* documentation for any purpose is hereby granted without fee, provided that
* the above copyright notice appear in all copies and that both that
* copyright notice and this permission notice appear in supporting
- * documentation, and that the name of Keith Packard not be used in
+ * documentation, and that the name of the author(s) not be used in
* advertising or publicity pertaining to distribution of the software without
- * specific, written prior permission. Keith Packard makes no
+ * specific, written prior permission. The authors make no
* representations about the suitability of this software for any purpose. It
* is provided "as is" without express or implied warranty.
*
- * KEITH PACKARD DISCLAIMS ALL WARRANTIES WITH REGARD TO THIS SOFTWARE,
+ * THE AUTHOR(S) DISCLAIMS ALL WARRANTIES WITH REGARD TO THIS SOFTWARE,
* INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS, IN NO
- * EVENT SHALL KEITH PACKARD BE LIABLE FOR ANY SPECIAL, INDIRECT OR
+ * EVENT SHALL THE AUTHOR(S) BE LIABLE FOR ANY SPECIAL, INDIRECT OR
* CONSEQUENTIAL DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM LOSS OF USE,
* DATA OR PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER
* TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR
* PERFORMANCE OF THIS SOFTWARE.
*/
-
#include "fcint.h"
-#include "../fc-arch/fcarch.h"
+#include "fcarch.h"
#include <stdio.h>
+#include <stdlib.h>
#include <fcntl.h>
#include <dirent.h>
#include <string.h>
+#include <limits.h>
#include <sys/types.h>
+#include <sys/stat.h>
+#include <assert.h>
#if defined(HAVE_MMAP) || defined(__CYGWIN__)
# include <unistd.h>
# include <sys/mman.h>
-#elif defined(_WIN32)
-# include <windows.h>
+#endif
+#if defined(_WIN32)
+#include <sys/locking.h>
#endif
#ifndef O_BINARY
#define O_BINARY 0
#endif
+
struct MD5Context {
FcChar32 buf[4];
FcChar32 bits[2];
};
static void MD5Init(struct MD5Context *ctx);
-static void MD5Update(struct MD5Context *ctx, unsigned char *buf, unsigned len);
+static void MD5Update(struct MD5Context *ctx, const unsigned char *buf, unsigned len);
static void MD5Final(unsigned char digest[16], struct MD5Context *ctx);
static void MD5Transform(FcChar32 buf[4], FcChar32 in[16]);
#define CACHEBASE_LEN (1 + 32 + 1 + sizeof (FC_ARCHITECTURE) + sizeof (FC_CACHE_SUFFIX))
+static FcBool
+FcCacheIsMmapSafe (int fd)
+{
+ enum {
+ MMAP_NOT_INITIALIZED = 0,
+ MMAP_USE,
+ MMAP_DONT_USE,
+ MMAP_CHECK_FS,
+ } status;
+ static void *static_status;
+
+ status = (intptr_t) fc_atomic_ptr_get (&static_status);
+
+ if (status == MMAP_NOT_INITIALIZED)
+ {
+ const char *env = getenv ("FONTCONFIG_USE_MMAP");
+ FcBool use;
+ if (env && FcNameBool ((const FcChar8 *) env, &use))
+ status = use ? MMAP_USE : MMAP_DONT_USE;
+ else
+ status = MMAP_CHECK_FS;
+ (void) fc_atomic_ptr_cmpexch (&static_status, NULL, (void *) status);
+ }
+
+ if (status == MMAP_CHECK_FS)
+ return FcIsFsMmapSafe (fd);
+ else
+ return status == MMAP_USE;
+
+}
+
static const char bin2hex[] = { '0', '1', '2', '3',
'4', '5', '6', '7',
'8', '9', 'a', 'b',
struct MD5Context ctx;
MD5Init (&ctx);
- MD5Update (&ctx, (unsigned char *)dir, strlen ((char *) dir));
+ MD5Update (&ctx, (const unsigned char *)dir, strlen ((const char *) dir));
MD5Final (hash, &ctx);
FcChar8 cache_base[CACHEBASE_LEN];
FcStrList *list;
FcChar8 *cache_dir;
+ const FcChar8 *sysroot = FcConfigGetSysRoot (config);
FcDirCacheBasename (dir, cache_base);
while ((cache_dir = FcStrListNext (list)))
{
- cache_hashed = FcStrPlus (cache_dir, cache_base);
+ if (sysroot)
+ cache_hashed = FcStrBuildFilename (sysroot, cache_dir, cache_base, NULL);
+ else
+ cache_hashed = FcStrBuildFilename (cache_dir, cache_base, NULL);
if (!cache_hashed)
break;
(void) unlink ((char *) cache_hashed);
+ FcStrFree (cache_hashed);
}
FcStrListDone (list);
/* return FcFalse if something went wrong */
}
static int
-FcCacheReadDirs (FcConfig * config,
- FcStrList *list, FcFontSet * set, FcStrSet *processed_dirs)
+FcDirCacheOpenFile (const FcChar8 *cache_file, struct stat *file_stat)
{
- int ret = 0;
- FcChar8 *dir;
- FcStrSet *subdirs;
- FcStrList *sublist;
+ int fd;
- /*
- * Read in the results from 'list'.
- */
- while ((dir = FcStrListNext (list)))
+#ifdef _WIN32
+ if (FcStat (cache_file, file_stat) < 0)
+ return -1;
+#endif
+ fd = FcOpen((char *) cache_file, O_RDONLY | O_BINARY);
+ if (fd < 0)
+ return fd;
+#ifndef _WIN32
+ if (fstat (fd, file_stat) < 0)
{
- if (!FcConfigAcceptFilename (config, dir))
- continue;
-
- /* Skip this directory if already updated
- * to avoid the looped directories via symlinks
- * Clearly a dir not in fonts.conf shouldn't be globally cached.
