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34dc7c2f BB |
1 | /* |
2 | * CDDL HEADER START | |
3 | * | |
4 | * The contents of this file are subject to the terms of the | |
5 | * Common Development and Distribution License (the "License"). | |
6 | * You may not use this file except in compliance with the License. | |
7 | * | |
8 | * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE | |
9 | * or http://www.opensolaris.org/os/licensing. | |
10 | * See the License for the specific language governing permissions | |
11 | * and limitations under the License. | |
12 | * | |
13 | * When distributing Covered Code, include this CDDL HEADER in each | |
14 | * file and include the License file at usr/src/OPENSOLARIS.LICENSE. | |
15 | * If applicable, add the following below this CDDL HEADER, with the | |
16 | * fields enclosed by brackets "[]" replaced with your own identifying | |
17 | * information: Portions Copyright [yyyy] [name of copyright owner] | |
18 | * | |
19 | * CDDL HEADER END | |
20 | */ | |
21 | ||
22 | /* | |
428870ff | 23 | * Copyright (c) 2005, 2010, Oracle and/or its affiliates. All rights reserved. |
e956d651 | 24 | * Copyright (c) 2012 by Delphix. All rights reserved. |
0cee2406 | 25 | * Copyright (c) 2012 Pawel Jakub Dawidek <pawel@dawidek.net>. |
37abac6d | 26 | * Copyright (c) 2012, Joyent, Inc. All rights reserved. |
0cee2406 | 27 | * All rights reserved |
34dc7c2f BB |
28 | */ |
29 | ||
34dc7c2f BB |
30 | #include <assert.h> |
31 | #include <ctype.h> | |
32 | #include <errno.h> | |
34dc7c2f BB |
33 | #include <libintl.h> |
34 | #include <stdio.h> | |
35 | #include <stdlib.h> | |
36 | #include <strings.h> | |
37 | #include <unistd.h> | |
38 | #include <stddef.h> | |
39 | #include <fcntl.h> | |
40 | #include <sys/mount.h> | |
9b020fd9 BB |
41 | #include <sys/mntent.h> |
42 | #include <sys/mnttab.h> | |
43 | #include <sys/avl.h> | |
44 | #include <sys/debug.h> | |
45 | #include <stddef.h> | |
428870ff BB |
46 | #include <pthread.h> |
47 | #include <umem.h> | |
37abac6d | 48 | #include <time.h> |
34dc7c2f BB |
49 | |
50 | #include <libzfs.h> | |
51 | ||
52 | #include "zfs_namecheck.h" | |
53 | #include "zfs_prop.h" | |
428870ff | 54 | #include "zfs_fletcher.h" |
34dc7c2f | 55 | #include "libzfs_impl.h" |
428870ff BB |
56 | #include <sys/zio_checksum.h> |
57 | #include <sys/ddt.h> | |
1b9d8c34 | 58 | #include <sys/socket.h> |
34dc7c2f | 59 | |
428870ff BB |
60 | /* in libzfs_dataset.c */ |
61 | extern void zfs_setprop_error(libzfs_handle_t *, zfs_prop_t, int, char *); | |
34dc7c2f | 62 | |
330d06f9 | 63 | static int zfs_receive_impl(libzfs_handle_t *, const char *, recvflags_t *, |
572e2857 | 64 | int, const char *, nvlist_t *, avl_tree_t *, char **, int, uint64_t *); |
428870ff | 65 | |
2598c001 | 66 | static const zio_cksum_t zero_cksum = { { 0 } }; |
428870ff BB |
67 | |
68 | typedef struct dedup_arg { | |
69 | int inputfd; | |
70 | int outputfd; | |
71 | libzfs_handle_t *dedup_hdl; | |
72 | } dedup_arg_t; | |
73 | ||
37abac6d BP |
74 | typedef struct progress_arg { |
75 | zfs_handle_t *pa_zhp; | |
76 | int pa_fd; | |
77 | boolean_t pa_parsable; | |
78 | } progress_arg_t; | |
79 | ||
428870ff BB |
80 | typedef struct dataref { |
81 | uint64_t ref_guid; | |
82 | uint64_t ref_object; | |
83 | uint64_t ref_offset; | |
84 | } dataref_t; | |
85 | ||
86 | typedef struct dedup_entry { | |
87 | struct dedup_entry *dde_next; | |
88 | zio_cksum_t dde_chksum; | |
89 | uint64_t dde_prop; | |
90 | dataref_t dde_ref; | |
91 | } dedup_entry_t; | |
92 | ||
93 | #define MAX_DDT_PHYSMEM_PERCENT 20 | |
94 | #define SMALLEST_POSSIBLE_MAX_DDT_MB 128 | |
95 | ||
96 | typedef struct dedup_table { | |
97 | dedup_entry_t **dedup_hash_array; | |
98 | umem_cache_t *ddecache; | |
99 | uint64_t max_ddt_size; /* max dedup table size in bytes */ | |
100 | uint64_t cur_ddt_size; /* current dedup table size in bytes */ | |
101 | uint64_t ddt_count; | |
102 | int numhashbits; | |
103 | boolean_t ddt_full; | |
104 | } dedup_table_t; | |
105 | ||
106 | static int | |
107 | high_order_bit(uint64_t n) | |
108 | { | |
109 | int count; | |
110 | ||
111 | for (count = 0; n != 0; count++) | |
112 | n >>= 1; | |
113 | return (count); | |
114 | } | |
115 | ||
116 | static size_t | |
117 | ssread(void *buf, size_t len, FILE *stream) | |
118 | { | |
119 | size_t outlen; | |
120 | ||
121 | if ((outlen = fread(buf, len, 1, stream)) == 0) | |
122 | return (0); | |
123 | ||
124 | return (outlen); | |
125 | } | |
126 | ||
127 | static void | |
128 | ddt_hash_append(libzfs_handle_t *hdl, dedup_table_t *ddt, dedup_entry_t **ddepp, | |
129 | zio_cksum_t *cs, uint64_t prop, dataref_t *dr) | |
130 | { | |
131 | dedup_entry_t *dde; | |
132 | ||
133 | if (ddt->cur_ddt_size >= ddt->max_ddt_size) { | |
134 | if (ddt->ddt_full == B_FALSE) { | |
135 | zfs_error_aux(hdl, dgettext(TEXT_DOMAIN, | |
136 | "Dedup table full. Deduplication will continue " | |
137 | "with existing table entries")); | |
138 | ddt->ddt_full = B_TRUE; | |
139 | } | |
140 | return; | |
141 | } | |
142 | ||
143 | if ((dde = umem_cache_alloc(ddt->ddecache, UMEM_DEFAULT)) | |
144 | != NULL) { | |
145 | assert(*ddepp == NULL); | |
146 | dde->dde_next = NULL; | |
147 | dde->dde_chksum = *cs; | |
148 | dde->dde_prop = prop; | |
149 | dde->dde_ref = *dr; | |
150 | *ddepp = dde; | |
151 | ddt->cur_ddt_size += sizeof (dedup_entry_t); | |
152 | ddt->ddt_count++; | |
153 | } | |
154 | } | |
155 | ||
156 | /* | |
157 | * Using the specified dedup table, do a lookup for an entry with | |
158 | * the checksum cs. If found, return the block's reference info | |
159 | * in *dr. Otherwise, insert a new entry in the dedup table, using | |
160 | * the reference information specified by *dr. | |
161 | * | |
162 | * return value: true - entry was found | |
163 | * false - entry was not found | |
164 | */ | |
165 | static boolean_t | |
166 | ddt_update(libzfs_handle_t *hdl, dedup_table_t *ddt, zio_cksum_t *cs, | |
167 | uint64_t prop, dataref_t *dr) | |
168 | { | |
169 | uint32_t hashcode; | |
170 | dedup_entry_t **ddepp; | |
171 | ||
172 | hashcode = BF64_GET(cs->zc_word[0], 0, ddt->numhashbits); | |
173 | ||
174 | for (ddepp = &(ddt->dedup_hash_array[hashcode]); *ddepp != NULL; | |
175 | ddepp = &((*ddepp)->dde_next)) { | |
176 | if (ZIO_CHECKSUM_EQUAL(((*ddepp)->dde_chksum), *cs) && | |
177 | (*ddepp)->dde_prop == prop) { | |
178 | *dr = (*ddepp)->dde_ref; | |
179 | return (B_TRUE); | |
180 | } | |
181 | } | |
182 | ddt_hash_append(hdl, ddt, ddepp, cs, prop, dr); | |
183 | return (B_FALSE); | |
184 | } | |
185 | ||
186 | static int | |
187 | cksum_and_write(const void *buf, uint64_t len, zio_cksum_t *zc, int outfd) | |
188 | { | |
189 | fletcher_4_incremental_native(buf, len, zc); | |
190 | return (write(outfd, buf, len)); | |
191 | } | |
192 | ||
193 | /* | |
194 | * This function is started in a separate thread when the dedup option | |
195 | * has been requested. The main send thread determines the list of | |
196 | * snapshots to be included in the send stream and makes the ioctl calls | |
197 | * for each one. But instead of having the ioctl send the output to the | |
198 | * the output fd specified by the caller of zfs_send()), the | |
199 | * ioctl is told to direct the output to a pipe, which is read by the | |
200 | * alternate thread running THIS function. This function does the | |
201 | * dedup'ing by: | |
202 | * 1. building a dedup table (the DDT) | |
203 | * 2. doing checksums on each data block and inserting a record in the DDT | |
204 | * 3. looking for matching checksums, and | |
205 | * 4. sending a DRR_WRITE_BYREF record instead of a write record whenever | |
206 | * a duplicate block is found. | |
207 | * The output of this function then goes to the output fd requested | |
208 | * by the caller of zfs_send(). | |
209 | */ | |
210 | static void * | |
211 | cksummer(void *arg) | |
212 | { | |
213 | dedup_arg_t *dda = arg; | |
214 | char *buf = malloc(1<<20); | |
215 | dmu_replay_record_t thedrr; | |
216 | dmu_replay_record_t *drr = &thedrr; | |
217 | struct drr_begin *drrb = &thedrr.drr_u.drr_begin; | |
218 | struct drr_end *drre = &thedrr.drr_u.drr_end; | |
219 | struct drr_object *drro = &thedrr.drr_u.drr_object; | |
220 | struct drr_write *drrw = &thedrr.drr_u.drr_write; | |
221 | struct drr_spill *drrs = &thedrr.drr_u.drr_spill; | |
222 | FILE *ofp; | |
223 | int outfd; | |
224 | dmu_replay_record_t wbr_drr = {0}; | |
225 | struct drr_write_byref *wbr_drrr = &wbr_drr.drr_u.drr_write_byref; | |
226 | dedup_table_t ddt; | |
227 | zio_cksum_t stream_cksum; | |
228 | uint64_t physmem = sysconf(_SC_PHYS_PAGES) * sysconf(_SC_PAGESIZE); | |
229 | uint64_t numbuckets; | |
230 | ||
231 | ddt.max_ddt_size = | |
232 | MAX((physmem * MAX_DDT_PHYSMEM_PERCENT)/100, | |
233 | SMALLEST_POSSIBLE_MAX_DDT_MB<<20); | |
234 | ||
235 | numbuckets = ddt.max_ddt_size/(sizeof (dedup_entry_t)); | |
236 | ||
237 | /* | |
238 | * numbuckets must be a power of 2. Increase number to | |
239 | * a power of 2 if necessary. | |
240 | */ | |
241 | if (!ISP2(numbuckets)) | |
242 | numbuckets = 1 << high_order_bit(numbuckets); | |
243 | ||
244 | ddt.dedup_hash_array = calloc(numbuckets, sizeof (dedup_entry_t *)); | |
245 | ddt.ddecache = umem_cache_create("dde", sizeof (dedup_entry_t), 0, | |
246 | NULL, NULL, NULL, NULL, NULL, 0); | |
247 | ddt.cur_ddt_size = numbuckets * sizeof (dedup_entry_t *); | |
248 | ddt.numhashbits = high_order_bit(numbuckets) - 1; | |
249 | ddt.ddt_full = B_FALSE; | |
250 | ||
251 | /* Initialize the write-by-reference block. */ | |
252 | wbr_drr.drr_type = DRR_WRITE_BYREF; | |
253 | wbr_drr.drr_payloadlen = 0; | |
254 | ||
255 | outfd = dda->outputfd; | |
256 | ofp = fdopen(dda->inputfd, "r"); | |
257 | while (ssread(drr, sizeof (dmu_replay_record_t), ofp) != 0) { | |
258 | ||
259 | switch (drr->drr_type) { | |
260 | case DRR_BEGIN: | |
261 | { | |
262 | int fflags; | |
263 | ZIO_SET_CHECKSUM(&stream_cksum, 0, 0, 0, 0); | |
264 | ||
265 | /* set the DEDUP feature flag for this stream */ | |
266 | fflags = DMU_GET_FEATUREFLAGS(drrb->drr_versioninfo); | |
267 | fflags |= (DMU_BACKUP_FEATURE_DEDUP | | |
268 | DMU_BACKUP_FEATURE_DEDUPPROPS); | |
269 | DMU_SET_FEATUREFLAGS(drrb->drr_versioninfo, fflags); | |
270 | ||
271 | if (cksum_and_write(drr, sizeof (dmu_replay_record_t), | |
272 | &stream_cksum, outfd) == -1) | |
273 | goto out; | |
274 | if (DMU_GET_STREAM_HDRTYPE(drrb->drr_versioninfo) == | |
275 | DMU_COMPOUNDSTREAM && drr->drr_payloadlen != 0) { | |
276 | int sz = drr->drr_payloadlen; | |
277 | ||
278 | if (sz > 1<<20) { | |
279 | free(buf); | |
280 | buf = malloc(sz); | |
281 | } | |
282 | (void) ssread(buf, sz, ofp); | |
283 | if (ferror(stdin)) | |
284 | perror("fread"); | |
285 | if (cksum_and_write(buf, sz, &stream_cksum, | |
286 | outfd) == -1) | |
287 | goto out; | |
288 | } | |
289 | break; | |
290 | } | |
291 | ||
292 | case DRR_END: | |
293 | { | |
294 | /* use the recalculated checksum */ | |
295 | ZIO_SET_CHECKSUM(&drre->drr_checksum, | |
296 | stream_cksum.zc_word[0], stream_cksum.zc_word[1], | |
297 | stream_cksum.zc_word[2], stream_cksum.zc_word[3]); | |
298 | if ((write(outfd, drr, | |
299 | sizeof (dmu_replay_record_t))) == -1) | |
300 | goto out; | |
301 | break; | |
302 | } | |
303 | ||
304 | case DRR_OBJECT: | |
305 | { | |
306 | if (cksum_and_write(drr, sizeof (dmu_replay_record_t), | |
307 | &stream_cksum, outfd) == -1) | |
308 | goto out; | |
309 | if (drro->drr_bonuslen > 0) { | |
310 | (void) ssread(buf, | |
311 | P2ROUNDUP((uint64_t)drro->drr_bonuslen, 8), | |
312 | ofp); | |
313 | if (cksum_and_write(buf, | |
314 | P2ROUNDUP((uint64_t)drro->drr_bonuslen, 8), | |
315 | &stream_cksum, outfd) == -1) | |
316 | goto out; | |
317 | } | |
318 | break; | |
319 | } | |
320 | ||
321 | case DRR_SPILL: | |
322 | { | |
323 | if (cksum_and_write(drr, sizeof (dmu_replay_record_t), | |
324 | &stream_cksum, outfd) == -1) | |
325 | goto out; | |
326 | (void) ssread(buf, drrs->drr_length, ofp); | |
327 | if (cksum_and_write(buf, drrs->drr_length, | |
328 | &stream_cksum, outfd) == -1) | |
329 | goto out; | |
330 | break; | |
331 | } | |
332 | ||
333 | case DRR_FREEOBJECTS: | |
334 | { | |
335 | if (cksum_and_write(drr, sizeof (dmu_replay_record_t), | |
336 | &stream_cksum, outfd) == -1) | |
337 | goto out; | |
338 | break; | |
339 | } | |
340 | ||
341 | case DRR_WRITE: | |
342 | { | |
343 | dataref_t dataref; | |
344 | ||
345 | (void) ssread(buf, drrw->drr_length, ofp); | |
346 | ||
347 | /* | |
348 | * Use the existing checksum if it's dedup-capable, | |
349 | * else calculate a SHA256 checksum for it. | |
350 | */ | |
351 | ||
352 | if (ZIO_CHECKSUM_EQUAL(drrw->drr_key.ddk_cksum, | |
353 | zero_cksum) || | |
354 | !DRR_IS_DEDUP_CAPABLE(drrw->drr_checksumflags)) { | |
9c905c55 BB |
355 | zio_cksum_t tmpsha256; |
356 | ||
357 | zio_checksum_SHA256(buf, | |
358 | drrw->drr_length, &tmpsha256); | |
428870ff | 359 | |
428870ff BB |
360 | drrw->drr_key.ddk_cksum.zc_word[0] = |
361 | BE_64(tmpsha256.zc_word[0]); | |
362 | drrw->drr_key.ddk_cksum.zc_word[1] = | |
363 | BE_64(tmpsha256.zc_word[1]); | |
364 | drrw->drr_key.ddk_cksum.zc_word[2] = | |
365 | BE_64(tmpsha256.zc_word[2]); | |
366 | drrw->drr_key.ddk_cksum.zc_word[3] = | |
367 | BE_64(tmpsha256.zc_word[3]); | |
368 | drrw->drr_checksumtype = ZIO_CHECKSUM_SHA256; | |
369 | drrw->drr_checksumflags = DRR_CHECKSUM_DEDUP; | |
370 | } | |
371 | ||
372 | dataref.ref_guid = drrw->drr_toguid; | |
373 | dataref.ref_object = drrw->drr_object; | |
374 | dataref.ref_offset = drrw->drr_offset; | |
375 | ||
376 | if (ddt_update(dda->dedup_hdl, &ddt, | |
377 | &drrw->drr_key.ddk_cksum, drrw->drr_key.ddk_prop, | |
378 | &dataref)) { | |
379 | /* block already present in stream */ | |
380 | wbr_drrr->drr_object = drrw->drr_object; | |
381 | wbr_drrr->drr_offset = drrw->drr_offset; | |
382 | wbr_drrr->drr_length = drrw->drr_length; | |
383 | wbr_drrr->drr_toguid = drrw->drr_toguid; | |
384 | wbr_drrr->drr_refguid = dataref.ref_guid; | |
385 | wbr_drrr->drr_refobject = | |
386 | dataref.ref_object; | |
387 | wbr_drrr->drr_refoffset = | |
388 | dataref.ref_offset; | |
389 | ||
390 | wbr_drrr->drr_checksumtype = | |
391 | drrw->drr_checksumtype; | |
392 | wbr_drrr->drr_checksumflags = | |
393 | drrw->drr_checksumtype; | |
394 | wbr_drrr->drr_key.ddk_cksum = | |
395 | drrw->drr_key.ddk_cksum; | |
396 | wbr_drrr->drr_key.ddk_prop = | |
397 | drrw->drr_key.ddk_prop; | |
398 | ||
399 | if (cksum_and_write(&wbr_drr, | |
400 | sizeof (dmu_replay_record_t), &stream_cksum, | |
401 | outfd) == -1) | |
402 | goto out; | |
403 | } else { | |
404 | /* block not previously seen */ | |
405 | if (cksum_and_write(drr, | |
406 | sizeof (dmu_replay_record_t), &stream_cksum, | |
407 | outfd) == -1) | |
408 | goto out; | |
