xserver libX11 libXdmcp pixman git update 22-12-2010

1 files changed, 753 insertions, 758 deletions

diff --git a/xorg-server/hw/xfree86/common/xf86Events.c b/xorg-server/hw/xfree86/common/xf86Events.c
index 004807483..84c0d182a 100644
--- a/xorg-server/hw/xfree86/common/xf86Events.c
+++ b/xorg-server/hw/xfree86/common/xf86Events.c
@@ -1,758 +1,753 @@
-/*

- * Copyright 1990,91 by Thomas Roell, Dinkelscherben, Germany.

- *

- * Permission to use, copy, modify, distribute, and sell this software and its

- * documentation for any purpose is hereby granted without fee, provided that

- * the above copyright notice appear in all copies and that both that

- * copyright notice and this permission notice appear in supporting

- * documentation, and that the name of Thomas Roell not be used in

- * advertising or publicity pertaining to distribution of the software without

- * specific, written prior permission.  Thomas Roell makes no representations

- * about the suitability of this software for any purpose.  It is provided

- * "as is" without express or implied warranty.

- *

- * THOMAS ROELL DISCLAIMS ALL WARRANTIES WITH REGARD TO THIS SOFTWARE,

- * INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS, IN NO

- * EVENT SHALL THOMAS ROELL BE LIABLE FOR ANY SPECIAL, INDIRECT OR

- * CONSEQUENTIAL DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM LOSS OF USE,

- * DATA OR PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER

- * TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR

- * PERFORMANCE OF THIS SOFTWARE.

- *

- */

-/*

- * Copyright (c) 1994-2003 by The XFree86 Project, Inc.

- *

- * Permission is hereby granted, free of charge, to any person obtaining a

- * copy of this software and associated documentation files (the "Software"),

- * to deal in the Software without restriction, including without limitation

- * the rights to use, copy, modify, merge, publish, distribute, sublicense,

- * and/or sell copies of the Software, and to permit persons to whom the

- * Software is furnished to do so, subject to the following conditions:

- *

- * The above copyright notice and this permission notice shall be included in

- * all copies or substantial portions of the Software.

- *

- * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR

- * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,

- * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.  IN NO EVENT SHALL

- * THE COPYRIGHT HOLDER(S) OR AUTHOR(S) BE LIABLE FOR ANY CLAIM, DAMAGES OR

- * OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE,

- * ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR

- * OTHER DEALINGS IN THE SOFTWARE.

- *

- * Except as contained in this notice, the name of the copyright holder(s)

- * and author(s) shall not be used in advertising or otherwise to promote

- * the sale, use or other dealings in this Software without prior written

- * authorization from the copyright holder(s) and author(s).

- */

-

-/* [JCH-96/01/21] Extended std reverse map to four buttons. */

-

-#ifdef HAVE_XORG_CONFIG_H

-#include <xorg-config.h>

-#endif

-

-#include <X11/X.h>

-#include <X11/Xpoll.h>

-#include <X11/Xproto.h>

-#include "misc.h"

-#include "compiler.h"

-#include "xf86.h"

-#include "xf86Priv.h"

-#define XF86_OS_PRIVS

-#include "xf86_OSlib.h"

-#include <X11/keysym.h>

-

-#ifdef XFreeXDGA

-#include "dgaproc.h"

-#endif

-

-#include <X11/extensions/XI.h>

-#include <X11/extensions/XIproto.h>

-#include "inputstr.h"

-#include "xf86Xinput.h"

-

-#include "mi.h"

-#include "mipointer.h"

-

-#include "xkbsrv.h"

-#include "xkbstr.h"

-

-#ifdef DPMSExtension

-#include <X11/extensions/dpmsconst.h>

-#include "dpmsproc.h"

-#endif

-

-/*

- * This is a toggling variable:

- *  FALSE = No VT switching keys have been pressed last time around

- *  TRUE  = Possible VT switch Pending

- * (DWH - 12/2/93)

- *

- * This has been generalised to work with Linux and *BSD+syscons (DHD)

- */

-

-Bool VTSwitchEnabled = TRUE;		/* Allows run-time disabling for

-                                         *BSD and for avoiding VT

-                                         switches when using the DRI

-                                         automatic full screen mode.*/

-

-extern fd_set EnabledDevices;

-

-#ifdef XF86PM

-extern void (*xf86OSPMClose)(void);

-#endif

-

-static void xf86VTSwitch(void);

-

-/*

- * Allow arbitrary drivers or other XFree86 code to register with our main

- * Wakeup handler.

- */

-typedef struct x_IHRec {

-    int			fd;

-    InputHandlerProc	ihproc;

-    pointer		data;

-    Bool		enabled;

-    struct x_IHRec *	next;

-} IHRec, *IHPtr;

-

-static IHPtr InputHandlers = NULL;

-

-

-Bool

-LegalModifier(unsigned int key, DeviceIntPtr pDev)

-{

-    return TRUE;

-}

-

-/*

- * TimeSinceLastInputEvent --

- *      Function used for screensaver purposes by the os module. Returns the

- *      time in milliseconds since there last was any input.

- */

-int

-TimeSinceLastInputEvent(void)

-{

-  if (xf86Info.lastEventTime == 0) {

-    xf86Info.lastEventTime = GetTimeInMillis();

-  }

-  return GetTimeInMillis() - xf86Info.lastEventTime;

-}

-

-/*

- * SetTimeSinceLastInputEvent --

- *      Set the lastEventTime to now.

- */

-void

-SetTimeSinceLastInputEvent(void)

-{

-  xf86Info.lastEventTime = GetTimeInMillis();

-}

-

-/*

- * ProcessInputEvents --

- *      Retrieve all waiting input events and pass them to DIX in their

- *      correct chronological order. Only reads from the system pointer

- *      and keyboard.

