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_NOTSUP, /* ops not supported on this dataset */ 119 EZFS_UNKNOWN 120 }; 121 122 /* 123 * The following data structures are all part 124 * of the zfs_allow_t data structure which is 125 * used for printing 'allow' permissions. 126 * It is a linked list of zfs_allow_t's which 127 * then contain avl tree's for user/group/sets/... 128 * and each one of the entries in those trees have 129 * avl tree's for the permissions they belong to and 130 * whether they are local,descendent or local+descendent 131 * permissions. The AVL trees are used primarily for 132 * sorting purposes, but also so that we can quickly find 133 * a given user and or permission. 134 */ 135 typedef struct zfs_perm_node { 136 avl_node_t z_node; 137 char z_pname[MAXPATHLEN]; 138 } zfs_perm_node_t; 139 140 typedef struct zfs_allow_node { 141 avl_node_t z_node; 142 char z_key[MAXPATHLEN]; /* name, such as joe */ 143 avl_tree_t z_localdescend; /* local+descendent perms */ 144 avl_tree_t z_local; /* local permissions */ 145 avl_tree_t z_descend; /* descendent permissions */ 146 } zfs_allow_node_t; 147 148 typedef struct zfs_allow { 149 struct zfs_allow *z_next; 150 char z_setpoint[MAXPATHLEN]; 151 avl_tree_t z_sets; 152 avl_tree_t z_crperms; 153 avl_tree_t z_user; 154 avl_tree_t z_group; 155 avl_tree_t z_everyone; 156 } zfs_allow_t; 157 158 /* 159 * Basic handle types 160 */ 161 typedef struct zfs_handle zfs_handle_t; 162 typedef struct zpool_handle zpool_handle_t; 163 typedef struct libzfs_handle libzfs_handle_t; 164 165 /* 166 * Library initialization 167 */ 168 extern libzfs_handle_t *libzfs_init(void); 169 extern void libzfs_fini(libzfs_handle_t *); 170 171 extern libzfs_handle_t *zpool_get_handle(zpool_handle_t *); 172 extern libzfs_handle_t *zfs_get_handle(zfs_handle_t *); 173 174 extern void libzfs_print_on_error(libzfs_handle_t *, boolean_t); 175 176 extern int libzfs_errno(libzfs_handle_t *); 177 extern const char *libzfs_error_action(libzfs_handle_t *); 178 extern const char *libzfs_error_description(libzfs_handle_t *); 179 180 /* 181 * Basic handle functions 182 */ 183 extern zpool_handle_t *zpool_open(libzfs_handle_t *, const char *); 184 extern zpool_handle_t *zpool_open_canfail(libzfs_handle_t *, const char *); 185 extern void zpool_close(zpool_handle_t *); 186 extern const char *zpool_get_name(zpool_handle_t *); 187 extern int zpool_get_state(zpool_handle_t *); 188 extern char *zpool_state_to_name(vdev_state_t, vdev_aux_t); 189 extern void zpool_free_handles(libzfs_handle_t *); 190 191 /* 192 * Iterate over all active pools in the system. 193 */ 194 typedef int (*zpool_iter_f)(zpool_handle_t *, void *); 195 extern int zpool_iter(libzfs_handle_t *, zpool_iter_f, void *); 196 197 /* 198 * Functions to create and destroy pools 199 */ 200 extern int zpool_create(libzfs_handle_t *, const char *, nvlist_t *, 201 nvlist_t *); 202 extern int zpool_destroy(zpool_handle_t *); 203 extern int zpool_add(zpool_handle_t *, nvlist_t *); 204 205 /* 206 * Functions to manipulate pool and vdev state 207 */ 208 extern int zpool_scrub(zpool_handle_t *, pool_scrub_type_t); 209 extern int zpool_clear(zpool_handle_t *, const char *); 210 211 extern int zpool_vdev_online(zpool_handle_t *, const char *, int, 212 vdev_state_t *); 213 extern int zpool_vdev_offline(zpool_handle_t *, const char *, boolean_t); 