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34dc7c2f BB |
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 | /* | |
428870ff | 22 | * Copyright (c) 2005, 2010, Oracle and/or its affiliates. All rights reserved. |
34dc7c2f BB |
23 | */ |
24 | ||
428870ff | 25 | #include <sys/zfs_context.h> |
34dc7c2f BB |
26 | #include <sys/dmu.h> |
27 | #include <sys/dmu_objset.h> | |
28 | #include <sys/dmu_tx.h> | |
29 | #include <sys/dsl_dataset.h> | |
30 | #include <sys/dsl_dir.h> | |
31 | #include <sys/dsl_prop.h> | |
32 | #include <sys/dsl_synctask.h> | |
33 | #include <sys/spa.h> | |
34dc7c2f BB |
34 | #include <sys/zap.h> |
35 | #include <sys/fs/zfs.h> | |
36 | ||
37 | #include "zfs_prop.h" | |
38 | ||
428870ff BB |
39 | #define ZPROP_INHERIT_SUFFIX "$inherit" |
40 | #define ZPROP_RECVD_SUFFIX "$recvd" | |
41 | ||
34dc7c2f | 42 | static int |
428870ff | 43 | dodefault(const char *propname, int intsz, int numints, void *buf) |
34dc7c2f BB |
44 | { |
45 | zfs_prop_t prop; | |
46 | ||
47 | /* | |
48 | * The setonce properties are read-only, BUT they still | |
49 | * have a default value that can be used as the initial | |
50 | * value. | |
51 | */ | |
52 | if ((prop = zfs_name_to_prop(propname)) == ZPROP_INVAL || | |
53 | (zfs_prop_readonly(prop) && !zfs_prop_setonce(prop))) | |
54 | return (ENOENT); | |
55 | ||
56 | if (zfs_prop_get_type(prop) == PROP_TYPE_STRING) { | |
57 | if (intsz != 1) | |
58 | return (EOVERFLOW); | |
59 | (void) strncpy(buf, zfs_prop_default_string(prop), | |
428870ff | 60 | numints); |
34dc7c2f | 61 | } else { |
428870ff | 62 | if (intsz != 8 || numints < 1) |
34dc7c2f BB |
63 | return (EOVERFLOW); |
64 | ||
65 | *(uint64_t *)buf = zfs_prop_default_numeric(prop); | |
66 | } | |
67 | ||
68 | return (0); | |
69 | } | |
70 | ||
b128c09f BB |
71 | int |
72 | dsl_prop_get_dd(dsl_dir_t *dd, const char *propname, | |
428870ff | 73 | int intsz, int numints, void *buf, char *setpoint, boolean_t snapshot) |
34dc7c2f BB |
74 | { |
75 | int err = ENOENT; | |
428870ff | 76 | dsl_dir_t *target = dd; |
b128c09f | 77 | objset_t *mos = dd->dd_pool->dp_meta_objset; |
34dc7c2f | 78 | zfs_prop_t prop; |
428870ff BB |
79 | boolean_t inheritable; |
80 | boolean_t inheriting = B_FALSE; | |
81 | char *inheritstr; | |
82 | char *recvdstr; | |
34dc7c2f | 83 | |
b128c09f BB |
84 | ASSERT(RW_LOCK_HELD(&dd->dd_pool->dp_config_rwlock)); |
85 | ||
34dc7c2f BB |
86 | if (setpoint) |
87 | setpoint[0] = '\0'; | |
88 | ||
89 | prop = zfs_name_to_prop(propname); | |
428870ff BB |
90 | inheritable = (prop == ZPROP_INVAL || zfs_prop_inheritable(prop)); |
91 | inheritstr = kmem_asprintf("%s%s", propname, ZPROP_INHERIT_SUFFIX); | |
92 | recvdstr = kmem_asprintf("%s%s", propname, ZPROP_RECVD_SUFFIX); | |
34dc7c2f BB |
93 | |
94 | /* | |
428870ff BB |
95 | * Note: dd may become NULL, therefore we shouldn't dereference it |
96 | * after this loop. | |
34dc7c2f BB |
97 | */ |
98 | for (; dd != NULL; dd = dd->dd_parent) { | |
34dc7c2f | 99 | ASSERT(RW_LOCK_HELD(&dd->dd_pool->dp_config_rwlock)); |
428870ff BB |
100 | |
101 | if (dd != target || snapshot) { | |
102 | if (!inheritable) | |
103 | break; | |
104 | inheriting = B_TRUE; | |
105 | } | |
106 | ||
107 | /* Check for a local value. */ | |
108 | err = zap_lookup(mos, dd->dd_phys->dd_props_zapobj, propname, | |
109 | intsz, numints, buf); | |
34dc7c2f | 110 | if (err != ENOENT) { |
428870ff | 111 | if (setpoint != NULL && err == 0) |
34dc7c2f BB |
112 | dsl_dir_name(dd, setpoint); |
113 | break; | |
114 | } | |
115 | ||
116 | /* | |
428870ff BB |
117 | * Skip the check for a received value if there is an explicit |
118 | * inheritance entry. | |
34dc7c2f | 119 | */ |
428870ff BB |
120 | err = zap_contains(mos, dd->dd_phys->dd_props_zapobj, |
121 | inheritstr); | |
122 | if (err != 0 && err != ENOENT) | |
34dc7c2f | 123 | break; |
428870ff BB |
124 | |
125 | if (err == ENOENT) { | |
126 | /* Check for a received value. */ | |
127 | err = zap_lookup(mos, dd->dd_phys->dd_props_zapobj, | |
128 | recvdstr, intsz, numints, buf); | |
129 | if (err != ENOENT) { | |
130 | if (setpoint != NULL && err == 0) { | |
131 | if (inheriting) { | |
132 | dsl_dir_name(dd, setpoint); | |
133 | } else { | |
134 | (void) strcpy(setpoint, | |
135 | ZPROP_SOURCE_VAL_RECVD); | |
136 | } | |
137 | } | |
138 | break; | |
139 | } | |
140 | } | |
141 | ||
142 | /* | |
143 | * If we found an explicit inheritance entry, err is zero even | |
144 | * though we haven't yet found the value, so reinitializing err | |
145 | * at the end of the loop (instead of at the beginning) ensures | |
146 | * that err has a valid post-loop value. | |
147 | */ | |
148 | err = ENOENT; | |
34dc7c2f | 149 | } |
428870ff | 150 | |
34dc7c2f | 151 | if (err == ENOENT) |
428870ff BB |
152 | err = dodefault(propname, intsz, numints, buf); |
153 | ||
154 | strfree(inheritstr); | |
155 | strfree(recvdstr); | |
34dc7c2f BB |
156 | |
157 | return (err); | |
158 | } | |
159 | ||
b128c09f BB |
160 | int |
161 | dsl_prop_get_ds(dsl_dataset_t *ds, const char *propname, | |
428870ff | 162 | int intsz, int numints, void *buf, char *setpoint) |
