From: Chris Wright <chrisw@sous-sol.org>
To: Ingo Molnar <mingo@elte.hu>
Cc: Chris Wright <chrisw@sous-sol.org>,
Oleg Nesterov <oleg@redhat.com>,
Roland McGrath <roland@redhat.com>,
Andrew Morton <akpm@linux-foundation.org>,
linux-kernel@vger.kernel.org, Al Viro <viro@ZenIV.linux.org.uk>
Subject: Re: [RFC PATCH 3/3a] ptrace: add _ptrace_may_access()
Date: Thu, 7 May 2009 02:20:09 -0700 [thread overview]
Message-ID: <20090507092009.GC3036@sequoia.sous-sol.org> (raw)
In-Reply-To: <20090507090459.GE19133@elte.hu>
* Ingo Molnar (mingo@elte.hu) wrote:
>
> * Chris Wright <chrisw@sous-sol.org> wrote:
>
> > * Ingo Molnar (mingo@elte.hu) wrote:
> > > * Oleg Nesterov <oleg@redhat.com> wrote:
> > > > Agreed, but what about security_operations->ptrace_may_access ?
> > > > It has the same (bad) name, but returns the error code or 0 on
> > > > success.
> > >
> > > Bad code should generally be fixed, or in exceptional circumstances
> > > it can tolerated if it's pre-existing bad code, but it should never
> > > be propagated. It has not spread _that_ widely yet, and is isolated
> > > to the security subsystem:
> >
> > And the security hooks tend to all follow the 0 success -ve ERR on error.
>
> I just sent a patch (see below) that renames them to
> ptrace_access_check().
>
> They have no active connection to the core kernel
> ptrace_may_access() check in any case:
Not sure what you mean:
ptrace_may_access
__ptrace_may_access
security_ptrace_may_access
Looks like your patch won't compile.
next prev parent reply other threads:[~2009-05-07 9:21 UTC|newest]
Thread overview: 51+ messages / expand[flat|nested] mbox.gz Atom feed top
2009-05-05 22:47 [PATCH 3/3] ptrace: do not use task_lock() for attach Oleg Nesterov
2009-05-06 2:08 ` Roland McGrath
2009-05-06 8:00 ` [RFC PATCH 3/3a] ptrace: add _ptrace_may_access() Ingo Molnar
2009-05-06 20:32 ` Roland McGrath
2009-05-06 20:47 ` Christoph Hellwig
2009-05-06 21:09 ` Roland McGrath
2009-05-07 8:19 ` Ingo Molnar
2009-05-07 8:17 ` Ingo Molnar
2009-05-06 23:53 ` Oleg Nesterov
2009-05-07 0:21 ` Roland McGrath
2009-05-07 6:36 ` Oleg Nesterov
2009-05-07 8:20 ` Ingo Molnar
2009-05-07 8:31 ` Oleg Nesterov
2009-05-07 8:38 ` Ingo Molnar
2009-05-07 8:49 ` [patch] security: rename ptrace_may_access => ptrace_access_check Ingo Molnar
2009-05-07 9:19 ` Oleg Nesterov
2009-05-07 9:27 ` Ingo Molnar
2009-05-07 8:57 ` [RFC PATCH 3/3a] ptrace: add _ptrace_may_access() Chris Wright
2009-05-07 9:04 ` Ingo Molnar
2009-05-07 9:20 ` Chris Wright [this message]
2009-05-07 9:54 ` James Morris
2009-05-07 10:20 ` your mail Ingo Molnar
2009-05-07 11:37 ` security: rename ptrace_may_access => ptrace_access_check James Morris
2009-05-07 14:17 ` Ingo Molnar
2009-06-23 14:14 ` Oleg Nesterov
2009-06-23 17:49 ` Christoph Hellwig
2009-06-23 19:24 ` [PATCH 0/1] mm_for_maps: simplify, use ptrace_may_access() Oleg Nesterov
2009-06-23 19:25 ` [PATCH 1/1] " Oleg Nesterov
2009-06-24 3:06 ` Serge E. Hallyn
2009-06-24 14:21 ` James Morris
2009-06-24 9:25 ` Roland McGrath
2009-06-24 14:37 ` Oleg Nesterov
2009-06-24 1:08 ` security: rename ptrace_may_access => ptrace_access_check James Morris
2009-05-08 3:27 ` your mail Casey Schaufler
2009-06-24 14:19 ` security: rename ptrace_may_access => ptrace_access_check James Morris
2009-05-07 9:31 ` [RFC PATCH 3/3a] ptrace: add _ptrace_may_access() Ingo Molnar
2009-05-07 9:49 ` [patch 1/2] ptrace, security: rename ptrace_may_access => ptrace_access_check Ingo Molnar
2009-05-07 18:47 ` Roland McGrath
2009-05-07 19:55 ` Andrew Morton
2009-05-11 13:39 ` Ingo Molnar
2009-05-11 18:51 ` Andrew Morton
2009-05-15 1:10 ` Américo Wang
2009-05-15 19:34 ` Ingo Molnar
2009-05-07 9:50 ` [patch 2/2] ptrace: turn ptrace_access_check() into a retval function Ingo Molnar
2009-05-07 18:47 ` Roland McGrath
2009-05-06 22:46 ` [PATCH 3/3] ptrace: do not use task_lock() for attach Chris Wright
2009-05-06 23:13 ` Oleg Nesterov
2009-05-06 23:27 ` Chris Wright
2009-05-06 23:48 ` James Morris
2009-05-07 1:17 ` Roland McGrath
2009-05-08 12:18 ` David Howells
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