]>
Commit | Line | Data |
---|---|---|
34dc7c2f BB |
1 | /* |
2 | * CDDL HEADER START | |
3 | * | |
4 | * The contents of this file are subject to the terms of the | |
5 | * Common Development and Distribution License (the "License"). | |
6 | * You may not use this file except in compliance with the License. | |
7 | * | |
8 | * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE | |
9 | * or http://www.opensolaris.org/os/licensing. | |
10 | * See the License for the specific language governing permissions | |
11 | * and limitations under the License. | |
12 | * | |
13 | * When distributing Covered Code, include this CDDL HEADER in each | |
14 | * file and include the License file at usr/src/OPENSOLARIS.LICENSE. | |
15 | * If applicable, add the following below this CDDL HEADER, with the | |
16 | * fields enclosed by brackets "[]" replaced with your own identifying | |
17 | * information: Portions Copyright [yyyy] [name of copyright owner] | |
18 | * | |
19 | * CDDL HEADER END | |
20 | */ | |
21 | ||
22 | /* | |
428870ff | 23 | * Copyright (c) 2005, 2010, Oracle and/or its affiliates. All rights reserved. |
cae5b340 | 24 | * Copyright (c) 2011, 2015 by Delphix. All rights reserved. |
37abac6d | 25 | * Copyright (c) 2012, Joyent, Inc. All rights reserved. |
a08ee875 | 26 | * Copyright (c) 2012 Pawel Jakub Dawidek <pawel@dawidek.net>. |
0cee2406 | 27 | * All rights reserved |
a08ee875 | 28 | * Copyright (c) 2013 Steven Hartland. All rights reserved. |
cae5b340 AX |
29 | * Copyright 2015, OmniTI Computer Consulting, Inc. All rights reserved. |
30 | * Copyright 2016 Igor Kozhukhov <ikozhukhov@gmail.com> | |
31 | * Copyright (c) 2017, loli10K <ezomori.nozomu@gmail.com>. All rights reserved. | |
34dc7c2f BB |
32 | */ |
33 | ||
34dc7c2f BB |
34 | #include <assert.h> |
35 | #include <ctype.h> | |
36 | #include <errno.h> | |
34dc7c2f BB |
37 | #include <libintl.h> |
38 | #include <stdio.h> | |
39 | #include <stdlib.h> | |
40 | #include <strings.h> | |
41 | #include <unistd.h> | |
42 | #include <stddef.h> | |
43 | #include <fcntl.h> | |
44 | #include <sys/mount.h> | |
9b020fd9 BB |
45 | #include <sys/mntent.h> |
46 | #include <sys/mnttab.h> | |
47 | #include <sys/avl.h> | |
48 | #include <sys/debug.h> | |
ea04106b | 49 | #include <sys/stat.h> |
9b020fd9 | 50 | #include <stddef.h> |
428870ff BB |
51 | #include <pthread.h> |
52 | #include <umem.h> | |
37abac6d | 53 | #include <time.h> |
34dc7c2f BB |
54 | |
55 | #include <libzfs.h> | |
ea04106b | 56 | #include <libzfs_core.h> |
34dc7c2f BB |
57 | |
58 | #include "zfs_namecheck.h" | |
59 | #include "zfs_prop.h" | |
428870ff | 60 | #include "zfs_fletcher.h" |
34dc7c2f | 61 | #include "libzfs_impl.h" |
cae5b340 | 62 | #include <zlib.h> |
428870ff BB |
63 | #include <sys/zio_checksum.h> |
64 | #include <sys/ddt.h> | |
1b9d8c34 | 65 | #include <sys/socket.h> |
cae5b340 | 66 | #include <sys/sha2.h> |
34dc7c2f | 67 | |
428870ff BB |
68 | /* in libzfs_dataset.c */ |
69 | extern void zfs_setprop_error(libzfs_handle_t *, zfs_prop_t, int, char *); | |
34dc7c2f | 70 | |
cae5b340 AX |
71 | static int zfs_receive_impl(libzfs_handle_t *, const char *, const char *, |
72 | recvflags_t *, int, const char *, nvlist_t *, avl_tree_t *, char **, int, | |
73 | uint64_t *, const char *, nvlist_t *); | |
74 | static int guid_to_name(libzfs_handle_t *, const char *, | |
75 | uint64_t, boolean_t, char *); | |
428870ff | 76 | |
2598c001 | 77 | static const zio_cksum_t zero_cksum = { { 0 } }; |
428870ff BB |
78 | |
79 | typedef struct dedup_arg { | |
80 | int inputfd; | |
81 | int outputfd; | |
82 | libzfs_handle_t *dedup_hdl; | |
83 | } dedup_arg_t; | |
84 | ||
37abac6d BP |
85 | typedef struct progress_arg { |
86 | zfs_handle_t *pa_zhp; | |
87 | int pa_fd; | |
88 | boolean_t pa_parsable; | |
89 | } progress_arg_t; | |
90 | ||
428870ff BB |
91 | typedef struct dataref { |
92 | uint64_t ref_guid; | |
93 | uint64_t ref_object; | |
94 | uint64_t ref_offset; | |
95 | } dataref_t; | |
96 | ||
97 | typedef struct dedup_entry { | |
98 | struct dedup_entry *dde_next; | |
99 | zio_cksum_t dde_chksum; | |
100 | uint64_t dde_prop; | |
101 | dataref_t dde_ref; | |
102 | } dedup_entry_t; | |
103 | ||
104 | #define MAX_DDT_PHYSMEM_PERCENT 20 | |
105 | #define SMALLEST_POSSIBLE_MAX_DDT_MB 128 | |
106 | ||
107 | typedef struct dedup_table { | |
108 | dedup_entry_t **dedup_hash_array; | |
109 | umem_cache_t *ddecache; | |
110 | uint64_t max_ddt_size; /* max dedup table size in bytes */ | |
111 | uint64_t cur_ddt_size; /* current dedup table size in bytes */ | |
112 | uint64_t ddt_count; | |
113 | int numhashbits; | |
114 | boolean_t ddt_full; | |
115 | } dedup_table_t; | |
116 | ||
117 | static int | |
118 | high_order_bit(uint64_t n) | |
119 | { | |
120 | int count; | |
121 | ||
122 | for (count = 0; n != 0; count++) | |
123 | n >>= 1; | |
124 | return (count); | |
125 | } | |
126 | ||
127 | static size_t | |
128 | ssread(void *buf, size_t len, FILE *stream) | |
129 | { | |
130 | size_t outlen; | |
131 | ||
132 | if ((outlen = fread(buf, len, 1, stream)) == 0) | |
133 | return (0); | |
134 | ||
135 | return (outlen); | |
136 | } | |
137 | ||
138 | static void | |
139 | ddt_hash_append(libzfs_handle_t *hdl, dedup_table_t *ddt, dedup_entry_t **ddepp, | |
140 | zio_cksum_t *cs, uint64_t prop, dataref_t *dr) | |
141 | { | |
142 | dedup_entry_t *dde; | |
143 | ||
144 | if (ddt->cur_ddt_size >= ddt->max_ddt_size) { | |
145 | if (ddt->ddt_full == B_FALSE) { | |
146 | zfs_error_aux(hdl, dgettext(TEXT_DOMAIN, | |
147 | "Dedup table full. Deduplication will continue " | |
148 | "with existing table entries")); | |
149 | ddt->ddt_full = B_TRUE; | |
150 | } | |
151 | return; | |
152 | } | |
153 | ||
154 | if ((dde = umem_cache_alloc(ddt->ddecache, UMEM_DEFAULT)) | |
155 | != NULL) { | |
156 | assert(*ddepp == NULL); | |
157 | dde->dde_next = NULL; | |
158 | dde->dde_chksum = *cs; | |
159 | dde->dde_prop = prop; | |
160 | dde->dde_ref = *dr; | |
161 | *ddepp = dde; | |
162 | ddt->cur_ddt_size += sizeof (dedup_entry_t); | |
163 | ddt->ddt_count++; | |
164 | } | |
165 | } | |
166 | ||
167 | /* | |
168 | * Using the specified dedup table, do a lookup for an entry with | |
169 | * the checksum cs. If found, return the block's reference info | |
170 | * in *dr. Otherwise, insert a new entry in the dedup table, using | |
171 | * the reference information specified by *dr. | |
172 | * | |
173 | * return value: true - entry was found | |
174 | * false - entry was not found | |
175 | */ | |
176 | static boolean_t | |
177 | ddt_update(libzfs_handle_t *hdl, dedup_table_t *ddt, zio_cksum_t *cs, | |
178 | uint64_t prop, dataref_t *dr) | |
179 | { | |
180 | uint32_t hashcode; | |
181 | dedup_entry_t **ddepp; | |
182 | ||
183 | hashcode = BF64_GET(cs->zc_word[0], 0, ddt->numhashbits); | |
184 | ||
185 | for (ddepp = &(ddt->dedup_hash_array[hashcode]); *ddepp != NULL; | |
186 | ddepp = &((*ddepp)->dde_next)) { | |
187 | if (ZIO_CHECKSUM_EQUAL(((*ddepp)->dde_chksum), *cs) && | |
188 | (*ddepp)->dde_prop == prop) { | |
189 | *dr = (*ddepp)->dde_ref; | |
190 | return (B_TRUE); | |
191 | } | |
192 | } | |
193 | ddt_hash_append(hdl, ddt, ddepp, cs, prop, dr); | |
194 | return (B_FALSE); | |
195 | } | |
196 | ||
197 | static int | |
cae5b340 AX |
198 | dump_record(dmu_replay_record_t *drr, void *payload, int payload_len, |
199 | zio_cksum_t *zc, int outfd) | |
428870ff | 200 | { |
cae5b340 AX |
201 | ASSERT3U(offsetof(dmu_replay_record_t, drr_u.drr_checksum.drr_checksum), |
202 | ==, sizeof (dmu_replay_record_t) - sizeof (zio_cksum_t)); | |
203 | fletcher_4_incremental_native(drr, | |
204 | offsetof(dmu_replay_record_t, drr_u.drr_checksum.drr_checksum), zc); | |
205 | if (drr->drr_type != DRR_BEGIN) { | |
206 | ASSERT(ZIO_CHECKSUM_IS_ZERO(&drr->drr_u. | |
207 | drr_checksum.drr_checksum)); | |
208 | drr->drr_u.drr_checksum.drr_checksum = *zc; | |
209 | } | |
210 | fletcher_4_incremental_native(&drr->drr_u.drr_checksum.drr_checksum, | |
211 | sizeof (zio_cksum_t), zc); | |
212 | if (write(outfd, drr, sizeof (*drr)) == -1) | |
213 | return (errno); | |
214 | if (payload_len != 0) { | |
215 | fletcher_4_incremental_native(payload, payload_len, zc); | |
216 | if (write(outfd, payload, payload_len) == -1) | |
217 | return (errno); | |
218 | } | |
219 | return (0); | |
428870ff BB |
220 | } |
221 | ||
222 | /* | |
223 | * This function is started in a separate thread when the dedup option | |
224 | * has been requested. The main send thread determines the list of | |
225 | * snapshots to be included in the send stream and makes the ioctl calls | |
226 | * for each one. But instead of having the ioctl send the output to the | |
227 | * the output fd specified by the caller of zfs_send()), the | |
228 | * ioctl is told to direct the output to a pipe, which is read by the | |
229 | * alternate thread running THIS function. This function does the | |
230 | * dedup'ing by: | |
231 | * 1. building a dedup table (the DDT) | |
232 | * 2. doing checksums on each data block and inserting a record in the DDT | |
233 | * 3. looking for matching checksums, and | |
234 | * 4. sending a DRR_WRITE_BYREF record instead of a write record whenever | |
235 | * a duplicate block is found. | |
236 | * The output of this function then goes to the output fd requested | |
237 | * by the caller of zfs_send(). | |
238 | */ | |
239 | static void * | |
240 | cksummer(void *arg) | |
241 | { | |
242 | dedup_arg_t *dda = arg; | |
e10b0808 | 243 | char *buf = zfs_alloc(dda->dedup_hdl, SPA_MAXBLOCKSIZE); |
cae5b340 | 244 | dmu_replay_record_t thedrr = { 0 }; |
428870ff | 245 | dmu_replay_record_t *drr = &thedrr; |
428870ff BB |
246 | FILE *ofp; |
247 | int outfd; | |
428870ff BB |
248 | dedup_table_t ddt; |
249 | zio_cksum_t stream_cksum; | |
428870ff BB |
250 | uint64_t numbuckets; |
251 | ||
cae5b340 AX |
252 | #ifdef _ILP32 |
253 | ddt.max_ddt_size = SMALLEST_POSSIBLE_MAX_DDT_MB << 20; | |
254 | #else | |
255 | uint64_t physmem = sysconf(_SC_PHYS_PAGES) * sysconf(_SC_PAGESIZE); | |
428870ff | 256 | ddt.max_ddt_size = |
cae5b340 AX |
257 | MAX((physmem * MAX_DDT_PHYSMEM_PERCENT) / 100, |
258 | SMALLEST_POSSIBLE_MAX_DDT_MB << 20); | |
259 | #endif | |
428870ff | 260 | |
cae5b340 | 261 | numbuckets = ddt.max_ddt_size / (sizeof (dedup_entry_t)); |
428870ff BB |
262 | |
263 | /* | |
264 | * numbuckets must be a power of 2. Increase number to | |
265 | * a power of 2 if necessary. | |
266 | */ | |
267 | if (!ISP2(numbuckets)) | |
cae5b340 | 268 | numbuckets = 1ULL << high_order_bit(numbuckets); |
428870ff BB |
269 | |
270 | ddt.dedup_hash_array = calloc(numbuckets, sizeof (dedup_entry_t *)); | |
271 | ddt.ddecache = umem_cache_create("dde", sizeof (dedup_entry_t), 0, | |
272 | NULL, NULL, NULL, NULL, NULL, 0); | |
273 | ddt.cur_ddt_size = numbuckets * sizeof (dedup_entry_t *); | |
274 | ddt.numhashbits = high_order_bit(numbuckets) - 1; | |
275 | ddt.ddt_full = B_FALSE; | |
276 | ||
428870ff BB |
277 | outfd = dda->outputfd; |
278 | ofp = fdopen(dda->inputfd, "r"); | |
cae5b340 AX |
279 | while (ssread(drr, sizeof (*drr), ofp) != 0) { |
280 | ||
281 | /* | |
282 | * kernel filled in checksum, we are going to write same | |
283 | * record, but need to regenerate checksum. | |
284 | */ | |
285 | if (drr->drr_type != DRR_BEGIN) { | |
286 | bzero(&drr->drr_u.drr_checksum.drr_checksum, | |
287 | sizeof (drr->drr_u.drr_checksum.drr_checksum)); | |
288 | } | |
428870ff BB |
289 | |
290 | switch (drr->drr_type) { | |
291 | case DRR_BEGIN: | |
292 | { | |
cae5b340 AX |
293 | struct drr_begin *drrb = &drr->drr_u.drr_begin; |
294 | int fflags; | |
295 | int sz = 0; | |
428870ff BB |
296 | ZIO_SET_CHECKSUM(&stream_cksum, 0, 0, 0, 0); |
297 | ||
cae5b340 AX |
298 | ASSERT3U(drrb->drr_magic, ==, DMU_BACKUP_MAGIC); |
299 | ||
428870ff BB |
300 | /* set the DEDUP feature flag for this stream */ |
301 | fflags = DMU_GET_FEATUREFLAGS(drrb->drr_versioninfo); | |
302 | fflags |= (DMU_BACKUP_FEATURE_DEDUP | | |
303 | DMU_BACKUP_FEATURE_DEDUPPROPS); | |
304 | DMU_SET_FEATUREFLAGS(drrb->drr_versioninfo, fflags); | |
305 | ||
cae5b340 AX |
306 | if (drr->drr_payloadlen != 0) { |
307 | sz = drr->drr_payloadlen; | |
428870ff | 308 | |
e10b0808 AX |
309 | if (sz > SPA_MAXBLOCKSIZE) { |
310 | buf = zfs_realloc(dda->dedup_hdl, buf, | |
311 | SPA_MAXBLOCKSIZE, sz); | |
428870ff BB |
312 | } |
313 | (void) ssread(buf, sz, ofp); | |
314 | if (ferror(stdin)) | |
315 | perror("fread"); | |
428870ff | 316 | } |
cae5b340 AX |
317 | if (dump_record(drr, buf, sz, &stream_cksum, |
318 | outfd) != 0) | |
319 | goto out; | |
428870ff BB |
320 | break; |
321 | } | |
322 | ||
323 | case DRR_END: | |
324 | { | |
cae5b340 | 325 | struct drr_end *drre = &drr->drr_u.drr_end; |
428870ff | 326 | /* use the recalculated checksum */ |
cae5b340 AX |
327 | drre->drr_checksum = stream_cksum; |
328 | if (dump_record(drr, NULL, 0, &stream_cksum, | |
329 | outfd) != 0) | |
428870ff BB |
330 | goto out; |
331 | break; | |
332 | } | |
333 | ||
334 | case DRR_OBJECT: | |
335 | { | |
cae5b340 | 336 | struct drr_object *drro = &drr->drr_u.drr_object; |
428870ff BB |
337 | if (drro->drr_bonuslen > 0) { |
338 | (void) ssread(buf, | |
339 | P2ROUNDUP((uint64_t)drro->drr_bonuslen, 8), | |
340 | ofp); | |
428870ff | 341 | } |
cae5b340 AX |
342 | if (dump_record(drr, buf, |
343 | P2ROUNDUP((uint64_t)drro->drr_bonuslen, 8), | |
344 | &stream_cksum, outfd) != 0) | |
345 | goto out; | |
428870ff BB |
346 | break; |
347 | } | |
348 | ||
349 | case DRR_SPILL: | |
350 | { | |
cae5b340 | 351 | struct drr_spill *drrs = &drr->drr_u.drr_spill; |
428870ff | 352 | (void) ssread(buf, drrs->drr_length, ofp); |
cae5b340 AX |
353 | if (dump_record(drr, buf, drrs->drr_length, |
354 | &stream_cksum, outfd) != 0) | |
428870ff BB |
355 | goto out; |
356 | break; | |
357 | } | |
358 | ||
359 | case DRR_FREEOBJECTS: | |
360 | { | |
cae5b340 AX |
361 | if (dump_record(drr, NULL, 0, &stream_cksum, |
362 | outfd) != 0) | |
428870ff BB |
363 | goto out; |
364 | break; | |
365 | } | |
366 | ||
367 | case DRR_WRITE: | |
368 | { | |
cae5b340 | 369 | struct drr_write *drrw = &drr->drr_u.drr_write; |
428870ff | 370 | dataref_t dataref; |
cae5b340 | 371 | uint64_t payload_size; |
428870ff | 372 | |
cae5b340 AX |
373 | payload_size = DRR_WRITE_PAYLOAD_SIZE(drrw); |
374 | (void) ssread(buf, payload_size, ofp); | |
428870ff BB |
375 | |
376 | /* | |
377 | * Use the existing checksum if it's dedup-capable, | |
378 | * else calculate a SHA256 checksum for it. | |
379 | */ | |
380 | ||
381 | if (ZIO_CHECKSUM_EQUAL(drrw->drr_key.ddk_cksum, | |
382 | zero_cksum) || | |
383 | !DRR_IS_DEDUP_CAPABLE(drrw->drr_checksumflags)) { | |
cae5b340 | 384 | SHA2_CTX ctx; |
9c905c55 BB |
385 | zio_cksum_t tmpsha256; |
386 | ||
cae5b340 AX |
387 | SHA2Init(SHA256, &ctx); |
388 | SHA2Update(&ctx, buf, payload_size); | |
389 | SHA2Final(&tmpsha256, &ctx); | |
428870ff | 390 | |
428870ff BB |
391 | drrw->drr_key.ddk_cksum.zc_word[0] = |
392 | BE_64(tmpsha256.zc_word[0]); | |
393 | drrw->drr_key.ddk_cksum.zc_word[1] = | |
394 | BE_64(tmpsha256.zc_word[1]); | |
395 | drrw->drr_key.ddk_cksum.zc_word[2] = | |
396 | BE_64(tmpsha256.zc_word[2]); | |
397 | drrw->drr_key.ddk_cksum.zc_word[3] = | |
398 | BE_64(tmpsha256.zc_word[3]); | |
399 | drrw->drr_checksumtype = ZIO_CHECKSUM_SHA256; | |
400 | drrw->drr_checksumflags = DRR_CHECKSUM_DEDUP; | |
401 | } | |
402 | ||
403 | dataref.ref_guid = drrw->drr_toguid; | |
404 | dataref.ref_object = drrw->drr_object; | |
405 | dataref.ref_offset = drrw->drr_offset; | |
406 | ||
407 | if (ddt_update(dda->dedup_hdl, &ddt, | |
408 | &drrw->drr_key.ddk_cksum, drrw->drr_key.ddk_prop, | |
409 | &dataref)) { | |
cae5b340 AX |
410 | dmu_replay_record_t wbr_drr = {0}; |
411 | struct drr_write_byref *wbr_drrr = | |
412 | &wbr_drr.drr_u.drr_write_byref; | |
413 | ||
428870ff | 414 | /* block already present in stream */ |
cae5b340 AX |
415 | wbr_drr.drr_type = DRR_WRITE_BYREF; |
416 | ||
428870ff BB |
417 | wbr_drrr->drr_object = drrw->drr_object; |
418 | wbr_drrr->drr_offset = drrw->drr_offset; | |
cae5b340 | 419 | wbr_drrr->drr_length = drrw->drr_logical_size; |
428870ff BB |
420 | wbr_drrr->drr_toguid = drrw->drr_toguid; |
421 | wbr_drrr->drr_refguid = dataref.ref_guid; | |
422 | wbr_drrr->drr_refobject = | |
423 | dataref.ref_object; | |
424 | wbr_drrr->drr_refoffset = | |
425 | dataref.ref_offset; | |
426 | ||
427 | wbr_drrr->drr_checksumtype = | |
428 | drrw->drr_checksumtype; | |
429 | wbr_drrr->drr_checksumflags = | |
cae5b340 | 430 | drrw->drr_checksumflags; |
428870ff BB |
431 | wbr_drrr->drr_key.ddk_cksum = |
432 | drrw->drr_key.ddk_cksum; | |
433 | wbr_drrr->drr_key.ddk_prop = | |
434 | drrw->drr_key.ddk_prop; | |
435 | ||
cae5b340 AX |
436 | if (dump_record(&wbr_drr, NULL, 0, |
437 | &stream_cksum, outfd) != 0) | |
428870ff BB |
438 | goto out; |
439 | } else { | |
440 | /* block not previously seen */ | |
cae5b340 AX |
441 | if (dump_record(drr, buf, payload_size, |
442 | &stream_cksum, outfd) != 0) | |
428870ff BB |
443 | goto out; |
444 | } | |
445 | break; | |
446 | } | |
447 | ||
ea04106b AX |
448 | case DRR_WRITE_EMBEDDED: |
449 | { | |
cae5b340 AX |
450 | struct drr_write_embedded *drrwe = |
451 | &drr->drr_u.drr_write_embedded; | |
ea04106b AX |
452 | (void) ssread(buf, |
453 | P2ROUNDUP((uint64_t)drrwe->drr_psize, 8), ofp); | |
cae5b340 | 454 | if (dump_record(drr, buf, |
ea04106b | 455 | P2ROUNDUP((uint64_t)drrwe->drr_psize, 8), |
cae5b340 | 456 | &stream_cksum, outfd) != 0) |
ea04106b AX |
457 | goto out; |
458 | break; | |
459 | } | |
460 | ||
428870ff BB |
461 | case DRR_FREE: |
462 | { | |
cae5b340 AX |
463 | if (dump_record(drr, NULL, 0, &stream_cksum, |
464 | outfd) != 0) | |
428870ff BB |
465 | goto out; |
466 | break; | |
467 | } | |
468 | ||
469 | default: | |
cae5b340 | 470 | (void) fprintf(stderr, "INVALID record type 0x%x\n", |
428870ff BB |
471 | drr->drr_type); |
472 | /* should never happen, so assert */ | |
473 | assert(B_FALSE); | |
474 | } | |
475 | } | |
476 | out: | |
477 | umem_cache_destroy(ddt.ddecache); | |
478 | free(ddt.dedup_hash_array); | |
479 | free(buf); | |
480 | (void) fclose(ofp); | |
481 | ||
482 | return (NULL); | |
483 | } | |
b128c09f | 484 | |
34dc7c2f BB |
485 | /* |
486 | * Routines for dealing with the AVL tree of fs-nvlists | |
487 | */ | |
488 | typedef struct fsavl_node { | |
489 | avl_node_t fn_node; | |
490 | nvlist_t *fn_nvfs; | |
491 | char *fn_snapname; | |
492 | uint64_t fn_guid; | |
493 | } fsavl_node_t; | |
494 | ||
495 | static int | |
496 | fsavl_compare(const void *arg1, const void *arg2) | |
497 | { | |
cae5b340 AX |
498 | const fsavl_node_t *fn1 = (const fsavl_node_t *)arg1; |
499 | const fsavl_node_t *fn2 = (const fsavl_node_t *)arg2; | |
34dc7c2f | 500 | |
cae5b340 | 501 | return (AVL_CMP(fn1->fn_guid, fn2->fn_guid)); |
34dc7c2f BB |
502 | } |
503 | ||
504 | /* | |
505 | * Given the GUID of a snapshot, find its containing filesystem and | |
506 | * (optionally) name. | |
507 | */ | |
508 | static nvlist_t * | |
509 | fsavl_find(avl_tree_t *avl, uint64_t snapguid, char **snapname) | |
510 | { | |
511 | fsavl_node_t fn_find; | |
512 | fsavl_node_t *fn; | |
513 | ||
514 | fn_find.fn_guid = snapguid; | |
515 | ||
516 | fn = avl_find(avl, &fn_find, NULL); | |
517 | if (fn) { | |
518 | if (snapname) | |
519 | *snapname = fn->fn_snapname; | |
520 | return (fn->fn_nvfs); | |
521 | } | |
522 | return (NULL); | |
523 | } | |
524 | ||
525 | static void | |
526 | fsavl_destroy(avl_tree_t *avl) | |
527 | { | |
