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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. |
196bee4c | 24 | * Copyright (c) 2011, 2020 by Delphix. All rights reserved. |
37abac6d | 25 | * Copyright (c) 2012, Joyent, Inc. All rights reserved. |
95fd54a1 | 26 | * Copyright (c) 2012 Pawel Jakub Dawidek <pawel@dawidek.net>. |
0cee2406 | 27 | * All rights reserved |
95fd54a1 | 28 | * Copyright (c) 2013 Steven Hartland. All rights reserved. |
671c9354 | 29 | * Copyright 2015, OmniTI Computer Consulting, Inc. All rights reserved. |
23d70cde | 30 | * Copyright 2016 Igor Kozhukhov <ikozhukhov@gmail.com> |
d8d418ff | 31 | * Copyright (c) 2018, loli10K <ezomori.nozomu@gmail.com>. All rights reserved. |
4c0883fb | 32 | * Copyright (c) 2019 Datto Inc. |
34dc7c2f BB |
33 | */ |
34 | ||
34dc7c2f BB |
35 | #include <assert.h> |
36 | #include <ctype.h> | |
37 | #include <errno.h> | |
34dc7c2f BB |
38 | #include <libintl.h> |
39 | #include <stdio.h> | |
40 | #include <stdlib.h> | |
41 | #include <strings.h> | |
42 | #include <unistd.h> | |
43 | #include <stddef.h> | |
44 | #include <fcntl.h> | |
45 | #include <sys/mount.h> | |
9b020fd9 BB |
46 | #include <sys/mntent.h> |
47 | #include <sys/mnttab.h> | |
48 | #include <sys/avl.h> | |
49 | #include <sys/debug.h> | |
5c3f61eb | 50 | #include <sys/stat.h> |
9b020fd9 | 51 | #include <stddef.h> |
428870ff BB |
52 | #include <pthread.h> |
53 | #include <umem.h> | |
37abac6d | 54 | #include <time.h> |
34dc7c2f BB |
55 | |
56 | #include <libzfs.h> | |
9b67f605 | 57 | #include <libzfs_core.h> |
e89f1295 | 58 | #include <libzutil.h> |
34dc7c2f BB |
59 | |
60 | #include "zfs_namecheck.h" | |
61 | #include "zfs_prop.h" | |
428870ff | 62 | #include "zfs_fletcher.h" |
34dc7c2f | 63 | #include "libzfs_impl.h" |
c618f87c | 64 | #include <cityhash.h> |
47dfff3b | 65 | #include <zlib.h> |
428870ff | 66 | #include <sys/zio_checksum.h> |
b5256303 | 67 | #include <sys/dsl_crypt.h> |
428870ff | 68 | #include <sys/ddt.h> |
1b9d8c34 | 69 | #include <sys/socket.h> |
3c67d83a | 70 | #include <sys/sha2.h> |
34dc7c2f | 71 | |
fcff0f35 | 72 | static int zfs_receive_impl(libzfs_handle_t *, const char *, const char *, |
196bee4c MA |
73 | recvflags_t *, int, const char *, nvlist_t *, avl_tree_t *, char **, |
74 | const char *, nvlist_t *); | |
30af21b0 PD |
75 | static int guid_to_name_redact_snaps(libzfs_handle_t *hdl, const char *parent, |
76 | uint64_t guid, boolean_t bookmark_ok, uint64_t *redact_snap_guids, | |
77 | uint64_t num_redact_snaps, char *name); | |
47dfff3b MA |
78 | static int guid_to_name(libzfs_handle_t *, const char *, |
79 | uint64_t, boolean_t, char *); | |
428870ff | 80 | |
37abac6d BP |
81 | typedef struct progress_arg { |
82 | zfs_handle_t *pa_zhp; | |
83 | int pa_fd; | |
84 | boolean_t pa_parsable; | |
30af21b0 PD |
85 | boolean_t pa_estimate; |
86 | int pa_verbosity; | |
37abac6d BP |
87 | } progress_arg_t; |
88 | ||
428870ff | 89 | static int |
37f8a883 MA |
90 | dump_record(dmu_replay_record_t *drr, void *payload, int payload_len, |
91 | zio_cksum_t *zc, int outfd) | |
428870ff | 92 | { |
37f8a883 MA |
93 | ASSERT3U(offsetof(dmu_replay_record_t, drr_u.drr_checksum.drr_checksum), |
94 | ==, sizeof (dmu_replay_record_t) - sizeof (zio_cksum_t)); | |
95 | fletcher_4_incremental_native(drr, | |
96 | offsetof(dmu_replay_record_t, drr_u.drr_checksum.drr_checksum), zc); | |
97 | if (drr->drr_type != DRR_BEGIN) { | |
98 | ASSERT(ZIO_CHECKSUM_IS_ZERO(&drr->drr_u. | |
99 | drr_checksum.drr_checksum)); | |
100 | drr->drr_u.drr_checksum.drr_checksum = *zc; | |
101 | } | |
102 | fletcher_4_incremental_native(&drr->drr_u.drr_checksum.drr_checksum, | |
103 | sizeof (zio_cksum_t), zc); | |
104 | if (write(outfd, drr, sizeof (*drr)) == -1) | |
105 | return (errno); | |
106 | if (payload_len != 0) { | |
107 | fletcher_4_incremental_native(payload, payload_len, zc); | |
108 | if (write(outfd, payload, payload_len) == -1) | |
109 | return (errno); | |
110 | } | |
111 | return (0); | |
428870ff BB |
112 | } |
113 | ||
34dc7c2f BB |
114 | /* |
115 | * Routines for dealing with the AVL tree of fs-nvlists | |
116 | */ | |
117 | typedef struct fsavl_node { | |
118 | avl_node_t fn_node; | |
119 | nvlist_t *fn_nvfs; | |
120 | char *fn_snapname; | |
121 | uint64_t fn_guid; | |
122 | } fsavl_node_t; | |
123 | ||
124 | static int | |
125 | fsavl_compare(const void *arg1, const void *arg2) | |
126 | { | |
ee36c709 GN |
127 | const fsavl_node_t *fn1 = (const fsavl_node_t *)arg1; |
128 | const fsavl_node_t *fn2 = (const fsavl_node_t *)arg2; | |
129 | ||
ca577779 | 130 | return (TREE_CMP(fn1->fn_guid, fn2->fn_guid)); |
34dc7c2f BB |
131 | } |
132 | ||
133 | /* | |
134 | * Given the GUID of a snapshot, find its containing filesystem and | |
135 | * (optionally) name. | |
136 | */ | |
137 | static nvlist_t * | |
138 | fsavl_find(avl_tree_t *avl, uint64_t snapguid, char **snapname) | |
139 | { | |
140 | fsavl_node_t fn_find; | |
141 | fsavl_node_t *fn; | |
142 | ||
143 | fn_find.fn_guid = snapguid; | |
144 | ||
145 | fn = avl_find(avl, &fn_find, NULL); | |
146 | if (fn) { | |
147 | if (snapname) | |
148 | *snapname = fn->fn_snapname; | |
149 | return (fn->fn_nvfs); | |
150 | } | |
151 | return (NULL); | |
152 | } | |
153 | ||
154 | static void | |
155 | fsavl_destroy(avl_tree_t *avl) | |
156 | { | |
157 | fsavl_node_t *fn; | |
158 | void *cookie; | |
159 | ||
160 | if (avl == NULL) | |
161 | return; | |
162 | ||
163 | cookie = NULL; | |
164 | while ((fn = avl_destroy_nodes(avl, &cookie)) != NULL) | |
165 | free(fn); | |
166 | avl_destroy(avl); | |
167 | free(avl); | |
168 | } | |
169 | ||
45d1cae3 BB |
170 | /* |
171 | * Given an nvlist, produce an avl tree of snapshots, ordered by guid | |
172 | */ | |
34dc7c2f BB |
173 | static avl_tree_t * |
174 | fsavl_create(nvlist_t *fss) | |
175 | { | |
176 | avl_tree_t *fsavl; | |
177 | nvpair_t *fselem = NULL; | |
178 | ||
179 | if ((fsavl = malloc(sizeof (avl_tree_t))) == NULL) | |
180 | return (NULL); | |
181 | ||
182 | avl_create(fsavl, fsavl_compare, sizeof (fsavl_node_t), | |
183 | offsetof(fsavl_node_t, fn_node)); | |
184 | ||
185 | while ((fselem = nvlist_next_nvpair(fss, fselem)) != NULL) { | |
186 | nvlist_t *nvfs, *snaps; | |
187 | nvpair_t *snapelem = NULL; | |
188 | ||
189 | VERIFY(0 == nvpair_value_nvlist(fselem, &nvfs)); | |
190 | VERIFY(0 == nvlist_lookup_nvlist(nvfs, "snaps", &snaps)); | |
191 | ||
192 | while ((snapelem = | |
193 | nvlist_next_nvpair(snaps, snapelem)) != NULL) { | |
194 | fsavl_node_t *fn; | |
195 | uint64_t guid; | |
196 | ||
197 | VERIFY(0 == nvpair_value_uint64(snapelem, &guid)); | |
198 | if ((fn = malloc(sizeof (fsavl_node_t))) == NULL) { | |
199 | fsavl_destroy(fsavl); | |
200 | return (NULL); | |
201 | } | |
202 | fn->fn_nvfs = nvfs; | |
203 | fn->fn_snapname = nvpair_name(snapelem); | |
204 | fn->fn_guid = guid; | |
205 | ||
206 | /* | |
207 | * Note: if there are multiple snaps with the | |
208 | * same GUID, we ignore all but one. | |
209 | */ | |
210 | if (avl_find(fsavl, fn, NULL) == NULL) | |
211 | avl_add(fsavl, fn); | |
212 | else | |
213 | free(fn); | |
214 | } | |
215 | } | |
216 | ||
217 | return (fsavl); | |
218 | } | |
219 | ||
220 | /* | |
221 | * Routines for dealing with the giant nvlist of fs-nvlists, etc. | |
222 | */ | |
223 | typedef struct send_data { | |
66356240 K |
224 | /* |
225 | * assigned inside every recursive call, | |
226 | * restored from *_save on return: | |
227 | * | |
228 | * guid of fromsnap snapshot in parent dataset | |
229 | * txg of fromsnap snapshot in current dataset | |
230 | * txg of tosnap snapshot in current dataset | |
231 | */ | |
232 | ||
34dc7c2f | 233 | uint64_t parent_fromsnap_guid; |
66356240 K |
234 | uint64_t fromsnap_txg; |
235 | uint64_t tosnap_txg; | |
236 | ||
237 | /* the nvlists get accumulated during depth-first traversal */ | |
34dc7c2f BB |
238 | nvlist_t *parent_snaps; |
239 | nvlist_t *fss; | |
b128c09f | 240 | nvlist_t *snapprops; |
9c5e88b1 | 241 | nvlist_t *snapholds; /* user holds */ |
66356240 K |
242 | |
243 | /* send-receive configuration, does not change during traversal */ | |
244 | const char *fsname; | |
34dc7c2f BB |
245 | const char *fromsnap; |
246 | const char *tosnap; | |
428870ff | 247 | boolean_t recursive; |
4c0883fb | 248 | boolean_t raw; |
f94b3cbf | 249 | boolean_t doall; |
4c0883fb | 250 | boolean_t replicate; |
66356240 | 251 | boolean_t verbose; |
4c0883fb | 252 | boolean_t backup; |
05748550 AG |
253 | boolean_t seenfrom; |
254 | boolean_t seento; | |
9c5e88b1 PZ |
255 | boolean_t holds; /* were holds requested with send -h */ |
256 | boolean_t props; | |
34dc7c2f BB |
257 | |
258 | /* | |
259 | * The header nvlist is of the following format: | |
260 | * { | |
261 | * "tosnap" -> string | |
262 | * "fromsnap" -> string (if incremental) | |
263 | * "fss" -> { | |
264 | * id -> { | |
265 | * | |
266 | * "name" -> string (full name; for debugging) | |
267 | * "parentfromsnap" -> number (guid of fromsnap in parent) | |
268 | * | |
269 | * "props" -> { name -> value (only if set here) } | |
270 | * "snaps" -> { name (lastname) -> number (guid) } | |
b128c09f | 271 | * "snapprops" -> { name (lastname) -> { name -> value } } |
9c5e88b1 | 272 | * "snapholds" -> { name (lastname) -> { holdname -> crtime } } |
34dc7c2f BB |
273 | * |
274 | * "origin" -> number (guid) (if clone) | |
b5256303 | 275 | * "is_encroot" -> boolean |
34dc7c2f BB |
276 | * "sent" -> boolean (not on-disk) |
277 | * } | |
278 | * } | |
279 | * } | |
280 | * | |
281 | */ | |
282 | } send_data_t; | |
283 | ||
faa97c16 | 284 | static void |
285 | send_iterate_prop(zfs_handle_t *zhp, boolean_t received_only, nvlist_t *nv); | |
b128c09f | 286 | |
34dc7c2f BB |
287 | static int |
288 | send_iterate_snap(zfs_handle_t *zhp, void *arg) | |
289 | { | |
290 | send_data_t *sd = arg; | |
291 | uint64_t guid = zhp->zfs_dmustats.dds_guid; | |
66356240 | 292 | uint64_t txg = zhp->zfs_dmustats.dds_creation_txg; |
34dc7c2f | 293 | char *snapname; |
b128c09f | 294 | nvlist_t *nv; |
e890dd85 | 295 | boolean_t isfromsnap, istosnap, istosnapwithnofrom; |
34dc7c2f BB |
296 | |
297 | snapname = strrchr(zhp->zfs_name, '@')+1; | |
05748550 AG |
298 | isfromsnap = (sd->fromsnap != NULL && |
299 | strcmp(sd->fromsnap, snapname) == 0); | |
300 | istosnap = (sd->tosnap != NULL && (strcmp(sd->tosnap, snapname) == 0)); | |
e890dd85 | 301 | istosnapwithnofrom = (istosnap && sd->fromsnap == NULL); |
34dc7c2f | 302 | |
66356240 K |
303 | if (sd->tosnap_txg != 0 && txg > sd->tosnap_txg) { |
304 | if (sd->verbose) { | |
305 | (void) fprintf(stderr, dgettext(TEXT_DOMAIN, | |
306 | "skipping snapshot %s because it was created " | |
307 | "after the destination snapshot (%s)\n"), | |
308 | zhp->zfs_name, sd->tosnap); | |
309 | } | |
310 | zfs_close(zhp); | |
311 | return (0); | |
312 | } | |
313 | ||
e890dd85 | 314 | VERIFY(0 == nvlist_add_uint64(sd->parent_snaps, snapname, guid)); |
34dc7c2f BB |
315 | /* |
316 | * NB: if there is no fromsnap here (it's a newly created fs in | |
317 | * an incremental replication), we will substitute the tosnap. | |
318 | */ | |
05748550 | 319 | if (isfromsnap || (sd->parent_fromsnap_guid == 0 && istosnap)) { |
34dc7c2f BB |
320 | sd->parent_fromsnap_guid = guid; |
321 | } | |
322 | ||
05748550 AG |
323 | if (!sd->recursive) { |
324 | if (!sd->seenfrom && isfromsnap) { | |
325 | sd->seenfrom = B_TRUE; | |
326 | zfs_close(zhp); | |
327 | return (0); | |
328 | } | |
329 | ||
e890dd85 | 330 | if ((sd->seento || !sd->seenfrom) && !istosnapwithnofrom) { |
05748550 AG |
331 | zfs_close(zhp); |
332 | return (0); | |
333 | } | |
334 | ||
335 | if (istosnap) | |
336 | sd->seento = B_TRUE; | |
337 | } | |
338 | ||
b128c09f | 339 | VERIFY(0 == nvlist_alloc(&nv, NV_UNIQUE_NAME, 0)); |
faa97c16 | 340 | send_iterate_prop(zhp, sd->backup, nv); |
b128c09f BB |
341 | VERIFY(0 == nvlist_add_nvlist(sd->snapprops, snapname, nv)); |
342 | nvlist_free(nv); | |
9c5e88b1 PZ |
343 | if (sd->holds) { |
344 | nvlist_t *holds = fnvlist_alloc(); | |
345 | int err = lzc_get_holds(zhp->zfs_name, &holds); | |
346 | if (err == 0) { | |
347 | VERIFY(0 == nvlist_add_nvlist(sd->snapholds, | |
348 | snapname, holds)); | |
349 | } | |
350 | fnvlist_free(holds); | |
351 | } | |
b128c09f | 352 | |
34dc7c2f BB |
353 | zfs_close(zhp); |
354 | return (0); | |
355 | } | |
356 | ||
357 | static void | |
faa97c16 | 358 | send_iterate_prop(zfs_handle_t *zhp, boolean_t received_only, nvlist_t *nv) |
34dc7c2f | 359 | { |
faa97c16 | 360 | nvlist_t *props = NULL; |
34dc7c2f BB |
361 | nvpair_t *elem = NULL; |
362 | ||
faa97c16 | 363 | if (received_only) |
364 | props = zfs_get_recvd_props(zhp); | |
365 | else | |
366 | props = zhp->zfs_props; | |
367 | ||
368 | while ((elem = nvlist_next_nvpair(props, elem)) != NULL) { | |
34dc7c2f BB |
369 | char *propname = nvpair_name(elem); |
370 | zfs_prop_t prop = zfs_name_to_prop(propname); | |
371 | nvlist_t *propnv; | |
372 | ||
428870ff BB |
373 | if (!zfs_prop_user(propname)) { |
374 | /* | |
375 | * Realistically, this should never happen. However, | |
376 | * we want the ability to add DSL properties without | |
377 | * needing to make incompatible version changes. We | |
378 | * need to ignore unknown properties to allow older | |
379 | * software to still send datasets containing these | |
380 | * properties, with the unknown properties elided. | |
381 | */ | |
382 | if (prop == ZPROP_INVAL) | |
383 | continue; | |
9babb374 | 384 | |
428870ff BB |
385 | if (zfs_prop_readonly(prop)) |
386 | continue; | |
387 | } | |
34dc7c2f BB |
388 | |
389 | verify(nvpair_value_nvlist(elem, &propnv) == 0); | |
45d1cae3 BB |
390 | if (prop == ZFS_PROP_QUOTA || prop == ZFS_PROP_RESERVATION || |
391 | prop == ZFS_PROP_REFQUOTA || | |
392 | prop == ZFS_PROP_REFRESERVATION) { | |
428870ff | 393 | char *source; |
34dc7c2f BB |
394 | uint64_t value; |
395 | verify(nvlist_lookup_uint64(propnv, | |
396 | ZPROP_VALUE, &value) == 0); | |
b128c09f BB |
397 | if (zhp->zfs_type == ZFS_TYPE_SNAPSHOT) |
398 | continue; | |
428870ff BB |
399 | /* |
400 | * May have no source before SPA_VERSION_RECVD_PROPS, | |
401 | * but is still modifiable. | |
402 | */ | |
403 | if (nvlist_lookup_string(propnv, | |
404 | ZPROP_SOURCE, &source) == 0) { | |
405 | if ((strcmp(source, zhp->zfs_name) != 0) && | |
406 | (strcmp(source, | |
407 | ZPROP_SOURCE_VAL_RECVD) != 0)) | |
408 | continue; | |
409 | } | |
34dc7c2f BB |
410 | } else { |
411 | char *source; | |
412 | if (nvlist_lookup_string(propnv, | |
413 | ZPROP_SOURCE, &source) != 0) | |
414 | continue; | |
428870ff BB |
415 | if ((strcmp(source, zhp->zfs_name) != 0) && |
416 | (strcmp(source, ZPROP_SOURCE_VAL_RECVD) != 0)) | |
34dc7c2f BB |
417 | continue; |
418 | } | |
419 | ||
420 | if (zfs_prop_user(propname) || | |
421 | zfs_prop_get_type(prop) == PROP_TYPE_STRING) { | |
422 | char *value; | |
423 | verify(nvlist_lookup_string(propnv, | |
424 | ZPROP_VALUE, &value) == 0); | |
425 | VERIFY(0 == nvlist_add_string(nv, propname, value)); | |
426 | } else { | |
427 | uint64_t value; | |
428 | verify(nvlist_lookup_uint64(propnv, | |
429 | ZPROP_VALUE, &value) == 0); | |
430 | VERIFY(0 == nvlist_add_uint64(nv, propname, value)); | |
431 | } | |
432 | } | |
433 | } | |
434 | ||
66356240 K |
435 | /* |
436 | * returns snapshot creation txg | |
437 | * and returns 0 if the snapshot does not exist | |
438 | */ | |
439 | static uint64_t | |
440 | get_snap_txg(libzfs_handle_t *hdl, const char *fs, const char *snap) | |
441 | { | |
442 | char name[ZFS_MAX_DATASET_NAME_LEN]; | |
443 | uint64_t txg = 0; | |
444 | ||
445 | if (fs == NULL || fs[0] == '\0' || snap == NULL || snap[0] == '\0') | |
446 | return (txg); | |
447 | ||
448 | (void) snprintf(name, sizeof (name), "%s@%s", fs, snap); | |
449 | if (zfs_dataset_exists(hdl, name, ZFS_TYPE_SNAPSHOT)) { | |
450 | zfs_handle_t *zhp = zfs_open(hdl, name, ZFS_TYPE_SNAPSHOT); | |
451 | if (zhp != NULL) { | |
452 | txg = zfs_prop_get_int(zhp, ZFS_PROP_CREATETXG); | |
453 | zfs_close(zhp); | |
454 | } | |
