daemonize: check setsid() return value

833549ed · Maxim Zakharov · Rusty Russell · 40b6a6ed · 833549ed
Commit 833549ed authored Jul 30, 2015 by Maxim Zakharov Committed by Rusty Russell Jul 30, 2015
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ccan/daemonize/daemonize.c ccan/daemonize/daemonize.c +2 -1

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--- a/ccan/daemonize/daemonize.c
+++ b/ccan/daemonize/daemonize.c
@@ -33,7 +33,8 @@ bool daemonize(void)
 	close(0);

 	/* Session leader so ^C doesn't whack us. */
-	setsid();
+	if (setsid() == (pid_t)-1)
+	        return false;
 	/* Move off any mount points we might be in. */
 	if (chdir("/") != 0)
 		return false;