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3740 Poor ZFS send / receive performance due to snapshot hold / release processing
Submitted by: Steven Hartland <steven.hartland@multiplay.co.uk>
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--- old/usr/src/lib/libzfs/common/libzfs.h
+++ new/usr/src/lib/libzfs/common/libzfs.h
1 1 /*
2 2 * CDDL HEADER START
3 3 *
4 4 * The contents of this file are subject to the terms of the
5 5 * Common Development and Distribution License (the "License").
6 6 * You may not use this file except in compliance with the License.
7 7 *
8 8 * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE
9 9 * or http://www.opensolaris.org/os/licensing.
10 10 * See the License for the specific language governing permissions
11 11 * and limitations under the License.
12 12 *
13 13 * When distributing Covered Code, include this CDDL HEADER in each
14 14 * file and include the License file at usr/src/OPENSOLARIS.LICENSE.
15 15 * If applicable, add the following below this CDDL HEADER, with the
16 16 * fields enclosed by brackets "[]" replaced with your own identifying
17 17 * information: Portions Copyright [yyyy] [name of copyright owner]
18 18 *
19 19 * CDDL HEADER END
20 20 */
21 21
22 22 /*
23 23 * Copyright (c) 2005, 2010, Oracle and/or its affiliates. All rights reserved.
24 24 * Copyright 2011 Nexenta Systems, Inc. All rights reserved.
25 25 * Copyright (c) 2012 by Delphix. All rights reserved.
26 26 * Copyright (c) 2012, Joyent, Inc. All rights reserved.
27 27 */
28 28
29 29 #ifndef _LIBZFS_H
30 30 #define _LIBZFS_H
31 31
32 32 #include <assert.h>
33 33 #include <libnvpair.h>
34 34 #include <sys/mnttab.h>
35 35 #include <sys/param.h>
36 36 #include <sys/types.h>
37 37 #include <sys/varargs.h>
38 38 #include <sys/fs/zfs.h>
39 39 #include <sys/avl.h>
40 40 #include <ucred.h>
41 41
42 42 #ifdef __cplusplus
43 43 extern "C" {
44 44 #endif
45 45
46 46 /*
47 47 * Miscellaneous ZFS constants
48 48 */
49 49 #define ZFS_MAXNAMELEN MAXNAMELEN
50 50 #define ZPOOL_MAXNAMELEN MAXNAMELEN
51 51 #define ZFS_MAXPROPLEN MAXPATHLEN
52 52 #define ZPOOL_MAXPROPLEN MAXPATHLEN
53 53
54 54 /*
55 55 * libzfs errors
56 56 */
57 57 typedef enum zfs_error {
58 58 EZFS_SUCCESS = 0, /* no error -- success */
59 59 EZFS_NOMEM = 2000, /* out of memory */
60 60 EZFS_BADPROP, /* invalid property value */
61 61 EZFS_PROPREADONLY, /* cannot set readonly property */
62 62 EZFS_PROPTYPE, /* property does not apply to dataset type */
63 63 EZFS_PROPNONINHERIT, /* property is not inheritable */
64 64 EZFS_PROPSPACE, /* bad quota or reservation */
65 65 EZFS_BADTYPE, /* dataset is not of appropriate type */
66 66 EZFS_BUSY, /* pool or dataset is busy */
67 67 EZFS_EXISTS, /* pool or dataset already exists */
68 68 EZFS_NOENT, /* no such pool or dataset */
69 69 EZFS_BADSTREAM, /* bad backup stream */
70 70 EZFS_DSREADONLY, /* dataset is readonly */
71 71 EZFS_VOLTOOBIG, /* volume is too large for 32-bit system */
72 72 EZFS_INVALIDNAME, /* invalid dataset name */
73 73 EZFS_BADRESTORE, /* unable to restore to destination */
74 74 EZFS_BADBACKUP, /* backup failed */
75 75 EZFS_BADTARGET, /* bad attach/detach/replace target */
76 76 EZFS_NODEVICE, /* no such device in pool */
77 77 EZFS_BADDEV, /* invalid device to add */
78 78 EZFS_NOREPLICAS, /* no valid replicas */
79 79 EZFS_RESILVERING, /* currently resilvering */
80 80 EZFS_BADVERSION, /* unsupported version */
81 81 EZFS_POOLUNAVAIL, /* pool is currently unavailable */
82 82 EZFS_DEVOVERFLOW, /* too many devices in one vdev */
83 83 EZFS_BADPATH, /* must be an absolute path */
84 84 EZFS_CROSSTARGET, /* rename or clone across pool or dataset */
85 85 EZFS_ZONED, /* used improperly in local zone */
86 86 EZFS_MOUNTFAILED, /* failed to mount dataset */
87 87 EZFS_UMOUNTFAILED, /* failed to unmount dataset */
88 88 EZFS_UNSHARENFSFAILED, /* unshare(1M) failed */
89 89 EZFS_SHARENFSFAILED, /* share(1M) failed */
90 90 EZFS_PERM, /* permission denied */
91 91 EZFS_NOSPC, /* out of space */
92 92 EZFS_FAULT, /* bad address */
93 93 EZFS_IO, /* I/O error */
