Beispiel #1
0
/*
 * Creates snapshots.
 *
 * The keys in the snaps nvlist are the snapshots to be created.
 * They must all be in the same pool.
 *
 * The props nvlist is properties to set.  Currently only user properties
 * are supported.  { user:prop_name -> string value }
 *
 * The returned results nvlist will have an entry for each snapshot that failed.
 * The value will be the (int32) error code.
 *
 * The return value will be 0 if all snapshots were created, otherwise it will
 * be the errno of a (unspecified) snapshot that failed.
 */
int
lzc_snapshot(nvlist_t *snaps, nvlist_t *props, nvlist_t **errlist)
{
	nvpair_t *elem;
	nvlist_t *args;
	int error;
	char pool[MAXNAMELEN];

	*errlist = NULL;

	/* determine the pool name */
	elem = nvlist_next_nvpair(snaps, NULL);
	if (elem == NULL)
		return (0);
	(void) strlcpy(pool, nvpair_name(elem), sizeof (pool));
	pool[strcspn(pool, "/@")] = '\0';

	args = fnvlist_alloc();
	fnvlist_add_nvlist(args, "snaps", snaps);
	if (props != NULL)
		fnvlist_add_nvlist(args, "props", props);

	error = lzc_ioctl(ZFS_IOC_SNAPSHOT, pool, args, errlist);
	nvlist_free(args);

	return (error);
}
Beispiel #2
0
int
lzc_change_key(const char *fsname, uint64_t crypt_cmd, nvlist_t *props,
    uint8_t *wkeydata, uint_t wkeylen)
{
	int error;
	nvlist_t *ioc_args = fnvlist_alloc();
	nvlist_t *hidden_args = NULL;

	fnvlist_add_uint64(ioc_args, "crypt_cmd", crypt_cmd);

	if (wkeydata != NULL) {
		hidden_args = fnvlist_alloc();
		fnvlist_add_uint8_array(hidden_args, "wkeydata", wkeydata,
		    wkeylen);
		fnvlist_add_nvlist(ioc_args, ZPOOL_HIDDEN_ARGS, hidden_args);
	}

	if (props != NULL)
		fnvlist_add_nvlist(ioc_args, "props", props);

	error = lzc_ioctl(ZFS_IOC_CHANGE_KEY, fsname, ioc_args, NULL);
	nvlist_free(hidden_args);
	nvlist_free(ioc_args);
	return (error);
}
Beispiel #3
0
static void
test_recv_new(const char *dataset, int fd)
{
	dmu_replay_record_t drr = { 0 };
	nvlist_t *required = fnvlist_alloc();
	nvlist_t *optional = fnvlist_alloc();
	nvlist_t *props = fnvlist_alloc();
	char snapshot[MAXNAMELEN + 32];
	ssize_t count;

	int cleanup_fd = open(ZFS_DEV, O_RDWR);

	(void) snprintf(snapshot, sizeof (snapshot), "%[email protected]", dataset);

	count = pread(fd, &drr, sizeof (drr), 0);
	if (count != sizeof (drr)) {
		(void) fprintf(stderr, "could not read stream: %s\n",
		    strerror(errno));
	}

	fnvlist_add_string(required, "snapname", snapshot);
	fnvlist_add_byte_array(required, "begin_record", (uchar_t *)&drr,
	    sizeof (drr));
	fnvlist_add_int32(required, "input_fd", fd);

	fnvlist_add_string(props, "org.openzfs:launch", "September 17th, 2013");
	fnvlist_add_nvlist(optional, "localprops", props);
	fnvlist_add_boolean(optional, "force");
	fnvlist_add_int32(optional, "cleanup_fd", cleanup_fd);

	/*
	 * TODO - Resumable receive is harder to set up. So we currently
	 * ignore testing for one.
	 */
#if 0
	fnvlist_add_nvlist(optional, "props", recvdprops);
	fnvlist_add_string(optional, "origin", origin);
	fnvlist_add_boolean(optional, "resumable");
	fnvlist_add_uint64(optional, "action_handle", *action_handle);
#endif
	IOC_INPUT_TEST(ZFS_IOC_RECV_NEW, dataset, required, optional, EBADE);

	nvlist_free(props);
	nvlist_free(optional);
	nvlist_free(required);

	(void) close(cleanup_fd);
}
Beispiel #4
0
static void
test_channel_program(const char *pool)
{
	const char *program =
	    "arg = ...\n"
	    "argv = arg[\"argv\"]\n"
	    "return argv[1]";
	char *const argv[1] = { "Hello World!" };
	nvlist_t *required = fnvlist_alloc();
	nvlist_t *optional = fnvlist_alloc();
	nvlist_t *args = fnvlist_alloc();

	fnvlist_add_string(required, "program", program);
	fnvlist_add_string_array(args, "argv", argv, 1);
	fnvlist_add_nvlist(required, "arg", args);

	fnvlist_add_boolean_value(optional, "sync", B_TRUE);
	fnvlist_add_uint64(optional, "instrlimit", 1000 * 1000);
	fnvlist_add_uint64(optional, "memlimit", 8192 * 1024);

	IOC_INPUT_TEST(ZFS_IOC_CHANNEL_PROGRAM, pool, required, optional, 0);

	nvlist_free(args);
	nvlist_free(optional);
	nvlist_free(required);
}
Beispiel #5
0
/*
 * Sigh.  Inside a local zone, we don't have access to /etc/zfs/zpool.cache,
 * and we don't want to allow the local zone to see all the pools anyway.
 * So we have to invent the ZFS_IOC_CONFIG ioctl to grab the configuration
 * information for all pool visible within the zone.
 */
nvlist_t *
spa_all_configs(uint64_t *generation)
{
	nvlist_t *pools;
	spa_t *spa = NULL;

	if (*generation == spa_config_generation)
		return (NULL);

	pools = fnvlist_alloc();

	mutex_enter(&spa_namespace_lock);
	while ((spa = spa_next(spa)) != NULL) {
		if (INGLOBALZONE(curproc) ||
		    zone_dataset_visible(spa_name(spa), NULL)) {
			mutex_enter(&spa->spa_props_lock);
			fnvlist_add_nvlist(pools, spa_name(spa),
			    spa->spa_config);
			mutex_exit(&spa->spa_props_lock);
		}
	}
	*generation = spa_config_generation;
	mutex_exit(&spa_namespace_lock);

	return (pools);
}
Beispiel #6
0
/*
 * Destroys snapshots.
 *
 * The keys in the snaps nvlist are the snapshots to be destroyed.
 * They must all be in the same pool.
 *
 * Snapshots that do not exist will be silently ignored.
 *
 * If 'defer' is not set, and a snapshot has user holds or clones, the
 * destroy operation will fail and none of the snapshots will be
 * destroyed.
 *
 * If 'defer' is set, and a snapshot has user holds or clones, it will be
 * marked for deferred destruction, and will be destroyed when the last hold
 * or clone is removed/destroyed.
 *
 * The return value will be 0 if all snapshots were destroyed (or marked for
 * later destruction if 'defer' is set) or didn't exist to begin with.
 *
 * Otherwise the return value will be the errno of a (unspecified) snapshot
 * that failed, no snapshots will be destroyed, and the errlist will have an
 * entry for each snapshot that failed.  The value in the errlist will be
 * the (int32) error code.
 */
int
lzc_destroy_snaps(nvlist_t *snaps, boolean_t defer, nvlist_t **errlist)
{
	nvpair_t *elem;
	nvlist_t *args;
	int error;
	char pool[MAXNAMELEN];

