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-<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN">
-<HTML
-><HEAD
-><TITLE
->Portability</TITLE
-><META
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-CONTENT="Modular DocBook HTML Stylesheet Version 1.7"><LINK
-REL="HOME"
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-REL="PREVIOUS"
-TITLE="Migration from NT4 PDC to Samba-3 PDC"
-HREF="nt4migration.html"><LINK
-REL="NEXT"
-TITLE="Samba and other CIFS clients"
-HREF="other-clients.html"></HEAD
-><BODY
-CLASS="CHAPTER"
-BGCOLOR="#FFFFFF"
-TEXT="#000000"
-LINK="#0000FF"
-VLINK="#840084"
-ALINK="#0000FF"
-><DIV
-CLASS="NAVHEADER"
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-SUMMARY="Header navigation table"
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->SAMBA Project Documentation</TH
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-><HR
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-><DIV
-CLASS="CHAPTER"
-><H1
-><A
-NAME="PORTABILITY"
-></A
->Chapter 29. Portability</H1
-><DIV
-CLASS="TOC"
-><DL
-><DT
-><B
->Table of Contents</B
-></DT
-><DT
->29.1. <A
-HREF="portability.html#AEN4444"
->HPUX</A
-></DT
-><DT
->29.2. <A
-HREF="portability.html#AEN4450"
->SCO Unix</A
-></DT
-><DT
->29.3. <A
-HREF="portability.html#AEN4454"
->DNIX</A
-></DT
-><DT
->29.4. <A
-HREF="portability.html#AEN4483"
->RedHat Linux Rembrandt-II</A
-></DT
-><DT
->29.5. <A
-HREF="portability.html#AEN4489"
->AIX</A
-></DT
-><DT
->29.6. <A
-HREF="portability.html#AEN4495"
->Solaris</A
-></DT
-></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"
-><H1
-CLASS="SECT1"
-><A
-NAME="AEN4444"
->29.1. HPUX</A
-></H1
-><P
->HP's implementation of supplementary groups is, er, non-standard (for
-hysterical reasons). There are two group files, /etc/group and
-/etc/logingroup; the system maps UIDs to numbers using the former, but
-initgroups() reads the latter. Most system admins who know the ropes
-symlink /etc/group to /etc/logingroup (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 /etc/logingroup has what it considers to be an invalid
-ID, which means outside the range [0..UID_MAX], where UID_MAX is (I think)
-60000 currently on HP-UX. This precludes -2 and 65534, the usual 'nobody'
-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"
-><H1
-CLASS="SECT1"
-><A
-NAME="AEN4450"
->29.2. SCO Unix</A
-></H1
-><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 (ftp.sco.com, directory SLS, files uod385a.Z and uod385a.ltr.Z).</P
-></DIV
-><DIV
-CLASS="SECT1"
-><H1
-CLASS="SECT1"
-><A
-NAME="AEN4454"
->29.3. DNIX</A
-></H1
-><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
-><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$:
- clrl d0
- rts</PRE
-></P
-><P
->put this in the file <TT
-CLASS="FILENAME"
->seteuid.s</TT
->:</P
-><P
-><PRE
-CLASS="PROGRAMLISTING"
-> .globl _seteuid
-_seteuid:
- moveq #47,d0
- movl #100,a0
- moveq #0,d1
- movl 4(sp),a1
- trap #9
- bccs 1$
- jmp cerror
-1$:
- clrl d0
- rts</PRE
-></P
-><P
->after creating the above files you then assemble them using</P
-><P
-><B
-CLASS="COMMAND"
->as seteuid.s</B
-></P
-><P
-><B
-CLASS="COMMAND"
->as setegid.s</B
-></P
-><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
-><P
-><PRE
-CLASS="PROGRAMLISTING"
->LIBSM = setegid.o seteuid.o -ln</PRE
-></P
-><P
->
-You should then remove the line:</P
-><P
-><PRE
-CLASS="PROGRAMLISTING"
->#define NO_EID</PRE
-></P
-><P
->from the DNIX section of <TT
-CLASS="FILENAME"
->includes.h</TT
-></P
-></DIV
-><DIV
-CLASS="SECT1"
-><H1
-CLASS="SECT1"
-><A
-NAME="AEN4483"
->29.4. RedHat Linux Rembrandt-II</A
-></H1
-><P
->By default RedHat Rembrandt-II during installation adds an
-entry to /etc/hosts as follows:
-<PRE
-CLASS="PROGRAMLISTING"
-> 127.0.0.1 loopback "hostname"."domainname"</PRE
-></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"
-><H1
-CLASS="SECT1"
-><A
-NAME="AEN4489"
->29.5. AIX</A
-></H1
-><DIV
-CLASS="SECT2"
-><H2
-CLASS="SECT2"
-><A
-NAME="AEN4491"
->29.5.1. Sequential Read Ahead</A
-></H2
-><P
->Disabling Sequential Read Ahead using <KBD
-CLASS="USERINPUT"
->vmtune -r 0</KBD
-> improves
-samba performance significally.</P
-></DIV
-></DIV
-><DIV
-CLASS="SECT1"
-><H1
-CLASS="SECT1"
-><A
-NAME="AEN4495"
->29.6. Solaris</A
-></H1
-><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 woul 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
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-CLASS="NAVFOOTER"
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