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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 | /* | |
22 | * Copyright 2008 Sun Microsystems, Inc. All rights reserved. | |
23 | * Use is subject to license terms. | |
24 | */ | |
25 | ||
b128c09f | 26 | #pragma ident "%Z%%M% %I% %E% SMI" |
34dc7c2f BB |
27 | |
28 | #include <sys/dmu.h> | |
29 | #include <sys/dmu_objset.h> | |
30 | #include <sys/dmu_tx.h> | |
31 | #include <sys/dsl_dataset.h> | |
32 | #include <sys/dsl_dir.h> | |
33 | #include <sys/dsl_prop.h> | |
34 | #include <sys/dsl_synctask.h> | |
35 | #include <sys/spa.h> | |
36 | #include <sys/zio_checksum.h> /* for the default checksum value */ | |
37 | #include <sys/zap.h> | |
38 | #include <sys/fs/zfs.h> | |
39 | ||
40 | #include "zfs_prop.h" | |
41 | ||
42 | static int | |
43 | dodefault(const char *propname, int intsz, int numint, void *buf) | |
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), | |
60 | numint); | |
61 | } else { | |
62 | if (intsz != 8 || numint < 1) | |
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, | |
34dc7c2f BB |
73 | int intsz, int numint, void *buf, char *setpoint) |
74 | { | |
75 | int err = ENOENT; | |
b128c09f | 76 | objset_t *mos = dd->dd_pool->dp_meta_objset; |
34dc7c2f BB |
77 | zfs_prop_t prop; |
78 | ||
b128c09f BB |
79 | ASSERT(RW_LOCK_HELD(&dd->dd_pool->dp_config_rwlock)); |
80 | ||
34dc7c2f BB |
81 | if (setpoint) |
82 | setpoint[0] = '\0'; | |
83 | ||
84 | prop = zfs_name_to_prop(propname); | |
85 | ||
86 | /* | |
87 | * Note: dd may be NULL, therefore we shouldn't dereference it | |
88 | * ouside this loop. | |
89 | */ | |
90 | for (; dd != NULL; dd = dd->dd_parent) { | |
34dc7c2f BB |
91 | ASSERT(RW_LOCK_HELD(&dd->dd_pool->dp_config_rwlock)); |
92 | err = zap_lookup(mos, dd->dd_phys->dd_props_zapobj, | |
93 | propname, intsz, numint, buf); | |
94 | if (err != ENOENT) { | |
95 | if (setpoint) | |
96 | dsl_dir_name(dd, setpoint); | |
97 | break; | |
98 | } | |
99 | ||
100 | /* | |
101 | * Break out of this loop for non-inheritable properties. | |
102 | */ | |
103 | if (prop != ZPROP_INVAL && !zfs_prop_inheritable(prop)) | |
104 | break; | |
105 | } | |
106 | if (err == ENOENT) | |
107 | err = dodefault(propname, intsz, numint, buf); | |
108 | ||
109 | return (err); | |
110 | } | |
111 | ||
b128c09f BB |
112 | int |
113 | dsl_prop_get_ds(dsl_dataset_t *ds, const char *propname, | |
114 | int intsz, int numint, void *buf, char *setpoint) | |
115 | { | |
116 | ASSERT(RW_LOCK_HELD(&ds->ds_dir->dd_pool->dp_config_rwlock)); | |
117 | ||
118 | if (ds->ds_phys->ds_props_obj) { | |
119 | int err = zap_lookup(ds->ds_dir->dd_pool->dp_meta_objset, | |
120 | ds->ds_phys->ds_props_obj, propname, intsz, numint, buf); | |
121 | if (err != ENOENT) { | |
122 | if (setpoint) | |
123 | dsl_dataset_name(ds, setpoint); | |