94 94 EZFS_INTR, /* signal received */
95 95 EZFS_ISSPARE, /* device is a hot spare */
96 96 EZFS_INVALCONFIG, /* invalid vdev configuration */
97 97 EZFS_RECURSIVE, /* recursive dependency */
98 98 EZFS_NOHISTORY, /* no history object */
99 99 EZFS_POOLPROPS, /* couldn't retrieve pool props */
100 100 EZFS_POOL_NOTSUP, /* ops not supported for this type of pool */
101 101 EZFS_POOL_INVALARG, /* invalid argument for this pool operation */
102 102 EZFS_NAMETOOLONG, /* dataset name is too long */
103 103 EZFS_OPENFAILED, /* open of device failed */
104 104 EZFS_NOCAP, /* couldn't get capacity */
105 105 EZFS_LABELFAILED, /* write of label failed */
106 106 EZFS_BADWHO, /* invalid permission who */
107 107 EZFS_BADPERM, /* invalid permission */
108 108 EZFS_BADPERMSET, /* invalid permission set name */
109 109 EZFS_NODELEGATION, /* delegated administration is disabled */
110 110 EZFS_UNSHARESMBFAILED, /* failed to unshare over smb */
111 111 EZFS_SHARESMBFAILED, /* failed to share over smb */
112 112 EZFS_BADCACHE, /* bad cache file */
113 113 EZFS_ISL2CACHE, /* device is for the level 2 ARC */
114 114 EZFS_VDEVNOTSUP, /* unsupported vdev type */
115 115 EZFS_NOTSUP, /* ops not supported on this dataset */
116 116 EZFS_ACTIVE_SPARE, /* pool has active shared spare devices */
117 117 EZFS_UNPLAYED_LOGS, /* log device has unplayed logs */
118 118 EZFS_REFTAG_RELE, /* snapshot release: tag not found */
119 119 EZFS_REFTAG_HOLD, /* snapshot hold: tag already exists */
120 120 EZFS_TAGTOOLONG, /* snapshot hold/rele: tag too long */
121 121 EZFS_PIPEFAILED, /* pipe create failed */
122 122 EZFS_THREADCREATEFAILED, /* thread create failed */
123 123 EZFS_POSTSPLIT_ONLINE, /* onlining a disk after splitting it */
124 124 EZFS_SCRUBBING, /* currently scrubbing */
125 125 EZFS_NO_SCRUB, /* no active scrub */
126 126 EZFS_DIFF, /* general failure of zfs diff */
127 127 EZFS_DIFFDATA, /* bad zfs diff data */
128 128 EZFS_POOLREADONLY, /* pool is in read-only mode */
129 129 EZFS_UNKNOWN
130 130 } zfs_error_t;
131 131
132 132 /*
133 133 * The following data structures are all part
134 134 * of the zfs_allow_t data structure which is
135 135 * used for printing 'allow' permissions.
136 136 * It is a linked list of zfs_allow_t's which
137 137 * then contain avl tree's for user/group/sets/...
138 138 * and each one of the entries in those trees have
139 139 * avl tree's for the permissions they belong to and
140 140 * whether they are local,descendent or local+descendent
141 141 * permissions. The AVL trees are used primarily for
142 142 * sorting purposes, but also so that we can quickly find
143 143 * a given user and or permission.
144 144 */
145 145 typedef struct zfs_perm_node {
146 146 avl_node_t z_node;
147 147 char z_pname[MAXPATHLEN];
148 148 } zfs_perm_node_t;
149 149
150 150 typedef struct zfs_allow_node {
151 151 avl_node_t z_node;
152 152 char z_key[MAXPATHLEN]; /* name, such as joe */
153 153 avl_tree_t z_localdescend; /* local+descendent perms */
154 154 avl_tree_t z_local; /* local permissions */
155 155 avl_tree_t z_descend; /* descendent permissions */
156 156 } zfs_allow_node_t;
157 157
158 158 typedef struct zfs_allow {
159 159 struct zfs_allow *z_next;
160 160 char z_setpoint[MAXPATHLEN];
161 161 avl_tree_t z_sets;
162 162 avl_tree_t z_crperms;
163 163 avl_tree_t z_user;
164 164 avl_tree_t z_group;
165 165 avl_tree_t z_everyone;
166 166 } zfs_allow_t;
167 167
168 168 /*
169 169 * Basic handle types
170 170 */
171 171 typedef struct zfs_handle zfs_handle_t;
172 172 typedef struct zpool_handle zpool_handle_t;
173 173 typedef struct libzfs_handle libzfs_handle_t;
174 174
175 175 /*
176 176 * Library initialization
177 177 */
178 178 extern libzfs_handle_t *libzfs_init(void);
179 179 extern void libzfs_fini(libzfs_handle_t *);
180 180
181 181 extern libzfs_handle_t *zpool_get_handle(zpool_handle_t *);
182 182 extern libzfs_handle_t *zfs_get_handle(zfs_handle_t *);
183 183
184 184 extern void libzfs_print_on_error(libzfs_handle_t *, boolean_t);
185 185
186 186 extern void zfs_save_arguments(int argc, char **, char *, int);
