </listitem> + </itemizedlist> + + <para>Shutdown script example: +<programlisting format="linespecific"> +#!/bin/bash + +$time=0 +let "time/60" +let "time++" + +/sbin/shutdown $3 $4 +$time $1 & +</programlisting> +Shutdown does not return so we need to launch it in background. +</para> + +<para>Default: <emphasis><parameter>shutdown script</parameter> = +</emphasis> +</para> +<para>Example: <emphasis><parameter>shutdown script</parameter> = /usr/local/samba/sbin/shutdown %m %t %r %f +</emphasis> +</para> +</listitem></varlistentry> +<varlistentry> +<indexterm significance="preferred"><primary>smb passwd file</primary></indexterm><term><anchor id="SMBPASSWDFILE"/>smb passwd file (G)</term><listitem> + <para>This option sets the path to the encrypted smbpasswd file. By + default the path to the smbpasswd file is compiled into Samba.</para> + +<para>Default: <emphasis><parameter>smb passwd file</parameter> = ${prefix}/private/smbpasswd +</emphasis> +</para> +<para>Example: <emphasis><parameter>smb passwd file</parameter> = /etc/samba/smbpasswd +</emphasis> +</para> +</listitem></varlistentry> +<varlistentry> +<indexterm significance="preferred"><primary>smb ports</primary></indexterm><term><anchor id="SMBPORTS"/>smb ports (G)</term><listitem> + <para>Specifies which ports the server should listen on for SMB traffic.</para> + +<para>Default: <emphasis><parameter>smb ports</parameter> = 445 139 +</emphasis> +</para> + +</listitem></varlistentry> +<varlistentry> +<indexterm significance="preferred"><primary>socket address</primary></indexterm><term><anchor id="SOCKETADDRESS"/>socket address (G)</term><listitem> + <para>This option allows you to control what + address Samba will listen for connections on. This is used to + support multiple virtual interfaces on the one server, each + with a different configuration.</para> + + <para>By default Samba will accept connections on any + address.</para> + +<para>Default: <emphasis><parameter>socket address</parameter> = +</emphasis> +</para> +<para>Example: <emphasis><parameter>socket address</parameter> = 192.168.2.20 +</emphasis> +</para> +</listitem></varlistentry> +<varlistentry> +<indexterm significance="preferred"><primary>socket options</primary></indexterm><term><anchor id="SOCKETOPTIONS"/>socket options (G)</term><listitem> + <para>This option allows you to set socket options + to be used when talking with the client.</para> + + <para>Socket options are controls on the networking layer + of the operating systems which allow the connection to be + tuned.</para> + + <para>This option will typically be used to tune your Samba server + for optimal performance for your local network. There is no way + that Samba can know what the optimal parameters are for your net, + so you must experiment and choose them yourself. We strongly + suggest you read the appropriate documentation for your operating + system first (perhaps <command moreinfo="none">man + setsockopt</command> will help).</para> + + <para>You may find that on some systems Samba will say + "Unknown socket option" when you supply an option. This means you + either incorrectly typed it or you need to add an include file + to includes.h for your OS. If the latter is the case please + send the patch to <ulink url="mailto:samba-technical@samba.org"> + samba-technical@samba.org</ulink>.</para> + + <para>Any of the supported socket options may be combined + in any way you like, as long as your OS allows it.</para> + + <para>This is the list of socket options currently settable + using this option:</para> + + <itemizedlist> + <listitem><para>SO_KEEPALIVE</para></listitem> + <listitem><para>SO_REUSEADDR</para></listitem> + <listitem><para>SO_BROADCAST</para></listitem> + <listitem><para>TCP_NODELAY</para></listitem> + <listitem><para>IPTOS_LOWDELAY</para></listitem> + <listitem><para>IPTOS_THROUGHPUT</para></listitem> + <listitem><para>SO_SNDBUF *</para></listitem> + <listitem><para>SO_RCVBUF *</para></listitem> + <listitem><para>SO_SNDLOWAT *</para></listitem> + <listitem><para>SO_RCVLOWAT *</para></listitem> + </itemizedlist> + + <para>Those marked with a <emphasis>'*'</emphasis> take an integer + argument. The others can optionally take a 1 or 0 argument to enable + or disable the option, by default they will be enabled if you + don't specify 1 or 0.</para> + + <para>To specify an argument use the syntax SOME_OPTION = VALUE + for example <command moreinfo="none">SO_SNDBUF = 8192</command>. Note that you must + not have any spaces before or after the = sign.</para> + + <para>If you are on a local network then a sensible option + might be:</para> + + <para><command moreinfo="none">socket options = IPTOS_LOWDELAY</command></para> + + <para>If you have a local network then you could try:</para> + + <para><command moreinfo="none">socket options = IPTOS_LOWDELAY TCP_NODELAY</command></para> + + <para>If you are on a wide area network then perhaps try + setting IPTOS_THROUGHPUT. </para> + + <para>Note that several of the options may cause your Samba + server to fail completely. Use these options with caution!</para> + +<para>Default: <emphasis><parameter>socket options</parameter> = TCP_NODELAY +</emphasis> +</para> +<para>Example: <emphasis><parameter>socket options</parameter> = IPTOS_LOWDELAY +</emphasis> +</para> +</listitem></varlistentry> +<varlistentry> +<indexterm significance="preferred"><primary>stat cache</primary></indexterm><term><anchor id="STATCACHE"/>stat cache (G)</term><listitem> + <para>This parameter determines if <citerefentry><refentrytitle>smbd</refentrytitle> + <manvolnum>8</manvolnum></citerefentry> will use a cache in order to + speed up case insensitive name mappings. You should never need + to change this parameter.</para> + +<para>Default: <emphasis><parameter>stat cache</parameter> = yes +</emphasis> +</para> + +</listitem></varlistentry> +<varlistentry> +<indexterm significance="preferred"><primary>store dos attributes</primary></indexterm><term><anchor id="STOREDOSATTRIBUTES"/>store dos attributes (S)</term><listitem> + <para>If this parameter is set Samba no longer attempts to + map DOS attributes like SYSTEM, HIDDEN, ARCHIVE or READ-ONLY + to UNIX permission bits (such as the <link linkend="MAPHIDDEN"><parameter moreinfo="none">map hidden</parameter></link>. Instead, DOS attributes will be stored onto an extended + attribute in the UNIX filesystem, associated with the file or directory. + For this to operate correctly, the parameters <link linkend="MAPHIDDEN"><parameter moreinfo="none">map hidden</parameter></link>, <link linkend="MAPSYSTEM"><parameter moreinfo="none">map system</parameter></link>, <link linkend="MAPARCHIVE"><parameter moreinfo="none">map archive</parameter></link> must be set to off. + This parameter writes the DOS attributes as a string into the + extended attribute named "user.DOSATTRIB". This extended attribute + is explicitly hidden from smbd clients requesting an EA list. + On Linux the filesystem must have been mounted with the mount + option user_xattr in order for extended attributes to work, also + extended attributes must be compiled into the Linux kernel. + </para> + +<para>Default: <emphasis><parameter>store dos attributes</parameter> = no +</emphasis> +</para> + +</listitem></varlistentry> +<varlistentry> +<indexterm significance="preferred"><primary>strict allocate</primary></indexterm><term><anchor id="STRICTALLOCATE"/>strict allocate (S)</term><listitem> + <para>This is a boolean that controls the handling of + disk space allocation in the server. When this is set to <constant>yes</constant> + the server will change from UNIX behaviour of not committing real + disk storage blocks when a file is extended to the Windows behaviour + of actually forcing the disk system to allocate real storage blocks + when a file is created or extended to be a given size. In UNIX + terminology this means that Samba will stop creating sparse files. + This can be slow on some systems.