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