File: | hw/xfree86/common/xf86Events.c |
Location: | line 711, column 21 |
Description: | Access to field 'next' results in a dereference of a null pointer (loaded from variable 'p') |
1 | /* | |||
2 | * Copyright 1990,91 by Thomas Roell, Dinkelscherben, Germany. | |||
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 Thomas Roell not be used in | |||
9 | * advertising or publicity pertaining to distribution of the software without | |||
10 | * specific, written prior permission. Thomas Roell 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 | * THOMAS ROELL DISCLAIMS ALL WARRANTIES WITH REGARD TO THIS SOFTWARE, | |||
15 | * INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS, IN NO | |||
16 | * EVENT SHALL THOMAS ROELL 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 | * Copyright (c) 1994-2003 by The XFree86 Project, Inc. | |||
25 | * | |||
26 | * Permission is hereby granted, free of charge, to any person obtaining a | |||
27 | * copy of this software and associated documentation files (the "Software"), | |||
28 | * to deal in the Software without restriction, including without limitation | |||
29 | * the rights to use, copy, modify, merge, publish, distribute, sublicense, | |||
30 | * and/or sell copies of the Software, and to permit persons to whom the | |||
31 | * Software is furnished to do so, subject to the following conditions: | |||
32 | * | |||
33 | * The above copyright notice and this permission notice shall be included in | |||
34 | * all copies or substantial portions of the Software. | |||
35 | * | |||
36 | * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR | |||
37 | * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, | |||
38 | * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL | |||
39 | * THE COPYRIGHT HOLDER(S) OR AUTHOR(S) BE LIABLE FOR ANY CLAIM, DAMAGES OR | |||
40 | * OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, | |||
41 | * ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR | |||
42 | * OTHER DEALINGS IN THE SOFTWARE. | |||
43 | * | |||
44 | * Except as contained in this notice, the name of the copyright holder(s) | |||
45 | * and author(s) shall not be used in advertising or otherwise to promote | |||
46 | * the sale, use or other dealings in this Software without prior written | |||
47 | * authorization from the copyright holder(s) and author(s). | |||
48 | */ | |||
49 | ||||
50 | /* [JCH-96/01/21] Extended std reverse map to four buttons. */ | |||
51 | ||||
52 | #ifdef HAVE_XORG_CONFIG_H1 | |||
53 | #include <xorg-config.h> | |||
54 | #endif | |||
55 | ||||
56 | #include <X11/X.h> | |||
57 | #include <X11/Xpoll.h> | |||
58 | #include <X11/Xproto.h> | |||
59 | #include <X11/Xatom.h> | |||
60 | #include "misc.h" | |||
61 | #include "xf86.h" | |||
62 | #include "xf86Priv.h" | |||
63 | #define XF86_OS_PRIVS | |||
64 | #include "xf86_OSlib.h" | |||
65 | #include <X11/keysym.h> | |||
66 | ||||
67 | #ifdef XFreeXDGA1 | |||
68 | #include "dgaproc.h" | |||
69 | #endif | |||
70 | ||||
71 | #include <X11/extensions/XI.h> | |||
72 | #include <X11/extensions/XIproto.h> | |||
73 | #include "inputstr.h" | |||
74 | #include "xf86Xinput.h" | |||
75 | ||||
76 | #include "mi.h" | |||
77 | #include "mipointer.h" | |||
78 | ||||
79 | #include "xkbsrv.h" | |||
80 | #include "xkbstr.h" | |||
81 | ||||
82 | #ifdef DPMSExtension1 | |||
83 | #include <X11/extensions/dpmsconst.h> | |||
84 | #include "dpmsproc.h" | |||
85 | #endif | |||
86 | ||||
87 | #include "xf86platformBus.h" | |||
88 | #include "systemd-logind.h" | |||
89 | ||||
90 | /* | |||
91 | * This is a toggling variable: | |||
92 | * FALSE = No VT switching keys have been pressed last time around | |||
93 | * TRUE = Possible VT switch Pending | |||
94 | * (DWH - 12/2/93) | |||
95 | * | |||
96 | * This has been generalised to work with Linux and *BSD+syscons (DHD) | |||
97 | */ | |||
98 | ||||
