| 1 | /* |
| 2 | * Copyright 2001-2004 Red Hat Inc., Durham, North Carolina. |
| 3 | * |
| 4 | * All Rights Reserved. |
| 5 | * |
| 6 | * Permission is hereby granted, free of charge, to any person obtaining |
| 7 | * a copy of this software and associated documentation files (the |
| 8 | * "Software"), to deal in the Software without restriction, including |
| 9 | * without limitation on the rights to use, copy, modify, merge, |
| 10 | * publish, distribute, sublicense, and/or sell copies of the Software, |
| 11 | * and to permit persons to whom the Software is furnished to do so, |
| 12 | * subject to the following conditions: |
| 13 | * |
| 14 | * The above copyright notice and this permission notice (including the |
| 15 | * next paragraph) shall be included in all copies or substantial |
| 16 | * portions of the Software. |
| 17 | * |
| 18 | * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, |
| 19 | * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF |
| 20 | * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND |
| 21 | * NON-INFRINGEMENT. IN NO EVENT SHALL RED HAT AND/OR THEIR SUPPLIERS |
| 22 | * BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN |
| 23 | * ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN |
| 24 | * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE |
| 25 | * SOFTWARE. |
| 26 | */ |
| 27 | |
| 28 | /* |
| 29 | * Authors: |
| 30 | * Kevin E. Martin <kem@redhat.com> |
| 31 | * |
| 32 | */ |
| 33 | |
| 34 | /** \file |
| 35 | * This file provides support for fonts. */ |
| 36 | |
| 37 | #ifdef HAVE_DMX_CONFIG_H |
| 38 | #include <dmx-config.h> |
| 39 | #endif |
| 40 | |
| 41 | #define DMX_FONTPATH_DEBUG 0 |
| 42 | |
| 43 | #include "dmx.h" |
| 44 | #include "dmxsync.h" |
| 45 | #include "dmxfont.h" |
| 46 | #include "dmxlog.h" |
| 47 | |
| 48 | #include <X11/fonts/fontstruct.h> |
| 49 | #include "dixfont.h" |
| 50 | #include "dixstruct.h" |
| 51 | |
| 52 | static int (*dmxSaveProcVector[256]) (ClientPtr); |
| 53 | static int dmxFontLastError; |
| 54 | |
| 55 | static int |
| 56 | dmxFontErrorHandler(Display * dpy, XErrorEvent * ev) |
| 57 | { |
| 58 | dmxFontLastError = ev->error_code; |
| 59 | |
| 60 | return 0; |
| 61 | } |
| 62 | |
| 63 | static char ** |
| 64 | dmxGetFontPath(int *npaths) |
| 65 | { |
| 66 | char **fp; |
| 67 | unsigned char *c, *paths; |
| 68 | char *newfp; |
| 69 | int len, l, i; |
| 70 | |
| 71 | GetFontPath(serverClient, npaths, &len, &paths); |
| 72 | |
| 73 | newfp = malloc(*npaths + len); |
| 74 | c = (unsigned char *) newfp; |
| 75 | fp = malloc(*npaths * sizeof(*fp)); |
| 76 | |
| 77 | memmove(newfp, paths + 1, *npaths + len - 1); |
| 78 | l = *paths; |
| 79 | for (i = 0; i < *npaths; i++) { |
| 80 | fp[i] = (char *) c; |
| 81 | c += l; |
| 82 | l = *c; |
| 83 | *c++ = '\0'; |
| 84 | } |
| 85 | |
| 86 | #if DMX_FONTPATH_DEBUG |
| 87 | for (i = 0; i < *npaths; i++) |
| 88 | dmxLog(dmxDebug, "FontPath[%d] = %s\n", i, fp[i]); |
| 89 | #endif |
| 90 | |
| 91 | return fp; |
| 92 | } |
| 93 | |
| 94 | static void |
| 95 | dmxFreeFontPath(char **fp) |
| 96 | { |
| 97 | free(fp[0]); |
| 98 | free(fp); |
| 99 | } |
| 100 | |
| 101 | static Bool |
| 102 | dmxCheckFontPathElement(DMXScreenInfo * dmxScreen, char *fp) |
| 103 | { |
| 104 | int (*oldErrorHandler) (Display *, XErrorEvent *); |
| 105 | |
| 106 | if (!dmxScreen->beDisplay) |