528 | fsavl_node_t *fn; | |
529 | void *cookie; | |
530 | ||
531 | if (avl == NULL) | |
532 | return; | |
533 | ||
534 | cookie = NULL; | |
535 | while ((fn = avl_destroy_nodes(avl, &cookie)) != NULL) | |
536 | free(fn); | |
537 | avl_destroy(avl); | |
538 | free(avl); | |
539 | } | |
540 | ||
45d1cae3 BB |
541 | /* |
542 | * Given an nvlist, produce an avl tree of snapshots, ordered by guid | |
543 | */ | |
34dc7c2f BB |
544 | static avl_tree_t * |
545 | fsavl_create(nvlist_t *fss) | |
546 | { | |
547 | avl_tree_t *fsavl; | |
548 | nvpair_t *fselem = NULL; | |
549 | ||
550 | if ((fsavl = malloc(sizeof (avl_tree_t))) == NULL) | |
551 | return (NULL); | |
552 | ||
553 | avl_create(fsavl, fsavl_compare, sizeof (fsavl_node_t), | |
554 | offsetof(fsavl_node_t, fn_node)); | |
555 | ||
556 | while ((fselem = nvlist_next_nvpair(fss, fselem)) != NULL) { | |
557 | nvlist_t *nvfs, *snaps; | |
558 | nvpair_t *snapelem = NULL; | |
559 | ||
560 | VERIFY(0 == nvpair_value_nvlist(fselem, &nvfs)); | |
561 | VERIFY(0 == nvlist_lookup_nvlist(nvfs, "snaps", &snaps)); | |
562 | ||
563 | while ((snapelem = | |
564 | nvlist_next_nvpair(snaps, snapelem)) != NULL) { | |
565 | fsavl_node_t *fn; | |
566 | uint64_t guid; | |
567 | ||
568 | VERIFY(0 == nvpair_value_uint64(snapelem, &guid)); | |
569 | if ((fn = malloc(sizeof (fsavl_node_t))) == NULL) { | |
570 | fsavl_destroy(fsavl); | |
571 | return (NULL); | |
572 | } | |
573 | fn->fn_nvfs = nvfs; | |
574 | fn->fn_snapname = nvpair_name(snapelem); | |
575 | fn->fn_guid = guid; | |
576 | ||
577 | /* | |
578 | * Note: if there are multiple snaps with the | |
579 | * same GUID, we ignore all but one. | |
580 | */ | |
581 | if (avl_find(fsavl, fn, NULL) == NULL) | |
582 | avl_add(fsavl, fn); | |
583 | else | |
584 | free(fn); | |
585 | } | |
586 | } | |
587 | ||
588 | return (fsavl); | |
589 | } | |
590 | ||
591 | /* | |
592 | * Routines for dealing with the giant nvlist of fs-nvlists, etc. | |
593 | */ | |
594 | typedef struct send_data { | |
cae5b340 AX |
595 | /* |
596 | * assigned inside every recursive call, | |
597 | * restored from *_save on return: | |
598 | * | |
599 | * guid of fromsnap snapshot in parent dataset | |
600 | * txg of fromsnap snapshot in current dataset | |
601 | * txg of tosnap snapshot in current dataset | |
602 | */ | |
603 | ||
34dc7c2f | 604 | uint64_t parent_fromsnap_guid; |
cae5b340 AX |
605 | uint64_t fromsnap_txg; |
606 | uint64_t tosnap_txg; | |
607 | ||
608 | /* the nvlists get accumulated during depth-first traversal */ | |
34dc7c2f BB |
609 | nvlist_t *parent_snaps; |
610 | nvlist_t *fss; | |
b128c09f | 611 | nvlist_t *snapprops; |
cae5b340 AX |
612 | |
613 | /* send-receive configuration, does not change during traversal */ | |
614 | const char *fsname; | |
34dc7c2f BB |
615 | const char *fromsnap; |
616 | const char *tosnap; | |
428870ff | 617 | boolean_t recursive; |
cae5b340 | 618 | boolean_t verbose; |
ea04106b AX |
619 | boolean_t seenfrom; |
620 | boolean_t seento; | |
34dc7c2f BB |
621 | |
622 | /* | |
623 | * The header nvlist is of the following format: | |
624 | * { | |
625 | * "tosnap" -> string | |
626 | * "fromsnap" -> string (if incremental) | |
627 | * "fss" -> { | |
628 | * id -> { | |
629 | * | |
630 | * "name" -> string (full name; for debugging) | |
631 | * "parentfromsnap" -> number (guid of fromsnap in parent) | |
632 | * | |
633 | * "props" -> { name -> value (only if set here) } | |
634 | * "snaps" -> { name (lastname) -> number (guid) } | |
b128c09f | 635 | * "snapprops" -> { name (lastname) -> { name -> value } } |
34dc7c2f BB |
636 | * |
637 | * "origin" -> number (guid) (if clone) | |
638 | * "sent" -> boolean (not on-disk) | |
639 | * } | |
640 | * } | |
641 | * } | |
642 | * | |
643 | */ | |
644 | } send_data_t; | |
645 | ||
b128c09f BB |
646 | static void send_iterate_prop(zfs_handle_t *zhp, nvlist_t *nv); |
647 | ||
34dc7c2f BB |
648 | static int |
649 | send_iterate_snap(zfs_handle_t *zhp, void *arg) | |
650 | { | |
651 | send_data_t *sd = arg; | |
652 | uint64_t guid = zhp->zfs_dmustats.dds_guid; | |
cae5b340 | 653 | uint64_t txg = zhp->zfs_dmustats.dds_creation_txg; |
34dc7c2f | 654 | char *snapname; |
b128c09f | 655 | nvlist_t *nv; |
ea04106b | 656 | boolean_t isfromsnap, istosnap, istosnapwithnofrom; |
34dc7c2f BB |
657 | |
658 | snapname = strrchr(zhp->zfs_name, '@')+1; | |
ea04106b AX |
659 | isfromsnap = (sd->fromsnap != NULL && |
660 | strcmp(sd->fromsnap, snapname) == 0); | |
661 | istosnap = (sd->tosnap != NULL && (strcmp(sd->tosnap, snapname) == 0)); | |
662 | istosnapwithnofrom = (istosnap && sd->fromsnap == NULL); | |
34dc7c2f | 663 | |
cae5b340 AX |
664 | if (sd->tosnap_txg != 0 && txg > sd->tosnap_txg) { |
665 | if (sd->verbose) { | |
666 | (void) fprintf(stderr, dgettext(TEXT_DOMAIN, | |
667 | "skipping snapshot %s because it was created " | |
668 | "after the destination snapshot (%s)\n"), | |
669 | zhp->zfs_name, sd->tosnap); | |
670 | } | |
671 | zfs_close(zhp); | |
672 | return (0); | |
673 | } | |
674 | ||
34dc7c2f BB |
675 | VERIFY(0 == nvlist_add_uint64(sd->parent_snaps, snapname, guid)); |
676 | /* | |
677 | * NB: if there is no fromsnap here (it's a newly created fs in | |
678 | * an incremental replication), we will substitute the tosnap. | |
679 | */ | |
ea04106b | 680 | if (isfromsnap || (sd->parent_fromsnap_guid == 0 && istosnap)) { |
34dc7c2f BB |
681 | sd->parent_fromsnap_guid = guid; |
682 | } | |
683 | ||
ea04106b AX |
684 | if (!sd->recursive) { |
685 | if (!sd->seenfrom && isfromsnap) { | |
686 | sd->seenfrom = B_TRUE; | |
687 | zfs_close(zhp); | |
688 | return (0); | |
689 | } | |
690 | ||
691 | if ((sd->seento || !sd->seenfrom) && !istosnapwithnofrom) { | |
692 | zfs_close(zhp); | |
693 | return (0); | |
694 | } | |
695 | ||
696 | if (istosnap) | |
697 | sd->seento = B_TRUE; | |
698 | } | |
699 | ||
b128c09f BB |
700 | VERIFY(0 == nvlist_alloc(&nv, NV_UNIQUE_NAME, 0)); |
701 | send_iterate_prop(zhp, nv); | |
702 | VERIFY(0 == nvlist_add_nvlist(sd->snapprops, snapname, nv)); | |
703 | nvlist_free(nv); | |
704 | ||
34dc7c2f BB |
705 | zfs_close(zhp); |
706 | return (0); | |
707 | } | |
708 | ||
709 | static void | |
710 | send_iterate_prop(zfs_handle_t *zhp, nvlist_t *nv) | |
711 | { | |
712 | nvpair_t *elem = NULL; | |
713 | ||
714 | while ((elem = nvlist_next_nvpair(zhp->zfs_props, elem)) != NULL) { | |
715 | char *propname = nvpair_name(elem); | |
716 | zfs_prop_t prop = zfs_name_to_prop(propname); | |
717 | nvlist_t *propnv; | |
718 | ||
428870ff BB |
719 | if (!zfs_prop_user(propname)) { |
720 | /* | |
721 | * Realistically, this should never happen. However, | |
722 | * we want the ability to add DSL properties without | |
723 | * needing to make incompatible version changes. We | |
724 | * need to ignore unknown properties to allow older | |
725 | * software to still send datasets containing these | |
726 | * properties, with the unknown properties elided. | |
727 | */ | |
728 | if (prop == ZPROP_INVAL) | |
729 | continue; | |
9babb374 | 730 | |
428870ff BB |
731 | if (zfs_prop_readonly(prop)) |
732 | continue; | |
733 | } | |
34dc7c2f BB |
734 | |
735 | verify(nvpair_value_nvlist(elem, &propnv) == 0); | |
45d1cae3 BB |
736 | if (prop == ZFS_PROP_QUOTA || prop == ZFS_PROP_RESERVATION || |
737 | prop == ZFS_PROP_REFQUOTA || | |
738 | prop == ZFS_PROP_REFRESERVATION) { | |
428870ff | 739 | char *source; |
34dc7c2f BB |
740 | uint64_t value; |
741 | verify(nvlist_lookup_uint64(propnv, | |
742 | ZPROP_VALUE, &value) == 0); | |
b128c09f BB |
743 | if (zhp->zfs_type == ZFS_TYPE_SNAPSHOT) |
744 | continue; | |
428870ff BB |
745 | /* |
746 | * May have no source before SPA_VERSION_RECVD_PROPS, | |
747 | * but is still modifiable. | |
748 | */ | |
749 | if (nvlist_lookup_string(propnv, | |
750 | ZPROP_SOURCE, &source) == 0) { | |
751 | if ((strcmp(source, zhp->zfs_name) != 0) && | |
752 | (strcmp(source, | |
753 | ZPROP_SOURCE_VAL_RECVD) != 0)) | |
754 | continue; | |
755 | } | |
34dc7c2f BB |
756 | } else { |
757 | char *source; | |
758 | if (nvlist_lookup_string(propnv, | |
759 | ZPROP_SOURCE, &source) != 0) | |
760 | continue; | |
428870ff BB |
761 | if ((strcmp(source, zhp->zfs_name) != 0) && |
762 | (strcmp(source, ZPROP_SOURCE_VAL_RECVD) != 0)) | |
34dc7c2f BB |
763 | continue; |
764 | } | |
765 | ||
766 | if (zfs_prop_user(propname) || | |
767 | zfs_prop_get_type(prop) == PROP_TYPE_STRING) { | |
768 | char *value; | |
769 | verify(nvlist_lookup_string(propnv, | |
770 | ZPROP_VALUE, &value) == 0); | |
771 | VERIFY(0 == nvlist_add_string(nv, propname, value)); | |
772 | } else { | |
773 | uint64_t value; | |
774 | verify(nvlist_lookup_uint64(propnv, | |
775 | ZPROP_VALUE, &value) == 0); | |
776 | VERIFY(0 == nvlist_add_uint64(nv, propname, value)); | |
777 | } | |
778 | } | |
779 | } | |
780 | ||
cae5b340 AX |
781 | /* |
782 | * returns snapshot creation txg | |
783 | * and returns 0 if the snapshot does not exist | |
784 | */ | |
785 | static uint64_t | |
786 | get_snap_txg(libzfs_handle_t *hdl, const char *fs, const char *snap) | |
787 | { | |
788 | char name[ZFS_MAX_DATASET_NAME_LEN]; | |
789 | uint64_t txg = 0; | |
790 | ||
791 | if (fs == NULL || fs[0] == '\0' || snap == NULL || snap[0] == '\0') | |
792 | return (txg); | |
793 | ||
794 | (void) snprintf(name, sizeof (name), "%s@%s", fs, snap); | |
795 | if (zfs_dataset_exists(hdl, name, ZFS_TYPE_SNAPSHOT)) { | |
796 | zfs_handle_t *zhp = zfs_open(hdl, name, ZFS_TYPE_SNAPSHOT); | |
797 | if (zhp != NULL) { | |
798 | txg = zfs_prop_get_int(zhp, ZFS_PROP_CREATETXG); | |
799 | zfs_close(zhp); | |
800 | } | |
801 | } | |
802 | ||
803 | return (txg); | |
804 | } | |
805 | ||
45d1cae3 BB |
806 | /* |
807 | * recursively generate nvlists describing datasets. See comment | |
808 | * for the data structure send_data_t above for description of contents | |
809 | * of the nvlist. | |
810 | */ | |
34dc7c2f BB |
811 | static int |
812 | send_iterate_fs(zfs_handle_t *zhp, void *arg) | |
813 | { | |
814 | send_data_t *sd = arg; | |
815 | nvlist_t *nvfs, *nv; | |
428870ff | 816 | int rv = 0; |
34dc7c2f | 817 | uint64_t parent_fromsnap_guid_save = sd->parent_fromsnap_guid; |
cae5b340 AX |
818 | uint64_t fromsnap_txg_save = sd->fromsnap_txg; |
819 | uint64_t tosnap_txg_save = sd->tosnap_txg; | |
820 | uint64_t txg = zhp->zfs_dmustats.dds_creation_txg; | |
34dc7c2f | 821 | uint64_t guid = zhp->zfs_dmustats.dds_guid; |
cae5b340 | 822 | uint64_t fromsnap_txg, tosnap_txg; |
34dc7c2f BB |
823 | char guidstring[64]; |
824 | ||
cae5b340 AX |
825 | fromsnap_txg = get_snap_txg(zhp->zfs_hdl, zhp->zfs_name, sd->fromsnap); |
826 | if (fromsnap_txg != 0) | |
827 | sd->fromsnap_txg = fromsnap_txg; | |
828 | ||
829 | tosnap_txg = get_snap_txg(zhp->zfs_hdl, zhp->zfs_name, sd->tosnap); | |
830 | if (tosnap_txg != 0) | |
831 | sd->tosnap_txg = tosnap_txg; | |
832 | ||
833 | /* | |
834 | * on the send side, if the current dataset does not have tosnap, | |
835 | * perform two additional checks: | |
836 | * | |
837 | * - skip sending the current dataset if it was created later than | |
838 | * the parent tosnap | |
839 | * - return error if the current dataset was created earlier than | |
840 | * the parent tosnap | |
841 | */ | |
842 | if (sd->tosnap != NULL && tosnap_txg == 0) { | |
843 | if (sd->tosnap_txg != 0 && txg > sd->tosnap_txg) { | |
844 | if (sd->verbose) { | |
845 | (void) fprintf(stderr, dgettext(TEXT_DOMAIN, | |
846 | "skipping dataset %s: snapshot %s does " | |
847 | "not exist\n"), zhp->zfs_name, sd->tosnap); | |
848 | } | |
849 | } else { | |
850 | (void) fprintf(stderr, dgettext(TEXT_DOMAIN, | |
851 | "cannot send %s@%s%s: snapshot %s@%s does not " | |
852 | "exist\n"), sd->fsname, sd->tosnap, sd->recursive ? | |
853 | dgettext(TEXT_DOMAIN, " recursively") : "", | |
854 | zhp->zfs_name, sd->tosnap); | |
855 | rv = -1; | |
856 | } | |
857 | goto out; | |
858 | } | |
859 | ||
34dc7c2f BB |
860 | VERIFY(0 == nvlist_alloc(&nvfs, NV_UNIQUE_NAME, 0)); |
861 | VERIFY(0 == nvlist_add_string(nvfs, "name", zhp->zfs_name)); | |
862 | VERIFY(0 == nvlist_add_uint64(nvfs, "parentfromsnap", | |
863 | sd->parent_fromsnap_guid)); | |
864 | ||
865 | if (zhp->zfs_dmustats.dds_origin[0]) { | |
866 | zfs_handle_t *origin = zfs_open(zhp->zfs_hdl, | |
867 | zhp->zfs_dmustats.dds_origin, ZFS_TYPE_SNAPSHOT); | |
cae5b340 AX |
868 | if (origin == NULL) { |
869 | rv = -1; | |
870 | goto out; | |
871 | } | |
34dc7c2f BB |
872 | VERIFY(0 == nvlist_add_uint64(nvfs, "origin", |
873 | origin->zfs_dmustats.dds_guid)); | |
cae5b340 AX |
874 | |
875 | zfs_close(origin); | |
34dc7c2f BB |
876 | } |
877 | ||
878 | /* iterate over props */ | |
879 | VERIFY(0 == nvlist_alloc(&nv, NV_UNIQUE_NAME, 0)); | |
880 | send_iterate_prop(zhp, nv); | |
881 | VERIFY(0 == nvlist_add_nvlist(nvfs, "props", nv)); | |
882 | nvlist_free(nv); | |
883 | ||
884 | /* iterate over snaps, and set sd->parent_fromsnap_guid */ | |
885 | sd->parent_fromsnap_guid = 0; | |
886 | VERIFY(0 == nvlist_alloc(&sd->parent_snaps, NV_UNIQUE_NAME, 0)); | |
b128c09f | 887 | VERIFY(0 == nvlist_alloc(&sd->snapprops, NV_UNIQUE_NAME, 0)); |
ea04106b | 888 | (void) zfs_iter_snapshots_sorted(zhp, send_iterate_snap, sd); |
34dc7c2f | 889 | VERIFY(0 == nvlist_add_nvlist(nvfs, "snaps", sd->parent_snaps)); |
b128c09f | 890 | VERIFY(0 == nvlist_add_nvlist(nvfs, "snapprops", sd->snapprops)); |
34dc7c2f | 891 | nvlist_free(sd->parent_snaps); |
b128c09f | 892 | nvlist_free(sd->snapprops); |
34dc7c2f BB |
893 | |
894 | /* add this fs to nvlist */ | |
895 | (void) snprintf(guidstring, sizeof (guidstring), | |
896 | "0x%llx", (longlong_t)guid); | |
897 | VERIFY(0 == nvlist_add_nvlist(sd->fss, guidstring, nvfs)); | |
898 | nvlist_free(nvfs); | |
899 | ||
900 | /* iterate over children */ | |
428870ff BB |
901 | if (sd->recursive) |
902 | rv = zfs_iter_filesystems(zhp, send_iterate_fs, sd); | |
34dc7c2f | 903 | |
cae5b340 | 904 | out: |
34dc7c2f | 905 | sd->parent_fromsnap_guid = parent_fromsnap_guid_save; |
cae5b340 AX |
906 | sd->fromsnap_txg = fromsnap_txg_save; |
907 | sd->tosnap_txg = tosnap_txg_save; | |
34dc7c2f BB |
908 | |
909 | zfs_close(zhp); | |
910 | return (rv); | |
911 | } | |
912 | ||
913 | static int | |
914 | gather_nvlist(libzfs_handle_t *hdl, const char *fsname, const char *fromsnap, | |
cae5b340 AX |
915 | const char *tosnap, boolean_t recursive, boolean_t verbose, |
916 | nvlist_t **nvlp, avl_tree_t **avlp) | |
34dc7c2f BB |
917 | { |
918 | zfs_handle_t *zhp; | |
919 | send_data_t sd = { 0 }; | |
920 | int error; | |
921 | ||
922 | zhp = zfs_open(hdl, fsname, ZFS_TYPE_FILESYSTEM | ZFS_TYPE_VOLUME); | |
923 | if (zhp == NULL) | |
924 | return (EZFS_BADTYPE); | |
925 | ||
926 | VERIFY(0 == nvlist_alloc(&sd.fss, NV_UNIQUE_NAME, 0)); | |
cae5b340 | 927 | sd.fsname = fsname; |
34dc7c2f BB |
928 | sd.fromsnap = fromsnap; |
929 | sd.tosnap = tosnap; | |
428870ff | 930 | sd.recursive = recursive; |
cae5b340 | 931 | sd.verbose = verbose; |
34dc7c2f BB |
932 | |
933 | if ((error = send_iterate_fs(zhp, &sd)) != 0) { | |
934 | nvlist_free(sd.fss); | |
935 | if (avlp != NULL) | |
936 | *avlp = NULL; | |
937 | *nvlp = NULL; | |
938 | return (error); | |
939 | } | |
940 | ||
941 | if (avlp != NULL && (*avlp = fsavl_create(sd.fss)) == NULL) { | |
942 | nvlist_free(sd.fss); | |
943 | *nvlp = NULL; | |
944 | return (EZFS_NOMEM); | |
945 | } | |
946 | ||
947 | *nvlp = sd.fss; | |
948 | return (0); | |
949 | } | |
950 | ||
34dc7c2f BB |
951 | /* |
952 | * Routines specific to "zfs send" | |
953 | */ | |
954 | typedef struct send_dump_data { | |
955 | /* these are all just the short snapname (the part after the @) */ | |
956 | const char *fromsnap; | |
957 | const char *tosnap; | |
cae5b340 | 958 | char prevsnap[ZFS_MAX_DATASET_NAME_LEN]; |
572e2857 | 959 | uint64_t prevsnap_obj; |
34dc7c2f | 960 | boolean_t seenfrom, seento, replicate, doall, fromorigin; |
e10b0808 | 961 | boolean_t verbose, dryrun, parsable, progress, embed_data, std_out; |
cae5b340 | 962 | boolean_t large_block, compress; |
34dc7c2f BB |
963 | int outfd; |
964 | boolean_t err; | |
965 | nvlist_t *fss; | |
a08ee875 | 966 | nvlist_t *snapholds; |
34dc7c2f | 967 | avl_tree_t *fsavl; |
428870ff BB |
968 | snapfilter_cb_t *filter_cb; |
969 | void *filter_cb_arg; | |
970 | nvlist_t *debugnv; | |
cae5b340 | 971 | char holdtag[ZFS_MAX_DATASET_NAME_LEN]; |
572e2857 | 972 | int cleanup_fd; |
330d06f9 | 973 | uint64_t size; |
34dc7c2f BB |
974 | } send_dump_data_t; |
975 | ||
330d06f9 MA |
976 | static int |
977 | estimate_ioctl(zfs_handle_t *zhp, uint64_t fromsnap_obj, | |
cae5b340 | 978 | boolean_t fromorigin, enum lzc_send_flags flags, uint64_t *sizep) |
330d06f9 | 979 | { |
a08ee875 | 980 | zfs_cmd_t zc = {"\0"}; |
330d06f9 MA |
981 | libzfs_handle_t *hdl = zhp->zfs_hdl; |
982 | ||
983 | assert(zhp->zfs_type == ZFS_TYPE_SNAPSHOT); | |
984 | assert(fromsnap_obj == 0 || !fromorigin); | |
985 | ||
986 | (void) strlcpy(zc.zc_name, zhp->zfs_name, sizeof (zc.zc_name)); | |
987 | zc.zc_obj = fromorigin; | |
988 | zc.zc_sendobj = zfs_prop_get_int(zhp, ZFS_PROP_OBJSETID); | |
989 | zc.zc_fromobj = fromsnap_obj; | |
990 | zc.zc_guid = 1; /* estimate flag */ | |
cae5b340 | 991 | zc.zc_flags = flags; |
330d06f9 MA |
992 | |
993 | if (zfs_ioctl(zhp->zfs_hdl, ZFS_IOC_SEND, &zc) != 0) { | |
994 | char errbuf[1024]; | |
995 | (void) snprintf(errbuf, sizeof (errbuf), dgettext(TEXT_DOMAIN, | |
996 | "warning: cannot estimate space for '%s'"), zhp->zfs_name); | |
997 | ||
998 | switch (errno) { | |
999 | case EXDEV: | |
1000 | zfs_error_aux(hdl, dgettext(TEXT_DOMAIN, | |
1001 | "not an earlier snapshot from the same fs")); | |
1002 | return (zfs_error(hdl, EZFS_CROSSTARGET, errbuf)); | |
1003 | ||
1004 | case ENOENT: | |
1005 | if (zfs_dataset_exists(hdl, zc.zc_name, | |
1006 | ZFS_TYPE_SNAPSHOT)) { | |
1007 | zfs_error_aux(hdl, dgettext(TEXT_DOMAIN, | |
1008 | "incremental source (@%s) does not exist"), | |
1009 | zc.zc_value); | |
1010 | } | |
1011 | return (zfs_error(hdl, EZFS_NOENT, errbuf)); | |
1012 | ||
1013 | case EDQUOT: | |
1014 | case EFBIG: | |
1015 | case EIO: | |
1016 | case ENOLINK: | |
1017 | case ENOSPC: | |
1018 | case ENOSTR: | |
1019 | case ENXIO: | |
1020 | case EPIPE: | |
1021 | case ERANGE: | |
1022 | case EFAULT: | |
1023 | case EROFS: | |
1024 | zfs_error_aux(hdl, strerror(errno)); | |
1025 | return (zfs_error(hdl, EZFS_BADBACKUP, errbuf)); | |
1026 | ||
1027 | default: | |
1028 | return (zfs_standard_error(hdl, errno, errbuf)); | |
1029 | } | |
1030 | } | |
1031 | ||
1032 | *sizep = zc.zc_objset_type; | |
1033 | ||
1034 | return (0); | |
1035 | } | |
1036 | ||
34dc7c2f BB |
1037 | /* |
1038 | * Dumps a backup of the given snapshot (incremental from fromsnap if it's not | |
1039 | * NULL) to the file descriptor specified by outfd. | |
1040 | */ | |
1041 | static int | |
572e2857 | 1042 | dump_ioctl(zfs_handle_t *zhp, const char *fromsnap, uint64_t fromsnap_obj, |
ea04106b AX |
1043 | boolean_t fromorigin, int outfd, enum lzc_send_flags flags, |
1044 | nvlist_t *debugnv) | |
34dc7c2f | 1045 | { |
a08ee875 | 1046 | zfs_cmd_t zc = {"\0"}; |
34dc7c2f | 1047 | libzfs_handle_t *hdl = zhp->zfs_hdl; |
428870ff | 1048 | nvlist_t *thisdbg; |
34dc7c2f BB |
1049 | |
1050 | assert(zhp->zfs_type == ZFS_TYPE_SNAPSHOT); | |
572e2857 | 1051 | assert(fromsnap_obj == 0 || !fromorigin); |
34dc7c2f BB |
1052 | |
1053 | (void) strlcpy(zc.zc_name, zhp->zfs_name, sizeof (zc.zc_name)); | |
34dc7c2f BB |
1054 | zc.zc_cookie = outfd; |
1055 | zc.zc_obj = fromorigin; | |
572e2857 BB |
