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 2008 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_ISL2CACHE, /* device is for the level 2 ARC */ 117 EZFS_VDEVNOTSUP, /* unsupported vdev type */ 118 EZFS_UNKNOWN 119 }; 120 121 /* 122 * The following data structures are all part 123 * of the zfs_allow_t data structure which is 124 * used for printing 'allow' permissions. 125 * It is a linked list of zfs_allow_t's which 126 * then contain avl tree's for user/group/sets/... 127 * and each one of the entries in those trees have 128 * avl tree's for the permissions they belong to and 129 * whether they are local,descendent or local+descendent 130 * permissions. The AVL trees are used primarily for 131 * sorting purposes, but also so that we can quickly find 132 * a given user and or permission. 133 */ 134 typedef struct zfs_perm_node { 135 avl_node_t z_node; 136 char z_pname[MAXPATHLEN]; 137 } zfs_perm_node_t; 138 139 typedef struct zfs_allow_node { 140 avl_node_t z_node; 141 char z_key[MAXPATHLEN]; /* name, such as joe */ 142 avl_tree_t z_localdescend; /* local+descendent perms */ 143 avl_tree_t z_local; /* local permissions */ 144 avl_tree_t z_descend; /* descendent permissions */ 145 } zfs_allow_node_t; 146 147 typedef struct zfs_allow { 148 struct zfs_allow *z_next; 149 char z_setpoint[MAXPATHLEN]; 150 avl_tree_t z_sets; 151 avl_tree_t z_crperms; 152 avl_tree_t z_user; 153 avl_tree_t z_group; 154 avl_tree_t z_everyone; 155 } zfs_allow_t; 156 157 /* 158 * Basic handle types 159 */ 160 typedef struct zfs_handle zfs_handle_t; 161 typedef struct zpool_handle zpool_handle_t; 162 typedef struct libzfs_handle libzfs_handle_t; 163 164 /* 165 * Library initialization 166 */ 167 extern libzfs_handle_t *libzfs_init(void); 168 extern void libzfs_fini(libzfs_handle_t *); 169 170 extern libzfs_handle_t *zpool_get_handle(zpool_handle_t *); 171 extern libzfs_handle_t *zfs_get_handle(zfs_handle_t *); 172 173 extern void libzfs_print_on_error(libzfs_handle_t *, boolean_t); 174 175 extern int libzfs_errno(libzfs_handle_t *); 176 extern const char *libzfs_error_action(libzfs_handle_t *); 177 extern const char *libzfs_error_description(libzfs_handle_t *); 178 179 /* 180 * Basic handle functions 181 */ 182 extern zpool_handle_t *zpool_open(libzfs_handle_t *, const char *); 183 extern zpool_handle_t *zpool_open_canfail(libzfs_handle_t *, const char *); 184 extern void zpool_close(zpool_handle_t *); 185 extern const char *zpool_get_name(zpool_handle_t *); 186 extern int zpool_get_state(zpool_handle_t *); 187 extern char *zpool_state_to_name(vdev_state_t, vdev_aux_t); 188 189 /* 190 * Iterate over all active pools in the system. 191 */ 192 typedef int (*zpool_iter_f)(zpool_handle_t *, void *); 193 extern int zpool_iter(libzfs_handle_t *, zpool_iter_f, void *); 194 195 /* 196 * Functions to create and destroy pools 197 */ 198 extern int zpool_create(libzfs_handle_t *, const char *, nvlist_t *, 199 nvlist_t *); 200 extern int zpool_destroy(zpool_handle_t *); 201 extern int zpool_add(zpool_handle_t *, nvlist_t *); 202 203 /* 204 * Functions to manipulate pool and vdev state 205 */ 206 extern int zpool_scrub(zpool_handle_t *, pool_scrub_type_t); 207 extern int zpool_clear(zpool_handle_t *, const char *); 208 209 extern int zpool_vdev_online(zpool_handle_t *, const char *, int, 210 vdev_state_t *); 211 extern int zpool_vdev_offline(zpool_handle_t *, const char *, boolean_t); 212 extern int zpool_vdev_attach(zpool_handle_t *, const char *, 213 const char *, nvlist_t *, int); 214 extern int zpool_vdev_detach(zpool_handle_t *, const char *); 215 extern int zpool_vdev_remove(zpool_handle_t *, const char *); 216 217 extern int zpool_vdev_fault(zpool_handle_t *, uint64_t); 218 extern int zpool_vdev_degrade(zpool_handle_t *, uint64_t); 219 extern int zpool_vdev_clear(zpool_handle_t *, uint64_t); 220 221 extern nvlist_t *zpool_find_vdev(zpool_handle_t *, const char *, boolean_t *, 222 boolean_t *); 223 extern int zpool_label_disk(libzfs_handle_t *, zpool_handle_t *, char *); 224 225 /* 226 * Functions to manage pool properties 227 */ 228 extern int zpool_set_prop(zpool_handle_t *, const char *, const char *); 229 extern int zpool_get_prop(zpool_handle_t *, zpool_prop_t, char *, 230 size_t proplen, zprop_source_t *); 231 extern uint64_t zpool_get_prop_int(zpool_handle_t *, zpool_prop_t, 232 zprop_source_t *); 233 234 extern const char *zpool_prop_to_name(zpool_prop_t); 235 extern const char *zpool_prop_values(zpool_prop_t); 236 237 /* 238 * Pool health statistics. 239 */ 240 typedef enum { 241 /* 242 * The following correspond to faults as defined in the (fault.fs.zfs.*) 243 * event namespace. Each is associated with a corresponding message ID. 244 */ 245 ZPOOL_STATUS_CORRUPT_CACHE, /* corrupt /kernel/drv/zpool.cache */ 246 ZPOOL_STATUS_MISSING_DEV_R, /* missing device with replicas */ 247 ZPOOL_STATUS_MISSING_DEV_NR, /* missing device with no replicas */ 248 ZPOOL_STATUS_CORRUPT_LABEL_R, /* bad device label with replicas */ 249 ZPOOL_STATUS_CORRUPT_LABEL_NR, /* bad device label with no replicas */ 250 ZPOOL_STATUS_BAD_GUID_SUM, /* sum of device guids didn't match */ 251 ZPOOL_STATUS_CORRUPT_POOL, /* pool metadata is corrupted */ 252 ZPOOL_STATUS_CORRUPT_DATA, /* data errors in user (meta)data */ 253 ZPOOL_STATUS_FAILING_DEV, /* device experiencing errors */ 254 ZPOOL_STATUS_VERSION_NEWER, /* newer on-disk version */ 255 ZPOOL_STATUS_HOSTID_MISMATCH, /* last accessed by another system */ 256 ZPOOL_STATUS_FAULTED_DEV_R, /* faulted device with replicas */ 257 ZPOOL_STATUS_FAULTED_DEV_NR, /* faulted device with no replicas */ 258 259 /* 260 * The following are not faults per se, but still an error possibly 261 * requiring administrative attention. There is no corresponding 262 * message ID. 263 */ 264 ZPOOL_STATUS_VERSION_OLDER, /* older on-disk version */ 265 ZPOOL_STATUS_RESILVERING, /* device being resilvered */ 266 ZPOOL_STATUS_OFFLINE_DEV, /* device online */ 267 268 /* 269 * Finally, the following indicates a healthy pool. 270 */ 271 ZPOOL_STATUS_OK 272 } zpool_status_t; 273 274 extern zpool_status_t zpool_get_status(zpool_handle_t *, char **); 275 extern zpool_status_t zpool_import_status(nvlist_t *, char **); 276 277 /* 278 * Statistics and configuration functions. 