1 /* 2 * CDDL HEADER START 3 * 4 * The contents of this file are subject to the terms of the 5 * Common Development and Distribution License (the "License"). 6 * You may not use this file except in compliance with the License. 7 * 8 * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE 9 * or http://www.opensolaris.org/os/licensing. 10 * See the License for the specific language governing permissions 11 * and limitations under the License. 12 * 13 * When distributing Covered Code, include this CDDL HEADER in each 14 * file and include the License file at usr/src/OPENSOLARIS.LICENSE. 15 * If applicable, add the following below this CDDL HEADER, with the 16 * fields enclosed by brackets "[]" replaced with your own identifying 17 * information: Portions Copyright [yyyy] [name of copyright owner] 18 * 19 * CDDL HEADER END 20 */ 21 22 /* 23 * Copyright 2007 Sun Microsystems, Inc. All rights reserved. 24 * Use is subject to license terms. 25 */ 26 27 #ifndef _LIBZFS_H 28 #define _LIBZFS_H 29 30 #pragma ident "%Z%%M% %I% %E% SMI" 31 32 #include <assert.h> 33 #include <libnvpair.h> 34 #include <sys/param.h> 35 #include <sys/types.h> 36 #include <sys/varargs.h> 37 #include <sys/fs/zfs.h> 38 #include <sys/avl.h> 39 #include <ucred.h> 40 41 #ifdef __cplusplus 42 extern "C" { 43 #endif 44 45 /* 46 * Miscellaneous ZFS constants 47 */ 48 #define ZFS_MAXNAMELEN MAXNAMELEN 49 #define ZPOOL_MAXNAMELEN MAXNAMELEN 50 #define ZFS_MAXPROPLEN MAXPATHLEN 51 #define ZPOOL_MAXPROPLEN MAXPATHLEN 52 53 /* 54 * libzfs errors 55 */ 56 enum { 57 EZFS_NOMEM = 2000, /* out of memory */ 58 EZFS_BADPROP, /* invalid property value */ 59 EZFS_PROPREADONLY, /* cannot set readonly property */ 60 EZFS_PROPTYPE, /* property does not apply to dataset type */ 61 EZFS_PROPNONINHERIT, /* property is not inheritable */ 62 EZFS_PROPSPACE, /* bad quota or reservation */ 63 EZFS_BADTYPE, /* dataset is not of appropriate type */ 64 EZFS_BUSY, /* pool or dataset is busy */ 65 EZFS_EXISTS, /* pool or dataset already exists */ 66 EZFS_NOENT, /* no such pool or dataset */ 67 EZFS_BADSTREAM, /* bad backup stream */ 68 EZFS_DSREADONLY, /* dataset is readonly */ 69 EZFS_VOLTOOBIG, /* volume is too large for 32-bit system */ 70 EZFS_VOLHASDATA, /* volume already contains data */ 71 EZFS_INVALIDNAME, /* invalid dataset name */ 72 EZFS_BADRESTORE, /* unable to restore to destination */ 73 EZFS_BADBACKUP, /* backup failed */ 74 EZFS_BADTARGET, /* bad attach/detach/replace target */ 75 EZFS_NODEVICE, /* no such device in pool */ 76 EZFS_BADDEV, /* invalid device to add */ 77 EZFS_NOREPLICAS, /* no valid replicas */ 78 EZFS_RESILVERING, /* currently resilvering */ 79 EZFS_BADVERSION, /* unsupported version */ 80 EZFS_POOLUNAVAIL, /* pool is currently unavailable */ 81 EZFS_DEVOVERFLOW, /* too many devices in one vdev */ 82 EZFS_BADPATH, /* must be an absolute path */ 83 EZFS_CROSSTARGET, /* rename or clone across pool or dataset */ 84 EZFS_ZONED, /* used improperly in local zone */ 85 EZFS_MOUNTFAILED, /* failed to mount dataset */ 86 EZFS_UMOUNTFAILED, /* failed to unmount dataset */ 87 EZFS_UNSHARENFSFAILED, /* unshare(1M) failed */ 88 EZFS_SHARENFSFAILED, /* share(1M) failed */ 89 EZFS_DEVLINKS, /* failed to create zvol links */ 90 EZFS_PERM, /* permission denied */ 91 EZFS_NOSPC, /* out of space */ 92 EZFS_IO, /* I/O error */ 93 EZFS_INTR, /* signal received */ 94 EZFS_ISSPARE, /* device is a hot spare */ 95 EZFS_INVALCONFIG, /* invalid vdev configuration */ 96 EZFS_RECURSIVE, /* recursive dependency */ 97 EZFS_NOHISTORY, /* no history object */ 98 EZFS_UNSHAREISCSIFAILED, /* iscsitgtd failed request to unshare */ 99 EZFS_SHAREISCSIFAILED, /* iscsitgtd failed request to share */ 100 EZFS_POOLPROPS, /* couldn't retrieve pool props */ 101 EZFS_POOL_NOTSUP, /* ops not supported for this type of pool */ 102 EZFS_POOL_INVALARG, /* invalid argument for this pool operation */ 103 EZFS_NAMETOOLONG, /* dataset name is too long */ 104 EZFS_OPENFAILED, /* open of device failed */ 105 EZFS_NOCAP, /* couldn't get capacity */ 106 EZFS_LABELFAILED, /* write of label failed */ 107 EZFS_ISCSISVCUNAVAIL, /* iscsi service unavailable */ 108 EZFS_BADWHO, /* invalid permission who */ 109 EZFS_BADPERM, /* invalid permission */ 110 EZFS_BADPERMSET, /* invalid permission set name */ 111 EZFS_NODELEGATION, /* delegated administration is disabled */ 112 EZFS_PERMRDONLY, /* pemissions are readonly */ 113 EZFS_UNSHARESMBFAILED, /* failed to unshare over smb */ 114 EZFS_SHARESMBFAILED, /* failed to share over smb */ 115 EZFS_BADCACHE, /* bad cache file */ 116 EZFS_UNKNOWN 117 }; 118 119 /* 120 * The following data structures are all part 121 * of the zfs_allow_t data structure which is 122 * used for printing 'allow' permissions. 123 * It is a linked list of zfs_allow_t's which 124 * then contain avl tree's for user/group/sets/... 125 * and each one of the entries in those trees have 126 * avl tree's for the permissions they belong to and 127 * whether they are local,descendent or local+descendent 128 * permissions. The AVL trees are used primarily for 129 * sorting purposes, but also so that we can quickly find 130 * a given user and or permission. 131 */ 132 typedef struct zfs_perm_node { 133 avl_node_t z_node; 134 char z_pname[MAXPATHLEN]; 135 } zfs_perm_node_t; 136 137 typedef struct zfs_allow_node { 138 avl_node_t z_node; 139 char z_key[MAXPATHLEN]; /* name, such as joe */ 140 avl_tree_t z_localdescend; /* local+descendent perms */ 141 avl_tree_t z_local; /* local permissions */ 142 avl_tree_t z_descend; /* descendent permissions */ 143 } zfs_allow_node_t; 144 145 typedef struct zfs_allow { 146 struct zfs_allow *z_next; 147 char z_setpoint[MAXPATHLEN]; 148 avl_tree_t z_sets; 149 avl_tree_t z_crperms; 150 avl_tree_t z_user; 151 avl_tree_t z_group; 152 avl_tree_t z_everyone; 153 } zfs_allow_t; 154 155 /* 156 * Basic handle types 157 */ 158 typedef struct zfs_handle zfs_handle_t; 159 typedef struct zpool_handle zpool_handle_t; 160 typedef struct libzfs_handle libzfs_handle_t; 161 162 /* 163 * Library initialization 164 */ 165 extern libzfs_handle_t *libzfs_init(void); 166 extern void libzfs_fini(libzfs_handle_t *); 167 168 extern libzfs_handle_t *zpool_get_handle(zpool_handle_t *); 169 extern libzfs_handle_t *zfs_get_handle(zfs_handle_t *); 170 171 extern void libzfs_print_on_error(libzfs_handle_t *, boolean_t); 172 173 extern int libzfs_errno(libzfs_handle_t *); 174 extern const char *libzfs_error_action(libzfs_handle_t *); 175 extern const char *libzfs_error_description(libzfs_handle_t *); 176 177 /* 178 * Basic handle functions 179 */ 180 extern zpool_handle_t *zpool_open(libzfs_handle_t *, const char *); 181 extern zpool_handle_t *zpool_open_canfail(libzfs_handle_t *, const char *); 182 extern void zpool_close(zpool_handle_t *); 183 extern const char *zpool_get_name(zpool_handle_t *); 184 extern int zpool_get_state(zpool_handle_t *); 185 extern char *zpool_state_to_name(vdev_state_t, vdev_aux_t); 186 187 /* 188 * Iterate over all active pools in the system. 