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authorPavel Emelyanov <xemul@openvz.org>2007-10-18 23:40:18 -0700
committerLinus Torvalds <torvalds@woody.linux-foundation.org>2007-10-19 11:53:40 -0700
commitbac0abd6174e427404dd197cdbefece31e97329b (patch)
tree68ed6bd8619552c921c9fb99e83cb04fcb235a39 /fs/exec.c
parent19b9b9b54e5f115907efd56be2c3799775a46561 (diff)
Isolate some explicit usage of task->tgid
With pid namespaces this field is now dangerous to use explicitly, so hide it behind the helpers. Also the pid and pgrp fields o task_struct and signal_struct are to be deprecated. Unfortunately this patch cannot be sent right now as this leads to tons of warnings, so start isolating them, and deprecate later. Actually the p->tgid == pid has to be changed to has_group_leader_pid(), but Oleg pointed out that in case of posix cpu timers this is the same, and thread_group_leader() is more preferable. Signed-off-by: Pavel Emelyanov <xemul@openvz.org> Acked-by: Oleg Nesterov <oleg@tv-sign.ru> Cc: Sukadev Bhattiprolu <sukadev@us.ibm.com> Cc: "Eric W. Biederman" <ebiederm@xmission.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Diffstat (limited to 'fs/exec.c')
-rw-r--r--fs/exec.c4
1 files changed, 2 insertions, 2 deletions
diff --git a/fs/exec.c b/fs/exec.c
index 007d0d814bf..2c942e2d14e 100644
--- a/fs/exec.c
+++ b/fs/exec.c
@@ -841,8 +841,8 @@ static int de_thread(struct task_struct *tsk)
*/
tsk->start_time = leader->start_time;
- BUG_ON(leader->tgid != tsk->tgid);
- BUG_ON(tsk->pid == tsk->tgid);
+ BUG_ON(!same_thread_group(leader, tsk));
+ BUG_ON(has_group_leader_pid(tsk));
/*
* An exec() starts a new thread group with the
* TGID of the previous thread group. Rehash the