1056 | zc.zc_sendobj = zfs_prop_get_int(zhp, ZFS_PROP_OBJSETID); |
1057 | zc.zc_fromobj = fromsnap_obj; | |
ea04106b | 1058 | zc.zc_flags = flags; |
428870ff BB |
1059 | |
1060 | VERIFY(0 == nvlist_alloc(&thisdbg, NV_UNIQUE_NAME, 0)); | |
1061 | if (fromsnap && fromsnap[0] != '\0') { | |
1062 | VERIFY(0 == nvlist_add_string(thisdbg, | |
1063 | "fromsnap", fromsnap)); | |
1064 | } | |
1065 | ||
330d06f9 | 1066 | if (zfs_ioctl(zhp->zfs_hdl, ZFS_IOC_SEND, &zc) != 0) { |
34dc7c2f BB |
1067 | char errbuf[1024]; |
1068 | (void) snprintf(errbuf, sizeof (errbuf), dgettext(TEXT_DOMAIN, | |
1069 | "warning: cannot send '%s'"), zhp->zfs_name); | |
1070 | ||
428870ff BB |
1071 | VERIFY(0 == nvlist_add_uint64(thisdbg, "error", errno)); |
1072 | if (debugnv) { | |
1073 | VERIFY(0 == nvlist_add_nvlist(debugnv, | |
1074 | zhp->zfs_name, thisdbg)); | |
1075 | } | |
1076 | nvlist_free(thisdbg); | |
1077 | ||
34dc7c2f | 1078 | switch (errno) { |
34dc7c2f BB |
1079 | case EXDEV: |
1080 | zfs_error_aux(hdl, dgettext(TEXT_DOMAIN, | |
1081 | "not an earlier snapshot from the same fs")); | |
1082 | return (zfs_error(hdl, EZFS_CROSSTARGET, errbuf)); | |
1083 | ||
1084 | case ENOENT: | |
1085 | if (zfs_dataset_exists(hdl, zc.zc_name, | |
1086 | ZFS_TYPE_SNAPSHOT)) { | |
1087 | zfs_error_aux(hdl, dgettext(TEXT_DOMAIN, | |
1088 | "incremental source (@%s) does not exist"), | |
1089 | zc.zc_value); | |
1090 | } | |
1091 | return (zfs_error(hdl, EZFS_NOENT, errbuf)); | |
1092 | ||
1093 | case EDQUOT: | |
1094 | case EFBIG: | |
1095 | case EIO: | |
1096 | case ENOLINK: | |
1097 | case ENOSPC: | |
1098 | case ENOSTR: | |
1099 | case ENXIO: | |
1100 | case EPIPE: | |
1101 | case ERANGE: | |
1102 | case EFAULT: | |
1103 | case EROFS: | |
1104 | zfs_error_aux(hdl, strerror(errno)); | |
1105 | return (zfs_error(hdl, EZFS_BADBACKUP, errbuf)); | |
1106 | ||
1107 | default: | |
1108 | return (zfs_standard_error(hdl, errno, errbuf)); | |
1109 | } | |
1110 | } | |
1111 | ||
428870ff BB |
1112 | if (debugnv) |
1113 | VERIFY(0 == nvlist_add_nvlist(debugnv, zhp->zfs_name, thisdbg)); | |
1114 | nvlist_free(thisdbg); | |
1115 | ||
34dc7c2f BB |
1116 | return (0); |
1117 | } | |
1118 | ||
a08ee875 LG |
1119 | static void |
1120 | gather_holds(zfs_handle_t *zhp, send_dump_data_t *sdd) | |
572e2857 | 1121 | { |
572e2857 BB |
1122 | assert(zhp->zfs_type == ZFS_TYPE_SNAPSHOT); |
1123 | ||
1124 | /* | |
a08ee875 | 1125 | * zfs_send() only sets snapholds for sends that need them, |
572e2857 BB |
1126 | * e.g. replication and doall. |
1127 | */ | |
a08ee875 LG |
1128 | if (sdd->snapholds == NULL) |
1129 | return; | |
572e2857 | 1130 | |
a08ee875 | 1131 | fnvlist_add_string(sdd->snapholds, zhp->zfs_name, sdd->holdtag); |
572e2857 BB |
1132 | } |
1133 | ||
37abac6d BP |
1134 | static void * |
1135 | send_progress_thread(void *arg) | |
1136 | { | |
1137 | progress_arg_t *pa = arg; | |
a08ee875 | 1138 | zfs_cmd_t zc = {"\0"}; |
37abac6d BP |
1139 | zfs_handle_t *zhp = pa->pa_zhp; |
1140 | libzfs_handle_t *hdl = zhp->zfs_hdl; | |
1141 | unsigned long long bytes; | |
1142 | char buf[16]; | |
37abac6d BP |
1143 | time_t t; |
1144 | struct tm *tm; | |
1145 | ||
37abac6d BP |
1146 | (void) strlcpy(zc.zc_name, zhp->zfs_name, sizeof (zc.zc_name)); |
1147 | ||
1148 | if (!pa->pa_parsable) | |
1149 | (void) fprintf(stderr, "TIME SENT SNAPSHOT\n"); | |
1150 | ||
1151 | /* | |
1152 | * Print the progress from ZFS_IOC_SEND_PROGRESS every second. | |
1153 | */ | |
1154 | for (;;) { | |
1155 | (void) sleep(1); | |
1156 | ||
1157 | zc.zc_cookie = pa->pa_fd; | |
1158 | if (zfs_ioctl(hdl, ZFS_IOC_SEND_PROGRESS, &zc) != 0) | |
1159 | return ((void *)-1); | |
1160 | ||
1161 | (void) time(&t); | |
1162 | tm = localtime(&t); | |
1163 | bytes = zc.zc_cookie; | |
1164 | ||
1165 | if (pa->pa_parsable) { | |
1166 | (void) fprintf(stderr, "%02d:%02d:%02d\t%llu\t%s\n", | |
1167 | tm->tm_hour, tm->tm_min, tm->tm_sec, | |
1168 | bytes, zhp->zfs_name); | |
1169 | } else { | |
cae5b340 | 1170 | zfs_nicebytes(bytes, buf, sizeof (buf)); |
37abac6d BP |
1171 | (void) fprintf(stderr, "%02d:%02d:%02d %5s %s\n", |
1172 | tm->tm_hour, tm->tm_min, tm->tm_sec, | |
1173 | buf, zhp->zfs_name); | |
1174 | } | |
1175 | } | |
1176 | } | |
1177 | ||
cae5b340 AX |
1178 | static void |
1179 | send_print_verbose(FILE *fout, const char *tosnap, const char *fromsnap, | |
1180 | uint64_t size, boolean_t parsable) | |
1181 | { | |
1182 | if (parsable) { | |
1183 | if (fromsnap != NULL) { | |
1184 | (void) fprintf(fout, "incremental\t%s\t%s", | |
1185 | fromsnap, tosnap); | |
1186 | } else { | |
1187 | (void) fprintf(fout, "full\t%s", | |
1188 | tosnap); | |
1189 | } | |
1190 | } else { | |
1191 | if (fromsnap != NULL) { | |
1192 | if (strchr(fromsnap, '@') == NULL && | |
1193 | strchr(fromsnap, '#') == NULL) { | |
1194 | (void) fprintf(fout, dgettext(TEXT_DOMAIN, | |
1195 | "send from @%s to %s"), | |
1196 | fromsnap, tosnap); | |
1197 | } else { | |
1198 | (void) fprintf(fout, dgettext(TEXT_DOMAIN, | |
1199 | "send from %s to %s"), | |
1200 | fromsnap, tosnap); | |
1201 | } | |
1202 | } else { | |
1203 | (void) fprintf(fout, dgettext(TEXT_DOMAIN, | |
1204 | "full send of %s"), | |
1205 | tosnap); | |
1206 | } | |
1207 | } | |
1208 | ||
1209 | if (size != 0) { | |
1210 | if (parsable) { | |
1211 | (void) fprintf(fout, "\t%llu", | |
1212 | (longlong_t)size); | |
1213 | } else { | |
1214 | char buf[16]; | |
1215 | zfs_nicebytes(size, buf, sizeof (buf)); | |
1216 | (void) fprintf(fout, dgettext(TEXT_DOMAIN, | |
1217 | " estimated size is %s"), buf); | |
1218 | } | |
1219 | } | |
1220 | (void) fprintf(fout, "\n"); | |
1221 | } | |
1222 | ||
34dc7c2f BB |
1223 | static int |
1224 | dump_snapshot(zfs_handle_t *zhp, void *arg) | |
1225 | { | |
1226 | send_dump_data_t *sdd = arg; | |
37abac6d BP |
1227 | progress_arg_t pa = { 0 }; |
1228 | pthread_t tid; | |
572e2857 | 1229 | char *thissnap; |
cae5b340 | 1230 | enum lzc_send_flags flags = 0; |
34dc7c2f | 1231 | int err; |
330d06f9 | 1232 | boolean_t isfromsnap, istosnap, fromorigin; |
428870ff | 1233 | boolean_t exclude = B_FALSE; |
e10b0808 | 1234 | FILE *fout = sdd->std_out ? stdout : stderr; |
34dc7c2f | 1235 | |
a08ee875 | 1236 | err = 0; |
34dc7c2f | 1237 | thissnap = strchr(zhp->zfs_name, '@') + 1; |
428870ff BB |
1238 | isfromsnap = (sdd->fromsnap != NULL && |
1239 | strcmp(sdd->fromsnap, thissnap) == 0); | |
34dc7c2f | 1240 | |
428870ff | 1241 | if (!sdd->seenfrom && isfromsnap) { |
a08ee875 LG |
1242 | gather_holds(zhp, sdd); |
1243 | sdd->seenfrom = B_TRUE; | |
cae5b340 AX |
1244 | (void) strlcpy(sdd->prevsnap, thissnap, |
1245 | sizeof (sdd->prevsnap)); | |
a08ee875 | 1246 | sdd->prevsnap_obj = zfs_prop_get_int(zhp, ZFS_PROP_OBJSETID); |
34dc7c2f | 1247 | zfs_close(zhp); |
a08ee875 | 1248 | return (0); |
34dc7c2f BB |
1249 | } |
1250 | ||
1251 | if (sdd->seento || !sdd->seenfrom) { | |
1252 | zfs_close(zhp); | |
1253 | return (0); | |
1254 | } | |
1255 | ||
428870ff BB |
1256 | istosnap = (strcmp(sdd->tosnap, thissnap) == 0); |
1257 | if (istosnap) | |
1258 | sdd->seento = B_TRUE; | |
1259 | ||
cae5b340 AX |
1260 | if (sdd->large_block) |
1261 | flags |= LZC_SEND_FLAG_LARGE_BLOCK; | |
1262 | if (sdd->embed_data) | |
1263 | flags |= LZC_SEND_FLAG_EMBED_DATA; | |
1264 | if (sdd->compress) | |
1265 | flags |= LZC_SEND_FLAG_COMPRESS; | |
1266 | ||
428870ff BB |
1267 | if (!sdd->doall && !isfromsnap && !istosnap) { |
1268 | if (sdd->replicate) { | |
1269 | char *snapname; | |
1270 | nvlist_t *snapprops; | |
1271 | /* | |
1272 | * Filter out all intermediate snapshots except origin | |
1273 | * snapshots needed to replicate clones. | |
1274 | */ | |
1275 | nvlist_t *nvfs = fsavl_find(sdd->fsavl, | |
1276 | zhp->zfs_dmustats.dds_guid, &snapname); | |
1277 | ||
1278 | VERIFY(0 == nvlist_lookup_nvlist(nvfs, | |
1279 | "snapprops", &snapprops)); | |
1280 | VERIFY(0 == nvlist_lookup_nvlist(snapprops, | |
1281 | thissnap, &snapprops)); | |
1282 | exclude = !nvlist_exists(snapprops, "is_clone_origin"); | |
1283 | } else { | |
1284 | exclude = B_TRUE; | |
1285 | } | |
1286 | } | |
1287 | ||
1288 | /* | |
1289 | * If a filter function exists, call it to determine whether | |
1290 | * this snapshot will be sent. | |
1291 | */ | |
1292 | if (exclude || (sdd->filter_cb != NULL && | |
1293 | sdd->filter_cb(zhp, sdd->filter_cb_arg) == B_FALSE)) { | |
1294 | /* | |
1295 | * This snapshot is filtered out. Don't send it, and don't | |
572e2857 | 1296 | * set prevsnap_obj, so it will be as if this snapshot didn't |
428870ff BB |
1297 | * exist, and the next accepted snapshot will be sent as |
1298 | * an incremental from the last accepted one, or as the | |
1299 | * first (and full) snapshot in the case of a replication, | |
1300 | * non-incremental send. | |
1301 | */ | |
1302 | zfs_close(zhp); | |
1303 | return (0); | |
1304 | } | |
1305 | ||
a08ee875 | 1306 | gather_holds(zhp, sdd); |
330d06f9 MA |
1307 | fromorigin = sdd->prevsnap[0] == '\0' && |
1308 | (sdd->fromorigin || sdd->replicate); | |
1309 | ||
34dc7c2f | 1310 | if (sdd->verbose) { |
cae5b340 AX |
1311 | uint64_t size = 0; |
1312 | (void) estimate_ioctl(zhp, sdd->prevsnap_obj, | |
1313 | fromorigin, flags, &size); | |
1314 | ||
1315 | send_print_verbose(fout, zhp->zfs_name, | |
1316 | sdd->prevsnap[0] ? sdd->prevsnap : NULL, | |
1317 | size, sdd->parsable); | |
1318 | sdd->size += size; | |
34dc7c2f BB |
1319 | } |
1320 | ||
330d06f9 | 1321 | if (!sdd->dryrun) { |
37abac6d BP |
1322 | /* |
1323 | * If progress reporting is requested, spawn a new thread to | |
1324 | * poll ZFS_IOC_SEND_PROGRESS at a regular interval. | |
1325 | */ | |
1326 | if (sdd->progress) { | |
1327 | pa.pa_zhp = zhp; | |
1328 | pa.pa_fd = sdd->outfd; | |
1329 | pa.pa_parsable = sdd->parsable; | |
1330 | ||
1331 | if ((err = pthread_create(&tid, NULL, | |
cae5b340 | 1332 | send_progress_thread, &pa)) != 0) { |
37abac6d BP |
1333 | zfs_close(zhp); |
1334 | return (err); | |
1335 | } | |
1336 | } | |
1337 | ||
330d06f9 | 1338 | err = dump_ioctl(zhp, sdd->prevsnap, sdd->prevsnap_obj, |
ea04106b | 1339 | fromorigin, sdd->outfd, flags, sdd->debugnv); |
37abac6d BP |
1340 | |
1341 | if (sdd->progress) { | |
1342 | (void) pthread_cancel(tid); | |
1343 | (void) pthread_join(tid, NULL); | |
1344 | } | |
330d06f9 | 1345 | } |
34dc7c2f | 1346 | |
572e2857 BB |
1347 | (void) strcpy(sdd->prevsnap, thissnap); |
1348 | sdd->prevsnap_obj = zfs_prop_get_int(zhp, ZFS_PROP_OBJSETID); | |
34dc7c2f BB |
1349 | zfs_close(zhp); |
1350 | return (err); | |
1351 | } | |
1352 | ||
1353 | static int | |
1354 | dump_filesystem(zfs_handle_t *zhp, void *arg) | |
1355 | { | |
1356 | int rv = 0; | |
1357 | send_dump_data_t *sdd = arg; | |
1358 | boolean_t missingfrom = B_FALSE; | |
a08ee875 | 1359 | zfs_cmd_t zc = {"\0"}; |
34dc7c2f BB |
1360 | |
1361 | (void) snprintf(zc.zc_name, sizeof (zc.zc_name), "%s@%s", | |
1362 | zhp->zfs_name, sdd->tosnap); | |
1363 | if (ioctl(zhp->zfs_hdl->libzfs_fd, ZFS_IOC_OBJSET_STATS, &zc) != 0) { | |
330d06f9 MA |
1364 | (void) fprintf(stderr, dgettext(TEXT_DOMAIN, |
1365 | "WARNING: could not send %s@%s: does not exist\n"), | |
34dc7c2f BB |
1366 | zhp->zfs_name, sdd->tosnap); |
1367 | sdd->err = B_TRUE; | |
1368 | return (0); | |
1369 | } | |
1370 | ||
1371 | if (sdd->replicate && sdd->fromsnap) { | |
1372 | /* | |
1373 | * If this fs does not have fromsnap, and we're doing | |
1374 | * recursive, we need to send a full stream from the | |
1375 | * beginning (or an incremental from the origin if this | |
1376 | * is a clone). If we're doing non-recursive, then let | |
1377 | * them get the error. | |
1378 | */ | |
1379 | (void) snprintf(zc.zc_name, sizeof (zc.zc_name), "%s@%s", | |
1380 | zhp->zfs_name, sdd->fromsnap); | |
1381 | if (ioctl(zhp->zfs_hdl->libzfs_fd, | |
1382 | ZFS_IOC_OBJSET_STATS, &zc) != 0) { | |
1383 | missingfrom = B_TRUE; | |
1384 | } | |
1385 | } | |
1386 | ||
428870ff | 1387 | sdd->seenfrom = sdd->seento = sdd->prevsnap[0] = 0; |
572e2857 | 1388 | sdd->prevsnap_obj = 0; |
428870ff BB |
1389 | if (sdd->fromsnap == NULL || missingfrom) |
1390 | sdd->seenfrom = B_TRUE; | |
34dc7c2f | 1391 | |
428870ff BB |
1392 | rv = zfs_iter_snapshots_sorted(zhp, dump_snapshot, arg); |
1393 | if (!sdd->seenfrom) { | |
330d06f9 | 1394 | (void) fprintf(stderr, dgettext(TEXT_DOMAIN, |
428870ff | 1395 | "WARNING: could not send %s@%s:\n" |
330d06f9 | 1396 | "incremental source (%s@%s) does not exist\n"), |
428870ff BB |
1397 | zhp->zfs_name, sdd->tosnap, |
1398 | zhp->zfs_name, sdd->fromsnap); | |
1399 | sdd->err = B_TRUE; | |
1400 | } else if (!sdd->seento) { | |
1401 | if (sdd->fromsnap) { | |
330d06f9 | 1402 | (void) fprintf(stderr, dgettext(TEXT_DOMAIN, |
34dc7c2f | 1403 | "WARNING: could not send %s@%s:\n" |
428870ff | 1404 | "incremental source (%s@%s) " |
330d06f9 | 1405 | "is not earlier than it\n"), |
34dc7c2f BB |
1406 | zhp->zfs_name, sdd->tosnap, |
1407 | zhp->zfs_name, sdd->fromsnap); | |
34dc7c2f | 1408 | } else { |
330d06f9 MA |
1409 | (void) fprintf(stderr, dgettext(TEXT_DOMAIN, |
1410 | "WARNING: " | |
1411 | "could not send %s@%s: does not exist\n"), | |
428870ff | 1412 | zhp->zfs_name, sdd->tosnap); |
34dc7c2f | 1413 | } |
428870ff | 1414 | sdd->err = B_TRUE; |
34dc7c2f BB |
1415 | } |
1416 | ||
1417 | return (rv); | |
1418 | } | |
1419 | ||
1420 | static int | |
1421 | dump_filesystems(zfs_handle_t *rzhp, void *arg) | |
1422 | { | |
1423 | send_dump_data_t *sdd = arg; | |
1424 | nvpair_t *fspair; | |
1425 | boolean_t needagain, progress; | |
1426 | ||
1427 | if (!sdd->replicate) | |
1428 | return (dump_filesystem(rzhp, sdd)); | |
1429 | ||
428870ff BB |
1430 | /* Mark the clone origin snapshots. */ |
1431 | for (fspair = nvlist_next_nvpair(sdd->fss, NULL); fspair; | |
1432 | fspair = nvlist_next_nvpair(sdd->fss, fspair)) { | |
1433 | nvlist_t *nvfs; | |
1434 | uint64_t origin_guid = 0; | |
1435 | ||
1436 | VERIFY(0 == nvpair_value_nvlist(fspair, &nvfs)); | |
1437 | (void) nvlist_lookup_uint64(nvfs, "origin", &origin_guid); | |
1438 | if (origin_guid != 0) { | |
1439 | char *snapname; | |
1440 | nvlist_t *origin_nv = fsavl_find(sdd->fsavl, | |
1441 | origin_guid, &snapname); | |
1442 | if (origin_nv != NULL) { | |
1443 | nvlist_t *snapprops; | |
1444 | VERIFY(0 == nvlist_lookup_nvlist(origin_nv, | |
1445 | "snapprops", &snapprops)); | |
1446 | VERIFY(0 == nvlist_lookup_nvlist(snapprops, | |
1447 | snapname, &snapprops)); | |
1448 | VERIFY(0 == nvlist_add_boolean( | |
1449 | snapprops, "is_clone_origin")); | |
1450 | } | |
1451 | } | |
1452 | } | |
34dc7c2f BB |
1453 | again: |
1454 | needagain = progress = B_FALSE; | |
1455 | for (fspair = nvlist_next_nvpair(sdd->fss, NULL); fspair; | |
1456 | fspair = nvlist_next_nvpair(sdd->fss, fspair)) { | |
330d06f9 | 1457 | nvlist_t *fslist, *parent_nv; |
34dc7c2f BB |
1458 | char *fsname; |
1459 | zfs_handle_t *zhp; | |
1460 | int err; | |
1461 | uint64_t origin_guid = 0; | |
330d06f9 | 1462 | uint64_t parent_guid = 0; |
34dc7c2f BB |
1463 | |
1464 | VERIFY(nvpair_value_nvlist(fspair, &fslist) == 0); | |
1465 | if (nvlist_lookup_boolean(fslist, "sent") == 0) | |
1466 | continue; | |
1467 | ||
1468 | VERIFY(nvlist_lookup_string(fslist, "name", &fsname) == 0); | |
1469 | (void) nvlist_lookup_uint64(fslist, "origin", &origin_guid); | |
330d06f9 MA |
1470 | (void) nvlist_lookup_uint64(fslist, "parentfromsnap", |
1471 | &parent_guid); | |
1472 | ||
1473 | if (parent_guid != 0) { | |
1474 | parent_nv = fsavl_find(sdd->fsavl, parent_guid, NULL); | |
1475 | if (!nvlist_exists(parent_nv, "sent")) { | |
1476 | /* parent has not been sent; skip this one */ | |
1477 | needagain = B_TRUE; | |
1478 | continue; | |
1479 | } | |
1480 | } | |
34dc7c2f | 1481 | |
428870ff BB |
1482 | if (origin_guid != 0) { |
1483 | nvlist_t *origin_nv = fsavl_find(sdd->fsavl, | |
1484 | origin_guid, NULL); | |
1485 | if (origin_nv != NULL && | |
330d06f9 | 1486 | !nvlist_exists(origin_nv, "sent")) { |
428870ff BB |
1487 | /* |
1488 | * origin has not been sent yet; | |
1489 | * skip this clone. | |
1490 | */ | |
1491 | needagain = B_TRUE; | |
1492 | continue; | |
1493 | } | |
34dc7c2f BB |
1494 | } |
1495 | ||
1496 | zhp = zfs_open(rzhp->zfs_hdl, fsname, ZFS_TYPE_DATASET); | |
1497 | if (zhp == NULL) | |
1498 | return (-1); | |
1499 | err = dump_filesystem(zhp, sdd); | |
1500 | VERIFY(nvlist_add_boolean(fslist, "sent") == 0); | |
1501 | progress = B_TRUE; | |
1502 | zfs_close(zhp); | |
1503 | if (err) | |
1504 | return (err); | |
1505 | } | |
1506 | if (needagain) { | |
1507 | assert(progress); | |
1508 | goto again; | |
1509 | } | |
330d06f9 MA |
1510 | |
1511 | /* clean out the sent flags in case we reuse this fss */ | |
1512 | for (fspair = nvlist_next_nvpair(sdd->fss, NULL); fspair; | |
1513 | fspair = nvlist_next_nvpair(sdd->fss, fspair)) { | |
1514 | nvlist_t *fslist; | |
1515 | ||
1516 | VERIFY(nvpair_value_nvlist(fspair, &fslist) == 0); | |
1517 | (void) nvlist_remove_all(fslist, "sent"); | |
1518 | } | |
1519 | ||
34dc7c2f BB |
1520 | return (0); |
1521 | } | |
1522 | ||
cae5b340 AX |
1523 | nvlist_t * |
1524 | zfs_send_resume_token_to_nvlist(libzfs_handle_t *hdl, const char *token) | |
1525 | { | |
1526 | unsigned int version; | |
1527 | int nread, i; | |
1528 | unsigned long long checksum, packed_len; | |
1529 | ||
1530 | /* | |
1531 | * Decode token header, which is: | |
1532 | * <token version>-<checksum of payload>-<uncompressed payload length> | |
1533 | * Note that the only supported token version is 1. | |
1534 | */ | |
1535 | nread = sscanf(token, "%u-%llx-%llx-", | |
1536 | &version, &checksum, &packed_len); | |
1537 | if (nread != 3) { | |
1538 | zfs_error_aux(hdl, dgettext(TEXT_DOMAIN, | |
1539 | "resume token is corrupt (invalid format)")); | |
1540 | return (NULL); | |
1541 | } | |
1542 | ||
1543 | if (version != ZFS_SEND_RESUME_TOKEN_VERSION) { | |
1544 | zfs_error_aux(hdl, dgettext(TEXT_DOMAIN, | |
1545 | "resume token is corrupt (invalid version %u)"), | |
1546 | version); | |
1547 | return (NULL); | |
1548 | } | |
1549 | ||
1550 | /* convert hexadecimal representation to binary */ | |
1551 | token = strrchr(token, '-') + 1; | |
1552 | int len = strlen(token) / 2; | |
1553 | unsigned char *compressed = zfs_alloc(hdl, len); | |
1554 | for (i = 0; i < len; i++) { | |
1555 | nread = sscanf(token + i * 2, "%2hhx", compressed + i); | |
1556 | if (nread != 1) { | |
1557 | free(compressed); | |
1558 | zfs_error_aux(hdl, dgettext(TEXT_DOMAIN, | |
1559 | "resume token is corrupt " | |
1560 | "(payload is not hex-encoded)")); | |
1561 | return (NULL); | |
1562 | } | |
1563 | } | |
1564 | ||
1565 | /* verify checksum */ | |
1566 | zio_cksum_t cksum; | |
1567 | fletcher_4_native_varsize(compressed, len, &cksum); | |
1568 | if (cksum.zc_word[0] != checksum) { | |
1569 | free(compressed); | |
1570 | zfs_error_aux(hdl, dgettext(TEXT_DOMAIN, | |
1571 | "resume token is corrupt (incorrect checksum)")); | |
1572 | return (NULL); | |
1573 | } | |
1574 | ||
1575 | /* uncompress */ | |
1576 | void *packed = zfs_alloc(hdl, packed_len); | |
1577 | uLongf packed_len_long = packed_len; | |
1578 | if (uncompress(packed, &packed_len_long, compressed, len) != Z_OK || | |
1579 | packed_len_long != packed_len) { | |
1580 | free(packed); | |
1581 | free(compressed); | |
1582 | zfs_error_aux(hdl, dgettext(TEXT_DOMAIN, | |
1583 | "resume token is corrupt (decompression failed)")); | |
1584 | return (NULL); | |
1585 | } | |
1586 | ||
1587 | /* unpack nvlist */ | |
1588 | nvlist_t *nv; | |