187 187 extern int zpool_log_history(libzfs_handle_t *, const char *);
188 188
189 189 extern int libzfs_errno(libzfs_handle_t *);
190 190 extern const char *libzfs_error_action(libzfs_handle_t *);
191 191 extern const char *libzfs_error_description(libzfs_handle_t *);
192 192 extern void libzfs_mnttab_init(libzfs_handle_t *);
193 193 extern void libzfs_mnttab_fini(libzfs_handle_t *);
194 194 extern void libzfs_mnttab_cache(libzfs_handle_t *, boolean_t);
195 195 extern int libzfs_mnttab_find(libzfs_handle_t *, const char *,
196 196 struct mnttab *);
197 197 extern void libzfs_mnttab_add(libzfs_handle_t *, const char *,
198 198 const char *, const char *);
199 199 extern void libzfs_mnttab_remove(libzfs_handle_t *, const char *);
200 200
201 201 /*
202 202 * Basic handle functions
203 203 */
204 204 extern zpool_handle_t *zpool_open(libzfs_handle_t *, const char *);
205 205 extern zpool_handle_t *zpool_open_canfail(libzfs_handle_t *, const char *);
206 206 extern void zpool_close(zpool_handle_t *);
207 207 extern const char *zpool_get_name(zpool_handle_t *);
208 208 extern int zpool_get_state(zpool_handle_t *);
209 209 extern char *zpool_state_to_name(vdev_state_t, vdev_aux_t);
210 210 extern void zpool_free_handles(libzfs_handle_t *);
211 211
212 212 /*
213 213 * Iterate over all active pools in the system.
214 214 */
215 215 typedef int (*zpool_iter_f)(zpool_handle_t *, void *);
216 216 extern int zpool_iter(libzfs_handle_t *, zpool_iter_f, void *);
217 217
218 218 /*
219 219 * Functions to create and destroy pools
220 220 */
221 221 extern int zpool_create(libzfs_handle_t *, const char *, nvlist_t *,
222 222 nvlist_t *, nvlist_t *);
223 223 extern int zpool_destroy(zpool_handle_t *, const char *);
224 224 extern int zpool_add(zpool_handle_t *, nvlist_t *);
225 225
226 226 typedef struct splitflags {
227 227 /* do not split, but return the config that would be split off */
228 228 int dryrun : 1;
229 229
230 230 /* after splitting, import the pool */
231 231 int import : 1;
232 232 } splitflags_t;
233 233
234 234 /*
235 235 * Functions to manipulate pool and vdev state
236 236 */
237 237 extern int zpool_scan(zpool_handle_t *, pool_scan_func_t);
238 238 extern int zpool_clear(zpool_handle_t *, const char *, nvlist_t *);
239 239 extern int zpool_reguid(zpool_handle_t *);
240 240 extern int zpool_reopen(zpool_handle_t *);
241 241
242 242 extern int zpool_vdev_online(zpool_handle_t *, const char *, int,
243 243 vdev_state_t *);
244 244 extern int zpool_vdev_offline(zpool_handle_t *, const char *, boolean_t);
245 245 extern int zpool_vdev_attach(zpool_handle_t *, const char *,
246 246 const char *, nvlist_t *, int);
247 247 extern int zpool_vdev_detach(zpool_handle_t *, const char *);
248 248 extern int zpool_vdev_remove(zpool_handle_t *, const char *);
249 249 extern int zpool_vdev_split(zpool_handle_t *, char *, nvlist_t **, nvlist_t *,
250 250 splitflags_t);
251 251
252 252 extern int zpool_vdev_fault(zpool_handle_t *, uint64_t, vdev_aux_t);
253 253 extern int zpool_vdev_degrade(zpool_handle_t *, uint64_t, vdev_aux_t);
254 254 extern int zpool_vdev_clear(zpool_handle_t *, uint64_t);
255 255
256 256 extern nvlist_t *zpool_find_vdev(zpool_handle_t *, const char *, boolean_t *,
257 257 boolean_t *, boolean_t *);
258 258 extern nvlist_t *zpool_find_vdev_by_physpath(zpool_handle_t *, const char *,
259 259 boolean_t *, boolean_t *, boolean_t *);
260 260 extern int zpool_label_disk(libzfs_handle_t *, zpool_handle_t *, char *);
261 261
262 262 /*
263 263 * Functions to manage pool properties
264 264 */
265 265 extern int zpool_set_prop(zpool_handle_t *, const char *, const char *);
266 266 extern int zpool_get_prop(zpool_handle_t *, zpool_prop_t, char *,
267 267 size_t proplen, zprop_source_t *);
268 268 extern uint64_t zpool_get_prop_int(zpool_handle_t *, zpool_prop_t,
269 269 zprop_source_t *);
270 270
271 271 extern const char *zpool_prop_to_name(zpool_prop_t);
272 272 extern const char *zpool_prop_values(zpool_prop_t);
273 273
274 274 /*
275 275 * Pool health statistics.