b128c09f | 163 | { |
428870ff BB |
164 | zfs_prop_t prop = zfs_name_to_prop(propname); |
165 | boolean_t inheritable; | |
166 | boolean_t snapshot; | |
167 | uint64_t zapobj; | |
168 | ||
b128c09f | 169 | ASSERT(RW_LOCK_HELD(&ds->ds_dir->dd_pool->dp_config_rwlock)); |
428870ff BB |
170 | inheritable = (prop == ZPROP_INVAL || zfs_prop_inheritable(prop)); |
171 | snapshot = (ds->ds_phys != NULL && dsl_dataset_is_snapshot(ds)); | |
172 | zapobj = (ds->ds_phys == NULL ? 0 : ds->ds_phys->ds_props_obj); | |
173 | ||
174 | if (zapobj != 0) { | |
175 | objset_t *mos = ds->ds_dir->dd_pool->dp_meta_objset; | |
176 | int err; | |
b128c09f | 177 | |
428870ff BB |
178 | ASSERT(snapshot); |
179 | ||
180 | /* Check for a local value. */ | |
181 | err = zap_lookup(mos, zapobj, propname, intsz, numints, buf); | |
b128c09f | 182 | if (err != ENOENT) { |
428870ff | 183 | if (setpoint != NULL && err == 0) |
b128c09f BB |
184 | dsl_dataset_name(ds, setpoint); |
185 | return (err); | |
186 | } | |
428870ff BB |
187 | |
188 | /* | |
189 | * Skip the check for a received value if there is an explicit | |
190 | * inheritance entry. | |
191 | */ | |
192 | if (inheritable) { | |
193 | char *inheritstr = kmem_asprintf("%s%s", propname, | |
194 | ZPROP_INHERIT_SUFFIX); | |
195 | err = zap_contains(mos, zapobj, inheritstr); | |
196 | strfree(inheritstr); | |
197 | if (err != 0 && err != ENOENT) | |
198 | return (err); | |
199 | } | |
200 | ||
201 | if (err == ENOENT) { | |
202 | /* Check for a received value. */ | |
203 | char *recvdstr = kmem_asprintf("%s%s", propname, | |
204 | ZPROP_RECVD_SUFFIX); | |
205 | err = zap_lookup(mos, zapobj, recvdstr, | |
206 | intsz, numints, buf); | |
207 | strfree(recvdstr); | |
208 | if (err != ENOENT) { | |
209 | if (setpoint != NULL && err == 0) | |
210 | (void) strcpy(setpoint, | |
211 | ZPROP_SOURCE_VAL_RECVD); | |
212 | return (err); | |
213 | } | |
214 | } | |
b128c09f BB |
215 | } |
216 | ||
217 | return (dsl_prop_get_dd(ds->ds_dir, propname, | |
428870ff | 218 | intsz, numints, buf, setpoint, snapshot)); |
b128c09f BB |
219 | } |
220 | ||
34dc7c2f BB |
221 | /* |
222 | * Register interest in the named property. We'll call the callback | |
223 | * once to notify it of the current property value, and again each time | |
224 | * the property changes, until this callback is unregistered. | |
225 | * | |
226 | * Return 0 on success, errno if the prop is not an integer value. | |
227 | */ | |
228 | int | |
229 | dsl_prop_register(dsl_dataset_t *ds, const char *propname, | |
230 | dsl_prop_changed_cb_t *callback, void *cbarg) | |
231 | { | |
232 | dsl_dir_t *dd = ds->ds_dir; | |
b128c09f | 233 | dsl_pool_t *dp = dd->dd_pool; |
34dc7c2f BB |
234 | uint64_t value; |
235 | dsl_prop_cb_record_t *cbr; | |
236 | int err; | |
237 | int need_rwlock; | |
238 | ||
b128c09f | 239 | need_rwlock = !RW_WRITE_HELD(&dp->dp_config_rwlock); |
34dc7c2f | 240 | if (need_rwlock) |
b128c09f | 241 | rw_enter(&dp->dp_config_rwlock, RW_READER); |
34dc7c2f | 242 | |
b128c09f | 243 | err = dsl_prop_get_ds(ds, propname, 8, 1, &value, NULL); |
34dc7c2f BB |
244 | if (err != 0) { |
245 | if (need_rwlock) | |
b128c09f | 246 | rw_exit(&dp->dp_config_rwlock); |
34dc7c2f BB |
247 | return (err); |
248 | } | |
249 | ||
250 | cbr = kmem_alloc(sizeof (dsl_prop_cb_record_t), KM_SLEEP); | |
251 | cbr->cbr_ds = ds; | |
252 | cbr->cbr_propname = kmem_alloc(strlen(propname)+1, KM_SLEEP); | |
253 | (void) strcpy((char *)cbr->cbr_propname, propname); | |
254 | cbr->cbr_func = callback; | |
255 | cbr->cbr_arg = cbarg; | |
256 | mutex_enter(&dd->dd_lock); | |
257 | list_insert_head(&dd->dd_prop_cbs, cbr); | |
258 | mutex_exit(&dd->dd_lock); | |
259 | ||
260 | cbr->cbr_func(cbr->cbr_arg, value); | |
261 | ||
34dc7c2f | 262 | if (need_rwlock) |
b128c09f | 263 | rw_exit(&dp->dp_config_rwlock); |
34dc7c2f BB |
264 | return (0); |
265 | } | |
266 | ||
267 | int | |
b128c09f | 268 | dsl_prop_get(const char *dsname, const char *propname, |
34dc7c2f BB |
269 | int intsz, int numints, void *buf, char *setpoint) |
270 | { | |
b128c09f | 271 | dsl_dataset_t *ds; |
34dc7c2f BB |
272 | int err; |
273 | ||
b128c09f | 274 | err = dsl_dataset_hold(dsname, FTAG, &ds); |
34dc7c2f BB |
275 | if (err) |
276 | return (err); | |
34dc7c2f | 277 | |
b128c09f BB |
278 | rw_enter(&ds->ds_dir->dd_pool->dp_config_rwlock, RW_READER); |
279 | err = dsl_prop_get_ds(ds, propname, intsz, numints, buf, setpoint); | |
280 | rw_exit(&ds->ds_dir->dd_pool->dp_config_rwlock); | |
34dc7c2f | 281 | |
b128c09f | 282 | dsl_dataset_rele(ds, FTAG); |
34dc7c2f BB |
283 | return (err); |
284 | } | |
285 | ||
286 | /* | |
287 | * Get the current property value. It may have changed by the time this | |
288 | * function returns, so it is NOT safe to follow up with | |
289 | * dsl_prop_register() and assume that the value has not changed in | |
290 | * between. | |
291 | * | |
292 | * Return 0 on success, ENOENT if ddname is invalid. | |
293 | */ | |
294 | int | |
295 | dsl_prop_get_integer(const char *ddname, const char *propname, | |
296 | uint64_t *valuep, char *setpoint) | |
297 | { | |
