From: Ivan Gyurdiev <ivangurdiev@attbi.com>
To: LKML <linux-kernel@vger.kernel.org>
Subject: OT: Authentication question...
Date: Tue, 6 Aug 2002 00:48:07 -0400 [thread overview]
Message-ID: <200208060048.07267.ivangurdiev@attbi.com> (raw)
This is off-topic, but since people on this list
are so much better educated than myself on Linux issues,
I thought I could seek help.
My system will reject any attempt
to login as a user other than root:
[root@cobra root]# su phantom
could not open session
[root@cobra root]# su ftp
could not open session
[root@cobra root]# su lp
could not open session
[root@cobra root]# su root
[root@cobra root]#
An strace showed the following notable difference between a working backup
system and the broken one:
Broken:
setfsuid32(0x1f4) = 0
setfsgid32(0x1f4) = 0
open("/etc/passwd", O_RDONLY) = -1 EACCES (Permission denied)
Working:
setfsuid32(0x1f4) = 0
setfsgid32(0x1f4) = 0
open("/etc/passwd", O_RDONLY) = 3
Which makes me very confused, since /etc/passwd is a world-readable file.
Any ideas what could be the problem?
Thank you for any help in advance...
reply other threads:[~2002-08-07 4:39 UTC|newest]
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