	/* determine the pool name */
	elem = nvlist_next_nvpair(snaps, NULL);
	if (elem == NULL)
		return (0);
	(void) strlcpy(pool, nvpair_name(elem), sizeof (pool));
	pool[strcspn(pool, "/@")] = '\0';

	args = fnvlist_alloc();
	fnvlist_add_nvlist(args, "snaps", snaps);
	if (defer)
		fnvlist_add_boolean(args, "defer");

	error = lzc_ioctl(ZFS_IOC_DESTROY_SNAPS, pool, args, errlist);
	nvlist_free(args);

	return (error);
}
Beispiel #7
0
/*
 * Create a redaction bookmark named bookname by redacting snapshot with respect
 * to all the snapshots in snapnv.
 */
int
lzc_redact(const char *snapshot, const char *bookname, nvlist_t *snapnv)
{
	nvlist_t *args = fnvlist_alloc();
	fnvlist_add_string(args, "bookname", bookname);
	fnvlist_add_nvlist(args, "snapnv", snapnv);
	int error = lzc_ioctl(ZFS_IOC_REDACT, snapshot, args, NULL);
	fnvlist_free(args);
	return (error);
}
Beispiel #8
0
static void
test_snapshot(const char *pool, const char *snapshot)
{
	nvlist_t *required = fnvlist_alloc();
	nvlist_t *optional = fnvlist_alloc();
	nvlist_t *snaps = fnvlist_alloc();
	nvlist_t *props = fnvlist_alloc();

	fnvlist_add_boolean(snaps, snapshot);
	fnvlist_add_nvlist(required, "snaps", snaps);

	fnvlist_add_string(props, "org.openzfs:launch", "September 17th, 2013");
	fnvlist_add_nvlist(optional, "props", props);

	IOC_INPUT_TEST(ZFS_IOC_SNAPSHOT, pool, required, optional, 0);

	nvlist_free(props);
	nvlist_free(snaps);
	nvlist_free(optional);
	nvlist_free(required);
}
Beispiel #9
0
int
lzc_create(const char *fsname, dmu_objset_type_t type, nvlist_t *props)
{
	int error;
	nvlist_t *args = fnvlist_alloc();
	fnvlist_add_int32(args, "type", type);
	if (props != NULL)
		fnvlist_add_nvlist(args, "props", props);
	error = lzc_ioctl(ZFS_IOC_CREATE, fsname, args, NULL);
	nvlist_free(args);
	return (error);
}
Beispiel #10
0
int
dsl_get_bookmarks_impl(dsl_dataset_t *ds, nvlist_t *props, nvlist_t *outnvl)
{
	int err = 0;
	zap_cursor_t zc;
	zap_attribute_t attr;
	dsl_pool_t *dp = ds->ds_dir->dd_pool;

	uint64_t bmark_zapobj = ds->ds_bookmarks;
	if (bmark_zapobj == 0)
		return (0);

	for (zap_cursor_init(&zc, dp->dp_meta_objset, bmark_zapobj);
	    zap_cursor_retrieve(&zc, &attr) == 0;
	    zap_cursor_advance(&zc)) {
		nvlist_t *out_props;
		char *bmark_name = attr.za_name;
		zfs_bookmark_phys_t bmark_phys = { 0 };

		err = dsl_dataset_bmark_lookup(ds, bmark_name, &bmark_phys);
		ASSERT3U(err, !=, ENOENT);
		if (err != 0)
			break;

		out_props = fnvlist_alloc();
		if (nvlist_exists(props,
		    zfs_prop_to_name(ZFS_PROP_GUID))) {
			dsl_prop_nvlist_add_uint64(out_props,
			    ZFS_PROP_GUID, bmark_phys.zbm_guid);
		}
		if (nvlist_exists(props,
		    zfs_prop_to_name(ZFS_PROP_CREATETXG))) {
			dsl_prop_nvlist_add_uint64(out_props,
			    ZFS_PROP_CREATETXG, bmark_phys.zbm_creation_txg);
		}
		if (nvlist_exists(props,
		    zfs_prop_to_name(ZFS_PROP_CREATION))) {
			dsl_prop_nvlist_add_uint64(out_props,
			    ZFS_PROP_CREATION, bmark_phys.zbm_creation_time);
		}
		if (nvlist_exists(props,
		    zfs_prop_to_name(ZFS_PROP_IVSET_GUID))) {
			dsl_prop_nvlist_add_uint64(out_props,
			    ZFS_PROP_IVSET_GUID, bmark_phys.zbm_ivset_guid);
		}

		fnvlist_add_nvlist(outnvl, bmark_name, out_props);
		fnvlist_free(out_props);
	}
	zap_cursor_fini(&zc);
	return (err);
}
Beispiel #11
0
int
lzc_clone(const char *fsname, const char *origin,
    nvlist_t *props)
{
	int error;
	nvlist_t *args = fnvlist_alloc();
	fnvlist_add_string(args, "origin", origin);
	if (props != NULL)
		fnvlist_add_nvlist(args, "props", props);
	error = lzc_ioctl(ZFS_IOC_CLONE, fsname, args, NULL);
	nvlist_free(args);
	return (error);
}
Beispiel #12
0
static void
test_destroy_snaps(const char *pool, const char *snapshot)
{
	nvlist_t *required = fnvlist_alloc();
	nvlist_t *snaps = fnvlist_alloc();

	fnvlist_add_boolean(snaps, snapshot);
	fnvlist_add_nvlist(required, "snaps", snaps);

	IOC_INPUT_TEST(ZFS_IOC_DESTROY_SNAPS, pool, required, NULL, 0);

	nvlist_free(snaps);
	nvlist_free(required);
}
Beispiel #13
0
static void
test_release(const char *pool, const char *snapshot)
{
	nvlist_t *required = fnvlist_alloc();
	nvlist_t *release = fnvlist_alloc();

	fnvlist_add_boolean(release, "libzfs_check_hold");
	fnvlist_add_nvlist(required, snapshot, release);

	IOC_INPUT_TEST_WILD(ZFS_IOC_RELEASE, pool, required, NULL, 0);

	nvlist_free(release);
	nvlist_free(required);
}
Beispiel #14
0
static void
dsl_dataset_user_hold_sync_one_impl(nvlist_t *tmpholds, dsl_dataset_t *ds,
    const char *htag, minor_t minor, uint64_t now, dmu_tx_t *tx)
{
	dsl_pool_t *dp = ds->ds_dir->dd_pool;
	objset_t *mos = dp->dp_meta_objset;
	uint64_t zapobj;

	ASSERT(RRW_WRITE_HELD(&dp->dp_config_rwlock));

	if (ds->ds_phys->ds_userrefs_obj == 0) {
		/*
		 * This is the first user hold for this dataset.  Create
		 * the userrefs zap object.
		 */
		dmu_buf_will_dirty(ds->ds_dbuf, tx);
		zapobj = ds->ds_phys->ds_userrefs_obj =
		    zap_create(mos, DMU_OT_USERREFS, DMU_OT_NONE, 0, tx);
	} else {
		zapobj = ds->ds_phys->ds_userrefs_obj;
	}
	ds->ds_userrefs++;

