From: Rusty Russell <rusty@rustcorp.com.au>
To: Matt Mackall <mpm@selenic.com>
Cc: Jeremy Fitzhardinge <jeremy@goop.org>,
David Rientjes <rientjes@google.com>,
Andrew Morton <akpm@linux-foundation.org>,
lkml - Kernel Mailing List <linux-kernel@vger.kernel.org>
Subject: Re: maps2-add-proc-pid-pagemap-interface.patch
Date: Tue, 10 Jul 2007 17:00:35 +1000 [thread overview]
Message-ID: <1184050835.6005.532.camel@localhost.localdomain> (raw)
In-Reply-To: <20070710062736.GF11115@waste.org>
On Tue, 2007-07-10 at 01:27 -0500, Matt Mackall wrote:
> On Tue, Jul 10, 2007 at 02:28:50PM +1000, Rusty Russell wrote:
> > I don't think normal ptraces get cut on exec, so I'm not sure why this
> > should be different.
>
> They absolutely do, if UID changes. Consider ptracing a shell
> launching a setuid binary.
No, ptraced processes don't change uid on execing a setuid binary.
Which works, but isn't what you want 8(
> For something more closely analogous, consider opening /proc/pid/mem
> on the same shell...
Ah, now I see where you got this from. OK, but can I have a comment
please?
Thanks!
Rusty.
prev parent reply other threads:[~2007-07-10 7:01 UTC|newest]
Thread overview: 5+ messages / expand[flat|nested] mbox.gz Atom feed top
2007-07-08 11:33 maps2-add-proc-pid-pagemap-interface.patch Rusty Russell
2007-07-09 22:31 ` maps2-add-proc-pid-pagemap-interface.patch Matt Mackall
2007-07-10 4:28 ` maps2-add-proc-pid-pagemap-interface.patch Rusty Russell
2007-07-10 6:27 ` maps2-add-proc-pid-pagemap-interface.patch Matt Mackall
2007-07-10 7:00 ` Rusty Russell [this message]
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