99 | Bool VTSwitchEnabled = TRUE1; /* Allows run-time disabling for | |||
100 | *BSD and for avoiding VT | |||
101 | switches when using the DRI | |||
102 | automatic full screen mode.*/ | |||
103 | ||||
104 | extern fd_set EnabledDevices; | |||
105 | ||||
106 | #ifdef XF86PM | |||
107 | extern void (*xf86OSPMClose) (void); | |||
108 | #endif | |||
109 | ||||
110 | static void xf86VTSwitch(void); | |||
111 | ||||
112 | /* | |||
113 | * Allow arbitrary drivers or other XFree86 code to register with our main | |||
114 | * Wakeup handler. | |||
115 | */ | |||
116 | typedef struct x_IHRec { | |||
117 | int fd; | |||
118 | InputHandlerProc ihproc; | |||
119 | void *data; | |||
120 | Bool enabled; | |||
121 | Bool is_input; | |||
122 | struct x_IHRec *next; | |||
123 | } IHRec, *IHPtr; | |||
124 | ||||
125 | static IHPtr InputHandlers = NULL((void*)0); | |||
126 | ||||
127 | Bool | |||
128 | LegalModifier(unsigned int key, DeviceIntPtr pDev) | |||
129 | { | |||
130 | return TRUE1; | |||
131 | } | |||
132 | ||||
133 | /* | |||
134 | * TimeSinceLastInputEvent -- | |||
135 | * Function used for screensaver purposes by the os module. Returns the | |||
136 | * time in milliseconds since there last was any input. | |||
137 | */ | |||
138 | int | |||
139 | TimeSinceLastInputEvent(void) | |||
140 | { | |||
141 | if (xf86Info.lastEventTime == 0) { | |||
142 | xf86Info.lastEventTime = GetTimeInMillis(); | |||
143 | } | |||
144 | return GetTimeInMillis() - xf86Info.lastEventTime; | |||
145 | } | |||
146 | ||||
147 | /* | |||
148 | * SetTimeSinceLastInputEvent -- | |||
149 | * Set the lastEventTime to now. | |||
150 | */ | |||
151 | void | |||
152 | SetTimeSinceLastInputEvent(void) | |||
153 | { | |||
154 | xf86Info.lastEventTime = GetTimeInMillis(); | |||
155 | } | |||
156 | ||||
157 | /* | |||
158 | * ProcessInputEvents -- | |||
159 | * Retrieve all waiting input events and pass them to DIX in their | |||
160 | * correct chronological order. Only reads from the system pointer | |||
161 | * and keyboard. | |||
162 | */ | |||
163 | void | |||
164 | ProcessInputEvents(void) | |||
165 | { | |||
166 | int x, y; | |||
167 | ||||
168 | mieqProcessInputEvents(); | |||
169 | ||||
170 | /* FIXME: This is a problem if we have multiple pointers */ | |||
171 | miPointerGetPosition(inputInfo.pointer, &x, &y); | |||
172 | ||||
173 | xf86SetViewport(xf86Info.currentScreen, x, y); | |||
174 | } | |||
175 | ||||
176 | /* | |||
177 | * Handle keyboard events that cause some kind of "action" | |||
178 | * (i.e., server termination, video mode changes, VT switches, etc.) | |||
179 | */ | |||
180 | void | |||
181 | xf86ProcessActionEvent(ActionEvent action, void *arg) | |||
182 | { | |||
183 | DebugF("ProcessActionEvent(%d,%p)\n", (int) action, arg); | |||
184 | switch (action) { | |||
185 | case ACTION_TERMINATE: | |||
186 | if (!xf86Info.dontZap) { | |||
187 | xf86Msg(X_INFO, "Server zapped. Shutting down.\n"); | |||
188 | #ifdef XFreeXDGA1 | |||
189 | DGAShutdown(); | |||
190 | #endif | |||
191 | GiveUp(0); | |||
192 | } | |||
193 | break; | |||
194 | case ACTION_NEXT_MODE: | |||
195 | if (!xf86Info.dontZoom) | |||
196 | xf86ZoomViewport(xf86Info.currentScreen, 1); | |||
197 | break; | |||
198 | case ACTION_PREV_MODE: | |||
199 | if (!xf86Info.dontZoom) | |||
200 | xf86ZoomViewport(xf86Info.currentScreen, -1); | |||
201 | break; | |||
202 | case ACTION_SWITCHSCREEN: | |||
203 | if (VTSwitchEnabled && !xf86Info.dontVTSwitch && arg) { | |||
204 | int vtno = *((int *) arg); | |||
205 | ||||
206 | if (vtno != xf86Info.vtno) { | |||
207 | if (!xf86VTActivate(vtno)) { | |||
208 | ErrorF("Failed to switch from vt%02d to vt%02d: %s\n", | |||
209 | xf86Info.vtno, vtno, strerror(errno(*__error()))); | |||
210 | } | |||
211 | } | |||
212 | } | |||
213 | break; | |||
214 | case ACTION_SWITCHSCREEN_NEXT: | |||
215 | if (VTSwitchEnabled && !xf86Info.dontVTSwitch) { | |||
