Bump to version 1.22.1

[platform/upstream/busybox.git] / console-tools / chvt.c

diff --git a/console-tools/chvt.c b/console-tools/chvt.c
index 252aed7..b9c974f 100644 (file)
--- a/console-tools/chvt.c
+++ b/console-tools/chvt.c
@@ -4,58 +4,20 @@
  *
  * Copyright (C) 1999-2004 by Erik Andersen <andersen@codepoet.org>
  *
- * This program is free software; you can redistribute it and/or modify
- * it under the terms of the GNU General Public License as published by
- * the Free Software Foundation; either version 2 of the License, or
- * (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software
- * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
+ * Licensed under GPLv2 or later, see file LICENSE in this source tree.
  */
 
-/* no options, no getopt */
+//usage:#define chvt_trivial_usage
+//usage:       "N"
+//usage:#define chvt_full_usage "\n\n"
+//usage:       "Change the foreground virtual terminal to /dev/ttyN"
 
-#include <stdio.h>
-#include <stdlib.h>
-#include <fcntl.h>
-#include <sys/types.h>
-#include <sys/ioctl.h>
-#include "busybox.h"
+#include "libbb.h"
 
-/* From <linux/vt.h> */
-enum {
-       VT_ACTIVATE = 0x5606,   /* make vt active */
-       VT_WAITACTIVE = 0x5607  /* wait for vt active */
-};
-
-int chvt_main(int argc, char **argv)
+int chvt_main(int argc, char **argv) MAIN_EXTERNALLY_VISIBLE;
+int chvt_main(int argc UNUSED_PARAM, char **argv)
 {
-       int fd, num;
-
-       if (argc != 2) {
-               bb_show_usage();
-       }
-
-       fd = get_console_fd();
-       num =  bb_xgetlarg(argv[1], 10, 0, INT_MAX);
-       if((-1 == ioctl(fd, VT_ACTIVATE, num)) ||
-          (-1 == ioctl(fd, VT_WAITACTIVE, num))) {
-               bb_perror_msg_and_die("ioctl");
-       }
+       int num = xatou_range(single_argv(argv), 1, 63);
+       console_make_active(get_console_fd_or_die(), num);
        return EXIT_SUCCESS;
 }
-
-
-/*
-Local Variables:
-c-file-style: "linux"
-c-basic-offset: 4
-tab-width: 4
-End:
-*/