From: Will Drewry <wad@chromium.org>
To: Linus Torvalds <torvalds@linux-foundation.org>, luto@mit.edu
Cc: linux-kernel@vger.kernel.org, keescook@chromium.org,
john.johansen@canonical.com, serge.hallyn@canonical.com,
coreyb@linux.vnet.ibm.com, pmoore@redhat.com, eparis@redhat.com,
djm@mindrot.org, segoon@openwall.com, rostedt@goodmis.org,
jmorris@namei.org, scarybeasts@gmail.com, avi@redhat.com,
penberg@cs.helsinki.fi, viro@zeniv.linux.org.uk, mingo@elte.hu,
akpm@linux-foundation.org, khilman@ti.com,
borislav.petkov@amd.com, amwang@redhat.com, oleg@redhat.com,
ak@linux.intel.com, eric.dumazet@gmail.com, gregkh@suse.de,
dhowells@redhat.com, daniel.lezcano@free.fr,
linux-fsdevel@vger.kernel.org,
linux-security-module@vger.kernel.org, olofj@chromium.org,
mhalcrow@google.com, dlaor@redhat.com, corbet@lwn.net,
alan@lxorguk.ukuu.org.uk
Subject: Re: [PATCH PLACEHOLDER 1/3] fs/exec: "always_unprivileged" patch
Date: Thu, 12 Jan 2012 18:03:47 -0600 [thread overview]
Message-ID: <CABqD9hZFBY-S4ke1swtcYuuLKsgz73hx755niPirTivWBt9kuw@mail.gmail.com> (raw)
In-Reply-To: <CA+55aFz4mJU2E2BPzZyVQ52V_ytg_8fyAH+BV_uYHVXBM2wqDw@mail.gmail.com>
On Thu, Jan 12, 2012 at 5:47 PM, Linus Torvalds
<torvalds@linux-foundation.org> wrote:
> On Thu, Jan 12, 2012 at 3:38 PM, Will Drewry <wad@chromium.org> wrote:
>> This patch is a placeholder until Andy's (luto@mit.edu) patch arrives
>> implementing Linus's proposal for applying a "this is a process that has
>> *no* extra privileges at all, and can never get them".
>
> I think we can simplify and improve the naming/logic by just saying
> "can't change privileges".
>
> I'd argue that that even includes "can't drop them", just to make it
> really clear what the rules are.
>
> So the usage model would be to first simply set the privileges to
> whatever you want the sandbox to be, and then enter the restricted
> mode.
That sounds ideal to me. This placeholder is certainly insufficient
then. I'll keep tweaking this patch then until its successor emerges.
Thanks!
will
next prev parent reply other threads:[~2012-01-13 0:03 UTC|newest]
Thread overview: 47+ messages / expand[flat|nested] mbox.gz Atom feed top
2012-01-12 23:38 [PATCH PLACEHOLDER 1/3] fs/exec: "always_unprivileged" patch Will Drewry
2012-01-12 23:38 ` [PATCH v3 2/3] seccomp_filters: system call filtering using BPF Will Drewry
2012-01-13 0:51 ` Randy Dunlap
2012-01-12 23:59 ` Will Drewry
2012-01-12 23:59 ` Will Drewry
2012-01-13 1:35 ` Randy Dunlap
2012-01-13 17:39 ` Eric Paris
2012-01-13 18:50 ` Will Drewry
2012-01-13 18:50 ` Will Drewry
2012-01-12 23:38 ` [PATCH v3 3/3] Documentation: prctl/seccomp_filter Will Drewry
2012-01-15 1:52 ` Randy Dunlap
2012-01-16 1:41 ` Will Drewry
2012-01-17 23:29 ` Eric Paris
2012-01-17 23:29 ` Eric Paris
2012-01-17 23:54 ` Will Drewry
2012-01-12 23:47 ` [PATCH PLACEHOLDER 1/3] fs/exec: "always_unprivileged" patch Linus Torvalds
2012-01-13 0:03 ` Will Drewry [this message]
2012-01-13 0:42 ` Andrew Lutomirski
2012-01-13 0:57 ` Linus Torvalds
2012-01-13 0:57 ` Linus Torvalds
2012-01-13 1:11 ` Andrew Lutomirski
2012-01-13 1:11 ` Andrew Lutomirski
2012-01-13 1:17 ` Linus Torvalds
2012-01-14 13:30 ` Jamie Lokier
2012-01-14 19:21 ` Will Drewry
2012-01-14 19:21 ` Will Drewry
2012-01-14 20:22 ` Linus Torvalds
2012-01-14 21:04 ` Andrew Lutomirski
2012-01-15 20:16 ` Casey Schaufler
2012-01-15 20:59 ` Andrew Lutomirski
2012-01-15 21:32 ` Casey Schaufler
2012-01-15 21:32 ` Casey Schaufler
2012-01-15 22:07 ` Andrew Lutomirski
2012-01-16 2:04 ` Will Drewry
2012-01-16 2:04 ` Will Drewry
2012-01-18 3:12 ` Eric W. Biederman
2012-01-18 3:12 ` Eric W. Biederman
2012-01-16 2:41 ` Casey Schaufler
2012-01-16 2:41 ` Casey Schaufler
2012-01-16 7:45 ` Andrew Lutomirski
2012-01-16 18:02 ` Casey Schaufler
2012-01-16 18:02 ` Casey Schaufler
2012-01-13 1:37 ` Will Drewry
2012-01-13 1:41 ` Andrew Lutomirski
2012-01-13 1:41 ` Andrew Lutomirski
2012-01-13 2:09 ` Kees Cook
2012-01-13 2:09 ` Kees Cook
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