]>
Commit | Line | Data |
---|---|---|
03916905 PD |
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 | |
1d3ba0bf | 9 | * or https://opensource.org/licenses/CDDL-1.0. |
03916905 PD |
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 (c) 2005, 2010, Oracle and/or its affiliates. All rights reserved. | |
23 | * Copyright 2011 Nexenta Systems, Inc. All rights reserved. | |
196bee4c | 24 | * Copyright (c) 2011, 2020 by Delphix. All rights reserved. |
03916905 PD |
25 | * Copyright (c) 2014, Joyent, Inc. All rights reserved. |
26 | * Copyright 2014 HybridCluster. All rights reserved. | |
d8d418ff | 27 | * Copyright (c) 2018, loli10K <ezomori.nozomu@gmail.com>. All rights reserved. |
10b3c7f5 MN |
28 | * Copyright (c) 2019, Klara Inc. |
29 | * Copyright (c) 2019, Allan Jude | |
e8cf3a4f AP |
30 | * Copyright (c) 2019 Datto Inc. |
31 | * Copyright (c) 2022 Axcient. | |
03916905 PD |
32 | */ |
33 | ||
73968def | 34 | #include <sys/arc.h> |
e8cf3a4f | 35 | #include <sys/spa_impl.h> |
03916905 PD |
36 | #include <sys/dmu.h> |
37 | #include <sys/dmu_impl.h> | |
30af21b0 PD |
38 | #include <sys/dmu_send.h> |
39 | #include <sys/dmu_recv.h> | |
03916905 PD |
40 | #include <sys/dmu_tx.h> |
41 | #include <sys/dbuf.h> | |
42 | #include <sys/dnode.h> | |
43 | #include <sys/zfs_context.h> | |
44 | #include <sys/dmu_objset.h> | |
45 | #include <sys/dmu_traverse.h> | |
46 | #include <sys/dsl_dataset.h> | |
47 | #include <sys/dsl_dir.h> | |
48 | #include <sys/dsl_prop.h> | |
49 | #include <sys/dsl_pool.h> | |
50 | #include <sys/dsl_synctask.h> | |
03916905 PD |
51 | #include <sys/zfs_ioctl.h> |
52 | #include <sys/zap.h> | |
30af21b0 | 53 | #include <sys/zvol.h> |
03916905 PD |
54 | #include <sys/zio_checksum.h> |
55 | #include <sys/zfs_znode.h> | |
56 | #include <zfs_fletcher.h> | |
57 | #include <sys/avl.h> | |
58 | #include <sys/ddt.h> | |
59 | #include <sys/zfs_onexit.h> | |
03916905 PD |
60 | #include <sys/dsl_destroy.h> |
61 | #include <sys/blkptr.h> | |
62 | #include <sys/dsl_bookmark.h> | |
63 | #include <sys/zfeature.h> | |
64 | #include <sys/bqueue.h> | |
30af21b0 PD |
65 | #include <sys/objlist.h> |
66 | #ifdef _KERNEL | |
67 | #include <sys/zfs_vfsops.h> | |
68 | #endif | |
da92d5cb | 69 | #include <sys/zfs_file.h> |
03916905 | 70 | |
fdc2d303 RY |
71 | static uint_t zfs_recv_queue_length = SPA_MAXBLOCKSIZE; |
72 | static uint_t zfs_recv_queue_ff = 20; | |
73 | static uint_t zfs_recv_write_batch_size = 1024 * 1024; | |
e8cf3a4f | 74 | static int zfs_recv_best_effort_corrective = 0; |
03916905 | 75 | |
a926aab9 | 76 | static const void *const dmu_recv_tag = "dmu_recv_tag"; |
18168da7 | 77 | const char *const recv_clone_name = "%recv"; |
03916905 | 78 | |
37a27b43 DH |
79 | typedef enum { |
80 | ORNS_NO, | |
81 | ORNS_YES, | |
82 | ORNS_MAYBE | |
83 | } or_need_sync_t; | |
84 | ||
30af21b0 PD |
85 | static int receive_read_payload_and_next_header(dmu_recv_cookie_t *ra, int len, |
86 | void *buf); | |
87 | ||
88 | struct receive_record_arg { | |
89 | dmu_replay_record_t header; | |
90 | void *payload; /* Pointer to a buffer containing the payload */ | |
91 | /* | |
ba67d821 | 92 | * If the record is a WRITE or SPILL, pointer to the abd containing the |
30af21b0 PD |
93 | * payload. |
94 | */ | |
ba67d821 | 95 | abd_t *abd; |
30af21b0 PD |
96 | int payload_size; |
97 | uint64_t bytes_read; /* bytes read from stream when record created */ | |
98 | boolean_t eos_marker; /* Marks the end of the stream */ | |
99 | bqueue_node_t node; | |
100 | }; | |
101 | ||
102 | struct receive_writer_arg { | |
103 | objset_t *os; | |
104 | boolean_t byteswap; | |
105 | bqueue_t q; | |
106 | ||
107 | /* | |
ba67d821 MA |
108 | * These three members are used to signal to the main thread when |
109 | * we're done. | |
30af21b0 PD |
110 | */ |
111 | kmutex_t mutex; | |
112 | kcondvar_t cv; | |
113 | boolean_t done; | |
114 | ||
115 | int err; | |
e8cf3a4f AP |
116 | const char *tofs; |
117 | boolean_t heal; | |
30af21b0 PD |
118 | boolean_t resumable; |
119 | boolean_t raw; /* DMU_BACKUP_FEATURE_RAW set */ | |
120 | boolean_t spill; /* DRR_FLAG_SPILL_BLOCK set */ | |
7bcb7f08 | 121 | boolean_t full; /* this is a full send stream */ |
30af21b0 PD |
122 | uint64_t last_object; |
123 | uint64_t last_offset; | |
124 | uint64_t max_object; /* highest object ID referenced in stream */ | |
125 | uint64_t bytes_read; /* bytes read when current record created */ | |
126 | ||
7261fc2e MA |
127 | list_t write_batch; |
128 | ||
30af21b0 PD |
129 | /* Encryption parameters for the last received DRR_OBJECT_RANGE */ |
130 | boolean_t or_crypt_params_present; | |
131 | uint64_t or_firstobj; | |
132 | uint64_t or_numslots; | |
133 | uint8_t or_salt[ZIO_DATA_SALT_LEN]; | |
134 | uint8_t or_iv[ZIO_DATA_IV_LEN]; | |
135 | uint8_t or_mac[ZIO_DATA_MAC_LEN]; | |
136 | boolean_t or_byteorder; | |
e8cf3a4f | 137 | zio_t *heal_pio; |
37a27b43 DH |
138 | |
139 | /* Keep track of DRR_FREEOBJECTS right after DRR_OBJECT_RANGE */ | |
140 | or_need_sync_t or_need_sync; | |
30af21b0 PD |
141 | }; |
142 | ||
03916905 PD |
143 | typedef struct dmu_recv_begin_arg { |
144 | const char *drba_origin; | |
145 | dmu_recv_cookie_t *drba_cookie; | |
146 | cred_t *drba_cred; | |
e59a377a | 147 | proc_t *drba_proc; |
03916905 | 148 | dsl_crypto_params_t *drba_dcp; |
03916905 PD |
149 | } dmu_recv_begin_arg_t; |
150 | ||
30af21b0 PD |
151 | static void |
152 | byteswap_record(dmu_replay_record_t *drr) | |
153 | { | |
154 | #define DO64(X) (drr->drr_u.X = BSWAP_64(drr->drr_u.X)) | |
155 | #define DO32(X) (drr->drr_u.X = BSWAP_32(drr->drr_u.X)) | |
156 | drr->drr_type = BSWAP_32(drr->drr_type); | |
157 | drr->drr_payloadlen = BSWAP_32(drr->drr_payloadlen); | |
158 | ||
159 | switch (drr->drr_type) { | |
160 | case DRR_BEGIN: | |
161 | DO64(drr_begin.drr_magic); | |
162 | DO64(drr_begin.drr_versioninfo); | |
163 | DO64(drr_begin.drr_creation_time); | |
164 | DO32(drr_begin.drr_type); | |
165 | DO32(drr_begin.drr_flags); | |
166 | DO64(drr_begin.drr_toguid); | |
167 | DO64(drr_begin.drr_fromguid); | |
168 | break; | |
169 | case DRR_OBJECT: | |
170 | DO64(drr_object.drr_object); | |
171 | DO32(drr_object.drr_type); | |
172 | DO32(drr_object.drr_bonustype); | |
173 | DO32(drr_object.drr_blksz); | |
174 | DO32(drr_object.drr_bonuslen); | |
175 | DO32(drr_object.drr_raw_bonuslen); | |
176 | DO64(drr_object.drr_toguid); | |
177 | DO64(drr_object.drr_maxblkid); | |
178 | break; | |
179 | case DRR_FREEOBJECTS: | |
180 | DO64(drr_freeobjects.drr_firstobj); | |
181 | DO64(drr_freeobjects.drr_numobjs); | |
182 | DO64(drr_freeobjects.drr_toguid); | |
183 | break; | |
184 | case DRR_WRITE: | |
185 | DO64(drr_write.drr_object); | |
186 | DO32(drr_write.drr_type); | |
187 | DO64(drr_write.drr_offset); | |
188 | DO64(drr_write.drr_logical_size); | |
189 | DO64(drr_write.drr_toguid); | |
190 | ZIO_CHECKSUM_BSWAP(&drr->drr_u.drr_write.drr_key.ddk_cksum); | |
191 | DO64(drr_write.drr_key.ddk_prop); | |
192 | DO64(drr_write.drr_compressed_size); | |
193 | break; | |
30af21b0 PD |
194 | case DRR_WRITE_EMBEDDED: |
195 | DO64(drr_write_embedded.drr_object); | |
196 | DO64(drr_write_embedded.drr_offset); | |
197 | DO64(drr_write_embedded.drr_length); | |
198 | DO64(drr_write_embedded.drr_toguid); | |
199 | DO32(drr_write_embedded.drr_lsize); | |
200 | DO32(drr_write_embedded.drr_psize); | |
201 | break; | |
202 | case DRR_FREE: | |
203 | DO64(drr_free.drr_object); | |
204 | DO64(drr_free.drr_offset); | |
205 | DO64(drr_free.drr_length); | |
206 | DO64(drr_free.drr_toguid); | |
207 | break; | |
208 | case DRR_SPILL: | |
209 | DO64(drr_spill.drr_object); | |
210 | DO64(drr_spill.drr_length); | |
211 | DO64(drr_spill.drr_toguid); | |
212 | DO64(drr_spill.drr_compressed_size); | |
213 | DO32(drr_spill.drr_type); | |
214 | break; | |
215 | case DRR_OBJECT_RANGE: | |
216 | DO64(drr_object_range.drr_firstobj); | |
217 | DO64(drr_object_range.drr_numslots); | |
218 | DO64(drr_object_range.drr_toguid); | |
219 | break; | |
220 | case DRR_REDACT: | |
221 | DO64(drr_redact.drr_object); | |
222 | DO64(drr_redact.drr_offset); | |
223 | DO64(drr_redact.drr_length); | |
224 | DO64(drr_redact.drr_toguid); | |
225 | break; | |
226 | case DRR_END: | |
227 | DO64(drr_end.drr_toguid); | |
228 | ZIO_CHECKSUM_BSWAP(&drr->drr_u.drr_end.drr_checksum); | |
229 | break; | |
230 | default: | |
231 | break; | |
232 | } | |
233 | ||
234 | if (drr->drr_type != DRR_BEGIN) { | |
235 | ZIO_CHECKSUM_BSWAP(&drr->drr_u.drr_checksum.drr_checksum); | |
236 | } | |
237 | ||
238 | #undef DO64 | |
239 | #undef DO32 | |
240 | } | |
241 | ||
242 | static boolean_t | |
243 | redact_snaps_contains(uint64_t *snaps, uint64_t num_snaps, uint64_t guid) | |
244 | { | |
245 | for (int i = 0; i < num_snaps; i++) { | |
246 | if (snaps[i] == guid) | |
247 | return (B_TRUE); | |
248 | } | |
249 | return (B_FALSE); | |
250 | } | |
251 | ||
252 | /* | |
253 | * Check that the new stream we're trying to receive is redacted with respect to | |
254 | * a subset of the snapshots that the origin was redacted with respect to. For | |
255 | * the reasons behind this, see the man page on redacted zfs sends and receives. | |
256 | */ | |
257 | static boolean_t | |
258 | compatible_redact_snaps(uint64_t *origin_snaps, uint64_t origin_num_snaps, | |
259 | uint64_t *redact_snaps, uint64_t num_redact_snaps) | |
260 | { | |
261 | /* | |
262 | * Short circuit the comparison; if we are redacted with respect to | |
263 | * more snapshots than the origin, we can't be redacted with respect | |
264 | * to a subset. | |
265 | */ | |
266 | if (num_redact_snaps > origin_num_snaps) { | |
267 | return (B_FALSE); | |
268 | } | |
269 | ||
270 | for (int i = 0; i < num_redact_snaps; i++) { | |
271 | if (!redact_snaps_contains(origin_snaps, origin_num_snaps, | |
272 | redact_snaps[i])) { | |
273 | return (B_FALSE); | |
274 | } | |
275 | } | |
276 | return (B_TRUE); | |
277 | } | |
278 | ||
279 | static boolean_t | |
280 | redact_check(dmu_recv_begin_arg_t *drba, dsl_dataset_t *origin) | |
281 | { | |
282 | uint64_t *origin_snaps; | |
283 | uint64_t origin_num_snaps; | |
284 | dmu_recv_cookie_t *drc = drba->drba_cookie; | |
285 | struct drr_begin *drrb = drc->drc_drrb; | |
286 | int featureflags = DMU_GET_FEATUREFLAGS(drrb->drr_versioninfo); | |
287 | int err = 0; | |
288 | boolean_t ret = B_TRUE; | |
289 | uint64_t *redact_snaps; | |
290 | uint_t numredactsnaps; | |
291 | ||
292 | /* | |
293 | * If this is a full send stream, we're safe no matter what. | |
294 | */ | |
295 | if (drrb->drr_fromguid == 0) | |
296 | return (ret); | |
297 | ||
298 | VERIFY(dsl_dataset_get_uint64_array_feature(origin, | |
299 | SPA_FEATURE_REDACTED_DATASETS, &origin_num_snaps, &origin_snaps)); | |
300 | ||
301 | if (nvlist_lookup_uint64_array(drc->drc_begin_nvl, | |
302 | BEGINNV_REDACT_FROM_SNAPS, &redact_snaps, &numredactsnaps) == | |
303 | 0) { | |
304 | /* | |
305 | * If the send stream was sent from the redaction bookmark or | |
306 | * the redacted version of the dataset, then we're safe. Verify | |
307 | * that this is from the a compatible redaction bookmark or | |
308 | * redacted dataset. | |
309 | */ | |
310 | if (!compatible_redact_snaps(origin_snaps, origin_num_snaps, | |
311 | redact_snaps, numredactsnaps)) { | |
312 | err = EINVAL; | |
313 | } | |
314 | } else if (featureflags & DMU_BACKUP_FEATURE_REDACTED) { | |
315 | /* | |
316 | * If the stream is redacted, it must be redacted with respect | |
317 | * to a subset of what the origin is redacted with respect to. | |
318 | * See case number 2 in the zfs man page section on redacted zfs | |
319 | * send. | |
320 | */ | |
321 | err = nvlist_lookup_uint64_array(drc->drc_begin_nvl, | |
322 | BEGINNV_REDACT_SNAPS, &redact_snaps, &numredactsnaps); | |
323 | ||
324 | if (err != 0 || !compatible_redact_snaps(origin_snaps, | |
325 | origin_num_snaps, redact_snaps, numredactsnaps)) { | |
326 | err = EINVAL; | |
327 | } | |
328 | } else if (!redact_snaps_contains(origin_snaps, origin_num_snaps, | |
329 | drrb->drr_toguid)) { | |
330 | /* | |
331 | * If the stream isn't redacted but the origin is, this must be | |
332 | * one of the snapshots the origin is redacted with respect to. | |
333 | * See case number 1 in the zfs man page section on redacted zfs | |
334 | * send. | |
335 | */ | |
336 | err = EINVAL; | |
337 | } | |
338 | ||
339 | if (err != 0) | |
340 | ret = B_FALSE; | |
341 | return (ret); | |
342 | } | |
343 | ||
7bcb7f08 MA |
344 | /* |
345 | * If we previously received a stream with --large-block, we don't support | |
346 | * receiving an incremental on top of it without --large-block. This avoids | |
347 | * forcing a read-modify-write or trying to re-aggregate a string of WRITE | |
348 | * records. | |
349 | */ | |
350 | static int | |
351 | recv_check_large_blocks(dsl_dataset_t *ds, uint64_t featureflags) | |
352 | { | |
353 | if (dsl_dataset_feature_is_active(ds, SPA_FEATURE_LARGE_BLOCKS) && | |
354 | !(featureflags & DMU_BACKUP_FEATURE_LARGE_BLOCKS)) | |
355 | return (SET_ERROR(ZFS_ERR_STREAM_LARGE_BLOCK_MISMATCH)); | |
356 | return (0); | |
357 | } | |
358 | ||
03916905 PD |
359 | static int |
360 | recv_begin_check_existing_impl(dmu_recv_begin_arg_t *drba, dsl_dataset_t *ds, | |
361 | uint64_t fromguid, uint64_t featureflags) | |
362 | { | |
e8cf3a4f | 363 | uint64_t obj; |
d8d418ff | 364 | uint64_t children; |
03916905 | 365 | int error; |
e8cf3a4f | 366 | dsl_dataset_t *snap; |
03916905 PD |
367 | dsl_pool_t *dp = ds->ds_dir->dd_pool; |
368 | boolean_t encrypted = ds->ds_dir->dd_crypto_obj != 0; | |
369 | boolean_t raw = (featureflags & DMU_BACKUP_FEATURE_RAW) != 0; | |
370 | boolean_t embed = (featureflags & DMU_BACKUP_FEATURE_EMBED_DATA) != 0; | |
371 | ||
ebeb6f23 | 372 | /* Temporary clone name must not exist. */ |
03916905 PD |
373 | error = zap_lookup(dp->dp_meta_objset, |
374 | dsl_dir_phys(ds->ds_dir)->dd_child_dir_zapobj, recv_clone_name, | |
e8cf3a4f | 375 | 8, 1, &obj); |
03916905 | 376 | if (error != ENOENT) |
30af21b0 | 377 | return (error == 0 ? SET_ERROR(EBUSY) : error); |
03916905 | 378 | |
ebeb6f23 AG |
379 | /* Resume state must not be set. */ |
380 | if (dsl_dataset_has_resume_receive_state(ds)) | |
381 | return (SET_ERROR(EBUSY)); | |
382 | ||
e8cf3a4f | 383 | /* New snapshot name must not exist if we're not healing it. */ |
03916905 PD |
384 | error = zap_lookup(dp->dp_meta_objset, |
385 | dsl_dataset_phys(ds)->ds_snapnames_zapobj, | |
e8cf3a4f AP |
386 | drba->drba_cookie->drc_tosnap, 8, 1, &obj); |
387 | if (drba->drba_cookie->drc_heal) { | |
388 | if (error != 0) | |
389 | return (error); | |
390 | } else if (error != ENOENT) { | |
30af21b0 | 391 | return (error == 0 ? SET_ERROR(EEXIST) : error); |
e8cf3a4f | 392 | } |
03916905 | 393 | |
ebeb6f23 | 394 | /* Must not have children if receiving a ZVOL. */ |
d8d418ff | 395 | error = zap_count(dp->dp_meta_objset, |
396 | dsl_dir_phys(ds->ds_dir)->dd_child_dir_zapobj, &children); | |
397 | if (error != 0) | |
398 | return (error); | |
399 | if (drba->drba_cookie->drc_drrb->drr_type != DMU_OST_ZFS && | |
400 | children > 0) | |
401 | return (SET_ERROR(ZFS_ERR_WRONG_PARENT)); | |
402 | ||
03916905 PD |
403 | /* |
404 | * Check snapshot limit before receiving. We'll recheck again at the | |
405 | * end, but might as well abort before receiving if we're already over | |
406 | * the limit. | |
407 | * | |
408 | * Note that we do not check the file system limit with | |
409 | * dsl_dir_fscount_check because the temporary %clones don't count | |
410 | * against that limit. | |
411 | */ | |
412 | error = dsl_fs_ss_limit_check(ds->ds_dir, 1, ZFS_PROP_SNAPSHOT_LIMIT, | |
e59a377a | 413 | NULL, drba->drba_cred, drba->drba_proc); |
03916905 PD |
414 | if (error != 0) |
415 | return (error); | |
416 | ||
e8cf3a4f AP |
417 | if (drba->drba_cookie->drc_heal) { |
418 | /* Encryption is incompatible with embedded data. */ | |
419 | if (encrypted && embed) | |
420 | return (SET_ERROR(EINVAL)); | |
421 | ||
422 | /* Healing is not supported when in 'force' mode. */ | |
423 | if (drba->drba_cookie->drc_force) | |
424 | return (SET_ERROR(EINVAL)); | |
425 | ||
426 | /* Must have keys loaded if doing encrypted non-raw recv. */ | |
427 | if (encrypted && !raw) { | |
428 | if (spa_keystore_lookup_key(dp->dp_spa, ds->ds_object, | |
429 | NULL, NULL) != 0) | |
430 | return (SET_ERROR(EACCES)); | |
431 | } | |
432 | ||
433 | error = dsl_dataset_hold_obj(dp, obj, FTAG, &snap); | |
434 | if (error != 0) | |
435 | return (error); | |
436 | ||
437 | /* | |
438 | * When not doing best effort corrective recv healing can only | |
439 | * be done if the send stream is for the same snapshot as the | |
440 | * one we are trying to heal. | |
441 | */ | |
442 | if (zfs_recv_best_effort_corrective == 0 && | |
443 | drba->drba_cookie->drc_drrb->drr_toguid != | |
444 | dsl_dataset_phys(snap)->ds_guid) { | |
445 | dsl_dataset_rele(snap, FTAG); | |
446 | return (SET_ERROR(ENOTSUP)); | |
447 | } | |
448 | dsl_dataset_rele(snap, FTAG); | |
449 | } else if (fromguid != 0) { | |
450 | /* Sanity check the incremental recv */ | |
03916905 PD |
451 | uint64_t obj = dsl_dataset_phys(ds)->ds_prev_snap_obj; |
452 | ||
30af21b0 | 453 | /* Can't perform a raw receive on top of a non-raw receive */ |
03916905 PD |
454 | if (!encrypted && raw) |
455 | return (SET_ERROR(EINVAL)); | |
456 | ||
457 | /* Encryption is incompatible with embedded data */ | |
458 | if (encrypted && embed) | |
459 | return (SET_ERROR(EINVAL)); | |
460 | ||
461 | /* Find snapshot in this dir that matches fromguid. */ | |
462 | while (obj != 0) { | |
463 | error = dsl_dataset_hold_obj(dp, obj, FTAG, | |
464 | &snap); | |
465 | if (error != 0) | |
466 | return (SET_ERROR(ENODEV)); | |
467 | if (snap->ds_dir != ds->ds_dir) { | |
468 | dsl_dataset_rele(snap, FTAG); | |
469 | return (SET_ERROR(ENODEV)); | |
470 | } | |
471 | if (dsl_dataset_phys(snap)->ds_guid == fromguid) | |
472 | break; | |
473 | obj = dsl_dataset_phys(snap)->ds_prev_snap_obj; | |
474 | dsl_dataset_rele(snap, FTAG); | |
475 | } | |
476 | if (obj == 0) | |
477 | return (SET_ERROR(ENODEV)); | |
478 | ||
479 | if (drba->drba_cookie->drc_force) { | |
f00ab3f2 | 480 | drba->drba_cookie->drc_fromsnapobj = obj; |
03916905 PD |
481 | } else { |
482 | /* | |
483 | * If we are not forcing, there must be no | |
c08c30ed TC |
484 | * changes since fromsnap. Raw sends have an |
485 | * additional constraint that requires that | |
486 | * no "noop" snapshots exist between fromsnap | |
487 | * and tosnap for the IVset checking code to | |
488 | * work properly. | |
03916905 | 489 | */ |
c08c30ed TC |
490 | if (dsl_dataset_modified_since_snap(ds, snap) || |
491 | (raw && | |
492 | dsl_dataset_phys(ds)->ds_prev_snap_obj != | |
493 | snap->ds_object)) { | |
03916905 PD |
494 | dsl_dataset_rele(snap, FTAG); |
495 | return (SET_ERROR(ETXTBSY)); | |
496 | } | |
f00ab3f2 TC |
497 | drba->drba_cookie->drc_fromsnapobj = |
498 | ds->ds_prev->ds_object; | |
03916905 PD |
499 | } |
500 | ||
30af21b0 PD |
501 | if (dsl_dataset_feature_is_active(snap, |
