xref: /illumos-gate/usr/src/lib/libzfs/common/libzfs.h (revision 394ab0cbe9de0b3be5bf232d9224a9d050999ae5)
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 #include <assert.h>
31 #include <libnvpair.h>
32 #include <sys/param.h>
33 #include <sys/types.h>
34 #include <sys/varargs.h>
35 #include <sys/fs/zfs.h>
36 #include <sys/avl.h>
37 #include <ucred.h>
38 
39 #ifdef	__cplusplus
40 extern "C" {
41 #endif
42 
43 /*
44  * Miscellaneous ZFS constants
45  */
46 #define	ZFS_MAXNAMELEN		MAXNAMELEN
47 #define	ZPOOL_MAXNAMELEN	MAXNAMELEN
48 #define	ZFS_MAXPROPLEN		MAXPATHLEN
49 #define	ZPOOL_MAXPROPLEN	MAXPATHLEN
50 
51 /*
52  * libzfs errors
53  */
54 enum {
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 */
102 	EZFS_OPENFAILED,	/* open of device failed */
103 	EZFS_NOCAP,		/* couldn't get capacity */
104 	EZFS_LABELFAILED,	/* write of label failed */
105 	EZFS_ISCSISVCUNAVAIL,	/* iscsi service unavailable */
106 	EZFS_BADWHO,		/* invalid permission who */
107 	EZFS_BADPERM,		/* invalid permission */
108 	EZFS_BADPERMSET,	/* invalid permission set name */
109 	EZFS_NODELEGATION,	/* delegated administration is disabled */
110 	EZFS_PERMRDONLY,	/* pemissions are readonly */
111 	EZFS_UNSHARESMBFAILED,	/* failed to unshare over smb */
112 	EZFS_SHARESMBFAILED,	/* failed to share over smb */
113 	EZFS_BADCACHE,		/* bad cache file */
114 	EZFS_ISL2CACHE,		/* device is for the level 2 ARC */
115 	EZFS_VDEVNOTSUP,	/* unsupported vdev type */
116 	EZFS_NOTSUP,		/* ops not supported on this dataset */
117 	EZFS_ACTIVE_SPARE,	/* pool has active shared spare devices */
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 *, 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 *, 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 	ZPOOL_STATUS_BAD_LOG,		/* cannot read log chain(s) */
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 *, boolean_t);
292 extern int zpool_export_force(zpool_handle_t *);
293 extern int zpool_import(libzfs_handle_t *, nvlist_t *, const char *,
294     char *altroot);
295 extern int zpool_import_props(libzfs_handle_t *, nvlist_t *, const char *,
296     nvlist_t *, boolean_t);
297 
298 /*
299  * Search for pools to import
300  */
301 extern nvlist_t *zpool_find_import(libzfs_handle_t *, int, char **);
302 extern nvlist_t *zpool_find_import_cached(libzfs_handle_t *, const char *,
303     char *, uint64_t);
304 extern nvlist_t *zpool_find_import_byname(libzfs_handle_t *, int, char **,
305     char *);
306 extern nvlist_t *zpool_find_import_byguid(libzfs_handle_t *, int, char **,
307     uint64_t);
308 extern nvlist_t *zpool_find_import_activeok(libzfs_handle_t *, int, char **);
309 
310 /*
311  * Miscellaneous pool functions
312  */
313 struct zfs_cmd;
314 
315 extern char *zpool_vdev_name(libzfs_handle_t *, zpool_handle_t *, nvlist_t *);
316 extern int zpool_upgrade(zpool_handle_t *, uint64_t);
317 extern int zpool_get_history(zpool_handle_t *, nvlist_t **);
318 extern void zpool_set_history_str(const char *subcommand, int argc,
319     char **argv, char *history_str);
320 extern int zpool_stage_history(libzfs_handle_t *, const char *);
321 extern void zpool_obj_to_path(zpool_handle_t *, uint64_t, uint64_t, char *,
322     size_t len);
323 extern int zfs_ioctl(libzfs_handle_t *, int, struct zfs_cmd *);
324 extern int zpool_get_physpath(zpool_handle_t *, char *);
325 /*
326  * Basic handle manipulations.  These functions do not create or destroy the
327  * underlying datasets, only the references to them.
