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diff --git a/docs/htmldocs/Portability.html b/docs/htmldocs/Portability.html new file mode 100644 index 0000000000..3451a8bd17 --- /dev/null +++ b/docs/htmldocs/Portability.html @@ -0,0 +1,132 @@ +<html><head><meta http-equiv="Content-Type" content="text/html; charset=ISO-8859-1"><title>Chapter 37. Portability</title><link rel="stylesheet" href="samba.css" type="text/css"><meta name="generator" content="DocBook XSL Stylesheets V1.60.1"><link rel="home" href="index.html" title="SAMBA Project Documentation"><link rel="up" href="Appendixes.html" title="Part VI. Appendixes"><link rel="previous" href="compiling.html" title="Chapter 36. How to Compile Samba"><link rel="next" href="Other-Clients.html" title="Chapter 38. Samba and Other CIFS Clients"></head><body bgcolor="white" text="black" link="#0000FF" vlink="#840084" alink="#0000FF"><div class="navheader"><table width="100%" summary="Navigation header"><tr><th colspan="3" align="center">Chapter 37. Portability</th></tr><tr><td width="20%" align="left"><a accesskey="p" href="compiling.html">Prev</a> </td><th width="60%" align="center">Part VI. Appendixes</th><td width="20%" align="right"> <a accesskey="n" href="Other-Clients.html">Next</a></td></tr></table><hr></div><div class="chapter" lang="en"><div class="titlepage"><div><div><h2 class="title"><a name="Portability"></a>Chapter 37. Portability</h2></div><div><div class="author"><h3 class="author"><span class="firstname">Jelmer</span> <span class="othername">R.</span> <span class="surname">Vernooij</span></h3><div class="affiliation"><span class="orgname">The Samba Team<br></span><div class="address"><p><tt class="email"><<a href="mailto:jelmer@samba.org">jelmer@samba.org</a>></tt></p></div></div></div></div><div><div class="author"><h3 class="author"><span class="firstname">John</span> <span class="othername">H.</span> <span class="surname">Terpstra</span></h3><div class="affiliation"><span class="orgname">Samba Team<br></span><div class="address"><p><tt class="email"><<a href="mailto:jht@samba.org">jht@samba.org</a>></tt></p></div></div></div></div></div><div></div></div><div class="toc"><p><b>Table of Contents</b></p><dl><dt><a href="Portability.html#id2974513">HPUX</a></dt><dt><a href="Portability.html#id2974600">SCO UNIX</a></dt><dt><a href="Portability.html#id2974655">DNIX</a></dt><dt><a href="Portability.html#id2974825">Red Hat Linux</a></dt><dt><a href="Portability.html#id2974869">AIX</a></dt><dd><dl><dt><a href="Portability.html#id2974876">Sequential Read Ahead</a></dt></dl></dd><dt><a href="Portability.html#id2974902">Solaris</a></dt><dd><dl><dt><a href="Portability.html#id2974909">Locking Improvements</a></dt><dt><a href="Portability.html#winbind-solaris9">Winbind on Solaris 9</a></dt></dl></dd></dl></div><p>Samba works on a wide range of platforms but the interface all the +platforms provide is not always compatible. This chapter contains +platform-specific information about compiling and using Samba.</p><div class="sect1" lang="en"><div class="titlepage"><div><div><h2 class="title" style="clear: both"><a name="id2974513"></a>HPUX</h2></div></div><div></div></div><p> +HP's implementation of supplementary groups is non-standard (for +historical reasons). There are two group files, <tt class="filename">/etc/group</tt> and +<tt class="filename">/etc/logingroup</tt>; the system maps UIDs to numbers using the former, but +initgroups() reads the latter. Most system admins who know the ropes +symlink <tt class="filename">/etc/group</tt> to <tt class="filename">/etc/logingroup</tt> +(hard link does not work for reasons too obtuse to go into here). initgroups() will complain if one of the +groups you're in in <tt class="filename">/etc/logingroup</tt> has what it considers to be an invalid +ID, which means outside the range <tt class="constant">[0..UID_MAX]</tt>, where <tt class="constant">UID_MAX</tt> is (I think) +60000 currently on HP-UX. This precludes -2 and 65534, the usual <tt class="constant">nobody</tt> +GIDs. +</p><p> +If you encounter this problem, make sure the programs that are failing +to initgroups() are run as users, not in any groups with GIDs outside the +allowed range. +</p><p>This is documented in the HP manual pages under setgroups(2) and passwd(4). +</p><p> +On HP-UX you must use gcc or the HP ANSI compiler. The free compiler +that comes with HP-UX is not ANSI compliant and cannot compile Samba. +</p></div><div class="sect1" lang="en"><div class="titlepage"><div><div><h2 class="title" style="clear: both"><a name="id2974600"></a>SCO UNIX</h2></div></div><div></div></div><p> +If you run an old version of SCO UNIX, you may need to get important +TCP/IP patches for Samba to work correctly. Without the patch, you may +encounter corrupt data transfers using Samba. +</p><p> +The patch you need is UOD385 Connection Drivers SLS. It is available from +SCO (<ulink url="ftp://ftp.sco.com/">ftp.sco.com</ulink>, directory SLS, +files uod385a.Z and uod385a.ltr.Z). +</p><p> +The information provided here refers to an old version of SCO UNIX. If you require +binaries for more recent SCO UNIX products, please contact SCO to obtain packages that are +ready to install. You should also verify with SCO that your platform is up-to-date for the +binary packages you will install. This is important if you wish to avoid data corruption +problems with your installation. To build Samba for SCO UNIX products may +require significant patching of Samba