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 2007 Sun Microsystems, Inc. All rights reserved.
24 * Use is subject to license terms.
30 #pragma ident "%Z%%M% %I% %E% SMI"
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/zfs_ioctl.h>
45 * Miscellaneous ZFS constants
47 #define ZFS_MAXNAMELEN MAXNAMELEN
48 #define ZPOOL_MAXNAMELEN MAXNAMELEN
49 #define ZFS_MAXPROPLEN MAXPATHLEN
55 EZFS_NOMEM = 2000, /* out of memory */
56 EZFS_BADPROP, /* invalid property value */
57 EZFS_PROPREADONLY, /* cannot set readonly property */
58 EZFS_PROPTYPE, /* property does not apply to dataset type */
59 EZFS_PROPNONINHERIT, /* property is not inheritable */
60 EZFS_PROPSPACE, /* bad quota or reservation */
61 EZFS_BADTYPE, /* dataset is not of appropriate type */
62 EZFS_BUSY, /* pool or dataset is busy */
63 EZFS_EXISTS, /* pool or dataset already exists */
64 EZFS_NOENT, /* no such pool or dataset */
65 EZFS_BADSTREAM, /* bad backup stream */
66 EZFS_DSREADONLY, /* dataset is readonly */
67 EZFS_VOLTOOBIG, /* volume is too large for 32-bit system */
68 EZFS_VOLHASDATA, /* volume already contains data */
69 EZFS_INVALIDNAME, /* invalid dataset name */
70 EZFS_BADRESTORE, /* unable to restore to destination */
71 EZFS_BADBACKUP, /* backup failed */
72 EZFS_BADTARGET, /* bad attach/detach/replace target */
73 EZFS_NODEVICE, /* no such device in pool */
74 EZFS_BADDEV, /* invalid device to add */
75 EZFS_NOREPLICAS, /* no valid replicas */
76 EZFS_RESILVERING, /* currently resilvering */
77 EZFS_BADVERSION, /* unsupported version */
78 EZFS_POOLUNAVAIL, /* pool is currently unavailable */
79 EZFS_DEVOVERFLOW, /* too many devices in one vdev */
80 EZFS_BADPATH, /* must be an absolute path */
81 EZFS_CROSSTARGET, /* rename or clone across pool or dataset */
82 EZFS_ZONED, /* used improperly in local zone */
83 EZFS_MOUNTFAILED, /* failed to mount dataset */
84 EZFS_UMOUNTFAILED, /* failed to unmount dataset */
85 EZFS_UNSHARENFSFAILED, /* unshare(1M) failed */
86 EZFS_SHARENFSFAILED, /* share(1M) failed */
87 EZFS_DEVLINKS, /* failed to create zvol links */
88 EZFS_PERM, /* permission denied */
89 EZFS_NOSPC, /* out of space */
90 EZFS_IO, /* I/O error */
91 EZFS_INTR, /* signal received */
92 EZFS_ISSPARE, /* device is a hot spare */
93 EZFS_INVALCONFIG, /* invalid vdev configuration */
94 EZFS_RECURSIVE, /* recursive dependency */
95 EZFS_NOHISTORY, /* no history object */
96 EZFS_UNSHAREISCSIFAILED, /* iscsitgtd failed request to unshare */
97 EZFS_SHAREISCSIFAILED, /* iscsitgtd failed request to share */
98 EZFS_POOLPROPS, /* couldn't retrieve pool props */
99 EZFS_POOL_NOTSUP, /* ops not supported for this type of pool */
100 EZFS_POOL_INVALARG, /* invalid argument for this pool operation */
101 EZFS_NAMETOOLONG, /* dataset name is too long */
108 typedef struct zfs_handle zfs_handle_t;
109 typedef struct zpool_handle zpool_handle_t;
110 typedef struct libzfs_handle libzfs_handle_t;
113 * Library initialization
115 extern libzfs_handle_t *libzfs_init(void);
116 extern void libzfs_fini(libzfs_handle_t *);
118 extern libzfs_handle_t *zpool_get_handle(zpool_handle_t *);
119 extern libzfs_handle_t *zfs_get_handle(zfs_handle_t *);
121 extern void libzfs_print_on_error(libzfs_handle_t *, boolean_t);
123 extern int libzfs_errno(libzfs_handle_t *);
124 extern const char *libzfs_error_action(libzfs_handle_t *);
125 extern const char *libzfs_error_description(libzfs_handle_t *);
128 * Basic handle functions
130 extern zpool_handle_t *zpool_open(libzfs_handle_t *, const char *);
131 extern zpool_handle_t *zpool_open_canfail(libzfs_handle_t *, const char *);
132 extern void zpool_close(zpool_handle_t *);
133 extern const char *zpool_get_name(zpool_handle_t *);
134 extern uint64_t zpool_get_guid(zpool_handle_t *);
135 extern uint64_t zpool_get_space_used(zpool_handle_t *);
136 extern uint64_t zpool_get_space_total(zpool_handle_t *);
137 extern int zpool_get_root(zpool_handle_t *, char *, size_t);
138 extern int zpool_get_state(zpool_handle_t *);
139 extern uint64_t zpool_get_version(zpool_handle_t *);
142 * Iterate over all active pools in the system.
