static int ce_compare_gitlink(const struct cache_entry *ce)
{
- unsigned char sha1[20];
+ struct object_id oid;
/*
* We don't actually require that the .git directory
*
* If so, we consider it always to match.
*/
- if (resolve_gitlink_ref(ce->name, "HEAD", sha1) < 0)
+ if (resolve_gitlink_ref(ce->name, "HEAD", &oid) < 0)
return 0;
- return hashcmp(sha1, ce->oid.hash);
+ return oidcmp(&oid, &ce->oid);
}
static int ce_modified_check_fs(const struct cache_entry *ce, struct stat *st)
case S_IFDIR:
if (S_ISGITLINK(ce->ce_mode))
return ce_compare_gitlink(ce) ? DATA_CHANGED : 0;
+ /* else fallthrough */
default:
return TYPE_CHANGED;
}
{
int size, namelen, was_same;
mode_t st_mode = st->st_mode;
- struct cache_entry *ce, *alias;
+ struct cache_entry *ce, *alias = NULL;
unsigned ce_option = CE_MATCH_IGNORE_VALID|CE_MATCH_IGNORE_SKIP_WORKTREE|CE_MATCH_RACY_IS_DIRTY;
int verbose = flags & (ADD_CACHE_VERBOSE | ADD_CACHE_PRETEND);
int pretend = flags & ADD_CACHE_PRETEND;
int intent_only = flags & ADD_CACHE_INTENT;
int add_option = (ADD_CACHE_OK_TO_ADD|ADD_CACHE_OK_TO_REPLACE|
(intent_only ? ADD_CACHE_NEW_ONLY : 0));
+ int newflags = HASH_WRITE_OBJECT;
+
+ if (flags & HASH_RENORMALIZE)
+ newflags |= HASH_RENORMALIZE;
if (!S_ISREG(st_mode) && !S_ISLNK(st_mode) && !S_ISDIR(st_mode))
return error("%s: can only add regular files, symbolic links or git-directories", path);
if (ignore_case) {
adjust_dirname_case(istate, ce->name);
}
+ if (!(flags & HASH_RENORMALIZE)) {
+ alias = index_file_exists(istate, ce->name,
+ ce_namelen(ce), ignore_case);
+ if (alias &&
+ !ce_stage(alias) &&
+ !ie_match_stat(istate, alias, st, ce_option)) {
+ /* Nothing changed, really */
+ if (!S_ISGITLINK(alias->ce_mode))
+ ce_mark_uptodate(alias);
+ alias->ce_flags |= CE_ADDED;
- alias = index_file_exists(istate, ce->name, ce_namelen(ce), ignore_case);
- if (alias && !ce_stage(alias) && !ie_match_stat(istate, alias, st, ce_option)) {
- /* Nothing changed, really */
- if (!S_ISGITLINK(alias->ce_mode))
- ce_mark_uptodate(alias);
- alias->ce_flags |= CE_ADDED;
-
- free(ce);
- return 0;
+ free(ce);
+ return 0;
+ }
}
if (!intent_only) {
- if (index_path(&ce->oid, path, st, HASH_WRITE_OBJECT)) {
+ if (index_path(&ce->oid, path, st, newflags)) {
free(ce);
return error("unable to index file %s", path);
}
/* Allow fsck to force verification of the index checksum. */
int verify_index_checksum;
+/* Allow fsck to force verification of the cache entry order. */
+int verify_ce_order;
+
static int verify_hdr(struct cache_header *hdr, unsigned long size)
{
git_SHA_CTX c;
int read_index(struct index_state *istate)
{
- return read_index_from(istate, get_index_file());
+ return read_index_from(istate, get_index_file(), get_git_dir());
}
static struct cache_entry *cache_entry_from_ondisk(struct ondisk_cache_entry *ondisk,
{
unsigned int i;
+ if (!verify_ce_order)
+ return;
+
for (i = 1; i < istate->cache_nr; i++) {
struct cache_entry *ce = istate->cache[i - 1];
struct cache_entry *next_ce = istate->cache[i];
* This way, shared index can be removed if they have not been used
* for some time.
