If no arguments are passed to a subcommand that requires arguments,

error out before we deref a null pointer in the check for max length.

Thanks to otis in IRC for the bug report.

MFC after:	3 days

1 files changed, 3 insertions, 1 deletions

diff --git a/usr.sbin/binmiscctl/binmiscctl.c b/usr.sbin/binmiscctl/binmiscctl.c
index 44122eb..5ab82e4 100644
--- a/usr.sbin/binmiscctl/binmiscctl.c
+++ b/usr.sbin/binmiscctl/binmiscctl.c
@@ -371,8 +371,10 @@ add_cmd(__unused int argc, char *argv[], ximgact_binmisc_entry_t *xbe)
 }
 
 int
-name_cmd(__unused int argc, char *argv[], ximgact_binmisc_entry_t *xbe)
+name_cmd(int argc, char *argv[], ximgact_binmisc_entry_t *xbe)
 {
+	if (argc == 0)
+		usage("Required argument missing\n");
 	if (strlen(argv[0]) > IBE_NAME_MAX)
 		usage("'%s' string length longer than IBE_NAME_MAX (%d)",
 		    IBE_NAME_MAX);