298 | return (dsl_prop_get(ddname, propname, 8, 1, valuep, setpoint)); | |
299 | } | |
300 | ||
428870ff BB |
301 | void |
302 | dsl_prop_setarg_init_uint64(dsl_prop_setarg_t *psa, const char *propname, | |
303 | zprop_source_t source, uint64_t *value) | |
304 | { | |
305 | psa->psa_name = propname; | |
306 | psa->psa_source = source; | |
307 | psa->psa_intsz = 8; | |
308 | psa->psa_numints = 1; | |
309 | psa->psa_value = value; | |
310 | ||
311 | psa->psa_effective_value = -1ULL; | |
312 | } | |
313 | ||
314 | /* | |
315 | * Predict the effective value of the given special property if it were set with | |
316 | * the given value and source. This is not a general purpose function. It exists | |
317 | * only to handle the special requirements of the quota and reservation | |
318 | * properties. The fact that these properties are non-inheritable greatly | |
319 | * simplifies the prediction logic. | |
320 | * | |
321 | * Returns 0 on success, a positive error code on failure, or -1 if called with | |
322 | * a property not handled by this function. | |
323 | */ | |
324 | int | |
325 | dsl_prop_predict_sync(dsl_dir_t *dd, dsl_prop_setarg_t *psa) | |
326 | { | |
327 | const char *propname = psa->psa_name; | |
328 | zfs_prop_t prop = zfs_name_to_prop(propname); | |
329 | zprop_source_t source = psa->psa_source; | |
330 | objset_t *mos; | |
331 | uint64_t zapobj; | |
332 | uint64_t version; | |
333 | char *recvdstr; | |
334 | int err = 0; | |
335 | ||
336 | switch (prop) { | |
337 | case ZFS_PROP_QUOTA: | |
338 | case ZFS_PROP_RESERVATION: | |
339 | case ZFS_PROP_REFQUOTA: | |
340 | case ZFS_PROP_REFRESERVATION: | |
341 | break; | |
342 | default: | |
343 | return (-1); | |
344 | } | |
345 | ||
346 | mos = dd->dd_pool->dp_meta_objset; | |
347 | zapobj = dd->dd_phys->dd_props_zapobj; | |
348 | recvdstr = kmem_asprintf("%s%s", propname, ZPROP_RECVD_SUFFIX); | |
349 | ||
350 | version = spa_version(dd->dd_pool->dp_spa); | |
351 | if (version < SPA_VERSION_RECVD_PROPS) { | |
352 | if (source & ZPROP_SRC_NONE) | |
353 | source = ZPROP_SRC_NONE; | |
354 | else if (source & ZPROP_SRC_RECEIVED) | |
355 | source = ZPROP_SRC_LOCAL; | |
356 | } | |
357 | ||
358 | switch (source) { | |
359 | case ZPROP_SRC_NONE: | |
360 | /* Revert to the received value, if any. */ | |
361 | err = zap_lookup(mos, zapobj, recvdstr, 8, 1, | |
362 | &psa->psa_effective_value); | |
363 | if (err == ENOENT) | |
364 | psa->psa_effective_value = 0; | |
365 | break; | |
366 | case ZPROP_SRC_LOCAL: | |
367 | psa->psa_effective_value = *(uint64_t *)psa->psa_value; | |
368 | break; | |
369 | case ZPROP_SRC_RECEIVED: | |
370 | /* | |
371 | * If there's no local setting, then the new received value will | |
372 | * be the effective value. | |
373 | */ | |
374 | err = zap_lookup(mos, zapobj, propname, 8, 1, | |
375 | &psa->psa_effective_value); | |
376 | if (err == ENOENT) | |
377 | psa->psa_effective_value = *(uint64_t *)psa->psa_value; | |
378 | break; | |
379 | case (ZPROP_SRC_NONE | ZPROP_SRC_RECEIVED): | |
380 | /* | |
381 | * We're clearing the received value, so the local setting (if | |
382 | * it exists) remains the effective value. | |
383 | */ | |
384 | err = zap_lookup(mos, zapobj, propname, 8, 1, | |
385 | &psa->psa_effective_value); | |
386 | if (err == ENOENT) | |
387 | psa->psa_effective_value = 0; | |
388 | break; | |
389 | default: | |
390 | cmn_err(CE_PANIC, "unexpected property source: %d", source); | |
391 | } | |
392 | ||
393 | strfree(recvdstr); | |
394 | ||
395 | if (err == ENOENT) | |
396 | return (0); | |
397 | ||
398 | return (err); | |
399 | } | |
400 | ||
401 | #ifdef ZFS_DEBUG | |
402 | void | |
403 | dsl_prop_check_prediction(dsl_dir_t *dd, dsl_prop_setarg_t *psa) | |
404 | { | |
405 | zfs_prop_t prop = zfs_name_to_prop(psa->psa_name); | |
406 | uint64_t intval; | |
407 | char setpoint[MAXNAMELEN]; | |
408 | uint64_t version = spa_version(dd->dd_pool->dp_spa); | |
409 | int err; | |
410 | ||
411 | if (version < SPA_VERSION_RECVD_PROPS) { | |
412 | switch (prop) { | |
413 | case ZFS_PROP_QUOTA: | |
414 | case ZFS_PROP_RESERVATION: | |
415 | return; | |
416 | } | |
417 | } | |
418 | ||
419 | err = dsl_prop_get_dd(dd, psa->psa_name, 8, 1, &intval, | |
420 | setpoint, B_FALSE); | |
421 | if (err == 0 && intval != psa->psa_effective_value) { | |
422 | cmn_err(CE_PANIC, "%s property, source: %x, " | |
423 | "predicted effective value: %llu, " | |
424 | "actual effective value: %llu (setpoint: %s)", | |
425 | psa->psa_name, psa->psa_source, | |
426 | (unsigned long long)psa->psa_effective_value, | |
427 | (unsigned long long)intval, setpoint); | |
428 | } | |
429 | } | |
430 | #endif | |
431 | ||
34dc7c2f BB |
432 | /* |
433 | * Unregister this callback. Return 0 on success, ENOENT if ddname is | |
434 | * invalid, ENOMSG if no matching callback registered. | |
435 | */ | |
436 | int | |
437 | dsl_prop_unregister(dsl_dataset_t *ds, const char *propname, | |
438 | dsl_prop_changed_cb_t *callback, void *cbarg) | |
439 | { | |
440 | dsl_dir_t *dd = ds->ds_dir; | |
441 | dsl_prop_cb_record_t *cbr; | |
442 | ||
443 | mutex_enter(&dd->dd_lock); | |
