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CRED: Separate per-task-group keyrings from signal_struct

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Separate per-task-group keyrings from signal_struct and dangle their anchor
from the cred struct rather than the signal_struct.

Signed-off-by: David Howells <dhowells@redhat.com>
Reviewed-by: James Morris <jmorris@namei.org>
Signed-off-by: James Morris <jmorris@namei.org>
This commit is contained in:
David Howells 2008-11-14 10:39:20 +11:00 • committed by James Morris
parent 275bb41e9d
commit bb952bb98a
7 changed files with 135 additions and 99 deletions
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7
kernel/fork.c
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@ -802,12 +802,6 @@ static int copy_signal(unsigned long clone_flags, struct task_struct *tsk)
if (!sig)
return -ENOMEM;
ret = copy_thread_group_keys(tsk);
if (ret < 0) {
kmem_cache_free(signal_cachep, sig);
return ret;
}
atomic_set(&sig->count, 1);
atomic_set(&sig->live, 1);
init_waitqueue_head(&sig->wait_chldexit);
@ -852,7 +846,6 @@ static int copy_signal(unsigned long clone_flags, struct task_struct *tsk)
void __cleanup_signal(struct signal_struct *sig)
{
thread_group_cputime_free(sig);
exit_thread_group_keys(sig);
tty_kref_put(sig->tty);
kmem_cache_free(signal_cachep, sig);
}