276 276 */
277 277 typedef enum {
278 278 /*
279 279 * The following correspond to faults as defined in the (fault.fs.zfs.*)
280 280 * event namespace. Each is associated with a corresponding message ID.
281 281 */
282 282 ZPOOL_STATUS_CORRUPT_CACHE, /* corrupt /kernel/drv/zpool.cache */
283 283 ZPOOL_STATUS_MISSING_DEV_R, /* missing device with replicas */
284 284 ZPOOL_STATUS_MISSING_DEV_NR, /* missing device with no replicas */
285 285 ZPOOL_STATUS_CORRUPT_LABEL_R, /* bad device label with replicas */
286 286 ZPOOL_STATUS_CORRUPT_LABEL_NR, /* bad device label with no replicas */
287 287 ZPOOL_STATUS_BAD_GUID_SUM, /* sum of device guids didn't match */
288 288 ZPOOL_STATUS_CORRUPT_POOL, /* pool metadata is corrupted */
289 289 ZPOOL_STATUS_CORRUPT_DATA, /* data errors in user (meta)data */
290 290 ZPOOL_STATUS_FAILING_DEV, /* device experiencing errors */
291 291 ZPOOL_STATUS_VERSION_NEWER, /* newer on-disk version */
292 292 ZPOOL_STATUS_HOSTID_MISMATCH, /* last accessed by another system */
293 293 ZPOOL_STATUS_IO_FAILURE_WAIT, /* failed I/O, failmode 'wait' */
294 294 ZPOOL_STATUS_IO_FAILURE_CONTINUE, /* failed I/O, failmode 'continue' */
295 295 ZPOOL_STATUS_BAD_LOG, /* cannot read log chain(s) */
296 296
297 297 /*
298 298 * If the pool has unsupported features but can still be opened in
299 299 * read-only mode, its status is ZPOOL_STATUS_UNSUP_FEAT_WRITE. If the
300 300 * pool has unsupported features but cannot be opened at all, its
301 301 * status is ZPOOL_STATUS_UNSUP_FEAT_READ.
302 302 */
303 303 ZPOOL_STATUS_UNSUP_FEAT_READ, /* unsupported features for read */
304 304 ZPOOL_STATUS_UNSUP_FEAT_WRITE, /* unsupported features for write */
305 305
306 306 /*
307 307 * These faults have no corresponding message ID. At the time we are
308 308 * checking the status, the original reason for the FMA fault (I/O or
309 309 * checksum errors) has been lost.
310 310 */
311 311 ZPOOL_STATUS_FAULTED_DEV_R, /* faulted device with replicas */
312 312 ZPOOL_STATUS_FAULTED_DEV_NR, /* faulted device with no replicas */
313 313
314 314 /*
315 315 * The following are not faults per se, but still an error possibly
316 316 * requiring administrative attention. There is no corresponding
317 317 * message ID.
318 318 */
319 319 ZPOOL_STATUS_VERSION_OLDER, /* older legacy on-disk version */
320 320 ZPOOL_STATUS_FEAT_DISABLED, /* supported features are disabled */
321 321 ZPOOL_STATUS_RESILVERING, /* device being resilvered */
322 322 ZPOOL_STATUS_OFFLINE_DEV, /* device online */
323 323 ZPOOL_STATUS_REMOVED_DEV, /* removed device */
324 324
325 325 /*
326 326 * Finally, the following indicates a healthy pool.
327 327 */
328 328 ZPOOL_STATUS_OK
329 329 } zpool_status_t;
330 330
331 331 extern zpool_status_t zpool_get_status(zpool_handle_t *, char **);
332 332 extern zpool_status_t zpool_import_status(nvlist_t *, char **);
333 333 extern void zpool_dump_ddt(const ddt_stat_t *dds, const ddt_histogram_t *ddh);
334 334
335 335 /*
336 336 * Statistics and configuration functions.
