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.
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.
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]
23 * Copyright 2008 Sun Microsystems, Inc. All rights reserved.
24 * Use is subject to license terms.
31 #include <libnvpair.h>
32 #include <sys/mnttab.h>
33 #include <sys/param.h>
34 #include <sys/types.h>
35 #include <sys/varargs.h>
36 #include <sys/fs/zfs.h>
45 * Miscellaneous ZFS constants
47 #define ZFS_MAXNAMELEN MAXNAMELEN
48 #define ZPOOL_MAXNAMELEN MAXNAMELEN
49 #define ZFS_MAXPROPLEN MAXPATHLEN
50 #define ZPOOL_MAXPROPLEN MAXPATHLEN
56 EZFS_NOMEM = 2000, /* out of memory */
57 EZFS_BADPROP, /* invalid property value */
58 EZFS_PROPREADONLY, /* cannot set readonly property */
59 EZFS_PROPTYPE, /* property does not apply to dataset type */
60 EZFS_PROPNONINHERIT, /* property is not inheritable */
61 EZFS_PROPSPACE, /* bad quota or reservation */
62 EZFS_BADTYPE, /* dataset is not of appropriate type */
63 EZFS_BUSY, /* pool or dataset is busy */
64 EZFS_EXISTS, /* pool or dataset already exists */
65 EZFS_NOENT, /* no such pool or dataset */
66 EZFS_BADSTREAM, /* bad backup stream */
67 EZFS_DSREADONLY, /* dataset is readonly */
68 EZFS_VOLTOOBIG, /* volume is too large for 32-bit system */
69 EZFS_VOLHASDATA, /* volume already contains data */
70 EZFS_INVALIDNAME, /* invalid dataset name */
71 EZFS_BADRESTORE, /* unable to restore to destination */
72 EZFS_BADBACKUP, /* backup failed */
73 EZFS_BADTARGET, /* bad attach/detach/replace target */
74 EZFS_NODEVICE, /* no such device in pool */
75 EZFS_BADDEV, /* invalid device to add */
76 EZFS_NOREPLICAS, /* no valid replicas */
77 EZFS_RESILVERING, /* currently resilvering */
78 EZFS_BADVERSION, /* unsupported version */
79 EZFS_POOLUNAVAIL, /* pool is currently unavailable */
80 EZFS_DEVOVERFLOW, /* too many devices in one vdev */
81 EZFS_BADPATH, /* must be an absolute path */
82 EZFS_CROSSTARGET, /* rename or clone across pool or dataset */
83 EZFS_ZONED, /* used improperly in local zone */
84 EZFS_MOUNTFAILED, /* failed to mount dataset */
85 EZFS_UMOUNTFAILED, /* failed to unmount dataset */
86 EZFS_UNSHARENFSFAILED, /* unshare(1M) failed */
87 EZFS_SHARENFSFAILED, /* share(1M) failed */
88 EZFS_DEVLINKS, /* failed to create zvol links */
89 EZFS_PERM, /* permission denied */
90 EZFS_NOSPC, /* out of space */
91 EZFS_IO, /* I/O error */
92 EZFS_INTR, /* signal received */
93 EZFS_ISSPARE, /* device is a hot spare */
94 EZFS_INVALCONFIG, /* invalid vdev configuration */
95 EZFS_RECURSIVE, /* recursive dependency */
96 EZFS_NOHISTORY, /* no history object */
97 EZFS_UNSHAREISCSIFAILED, /* iscsitgtd failed request to unshare */
98 EZFS_SHAREISCSIFAILED, /* iscsitgtd failed request to share */
99 EZFS_POOLPROPS, /* couldn't retrieve pool props */
100 EZFS_POOL_NOTSUP, /* ops not supported for this type of pool */
101 EZFS_POOL_INVALARG, /* invalid argument for this pool operation */
102 EZFS_NAMETOOLONG, /* dataset name is too long */
103 EZFS_OPENFAILED, /* open of device failed */
104 EZFS_NOCAP, /* couldn't get capacity */
105 EZFS_LABELFAILED, /* write of label failed */
106 EZFS_ISCSISVCUNAVAIL, /* iscsi service unavailable */
107 EZFS_BADWHO, /* invalid permission who */
108 EZFS_BADPERM, /* invalid permission */
109 EZFS_BADPERMSET, /* invalid permission set name */
110 EZFS_NODELEGATION, /* delegated administration is disabled */
111 EZFS_PERMRDONLY, /* pemissions are readonly */
112 EZFS_UNSHARESMBFAILED, /* failed to unshare over smb */
113 EZFS_SHARESMBFAILED, /* failed to share over smb */
114 EZFS_BADCACHE, /* bad cache file */
115 EZFS_ISL2CACHE, /* device is for the level 2 ARC */
116 EZFS_VDEVNOTSUP, /* unsupported vdev type */
117 EZFS_NOTSUP, /* ops not supported on this dataset */
118 EZFS_ACTIVE_SPARE, /* pool has active shared spare devices */
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.