279 */ 280 extern nvlist_t *zpool_get_config(zpool_handle_t *, nvlist_t **); 281 extern int zpool_refresh_stats(zpool_handle_t *, boolean_t *); 282 extern int zpool_get_errlog(zpool_handle_t *, nvlist_t **); 283 284 /* 285 * Import and export functions 286 */ 287 extern int zpool_export(zpool_handle_t *); 288 extern int zpool_import(libzfs_handle_t *, nvlist_t *, const char *, 289 char *altroot); 290 extern int zpool_import_props(libzfs_handle_t *, nvlist_t *, const char *, 291 nvlist_t *); 292 293 /* 294 * Search for pools to import 295 */ 296 extern nvlist_t *zpool_find_import(libzfs_handle_t *, int, char **, boolean_t); 297 extern nvlist_t *zpool_find_import_cached(libzfs_handle_t *, const char *, 298 boolean_t); 299 300 /* 301 * Miscellaneous pool functions 302 */ 303 struct zfs_cmd; 304 305 extern char *zpool_vdev_name(libzfs_handle_t *, zpool_handle_t *, nvlist_t *); 306 extern int zpool_upgrade(zpool_handle_t *, uint64_t); 307 extern int zpool_get_history(zpool_handle_t *, nvlist_t **); 308 extern void zpool_set_history_str(const char *subcommand, int argc, 309 char **argv, char *history_str); 310 extern int zpool_stage_history(libzfs_handle_t *, const char *); 311 extern void zpool_obj_to_path(zpool_handle_t *, uint64_t, uint64_t, char *, 312 size_t len); 313 extern int zfs_ioctl(libzfs_handle_t *, int, struct zfs_cmd *); 314 /* 315 * Basic handle manipulations. These functions do not create or destroy the 316 * underlying datasets, only the references to them. 317 */ 318 extern zfs_handle_t *zfs_open(libzfs_handle_t *, const char *, int); 319 extern void zfs_close(zfs_handle_t *); 320 extern zfs_type_t zfs_get_type(const zfs_handle_t *); 321 extern const char *zfs_get_name(const zfs_handle_t *); 322 323 /* 324 * Property management functions. Some functions are shared with the kernel, 325 * and are found in sys/fs/zfs.h. 326 */ 327 328 /* 329 * zfs dataset property management 330 */ 331 extern const char *zfs_prop_default_string(zfs_prop_t); 332 extern uint64_t zfs_prop_default_numeric(zfs_prop_t); 333 extern const char *zfs_prop_column_name(zfs_prop_t); 334 extern boolean_t zfs_prop_align_right(zfs_prop_t); 335 336 extern const char *zfs_prop_to_name(zfs_prop_t); 337 extern int zfs_prop_set(zfs_handle_t *, const char *, const char *); 338 extern int zfs_prop_get(zfs_handle_t *, zfs_prop_t, char *, size_t, 339 zprop_source_t *, char *, size_t, boolean_t); 340 extern int zfs_prop_get_numeric(zfs_handle_t *, zfs_prop_t, uint64_t *, 341 zprop_source_t *, char *, size_t); 342 extern uint64_t zfs_prop_get_int(zfs_handle_t *, zfs_prop_t); 343 extern int zfs_prop_inherit(zfs_handle_t *, const char *); 344 extern const char *zfs_prop_values(zfs_prop_t); 345 extern int zfs_prop_is_string(zfs_prop_t prop); 346 extern nvlist_t *zfs_get_user_props(zfs_handle_t *); 347 348 typedef struct zprop_list { 349 int pl_prop; 350 char *pl_user_prop; 351 struct zprop_list *pl_next; 352 boolean_t pl_all; 353 size_t pl_width; 354 boolean_t pl_fixed; 355 } zprop_list_t; 356 357 extern int zfs_expand_proplist(zfs_handle_t *, zprop_list_t **); 358 359 #define ZFS_MOUNTPOINT_NONE "none" 360 #define ZFS_MOUNTPOINT_LEGACY "legacy" 361 362 /* 363 * zpool property management 364 */ 365 extern int zpool_expand_proplist(zpool_handle_t *, zprop_list_t **); 366 extern const char *zpool_prop_default_string(zpool_prop_t); 367 extern uint64_t zpool_prop_default_numeric(zpool_prop_t); 368 extern const char *zpool_prop_column_name(zpool_prop_t); 369 extern boolean_t zpool_prop_align_right(zpool_prop_t); 370 371 /* 372 * Functions shared by zfs and zpool property management. 