216 | if (!xf86VTActivate(xf86Info.vtno + 1)) { | |||
217 | /* If first try failed, assume this is the last VT and | |||
218 | * try wrapping around to the first vt. | |||
219 | */ | |||
220 | if (!xf86VTActivate(1)) { | |||
221 | ErrorF("Failed to switch from vt%02d to next vt: %s\n", | |||
222 | xf86Info.vtno, strerror(errno(*__error()))); | |||
223 | } | |||
224 | } | |||
225 | } | |||
226 | break; | |||
227 | case ACTION_SWITCHSCREEN_PREV: | |||
228 | if (VTSwitchEnabled && !xf86Info.dontVTSwitch && xf86Info.vtno > 0) { | |||
229 | if (!xf86VTActivate(xf86Info.vtno - 1)) { | |||
230 | /* Don't know what the maximum VT is, so can't wrap around */ | |||
231 | ErrorF("Failed to switch from vt%02d to previous vt: %s\n", | |||
232 | xf86Info.vtno, strerror(errno(*__error()))); | |||
233 | } | |||
234 | } | |||
235 | break; | |||
236 | default: | |||
237 | break; | |||
238 | } | |||
239 | } | |||
240 | ||||
241 | /* | |||
242 | * xf86Wakeup -- | |||
243 | * Os wakeup handler. | |||
244 | */ | |||
245 | ||||
246 | /* ARGSUSED */ | |||
247 | void | |||
248 | xf86Wakeup(void *blockData, int err, void *pReadmask) | |||
249 | { | |||
250 | fd_set *LastSelectMask = (fd_set *) pReadmask; | |||
251 | fd_set devicesWithInput; | |||
252 | InputInfoPtr pInfo; | |||
253 | ||||
254 | if (err >= 0) { | |||
255 | ||||
256 | XFD_ANDSET(&devicesWithInput, LastSelectMask, &EnabledDevices){ int __i__; for (__i__ = 0; __i__ < ((((1024) % ((sizeof( __int32_t) * 8))) == 0) ? ((1024) / ((sizeof(__int32_t) * 8)) ) : (((1024) / ((sizeof(__int32_t) * 8))) + 1)); __i__++) ((( (&devicesWithInput))->fds_bits))[__i__] = ((((((LastSelectMask ))->fds_bits))[__i__]) & (((((&EnabledDevices))-> fds_bits))[__i__])); }; | |||
257 | if (XFD_ANYSET(&devicesWithInput)((((((1024) % ((sizeof(__int32_t) * 8))) == 0) ? ((1024) / (( sizeof(__int32_t) * 8))) : (((1024) / ((sizeof(__int32_t) * 8 ))) + 1)) > 0 && ((((&devicesWithInput)->fds_bits ))[0])) || (((((1024) % ((sizeof(__int32_t) * 8))) == 0) ? (( 1024) / ((sizeof(__int32_t) * 8))) : (((1024) / ((sizeof(__int32_t ) * 8))) + 1)) > 1 && ((((&devicesWithInput)-> fds_bits))[1])) || (((((1024) % ((sizeof(__int32_t) * 8))) == 0) ? ((1024) / ((sizeof(__int32_t) * 8))) : (((1024) / ((sizeof (__int32_t) * 8))) + 1)) > 2 && ((((&devicesWithInput )->fds_bits))[2])) || (((((1024) % ((sizeof(__int32_t) * 8 ))) == 0) ? ((1024) / ((sizeof(__int32_t) * 8))) : (((1024) / ((sizeof(__int32_t) * 8))) + 1)) > 3 && ((((& devicesWithInput)->fds_bits))[3])) || (((((1024) % ((sizeof (__int32_t) * 8))) == 0) ? ((1024) / ((sizeof(__int32_t) * 8) )) : (((1024) / ((sizeof(__int32_t) * 8))) + 1)) > 4 && ((((&devicesWithInput)->fds_bits))[4])) || (((((1024) % ((sizeof(__int32_t) * 8))) == 0) ? ((1024) / ((sizeof(__int32_t ) * 8))) : (((1024) / ((sizeof(__int32_t) * 8))) + 1)) > 5 && ((((&devicesWithInput)->fds_bits))[5])) || (((((1024) % ((sizeof(__int32_t) * 8))) == 0) ? ((1024) / (( sizeof(__int32_t) * 8))) : (((1024) / ((sizeof(__int32_t) * 8 ))) + 1)) > 6 && ((((&devicesWithInput)->fds_bits ))[6])) || (((((1024) % ((sizeof(__int32_t) * 8))) == 0) ? (( 1024) / ((sizeof(__int32_t) * 8))) : (((1024) / ((sizeof(__int32_t ) * 8))) + 1)) > 7 && ((((&devicesWithInput)-> fds_bits))[7])) || (((((1024) % ((sizeof(__int32_t) * 8))) == 0) ? ((1024) / ((sizeof(__int32_t) * 8))) : (((1024) / ((sizeof (__int32_t) * 8))) + 1)) > 8 && ((((&devicesWithInput )->fds_bits))[8])) || (((((1024) % ((sizeof(__int32_t) * 8 ))) == 0) ? ((1024) / ((sizeof(__int32_t) * 8))) : (((1024) / ((sizeof(__int32_t) * 8))) + 1)) > 9 && ((((& devicesWithInput)->fds_bits))[9])) || (((((1024) % ((sizeof (__int32_t) * 8))) == 0) ? ((1024) / ((sizeof(__int32_t) * 8) )) : (((1024) / ((sizeof(__int32_t) * 8))) + 1)) > 10 && ((((&devicesWithInput)->fds_bits))[10])) || (((((1024 ) % ((sizeof(__int32_t) * 8))) == 0) ? ((1024) / ((sizeof(__int32_t ) * 