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Commit | Line | Data |
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24330d27 | 1 | /* |
4bd4418a | 2 | * $RCSId: xc/lib/fontconfig/src/fccache.c,v 1.12 2002/08/22 07:36:44 keithp Exp $ |
24330d27 | 3 | * |
46b51147 | 4 | * Copyright © 2000 Keith Packard |
24330d27 KP |
5 | * |
6 | * Permission to use, copy, modify, distribute, and sell this software and its | |
7 | * documentation for any purpose is hereby granted without fee, provided that | |
8 | * the above copyright notice appear in all copies and that both that | |
9 | * copyright notice and this permission notice appear in supporting | |
10 | * documentation, and that the name of Keith Packard not be used in | |
11 | * advertising or publicity pertaining to distribution of the software without | |
12 | * specific, written prior permission. Keith Packard makes no | |
13 | * representations about the suitability of this software for any purpose. It | |
14 | * is provided "as is" without express or implied warranty. | |
15 | * | |
16 | * KEITH PACKARD DISCLAIMS ALL WARRANTIES WITH REGARD TO THIS SOFTWARE, | |
17 | * INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS, IN NO | |
18 | * EVENT SHALL KEITH PACKARD BE LIABLE FOR ANY SPECIAL, INDIRECT OR | |
19 | * CONSEQUENTIAL DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM LOSS OF USE, | |
20 | * DATA OR PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER | |
21 | * TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR | |
22 | * PERFORMANCE OF THIS SOFTWARE. | |
23 | */ | |
24 | ||
212c9f43 | 25 | #include <fcntl.h> |
4262e0b3 | 26 | #include <dirent.h> |
212c9f43 PL |
27 | #include <sys/mman.h> |
28 | #include <sys/utsname.h> | |
24330d27 KP |
29 | #include "fcint.h" |
30 | ||
2dbe7597 PL |
31 | #define ENDIAN_TEST 0x12345678 |
32 | #define MACHINE_SIGNATURE_SIZE 9 + 5*19 + 1 | |
33 | ||
eb0cf671 PL |
34 | static off_t |
35 | FcCacheSkipToArch (int fd, const char * arch); | |
1b7be377 | 36 | |
eb0cf671 PL |
37 | static FcBool |
38 | FcCacheMoveDown (int fd, off_t start); | |
1b7be377 | 39 | |
eb0cf671 PL |
40 | static void * |
41 | FcDirCacheProduce (FcFontSet *set, FcCache * metadata); | |
1b7be377 PL |
42 | |
43 | static FcBool | |
eb0cf671 | 44 | FcDirCacheConsume (int fd, FcFontSet *set); |
1b7be377 PL |
45 | |
46 | static FcBool | |
eb0cf671 | 47 | FcDirCacheRead (FcFontSet * set, const FcChar8 *dir); |
1b7be377 | 48 | |
eb0cf671 PL |
49 | static int |
50 | FcCacheNextOffset(off_t w); | |
1b7be377 | 51 | |
eb0cf671 PL |
52 | static char * |
53 | FcCacheMachineSignature (void); | |
1b7be377 PL |
54 | |
55 | static FcBool | |
eb0cf671 | 56 | FcCacheHaveBank (int bank); |
1b7be377 | 57 | |
eb0cf671 | 58 | #define FC_DBG_CACHE_REF 1024 |
1b7be377 PL |
59 | |
60 | static FcChar8 * | |
eb0cf671 | 61 | FcCacheReadString (int fd, FcChar8 *dest, int len) |
24330d27 | 62 | { |
212c9f43 | 63 | FcChar8 c; |
ccb3e93b | 64 | FcBool escape; |
ccb3e93b KP |
65 | int size; |
66 | int i; | |
24330d27 | 67 | |
24330d27 KP |
68 | if (len == 0) |
69 | return FcFalse; | |
70 | ||
ccb3e93b KP |
71 | size = len; |
72 | i = 0; | |
24330d27 | 73 | escape = FcFalse; |
212c9f43 | 74 | while (read (fd, &c, 1) == 1) |
24330d27 KP |
75 | { |
76 | if (!escape) | |
77 | { | |
78 | switch (c) { | |
79 | case '"': | |
ccb3e93b KP |
80 | c = '\0'; |
81 | break; | |
24330d27 KP |
82 | case '\\': |
83 | escape = FcTrue; | |
84 | continue; | |
85 | } | |
86 | } | |
ccb3e93b KP |
87 | if (i == size) |
88 | { | |
212c9f43 PL |
89 | dest[i++] = 0; |
90 | return dest; | |
ccb3e93b | 91 | } |
212c9f43 | 92 | dest[i++] = c; |
ccb3e93b | 93 | if (c == '\0') |
212c9f43 | 94 | return dest; |
24330d27 KP |