189 */ 190 typedef int (*zpool_iter_f)(zpool_handle_t *, void *); 191 extern int zpool_iter(libzfs_handle_t *, zpool_iter_f, void *); 192 193 /* 194 * Functions to create and destroy pools 195 */ 196 extern int zpool_create(libzfs_handle_t *, const char *, nvlist_t *, 197 nvlist_t *); 198 extern int zpool_destroy(zpool_handle_t *); 199 extern int zpool_add(zpool_handle_t *, nvlist_t *); 200 201 /* 202 * Functions to manipulate pool and vdev state 203 */ 204 extern int zpool_scrub(zpool_handle_t *, pool_scrub_type_t); 205 extern int zpool_clear(zpool_handle_t *, const char *); 206 207 extern int zpool_vdev_online(zpool_handle_t *, const char *, int, 208 vdev_state_t *); 209 extern int zpool_vdev_offline(zpool_handle_t *, const char *, boolean_t); 210 extern int zpool_vdev_attach(zpool_handle_t *, const char *, 211 const char *, nvlist_t *, int); 212 extern int zpool_vdev_detach(zpool_handle_t *, const char *); 213 extern int zpool_vdev_remove(zpool_handle_t *, const char *); 214 215 extern int zpool_vdev_fault(zpool_handle_t *, uint64_t); 216 extern int zpool_vdev_degrade(zpool_handle_t *, uint64_t); 217 extern int zpool_vdev_clear(zpool_handle_t *, uint64_t); 218 219 extern nvlist_t *zpool_find_vdev(zpool_handle_t *, const char *, boolean_t *); 220 extern int zpool_label_disk(libzfs_handle_t *, zpool_handle_t *, char *); 221 222 /* 223 * Functions to manage pool properties 224 */ 225 extern int zpool_set_prop(zpool_handle_t *, const char *, const char *); 226 extern int zpool_get_prop(zpool_handle_t *, zpool_prop_t, char *, 227 size_t proplen, zprop_source_t *); 228 extern uint64_t zpool_get_prop_int(zpool_handle_t *, zpool_prop_t, 229 zprop_source_t *); 230 231 extern const char *zpool_prop_to_name(zpool_prop_t); 232 extern const char *zpool_prop_values(zpool_prop_t); 233 234 /* 235 * Pool health statistics. 236 */ 237 typedef enum { 238 /* 239 * The following correspond to faults as defined in the (fault.fs.zfs.*) 240 * event namespace. Each is associated with a corresponding message ID. 241 */ 242 ZPOOL_STATUS_CORRUPT_CACHE, /* corrupt /kernel/drv/zpool.cache */ 243 ZPOOL_STATUS_MISSING_DEV_R, /* missing device with replicas */ 244 ZPOOL_STATUS_MISSING_DEV_NR, /* missing device with no replicas */ 245 ZPOOL_STATUS_CORRUPT_LABEL_R, /* bad device label with replicas */ 246 ZPOOL_STATUS_CORRUPT_LABEL_NR, /* bad device label with no replicas */ 247 ZPOOL_STATUS_BAD_GUID_SUM, /* sum of device guids didn't match */ 248 ZPOOL_STATUS_CORRUPT_POOL, /* pool metadata is corrupted */ 249 ZPOOL_STATUS_CORRUPT_DATA, /* data errors in user (meta)data */ 250 ZPOOL_STATUS_FAILING_DEV, /* device experiencing errors */ 251 ZPOOL_STATUS_VERSION_NEWER, /* newer on-disk version */ 252 ZPOOL_STATUS_HOSTID_MISMATCH, /* last accessed by another system */ 253 ZPOOL_STATUS_FAULTED_DEV_R, /* faulted device with replicas */ 254 ZPOOL_STATUS_FAULTED_DEV_NR, /* faulted device with no replicas */ 255 256 /* 257 * The following are not faults per se, but still an error possibly 258 * requiring administrative attention. There is no corresponding 259 * message ID. 260 */ 261 ZPOOL_STATUS_VERSION_OLDER, /* older on-disk version */ 262 ZPOOL_STATUS_RESILVERING, /* device being resilvered */ 263 ZPOOL_STATUS_OFFLINE_DEV, /* device online */ 264 265 /* 266 * Finally, the following indicates a healthy pool. 267 */ 268 ZPOOL_STATUS_OK 269 } zpool_status_t; 270 271 extern zpool_status_t zpool_get_status(zpool_handle_t *, char **); 272 extern zpool_status_t zpool_import_status(nvlist_t *, char **); 273 274 /* 275 * Statistics and configuration functions. 