- */

-void

-ProcessInputEvents (void)

-{

-  int x, y;

-

-  mieqProcessInputEvents();

-

-  /* FIXME: This is a problem if we have multiple pointers */

-  miPointerGetPosition(inputInfo.pointer, &x, &y);

-  xf86SetViewport(xf86Info.currentScreen, x, y);

-}

-

-/*

- * Handle keyboard events that cause some kind of "action"

- * (i.e., server termination, video mode changes, VT switches, etc.)

- */

-void

-xf86ProcessActionEvent(ActionEvent action, void *arg)

-{

-    DebugF("ProcessActionEvent(%d,%x)\n", (int) action, arg);

-    switch (action) {

-    case ACTION_TERMINATE:

-	if (!xf86Info.dontZap) {

-#ifdef XFreeXDGA

-	    DGAShutdown();

-#endif

-	    GiveUp(0);

-	}

-	break;

-    case ACTION_NEXT_MODE:

-	if (!xf86Info.dontZoom)

-	    xf86ZoomViewport(xf86Info.currentScreen,  1);

-	break;

-    case ACTION_PREV_MODE:

-	if (!xf86Info.dontZoom)

-	    xf86ZoomViewport(xf86Info.currentScreen, -1);

-	break;

-    case ACTION_SWITCHSCREEN:

-	if (VTSwitchEnabled && !xf86Info.dontVTSwitch && arg) {

-	    int vtno = *((int *) arg);

-

-	    if (vtno != xf86Info.vtno) {

-		if (!xf86VTActivate(vtno)) {

-		    ErrorF("Failed to switch from vt%02d to vt%02d: %s\n",

-			   xf86Info.vtno, vtno, strerror(errno));

-		}

-	    }

-	}

-	break;

-    case ACTION_SWITCHSCREEN_NEXT:

-	if (VTSwitchEnabled && !xf86Info.dontVTSwitch) {

-	    if (!xf86VTActivate(xf86Info.vtno + 1)) {

-		/* If first try failed, assume this is the last VT and

-		 * try wrapping around to the first vt.

-		 */

-		if (!xf86VTActivate(1)) {

-		    ErrorF("Failed to switch from vt%02d to next vt: %s\n",

-			   xf86Info.vtno, strerror(errno));

-		}

-	    }

-	}

-	break;

-    case ACTION_SWITCHSCREEN_PREV:

-	if (VTSwitchEnabled && !xf86Info.dontVTSwitch && xf86Info.vtno > 0) {

-	    if (!xf86VTActivate(xf86Info.vtno - 1)) {

-		/* Don't know what the maximum VT is, so can't wrap around */

-		ErrorF("Failed to switch from vt%02d to previous vt: %s\n",

-		       xf86Info.vtno, strerror(errno));

-	    }

-	}

-	break;

-    default:

-	break;

-    }

-}

-

-/*

- * xf86Wakeup --

- *      Os wakeup handler.

- */

-

-/* ARGSUSED */

-void

-xf86Wakeup(pointer blockData, int err, pointer pReadmask)

-{

-    fd_set* LastSelectMask = (fd_set*)pReadmask;

-    fd_set devicesWithInput;

-    InputInfoPtr pInfo;

-

-    if (err >= 0) {

-

-	XFD_ANDSET(&devicesWithInput, LastSelectMask, &EnabledDevices);

-	if (XFD_ANYSET(&devicesWithInput)) {

-	    pInfo = xf86InputDevs;

-	    while (pInfo) {

-		if (pInfo->read_input && pInfo->fd >= 0 &&

-		    (FD_ISSET(pInfo->fd, &devicesWithInput) != 0)) {

-		    int sigstate = xf86BlockSIGIO();

-

-		    /*

-		     * Remove the descriptior from the set because more than one

-		     * device may share the same file descriptor.

-		     */

-		    FD_CLR(pInfo->fd, &devicesWithInput);

-

-		    pInfo->read_input(pInfo);

-		    xf86UnblockSIGIO(sigstate);

-		}

-		pInfo = pInfo->next;

-	    }

-	}

-    }

-

-    if (err >= 0) { /* we don't want the handlers called if select() */

-	IHPtr ih;   /* returned with an error condition, do we?      */

-	

-	for (ih = InputHandlers; ih; ih = ih->next) {

-	    if (ih->enabled && ih->fd >= 0 && ih->ihproc &&

-		(FD_ISSET(ih->fd, ((fd_set *)pReadmask)) != 0)) {

-		ih->ihproc(ih->fd, ih->data);

-	    }

-	}

-    }

-

-    if (xf86VTSwitchPending()) xf86VTSwitch();

-}

-

-

-/*

- * xf86SigioReadInput --

- *    signal handler for the SIGIO signal.

- */

-static void

-xf86SigioReadInput(int fd, void *closure)

-{

-    int errno_save = errno;

-    InputInfoPtr pInfo = closure;

-

-    pInfo->read_input(pInfo);

-

-    errno = errno_save;

-}

-

-/*

- * xf86AddEnabledDevice --

- *

- */

-void

-xf86AddEnabledDevice(InputInfoPtr pInfo)

-{

-    if (!xf86InstallSIGIOHandler (pInfo->fd, xf86SigioReadInput, pInfo)) {

-	AddEnabledDevice(pInfo->fd);

-    }

-}

-

-/*

- * xf86RemoveEnabledDevice --

- *

- */

-void

-xf86RemoveEnabledDevice(InputInfoPtr pInfo)

-{

-    if (!xf86RemoveSIGIOHandler (pInfo->fd)) {

-	RemoveEnabledDevice(pInfo->fd);

-    }

-}

-

-static int *xf86SignalIntercept = NULL;

-

-void

-xf86InterceptSignals(int *signo)

-{

-    if ((xf86SignalIntercept = signo))

-	*signo = -1;

-}

-

-static void (*xf86SigIllHandler)(void) = NULL;

-

-void

-xf86InterceptSigIll(void (*sigillhandler)(void))

-{

-    xf86SigIllHandler = sigillhandler;

-}

-

-/*

- * xf86SigWrapper --

- *    Catch unexpected signals and exit or continue cleanly.