1589 | int error = nvlist_unpack(packed, packed_len, &nv, KM_SLEEP); | |
1590 | free(packed); | |
1591 | free(compressed); | |
1592 | if (error != 0) { | |
1593 | zfs_error_aux(hdl, dgettext(TEXT_DOMAIN, | |
1594 | "resume token is corrupt (nvlist_unpack failed)")); | |
1595 | return (NULL); | |
1596 | } | |
1597 | return (nv); | |
1598 | } | |
1599 | ||
1600 | int | |
1601 | zfs_send_resume(libzfs_handle_t *hdl, sendflags_t *flags, int outfd, | |
1602 | const char *resume_token) | |
1603 | { | |
1604 | char errbuf[1024]; | |
1605 | char *toname; | |
1606 | char *fromname = NULL; | |
1607 | uint64_t resumeobj, resumeoff, toguid, fromguid, bytes; | |
1608 | zfs_handle_t *zhp; | |
1609 | int error = 0; | |
1610 | char name[ZFS_MAX_DATASET_NAME_LEN]; | |
1611 | enum lzc_send_flags lzc_flags = 0; | |
8ec27e97 | 1612 | FILE *fout = (flags->verbose && flags->dryrun) ? stdout : stderr; |
cae5b340 AX |
1613 | |
1614 | (void) snprintf(errbuf, sizeof (errbuf), dgettext(TEXT_DOMAIN, | |
1615 | "cannot resume send")); | |
1616 | ||
1617 | nvlist_t *resume_nvl = | |
1618 | zfs_send_resume_token_to_nvlist(hdl, resume_token); | |
1619 | if (resume_nvl == NULL) { | |
1620 | /* | |
1621 | * zfs_error_aux has already been set by | |
1622 | * zfs_send_resume_token_to_nvlist | |
1623 | */ | |
1624 | return (zfs_error(hdl, EZFS_FAULT, errbuf)); | |
1625 | } | |
1626 | if (flags->verbose) { | |
8ec27e97 | 1627 | (void) fprintf(fout, dgettext(TEXT_DOMAIN, |
cae5b340 | 1628 | "resume token contents:\n")); |
8ec27e97 | 1629 | nvlist_print(fout, resume_nvl); |
cae5b340 AX |
1630 | } |
1631 | ||
1632 | if (nvlist_lookup_string(resume_nvl, "toname", &toname) != 0 || | |
1633 | nvlist_lookup_uint64(resume_nvl, "object", &resumeobj) != 0 || | |
1634 | nvlist_lookup_uint64(resume_nvl, "offset", &resumeoff) != 0 || | |
1635 | nvlist_lookup_uint64(resume_nvl, "bytes", &bytes) != 0 || | |
1636 | nvlist_lookup_uint64(resume_nvl, "toguid", &toguid) != 0) { | |
1637 | zfs_error_aux(hdl, dgettext(TEXT_DOMAIN, | |
1638 | "resume token is corrupt")); | |
1639 | return (zfs_error(hdl, EZFS_FAULT, errbuf)); | |
1640 | } | |
1641 | fromguid = 0; | |
1642 | (void) nvlist_lookup_uint64(resume_nvl, "fromguid", &fromguid); | |
1643 | ||
1644 | if (flags->largeblock || nvlist_exists(resume_nvl, "largeblockok")) | |
1645 | lzc_flags |= LZC_SEND_FLAG_LARGE_BLOCK; | |
1646 | if (flags->embed_data || nvlist_exists(resume_nvl, "embedok")) | |
1647 | lzc_flags |= LZC_SEND_FLAG_EMBED_DATA; | |
1648 | if (flags->compress || nvlist_exists(resume_nvl, "compressok")) | |
1649 | lzc_flags |= LZC_SEND_FLAG_COMPRESS; | |
1650 | ||
1651 | if (guid_to_name(hdl, toname, toguid, B_FALSE, name) != 0) { | |
1652 | if (zfs_dataset_exists(hdl, toname, ZFS_TYPE_DATASET)) { | |
1653 | zfs_error_aux(hdl, dgettext(TEXT_DOMAIN, | |
1654 | "'%s' is no longer the same snapshot used in " | |
1655 | "the initial send"), toname); | |
1656 | } else { | |
1657 | zfs_error_aux(hdl, dgettext(TEXT_DOMAIN, | |
1658 | "'%s' used in the initial send no longer exists"), | |
1659 | toname); | |
1660 | } | |
1661 | return (zfs_error(hdl, EZFS_BADPATH, errbuf)); | |
1662 | } | |
1663 | zhp = zfs_open(hdl, name, ZFS_TYPE_DATASET); | |
1664 | if (zhp == NULL) { | |
1665 | zfs_error_aux(hdl, dgettext(TEXT_DOMAIN, | |
1666 | "unable to access '%s'"), name); | |
1667 | return (zfs_error(hdl, EZFS_BADPATH, errbuf)); | |
1668 | } | |
1669 | ||
1670 | if (fromguid != 0) { | |
1671 | if (guid_to_name(hdl, toname, fromguid, B_TRUE, name) != 0) { | |
1672 | zfs_error_aux(hdl, dgettext(TEXT_DOMAIN, | |
1673 | "incremental source %#llx no longer exists"), | |
1674 | (longlong_t)fromguid); | |
1675 | return (zfs_error(hdl, EZFS_BADPATH, errbuf)); | |
1676 | } | |
1677 | fromname = name; | |
1678 | } | |
1679 | ||
1680 | if (flags->verbose) { | |
1681 | uint64_t size = 0; | |
1682 | error = lzc_send_space(zhp->zfs_name, fromname, | |
1683 | lzc_flags, &size); | |
1684 | if (error == 0) | |
1685 | size = MAX(0, (int64_t)(size - bytes)); | |
8ec27e97 | 1686 | send_print_verbose(fout, zhp->zfs_name, fromname, |
cae5b340 AX |
1687 | size, flags->parsable); |
1688 | } | |
1689 | ||
1690 | if (!flags->dryrun) { | |
1691 | progress_arg_t pa = { 0 }; | |
1692 | pthread_t tid; | |
1693 | /* | |
1694 | * If progress reporting is requested, spawn a new thread to | |
1695 | * poll ZFS_IOC_SEND_PROGRESS at a regular interval. | |
1696 | */ | |
1697 | if (flags->progress) { | |
1698 | pa.pa_zhp = zhp; | |
1699 | pa.pa_fd = outfd; | |
1700 | pa.pa_parsable = flags->parsable; | |
1701 | ||
1702 | error = pthread_create(&tid, NULL, | |
1703 | send_progress_thread, &pa); | |
1704 | if (error != 0) { | |
1705 | zfs_close(zhp); | |
1706 | return (error); | |
1707 | } | |
1708 | } | |
1709 | ||
1710 | error = lzc_send_resume(zhp->zfs_name, fromname, outfd, | |
1711 | lzc_flags, resumeobj, resumeoff); | |
1712 | ||
1713 | if (flags->progress) { | |
1714 | (void) pthread_cancel(tid); | |
1715 | (void) pthread_join(tid, NULL); | |
1716 | } | |
1717 | ||
1718 | char errbuf[1024]; | |
1719 | (void) snprintf(errbuf, sizeof (errbuf), dgettext(TEXT_DOMAIN, | |
1720 | "warning: cannot send '%s'"), zhp->zfs_name); | |
1721 | ||
1722 | zfs_close(zhp); | |
1723 | ||
1724 | switch (error) { | |
1725 | case 0: | |
1726 | return (0); | |
1727 | case EXDEV: | |
1728 | case ENOENT: | |
1729 | case EDQUOT: | |
1730 | case EFBIG: | |
1731 | case EIO: | |
1732 | case ENOLINK: | |
1733 | case ENOSPC: | |
1734 | case ENOSTR: | |
1735 | case ENXIO: | |
1736 | case EPIPE: | |
1737 | case ERANGE: | |
1738 | case EFAULT: | |
1739 | case EROFS: | |
1740 | zfs_error_aux(hdl, strerror(errno)); | |
1741 | return (zfs_error(hdl, EZFS_BADBACKUP, errbuf)); | |
1742 | ||
1743 | default: | |
1744 | return (zfs_standard_error(hdl, errno, errbuf)); | |
1745 | } | |
1746 | } | |
1747 | ||
1748 | ||
1749 | zfs_close(zhp); | |
1750 | ||
1751 | return (error); | |
1752 | } | |
1753 | ||
34dc7c2f | 1754 | /* |
45d1cae3 BB |
1755 | * Generate a send stream for the dataset identified by the argument zhp. |
1756 | * | |
1757 | * The content of the send stream is the snapshot identified by | |
1758 | * 'tosnap'. Incremental streams are requested in two ways: | |
1759 | * - from the snapshot identified by "fromsnap" (if non-null) or | |
1760 | * - from the origin of the dataset identified by zhp, which must | |
1761 | * be a clone. In this case, "fromsnap" is null and "fromorigin" | |
1762 | * is TRUE. | |
1763 | * | |
1764 | * The send stream is recursive (i.e. dumps a hierarchy of snapshots) and | |
428870ff | 1765 | * uses a special header (with a hdrtype field of DMU_COMPOUNDSTREAM) |
45d1cae3 | 1766 | * if "replicate" is set. If "doall" is set, dump all the intermediate |
428870ff BB |
1767 | * snapshots. The DMU_COMPOUNDSTREAM header is used in the "doall" |
1768 | * case too. If "props" is set, send properties. | |
34dc7c2f BB |
1769 | */ |
1770 | int | |
1771 | zfs_send(zfs_handle_t *zhp, const char *fromsnap, const char *tosnap, | |
330d06f9 | 1772 | sendflags_t *flags, int outfd, snapfilter_cb_t filter_func, |
428870ff | 1773 | void *cb_arg, nvlist_t **debugnvp) |
34dc7c2f BB |
1774 | { |
1775 | char errbuf[1024]; | |
1776 | send_dump_data_t sdd = { 0 }; | |
330d06f9 | 1777 | int err = 0; |
34dc7c2f BB |
1778 | nvlist_t *fss = NULL; |
1779 | avl_tree_t *fsavl = NULL; | |
428870ff BB |
1780 | static uint64_t holdseq; |
1781 | int spa_version; | |
a08ee875 | 1782 | pthread_t tid = 0; |
428870ff BB |
1783 | int pipefd[2]; |
1784 | dedup_arg_t dda = { 0 }; | |
1785 | int featureflags = 0; | |
e10b0808 | 1786 | FILE *fout; |
428870ff | 1787 | |
34dc7c2f BB |
1788 | (void) snprintf(errbuf, sizeof (errbuf), dgettext(TEXT_DOMAIN, |
1789 | "cannot send '%s'"), zhp->zfs_name); | |
1790 | ||
1791 | if (fromsnap && fromsnap[0] == '\0') { | |
1792 | zfs_error_aux(zhp->zfs_hdl, dgettext(TEXT_DOMAIN, | |
1793 | "zero-length incremental source")); | |
1794 | return (zfs_error(zhp->zfs_hdl, EZFS_NOENT, errbuf)); | |
1795 | } | |
1796 | ||
572e2857 BB |
1797 | if (zhp->zfs_type == ZFS_TYPE_FILESYSTEM) { |
1798 | uint64_t version; | |
1799 | version = zfs_prop_get_int(zhp, ZFS_PROP_VERSION); | |
1800 | if (version >= ZPL_VERSION_SA) { | |
1801 | featureflags |= DMU_BACKUP_FEATURE_SA_SPILL; | |
1802 | } | |
1803 | } | |
1804 | ||
330d06f9 | 1805 | if (flags->dedup && !flags->dryrun) { |
428870ff BB |
1806 | featureflags |= (DMU_BACKUP_FEATURE_DEDUP | |
1807 | DMU_BACKUP_FEATURE_DEDUPPROPS); | |
cae5b340 | 1808 | if ((err = socketpair(AF_UNIX, SOCK_STREAM, 0, pipefd)) != 0) { |
428870ff BB |
1809 | zfs_error_aux(zhp->zfs_hdl, strerror(errno)); |
1810 | return (zfs_error(zhp->zfs_hdl, EZFS_PIPEFAILED, | |
1811 | errbuf)); | |
1812 | } | |
1813 | dda.outputfd = outfd; | |
1814 | dda.inputfd = pipefd[1]; | |
1815 | dda.dedup_hdl = zhp->zfs_hdl; | |
cae5b340 | 1816 | if ((err = pthread_create(&tid, NULL, cksummer, &dda)) != 0) { |
428870ff BB |
1817 | (void) close(pipefd[0]); |
1818 | (void) close(pipefd[1]); | |
1819 | zfs_error_aux(zhp->zfs_hdl, strerror(errno)); | |
1820 | return (zfs_error(zhp->zfs_hdl, | |
1821 | EZFS_THREADCREATEFAILED, errbuf)); | |
1822 | } | |
1823 | } | |
1824 | ||
330d06f9 | 1825 | if (flags->replicate || flags->doall || flags->props) { |
34dc7c2f BB |
1826 | dmu_replay_record_t drr = { 0 }; |
1827 | char *packbuf = NULL; | |
1828 | size_t buflen = 0; | |
cae5b340 AX |
1829 | zio_cksum_t zc; |
1830 | ||
1831 | ZIO_SET_CHECKSUM(&zc, 0, 0, 0, 0); | |
34dc7c2f | 1832 | |
330d06f9 | 1833 | if (flags->replicate || flags->props) { |
34dc7c2f BB |
1834 | nvlist_t *hdrnv; |
1835 | ||
1836 | VERIFY(0 == nvlist_alloc(&hdrnv, NV_UNIQUE_NAME, 0)); | |
1837 | if (fromsnap) { | |
1838 | VERIFY(0 == nvlist_add_string(hdrnv, | |
1839 | "fromsnap", fromsnap)); | |
1840 | } | |
1841 | VERIFY(0 == nvlist_add_string(hdrnv, "tosnap", tosnap)); | |
330d06f9 | 1842 | if (!flags->replicate) { |
428870ff BB |
1843 | VERIFY(0 == nvlist_add_boolean(hdrnv, |
1844 | "not_recursive")); | |
1845 | } | |
34dc7c2f BB |
1846 | |
1847 | err = gather_nvlist(zhp->zfs_hdl, zhp->zfs_name, | |
cae5b340 AX |
1848 | fromsnap, tosnap, flags->replicate, flags->verbose, |
1849 | &fss, &fsavl); | |
572e2857 | 1850 | if (err) |
428870ff | 1851 | goto err_out; |
34dc7c2f BB |
1852 | VERIFY(0 == nvlist_add_nvlist(hdrnv, "fss", fss)); |
1853 | err = nvlist_pack(hdrnv, &packbuf, &buflen, | |
1854 | NV_ENCODE_XDR, 0); | |
428870ff BB |
1855 | if (debugnvp) |
1856 | *debugnvp = hdrnv; | |
1857 | else | |
1858 | nvlist_free(hdrnv); | |
a08ee875 | 1859 | if (err) |
428870ff | 1860 | goto stderr_out; |
34dc7c2f BB |
1861 | } |
1862 | ||
330d06f9 MA |
1863 | if (!flags->dryrun) { |
1864 | /* write first begin record */ | |
1865 | drr.drr_type = DRR_BEGIN; | |
1866 | drr.drr_u.drr_begin.drr_magic = DMU_BACKUP_MAGIC; | |
1867 | DMU_SET_STREAM_HDRTYPE(drr.drr_u.drr_begin. | |
1868 | drr_versioninfo, DMU_COMPOUNDSTREAM); | |
1869 | DMU_SET_FEATUREFLAGS(drr.drr_u.drr_begin. | |
1870 | drr_versioninfo, featureflags); | |
cae5b340 | 1871 | if (snprintf(drr.drr_u.drr_begin.drr_toname, |
330d06f9 | 1872 | sizeof (drr.drr_u.drr_begin.drr_toname), |
cae5b340 AX |
1873 | "%s@%s", zhp->zfs_name, tosnap) >= |
1874 | sizeof (drr.drr_u.drr_begin.drr_toname)) { | |
1875 | err = EINVAL; | |
1876 | goto stderr_out; | |
1877 | } | |
330d06f9 | 1878 | drr.drr_payloadlen = buflen; |
330d06f9 | 1879 | |
cae5b340 | 1880 | err = dump_record(&drr, packbuf, buflen, &zc, outfd); |
330d06f9 | 1881 | free(packbuf); |
cae5b340 | 1882 | if (err != 0) |
330d06f9 | 1883 | goto stderr_out; |
34dc7c2f | 1884 | |
330d06f9 | 1885 | /* write end record */ |
34dc7c2f BB |
1886 | bzero(&drr, sizeof (drr)); |
1887 | drr.drr_type = DRR_END; | |
1888 | drr.drr_u.drr_end.drr_checksum = zc; | |
1889 | err = write(outfd, &drr, sizeof (drr)); | |
1890 | if (err == -1) { | |
428870ff | 1891 | err = errno; |
428870ff | 1892 | goto stderr_out; |
34dc7c2f | 1893 | } |
330d06f9 MA |
1894 | |
1895 | err = 0; | |
34dc7c2f BB |
1896 | } |
1897 | } | |
1898 | ||
1899 | /* dump each stream */ | |
1900 | sdd.fromsnap = fromsnap; | |
1901 | sdd.tosnap = tosnap; | |
a08ee875 | 1902 | if (tid != 0) |
428870ff BB |
1903 | sdd.outfd = pipefd[0]; |
1904 | else | |
1905 | sdd.outfd = outfd; | |
330d06f9 MA |
1906 | sdd.replicate = flags->replicate; |
1907 | sdd.doall = flags->doall; | |
1908 | sdd.fromorigin = flags->fromorigin; | |
34dc7c2f BB |
1909 | sdd.fss = fss; |
1910 | sdd.fsavl = fsavl; | |
330d06f9 MA |
1911 | sdd.verbose = flags->verbose; |
1912 | sdd.parsable = flags->parsable; | |
37abac6d | 1913 | sdd.progress = flags->progress; |
330d06f9 | 1914 | sdd.dryrun = flags->dryrun; |
e10b0808 | 1915 | sdd.large_block = flags->largeblock; |
ea04106b | 1916 | sdd.embed_data = flags->embed_data; |
cae5b340 | 1917 | sdd.compress = flags->compress; |
428870ff BB |
1918 | sdd.filter_cb = filter_func; |
1919 | sdd.filter_cb_arg = cb_arg; | |
1920 | if (debugnvp) | |
1921 | sdd.debugnv = *debugnvp; | |
e10b0808 AX |
1922 | if (sdd.verbose && sdd.dryrun) |
1923 | sdd.std_out = B_TRUE; | |
1924 | fout = sdd.std_out ? stdout : stderr; | |
e956d651 CS |
1925 | |
1926 | /* | |
1927 | * Some flags require that we place user holds on the datasets that are | |
1928 | * being sent so they don't get destroyed during the send. We can skip | |
1929 | * this step if the pool is imported read-only since the datasets cannot | |
1930 | * be destroyed. | |
1931 | */ | |
1932 | if (!flags->dryrun && !zpool_get_prop_int(zfs_get_pool_handle(zhp), | |
1933 | ZPOOL_PROP_READONLY, NULL) && | |
1934 | zfs_spa_version(zhp, &spa_version) == 0 && | |
1935 | spa_version >= SPA_VERSION_USERREFS && | |
1936 | (flags->doall || flags->replicate)) { | |
572e2857 BB |
1937 | ++holdseq; |
1938 | (void) snprintf(sdd.holdtag, sizeof (sdd.holdtag), | |
1939 | ".send-%d-%llu", getpid(), (u_longlong_t)holdseq); | |
325f0235 | 1940 | sdd.cleanup_fd = open(ZFS_DEV, O_RDWR); |
572e2857 BB |
1941 | if (sdd.cleanup_fd < 0) { |
1942 | err = errno; | |
1943 | goto stderr_out; | |
1944 | } | |
a08ee875 | 1945 | sdd.snapholds = fnvlist_alloc(); |
572e2857 BB |
1946 | } else { |
1947 | sdd.cleanup_fd = -1; | |
a08ee875 | 1948 | sdd.snapholds = NULL; |
572e2857 | 1949 | } |
a08ee875 | 1950 | if (flags->verbose || sdd.snapholds != NULL) { |
330d06f9 MA |
1951 | /* |
1952 | * Do a verbose no-op dry run to get all the verbose output | |
a08ee875 LG |
1953 | * or to gather snapshot hold's before generating any data, |
1954 | * then do a non-verbose real run to generate the streams. | |
330d06f9 MA |
1955 | */ |
1956 | sdd.dryrun = B_TRUE; | |
1957 | err = dump_filesystems(zhp, &sdd); | |
a08ee875 LG |
1958 | |
1959 | if (err != 0) | |
1960 | goto stderr_out; | |
1961 | ||
1962 | if (flags->verbose) { | |
1963 | if (flags->parsable) { | |
e10b0808 | 1964 | (void) fprintf(fout, "size\t%llu\n", |
a08ee875 LG |
1965 | (longlong_t)sdd.size); |
1966 | } else { | |
1967 | char buf[16]; | |
cae5b340 | 1968 | zfs_nicebytes(sdd.size, buf, sizeof (buf)); |
e10b0808 | 1969 | (void) fprintf(fout, dgettext(TEXT_DOMAIN, |
a08ee875 LG |
1970 | "total estimated size is %s\n"), buf); |
1971 | } | |
1972 | } | |
1973 | ||
1974 | /* Ensure no snaps found is treated as an error. */ | |
1975 | if (!sdd.seento) { | |
1976 | err = ENOENT; | |
1977 | goto err_out; | |
1978 | } | |
1979 | ||
1980 | /* Skip the second run if dryrun was requested. */ | |
1981 | if (flags->dryrun) | |
1982 | goto err_out; | |
1983 | ||
1984 | if (sdd.snapholds != NULL) { | |
1985 | err = zfs_hold_nvl(zhp, sdd.cleanup_fd, sdd.snapholds); | |
1986 | if (err != 0) | |
1987 | goto stderr_out; | |
1988 | ||
1989 | fnvlist_free(sdd.snapholds); | |
1990 | sdd.snapholds = NULL; | |
330d06f9 | 1991 | } |
a08ee875 LG |
1992 | |
1993 | sdd.dryrun = B_FALSE; | |
1994 | sdd.verbose = B_FALSE; | |
330d06f9 | 1995 | } |
a08ee875 | 1996 | |
34dc7c2f BB |
1997 | err = dump_filesystems(zhp, &sdd); |
1998 | fsavl_destroy(fsavl); | |
1999 | nvlist_free(fss); | |
2000 | ||
a08ee875 LG |
2001 | /* Ensure no snaps found is treated as an error. */ |
2002 | if (err == 0 && !sdd.seento) | |
2003 | err = ENOENT; | |
2004 | ||
2005 | if (tid != 0) { | |
2006 | if (err != 0) | |
2007 | (void) pthread_cancel(tid); | |
428870ff BB |
2008 | (void) close(pipefd[0]); |
2009 | (void) pthread_join(tid, NULL); | |
2010 | } | |
2011 | ||
572e2857 BB |
2012 | if (sdd.cleanup_fd != -1) { |
2013 | VERIFY(0 == close(sdd.cleanup_fd)); | |
2014 | sdd.cleanup_fd = -1; | |
2015 | } | |
2016 | ||
330d06f9 MA |
2017 | if (!flags->dryrun && (flags->replicate || flags->doall || |
2018 | flags->props)) { | |
34dc7c2f BB |
2019 | /* |
2020 | * write final end record. NB: want to do this even if | |
2021 | * there was some error, because it might not be totally | |
2022 | * failed. | |
2023 | */ | |
2024 | dmu_replay_record_t drr = { 0 }; | |
2025 | drr.drr_type = DRR_END; | |
2026 | if (write(outfd, &drr, sizeof (drr)) == -1) { | |
2027 | return (zfs_standard_error(zhp->zfs_hdl, | |
2028 | errno, errbuf)); | |
2029 | } | |
2030 | } | |
2031 | ||
2032 | return (err || sdd.err); | |
428870ff BB |
2033 | |
2034 | stderr_out: | |
2035 | err = zfs_standard_error(zhp->zfs_hdl, err, errbuf); | |
2036 | err_out: | |
a08ee875 LG |
2037 | fsavl_destroy(fsavl); |
2038 | nvlist_free(fss); | |
2039 | fnvlist_free(sdd.snapholds); | |
2040 | ||
572e2857 BB |
2041 | if (sdd.cleanup_fd != -1) |
2042 | VERIFY(0 == close(sdd.cleanup_fd)); | |
a08ee875 | 2043 | if (tid != 0) { |
428870ff | 2044 | (void) pthread_cancel(tid); |
428870ff | 2045 | (void) close(pipefd[0]); |
a08ee875 | 2046 | (void) pthread_join(tid, NULL); |
428870ff BB |
2047 | } |
2048 | return (err); | |
34dc7c2f BB |
2049 | } |
2050 | ||
ea04106b AX |
2051 | int |
2052 | zfs_send_one(zfs_handle_t *zhp, const char *from, int fd, | |
2053 | enum lzc_send_flags flags) | |
2054 | { | |
2055 | int err; | |
2056 | libzfs_handle_t *hdl = zhp->zfs_hdl; | |
2057 | ||
2058 | char errbuf[1024]; | |
2059 | (void) snprintf(errbuf, sizeof (errbuf), dgettext(TEXT_DOMAIN, | |
2060 | "warning: cannot send '%s'"), zhp->zfs_name); | |
2061 | ||
2062 | err = lzc_send(zhp->zfs_name, from, fd, flags); | |
2063 | if (err != 0) { | |
2064 | switch (errno) { | |
2065 | case EXDEV: | |
2066 | zfs_error_aux(hdl, dgettext(TEXT_DOMAIN, | |
2067 | "not an earlier snapshot from the same fs")); | |
2068 | return (zfs_error(hdl, EZFS_CROSSTARGET, errbuf)); | |
2069 | ||
2070 | case ENOENT: | |
2071 | case ESRCH: | |
2072 | if (lzc_exists(zhp->zfs_name)) { | |
2073 | zfs_error_aux(hdl, dgettext(TEXT_DOMAIN, | |
2074 | "incremental source (%s) does not exist"), | |
2075 | from); | |
2076 | } | |
2077 | return (zfs_error(hdl, EZFS_NOENT, errbuf)); | |
2078 | ||
2079 | case EBUSY: | |
2080 | zfs_error_aux(hdl, dgettext(TEXT_DOMAIN, | |
2081 | "target is busy; if a filesystem, " | |
2082 | "it must not be mounted")); | |
2083 | return (zfs_error(hdl, EZFS_BUSY, errbuf)); | |
2084 | ||
2085 | case EDQUOT: | |
2086 | case EFBIG: | |
2087 | case EIO: | |
2088 | case ENOLINK: | |
2089 | case ENOSPC: | |
2090 | case ENOSTR: | |
2091 | case ENXIO: | |
2092 | case EPIPE: | |
2093 | case ERANGE: | |
2094 | case EFAULT: | |
2095 | case EROFS: | |
2096 | zfs_error_aux(hdl, strerror(errno)); | |
2097 | return (zfs_error(hdl, EZFS_BADBACKUP, errbuf)); | |
2098 | ||
2099 | default: | |
2100 | return (zfs_standard_error(hdl, errno, errbuf)); | |
2101 | } | |
2102 | } | |
2103 | return (err != 0); | |
2104 | } | |
2105 | ||
34dc7c2f BB |
2106 | /* |
