linux-kernel - Re: CAP_SYSLOG, 2.6.38 and user space

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Message-ID: <20110203151353.25f69343@lxorguk.ukuu.org.uk>
Date:	Thu, 3 Feb 2011 15:13:53 +0000
From:	Alan Cox <alan@...rguk.ukuu.org.uk>
To:	Gergely Nagy <algernon@...abit.hu>
Cc:	Linux Kernel Mailing List <linux-kernel@...r.kernel.org>,
	"Serge E. Hallyn" <serge@...lyn.com>,
	James Morris <jmorris@...ei.org>
Subject: Re: CAP_SYSLOG, 2.6.38 and user space

On Thu, 03 Feb 2011 12:39:37 +0100
Gergely Nagy <algernon@...abit.hu> wrote:

> Hi!
> 
> Back in november, a patch was merged into the kernel (in  commit
> ce6ada35bdf710d16582cc4869c26722547e6f11), that splits CAP_SYSLOG out of
> CAP_SYS_ADMIN.
> 
> Sadly, this has an unwelcomed consequence, that any userspace syslogd
> that formerly used CAP_SYS_ADMIN will stop working, unless upgraded, or
> otherwise adapted to the change.

Then the patch should probably be reverted as it's breaking an existing
userspace API (or the kernel should accept either SYSLOG || ADMIN in
those cases that check is made so that the old right covers it as well as
the split out one)

Alan


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