- */

-int

-xf86SigWrapper(int signo)

-{

-  if ((signo == SIGILL) && xf86SigIllHandler) {

-    (*xf86SigIllHandler)();

-    return 0; /* continue */

-  }

-

-  if (xf86SignalIntercept && (*xf86SignalIntercept < 0)) {

-    *xf86SignalIntercept = signo;

-    return 0; /* continue */

-  }

-

-  xf86Info.caughtSignal = TRUE;

-  return 1; /* abort */

-}

-

-/*

- * xf86PrintBacktrace --

- *    Print a stack backtrace for debugging purposes.

- */

-void

-xf86PrintBacktrace(void)

-{

-    xorg_backtrace();

-}

-

-static void

-xf86ReleaseKeys(DeviceIntPtr pDev)

-{

-    KeyClassPtr keyc;

-    int i, j, nevents, sigstate;

-

-    if (!pDev || !pDev->key)

-        return;

-

-    keyc = pDev->key;

-

-    /*

-     * Hmm... here is the biggest hack of every time !

-     * It may be possible that a switch-vt procedure has finished BEFORE

-     * you released all keys neccessary to do this. That peculiar behavior

-     * can fool the X-server pretty much, cause it assumes that some keys

-     * were not released. TWM may stuck alsmost completly....

-     * OK, what we are doing here is after returning from the vt-switch

-     * exeplicitely unrelease all keyboard keys before the input-devices

-     * are reenabled.

-     */

-

-    for (i = keyc->xkbInfo->desc->min_key_code;

-         i < keyc->xkbInfo->desc->max_key_code;

-         i++) {

-        if (key_is_down(pDev, i, KEY_POSTED)) {

-            sigstate = xf86BlockSIGIO ();

-            nevents = GetKeyboardEvents(xf86Events, pDev, KeyRelease, i);

-            for (j = 0; j < nevents; j++)

-                mieqEnqueue(pDev, (InternalEvent*)(xf86Events + j)->event);

-            xf86UnblockSIGIO(sigstate);

-        }

-    }

-}

-

-/*

- * xf86VTSwitch --

- *      Handle requests for switching the vt.

- */

-static void

-xf86VTSwitch(void)

-{

-  int i, prevSIGIO;

-  InputInfoPtr pInfo;

-  IHPtr ih;

-

-  DebugF("xf86VTSwitch()\n");

-

-#ifdef XFreeXDGA

-  if(!DGAVTSwitch())

-	return;

-#endif

-

-  /*

-   * Since all screens are currently all in the same state it is sufficient

-   * check the first.  This might change in future.

-   */

-  if (xf86Screens[0]->vtSema) {

-

-    DebugF("xf86VTSwitch: Leaving, xf86Exiting is %s\n",

-	   BOOLTOSTRING((dispatchException & DE_TERMINATE) ? TRUE : FALSE));

-#ifdef DPMSExtension

-    if (DPMSPowerLevel != DPMSModeOn)

-	DPMSSet(serverClient, DPMSModeOn);

-#endif

-    for (i = 0; i < xf86NumScreens; i++) {

-      if (!(dispatchException & DE_TERMINATE))

-	if (xf86Screens[i]->EnableDisableFBAccess)

-	  (*xf86Screens[i]->EnableDisableFBAccess) (i, FALSE);

-    }

-

-    /*

-     * Keep the order: Disable Device > LeaveVT

-     *                        EnterVT > EnableDevice

-     */

-    for (ih = InputHandlers; ih; ih = ih->next)

-      xf86DisableInputHandler(ih);

-    for (pInfo = xf86InputDevs; pInfo; pInfo = pInfo->next) {

-      if (pInfo->dev) {

-          xf86ReleaseKeys(pInfo->dev);

-          ProcessInputEvents();

-          DisableDevice(pInfo->dev, TRUE);

-      }

-    }

-    xf86EnterServerState(SETUP);

-    for (i = 0; i < xf86NumScreens; i++)

-	xf86Screens[i]->LeaveVT(i, 0);

-

-    xf86AccessLeave();      /* We need this here, otherwise */

-

-    if (!xf86VTSwitchAway()) {

-      /*

-       * switch failed

-       */

-

-      DebugF("xf86VTSwitch: Leave failed\n");

-      prevSIGIO = xf86BlockSIGIO();

-      xf86AccessEnter();

-      xf86EnterServerState(SETUP);

-      for (i = 0; i < xf86NumScreens; i++) {

-	if (!xf86Screens[i]->EnterVT(i, 0))

-	  FatalError("EnterVT failed for screen %d\n", i);

-      }

-      xf86EnterServerState(OPERATING);

-      if (!(dispatchException & DE_TERMINATE)) {

-	for (i = 0; i < xf86NumScreens; i++) {

-	  if (xf86Screens[i]->EnableDisableFBAccess)

-	    (*xf86Screens[i]->EnableDisableFBAccess) (i, TRUE);

-	}

-      }

-      dixSaveScreens(serverClient, SCREEN_SAVER_FORCER, ScreenSaverReset);

-

-      pInfo = xf86InputDevs;

-      while (pInfo) {

-        if (pInfo->dev)

-            EnableDevice(pInfo->dev, TRUE);

-	pInfo = pInfo->next;

-      }

-      for (ih = InputHandlers; ih; ih = ih->next)

-        xf86EnableInputHandler(ih);

-

-      xf86UnblockSIGIO(prevSIGIO);

-

-    } else {

-#ifdef XF86PM

-	  if (xf86OSPMClose)

-	      xf86OSPMClose();

-	  xf86OSPMClose = NULL;

-#endif

-

-	for (i = 0; i < xf86NumScreens; i++) {

- 	    /*

- 	     * zero all access functions to

- 	     * trap calls when switched away.

