Making note of my changes

[oweals/busybox.git] / deallocvt.c

diff --git a/deallocvt.c b/deallocvt.c
index ae4dbb5a8cc93f4d288f9f983cf0b78d6fa88b28..1e13ff69cef561b310453195fcb12c4b51a60d68 100644 (file)
--- a/deallocvt.c
+++ b/deallocvt.c
@@ -17,8 +17,10 @@ int
 deallocvt_main(int argc, char *argv[]) {
     int fd, num, i;
 
-    if (argc < 1)              /* unlikely */
-      exit(1);
+    if ( ( argc != 2) || (**(argv+1) == '-' ) ) {
+       usage ("deallocvt N\n\nDeallocate unused virtual terminal /dev/ttyN\n");
+    }
+
     progname = argv[0];
 
     fd = get_console_fd("/dev/console");