455 | } | |
456 | ||
457 | return (txg); | |
458 | } | |
459 | ||
45d1cae3 BB |
460 | /* |
461 | * recursively generate nvlists describing datasets. See comment | |
462 | * for the data structure send_data_t above for description of contents | |
463 | * of the nvlist. | |
464 | */ | |
34dc7c2f BB |
465 | static int |
466 | send_iterate_fs(zfs_handle_t *zhp, void *arg) | |
467 | { | |
468 | send_data_t *sd = arg; | |
b5256303 | 469 | nvlist_t *nvfs = NULL, *nv = NULL; |
428870ff | 470 | int rv = 0; |
4c0883fb | 471 | uint64_t min_txg = 0, max_txg = 0; |
34dc7c2f | 472 | uint64_t parent_fromsnap_guid_save = sd->parent_fromsnap_guid; |
66356240 K |
473 | uint64_t fromsnap_txg_save = sd->fromsnap_txg; |
474 | uint64_t tosnap_txg_save = sd->tosnap_txg; | |
475 | uint64_t txg = zhp->zfs_dmustats.dds_creation_txg; | |
34dc7c2f | 476 | uint64_t guid = zhp->zfs_dmustats.dds_guid; |
66356240 | 477 | uint64_t fromsnap_txg, tosnap_txg; |
34dc7c2f BB |
478 | char guidstring[64]; |
479 | ||
66356240 K |
480 | fromsnap_txg = get_snap_txg(zhp->zfs_hdl, zhp->zfs_name, sd->fromsnap); |
481 | if (fromsnap_txg != 0) | |
482 | sd->fromsnap_txg = fromsnap_txg; | |
483 | ||
484 | tosnap_txg = get_snap_txg(zhp->zfs_hdl, zhp->zfs_name, sd->tosnap); | |
485 | if (tosnap_txg != 0) | |
486 | sd->tosnap_txg = tosnap_txg; | |
487 | ||
488 | /* | |
489 | * on the send side, if the current dataset does not have tosnap, | |
490 | * perform two additional checks: | |
491 | * | |
492 | * - skip sending the current dataset if it was created later than | |
493 | * the parent tosnap | |
494 | * - return error if the current dataset was created earlier than | |
495 | * the parent tosnap | |
496 | */ | |
497 | if (sd->tosnap != NULL && tosnap_txg == 0) { | |
498 | if (sd->tosnap_txg != 0 && txg > sd->tosnap_txg) { | |
499 | if (sd->verbose) { | |
500 | (void) fprintf(stderr, dgettext(TEXT_DOMAIN, | |
501 | "skipping dataset %s: snapshot %s does " | |
502 | "not exist\n"), zhp->zfs_name, sd->tosnap); | |
503 | } | |
504 | } else { | |
505 | (void) fprintf(stderr, dgettext(TEXT_DOMAIN, | |
506 | "cannot send %s@%s%s: snapshot %s@%s does not " | |
507 | "exist\n"), sd->fsname, sd->tosnap, sd->recursive ? | |
508 | dgettext(TEXT_DOMAIN, " recursively") : "", | |
509 | zhp->zfs_name, sd->tosnap); | |
30af21b0 | 510 | rv = EZFS_NOENT; |
66356240 K |
511 | } |
512 | goto out; | |
513 | } | |
514 | ||
4c0883fb AP |
515 | nvfs = fnvlist_alloc(); |
516 | fnvlist_add_string(nvfs, "name", zhp->zfs_name); | |
517 | fnvlist_add_uint64(nvfs, "parentfromsnap", | |
518 | sd->parent_fromsnap_guid); | |
34dc7c2f BB |
519 | |
520 | if (zhp->zfs_dmustats.dds_origin[0]) { | |
521 | zfs_handle_t *origin = zfs_open(zhp->zfs_hdl, | |
522 | zhp->zfs_dmustats.dds_origin, ZFS_TYPE_SNAPSHOT); | |
66356240 K |
523 | if (origin == NULL) { |
524 | rv = -1; | |
525 | goto out; | |
526 | } | |
4c0883fb AP |
527 | fnvlist_add_uint64(nvfs, "origin", |
528 | origin->zfs_dmustats.dds_guid); | |
ad7e908a TC |
529 | |
530 | zfs_close(origin); | |
34dc7c2f BB |
531 | } |
532 | ||
533 | /* iterate over props */ | |
9c5e88b1 | 534 | if (sd->props || sd->backup || sd->recursive) { |
4c0883fb | 535 | nv = fnvlist_alloc(); |
9c5e88b1 PZ |
536 | send_iterate_prop(zhp, sd->backup, nv); |
537 | } | |
b5256303 TC |
538 | if (zfs_prop_get_int(zhp, ZFS_PROP_ENCRYPTION) != ZIO_CRYPT_OFF) { |
539 | boolean_t encroot; | |
540 | ||
541 | /* determine if this dataset is an encryption root */ | |
542 | if (zfs_crypto_get_encryption_root(zhp, &encroot, NULL) != 0) { | |
543 | rv = -1; | |
544 | goto out; | |
545 | } | |
546 | ||
547 | if (encroot) | |
4c0883fb | 548 | fnvlist_add_boolean(nvfs, "is_encroot"); |
b5256303 TC |
549 | |
550 | /* | |
551 | * Encrypted datasets can only be sent with properties if | |
552 | * the raw flag is specified because the receive side doesn't | |
553 | * currently have a mechanism for recursively asking the user | |
554 | * for new encryption parameters. | |
555 | */ | |
556 | if (!sd->raw) { | |
557 | (void) fprintf(stderr, dgettext(TEXT_DOMAIN, | |
558 | "cannot send %s@%s: encrypted dataset %s may not " | |
559 | "be sent with properties without the raw flag\n"), | |
560 | sd->fsname, sd->tosnap, zhp->zfs_name); | |
561 | rv = -1; | |
562 | goto out; | |
563 | } | |
564 | ||
565 | } | |
566 | ||
9c5e88b1 | 567 | if (nv != NULL) |
4c0883fb | 568 | fnvlist_add_nvlist(nvfs, "props", nv); |
34dc7c2f BB |
569 | |
570 | /* iterate over snaps, and set sd->parent_fromsnap_guid */ | |
571 | sd->parent_fromsnap_guid = 0; | |
4c0883fb AP |
572 | sd->parent_snaps = fnvlist_alloc(); |
573 | sd->snapprops = fnvlist_alloc(); | |
9c5e88b1 PZ |
574 | if (sd->holds) |
575 | VERIFY(0 == nvlist_alloc(&sd->snapholds, NV_UNIQUE_NAME, 0)); | |
f94b3cbf TC |
576 | |
577 | ||
578 | /* | |
579 | * If this is a "doall" send, a replicate send or we're just trying | |
580 | * to gather a list of previous snapshots, iterate through all the | |
581 | * snaps in the txg range. Otherwise just look at the one we're | |
582 | * interested in. | |
583 | */ | |
584 | if (sd->doall || sd->replicate || sd->tosnap == NULL) { | |
585 | if (!sd->replicate && fromsnap_txg != 0) | |
586 | min_txg = fromsnap_txg; | |
587 | if (!sd->replicate && tosnap_txg != 0) | |
588 | max_txg = tosnap_txg; | |
589 | (void) zfs_iter_snapshots_sorted(zhp, send_iterate_snap, sd, | |
590 | min_txg, max_txg); | |
591 | } else { | |
592 | char snapname[MAXPATHLEN] = { 0 }; | |
593 | zfs_handle_t *snap; | |
594 | ||
f0ce0436 | 595 | (void) snprintf(snapname, sizeof (snapname), "%s@%s", |
f94b3cbf TC |
596 | zhp->zfs_name, sd->tosnap); |
597 | if (sd->fromsnap != NULL) | |
598 | sd->seenfrom = B_TRUE; | |
599 | snap = zfs_open(zhp->zfs_hdl, snapname, | |
600 | ZFS_TYPE_SNAPSHOT); | |
601 | if (snap != NULL) | |
602 | (void) send_iterate_snap(snap, sd); | |
603 | } | |
604 | ||
4c0883fb AP |
605 | fnvlist_add_nvlist(nvfs, "snaps", sd->parent_snaps); |
606 | fnvlist_add_nvlist(nvfs, "snapprops", sd->snapprops); | |
9c5e88b1 | 607 | if (sd->holds) |
4c0883fb AP |
608 | fnvlist_add_nvlist(nvfs, "snapholds", sd->snapholds); |
609 | fnvlist_free(sd->parent_snaps); | |
610 | fnvlist_free(sd->snapprops); | |
611 | fnvlist_free(sd->snapholds); | |
34dc7c2f | 612 | |
7a6c12fd AJ |
613 | /* Do not allow the size of the properties list to exceed the limit */ |
614 | if ((fnvlist_size(nvfs) + fnvlist_size(sd->fss)) > | |
615 | zhp->zfs_hdl->libzfs_max_nvlist) { | |
616 | (void) fprintf(stderr, dgettext(TEXT_DOMAIN, | |
617 | "warning: cannot send %s@%s: the size of the list of " | |
618 | "snapshots and properties is too large to be received " | |
619 | "successfully.\n" | |
620 | "Select a smaller number of snapshots to send.\n"), | |
621 | zhp->zfs_name, sd->tosnap); | |
622 | rv = EZFS_NOSPC; | |
623 | goto out; | |
624 | } | |
34dc7c2f BB |
625 | /* add this fs to nvlist */ |
626 | (void) snprintf(guidstring, sizeof (guidstring), | |
627 | "0x%llx", (longlong_t)guid); | |
4c0883fb | 628 | fnvlist_add_nvlist(sd->fss, guidstring, nvfs); |
34dc7c2f BB |
629 | |
630 | /* iterate over children */ | |
428870ff BB |
631 | if (sd->recursive) |
632 | rv = zfs_iter_filesystems(zhp, send_iterate_fs, sd); | |
34dc7c2f | 633 | |
66356240 | 634 | out: |
34dc7c2f | 635 | sd->parent_fromsnap_guid = parent_fromsnap_guid_save; |
66356240 K |
636 | sd->fromsnap_txg = fromsnap_txg_save; |
637 | sd->tosnap_txg = tosnap_txg_save; | |
4c0883fb AP |
638 | fnvlist_free(nv); |
639 | fnvlist_free(nvfs); | |
34dc7c2f BB |
640 | |
641 | zfs_close(zhp); | |
642 | return (rv); | |
643 | } | |
644 | ||
645 | static int | |
646 | gather_nvlist(libzfs_handle_t *hdl, const char *fsname, const char *fromsnap, | |
f94b3cbf TC |
647 | const char *tosnap, boolean_t recursive, boolean_t raw, boolean_t doall, |
648 | boolean_t replicate, boolean_t verbose, boolean_t backup, boolean_t holds, | |
649 | boolean_t props, nvlist_t **nvlp, avl_tree_t **avlp) | |
34dc7c2f BB |
650 | { |
651 | zfs_handle_t *zhp; | |
652 | send_data_t sd = { 0 }; | |
653 | int error; | |
654 | ||
655 | zhp = zfs_open(hdl, fsname, ZFS_TYPE_FILESYSTEM | ZFS_TYPE_VOLUME); | |
656 | if (zhp == NULL) | |
657 | return (EZFS_BADTYPE); | |
658 | ||
659 | VERIFY(0 == nvlist_alloc(&sd.fss, NV_UNIQUE_NAME, 0)); | |
66356240 | 660 | sd.fsname = fsname; |
34dc7c2f BB |
661 | sd.fromsnap = fromsnap; |
662 | sd.tosnap = tosnap; | |
428870ff | 663 | sd.recursive = recursive; |
b5256303 | 664 | sd.raw = raw; |
f94b3cbf | 665 | sd.doall = doall; |
4c0883fb | 666 | sd.replicate = replicate; |
66356240 | 667 | sd.verbose = verbose; |
faa97c16 | 668 | sd.backup = backup; |
9c5e88b1 PZ |
669 | sd.holds = holds; |
670 | sd.props = props; | |
34dc7c2f BB |
671 | |
672 | if ((error = send_iterate_fs(zhp, &sd)) != 0) { | |
673 | nvlist_free(sd.fss); | |
674 | if (avlp != NULL) | |
675 | *avlp = NULL; | |
676 | *nvlp = NULL; | |
677 | return (error); | |
678 | } | |
679 | ||
680 | if (avlp != NULL && (*avlp = fsavl_create(sd.fss)) == NULL) { | |
681 | nvlist_free(sd.fss); | |
682 | *nvlp = NULL; | |
683 | return (EZFS_NOMEM); | |
684 | } | |
685 | ||
686 | *nvlp = sd.fss; | |
687 | return (0); | |
688 | } | |
689 | ||
34dc7c2f BB |
690 | /* |
691 | * Routines specific to "zfs send" | |
692 | */ | |
693 | typedef struct send_dump_data { | |
694 | /* these are all just the short snapname (the part after the @) */ | |
695 | const char *fromsnap; | |
696 | const char *tosnap; | |
eca7b760 | 697 | char prevsnap[ZFS_MAX_DATASET_NAME_LEN]; |
572e2857 | 698 | uint64_t prevsnap_obj; |
34dc7c2f | 699 | boolean_t seenfrom, seento, replicate, doall, fromorigin; |
30af21b0 | 700 | boolean_t dryrun, parsable, progress, embed_data, std_out; |
9c5e88b1 | 701 | boolean_t large_block, compress, raw, holds; |
34dc7c2f BB |
702 | int outfd; |
703 | boolean_t err; | |
704 | nvlist_t *fss; | |
95fd54a1 | 705 | nvlist_t *snapholds; |
34dc7c2f | 706 | avl_tree_t *fsavl; |
428870ff BB |
707 | snapfilter_cb_t *filter_cb; |
708 | void *filter_cb_arg; | |
709 | nvlist_t *debugnv; | |
eca7b760 | 710 | char holdtag[ZFS_MAX_DATASET_NAME_LEN]; |
572e2857 | 711 | int cleanup_fd; |
30af21b0 | 712 | int verbosity; |
330d06f9 | 713 | uint64_t size; |
34dc7c2f BB |
714 | } send_dump_data_t; |
715 | ||
330d06f9 | 716 | static int |
cf7684bc | 717 | zfs_send_space(zfs_handle_t *zhp, const char *snapname, const char *from, |
718 | enum lzc_send_flags flags, uint64_t *spacep) | |
330d06f9 | 719 | { |
330d06f9 | 720 | libzfs_handle_t *hdl = zhp->zfs_hdl; |
cf7684bc | 721 | int error; |
330d06f9 | 722 | |
cf7684bc | 723 | assert(snapname != NULL); |
724 | error = lzc_send_space(snapname, from, flags, spacep); | |
330d06f9 | 725 | |
cf7684bc | 726 | if (error != 0) { |
330d06f9 MA |
727 | char errbuf[1024]; |
728 | (void) snprintf(errbuf, sizeof (errbuf), dgettext(TEXT_DOMAIN, | |
cf7684bc | 729 | "warning: cannot estimate space for '%s'"), snapname); |
330d06f9 | 730 | |
cf7684bc | 731 | switch (error) { |
330d06f9 MA |
732 | case EXDEV: |
733 | zfs_error_aux(hdl, dgettext(TEXT_DOMAIN, | |
734 | "not an earlier snapshot from the same fs")); | |
735 | return (zfs_error(hdl, EZFS_CROSSTARGET, errbuf)); | |
736 | ||
737 | case ENOENT: | |
cf7684bc | 738 | if (zfs_dataset_exists(hdl, snapname, |
330d06f9 MA |
739 | ZFS_TYPE_SNAPSHOT)) { |
740 | zfs_error_aux(hdl, dgettext(TEXT_DOMAIN, | |
cf7684bc | 741 | "incremental source (%s) does not exist"), |
742 | snapname); | |
330d06f9 MA |
743 | } |
744 | return (zfs_error(hdl, EZFS_NOENT, errbuf)); | |
745 | ||
746 | case EDQUOT: | |
747 | case EFBIG: | |
748 | case EIO: | |
749 | case ENOLINK: | |
750 | case ENOSPC: | |
751 | case ENOSTR: | |
752 | case ENXIO: | |
753 | case EPIPE: | |
754 | case ERANGE: | |
755 | case EFAULT: | |
756 | case EROFS: | |
cf7684bc | 757 | case EINVAL: |
758 | zfs_error_aux(hdl, strerror(error)); | |
330d06f9 MA |
759 | return (zfs_error(hdl, EZFS_BADBACKUP, errbuf)); |
760 | ||
761 | default: | |
cf7684bc | 762 | return (zfs_standard_error(hdl, error, errbuf)); |
330d06f9 MA |
763 | } |
764 | } | |
765 | ||
330d06f9 MA |
766 | return (0); |
767 | } | |
768 | ||
34dc7c2f BB |
769 | /* |
770 | * Dumps a backup of the given snapshot (incremental from fromsnap if it's not | |
771 | * NULL) to the file descriptor specified by outfd. | |
772 | */ | |
773 | static int | |
572e2857 | 774 | dump_ioctl(zfs_handle_t *zhp, const char *fromsnap, uint64_t fromsnap_obj, |
9b67f605 MA |
775 | boolean_t fromorigin, int outfd, enum lzc_send_flags flags, |
776 | nvlist_t *debugnv) | |
34dc7c2f | 777 | { |
13fe0198 | 778 | zfs_cmd_t zc = {"\0"}; |
34dc7c2f | 779 | libzfs_handle_t *hdl = zhp->zfs_hdl; |
428870ff | 780 | nvlist_t *thisdbg; |
34dc7c2f BB |
781 | |
782 | assert(zhp->zfs_type == ZFS_TYPE_SNAPSHOT); | |
572e2857 | 783 | assert(fromsnap_obj == 0 || !fromorigin); |
34dc7c2f BB |
784 | |
785 | (void) strlcpy(zc.zc_name, zhp->zfs_name, sizeof (zc.zc_name)); | |
34dc7c2f BB |
786 | zc.zc_cookie = outfd; |
787 | zc.zc_obj = fromorigin; | |
572e2857 BB |
788 | zc.zc_sendobj = zfs_prop_get_int(zhp, ZFS_PROP_OBJSETID); |
789 | zc.zc_fromobj = fromsnap_obj; | |
9b67f605 | 790 | zc.zc_flags = flags; |
428870ff BB |
791 | |
792 | VERIFY(0 == nvlist_alloc(&thisdbg, NV_UNIQUE_NAME, 0)); | |
793 | if (fromsnap && fromsnap[0] != '\0') { | |
794 | VERIFY(0 == nvlist_add_string(thisdbg, | |
795 | "fromsnap", fromsnap)); | |
796 | } | |
797 | ||
330d06f9 | 798 | if (zfs_ioctl(zhp->zfs_hdl, ZFS_IOC_SEND, &zc) != 0) { |
34dc7c2f BB |
799 | char errbuf[1024]; |
800 | (void) snprintf(errbuf, sizeof (errbuf), dgettext(TEXT_DOMAIN, | |
801 | "warning: cannot send '%s'"), zhp->zfs_name); | |
802 | ||
428870ff BB |
803 | VERIFY(0 == nvlist_add_uint64(thisdbg, "error", errno)); |
804 | if (debugnv) { | |
805 | VERIFY(0 == nvlist_add_nvlist(debugnv, | |
806 | zhp->zfs_name, thisdbg)); | |
807 | } | |
808 | nvlist_free(thisdbg); | |
809 | ||
34dc7c2f | 810 | switch (errno) { |
34dc7c2f BB |
811 | case EXDEV: |
812 | zfs_error_aux(hdl, dgettext(TEXT_DOMAIN, | |
813 | "not an earlier snapshot from the same fs")); | |
814 | return (zfs_error(hdl, EZFS_CROSSTARGET, errbuf)); | |
815 | ||
b5256303 TC |
816 | case EACCES: |
817 | zfs_error_aux(hdl, dgettext(TEXT_DOMAIN, | |
818 | "source key must be loaded")); | |
819 | return (zfs_error(hdl, EZFS_CRYPTOFAILED, errbuf)); | |
820 | ||
34dc7c2f BB |
821 | case ENOENT: |
822 | if (zfs_dataset_exists(hdl, zc.zc_name, | |
823 | ZFS_TYPE_SNAPSHOT)) { | |
824 | zfs_error_aux(hdl, dgettext(TEXT_DOMAIN, | |
825 | "incremental source (@%s) does not exist"), | |
826 | zc.zc_value); | |
827 | } | |
828 | return (zfs_error(hdl, EZFS_NOENT, errbuf)); | |
829 | ||
830 | case EDQUOT: | |
831 | case EFBIG: | |
832 | case EIO: | |
833 | case ENOLINK: | |
834 | case ENOSPC: | |
835 | case ENOSTR: | |
836 | case ENXIO: | |
837 | case EPIPE: | |
838 | case ERANGE: | |
839 | case EFAULT: | |
840 | case EROFS: | |
841 | zfs_error_aux(hdl, strerror(errno)); | |
842 | return (zfs_error(hdl, EZFS_BADBACKUP, errbuf)); | |
843 | ||
844 | default: | |
845 | return (zfs_standard_error(hdl, errno, errbuf)); | |
846 | } | |
847 | } | |
848 | ||
428870ff BB |
849 | if (debugnv) |
850 | VERIFY(0 == nvlist_add_nvlist(debugnv, zhp->zfs_name, thisdbg)); | |
851 | nvlist_free(thisdbg); | |
852 | ||
34dc7c2f BB |
853 | return (0); |
854 | } | |
855 | ||
95fd54a1 SH |
856 | static void |
857 | gather_holds(zfs_handle_t *zhp, send_dump_data_t *sdd) | |
572e2857 | 858 | { |
572e2857 BB |
859 | assert(zhp->zfs_type == ZFS_TYPE_SNAPSHOT); |
860 | ||
861 | /* | |
95fd54a1 | 862 | * zfs_send() only sets snapholds for sends that need them, |
572e2857 BB |
863 | * e.g. replication and doall. |
864 | */ | |
95fd54a1 SH |
865 | if (sdd->snapholds == NULL) |
866 | return; | |
572e2857 | 867 | |
95fd54a1 | 868 | fnvlist_add_string(sdd->snapholds, zhp->zfs_name, sdd->holdtag); |
572e2857 BB |
869 | } |
870 | ||
30af21b0 PD |
871 | int |
872 | zfs_send_progress(zfs_handle_t *zhp, int fd, uint64_t *bytes_written, | |