276 */ 277 extern nvlist_t *zpool_get_config(zpool_handle_t *, nvlist_t **); 278 extern int zpool_refresh_stats(zpool_handle_t *, boolean_t *); 279 extern int zpool_get_errlog(zpool_handle_t *, nvlist_t **); 280 281 /* 282 * Import and export functions 283 */ 284 extern int zpool_export(zpool_handle_t *); 285 extern int zpool_import(libzfs_handle_t *, nvlist_t *, const char *, 286 char *altroot); 287 extern int zpool_import_props(libzfs_handle_t *, nvlist_t *, const char *, 288 nvlist_t *); 289 290 /* 291 * Search for pools to import 292 */ 293 extern nvlist_t *zpool_find_import(libzfs_handle_t *, int, char **); 294 extern nvlist_t *zpool_find_import_cached(libzfs_handle_t *, const char *); 295 296 /* 297 * Miscellaneous pool functions 298 */ 299 struct zfs_cmd; 300 301 extern char *zpool_vdev_name(libzfs_handle_t *, zpool_handle_t *, nvlist_t *); 302 extern int zpool_upgrade(zpool_handle_t *, uint64_t); 303 extern int zpool_get_history(zpool_handle_t *, nvlist_t **); 304 extern void zpool_set_history_str(const char *subcommand, int argc, 305 char **argv, char *history_str); 306 extern int zpool_stage_history(libzfs_handle_t *, const char *); 307 extern void zpool_obj_to_path(zpool_handle_t *, uint64_t, uint64_t, char *, 308 size_t len); 309 extern int zfs_ioctl(libzfs_handle_t *, int, struct zfs_cmd *); 310 /* 311 * Basic handle manipulations. These functions do not create or destroy the 312 * underlying datasets, only the references to them. 313 */ 314 extern zfs_handle_t *zfs_open(libzfs_handle_t *, const char *, int); 315 extern void zfs_close(zfs_handle_t *); 316 extern zfs_type_t zfs_get_type(const zfs_handle_t *); 317 extern const char *zfs_get_name(const zfs_handle_t *); 318 319 /* 320 * Property management functions. Some functions are shared with the kernel, 321 * and are found in sys/fs/zfs.h. 322 */ 323 324 /* 325 * zfs dataset property management 326 */ 327 extern const char *zfs_prop_default_string(zfs_prop_t); 328 extern uint64_t zfs_prop_default_numeric(zfs_prop_t); 329 extern const char *zfs_prop_column_name(zfs_prop_t); 330 extern boolean_t zfs_prop_align_right(zfs_prop_t); 331 332 extern const char *zfs_prop_to_name(zfs_prop_t); 333 extern int zfs_prop_set(zfs_handle_t *, const char *, const char *); 334 extern int zfs_prop_get(zfs_handle_t *, zfs_prop_t, char *, size_t, 335 zprop_source_t *, char *, size_t, boolean_t); 336 extern int zfs_prop_get_numeric(zfs_handle_t *, zfs_prop_t, uint64_t *, 337 zprop_source_t *, char *, size_t); 338 extern uint64_t zfs_prop_get_int(zfs_handle_t *, zfs_prop_t); 339 extern int zfs_prop_inherit(zfs_handle_t *, const char *); 340 extern const char *zfs_prop_values(zfs_prop_t); 341 extern int zfs_prop_is_string(zfs_prop_t prop); 342 extern nvlist_t *zfs_get_user_props(zfs_handle_t *); 343 344 typedef struct zprop_list { 345 int pl_prop; 346 char *pl_user_prop; 