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[Bug nscd/489] New: nscd problem with multiple passwd databases
- From: "mhaverkamp at kcp dot com" <sourceware-bugzilla at sources dot redhat dot com>
- To: glibc-bugs at sources dot redhat dot com
- Date: 28 Oct 2004 15:58:55 -0000
- Subject: [Bug nscd/489] New: nscd problem with multiple passwd databases
- Reply-to: sourceware-bugzilla at sources dot redhat dot com
nscd's behavior is inconsistent when there are multiple passwd databases defined
in /etc/nsswitch.conf and the 2 database have different data for the same UID.
Consider the following:
/etc/nsswitch.conf contains:
passwd: compat ldap
the compat database (/etc/passwd) contains:
testuser:x:54366:54366:Fred Smith:/home/u54366:/bin/bash
the ldap passwd database contains:
u54366:x:54366:54366:Fred Smith:/home/u54366:/bin/bash
The behavior without nscd (correct):
# getent passwd 54366
testuser:x:54366:54366:Fred Smith:/home/u54366:/bin/bash
# su - u54366
$ exit
logout
# getent passwd 54366
testuser:x:54366:54366:Fred Smith:/home/u54366:/bin/bash
The behavior with nscd running (incorrect):
# getent passwd 54366
testuser:x:54366:54366:Fred Smith:/home/u54366:/bin/bash
# su - u54366
$ exit
logout
# getent passwd 54366
u54366:x:54366:54366:Fred Smith:/home/u54366:/bin/bash
When nscd is running, doing a "su" to a user causes nscd to cache the mapping of
their uid to userid, even though there is a different userid associated with
that uid in /etc/passwd. Because "compat" is listed first in
/etc/nsswitch.conf, I expect the /etc/passwd entry to take precidence.
--
Summary: nscd problem with multiple passwd databases
Product: glibc
Version: unspecified
Status: NEW
Severity: normal
Priority: P2
Component: nscd
AssignedTo: drepper at redhat dot com
ReportedBy: mhaverkamp at kcp dot com
CC: glibc-bugs at sources dot redhat dot com
GCC build triplet: i686-pc-linux-gnulibc2
GCC host triplet: i686-pc-linux-gnulibc2
GCC target triplet: i686-pc-linux-gnulibc2
http://sources.redhat.com/bugzilla/show_bug.cgi?id=489
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