873 | uint64_t *blocks_visited) | |
874 | { | |
659f4008 RM |
875 | zfs_cmd_t zc = {"\0"}; |
876 | ||
30af21b0 PD |
877 | (void) strlcpy(zc.zc_name, zhp->zfs_name, sizeof (zc.zc_name)); |
878 | zc.zc_cookie = fd; | |
879 | if (zfs_ioctl(zhp->zfs_hdl, ZFS_IOC_SEND_PROGRESS, &zc) != 0) | |
880 | return (errno); | |
881 | if (bytes_written != NULL) | |
882 | *bytes_written = zc.zc_cookie; | |
883 | if (blocks_visited != NULL) | |
884 | *blocks_visited = zc.zc_objset_type; | |
885 | return (0); | |
886 | } | |
887 | ||
37abac6d BP |
888 | static void * |
889 | send_progress_thread(void *arg) | |
890 | { | |
891 | progress_arg_t *pa = arg; | |
37abac6d | 892 | zfs_handle_t *zhp = pa->pa_zhp; |
30af21b0 PD |
893 | uint64_t bytes; |
894 | uint64_t blocks; | |
37abac6d | 895 | char buf[16]; |
37abac6d BP |
896 | time_t t; |
897 | struct tm *tm; | |
30af21b0 | 898 | boolean_t firstloop = B_TRUE; |
37abac6d BP |
899 | |
900 | /* | |
901 | * Print the progress from ZFS_IOC_SEND_PROGRESS every second. | |
902 | */ | |
903 | for (;;) { | |
30af21b0 | 904 | int err; |
37abac6d | 905 | (void) sleep(1); |
30af21b0 PD |
906 | if ((err = zfs_send_progress(zhp, pa->pa_fd, &bytes, |
907 | &blocks)) != 0) { | |
908 | if (err == EINTR || err == ENOENT) | |
909 | return ((void *)0); | |
910 | return ((void *)(uintptr_t)err); | |
911 | } | |
37abac6d | 912 | |
30af21b0 PD |
913 | if (firstloop && !pa->pa_parsable) { |
914 | (void) fprintf(stderr, | |
915 | "TIME %s %sSNAPSHOT %s\n", | |
916 | pa->pa_estimate ? "BYTES" : " SENT", | |
917 | pa->pa_verbosity >= 2 ? " BLOCKS " : "", | |
918 | zhp->zfs_name); | |
919 | firstloop = B_FALSE; | |
920 | } | |
37abac6d BP |
921 | |
922 | (void) time(&t); | |
923 | tm = localtime(&t); | |
37abac6d | 924 | |
30af21b0 PD |
925 | if (pa->pa_verbosity >= 2 && pa->pa_parsable) { |
926 | (void) fprintf(stderr, | |
927 | "%02d:%02d:%02d\t%llu\t%llu\t%s\n", | |
928 | tm->tm_hour, tm->tm_min, tm->tm_sec, | |
929 | (u_longlong_t)bytes, (u_longlong_t)blocks, | |
930 | zhp->zfs_name); | |
931 | } else if (pa->pa_verbosity >= 2) { | |
932 | zfs_nicenum(bytes, buf, sizeof (buf)); | |
933 | (void) fprintf(stderr, | |
934 | "%02d:%02d:%02d %5s %8llu %s\n", | |
935 | tm->tm_hour, tm->tm_min, tm->tm_sec, | |
936 | buf, (u_longlong_t)blocks, zhp->zfs_name); | |
937 | } else if (pa->pa_parsable) { | |
37abac6d BP |
938 | (void) fprintf(stderr, "%02d:%02d:%02d\t%llu\t%s\n", |
939 | tm->tm_hour, tm->tm_min, tm->tm_sec, | |
30af21b0 | 940 | (u_longlong_t)bytes, zhp->zfs_name); |
37abac6d | 941 | } else { |
e7fbeb60 | 942 | zfs_nicebytes(bytes, buf, sizeof (buf)); |
37abac6d BP |
943 | (void) fprintf(stderr, "%02d:%02d:%02d %5s %s\n", |
944 | tm->tm_hour, tm->tm_min, tm->tm_sec, | |
945 | buf, zhp->zfs_name); | |
946 | } | |
947 | } | |
948 | } | |
949 | ||
47dfff3b MA |
950 | static void |
951 | send_print_verbose(FILE *fout, const char *tosnap, const char *fromsnap, | |
952 | uint64_t size, boolean_t parsable) | |
953 | { | |
954 | if (parsable) { | |
955 | if (fromsnap != NULL) { | |
956 | (void) fprintf(fout, "incremental\t%s\t%s", | |
957 | fromsnap, tosnap); | |
958 | } else { | |
959 | (void) fprintf(fout, "full\t%s", | |
960 | tosnap); | |
961 | } | |
962 | } else { | |
963 | if (fromsnap != NULL) { | |
964 | if (strchr(fromsnap, '@') == NULL && | |
965 | strchr(fromsnap, '#') == NULL) { | |
966 | (void) fprintf(fout, dgettext(TEXT_DOMAIN, | |
967 | "send from @%s to %s"), | |
968 | fromsnap, tosnap); | |
969 | } else { | |
970 | (void) fprintf(fout, dgettext(TEXT_DOMAIN, | |
971 | "send from %s to %s"), | |
972 | fromsnap, tosnap); | |
973 | } | |
974 | } else { | |
975 | (void) fprintf(fout, dgettext(TEXT_DOMAIN, | |
976 | "full send of %s"), | |
977 | tosnap); | |
978 | } | |
979 | } | |
980 | ||
835db585 | 981 | if (parsable) { |
982 | (void) fprintf(fout, "\t%llu", | |
983 | (longlong_t)size); | |
984 | } else if (size != 0) { | |
985 | char buf[16]; | |
986 | zfs_nicebytes(size, buf, sizeof (buf)); | |
987 | (void) fprintf(fout, dgettext(TEXT_DOMAIN, | |
988 | " estimated size is %s"), buf); | |
47dfff3b MA |
989 | } |
990 | (void) fprintf(fout, "\n"); | |
991 | } | |
992 | ||
34dc7c2f BB |
993 | static int |
994 | dump_snapshot(zfs_handle_t *zhp, void *arg) | |
995 | { | |
996 | send_dump_data_t *sdd = arg; | |
37abac6d BP |
997 | progress_arg_t pa = { 0 }; |
998 | pthread_t tid; | |
572e2857 | 999 | char *thissnap; |
2aa34383 | 1000 | enum lzc_send_flags flags = 0; |
34dc7c2f | 1001 | int err; |
330d06f9 | 1002 | boolean_t isfromsnap, istosnap, fromorigin; |
428870ff | 1003 | boolean_t exclude = B_FALSE; |
93f6d7e2 | 1004 | FILE *fout = sdd->std_out ? stdout : stderr; |
34dc7c2f | 1005 | |
95fd54a1 | 1006 | err = 0; |
34dc7c2f | 1007 | thissnap = strchr(zhp->zfs_name, '@') + 1; |
428870ff BB |
1008 | isfromsnap = (sdd->fromsnap != NULL && |
1009 | strcmp(sdd->fromsnap, thissnap) == 0); | |
34dc7c2f | 1010 | |
428870ff | 1011 | if (!sdd->seenfrom && isfromsnap) { |
95fd54a1 SH |
1012 | gather_holds(zhp, sdd); |
1013 | sdd->seenfrom = B_TRUE; | |
c9d61adb | 1014 | (void) strlcpy(sdd->prevsnap, thissnap, |
1015 | sizeof (sdd->prevsnap)); | |
95fd54a1 | 1016 | sdd->prevsnap_obj = zfs_prop_get_int(zhp, ZFS_PROP_OBJSETID); |
34dc7c2f | 1017 | zfs_close(zhp); |
95fd54a1 | 1018 | return (0); |
34dc7c2f BB |
1019 | } |
1020 | ||
1021 | if (sdd->seento || !sdd->seenfrom) { | |
1022 | zfs_close(zhp); | |
1023 | return (0); | |
1024 | } | |
1025 | ||
428870ff BB |
1026 | istosnap = (strcmp(sdd->tosnap, thissnap) == 0); |
1027 | if (istosnap) | |
1028 | sdd->seento = B_TRUE; | |
1029 | ||
2aa34383 DK |
1030 | if (sdd->large_block) |
1031 | flags |= LZC_SEND_FLAG_LARGE_BLOCK; | |
1032 | if (sdd->embed_data) | |
1033 | flags |= LZC_SEND_FLAG_EMBED_DATA; | |
1034 | if (sdd->compress) | |
1035 | flags |= LZC_SEND_FLAG_COMPRESS; | |
b5256303 TC |
1036 | if (sdd->raw) |
1037 | flags |= LZC_SEND_FLAG_RAW; | |
2aa34383 | 1038 | |
428870ff BB |
1039 | if (!sdd->doall && !isfromsnap && !istosnap) { |
1040 | if (sdd->replicate) { | |
1041 | char *snapname; | |
1042 | nvlist_t *snapprops; | |
1043 | /* | |
1044 | * Filter out all intermediate snapshots except origin | |
1045 | * snapshots needed to replicate clones. | |
1046 | */ | |
1047 | nvlist_t *nvfs = fsavl_find(sdd->fsavl, | |
1048 | zhp->zfs_dmustats.dds_guid, &snapname); | |
1049 | ||
1050 | VERIFY(0 == nvlist_lookup_nvlist(nvfs, | |
1051 | "snapprops", &snapprops)); | |
1052 | VERIFY(0 == nvlist_lookup_nvlist(snapprops, | |
1053 | thissnap, &snapprops)); | |
1054 | exclude = !nvlist_exists(snapprops, "is_clone_origin"); | |
1055 | } else { | |
1056 | exclude = B_TRUE; | |
1057 | } | |
1058 | } | |
1059 | ||
1060 | /* | |
1061 | * If a filter function exists, call it to determine whether | |
1062 | * this snapshot will be sent. | |
1063 | */ | |
1064 | if (exclude || (sdd->filter_cb != NULL && | |
1065 | sdd->filter_cb(zhp, sdd->filter_cb_arg) == B_FALSE)) { | |
1066 | /* | |
1067 | * This snapshot is filtered out. Don't send it, and don't | |
572e2857 | 1068 | * set prevsnap_obj, so it will be as if this snapshot didn't |
428870ff BB |
1069 | * exist, and the next accepted snapshot will be sent as |
1070 | * an incremental from the last accepted one, or as the | |
1071 | * first (and full) snapshot in the case of a replication, | |
1072 | * non-incremental send. | |
1073 | */ | |
1074 | zfs_close(zhp); | |
1075 | return (0); | |
1076 | } | |
1077 | ||
95fd54a1 | 1078 | gather_holds(zhp, sdd); |
330d06f9 MA |
1079 | fromorigin = sdd->prevsnap[0] == '\0' && |
1080 | (sdd->fromorigin || sdd->replicate); | |
1081 | ||
30af21b0 | 1082 | if (sdd->verbosity != 0) { |
47dfff3b | 1083 | uint64_t size = 0; |
cf7684bc | 1084 | char fromds[ZFS_MAX_DATASET_NAME_LEN]; |
330d06f9 | 1085 | |
cf7684bc | 1086 | if (sdd->prevsnap[0] != '\0') { |
1087 | (void) strlcpy(fromds, zhp->zfs_name, sizeof (fromds)); | |
1088 | *(strchr(fromds, '@') + 1) = '\0'; | |
1089 | (void) strlcat(fromds, sdd->prevsnap, sizeof (fromds)); | |
1090 | } | |
1091 | if (zfs_send_space(zhp, zhp->zfs_name, | |
1092 | sdd->prevsnap[0] ? fromds : NULL, flags, &size) != 0) { | |
1093 | size = 0; /* cannot estimate send space */ | |
1094 | } else { | |
1095 | send_print_verbose(fout, zhp->zfs_name, | |
1096 | sdd->prevsnap[0] ? sdd->prevsnap : NULL, | |
1097 | size, sdd->parsable); | |
1098 | } | |
47dfff3b | 1099 | sdd->size += size; |
34dc7c2f BB |
1100 | } |
1101 | ||
330d06f9 | 1102 | if (!sdd->dryrun) { |
37abac6d BP |
1103 | /* |
1104 | * If progress reporting is requested, spawn a new thread to | |
1105 | * poll ZFS_IOC_SEND_PROGRESS at a regular interval. | |
1106 | */ | |
1107 | if (sdd->progress) { | |
1108 | pa.pa_zhp = zhp; | |
1109 | pa.pa_fd = sdd->outfd; | |
1110 | pa.pa_parsable = sdd->parsable; | |
30af21b0 PD |
1111 | pa.pa_estimate = B_FALSE; |
1112 | pa.pa_verbosity = sdd->verbosity; | |
37abac6d BP |
1113 | |
1114 | if ((err = pthread_create(&tid, NULL, | |
23d70cde | 1115 | send_progress_thread, &pa)) != 0) { |
37abac6d BP |
1116 | zfs_close(zhp); |
1117 | return (err); | |
1118 | } | |
1119 | } | |
1120 | ||
330d06f9 | 1121 | err = dump_ioctl(zhp, sdd->prevsnap, sdd->prevsnap_obj, |
9b67f605 | 1122 | fromorigin, sdd->outfd, flags, sdd->debugnv); |
37abac6d BP |
1123 | |
1124 | if (sdd->progress) { | |
30af21b0 | 1125 | void *status = NULL; |
37abac6d | 1126 | (void) pthread_cancel(tid); |
30af21b0 PD |
1127 | (void) pthread_join(tid, &status); |
1128 | int error = (int)(uintptr_t)status; | |
1129 | if (error != 0 && status != PTHREAD_CANCELED) { | |
1130 | char errbuf[1024]; | |
1131 | (void) snprintf(errbuf, sizeof (errbuf), | |
1132 | dgettext(TEXT_DOMAIN, | |
1133 | "progress thread exited nonzero")); | |
1134 | return (zfs_standard_error(zhp->zfs_hdl, error, | |
1135 | errbuf)); | |
1136 | } | |
37abac6d | 1137 | } |
330d06f9 | 1138 | } |
34dc7c2f | 1139 | |
572e2857 BB |
1140 | (void) strcpy(sdd->prevsnap, thissnap); |
1141 | sdd->prevsnap_obj = zfs_prop_get_int(zhp, ZFS_PROP_OBJSETID); | |
34dc7c2f BB |
1142 | zfs_close(zhp); |
1143 | return (err); | |
1144 | } | |
1145 | ||
1146 | static int | |
1147 | dump_filesystem(zfs_handle_t *zhp, void *arg) | |
1148 | { | |
1149 | int rv = 0; | |
1150 | send_dump_data_t *sdd = arg; | |
1151 | boolean_t missingfrom = B_FALSE; | |
13fe0198 | 1152 | zfs_cmd_t zc = {"\0"}; |
4c0883fb | 1153 | uint64_t min_txg = 0, max_txg = 0; |
34dc7c2f BB |
1154 | |
1155 | (void) snprintf(zc.zc_name, sizeof (zc.zc_name), "%s@%s", | |
1156 | zhp->zfs_name, sdd->tosnap); | |
b834b58a | 1157 | if (zfs_ioctl(zhp->zfs_hdl, ZFS_IOC_OBJSET_STATS, &zc) != 0) { |
330d06f9 MA |
1158 | (void) fprintf(stderr, dgettext(TEXT_DOMAIN, |
1159 | "WARNING: could not send %s@%s: does not exist\n"), | |
34dc7c2f BB |
1160 | zhp->zfs_name, sdd->tosnap); |
1161 | sdd->err = B_TRUE; | |
1162 | return (0); | |
1163 | } | |
1164 | ||
1165 | if (sdd->replicate && sdd->fromsnap) { | |
1166 | /* | |
1167 | * If this fs does not have fromsnap, and we're doing | |
1168 | * recursive, we need to send a full stream from the | |
1169 | * beginning (or an incremental from the origin if this | |
1170 | * is a clone). If we're doing non-recursive, then let | |
1171 | * them get the error. | |
1172 | */ | |
1173 | (void) snprintf(zc.zc_name, sizeof (zc.zc_name), "%s@%s", | |
1174 | zhp->zfs_name, sdd->fromsnap); | |
b834b58a | 1175 | if (zfs_ioctl(zhp->zfs_hdl, |
34dc7c2f BB |
1176 | ZFS_IOC_OBJSET_STATS, &zc) != 0) { |
1177 | missingfrom = B_TRUE; | |
1178 | } | |
1179 | } | |
1180 | ||
428870ff | 1181 | sdd->seenfrom = sdd->seento = sdd->prevsnap[0] = 0; |
572e2857 | 1182 | sdd->prevsnap_obj = 0; |
428870ff BB |
1183 | if (sdd->fromsnap == NULL || missingfrom) |
1184 | sdd->seenfrom = B_TRUE; | |
34dc7c2f | 1185 | |
4c0883fb | 1186 | |
f94b3cbf TC |
1187 | |
1188 | /* | |
1189 | * Iterate through all snapshots and process the ones we will be | |
1190 | * sending. If we only have a "from" and "to" snapshot to deal | |
1191 | * with, we can avoid iterating through all the other snapshots. | |
1192 | */ | |
1193 | if (sdd->doall || sdd->replicate || sdd->tosnap == NULL) { | |
1194 | if (!sdd->replicate && sdd->fromsnap != NULL) | |
1195 | min_txg = get_snap_txg(zhp->zfs_hdl, zhp->zfs_name, | |
1196 | sdd->fromsnap); | |
1197 | if (!sdd->replicate && sdd->tosnap != NULL) | |
1198 | max_txg = get_snap_txg(zhp->zfs_hdl, zhp->zfs_name, | |
1199 | sdd->tosnap); | |
1200 | rv = zfs_iter_snapshots_sorted(zhp, dump_snapshot, arg, | |
1201 | min_txg, max_txg); | |
1202 | } else { | |
1203 | char snapname[MAXPATHLEN] = { 0 }; | |
1204 | zfs_handle_t *snap; | |
1205 | ||
1206 | if (!sdd->seenfrom) { | |
f0ce0436 | 1207 | (void) snprintf(snapname, sizeof (snapname), |
f94b3cbf TC |
1208 | "%s@%s", zhp->zfs_name, sdd->fromsnap); |
1209 | snap = zfs_open(zhp->zfs_hdl, snapname, | |
1210 | ZFS_TYPE_SNAPSHOT); | |
1211 | if (snap != NULL) | |
1212 | rv = dump_snapshot(snap, sdd); | |
1213 | else | |
1214 | rv = -1; | |
1215 | } | |
1216 | ||
1217 | if (rv == 0) { | |
f0ce0436 | 1218 | (void) snprintf(snapname, sizeof (snapname), |
f94b3cbf TC |
1219 | "%s@%s", zhp->zfs_name, sdd->tosnap); |
1220 | snap = zfs_open(zhp->zfs_hdl, snapname, | |
1221 | ZFS_TYPE_SNAPSHOT); | |
1222 | if (snap != NULL) | |
1223 | rv = dump_snapshot(snap, sdd); | |
1224 | else | |
1225 | rv = -1; | |
1226 | } | |
1227 | } | |
1228 | ||
428870ff | 1229 | if (!sdd->seenfrom) { |
330d06f9 | 1230 | (void) fprintf(stderr, dgettext(TEXT_DOMAIN, |
428870ff | 1231 | "WARNING: could not send %s@%s:\n" |
330d06f9 | 1232 | "incremental source (%s@%s) does not exist\n"), |
428870ff BB |
1233 | zhp->zfs_name, sdd->tosnap, |
1234 | zhp->zfs_name, sdd->fromsnap); | |
1235 | sdd->err = B_TRUE; | |
1236 | } else if (!sdd->seento) { | |
1237 | if (sdd->fromsnap) { | |
330d06f9 | 1238 | (void) fprintf(stderr, dgettext(TEXT_DOMAIN, |
34dc7c2f | 1239 | "WARNING: could not send %s@%s:\n" |
428870ff | 1240 | "incremental source (%s@%s) " |
330d06f9 | 1241 | "is not earlier than it\n"), |
34dc7c2f BB |
1242 | zhp->zfs_name, sdd->tosnap, |
1243 | zhp->zfs_name, sdd->fromsnap); | |
34dc7c2f | 1244 | } else { |
330d06f9 MA |
1245 | (void) fprintf(stderr, dgettext(TEXT_DOMAIN, |
1246 | "WARNING: " | |
1247 | "could not send %s@%s: does not exist\n"), | |
428870ff | 1248 | zhp->zfs_name, sdd->tosnap); |
34dc7c2f | 1249 | } |
428870ff | 1250 | sdd->err = B_TRUE; |
34dc7c2f BB |
1251 | } |
1252 | ||
1253 | return (rv); | |
1254 | } | |
1255 | ||
1256 | static int | |
1257 | dump_filesystems(zfs_handle_t *rzhp, void *arg) | |
1258 | { | |
1259 | send_dump_data_t *sdd = arg; | |
1260 | nvpair_t *fspair; | |
1261 | boolean_t needagain, progress; | |
1262 | ||
1263 | if (!sdd->replicate) | |
1264 | return (dump_filesystem(rzhp, sdd)); | |
1265 | ||
428870ff BB |
1266 | /* Mark the clone origin snapshots. */ |
1267 | for (fspair = nvlist_next_nvpair(sdd->fss, NULL); fspair; | |
1268 | fspair = nvlist_next_nvpair(sdd->fss, fspair)) { | |
1269 | nvlist_t *nvfs; | |
1270 | uint64_t origin_guid = 0; | |
1271 | ||
1272 | VERIFY(0 == nvpair_value_nvlist(fspair, &nvfs)); | |
1273 | (void) nvlist_lookup_uint64(nvfs, "origin", &origin_guid); | |
1274 | if (origin_guid != 0) { | |
1275 | char *snapname; | |
1276 | nvlist_t *origin_nv = fsavl_find(sdd->fsavl, | |
1277 | origin_guid, &snapname); | |
1278 | if (origin_nv != NULL) { | |
1279 | nvlist_t *snapprops; | |
1280 | VERIFY(0 == nvlist_lookup_nvlist(origin_nv, | |
1281 | "snapprops", &snapprops)); | |
1282 | VERIFY(0 == nvlist_lookup_nvlist(snapprops, | |
1283 | snapname, &snapprops)); | |
1284 | VERIFY(0 == nvlist_add_boolean( | |
1285 | snapprops, "is_clone_origin")); | |
1286 | } | |
1287 | } | |
1288 | } | |
34dc7c2f BB |
1289 | again: |
1290 | needagain = progress = B_FALSE; | |
1291 | for (fspair = nvlist_next_nvpair(sdd->fss, NULL); fspair; | |
1292 | fspair = nvlist_next_nvpair(sdd->fss, fspair)) { | |
330d06f9 | 1293 | nvlist_t *fslist, *parent_nv; |
34dc7c2f BB |
1294 | char *fsname; |
1295 | zfs_handle_t *zhp; | |