144 typedef int (*zpool_iter_f)(zpool_handle_t *, void *);
145 extern int zpool_iter(libzfs_handle_t *, zpool_iter_f, void *);
148 * Functions to create and destroy pools
150 extern int zpool_create(libzfs_handle_t *, const char *, nvlist_t *,
152 extern int zpool_destroy(zpool_handle_t *);
153 extern int zpool_add(zpool_handle_t *, nvlist_t *);
156 * Functions to manipulate pool and vdev state
158 extern int zpool_scrub(zpool_handle_t *, pool_scrub_type_t);
160 extern int zpool_vdev_online(zpool_handle_t *, const char *);
161 extern int zpool_vdev_offline(zpool_handle_t *, const char *, int);
162 extern int zpool_vdev_attach(zpool_handle_t *, const char *, const char *,
164 extern int zpool_vdev_detach(zpool_handle_t *, const char *);
165 extern int zpool_vdev_remove(zpool_handle_t *, const char *);
166 extern int zpool_clear(zpool_handle_t *, const char *);
167 extern nvlist_t *zpool_find_vdev(zpool_handle_t *, const char *, boolean_t *);
170 * Functions to manage pool properties
172 extern int zpool_set_prop(zpool_handle_t *, const char *, const char *);
173 extern int zpool_get_prop(zpool_handle_t *, zfs_prop_t, char *,
174 size_t proplen, zfs_source_t *);
175 extern const char *zpool_prop_to_name(zpool_prop_t);
176 extern const char *zpool_prop_values(zpool_prop_t);
179 * Pool health statistics.
183 * The following correspond to faults as defined in the (fault.fs.zfs.*)
184 * event namespace. Each is associated with a corresponding message ID.
186 ZPOOL_STATUS_CORRUPT_CACHE, /* corrupt /kernel/drv/zpool.cache */
187 ZPOOL_STATUS_MISSING_DEV_R, /* missing device with replicas */
188 ZPOOL_STATUS_MISSING_DEV_NR, /* missing device with no replicas */
189 ZPOOL_STATUS_CORRUPT_LABEL_R, /* bad device label with replicas */
190 ZPOOL_STATUS_CORRUPT_LABEL_NR, /* bad device label with no replicas */
191 ZPOOL_STATUS_BAD_GUID_SUM, /* sum of device guids didn't match */
192 ZPOOL_STATUS_CORRUPT_POOL, /* pool metadata is corrupted */
193 ZPOOL_STATUS_CORRUPT_DATA, /* data errors in user (meta)data */
194 ZPOOL_STATUS_FAILING_DEV, /* device experiencing errors */
195 ZPOOL_STATUS_VERSION_NEWER, /* newer on-disk version */
196 ZPOOL_STATUS_HOSTID_MISMATCH, /* last accessed by another system */
199 * The following are not faults per se, but still an error possibly
200 * requiring administrative attention. There is no corresponding
203 ZPOOL_STATUS_VERSION_OLDER, /* older on-disk version */
204 ZPOOL_STATUS_RESILVERING, /* device being resilvered */
205 ZPOOL_STATUS_OFFLINE_DEV, /* device online */
208 * Finally, the following indicates a healthy pool.
213 extern zpool_status_t zpool_get_status(zpool_handle_t *, char **);
214 extern zpool_status_t zpool_import_status(nvlist_t *, char **);
217 * Statistics and configuration functions.
