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-<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org/TR/html4/loose.dtd">
-<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">&lt;<a href="mailto:jelmer@samba.org">jelmer@samba.org</a>&gt;</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#id3012634">HPUX</a></dt><dt><a href="Portability.html#id3012719">SCO Unix</a></dt><dt><a href="Portability.html#id3012747">DNIX</a></dt><dt><a href="Portability.html#id3012917">RedHat Linux Rembrandt-II</a></dt><dt><a href="Portability.html#id3012960">AIX</a></dt><dd><dl><dt><a href="Portability.html#id3012967">Sequential Read Ahead</a></dt></dl></dd><dt><a href="Portability.html#id3012993">Solaris</a></dt><dd><dl><dt><a href="Portability.html#id3013000">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="id3012634"></a>HPUX</h2></div></div><div></div></div><p>
-HP's implementation of supplementary groups is, er, non-standard (for
-hysterical 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 doesn't work for reasons too stupid 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 that the programs that are failing
-to initgroups() be 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 HPUX 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="id3012719"></a>SCO Unix</h2></div></div><div></div></div><p>
-If you run an old version of SCO Unix then 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 (<a href="ftp://ftp.sco.com/" target="_top">ftp.sco.com</a>, directory SLS,
-files uod385a.Z and uod385a.ltr.Z).
-</p></div><div class="sect1" lang="en"><div class="titlepage"><div><div><h2 class="title" style="clear: both"><a name="id3012747"></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, some things still won't 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.
-</p><p>
-put this 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 xmlns:ns102="" class="sect1" lang="en"><div class="titlepage"><div><div><h2 class="title" style="clear: both"><a name="id3012917"></a>RedHat Linux Rembrandt-II</h2></div></div><div></div></div><ns102:p>
-By default RedHat Rembrandt-II during installation adds an
-entry to <tt class="filename">/etc/hosts</tt> as follows:
-</ns102:p><pre class="programlisting">
- 127.0.0.1 loopback &quot;hostname&quot;.&quot;domainname&quot;
-</pre><ns102:p>
-</ns102: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 therefor 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="id3012960"></a>AIX</h2></div></div><div></div></div><div class="sect2" lang="en"><div class="titlepage"><div><div><h3 class="title"><a name="id3012967"></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="id3012993"></a>Solaris</h2></div></div><div></div></div><div class="sect2" lang="en"><div class="titlepage"><div><div><h3 class="title"><a name="id3013000"></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</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>