502 | SPA_FEATURE_REDACTED_DATASETS) && !redact_check(drba, | |
503 | snap)) { | |
504 | dsl_dataset_rele(snap, FTAG); | |
505 | return (SET_ERROR(EINVAL)); | |
506 | } | |
507 | ||
7bcb7f08 MA |
508 | error = recv_check_large_blocks(snap, featureflags); |
509 | if (error != 0) { | |
510 | dsl_dataset_rele(snap, FTAG); | |
511 | return (error); | |
512 | } | |
513 | ||
03916905 PD |
514 | dsl_dataset_rele(snap, FTAG); |
515 | } else { | |
e8cf3a4f | 516 | /* If full and not healing then must be forced. */ |
03916905 PD |
517 | if (!drba->drba_cookie->drc_force) |
518 | return (SET_ERROR(EEXIST)); | |
519 | ||
520 | /* | |
521 | * We don't support using zfs recv -F to blow away | |
522 | * encrypted filesystems. This would require the | |
523 | * dsl dir to point to the old encryption key and | |
524 | * the new one at the same time during the receive. | |
525 | */ | |
526 | if ((!encrypted && raw) || encrypted) | |
527 | return (SET_ERROR(EINVAL)); | |
528 | ||
529 | /* | |
530 | * Perform the same encryption checks we would if | |
531 | * we were creating a new dataset from scratch. | |
532 | */ | |
533 | if (!raw) { | |
534 | boolean_t will_encrypt; | |
535 | ||
536 | error = dmu_objset_create_crypt_check( | |
537 | ds->ds_dir->dd_parent, drba->drba_dcp, | |
538 | &will_encrypt); | |
539 | if (error != 0) | |
540 | return (error); | |
541 | ||
542 | if (will_encrypt && embed) | |
543 | return (SET_ERROR(EINVAL)); | |
544 | } | |
03916905 PD |
545 | } |
546 | ||
547 | return (0); | |
03916905 PD |
548 | } |
549 | ||
30af21b0 PD |
550 | /* |
551 | * Check that any feature flags used in the data stream we're receiving are | |
552 | * supported by the pool we are receiving into. | |
553 | * | |
554 | * Note that some of the features we explicitly check here have additional | |
555 | * (implicit) features they depend on, but those dependencies are enforced | |
556 | * through the zfeature_register() calls declaring the features that we | |
557 | * explicitly check. | |
558 | */ | |
559 | static int | |
560 | recv_begin_check_feature_flags_impl(uint64_t featureflags, spa_t *spa) | |
561 | { | |
562 | /* | |
563 | * Check if there are any unsupported feature flags. | |
564 | */ | |
565 | if (!DMU_STREAM_SUPPORTED(featureflags)) { | |
566 | return (SET_ERROR(ZFS_ERR_UNKNOWN_SEND_STREAM_FEATURE)); | |
567 | } | |
568 | ||
569 | /* Verify pool version supports SA if SA_SPILL feature set */ | |
570 | if ((featureflags & DMU_BACKUP_FEATURE_SA_SPILL) && | |
571 | spa_version(spa) < SPA_VERSION_SA) | |
572 | return (SET_ERROR(ENOTSUP)); | |
573 | ||
574 | /* | |
10b3c7f5 MN |
575 | * LZ4 compressed, ZSTD compressed, embedded, mooched, large blocks, |
576 | * and large_dnodes in the stream can only be used if those pool | |
577 | * features are enabled because we don't attempt to decompress / | |
578 | * un-embed / un-mooch / split up the blocks / dnodes during the | |
579 | * receive process. | |
30af21b0 PD |
580 | */ |
581 | if ((featureflags & DMU_BACKUP_FEATURE_LZ4) && | |
582 | !spa_feature_is_enabled(spa, SPA_FEATURE_LZ4_COMPRESS)) | |
583 | return (SET_ERROR(ENOTSUP)); | |
10b3c7f5 MN |
584 | if ((featureflags & DMU_BACKUP_FEATURE_ZSTD) && |
585 | !spa_feature_is_enabled(spa, SPA_FEATURE_ZSTD_COMPRESS)) | |
586 | return (SET_ERROR(ENOTSUP)); | |
30af21b0 PD |
587 | if ((featureflags & DMU_BACKUP_FEATURE_EMBED_DATA) && |
588 | !spa_feature_is_enabled(spa, SPA_FEATURE_EMBEDDED_DATA)) | |
589 | return (SET_ERROR(ENOTSUP)); | |
590 | if ((featureflags & DMU_BACKUP_FEATURE_LARGE_BLOCKS) && | |
591 | !spa_feature_is_enabled(spa, SPA_FEATURE_LARGE_BLOCKS)) | |
592 | return (SET_ERROR(ENOTSUP)); | |
593 | if ((featureflags & DMU_BACKUP_FEATURE_LARGE_DNODE) && | |
594 | !spa_feature_is_enabled(spa, SPA_FEATURE_LARGE_DNODE)) | |
595 | return (SET_ERROR(ENOTSUP)); | |
596 | ||
597 | /* | |
598 | * Receiving redacted streams requires that redacted datasets are | |
599 | * enabled. | |
600 | */ | |
601 | if ((featureflags & DMU_BACKUP_FEATURE_REDACTED) && | |
602 | !spa_feature_is_enabled(spa, SPA_FEATURE_REDACTED_DATASETS)) | |
603 | return (SET_ERROR(ENOTSUP)); | |
604 | ||
605 | return (0); | |
606 | } | |
607 | ||
03916905 PD |
608 | static int |
609 | dmu_recv_begin_check(void *arg, dmu_tx_t *tx) | |
610 | { | |
611 | dmu_recv_begin_arg_t *drba = arg; | |
612 | dsl_pool_t *dp = dmu_tx_pool(tx); | |
613 | struct drr_begin *drrb = drba->drba_cookie->drc_drrb; | |
614 | uint64_t fromguid = drrb->drr_fromguid; | |
615 | int flags = drrb->drr_flags; | |
40ab927a | 616 | ds_hold_flags_t dsflags = DS_HOLD_FLAG_NONE; |
03916905 | 617 | int error; |
30af21b0 | 618 | uint64_t featureflags = drba->drba_cookie->drc_featureflags; |
03916905 PD |
619 | dsl_dataset_t *ds; |
620 | const char *tofs = drba->drba_cookie->drc_tofs; | |
621 | ||
622 | /* already checked */ | |
623 | ASSERT3U(drrb->drr_magic, ==, DMU_BACKUP_MAGIC); | |
624 | ASSERT(!(featureflags & DMU_BACKUP_FEATURE_RESUMING)); | |
625 | ||
626 | if (DMU_GET_STREAM_HDRTYPE(drrb->drr_versioninfo) == | |
627 | DMU_COMPOUNDSTREAM || | |
628 | drrb->drr_type >= DMU_OST_NUMTYPES || | |
629 | ((flags & DRR_FLAG_CLONE) && drba->drba_origin == NULL)) | |
630 | return (SET_ERROR(EINVAL)); | |
631 | ||
30af21b0 PD |
632 | error = recv_begin_check_feature_flags_impl(featureflags, dp->dp_spa); |
633 | if (error != 0) | |
634 | return (error); | |
03916905 | 635 | |
30af21b0 | 636 | /* Resumable receives require extensible datasets */ |
03916905 PD |
637 | if (drba->drba_cookie->drc_resumable && |
638 | !spa_feature_is_enabled(dp->dp_spa, SPA_FEATURE_EXTENSIBLE_DATASET)) | |
639 | return (SET_ERROR(ENOTSUP)); | |
640 | ||
03916905 PD |
641 | if (featureflags & DMU_BACKUP_FEATURE_RAW) { |
642 | /* raw receives require the encryption feature */ | |
643 | if (!spa_feature_is_enabled(dp->dp_spa, SPA_FEATURE_ENCRYPTION)) | |
644 | return (SET_ERROR(ENOTSUP)); | |
645 | ||
646 | /* embedded data is incompatible with encryption and raw recv */ | |
647 | if (featureflags & DMU_BACKUP_FEATURE_EMBED_DATA) | |
648 | return (SET_ERROR(EINVAL)); | |
caf9dd20 BB |
649 | |
650 | /* raw receives require spill block allocation flag */ | |
651 | if (!(flags & DRR_FLAG_SPILL_BLOCK)) | |
652 | return (SET_ERROR(ZFS_ERR_SPILL_BLOCK_FLAG_MISSING)); | |
03916905 | 653 | } else { |
68ddc06b AF |
654 | /* |
655 | * We support unencrypted datasets below encrypted ones now, | |
656 | * so add the DS_HOLD_FLAG_DECRYPT flag only if we are dealing | |
657 | * with a dataset we may encrypt. | |
658 | */ | |
211ec1b9 | 659 | if (drba->drba_dcp == NULL || |
68ddc06b AF |
660 | drba->drba_dcp->cp_crypt != ZIO_CRYPT_OFF) { |
661 | dsflags |= DS_HOLD_FLAG_DECRYPT; | |
662 | } | |
03916905 PD |
663 | } |
664 | ||
665 | error = dsl_dataset_hold_flags(dp, tofs, dsflags, FTAG, &ds); | |
666 | if (error == 0) { | |
667 | /* target fs already exists; recv into temp clone */ | |
668 | ||
669 | /* Can't recv a clone into an existing fs */ | |
670 | if (flags & DRR_FLAG_CLONE || drba->drba_origin) { | |
671 | dsl_dataset_rele_flags(ds, dsflags, FTAG); | |
672 | return (SET_ERROR(EINVAL)); | |
673 | } | |
674 | ||
675 | error = recv_begin_check_existing_impl(drba, ds, fromguid, | |
676 | featureflags); | |
677 | dsl_dataset_rele_flags(ds, dsflags, FTAG); | |
678 | } else if (error == ENOENT) { | |
679 | /* target fs does not exist; must be a full backup or clone */ | |
680 | char buf[ZFS_MAX_DATASET_NAME_LEN]; | |
d8d418ff | 681 | objset_t *os; |
03916905 | 682 | |
e8cf3a4f AP |
683 | /* healing recv must be done "into" an existing snapshot */ |
684 | if (drba->drba_cookie->drc_heal == B_TRUE) | |
685 | return (SET_ERROR(ENOTSUP)); | |
686 | ||
03916905 PD |
687 | /* |
688 | * If it's a non-clone incremental, we are missing the | |
689 | * target fs, so fail the recv. | |
690 | */ | |
30af21b0 | 691 | if (fromguid != 0 && !((flags & DRR_FLAG_CLONE) || |
03916905 PD |
692 | drba->drba_origin)) |
693 | return (SET_ERROR(ENOENT)); | |
694 | ||
695 | /* | |
696 | * If we're receiving a full send as a clone, and it doesn't | |
697 | * contain all the necessary free records and freeobject | |
698 | * records, reject it. | |
699 | */ | |
30af21b0 | 700 | if (fromguid == 0 && drba->drba_origin != NULL && |
03916905 PD |
701 | !(flags & DRR_FLAG_FREERECORDS)) |
702 | return (SET_ERROR(EINVAL)); | |
703 | ||
704 | /* Open the parent of tofs */ | |
705 | ASSERT3U(strlen(tofs), <, sizeof (buf)); | |
706 | (void) strlcpy(buf, tofs, strrchr(tofs, '/') - tofs + 1); | |
da689887 | 707 | error = dsl_dataset_hold(dp, buf, FTAG, &ds); |
03916905 PD |
708 | if (error != 0) |
709 | return (error); | |
710 | ||
711 | if ((featureflags & DMU_BACKUP_FEATURE_RAW) == 0 && | |
712 | drba->drba_origin == NULL) { | |
713 | boolean_t will_encrypt; | |
714 | ||
715 | /* | |
716 | * Check that we aren't breaking any encryption rules | |
717 | * and that we have all the parameters we need to | |
718 | * create an encrypted dataset if necessary. If we are | |
719 | * making an encrypted dataset the stream can't have | |
720 | * embedded data. | |
721 | */ | |
722 | error = dmu_objset_create_crypt_check(ds->ds_dir, | |
723 | drba->drba_dcp, &will_encrypt); | |
724 | if (error != 0) { | |
da689887 | 725 | dsl_dataset_rele(ds, FTAG); |
03916905 PD |
726 | return (error); |
727 | } | |
728 | ||
729 | if (will_encrypt && | |
730 | (featureflags & DMU_BACKUP_FEATURE_EMBED_DATA)) { | |
da689887 | 731 | dsl_dataset_rele(ds, FTAG); |
03916905 PD |
732 | return (SET_ERROR(EINVAL)); |
733 | } | |
734 | } | |
735 | ||
736 | /* | |
737 | * Check filesystem and snapshot limits before receiving. We'll | |
738 | * recheck snapshot limits again at the end (we create the | |
739 | * filesystems and increment those counts during begin_sync). | |
740 | */ | |
741 | error = dsl_fs_ss_limit_check(ds->ds_dir, 1, | |
e59a377a MA |
742 | ZFS_PROP_FILESYSTEM_LIMIT, NULL, |
743 | drba->drba_cred, drba->drba_proc); | |
03916905 | 744 | if (error != 0) { |
da689887 | 745 | dsl_dataset_rele(ds, FTAG); |
03916905 PD |
746 | return (error); |
747 | } | |
748 | ||
749 | error = dsl_fs_ss_limit_check(ds->ds_dir, 1, | |
e59a377a MA |
750 | ZFS_PROP_SNAPSHOT_LIMIT, NULL, |
751 | drba->drba_cred, drba->drba_proc); | |
03916905 | 752 | if (error != 0) { |
da689887 | 753 | dsl_dataset_rele(ds, FTAG); |
03916905 PD |
754 | return (error); |
755 | } | |
756 | ||
d8d418ff | 757 | /* can't recv below anything but filesystems (eg. no ZVOLs) */ |
758 | error = dmu_objset_from_ds(ds, &os); | |
759 | if (error != 0) { | |
da689887 | 760 | dsl_dataset_rele(ds, FTAG); |
d8d418ff | 761 | return (error); |
762 | } | |
763 | if (dmu_objset_type(os) != DMU_OST_ZFS) { | |
da689887 | 764 | dsl_dataset_rele(ds, FTAG); |
d8d418ff | 765 | return (SET_ERROR(ZFS_ERR_WRONG_PARENT)); |
766 | } | |
767 | ||
03916905 PD |
768 | if (drba->drba_origin != NULL) { |
769 | dsl_dataset_t *origin; | |
03916905 PD |
770 | error = dsl_dataset_hold_flags(dp, drba->drba_origin, |
771 | dsflags, FTAG, &origin); | |
772 | if (error != 0) { | |
da689887 | 773 | dsl_dataset_rele(ds, FTAG); |
03916905 PD |
774 | return (error); |
775 | } | |
776 | if (!origin->ds_is_snapshot) { | |
777 | dsl_dataset_rele_flags(origin, dsflags, FTAG); | |
da689887 | 778 | dsl_dataset_rele(ds, FTAG); |
03916905 PD |
779 | return (SET_ERROR(EINVAL)); |
780 | } | |
781 | if (dsl_dataset_phys(origin)->ds_guid != fromguid && | |
782 | fromguid != 0) { | |
783 | dsl_dataset_rele_flags(origin, dsflags, FTAG); | |
da689887 | 784 | dsl_dataset_rele(ds, FTAG); |
03916905 PD |
785 | return (SET_ERROR(ENODEV)); |
786 | } | |
30af21b0 | 787 | |
03916905 PD |
788 | if (origin->ds_dir->dd_crypto_obj != 0 && |
789 | (featureflags & DMU_BACKUP_FEATURE_EMBED_DATA)) { | |
790 | dsl_dataset_rele_flags(origin, dsflags, FTAG); | |
da689887 | 791 | dsl_dataset_rele(ds, FTAG); |
03916905 PD |
792 | return (SET_ERROR(EINVAL)); |
793 | } | |
30af21b0 PD |
794 | |
795 | /* | |
796 | * If the origin is redacted we need to verify that this | |
797 | * send stream can safely be received on top of the | |
798 | * origin. | |
799 | */ | |
800 | if (dsl_dataset_feature_is_active(origin, | |
801 | SPA_FEATURE_REDACTED_DATASETS)) { | |
802 | if (!redact_check(drba, origin)) { | |
803 | dsl_dataset_rele_flags(origin, dsflags, | |
804 | FTAG); | |
805 | dsl_dataset_rele_flags(ds, dsflags, | |
806 | FTAG); | |
807 | return (SET_ERROR(EINVAL)); | |
808 | } | |
809 | } | |
810 | ||
7bcb7f08 MA |
811 | error = recv_check_large_blocks(ds, featureflags); |
812 | if (error != 0) { | |
813 | dsl_dataset_rele_flags(origin, dsflags, FTAG); | |
814 | dsl_dataset_rele_flags(ds, dsflags, FTAG); | |
815 | return (error); | |
816 | } | |
817 | ||
30af21b0 | 818 | dsl_dataset_rele_flags(origin, dsflags, FTAG); |
03916905 | 819 | } |
d8d418ff | 820 | |
da689887 | 821 | dsl_dataset_rele(ds, FTAG); |
03916905 PD |
822 | error = 0; |
823 | } | |
824 | return (error); | |
825 | } | |
826 | ||
827 | static void | |
828 | dmu_recv_begin_sync(void *arg, dmu_tx_t *tx) | |
829 | { | |
830 | dmu_recv_begin_arg_t *drba = arg; | |
831 | dsl_pool_t *dp = dmu_tx_pool(tx); | |
832 | objset_t *mos = dp->dp_meta_objset; | |
30af21b0 PD |
833 | dmu_recv_cookie_t *drc = drba->drba_cookie; |
834 | struct drr_begin *drrb = drc->drc_drrb; | |
835 | const char *tofs = drc->drc_tofs; | |
836 | uint64_t featureflags = drc->drc_featureflags; | |
03916905 PD |
837 | dsl_dataset_t *ds, *newds; |
838 | objset_t *os; | |
839 | uint64_t dsobj; | |
40ab927a | 840 | ds_hold_flags_t dsflags = DS_HOLD_FLAG_NONE; |
03916905 PD |
841 | int error; |
842 | uint64_t crflags = 0; | |
843 | dsl_crypto_params_t dummy_dcp = { 0 }; | |
844 | dsl_crypto_params_t *dcp = drba->drba_dcp; | |
845 | ||
846 | if (drrb->drr_flags & DRR_FLAG_CI_DATA) | |
847 | crflags |= DS_FLAG_CI_DATASET; | |
848 | ||
849 | if ((featureflags & DMU_BACKUP_FEATURE_RAW) == 0) | |
850 | dsflags |= DS_HOLD_FLAG_DECRYPT; | |
851 | ||
852 | /* | |
853 | * Raw, non-incremental recvs always use a dummy dcp with | |
854 | * the raw cmd set. Raw incremental recvs do not use a dcp | |
855 | * since the encryption parameters are already set in stone. | |
856 | */ | |
30af21b0 | 857 | if (dcp == NULL && drrb->drr_fromguid == 0 && |
03916905 PD |
858 | drba->drba_origin == NULL) { |
859 | ASSERT3P(dcp, ==, NULL); | |
860 | dcp = &dummy_dcp; | |
861 | ||
862 | if (featureflags & DMU_BACKUP_FEATURE_RAW) | |
863 | dcp->cp_cmd = DCP_CMD_RAW_RECV; | |
864 | } | |
865 | ||
866 | error = dsl_dataset_hold_flags(dp, tofs, dsflags, FTAG, &ds); | |
867 | if (error == 0) { | |
e8cf3a4f | 868 | /* Create temporary clone unless we're doing corrective recv */ |
03916905 PD |
869 | dsl_dataset_t *snap = NULL; |
870 | ||
f00ab3f2 | 871 | if (drba->drba_cookie->drc_fromsnapobj != 0) { |
03916905 | 872 | VERIFY0(dsl_dataset_hold_obj(dp, |
f00ab3f2 | 873 | drba->drba_cookie->drc_fromsnapobj, FTAG, &snap)); |
03916905 PD |
874 | ASSERT3P(dcp, ==, NULL); |
875 | } | |
e8cf3a4f AP |
876 | if (drc->drc_heal) { |
877 | /* When healing we want to use the provided snapshot */ | |
878 | VERIFY0(dsl_dataset_snap_lookup(ds, drc->drc_tosnap, | |
879 | &dsobj)); | |
880 | } else { | |
881 | dsobj = dsl_dataset_create_sync(ds->ds_dir, | |
882 | recv_clone_name, snap, crflags, drba->drba_cred, | |
883 | dcp, tx); | |
884 | } | |
f00ab3f2 | 885 | if (drba->drba_cookie->drc_fromsnapobj != 0) |
03916905 PD |
886 | dsl_dataset_rele(snap, FTAG); |
887 | dsl_dataset_rele_flags(ds, dsflags, FTAG); | |
888 | } else { | |
889 | dsl_dir_t *dd; | |
890 | const char *tail; | |
891 | dsl_dataset_t *origin = NULL; | |
892 | ||
893 | VERIFY0(dsl_dir_hold(dp, tofs, FTAG, &dd, &tail)); | |
894 | ||
895 | if (drba->drba_origin != NULL) { | |
896 | VERIFY0(dsl_dataset_hold(dp, drba->drba_origin, | |
897 | FTAG, &origin)); | |
898 | ASSERT3P(dcp, ==, NULL); | |
899 | } | |
900 | ||
901 | /* Create new dataset. */ | |
902 | dsobj = dsl_dataset_create_sync(dd, strrchr(tofs, '/') + 1, | |
903 | origin, crflags, drba->drba_cred, dcp, tx); | |
904 | if (origin != NULL) | |
905 | dsl_dataset_rele(origin, FTAG); | |
906 | dsl_dir_rele(dd, FTAG); | |
30af21b0 PD |
907 | drc->drc_newfs = B_TRUE; |
908 | } | |
909 | VERIFY0(dsl_dataset_own_obj_force(dp, dsobj, dsflags, dmu_recv_tag, | |
910 | &newds)); | |
911 | if (dsl_dataset_feature_is_active(newds, | |
912 | SPA_FEATURE_REDACTED_DATASETS)) { | |
913 | /* | |
914 | * If the origin dataset is redacted, the child will be redacted | |
915 | * when we create it. We clear the new dataset's | |
916 | * redaction info; if it should be redacted, we'll fill | |
917 | * in its information later. | |
918 | */ | |
919 | dsl_dataset_deactivate_feature(newds, | |
920 | SPA_FEATURE_REDACTED_DATASETS, tx); | |
03916905 | 921 | } |
03916905 PD |
922 | VERIFY0(dmu_objset_from_ds(newds, &os)); |
923 | ||
30af21b0 | 924 | if (drc->drc_resumable) { |
03916905 PD |
925 | dsl_dataset_zapify(newds, tx); |
926 | if (drrb->drr_fromguid != 0) { | |
927 | VERIFY0(zap_add(mos, dsobj, DS_FIELD_RESUME_FROMGUID, | |
928 | 8, 1, &drrb->drr_fromguid, tx)); | |
929 | } | |
930 | VERIFY0(zap_add(mos, dsobj, DS_FIELD_RESUME_TOGUID, | |
931 | 8, 1, &drrb->drr_toguid, tx)); | |
932 | VERIFY0(zap_add(mos, dsobj, DS_FIELD_RESUME_TONAME, | |
933 | 1, strlen(drrb->drr_toname) + 1, drrb->drr_toname, tx)); | |
934 | uint64_t one = 1; | |
935 | uint64_t zero = 0; | |
936 | VERIFY0(zap_add(mos, dsobj, DS_FIELD_RESUME_OBJECT, | |
937 | 8, 1, &one, tx)); | |
938 | VERIFY0(zap_add(mos, dsobj, DS_FIELD_RESUME_OFFSET, | |
939 | 8, 1, &zero, tx)); | |
940 | VERIFY0(zap_add(mos, dsobj, DS_FIELD_RESUME_BYTES, | |
941 | 8, 1, &zero, tx)); | |
942 | if (featureflags & DMU_BACKUP_FEATURE_LARGE_BLOCKS) { | |
943 | VERIFY0(zap_add(mos, dsobj, DS_FIELD_RESUME_LARGEBLOCK, | |
944 | 8, 1, &one, tx)); | |
945 | } | |
946 | if (featureflags & DMU_BACKUP_FEATURE_EMBED_DATA) { | |
947 | VERIFY0(zap_add(mos, dsobj, DS_FIELD_RESUME_EMBEDOK, | |
948 | 8, 1, &one, tx)); | |
949 | } | |
950 | if (featureflags & DMU_BACKUP_FEATURE_COMPRESSED) { | |
951 | VERIFY0(zap_add(mos, dsobj, DS_FIELD_RESUME_COMPRESSOK, | |
952 | 8, 1, &one, tx)); | |
953 | } | |
954 | if (featureflags & DMU_BACKUP_FEATURE_RAW) { | |
955 | VERIFY0(zap_add(mos, dsobj, DS_FIELD_RESUME_RAWOK, | |
956 | 8, 1, &one, tx)); | |
957 | } | |
30af21b0 PD |
958 | |
959 | uint64_t *redact_snaps; | |
960 | uint_t numredactsnaps; | |
961 | if (nvlist_lookup_uint64_array(drc->drc_begin_nvl, | |
962 | BEGINNV_REDACT_FROM_SNAPS, &redact_snaps, | |
963 | &numredactsnaps) == 0) { | |
964 | VERIFY0(zap_add(mos, dsobj, | |
965 | DS_FIELD_RESUME_REDACT_BOOKMARK_SNAPS, | |
966 | sizeof (*redact_snaps), numredactsnaps, | |
967 | redact_snaps, tx)); | |
968 | } | |
03916905 PD |
969 | } |
970 | ||
971 | /* | |
972 | * Usually the os->os_encrypted value is tied to the presence of a | |
973 | * DSL Crypto Key object in the dd. However, that will not be received | |
974 | * until dmu_recv_stream(), so we set the value manually for now. | |
975 | */ | |
976 | if (featureflags & DMU_BACKUP_FEATURE_RAW) { | |
977 | os->os_encrypted = B_TRUE; | |