124 | return (err); | |
125 | } | |
126 | } | |
127 | ||
128 | return (dsl_prop_get_dd(ds->ds_dir, propname, | |
129 | intsz, numint, buf, setpoint)); | |
130 | } | |
131 | ||
34dc7c2f BB |
132 | /* |
133 | * Register interest in the named property. We'll call the callback | |
134 | * once to notify it of the current property value, and again each time | |
135 | * the property changes, until this callback is unregistered. | |
136 | * | |
137 | * Return 0 on success, errno if the prop is not an integer value. | |
138 | */ | |
139 | int | |
140 | dsl_prop_register(dsl_dataset_t *ds, const char *propname, | |
141 | dsl_prop_changed_cb_t *callback, void *cbarg) | |
142 | { | |
143 | dsl_dir_t *dd = ds->ds_dir; | |
b128c09f | 144 | dsl_pool_t *dp = dd->dd_pool; |
34dc7c2f BB |
145 | uint64_t value; |
146 | dsl_prop_cb_record_t *cbr; | |
147 | int err; | |
148 | int need_rwlock; | |
149 | ||
b128c09f | 150 | need_rwlock = !RW_WRITE_HELD(&dp->dp_config_rwlock); |
34dc7c2f | 151 | if (need_rwlock) |
b128c09f | 152 | rw_enter(&dp->dp_config_rwlock, RW_READER); |
34dc7c2f | 153 | |
b128c09f | 154 | err = dsl_prop_get_ds(ds, propname, 8, 1, &value, NULL); |
34dc7c2f BB |
155 | if (err != 0) { |
156 | if (need_rwlock) | |
b128c09f | 157 | rw_exit(&dp->dp_config_rwlock); |
34dc7c2f BB |
158 | return (err); |
159 | } | |
160 | ||
161 | cbr = kmem_alloc(sizeof (dsl_prop_cb_record_t), KM_SLEEP); | |
162 | cbr->cbr_ds = ds; | |
163 | cbr->cbr_propname = kmem_alloc(strlen(propname)+1, KM_SLEEP); | |
164 | (void) strcpy((char *)cbr->cbr_propname, propname); | |
165 | cbr->cbr_func = callback; | |
166 | cbr->cbr_arg = cbarg; | |
167 | mutex_enter(&dd->dd_lock); | |
168 | list_insert_head(&dd->dd_prop_cbs, cbr); | |
169 | mutex_exit(&dd->dd_lock); | |
170 | ||
171 | cbr->cbr_func(cbr->cbr_arg, value); | |
172 | ||
b128c09f | 173 | VERIFY(0 == dsl_dir_open_obj(dp, dd->dd_object, |
34dc7c2f BB |
174 | NULL, cbr, &dd)); |
175 | if (need_rwlock) | |
b128c09f BB |
176 | rw_exit(&dp->dp_config_rwlock); |
177 | /* Leave dir open until this callback is unregistered */ | |
34dc7c2f BB |
178 | return (0); |
179 | } | |
180 | ||
181 | int | |
b128c09f | 182 | dsl_prop_get(const char *dsname, const char *propname, |
34dc7c2f BB |
183 | int intsz, int numints, void *buf, char *setpoint) |
184 | { | |
b128c09f | 185 | dsl_dataset_t *ds; |
34dc7c2f BB |
186 | int err; |
187 | ||
b128c09f | 188 | err = dsl_dataset_hold(dsname, FTAG, &ds); |
34dc7c2f BB |
189 | if (err) |
190 | return (err); | |
34dc7c2f | 191 | |
b128c09f BB |
192 | rw_enter(&ds->ds_dir->dd_pool->dp_config_rwlock, RW_READER); |
193 | err = dsl_prop_get_ds(ds, propname, intsz, numints, buf, setpoint); | |
194 | rw_exit(&ds->ds_dir->dd_pool->dp_config_rwlock); | |
34dc7c2f | 195 | |
b128c09f | 196 | dsl_dataset_rele(ds, FTAG); |