8))) : (((1024) / ((sizeof(__int32_t) * 8))) + 1)) > 11 && ((((&devicesWithInput)->fds_bits))[11])) || (((((1024) % ((sizeof(__int32_t) * 8))) == 0) ? ((1024) / (( sizeof(__int32_t) * 8))) : (((1024) / ((sizeof(__int32_t) * 8 ))) + 1)) > 12 && ((((&devicesWithInput)->fds_bits ))[12])) || (((((1024) % ((sizeof(__int32_t) * 8))) == 0) ? ( (1024) / ((sizeof(__int32_t) * 8))) : (((1024) / ((sizeof(__int32_t ) * 8))) + 1)) > 13 && ((((&devicesWithInput)-> fds_bits))[13])) || (((((1024) % ((sizeof(__int32_t) * 8))) == 0) ? ((1024) / ((sizeof(__int32_t) * 8))) : (((1024) / ((sizeof (__int32_t) * 8))) + 1)) > 14 && ((((&devicesWithInput )->fds_bits))[14])) || (((((1024) % ((sizeof(__int32_t) * 8 ))) == 0) ? ((1024) / ((sizeof(__int32_t) * 8))) : (((1024) / ((sizeof(__int32_t) * 8))) + 1)) > 15 && ((((& devicesWithInput)->fds_bits))[15])))) { | |||
258 | pInfo = xf86InputDevs; | |||
259 | while (pInfo) { | |||
260 | if (pInfo->read_input && pInfo->fd >= 0 && | |||
261 | (FD_ISSET(pInfo->fd, &devicesWithInput)__darwin_fd_isset((pInfo->fd), (&devicesWithInput)) != 0)) { | |||
262 | input_lock(); | |||
263 | ||||
264 | /* | |||
265 | * Remove the descriptior from the set because more than one | |||
266 | * device may share the same file descriptor. | |||
267 | */ | |||
268 | FD_CLR(pInfo->fd, &devicesWithInput)do { int __fd = (pInfo->fd); ((&devicesWithInput)-> fds_bits[(unsigned long)__fd/(sizeof(__int32_t) * 8)] &= ~ ((__int32_t)(1<<((unsigned long)__fd % (sizeof(__int32_t ) * 8))))); } while(0); | |||
269 | ||||
270 | pInfo->read_input(pInfo); | |||
271 | input_unlock(); | |||
272 | } | |||
273 | pInfo = pInfo->next; | |||
274 | } | |||
275 | } | |||
276 | } | |||
277 | ||||
278 | if (err >= 0) { /* we don't want the handlers called if select() */ | |||
279 | IHPtr ih, ih_tmp; /* returned with an error condition, do we? */ | |||
280 | ||||
281 | nt_list_for_each_entry_safe(ih, ih_tmp, InputHandlers, next)for (ih = InputHandlers, ih_tmp = (ih) ? (ih)->next : ((void *)0); ih; ih = ih_tmp, ih_tmp = (ih_tmp) ? (ih_tmp)->next: ((void*)0)) { | |||
282 | if (ih->enabled && ih->fd >= 0 && ih->ihproc && | |||
283 | (FD_ISSET(ih->fd, ((fd_set *) pReadmask))__darwin_fd_isset((ih->fd), (((fd_set *) pReadmask))) != 0)) { | |||
284 | ih->ihproc(ih->fd, ih->data); | |||
285 | } | |||
286 | } | |||
287 | } | |||
288 | ||||
289 | if (xf86VTSwitchPending()) | |||
290 | xf86VTSwitch(); | |||
291 | } | |||
292 | ||||
293 | /* | |||
294 | * xf86ReadInput -- | |||
295 | * input thread handler | |||
296 | */ | |||
297 | ||||
298 | static void | |||
299 | xf86ReadInput(int fd, int ready, void *closure) | |||
300 | { | |||
301 | InputInfoPtr pInfo = closure; | |||
302 | ||||
303 | pInfo->read_input(pInfo); | |||
304 | } | |||
305 | ||||
306 | /* | |||
307 | * xf86AddEnabledDevice -- | |||
308 | * | |||
309 | */ | |||
310 | void | |||
311 | xf86AddEnabledDevice(InputInfoPtr pInfo) | |||
312 | { | |||
313 | InputThreadRegisterDev(pInfo->fd, xf86ReadInput, pInfo); | |||
314 | } | |||
315 | ||||
316 | /* | |||
317 | * xf86RemoveEnabledDevice -- | |||
318 | * | |||
319 | */ | |||
320 | void | |||
321 | xf86RemoveEnabledDevice(InputInfoPtr pInfo) | |||
322 | { | |||
323 | InputThreadUnregisterDev(pInfo->fd); | |||
324 | } | |||
325 | ||||
326 | static int *xf86SignalIntercept = NULL((void*)0); | |||
327 | ||||
328 | void | |||
329 | xf86InterceptSignals(int *signo) | |||
330 | { | |||
331 | if ((xf86SignalIntercept = signo)) | |||
332 | *signo = -1; | |||
333 | } | |||
334 | ||||
335 | static void (*xf86SigIllHandler) (void) = NULL((void*)0); | |||
336 | ||||
337 | void | |||
338 | xf86InterceptSigIll(void (*sigillhandler) (void)) | |||
339 | { | |||
340 | xf86SigIllHandler = sigillhandler; | |||
341 | } | |||
342 | ||||
343 | /* | |||
344 | * xf86SigWrapper -- | |||
345 | * Catch unexpected signals and exit or continue cleanly. | |||
346 | */ | |||
347 | int | |||