978 | drba->drba_cookie->drc_raw = B_TRUE; | |
979 | } | |
980 | ||
30af21b0 PD |
981 | if (featureflags & DMU_BACKUP_FEATURE_REDACTED) { |
982 | uint64_t *redact_snaps; | |
983 | uint_t numredactsnaps; | |
984 | VERIFY0(nvlist_lookup_uint64_array(drc->drc_begin_nvl, | |
985 | BEGINNV_REDACT_SNAPS, &redact_snaps, &numredactsnaps)); | |
986 | dsl_dataset_activate_redaction(newds, redact_snaps, | |
987 | numredactsnaps, tx); | |
988 | } | |
989 | ||
03916905 PD |
990 | dmu_buf_will_dirty(newds->ds_dbuf, tx); |
991 | dsl_dataset_phys(newds)->ds_flags |= DS_FLAG_INCONSISTENT; | |
992 | ||
993 | /* | |
994 | * If we actually created a non-clone, we need to create the objset | |
995 | * in our new dataset. If this is a raw send we postpone this until | |
996 | * dmu_recv_stream() so that we can allocate the metadnode with the | |
997 | * properties from the DRR_BEGIN payload. | |
998 | */ | |
999 | rrw_enter(&newds->ds_bp_rwlock, RW_READER, FTAG); | |
1000 | if (BP_IS_HOLE(dsl_dataset_get_blkptr(newds)) && | |
e8cf3a4f AP |
1001 | (featureflags & DMU_BACKUP_FEATURE_RAW) == 0 && |
1002 | !drc->drc_heal) { | |
03916905 PD |
1003 | (void) dmu_objset_create_impl(dp->dp_spa, |
1004 | newds, dsl_dataset_get_blkptr(newds), drrb->drr_type, tx); | |
1005 | } | |
1006 | rrw_exit(&newds->ds_bp_rwlock, FTAG); | |
1007 | ||
1008 | drba->drba_cookie->drc_ds = newds; | |
0fdd6106 | 1009 | drba->drba_cookie->drc_os = os; |
03916905 | 1010 | |
74756182 | 1011 | spa_history_log_internal_ds(newds, "receive", tx, " "); |
03916905 PD |
1012 | } |
1013 | ||
1014 | static int | |
1015 | dmu_recv_resume_begin_check(void *arg, dmu_tx_t *tx) | |
1016 | { | |
1017 | dmu_recv_begin_arg_t *drba = arg; | |
30af21b0 | 1018 | dmu_recv_cookie_t *drc = drba->drba_cookie; |
03916905 | 1019 | dsl_pool_t *dp = dmu_tx_pool(tx); |
30af21b0 | 1020 | struct drr_begin *drrb = drc->drc_drrb; |
03916905 | 1021 | int error; |
40ab927a | 1022 | ds_hold_flags_t dsflags = DS_HOLD_FLAG_NONE; |
03916905 | 1023 | dsl_dataset_t *ds; |
30af21b0 | 1024 | const char *tofs = drc->drc_tofs; |
03916905 PD |
1025 | |
1026 | /* already checked */ | |
1027 | ASSERT3U(drrb->drr_magic, ==, DMU_BACKUP_MAGIC); | |
30af21b0 | 1028 | ASSERT(drc->drc_featureflags & DMU_BACKUP_FEATURE_RESUMING); |
03916905 PD |
1029 | |
1030 | if (DMU_GET_STREAM_HDRTYPE(drrb->drr_versioninfo) == | |
1031 | DMU_COMPOUNDSTREAM || | |
1032 | drrb->drr_type >= DMU_OST_NUMTYPES) | |
1033 | return (SET_ERROR(EINVAL)); | |
1034 | ||
03916905 | 1035 | /* |
30af21b0 PD |
1036 | * This is mostly a sanity check since we should have already done these |
1037 | * checks during a previous attempt to receive the data. | |
03916905 | 1038 | */ |
30af21b0 PD |
1039 | error = recv_begin_check_feature_flags_impl(drc->drc_featureflags, |
1040 | dp->dp_spa); | |
1041 | if (error != 0) | |
1042 | return (error); | |
03916905 PD |
1043 | |
1044 | /* 6 extra bytes for /%recv */ | |
1045 | char recvname[ZFS_MAX_DATASET_NAME_LEN + 6]; | |
30af21b0 | 1046 | |
03916905 PD |
1047 | (void) snprintf(recvname, sizeof (recvname), "%s/%s", |
1048 | tofs, recv_clone_name); | |
1049 | ||
30af21b0 | 1050 | if (drc->drc_featureflags & DMU_BACKUP_FEATURE_RAW) { |
caf9dd20 BB |
1051 | /* raw receives require spill block allocation flag */ |
1052 | if (!(drrb->drr_flags & DRR_FLAG_SPILL_BLOCK)) | |
1053 | return (SET_ERROR(ZFS_ERR_SPILL_BLOCK_FLAG_MISSING)); | |
1054 | } else { | |
03916905 | 1055 | dsflags |= DS_HOLD_FLAG_DECRYPT; |
caf9dd20 | 1056 | } |
03916905 | 1057 | |
3ed9d688 | 1058 | boolean_t recvexist = B_TRUE; |
03916905 PD |
1059 | if (dsl_dataset_hold_flags(dp, recvname, dsflags, FTAG, &ds) != 0) { |
1060 | /* %recv does not exist; continue in tofs */ | |
3ed9d688 | 1061 | recvexist = B_FALSE; |
03916905 PD |
1062 | error = dsl_dataset_hold_flags(dp, tofs, dsflags, FTAG, &ds); |
1063 | if (error != 0) | |
1064 | return (error); | |
1065 | } | |
1066 | ||
3ed9d688 JP |
1067 | /* |
1068 | * Resume of full/newfs recv on existing dataset should be done with | |
1069 | * force flag | |
1070 | */ | |
1071 | if (recvexist && drrb->drr_fromguid == 0 && !drc->drc_force) { | |
1072 | dsl_dataset_rele_flags(ds, dsflags, FTAG); | |
1073 | return (SET_ERROR(ZFS_ERR_RESUME_EXISTS)); | |
1074 | } | |
1075 | ||
03916905 PD |
1076 | /* check that ds is marked inconsistent */ |
1077 | if (!DS_IS_INCONSISTENT(ds)) { | |
1078 | dsl_dataset_rele_flags(ds, dsflags, FTAG); | |
1079 | return (SET_ERROR(EINVAL)); | |
1080 | } | |
1081 | ||
1082 | /* check that there is resuming data, and that the toguid matches */ | |
1083 | if (!dsl_dataset_is_zapified(ds)) { | |
1084 | dsl_dataset_rele_flags(ds, dsflags, FTAG); | |
1085 | return (SET_ERROR(EINVAL)); | |
1086 | } | |
1087 | uint64_t val; | |
1088 | error = zap_lookup(dp->dp_meta_objset, ds->ds_object, | |
1089 | DS_FIELD_RESUME_TOGUID, sizeof (val), 1, &val); | |
1090 | if (error != 0 || drrb->drr_toguid != val) { | |
1091 | dsl_dataset_rele_flags(ds, dsflags, FTAG); | |
1092 | return (SET_ERROR(EINVAL)); | |
1093 | } | |
1094 | ||
1095 | /* | |
1096 | * Check if the receive is still running. If so, it will be owned. | |
1097 | * Note that nothing else can own the dataset (e.g. after the receive | |
1098 | * fails) because it will be marked inconsistent. | |
1099 | */ | |
1100 | if (dsl_dataset_has_owner(ds)) { | |
1101 | dsl_dataset_rele_flags(ds, dsflags, FTAG); | |
1102 | return (SET_ERROR(EBUSY)); | |
1103 | } | |
1104 | ||
1105 | /* There should not be any snapshots of this fs yet. */ | |
1106 | if (ds->ds_prev != NULL && ds->ds_prev->ds_dir == ds->ds_dir) { | |
1107 | dsl_dataset_rele_flags(ds, dsflags, FTAG); | |
1108 | return (SET_ERROR(EINVAL)); | |
1109 | } | |
1110 | ||
1111 | /* | |
1112 | * Note: resume point will be checked when we process the first WRITE | |
1113 | * record. | |
1114 | */ | |
1115 | ||
1116 | /* check that the origin matches */ | |
1117 | val = 0; | |
1118 | (void) zap_lookup(dp->dp_meta_objset, ds->ds_object, | |
1119 | DS_FIELD_RESUME_FROMGUID, sizeof (val), 1, &val); | |
1120 | if (drrb->drr_fromguid != val) { | |
1121 | dsl_dataset_rele_flags(ds, dsflags, FTAG); | |
1122 | return (SET_ERROR(EINVAL)); | |
1123 | } | |
1124 | ||
aa646323 | 1125 | if (ds->ds_prev != NULL && drrb->drr_fromguid != 0) |
61152d10 TC |
1126 | drc->drc_fromsnapobj = ds->ds_prev->ds_object; |
1127 | ||
30af21b0 PD |
1128 | /* |
1129 | * If we're resuming, and the send is redacted, then the original send | |
1130 | * must have been redacted, and must have been redacted with respect to | |
1131 | * the same snapshots. | |
1132 | */ | |
1133 | if (drc->drc_featureflags & DMU_BACKUP_FEATURE_REDACTED) { | |
1134 | uint64_t num_ds_redact_snaps; | |
1135 | uint64_t *ds_redact_snaps; | |
1136 | ||
1137 | uint_t num_stream_redact_snaps; | |
1138 | uint64_t *stream_redact_snaps; | |
1139 | ||
1140 | if (nvlist_lookup_uint64_array(drc->drc_begin_nvl, | |
1141 | BEGINNV_REDACT_SNAPS, &stream_redact_snaps, | |
1142 | &num_stream_redact_snaps) != 0) { | |
1143 | dsl_dataset_rele_flags(ds, dsflags, FTAG); | |
1144 | return (SET_ERROR(EINVAL)); | |
1145 | } | |
1146 | ||
1147 | if (!dsl_dataset_get_uint64_array_feature(ds, | |
1148 | SPA_FEATURE_REDACTED_DATASETS, &num_ds_redact_snaps, | |
1149 | &ds_redact_snaps)) { | |
1150 | dsl_dataset_rele_flags(ds, dsflags, FTAG); | |
1151 | return (SET_ERROR(EINVAL)); | |
1152 | } | |
1153 | ||
1154 | for (int i = 0; i < num_ds_redact_snaps; i++) { | |
1155 | if (!redact_snaps_contains(ds_redact_snaps, | |
1156 | num_ds_redact_snaps, stream_redact_snaps[i])) { | |
1157 | dsl_dataset_rele_flags(ds, dsflags, FTAG); | |
1158 | return (SET_ERROR(EINVAL)); | |
1159 | } | |
1160 | } | |
1161 | } | |
7bcb7f08 MA |
1162 | |
1163 | error = recv_check_large_blocks(ds, drc->drc_featureflags); | |
1164 | if (error != 0) { | |
1165 | dsl_dataset_rele_flags(ds, dsflags, FTAG); | |
1166 | return (error); | |
1167 | } | |
1168 | ||
03916905 PD |
1169 | dsl_dataset_rele_flags(ds, dsflags, FTAG); |
1170 | return (0); | |
1171 | } | |
1172 | ||
1173 | static void | |
1174 | dmu_recv_resume_begin_sync(void *arg, dmu_tx_t *tx) | |
1175 | { | |
1176 | dmu_recv_begin_arg_t *drba = arg; | |
1177 | dsl_pool_t *dp = dmu_tx_pool(tx); | |
1178 | const char *tofs = drba->drba_cookie->drc_tofs; | |
30af21b0 | 1179 | uint64_t featureflags = drba->drba_cookie->drc_featureflags; |
03916905 | 1180 | dsl_dataset_t *ds; |
40ab927a | 1181 | ds_hold_flags_t dsflags = DS_HOLD_FLAG_NONE; |
03916905 PD |
1182 | /* 6 extra bytes for /%recv */ |
1183 | char recvname[ZFS_MAX_DATASET_NAME_LEN + 6]; | |
1184 | ||
30af21b0 PD |
1185 | (void) snprintf(recvname, sizeof (recvname), "%s/%s", tofs, |
1186 | recv_clone_name); | |
03916905 PD |
1187 | |
1188 | if (featureflags & DMU_BACKUP_FEATURE_RAW) { | |
1189 | drba->drba_cookie->drc_raw = B_TRUE; | |
1190 | } else { | |
1191 | dsflags |= DS_HOLD_FLAG_DECRYPT; | |
1192 | } | |
1193 | ||
30af21b0 PD |
1194 | if (dsl_dataset_own_force(dp, recvname, dsflags, dmu_recv_tag, &ds) |
1195 | != 0) { | |
03916905 | 1196 | /* %recv does not exist; continue in tofs */ |
30af21b0 PD |
1197 | VERIFY0(dsl_dataset_own_force(dp, tofs, dsflags, dmu_recv_tag, |
1198 | &ds)); | |
03916905 PD |
1199 | drba->drba_cookie->drc_newfs = B_TRUE; |
1200 | } | |
1201 | ||
03916905 | 1202 | ASSERT(DS_IS_INCONSISTENT(ds)); |
03916905 PD |
1203 | rrw_enter(&ds->ds_bp_rwlock, RW_READER, FTAG); |
1204 | ASSERT(!BP_IS_HOLE(dsl_dataset_get_blkptr(ds)) || | |
1205 | drba->drba_cookie->drc_raw); | |
1206 | rrw_exit(&ds->ds_bp_rwlock, FTAG); | |
1207 | ||
1208 | drba->drba_cookie->drc_ds = ds; | |
0fdd6106 | 1209 | VERIFY0(dmu_objset_from_ds(ds, &drba->drba_cookie->drc_os)); |
61152d10 | 1210 | drba->drba_cookie->drc_should_save = B_TRUE; |
03916905 | 1211 | |
74756182 | 1212 | spa_history_log_internal_ds(ds, "resume receive", tx, " "); |
03916905 PD |
1213 | } |
1214 | ||
1215 | /* | |
1216 | * NB: callers *MUST* call dmu_recv_stream() if dmu_recv_begin() | |
1217 | * succeeds; otherwise we will leak the holds on the datasets. | |
1218 | */ | |
1219 | int | |
d1807f16 RY |
1220 | dmu_recv_begin(const char *tofs, const char *tosnap, |
1221 | dmu_replay_record_t *drr_begin, boolean_t force, boolean_t heal, | |
1222 | boolean_t resumable, nvlist_t *localprops, nvlist_t *hidden_args, | |
1223 | const char *origin, dmu_recv_cookie_t *drc, zfs_file_t *fp, | |
1224 | offset_t *voffp) | |
03916905 PD |
1225 | { |
1226 | dmu_recv_begin_arg_t drba = { 0 }; | |
1c212d1b | 1227 | int err = 0; |
03916905 | 1228 | |
861166b0 | 1229 | memset(drc, 0, sizeof (dmu_recv_cookie_t)); |
03916905 PD |
1230 | drc->drc_drr_begin = drr_begin; |
1231 | drc->drc_drrb = &drr_begin->drr_u.drr_begin; | |
1232 | drc->drc_tosnap = tosnap; | |
1233 | drc->drc_tofs = tofs; | |
1234 | drc->drc_force = force; | |
e8cf3a4f | 1235 | drc->drc_heal = heal; |
03916905 PD |
1236 | drc->drc_resumable = resumable; |
1237 | drc->drc_cred = CRED(); | |
e59a377a | 1238 | drc->drc_proc = curproc; |
03916905 PD |
1239 | drc->drc_clone = (origin != NULL); |
1240 | ||
1241 | if (drc->drc_drrb->drr_magic == BSWAP_64(DMU_BACKUP_MAGIC)) { | |
1242 | drc->drc_byteswap = B_TRUE; | |
1243 | (void) fletcher_4_incremental_byteswap(drr_begin, | |
1244 | sizeof (dmu_replay_record_t), &drc->drc_cksum); | |
1245 | byteswap_record(drr_begin); | |
1246 | } else if (drc->drc_drrb->drr_magic == DMU_BACKUP_MAGIC) { | |
1247 | (void) fletcher_4_incremental_native(drr_begin, | |
1248 | sizeof (dmu_replay_record_t), &drc->drc_cksum); | |
1249 | } else { | |
1250 | return (SET_ERROR(EINVAL)); | |
1251 | } | |
1252 | ||
da92d5cb | 1253 | drc->drc_fp = fp; |
30af21b0 PD |
1254 | drc->drc_voff = *voffp; |
1255 | drc->drc_featureflags = | |
1256 | DMU_GET_FEATUREFLAGS(drc->drc_drrb->drr_versioninfo); | |
1257 | ||
1258 | uint32_t payloadlen = drc->drc_drr_begin->drr_payloadlen; | |
73968def RY |
1259 | |
1260 | /* | |
1261 | * Since OpenZFS 2.0.0, we have enforced a 64MB limit in userspace | |
1262 | * configurable via ZFS_SENDRECV_MAX_NVLIST. We enforce 256MB as a hard | |
1263 | * upper limit. Systems with less than 1GB of RAM will see a lower | |
1264 | * limit from `arc_all_memory() / 4`. | |
1265 | */ | |
1266 | if (payloadlen > (MIN((1U << 28), arc_all_memory() / 4))) | |
1267 | return (E2BIG); | |
1268 | ||
30af21b0 | 1269 | |
30af21b0 | 1270 | if (payloadlen != 0) { |
da19d919 PD |
1271 | void *payload = vmem_alloc(payloadlen, KM_SLEEP); |
1272 | /* | |
1273 | * For compatibility with recursive send streams, we don't do | |
1274 | * this here if the stream could be part of a package. Instead, | |
1275 | * we'll do it in dmu_recv_stream. If we pull the next header | |
1276 | * too early, and it's the END record, we break the `recv_skip` | |
1277 | * logic. | |
1278 | */ | |
1279 | ||
1280 | err = receive_read_payload_and_next_header(drc, payloadlen, | |
1281 | payload); | |
1282 | if (err != 0) { | |
1283 | vmem_free(payload, payloadlen); | |
1284 | return (err); | |
1285 | } | |
30af21b0 PD |
1286 | err = nvlist_unpack(payload, payloadlen, &drc->drc_begin_nvl, |
1287 | KM_SLEEP); | |
73968def | 1288 | vmem_free(payload, payloadlen); |
30af21b0 PD |
1289 | if (err != 0) { |
1290 | kmem_free(drc->drc_next_rrd, | |
1291 | sizeof (*drc->drc_next_rrd)); | |
1292 | return (err); | |
1293 | } | |
1294 | } | |
1295 | ||
caf9dd20 BB |
1296 | if (drc->drc_drrb->drr_flags & DRR_FLAG_SPILL_BLOCK) |
1297 | drc->drc_spill = B_TRUE; | |
1298 | ||
03916905 PD |
1299 | drba.drba_origin = origin; |
1300 | drba.drba_cookie = drc; | |
1301 | drba.drba_cred = CRED(); | |
e59a377a | 1302 | drba.drba_proc = curproc; |
03916905 | 1303 | |
30af21b0 PD |
1304 | if (drc->drc_featureflags & DMU_BACKUP_FEATURE_RESUMING) { |
1305 | err = dsl_sync_task(tofs, | |
03916905 | 1306 | dmu_recv_resume_begin_check, dmu_recv_resume_begin_sync, |
30af21b0 PD |
1307 | &drba, 5, ZFS_SPACE_CHECK_NORMAL); |
1308 | } else { | |
03916905 PD |
1309 | /* |
1310 | * For non-raw, non-incremental, non-resuming receives the | |
1311 | * user can specify encryption parameters on the command line | |
1312 | * with "zfs recv -o". For these receives we create a dcp and | |
1313 | * pass it to the sync task. Creating the dcp will implicitly | |
1314 | * remove the encryption params from the localprops nvlist, | |
1315 | * which avoids errors when trying to set these normally | |
1316 | * read-only properties. Any other kind of receive that | |
1317 | * attempts to set these properties will fail as a result. | |
1318 | */ | |
1319 | if ((DMU_GET_FEATUREFLAGS(drc->drc_drrb->drr_versioninfo) & | |
1320 | DMU_BACKUP_FEATURE_RAW) == 0 && | |
1321 | origin == NULL && drc->drc_drrb->drr_fromguid == 0) { | |
1322 | err = dsl_crypto_params_create_nvlist(DCP_CMD_NONE, | |
1323 | localprops, hidden_args, &drba.drba_dcp); | |
03916905 PD |
1324 | } |
1325 | ||
30af21b0 PD |
1326 | if (err == 0) { |
1327 | err = dsl_sync_task(tofs, | |
1328 | dmu_recv_begin_check, dmu_recv_begin_sync, | |
1329 | &drba, 5, ZFS_SPACE_CHECK_NORMAL); | |
1330 | dsl_crypto_params_free(drba.drba_dcp, !!err); | |
1331 | } | |
1332 | } | |
03916905 | 1333 | |
30af21b0 PD |
1334 | if (err != 0) { |
1335 | kmem_free(drc->drc_next_rrd, sizeof (*drc->drc_next_rrd)); | |
1336 | nvlist_free(drc->drc_begin_nvl); | |
03916905 | 1337 | } |
30af21b0 | 1338 | return (err); |
03916905 PD |
1339 | } |
1340 | ||
e8cf3a4f AP |
1341 | /* |
1342 | * Holds data need for corrective recv callback | |
1343 | */ | |
1344 | typedef struct cr_cb_data { | |
1345 | uint64_t size; | |
1346 | zbookmark_phys_t zb; | |
1347 | spa_t *spa; | |
1348 | } cr_cb_data_t; | |
1349 | ||
1350 | static void | |
1351 | corrective_read_done(zio_t *zio) | |
1352 | { | |
1353 | cr_cb_data_t *data = zio->io_private; | |
1354 | /* Corruption corrected; update error log if needed */ | |
1355 | if (zio->io_error == 0) | |
6839ec6f | 1356 | spa_remove_error(data->spa, &data->zb, &zio->io_bp->blk_birth); |
e8cf3a4f AP |
1357 | kmem_free(data, sizeof (cr_cb_data_t)); |
1358 | abd_free(zio->io_abd); | |
1359 | } | |
1360 | ||
1361 | /* | |
1362 | * zio_rewrite the data pointed to by bp with the data from the rrd's abd. | |
1363 | */ | |
1364 | static int | |
1365 | do_corrective_recv(struct receive_writer_arg *rwa, struct drr_write *drrw, | |
1366 | struct receive_record_arg *rrd, blkptr_t *bp) | |
1367 | { | |
1368 | int err; | |
1369 | zio_t *io; | |
1370 | zbookmark_phys_t zb; | |
1371 | dnode_t *dn; | |
1372 | abd_t *abd = rrd->abd; | |
1373 | zio_cksum_t bp_cksum = bp->blk_cksum; | |
70ea484e AM |
1374 | zio_flag_t flags = ZIO_FLAG_SPECULATIVE | ZIO_FLAG_DONT_RETRY | |
1375 | ZIO_FLAG_CANFAIL; | |
e8cf3a4f AP |
1376 | |
1377 | if (rwa->raw) | |
1378 | flags |= ZIO_FLAG_RAW; | |
1379 | ||
1380 | err = dnode_hold(rwa->os, drrw->drr_object, FTAG, &dn); | |
1381 | if (err != 0) | |
1382 | return (err); | |
1383 | SET_BOOKMARK(&zb, dmu_objset_id(rwa->os), drrw->drr_object, 0, | |
1384 | dbuf_whichblock(dn, 0, drrw->drr_offset)); | |
1385 | dnode_rele(dn, FTAG); | |
1386 | ||
1387 | if (!rwa->raw && DRR_WRITE_COMPRESSED(drrw)) { | |
1388 | /* Decompress the stream data */ | |
1389 | abd_t *dabd = abd_alloc_linear( | |
1390 | drrw->drr_logical_size, B_FALSE); | |
1391 | err = zio_decompress_data(drrw->drr_compressiontype, | |
1392 | abd, abd_to_buf(dabd), abd_get_size(abd), | |
1393 | abd_get_size(dabd), NULL); | |
1394 | ||
1395 | if (err != 0) { | |
1396 | abd_free(dabd); | |
1397 | return (err); | |
1398 | } | |
1399 | /* Swap in the newly decompressed data into the abd */ | |
1400 | abd_free(abd); | |
1401 | abd = dabd; | |
1402 | } | |
1403 | ||
1404 | if (!rwa->raw && BP_GET_COMPRESS(bp) != ZIO_COMPRESS_OFF) { | |
1405 | /* Recompress the data */ | |
1406 | abd_t *cabd = abd_alloc_linear(BP_GET_PSIZE(bp), | |
1407 | B_FALSE); | |
bff26b02 | 1408 | void *buf = abd_to_buf(cabd); |
e8cf3a4f | 1409 | uint64_t csize = zio_compress_data(BP_GET_COMPRESS(bp), |
bff26b02 | 1410 | abd, &buf, abd_get_size(abd), |
e8cf3a4f AP |
1411 | rwa->os->os_complevel); |
1412 | abd_zero_off(cabd, csize, BP_GET_PSIZE(bp) - csize); | |
1413 | /* Swap in newly compressed data into the abd */ | |
1414 | abd_free(abd); | |
1415 | abd = cabd; | |
1416 | flags |= ZIO_FLAG_RAW_COMPRESS; | |
1417 | } | |
1418 | ||
1419 | /* | |
1420 | * The stream is not encrypted but the data on-disk is. | |
1421 | * We need to re-encrypt the buf using the same | |
1422 | * encryption type, salt, iv, and mac that was used to encrypt | |
1423 | * the block previosly. | |
1424 | */ | |
1425 | if (!rwa->raw && BP_USES_CRYPT(bp)) { | |
1426 | dsl_dataset_t *ds; | |
1427 | dsl_crypto_key_t *dck = NULL; | |
1428 | uint8_t salt[ZIO_DATA_SALT_LEN]; | |
1429 | uint8_t iv[ZIO_DATA_IV_LEN]; | |
1430 | uint8_t mac[ZIO_DATA_MAC_LEN]; | |
1431 | boolean_t no_crypt = B_FALSE; | |
1432 | dsl_pool_t *dp = dmu_objset_pool(rwa->os); | |
1433 | abd_t *eabd = abd_alloc_linear(BP_GET_PSIZE(bp), B_FALSE); | |
1434 | ||
1435 | zio_crypt_decode_params_bp(bp, salt, iv); | |
1436 | zio_crypt_decode_mac_bp(bp, mac); | |
1437 | ||