	VERIFY0(zap_add(mos, zapobj, htag, 8, 1, &now, tx));

	if (minor != 0) {
		char name[MAXNAMELEN];
		nvlist_t *tags;

		VERIFY0(dsl_pool_user_hold(dp, ds->ds_object,
		    htag, now, tx));
		(void) snprintf(name, sizeof (name), "%llx",
		    (u_longlong_t)ds->ds_object);

		if (nvlist_lookup_nvlist(tmpholds, name, &tags) != 0) {
			VERIFY0(nvlist_alloc(&tags, NV_UNIQUE_NAME,
			    KM_PUSHPAGE));
			fnvlist_add_boolean(tags, htag);
			fnvlist_add_nvlist(tmpholds, name, tags);
			fnvlist_free(tags);
		} else {
			fnvlist_add_boolean(tags, htag);
		}
	}

	spa_history_log_internal_ds(ds, "hold", tx,
	    "tag=%s temp=%d refs=%llu",
	    htag, minor != 0, ds->ds_userrefs);
}
Beispiel #15
0
int
lzc_create(const char *fsname, enum lzc_dataset_type type, nvlist_t *props,
    uint8_t *wkeydata, uint_t wkeylen)
{
	int error;
	nvlist_t *hidden_args = NULL;
	nvlist_t *args = fnvlist_alloc();

	fnvlist_add_int32(args, "type", (dmu_objset_type_t)type);
	if (props != NULL)
		fnvlist_add_nvlist(args, "props", props);

	if (wkeydata != NULL) {
		hidden_args = fnvlist_alloc();
		fnvlist_add_uint8_array(hidden_args, "wkeydata", wkeydata,
		    wkeylen);
		fnvlist_add_nvlist(args, ZPOOL_HIDDEN_ARGS, hidden_args);
	}

	error = lzc_ioctl(ZFS_IOC_CREATE, fsname, args, NULL);
	nvlist_free(hidden_args);
	nvlist_free(args);
	return (error);
}
Beispiel #16
0
static void
test_vdev_initialize(const char *pool)
{
	nvlist_t *required = fnvlist_alloc();
	nvlist_t *vdev_guids = fnvlist_alloc();

	fnvlist_add_uint64(vdev_guids, "path", 0xdeadbeefdeadbeef);
	fnvlist_add_uint64(required, ZPOOL_INITIALIZE_COMMAND,
	    POOL_INITIALIZE_DO);
	fnvlist_add_nvlist(required, ZPOOL_INITIALIZE_VDEVS, vdev_guids);

	IOC_INPUT_TEST(ZFS_IOC_POOL_INITIALIZE, pool, required, NULL, EINVAL);
	nvlist_free(vdev_guids);
	nvlist_free(required);
}
Beispiel #17
0
/*
 * Convert a value from the given index into the lua stack to an nvpair, adding
 * it to an nvlist with the given key.
 *
 * Values are converted as follows:
 *
 *   string -> string
 *   number -> int64
 *   boolean -> boolean
 *   nil -> boolean (no value)
 *
 * Lua tables are converted to nvlists and then inserted. The table's keys
 * are converted to strings then used as keys in the nvlist to store each table
 * element.  Keys are converted as follows:
 *
 *   string -> no change
 *   number -> "%lld"
 *   boolean -> "true" | "false"
 *   nil -> error
 *
 * In the case of a key collision, an error is thrown.
 *
 * If an error is encountered, a nonzero error code is returned, and an error
 * string will be pushed onto the Lua stack.
 */
static int
zcp_lua_to_nvlist_impl(lua_State *state, int index, nvlist_t *nvl,
    const char *key, int depth)
{
	/*
	 * Verify that we have enough remaining space in the lua stack to parse
	 * a key-value pair and push an error.
	 */
	if (!lua_checkstack(state, 3)) {
		(void) lua_pushstring(state, "Lua stack overflow");
		return (1);
	}

	index = lua_absindex(state, index);

	switch (lua_type(state, index)) {
	case LUA_TNIL:
		fnvlist_add_boolean(nvl, key);
		break;
	case LUA_TBOOLEAN:
		fnvlist_add_boolean_value(nvl, key,
		    lua_toboolean(state, index));
		break;
	case LUA_TNUMBER:
		fnvlist_add_int64(nvl, key, lua_tonumber(state, index));
		break;
	case LUA_TSTRING:
		fnvlist_add_string(nvl, key, lua_tostring(state, index));
		break;
	case LUA_TTABLE: {
		nvlist_t *value_nvl = zcp_table_to_nvlist(state, index, depth);
		if (value_nvl == NULL)
			return (EINVAL);

		fnvlist_add_nvlist(nvl, key, value_nvl);
		fnvlist_free(value_nvl);
		break;
	}
	default:
		(void) lua_pushfstring(state,
		    "Invalid value type '%s' for key '%s'",
		    lua_typename(state, lua_type(state, index)), key);
		return (EINVAL);
	}

	return (0);
}
Beispiel #18
0
static void
test_load_key(const char *dataset)
{
	nvlist_t *required = fnvlist_alloc();
	nvlist_t *optional = fnvlist_alloc();
	nvlist_t *hidden = fnvlist_alloc();
	uint8_t keydata[WRAPPING_KEY_LEN] = {0};

	fnvlist_add_uint8_array(hidden, "wkeydata", keydata, sizeof (keydata));
	fnvlist_add_nvlist(required, "hidden_args", hidden);
	fnvlist_add_boolean(optional, "noop");

	IOC_INPUT_TEST(ZFS_IOC_LOAD_KEY, dataset, required, optional, EINVAL);
	nvlist_free(hidden);
	nvlist_free(optional);
	nvlist_free(required);
}
Beispiel #19
0
static void
test_hold(const char *pool, const char *snapshot)
{
	nvlist_t *required = fnvlist_alloc();
	nvlist_t *optional = fnvlist_alloc();
	nvlist_t *holds = fnvlist_alloc();

	fnvlist_add_string(holds, snapshot, "libzfs_check_hold");
	fnvlist_add_nvlist(required, "holds", holds);
	fnvlist_add_int32(optional, "cleanup_fd", zfs_fd);

	IOC_INPUT_TEST(ZFS_IOC_HOLD, pool, required, optional, 0);

	nvlist_free(holds);
	nvlist_free(optional);
	nvlist_free(required);
}
Beispiel #20
0
static int
lzc_channel_program_impl(const char *pool, const char *program, boolean_t sync,
    uint64_t instrlimit, uint64_t memlimit, nvlist_t *argnvl, nvlist_t **outnvl)
{
	int error;
	nvlist_t *args;

	args = fnvlist_alloc();
	fnvlist_add_string(args, ZCP_ARG_PROGRAM, program);
	fnvlist_add_nvlist(args, ZCP_ARG_ARGLIST, argnvl);
	fnvlist_add_boolean_value(args, ZCP_ARG_SYNC, sync);
	fnvlist_add_uint64(args, ZCP_ARG_INSTRLIMIT, instrlimit);
	fnvlist_add_uint64(args, ZCP_ARG_MEMLIMIT, memlimit);
	error = lzc_ioctl(ZFS_IOC_CHANNEL_PROGRAM, pool, args, outnvl);
	fnvlist_free(args);

	return (error);
}
Beispiel #21
0
static void
test_create(const char *pool)
{
	char dataset[MAXNAMELEN + 32];