444 | for (cbr = list_head(&dd->dd_prop_cbs); | |
445 | cbr; cbr = list_next(&dd->dd_prop_cbs, cbr)) { | |
446 | if (cbr->cbr_ds == ds && | |
447 | cbr->cbr_func == callback && | |
448 | cbr->cbr_arg == cbarg && | |
449 | strcmp(cbr->cbr_propname, propname) == 0) | |
450 | break; | |
451 | } | |
452 | ||
453 | if (cbr == NULL) { | |
454 | mutex_exit(&dd->dd_lock); | |
455 | return (ENOMSG); | |
456 | } | |
457 | ||
458 | list_remove(&dd->dd_prop_cbs, cbr); | |
459 | mutex_exit(&dd->dd_lock); | |
460 | kmem_free((void*)cbr->cbr_propname, strlen(cbr->cbr_propname)+1); | |
461 | kmem_free(cbr, sizeof (dsl_prop_cb_record_t)); | |
462 | ||
34dc7c2f BB |
463 | return (0); |
464 | } | |
465 | ||
466 | /* | |
467 | * Return the number of callbacks that are registered for this dataset. | |
468 | */ | |
469 | int | |
470 | dsl_prop_numcb(dsl_dataset_t *ds) | |
471 | { | |
472 | dsl_dir_t *dd = ds->ds_dir; | |
473 | dsl_prop_cb_record_t *cbr; | |
474 | int num = 0; | |
475 | ||
476 | mutex_enter(&dd->dd_lock); | |
477 | for (cbr = list_head(&dd->dd_prop_cbs); | |
478 | cbr; cbr = list_next(&dd->dd_prop_cbs, cbr)) { | |
479 | if (cbr->cbr_ds == ds) | |
480 | num++; | |
481 | } | |
482 | mutex_exit(&dd->dd_lock); | |
483 | ||
484 | return (num); | |
485 | } | |
486 | ||
487 | static void | |
488 | dsl_prop_changed_notify(dsl_pool_t *dp, uint64_t ddobj, | |
489 | const char *propname, uint64_t value, int first) | |
490 | { | |
491 | dsl_dir_t *dd; | |
492 | dsl_prop_cb_record_t *cbr; | |
493 | objset_t *mos = dp->dp_meta_objset; | |
494 | zap_cursor_t zc; | |
495 | zap_attribute_t *za; | |
496 | int err; | |
497 | ||
498 | ASSERT(RW_WRITE_HELD(&dp->dp_config_rwlock)); | |
499 | err = dsl_dir_open_obj(dp, ddobj, NULL, FTAG, &dd); | |
500 | if (err) | |
501 | return; | |
502 | ||
503 | if (!first) { | |
504 | /* | |
505 | * If the prop is set here, then this change is not | |
506 | * being inherited here or below; stop the recursion. | |
507 | */ | |
428870ff | 508 | err = zap_contains(mos, dd->dd_phys->dd_props_zapobj, propname); |
34dc7c2f BB |
509 | if (err == 0) { |
510 | dsl_dir_close(dd, FTAG); | |
511 | return; | |
512 | } | |
513 | ASSERT3U(err, ==, ENOENT); | |
514 | } | |
515 | ||
516 | mutex_enter(&dd->dd_lock); | |
b128c09f BB |
517 | for (cbr = list_head(&dd->dd_prop_cbs); cbr; |
518 | cbr = list_next(&dd->dd_prop_cbs, cbr)) { | |
519 | uint64_t propobj = cbr->cbr_ds->ds_phys->ds_props_obj; | |
520 | ||
521 | if (strcmp(cbr->cbr_propname, propname) != 0) | |
522 | continue; | |
523 | ||
524 | /* | |
525 | * If the property is set on this ds, then it is not | |
526 | * inherited here; don't call the callback. | |
527 | */ | |
428870ff | 528 | if (propobj && 0 == zap_contains(mos, propobj, propname)) |
b128c09f BB |
529 | continue; |
530 | ||
531 | cbr->cbr_func(cbr->cbr_arg, value); | |
34dc7c2f BB |
532 | } |
533 | mutex_exit(&dd->dd_lock); | |
534 | ||
535 | za = kmem_alloc(sizeof (zap_attribute_t), KM_SLEEP); | |
536 | for (zap_cursor_init(&zc, mos, | |
537 | dd->dd_phys->dd_child_dir_zapobj); | |
538 | zap_cursor_retrieve(&zc, za) == 0; | |
539 | zap_cursor_advance(&zc)) { | |
540 | dsl_prop_changed_notify(dp, za->za_first_integer, | |
541 | propname, value, FALSE); | |
542 | } | |
543 | kmem_free(za, sizeof (zap_attribute_t)); | |
544 | zap_cursor_fini(&zc); | |
545 | dsl_dir_close(dd, FTAG); | |
546 | } | |
547 | ||
428870ff BB |
548 | void |
549 | dsl_prop_set_sync(void *arg1, void *arg2, dmu_tx_t *tx) | |
34dc7c2f | 550 | { |
b128c09f | 551 | dsl_dataset_t *ds = arg1; |
428870ff | 552 | dsl_prop_setarg_t *psa = arg2; |
b128c09f | 553 | objset_t *mos = ds->ds_dir->dd_pool->dp_meta_objset; |
428870ff | 554 | uint64_t zapobj, intval, dummy; |
34dc7c2f BB |
555 | int isint; |
556 | char valbuf[32]; | |
428870ff BB |
557 | char *valstr = NULL; |
558 | char *inheritstr; | |
559 | char *recvdstr; | |
560 | char *tbuf = NULL; | |
561 | int err; | |
562 | uint64_t version = spa_version(ds->ds_dir->dd_pool->dp_spa); | |
563 | const char *propname = psa->psa_name; | |
564 | zprop_source_t source = psa->psa_source; | |
34dc7c2f | 565 | |
428870ff | 566 | isint = (dodefault(propname, 8, 1, &intval) == 0); |
34dc7c2f | 567 | |
428870ff BB |
568 | if (ds->ds_phys != NULL && dsl_dataset_is_snapshot(ds)) { |
569 | ASSERT(version >= SPA_VERSION_SNAP_PROPS); | |
b128c09f BB |
570 | if (ds->ds_phys->ds_props_obj == 0) { |
571 | dmu_buf_will_dirty(ds->ds_dbuf, tx); | |
572 | ds->ds_phys->ds_props_obj = | |
573 | zap_create(mos, | |
574 | DMU_OT_DSL_PROPS, DMU_OT_NONE, 0, tx); | |
575 | } | |
576 | zapobj = ds->ds_phys->ds_props_obj; | |
577 | } else { | |
578 | zapobj = ds->ds_dir->dd_phys->dd_props_zapobj; | |
579 | } | |
580 | ||
428870ff BB |
581 | if (version < SPA_VERSION_RECVD_PROPS) { |
582 | zfs_prop_t prop = zfs_name_to_prop(propname); | |
583 | if (prop == ZFS_PROP_QUOTA || prop == ZFS_PROP_RESERVATION) | |
584 | return; | |
585 | ||
586 | if (source & ZPROP_SRC_NONE) | |
587 | source = ZPROP_SRC_NONE; | |
588 | else if (source & ZPROP_SRC_RECEIVED) | |
589 | source = ZPROP_SRC_LOCAL; | |
590 | } | |
591 | ||
