Move the check for the bootstrap port after the args check, so that users can

  run it from the shell to get a usage message.

1 files changed, 4 insertions, 4 deletions

diff --git a/trans/null.c b/trans/null.c
index 3c6cb054..38d0053e 100644
--- a/trans/null.c
+++ b/trans/null.c
@@ -46,10 +46,6 @@ main (int argc, char **argv)
   error_t err;
   mach_port_t bootstrap, control, realnode;
   struct trivfs_control *trivfs_control;
-
-  task_get_bootstrap_port (mach_task_self (), &bootstrap);
-  if (bootstrap == MACH_PORT_NULL)
-    error(1, 0, "must be started as a translator");
   
   if (argc == 2 &&
       (strcmp(argv[1], "-z") == 0 || strcmp(argv[1], "--zero") == 0))
@@ -60,6 +56,10 @@ main (int argc, char **argv)
       exit(1);
     }
 
+  task_get_bootstrap_port (mach_task_self (), &bootstrap);
+  if (bootstrap == MACH_PORT_NULL)
+    error(1, 0, "must be started as a translator");
+
   _libports_initialize();
 
   /* Reply to our parent */