	(void) snprintf(dataset, sizeof (dataset), "%s/create-fs", pool);

	nvlist_t *required = fnvlist_alloc();
	nvlist_t *optional = fnvlist_alloc();
	nvlist_t *props = fnvlist_alloc();

	fnvlist_add_int32(required, "type", DMU_OST_ZFS);
	fnvlist_add_uint64(props, "recordsize", 8192);
	fnvlist_add_nvlist(optional, "props", props);

	IOC_INPUT_TEST(ZFS_IOC_CREATE, dataset, required, optional, 0);

	nvlist_free(required);
	nvlist_free(optional);
}
Beispiel #22
0
/*
 * Performs key management functions
 *
 * crypto_cmd should be a value from zfs_ioc_crypto_cmd_t. If the command
 * specifies to load or change a wrapping key, the key should be specified in
 * the hidden_args nvlist so that it is not logged
 */
int
lzc_load_key(const char *fsname, boolean_t noop, uint8_t *wkeydata,
    uint_t wkeylen)
{
	int error;
	nvlist_t *ioc_args;
	nvlist_t *hidden_args;

	if (wkeydata == NULL)
		return (EINVAL);

	ioc_args = fnvlist_alloc();
	hidden_args = fnvlist_alloc();
	fnvlist_add_uint8_array(hidden_args, "wkeydata", wkeydata, wkeylen);
	fnvlist_add_nvlist(ioc_args, ZPOOL_HIDDEN_ARGS, hidden_args);
	if (noop)
		fnvlist_add_boolean(ioc_args, "noop");
	error = lzc_ioctl(ZFS_IOC_LOAD_KEY, fsname, ioc_args, NULL);
	nvlist_free(hidden_args);
	nvlist_free(ioc_args);

	return (error);
}
Beispiel #23
0
/*
 * Create "user holds" on snapshots.  If there is a hold on a snapshot,
 * the snapshot can not be destroyed.  (However, it can be marked for deletion
 * by lzc_destroy_snaps(defer=B_TRUE).)
 *
 * The keys in the nvlist are snapshot names.
 * The snapshots must all be in the same pool.
 * The value is the name of the hold (string type).
 *
 * If cleanup_fd is not -1, it must be the result of open("/dev/zfs", O_EXCL).
 * In this case, when the cleanup_fd is closed (including on process
 * termination), the holds will be released.  If the system is shut down
 * uncleanly, the holds will be released when the pool is next opened
 * or imported.
 *
 * Holds for snapshots which don't exist will be skipped and have an entry
 * added to errlist, but will not cause an overall failure.
 *
 * The return value will be 0 if all holds, for snapshots that existed,
 * were succesfully created.
 *
 * Otherwise the return value will be the errno of a (unspecified) hold that
 * failed and no holds will be created.
 *
 * In all cases the errlist will have an entry for each hold that failed
 * (name = snapshot), with its value being the error code (int32).
 */
int
lzc_hold(nvlist_t *holds, int cleanup_fd, nvlist_t **errlist)
{
	char pool[MAXNAMELEN];
	nvlist_t *args;
	nvpair_t *elem;
	int error;

	/* determine the pool name */
	elem = nvlist_next_nvpair(holds, NULL);
	if (elem == NULL)
		return (0);
	(void) strlcpy(pool, nvpair_name(elem), sizeof (pool));
	pool[strcspn(pool, "/@")] = '\0';

	args = fnvlist_alloc();
	fnvlist_add_nvlist(args, "holds", holds);
	if (cleanup_fd != -1)
		fnvlist_add_int32(args, "cleanup_fd", cleanup_fd);

	error = lzc_ioctl(ZFS_IOC_HOLD, pool, args, errlist);
	nvlist_free(args);
	return (error);
}
Beispiel #24
0
/*
 * Generate the pool's configuration based on the current in-core state.
 *
 * We infer whether to generate a complete config or just one top-level config
 * based on whether vd is the root vdev.
 */
nvlist_t *
spa_config_generate(spa_t *spa, vdev_t *vd, uint64_t txg, int getstats)
{
	nvlist_t *config, *nvroot;
	vdev_t *rvd = spa->spa_root_vdev;
	unsigned long hostid = 0;
	boolean_t locked = B_FALSE;
	uint64_t split_guid;
	char *pool_name;
	int config_gen_flags = 0;

	if (vd == NULL) {
		vd = rvd;
		locked = B_TRUE;
		spa_config_enter(spa, SCL_CONFIG | SCL_STATE, FTAG, RW_READER);
	}

	ASSERT(spa_config_held(spa, SCL_CONFIG | SCL_STATE, RW_READER) ==
	    (SCL_CONFIG | SCL_STATE));

	/*
	 * If txg is -1, report the current value of spa->spa_config_txg.
	 */
	if (txg == -1ULL)
		txg = spa->spa_config_txg;

	/*
	 * Originally, users had to handle spa namespace collisions by either
	 * exporting the already imported pool or by specifying a new name for
	 * the pool with a conflicting name. In the case of root pools from
	 * virtual guests, neither approach to collision resolution is
	 * reasonable. This is addressed by extending the new name syntax with
	 * an option to specify that the new name is temporary. When specified,
	 * ZFS_IMPORT_TEMP_NAME will be set in spa->spa_import_flags to tell us
	 * to use the previous name, which we do below.
	 */
	if (spa->spa_import_flags & ZFS_IMPORT_TEMP_NAME) {
		VERIFY0(nvlist_lookup_string(spa->spa_config,
		    ZPOOL_CONFIG_POOL_NAME, &pool_name));
	} else
		pool_name = spa_name(spa);

	config = fnvlist_alloc();

	fnvlist_add_uint64(config, ZPOOL_CONFIG_VERSION, spa_version(spa));
	fnvlist_add_string(config, ZPOOL_CONFIG_POOL_NAME, pool_name);
	fnvlist_add_uint64(config, ZPOOL_CONFIG_POOL_STATE, spa_state(spa));
	fnvlist_add_uint64(config, ZPOOL_CONFIG_POOL_TXG, txg);
	fnvlist_add_uint64(config, ZPOOL_CONFIG_POOL_GUID, spa_guid(spa));
	fnvlist_add_uint64(config, ZPOOL_CONFIG_ERRATA, spa->spa_errata);
	if (spa->spa_comment != NULL)
		fnvlist_add_string(config, ZPOOL_CONFIG_COMMENT,
		    spa->spa_comment);

