samba not using nscd (fwd)

[Jelmer Vernooij]

Isn't it up to libc to decide whether or not to use nscd? Or to nscd?
Afaik there is no way that samba can actually _know_ about nscd.

Jelmer

On Thu, Feb 27, 2003 at 07:51:38AM -0800, Andrew Morgan wrote about 'samba not using nscd (fwd)':

> Reposting for the third time...  Please let me know if there is more or
> different information needed, or where I might look to debug this further
> myself.

> Thanks,
> 	Andy

> ---------- Forwarded message ----------
> Date: Tue, 21 Jan 2003 13:37:43 -0800 (PST)
> From: Andrew Morgan <morgan at orst.edu>
> To: samba-technical at samba.org
> Subject: samba not using nscd


> I've got samba installed on several different machines in my environment,
> but samba on the linux machines doesn't seem to use nscd all the time.  On
> my RedHat 7.1 machine running samba 2.2.7, it uses nscd for name lookups
> initially, then decides to bypass nscd and lookup names directly.  I have
> strace output showing this, if someone would like to look at it.  This
> also happens on a Debian stable machine running samba 2.2.3a-12.

> On my Solaris 8 machine running samba 2.2.7a, it correctly uses nscd for
> all lookups.

> You ask, why do I care?  I care because I am using nss_ldap on all of
> these machines.  When it bypasses nscd, I get another connection to the
> ldap server for every smbd process, which I'd like to avoid.

> Could this be related to the user-switching between root and the
> connected user that happens in samba?  The first time the smbd process
> stops using nscd shows the following in the strace file:

> fcntl64(4, F_SETLKW64, {type=F_UNLCK, whence=SEEK_SET, start=592, len=1}, 0xbfffdca0) = 0
> stat64("/users/u2/b/bishopc", 0xbfffe1e0) = -1 ENOENT (No such file or directory)
> geteuid32()                             = 0
> getegid32()                             = 0
> getgroups32(0, [])                      = 0
> geteuid32()                             = 0
> getegid32()                             = 0
> setgroups32(0, [])                      = 0
> setresgid32(rgid 4294967295, egid 0, sgid 4294967295) = 0
> getegid32()                             = 0
> setresuid32(ruid 4294967295, euid 0, suid 4294967295) = 0
> geteuid32()                             = 0
> open("/etc/nsswitch.conf", O_RDONLY)    = 19

> at which point it starts loading the libnss_* libraries, etc, rather than
> using the nscd socket which it has previously used.

> If there is more information needed to track this down, just let me know
> what to provide...

> Thanks,
> Andy Morgan
> Central Computing
> Oregon State University

-- 
Jelmer Vernooij <jelmer at nl.linux.org> - http://nl.linux.org/~jelmer/
 20:15:28 up 1 day,  6:28, 12 users,  load average: 0.09, 0.13, 0.05
-------------- next part --------------
A non-text attachment was scrubbed...
Name: not available
Type: application/pgp-signature
Size: 189 bytes
Desc: not available
Url : http://lists.samba.org/archive/samba-technical/attachments/20030227/49a4d045/attachment.bin