- 	     */

-	    xf86Screens[i]->vtSema = FALSE;

-	}

-	if (xorgHWAccess)

-	    xf86DisableIO();

-    }

-  } else {

-

-    DebugF("xf86VTSwitch: Entering\n");

-    if (!xf86VTSwitchTo()) return;

-

-    prevSIGIO = xf86BlockSIGIO();

-#ifdef XF86PM

-    xf86OSPMClose = xf86OSPMOpen();

-#endif

-

-    if (xorgHWAccess)

-	xf86EnableIO();

-    xf86AccessEnter();

-    xf86EnterServerState(SETUP);

-    for (i = 0; i < xf86NumScreens; i++) {

-      xf86Screens[i]->vtSema = TRUE;

-      if (!xf86Screens[i]->EnterVT(i, 0))

-	  FatalError("EnterVT failed for screen %d\n", i);

-    }

-    xf86EnterServerState(OPERATING);

-    for (i = 0; i < xf86NumScreens; i++) {

-      if (xf86Screens[i]->EnableDisableFBAccess)

-	(*xf86Screens[i]->EnableDisableFBAccess)(i, TRUE);

-    }

-

-    /* Turn screen saver off when switching back */

-    dixSaveScreens(serverClient, SCREEN_SAVER_FORCER, ScreenSaverReset);

-

-    pInfo = xf86InputDevs;

-    while (pInfo) {

-      if (pInfo->dev)

-          EnableDevice(pInfo->dev, TRUE);

-      pInfo = pInfo->next;

-    }

-

-    for (ih = InputHandlers; ih; ih = ih->next)

-      xf86EnableInputHandler(ih);

-

-    xf86UnblockSIGIO(prevSIGIO);

-  }

-}

-

-

-/* Input handler registration */

-

-static pointer

-addInputHandler(int fd, InputHandlerProc proc, pointer data)

-{

-    IHPtr ih;

-

-    if (fd < 0 || !proc)

-	return NULL;

-

-    ih = calloc(sizeof(*ih), 1);

-    if (!ih)

-	return NULL;

-

-    ih->fd = fd;

-    ih->ihproc = proc;

-    ih->data = data;

-    ih->enabled = TRUE;

-

-    ih->next = InputHandlers;

-    InputHandlers = ih;

-

-    return ih;

-}

-

-pointer

-xf86AddInputHandler(int fd, InputHandlerProc proc, pointer data)

-{

-    IHPtr ih = addInputHandler(fd, proc, data);

-

-    if (ih)

-        AddEnabledDevice(fd);

-    return ih;

-}

-

-pointer

-xf86AddGeneralHandler(int fd, InputHandlerProc proc, pointer data)

-{

-    IHPtr ih = addInputHandler(fd, proc, data);

-

-    if (ih)

-        AddGeneralSocket(fd);

-    return ih;

-}

-

-/**

- * Set the handler for the console's fd. Replaces (and returns) the previous

- * handler or NULL, whichever appropriate.

- * proc may be NULL if the server should not handle events on the console.

- */

-InputHandlerProc

-xf86SetConsoleHandler(InputHandlerProc proc, pointer data)

-{

-    static InputHandlerProc handler = NULL;

-    InputHandlerProc old_handler = handler;

-

-    if (old_handler)

-        xf86RemoveGeneralHandler(old_handler);

-

-    xf86AddGeneralHandler(xf86Info.consoleFd, proc, data);

-    handler = proc;

-

-    return old_handler;

-}

-

-static void

-removeInputHandler(IHPtr ih)

-{

-    IHPtr p;

-

-    if (ih == InputHandlers)

-	InputHandlers = ih->next;

-    else {

-	p = InputHandlers;

-	while (p && p->next != ih)

-	    p = p->next;

-	if (ih)

-	    p->next = ih->next;

-    }

-    free(ih);

-}

-

-int

-xf86RemoveInputHandler(pointer handler)

-{

-    IHPtr ih;

-    int fd;

-

-    if (!handler)

-	return -1;

-

-    ih = handler;

-    fd = ih->fd;

-

-    if (ih->fd >= 0)

-	RemoveEnabledDevice(ih->fd);

-    removeInputHandler(ih);

-

-    return fd;

-}

-

-int

-xf86RemoveGeneralHandler(pointer handler)

-{

-    IHPtr ih;

-    int fd;

-

-    if (!handler)

-	return -1;

-

-    ih = handler;

-    fd = ih->fd;

-

-    if (ih->fd >= 0)

-	RemoveGeneralSocket(ih->fd);

-    removeInputHandler(ih);

-

-    return fd;

-}

-

-void

-xf86DisableInputHandler(pointer handler)

-{

-    IHPtr ih;

-

-    if (!handler)

-	return;

-

-    ih = handler;

-    ih->enabled = FALSE;

-    if (ih->fd >= 0)

-	RemoveEnabledDevice(ih->fd);

-}

-

-void

-xf86DisableGeneralHandler(pointer handler)

-{

-    IHPtr ih;

-

-    if (!handler)

-	return;

-

-    ih = handler;

-    ih->enabled = FALSE;

-    if (ih->fd >= 0)

-	RemoveGeneralSocket(ih->fd);

-}

-

-void

-xf86EnableInputHandler(pointer handler)

-{

-    IHPtr ih;

-

-    if (!handler)

-	return;

-

-    ih = handler;

-    ih->enabled = TRUE;

-    if (ih->fd >= 0)

-	AddEnabledDevice(ih->fd);

-}

-

-void

-xf86EnableGeneralHandler(pointer handler)

-{

-    IHPtr ih;

-

-    if (!handler)

-	return;

-

-    ih = handler;

-    ih->enabled = TRUE;

-    if (ih->fd >= 0)

-	AddGeneralSocket(ih->fd);

-}

-

-/*

- * As used currently by the DRI, the return value is ignored.