337 337 */
338 338 extern nvlist_t *zpool_get_config(zpool_handle_t *, nvlist_t **);
339 339 extern nvlist_t *zpool_get_features(zpool_handle_t *);
340 340 extern int zpool_refresh_stats(zpool_handle_t *, boolean_t *);
341 341 extern int zpool_get_errlog(zpool_handle_t *, nvlist_t **);
342 342
343 343 /*
344 344 * Import and export functions
345 345 */
346 346 extern int zpool_export(zpool_handle_t *, boolean_t, const char *);
347 347 extern int zpool_export_force(zpool_handle_t *, const char *);
348 348 extern int zpool_import(libzfs_handle_t *, nvlist_t *, const char *,
349 349 char *altroot);
350 350 extern int zpool_import_props(libzfs_handle_t *, nvlist_t *, const char *,
351 351 nvlist_t *, int);
352 352 extern void zpool_print_unsup_feat(nvlist_t *config);
353 353
354 354 /*
355 355 * Search for pools to import
356 356 */
357 357
358 358 typedef struct importargs {
359 359 char **path; /* a list of paths to search */
360 360 int paths; /* number of paths to search */
361 361 char *poolname; /* name of a pool to find */
362 362 uint64_t guid; /* guid of a pool to find */
363 363 char *cachefile; /* cachefile to use for import */
364 364 int can_be_active : 1; /* can the pool be active? */
365 365 int unique : 1; /* does 'poolname' already exist? */
366 366 int exists : 1; /* set on return if pool already exists */
367 367 } importargs_t;
368 368
369 369 extern nvlist_t *zpool_search_import(libzfs_handle_t *, importargs_t *);
370 370
371 371 /* legacy pool search routines */
372 372 extern nvlist_t *zpool_find_import(libzfs_handle_t *, int, char **);
373 373 extern nvlist_t *zpool_find_import_cached(libzfs_handle_t *, const char *,
374 374 char *, uint64_t);
375 375
376 376 /*
377 377 * Miscellaneous pool functions
378 378 */
379 379 struct zfs_cmd;
380 380
381 381 extern const char *zfs_history_event_names[];
382 382
383 383 extern char *zpool_vdev_name(libzfs_handle_t *, zpool_handle_t *, nvlist_t *,
384 384 boolean_t verbose);
385 385 extern int zpool_upgrade(zpool_handle_t *, uint64_t);
386 386 extern int zpool_get_history(zpool_handle_t *, nvlist_t **);
387 387 extern int zpool_history_unpack(char *, uint64_t, uint64_t *,
388 388 nvlist_t ***, uint_t *);
389 389 extern void zpool_obj_to_path(zpool_handle_t *, uint64_t, uint64_t, char *,
390 390 size_t len);
391 391 extern int zfs_ioctl(libzfs_handle_t *, int, struct zfs_cmd *);
392 392 extern int zpool_get_physpath(zpool_handle_t *, char *, size_t);
393 393 extern void zpool_explain_recover(libzfs_handle_t *, const char *, int,
394 394 nvlist_t *);
395 395
396 396 /*
397 397 * Basic handle manipulations. These functions do not create or destroy the
398 398 * underlying datasets, only the references to them.
399 399 */
400 400 extern zfs_handle_t *zfs_open(libzfs_handle_t *, const char *, int);
401 401 extern zfs_handle_t *zfs_handle_dup(zfs_handle_t *);
402 402 extern void zfs_close(zfs_handle_t *);
403 403 extern zfs_type_t zfs_get_type(const zfs_handle_t *);
404 404 extern const char *zfs_get_name(const zfs_handle_t *);
405 405 extern zpool_handle_t *zfs_get_pool_handle(const zfs_handle_t *);
406 406
407 407 /*
408 408 * Property management functions. Some functions are shared with the kernel,
409 409 * and are found in sys/fs/zfs.h.
410 410 */
411 411
412 412 /*
413 413 * zfs dataset property management
414 414 */
415 415 extern const char *zfs_prop_default_string(zfs_prop_t);
416 416 extern uint64_t zfs_prop_default_numeric(zfs_prop_t);
417 417 extern const char *zfs_prop_column_name(zfs_prop_t);
418 418 extern boolean_t zfs_prop_align_right(zfs_prop_t);
419 419
420 420 extern nvlist_t *zfs_valid_proplist(libzfs_handle_t *, zfs_type_t,
421 421 nvlist_t *, uint64_t, zfs_handle_t *, const char *);
422 422
423 423 extern const char *zfs_prop_to_name(zfs_prop_t);
424 424 extern int zfs_prop_set(zfs_handle_t *, const char *, const char *);
425 425 extern int zfs_prop_get(zfs_handle_t *, zfs_prop_t, char *, size_t,
426 426 zprop_source_t *, char *, size_t, boolean_t);
427 427 extern int zfs_prop_get_recvd(zfs_handle_t *, const char *, char *, size_t,
428 428 boolean_t);
429 429 extern int zfs_prop_get_numeric(zfs_handle_t *, zfs_prop_t, uint64_t *,
430 430 zprop_source_t *, char *, size_t);
431 431 extern int zfs_prop_get_userquota_int(zfs_handle_t *zhp, const char *propname,
432 432 uint64_t *propvalue);
433 433 extern int zfs_prop_get_userquota(zfs_handle_t *zhp, const char *propname,
