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Re: [PATCH] add some long-missing capabilities to fs_mask

From:  Valdis.Kletnieks-AT-vt.edu
To:  "Serge E. Hallyn" <serue-AT-us.ibm.com>
Subject:  Re: [PATCH] add some long-missing capabilities to fs_mask
Date:  Mon, 13 Apr 2009 17:03:28 -0400
Message-ID:  <13502.1239656608@turing-police.cc.vt.edu>
Cc:  Linus Torvalds <torvalds-AT-linux-foundation.org>, mtk.manpages-AT-gmail.com, Stephen Smalley <sds-AT-epoch.ncsc.mil>, Andrew Morgan <morgan-AT-kernel.org>, linux-security-module-AT-vger.kernel.org, lkml <linux-kernel-AT-vger.kernel.org>, linux-nfs-AT-vger.kernel.org, Igor Zhbanov <izh1979-AT-gmail.com>, "J. Bruce Fields" <bfields-AT-citi.umich.edu>, stable-AT-kernel.org, linux-api-AT-vger.kernel.org, Chris Wright <chrisw-AT-sous-sol.org>
Archive-link:  Article

On Mon, 13 Apr 2009 09:56:14 CDT, "Serge E. Hallyn" said:
> When POSIX capabilities were introduced during the 2.1 Linux
> cycle, the fs mask, which represents the capabilities which having
> fsuid==0 is supposed to grant, did not include CAP_MKNOD and
> CAP_LINUX_IMMUTABLE.  However, before capabilities the privilege
> to call these did in fact depend upon fsuid==0.

Wow. How did this manage to stay un-noticed for this long?


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