34dc7c2f BB |
197 | return (err); |
198 | } | |
199 | ||
200 | /* | |
201 | * Get the current property value. It may have changed by the time this | |
202 | * function returns, so it is NOT safe to follow up with | |
203 | * dsl_prop_register() and assume that the value has not changed in | |
204 | * between. | |
205 | * | |
206 | * Return 0 on success, ENOENT if ddname is invalid. | |
207 | */ | |
208 | int | |
209 | dsl_prop_get_integer(const char *ddname, const char *propname, | |
210 | uint64_t *valuep, char *setpoint) | |
211 | { | |
212 | return (dsl_prop_get(ddname, propname, 8, 1, valuep, setpoint)); | |
213 | } | |
214 | ||
215 | /* | |
216 | * Unregister this callback. Return 0 on success, ENOENT if ddname is | |
217 | * invalid, ENOMSG if no matching callback registered. | |
218 | */ | |
219 | int | |
220 | dsl_prop_unregister(dsl_dataset_t *ds, const char *propname, | |
221 | dsl_prop_changed_cb_t *callback, void *cbarg) | |
222 | { | |
223 | dsl_dir_t *dd = ds->ds_dir; | |
224 | dsl_prop_cb_record_t *cbr; | |
225 | ||
226 | mutex_enter(&dd->dd_lock); | |
227 | for (cbr = list_head(&dd->dd_prop_cbs); | |
228 | cbr; cbr = list_next(&dd->dd_prop_cbs, cbr)) { | |
229 | if (cbr->cbr_ds == ds && | |
230 | cbr->cbr_func == callback && | |
231 | cbr->cbr_arg == cbarg && | |
232 | strcmp(cbr->cbr_propname, propname) == 0) | |
233 | break; | |
234 | } | |
235 | ||
236 | if (cbr == NULL) { | |
237 | mutex_exit(&dd->dd_lock); | |
238 | return (ENOMSG); | |
239 | } | |
240 | ||
241 | list_remove(&dd->dd_prop_cbs, cbr); | |
242 | mutex_exit(&dd->dd_lock); | |
243 | kmem_free((void*)cbr->cbr_propname, strlen(cbr->cbr_propname)+1); | |
244 | kmem_free(cbr, sizeof (dsl_prop_cb_record_t)); | |
245 | ||
246 | /* Clean up from dsl_prop_register */ | |
247 | dsl_dir_close(dd, cbr); | |
248 | return (0); | |
249 | } | |
250 | ||
251 | /* | |
252 | * Return the number of callbacks that are registered for this dataset. | |
253 | */ | |
254 | int | |
255 | dsl_prop_numcb(dsl_dataset_t *ds) | |
256 | { | |
257 | dsl_dir_t *dd = ds->ds_dir; | |
258 | dsl_prop_cb_record_t *cbr; | |
259 | int num = 0; | |
260 | ||
261 | mutex_enter(&dd->dd_lock); | |
262 | for (cbr = list_head(&dd->dd_prop_cbs); | |
263 | cbr; cbr = list_next(&dd->dd_prop_cbs, cbr)) { | |
264 | if (cbr->cbr_ds == ds) | |
265 | num++; | |
266 | } | |
267 | mutex_exit(&dd->dd_lock); | |
268 | ||
269 | return (num); | |
270 | } | |
271 | ||
272 | static void | |
273 | dsl_prop_changed_notify(dsl_pool_t *dp, uint64_t ddobj, | |
274 | const char *propname, uint64_t value, int first) | |
275 | { | |
276 | dsl_dir_t *dd; | |
277 | dsl_prop_cb_record_t *cbr; | |
278 | objset_t *mos = dp->dp_meta_objset; | |
279 | zap_cursor_t zc; | |
280 | zap_attribute_t *za; | |
281 | int err; | |
b128c09f | 282 | uint64_t dummyval; |
