linux-kernel - Re: [PATCH 4/7] seccomp_filter: add process state reporting

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Message-ID: <BANLkTinfXZ3j0vG51=cQjM0FZQ5VR5ze8A@mail.gmail.com>
Date:	Wed, 27 Apr 2011 22:24:20 -0500
From:	Will Drewry <wad@...omium.org>
To:	KOSAKI Motohiro <kosaki.motohiro@...fujitsu.com>
Cc:	linux-kernel@...r.kernel.org, kees.cook@...onical.com,
	eparis@...hat.com, agl@...omium.org, mingo@...e.hu,
	jmorris@...ei.org, rostedt@...dmis.org,
	Andrew Morton <akpm@...ux-foundation.org>,
	Alexey Dobriyan <adobriyan@...il.com>,
	David Howells <dhowells@...hat.com>,
	Al Viro <viro@...iv.linux.org.uk>,
	David Rientjes <rientjes@...gle.com>,
	Stephen Wilson <wilsons@...rt.ca>
Subject: Re: [PATCH 4/7] seccomp_filter: add process state reporting

On Wed, Apr 27, 2011 at 10:21 PM, KOSAKI Motohiro
<kosaki.motohiro@...fujitsu.com> wrote:
>> Adds seccomp and seccomp_filter status reporting to proc.
>> /proc/<pid>/status will include a Seccomp field, and
>> /proc/<pid>/seccomp_filter will provide read-only access
>> to the current filter and bitmask set for seccomp_filters.
>>
>> Signed-off-by: Will Drewry <wad@...omium.org>
>> ---
>>  fs/proc/array.c |   21 +++++++++++++++++++++
>>  fs/proc/base.c  |   25 +++++++++++++++++++++++++
>>  2 files changed, 46 insertions(+), 0 deletions(-)
>
> I'm not againt seccomp_filter. but I dislike to increase /proc/<pid>/status mess.
> 1) it's read from a lot of applications, I don't want to worry about performance
> thing. 2) 99.99% user never use seccomp. this field is useless for them.
>
> Can't you make individual seccomp specific file?

Definitely.  Would it make sense to have /proc/<pid>/seccomp and
/proc/<pid>/seccomp_filter?
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