409 | if (cksum_and_write(buf, | |
410 | drrw->drr_length, | |
411 | &stream_cksum, outfd) == -1) | |
412 | goto out; | |
413 | } | |
414 | break; | |
415 | } | |
416 | ||
417 | case DRR_FREE: | |
418 | { | |
419 | if (cksum_and_write(drr, sizeof (dmu_replay_record_t), | |
420 | &stream_cksum, outfd) == -1) | |
421 | goto out; | |
422 | break; | |
423 | } | |
424 | ||
425 | default: | |
426 | (void) printf("INVALID record type 0x%x\n", | |
427 | drr->drr_type); | |
428 | /* should never happen, so assert */ | |
429 | assert(B_FALSE); | |
430 | } | |
431 | } | |
432 | out: | |
433 | umem_cache_destroy(ddt.ddecache); | |
434 | free(ddt.dedup_hash_array); | |
435 | free(buf); | |
436 | (void) fclose(ofp); | |
437 | ||
438 | return (NULL); | |
439 | } | |
b128c09f | 440 | |
34dc7c2f BB |
441 | /* |
442 | * Routines for dealing with the AVL tree of fs-nvlists | |
443 | */ | |
444 | typedef struct fsavl_node { | |
445 | avl_node_t fn_node; | |
446 | nvlist_t *fn_nvfs; | |
447 | char *fn_snapname; | |
448 | uint64_t fn_guid; | |
449 | } fsavl_node_t; | |
450 | ||
451 | static int | |
452 | fsavl_compare(const void *arg1, const void *arg2) | |
453 | { | |
454 | const fsavl_node_t *fn1 = arg1; | |
455 | const fsavl_node_t *fn2 = arg2; | |
456 | ||
457 | if (fn1->fn_guid > fn2->fn_guid) | |
458 | return (+1); | |
459 | else if (fn1->fn_guid < fn2->fn_guid) | |
460 | return (-1); | |
461 | else | |
462 | return (0); | |
463 | } | |
464 | ||
465 | /* | |
466 | * Given the GUID of a snapshot, find its containing filesystem and | |
467 | * (optionally) name. | |
468 | */ | |
469 | static nvlist_t * | |
470 | fsavl_find(avl_tree_t *avl, uint64_t snapguid, char **snapname) | |
471 | { | |
472 | fsavl_node_t fn_find; | |
473 | fsavl_node_t *fn; | |
474 | ||
475 | fn_find.fn_guid = snapguid; | |
476 | ||
477 | fn = avl_find(avl, &fn_find, NULL); | |
478 | if (fn) { | |
479 | if (snapname) | |
480 | *snapname = fn->fn_snapname; | |
481 | return (fn->fn_nvfs); | |
482 | } | |
483 | return (NULL); | |
484 | } | |
485 | ||
486 | static void | |
487 | fsavl_destroy(avl_tree_t *avl) | |
488 | { | |
489 | fsavl_node_t *fn; | |
490 | void *cookie; | |
491 | ||
492 | if (avl == NULL) | |
493 | return; | |
494 | ||
495 | cookie = NULL; | |
496 | while ((fn = avl_destroy_nodes(avl, &cookie)) != NULL) | |
497 | free(fn); | |
498 | avl_destroy(avl); | |
499 | free(avl); | |
500 | } | |
501 | ||
45d1cae3 BB |
502 | /* |
503 | * Given an nvlist, produce an avl tree of snapshots, ordered by guid | |
504 | */ | |
34dc7c2f BB |
505 | static avl_tree_t * |
506 | fsavl_create(nvlist_t *fss) | |
507 | { | |
508 | avl_tree_t *fsavl; | |
509 | nvpair_t *fselem = NULL; | |
510 | ||
511 | if ((fsavl = malloc(sizeof (avl_tree_t))) == NULL) | |
512 | return (NULL); | |
513 | ||
514 | avl_create(fsavl, fsavl_compare, sizeof (fsavl_node_t), | |
515 | offsetof(fsavl_node_t, fn_node)); | |
516 | ||
517 | while ((fselem = nvlist_next_nvpair(fss, fselem)) != NULL) { | |
518 | nvlist_t *nvfs, *snaps; | |
519 | nvpair_t *snapelem = NULL; | |
520 | ||
521 | VERIFY(0 == nvpair_value_nvlist(fselem, &nvfs)); | |
522 | VERIFY(0 == nvlist_lookup_nvlist(nvfs, "snaps", &snaps)); | |
523 | ||
524 | while ((snapelem = | |
525 | nvlist_next_nvpair(snaps, snapelem)) != NULL) { | |
526 | fsavl_node_t *fn; | |
527 | uint64_t guid; | |
528 | ||
529 | VERIFY(0 == nvpair_value_uint64(snapelem, &guid)); | |
530 | if ((fn = malloc(sizeof (fsavl_node_t))) == NULL) { | |
531 | fsavl_destroy(fsavl); | |
532 | return (NULL); | |
533 | } | |
534 | fn->fn_nvfs = nvfs; | |
535 | fn->fn_snapname = nvpair_name(snapelem); | |
536 | fn->fn_guid = guid; | |
537 | ||
538 | /* | |
539 | * Note: if there are multiple snaps with the | |
540 | * same GUID, we ignore all but one. | |
541 | */ | |
542 | if (avl_find(fsavl, fn, NULL) == NULL) | |
543 | avl_add(fsavl, fn); | |
544 | else | |
545 | free(fn); | |
546 | } | |
547 | } | |
548 | ||
549 | return (fsavl); | |
550 | } | |
551 | ||
552 | /* | |
553 | * Routines for dealing with the giant nvlist of fs-nvlists, etc. | |
554 | */ | |
555 | typedef struct send_data { | |
556 | uint64_t parent_fromsnap_guid; | |
557 | nvlist_t *parent_snaps; | |
558 | nvlist_t *fss; | |
b128c09f | 559 | nvlist_t *snapprops; |
34dc7c2f BB |
560 | const char *fromsnap; |
561 | const char *tosnap; | |
428870ff | 562 | boolean_t recursive; |
34dc7c2f BB |
563 | |
564 | /* | |
565 | * The header nvlist is of the following format: | |
566 | * { | |
567 | * "tosnap" -> string | |
568 | * "fromsnap" -> string (if incremental) | |
569 | * "fss" -> { | |
570 | * id -> { | |
571 | * | |
572 | * "name" -> string (full name; for debugging) | |
573 | * "parentfromsnap" -> number (guid of fromsnap in parent) | |
574 | * | |
575 | * "props" -> { name -> value (only if set here) } | |
576 | * "snaps" -> { name (lastname) -> number (guid) } | |
b128c09f | 577 | * "snapprops" -> { name (lastname) -> { name -> value } } |
34dc7c2f BB |
578 | * |
579 | * "origin" -> number (guid) (if clone) | |
580 | * "sent" -> boolean (not on-disk) | |
581 | * } | |
582 | * } | |
583 | * } | |
584 | * | |
585 | */ | |
586 | } send_data_t; | |
587 | ||
b128c09f BB |
588 | static void send_iterate_prop(zfs_handle_t *zhp, nvlist_t *nv); |
589 | ||
34dc7c2f BB |
590 | static int |
591 | send_iterate_snap(zfs_handle_t *zhp, void *arg) | |
592 | { | |
593 | send_data_t *sd = arg; | |
594 | uint64_t guid = zhp->zfs_dmustats.dds_guid; | |
595 | char *snapname; | |
b128c09f | 596 | nvlist_t *nv; |
34dc7c2f BB |
597 | |
598 | snapname = strrchr(zhp->zfs_name, '@')+1; | |
599 | ||
600 | VERIFY(0 == nvlist_add_uint64(sd->parent_snaps, snapname, guid)); | |
601 | /* | |
602 | * NB: if there is no fromsnap here (it's a newly created fs in | |
603 | * an incremental replication), we will substitute the tosnap. | |
604 | */ | |
605 | if ((sd->fromsnap && strcmp(snapname, sd->fromsnap) == 0) || | |
606 | (sd->parent_fromsnap_guid == 0 && sd->tosnap && | |
607 | strcmp(snapname, sd->tosnap) == 0)) { | |
608 | sd->parent_fromsnap_guid = guid; | |
609 | } | |
610 | ||
b128c09f BB |
611 | VERIFY(0 == nvlist_alloc(&nv, NV_UNIQUE_NAME, 0)); |
612 | send_iterate_prop(zhp, nv); | |
613 | VERIFY(0 == nvlist_add_nvlist(sd->snapprops, snapname, nv)); | |
614 | nvlist_free(nv); | |
615 | ||
34dc7c2f BB |
616 | zfs_close(zhp); |
617 | return (0); | |
618 | } | |
619 | ||
620 | static void | |
621 | send_iterate_prop(zfs_handle_t *zhp, nvlist_t *nv) | |
622 | { | |
623 | nvpair_t *elem = NULL; | |
624 | ||
625 | while ((elem = nvlist_next_nvpair(zhp->zfs_props, elem)) != NULL) { | |
626 | char *propname = nvpair_name(elem); | |
627 | zfs_prop_t prop = zfs_name_to_prop(propname); | |
628 | nvlist_t *propnv; | |
629 | ||
428870ff BB |
630 | if (!zfs_prop_user(propname)) { |
631 | /* | |
632 | * Realistically, this should never happen. However, | |
633 | * we want the ability to add DSL properties without | |
634 | * needing to make incompatible version changes. We | |
635 | * need to ignore unknown properties to allow older | |
636 | * software to still send datasets containing these | |
637 | * properties, with the unknown properties elided. | |
638 | */ | |
639 | if (prop == ZPROP_INVAL) | |
640 | continue; | |
9babb374 | 641 | |
428870ff BB |
642 | if (zfs_prop_readonly(prop)) |
643 | continue; | |
644 | } | |
34dc7c2f BB |
645 | |
646 | verify(nvpair_value_nvlist(elem, &propnv) == 0); | |
45d1cae3 BB |
647 | if (prop == ZFS_PROP_QUOTA || prop == ZFS_PROP_RESERVATION || |
648 | prop == ZFS_PROP_REFQUOTA || | |
649 | prop == ZFS_PROP_REFRESERVATION) { | |
428870ff | 650 | char *source; |
34dc7c2f BB |
651 | uint64_t value; |
652 | verify(nvlist_lookup_uint64(propnv, | |
653 | ZPROP_VALUE, &value) == 0); | |
b128c09f BB |
654 | if (zhp->zfs_type == ZFS_TYPE_SNAPSHOT) |
655 | continue; | |
428870ff BB |
656 | /* |
657 | * May have no source before SPA_VERSION_RECVD_PROPS, | |
658 | * but is still modifiable. | |
659 | */ | |
660 | if (nvlist_lookup_string(propnv, | |
661 | ZPROP_SOURCE, &source) == 0) { | |
662 | if ((strcmp(source, zhp->zfs_name) != 0) && | |
663 | (strcmp(source, | |
664 | ZPROP_SOURCE_VAL_RECVD) != 0)) | |
665 | continue; | |
666 | } | |
34dc7c2f BB |
667 | } else { |
668 | char *source; | |
669 | if (nvlist_lookup_string(propnv, | |
670 | ZPROP_SOURCE, &source) != 0) | |
671 | continue; | |
428870ff BB |
672 | if ((strcmp(source, zhp->zfs_name) != 0) && |
673 | (strcmp(source, ZPROP_SOURCE_VAL_RECVD) != 0)) | |
34dc7c2f BB |
674 | continue; |
675 | } | |
676 | ||
677 | if (zfs_prop_user(propname) || | |
678 | zfs_prop_get_type(prop) == PROP_TYPE_STRING) { | |
679 | char *value; | |
680 | verify(nvlist_lookup_string(propnv, | |
681 | ZPROP_VALUE, &value) == 0); | |
682 | VERIFY(0 == nvlist_add_string(nv, propname, value)); | |
683 | } else { | |
684 | uint64_t value; | |
685 | verify(nvlist_lookup_uint64(propnv, | |
686 | ZPROP_VALUE, &value) == 0); | |
687 | VERIFY(0 == nvlist_add_uint64(nv, propname, value)); | |
688 | } | |
689 | } | |
690 | } | |
691 | ||
45d1cae3 BB |
692 | /* |
693 | * recursively generate nvlists describing datasets. See comment | |
694 | * for the data structure send_data_t above for description of contents | |
695 | * of the nvlist. | |
696 | */ | |
34dc7c2f BB |
697 | static int |
698 | send_iterate_fs(zfs_handle_t *zhp, void *arg) | |
699 | { | |
700 | send_data_t *sd = arg; | |
701 | nvlist_t *nvfs, *nv; | |
428870ff | 702 | int rv = 0; |
34dc7c2f BB |
703 | uint64_t parent_fromsnap_guid_save = sd->parent_fromsnap_guid; |
704 | uint64_t guid = zhp->zfs_dmustats.dds_guid; | |
705 | char guidstring[64]; | |
706 | ||
707 | VERIFY(0 == nvlist_alloc(&nvfs, NV_UNIQUE_NAME, 0)); | |
708 | VERIFY(0 == nvlist_add_string(nvfs, "name", zhp->zfs_name)); | |
709 | VERIFY(0 == nvlist_add_uint64(nvfs, "parentfromsnap", | |
710 | sd->parent_fromsnap_guid)); | |
711 | ||
712 | if (zhp->zfs_dmustats.dds_origin[0]) { | |
713 | zfs_handle_t *origin = zfs_open(zhp->zfs_hdl, | |
714 | zhp->zfs_dmustats.dds_origin, ZFS_TYPE_SNAPSHOT); | |
715 | if (origin == NULL) | |
716 | return (-1); | |
717 | VERIFY(0 == nvlist_add_uint64(nvfs, "origin", | |
718 | origin->zfs_dmustats.dds_guid)); | |
719 | } | |
720 | ||
721 | /* iterate over props */ | |
722 | VERIFY(0 == nvlist_alloc(&nv, NV_UNIQUE_NAME, 0)); | |
723 | send_iterate_prop(zhp, nv); | |
724 | VERIFY(0 == nvlist_add_nvlist(nvfs, "props", nv)); | |
725 | nvlist_free(nv); | |
726 | ||
727 | /* iterate over snaps, and set sd->parent_fromsnap_guid */ | |
728 | sd->parent_fromsnap_guid = 0; | |
729 | VERIFY(0 == nvlist_alloc(&sd->parent_snaps, NV_UNIQUE_NAME, 0)); | |
b128c09f | 730 | VERIFY(0 == nvlist_alloc(&sd->snapprops, NV_UNIQUE_NAME, 0)); |
0cee2406 | 731 | (void) zfs_iter_snapshots(zhp, B_FALSE, send_iterate_snap, sd); |
34dc7c2f | 732 | VERIFY(0 == nvlist_add_nvlist(nvfs, "snaps", sd->parent_snaps)); |
b128c09f | 733 | VERIFY(0 == nvlist_add_nvlist(nvfs, "snapprops", sd->snapprops)); |
34dc7c2f | 734 | nvlist_free(sd->parent_snaps); |
b128c09f | 735 | nvlist_free(sd->snapprops); |
34dc7c2f BB |
736 | |
737 | /* add this fs to nvlist */ | |
738 | (void) snprintf(guidstring, sizeof (guidstring), | |
739 | "0x%llx", (longlong_t)guid); | |
740 | VERIFY(0 == nvlist_add_nvlist(sd->fss, guidstring, nvfs)); | |
741 | nvlist_free(nvfs); | |
742 | ||
743 | /* iterate over children */ | |
428870ff BB |
744 | if (sd->recursive) |
745 | rv = zfs_iter_filesystems(zhp, send_iterate_fs, sd); | |
34dc7c2f BB |
746 | |
747 | sd->parent_fromsnap_guid = parent_fromsnap_guid_save; | |
748 | ||
749 | zfs_close(zhp); | |
750 | return (rv); | |
751 | } | |
752 | ||
753 | static int | |
754 | gather_nvlist(libzfs_handle_t *hdl, const char *fsname, const char *fromsnap, | |
428870ff | 755 | const char *tosnap, boolean_t recursive, nvlist_t **nvlp, avl_tree_t **avlp) |
34dc7c2f BB |
756 | { |
757 | zfs_handle_t *zhp; | |
758 | send_data_t sd = { 0 }; | |
759 | int error; | |
760 | ||
761 | zhp = zfs_open(hdl, fsname, ZFS_TYPE_FILESYSTEM | ZFS_TYPE_VOLUME); | |
762 | if (zhp == NULL) | |
763 | return (EZFS_BADTYPE); | |
764 | ||
765 | VERIFY(0 == nvlist_alloc(&sd.fss, NV_UNIQUE_NAME, 0)); | |
766 | sd.fromsnap = fromsnap; | |
767 | sd.tosnap = tosnap; | |
428870ff | 768 | sd.recursive = recursive; |
34dc7c2f BB |
769 | |
770 | if ((error = send_iterate_fs(zhp, &sd)) != 0) { | |
771 | nvlist_free(sd.fss); | |
772 | if (avlp != NULL) | |
773 | *avlp = NULL; | |
774 | *nvlp = NULL; | |
775 | return (error); | |
776 | } | |
777 | ||
778 | if (avlp != NULL && (*avlp = fsavl_create(sd.fss)) == NULL) { | |
779 | nvlist_free(sd.fss); | |
780 | *nvlp = NULL; | |
781 | return (EZFS_NOMEM); | |
782 | } | |
783 | ||
784 | *nvlp = sd.fss; | |
785 | return (0); | |
786 | } | |
787 | ||
34dc7c2f BB |
788 | /* |
789 | * Routines specific to "zfs send" | |
790 | */ | |
791 | typedef struct send_dump_data { | |
792 | /* these are all just the short snapname (the part after the @) */ | |
793 | const char *fromsnap; | |
794 | const char *tosnap; | |
428870ff | 795 | char prevsnap[ZFS_MAXNAMELEN]; |
572e2857 | 796 | uint64_t prevsnap_obj; |
34dc7c2f | 797 | boolean_t seenfrom, seento, replicate, doall, fromorigin; |
37abac6d | 798 | boolean_t verbose, dryrun, parsable, progress; |
34dc7c2f BB |
799 | int outfd; |
800 | boolean_t err; | |
801 | nvlist_t *fss; | |
802 | avl_tree_t *fsavl; | |
428870ff BB |
803 | snapfilter_cb_t *filter_cb; |
804 | void *filter_cb_arg; | |
805 | nvlist_t *debugnv; | |
572e2857 BB |
806 | char holdtag[ZFS_MAXNAMELEN]; |
807 | int cleanup_fd; | |
330d06f9 | 808 | uint64_t size; |
34dc7c2f BB |
809 | } send_dump_data_t; |
810 | ||
330d06f9 MA |
811 | static int |
812 | estimate_ioctl(zfs_handle_t *zhp, uint64_t fromsnap_obj, | |
813 | boolean_t fromorigin, uint64_t *sizep) | |
814 | { | |
815 | zfs_cmd_t zc = { "\0", "\0", "\0", "\0", 0 }; | |
816 | libzfs_handle_t *hdl = zhp->zfs_hdl; | |
817 | ||
818 | assert(zhp->zfs_type == ZFS_TYPE_SNAPSHOT); | |
819 | assert(fromsnap_obj == 0 || !fromorigin); | |
820 | ||
821 | (void) strlcpy(zc.zc_name, zhp->zfs_name, sizeof (zc.zc_name)); | |
822 | zc.zc_obj = fromorigin; | |
823 | zc.zc_sendobj = zfs_prop_get_int(zhp, ZFS_PROP_OBJSETID); | |
824 | zc.zc_fromobj = fromsnap_obj; | |
825 | zc.zc_guid = 1; /* estimate flag */ | |
826 | ||
827 | if (zfs_ioctl(zhp->zfs_hdl, ZFS_IOC_SEND, &zc) != 0) { | |
828 | char errbuf[1024]; | |
829 | (void) snprintf(errbuf, sizeof (errbuf), dgettext(TEXT_DOMAIN, | |
830 | "warning: cannot estimate space for '%s'"), zhp->zfs_name); | |
831 | ||
832 | switch (errno) { | |
833 | case EXDEV: | |
834 | zfs_error_aux(hdl, dgettext(TEXT_DOMAIN, | |
835 | "not an earlier snapshot from the same fs")); | |
836 | return (zfs_error(hdl, EZFS_CROSSTARGET, errbuf)); | |