</para> + + <para>When strict allocate is <constant>no</constant> the server does sparse + disk block allocation when a file is extended.</para> + + <para>Setting this to <constant>yes</constant> can help Samba return + out of quota messages on systems that are restricting the disk quota + of users.</para> + +<para>Default: <emphasis><parameter>strict allocate</parameter> = no +</emphasis> +</para> + +</listitem></varlistentry> +<varlistentry> +<indexterm significance="preferred"><primary>strict locking</primary></indexterm><term><anchor id="STRICTLOCKING"/>strict locking (S)</term><listitem> + <para>This is a boolean that controls the handling of + file locking in the server. When this is set to <constant>yes</constant>, + the server will check every read and write access for file locks, and + deny access if locks exist. This can be slow on some systems.</para> + + <para>When strict locking is disabled, the server performs file + lock checks only when the client explicitly asks for them.</para> + + <para>Well-behaved clients always ask for lock checks when it + is important. So in the vast majority of cases, <command moreinfo="none">strict + locking = no</command> is acceptable.</para> - <para>The original Samba software and related utilities - were created by Andrew Tridgell. Samba is now developed - by the Samba Team as an Open Source project similar - to the way the Linux kernel is developed.</para> +<para>Default: <emphasis><parameter>strict locking</parameter> = yes +</emphasis> +</para> + +</listitem></varlistentry> +<varlistentry> +<indexterm significance="preferred"><primary>strict sync</primary></indexterm><term><anchor id="STRICTSYNC"/>strict sync (S)</term><listitem> + <para>Many Windows applications (including the Windows 98 explorer + shell) seem to confuse flushing buffer contents to disk with doing + a sync to disk. Under UNIX, a sync call forces the process to be + suspended until the kernel has ensured that all outstanding data in + kernel disk buffers has been safely stored onto stable storage. + This is very slow and should only be done rarely. Setting this + parameter to <constant>no</constant> (the default) means that + <citerefentry><refentrytitle>smbd</refentrytitle> + <manvolnum>8</manvolnum></citerefentry> ignores the Windows + applications requests for a sync call. There is only a possibility + of losing data if the operating system itself that Samba is running + on crashes, so there is little danger in this default setting. In + addition, this fixes many performance problems that people have + reported with the new Windows98 explorer shell file copies.</para> + +<para>Default: <emphasis><parameter>strict sync</parameter> = no +</emphasis> +</para> + +</listitem></varlistentry> +<varlistentry> +<indexterm significance="preferred"><primary>sync always</primary></indexterm><term><anchor id="SYNCALWAYS"/>sync always (S)</term><listitem> + <para>This is a boolean parameter that controls + whether writes will always be written to stable storage before + the write call returns. If this is <constant>no</constant> then the server will be + guided by the client's request in each write call (clients can + set a bit indicating that a particular write should be synchronous). + If this is <constant>yes</constant> then every write will be followed by a <command moreinfo="none">fsync() + </command> call to ensure the data is written to disk. Note that + the <parameter moreinfo="none">strict sync</parameter> parameter must be set to + <constant>yes</constant> in order for this parameter to have + any affect.</para> + +<para>Default: <emphasis><parameter>sync always</parameter> = no +</emphasis> +</para> + +</listitem></varlistentry> +<varlistentry> +<indexterm significance="preferred"><primary>syslog</primary></indexterm><term><anchor id="SYSLOG"/>syslog (G)</term><listitem> + <para>This parameter maps how Samba debug messages + are logged onto the system syslog logging levels. Samba debug + level zero maps onto syslog <constant>LOG_ERR</constant>, debug + level one maps onto <constant>LOG_WARNING</constant>, debug level + two maps onto <constant>LOG_NOTICE</constant>, debug level three + maps onto LOG_INFO. All higher levels are mapped to <constant> + LOG_DEBUG</constant>.</para> + + <para>This parameter sets the threshold for sending messages + to syslog. Only messages with debug level less than this value + will be sent to syslog.</para> + +<para>Default: <emphasis><parameter>syslog</parameter> = 1 +</emphasis> +</para> + +</listitem></varlistentry> +<varlistentry> +<indexterm significance="preferred"><primary>syslog only</primary></indexterm><term><anchor id="SYSLOGONLY"/>syslog only (G)</term><listitem> + <para>If this parameter is set then Samba debug + messages are logged into the system syslog only, and not to + the debug log files.</para> + +<para>Default: <emphasis><parameter>syslog only</parameter> = no +</emphasis> +</para> + +</listitem></varlistentry> +<varlistentry> +<indexterm significance="preferred"><primary>template homedir</primary></indexterm><term><anchor id="TEMPLATEHOMEDIR"/>template homedir (G)</term><listitem> + <para>When filling out the user information for a Windows NT + user, the <citerefentry><refentrytitle>winbindd</refentrytitle> + <manvolnum>8</manvolnum></citerefentry> daemon uses this + parameter to fill in the home directory for that user. If the + string <parameter moreinfo="none">%D</parameter> is present it + is substituted with the user's Windows NT domain name. If the + string <parameter moreinfo="none">%U</parameter> is present it + is substituted with the user's Windows NT user name.</para> + +<para>Default: <emphasis><parameter>template homedir</parameter> = /home/%D/%U +</emphasis> +</para> + +</listitem></varlistentry> +<varlistentry> +<indexterm significance="preferred"><primary>template primary group</primary></indexterm><term><anchor id="TEMPLATEPRIMARYGROUP"/>template primary group (G)</term><listitem> + <para>This option defines the default primary group for + each user created by <citerefentry><refentrytitle>winbindd</refentrytitle> + <manvolnum>8</manvolnum></citerefentry>'s local account management + functions (similar to the 'add user script'). + </para> + +<para>Default: <emphasis><parameter>template primary group</parameter> = nobody +</emphasis> +</para> + +</listitem></varlistentry> +<varlistentry> +<indexterm significance="preferred"><primary>template shell</primary></indexterm><term><anchor id="TEMPLATESHELL"/>template shell (G)</term><listitem> + <para>When filling out the user information for a Windows NT + user, the <citerefentry><refentrytitle>winbindd</refentrytitle> + <manvolnum>8</manvolnum></citerefentry> daemon uses this + parameter to fill in the login shell for that user.</para> + +<para><emphasis>No default</emphasis></para> + +</listitem></varlistentry> +<varlistentry> +<indexterm significance="preferred"><primary>time offset</primary></indexterm><term><anchor id="TIMEOFFSET"/>time offset (G)</term><listitem> + <para>This parameter is a setting in minutes to add + to the normal GMT to local time conversion. This is useful if + you are serving a lot of PCs that have incorrect daylight + saving time handling.