- */
-
- if (FcStrSetMember (processed_dirs, dir))
- continue;
- if (!FcStrSetAdd (processed_dirs, dir))
- continue;
-
- subdirs = FcStrSetCreate ();
- if (!subdirs)
- {
- fprintf (stderr, "Can't create directory set\n");
- ret++;
- continue;
- }
-
- FcDirScanConfig (set, subdirs,
- config->blanks, dir, FcFalse, config);
-
- sublist = FcStrListCreate (subdirs);
- FcStrSetDestroy (subdirs);
- if (!sublist)
- {
- fprintf (stderr, "Can't create subdir list in \"%s\"\n", dir);
- ret++;
- continue;
- }
- ret += FcCacheReadDirs (config, sublist, set, processed_dirs);
+ close (fd);
+ return -1;
}
- FcStrListDone (list);
- return ret;
-}
-
-FcFontSet *
-FcCacheRead (FcConfig *config)
-{
- FcFontSet *s = FcFontSetCreate();
- FcStrSet *processed_dirs;
-
- if (!s)
- return 0;
-
- processed_dirs = FcStrSetCreate();
- if (!processed_dirs)
- goto bail;
-
- if (FcCacheReadDirs (config, FcConfigGetConfigDirs (config), s, processed_dirs))
- goto bail1;
-
- FcStrSetDestroy (processed_dirs);
- return s;
-
- bail1:
- FcStrSetDestroy (processed_dirs);
- bail:
- FcFontSetDestroy (s);
- return 0;
+#endif
+ return fd;
}
-/*
+/*
* Look for a cache file for the specified dir. Attempt
* to use each one we find, stopping when the callback
* indicates success
*/
static FcBool
-FcDirCacheProcess (FcConfig *config, const FcChar8 *dir,
- FcBool (*callback) (int fd, off_t size, void *closure),
+FcDirCacheProcess (FcConfig *config, const FcChar8 *dir,
+ FcBool (*callback) (FcConfig *config, int fd, struct stat *fd_stat,
+ struct stat *dir_stat, void *closure),
void *closure, FcChar8 **cache_file_ret)
{
int fd = -1;
FcChar8 cache_base[CACHEBASE_LEN];
FcStrList *list;
- FcChar8 *cache_dir;
+ FcChar8 *cache_dir, *d;
struct stat file_stat, dir_stat;
FcBool ret = FcFalse;
+ const FcChar8 *sysroot = FcConfigGetSysRoot (config);
- if (stat ((char *) dir, &dir_stat) < 0)
+ if (sysroot)
+ d = FcStrBuildFilename (sysroot, dir, NULL);
+ else
+ d = FcStrdup (dir);
+ if (FcStatChecksum (d, &dir_stat) < 0)
+ {
+ FcStrFree (d);
return FcFalse;
+ }
+ FcStrFree (d);
FcDirCacheBasename (dir, cache_base);
while ((cache_dir = FcStrListNext (list)))
{
- FcChar8 *cache_hashed = FcStrPlus (cache_dir, cache_base);
+ FcChar8 *cache_hashed;
+
+ if (sysroot)
+ cache_hashed = FcStrBuildFilename (sysroot, cache_dir, cache_base, NULL);
+ else
+ cache_hashed = FcStrBuildFilename (cache_dir, cache_base, NULL);
if (!cache_hashed)
break;
- fd = open((char *) cache_hashed, O_RDONLY | O_BINARY);
+ fd = FcDirCacheOpenFile (cache_hashed, &file_stat);
if (fd >= 0) {
- if (fstat (fd, &file_stat) >= 0 &&
- dir_stat.st_mtime <= file_stat.st_mtime)
+ ret = (*callback) (config, fd, &file_stat, &dir_stat, closure);
+ close (fd);
+ if (ret)
{
- ret = (*callback) (fd, file_stat.st_size, closure);
- if (ret)
- {
- if (cache_file_ret)
- *cache_file_ret = cache_hashed;
- else
- FcStrFree (cache_hashed);
- close (fd);
- break;
- }
+ if (cache_file_ret)
+ *cache_file_ret = cache_hashed;
+ else
+ FcStrFree (cache_hashed);
+ break;
}
- close (fd);
}
FcStrFree (cache_hashed);
}
FcStrListDone (list);
-
+
return ret;
}
-FcBool
-FcDirCacheLoad (int fd, off_t size, void *closure)
+#define FC_CACHE_MIN_MMAP 1024
+
+/*
+ * Skip list element, make sure the 'next' pointer is the last thing
+ * in the structure, it will be allocated large enough to hold all
+ * of the necessary pointers
+ */
+
+typedef struct _FcCacheSkip FcCacheSkip;
+
+struct _FcCacheSkip {
+ FcCache *cache;
+ FcRef ref;
+ intptr_t size;
+ dev_t cache_dev;
+ ino_t cache_ino;
+ time_t cache_mtime;
+ long cache_mtime_nano;
+ FcCacheSkip *next[1];
+};
+
+/*
+ * The head of the skip list; pointers for every possible level
+ * in the skip list, plus the largest level in the list
+ */
+
+#define FC_CACHE_MAX_LEVEL 16
+
+/* Protected by cache_lock below */
+static FcCacheSkip *fcCacheChains[FC_CACHE_MAX_LEVEL];
+static int fcCacheMaxLevel;
+
+
+static FcMutex *cache_lock;
+
+static void
+lock_cache (void)
{
- FcCache *cache;
- FcBool allocated = FcFalse;
+ FcMutex *lock;
+retry:
+ lock = fc_atomic_ptr_get (&cache_lock);
+ if (!lock) {
+ lock = (FcMutex *) malloc (sizeof (FcMutex));
+ FcMutexInit (lock);
+ if (!fc_atomic_ptr_cmpexch (&cache_lock, NULL, lock)) {
+ FcMutexFinish (lock);
+ goto retry;
+ }
+
+ FcMutexLock (lock);
+ /* Initialize random state */
+ FcRandom ();
+ return;
+ }
+ FcMutexLock (lock);
+}
+
+static void
+unlock_cache (void)
+{
+ FcMutexUnlock (cache_lock);
+}
+
+static void
+free_lock (void)
+{
+ FcMutex *lock;
+ lock = fc_atomic_ptr_get (&cache_lock);