837 | ||
838 | case ENOENT: | |
839 | if (zfs_dataset_exists(hdl, zc.zc_name, | |
840 | ZFS_TYPE_SNAPSHOT)) { | |
841 | zfs_error_aux(hdl, dgettext(TEXT_DOMAIN, | |
842 | "incremental source (@%s) does not exist"), | |
843 | zc.zc_value); | |
844 | } | |
845 | return (zfs_error(hdl, EZFS_NOENT, errbuf)); | |
846 | ||
847 | case EDQUOT: | |
848 | case EFBIG: | |
849 | case EIO: | |
850 | case ENOLINK: | |
851 | case ENOSPC: | |
852 | case ENOSTR: | |
853 | case ENXIO: | |
854 | case EPIPE: | |
855 | case ERANGE: | |
856 | case EFAULT: | |
857 | case EROFS: | |
858 | zfs_error_aux(hdl, strerror(errno)); | |
859 | return (zfs_error(hdl, EZFS_BADBACKUP, errbuf)); | |
860 | ||
861 | default: | |
862 | return (zfs_standard_error(hdl, errno, errbuf)); | |
863 | } | |
864 | } | |
865 | ||
866 | *sizep = zc.zc_objset_type; | |
867 | ||
868 | return (0); | |
869 | } | |
870 | ||
34dc7c2f BB |
871 | /* |
872 | * Dumps a backup of the given snapshot (incremental from fromsnap if it's not | |
873 | * NULL) to the file descriptor specified by outfd. | |
874 | */ | |
875 | static int | |
572e2857 BB |
876 | dump_ioctl(zfs_handle_t *zhp, const char *fromsnap, uint64_t fromsnap_obj, |
877 | boolean_t fromorigin, int outfd, nvlist_t *debugnv) | |
34dc7c2f | 878 | { |
2598c001 | 879 | zfs_cmd_t zc = { "\0", "\0", "\0", "\0", 0 }; |
34dc7c2f | 880 | libzfs_handle_t *hdl = zhp->zfs_hdl; |
428870ff | 881 | nvlist_t *thisdbg; |
34dc7c2f BB |
882 | |
883 | assert(zhp->zfs_type == ZFS_TYPE_SNAPSHOT); | |
572e2857 | 884 | assert(fromsnap_obj == 0 || !fromorigin); |
34dc7c2f BB |
885 | |
886 | (void) strlcpy(zc.zc_name, zhp->zfs_name, sizeof (zc.zc_name)); | |
34dc7c2f BB |
887 | zc.zc_cookie = outfd; |
888 | zc.zc_obj = fromorigin; | |
572e2857 BB |
889 | zc.zc_sendobj = zfs_prop_get_int(zhp, ZFS_PROP_OBJSETID); |
890 | zc.zc_fromobj = fromsnap_obj; | |
428870ff BB |
891 | |
892 | VERIFY(0 == nvlist_alloc(&thisdbg, NV_UNIQUE_NAME, 0)); | |
893 | if (fromsnap && fromsnap[0] != '\0') { | |
894 | VERIFY(0 == nvlist_add_string(thisdbg, | |
895 | "fromsnap", fromsnap)); | |
896 | } | |
897 | ||
330d06f9 | 898 | if (zfs_ioctl(zhp->zfs_hdl, ZFS_IOC_SEND, &zc) != 0) { |
34dc7c2f BB |
899 | char errbuf[1024]; |
900 | (void) snprintf(errbuf, sizeof (errbuf), dgettext(TEXT_DOMAIN, | |
901 | "warning: cannot send '%s'"), zhp->zfs_name); | |
902 | ||
428870ff BB |
903 | VERIFY(0 == nvlist_add_uint64(thisdbg, "error", errno)); |
904 | if (debugnv) { | |
905 | VERIFY(0 == nvlist_add_nvlist(debugnv, | |
906 | zhp->zfs_name, thisdbg)); | |
907 | } | |
908 | nvlist_free(thisdbg); | |
909 | ||
34dc7c2f | 910 | switch (errno) { |
34dc7c2f BB |
911 | case EXDEV: |
912 | zfs_error_aux(hdl, dgettext(TEXT_DOMAIN, | |
913 | "not an earlier snapshot from the same fs")); | |
914 | return (zfs_error(hdl, EZFS_CROSSTARGET, errbuf)); | |
915 | ||
916 | case ENOENT: | |
917 | if (zfs_dataset_exists(hdl, zc.zc_name, | |
918 | ZFS_TYPE_SNAPSHOT)) { | |
919 | zfs_error_aux(hdl, dgettext(TEXT_DOMAIN, | |
920 | "incremental source (@%s) does not exist"), | |
921 | zc.zc_value); | |
922 | } | |
923 | return (zfs_error(hdl, EZFS_NOENT, errbuf)); | |
924 | ||
925 | case EDQUOT: | |
926 | case EFBIG: | |
927 | case EIO: | |
928 | case ENOLINK: | |
929 | case ENOSPC: | |
930 | case ENOSTR: | |
931 | case ENXIO: | |
932 | case EPIPE: | |
933 | case ERANGE: | |
934 | case EFAULT: | |
935 | case EROFS: | |
936 | zfs_error_aux(hdl, strerror(errno)); | |
937 | return (zfs_error(hdl, EZFS_BADBACKUP, errbuf)); | |
938 | ||
939 | default: | |
940 | return (zfs_standard_error(hdl, errno, errbuf)); | |
941 | } | |
942 | } | |
943 | ||
428870ff BB |
944 | if (debugnv) |
945 | VERIFY(0 == nvlist_add_nvlist(debugnv, zhp->zfs_name, thisdbg)); | |
946 | nvlist_free(thisdbg); | |
947 | ||
34dc7c2f BB |
948 | return (0); |
949 | } | |
950 | ||
572e2857 BB |
951 | static int |
952 | hold_for_send(zfs_handle_t *zhp, send_dump_data_t *sdd) | |
953 | { | |
954 | zfs_handle_t *pzhp; | |
955 | int error = 0; | |
956 | char *thissnap; | |
957 | ||
958 | assert(zhp->zfs_type == ZFS_TYPE_SNAPSHOT); | |
959 | ||
330d06f9 MA |
960 | if (sdd->dryrun) |
961 | return (0); | |
962 | ||
572e2857 BB |
963 | /* |
964 | * zfs_send() only opens a cleanup_fd for sends that need it, | |
965 | * e.g. replication and doall. | |
966 | */ | |
967 | if (sdd->cleanup_fd == -1) | |
968 | return (0); | |
969 | ||
970 | thissnap = strchr(zhp->zfs_name, '@') + 1; | |
971 | *(thissnap - 1) = '\0'; | |
972 | pzhp = zfs_open(zhp->zfs_hdl, zhp->zfs_name, ZFS_TYPE_DATASET); | |
973 | *(thissnap - 1) = '@'; | |
974 | ||
975 | /* | |
976 | * It's OK if the parent no longer exists. The send code will | |
977 | * handle that error. | |
978 | */ | |
979 | if (pzhp) { | |
980 | error = zfs_hold(pzhp, thissnap, sdd->holdtag, | |
981 | B_FALSE, B_TRUE, B_TRUE, sdd->cleanup_fd, | |
982 | zfs_prop_get_int(zhp, ZFS_PROP_OBJSETID), | |
983 | zfs_prop_get_int(zhp, ZFS_PROP_CREATETXG)); | |
984 | zfs_close(pzhp); | |
985 | } | |
986 | ||
987 | return (error); | |
988 | } | |
989 | ||
37abac6d BP |
990 | static void * |
991 | send_progress_thread(void *arg) | |
992 | { | |
993 | progress_arg_t *pa = arg; | |
994 | ||
995 | zfs_cmd_t zc = { "\0", "\0", "\0", "\0", 0 }; | |
996 | zfs_handle_t *zhp = pa->pa_zhp; | |
997 | libzfs_handle_t *hdl = zhp->zfs_hdl; | |
998 | unsigned long long bytes; | |
999 | char buf[16]; | |
1000 | ||
1001 | time_t t; | |
1002 | struct tm *tm; | |
1003 | ||
1004 | assert(zhp->zfs_type == ZFS_TYPE_SNAPSHOT); | |
1005 | (void) strlcpy(zc.zc_name, zhp->zfs_name, sizeof (zc.zc_name)); | |
1006 | ||
1007 | if (!pa->pa_parsable) | |
1008 | (void) fprintf(stderr, "TIME SENT SNAPSHOT\n"); | |
1009 | ||
1010 | /* | |
1011 | * Print the progress from ZFS_IOC_SEND_PROGRESS every second. | |
1012 | */ | |
1013 | for (;;) { | |
1014 | (void) sleep(1); | |
1015 | ||
1016 | zc.zc_cookie = pa->pa_fd; | |
1017 | if (zfs_ioctl(hdl, ZFS_IOC_SEND_PROGRESS, &zc) != 0) | |
1018 | return ((void *)-1); | |
1019 | ||
1020 | (void) time(&t); | |
1021 | tm = localtime(&t); | |
1022 | bytes = zc.zc_cookie; | |
1023 | ||
1024 | if (pa->pa_parsable) { | |
1025 | (void) fprintf(stderr, "%02d:%02d:%02d\t%llu\t%s\n", | |
1026 | tm->tm_hour, tm->tm_min, tm->tm_sec, | |
1027 | bytes, zhp->zfs_name); | |
1028 | } else { | |
1029 | zfs_nicenum(bytes, buf, sizeof (buf)); | |
1030 | (void) fprintf(stderr, "%02d:%02d:%02d %5s %s\n", | |
1031 | tm->tm_hour, tm->tm_min, tm->tm_sec, | |
1032 | buf, zhp->zfs_name); | |
1033 | } | |
1034 | } | |
1035 | } | |
1036 | ||
34dc7c2f BB |
1037 | static int |
1038 | dump_snapshot(zfs_handle_t *zhp, void *arg) | |
1039 | { | |
1040 | send_dump_data_t *sdd = arg; | |
37abac6d BP |
1041 | progress_arg_t pa = { 0 }; |
1042 | pthread_t tid; | |
1043 | ||
572e2857 | 1044 | char *thissnap; |
34dc7c2f | 1045 | int err; |
330d06f9 | 1046 | boolean_t isfromsnap, istosnap, fromorigin; |
428870ff | 1047 | boolean_t exclude = B_FALSE; |
34dc7c2f BB |
1048 | |
1049 | thissnap = strchr(zhp->zfs_name, '@') + 1; | |
428870ff BB |
1050 | isfromsnap = (sdd->fromsnap != NULL && |
1051 | strcmp(sdd->fromsnap, thissnap) == 0); | |
34dc7c2f | 1052 | |
428870ff | 1053 | if (!sdd->seenfrom && isfromsnap) { |
572e2857 BB |
1054 | err = hold_for_send(zhp, sdd); |
1055 | if (err == 0) { | |
1056 | sdd->seenfrom = B_TRUE; | |
1057 | (void) strcpy(sdd->prevsnap, thissnap); | |
1058 | sdd->prevsnap_obj = zfs_prop_get_int(zhp, | |
1059 | ZFS_PROP_OBJSETID); | |
1060 | } else if (err == ENOENT) { | |
1061 | err = 0; | |
1062 | } | |
34dc7c2f | 1063 | zfs_close(zhp); |
572e2857 | 1064 | return (err); |
34dc7c2f BB |
1065 | } |
1066 | ||
1067 | if (sdd->seento || !sdd->seenfrom) { | |
1068 | zfs_close(zhp); | |
1069 | return (0); | |
1070 | } | |
1071 | ||
428870ff BB |
1072 | istosnap = (strcmp(sdd->tosnap, thissnap) == 0); |
1073 | if (istosnap) | |
1074 | sdd->seento = B_TRUE; | |
1075 | ||
1076 | if (!sdd->doall && !isfromsnap && !istosnap) { | |
1077 | if (sdd->replicate) { | |
1078 | char *snapname; | |
1079 | nvlist_t *snapprops; | |
1080 | /* | |
1081 | * Filter out all intermediate snapshots except origin | |
1082 | * snapshots needed to replicate clones. | |
1083 | */ | |
1084 | nvlist_t *nvfs = fsavl_find(sdd->fsavl, | |
1085 | zhp->zfs_dmustats.dds_guid, &snapname); | |
1086 | ||
1087 | VERIFY(0 == nvlist_lookup_nvlist(nvfs, | |
1088 | "snapprops", &snapprops)); | |
1089 | VERIFY(0 == nvlist_lookup_nvlist(snapprops, | |
1090 | thissnap, &snapprops)); | |
1091 | exclude = !nvlist_exists(snapprops, "is_clone_origin"); | |
1092 | } else { | |
1093 | exclude = B_TRUE; | |
1094 | } | |
1095 | } | |
1096 | ||
1097 | /* | |
1098 | * If a filter function exists, call it to determine whether | |
1099 | * this snapshot will be sent. | |
1100 | */ | |
1101 | if (exclude || (sdd->filter_cb != NULL && | |
1102 | sdd->filter_cb(zhp, sdd->filter_cb_arg) == B_FALSE)) { | |
1103 | /* | |
1104 | * This snapshot is filtered out. Don't send it, and don't | |
572e2857 | 1105 | * set prevsnap_obj, so it will be as if this snapshot didn't |
428870ff BB |
1106 | * exist, and the next accepted snapshot will be sent as |
1107 | * an incremental from the last accepted one, or as the | |
1108 | * first (and full) snapshot in the case of a replication, | |
1109 | * non-incremental send. | |
1110 | */ | |
1111 | zfs_close(zhp); | |
1112 | return (0); | |
1113 | } | |
1114 | ||
572e2857 BB |
1115 | err = hold_for_send(zhp, sdd); |
1116 | if (err) { | |
1117 | if (err == ENOENT) | |
1118 | err = 0; | |
1119 | zfs_close(zhp); | |
1120 | return (err); | |
1121 | } | |
1122 | ||
330d06f9 MA |
1123 | fromorigin = sdd->prevsnap[0] == '\0' && |
1124 | (sdd->fromorigin || sdd->replicate); | |
1125 | ||
34dc7c2f | 1126 | if (sdd->verbose) { |
330d06f9 MA |
1127 | uint64_t size; |
1128 | err = estimate_ioctl(zhp, sdd->prevsnap_obj, | |
1129 | fromorigin, &size); | |
1130 | ||
1131 | if (sdd->parsable) { | |
1132 | if (sdd->prevsnap[0] != '\0') { | |
1133 | (void) fprintf(stderr, "incremental\t%s\t%s", | |
1134 | sdd->prevsnap, zhp->zfs_name); | |
1135 | } else { | |
1136 | (void) fprintf(stderr, "full\t%s", | |
1137 | zhp->zfs_name); | |
1138 | } | |
1139 | } else { | |
1140 | (void) fprintf(stderr, dgettext(TEXT_DOMAIN, | |
1141 | "send from @%s to %s"), | |
1142 | sdd->prevsnap, zhp->zfs_name); | |
1143 | } | |
1144 | if (err == 0) { | |
1145 | if (sdd->parsable) { | |
1146 | (void) fprintf(stderr, "\t%llu\n", | |
1147 | (longlong_t)size); | |
1148 | } else { | |
1149 | char buf[16]; | |
1150 | zfs_nicenum(size, buf, sizeof (buf)); | |
1151 | (void) fprintf(stderr, dgettext(TEXT_DOMAIN, | |
1152 | " estimated size is %s\n"), buf); | |
1153 | } | |
1154 | sdd->size += size; | |
1155 | } else { | |
1156 | (void) fprintf(stderr, "\n"); | |
1157 | } | |
34dc7c2f BB |
1158 | } |
1159 | ||
330d06f9 | 1160 | if (!sdd->dryrun) { |
37abac6d BP |
1161 | /* |
1162 | * If progress reporting is requested, spawn a new thread to | |
1163 | * poll ZFS_IOC_SEND_PROGRESS at a regular interval. | |
1164 | */ | |
1165 | if (sdd->progress) { | |
1166 | pa.pa_zhp = zhp; | |
1167 | pa.pa_fd = sdd->outfd; | |
1168 | pa.pa_parsable = sdd->parsable; | |
1169 | ||
1170 | if ((err = pthread_create(&tid, NULL, | |
1171 | send_progress_thread, &pa))) { | |
1172 | zfs_close(zhp); | |
1173 | return (err); | |
1174 | } | |
1175 | } | |
1176 | ||
330d06f9 MA |
1177 | err = dump_ioctl(zhp, sdd->prevsnap, sdd->prevsnap_obj, |
1178 | fromorigin, sdd->outfd, sdd->debugnv); | |
37abac6d BP |
1179 | |
1180 | if (sdd->progress) { | |
1181 | (void) pthread_cancel(tid); | |
1182 | (void) pthread_join(tid, NULL); | |
1183 | } | |
330d06f9 | 1184 | } |
34dc7c2f | 1185 | |
572e2857 BB |
1186 | (void) strcpy(sdd->prevsnap, thissnap); |
1187 | sdd->prevsnap_obj = zfs_prop_get_int(zhp, ZFS_PROP_OBJSETID); | |
34dc7c2f BB |
1188 | zfs_close(zhp); |
1189 | return (err); | |
1190 | } | |
1191 | ||
1192 | static int | |
1193 | dump_filesystem(zfs_handle_t *zhp, void *arg) | |
1194 | { | |
1195 | int rv = 0; | |
1196 | send_dump_data_t *sdd = arg; | |
1197 | boolean_t missingfrom = B_FALSE; | |
2598c001 | 1198 | zfs_cmd_t zc = { "\0", "\0", "\0", "\0", 0 }; |
34dc7c2f BB |
1199 | |
1200 | (void) snprintf(zc.zc_name, sizeof (zc.zc_name), "%s@%s", | |
1201 | zhp->zfs_name, sdd->tosnap); | |
1202 | if (ioctl(zhp->zfs_hdl->libzfs_fd, ZFS_IOC_OBJSET_STATS, &zc) != 0) { | |
330d06f9 MA |
1203 | (void) fprintf(stderr, dgettext(TEXT_DOMAIN, |
1204 | "WARNING: could not send %s@%s: does not exist\n"), | |
34dc7c2f BB |
1205 | zhp->zfs_name, sdd->tosnap); |
1206 | sdd->err = B_TRUE; | |
1207 | return (0); | |
1208 | } | |
1209 | ||
1210 | if (sdd->replicate && sdd->fromsnap) { | |
1211 | /* | |
1212 | * If this fs does not have fromsnap, and we're doing | |
1213 | * recursive, we need to send a full stream from the | |
1214 | * beginning (or an incremental from the origin if this | |
1215 | * is a clone). If we're doing non-recursive, then let | |
1216 | * them get the error. | |
1217 | */ | |
1218 | (void) snprintf(zc.zc_name, sizeof (zc.zc_name), "%s@%s", | |
1219 | zhp->zfs_name, sdd->fromsnap); | |
1220 | if (ioctl(zhp->zfs_hdl->libzfs_fd, | |
1221 | ZFS_IOC_OBJSET_STATS, &zc) != 0) { | |
1222 | missingfrom = B_TRUE; | |
1223 | } | |
1224 | } | |
1225 | ||
428870ff | 1226 | sdd->seenfrom = sdd->seento = sdd->prevsnap[0] = 0; |
572e2857 | 1227 | sdd->prevsnap_obj = 0; |
428870ff BB |
1228 | if (sdd->fromsnap == NULL || missingfrom) |
1229 | sdd->seenfrom = B_TRUE; | |
34dc7c2f | 1230 | |
428870ff BB |
1231 | rv = zfs_iter_snapshots_sorted(zhp, dump_snapshot, arg); |
1232 | if (!sdd->seenfrom) { | |
330d06f9 | 1233 | (void) fprintf(stderr, dgettext(TEXT_DOMAIN, |
428870ff | 1234 | "WARNING: could not send %s@%s:\n" |
330d06f9 | 1235 | "incremental source (%s@%s) does not exist\n"), |
428870ff BB |
1236 | zhp->zfs_name, sdd->tosnap, |
1237 | zhp->zfs_name, sdd->fromsnap); | |
1238 | sdd->err = B_TRUE; | |
1239 | } else if (!sdd->seento) { | |
1240 | if (sdd->fromsnap) { | |
330d06f9 | 1241 | (void) fprintf(stderr, dgettext(TEXT_DOMAIN, |
34dc7c2f | 1242 | "WARNING: could not send %s@%s:\n" |
428870ff | 1243 | "incremental source (%s@%s) " |
330d06f9 | 1244 | "is not earlier than it\n"), |
34dc7c2f BB |
1245 | zhp->zfs_name, sdd->tosnap, |
1246 | zhp->zfs_name, sdd->fromsnap); | |
34dc7c2f | 1247 | } else { |
330d06f9 MA |
1248 | (void) fprintf(stderr, dgettext(TEXT_DOMAIN, |
1249 | "WARNING: " | |
1250 | "could not send %s@%s: does not exist\n"), | |
428870ff | 1251 | zhp->zfs_name, sdd->tosnap); |
34dc7c2f | 1252 | } |
428870ff | 1253 | sdd->err = B_TRUE; |
34dc7c2f BB |
1254 | } |
1255 | ||
1256 | return (rv); | |
1257 | } | |
1258 | ||
1259 | static int | |
1260 | dump_filesystems(zfs_handle_t *rzhp, void *arg) | |