95 | escape = FcFalse; |
96 | } | |
ccb3e93b | 97 | return 0; |
24330d27 KP |
98 | } |
99 | ||
100 | static FcBool | |
eb0cf671 | 101 | FcCacheWriteString (int fd, const FcChar8 *chars) |
327a7fd4 | 102 | { |
212c9f43 | 103 | if (write (fd, chars, strlen(chars)+1) != strlen(chars)+1) |
327a7fd4 | 104 | return FcFalse; |
327a7fd4 KP |
105 | return FcTrue; |
106 | } | |
107 | ||
eb0cf671 PL |
108 | static void |
109 | FcGlobalCacheDirDestroy (FcGlobalCacheDir *d) | |
1b7be377 | 110 | { |
eb0cf671 PL |
111 | FcGlobalCacheDir *dd, *next; |
112 | ||
113 | for (dd = d; dd; dd = next) | |
1b7be377 | 114 | { |
eb0cf671 PL |
115 | next = dd->next; |
116 | FcMemFree (FC_MEM_STRING, strlen (dd->name)+1); | |
117 | free (dd->name); | |
118 | FcMemFree (FC_MEM_CACHE, sizeof (FcGlobalCacheDir)); | |
119 | free (dd); | |
1b7be377 | 120 | } |
1b7be377 PL |
121 | } |
122 | ||
eb0cf671 PL |
123 | FcGlobalCache * |
124 | FcGlobalCacheCreate (void) | |
1b7be377 | 125 | { |
eb0cf671 | 126 | FcGlobalCache *cache; |
1b7be377 | 127 | |
eb0cf671 PL |
128 | cache = malloc (sizeof (FcGlobalCache)); |
129 | if (!cache) | |
130 | return 0; | |
131 | FcMemAlloc (FC_MEM_CACHE, sizeof (FcGlobalCache)); | |
132 | cache->dirs = 0; | |
133 | cache->updated = FcFalse; | |
134 | cache->fd = -1; | |
135 | return cache; | |
1b7be377 PL |
136 | } |
137 | ||
eb0cf671 PL |
138 | void |
139 | FcGlobalCacheDestroy (FcGlobalCache *cache) | |
327a7fd4 | 140 | { |
eb0cf671 | 141 | FcGlobalCacheDir *d, *next; |
327a7fd4 | 142 | |
eb0cf671 | 143 | for (d = cache->dirs; d; d = next) |
327a7fd4 | 144 | { |
eb0cf671 PL |
145 | next = d->next; |
146 | FcGlobalCacheDirDestroy (d); | |
327a7fd4 | 147 | } |
eb0cf671 PL |
148 | FcMemFree (FC_MEM_CACHE, sizeof (FcGlobalCache)); |
149 | free (cache); | |
327a7fd4 KP |
150 | } |
151 | ||
152 | void | |
eb0cf671 PL |
153 | FcGlobalCacheLoad (FcGlobalCache *cache, |
154 | const FcChar8 *cache_file) | |
327a7fd4 | 155 | { |
eb0cf671 PL |
156 | FcChar8 name_buf[8192]; |
157 | FcGlobalCacheDir *d, *next; | |
158 | char * current_arch_machine_name; | |
159 | char candidate_arch_machine_name[MACHINE_SIGNATURE_SIZE + 9]; | |
160 | off_t current_arch_start; | |
327a7fd4 | 161 | |
eb0cf671 PL |
162 | cache->fd = open ((char *) cache_file, O_RDONLY); |
163 | if (cache->fd == -1) | |
164 | return; | |
327a7fd4 | 165 | |
eb0cf671 | 166 | cache->updated = FcFalse; |
327a7fd4 | 167 | |
eb0cf671 PL |
168 | current_arch_machine_name = FcCacheMachineSignature (); |
169 | current_arch_start = FcCacheSkipToArch(cache->fd, | |
170 | current_arch_machine_name); | |
171 | if (current_arch_start < 0) | |
172 | goto bail0; | |
327a7fd4 | 173 | |
eb0cf671 PL |
174 | lseek (cache->fd, current_arch_start, SEEK_SET); |
175 | if (FcCacheReadString (cache->fd, candidate_arch_machine_name, | |
176 | sizeof (candidate_arch_machine_name)) == 0) | |
177 | goto bail0; | |
1b7be377 | 178 | |
eb0cf671 | 179 | while (1) |
1b7be377 | 180 | { |
eb0cf671 PL |
181 | FcCacheReadString (cache->fd, name_buf, sizeof (name_buf)); |
182 | if (!strlen(name_buf)) | |
1b7be377 | 183 | break; |
1b7be377 | 184 | |
eb0cf671 PL |
185 | d = malloc (sizeof (FcGlobalCacheDir)); |
186 | if (!d) | |
187 | goto bail1; | |
1b7be377 | 188 | |
eb0cf671 PL |
189 | d->next = cache->dirs; |
190 | cache->dirs = d; | |
1b7be377 | 191 | |
eb0cf671 PL |
192 | d->name = FcStrCopy (name_buf); |
193 | d->ent = 0; | |
194 | d->offset = lseek (cache->fd, 0, SEEK_CUR); | |
195 | read (cache->fd, &d->metadata, sizeof (FcCache)); | |
196 | lseek (cache->fd, d->metadata.count, SEEK_CUR); | |
1b7be377 | 197 | } |
eb0cf671 | 198 | return; |
1b7be377 | 199 | |
eb0cf671 PL |
200 | bail1: |
201 | for (d = cache->dirs; d; d = next) | |
1b7be377 | 202 | { |