1296 | int err; | |
1297 | uint64_t origin_guid = 0; | |
330d06f9 | 1298 | uint64_t parent_guid = 0; |
34dc7c2f BB |
1299 | |
1300 | VERIFY(nvpair_value_nvlist(fspair, &fslist) == 0); | |
1301 | if (nvlist_lookup_boolean(fslist, "sent") == 0) | |
1302 | continue; | |
1303 | ||
1304 | VERIFY(nvlist_lookup_string(fslist, "name", &fsname) == 0); | |
1305 | (void) nvlist_lookup_uint64(fslist, "origin", &origin_guid); | |
330d06f9 MA |
1306 | (void) nvlist_lookup_uint64(fslist, "parentfromsnap", |
1307 | &parent_guid); | |
1308 | ||
1309 | if (parent_guid != 0) { | |
1310 | parent_nv = fsavl_find(sdd->fsavl, parent_guid, NULL); | |
1311 | if (!nvlist_exists(parent_nv, "sent")) { | |
1312 | /* parent has not been sent; skip this one */ | |
1313 | needagain = B_TRUE; | |
1314 | continue; | |
1315 | } | |
1316 | } | |
34dc7c2f | 1317 | |
428870ff BB |
1318 | if (origin_guid != 0) { |
1319 | nvlist_t *origin_nv = fsavl_find(sdd->fsavl, | |
1320 | origin_guid, NULL); | |
1321 | if (origin_nv != NULL && | |
330d06f9 | 1322 | !nvlist_exists(origin_nv, "sent")) { |
428870ff BB |
1323 | /* |
1324 | * origin has not been sent yet; | |
1325 | * skip this clone. | |
1326 | */ | |
1327 | needagain = B_TRUE; | |
1328 | continue; | |
1329 | } | |
34dc7c2f BB |
1330 | } |
1331 | ||
1332 | zhp = zfs_open(rzhp->zfs_hdl, fsname, ZFS_TYPE_DATASET); | |
1333 | if (zhp == NULL) | |
1334 | return (-1); | |
1335 | err = dump_filesystem(zhp, sdd); | |
1336 | VERIFY(nvlist_add_boolean(fslist, "sent") == 0); | |
1337 | progress = B_TRUE; | |
1338 | zfs_close(zhp); | |
1339 | if (err) | |
1340 | return (err); | |
1341 | } | |
1342 | if (needagain) { | |
1343 | assert(progress); | |
1344 | goto again; | |
1345 | } | |
330d06f9 MA |
1346 | |
1347 | /* clean out the sent flags in case we reuse this fss */ | |
1348 | for (fspair = nvlist_next_nvpair(sdd->fss, NULL); fspair; | |
1349 | fspair = nvlist_next_nvpair(sdd->fss, fspair)) { | |
1350 | nvlist_t *fslist; | |
1351 | ||
1352 | VERIFY(nvpair_value_nvlist(fspair, &fslist) == 0); | |
1353 | (void) nvlist_remove_all(fslist, "sent"); | |
1354 | } | |
1355 | ||
34dc7c2f BB |
1356 | return (0); |
1357 | } | |
1358 | ||
47dfff3b MA |
1359 | nvlist_t * |
1360 | zfs_send_resume_token_to_nvlist(libzfs_handle_t *hdl, const char *token) | |
1361 | { | |
1362 | unsigned int version; | |
1363 | int nread, i; | |
1364 | unsigned long long checksum, packed_len; | |
1365 | ||
1366 | /* | |
1367 | * Decode token header, which is: | |
1368 | * <token version>-<checksum of payload>-<uncompressed payload length> | |
1369 | * Note that the only supported token version is 1. | |
1370 | */ | |
1371 | nread = sscanf(token, "%u-%llx-%llx-", | |
1372 | &version, &checksum, &packed_len); | |
1373 | if (nread != 3) { | |
1374 | zfs_error_aux(hdl, dgettext(TEXT_DOMAIN, | |
1375 | "resume token is corrupt (invalid format)")); | |
1376 | return (NULL); | |
1377 | } | |
1378 | ||
1379 | if (version != ZFS_SEND_RESUME_TOKEN_VERSION) { | |
1380 | zfs_error_aux(hdl, dgettext(TEXT_DOMAIN, | |
1381 | "resume token is corrupt (invalid version %u)"), | |
1382 | version); | |
1383 | return (NULL); | |
1384 | } | |
1385 | ||
1386 | /* convert hexadecimal representation to binary */ | |
1387 | token = strrchr(token, '-') + 1; | |
1388 | int len = strlen(token) / 2; | |
1389 | unsigned char *compressed = zfs_alloc(hdl, len); | |
1390 | for (i = 0; i < len; i++) { | |
1391 | nread = sscanf(token + i * 2, "%2hhx", compressed + i); | |
1392 | if (nread != 1) { | |
1393 | free(compressed); | |
1394 | zfs_error_aux(hdl, dgettext(TEXT_DOMAIN, | |
1395 | "resume token is corrupt " | |
1396 | "(payload is not hex-encoded)")); | |
1397 | return (NULL); | |
1398 | } | |
1399 | } | |
1400 | ||
1401 | /* verify checksum */ | |
1402 | zio_cksum_t cksum; | |
fc897b24 | 1403 | fletcher_4_native_varsize(compressed, len, &cksum); |
47dfff3b MA |
1404 | if (cksum.zc_word[0] != checksum) { |
1405 | free(compressed); | |
1406 | zfs_error_aux(hdl, dgettext(TEXT_DOMAIN, | |
1407 | "resume token is corrupt (incorrect checksum)")); | |
1408 | return (NULL); | |
1409 | } | |
1410 | ||
1411 | /* uncompress */ | |
1412 | void *packed = zfs_alloc(hdl, packed_len); | |
1413 | uLongf packed_len_long = packed_len; | |
1414 | if (uncompress(packed, &packed_len_long, compressed, len) != Z_OK || | |
1415 | packed_len_long != packed_len) { | |
1416 | free(packed); | |
1417 | free(compressed); | |
1418 | zfs_error_aux(hdl, dgettext(TEXT_DOMAIN, | |
1419 | "resume token is corrupt (decompression failed)")); | |
1420 | return (NULL); | |
1421 | } | |
1422 | ||
1423 | /* unpack nvlist */ | |
1424 | nvlist_t *nv; | |
1425 | int error = nvlist_unpack(packed, packed_len, &nv, KM_SLEEP); | |
1426 | free(packed); | |
1427 | free(compressed); | |
1428 | if (error != 0) { | |
1429 | zfs_error_aux(hdl, dgettext(TEXT_DOMAIN, | |
1430 | "resume token is corrupt (nvlist_unpack failed)")); | |
1431 | return (NULL); | |
1432 | } | |
1433 | return (nv); | |
1434 | } | |
30af21b0 PD |
1435 | static enum lzc_send_flags |
1436 | lzc_flags_from_sendflags(const sendflags_t *flags) | |
1437 | { | |
1438 | enum lzc_send_flags lzc_flags = 0; | |
1439 | if (flags->largeblock) | |
1440 | lzc_flags |= LZC_SEND_FLAG_LARGE_BLOCK; | |
1441 | if (flags->embed_data) | |
1442 | lzc_flags |= LZC_SEND_FLAG_EMBED_DATA; | |
1443 | if (flags->compress) | |
1444 | lzc_flags |= LZC_SEND_FLAG_COMPRESS; | |
1445 | if (flags->raw) | |
1446 | lzc_flags |= LZC_SEND_FLAG_RAW; | |
ba0ba69e TC |
1447 | if (flags->saved) |
1448 | lzc_flags |= LZC_SEND_FLAG_SAVED; | |
30af21b0 PD |
1449 | return (lzc_flags); |
1450 | } | |
1451 | ||
1452 | static int | |
1453 | estimate_size(zfs_handle_t *zhp, const char *from, int fd, sendflags_t *flags, | |
1454 | uint64_t resumeobj, uint64_t resumeoff, uint64_t bytes, | |
1455 | const char *redactbook, char *errbuf) | |
1456 | { | |
1457 | uint64_t size; | |
1458 | FILE *fout = flags->dryrun ? stdout : stderr; | |
1459 | progress_arg_t pa = { 0 }; | |
1460 | int err = 0; | |
1461 | pthread_t ptid; | |
1462 | ||
1463 | if (flags->progress) { | |
1464 | pa.pa_zhp = zhp; | |
1465 | pa.pa_fd = fd; | |
1466 | pa.pa_parsable = flags->parsable; | |
1467 | pa.pa_estimate = B_TRUE; | |
1468 | pa.pa_verbosity = flags->verbosity; | |
1469 | ||
1470 | err = pthread_create(&ptid, NULL, | |
1471 | send_progress_thread, &pa); | |
1472 | if (err != 0) { | |
1473 | zfs_error_aux(zhp->zfs_hdl, strerror(errno)); | |
1474 | return (zfs_error(zhp->zfs_hdl, | |
1475 | EZFS_THREADCREATEFAILED, errbuf)); | |
1476 | } | |
1477 | } | |
1478 | ||
1479 | err = lzc_send_space_resume_redacted(zhp->zfs_name, from, | |
1480 | lzc_flags_from_sendflags(flags), resumeobj, resumeoff, bytes, | |
1481 | redactbook, fd, &size); | |
1482 | ||
1483 | if (flags->progress) { | |
1484 | void *status = NULL; | |
1485 | (void) pthread_cancel(ptid); | |
1486 | (void) pthread_join(ptid, &status); | |
1487 | int error = (int)(uintptr_t)status; | |
1488 | if (error != 0 && status != PTHREAD_CANCELED) { | |
1489 | char errbuf[1024]; | |
1490 | (void) snprintf(errbuf, sizeof (errbuf), | |
1491 | dgettext(TEXT_DOMAIN, "progress thread exited " | |
1492 | "nonzero")); | |
1493 | return (zfs_standard_error(zhp->zfs_hdl, error, | |
1494 | errbuf)); | |
1495 | } | |
1496 | } | |
1497 | ||
1498 | if (err != 0) { | |
1499 | zfs_error_aux(zhp->zfs_hdl, strerror(err)); | |
1500 | return (zfs_error(zhp->zfs_hdl, EZFS_BADBACKUP, | |
1501 | errbuf)); | |
1502 | } | |
1503 | send_print_verbose(fout, zhp->zfs_name, from, size, | |
1504 | flags->parsable); | |
1505 | ||
1506 | if (flags->parsable) { | |
1507 | (void) fprintf(fout, "size\t%llu\n", (longlong_t)size); | |
1508 | } else { | |
1509 | char buf[16]; | |
1510 | zfs_nicenum(size, buf, sizeof (buf)); | |
1511 | (void) fprintf(fout, dgettext(TEXT_DOMAIN, | |
1512 | "total estimated size is %s\n"), buf); | |
1513 | } | |
1514 | return (0); | |
1515 | } | |
1516 | ||
1517 | static boolean_t | |
1518 | redact_snaps_contains(const uint64_t *snaps, uint64_t num_snaps, uint64_t guid) | |
1519 | { | |
1520 | for (int i = 0; i < num_snaps; i++) { | |
1521 | if (snaps[i] == guid) | |
1522 | return (B_TRUE); | |
1523 | } | |
1524 | return (B_FALSE); | |
1525 | } | |
1526 | ||
1527 | static boolean_t | |
1528 | redact_snaps_equal(const uint64_t *snaps1, uint64_t num_snaps1, | |
1529 | const uint64_t *snaps2, uint64_t num_snaps2) | |
1530 | { | |
1531 | if (num_snaps1 != num_snaps2) | |
1532 | return (B_FALSE); | |
1533 | for (int i = 0; i < num_snaps1; i++) { | |
1534 | if (!redact_snaps_contains(snaps2, num_snaps2, snaps1[i])) | |
1535 | return (B_FALSE); | |
1536 | } | |
1537 | return (B_TRUE); | |
1538 | } | |
1539 | ||
1540 | /* | |
1541 | * Check that the list of redaction snapshots in the bookmark matches the send | |
1542 | * we're resuming, and return whether or not it's complete. | |
1543 | * | |
1544 | * Note that the caller needs to free the contents of *bookname with free() if | |
1545 | * this function returns successfully. | |
1546 | */ | |
1547 | static int | |
1548 | find_redact_book(libzfs_handle_t *hdl, const char *path, | |
1549 | const uint64_t *redact_snap_guids, int num_redact_snaps, | |
1550 | char **bookname) | |
1551 | { | |
1552 | char errbuf[1024]; | |
1553 | int error = 0; | |
1554 | nvlist_t *props = fnvlist_alloc(); | |
1555 | nvlist_t *bmarks; | |
1556 | ||
1557 | (void) snprintf(errbuf, sizeof (errbuf), dgettext(TEXT_DOMAIN, | |
1558 | "cannot resume send")); | |
1559 | ||
1560 | fnvlist_add_boolean(props, "redact_complete"); | |
1561 | fnvlist_add_boolean(props, zfs_prop_to_name(ZFS_PROP_REDACT_SNAPS)); | |
1562 | error = lzc_get_bookmarks(path, props, &bmarks); | |
1563 | nvlist_free(props); | |
1564 | if (error != 0) { | |
1565 | if (error == ESRCH) { | |
1566 | zfs_error_aux(hdl, dgettext(TEXT_DOMAIN, | |
1567 | "nonexistent redaction bookmark provided")); | |
1568 | } else if (error == ENOENT) { | |
1569 | zfs_error_aux(hdl, dgettext(TEXT_DOMAIN, | |
1570 | "dataset to be sent no longer exists")); | |
1571 | } else { | |
1572 | zfs_error_aux(hdl, dgettext(TEXT_DOMAIN, | |
1573 | "unknown error: %s"), strerror(error)); | |
1574 | } | |
1575 | return (zfs_error(hdl, EZFS_BADPROP, errbuf)); | |
1576 | } | |
1577 | nvpair_t *pair; | |
1578 | for (pair = nvlist_next_nvpair(bmarks, NULL); pair; | |
1579 | pair = nvlist_next_nvpair(bmarks, pair)) { | |
1580 | ||
1581 | nvlist_t *bmark = fnvpair_value_nvlist(pair); | |
1582 | nvlist_t *vallist = fnvlist_lookup_nvlist(bmark, | |
1583 | zfs_prop_to_name(ZFS_PROP_REDACT_SNAPS)); | |
1584 | uint_t len = 0; | |
1585 | uint64_t *bmarksnaps = fnvlist_lookup_uint64_array(vallist, | |
1586 | ZPROP_VALUE, &len); | |
1587 | if (redact_snaps_equal(redact_snap_guids, | |
1588 | num_redact_snaps, bmarksnaps, len)) { | |
1589 | break; | |
1590 | } | |
1591 | } | |
1592 | if (pair == NULL) { | |
1593 | fnvlist_free(bmarks); | |
1594 | zfs_error_aux(hdl, dgettext(TEXT_DOMAIN, | |
1595 | "no appropriate redaction bookmark exists")); | |
1596 | return (zfs_error(hdl, EZFS_BADPROP, errbuf)); | |
1597 | } | |
1598 | char *name = nvpair_name(pair); | |
1599 | nvlist_t *bmark = fnvpair_value_nvlist(pair); | |
1600 | nvlist_t *vallist = fnvlist_lookup_nvlist(bmark, "redact_complete"); | |
1601 | boolean_t complete = fnvlist_lookup_boolean_value(vallist, | |
1602 | ZPROP_VALUE); | |
1603 | if (!complete) { | |
1604 | fnvlist_free(bmarks); | |
1605 | zfs_error_aux(hdl, dgettext(TEXT_DOMAIN, | |
1606 | "incomplete redaction bookmark provided")); | |
1607 | return (zfs_error(hdl, EZFS_BADPROP, errbuf)); | |
1608 | } | |
1609 | *bookname = strndup(name, ZFS_MAX_DATASET_NAME_LEN); | |
1610 | ASSERT3P(*bookname, !=, NULL); | |
1611 | fnvlist_free(bmarks); | |
1612 | return (0); | |
1613 | } | |
47dfff3b | 1614 | |
ba0ba69e TC |
1615 | static int |
1616 | zfs_send_resume_impl(libzfs_handle_t *hdl, sendflags_t *flags, int outfd, | |
1617 | nvlist_t *resume_nvl) | |
47dfff3b MA |
1618 | { |
1619 | char errbuf[1024]; | |
1620 | char *toname; | |
1621 | char *fromname = NULL; | |
1622 | uint64_t resumeobj, resumeoff, toguid, fromguid, bytes; | |
1623 | zfs_handle_t *zhp; | |
1624 | int error = 0; | |
eca7b760 | 1625 | char name[ZFS_MAX_DATASET_NAME_LEN]; |
47dfff3b | 1626 | enum lzc_send_flags lzc_flags = 0; |
30af21b0 PD |
1627 | FILE *fout = (flags->verbosity > 0 && flags->dryrun) ? stdout : stderr; |
1628 | uint64_t *redact_snap_guids = NULL; | |
1629 | int num_redact_snaps = 0; | |
1630 | char *redact_book = NULL; | |
47dfff3b MA |
1631 | |
1632 | (void) snprintf(errbuf, sizeof (errbuf), dgettext(TEXT_DOMAIN, | |
1633 | "cannot resume send")); | |
1634 | ||
30af21b0 | 1635 | if (flags->verbosity != 0) { |
aee1dd4d | 1636 | (void) fprintf(fout, dgettext(TEXT_DOMAIN, |
47dfff3b | 1637 | "resume token contents:\n")); |
aee1dd4d | 1638 | nvlist_print(fout, resume_nvl); |
47dfff3b MA |
1639 | } |
1640 | ||
1641 | if (nvlist_lookup_string(resume_nvl, "toname", &toname) != 0 || | |
1642 | nvlist_lookup_uint64(resume_nvl, "object", &resumeobj) != 0 || | |
1643 | nvlist_lookup_uint64(resume_nvl, "offset", &resumeoff) != 0 || | |
1644 | nvlist_lookup_uint64(resume_nvl, "bytes", &bytes) != 0 || | |
1645 | nvlist_lookup_uint64(resume_nvl, "toguid", &toguid) != 0) { | |
1646 | zfs_error_aux(hdl, dgettext(TEXT_DOMAIN, | |
1647 | "resume token is corrupt")); | |
1648 | return (zfs_error(hdl, EZFS_FAULT, errbuf)); | |
1649 | } | |
1650 | fromguid = 0; | |
1651 | (void) nvlist_lookup_uint64(resume_nvl, "fromguid", &fromguid); | |
1652 | ||
2aa34383 DK |
1653 | if (flags->largeblock || nvlist_exists(resume_nvl, "largeblockok")) |
1654 | lzc_flags |= LZC_SEND_FLAG_LARGE_BLOCK; | |
47dfff3b MA |
1655 | if (flags->embed_data || nvlist_exists(resume_nvl, "embedok")) |
1656 | lzc_flags |= LZC_SEND_FLAG_EMBED_DATA; | |
2aa34383 DK |
1657 | if (flags->compress || nvlist_exists(resume_nvl, "compressok")) |
1658 | lzc_flags |= LZC_SEND_FLAG_COMPRESS; | |
b5256303 TC |
1659 | if (flags->raw || nvlist_exists(resume_nvl, "rawok")) |
1660 | lzc_flags |= LZC_SEND_FLAG_RAW; | |
ba0ba69e TC |
1661 | if (flags->saved || nvlist_exists(resume_nvl, "savedok")) |
1662 | lzc_flags |= LZC_SEND_FLAG_SAVED; | |
47dfff3b | 1663 | |
ba0ba69e TC |
1664 | if (flags->saved) { |
1665 | (void) strcpy(name, toname); | |
1666 | } else { | |
1667 | error = guid_to_name(hdl, toname, toguid, B_FALSE, name); | |
1668 | if (error != 0) { | |
1669 | if (zfs_dataset_exists(hdl, toname, ZFS_TYPE_DATASET)) { | |
1670 | zfs_error_aux(hdl, dgettext(TEXT_DOMAIN, | |
1671 | "'%s' is no longer the same snapshot " | |
1672 | "used in the initial send"), toname); | |
1673 | } else { | |
1674 | zfs_error_aux(hdl, dgettext(TEXT_DOMAIN, | |
1675 | "'%s' used in the initial send no " | |
1676 | "longer exists"), toname); | |
1677 | } | |
1678 | return (zfs_error(hdl, EZFS_BADPATH, errbuf)); | |
47dfff3b | 1679 | } |
47dfff3b | 1680 | } |
ba0ba69e | 1681 | |
47dfff3b MA |
1682 | zhp = zfs_open(hdl, name, ZFS_TYPE_DATASET); |
1683 | if (zhp == NULL) { | |
1684 | zfs_error_aux(hdl, dgettext(TEXT_DOMAIN, | |
1685 | "unable to access '%s'"), name); | |
1686 | return (zfs_error(hdl, EZFS_BADPATH, errbuf)); | |
1687 | } | |
1688 | ||
30af21b0 PD |
1689 | if (nvlist_lookup_uint64_array(resume_nvl, "book_redact_snaps", |
1690 | &redact_snap_guids, (uint_t *)&num_redact_snaps) != 0) { | |
1691 | num_redact_snaps = -1; | |
1692 | } | |
1693 | ||
47dfff3b | 1694 | if (fromguid != 0) { |
30af21b0 PD |
1695 | if (guid_to_name_redact_snaps(hdl, toname, fromguid, B_TRUE, |
1696 | redact_snap_guids, num_redact_snaps, name) != 0) { | |
47dfff3b MA |
1697 | zfs_error_aux(hdl, dgettext(TEXT_DOMAIN, |
1698 | "incremental source %#llx no longer exists"), | |
1699 | (longlong_t)fromguid); | |
1700 | return (zfs_error(hdl, EZFS_BADPATH, errbuf)); | |
1701 | } | |
1702 | fromname = name; | |
1703 | } | |
1704 | ||
30af21b0 PD |
1705 | redact_snap_guids = NULL; |
1706 | ||
1707 | if (nvlist_lookup_uint64_array(resume_nvl, | |