1261 | { | |
1262 | send_dump_data_t *sdd = arg; | |
1263 | nvpair_t *fspair; | |
1264 | boolean_t needagain, progress; | |
1265 | ||
1266 | if (!sdd->replicate) | |
1267 | return (dump_filesystem(rzhp, sdd)); | |
1268 | ||
428870ff BB |
1269 | /* Mark the clone origin snapshots. */ |
1270 | for (fspair = nvlist_next_nvpair(sdd->fss, NULL); fspair; | |
1271 | fspair = nvlist_next_nvpair(sdd->fss, fspair)) { | |
1272 | nvlist_t *nvfs; | |
1273 | uint64_t origin_guid = 0; | |
1274 | ||
1275 | VERIFY(0 == nvpair_value_nvlist(fspair, &nvfs)); | |
1276 | (void) nvlist_lookup_uint64(nvfs, "origin", &origin_guid); | |
1277 | if (origin_guid != 0) { | |
1278 | char *snapname; | |
1279 | nvlist_t *origin_nv = fsavl_find(sdd->fsavl, | |
1280 | origin_guid, &snapname); | |
1281 | if (origin_nv != NULL) { | |
1282 | nvlist_t *snapprops; | |
1283 | VERIFY(0 == nvlist_lookup_nvlist(origin_nv, | |
1284 | "snapprops", &snapprops)); | |
1285 | VERIFY(0 == nvlist_lookup_nvlist(snapprops, | |
1286 | snapname, &snapprops)); | |
1287 | VERIFY(0 == nvlist_add_boolean( | |
1288 | snapprops, "is_clone_origin")); | |
1289 | } | |
1290 | } | |
1291 | } | |
34dc7c2f BB |
1292 | again: |
1293 | needagain = progress = B_FALSE; | |
1294 | for (fspair = nvlist_next_nvpair(sdd->fss, NULL); fspair; | |
1295 | fspair = nvlist_next_nvpair(sdd->fss, fspair)) { | |
330d06f9 | 1296 | nvlist_t *fslist, *parent_nv; |
34dc7c2f BB |
1297 | char *fsname; |
1298 | zfs_handle_t *zhp; | |
1299 | int err; | |
1300 | uint64_t origin_guid = 0; | |
330d06f9 | 1301 | uint64_t parent_guid = 0; |
34dc7c2f BB |
1302 | |
1303 | VERIFY(nvpair_value_nvlist(fspair, &fslist) == 0); | |
1304 | if (nvlist_lookup_boolean(fslist, "sent") == 0) | |
1305 | continue; | |
1306 | ||
1307 | VERIFY(nvlist_lookup_string(fslist, "name", &fsname) == 0); | |
1308 | (void) nvlist_lookup_uint64(fslist, "origin", &origin_guid); | |
330d06f9 MA |
1309 | (void) nvlist_lookup_uint64(fslist, "parentfromsnap", |
1310 | &parent_guid); | |
1311 | ||
1312 | if (parent_guid != 0) { | |
1313 | parent_nv = fsavl_find(sdd->fsavl, parent_guid, NULL); | |
1314 | if (!nvlist_exists(parent_nv, "sent")) { | |
1315 | /* parent has not been sent; skip this one */ | |
1316 | needagain = B_TRUE; | |
1317 | continue; | |
1318 | } | |
1319 | } | |
34dc7c2f | 1320 | |
428870ff BB |
1321 | if (origin_guid != 0) { |
1322 | nvlist_t *origin_nv = fsavl_find(sdd->fsavl, | |
1323 | origin_guid, NULL); | |
1324 | if (origin_nv != NULL && | |
330d06f9 | 1325 | !nvlist_exists(origin_nv, "sent")) { |
428870ff BB |
1326 | /* |
1327 | * origin has not been sent yet; | |
1328 | * skip this clone. | |
1329 | */ | |
1330 | needagain = B_TRUE; | |
1331 | continue; | |
1332 | } | |
34dc7c2f BB |
1333 | } |
1334 | ||
1335 | zhp = zfs_open(rzhp->zfs_hdl, fsname, ZFS_TYPE_DATASET); | |
1336 | if (zhp == NULL) | |
1337 | return (-1); | |
1338 | err = dump_filesystem(zhp, sdd); | |
1339 | VERIFY(nvlist_add_boolean(fslist, "sent") == 0); | |
1340 | progress = B_TRUE; | |
1341 | zfs_close(zhp); | |
1342 | if (err) | |
1343 | return (err); | |
1344 | } | |
1345 | if (needagain) { | |
1346 | assert(progress); | |
1347 | goto again; | |
1348 | } | |
330d06f9 MA |
1349 | |
1350 | /* clean out the sent flags in case we reuse this fss */ | |
1351 | for (fspair = nvlist_next_nvpair(sdd->fss, NULL); fspair; | |
1352 | fspair = nvlist_next_nvpair(sdd->fss, fspair)) { | |
1353 | nvlist_t *fslist; | |
1354 | ||
1355 | VERIFY(nvpair_value_nvlist(fspair, &fslist) == 0); | |
1356 | (void) nvlist_remove_all(fslist, "sent"); | |
1357 | } | |
1358 | ||
34dc7c2f BB |
1359 | return (0); |
1360 | } | |
1361 | ||
1362 | /* | |
45d1cae3 BB |
1363 | * Generate a send stream for the dataset identified by the argument zhp. |
1364 | * | |
1365 | * The content of the send stream is the snapshot identified by | |
1366 | * 'tosnap'. Incremental streams are requested in two ways: | |
1367 | * - from the snapshot identified by "fromsnap" (if non-null) or | |
1368 | * - from the origin of the dataset identified by zhp, which must | |
1369 | * be a clone. In this case, "fromsnap" is null and "fromorigin" | |
1370 | * is TRUE. | |
1371 | * | |
1372 | * The send stream is recursive (i.e. dumps a hierarchy of snapshots) and | |
428870ff | 1373 | * uses a special header (with a hdrtype field of DMU_COMPOUNDSTREAM) |
45d1cae3 | 1374 | * if "replicate" is set. If "doall" is set, dump all the intermediate |
428870ff BB |
1375 | * snapshots. The DMU_COMPOUNDSTREAM header is used in the "doall" |
1376 | * case too. If "props" is set, send properties. | |
34dc7c2f BB |
1377 | */ |
1378 | int | |
1379 | zfs_send(zfs_handle_t *zhp, const char *fromsnap, const char *tosnap, | |
330d06f9 | 1380 | sendflags_t *flags, int outfd, snapfilter_cb_t filter_func, |
428870ff | 1381 | void *cb_arg, nvlist_t **debugnvp) |
34dc7c2f BB |
1382 | { |
1383 | char errbuf[1024]; | |
1384 | send_dump_data_t sdd = { 0 }; | |
330d06f9 | 1385 | int err = 0; |
34dc7c2f BB |
1386 | nvlist_t *fss = NULL; |
1387 | avl_tree_t *fsavl = NULL; | |
428870ff BB |
1388 | static uint64_t holdseq; |
1389 | int spa_version; | |
428870ff BB |
1390 | pthread_t tid; |
1391 | int pipefd[2]; | |
1392 | dedup_arg_t dda = { 0 }; | |
1393 | int featureflags = 0; | |
1394 | ||
34dc7c2f BB |
1395 | (void) snprintf(errbuf, sizeof (errbuf), dgettext(TEXT_DOMAIN, |
1396 | "cannot send '%s'"), zhp->zfs_name); | |
1397 | ||
1398 | if (fromsnap && fromsnap[0] == '\0') { | |
1399 | zfs_error_aux(zhp->zfs_hdl, dgettext(TEXT_DOMAIN, | |
1400 | "zero-length incremental source")); | |
1401 | return (zfs_error(zhp->zfs_hdl, EZFS_NOENT, errbuf)); | |
1402 | } | |
1403 | ||
572e2857 BB |
1404 | if (zhp->zfs_type == ZFS_TYPE_FILESYSTEM) { |
1405 | uint64_t version; | |
1406 | version = zfs_prop_get_int(zhp, ZFS_PROP_VERSION); | |
1407 | if (version >= ZPL_VERSION_SA) { | |
1408 | featureflags |= DMU_BACKUP_FEATURE_SA_SPILL; | |
1409 | } | |
1410 | } | |
1411 | ||
330d06f9 | 1412 | if (flags->dedup && !flags->dryrun) { |
428870ff BB |
1413 | featureflags |= (DMU_BACKUP_FEATURE_DEDUP | |
1414 | DMU_BACKUP_FEATURE_DEDUPPROPS); | |
1b9d8c34 | 1415 | if ((err = socketpair(AF_UNIX, SOCK_STREAM, 0, pipefd))) { |
428870ff BB |
1416 | zfs_error_aux(zhp->zfs_hdl, strerror(errno)); |
1417 | return (zfs_error(zhp->zfs_hdl, EZFS_PIPEFAILED, | |
1418 | errbuf)); | |
1419 | } | |
1420 | dda.outputfd = outfd; | |
1421 | dda.inputfd = pipefd[1]; | |
1422 | dda.dedup_hdl = zhp->zfs_hdl; | |
c65aa5b2 | 1423 | if ((err = pthread_create(&tid, NULL, cksummer, &dda))) { |
428870ff BB |
1424 | (void) close(pipefd[0]); |
1425 | (void) close(pipefd[1]); | |
1426 | zfs_error_aux(zhp->zfs_hdl, strerror(errno)); | |
1427 | return (zfs_error(zhp->zfs_hdl, | |
1428 | EZFS_THREADCREATEFAILED, errbuf)); | |
1429 | } | |
1430 | } | |
1431 | ||
330d06f9 | 1432 | if (flags->replicate || flags->doall || flags->props) { |
34dc7c2f BB |
1433 | dmu_replay_record_t drr = { 0 }; |
1434 | char *packbuf = NULL; | |
1435 | size_t buflen = 0; | |
2598c001 | 1436 | zio_cksum_t zc = { { 0 } }; |
34dc7c2f | 1437 | |
330d06f9 | 1438 | if (flags->replicate || flags->props) { |
34dc7c2f BB |
1439 | nvlist_t *hdrnv; |
1440 | ||
1441 | VERIFY(0 == nvlist_alloc(&hdrnv, NV_UNIQUE_NAME, 0)); | |
1442 | if (fromsnap) { | |
1443 | VERIFY(0 == nvlist_add_string(hdrnv, | |
1444 | "fromsnap", fromsnap)); | |
1445 | } | |
1446 | VERIFY(0 == nvlist_add_string(hdrnv, "tosnap", tosnap)); | |
330d06f9 | 1447 | if (!flags->replicate) { |
428870ff BB |
1448 | VERIFY(0 == nvlist_add_boolean(hdrnv, |
1449 | "not_recursive")); | |
1450 | } | |
34dc7c2f BB |
1451 | |
1452 | err = gather_nvlist(zhp->zfs_hdl, zhp->zfs_name, | |
330d06f9 | 1453 | fromsnap, tosnap, flags->replicate, &fss, &fsavl); |
572e2857 | 1454 | if (err) |
428870ff | 1455 | goto err_out; |
34dc7c2f BB |
1456 | VERIFY(0 == nvlist_add_nvlist(hdrnv, "fss", fss)); |
1457 | err = nvlist_pack(hdrnv, &packbuf, &buflen, | |
1458 | NV_ENCODE_XDR, 0); | |
428870ff BB |
1459 | if (debugnvp) |
1460 | *debugnvp = hdrnv; | |
1461 | else | |
1462 | nvlist_free(hdrnv); | |
34dc7c2f BB |
1463 | if (err) { |
1464 | fsavl_destroy(fsavl); | |
1465 | nvlist_free(fss); | |
428870ff | 1466 | goto stderr_out; |
34dc7c2f BB |
1467 | } |
1468 | } | |
1469 | ||
330d06f9 MA |
1470 | if (!flags->dryrun) { |
1471 | /* write first begin record */ | |
1472 | drr.drr_type = DRR_BEGIN; | |
1473 | drr.drr_u.drr_begin.drr_magic = DMU_BACKUP_MAGIC; | |
1474 | DMU_SET_STREAM_HDRTYPE(drr.drr_u.drr_begin. | |
1475 | drr_versioninfo, DMU_COMPOUNDSTREAM); | |
1476 | DMU_SET_FEATUREFLAGS(drr.drr_u.drr_begin. | |
1477 | drr_versioninfo, featureflags); | |
1478 | (void) snprintf(drr.drr_u.drr_begin.drr_toname, | |
1479 | sizeof (drr.drr_u.drr_begin.drr_toname), | |
1480 | "%s@%s", zhp->zfs_name, tosnap); | |
1481 | drr.drr_payloadlen = buflen; | |
1482 | err = cksum_and_write(&drr, sizeof (drr), &zc, outfd); | |
1483 | ||
1484 | /* write header nvlist */ | |
1485 | if (err != -1 && packbuf != NULL) { | |
1486 | err = cksum_and_write(packbuf, buflen, &zc, | |
1487 | outfd); | |
1488 | } | |
1489 | free(packbuf); | |
1490 | if (err == -1) { | |
1491 | fsavl_destroy(fsavl); | |
1492 | nvlist_free(fss); | |
1493 | err = errno; | |
1494 | goto stderr_out; | |
1495 | } | |
34dc7c2f | 1496 | |
330d06f9 | 1497 | /* write end record */ |
34dc7c2f BB |
1498 | bzero(&drr, sizeof (drr)); |
1499 | drr.drr_type = DRR_END; | |
1500 | drr.drr_u.drr_end.drr_checksum = zc; | |
1501 | err = write(outfd, &drr, sizeof (drr)); | |
1502 | if (err == -1) { | |
1503 | fsavl_destroy(fsavl); | |
1504 | nvlist_free(fss); | |
428870ff | 1505 | err = errno; |
428870ff | 1506 | goto stderr_out; |
34dc7c2f | 1507 | } |
330d06f9 MA |
1508 | |
1509 | err = 0; | |
34dc7c2f BB |
1510 | } |
1511 | } | |
1512 | ||
1513 | /* dump each stream */ | |
1514 | sdd.fromsnap = fromsnap; | |
1515 | sdd.tosnap = tosnap; | |
330d06f9 | 1516 | if (flags->dedup) |
428870ff BB |
1517 | sdd.outfd = pipefd[0]; |
1518 | else | |
1519 | sdd.outfd = outfd; | |
330d06f9 MA |
1520 | sdd.replicate = flags->replicate; |
1521 | sdd.doall = flags->doall; | |
1522 | sdd.fromorigin = flags->fromorigin; | |
34dc7c2f BB |
1523 | sdd.fss = fss; |
1524 | sdd.fsavl = fsavl; | |
330d06f9 MA |
1525 | sdd.verbose = flags->verbose; |
1526 | sdd.parsable = flags->parsable; | |
37abac6d | 1527 | sdd.progress = flags->progress; |
330d06f9 | 1528 | sdd.dryrun = flags->dryrun; |
428870ff BB |
1529 | sdd.filter_cb = filter_func; |
1530 | sdd.filter_cb_arg = cb_arg; | |
1531 | if (debugnvp) | |
1532 | sdd.debugnv = *debugnvp; | |
e956d651 CS |
1533 | |
1534 | /* | |
1535 | * Some flags require that we place user holds on the datasets that are | |
1536 | * being sent so they don't get destroyed during the send. We can skip | |
1537 | * this step if the pool is imported read-only since the datasets cannot | |
1538 | * be destroyed. | |
1539 | */ | |
1540 | if (!flags->dryrun && !zpool_get_prop_int(zfs_get_pool_handle(zhp), | |
1541 | ZPOOL_PROP_READONLY, NULL) && | |
1542 | zfs_spa_version(zhp, &spa_version) == 0 && | |
1543 | spa_version >= SPA_VERSION_USERREFS && | |
1544 | (flags->doall || flags->replicate)) { | |
572e2857 BB |
1545 | ++holdseq; |
1546 | (void) snprintf(sdd.holdtag, sizeof (sdd.holdtag), | |
1547 | ".send-%d-%llu", getpid(), (u_longlong_t)holdseq); | |
325f0235 | 1548 | sdd.cleanup_fd = open(ZFS_DEV, O_RDWR); |
572e2857 BB |
1549 | if (sdd.cleanup_fd < 0) { |
1550 | err = errno; | |
1551 | goto stderr_out; | |
1552 | } | |
1553 | } else { | |
1554 | sdd.cleanup_fd = -1; | |
1555 | } | |
330d06f9 MA |
1556 | if (flags->verbose) { |
1557 | /* | |
1558 | * Do a verbose no-op dry run to get all the verbose output | |
1559 | * before generating any data. Then do a non-verbose real | |
1560 | * run to generate the streams. | |
1561 | */ | |
1562 | sdd.dryrun = B_TRUE; | |
1563 | err = dump_filesystems(zhp, &sdd); | |
1564 | sdd.dryrun = flags->dryrun; | |
1565 | sdd.verbose = B_FALSE; | |
1566 | if (flags->parsable) { | |
1567 | (void) fprintf(stderr, "size\t%llu\n", | |
1568 | (longlong_t)sdd.size); | |
1569 | } else { | |
1570 | char buf[16]; | |
1571 | zfs_nicenum(sdd.size, buf, sizeof (buf)); | |
1572 | (void) fprintf(stderr, dgettext(TEXT_DOMAIN, | |
1573 | "total estimated size is %s\n"), buf); | |
1574 | } | |
1575 | } | |
34dc7c2f BB |
1576 | err = dump_filesystems(zhp, &sdd); |
1577 | fsavl_destroy(fsavl); | |
1578 | nvlist_free(fss); | |
1579 | ||
330d06f9 | 1580 | if (flags->dedup) { |
428870ff BB |
1581 | (void) close(pipefd[0]); |
1582 | (void) pthread_join(tid, NULL); | |
1583 | } | |
1584 | ||
572e2857 BB |
1585 | if (sdd.cleanup_fd != -1) { |
1586 | VERIFY(0 == close(sdd.cleanup_fd)); | |
1587 | sdd.cleanup_fd = -1; | |
1588 | } | |
1589 | ||
330d06f9 MA |
1590 | if (!flags->dryrun && (flags->replicate || flags->doall || |
1591 | flags->props)) { | |
34dc7c2f BB |
1592 | /* |
1593 | * write final end record. NB: want to do this even if | |
1594 | * there was some error, because it might not be totally | |
1595 | * failed. | |
1596 | */ | |
1597 | dmu_replay_record_t drr = { 0 }; | |
1598 | drr.drr_type = DRR_END; | |
1599 | if (write(outfd, &drr, sizeof (drr)) == -1) { | |
1600 | return (zfs_standard_error(zhp->zfs_hdl, | |
1601 | errno, errbuf)); | |
1602 | } | |
1603 | } | |
1604 | ||
1605 | return (err || sdd.err); | |
428870ff BB |
1606 | |
1607 | stderr_out: | |
1608 | err = zfs_standard_error(zhp->zfs_hdl, err, errbuf); | |
1609 | err_out: | |
572e2857 BB |
1610 | if (sdd.cleanup_fd != -1) |
1611 | VERIFY(0 == close(sdd.cleanup_fd)); | |
330d06f9 | 1612 | if (flags->dedup) { |
428870ff BB |
1613 | (void) pthread_cancel(tid); |
1614 | (void) pthread_join(tid, NULL); | |
1615 | (void) close(pipefd[0]); | |
1616 | } | |
1617 | return (err); | |
34dc7c2f BB |
1618 | } |
1619 | ||
1620 | /* | |
1621 | * Routines specific to "zfs recv" | |
1622 | */ | |
1623 | ||
1624 | static int | |
1625 | recv_read(libzfs_handle_t *hdl, int fd, void *buf, int ilen, | |
1626 | boolean_t byteswap, zio_cksum_t *zc) | |
1627 | { | |
1628 | char *cp = buf; | |
1629 | int rv; | |
1630 | int len = ilen; | |
1631 | ||
1632 | do { | |
1633 | rv = read(fd, cp, len); | |
1634 | cp += rv; | |
1635 | len -= rv; | |
1636 | } while (rv > 0); | |
1637 | ||
1638 | if (rv < 0 || len != 0) { | |
1639 | zfs_error_aux(hdl, dgettext(TEXT_DOMAIN, | |
1640 | "failed to read from stream")); | |
1641 | return (zfs_error(hdl, EZFS_BADSTREAM, dgettext(TEXT_DOMAIN, | |
1642 | "cannot receive"))); | |
1643 | } | |
1644 | ||
1645 | if (zc) { | |
1646 | if (byteswap) | |
1647 | fletcher_4_incremental_byteswap(buf, ilen, zc); | |
1648 | else | |
1649 | fletcher_4_incremental_native(buf, ilen, zc); | |
1650 | } | |
1651 | return (0); | |