eb0cf671 PL |
203 | next = d->next; |
204 | free (d); | |
1b7be377 | 205 | } |
eb0cf671 PL |
206 | cache->dirs = 0; |
207 | bail0: | |
208 | free (current_arch_machine_name); | |
209 | close (cache->fd); | |
210 | cache->fd = -1; | |
211 | return; | |
1b7be377 PL |
212 | } |
213 | ||
1b7be377 | 214 | FcBool |
eb0cf671 | 215 | FcGlobalCacheReadDir (FcFontSet *set, FcStrSet *dirs, FcGlobalCache * cache, const FcChar8 *dir, FcConfig *config) |
1b7be377 | 216 | { |
eb0cf671 | 217 | FcGlobalCacheDir *d; |
1b7be377 | 218 | |
eb0cf671 | 219 | if (cache->fd == -1) |
1b7be377 | 220 | return FcFalse; |
1b7be377 | 221 | |
eb0cf671 | 222 | for (d = cache->dirs; d; d = d->next) |
1b7be377 | 223 | { |
eb0cf671 | 224 | if (strcmp (d->name, dir) == 0) |
1b7be377 | 225 | { |
eb0cf671 PL |
226 | lseek (cache->fd, d->offset, SEEK_SET); |
227 | if (!FcDirCacheConsume (cache->fd, set)) | |
228 | return FcFalse; | |
229 | return FcTrue; | |
1b7be377 | 230 | } |
1b7be377 | 231 | } |
1b7be377 | 232 | |
eb0cf671 | 233 | return FcFalse; |
1b7be377 PL |
234 | } |
235 | ||
eb0cf671 PL |
236 | FcBool |
237 | FcGlobalCacheUpdate (FcGlobalCache *cache, | |
238 | const FcChar8 *name, | |
239 | FcFontSet *set) | |
1b7be377 | 240 | { |
eb0cf671 | 241 | FcGlobalCacheDir * d; |
1b7be377 | 242 | |
eb0cf671 PL |
243 | if (!set->nfont) |
244 | return FcTrue; | |
1b7be377 | 245 | |
eb0cf671 | 246 | for (d = cache->dirs; d; d = d->next) |
1b7be377 | 247 | { |
eb0cf671 | 248 | if (strcmp(d->name, name) == 0) |
1b7be377 | 249 | break; |
24330d27 | 250 | } |
24330d27 | 251 | |
eb0cf671 | 252 | if (!d) |
24330d27 | 253 | { |
eb0cf671 PL |
254 | d = malloc (sizeof (FcGlobalCacheDir)); |
255 | if (!d) | |
256 | return FcFalse; | |
257 | d->next = cache->dirs; | |
258 | cache->dirs = d; | |
24330d27 | 259 | } |
24330d27 | 260 | |
eb0cf671 | 261 | cache->updated = FcTrue; |
24330d27 | 262 | |
eb0cf671 PL |
263 | d->name = FcStrCopy (name); |
264 | d->ent = FcDirCacheProduce (set, &d->metadata); | |
265 | d->offset = 0; | |
266 | return FcTrue; | |
24330d27 KP |
267 | } |
268 | ||
269 | FcBool | |
327a7fd4 KP |
270 | FcGlobalCacheSave (FcGlobalCache *cache, |
271 | const FcChar8 *cache_file) | |
24330d27 | 272 | { |
eb0cf671 | 273 | int fd; |
327a7fd4 | 274 | FcGlobalCacheDir *dir; |
327a7fd4 | 275 | FcAtomic *atomic; |
eb0cf671 PL |
276 | off_t current_arch_start = 0, truncate_to; |
277 | char * current_arch_machine_name, * header; | |
24330d27 | 278 | |
eb0cf671 | 279 | if (!cache->updated) |
24330d27 KP |
280 | return FcTrue; |
281 | ||
daeed6e0 | 282 | #if defined (HAVE_GETUID) && defined (HAVE_GETEUID) |
a391da8f KP |
283 | /* Set-UID programs can't safely update the cache */ |
284 | if (getuid () != geteuid ()) | |
285 | return FcFalse; | |
daeed6e0 | 286 | #endif |
a391da8f | 287 | |
134f6011 KP |
288 | atomic = FcAtomicCreate (cache_file); |
289 | if (!atomic) | |
24330d27 | 290 | goto bail0; |
134f6011 | 291 | if (!FcAtomicLock (atomic)) |
24330d27 | 292 | goto bail1; |
eb0cf671 PL |
293 | fd = open ((char *) FcAtomicNewFile(atomic), O_RDWR | O_CREAT, |
294 | S_IRUSR | S_IWUSR); | |
295 | if (fd == -1) | |
24330d27 KP |
296 | goto bail2; |
297 | ||
eb0cf671 PL |
298 | current_arch_machine_name = FcCacheMachineSignature (); |
299 | current_arch_start = FcCacheSkipToArch(fd, current_arch_machine_name); | |
300 | if (current_arch_start < 0) | |
301 | current_arch_start = FcCacheNextOffset (lseek(fd, 0, SEEK_END)); | |
302 | ||
303 | if (!FcCacheMoveDown(fd, current_arch_start)) | |
304 | goto bail2; | |
305 | ||
306 | current_arch_start = lseek(fd, 0, SEEK_CUR); | |
307 | if (ftruncate (fd, current_arch_start) == -1) | |
308 | goto bail2; | |
309 | ||
310 | truncate_to = current_arch_start; | |
