From: Andrew Morgan <morgan@kernel.org>
To: David Howells <dhowells@redhat.com>
Cc: viro@ftp.linux.org.uk, hch@infradead.org,
Trond.Myklebust@netapp.com, sds@tycho.nsa.gov,
casey@schaufler-ca.com, linux-kernel@vger.kernel.org,
selinux@tycho.nsa.gov, linux-security-module@vger.kernel.org
Subject: Re: [PATCH 3/3] CRED: Move the effective capabilities into the cred struct
Date: Wed, 19 Sep 2007 21:11:26 -0700 [thread overview]
Message-ID: <46F1F2EE.1010904@kernel.org> (raw)
In-Reply-To: <20070919161805.8334.96808.stgit@warthog.procyon.org.uk>
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David Howells wrote:
> Move the effective capabilities mask from the task struct into the credentials
> record.
>
> Note that the effective capabilities mask in the cred struct shadows that in
> the task_struct because a thread can have its capabilities masks changed by
> another thread. The shadowing is performed by update_current_cred() which is
> invoked on entry to any system call that might need it.
OOC If we were to simply drop support for one process changing the
capabilities of another, would we need this patch?
Thanks
Andrew
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next prev parent reply other threads:[~2007-09-20 4:11 UTC|newest]
Thread overview: 22+ messages / expand[flat|nested] mbox.gz Atom feed top
2007-09-19 16:17 [PATCH 0/3] Introduce credential record David Howells
2007-09-19 16:17 ` [PATCH 1/3] CRED: Introduce a COW credentials record David Howells
2007-09-19 16:18 ` [PATCH 2/3] CRED: Split the task security data and move part of it into struct cred David Howells
2007-09-19 17:28 ` Casey Schaufler
2007-09-19 22:57 ` David Howells
2007-09-20 16:31 ` Casey Schaufler
2007-09-20 17:17 ` David Howells
2007-09-20 17:33 ` David Howells
2007-09-24 14:00 ` Serge E. Hallyn
2007-09-24 14:21 ` Stephen Smalley
2007-09-24 15:35 ` Serge E. Hallyn
2007-09-24 15:52 ` David Howells
2007-09-26 13:30 ` David Howells
2007-09-26 14:14 ` Stephen Smalley
2007-09-26 14:58 ` Casey Schaufler
2007-09-19 16:18 ` [PATCH 3/3] CRED: Move the effective capabilities into the cred struct David Howells
2007-09-20 4:11 ` Andrew Morgan [this message]
2007-09-20 8:15 ` David Howells
2007-09-20 13:38 ` Trond Myklebust
2007-09-20 15:36 ` Casey Schaufler
2007-09-20 16:09 ` Trond Myklebust
2007-09-26 18:23 ` Al Viro
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