1652 | } | |
1653 | ||
1654 | static int | |
1655 | recv_read_nvlist(libzfs_handle_t *hdl, int fd, int len, nvlist_t **nvp, | |
1656 | boolean_t byteswap, zio_cksum_t *zc) | |
1657 | { | |
1658 | char *buf; | |
1659 | int err; | |
1660 | ||
1661 | buf = zfs_alloc(hdl, len); | |
1662 | if (buf == NULL) | |
1663 | return (ENOMEM); | |
1664 | ||
1665 | err = recv_read(hdl, fd, buf, len, byteswap, zc); | |
1666 | if (err != 0) { | |
1667 | free(buf); | |
1668 | return (err); | |
1669 | } | |
1670 | ||
1671 | err = nvlist_unpack(buf, len, nvp, 0); | |
1672 | free(buf); | |
1673 | if (err != 0) { | |
1674 | zfs_error_aux(hdl, dgettext(TEXT_DOMAIN, "invalid " | |
1675 | "stream (malformed nvlist)")); | |
1676 | return (EINVAL); | |
1677 | } | |
1678 | return (0); | |
1679 | } | |
1680 | ||
1681 | static int | |
1682 | recv_rename(libzfs_handle_t *hdl, const char *name, const char *tryname, | |
330d06f9 | 1683 | int baselen, char *newname, recvflags_t *flags) |
34dc7c2f BB |
1684 | { |
1685 | static int seq; | |
2598c001 | 1686 | zfs_cmd_t zc = { "\0", "\0", "\0", "\0", 0 }; |
34dc7c2f BB |
1687 | int err; |
1688 | prop_changelist_t *clp; | |
1689 | zfs_handle_t *zhp; | |
1690 | ||
1691 | zhp = zfs_open(hdl, name, ZFS_TYPE_DATASET); | |
1692 | if (zhp == NULL) | |
1693 | return (-1); | |
b128c09f | 1694 | clp = changelist_gather(zhp, ZFS_PROP_NAME, 0, |
330d06f9 | 1695 | flags->force ? MS_FORCE : 0); |
34dc7c2f BB |
1696 | zfs_close(zhp); |
1697 | if (clp == NULL) | |
1698 | return (-1); | |
1699 | err = changelist_prefix(clp); | |
1700 | if (err) | |
1701 | return (err); | |
1702 | ||
45d1cae3 BB |
1703 | zc.zc_objset_type = DMU_OST_ZFS; |
1704 | (void) strlcpy(zc.zc_name, name, sizeof (zc.zc_name)); | |
1705 | ||
34dc7c2f BB |
1706 | if (tryname) { |
1707 | (void) strcpy(newname, tryname); | |
1708 | ||
34dc7c2f BB |
1709 | (void) strlcpy(zc.zc_value, tryname, sizeof (zc.zc_value)); |
1710 | ||
330d06f9 | 1711 | if (flags->verbose) { |
34dc7c2f BB |
1712 | (void) printf("attempting rename %s to %s\n", |
1713 | zc.zc_name, zc.zc_value); | |
1714 | } | |
1715 | err = ioctl(hdl->libzfs_fd, ZFS_IOC_RENAME, &zc); | |
1716 | if (err == 0) | |
1717 | changelist_rename(clp, name, tryname); | |
1718 | } else { | |
1719 | err = ENOENT; | |
1720 | } | |
1721 | ||
1722 | if (err != 0 && strncmp(name+baselen, "recv-", 5) != 0) { | |
1723 | seq++; | |
1724 | ||
1725 | (void) strncpy(newname, name, baselen); | |
1726 | (void) snprintf(newname+baselen, ZFS_MAXNAMELEN-baselen, | |
b8864a23 | 1727 | "recv-%ld-%u", (long) getpid(), seq); |
34dc7c2f BB |
1728 | (void) strlcpy(zc.zc_value, newname, sizeof (zc.zc_value)); |
1729 | ||
330d06f9 | 1730 | if (flags->verbose) { |
34dc7c2f BB |
1731 | (void) printf("failed - trying rename %s to %s\n", |
1732 | zc.zc_name, zc.zc_value); | |
1733 | } | |
1734 | err = ioctl(hdl->libzfs_fd, ZFS_IOC_RENAME, &zc); | |
1735 | if (err == 0) | |
1736 | changelist_rename(clp, name, newname); | |
330d06f9 | 1737 | if (err && flags->verbose) { |
34dc7c2f BB |
1738 | (void) printf("failed (%u) - " |
1739 | "will try again on next pass\n", errno); | |
1740 | } | |
1741 | err = EAGAIN; | |
330d06f9 | 1742 | } else if (flags->verbose) { |
34dc7c2f BB |
1743 | if (err == 0) |
1744 | (void) printf("success\n"); | |
1745 | else | |
1746 | (void) printf("failed (%u)\n", errno); | |
1747 | } | |
1748 | ||
1749 | (void) changelist_postfix(clp); | |
1750 | changelist_free(clp); | |
1751 | ||
1752 | return (err); | |
1753 | } | |
1754 | ||
1755 | static int | |
1756 | recv_destroy(libzfs_handle_t *hdl, const char *name, int baselen, | |
330d06f9 | 1757 | char *newname, recvflags_t *flags) |
34dc7c2f | 1758 | { |
2598c001 | 1759 | zfs_cmd_t zc = { "\0", "\0", "\0", "\0", 0 }; |
34dc7c2f BB |
1760 | int err = 0; |
1761 | prop_changelist_t *clp; | |
1762 | zfs_handle_t *zhp; | |
45d1cae3 BB |
1763 | boolean_t defer = B_FALSE; |
1764 | int spa_version; | |
34dc7c2f BB |
1765 | |
1766 | zhp = zfs_open(hdl, name, ZFS_TYPE_DATASET); | |
1767 | if (zhp == NULL) | |
1768 | return (-1); | |
b128c09f | 1769 | clp = changelist_gather(zhp, ZFS_PROP_NAME, 0, |
330d06f9 | 1770 | flags->force ? MS_FORCE : 0); |
45d1cae3 BB |
1771 | if (zfs_get_type(zhp) == ZFS_TYPE_SNAPSHOT && |
1772 | zfs_spa_version(zhp, &spa_version) == 0 && | |
1773 | spa_version >= SPA_VERSION_USERREFS) | |
1774 | defer = B_TRUE; | |
34dc7c2f BB |
1775 | zfs_close(zhp); |
1776 | if (clp == NULL) | |
1777 | return (-1); | |
1778 | err = changelist_prefix(clp); | |
1779 | if (err) | |
1780 | return (err); | |
1781 | ||
1782 | zc.zc_objset_type = DMU_OST_ZFS; | |
45d1cae3 | 1783 | zc.zc_defer_destroy = defer; |
34dc7c2f BB |
1784 | (void) strlcpy(zc.zc_name, name, sizeof (zc.zc_name)); |
1785 | ||
330d06f9 | 1786 | if (flags->verbose) |
34dc7c2f BB |
1787 | (void) printf("attempting destroy %s\n", zc.zc_name); |
1788 | err = ioctl(hdl->libzfs_fd, ZFS_IOC_DESTROY, &zc); | |
34dc7c2f | 1789 | if (err == 0) { |
330d06f9 | 1790 | if (flags->verbose) |
34dc7c2f BB |
1791 | (void) printf("success\n"); |
1792 | changelist_remove(clp, zc.zc_name); | |
1793 | } | |
1794 | ||
1795 | (void) changelist_postfix(clp); | |
1796 | changelist_free(clp); | |
1797 | ||
45d1cae3 | 1798 | /* |
428870ff BB |
1799 | * Deferred destroy might destroy the snapshot or only mark it to be |
1800 | * destroyed later, and it returns success in either case. | |
45d1cae3 | 1801 | */ |
428870ff BB |
1802 | if (err != 0 || (defer && zfs_dataset_exists(hdl, name, |
1803 | ZFS_TYPE_SNAPSHOT))) { | |
34dc7c2f | 1804 | err = recv_rename(hdl, name, NULL, baselen, newname, flags); |
428870ff | 1805 | } |
34dc7c2f BB |
1806 | |
1807 | return (err); | |
1808 | } | |
1809 | ||
1810 | typedef struct guid_to_name_data { | |
1811 | uint64_t guid; | |
1812 | char *name; | |
330d06f9 | 1813 | char *skip; |
34dc7c2f BB |
1814 | } guid_to_name_data_t; |
1815 | ||
1816 | static int | |
1817 | guid_to_name_cb(zfs_handle_t *zhp, void *arg) | |
1818 | { | |
1819 | guid_to_name_data_t *gtnd = arg; | |
1820 | int err; | |
1821 | ||
330d06f9 MA |
1822 | if (gtnd->skip != NULL && |
1823 | strcmp(zhp->zfs_name, gtnd->skip) == 0) { | |
1824 | return (0); | |
1825 | } | |
1826 | ||
34dc7c2f BB |
1827 | if (zhp->zfs_dmustats.dds_guid == gtnd->guid) { |
1828 | (void) strcpy(gtnd->name, zhp->zfs_name); | |
428870ff | 1829 | zfs_close(zhp); |
34dc7c2f BB |
1830 | return (EEXIST); |
1831 | } | |
330d06f9 | 1832 | |
34dc7c2f BB |
1833 | err = zfs_iter_children(zhp, guid_to_name_cb, gtnd); |
1834 | zfs_close(zhp); | |
1835 | return (err); | |
1836 | } | |
1837 | ||
330d06f9 MA |
1838 | /* |
1839 | * Attempt to find the local dataset associated with this guid. In the case of | |
1840 | * multiple matches, we attempt to find the "best" match by searching | |
1841 | * progressively larger portions of the hierarchy. This allows one to send a | |
1842 | * tree of datasets individually and guarantee that we will find the source | |
1843 | * guid within that hierarchy, even if there are multiple matches elsewhere. | |
1844 | */ | |
34dc7c2f BB |
1845 | static int |
1846 | guid_to_name(libzfs_handle_t *hdl, const char *parent, uint64_t guid, | |
1847 | char *name) | |
1848 | { | |
1849 | /* exhaustive search all local snapshots */ | |
330d06f9 | 1850 | char pname[ZFS_MAXNAMELEN]; |
34dc7c2f BB |
1851 | guid_to_name_data_t gtnd; |
1852 | int err = 0; | |
1853 | zfs_handle_t *zhp; | |
1854 | char *cp; | |
1855 | ||
1856 | gtnd.guid = guid; | |
1857 | gtnd.name = name; | |
330d06f9 | 1858 | gtnd.skip = NULL; |
34dc7c2f | 1859 | |
330d06f9 | 1860 | (void) strlcpy(pname, parent, sizeof (pname)); |
34dc7c2f | 1861 | |
330d06f9 MA |
1862 | /* |
1863 | * Search progressively larger portions of the hierarchy. This will | |
1864 | * select the "most local" version of the origin snapshot in the case | |
1865 | * that there are multiple matching snapshots in the system. | |
1866 | */ | |
1867 | while ((cp = strrchr(pname, '/')) != NULL) { | |
1868 | ||
1869 | /* Chop off the last component and open the parent */ | |
34dc7c2f | 1870 | *cp = '\0'; |
330d06f9 MA |
1871 | zhp = make_dataset_handle(hdl, pname); |
1872 | ||
1873 | if (zhp == NULL) | |
1874 | continue; | |
34dc7c2f | 1875 | |
34dc7c2f BB |
1876 | err = zfs_iter_children(zhp, guid_to_name_cb, >nd); |
1877 | zfs_close(zhp); | |
330d06f9 MA |
1878 | if (err == EEXIST) |
1879 | return (0); | |
34dc7c2f | 1880 | |
330d06f9 MA |
1881 | /* |
1882 | * Remember the dataset that we already searched, so we | |
1883 | * skip it next time through. | |
1884 | */ | |
1885 | gtnd.skip = pname; | |
1886 | } | |
34dc7c2f | 1887 | |
330d06f9 | 1888 | return (ENOENT); |
34dc7c2f BB |
1889 | } |
1890 | ||
1891 | /* | |
330d06f9 MA |
1892 | * Return +1 if guid1 is before guid2, 0 if they are the same, and -1 if |
1893 | * guid1 is after guid2. | |
34dc7c2f BB |
1894 | */ |
1895 | static int | |
1896 | created_before(libzfs_handle_t *hdl, avl_tree_t *avl, | |
1897 | uint64_t guid1, uint64_t guid2) | |
1898 | { | |
1899 | nvlist_t *nvfs; | |
1900 | char *fsname, *snapname; | |
1901 | char buf[ZFS_MAXNAMELEN]; | |
1902 | int rv; | |
330d06f9 MA |
1903 | zfs_handle_t *guid1hdl, *guid2hdl; |
1904 | uint64_t create1, create2; | |
34dc7c2f BB |
1905 | |
1906 | if (guid2 == 0) | |
1907 | return (0); | |
1908 | if (guid1 == 0) | |
1909 | return (1); | |
1910 | ||
1911 | nvfs = fsavl_find(avl, guid1, &snapname); | |
1912 | VERIFY(0 == nvlist_lookup_string(nvfs, "name", &fsname)); | |
1913 | (void) snprintf(buf, sizeof (buf), "%s@%s", fsname, snapname); | |
330d06f9 MA |
1914 | guid1hdl = zfs_open(hdl, buf, ZFS_TYPE_SNAPSHOT); |
1915 | if (guid1hdl == NULL) | |
34dc7c2f BB |
1916 | return (-1); |
1917 | ||
1918 | nvfs = fsavl_find(avl, guid2, &snapname); | |
1919 | VERIFY(0 == nvlist_lookup_string(nvfs, "name", &fsname)); | |
1920 | (void) snprintf(buf, sizeof (buf), "%s@%s", fsname, snapname); | |
330d06f9 MA |
1921 | guid2hdl = zfs_open(hdl, buf, ZFS_TYPE_SNAPSHOT); |
1922 | if (guid2hdl == NULL) { | |
1923 | zfs_close(guid1hdl); | |
34dc7c2f BB |
1924 | return (-1); |
1925 | } | |
1926 | ||
330d06f9 MA |
1927 | create1 = zfs_prop_get_int(guid1hdl, ZFS_PROP_CREATETXG); |
1928 | create2 = zfs_prop_get_int(guid2hdl, ZFS_PROP_CREATETXG); | |
34dc7c2f | 1929 | |
330d06f9 MA |
1930 | if (create1 < create2) |
1931 | rv = -1; | |
1932 | else if (create1 > create2) | |
1933 | rv = +1; | |
1934 | else | |
1935 | rv = 0; | |
1936 | ||
1937 | zfs_close(guid1hdl); | |
1938 | zfs_close(guid2hdl); | |
34dc7c2f BB |
1939 | |
1940 | return (rv); | |
1941 | } | |
1942 | ||
1943 | static int | |
1944 | recv_incremental_replication(libzfs_handle_t *hdl, const char *tofs, | |
330d06f9 | 1945 | recvflags_t *flags, nvlist_t *stream_nv, avl_tree_t *stream_avl, |
428870ff | 1946 | nvlist_t *renamed) |
34dc7c2f BB |
1947 | { |
1948 | nvlist_t *local_nv; | |
1949 | avl_tree_t *local_avl; | |
1950 | nvpair_t *fselem, *nextfselem; | |
428870ff | 1951 | char *fromsnap; |
34dc7c2f BB |
1952 | char newname[ZFS_MAXNAMELEN]; |
1953 | int error; | |
428870ff BB |
1954 | boolean_t needagain, progress, recursive; |
1955 | char *s1, *s2; | |
34dc7c2f BB |
1956 | |
1957 | VERIFY(0 == nvlist_lookup_string(stream_nv, "fromsnap", &fromsnap)); | |
428870ff BB |
1958 | |
1959 | recursive = (nvlist_lookup_boolean(stream_nv, "not_recursive") == | |
1960 | ENOENT); | |
34dc7c2f | 1961 | |
330d06f9 | 1962 | if (flags->dryrun) |
34dc7c2f BB |
1963 | return (0); |
1964 | ||
1965 | again: | |
1966 | needagain = progress = B_FALSE; | |
1967 | ||
1968 | if ((error = gather_nvlist(hdl, tofs, fromsnap, NULL, | |
428870ff | 1969 | recursive, &local_nv, &local_avl)) != 0) |
34dc7c2f BB |
1970 | return (error); |
1971 | ||
1972 | /* | |
1973 | * Process deletes and renames | |
1974 | */ | |
1975 | for (fselem = nvlist_next_nvpair(local_nv, NULL); | |
1976 | fselem; fselem = nextfselem) { | |
1977 | nvlist_t *nvfs, *snaps; | |
1978 | nvlist_t *stream_nvfs = NULL; | |
1979 | nvpair_t *snapelem, *nextsnapelem; | |
1980 | uint64_t fromguid = 0; | |
1981 | uint64_t originguid = 0; | |
1982 | uint64_t stream_originguid = 0; | |
1983 | uint64_t parent_fromsnap_guid, stream_parent_fromsnap_guid; | |
1984 | char *fsname, *stream_fsname; | |
1985 | ||
1986 | nextfselem = nvlist_next_nvpair(local_nv, fselem); | |
1987 | ||
1988 | VERIFY(0 == nvpair_value_nvlist(fselem, &nvfs)); | |
1989 | VERIFY(0 == nvlist_lookup_nvlist(nvfs, "snaps", &snaps)); | |
1990 | VERIFY(0 == nvlist_lookup_string(nvfs, "name", &fsname)); | |
1991 | VERIFY(0 == nvlist_lookup_uint64(nvfs, "parentfromsnap", | |
1992 | &parent_fromsnap_guid)); | |
1993 | (void) nvlist_lookup_uint64(nvfs, "origin", &originguid); | |
1994 | ||
1995 | /* | |
1996 | * First find the stream's fs, so we can check for | |
1997 | * a different origin (due to "zfs promote") | |
1998 | */ | |
1999 | for (snapelem = nvlist_next_nvpair(snaps, NULL); | |
2000 | snapelem; snapelem = nvlist_next_nvpair(snaps, snapelem)) { | |
2001 | uint64_t thisguid; | |
2002 | ||
2003 | VERIFY(0 == nvpair_value_uint64(snapelem, &thisguid)); | |
2004 | stream_nvfs = fsavl_find(stream_avl, thisguid, NULL); | |
2005 | ||
2006 | if (stream_nvfs != NULL) | |
2007 | break; | |
2008 | } | |
2009 | ||
2010 | /* check for promote */ | |
2011 | (void) nvlist_lookup_uint64(stream_nvfs, "origin", | |
2012 | &stream_originguid); | |
2013 | if (stream_nvfs && originguid != stream_originguid) { | |
2014 | switch (created_before(hdl, local_avl, | |
2015 | stream_originguid, originguid)) { | |
2016 | case 1: { | |
2017 | /* promote it! */ | |
2598c001 | 2018 | zfs_cmd_t zc = { "\0", "\0", "\0", "\0", 0 }; |
34dc7c2f BB |
2019 | nvlist_t *origin_nvfs; |
2020 | char *origin_fsname; | |
2021 | ||
330d06f9 | 2022 | if (flags->verbose) |
34dc7c2f BB |
2023 | (void) printf("promoting %s\n", fsname); |
2024 | ||
2025 | origin_nvfs = fsavl_find(local_avl, originguid, | |
2026 | NULL); | |
2027 | VERIFY(0 == nvlist_lookup_string(origin_nvfs, | |
2028 | "name", &origin_fsname)); | |
2029 | (void) strlcpy(zc.zc_value, origin_fsname, | |
2030 | sizeof (zc.zc_value)); | |
2031 | (void) strlcpy(zc.zc_name, fsname, | |
2032 | sizeof (zc.zc_name)); | |
2033 | error = zfs_ioctl(hdl, ZFS_IOC_PROMOTE, &zc); | |
2034 | if (error == 0) | |
2035 | progress = B_TRUE; | |
2036 | break; | |
2037 | } | |
2038 | default: | |
2039 | break; | |
2040 | case -1: | |
2041 | fsavl_destroy(local_avl); | |
2042 | nvlist_free(local_nv); | |
2043 | return (-1); | |
2044 | } | |
2045 | /* | |
2046 | * We had/have the wrong origin, therefore our | |
2047 | * list of snapshots is wrong. Need to handle | |
2048 | * them on the next pass. | |
2049 | */ | |
2050 | needagain = B_TRUE; | |
2051 | continue; | |
2052 | } | |
2053 | ||
2054 | for (snapelem = nvlist_next_nvpair(snaps, NULL); | |