- */

-Bool

-xf86EnableVTSwitch(Bool new)

-{

-    static Bool def = TRUE;

-    Bool old;

-

-    old = VTSwitchEnabled;

-    if (!new) {

-	/* Disable VT switching */

-	def = VTSwitchEnabled;

-	VTSwitchEnabled = FALSE;

-    } else {

-	/* Restore VT switching to default */

-	VTSwitchEnabled = def;

-    }

-    return old;

-}

-

-void

-DDXRingBell(int volume, int pitch, int duration) {

-    xf86OSRingBell(volume, pitch, duration);

-}

+/*
+ * Copyright 1990,91 by Thomas Roell, Dinkelscherben, Germany.
+ *
+ * Permission to use, copy, modify, distribute, and sell this software and its
+ * documentation for any purpose is hereby granted without fee, provided that
+ * the above copyright notice appear in all copies and that both that
+ * copyright notice and this permission notice appear in supporting
+ * documentation, and that the name of Thomas Roell not be used in
+ * advertising or publicity pertaining to distribution of the software without
+ * specific, written prior permission.  Thomas Roell makes no representations
+ * about the suitability of this software for any purpose.  It is provided
+ * "as is" without express or implied warranty.
+ *
+ * THOMAS ROELL DISCLAIMS ALL WARRANTIES WITH REGARD TO THIS SOFTWARE,
+ * INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS, IN NO
+ * EVENT SHALL THOMAS ROELL BE LIABLE FOR ANY SPECIAL, INDIRECT OR
+ * CONSEQUENTIAL DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM LOSS OF USE,
+ * DATA OR PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER
+ * TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR
+ * PERFORMANCE OF THIS SOFTWARE.
+ *
+ */
+/*
+ * Copyright (c) 1994-2003 by The XFree86 Project, Inc.
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a
+ * copy of this software and associated documentation files (the "Software"),
+ * to deal in the Software without restriction, including without limitation
+ * the rights to use, copy, modify, merge, publish, distribute, sublicense,
+ * and/or sell copies of the Software, and to permit persons to whom the
+ * Software is furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be included in
+ * all copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.  IN NO EVENT SHALL
+ * THE COPYRIGHT HOLDER(S) OR AUTHOR(S) BE LIABLE FOR ANY CLAIM, DAMAGES OR
+ * OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE,
+ * ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
+ * OTHER DEALINGS IN THE SOFTWARE.
+ *
+ * Except as contained in this notice, the name of the copyright holder(s)
+ * and author(s) shall not be used in advertising or otherwise to promote
+ * the sale, use or other dealings in this Software without prior written
+ * authorization from the copyright holder(s) and author(s).
+ */
+
+/* [JCH-96/01/21] Extended std reverse map to four buttons. */
+
+#ifdef HAVE_XORG_CONFIG_H
+#include <xorg-config.h>
+#endif
+
+#include <X11/X.h>
+#include <X11/Xpoll.h>
+#include <X11/Xproto.h>
+#include "misc.h"
+#include "compiler.h"
+#include "xf86.h"
+#include "xf86Priv.h"
+#define XF86_OS_PRIVS
+#include "xf86_OSlib.h"
+#include <X11/keysym.h>
+
+#ifdef XFreeXDGA
+#include "dgaproc.h"
+#endif
+
+#include <X11/extensions/XI.h>
+#include <X11/extensions/XIproto.h>
+#include "inputstr.h"
+#include "xf86Xinput.h"
+
+#include "mi.h"
+#include "mipointer.h"
+
+#include "xkbsrv.h"
+#include "xkbstr.h"
+
+#ifdef DPMSExtension
+#include <X11/extensions/dpmsconst.h>
+#include "dpmsproc.h"
+#endif
+
+/*
+ * This is a toggling variable:
+ *  FALSE = No VT switching keys have been pressed last time around
+ *  TRUE  = Possible VT switch Pending
+ * (DWH - 12/2/93)
+ *
+ * This has been generalised to work with Linux and *BSD+syscons (DHD)
+ */
+
+Bool VTSwitchEnabled = TRUE;		/* Allows run-time disabling for
+                                         *BSD and for avoiding VT
+                                         switches when using the DRI
+                                         automatic full screen mode.*/
+
+extern fd_set EnabledDevices;
+
+#ifdef XF86PM
+extern void (*xf86OSPMClose)(void);
+#endif
+
+static void xf86VTSwitch(void);
+
+/*
+ * Allow arbitrary drivers or other XFree86 code to register with our main
+ * Wakeup handler.
+ */
+typedef struct x_IHRec {
+    int			fd;
+    InputHandlerProc	ihproc;
+    pointer		data;
+    Bool		enabled;
+    struct x_IHRec *	next;
+} IHRec, *IHPtr;
+
+static IHPtr InputHandlers = NULL;
+
+
+Bool
+LegalModifier(unsigned int key, DeviceIntPtr pDev)
+{
+    return TRUE;
+}
+
+/*
+ * TimeSinceLastInputEvent --
+ *      Function used for screensaver purposes by the os module. Returns the