434 434 char *propbuf, int proplen, boolean_t literal);
435 435 extern int zfs_prop_get_written_int(zfs_handle_t *zhp, const char *propname,
436 436 uint64_t *propvalue);
437 437 extern int zfs_prop_get_written(zfs_handle_t *zhp, const char *propname,
438 438 char *propbuf, int proplen, boolean_t literal);
439 439 extern int zfs_prop_get_feature(zfs_handle_t *zhp, const char *propname,
440 440 char *buf, size_t len);
441 441 extern uint64_t zfs_prop_get_int(zfs_handle_t *, zfs_prop_t);
442 442 extern int zfs_prop_inherit(zfs_handle_t *, const char *, boolean_t);
443 443 extern const char *zfs_prop_values(zfs_prop_t);
444 444 extern int zfs_prop_is_string(zfs_prop_t prop);
445 445 extern nvlist_t *zfs_get_user_props(zfs_handle_t *);
446 446 extern nvlist_t *zfs_get_recvd_props(zfs_handle_t *);
447 447 extern nvlist_t *zfs_get_clones_nvl(zfs_handle_t *);
448 448
449 449
450 450 typedef struct zprop_list {
451 451 int pl_prop;
452 452 char *pl_user_prop;
453 453 struct zprop_list *pl_next;
454 454 boolean_t pl_all;
455 455 size_t pl_width;
456 456 size_t pl_recvd_width;
457 457 boolean_t pl_fixed;
458 458 } zprop_list_t;
459 459
460 460 extern int zfs_expand_proplist(zfs_handle_t *, zprop_list_t **, boolean_t);
461 461 extern void zfs_prune_proplist(zfs_handle_t *, uint8_t *);
462 462
463 463 #define ZFS_MOUNTPOINT_NONE "none"
464 464 #define ZFS_MOUNTPOINT_LEGACY "legacy"
465 465
466 466 #define ZFS_FEATURE_DISABLED "disabled"
467 467 #define ZFS_FEATURE_ENABLED "enabled"
468 468 #define ZFS_FEATURE_ACTIVE "active"
469 469
470 470 #define ZFS_UNSUPPORTED_INACTIVE "inactive"
471 471 #define ZFS_UNSUPPORTED_READONLY "readonly"
472 472
473 473 /*
474 474 * zpool property management
475 475 */
476 476 extern int zpool_expand_proplist(zpool_handle_t *, zprop_list_t **);
477 477 extern int zpool_prop_get_feature(zpool_handle_t *, const char *, char *,
478 478 size_t);
479 479 extern const char *zpool_prop_default_string(zpool_prop_t);
480 480 extern uint64_t zpool_prop_default_numeric(zpool_prop_t);
481 481 extern const char *zpool_prop_column_name(zpool_prop_t);
482 482 extern boolean_t zpool_prop_align_right(zpool_prop_t);
483 483
484 484 /*
485 485 * Functions shared by zfs and zpool property management.
486 486 */
487 487 extern int zprop_iter(zprop_func func, void *cb, boolean_t show_all,
488 488 boolean_t ordered, zfs_type_t type);
489 489 extern int zprop_get_list(libzfs_handle_t *, char *, zprop_list_t **,
490 490 zfs_type_t);
491 491 extern void zprop_free_list(zprop_list_t *);
492 492
493 493 #define ZFS_GET_NCOLS 5
494 494
495 495 typedef enum {
496 496 GET_COL_NONE,
497 497 GET_COL_NAME,
498 498 GET_COL_PROPERTY,
499 499 GET_COL_VALUE,
500 500 GET_COL_RECVD,
501 501 GET_COL_SOURCE
502 502 } zfs_get_column_t;
503 503
504 504 /*
505 505 * Functions for printing zfs or zpool properties
506 506 */
507 507 typedef struct zprop_get_cbdata {
508 508 int cb_sources;
509 509 zfs_get_column_t cb_columns[ZFS_GET_NCOLS];
510 510 int cb_colwidths[ZFS_GET_NCOLS + 1];
511 511 boolean_t cb_scripted;
512 512 boolean_t cb_literal;
513 513 boolean_t cb_first;
514 514 zprop_list_t *cb_proplist;
515 515 zfs_type_t cb_type;
516 516 } zprop_get_cbdata_t;
517 517
518 518 void zprop_print_one_property(const char *, zprop_get_cbdata_t *,
519 519 const char *, const char *, zprop_source_t, const char *,
520 520 const char *);
521 521
522 522 /*
523 523 * Iterator functions.
524 524 */
525 525 typedef int (*zfs_iter_f)(zfs_handle_t *, void *);
526 526 extern int zfs_iter_root(libzfs_handle_t *, zfs_iter_f, void *);
527 527 extern int zfs_iter_children(zfs_handle_t *, zfs_iter_f, void *);
528 528 extern int zfs_iter_dependents(zfs_handle_t *, boolean_t, zfs_iter_f, void *);
529 529 extern int zfs_iter_filesystems(zfs_handle_t *, zfs_iter_f, void *);
530 530 extern int zfs_iter_snapshots(zfs_handle_t *, zfs_iter_f, void *);
531 531 extern int zfs_iter_snapshots_sorted(zfs_handle_t *, zfs_iter_f, void *);
532 532 extern int zfs_iter_snapspec(zfs_handle_t *, const char *, zfs_iter_f, void *);
533 533
534 534 typedef struct get_all_cb {
535 535 zfs_handle_t **cb_handles;
536 536 size_t cb_alloc;
537 537 size_t cb_used;
538 538 boolean_t cb_verbose;
539 539 int (*cb_getone)(zfs_handle_t *, void *);
540 540 } get_all_cb_t;
541 541
542 542 void libzfs_add_handle(get_all_cb_t *, zfs_handle_t *);
543 543 int libzfs_dataset_cmp(const void *, const void *);
544 544
545 545 /*
546 546 * Functions to create and destroy datasets.