1438 | dsl_pool_config_enter(dp, FTAG); | |
1439 | err = dsl_dataset_hold_flags(dp, rwa->tofs, | |
1440 | DS_HOLD_FLAG_DECRYPT, FTAG, &ds); | |
1441 | if (err != 0) { | |
1442 | dsl_pool_config_exit(dp, FTAG); | |
1443 | abd_free(eabd); | |
1444 | return (SET_ERROR(EACCES)); | |
1445 | } | |
1446 | ||
1447 | /* Look up the key from the spa's keystore */ | |
1448 | err = spa_keystore_lookup_key(rwa->os->os_spa, | |
1449 | zb.zb_objset, FTAG, &dck); | |
1450 | if (err != 0) { | |
1451 | dsl_dataset_rele_flags(ds, DS_HOLD_FLAG_DECRYPT, | |
1452 | FTAG); | |
1453 | dsl_pool_config_exit(dp, FTAG); | |
1454 | abd_free(eabd); | |
1455 | return (SET_ERROR(EACCES)); | |
1456 | } | |
1457 | ||
1458 | err = zio_do_crypt_abd(B_TRUE, &dck->dck_key, | |
1459 | BP_GET_TYPE(bp), BP_SHOULD_BYTESWAP(bp), salt, iv, | |
1460 | mac, abd_get_size(abd), abd, eabd, &no_crypt); | |
1461 | ||
1462 | spa_keystore_dsl_key_rele(rwa->os->os_spa, dck, FTAG); | |
1463 | dsl_dataset_rele_flags(ds, DS_HOLD_FLAG_DECRYPT, FTAG); | |
1464 | dsl_pool_config_exit(dp, FTAG); | |
1465 | ||
1466 | ASSERT0(no_crypt); | |
1467 | if (err != 0) { | |
1468 | abd_free(eabd); | |
1469 | return (err); | |
1470 | } | |
1471 | /* Swap in the newly encrypted data into the abd */ | |
1472 | abd_free(abd); | |
1473 | abd = eabd; | |
1474 | ||
1475 | /* | |
1476 | * We want to prevent zio_rewrite() from trying to | |
1477 | * encrypt the data again | |
1478 | */ | |
1479 | flags |= ZIO_FLAG_RAW_ENCRYPT; | |
1480 | } | |
1481 | rrd->abd = abd; | |
1482 | ||
1483 | io = zio_rewrite(NULL, rwa->os->os_spa, bp->blk_birth, bp, abd, | |
1484 | BP_GET_PSIZE(bp), NULL, NULL, ZIO_PRIORITY_SYNC_WRITE, flags, &zb); | |
1485 | ||
1486 | ASSERT(abd_get_size(abd) == BP_GET_LSIZE(bp) || | |
1487 | abd_get_size(abd) == BP_GET_PSIZE(bp)); | |
1488 | ||
1489 | /* compute new bp checksum value and make sure it matches the old one */ | |
1490 | zio_checksum_compute(io, BP_GET_CHECKSUM(bp), abd, abd_get_size(abd)); | |
1491 | if (!ZIO_CHECKSUM_EQUAL(bp_cksum, io->io_bp->blk_cksum)) { | |
1492 | zio_destroy(io); | |
1493 | if (zfs_recv_best_effort_corrective != 0) | |
1494 | return (0); | |
1495 | return (SET_ERROR(ECKSUM)); | |
1496 | } | |
1497 | ||
1498 | /* Correct the corruption in place */ | |
1499 | err = zio_wait(io); | |
1500 | if (err == 0) { | |
1501 | cr_cb_data_t *cb_data = | |
1502 | kmem_alloc(sizeof (cr_cb_data_t), KM_SLEEP); | |
1503 | cb_data->spa = rwa->os->os_spa; | |
1504 | cb_data->size = drrw->drr_logical_size; | |
1505 | cb_data->zb = zb; | |
1506 | /* Test if healing worked by re-reading the bp */ | |
1507 | err = zio_wait(zio_read(rwa->heal_pio, rwa->os->os_spa, bp, | |
1508 | abd_alloc_for_io(drrw->drr_logical_size, B_FALSE), | |
1509 | drrw->drr_logical_size, corrective_read_done, | |
1510 | cb_data, ZIO_PRIORITY_ASYNC_READ, flags, NULL)); | |
1511 | } | |
1512 | if (err != 0 && zfs_recv_best_effort_corrective != 0) | |
1513 | err = 0; | |
1514 | ||
1515 | return (err); | |
1516 | } | |
1517 | ||
03916905 | 1518 | static int |
30af21b0 | 1519 | receive_read(dmu_recv_cookie_t *drc, int len, void *buf) |
03916905 PD |
1520 | { |
1521 | int done = 0; | |
1522 | ||
1523 | /* | |
1524 | * The code doesn't rely on this (lengths being multiples of 8). See | |
1525 | * comment in dump_bytes. | |
1526 | */ | |
1527 | ASSERT(len % 8 == 0 || | |
30af21b0 | 1528 | (drc->drc_featureflags & DMU_BACKUP_FEATURE_RAW) != 0); |
03916905 PD |
1529 | |
1530 | while (done < len) { | |
71974946 | 1531 | ssize_t resid = len - done; |
8b240f14 MA |
1532 | zfs_file_t *fp = drc->drc_fp; |
1533 | int err = zfs_file_read(fp, (char *)buf + done, | |
da92d5cb | 1534 | len - done, &resid); |
71974946 | 1535 | if (err == 0 && resid == len - done) { |
03916905 | 1536 | /* |
7145123b PD |
1537 | * Note: ECKSUM or ZFS_ERR_STREAM_TRUNCATED indicates |
1538 | * that the receive was interrupted and can | |
1539 | * potentially be resumed. | |
03916905 | 1540 | */ |
8b240f14 | 1541 | err = SET_ERROR(ZFS_ERR_STREAM_TRUNCATED); |
03916905 | 1542 | } |
30af21b0 | 1543 | drc->drc_voff += len - done - resid; |
03916905 | 1544 | done = len - resid; |
8b240f14 MA |
1545 | if (err != 0) |
1546 | return (err); | |
03916905 PD |
1547 | } |
1548 | ||
30af21b0 | 1549 | drc->drc_bytes_read += len; |
03916905 PD |
1550 | |
1551 | ASSERT3U(done, ==, len); | |
1552 | return (0); | |
1553 | } | |
1554 | ||
03916905 PD |
1555 | static inline uint8_t |
1556 | deduce_nblkptr(dmu_object_type_t bonus_type, uint64_t bonus_size) | |
1557 | { | |
1558 | if (bonus_type == DMU_OT_SA) { | |
1559 | return (1); | |
1560 | } else { | |
1561 | return (1 + | |
1562 | ((DN_OLD_MAX_BONUSLEN - | |
1563 | MIN(DN_OLD_MAX_BONUSLEN, bonus_size)) >> SPA_BLKPTRSHIFT)); | |
1564 | } | |
1565 | } | |
1566 | ||
1567 | static void | |
1568 | save_resume_state(struct receive_writer_arg *rwa, | |
1569 | uint64_t object, uint64_t offset, dmu_tx_t *tx) | |
1570 | { | |
1571 | int txgoff = dmu_tx_get_txg(tx) & TXG_MASK; | |
1572 | ||
1573 | if (!rwa->resumable) | |
1574 | return; | |
1575 | ||
1576 | /* | |
1577 | * We use ds_resume_bytes[] != 0 to indicate that we need to | |
1578 | * update this on disk, so it must not be 0. | |
1579 | */ | |
1580 | ASSERT(rwa->bytes_read != 0); | |
1581 | ||
1582 | /* | |
1583 | * We only resume from write records, which have a valid | |
1584 | * (non-meta-dnode) object number. | |
1585 | */ | |
1586 | ASSERT(object != 0); | |
1587 | ||
1588 | /* | |
1589 | * For resuming to work correctly, we must receive records in order, | |
1590 | * sorted by object,offset. This is checked by the callers, but | |
1591 | * assert it here for good measure. | |
1592 | */ | |
1593 | ASSERT3U(object, >=, rwa->os->os_dsl_dataset->ds_resume_object[txgoff]); | |
1594 | ASSERT(object != rwa->os->os_dsl_dataset->ds_resume_object[txgoff] || | |
1595 | offset >= rwa->os->os_dsl_dataset->ds_resume_offset[txgoff]); | |
1596 | ASSERT3U(rwa->bytes_read, >=, | |
1597 | rwa->os->os_dsl_dataset->ds_resume_bytes[txgoff]); | |
1598 | ||
1599 | rwa->os->os_dsl_dataset->ds_resume_object[txgoff] = object; | |
1600 | rwa->os->os_dsl_dataset->ds_resume_offset[txgoff] = offset; | |
1601 | rwa->os->os_dsl_dataset->ds_resume_bytes[txgoff] = rwa->bytes_read; | |
1602 | } | |
1603 | ||
7bcb7f08 MA |
1604 | static int |
1605 | receive_object_is_same_generation(objset_t *os, uint64_t object, | |
1606 | dmu_object_type_t old_bonus_type, dmu_object_type_t new_bonus_type, | |
1607 | const void *new_bonus, boolean_t *samegenp) | |
1608 | { | |
1609 | zfs_file_info_t zoi; | |
1610 | int err; | |
1611 | ||
1612 | dmu_buf_t *old_bonus_dbuf; | |
1613 | err = dmu_bonus_hold(os, object, FTAG, &old_bonus_dbuf); | |
1614 | if (err != 0) | |
1615 | return (err); | |
1616 | err = dmu_get_file_info(os, old_bonus_type, old_bonus_dbuf->db_data, | |
1617 | &zoi); | |
1618 | dmu_buf_rele(old_bonus_dbuf, FTAG); | |
1619 | if (err != 0) | |
1620 | return (err); | |
1621 | uint64_t old_gen = zoi.zfi_generation; | |
1622 | ||
1623 | err = dmu_get_file_info(os, new_bonus_type, new_bonus, &zoi); | |
1624 | if (err != 0) | |
1625 | return (err); | |
1626 | uint64_t new_gen = zoi.zfi_generation; | |
1627 | ||
1628 | *samegenp = (old_gen == new_gen); | |
1629 | return (0); | |
1630 | } | |
1631 | ||
1632 | static int | |
1633 | receive_handle_existing_object(const struct receive_writer_arg *rwa, | |
1634 | const struct drr_object *drro, const dmu_object_info_t *doi, | |
1635 | const void *bonus_data, | |
1636 | uint64_t *object_to_hold, uint32_t *new_blksz) | |
1637 | { | |
1638 | uint32_t indblksz = drro->drr_indblkshift ? | |
1639 | 1ULL << drro->drr_indblkshift : 0; | |
1640 | int nblkptr = deduce_nblkptr(drro->drr_bonustype, | |
1641 | drro->drr_bonuslen); | |
1642 | uint8_t dn_slots = drro->drr_dn_slots != 0 ? | |
1643 | drro->drr_dn_slots : DNODE_MIN_SLOTS; | |
1644 | boolean_t do_free_range = B_FALSE; | |
1645 | int err; | |
1646 | ||
1647 | *object_to_hold = drro->drr_object; | |
1648 | ||
1649 | /* nblkptr should be bounded by the bonus size and type */ | |
1650 | if (rwa->raw && nblkptr != drro->drr_nblkptr) | |
1651 | return (SET_ERROR(EINVAL)); | |
1652 | ||
1653 | /* | |
1654 | * After the previous send stream, the sending system may | |
1655 | * have freed this object, and then happened to re-allocate | |
1656 | * this object number in a later txg. In this case, we are | |
1657 | * receiving a different logical file, and the block size may | |
1658 | * appear to be different. i.e. we may have a different | |
1659 | * block size for this object than what the send stream says. | |
1660 | * In this case we need to remove the object's contents, | |
1661 | * so that its structure can be changed and then its contents | |
1662 | * entirely replaced by subsequent WRITE records. | |
1663 | * | |
1664 | * If this is a -L (--large-block) incremental stream, and | |
1665 | * the previous stream was not -L, the block size may appear | |
1666 | * to increase. i.e. we may have a smaller block size for | |
1667 | * this object than what the send stream says. In this case | |
1668 | * we need to keep the object's contents and block size | |
1669 | * intact, so that we don't lose parts of the object's | |
1670 | * contents that are not changed by this incremental send | |
1671 | * stream. | |
1672 | * | |
1673 | * We can distinguish between the two above cases by using | |
1674 | * the ZPL's generation number (see | |
1675 | * receive_object_is_same_generation()). However, we only | |
1676 | * want to rely on the generation number when absolutely | |
1677 | * necessary, because with raw receives, the generation is | |
1678 | * encrypted. We also want to minimize dependence on the | |
1679 | * ZPL, so that other types of datasets can also be received | |
1680 | * (e.g. ZVOLs, although note that ZVOLS currently do not | |
1681 | * reallocate their objects or change their structure). | |
1682 | * Therefore, we check a number of different cases where we | |
1683 | * know it is safe to discard the object's contents, before | |
1684 | * using the ZPL's generation number to make the above | |
1685 | * distinction. | |
1686 | */ | |
1687 | if (drro->drr_blksz != doi->doi_data_block_size) { | |
1688 | if (rwa->raw) { | |
1689 | /* | |
1690 | * RAW streams always have large blocks, so | |
1691 | * we are sure that the data is not needed | |
1692 | * due to changing --large-block to be on. | |
1693 | * Which is fortunate since the bonus buffer | |
1694 | * (which contains the ZPL generation) is | |
1695 | * encrypted, and the key might not be | |
1696 | * loaded. | |
1697 | */ | |
1698 | do_free_range = B_TRUE; | |
1699 | } else if (rwa->full) { | |
1700 | /* | |
1701 | * This is a full send stream, so it always | |
1702 | * replaces what we have. Even if the | |
1703 | * generation numbers happen to match, this | |
1704 | * can not actually be the same logical file. | |
1705 | * This is relevant when receiving a full | |
1706 | * send as a clone. | |
1707 | */ | |
1708 | do_free_range = B_TRUE; | |
1709 | } else if (drro->drr_type != | |
1710 | DMU_OT_PLAIN_FILE_CONTENTS || | |
1711 | doi->doi_type != DMU_OT_PLAIN_FILE_CONTENTS) { | |
1712 | /* | |
1713 | * PLAIN_FILE_CONTENTS are the only type of | |
1714 | * objects that have ever been stored with | |
1715 | * large blocks, so we don't need the special | |
1716 | * logic below. ZAP blocks can shrink (when | |
1717 | * there's only one block), so we don't want | |
1718 | * to hit the error below about block size | |
1719 | * only increasing. | |
1720 | */ | |
1721 | do_free_range = B_TRUE; | |
1722 | } else if (doi->doi_max_offset <= | |
1723 | doi->doi_data_block_size) { | |
1724 | /* | |
1725 | * There is only one block. We can free it, | |
1726 | * because its contents will be replaced by a | |
1727 | * WRITE record. This can not be the no-L -> | |
1728 | * -L case, because the no-L case would have | |
1729 | * resulted in multiple blocks. If we | |
1730 | * supported -L -> no-L, it would not be safe | |
1731 | * to free the file's contents. Fortunately, | |
1732 | * that is not allowed (see | |
1733 | * recv_check_large_blocks()). | |
1734 | */ | |
1735 | do_free_range = B_TRUE; | |
1736 | } else { | |
1737 | boolean_t is_same_gen; | |
1738 | err = receive_object_is_same_generation(rwa->os, | |
1739 | drro->drr_object, doi->doi_bonus_type, | |
1740 | drro->drr_bonustype, bonus_data, &is_same_gen); | |
1741 | if (err != 0) | |
1742 | return (SET_ERROR(EINVAL)); | |
1743 | ||
1744 | if (is_same_gen) { | |
1745 | /* | |
1746 | * This is the same logical file, and | |
1747 | * the block size must be increasing. | |
1748 | * It could only decrease if | |
1749 | * --large-block was changed to be | |
1750 | * off, which is checked in | |
1751 | * recv_check_large_blocks(). | |
1752 | */ | |
1753 | if (drro->drr_blksz <= | |
1754 | doi->doi_data_block_size) | |
1755 | return (SET_ERROR(EINVAL)); | |
1756 | /* | |
1757 | * We keep the existing blocksize and | |
1758 | * contents. | |
1759 | */ | |
1760 | *new_blksz = | |
1761 | doi->doi_data_block_size; | |
1762 | } else { | |
1763 | do_free_range = B_TRUE; | |
1764 | } | |
1765 | } | |
1766 | } | |
1767 | ||
1768 | /* nblkptr can only decrease if the object was reallocated */ | |
1769 | if (nblkptr < doi->doi_nblkptr) | |
1770 | do_free_range = B_TRUE; | |
1771 | ||
1772 | /* number of slots can only change on reallocation */ | |
1773 | if (dn_slots != doi->doi_dnodesize >> DNODE_SHIFT) | |
1774 | do_free_range = B_TRUE; | |
1775 | ||
1776 | /* | |
1777 | * For raw sends we also check a few other fields to | |
1778 | * ensure we are preserving the objset structure exactly | |
1779 | * as it was on the receive side: | |
1780 | * - A changed indirect block size | |
1781 | * - A smaller nlevels | |
1782 | */ | |
1783 | if (rwa->raw) { | |
1784 | if (indblksz != doi->doi_metadata_block_size) | |
1785 | do_free_range = B_TRUE; | |
1786 | if (drro->drr_nlevels < doi->doi_indirection) | |
1787 | do_free_range = B_TRUE; | |
1788 | } | |
1789 | ||
1790 | if (do_free_range) { | |
1791 | err = dmu_free_long_range(rwa->os, drro->drr_object, | |
1792 | 0, DMU_OBJECT_END); | |
1793 | if (err != 0) | |
1794 | return (SET_ERROR(EINVAL)); | |
1795 | } | |
1796 | ||
1797 | /* | |
c4e87421 AM |
1798 | * The dmu does not currently support decreasing nlevels or changing |
1799 | * indirect block size if there is already one, same as changing the | |
1800 | * number of of dnode slots on an object. For non-raw sends this | |
1801 | * does not matter and the new object can just use the previous one's | |
1802 | * parameters. For raw sends, however, the structure of the received | |
1803 | * dnode (including indirects and dnode slots) must match that of the | |
1804 | * send side. Therefore, instead of using dmu_object_reclaim(), we | |
1805 | * must free the object completely and call dmu_object_claim_dnsize() | |
1806 | * instead. | |
7bcb7f08 | 1807 | */ |
c4e87421 AM |
1808 | if ((rwa->raw && ((doi->doi_indirection > 1 && |
1809 | indblksz != doi->doi_metadata_block_size) || | |
1810 | drro->drr_nlevels < doi->doi_indirection)) || | |
7bcb7f08 MA |
1811 | dn_slots != doi->doi_dnodesize >> DNODE_SHIFT) { |
1812 | err = dmu_free_long_object(rwa->os, drro->drr_object); | |
1813 | if (err != 0) | |
1814 | return (SET_ERROR(EINVAL)); | |
1815 | ||
1816 | txg_wait_synced(dmu_objset_pool(rwa->os), 0); | |
1817 | *object_to_hold = DMU_NEW_OBJECT; | |
1818 | } | |
1819 | ||
1820 | /* | |
1821 | * For raw receives, free everything beyond the new incoming | |
1822 | * maxblkid. Normally this would be done with a DRR_FREE | |
1823 | * record that would come after this DRR_OBJECT record is | |
1824 | * processed. However, for raw receives we manually set the | |
1825 | * maxblkid from the drr_maxblkid and so we must first free | |
1826 | * everything above that blkid to ensure the DMU is always | |
1827 | * consistent with itself. We will never free the first block | |
1828 | * of the object here because a maxblkid of 0 could indicate | |
1829 | * an object with a single block or one with no blocks. This | |
1830 | * free may be skipped when dmu_free_long_range() was called | |
1831 | * above since it covers the entire object's contents. | |
1832 | */ | |
1833 | if (rwa->raw && *object_to_hold != DMU_NEW_OBJECT && !do_free_range) { | |
1834 | err = dmu_free_long_range(rwa->os, drro->drr_object, | |
1835 | (drro->drr_maxblkid + 1) * doi->doi_data_block_size, | |
1836 | DMU_OBJECT_END); | |
1837 | if (err != 0) | |
1838 | return (SET_ERROR(EINVAL)); | |
1839 | } | |
1840 | return (0); | |
1841 | } | |
1842 | ||
03916905 PD |
1843 | noinline static int |
1844 | receive_object(struct receive_writer_arg *rwa, struct drr_object *drro, | |
1845 | void *data) | |
1846 | { | |
1847 | dmu_object_info_t doi; | |
1848 | dmu_tx_t *tx; | |
03916905 | 1849 | int err; |
7bcb7f08 | 1850 | uint32_t new_blksz = drro->drr_blksz; |
03916905 PD |
1851 | uint8_t dn_slots = drro->drr_dn_slots != 0 ? |
1852 | drro->drr_dn_slots : DNODE_MIN_SLOTS; | |
1853 | ||
1854 | if (drro->drr_type == DMU_OT_NONE || | |
1855 | !DMU_OT_IS_VALID(drro->drr_type) || | |
1856 | !DMU_OT_IS_VALID(drro->drr_bonustype) || | |
1857 | drro->drr_checksumtype >= ZIO_CHECKSUM_FUNCTIONS || | |
1858 | drro->drr_compress >= ZIO_COMPRESS_FUNCTIONS || | |
1859 | P2PHASE(drro->drr_blksz, SPA_MINBLOCKSIZE) || | |
1860 | drro->drr_blksz < SPA_MINBLOCKSIZE || | |
1861 | drro->drr_blksz > spa_maxblocksize(dmu_objset_spa(rwa->os)) || | |
1862 | drro->drr_bonuslen > | |
1863 | DN_BONUS_SIZE(spa_maxdnodesize(dmu_objset_spa(rwa->os))) || | |
1864 | dn_slots > | |
30af21b0 | 1865 | (spa_maxdnodesize(dmu_objset_spa(rwa->os)) >> DNODE_SHIFT)) { |
03916905 PD |
1866 | return (SET_ERROR(EINVAL)); |
1867 | } | |
1868 | ||
1869 | if (rwa->raw) { | |
1870 | /* | |
1871 | * We should have received a DRR_OBJECT_RANGE record | |
1872 | * containing this block and stored it in rwa. | |
1873 | */ | |
1874 | if (drro->drr_object < rwa->or_firstobj || | |
1875 | drro->drr_object >= rwa->or_firstobj + rwa->or_numslots || | |
1876 | drro->drr_raw_bonuslen < drro->drr_bonuslen || | |
1877 | drro->drr_indblkshift > SPA_MAXBLOCKSHIFT || | |
1878 | drro->drr_nlevels > DN_MAX_LEVELS || | |
1879 | drro->drr_nblkptr > DN_MAX_NBLKPTR || | |
1880 | DN_SLOTS_TO_BONUSLEN(dn_slots) < | |
1881 | drro->drr_raw_bonuslen) | |
1882 | return (SET_ERROR(EINVAL)); | |
1883 | } else { | |
caf9dd20 BB |
1884 | /* |
1885 | * The DRR_OBJECT_SPILL flag is valid when the DRR_BEGIN | |
1886 | * record indicates this by setting DRR_FLAG_SPILL_BLOCK. | |
1887 | */ | |
1888 | if (((drro->drr_flags & ~(DRR_OBJECT_SPILL))) || | |
1889 | (!rwa->spill && DRR_OBJECT_HAS_SPILL(drro->drr_flags))) { | |
1890 | return (SET_ERROR(EINVAL)); | |
1891 | } | |
1892 | ||
1893 | if (drro->drr_raw_bonuslen != 0 || drro->drr_nblkptr != 0 || | |
1894 | drro->drr_indblkshift != 0 || drro->drr_nlevels != 0) { | |
03916905 | 1895 | return (SET_ERROR(EINVAL)); |
caf9dd20 | 1896 | } |
03916905 PD |
1897 | } |
1898 | ||