311 | for (dir = cache->dirs; dir; dir = dir->next) | |
24330d27 | 312 | { |
eb0cf671 PL |
313 | truncate_to += strlen(dir->name) + 1; |
314 | truncate_to += sizeof (FcCache); | |
315 | truncate_to = FcCacheNextOffset (current_arch_start + truncate_to); | |
316 | truncate_to += dir->metadata.count; | |
317 | } | |
318 | truncate_to -= current_arch_start; | |
319 | header = malloc (10 + strlen (current_arch_machine_name)); | |
320 | if (!header) | |
321 | goto bail1; | |
322 | sprintf (header, "%8x ", (int)truncate_to); | |
323 | strcat (header, current_arch_machine_name); | |
324 | if (!FcCacheWriteString (fd, header)) | |
325 | goto bail1; | |
326 | ||
327 | for (dir = cache->dirs; dir; dir = dir->next) | |
328 | { | |
329 | FcCacheWriteString (fd, dir->name); | |
330 | write (fd, &dir->metadata, sizeof(FcCache)); | |
331 | lseek (fd, FcCacheNextOffset (lseek(fd, 0, SEEK_END)), SEEK_SET); | |
332 | write (fd, dir->ent, dir->metadata.count); | |
24330d27 | 333 | } |
eb0cf671 | 334 | FcCacheWriteString (fd, ""); |
24330d27 | 335 | |
eb0cf671 | 336 | if (close (fd) == -1) |
24330d27 KP |
337 | goto bail3; |
338 | ||
134f6011 | 339 | if (!FcAtomicReplaceOrig (atomic)) |
24330d27 KP |
340 | goto bail3; |
341 | ||
134f6011 KP |
342 | FcAtomicUnlock (atomic); |
343 | FcAtomicDestroy (atomic); | |
344 | ||
24330d27 KP |
345 | cache->updated = FcFalse; |
346 | return FcTrue; | |
347 | ||
24330d27 | 348 | bail3: |
134f6011 | 349 | FcAtomicDeleteNew (atomic); |
24330d27 | 350 | bail2: |
134f6011 | 351 | FcAtomicUnlock (atomic); |
24330d27 | 352 | bail1: |
134f6011 | 353 | FcAtomicDestroy (atomic); |
24330d27 KP |
354 | bail0: |
355 | return FcFalse; | |
356 | } | |
357 | ||
eb0cf671 | 358 | #define PAGESIZE 8192 |
212c9f43 | 359 | /* |
eb0cf671 PL |
360 | * Find the next presumably-mmapable offset after the supplied file |
361 | * position. | |
212c9f43 | 362 | */ |
4262e0b3 PL |
363 | static int |
364 | FcCacheNextOffset(off_t w) | |
179c3995 | 365 | { |
212c9f43 PL |
366 | if (w % PAGESIZE == 0) |
367 | return w; | |
368 | else | |
369 | return ((w / PAGESIZE)+1)*PAGESIZE; | |
179c3995 KP |
370 | } |
371 | ||
212c9f43 PL |
372 | /* return the address of the segment for the provided arch, |
373 | * or -1 if arch not found */ | |
374 | static off_t | |
375 | FcCacheSkipToArch (int fd, const char * arch) | |
376 | { | |
2dbe7597 PL |
377 | char candidate_arch_machine_name_count[MACHINE_SIGNATURE_SIZE + 9]; |
378 | char * candidate_arch; | |
212c9f43 PL |
379 | off_t current_arch_start = 0; |
380 | ||
381 | /* skip arches that are not the current arch */ | |
382 | while (1) | |
383 | { | |
384 | long bs; | |
385 | ||
386 | lseek (fd, current_arch_start, SEEK_SET); | |
eb0cf671 | 387 | if (FcCacheReadString (fd, candidate_arch_machine_name_count, |
2dbe7597 | 388 | sizeof (candidate_arch_machine_name_count)) == 0) |
212c9f43 | 389 | break; |
2dbe7597 PL |
390 | if (!strlen(candidate_arch_machine_name_count)) |
391 | return -1; | |
392 | bs = strtol(candidate_arch_machine_name_count, &candidate_arch, 16); | |
393 | candidate_arch++; /* skip leading space */ | |
212c9f43 | 394 | |
2dbe7597 | 395 | if (strcmp (candidate_arch, arch)==0) |
212c9f43 PL |
396 | break; |
397 | current_arch_start += bs; | |
398 | } | |
399 | ||
eb0cf671 | 400 | if (candidate_arch && strcmp (candidate_arch, arch)!=0) |
212c9f43 PL |
401 | return -1; |
402 | ||
403 | return current_arch_start; | |
404 | } | |
405 | ||
406 | /* Cuts out the segment at the file pointer (moves everything else | |
407 | * down to cover it), and leaves the file pointer at the end of the | |
408 | * file. */ | |
212c9f43 PL |
409 | static FcBool |
410 | FcCacheMoveDown (int fd, off_t start) | |
411 | { | |