| 107 | return TRUE; |
| 108 | |
| 109 | dmxFontLastError = 0; |
| 110 | oldErrorHandler = XSetErrorHandler(dmxFontErrorHandler); |
| 111 | XSetFontPath(dmxScreen->beDisplay, &fp, 1); |
| 112 | dmxSync(dmxScreen, TRUE); /* Must complete before removing handler */ |
| 113 | XSetErrorHandler(oldErrorHandler); |
| 114 | |
| 115 | return dmxFontLastError == 0; |
| 116 | } |
| 117 | |
| 118 | static int |
| 119 | dmxSetFontPath(DMXScreenInfo * dmxScreen) |
| 120 | { |
| 121 | int (*oldErrorHandler) (Display *, XErrorEvent *); |
| 122 | char **fp; |
| 123 | int result = Success; |
| 124 | int npaths; |
| 125 | |
| 126 | if (!dmxScreen->beDisplay) |
| 127 | return result; |
| 128 | |
| 129 | fp = dmxGetFontPath(&npaths); |
| 130 | if (!fp) |
| 131 | return BadAlloc; |
| 132 | |
| 133 | dmxFontLastError = 0; |
| 134 | oldErrorHandler = XSetErrorHandler(dmxFontErrorHandler); |
| 135 | XSetFontPath(dmxScreen->beDisplay, fp, npaths); |
| 136 | dmxSync(dmxScreen, TRUE); /* Must complete before removing handler */ |
| 137 | XSetErrorHandler(oldErrorHandler); |
| 138 | |
| 139 | if (dmxFontLastError) { |
| 140 | result = dmxFontLastError; |
| 141 | /* We could set *error here to the offending path, but it is |
| 142 | * ignored, so we don't bother figuring out which path is bad. |
| 143 | * If we do add this support in the future, we'll need to add |
| 144 | * error to the function's argument list. |
| 145 | */ |
| 146 | } |
| 147 | |
| 148 | dmxFreeFontPath(fp); |
| 149 | |
| 150 | return result; |
| 151 | } |
| 152 | |
| 153 | static int |
| 154 | dmxCheckFontPath(DMXScreenInfo * dmxScreen, int *error) |
| 155 | { |
| 156 | char **oldFontPath; |
| 157 | int nOldPaths; |
| 158 | int result = Success; |
| 159 | |
| 160 | if (!dmxScreen->beDisplay) |
| 161 | return result; |
| 162 | |
| 163 | /* Save old font path */ |
| 164 | oldFontPath = XGetFontPath(dmxScreen->beDisplay, &nOldPaths); |
| 165 | |
| 166 | result = dmxSetFontPath(dmxScreen); |
| 167 | |
| 168 | /* Restore old font path */ |
| 169 | XSetFontPath(dmxScreen->beDisplay, oldFontPath, nOldPaths); |
| 170 | XFreeFontPath(oldFontPath); |
| 171 | dmxSync(dmxScreen, FALSE); |
| 172 | |
| 173 | return result; |
| 174 | } |
| 175 | |
| 176 | static int |
| 177 | dmxProcSetFontPath(ClientPtr client) |
| 178 | { |
| 179 | unsigned char *ptr; |
| 180 | unsigned long nbytes, total, n; |
| 181 | long nfonts; |
| 182 | int i, result; |
| 183 | unsigned char *oldFontPath, *tmpFontPath; |
| 184 | int nOldPaths; |
| 185 | int lenOldPaths; |
| 186 | |
| 187 | REQUEST(xSetFontPathReq); |
| 188 | |
| 189 | REQUEST_AT_LEAST_SIZE(xSetFontPathReq); |
| 190 | |
| 191 | nbytes = (client->req_len << 2) - sizeof(xSetFontPathReq); |
| 192 | total = nbytes; |
| 193 | ptr = (unsigned char *) &stuff[1]; |
| 194 | nfonts = stuff->nFonts; |
| 195 | |
| 196 | while (--nfonts >= 0) { |
| 197 | if ((total == 0) || (total < (n = (*ptr + 1)))) |
| 198 | return BadLength; |
| 199 | total -= n; |
| 200 | ptr += n; |
| 201 | } |
| 202 | if (total >= 4) |
| 203 | return BadLength; |
| 204 | |
| 205 | GetFontPath(serverClient, &nOldPaths, &lenOldPaths, &tmpFontPath); |
| 206 | oldFontPath = malloc(nOldPaths + lenOldPaths); |
| 207 | memmove(oldFontPath, tmpFontPath, nOldPaths + lenOldPaths); |
| 208 | |
| 209 | result = SetFontPath(client, stuff->nFonts, (unsigned char *) &stuff[1]); |