2055 | snapelem; snapelem = nextsnapelem) { | |
2056 | uint64_t thisguid; | |
2057 | char *stream_snapname; | |
b128c09f | 2058 | nvlist_t *found, *props; |
34dc7c2f BB |
2059 | |
2060 | nextsnapelem = nvlist_next_nvpair(snaps, snapelem); | |
2061 | ||
2062 | VERIFY(0 == nvpair_value_uint64(snapelem, &thisguid)); | |
2063 | found = fsavl_find(stream_avl, thisguid, | |
2064 | &stream_snapname); | |
2065 | ||
2066 | /* check for delete */ | |
2067 | if (found == NULL) { | |
2068 | char name[ZFS_MAXNAMELEN]; | |
2069 | ||
330d06f9 | 2070 | if (!flags->force) |
34dc7c2f BB |
2071 | continue; |
2072 | ||
2073 | (void) snprintf(name, sizeof (name), "%s@%s", | |
2074 | fsname, nvpair_name(snapelem)); | |
2075 | ||
2076 | error = recv_destroy(hdl, name, | |
2077 | strlen(fsname)+1, newname, flags); | |
2078 | if (error) | |
2079 | needagain = B_TRUE; | |
2080 | else | |
2081 | progress = B_TRUE; | |
2082 | continue; | |
2083 | } | |
2084 | ||
2085 | stream_nvfs = found; | |
2086 | ||
b128c09f BB |
2087 | if (0 == nvlist_lookup_nvlist(stream_nvfs, "snapprops", |
2088 | &props) && 0 == nvlist_lookup_nvlist(props, | |
2089 | stream_snapname, &props)) { | |
2598c001 | 2090 | zfs_cmd_t zc = { "\0", "\0", "\0", "\0", 0 }; |
b128c09f | 2091 | |
428870ff | 2092 | zc.zc_cookie = B_TRUE; /* received */ |
b128c09f BB |
2093 | (void) snprintf(zc.zc_name, sizeof (zc.zc_name), |
2094 | "%s@%s", fsname, nvpair_name(snapelem)); | |
2095 | if (zcmd_write_src_nvlist(hdl, &zc, | |
2096 | props) == 0) { | |
2097 | (void) zfs_ioctl(hdl, | |
2098 | ZFS_IOC_SET_PROP, &zc); | |
2099 | zcmd_free_nvlists(&zc); | |
2100 | } | |
2101 | } | |
2102 | ||
34dc7c2f BB |
2103 | /* check for different snapname */ |
2104 | if (strcmp(nvpair_name(snapelem), | |
2105 | stream_snapname) != 0) { | |
2106 | char name[ZFS_MAXNAMELEN]; | |
2107 | char tryname[ZFS_MAXNAMELEN]; | |
2108 | ||
2109 | (void) snprintf(name, sizeof (name), "%s@%s", | |
2110 | fsname, nvpair_name(snapelem)); | |
2111 | (void) snprintf(tryname, sizeof (name), "%s@%s", | |
2112 | fsname, stream_snapname); | |
2113 | ||
2114 | error = recv_rename(hdl, name, tryname, | |
2115 | strlen(fsname)+1, newname, flags); | |
2116 | if (error) | |
2117 | needagain = B_TRUE; | |
2118 | else | |
2119 | progress = B_TRUE; | |
2120 | } | |
2121 | ||
2122 | if (strcmp(stream_snapname, fromsnap) == 0) | |
2123 | fromguid = thisguid; | |
2124 | } | |
2125 | ||
2126 | /* check for delete */ | |
2127 | if (stream_nvfs == NULL) { | |
330d06f9 | 2128 | if (!flags->force) |
34dc7c2f BB |
2129 | continue; |
2130 | ||
2131 | error = recv_destroy(hdl, fsname, strlen(tofs)+1, | |
2132 | newname, flags); | |
2133 | if (error) | |
2134 | needagain = B_TRUE; | |
2135 | else | |
2136 | progress = B_TRUE; | |
2137 | continue; | |
2138 | } | |
2139 | ||
428870ff | 2140 | if (fromguid == 0) { |
330d06f9 | 2141 | if (flags->verbose) { |
428870ff BB |
2142 | (void) printf("local fs %s does not have " |
2143 | "fromsnap (%s in stream); must have " | |
2144 | "been deleted locally; ignoring\n", | |
2145 | fsname, fromsnap); | |
2146 | } | |
34dc7c2f BB |
2147 | continue; |
2148 | } | |
2149 | ||
2150 | VERIFY(0 == nvlist_lookup_string(stream_nvfs, | |
2151 | "name", &stream_fsname)); | |
2152 | VERIFY(0 == nvlist_lookup_uint64(stream_nvfs, | |
2153 | "parentfromsnap", &stream_parent_fromsnap_guid)); | |
2154 | ||
428870ff BB |
2155 | s1 = strrchr(fsname, '/'); |
2156 | s2 = strrchr(stream_fsname, '/'); | |
2157 | ||
2158 | /* | |
2159 | * Check for rename. If the exact receive path is specified, it | |
2160 | * does not count as a rename, but we still need to check the | |
2161 | * datasets beneath it. | |
2162 | */ | |
34dc7c2f | 2163 | if ((stream_parent_fromsnap_guid != 0 && |
428870ff | 2164 | parent_fromsnap_guid != 0 && |
34dc7c2f | 2165 | stream_parent_fromsnap_guid != parent_fromsnap_guid) || |
330d06f9 | 2166 | ((flags->isprefix || strcmp(tofs, fsname) != 0) && |
428870ff | 2167 | (s1 != NULL) && (s2 != NULL) && strcmp(s1, s2) != 0)) { |
34dc7c2f BB |
2168 | nvlist_t *parent; |
2169 | char tryname[ZFS_MAXNAMELEN]; | |
2170 | ||
2171 | parent = fsavl_find(local_avl, | |
2172 | stream_parent_fromsnap_guid, NULL); | |
2173 | /* | |
2174 | * NB: parent might not be found if we used the | |
2175 | * tosnap for stream_parent_fromsnap_guid, | |
2176 | * because the parent is a newly-created fs; | |
2177 | * we'll be able to rename it after we recv the | |
2178 | * new fs. | |
2179 | */ | |
2180 | if (parent != NULL) { | |
2181 | char *pname; | |
2182 | ||
2183 | VERIFY(0 == nvlist_lookup_string(parent, "name", | |
2184 | &pname)); | |
2185 | (void) snprintf(tryname, sizeof (tryname), | |
2186 | "%s%s", pname, strrchr(stream_fsname, '/')); | |
2187 | } else { | |
2188 | tryname[0] = '\0'; | |
330d06f9 | 2189 | if (flags->verbose) { |
34dc7c2f BB |
2190 | (void) printf("local fs %s new parent " |
2191 | "not found\n", fsname); | |
2192 | } | |
2193 | } | |
2194 | ||
428870ff BB |
2195 | newname[0] = '\0'; |
2196 | ||
34dc7c2f BB |
2197 | error = recv_rename(hdl, fsname, tryname, |
2198 | strlen(tofs)+1, newname, flags); | |
428870ff BB |
2199 | |
2200 | if (renamed != NULL && newname[0] != '\0') { | |
2201 | VERIFY(0 == nvlist_add_boolean(renamed, | |
2202 | newname)); | |
2203 | } | |
2204 | ||
34dc7c2f BB |
2205 | if (error) |
2206 | needagain = B_TRUE; | |
2207 | else | |
2208 | progress = B_TRUE; | |
2209 | } | |
2210 | } | |
2211 | ||
2212 | fsavl_destroy(local_avl); | |
2213 | nvlist_free(local_nv); | |
2214 | ||
2215 | if (needagain && progress) { | |
2216 | /* do another pass to fix up temporary names */ | |
330d06f9 | 2217 | if (flags->verbose) |
34dc7c2f BB |
2218 | (void) printf("another pass:\n"); |
2219 | goto again; | |
2220 | } | |
2221 | ||
2222 | return (needagain); | |
2223 | } | |
2224 | ||
2225 | static int | |
2226 | zfs_receive_package(libzfs_handle_t *hdl, int fd, const char *destname, | |
330d06f9 | 2227 | recvflags_t *flags, dmu_replay_record_t *drr, zio_cksum_t *zc, |
572e2857 | 2228 | char **top_zfs, int cleanup_fd, uint64_t *action_handlep) |
34dc7c2f BB |
2229 | { |
2230 | nvlist_t *stream_nv = NULL; | |
2231 | avl_tree_t *stream_avl = NULL; | |
2232 | char *fromsnap = NULL; | |
428870ff | 2233 | char *cp; |
34dc7c2f | 2234 | char tofs[ZFS_MAXNAMELEN]; |
428870ff | 2235 | char sendfs[ZFS_MAXNAMELEN]; |
34dc7c2f BB |
2236 | char errbuf[1024]; |
2237 | dmu_replay_record_t drre; | |
2238 | int error; | |
2239 | boolean_t anyerr = B_FALSE; | |
2240 | boolean_t softerr = B_FALSE; | |
428870ff | 2241 | boolean_t recursive; |
34dc7c2f BB |
2242 | |
2243 | (void) snprintf(errbuf, sizeof (errbuf), dgettext(TEXT_DOMAIN, | |
2244 | "cannot receive")); | |
2245 | ||
34dc7c2f BB |
2246 | assert(drr->drr_type == DRR_BEGIN); |
2247 | assert(drr->drr_u.drr_begin.drr_magic == DMU_BACKUP_MAGIC); | |
428870ff BB |
2248 | assert(DMU_GET_STREAM_HDRTYPE(drr->drr_u.drr_begin.drr_versioninfo) == |
2249 | DMU_COMPOUNDSTREAM); | |
34dc7c2f BB |
2250 | |
2251 | /* | |
2252 | * Read in the nvlist from the stream. | |
2253 | */ | |
2254 | if (drr->drr_payloadlen != 0) { | |
34dc7c2f | 2255 | error = recv_read_nvlist(hdl, fd, drr->drr_payloadlen, |
330d06f9 | 2256 | &stream_nv, flags->byteswap, zc); |
34dc7c2f BB |
2257 | if (error) { |
2258 | error = zfs_error(hdl, EZFS_BADSTREAM, errbuf); | |
2259 | goto out; | |
2260 | } | |
2261 | } | |
2262 | ||
428870ff BB |
2263 | recursive = (nvlist_lookup_boolean(stream_nv, "not_recursive") == |
2264 | ENOENT); | |
2265 | ||
2266 | if (recursive && strchr(destname, '@')) { | |
2267 | zfs_error_aux(hdl, dgettext(TEXT_DOMAIN, | |
2268 | "cannot specify snapshot name for multi-snapshot stream")); | |
2269 | error = zfs_error(hdl, EZFS_BADSTREAM, errbuf); | |
2270 | goto out; | |
2271 | } | |
2272 | ||
34dc7c2f BB |
2273 | /* |
2274 | * Read in the end record and verify checksum. | |
2275 | */ | |
2276 | if (0 != (error = recv_read(hdl, fd, &drre, sizeof (drre), | |
330d06f9 | 2277 | flags->byteswap, NULL))) |
34dc7c2f | 2278 | goto out; |
330d06f9 | 2279 | if (flags->byteswap) { |
34dc7c2f BB |
2280 | drre.drr_type = BSWAP_32(drre.drr_type); |
2281 | drre.drr_u.drr_end.drr_checksum.zc_word[0] = | |
2282 | BSWAP_64(drre.drr_u.drr_end.drr_checksum.zc_word[0]); | |
2283 | drre.drr_u.drr_end.drr_checksum.zc_word[1] = | |
2284 | BSWAP_64(drre.drr_u.drr_end.drr_checksum.zc_word[1]); | |
2285 | drre.drr_u.drr_end.drr_checksum.zc_word[2] = | |
2286 | BSWAP_64(drre.drr_u.drr_end.drr_checksum.zc_word[2]); | |
2287 | drre.drr_u.drr_end.drr_checksum.zc_word[3] = | |
2288 | BSWAP_64(drre.drr_u.drr_end.drr_checksum.zc_word[3]); | |
2289 | } | |
2290 | if (drre.drr_type != DRR_END) { | |
2291 | error = zfs_error(hdl, EZFS_BADSTREAM, errbuf); | |
2292 | goto out; | |
2293 | } | |
2294 | if (!ZIO_CHECKSUM_EQUAL(drre.drr_u.drr_end.drr_checksum, *zc)) { | |
2295 | zfs_error_aux(hdl, dgettext(TEXT_DOMAIN, | |
2296 | "incorrect header checksum")); | |
2297 | error = zfs_error(hdl, EZFS_BADSTREAM, errbuf); | |
2298 | goto out; | |
2299 | } | |
2300 | ||
2301 | (void) nvlist_lookup_string(stream_nv, "fromsnap", &fromsnap); | |
2302 | ||
2303 | if (drr->drr_payloadlen != 0) { | |
2304 | nvlist_t *stream_fss; | |
2305 | ||
2306 | VERIFY(0 == nvlist_lookup_nvlist(stream_nv, "fss", | |
2307 | &stream_fss)); | |
2308 | if ((stream_avl = fsavl_create(stream_fss)) == NULL) { | |
2309 | zfs_error_aux(hdl, dgettext(TEXT_DOMAIN, | |
2310 | "couldn't allocate avl tree")); | |
2311 | error = zfs_error(hdl, EZFS_NOMEM, errbuf); | |
2312 | goto out; | |
2313 | } | |
2314 | ||
2315 | if (fromsnap != NULL) { | |
428870ff BB |
2316 | nvlist_t *renamed = NULL; |
2317 | nvpair_t *pair = NULL; | |
2318 | ||
34dc7c2f | 2319 | (void) strlcpy(tofs, destname, ZFS_MAXNAMELEN); |
330d06f9 | 2320 | if (flags->isprefix) { |
428870ff BB |
2321 | struct drr_begin *drrb = &drr->drr_u.drr_begin; |
2322 | int i; | |
2323 | ||
330d06f9 | 2324 | if (flags->istail) { |
428870ff BB |
2325 | cp = strrchr(drrb->drr_toname, '/'); |
2326 | if (cp == NULL) { | |
2327 | (void) strlcat(tofs, "/", | |
2328 | ZFS_MAXNAMELEN); | |
2329 | i = 0; | |
2330 | } else { | |
2331 | i = (cp - drrb->drr_toname); | |
2332 | } | |
2333 | } else { | |
2334 | i = strcspn(drrb->drr_toname, "/@"); | |
2335 | } | |
34dc7c2f | 2336 | /* zfs_receive_one() will create_parents() */ |
428870ff | 2337 | (void) strlcat(tofs, &drrb->drr_toname[i], |
34dc7c2f BB |
2338 | ZFS_MAXNAMELEN); |
2339 | *strchr(tofs, '@') = '\0'; | |
2340 | } | |
428870ff | 2341 | |
330d06f9 | 2342 | if (recursive && !flags->dryrun && !flags->nomount) { |
428870ff BB |
2343 | VERIFY(0 == nvlist_alloc(&renamed, |
2344 | NV_UNIQUE_NAME, 0)); | |
2345 | } | |
2346 | ||
2347 | softerr = recv_incremental_replication(hdl, tofs, flags, | |
2348 | stream_nv, stream_avl, renamed); | |
2349 | ||
2350 | /* Unmount renamed filesystems before receiving. */ | |
2351 | while ((pair = nvlist_next_nvpair(renamed, | |
2352 | pair)) != NULL) { | |
2353 | zfs_handle_t *zhp; | |
2354 | prop_changelist_t *clp = NULL; | |
2355 | ||
2356 | zhp = zfs_open(hdl, nvpair_name(pair), | |
2357 | ZFS_TYPE_FILESYSTEM); | |
2358 | if (zhp != NULL) { | |
2359 | clp = changelist_gather(zhp, | |
2360 | ZFS_PROP_MOUNTPOINT, 0, 0); | |
2361 | zfs_close(zhp); | |
2362 | if (clp != NULL) { | |
2363 | softerr |= | |
2364 | changelist_prefix(clp); | |
2365 | changelist_free(clp); | |
2366 | } | |
2367 | } | |
2368 | } | |
2369 | ||
2370 | nvlist_free(renamed); | |
34dc7c2f BB |
2371 | } |
2372 | } | |
2373 | ||
428870ff BB |
2374 | /* |
2375 | * Get the fs specified by the first path in the stream (the top level | |
2376 | * specified by 'zfs send') and pass it to each invocation of | |
2377 | * zfs_receive_one(). | |
2378 | */ | |
2379 | (void) strlcpy(sendfs, drr->drr_u.drr_begin.drr_toname, | |
2380 | ZFS_MAXNAMELEN); | |
2381 | if ((cp = strchr(sendfs, '@')) != NULL) | |
2382 | *cp = '\0'; | |
34dc7c2f BB |
2383 | |
2384 | /* Finally, receive each contained stream */ | |
2385 | do { | |
2386 | /* | |
2387 | * we should figure out if it has a recoverable | |
2388 | * error, in which case do a recv_skip() and drive on. | |
2389 | * Note, if we fail due to already having this guid, | |
2390 | * zfs_receive_one() will take care of it (ie, | |
2391 | * recv_skip() and return 0). | |
2392 | */ | |
b128c09f | 2393 | error = zfs_receive_impl(hdl, destname, flags, fd, |
572e2857 BB |
2394 | sendfs, stream_nv, stream_avl, top_zfs, cleanup_fd, |
2395 | action_handlep); | |
34dc7c2f BB |
2396 | if (error == ENODATA) { |
2397 | error = 0; | |
2398 | break; | |
2399 | } | |
2400 | anyerr |= error; | |
2401 | } while (error == 0); | |
2402 | ||
2403 | if (drr->drr_payloadlen != 0 && fromsnap != NULL) { | |
2404 | /* | |
2405 | * Now that we have the fs's they sent us, try the | |
2406 | * renames again. | |
2407 | */ | |
2408 | softerr = recv_incremental_replication(hdl, tofs, flags, | |
428870ff | 2409 | stream_nv, stream_avl, NULL); |
34dc7c2f BB |
2410 | } |
2411 | ||
2412 | out: | |
2413 | fsavl_destroy(stream_avl); | |
2414 | if (stream_nv) | |
2415 | nvlist_free(stream_nv); | |
2416 | if (softerr) | |
2417 | error = -2; | |
2418 | if (anyerr) | |
2419 | error = -1; | |
2420 | return (error); | |
2421 | } | |
2422 | ||
428870ff BB |
2423 | static void |
2424 | trunc_prop_errs(int truncated) | |
2425 | { | |
2426 | ASSERT(truncated != 0); | |
2427 | ||
2428 | if (truncated == 1) | |
2429 | (void) fprintf(stderr, dgettext(TEXT_DOMAIN, | |
2430 | "1 more property could not be set\n")); | |
2431 | else | |
2432 | (void) fprintf(stderr, dgettext(TEXT_DOMAIN, | |
2433 | "%d more properties could not be set\n"), truncated); | |
2434 | } | |
2435 | ||
34dc7c2f BB |
2436 | static int |
2437 | recv_skip(libzfs_handle_t *hdl, int fd, boolean_t byteswap) | |
2438 | { | |
2439 | dmu_replay_record_t *drr; | |
2440 | void *buf = malloc(1<<20); | |
428870ff BB |
2441 | char errbuf[1024]; |
2442 | ||
2443 | (void) snprintf(errbuf, sizeof (errbuf), dgettext(TEXT_DOMAIN, | |
2444 | "cannot receive:")); | |
34dc7c2f BB |
2445 | |
2446 | /* XXX would be great to use lseek if possible... */ | |
2447 | drr = buf; | |
2448 | ||
2449 | while (recv_read(hdl, fd, drr, sizeof (dmu_replay_record_t), | |
2450 | byteswap, NULL) == 0) { | |
2451 | if (byteswap) | |
2452 | drr->drr_type = BSWAP_32(drr->drr_type); | |
2453 | ||
2454 | switch (drr->drr_type) { | |
2455 | case DRR_BEGIN: | |
2456 | /* NB: not to be used on v2 stream packages */ | |
428870ff BB |
2457 | if (drr->drr_payloadlen != 0) { |
2458 | zfs_error_aux(hdl, dgettext(TEXT_DOMAIN, | |
2459 | "invalid substream header")); | |
2460 | return (zfs_error(hdl, EZFS_BADSTREAM, errbuf)); | |
2461 | } | |
34dc7c2f BB |
2462 | break; |
2463 | ||
2464 | case DRR_END: | |
2465 | free(buf); | |