eb0cf671 | 412 | char * buf = malloc (8192); |
2dbe7597 | 413 | char candidate_arch_machine_name[MACHINE_SIGNATURE_SIZE + 9]; |
4262e0b3 | 414 | long bs; |
212c9f43 PL |
415 | int c, bytes_skipped; |
416 | ||
417 | if (!buf) | |
418 | return FcFalse; | |
419 | ||
420 | lseek (fd, start, SEEK_SET); | |
eb0cf671 | 421 | if (FcCacheReadString (fd, candidate_arch_machine_name, |
212c9f43 PL |
422 | sizeof (candidate_arch_machine_name)) == 0) |
423 | goto done; | |
2dbe7597 | 424 | if (!strlen(candidate_arch_machine_name)) |
212c9f43 PL |
425 | goto done; |
426 | ||
2dbe7597 | 427 | bs = strtol(candidate_arch_machine_name, 0, 16); |
212c9f43 PL |
428 | if (bs == 0) |
429 | goto done; | |
430 | ||
431 | bytes_skipped = 0; | |
432 | do | |
433 | { | |
434 | lseek (fd, start+bs+bytes_skipped, SEEK_SET); | |
eb0cf671 | 435 | if ((c = read (fd, buf, 8192)) <= 0) |
212c9f43 PL |
436 | break; |
437 | lseek (fd, start+bytes_skipped, SEEK_SET); | |
438 | if (write (fd, buf, c) < 0) | |
439 | goto bail; | |
440 | bytes_skipped += c; | |
441 | } | |
442 | while (c > 0); | |
443 | lseek (fd, start+bytes_skipped, SEEK_SET); | |
444 | ||
445 | done: | |
446 | free (buf); | |
447 | return FcTrue; | |
448 | ||
449 | bail: | |
450 | free (buf); | |
451 | return FcFalse; | |
452 | } | |
453 | ||
1b7be377 PL |
454 | FcBool |
455 | FcDirCacheValid (const FcChar8 *dir) | |
456 | { | |
457 | FcChar8 *cache_file = FcStrPlus (dir, (FcChar8 *) "/" FC_DIR_CACHE_FILE); | |
458 | struct stat file_stat, dir_stat; | |
459 | ||
460 | if (stat ((char *) dir, &dir_stat) < 0) | |
461 | { | |
462 | FcStrFree (cache_file); | |
463 | return FcFalse; | |
464 | } | |
465 | if (stat ((char *) cache_file, &file_stat) < 0) | |
466 | { | |
467 | FcStrFree (cache_file); | |
468 | return FcFalse; | |
469 | } | |
470 | FcStrFree (cache_file); | |
471 | /* | |
472 | * If the directory has been modified more recently than | |
473 | * the cache file, the cache is not valid | |
474 | */ | |
475 | if (dir_stat.st_mtime - file_stat.st_mtime > 0) | |
476 | return FcFalse; | |
477 | return FcTrue; | |
478 | } | |
479 | ||
4262e0b3 | 480 | static int |
1b7be377 PL |
481 | FcCacheReadDirs (FcConfig * config, FcGlobalCache * cache, |
482 | FcStrList *list, FcFontSet * set) | |
4262e0b3 PL |
483 | { |
484 | DIR *d; | |
485 | struct dirent *e; | |
486 | int ret = 0; | |
487 | FcChar8 *dir; | |
488 | FcChar8 *file, *base; | |
489 | FcStrSet *subdirs; | |
490 | FcStrList *sublist; | |
491 | struct stat statb; | |
492 | ||
493 | /* | |
494 | * Now scan all of the directories into separate databases | |
495 | * and write out the results | |
496 | */ | |
497 | while ((dir = FcStrListNext (list))) | |
498 | { | |
499 | /* freed below */ | |
500 | file = (FcChar8 *) malloc (strlen ((char *) dir) + 1 + FC_MAX_FILE_LEN + 1); | |
501 | if (!file) | |
502 | return FcFalse; | |
503 | ||
504 | strcpy ((char *) file, (char *) dir); | |
505 | strcat ((char *) file, "/"); | |
506 | base = file + strlen ((char *) file); | |
507 | ||
508 | subdirs = FcStrSetCreate (); | |
509 | if (!subdirs) | |
510 | { | |
511 | fprintf (stderr, "Can't create directory set\n"); | |
512 | ret++; | |
513 | free (file); | |
514 | continue; | |
515 | } | |
516 | ||
517 | if (access ((char *) dir, X_OK) < 0) | |
518 | { | |
519 | switch (errno) { | |
520 | case ENOENT: | |
521 | case ENOTDIR: | |
522 | case EACCES: | |
523 | break; | |
524 | default: | |
525 | fprintf (stderr, "\"%s\": ", dir); | |
526 | perror (""); | |
527 | ret++; | |
528 | } | |
529 | FcStrSetDestroy (subdirs); | |
530 | free (file); | |
531 | continue; | |
532 | } | |
533 | if (stat ((char *) dir, &statb) == -1) | |
534 | { | |
535 | fprintf (stderr, "\"%s\": ", dir); | |
536 | perror (""); | |
