getopt_ulflags -> getopt32.

[oweals/busybox.git] / console-tools / deallocvt.c

diff --git a/console-tools/deallocvt.c b/console-tools/deallocvt.c
index a4ba851c8428a87d723a556f514094ece9d8b13e..b2e8e2bef3c4afadead4b983218bc522ec5a5a34 100644 (file)
--- a/console-tools/deallocvt.c
+++ b/console-tools/deallocvt.c
@@ -1,8 +1,15 @@
 /* vi: set sw=4 ts=4: */
 /*
- * disalloc.c - aeb - 940501 - Disallocate virtual terminal(s)
- * Renamed deallocvt.
+ * Disallocate virtual terminal(s)
+ *
+ * Copyright (C) 2003 by Tito Ragusa <farmatito@tiscali.it>
+ * Copyright (C) 1999-2004 by Erik Andersen <andersen@codepoet.org>
+ *
+ * Licensed under GPLv2 or later, see file LICENSE in this tarball for details.
  */
+
+/* no options, no getopt */
+
 #include <stdlib.h>
 #include <stdio.h>
 #include <fcntl.h>
@@ -11,33 +18,27 @@
 #include "busybox.h"
 
 /* From <linux/vt.h> */
-static const int VT_DISALLOCATE = 0x5608;  /* free memory associated to vt */
+enum { VT_DISALLOCATE = 0x5608 }; /* free memory associated to vt */
 
 int deallocvt_main(int argc, char *argv[])
 {
-       int fd, num, i;
-
-       //if ((argc > 2) || ((argv == 2) && (**(argv + 1) == '-')))
-       if (argc > 2)
-               bb_show_usage();
+       /* num = 0 deallocate all unused consoles */
+       int num = 0;
 
-       fd = get_console_fd();
-
-       if (argc == 1) {
-               /* deallocate all unused consoles */
-               if (ioctl(fd, VT_DISALLOCATE, 0))
-                       bb_perror_msg_and_die("VT_DISALLOCATE");
-       } else {
-               for (i = 1; i < argc; i++) {
-                       num = atoi(argv[i]);
-                       if (num == 0)
-                               bb_error_msg("0: illegal VT number");
-                       else if (num == 1)
-                               bb_error_msg("VT 1 cannot be deallocated");
-                       else if (ioctl(fd, VT_DISALLOCATE, num))
-                               bb_perror_msg_and_die("VT_DISALLOCATE");
-               }
+       switch (argc) {
+               case 2:
+                       if ((num = bb_xgetlarg(argv[1], 10, 0, INT_MAX)) == 0) {
+                               bb_error_msg_and_die("0: illegal VT number");
+                       }
+               /* Fallthrough */
+               case 1:
+                       break;
+               default:
+                       bb_show_usage();
        }
 
+       if (-1 == ioctl(get_console_fd(), VT_DISALLOCATE, num)) {
+               bb_perror_msg_and_die("VT_DISALLOCATE");
+       }
        return EXIT_SUCCESS;
 }