135 typedef struct zfs_perm_node {
137 char z_pname[MAXPATHLEN];
140 typedef struct zfs_allow_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 */
148 typedef struct zfs_allow {
149 struct zfs_allow *z_next;
150 char z_setpoint[MAXPATHLEN];
152 avl_tree_t z_crperms;
155 avl_tree_t z_everyone;
161 typedef struct zfs_handle zfs_handle_t;
162 typedef struct zpool_handle zpool_handle_t;
163 typedef struct libzfs_handle libzfs_handle_t;
166 * Library initialization
168 extern libzfs_handle_t *libzfs_init(void);
169 extern void libzfs_fini(libzfs_handle_t *);
171 extern libzfs_handle_t *zpool_get_handle(zpool_handle_t *);
172 extern libzfs_handle_t *zfs_get_handle(zfs_handle_t *);
174 extern void libzfs_print_on_error(libzfs_handle_t *, boolean_t);
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 extern void libzfs_mnttab_init(libzfs_handle_t *);
180 extern void libzfs_mnttab_fini(libzfs_handle_t *);
181 extern int libzfs_mnttab_find(libzfs_handle_t *, const char *,
183 extern void libzfs_mnttab_add(libzfs_handle_t *, const char *,
184 const char *, const char *);
185 extern void libzfs_mnttab_remove(libzfs_handle_t *, const char *);
188 * Basic handle functions
190 extern zpool_handle_t *zpool_open(libzfs_handle_t *, const char *);
191 extern zpool_handle_t *zpool_open_canfail(libzfs_handle_t *, const char *);
192 extern void zpool_close(zpool_handle_t *);
193 extern const char *zpool_get_name(zpool_handle_t *);
194 extern int zpool_get_state(zpool_handle_t *);
195 extern char *zpool_state_to_name(vdev_state_t, vdev_aux_t);
196 extern void zpool_free_handles(libzfs_handle_t *);
199 * Iterate over all active pools in the system.
