#include <fcntl.h>
#include <dirent.h>
#include <string.h>
+#include <limits.h>
#include <sys/types.h>
#include <sys/stat.h>
#include <assert.h>
# include <unistd.h>
# include <sys/mman.h>
#endif
+#if defined(_WIN32)
+#include <sys/locking.h>
+#endif
#ifndef O_BINARY
#define O_BINARY 0
*/
static FcBool
FcDirCacheProcess (FcConfig *config, const FcChar8 *dir,
- FcBool (*callback) (int fd, struct stat *fd_stat,
+ 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 (FcStatChecksum (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)))
{
- const FcChar8 *sysroot = FcConfigGetSysRoot (config);
FcChar8 *cache_hashed;
if (sysroot)
break;
fd = FcDirCacheOpenFile (cache_hashed, &file_stat);
if (fd >= 0) {
- ret = (*callback) (fd, &file_stat, &dir_stat, closure);
+ ret = (*callback) (config, fd, &file_stat, &dir_stat, closure);
close (fd);
if (ret)
{
dev_t cache_dev;
ino_t cache_ino;
time_t cache_mtime;
+ long cache_mtime_nano;
FcCacheSkip *next[1];
};
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;
}
/*
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;
}
static FcBool
-FcCacheTimeValid (FcCache *cache, struct stat *dir_stat)
+FcCacheTimeValid (FcConfig *config, FcCache *cache, struct stat *dir_stat)
{
struct stat dir_static;
+ FcBool fnano = FcTrue;
if (!dir_stat)
{
- if (FcStatChecksum (FcCacheDir (cache), &dir_static) < 0)
+ 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)
+ {
+ 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);
- return 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 (int fd, struct stat *fd_stat, struct stat *dir_stat)
+FcDirCacheMapFd (FcConfig *config, int fd, struct stat *fd_stat, struct stat *dir_stat)
{
FcCache *cache;
FcBool allocated = FcFalse;
- if (fd_stat->st_size < (int) sizeof (FcCache))
+ if (fd_stat->st_size > INTPTR_MAX ||
+ fd_stat->st_size < (int) sizeof (FcCache))
return NULL;
cache = FcCacheFindByStat (fd_stat);
if (cache)
{
- if (FcCacheTimeValid (cache, dir_stat))
+ if (FcCacheTimeValid (config, cache, dir_stat))
return cache;
FcDirCacheUnload (cache);
cache = NULL;
allocated = FcTrue;
}
if (cache->magic != FC_CACHE_MAGIC_MMAP ||
- cache->version < FC_CACHE_CONTENT_VERSION ||
+ cache->version < FC_CACHE_VERSION_NUMBER ||
cache->size != (intptr_t) fd_stat->st_size ||
- !FcCacheTimeValid (cache, dir_stat) ||
+ !FcCacheOffsetsValid (cache) ||
+ !FcCacheTimeValid (config, cache, dir_stat) ||
!FcCacheInsert (cache, fd_stat))
{
if (allocated)
}
static FcBool
-FcDirCacheMapHelper (int fd, struct stat *fd_stat, struct stat *dir_stat, void *closure)
+FcDirCacheMapHelper (FcConfig *config, int fd, struct stat *fd_stat, struct stat *dir_stat, void *closure)
{
- FcCache *cache = FcDirCacheMapFd (fd, fd_stat, dir_stat);
+ FcCache *cache = FcDirCacheMapFd (config, fd, fd_stat, dir_stat);
if (!cache)
return FcFalse;
FcDirCacheMapHelper,
&cache, cache_file))
return NULL;
+
return cache;
}
fd = FcDirCacheOpenFile (cache_file, file_stat);
if (fd < 0)
return NULL;
- cache = FcDirCacheMapFd (fd, file_stat, NULL);
+ cache = FcDirCacheMapFd (FcConfigGetCurrent (), fd, file_stat, NULL);
close (fd);
return cache;
}
* the magic number and the size field
*/
static FcBool
-FcDirCacheValidateHelper (int fd, struct stat *fd_stat, struct stat *dir_stat, void *closure FC_UNUSED)
+FcDirCacheValidateHelper (FcConfig *config, int fd, struct stat *fd_stat, struct stat *dir_stat, void *closure FC_UNUSED)
{
FcBool ret = FcTrue;
FcCache c;
ret = FcFalse;
else if (c.magic != FC_CACHE_MAGIC_MMAP)
ret = FcFalse;
- else if (c.version < FC_CACHE_CONTENT_VERSION)
+ else if (c.version < FC_CACHE_VERSION_NUMBER)
ret = FcFalse;
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;
}
serialize->linear = cache;
cache->magic = FC_CACHE_MAGIC_ALLOC;
- cache->version = FC_CACHE_CONTENT_VERSION;
+ 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
return NULL;
}
+FcCache *
+FcDirCacheRebuild (FcCache *cache, struct stat *dir_stat, FcStrSet *dirs)
+{
+ 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 (FcCache *cache, FcConfig *config)
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 ();
}
}
else
{
+ FcChar8 *s;
+
target_dir = FcCacheDir (cache);
- if (stat ((char *) target_dir, &target_stat) < 0)
+ 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, target_dir);
+ dir, ent->d_name, s);
remove = FcTrue;
}
FcDirCacheUnload (cache);
+ FcStrFree (s);
}
if (remove)
{
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
projects / platform / upstream / fontconfig.git / blobdiff