*/
-static void freshen_shared_index(char *base_sha1_hex, int warn)
+static void freshen_shared_index(const char *shared_index, int warn)
{
- char *shared_index = git_pathdup("sharedindex.%s", base_sha1_hex);
if (!check_and_freshen_file(shared_index, 1) && warn)
warning("could not freshen shared index '%s'", shared_index);
- free(shared_index);
}
-int read_index_from(struct index_state *istate, const char *path)
+int read_index_from(struct index_state *istate, const char *path,
+ const char *gitdir)
{
struct split_index *split_index;
int ret;
char *base_sha1_hex;
- const char *base_path;
+ char *base_path;
/* istate->initialized covers both .git/index and .git/sharedindex.xxx */
if (istate->initialized)
split_index->base = xcalloc(1, sizeof(*split_index->base));
base_sha1_hex = sha1_to_hex(split_index->base_sha1);
- base_path = git_path("sharedindex.%s", base_sha1_hex);
+ base_path = xstrfmt("%s/sharedindex.%s", gitdir, base_sha1_hex);
ret = do_read_index(split_index->base, base_path, 1);
if (hashcmp(split_index->base_sha1, split_index->base->sha1))
die("broken index, expect %s in %s, got %s",
base_sha1_hex, base_path,
sha1_to_hex(split_index->base->sha1));
- freshen_shared_index(base_sha1_hex, 0);
+ freshen_shared_index(base_path, 0);
merge_base_index(istate);
post_read_index_from(istate);
+ free(base_path);
return ret;
}
unsigned int buffered = write_buffer_len;
if (buffered) {
git_SHA1_Update(context, write_buffer, buffered);
- if (write_in_full(fd, write_buffer, buffered) != buffered)
+ if (write_in_full(fd, write_buffer, buffered) < 0)
return -1;
write_buffer_len = 0;
}
/* Flush first if not enough space for SHA1 signature */
if (left + 20 > WRITE_BUFFER_SIZE) {
- if (write_in_full(fd, write_buffer, left) != left)
+ if (write_in_full(fd, write_buffer, left) < 0)
return -1;
left = 0;
}
git_SHA1_Final(write_buffer + left, context);
hashcpy(sha1, write_buffer + left);
left += 20;
- return (write_in_full(fd, write_buffer, left) != left) ? -1 : 0;
+ return (write_in_full(fd, write_buffer, left) < 0) ? -1 : 0;
}
static void ce_smudge_racily_clean_entry(struct cache_entry *ce)
if (!result)
result = ce_write(c, fd, to_remove_vi, prefix_size);
if (!result)
- result = ce_write(c, fd, ce->name + common, ce_namelen(ce) - common + 1);
+ result = ce_write(c, fd, ce->name + common, ce_namelen(ce) - common);
+ if (!result)
+ result = ce_write(c, fd, padding, 1);
strbuf_splice(previous_name, common, to_remove,
ce->name + common, ce_namelen(ce) - common);
return 0;
}
-/*
- * Opportunistically update the index but do not complain if we can't
- */
void update_index_if_able(struct index_state *istate, struct lock_file *lockfile)
{
if ((istate->cache_changed || has_racy_timestamp(istate)) &&
- verify_index(istate) &&
- write_locked_index(istate, lockfile, COMMIT_LOCK))
+ verify_index(istate))
+ write_locked_index(istate, lockfile, COMMIT_LOCK);
+ else
rollback_lock_file(lockfile);
}
+/*
+ * On success, `tempfile` is closed. If it is the temporary file
+ * of a `struct lock_file`, we will therefore effectively perform
+ * a 'close_lock_file_gently()`. Since that is an implementation
+ * detail of lockfiles, callers of `do_write_index()` should not
+ * rely on it.