+ *      time in milliseconds since there last was any input.
+ */
+int
+TimeSinceLastInputEvent(void)
+{
+  if (xf86Info.lastEventTime == 0) {
+    xf86Info.lastEventTime = GetTimeInMillis();
+  }
+  return GetTimeInMillis() - xf86Info.lastEventTime;
+}
+
+/*
+ * SetTimeSinceLastInputEvent --
+ *      Set the lastEventTime to now.
+ */
+void
+SetTimeSinceLastInputEvent(void)
+{
+  xf86Info.lastEventTime = GetTimeInMillis();
+}
+
+/*
+ * ProcessInputEvents --
+ *      Retrieve all waiting input events and pass them to DIX in their
+ *      correct chronological order. Only reads from the system pointer
+ *      and keyboard.
+ */
+void
+ProcessInputEvents (void)
+{
+  int x, y;
+
+  mieqProcessInputEvents();
+
+  /* FIXME: This is a problem if we have multiple pointers */
+  miPointerGetPosition(inputInfo.pointer, &x, &y);
+  xf86SetViewport(xf86Info.currentScreen, x, y);
+}
+
+/*
+ * Handle keyboard events that cause some kind of "action"
+ * (i.e., server termination, video mode changes, VT switches, etc.)
+ */
+void
+xf86ProcessActionEvent(ActionEvent action, void *arg)
+{
+    DebugF("ProcessActionEvent(%d,%x)\n", (int) action, arg);
+    switch (action) {
+    case ACTION_TERMINATE:
+	if (!xf86Info.dontZap) {
+#ifdef XFreeXDGA
+	    DGAShutdown();
+#endif
+	    GiveUp(0);
+	}
+	break;
+    case ACTION_NEXT_MODE:
+	if (!xf86Info.dontZoom)
+	    xf86ZoomViewport(xf86Info.currentScreen,  1);
+	break;
+    case ACTION_PREV_MODE:
+	if (!xf86Info.dontZoom)
+	    xf86ZoomViewport(xf86Info.currentScreen, -1);
+	break;
+    case ACTION_SWITCHSCREEN:
+	if (VTSwitchEnabled && !xf86Info.dontVTSwitch && arg) {
+	    int vtno = *((int *) arg);
+
+	    if (vtno != xf86Info.vtno) {
+		if (!xf86VTActivate(vtno)) {
+		    ErrorF("Failed to switch from vt%02d to vt%02d: %s\n",
+			   xf86Info.vtno, vtno, strerror(errno));
+		}
+	    }
+	}
+	break;
+    case ACTION_SWITCHSCREEN_NEXT:
+	if (VTSwitchEnabled && !xf86Info.dontVTSwitch) {
+	    if (!xf86VTActivate(xf86Info.vtno + 1)) {
+		/* If first try failed, assume this is the last VT and
+		 * try wrapping around to the first vt.
+		 */
+		if (!xf86VTActivate(1)) {
+		    ErrorF("Failed to switch from vt%02d to next vt: %s\n",
+			   xf86Info.vtno, strerror(errno));
+		}
+	    }
+	}
+	break;
+    case ACTION_SWITCHSCREEN_PREV:
+	if (VTSwitchEnabled && !xf86Info.dontVTSwitch && xf86Info.vtno > 0) {
+	    if (!xf86VTActivate(xf86Info.vtno - 1)) {
+		/* Don't know what the maximum VT is, so can't wrap around */
+		ErrorF("Failed to switch from vt%02d to previous vt: %s\n",
+		       xf86Info.vtno, strerror(errno));
+	    }
+	}
+	break;
+    default:
+	break;
+    }
+}
+
+/*
+ * xf86Wakeup --
+ *      Os wakeup handler.
+ */
+
+/* ARGSUSED */
+void
+xf86Wakeup(pointer blockData, int err, pointer pReadmask)
+{
+    fd_set* LastSelectMask = (fd_set*)pReadmask;
+    fd_set devicesWithInput;
+    InputInfoPtr pInfo;
+
+    if (err >= 0) {
+
+	XFD_ANDSET(&devicesWithInput, LastSelectMask, &EnabledDevices);
+	if (XFD_ANYSET(&devicesWithInput)) {
+	    pInfo = xf86InputDevs;
+	    while (pInfo) {
+		if (pInfo->read_input && pInfo->fd >= 0 &&
+		    (FD_ISSET(pInfo->fd, &devicesWithInput) != 0)) {
+		    int sigstate = xf86BlockSIGIO();
+
+		    /*
+		     * Remove the descriptior from the set because more than one
+		     * device may share the same file descriptor.
+		     */
+		    FD_CLR(pInfo->fd, &devicesWithInput);
+
+		    pInfo->read_input(pInfo);
+		    xf86UnblockSIGIO(sigstate);
+		}
+		pInfo = pInfo->next;
+	    }
+	}
+    }
+
+    if (err >= 0) { /* we don't want the handlers called if select() */
+	IHPtr ih;   /* returned with an error condition, do we?      */
+	
+	for (ih = InputHandlers; ih; ih = ih->next) {
+	    if (ih->enabled && ih->fd >= 0 && ih->ihproc &&
+		(FD_ISSET(ih->fd, ((fd_set *)pReadmask)) != 0)) {
+		ih->ihproc(ih->fd, ih->data);
+	    }
+	}
+    }
+
+    if (xf86VTSwitchPending()) xf86VTSwitch();
+}
+
+
+/*
+ * xf86SigioReadInput --
+ *    signal handler for the SIGIO signal.
+ */
+static void
+xf86SigioReadInput(int fd, void *closure)
+{
+    int errno_save = errno;
+    InputInfoPtr pInfo = closure;
+
+    pInfo->read_input(pInfo);
+
+    errno = errno_save;
+}
+
+/*
+ * xf86AddEnabledDevice --
+ *
+ */
+void
+xf86AddEnabledDevice(InputInfoPtr pInfo)
+{
+    if (!xf86InstallSIGIOHandler (pInfo->fd, xf86SigioReadInput, pInfo)) {
+	AddEnabledDevice(pInfo->fd);
+    }
+}
+
+/*
+ * xf86RemoveEnabledDevice --
+ *
+ */
+void
+xf86RemoveEnabledDevice(InputInfoPtr pInfo)
+{
+    if (!xf86RemoveSIGIOHandler (pInfo->fd)) {
+	RemoveEnabledDevice(pInfo->fd);
