From: Ben Pfaff <blp@nicira.com>
Date: Wed, 21 Jan 2009 00:34:11 +0000 (-0800)
Subject: daemon: Fix behavior in read_pidfile() when pid file is not locked.
X-Git-Url: https://pintos-os.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=e9f0103ebf7cdaa4f68ebf850c3e57b3b8d351c7;p=openvswitch

daemon: Fix behavior in read_pidfile() when pid file is not locked.
---

diff --git a/lib/daemon.c b/lib/daemon.c
index 38cbc7b2..83465493 100644
--- a/lib/daemon.c
+++ b/lib/daemon.c
@@ -276,6 +276,11 @@ read_pidfile(const char *pidfile)
         VLOG_WARN("%s: fcntl: %s", pidfile, strerror(error));
         goto error;
     }
+    if (lck.l_type == F_UNLCK) {
+        error = ESRCH;
+        VLOG_WARN("%s: pid file is not locked", pidfile);
+        goto error;
+    }
 
     if (!fgets(line, sizeof line, file)) {
         if (ferror(file)) {