2107 | * Routines specific to "zfs recv" | |
2108 | */ | |
2109 | ||
2110 | static int | |
2111 | recv_read(libzfs_handle_t *hdl, int fd, void *buf, int ilen, | |
2112 | boolean_t byteswap, zio_cksum_t *zc) | |
2113 | { | |
2114 | char *cp = buf; | |
2115 | int rv; | |
2116 | int len = ilen; | |
2117 | ||
cae5b340 AX |
2118 | assert(ilen <= SPA_MAXBLOCKSIZE); |
2119 | ||
34dc7c2f BB |
2120 | do { |
2121 | rv = read(fd, cp, len); | |
2122 | cp += rv; | |
2123 | len -= rv; | |
2124 | } while (rv > 0); | |
2125 | ||
2126 | if (rv < 0 || len != 0) { | |
2127 | zfs_error_aux(hdl, dgettext(TEXT_DOMAIN, | |
2128 | "failed to read from stream")); | |
2129 | return (zfs_error(hdl, EZFS_BADSTREAM, dgettext(TEXT_DOMAIN, | |
2130 | "cannot receive"))); | |
2131 | } | |
2132 | ||
2133 | if (zc) { | |
2134 | if (byteswap) | |
2135 | fletcher_4_incremental_byteswap(buf, ilen, zc); | |
2136 | else | |
2137 | fletcher_4_incremental_native(buf, ilen, zc); | |
2138 | } | |
2139 | return (0); | |
2140 | } | |
2141 | ||
2142 | static int | |
2143 | recv_read_nvlist(libzfs_handle_t *hdl, int fd, int len, nvlist_t **nvp, | |
2144 | boolean_t byteswap, zio_cksum_t *zc) | |
2145 | { | |
2146 | char *buf; | |
2147 | int err; | |
2148 | ||
2149 | buf = zfs_alloc(hdl, len); | |
2150 | if (buf == NULL) | |
2151 | return (ENOMEM); | |
2152 | ||
2153 | err = recv_read(hdl, fd, buf, len, byteswap, zc); | |
2154 | if (err != 0) { | |
2155 | free(buf); | |
2156 | return (err); | |
2157 | } | |
2158 | ||
2159 | err = nvlist_unpack(buf, len, nvp, 0); | |
2160 | free(buf); | |
2161 | if (err != 0) { | |
2162 | zfs_error_aux(hdl, dgettext(TEXT_DOMAIN, "invalid " | |
2163 | "stream (malformed nvlist)")); | |
2164 | return (EINVAL); | |
2165 | } | |
2166 | return (0); | |
2167 | } | |
2168 | ||
2169 | static int | |
2170 | recv_rename(libzfs_handle_t *hdl, const char *name, const char *tryname, | |
330d06f9 | 2171 | int baselen, char *newname, recvflags_t *flags) |
34dc7c2f BB |
2172 | { |
2173 | static int seq; | |
a08ee875 | 2174 | zfs_cmd_t zc = {"\0"}; |
34dc7c2f BB |
2175 | int err; |
2176 | prop_changelist_t *clp; | |
2177 | zfs_handle_t *zhp; | |
2178 | ||
2179 | zhp = zfs_open(hdl, name, ZFS_TYPE_DATASET); | |
2180 | if (zhp == NULL) | |
2181 | return (-1); | |
b128c09f | 2182 | clp = changelist_gather(zhp, ZFS_PROP_NAME, 0, |
330d06f9 | 2183 | flags->force ? MS_FORCE : 0); |
34dc7c2f BB |
2184 | zfs_close(zhp); |
2185 | if (clp == NULL) | |
2186 | return (-1); | |
2187 | err = changelist_prefix(clp); | |
2188 | if (err) | |
2189 | return (err); | |
2190 | ||
45d1cae3 BB |
2191 | zc.zc_objset_type = DMU_OST_ZFS; |
2192 | (void) strlcpy(zc.zc_name, name, sizeof (zc.zc_name)); | |
2193 | ||
34dc7c2f BB |
2194 | if (tryname) { |
2195 | (void) strcpy(newname, tryname); | |
2196 | ||
34dc7c2f BB |
2197 | (void) strlcpy(zc.zc_value, tryname, sizeof (zc.zc_value)); |
2198 | ||
330d06f9 | 2199 | if (flags->verbose) { |
34dc7c2f BB |
2200 | (void) printf("attempting rename %s to %s\n", |
2201 | zc.zc_name, zc.zc_value); | |
2202 | } | |
2203 | err = ioctl(hdl->libzfs_fd, ZFS_IOC_RENAME, &zc); | |
2204 | if (err == 0) | |
2205 | changelist_rename(clp, name, tryname); | |
2206 | } else { | |
2207 | err = ENOENT; | |
2208 | } | |
2209 | ||
a08ee875 | 2210 | if (err != 0 && strncmp(name + baselen, "recv-", 5) != 0) { |
34dc7c2f BB |
2211 | seq++; |
2212 | ||
cae5b340 AX |
2213 | (void) snprintf(newname, ZFS_MAX_DATASET_NAME_LEN, |
2214 | "%.*srecv-%u-%u", baselen, name, getpid(), seq); | |
34dc7c2f BB |
2215 | (void) strlcpy(zc.zc_value, newname, sizeof (zc.zc_value)); |
2216 | ||
330d06f9 | 2217 | if (flags->verbose) { |
34dc7c2f BB |
2218 | (void) printf("failed - trying rename %s to %s\n", |
2219 | zc.zc_name, zc.zc_value); | |
2220 | } | |
2221 | err = ioctl(hdl->libzfs_fd, ZFS_IOC_RENAME, &zc); | |
2222 | if (err == 0) | |
2223 | changelist_rename(clp, name, newname); | |
330d06f9 | 2224 | if (err && flags->verbose) { |
34dc7c2f BB |
2225 | (void) printf("failed (%u) - " |
2226 | "will try again on next pass\n", errno); | |
2227 | } | |
2228 | err = EAGAIN; | |
330d06f9 | 2229 | } else if (flags->verbose) { |
34dc7c2f BB |
2230 | if (err == 0) |
2231 | (void) printf("success\n"); | |
2232 | else | |
2233 | (void) printf("failed (%u)\n", errno); | |
2234 | } | |
2235 | ||
2236 | (void) changelist_postfix(clp); | |
2237 | changelist_free(clp); | |
2238 | ||
2239 | return (err); | |
2240 | } | |
2241 | ||
2242 | static int | |
2243 | recv_destroy(libzfs_handle_t *hdl, const char *name, int baselen, | |
330d06f9 | 2244 | char *newname, recvflags_t *flags) |
34dc7c2f | 2245 | { |
a08ee875 | 2246 | zfs_cmd_t zc = {"\0"}; |
34dc7c2f BB |
2247 | int err = 0; |
2248 | prop_changelist_t *clp; | |
2249 | zfs_handle_t *zhp; | |
45d1cae3 BB |
2250 | boolean_t defer = B_FALSE; |
2251 | int spa_version; | |
34dc7c2f BB |
2252 | |
2253 | zhp = zfs_open(hdl, name, ZFS_TYPE_DATASET); | |
2254 | if (zhp == NULL) | |
2255 | return (-1); | |
b128c09f | 2256 | clp = changelist_gather(zhp, ZFS_PROP_NAME, 0, |
330d06f9 | 2257 | flags->force ? MS_FORCE : 0); |
45d1cae3 BB |
2258 | if (zfs_get_type(zhp) == ZFS_TYPE_SNAPSHOT && |
2259 | zfs_spa_version(zhp, &spa_version) == 0 && | |
2260 | spa_version >= SPA_VERSION_USERREFS) | |
2261 | defer = B_TRUE; | |
34dc7c2f BB |
2262 | zfs_close(zhp); |
2263 | if (clp == NULL) | |
2264 | return (-1); | |
2265 | err = changelist_prefix(clp); | |
2266 | if (err) | |
2267 | return (err); | |
2268 | ||
2269 | zc.zc_objset_type = DMU_OST_ZFS; | |
45d1cae3 | 2270 | zc.zc_defer_destroy = defer; |
34dc7c2f BB |
2271 | (void) strlcpy(zc.zc_name, name, sizeof (zc.zc_name)); |
2272 | ||
330d06f9 | 2273 | if (flags->verbose) |
34dc7c2f BB |
2274 | (void) printf("attempting destroy %s\n", zc.zc_name); |
2275 | err = ioctl(hdl->libzfs_fd, ZFS_IOC_DESTROY, &zc); | |
34dc7c2f | 2276 | if (err == 0) { |
330d06f9 | 2277 | if (flags->verbose) |
34dc7c2f BB |
2278 | (void) printf("success\n"); |
2279 | changelist_remove(clp, zc.zc_name); | |
2280 | } | |
2281 | ||
2282 | (void) changelist_postfix(clp); | |
2283 | changelist_free(clp); | |
2284 | ||
45d1cae3 | 2285 | /* |
428870ff BB |
2286 | * Deferred destroy might destroy the snapshot or only mark it to be |
2287 | * destroyed later, and it returns success in either case. | |
45d1cae3 | 2288 | */ |
428870ff BB |
2289 | if (err != 0 || (defer && zfs_dataset_exists(hdl, name, |
2290 | ZFS_TYPE_SNAPSHOT))) { | |
34dc7c2f | 2291 | err = recv_rename(hdl, name, NULL, baselen, newname, flags); |
428870ff | 2292 | } |
34dc7c2f BB |
2293 | |
2294 | return (err); | |
2295 | } | |
2296 | ||
2297 | typedef struct guid_to_name_data { | |
2298 | uint64_t guid; | |
cae5b340 | 2299 | boolean_t bookmark_ok; |
34dc7c2f | 2300 | char *name; |
330d06f9 | 2301 | char *skip; |
34dc7c2f BB |
2302 | } guid_to_name_data_t; |
2303 | ||
2304 | static int | |
2305 | guid_to_name_cb(zfs_handle_t *zhp, void *arg) | |
2306 | { | |
2307 | guid_to_name_data_t *gtnd = arg; | |
cae5b340 | 2308 | const char *slash; |
34dc7c2f BB |
2309 | int err; |
2310 | ||
330d06f9 | 2311 | if (gtnd->skip != NULL && |
cae5b340 AX |
2312 | (slash = strrchr(zhp->zfs_name, '/')) != NULL && |
2313 | strcmp(slash + 1, gtnd->skip) == 0) { | |
2314 | zfs_close(zhp); | |
330d06f9 MA |
2315 | return (0); |
2316 | } | |
2317 | ||
cae5b340 | 2318 | if (zfs_prop_get_int(zhp, ZFS_PROP_GUID) == gtnd->guid) { |
34dc7c2f | 2319 | (void) strcpy(gtnd->name, zhp->zfs_name); |
428870ff | 2320 | zfs_close(zhp); |
34dc7c2f BB |
2321 | return (EEXIST); |
2322 | } | |
330d06f9 | 2323 | |
34dc7c2f | 2324 | err = zfs_iter_children(zhp, guid_to_name_cb, gtnd); |
cae5b340 AX |
2325 | if (err != EEXIST && gtnd->bookmark_ok) |
2326 | err = zfs_iter_bookmarks(zhp, guid_to_name_cb, gtnd); | |
34dc7c2f BB |
2327 | zfs_close(zhp); |
2328 | return (err); | |
2329 | } | |
2330 | ||
330d06f9 MA |
2331 | /* |
2332 | * Attempt to find the local dataset associated with this guid. In the case of | |
2333 | * multiple matches, we attempt to find the "best" match by searching | |
2334 | * progressively larger portions of the hierarchy. This allows one to send a | |
2335 | * tree of datasets individually and guarantee that we will find the source | |
2336 | * guid within that hierarchy, even if there are multiple matches elsewhere. | |
2337 | */ | |
34dc7c2f BB |
2338 | static int |
2339 | guid_to_name(libzfs_handle_t *hdl, const char *parent, uint64_t guid, | |
cae5b340 | 2340 | boolean_t bookmark_ok, char *name) |
34dc7c2f | 2341 | { |
cae5b340 | 2342 | char pname[ZFS_MAX_DATASET_NAME_LEN]; |
34dc7c2f | 2343 | guid_to_name_data_t gtnd; |
34dc7c2f BB |
2344 | |
2345 | gtnd.guid = guid; | |
cae5b340 | 2346 | gtnd.bookmark_ok = bookmark_ok; |
34dc7c2f | 2347 | gtnd.name = name; |
330d06f9 | 2348 | gtnd.skip = NULL; |
34dc7c2f | 2349 | |
330d06f9 | 2350 | /* |
cae5b340 AX |
2351 | * Search progressively larger portions of the hierarchy, starting |
2352 | * with the filesystem specified by 'parent'. This will | |
330d06f9 MA |
2353 | * select the "most local" version of the origin snapshot in the case |
2354 | * that there are multiple matching snapshots in the system. | |
2355 | */ | |
cae5b340 AX |
2356 | (void) strlcpy(pname, parent, sizeof (pname)); |
2357 | char *cp = strrchr(pname, '@'); | |
2358 | if (cp == NULL) | |
2359 | cp = strchr(pname, '\0'); | |
2360 | for (; cp != NULL; cp = strrchr(pname, '/')) { | |
330d06f9 | 2361 | /* Chop off the last component and open the parent */ |
34dc7c2f | 2362 | *cp = '\0'; |
cae5b340 | 2363 | zfs_handle_t *zhp = make_dataset_handle(hdl, pname); |
330d06f9 MA |
2364 | |
2365 | if (zhp == NULL) | |
2366 | continue; | |
cae5b340 AX |
2367 | int err = guid_to_name_cb(zfs_handle_dup(zhp), >nd); |
2368 | if (err != EEXIST) | |
2369 | err = zfs_iter_children(zhp, guid_to_name_cb, >nd); | |
2370 | if (err != EEXIST && bookmark_ok) | |
2371 | err = zfs_iter_bookmarks(zhp, guid_to_name_cb, >nd); | |
34dc7c2f | 2372 | zfs_close(zhp); |
330d06f9 MA |
2373 | if (err == EEXIST) |
2374 | return (0); | |
34dc7c2f | 2375 | |
330d06f9 | 2376 | /* |
cae5b340 AX |
2377 | * Remember the last portion of the dataset so we skip it next |
2378 | * time through (as we've already searched that portion of the | |
2379 | * hierarchy). | |
330d06f9 | 2380 | */ |
cae5b340 | 2381 | gtnd.skip = strrchr(pname, '/') + 1; |
330d06f9 | 2382 | } |
34dc7c2f | 2383 | |
330d06f9 | 2384 | return (ENOENT); |
34dc7c2f BB |
2385 | } |
2386 | ||
2387 | /* | |
330d06f9 MA |
2388 | * Return +1 if guid1 is before guid2, 0 if they are the same, and -1 if |
2389 | * guid1 is after guid2. | |
34dc7c2f BB |
2390 | */ |
2391 | static int | |
2392 | created_before(libzfs_handle_t *hdl, avl_tree_t *avl, | |
2393 | uint64_t guid1, uint64_t guid2) | |
2394 | { | |
2395 | nvlist_t *nvfs; | |
4d815aed | 2396 | char *fsname = NULL, *snapname = NULL; |
cae5b340 | 2397 | char buf[ZFS_MAX_DATASET_NAME_LEN]; |
34dc7c2f | 2398 | int rv; |
330d06f9 MA |
2399 | zfs_handle_t *guid1hdl, *guid2hdl; |
2400 | uint64_t create1, create2; | |
34dc7c2f BB |
2401 | |
2402 | if (guid2 == 0) | |
2403 | return (0); | |
2404 | if (guid1 == 0) | |
2405 | return (1); | |
2406 | ||
2407 | nvfs = fsavl_find(avl, guid1, &snapname); | |
2408 | VERIFY(0 == nvlist_lookup_string(nvfs, "name", &fsname)); | |
2409 | (void) snprintf(buf, sizeof (buf), "%s@%s", fsname, snapname); | |
330d06f9 MA |
2410 | guid1hdl = zfs_open(hdl, buf, ZFS_TYPE_SNAPSHOT); |
2411 | if (guid1hdl == NULL) | |
34dc7c2f BB |
2412 | return (-1); |
2413 | ||
2414 | nvfs = fsavl_find(avl, guid2, &snapname); | |
2415 | VERIFY(0 == nvlist_lookup_string(nvfs, "name", &fsname)); | |
2416 | (void) snprintf(buf, sizeof (buf), "%s@%s", fsname, snapname); | |
330d06f9 MA |
2417 | guid2hdl = zfs_open(hdl, buf, ZFS_TYPE_SNAPSHOT); |
2418 | if (guid2hdl == NULL) { | |
2419 | zfs_close(guid1hdl); | |
34dc7c2f BB |
2420 | return (-1); |
2421 | } | |
2422 | ||
330d06f9 MA |
2423 | create1 = zfs_prop_get_int(guid1hdl, ZFS_PROP_CREATETXG); |
2424 | create2 = zfs_prop_get_int(guid2hdl, ZFS_PROP_CREATETXG); | |
34dc7c2f | 2425 | |
330d06f9 MA |
2426 | if (create1 < create2) |
2427 | rv = -1; | |
2428 | else if (create1 > create2) | |
2429 | rv = +1; | |
2430 | else | |
2431 | rv = 0; | |
2432 | ||
2433 | zfs_close(guid1hdl); | |
2434 | zfs_close(guid2hdl); | |
34dc7c2f BB |
2435 | |
2436 | return (rv); | |
2437 | } | |
2438 | ||
2439 | static int | |
2440 | recv_incremental_replication(libzfs_handle_t *hdl, const char *tofs, | |
330d06f9 | 2441 | recvflags_t *flags, nvlist_t *stream_nv, avl_tree_t *stream_avl, |
428870ff | 2442 | nvlist_t *renamed) |
34dc7c2f | 2443 | { |
ea04106b | 2444 | nvlist_t *local_nv, *deleted = NULL; |
34dc7c2f BB |
2445 | avl_tree_t *local_avl; |
2446 | nvpair_t *fselem, *nextfselem; | |
428870ff | 2447 | char *fromsnap; |
cae5b340 | 2448 | char newname[ZFS_MAX_DATASET_NAME_LEN]; |
ea04106b | 2449 | char guidname[32]; |
34dc7c2f | 2450 | int error; |
428870ff BB |
2451 | boolean_t needagain, progress, recursive; |
2452 | char *s1, *s2; | |
34dc7c2f BB |
2453 | |
2454 | VERIFY(0 == nvlist_lookup_string(stream_nv, "fromsnap", &fromsnap)); | |
428870ff BB |
2455 | |
2456 | recursive = (nvlist_lookup_boolean(stream_nv, "not_recursive") == | |
2457 | ENOENT); | |
34dc7c2f | 2458 | |
330d06f9 | 2459 | if (flags->dryrun) |
34dc7c2f BB |
2460 | return (0); |
2461 | ||
2462 | again: | |
2463 | needagain = progress = B_FALSE; | |
2464 | ||
ea04106b AX |
2465 | VERIFY(0 == nvlist_alloc(&deleted, NV_UNIQUE_NAME, 0)); |
2466 | ||
34dc7c2f | 2467 | if ((error = gather_nvlist(hdl, tofs, fromsnap, NULL, |
cae5b340 | 2468 | recursive, B_FALSE, &local_nv, &local_avl)) != 0) |
34dc7c2f BB |
2469 | return (error); |
2470 | ||
2471 | /* | |
2472 | * Process deletes and renames | |
2473 | */ | |
2474 | for (fselem = nvlist_next_nvpair(local_nv, NULL); | |
2475 | fselem; fselem = nextfselem) { | |
2476 | nvlist_t *nvfs, *snaps; | |
2477 | nvlist_t *stream_nvfs = NULL; | |
2478 | nvpair_t *snapelem, *nextsnapelem; | |
2479 | uint64_t fromguid = 0; | |
2480 | uint64_t originguid = 0; | |
2481 | uint64_t stream_originguid = 0; | |
2482 | uint64_t parent_fromsnap_guid, stream_parent_fromsnap_guid; | |
2483 | char *fsname, *stream_fsname; | |
2484 | ||
2485 | nextfselem = nvlist_next_nvpair(local_nv, fselem); | |
2486 | ||
2487 | VERIFY(0 == nvpair_value_nvlist(fselem, &nvfs)); | |
2488 | VERIFY(0 == nvlist_lookup_nvlist(nvfs, "snaps", &snaps)); | |
2489 | VERIFY(0 == nvlist_lookup_string(nvfs, "name", &fsname)); | |
2490 | VERIFY(0 == nvlist_lookup_uint64(nvfs, "parentfromsnap", | |
2491 | &parent_fromsnap_guid)); | |
2492 | (void) nvlist_lookup_uint64(nvfs, "origin", &originguid); | |
2493 | ||
2494 | /* | |
2495 | * First find the stream's fs, so we can check for | |
2496 | * a different origin (due to "zfs promote") | |
2497 | */ | |
2498 | for (snapelem = nvlist_next_nvpair(snaps, NULL); | |
2499 | snapelem; snapelem = nvlist_next_nvpair(snaps, snapelem)) { | |
2500 | uint64_t thisguid; | |
2501 | ||
2502 | VERIFY(0 == nvpair_value_uint64(snapelem, &thisguid)); | |
2503 | stream_nvfs = fsavl_find(stream_avl, thisguid, NULL); | |
2504 | ||
2505 | if (stream_nvfs != NULL) | |
2506 | break; | |
2507 | } | |
2508 | ||
2509 | /* check for promote */ | |
2510 | (void) nvlist_lookup_uint64(stream_nvfs, "origin", | |
2511 | &stream_originguid); | |
2512 | if (stream_nvfs && originguid != stream_originguid) { | |
2513 | switch (created_before(hdl, local_avl, | |
2514 | stream_originguid, originguid)) { | |
2515 | case 1: { | |
2516 | /* promote it! */ | |
a08ee875 | 2517 | zfs_cmd_t zc = {"\0"}; |
34dc7c2f BB |
2518 | nvlist_t *origin_nvfs; |
2519 | char *origin_fsname; | |
2520 | ||
330d06f9 | 2521 | if (flags->verbose) |
34dc7c2f BB |
2522 | (void) printf("promoting %s\n", fsname); |
2523 | ||
2524 | origin_nvfs = fsavl_find(local_avl, originguid, | |
2525 | NULL); | |
2526 | VERIFY(0 == nvlist_lookup_string(origin_nvfs, | |
2527 | "name", &origin_fsname)); | |
2528 | (void) strlcpy(zc.zc_value, origin_fsname, | |
2529 | sizeof (zc.zc_value)); | |
2530 | (void) strlcpy(zc.zc_name, fsname, | |
2531 | sizeof (zc.zc_name)); | |
2532 | error = zfs_ioctl(hdl, ZFS_IOC_PROMOTE, &zc); | |
2533 | if (error == 0) | |
2534 | progress = B_TRUE; | |
2535 | break; | |
2536 | } | |
2537 | default: | |
2538 | break; | |
2539 | case -1: | |
2540 | fsavl_destroy(local_avl); | |
2541 | nvlist_free(local_nv); | |
2542 | return (-1); | |
2543 | } | |
2544 | /* | |
2545 | * We had/have the wrong origin, therefore our | |
2546 | * list of snapshots is wrong. Need to handle | |
2547 | * them on the next pass. | |
2548 | */ | |
2549 | needagain = B_TRUE; | |
2550 | continue; | |
2551 | } | |
2552 | ||
2553 | for (snapelem = nvlist_next_nvpair(snaps, NULL); | |
2554 | snapelem; snapelem = nextsnapelem) { | |
2555 | uint64_t thisguid; | |
2556 | char *stream_snapname; | |
b128c09f | 2557 | nvlist_t *found, *props; |
34dc7c2f BB |
2558 | |
2559 | nextsnapelem = nvlist_next_nvpair(snaps, snapelem); | |
2560 | ||
2561 | VERIFY(0 == nvpair_value_uint64(snapelem, &thisguid)); | |
2562 | found = fsavl_find(stream_avl, thisguid, | |
2563 | &stream_snapname); | |
2564 | ||
2565 | /* check for delete */ | |
2566 | if (found == NULL) { | |
cae5b340 | 2567 | char name[ZFS_MAX_DATASET_NAME_LEN]; |
34dc7c2f | 2568 | |
330d06f9 | 2569 | if (!flags->force) |
34dc7c2f BB |
2570 | continue; |
2571 | ||
2572 | (void) snprintf(name, sizeof (name), "%s@%s", | |
2573 | fsname, nvpair_name(snapelem)); | |
2574 | ||
2575 | error = recv_destroy(hdl, name, | |
2576 | strlen(fsname)+1, newname, flags); | |
2577 | if (error) | |
2578 | needagain = B_TRUE; | |
2579 | else | |
2580 | progress = B_TRUE; | |
e10b0808 AX |
2581 | sprintf(guidname, "%llu", |
2582 | (u_longlong_t)thisguid); | |
ea04106b | 2583 | nvlist_add_boolean(deleted, guidname); |
34dc7c2f BB |
2584 | continue; |
2585 | } | |
2586 | ||
2587 | stream_nvfs = found; | |
2588 | ||
b128c09f BB |
2589 | if (0 == nvlist_lookup_nvlist(stream_nvfs, "snapprops", |
2590 | &props) && 0 == nvlist_lookup_nvlist(props, | |
2591 | stream_snapname, &props)) { | |
a08ee875 | 2592 | zfs_cmd_t zc = {"\0"}; |
b128c09f | 2593 | |
428870ff | 2594 | zc.zc_cookie = B_TRUE; /* received */ |
b128c09f BB |
2595 | (void) snprintf(zc.zc_name, sizeof (zc.zc_name), |
2596 | "%s@%s", fsname, nvpair_name(snapelem)); | |
2597 | if (zcmd_write_src_nvlist(hdl, &zc, | |
2598 | props) == 0) { | |
2599 | (void) zfs_ioctl(hdl, | |
2600 | ZFS_IOC_SET_PROP, &zc); | |
2601 | zcmd_free_nvlists(&zc); | |
2602 | } | |
2603 | } | |
2604 | ||
34dc7c2f BB |
2605 | /* check for different snapname */ |
2606 | if (strcmp(nvpair_name(snapelem), | |
2607 | stream_snapname) != 0) { | |
cae5b340 AX |
2608 | char name[ZFS_MAX_DATASET_NAME_LEN]; |
2609 | char tryname[ZFS_MAX_DATASET_NAME_LEN]; | |
34dc7c2f BB |
2610 | |
2611 | (void) snprintf(name, sizeof (name), "%s@%s", | |
2612 | fsname, nvpair_name(snapelem)); | |
2613 | (void) snprintf(tryname, sizeof (name), "%s@%s", | |
2614 | fsname, stream_snapname); | |
2615 | ||
2616 | error = recv_rename(hdl, name, tryname, | |
2617 | strlen(fsname)+1, newname, flags); | |
2618 | if (error) | |
2619 | needagain = B_TRUE; | |
2620 | else | |
2621 | progress = B_TRUE; | |
2622 | } | |
2623 | ||
2624 | if (strcmp(stream_snapname, fromsnap) == 0) | |
2625 | fromguid = thisguid; | |
2626 | } | |
2627 | ||
2628 | /* check for delete */ | |
2629 | if (stream_nvfs == NULL) { | |