328  */
329 extern zfs_handle_t *zfs_open(libzfs_handle_t *, const char *, int);
330 extern void zfs_close(zfs_handle_t *);
331 extern zfs_type_t zfs_get_type(const zfs_handle_t *);
332 extern const char *zfs_get_name(const zfs_handle_t *);
333 extern zpool_handle_t *zfs_get_pool_handle(const zfs_handle_t *);
334 
335 /*
336  * Property management functions.  Some functions are shared with the kernel,
337  * and are found in sys/fs/zfs.h.
338  */
339 
340 /*
341  * zfs dataset property management
342  */
343 extern const char *zfs_prop_default_string(zfs_prop_t);
344 extern uint64_t zfs_prop_default_numeric(zfs_prop_t);
345 extern const char *zfs_prop_column_name(zfs_prop_t);
346 extern boolean_t zfs_prop_align_right(zfs_prop_t);
347 
348 extern nvlist_t *zfs_valid_proplist(libzfs_handle_t *, zfs_type_t,
349     nvlist_t *, uint64_t, zfs_handle_t *, const char *);
350 
351 extern const char *zfs_prop_to_name(zfs_prop_t);
352 extern int zfs_prop_set(zfs_handle_t *, const char *, const char *);
353 extern int zfs_prop_get(zfs_handle_t *, zfs_prop_t, char *, size_t,
354     zprop_source_t *, char *, size_t, boolean_t);
355 extern int zfs_prop_get_numeric(zfs_handle_t *, zfs_prop_t, uint64_t *,
356     zprop_source_t *, char *, size_t);
357 extern uint64_t zfs_prop_get_int(zfs_handle_t *, zfs_prop_t);
358 extern int zfs_prop_inherit(zfs_handle_t *, const char *);
359 extern const char *zfs_prop_values(zfs_prop_t);
360 extern int zfs_prop_is_string(zfs_prop_t prop);
361 extern nvlist_t *zfs_get_user_props(zfs_handle_t *);
362 
363 typedef struct zprop_list {
364 	int		pl_prop;
365 	char		*pl_user_prop;
366 	struct zprop_list *pl_next;
367 	boolean_t	pl_all;
368 	size_t		pl_width;
369 	boolean_t	pl_fixed;
370 } zprop_list_t;
371 
372 extern int zfs_expand_proplist(zfs_handle_t *, zprop_list_t **);
373 
374 #define	ZFS_MOUNTPOINT_NONE	"none"
375 #define	ZFS_MOUNTPOINT_LEGACY	"legacy"
376 
377 /*
378  * zpool property management
379  */
380 extern int zpool_expand_proplist(zpool_handle_t *, zprop_list_t **);
381 extern const char *zpool_prop_default_string(zpool_prop_t);
382 extern uint64_t zpool_prop_default_numeric(zpool_prop_t);
383 extern const char *zpool_prop_column_name(zpool_prop_t);
384 extern boolean_t zpool_prop_align_right(zpool_prop_t);
385 
386 /*
387  * Functions shared by zfs and zpool property management.
