Function reftable_be_init

refs/reftable-backend.c:368–458

}

static struct ref_store *reftable_be_init(struct repository *repo,
					  const char *payload,
					  const char *gitdir,
					  const struct ref_store_init_options *opts)
{
	struct reftable_ref_store *refs = xcalloc(1, sizeof(*refs));
	struct strbuf ref_common_dir = STRBUF_INIT;
	struct strbuf refdir = STRBUF_INIT;
	struct strbuf path = STRBUF_INIT;
	bool is_worktree;
	mode_t mask;

	mask = umask(0);
	umask(mask);

	refs_compute_filesystem_location(gitdir, payload, &is_worktree, &refdir,
					 &ref_common_dir);

	base_ref_store_init(&refs->base, repo, refdir.buf, &refs_be_reftable);
	strmap_init(&refs->worktree_backends);
	refs->log_all_ref_updates = opts->log_all_ref_updates;
	refs->store_flags = opts->access_flags;

	switch (repo->hash_algo->format_id) {
	case GIT_SHA1_FORMAT_ID:
		refs->write_options.hash_id = REFTABLE_HASH_SHA1;
		break;
	case GIT_SHA256_FORMAT_ID:
		refs->write_options.hash_id = REFTABLE_HASH_SHA256;
		break;
	default:
		BUG("unknown hash algorithm %d", repo->hash_algo->format_id);
	}
	refs->write_options.default_permissions = calc_shared_perm(repo, 0666 & ~mask);
	refs->write_options.disable_auto_compact =
		!git_env_bool("GIT_TEST_REFTABLE_AUTOCOMPACTION", 1);
	refs->write_options.lock_timeout_ms = 100;

	repo_config(repo, reftable_be_config, &refs->write_options);

	/*
	 * It is somewhat unfortunate that we have to mirror the default block
	 * size of the reftable library here. But given that the write options
	 * wouldn't be updated by the library here, and given that we require
	 * the proper block size to trim reflog message so that they fit, we
	 * must set up a proper value here.
	 */
	if (!refs->write_options.block_size)
		refs->write_options.block_size = 4096;

	/*
	 * Set up the main reftable stack that is hosted in GIT_COMMON_DIR.
	 * This stack contains both the shared and the main worktree refs.
	 */
	strbuf_addbuf(&path, &ref_common_dir);
	if (!is_worktree) {
		strbuf_reset(&path);
		strbuf_realpath(&path, ref_common_dir.buf, 0);