34dc7c2f BB |
283 | |
284 | ASSERT(RW_WRITE_HELD(&dp->dp_config_rwlock)); | |
285 | err = dsl_dir_open_obj(dp, ddobj, NULL, FTAG, &dd); | |
286 | if (err) | |
287 | return; | |
288 | ||
289 | if (!first) { | |
290 | /* | |
291 | * If the prop is set here, then this change is not | |
292 | * being inherited here or below; stop the recursion. | |
293 | */ | |
294 | err = zap_lookup(mos, dd->dd_phys->dd_props_zapobj, propname, | |
b128c09f | 295 | 8, 1, &dummyval); |
34dc7c2f BB |
296 | if (err == 0) { |
297 | dsl_dir_close(dd, FTAG); | |
298 | return; | |
299 | } | |
300 | ASSERT3U(err, ==, ENOENT); | |
301 | } | |
302 | ||
303 | mutex_enter(&dd->dd_lock); | |
b128c09f BB |
304 | for (cbr = list_head(&dd->dd_prop_cbs); cbr; |
305 | cbr = list_next(&dd->dd_prop_cbs, cbr)) { | |
306 | uint64_t propobj = cbr->cbr_ds->ds_phys->ds_props_obj; | |
307 | ||
308 | if (strcmp(cbr->cbr_propname, propname) != 0) | |
309 | continue; | |
310 | ||
311 | /* | |
312 | * If the property is set on this ds, then it is not | |
313 | * inherited here; don't call the callback. | |
314 | */ | |
315 | if (propobj && 0 == zap_lookup(mos, propobj, propname, | |
316 | 8, 1, &dummyval)) | |
317 | continue; | |
318 | ||
319 | cbr->cbr_func(cbr->cbr_arg, value); | |
34dc7c2f BB |
320 | } |
321 | mutex_exit(&dd->dd_lock); | |
322 | ||
323 | za = kmem_alloc(sizeof (zap_attribute_t), KM_SLEEP); | |
324 | for (zap_cursor_init(&zc, mos, | |
325 | dd->dd_phys->dd_child_dir_zapobj); | |
326 | zap_cursor_retrieve(&zc, za) == 0; | |
327 | zap_cursor_advance(&zc)) { | |
328 | dsl_prop_changed_notify(dp, za->za_first_integer, | |
329 | propname, value, FALSE); | |
330 | } | |
331 | kmem_free(za, sizeof (zap_attribute_t)); | |
332 | zap_cursor_fini(&zc); | |
333 | dsl_dir_close(dd, FTAG); | |
334 | } | |
335 | ||
336 | struct prop_set_arg { | |
337 | const char *name; | |
338 | int intsz; | |
339 | int numints; | |
340 | const void *buf; | |
341 | }; | |
342 | ||
343 | ||
344 | static void | |
345 | dsl_prop_set_sync(void *arg1, void *arg2, cred_t *cr, dmu_tx_t *tx) | |
346 | { | |
b128c09f | 347 | dsl_dataset_t *ds = arg1; |
34dc7c2f | 348 | struct prop_set_arg *psa = arg2; |
b128c09f BB |
349 | objset_t *mos = ds->ds_dir->dd_pool->dp_meta_objset; |
350 | uint64_t zapobj, intval; | |
34dc7c2f BB |
351 | int isint; |
352 | char valbuf[32]; | |
353 | char *valstr; | |
354 | ||
355 | isint = (dodefault(psa->name, 8, 1, &intval) == 0); | |
356 | ||
b128c09f BB |
357 | if (dsl_dataset_is_snapshot(ds)) { |
358 | ASSERT(spa_version(ds->ds_dir->dd_pool->dp_spa) >= | |
359 | SPA_VERSION_SNAP_PROPS); | |
360 | if (ds->ds_phys->ds_props_obj == 0) { | |
361 | dmu_buf_will_dirty(ds->ds_dbuf, tx); | |
362 | ds->ds_phys->ds_props_obj = | |
363 | zap_create(mos, | |
364 | DMU_OT_DSL_PROPS, DMU_OT_NONE, 0, tx); | |
