hw/xfree86/os-support/shared/VTsw_usl.c

   1 /*
   2  * Copyright 1993 by David Wexelblat <dwex@XFree86.org>
   3  *
   4  * Permission to use, copy, modify, distribute, and sell this software and its
   5  * documentation for any purpose is hereby granted without fee, provided that
   6  * the above copyright notice appear in all copies and that both that
   7  * copyright notice and this permission notice appear in supporting
   8  * documentation, and that the name of David Wexelblat not be used in
   9  * advertising or publicity pertaining to distribution of the software without
  10  * specific, written prior permission.  David Wexelblat makes no representations
  11  * about the suitability of this software for any purpose.  It is provided
  12  * "as is" without express or implied warranty.
  13  *
  14  * DAVID WEXELBLAT DISCLAIMS ALL WARRANTIES WITH REGARD TO THIS SOFTWARE,
  15  * INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS, IN NO
  16  * EVENT SHALL DAVID WEXELBLAT BE LIABLE FOR ANY SPECIAL, INDIRECT OR
  17  * CONSEQUENTIAL DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM LOSS OF USE,
  18  * DATA OR PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER
  19  * TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR
  20  * PERFORMANCE OF THIS SOFTWARE.
  21  *
  22  */
  23
  24 #ifdef HAVE_XORG_CONFIG_H
  25 #include <xorg-config.h>
  26 #endif
  27
  28 #include <X11/X.h>
  29
  30 #include "xf86.h"
  31 #include "xf86Priv.h"
  32 #include "xf86_OSlib.h"
  33
  34 /*
  35  * Handle the VT-switching interface for OSs that use USL-style ioctl()s
  36  * (the sysv, sco, and linux subdirs).
  37  */
  38
  39 /*
  40  * This function is the signal handler for the VT-switching signal.  It
  41  * is only referenced inside the OS-support layer.
  42  */
  43 void
  44 xf86VTRequest(int sig)
  45 {
  46     signal(sig, (void (*)(int)) xf86VTRequest);
  47     xf86Info.vtRequestsPending = TRUE;
  48     return;
  49 }
  50
  51 Bool
  52 xf86VTSwitchPending(void)
  53 {
  54     return xf86Info.vtRequestsPending ? TRUE : FALSE;
  55 }
  56
  57 Bool
  58 xf86VTSwitchAway(void)
  59 {
  60     xf86Info.vtRequestsPending = FALSE;
  61     if (ioctl(xf86Info.consoleFd, VT_RELDISP, 1) < 0)
  62         return FALSE;
  63     else
  64         return TRUE;
  65 }
  66
  67 Bool
  68 xf86VTSwitchTo(void)
  69 {
  70     xf86Info.vtRequestsPending = FALSE;
  71     if (ioctl(xf86Info.consoleFd, VT_RELDISP, VT_ACKACQ) < 0)
  72         return FALSE;
  73     else
  74         return TRUE;
  75 }
  76
  77 Bool
  78 xf86VTActivate(int vtno)
  79 {
  80 #ifdef VT_ACTIVATE
  81     if (ioctl(xf86Info.consoleFd, VT_ACTIVATE, vtno) < 0) {
  82         return FALSE;
  83     }
  84 #endif
  85     return TRUE;
  86 }