214 extern int zpool_vdev_attach(zpool_handle_t *, const char *, 215 const char *, nvlist_t *, int); 216 extern int zpool_vdev_detach(zpool_handle_t *, const char *); 217 extern int zpool_vdev_remove(zpool_handle_t *, const char *); 218 219 extern int zpool_vdev_fault(zpool_handle_t *, uint64_t); 220 extern int zpool_vdev_degrade(zpool_handle_t *, uint64_t); 221 extern int zpool_vdev_clear(zpool_handle_t *, uint64_t); 222 223 extern nvlist_t *zpool_find_vdev(zpool_handle_t *, const char *, boolean_t *, 224 boolean_t *); 225 extern int zpool_label_disk(libzfs_handle_t *, zpool_handle_t *, char *); 226 227 /* 228 * Functions to manage pool properties 229 */ 230 extern int zpool_set_prop(zpool_handle_t *, const char *, const char *); 231 extern int zpool_get_prop(zpool_handle_t *, zpool_prop_t, char *, 232 size_t proplen, zprop_source_t *); 233 extern uint64_t zpool_get_prop_int(zpool_handle_t *, zpool_prop_t, 234 zprop_source_t *); 235 236 extern const char *zpool_prop_to_name(zpool_prop_t); 237 extern const char *zpool_prop_values(zpool_prop_t); 238 239 /* 240 * Pool health statistics. 241 */ 242 typedef enum { 243 /* 244 * The following correspond to faults as defined in the (fault.fs.zfs.*) 245 * event namespace. Each is associated with a corresponding message ID. 246 */ 247 ZPOOL_STATUS_CORRUPT_CACHE, /* corrupt /kernel/drv/zpool.cache */ 248 ZPOOL_STATUS_MISSING_DEV_R, /* missing device with replicas */ 249 ZPOOL_STATUS_MISSING_DEV_NR, /* missing device with no replicas */ 250 ZPOOL_STATUS_CORRUPT_LABEL_R, /* bad device label with replicas */ 251 ZPOOL_STATUS_CORRUPT_LABEL_NR, /* bad device label with no replicas */ 252 ZPOOL_STATUS_BAD_GUID_SUM, /* sum of device guids didn't match */ 253 ZPOOL_STATUS_CORRUPT_POOL, /* pool metadata is corrupted */ 254 ZPOOL_STATUS_CORRUPT_DATA, /* data errors in user (meta)data */ 255 ZPOOL_STATUS_FAILING_DEV, /* device experiencing errors */ 256 ZPOOL_STATUS_VERSION_NEWER, /* newer on-disk version */ 257 ZPOOL_STATUS_HOSTID_MISMATCH, /* last accessed by another system */ 258 ZPOOL_STATUS_IO_FAILURE_WAIT, /* failed I/O, failmode 'wait' */ 259 ZPOOL_STATUS_IO_FAILURE_CONTINUE, /* failed I/O, failmode 'continue' */ 260 ZPOOL_STATUS_FAULTED_DEV_R, /* faulted device with replicas */ 261 ZPOOL_STATUS_FAULTED_DEV_NR, /* faulted device with no replicas */ 262 263 /* 264 * The following are not faults per se, but still an error possibly 265 * requiring administrative attention. There is no corresponding 266 * message ID. 267 */ 268 ZPOOL_STATUS_VERSION_OLDER, /* older on-disk version */ 269 ZPOOL_STATUS_RESILVERING, /* device being resilvered */ 270 ZPOOL_STATUS_OFFLINE_DEV, /* device online */ 271 272 /* 273 * Finally, the following indicates a healthy pool. 274 */ 275 ZPOOL_STATUS_OK 276 } zpool_status_t; 277 278 extern zpool_status_t zpool_get_status(zpool_handle_t *, char **); 279 extern zpool_status_t zpool_import_status(nvlist_t *, char **); 280 281 /* 282 * Statistics and configuration functions. 