+    }
+}
+
+static int *xf86SignalIntercept = NULL;
+
+void
+xf86InterceptSignals(int *signo)
+{
+    if ((xf86SignalIntercept = signo))
+	*signo = -1;
+}
+
+static void (*xf86SigIllHandler)(void) = NULL;
+
+void
+xf86InterceptSigIll(void (*sigillhandler)(void))
+{
+    xf86SigIllHandler = sigillhandler;
+}
+
+/*
+ * xf86SigWrapper --
+ *    Catch unexpected signals and exit or continue cleanly.
+ */
+int
+xf86SigWrapper(int signo)
+{
+  if ((signo == SIGILL) && xf86SigIllHandler) {
+    (*xf86SigIllHandler)();
+    return 0; /* continue */
+  }
+
+  if (xf86SignalIntercept && (*xf86SignalIntercept < 0)) {
+    *xf86SignalIntercept = signo;
+    return 0; /* continue */
+  }
+
+  xf86Info.caughtSignal = TRUE;
+  return 1; /* abort */
+}
+
+/*
+ * xf86PrintBacktrace --
+ *    Print a stack backtrace for debugging purposes.
+ */
+void
+xf86PrintBacktrace(void)
+{
+    xorg_backtrace();
+}
+
+static void
+xf86ReleaseKeys(DeviceIntPtr pDev)
+{
+    KeyClassPtr keyc;
+    int i, j, nevents, sigstate;
+
+    if (!pDev || !pDev->key)
+        return;
+
+    keyc = pDev->key;
+
+    /*
+     * Hmm... here is the biggest hack of every time !
+     * It may be possible that a switch-vt procedure has finished BEFORE
+     * you released all keys neccessary to do this. That peculiar behavior
+     * can fool the X-server pretty much, cause it assumes that some keys
+     * were not released. TWM may stuck alsmost completly....
+     * OK, what we are doing here is after returning from the vt-switch
+     * exeplicitely unrelease all keyboard keys before the input-devices
+     * are reenabled.
+     */
+
+    for (i = keyc->xkbInfo->desc->min_key_code;
+         i < keyc->xkbInfo->desc->max_key_code;
+         i++) {
+        if (key_is_down(pDev, i, KEY_POSTED)) {
+            sigstate = xf86BlockSIGIO ();
+            nevents = GetKeyboardEvents(xf86Events, pDev, KeyRelease, i);
+            for (j = 0; j < nevents; j++)
+                mieqEnqueue(pDev, (InternalEvent*)(xf86Events + j)->event);
+            xf86UnblockSIGIO(sigstate);
+        }
+    }
+}
+
+/*
+ * xf86VTSwitch --
+ *      Handle requests for switching the vt.
+ */
+static void
+xf86VTSwitch(void)
+{
+  int i;
+  static int prevSIGIO;
+  InputInfoPtr pInfo;
+  IHPtr ih;
+
+  DebugF("xf86VTSwitch()\n");
+
+#ifdef XFreeXDGA
+  if(!DGAVTSwitch())
+	return;
+#endif
+
+  /*
+   * Since all screens are currently all in the same state it is sufficient
+   * check the first.  This might change in future.
+   */
+  if (xf86Screens[0]->vtSema) {
+
+    DebugF("xf86VTSwitch: Leaving, xf86Exiting is %s\n",
+	   BOOLTOSTRING((dispatchException & DE_TERMINATE) ? TRUE : FALSE));
+#ifdef DPMSExtension
+    if (DPMSPowerLevel != DPMSModeOn)
+	DPMSSet(serverClient, DPMSModeOn);
+#endif
+    for (i = 0; i < xf86NumScreens; i++) {
+      if (!(dispatchException & DE_TERMINATE))
+	if (xf86Screens[i]->EnableDisableFBAccess)
+	  (*xf86Screens[i]->EnableDisableFBAccess) (i, FALSE);
+    }
+
+    /*
+     * Keep the order: Disable Device > LeaveVT
+     *                        EnterVT > EnableDevice
+     */
+    for (ih = InputHandlers; ih; ih = ih->next)
+      xf86DisableInputHandler(ih);
+    for (pInfo = xf86InputDevs; pInfo; pInfo = pInfo->next) {
+      if (pInfo->dev) {
+          xf86ReleaseKeys(pInfo->dev);
+          ProcessInputEvents();
+          DisableDevice(pInfo->dev, TRUE);
+      }
+    }
+
+    prevSIGIO = xf86BlockSIGIO();
+    for (i = 0; i < xf86NumScreens; i++)
+	xf86Screens[i]->LeaveVT(i, 0);
+
+    xf86AccessLeave();      /* We need this here, otherwise */
+
+    if (!xf86VTSwitchAway()) {
+      /*
+       * switch failed
+       */
+
+      DebugF("xf86VTSwitch: Leave failed\n");
+      xf86AccessEnter();
+      for (i = 0; i < xf86NumScreens; i++) {
+	if (!xf86Screens[i]->EnterVT(i, 0))
+	  FatalError("EnterVT failed for screen %d\n", i);
+      }
+      if (!(dispatchException & DE_TERMINATE)) {
+	for (i = 0; i < xf86NumScreens; i++) {
+	  if (xf86Screens[i]->EnableDisableFBAccess)
+	    (*xf86Screens[i]->EnableDisableFBAccess) (i, TRUE);
+	}
+      }
+      dixSaveScreens(serverClient, SCREEN_SAVER_FORCER, ScreenSaverReset);
+
+      pInfo = xf86InputDevs;
+      while (pInfo) {
+        if (pInfo->dev)
+            EnableDevice(pInfo->dev, TRUE);
+	pInfo = pInfo->next;
+      }
+      for (ih = InputHandlers; ih; ih = ih->next)
+        xf86EnableInputHandler(ih);
+
+      xf86UnblockSIGIO(prevSIGIO);
+
+    } else {
+#ifdef XF86PM
+	  if (xf86OSPMClose)
+	      xf86OSPMClose();
+	  xf86OSPMClose = NULL;
+#endif
+
+	for (i = 0; i < xf86NumScreens; i++) {
