linux-kernel - [PATCH 3/5] Use wait_copyout() in do

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Message-Id: <1242036759-4025-4-git-send-email-v.mayatskih@gmail.com>
Date:	Mon, 11 May 2009 12:12:42 +0200
From:	Vitaly Mayatskikh <v.mayatskih@...il.com>
To:	Andrew Morton <akpm@...ux-foundation.org>
Cc:	Oleg Nesterov <oleg@...hat.com>, Ingo Molnar <mingo@...e.hu>,
	Roland McGrath <roland@...hat.com>,
	linux-kernel@...r.kernel.org
Subject: [PATCH 3/5] Use wait_copyout() in do_wait()

All copy-paste getrusage() and put_user() code in wait_task_* functions
is replaced by call to wait_copyout()

Use wait_copyout() in do_wait() to clean up user's siginfo structure.

Signed-off-by: Vitaly Mayatskikh <v.mayatskih@...il.com>
---
 kernel/exit.c |   15 +--------------
 1 files changed, 1 insertions(+), 14 deletions(-)

diff --git a/kernel/exit.c b/kernel/exit.c
index 3b2fdd9..6ee6b53 100644
--- a/kernel/exit.c
+++ b/kernel/exit.c
@@ -1600,8 +1600,6 @@ end:
 	__set_current_state(TASK_RUNNING);
 	remove_wait_queue(&current->signal->wait_chldexit,&wait);
 	if (wo->wo_info) {
-		struct siginfo __user *infop = wo->wo_info;
-
 		if (retval > 0)
 			retval = 0;
 		else {
@@ -1610,18 +1608,7 @@ end:
 			 * we would set so the user can easily tell the
 			 * difference.
 			 */
-			if (!retval)
-				retval = put_user(0, &infop->si_signo);
-			if (!retval)
-				retval = put_user(0, &infop->si_errno);
-			if (!retval)
-				retval = put_user(0, &infop->si_code);
-			if (!retval)
-				retval = put_user(0, &infop->si_pid);
-			if (!retval)
-				retval = put_user(0, &infop->si_uid);
-			if (!retval)
-				retval = put_user(0, &infop->si_status);
+			retval = wait_copyout(wo, 0, 0, 0, 0, 0, 0);
 		}
 	}
 	return retval;
-- 
1.6.2.2


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