592 | inheritstr = kmem_asprintf("%s%s", propname, ZPROP_INHERIT_SUFFIX); | |
593 | recvdstr = kmem_asprintf("%s%s", propname, ZPROP_RECVD_SUFFIX); | |
594 | ||
595 | switch (source) { | |
596 | case ZPROP_SRC_NONE: | |
597 | /* | |
598 | * revert to received value, if any (inherit -S) | |
599 | * - remove propname | |
600 | * - remove propname$inherit | |
601 | */ | |
602 | err = zap_remove(mos, zapobj, propname, tx); | |
603 | ASSERT(err == 0 || err == ENOENT); | |
604 | err = zap_remove(mos, zapobj, inheritstr, tx); | |
34dc7c2f | 605 | ASSERT(err == 0 || err == ENOENT); |
428870ff BB |
606 | break; |
607 | case ZPROP_SRC_LOCAL: | |
608 | /* | |
609 | * remove propname$inherit | |
610 | * set propname -> value | |
611 | */ | |
612 | err = zap_remove(mos, zapobj, inheritstr, tx); | |
613 | ASSERT(err == 0 || err == ENOENT); | |
614 | VERIFY(0 == zap_update(mos, zapobj, propname, | |
615 | psa->psa_intsz, psa->psa_numints, psa->psa_value, tx)); | |
616 | break; | |
617 | case ZPROP_SRC_INHERITED: | |
618 | /* | |
619 | * explicitly inherit | |
620 | * - remove propname | |
621 | * - set propname$inherit | |
622 | */ | |
623 | err = zap_remove(mos, zapobj, propname, tx); | |
624 | ASSERT(err == 0 || err == ENOENT); | |
625 | if (version >= SPA_VERSION_RECVD_PROPS && | |
626 | dsl_prop_get_ds(ds, ZPROP_HAS_RECVD, 8, 1, &dummy, | |
627 | NULL) == 0) { | |
628 | dummy = 0; | |
629 | err = zap_update(mos, zapobj, inheritstr, | |
630 | 8, 1, &dummy, tx); | |
631 | ASSERT(err == 0); | |
34dc7c2f | 632 | } |
428870ff BB |
633 | break; |
634 | case ZPROP_SRC_RECEIVED: | |
635 | /* | |
636 | * set propname$recvd -> value | |
637 | */ | |
638 | err = zap_update(mos, zapobj, recvdstr, | |
639 | psa->psa_intsz, psa->psa_numints, psa->psa_value, tx); | |
640 | ASSERT(err == 0); | |
641 | break; | |
642 | case (ZPROP_SRC_NONE | ZPROP_SRC_LOCAL | ZPROP_SRC_RECEIVED): | |
643 | /* | |
644 | * clear local and received settings | |
645 | * - remove propname | |
646 | * - remove propname$inherit | |
647 | * - remove propname$recvd | |
648 | */ | |
649 | err = zap_remove(mos, zapobj, propname, tx); | |
650 | ASSERT(err == 0 || err == ENOENT); | |
651 | err = zap_remove(mos, zapobj, inheritstr, tx); | |
652 | ASSERT(err == 0 || err == ENOENT); | |
653 | /* FALLTHRU */ | |
654 | case (ZPROP_SRC_NONE | ZPROP_SRC_RECEIVED): | |
655 | /* | |
656 | * remove propname$recvd | |
657 | */ | |
658 | err = zap_remove(mos, zapobj, recvdstr, tx); | |
659 | ASSERT(err == 0 || err == ENOENT); | |
660 | break; | |
661 | default: | |
662 | cmn_err(CE_PANIC, "unexpected property source: %d", source); | |
34dc7c2f BB |
663 | } |
664 | ||
428870ff BB |
665 | strfree(inheritstr); |
666 | strfree(recvdstr); | |
667 | ||
34dc7c2f | 668 | if (isint) { |
428870ff BB |
669 | VERIFY(0 == dsl_prop_get_ds(ds, propname, 8, 1, &intval, NULL)); |
670 | ||
671 | if (ds->ds_phys != NULL && dsl_dataset_is_snapshot(ds)) { | |
b128c09f BB |
672 | dsl_prop_cb_record_t *cbr; |
673 | /* | |
674 | * It's a snapshot; nothing can inherit this | |
675 | * property, so just look for callbacks on this | |
676 | * ds here. | |
677 | */ | |
678 | mutex_enter(&ds->ds_dir->dd_lock); | |
679 | for (cbr = list_head(&ds->ds_dir->dd_prop_cbs); cbr; | |
680 | cbr = list_next(&ds->ds_dir->dd_prop_cbs, cbr)) { | |
681 | if (cbr->cbr_ds == ds && | |
428870ff | 682 | strcmp(cbr->cbr_propname, propname) == 0) |
b128c09f BB |
683 | cbr->cbr_func(cbr->cbr_arg, intval); |
684 | } | |
685 | mutex_exit(&ds->ds_dir->dd_lock); | |
686 | } else { | |
687 | dsl_prop_changed_notify(ds->ds_dir->dd_pool, | |
428870ff | 688 | ds->ds_dir->dd_object, propname, intval, TRUE); |
b128c09f | 689 | } |
428870ff | 690 | |
34dc7c2f BB |
691 | (void) snprintf(valbuf, sizeof (valbuf), |
692 | "%lld", (longlong_t)intval); | |
693 | valstr = valbuf; | |
694 | } else { | |
428870ff BB |
695 | if (source == ZPROP_SRC_LOCAL) { |
696 | valstr = (char *)psa->psa_value; | |
697 | } else { | |
698 | tbuf = kmem_alloc(ZAP_MAXVALUELEN, KM_SLEEP); | |
699 | if (dsl_prop_get_ds(ds, propname, 1, | |
700 | ZAP_MAXVALUELEN, tbuf, NULL) == 0) | |
701 | valstr = tbuf; | |
702 | } | |
34dc7c2f | 703 | } |
428870ff BB |
704 | |
705 | spa_history_log_internal((source == ZPROP_SRC_NONE || | |
706 | source == ZPROP_SRC_INHERITED) ? LOG_DS_INHERIT : | |
707 | LOG_DS_PROPSET, ds->ds_dir->dd_pool->dp_spa, tx, | |
708 | "%s=%s dataset = %llu", propname, | |
709 | (valstr == NULL ? "" : valstr), ds->ds_object); | |
710 | ||
711 | if (tbuf != NULL) | |
712 | kmem_free(tbuf, ZAP_MAXVALUELEN); | |
34dc7c2f BB |
713 | } |
714 | ||
9babb374 | 715 | void |
428870ff | 716 | dsl_props_set_sync(void *arg1, void *arg2, dmu_tx_t *tx) |
9babb374 BB |
717 | { |
718 | dsl_dataset_t *ds = arg1; | |
428870ff BB |
719 | dsl_props_arg_t *pa = arg2; |
720 | nvlist_t *props = pa->pa_props; | |
721 | dsl_prop_setarg_t psa; | |
9babb374 BB |
722 | nvpair_t *elem = NULL; |
723 | ||
428870ff | 724 | psa.psa_source = pa->pa_source; |
9babb374 | 725 | |
428870ff BB |
726 | while ((elem = nvlist_next_nvpair(props, elem)) != NULL) { |
727 | nvpair_t *pair = elem; | |
9babb374 | 728 | |
428870ff BB |
