* TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR
* PERFORMANCE OF THIS SOFTWARE.
*/
-
#include "fcint.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)
-# define _WIN32_WINNT 0x0500
-# include <windows.h>
+#endif
+#if defined(_WIN32)
+#include <sys/locking.h>
#endif
#ifndef O_BINARY
#define CACHEBASE_LEN (1 + 32 + 1 + sizeof (FC_ARCHITECTURE) + sizeof (FC_CACHE_SUFFIX))
-#ifdef _WIN32
-
-#include <windows.h>
-
-#ifdef __GNUC__
-typedef long long INT64;
-#define EPOCH_OFFSET 11644473600ll
-#else
-#define EPOCH_OFFSET 11644473600i64
-typedef __int64 INT64;
-#endif
-
-/* Workaround for problems in the stat() in the Microsoft C library:
- *
- * 1) stat() uses FindFirstFile() to get the file
- * attributes. Unfortunately this API doesn't return correct values
- * for modification time of a directory until some time after a file
- * or subdirectory has been added to the directory. (This causes
- * run-test.sh to fail, for instance.) GetFileAttributesEx() is
- * better, it returns the updated timestamp right away.
- *
- * 2) stat() does some strange things related to backward
- * compatibility with the local time timestamps on FAT volumes and
- * daylight saving time. This causes problems after the switches
- * to/from daylight saving time. See
- * http://bugzilla.gnome.org/show_bug.cgi?id=154968 , especially
- * comment #30, and http://www.codeproject.com/datetime/dstbugs.asp .
- * We don't need any of that, FAT and Win9x are as good as dead. So
- * just use the UTC timestamps from NTFS, converted to the Unix epoch.
- */
-
-int
-FcStat (const FcChar8 *file, struct stat *statb)
+static FcBool
+FcCacheIsMmapSafe (int fd)
{
- WIN32_FILE_ATTRIBUTE_DATA wfad;
- char full_path_name[MAX_PATH];
- char *basename;
- DWORD rc;
+ enum {
+ MMAP_NOT_INITIALIZED = 0,
+ MMAP_USE,
+ MMAP_DONT_USE,
+ MMAP_CHECK_FS,
+ } status;
+ static void *static_status;
- if (!GetFileAttributesEx (file, GetFileExInfoStandard, &wfad))
- return -1;
-
- statb->st_dev = 0;
-
- /* Calculate a pseudo inode number as a hash of the full path name.
- * Call GetLongPathName() to get the spelling of the path name as it
- * is on disk.
- */
- rc = GetFullPathName (file, sizeof (full_path_name), full_path_name, &basename);
- if (rc == 0 || rc > sizeof (full_path_name))
- return -1;
-
- rc = GetLongPathName (full_path_name, full_path_name, sizeof (full_path_name));
- statb->st_ino = FcStringHash (full_path_name);
+ status = (intptr_t) fc_atomic_ptr_get (&static_status);
- statb->st_mode = _S_IREAD | _S_IWRITE;
- statb->st_mode |= (statb->st_mode >> 3) | (statb->st_mode >> 6);
+ 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 (wfad.dwFileAttributes & FILE_ATTRIBUTE_DIRECTORY)
- statb->st_mode |= _S_IFDIR;
+ if (status == MMAP_CHECK_FS)
+ return FcIsFsMmapSafe (fd);
else
- statb->st_mode |= _S_IFREG;
-
- statb->st_nlink = 1;
- statb->st_uid = statb->st_gid = 0;
- statb->st_rdev = 0;
-
- if (wfad.nFileSizeHigh > 0)
- return -1;
- statb->st_size = wfad.nFileSizeLow;
+ return status == MMAP_USE;
- statb->st_atime = (*(INT64 *)&wfad.ftLastAccessTime)/10000000 - EPOCH_OFFSET;
- statb->st_mtime = (*(INT64 *)&wfad.ftLastWriteTime)/10000000 - EPOCH_OFFSET;
- statb->st_ctime = statb->st_mtime;
-
- return 0;
}
-#else
-
-int
-FcStat (const FcChar8 *file, struct stat *statb)
-{
- return stat ((char *) file, statb);
-}
-
-#endif
-
static const char bin2hex[] = { '0', '1', '2', '3',
'4', '5', '6', '7',
'8', '9', 'a', 'b',
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);
if (FcStat (cache_file, file_stat) < 0)
return -1;
#endif
- fd = open((char *) cache_file, O_RDONLY | O_BINARY);
+ fd = FcOpen((char *) cache_file, O_RDONLY | O_BINARY);
if (fd < 0)
return fd;
#ifndef _WIN32
*/
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 (FcStat (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 = 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)
{
struct _FcCacheSkip {
FcCache *cache;
- int ref;
+ FcRef ref;
intptr_t size;
dev_t cache_dev;
ino_t cache_ino;
time_t cache_mtime;
+ long cache_mtime_nano;
FcCacheSkip *next[1];
};
#define FC_CACHE_MAX_LEVEL 16
+/* Protected by cache_lock below */
static FcCacheSkip *fcCacheChains[FC_CACHE_MAX_LEVEL];
static int fcCacheMaxLevel;
-#if HAVE_RANDOM
-# define FcRandom() random()
-#else
-# if HAVE_LRAND48
-# define FcRandom() lrand48()
-# else
-# if HAVE_RAND
-# define FcRandom() rand()
-# endif
-# endif
-#endif
+
+static FcMutex *cache_lock;
+
+static void
+lock_cache (void)
+{
+ 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
FcCacheSkip *s, **next;
int i, level;
+ lock_cache ();
+
/*
* Find links along each chain
*/
s->cache = cache;
s->size = cache->size;
- s->ref = 1;
+ 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;
}
/*
s->next[i] = *update[i];
*update[i] = s;
}
+
+ unlock_cache ();
return FcTrue;
}
static FcCacheSkip *
-FcCacheFindByAddr (void *object)