</para> + +<para>Default: <emphasis><parameter>time offset</parameter> = 0 +</emphasis> +</para> +<para>Example: <emphasis><parameter>time offset</parameter> = 60 +</emphasis> +</para> +</listitem></varlistentry> +<varlistentry> +<indexterm significance="preferred"><primary>time server</primary></indexterm><term><anchor id="TIMESERVER"/>time server (G)</term><listitem> + <para>This parameter determines if <citerefentry><refentrytitle>nmbd</refentrytitle> + <manvolnum>8</manvolnum></citerefentry> advertises itself as a time server to Windows +clients.</para> + +<para>Default: <emphasis><parameter>time server</parameter> = no +</emphasis> +</para> + +</listitem></varlistentry> +<varlistentry> +<indexterm significance="preferred"><primary>unix charset</primary></indexterm><term><anchor id="UNIXCHARSET"/>unix charset (G)</term><listitem> + <para>Specifies the charset the unix machine + Samba runs on uses. Samba needs to know this in order to be able to + convert text to the charsets other SMB clients use. + </para> + + <para>This is also the charset Samba will use when specifying arguments + to scripts that it invokes. + </para> + +<para>Default: <emphasis><parameter>unix charset</parameter> = UTF8 +</emphasis> +</para> +<para>Example: <emphasis><parameter>unix charset</parameter> = ASCII +</emphasis> +</para> +</listitem></varlistentry> +<varlistentry> +<indexterm significance="preferred"><primary>unix extensions</primary></indexterm><term><anchor id="UNIXEXTENSIONS"/>unix extensions (G)</term><listitem> + <para>This boolean parameter controls whether Samba + implments the CIFS UNIX extensions, as defined by HP. + These extensions enable Samba to better serve UNIX CIFS clients + by supporting features such as symbolic links, hard links, etc... + These extensions require a similarly enabled client, and are of + no current use to Windows clients.</para> + +<para>Default: <emphasis><parameter>unix extensions</parameter> = yes +</emphasis> +</para> + +</listitem></varlistentry> +<varlistentry> +<indexterm significance="preferred"><primary>unix password sync</primary></indexterm><term><anchor id="UNIXPASSWORDSYNC"/>unix password sync (G)</term><listitem> + <para>This boolean parameter controls whether Samba + attempts to synchronize the UNIX password with the SMB password + when the encrypted SMB password in the smbpasswd file is changed. + If this is set to <constant>yes</constant> the program specified in the <parameter moreinfo="none">passwd + program</parameter>parameter is called <emphasis>AS ROOT</emphasis> - + to allow the new UNIX password to be set without access to the + old UNIX password (as the SMB password change code has no + access to the old password cleartext, only the new).</para> + +<para>Default: <emphasis><parameter>unix password sync</parameter> = no +</emphasis> +</para> + +</listitem></varlistentry> +<varlistentry> +<indexterm significance="preferred"><primary>update encrypted</primary></indexterm><term><anchor id="UPDATEENCRYPTED"/>update encrypted (G)</term><listitem> + + <para>This boolean parameter allows a user logging on with + a plaintext password to have their encrypted (hashed) password in + the smbpasswd file to be updated automatically as they log + on. This option allows a site to migrate from plaintext + password authentication (users authenticate with plaintext + password over the wire, and are checked against a UNIX account + database) to encrypted password authentication (the SMB + challenge/response authentication mechanism) without forcing all + users to re-enter their passwords via smbpasswd at the time the + change is made. This is a convenience option to allow the change + over to encrypted passwords to be made over a longer period. + Once all users have encrypted representations of their passwords + in the smbpasswd file this parameter should be set to + <constant>no</constant>.</para> + + <para>In order for this parameter to work correctly the <link linkend="ENCRYPTPASSWORDS"> + <parameter moreinfo="none">encrypt passwords</parameter></link> parameter must + be set to <constant>no</constant> when this parameter is set to <constant>yes</constant>.</para> + + <para>Note that even when this parameter is set a user + authenticating to <command moreinfo="none">smbd</command> must still enter a valid + password in order to connect correctly, and to update their hashed + (smbpasswd) passwords.</para> + +<para>Default: <emphasis><parameter>update encrypted</parameter> = no +</emphasis> +</para> + +</listitem></varlistentry> +<varlistentry> +<indexterm significance="preferred"><primary>use client driver</primary></indexterm><term><anchor id="USECLIENTDRIVER"/>use client driver (S)</term><listitem> + <para>This parameter applies only to Windows NT/2000 + clients. It has no effect on Windows 95/98/ME clients. When + serving a printer to Windows NT/2000 clients without first installing + a valid printer driver on the Samba host, the client will be required + to install a local printer driver. From this point on, the client + will treat the print as a local printer and not a network printer + connection. This is much the same behavior that will occur + when <command moreinfo="none">disable spoolss = yes</command>. + </para> + + <para>The differentiating factor is that under normal + circumstances, the NT/2000 client will attempt to open the network + printer using MS-RPC. The problem is that because the client + considers the printer to be local, it will attempt to issue the + OpenPrinterEx() call requesting access rights associated with the + logged on user. If the user possesses local administator rights but + not root privilegde on the Samba host (often the case), the + OpenPrinterEx() call will fail. The result is that the client will + now display an "Access Denied; Unable to connect" message + in the printer queue window (even though jobs may successfully be + printed). </para> + + <para>If this parameter is enabled for a printer, then any attempt + to open the printer with the PRINTER_ACCESS_ADMINISTER right is mapped + to PRINTER_ACCESS_USE instead. Thus allowing the OpenPrinterEx() + call to succeed. <emphasis>This parameter MUST not be able enabled + on a print share which has valid print driver installed on the Samba + server.</emphasis></para> + +<para>Default: <emphasis><parameter>use client driver</parameter> = no +</emphasis> +</para> + +</listitem></varlistentry> +<varlistentry> +<indexterm significance="preferred"><primary>use kerberos keytab</primary></indexterm><term><anchor id="USEKERBEROSKEYTAB"/>use kerberos keytab (G)</term><listitem> +<para> +Specifies whether Samba should attempt to maintain service principals in the systems +keytab file for <constant>host/FQDN</constant> and <constant>cifs/FQDN</constant>. +</para> + +<para>When you are using the heimdal Kerberos libraries, you must also +specify the following in <filename>/etc/krb5.conf</filename>:</para> + +<programlisting> +[libdefaults] + default_keytab_name = FILE:/etc/krb5.keytab +</programlisting> + +<para>Default: <emphasis><parameter>use kerberos keytab</parameter> = False +</emphasis> +</para> + +</listitem></varlistentry> +<varlistentry> +<indexterm significance="preferred"><primary>use mmap</primary></indexterm><term><anchor id="USEMMAP"/>use mmap (G)</term><listitem> + <para>This global parameter determines if the tdb internals of Samba can + depend on mmap working correctly on the running system. Samba requires a coherent + mmap/read-write system memory cache. Currently only HPUX does not have such a + coherent cache, and so this parameter is set to <constant>no</constant> by + default on HPUX. On all other systems this parameter should be left alone. This + parameter is provided to help the Samba developers track down problems with + the tdb internal code. + </para> + +<para>Default: <emphasis><parameter>use mmap</parameter> = yes +</emphasis> +</para> + +</listitem></varlistentry> +<varlistentry> +<indexterm significance="preferred"><primary>user</primary><see>username</see></indexterm><term><anchor id="USER"/>user</term><listitem><para>This parameter is a synonym for username.