348 | xf86SigWrapper(int signo) | |||
349 | { | |||
350 | if ((signo == SIGILL4) && xf86SigIllHandler) { | |||
351 | (*xf86SigIllHandler) (); | |||
352 | return 0; /* continue */ | |||
353 | } | |||
354 | ||||
355 | if (xf86SignalIntercept && (*xf86SignalIntercept < 0)) { | |||
356 | *xf86SignalIntercept = signo; | |||
357 | return 0; /* continue */ | |||
358 | } | |||
359 | ||||
360 | xf86Info.caughtSignal = TRUE1; | |||
361 | return 1; /* abort */ | |||
362 | } | |||
363 | ||||
364 | /* | |||
365 | * xf86PrintBacktrace -- | |||
366 | * Print a stack backtrace for debugging purposes. | |||
367 | */ | |||
368 | void | |||
369 | xf86PrintBacktrace(void) | |||
370 | { | |||
371 | xorg_backtrace(); | |||
372 | } | |||
373 | ||||
374 | static void | |||
375 | xf86ReleaseKeys(DeviceIntPtr pDev) | |||
376 | { | |||
377 | KeyClassPtr keyc; | |||
378 | int i; | |||
379 | ||||
380 | if (!pDev || !pDev->key) | |||
381 | return; | |||
382 | ||||
383 | keyc = pDev->key; | |||
384 | ||||
385 | /* | |||
386 | * Hmm... here is the biggest hack of every time ! | |||
387 | * It may be possible that a switch-vt procedure has finished BEFORE | |||
388 | * you released all keys neccessary to do this. That peculiar behavior | |||
389 | * can fool the X-server pretty much, cause it assumes that some keys | |||
390 | * were not released. TWM may stuck alsmost completly.... | |||
391 | * OK, what we are doing here is after returning from the vt-switch | |||
392 | * exeplicitely unrelease all keyboard keys before the input-devices | |||
393 | * are reenabled. | |||
394 | */ | |||
395 | ||||
396 | for (i = keyc->xkbInfo->desc->min_key_code; | |||
397 | i < keyc->xkbInfo->desc->max_key_code; i++) { | |||
398 | if (key_is_down(pDev, i, KEY_POSTED2)) { | |||
399 | input_lock(); | |||
400 | QueueKeyboardEvents(pDev, KeyRelease3, i); | |||
401 | input_unlock(); | |||
402 | } | |||
403 | } | |||
404 | } | |||
405 | ||||
406 | void | |||
407 | xf86DisableInputDeviceForVTSwitch(InputInfoPtr pInfo) | |||
408 | { | |||
409 | if (!pInfo->dev) | |||
410 | return; | |||
411 | ||||
412 | if (!pInfo->dev->enabled) | |||
413 | pInfo->flags |= XI86_DEVICE_DISABLED0x10; | |||
414 | ||||
415 | xf86ReleaseKeys(pInfo->dev); | |||
416 | ProcessInputEvents(); | |||
417 | DisableDevice(pInfo->dev, TRUE1); | |||
418 | } | |||
419 | ||||
420 | void | |||
421 | xf86EnableInputDeviceForVTSwitch(InputInfoPtr pInfo) | |||
422 | { | |||
423 | if (pInfo->dev && (pInfo->flags & XI86_DEVICE_DISABLED0x10) == 0) | |||
424 | EnableDevice(pInfo->dev, TRUE1); | |||
425 | pInfo->flags &= ~XI86_DEVICE_DISABLED0x10; | |||
426 | } | |||
427 | ||||
428 | /* | |||
429 | * xf86UpdateHasVTProperty -- | |||
430 | * Update a flag property on the root window to say whether the server VT | |||
431 | * is currently the active one as some clients need to know this. | |||
432 | */ | |||
433 | static void | |||
434 | xf86UpdateHasVTProperty(Bool hasVT) | |||
435 | { | |||
436 | Atom property_name; | |||
437 | int32_t value = hasVT ? 1 : 0; | |||
438 | int i; | |||
439 | ||||
440 | property_name = MakeAtom(HAS_VT_ATOM_NAME"XFree86_has_VT", sizeof(HAS_VT_ATOM_NAME"XFree86_has_VT") - 1, | |||
441 | FALSE0); | |||
442 | if (property_name == BAD_RESOURCE0xe0000000) | |||
443 | FatalError("Failed to retrieve \"HAS_VT\" atom\n"); | |||
444 | for (i = 0; i < xf86NumScreens; i++) { | |||
445 | dixChangeWindowProperty(serverClient, | |||
446 | xf86ScrnToScreen(xf86Screens[i])->root, | |||
447 | property_name, XA_INTEGER((Atom) 19), 32, | |||
448 | PropModeReplace0, 1, &value, TRUE1); | |||
449 | } | |||
450 | } | |||
451 | ||||
452 | void | |||
453 | xf86VTLeave(void) | |||
454 | { | |||
455 | int i; | |||
456 | InputInfoPtr pInfo; | |||
457 | IHPtr ih; | |||
458 | ||||
459 | DebugF("xf86VTSwitch: Leaving, xf86Exiting is %s\n", | |||
460 | BOOLTOSTRING((dispatchException & DE_TERMINATE) ? TRUE : FALSE)); | |||