+ if (lock && fc_atomic_ptr_cmpexch (&cache_lock, lock, NULL)) {
+ FcMutexFinish (lock);
+ free (lock);
+ }
+}
+
+
+
+/*
+ * Generate a random level number, distributed
+ * so that each level is 1/4 as likely as the one before
+ *
+ * Note that level numbers run 1 <= level <= MAX_LEVEL
+ */
+static int
+random_level (void)
+{
+ /* tricky bit -- each bit is '1' 75% of the time */
+ long int bits = FcRandom () | FcRandom ();
+ int level = 0;
+
+ while (++level < FC_CACHE_MAX_LEVEL)
+ {
+ if (bits & 1)
+ break;
+ bits >>= 1;
+ }
+ return level;
+}
+
+/*
+ * Insert cache into the list
+ */
+static FcBool
+FcCacheInsert (FcCache *cache, struct stat *cache_stat)
+{
+ FcCacheSkip **update[FC_CACHE_MAX_LEVEL];
+ FcCacheSkip *s, **next;
+ int i, level;
- if (size < sizeof (FcCache))
+ lock_cache ();
+
+ /*
+ * Find links along each chain
+ */
+ next = fcCacheChains;
+ for (i = fcCacheMaxLevel; --i >= 0; )
+ {
+ for (; (s = next[i]); next = s->next)
+ if (s->cache > cache)
+ break;
+ update[i] = &next[i];
+ }
+
+ /*
+ * Create new list element
+ */
+ level = random_level ();
+ if (level > fcCacheMaxLevel)
+ {
+ level = fcCacheMaxLevel + 1;
+ update[fcCacheMaxLevel] = &fcCacheChains[fcCacheMaxLevel];
+ fcCacheMaxLevel = level;
+ }
+
+ s = malloc (sizeof (FcCacheSkip) + (level - 1) * sizeof (FcCacheSkip *));
+ if (!s)
return FcFalse;
+
+ s->cache = cache;
+ s->size = cache->size;
+ FcRefInit (&s->ref, 1);
+ if (cache_stat)
+ {
+ s->cache_dev = cache_stat->st_dev;
+ s->cache_ino = cache_stat->st_ino;
+ s->cache_mtime = cache_stat->st_mtime;
+#ifdef HAVE_STRUCT_STAT_ST_MTIM
+ s->cache_mtime_nano = cache_stat->st_mtim.tv_nsec;
+#else
+ s->cache_mtime_nano = 0;
+#endif
+ }
+ else
+ {
+ s->cache_dev = 0;
+ s->cache_ino = 0;
+ s->cache_mtime = 0;
+ s->cache_mtime_nano = 0;
+ }
+
+ /*
+ * Insert into all fcCacheChains
+ */
+ for (i = 0; i < level; i++)
+ {
+ s->next[i] = *update[i];
+ *update[i] = s;
+ }
+
+ unlock_cache ();
+ return FcTrue;
+}
+
+static FcCacheSkip *
+FcCacheFindByAddrUnlocked (void *object)
+{
+ int i;
+ FcCacheSkip **next = fcCacheChains;
+ FcCacheSkip *s;
+
+ if (!object)
+ return NULL;
+
+ /*
+ * Walk chain pointers one level at a time
+ */
+ for (i = fcCacheMaxLevel; --i >= 0;)
+ while (next[i] && (char *) object >= ((char *) next[i]->cache + next[i]->size))
+ next = next[i]->next;
+ /*
+ * Here we are
+ */
+ s = next[0];
+ if (s && (char *) object < ((char *) s->cache + s->size))
+ return s;
+ return NULL;
+}
+
+static FcCacheSkip *
+FcCacheFindByAddr (void *object)
+{
+ FcCacheSkip *ret;
+ lock_cache ();
+ ret = FcCacheFindByAddrUnlocked (object);
+ unlock_cache ();
+ return ret;
+}
+
+static void
+FcCacheRemoveUnlocked (FcCache *cache)
+{
+ FcCacheSkip **update[FC_CACHE_MAX_LEVEL];
+ FcCacheSkip *s, **next;
+ int i;
+
+ /*
+ * Find links along each chain
+ */
+ next = fcCacheChains;
+ for (i = fcCacheMaxLevel; --i >= 0; )
+ {
+ for (; (s = next[i]); next = s->next)
+ if (s->cache >= cache)
+ break;
+ update[i] = &next[i];
+ }
+ s = next[0];
+ for (i = 0; i < fcCacheMaxLevel && *update[i] == s; i++)
+ *update[i] = s->next[i];
+ while (fcCacheMaxLevel > 0 && fcCacheChains[fcCacheMaxLevel - 1] == NULL)
+ fcCacheMaxLevel--;
+ free (s);
+}
+
+static FcCache *
+FcCacheFindByStat (struct stat *cache_stat)
+{
+ FcCacheSkip *s;
+
+ lock_cache ();
+ for (s = fcCacheChains[0]; s; s = s->next[0])
+ if (s->cache_dev == cache_stat->st_dev &&
+ s->cache_ino == cache_stat->st_ino &&
+ s->cache_mtime == cache_stat->st_mtime)
+ {
+#ifdef HAVE_STRUCT_STAT_ST_MTIM
+ if (s->cache_mtime != cache_stat->st_mtim.tv_nsec)
+ continue;
+#endif
+ FcRefInc (&s->ref);
+ unlock_cache ();
+ return s->cache;
+ }
+ unlock_cache ();
+ return NULL;
+}
+
+static void
+FcDirCacheDisposeUnlocked (FcCache *cache)
+{
+ FcCacheRemoveUnlocked (cache);
+
+ switch (cache->magic) {
+ case FC_CACHE_MAGIC_ALLOC:
+ free (cache);
+ break;
+ case FC_CACHE_MAGIC_MMAP:
#if defined(HAVE_MMAP) || defined(__CYGWIN__)
- cache = mmap (0, size, PROT_READ, MAP_SHARED, fd, 0);
+ munmap (cache, cache->size);
#elif defined(_WIN32)
+ UnmapViewOfFile (cache);
+#endif
+ break;
+ }
+}
+
+void
+FcCacheObjectReference (void *object)
+{
+ FcCacheSkip *skip = FcCacheFindByAddr (object);
+
+ if (skip)
+ FcRefInc (&skip->ref);
+}
+
+void
+FcCacheObjectDereference (void *object)
+{
+ FcCacheSkip *skip;
+
+ lock_cache ();
+ skip = FcCacheFindByAddrUnlocked (object);
+ if (skip)
{
- HANDLE hFileMap;
+ if (FcRefDec (&skip->ref) == 1)
+ FcDirCacheDisposeUnlocked (skip->cache);
+ }