537 | FcStrSetDestroy (subdirs); | |
538 | ret++; | |
539 | free (file); | |
540 | continue; | |
541 | } | |
542 | if (!S_ISDIR (statb.st_mode)) | |
543 | { | |
544 | fprintf (stderr, "\"%s\": not a directory, skipping\n", dir); | |
545 | FcStrSetDestroy (subdirs); | |
546 | free (file); | |
547 | continue; | |
548 | } | |
549 | d = opendir ((char *) dir); | |
550 | if (!d) | |
551 | { | |
552 | FcStrSetDestroy (subdirs); | |
553 | free (file); | |
554 | continue; | |
555 | } | |
556 | while ((e = readdir (d))) | |
557 | { | |
558 | if (e->d_name[0] != '.' && strlen (e->d_name) < FC_MAX_FILE_LEN) | |
559 | { | |
560 | strcpy ((char *) base, (char *) e->d_name); | |
561 | if (FcFileIsDir (file) && !FcStrSetAdd (subdirs, file)) | |
562 | ret++; | |
563 | } | |
564 | } | |
565 | closedir (d); | |
2dbe7597 | 566 | if (!FcDirCacheValid (dir) || !FcDirCacheRead (set, dir)) |
4262e0b3 | 567 | { |
1b7be377 PL |
568 | if (FcDebug () & FC_DBG_FONTSET) |
569 | printf ("scan dir %s\n", dir); | |
570 | FcDirScanConfig (set, subdirs, cache, | |
571 | config->blanks, dir, FcFalse, config); | |
4262e0b3 PL |
572 | } |
573 | sublist = FcStrListCreate (subdirs); | |
574 | FcStrSetDestroy (subdirs); | |
575 | if (!sublist) | |
576 | { | |
577 | fprintf (stderr, "Can't create subdir list in \"%s\"\n", dir); | |
578 | ret++; | |
579 | free (file); | |
580 | continue; | |
581 | } | |
1b7be377 | 582 | ret += FcCacheReadDirs (config, cache, sublist, set); |
4262e0b3 PL |
583 | free (file); |
584 | } | |
585 | FcStrListDone (list); | |
586 | return ret; | |
587 | } | |
588 | ||
589 | FcFontSet * | |
1b7be377 | 590 | FcCacheRead (FcConfig *config, FcGlobalCache * cache) |
4262e0b3 PL |
591 | { |
592 | FcFontSet * s = FcFontSetCreate(); | |
593 | if (!s) | |
594 | return 0; | |
595 | ||
1b7be377 | 596 | if (FcCacheReadDirs (config, cache, FcConfigGetConfigDirs (config), s)) |
4262e0b3 PL |
597 | goto bail; |
598 | ||
599 | return s; | |
600 | ||
601 | bail: | |
602 | FcFontSetDestroy (s); | |
603 | return 0; | |
604 | } | |
605 | ||
212c9f43 | 606 | /* read serialized state from the cache file */ |
eb0cf671 | 607 | static FcBool |
4262e0b3 | 608 | FcDirCacheRead (FcFontSet * set, const FcChar8 *dir) |
212c9f43 | 609 | { |
4262e0b3 PL |
610 | FcChar8 *cache_file = FcStrPlus (dir, (FcChar8 *) "/" FC_DIR_CACHE_FILE); |
611 | int fd; | |
212c9f43 | 612 | char * current_arch_machine_name; |
2dbe7597 | 613 | char candidate_arch_machine_name[9+MACHINE_SIGNATURE_SIZE]; |
212c9f43 PL |
614 | off_t current_arch_start = 0; |
615 | ||
4262e0b3 PL |
616 | if (!cache_file) |
617 | goto bail; | |
212c9f43 | 618 | |
eb0cf671 | 619 | current_arch_machine_name = FcCacheMachineSignature(); |
4262e0b3 | 620 | fd = open(cache_file, O_RDONLY); |
212c9f43 | 621 | if (fd == -1) |
2dbe7597 | 622 | goto bail; |
212c9f43 | 623 | |
212c9f43 PL |
624 | current_arch_start = FcCacheSkipToArch(fd, current_arch_machine_name); |
625 | if (current_arch_start < 0) | |
4262e0b3 | 626 | goto bail1; |
212c9f43 PL |
627 | |
628 | lseek (fd, current_arch_start, SEEK_SET); | |
eb0cf671 | 629 | if (FcCacheReadString (fd, candidate_arch_machine_name, |
212c9f43 | 630 | sizeof (candidate_arch_machine_name)) == 0) |
4262e0b3 | 631 | goto bail1; |
eb0cf671 PL |
632 | |
633 | if (!FcDirCacheConsume (fd, set)) | |
634 | goto bail1; | |
635 | ||
636 | close(fd); | |
637 | free (cache_file); | |
638 | return FcTrue; | |
639 | ||
640 | bail1: | |
641 | close(fd); | |
642 | bail: | |
643 | free (cache_file); | |
644 | return FcFalse; | |
645 | } | |
646 | ||
647 | static FcBool | |
648 | FcDirCacheConsume (int fd, FcFontSet *set) | |
649 | { | |
650 | FcCache metadata; | |
651 | void * current_dir_block; | |
212c9f43 | 652 | |
