ash,hush: bash compat for ulimit: -w => -x, -p => -u

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

diff --git a/console-tools/chvt.c b/console-tools/chvt.c
index 11e1078b7773999d8786fc015fadadfe59088366..75380a90b95b4db2750e02dcc3a80baf5df5f314 100644 (file)
--- a/console-tools/chvt.c
+++ b/console-tools/chvt.c
@@ -1,43 +1,34 @@
 /* vi: set sw=4 ts=4: */
 /*
- * chvt.c - aeb - 940227 - Change virtual terminal
+ * Mini chvt implementation for busybox
  *
- * busyboxed by Erik Andersen
+ * Copyright (C) 1999-2004 by Erik Andersen <andersen@codepoet.org>
+ *
+ * Licensed under GPLv2 or later, see file LICENSE in this source tree.
  */
+//config:config CHVT
+//config:      bool "chvt (2 kb)"
+//config:      default y
+//config:      select PLATFORM_LINUX
+//config:      help
+//config:      This program is used to change to another terminal.
+//config:      Example: chvt 4 (change to terminal /dev/tty4)
 
-/* getopt not needed */
+//applet:IF_CHVT(APPLET_NOEXEC(chvt, chvt, BB_DIR_USR_BIN, BB_SUID_DROP, chvt))
 
-#include <stdio.h>
-#include <stdlib.h>
-#include <fcntl.h>
-#include <sys/types.h>
-#include <sys/ioctl.h>
-#include "busybox.h"
+//kbuild:lib-$(CONFIG_CHVT) += chvt.o
 
-/* From <linux/vt.h> */
-static const int VT_ACTIVATE = 0x5606;  /* make vt active */
-static const int VT_WAITACTIVE = 0x5607;  /* wait for vt active */
+//usage:#define chvt_trivial_usage
+//usage:       "N"
+//usage:#define chvt_full_usage "\n\n"
+//usage:       "Change the foreground virtual terminal to /dev/ttyN"
 
-int chvt_main(int argc, char **argv)
-{
-       int fd, num;
+#include "libbb.h"
 
-       if ((argc != 2) || (**(argv + 1) == '-'))
-               bb_show_usage();
-       fd = get_console_fd();
-       num = atoi(argv[1]);
-       if (ioctl(fd, VT_ACTIVATE, num))
-               bb_perror_msg_and_die("VT_ACTIVATE");
-       if (ioctl(fd, VT_WAITACTIVE, num))
-               bb_perror_msg_and_die("VT_WAITACTIVE");
+int chvt_main(int argc, char **argv) MAIN_EXTERNALLY_VISIBLE;
+int chvt_main(int argc UNUSED_PARAM, char **argv)
+{
+       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:
-*/