2466 | return (0); | |
2467 | ||
2468 | case DRR_OBJECT: | |
2469 | if (byteswap) { | |
2470 | drr->drr_u.drr_object.drr_bonuslen = | |
2471 | BSWAP_32(drr->drr_u.drr_object. | |
2472 | drr_bonuslen); | |
2473 | } | |
2474 | (void) recv_read(hdl, fd, buf, | |
2475 | P2ROUNDUP(drr->drr_u.drr_object.drr_bonuslen, 8), | |
2476 | B_FALSE, NULL); | |
2477 | break; | |
2478 | ||
2479 | case DRR_WRITE: | |
2480 | if (byteswap) { | |
2481 | drr->drr_u.drr_write.drr_length = | |
b128c09f | 2482 | BSWAP_64(drr->drr_u.drr_write.drr_length); |
34dc7c2f BB |
2483 | } |
2484 | (void) recv_read(hdl, fd, buf, | |
2485 | drr->drr_u.drr_write.drr_length, B_FALSE, NULL); | |
2486 | break; | |
428870ff BB |
2487 | case DRR_SPILL: |
2488 | if (byteswap) { | |
2489 | drr->drr_u.drr_write.drr_length = | |
2490 | BSWAP_64(drr->drr_u.drr_spill.drr_length); | |
2491 | } | |
2492 | (void) recv_read(hdl, fd, buf, | |
2493 | drr->drr_u.drr_spill.drr_length, B_FALSE, NULL); | |
2494 | break; | |
2495 | case DRR_WRITE_BYREF: | |
34dc7c2f BB |
2496 | case DRR_FREEOBJECTS: |
2497 | case DRR_FREE: | |
2498 | break; | |
2499 | ||
2500 | default: | |
428870ff BB |
2501 | zfs_error_aux(hdl, dgettext(TEXT_DOMAIN, |
2502 | "invalid record type")); | |
2503 | return (zfs_error(hdl, EZFS_BADSTREAM, errbuf)); | |
34dc7c2f BB |
2504 | } |
2505 | } | |
2506 | ||
2507 | free(buf); | |
2508 | return (-1); | |
2509 | } | |
2510 | ||
2511 | /* | |
2512 | * Restores a backup of tosnap from the file descriptor specified by infd. | |
2513 | */ | |
2514 | static int | |
2515 | zfs_receive_one(libzfs_handle_t *hdl, int infd, const char *tosnap, | |
330d06f9 | 2516 | recvflags_t *flags, dmu_replay_record_t *drr, |
428870ff | 2517 | dmu_replay_record_t *drr_noswap, const char *sendfs, |
572e2857 BB |
2518 | nvlist_t *stream_nv, avl_tree_t *stream_avl, char **top_zfs, int cleanup_fd, |
2519 | uint64_t *action_handlep) | |
34dc7c2f | 2520 | { |
2598c001 | 2521 | zfs_cmd_t zc = { "\0", "\0", "\0", "\0", 0 }; |
34dc7c2f | 2522 | time_t begin_time; |
428870ff | 2523 | int ioctl_err, ioctl_errno, err; |
34dc7c2f BB |
2524 | char *cp; |
2525 | struct drr_begin *drrb = &drr->drr_u.drr_begin; | |
2526 | char errbuf[1024]; | |
428870ff BB |
2527 | char prop_errbuf[1024]; |
2528 | const char *chopprefix; | |
34dc7c2f BB |
2529 | boolean_t newfs = B_FALSE; |
2530 | boolean_t stream_wantsnewfs; | |
2531 | uint64_t parent_snapguid = 0; | |
2532 | prop_changelist_t *clp = NULL; | |
b128c09f | 2533 | nvlist_t *snapprops_nvlist = NULL; |
428870ff BB |
2534 | zprop_errflags_t prop_errflags; |
2535 | boolean_t recursive; | |
34dc7c2f BB |
2536 | |
2537 | begin_time = time(NULL); | |
2538 | ||
2539 | (void) snprintf(errbuf, sizeof (errbuf), dgettext(TEXT_DOMAIN, | |
2540 | "cannot receive")); | |
2541 | ||
428870ff BB |
2542 | recursive = (nvlist_lookup_boolean(stream_nv, "not_recursive") == |
2543 | ENOENT); | |
2544 | ||
34dc7c2f | 2545 | if (stream_avl != NULL) { |
b128c09f BB |
2546 | char *snapname; |
2547 | nvlist_t *fs = fsavl_find(stream_avl, drrb->drr_toguid, | |
2548 | &snapname); | |
34dc7c2f BB |
2549 | nvlist_t *props; |
2550 | int ret; | |
2551 | ||
2552 | (void) nvlist_lookup_uint64(fs, "parentfromsnap", | |
2553 | &parent_snapguid); | |
2554 | err = nvlist_lookup_nvlist(fs, "props", &props); | |
2555 | if (err) | |
2556 | VERIFY(0 == nvlist_alloc(&props, NV_UNIQUE_NAME, 0)); | |
2557 | ||
330d06f9 | 2558 | if (flags->canmountoff) { |
34dc7c2f BB |
2559 | VERIFY(0 == nvlist_add_uint64(props, |
2560 | zfs_prop_to_name(ZFS_PROP_CANMOUNT), 0)); | |
2561 | } | |
2562 | ret = zcmd_write_src_nvlist(hdl, &zc, props); | |
2563 | if (err) | |
2564 | nvlist_free(props); | |
2565 | ||
b128c09f BB |
2566 | if (0 == nvlist_lookup_nvlist(fs, "snapprops", &props)) { |
2567 | VERIFY(0 == nvlist_lookup_nvlist(props, | |
2568 | snapname, &snapprops_nvlist)); | |
2569 | } | |
2570 | ||
34dc7c2f BB |
2571 | if (ret != 0) |
2572 | return (-1); | |
2573 | } | |
2574 | ||
428870ff BB |
2575 | cp = NULL; |
2576 | ||
34dc7c2f BB |
2577 | /* |
2578 | * Determine how much of the snapshot name stored in the stream | |
2579 | * we are going to tack on to the name they specified on the | |
2580 | * command line, and how much we are going to chop off. | |
2581 | * | |
2582 | * If they specified a snapshot, chop the entire name stored in | |
2583 | * the stream. | |
2584 | */ | |
330d06f9 | 2585 | if (flags->istail) { |
428870ff BB |
2586 | /* |
2587 | * A filesystem was specified with -e. We want to tack on only | |
2588 | * the tail of the sent snapshot path. | |
2589 | */ | |
2590 | if (strchr(tosnap, '@')) { | |
2591 | zfs_error_aux(hdl, dgettext(TEXT_DOMAIN, "invalid " | |
2592 | "argument - snapshot not allowed with -e")); | |
2593 | return (zfs_error(hdl, EZFS_INVALIDNAME, errbuf)); | |
2594 | } | |
2595 | ||
2596 | chopprefix = strrchr(sendfs, '/'); | |
2597 | ||
2598 | if (chopprefix == NULL) { | |
2599 | /* | |
2600 | * The tail is the poolname, so we need to | |
2601 | * prepend a path separator. | |
2602 | */ | |
2603 | int len = strlen(drrb->drr_toname); | |
2604 | cp = malloc(len + 2); | |
2605 | cp[0] = '/'; | |
2606 | (void) strcpy(&cp[1], drrb->drr_toname); | |
2607 | chopprefix = cp; | |
2608 | } else { | |
2609 | chopprefix = drrb->drr_toname + (chopprefix - sendfs); | |
2610 | } | |
330d06f9 | 2611 | } else if (flags->isprefix) { |
34dc7c2f | 2612 | /* |
428870ff BB |
2613 | * A filesystem was specified with -d. We want to tack on |
2614 | * everything but the first element of the sent snapshot path | |
2615 | * (all but the pool name). | |
34dc7c2f BB |
2616 | */ |
2617 | if (strchr(tosnap, '@')) { | |
2618 | zfs_error_aux(hdl, dgettext(TEXT_DOMAIN, "invalid " | |
2619 | "argument - snapshot not allowed with -d")); | |
2620 | return (zfs_error(hdl, EZFS_INVALIDNAME, errbuf)); | |
2621 | } | |
428870ff BB |
2622 | |
2623 | chopprefix = strchr(drrb->drr_toname, '/'); | |
2624 | if (chopprefix == NULL) | |
2625 | chopprefix = strchr(drrb->drr_toname, '@'); | |
34dc7c2f BB |
2626 | } else if (strchr(tosnap, '@') == NULL) { |
2627 | /* | |
428870ff BB |
2628 | * If a filesystem was specified without -d or -e, we want to |
2629 | * tack on everything after the fs specified by 'zfs send'. | |
34dc7c2f | 2630 | */ |
428870ff BB |
2631 | chopprefix = drrb->drr_toname + strlen(sendfs); |
2632 | } else { | |
2633 | /* A snapshot was specified as an exact path (no -d or -e). */ | |
2634 | if (recursive) { | |
2635 | zfs_error_aux(hdl, dgettext(TEXT_DOMAIN, | |
2636 | "cannot specify snapshot name for multi-snapshot " | |
2637 | "stream")); | |
2638 | return (zfs_error(hdl, EZFS_BADSTREAM, errbuf)); | |
2639 | } | |
2640 | chopprefix = drrb->drr_toname + strlen(drrb->drr_toname); | |
34dc7c2f | 2641 | } |
428870ff BB |
2642 | |
2643 | ASSERT(strstr(drrb->drr_toname, sendfs) == drrb->drr_toname); | |
2644 | ASSERT(chopprefix > drrb->drr_toname); | |
2645 | ASSERT(chopprefix <= drrb->drr_toname + strlen(drrb->drr_toname)); | |
2646 | ASSERT(chopprefix[0] == '/' || chopprefix[0] == '@' || | |
2647 | chopprefix[0] == '\0'); | |
34dc7c2f BB |
2648 | |
2649 | /* | |
2650 | * Determine name of destination snapshot, store in zc_value. | |
2651 | */ | |
428870ff | 2652 | (void) strcpy(zc.zc_top_ds, tosnap); |
34dc7c2f | 2653 | (void) strcpy(zc.zc_value, tosnap); |
2a442d16 | 2654 | (void) strlcat(zc.zc_value, chopprefix, sizeof (zc.zc_value)); |
428870ff | 2655 | free(cp); |
34dc7c2f BB |
2656 | if (!zfs_name_valid(zc.zc_value, ZFS_TYPE_SNAPSHOT)) { |
2657 | zcmd_free_nvlists(&zc); | |
2658 | return (zfs_error(hdl, EZFS_INVALIDNAME, errbuf)); | |
2659 | } | |
2660 | ||
2661 | /* | |
2662 | * Determine the name of the origin snapshot, store in zc_string. | |
2663 | */ | |
2664 | if (drrb->drr_flags & DRR_FLAG_CLONE) { | |
330d06f9 | 2665 | if (guid_to_name(hdl, zc.zc_value, |
34dc7c2f BB |
2666 | drrb->drr_fromguid, zc.zc_string) != 0) { |
2667 | zcmd_free_nvlists(&zc); | |
2668 | zfs_error_aux(hdl, dgettext(TEXT_DOMAIN, | |
2669 | "local origin for clone %s does not exist"), | |
2670 | zc.zc_value); | |
2671 | return (zfs_error(hdl, EZFS_NOENT, errbuf)); | |
2672 | } | |
330d06f9 | 2673 | if (flags->verbose) |
34dc7c2f BB |
2674 | (void) printf("found clone origin %s\n", zc.zc_string); |
2675 | } | |
2676 | ||
b8864a23 | 2677 | stream_wantsnewfs = (drrb->drr_fromguid == 0 || |
34dc7c2f BB |
2678 | (drrb->drr_flags & DRR_FLAG_CLONE)); |
2679 | ||
2680 | if (stream_wantsnewfs) { | |
2681 | /* | |
2682 | * if the parent fs does not exist, look for it based on | |
2683 | * the parent snap GUID | |
2684 | */ | |
2685 | (void) snprintf(errbuf, sizeof (errbuf), dgettext(TEXT_DOMAIN, | |
2686 | "cannot receive new filesystem stream")); | |
2687 | ||
2688 | (void) strcpy(zc.zc_name, zc.zc_value); | |
2689 | cp = strrchr(zc.zc_name, '/'); | |
2690 | if (cp) | |
2691 | *cp = '\0'; | |
2692 | if (cp && | |
2693 | !zfs_dataset_exists(hdl, zc.zc_name, ZFS_TYPE_DATASET)) { | |
2694 | char suffix[ZFS_MAXNAMELEN]; | |
2695 | (void) strcpy(suffix, strrchr(zc.zc_value, '/')); | |
330d06f9 | 2696 | if (guid_to_name(hdl, zc.zc_name, parent_snapguid, |
34dc7c2f BB |
2697 | zc.zc_value) == 0) { |
2698 | *strchr(zc.zc_value, '@') = '\0'; | |
2699 | (void) strcat(zc.zc_value, suffix); | |
2700 | } | |
2701 | } | |
2702 | } else { | |
2703 | /* | |
2704 | * if the fs does not exist, look for it based on the | |
2705 | * fromsnap GUID | |
2706 | */ | |
2707 | (void) snprintf(errbuf, sizeof (errbuf), dgettext(TEXT_DOMAIN, | |
2708 | "cannot receive incremental stream")); | |
2709 | ||
2710 | (void) strcpy(zc.zc_name, zc.zc_value); | |
2711 | *strchr(zc.zc_name, '@') = '\0'; | |
2712 | ||
428870ff BB |
2713 | /* |
2714 | * If the exact receive path was specified and this is the | |
2715 | * topmost path in the stream, then if the fs does not exist we | |
2716 | * should look no further. | |
2717 | */ | |
330d06f9 | 2718 | if ((flags->isprefix || (*(chopprefix = drrb->drr_toname + |
428870ff BB |
2719 | strlen(sendfs)) != '\0' && *chopprefix != '@')) && |
2720 | !zfs_dataset_exists(hdl, zc.zc_name, ZFS_TYPE_DATASET)) { | |
34dc7c2f BB |
2721 | char snap[ZFS_MAXNAMELEN]; |
2722 | (void) strcpy(snap, strchr(zc.zc_value, '@')); | |
330d06f9 | 2723 | if (guid_to_name(hdl, zc.zc_name, drrb->drr_fromguid, |
34dc7c2f BB |
2724 | zc.zc_value) == 0) { |
2725 | *strchr(zc.zc_value, '@') = '\0'; | |
2726 | (void) strcat(zc.zc_value, snap); | |
2727 | } | |
2728 | } | |
2729 | } | |
2730 | ||
2731 | (void) strcpy(zc.zc_name, zc.zc_value); | |
2732 | *strchr(zc.zc_name, '@') = '\0'; | |
2733 | ||
2734 | if (zfs_dataset_exists(hdl, zc.zc_name, ZFS_TYPE_DATASET)) { | |
2735 | zfs_handle_t *zhp; | |
428870ff | 2736 | |
34dc7c2f BB |
2737 | /* |
2738 | * Destination fs exists. Therefore this should either | |
2739 | * be an incremental, or the stream specifies a new fs | |
2740 | * (full stream or clone) and they want us to blow it | |
2741 | * away (and have therefore specified -F and removed any | |
2742 | * snapshots). | |
2743 | */ | |
34dc7c2f | 2744 | if (stream_wantsnewfs) { |
330d06f9 | 2745 | if (!flags->force) { |
34dc7c2f BB |
2746 | zcmd_free_nvlists(&zc); |
2747 | zfs_error_aux(hdl, dgettext(TEXT_DOMAIN, | |
2748 | "destination '%s' exists\n" | |
2749 | "must specify -F to overwrite it"), | |
2750 | zc.zc_name); | |
2751 | return (zfs_error(hdl, EZFS_EXISTS, errbuf)); | |
2752 | } | |
2753 | if (ioctl(hdl->libzfs_fd, ZFS_IOC_SNAPSHOT_LIST_NEXT, | |
2754 | &zc) == 0) { | |
2755 | zcmd_free_nvlists(&zc); | |
2756 | zfs_error_aux(hdl, dgettext(TEXT_DOMAIN, | |
2757 | "destination has snapshots (eg. %s)\n" | |
2758 | "must destroy them to overwrite it"), | |
2759 | zc.zc_name); | |
2760 | return (zfs_error(hdl, EZFS_EXISTS, errbuf)); | |
2761 | } | |
2762 | } | |
2763 | ||
2764 | if ((zhp = zfs_open(hdl, zc.zc_name, | |
2765 | ZFS_TYPE_FILESYSTEM | ZFS_TYPE_VOLUME)) == NULL) { | |
2766 | zcmd_free_nvlists(&zc); | |
2767 | return (-1); | |
2768 | } | |
2769 | ||
2770 | if (stream_wantsnewfs && | |
2771 | zhp->zfs_dmustats.dds_origin[0]) { | |
2772 | zcmd_free_nvlists(&zc); | |
2773 | zfs_close(zhp); | |
2774 | zfs_error_aux(hdl, dgettext(TEXT_DOMAIN, | |
2775 | "destination '%s' is a clone\n" | |
2776 | "must destroy it to overwrite it"), | |
2777 | zc.zc_name); | |
2778 | return (zfs_error(hdl, EZFS_EXISTS, errbuf)); | |
2779 | } | |
2780 | ||
330d06f9 | 2781 | if (!flags->dryrun && zhp->zfs_type == ZFS_TYPE_FILESYSTEM && |
34dc7c2f BB |
2782 | stream_wantsnewfs) { |
2783 | /* We can't do online recv in this case */ | |
b128c09f | 2784 | clp = changelist_gather(zhp, ZFS_PROP_NAME, 0, 0); |
34dc7c2f | 2785 | if (clp == NULL) { |
45d1cae3 | 2786 | zfs_close(zhp); |
34dc7c2f BB |
2787 | zcmd_free_nvlists(&zc); |
2788 | return (-1); | |
2789 | } | |
2790 | if (changelist_prefix(clp) != 0) { | |
2791 | changelist_free(clp); | |
45d1cae3 | 2792 | zfs_close(zhp); |
34dc7c2f BB |
2793 | zcmd_free_nvlists(&zc); |
2794 | return (-1); | |
2795 | } | |
2796 | } | |
330d06f9 | 2797 | if (!flags->dryrun && zhp->zfs_type == ZFS_TYPE_VOLUME && |
d603ed6c BB |
2798 | zvol_remove_link(hdl, zhp->zfs_name) != 0) { |
2799 | zfs_close(zhp); | |
2800 | zcmd_free_nvlists(&zc); | |
2801 | return (-1); | |
2802 | } | |
34dc7c2f BB |
2803 | zfs_close(zhp); |
2804 | } else { | |
2805 | /* | |
2806 | * Destination filesystem does not exist. Therefore we better | |
2807 | * be creating a new filesystem (either from a full backup, or | |
2808 | * a clone). It would therefore be invalid if the user | |
2809 | * specified only the pool name (i.e. if the destination name | |
2810 | * contained no slash character). | |
2811 | */ | |
2812 | if (!stream_wantsnewfs || | |
2813 | (cp = strrchr(zc.zc_name, '/')) == NULL) { | |
2814 | zcmd_free_nvlists(&zc); | |
2815 | zfs_error_aux(hdl, dgettext(TEXT_DOMAIN, | |
2816 | "destination '%s' does not exist"), zc.zc_name); | |
2817 | return (zfs_error(hdl, EZFS_NOENT, errbuf)); | |
2818 | } | |
2819 | ||
2820 | /* | |
2821 | * Trim off the final dataset component so we perform the | |
2822 | * recvbackup ioctl to the filesystems's parent. | |
2823 | */ | |
2824 | *cp = '\0'; | |
2825 | ||
330d06f9 | 2826 | if (flags->isprefix && !flags->istail && !flags->dryrun && |
34dc7c2f BB |
2827 | create_parents(hdl, zc.zc_value, strlen(tosnap)) != 0) { |
2828 | zcmd_free_nvlists(&zc); | |
2829 | return (zfs_error(hdl, EZFS_BADRESTORE, errbuf)); | |
2830 | } | |
2831 | ||
2832 | newfs = B_TRUE; | |
2833 | } | |
2834 | ||
2835 | zc.zc_begin_record = drr_noswap->drr_u.drr_begin; | |
2836 | zc.zc_cookie = infd; | |
330d06f9 MA |
2837 | zc.zc_guid = flags->force; |
2838 | if (flags->verbose) { | |
34dc7c2f | 2839 | (void) printf("%s %s stream of %s into %s\n", |
330d06f9 | 2840 | flags->dryrun ? "would receive" : "receiving", |