1708 | zfs_prop_to_name(ZFS_PROP_REDACT_SNAPS), &redact_snap_guids, | |
1709 | (uint_t *)&num_redact_snaps) == 0) { | |
1710 | char path[ZFS_MAX_DATASET_NAME_LEN]; | |
1711 | ||
1712 | (void) strlcpy(path, toname, sizeof (path)); | |
1713 | char *at = strchr(path, '@'); | |
1714 | ASSERT3P(at, !=, NULL); | |
1715 | ||
1716 | *at = '\0'; | |
1717 | ||
1718 | if ((error = find_redact_book(hdl, path, redact_snap_guids, | |
1719 | num_redact_snaps, &redact_book)) != 0) { | |
1720 | return (error); | |
1721 | } | |
1722 | } | |
1723 | ||
1724 | if (flags->verbosity != 0) { | |
1725 | /* | |
1726 | * Some of these may have come from the resume token, set them | |
1727 | * here for size estimate purposes. | |
1728 | */ | |
1729 | sendflags_t tmpflags = *flags; | |
1730 | if (lzc_flags & LZC_SEND_FLAG_LARGE_BLOCK) | |
1731 | tmpflags.largeblock = B_TRUE; | |
1732 | if (lzc_flags & LZC_SEND_FLAG_COMPRESS) | |
1733 | tmpflags.compress = B_TRUE; | |
1734 | if (lzc_flags & LZC_SEND_FLAG_EMBED_DATA) | |
1735 | tmpflags.embed_data = B_TRUE; | |
1736 | error = estimate_size(zhp, fromname, outfd, &tmpflags, | |
1737 | resumeobj, resumeoff, bytes, redact_book, errbuf); | |
47dfff3b MA |
1738 | } |
1739 | ||
1740 | if (!flags->dryrun) { | |
1741 | progress_arg_t pa = { 0 }; | |
1742 | pthread_t tid; | |
1743 | /* | |
1744 | * If progress reporting is requested, spawn a new thread to | |
1745 | * poll ZFS_IOC_SEND_PROGRESS at a regular interval. | |
1746 | */ | |
1747 | if (flags->progress) { | |
1748 | pa.pa_zhp = zhp; | |
1749 | pa.pa_fd = outfd; | |
1750 | pa.pa_parsable = flags->parsable; | |
30af21b0 PD |
1751 | pa.pa_estimate = B_FALSE; |
1752 | pa.pa_verbosity = flags->verbosity; | |
47dfff3b MA |
1753 | |
1754 | error = pthread_create(&tid, NULL, | |
1755 | send_progress_thread, &pa); | |
1756 | if (error != 0) { | |
30af21b0 PD |
1757 | if (redact_book != NULL) |
1758 | free(redact_book); | |
47dfff3b MA |
1759 | zfs_close(zhp); |
1760 | return (error); | |
1761 | } | |
1762 | } | |
1763 | ||
30af21b0 PD |
1764 | error = lzc_send_resume_redacted(zhp->zfs_name, fromname, outfd, |
1765 | lzc_flags, resumeobj, resumeoff, redact_book); | |
1766 | if (redact_book != NULL) | |
1767 | free(redact_book); | |
47dfff3b MA |
1768 | |
1769 | if (flags->progress) { | |
30af21b0 | 1770 | void *status = NULL; |
47dfff3b | 1771 | (void) pthread_cancel(tid); |
30af21b0 PD |
1772 | (void) pthread_join(tid, &status); |
1773 | int error = (int)(uintptr_t)status; | |
1774 | if (error != 0 && status != PTHREAD_CANCELED) { | |
1775 | char errbuf[1024]; | |
1776 | (void) snprintf(errbuf, sizeof (errbuf), | |
1777 | dgettext(TEXT_DOMAIN, | |
1778 | "progress thread exited nonzero")); | |
1779 | return (zfs_standard_error(hdl, error, errbuf)); | |
1780 | } | |
47dfff3b MA |
1781 | } |
1782 | ||
1783 | char errbuf[1024]; | |
1784 | (void) snprintf(errbuf, sizeof (errbuf), dgettext(TEXT_DOMAIN, | |
1785 | "warning: cannot send '%s'"), zhp->zfs_name); | |
1786 | ||
1787 | zfs_close(zhp); | |
1788 | ||
1789 | switch (error) { | |
1790 | case 0: | |
1791 | return (0); | |
b5256303 TC |
1792 | case EACCES: |
1793 | zfs_error_aux(hdl, dgettext(TEXT_DOMAIN, | |
1794 | "source key must be loaded")); | |
1795 | return (zfs_error(hdl, EZFS_CRYPTOFAILED, errbuf)); | |
30af21b0 PD |
1796 | case ESRCH: |
1797 | if (lzc_exists(zhp->zfs_name)) { | |
1798 | zfs_error_aux(hdl, dgettext(TEXT_DOMAIN, | |
1799 | "incremental source could not be found")); | |
1800 | } | |
1801 | return (zfs_error(hdl, EZFS_NOENT, errbuf)); | |
b5256303 | 1802 | |
47dfff3b MA |
1803 | case EXDEV: |
1804 | case ENOENT: | |
1805 | case EDQUOT: | |
1806 | case EFBIG: | |
1807 | case EIO: | |
1808 | case ENOLINK: | |
1809 | case ENOSPC: | |
1810 | case ENOSTR: | |
1811 | case ENXIO: | |
1812 | case EPIPE: | |
1813 | case ERANGE: | |
1814 | case EFAULT: | |
1815 | case EROFS: | |
1816 | zfs_error_aux(hdl, strerror(errno)); | |
1817 | return (zfs_error(hdl, EZFS_BADBACKUP, errbuf)); | |
1818 | ||
1819 | default: | |
1820 | return (zfs_standard_error(hdl, errno, errbuf)); | |
1821 | } | |
30af21b0 PD |
1822 | } else { |
1823 | if (redact_book != NULL) | |
1824 | free(redact_book); | |
47dfff3b MA |
1825 | } |
1826 | ||
47dfff3b MA |
1827 | zfs_close(zhp); |
1828 | ||
1829 | return (error); | |
1830 | } | |
1831 | ||
ba0ba69e TC |
1832 | int |
1833 | zfs_send_resume(libzfs_handle_t *hdl, sendflags_t *flags, int outfd, | |
1834 | const char *resume_token) | |
1835 | { | |
1836 | int ret; | |
1837 | char errbuf[1024]; | |
1838 | nvlist_t *resume_nvl; | |
1839 | ||
1840 | (void) snprintf(errbuf, sizeof (errbuf), dgettext(TEXT_DOMAIN, | |
1841 | "cannot resume send")); | |
1842 | ||
1843 | resume_nvl = zfs_send_resume_token_to_nvlist(hdl, resume_token); | |
1844 | if (resume_nvl == NULL) { | |
1845 | /* | |
1846 | * zfs_error_aux has already been set by | |
1847 | * zfs_send_resume_token_to_nvlist() | |
1848 | */ | |
1849 | return (zfs_error(hdl, EZFS_FAULT, errbuf)); | |
1850 | } | |
1851 | ||
1852 | ret = zfs_send_resume_impl(hdl, flags, outfd, resume_nvl); | |
1853 | nvlist_free(resume_nvl); | |
1854 | ||
1855 | return (ret); | |
1856 | } | |
1857 | ||
1858 | int | |
1859 | zfs_send_saved(zfs_handle_t *zhp, sendflags_t *flags, int outfd, | |
1860 | const char *resume_token) | |
1861 | { | |
1862 | int ret; | |
1863 | libzfs_handle_t *hdl = zhp->zfs_hdl; | |
1864 | nvlist_t *saved_nvl = NULL, *resume_nvl = NULL; | |
1865 | uint64_t saved_guid = 0, resume_guid = 0; | |
1866 | uint64_t obj = 0, off = 0, bytes = 0; | |
1867 | char token_buf[ZFS_MAXPROPLEN]; | |
1868 | char errbuf[1024]; | |
1869 | ||
1870 | (void) snprintf(errbuf, sizeof (errbuf), dgettext(TEXT_DOMAIN, | |
1871 | "saved send failed")); | |
1872 | ||
1873 | ret = zfs_prop_get(zhp, ZFS_PROP_RECEIVE_RESUME_TOKEN, | |
1874 | token_buf, sizeof (token_buf), NULL, NULL, 0, B_TRUE); | |
1875 | if (ret != 0) | |
1876 | goto out; | |
1877 | ||
1878 | saved_nvl = zfs_send_resume_token_to_nvlist(hdl, token_buf); | |
1879 | if (saved_nvl == NULL) { | |
1880 | /* | |
1881 | * zfs_error_aux has already been set by | |
1882 | * zfs_send_resume_token_to_nvlist() | |
1883 | */ | |
1884 | ret = zfs_error(hdl, EZFS_FAULT, errbuf); | |
1885 | goto out; | |
1886 | } | |
1887 | ||
1888 | /* | |
1889 | * If a resume token is provided we use the object and offset | |
1890 | * from that instead of the default, which starts from the | |
1891 | * beginning. | |
1892 | */ | |
1893 | if (resume_token != NULL) { | |
1894 | resume_nvl = zfs_send_resume_token_to_nvlist(hdl, | |
1895 | resume_token); | |
1896 | if (resume_nvl == NULL) { | |
1897 | ret = zfs_error(hdl, EZFS_FAULT, errbuf); | |
1898 | goto out; | |
1899 | } | |
1900 | ||
1901 | if (nvlist_lookup_uint64(resume_nvl, "object", &obj) != 0 || | |
1902 | nvlist_lookup_uint64(resume_nvl, "offset", &off) != 0 || | |
1903 | nvlist_lookup_uint64(resume_nvl, "bytes", &bytes) != 0 || | |
1904 | nvlist_lookup_uint64(resume_nvl, "toguid", | |
1905 | &resume_guid) != 0) { | |
1906 | zfs_error_aux(hdl, dgettext(TEXT_DOMAIN, | |
1907 | "provided resume token is corrupt")); | |
1908 | ret = zfs_error(hdl, EZFS_FAULT, errbuf); | |
1909 | goto out; | |
1910 | } | |
1911 | ||
1912 | if (nvlist_lookup_uint64(saved_nvl, "toguid", | |
1913 | &saved_guid)) { | |
1914 | zfs_error_aux(hdl, dgettext(TEXT_DOMAIN, | |
1915 | "dataset's resume token is corrupt")); | |
1916 | ret = zfs_error(hdl, EZFS_FAULT, errbuf); | |
1917 | goto out; | |
1918 | } | |
1919 | ||
1920 | if (resume_guid != saved_guid) { | |
1921 | zfs_error_aux(hdl, dgettext(TEXT_DOMAIN, | |
1922 | "provided resume token does not match dataset")); | |
1923 | ret = zfs_error(hdl, EZFS_BADBACKUP, errbuf); | |
1924 | goto out; | |
1925 | } | |
1926 | } | |
1927 | ||
1928 | (void) nvlist_remove_all(saved_nvl, "object"); | |
1929 | fnvlist_add_uint64(saved_nvl, "object", obj); | |
1930 | ||
1931 | (void) nvlist_remove_all(saved_nvl, "offset"); | |
1932 | fnvlist_add_uint64(saved_nvl, "offset", off); | |
1933 | ||
1934 | (void) nvlist_remove_all(saved_nvl, "bytes"); | |
1935 | fnvlist_add_uint64(saved_nvl, "bytes", bytes); | |
1936 | ||
1937 | (void) nvlist_remove_all(saved_nvl, "toname"); | |
1938 | fnvlist_add_string(saved_nvl, "toname", zhp->zfs_name); | |
1939 | ||
1940 | ret = zfs_send_resume_impl(hdl, flags, outfd, saved_nvl); | |
1941 | ||
1942 | out: | |
1943 | nvlist_free(saved_nvl); | |
1944 | nvlist_free(resume_nvl); | |
1945 | return (ret); | |
1946 | } | |
1947 | ||
34dc7c2f | 1948 | /* |
30af21b0 PD |
1949 | * This function informs the target system that the recursive send is complete. |
1950 | * The record is also expected in the case of a send -p. | |
1951 | */ | |
1952 | static int | |
1953 | send_conclusion_record(int fd, zio_cksum_t *zc) | |
1954 | { | |
1955 | dmu_replay_record_t drr = { 0 }; | |
1956 | drr.drr_type = DRR_END; | |
1957 | if (zc != NULL) | |
1958 | drr.drr_u.drr_end.drr_checksum = *zc; | |
1959 | if (write(fd, &drr, sizeof (drr)) == -1) { | |
1960 | return (errno); | |
1961 | } | |
1962 | return (0); | |
1963 | } | |
1964 | ||
1965 | /* | |
1966 | * This function is responsible for sending the records that contain the | |
1967 | * necessary information for the target system's libzfs to be able to set the | |
1968 | * properties of the filesystem being received, or to be able to prepare for | |
1969 | * a recursive receive. | |
1970 | * | |
1971 | * The "zhp" argument is the handle of the snapshot we are sending | |
1972 | * (the "tosnap"). The "from" argument is the short snapshot name (the part | |
1973 | * after the @) of the incremental source. | |
1974 | */ | |
1975 | static int | |
1976 | send_prelim_records(zfs_handle_t *zhp, const char *from, int fd, | |
1977 | boolean_t gather_props, boolean_t recursive, boolean_t verbose, | |
1978 | boolean_t dryrun, boolean_t raw, boolean_t replicate, boolean_t backup, | |
1979 | boolean_t holds, boolean_t props, boolean_t doall, | |
1980 | nvlist_t **fssp, avl_tree_t **fsavlp) | |
1981 | { | |
1982 | int err = 0; | |
1983 | char *packbuf = NULL; | |
1984 | size_t buflen = 0; | |
1985 | zio_cksum_t zc = { {0} }; | |
1986 | int featureflags = 0; | |
1987 | /* name of filesystem/volume that contains snapshot we are sending */ | |
1988 | char tofs[ZFS_MAX_DATASET_NAME_LEN]; | |
1989 | /* short name of snap we are sending */ | |
1990 | char *tosnap = ""; | |
1991 | ||
1992 | char errbuf[1024]; | |
1993 | (void) snprintf(errbuf, sizeof (errbuf), dgettext(TEXT_DOMAIN, | |
1994 | "warning: cannot send '%s'"), zhp->zfs_name); | |
1995 | if (zhp->zfs_type == ZFS_TYPE_FILESYSTEM && zfs_prop_get_int(zhp, | |
1996 | ZFS_PROP_VERSION) >= ZPL_VERSION_SA) { | |
1997 | featureflags |= DMU_BACKUP_FEATURE_SA_SPILL; | |
1998 | } | |
1999 | ||
2000 | if (holds) | |
2001 | featureflags |= DMU_BACKUP_FEATURE_HOLDS; | |
2002 | ||
2003 | (void) strlcpy(tofs, zhp->zfs_name, ZFS_MAX_DATASET_NAME_LEN); | |
2004 | char *at = strchr(tofs, '@'); | |
2005 | if (at != NULL) { | |
2006 | *at = '\0'; | |
2007 | tosnap = at + 1; | |
2008 | } | |
2009 | ||
2010 | if (gather_props) { | |
2011 | nvlist_t *hdrnv = fnvlist_alloc(); | |
2012 | nvlist_t *fss = NULL; | |
2013 | ||
2014 | if (from != NULL) | |
2015 | fnvlist_add_string(hdrnv, "fromsnap", from); | |
2016 | fnvlist_add_string(hdrnv, "tosnap", tosnap); | |
2017 | if (!recursive) | |
2018 | fnvlist_add_boolean(hdrnv, "not_recursive"); | |
2019 | ||
2020 | if (raw) { | |
2021 | VERIFY0(nvlist_add_boolean(hdrnv, "raw")); | |
2022 | } | |
2023 | ||
2024 | if ((err = gather_nvlist(zhp->zfs_hdl, tofs, | |
2025 | from, tosnap, recursive, raw, doall, replicate, verbose, | |
2026 | backup, holds, props, &fss, fsavlp)) != 0) { | |
2027 | return (zfs_error(zhp->zfs_hdl, EZFS_BADBACKUP, | |
2028 | errbuf)); | |
2029 | } | |
7a6c12fd AJ |
2030 | /* |
2031 | * Do not allow the size of the properties list to exceed | |
2032 | * the limit | |
2033 | */ | |
2034 | if ((fnvlist_size(fss) + fnvlist_size(hdrnv)) > | |
2035 | zhp->zfs_hdl->libzfs_max_nvlist) { | |
2036 | (void) snprintf(errbuf, sizeof (errbuf), | |
2037 | dgettext(TEXT_DOMAIN, "warning: cannot send '%s': " | |
2038 | "the size of the list of snapshots and properties " | |
2039 | "is too large to be received successfully.\n" | |
2040 | "Select a smaller number of snapshots to send.\n"), | |
2041 | zhp->zfs_name); | |
2042 | return (zfs_error(zhp->zfs_hdl, EZFS_NOSPC, | |
2043 | errbuf)); | |
2044 | } | |
30af21b0 PD |
2045 | fnvlist_add_nvlist(hdrnv, "fss", fss); |
2046 | VERIFY0(nvlist_pack(hdrnv, &packbuf, &buflen, NV_ENCODE_XDR, | |
2047 | 0)); | |
2048 | if (fssp != NULL) { | |
2049 | *fssp = fss; | |
2050 | } else { | |
2051 | nvlist_free(fss); | |
2052 | } | |
2053 | nvlist_free(hdrnv); | |
2054 | } | |
2055 | ||
2056 | if (!dryrun) { | |
2057 | dmu_replay_record_t drr = { 0 }; | |
2058 | /* write first begin record */ | |
2059 | drr.drr_type = DRR_BEGIN; | |
2060 | drr.drr_u.drr_begin.drr_magic = DMU_BACKUP_MAGIC; | |
2061 | DMU_SET_STREAM_HDRTYPE(drr.drr_u.drr_begin. | |
2062 | drr_versioninfo, DMU_COMPOUNDSTREAM); | |
2063 | DMU_SET_FEATUREFLAGS(drr.drr_u.drr_begin. | |
2064 | drr_versioninfo, featureflags); | |
2065 | if (snprintf(drr.drr_u.drr_begin.drr_toname, | |
2066 | sizeof (drr.drr_u.drr_begin.drr_toname), "%s@%s", tofs, | |
2067 | tosnap) >= sizeof (drr.drr_u.drr_begin.drr_toname)) { | |
2068 | return (zfs_error(zhp->zfs_hdl, EZFS_BADBACKUP, | |
2069 | errbuf)); | |
2070 | } | |
2071 | drr.drr_payloadlen = buflen; | |
2072 | ||
2073 | err = dump_record(&drr, packbuf, buflen, &zc, fd); | |
2074 | free(packbuf); | |
2075 | if (err != 0) { | |
2076 | zfs_error_aux(zhp->zfs_hdl, strerror(err)); | |
2077 | return (zfs_error(zhp->zfs_hdl, EZFS_BADBACKUP, | |
2078 | errbuf)); | |
2079 | } | |
2080 | err = send_conclusion_record(fd, &zc); | |
2081 | if (err != 0) { | |
2082 | zfs_error_aux(zhp->zfs_hdl, strerror(err)); | |
2083 | return (zfs_error(zhp->zfs_hdl, EZFS_BADBACKUP, | |
2084 | errbuf)); | |
2085 | } | |
2086 | } | |
2087 | return (0); | |
2088 | } | |
2089 | ||
2090 | /* | |
2091 | * Generate a send stream. The "zhp" argument is the filesystem/volume | |
2092 | * that contains the snapshot to send. The "fromsnap" argument is the | |
2093 | * short name (the part after the '@') of the snapshot that is the | |
2094 | * incremental source to send from (if non-NULL). The "tosnap" argument | |
2095 | * is the short name of the snapshot to send. | |
45d1cae3 BB |
2096 | * |
2097 | * The content of the send stream is the snapshot identified by | |
2098 | * 'tosnap'. Incremental streams are requested in two ways: | |
2099 | * - from the snapshot identified by "fromsnap" (if non-null) or | |
2100 | * - from the origin of the dataset identified by zhp, which must | |
2101 | * be a clone. In this case, "fromsnap" is null and "fromorigin" | |
2102 | * is TRUE. | |
2103 | * | |
2104 | * The send stream is recursive (i.e. dumps a hierarchy of snapshots) and | |
428870ff | 2105 | * uses a special header (with a hdrtype field of DMU_COMPOUNDSTREAM) |
45d1cae3 | 2106 | * if "replicate" is set. If "doall" is set, dump all the intermediate |
428870ff BB |
2107 | * snapshots. The DMU_COMPOUNDSTREAM header is used in the "doall" |
2108 | * case too. If "props" is set, send properties. | |
34dc7c2f BB |
2109 | */ |
2110 | int | |
2111 | zfs_send(zfs_handle_t *zhp, const char *fromsnap, const char *tosnap, | |
330d06f9 | 2112 | sendflags_t *flags, int outfd, snapfilter_cb_t filter_func, |
428870ff | 2113 | void *cb_arg, nvlist_t **debugnvp) |
34dc7c2f BB |
2114 | { |
2115 | char errbuf[1024]; | |
2116 | send_dump_data_t sdd = { 0 }; | |
330d06f9 | 2117 | int err = 0; |
34dc7c2f BB |
2118 | nvlist_t *fss = NULL; |
2119 | avl_tree_t *fsavl = NULL; | |
428870ff BB |
2120 | static uint64_t holdseq; |
2121 | int spa_version; | |
95fd54a1 | 2122 | pthread_t tid = 0; |
428870ff | 2123 | int pipefd[2]; |
428870ff | 2124 | int featureflags = 0; |
93f6d7e2 | 2125 | FILE *fout; |
428870ff | 2126 | |
