From: Jason Kohles <jkohles@redhat.com>
To: Keith Warno <krjw@optonline.net>
Cc: Linux Kernel List <linux-kernel@vger.kernel.org>
Subject: Re: 2.4.16 + strace 4.4 + setuid programs
Date: Thu, 6 Dec 2001 09:56:04 -0600 [thread overview]
Message-ID: <20011206095604.B1975@traveller.localdomain> (raw)
In-Reply-To: <Pine.LNX.4.40.0112060104140.32509-100000@behemoth.hobitch.com>
In-Reply-To: <Pine.LNX.4.40.0112060104140.32509-100000@behemoth.hobitch.com>; from krjw@optonline.net on Thu, Dec 06, 2001 at 01:09:02AM -0500
On Thu, Dec 06, 2001 at 01:09:02AM -0500, Keith Warno wrote:
> Hmm. Is strace supposed to be capable of tracing setuid programs (ie,
> su) when executed by mortal users? I always thought this was a big
> no-no.
>
You can trace them, but strace will ignore the setuid bit on the process,
for example if you strace su, you will see a lot of permission denied, as
it won't actually run as root, and won't be able to open things like
/etc/shadow or /proc/self/fd/0. If you want to strace setuid things and
have the setuid bit honored, you have to run strace as root with the -u
option.
--
Jason Kohles jkohles@redhat.com
Senior System Architect (703)786-8036 (cellular)
Red Hat Professional Consulting (703)456-2940 (office)
next prev parent reply other threads:[~2001-12-06 15:55 UTC|newest]
Thread overview: 3+ messages / expand[flat|nested] mbox.gz Atom feed top
[not found] <Pine.LNX.4.40.0112060104140.32509-100000@behemoth.hobitch.com>
2001-12-06 6:52 ` Damian M Gryski
2001-12-06 15:56 ` Jason Kohles [this message]
2001-12-06 17:25 Manfred Spraul
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