1899 | err = dmu_object_info(rwa->os, drro->drr_object, &doi); | |
30af21b0 | 1900 | |
03916905 PD |
1901 | if (err != 0 && err != ENOENT && err != EEXIST) |
1902 | return (SET_ERROR(EINVAL)); | |
1903 | ||
1904 | if (drro->drr_object > rwa->max_object) | |
1905 | rwa->max_object = drro->drr_object; | |
1906 | ||
1907 | /* | |
1908 | * If we are losing blkptrs or changing the block size this must | |
1909 | * be a new file instance. We must clear out the previous file | |
1910 | * contents before we can change this type of metadata in the dnode. | |
1911 | * Raw receives will also check that the indirect structure of the | |
1912 | * dnode hasn't changed. | |
1913 | */ | |
7bcb7f08 | 1914 | uint64_t object_to_hold; |
03916905 | 1915 | if (err == 0) { |
7bcb7f08 MA |
1916 | err = receive_handle_existing_object(rwa, drro, &doi, data, |
1917 | &object_to_hold, &new_blksz); | |
2a493a4c RY |
1918 | if (err != 0) |
1919 | return (err); | |
03916905 PD |
1920 | } else if (err == EEXIST) { |
1921 | /* | |
1922 | * The object requested is currently an interior slot of a | |
1923 | * multi-slot dnode. This will be resolved when the next txg | |
1924 | * is synced out, since the send stream will have told us | |
1925 | * to free this slot when we freed the associated dnode | |
1926 | * earlier in the stream. | |
1927 | */ | |
1928 | txg_wait_synced(dmu_objset_pool(rwa->os), 0); | |
b92f5d9f BB |
1929 | |
1930 | if (dmu_object_info(rwa->os, drro->drr_object, NULL) != ENOENT) | |
1931 | return (SET_ERROR(EINVAL)); | |
1932 | ||
1933 | /* object was freed and we are about to allocate a new one */ | |
7bcb7f08 | 1934 | object_to_hold = DMU_NEW_OBJECT; |
03916905 | 1935 | } else { |
37a27b43 DH |
1936 | /* |
1937 | * If the only record in this range so far was DRR_FREEOBJECTS | |
1938 | * with at least one actually freed object, it's possible that | |
1939 | * the block will now be converted to a hole. We need to wait | |
1940 | * for the txg to sync to prevent races. | |
1941 | */ | |
1942 | if (rwa->or_need_sync == ORNS_YES) | |
1943 | txg_wait_synced(dmu_objset_pool(rwa->os), 0); | |
1944 | ||
03916905 | 1945 | /* object is free and we are about to allocate a new one */ |
7bcb7f08 | 1946 | object_to_hold = DMU_NEW_OBJECT; |
03916905 PD |
1947 | } |
1948 | ||
37a27b43 DH |
1949 | /* Only relevant for the first object in the range */ |
1950 | rwa->or_need_sync = ORNS_NO; | |
1951 | ||
03916905 PD |
1952 | /* |
1953 | * If this is a multi-slot dnode there is a chance that this | |
1954 | * object will expand into a slot that is already used by | |
1955 | * another object from the previous snapshot. We must free | |
1956 | * these objects before we attempt to allocate the new dnode. | |
1957 | */ | |
1958 | if (dn_slots > 1) { | |
1959 | boolean_t need_sync = B_FALSE; | |
1960 | ||
1961 | for (uint64_t slot = drro->drr_object + 1; | |
1962 | slot < drro->drr_object + dn_slots; | |
1963 | slot++) { | |
1964 | dmu_object_info_t slot_doi; | |
1965 | ||
1966 | err = dmu_object_info(rwa->os, slot, &slot_doi); | |
1967 | if (err == ENOENT || err == EEXIST) | |
1968 | continue; | |
1969 | else if (err != 0) | |
1970 | return (err); | |
1971 | ||
1972 | err = dmu_free_long_object(rwa->os, slot); | |
03916905 PD |
1973 | if (err != 0) |
1974 | return (err); | |
1975 | ||
1976 | need_sync = B_TRUE; | |
1977 | } | |
1978 | ||
1979 | if (need_sync) | |
1980 | txg_wait_synced(dmu_objset_pool(rwa->os), 0); | |
1981 | } | |
1982 | ||
1983 | tx = dmu_tx_create(rwa->os); | |
7bcb7f08 MA |
1984 | dmu_tx_hold_bonus(tx, object_to_hold); |
1985 | dmu_tx_hold_write(tx, object_to_hold, 0, 0); | |
03916905 PD |
1986 | err = dmu_tx_assign(tx, TXG_WAIT); |
1987 | if (err != 0) { | |
1988 | dmu_tx_abort(tx); | |
1989 | return (err); | |
1990 | } | |
1991 | ||
7bcb7f08 | 1992 | if (object_to_hold == DMU_NEW_OBJECT) { |
caf9dd20 | 1993 | /* Currently free, wants to be allocated */ |
03916905 | 1994 | err = dmu_object_claim_dnsize(rwa->os, drro->drr_object, |
7bcb7f08 | 1995 | drro->drr_type, new_blksz, |
03916905 PD |
1996 | drro->drr_bonustype, drro->drr_bonuslen, |
1997 | dn_slots << DNODE_SHIFT, tx); | |
1998 | } else if (drro->drr_type != doi.doi_type || | |
7bcb7f08 | 1999 | new_blksz != doi.doi_data_block_size || |
03916905 PD |
2000 | drro->drr_bonustype != doi.doi_bonus_type || |
2001 | drro->drr_bonuslen != doi.doi_bonus_size) { | |
caf9dd20 | 2002 | /* Currently allocated, but with different properties */ |
03916905 | 2003 | err = dmu_object_reclaim_dnsize(rwa->os, drro->drr_object, |
7bcb7f08 | 2004 | drro->drr_type, new_blksz, |
03916905 | 2005 | drro->drr_bonustype, drro->drr_bonuslen, |
caf9dd20 BB |
2006 | dn_slots << DNODE_SHIFT, rwa->spill ? |
2007 | DRR_OBJECT_HAS_SPILL(drro->drr_flags) : B_FALSE, tx); | |
2008 | } else if (rwa->spill && !DRR_OBJECT_HAS_SPILL(drro->drr_flags)) { | |
2009 | /* | |
2010 | * Currently allocated, the existing version of this object | |
2011 | * may reference a spill block that is no longer allocated | |
2012 | * at the source and needs to be freed. | |
2013 | */ | |
2014 | err = dmu_object_rm_spill(rwa->os, drro->drr_object, tx); | |
03916905 | 2015 | } |
3fa93bb8 | 2016 | |
03916905 PD |
2017 | if (err != 0) { |
2018 | dmu_tx_commit(tx); | |
2019 | return (SET_ERROR(EINVAL)); | |
2020 | } | |
2021 | ||
2022 | if (rwa->or_crypt_params_present) { | |
2023 | /* | |
2024 | * Set the crypt params for the buffer associated with this | |
2025 | * range of dnodes. This causes the blkptr_t to have the | |
2026 | * same crypt params (byteorder, salt, iv, mac) as on the | |
2027 | * sending side. | |
2028 | * | |
2029 | * Since we are committing this tx now, it is possible for | |
2030 | * the dnode block to end up on-disk with the incorrect MAC, | |
2031 | * if subsequent objects in this block are received in a | |
2032 | * different txg. However, since the dataset is marked as | |
2033 | * inconsistent, no code paths will do a non-raw read (or | |
2034 | * decrypt the block / verify the MAC). The receive code and | |
2035 | * scrub code can safely do raw reads and verify the | |
2036 | * checksum. They don't need to verify the MAC. | |
2037 | */ | |
2038 | dmu_buf_t *db = NULL; | |
2039 | uint64_t offset = rwa->or_firstobj * DNODE_MIN_SIZE; | |
2040 | ||
2041 | err = dmu_buf_hold_by_dnode(DMU_META_DNODE(rwa->os), | |
2042 | offset, FTAG, &db, DMU_READ_PREFETCH | DMU_READ_NO_DECRYPT); | |
2043 | if (err != 0) { | |
2044 | dmu_tx_commit(tx); | |
2045 | return (SET_ERROR(EINVAL)); | |
2046 | } | |
2047 | ||
2048 | dmu_buf_set_crypt_params(db, rwa->or_byteorder, | |
2049 | rwa->or_salt, rwa->or_iv, rwa->or_mac, tx); | |
2050 | ||
2051 | dmu_buf_rele(db, FTAG); | |
2052 | ||
2053 | rwa->or_crypt_params_present = B_FALSE; | |
2054 | } | |
2055 | ||
2056 | dmu_object_set_checksum(rwa->os, drro->drr_object, | |
2057 | drro->drr_checksumtype, tx); | |
2058 | dmu_object_set_compress(rwa->os, drro->drr_object, | |
2059 | drro->drr_compress, tx); | |
2060 | ||
2061 | /* handle more restrictive dnode structuring for raw recvs */ | |
2062 | if (rwa->raw) { | |
2063 | /* | |
369aa501 TC |
2064 | * Set the indirect block size, block shift, nlevels. |
2065 | * This will not fail because we ensured all of the | |
2066 | * blocks were freed earlier if this is a new object. | |
2067 | * For non-new objects block size and indirect block | |
2068 | * shift cannot change and nlevels can only increase. | |
03916905 | 2069 | */ |
7bcb7f08 | 2070 | ASSERT3U(new_blksz, ==, drro->drr_blksz); |
03916905 PD |
2071 | VERIFY0(dmu_object_set_blocksize(rwa->os, drro->drr_object, |
2072 | drro->drr_blksz, drro->drr_indblkshift, tx)); | |
2073 | VERIFY0(dmu_object_set_nlevels(rwa->os, drro->drr_object, | |
2074 | drro->drr_nlevels, tx)); | |
369aa501 TC |
2075 | |
2076 | /* | |
c2c6eadf TC |
2077 | * Set the maxblkid. This will always succeed because |
2078 | * we freed all blocks beyond the new maxblkid above. | |
369aa501 | 2079 | */ |
03916905 PD |
2080 | VERIFY0(dmu_object_set_maxblkid(rwa->os, drro->drr_object, |
2081 | drro->drr_maxblkid, tx)); | |
2082 | } | |
2083 | ||
2084 | if (data != NULL) { | |
2085 | dmu_buf_t *db; | |
6955b401 | 2086 | dnode_t *dn; |
03916905 PD |
2087 | uint32_t flags = DMU_READ_NO_PREFETCH; |
2088 | ||
2089 | if (rwa->raw) | |
2090 | flags |= DMU_READ_NO_DECRYPT; | |
2091 | ||
6955b401 BB |
2092 | VERIFY0(dnode_hold(rwa->os, drro->drr_object, FTAG, &dn)); |
2093 | VERIFY0(dmu_bonus_hold_by_dnode(dn, FTAG, &db, flags)); | |
2094 | ||
03916905 PD |
2095 | dmu_buf_will_dirty(db, tx); |
2096 | ||
2097 | ASSERT3U(db->db_size, >=, drro->drr_bonuslen); | |
861166b0 | 2098 | memcpy(db->db_data, data, DRR_OBJECT_PAYLOAD_SIZE(drro)); |
03916905 PD |
2099 | |
2100 | /* | |
2101 | * Raw bonus buffers have their byteorder determined by the | |
2102 | * DRR_OBJECT_RANGE record. | |
2103 | */ | |
2104 | if (rwa->byteswap && !rwa->raw) { | |
2105 | dmu_object_byteswap_t byteswap = | |
2106 | DMU_OT_BYTESWAP(drro->drr_bonustype); | |
2107 | dmu_ot_byteswap[byteswap].ob_func(db->db_data, | |
2108 | DRR_OBJECT_PAYLOAD_SIZE(drro)); | |
2109 | } | |
2110 | dmu_buf_rele(db, FTAG); | |
6955b401 | 2111 | dnode_rele(dn, FTAG); |
03916905 PD |
2112 | } |
2113 | dmu_tx_commit(tx); | |
2114 | ||
2115 | return (0); | |
2116 | } | |
2117 | ||
03916905 PD |
2118 | noinline static int |
2119 | receive_freeobjects(struct receive_writer_arg *rwa, | |
2120 | struct drr_freeobjects *drrfo) | |
2121 | { | |
2122 | uint64_t obj; | |
2123 | int next_err = 0; | |
2124 | ||
2125 | if (drrfo->drr_firstobj + drrfo->drr_numobjs < drrfo->drr_firstobj) | |
2126 | return (SET_ERROR(EINVAL)); | |
2127 | ||
2128 | for (obj = drrfo->drr_firstobj == 0 ? 1 : drrfo->drr_firstobj; | |
30af21b0 PD |
2129 | obj < drrfo->drr_firstobj + drrfo->drr_numobjs && |
2130 | obj < DN_MAX_OBJECT && next_err == 0; | |
03916905 PD |
2131 | next_err = dmu_object_next(rwa->os, &obj, FALSE, 0)) { |
2132 | dmu_object_info_t doi; | |
2133 | int err; | |
2134 | ||
2135 | err = dmu_object_info(rwa->os, obj, &doi); | |
2136 | if (err == ENOENT) | |
2137 | continue; | |
2138 | else if (err != 0) | |
2139 | return (err); | |
2140 | ||
2141 | err = dmu_free_long_object(rwa->os, obj); | |
2142 | ||
2143 | if (err != 0) | |
2144 | return (err); | |
37a27b43 DH |
2145 | |
2146 | if (rwa->or_need_sync == ORNS_MAYBE) | |
2147 | rwa->or_need_sync = ORNS_YES; | |
03916905 PD |
2148 | } |
2149 | if (next_err != ESRCH) | |
2150 | return (next_err); | |
2151 | return (0); | |
2152 | } | |
2153 | ||
7261fc2e MA |
2154 | /* |
2155 | * Note: if this fails, the caller will clean up any records left on the | |
2156 | * rwa->write_batch list. | |
2157 | */ | |
2158 | static int | |
2159 | flush_write_batch_impl(struct receive_writer_arg *rwa) | |
03916905 | 2160 | { |
03916905 | 2161 | dnode_t *dn; |
7261fc2e MA |
2162 | int err; |
2163 | ||
2164 | if (dnode_hold(rwa->os, rwa->last_object, FTAG, &dn) != 0) | |
2165 | return (SET_ERROR(EINVAL)); | |
2166 | ||
2167 | struct receive_record_arg *last_rrd = list_tail(&rwa->write_batch); | |
2168 | struct drr_write *last_drrw = &last_rrd->header.drr_u.drr_write; | |
2169 | ||
2170 | struct receive_record_arg *first_rrd = list_head(&rwa->write_batch); | |
2171 | struct drr_write *first_drrw = &first_rrd->header.drr_u.drr_write; | |
2172 | ||
2173 | ASSERT3U(rwa->last_object, ==, last_drrw->drr_object); | |
2174 | ASSERT3U(rwa->last_offset, ==, last_drrw->drr_offset); | |
2175 | ||
2176 | dmu_tx_t *tx = dmu_tx_create(rwa->os); | |
2177 | dmu_tx_hold_write_by_dnode(tx, dn, first_drrw->drr_offset, | |
2178 | last_drrw->drr_offset - first_drrw->drr_offset + | |
2179 | last_drrw->drr_logical_size); | |
2180 | err = dmu_tx_assign(tx, TXG_WAIT); | |
2181 | if (err != 0) { | |
2182 | dmu_tx_abort(tx); | |
2183 | dnode_rele(dn, FTAG); | |
2184 | return (err); | |
2185 | } | |
2186 | ||
2187 | struct receive_record_arg *rrd; | |
2188 | while ((rrd = list_head(&rwa->write_batch)) != NULL) { | |
2189 | struct drr_write *drrw = &rrd->header.drr_u.drr_write; | |
ba67d821 | 2190 | abd_t *abd = rrd->abd; |
7261fc2e MA |
2191 | |
2192 | ASSERT3U(drrw->drr_object, ==, rwa->last_object); | |
2193 | ||
ba67d821 MA |
2194 | if (drrw->drr_logical_size != dn->dn_datablksz) { |
2195 | /* | |
2196 | * The WRITE record is larger than the object's block | |
2197 | * size. We must be receiving an incremental | |
2198 | * large-block stream into a dataset that previously did | |
2199 | * a non-large-block receive. Lightweight writes must | |
2200 | * be exactly one block, so we need to decompress the | |
2201 | * data (if compressed) and do a normal dmu_write(). | |
2202 | */ | |
7bcb7f08 | 2203 | ASSERT3U(drrw->drr_logical_size, >, dn->dn_datablksz); |
ba67d821 MA |
2204 | if (DRR_WRITE_COMPRESSED(drrw)) { |
2205 | abd_t *decomp_abd = | |
2206 | abd_alloc_linear(drrw->drr_logical_size, | |
2207 | B_FALSE); | |
2208 | ||
2209 | err = zio_decompress_data( | |
2210 | drrw->drr_compressiontype, | |
2211 | abd, abd_to_buf(decomp_abd), | |
2212 | abd_get_size(abd), | |
2213 | abd_get_size(decomp_abd), NULL); | |
2214 | ||
2215 | if (err == 0) { | |
2216 | dmu_write_by_dnode(dn, | |
2217 | drrw->drr_offset, | |
2218 | drrw->drr_logical_size, | |
2219 | abd_to_buf(decomp_abd), tx); | |
2220 | } | |
2221 | abd_free(decomp_abd); | |
2222 | } else { | |
2223 | dmu_write_by_dnode(dn, | |
2224 | drrw->drr_offset, | |
2225 | drrw->drr_logical_size, | |
2226 | abd_to_buf(abd), tx); | |
2227 | } | |
2228 | if (err == 0) | |
2229 | abd_free(abd); | |
2230 | } else { | |
24e61911 | 2231 | zio_prop_t zp = {0}; |
ba67d821 MA |
2232 | dmu_write_policy(rwa->os, dn, 0, 0, &zp); |
2233 | ||
4938d01d | 2234 | zio_flag_t zio_flags = 0; |
ba67d821 MA |
2235 | |
2236 | if (rwa->raw) { | |
2237 | zp.zp_encrypt = B_TRUE; | |
2238 | zp.zp_compress = drrw->drr_compressiontype; | |
2239 | zp.zp_byteorder = ZFS_HOST_BYTEORDER ^ | |
2240 | !!DRR_IS_RAW_BYTESWAPPED(drrw->drr_flags) ^ | |
2241 | rwa->byteswap; | |
861166b0 | 2242 | memcpy(zp.zp_salt, drrw->drr_salt, |
ba67d821 | 2243 | ZIO_DATA_SALT_LEN); |
861166b0 | 2244 | memcpy(zp.zp_iv, drrw->drr_iv, |
ba67d821 | 2245 | ZIO_DATA_IV_LEN); |
861166b0 | 2246 | memcpy(zp.zp_mac, drrw->drr_mac, |
ba67d821 MA |
2247 | ZIO_DATA_MAC_LEN); |
2248 | if (DMU_OT_IS_ENCRYPTED(zp.zp_type)) { | |
2249 | zp.zp_nopwrite = B_FALSE; | |
2250 | zp.zp_copies = MIN(zp.zp_copies, | |
2251 | SPA_DVAS_PER_BP - 1); | |
2252 | } | |
2253 | zio_flags |= ZIO_FLAG_RAW; | |
2254 | } else if (DRR_WRITE_COMPRESSED(drrw)) { | |
2255 | ASSERT3U(drrw->drr_compressed_size, >, 0); | |
2256 | ASSERT3U(drrw->drr_logical_size, >=, | |
2257 | drrw->drr_compressed_size); | |
2258 | zp.zp_compress = drrw->drr_compressiontype; | |
2259 | zio_flags |= ZIO_FLAG_RAW_COMPRESS; | |
2260 | } else if (rwa->byteswap) { | |
2261 | /* | |
2262 | * Note: compressed blocks never need to be | |
2263 | * byteswapped, because WRITE records for | |
2264 | * metadata blocks are never compressed. The | |
2265 | * exception is raw streams, which are written | |
2266 | * in the original byteorder, and the byteorder | |
2267 | * bit is preserved in the BP by setting | |
2268 | * zp_byteorder above. | |
2269 | */ | |
2270 | dmu_object_byteswap_t byteswap = | |
2271 | DMU_OT_BYTESWAP(drrw->drr_type); | |
2272 | dmu_ot_byteswap[byteswap].ob_func( | |
2273 | abd_to_buf(abd), | |
2274 | DRR_WRITE_PAYLOAD_SIZE(drrw)); | |
2275 | } | |
7bcb7f08 MA |
2276 | |
2277 | /* | |
ba67d821 MA |
2278 | * Since this data can't be read until the receive |
2279 | * completes, we can do a "lightweight" write for | |
2280 | * improved performance. | |
7bcb7f08 | 2281 | */ |
ba67d821 MA |
2282 | err = dmu_lightweight_write_by_dnode(dn, |
2283 | drrw->drr_offset, abd, &zp, zio_flags, tx); | |
7bcb7f08 MA |
2284 | } |
2285 | ||
7261fc2e MA |
2286 | if (err != 0) { |
2287 | /* | |
2288 | * This rrd is left on the list, so the caller will | |
ba67d821 | 2289 | * free it (and the abd). |
7261fc2e MA |
2290 | */ |
2291 | break; | |
2292 | } | |
2293 | ||
2294 | /* | |
2295 | * Note: If the receive fails, we want the resume stream to | |
2296 | * start with the same record that we last successfully | |
2297 | * received (as opposed to the next record), so that we can | |
2298 | * verify that we are resuming from the correct location. | |
2299 | */ | |
2300 | save_resume_state(rwa, drrw->drr_object, drrw->drr_offset, tx); | |
2301 | ||
2302 | list_remove(&rwa->write_batch, rrd); | |
2303 | kmem_free(rrd, sizeof (*rrd)); | |
2304 | } | |
2305 | ||
2306 | dmu_tx_commit(tx); | |
2307 | dnode_rele(dn, FTAG); | |
2308 | return (err); | |
2309 | } | |
2310 | ||
2311 | noinline static int | |
2312 | flush_write_batch(struct receive_writer_arg *rwa) | |
2313 | { | |
2314 | if (list_is_empty(&rwa->write_batch)) | |
2315 | return (0); | |
2316 | int err = rwa->err; | |
2317 | if (err == 0) | |
2318 | err = flush_write_batch_impl(rwa); | |
2319 | if (err != 0) { | |
2320 | struct receive_record_arg *rrd; | |
2321 | while ((rrd = list_remove_head(&rwa->write_batch)) != NULL) { | |
ba67d821 | 2322 | abd_free(rrd->abd); |
7261fc2e MA |
2323 | kmem_free(rrd, sizeof (*rrd)); |
2324 | } | |
2325 | } | |
2326 | ASSERT(list_is_empty(&rwa->write_batch)); | |
2327 | return (err); | |
2328 | } | |
2329 | ||
2330 | noinline static int | |
2331 | receive_process_write_record(struct receive_writer_arg *rwa, | |
2332 | struct receive_record_arg *rrd) | |
2333 | { | |
2334 | int err = 0; | |
2335 | ||
2336 | ASSERT3U(rrd->header.drr_type, ==, DRR_WRITE); | |
2337 | struct drr_write *drrw = &rrd->header.drr_u.drr_write; | |
03916905 PD |
2338 | |
2339 | if (drrw->drr_offset + drrw->drr_logical_size < drrw->drr_offset || | |
2340 | !DMU_OT_IS_VALID(drrw->drr_type)) | |
2341 | return (SET_ERROR(EINVAL)); | |
2342 | ||
e8cf3a4f AP |
2343 | if (rwa->heal) { |
2344 | blkptr_t *bp; | |
2345 | dmu_buf_t *dbp; | |
2346 | dnode_t *dn; | |
2347 | int flags = DB_RF_CANFAIL; | |
2348 | ||
2349 | if (rwa->raw) | |
2350 | flags |= DB_RF_NO_DECRYPT; | |
2351 | ||
2352 | if (rwa->byteswap) { | |
2353 | dmu_object_byteswap_t byteswap = | |
2354 | DMU_OT_BYTESWAP(drrw->drr_type); | |
2355 | dmu_ot_byteswap[byteswap].ob_func(abd_to_buf(rrd->abd), | |
2356 | DRR_WRITE_PAYLOAD_SIZE(drrw)); | |
2357 | } | |
2358 | ||
2359 | err = dmu_buf_hold_noread(rwa->os, drrw->drr_object, | |
2360 | drrw->drr_offset, FTAG, &dbp); | |
2361 | if (err != 0) | |
2362 | return (err); | |
2363 | ||
2364 | /* Try to read the object to see if it needs healing */ | |
2365 | err = dbuf_read((dmu_buf_impl_t *)dbp, NULL, flags); | |
2366 | /* | |
2367 | * We only try to heal when dbuf_read() returns a ECKSUMs. | |
2368 | * Other errors (even EIO) get returned to caller. | |
2369 | * EIO indicates that the device is not present/accessible, | |
2370 | * so writing to it will likely fail. | |
2371 | * If the block is healthy, we don't want to overwrite it | |
2372 | * unnecessarily. | |
2373 | */ | |
2374 | if (err != ECKSUM) { | |
2375 | dmu_buf_rele(dbp, FTAG); | |
2376 | return (err); | |
2377 | } | |
2378 | dn = dmu_buf_dnode_enter(dbp); | |
