X-Git-Url: https://git.wh0rd.org/?a=blobdiff_plain;f=src%2Ffccache.c;h=2d4a4377ba42145cc5ca6b25239db1dc96f1e197;hb=HEAD;hp=c43609ccdd735f734fb2341cfbca813a8549dbbe;hpb=238489030a64fa883f8f9fc3d73247b7f7257899;p=fontconfig.git diff --git a/src/fccache.c b/src/fccache.c index c43609c..2d4a437 100644 --- a/src/fccache.c +++ b/src/fccache.c @@ -6,15 +6,15 @@ * 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 @@ -22,7 +22,7 @@ */ #include "fcint.h" -#include "../fc-arch/fcarch.h" +#include "fcarch.h" #include #include #include @@ -33,6 +33,7 @@ # include # include #elif defined(_WIN32) +# define _WIN32_WINNT 0x0500 # include #endif @@ -40,6 +41,7 @@ #define O_BINARY 0 #endif + struct MD5Context { FcChar32 buf[4]; FcChar32 bits[2]; @@ -53,6 +55,94 @@ static void MD5Transform(FcChar32 buf[4], FcChar32 in[16]); #define CACHEBASE_LEN (1 + 32 + 1 + sizeof (FC_ARCHITECTURE) + sizeof (FC_CACHE_SUFFIX)) +#ifdef _WIN32 + +#include + +#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 char *file, struct stat *statb) +{ + WIN32_FILE_ATTRIBUTE_DATA wfad; + char full_path_name[MAX_PATH]; + char *basename; + DWORD rc; + + 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); + + statb->st_mode = _S_IREAD | _S_IWRITE; + statb->st_mode |= (statb->st_mode >> 3) | (statb->st_mode >> 6); + + if (wfad.dwFileAttributes & FILE_ATTRIBUTE_DIRECTORY) + statb->st_mode |= _S_IFDIR; + 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; + + 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 char *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', @@ -118,24 +208,30 @@ FcDirCacheOpenFile (const FcChar8 *cache_file, struct stat *file_stat) { int fd; +#ifdef _WIN32 + if (FcStat (cache_file, file_stat) < 0) + return -1; +#endif fd = open((char *) cache_file, O_RDONLY | O_BINARY); if (fd < 0) return fd; +#ifndef _WIN32 if (fstat (fd, file_stat) < 0) { close (fd); return -1; } +#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, +FcDirCacheProcess (FcConfig *config, const FcChar8 *dir, FcBool (*callback) (int fd, struct stat *fd_stat, struct stat *dir_stat, void *closure), void *closure, FcChar8 **cache_file_ret) @@ -147,7 +243,7 @@ FcDirCacheProcess (FcConfig *config, const FcChar8 *dir, struct stat file_stat, dir_stat; FcBool ret = FcFalse; - if (stat ((char *) dir, &dir_stat) < 0) + if (FcStat (dir, &dir_stat) < 0) return FcFalse; FcDirCacheBasename (dir, cache_base); @@ -177,7 +273,7 @@ FcDirCacheProcess (FcConfig *config, const FcChar8 *dir, FcStrFree (cache_hashed); } FcStrListDone (list); - + return ret; } @@ -276,7 +372,7 @@ FcCacheInsert (FcCache *cache, struct stat *cache_stat) update[fcCacheMaxLevel] = &fcCacheChains[fcCacheMaxLevel]; fcCacheMaxLevel = level; } - + s = malloc (sizeof (FcCacheSkip) + (level - 1) * sizeof (FcCacheSkip *)); if (!s) return FcFalse; @@ -296,7 +392,7 @@ FcCacheInsert (FcCache *cache, struct stat *cache_stat) s->cache_ino = 0; s->cache_mtime = 0; } - + /* * Insert into all fcCacheChains */ @@ -429,7 +525,7 @@ FcCacheTimeValid (FcCache *cache, struct stat *dir_stat) if (!dir_stat) { - if (stat ((const char *) FcCacheDir (cache), &dir_static) < 0) + if (FcStat (FcCacheDir (cache), &dir_static) < 0) return FcFalse; dir_stat = &dir_static; } @@ -452,7 +548,13 @@ FcDirCacheMapFd (int fd, struct stat *fd_stat, struct stat *dir_stat) return NULL; cache = FcCacheFindByStat (fd_stat); if (cache) - return cache; + { + if (FcCacheTimeValid (cache, dir_stat)) + return cache; + FcDirCacheUnload (cache); + cache = NULL; + } + /* * Lage cache files are mmap'ed, smaller cache files are read. This * balances the system cost of mmap against per-process memory usage. @@ -461,6 +563,8 @@ FcDirCacheMapFd (int fd, struct stat *fd_stat, struct stat *dir_stat) { #if defined(HAVE_MMAP) || defined(__CYGWIN__) cache = mmap (0, fd_stat->st_size, PROT_READ, MAP_SHARED, fd, 0); + if (cache == MAP_FAILED) + cache = NULL; #elif defined(_WIN32) { HANDLE hFileMap; @@ -470,7 +574,7 @@ FcDirCacheMapFd (int fd, struct stat *fd_stat, struct stat *dir_stat) PAGE_READONLY, 0, 0, NULL); if (hFileMap != NULL) { - cache = MapViewOfFile (hFileMap, FILE_MAP_READ, 0, 0, + cache = MapViewOfFile (hFileMap, FILE_MAP_READ, 0, 0, fd_stat->st_size); CloseHandle (hFileMap); } @@ -489,12 +593,12 @@ FcDirCacheMapFd (int fd, struct stat *fd_stat, struct stat *dir_stat) return NULL; } allocated = FcTrue; - } - if (cache->magic != FC_CACHE_MAGIC_MMAP || + } + if (cache->magic != FC_CACHE_MAGIC_MMAP || cache->version < FC_CACHE_CONTENT_VERSION || cache->size != fd_stat->st_size || - !FcCacheInsert (cache, fd_stat) || - !FcCacheTimeValid (cache, dir_stat)) + !FcCacheTimeValid (cache, dir_stat) || + !FcCacheInsert (cache, fd_stat)) { if (allocated) free (cache); @@ -559,7 +663,10 @@ FcDirCacheLoadFile (const FcChar8 *cache_file, struct stat *file_stat) { int fd; FcCache *cache; + struct stat my_file_stat; + if (!file_stat) + file_stat = &my_file_stat; fd = FcDirCacheOpenFile (cache_file, file_stat); if (fd < 0) return NULL; @@ -577,7 +684,7 @@ FcDirCacheValidateHelper (int fd, struct stat *fd_stat, struct stat *dir_stat, v { FcBool ret = FcTrue; FcCache c; - + if (read (fd, &c, sizeof (FcCache)) != sizeof (FcCache)) ret = FcFalse; else if (c.magic != FC_CACHE_MAGIC_MMAP) @@ -594,7 +701,7 @@ FcDirCacheValidateHelper (int fd, struct stat *fd_stat, struct stat *dir_stat, v static FcBool FcDirCacheValidConfig (const FcChar8 *dir, FcConfig *config) { - return FcDirCacheProcess (config, dir, + return FcDirCacheProcess (config, dir, FcDirCacheValidateHelper, NULL, NULL); } @@ -603,7 +710,7 @@ FcBool FcDirCacheValid (const FcChar8 *dir) { FcConfig *config; - + config = FcConfigGetCurrent (); if (!config) return FcFalse; @@ -625,7 +732,7 @@ FcDirCacheBuild (FcFontSet *set, const FcChar8 *dir, struct stat *dir_stat, FcSt FcChar8 *dir_serialize; intptr_t *dirs_serialize; FcFontSet *set_serialize; - + if (!serialize) return NULL; /* @@ -650,7 +757,7 @@ FcDirCacheBuild (FcFontSet *set, const FcChar8 *dir, struct stat *dir_stat, FcSt */ if (!FcFontSetSerializeAlloc (serialize, set)) goto bail1; - + /* Serialize layout complete. Now allocate space and fill it */ cache = malloc (serialize->size); if (!cache) @@ -672,7 +779,7 @@ FcDirCacheBuild (FcFontSet *set, const FcChar8 *dir, struct stat *dir_stat, FcSt if (!dir_serialize) goto bail2; cache->dir = FcPtrToOffset (cache, dir_serialize); - + /* * Serialize sub dirs */ @@ -681,14 +788,14 @@ FcDirCacheBuild (FcFontSet *set, const FcChar8 *dir, struct stat *dir_stat, FcSt 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 */ @@ -698,7 +805,7 @@ FcDirCacheBuild (FcFontSet *set, const FcChar8 *dir, struct stat *dir_stat, FcSt cache->set = FcPtrToOffset (cache, set_serialize); FcSerializeDestroy (serialize); - + FcCacheInsert (cache, NULL); return cache; @@ -720,17 +827,17 @@ FcMakeDirectory (const FcChar8 *dir) { FcChar8 *parent; FcBool ret; - + if (strlen ((char *) dir) == 0) return FcFalse; - + parent = FcStrDirname (dir); if (!parent) return FcFalse; if (access ((char *) parent, F_OK) == 0) - ret = mkdir ((char *) dir, 0777) == 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, 0777) == 0); + ret = FcMakeDirectory (parent) && (mkdir ((char *) dir, 0755) == 0) && chmod ((char *) dir, 0755) == 0; else ret = FcFalse; FcStrFree (parent); @@ -749,18 +856,20 @@ FcDirCacheWrite (FcCache *cache, FcConfig *config) FcStrList *list; FcChar8 *cache_dir = NULL; FcChar8 *test_dir; + FcCacheSkip *skip; + struct stat cache_stat; int magic; int written; /* * 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) == 0) + if (access ((char *) test_dir, W_OK|X_OK) == 0) { cache_dir = test_dir; break; @@ -777,6 +886,14 @@ FcDirCacheWrite (FcCache *cache, FcConfig *config) break; } } + /* + * Otherwise, try making it writable + */ + else if (chmod ((char *) test_dir, 0755) == 0) + { + cache_dir = test_dir; + break; + } } } FcStrListDone (list); @@ -802,21 +919,21 @@ FcDirCacheWrite (FcCache *cache, FcConfig *config) fd = open((char *)FcAtomicNewFile (atomic), O_RDWR | O_CREAT | O_BINARY, 0666); if (fd == -1) goto bail4; - + /* 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"); @@ -826,6 +943,20 @@ FcDirCacheWrite (FcCache *cache, FcConfig *config) close(fd); if (!FcAtomicReplaceOrig(atomic)) goto bail4; + + /* 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 && + (skip = FcCacheFindByAddr (cache)) && + 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; + } + FcStrFree (cache_hashed); FcAtomicUnlock (atomic); FcAtomicDestroy (atomic); @@ -861,7 +992,7 @@ 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++) @@ -995,7 +1126,7 @@ static void MD5Update(struct MD5Context *ctx, const unsigned char *buf, unsigned } /* - * 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) @@ -1036,7 +1167,7 @@ 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 */ }