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Workaround another race condition issue 

See https://bugzilla.redhat.com/show_bug.cgi?id=921706
This commit is contained in:
Akira TAGOH 2014-06-05 19:06:02 +09:00
parent 58acd993cb
commit f44bfad235
3 changed files with 53 additions and 8 deletions
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24
src/fccache.c
View File

@ -545,6 +545,26 @@ FcCacheTimeValid (FcCache *cache, struct stat *dir_stat)
return cache->checksum == (int) dir_stat->st_mtime;
}
static FcBool
FcCacheDirsValid (FcCache *cache)
{
FcStrSet *dirs = FcStrSetCreate ();
FcBool ret = FcFalse;
if (!dirs)
goto bail;
if (!FcDirScanOnly (dirs, FcCacheDir (cache)))
goto bail1;
ret = cache->dirs_count == dirs->num;
if (FcDebug () & FC_DBG_CACHE)
printf ("%s: cache: %d, fs: %d\n", FcCacheDir (cache), cache->dirs_count, dirs->num);
bail1:
FcStrSetDestroy (dirs);
bail:
return ret;
}
/*
* Map a cache file into memory
*/
@ -559,7 +579,8 @@ FcDirCacheMapFd (int fd, struct stat *fd_stat, struct stat *dir_stat)
cache = FcCacheFindByStat (fd_stat);
if (cache)
{
if (FcCacheTimeValid (cache, dir_stat))
if (FcCacheTimeValid (cache, dir_stat) &&
FcCacheDirsValid (cache))
return cache;
FcDirCacheUnload (cache);
cache = NULL;
@ -611,6 +632,7 @@ FcDirCacheMapFd (int fd, struct stat *fd_stat, struct stat *dir_stat)
cache->version < FC_CACHE_CONTENT_VERSION ||
cache->size != (intptr_t) fd_stat->st_size ||
!FcCacheTimeValid (cache, dir_stat) ||
!FcCacheDirsValid (cache) ||
!FcCacheInsert (cache, fd_stat))
{
if (allocated)

28
src/fcdir.c
View File

@ -164,7 +164,8 @@ FcDirScanConfig (FcFontSet *set,
FcBlanks *blanks,
const FcChar8 *dir,
FcBool force, /* XXX unused */
FcConfig *config)
FcConfig *config,
FcBool scanOnly)
{
DIR *d;
struct dirent *e;
@ -180,7 +181,7 @@ FcDirScanConfig (FcFontSet *set,
if (!set && !dirs)
return FcTrue;
if (!blanks)
if (!blanks && !scanOnly)
blanks = FcConfigGetBlanks (config);
/* freed below */
@ -233,7 +234,17 @@ FcDirScanConfig (FcFontSet *set,
* Scan file files to build font patterns
*/
for (i = 0; i < files->num; i++)
{
if (scanOnly)
{
if (FcFileIsDir (files->strs[i]))
FcStrSetAdd (dirs, files->strs[i]);
}
else
{
FcFileScanConfig (set, dirs, blanks, files->strs[i], config);
}
}
bail2:
FcStrSetDestroy (files);
@ -257,7 +268,14 @@ FcDirScan (FcFontSet *set,
if (cache || !force)
return FcFalse;
return FcDirScanConfig (set, dirs, blanks, dir, force, FcConfigGetCurrent ());
return FcDirScanConfig (set, dirs, blanks, dir, force, FcConfigGetCurrent (), FcFalse);
}
FcBool
FcDirScanOnly (FcStrSet *dirs,
const FcChar8 *dir)
{
return FcDirScanConfig (NULL, dirs, NULL, dir, FcTrue, NULL, FcTrue);
}
/*
@ -288,7 +306,7 @@ FcDirCacheScan (const FcChar8 *dir, FcConfig *config)
/*
* Scan the dir
*/
if (!FcDirScanConfig (set, dirs, NULL, dir, FcTrue, config))
if (!FcDirScanConfig (set, dirs, NULL, dir, FcTrue, config, FcFalse))
goto bail2;
/*
@ -330,7 +348,7 @@ FcDirCacheRescan (const FcChar8 *dir, FcConfig *config)
/*
* Scan the dir
*/
if (!FcDirScanConfig (NULL, dirs, NULL, dir, FcTrue, config))
if (!FcDirScanConfig (NULL, dirs, NULL, dir, FcTrue, config, FcFalse))
goto bail1;
/*
* Rebuild the cache object

7
src/fcint.h
View File

@ -849,7 +849,12 @@ FcDirScanConfig (FcFontSet *set,
FcBlanks *blanks,
const FcChar8 *dir,
FcBool force,
FcConfig *config);
FcConfig *config,
FcBool scanOnly);
FcPrivate FcBool
FcDirScanOnly (FcStrSet *dirs,
const FcChar8 *dir);
/* fcfont.c */
FcPrivate int