| 210 | if (!result) { |
| 211 | int error = 0; |
| 212 | |
| 213 | for (i = 0; i < dmxNumScreens; i++) |
| 214 | if ((result = dmxCheckFontPath(&dmxScreens[i], &error))) |
| 215 | break; |
| 216 | |
| 217 | if (result) { |
| 218 | /* Restore old fontpath in the DMX server */ |
| 219 | SetFontPath(client, nOldPaths, oldFontPath); |
| 220 | client->errorValue = error; |
| 221 | } |
| 222 | } |
| 223 | |
| 224 | free(oldFontPath); |
| 225 | return result; |
| 226 | } |
| 227 | |
| 228 | /** Initialize font support. In addition to the screen function call |
| 229 | * pointers, DMX also hooks in at the ProcVector[] level. Here the old |
| 230 | * ProcVector function pointers are saved and the new ProcVector |
| 231 | * function pointers are initialized. */ |
| 232 | void |
| 233 | dmxInitFonts(void) |
| 234 | { |
| 235 | int i; |
| 236 | |
| 237 | for (i = 0; i < 256; i++) |
| 238 | dmxSaveProcVector[i] = ProcVector[i]; |
| 239 | |
| 240 | ProcVector[X_SetFontPath] = dmxProcSetFontPath; |
| 241 | } |
| 242 | |
| 243 | /** Reset font support by restoring the original ProcVector function |
| 244 | * pointers. */ |
| 245 | void |
| 246 | dmxResetFonts(void) |
| 247 | { |
| 248 | int i; |
| 249 | |
| 250 | for (i = 0; i < 256; i++) |
| 251 | ProcVector[i] = dmxSaveProcVector[i]; |
| 252 | } |
| 253 | |
| 254 | /** Load the font, \a pFont, on the back-end server associated with \a |
| 255 | * pScreen. When a font is loaded, the font path on back-end server is |
| 256 | * first initialized to that specified on the command line with the |
| 257 | * -fontpath options, and then the font is loaded. */ |
| 258 | Bool |
| 259 | dmxBELoadFont(ScreenPtr pScreen, FontPtr pFont) |
| 260 | { |
| 261 | DMXScreenInfo *dmxScreen = &dmxScreens[pScreen->myNum]; |
| 262 | dmxFontPrivPtr pFontPriv = FontGetPrivate(pFont, dmxFontPrivateIndex); |
| 263 | const char *name; |
| 264 | char **oldFontPath = NULL; |
| 265 | int nOldPaths; |
| 266 | Atom name_atom, value_atom; |
| 267 | int i; |
| 268 | |
| 269 | /* Make sure we have a font private struct to work with */ |
| 270 | if (!pFontPriv) |
| 271 | return FALSE; |
| 272 | |
| 273 | /* Don't load a font over top of itself */ |
| 274 | if (pFontPriv->font[pScreen->myNum]) { |
| 275 | return TRUE; /* Already loaded font */ |
| 276 | } |
| 277 | |
| 278 | /* Save old font path */ |
| 279 | oldFontPath = XGetFontPath(dmxScreen->beDisplay, &nOldPaths); |
| 280 | |
| 281 | /* Set the font path for the font about to be loaded on the back-end */ |
| 282 | if (dmxSetFontPath(dmxScreen)) { |
| 283 | char **fp; |
| 284 | int npaths; |
| 285 | Bool *goodfps; |
| 286 | |
| 287 | /* This could fail only when first starting the X server and |
| 288 | * loading the default font. If it fails here, then the default |
| 289 | * font path is invalid, no default font path will be set, the |
| 290 | * DMX server will fail to load the default font, and it will |
| 291 | * exit with an error unless we remove the offending font paths |
| 292 | * with the -ignorebadfontpaths command line option. |
| 293 | */ |
| 294 | |
| 295 | fp = dmxGetFontPath(&npaths); |
| 296 | if (!fp) { |
| 297 | dmxLog(dmxError, "No default font path set.\n"); |
| 298 | dmxLog(dmxError, |
| 299 | "Please see the Xdmx man page for information on how to\n"); |
| 300 | dmxLog(dmxError, |
