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From: ebiederm-aS9lmoZGLiVWk0Htik3J/w@public.gmane.org (Eric W. Biederman)
To: Gowrishankar M
	<gowrishankar.m-23VcF4HTsmIX0ybBhKVfKdBPR1lH4CV8@public.gmane.org>
Cc: Containers
	<containers-cunTk1MwBs9QetFLy7KEm3xJsTq8ys+cHZ5vskTnxNA@public.gmane.org>,
	Dave <dave-23VcF4HTsmIX0ybBhKVfKdBPR1lH4CV8@public.gmane.org>,
	Sukadev
	<sukadev-23VcF4HTsmIX0ybBhKVfKdBPR1lH4CV8@public.gmane.org>,
	Balbir <balbir-23VcF4HTsmIX0ybBhKVfKdBPR1lH4CV8@public.gmane.org>
Subject: Re: [PATCH 1/5] pid: add new iterative macros to list processes in a namespace
Date: Thu, 18 Dec 2008 09:45:24 -0800	[thread overview]
Message-ID: <m17i5x8jij.fsf@frodo.ebiederm.org> (raw)
In-Reply-To: <1229618553-6348-2-git-send-email-gowrishankar.m-23VcF4HTsmIX0ybBhKVfKdBPR1lH4CV8@public.gmane.org> (Gowrishankar M.'s message of "Thu, 18 Dec 2008 22:12:29 +0530")

Gowrishankar M <gowrishankar.m-23VcF4HTsmIX0ybBhKVfKdBPR1lH4CV8@public.gmane.org> writes:

> From: Gowrishankar M <gomuthuk-23VcF4HTsmIX0ybBhKVfKdBPR1lH4CV8@public.gmane.org>
>
> Below patch addresses a common solution for any place where a process
> should be checked if it is associated to caller namespace. At present,
> we use 'task_pid_vnr(t) > 0' to further proceed with task 't' in current
> namespace.
>
> To avoid applying this check in every userspace code related to PID namespace,
> this patch provides two new iterative macros;for_each_process_in_ns and
> do_each_thread_in_ns.

There may be a point to this, as a cleanup.

I am not convinced at the moment that has_group_leader_pid() does
the right thing in this context.

Can you please send the fix for cap_set_all (adding task_pid_vnr(X) > 1) 
and then we can revisit possible cleanups.

Thanks,

Eric

  parent reply	other threads:[~2008-12-18 17:45 UTC|newest]

Thread overview: 23+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2008-12-18 16:42 pid: improved namespaced iteration over processes list (v2) Gowrishankar M
     [not found] ` <1229618553-6348-1-git-send-email-gowrishankar.m-23VcF4HTsmIX0ybBhKVfKdBPR1lH4CV8@public.gmane.org>
2008-12-18 16:42   ` [PATCH 1/5] pid: add new iterative macros to list processes in a namespace Gowrishankar M
     [not found]     ` <1229618553-6348-2-git-send-email-gowrishankar.m-23VcF4HTsmIX0ybBhKVfKdBPR1lH4CV8@public.gmane.org>
2008-12-18 17:45       ` Eric W. Biederman [this message]
2008-12-18 16:42   ` [PATCH 2/5] pid: use namespaced iteration on processes while using sysrq Gowrishankar M
     [not found]     ` <1229618553-6348-3-git-send-email-gowrishankar.m-23VcF4HTsmIX0ybBhKVfKdBPR1lH4CV8@public.gmane.org>
2008-12-18 16:58       ` Dave Hansen
2008-12-18 17:12       ` Serge E. Hallyn
2008-12-18 17:31       ` Eric W. Biederman
2008-12-18 16:42   ` [PATCH 3/5] pid: use namespaced iteration on processes while setting capability Gowrishankar M
     [not found]     ` <1229618553-6348-4-git-send-email-gowrishankar.m-23VcF4HTsmIX0ybBhKVfKdBPR1lH4CV8@public.gmane.org>
2008-12-18 17:04       ` Serge E. Hallyn
2008-12-18 17:35       ` Eric W. Biederman
2008-12-18 16:42   ` [PATCH 4/5] pid: use namespaced iteration on processes while sending signal to all Gowrishankar M
     [not found]     ` <1229618553-6348-5-git-send-email-gowrishankar.m-23VcF4HTsmIX0ybBhKVfKdBPR1lH4CV8@public.gmane.org>
2008-12-18 17:04       ` Serge E. Hallyn
2008-12-18 17:10       ` Dave Hansen
2008-12-18 17:32         ` Serge E. Hallyn
2008-12-18 16:42   ` [PATCH 5/5] pid: use namespaced iteration on processes while managing priority Gowrishankar M
     [not found]     ` <1229618553-6348-6-git-send-email-gowrishankar.m-23VcF4HTsmIX0ybBhKVfKdBPR1lH4CV8@public.gmane.org>
2008-12-18 17:05       ` Serge E. Hallyn
     [not found]         ` <20081218170509.GC13188-r/Jw6+rmf7HQT0dZR+AlfA@public.gmane.org>
2008-12-18 17:46           ` Eric W. Biederman
2008-12-18 17:38       ` Eric W. Biederman
     [not found]         ` <m1d4fp8ju3.fsf-B27657KtZYmhTnVgQlOflh2eb7JE58TQ@public.gmane.org>
2008-12-18 18:13           ` Serge E. Hallyn
     [not found]             ` <20081218181317.GA14409-r/Jw6+rmf7HQT0dZR+AlfA@public.gmane.org>
2008-12-18 18:54               ` Eric W. Biederman
     [not found]                 ` <m1wsdx71r7.fsf-B27657KtZYmhTnVgQlOflh2eb7JE58TQ@public.gmane.org>
2008-12-18 19:23                   ` Serge E. Hallyn
2008-12-19  4:30                   ` Matt Helsley
2008-12-19  4:37                     ` Matt Helsley

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