729 | psa.psa_name = nvpair_name(pair); |
730 | ||
731 | if (nvpair_type(pair) == DATA_TYPE_NVLIST) { | |
732 | /* | |
733 | * dsl_prop_get_all_impl() returns properties in this | |
734 | * format. | |
735 | */ | |
736 | nvlist_t *attrs; | |
737 | VERIFY(nvpair_value_nvlist(pair, &attrs) == 0); | |
738 | VERIFY(nvlist_lookup_nvpair(attrs, ZPROP_VALUE, | |
739 | &pair) == 0); | |
740 | } | |
741 | ||
742 | if (nvpair_type(pair) == DATA_TYPE_STRING) { | |
743 | VERIFY(nvpair_value_string(pair, | |
744 | (char **)&psa.psa_value) == 0); | |
745 | psa.psa_intsz = 1; | |
746 | psa.psa_numints = strlen(psa.psa_value) + 1; | |
9babb374 BB |
747 | } else { |
748 | uint64_t intval; | |
428870ff BB |
749 | VERIFY(nvpair_value_uint64(pair, &intval) == 0); |
750 | psa.psa_intsz = sizeof (intval); | |
751 | psa.psa_numints = 1; | |
752 | psa.psa_value = &intval; | |
9babb374 | 753 | } |
428870ff | 754 | dsl_prop_set_sync(ds, &psa, tx); |
9babb374 BB |
755 | } |
756 | } | |
757 | ||
34dc7c2f | 758 | void |
45d1cae3 | 759 | dsl_dir_prop_set_uint64_sync(dsl_dir_t *dd, const char *name, uint64_t val, |
428870ff | 760 | dmu_tx_t *tx) |
34dc7c2f BB |
761 | { |
762 | objset_t *mos = dd->dd_pool->dp_meta_objset; | |
763 | uint64_t zapobj = dd->dd_phys->dd_props_zapobj; | |
764 | ||
765 | ASSERT(dmu_tx_is_syncing(tx)); | |
766 | ||
767 | VERIFY(0 == zap_update(mos, zapobj, name, sizeof (val), 1, &val, tx)); | |
768 | ||
769 | dsl_prop_changed_notify(dd->dd_pool, dd->dd_object, name, val, TRUE); | |
770 | ||
428870ff | 771 | spa_history_log_internal(LOG_DS_PROPSET, dd->dd_pool->dp_spa, tx, |
34dc7c2f BB |
772 | "%s=%llu dataset = %llu", name, (u_longlong_t)val, |
773 | dd->dd_phys->dd_head_dataset_obj); | |
774 | } | |
775 | ||
776 | int | |
428870ff | 777 | dsl_prop_set(const char *dsname, const char *propname, zprop_source_t source, |
34dc7c2f BB |
778 | int intsz, int numints, const void *buf) |
779 | { | |
b128c09f | 780 | dsl_dataset_t *ds; |
9babb374 | 781 | uint64_t version; |
34dc7c2f | 782 | int err; |
428870ff | 783 | dsl_prop_setarg_t psa; |
34dc7c2f BB |
784 | |
785 | /* | |
786 | * We must do these checks before we get to the syncfunc, since | |
787 | * it can't fail. | |
788 | */ | |
789 | if (strlen(propname) >= ZAP_MAXNAMELEN) | |
790 | return (ENAMETOOLONG); | |
34dc7c2f | 791 | |
b128c09f | 792 | err = dsl_dataset_hold(dsname, FTAG, &ds); |
34dc7c2f BB |
793 | if (err) |
794 | return (err); | |
b128c09f | 795 | |
9babb374 BB |
796 | version = spa_version(ds->ds_dir->dd_pool->dp_spa); |
797 | if (intsz * numints >= (version < SPA_VERSION_STMF_PROP ? | |
798 | ZAP_OLDMAXVALUELEN : ZAP_MAXVALUELEN)) { | |
799 | dsl_dataset_rele(ds, FTAG); | |
800 | return (E2BIG); | |
801 | } | |
b128c09f | 802 | if (dsl_dataset_is_snapshot(ds) && |
9babb374 | 803 | version < SPA_VERSION_SNAP_PROPS) { |
b128c09f BB |
804 | dsl_dataset_rele(ds, FTAG); |
805 | return (ENOTSUP); | |
806 | } | |
807 | ||
428870ff BB |
808 | psa.psa_name = propname; |
809 | psa.psa_source = source; | |
810 | psa.psa_intsz = intsz; | |
811 | psa.psa_numints = numints; | |
812 | psa.psa_value = buf; | |
813 | psa.psa_effective_value = -1ULL; | |
814 | ||
b128c09f BB |
815 | err = dsl_sync_task_do(ds->ds_dir->dd_pool, |
816 | NULL, dsl_prop_set_sync, ds, &psa, 2); | |
817 | ||
818 | dsl_dataset_rele(ds, FTAG); | |
34dc7c2f BB |
819 | return (err); |
820 | } | |
821 | ||
9babb374 | 822 | int |
428870ff | 823 | dsl_props_set(const char *dsname, zprop_source_t source, nvlist_t *props) |
9babb374 BB |
824 | { |
825 | dsl_dataset_t *ds; | |
826 | uint64_t version; | |
827 | nvpair_t *elem = NULL; | |
428870ff | 828 | dsl_props_arg_t pa; |
9babb374 BB |
829 | int err; |
830 | ||
831 | if (err = dsl_dataset_hold(dsname, FTAG, &ds)) | |
832 | return (err); | |
833 | /* | |
834 | * Do these checks before the syncfunc, since it can't fail. | |
835 | */ | |
836 | version = spa_version(ds->ds_dir->dd_pool->dp_spa); | |
428870ff | 837 | while ((elem = nvlist_next_nvpair(props, elem)) != NULL) { |
9babb374 BB |
838 | if (strlen(nvpair_name(elem)) >= ZAP_MAXNAMELEN) { |
839 | dsl_dataset_rele(ds, FTAG); | |
840 | return (ENAMETOOLONG); | |
841 | } | |
842 | if (nvpair_type(elem) == DATA_TYPE_STRING) { | |
843 | char *valstr; | |
844 | VERIFY(nvpair_value_string(elem, &valstr) == 0); | |
845 | if (strlen(valstr) >= (version < | |
846 | SPA_VERSION_STMF_PROP ? | |
847 | ZAP_OLDMAXVALUELEN : ZAP_MAXVALUELEN)) { | |
848 | dsl_dataset_rele(ds, FTAG); | |
849 | return (E2BIG); | |
850 | } | |
851 | } | |
852 | } | |
853 | ||
854 | if (dsl_dataset_is_snapshot(ds) && | |
855 | version < SPA_VERSION_SNAP_PROPS) { | |
856 | dsl_dataset_rele(ds, FTAG); | |
857 | return (ENOTSUP); | |
858 | } | |
859 | ||
428870ff BB |
860 | pa.pa_props = props; |
861 | pa.pa_source = source; | |
862 | ||
9babb374 | 863 | err = dsl_sync_task_do(ds->ds_dir->dd_pool, |
428870ff | 864 | NULL, dsl_props_set_sync, ds, &pa, 2); |
9babb374 BB |
865 | |
866 | dsl_dataset_rele(ds, FTAG); | |
867 | return (err); | |
868 | } | |
869 | ||
428870ff BB |
870 | typedef enum dsl_prop_getflags { |
