Function write_index_as_tree

cache-tree.c:752–786

int write_index_as_tree(struct object_id *oid, struct index_state *index_state, const char *index_path, int flags, const char *prefix)
{
	int entries, was_valid;
	struct lock_file lock_file = LOCK_INIT;
	int ret;

	hold_lock_file_for_update(&lock_file, index_path, LOCK_DIE_ON_ERROR);

	entries = read_index_from(index_state, index_path,
				  repo_get_git_dir(the_repository));
	if (entries < 0) {
		ret = WRITE_TREE_UNREADABLE_INDEX;
		goto out;
	}

	was_valid = !(flags & WRITE_TREE_IGNORE_CACHE_TREE) &&
		    index_state->cache_tree &&
		    cache_tree_fully_valid(index_state->cache_tree);

	ret = write_index_as_tree_internal(oid, index_state, was_valid, flags,
					   prefix);
	if (!ret && !was_valid) {
		write_locked_index(index_state, &lock_file, COMMIT_LOCK);
		/* Not being able to write is fine -- we are only interested
		 * in updating the cache-tree part, and if the next caller
		 * ends up using the old index with unupdated cache-tree part
		 * it misses the work we did here, but that is just a
		 * performance penalty and not a big deal.
		 */
	}

out:
	rollback_lock_file(&lock_file);
	return ret;
}

static void prime_cache_tree_sparse_dir(struct cache_tree *it,
					struct tree *tree)