330d06f9 | 2630 | if (!flags->force) |
34dc7c2f BB |
2631 | continue; |
2632 | ||
2633 | error = recv_destroy(hdl, fsname, strlen(tofs)+1, | |
2634 | newname, flags); | |
2635 | if (error) | |
2636 | needagain = B_TRUE; | |
2637 | else | |
2638 | progress = B_TRUE; | |
e10b0808 | 2639 | sprintf(guidname, "%llu", |
cae5b340 | 2640 | (u_longlong_t)parent_fromsnap_guid); |
ea04106b | 2641 | nvlist_add_boolean(deleted, guidname); |
34dc7c2f BB |
2642 | continue; |
2643 | } | |
2644 | ||
428870ff | 2645 | if (fromguid == 0) { |
330d06f9 | 2646 | if (flags->verbose) { |
428870ff BB |
2647 | (void) printf("local fs %s does not have " |
2648 | "fromsnap (%s in stream); must have " | |
2649 | "been deleted locally; ignoring\n", | |
2650 | fsname, fromsnap); | |
2651 | } | |
34dc7c2f BB |
2652 | continue; |
2653 | } | |
2654 | ||
2655 | VERIFY(0 == nvlist_lookup_string(stream_nvfs, | |
2656 | "name", &stream_fsname)); | |
2657 | VERIFY(0 == nvlist_lookup_uint64(stream_nvfs, | |
2658 | "parentfromsnap", &stream_parent_fromsnap_guid)); | |
2659 | ||
428870ff BB |
2660 | s1 = strrchr(fsname, '/'); |
2661 | s2 = strrchr(stream_fsname, '/'); | |
2662 | ||
ea04106b AX |
2663 | /* |
2664 | * Check if we're going to rename based on parent guid change | |
2665 | * and the current parent guid was also deleted. If it was then | |
2666 | * rename will fail and is likely unneeded, so avoid this and | |
2667 | * force an early retry to determine the new | |
2668 | * parent_fromsnap_guid. | |
2669 | */ | |
2670 | if (stream_parent_fromsnap_guid != 0 && | |
2671 | parent_fromsnap_guid != 0 && | |
2672 | stream_parent_fromsnap_guid != parent_fromsnap_guid) { | |
e10b0808 | 2673 | sprintf(guidname, "%llu", |
cae5b340 | 2674 | (u_longlong_t)parent_fromsnap_guid); |
ea04106b AX |
2675 | if (nvlist_exists(deleted, guidname)) { |
2676 | progress = B_TRUE; | |
2677 | needagain = B_TRUE; | |
2678 | goto doagain; | |
2679 | } | |
2680 | } | |
2681 | ||
428870ff BB |
2682 | /* |
2683 | * Check for rename. If the exact receive path is specified, it | |
2684 | * does not count as a rename, but we still need to check the | |
2685 | * datasets beneath it. | |
2686 | */ | |
34dc7c2f | 2687 | if ((stream_parent_fromsnap_guid != 0 && |
428870ff | 2688 | parent_fromsnap_guid != 0 && |
34dc7c2f | 2689 | stream_parent_fromsnap_guid != parent_fromsnap_guid) || |
330d06f9 | 2690 | ((flags->isprefix || strcmp(tofs, fsname) != 0) && |
428870ff | 2691 | (s1 != NULL) && (s2 != NULL) && strcmp(s1, s2) != 0)) { |
34dc7c2f | 2692 | nvlist_t *parent; |
cae5b340 | 2693 | char tryname[ZFS_MAX_DATASET_NAME_LEN]; |
34dc7c2f BB |
2694 | |
2695 | parent = fsavl_find(local_avl, | |
2696 | stream_parent_fromsnap_guid, NULL); | |
2697 | /* | |
2698 | * NB: parent might not be found if we used the | |
2699 | * tosnap for stream_parent_fromsnap_guid, | |
2700 | * because the parent is a newly-created fs; | |
2701 | * we'll be able to rename it after we recv the | |
2702 | * new fs. | |
2703 | */ | |
2704 | if (parent != NULL) { | |
2705 | char *pname; | |
2706 | ||
2707 | VERIFY(0 == nvlist_lookup_string(parent, "name", | |
2708 | &pname)); | |
2709 | (void) snprintf(tryname, sizeof (tryname), | |
2710 | "%s%s", pname, strrchr(stream_fsname, '/')); | |
2711 | } else { | |
2712 | tryname[0] = '\0'; | |
330d06f9 | 2713 | if (flags->verbose) { |
34dc7c2f BB |
2714 | (void) printf("local fs %s new parent " |
2715 | "not found\n", fsname); | |
2716 | } | |
2717 | } | |
2718 | ||
428870ff BB |
2719 | newname[0] = '\0'; |
2720 | ||
34dc7c2f BB |
2721 | error = recv_rename(hdl, fsname, tryname, |
2722 | strlen(tofs)+1, newname, flags); | |
428870ff BB |
2723 | |
2724 | if (renamed != NULL && newname[0] != '\0') { | |
2725 | VERIFY(0 == nvlist_add_boolean(renamed, | |
2726 | newname)); | |
2727 | } | |
2728 | ||
34dc7c2f BB |
2729 | if (error) |
2730 | needagain = B_TRUE; | |
2731 | else | |
2732 | progress = B_TRUE; | |
2733 | } | |
2734 | } | |
2735 | ||
ea04106b | 2736 | doagain: |
34dc7c2f BB |
2737 | fsavl_destroy(local_avl); |
2738 | nvlist_free(local_nv); | |
ea04106b | 2739 | nvlist_free(deleted); |
34dc7c2f BB |
2740 | |
2741 | if (needagain && progress) { | |
2742 | /* do another pass to fix up temporary names */ | |
330d06f9 | 2743 | if (flags->verbose) |
34dc7c2f BB |
2744 | (void) printf("another pass:\n"); |
2745 | goto again; | |
2746 | } | |
2747 | ||
2748 | return (needagain); | |
2749 | } | |
2750 | ||
2751 | static int | |
2752 | zfs_receive_package(libzfs_handle_t *hdl, int fd, const char *destname, | |
330d06f9 | 2753 | recvflags_t *flags, dmu_replay_record_t *drr, zio_cksum_t *zc, |
cae5b340 AX |
2754 | char **top_zfs, int cleanup_fd, uint64_t *action_handlep, |
2755 | nvlist_t *cmdprops) | |
34dc7c2f BB |
2756 | { |
2757 | nvlist_t *stream_nv = NULL; | |
2758 | avl_tree_t *stream_avl = NULL; | |
2759 | char *fromsnap = NULL; | |
cae5b340 | 2760 | char *sendsnap = NULL; |
428870ff | 2761 | char *cp; |
cae5b340 AX |
2762 | char tofs[ZFS_MAX_DATASET_NAME_LEN]; |
2763 | char sendfs[ZFS_MAX_DATASET_NAME_LEN]; | |
34dc7c2f BB |
2764 | char errbuf[1024]; |
2765 | dmu_replay_record_t drre; | |
2766 | int error; | |
2767 | boolean_t anyerr = B_FALSE; | |
2768 | boolean_t softerr = B_FALSE; | |
428870ff | 2769 | boolean_t recursive; |
34dc7c2f BB |
2770 | |
2771 | (void) snprintf(errbuf, sizeof (errbuf), dgettext(TEXT_DOMAIN, | |
2772 | "cannot receive")); | |
2773 | ||
34dc7c2f BB |
2774 | assert(drr->drr_type == DRR_BEGIN); |
2775 | assert(drr->drr_u.drr_begin.drr_magic == DMU_BACKUP_MAGIC); | |
428870ff BB |
2776 | assert(DMU_GET_STREAM_HDRTYPE(drr->drr_u.drr_begin.drr_versioninfo) == |
2777 | DMU_COMPOUNDSTREAM); | |
34dc7c2f BB |
2778 | |
2779 | /* | |
2780 | * Read in the nvlist from the stream. | |
2781 | */ | |
2782 | if (drr->drr_payloadlen != 0) { | |
34dc7c2f | 2783 | error = recv_read_nvlist(hdl, fd, drr->drr_payloadlen, |
330d06f9 | 2784 | &stream_nv, flags->byteswap, zc); |
34dc7c2f BB |
2785 | if (error) { |
2786 | error = zfs_error(hdl, EZFS_BADSTREAM, errbuf); | |
2787 | goto out; | |
2788 | } | |
2789 | } | |
2790 | ||
428870ff BB |
2791 | recursive = (nvlist_lookup_boolean(stream_nv, "not_recursive") == |
2792 | ENOENT); | |
2793 | ||
2794 | if (recursive && strchr(destname, '@')) { | |
2795 | zfs_error_aux(hdl, dgettext(TEXT_DOMAIN, | |
2796 | "cannot specify snapshot name for multi-snapshot stream")); | |
2797 | error = zfs_error(hdl, EZFS_BADSTREAM, errbuf); | |
2798 | goto out; | |
2799 | } | |
2800 | ||
34dc7c2f BB |
2801 | /* |
2802 | * Read in the end record and verify checksum. | |
2803 | */ | |
2804 | if (0 != (error = recv_read(hdl, fd, &drre, sizeof (drre), | |
330d06f9 | 2805 | flags->byteswap, NULL))) |
34dc7c2f | 2806 | goto out; |
330d06f9 | 2807 | if (flags->byteswap) { |
34dc7c2f BB |
2808 | drre.drr_type = BSWAP_32(drre.drr_type); |
2809 | drre.drr_u.drr_end.drr_checksum.zc_word[0] = | |
2810 | BSWAP_64(drre.drr_u.drr_end.drr_checksum.zc_word[0]); | |
2811 | drre.drr_u.drr_end.drr_checksum.zc_word[1] = | |
2812 | BSWAP_64(drre.drr_u.drr_end.drr_checksum.zc_word[1]); | |
2813 | drre.drr_u.drr_end.drr_checksum.zc_word[2] = | |
2814 | BSWAP_64(drre.drr_u.drr_end.drr_checksum.zc_word[2]); | |
2815 | drre.drr_u.drr_end.drr_checksum.zc_word[3] = | |
2816 | BSWAP_64(drre.drr_u.drr_end.drr_checksum.zc_word[3]); | |
2817 | } | |
2818 | if (drre.drr_type != DRR_END) { | |
2819 | error = zfs_error(hdl, EZFS_BADSTREAM, errbuf); | |
2820 | goto out; | |
2821 | } | |
2822 | if (!ZIO_CHECKSUM_EQUAL(drre.drr_u.drr_end.drr_checksum, *zc)) { | |
2823 | zfs_error_aux(hdl, dgettext(TEXT_DOMAIN, | |
2824 | "incorrect header checksum")); | |
2825 | error = zfs_error(hdl, EZFS_BADSTREAM, errbuf); | |
2826 | goto out; | |
2827 | } | |
2828 | ||
2829 | (void) nvlist_lookup_string(stream_nv, "fromsnap", &fromsnap); | |
2830 | ||
2831 | if (drr->drr_payloadlen != 0) { | |
2832 | nvlist_t *stream_fss; | |
2833 | ||
2834 | VERIFY(0 == nvlist_lookup_nvlist(stream_nv, "fss", | |
2835 | &stream_fss)); | |
2836 | if ((stream_avl = fsavl_create(stream_fss)) == NULL) { | |
2837 | zfs_error_aux(hdl, dgettext(TEXT_DOMAIN, | |
2838 | "couldn't allocate avl tree")); | |
2839 | error = zfs_error(hdl, EZFS_NOMEM, errbuf); | |
2840 | goto out; | |
2841 | } | |
2842 | ||
cae5b340 | 2843 | if (fromsnap != NULL && recursive) { |
428870ff BB |
2844 | nvlist_t *renamed = NULL; |
2845 | nvpair_t *pair = NULL; | |
2846 | ||
cae5b340 | 2847 | (void) strlcpy(tofs, destname, sizeof (tofs)); |
330d06f9 | 2848 | if (flags->isprefix) { |
428870ff BB |
2849 | struct drr_begin *drrb = &drr->drr_u.drr_begin; |
2850 | int i; | |
2851 | ||
330d06f9 | 2852 | if (flags->istail) { |
428870ff BB |
2853 | cp = strrchr(drrb->drr_toname, '/'); |
2854 | if (cp == NULL) { | |
2855 | (void) strlcat(tofs, "/", | |
cae5b340 | 2856 | sizeof (tofs)); |
428870ff BB |
2857 | i = 0; |
2858 | } else { | |
2859 | i = (cp - drrb->drr_toname); | |
2860 | } | |
2861 | } else { | |
2862 | i = strcspn(drrb->drr_toname, "/@"); | |
2863 | } | |
34dc7c2f | 2864 | /* zfs_receive_one() will create_parents() */ |
428870ff | 2865 | (void) strlcat(tofs, &drrb->drr_toname[i], |
cae5b340 | 2866 | sizeof (tofs)); |
34dc7c2f BB |
2867 | *strchr(tofs, '@') = '\0'; |
2868 | } | |
428870ff | 2869 | |
cae5b340 | 2870 | if (!flags->dryrun && !flags->nomount) { |
428870ff BB |
2871 | VERIFY(0 == nvlist_alloc(&renamed, |
2872 | NV_UNIQUE_NAME, 0)); | |
2873 | } | |
2874 | ||
2875 | softerr = recv_incremental_replication(hdl, tofs, flags, | |
2876 | stream_nv, stream_avl, renamed); | |
2877 | ||
2878 | /* Unmount renamed filesystems before receiving. */ | |
2879 | while ((pair = nvlist_next_nvpair(renamed, | |
2880 | pair)) != NULL) { | |
2881 | zfs_handle_t *zhp; | |
2882 | prop_changelist_t *clp = NULL; | |
2883 | ||
2884 | zhp = zfs_open(hdl, nvpair_name(pair), | |
2885 | ZFS_TYPE_FILESYSTEM); | |
2886 | if (zhp != NULL) { | |
2887 | clp = changelist_gather(zhp, | |
2888 | ZFS_PROP_MOUNTPOINT, 0, 0); | |
2889 | zfs_close(zhp); | |
2890 | if (clp != NULL) { | |
2891 | softerr |= | |
2892 | changelist_prefix(clp); | |
2893 | changelist_free(clp); | |
2894 | } | |
2895 | } | |
2896 | } | |
2897 | ||
2898 | nvlist_free(renamed); | |
34dc7c2f BB |
2899 | } |
2900 | } | |
2901 | ||
428870ff BB |
2902 | /* |
2903 | * Get the fs specified by the first path in the stream (the top level | |
2904 | * specified by 'zfs send') and pass it to each invocation of | |
2905 | * zfs_receive_one(). | |
2906 | */ | |
2907 | (void) strlcpy(sendfs, drr->drr_u.drr_begin.drr_toname, | |
cae5b340 AX |
2908 | sizeof (sendfs)); |
2909 | if ((cp = strchr(sendfs, '@')) != NULL) { | |
428870ff | 2910 | *cp = '\0'; |
cae5b340 AX |
2911 | /* |
2912 | * Find the "sendsnap", the final snapshot in a replication | |
2913 | * stream. zfs_receive_one() handles certain errors | |
2914 | * differently, depending on if the contained stream is the | |
2915 | * last one or not. | |
2916 | */ | |
2917 | sendsnap = (cp + 1); | |
2918 | } | |
34dc7c2f BB |
2919 | |
2920 | /* Finally, receive each contained stream */ | |
2921 | do { | |
2922 | /* | |
2923 | * we should figure out if it has a recoverable | |
2924 | * error, in which case do a recv_skip() and drive on. | |
2925 | * Note, if we fail due to already having this guid, | |
2926 | * zfs_receive_one() will take care of it (ie, | |
2927 | * recv_skip() and return 0). | |
2928 | */ | |
cae5b340 | 2929 | error = zfs_receive_impl(hdl, destname, NULL, flags, fd, |
572e2857 | 2930 | sendfs, stream_nv, stream_avl, top_zfs, cleanup_fd, |
cae5b340 | 2931 | action_handlep, sendsnap, cmdprops); |
34dc7c2f BB |
2932 | if (error == ENODATA) { |
2933 | error = 0; | |
2934 | break; | |
2935 | } | |
2936 | anyerr |= error; | |
2937 | } while (error == 0); | |
2938 | ||
cae5b340 | 2939 | if (drr->drr_payloadlen != 0 && recursive && fromsnap != NULL) { |
34dc7c2f BB |
2940 | /* |
2941 | * Now that we have the fs's they sent us, try the | |
2942 | * renames again. | |
2943 | */ | |
2944 | softerr = recv_incremental_replication(hdl, tofs, flags, | |
428870ff | 2945 | stream_nv, stream_avl, NULL); |
34dc7c2f BB |
2946 | } |
2947 | ||
2948 | out: | |
2949 | fsavl_destroy(stream_avl); | |
cae5b340 | 2950 | nvlist_free(stream_nv); |
34dc7c2f BB |
2951 | if (softerr) |
2952 | error = -2; | |
2953 | if (anyerr) | |
2954 | error = -1; | |
2955 | return (error); | |
2956 | } | |
2957 | ||
428870ff BB |
2958 | static void |
2959 | trunc_prop_errs(int truncated) | |
2960 | { | |
2961 | ASSERT(truncated != 0); | |
2962 | ||
2963 | if (truncated == 1) | |
2964 | (void) fprintf(stderr, dgettext(TEXT_DOMAIN, | |
2965 | "1 more property could not be set\n")); | |
2966 | else | |
2967 | (void) fprintf(stderr, dgettext(TEXT_DOMAIN, | |
2968 | "%d more properties could not be set\n"), truncated); | |
2969 | } | |
2970 | ||
34dc7c2f BB |
2971 | static int |
2972 | recv_skip(libzfs_handle_t *hdl, int fd, boolean_t byteswap) | |
2973 | { | |
2974 | dmu_replay_record_t *drr; | |
e10b0808 | 2975 | void *buf = zfs_alloc(hdl, SPA_MAXBLOCKSIZE); |
428870ff BB |
2976 | char errbuf[1024]; |
2977 | ||
2978 | (void) snprintf(errbuf, sizeof (errbuf), dgettext(TEXT_DOMAIN, | |
2979 | "cannot receive:")); | |
34dc7c2f BB |
2980 | |
2981 | /* XXX would be great to use lseek if possible... */ | |
2982 | drr = buf; | |
2983 | ||
2984 | while (recv_read(hdl, fd, drr, sizeof (dmu_replay_record_t), | |
2985 | byteswap, NULL) == 0) { | |
2986 | if (byteswap) | |
2987 | drr->drr_type = BSWAP_32(drr->drr_type); | |
2988 | ||
2989 | switch (drr->drr_type) { | |
2990 | case DRR_BEGIN: | |
428870ff | 2991 | if (drr->drr_payloadlen != 0) { |
cae5b340 AX |
2992 | (void) recv_read(hdl, fd, buf, |
2993 | drr->drr_payloadlen, B_FALSE, NULL); | |
428870ff | 2994 | } |
34dc7c2f BB |
2995 | break; |
2996 | ||
2997 | case DRR_END: | |
2998 | free(buf); | |
2999 | return (0); | |
3000 | ||
3001 | case DRR_OBJECT: | |
3002 | if (byteswap) { | |
3003 | drr->drr_u.drr_object.drr_bonuslen = | |
3004 | BSWAP_32(drr->drr_u.drr_object. | |
3005 | drr_bonuslen); | |
3006 | } | |
3007 | (void) recv_read(hdl, fd, buf, | |
3008 | P2ROUNDUP(drr->drr_u.drr_object.drr_bonuslen, 8), | |
3009 | B_FALSE, NULL); | |
3010 | break; | |
3011 | ||
3012 | case DRR_WRITE: | |
3013 | if (byteswap) { | |
cae5b340 AX |
3014 | drr->drr_u.drr_write.drr_logical_size = |
3015 | BSWAP_64( | |
3016 | drr->drr_u.drr_write.drr_logical_size); | |
3017 | drr->drr_u.drr_write.drr_compressed_size = | |
3018 | BSWAP_64( | |
3019 | drr->drr_u.drr_write.drr_compressed_size); | |
34dc7c2f | 3020 | } |
cae5b340 AX |
3021 | uint64_t payload_size = |
3022 | DRR_WRITE_PAYLOAD_SIZE(&drr->drr_u.drr_write); | |
34dc7c2f | 3023 | (void) recv_read(hdl, fd, buf, |
cae5b340 | 3024 | payload_size, B_FALSE, NULL); |
34dc7c2f | 3025 | break; |
428870ff BB |
3026 | case DRR_SPILL: |
3027 | if (byteswap) { | |
cae5b340 | 3028 | drr->drr_u.drr_spill.drr_length = |
428870ff BB |
3029 | BSWAP_64(drr->drr_u.drr_spill.drr_length); |
3030 | } | |
3031 | (void) recv_read(hdl, fd, buf, | |
3032 | drr->drr_u.drr_spill.drr_length, B_FALSE, NULL); | |
3033 | break; | |
ea04106b AX |
3034 | case DRR_WRITE_EMBEDDED: |
3035 | if (byteswap) { | |
3036 | drr->drr_u.drr_write_embedded.drr_psize = | |
3037 | BSWAP_32(drr->drr_u.drr_write_embedded. | |
3038 | drr_psize); | |
3039 | } | |
3040 | (void) recv_read(hdl, fd, buf, | |
3041 | P2ROUNDUP(drr->drr_u.drr_write_embedded.drr_psize, | |
3042 | 8), B_FALSE, NULL); | |
3043 | break; | |
428870ff | 3044 | case DRR_WRITE_BYREF: |
34dc7c2f BB |
3045 | case DRR_FREEOBJECTS: |
3046 | case DRR_FREE: | |
3047 | break; | |
3048 | ||
3049 | default: | |
428870ff BB |
3050 | zfs_error_aux(hdl, dgettext(TEXT_DOMAIN, |
3051 | "invalid record type")); | |
cae5b340 | 3052 | free(buf); |
428870ff | 3053 | return (zfs_error(hdl, EZFS_BADSTREAM, errbuf)); |
34dc7c2f BB |
3054 | } |
3055 | } | |
3056 | ||
3057 | free(buf); | |
3058 | return (-1); | |
3059 | } | |
3060 | ||
cae5b340 AX |
3061 | static void |
3062 | recv_ecksum_set_aux(libzfs_handle_t *hdl, const char *target_snap, | |
3063 | boolean_t resumable) | |
3064 | { | |
3065 | char target_fs[ZFS_MAX_DATASET_NAME_LEN]; | |
3066 | ||
3067 | zfs_error_aux(hdl, dgettext(TEXT_DOMAIN, | |
3068 | "checksum mismatch or incomplete stream")); | |
3069 | ||
3070 | if (!resumable) | |
3071 | return; | |
3072 | (void) strlcpy(target_fs, target_snap, sizeof (target_fs)); | |
3073 | *strchr(target_fs, '@') = '\0'; | |
3074 | zfs_handle_t *zhp = zfs_open(hdl, target_fs, | |
3075 | ZFS_TYPE_FILESYSTEM | ZFS_TYPE_VOLUME); | |
3076 | if (zhp == NULL) | |
3077 | return; | |
3078 | ||
3079 | char token_buf[ZFS_MAXPROPLEN]; | |
3080 | int error = zfs_prop_get(zhp, ZFS_PROP_RECEIVE_RESUME_TOKEN, | |
3081 | token_buf, sizeof (token_buf), | |
3082 | NULL, NULL, 0, B_TRUE); | |
3083 | if (error == 0) { | |
3084 | zfs_error_aux(hdl, dgettext(TEXT_DOMAIN, | |
3085 | "checksum mismatch or incomplete stream.\n" | |
3086 | "Partially received snapshot is saved.\n" | |
3087 | "A resuming stream can be generated on the sending " | |
3088 | "system by running:\n" | |
3089 | " zfs send -t %s"), | |
3090 | token_buf); | |
3091 | } | |
3092 | zfs_close(zhp); | |
3093 | } | |
3094 | ||
3095 | /* | |
3096 | * Prepare a new nvlist of properties that are to override (-o) or be excluded | |
3097 | * (-x) from the received dataset | |
3098 | * recvprops: received properties from the send stream | |
3099 | * cmdprops: raw input properties from command line | |
3100 | * origprops: properties, both locally-set and received, currently set on the | |
3101 | * target dataset if it exists, NULL otherwise. | |
3102 | * oxprops: valid output override (-o) and excluded (-x) properties | |
3103 | */ | |
3104 | static int | |
3105 | zfs_setup_cmdline_props(libzfs_handle_t *hdl, zfs_type_t type, boolean_t zoned, | |
3106 | boolean_t recursive, boolean_t toplevel, nvlist_t *recvprops, | |
3107 | nvlist_t *cmdprops, nvlist_t *origprops, nvlist_t **oxprops, | |
3108 | const char *errbuf) | |
3109 | { | |
3110 | nvpair_t *nvp; | |
3111 | nvlist_t *oprops, *voprops; | |
3112 | zfs_handle_t *zhp = NULL; | |
3113 | zpool_handle_t *zpool_hdl = NULL; | |
3114 | int ret = 0; | |
3115 | ||
3116 | if (nvlist_empty(cmdprops)) | |
3117 | return (0); /* No properties to override or exclude */ | |
3118 | ||
3119 | *oxprops = fnvlist_alloc(); | |
3120 | oprops = fnvlist_alloc(); | |
3121 | ||
3122 | /* | |
3123 | * first iteration: process excluded (-x) properties now and gather | |
3124 | * added (-o) properties to be later processed by zfs_valid_proplist() | |
3125 | */ | |
3126 | nvp = NULL; | |
3127 | while ((nvp = nvlist_next_nvpair(cmdprops, nvp)) != NULL) { | |
3128 | const char *name = nvpair_name(nvp); | |
3129 | zfs_prop_t prop = zfs_name_to_prop(name); | |
3130 | ||
3131 | /* "origin" is processed separately, don't handle it here */ | |
3132 | if (prop == ZFS_PROP_ORIGIN) | |
3133 | continue; | |
3134 | ||
3135 | /* | |
3136 | * we're trying to override or exclude a property that does not | |
3137 | * make sense for this type of dataset, but we don't want to | |
3138 | * fail if the receive is recursive: this comes in handy when | |
3139 | * the send stream contains, for instance, a child ZVOL and | |
3140 | * we're trying to receive it with "-o atime=on" | |
3141 | */ | |
3142 | if (!zfs_prop_valid_for_type(prop, type, B_FALSE) && | |
3143 | !zfs_prop_user(name)) { | |
3144 | if (recursive) | |
3145 | continue; | |