</para></listitem></varlistentry><varlistentry> +<indexterm significance="preferred"><primary>users</primary><see>username</see></indexterm><term><anchor id="USERS"/>users</term><listitem><para>This parameter is a synonym for username.</para></listitem></varlistentry><varlistentry> +<indexterm significance="preferred"><primary>username</primary></indexterm><term><anchor id="USERNAME"/>username (S)</term><listitem> + <para>Multiple users may be specified in a comma-delimited + list, in which case the supplied password will be tested against + each username in turn (left to right).</para> + + <para>The <parameter moreinfo="none">username</parameter> line is needed only when + the PC is unable to supply its own username. This is the case + for the COREPLUS protocol or where your users have different WfWg + usernames to UNIX usernames. In both these cases you may also be + better using the \\server\share%user syntax instead.</para> + + <para>The <parameter moreinfo="none">username</parameter> line is not a great + solution in many cases as it means Samba will try to validate + the supplied password against each of the usernames in the + <parameter moreinfo="none">username</parameter> line in turn. This is slow and + a bad idea for lots of users in case of duplicate passwords. + You may get timeouts or security breaches using this parameter + unwisely.</para> + + <para>Samba relies on the underlying UNIX security. This + parameter does not restrict who can login, it just offers hints + to the Samba server as to what usernames might correspond to the + supplied password. Users can login as whoever they please and + they will be able to do no more damage than if they started a + telnet session. The daemon runs as the user that they log in as, + so they cannot do anything that user cannot do.</para> + + <para>To restrict a service to a particular set of users you + can use the <link linkend="VALIDUSERS"><parameter moreinfo="none">valid users + </parameter></link> parameter.</para> + + <para>If any of the usernames begin with a '@' then the name + will be looked up first in the NIS netgroups list (if Samba + is compiled with netgroup support), followed by a lookup in + the UNIX groups database and will expand to a list of all users + in the group of that name.</para> + + <para>If any of the usernames begin with a '+' then the name + will be looked up only in the UNIX groups database and will + expand to a list of all users in the group of that name.</para> + + <para>If any of the usernames begin with a '&' then the name + will be looked up only in the NIS netgroups database (if Samba + is compiled with netgroup support) and will expand to a list + of all users in the netgroup group of that name.</para> + + <para>Note that searching though a groups database can take + quite some time, and some clients may time out during the + search.</para> + + <para>See the section <link linkend="VALIDATIONSECT">NOTE ABOUT + USERNAME/PASSWORD VALIDATION</link> for more information on how +this parameter determines access to the services.</para> + +<para>Default: <emphasis><parameter>username</parameter> = +# The guest account if a guest service, + else <empty string>. +</emphasis> +</para> +<para>Example: <emphasis><parameter>username</parameter> = fred, mary, jack, jane, @users, @pcgroup +</emphasis> +</para> +</listitem></varlistentry> +<varlistentry> +<indexterm significance="preferred"><primary>username level</primary></indexterm><term><anchor id="USERNAMELEVEL"/>username level (G)</term><listitem> + <para>This option helps Samba to try and 'guess' at + the real UNIX username, as many DOS clients send an all-uppercase + username. By default Samba tries all lowercase, followed by the + username with the first letter capitalized, and fails if the + username is not found on the UNIX machine.</para> + + <para>If this parameter is set to non-zero the behavior changes. + This parameter is a number that specifies the number of uppercase + combinations to try while trying to determine the UNIX user name. The + higher the number the more combinations will be tried, but the slower + the discovery of usernames will be. Use this parameter when you have + strange usernames on your UNIX machine, such as <constant>AstrangeUser + </constant>.</para> + + <para>This parameter is needed only on UNIX systems that have case + sensitive usernames.</para> + +<para>Default: <emphasis><parameter>username level</parameter> = 0 +</emphasis> +</para> +<para>Example: <emphasis><parameter>username level</parameter> = 5 +</emphasis> +</para> +</listitem></varlistentry> +<varlistentry> +<indexterm significance="preferred"><primary>username map</primary></indexterm><term><anchor id="USERNAMEMAP"/>username map (G)</term><listitem> + <para>This option allows you to specify a file containing + a mapping of usernames from the clients to the server. This can be + used for several purposes. The most common is to map usernames + that users use on DOS or Windows machines to those that the UNIX + box uses. The other is to map multiple users to a single username + so that they can more easily share files.</para> + + <para>The map file is parsed line by line. Each line should + contain a single UNIX username on the left then a '=' followed + by a list of usernames on the right. The list of usernames on the + right may contain names of the form @group in which case they + will match any UNIX username in that group. The special client + name '*' is a wildcard and matches any name. Each line of the + map file may be up to 1023 characters long.</para> + + <para>The file is processed on each line by taking the + supplied username and comparing it with each username on the right + hand side of the '=' signs. If the supplied name matches any of + the names on the right hand side then it is replaced with the name + on the left. Processing then continues with the next line.</para> + + <para>If any line begins with a '#' or a ';' then it is ignored</para> + + <para>If any line begins with an '!' then the processing + will stop after that line if a mapping was done by the line. + Otherwise mapping continues with every line being processed. + Using '!' is most useful when you have a wildcard mapping line + later in the file.</para> + + <para>For example to map from the name <constant>admin</constant> + or <constant>administrator</constant> to the UNIX name <constant> + root</constant> you would use:</para> + + <para><command moreinfo="none">root = admin administrator</command></para> + + <para>Or to map anyone in the UNIX group <constant>system</constant> + to the UNIX name <constant>sys</constant> you would use:</para> + + <para><command moreinfo="none">sys = @system</command></para> + + <para>You can have as many mappings as you like in a username map file.</para> + + + <para>If your system supports the NIS NETGROUP option then + the netgroup database is checked before the <filename moreinfo="none">/etc/group + </filename> database for matching groups.