diff options
Diffstat (limited to 'src')
| -rw-r--r-- | src/fccache.c | 59 |
1 files changed, 53 insertions, 6 deletions
diff --git a/src/fccache.c b/src/fccache.c index 09e876b0..27b12827 100644 --- a/src/fccache.c +++ b/src/fccache.c @@ -1015,6 +1015,55 @@ FcDirCacheLoadFile (const FcChar8 *cache_file, struct stat *file_stat) return cache; } +static int +FcDirChecksum (struct stat *statb) +{ + int ret = (int) statb->st_mtime; + char *endptr; + char *source_date_epoch; + unsigned long long epoch; + + source_date_epoch = getenv("SOURCE_DATE_EPOCH"); + if (source_date_epoch) + { + epoch = strtoull(source_date_epoch, &endptr, 10); + + if (endptr == source_date_epoch) + fprintf (stderr, + "Fontconfig: SOURCE_DATE_EPOCH invalid\n"); + else if ((errno == ERANGE && (epoch == ULLONG_MAX || epoch == 0)) + || (errno != 0 && epoch == 0)) + fprintf (stderr, + "Fontconfig: SOURCE_DATE_EPOCH: strtoull: %s: %llu\n", + strerror(errno), epoch); + else if (*endptr != '\0') + fprintf (stderr, + "Fontconfig: SOURCE_DATE_EPOCH has trailing garbage\n"); + else if (epoch > ULONG_MAX) + fprintf (stderr, + "Fontconfig: SOURCE_DATE_EPOCH must be <= %lu but saw: %llu\n", + ULONG_MAX, epoch); + else if (epoch < ret) + /* Only override if directory is newer */ + ret = (int) epoch; + } + + return ret; +} + +static int64_t +FcDirChecksumNano (struct stat *statb) +{ +#ifdef HAVE_STRUCT_STAT_ST_MTIM + /* No nanosecond component to parse */ + if (getenv("SOURCE_DATE_EPOCH")) + return 0; + return statb->st_mtim.tv_nsec; +#else + return 0; +#endif +} + /* * Validate a cache file by reading the header and checking * the magic number and the size field @@ -1033,10 +1082,10 @@ FcDirCacheValidateHelper (FcConfig *config, int fd, struct stat *fd_stat, struct ret = FcFalse; else if (fd_stat->st_size != c.size) ret = FcFalse; - else if (c.checksum != (int) dir_stat->st_mtime) + else if (c.checksum != FcDirChecksum (dir_stat)) ret = FcFalse; #ifdef HAVE_STRUCT_STAT_ST_MTIM - else if (c.checksum_nano != dir_stat->st_mtim.tv_nsec) + else if (c.checksum_nano != FcDirChecksumNano (dir_stat)) ret = FcFalse; #endif return ret; @@ -1112,10 +1161,8 @@ FcDirCacheBuild (FcFontSet *set, const FcChar8 *dir, struct stat *dir_stat, FcSt 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 + cache->checksum = FcDirChecksum (dir_stat); + cache->checksum_nano = FcDirChecksumNano (dir_stat); /* * Serialize directory name |