283 */ 284 extern nvlist_t *zpool_get_config(zpool_handle_t *, nvlist_t **); 285 extern int zpool_refresh_stats(zpool_handle_t *, boolean_t *); 286 extern int zpool_get_errlog(zpool_handle_t *, nvlist_t **); 287 288 /* 289 * Import and export functions 290 */ 291 extern int zpool_export(zpool_handle_t *); 292 extern int zpool_import(libzfs_handle_t *, nvlist_t *, const char *, 293 char *altroot); 294 extern int zpool_import_props(libzfs_handle_t *, nvlist_t *, const char *, 295 nvlist_t *, boolean_t); 296 297 /* 298 * Search for pools to import 299 */ 300 extern nvlist_t *zpool_find_import(libzfs_handle_t *, int, char **); 301 extern nvlist_t *zpool_find_import_cached(libzfs_handle_t *, const char *, 302 char *, uint64_t); 303 extern nvlist_t *zpool_find_import_byname(libzfs_handle_t *, int, char **, 304 char *); 305 extern nvlist_t *zpool_find_import_byguid(libzfs_handle_t *, int, char **, 306 uint64_t); 307 extern nvlist_t *zpool_find_import_activeok(libzfs_handle_t *, int, char **); 308 309 /* 310 * Miscellaneous pool functions 311 */ 312 struct zfs_cmd; 313 314 extern char *zpool_vdev_name(libzfs_handle_t *, zpool_handle_t *, nvlist_t *); 315 extern int zpool_upgrade(zpool_handle_t *, uint64_t); 316 extern int zpool_get_history(zpool_handle_t *, nvlist_t **); 317 extern void zpool_set_history_str(const char *subcommand, int argc, 318 char **argv, char *history_str); 319 extern int zpool_stage_history(libzfs_handle_t *, const char *); 320 extern void zpool_obj_to_path(zpool_handle_t *, uint64_t, uint64_t, char *, 321 size_t len); 322 extern int zfs_ioctl(libzfs_handle_t *, int, struct zfs_cmd *); 323 /* 324 * Basic handle manipulations. These functions do not create or destroy the 325 * underlying datasets, only the references to them. 326 */ 327 extern zfs_handle_t *zfs_open(libzfs_handle_t *, const char *, int); 328 extern void zfs_close(zfs_handle_t *); 329 extern zfs_type_t zfs_get_type(const zfs_handle_t *); 330 extern const char *zfs_get_name(const zfs_handle_t *); 331 332 /* 333 * Property management functions. Some functions are shared with the kernel, 334 * and are found in sys/fs/zfs.h. 335 */ 336 337 /* 338 * zfs dataset property management 339 */ 340 extern const char *zfs_prop_default_string(zfs_prop_t); 341 extern uint64_t zfs_prop_default_numeric(zfs_prop_t); 342 extern const char *zfs_prop_column_name(zfs_prop_t); 343 extern boolean_t zfs_prop_align_right(zfs_prop_t); 344 345 extern const char *zfs_prop_to_name(zfs_prop_t); 346 extern int zfs_prop_set(zfs_handle_t *, const char *, const char *); 347 extern int zfs_prop_get(zfs_handle_t *, zfs_prop_t, char *, size_t, 348 zprop_source_t *, char *, size_t, boolean_t); 349 extern int zfs_prop_get_numeric(zfs_handle_t *, zfs_prop_t, uint64_t *, 350 zprop_source_t *, char *, size_t); 351 extern uint64_t zfs_prop_get_int(zfs_handle_t *, zfs_prop_t); 352 extern int zfs_prop_inherit(zfs_handle_t *, const char *); 353 extern const char *zfs_prop_values(zfs_prop_t); 354 extern int zfs_prop_is_string(zfs_prop_t prop); 355 extern nvlist_t *zfs_get_user_props(zfs_handle_t *); 356 357 typedef struct zprop_list { 358 int pl_prop; 359 char *pl_user_prop; 360 struct zprop_list *pl_next; 361 boolean_t pl_all; 362 size_t pl_width; 363 boolean_t pl_fixed; 364 } zprop_list_t; 365 366 extern int zfs_expand_proplist(zfs_handle_t *, zprop_list_t **); 367 368 #define ZFS_MOUNTPOINT_NONE "none" 369 #define ZFS_MOUNTPOINT_LEGACY "legacy" 370 371 /* 372 * zpool property management 373 */ 374 extern int zpool_expand_proplist(zpool_handle_t *, zprop_list_t **); 375 extern const char *zpool_prop_default_string(zpool_prop_t); 376 extern uint64_t zpool_prop_default_numeric(zpool_prop_t); 377 extern const char *zpool_prop_column_name(zpool_prop_t); 378 extern boolean_t zpool_prop_align_right(zpool_prop_t); 379 380 /* 381 * Functions shared by zfs and zpool property management. 