871 | DSL_PROP_GET_INHERITING = 0x1, /* searching parent of target ds */ | |
872 | DSL_PROP_GET_SNAPSHOT = 0x2, /* snapshot dataset */ | |
873 | DSL_PROP_GET_LOCAL = 0x4, /* local properties */ | |
874 | DSL_PROP_GET_RECEIVED = 0x8 /* received properties */ | |
875 | } dsl_prop_getflags_t; | |
876 | ||
877 | static int | |
878 | dsl_prop_get_all_impl(objset_t *mos, uint64_t propobj, | |
879 | const char *setpoint, dsl_prop_getflags_t flags, nvlist_t *nv) | |
880 | { | |
881 | zap_cursor_t zc; | |
882 | zap_attribute_t za; | |
883 | int err = 0; | |
884 | ||
885 | for (zap_cursor_init(&zc, mos, propobj); | |
886 | (err = zap_cursor_retrieve(&zc, &za)) == 0; | |
887 | zap_cursor_advance(&zc)) { | |
888 | nvlist_t *propval; | |
889 | zfs_prop_t prop; | |
890 | char buf[ZAP_MAXNAMELEN]; | |
891 | char *valstr; | |
892 | const char *suffix; | |
893 | const char *propname; | |
894 | const char *source; | |
895 | ||
896 | suffix = strchr(za.za_name, '$'); | |
897 | ||
898 | if (suffix == NULL) { | |
899 | /* | |
900 | * Skip local properties if we only want received | |
901 | * properties. | |
902 | */ | |
903 | if (flags & DSL_PROP_GET_RECEIVED) | |
904 | continue; | |
905 | ||
906 | propname = za.za_name; | |
907 | source = setpoint; | |
908 | } else if (strcmp(suffix, ZPROP_INHERIT_SUFFIX) == 0) { | |
909 | /* Skip explicitly inherited entries. */ | |
910 | continue; | |
911 | } else if (strcmp(suffix, ZPROP_RECVD_SUFFIX) == 0) { | |
912 | if (flags & DSL_PROP_GET_LOCAL) | |
913 | continue; | |
914 | ||
915 | (void) strncpy(buf, za.za_name, (suffix - za.za_name)); | |
916 | buf[suffix - za.za_name] = '\0'; | |
917 | propname = buf; | |
918 | ||
919 | if (!(flags & DSL_PROP_GET_RECEIVED)) { | |
920 | /* Skip if locally overridden. */ | |
921 | err = zap_contains(mos, propobj, propname); | |
922 | if (err == 0) | |
923 | continue; | |
924 | if (err != ENOENT) | |
925 | break; | |
926 | ||
927 | /* Skip if explicitly inherited. */ | |
928 | valstr = kmem_asprintf("%s%s", propname, | |
929 | ZPROP_INHERIT_SUFFIX); | |
930 | err = zap_contains(mos, propobj, valstr); | |
931 | strfree(valstr); | |
932 | if (err == 0) | |
933 | continue; | |
934 | if (err != ENOENT) | |
935 | break; | |
936 | } | |
937 | ||
938 | source = ((flags & DSL_PROP_GET_INHERITING) ? | |
939 | setpoint : ZPROP_SOURCE_VAL_RECVD); | |
940 | } else { | |
941 | /* | |
942 | * For backward compatibility, skip suffixes we don't | |
943 | * recognize. | |
944 | */ | |
945 | continue; | |
946 | } | |
947 | ||
948 | prop = zfs_name_to_prop(propname); | |
949 | ||
950 | /* Skip non-inheritable properties. */ | |
951 | if ((flags & DSL_PROP_GET_INHERITING) && prop != ZPROP_INVAL && | |
952 | !zfs_prop_inheritable(prop)) | |
953 | continue; | |
954 | ||
955 | /* Skip properties not valid for this type. */ | |
956 | if ((flags & DSL_PROP_GET_SNAPSHOT) && prop != ZPROP_INVAL && | |
957 | !zfs_prop_valid_for_type(prop, ZFS_TYPE_SNAPSHOT)) | |
958 | continue; | |
959 | ||
960 | /* Skip properties already defined. */ | |
961 | if (nvlist_exists(nv, propname)) | |
962 | continue; | |
963 | ||
964 | VERIFY(nvlist_alloc(&propval, NV_UNIQUE_NAME, KM_SLEEP) == 0); | |
965 | if (za.za_integer_length == 1) { | |
966 | /* | |
967 | * String property | |
968 | */ | |
969 | char *tmp = kmem_alloc(za.za_num_integers, | |
970 | KM_SLEEP); | |
971 | err = zap_lookup(mos, propobj, | |
972 | za.za_name, 1, za.za_num_integers, tmp); | |
973 | if (err != 0) { | |
974 | kmem_free(tmp, za.za_num_integers); | |
975 | break; | |
976 | } | |
977 | VERIFY(nvlist_add_string(propval, ZPROP_VALUE, | |
978 | tmp) == 0); | |
979 | kmem_free(tmp, za.za_num_integers); | |
980 | } else { | |
981 | /* | |
982 | * Integer property | |
983 | */ | |
984 | ASSERT(za.za_integer_length == 8); | |
985 | (void) nvlist_add_uint64(propval, ZPROP_VALUE, | |
986 | za.za_first_integer); | |
987 | } | |
988 | ||
989 | VERIFY(nvlist_add_string(propval, ZPROP_SOURCE, source) == 0); | |
990 | VERIFY(nvlist_add_nvlist(nv, propname, propval) == 0); | |
991 | nvlist_free(propval); | |
992 | } | |
993 | zap_cursor_fini(&zc); | |
994 | if (err == ENOENT) | |
995 | err = 0; | |
996 | return (err); | |
997 | } | |
998 | ||
34dc7c2f BB |
999 | /* |
1000 | * Iterate over all properties for this dataset and return them in an nvlist. | |
1001 | */ | |
428870ff BB |
1002 | static int |
1003 | dsl_prop_get_all_ds(dsl_dataset_t *ds, nvlist_t **nvp, | |
1004 | dsl_prop_getflags_t flags) | |
34dc7c2f | 1005 | { |
34dc7c2f | 1006 | dsl_dir_t *dd = ds->ds_dir; |
b128c09f BB |
1007 | dsl_pool_t *dp = dd->dd_pool; |
1008 | objset_t *mos = dp->dp_meta_objset; | |
428870ff BB |
1009 | int err = 0; |
1010 | char setpoint[MAXNAMELEN]; | |
34dc7c2f BB |
1011 | |
1012 | VERIFY(nvlist_alloc(nvp, NV_UNIQUE_NAME, KM_SLEEP) == 0); | |
1013 | ||
428870ff BB |
1014 | if (dsl_dataset_is_snapshot(ds)) |
1015 | flags |= DSL_PROP_GET_SNAPSHOT; | |
34dc7c2f BB |
1016 | |
1017 | rw_enter(&dp->dp_config_rwlock, RW_READER); | |
428870ff BB |
1018 | |
1019 | if (ds->ds_phys->ds_props_obj != 0) { | |
1020 | ASSERT(flags & DSL_PROP_GET_SNAPSHOT); | |
1021 | dsl_dataset_name(ds, setpoint); | |
