From 048811c97a97cdc574dc9307fb1bdd54e41d2a60 Mon Sep 17 00:00:00 2001
From: Karel Zak
Date: Wed, 1 Jul 2015 15:35:17 +0200
Subject: swapon: fix restart waitpid with errno == EINTR

Reported-by: Maks Naumov (https://github.com/karelzak/util-linux/pull/205)
Signed-off-by: Karel Zak <kzak@redhat.com>
---
 sys-utils/swapon.c | 15 +++++++--------
 1 file changed, 7 insertions(+), 8 deletions(-)

(limited to 'sys-utils/swapon.c')

diff --git a/sys-utils/swapon.c b/sys-utils/swapon.c
index 561b1a967..32a3107fd 100644
--- a/sys-utils/swapon.c
+++ b/sys-utils/swapon.c
@@ -317,14 +317,13 @@ static int swap_reinitialize(const char *device,
 
 	default: /* parent */
 		do {
-			if ((ret = waitpid(pid, &status, 0)) < 0
-					&& errno == EINTR)
-				continue;
-			else if (ret < 0) {
-				warn(_("waitpid failed"));
-				return -1;
-			}
-		} while (0);
+			ret = waitpid(pid, &status, 0);
+		} while (ret == -1 && errno == EINTR);
+
+		if (ret < 0) {
+			warn(_("waitpid failed"));
+			return -1;
+		}
 
 		/* mkswap returns: 0=suss, 1=error */
 		if (WIFEXITED(status) && WEXITSTATUS(status)==0)
-- 
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