34dc7c2f BB |
2127 | (void) snprintf(errbuf, sizeof (errbuf), dgettext(TEXT_DOMAIN, |
2128 | "cannot send '%s'"), zhp->zfs_name); | |
2129 | ||
2130 | if (fromsnap && fromsnap[0] == '\0') { | |
2131 | zfs_error_aux(zhp->zfs_hdl, dgettext(TEXT_DOMAIN, | |
2132 | "zero-length incremental source")); | |
2133 | return (zfs_error(zhp->zfs_hdl, EZFS_NOENT, errbuf)); | |
2134 | } | |
2135 | ||
572e2857 BB |
2136 | if (zhp->zfs_type == ZFS_TYPE_FILESYSTEM) { |
2137 | uint64_t version; | |
2138 | version = zfs_prop_get_int(zhp, ZFS_PROP_VERSION); | |
2139 | if (version >= ZPL_VERSION_SA) { | |
2140 | featureflags |= DMU_BACKUP_FEATURE_SA_SPILL; | |
2141 | } | |
2142 | } | |
2143 | ||
9c5e88b1 PZ |
2144 | if (flags->holds) |
2145 | featureflags |= DMU_BACKUP_FEATURE_HOLDS; | |
2146 | ||
9c5e88b1 PZ |
2147 | if (flags->replicate || flags->doall || flags->props || |
2148 | flags->holds || flags->backup) { | |
30af21b0 PD |
2149 | char full_tosnap_name[ZFS_MAX_DATASET_NAME_LEN]; |
2150 | if (snprintf(full_tosnap_name, sizeof (full_tosnap_name), | |
2151 | "%s@%s", zhp->zfs_name, tosnap) >= | |
2152 | sizeof (full_tosnap_name)) { | |
2153 | err = EINVAL; | |
2154 | goto stderr_out; | |
34dc7c2f | 2155 | } |
30af21b0 PD |
2156 | zfs_handle_t *tosnap = zfs_open(zhp->zfs_hdl, |
2157 | full_tosnap_name, ZFS_TYPE_SNAPSHOT); | |
1d20b763 | 2158 | if (tosnap == NULL) { |
2159 | err = -1; | |
2160 | goto err_out; | |
2161 | } | |
30af21b0 PD |
2162 | err = send_prelim_records(tosnap, fromsnap, outfd, |
2163 | flags->replicate || flags->props || flags->holds, | |
2164 | flags->replicate, flags->verbosity > 0, flags->dryrun, | |
2165 | flags->raw, flags->replicate, flags->backup, flags->holds, | |
2166 | flags->props, flags->doall, &fss, &fsavl); | |
2167 | zfs_close(tosnap); | |
2168 | if (err != 0) | |
2169 | goto err_out; | |
34dc7c2f BB |
2170 | } |
2171 | ||
2172 | /* dump each stream */ | |
2173 | sdd.fromsnap = fromsnap; | |
2174 | sdd.tosnap = tosnap; | |
95fd54a1 | 2175 | if (tid != 0) |
428870ff BB |
2176 | sdd.outfd = pipefd[0]; |
2177 | else | |
2178 | sdd.outfd = outfd; | |
330d06f9 MA |
2179 | sdd.replicate = flags->replicate; |
2180 | sdd.doall = flags->doall; | |
2181 | sdd.fromorigin = flags->fromorigin; | |
34dc7c2f BB |
2182 | sdd.fss = fss; |
2183 | sdd.fsavl = fsavl; | |
30af21b0 | 2184 | sdd.verbosity = flags->verbosity; |
330d06f9 | 2185 | sdd.parsable = flags->parsable; |
37abac6d | 2186 | sdd.progress = flags->progress; |
330d06f9 | 2187 | sdd.dryrun = flags->dryrun; |
f1512ee6 | 2188 | sdd.large_block = flags->largeblock; |
9b67f605 | 2189 | sdd.embed_data = flags->embed_data; |
2aa34383 | 2190 | sdd.compress = flags->compress; |
b5256303 | 2191 | sdd.raw = flags->raw; |
9c5e88b1 | 2192 | sdd.holds = flags->holds; |
428870ff BB |
2193 | sdd.filter_cb = filter_func; |
2194 | sdd.filter_cb_arg = cb_arg; | |
2195 | if (debugnvp) | |
2196 | sdd.debugnv = *debugnvp; | |
30af21b0 | 2197 | if (sdd.verbosity != 0 && sdd.dryrun) |
93f6d7e2 MJ |
2198 | sdd.std_out = B_TRUE; |
2199 | fout = sdd.std_out ? stdout : stderr; | |
e956d651 CS |
2200 | |
2201 | /* | |
2202 | * Some flags require that we place user holds on the datasets that are | |
2203 | * being sent so they don't get destroyed during the send. We can skip | |
2204 | * this step if the pool is imported read-only since the datasets cannot | |
2205 | * be destroyed. | |
2206 | */ | |
2207 | if (!flags->dryrun && !zpool_get_prop_int(zfs_get_pool_handle(zhp), | |
2208 | ZPOOL_PROP_READONLY, NULL) && | |
2209 | zfs_spa_version(zhp, &spa_version) == 0 && | |
2210 | spa_version >= SPA_VERSION_USERREFS && | |
2211 | (flags->doall || flags->replicate)) { | |
572e2857 BB |
2212 | ++holdseq; |
2213 | (void) snprintf(sdd.holdtag, sizeof (sdd.holdtag), | |
2214 | ".send-%d-%llu", getpid(), (u_longlong_t)holdseq); | |
d32eff3a | 2215 | sdd.cleanup_fd = open(ZFS_DEV, O_RDWR); |
572e2857 BB |
2216 | if (sdd.cleanup_fd < 0) { |
2217 | err = errno; | |
2218 | goto stderr_out; | |
2219 | } | |
95fd54a1 | 2220 | sdd.snapholds = fnvlist_alloc(); |
572e2857 BB |
2221 | } else { |
2222 | sdd.cleanup_fd = -1; | |
95fd54a1 | 2223 | sdd.snapholds = NULL; |
572e2857 | 2224 | } |
9c5e88b1 | 2225 | |
30af21b0 | 2226 | if (flags->verbosity != 0 || sdd.snapholds != NULL) { |
330d06f9 MA |
2227 | /* |
2228 | * Do a verbose no-op dry run to get all the verbose output | |
95fd54a1 SH |
2229 | * or to gather snapshot hold's before generating any data, |
2230 | * then do a non-verbose real run to generate the streams. | |
330d06f9 MA |
2231 | */ |
2232 | sdd.dryrun = B_TRUE; | |
2233 | err = dump_filesystems(zhp, &sdd); | |
95fd54a1 SH |
2234 | |
2235 | if (err != 0) | |
2236 | goto stderr_out; | |
2237 | ||
30af21b0 | 2238 | if (flags->verbosity != 0) { |
95fd54a1 | 2239 | if (flags->parsable) { |
93f6d7e2 | 2240 | (void) fprintf(fout, "size\t%llu\n", |
95fd54a1 SH |
2241 | (longlong_t)sdd.size); |
2242 | } else { | |
2243 | char buf[16]; | |
e7fbeb60 | 2244 | zfs_nicebytes(sdd.size, buf, sizeof (buf)); |
93f6d7e2 | 2245 | (void) fprintf(fout, dgettext(TEXT_DOMAIN, |
95fd54a1 SH |
2246 | "total estimated size is %s\n"), buf); |
2247 | } | |
330d06f9 | 2248 | } |
95fd54a1 SH |
2249 | |
2250 | /* Ensure no snaps found is treated as an error. */ | |
2251 | if (!sdd.seento) { | |
2252 | err = ENOENT; | |
2253 | goto err_out; | |
2254 | } | |
2255 | ||
2256 | /* Skip the second run if dryrun was requested. */ | |
2257 | if (flags->dryrun) | |
2258 | goto err_out; | |
2259 | ||
2260 | if (sdd.snapholds != NULL) { | |
2261 | err = zfs_hold_nvl(zhp, sdd.cleanup_fd, sdd.snapholds); | |
2262 | if (err != 0) | |
2263 | goto stderr_out; | |
2264 | ||
2265 | fnvlist_free(sdd.snapholds); | |
2266 | sdd.snapholds = NULL; | |
2267 | } | |
2268 | ||
2269 | sdd.dryrun = B_FALSE; | |
30af21b0 | 2270 | sdd.verbosity = 0; |
330d06f9 | 2271 | } |
95fd54a1 | 2272 | |
34dc7c2f BB |
2273 | err = dump_filesystems(zhp, &sdd); |
2274 | fsavl_destroy(fsavl); | |
2275 | nvlist_free(fss); | |
2276 | ||
95fd54a1 SH |
2277 | /* Ensure no snaps found is treated as an error. */ |
2278 | if (err == 0 && !sdd.seento) | |
2279 | err = ENOENT; | |
2280 | ||
2281 | if (tid != 0) { | |
2282 | if (err != 0) | |
2283 | (void) pthread_cancel(tid); | |
95fd54a1 | 2284 | (void) close(pipefd[0]); |
6389d422 | 2285 | (void) pthread_join(tid, NULL); |
428870ff BB |
2286 | } |
2287 | ||
572e2857 BB |
2288 | if (sdd.cleanup_fd != -1) { |
2289 | VERIFY(0 == close(sdd.cleanup_fd)); | |
2290 | sdd.cleanup_fd = -1; | |
2291 | } | |
2292 | ||
330d06f9 | 2293 | if (!flags->dryrun && (flags->replicate || flags->doall || |
9c5e88b1 | 2294 | flags->props || flags->backup || flags->holds)) { |
34dc7c2f BB |
2295 | /* |
2296 | * write final end record. NB: want to do this even if | |
2297 | * there was some error, because it might not be totally | |
2298 | * failed. | |
2299 | */ | |
30af21b0 PD |
2300 | err = send_conclusion_record(outfd, NULL); |
2301 | if (err != 0) | |
2302 | return (zfs_standard_error(zhp->zfs_hdl, err, errbuf)); | |
34dc7c2f BB |
2303 | } |
2304 | ||
2305 | return (err || sdd.err); | |
428870ff BB |
2306 | |
2307 | stderr_out: | |
2308 | err = zfs_standard_error(zhp->zfs_hdl, err, errbuf); | |
2309 | err_out: | |
95fd54a1 SH |
2310 | fsavl_destroy(fsavl); |
2311 | nvlist_free(fss); | |
2312 | fnvlist_free(sdd.snapholds); | |
2313 | ||
572e2857 BB |
2314 | if (sdd.cleanup_fd != -1) |
2315 | VERIFY(0 == close(sdd.cleanup_fd)); | |
95fd54a1 | 2316 | if (tid != 0) { |
428870ff | 2317 | (void) pthread_cancel(tid); |
428870ff | 2318 | (void) close(pipefd[0]); |
6389d422 | 2319 | (void) pthread_join(tid, NULL); |
428870ff BB |
2320 | } |
2321 | return (err); | |
34dc7c2f BB |
2322 | } |
2323 | ||
65c7cc49 | 2324 | static zfs_handle_t * |
30af21b0 PD |
2325 | name_to_dir_handle(libzfs_handle_t *hdl, const char *snapname) |
2326 | { | |
2327 | char dirname[ZFS_MAX_DATASET_NAME_LEN]; | |
2328 | (void) strlcpy(dirname, snapname, ZFS_MAX_DATASET_NAME_LEN); | |
2329 | char *c = strchr(dirname, '@'); | |
2330 | if (c != NULL) | |
2331 | *c = '\0'; | |
2332 | return (zfs_open(hdl, dirname, ZFS_TYPE_DATASET)); | |
2333 | } | |
2334 | ||
2335 | /* | |
2336 | * Returns B_TRUE if earlier is an earlier snapshot in later's timeline; either | |
2337 | * an earlier snapshot in the same filesystem, or a snapshot before later's | |
2338 | * origin, or it's origin's origin, etc. | |
2339 | */ | |
2340 | static boolean_t | |
2341 | snapshot_is_before(zfs_handle_t *earlier, zfs_handle_t *later) | |
2342 | { | |
2343 | boolean_t ret; | |
2344 | uint64_t later_txg = | |
2345 | (later->zfs_type == ZFS_TYPE_FILESYSTEM || | |
2346 | later->zfs_type == ZFS_TYPE_VOLUME ? | |
2347 | UINT64_MAX : zfs_prop_get_int(later, ZFS_PROP_CREATETXG)); | |
2348 | uint64_t earlier_txg = zfs_prop_get_int(earlier, ZFS_PROP_CREATETXG); | |
2349 | ||
2350 | if (earlier_txg >= later_txg) | |
2351 | return (B_FALSE); | |
2352 | ||
2353 | zfs_handle_t *earlier_dir = name_to_dir_handle(earlier->zfs_hdl, | |
2354 | earlier->zfs_name); | |
2355 | zfs_handle_t *later_dir = name_to_dir_handle(later->zfs_hdl, | |
2356 | later->zfs_name); | |
2357 | ||
2358 | if (strcmp(earlier_dir->zfs_name, later_dir->zfs_name) == 0) { | |
2359 | zfs_close(earlier_dir); | |
2360 | zfs_close(later_dir); | |
2361 | return (B_TRUE); | |
2362 | } | |
2363 | ||
2364 | char clonename[ZFS_MAX_DATASET_NAME_LEN]; | |
2365 | if (zfs_prop_get(later_dir, ZFS_PROP_ORIGIN, clonename, | |
2366 | ZFS_MAX_DATASET_NAME_LEN, NULL, NULL, 0, B_TRUE) != 0) { | |
2367 | zfs_close(earlier_dir); | |
2368 | zfs_close(later_dir); | |
2369 | return (B_FALSE); | |
2370 | } | |
2371 | ||
2372 | zfs_handle_t *origin = zfs_open(earlier->zfs_hdl, clonename, | |
2373 | ZFS_TYPE_DATASET); | |
2374 | uint64_t origin_txg = zfs_prop_get_int(origin, ZFS_PROP_CREATETXG); | |
2375 | ||
2376 | /* | |
2377 | * If "earlier" is exactly the origin, then | |
2378 | * snapshot_is_before(earlier, origin) will return false (because | |
2379 | * they're the same). | |
2380 | */ | |
2381 | if (origin_txg == earlier_txg && | |
2382 | strcmp(origin->zfs_name, earlier->zfs_name) == 0) { | |
2383 | zfs_close(earlier_dir); | |
2384 | zfs_close(later_dir); | |
2385 | zfs_close(origin); | |
2386 | return (B_TRUE); | |
2387 | } | |
2388 | zfs_close(earlier_dir); | |
2389 | zfs_close(later_dir); | |
2390 | ||
2391 | ret = snapshot_is_before(earlier, origin); | |
2392 | zfs_close(origin); | |
2393 | return (ret); | |
2394 | } | |
2395 | ||
2396 | /* | |
2397 | * The "zhp" argument is the handle of the dataset to send (typically a | |
2398 | * snapshot). The "from" argument is the full name of the snapshot or | |
2399 | * bookmark that is the incremental source. | |
2400 | */ | |
da536844 | 2401 | int |
30af21b0 PD |
2402 | zfs_send_one(zfs_handle_t *zhp, const char *from, int fd, sendflags_t *flags, |
2403 | const char *redactbook) | |
da536844 | 2404 | { |
30af21b0 | 2405 | int err; |
da536844 | 2406 | libzfs_handle_t *hdl = zhp->zfs_hdl; |
22df2457 | 2407 | char *name = zhp->zfs_name; |
30af21b0 | 2408 | int orig_fd = fd; |
196bee4c | 2409 | pthread_t ptid; |
30af21b0 | 2410 | progress_arg_t pa = { 0 }; |
30af21b0 | 2411 | |
da536844 | 2412 | char errbuf[1024]; |
30af21b0 | 2413 | (void) snprintf(errbuf, sizeof (errbuf), dgettext(TEXT_DOMAIN, |
22df2457 | 2414 | "warning: cannot send '%s'"), name); |
835db585 | 2415 | |
30af21b0 PD |
2416 | if (from != NULL && strchr(from, '@')) { |
2417 | zfs_handle_t *from_zhp = zfs_open(hdl, from, | |
2418 | ZFS_TYPE_DATASET); | |
1d20b763 | 2419 | if (from_zhp == NULL) |
2420 | return (-1); | |
30af21b0 PD |
2421 | if (!snapshot_is_before(from_zhp, zhp)) { |
2422 | zfs_close(from_zhp); | |
2423 | zfs_error_aux(hdl, dgettext(TEXT_DOMAIN, | |
2424 | "not an earlier snapshot from the same fs")); | |
2425 | return (zfs_error(hdl, EZFS_CROSSTARGET, errbuf)); | |
2426 | } | |
2427 | zfs_close(from_zhp); | |
2428 | } | |
835db585 | 2429 | |
22df2457 RM |
2430 | if (redactbook != NULL) { |
2431 | char bookname[ZFS_MAX_DATASET_NAME_LEN]; | |
2432 | nvlist_t *redact_snaps; | |
2433 | zfs_handle_t *book_zhp; | |
2434 | char *at, *pound; | |
2435 | int dsnamelen; | |
2436 | ||
2437 | pound = strchr(redactbook, '#'); | |
2438 | if (pound != NULL) | |
2439 | redactbook = pound + 1; | |
2440 | at = strchr(name, '@'); | |
2441 | if (at == NULL) { | |
2442 | zfs_error_aux(hdl, dgettext(TEXT_DOMAIN, | |
2443 | "cannot do a redacted send to a filesystem")); | |
2444 | return (zfs_error(hdl, EZFS_BADTYPE, errbuf)); | |
2445 | } | |
2446 | dsnamelen = at - name; | |
2447 | if (snprintf(bookname, sizeof (bookname), "%.*s#%s", | |
2448 | dsnamelen, name, redactbook) | |
2449 | >= sizeof (bookname)) { | |
2450 | zfs_error_aux(hdl, dgettext(TEXT_DOMAIN, | |
2451 | "invalid bookmark name")); | |
2452 | return (zfs_error(hdl, EZFS_INVALIDNAME, errbuf)); | |
2453 | } | |
2454 | book_zhp = zfs_open(hdl, bookname, ZFS_TYPE_BOOKMARK); | |
2455 | if (book_zhp == NULL) | |
2456 | return (-1); | |
2457 | if (nvlist_lookup_nvlist(book_zhp->zfs_props, | |
2458 | zfs_prop_to_name(ZFS_PROP_REDACT_SNAPS), | |
2459 | &redact_snaps) != 0 || redact_snaps == NULL) { | |
2460 | zfs_close(book_zhp); | |
2461 | zfs_error_aux(hdl, dgettext(TEXT_DOMAIN, | |
2462 | "not a redaction bookmark")); | |
2463 | return (zfs_error(hdl, EZFS_BADTYPE, errbuf)); | |
2464 | } | |
2465 | zfs_close(book_zhp); | |
2466 | } | |
2467 | ||
30af21b0 PD |
2468 | /* |
2469 | * Send fs properties | |
2470 | */ | |
2471 | if (flags->props || flags->holds || flags->backup) { | |
2472 | /* | |
2473 | * Note: the header generated by send_prelim_records() | |
2474 | * assumes that the incremental source is in the same | |
2475 | * filesystem/volume as the target (which is a requirement | |
2476 | * when doing "zfs send -R"). But that isn't always the | |
2477 | * case here (e.g. send from snap in origin, or send from | |
2478 | * bookmark). We pass from=NULL, which will omit this | |
2479 | * information from the prelim records; it isn't used | |
2480 | * when receiving this type of stream. | |
2481 | */ | |
2482 | err = send_prelim_records(zhp, NULL, fd, B_TRUE, B_FALSE, | |
2483 | flags->verbosity > 0, flags->dryrun, flags->raw, | |
2484 | flags->replicate, flags->backup, flags->holds, | |
2485 | flags->props, flags->doall, NULL, NULL); | |
2486 | if (err != 0) | |
2487 | return (err); | |
2488 | } | |
2489 | ||
2490 | /* | |
2491 | * Perform size estimate if verbose was specified. | |
2492 | */ | |
2493 | if (flags->verbosity != 0) { | |
2494 | err = estimate_size(zhp, from, fd, flags, 0, 0, 0, redactbook, | |
2495 | errbuf); | |
2496 | if (err != 0) | |
2497 | return (err); | |
2498 | } | |
2499 | ||
2500 | if (flags->dryrun) | |
2501 | return (0); | |
2502 | ||
30af21b0 PD |
2503 | /* |
2504 | * If progress reporting is requested, spawn a new thread to poll | |
2505 | * ZFS_IOC_SEND_PROGRESS at a regular interval. | |
2506 | */ | |
2507 | if (flags->progress) { | |
2508 | pa.pa_zhp = zhp; | |
2509 | pa.pa_fd = fd; | |
2510 | pa.pa_parsable = flags->parsable; | |
2511 | pa.pa_estimate = B_FALSE; | |
2512 | pa.pa_verbosity = flags->verbosity; | |
2513 | ||
2514 | err = pthread_create(&ptid, NULL, | |
2515 | send_progress_thread, &pa); | |
2516 | if (err != 0) { | |
2517 | zfs_error_aux(zhp->zfs_hdl, strerror(errno)); | |
30af21b0 PD |
2518 | return (zfs_error(zhp->zfs_hdl, |
2519 | EZFS_THREADCREATEFAILED, errbuf)); | |
835db585 | 2520 | } |
2521 | } | |
2522 | ||
22df2457 | 2523 | err = lzc_send_redacted(name, from, fd, |
30af21b0 | 2524 | lzc_flags_from_sendflags(flags), redactbook); |
835db585 | 2525 | |
30af21b0 PD |
2526 | if (flags->progress) { |
2527 | void *status = NULL; | |
2528 | if (err != 0) | |
2529 | (void) pthread_cancel(ptid); | |
2530 | (void) pthread_join(ptid, &status); | |
2531 | int error = (int)(uintptr_t)status; | |
2532 | if (error != 0 && status != PTHREAD_CANCELED) { | |
2533 | char errbuf[1024]; | |
2534 | (void) snprintf(errbuf, sizeof (errbuf), | |
