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audit: don't check if kauditd is valid every time 

We only need to check if kauditd is valid after we start it, if kauditd
is invalid, we will set kauditd_task to NULL.  So next time, we will
start kauditd again.

It means if kauditd_task is not NULL,it must be valid.

Signed-off-by: Gao feng <gaofeng@cn.fujitsu.com>
Cc: Eric Paris <eparis@redhat.com>
Cc: Al Viro <viro@zeniv.linux.org.uk>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
This commit is contained in:
Gao feng 2013-04-29 15:05:14 -07:00 committed by Linus Torvalds
parent 3f68613f39
commit 13f51e1c3f
1 changed files with 6 additions and 6 deletions
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12
kernel/audit.c
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@ -660,14 +660,14 @@ static int audit_receive_msg(struct sk_buff *skb, struct nlmsghdr *nlh)
/* As soon as there's any sign of userspace auditd,
* start kauditd to talk to it */
if (!kauditd_task)
if (!kauditd_task) {
kauditd_task = kthread_run(kauditd_thread, NULL, "kauditd");
if (IS_ERR(kauditd_task)) {
err = PTR_ERR(kauditd_task);
kauditd_task = NULL;
return err;
if (IS_ERR(kauditd_task)) {
err = PTR_ERR(kauditd_task);
kauditd_task = NULL;
return err;
}
}
loginuid = audit_get_loginuid(current);
sessionid = audit_get_sessionid(current);
security_task_getsecid(current, &sid);