-
-\f
-/* VT locking */
-
-#ifdef HAVE_VT_LOCKSWITCH
-static void
-lock_vt (saver_info *si, Bool lock_p)
-{
- saver_preferences *p = &si->prefs;
- static Bool locked_p = False;
- const char *dev_console = "/dev/console";
- int fd;
-
- if (lock_p == locked_p)
- return;
-
- if (lock_p && !p->lock_vt_p)
- return;
-
- fd = open (dev_console, O_RDWR);
- if (fd < 0)
- {
- char buf [255];
- sprintf (buf, "%s: couldn't %s VTs: %s", blurb(),
- (lock_p ? "lock" : "unlock"),
- dev_console);
-#if 0 /* #### doesn't work yet, so don't bother complaining */
- perror (buf);
-#endif
- return;
- }
-
- if (ioctl (fd, (lock_p ? VT_LOCKSWITCH : VT_UNLOCKSWITCH)) == 0)
- {
- locked_p = lock_p;
-
- if (p->verbose_p)
- fprintf (stderr, "%s: %s VTs\n", blurb(),
- (lock_p ? "locked" : "unlocked"));
- }
- else
- {
- char buf [255];
- sprintf (buf, "%s: couldn't %s VTs: ioctl", blurb(),
- (lock_p ? "lock" : "unlock"));
-#if 0 /* #### doesn't work yet, so don't bother complaining */
- perror (buf);
-#endif
- }
-
- close (fd);
-}
-#endif /* HAVE_VT_LOCKSWITCH */