modules/ttyblank.c

   1 /* ttyblank.c -- a console blanking plugin for vlock,
   2  *               the VT locking program for linux
   3  *
   4  * This program is copyright (C) 2007 Frank Benkstein, and is free
   5  * software which is freely distributable under the terms of the
   6  * GNU General Public License version 2, included as the file COPYING in this
   7  * distribution.  It is NOT public domain software, and any
   8  * redistribution not permitted by the GNU General Public License is
   9  * expressly forbidden without prior written permission from
  10  * the author.
  11  *
  12  */
  13
  14 #include <unistd.h>
  15
  16 #include <sys/ioctl.h>
  17 #include <linux/tiocl.h>
  18
  19 #include "vlock_plugin.h"
  20
  21 const char *depends[] = { "all", NULL };
  22
  23 bool vlock_save(void __attribute__ ((__unused__)) ** ctx)
  24 {
  25   char arg[] = { TIOCL_BLANKSCREEN, 0 };
  26   return ioctl(STDIN_FILENO, TIOCLINUX, arg) == 0;
  27 }
  28
  29 bool vlock_save_abort(void __attribute__ ((__unused__)) ** ctx)
  30 {
  31   char arg[] = { TIOCL_UNBLANKSCREEN, 0 };
  32   return ioctl(STDIN_FILENO, TIOCLINUX, arg) == 0;
  33 }