3146 | zfs_error_aux(hdl, dgettext(TEXT_DOMAIN, | |
3147 | "property '%s' does not apply to datasets of this " | |
3148 | "type"), name); | |
3149 | ret = zfs_error(hdl, EZFS_BADPROP, errbuf); | |
3150 | goto error; | |
3151 | } | |
3152 | ||
3153 | switch (nvpair_type(nvp)) { | |
3154 | case DATA_TYPE_BOOLEAN: /* -x property */ | |
3155 | /* | |
3156 | * DATA_TYPE_BOOLEAN is the way we're asked to "exclude" | |
3157 | * a property: this is done by forcing an explicit | |
3158 | * inherit on the destination so the effective value is | |
3159 | * not the one we received from the send stream. | |
3160 | * We do this only if the property is not already | |
3161 | * locally-set, in which case its value will take | |
3162 | * priority over the received anyway. | |
3163 | */ | |
3164 | if (nvlist_exists(origprops, name)) { | |
3165 | nvlist_t *attrs; | |
3166 | ||
3167 | attrs = fnvlist_lookup_nvlist(origprops, name); | |
3168 | if (strcmp(fnvlist_lookup_string(attrs, | |
3169 | ZPROP_SOURCE), ZPROP_SOURCE_VAL_RECVD) != 0) | |
3170 | continue; | |
3171 | } | |
3172 | /* | |
3173 | * We can't force an explicit inherit on non-inheritable | |
3174 | * properties: if we're asked to exclude this kind of | |
3175 | * values we remove them from "recvprops" input nvlist. | |
3176 | */ | |
3177 | if (!zfs_prop_inheritable(prop) && | |
3178 | !zfs_prop_user(name) && /* can be inherited too */ | |
3179 | nvlist_exists(recvprops, name)) | |
3180 | fnvlist_remove(recvprops, name); | |
3181 | else | |
3182 | fnvlist_add_nvpair(*oxprops, nvp); | |
3183 | break; | |
3184 | case DATA_TYPE_STRING: /* -o property=value */ | |
3185 | fnvlist_add_nvpair(oprops, nvp); | |
3186 | break; | |
3187 | default: | |
3188 | zfs_error_aux(hdl, dgettext(TEXT_DOMAIN, | |
3189 | "property '%s' must be a string or boolean"), name); | |
3190 | ret = zfs_error(hdl, EZFS_BADPROP, errbuf); | |
3191 | goto error; | |
3192 | } | |
3193 | } | |
3194 | ||
3195 | if (toplevel) { | |
3196 | /* convert override strings properties to native */ | |
3197 | if ((voprops = zfs_valid_proplist(hdl, ZFS_TYPE_DATASET, | |
3198 | oprops, zoned, zhp, zpool_hdl, errbuf)) == NULL) { | |
3199 | ret = zfs_error(hdl, EZFS_BADPROP, errbuf); | |
3200 | goto error; | |
3201 | } | |
3202 | ||
3203 | /* second pass: process "-o" properties */ | |
3204 | fnvlist_merge(*oxprops, voprops); | |
3205 | fnvlist_free(voprops); | |
3206 | } else { | |
3207 | /* override props on child dataset are inherited */ | |
3208 | nvp = NULL; | |
3209 | while ((nvp = nvlist_next_nvpair(oprops, nvp)) != NULL) { | |
3210 | const char *name = nvpair_name(nvp); | |
3211 | fnvlist_add_boolean(*oxprops, name); | |
3212 | } | |
3213 | } | |
3214 | ||
3215 | error: | |
3216 | fnvlist_free(oprops); | |
3217 | return (ret); | |
3218 | } | |
3219 | ||
34dc7c2f BB |
3220 | /* |
3221 | * Restores a backup of tosnap from the file descriptor specified by infd. | |
3222 | */ | |
3223 | static int | |
3224 | zfs_receive_one(libzfs_handle_t *hdl, int infd, const char *tosnap, | |
cae5b340 AX |
3225 | const char *originsnap, recvflags_t *flags, dmu_replay_record_t *drr, |
3226 | dmu_replay_record_t *drr_noswap, const char *sendfs, nvlist_t *stream_nv, | |
3227 | avl_tree_t *stream_avl, char **top_zfs, int cleanup_fd, | |
3228 | uint64_t *action_handlep, const char *finalsnap, nvlist_t *cmdprops) | |
34dc7c2f | 3229 | { |
34dc7c2f | 3230 | time_t begin_time; |
428870ff | 3231 | int ioctl_err, ioctl_errno, err; |
34dc7c2f BB |
3232 | char *cp; |
3233 | struct drr_begin *drrb = &drr->drr_u.drr_begin; | |
3234 | char errbuf[1024]; | |
428870ff | 3235 | const char *chopprefix; |
34dc7c2f BB |
3236 | boolean_t newfs = B_FALSE; |
3237 | boolean_t stream_wantsnewfs; | |
cae5b340 AX |
3238 | boolean_t newprops = B_FALSE; |
3239 | uint64_t read_bytes = 0; | |
3240 | uint64_t errflags = 0; | |
34dc7c2f BB |
3241 | uint64_t parent_snapguid = 0; |
3242 | prop_changelist_t *clp = NULL; | |
b128c09f | 3243 | nvlist_t *snapprops_nvlist = NULL; |
428870ff | 3244 | zprop_errflags_t prop_errflags; |
cae5b340 | 3245 | nvlist_t *prop_errors = NULL; |
428870ff | 3246 | boolean_t recursive; |
cae5b340 AX |
3247 | char *snapname = NULL; |
3248 | char destsnap[MAXPATHLEN * 2]; | |
3249 | char origin[MAXNAMELEN]; | |
3250 | char name[MAXPATHLEN]; | |
3251 | nvlist_t *rcvprops = NULL; /* props received from the send stream */ | |
3252 | nvlist_t *oxprops = NULL; /* override (-o) and exclude (-x) props */ | |
3253 | nvlist_t *origprops = NULL; /* original props (if destination exists) */ | |
3254 | zfs_type_t type; | |
047218e2 | 3255 | boolean_t toplevel = B_FALSE; |
cae5b340 | 3256 | boolean_t zoned = B_FALSE; |
42f7b73b | 3257 | boolean_t hastoken = B_FALSE; |
34dc7c2f BB |
3258 | |
3259 | begin_time = time(NULL); | |
cae5b340 | 3260 | bzero(origin, MAXNAMELEN); |
34dc7c2f BB |
3261 | |
3262 | (void) snprintf(errbuf, sizeof (errbuf), dgettext(TEXT_DOMAIN, | |
3263 | "cannot receive")); | |
3264 | ||
428870ff BB |
3265 | recursive = (nvlist_lookup_boolean(stream_nv, "not_recursive") == |
3266 | ENOENT); | |
3267 | ||
34dc7c2f | 3268 | if (stream_avl != NULL) { |
68d83c55 | 3269 | nvlist_t *lookup = NULL; |
b128c09f BB |
3270 | nvlist_t *fs = fsavl_find(stream_avl, drrb->drr_toguid, |
3271 | &snapname); | |
34dc7c2f BB |
3272 | |
3273 | (void) nvlist_lookup_uint64(fs, "parentfromsnap", | |
3274 | &parent_snapguid); | |
cae5b340 AX |
3275 | err = nvlist_lookup_nvlist(fs, "props", &rcvprops); |
3276 | if (err) { | |
3277 | VERIFY(0 == nvlist_alloc(&rcvprops, NV_UNIQUE_NAME, 0)); | |
3278 | newprops = B_TRUE; | |
3279 | } | |
34dc7c2f | 3280 | |
330d06f9 | 3281 | if (flags->canmountoff) { |
cae5b340 | 3282 | VERIFY(0 == nvlist_add_uint64(rcvprops, |
34dc7c2f BB |
3283 | zfs_prop_to_name(ZFS_PROP_CANMOUNT), 0)); |
3284 | } | |
68d83c55 AX |
3285 | if (0 == nvlist_lookup_nvlist(fs, "snapprops", &lookup)) { |
3286 | VERIFY(0 == nvlist_lookup_nvlist(lookup, | |
3287 | snapname, &snapprops_nvlist)); | |
3288 | } | |
34dc7c2f BB |
3289 | } |
3290 | ||
428870ff BB |
3291 | cp = NULL; |
3292 | ||
34dc7c2f BB |
3293 | /* |
3294 | * Determine how much of the snapshot name stored in the stream | |
3295 | * we are going to tack on to the name they specified on the | |
3296 | * command line, and how much we are going to chop off. | |
3297 | * | |
3298 | * If they specified a snapshot, chop the entire name stored in | |
3299 | * the stream. | |
3300 | */ | |
330d06f9 | 3301 | if (flags->istail) { |
428870ff BB |
3302 | /* |
3303 | * A filesystem was specified with -e. We want to tack on only | |
3304 | * the tail of the sent snapshot path. | |
3305 | */ | |
3306 | if (strchr(tosnap, '@')) { | |
3307 | zfs_error_aux(hdl, dgettext(TEXT_DOMAIN, "invalid " | |
3308 | "argument - snapshot not allowed with -e")); | |
cae5b340 AX |
3309 | err = zfs_error(hdl, EZFS_INVALIDNAME, errbuf); |
3310 | goto out; | |
428870ff BB |
3311 | } |
3312 | ||
3313 | chopprefix = strrchr(sendfs, '/'); | |
3314 | ||
3315 | if (chopprefix == NULL) { | |
3316 | /* | |
3317 | * The tail is the poolname, so we need to | |
3318 | * prepend a path separator. | |
3319 | */ | |
3320 | int len = strlen(drrb->drr_toname); | |
3321 | cp = malloc(len + 2); | |
3322 | cp[0] = '/'; | |
3323 | (void) strcpy(&cp[1], drrb->drr_toname); | |
3324 | chopprefix = cp; | |
3325 | } else { | |
3326 | chopprefix = drrb->drr_toname + (chopprefix - sendfs); | |
3327 | } | |
330d06f9 | 3328 | } else if (flags->isprefix) { |
34dc7c2f | 3329 | /* |
428870ff BB |
3330 | * A filesystem was specified with -d. We want to tack on |
3331 | * everything but the first element of the sent snapshot path | |
3332 | * (all but the pool name). | |
34dc7c2f BB |
3333 | */ |
3334 | if (strchr(tosnap, '@')) { | |
3335 | zfs_error_aux(hdl, dgettext(TEXT_DOMAIN, "invalid " | |
3336 | "argument - snapshot not allowed with -d")); | |
cae5b340 AX |
3337 | err = zfs_error(hdl, EZFS_INVALIDNAME, errbuf); |
3338 | goto out; | |
34dc7c2f | 3339 | } |
428870ff BB |
3340 | |
3341 | chopprefix = strchr(drrb->drr_toname, '/'); | |
3342 | if (chopprefix == NULL) | |
3343 | chopprefix = strchr(drrb->drr_toname, '@'); | |
34dc7c2f BB |
3344 | } else if (strchr(tosnap, '@') == NULL) { |
3345 | /* | |
428870ff BB |
3346 | * If a filesystem was specified without -d or -e, we want to |
3347 | * tack on everything after the fs specified by 'zfs send'. | |
34dc7c2f | 3348 | */ |
428870ff BB |
3349 | chopprefix = drrb->drr_toname + strlen(sendfs); |
3350 | } else { | |
3351 | /* A snapshot was specified as an exact path (no -d or -e). */ | |
3352 | if (recursive) { | |
3353 | zfs_error_aux(hdl, dgettext(TEXT_DOMAIN, | |
3354 | "cannot specify snapshot name for multi-snapshot " | |
3355 | "stream")); | |
cae5b340 AX |
3356 | err = zfs_error(hdl, EZFS_BADSTREAM, errbuf); |
3357 | goto out; | |
428870ff BB |
3358 | } |
3359 | chopprefix = drrb->drr_toname + strlen(drrb->drr_toname); | |
34dc7c2f | 3360 | } |
428870ff BB |
3361 | |
3362 | ASSERT(strstr(drrb->drr_toname, sendfs) == drrb->drr_toname); | |
3363 | ASSERT(chopprefix > drrb->drr_toname); | |
3364 | ASSERT(chopprefix <= drrb->drr_toname + strlen(drrb->drr_toname)); | |
3365 | ASSERT(chopprefix[0] == '/' || chopprefix[0] == '@' || | |
3366 | chopprefix[0] == '\0'); | |
34dc7c2f BB |
3367 | |
3368 | /* | |
cae5b340 | 3369 | * Determine name of destination snapshot. |
34dc7c2f | 3370 | */ |
cae5b340 AX |
3371 | (void) strlcpy(destsnap, tosnap, sizeof (destsnap)); |
3372 | (void) strlcat(destsnap, chopprefix, sizeof (destsnap)); | |
428870ff | 3373 | free(cp); |
cae5b340 AX |
3374 | if (!zfs_name_valid(destsnap, ZFS_TYPE_SNAPSHOT)) { |
3375 | err = zfs_error(hdl, EZFS_INVALIDNAME, errbuf); | |
3376 | goto out; | |
34dc7c2f BB |
3377 | } |
3378 | ||
3379 | /* | |
cae5b340 | 3380 | * Determine the name of the origin snapshot. |
34dc7c2f | 3381 | */ |
cae5b340 | 3382 | if (originsnap) { |
42f7b73b | 3383 | (void) strlcpy(origin, originsnap, sizeof (origin)); |
cae5b340 AX |
3384 | if (flags->verbose) |
3385 | (void) printf("using provided clone origin %s\n", | |
3386 | origin); | |
3387 | } else if (drrb->drr_flags & DRR_FLAG_CLONE) { | |
3388 | if (guid_to_name(hdl, destsnap, | |
3389 | drrb->drr_fromguid, B_FALSE, origin) != 0) { | |
34dc7c2f BB |
3390 | zfs_error_aux(hdl, dgettext(TEXT_DOMAIN, |
3391 | "local origin for clone %s does not exist"), | |
cae5b340 AX |
3392 | destsnap); |
3393 | err = zfs_error(hdl, EZFS_NOENT, errbuf); | |
3394 | goto out; | |
34dc7c2f | 3395 | } |
330d06f9 | 3396 | if (flags->verbose) |
cae5b340 | 3397 | (void) printf("found clone origin %s\n", origin); |
34dc7c2f BB |
3398 | } |
3399 | ||
cae5b340 AX |
3400 | boolean_t resuming = DMU_GET_FEATUREFLAGS(drrb->drr_versioninfo) & |
3401 | DMU_BACKUP_FEATURE_RESUMING; | |
b8864a23 | 3402 | stream_wantsnewfs = (drrb->drr_fromguid == 0 || |
cae5b340 | 3403 | (drrb->drr_flags & DRR_FLAG_CLONE) || originsnap) && !resuming; |
34dc7c2f BB |
3404 | |
3405 | if (stream_wantsnewfs) { | |
3406 | /* | |
3407 | * if the parent fs does not exist, look for it based on | |
3408 | * the parent snap GUID | |
3409 | */ | |
3410 | (void) snprintf(errbuf, sizeof (errbuf), dgettext(TEXT_DOMAIN, | |
3411 | "cannot receive new filesystem stream")); | |
3412 | ||
cae5b340 AX |
3413 | (void) strcpy(name, destsnap); |
3414 | cp = strrchr(name, '/'); | |
34dc7c2f BB |
3415 | if (cp) |
3416 | *cp = '\0'; | |
3417 | if (cp && | |
cae5b340 AX |
3418 | !zfs_dataset_exists(hdl, name, ZFS_TYPE_DATASET)) { |
3419 | char suffix[ZFS_MAX_DATASET_NAME_LEN]; | |
3420 | (void) strcpy(suffix, strrchr(destsnap, '/')); | |
3421 | if (guid_to_name(hdl, name, parent_snapguid, | |
3422 | B_FALSE, destsnap) == 0) { | |
3423 | *strchr(destsnap, '@') = '\0'; | |
3424 | (void) strcat(destsnap, suffix); | |
34dc7c2f BB |
3425 | } |
3426 | } | |
3427 | } else { | |
3428 | /* | |
3429 | * if the fs does not exist, look for it based on the | |
3430 | * fromsnap GUID | |
3431 | */ | |
3432 | (void) snprintf(errbuf, sizeof (errbuf), dgettext(TEXT_DOMAIN, | |
3433 | "cannot receive incremental stream")); | |
3434 | ||
cae5b340 AX |
3435 | (void) strcpy(name, destsnap); |
3436 | *strchr(name, '@') = '\0'; | |
34dc7c2f | 3437 | |
428870ff BB |
3438 | /* |
3439 | * If the exact receive path was specified and this is the | |
3440 | * topmost path in the stream, then if the fs does not exist we | |
3441 | * should look no further. | |
3442 | */ | |
330d06f9 | 3443 | if ((flags->isprefix || (*(chopprefix = drrb->drr_toname + |
428870ff | 3444 | strlen(sendfs)) != '\0' && *chopprefix != '@')) && |
cae5b340 AX |
3445 | !zfs_dataset_exists(hdl, name, ZFS_TYPE_DATASET)) { |
3446 | char snap[ZFS_MAX_DATASET_NAME_LEN]; | |
3447 | (void) strcpy(snap, strchr(destsnap, '@')); | |
3448 | if (guid_to_name(hdl, name, drrb->drr_fromguid, | |
3449 | B_FALSE, destsnap) == 0) { | |
3450 | *strchr(destsnap, '@') = '\0'; | |
3451 | (void) strcat(destsnap, snap); | |
34dc7c2f BB |
3452 | } |
3453 | } | |
3454 | } | |
3455 | ||
cae5b340 AX |
3456 | (void) strcpy(name, destsnap); |
3457 | *strchr(name, '@') = '\0'; | |
34dc7c2f | 3458 | |
cae5b340 AX |
3459 | if (zfs_dataset_exists(hdl, name, ZFS_TYPE_DATASET)) { |
3460 | zfs_cmd_t zc = {"\0"}; | |
34dc7c2f | 3461 | zfs_handle_t *zhp; |
428870ff | 3462 | |
cae5b340 AX |
3463 | (void) strcpy(zc.zc_name, name); |
3464 | ||
34dc7c2f | 3465 | /* |
cae5b340 AX |
3466 | * Destination fs exists. It must be one of these cases: |
3467 | * - an incremental send stream | |
3468 | * - the stream specifies a new fs (full stream or clone) | |
3469 | * and they want us to blow away the existing fs (and | |
3470 | * have therefore specified -F and removed any snapshots) | |
3471 | * - we are resuming a failed receive. | |
34dc7c2f | 3472 | */ |
34dc7c2f | 3473 | if (stream_wantsnewfs) { |
330d06f9 | 3474 | if (!flags->force) { |
34dc7c2f BB |
3475 | zfs_error_aux(hdl, dgettext(TEXT_DOMAIN, |
3476 | "destination '%s' exists\n" | |
cae5b340 AX |
3477 | "must specify -F to overwrite it"), name); |
3478 | err = zfs_error(hdl, EZFS_EXISTS, errbuf); | |
3479 | goto out; | |
34dc7c2f BB |
3480 | } |
3481 | if (ioctl(hdl->libzfs_fd, ZFS_IOC_SNAPSHOT_LIST_NEXT, | |
3482 | &zc) == 0) { | |
34dc7c2f BB |
3483 | zfs_error_aux(hdl, dgettext(TEXT_DOMAIN, |
3484 | "destination has snapshots (eg. %s)\n" | |
3485 | "must destroy them to overwrite it"), | |
cae5b340 AX |
3486 | name); |
3487 | err = zfs_error(hdl, EZFS_EXISTS, errbuf); | |
3488 | goto out; | |
34dc7c2f BB |
3489 | } |
3490 | } | |
3491 | ||
cae5b340 | 3492 | if ((zhp = zfs_open(hdl, name, |
34dc7c2f | 3493 | ZFS_TYPE_FILESYSTEM | ZFS_TYPE_VOLUME)) == NULL) { |
cae5b340 AX |
3494 | err = -1; |
3495 | goto out; | |
34dc7c2f BB |
3496 | } |
3497 | ||
3498 | if (stream_wantsnewfs && | |
3499 | zhp->zfs_dmustats.dds_origin[0]) { | |
34dc7c2f BB |
3500 | zfs_close(zhp); |
3501 | zfs_error_aux(hdl, dgettext(TEXT_DOMAIN, | |
3502 | "destination '%s' is a clone\n" | |
cae5b340 AX |
3503 | "must destroy it to overwrite it"), name); |
3504 | err = zfs_error(hdl, EZFS_EXISTS, errbuf); | |
3505 | goto out; | |
34dc7c2f BB |
3506 | } |
3507 | ||
330d06f9 | 3508 | if (!flags->dryrun && zhp->zfs_type == ZFS_TYPE_FILESYSTEM && |
34dc7c2f BB |
3509 | stream_wantsnewfs) { |
3510 | /* We can't do online recv in this case */ | |
b128c09f | 3511 | clp = changelist_gather(zhp, ZFS_PROP_NAME, 0, 0); |
34dc7c2f | 3512 | if (clp == NULL) { |
45d1cae3 | 3513 | zfs_close(zhp); |
cae5b340 AX |
3514 | err = -1; |
3515 | goto out; | |
34dc7c2f BB |
3516 | } |
3517 | if (changelist_prefix(clp) != 0) { | |
3518 | changelist_free(clp); | |
45d1cae3 | 3519 | zfs_close(zhp); |
cae5b340 AX |
3520 | err = -1; |
3521 | goto out; | |
34dc7c2f BB |
3522 | } |
3523 | } | |
cae5b340 AX |
3524 | |
3525 | /* | |
3526 | * If we are resuming a newfs, set newfs here so that we will | |
3527 | * mount it if the recv succeeds this time. We can tell | |
3528 | * that it was a newfs on the first recv because the fs | |
3529 | * itself will be inconsistent (if the fs existed when we | |
3530 | * did the first recv, we would have received it into | |
3531 | * .../%recv). | |
3532 | */ | |
3533 | if (resuming && zfs_prop_get_int(zhp, ZFS_PROP_INCONSISTENT)) | |
3534 | newfs = B_TRUE; | |
3535 | ||
3536 | /* we want to know if we're zoned when validating -o|-x props */ | |
3537 | zoned = zfs_prop_get_int(zhp, ZFS_PROP_ZONED); | |
3538 | ||
42f7b73b AX |
3539 | /* may need this info later, get it now we have zhp around */ |
3540 | if (zfs_prop_get(zhp, ZFS_PROP_RECEIVE_RESUME_TOKEN, NULL, 0, | |
3541 | NULL, NULL, 0, B_TRUE) == 0) | |
3542 | hastoken = B_TRUE; | |
3543 | ||
cae5b340 AX |
3544 | /* gather existing properties on destination */ |
3545 | origprops = fnvlist_alloc(); | |
3546 | fnvlist_merge(origprops, zhp->zfs_props); | |
3547 | fnvlist_merge(origprops, zhp->zfs_user_props); | |
3548 | ||
34dc7c2f BB |
3549 | zfs_close(zhp); |
3550 | } else { | |
3551 | /* | |
3552 | * Destination filesystem does not exist. Therefore we better | |
3553 | * be creating a new filesystem (either from a full backup, or | |
3554 | * a clone). It would therefore be invalid if the user | |
3555 | * specified only the pool name (i.e. if the destination name | |
3556 | * contained no slash character). | |
3557 | */ | |
cae5b340 AX |
3558 | cp = strrchr(name, '/'); |
3559 | ||
3560 | if (!stream_wantsnewfs || cp == NULL) { | |
34dc7c2f | 3561 | zfs_error_aux(hdl, dgettext(TEXT_DOMAIN, |
cae5b340 AX |
3562 | "destination '%s' does not exist"), name); |
3563 | err = zfs_error(hdl, EZFS_NOENT, errbuf); | |
3564 | goto out; | |
34dc7c2f BB |
3565 | } |
3566 | ||
3567 | /* | |
3568 | * Trim off the final dataset component so we perform the | |
3569 | * recvbackup ioctl to the filesystems's parent. | |
3570 | */ | |
3571 | *cp = '\0'; | |
3572 | ||
330d06f9 | 3573 | if (flags->isprefix && !flags->istail && !flags->dryrun && |
cae5b340 AX |
3574 | create_parents(hdl, destsnap, strlen(tosnap)) != 0) { |
3575 | err = zfs_error(hdl, EZFS_BADRESTORE, errbuf); | |
3576 | goto out; | |
34dc7c2f BB |
3577 | } |
3578 | ||
3579 | newfs = B_TRUE; | |
a07c8b41 | 3580 | *cp = '/'; |
34dc7c2f BB |
3581 | } |
3582 | ||
330d06f9 | 3583 | if (flags->verbose) { |
34dc7c2f | 3584 | (void) printf("%s %s stream of %s into %s\n", |
330d06f9 | 3585 | flags->dryrun ? "would receive" : "receiving", |
34dc7c2f | 3586 | drrb->drr_fromguid ? "incremental" : "full", |
cae5b340 | 3587 | drrb->drr_toname, destsnap); |
34dc7c2f BB |
3588 | (void) fflush(stdout); |
3589 | } | |
3590 | ||
330d06f9 | 3591 | if (flags->dryrun) { |
cae5b340 AX |
3592 | err = recv_skip(hdl, infd, flags->byteswap); |
3593 | goto out; | |
34dc7c2f BB |
3594 | } |
3595 | ||
a07c8b41 | 3596 | if (top_zfs && (*top_zfs == NULL || strcmp(*top_zfs, name) == 0)) |
047218e2 | 3597 | toplevel = B_TRUE; |
cae5b340 AX |
3598 | if (drrb->drr_type == DMU_OST_ZVOL) { |
3599 | type = ZFS_TYPE_VOLUME; | |
3600 | } else if (drrb->drr_type == DMU_OST_ZFS) { | |
3601 | type = ZFS_TYPE_FILESYSTEM; | |
3602 | } else { | |
3603 | zfs_error_aux(hdl, dgettext(TEXT_DOMAIN, | |
3604 | "invalid record type: 0x%d"), drrb->drr_type); | |
3605 | err = zfs_error(hdl, EZFS_BADSTREAM, errbuf); | |
3606 | goto out; | |
3607 | } | |
3608 | if ((err = zfs_setup_cmdline_props(hdl, type, zoned, recursive, | |
3609 | toplevel, rcvprops, cmdprops, origprops, &oxprops, errbuf)) != 0) | |
3610 | goto out; | |
428870ff | 3611 | |
cae5b340 AX |
3612 | err = ioctl_err = lzc_receive_with_cmdprops(destsnap, rcvprops, oxprops, |