#ifdef	_KERNEL
	hostid = zone_get_hostid(NULL);
#else	/* _KERNEL */
	/*
	 * We're emulating the system's hostid in userland, so we can't use
	 * zone_get_hostid().
	 */
	(void) ddi_strtoul(hw_serial, NULL, 10, &hostid);
#endif	/* _KERNEL */
	if (hostid != 0)
		fnvlist_add_uint64(config, ZPOOL_CONFIG_HOSTID, hostid);
	fnvlist_add_string(config, ZPOOL_CONFIG_HOSTNAME, utsname()->nodename);

	if (vd != rvd) {
		fnvlist_add_uint64(config, ZPOOL_CONFIG_TOP_GUID,
		    vd->vdev_top->vdev_guid);
		fnvlist_add_uint64(config, ZPOOL_CONFIG_GUID,
		    vd->vdev_guid);
		if (vd->vdev_isspare)
			fnvlist_add_uint64(config,
			    ZPOOL_CONFIG_IS_SPARE, 1ULL);
		if (vd->vdev_islog)
			fnvlist_add_uint64(config,
			    ZPOOL_CONFIG_IS_LOG, 1ULL);
		vd = vd->vdev_top;		/* label contains top config */
	} else {
		/*
		 * Only add the (potentially large) split information
		 * in the mos config, and not in the vdev labels
		 */
		if (spa->spa_config_splitting != NULL)
			fnvlist_add_nvlist(config, ZPOOL_CONFIG_SPLIT,
			    spa->spa_config_splitting);

		fnvlist_add_boolean(config, ZPOOL_CONFIG_HAS_PER_VDEV_ZAPS);

		config_gen_flags |= VDEV_CONFIG_MOS;
	}

	/*
	 * Add the top-level config.  We even add this on pools which
	 * don't support holes in the namespace.
	 */
	vdev_top_config_generate(spa, config);

	/*
	 * If we're splitting, record the original pool's guid.
	 */
	if (spa->spa_config_splitting != NULL &&
	    nvlist_lookup_uint64(spa->spa_config_splitting,
	    ZPOOL_CONFIG_SPLIT_GUID, &split_guid) == 0) {
		fnvlist_add_uint64(config, ZPOOL_CONFIG_SPLIT_GUID, split_guid);
	}

	nvroot = vdev_config_generate(spa, vd, getstats, config_gen_flags);
	fnvlist_add_nvlist(config, ZPOOL_CONFIG_VDEV_TREE, nvroot);
	nvlist_free(nvroot);

	/*
	 * Store what's necessary for reading the MOS in the label.
	 */
	fnvlist_add_nvlist(config, ZPOOL_CONFIG_FEATURES_FOR_READ,
	    spa->spa_label_features);

	if (getstats && spa_load_state(spa) == SPA_LOAD_NONE) {
		ddt_histogram_t *ddh;
		ddt_stat_t *dds;
		ddt_object_t *ddo;

		ddh = kmem_zalloc(sizeof (ddt_histogram_t), KM_SLEEP);
		ddt_get_dedup_histogram(spa, ddh);
		fnvlist_add_uint64_array(config,
		    ZPOOL_CONFIG_DDT_HISTOGRAM,
		    (uint64_t *)ddh, sizeof (*ddh) / sizeof (uint64_t));
		kmem_free(ddh, sizeof (ddt_histogram_t));

		ddo = kmem_zalloc(sizeof (ddt_object_t), KM_SLEEP);
		ddt_get_dedup_object_stats(spa, ddo);
		fnvlist_add_uint64_array(config,
		    ZPOOL_CONFIG_DDT_OBJ_STATS,
		    (uint64_t *)ddo, sizeof (*ddo) / sizeof (uint64_t));
		kmem_free(ddo, sizeof (ddt_object_t));

		dds = kmem_zalloc(sizeof (ddt_stat_t), KM_SLEEP);
		ddt_get_dedup_stats(spa, dds);
		fnvlist_add_uint64_array(config,
		    ZPOOL_CONFIG_DDT_STATS,
		    (uint64_t *)dds, sizeof (*dds) / sizeof (uint64_t));
		kmem_free(dds, sizeof (ddt_stat_t));
	}

	if (locked)
		spa_config_exit(spa, SCL_CONFIG | SCL_STATE, FTAG);

	return (config);
}
Beispiel #25
0
static int
lzc_ioctl(zfs_ioc_t ioc, const char *name,
    nvlist_t *source, nvlist_t **resultp)
{
	zfs_cmd_t zc = { 0 };
	int error = 0;
	char *packed;
#ifdef __FreeBSD__
	nvlist_t *oldsource;
#endif
	size_t size;

	ASSERT3S(g_refcount, >, 0);

	(void) strlcpy(zc.zc_name, name, sizeof (zc.zc_name));

#ifdef __FreeBSD__
	if (zfs_ioctl_version == ZFS_IOCVER_UNDEF)
		zfs_ioctl_version = get_zfs_ioctl_version();

	if (zfs_ioctl_version < ZFS_IOCVER_LZC) {
		oldsource = source;
		error = lzc_compat_pre(&zc, &ioc, &source);
		if (error)
			return (error);
	}
#endif

	packed = fnvlist_pack(source, &size);
	zc.zc_nvlist_src = (uint64_t)(uintptr_t)packed;
	zc.zc_nvlist_src_size = size;

	if (resultp != NULL) {
		*resultp = NULL;
		zc.zc_nvlist_dst_size = MAX(size * 2, 128 * 1024);
		zc.zc_nvlist_dst = (uint64_t)(uintptr_t)
		    malloc(zc.zc_nvlist_dst_size);
#ifdef illumos
		if (zc.zc_nvlist_dst == NULL) {
#else
		if (zc.zc_nvlist_dst == 0) {
#endif
			error = ENOMEM;
			goto out;
		}
	}

	while (ioctl(g_fd, ioc, &zc) != 0) {
		if (errno == ENOMEM && resultp != NULL) {
			free((void *)(uintptr_t)zc.zc_nvlist_dst);
			zc.zc_nvlist_dst_size *= 2;
			zc.zc_nvlist_dst = (uint64_t)(uintptr_t)
			    malloc(zc.zc_nvlist_dst_size);
#ifdef illumos
			if (zc.zc_nvlist_dst == NULL) {
#else
			if (zc.zc_nvlist_dst == 0) {
#endif
				error = ENOMEM;
				goto out;
			}
		} else {
			error = errno;
			break;
		}
	}

#ifdef __FreeBSD__
	if (zfs_ioctl_version < ZFS_IOCVER_LZC)
		lzc_compat_post(&zc, ioc);
#endif
	if (zc.zc_nvlist_dst_filled) {
		*resultp = fnvlist_unpack((void *)(uintptr_t)zc.zc_nvlist_dst,
		    zc.zc_nvlist_dst_size);
	}
#ifdef __FreeBSD__
	if (zfs_ioctl_version < ZFS_IOCVER_LZC)
		lzc_compat_outnvl(&zc, ioc, resultp);
#endif
out:
#ifdef __FreeBSD__
	if (zfs_ioctl_version < ZFS_IOCVER_LZC) {
		if (source != oldsource)
			nvlist_free(source);
		source = oldsource;
	}
#endif
	fnvlist_pack_free(packed, size);
	free((void *)(uintptr_t)zc.zc_nvlist_dst);
	return (error);
}