373 */ 374 extern int zprop_iter(zprop_func func, void *cb, boolean_t show_all, 375 boolean_t ordered, zfs_type_t type); 376 extern int zprop_get_list(libzfs_handle_t *, char *, zprop_list_t **, 377 zfs_type_t); 378 extern void zprop_free_list(zprop_list_t *); 379 380 /* 381 * Functions for printing zfs or zpool properties 382 */ 383 typedef struct zprop_get_cbdata { 384 int cb_sources; 385 int cb_columns[4]; 386 int cb_colwidths[5]; 387 boolean_t cb_scripted; 388 boolean_t cb_literal; 389 boolean_t cb_first; 390 zprop_list_t *cb_proplist; 391 zfs_type_t cb_type; 392 } zprop_get_cbdata_t; 393 394 void zprop_print_one_property(const char *, zprop_get_cbdata_t *, 395 const char *, const char *, zprop_source_t, const char *); 396 397 #define GET_COL_NAME 1 398 #define GET_COL_PROPERTY 2 399 #define GET_COL_VALUE 3 400 #define GET_COL_SOURCE 4 401 402 /* 403 * Iterator functions. 404 */ 405 typedef int (*zfs_iter_f)(zfs_handle_t *, void *); 406 extern int zfs_iter_root(libzfs_handle_t *, zfs_iter_f, void *); 407 extern int zfs_iter_children(zfs_handle_t *, zfs_iter_f, void *); 408 extern int zfs_iter_dependents(zfs_handle_t *, boolean_t, zfs_iter_f, void *); 409 extern int zfs_iter_filesystems(zfs_handle_t *, zfs_iter_f, void *); 410 extern int zfs_iter_snapshots(zfs_handle_t *, zfs_iter_f, void *); 411 412 /* 413 * Functions to create and destroy datasets. 414 */ 415 extern int zfs_create(libzfs_handle_t *, const char *, zfs_type_t, 416 nvlist_t *); 417 extern int zfs_create_ancestors(libzfs_handle_t *, const char *); 418 extern int zfs_destroy(zfs_handle_t *); 419 extern int zfs_destroy_snaps(zfs_handle_t *, char *); 420 extern int zfs_clone(zfs_handle_t *, const char *, nvlist_t *); 421 extern int zfs_snapshot(libzfs_handle_t *, const char *, boolean_t); 422 extern int zfs_rollback(zfs_handle_t *, zfs_handle_t *, boolean_t); 423 extern int zfs_rename(zfs_handle_t *, const char *, boolean_t); 424 extern int zfs_send(zfs_handle_t *, const char *, const char *, 425 boolean_t, boolean_t, boolean_t, boolean_t, int); 426 extern int zfs_promote(zfs_handle_t *); 427 428 typedef struct recvflags { 429 /* print informational messages (ie, -v was specified) */ 430 int verbose : 1; 431 432 /* the destination is a prefix, not the exact fs (ie, -d) */ 433 int isprefix : 1; 434 435 /* do not actually do the recv, just check if it would work (ie, -n) */ 436 int dryrun : 1; 437 438 /* rollback/destroy filesystems as necessary (eg, -F) */ 439 int force : 1; 440 441 /* set "canmount=off" on all modified filesystems */ 442 int canmountoff : 1; 443 444 /* byteswap flag is used internally; callers need not specify */ 445 int byteswap : 1; 446 } recvflags_t; 447 448 extern int zfs_receive(libzfs_handle_t *, const char *, recvflags_t, 449 int, avl_tree_t *); 450 451 /* 452 * Miscellaneous functions. 453 */ 454 extern const char *zfs_type_to_name(zfs_type_t); 455 extern void zfs_refresh_properties(zfs_handle_t *); 456 extern int zfs_name_valid(const char *, zfs_type_t); 457 extern zfs_handle_t *zfs_path_to_zhandle(libzfs_handle_t *, char *, zfs_type_t); 458 extern boolean_t zfs_dataset_exists(libzfs_handle_t *, const char *, 459 zfs_type_t); 460 extern int zfs_spa_version(zfs_handle_t *, int *); 461 462 /* 463 * dataset permission functions. 