347 struct zprop_list *pl_next; 348 boolean_t pl_all; 349 size_t pl_width; 350 boolean_t pl_fixed; 351 } zprop_list_t; 352 353 extern int zfs_expand_proplist(zfs_handle_t *, zprop_list_t **); 354 355 #define ZFS_MOUNTPOINT_NONE "none" 356 #define ZFS_MOUNTPOINT_LEGACY "legacy" 357 358 /* 359 * zpool property management 360 */ 361 extern int zpool_expand_proplist(zpool_handle_t *, zprop_list_t **); 362 extern const char *zpool_prop_default_string(zpool_prop_t); 363 extern uint64_t zpool_prop_default_numeric(zpool_prop_t); 364 extern const char *zpool_prop_column_name(zpool_prop_t); 365 extern boolean_t zpool_prop_align_right(zpool_prop_t); 366 367 /* 368 * Functions shared by zfs and zpool property management. 369 */ 370 extern int zprop_iter(zprop_func func, void *cb, boolean_t show_all, 371 boolean_t ordered, zfs_type_t type); 372 extern int zprop_get_list(libzfs_handle_t *, char *, zprop_list_t **, 373 zfs_type_t); 374 extern void zprop_free_list(zprop_list_t *); 375 376 /* 377 * Functions for printing zfs or zpool properties 378 */ 379 typedef struct zprop_get_cbdata { 380 int cb_sources; 381 int cb_columns[4]; 382 int cb_colwidths[5]; 383 boolean_t cb_scripted; 384 boolean_t cb_literal; 385 boolean_t cb_first; 386 zprop_list_t *cb_proplist; 387 zfs_type_t cb_type; 388 } zprop_get_cbdata_t; 389 390 void zprop_print_one_property(const char *, zprop_get_cbdata_t *, 391 const char *, const char *, zprop_source_t, const char *); 392 393 #define GET_COL_NAME 1 394 #define GET_COL_PROPERTY 2 395 #define GET_COL_VALUE 3 396 #define GET_COL_SOURCE 4 397 398 /* 399 * Iterator functions. 400 */ 401 typedef int (*zfs_iter_f)(zfs_handle_t *, void *); 402 extern int zfs_iter_root(libzfs_handle_t *, zfs_iter_f, void *); 403 extern int zfs_iter_children(zfs_handle_t *, zfs_iter_f, void *); 404 extern int zfs_iter_dependents(zfs_handle_t *, boolean_t, zfs_iter_f, void *); 405 extern int zfs_iter_filesystems(zfs_handle_t *, zfs_iter_f, void *); 406 extern int zfs_iter_snapshots(zfs_handle_t *, zfs_iter_f, void *); 407 408 /* 409 * Functions to create and destroy datasets. 410 */ 411 extern int zfs_create(libzfs_handle_t *, const char *, zfs_type_t, 412 nvlist_t *); 413 extern int zfs_create_ancestors(libzfs_handle_t *, const char *); 414 extern int zfs_destroy(zfs_handle_t *); 415 extern int zfs_destroy_snaps(zfs_handle_t *, char *); 416 extern int zfs_clone(zfs_handle_t *, const char *, nvlist_t *); 417 extern int zfs_snapshot(libzfs_handle_t *, const char *, boolean_t); 418 extern int zfs_rollback(zfs_handle_t *, zfs_handle_t *, int); 419 extern int zfs_rename(zfs_handle_t *, const char *, boolean_t); 420 extern int zfs_send(zfs_handle_t *, const char *, const char *, 421 boolean_t, boolean_t, boolean_t, boolean_t, int); 422 extern int zfs_promote(zfs_handle_t *); 423 424 typedef struct recvflags { 425 boolean_t verbose : 1; 426 boolean_t isprefix : 1; 427 boolean_t dryrun : 1; 428 boolean_t force : 1; 429 boolean_t canmountoff : 1; 430 boolean_t byteswap : 1; 431 } recvflags_t; 432 433 extern int zfs_receive(libzfs_handle_t *, const char *, recvflags_t, 434 int, avl_tree_t *); 435 436 /* 437 * Miscellaneous functions. 438 */ 439 extern const char *zfs_type_to_name(zfs_type_t); 440 extern void zfs_refresh_properties(zfs_handle_t *); 441 extern int zfs_name_valid(const char *, zfs_type_t); 442 extern zfs_handle_t *zfs_path_to_zhandle(libzfs_handle_t *, char *, zfs_type_t); 443 extern boolean_t zfs_dataset_exists(libzfs_handle_t *, const char *, 444 zfs_type_t); 445 446 /* 447 * dataset permission functions. 