| 301 | "initialize the DMX server's default font path.\n"); |
| 302 | XFreeFontPath(oldFontPath); |
| 303 | return FALSE; |
| 304 | } |
| 305 | |
| 306 | if (!dmxFontPath) |
| 307 | dmxLog(dmxWarning, "No default font path is set.\n"); |
| 308 | |
| 309 | goodfps = malloc(npaths * sizeof(*goodfps)); |
| 310 | |
| 311 | dmxLog(dmxError, |
| 312 | "The DMX server failed to set the following font paths on " |
| 313 | "screen #%d:\n", pScreen->myNum); |
| 314 | |
| 315 | for (i = 0; i < npaths; i++) |
| 316 | if (!(goodfps[i] = dmxCheckFontPathElement(dmxScreen, fp[i]))) |
| 317 | dmxLog(dmxError, " %s\n", fp[i]); |
| 318 | |
| 319 | if (dmxIgnoreBadFontPaths) { |
| 320 | char *newfp; |
| 321 | int newnpaths = 0; |
| 322 | int len = 0; |
| 323 | int j = 0; |
| 324 | |
| 325 | dmxLog(dmxError, |
| 326 | "These font paths will not be used because the " |
| 327 | "\"-ignorebadfontpaths\"\n"); |
| 328 | dmxLog(dmxError, "option is set.\n"); |
| 329 | |
| 330 | for (i = 0; i < npaths; i++) |
| 331 | if (goodfps[i]) { |
| 332 | len += strlen(fp[i]) + 1; |
| 333 | newnpaths++; |
| 334 | } |
| 335 | |
| 336 | if (!newnpaths) { |
| 337 | /* No valid font paths were found */ |
| 338 | dmxLog(dmxError, |
| 339 | "After removing the font paths above, no valid font " |
| 340 | "paths were\n"); |
| 341 | dmxLog(dmxError, |
| 342 | "available. Please check that the font paths set on " |
| 343 | "the command\n"); |
| 344 | dmxLog(dmxError, |
| 345 | "line or in the configuration file via the " |
| 346 | "\"-fontpath\" option\n"); |
| 347 | dmxLog(dmxError, |
| 348 | "are valid on all back-end servers. See the Xdmx man " |
| 349 | "page for\n"); |
| 350 | dmxLog(dmxError, "more information on font paths.\n"); |
| 351 | dmxFreeFontPath(fp); |
| 352 | XFreeFontPath(oldFontPath); |
| 353 | free(goodfps); |
| 354 | return FALSE; |
| 355 | } |
| 356 | |
| 357 | newfp = malloc(len * sizeof(*newfp)); |
| 358 | for (i = 0; i < npaths; i++) { |
| 359 | if (goodfps[i]) { |
| 360 | int n = strlen(fp[i]); |
| 361 | |
| 362 | newfp[j++] = n; |
| 363 | strncpy(&newfp[j], fp[i], n); |
| 364 | j += n; |
| 365 | } |
| 366 | } |
| 367 | |
| 368 | if (SetFontPath(serverClient, newnpaths, (unsigned char *) newfp)) { |
| 369 | /* Note that this should never happen since all of the |
| 370 | * FPEs were previously valid. */ |
| 371 | dmxLog(dmxError, "Cannot reset the default font path.\n"); |
| 372 | } |
| 373 | } |
| 374 | else if (dmxFontPath) { |
| 375 | dmxLog(dmxError, |
| 376 | "Please remove these font paths from the command line " |
| 377 | "or\n"); |
| 378 | dmxLog(dmxError, |
| 379 | "configuration file, or set the \"-ignorebadfontpaths\" " |
| 380 | "option to\n"); |
| 381 | dmxLog(dmxError, |
| 382 | "ignore them. For more information on these options, see " |
| 383 | "the\n"); |
| 384 | dmxLog(dmxError, "Xdmx man page.\n"); |
| 385 | } |
| 386 | else { |
| 387 | dmxLog(dmxError, |
| 388 | "Please specify the font paths that are available on all " |
| 389 | "back-end\n"); |
| 390 | dmxLog(dmxError, |
| 391 | "servers with the \"-fontpath\" option, or use the " |
| 392 | "\"-ignorebadfontpaths\"\n"); |
| 393 | dmxLog(dmxError, |
| 394 | "to ignore bad defaults. For more information on " |
| 395 | "these and other\n"); |
| 396 | dmxLog(dmxError, |
| 397 | "font-path-related options, see the Xdmx man page.\n"); |
| 398 | } |