464 */ 465 extern int zfs_perm_set(zfs_handle_t *, nvlist_t *); 466 extern int zfs_perm_remove(zfs_handle_t *, nvlist_t *); 467 extern int zfs_build_perms(zfs_handle_t *, char *, char *, 468 zfs_deleg_who_type_t, zfs_deleg_inherit_t, nvlist_t **nvlist_t); 469 extern int zfs_perm_get(zfs_handle_t *, zfs_allow_t **); 470 extern void zfs_free_allows(zfs_allow_t *); 471 extern void zfs_deleg_permissions(void); 472 473 /* 474 * Mount support functions. 475 */ 476 extern boolean_t is_mounted(libzfs_handle_t *, const char *special, char **); 477 extern boolean_t zfs_is_mounted(zfs_handle_t *, char **); 478 extern int zfs_mount(zfs_handle_t *, const char *, int); 479 extern int zfs_unmount(zfs_handle_t *, const char *, int); 480 extern int zfs_unmountall(zfs_handle_t *, int); 481 482 /* 483 * Share support functions. 484 */ 485 extern boolean_t zfs_is_shared(zfs_handle_t *); 486 extern int zfs_share(zfs_handle_t *); 487 extern int zfs_unshare(zfs_handle_t *); 488 489 /* 490 * Protocol-specific share support functions. 491 */ 492 extern boolean_t zfs_is_shared_nfs(zfs_handle_t *, char **); 493 extern boolean_t zfs_is_shared_smb(zfs_handle_t *, char **); 494 extern int zfs_share_nfs(zfs_handle_t *); 495 extern int zfs_share_smb(zfs_handle_t *); 496 extern int zfs_shareall(zfs_handle_t *); 497 extern int zfs_unshare_nfs(zfs_handle_t *, const char *); 498 extern int zfs_unshare_smb(zfs_handle_t *, const char *); 499 extern int zfs_unshareall_nfs(zfs_handle_t *); 500 extern int zfs_unshareall_smb(zfs_handle_t *); 501 extern int zfs_unshareall_bypath(zfs_handle_t *, const char *); 502 extern int zfs_unshareall(zfs_handle_t *); 503 extern boolean_t zfs_is_shared_iscsi(zfs_handle_t *); 504 extern int zfs_share_iscsi(zfs_handle_t *); 505 extern int zfs_unshare_iscsi(zfs_handle_t *); 506 extern int zfs_iscsi_perm_check(libzfs_handle_t *, char *, ucred_t *); 507 extern int zfs_deleg_share_nfs(libzfs_handle_t *, char *, char *, 508 void *, void *, int, zfs_share_op_t); 509 510 /* 511 * When dealing with nvlists, verify() is extremely useful 512 */ 513 #ifdef NDEBUG 514 #define verify(EX) ((void)(EX)) 515 #else 516 #define verify(EX) assert(EX) 517 #endif 518 519 /* 520 * Utility function to convert a number to a human-readable form. 521 */ 522 extern void zfs_nicenum(uint64_t, char *, size_t); 523 extern int zfs_nicestrtonum(libzfs_handle_t *, const char *, uint64_t *); 524 525 /* 526 * Given a device or file, determine if it is part of a pool. 527 */ 528 extern int zpool_in_use(libzfs_handle_t *, int, pool_state_t *, char **, 529 boolean_t *); 530 531 /* 532 * ftyp special. Read the label from a given device. 533 */ 534 extern int zpool_read_label(int, nvlist_t **); 535 536 /* 537 * Create and remove zvol /dev links. 538 */ 539 extern int zpool_create_zvol_links(zpool_handle_t *); 540 extern int zpool_remove_zvol_links(zpool_handle_t *); 541 542 /* is this zvol valid for use as a dump device? */ 543 extern int zvol_check_dump_config(char *); 544 545 /* 546 * Enable and disable datasets within a pool by mounting/unmounting and 547 * sharing/unsharing them. 548 */ 549 extern int zpool_enable_datasets(zpool_handle_t *, const char *, int); 550 extern int zpool_disable_datasets(zpool_handle_t *, boolean_t); 551 552 #ifdef __cplusplus 553 } 554 #endif 555 556 #endif /* _LIBZFS_H */ 557