547 547 */
548 548 extern int zfs_create(libzfs_handle_t *, const char *, zfs_type_t,
549 549 nvlist_t *);
550 550 extern int zfs_create_ancestors(libzfs_handle_t *, const char *);
551 551 extern int zfs_destroy(zfs_handle_t *, boolean_t);
552 552 extern int zfs_destroy_snaps(zfs_handle_t *, char *, boolean_t);
553 553 extern int zfs_destroy_snaps_nvl(libzfs_handle_t *, nvlist_t *, boolean_t);
554 554 extern int zfs_clone(zfs_handle_t *, const char *, nvlist_t *);
555 555 extern int zfs_snapshot(libzfs_handle_t *, const char *, boolean_t, nvlist_t *);
556 556 extern int zfs_snapshot_nvl(libzfs_handle_t *hdl, nvlist_t *snaps,
557 557 nvlist_t *props);
558 558 extern int zfs_rollback(zfs_handle_t *, zfs_handle_t *, boolean_t);
559 559 extern int zfs_rename(zfs_handle_t *, const char *, boolean_t, boolean_t);
560 560
561 561 typedef struct sendflags {
562 562 /* print informational messages (ie, -v was specified) */
563 563 boolean_t verbose;
564 564
565 565 /* recursive send (ie, -R) */
566 566 boolean_t replicate;
567 567
568 568 /* for incrementals, do all intermediate snapshots */
569 569 boolean_t doall;
570 570
571 571 /* if dataset is a clone, do incremental from its origin */
572 572 boolean_t fromorigin;
573 573
574 574 /* do deduplication */
575 575 boolean_t dedup;
576 576
577 577 /* send properties (ie, -p) */
578 578 boolean_t props;
579 579
580 580 /* do not send (no-op, ie. -n) */
581 581 boolean_t dryrun;
582 582
583 583 /* parsable verbose output (ie. -P) */
584 584 boolean_t parsable;
585 585
586 586 /* show progress (ie. -v) */
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587 587 boolean_t progress;
588 588 } sendflags_t;
589 589
590 590 typedef boolean_t (snapfilter_cb_t)(zfs_handle_t *, void *);
591 591
592 592 extern int zfs_send(zfs_handle_t *, const char *, const char *,
593 593 sendflags_t *, int, snapfilter_cb_t, void *, nvlist_t **);
594 594
595 595 extern int zfs_promote(zfs_handle_t *);
596 596 extern int zfs_hold(zfs_handle_t *, const char *, const char *,
597 - boolean_t, boolean_t, int);
597 + boolean_t, int);
598 +extern int zfs_hold_nvl(zfs_handle_t *, int, nvlist_t *);
598 599 extern int zfs_release(zfs_handle_t *, const char *, const char *, boolean_t);
599 600 extern int zfs_get_holds(zfs_handle_t *, nvlist_t **);
600 601 extern uint64_t zvol_volsize_to_reservation(uint64_t, nvlist_t *);
601 602
602 603 typedef int (*zfs_userspace_cb_t)(void *arg, const char *domain,
603 604 uid_t rid, uint64_t space);
604 605
605 606 extern int zfs_userspace(zfs_handle_t *, zfs_userquota_prop_t,
606 607 zfs_userspace_cb_t, void *);
607 608
608 609 extern int zfs_get_fsacl(zfs_handle_t *, nvlist_t **);
609 610 extern int zfs_set_fsacl(zfs_handle_t *, boolean_t, nvlist_t *);
610 611
611 612 typedef struct recvflags {
612 613 /* print informational messages (ie, -v was specified) */
613 614 boolean_t verbose;
614 615
615 616 /* the destination is a prefix, not the exact fs (ie, -d) */
616 617 boolean_t isprefix;
617 618
618 619 /*
619 620 * Only the tail of the sent snapshot path is appended to the
620 621 * destination to determine the received snapshot name (ie, -e).
621 622 */
622 623 boolean_t istail;
623 624
624 625 /* do not actually do the recv, just check if it would work (ie, -n) */
625 626 boolean_t dryrun;
626 627
627 628 /* rollback/destroy filesystems as necessary (eg, -F) */
628 629 boolean_t force;
629 630
630 631 /* set "canmount=off" on all modified filesystems */
631 632 boolean_t canmountoff;
632 633
633 634 /* byteswap flag is used internally; callers need not specify */
634 635 boolean_t byteswap;
635 636
636 637 /* do not mount file systems as they are extracted (private) */
637 638 boolean_t nomount;
638 639 } recvflags_t;
639 640
640 641 extern int zfs_receive(libzfs_handle_t *, const char *, recvflags_t *,
641 642 int, avl_tree_t *);
642 643
643 644 typedef enum diff_flags {
644 645 ZFS_DIFF_PARSEABLE = 0x1,
645 646 ZFS_DIFF_TIMESTAMP = 0x2,
646 647 ZFS_DIFF_CLASSIFY = 0x4
647 648 } diff_flags_t;
648 649
649 650 extern int zfs_show_diffs(zfs_handle_t *, int, const char *, const char *,
650 651 int);
651 652
652 653 /*
653 654 * Miscellaneous functions.