| 399 | |
| 400 | if (!dmxIgnoreBadFontPaths || |
| 401 | (dmxIgnoreBadFontPaths && dmxSetFontPath(dmxScreen))) { |
| 402 | /* We still have errors so return with error */ |
| 403 | dmxFreeFontPath(fp); |
| 404 | XFreeFontPath(oldFontPath); |
| 405 | free(goodfps); |
| 406 | return FALSE; |
| 407 | } |
| 408 | } |
| 409 | |
| 410 | /* Find requested font on back-end server */ |
| 411 | name_atom = MakeAtom("FONT", 4, TRUE); |
| 412 | value_atom = 0L; |
| 413 | |
| 414 | for (i = 0; i < pFont->info.nprops; i++) { |
| 415 | if ((Atom) pFont->info.props[i].name == name_atom) { |
| 416 | value_atom = pFont->info.props[i].value; |
| 417 | break; |
| 418 | } |
| 419 | } |
| 420 | if (!value_atom) |
| 421 | return FALSE; |
| 422 | |
| 423 | name = NameForAtom(value_atom); |
| 424 | if (!name) |
| 425 | return FALSE; |
| 426 | |
| 427 | pFontPriv->font[pScreen->myNum] = |
| 428 | XLoadQueryFont(dmxScreen->beDisplay, name); |
| 429 | |
| 430 | /* Restore old font path */ |
| 431 | XSetFontPath(dmxScreen->beDisplay, oldFontPath, nOldPaths); |
| 432 | XFreeFontPath(oldFontPath); |
| 433 | dmxSync(dmxScreen, FALSE); |
| 434 | |
| 435 | if (!pFontPriv->font[pScreen->myNum]) |
| 436 | return FALSE; |
| 437 | |
| 438 | return TRUE; |
| 439 | } |
| 440 | |
| 441 | /** Realize the font, \a pFont, on the back-end server associated with |
| 442 | * \a pScreen. */ |
| 443 | Bool |
| 444 | dmxRealizeFont(ScreenPtr pScreen, FontPtr pFont) |
| 445 | { |
| 446 | DMXScreenInfo *dmxScreen = &dmxScreens[pScreen->myNum]; |
| 447 | dmxFontPrivPtr pFontPriv; |
| 448 | |
| 449 | if (!(pFontPriv = FontGetPrivate(pFont, dmxFontPrivateIndex))) { |
| 450 | FontSetPrivate(pFont, dmxFontPrivateIndex, NULL); |
| 451 | pFontPriv = malloc(sizeof(dmxFontPrivRec)); |
| 452 | if (!pFontPriv) |
| 453 | return FALSE; |
| 454 | pFontPriv->font = NULL; |
| 455 | MAXSCREENSALLOC(pFontPriv->font); |
| 456 | if (!pFontPriv->font) { |
| 457 | free(pFontPriv); |
| 458 | return FALSE; |
| 459 | } |
| 460 | pFontPriv->refcnt = 0; |
| 461 | } |
| 462 | |
| 463 | FontSetPrivate(pFont, dmxFontPrivateIndex, (pointer) pFontPriv); |
| 464 | |
| 465 | if (dmxScreen->beDisplay) { |
| 466 | if (!dmxBELoadFont(pScreen, pFont)) |
| 467 | return FALSE; |
| 468 | |
| 469 | pFontPriv->refcnt++; |
| 470 | } |
| 471 | else { |
| 472 | pFontPriv->font[pScreen->myNum] = NULL; |
| 473 | } |
| 474 | |
| 475 | return TRUE; |
| 476 | } |
| 477 | |
| 478 | /** Free \a pFont on the back-end associated with \a pScreen. */ |
| 479 | Bool |
| 480 | dmxBEFreeFont(ScreenPtr pScreen, FontPtr pFont) |
| 481 | { |
| 482 | DMXScreenInfo *dmxScreen = &dmxScreens[pScreen->myNum]; |
| 483 | dmxFontPrivPtr pFontPriv = FontGetPrivate(pFont, dmxFontPrivateIndex); |
| 484 | |
| 485 | if (pFontPriv && pFontPriv->font[pScreen->myNum]) { |
| 486 | XFreeFont(dmxScreen->beDisplay, pFontPriv->font[pScreen->myNum]); |
| 487 | pFontPriv->font[pScreen->myNum] = NULL; |
| 488 | return TRUE; |
| 489 | } |
| 490 | |
| 491 | return FALSE; |
| 492 | } |
| 493 | |
| 494 | /** Unrealize the font, \a pFont, on the back-end server associated with |
| 495 | * \a pScreen. */ |
| 496 | Bool |
| 497 | dmxUnrealizeFont(ScreenPtr pScreen, FontPtr pFont) |
| 498 | { |
| 499 | DMXScreenInfo *dmxScreen = &dmxScreens[pScreen->myNum]; |
| 500 | dmxFontPrivPtr pFontPriv; |
| 501 | |