</para> + + <para>You can map Windows usernames that have spaces in them + by using double quotes around the name. For example:</para> + + <para><command moreinfo="none">tridge = "Andrew Tridgell"</command></para> + + <para>would map the windows username "Andrew Tridgell" to the + unix username "tridge".</para> + + <para>The following example would map mary and fred to the + unix user sys, and map the rest to guest. Note the use of the + '!' to tell Samba to stop processing if it gets a match on + that line.</para> + +<para><programlisting format="linespecific"> +!sys = mary fred +guest = * +</programlisting></para> + + <para>Note that the remapping is applied to all occurrences + of usernames. Thus if you connect to \\server\fred and <constant> + fred</constant> is remapped to <constant>mary</constant> then you + will actually be connecting to \\server\mary and will need to + supply a password suitable for <constant>mary</constant> not + <constant>fred</constant>. The only exception to this is the + username passed to the <link linkend="PASSWORDSERVER"><parameter moreinfo="none"> + password server</parameter></link> (if you have one). The password + server will receive whatever username the client supplies without + modification.</para> + + <para>Also note that no reverse mapping is done. The main effect + this has is with printing. Users who have been mapped may have + trouble deleting print jobs as PrintManager under WfWg will think + they don't own the print job.</para> + + <para> + Samba versions prior to 3.0.8 would only support reading the fully qualified + username (e.g.: DOMAIN\user) from the username map when performing a + kerberos login from a client. However, when looking up a map + entry for a user authenticated by NTLM[SSP], only the login name would be + used for matches. This resulted in inconsistent behavior sometimes + even on the same server. + </para> + + <para> + The following functionality is obeyed in version 3.0.8 and later: + </para> + + <para> + When performing local authentication, the username map is + applied to the login name before attempting to authenticate + the connection. + </para> + + <para> + When relying upon a external domain controller for validating + authentication requests, smbd will apply the username map + to the fully qualified username (i.e. DOMAIN\user) only + after the user has been successfully authenticated. + </para> + +<para>Default: <emphasis><parameter>username map</parameter> = +# no username map +</emphasis> +</para> +<para>Example: <emphasis><parameter>username map</parameter> = /usr/local/samba/lib/users.map +</emphasis> +</para> +</listitem></varlistentry> +<varlistentry> +<indexterm significance="preferred"><primary>use sendfile</primary></indexterm><term><anchor id="USESENDFILE"/>use sendfile (S)</term><listitem> + <para>If this parameter is <constant>yes</constant>, and the <constant>sendfile()</constant> system call is supported by the underlying operating system, then some SMB read calls (mainly ReadAndX + and ReadRaw) will use the more efficient sendfile system call for files that + are exclusively oplocked. This may make more efficient use of the system CPU's + and cause Samba to be faster. Samba automatically turns this off for clients + that use protocol levels lower than NT LM 0.12 and when it detects a client is + Windows 9x (using sendfile from Linux will cause these clients to fail). + </para> + +<para>Default: <emphasis><parameter>use sendfile</parameter> = yes +</emphasis> +</para> + +</listitem></varlistentry> +<varlistentry> +<indexterm significance="preferred"><primary>use spnego</primary></indexterm><term><anchor id="USESPNEGO"/>use spnego (G)</term><listitem> + <para>This variable controls controls whether samba will try + to use Simple and Protected NEGOciation (as specified by rfc2478) with + WindowsXP and Windows2000 clients to agree upon an authentication mechanism. +</para> + +<para> + Unless further issues are discovered with our SPNEGO + implementation, there is no reason this should ever be + disabled.</para> + +<para>Default: <emphasis><parameter>use spnego</parameter> = yes +</emphasis> +</para> + +</listitem></varlistentry> +<varlistentry> +<indexterm significance="preferred"><primary>utmp</primary></indexterm><term><anchor id="UTMP"/>utmp (G)</term><listitem> + <para>This boolean parameter is only available if + Samba has been configured and compiled with the option <command moreinfo="none"> + --with-utmp</command>. If set to <constant>yes</constant> then Samba will attempt + to add utmp or utmpx records (depending on the UNIX system) whenever a + connection is made to a Samba server. Sites may use this to record the + user connecting to a Samba share.</para> + + <para>Due to the requirements of the utmp record, we + are required to create a unique identifier for the + incoming user. Enabling this option creates an n^2 + algorithm to find this number. This may impede + performance on large installations. </para> + +<para>Default: <emphasis><parameter>utmp</parameter> = no +</emphasis> +</para> + +</listitem></varlistentry> +<varlistentry> +<indexterm significance="preferred"><primary>utmp directory</primary></indexterm><term><anchor id="UTMPDIRECTORY"/>utmp directory (G)</term><listitem> + <para>This parameter is only available if Samba has + been configured and compiled with the option <command moreinfo="none"> + --with-utmp</command>. It specifies a directory pathname that is + used to store the utmp or utmpx files (depending on the UNIX system) that + record user connections to a Samba server. By default this is + not set, meaning the system will use whatever utmp file the + native system is set to use (usually + <filename moreinfo="none">/var/run/utmp</filename> on Linux).</para> + +<para>Default: <emphasis><parameter>utmp directory</parameter> = +# Determined automatically +</emphasis> +</para> +<para>Example: <emphasis><parameter>utmp directory</parameter> = /var/run/utmp +</emphasis> +</para> +</listitem></varlistentry> +<varlistentry> +<indexterm significance="preferred"><primary>-valid</primary></indexterm><term><anchor id="-VALID"/>-valid (S)</term><listitem> + <para> This parameter indicates whether a share is + valid and thus can be used. When this parameter is set to false, + the share will be in no way visible nor accessible. + </para> + + <para> + This option should not be + used by regular users but might be of help to developers. + Samba uses this option internally to mark shares as deleted. + </para> + +<para>Default: <emphasis><parameter>-valid</parameter> = yes +</emphasis> +</para> + +</listitem></varlistentry> +<varlistentry> +<indexterm significance="preferred"><primary>valid users</primary></indexterm><term><anchor id="VALIDUSERS"/>valid users (S)</term><listitem> + <para>This is a list of users that should be allowed + to login to this service. Names starting with '@', '+' and '&' + are interpreted using the same rules as described in the + <parameter moreinfo="none">invalid users</parameter> parameter.</para> + + <para>If this is empty (the default) then any user can login. + If a username is in both this list and the <parameter moreinfo="none">invalid + users</parameter> list then access is denied for that user.</para> + + <para>The current servicename is substituted for <parameter moreinfo="none">%S + </parameter>. This is useful in the [homes] section.