388  */
389 extern int zprop_iter(zprop_func func, void *cb, boolean_t show_all,
390     boolean_t ordered, zfs_type_t type);
391 extern int zprop_get_list(libzfs_handle_t *, char *, zprop_list_t **,
392     zfs_type_t);
393 extern void zprop_free_list(zprop_list_t *);
394 
395 /*
396  * Functions for printing zfs or zpool properties
397  */
398 typedef struct zprop_get_cbdata {
399 	int cb_sources;
400 	int cb_columns[4];
401 	int cb_colwidths[5];
402 	boolean_t cb_scripted;
403 	boolean_t cb_literal;
404 	boolean_t cb_first;
405 	zprop_list_t *cb_proplist;
406 	zfs_type_t cb_type;
407 } zprop_get_cbdata_t;
408 
409 void zprop_print_one_property(const char *, zprop_get_cbdata_t *,
410     const char *, const char *, zprop_source_t, const char *);
411 
412 #define	GET_COL_NAME		1
413 #define	GET_COL_PROPERTY	2
414 #define	GET_COL_VALUE		3
415 #define	GET_COL_SOURCE		4
416 
417 /*
418  * Iterator functions.
419  */
420 typedef int (*zfs_iter_f)(zfs_handle_t *, void *);
421 extern int zfs_iter_root(libzfs_handle_t *, zfs_iter_f, void *);
422 extern int zfs_iter_children(zfs_handle_t *, zfs_iter_f, void *);
423 extern int zfs_iter_dependents(zfs_handle_t *, boolean_t, zfs_iter_f, void *);
424 extern int zfs_iter_filesystems(zfs_handle_t *, zfs_iter_f, void *);
425 extern int zfs_iter_snapshots(zfs_handle_t *, zfs_iter_f, void *);
426 
427 /*
428  * Functions to create and destroy datasets.
429  */
430 extern int zfs_create(libzfs_handle_t *, const char *, zfs_type_t,
431     nvlist_t *);
432 extern int zfs_create_ancestors(libzfs_handle_t *, const char *);
433 extern int zfs_destroy(zfs_handle_t *);
434 extern int zfs_destroy_snaps(zfs_handle_t *, char *);
435 extern int zfs_clone(zfs_handle_t *, const char *, nvlist_t *);
436 extern int zfs_snapshot(libzfs_handle_t *, const char *, boolean_t, nvlist_t *);
437 extern int zfs_rollback(zfs_handle_t *, zfs_handle_t *, boolean_t);
438 extern int zfs_rename(zfs_handle_t *, const char *, boolean_t);
439 extern int zfs_send(zfs_handle_t *, const char *, const char *,
440     boolean_t, boolean_t, boolean_t, boolean_t, int);
441 extern int zfs_promote(zfs_handle_t *);
442 
443 typedef struct recvflags {
444 	/* print informational messages (ie, -v was specified) */
445 	int verbose : 1;
446 
447 	/* the destination is a prefix, not the exact fs (ie, -d) */
448 	int isprefix : 1;
449 
450 	/* do not actually do the recv, just check if it would work (ie, -n) */
451 	int dryrun : 1;
452 
453 	/* rollback/destroy filesystems as necessary (eg, -F) */
454 	int force : 1;
455 
456 	/* set "canmount=off" on all modified filesystems */
457 	int canmountoff : 1;
458 
459 	/* byteswap flag is used internally; callers need not specify */
460 	int byteswap : 1;
461 } recvflags_t;
462 
463 extern int zfs_receive(libzfs_handle_t *, const char *, recvflags_t,
464     int, avl_tree_t *);
465 
466 /*
467  * Miscellaneous functions.
468  */
469 extern const char *zfs_type_to_name(zfs_type_t);
470 extern void zfs_refresh_properties(zfs_handle_t *);
471 extern int zfs_name_valid(const char *, zfs_type_t);
472 extern zfs_handle_t *zfs_path_to_zhandle(libzfs_handle_t *, char *, zfs_type_t);
473 extern boolean_t zfs_dataset_exists(libzfs_handle_t *, const char *,
474     zfs_type_t);
475 extern int zfs_spa_version(zfs_handle_t *, int *);
476 
477 /*
478  * dataset permission functions.