365 | } | |
366 | zapobj = ds->ds_phys->ds_props_obj; | |
367 | } else { | |
368 | zapobj = ds->ds_dir->dd_phys->dd_props_zapobj; | |
369 | } | |
370 | ||
34dc7c2f BB |
371 | if (psa->numints == 0) { |
372 | int err = zap_remove(mos, zapobj, psa->name, tx); | |
373 | ASSERT(err == 0 || err == ENOENT); | |
374 | if (isint) { | |
b128c09f | 375 | VERIFY(0 == dsl_prop_get_ds(ds, |
34dc7c2f BB |
376 | psa->name, 8, 1, &intval, NULL)); |
377 | } | |
378 | } else { | |
379 | VERIFY(0 == zap_update(mos, zapobj, psa->name, | |
380 | psa->intsz, psa->numints, psa->buf, tx)); | |
381 | if (isint) | |
382 | intval = *(uint64_t *)psa->buf; | |
383 | } | |
384 | ||
385 | if (isint) { | |
b128c09f BB |
386 | if (dsl_dataset_is_snapshot(ds)) { |
387 | dsl_prop_cb_record_t *cbr; | |
388 | /* | |
389 | * It's a snapshot; nothing can inherit this | |
390 | * property, so just look for callbacks on this | |
391 | * ds here. | |
392 | */ | |
393 | mutex_enter(&ds->ds_dir->dd_lock); | |
394 | for (cbr = list_head(&ds->ds_dir->dd_prop_cbs); cbr; | |
395 | cbr = list_next(&ds->ds_dir->dd_prop_cbs, cbr)) { | |
396 | if (cbr->cbr_ds == ds && | |
397 | strcmp(cbr->cbr_propname, psa->name) == 0) | |
398 | cbr->cbr_func(cbr->cbr_arg, intval); | |
399 | } | |
400 | mutex_exit(&ds->ds_dir->dd_lock); | |
401 | } else { | |
402 | dsl_prop_changed_notify(ds->ds_dir->dd_pool, | |
403 | ds->ds_dir->dd_object, psa->name, intval, TRUE); | |
404 | } | |
34dc7c2f BB |
405 | } |
406 | if (isint) { | |
407 | (void) snprintf(valbuf, sizeof (valbuf), | |
408 | "%lld", (longlong_t)intval); | |
409 | valstr = valbuf; | |
410 | } else { | |
411 | valstr = (char *)psa->buf; | |
412 | } | |
413 | spa_history_internal_log((psa->numints == 0) ? LOG_DS_INHERIT : | |
b128c09f BB |
414 | LOG_DS_PROPSET, ds->ds_dir->dd_pool->dp_spa, tx, cr, |
415 | "%s=%s dataset = %llu", psa->name, valstr, ds->ds_object); | |
34dc7c2f BB |
416 | } |
417 | ||
418 | void | |
419 | dsl_prop_set_uint64_sync(dsl_dir_t *dd, const char *name, uint64_t val, | |
420 | cred_t *cr, dmu_tx_t *tx) | |
421 | { | |
422 | objset_t *mos = dd->dd_pool->dp_meta_objset; | |
423 | uint64_t zapobj = dd->dd_phys->dd_props_zapobj; | |
424 | ||
425 | ASSERT(dmu_tx_is_syncing(tx)); | |
426 | ||
427 | VERIFY(0 == zap_update(mos, zapobj, name, sizeof (val), 1, &val, tx)); | |
428 | ||
429 | dsl_prop_changed_notify(dd->dd_pool, dd->dd_object, name, val, TRUE); | |
430 | ||
431 | spa_history_internal_log(LOG_DS_PROPSET, dd->dd_pool->dp_spa, tx, cr, | |
432 | "%s=%llu dataset = %llu", name, (u_longlong_t)val, | |
433 | dd->dd_phys->dd_head_dataset_obj); | |
434 | } | |
435 | ||
436 | int | |
b128c09f | 437 | dsl_prop_set(const char *dsname, const char *propname, |
34dc7c2f BB |
438 | int intsz, int numints, const void *buf) |
439 | { | |
b128c09f | 440 | dsl_dataset_t *ds; |