</para> + +<para>Default: <emphasis><parameter>valid users</parameter> = +# No valid users list (anyone can login) +</emphasis> +</para> +<para>Example: <emphasis><parameter>valid users</parameter> = greg, @pcusers +</emphasis> +</para> +</listitem></varlistentry> +<varlistentry> +<indexterm significance="preferred"><primary>veto files</primary></indexterm><term><anchor id="VETOFILES"/>veto files (S)</term><listitem> + <para>This is a list of files and directories that + are neither visible nor accessible. Each entry in the list must + be separated by a '/', which allows spaces to be included + in the entry. '*' and '?' can be used to specify multiple files + or directories as in DOS wildcards.</para> + + <para>Each entry must be a unix path, not a DOS path and + must <emphasis>not</emphasis> include the unix directory + separator '/'.</para> + + <para>Note that the <parameter moreinfo="none">case sensitive</parameter> option + is applicable in vetoing files.</para> + + <para>One feature of the veto files parameter that it + is important to be aware of is Samba's behaviour when + trying to delete a directory. If a directory that is + to be deleted contains nothing but veto files this + deletion will <emphasis>fail</emphasis> unless you also set + the <parameter moreinfo="none">delete veto files</parameter> parameter to + <parameter moreinfo="none">yes</parameter>.</para> + + <para>Setting this parameter will affect the performance + of Samba, as it will be forced to check all files and directories + for a match as they are scanned.</para> + +<para>Default: <emphasis><parameter>veto files</parameter> = +# No files or directories are vetoed. +</emphasis> +</para> +<para>Example: <emphasis><parameter>veto files</parameter> = +; Veto any files containing the word Security, +; any ending in .tmp, and any directory containing the +; word root. +veto files = /*Security*/*.tmp/*root*/ + +; Veto the Apple specific files that a NetAtalk server +; creates. +veto files = /.AppleDouble/.bin/.AppleDesktop/Network Trash Folder/ + +</emphasis> +</para> +</listitem></varlistentry> +<varlistentry> +<indexterm significance="preferred"><primary>veto oplock files</primary></indexterm><term><anchor id="VETOOPLOCKFILES"/>veto oplock files (S)</term><listitem> + <para>This parameter is only valid when the <link linkend="OPLOCKS"> + <parameter moreinfo="none">oplocks</parameter></link> + parameter is turned on for a share. It allows the Samba administrator + to selectively turn off the granting of oplocks on selected files that + match a wildcarded list, similar to the wildcarded list used in the + <link linkend="VETOFILES"><parameter moreinfo="none">veto files</parameter></link> + parameter.</para> + + + <para>You might want to do this on files that you know will + be heavily contended for by clients. A good example of this + is in the NetBench SMB benchmark program, which causes heavy + client contention for files ending in <filename moreinfo="none">.SEM</filename>. + To cause Samba not to grant oplocks on these files you would use + the line (either in the [global] section or in the section for + the particular NetBench share :</para> + +<para>Default: <emphasis><parameter>veto oplock files</parameter> = +# No files are vetoed for oplock grants +</emphasis> +</para> +<para>Example: <emphasis><parameter>veto oplock files</parameter> = /.*SEM/ +</emphasis> +</para> +</listitem></varlistentry> +<varlistentry> +<indexterm significance="preferred"><primary>vfs object</primary><see>vfs objects</see></indexterm><term><anchor id="VFSOBJECT"/>vfs object</term><listitem><para>This parameter is a synonym for vfs objects.</para></listitem></varlistentry><varlistentry> +<indexterm significance="preferred"><primary>vfs objects</primary></indexterm><term><anchor id="VFSOBJECTS"/>vfs objects (S)</term><listitem> + <para>This parameter specifies the backend names which + are used for Samba VFS I/O operations. By default, normal + disk I/O operations are used but these can be overloaded + with one or more VFS objects. </para> + +<para>Default: <emphasis><parameter>vfs objects</parameter> = +</emphasis> +</para> +<para>Example: <emphasis><parameter>vfs objects</parameter> = extd_audit recycle +</emphasis> +</para> +</listitem></varlistentry> +<varlistentry> +<indexterm significance="preferred"><primary>volume</primary></indexterm><term><anchor id="VOLUME"/>volume (S)</term><listitem> + <para>This allows you to override the volume label + returned for a share. Useful for CDROMs with installation programs + that insist on a particular volume label.</para> + +<para>Default: <emphasis><parameter>volume</parameter> = +# the name of the share +</emphasis> +</para> + +</listitem></varlistentry> +<varlistentry> +<indexterm significance="preferred"><primary>wide links</primary></indexterm><term><anchor id="WIDELINKS"/>wide links (S)</term><listitem> + <para>This parameter controls whether or not links + in the UNIX file system may be followed by the server. Links + that point to areas within the directory tree exported by the + server are always allowed; this parameter controls access only + to areas that are outside the directory tree being exported.</para> + + <para>Note that setting this parameter can have a negative + effect on your server performance due to the extra system calls + that Samba has to do in order to perform the link checks.</para> + +<para>Default: <emphasis><parameter>wide links</parameter> = yes +</emphasis> +</para> + +</listitem></varlistentry> +<varlistentry> +<indexterm significance="preferred"><primary>winbind cache time</primary></indexterm><term><anchor id="WINBINDCACHETIME"/>winbind cache time (G)</term><listitem> + <para>This parameter specifies the number of + seconds the <citerefentry><refentrytitle>winbindd</refentrytitle> + <manvolnum>8</manvolnum></citerefentry> daemon will cache + user and group information before querying a Windows NT server + again.</para> + <note><para>This does not apply to authentication requests, + these are always evaluated in real time.</para></note> + +<para>Default: <emphasis><parameter>winbind cache time</parameter> = 300 +</emphasis> +</para> + +</listitem></varlistentry> +<varlistentry> +<indexterm significance="preferred"><primary>winbind enable local accounts</primary></indexterm><term><anchor id="WINBINDENABLELOCALACCOUNTS"/>winbind enable local accounts (G)</term><listitem> + <para>This parameter controls whether or not winbindd + will act as a stand in replacement for the various account + management hooks in smb.conf (e.g. 'add user script'). + If enabled, winbindd will support the creation of local + users and groups as another source of UNIX account information + available via getpwnam() or getgrgid(), etc... + </para> + +<para>Default: <emphasis><parameter>winbind enable local accounts</parameter> = no +</emphasis> +</para> + +</listitem></varlistentry> +<varlistentry> +<indexterm significance="preferred"><primary>winbind enum groups</primary></indexterm><term><anchor id="WINBINDENUMGROUPS"/>winbind enum groups (G)</term><listitem> + <para>On large installations using <citerefentry><refentrytitle>winbindd</refentrytitle> + <manvolnum>8</manvolnum></citerefentry> it may be necessary to suppress + the enumeration of groups through the <command moreinfo="none">setgrent()</command>, + <command moreinfo="none">getgrent()</command> and + <command moreinfo="none">endgrent()</command> group of system calls. If + the <parameter moreinfo="none">winbind enum groups</parameter> parameter is + <constant>no</constant>, calls to the <command moreinfo="none">getgrent()</command> system + call will not return any data. </para> + +<warning><para>Turning off group enumeration may cause some programs to behave oddly. </para></warning> + +<para>Default: <emphasis><parameter>winbind enum groups</parameter> = yes +</emphasis> +</para> + +</listitem></varlistentry> +<varlistentry> +<indexterm significance="preferred"><primary>winbind enum users</primary></indexterm><term><anchor id="WINBINDENUMUSERS"/>winbind enum users (G)</term><listitem> + <para>On large installations using <citerefentry><refentrytitle>winbindd</refentrytitle> + <manvolnum>8</manvolnum></citerefentry> it may be + necessary to suppress the enumeration of users through the <command moreinfo="none">setpwent()</command>, + <command moreinfo="none">getpwent()</command> and + <command moreinfo="none">endpwent()</command> group of system calls. If + the <parameter moreinfo="none">winbind enum users</parameter> parameter is + <constant>no</constant>, calls to the <command moreinfo="none">getpwent</command> system call + will not return any data. </para> + +<warning><para>Turning off user + enumeration may cause some programs to behave oddly. For + example, the finger program relies on having access to the + full user list when searching for matching + usernames. </para></warning> + +<para>Default: <emphasis><parameter>winbind enum users</parameter> = yes +</emphasis> +</para> + +</listitem></varlistentry> +<varlistentry> +<indexterm significance="preferred"><primary>winbind nested groups</primary></indexterm><term><anchor id="WINBINDNESTEDGROUPS"/>winbind nested groups (G)</term><listitem> + <para>If set to yes, this parameter activates the support for nested + groups. Nested groups are also called local groups or + aliases. They work like their counterparts in Windows: Nested + groups are defined locally on any machine (they are shared + between DC's through their SAM) and can contain users and + global groups from any trusted SAM. To be able to use nested + groups, you need to run nss_winbind.</para> + <para>Please note that per 3.0.3 this is a new feature, so + handle with care.</para> + +<para>Default: <emphasis><parameter>winbind nested groups</parameter> = no +</emphasis> +</para> + +</listitem></varlistentry> +<varlistentry> +<indexterm significance="preferred"><primary>winbind separator</primary></indexterm><term><anchor id="WINBINDSEPARATOR"/>winbind separator (G)</term><listitem> + <para>This parameter allows an admin to define the character + used when listing a username of the form of <replaceable>DOMAIN + </replaceable>\<replaceable>user</replaceable>. This parameter + is only applicable when using the <filename moreinfo="none">pam_winbind.so</filename> + and <filename moreinfo="none">nss_winbind.so</filename> modules for UNIX services. + </para> + + <para>Please note that setting this parameter to + causes problems + with group membership at least on glibc systems, as the character + + is used as a special character for NIS in /etc/group.</para> + +<para>Default: <emphasis><parameter>winbind separator</parameter> = '\' +</emphasis> +</para> +<para>Example: <emphasis><parameter>winbind separator</parameter> = + +</emphasis> +</para> +</listitem></varlistentry> +<varlistentry> +<indexterm significance="preferred"><primary>winbind trusted domains only</primary></indexterm><term><anchor id="WINBINDTRUSTEDDOMAINSONLY"/>winbind trusted domains only (G)</term><listitem> + <para>This parameter is designed to allow Samba servers that + are members of a Samba controlled domain to use UNIX accounts + distributed via NIS, rsync, or LDAP as the uid's for winbindd users + in the hosts primary domain. Therefore, the user DOMAIN\user1 would + be mapped to the account user1 in /etc/passwd instead of allocating + a new uid for him or her. +</para> + +<para>Default: <emphasis><parameter>winbind trusted domains only</parameter> = no +</emphasis> +</para> + +</listitem></varlistentry> +<varlistentry> +<indexterm significance="preferred"><primary>winbind use default domain</primary></indexterm><term><anchor id="WINBINDUSEDEFAULTDOMAIN"/>winbind use default domain (G)</term><listitem> + <para>This parameter specifies whether the + <citerefentry><refentrytitle>winbindd</refentrytitle> + <manvolnum>8</manvolnum></citerefentry> daemon should operate on users + without domain component in their username. Users without a domain + component are treated as is part of the winbindd server's own + domain. While this does not benifit Windows users, it makes SSH, FTP and + e-mail function in a way much closer to the way they + would in a native unix system.</para> + +<para>Default: <emphasis><parameter>winbind use default domain</parameter> = no +</emphasis> +</para> +<para>Example: <emphasis><parameter>winbind use default domain</parameter> = yes +</emphasis> +</para> +</listitem></varlistentry> +<varlistentry> +<indexterm significance="preferred"><primary>wins hook</primary></indexterm><term><anchor id="WINSHOOK"/>wins hook (G)</term><listitem> + <para>When Samba is running as a WINS server this + allows you to call an external program for all changes to the + WINS database. The primary use for this option is to allow the + dynamic update of external name resolution databases such as + dynamic DNS.</para> + + <para>The wins hook parameter specifies the name of a script + or executable that will be called as follows:</para> + + <para><command moreinfo="none">wins_hook operation name nametype ttl IP_list</command></para> + + <itemizedlist> + <listitem> + <para>The first argument is the operation and is + one of "add", "delete", or + "refresh". In most cases the operation + can be ignored as the rest of the parameters + provide sufficient information. Note that + "refresh" may sometimes be called when + the name has not previously been added, in that + case it should be treated as an add.</para> + </listitem> + + <listitem> + <para>The second argument is the NetBIOS name. If the + name is not a legal name then the wins hook is not called. + Legal names contain only letters, digits, hyphens, underscores + and periods.</para> + </listitem> + + <listitem> + <para>The third argument is the NetBIOS name + type as a 2 digit hexadecimal number. </para> + </listitem> + + <listitem> + <para>The fourth argument is the TTL (time to live) + for the name in seconds.</para> + </listitem> + + <listitem> + <para>The fifth and subsequent arguments are the IP + addresses currently registered for that name. If this list is + empty then the name should be deleted.</para> + </listitem> + </itemizedlist> + + <para>An example script that calls the BIND dynamic DNS update + program <command moreinfo="none">nsupdate</command> is provided in the examples + directory of the Samba source code. </para> + +<para><emphasis>No default</emphasis></para> + +</listitem></varlistentry> +<varlistentry> +<indexterm significance="preferred"><primary>wins proxy</primary></indexterm><term><anchor id="WINSPROXY"/>wins proxy (G)</term><listitem> + <para>This is a boolean that controls if <citerefentry><refentrytitle>nmbd</refentrytitle> + <manvolnum>8</manvolnum></citerefentry> will respond to broadcast name + queries on behalf of other hosts. You may need to set this + to <constant>yes</constant> for some older clients.</para> + +<para>Default: <emphasis><parameter>wins proxy</parameter> = no +</emphasis> +</para> + +</listitem></varlistentry> +<varlistentry> +<indexterm significance="preferred"><primary>wins server</primary></indexterm><term><anchor id="WINSSERVER"/>wins server (G)</term><listitem> + <para>This specifies the IP address (or DNS name: IP + address for preference) of the WINS server that <citerefentry><refentrytitle>nmbd</refentrytitle> + <manvolnum>8</manvolnum></citerefentry> should register with. If you have a WINS server on + your network then you should set this to the WINS server's IP.