C++ (Cpp) dsl_destroy_snapshot_check_impl示例

示例#1

文件： dsl_destroy.c 项目： pcd1193182/openzfs

int
dsl_destroy_snapshot_check(void *arg, dmu_tx_t *tx)
{
	dsl_destroy_snapshot_arg_t *ddsa = arg;
	const char *dsname = ddsa->ddsa_name;
	boolean_t defer = ddsa->ddsa_defer;

	dsl_pool_t *dp = dmu_tx_pool(tx);
	int error = 0;
	dsl_dataset_t *ds;

	error = dsl_dataset_hold(dp, dsname, FTAG, &ds);

	/*
	 * If the snapshot does not exist, silently ignore it, and
	 * dsl_destroy_snapshot_sync() will be a no-op
	 * (it's "already destroyed").
	 */
	if (error == ENOENT)
		return (0);

	if (error == 0) {
		error = dsl_destroy_snapshot_check_impl(ds, defer);
		dsl_dataset_rele(ds, FTAG);
	}

	return (error);
}

示例#2

文件： dsl_destroy.c 项目： koplover/zfs

static int
dsl_destroy_snapshot_check(void *arg, dmu_tx_t *tx)
{
	dmu_snapshots_destroy_arg_t *dsda = arg;
	dsl_pool_t *dp = dmu_tx_pool(tx);
	nvpair_t *pair;
	int error = 0;

	if (!dmu_tx_is_syncing(tx))
		return (0);

	for (pair = nvlist_next_nvpair(dsda->dsda_snaps, NULL);
	    pair != NULL; pair = nvlist_next_nvpair(dsda->dsda_snaps, pair)) {
		dsl_dataset_t *ds;

		error = dsl_dataset_hold(dp, nvpair_name(pair),
		    FTAG, &ds);

		/*
		 * If the snapshot does not exist, silently ignore it
		 * (it's "already destroyed").
		 */
		if (error == ENOENT)
			continue;

		if (error == 0) {
			error = dsl_destroy_snapshot_check_impl(ds,
			    dsda->dsda_defer);
			dsl_dataset_rele(ds, FTAG);
		}

		if (error == 0) {
			fnvlist_add_boolean(dsda->dsda_successful_snaps,
			    nvpair_name(pair));
		} else {
			fnvlist_add_int32(dsda->dsda_errlist,
			    nvpair_name(pair), error);
		}
	}

	pair = nvlist_next_nvpair(dsda->dsda_errlist, NULL);
	if (pair != NULL)
		return (fnvpair_value_int32(pair));

	return (0);
}