219 extern nvlist_t *zpool_get_config(zpool_handle_t *, nvlist_t **);
220 extern int zpool_refresh_stats(zpool_handle_t *, boolean_t *);
221 extern int zpool_get_errlog(zpool_handle_t *, nvlist_t **);
224 * Import and export functions
226 extern int zpool_export(zpool_handle_t *);
227 extern int zpool_import(libzfs_handle_t *, nvlist_t *, const char *,
231 * Search for pools to import
233 extern nvlist_t *zpool_find_import(libzfs_handle_t *, int, char **);
236 * Miscellaneous pool functions
238 extern char *zpool_vdev_name(libzfs_handle_t *, zpool_handle_t *, nvlist_t *);
239 extern int zpool_upgrade(zpool_handle_t *);
240 extern int zpool_get_history(zpool_handle_t *, nvlist_t **);
241 extern void zpool_log_history(libzfs_handle_t *, int, char **, const char *,
242 boolean_t, boolean_t);
243 extern void zpool_obj_to_path(zpool_handle_t *, uint64_t, uint64_t, char *,
247 * Basic handle manipulations. These functions do not create or destroy the
248 * underlying datasets, only the references to them.
250 extern zfs_handle_t *zfs_open(libzfs_handle_t *, const char *, int);
251 extern void zfs_close(zfs_handle_t *);
252 extern zfs_type_t zfs_get_type(const zfs_handle_t *);
253 extern const char *zfs_get_name(const zfs_handle_t *);
256 * Property management functions. Some functions are shared with the kernel,
257 * and are found in sys/fs/zfs.h.
259 extern const char *zfs_prop_to_name(zfs_prop_t);
260 extern int zfs_prop_set(zfs_handle_t *, const char *, const char *);
261 extern int zfs_prop_get(zfs_handle_t *, zfs_prop_t, char *, size_t,
262 zfs_source_t *, char *, size_t, boolean_t);
263 extern int zfs_prop_get_numeric(zfs_handle_t *, zfs_prop_t, uint64_t *,
264 zfs_source_t *, char *, size_t);
265 extern uint64_t zfs_prop_get_int(zfs_handle_t *, zfs_prop_t);
266 extern const char *zfs_prop_get_string(zfs_handle_t *, zfs_prop_t);
267 extern int zfs_prop_inherit(zfs_handle_t *, const char *);
268 extern const char *zfs_prop_values(zfs_prop_t);
269 extern int zfs_prop_valid_for_type(zfs_prop_t, int);
270 extern const char *zfs_prop_default_string(zfs_prop_t prop);
271 extern uint64_t zfs_prop_default_numeric(zfs_prop_t);
272 extern int zfs_prop_is_string(zfs_prop_t prop);
273 extern const char *zfs_prop_column_name(zfs_prop_t);
274 extern boolean_t zfs_prop_align_right(zfs_prop_t);
275 extern void nicebool(int value, char *buf, size_t buflen);
277 typedef struct zfs_proplist {
280 struct zfs_proplist *pl_next;
286 typedef zfs_proplist_t zpool_proplist_t;
288 extern int zfs_get_proplist(libzfs_handle_t *, char *, zfs_proplist_t **);
289 extern int zpool_get_proplist(libzfs_handle_t *, char *, zpool_proplist_t **);
290 extern int zfs_expand_proplist(zfs_handle_t *, zfs_proplist_t **);
291 extern int zpool_expand_proplist(zpool_handle_t *, zpool_proplist_t **);
292 extern void zfs_free_proplist(zfs_proplist_t *);
293 extern nvlist_t *zfs_get_user_props(zfs_handle_t *);
295 #define ZFS_MOUNTPOINT_NONE "none"
296 #define ZFS_MOUNTPOINT_LEGACY "legacy"
299 * Functions for printing properties from zfs/zpool
301 typedef struct libzfs_get_cbdata {
305 boolean_t cb_scripted;
306 boolean_t cb_literal;
308 zfs_proplist_t *cb_proplist;
309 } libzfs_get_cbdata_t;
311 void libzfs_print_one_property(const char *, libzfs_get_cbdata_t *,
312 const char *, const char *, zfs_source_t, const char *);
314 #define GET_COL_NAME 1
315 #define GET_COL_PROPERTY 2
316 #define GET_COL_VALUE 3
317 #define GET_COL_SOURCE 4
320 * Iterator functions.