2535 | dgettext(TEXT_DOMAIN, "progress thread exited " | |
2536 | "nonzero")); | |
2537 | return (zfs_standard_error(hdl, error, errbuf)); | |
2538 | } | |
2539 | } | |
da536844 | 2540 | |
30af21b0 PD |
2541 | if (flags->props || flags->holds || flags->backup) { |
2542 | /* Write the final end record. */ | |
2543 | err = send_conclusion_record(orig_fd, NULL); | |
2544 | if (err != 0) | |
2545 | return (zfs_standard_error(hdl, err, errbuf)); | |
2546 | } | |
da536844 MA |
2547 | if (err != 0) { |
2548 | switch (errno) { | |
2549 | case EXDEV: | |
2550 | zfs_error_aux(hdl, dgettext(TEXT_DOMAIN, | |
2551 | "not an earlier snapshot from the same fs")); | |
2552 | return (zfs_error(hdl, EZFS_CROSSTARGET, errbuf)); | |
2553 | ||
2554 | case ENOENT: | |
2555 | case ESRCH: | |
22df2457 | 2556 | if (lzc_exists(name)) { |
da536844 MA |
2557 | zfs_error_aux(hdl, dgettext(TEXT_DOMAIN, |
2558 | "incremental source (%s) does not exist"), | |
2559 | from); | |
2560 | } | |
2561 | return (zfs_error(hdl, EZFS_NOENT, errbuf)); | |
2562 | ||
b5256303 TC |
2563 | case EACCES: |
2564 | zfs_error_aux(hdl, dgettext(TEXT_DOMAIN, | |
2565 | "dataset key must be loaded")); | |
2566 | return (zfs_error(hdl, EZFS_CRYPTOFAILED, errbuf)); | |
2567 | ||
da536844 MA |
2568 | case EBUSY: |
2569 | zfs_error_aux(hdl, dgettext(TEXT_DOMAIN, | |
2570 | "target is busy; if a filesystem, " | |
2571 | "it must not be mounted")); | |
2572 | return (zfs_error(hdl, EZFS_BUSY, errbuf)); | |
2573 | ||
2574 | case EDQUOT: | |
22df2457 | 2575 | case EFAULT: |
da536844 | 2576 | case EFBIG: |
22df2457 | 2577 | case EINVAL: |
da536844 MA |
2578 | case EIO: |
2579 | case ENOLINK: | |
2580 | case ENOSPC: | |
2581 | case ENOSTR: | |
2582 | case ENXIO: | |
2583 | case EPIPE: | |
2584 | case ERANGE: | |
da536844 MA |
2585 | case EROFS: |
2586 | zfs_error_aux(hdl, strerror(errno)); | |
2587 | return (zfs_error(hdl, EZFS_BADBACKUP, errbuf)); | |
2588 | ||
2589 | default: | |
2590 | return (zfs_standard_error(hdl, errno, errbuf)); | |
2591 | } | |
2592 | } | |
2593 | return (err != 0); | |
2594 | } | |
2595 | ||
34dc7c2f BB |
2596 | /* |
2597 | * Routines specific to "zfs recv" | |
2598 | */ | |
2599 | ||
2600 | static int | |
2601 | recv_read(libzfs_handle_t *hdl, int fd, void *buf, int ilen, | |
2602 | boolean_t byteswap, zio_cksum_t *zc) | |
2603 | { | |
2604 | char *cp = buf; | |
2605 | int rv; | |
2606 | int len = ilen; | |
2607 | ||
2608 | do { | |
2609 | rv = read(fd, cp, len); | |
2610 | cp += rv; | |
2611 | len -= rv; | |
2612 | } while (rv > 0); | |
2613 | ||
2614 | if (rv < 0 || len != 0) { | |
2615 | zfs_error_aux(hdl, dgettext(TEXT_DOMAIN, | |
2616 | "failed to read from stream")); | |
2617 | return (zfs_error(hdl, EZFS_BADSTREAM, dgettext(TEXT_DOMAIN, | |
2618 | "cannot receive"))); | |
2619 | } | |
2620 | ||
2621 | if (zc) { | |
2622 | if (byteswap) | |
2623 | fletcher_4_incremental_byteswap(buf, ilen, zc); | |
2624 | else | |
2625 | fletcher_4_incremental_native(buf, ilen, zc); | |
2626 | } | |
2627 | return (0); | |
2628 | } | |
2629 | ||
2630 | static int | |
2631 | recv_read_nvlist(libzfs_handle_t *hdl, int fd, int len, nvlist_t **nvp, | |
2632 | boolean_t byteswap, zio_cksum_t *zc) | |
2633 | { | |
2634 | char *buf; | |
2635 | int err; | |
2636 | ||
2637 | buf = zfs_alloc(hdl, len); | |
2638 | if (buf == NULL) | |
2639 | return (ENOMEM); | |
2640 | ||
7a6c12fd AJ |
2641 | if (len > hdl->libzfs_max_nvlist) { |
2642 | zfs_error_aux(hdl, dgettext(TEXT_DOMAIN, "nvlist too large")); | |
908d43d0 | 2643 | free(buf); |
7a6c12fd AJ |
2644 | return (ENOMEM); |
2645 | } | |
2646 | ||
34dc7c2f BB |
2647 | err = recv_read(hdl, fd, buf, len, byteswap, zc); |
2648 | if (err != 0) { | |
2649 | free(buf); | |
2650 | return (err); | |
2651 | } | |
2652 | ||
2653 | err = nvlist_unpack(buf, len, nvp, 0); | |
2654 | free(buf); | |
2655 | if (err != 0) { | |
2656 | zfs_error_aux(hdl, dgettext(TEXT_DOMAIN, "invalid " | |
2657 | "stream (malformed nvlist)")); | |
2658 | return (EINVAL); | |
2659 | } | |
2660 | return (0); | |
2661 | } | |
2662 | ||
b5256303 TC |
2663 | /* |
2664 | * Returns the grand origin (origin of origin of origin...) of a given handle. | |
2665 | * If this dataset is not a clone, it simply returns a copy of the original | |
2666 | * handle. | |
2667 | */ | |
2668 | static zfs_handle_t * | |
2669 | recv_open_grand_origin(zfs_handle_t *zhp) | |
2670 | { | |
2671 | char origin[ZFS_MAX_DATASET_NAME_LEN]; | |
2672 | zprop_source_t src; | |
2673 | zfs_handle_t *ozhp = zfs_handle_dup(zhp); | |
2674 | ||
2675 | while (ozhp != NULL) { | |
2676 | if (zfs_prop_get(ozhp, ZFS_PROP_ORIGIN, origin, | |
2677 | sizeof (origin), &src, NULL, 0, B_FALSE) != 0) | |
2678 | break; | |
2679 | ||
2680 | (void) zfs_close(ozhp); | |
2681 | ozhp = zfs_open(zhp->zfs_hdl, origin, ZFS_TYPE_FILESYSTEM); | |
2682 | } | |
2683 | ||
2684 | return (ozhp); | |
2685 | } | |
2686 | ||
2687 | static int | |
dc1c630b | 2688 | recv_rename_impl(zfs_handle_t *zhp, const char *name, const char *newname) |
b5256303 TC |
2689 | { |
2690 | int err; | |
2691 | zfs_handle_t *ozhp = NULL; | |
2692 | ||
2693 | /* | |
2694 | * Attempt to rename the dataset. If it fails with EACCES we have | |
2695 | * attempted to rename the dataset outside of its encryption root. | |
2696 | * Force the dataset to become an encryption root and try again. | |
2697 | */ | |
dc1c630b | 2698 | err = lzc_rename(name, newname); |
b5256303 TC |
2699 | if (err == EACCES) { |
2700 | ozhp = recv_open_grand_origin(zhp); | |
2701 | if (ozhp == NULL) { | |
2702 | err = ENOENT; | |
2703 | goto out; | |
2704 | } | |
2705 | ||
2706 | err = lzc_change_key(ozhp->zfs_name, DCP_CMD_FORCE_NEW_KEY, | |
2707 | NULL, NULL, 0); | |
2708 | if (err != 0) | |
2709 | goto out; | |
2710 | ||
dc1c630b | 2711 | err = lzc_rename(name, newname); |
b5256303 TC |
2712 | } |
2713 | ||
2714 | out: | |
2715 | if (ozhp != NULL) | |
2716 | zfs_close(ozhp); | |
2717 | return (err); | |
2718 | } | |
2719 | ||
34dc7c2f BB |
2720 | static int |
2721 | recv_rename(libzfs_handle_t *hdl, const char *name, const char *tryname, | |
330d06f9 | 2722 | int baselen, char *newname, recvflags_t *flags) |
34dc7c2f BB |
2723 | { |
2724 | static int seq; | |
34dc7c2f | 2725 | int err; |
b5256303 TC |
2726 | prop_changelist_t *clp = NULL; |
2727 | zfs_handle_t *zhp = NULL; | |
34dc7c2f BB |
2728 | |
2729 | zhp = zfs_open(hdl, name, ZFS_TYPE_DATASET); | |
b5256303 TC |
2730 | if (zhp == NULL) { |
2731 | err = -1; | |
2732 | goto out; | |
2733 | } | |
b128c09f | 2734 | clp = changelist_gather(zhp, ZFS_PROP_NAME, 0, |
330d06f9 | 2735 | flags->force ? MS_FORCE : 0); |
b5256303 TC |
2736 | if (clp == NULL) { |
2737 | err = -1; | |
2738 | goto out; | |
2739 | } | |
34dc7c2f BB |
2740 | err = changelist_prefix(clp); |
2741 | if (err) | |
b5256303 | 2742 | goto out; |
34dc7c2f BB |
2743 | |
2744 | if (tryname) { | |
2745 | (void) strcpy(newname, tryname); | |
330d06f9 | 2746 | if (flags->verbose) { |
34dc7c2f | 2747 | (void) printf("attempting rename %s to %s\n", |
dc1c630b | 2748 | name, newname); |
34dc7c2f | 2749 | } |
dc1c630b | 2750 | err = recv_rename_impl(zhp, name, newname); |
34dc7c2f BB |
2751 | if (err == 0) |
2752 | changelist_rename(clp, name, tryname); | |
2753 | } else { | |
2754 | err = ENOENT; | |
2755 | } | |
2756 | ||
13fe0198 | 2757 | if (err != 0 && strncmp(name + baselen, "recv-", 5) != 0) { |
34dc7c2f BB |
2758 | seq++; |
2759 | ||
eca7b760 IK |
2760 | (void) snprintf(newname, ZFS_MAX_DATASET_NAME_LEN, |
2761 | "%.*srecv-%u-%u", baselen, name, getpid(), seq); | |
34dc7c2f | 2762 | |
330d06f9 | 2763 | if (flags->verbose) { |
34dc7c2f | 2764 | (void) printf("failed - trying rename %s to %s\n", |
dc1c630b | 2765 | name, newname); |
34dc7c2f | 2766 | } |
dc1c630b | 2767 | err = recv_rename_impl(zhp, name, newname); |
34dc7c2f BB |
2768 | if (err == 0) |
2769 | changelist_rename(clp, name, newname); | |
330d06f9 | 2770 | if (err && flags->verbose) { |
34dc7c2f BB |
2771 | (void) printf("failed (%u) - " |
2772 | "will try again on next pass\n", errno); | |
2773 | } | |
2774 | err = EAGAIN; | |
330d06f9 | 2775 | } else if (flags->verbose) { |
34dc7c2f BB |
2776 | if (err == 0) |
2777 | (void) printf("success\n"); | |
2778 | else | |
2779 | (void) printf("failed (%u)\n", errno); | |
2780 | } | |
2781 | ||
2782 | (void) changelist_postfix(clp); | |
b5256303 TC |
2783 | |
2784 | out: | |
2785 | if (clp != NULL) | |
2786 | changelist_free(clp); | |
2787 | if (zhp != NULL) | |
2788 | zfs_close(zhp); | |
2789 | ||
2790 | return (err); | |
2791 | } | |
2792 | ||
2793 | static int | |
2794 | recv_promote(libzfs_handle_t *hdl, const char *fsname, | |
2795 | const char *origin_fsname, recvflags_t *flags) | |
2796 | { | |
2797 | int err; | |
2798 | zfs_cmd_t zc = {"\0"}; | |
2799 | zfs_handle_t *zhp = NULL, *ozhp = NULL; | |
2800 | ||
2801 | if (flags->verbose) | |
2802 | (void) printf("promoting %s\n", fsname); | |
2803 | ||
2804 | (void) strlcpy(zc.zc_value, origin_fsname, sizeof (zc.zc_value)); | |
2805 | (void) strlcpy(zc.zc_name, fsname, sizeof (zc.zc_name)); | |
2806 | ||
2807 | /* | |
2808 | * Attempt to promote the dataset. If it fails with EACCES the | |
2809 | * promotion would cause this dataset to leave its encryption root. | |
2810 | * Force the origin to become an encryption root and try again. | |
2811 | */ | |
2812 | err = zfs_ioctl(hdl, ZFS_IOC_PROMOTE, &zc); | |
2813 | if (err == EACCES) { | |
2814 | zhp = zfs_open(hdl, fsname, ZFS_TYPE_DATASET); | |
2815 | if (zhp == NULL) { | |
2816 | err = -1; | |
2817 | goto out; | |
2818 | } | |
2819 | ||
2820 | ozhp = recv_open_grand_origin(zhp); | |
2821 | if (ozhp == NULL) { | |
2822 | err = -1; | |
2823 | goto out; | |
2824 | } | |
2825 | ||
2826 | err = lzc_change_key(ozhp->zfs_name, DCP_CMD_FORCE_NEW_KEY, | |
2827 | NULL, NULL, 0); | |
2828 | if (err != 0) | |
2829 | goto out; | |
2830 | ||
2831 | err = zfs_ioctl(hdl, ZFS_IOC_PROMOTE, &zc); | |
2832 | } | |
2833 | ||
2834 | out: | |
2835 | if (zhp != NULL) | |
2836 | zfs_close(zhp); | |
2837 | if (ozhp != NULL) | |
2838 | zfs_close(ozhp); | |
34dc7c2f BB |
2839 | |
2840 | return (err); | |
2841 | } | |
2842 | ||
2843 | static int | |
2844 | recv_destroy(libzfs_handle_t *hdl, const char *name, int baselen, | |
330d06f9 | 2845 | char *newname, recvflags_t *flags) |
34dc7c2f | 2846 | { |
34dc7c2f BB |
2847 | int err = 0; |
2848 | prop_changelist_t *clp; | |
2849 | zfs_handle_t *zhp; | |
45d1cae3 BB |
2850 | boolean_t defer = B_FALSE; |
2851 | int spa_version; | |
34dc7c2f BB |
2852 | |
2853 | zhp = zfs_open(hdl, name, ZFS_TYPE_DATASET); | |
2854 | if (zhp == NULL) | |
2855 | return (-1); | |
b128c09f | 2856 | clp = changelist_gather(zhp, ZFS_PROP_NAME, 0, |
330d06f9 | 2857 | flags->force ? MS_FORCE : 0); |
45d1cae3 BB |
2858 | if (zfs_get_type(zhp) == ZFS_TYPE_SNAPSHOT && |
2859 | zfs_spa_version(zhp, &spa_version) == 0 && | |
2860 | spa_version >= SPA_VERSION_USERREFS) | |
2861 | defer = B_TRUE; | |
34dc7c2f BB |
2862 | zfs_close(zhp); |
2863 | if (clp == NULL) | |
2864 | return (-1); | |
2865 | err = changelist_prefix(clp); | |
2866 | if (err) | |
2867 | return (err); | |
2868 | ||
330d06f9 | 2869 | if (flags->verbose) |
dc1c630b AG |
2870 | (void) printf("attempting destroy %s\n", name); |
2871 | if (zhp->zfs_type == ZFS_TYPE_SNAPSHOT) { | |
2872 | nvlist_t *nv = fnvlist_alloc(); | |
2873 | fnvlist_add_boolean(nv, name); | |
2874 | err = lzc_destroy_snaps(nv, defer, NULL); | |
2875 | fnvlist_free(nv); | |
2876 | } else { | |
2877 | err = lzc_destroy(name); | |
2878 | } | |
34dc7c2f | 2879 | if (err == 0) { |
330d06f9 | 2880 | if (flags->verbose) |
34dc7c2f | 2881 | (void) printf("success\n"); |
dc1c630b | 2882 | changelist_remove(clp, name); |
34dc7c2f BB |
2883 | } |
2884 | ||
2885 | (void) changelist_postfix(clp); | |
2886 | changelist_free(clp); | |
2887 | ||
45d1cae3 | 2888 | /* |
428870ff BB |
2889 | * Deferred destroy might destroy the snapshot or only mark it to be |
2890 | * destroyed later, and it returns success in either case. | |
45d1cae3 | 2891 | */ |
428870ff BB |
2892 | if (err != 0 || (defer && zfs_dataset_exists(hdl, name, |
2893 | ZFS_TYPE_SNAPSHOT))) { | |
34dc7c2f | 2894 | err = recv_rename(hdl, name, NULL, baselen, newname, flags); |
428870ff | 2895 | } |
34dc7c2f BB |
2896 | |
2897 | return (err); | |
2898 | } | |
2899 | ||
2900 | typedef struct guid_to_name_data { | |
2901 | uint64_t guid; | |
47dfff3b | 2902 | boolean_t bookmark_ok; |
34dc7c2f | 2903 | char *name; |
330d06f9 | 2904 | char *skip; |
30af21b0 PD |
2905 | uint64_t *redact_snap_guids; |
2906 | uint64_t num_redact_snaps; | |
34dc7c2f BB |
2907 | } guid_to_name_data_t; |
2908 | ||
65c7cc49 | 2909 | static boolean_t |
30af21b0 PD |
2910 | redact_snaps_match(zfs_handle_t *zhp, guid_to_name_data_t *gtnd) |
2911 | { | |
2912 | uint64_t *bmark_snaps; | |
2913 | uint_t bmark_num_snaps; | |
2914 | nvlist_t *nvl; | |
2915 | if (zhp->zfs_type != ZFS_TYPE_BOOKMARK) | |
2916 | return (B_FALSE); | |
2917 | ||
2918 | nvl = fnvlist_lookup_nvlist(zhp->zfs_props, | |
2919 | zfs_prop_to_name(ZFS_PROP_REDACT_SNAPS)); | |
2920 | bmark_snaps = fnvlist_lookup_uint64_array(nvl, ZPROP_VALUE, | |
2921 | &bmark_num_snaps); | |
2922 | if (bmark_num_snaps != gtnd->num_redact_snaps) | |
2923 | return (B_FALSE); | |
2924 | int i = 0; | |
2925 | for (; i < bmark_num_snaps; i++) { | |
2926 | int j = 0; | |
2927 | for (; j < bmark_num_snaps; j++) { | |
2928 | if (bmark_snaps[i] == gtnd->redact_snap_guids[j]) | |
2929 | break; | |
2930 | } | |
2931 | if (j == bmark_num_snaps) | |
2932 | break; | |
2933 | } | |
2934 | return (i == bmark_num_snaps); | |
2935 | } | |
2936 | ||
34dc7c2f BB |
2937 | static int |
2938 | guid_to_name_cb(zfs_handle_t *zhp, void *arg) | |
2939 | { | |
2940 | guid_to_name_data_t *gtnd = arg; | |
47dfff3b | 2941 | const char *slash; |
34dc7c2f BB |
2942 | int err; |
2943 | ||
330d06f9 | 2944 | if (gtnd->skip != NULL && |
47dfff3b MA |
2945 | (slash = strrchr(zhp->zfs_name, '/')) != NULL && |
2946 | strcmp(slash + 1, gtnd->skip) == 0) { | |
2947 | zfs_close(zhp); | |
330d06f9 MA |
2948 | return (0); |
2949 | } | |
2950 | ||
30af21b0 PD |
2951 | if (zfs_prop_get_int(zhp, ZFS_PROP_GUID) == gtnd->guid && |
2952 | (gtnd->num_redact_snaps == -1 || redact_snaps_match(zhp, gtnd))) { | |
34dc7c2f | 2953 | (void) strcpy(gtnd->name, zhp->zfs_name); |
428870ff | 2954 | zfs_close(zhp); |
34dc7c2f BB |
2955 | return (EEXIST); |
2956 | } | |
330d06f9 | 2957 | |
34dc7c2f | 2958 | err = zfs_iter_children(zhp, guid_to_name_cb, gtnd); |
47dfff3b MA |
2959 | if (err != EEXIST && gtnd->bookmark_ok) |
2960 | err = zfs_iter_bookmarks(zhp, guid_to_name_cb, gtnd); | |
34dc7c2f BB |
2961 | zfs_close(zhp); |
2962 | return (err); | |
2963 | } | |
2964 | ||
330d06f9 MA |
2965 | /* |
2966 | * Attempt to find the local dataset associated with this guid. In the case of | |
2967 | * multiple matches, we attempt to find the "best" match by searching | |
2968 | * progressively larger portions of the hierarchy. This allows one to send a | |
2969 | * tree of datasets individually and guarantee that we will find the source | |
2970 | * guid within that hierarchy, even if there are multiple matches elsewhere. | |
30af21b0 PD |
2971 | * |
2972 | * If num_redact_snaps is not -1, we attempt to find a redaction bookmark with | |
2973 | * the specified number of redaction snapshots. If num_redact_snaps isn't 0 or | |
2974 | * -1, then redact_snap_guids will be an array of the guids of the snapshots the | |
2975 | * redaction bookmark was created with. If num_redact_snaps is -1, then we will | |
2976 | * attempt to find a snapshot or bookmark (if bookmark_ok is passed) with the | |
2977 | * given guid. Note that a redaction bookmark can be returned if | |
2978 | * num_redact_snaps == -1. | |
330d06f9 | 2979 | */ |
34dc7c2f | 2980 | static int |
30af21b0 PD |
2981 | guid_to_name_redact_snaps(libzfs_handle_t *hdl, const char *parent, |
2982 | uint64_t guid, boolean_t bookmark_ok, uint64_t *redact_snap_guids, | |
