linux-kernel - [PATCH 2/12] Use find_task_by

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Date:	Tue, 29 Jan 2008 16:43:25 +0300
From:	Pavel Emelyanov <xemul@...nvz.org>
To:	Andrew Morton <akpm@...ux-foundation.org>
CC:	Linux Kernel Mailing List <linux-kernel@...r.kernel.org>,
	devel@...nvz.org, Oleg Nesterov <oleg@...sign.ru>
Subject: [PATCH 2/12] Use find_task_by_vpid in autid code

The pid to lookup a task by is passed inside audit code
via netlink message.

Thanks to Denis Lunev, netlink packets are now (since 2.6.24) 
_always_ processed in the context of the sending task. So this
is correct to lookup the task with find_task_by_vpid() here.

Signed-off-by: Pavel Emelyanov <xemul@...nvz.org>

---
 kernel/audit.c |    6 +++---
 1 files changed, 3 insertions(+), 3 deletions(-)

diff --git a/kernel/audit.c b/kernel/audit.c
index ae58d87..ebb9d60 100644
--- a/kernel/audit.c
+++ b/kernel/audit.c
@@ -378,7 +378,7 @@ static int audit_prepare_user_tty(pid_t pid, uid_t loginuid)
 	int err;
 
 	read_lock(&tasklist_lock);
-	tsk = find_task_by_pid(pid);
+	tsk = find_task_by_vpid(pid);
 	err = -ESRCH;
 	if (!tsk)
 		goto out;
@@ -764,7 +764,7 @@ static int audit_receive_msg(struct sk_buff *skb, struct nlmsghdr *nlh)
 		struct task_struct *tsk;
 
 		read_lock(&tasklist_lock);
-		tsk = find_task_by_pid(pid);
+		tsk = find_task_by_vpid(pid);
 		if (!tsk)
 			err = -ESRCH;
 		else {
@@ -787,7 +787,7 @@ static int audit_receive_msg(struct sk_buff *skb, struct nlmsghdr *nlh)
 		if (s->enabled != 0 && s->enabled != 1)
 			return -EINVAL;
 		read_lock(&tasklist_lock);
-		tsk = find_task_by_pid(pid);
+		tsk = find_task_by_vpid(pid);
 		if (!tsk)
 			err = -ESRCH;
 		else {
-- 
1.5.3.4

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