654 655 */
655 656 extern const char *zfs_type_to_name(zfs_type_t);
656 657 extern void zfs_refresh_properties(zfs_handle_t *);
657 658 extern int zfs_name_valid(const char *, zfs_type_t);
658 659 extern zfs_handle_t *zfs_path_to_zhandle(libzfs_handle_t *, char *, zfs_type_t);
659 660 extern boolean_t zfs_dataset_exists(libzfs_handle_t *, const char *,
660 661 zfs_type_t);
661 662 extern int zfs_spa_version(zfs_handle_t *, int *);
662 663
663 664 /*
664 665 * Mount support functions.
665 666 */
666 667 extern boolean_t is_mounted(libzfs_handle_t *, const char *special, char **);
667 668 extern boolean_t zfs_is_mounted(zfs_handle_t *, char **);
668 669 extern int zfs_mount(zfs_handle_t *, const char *, int);
669 670 extern int zfs_unmount(zfs_handle_t *, const char *, int);
670 671 extern int zfs_unmountall(zfs_handle_t *, int);
671 672
672 673 /*
673 674 * Share support functions.
674 675 */
675 676 extern boolean_t zfs_is_shared(zfs_handle_t *);
676 677 extern int zfs_share(zfs_handle_t *);
677 678 extern int zfs_unshare(zfs_handle_t *);
678 679
679 680 /*
680 681 * Protocol-specific share support functions.
681 682 */
682 683 extern boolean_t zfs_is_shared_nfs(zfs_handle_t *, char **);
683 684 extern boolean_t zfs_is_shared_smb(zfs_handle_t *, char **);
684 685 extern int zfs_share_nfs(zfs_handle_t *);
685 686 extern int zfs_share_smb(zfs_handle_t *);
686 687 extern int zfs_shareall(zfs_handle_t *);
687 688 extern int zfs_unshare_nfs(zfs_handle_t *, const char *);
688 689 extern int zfs_unshare_smb(zfs_handle_t *, const char *);
689 690 extern int zfs_unshareall_nfs(zfs_handle_t *);
690 691 extern int zfs_unshareall_smb(zfs_handle_t *);
691 692 extern int zfs_unshareall_bypath(zfs_handle_t *, const char *);
692 693 extern int zfs_unshareall(zfs_handle_t *);
693 694 extern int zfs_deleg_share_nfs(libzfs_handle_t *, char *, char *, char *,
694 695 void *, void *, int, zfs_share_op_t);
695 696
696 697 /*
697 698 * When dealing with nvlists, verify() is extremely useful
698 699 */
699 700 #ifdef NDEBUG
700 701 #define verify(EX) ((void)(EX))
701 702 #else
702 703 #define verify(EX) assert(EX)
703 704 #endif
704 705
705 706 /*
706 707 * Utility function to convert a number to a human-readable form.
707 708 */
708 709 extern void zfs_nicenum(uint64_t, char *, size_t);
709 710 extern int zfs_nicestrtonum(libzfs_handle_t *, const char *, uint64_t *);
710 711
711 712 /*
712 713 * Given a device or file, determine if it is part of a pool.
713 714 */
714 715 extern int zpool_in_use(libzfs_handle_t *, int, pool_state_t *, char **,
715 716 boolean_t *);
716 717
717 718 /*
718 719 * Label manipulation.
719 720 */
720 721 extern int zpool_read_label(int, nvlist_t **);
721 722 extern int zpool_clear_label(int);
722 723
723 724 /* is this zvol valid for use as a dump device? */
724 725 extern int zvol_check_dump_config(char *);
725 726
726 727 /*
727 728 * Management interfaces for SMB ACL files
728 729 */
729 730
730 731 int zfs_smb_acl_add(libzfs_handle_t *, char *, char *, char *);
731 732 int zfs_smb_acl_remove(libzfs_handle_t *, char *, char *, char *);
732 733 int zfs_smb_acl_purge(libzfs_handle_t *, char *, char *);
733 734 int zfs_smb_acl_rename(libzfs_handle_t *, char *, char *, char *, char *);
734 735
735 736 /*
736 737 * Enable and disable datasets within a pool by mounting/unmounting and
737 738 * sharing/unsharing them.
738 739 */
739 740 extern int zpool_enable_datasets(zpool_handle_t *, const char *, int);
740 741 extern int zpool_disable_datasets(zpool_handle_t *, boolean_t);
741 742
742 743 /*
743 744 * Mappings between vdev and FRU.
744 745 */
745 746 extern void libzfs_fru_refresh(libzfs_handle_t *);
746 747 extern const char *libzfs_fru_lookup(libzfs_handle_t *, const char *);
747 748 extern const char *libzfs_fru_devpath(libzfs_handle_t *, const char *);
748 749 extern boolean_t libzfs_fru_compare(libzfs_handle_t *, const char *,
749 750 const char *);
750 751 extern boolean_t libzfs_fru_notself(libzfs_handle_t *, const char *);
751 752 extern int zpool_fru_set(zpool_handle_t *, uint64_t, const char *);
752 753
753 754 #ifdef __cplusplus
754 755 }
755 756 #endif
756 757
757 758 #endif /* _LIBZFS_H */
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