| 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 | } |