1 files changed, 16 insertions, 0 deletions
diff --git a/userfs.c b/userfs.c
index d3a4923..c263868 100644
--- a/userfs.c
+++ b/userfs.c
@@ -8,8 +8,24 @@ char *args[] = { "echo", "hello", "goodbye", 0 };
 int
 main(void)
 {
+  int fd;
+
   puts("userfs running\n");
   block();
+  fd = open("echo", 0);
+  if(fd >= 0){
+    puts("open echo ok\n");
+    close(fd);
+  } else {
+    puts("open echo failed!\n");
+  }
+  fd = open("doesnotexist", 0);
+  if(fd >= 0){
+    puts("open doesnotexist succeeded!\n");
+    close(fd);
+  } else {
+    puts("open doesnotexist failed\n");
+  }
   exec("echo", args);
   return 0;
 }