source code. It is much easier to obtain binary +packages directly from SCO. +</p></div><div class="sect1" lang="en"><div class="titlepage"><div><div><h2 class="title" style="clear: both"><a name="id2974655"></a>DNIX</h2></div></div><div></div></div><p> +DNIX has a problem with seteuid() and setegid(). These routines are +needed for Samba to work correctly, but they were left out of the DNIX +C library for some reason. +</p><p> +For this reason Samba by default defines the macro NO_EID in the DNIX +section of includes.h. This works around the problem in a limited way, +but it is far from ideal, and some things still will not work right. +</p><p> +To fix the problem properly, you need to assemble the following two +functions and then either add them to your C library or link them into +Samba. Put the following in the file <tt class="filename">setegid.s</tt>: +</p><pre class="programlisting"> + .globl _setegid +_setegid: + moveq #47,d0 + movl #100,a0 + moveq #1,d1 + movl 4(sp),a1 + trap #9 + bccs 1$ + jmp cerror +1$: + clrl d0 + rts +</pre><p> +Put this in the file <tt class="filename">seteuid.s</tt>: +</p><pre class="programlisting"> + .globl _seteuid +_seteuid: + moveq #47,d0 + movl #100,a0 + moveq #0,d1 + movl 4(sp),a1 + trap #9 + bccs 1$ + jmp cerror +1$: + clrl d0 + rts +</pre><p> +After creating the above files, you then assemble them using +</p><pre class="screen"> +<tt class="prompt">$ </tt><b class="userinput"><tt>as seteuid.s</tt></b> +<tt class="prompt">$ </tt><b class="userinput"><tt>as setegid.s</tt></b> +</pre><p> +that should produce the files <tt class="filename">seteuid.o</tt> and +<tt class="filename">setegid.o</tt> +</p><p> +Then you need to add these to the LIBSM line in the DNIX section of +the Samba Makefile. Your LIBSM line will then look something like this: +</p><pre class="programlisting"> +LIBSM = setegid.o seteuid.o -ln +</pre><p> +You should then remove the line: +</p><pre class="programlisting"> +#define NO_EID +</pre><p>from the DNIX section of <tt class="filename">includes.h</tt>.</p></div><div class="sect1" lang="en"><div class="titlepage"><div><div><h2 class="title" style="clear: both"><a name="id2974825"></a>Red Hat Linux</h2></div></div><div></div></div><p> +By default during installation, some versions of Red Hat Linux add an +entry to <tt class="filename">/etc/hosts</tt> as follows: +</p><pre class="programlisting"> + 127.0.0.1 loopback "hostname"."domainname" +</pre><p> +</p><p> +This causes Samba to loop back onto the loopback interface. +The result is that Samba fails to communicate correctly with +the world and therefore may fail to correctly negotiate who +is the master browse list holder and who is the master browser. +</p><p> +Corrective Action: Delete the entry after the word "loopback" +in the line starting 127.0.0.1. +</p></div><div class="sect1" lang="en"><div class="titlepage"><div><div><h2 class="title" style="clear: both"><a name="id2974869"></a>AIX</h2></div></div><div></div></div><div class="sect2" lang="en"><div class="titlepage"><div><div><h3 class="title"><a name="id2974876"></a>Sequential Read Ahead</h3></div></div><div></div></div><p> +Disabling Sequential Read Ahead using <b class="userinput"><tt>vmtune -r 0</tt></b> improves +Samba performance significantly. +</p></div></div><div class="sect1" lang="en"><div class="titlepage"><div><div><h2 class="title" style="clear: both"><a name="id2974902"></a>Solaris</h2></div></div><div></div></div><div class="sect2" lang="en"><div class="titlepage"><div><div><h3 class="title"><a name="id2974909"></a>Locking Improvements</h3></div></div><div></div></div><p>Some people have been experiencing problems with F_SETLKW64/fcntl +when running Samba on Solaris. The built-in file locking mechanism was +not scalable. Performance would degrade to the point where processes would +get into loops of trying to lock a file. It would try a lock, then fail, +then try again. The lock attempt was failing before the grant was +occurring. So the visible manifestation of this would be a handful of +processes stealing all of the CPU, and when they were trussed they would +be stuck if F_SETLKW64 loops. +</p><p> +Sun released patches for Solaris 2.6, 8, and 9. The patch for Solaris 7 +has not been released yet. +</p><p> +The patch revision for 2.6 is 105181-34, for 8 is 108528-19 and for 9 is 112233-04. +</p><p> +After the install of these patches, it is recommended to reconfigure +and rebuild Samba. +</p><p>Thanks to Joe Meslovich for reporting this.</p></div><div class="sect2" lang="en"><div class="titlepage"><div><div><h3 class="title"><a name="winbind-solaris9"></a>Winbind on Solaris 9</h3></div></div><div></div></div><p> +Nsswitch on Solaris 9 refuses to use the Winbind NSS module. This behavior +is fixed by Sun in patch 113476-05, which as of March 2003, is not in any +roll-up packages. +</p></div></div></div><div class="navfooter"><hr><table width="100%" summary="Navigation footer"><tr><td width="40%" align="left"><a accesskey="p" href="compiling.html">Prev</a> </td><td width="20%" align="center"><a accesskey="u" href="Appendixes.html">Up</a></td><td width="40%" align="right"> <a accesskey="n" href="Other-Clients.html">Next</a></td></tr><tr><td width="40%" align="left" valign="top">Chapter 36. How to Compile Samba </td><td width="20%" align="center"><a accesskey="h" href="index.html">Home</a></td><td width="40%" align="right" valign="top"> Chapter 38. Samba and Other CIFS Clients</td></tr></table></div></body></html> |