From 6993c66389f4d537e3bc90f32aefbb2d50bdca5b Mon Sep 17 00:00:00 2001
From: Norman Rasmussen <norman@rasmussen.co.za>
Date: Fri, 31 Dec 2021 06:58:44 -0800
Subject: [PATCH] Check for too many arguments to hostname

Also use the symbolic value for the success exit code.
---
 system/hostname/hostname_main.c | 8 +++++++-
 1 file changed, 7 insertions(+), 1 deletion(-)

diff --git a/system/hostname/hostname_main.c b/system/hostname/hostname_main.c
index 1c99d563b..f56fd463f 100644
--- a/system/hostname/hostname_main.c
+++ b/system/hostname/hostname_main.c
@@ -46,6 +46,12 @@ int main(int argc, FAR char *argv[])
 
   if (argc > 1)
     {
+      if (argc > 2)
+        {
+          fprintf(stderr, "ERROR: Too many arguments\n");
+          return EXIT_FAILURE;
+        }
+
       ret = sethostname(argv[1], strlen(argv[1]));
       if (ret != 0)
         {
@@ -65,5 +71,5 @@ int main(int argc, FAR char *argv[])
       printf("%s\n", hostname);
     }
 
-  return 0;
+  return EXIT_SUCCESS;
 }