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Date: Thu, 28 Apr 2011 16:29:00 +0200
From: Frederic Weisbecker <fweisbec@gmail.com>
To: Will Drewry <wad@chromium.org>
Cc: linux-kernel@vger.kernel.org, kees.cook@canonical.com, eparis@redhat.com,
        agl@chromium.org, mingo@elte.hu, jmorris@namei.org,
        rostedt@goodmis.org, Ingo Molnar <mingo@redhat.com>,
        Andrew Morton <akpm@linux-foundation.org>, Tejun Heo <tj@kernel.org>,
        Michal Marek <mmarek@suse.cz>, Oleg Nesterov <oleg@redhat.com>,
        Roland McGrath <roland@redhat.com>,
        Peter Zijlstra <a.p.zijlstra@chello.nl>, Jiri Slaby <jslaby@suse.cz>,
        David Howells <dhowells@redhat.com>,
        "Serge E. Hallyn" <serge@hallyn.com>
Subject: Re: [PATCH 3/7] seccomp_filter: Enable ftrace-based system call
 filtering
Message-ID: <20110428142857.GC1798@nowhere>
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On Wed, Apr 27, 2011 at 10:08:47PM -0500, Will Drewry wrote:
> This change adds a new seccomp mode based on the work by
> agl@chromium.org. This mode comes with a bitmask of NR_syscalls size and
> an optional linked list of seccomp_filter objects. When in mode 2, all

Since you now use the filters. Why not using them to filter syscalls
entirely rather than using a bitmap of allowed syscalls?

You have the "nr" field in syscall tracepoints.
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