diff options
| -rw-r--r-- | cache.h | 6 | ||||
| -rw-r--r-- | read-cache.c | 70 | ||||
| -rw-r--r-- | unpack-trees.c | 8 |
3 files changed, 65 insertions, 19 deletions
@@ -140,8 +140,8 @@ struct ondisk_cache_entry_extended { }; struct cache_entry { - unsigned int ce_ctime; - unsigned int ce_mtime; + struct cache_time ce_ctime; + struct cache_time ce_mtime; unsigned int ce_dev; unsigned int ce_ino; unsigned int ce_mode; @@ -282,7 +282,7 @@ struct index_state { struct cache_entry **cache; unsigned int cache_nr, cache_alloc, cache_changed; struct cache_tree *cache_tree; - time_t timestamp; + struct cache_time timestamp; void *alloc; unsigned name_hash_initialized : 1, initialized : 1; diff --git a/read-cache.c b/read-cache.c index 59a274b46..bb0737159 100644 --- a/read-cache.c +++ b/read-cache.c @@ -67,8 +67,15 @@ void rename_index_entry_at(struct index_state *istate, int nr, const char *new_n */ void fill_stat_cache_info(struct cache_entry *ce, struct stat *st) { - ce->ce_ctime = st->st_ctime; - ce->ce_mtime = st->st_mtime; + ce->ce_ctime.sec = (unsigned int)st->st_ctime; + ce->ce_mtime.sec = (unsigned int)st->st_mtime; +#ifdef USE_NSEC + ce->ce_ctime.nsec = (unsigned int)st->st_ctim.tv_nsec; + ce->ce_mtime.nsec = (unsigned int)st->st_mtim.tv_nsec; +#else + ce->ce_ctime.nsec = 0; + ce->ce_mtime.nsec = 0; +#endif ce->ce_dev = st->st_dev; ce->ce_ino = st->st_ino; ce->ce_uid = st->st_uid; @@ -196,11 +203,18 @@ static int ce_match_stat_basic(struct cache_entry *ce, struct stat *st) default: die("internal error: ce_mode is %o", ce->ce_mode); } - if (ce->ce_mtime != (unsigned int) st->st_mtime) + if (ce->ce_mtime.sec != (unsigned int)st->st_mtime) changed |= MTIME_CHANGED; - if (trust_ctime && ce->ce_ctime != (unsigned int) st->st_ctime) + if (trust_ctime && ce->ce_ctime.sec != (unsigned int)st->st_ctime) changed |= CTIME_CHANGED; +#ifdef USE_NSEC + if (ce->ce_mtime.nsec != (unsigned int)st->st_mtim.tv_nsec) + changed |= MTIME_CHANGED; + if (trust_ctime && ce->ce_ctime.nsec != (unsigned int)st->st_ctim.tv_nsec) + changed |= CTIME_CHANGED; +#endif + if (ce->ce_uid != (unsigned int) st->st_uid || ce->ce_gid != (unsigned int) st->st_gid) changed |= OWNER_CHANGED; @@ -232,8 +246,16 @@ static int ce_match_stat_basic(struct cache_entry *ce, struct stat *st) static int is_racy_timestamp(const struct index_state *istate, struct cache_entry *ce) { return (!S_ISGITLINK(ce->ce_mode) && - istate->timestamp && - ((unsigned int)istate->timestamp) <= ce->ce_mtime); + istate->timestamp.sec && +#ifdef USE_NSEC + /* nanosecond timestamped files can also be racy! */ + (istate->timestamp.sec < ce->ce_mtime.sec || + (istate->timestamp.sec == ce->ce_mtime.sec && + istate->timestamp.nsec <= ce->ce_mtime.nsec)) +#else + istate->timestamp.sec <= ce->ce_mtime.sec +#endif + ); } int ie_match_stat(const struct index_state *istate, @@ -1159,8 +1181,15 @@ static void convert_from_disk(struct ondisk_cache_entry *ondisk, struct cache_en