From 7e6c37e67e6da62e02089fc3292569103b7e94b3 Mon Sep 17 00:00:00 2001
From: Frans Kaashoek <kaashoek@mit.edu>
Date: Tue, 10 Sep 2019 12:30:10 -0400
Subject: Support exit status for exit/wait One test case for returning a exit
 status Passes usertests, but haven't used it to simplify tests

---
 user/cat.c | 10 +++++-----
 1 file changed, 5 insertions(+), 5 deletions(-)

(limited to 'user/cat.c')

diff --git a/user/cat.c b/user/cat.c
index 52909da..7a0b954 100644
--- a/user/cat.c
+++ b/user/cat.c
@@ -12,12 +12,12 @@ cat(int fd)
   while((n = read(fd, buf, sizeof(buf))) > 0) {
     if (write(1, buf, n) != n) {
       printf("cat: write error\n");
-      exit();
+      exit(-1);
     }
   }
   if(n < 0){
     printf("cat: read error\n");
-    exit();
+    exit(-1);
   }
 }
 
@@ -28,16 +28,16 @@ main(int argc, char *argv[])
 
   if(argc <= 1){
     cat(0);
-    exit();
+    exit(-1);
   }
 
   for(i = 1; i < argc; i++){
     if((fd = open(argv[i], 0)) < 0){
       printf("cat: cannot open %s\n", argv[i]);
-      exit();
+      exit(-1);
     }
     cat(fd);
     close(fd);
   }
-  exit();
+  exit(0);
 }
-- 
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