382 */ 383 extern int zprop_iter(zprop_func func, void *cb, boolean_t show_all, 384 boolean_t ordered, zfs_type_t type); 385 extern int zprop_get_list(libzfs_handle_t *, char *, zprop_list_t **, 386 zfs_type_t); 387 extern void zprop_free_list(zprop_list_t *); 388 389 /* 390 * Functions for printing zfs or zpool properties 391 */ 392 typedef struct zprop_get_cbdata { 393 int cb_sources; 394 int cb_columns[4]; 395 int cb_colwidths[5]; 396 boolean_t cb_scripted; 397 boolean_t cb_literal; 398 boolean_t cb_first; 399 zprop_list_t *cb_proplist; 400 zfs_type_t cb_type; 401 } zprop_get_cbdata_t; 402 403 void zprop_print_one_property(const char *, zprop_get_cbdata_t *, 404 const char *, const char *, zprop_source_t, const char *); 405 406 #define GET_COL_NAME 1 407 #define GET_COL_PROPERTY 2 408 #define GET_COL_VALUE 3 409 #define GET_COL_SOURCE 4 410 411 /* 412 * Iterator functions. 413 */ 414 typedef int (*zfs_iter_f)(zfs_handle_t *, void *); 415 extern int zfs_iter_root(libzfs_handle_t *, zfs_iter_f, void *); 416 extern int zfs_iter_children(zfs_handle_t *, zfs_iter_f, void *); 417 extern int zfs_iter_dependents(zfs_handle_t *, boolean_t, zfs_iter_f, void *); 418 extern int zfs_iter_filesystems(zfs_handle_t *, zfs_iter_f, void *); 419 extern int zfs_iter_snapshots(zfs_handle_t *, zfs_iter_f, void *); 420 421 /* 422 * Functions to create and destroy datasets. 423 */ 424 extern int zfs_create(libzfs_handle_t *, const char *, zfs_type_t, 425 nvlist_t *); 426 extern int zfs_create_ancestors(libzfs_handle_t *, const char *); 427 extern int zfs_destroy(zfs_handle_t *); 428 extern int zfs_destroy_snaps(zfs_handle_t *, char *); 429 extern int zfs_clone(zfs_handle_t *, const char *, nvlist_t *); 430 extern int zfs_snapshot(libzfs_handle_t *, const char *, boolean_t); 431 extern int zfs_rollback(zfs_handle_t *, zfs_handle_t *, boolean_t); 432 extern int zfs_rename(zfs_handle_t *, const char *, boolean_t); 433 extern int zfs_send(zfs_handle_t *, const char *, const char *, 434 boolean_t, boolean_t, boolean_t, boolean_t, int); 435 extern int zfs_promote(zfs_handle_t *); 436 437 typedef struct recvflags { 438 /* print informational messages (ie, -v was specified) */ 439 int verbose : 1; 440 441 /* the destination is a prefix, not the exact fs (ie, -d) */ 442 int isprefix : 1; 443 444 /* do not actually do the recv, just check if it would work (ie, -n) */ 445 int dryrun : 1; 446 447 /* rollback/destroy filesystems as necessary (eg, -F) */ 448 int force : 1; 449 450 /* set "canmount=off" on all modified filesystems */ 451 int canmountoff : 1; 452 453 /* byteswap flag is used internally; callers need not specify */ 454 int byteswap : 1; 455 } recvflags_t; 456 457 extern int zfs_receive(libzfs_handle_t *, const char *, recvflags_t, 458 int, avl_tree_t *); 459 460 /* 461 * Miscellaneous functions. 462 */ 463 extern const char *zfs_type_to_name(zfs_type_t); 464 extern void zfs_refresh_properties(zfs_handle_t *); 465 extern int zfs_name_valid(const char *, zfs_type_t); 466 extern zfs_handle_t *zfs_path_to_zhandle(libzfs_handle_t *, char *, zfs_type_t); 467 extern boolean_t zfs_dataset_exists(libzfs_handle_t *, const char *, 468 zfs_type_t); 469 extern int zfs_spa_version(zfs_handle_t *, int *); 470 471 /* 472 * dataset permission functions. 