linux-kernel - [PATCH 5/12] signal: Rewrite kill_something

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Date:	Wed, 13 Dec 2006 04:07:49 -0700
From:	"Eric W. Biederman" <ebiederm@...ssion.com>
To:	"<Andrew Morton" <akpm@...l.org>
Cc:	<containers@...ts.osdl.org>, Oleg Nesterov <oleg@...sign.ru>,
	Alan Cox <alan@...rguk.ukuu.org.uk>,
	<linux-kernel@...r.kernel.org>,
	"Eric W. Biederman" <ebiederm@...ssion.com>
Subject: [PATCH 5/12] signal: Rewrite kill_something_info so it uses newer helpers.

The goal is to remove users of the old signal helper functions
so they can be removed.

Signed-off-by: Eric W. Biederman <ebiederm@...ssion.com>
---
 kernel/signal.c |   12 ++++++++----
 1 files changed, 8 insertions(+), 4 deletions(-)

diff --git a/kernel/signal.c b/kernel/signal.c
index 1921ffd..1e34d32 100644
--- a/kernel/signal.c
+++ b/kernel/signal.c
@@ -1192,8 +1192,10 @@ EXPORT_SYMBOL_GPL(kill_pid_info_as_uid);
 
 static int kill_something_info(int sig, struct siginfo *info, int pid)
 {
+	int ret;
+	rcu_read_lock();
 	if (!pid) {
-		return kill_pg_info(sig, info, process_group(current));
+		ret = kill_pgrp_info(sig, info, task_pgrp(current));
 	} else if (pid == -1) {
 		int retval = 0, count = 0;
 		struct task_struct * p;
@@ -1208,12 +1210,14 @@ static int kill_something_info(int sig, struct siginfo *info, int pid)
 			}
 		}
 		read_unlock(&tasklist_lock);
-		return count ? retval : -ESRCH;
+		ret = count ? retval : -ESRCH;
 	} else if (pid < 0) {
-		return kill_pg_info(sig, info, -pid);
+		ret = kill_pgrp_info(sig, info, find_pid(-pid));
 	} else {
-		return kill_proc_info(sig, info, pid);
+		ret = kill_pid_info(sig, info, find_pid(pid));
 	}
+	rcu_read_unlock();
+	return ret;
 }
 
 /*
-- 
1.4.4.1.g278f

-
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