2379 | /* Make sure the on-disk block and recv record sizes match */ | |
2380 | if (drrw->drr_logical_size != | |
2381 | dn->dn_datablkszsec << SPA_MINBLOCKSHIFT) { | |
2382 | err = ENOTSUP; | |
2383 | dmu_buf_dnode_exit(dbp); | |
2384 | dmu_buf_rele(dbp, FTAG); | |
2385 | return (err); | |
2386 | } | |
2387 | /* Get the block pointer for the corrupted block */ | |
2388 | bp = dmu_buf_get_blkptr(dbp); | |
2389 | err = do_corrective_recv(rwa, drrw, rrd, bp); | |
2390 | dmu_buf_dnode_exit(dbp); | |
2391 | dmu_buf_rele(dbp, FTAG); | |
2392 | return (err); | |
2393 | } | |
2394 | ||
03916905 PD |
2395 | /* |
2396 | * For resuming to work, records must be in increasing order | |
2397 | * by (object, offset). | |
2398 | */ | |
2399 | if (drrw->drr_object < rwa->last_object || | |
2400 | (drrw->drr_object == rwa->last_object && | |
2401 | drrw->drr_offset < rwa->last_offset)) { | |
2402 | return (SET_ERROR(EINVAL)); | |
2403 | } | |
7261fc2e MA |
2404 | |
2405 | struct receive_record_arg *first_rrd = list_head(&rwa->write_batch); | |
2406 | struct drr_write *first_drrw = &first_rrd->header.drr_u.drr_write; | |
2407 | uint64_t batch_size = | |
2408 | MIN(zfs_recv_write_batch_size, DMU_MAX_ACCESS / 2); | |
2409 | if (first_rrd != NULL && | |
2410 | (drrw->drr_object != first_drrw->drr_object || | |
2411 | drrw->drr_offset >= first_drrw->drr_offset + batch_size)) { | |
2412 | err = flush_write_batch(rwa); | |
2413 | if (err != 0) | |
2414 | return (err); | |
2415 | } | |
2416 | ||
03916905 PD |
2417 | rwa->last_object = drrw->drr_object; |
2418 | rwa->last_offset = drrw->drr_offset; | |
2419 | ||
2420 | if (rwa->last_object > rwa->max_object) | |
2421 | rwa->max_object = rwa->last_object; | |
2422 | ||
7261fc2e | 2423 | list_insert_tail(&rwa->write_batch, rrd); |
03916905 | 2424 | /* |
7261fc2e MA |
2425 | * Return EAGAIN to indicate that we will use this rrd again, |
2426 | * so the caller should not free it | |
03916905 | 2427 | */ |
7261fc2e | 2428 | return (EAGAIN); |
03916905 PD |
2429 | } |
2430 | ||
03916905 PD |
2431 | static int |
2432 | receive_write_embedded(struct receive_writer_arg *rwa, | |
2433 | struct drr_write_embedded *drrwe, void *data) | |
2434 | { | |
2435 | dmu_tx_t *tx; | |
2436 | int err; | |
2437 | ||
2438 | if (drrwe->drr_offset + drrwe->drr_length < drrwe->drr_offset) | |
2439 | return (SET_ERROR(EINVAL)); | |
2440 | ||
2441 | if (drrwe->drr_psize > BPE_PAYLOAD_SIZE) | |
2442 | return (SET_ERROR(EINVAL)); | |
2443 | ||
2444 | if (drrwe->drr_etype >= NUM_BP_EMBEDDED_TYPES) | |
2445 | return (SET_ERROR(EINVAL)); | |
2446 | if (drrwe->drr_compression >= ZIO_COMPRESS_FUNCTIONS) | |
2447 | return (SET_ERROR(EINVAL)); | |
2448 | if (rwa->raw) | |
2449 | return (SET_ERROR(EINVAL)); | |
2450 | ||
2451 | if (drrwe->drr_object > rwa->max_object) | |
2452 | rwa->max_object = drrwe->drr_object; | |
2453 | ||
2454 | tx = dmu_tx_create(rwa->os); | |
2455 | ||
2456 | dmu_tx_hold_write(tx, drrwe->drr_object, | |
2457 | drrwe->drr_offset, drrwe->drr_length); | |
2458 | err = dmu_tx_assign(tx, TXG_WAIT); | |
2459 | if (err != 0) { | |
2460 | dmu_tx_abort(tx); | |
2461 | return (err); | |
2462 | } | |
2463 | ||
2464 | dmu_write_embedded(rwa->os, drrwe->drr_object, | |
2465 | drrwe->drr_offset, data, drrwe->drr_etype, | |
2466 | drrwe->drr_compression, drrwe->drr_lsize, drrwe->drr_psize, | |
2467 | rwa->byteswap ^ ZFS_HOST_BYTEORDER, tx); | |
2468 | ||
2469 | /* See comment in restore_write. */ | |
2470 | save_resume_state(rwa, drrwe->drr_object, drrwe->drr_offset, tx); | |
2471 | dmu_tx_commit(tx); | |
2472 | return (0); | |
2473 | } | |
2474 | ||
2475 | static int | |
2476 | receive_spill(struct receive_writer_arg *rwa, struct drr_spill *drrs, | |
ba67d821 | 2477 | abd_t *abd) |
03916905 | 2478 | { |
03916905 PD |
2479 | dmu_buf_t *db, *db_spill; |
2480 | int err; | |
03916905 PD |
2481 | |
2482 | if (drrs->drr_length < SPA_MINBLOCKSIZE || | |
2483 | drrs->drr_length > spa_maxblocksize(dmu_objset_spa(rwa->os))) | |
2484 | return (SET_ERROR(EINVAL)); | |
2485 | ||
caf9dd20 BB |
2486 | /* |
2487 | * This is an unmodified spill block which was added to the stream | |
2488 | * to resolve an issue with incorrectly removing spill blocks. It | |
2489 | * should be ignored by current versions of the code which support | |
2490 | * the DRR_FLAG_SPILL_BLOCK flag. | |
2491 | */ | |
2492 | if (rwa->spill && DRR_SPILL_IS_UNMODIFIED(drrs->drr_flags)) { | |
ba67d821 | 2493 | abd_free(abd); |
caf9dd20 BB |
2494 | return (0); |
2495 | } | |
2496 | ||
03916905 PD |
2497 | if (rwa->raw) { |
2498 | if (!DMU_OT_IS_VALID(drrs->drr_type) || | |
2499 | drrs->drr_compressiontype >= ZIO_COMPRESS_FUNCTIONS || | |
2500 | drrs->drr_compressed_size == 0) | |
2501 | return (SET_ERROR(EINVAL)); | |
03916905 PD |
2502 | } |
2503 | ||
2504 | if (dmu_object_info(rwa->os, drrs->drr_object, NULL) != 0) | |
2505 | return (SET_ERROR(EINVAL)); | |
2506 | ||
2507 | if (drrs->drr_object > rwa->max_object) | |
2508 | rwa->max_object = drrs->drr_object; | |
2509 | ||
2510 | VERIFY0(dmu_bonus_hold(rwa->os, drrs->drr_object, FTAG, &db)); | |
2511 | if ((err = dmu_spill_hold_by_bonus(db, DMU_READ_NO_DECRYPT, FTAG, | |
2512 | &db_spill)) != 0) { | |
2513 | dmu_buf_rele(db, FTAG); | |
2514 | return (err); | |
2515 | } | |
2516 | ||
ba67d821 | 2517 | dmu_tx_t *tx = dmu_tx_create(rwa->os); |
03916905 PD |
2518 | |
2519 | dmu_tx_hold_spill(tx, db->db_object); | |
2520 | ||
2521 | err = dmu_tx_assign(tx, TXG_WAIT); | |
2522 | if (err != 0) { | |
2523 | dmu_buf_rele(db, FTAG); | |
2524 | dmu_buf_rele(db_spill, FTAG); | |
2525 | dmu_tx_abort(tx); | |
2526 | return (err); | |
2527 | } | |
2528 | ||
caf9dd20 BB |
2529 | /* |
2530 | * Spill blocks may both grow and shrink. When a change in size | |
2531 | * occurs any existing dbuf must be updated to match the logical | |
2532 | * size of the provided arc_buf_t. | |
2533 | */ | |
2534 | if (db_spill->db_size != drrs->drr_length) { | |
9b1677fb | 2535 | dmu_buf_will_fill(db_spill, tx, B_FALSE); |
ba67d821 | 2536 | VERIFY0(dbuf_spill_set_blksz(db_spill, |
03916905 | 2537 | drrs->drr_length, tx)); |
caf9dd20 | 2538 | } |
03916905 | 2539 | |
ba67d821 MA |
2540 | arc_buf_t *abuf; |
2541 | if (rwa->raw) { | |
2542 | boolean_t byteorder = ZFS_HOST_BYTEORDER ^ | |
2543 | !!DRR_IS_RAW_BYTESWAPPED(drrs->drr_flags) ^ | |
2544 | rwa->byteswap; | |
2545 | ||
2546 | abuf = arc_loan_raw_buf(dmu_objset_spa(rwa->os), | |
2547 | drrs->drr_object, byteorder, drrs->drr_salt, | |
2548 | drrs->drr_iv, drrs->drr_mac, drrs->drr_type, | |
2549 | drrs->drr_compressed_size, drrs->drr_length, | |
2550 | drrs->drr_compressiontype, 0); | |
2551 | } else { | |
2552 | abuf = arc_loan_buf(dmu_objset_spa(rwa->os), | |
2553 | DMU_OT_IS_METADATA(drrs->drr_type), | |
2554 | drrs->drr_length); | |
2555 | if (rwa->byteswap) { | |
2556 | dmu_object_byteswap_t byteswap = | |
2557 | DMU_OT_BYTESWAP(drrs->drr_type); | |
2558 | dmu_ot_byteswap[byteswap].ob_func(abd_to_buf(abd), | |
2559 | DRR_SPILL_PAYLOAD_SIZE(drrs)); | |
2560 | } | |
03916905 PD |
2561 | } |
2562 | ||
861166b0 | 2563 | memcpy(abuf->b_data, abd_to_buf(abd), DRR_SPILL_PAYLOAD_SIZE(drrs)); |
ba67d821 | 2564 | abd_free(abd); |
03916905 PD |
2565 | dbuf_assign_arcbuf((dmu_buf_impl_t *)db_spill, abuf, tx); |
2566 | ||
2567 | dmu_buf_rele(db, FTAG); | |
2568 | dmu_buf_rele(db_spill, FTAG); | |
2569 | ||
2570 | dmu_tx_commit(tx); | |
2571 | return (0); | |
2572 | } | |
2573 | ||
03916905 PD |
2574 | noinline static int |
2575 | receive_free(struct receive_writer_arg *rwa, struct drr_free *drrf) | |
2576 | { | |
2577 | int err; | |
2578 | ||
30af21b0 | 2579 | if (drrf->drr_length != -1ULL && |
03916905 PD |
2580 | drrf->drr_offset + drrf->drr_length < drrf->drr_offset) |
2581 | return (SET_ERROR(EINVAL)); | |
2582 | ||
2583 | if (dmu_object_info(rwa->os, drrf->drr_object, NULL) != 0) | |
2584 | return (SET_ERROR(EINVAL)); | |
2585 | ||
2586 | if (drrf->drr_object > rwa->max_object) | |
2587 | rwa->max_object = drrf->drr_object; | |
2588 | ||
2589 | err = dmu_free_long_range(rwa->os, drrf->drr_object, | |
2590 | drrf->drr_offset, drrf->drr_length); | |
2591 | ||
2592 | return (err); | |
2593 | } | |
2594 | ||
2595 | static int | |
2596 | receive_object_range(struct receive_writer_arg *rwa, | |
2597 | struct drr_object_range *drror) | |
2598 | { | |
2599 | /* | |
2600 | * By default, we assume this block is in our native format | |
2601 | * (ZFS_HOST_BYTEORDER). We then take into account whether | |
2602 | * the send stream is byteswapped (rwa->byteswap). Finally, | |
2603 | * we need to byteswap again if this particular block was | |
2604 | * in non-native format on the send side. | |
2605 | */ | |
2606 | boolean_t byteorder = ZFS_HOST_BYTEORDER ^ rwa->byteswap ^ | |
2607 | !!DRR_IS_RAW_BYTESWAPPED(drror->drr_flags); | |
2608 | ||
2609 | /* | |
2610 | * Since dnode block sizes are constant, we should not need to worry | |
2611 | * about making sure that the dnode block size is the same on the | |
2612 | * sending and receiving sides for the time being. For non-raw sends, | |
2613 | * this does not matter (and in fact we do not send a DRR_OBJECT_RANGE | |
2614 | * record at all). Raw sends require this record type because the | |
2615 | * encryption parameters are used to protect an entire block of bonus | |
2616 | * buffers. If the size of dnode blocks ever becomes variable, | |
2617 | * handling will need to be added to ensure that dnode block sizes | |
2618 | * match on the sending and receiving side. | |
2619 | */ | |
2620 | if (drror->drr_numslots != DNODES_PER_BLOCK || | |
2621 | P2PHASE(drror->drr_firstobj, DNODES_PER_BLOCK) != 0 || | |
2622 | !rwa->raw) | |
2623 | return (SET_ERROR(EINVAL)); | |
2624 | ||
2625 | if (drror->drr_firstobj > rwa->max_object) | |
2626 | rwa->max_object = drror->drr_firstobj; | |
2627 | ||
2628 | /* | |
2629 | * The DRR_OBJECT_RANGE handling must be deferred to receive_object() | |
2630 | * so that the block of dnodes is not written out when it's empty, | |
2631 | * and converted to a HOLE BP. | |
2632 | */ | |
2633 | rwa->or_crypt_params_present = B_TRUE; | |
2634 | rwa->or_firstobj = drror->drr_firstobj; | |
2635 | rwa->or_numslots = drror->drr_numslots; | |
861166b0 AZ |
2636 | memcpy(rwa->or_salt, drror->drr_salt, ZIO_DATA_SALT_LEN); |
2637 | memcpy(rwa->or_iv, drror->drr_iv, ZIO_DATA_IV_LEN); | |
2638 | memcpy(rwa->or_mac, drror->drr_mac, ZIO_DATA_MAC_LEN); | |
03916905 PD |
2639 | rwa->or_byteorder = byteorder; |
2640 | ||
37a27b43 DH |
2641 | rwa->or_need_sync = ORNS_MAYBE; |
2642 | ||
03916905 PD |
2643 | return (0); |
2644 | } | |
2645 | ||
30af21b0 PD |
2646 | /* |
2647 | * Until we have the ability to redact large ranges of data efficiently, we | |
2648 | * process these records as frees. | |
2649 | */ | |
30af21b0 PD |
2650 | noinline static int |
2651 | receive_redact(struct receive_writer_arg *rwa, struct drr_redact *drrr) | |
2652 | { | |
2653 | struct drr_free drrf = {0}; | |
2654 | drrf.drr_length = drrr->drr_length; | |
2655 | drrf.drr_object = drrr->drr_object; | |
2656 | drrf.drr_offset = drrr->drr_offset; | |
2657 | drrf.drr_toguid = drrr->drr_toguid; | |
2658 | return (receive_free(rwa, &drrf)); | |
2659 | } | |
2660 | ||
03916905 PD |
2661 | /* used to destroy the drc_ds on error */ |
2662 | static void | |
2663 | dmu_recv_cleanup_ds(dmu_recv_cookie_t *drc) | |
2664 | { | |
2665 | dsl_dataset_t *ds = drc->drc_ds; | |
40ab927a | 2666 | ds_hold_flags_t dsflags; |
03916905 | 2667 | |
40ab927a | 2668 | dsflags = (drc->drc_raw) ? DS_HOLD_FLAG_NONE : DS_HOLD_FLAG_DECRYPT; |
03916905 PD |
2669 | /* |
2670 | * Wait for the txg sync before cleaning up the receive. For | |
2671 | * resumable receives, this ensures that our resume state has | |
2672 | * been written out to disk. For raw receives, this ensures | |
2673 | * that the user accounting code will not attempt to do anything | |
2674 | * after we stopped receiving the dataset. | |
2675 | */ | |
2676 | txg_wait_synced(ds->ds_dir->dd_pool, 0); | |
2677 | ds->ds_objset->os_raw_receive = B_FALSE; | |
2678 | ||
2679 | rrw_enter(&ds->ds_bp_rwlock, RW_READER, FTAG); | |
61152d10 TC |
2680 | if (drc->drc_resumable && drc->drc_should_save && |
2681 | !BP_IS_HOLE(dsl_dataset_get_blkptr(ds))) { | |
03916905 PD |
2682 | rrw_exit(&ds->ds_bp_rwlock, FTAG); |
2683 | dsl_dataset_disown(ds, dsflags, dmu_recv_tag); | |
2684 | } else { | |
2685 | char name[ZFS_MAX_DATASET_NAME_LEN]; | |
2686 | rrw_exit(&ds->ds_bp_rwlock, FTAG); | |
2687 | dsl_dataset_name(ds, name); | |
2688 | dsl_dataset_disown(ds, dsflags, dmu_recv_tag); | |
e8cf3a4f AP |
2689 | if (!drc->drc_heal) |
2690 | (void) dsl_destroy_head(name); | |
03916905 PD |
2691 | } |
2692 | } | |
2693 | ||
2694 | static void | |
30af21b0 | 2695 | receive_cksum(dmu_recv_cookie_t *drc, int len, void *buf) |
03916905 | 2696 | { |
30af21b0 PD |
2697 | if (drc->drc_byteswap) { |
2698 | (void) fletcher_4_incremental_byteswap(buf, len, | |
2699 | &drc->drc_cksum); | |
03916905 | 2700 | } else { |
30af21b0 | 2701 | (void) fletcher_4_incremental_native(buf, len, &drc->drc_cksum); |
03916905 PD |
2702 | } |
2703 | } | |
2704 | ||
2705 | /* | |
2706 | * Read the payload into a buffer of size len, and update the current record's | |
2707 | * payload field. | |
30af21b0 PD |
2708 | * Allocate drc->drc_next_rrd and read the next record's header into |
2709 | * drc->drc_next_rrd->header. | |
03916905 PD |
2710 | * Verify checksum of payload and next record. |
2711 | */ | |
2712 | static int | |
30af21b0 | 2713 | receive_read_payload_and_next_header(dmu_recv_cookie_t *drc, int len, void *buf) |
03916905 PD |
2714 | { |
2715 | int err; | |
03916905 PD |
2716 | |
2717 | if (len != 0) { | |
2718 | ASSERT3U(len, <=, SPA_MAXBLOCKSIZE); | |
30af21b0 | 2719 | err = receive_read(drc, len, buf); |
03916905 PD |
2720 | if (err != 0) |
2721 | return (err); | |
30af21b0 | 2722 | receive_cksum(drc, len, buf); |
03916905 PD |
2723 | |
2724 | /* note: rrd is NULL when reading the begin record's payload */ | |
30af21b0 PD |
2725 | if (drc->drc_rrd != NULL) { |
2726 | drc->drc_rrd->payload = buf; | |
2727 | drc->drc_rrd->payload_size = len; | |
2728 | drc->drc_rrd->bytes_read = drc->drc_bytes_read; | |
03916905 | 2729 | } |
960347d3 TC |
2730 | } else { |
2731 | ASSERT3P(buf, ==, NULL); | |
03916905 PD |
2732 | } |
2733 | ||
30af21b0 | 2734 | drc->drc_prev_cksum = drc->drc_cksum; |
03916905 | 2735 | |
30af21b0 PD |
2736 | drc->drc_next_rrd = kmem_zalloc(sizeof (*drc->drc_next_rrd), KM_SLEEP); |
2737 | err = receive_read(drc, sizeof (drc->drc_next_rrd->header), | |
2738 | &drc->drc_next_rrd->header); | |
2739 | drc->drc_next_rrd->bytes_read = drc->drc_bytes_read; | |
03916905 PD |
2740 | |
2741 | if (err != 0) { | |
30af21b0 PD |
2742 | kmem_free(drc->drc_next_rrd, sizeof (*drc->drc_next_rrd)); |
2743 | drc->drc_next_rrd = NULL; | |
03916905 PD |
2744 | return (err); |
2745 | } | |
30af21b0 PD |
2746 | if (drc->drc_next_rrd->header.drr_type == DRR_BEGIN) { |
2747 | kmem_free(drc->drc_next_rrd, sizeof (*drc->drc_next_rrd)); | |
2748 | drc->drc_next_rrd = NULL; | |
03916905 PD |
2749 | return (SET_ERROR(EINVAL)); |
2750 | } | |
2751 | ||
2752 | /* | |
2753 | * Note: checksum is of everything up to but not including the | |
2754 | * checksum itself. | |
2755 | */ | |
2756 | ASSERT3U(offsetof(dmu_replay_record_t, drr_u.drr_checksum.drr_checksum), | |
2757 | ==, sizeof (dmu_replay_record_t) - sizeof (zio_cksum_t)); | |
30af21b0 | 2758 | receive_cksum(drc, |
03916905 | 2759 | offsetof(dmu_replay_record_t, drr_u.drr_checksum.drr_checksum), |
30af21b0 | 2760 | &drc->drc_next_rrd->header); |
03916905 | 2761 | |
30af21b0 PD |
2762 | zio_cksum_t cksum_orig = |
2763 | drc->drc_next_rrd->header.drr_u.drr_checksum.drr_checksum; | |
2764 | zio_cksum_t *cksump = | |
2765 | &drc->drc_next_rrd->header.drr_u.drr_checksum.drr_checksum; | |
03916905 | 2766 | |
30af21b0 PD |
2767 | if (drc->drc_byteswap) |
2768 | byteswap_record(&drc->drc_next_rrd->header); | |
03916905 PD |
2769 | |
2770 | if ((!ZIO_CHECKSUM_IS_ZERO(cksump)) && | |
30af21b0 PD |
2771 | !ZIO_CHECKSUM_EQUAL(drc->drc_cksum, *cksump)) { |
2772 | kmem_free(drc->drc_next_rrd, sizeof (*drc->drc_next_rrd)); | |
2773 | drc->drc_next_rrd = NULL; | |
03916905 PD |
2774 | return (SET_ERROR(ECKSUM)); |
2775 | } | |
2776 | ||
30af21b0 | 2777 | receive_cksum(drc, sizeof (cksum_orig), &cksum_orig); |
03916905 PD |
2778 | |
2779 | return (0); | |
2780 | } | |
2781 | ||
03916905 PD |
2782 | /* |
2783 | * Issue the prefetch reads for any necessary indirect blocks. | |
2784 | * | |
2785 | * We use the object ignore list to tell us whether or not to issue prefetches | |
2786 | * for a given object. We do this for both correctness (in case the blocksize | |
2787 | * of an object has changed) and performance (if the object doesn't exist, don't | |
2788 | * needlessly try to issue prefetches). We also trim the list as we go through | |
2789 | * the stream to prevent it from growing to an unbounded size. | |
2790 | * | |
2791 | * The object numbers within will always be in sorted order, and any write | |
2792 | * records we see will also be in sorted order, but they're not sorted with | |
2793 | * respect to each other (i.e. we can get several object records before | |
2794 | * receiving each object's write records). As a result, once we've reached a | |
2795 | * given object number, we can safely remove any reference to lower object | |
2796 | * numbers in the ignore list. In practice, we receive up to 32 object records | |
2797 | * before receiving write records, so the list can have up to 32 nodes in it. | |
2798 | */ | |
03916905 | 2799 | static void |
30af21b0 PD |
2800 | receive_read_prefetch(dmu_recv_cookie_t *drc, uint64_t object, uint64_t offset, |
2801 | uint64_t length) | |
03916905 | 2802 | { |
30af21b0 PD |
2803 | if (!objlist_exists(drc->drc_ignore_objlist, object)) { |
2804 | dmu_prefetch(drc->drc_os, object, 1, offset, length, | |
03916905 PD |
2805 | ZIO_PRIORITY_SYNC_READ); |
2806 | } | |
2807 | } | |
2808 | ||
2809 | /* | |
2810 | * Read records off the stream, issuing any necessary prefetches. | |
2811 | */ | |
2812 | static int | |
30af21b0 | 2813 | receive_read_record(dmu_recv_cookie_t *drc) |
03916905 PD |
2814 | { |
2815 | int err; | |
2816 | ||
30af21b0 | 2817 | switch (drc->drc_rrd->header.drr_type) { |
03916905 PD |
2818 | case DRR_OBJECT: |
2819 | { | |
30af21b0 PD |
2820 | struct drr_object *drro = |
2821 | &drc->drc_rrd->header.drr_u.drr_object; | |
03916905 | 2822 | uint32_t size = DRR_OBJECT_PAYLOAD_SIZE(drro); |
960347d3 | 2823 | void *buf = NULL; |
03916905 PD |
2824 | dmu_object_info_t doi; |
2825 | ||
960347d3 TC |
2826 | if (size != 0) |
2827 | buf = kmem_zalloc(size, KM_SLEEP); | |
2828 | ||
30af21b0 | 2829 | err = receive_read_payload_and_next_header(drc, size, buf); |
03916905 PD |
2830 | if (err != 0) { |
2831 | kmem_free(buf, size); | |
2832 | return (err); | |
2833 | } | |
30af21b0 | 2834 | err = dmu_object_info(drc->drc_os, drro->drr_object, &doi); |
03916905 PD |
2835 | /* |