+ unlock_cache ();
+}
- cache = NULL;
- hFileMap = CreateFileMapping((HANDLE) _get_osfhandle(fd), NULL,
- PAGE_READONLY, 0, 0, NULL);
- if (hFileMap != NULL)
+void
+FcCacheFini (void)
+{
+ int i;
+
+ for (i = 0; i < FC_CACHE_MAX_LEVEL; i++)
+ assert (fcCacheChains[i] == NULL);
+ assert (fcCacheMaxLevel == 0);
+
+ free_lock ();
+}
+
+static FcBool
+FcCacheTimeValid (FcConfig *config, FcCache *cache, struct stat *dir_stat)
+{
+ struct stat dir_static;
+ FcBool fnano = FcTrue;
+
+ if (!dir_stat)
+ {
+ const FcChar8 *sysroot = FcConfigGetSysRoot (config);
+ FcChar8 *d;
+
+ if (sysroot)
+ d = FcStrBuildFilename (sysroot, FcCacheDir (cache), NULL);
+ else
+ d = FcStrdup (FcCacheDir (cache));
+ if (FcStatChecksum (d, &dir_static) < 0)
{
- cache = MapViewOfFile (hFileMap, FILE_MAP_READ, 0, 0, size);
- CloseHandle (hFileMap);
+ FcStrFree (d);
+ return FcFalse;
}
+ FcStrFree (d);
+ dir_stat = &dir_static;
+ }
+#ifdef HAVE_STRUCT_STAT_ST_MTIM
+ fnano = (cache->checksum_nano == dir_stat->st_mtim.tv_nsec);
+ if (FcDebug () & FC_DBG_CACHE)
+ printf ("FcCacheTimeValid dir \"%s\" cache checksum %d.%ld dir checksum %d.%ld\n",
+ FcCacheDir (cache), cache->checksum, (long)cache->checksum_nano, (int) dir_stat->st_mtime, dir_stat->st_mtim.tv_nsec);
+#else
+ if (FcDebug () & FC_DBG_CACHE)
+ printf ("FcCacheTimeValid dir \"%s\" cache checksum %d dir checksum %d\n",
+ FcCacheDir (cache), cache->checksum, (int) dir_stat->st_mtime);
+#endif
+
+ return cache->checksum == (int) dir_stat->st_mtime && fnano;
+}
+
+static FcBool
+FcCacheOffsetsValid (FcCache *cache)
+{
+ char *base = (char *)cache;
+ char *end = base + cache->size;
+ intptr_t *dirs;
+ FcFontSet *fs;
+ int i, j;
+
+ if (cache->dir < 0 || cache->dir > cache->size - sizeof (intptr_t) ||
+ memchr (base + cache->dir, '\0', cache->size - cache->dir) == NULL)
+ return FcFalse;
+
+ if (cache->dirs < 0 || cache->dirs >= cache->size ||
+ cache->dirs_count < 0 ||
+ cache->dirs_count > (cache->size - cache->dirs) / sizeof (intptr_t))
+ return FcFalse;
+
+ dirs = FcCacheDirs (cache);
+ if (dirs)
+ {
+ for (i = 0; i < cache->dirs_count; i++)
+ {
+ FcChar8 *dir;
+
+ if (dirs[i] < 0 ||
+ dirs[i] > end - (char *) dirs - sizeof (intptr_t))
+ return FcFalse;
+
+ dir = FcOffsetToPtr (dirs, dirs[i], FcChar8);
+ if (memchr (dir, '\0', end - (char *) dir) == NULL)
+ return FcFalse;
+ }
}
+
+ if (cache->set < 0 || cache->set > cache->size - sizeof (FcFontSet))
+ return FcFalse;
+
+ fs = FcCacheSet (cache);
+ if (fs)
+ {
+ if (fs->nfont > (end - (char *) fs) / sizeof (FcPattern))
+ return FcFalse;
+
+ if (fs->fonts != 0 && !FcIsEncodedOffset(fs->fonts))
+ return FcFalse;
+
+ for (i = 0; i < fs->nfont; i++)
+ {
+ FcPattern *font = FcFontSetFont (fs, i);
+ FcPatternElt *e;
+ FcValueListPtr l;
+ char *last_offset;
+
+ /* TIZEN_ONLY(20171013): Add a condition to FcCacheOffsetsValid() for detecting empty data of cache
+ if ((char *) font < base ||
+ (char *) font > end - sizeof (FcFontSet) ||
+ font->elts_offset < 0 ||
+ font->elts_offset > end - (char *) font ||
+ font->num > (end - (char *) font - font->elts_offset) / sizeof (FcPatternElt))
+ return FcFalse;
+ */
+ if ((char *) font < base ||
+ (char *) font > end - sizeof (FcFontSet) ||
+ font->elts_offset < 0 ||
+ font->elts_offset > end - (char *) font ||
+ font->num > (end - (char *) font - font->elts_offset) / sizeof (FcPatternElt) ||
+ !FcRefIsConst (&font->ref))
+ return FcFalse;
+ /* END */
+
+
+ e = FcPatternElts(font);
+ if (e->values != 0 && !FcIsEncodedOffset(e->values))
+ return FcFalse;
+
+ for (j = 0; j < font->num; j++)
+ {
+ last_offset = (char *) font + font->elts_offset;
+ for (l = FcPatternEltValues(&e[j]); l; l = FcValueListNext(l))
+ {
+ if ((char *) l < last_offset || (char *) l > end - sizeof (*l) ||
+ (l->next != NULL && !FcIsEncodedOffset(l->next)))
+ return FcFalse;
+ last_offset = (char *) l + 1;
+ }
+ }
+ }
+ }
+
+ return FcTrue;
+}
+
+/*
+ * Map a cache file into memory
+ */
+static FcCache *
+FcDirCacheMapFd (FcConfig *config, int fd, struct stat *fd_stat, struct stat *dir_stat)
+{
+ FcCache *cache;
+ FcBool allocated = FcFalse;
+
+ if (fd_stat->st_size > INTPTR_MAX ||
+ fd_stat->st_size < (int) sizeof (FcCache))
+ return NULL;
+ cache = FcCacheFindByStat (fd_stat);
+ if (cache)
+ {
+ if (FcCacheTimeValid (config, cache, dir_stat))
+ return cache;
+ FcDirCacheUnload (cache);
+ cache = NULL;
+ }
+
+ /*
+ * Large cache files are mmap'ed, smaller cache files are read. This
+ * balances the system cost of mmap against per-process memory usage.