212c9f43 PL |
653 | read(fd, &metadata, sizeof(FcCache)); |
654 | if (metadata.magic != FC_CACHE_MAGIC) | |
eb0cf671 | 655 | return FcFalse; |
212c9f43 | 656 | |
2dbe7597 | 657 | if (!metadata.count) |
eb0cf671 | 658 | return FcTrue; |
2dbe7597 PL |
659 | |
660 | off_t pos = FcCacheNextOffset (lseek(fd, 0, SEEK_CUR)); | |
661 | current_dir_block = mmap (0, metadata.count, | |
662 | PROT_READ, MAP_SHARED, fd, pos); | |
663 | if (current_dir_block == MAP_FAILED) | |
eb0cf671 | 664 | return FcFalse; |
2dbe7597 PL |
665 | |
666 | if (!FcFontSetUnserialize (metadata, set, current_dir_block)) | |
eb0cf671 PL |
667 | return FcFalse; |
668 | ||
212c9f43 | 669 | return FcTrue; |
eb0cf671 PL |
670 | } |
671 | ||
672 | static void * | |
673 | FcDirCacheProduce (FcFontSet *set, FcCache *metadata) | |
674 | { | |
675 | void * current_dir_block, * final_dir_block; | |
676 | static int rand_state = 0; | |
677 | int bank; | |
678 | ||
679 | if (!rand_state) | |
680 | rand_state = time(0L); | |
681 | bank = rand_r(&rand_state); | |
682 | ||
683 | while (FcCacheHaveBank(bank)) | |
684 | bank = rand_r(&rand_state); | |
685 | ||
686 | memset (metadata, 0, sizeof(FcCache)); | |
687 | FcFontSetNewBank(); | |
688 | metadata->count = FcFontSetNeededBytes (set); | |
689 | metadata->magic = FC_CACHE_MAGIC; | |
690 | metadata->bank = bank; | |
691 | ||
692 | if (!metadata->count) /* not a failure, no fonts to write */ | |
693 | return 0; | |
694 | ||
695 | current_dir_block = malloc (metadata->count); | |
696 | if (!current_dir_block) | |
697 | goto bail; | |
698 | final_dir_block = FcFontSetDistributeBytes (metadata, current_dir_block); | |
699 | ||
700 | if ((char *)current_dir_block + metadata->count != final_dir_block) | |
701 | goto bail; | |
702 | ||
703 | if (!FcFontSetSerialize (bank, set)) | |
704 | goto bail; | |
705 | ||
706 | return current_dir_block; | |
212c9f43 | 707 | |
4262e0b3 | 708 | bail: |
eb0cf671 PL |
709 | free (current_dir_block); |
710 | return 0; | |
212c9f43 PL |
711 | } |
712 | ||
713 | /* write serialized state to the cache file */ | |
714 | FcBool | |
eb0cf671 | 715 | FcDirCacheWrite (FcFontSet *set, const FcChar8 *dir) |
212c9f43 | 716 | { |
4262e0b3 | 717 | FcChar8 *cache_file = FcStrPlus (dir, (FcChar8 *) "/" FC_DIR_CACHE_FILE); |
eb0cf671 | 718 | int fd; |
212c9f43 PL |
719 | FcCache metadata; |
720 | off_t current_arch_start = 0, truncate_to; | |
2dbe7597 | 721 | char * current_arch_machine_name, * header; |
eb0cf671 | 722 | void * current_dir_block; |
212c9f43 | 723 | |
4262e0b3 PL |
724 | if (!cache_file) |
725 | goto bail; | |
726 | ||
eb0cf671 | 727 | current_dir_block = FcDirCacheProduce (set, &metadata); |
212c9f43 | 728 | |
eb0cf671 | 729 | if (!metadata.count) |
4262e0b3 PL |
730 | { |
731 | unlink (cache_file); | |
732 | free (cache_file); | |
733 | return FcTrue; | |
734 | } | |
735 | ||
4262e0b3 PL |
736 | if (!current_dir_block) |
737 | goto bail; | |
212c9f43 | 738 | |
4262e0b3 PL |
739 | if (FcDebug () & FC_DBG_CACHE) |
740 | printf ("FcDirCacheWriteDir cache_file \"%s\"\n", cache_file); | |
741 | ||
742 | fd = open(cache_file, O_RDWR | O_CREAT, 0666); | |
212c9f43 | 743 | if (fd == -1) |
eb0cf671 | 744 | goto bail0; |
212c9f43 | 745 | |
eb0cf671 | 746 | current_arch_machine_name = FcCacheMachineSignature (); |
212c9f43 PL |
747 | current_arch_start = FcCacheSkipToArch(fd, current_arch_machine_name); |
748 | if (current_arch_start < 0) | |
4262e0b3 | 749 | current_arch_start = FcCacheNextOffset (lseek(fd, 0, SEEK_END)); |
212c9f43 PL |
750 | |
751 | if (!FcCacheMoveDown(fd, current_arch_start)) | |
eb0cf671 | 752 | goto bail2; |
212c9f43 PL |
753 | |
754 | current_arch_start = lseek(fd, 0, SEEK_CUR); | |
755 | if (ftruncate (fd, current_arch_start) == -1) | |