+FcCacheFindByAddrUnlocked (void *object)
{
int i;
FcCacheSkip **next = fcCacheChains;
FcCacheSkip *s;
+ if (!object)
+ return NULL;
+
/*
* Walk chain pointers one level at a time
*/
return NULL;
}
+static FcCacheSkip *
+FcCacheFindByAddr (void *object)
+{
+ FcCacheSkip *ret;
+ lock_cache ();
+ ret = FcCacheFindByAddrUnlocked (object);
+ unlock_cache ();
+ return ret;
+}
+
static void
-FcCacheRemove (FcCache *cache)
+FcCacheRemoveUnlocked (FcCache *cache)
{
FcCacheSkip **update[FC_CACHE_MAX_LEVEL];
FcCacheSkip *s, **next;
{
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)
{
- s->ref++;
+#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
-FcDirCacheDispose (FcCache *cache)
+FcDirCacheDisposeUnlocked (FcCache *cache)
{
+ FcCacheRemoveUnlocked (cache);
+
switch (cache->magic) {
case FC_CACHE_MAGIC_ALLOC:
free (cache);
#endif
break;
}
- FcCacheRemove (cache);
}
void
FcCacheSkip *skip = FcCacheFindByAddr (object);
if (skip)
- skip->ref++;
+ FcRefInc (&skip->ref);
}
void
FcCacheObjectDereference (void *object)
{
- FcCacheSkip *skip = FcCacheFindByAddr (object);
+ FcCacheSkip *skip;
+ lock_cache ();
+ skip = FcCacheFindByAddrUnlocked (object);
if (skip)
{
- skip->ref--;
- if (skip->ref <= 0)
- FcDirCacheDispose (skip->cache);
+ if (FcRefDec (&skip->ref) == 1)
+ FcDirCacheDisposeUnlocked (skip->cache);
}
+ unlock_cache ();
}
void
for (i = 0; i < FC_CACHE_MAX_LEVEL; i++)
assert (fcCacheChains[i] == NULL);
assert (fcCacheMaxLevel == 0);
+
+ free_lock ();
}
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 (FcStat (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 time %d dir time %d\n",
- FcCacheDir (cache), cache->mtime, (int) dir_stat->st_mtime);
- return cache->mtime == (int) dir_stat->st_mtime;
+ 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 (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 < 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;
}
/*
- * Lage cache files are mmap'ed, smaller cache files are read. This
+ * Large cache files are mmap'ed, smaller cache files are read. This
* balances the system cost of mmap against per-process memory usage.
*/
- if (fd_stat->st_size >= FC_CACHE_MIN_MMAP)
+ 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)
allocated = FcTrue;
}
if (cache->magic != FC_CACHE_MAGIC_MMAP ||
- cache->version < FC_CACHE_CONTENT_VERSION ||
- cache->size != fd_stat->st_size ||
- !FcCacheTimeValid (cache, dir_stat) ||
+ 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)
FcCacheSkip *skip = FcCacheFindByAddr (cache);
if (skip)
- skip->ref += nref;
+ FcRefAdd (&skip->ref, nref);
}
void
}
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)
+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.mtime != (int) dir_stat->st_mtime)
+ 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->mtime = (int) dir_stat->st_mtime;
+ 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;
}
-
-#ifdef _WIN32
-#define mkdir(path,mode) _mkdir(path)
-#endif
-
-static FcBool
-FcMakeDirectory (const FcChar8 *dir)
+FcCache *
+FcDirCacheRebuild (FcCache *cache, struct stat *dir_stat, FcStrSet *dirs)
{
- FcChar8 *parent;
- FcBool ret;
+ FcCache *new;
+ FcFontSet *set = FcFontSetDeserialize (FcCacheSet (cache));
+ const FcChar8 *dir = FcCacheDir (cache);
- if (strlen ((char *) dir) == 0)
- return FcFalse;
+ new = FcDirCacheBuild (set, dir, dir_stat, dirs);
+ FcFontSetDestroy (set);
- parent = FcStrDirname (dir);
- if (!parent)
- return FcFalse;
- if (access ((char *) parent, F_OK) == 0)
- ret = mkdir ((char *) dir, 0755) == 0 && chmod ((char *) dir, 0755) == 0;
- else if (access ((char *) parent, F_OK) == -1)
- ret = FcMakeDirectory (parent) && (mkdir ((char *) dir, 0755) == 0) && chmod ((char *) dir, 0755) == 0;
- else
- ret = FcFalse;
- FcStrFree (parent);
- return ret;
+ return new;
}
/* write serialized state to the cache file */
FcAtomic *atomic;
FcStrList *list;
FcChar8 *cache_dir = NULL;
- FcChar8 *test_dir;
+ FcChar8 *test_dir, *d = NULL;
FcCacheSkip *skip;
struct stat cache_stat;
- int magic;
+ 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 *) test_dir, 0755) == 0)
+ else if (chmod ((char *) d, 0755) == 0)
{
- cache_dir = test_dir;
+ 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;
+ FcStrFree (cache_dir);
if (FcDebug () & FC_DBG_CACHE)
printf ("FcDirCacheWriteDir dir \"%s\" file \"%s\"\n",
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;
* 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 &&
- (skip = FcCacheFindByAddr (cache)) &&
- FcStat (cache_hashed, &cache_stat))
+ if (cache->size < FC_CACHE_MIN_MMAP && FcStat (cache_hashed, &cache_stat))
{
- skip->cache_dev = cache_stat.st_dev;
- skip->cache_ino = cache_stat.st_ino;
- skip->cache_mtime = cache_stat.st_mtime;
+ 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);
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
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