</para> + + <para>You should point this at your WINS server if you have a + multi-subnetted network.</para> + + <para>If you want to work in multiple namespaces, you can + give every wins server a 'tag'. For each tag, only one + (working) server will be queried for a name. The tag should be + separated from the ip address by a colon. + </para> + + <note><para>You need to set up Samba to point + to a WINS server if you have multiple subnets and wish cross-subnet + browsing to work correctly.</para></note> + <para>See the <link linkend="NetworkBrowsing"/>.</para> + +<para>Default: <emphasis><parameter>wins server</parameter> = +</emphasis> +</para> +<para>Example: <emphasis><parameter>wins server</parameter> = mary:192.9.200.1 fred:192.168.3.199 mary:192.168.2.61 - <para>The original Samba man pages were written by Karl Auer. - The man page sources were converted to YODL format (another - excellent piece of Open Source software, available at <ulink noescape="1" url="ftp://ftp.icce.rug.nl/pub/unix/"> - ftp://ftp.icce.rug.nl/pub/unix/</ulink>) and updated for the Samba 2.0 - release by Jeremy Allison. The conversion to DocBook for - Samba 2.2 was done by Gerald Carter. The conversion to DocBook XML 4.2 - for Samba 3.0 was done by Alexander Bokovoy.</para> -</refsect1> - -</refentry> +# For this example when querying a certain name, 192.19.200.1 will + be asked first and if that doesn't respond 192.168.2.61. If either + of those doesn't know the name 192.168.3.199 will be queried. +</emphasis> +</para><para>Example: <emphasis><parameter>wins server</parameter> = 192.9.200.1 192.168.2.61 +</emphasis> +</para> +</listitem></varlistentry> +<varlistentry> +<indexterm significance="preferred"><primary>wins support</primary></indexterm><term><anchor id="WINSSUPPORT"/>wins support (G)</term><listitem> + <para>This boolean controls if the <citerefentry><refentrytitle>nmbd</refentrytitle> + <manvolnum>8</manvolnum></citerefentry> process in Samba will act as a WINS server. You should + not set this to <constant>yes</constant> unless you have a multi-subnetted network and + you wish a particular <command moreinfo="none">nmbd</command> to be your WINS server. + Note that you should <emphasis>NEVER</emphasis> set this to <constant>yes</constant> + on more than one machine in your network.</para> + + +<para>Default: <emphasis><parameter>wins support</parameter> = no +</emphasis> +</para> + +</listitem></varlistentry> +<varlistentry> +<indexterm significance="preferred"><primary>workgroup</primary></indexterm><term><anchor id="WORKGROUP"/>workgroup (G)</term><listitem> + <para>This controls what workgroup your server will + appear to be in when queried by clients. Note that this parameter + also controls the Domain name used with + the <link linkend="SECURITYEQUALSDOMAIN"><command moreinfo="none">security = domain</command></link> + setting.</para> + +<para>Default: <emphasis><parameter>workgroup</parameter> = WORKGROUP +</emphasis> +</para> +<para>Example: <emphasis><parameter>workgroup</parameter> = MYGROUP +</emphasis> +</para> +</listitem></varlistentry> +<varlistentry> +<indexterm significance="preferred"><primary>writable</primary><see>writeable</see></indexterm><term><anchor id="WRITABLE"/>writable</term><listitem><para>This parameter is a synonym for writeable.</para></listitem></varlistentry><varlistentry> +<indexterm significance="preferred"><primary>writeable</primary></indexterm><term><anchor id="WRITEABLE"/>writeable (S)</term><listitem> + <para>Inverted synonym for <link linkend="READONLY"> + <parameter moreinfo="none">read only</parameter></link>.</para> + +<para><emphasis>No default</emphasis></para> + +</listitem></varlistentry> +<varlistentry> +<indexterm significance="preferred"><primary>write cache size</primary></indexterm><term><anchor id="WRITECACHESIZE"/>write cache size (S)</term><listitem> + <para>If this integer parameter is set to non-zero value, + Samba will create an in-memory cache for each oplocked file + (it does <emphasis>not</emphasis> do this for + non-oplocked files). All writes that the client does not request + to be flushed directly to disk will be stored in this cache if possible. + The cache is flushed onto disk when a write comes in whose offset + would not fit into the cache or when the file is closed by the client. + Reads for the file are also served from this cache if the data is stored + within it.</para> + + <para>This cache allows Samba to batch client writes into a more + efficient write size for RAID disks (i.e. writes may be tuned to + be the RAID stripe size) and can improve performance on systems + where the disk subsystem is a bottleneck but there is free + memory for userspace programs.</para> + + <para>The integer parameter specifies the size of this cache + (per oplocked file) in bytes.</para> + +<para>Default: <emphasis><parameter>write cache size</parameter> = 0 +</emphasis> +</para> +<para>Example: <emphasis><parameter>write cache size</parameter> = 262144 +# for a 256k cache size per file +</emphasis> +</para> +</listitem></varlistentry> +<varlistentry> +<indexterm significance="preferred"><primary>write list</primary></indexterm><term><anchor id="WRITELIST"/>write list (S)</term><listitem> + <para>This is a list of users that are given read-write + access to a service. If the connecting user is in this list then + they will be given write access, no matter what the <link linkend="READONLY"> + <parameter moreinfo="none">read only</parameter></link> + option is set to. The list can include group names using the + @group syntax.</para> + + <para>Note that if a user is in both the read list and the + write list then they will be given write access.</para> + + <para>This parameter will not work with the <link linkend="SECURITY"> + <parameter moreinfo="none">security = share</parameter></link> in + Samba 3.0. This is by design.</para> + + +<para>Default: <emphasis><parameter>write list</parameter> = +</emphasis> +</para> +<para>Example: <emphasis><parameter>write list</parameter> = admin, root, @staff +</emphasis> +</para> +</listitem></varlistentry> +<varlistentry> +<indexterm significance="preferred"><primary>write raw</primary></indexterm><term><anchor id="WRITERAW"/>write raw (G)</term><listitem> + <para>This parameter controls whether or not the server + will support raw write SMB's when transferring data from clients. + You should never need to change this parameter.</para> + +<para>Default: <emphasis><parameter>write raw</parameter> = yes +</emphasis> +</para> + +</listitem></varlistentry> +<varlistentry> +<indexterm significance="preferred"><primary>wtmp directory</primary></indexterm><term><anchor id="WTMPDIRECTORY"/>wtmp directory (G)</term><listitem> + <para>This parameter is only available if Samba has + been configured and compiled with the option <command moreinfo="none"> + --with-utmp</command>. It specifies a directory pathname that is + used to store the wtmp or wtmpx files (depending on the UNIX system) that + record user connections to a Samba server. The difference with + the utmp directory is the fact that user info is kept after a user + has logged out.</para> + +<para> + By default this is + not set, meaning the system will use whatever utmp file the + native system is set to use (usually + <filename moreinfo="none">/var/run/wtmp</filename> on Linux).</para> + +<para>Default: <emphasis><parameter>wtmp directory</parameter> = +</emphasis> +</para> +<para>Example: <emphasis><parameter>wtmp directory</parameter> = /var/log/wtmp +</emphasis> +</para> +</listitem></varlistentry> +</variablelist> |