int
lzc_create(const char *fsname, enum lzc_dataset_type type, nvlist_t *props)
{
	int error;
	nvlist_t *args = fnvlist_alloc();
	fnvlist_add_int32(args, "type", (dmu_objset_type_t)type);
	if (props != NULL)
		fnvlist_add_nvlist(args, "props", props);
	error = lzc_ioctl(ZFS_IOC_CREATE, fsname, args, NULL);
	nvlist_free(args);
	return (error);
}
Beispiel #26
0
/*
 * Linux adds ZFS_IOC_RECV_NEW for resumable and raw streams and preserves the
 * legacy ZFS_IOC_RECV user/kernel interface.  The new interface supports all
 * stream options but is currently only used for resumable streams.  This way
 * updated user space utilities will interoperate with older kernel modules.
 *
 * Non-Linux OpenZFS platforms have opted to modify the legacy interface.
 */
static int
recv_impl(const char *snapname, nvlist_t *recvdprops, nvlist_t *localprops,
    const char *origin, boolean_t force, boolean_t resumable, boolean_t raw,
    int input_fd, const dmu_replay_record_t *begin_record, int cleanup_fd,
    uint64_t *read_bytes, uint64_t *errflags, uint64_t *action_handle,
    nvlist_t **errors)
{
	dmu_replay_record_t drr;
	char fsname[MAXPATHLEN];
	char *atp;
	int error;

	ASSERT3S(g_refcount, >, 0);
	VERIFY3S(g_fd, !=, -1);

	/* Set 'fsname' to the name of containing filesystem */
	(void) strlcpy(fsname, snapname, sizeof (fsname));
	atp = strchr(fsname, '@');
	if (atp == NULL)
		return (EINVAL);
	*atp = '\0';

	/* If the fs does not exist, try its parent. */
	if (!lzc_exists(fsname)) {
		char *slashp = strrchr(fsname, '/');
		if (slashp == NULL)
			return (ENOENT);
		*slashp = '\0';
	}

	/*
	 * The begin_record is normally a non-byteswapped BEGIN record.
	 * For resumable streams it may be set to any non-byteswapped
	 * dmu_replay_record_t.
	 */
	if (begin_record == NULL) {
		error = recv_read(input_fd, &drr, sizeof (drr));
		if (error != 0)
			return (error);
	} else {
		drr = *begin_record;
	}

	if (resumable || raw) {
		nvlist_t *outnvl = NULL;
		nvlist_t *innvl = fnvlist_alloc();

		fnvlist_add_string(innvl, "snapname", snapname);

		if (recvdprops != NULL)
			fnvlist_add_nvlist(innvl, "props", recvdprops);

		if (localprops != NULL)
			fnvlist_add_nvlist(innvl, "localprops", localprops);

		if (origin != NULL && strlen(origin))
			fnvlist_add_string(innvl, "origin", origin);

		fnvlist_add_byte_array(innvl, "begin_record",
		    (uchar_t *)&drr, sizeof (drr));

		fnvlist_add_int32(innvl, "input_fd", input_fd);

		if (force)
			fnvlist_add_boolean(innvl, "force");

		if (resumable)
			fnvlist_add_boolean(innvl, "resumable");

		if (cleanup_fd >= 0)
			fnvlist_add_int32(innvl, "cleanup_fd", cleanup_fd);

		if (action_handle != NULL)
			fnvlist_add_uint64(innvl, "action_handle",
			    *action_handle);

		error = lzc_ioctl(ZFS_IOC_RECV_NEW, fsname, innvl, &outnvl);

		if (error == 0 && read_bytes != NULL)
			error = nvlist_lookup_uint64(outnvl, "read_bytes",
			    read_bytes);

		if (error == 0 && errflags != NULL)
			error = nvlist_lookup_uint64(outnvl, "error_flags",
			    errflags);

		if (error == 0 && action_handle != NULL)
			error = nvlist_lookup_uint64(outnvl, "action_handle",
			    action_handle);

		if (error == 0 && errors != NULL) {
			nvlist_t *nvl;
			error = nvlist_lookup_nvlist(outnvl, "errors", &nvl);
			if (error == 0)
				*errors = fnvlist_dup(nvl);
		}

		fnvlist_free(innvl);
		fnvlist_free(outnvl);
	} else {
		zfs_cmd_t zc = {"\0"};
		char *packed = NULL;
		size_t size;

		ASSERT3S(g_refcount, >, 0);

		(void) strlcpy(zc.zc_name, fsname, sizeof (zc.zc_value));
		(void) strlcpy(zc.zc_value, snapname, sizeof (zc.zc_value));

		if (recvdprops != NULL) {
			packed = fnvlist_pack(recvdprops, &size);
			zc.zc_nvlist_src = (uint64_t)(uintptr_t)packed;
			zc.zc_nvlist_src_size = size;
		}

		if (localprops != NULL) {
			packed = fnvlist_pack(localprops, &size);
			zc.zc_nvlist_conf = (uint64_t)(uintptr_t)packed;
			zc.zc_nvlist_conf_size = size;
		}

		if (origin != NULL)
			(void) strlcpy(zc.zc_string, origin,
			    sizeof (zc.zc_string));

		ASSERT3S(drr.drr_type, ==, DRR_BEGIN);
		zc.zc_begin_record = drr.drr_u.drr_begin;
		zc.zc_guid = force;
		zc.zc_cookie = input_fd;
		zc.zc_cleanup_fd = -1;
		zc.zc_action_handle = 0;

		if (cleanup_fd >= 0)
			zc.zc_cleanup_fd = cleanup_fd;

		if (action_handle != NULL)
			zc.zc_action_handle = *action_handle;

		zc.zc_nvlist_dst_size = 128 * 1024;
		zc.zc_nvlist_dst = (uint64_t)(uintptr_t)
		    malloc(zc.zc_nvlist_dst_size);

		error = ioctl(g_fd, ZFS_IOC_RECV, &zc);
		if (error != 0) {
			error = errno;
		} else {
			if (read_bytes != NULL)
				*read_bytes = zc.zc_cookie;

			if (errflags != NULL)
				*errflags = zc.zc_obj;

			if (action_handle != NULL)
				*action_handle = zc.zc_action_handle;

			if (errors != NULL)
				VERIFY0(nvlist_unpack(
				    (void *)(uintptr_t)zc.zc_nvlist_dst,
				    zc.zc_nvlist_dst_size, errors, KM_SLEEP));
		}

		if (packed != NULL)
			fnvlist_pack_free(packed, size);
		free((void *)(uintptr_t)zc.zc_nvlist_dst);
	}

	return (error);
}
Beispiel #27
0
static void
run_tests(void)
{
	const char *key = "key";