461 | #ifdef DPMSExtension1 | |||
462 | if (DPMSPowerLevel != DPMSModeOn0) | |||
463 | DPMSSet(serverClient, DPMSModeOn0); | |||
464 | #endif | |||
465 | for (i = 0; i < xf86NumScreens; i++) { | |||
466 | if (!(dispatchException & DE_TERMINATE2)) | |||
467 | if (xf86Screens[i]->EnableDisableFBAccess) | |||
468 | (*xf86Screens[i]->EnableDisableFBAccess) (xf86Screens[i], FALSE0); | |||
469 | } | |||
470 | ||||
471 | /* | |||
472 | * Keep the order: Disable Device > LeaveVT | |||
473 | * EnterVT > EnableDevice | |||
474 | */ | |||
475 | for (ih = InputHandlers; ih; ih = ih->next) { | |||
476 | if (ih->is_input) | |||
477 | xf86DisableInputHandler(ih); | |||
478 | else | |||
479 | xf86DisableGeneralHandler(ih); | |||
480 | } | |||
481 | for (pInfo = xf86InputDevs; pInfo; pInfo = pInfo->next) | |||
482 | xf86DisableInputDeviceForVTSwitch(pInfo); | |||
483 | ||||
484 | input_lock(); | |||
485 | for (i = 0; i < xf86NumScreens; i++) | |||
486 | xf86Screens[i]->LeaveVT(xf86Screens[i]); | |||
487 | for (i = 0; i < xf86NumGPUScreens; i++) | |||
488 | xf86GPUScreens[i]->LeaveVT(xf86GPUScreens[i]); | |||
489 | ||||
490 | xf86AccessLeave(); /* We need this here, otherwise */ | |||
491 | ||||
492 | if (!xf86VTSwitchAway()) | |||
493 | goto switch_failed; | |||
494 | ||||
495 | #ifdef XF86PM | |||
496 | if (xf86OSPMClose) | |||
497 | xf86OSPMClose(); | |||
498 | xf86OSPMClose = NULL((void*)0); | |||
499 | #endif | |||
500 | ||||
501 | for (i = 0; i < xf86NumScreens; i++) { | |||
502 | /* | |||
503 | * zero all access functions to | |||
504 | * trap calls when switched away. | |||
505 | */ | |||
506 | xf86Screens[i]->vtSema = FALSE0; | |||
507 | } | |||
508 | if (xorgHWAccess) | |||
509 | xf86DisableIO(); | |||
510 | ||||
511 | xf86UpdateHasVTProperty(FALSE0); | |||
512 | ||||
513 | return; | |||
514 | ||||
515 | switch_failed: | |||
516 | DebugF("xf86VTSwitch: Leave failed\n"); | |||
517 | xf86AccessEnter(); | |||
518 | for (i = 0; i < xf86NumScreens; i++) { | |||
519 | if (!xf86Screens[i]->EnterVT(xf86Screens[i])) | |||
520 | FatalError("EnterVT failed for screen %d\n", i); | |||
521 | } | |||
522 | for (i = 0; i < xf86NumGPUScreens; i++) { | |||
523 | if (!xf86GPUScreens[i]->EnterVT(xf86GPUScreens[i])) | |||
524 | FatalError("EnterVT failed for gpu screen %d\n", i); | |||
525 | } | |||
526 | if (!(dispatchException & DE_TERMINATE2)) { | |||
527 | for (i = 0; i < xf86NumScreens; i++) { | |||
528 | if (xf86Screens[i]->EnableDisableFBAccess) | |||
529 | (*xf86Screens[i]->EnableDisableFBAccess) (xf86Screens[i], TRUE1); | |||
530 | } | |||
531 | } | |||
532 | dixSaveScreens(serverClient, SCREEN_SAVER_FORCER2, ScreenSaverReset0); | |||
533 | ||||
534 | for (pInfo = xf86InputDevs; pInfo; pInfo = pInfo->next) | |||
535 | xf86EnableInputDeviceForVTSwitch(pInfo); | |||
536 | for (ih = InputHandlers; ih; ih = ih->next) { | |||
537 | if (ih->is_input) | |||
538 | xf86EnableInputHandler(ih); | |||
539 | else | |||
540 | xf86EnableGeneralHandler(ih); | |||
541 | } | |||
542 | input_unlock(); | |||
543 | } | |||
544 | ||||
545 | void | |||
546 | xf86VTEnter(void) | |||
547 | { | |||
548 | int i; | |||
549 | InputInfoPtr pInfo; | |||
550 | IHPtr ih; | |||
551 | ||||
552 | DebugF("xf86VTSwitch: Entering\n"); | |||
553 | if (!xf86VTSwitchTo()) | |||
554 | return; | |||
555 | ||||
556 | #ifdef XF86PM | |||
557 | xf86OSPMClose = xf86OSPMOpen(); | |||
558 | #endif | |||
559 | ||||
560 | if (xorgHWAccess) | |||
561 | xf86EnableIO(); | |||
562 | xf86AccessEnter(); | |||
563 | for (i = 0; i < xf86NumScreens; i++) { | |||
564 | xf86Screens[i]->vtSema = TRUE1; | |||
565 | if (!xf86Screens[i]->EnterVT(xf86Screens[i])) | |||
566 | FatalError("EnterVT failed for screen %d\n", i); | |||
567 | } | |||
568 | for (i = 0; i < xf86NumGPUScreens; i++) { | |||
569 | xf86GPUScreens[i]->vtSema = TRUE1; | |||
570 | if (!xf86GPUScreens[i]->EnterVT(xf86GPUScreens[i])) | |||