+ 	    /*
+ 	     * zero all access functions to
+ 	     * trap calls when switched away.
+ 	     */
+	    xf86Screens[i]->vtSema = FALSE;
+	}
+	if (xorgHWAccess)
+	    xf86DisableIO();
+    }
+  } else {
+    DebugF("xf86VTSwitch: Entering\n");
+    if (!xf86VTSwitchTo()) return;
+
+#ifdef XF86PM
+    xf86OSPMClose = xf86OSPMOpen();
+#endif
+
+    if (xorgHWAccess)
+	xf86EnableIO();
+    xf86AccessEnter();
+    for (i = 0; i < xf86NumScreens; i++) {
+      xf86Screens[i]->vtSema = TRUE;
+      if (!xf86Screens[i]->EnterVT(i, 0))
+	  FatalError("EnterVT failed for screen %d\n", i);
+    }
+    for (i = 0; i < xf86NumScreens; i++) {
+      if (xf86Screens[i]->EnableDisableFBAccess)
+	(*xf86Screens[i]->EnableDisableFBAccess)(i, TRUE);
+    }
+
+    /* Turn screen saver off when switching back */
+    dixSaveScreens(serverClient, SCREEN_SAVER_FORCER, ScreenSaverReset);
+
+    pInfo = xf86InputDevs;
+    while (pInfo) {
+      if (pInfo->dev)
+          EnableDevice(pInfo->dev, TRUE);
+      pInfo = pInfo->next;
+    }
+
+    for (ih = InputHandlers; ih; ih = ih->next)
+      xf86EnableInputHandler(ih);
+
+    xf86UnblockSIGIO(prevSIGIO);
+  }
+}
+
+
+/* Input handler registration */
+
+static pointer
+addInputHandler(int fd, InputHandlerProc proc, pointer data)
+{
+    IHPtr ih;
+
+    if (fd < 0 || !proc)
+	return NULL;
+
+    ih = calloc(sizeof(*ih), 1);
+    if (!ih)
+	return NULL;
+
+    ih->fd = fd;
+    ih->ihproc = proc;
+    ih->data = data;
+    ih->enabled = TRUE;
+
+    ih->next = InputHandlers;
+    InputHandlers = ih;
+
+    return ih;
+}
+
+pointer
+xf86AddInputHandler(int fd, InputHandlerProc proc, pointer data)
+{
+    IHPtr ih = addInputHandler(fd, proc, data);
+
+    if (ih)
+        AddEnabledDevice(fd);
+    return ih;
+}
+
+pointer
+xf86AddGeneralHandler(int fd, InputHandlerProc proc, pointer data)
+{
+    IHPtr ih = addInputHandler(fd, proc, data);
+
+    if (ih)
+        AddGeneralSocket(fd);
+    return ih;
+}
+
+/**
+ * Set the handler for the console's fd. Replaces (and returns) the previous
+ * handler or NULL, whichever appropriate.
+ * proc may be NULL if the server should not handle events on the console.
+ */
+InputHandlerProc
+xf86SetConsoleHandler(InputHandlerProc proc, pointer data)
+{
+    static InputHandlerProc handler = NULL;
+    InputHandlerProc old_handler = handler;
+
+    if (old_handler)
+        xf86RemoveGeneralHandler(old_handler);
+
+    xf86AddGeneralHandler(xf86Info.consoleFd, proc, data);
+    handler = proc;
+
+    return old_handler;
+}
+
+static void
+removeInputHandler(IHPtr ih)
+{
+    IHPtr p;
+
+    if (ih == InputHandlers)
+	InputHandlers = ih->next;
+    else {
+	p = InputHandlers;
+	while (p && p->next != ih)
+	    p = p->next;
+	if (ih)
+	    p->next = ih->next;
+    }
+    free(ih);
+}
+
+int
+xf86RemoveInputHandler(pointer handler)
+{
+    IHPtr ih;
+    int fd;
+
+    if (!handler)
+	return -1;
+
+    ih = handler;
+    fd = ih->fd;
+
+    if (ih->fd >= 0)
+	RemoveEnabledDevice(ih->fd);
+    removeInputHandler(ih);
+
+    return fd;
+}
+
+int
+xf86RemoveGeneralHandler(pointer handler)
+{
+    IHPtr ih;
+    int fd;
+
+    if (!handler)
+	return -1;
+
+    ih = handler;
+    fd = ih->fd;
+
+    if (ih->fd >= 0)
+	RemoveGeneralSocket(ih->fd);
+    removeInputHandler(ih);
+
+    return fd;
+}
+
+void
+xf86DisableInputHandler(pointer handler)
+{
+    IHPtr ih;
+
+    if (!handler)
+	return;
+
+    ih = handler;
+    ih->enabled = FALSE;
+    if (ih->fd >= 0)
+	RemoveEnabledDevice(ih->fd);
+}
+
+void
+xf86DisableGeneralHandler(pointer handler)
+{
+    IHPtr ih;
+
+    if (!handler)
+	return;
+
+    ih = handler;
+    ih->enabled = FALSE;
+    if (ih->fd >= 0)
+	RemoveGeneralSocket(ih->fd);
+}
+
+void
+xf86EnableInputHandler(pointer handler)
+{
+    IHPtr ih;
+
+    if (!handler)
+	return;
+
+    ih = handler;
+    ih->enabled = TRUE;
+    if (ih->fd >= 0)
+	AddEnabledDevice(ih->fd);
+}
+
+void
+xf86EnableGeneralHandler(pointer handler)
+{
+    IHPtr ih;
+
+    if (!handler)
+	return;
+
+    ih = handler;
+    ih->enabled = TRUE;
+    if (ih->fd >= 0)
+	AddGeneralSocket(ih->fd);
+}
+
+/*
+ * As used currently by the DRI, the return value is ignored.
+ */
+Bool
+xf86EnableVTSwitch(Bool new)
+{
+    static Bool def = TRUE;
+    Bool old;
+
+    old = VTSwitchEnabled;
+    if (!new) {
+	/* Disable VT switching */
+	def = VTSwitchEnabled;
+	VTSwitchEnabled = FALSE;
+    } else {
+	/* Restore VT switching to default */
+	VTSwitchEnabled = def;
+    }
+    return old;
+}
+
+void
+DDXRingBell(int volume, int pitch, int duration) {
+    xf86OSRingBell(volume, pitch, duration);
+}