	/* Note: maximum nvlist key length is 32KB */
	int len = 1024 * 31;
	char *bigstring = malloc(len);
	for (int i = 0; i < len; i++)
		bigstring[i] = 'a' + i % 26;
	bigstring[len - 1] = '\0';

	nvl = fnvlist_alloc();

	fnvlist_add_boolean(nvl, key);
	test("boolean", B_TRUE, B_FALSE);

	fnvlist_add_boolean_value(nvl, key, B_TRUE);
	test("boolean_value", B_FALSE, B_FALSE);

	fnvlist_add_byte(nvl, key, 1);
	test("byte", B_FALSE, B_FALSE);

	fnvlist_add_int8(nvl, key, 1);
	test("int8", B_FALSE, B_FALSE);

	fnvlist_add_uint8(nvl, key, 1);
	test("uint8", B_FALSE, B_FALSE);

	fnvlist_add_int16(nvl, key, 1);
	test("int16", B_FALSE, B_FALSE);

	fnvlist_add_uint16(nvl, key, 1);
	test("uint16", B_FALSE, B_FALSE);

	fnvlist_add_int32(nvl, key, 1);
	test("int32", B_FALSE, B_FALSE);

	fnvlist_add_uint32(nvl, key, 1);
	test("uint32", B_FALSE, B_FALSE);

	fnvlist_add_int64(nvl, key, 1);
	test("int64", B_TRUE, B_TRUE);

	fnvlist_add_uint64(nvl, key, 1);
	test("uint64", B_FALSE, B_FALSE);

	fnvlist_add_string(nvl, key, "1");
	test("string", B_TRUE, B_TRUE);


	{
		nvlist_t *val = fnvlist_alloc();
		fnvlist_add_string(val, "subkey", "subvalue");
		fnvlist_add_nvlist(nvl, key, val);
		fnvlist_free(val);
		test("nvlist", B_TRUE, B_TRUE);
	}
	{
		boolean_t val[2] = { B_FALSE, B_TRUE };
		fnvlist_add_boolean_array(nvl, key, val, 2);
		test("boolean_array", B_FALSE, B_FALSE);
	}
	{
		uchar_t val[2] = { 0, 1 };
		fnvlist_add_byte_array(nvl, key, val, 2);
		test("byte_array", B_FALSE, B_FALSE);
	}
	{
		int8_t val[2] = { 0, 1 };
		fnvlist_add_int8_array(nvl, key, val, 2);
		test("int8_array", B_FALSE, B_FALSE);
	}
	{
		uint8_t val[2] = { 0, 1 };
		fnvlist_add_uint8_array(nvl, key, val, 2);
		test("uint8_array", B_FALSE, B_FALSE);
	}
	{
		int16_t val[2] = { 0, 1 };
		fnvlist_add_int16_array(nvl, key, val, 2);
		test("int16_array", B_FALSE, B_FALSE);
	}
	{
		uint16_t val[2] = { 0, 1 };
		fnvlist_add_uint16_array(nvl, key, val, 2);
		test("uint16_array", B_FALSE, B_FALSE);
	}
	{
		int32_t val[2] = { 0, 1 };
		fnvlist_add_int32_array(nvl, key, val, 2);
		test("int32_array", B_FALSE, B_FALSE);
	}
	{
		uint32_t val[2] = { 0, 1 };
		fnvlist_add_uint32_array(nvl, key, val, 2);
		test("uint32_array", B_FALSE, B_FALSE);
	}
	{
		int64_t val[2] = { 0, 1 };
		fnvlist_add_int64_array(nvl, key, val, 2);
		test("int64_array", B_TRUE, B_FALSE);
	}
	{
		uint64_t val[2] = { 0, 1 };
		fnvlist_add_uint64_array(nvl, key, val, 2);
		test("uint64_array", B_FALSE, B_FALSE);
	}
	{
		char *const val[2] = { "0", "1" };
		fnvlist_add_string_array(nvl, key, val, 2);
		test("string_array", B_TRUE, B_FALSE);
	}
	{
		nvlist_t *val[2];
		val[0] = fnvlist_alloc();
		fnvlist_add_string(val[0], "subkey", "subvalue");
		val[1] = fnvlist_alloc();
		fnvlist_add_string(val[1], "subkey2", "subvalue2");
		fnvlist_add_nvlist_array(nvl, key, val, 2);
		fnvlist_free(val[0]);
		fnvlist_free(val[1]);
		test("nvlist_array", B_FALSE, B_FALSE);
	}
	{
		fnvlist_add_string(nvl, bigstring, "1");
		test("large_key", B_TRUE, B_TRUE);
	}
	{
		fnvlist_add_string(nvl, key, bigstring);
		test("large_value", B_TRUE, B_TRUE);
	}
	{
		for (int i = 0; i < 1024; i++) {
			char buf[32];
			(void) snprintf(buf, sizeof (buf), "key-%u", i);
			fnvlist_add_int64(nvl, buf, i);
		}
		test("many_keys", B_TRUE, B_TRUE);
	}
#ifndef __sparc__
	{
		for (int i = 0; i < 10; i++) {
			nvlist_t *newval = fnvlist_alloc();
			fnvlist_add_nvlist(newval, "key", nvl);
			fnvlist_free(nvl);
			nvl = newval;
		}
		test("deeply_nested_pos", B_TRUE, B_TRUE);
	}
	{
		for (int i = 0; i < 90; i++) {
			nvlist_t *newval = fnvlist_alloc();
			fnvlist_add_nvlist(newval, "key", nvl);
			fnvlist_free(nvl);
			nvl = newval;
		}
		test("deeply_nested_neg", B_FALSE, B_FALSE);
	}
#endif
	free(bigstring);
	fnvlist_free(nvl);
}
Beispiel #28
0
/*
 * Synchronize pool configuration to disk.  This must be called with the
 * namespace lock held. Synchronizing the pool cache is typically done after
 * the configuration has been synced to the MOS. This exposes a window where
 * the MOS config will have been updated but the cache file has not. If
 * the system were to crash at that instant then the cached config may not
 * contain the correct information to open the pool and an explicit import
 * would be required.
 */
void
spa_config_sync(spa_t *target, boolean_t removing, boolean_t postsysevent)
{
	spa_config_dirent_t *dp, *tdp;
	nvlist_t *nvl;
	char *pool_name;
	boolean_t ccw_failure;
	int error = 0;

	ASSERT(MUTEX_HELD(&spa_namespace_lock));

	if (rootdir == NULL || !(spa_mode_global & FWRITE))
		return;

	/*
	 * Iterate over all cachefiles for the pool, past or present.  When the
	 * cachefile is changed, the new one is pushed onto this list, allowing
	 * us to update previous cachefiles that no longer contain this pool.
	 */
	ccw_failure = B_FALSE;
	for (dp = list_head(&target->spa_config_list); dp != NULL;
	    dp = list_next(&target->spa_config_list, dp)) {
		spa_t *spa = NULL;
		if (dp->scd_path == NULL)
			continue;