571 | FatalError("EnterVT failed for gpu screen %d\n", i); | |||
572 | } | |||
573 | for (i = 0; i < xf86NumScreens; i++) { | |||
574 | if (xf86Screens[i]->EnableDisableFBAccess) | |||
575 | (*xf86Screens[i]->EnableDisableFBAccess) (xf86Screens[i], TRUE1); | |||
576 | } | |||
577 | ||||
578 | /* Turn screen saver off when switching back */ | |||
579 | dixSaveScreens(serverClient, SCREEN_SAVER_FORCER2, ScreenSaverReset0); | |||
580 | ||||
581 | for (pInfo = xf86InputDevs; pInfo; pInfo = pInfo->next) { | |||
582 | /* Devices with server managed fds get enabled on logind resume */ | |||
583 | if (!(pInfo->flags & XI86_SERVER_FD0x20)) | |||
584 | xf86EnableInputDeviceForVTSwitch(pInfo); | |||
585 | } | |||
586 | ||||
587 | for (ih = InputHandlers; ih; ih = ih->next) { | |||
588 | if (ih->is_input) | |||
589 | xf86EnableInputHandler(ih); | |||
590 | else | |||
591 | xf86EnableGeneralHandler(ih); | |||
592 | } | |||
593 | #ifdef XSERVER_PLATFORM_BUS | |||
594 | /* check for any new output devices */ | |||
595 | xf86platformVTProbe(); | |||
596 | #endif | |||
597 | ||||
598 | xf86UpdateHasVTProperty(TRUE1); | |||
599 | ||||
600 | input_unlock(); | |||
601 | } | |||
602 | ||||
603 | /* | |||
604 | * xf86VTSwitch -- | |||
605 | * Handle requests for switching the vt. | |||
606 | */ | |||
607 | static void | |||
608 | xf86VTSwitch(void) | |||
609 | { | |||
610 | DebugF("xf86VTSwitch()\n"); | |||
611 | ||||
612 | #ifdef XFreeXDGA1 | |||
613 | if (!DGAVTSwitch()) | |||
614 | return; | |||
615 | #endif | |||
616 | ||||
617 | /* | |||
618 | * Since all screens are currently all in the same state it is sufficient | |||
619 | * check the first. This might change in future. | |||
620 | * | |||
621 | * VTLeave is always handled here (VT_PROCESS guarantees this is safe), | |||
622 | * if we use systemd_logind xf86VTEnter() gets called by systemd-logind.c | |||
623 | * once it has resumed all drm nodes. | |||
624 | */ | |||
625 | if (xf86VTOwner()) | |||
626 | xf86VTLeave(); | |||
627 | else if (!systemd_logind_controls_session()0) | |||
628 | xf86VTEnter(); | |||
629 | } | |||
630 | ||||
631 | /* Input handler registration */ | |||
632 | ||||
633 | static void * | |||
634 | addInputHandler(int fd, InputHandlerProc proc, void *data) | |||
635 | { | |||
636 | IHPtr ih; | |||
637 | ||||
638 | if (fd < 0 || !proc) | |||
639 | return NULL((void*)0); | |||
640 | ||||
641 | ih = calloc(sizeof(*ih), 1); | |||
642 | if (!ih) | |||
643 | return NULL((void*)0); | |||
644 | ||||
645 | ih->fd = fd; | |||
646 | ih->ihproc = proc; | |||
647 | ih->data = data; | |||
648 | ih->enabled = TRUE1; | |||
649 | ||||
650 | ih->next = InputHandlers; | |||
651 | InputHandlers = ih; | |||
652 | ||||
653 | return ih; | |||
654 | } | |||
655 | ||||
656 | void * | |||
657 | xf86AddInputHandler(int fd, InputHandlerProc proc, void *data) | |||
658 | { | |||
659 | IHPtr ih = addInputHandler(fd, proc, data); | |||
660 | ||||
661 | if (ih) { | |||
662 | AddEnabledDevice(fd); | |||
663 | ih->is_input = TRUE1; | |||
664 | } | |||
665 | return ih; | |||
666 | } | |||
667 | ||||
668 | void * | |||
669 | xf86AddGeneralHandler(int fd, InputHandlerProc proc, void *data) | |||
670 | { | |||
671 | IHPtr ih = addInputHandler(fd, proc, data); | |||
672 | ||||
673 | if (ih) | |||
674 | AddGeneralSocket(fd); | |||
675 | return ih; | |||
676 | } | |||
677 | ||||
678 | /** | |||
679 | * Set the handler for the console's fd. Replaces (and returns) the previous | |||
680 | * handler or NULL, whichever appropriate. | |||
681 | * proc may be NULL if the server should not handle events on the console. | |||
682 | */ | |||
683 | InputHandlerProc | |||
684 | xf86SetConsoleHandler(InputHandlerProc proc, void *data) | |||
685 | { | |||
686 | static IHPtr handler = NULL((void*)0); | |||
687 | InputHandlerProc old_proc = NULL((void*)0); | |||
688 | ||||