201 typedef int (*zpool_iter_f)(zpool_handle_t *, void *);
202 extern int zpool_iter(libzfs_handle_t *, zpool_iter_f, void *);
205 * Functions to create and destroy pools
207 extern int zpool_create(libzfs_handle_t *, const char *, nvlist_t *,
208 nvlist_t *, nvlist_t *);
209 extern int zpool_destroy(zpool_handle_t *);
210 extern int zpool_add(zpool_handle_t *, nvlist_t *);
213 * Functions to manipulate pool and vdev state
215 extern int zpool_scrub(zpool_handle_t *, pool_scrub_type_t);
216 extern int zpool_clear(zpool_handle_t *, const char *);
218 extern int zpool_vdev_online(zpool_handle_t *, const char *, int,
220 extern int zpool_vdev_offline(zpool_handle_t *, const char *, boolean_t);
221 extern int zpool_vdev_attach(zpool_handle_t *, const char *,
222 const char *, nvlist_t *, int);
223 extern int zpool_vdev_detach(zpool_handle_t *, const char *);
224 extern int zpool_vdev_remove(zpool_handle_t *, const char *);
226 extern int zpool_vdev_fault(zpool_handle_t *, uint64_t);
227 extern int zpool_vdev_degrade(zpool_handle_t *, uint64_t);
228 extern int zpool_vdev_clear(zpool_handle_t *, uint64_t);
230 extern nvlist_t *zpool_find_vdev(zpool_handle_t *, const char *, boolean_t *,
231 boolean_t *, boolean_t *);
232 extern int zpool_label_disk(libzfs_handle_t *, zpool_handle_t *, char *);
235 * Functions to manage pool properties
237 extern int zpool_set_prop(zpool_handle_t *, const char *, const char *);
238 extern int zpool_get_prop(zpool_handle_t *, zpool_prop_t, char *,
239 size_t proplen, zprop_source_t *);
240 extern uint64_t zpool_get_prop_int(zpool_handle_t *, zpool_prop_t,
243 extern const char *zpool_prop_to_name(zpool_prop_t);
244 extern const char *zpool_prop_values(zpool_prop_t);
247 * Pool health statistics.
251 * The following correspond to faults as defined in the (fault.fs.zfs.*)
252 * event namespace. Each is associated with a corresponding message ID.
254 ZPOOL_STATUS_CORRUPT_CACHE, /* corrupt /kernel/drv/zpool.cache */
255 ZPOOL_STATUS_MISSING_DEV_R, /* missing device with replicas */
256 ZPOOL_STATUS_MISSING_DEV_NR, /* missing device with no replicas */
257 ZPOOL_STATUS_CORRUPT_LABEL_R, /* bad device label with replicas */
258 ZPOOL_STATUS_CORRUPT_LABEL_NR, /* bad device label with no replicas */
259 ZPOOL_STATUS_BAD_GUID_SUM, /* sum of device guids didn't match */
260 ZPOOL_STATUS_CORRUPT_POOL, /* pool metadata is corrupted */
261 ZPOOL_STATUS_CORRUPT_DATA, /* data errors in user (meta)data */
262 ZPOOL_STATUS_FAILING_DEV, /* device experiencing errors */
263 ZPOOL_STATUS_VERSION_NEWER, /* newer on-disk version */
264 ZPOOL_STATUS_HOSTID_MISMATCH, /* last accessed by another system */
265 ZPOOL_STATUS_IO_FAILURE_WAIT, /* failed I/O, failmode 'wait' */
266 ZPOOL_STATUS_IO_FAILURE_CONTINUE, /* failed I/O, failmode 'continue' */
267 ZPOOL_STATUS_FAULTED_DEV_R, /* faulted device with replicas */
268 ZPOOL_STATUS_FAULTED_DEV_NR, /* faulted device with no replicas */
269 ZPOOL_STATUS_BAD_LOG, /* cannot read log chain(s) */
272 * The following are not faults per se, but still an error possibly
273 * requiring administrative attention. There is no corresponding
276 ZPOOL_STATUS_VERSION_OLDER, /* older on-disk version */
277 ZPOOL_STATUS_RESILVERING, /* device being resilvered */
278 ZPOOL_STATUS_OFFLINE_DEV, /* device online */
281 * Finally, the following indicates a healthy pool.
286 extern zpool_status_t zpool_get_status(zpool_handle_t *, char **);
287 extern zpool_status_t zpool_import_status(nvlist_t *, char **);
290 * Statistics and configuration functions.