34dc7c2f | 441 | int err; |
b128c09f | 442 | struct prop_set_arg psa; |
34dc7c2f BB |
443 | |
444 | /* | |
445 | * We must do these checks before we get to the syncfunc, since | |
446 | * it can't fail. | |
447 | */ | |
448 | if (strlen(propname) >= ZAP_MAXNAMELEN) | |
449 | return (ENAMETOOLONG); | |
450 | if (intsz * numints >= ZAP_MAXVALUELEN) | |
451 | return (E2BIG); | |
452 | ||
b128c09f | 453 | err = dsl_dataset_hold(dsname, FTAG, &ds); |
34dc7c2f BB |
454 | if (err) |
455 | return (err); | |
b128c09f BB |
456 | |
457 | if (dsl_dataset_is_snapshot(ds) && | |
458 | spa_version(ds->ds_dir->dd_pool->dp_spa) < SPA_VERSION_SNAP_PROPS) { | |
459 | dsl_dataset_rele(ds, FTAG); | |
460 | return (ENOTSUP); | |
461 | } | |
462 | ||
463 | psa.name = propname; | |
464 | psa.intsz = intsz; | |
465 | psa.numints = numints; | |
466 | psa.buf = buf; | |
467 | err = dsl_sync_task_do(ds->ds_dir->dd_pool, | |
468 | NULL, dsl_prop_set_sync, ds, &psa, 2); | |
469 | ||
470 | dsl_dataset_rele(ds, FTAG); | |
34dc7c2f BB |
471 | return (err); |
472 | } | |
473 | ||
474 | /* | |
475 | * Iterate over all properties for this dataset and return them in an nvlist. | |
476 | */ | |
477 | int | |
b128c09f | 478 | dsl_prop_get_all(objset_t *os, nvlist_t **nvp, boolean_t local) |
34dc7c2f BB |
479 | { |
480 | dsl_dataset_t *ds = os->os->os_dsl_dataset; | |
481 | dsl_dir_t *dd = ds->ds_dir; | |
b128c09f | 482 | boolean_t snapshot = dsl_dataset_is_snapshot(ds); |
34dc7c2f | 483 | int err = 0; |
b128c09f BB |
484 | dsl_pool_t *dp = dd->dd_pool; |
485 | objset_t *mos = dp->dp_meta_objset; | |
486 | uint64_t propobj = ds->ds_phys->ds_props_obj; | |
34dc7c2f BB |
487 | |
488 | VERIFY(nvlist_alloc(nvp, NV_UNIQUE_NAME, KM_SLEEP) == 0); | |
489 | ||
b128c09f BB |
490 | if (local && snapshot && !propobj) |
491 | return (0); | |
34dc7c2f BB |
492 | |
493 | rw_enter(&dp->dp_config_rwlock, RW_READER); | |
b128c09f | 494 | while (dd != NULL) { |
34dc7c2f BB |
495 | char setpoint[MAXNAMELEN]; |
496 | zap_cursor_t zc; | |
497 | zap_attribute_t za; | |
b128c09f BB |
498 | dsl_dir_t *dd_next; |
499 | ||
500 | if (propobj) { | |
501 | dsl_dataset_name(ds, setpoint); | |
502 | dd_next = dd; | |
503 | } else { | |
504 | dsl_dir_name(dd, setpoint); | |
505 | propobj = dd->dd_phys->dd_props_zapobj; | |
506 | dd_next = dd->dd_parent; | |
507 | } | |
34dc7c2f | 508 | |
b128c09f | 509 | for (zap_cursor_init(&zc, mos, propobj); |
34dc7c2f BB |
510 | (err = zap_cursor_retrieve(&zc, &za)) == 0; |
511 | zap_cursor_advance(&zc)) { | |
512 | nvlist_t *propval; | |
b128c09f BB |
513 | zfs_prop_t prop = zfs_name_to_prop(za.za_name); |
514 | ||
515 | /* Skip non-inheritable properties. */ | |
516 | if (prop != ZPROP_INVAL && | |
517 | !zfs_prop_inheritable(prop) && | |
518 | (dd != ds->ds_dir || (snapshot && dd != dd_next))) | |
