[Samba] Smbd 3.0.13 dies when smb.conf has winbind separator = \

[Greg Scott]

I am trying to get windind to work so my domain users can touch shares
on this Linux box without being prompted for credentials.   I put these
in nsswitch.conf:

  passwd:        files winbind
  group:         files winbind

Then I did this:

cp /usr/src/samba-3.0.13/source/nsswitch/libnss_winbind.so /lib
ln --symbolic /lib/libnss_windbind.so /lib/libnss_winbind.so.2

Make libnss_windbind available to winbindd like this:
/sbin/ldconfig -v | grep winbind

mkdir /var/log/samba

I fire up the daemons like this:

/usr/local/samba/sbin/nmbd
/usr/local/samba/sbin/smbd
/usr/local/samba/sbin/winbindd

And ps -ax | grep smbd shows smbd is not running.

After hours and hours of troubleshooting, I found if I change this line
in /usr/local/samba/lib/smb.conf:
winbind separator = \

To this (note the hashmark - commented out):
#winbind separator = \

Smbd does not die.  However, it also seems to not want to call winbind
to authenticate my domain users.  

I am using Samba 3.0.13, built from source, with MIT Kervberos 1.4, also
built from source, on RedHat Linux 9.0.   My A/D domain is Windows 2003.

I started up smbd with -d 10 (debug level 10) with and without that line
commented out, so I have these debug traces with and without.  

I would really appreciate any advice from the community.

Thanks

- Greg Scott
  GregScott at InfraSupportEtc.com

Here are the last few lines of the log file with that separator line in
place in smb.conf, just before smbd dies:

[root at infra-fw samba]# cd /var/log/samba
[root at infra-fw samba]# tail log.smbd
[2005/04/02 21:21:13, 3] smbd/sec_ctx.c:pop_sec_ctx(386)
  pop_sec_ctx (0, 0) - sec_ctx_stack_ndx = 0
[2005/04/02 21:21:13, 10] auth/auth_util.c:get_user_groups(714)
  get_user_groups: winbind_getgroups(nobody): result = FAIL
[2005/04/02 21:21:13, 4] auth/auth_util.c:add_user_groups(796)
  get_user_groups_from_local_sam failed
[2005/04/02 21:21:13, 5] auth/auth_util.c:free_server_info(1406)
  attempting to free (and zero) a server_info structure
[2005/04/02 21:21:13, 5] auth/auth_util.c:free_server_info(1406)
  attempting to free (and zero) a server_info structure
[root at infra-fw samba]# 

Here is the global section of smb.conf (Although I built from source, I
started with the smb.conf  packaged in the RPM.  Yes, I removed the RPM
(rpm -e) before building from source.  I can't use the RPM because I
need to authenticate with a Win2003 domain and the version of Kerberos
packaged with RH9.0 doesn't work.)

[root at infra-fw lib]# cd /usr/local/samba/lib
[root at infra-fw lib]# cat smb.conf
# This is the main Samba configuration file. You should read the
# smb.conf(5) manual page in order to understand the options listed
# here. Samba has a huge number of configurable options (perhaps too
# many!) most of which are not shown in this example
#
# Any line which starts with a ; (semi-colon) or a # (hash) 
# is a comment and is ignored. In this example we will use a #
# for commentry and a ; for parts of the config file that you
# may wish to enable
#
# NOTE: Whenever you modify this file you should run the command
"testparm"
# to check that you have not made any basic syntactic errors. 
#
#======================= Global Settings
=====================================
[global]

# workgroup = NT-Domain-Name or Workgroup-Name
   workgroup = infrasupportetc
netbios name = SQUIDTEST
realm = INFRASUPPORTETC.COM

# server string is the equivalent of the NT Description field
   server string = Greg squidtest Samba Server

# This option is important for security. It allows you to restrict
# connections to machines which are on your local network. The
# following example restricts access to two C class networks and
# the "loopback" interface. For more examples of the syntax see
# the smb.conf man page
;   hosts allow = 192.168.1. 192.168.2. 127.

# if you want to automatically load your printer list rather
# than setting them up individually then you'll need this
   printcap name = /etc/printcap
   load printers = yes

# It should not be necessary to spell out the print system type unless
# yours is non-standard. Currently supported print systems include:
# bsd, sysv, plp, lprng, aix, hpux, qnx
;   printing = bsd

# Uncomment this if you want a guest account, you must add this to
/etc/passwd
# otherwise the user "nobody" is used
;  guest account = pcguest

# this tells Samba to use a separate log file for each machine
# that connects
   # log file = /var/log/samba/%m.log
# all log information in one file
   log file = /var/log/samba/log.smbd

# Put a capping on the size of the log files (in Kb).
   max log size = 50

# Security mode. Most people will want user level security. See
# security_level.txt for details.
   security = ADS
# Use password server option only with security = server

;  password server = 10.10.10.100

# Password Level allows matching of _n_ characters of the password for
# all combinations of upper and lower case.
;  password level = 8
;  username level = 8