292 extern nvlist_t *zpool_get_config(zpool_handle_t *, nvlist_t **);
293 extern int zpool_refresh_stats(zpool_handle_t *, boolean_t *);
294 extern int zpool_get_errlog(zpool_handle_t *, nvlist_t **);
297 * Import and export functions
299 extern int zpool_export(zpool_handle_t *, boolean_t);
300 extern int zpool_export_force(zpool_handle_t *);
301 extern int zpool_import(libzfs_handle_t *, nvlist_t *, const char *,
303 extern int zpool_import_props(libzfs_handle_t *, nvlist_t *, const char *,
304 nvlist_t *, boolean_t);
307 * Search for pools to import
309 extern nvlist_t *zpool_find_import(libzfs_handle_t *, int, char **);
310 extern nvlist_t *zpool_find_import_cached(libzfs_handle_t *, const char *,
312 extern nvlist_t *zpool_find_import_byname(libzfs_handle_t *, int, char **,
314 extern nvlist_t *zpool_find_import_byguid(libzfs_handle_t *, int, char **,
316 extern nvlist_t *zpool_find_import_activeok(libzfs_handle_t *, int, char **);
319 * Miscellaneous pool functions
323 extern char *zpool_vdev_name(libzfs_handle_t *, zpool_handle_t *, nvlist_t *);
324 extern int zpool_upgrade(zpool_handle_t *, uint64_t);
325 extern int zpool_get_history(zpool_handle_t *, nvlist_t **);
326 extern void zpool_set_history_str(const char *subcommand, int argc,
327 char **argv, char *history_str);
328 extern int zpool_stage_history(libzfs_handle_t *, const char *);
329 extern void zpool_obj_to_path(zpool_handle_t *, uint64_t, uint64_t, char *,
331 extern int zfs_ioctl(libzfs_handle_t *, int, struct zfs_cmd *);
332 extern int zpool_get_physpath(zpool_handle_t *, char *);
334 * Basic handle manipulations. These functions do not create or destroy the
335 * underlying datasets, only the references to them.
337 extern zfs_handle_t *zfs_open(libzfs_handle_t *, const char *, int);
338 extern void zfs_close(zfs_handle_t *);
339 extern zfs_type_t zfs_get_type(const zfs_handle_t *);
340 extern const char *zfs_get_name(const zfs_handle_t *);
341 extern zpool_handle_t *zfs_get_pool_handle(const zfs_handle_t *);
344 * Property management functions. Some functions are shared with the kernel,
345 * and are found in sys/fs/zfs.h.
349 * zfs dataset property management
351 extern const char *zfs_prop_default_string(zfs_prop_t);
352 extern uint64_t zfs_prop_default_numeric(zfs_prop_t);
353 extern const char *zfs_prop_column_name(zfs_prop_t);
354 extern boolean_t zfs_prop_align_right(zfs_prop_t);
356 extern nvlist_t *zfs_valid_proplist(libzfs_handle_t *, zfs_type_t,
357 nvlist_t *, uint64_t, zfs_handle_t *, const char *);
359 extern const char *zfs_prop_to_name(zfs_prop_t);
360 extern int zfs_prop_set(zfs_handle_t *, const char *, const char *);
361 extern int zfs_prop_get(zfs_handle_t *, zfs_prop_t, char *, size_t,
362 zprop_source_t *, char *, size_t, boolean_t);
363 extern int zfs_prop_get_numeric(zfs_handle_t *, zfs_prop_t, uint64_t *,
364 zprop_source_t *, char *, size_t);
365 extern uint64_t zfs_prop_get_int(zfs_handle_t *, zfs_prop_t);
366 extern int zfs_prop_inherit(zfs_handle_t *, const char *);
367 extern const char *zfs_prop_values(zfs_prop_t);
368 extern int zfs_prop_is_string(zfs_prop_t prop);
369 extern nvlist_t *zfs_get_user_props(zfs_handle_t *);
371 typedef struct zprop_list {
374 struct zprop_list *pl_next;
380 extern int zfs_expand_proplist(zfs_handle_t *, zprop_list_t **);
382 #define ZFS_MOUNTPOINT_NONE "none"
383 #define ZFS_MOUNTPOINT_LEGACY "legacy"
386 * zpool property management
388 extern int zpool_expand_proplist(zpool_handle_t *, zprop_list_t **);
389 extern const char *zpool_prop_default_string(zpool_prop_t);
390 extern uint64_t zpool_prop_default_numeric(zpool_prop_t);
391 extern const char *zpool_prop_column_name(zpool_prop_t);
392 extern boolean_t zpool_prop_align_right(zpool_prop_t);
395 * Functions shared by zfs and zpool property management.
