From: Pavel Machek <pavel@ucw.cz>
To: Lukasz Stelmach <stlman@poczta.fm>
Cc: linux-kernel@vger.kernel.org
Subject: Re: quantum capabilities
Date: Thu, 20 Apr 2006 21:18:23 +0000 [thread overview]
Message-ID: <20060420211822.GC2360@ucw.cz> (raw)
In-Reply-To: <444650E1.5020403@poczta.fm>
On Wed 19-04-06 17:01:53, Lukasz Stelmach wrote:
> Greetings All.
>
> I've found a strange phenomenon associated with capabilities. It seems to be a
> quantum like.
>
> when I run (as root)
>
> delfin:~# /usr/sbin/execcap '= cap_net_raw=ep' /bin/sh -c 'getpcaps $$'
> Capabilities for `2438': =ep cap_setpcap-ep
>
> I don't know what really happens to those capablities I zero. And I can't really
> figure out for when I try the wavefunction collapses
>
> delfin:~# strace -o /dev/null /usr/sbin/execcap '= cap_net_raw=ep' /bin/sh -c \
> 'getpcaps $$'
> Capabilities for `2461': = cap_net_raw+ep
>
> Strange isn't it? Does it mean that processes can't really drop their privileges?
Is execcap setuid? strace does not work over setuid...
Pavel
--
Thanks, Sharp!
next prev parent reply other threads:[~2006-04-22 19:32 UTC|newest]
Thread overview: 3+ messages / expand[flat|nested] mbox.gz Atom feed top
2006-04-19 15:01 Lukasz Stelmach
2006-04-20 21:18 ` Pavel Machek [this message]
2006-04-23 9:41 ` Lukasz Stelmach
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