2836 | * See receive_read_prefetch for an explanation why we're | |
2837 | * storing this object in the ignore_obj_list. | |
2838 | */ | |
2839 | if (err == ENOENT || err == EEXIST || | |
2840 | (err == 0 && doi.doi_data_block_size != drro->drr_blksz)) { | |
30af21b0 PD |
2841 | objlist_insert(drc->drc_ignore_objlist, |
2842 | drro->drr_object); | |
03916905 PD |
2843 | err = 0; |
2844 | } | |
2845 | return (err); | |
2846 | } | |
2847 | case DRR_FREEOBJECTS: | |
2848 | { | |
30af21b0 | 2849 | err = receive_read_payload_and_next_header(drc, 0, NULL); |
03916905 PD |
2850 | return (err); |
2851 | } | |
2852 | case DRR_WRITE: | |
2853 | { | |
30af21b0 | 2854 | struct drr_write *drrw = &drc->drc_rrd->header.drr_u.drr_write; |
ba67d821 MA |
2855 | int size = DRR_WRITE_PAYLOAD_SIZE(drrw); |
2856 | abd_t *abd = abd_alloc_linear(size, B_FALSE); | |
2857 | err = receive_read_payload_and_next_header(drc, size, | |
2858 | abd_to_buf(abd)); | |
03916905 | 2859 | if (err != 0) { |
ba67d821 | 2860 | abd_free(abd); |
03916905 PD |
2861 | return (err); |
2862 | } | |
ba67d821 | 2863 | drc->drc_rrd->abd = abd; |
30af21b0 | 2864 | receive_read_prefetch(drc, drrw->drr_object, drrw->drr_offset, |
03916905 PD |
2865 | drrw->drr_logical_size); |
2866 | return (err); | |
2867 | } | |
03916905 PD |
2868 | case DRR_WRITE_EMBEDDED: |
2869 | { | |
2870 | struct drr_write_embedded *drrwe = | |
30af21b0 | 2871 | &drc->drc_rrd->header.drr_u.drr_write_embedded; |
03916905 PD |
2872 | uint32_t size = P2ROUNDUP(drrwe->drr_psize, 8); |
2873 | void *buf = kmem_zalloc(size, KM_SLEEP); | |
2874 | ||
30af21b0 | 2875 | err = receive_read_payload_and_next_header(drc, size, buf); |
03916905 PD |
2876 | if (err != 0) { |
2877 | kmem_free(buf, size); | |
2878 | return (err); | |
2879 | } | |
2880 | ||
30af21b0 | 2881 | receive_read_prefetch(drc, drrwe->drr_object, drrwe->drr_offset, |
03916905 PD |
2882 | drrwe->drr_length); |
2883 | return (err); | |
2884 | } | |
2885 | case DRR_FREE: | |
30af21b0 | 2886 | case DRR_REDACT: |
03916905 PD |
2887 | { |
2888 | /* | |
2889 | * It might be beneficial to prefetch indirect blocks here, but | |
2890 | * we don't really have the data to decide for sure. | |
2891 | */ | |
30af21b0 | 2892 | err = receive_read_payload_and_next_header(drc, 0, NULL); |
03916905 PD |
2893 | return (err); |
2894 | } | |
2895 | case DRR_END: | |
2896 | { | |
30af21b0 PD |
2897 | struct drr_end *drre = &drc->drc_rrd->header.drr_u.drr_end; |
2898 | if (!ZIO_CHECKSUM_EQUAL(drc->drc_prev_cksum, | |
2899 | drre->drr_checksum)) | |
03916905 PD |
2900 | return (SET_ERROR(ECKSUM)); |
2901 | return (0); | |
2902 | } | |
2903 | case DRR_SPILL: | |
2904 | { | |
30af21b0 | 2905 | struct drr_spill *drrs = &drc->drc_rrd->header.drr_u.drr_spill; |
ba67d821 MA |
2906 | int size = DRR_SPILL_PAYLOAD_SIZE(drrs); |
2907 | abd_t *abd = abd_alloc_linear(size, B_FALSE); | |
2908 | err = receive_read_payload_and_next_header(drc, size, | |
2909 | abd_to_buf(abd)); | |
30af21b0 | 2910 | if (err != 0) |
ba67d821 | 2911 | abd_free(abd); |
30af21b0 | 2912 | else |
ba67d821 | 2913 | drc->drc_rrd->abd = abd; |
03916905 PD |
2914 | return (err); |
2915 | } | |
2916 | case DRR_OBJECT_RANGE: | |
2917 | { | |
30af21b0 | 2918 | err = receive_read_payload_and_next_header(drc, 0, NULL); |
03916905 | 2919 | return (err); |
30af21b0 | 2920 | |
03916905 PD |
2921 | } |
2922 | default: | |
2923 | return (SET_ERROR(EINVAL)); | |
2924 | } | |
2925 | } | |
2926 | ||
30af21b0 PD |
2927 | |
2928 | ||
03916905 PD |
2929 | static void |
2930 | dprintf_drr(struct receive_record_arg *rrd, int err) | |
2931 | { | |
2932 | #ifdef ZFS_DEBUG | |
2933 | switch (rrd->header.drr_type) { | |
2934 | case DRR_OBJECT: | |
2935 | { | |
2936 | struct drr_object *drro = &rrd->header.drr_u.drr_object; | |
2937 | dprintf("drr_type = OBJECT obj = %llu type = %u " | |
2938 | "bonustype = %u blksz = %u bonuslen = %u cksumtype = %u " | |
2939 | "compress = %u dn_slots = %u err = %d\n", | |
8e739b2c RE |
2940 | (u_longlong_t)drro->drr_object, drro->drr_type, |
2941 | drro->drr_bonustype, drro->drr_blksz, drro->drr_bonuslen, | |
03916905 PD |
2942 | drro->drr_checksumtype, drro->drr_compress, |
2943 | drro->drr_dn_slots, err); | |
2944 | break; | |
2945 | } | |
2946 | case DRR_FREEOBJECTS: | |
2947 | { | |
2948 | struct drr_freeobjects *drrfo = | |
2949 | &rrd->header.drr_u.drr_freeobjects; | |
2950 | dprintf("drr_type = FREEOBJECTS firstobj = %llu " | |
2951 | "numobjs = %llu err = %d\n", | |
8e739b2c RE |
2952 | (u_longlong_t)drrfo->drr_firstobj, |
2953 | (u_longlong_t)drrfo->drr_numobjs, err); | |
03916905 PD |
2954 | break; |
2955 | } | |
2956 | case DRR_WRITE: | |
2957 | { | |
2958 | struct drr_write *drrw = &rrd->header.drr_u.drr_write; | |
2959 | dprintf("drr_type = WRITE obj = %llu type = %u offset = %llu " | |
5dbf8b4e | 2960 | "lsize = %llu cksumtype = %u flags = %u " |
03916905 | 2961 | "compress = %u psize = %llu err = %d\n", |
8e739b2c RE |
2962 | (u_longlong_t)drrw->drr_object, drrw->drr_type, |
2963 | (u_longlong_t)drrw->drr_offset, | |
2964 | (u_longlong_t)drrw->drr_logical_size, | |
2965 | drrw->drr_checksumtype, drrw->drr_flags, | |
2966 | drrw->drr_compressiontype, | |
2967 | (u_longlong_t)drrw->drr_compressed_size, err); | |
03916905 PD |
2968 | break; |
2969 | } | |
2970 | case DRR_WRITE_BYREF: | |
2971 | { | |
2972 | struct drr_write_byref *drrwbr = | |
2973 | &rrd->header.drr_u.drr_write_byref; | |
2974 | dprintf("drr_type = WRITE_BYREF obj = %llu offset = %llu " | |
2975 | "length = %llu toguid = %llx refguid = %llx " | |
2976 | "refobject = %llu refoffset = %llu cksumtype = %u " | |
5dbf8b4e | 2977 | "flags = %u err = %d\n", |
8e739b2c RE |
2978 | (u_longlong_t)drrwbr->drr_object, |
2979 | (u_longlong_t)drrwbr->drr_offset, | |
2980 | (u_longlong_t)drrwbr->drr_length, | |
2981 | (u_longlong_t)drrwbr->drr_toguid, | |
2982 | (u_longlong_t)drrwbr->drr_refguid, | |
2983 | (u_longlong_t)drrwbr->drr_refobject, | |
2984 | (u_longlong_t)drrwbr->drr_refoffset, | |
2985 | drrwbr->drr_checksumtype, drrwbr->drr_flags, err); | |
03916905 PD |
2986 | break; |
2987 | } | |
2988 | case DRR_WRITE_EMBEDDED: | |
2989 | { | |
2990 | struct drr_write_embedded *drrwe = | |
2991 | &rrd->header.drr_u.drr_write_embedded; | |
2992 | dprintf("drr_type = WRITE_EMBEDDED obj = %llu offset = %llu " | |
2993 | "length = %llu compress = %u etype = %u lsize = %u " | |
2994 | "psize = %u err = %d\n", | |
8e739b2c RE |
2995 | (u_longlong_t)drrwe->drr_object, |
2996 | (u_longlong_t)drrwe->drr_offset, | |
2997 | (u_longlong_t)drrwe->drr_length, | |
03916905 PD |
2998 | drrwe->drr_compression, drrwe->drr_etype, |
2999 | drrwe->drr_lsize, drrwe->drr_psize, err); | |
3000 | break; | |
3001 | } | |
3002 | case DRR_FREE: | |
3003 | { | |
3004 | struct drr_free *drrf = &rrd->header.drr_u.drr_free; | |
3005 | dprintf("drr_type = FREE obj = %llu offset = %llu " | |
3006 | "length = %lld err = %d\n", | |
8e739b2c RE |
3007 | (u_longlong_t)drrf->drr_object, |
3008 | (u_longlong_t)drrf->drr_offset, | |
3009 | (longlong_t)drrf->drr_length, | |
03916905 PD |
3010 | err); |
3011 | break; | |
3012 | } | |
3013 | case DRR_SPILL: | |
3014 | { | |
3015 | struct drr_spill *drrs = &rrd->header.drr_u.drr_spill; | |
3016 | dprintf("drr_type = SPILL obj = %llu length = %llu " | |
8e739b2c RE |
3017 | "err = %d\n", (u_longlong_t)drrs->drr_object, |
3018 | (u_longlong_t)drrs->drr_length, err); | |
03916905 PD |
3019 | break; |
3020 | } | |
5dbf8b4e TC |
3021 | case DRR_OBJECT_RANGE: |
3022 | { | |
3023 | struct drr_object_range *drror = | |
3024 | &rrd->header.drr_u.drr_object_range; | |
3025 | dprintf("drr_type = OBJECT_RANGE firstobj = %llu " | |
3026 | "numslots = %llu flags = %u err = %d\n", | |
8e739b2c RE |
3027 | (u_longlong_t)drror->drr_firstobj, |
3028 | (u_longlong_t)drror->drr_numslots, | |
5dbf8b4e TC |
3029 | drror->drr_flags, err); |
3030 | break; | |
3031 | } | |
03916905 PD |
3032 | default: |
3033 | return; | |
3034 | } | |
3035 | #endif | |
3036 | } | |
3037 | ||
3038 | /* | |
3039 | * Commit the records to the pool. | |
3040 | */ | |
3041 | static int | |
3042 | receive_process_record(struct receive_writer_arg *rwa, | |
3043 | struct receive_record_arg *rrd) | |
3044 | { | |
3045 | int err; | |
3046 | ||
3047 | /* Processing in order, therefore bytes_read should be increasing. */ | |
3048 | ASSERT3U(rrd->bytes_read, >=, rwa->bytes_read); | |
3049 | rwa->bytes_read = rrd->bytes_read; | |
3050 | ||
e8cf3a4f AP |
3051 | /* We can only heal write records; other ones get ignored */ |
3052 | if (rwa->heal && rrd->header.drr_type != DRR_WRITE) { | |
3053 | if (rrd->abd != NULL) { | |
3054 | abd_free(rrd->abd); | |
3055 | rrd->abd = NULL; | |
3056 | } else if (rrd->payload != NULL) { | |
3057 | kmem_free(rrd->payload, rrd->payload_size); | |
3058 | rrd->payload = NULL; | |
3059 | } | |
3060 | return (0); | |
3061 | } | |
3062 | ||
3063 | if (!rwa->heal && rrd->header.drr_type != DRR_WRITE) { | |
7261fc2e MA |
3064 | err = flush_write_batch(rwa); |
3065 | if (err != 0) { | |
ba67d821 MA |
3066 | if (rrd->abd != NULL) { |
3067 | abd_free(rrd->abd); | |
3068 | rrd->abd = NULL; | |
7261fc2e MA |
3069 | rrd->payload = NULL; |
3070 | } else if (rrd->payload != NULL) { | |
3071 | kmem_free(rrd->payload, rrd->payload_size); | |
3072 | rrd->payload = NULL; | |
3073 | } | |
3074 | ||
3075 | return (err); | |
3076 | } | |
3077 | } | |
3078 | ||
03916905 PD |
3079 | switch (rrd->header.drr_type) { |
3080 | case DRR_OBJECT: | |
3081 | { | |
3082 | struct drr_object *drro = &rrd->header.drr_u.drr_object; | |
3083 | err = receive_object(rwa, drro, rrd->payload); | |
3084 | kmem_free(rrd->payload, rrd->payload_size); | |
3085 | rrd->payload = NULL; | |
3086 | break; | |
3087 | } | |
3088 | case DRR_FREEOBJECTS: | |
3089 | { | |
3090 | struct drr_freeobjects *drrfo = | |
3091 | &rrd->header.drr_u.drr_freeobjects; | |
3092 | err = receive_freeobjects(rwa, drrfo); | |
3093 | break; | |
3094 | } | |
3095 | case DRR_WRITE: | |
3096 | { | |
7261fc2e | 3097 | err = receive_process_write_record(rwa, rrd); |
e8cf3a4f AP |
3098 | if (rwa->heal) { |
3099 | /* | |
3100 | * If healing - always free the abd after processing | |
3101 | */ | |
3102 | abd_free(rrd->abd); | |
3103 | rrd->abd = NULL; | |
3104 | } else if (err != EAGAIN) { | |
7261fc2e | 3105 | /* |
e8cf3a4f AP |
3106 | * On success, a non-healing |
3107 | * receive_process_write_record() returns | |
7261fc2e MA |
3108 | * EAGAIN to indicate that we do not want to free |
3109 | * the rrd or arc_buf. | |
3110 | */ | |
3111 | ASSERT(err != 0); | |
ba67d821 MA |
3112 | abd_free(rrd->abd); |
3113 | rrd->abd = NULL; | |
7261fc2e | 3114 | } |
03916905 PD |
3115 | break; |
3116 | } | |
03916905 PD |
3117 | case DRR_WRITE_EMBEDDED: |
3118 | { | |
3119 | struct drr_write_embedded *drrwe = | |
3120 | &rrd->header.drr_u.drr_write_embedded; | |
3121 | err = receive_write_embedded(rwa, drrwe, rrd->payload); | |
3122 | kmem_free(rrd->payload, rrd->payload_size); | |
3123 | rrd->payload = NULL; | |
3124 | break; | |
3125 | } | |
3126 | case DRR_FREE: | |
3127 | { | |
3128 | struct drr_free *drrf = &rrd->header.drr_u.drr_free; | |
3129 | err = receive_free(rwa, drrf); | |
3130 | break; | |
3131 | } | |
3132 | case DRR_SPILL: | |
3133 | { | |
3134 | struct drr_spill *drrs = &rrd->header.drr_u.drr_spill; | |
ba67d821 | 3135 | err = receive_spill(rwa, drrs, rrd->abd); |
03916905 | 3136 | if (err != 0) |
ba67d821 MA |
3137 | abd_free(rrd->abd); |
3138 | rrd->abd = NULL; | |
03916905 PD |
3139 | rrd->payload = NULL; |
3140 | break; | |
3141 | } | |
3142 | case DRR_OBJECT_RANGE: | |
3143 | { | |
3144 | struct drr_object_range *drror = | |
3145 | &rrd->header.drr_u.drr_object_range; | |
5dbf8b4e TC |
3146 | err = receive_object_range(rwa, drror); |
3147 | break; | |
03916905 | 3148 | } |
30af21b0 PD |
3149 | case DRR_REDACT: |
3150 | { | |
3151 | struct drr_redact *drrr = &rrd->header.drr_u.drr_redact; | |
3152 | err = receive_redact(rwa, drrr); | |
3153 | break; | |
3154 | } | |
03916905 | 3155 | default: |
5dbf8b4e | 3156 | err = (SET_ERROR(EINVAL)); |
03916905 PD |
3157 | } |
3158 | ||
3159 | if (err != 0) | |
3160 | dprintf_drr(rrd, err); | |
3161 | ||
3162 | return (err); | |
3163 | } | |
3164 | ||
3165 | /* | |
3166 | * dmu_recv_stream's worker thread; pull records off the queue, and then call | |
3167 | * receive_process_record When we're done, signal the main thread and exit. | |
3168 | */ | |
460748d4 | 3169 | static __attribute__((noreturn)) void |
03916905 PD |
3170 | receive_writer_thread(void *arg) |
3171 | { | |
3172 | struct receive_writer_arg *rwa = arg; | |
3173 | struct receive_record_arg *rrd; | |
3174 | fstrans_cookie_t cookie = spl_fstrans_mark(); | |
3175 | ||
3176 | for (rrd = bqueue_dequeue(&rwa->q); !rrd->eos_marker; | |
3177 | rrd = bqueue_dequeue(&rwa->q)) { | |
3178 | /* | |
3179 | * If there's an error, the main thread will stop putting things | |
3180 | * on the queue, but we need to clear everything in it before we | |
3181 | * can exit. | |
3182 | */ | |
7261fc2e | 3183 | int err = 0; |
03916905 | 3184 | if (rwa->err == 0) { |
7261fc2e | 3185 | err = receive_process_record(rwa, rrd); |
ba67d821 MA |
3186 | } else if (rrd->abd != NULL) { |
3187 | abd_free(rrd->abd); | |
3188 | rrd->abd = NULL; | |
03916905 PD |
3189 | rrd->payload = NULL; |
3190 | } else if (rrd->payload != NULL) { | |
3191 | kmem_free(rrd->payload, rrd->payload_size); | |
3192 | rrd->payload = NULL; | |
3193 | } | |
7261fc2e MA |
3194 | /* |
3195 | * EAGAIN indicates that this record has been saved (on | |
3196 | * raw->write_batch), and will be used again, so we don't | |
3197 | * free it. | |
e8cf3a4f | 3198 | * When healing data we always need to free the record. |
7261fc2e | 3199 | */ |
e8cf3a4f | 3200 | if (err != EAGAIN || rwa->heal) { |
1b9cd1a9 MA |
3201 | if (rwa->err == 0) |
3202 | rwa->err = err; | |
7261fc2e MA |
3203 | kmem_free(rrd, sizeof (*rrd)); |
3204 | } | |
03916905 PD |
3205 | } |
3206 | kmem_free(rrd, sizeof (*rrd)); | |
7261fc2e | 3207 | |
e8cf3a4f AP |
3208 | if (rwa->heal) { |
3209 | zio_wait(rwa->heal_pio); | |
3210 | } else { | |
3211 | int err = flush_write_batch(rwa); | |
3212 | if (rwa->err == 0) | |
3213 | rwa->err = err; | |
3214 | } | |
03916905 PD |
3215 | mutex_enter(&rwa->mutex); |
3216 | rwa->done = B_TRUE; | |
3217 | cv_signal(&rwa->cv); | |
3218 | mutex_exit(&rwa->mutex); | |
3219 | spl_fstrans_unmark(cookie); | |
3220 | thread_exit(); | |
3221 | } | |
3222 | ||
3223 | static int | |
30af21b0 | 3224 | resume_check(dmu_recv_cookie_t *drc, nvlist_t *begin_nvl) |
03916905 PD |
3225 | { |
3226 | uint64_t val; | |
30af21b0 PD |
3227 | objset_t *mos = dmu_objset_pool(drc->drc_os)->dp_meta_objset; |
3228 | uint64_t dsobj = dmu_objset_id(drc->drc_os); | |
03916905 PD |
3229 | uint64_t resume_obj, resume_off; |
3230 | ||
3231 | if (nvlist_lookup_uint64(begin_nvl, | |
3232 | "resume_object", &resume_obj) != 0 || | |
3233 | nvlist_lookup_uint64(begin_nvl, | |
3234 | "resume_offset", &resume_off) != 0) { | |
3235 | return (SET_ERROR(EINVAL)); | |
3236 | } | |
3237 | VERIFY0(zap_lookup(mos, dsobj, | |
3238 | DS_FIELD_RESUME_OBJECT, sizeof (val), 1, &val)); | |
3239 | if (resume_obj != val) | |
3240 | return (SET_ERROR(EINVAL)); | |
3241 | VERIFY0(zap_lookup(mos, dsobj, | |
3242 | DS_FIELD_RESUME_OFFSET, sizeof (val), 1, &val)); | |
3243 | if (resume_off != val) | |
3244 | return (SET_ERROR(EINVAL)); | |
3245 | ||
3246 | return (0); | |
3247 | } | |
3248 | ||
3249 | /* | |
3250 | * Read in the stream's records, one by one, and apply them to the pool. There | |
3251 | * are two threads involved; the thread that calls this function will spin up a | |
3252 | * worker thread, read the records off the stream one by one, and issue | |
3253 | * prefetches for any necessary indirect blocks. It will then push the records | |
3254 | * onto an internal blocking queue. The worker thread will pull the records off | |
3255 | * the queue, and actually write the data into the DMU. This way, the worker | |
3256 | * thread doesn't have to wait for reads to complete, since everything it needs | |
3257 | * (the indirect blocks) will be prefetched. | |
3258 | * | |
3259 | * NB: callers *must* call dmu_recv_end() if this succeeds. | |
3260 | */ | |
3261 | int | |
196bee4c | 3262 | dmu_recv_stream(dmu_recv_cookie_t *drc, offset_t *voffp) |
03916905 PD |
3263 | { |
3264 | int err = 0; | |
30af21b0 | 3265 | struct receive_writer_arg *rwa = kmem_zalloc(sizeof (*rwa), KM_SLEEP); |
03916905 | 3266 | |
fce29d6a PZ |
3267 | if (dsl_dataset_has_resume_receive_state(drc->drc_ds)) { |
3268 | uint64_t bytes = 0; | |
03916905 PD |
3269 | (void) zap_lookup(drc->drc_ds->ds_dir->dd_pool->dp_meta_objset, |
3270 | drc->drc_ds->ds_object, DS_FIELD_RESUME_BYTES, | |
30af21b0 PD |
3271 | sizeof (bytes), 1, &bytes); |
3272 | drc->drc_bytes_read += bytes; | |
03916905 PD |
3273 | } |
3274 | ||
30af21b0 | 3275 | drc->drc_ignore_objlist = objlist_create(); |
03916905 PD |
3276 | |
3277 | /* these were verified in dmu_recv_begin */ | |
3278 | ASSERT3U(DMU_GET_STREAM_HDRTYPE(drc->drc_drrb->drr_versioninfo), ==, | |
3279 | DMU_SUBSTREAM); | |
3280 | ASSERT3U(drc->drc_drrb->drr_type, <, DMU_OST_NUMTYPES); | |
3281 | ||
03916905 | 3282 | ASSERT(dsl_dataset_phys(drc->drc_ds)->ds_flags & DS_FLAG_INCONSISTENT); |
30af21b0 PD |
3283 | ASSERT0(drc->drc_os->os_encrypted && |
3284 | (drc->drc_featureflags & DMU_BACKUP_FEATURE_EMBED_DATA)); | |
03916905 | 3285 | |
03916905 | 3286 | /* handle DSL encryption key payload */ |
30af21b0 | 3287 | if (drc->drc_featureflags & DMU_BACKUP_FEATURE_RAW) { |
03916905 PD |
3288 | nvlist_t *keynvl = NULL; |
3289 | ||
30af21b0 | 3290 | ASSERT(drc->drc_os->os_encrypted); |
03916905 PD |
3291 | ASSERT(drc->drc_raw); |
3292 | ||
30af21b0 PD |
3293 | err = nvlist_lookup_nvlist(drc->drc_begin_nvl, "crypt_keydata", |
3294 | &keynvl); | |
03916905 PD |
3295 | if (err != 0) |
3296 | goto out; | |
3297 | ||
e8cf3a4f AP |
3298 | if (!drc->drc_heal) { |
3299 | /* | |
3300 | * If this is a new dataset we set the key immediately. | |
3301 | * Otherwise we don't want to change the key until we | |
3302 | * are sure the rest of the receive succeeded so we | |
3303 | * stash the keynvl away until then. | |
3304 | */ | |
3305 | err = dsl_crypto_recv_raw(spa_name(drc->drc_os->os_spa), | |
3306 | drc->drc_ds->ds_object, drc->drc_fromsnapobj, | |
3307 | drc->drc_drrb->drr_type, keynvl, drc->drc_newfs); | |
3308 | if (err != 0) | |
3309 | goto out; | |
3310 | } | |
03916905 | 3311 | |
f00ab3f2 TC |
3312 | /* see comment in dmu_recv_end_sync() */ |
3313 | drc->drc_ivset_guid = 0; | |
3314 | (void) nvlist_lookup_uint64(keynvl, "to_ivset_guid", | |
3315 | &drc->drc_ivset_guid); | |
3316 | ||
03916905 PD |
3317 | if (!drc->drc_newfs) |
3318 | drc->drc_keynvl = fnvlist_dup(keynvl); | |
3319 | } | |
3320 | ||
30af21b0 PD |
3321 | if (drc->drc_featureflags & DMU_BACKUP_FEATURE_RESUMING) { |
3322 | err = resume_check(drc, drc->drc_begin_nvl); | |
03916905 PD |
3323 | if (err != 0) |
3324 | goto out; | |
3325 | } | |
3326 | ||
da19d919 PD |
3327 | /* |