397 extern int zprop_iter(zprop_func func, void *cb, boolean_t show_all,
398 boolean_t ordered, zfs_type_t type);
399 extern int zprop_get_list(libzfs_handle_t *, char *, zprop_list_t **,
401 extern void zprop_free_list(zprop_list_t *);
404 * Functions for printing zfs or zpool properties
406 typedef struct zprop_get_cbdata {
410 boolean_t cb_scripted;
411 boolean_t cb_literal;
413 zprop_list_t *cb_proplist;
415 } zprop_get_cbdata_t;
417 void zprop_print_one_property(const char *, zprop_get_cbdata_t *,
418 const char *, const char *, zprop_source_t, const char *);
420 #define GET_COL_NAME 1
421 #define GET_COL_PROPERTY 2
422 #define GET_COL_VALUE 3
423 #define GET_COL_SOURCE 4
426 * Iterator functions.
428 typedef int (*zfs_iter_f)(zfs_handle_t *, void *);
429 extern int zfs_iter_root(libzfs_handle_t *, zfs_iter_f, void *);
430 extern int zfs_iter_children(zfs_handle_t *, zfs_iter_f, void *);
431 extern int zfs_iter_dependents(zfs_handle_t *, boolean_t, zfs_iter_f, void *);
432 extern int zfs_iter_filesystems(zfs_handle_t *, zfs_iter_f, void *);
433 extern int zfs_iter_snapshots(zfs_handle_t *, zfs_iter_f, void *);
436 * Functions to create and destroy datasets.
438 extern int zfs_create(libzfs_handle_t *, const char *, zfs_type_t,
440 extern int zfs_create_ancestors(libzfs_handle_t *, const char *);
441 extern int zfs_destroy(zfs_handle_t *);
442 extern int zfs_destroy_snaps(zfs_handle_t *, char *);
443 extern int zfs_clone(zfs_handle_t *, const char *, nvlist_t *);
444 extern int zfs_snapshot(libzfs_handle_t *, const char *, boolean_t, nvlist_t *);
445 extern int zfs_rollback(zfs_handle_t *, zfs_handle_t *, boolean_t);
446 extern int zfs_rename(zfs_handle_t *, const char *, boolean_t);
447 extern int zfs_send(zfs_handle_t *, const char *, const char *,
448 boolean_t, boolean_t, boolean_t, boolean_t, int);
449 extern int zfs_promote(zfs_handle_t *);
451 typedef struct recvflags {
452 /* print informational messages (ie, -v was specified) */
455 /* the destination is a prefix, not the exact fs (ie, -d) */
458 /* do not actually do the recv, just check if it would work (ie, -n) */
461 /* rollback/destroy filesystems as necessary (eg, -F) */
464 /* set "canmount=off" on all modified filesystems */
467 /* byteswap flag is used internally; callers need not specify */
471 extern int zfs_receive(libzfs_handle_t *, const char *, recvflags_t,
475 * Miscellaneous functions.
477 extern const char *zfs_type_to_name(zfs_type_t);
478 extern void zfs_refresh_properties(zfs_handle_t *);
479 extern int zfs_name_valid(const char *, zfs_type_t);
480 extern zfs_handle_t *zfs_path_to_zhandle(libzfs_handle_t *, char *, zfs_type_t);
481 extern boolean_t zfs_dataset_exists(libzfs_handle_t *, const char *,
483 extern int zfs_spa_version(zfs_handle_t *, int *);
486 * dataset permission functions.