eb0cf671 | 756 | goto bail2; |
212c9f43 | 757 | |
212c9f43 | 758 | /* now write the address of the next offset */ |
eb0cf671 | 759 | truncate_to = FcCacheNextOffset (FcCacheNextOffset (current_arch_start + sizeof (FcCache)) + metadata.count) - current_arch_start; |
2dbe7597 | 760 | header = malloc (10 + strlen (current_arch_machine_name)); |
eb0cf671 PL |
761 | if (!header) |
762 | goto bail1; | |
2dbe7597 PL |
763 | sprintf (header, "%8x ", (int)truncate_to); |
764 | strcat (header, current_arch_machine_name); | |
eb0cf671 | 765 | if (!FcCacheWriteString (fd, header)) |
4262e0b3 | 766 | goto bail1; |
212c9f43 | 767 | |
4262e0b3 PL |
768 | write (fd, &metadata, sizeof(FcCache)); |
769 | lseek (fd, FcCacheNextOffset (lseek(fd, 0, SEEK_END)), SEEK_SET); | |
eb0cf671 | 770 | write (fd, current_dir_block, metadata.count); |
4262e0b3 | 771 | |
2dbe7597 | 772 | /* this actually serves to pad out the cache file, if needed */ |
212c9f43 | 773 | if (ftruncate (fd, current_arch_start + truncate_to) == -1) |
4262e0b3 | 774 | goto bail1; |
212c9f43 PL |
775 | |
776 | close(fd); | |
777 | return FcTrue; | |
778 | ||
eb0cf671 PL |
779 | bail2: |
780 | free (header); | |
4262e0b3 | 781 | bail1: |
212c9f43 | 782 | free (current_arch_machine_name); |
eb0cf671 PL |
783 | bail0: |
784 | free (current_dir_block); | |
4262e0b3 PL |
785 | bail: |
786 | unlink (cache_file); | |
787 | free (cache_file); | |
212c9f43 PL |
788 | return FcFalse; |
789 | } | |
790 | ||
2dbe7597 | 791 | static char * |
eb0cf671 | 792 | FcCacheMachineSignature () |
2dbe7597 PL |
793 | { |
794 | static char buf[MACHINE_SIGNATURE_SIZE]; | |
795 | int magic = ENDIAN_TEST; | |
796 | char * m = (char *)&magic; | |
797 | ||
798 | sprintf (buf, "%2x%2x%2x%2x " | |
799 | "%4x %4x %4x %4x %4x %4x %4x %4x %4x %4x %4x %4x " | |
800 | "%4x %4x %4x %4x %4x %4x %4x\n", | |
801 | m[0], m[1], m[2], m[3], | |
802 | sizeof (char), | |
803 | sizeof (char *), | |
804 | sizeof (int), | |
805 | sizeof (FcPattern), | |
806 | sizeof (FcPatternEltPtr), | |
807 | sizeof (struct _FcPatternElt *), | |
808 | sizeof (FcPatternElt), | |
809 | sizeof (FcObjectPtr), | |
810 | sizeof (FcValueListPtr), | |
811 | sizeof (FcValue), | |
812 | sizeof (FcValueBinding), | |
813 | sizeof (struct _FcValueList *), | |
814 | sizeof (FcCharSet), | |
815 | sizeof (FcCharLeaf **), | |
816 | sizeof (FcChar16 *), | |
817 | sizeof (FcChar16), | |
818 | sizeof (FcCharLeaf), | |
819 | sizeof (FcChar32), | |
820 | sizeof (FcCache)); | |
821 | ||
822 | return buf; | |
823 | } | |
824 | ||
4262e0b3 PL |
825 | static int banks_ptr = 0, banks_alloc = 0; |
826 | static int * bankId = 0; | |
827 | ||
eb0cf671 | 828 | static FcBool |
4262e0b3 PL |
829 | FcCacheHaveBank (int bank) |
830 | { | |
831 | int i; | |
832 | ||
833 | if (bank < FC_BANK_FIRST) | |
834 | return FcTrue; | |
835 | ||
836 | for (i = 0; i < banks_ptr; i++) | |
837 | if (bankId[i] == bank) | |
838 | return FcTrue; | |
839 | ||
840 | return FcFalse; | |
841 | } | |
842 | ||
843 | int | |
844 | FcCacheBankToIndex (int bank) | |
845 | { | |
846 | static int lastBank = FC_BANK_DYNAMIC, lastIndex = -1; | |
847 | int i; | |
848 | int * b; | |
849 | ||
850 | if (bank == lastBank) | |
851 | return lastIndex; | |
852 | ||
853 | for (i = 0; i < banks_ptr; i++) | |
854 | if (bankId[i] == bank) | |
855 | return i; | |
856 | ||
2dbe7597 | 857 | if (banks_ptr >= banks_alloc) |
4262e0b3 | 858 | { |
2dbe7597 | 859 | b = realloc (bankId, (banks_alloc + 4) * sizeof(int)); |
4262e0b3 PL |
860 | if (!b) |
861 | return -1; | |
862 | ||
863 | bankId = b; | |
864 | banks_alloc += 4; | |
865 | } | |
866 | ||
867 | i = banks_ptr++; | |
868 | bankId[i] = bank; | |
869 | return i; | |
870 | } |