+ */
+ if (FcCacheIsMmapSafe (fd) && fd_stat->st_size >= FC_CACHE_MIN_MMAP)
+ {
+#if defined(HAVE_MMAP) || defined(__CYGWIN__)
+ cache = mmap (0, fd_stat->st_size, PROT_READ, MAP_SHARED, fd, 0);
+#if (HAVE_POSIX_FADVISE) && defined(POSIX_FADV_WILLNEED)
+ posix_fadvise (fd, 0, fd_stat->st_size, POSIX_FADV_WILLNEED);
+#endif
+ if (cache == MAP_FAILED)
+ cache = NULL;
+#elif defined(_WIN32)
+ {
+ HANDLE hFileMap;
+
+ cache = NULL;
+ hFileMap = CreateFileMapping((HANDLE) _get_osfhandle(fd), NULL,
+ PAGE_READONLY, 0, 0, NULL);
+ if (hFileMap != NULL)
+ {
+ cache = MapViewOfFile (hFileMap, FILE_MAP_READ, 0, 0,
+ fd_stat->st_size);
+ CloseHandle (hFileMap);
+ }
+ }
#endif
+ }
if (!cache)
{
- cache = malloc (size);
+ cache = malloc (fd_stat->st_size);
if (!cache)
- return FcFalse;
+ return NULL;
- if (read (fd, cache, size) != size)
+ if (read (fd, cache, fd_stat->st_size) != fd_stat->st_size)
{
free (cache);
- return FcFalse;
+ return NULL;
}
allocated = FcTrue;
- }
- if (cache->magic != FC_CACHE_MAGIC ||
- cache->size != size)
+ }
+ if (cache->magic != FC_CACHE_MAGIC_MMAP ||
+ cache->version < FC_CACHE_VERSION_NUMBER ||
+ cache->size != (intptr_t) fd_stat->st_size ||
+ !FcCacheOffsetsValid (cache) ||
+ !FcCacheTimeValid (config, cache, dir_stat) ||
+ !FcCacheInsert (cache, fd_stat))
{
if (allocated)
free (cache);
else
{
#if defined(HAVE_MMAP) || defined(__CYGWIN__)
- munmap (cache, size);
+ munmap (cache, fd_stat->st_size);
#elif defined(_WIN32)
UnmapViewOfFile (cache);
#endif
}
- return FcFalse;
+ return NULL;
}
/* Mark allocated caches so they're freed rather than unmapped */
if (allocated)
- cache->magic = FC_CACHE_MAGIC_COPY;
+ cache->magic = FC_CACHE_MAGIC_ALLOC;
+ return cache;
+}
+
+void
+FcDirCacheReference (FcCache *cache, int nref)
+{
+ FcCacheSkip *skip = FcCacheFindByAddr (cache);
+
+ if (skip)
+ FcRefAdd (&skip->ref, nref);
+}
+
+void
+FcDirCacheUnload (FcCache *cache)
+{
+ FcCacheObjectDereference (cache);
+}
+
+static FcBool
+FcDirCacheMapHelper (FcConfig *config, int fd, struct stat *fd_stat, struct stat *dir_stat, void *closure)
+{
+ FcCache *cache = FcDirCacheMapFd (config, fd, fd_stat, dir_stat);
+
+ if (!cache)
+ return FcFalse;
*((FcCache **) closure) = cache;
return FcTrue;
}
FcCache *
-FcDirCacheMap (const FcChar8 *dir, FcConfig *config, FcChar8 **cache_file)
+FcDirCacheLoad (const FcChar8 *dir, FcConfig *config, FcChar8 **cache_file)
{
FcCache *cache = NULL;
if (!FcDirCacheProcess (config, dir,
- FcDirCacheLoad,
+ FcDirCacheMapHelper,
&cache, cache_file))
return NULL;
+
return cache;
}
-FcBool
-FcDirCacheRead (FcFontSet * set, FcStrSet * dirs,
- const FcChar8 *dir, FcConfig *config)
+FcCache *
+FcDirCacheLoadFile (const FcChar8 *cache_file, struct stat *file_stat)
{
- FcCache *cache;
- int i;
- FcFontSet *cache_set;
- intptr_t *cache_dirs;
- FcPattern **cache_fonts;
+ int fd;
+ FcCache *cache;
+ struct stat my_file_stat;
- cache = FcDirCacheMap (dir, config, NULL);
- if (!cache)
- return FcFalse;
-
- cache_set = FcCacheSet (cache);
- cache_fonts = FcFontSetFonts(cache_set);
- if (FcDebug() & FC_DBG_CACHE)
- printf ("FcDirCacheRead mapped cache for %s (%d fonts %d subdirs)\n",
- dir, cache_set->nfont, cache->dirs_count);
- for (i = 0; i < cache_set->nfont; i++)
- {
- FcPattern *font = FcEncodedOffsetToPtr (cache_set,
- cache_fonts[i],
- FcPattern);
- if (FcDebug() & FC_DBG_CACHEV) {
- printf ("Mapped font %d\n", i);
- FcPatternPrint (font);
- }
- FcFontSetAdd (set, font);
- }
-
- cache_dirs = FcCacheDirs (cache);
- for (i = 0; i < cache->dirs_count; i++)
- FcStrSetAdd (dirs, FcOffsetToPtr (cache_dirs,
- cache_dirs[i],
- FcChar8));
-
- if (config)
- FcConfigAddFontDir (config, (FcChar8 *)dir);
-
- return FcTrue;
+ if (!file_stat)
+ file_stat = &my_file_stat;
+ fd = FcDirCacheOpenFile (cache_file, file_stat);
+ if (fd < 0)
+ return NULL;
+ cache = FcDirCacheMapFd (FcConfigGetCurrent (), fd, file_stat, NULL);
+ close (fd);
+ return cache;
}
-
+
+/*
+ * Validate a cache file by reading the header and checking
+ * the magic number and the size field
+ */
static FcBool
-FcDirCacheValidate (int fd, off_t size, void *closure)
+FcDirCacheValidateHelper (FcConfig *config, int fd, struct stat *fd_stat, struct stat *dir_stat, void *closure FC_UNUSED)
{
FcBool ret = FcTrue;
FcCache c;
- struct stat file_stat;
-
+
if (read (fd, &c, sizeof (FcCache)) != sizeof (FcCache))
ret = FcFalse;
- else if (fstat (fd, &file_stat) < 0)
+ else if (c.magic != FC_CACHE_MAGIC_MMAP)
ret = FcFalse;
- else if (c.magic != FC_CACHE_MAGIC)
+ else if (c.version < FC_CACHE_VERSION_NUMBER)
ret = FcFalse;
- else if (file_stat.st_size != c.size)
+ else if (fd_stat->st_size != c.size)
ret = FcFalse;
+ else if (c.checksum != (int) dir_stat->st_mtime)
+ ret = FcFalse;
+#ifdef HAVE_STRUCT_STAT_ST_MTIM
+ else if (c.checksum_nano != dir_stat->st_mtim.tv_nsec)
+ ret = FcFalse;
+#endif
return ret;
}
static FcBool
FcDirCacheValidConfig (const FcChar8 *dir, FcConfig *config)
{
- return FcDirCacheProcess (config, dir, FcDirCacheValidate, NULL, NULL);
+ return FcDirCacheProcess (config, dir,
+ FcDirCacheValidateHelper,
+ NULL, NULL);
}
FcBool
FcDirCacheValid (const FcChar8 *dir)
{
FcConfig *config;
-
+
config = FcConfigGetCurrent ();
if (!config)
return FcFalse;
return FcDirCacheValidConfig (dir, config);
}
-void
-FcDirCacheUnmap (FcCache *cache)
-{
- if (cache->magic == FC_CACHE_MAGIC_COPY)
- {
- free (cache);
- return;
- }
-#if defined(HAVE_MMAP) || defined(__CYGWIN__)
- munmap (cache, cache->size);
-#elif defined(_WIN32)
- UnmapViewOfFile (cache);
-#endif
-}
-
/*
- * Cache file is:
- *
- * FcCache
- * dir name
- * subdirs
- * FcFontSet
+ * Build a cache structure from the given contents
*/
-
-static FcCache *
-FcDirCacheProduce (FcFontSet *set, const FcChar8 *dir, FcStrSet *dirs)
+FcCache *
+FcDirCacheBuild (FcFontSet *set, const FcChar8 *dir, struct stat *dir_stat, FcStrSet *dirs)