488 extern int zfs_perm_set(zfs_handle_t *, nvlist_t *);
489 extern int zfs_perm_remove(zfs_handle_t *, nvlist_t *);
490 extern int zfs_build_perms(zfs_handle_t *, char *, char *,
491 zfs_deleg_who_type_t, zfs_deleg_inherit_t, nvlist_t **nvlist_t);
492 extern int zfs_perm_get(zfs_handle_t *, zfs_allow_t **);
493 extern void zfs_free_allows(zfs_allow_t *);
494 extern void zfs_deleg_permissions(void);
497 * Mount support functions.
499 extern boolean_t is_mounted(libzfs_handle_t *, const char *special, char **);
500 extern boolean_t zfs_is_mounted(zfs_handle_t *, char **);
501 extern int zfs_mount(zfs_handle_t *, const char *, int);
502 extern int zfs_unmount(zfs_handle_t *, const char *, int);
503 extern int zfs_unmountall(zfs_handle_t *, int);
506 * Share support functions.
508 extern boolean_t zfs_is_shared(zfs_handle_t *);
509 extern int zfs_share(zfs_handle_t *);
510 extern int zfs_unshare(zfs_handle_t *);
513 * Protocol-specific share support functions.
515 extern boolean_t zfs_is_shared_nfs(zfs_handle_t *, char **);
516 extern boolean_t zfs_is_shared_smb(zfs_handle_t *, char **);
517 extern int zfs_share_nfs(zfs_handle_t *);
518 extern int zfs_share_smb(zfs_handle_t *);
519 extern int zfs_shareall(zfs_handle_t *);
520 extern int zfs_unshare_nfs(zfs_handle_t *, const char *);
521 extern int zfs_unshare_smb(zfs_handle_t *, const char *);
522 extern int zfs_unshareall_nfs(zfs_handle_t *);
523 extern int zfs_unshareall_smb(zfs_handle_t *);
524 extern int zfs_unshareall_bypath(zfs_handle_t *, const char *);
525 extern int zfs_unshareall(zfs_handle_t *);
526 extern boolean_t zfs_is_shared_iscsi(zfs_handle_t *);
527 extern int zfs_share_iscsi(zfs_handle_t *);
528 extern int zfs_unshare_iscsi(zfs_handle_t *);
529 extern int zfs_iscsi_perm_check(libzfs_handle_t *, char *, ucred_t *);
530 extern int zfs_deleg_share_nfs(libzfs_handle_t *, char *, char *,
531 void *, void *, int, zfs_share_op_t);
534 * When dealing with nvlists, verify() is extremely useful
537 #define verify(EX) ((void)(EX))
539 #define verify(EX) assert(EX)
543 * Utility function to convert a number to a human-readable form.
545 extern void zfs_nicenum(uint64_t, char *, size_t);
546 extern int zfs_nicestrtonum(libzfs_handle_t *, const char *, uint64_t *);
549 * Given a device or file, determine if it is part of a pool.
551 extern int zpool_in_use(libzfs_handle_t *, int, pool_state_t *, char **,
555 * ftyp special. Read the label from a given device.
557 extern int zpool_read_label(int, nvlist_t **);
560 * Create and remove zvol /dev links.
562 extern int zpool_create_zvol_links(zpool_handle_t *);
563 extern int zpool_remove_zvol_links(zpool_handle_t *);
565 /* is this zvol valid for use as a dump device? */
566 extern int zvol_check_dump_config(char *);
569 * Enable and disable datasets within a pool by mounting/unmounting and
570 * sharing/unsharing them.
572 extern int zpool_enable_datasets(zpool_handle_t *, const char *, int);
573 extern int zpool_disable_datasets(zpool_handle_t *, boolean_t);
579 #endif /* _LIBZFS_H */