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pstree: don't replace sid if the root task is a session leader

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The root task must remain a session leader after c/r. The root task
can be executed in another pidns and the sid from another name space
will be invalid.

Cc: Cyrill Gorcunov <gorcunov@openvz.org>
Reported-by: Pavel Emelyanov <xemul@parallels.com>
Signed-off-by: Andrey Vagin <avagin@openvz.org>
Acked-by: Cyrill Gorcunov <gorcunov@openvz.org>
Signed-off-by: Pavel Emelyanov <xemul@parallels.com>
This commit is contained in:
Andrey Vagin
2013-04-01 20:10:44 +04:00
committed by Pavel Emelyanov
parent ddc6789dca
commit 8eabba3d1c
1 changed files with 3 additions and 0 deletions
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3
pstree.c
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@@ -154,6 +154,9 @@ static int prepare_pstree_for_shell_job(void)
if (!opts.shell_job)
return 0;
if (root_item->sid == root_item->pid.virt)
return 0;
/*
* Migration of a root task group leader is a bit tricky.
* When a task yields SIGSTOP, the kernel notifies the parent