1022 | err = dsl_prop_get_all_impl(mos, ds->ds_phys->ds_props_obj, | |
1023 | setpoint, flags, *nvp); | |
1024 | if (err) | |
1025 | goto out; | |
1026 | } | |
1027 | ||
1028 | for (; dd != NULL; dd = dd->dd_parent) { | |
1029 | if (dd != ds->ds_dir || (flags & DSL_PROP_GET_SNAPSHOT)) { | |
1030 | if (flags & (DSL_PROP_GET_LOCAL | | |
1031 | DSL_PROP_GET_RECEIVED)) | |
1032 | break; | |
1033 | flags |= DSL_PROP_GET_INHERITING; | |
b128c09f | 1034 | } |
428870ff BB |
1035 | dsl_dir_name(dd, setpoint); |
1036 | err = dsl_prop_get_all_impl(mos, dd->dd_phys->dd_props_zapobj, | |
1037 | setpoint, flags, *nvp); | |
1038 | if (err) | |
1039 | break; | |
1040 | } | |
1041 | out: | |
1042 | rw_exit(&dp->dp_config_rwlock); | |
1043 | return (err); | |
1044 | } | |
34dc7c2f | 1045 | |
428870ff BB |
1046 | boolean_t |
1047 | dsl_prop_get_hasrecvd(objset_t *os) | |
1048 | { | |
1049 | dsl_dataset_t *ds = os->os_dsl_dataset; | |
1050 | int rc; | |
1051 | uint64_t dummy; | |
b128c09f | 1052 | |
428870ff BB |
1053 | rw_enter(&ds->ds_dir->dd_pool->dp_config_rwlock, RW_READER); |
1054 | rc = dsl_prop_get_ds(ds, ZPROP_HAS_RECVD, 8, 1, &dummy, NULL); | |
1055 | rw_exit(&ds->ds_dir->dd_pool->dp_config_rwlock); | |
1056 | ASSERT(rc != 0 || spa_version(os->os_spa) >= SPA_VERSION_RECVD_PROPS); | |
1057 | return (rc == 0); | |
1058 | } | |
34dc7c2f | 1059 | |
428870ff BB |
1060 | static void |
1061 | dsl_prop_set_hasrecvd_impl(objset_t *os, zprop_source_t source) | |
1062 | { | |
1063 | dsl_dataset_t *ds = os->os_dsl_dataset; | |
1064 | uint64_t dummy = 0; | |
1065 | dsl_prop_setarg_t psa; | |
34dc7c2f | 1066 | |
428870ff BB |
1067 | if (spa_version(os->os_spa) < SPA_VERSION_RECVD_PROPS) |
1068 | return; | |
34dc7c2f | 1069 | |
428870ff | 1070 | dsl_prop_setarg_init_uint64(&psa, ZPROP_HAS_RECVD, source, &dummy); |
34dc7c2f | 1071 | |
428870ff BB |
1072 | (void) dsl_sync_task_do(ds->ds_dir->dd_pool, NULL, |
1073 | dsl_prop_set_sync, ds, &psa, 2); | |
1074 | } | |
34dc7c2f | 1075 | |
428870ff BB |
1076 | /* |
1077 | * Call after successfully receiving properties to ensure that only the first | |
1078 | * receive on or after SPA_VERSION_RECVD_PROPS blows away local properties. | |
1079 | */ | |
1080 | void | |
1081 | dsl_prop_set_hasrecvd(objset_t *os) | |
1082 | { | |
1083 | if (dsl_prop_get_hasrecvd(os)) { | |
1084 | ASSERT(spa_version(os->os_spa) >= SPA_VERSION_RECVD_PROPS); | |
1085 | return; | |
34dc7c2f | 1086 | } |
428870ff BB |
1087 | dsl_prop_set_hasrecvd_impl(os, ZPROP_SRC_LOCAL); |
1088 | } | |
34dc7c2f | 1089 | |
428870ff BB |
1090 | void |
1091 | dsl_prop_unset_hasrecvd(objset_t *os) | |
1092 | { | |
1093 | dsl_prop_set_hasrecvd_impl(os, ZPROP_SRC_NONE); | |
1094 | } | |
1095 | ||
1096 | int | |
1097 | dsl_prop_get_all(objset_t *os, nvlist_t **nvp) | |
1098 | { | |
1099 | return (dsl_prop_get_all_ds(os->os_dsl_dataset, nvp, 0)); | |
1100 | } | |
1101 | ||
1102 | int | |
1103 | dsl_prop_get_received(objset_t *os, nvlist_t **nvp) | |
1104 | { | |
1105 | /* | |
1106 | * Received properties are not distinguishable from local properties | |
1107 | * until the dataset has received properties on or after | |
1108 | * SPA_VERSION_RECVD_PROPS. | |
1109 | */ | |
1110 | dsl_prop_getflags_t flags = (dsl_prop_get_hasrecvd(os) ? | |
1111 | DSL_PROP_GET_RECEIVED : DSL_PROP_GET_LOCAL); | |
1112 | return (dsl_prop_get_all_ds(os->os_dsl_dataset, nvp, flags)); | |
34dc7c2f BB |
1113 | } |
1114 | ||
1115 | void | |
1116 | dsl_prop_nvlist_add_uint64(nvlist_t *nv, zfs_prop_t prop, uint64_t value) | |
1117 | { | |
1118 | nvlist_t *propval; | |
428870ff BB |
1119 | const char *propname = zfs_prop_to_name(prop); |
1120 | uint64_t default_value; | |
1121 | ||
1122 | if (nvlist_lookup_nvlist(nv, propname, &propval) == 0) { | |
1123 | VERIFY(nvlist_add_uint64(propval, ZPROP_VALUE, value) == 0); | |
1124 | return; | |
1125 | } | |
34dc7c2f BB |
1126 | |
1127 | VERIFY(nvlist_alloc(&propval, NV_UNIQUE_NAME, KM_SLEEP) == 0); | |
1128 | VERIFY(nvlist_add_uint64(propval, ZPROP_VALUE, value) == 0); | |
428870ff BB |
1129 | /* Indicate the default source if we can. */ |
1130 | if (dodefault(propname, 8, 1, &default_value) == 0 && | |
1131 | value == default_value) { | |
1132 | VERIFY(nvlist_add_string(propval, ZPROP_SOURCE, "") == 0); | |
1133 | } | |
1134 | VERIFY(nvlist_add_nvlist(nv, propname, propval) == 0); | |
34dc7c2f BB |
1135 | nvlist_free(propval); |
1136 | } | |
1137 | ||
1138 | void | |
1139 | dsl_prop_nvlist_add_string(nvlist_t *nv, zfs_prop_t prop, const char *value) | |
1140 | { | |
1141 | nvlist_t *propval; | |
428870ff BB |
1142 | const char *propname = zfs_prop_to_name(prop); |
1143 | ||
1144 | if (nvlist_lookup_nvlist(nv, propname, &propval) == 0) { | |
1145 | VERIFY(nvlist_add_string(propval, ZPROP_VALUE, value) == 0); | |
1146 | return; | |
1147 | } | |
34dc7c2f BB |
1148 | |
1149 | VERIFY(nvlist_alloc(&propval, NV_UNIQUE_NAME, KM_SLEEP) == 0); | |
1150 | VERIFY(nvlist_add_string(propval, ZPROP_VALUE, value) == 0); | |
428870ff | 1151 | VERIFY(nvlist_add_nvlist(nv, propname, propval) == 0); |
34dc7c2f BB |
1152 | nvlist_free(propval); |
1153 | } |