| 502 | if ((pFontPriv = FontGetPrivate(pFont, dmxFontPrivateIndex))) { |
| 503 | /* In case the font failed to load properly */ |
| 504 | if (!pFontPriv->refcnt) { |
| 505 | MAXSCREENSFREE(pFontPriv->font); |
| 506 | free(pFontPriv); |
| 507 | FontSetPrivate(pFont, dmxFontPrivateIndex, NULL); |
| 508 | } |
| 509 | else if (pFontPriv->font[pScreen->myNum]) { |
| 510 | if (dmxScreen->beDisplay) |
| 511 | dmxBEFreeFont(pScreen, pFont); |
| 512 | |
| 513 | /* The code below is non-obvious, so here's an explanation... |
| 514 | * |
| 515 | * When creating the default GC, the server opens up the |
| 516 | * default font once for each screen, which in turn calls |
| 517 | * the RealizeFont function pointer once for each screen. |
| 518 | * During this process both dix's font refcnt and DMX's font |
| 519 | * refcnt are incremented once for each screen. |
| 520 | * |
| 521 | * Later, when shutting down the X server, dix shuts down |
| 522 | * each screen in reverse order. During this shutdown |
| 523 | * procedure, each screen's default GC is freed and then |
| 524 | * that screen is closed by calling the CloseScreen function |
| 525 | * pointer. screenInfo.numScreens is then decremented after |
| 526 | * closing each screen. This procedure means that the dix's |
| 527 | * font refcnt for the font used by the default GC's is |
| 528 | * decremented once for each screen # greater than 0. |
| 529 | * However, since dix's refcnt for the default font is not |
| 530 | * yet 0 for each screen greater than 0, no call to the |
| 531 | * UnrealizeFont function pointer is made for those screens. |
| 532 | * Then, when screen 0 is being closed, dix's font refcnt |
| 533 | * for the default GC's font is finally 0 and the font is |
| 534 | * unrealized. However, since screenInfo.numScreens has |
| 535 | * been decremented already down to 1, only one call to |
| 536 | * UnrealizeFont is made (for screen 0). Thus, even though |
| 537 | * RealizeFont was called once for each screen, |
| 538 | * UnrealizeFont is only called for screen 0. |
| 539 | * |
| 540 | * This is a bug in dix. |
| 541 | * |
| 542 | * To avoid the memory leak of pFontPriv for each server |
| 543 | * generation, we can also free pFontPriv if the refcnt is |
| 544 | * not yet 0 but the # of screens is 1 -- i.e., the case |
| 545 | * described in the dix bug above. This is only a temporary |
| 546 | * workaround until the bug in dix is solved. |
| 547 | * |
| 548 | * The other problem is that the font structure allocated by |
| 549 | * XLoadQueryFont() above is not freed for screens > 0. |
| 550 | * This problem cannot be worked around here since the back- |
| 551 | * end displays for screens > 0 have already been closed by |
| 552 | * the time this code is called from dix. |
| 553 | * |
| 554 | * When the bug in dix described above is fixed, then we can |
| 555 | * remove the "|| screenInfo.numScreens == 1" code below and |
| 556 | * the memory leaks will be eliminated. |
| 557 | */ |
| 558 | if (--pFontPriv->refcnt == 0 |
| 559 | #if 1 |
| 560 | /* Remove this code when the dix bug is fixed */ |
| 561 | || screenInfo.numScreens == 1 |
| 562 | #endif |
| 563 | ) { |
| 564 | MAXSCREENSFREE(pFontPriv->font); |
| 565 | free(pFontPriv); |
| 566 | FontSetPrivate(pFont, dmxFontPrivateIndex, NULL); |
| 567 | } |
| 568 | } |
| 569 | } |
| 570 | |
| 571 | return TRUE; |
| 572 | } |