# You may wish to use password encryption. Please read
# ENCRYPTION.txt, Win95.txt and WinNT.txt in the Samba documentation.
# Do not enable this option unless you have read those documents
;  encrypt passwords = yes
;  smb passwd file = /etc/samba/smbpasswd

encrypt passwords = yes

# idmap uid and idmap gid are aliases for
# winbind uid and winbid gid, respectively
idmap uid = 10000-20000
idmap gid = 10000-20000
winbind enum users = yes
winbind enum groups = yes

template shell = /bin/bash
winbind use default domain = Yes
winbind nested groups = Yes
winbind separator = \

# The following are needed to allow password changing from Windows to
# update the Linux system password also.
# NOTE: Use these with 'encrypt passwords' and 'smb passwd file' above.
# NOTE2: You do NOT need these to allow workstations to change only
#        the encrypted SMB passwords. They allow the Unix password
#        to be kept in sync with the SMB password.
;  unix password sync = Yes
;  passwd program = /usr/bin/passwd %u
;  passwd chat = *New*UNIX*password* %n\n *ReType*new*UNIX*password*
%n\n *passwd:*all*authentication*tokens*updated*successfully*

# Unix users can map to different SMB User names
;  username map = /etc/samba/smbusers

# Using the following line enables you to customise your configuration
# on a per machine basis. The %m gets replaced with the netbios name
# of the machine that is connecting
;   include = /etc/samba/smb.conf.%m

# Most people will find that this option gives better performance.
# See speed.txt and the manual pages for details
   socket options = TCP_NODELAY SO_RCVBUF=8192 SO_SNDBUF=8192

# Configure Samba to use multiple interfaces
# If you have multiple network interfaces then you must list them
# here. See the man page for details.
;   interfaces = 192.168.12.2/24 192.168.13.2/24 

interfaces = 10.10.10.2

# Configure remote browse list synchronisation here
#  request announcement to, or browse list sync from:
#       a specific host or from / to a whole subnet (see below)
;   remote browse sync = 192.168.3.25 192.168.5.255
# Cause this host to announce itself to local subnets here
;   remote announce = 192.168.1.255 192.168.2.44

# Browser Control Options:
# set local master to no if you don't want Samba to become a master
# browser on your network. Otherwise the normal election rules apply
;   local master = no

# OS Level determines the precedence of this server in master browser
# elections. The default value should be reasonable
;   os level = 33

# Domain Master specifies Samba to be the Domain Master Browser. This
# allows Samba to collate browse lists between subnets. Don't use this
# if you already have a Windows NT domain controller doing this job
;   domain master = yes 

# Preferred Master causes Samba to force a local browser election on
startup
# and gives it a slightly higher chance of winning the election
;   preferred master = yes

# Enable this if you want Samba to be a domain logon server for 
# Windows95 workstations. 
;   domain logons = yes

# if you enable domain logons then you may want a per-machine or
# per user logon script
# run a specific logon batch file per workstation (machine)
;   logon script = %m.bat
# run a specific logon batch file per username
;   logon script = %U.bat

# Where to store roving profiles (only for Win95 and WinNT)
#        %L substitutes for this servers netbios name, %U is username
#        You must uncomment the [Profiles] share below
;   logon path = \\%L\Profiles\%U

# All NetBIOS names must be resolved to IP Addresses
# 'Name Resolve Order' allows the named resolution mechanism to be
specified
# the default order is "host lmhosts wins bcast". "host" means use the
unix
# system gethostbyname() function call that will use either /etc/hosts
OR
# DNS or NIS depending on the settings of /etc/host.config,
/etc/nsswitch.conf
# and the /etc/resolv.conf file. "host" therefore is system
configuration
# dependant. This parameter is most often of use to prevent DNS lookups
# in order to resolve NetBIOS names to IP Addresses. Use with care!
# The example below excludes use of name resolution for machines that
are NOT
# on the local network segment
# - OR - are not deliberately to be known via lmhosts or via WINS.
; name resolve order = wins lmhosts bcast

# Windows Internet Name Serving Support Section:
# WINS Support - Tells the NMBD component of Samba to enable it's WINS
Server
;   wins support = yes

# WINS Server - Tells the NMBD components of Samba to be a WINS Client
#       Note: Samba can be either a WINS Server, or a WINS Client, but
NOT both
;   wins server = w.x.y.z

# WINS Proxy - Tells Samba to answer name resolution queries on
# behalf of a non WINS capable client, for this to work there must be
# at least one  WINS Server on the network. The default is NO.
;   wins proxy = yes

# DNS Proxy - tells Samba whether or not to try to resolve NetBIOS names
# via DNS nslookups. The built-in default for versions 1.9.17 is yes,
# this has been changed in version 1.9.18 to no.
   dns proxy = no 

# Case Preservation can be handy - system default is _no_
# NOTE: These can be set on a per share basis
;  preserve case = no
;  short preserve case = no
# Default case is normally upper case for all DOS files
;  default case = lower
# Be very careful with case sensitivity - it can break things!
;  case sensitive = no

(Share definitions snipped)