34dc7c2f BB |
519 | continue; |
520 | ||
b128c09f BB |
521 | /* Skip properties not valid for this type. */ |
522 | if (snapshot && prop != ZPROP_INVAL && | |
34dc7c2f BB |
523 | !zfs_prop_valid_for_type(prop, ZFS_TYPE_SNAPSHOT)) |
524 | continue; | |
525 | ||
b128c09f | 526 | /* Skip properties already defined */ |
34dc7c2f BB |
527 | if (nvlist_lookup_nvlist(*nvp, za.za_name, |
528 | &propval) == 0) | |
529 | continue; | |
530 | ||
531 | VERIFY(nvlist_alloc(&propval, NV_UNIQUE_NAME, | |
532 | KM_SLEEP) == 0); | |
533 | if (za.za_integer_length == 1) { | |
534 | /* | |
535 | * String property | |
536 | */ | |
537 | char *tmp = kmem_alloc(za.za_num_integers, | |
538 | KM_SLEEP); | |
b128c09f BB |
539 | err = zap_lookup(mos, propobj, |
540 | za.za_name, 1, za.za_num_integers, tmp); | |
34dc7c2f BB |
541 | if (err != 0) { |
542 | kmem_free(tmp, za.za_num_integers); | |
543 | break; | |
544 | } | |
545 | VERIFY(nvlist_add_string(propval, ZPROP_VALUE, | |
546 | tmp) == 0); | |
547 | kmem_free(tmp, za.za_num_integers); | |
548 | } else { | |
549 | /* | |
550 | * Integer property | |
551 | */ | |
552 | ASSERT(za.za_integer_length == 8); | |
553 | (void) nvlist_add_uint64(propval, ZPROP_VALUE, | |
554 | za.za_first_integer); | |
555 | } | |
556 | ||
557 | VERIFY(nvlist_add_string(propval, ZPROP_SOURCE, | |
558 | setpoint) == 0); | |
559 | VERIFY(nvlist_add_nvlist(*nvp, za.za_name, | |
560 | propval) == 0); | |
561 | nvlist_free(propval); | |
562 | } | |
563 | zap_cursor_fini(&zc); | |
564 | ||
565 | if (err != ENOENT) | |
566 | break; | |
567 | err = 0; | |
b128c09f BB |
568 | /* |
569 | * If we are just after the props that have been set | |
570 | * locally, then we are done after the first iteration. | |
571 | */ | |
572 | if (local) | |
573 | break; | |
574 | dd = dd_next; | |
575 | propobj = 0; | |
34dc7c2f BB |
576 | } |
577 | rw_exit(&dp->dp_config_rwlock); | |
578 | ||
579 | return (err); | |
580 | } | |
581 | ||
582 | void | |
583 | dsl_prop_nvlist_add_uint64(nvlist_t *nv, zfs_prop_t prop, uint64_t value) | |
584 | { | |
585 | nvlist_t *propval; | |
586 | ||
587 | VERIFY(nvlist_alloc(&propval, NV_UNIQUE_NAME, KM_SLEEP) == 0); | |
588 | VERIFY(nvlist_add_uint64(propval, ZPROP_VALUE, value) == 0); | |
589 | VERIFY(nvlist_add_nvlist(nv, zfs_prop_to_name(prop), propval) == 0); | |
590 | nvlist_free(propval); | |
591 | } | |
592 | ||
593 | void | |
594 | dsl_prop_nvlist_add_string(nvlist_t *nv, zfs_prop_t prop, const char *value) | |
595 | { | |
596 | nvlist_t *propval; | |
597 | ||
598 | VERIFY(nvlist_alloc(&propval, NV_UNIQUE_NAME, KM_SLEEP) == 0); | |
599 | VERIFY(nvlist_add_string(propval, ZPROP_VALUE, value) == 0); | |
600 | VERIFY(nvlist_add_nvlist(nv, zfs_prop_to_name(prop), propval) == 0); | |
601 | nvlist_free(propval); | |
602 | } |