+ */
static int do_write_index(struct index_state *istate, struct tempfile *tempfile,
int strip_extensions)
{
struct stat st;
struct ondisk_cache_entry_extended ondisk;
struct strbuf previous_name_buf = STRBUF_INIT, *previous_name;
- int drop_cache_tree = 0;
+ int drop_cache_tree = istate->drop_cache_tree;
for (i = removed = extended = 0; i < entries; i++) {
if (cache[i]->ce_flags & CE_REMOVE)
if (ce_flush(&c, newfd, istate->sha1))
return -1;
- if (close_tempfile(tempfile))
- return error(_("could not close '%s'"), tempfile->filename.buf);
+ if (close_tempfile_gently(tempfile)) {
+ error(_("could not close '%s'"), tempfile->filename.buf);
+ return -1;
+ }
if (stat(tempfile->filename.buf, &st))
return -1;
istate->timestamp.sec = (unsigned int)st.st_mtime;
static int do_write_locked_index(struct index_state *istate, struct lock_file *lock,
unsigned flags)
{
- int ret = do_write_index(istate, &lock->tempfile, 0);
+ int ret = do_write_index(istate, lock->tempfile, 0);
if (ret)
return ret;
- assert((flags & (COMMIT_LOCK | CLOSE_LOCK)) !=
- (COMMIT_LOCK | CLOSE_LOCK));
if (flags & COMMIT_LOCK)
return commit_locked_index(lock);
- else if (flags & CLOSE_LOCK)
- return close_lock_file(lock);
- else
- return ret;
+ return close_lock_file_gently(lock);
}
static int write_split_index(struct index_state *istate,
return 0;
}
-static struct tempfile temporary_sharedindex;
-
static int write_shared_index(struct index_state *istate,
- struct lock_file *lock, unsigned flags)
+ struct tempfile **temp)
{
struct split_index *si = istate->split_index;
- int fd, ret;
+ int ret;
- fd = mks_tempfile(&temporary_sharedindex, git_path("sharedindex_XXXXXX"));
- if (fd < 0) {
- hashclr(si->base_sha1);
- return do_write_locked_index(istate, lock, flags);
- }
move_cache_to_base_index(istate);
- ret = do_write_index(si->base, &temporary_sharedindex, 1);
- if (ret) {
- delete_tempfile(&temporary_sharedindex);
+ ret = do_write_index(si->base, *temp, 1);
+ if (ret)
return ret;
- }
- ret = adjust_shared_perm(get_tempfile_path(&temporary_sharedindex));
+ ret = adjust_shared_perm(get_tempfile_path(*temp));
if (ret) {
- int save_errno = errno;
- error("cannot fix permission bits on %s", get_tempfile_path(&temporary_sharedindex));
- delete_tempfile(&temporary_sharedindex);
- errno = save_errno;
+ error("cannot fix permission bits on %s", get_tempfile_path(*temp));
return ret;
}
- ret = rename_tempfile(&temporary_sharedindex,
+ ret = rename_tempfile(temp,
git_path("sharedindex.%s", sha1_to_hex(si->base->sha1)));
if (!ret) {
hashcpy(si->base_sha1, si->base->sha1);
(istate->cache_changed & ~EXTMASK)) {
if (si)
hashclr(si->base_sha1);
- return do_write_locked_index(istate, lock, flags);
+ ret = do_write_locked_index(istate, lock, flags);
+ goto out;
}
if (getenv("GIT_TEST_SPLIT_INDEX")) {
new_shared_index = istate->cache_changed & SPLIT_INDEX_ORDERED;
if (new_shared_index) {
- ret = write_shared_index(istate, lock, flags);
+ struct tempfile *temp;
+ int saved_errno;
+
+ temp = mks_tempfile(git_path("sharedindex_XXXXXX"));
+ if (!temp) {
+ hashclr(si->base_sha1);
+ ret = do_write_locked_index(istate, lock, flags);
+ goto out;
+ }
+ ret = write_shared_index(istate, &temp);
+
+ saved_errno = errno;
+ if (is_tempfile_active(temp))
+ delete_tempfile(&temp);
+ errno = saved_errno;
+
if (ret)
- return ret;
+ goto out;
}
ret = write_split_index(istate, lock, flags);
/* Freshen the shared index only if the split-index was written */
- if (!ret && !new_shared_index)
- freshen_shared_index(sha1_to_hex(si->base_sha1), 1);
+ if (!ret && !new_shared_index) {
+ const char *shared_index = git_path("sharedindex.%s",
+ sha1_to_hex(si->base_sha1));
+ freshen_shared_index(shared_index, 1);
+ }
+out:
+ if (flags & COMMIT_LOCK)
+ rollback_lock_file(lock);
return ret;
}