From a16571b40461485f2ca2cb75daed031c815810c2 Mon Sep 17 00:00:00 2001
From: Ingo Weinhold <ingo_weinhold@gmx.de>
Date: Mon, 8 Oct 2007 15:32:02 +0000
Subject: [PATCH] Patch by Vasilis Kaoutsis: Return error code via errno.

git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@22484 a95241bf-73f2-0310-859d-f6bbb57e9c96
---
 src/system/libroot/posix/unistd/alarm.c | 7 ++++++-
 1 file changed, 6 insertions(+), 1 deletion(-)

diff --git a/src/system/libroot/posix/unistd/alarm.c b/src/system/libroot/posix/unistd/alarm.c
index e47f6e9261..fbfeddcc11 100644
--- a/src/system/libroot/posix/unistd/alarm.c
+++ b/src/system/libroot/posix/unistd/alarm.c
@@ -15,12 +15,17 @@ uint
 alarm(unsigned int sec)
 {
 	struct itimerval value, oldValue;
+	int result;
 
 	value.it_interval.tv_sec = value.it_interval.tv_usec = 0;
 	value.it_value.tv_sec = sec;
 	value.it_value.tv_usec = 0;
-	if (setitimer(ITIMER_REAL, &value, &oldValue) < 0)
+
+	result = setitimer(ITIMER_REAL, &value, &oldValue);
+	if (result < 0) {
+		errno = result;
 		return -1;
+	}
 
 	if (oldValue.it_value.tv_usec)
 		oldValue.it_value.tv_sec++;