689 | if (handler) { | |||
690 | old_proc = handler->ihproc; | |||
691 | xf86RemoveGeneralHandler(handler); | |||
692 | } | |||
693 | ||||
694 | handler = xf86AddGeneralHandler(xf86Info.consoleFd, proc, data); | |||
695 | ||||
696 | return old_proc; | |||
697 | } | |||
698 | ||||
699 | static void | |||
700 | removeInputHandler(IHPtr ih) | |||
701 | { | |||
702 | IHPtr p; | |||
703 | ||||
704 | if (ih == InputHandlers) | |||
705 | InputHandlers = ih->next; | |||
706 | else { | |||
707 | p = InputHandlers; | |||
708 | while (p && p->next != ih) | |||
709 | p = p->next; | |||
710 | if (ih) | |||
711 | p->next = ih->next; | |||
| ||||
712 | } | |||
713 | free(ih); | |||
714 | } | |||
715 | ||||
716 | int | |||
717 | xf86RemoveInputHandler(void *handler) | |||
718 | { | |||
719 | IHPtr ih; | |||
720 | int fd; | |||
721 | ||||
722 | if (!handler) | |||
723 | return -1; | |||
724 | ||||
725 | ih = handler; | |||
726 | fd = ih->fd; | |||
727 | ||||
728 | if (ih->fd >= 0) | |||
729 | RemoveEnabledDevice(ih->fd); | |||
730 | removeInputHandler(ih); | |||
731 | ||||
732 | return fd; | |||
733 | } | |||
734 | ||||
735 | int | |||
736 | xf86RemoveGeneralHandler(void *handler) | |||
737 | { | |||
738 | IHPtr ih; | |||
739 | int fd; | |||
740 | ||||
741 | if (!handler) | |||
| ||||
742 | return -1; | |||
743 | ||||
744 | ih = handler; | |||
745 | fd = ih->fd; | |||
746 | ||||
747 | if (ih->fd >= 0) | |||
748 | RemoveGeneralSocket(ih->fd); | |||
749 | removeInputHandler(ih); | |||
750 | ||||
751 | return fd; | |||
752 | } | |||
753 | ||||
754 | void | |||
755 | xf86DisableInputHandler(void *handler) | |||
756 | { | |||
757 | IHPtr ih; | |||
758 | ||||
759 | if (!handler) | |||
760 | return; | |||
761 | ||||
762 | ih = handler; | |||
763 | ih->enabled = FALSE0; | |||
764 | if (ih->fd >= 0) | |||
765 | RemoveEnabledDevice(ih->fd); | |||
766 | } | |||
767 | ||||
768 | void | |||
769 | xf86DisableGeneralHandler(void *handler) | |||
770 | { | |||
771 | IHPtr ih; | |||
772 | ||||
773 | if (!handler) | |||
774 | return; | |||
775 | ||||
776 | ih = handler; | |||
777 | ih->enabled = FALSE0; | |||
778 | if (ih->fd >= 0) | |||
779 | RemoveGeneralSocket(ih->fd); | |||
780 | } | |||
781 | ||||
782 | void | |||
783 | xf86EnableInputHandler(void *handler) | |||
784 | { | |||
785 | IHPtr ih; | |||
786 | ||||
787 | if (!handler) | |||
788 | return; | |||
789 | ||||
790 | ih = handler; | |||
791 | ih->enabled = TRUE1; | |||
792 | if (ih->fd >= 0) | |||
793 | AddEnabledDevice(ih->fd); | |||
794 | } | |||
795 | ||||
796 | void | |||
797 | xf86EnableGeneralHandler(void *handler) | |||
798 | { | |||
799 | IHPtr ih; | |||
800 | ||||
801 | if (!handler) | |||
802 | return; | |||
803 | ||||
804 | ih = handler; | |||
805 | ih->enabled = TRUE1; | |||
806 | if (ih->fd >= 0) | |||
807 | AddGeneralSocket(ih->fd); | |||
808 | } | |||
809 | ||||
810 | /* | |||
811 | * As used currently by the DRI, the return value is ignored. | |||
812 | */ | |||
813 | Bool | |||
814 | xf86EnableVTSwitch(Bool new) | |||
815 | { | |||
816 | static Bool def = TRUE1; | |||
817 | Bool old; | |||
818 | ||||
819 | old = VTSwitchEnabled; | |||
820 | if (!new) { | |||
821 | /* Disable VT switching */ | |||
822 | def = VTSwitchEnabled; | |||
823 | VTSwitchEnabled = FALSE0; | |||
824 | } | |||
825 | else { | |||
826 | /* Restore VT switching to default */ | |||
827 | VTSwitchEnabled = def; | |||
828 | } | |||
829 | return old; | |||
830 | } | |||
831 | ||||
832 | void | |||
833 | DDXRingBell(int volume, int pitch, int duration) | |||
834 | { | |||
835 | xf86OSRingBell(volume, pitch, duration); | |||
836 | } | |||
837 | ||||
838 | Bool | |||
839 | xf86VTOwner(void) | |||
840 | { | |||
841 | /* at system startup xf86Screens[0] won't be set - but we will own the VT */ | |||
842 | if (xf86NumScreens == 0) | |||
843 | return TRUE1; | |||
844 | return xf86Screens[0]->vtSema; | |||
845 | } |