From ee1ade379f3e047c0d781a77b0b29d949bdf3749 Mon Sep 17 00:00:00 2001
From: Kevin Lange <kevin.lange@dakko.us>
Date: Mon, 23 Jan 2012 14:24:23 -0600
Subject: [PATCH] [cat] handle load failure without seg faulting

---
 userspace/cat.c | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/userspace/cat.c b/userspace/cat.c
index 6903621f..e9e88e0b 100644
--- a/userspace/cat.c
+++ b/userspace/cat.c
@@ -9,6 +9,9 @@ int main(int argc, char ** argv) {
 	FILE * fd = stdin;
 	if (argc > 1) {
 		fd = fopen(argv[1], "r");
+		if (!fd) {
+			return 1;
+		}
 	}
 
 	size_t length;