{
FcSerialize *serialize = FcSerializeCreate ();
FcCache *cache;
int i;
- intptr_t cache_offset;
- intptr_t dirs_offset;
FcChar8 *dir_serialize;
intptr_t *dirs_serialize;
FcFontSet *set_serialize;
-
+
if (!serialize)
return NULL;
/*
* Space for cache structure
*/
- cache_offset = FcSerializeReserve (serialize, sizeof (FcCache));
+ FcSerializeReserve (serialize, sizeof (FcCache));
/*
* Directory name
*/
/*
* Subdirs
*/
- dirs_offset = FcSerializeAlloc (serialize, dirs, dirs->num * sizeof (FcChar8 *));
+ FcSerializeAlloc (serialize, dirs, dirs->num * sizeof (FcChar8 *));
for (i = 0; i < dirs->num; i++)
if (!FcStrSerializeAlloc (serialize, dirs->strs[i]))
goto bail1;
*/
if (!FcFontSetSerializeAlloc (serialize, set))
goto bail1;
-
+
/* Serialize layout complete. Now allocate space and fill it */
cache = malloc (serialize->size);
if (!cache)
serialize->linear = cache;
- cache->magic = FC_CACHE_MAGIC;
+ cache->magic = FC_CACHE_MAGIC_ALLOC;
+ cache->version = FC_CACHE_VERSION_NUMBER;
cache->size = serialize->size;
+ cache->checksum = (int) dir_stat->st_mtime;
+#ifdef HAVE_STRUCT_STAT_ST_MTIM
+ cache->checksum_nano = dir_stat->st_mtim.tv_nsec;
+#endif
/*
* Serialize directory name
if (!dir_serialize)
goto bail2;
cache->dir = FcPtrToOffset (cache, dir_serialize);
-
+
/*
* Serialize sub dirs
*/
goto bail2;
cache->dirs = FcPtrToOffset (cache, dirs_serialize);
cache->dirs_count = dirs->num;
- for (i = 0; i < dirs->num; i++)
+ for (i = 0; i < dirs->num; i++)
{
FcChar8 *d_serialize = FcStrSerialize (serialize, dirs->strs[i]);
if (!d_serialize)
goto bail2;
dirs_serialize[i] = FcPtrToOffset (dirs_serialize, d_serialize);
}
-
+
/*
* Serialize font set
*/
cache->set = FcPtrToOffset (cache, set_serialize);
FcSerializeDestroy (serialize);
-
+
+ FcCacheInsert (cache, NULL);
+
return cache;
bail2:
return NULL;
}
-static FcBool
-FcMakeDirectory (const FcChar8 *dir)
+FcCache *
+FcDirCacheRebuild (FcCache *cache, struct stat *dir_stat, FcStrSet *dirs)
{
- FcChar8 *parent;
- FcBool ret;
-
- if (strlen ((char *) dir) == 0)
- return FcFalse;
-
- parent = FcStrDirname (dir);
- if (!parent)
- return FcFalse;
- if (access ((char *) parent, W_OK|X_OK) == 0)
- ret = mkdir ((char *) dir, 0777) == 0;
- else if (access ((char *) parent, F_OK) == -1)
- ret = FcMakeDirectory (parent) && (mkdir ((char *) dir, 0777) == 0);
- else
- ret = FcFalse;
- FcStrFree (parent);
- return ret;
+ FcCache *new;
+ FcFontSet *set = FcFontSetDeserialize (FcCacheSet (cache));
+ const FcChar8 *dir = FcCacheDir (cache);
+
+ new = FcDirCacheBuild (set, dir, dir_stat, dirs);
+ FcFontSetDestroy (set);
+
+ return new;
}
/* write serialized state to the cache file */
FcBool
-FcDirCacheWrite (FcFontSet *set, FcStrSet *dirs, const FcChar8 *dir, FcConfig *config)
+FcDirCacheWrite (FcCache *cache, FcConfig *config)
{
+ FcChar8 *dir = FcCacheDir (cache);
FcChar8 cache_base[CACHEBASE_LEN];
FcChar8 *cache_hashed;
int fd;
FcAtomic *atomic;
- FcCache *cache;
FcStrList *list;
FcChar8 *cache_dir = NULL;
- FcChar8 *test_dir;
+ FcChar8 *test_dir, *d = NULL;
+ FcCacheSkip *skip;
+ struct stat cache_stat;
+ unsigned int magic;
+ int written;
+ const FcChar8 *sysroot = FcConfigGetSysRoot (config);
/*
* Write it to the first directory in the list which is writable
*/
-
+
list = FcStrListCreate (config->cacheDirs);
if (!list)
return FcFalse;
- while ((test_dir = FcStrListNext (list))) {
- if (access ((char *) test_dir, W_OK|X_OK) == 0)
+ while ((test_dir = FcStrListNext (list)))
+ {
+ if (d)
+ FcStrFree (d);
+ if (sysroot)
+ d = FcStrBuildFilename (sysroot, test_dir, NULL);
+ else
+ d = FcStrCopyFilename (test_dir);
+
+ if (access ((char *) d, W_OK) == 0)
{
- cache_dir = test_dir;
+ cache_dir = FcStrCopyFilename (d);
break;
}
else
/*
* If the directory doesn't exist, try to create it
*/
- if (access ((char *) test_dir, F_OK) == -1) {
- if (FcMakeDirectory (test_dir))
+ if (access ((char *) d, F_OK) == -1) {
+ if (FcMakeDirectory (d))
{
- cache_dir = test_dir;
+ cache_dir = FcStrCopyFilename (d);
+ /* Create CACHEDIR.TAG */
+ FcDirCacheCreateTagFile (d);
break;
}
}
+ /*
+ * Otherwise, try making it writable
+ */
+ else if (chmod ((char *) d, 0755) == 0)
+ {
+ cache_dir = FcStrCopyFilename (d);
+ /* Try to create CACHEDIR.TAG too */
+ FcDirCacheCreateTagFile (d);
+ break;
+ }
}
}
+ if (d)
+ FcStrFree (d);
FcStrListDone (list);
if (!cache_dir)
return FcFalse;
FcDirCacheBasename (dir, cache_base);
- cache_hashed = FcStrPlus (cache_dir, cache_base);
+ cache_hashed = FcStrBuildFilename (cache_dir, cache_base, NULL);
if (!cache_hashed)
return FcFalse;
-
- cache = FcDirCacheProduce (set, dir, dirs);
-
- if (!cache)
- goto bail1;
+ FcStrFree (cache_dir);
if (FcDebug () & FC_DBG_CACHE)
printf ("FcDirCacheWriteDir dir \"%s\" file \"%s\"\n",
atomic = FcAtomicCreate ((FcChar8 *)cache_hashed);
if (!atomic)
- goto bail2;
+ goto bail1;
if (!FcAtomicLock (atomic))
goto bail3;
- fd = open((char *)FcAtomicNewFile (atomic), O_RDWR | O_CREAT | O_BINARY, 0666);
+ fd = FcOpen((char *)FcAtomicNewFile (atomic), O_RDWR | O_CREAT | O_BINARY, 0666);
if (fd == -1)
goto bail4;
-
- if (write (fd, cache, cache->size) != cache->size)
+
+ /* Temporarily switch magic to MMAP while writing to file */
+ magic = cache->magic;
+ if (magic != FC_CACHE_MAGIC_MMAP)
+ cache->magic = FC_CACHE_MAGIC_MMAP;
+
+ /*
+ * Write cache contents to file
+ */
+ written = write (fd, cache, cache->size);
+
+ /* Switch magic back */
+ if (magic != FC_CACHE_MAGIC_MMAP)
+ cache->magic = magic;
+
+ if (written != cache->size)
{
perror ("write cache");
goto bail5;
close(fd);
if (!FcAtomicReplaceOrig(atomic))
goto bail4;
- FcStrFree ((FcChar8 *)cache_hashed);
+
+ /* If the file is small, update the cache chain entry such that the
+ * new cache file is not read again. If it's large, we don't do that
+ * such that we reload it, using mmap, which is shared across processes.
