diff mbox series

[zeus,09/21] qemu-helper-native: showing help shouldn't be an error

Message ID a1d9cfef7f247d616cd6ca482916ad0469e4fc58.1573496794.git.akuster808@gmail.com
State Superseded
Headers show
Series None | expand

Commit Message

Armin Kuster Nov. 11, 2019, 6:29 p.m. UTC 
From: Ross Burton <ross.burton@intel.com>


Displaying a help message if help was requested isn't an error.

Signed-off-by: Ross Burton <ross.burton@intel.com>

Signed-off-by: Armin Kuster <akuster808@gmail.com>

---
 meta/recipes-devtools/qemu/qemu-helper/tunctl.c | 14 ++++++++------
 1 file changed, 8 insertions(+), 6 deletions(-)

-- 
2.7.4

-- 
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diff mbox series

Patch

diff --git a/meta/recipes-devtools/qemu/qemu-helper/tunctl.c b/meta/recipes-devtools/qemu/qemu-helper/tunctl.c
index fc00e99..d745dd0 100644
--- a/meta/recipes-devtools/qemu/qemu-helper/tunctl.c
+++ b/meta/recipes-devtools/qemu/qemu-helper/tunctl.c
@@ -19,7 +19,7 @@ 
 #define TUNSETGROUP   _IOW('T', 206, int)
 #endif
 
-static void Usage(char *name)
+static void Usage(char *name, int status)
 {
   fprintf(stderr, "Create: %s [-b] [-u owner] [-g group] [-t device-name] "
 	  "[-f tun-clone-device]\n", name);
@@ -28,7 +28,7 @@  static void Usage(char *name)
   fprintf(stderr, "The default tun clone device is /dev/net/tun - some systems"
 	  " use\n/dev/misc/net/tun instead\n\n");
   fprintf(stderr, "-b will result in brief output (just the device name)\n");
-  exit(1);
+  exit(status);
 }
 
 int main(int argc, char **argv)
@@ -63,7 +63,7 @@  int main(int argc, char **argv)
 	if(*end != '\0'){
 	  fprintf(stderr, "'%s' is neither a username nor a numeric uid.\n",
 		  optarg);
-	  Usage(name);
+	  Usage(name, 1);
 	}
         break;
       case 'g':
@@ -76,7 +76,7 @@  int main(int argc, char **argv)
 	if(*end != '\0'){
 	  fprintf(stderr, "'%s' is neither a groupname nor a numeric group.\n",
 		  optarg);
-	  Usage(name);
+	  Usage(name, 1);
 	}
         break;
 
@@ -84,8 +84,10 @@  int main(int argc, char **argv)
         tun = optarg;
         break;
       case 'h':
+        Usage(name, 0);
+        break;
       default:
-        Usage(name);
+        Usage(name, 1);
     }
   }
 
@@ -93,7 +95,7 @@  int main(int argc, char **argv)
   argc -= optind;
 
   if(argc > 0)
-    Usage(name);
+    Usage(name, 1);
 
   if((tap_fd = open(file, O_RDWR)) < 0){
     fprintf(stderr, "Failed to open '%s' : ", file);