* adding some notes on the wins failover stuff

* fixing some typos after running printing.sgml through ispell
(This used to be commit d20be2e868015266ef3b33f353e1c9a2e6d6b7e1)

3 files changed, 88 insertions, 7 deletions

diff --git a/docs/docbook/devdoc/dev-doc.sgml b/docs/docbook/devdoc/dev-doc.sgml
index 965d7a1ea8..5191ddcb93 100644
--- a/docs/docbook/devdoc/dev-doc.sgml
+++ b/docs/docbook/devdoc/dev-doc.sgml
@@ -9,6 +9,7 @@
 <!ENTITY Tracing SYSTEM "Tracing.sgml">
 <!ENTITY cifsntdomain SYSTEM "cifsntdomain.sgml">
 <!ENTITY printing SYSTEM "printing.sgml">
+<!ENTITY wins SYSTEM "wins.sgml">
 ]>
 
 <book id="Samba-Developer-Documentation">
@@ -60,5 +61,6 @@ url="http://www.fsf.org/licenses/gpl.txt">http://www.fsf.org/licenses/gpl.txt</u
 &Tracing;
 &cifsntdomain;
 &printing;
+&wins;
 
 </book>
diff --git a/docs/docbook/devdoc/printing.sgml b/docs/docbook/devdoc/printing.sgml
index c95d5460b7..8259fead5f 100644
--- a/docs/docbook/devdoc/printing.sgml
+++ b/docs/docbook/devdoc/printing.sgml
@@ -23,7 +23,7 @@ of certain features of Windows client printing.
 
 <sect1>
 <title>
-Printing Interface to Various Backends
+Printing Interface to Various Back ends
 </title>
 
 <para>
@@ -39,11 +39,11 @@ in <filename>printing.h</filename>.
 	<listitem><para>delete a job from the queue</para></listitem>
 	<listitem><para>pause a job in the print queue</para></listitem>
 	<listitem><para>result a paused print job in the queue</para></listitem>
-	<listitem><para>submit a jobn to the print queue</para></listitem>
+	<listitem><para>submit a job to the print queue</para></listitem>
 </itemizedlist>
 
 <para>
-Currently there are only two printing backend implementations
+Currently there are only two printing back end implementations
 defined.
 </para>
 
@@ -75,7 +75,7 @@ queue contents displayed to clients will be diminished as well.
 </para>
 
 <para>
-The list of currently opened print queue TDB's can eb found
+The list of currently opened print queue TDB's can be found
 be examining the list of tdb_print_db structures ( see print_db_head
 in printing.c ). A queue TDB is opened using the wrapper function
 printing.c:get_print_db_byname().  The function ensures that smbd
@@ -125,7 +125,7 @@ the id reported by lpq.
 
 <para>
 In order to match a 32-bit Windows jobid onto a 16-bit lanman print job
-id, smbd uses an in memory TDB to match the former to a number approriate
+id, smbd uses an in memory TDB to match the former to a number appropriate
 for old lanman clients.
 </para>
 
@@ -180,8 +180,8 @@ clients and not the actual listing from the "lpq command".
 The NT_DEVICEMODE stored as part of the printjob structure is used to
 store a pointer to a non-default DeviceMode associated with the print
 job.  The pointer will be non-null when the client included a Device
-Mode in the OpePrinterEx() call and subsequently submitted a job for
-printing on that sam handle.  If the client did not include a Device
+Mode in the OpenPrinterEx() call and subsequently submitted a job for
+printing on that same handle.  If the client did not include a Device
 Mode in the OpenPrinterEx() request, the nt_devmode field is NULL
 and the job has the printer's device mode associated with it by default.
 </para>
diff --git a/docs/docbook/devdoc/wins.sgml b/docs/docbook/devdoc/wins.sgml
new file mode 100644
index 0000000000..4b5f1e07c4
--- /dev/null
+++ b/docs/docbook/devdoc/wins.sgml
@@ -0,0 +1,79 @@
+<chapter id="wins">
+<chapterinfo>
+	<author>
+		<firstname>Gerald</firstname><surname>Carter</surname>
+	</author>
+	<pubdate>October 2002</pubdate>
+</chapterinfo>
+
+
+<title>Samba WINS Internals</title>
+
+
+<sect1>
+<title>WINS Failover</title>
+
+
+<para>
+The current Samba codebase possesses the capability to use groups of WINS
+servers that share a common namespace for NetBIOS name registration and 
+resolution.  The formal parameter syntax is
+</para>
+
+<para><programlisting>
+	WINS_SERVER_PARAM 	= SERVER [ SEPARATOR SERVER_LIST ]
+	WINS_SERVER_PARAM 	= &quot;wins server&quot;
+	SERVER 			= ADDR[:TAG]
+	ADDR 			= ip_addr | fqdn
+	TAG 			= string
+	SEPARATOR		= comma | \s+
+	SERVER_LIST		= SERVER [ SEPARATOR SERVER_LIST ]
+</programlisting></para>
+
+<para>
+A simple example of a valid wins server setting is
+</para>
+
+<para><programlisting>
+[global]
+	wins server = 192.168.1.2 192.168.1.3
+</programlisting></para>
+
+<para>
+In the event that no TAG is defined in for a SERVER in the list, smbd assigns a default
+TAG of &quot;*&quot;.  A TAG is used to group servers of a shared NetBIOS namespace together.  Upon
+startup, nmbd will attempt to register the netbios name value with one server in each
+tagged group.
+</para>
+
+<para>
+An example using tags to group WINS servers together is show here.  Note that the use of
+interface names in the tags is only by convention and is not a technical requirement.
+</para>
+
+
+<para><programlisting>
+[global]
+	wins server = 192.168.1.2:eth0 192.1:eth0 192.168.2.2:eth1
+</programlisting></para>
+
+<para>
+Using this configuration, nmbd would attempt to registry the server's NetBIOS name 
+with one WINS server in each group.  Because the &quot;eth0&quot; group has two servers, the 
+second server would only be used when a registration (or resolution) request to 
+the first server in that group timed out.
+</para>
+
+<para>
+NetBIOS name resolution follows a similar pattern as name registration.  When resolving 
+a NetBIOS name via WINS, smbd and other Samba programs will attempt to query a single WINS 
+server in a tagged group until either a positive response is obtained at least once or 
+until a server from every tagged group has responded negatively to the name query request.
+If a timeout occurs when querying a specific WINS server, that server is marked as down to 
+prevent further timeouts and the next server in the WINS group is contacted.  Once marked as 
+dead, Samba will not attempt to contact that server for name registration/resolution queries 
+for a period of 10 minutes.
+</para>
+
+</sect1>
+</chapter>