479  */
480 extern int zfs_perm_set(zfs_handle_t *, nvlist_t *);
481 extern int zfs_perm_remove(zfs_handle_t *, nvlist_t *);
482 extern int zfs_build_perms(zfs_handle_t *, char *, char *,
483     zfs_deleg_who_type_t, zfs_deleg_inherit_t, nvlist_t **nvlist_t);
484 extern int zfs_perm_get(zfs_handle_t *, zfs_allow_t **);
485 extern void zfs_free_allows(zfs_allow_t *);
486 extern void zfs_deleg_permissions(void);
487 
488 /*
489  * Mount support functions.
490  */
491 extern boolean_t is_mounted(libzfs_handle_t *, const char *special, char **);
492 extern boolean_t zfs_is_mounted(zfs_handle_t *, char **);
493 extern int zfs_mount(zfs_handle_t *, const char *, int);
494 extern int zfs_unmount(zfs_handle_t *, const char *, int);
495 extern int zfs_unmountall(zfs_handle_t *, int);
496 
497 /*
498  * Share support functions.
499  */
500 extern boolean_t zfs_is_shared(zfs_handle_t *);
501 extern int zfs_share(zfs_handle_t *);
502 extern int zfs_unshare(zfs_handle_t *);
503 
504 /*
505  * Protocol-specific share support functions.
506  */
507 extern boolean_t zfs_is_shared_nfs(zfs_handle_t *, char **);
508 extern boolean_t zfs_is_shared_smb(zfs_handle_t *, char **);
509 extern int zfs_share_nfs(zfs_handle_t *);
510 extern int zfs_share_smb(zfs_handle_t *);
511 extern int zfs_shareall(zfs_handle_t *);
512 extern int zfs_unshare_nfs(zfs_handle_t *, const char *);
513 extern int zfs_unshare_smb(zfs_handle_t *, const char *);
514 extern int zfs_unshareall_nfs(zfs_handle_t *);
515 extern int zfs_unshareall_smb(zfs_handle_t *);
516 extern int zfs_unshareall_bypath(zfs_handle_t *, const char *);
517 extern int zfs_unshareall(zfs_handle_t *);
518 extern boolean_t zfs_is_shared_iscsi(zfs_handle_t *);
519 extern int zfs_share_iscsi(zfs_handle_t *);
520 extern int zfs_unshare_iscsi(zfs_handle_t *);
521 extern int zfs_iscsi_perm_check(libzfs_handle_t *, char *, ucred_t *);
522 extern int zfs_deleg_share_nfs(libzfs_handle_t *, char *, char *,
523     void *, void *, int, zfs_share_op_t);
524 
525 /*
526  * When dealing with nvlists, verify() is extremely useful
527  */
528 #ifdef NDEBUG
529 #define	verify(EX)	((void)(EX))
530 #else
531 #define	verify(EX)	assert(EX)
532 #endif
533 
534 /*
535  * Utility function to convert a number to a human-readable form.
536  */
537 extern void zfs_nicenum(uint64_t, char *, size_t);
538 extern int zfs_nicestrtonum(libzfs_handle_t *, const char *, uint64_t *);
539 
540 /*
541  * Given a device or file, determine if it is part of a pool.
542  */
543 extern int zpool_in_use(libzfs_handle_t *, int, pool_state_t *, char **,
544     boolean_t *);
545 
546 /*
547  * ftyp special.  Read the label from a given device.
548  */
549 extern int zpool_read_label(int, nvlist_t **);
550 
551 /*
552  * Create and remove zvol /dev links.
553  */
554 extern int zpool_create_zvol_links(zpool_handle_t *);
555 extern int zpool_remove_zvol_links(zpool_handle_t *);
556 
557 /* is this zvol valid for use as a dump device? */
558 extern int zvol_check_dump_config(char *);
559 
560 /*
561  * Enable and disable datasets within a pool by mounting/unmounting and
562  * sharing/unsharing them.
563  */
564 extern int zpool_enable_datasets(zpool_handle_t *, const char *, int);
565 extern int zpool_disable_datasets(zpool_handle_t *, boolean_t);
566 
567 #ifdef	__cplusplus
568 }
569 #endif
570 
571 #endif	/* _LIBZFS_H */
572