448 */ 449 extern int zfs_perm_set(zfs_handle_t *, nvlist_t *); 450 extern int zfs_perm_remove(zfs_handle_t *, nvlist_t *); 451 extern int zfs_build_perms(zfs_handle_t *, char *, char *, 452 zfs_deleg_who_type_t, zfs_deleg_inherit_t, nvlist_t **nvlist_t); 453 extern int zfs_perm_get(zfs_handle_t *, zfs_allow_t **); 454 extern void zfs_free_allows(zfs_allow_t *); 455 456 /* 457 * Mount support functions. 458 */ 459 extern boolean_t is_mounted(libzfs_handle_t *, const char *special, char **); 460 extern boolean_t zfs_is_mounted(zfs_handle_t *, char **); 461 extern int zfs_mount(zfs_handle_t *, const char *, int); 462 extern int zfs_unmount(zfs_handle_t *, const char *, int); 463 extern int zfs_unmountall(zfs_handle_t *, int); 464 465 /* 466 * Share support functions. 467 */ 468 extern boolean_t zfs_is_shared(zfs_handle_t *); 469 extern int zfs_share(zfs_handle_t *); 470 extern int zfs_unshare(zfs_handle_t *); 471 472 /* 473 * Protocol-specific share support functions. 474 */ 475 extern boolean_t zfs_is_shared_nfs(zfs_handle_t *, char **); 476 extern boolean_t zfs_is_shared_smb(zfs_handle_t *, char **); 477 extern int zfs_share_nfs(zfs_handle_t *); 478 extern int zfs_share_smb(zfs_handle_t *); 479 extern int zfs_shareall(zfs_handle_t *); 480 extern int zfs_unshare_nfs(zfs_handle_t *, const char *); 481 extern int zfs_unshare_smb(zfs_handle_t *, const char *); 482 extern int zfs_unshareall_nfs(zfs_handle_t *); 483 extern int zfs_unshareall_smb(zfs_handle_t *); 484 extern int zfs_unshareall_bypath(zfs_handle_t *, const char *); 485 extern int zfs_unshareall(zfs_handle_t *); 486 extern boolean_t zfs_is_shared_iscsi(zfs_handle_t *); 487 extern int zfs_share_iscsi(zfs_handle_t *); 488 extern int zfs_unshare_iscsi(zfs_handle_t *); 489 extern int zfs_iscsi_perm_check(libzfs_handle_t *, char *, ucred_t *); 490 extern int zfs_deleg_share_nfs(libzfs_handle_t *, char *, char *, 491 void *, void *, int, zfs_share_op_t); 492 493 /* 494 * When dealing with nvlists, verify() is extremely useful 495 */ 496 #ifdef NDEBUG 497 #define verify(EX) ((void)(EX)) 498 #else 499 #define verify(EX) assert(EX) 500 #endif 501 502 /* 503 * Utility function to convert a number to a human-readable form. 504 */ 505 extern void zfs_nicenum(uint64_t, char *, size_t); 506 extern int zfs_nicestrtonum(libzfs_handle_t *, const char *, uint64_t *); 507 508 /* 509 * Given a device or file, determine if it is part of a pool. 510 */ 511 extern int zpool_in_use(libzfs_handle_t *, int, pool_state_t *, char **, 512 boolean_t *); 513 514 /* 515 * ftyp special. Read the label from a given device. 516 */ 517 extern int zpool_read_label(int, nvlist_t **); 518 519 /* 520 * Create and remove zvol /dev links. 521 */ 522 extern int zpool_create_zvol_links(zpool_handle_t *); 523 extern int zpool_remove_zvol_links(zpool_handle_t *); 524 525 /* 526 * Enable and disable datasets within a pool by mounting/unmounting and 527 * sharing/unsharing them. 528 */ 529 extern int zpool_enable_datasets(zpool_handle_t *, const char *, int); 530 extern int zpool_disable_datasets(zpool_handle_t *, boolean_t); 531 532 #ifdef __cplusplus 533 } 534 #endif 535 536 #endif /* _LIBZFS_H */ 537