Ejemplo n.º 1
0
static int
dsl_dataset_user_hold_check(void *arg, dmu_tx_t *tx)
{
	dsl_dataset_user_hold_arg_t *dduha = arg;
	dsl_pool_t *dp = dmu_tx_pool(tx);
	nvpair_t *pair;

	if (spa_version(dp->dp_spa) < SPA_VERSION_USERREFS)
		return (SET_ERROR(ENOTSUP));

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

	for (pair = nvlist_next_nvpair(dduha->dduha_holds, NULL);
	    pair != NULL; pair = nvlist_next_nvpair(dduha->dduha_holds, pair)) {
		dsl_dataset_t *ds;
		int error = 0;
		char *htag, *name;

		/* must be a snapshot */
		name = nvpair_name(pair);
		if (strchr(name, '@') == NULL)
			error = SET_ERROR(EINVAL);

		if (error == 0)
			error = nvpair_value_string(pair, &htag);

		if (error == 0)
			error = dsl_dataset_hold(dp, name, FTAG, &ds);

		if (error == 0) {
			error = dsl_dataset_user_hold_check_one(ds, htag,
			    dduha->dduha_minor != 0, tx);
			dsl_dataset_rele(ds, FTAG);
		}

		if (error == 0) {
			fnvlist_add_string(dduha->dduha_chkholds, name, htag);
		} else {
			/*
			 * We register ENOENT errors so they can be correctly
			 * reported if needed, such as when all holds fail.
			 */
			fnvlist_add_int32(dduha->dduha_errlist, name, error);
			if (error != ENOENT)
				return (error);
		}
	}

	return (0);
}
Ejemplo n.º 2
0
static int
dsl_dataset_user_hold_check(void *arg, dmu_tx_t *tx)
{
	dsl_dataset_user_hold_arg_t *dduha = arg;
	dsl_pool_t *dp = dmu_tx_pool(tx);
	nvpair_t *pair;
	int rv = 0;

	if (spa_version(dp->dp_spa) < SPA_VERSION_USERREFS)
		return (ENOTSUP);

	for (pair = nvlist_next_nvpair(dduha->dduha_holds, NULL); pair != NULL;
	    pair = nvlist_next_nvpair(dduha->dduha_holds, pair)) {
		int error = 0;
		dsl_dataset_t *ds;
		char *htag;

		/* must be a snapshot */
		if (strchr(nvpair_name(pair), '@') == NULL)
			error = EINVAL;

		if (error == 0)
			error = nvpair_value_string(pair, &htag);
		if (error == 0) {
			error = dsl_dataset_hold(dp,
			    nvpair_name(pair), FTAG, &ds);
		}
		if (error == 0) {
			error = dsl_dataset_user_hold_check_one(ds, htag,
			    dduha->dduha_minor != 0, tx);
			dsl_dataset_rele(ds, FTAG);
		}

		if (error != 0) {
			rv = error;
			fnvlist_add_int32(dduha->dduha_errlist,
			    nvpair_name(pair), error);
		}
	}
	return (rv);
}