473 */ 474 extern int zfs_perm_set(zfs_handle_t *, nvlist_t *); 475 extern int zfs_perm_remove(zfs_handle_t *, nvlist_t *); 476 extern int zfs_build_perms(zfs_handle_t *, char *, char *, 477 zfs_deleg_who_type_t, zfs_deleg_inherit_t, nvlist_t **nvlist_t); 478 extern int zfs_perm_get(zfs_handle_t *, zfs_allow_t **); 479 extern void zfs_free_allows(zfs_allow_t *); 480 extern void zfs_deleg_permissions(void); 481 482 /* 483 * Mount support functions. 484 */ 485 extern boolean_t is_mounted(libzfs_handle_t *, const char *special, char **); 486 extern boolean_t zfs_is_mounted(zfs_handle_t *, char **); 487 extern int zfs_mount(zfs_handle_t *, const char *, int); 488 extern int zfs_unmount(zfs_handle_t *, const char *, int); 489 extern int zfs_unmountall(zfs_handle_t *, int); 490 491 /* 492 * Share support functions. 493 */ 494 extern boolean_t zfs_is_shared(zfs_handle_t *); 495 extern int zfs_share(zfs_handle_t *); 496 extern int zfs_unshare(zfs_handle_t *); 497 498 /* 499 * Protocol-specific share support functions. 500 */ 501 extern boolean_t zfs_is_shared_nfs(zfs_handle_t *, char **); 502 extern boolean_t zfs_is_shared_smb(zfs_handle_t *, char **); 503 extern int zfs_share_nfs(zfs_handle_t *); 504 extern int zfs_share_smb(zfs_handle_t *); 505 extern int zfs_shareall(zfs_handle_t *); 506 extern int zfs_unshare_nfs(zfs_handle_t *, const char *); 507 extern int zfs_unshare_smb(zfs_handle_t *, const char *); 508 extern int zfs_unshareall_nfs(zfs_handle_t *); 509 extern int zfs_unshareall_smb(zfs_handle_t *); 510 extern int zfs_unshareall_bypath(zfs_handle_t *, const char *); 511 extern int zfs_unshareall(zfs_handle_t *); 512 extern boolean_t zfs_is_shared_iscsi(zfs_handle_t *); 513 extern int zfs_share_iscsi(zfs_handle_t *); 514 extern int zfs_unshare_iscsi(zfs_handle_t *); 515 extern int zfs_iscsi_perm_check(libzfs_handle_t *, char *, ucred_t *); 516 extern int zfs_deleg_share_nfs(libzfs_handle_t *, char *, char *, 517 void *, void *, int, zfs_share_op_t); 518 519 /* 520 * When dealing with nvlists, verify() is extremely useful 521 */ 522 #ifdef NDEBUG 523 #define verify(EX) ((void)(EX)) 524 #else 525 #define verify(EX) assert(EX) 526 #endif 527 528 /* 529 * Utility function to convert a number to a human-readable form. 530 */ 531 extern void zfs_nicenum(uint64_t, char *, size_t); 532 extern int zfs_nicestrtonum(libzfs_handle_t *, const char *, uint64_t *); 533 534 /* 535 * Given a device or file, determine if it is part of a pool. 536 */ 537 extern int zpool_in_use(libzfs_handle_t *, int, pool_state_t *, char **, 538 boolean_t *); 539 540 /* 541 * ftyp special. Read the label from a given device. 542 */ 543 extern int zpool_read_label(int, nvlist_t **); 544 545 /* 546 * Create and remove zvol /dev links. 547 */ 548 extern int zpool_create_zvol_links(zpool_handle_t *); 549 extern int zpool_remove_zvol_links(zpool_handle_t *); 550 551 /* is this zvol valid for use as a dump device? */ 552 extern int zvol_check_dump_config(char *); 553 554 /* 555 * Enable and disable datasets within a pool by mounting/unmounting and 556 * sharing/unsharing them. 557 */ 558 extern int zpool_enable_datasets(zpool_handle_t *, const char *, int); 559 extern int zpool_disable_datasets(zpool_handle_t *, boolean_t); 560 561 #ifdef __cplusplus 562 } 563 #endif 564 565 #endif /* _LIBZFS_H */ 566