+ */
+ if (cache->size < FC_CACHE_MIN_MMAP && FcStat (cache_hashed, &cache_stat))
+ {
+ lock_cache ();
+ if ((skip = FcCacheFindByAddrUnlocked (cache)))
+ {
+ skip->cache_dev = cache_stat.st_dev;
+ skip->cache_ino = cache_stat.st_ino;
+ skip->cache_mtime = cache_stat.st_mtime;
+#ifdef HAVE_STRUCT_STAT_ST_MTIM
+ skip->cache_mtime_nano = cache_stat.st_mtim.tv_nsec;
+#else
+ skip->cache_mtime_nano = 0;
+#endif
+ }
+ unlock_cache ();
+ }
+
+ FcStrFree (cache_hashed);
FcAtomicUnlock (atomic);
FcAtomicDestroy (atomic);
return FcTrue;
FcAtomicUnlock (atomic);
bail3:
FcAtomicDestroy (atomic);
- bail2:
- free (cache);
bail1:
- FcStrFree ((FcChar8 *)cache_hashed);
+ FcStrFree (cache_hashed);
return FcFalse;
}
+FcBool
+FcDirCacheClean (const FcChar8 *cache_dir, FcBool verbose)
+{
+ DIR *d;
+ struct dirent *ent;
+ FcChar8 *dir;
+ FcBool ret = FcTrue;
+ FcBool remove;
+ FcCache *cache;
+ struct stat target_stat;
+ const FcChar8 *sysroot;
+
+ /* FIXME: this API needs to support non-current FcConfig */
+ sysroot = FcConfigGetSysRoot (NULL);
+ if (sysroot)
+ dir = FcStrBuildFilename (sysroot, cache_dir, NULL);
+ else
+ dir = FcStrCopyFilename (cache_dir);
+ if (!dir)
+ {
+ fprintf (stderr, "Fontconfig error: %s: out of memory\n", cache_dir);
+ return FcFalse;
+ }
+ if (access ((char *) dir, W_OK) != 0)
+ {
+ if (verbose || FcDebug () & FC_DBG_CACHE)
+ printf ("%s: not cleaning %s cache directory\n", dir,
+ access ((char *) dir, F_OK) == 0 ? "unwritable" : "non-existent");
+ goto bail0;
+ }
+ if (verbose || FcDebug () & FC_DBG_CACHE)
+ printf ("%s: cleaning cache directory\n", dir);
+ d = opendir ((char *) dir);
+ if (!d)
+ {
+ perror ((char *) dir);
+ ret = FcFalse;
+ goto bail0;
+ }
+ while ((ent = readdir (d)))
+ {
+ FcChar8 *file_name;
+ const FcChar8 *target_dir;
+
+ if (ent->d_name[0] == '.')
+ continue;
+ /* skip cache files for different architectures and */
+ /* files which are not cache files at all */
+ if (strlen(ent->d_name) != 32 + strlen ("-" FC_ARCHITECTURE FC_CACHE_SUFFIX) ||
+ strcmp(ent->d_name + 32, "-" FC_ARCHITECTURE FC_CACHE_SUFFIX))
+ continue;
+
+ file_name = FcStrBuildFilename (dir, (FcChar8 *)ent->d_name, NULL);
+ if (!file_name)
+ {
+ fprintf (stderr, "Fontconfig error: %s: allocation failure\n", dir);
+ ret = FcFalse;
+ break;
+ }
+ remove = FcFalse;
+ cache = FcDirCacheLoadFile (file_name, NULL);
+ if (!cache)
+ {
+ if (verbose || FcDebug () & FC_DBG_CACHE)
+ printf ("%s: invalid cache file: %s\n", dir, ent->d_name);
+ remove = FcTrue;
+ }
+ else
+ {
+ FcChar8 *s;
+
+ target_dir = FcCacheDir (cache);
+ if (sysroot)
+ s = FcStrBuildFilename (sysroot, target_dir, NULL);
+ else
+ s = FcStrdup (target_dir);
+ if (stat ((char *) s, &target_stat) < 0)
+ {
+ if (verbose || FcDebug () & FC_DBG_CACHE)
+ printf ("%s: %s: missing directory: %s \n",
+ dir, ent->d_name, s);
+ remove = FcTrue;
+ }
+ FcDirCacheUnload (cache);
+ FcStrFree (s);
+ }
+ if (remove)
+ {
+ if (unlink ((char *) file_name) < 0)
+ {
+ perror ((char *) file_name);
+ ret = FcFalse;
+ }
+ }
+ FcStrFree (file_name);
+ }
+
+ closedir (d);
+ bail0:
+ FcStrFree (dir);
+
+ return ret;
+}
+
+int
+FcDirCacheLock (const FcChar8 *dir,
+ FcConfig *config)
+{
+ FcChar8 *cache_hashed = NULL;
+ FcChar8 cache_base[CACHEBASE_LEN];
+ FcStrList *list;
+ FcChar8 *cache_dir;
+ const FcChar8 *sysroot = FcConfigGetSysRoot (config);
+ int fd = -1;
+
+ FcDirCacheBasename (dir, cache_base);
+ list = FcStrListCreate (config->cacheDirs);
+ if (!list)
+ return -1;
+
+ while ((cache_dir = FcStrListNext (list)))
+ {
+ if (sysroot)
+ cache_hashed = FcStrBuildFilename (sysroot, cache_dir, cache_base, NULL);
+ else
+ cache_hashed = FcStrBuildFilename (cache_dir, cache_base, NULL);
+ if (!cache_hashed)
+ break;
+ fd = FcOpen ((const char *)cache_hashed, O_RDWR);
+ FcStrFree (cache_hashed);
+ /* No caches in that directory. simply retry with another one */
+ if (fd != -1)
+ {
+#if defined(_WIN32)
+ if (_locking (fd, _LK_LOCK, 1) == -1)
+ goto bail;
+#else
+ struct flock fl;
+
+ fl.l_type = F_WRLCK;
+ fl.l_whence = SEEK_SET;
+ fl.l_start = 0;
+ fl.l_len = 0;
+ fl.l_pid = getpid ();
+ if (fcntl (fd, F_SETLKW, &fl) == -1)
+ goto bail;
+#endif
+ break;
+ }
+ }
+ FcStrListDone (list);
+ return fd;
+bail:
+ FcStrListDone (list);
+ if (fd != -1)
+ close (fd);
