X-Git-Url: http://git.tuebingen.mpg.de/?a=blobdiff_plain;ds=sidebyside;f=ipc.c;h=478d307e37e4d7f3179596e1b23358cd2528cb77;hb=81d9c8b0e49a12f7b726b06e2df48c2c3314bbcb;hp=65ef20049d26748ef54b6fd60068e7492b159beb;hpb=7da9a331fbbfb10a35fd9d014c47edbad13ffed7;p=dss.git

diff --git a/ipc.c b/ipc.c
index 65ef200..478d307 100644
--- a/ipc.c
+++ b/ipc.c
@@ -345,6 +345,8 @@ int get_dss_pid(char *config_file, pid_t *pid)
 {
 	int ret, semid, key = get_key_or_die(config_file);
 
+	if (pid)
+		*pid = 0;
 	ret = mutex_get(key, 0);
 	if (ret < 0)
 		return ret;
@@ -352,7 +354,8 @@ int get_dss_pid(char *config_file, pid_t *pid)
 	ret = semctl(semid, 1, GETPID);
 	if (ret < 0)
 		return -E_NOT_RUNNING;
-	*pid = ret;
+	if (pid)
+		*pid = ret;
 	ret = mutex_try_lock(semid);
 	if (ret >= 0)
 		return -E_NOT_RUNNING;