X-Git-Url: http://git.ipfire.org/?a=blobdiff_plain;f=bridge_track.c;fp=bridge_track.c;h=be555decf79cc8055d22e22c6abf77457e715f38;hb=76eb7423e188f6852ba9ced4352e0d61f4dace4d;hp=da53d9bd8b75127ef466419f91335a01e2a13dff;hpb=28be5578db47550d47ef091ad240dfa933c0baf8;p=people%2Fms%2Frstp.git

diff --git a/bridge_track.c b/bridge_track.c
index da53d9b..be555de 100644
--- a/bridge_track.c
+++ b/bridge_track.c
@@ -386,6 +386,7 @@ void delete_if(struct ifdata *ifc)
 static int stp_enabled(struct ifdata *br)
 {
 	char path[40 + IFNAMSIZ];
+	int ret;
 	sprintf(path, "/sys/class/net/%s/bridge/stp_state", br->name);
 	FILE *f = fopen(path, "r");
 	if (!f) {
@@ -393,7 +394,11 @@ static int stp_enabled(struct ifdata *br)
 		return 0;
 	}
 	int enabled = 0;
-	fscanf(f, "%d", &enabled);
+	ret = fscanf(f, "%d", &enabled);
+	if (!ret) {
+		LOG("%s, stp_state parsing error", path);
+		return 0;
+	}
 	fclose(f);
 	INFO("STP on %s state %d", br->name, enabled);