3328 | * For compatibility with recursive send streams, we do this here, | |
3329 | * rather than in dmu_recv_begin. If we pull the next header too | |
3330 | * early, and it's the END record, we break the `recv_skip` logic. | |
3331 | */ | |
3332 | if (drc->drc_drr_begin->drr_payloadlen == 0) { | |
3333 | err = receive_read_payload_and_next_header(drc, 0, NULL); | |
3334 | if (err != 0) | |
3335 | goto out; | |
3336 | } | |
3337 | ||
61152d10 TC |
3338 | /* |
3339 | * If we failed before this point we will clean up any new resume | |
3340 | * state that was created. Now that we've gotten past the initial | |
3341 | * checks we are ok to retain that resume state. | |
3342 | */ | |
3343 | drc->drc_should_save = B_TRUE; | |
3344 | ||
30af21b0 | 3345 | (void) bqueue_init(&rwa->q, zfs_recv_queue_ff, |
03916905 PD |
3346 | MAX(zfs_recv_queue_length, 2 * zfs_max_recordsize), |
3347 | offsetof(struct receive_record_arg, node)); | |
3348 | cv_init(&rwa->cv, NULL, CV_DEFAULT, NULL); | |
3349 | mutex_init(&rwa->mutex, NULL, MUTEX_DEFAULT, NULL); | |
30af21b0 | 3350 | rwa->os = drc->drc_os; |
03916905 | 3351 | rwa->byteswap = drc->drc_byteswap; |
e8cf3a4f AP |
3352 | rwa->heal = drc->drc_heal; |
3353 | rwa->tofs = drc->drc_tofs; | |
03916905 PD |
3354 | rwa->resumable = drc->drc_resumable; |
3355 | rwa->raw = drc->drc_raw; | |
caf9dd20 | 3356 | rwa->spill = drc->drc_spill; |
7bcb7f08 | 3357 | rwa->full = (drc->drc_drr_begin->drr_u.drr_begin.drr_fromguid == 0); |
03916905 | 3358 | rwa->os->os_raw_receive = drc->drc_raw; |
e8cf3a4f AP |
3359 | if (drc->drc_heal) { |
3360 | rwa->heal_pio = zio_root(drc->drc_os->os_spa, NULL, NULL, | |
3361 | ZIO_FLAG_GODFATHER); | |
3362 | } | |
7261fc2e MA |
3363 | list_create(&rwa->write_batch, sizeof (struct receive_record_arg), |
3364 | offsetof(struct receive_record_arg, node.bqn_node)); | |
03916905 PD |
3365 | |
3366 | (void) thread_create(NULL, 0, receive_writer_thread, rwa, 0, curproc, | |
3367 | TS_RUN, minclsyspri); | |
3368 | /* | |
3369 | * We're reading rwa->err without locks, which is safe since we are the | |
3370 | * only reader, and the worker thread is the only writer. It's ok if we | |
3371 | * miss a write for an iteration or two of the loop, since the writer | |
3372 | * thread will keep freeing records we send it until we send it an eos | |
3373 | * marker. | |
3374 | * | |
3375 | * We can leave this loop in 3 ways: First, if rwa->err is | |
3376 | * non-zero. In that case, the writer thread will free the rrd we just | |
3377 | * pushed. Second, if we're interrupted; in that case, either it's the | |
30af21b0 PD |
3378 | * first loop and drc->drc_rrd was never allocated, or it's later, and |
3379 | * drc->drc_rrd has been handed off to the writer thread who will free | |
3380 | * it. Finally, if receive_read_record fails or we're at the end of the | |
3381 | * stream, then we free drc->drc_rrd and exit. | |
03916905 PD |
3382 | */ |
3383 | while (rwa->err == 0) { | |
3384 | if (issig(JUSTLOOKING) && issig(FORREAL)) { | |
3385 | err = SET_ERROR(EINTR); | |
3386 | break; | |
3387 | } | |
3388 | ||
30af21b0 PD |
3389 | ASSERT3P(drc->drc_rrd, ==, NULL); |
3390 | drc->drc_rrd = drc->drc_next_rrd; | |
3391 | drc->drc_next_rrd = NULL; | |
3392 | /* Allocates and loads header into drc->drc_next_rrd */ | |
3393 | err = receive_read_record(drc); | |
03916905 | 3394 | |
30af21b0 PD |
3395 | if (drc->drc_rrd->header.drr_type == DRR_END || err != 0) { |
3396 | kmem_free(drc->drc_rrd, sizeof (*drc->drc_rrd)); | |
3397 | drc->drc_rrd = NULL; | |
03916905 PD |
3398 | break; |
3399 | } | |
3400 | ||
30af21b0 PD |
3401 | bqueue_enqueue(&rwa->q, drc->drc_rrd, |
3402 | sizeof (struct receive_record_arg) + | |
3403 | drc->drc_rrd->payload_size); | |
3404 | drc->drc_rrd = NULL; | |
03916905 | 3405 | } |
30af21b0 PD |
3406 | |
3407 | ASSERT3P(drc->drc_rrd, ==, NULL); | |
3408 | drc->drc_rrd = kmem_zalloc(sizeof (*drc->drc_rrd), KM_SLEEP); | |
3409 | drc->drc_rrd->eos_marker = B_TRUE; | |
3410 | bqueue_enqueue_flush(&rwa->q, drc->drc_rrd, 1); | |
03916905 PD |
3411 | |
3412 | mutex_enter(&rwa->mutex); | |
3413 | while (!rwa->done) { | |
30af21b0 PD |
3414 | /* |
3415 | * We need to use cv_wait_sig() so that any process that may | |
3416 | * be sleeping here can still fork. | |
3417 | */ | |
3418 | (void) cv_wait_sig(&rwa->cv, &rwa->mutex); | |
03916905 PD |
3419 | } |
3420 | mutex_exit(&rwa->mutex); | |
3421 | ||
3422 | /* | |
3423 | * If we are receiving a full stream as a clone, all object IDs which | |
3424 | * are greater than the maximum ID referenced in the stream are | |
3425 | * by definition unused and must be freed. | |
3426 | */ | |
3427 | if (drc->drc_clone && drc->drc_drrb->drr_fromguid == 0) { | |
3428 | uint64_t obj = rwa->max_object + 1; | |
3429 | int free_err = 0; | |
3430 | int next_err = 0; | |
3431 | ||
3432 | while (next_err == 0) { | |
3433 | free_err = dmu_free_long_object(rwa->os, obj); | |
3434 | if (free_err != 0 && free_err != ENOENT) | |
3435 | break; | |
3436 | ||
3437 | next_err = dmu_object_next(rwa->os, &obj, FALSE, 0); | |
3438 | } | |
3439 | ||
3440 | if (err == 0) { | |
3441 | if (free_err != 0 && free_err != ENOENT) | |
3442 | err = free_err; | |
3443 | else if (next_err != ESRCH) | |
3444 | err = next_err; | |
3445 | } | |
3446 | } | |
3447 | ||
3448 | cv_destroy(&rwa->cv); | |
3449 | mutex_destroy(&rwa->mutex); | |
3450 | bqueue_destroy(&rwa->q); | |
7261fc2e | 3451 | list_destroy(&rwa->write_batch); |
03916905 PD |
3452 | if (err == 0) |
3453 | err = rwa->err; | |
3454 | ||
3455 | out: | |
f00ab3f2 TC |
3456 | /* |
3457 | * If we hit an error before we started the receive_writer_thread | |
3458 | * we need to clean up the next_rrd we create by processing the | |
3459 | * DRR_BEGIN record. | |
3460 | */ | |
30af21b0 PD |
3461 | if (drc->drc_next_rrd != NULL) |
3462 | kmem_free(drc->drc_next_rrd, sizeof (*drc->drc_next_rrd)); | |
f00ab3f2 | 3463 | |
ec213971 MA |
3464 | /* |
3465 | * The objset will be invalidated by dmu_recv_end() when we do | |
3466 | * dsl_dataset_clone_swap_sync_impl(). | |
3467 | */ | |
3468 | drc->drc_os = NULL; | |
3469 | ||
30af21b0 PD |
3470 | kmem_free(rwa, sizeof (*rwa)); |
3471 | nvlist_free(drc->drc_begin_nvl); | |
03916905 PD |
3472 | |
3473 | if (err != 0) { | |
3474 | /* | |
3475 | * Clean up references. If receive is not resumable, | |
3476 | * destroy what we created, so we don't leave it in | |
3477 | * the inconsistent state. | |
3478 | */ | |
3479 | dmu_recv_cleanup_ds(drc); | |
3480 | nvlist_free(drc->drc_keynvl); | |
3481 | } | |
3482 | ||
30af21b0 PD |
3483 | objlist_destroy(drc->drc_ignore_objlist); |
3484 | drc->drc_ignore_objlist = NULL; | |
3485 | *voffp = drc->drc_voff; | |
03916905 PD |
3486 | return (err); |
3487 | } | |
3488 | ||
3489 | static int | |
3490 | dmu_recv_end_check(void *arg, dmu_tx_t *tx) | |
3491 | { | |
3492 | dmu_recv_cookie_t *drc = arg; | |
3493 | dsl_pool_t *dp = dmu_tx_pool(tx); | |
3494 | int error; | |
3495 | ||
3496 | ASSERT3P(drc->drc_ds->ds_owner, ==, dmu_recv_tag); | |
3497 | ||
e8cf3a4f AP |
3498 | if (drc->drc_heal) { |
3499 | error = 0; | |
3500 | } else if (!drc->drc_newfs) { | |
03916905 PD |
3501 | dsl_dataset_t *origin_head; |
3502 | ||
3503 | error = dsl_dataset_hold(dp, drc->drc_tofs, FTAG, &origin_head); | |
3504 | if (error != 0) | |
3505 | return (error); | |
3506 | if (drc->drc_force) { | |
3507 | /* | |
3508 | * We will destroy any snapshots in tofs (i.e. before | |
3509 | * origin_head) that are after the origin (which is | |
3510 | * the snap before drc_ds, because drc_ds can not | |
3511 | * have any snaps of its own). | |
3512 | */ | |
3513 | uint64_t obj; | |
3514 | ||
3515 | obj = dsl_dataset_phys(origin_head)->ds_prev_snap_obj; | |
3516 | while (obj != | |
3517 | dsl_dataset_phys(drc->drc_ds)->ds_prev_snap_obj) { | |
3518 | dsl_dataset_t *snap; | |
3519 | error = dsl_dataset_hold_obj(dp, obj, FTAG, | |
3520 | &snap); | |
3521 | if (error != 0) | |
3522 | break; | |
3523 | if (snap->ds_dir != origin_head->ds_dir) | |
3524 | error = SET_ERROR(EINVAL); | |
3525 | if (error == 0) { | |
3526 | error = dsl_destroy_snapshot_check_impl( | |
3527 | snap, B_FALSE); | |
3528 | } | |
3529 | obj = dsl_dataset_phys(snap)->ds_prev_snap_obj; | |
3530 | dsl_dataset_rele(snap, FTAG); | |
3531 | if (error != 0) | |
3532 | break; | |
3533 | } | |
3534 | if (error != 0) { | |
3535 | dsl_dataset_rele(origin_head, FTAG); | |
3536 | return (error); | |
3537 | } | |
3538 | } | |
3539 | if (drc->drc_keynvl != NULL) { | |
3540 | error = dsl_crypto_recv_raw_key_check(drc->drc_ds, | |
3541 | drc->drc_keynvl, tx); | |
3542 | if (error != 0) { | |
3543 | dsl_dataset_rele(origin_head, FTAG); | |
3544 | return (error); | |
3545 | } | |
3546 | } | |
3547 | ||
3548 | error = dsl_dataset_clone_swap_check_impl(drc->drc_ds, | |
3549 | origin_head, drc->drc_force, drc->drc_owner, tx); | |
3550 | if (error != 0) { | |
3551 | dsl_dataset_rele(origin_head, FTAG); | |
3552 | return (error); | |
3553 | } | |
3554 | error = dsl_dataset_snapshot_check_impl(origin_head, | |
e59a377a MA |
3555 | drc->drc_tosnap, tx, B_TRUE, 1, |
3556 | drc->drc_cred, drc->drc_proc); | |
03916905 PD |
3557 | dsl_dataset_rele(origin_head, FTAG); |
3558 | if (error != 0) | |
3559 | return (error); | |
3560 | ||
3561 | error = dsl_destroy_head_check_impl(drc->drc_ds, 1); | |
3562 | } else { | |
3563 | error = dsl_dataset_snapshot_check_impl(drc->drc_ds, | |
e59a377a MA |
3564 | drc->drc_tosnap, tx, B_TRUE, 1, |
3565 | drc->drc_cred, drc->drc_proc); | |
03916905 PD |
3566 | } |
3567 | return (error); | |
3568 | } | |
3569 | ||
3570 | static void | |
3571 | dmu_recv_end_sync(void *arg, dmu_tx_t *tx) | |
3572 | { | |
3573 | dmu_recv_cookie_t *drc = arg; | |
3574 | dsl_pool_t *dp = dmu_tx_pool(tx); | |
3575 | boolean_t encrypted = drc->drc_ds->ds_dir->dd_crypto_obj != 0; | |
e8cf3a4f | 3576 | uint64_t newsnapobj = 0; |
03916905 PD |
3577 | |
3578 | spa_history_log_internal_ds(drc->drc_ds, "finish receiving", | |
3579 | tx, "snap=%s", drc->drc_tosnap); | |
3580 | drc->drc_ds->ds_objset->os_raw_receive = B_FALSE; | |
3581 | ||
e8cf3a4f AP |
3582 | if (drc->drc_heal) { |
3583 | if (drc->drc_keynvl != NULL) { | |
3584 | nvlist_free(drc->drc_keynvl); | |
3585 | drc->drc_keynvl = NULL; | |
3586 | } | |
3587 | } else if (!drc->drc_newfs) { | |
03916905 PD |
3588 | dsl_dataset_t *origin_head; |
3589 | ||
3590 | VERIFY0(dsl_dataset_hold(dp, drc->drc_tofs, FTAG, | |
3591 | &origin_head)); | |
3592 | ||
3593 | if (drc->drc_force) { | |
3594 | /* | |
3595 | * Destroy any snapshots of drc_tofs (origin_head) | |
3596 | * after the origin (the snap before drc_ds). | |
3597 | */ | |
3598 | uint64_t obj; | |
3599 | ||
3600 | obj = dsl_dataset_phys(origin_head)->ds_prev_snap_obj; | |
3601 | while (obj != | |
3602 | dsl_dataset_phys(drc->drc_ds)->ds_prev_snap_obj) { | |
3603 | dsl_dataset_t *snap; | |
3604 | VERIFY0(dsl_dataset_hold_obj(dp, obj, FTAG, | |
3605 | &snap)); | |
3606 | ASSERT3P(snap->ds_dir, ==, origin_head->ds_dir); | |
3607 | obj = dsl_dataset_phys(snap)->ds_prev_snap_obj; | |
3608 | dsl_destroy_snapshot_sync_impl(snap, | |
3609 | B_FALSE, tx); | |
3610 | dsl_dataset_rele(snap, FTAG); | |
3611 | } | |
3612 | } | |
3613 | if (drc->drc_keynvl != NULL) { | |
3614 | dsl_crypto_recv_raw_key_sync(drc->drc_ds, | |
3615 | drc->drc_keynvl, tx); | |
3616 | nvlist_free(drc->drc_keynvl); | |
3617 | drc->drc_keynvl = NULL; | |
3618 | } | |
3619 | ||
30af21b0 PD |
3620 | VERIFY3P(drc->drc_ds->ds_prev, ==, |
3621 | origin_head->ds_prev); | |
03916905 PD |
3622 | |
3623 | dsl_dataset_clone_swap_sync_impl(drc->drc_ds, | |
3624 | origin_head, tx); | |
0fdd6106 MA |
3625 | /* |
3626 | * The objset was evicted by dsl_dataset_clone_swap_sync_impl, | |
3627 | * so drc_os is no longer valid. | |
3628 | */ | |
3629 | drc->drc_os = NULL; | |
3630 | ||
03916905 PD |
3631 | dsl_dataset_snapshot_sync_impl(origin_head, |
3632 | drc->drc_tosnap, tx); | |
3633 | ||
3634 | /* set snapshot's creation time and guid */ | |
3635 | dmu_buf_will_dirty(origin_head->ds_prev->ds_dbuf, tx); | |
3636 | dsl_dataset_phys(origin_head->ds_prev)->ds_creation_time = | |
3637 | drc->drc_drrb->drr_creation_time; | |
3638 | dsl_dataset_phys(origin_head->ds_prev)->ds_guid = | |
3639 | drc->drc_drrb->drr_toguid; | |
3640 | dsl_dataset_phys(origin_head->ds_prev)->ds_flags &= | |
3641 | ~DS_FLAG_INCONSISTENT; | |
3642 | ||
3643 | dmu_buf_will_dirty(origin_head->ds_dbuf, tx); | |
3644 | dsl_dataset_phys(origin_head)->ds_flags &= | |
3645 | ~DS_FLAG_INCONSISTENT; | |
3646 | ||
196bee4c | 3647 | newsnapobj = |
03916905 PD |
3648 | dsl_dataset_phys(origin_head)->ds_prev_snap_obj; |
3649 | ||
3650 | dsl_dataset_rele(origin_head, FTAG); | |
3651 | dsl_destroy_head_sync_impl(drc->drc_ds, tx); | |
3652 | ||
3653 | if (drc->drc_owner != NULL) | |
3654 | VERIFY3P(origin_head->ds_owner, ==, drc->drc_owner); | |
3655 | } else { | |
3656 | dsl_dataset_t *ds = drc->drc_ds; | |
3657 | ||
3658 | dsl_dataset_snapshot_sync_impl(ds, drc->drc_tosnap, tx); | |
3659 | ||
3660 | /* set snapshot's creation time and guid */ | |
3661 | dmu_buf_will_dirty(ds->ds_prev->ds_dbuf, tx); | |
3662 | dsl_dataset_phys(ds->ds_prev)->ds_creation_time = | |
3663 | drc->drc_drrb->drr_creation_time; | |
3664 | dsl_dataset_phys(ds->ds_prev)->ds_guid = | |
3665 | drc->drc_drrb->drr_toguid; | |
3666 | dsl_dataset_phys(ds->ds_prev)->ds_flags &= | |
3667 | ~DS_FLAG_INCONSISTENT; | |
3668 | ||
3669 | dmu_buf_will_dirty(ds->ds_dbuf, tx); | |
3670 | dsl_dataset_phys(ds)->ds_flags &= ~DS_FLAG_INCONSISTENT; | |
3671 | if (dsl_dataset_has_resume_receive_state(ds)) { | |
3672 | (void) zap_remove(dp->dp_meta_objset, ds->ds_object, | |
3673 | DS_FIELD_RESUME_FROMGUID, tx); | |
3674 | (void) zap_remove(dp->dp_meta_objset, ds->ds_object, | |
3675 | DS_FIELD_RESUME_OBJECT, tx); | |
3676 | (void) zap_remove(dp->dp_meta_objset, ds->ds_object, | |
3677 | DS_FIELD_RESUME_OFFSET, tx); | |
3678 | (void) zap_remove(dp->dp_meta_objset, ds->ds_object, | |
3679 | DS_FIELD_RESUME_BYTES, tx); | |
3680 | (void) zap_remove(dp->dp_meta_objset, ds->ds_object, | |
3681 | DS_FIELD_RESUME_TOGUID, tx); | |
3682 | (void) zap_remove(dp->dp_meta_objset, ds->ds_object, | |
3683 | DS_FIELD_RESUME_TONAME, tx); | |
30af21b0 PD |
3684 | (void) zap_remove(dp->dp_meta_objset, ds->ds_object, |
3685 | DS_FIELD_RESUME_REDACT_BOOKMARK_SNAPS, tx); | |
03916905 | 3686 | } |
196bee4c | 3687 | newsnapobj = |
03916905 PD |
3688 | dsl_dataset_phys(drc->drc_ds)->ds_prev_snap_obj; |
3689 | } | |
f00ab3f2 TC |
3690 | |
3691 | /* | |
3692 | * If this is a raw receive, the crypt_keydata nvlist will include | |
3693 | * a to_ivset_guid for us to set on the new snapshot. This value | |
3694 | * will override the value generated by the snapshot code. However, | |
3695 | * this value may not be present, because older implementations of | |
3696 | * the raw send code did not include this value, and we are still | |
3697 | * allowed to receive them if the zfs_disable_ivset_guid_check | |
3698 | * tunable is set, in which case we will leave the newly-generated | |
3699 | * value. | |
3700 | */ | |
e8cf3a4f | 3701 | if (!drc->drc_heal && drc->drc_raw && drc->drc_ivset_guid != 0) { |
196bee4c | 3702 | dmu_object_zapify(dp->dp_meta_objset, newsnapobj, |
f00ab3f2 | 3703 | DMU_OT_DSL_DATASET, tx); |
196bee4c | 3704 | VERIFY0(zap_update(dp->dp_meta_objset, newsnapobj, |
f00ab3f2 TC |
3705 | DS_FIELD_IVSET_GUID, sizeof (uint64_t), 1, |
3706 | &drc->drc_ivset_guid, tx)); | |
3707 | } | |
3708 | ||
03916905 PD |
3709 | /* |
3710 | * Release the hold from dmu_recv_begin. This must be done before | |
3711 | * we return to open context, so that when we free the dataset's dnode | |
3712 | * we can evict its bonus buffer. Since the dataset may be destroyed | |
3713 | * at this point (and therefore won't have a valid pointer to the spa) | |
3714 | * we release the key mapping manually here while we do have a valid | |
3715 | * pointer, if it exists. | |
3716 | */ | |
3717 | if (!drc->drc_raw && encrypted) { | |
3718 | (void) spa_keystore_remove_mapping(dmu_tx_pool(tx)->dp_spa, | |
3719 | drc->drc_ds->ds_object, drc->drc_ds); | |
3720 | } | |
3721 | dsl_dataset_disown(drc->drc_ds, 0, dmu_recv_tag); | |
3722 | drc->drc_ds = NULL; | |
3723 | } | |
3724 | ||
03916905 PD |
3725 | static int dmu_recv_end_modified_blocks = 3; |
3726 | ||
3727 | static int | |
3728 | dmu_recv_existing_end(dmu_recv_cookie_t *drc) | |
3729 | { | |
3730 | #ifdef _KERNEL | |
3731 | /* | |
3732 | * We will be destroying the ds; make sure its origin is unmounted if | |
3733 | * necessary. | |
3734 | */ | |
3735 | char name[ZFS_MAX_DATASET_NAME_LEN]; | |
3736 | dsl_dataset_name(drc->drc_ds, name); | |
3737 | zfs_destroy_unmount_origin(name); | |
3738 | #endif | |
3739 | ||
3740 | return (dsl_sync_task(drc->drc_tofs, | |
3741 | dmu_recv_end_check, dmu_recv_end_sync, drc, | |
3742 | dmu_recv_end_modified_blocks, ZFS_SPACE_CHECK_NORMAL)); | |
3743 | } | |
3744 | ||
3745 | static int | |
3746 | dmu_recv_new_end(dmu_recv_cookie_t *drc) | |
3747 | { | |
3748 | return (dsl_sync_task(drc->drc_tofs, | |
3749 | dmu_recv_end_check, dmu_recv_end_sync, drc, | |
3750 | dmu_recv_end_modified_blocks, ZFS_SPACE_CHECK_NORMAL)); | |
3751 | } | |
3752 | ||
3753 | int | |
3754 | dmu_recv_end(dmu_recv_cookie_t *drc, void *owner) | |
3755 | { | |
3756 | int error; | |
3757 | ||
3758 | drc->drc_owner = owner; | |
3759 | ||
3760 | if (drc->drc_newfs) | |
3761 | error = dmu_recv_new_end(drc); | |
3762 | else | |
3763 | error = dmu_recv_existing_end(drc); | |
3764 | ||
3765 | if (error != 0) { | |
3766 | dmu_recv_cleanup_ds(drc); | |
3767 | nvlist_free(drc->drc_keynvl); | |
e8cf3a4f | 3768 | } else if (!drc->drc_heal) { |
ec213971 MA |
3769 | if (drc->drc_newfs) { |
3770 | zvol_create_minor(drc->drc_tofs); | |
3771 | } | |
3772 | char *snapname = kmem_asprintf("%s@%s", | |
3773 | drc->drc_tofs, drc->drc_tosnap); | |
3774 | zvol_create_minor(snapname); | |
3775 | kmem_strfree(snapname); | |
03916905 PD |
3776 | } |
3777 | return (error); | |
3778 | } | |
3779 | ||
3780 | /* | |
3781 | * Return TRUE if this objset is currently being received into. | |
3782 | */ | |
3783 | boolean_t | |
3784 | dmu_objset_is_receiving(objset_t *os) | |
3785 | { | |
3786 | return (os->os_dsl_dataset != NULL && | |
3787 | os->os_dsl_dataset->ds_owner == dmu_recv_tag); | |
3788 | } | |
3789 | ||
fdc2d303 | 3790 | ZFS_MODULE_PARAM(zfs_recv, zfs_recv_, queue_length, UINT, ZMOD_RW, |
03fdcb9a | 3791 | "Maximum receive queue length"); |
30af21b0 | 3792 | |
fdc2d303 | 3793 | ZFS_MODULE_PARAM(zfs_recv, zfs_recv_, queue_ff, UINT, ZMOD_RW, |
03fdcb9a | 3794 | "Receive queue fill fraction"); |
7261fc2e | 3795 | |
fdc2d303 | 3796 | ZFS_MODULE_PARAM(zfs_recv, zfs_recv_, write_batch_size, UINT, ZMOD_RW, |
7261fc2e | 3797 | "Maximum amount of writes to batch into one transaction"); |
e8cf3a4f AP |
3798 | |
3799 | ZFS_MODULE_PARAM(zfs_recv, zfs_recv_, best_effort_corrective, INT, ZMOD_RW, | |
3800 | "Ignore errors during corrective receive"); | |
3801 | /* END CSTYLED */ |