From 4a324f635986087c8a609687cc7227f95a413fc4 Mon Sep 17 00:00:00 2001 From: sin Date: Mon, 25 Aug 2014 19:14:34 +0100 Subject: [PATCH] Check for cmd truncation in watch(1) --- watch.c | 9 ++++++--- 1 file changed, 6 insertions(+), 3 deletions(-) diff --git a/watch.c b/watch.c index cd4facc..9d8a9ae 100644 --- a/watch.c +++ b/watch.c @@ -31,10 +31,13 @@ main(int argc, char *argv[]) if (argc < 1) usage(); - strlcpy(cmd, argv[0], sizeof(cmd)); + if (strlcpy(cmd, argv[0], sizeof(cmd)) >= sizeof(cmd)) + eprintf("command too long\n"); for (i = 1; i < argc; i++) { - strlcat(cmd, " ", sizeof(cmd)); - strlcat(cmd, argv[i], sizeof(cmd)); + if (strlcat(cmd, " ", sizeof(cmd)) >= sizeof(cmd)) + eprintf("command too long\n"); + if (strlcat(cmd, argv[i], sizeof(cmd)) >= sizeof(cmd)) + eprintf("command too long\n"); } for (;;) {