size_t len; const char *name; - ce->ce_ctime = ntohl(ondisk->ctime.sec); - ce->ce_mtime = ntohl(ondisk->mtime.sec); + ce->ce_ctime.sec = ntohl(ondisk->ctime.sec); + ce->ce_mtime.sec = ntohl(ondisk->mtime.sec); +#ifdef USE_NSEC + ce->ce_ctime.nsec = ntohl(ondisk->ctime.nsec); + ce->ce_mtime.nsec = ntohl(ondisk->mtime.nsec); +#else + ce->ce_ctime.nsec = 0; + ce->ce_mtime.nsec = 0; +#endif ce->ce_dev = ntohl(ondisk->dev); ce->ce_ino = ntohl(ondisk->ino); ce->ce_mode = ntohl(ondisk->mode); @@ -1226,7 +1255,8 @@ int read_index_from(struct index_state *istate, const char *path) return istate->cache_nr; errno = ENOENT; - istate->timestamp = 0; + istate->timestamp.sec = 0; + istate->timestamp.nsec = 0; fd = open(path, O_RDONLY); if (fd < 0) { if (errno == ENOENT) @@ -1278,7 +1308,13 @@ int read_index_from(struct index_state *istate, const char *path) src_offset += ondisk_ce_size(ce); dst_offset += ce_size(ce); } - istate->timestamp = st.st_mtime; + istate->timestamp.sec = st.st_mtime; +#ifdef USE_NSEC + istate->timestamp.nsec = (unsigned int)st.st_mtim.tv_nsec; +#else + istate->timestamp.nsec = 0; +#endif + while (src_offset <= mmap_size - 20 - 8) { /* After an array of active_nr index entries, * there can be arbitrary number of extended @@ -1308,14 +1344,15 @@ unmap: int is_index_unborn(struct index_state *istate) { - return (!istate->cache_nr && !istate->alloc && !istate->timestamp); + return (!istate->cache_nr && !istate->alloc && !istate->timestamp.sec); } int discard_index(struct index_state *istate) { istate->cache_nr = 0; istate->cache_changed = 0; - istate->timestamp = 0; + istate->timestamp.sec = 0; + istate->timestamp.nsec = 0; istate->name_hash_initialized = 0; free_hash(&istate->name_hash); cache_tree_free(&(istate->cache_tree)); @@ -1461,10 +1498,15 @@ static int ce_write_entry(git_SHA_CTX *c, int fd, struct cache_entry *ce) struct ondisk_cache_entry *ondisk = xcalloc(1, size); char *name; - ondisk->ctime.sec = htonl(ce->ce_ctime); + ondisk->ctime.sec = htonl(ce->ce_ctime.sec); + ondisk->mtime.sec = htonl(ce->ce_mtime.sec); +#ifdef USE_NSEC + ondisk->ctime.nsec = htonl(ce->ce_ctime.nsec); + ondisk->mtime.nsec = htonl(ce->ce_mtime.nsec); +#else ondisk->ctime.nsec = 0; - ondisk->mtime.sec = htonl(ce->ce_mtime); ondisk->mtime.nsec = 0; +#endif ondisk->dev = htonl(ce->ce_dev); ondisk->ino = htonl(ce->ce_ino); ondisk->mode = htonl(ce->ce_mode); diff --git a/unpack-trees.c b/unpack-trees.c index 273b5da0a..11902cd51 100644 --- a/unpack-trees.c +++ b/unpack-trees.c @@ -360,8 +360,12 @@ int unpack_trees(unsigned len, struct tree_desc *t, struct unpack_trees_options memset(&o->result, 0, sizeof(o->result)); o->result.initialized = 1; - if (o->src_index) - o->result.timestamp = o->src_index->timestamp; + if (o->src_index) { + o->result.timestamp.sec = o->src_index->timestamp.sec; +#ifdef USE_NSEC + o->result.timestamp.nsec = o->src_index->timestamp.nsec; +#endif + } o->merge_size = len; if (!dfc) |