34dc7c2f BB |
2841 | drrb->drr_fromguid ? "incremental" : "full", |
2842 | drrb->drr_toname, zc.zc_value); | |
2843 | (void) fflush(stdout); | |
2844 | } | |
2845 | ||
330d06f9 | 2846 | if (flags->dryrun) { |
34dc7c2f | 2847 | zcmd_free_nvlists(&zc); |
330d06f9 | 2848 | return (recv_skip(hdl, infd, flags->byteswap)); |
34dc7c2f BB |
2849 | } |
2850 | ||
428870ff BB |
2851 | zc.zc_nvlist_dst = (uint64_t)(uintptr_t)prop_errbuf; |
2852 | zc.zc_nvlist_dst_size = sizeof (prop_errbuf); | |
572e2857 BB |
2853 | zc.zc_cleanup_fd = cleanup_fd; |
2854 | zc.zc_action_handle = *action_handlep; | |
428870ff | 2855 | |
34dc7c2f BB |
2856 | err = ioctl_err = zfs_ioctl(hdl, ZFS_IOC_RECV, &zc); |
2857 | ioctl_errno = errno; | |
428870ff BB |
2858 | prop_errflags = (zprop_errflags_t)zc.zc_obj; |
2859 | ||
2860 | if (err == 0) { | |
2861 | nvlist_t *prop_errors; | |
2862 | VERIFY(0 == nvlist_unpack((void *)(uintptr_t)zc.zc_nvlist_dst, | |
2863 | zc.zc_nvlist_dst_size, &prop_errors, 0)); | |
2864 | ||
2865 | nvpair_t *prop_err = NULL; | |
2866 | ||
2867 | while ((prop_err = nvlist_next_nvpair(prop_errors, | |
2868 | prop_err)) != NULL) { | |
2869 | char tbuf[1024]; | |
2870 | zfs_prop_t prop; | |
2871 | int intval; | |
2872 | ||
2873 | prop = zfs_name_to_prop(nvpair_name(prop_err)); | |
2874 | (void) nvpair_value_int32(prop_err, &intval); | |
2875 | if (strcmp(nvpair_name(prop_err), | |
2876 | ZPROP_N_MORE_ERRORS) == 0) { | |
2877 | trunc_prop_errs(intval); | |
2878 | break; | |
2879 | } else { | |
2880 | (void) snprintf(tbuf, sizeof (tbuf), | |
2881 | dgettext(TEXT_DOMAIN, | |
2882 | "cannot receive %s property on %s"), | |
2883 | nvpair_name(prop_err), zc.zc_name); | |
2884 | zfs_setprop_error(hdl, prop, intval, tbuf); | |
2885 | } | |
2886 | } | |
2887 | nvlist_free(prop_errors); | |
2888 | } | |
2889 | ||
2890 | zc.zc_nvlist_dst = 0; | |
2891 | zc.zc_nvlist_dst_size = 0; | |
b128c09f BB |
2892 | zcmd_free_nvlists(&zc); |
2893 | ||
2894 | if (err == 0 && snapprops_nvlist) { | |
2598c001 | 2895 | zfs_cmd_t zc2 = { "\0", "\0", "\0", "\0", 0 }; |
b128c09f BB |
2896 | |
2897 | (void) strcpy(zc2.zc_name, zc.zc_value); | |
428870ff | 2898 | zc2.zc_cookie = B_TRUE; /* received */ |
b128c09f BB |
2899 | if (zcmd_write_src_nvlist(hdl, &zc2, snapprops_nvlist) == 0) { |
2900 | (void) zfs_ioctl(hdl, ZFS_IOC_SET_PROP, &zc2); | |
2901 | zcmd_free_nvlists(&zc2); | |
2902 | } | |
2903 | } | |
2904 | ||
428870ff | 2905 | if (err && (ioctl_errno == ENOENT || ioctl_errno == EEXIST)) { |
34dc7c2f BB |
2906 | /* |
2907 | * It may be that this snapshot already exists, | |
2908 | * in which case we want to consume & ignore it | |
2909 | * rather than failing. | |
2910 | */ | |
2911 | avl_tree_t *local_avl; | |
2912 | nvlist_t *local_nv, *fs; | |
428870ff | 2913 | cp = strchr(zc.zc_value, '@'); |
34dc7c2f BB |
2914 | |
2915 | /* | |
2916 | * XXX Do this faster by just iterating over snaps in | |
2917 | * this fs. Also if zc_value does not exist, we will | |
2918 | * get a strange "does not exist" error message. | |
2919 | */ | |
2920 | *cp = '\0'; | |
428870ff | 2921 | if (gather_nvlist(hdl, zc.zc_value, NULL, NULL, B_FALSE, |
34dc7c2f BB |
2922 | &local_nv, &local_avl) == 0) { |
2923 | *cp = '@'; | |
2924 | fs = fsavl_find(local_avl, drrb->drr_toguid, NULL); | |
2925 | fsavl_destroy(local_avl); | |
2926 | nvlist_free(local_nv); | |
2927 | ||
2928 | if (fs != NULL) { | |
330d06f9 | 2929 | if (flags->verbose) { |
34dc7c2f BB |
2930 | (void) printf("snap %s already exists; " |
2931 | "ignoring\n", zc.zc_value); | |
2932 | } | |
428870ff | 2933 | err = ioctl_err = recv_skip(hdl, infd, |
330d06f9 | 2934 | flags->byteswap); |
34dc7c2f BB |
2935 | } |
2936 | } | |
2937 | *cp = '@'; | |
2938 | } | |
2939 | ||
34dc7c2f BB |
2940 | if (ioctl_err != 0) { |
2941 | switch (ioctl_errno) { | |
2942 | case ENODEV: | |
2943 | cp = strchr(zc.zc_value, '@'); | |
2944 | *cp = '\0'; | |
2945 | zfs_error_aux(hdl, dgettext(TEXT_DOMAIN, | |
2946 | "most recent snapshot of %s does not\n" | |
2947 | "match incremental source"), zc.zc_value); | |
2948 | (void) zfs_error(hdl, EZFS_BADRESTORE, errbuf); | |
2949 | *cp = '@'; | |
2950 | break; | |
2951 | case ETXTBSY: | |
2952 | zfs_error_aux(hdl, dgettext(TEXT_DOMAIN, | |
2953 | "destination %s has been modified\n" | |
2954 | "since most recent snapshot"), zc.zc_name); | |
2955 | (void) zfs_error(hdl, EZFS_BADRESTORE, errbuf); | |
2956 | break; | |
2957 | case EEXIST: | |
2958 | cp = strchr(zc.zc_value, '@'); | |
2959 | if (newfs) { | |
2960 | /* it's the containing fs that exists */ | |
2961 | *cp = '\0'; | |
2962 | } | |
2963 | zfs_error_aux(hdl, dgettext(TEXT_DOMAIN, | |
2964 | "destination already exists")); | |
2965 | (void) zfs_error_fmt(hdl, EZFS_EXISTS, | |
2966 | dgettext(TEXT_DOMAIN, "cannot restore to %s"), | |
2967 | zc.zc_value); | |
2968 | *cp = '@'; | |
2969 | break; | |
2970 | case EINVAL: | |
2971 | (void) zfs_error(hdl, EZFS_BADSTREAM, errbuf); | |
2972 | break; | |
2973 | case ECKSUM: | |
2974 | zfs_error_aux(hdl, dgettext(TEXT_DOMAIN, | |
2975 | "invalid stream (checksum mismatch)")); | |
2976 | (void) zfs_error(hdl, EZFS_BADSTREAM, errbuf); | |
2977 | break; | |
428870ff BB |
2978 | case ENOTSUP: |
2979 | zfs_error_aux(hdl, dgettext(TEXT_DOMAIN, | |
2980 | "pool must be upgraded to receive this stream.")); | |
2981 | (void) zfs_error(hdl, EZFS_BADVERSION, errbuf); | |
2982 | break; | |
2983 | case EDQUOT: | |
2984 | zfs_error_aux(hdl, dgettext(TEXT_DOMAIN, | |
2985 | "destination %s space quota exceeded"), zc.zc_name); | |
330d06f9 | 2986 | (void) zfs_error(hdl, EZFS_NOSPC, errbuf); |
428870ff | 2987 | break; |
34dc7c2f BB |
2988 | default: |
2989 | (void) zfs_standard_error(hdl, ioctl_errno, errbuf); | |
2990 | } | |
2991 | } | |
2992 | ||
2993 | /* | |
428870ff BB |
2994 | * Mount the target filesystem (if created). Also mount any |
2995 | * children of the target filesystem if we did a replication | |
2996 | * receive (indicated by stream_avl being non-NULL). | |
34dc7c2f BB |
2997 | */ |
2998 | cp = strchr(zc.zc_value, '@'); | |
2999 | if (cp && (ioctl_err == 0 || !newfs)) { | |
3000 | zfs_handle_t *h; | |
3001 | ||
3002 | *cp = '\0'; | |
3003 | h = zfs_open(hdl, zc.zc_value, | |
3004 | ZFS_TYPE_FILESYSTEM | ZFS_TYPE_VOLUME); | |
34dc7c2f BB |
3005 | if (h != NULL) { |
3006 | if (h->zfs_type == ZFS_TYPE_VOLUME) { | |
b128c09f | 3007 | *cp = '@'; |
d603ed6c BB |
3008 | err = zvol_create_link(hdl, h->zfs_name); |
3009 | if (err == 0 && ioctl_err == 0) | |
3010 | err = zvol_create_link(hdl, | |
3011 | zc.zc_value); | |
45d1cae3 | 3012 | } else if (newfs || stream_avl) { |
b128c09f BB |
3013 | /* |
3014 | * Track the first/top of hierarchy fs, | |
3015 | * for mounting and sharing later. | |
3016 | */ | |
3017 | if (top_zfs && *top_zfs == NULL) | |
3018 | *top_zfs = zfs_strdup(hdl, zc.zc_value); | |
34dc7c2f BB |
3019 | } |
3020 | zfs_close(h); | |
3021 | } | |
b128c09f | 3022 | *cp = '@'; |
34dc7c2f BB |
3023 | } |
3024 | ||
3025 | if (clp) { | |
3026 | err |= changelist_postfix(clp); | |
3027 | changelist_free(clp); | |
3028 | } | |
3029 | ||
428870ff BB |
3030 | if (prop_errflags & ZPROP_ERR_NOCLEAR) { |
3031 | (void) fprintf(stderr, dgettext(TEXT_DOMAIN, "Warning: " | |
3032 | "failed to clear unreceived properties on %s"), | |
3033 | zc.zc_name); | |
3034 | (void) fprintf(stderr, "\n"); | |
3035 | } | |
3036 | if (prop_errflags & ZPROP_ERR_NORESTORE) { | |
3037 | (void) fprintf(stderr, dgettext(TEXT_DOMAIN, "Warning: " | |
3038 | "failed to restore original properties on %s"), | |
3039 | zc.zc_name); | |
3040 | (void) fprintf(stderr, "\n"); | |
3041 | } | |
3042 | ||
34dc7c2f BB |
3043 | if (err || ioctl_err) |
3044 | return (-1); | |
3045 | ||
572e2857 BB |
3046 | *action_handlep = zc.zc_action_handle; |
3047 | ||
330d06f9 | 3048 | if (flags->verbose) { |
34dc7c2f BB |
3049 | char buf1[64]; |
3050 | char buf2[64]; | |
3051 | uint64_t bytes = zc.zc_cookie; | |
3052 | time_t delta = time(NULL) - begin_time; | |
3053 | if (delta == 0) | |
3054 | delta = 1; | |
3055 | zfs_nicenum(bytes, buf1, sizeof (buf1)); | |
3056 | zfs_nicenum(bytes/delta, buf2, sizeof (buf1)); | |
3057 | ||
3058 | (void) printf("received %sB stream in %lu seconds (%sB/sec)\n", | |
3059 | buf1, delta, buf2); | |
3060 | } | |
3061 | ||
3062 | return (0); | |
3063 | } | |
3064 | ||
b128c09f | 3065 | static int |
330d06f9 | 3066 | zfs_receive_impl(libzfs_handle_t *hdl, const char *tosnap, recvflags_t *flags, |
428870ff | 3067 | int infd, const char *sendfs, nvlist_t *stream_nv, avl_tree_t *stream_avl, |
572e2857 | 3068 | char **top_zfs, int cleanup_fd, uint64_t *action_handlep) |
34dc7c2f BB |
3069 | { |
3070 | int err; | |
3071 | dmu_replay_record_t drr, drr_noswap; | |
3072 | struct drr_begin *drrb = &drr.drr_u.drr_begin; | |
3073 | char errbuf[1024]; | |
2598c001 | 3074 | zio_cksum_t zcksum = { { 0 } }; |
428870ff BB |
3075 | uint64_t featureflags; |
3076 | int hdrtype; | |
34dc7c2f BB |
3077 | |
3078 | (void) snprintf(errbuf, sizeof (errbuf), dgettext(TEXT_DOMAIN, | |
3079 | "cannot receive")); | |
3080 | ||
330d06f9 | 3081 | if (flags->isprefix && |
34dc7c2f BB |
3082 | !zfs_dataset_exists(hdl, tosnap, ZFS_TYPE_DATASET)) { |
3083 | zfs_error_aux(hdl, dgettext(TEXT_DOMAIN, "specified fs " | |
3084 | "(%s) does not exist"), tosnap); | |
3085 | return (zfs_error(hdl, EZFS_NOENT, errbuf)); | |
3086 | } | |
3087 | ||
3088 | /* read in the BEGIN record */ | |
3089 | if (0 != (err = recv_read(hdl, infd, &drr, sizeof (drr), B_FALSE, | |
3090 | &zcksum))) | |
3091 | return (err); | |
3092 | ||
3093 | if (drr.drr_type == DRR_END || drr.drr_type == BSWAP_32(DRR_END)) { | |
3094 | /* It's the double end record at the end of a package */ | |
3095 | return (ENODATA); | |
3096 | } | |
3097 | ||
3098 | /* the kernel needs the non-byteswapped begin record */ | |
3099 | drr_noswap = drr; | |
3100 | ||
330d06f9 | 3101 | flags->byteswap = B_FALSE; |
34dc7c2f BB |
3102 | if (drrb->drr_magic == BSWAP_64(DMU_BACKUP_MAGIC)) { |
3103 | /* | |
3104 | * We computed the checksum in the wrong byteorder in | |
3105 | * recv_read() above; do it again correctly. | |
3106 | */ | |
3107 | bzero(&zcksum, sizeof (zio_cksum_t)); | |
3108 | fletcher_4_incremental_byteswap(&drr, sizeof (drr), &zcksum); | |
330d06f9 | 3109 | flags->byteswap = B_TRUE; |
34dc7c2f BB |
3110 | |
3111 | drr.drr_type = BSWAP_32(drr.drr_type); | |
3112 | drr.drr_payloadlen = BSWAP_32(drr.drr_payloadlen); | |
3113 | drrb->drr_magic = BSWAP_64(drrb->drr_magic); | |
428870ff | 3114 | drrb->drr_versioninfo = BSWAP_64(drrb->drr_versioninfo); |
34dc7c2f BB |
3115 | drrb->drr_creation_time = BSWAP_64(drrb->drr_creation_time); |
3116 | drrb->drr_type = BSWAP_32(drrb->drr_type); | |
3117 | drrb->drr_flags = BSWAP_32(drrb->drr_flags); | |
3118 | drrb->drr_toguid = BSWAP_64(drrb->drr_toguid); | |
3119 | drrb->drr_fromguid = BSWAP_64(drrb->drr_fromguid); | |
3120 | } | |
3121 | ||
3122 | if (drrb->drr_magic != DMU_BACKUP_MAGIC || drr.drr_type != DRR_BEGIN) { | |
3123 | zfs_error_aux(hdl, dgettext(TEXT_DOMAIN, "invalid " | |
3124 | "stream (bad magic number)")); | |
3125 | return (zfs_error(hdl, EZFS_BADSTREAM, errbuf)); | |
3126 | } | |
3127 | ||
428870ff BB |
3128 | featureflags = DMU_GET_FEATUREFLAGS(drrb->drr_versioninfo); |
3129 | hdrtype = DMU_GET_STREAM_HDRTYPE(drrb->drr_versioninfo); | |
3130 | ||
3131 | if (!DMU_STREAM_SUPPORTED(featureflags) || | |
3132 | (hdrtype != DMU_SUBSTREAM && hdrtype != DMU_COMPOUNDSTREAM)) { | |
3133 | zfs_error_aux(hdl, dgettext(TEXT_DOMAIN, | |
3134 | "stream has unsupported feature, feature flags = %lx"), | |
3135 | featureflags); | |
3136 | return (zfs_error(hdl, EZFS_BADSTREAM, errbuf)); | |
3137 | } | |
3138 | ||
34dc7c2f BB |
3139 | if (strchr(drrb->drr_toname, '@') == NULL) { |
3140 | zfs_error_aux(hdl, dgettext(TEXT_DOMAIN, "invalid " | |
3141 | "stream (bad snapshot name)")); | |
3142 | return (zfs_error(hdl, EZFS_BADSTREAM, errbuf)); | |
3143 | } | |
3144 | ||
428870ff BB |
3145 | if (DMU_GET_STREAM_HDRTYPE(drrb->drr_versioninfo) == DMU_SUBSTREAM) { |
3146 | char nonpackage_sendfs[ZFS_MAXNAMELEN]; | |
3147 | if (sendfs == NULL) { | |
3148 | /* | |
3149 | * We were not called from zfs_receive_package(). Get | |
3150 | * the fs specified by 'zfs send'. | |
3151 | */ | |
3152 | char *cp; | |
3153 | (void) strlcpy(nonpackage_sendfs, | |
3154 | drr.drr_u.drr_begin.drr_toname, ZFS_MAXNAMELEN); | |
3155 | if ((cp = strchr(nonpackage_sendfs, '@')) != NULL) | |
3156 | *cp = '\0'; | |
3157 | sendfs = nonpackage_sendfs; | |
3158 | } | |
34dc7c2f | 3159 | return (zfs_receive_one(hdl, infd, tosnap, flags, |
428870ff | 3160 | &drr, &drr_noswap, sendfs, stream_nv, stream_avl, |
572e2857 | 3161 | top_zfs, cleanup_fd, action_handlep)); |
428870ff BB |
3162 | } else { |
3163 | assert(DMU_GET_STREAM_HDRTYPE(drrb->drr_versioninfo) == | |
3164 | DMU_COMPOUNDSTREAM); | |
34dc7c2f | 3165 | return (zfs_receive_package(hdl, infd, tosnap, flags, |
572e2857 | 3166 | &drr, &zcksum, top_zfs, cleanup_fd, action_handlep)); |
34dc7c2f BB |
3167 | } |
3168 | } | |
b128c09f BB |
3169 | |
3170 | /* | |
3171 | * Restores a backup of tosnap from the file descriptor specified by infd. | |
3172 | * Return 0 on total success, -2 if some things couldn't be | |
3173 | * destroyed/renamed/promoted, -1 if some things couldn't be received. | |
3174 | * (-1 will override -2). | |
3175 | */ | |
3176 | int | |
330d06f9 | 3177 | zfs_receive(libzfs_handle_t *hdl, const char *tosnap, recvflags_t *flags, |
b128c09f BB |
3178 | int infd, avl_tree_t *stream_avl) |
3179 | { | |
3180 | char *top_zfs = NULL; | |
3181 | int err; | |
572e2857 BB |
3182 | int cleanup_fd; |
3183 | uint64_t action_handle = 0; | |
3184 | ||
325f0235 | 3185 | cleanup_fd = open(ZFS_DEV, O_RDWR); |
572e2857 | 3186 | VERIFY(cleanup_fd >= 0); |
b128c09f | 3187 | |
428870ff | 3188 | err = zfs_receive_impl(hdl, tosnap, flags, infd, NULL, NULL, |
572e2857 BB |
3189 | stream_avl, &top_zfs, cleanup_fd, &action_handle); |
3190 | ||
3191 | VERIFY(0 == close(cleanup_fd)); | |
b128c09f | 3192 | |
330d06f9 | 3193 | if (err == 0 && !flags->nomount && top_zfs) { |
b128c09f BB |
3194 | zfs_handle_t *zhp; |
3195 | prop_changelist_t *clp; | |
3196 | ||
3197 | zhp = zfs_open(hdl, top_zfs, ZFS_TYPE_FILESYSTEM); | |
3198 | if (zhp != NULL) { | |
3199 | clp = changelist_gather(zhp, ZFS_PROP_MOUNTPOINT, | |
3200 | CL_GATHER_MOUNT_ALWAYS, 0); | |
3201 | zfs_close(zhp); | |
3202 | if (clp != NULL) { | |
3203 | /* mount and share received datasets */ | |
3204 | err = changelist_postfix(clp); | |
3205 | changelist_free(clp); | |
3206 | } | |
3207 | } | |
3208 | if (zhp == NULL || clp == NULL || err) | |
3209 | err = -1; | |
3210 | } | |
3211 | if (top_zfs) | |
3212 | free(top_zfs); | |
3213 | ||
3214 | return (err); | |
3215 | } |