diff options
author | Eric W. Biederman <ebiederm@xmission.com> | 2009-01-08 02:08:46 (GMT) |
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committer | Linus Torvalds <torvalds@linux-foundation.org> | 2009-01-08 16:31:12 (GMT) |
commit | f9fb860f67b9542cd78d1558dec7058092b57d8e (patch) | |
tree | 1c14a2d7013df108b6103b7d24b1201fd78b922b /kernel | |
parent | 6af866af34a96fed24a55979a78b6f73bd4e8e87 (diff) | |
download | linux-fsl-qoriq-f9fb860f67b9542cd78d1558dec7058092b57d8e.tar.xz |
pid: implement ns_of_pid
A current problem with the pid namespace is that it is easy to do pid
related work after exit_task_namespaces which drops the nsproxy pointer.
However if we are doing pid namespace related work we are always operating
on some struct pid which retains the pid_namespace pointer of the pid
namespace it was allocated in.
So provide ns_of_pid which allows us to find the pid namespace a pid was
allocated in.
Using this we have the needed infrastructure to do pid namespace related
work at anytime we have a struct pid, removing the chance of accidentally
having a NULL pointer dereference when accessing current->nsproxy.
Signed-off-by: Eric W. Biederman <ebiederm@xmission.com>
Signed-off-by: Sukadev Bhattiprolu <sukadev@linux.vnet.ibm.com>
Cc: Oleg Nesterov <oleg@redhat.com>
Cc: Roland McGrath <roland@redhat.com>
Cc: Bastian Blank <bastian@waldi.eu.org>
Cc: Pavel Emelyanov <xemul@openvz.org>
Cc: Nadia Derbey <Nadia.Derbey@bull.net>
Acked-by: Serge Hallyn <serue@us.ibm.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Diffstat (limited to 'kernel')
0 files changed, 0 insertions, 0 deletions