322 typedef int (*zfs_iter_f)(zfs_handle_t *, void *);
323 extern int zfs_iter_root(libzfs_handle_t *, zfs_iter_f, void *);
324 extern int zfs_iter_children(zfs_handle_t *, zfs_iter_f, void *);
325 extern int zfs_iter_dependents(zfs_handle_t *, boolean_t, zfs_iter_f, void *);
326 extern int zfs_iter_filesystems(zfs_handle_t *, zfs_iter_f, void *);
327 extern int zfs_iter_snapshots(zfs_handle_t *, zfs_iter_f, void *);
330 * Functions to create and destroy datasets.
332 extern int zfs_create(libzfs_handle_t *, const char *, zfs_type_t,
334 extern int zfs_destroy(zfs_handle_t *);
335 extern int zfs_destroy_snaps(zfs_handle_t *, char *);
336 extern int zfs_clone(zfs_handle_t *, const char *, nvlist_t *);
337 extern int zfs_snapshot(libzfs_handle_t *, const char *, boolean_t);
338 extern int zfs_rollback(zfs_handle_t *, zfs_handle_t *, int);
339 extern int zfs_rename(zfs_handle_t *, const char *, int);
340 extern int zfs_send(zfs_handle_t *, const char *, int);
341 extern int zfs_receive(libzfs_handle_t *, const char *, int, int, int,
343 extern int zfs_promote(zfs_handle_t *);
346 * Miscellaneous functions.
348 extern const char *zfs_type_to_name(zfs_type_t);
349 extern void zfs_refresh_properties(zfs_handle_t *);
350 extern int zfs_name_valid(const char *, zfs_type_t);
351 extern int zfs_disable(zfs_handle_t *);
352 extern int zfs_enable(zfs_handle_t *);
353 extern zfs_handle_t *zfs_path_to_zhandle(libzfs_handle_t *, char *, zfs_type_t);
356 * Mount support functions.
358 extern boolean_t is_mounted(libzfs_handle_t *, const char *special, char **);
359 extern boolean_t zfs_is_mounted(zfs_handle_t *, char **);
360 extern int zfs_mount(zfs_handle_t *, const char *, int);
361 extern int zfs_unmount(zfs_handle_t *, const char *, int);
362 extern int zfs_unmountall(zfs_handle_t *, int);
365 * Share support functions.
367 extern boolean_t zfs_is_shared(zfs_handle_t *);
368 extern int zfs_share(zfs_handle_t *);
369 extern int zfs_unshare(zfs_handle_t *);
372 * Protocol-specifc share support functions.
374 extern boolean_t zfs_is_shared_nfs(zfs_handle_t *, char **);
375 extern int zfs_share_nfs(zfs_handle_t *);
376 extern int zfs_unshare_nfs(zfs_handle_t *, const char *);
377 extern int zfs_unshareall_nfs(zfs_handle_t *);
378 extern boolean_t zfs_is_shared_iscsi(zfs_handle_t *);
379 extern int zfs_share_iscsi(zfs_handle_t *);
380 extern int zfs_unshare_iscsi(zfs_handle_t *);
383 * FreeBSD-specific jail support function.
385 extern int zfs_jail(zfs_handle_t *, int, int);
388 * When dealing with nvlists, verify() is extremely useful
392 #define verify(EX) ((void)(EX))
394 #define verify(EX) assert(EX)
399 * Utility function to convert a number to a human-readable form.
401 extern void zfs_nicenum(uint64_t, char *, size_t);
402 extern int zfs_nicestrtonum(libzfs_handle_t *, const char *, uint64_t *);
405 * Pool destroy special. Remove the device information without destroying
406 * the underlying dataset.
408 extern int zfs_remove_link(zfs_handle_t *);
411 * Given a device or file, determine if it is part of a pool.
413 extern int zpool_in_use(libzfs_handle_t *, int, pool_state_t *, char **,
417 * ftyp special. Read the label from a given device.
419 extern int zpool_read_label(int, nvlist_t **);
422 * Create and remove zvol /dev links.
424 extern int zpool_create_zvol_links(zpool_handle_t *);
425 extern int zpool_remove_zvol_links(zpool_handle_t *);
428 * Enable and disable datasets within a pool by mounting/unmounting and
429 * sharing/unsharing them.
431 extern int zpool_enable_datasets(zpool_handle_t *, const char *, int);
432 extern int zpool_disable_datasets(zpool_handle_t *, boolean_t);
435 extern int zmount(const char *, const char *, int, char *, char *, int, char *,
443 #endif /* _LIBZFS_H */