3613 | origin, flags->force, flags->resumable, infd, drr_noswap, | |
3614 | cleanup_fd, &read_bytes, &errflags, action_handlep, &prop_errors); | |
3615 | ioctl_errno = ioctl_err; | |
3616 | prop_errflags = errflags; | |
428870ff BB |
3617 | |
3618 | if (err == 0) { | |
428870ff BB |
3619 | nvpair_t *prop_err = NULL; |
3620 | ||
3621 | while ((prop_err = nvlist_next_nvpair(prop_errors, | |
3622 | prop_err)) != NULL) { | |
3623 | char tbuf[1024]; | |
3624 | zfs_prop_t prop; | |
3625 | int intval; | |
3626 | ||
3627 | prop = zfs_name_to_prop(nvpair_name(prop_err)); | |
3628 | (void) nvpair_value_int32(prop_err, &intval); | |
3629 | if (strcmp(nvpair_name(prop_err), | |
3630 | ZPROP_N_MORE_ERRORS) == 0) { | |
3631 | trunc_prop_errs(intval); | |
3632 | break; | |
cae5b340 AX |
3633 | } else if (snapname == NULL || finalsnap == NULL || |
3634 | strcmp(finalsnap, snapname) == 0 || | |
3635 | strcmp(nvpair_name(prop_err), | |
3636 | zfs_prop_to_name(ZFS_PROP_REFQUOTA)) != 0) { | |
3637 | /* | |
3638 | * Skip the special case of, for example, | |
3639 | * "refquota", errors on intermediate | |
3640 | * snapshots leading up to a final one. | |
3641 | * That's why we have all of the checks above. | |
3642 | * | |
3643 | * See zfs_ioctl.c's extract_delay_props() for | |
3644 | * a list of props which can fail on | |
3645 | * intermediate snapshots, but shouldn't | |
3646 | * affect the overall receive. | |
3647 | */ | |
428870ff BB |
3648 | (void) snprintf(tbuf, sizeof (tbuf), |
3649 | dgettext(TEXT_DOMAIN, | |
3650 | "cannot receive %s property on %s"), | |
cae5b340 | 3651 | nvpair_name(prop_err), name); |
428870ff BB |
3652 | zfs_setprop_error(hdl, prop, intval, tbuf); |
3653 | } | |
3654 | } | |
428870ff BB |
3655 | } |
3656 | ||
b128c09f | 3657 | if (err == 0 && snapprops_nvlist) { |
cae5b340 | 3658 | zfs_cmd_t zc = {"\0"}; |
b128c09f | 3659 | |
cae5b340 AX |
3660 | (void) strcpy(zc.zc_name, destsnap); |
3661 | zc.zc_cookie = B_TRUE; /* received */ | |
3662 | if (zcmd_write_src_nvlist(hdl, &zc, snapprops_nvlist) == 0) { | |
3663 | (void) zfs_ioctl(hdl, ZFS_IOC_SET_PROP, &zc); | |
3664 | zcmd_free_nvlists(&zc); | |
b128c09f BB |
3665 | } |
3666 | } | |
3667 | ||
428870ff | 3668 | if (err && (ioctl_errno == ENOENT || ioctl_errno == EEXIST)) { |
34dc7c2f BB |
3669 | /* |
3670 | * It may be that this snapshot already exists, | |
3671 | * in which case we want to consume & ignore it | |
3672 | * rather than failing. | |
3673 | */ | |
3674 | avl_tree_t *local_avl; | |
3675 | nvlist_t *local_nv, *fs; | |
cae5b340 | 3676 | cp = strchr(destsnap, '@'); |
34dc7c2f BB |
3677 | |
3678 | /* | |
3679 | * XXX Do this faster by just iterating over snaps in | |
3680 | * this fs. Also if zc_value does not exist, we will | |
3681 | * get a strange "does not exist" error message. | |
3682 | */ | |
3683 | *cp = '\0'; | |
cae5b340 AX |
3684 | if (gather_nvlist(hdl, destsnap, NULL, NULL, B_FALSE, |
3685 | B_FALSE, &local_nv, &local_avl) == 0) { | |
34dc7c2f BB |
3686 | *cp = '@'; |
3687 | fs = fsavl_find(local_avl, drrb->drr_toguid, NULL); | |
3688 | fsavl_destroy(local_avl); | |
3689 | nvlist_free(local_nv); | |
3690 | ||
3691 | if (fs != NULL) { | |
330d06f9 | 3692 | if (flags->verbose) { |
34dc7c2f | 3693 | (void) printf("snap %s already exists; " |
cae5b340 | 3694 | "ignoring\n", destsnap); |
34dc7c2f | 3695 | } |
428870ff | 3696 | err = ioctl_err = recv_skip(hdl, infd, |
330d06f9 | 3697 | flags->byteswap); |
34dc7c2f BB |
3698 | } |
3699 | } | |
3700 | *cp = '@'; | |
3701 | } | |
3702 | ||
34dc7c2f BB |
3703 | if (ioctl_err != 0) { |
3704 | switch (ioctl_errno) { | |
3705 | case ENODEV: | |
cae5b340 | 3706 | cp = strchr(destsnap, '@'); |
34dc7c2f BB |
3707 | *cp = '\0'; |
3708 | zfs_error_aux(hdl, dgettext(TEXT_DOMAIN, | |
3709 | "most recent snapshot of %s does not\n" | |
cae5b340 | 3710 | "match incremental source"), destsnap); |
34dc7c2f BB |
3711 | (void) zfs_error(hdl, EZFS_BADRESTORE, errbuf); |
3712 | *cp = '@'; | |
3713 | break; | |
3714 | case ETXTBSY: | |
3715 | zfs_error_aux(hdl, dgettext(TEXT_DOMAIN, | |
3716 | "destination %s has been modified\n" | |
cae5b340 | 3717 | "since most recent snapshot"), name); |
34dc7c2f BB |
3718 | (void) zfs_error(hdl, EZFS_BADRESTORE, errbuf); |
3719 | break; | |
3720 | case EEXIST: | |
cae5b340 | 3721 | cp = strchr(destsnap, '@'); |
34dc7c2f BB |
3722 | if (newfs) { |
3723 | /* it's the containing fs that exists */ | |
3724 | *cp = '\0'; | |
3725 | } | |
3726 | zfs_error_aux(hdl, dgettext(TEXT_DOMAIN, | |
3727 | "destination already exists")); | |
3728 | (void) zfs_error_fmt(hdl, EZFS_EXISTS, | |
3729 | dgettext(TEXT_DOMAIN, "cannot restore to %s"), | |
cae5b340 | 3730 | destsnap); |
34dc7c2f BB |
3731 | *cp = '@'; |
3732 | break; | |
3733 | case EINVAL: | |
cae5b340 AX |
3734 | if (flags->resumable) |
3735 | zfs_error_aux(hdl, dgettext(TEXT_DOMAIN, | |
3736 | "kernel modules must be upgraded to " | |
3737 | "receive this stream.")); | |
34dc7c2f BB |
3738 | (void) zfs_error(hdl, EZFS_BADSTREAM, errbuf); |
3739 | break; | |
3740 | case ECKSUM: | |
cae5b340 | 3741 | recv_ecksum_set_aux(hdl, destsnap, flags->resumable); |
34dc7c2f BB |
3742 | (void) zfs_error(hdl, EZFS_BADSTREAM, errbuf); |
3743 | break; | |
428870ff BB |
3744 | case ENOTSUP: |
3745 | zfs_error_aux(hdl, dgettext(TEXT_DOMAIN, | |
3746 | "pool must be upgraded to receive this stream.")); | |
3747 | (void) zfs_error(hdl, EZFS_BADVERSION, errbuf); | |
3748 | break; | |
3749 | case EDQUOT: | |
3750 | zfs_error_aux(hdl, dgettext(TEXT_DOMAIN, | |
42f7b73b | 3751 | "destination %s space quota exceeded."), name); |
330d06f9 | 3752 | (void) zfs_error(hdl, EZFS_NOSPC, errbuf); |
428870ff | 3753 | break; |
42f7b73b AX |
3754 | case EBUSY: |
3755 | if (hastoken) { | |
3756 | zfs_error_aux(hdl, dgettext(TEXT_DOMAIN, | |
3757 | "destination %s contains " | |
3758 | "partially-complete state from " | |
3759 | "\"zfs receive -s\"."), name); | |
3760 | (void) zfs_error(hdl, EZFS_BUSY, errbuf); | |
3761 | break; | |
3762 | } | |
3763 | /* fallthru */ | |
34dc7c2f BB |
3764 | default: |
3765 | (void) zfs_standard_error(hdl, ioctl_errno, errbuf); | |
3766 | } | |
3767 | } | |
3768 | ||
3769 | /* | |
428870ff BB |
3770 | * Mount the target filesystem (if created). Also mount any |
3771 | * children of the target filesystem if we did a replication | |
3772 | * receive (indicated by stream_avl being non-NULL). | |
34dc7c2f | 3773 | */ |
cae5b340 | 3774 | cp = strchr(destsnap, '@'); |
34dc7c2f BB |
3775 | if (cp && (ioctl_err == 0 || !newfs)) { |
3776 | zfs_handle_t *h; | |
3777 | ||
3778 | *cp = '\0'; | |
cae5b340 | 3779 | h = zfs_open(hdl, destsnap, |
34dc7c2f | 3780 | ZFS_TYPE_FILESYSTEM | ZFS_TYPE_VOLUME); |
34dc7c2f BB |
3781 | if (h != NULL) { |
3782 | if (h->zfs_type == ZFS_TYPE_VOLUME) { | |
b128c09f | 3783 | *cp = '@'; |
45d1cae3 | 3784 | } else if (newfs || stream_avl) { |
b128c09f BB |
3785 | /* |
3786 | * Track the first/top of hierarchy fs, | |
3787 | * for mounting and sharing later. | |
3788 | */ | |
3789 | if (top_zfs && *top_zfs == NULL) | |
cae5b340 | 3790 | *top_zfs = zfs_strdup(hdl, destsnap); |
34dc7c2f BB |
3791 | } |
3792 | zfs_close(h); | |
3793 | } | |
b128c09f | 3794 | *cp = '@'; |
34dc7c2f BB |
3795 | } |
3796 | ||
3797 | if (clp) { | |
cae5b340 AX |
3798 | if (!flags->nomount) |
3799 | err |= changelist_postfix(clp); | |
34dc7c2f BB |
3800 | changelist_free(clp); |
3801 | } | |
3802 | ||
428870ff BB |
3803 | if (prop_errflags & ZPROP_ERR_NOCLEAR) { |
3804 | (void) fprintf(stderr, dgettext(TEXT_DOMAIN, "Warning: " | |
cae5b340 | 3805 | "failed to clear unreceived properties on %s"), name); |
428870ff BB |
3806 | (void) fprintf(stderr, "\n"); |
3807 | } | |
3808 | if (prop_errflags & ZPROP_ERR_NORESTORE) { | |
3809 | (void) fprintf(stderr, dgettext(TEXT_DOMAIN, "Warning: " | |
cae5b340 | 3810 | "failed to restore original properties on %s"), name); |
428870ff BB |
3811 | (void) fprintf(stderr, "\n"); |
3812 | } | |
3813 | ||
cae5b340 AX |
3814 | if (err || ioctl_err) { |
3815 | err = -1; | |
3816 | goto out; | |
3817 | } | |
572e2857 | 3818 | |
330d06f9 | 3819 | if (flags->verbose) { |
34dc7c2f BB |
3820 | char buf1[64]; |
3821 | char buf2[64]; | |
cae5b340 | 3822 | uint64_t bytes = read_bytes; |
34dc7c2f BB |
3823 | time_t delta = time(NULL) - begin_time; |
3824 | if (delta == 0) | |
3825 | delta = 1; | |
cae5b340 AX |
3826 | zfs_nicebytes(bytes, buf1, sizeof (buf1)); |
3827 | zfs_nicebytes(bytes/delta, buf2, sizeof (buf1)); | |
34dc7c2f | 3828 | |
cae5b340 | 3829 | (void) printf("received %s stream in %lu seconds (%s/sec)\n", |
34dc7c2f BB |
3830 | buf1, delta, buf2); |
3831 | } | |
3832 | ||
cae5b340 AX |
3833 | err = 0; |
3834 | out: | |
3835 | if (prop_errors != NULL) | |
3836 | nvlist_free(prop_errors); | |
3837 | ||
3838 | if (newprops) | |
3839 | nvlist_free(rcvprops); | |
3840 | ||
3841 | nvlist_free(oxprops); | |
3842 | nvlist_free(origprops); | |
3843 | ||
3844 | return (err); | |
3845 | } | |
3846 | ||
3847 | /* | |
3848 | * Check properties we were asked to override (both -o|-x) | |
3849 | */ | |
3850 | static boolean_t | |
3851 | zfs_receive_checkprops(libzfs_handle_t *hdl, nvlist_t *props, | |
3852 | const char *errbuf) | |
3853 | { | |
3854 | nvpair_t *nvp; | |
3855 | zfs_prop_t prop; | |
3856 | const char *name; | |
3857 | ||
3858 | nvp = NULL; | |
3859 | while ((nvp = nvlist_next_nvpair(props, nvp)) != NULL) { | |
3860 | name = nvpair_name(nvp); | |
3861 | prop = zfs_name_to_prop(name); | |
3862 | ||
3863 | if (prop == ZPROP_INVAL) { | |
3864 | if (!zfs_prop_user(name)) { | |
3865 | zfs_error_aux(hdl, dgettext(TEXT_DOMAIN, | |
3866 | "invalid property '%s'"), name); | |
3867 | return (B_FALSE); | |
3868 | } | |
3869 | continue; | |
3870 | } | |
3871 | /* | |
3872 | * "origin" is readonly but is used to receive datasets as | |
3873 | * clones so we don't raise an error here | |
3874 | */ | |
3875 | if (prop == ZFS_PROP_ORIGIN) | |
3876 | continue; | |
3877 | ||
3878 | /* | |
3879 | * cannot override readonly, set-once and other specific | |
3880 | * settable properties | |
3881 | */ | |
3882 | if (zfs_prop_readonly(prop) || prop == ZFS_PROP_VERSION || | |
3883 | prop == ZFS_PROP_VOLSIZE) { | |
3884 | zfs_error_aux(hdl, dgettext(TEXT_DOMAIN, | |
3885 | "invalid property '%s'"), name); | |
3886 | return (B_FALSE); | |
3887 | } | |
3888 | } | |
3889 | ||
3890 | return (B_TRUE); | |
34dc7c2f BB |
3891 | } |
3892 | ||
b128c09f | 3893 | static int |
cae5b340 AX |
3894 | zfs_receive_impl(libzfs_handle_t *hdl, const char *tosnap, |
3895 | const char *originsnap, recvflags_t *flags, int infd, const char *sendfs, | |
3896 | nvlist_t *stream_nv, avl_tree_t *stream_avl, char **top_zfs, int cleanup_fd, | |
3897 | uint64_t *action_handlep, const char *finalsnap, nvlist_t *cmdprops) | |
34dc7c2f BB |
3898 | { |
3899 | int err; | |
3900 | dmu_replay_record_t drr, drr_noswap; | |
3901 | struct drr_begin *drrb = &drr.drr_u.drr_begin; | |
3902 | char errbuf[1024]; | |
2598c001 | 3903 | zio_cksum_t zcksum = { { 0 } }; |
428870ff BB |
3904 | uint64_t featureflags; |
3905 | int hdrtype; | |
34dc7c2f BB |
3906 | |
3907 | (void) snprintf(errbuf, sizeof (errbuf), dgettext(TEXT_DOMAIN, | |
3908 | "cannot receive")); | |
3909 | ||
cae5b340 AX |
3910 | /* check cmdline props, raise an error if they cannot be received */ |
3911 | if (!zfs_receive_checkprops(hdl, cmdprops, errbuf)) { | |
3912 | return (zfs_error(hdl, EZFS_BADPROP, errbuf)); | |
3913 | } | |
3914 | ||
330d06f9 | 3915 | if (flags->isprefix && |
34dc7c2f BB |
3916 | !zfs_dataset_exists(hdl, tosnap, ZFS_TYPE_DATASET)) { |
3917 | zfs_error_aux(hdl, dgettext(TEXT_DOMAIN, "specified fs " | |
3918 | "(%s) does not exist"), tosnap); | |
3919 | return (zfs_error(hdl, EZFS_NOENT, errbuf)); | |
3920 | } | |
cae5b340 AX |
3921 | if (originsnap && |
3922 | !zfs_dataset_exists(hdl, originsnap, ZFS_TYPE_DATASET)) { | |
3923 | zfs_error_aux(hdl, dgettext(TEXT_DOMAIN, "specified origin fs " | |
3924 | "(%s) does not exist"), originsnap); | |
3925 | return (zfs_error(hdl, EZFS_NOENT, errbuf)); | |
3926 | } | |
34dc7c2f BB |
3927 | |
3928 | /* read in the BEGIN record */ | |
3929 | if (0 != (err = recv_read(hdl, infd, &drr, sizeof (drr), B_FALSE, | |
3930 | &zcksum))) | |
3931 | return (err); | |
3932 | ||
3933 | if (drr.drr_type == DRR_END || drr.drr_type == BSWAP_32(DRR_END)) { | |
3934 | /* It's the double end record at the end of a package */ | |
3935 | return (ENODATA); | |
3936 | } | |
3937 | ||
3938 | /* the kernel needs the non-byteswapped begin record */ | |
3939 | drr_noswap = drr; | |
3940 | ||
330d06f9 | 3941 | flags->byteswap = B_FALSE; |
34dc7c2f BB |
3942 | if (drrb->drr_magic == BSWAP_64(DMU_BACKUP_MAGIC)) { |
3943 | /* | |
3944 | * We computed the checksum in the wrong byteorder in | |
3945 | * recv_read() above; do it again correctly. | |
3946 | */ | |
3947 | bzero(&zcksum, sizeof (zio_cksum_t)); | |
3948 | fletcher_4_incremental_byteswap(&drr, sizeof (drr), &zcksum); | |
330d06f9 | 3949 | flags->byteswap = B_TRUE; |
34dc7c2f BB |
3950 | |
3951 | drr.drr_type = BSWAP_32(drr.drr_type); | |
3952 | drr.drr_payloadlen = BSWAP_32(drr.drr_payloadlen); | |
3953 | drrb->drr_magic = BSWAP_64(drrb->drr_magic); | |
428870ff | 3954 | drrb->drr_versioninfo = BSWAP_64(drrb->drr_versioninfo); |
34dc7c2f BB |
3955 | drrb->drr_creation_time = BSWAP_64(drrb->drr_creation_time); |
3956 | drrb->drr_type = BSWAP_32(drrb->drr_type); | |
3957 | drrb->drr_flags = BSWAP_32(drrb->drr_flags); | |
3958 | drrb->drr_toguid = BSWAP_64(drrb->drr_toguid); | |
3959 | drrb->drr_fromguid = BSWAP_64(drrb->drr_fromguid); | |
3960 | } | |
3961 | ||
3962 | if (drrb->drr_magic != DMU_BACKUP_MAGIC || drr.drr_type != DRR_BEGIN) { | |
3963 | zfs_error_aux(hdl, dgettext(TEXT_DOMAIN, "invalid " | |
3964 | "stream (bad magic number)")); | |
3965 | return (zfs_error(hdl, EZFS_BADSTREAM, errbuf)); | |
3966 | } | |
3967 | ||
428870ff BB |
3968 | featureflags = DMU_GET_FEATUREFLAGS(drrb->drr_versioninfo); |
3969 | hdrtype = DMU_GET_STREAM_HDRTYPE(drrb->drr_versioninfo); | |
3970 | ||
3971 | if (!DMU_STREAM_SUPPORTED(featureflags) || | |
3972 | (hdrtype != DMU_SUBSTREAM && hdrtype != DMU_COMPOUNDSTREAM)) { | |
3973 | zfs_error_aux(hdl, dgettext(TEXT_DOMAIN, | |
3974 | "stream has unsupported feature, feature flags = %lx"), | |
3975 | featureflags); | |
3976 | return (zfs_error(hdl, EZFS_BADSTREAM, errbuf)); | |
3977 | } | |
3978 | ||
34dc7c2f BB |
3979 | if (strchr(drrb->drr_toname, '@') == NULL) { |
3980 | zfs_error_aux(hdl, dgettext(TEXT_DOMAIN, "invalid " | |
3981 | "stream (bad snapshot name)")); | |
3982 | return (zfs_error(hdl, EZFS_BADSTREAM, errbuf)); | |
3983 | } | |
3984 | ||
428870ff | 3985 | if (DMU_GET_STREAM_HDRTYPE(drrb->drr_versioninfo) == DMU_SUBSTREAM) { |
cae5b340 | 3986 | char nonpackage_sendfs[ZFS_MAX_DATASET_NAME_LEN]; |
428870ff BB |
3987 | if (sendfs == NULL) { |
3988 | /* | |
3989 | * We were not called from zfs_receive_package(). Get | |
3990 | * the fs specified by 'zfs send'. | |
3991 | */ | |
3992 | char *cp; | |
3993 | (void) strlcpy(nonpackage_sendfs, | |
cae5b340 AX |
3994 | drr.drr_u.drr_begin.drr_toname, |
3995 | sizeof (nonpackage_sendfs)); | |
428870ff BB |
3996 | if ((cp = strchr(nonpackage_sendfs, '@')) != NULL) |
3997 | *cp = '\0'; | |
3998 | sendfs = nonpackage_sendfs; | |
cae5b340 | 3999 | VERIFY(finalsnap == NULL); |
428870ff | 4000 | } |
cae5b340 AX |
4001 | return (zfs_receive_one(hdl, infd, tosnap, originsnap, flags, |
4002 | &drr, &drr_noswap, sendfs, stream_nv, stream_avl, top_zfs, | |
4003 | cleanup_fd, action_handlep, finalsnap, cmdprops)); | |
428870ff BB |
4004 | } else { |
4005 | assert(DMU_GET_STREAM_HDRTYPE(drrb->drr_versioninfo) == | |
4006 | DMU_COMPOUNDSTREAM); | |
cae5b340 AX |
4007 | return (zfs_receive_package(hdl, infd, tosnap, flags, &drr, |
4008 | &zcksum, top_zfs, cleanup_fd, action_handlep, cmdprops)); | |
34dc7c2f BB |
4009 | } |
4010 | } | |
b128c09f BB |
4011 | |
4012 | /* | |
4013 | * Restores a backup of tosnap from the file descriptor specified by infd. | |
4014 | * Return 0 on total success, -2 if some things couldn't be | |
4015 | * destroyed/renamed/promoted, -1 if some things couldn't be received. | |
cae5b340 AX |
4016 | * (-1 will override -2, if -1 and the resumable flag was specified the |
4017 | * transfer can be resumed if the sending side supports it). | |
b128c09f BB |
4018 | */ |
4019 | int | |
cae5b340 AX |
4020 | zfs_receive(libzfs_handle_t *hdl, const char *tosnap, nvlist_t *props, |
4021 | recvflags_t *flags, int infd, avl_tree_t *stream_avl) | |
b128c09f BB |
4022 | { |
4023 | char *top_zfs = NULL; | |
4024 | int err; | |
572e2857 BB |
4025 | int cleanup_fd; |
4026 | uint64_t action_handle = 0; | |
ea04106b | 4027 | struct stat sb; |
cae5b340 | 4028 | char *originsnap = NULL; |
ea04106b AX |
4029 | |
4030 | /* | |
4031 | * The only way fstat can fail is if we do not have a valid file | |
4032 | * descriptor. | |
4033 | */ | |
4034 | if (fstat(infd, &sb) == -1) { | |
4035 | perror("fstat"); | |
4036 | return (-2); | |
4037 | } | |
4038 | ||
4039 | #ifdef __linux__ | |
4040 | #ifndef F_SETPIPE_SZ | |
4041 | #define F_SETPIPE_SZ (F_SETLEASE + 7) | |
4042 | #endif /* F_SETPIPE_SZ */ | |
4043 | ||
4044 | #ifndef F_GETPIPE_SZ | |
4045 | #define F_GETPIPE_SZ (F_GETLEASE + 7) | |
4046 | #endif /* F_GETPIPE_SZ */ | |
4047 | ||
4048 | /* | |
4049 | * It is not uncommon for gigabytes to be processed in zfs receive. | |
4050 | * Speculatively increase the buffer size via Linux-specific fcntl() | |
4051 | * call. | |
4052 | */ | |
4053 | if (S_ISFIFO(sb.st_mode)) { | |
4054 | FILE *procf = fopen("/proc/sys/fs/pipe-max-size", "r"); | |
4055 | ||
4056 | if (procf != NULL) { | |
4057 | unsigned long max_psize; | |
4058 | long cur_psize; | |
4059 | if (fscanf(procf, "%lu", &max_psize) > 0) { | |
4060 | cur_psize = fcntl(infd, F_GETPIPE_SZ); | |
4061 | if (cur_psize > 0 && | |
4062 | max_psize > (unsigned long) cur_psize) | |
4063 | (void) fcntl(infd, F_SETPIPE_SZ, | |
4064 | max_psize); | |
4065 | } | |
4066 | fclose(procf); | |
4067 | } | |
4068 | } | |
4069 | #endif /* __linux__ */ | |
572e2857 | 4070 | |
cae5b340 AX |
4071 | if (props) { |
4072 | err = nvlist_lookup_string(props, "origin", &originsnap); | |
4073 | if (err && err != ENOENT) | |
4074 | return (err); | |
4075 | } | |
4076 | ||
325f0235 | 4077 | cleanup_fd = open(ZFS_DEV, O_RDWR); |
572e2857 | 4078 | VERIFY(cleanup_fd >= 0); |
b128c09f | 4079 | |
cae5b340 AX |
4080 | err = zfs_receive_impl(hdl, tosnap, originsnap, flags, infd, NULL, NULL, |
4081 | stream_avl, &top_zfs, cleanup_fd, &action_handle, NULL, props); | |
572e2857 BB |
4082 | |
4083 | VERIFY(0 == close(cleanup_fd)); | |
b128c09f | 4084 | |
330d06f9 | 4085 | if (err == 0 && !flags->nomount && top_zfs) { |
cae5b340 AX |
4086 | zfs_handle_t *zhp = NULL; |
4087 | prop_changelist_t *clp = NULL; | |
b128c09f BB |
4088 | |
4089 | zhp = zfs_open(hdl, top_zfs, ZFS_TYPE_FILESYSTEM); | |
4090 | if (zhp != NULL) { | |
4091 | clp = changelist_gather(zhp, ZFS_PROP_MOUNTPOINT, | |
4092 | CL_GATHER_MOUNT_ALWAYS, 0); | |
4093 | zfs_close(zhp); | |
4094 | if (clp != NULL) { | |
4095 | /* mount and share received datasets */ | |
4096 | err = changelist_postfix(clp); | |
4097 | changelist_free(clp); | |
4098 | } | |
4099 | } | |
4100 | if (zhp == NULL || clp == NULL || err) | |
4101 | err = -1; | |
4102 | } | |
4103 | if (top_zfs) | |
4104 | free(top_zfs); | |
4105 | ||
4106 | return (err); | |
4107 | } |