+ return -1;
+}
+
+void
+FcDirCacheUnlock (int fd)
+{
+ if (fd != -1)
+ {
+#if defined(_WIN32)
+ _locking (fd, _LK_UNLCK, 1);
+#else
+ struct flock fl;
+
+ fl.l_type = F_UNLCK;
+ fl.l_whence = SEEK_SET;
+ fl.l_start = 0;
+ fl.l_len = 0;
+ fl.l_pid = getpid ();
+ fcntl (fd, F_SETLK, &fl);
+#endif
+ close (fd);
+ }
+}
+
+/*
+ * Hokey little macro trick to permit the definitions of C functions
+ * with the same name as CPP macros
+ */
+#define args1(x) (x)
+#define args2(x,y) (x,y)
+
+const FcChar8 *
+FcCacheDir args1(const FcCache *c)
+{
+ return FcCacheDir (c);
+}
+
+FcFontSet *
+FcCacheCopySet args1(const FcCache *c)
+{
+ FcFontSet *old = FcCacheSet (c);
+ FcFontSet *new = FcFontSetCreate ();
+ int i;
+
+ if (!new)
+ return NULL;
+ for (i = 0; i < old->nfont; i++)
+ {
+ FcPattern *font = FcFontSetFont (old, i);
+
+ FcPatternReference (font);
+ if (!FcFontSetAdd (new, font))
+ {
+ FcFontSetDestroy (new);
+ return NULL;
+ }
+ }
+ return new;
+}
+
+const FcChar8 *
+FcCacheSubdir args2(const FcCache *c, int i)
+{
+ return FcCacheSubdir (c, i);
+}
+
+int
+FcCacheNumSubdir args1(const FcCache *c)
+{
+ return c->dirs_count;
+}
+
+int
+FcCacheNumFont args1(const FcCache *c)
+{
+ return FcCacheSet(c)->nfont;
+}
+
/*
* This code implements the MD5 message-digest algorithm.
* The algorithm is due to Ron Rivest. This code was
* Update context to reflect the concatenation of another buffer full
* of bytes.
*/
-static void MD5Update(struct MD5Context *ctx, unsigned char *buf, unsigned len)
+static void MD5Update(struct MD5Context *ctx, const unsigned char *buf, unsigned len)
{
FcChar32 t;
}
/*
- * Final wrapup - pad to 64-byte boundary with the bit pattern
+ * Final wrapup - pad to 64-byte boundary with the bit pattern
* 1 0* (64-bit count of bits processed, MSB-first)
*/
static void MD5Final(unsigned char digest[16], struct MD5Context *ctx)
MD5Transform(ctx->buf, (FcChar32 *) ctx->in);
byteReverse((unsigned char *) ctx->buf, 4);
memcpy(digest, ctx->buf, 16);
- memset(ctx, 0, sizeof(ctx)); /* In case it's sensitive */
+ memset(ctx, 0, sizeof(*ctx)); /* In case it's sensitive */
}
buf[2] += c;
buf[3] += d;
}
+
+FcBool
+FcDirCacheCreateTagFile (const FcChar8 *cache_dir)
+{
+ FcChar8 *cache_tag;
+ int fd;
+ FILE *fp;
+ FcAtomic *atomic;
+ static const FcChar8 cache_tag_contents[] =
+ "Signature: 8a477f597d28d172789f06886806bc55\n"
+ "# This file is a cache directory tag created by fontconfig.\n"
+ "# For information about cache directory tags, see:\n"
+ "# http://www.brynosaurus.com/cachedir/\n";
+ static size_t cache_tag_contents_size = sizeof (cache_tag_contents) - 1;
+ FcBool ret = FcFalse;
+
+ if (!cache_dir)
+ return FcFalse;
+
+ if (access ((char *) cache_dir, W_OK) == 0)
+ {
+ /* Create CACHEDIR.TAG */
+ cache_tag = FcStrBuildFilename (cache_dir, "CACHEDIR.TAG", NULL);
+ if (!cache_tag)
+ return FcFalse;
+ atomic = FcAtomicCreate ((FcChar8 *)cache_tag);
+ if (!atomic)
+ goto bail1;
+ if (!FcAtomicLock (atomic))
+ goto bail2;
+ fd = FcOpen((char *)FcAtomicNewFile (atomic), O_RDWR | O_CREAT, 0644);
+ if (fd == -1)
+ goto bail3;
+ fp = fdopen(fd, "wb");
+ if (fp == NULL)
+ goto bail3;
+
+ fwrite(cache_tag_contents, cache_tag_contents_size, sizeof (FcChar8), fp);
+ fclose(fp);
+
+ if (!FcAtomicReplaceOrig(atomic))
+ goto bail3;
+
+ ret = FcTrue;
+ bail3:
+ FcAtomicUnlock (atomic);
+ bail2:
+ FcAtomicDestroy (atomic);
+ bail1:
+ FcStrFree (cache_tag);
+ }
+
+ if (FcDebug () & FC_DBG_CACHE)
+ {
+ if (ret)
+ printf ("Created CACHEDIR.TAG at %s\n", cache_dir);
+ else
+ printf ("Unable to create CACHEDIR.TAG at %s\n", cache_dir);
+ }
+
+ return ret;
+}
+
+void
+FcCacheCreateTagFile (const FcConfig *config)
+{
+ FcChar8 *cache_dir = NULL, *d = NULL;
+ FcStrList *list;
+ const FcChar8 *sysroot = FcConfigGetSysRoot (config);
+
+ list = FcConfigGetCacheDirs (config);
+ if (!list)
+ return;
+
+ while ((cache_dir = FcStrListNext (list)))
+ {
+ if (d)
+ FcStrFree (d);
+ if (sysroot)
+ d = FcStrBuildFilename (sysroot, cache_dir, NULL);
+ else
+ d = FcStrCopyFilename (cache_dir);
+ if (FcDirCacheCreateTagFile (d))
+ break;
+ }
+ if (d)
+ FcStrFree (d);
+ FcStrListDone (list);
+}
+
+#define __fccache__
+#include "fcaliastail.h"
+#undef __fccache__
projects / platform / upstream / fontconfig.git / blobdiff