		/*
		 * Iterate over all pools, adding any matching pools to 'nvl'.
		 */
		nvl = NULL;
		while ((spa = spa_next(spa)) != NULL) {
			/*
			 * Skip over our own pool if we're about to remove
			 * ourselves from the spa namespace or any pool that
			 * is readonly. Since we cannot guarantee that a
			 * readonly pool would successfully import upon reboot,
			 * we don't allow them to be written to the cache file.
			 */
			if ((spa == target && removing) ||
			    !spa_writeable(spa))
				continue;

			mutex_enter(&spa->spa_props_lock);
			tdp = list_head(&spa->spa_config_list);
			if (spa->spa_config == NULL ||
			    tdp == NULL ||
			    tdp->scd_path == NULL ||
			    strcmp(tdp->scd_path, dp->scd_path) != 0) {
				mutex_exit(&spa->spa_props_lock);
				continue;
			}

			if (nvl == NULL)
				nvl = fnvlist_alloc();

			if (spa->spa_import_flags & ZFS_IMPORT_TEMP_NAME)
				pool_name = fnvlist_lookup_string(
				    spa->spa_config, ZPOOL_CONFIG_POOL_NAME);
			else
				pool_name = spa_name(spa);

			fnvlist_add_nvlist(nvl, pool_name, spa->spa_config);
			mutex_exit(&spa->spa_props_lock);
		}

		error = spa_config_write(dp, nvl);
		if (error != 0)
			ccw_failure = B_TRUE;
		nvlist_free(nvl);
	}

	if (ccw_failure) {
		/*
		 * Keep trying so that configuration data is
		 * written if/when any temporary filesystem
		 * resource issues are resolved.
		 */
		if (target->spa_ccw_fail_time == 0) {
			zfs_ereport_post(FM_EREPORT_ZFS_CONFIG_CACHE_WRITE,
			    target, NULL, NULL, 0, 0);
		}
		target->spa_ccw_fail_time = gethrtime();
		spa_async_request(target, SPA_ASYNC_CONFIG_UPDATE);
	} else {
		/*
		 * Do not rate limit future attempts to update
		 * the config cache.
		 */
		target->spa_ccw_fail_time = 0;
	}

	/*
	 * Remove any config entries older than the current one.
	 */
	dp = list_head(&target->spa_config_list);
	while ((tdp = list_next(&target->spa_config_list, dp)) != NULL) {
		list_remove(&target->spa_config_list, tdp);
		if (tdp->scd_path != NULL)
			spa_strfree(tdp->scd_path);
		kmem_free(tdp, sizeof (spa_config_dirent_t));
	}

	spa_config_generation++;

	if (postsysevent)
		spa_event_notify(target, NULL, ESC_ZFS_CONFIG_SYNC);
}
Beispiel #29
0
static int
dsl_dataset_user_release_check_one(dsl_dataset_user_release_arg_t *ddura,
    dsl_dataset_t *ds, nvlist_t *holds, const char *snapname)
{
	uint64_t zapobj;
	nvlist_t *holds_found;
	objset_t *mos;
	int numholds;

	if (!dsl_dataset_is_snapshot(ds))
		return (SET_ERROR(EINVAL));

	if (nvlist_empty(holds))
		return (0);

	numholds = 0;
	mos = ds->ds_dir->dd_pool->dp_meta_objset;
	zapobj = ds->ds_phys->ds_userrefs_obj;
	holds_found = fnvlist_alloc();

	for (nvpair_t *pair = nvlist_next_nvpair(holds, NULL); pair != NULL;
	    pair = nvlist_next_nvpair(holds, pair)) {
		uint64_t tmp;
		int error;
		const char *holdname = nvpair_name(pair);

		if (zapobj != 0)
			error = zap_lookup(mos, zapobj, holdname, 8, 1, &tmp);
		else
			error = SET_ERROR(ENOENT);

		/*
		 * Non-existent holds are put on the errlist, but don't
		 * cause an overall failure.
		 */
		if (error == ENOENT) {
			if (ddura->ddura_errlist != NULL) {
				char *errtag = kmem_asprintf("%s#%s",
				    snapname, holdname);
				fnvlist_add_int32(ddura->ddura_errlist, errtag,
				    ENOENT);
				strfree(errtag);
			}
			continue;
		}

		if (error != 0) {
			fnvlist_free(holds_found);
			return (error);
		}

		fnvlist_add_boolean(holds_found, holdname);
		numholds++;
	}

	if (DS_IS_DEFER_DESTROY(ds) && ds->ds_phys->ds_num_children == 1 &&
	    ds->ds_userrefs == numholds) {
		/* we need to destroy the snapshot as well */
		if (dsl_dataset_long_held(ds)) {
			fnvlist_free(holds_found);
			return (SET_ERROR(EBUSY));
		}
		fnvlist_add_boolean(ddura->ddura_todelete, snapname);
	}

	if (numholds != 0) {
		fnvlist_add_nvlist(ddura->ddura_chkholds, snapname,
		    holds_found);
	}
	fnvlist_free(holds_found);

	return (0);
}
Beispiel #30
0
/*
 * Test each ioc for the folowing ioctl input errors:
 *   ZFS_ERR_IOC_ARG_UNAVAIL	an input argument is not supported by kernel
 *   ZFS_ERR_IOC_ARG_REQUIRED	a required input argument is missing
 *   ZFS_ERR_IOC_ARG_BADTYPE	an input argument has an invalid type
 */
static int
lzc_ioctl_test(zfs_ioc_t ioc, const char *name, nvlist_t *required,
    nvlist_t *optional, int expected_error, boolean_t wildcard)
{
	nvlist_t *input = fnvlist_alloc();
	nvlist_t *future = fnvlist_alloc();
	int error = 0;

	if (required != NULL) {
		for (nvpair_t *pair = nvlist_next_nvpair(required, NULL);
		    pair != NULL; pair = nvlist_next_nvpair(required, pair)) {
			fnvlist_add_nvpair(input, pair);
		}
	}
	if (optional != NULL) {
		for (nvpair_t *pair = nvlist_next_nvpair(optional, NULL);
		    pair != NULL; pair = nvlist_next_nvpair(optional, pair)) {
			fnvlist_add_nvpair(input, pair);
		}
	}

	/*
	 * Generic input run with 'optional' nvlist pair
	 */
	if (!wildcard)
		fnvlist_add_nvlist(input, "optional", future);
	lzc_ioctl_run(ioc, name, input, expected_error);
	if (!wildcard)
		fnvlist_remove(input, "optional");

	/*
	 * Bogus input value
	 */
	if (!wildcard) {
		fnvlist_add_string(input, "bogus_input", "bogus");
		lzc_ioctl_run(ioc, name, input, ZFS_ERR_IOC_ARG_UNAVAIL);
		fnvlist_remove(input, "bogus_input");
	}

	/*
	 * Missing required inputs
	 */
	if (required != NULL) {
		nvlist_t *empty = fnvlist_alloc();
		lzc_ioctl_run(ioc, name, empty, ZFS_ERR_IOC_ARG_REQUIRED);
		nvlist_free(empty);
	}

	/*
	 * Wrong nvpair type
	 */
	if (required != NULL || optional != NULL) {
		/*
		 * switch the type of one of the input pairs
		 */
		for (nvpair_t *pair = nvlist_next_nvpair(input, NULL);
		    pair != NULL; pair = nvlist_next_nvpair(input, pair)) {
			char pname[MAXNAMELEN];
			data_type_t ptype;

			strlcpy(pname, nvpair_name(pair), sizeof (pname));
			pname[sizeof (pname) - 1] = '\0';
			ptype = nvpair_type(pair);
			fnvlist_remove_nvpair(input, pair);

			switch (ptype) {
			case DATA_TYPE_STRING:
				fnvlist_add_uint64(input, pname, 42);
				break;
			default:
				fnvlist_add_string(input, pname, "bogus");
				break;
			}
		}
		lzc_ioctl_run(ioc, name, input, ZFS_ERR_IOC_ARG_BADTYPE);
	}

	nvlist_free(future);
	nvlist_free(input);

	return (error);
}