2983 | uint64_t num_redact_snaps, char *name) | |
34dc7c2f | 2984 | { |
eca7b760 | 2985 | char pname[ZFS_MAX_DATASET_NAME_LEN]; |
34dc7c2f | 2986 | guid_to_name_data_t gtnd; |
34dc7c2f BB |
2987 | |
2988 | gtnd.guid = guid; | |
47dfff3b | 2989 | gtnd.bookmark_ok = bookmark_ok; |
34dc7c2f | 2990 | gtnd.name = name; |
330d06f9 | 2991 | gtnd.skip = NULL; |
30af21b0 PD |
2992 | gtnd.redact_snap_guids = redact_snap_guids; |
2993 | gtnd.num_redact_snaps = num_redact_snaps; | |
34dc7c2f | 2994 | |
330d06f9 | 2995 | /* |
47dfff3b MA |
2996 | * Search progressively larger portions of the hierarchy, starting |
2997 | * with the filesystem specified by 'parent'. This will | |
330d06f9 MA |
2998 | * select the "most local" version of the origin snapshot in the case |
2999 | * that there are multiple matching snapshots in the system. | |
3000 | */ | |
47dfff3b MA |
3001 | (void) strlcpy(pname, parent, sizeof (pname)); |
3002 | char *cp = strrchr(pname, '@'); | |
3003 | if (cp == NULL) | |
3004 | cp = strchr(pname, '\0'); | |
3005 | for (; cp != NULL; cp = strrchr(pname, '/')) { | |
330d06f9 | 3006 | /* Chop off the last component and open the parent */ |
34dc7c2f | 3007 | *cp = '\0'; |
47dfff3b | 3008 | zfs_handle_t *zhp = make_dataset_handle(hdl, pname); |
330d06f9 MA |
3009 | |
3010 | if (zhp == NULL) | |
3011 | continue; | |
47dfff3b MA |
3012 | int err = guid_to_name_cb(zfs_handle_dup(zhp), >nd); |
3013 | if (err != EEXIST) | |
3014 | err = zfs_iter_children(zhp, guid_to_name_cb, >nd); | |
3015 | if (err != EEXIST && bookmark_ok) | |
3016 | err = zfs_iter_bookmarks(zhp, guid_to_name_cb, >nd); | |
34dc7c2f | 3017 | zfs_close(zhp); |
330d06f9 MA |
3018 | if (err == EEXIST) |
3019 | return (0); | |
34dc7c2f | 3020 | |
330d06f9 | 3021 | /* |
47dfff3b MA |
3022 | * Remember the last portion of the dataset so we skip it next |
3023 | * time through (as we've already searched that portion of the | |
3024 | * hierarchy). | |
330d06f9 | 3025 | */ |
47dfff3b | 3026 | gtnd.skip = strrchr(pname, '/') + 1; |
330d06f9 | 3027 | } |
34dc7c2f | 3028 | |
330d06f9 | 3029 | return (ENOENT); |
34dc7c2f BB |
3030 | } |
3031 | ||
30af21b0 PD |
3032 | static int |
3033 | guid_to_name(libzfs_handle_t *hdl, const char *parent, uint64_t guid, | |
3034 | boolean_t bookmark_ok, char *name) | |
3035 | { | |
3036 | return (guid_to_name_redact_snaps(hdl, parent, guid, bookmark_ok, NULL, | |
3037 | -1, name)); | |
3038 | } | |
3039 | ||
34dc7c2f | 3040 | /* |
330d06f9 MA |
3041 | * Return +1 if guid1 is before guid2, 0 if they are the same, and -1 if |
3042 | * guid1 is after guid2. | |
34dc7c2f BB |
3043 | */ |
3044 | static int | |
3045 | created_before(libzfs_handle_t *hdl, avl_tree_t *avl, | |
3046 | uint64_t guid1, uint64_t guid2) | |
3047 | { | |
3048 | nvlist_t *nvfs; | |
98401d23 | 3049 | char *fsname = NULL, *snapname = NULL; |
eca7b760 | 3050 | char buf[ZFS_MAX_DATASET_NAME_LEN]; |
34dc7c2f | 3051 | int rv; |
330d06f9 MA |
3052 | zfs_handle_t *guid1hdl, *guid2hdl; |
3053 | uint64_t create1, create2; | |
34dc7c2f BB |
3054 | |
3055 | if (guid2 == 0) | |
3056 | return (0); | |
3057 | if (guid1 == 0) | |
3058 | return (1); | |
3059 | ||
3060 | nvfs = fsavl_find(avl, guid1, &snapname); | |
3061 | VERIFY(0 == nvlist_lookup_string(nvfs, "name", &fsname)); | |
3062 | (void) snprintf(buf, sizeof (buf), "%s@%s", fsname, snapname); | |
330d06f9 MA |
3063 | guid1hdl = zfs_open(hdl, buf, ZFS_TYPE_SNAPSHOT); |
3064 | if (guid1hdl == NULL) | |
34dc7c2f BB |
3065 | return (-1); |
3066 | ||
3067 | nvfs = fsavl_find(avl, guid2, &snapname); | |
3068 | VERIFY(0 == nvlist_lookup_string(nvfs, "name", &fsname)); | |
3069 | (void) snprintf(buf, sizeof (buf), "%s@%s", fsname, snapname); | |
330d06f9 MA |
3070 | guid2hdl = zfs_open(hdl, buf, ZFS_TYPE_SNAPSHOT); |
3071 | if (guid2hdl == NULL) { | |
3072 | zfs_close(guid1hdl); | |
34dc7c2f BB |
3073 | return (-1); |
3074 | } | |
3075 | ||
330d06f9 MA |
3076 | create1 = zfs_prop_get_int(guid1hdl, ZFS_PROP_CREATETXG); |
3077 | create2 = zfs_prop_get_int(guid2hdl, ZFS_PROP_CREATETXG); | |
34dc7c2f | 3078 | |
330d06f9 MA |
3079 | if (create1 < create2) |
3080 | rv = -1; | |
3081 | else if (create1 > create2) | |
3082 | rv = +1; | |
3083 | else | |
3084 | rv = 0; | |
3085 | ||
3086 | zfs_close(guid1hdl); | |
3087 | zfs_close(guid2hdl); | |
34dc7c2f BB |
3088 | |
3089 | return (rv); | |
3090 | } | |
3091 | ||
b5256303 | 3092 | /* |
83472fab | 3093 | * This function reestablishes the hierarchy of encryption roots after a |
b5256303 TC |
3094 | * recursive incremental receive has completed. This must be done after the |
3095 | * second call to recv_incremental_replication() has renamed and promoted all | |
83472fab | 3096 | * sent datasets to their final locations in the dataset hierarchy. |
b5256303 TC |
3097 | */ |
3098 | static int | |
bb61cc31 | 3099 | recv_fix_encryption_hierarchy(libzfs_handle_t *hdl, const char *top_zfs, |
b5256303 TC |
3100 | nvlist_t *stream_nv, avl_tree_t *stream_avl) |
3101 | { | |
3102 | int err; | |
3103 | nvpair_t *fselem = NULL; | |
3104 | nvlist_t *stream_fss; | |
3105 | ||
3106 | VERIFY(0 == nvlist_lookup_nvlist(stream_nv, "fss", &stream_fss)); | |
3107 | ||
3108 | while ((fselem = nvlist_next_nvpair(stream_fss, fselem)) != NULL) { | |
3109 | zfs_handle_t *zhp = NULL; | |
3110 | uint64_t crypt; | |
3111 | nvlist_t *snaps, *props, *stream_nvfs = NULL; | |
3112 | nvpair_t *snapel = NULL; | |
3113 | boolean_t is_encroot, is_clone, stream_encroot; | |
3114 | char *cp; | |
3115 | char *stream_keylocation = NULL; | |
3116 | char keylocation[MAXNAMELEN]; | |
3117 | char fsname[ZFS_MAX_DATASET_NAME_LEN]; | |
3118 | ||
3119 | keylocation[0] = '\0'; | |
3120 | VERIFY(0 == nvpair_value_nvlist(fselem, &stream_nvfs)); | |
3121 | VERIFY(0 == nvlist_lookup_nvlist(stream_nvfs, "snaps", &snaps)); | |
3122 | VERIFY(0 == nvlist_lookup_nvlist(stream_nvfs, "props", &props)); | |
3123 | stream_encroot = nvlist_exists(stream_nvfs, "is_encroot"); | |
3124 | ||
3125 | /* find a snapshot from the stream that exists locally */ | |
3126 | err = ENOENT; | |
3127 | while ((snapel = nvlist_next_nvpair(snaps, snapel)) != NULL) { | |
3128 | uint64_t guid; | |
3129 | ||
3130 | VERIFY(0 == nvpair_value_uint64(snapel, &guid)); | |
bb61cc31 | 3131 | err = guid_to_name(hdl, top_zfs, guid, B_FALSE, |
b5256303 TC |
3132 | fsname); |
3133 | if (err == 0) | |
3134 | break; | |
3135 | } | |
3136 | ||
3137 | if (err != 0) | |
3138 | continue; | |
3139 | ||
3140 | cp = strchr(fsname, '@'); | |
3141 | if (cp != NULL) | |
3142 | *cp = '\0'; | |
3143 | ||
3144 | zhp = zfs_open(hdl, fsname, ZFS_TYPE_DATASET); | |
3145 | if (zhp == NULL) { | |
3146 | err = ENOENT; | |
3147 | goto error; | |
3148 | } | |
3149 | ||
3150 | crypt = zfs_prop_get_int(zhp, ZFS_PROP_ENCRYPTION); | |
3151 | is_clone = zhp->zfs_dmustats.dds_origin[0] != '\0'; | |
3152 | (void) zfs_crypto_get_encryption_root(zhp, &is_encroot, NULL); | |
3153 | ||
da689887 | 3154 | /* we don't need to do anything for unencrypted datasets */ |
b5256303 TC |
3155 | if (crypt == ZIO_CRYPT_OFF) { |
3156 | zfs_close(zhp); | |
3157 | continue; | |
3158 | } | |
3159 | ||
3160 | /* | |
3161 | * If the dataset is flagged as an encryption root, was not | |
3162 | * received as a clone and is not currently an encryption root, | |
3163 | * force it to become one. Fixup the keylocation if necessary. | |
3164 | */ | |
3165 | if (stream_encroot) { | |
3166 | if (!is_clone && !is_encroot) { | |
3167 | err = lzc_change_key(fsname, | |
3168 | DCP_CMD_FORCE_NEW_KEY, NULL, NULL, 0); | |
3169 | if (err != 0) { | |
3170 | zfs_close(zhp); | |
3171 | goto error; | |
3172 | } | |
3173 | } | |
3174 | ||
3175 | VERIFY(0 == nvlist_lookup_string(props, | |
3176 | zfs_prop_to_name(ZFS_PROP_KEYLOCATION), | |
3177 | &stream_keylocation)); | |
3178 | ||
3179 | /* | |
3180 | * Refresh the properties in case the call to | |
3181 | * lzc_change_key() changed the value. | |
3182 | */ | |
3183 | zfs_refresh_properties(zhp); | |
3184 | err = zfs_prop_get(zhp, ZFS_PROP_KEYLOCATION, | |
3185 | keylocation, sizeof (keylocation), NULL, NULL, | |
3186 | 0, B_TRUE); | |
3187 | if (err != 0) { | |
3188 | zfs_close(zhp); | |
3189 | goto error; | |
3190 | } | |
3191 | ||
3192 | if (strcmp(keylocation, stream_keylocation) != 0) { | |
3193 | err = zfs_prop_set(zhp, | |
3194 | zfs_prop_to_name(ZFS_PROP_KEYLOCATION), | |
3195 | stream_keylocation); | |
3196 | if (err != 0) { | |
3197 | zfs_close(zhp); | |
3198 | goto error; | |
3199 | } | |
3200 | } | |
3201 | } | |
3202 | ||
3203 | /* | |
3204 | * If the dataset is not flagged as an encryption root and is | |
3205 | * currently an encryption root, force it to inherit from its | |
4807c0ba TC |
3206 | * parent. The root of a raw send should never be |
3207 | * force-inherited. | |
b5256303 | 3208 | */ |
4807c0ba TC |
3209 | if (!stream_encroot && is_encroot && |
3210 | strcmp(top_zfs, fsname) != 0) { | |
b5256303 TC |
3211 | err = lzc_change_key(fsname, DCP_CMD_FORCE_INHERIT, |
3212 | NULL, NULL, 0); | |
3213 | if (err != 0) { | |
3214 | zfs_close(zhp); | |
3215 | goto error; | |
3216 | } | |
3217 | } | |
3218 | ||
3219 | zfs_close(zhp); | |
3220 | } | |
3221 | ||
3222 | return (0); | |
3223 | ||
3224 | error: | |
3225 | return (err); | |
3226 | } | |
3227 | ||
34dc7c2f BB |
3228 | static int |
3229 | recv_incremental_replication(libzfs_handle_t *hdl, const char *tofs, | |
330d06f9 | 3230 | recvflags_t *flags, nvlist_t *stream_nv, avl_tree_t *stream_avl, |
428870ff | 3231 | nvlist_t *renamed) |
34dc7c2f | 3232 | { |
7509a3d2 | 3233 | nvlist_t *local_nv, *deleted = NULL; |
34dc7c2f BB |
3234 | avl_tree_t *local_avl; |
3235 | nvpair_t *fselem, *nextfselem; | |
428870ff | 3236 | char *fromsnap; |
eca7b760 | 3237 | char newname[ZFS_MAX_DATASET_NAME_LEN]; |
7509a3d2 | 3238 | char guidname[32]; |
34dc7c2f | 3239 | int error; |
428870ff BB |
3240 | boolean_t needagain, progress, recursive; |
3241 | char *s1, *s2; | |
34dc7c2f BB |
3242 | |
3243 | VERIFY(0 == nvlist_lookup_string(stream_nv, "fromsnap", &fromsnap)); | |
428870ff BB |
3244 | |
3245 | recursive = (nvlist_lookup_boolean(stream_nv, "not_recursive") == | |
3246 | ENOENT); | |
34dc7c2f | 3247 | |
330d06f9 | 3248 | if (flags->dryrun) |
34dc7c2f BB |
3249 | return (0); |
3250 | ||
3251 | again: | |
3252 | needagain = progress = B_FALSE; | |
3253 | ||
7509a3d2 | 3254 | VERIFY(0 == nvlist_alloc(&deleted, NV_UNIQUE_NAME, 0)); |
3255 | ||
34dc7c2f | 3256 | if ((error = gather_nvlist(hdl, tofs, fromsnap, NULL, |
f94b3cbf TC |
3257 | recursive, B_TRUE, B_FALSE, recursive, B_FALSE, B_FALSE, |
3258 | B_FALSE, B_TRUE, &local_nv, &local_avl)) != 0) | |
34dc7c2f BB |
3259 | return (error); |
3260 | ||
3261 | /* | |
3262 | * Process deletes and renames | |
3263 | */ | |
3264 | for (fselem = nvlist_next_nvpair(local_nv, NULL); | |
3265 | fselem; fselem = nextfselem) { | |
3266 | nvlist_t *nvfs, *snaps; | |
3267 | nvlist_t *stream_nvfs = NULL; | |
3268 | nvpair_t *snapelem, *nextsnapelem; | |
3269 | uint64_t fromguid = 0; | |
3270 | uint64_t originguid = 0; | |
3271 | uint64_t stream_originguid = 0; | |
3272 | uint64_t parent_fromsnap_guid, stream_parent_fromsnap_guid; | |
3273 | char *fsname, *stream_fsname; | |
3274 | ||
3275 | nextfselem = nvlist_next_nvpair(local_nv, fselem); | |
3276 | ||
3277 | VERIFY(0 == nvpair_value_nvlist(fselem, &nvfs)); | |
3278 | VERIFY(0 == nvlist_lookup_nvlist(nvfs, "snaps", &snaps)); | |
3279 | VERIFY(0 == nvlist_lookup_string(nvfs, "name", &fsname)); | |
3280 | VERIFY(0 == nvlist_lookup_uint64(nvfs, "parentfromsnap", | |
3281 | &parent_fromsnap_guid)); | |
3282 | (void) nvlist_lookup_uint64(nvfs, "origin", &originguid); | |
3283 | ||
3284 | /* | |
3285 | * First find the stream's fs, so we can check for | |
3286 | * a different origin (due to "zfs promote") | |
3287 | */ | |
3288 | for (snapelem = nvlist_next_nvpair(snaps, NULL); | |
3289 | snapelem; snapelem = nvlist_next_nvpair(snaps, snapelem)) { | |
3290 | uint64_t thisguid; | |
3291 | ||
3292 | VERIFY(0 == nvpair_value_uint64(snapelem, &thisguid)); | |
3293 | stream_nvfs = fsavl_find(stream_avl, thisguid, NULL); | |
3294 | ||
3295 | if (stream_nvfs != NULL) | |
3296 | break; | |
3297 | } | |
3298 | ||
3299 | /* check for promote */ | |
3300 | (void) nvlist_lookup_uint64(stream_nvfs, "origin", | |
3301 | &stream_originguid); | |
3302 | if (stream_nvfs && originguid != stream_originguid) { | |
3303 | switch (created_before(hdl, local_avl, | |
3304 | stream_originguid, originguid)) { | |
3305 | case 1: { | |
3306 | /* promote it! */ | |
34dc7c2f BB |
3307 | nvlist_t *origin_nvfs; |
3308 | char *origin_fsname; | |
3309 | ||
34dc7c2f BB |
3310 | origin_nvfs = fsavl_find(local_avl, originguid, |
3311 | NULL); | |
3312 | VERIFY(0 == nvlist_lookup_string(origin_nvfs, | |
3313 | "name", &origin_fsname)); | |
b5256303 TC |
3314 | error = recv_promote(hdl, fsname, origin_fsname, |
3315 | flags); | |
34dc7c2f BB |
3316 | if (error == 0) |
3317 | progress = B_TRUE; | |
3318 | break; | |
3319 | } | |
3320 | default: | |
3321 | break; | |
3322 | case -1: | |
3323 | fsavl_destroy(local_avl); | |
3324 | nvlist_free(local_nv); | |
3325 | return (-1); | |
3326 | } | |
3327 | /* | |
3328 | * We had/have the wrong origin, therefore our | |
3329 | * list of snapshots is wrong. Need to handle | |
3330 | * them on the next pass. | |
3331 | */ | |
3332 | needagain = B_TRUE; | |
3333 | continue; | |
3334 | } | |
3335 | ||
3336 | for (snapelem = nvlist_next_nvpair(snaps, NULL); | |
3337 | snapelem; snapelem = nextsnapelem) { | |
3338 | uint64_t thisguid; | |
3339 | char *stream_snapname; | |
b128c09f | 3340 | nvlist_t *found, *props; |
34dc7c2f BB |
3341 | |
3342 | nextsnapelem = nvlist_next_nvpair(snaps, snapelem); | |
3343 | ||
3344 | VERIFY(0 == nvpair_value_uint64(snapelem, &thisguid)); | |
3345 | found = fsavl_find(stream_avl, thisguid, | |
3346 | &stream_snapname); | |
3347 | ||
3348 | /* check for delete */ | |
3349 | if (found == NULL) { | |
eca7b760 | 3350 | char name[ZFS_MAX_DATASET_NAME_LEN]; |
34dc7c2f | 3351 | |
330d06f9 | 3352 | if (!flags->force) |
34dc7c2f BB |
3353 | continue; |
3354 | ||
3355 | (void) snprintf(name, sizeof (name), "%s@%s", | |
3356 | fsname, nvpair_name(snapelem)); | |
3357 | ||
3358 | error = recv_destroy(hdl, name, | |
3359 | strlen(fsname)+1, newname, flags); | |
3360 | if (error) | |
3361 | needagain = B_TRUE; | |
3362 | else | |
3363 | progress = B_TRUE; | |
3df29340 BB |
3364 | sprintf(guidname, "%llu", |
3365 | (u_longlong_t)thisguid); | |
7509a3d2 | 3366 | nvlist_add_boolean(deleted, guidname); |
34dc7c2f BB |
3367 | continue; |
3368 | } | |
3369 | ||
3370 | stream_nvfs = found; | |
3371 | ||
b128c09f BB |
3372 | if (0 == nvlist_lookup_nvlist(stream_nvfs, "snapprops", |
3373 | &props) && 0 == nvlist_lookup_nvlist(props, | |
3374 | stream_snapname, &props)) { | |
13fe0198 | 3375 | zfs_cmd_t zc = {"\0"}; |
b128c09f | 3376 | |
428870ff | 3377 | zc.zc_cookie = B_TRUE; /* received */ |
b128c09f BB |
3378 | (void) snprintf(zc.zc_name, sizeof (zc.zc_name), |
3379 | "%s@%s", fsname, nvpair_name(snapelem)); | |
3380 | if (zcmd_write_src_nvlist(hdl, &zc, | |
3381 | props) == 0) { | |
3382 | (void) zfs_ioctl(hdl, | |
3383 | ZFS_IOC_SET_PROP, &zc); | |
3384 | zcmd_free_nvlists(&zc); | |
3385 | } | |
3386 | } | |
3387 | ||
34dc7c2f BB |
3388 | /* check for different snapname */ |
3389 | if (strcmp(nvpair_name(snapelem), | |
3390 | stream_snapname) != 0) { | |
eca7b760 IK |
3391 | char name[ZFS_MAX_DATASET_NAME_LEN]; |
3392 | char tryname[ZFS_MAX_DATASET_NAME_LEN]; | |
34dc7c2f BB |
3393 | |
3394 | (void) snprintf(name, sizeof (name), "%s@%s", | |
3395 | fsname, nvpair_name(snapelem)); | |
3396 | (void) snprintf(tryname, sizeof (name), "%s@%s", | |
3397 | fsname, stream_snapname); | |
3398 | ||
3399 | error = recv_rename(hdl, name, tryname, | |
3400 | strlen(fsname)+1, newname, flags); | |
3401 | if (error) | |
3402 | needagain = B_TRUE; | |
3403 | else | |
3404 | progress = B_TRUE; | |
3405 | } | |
3406 | ||
3407 | if (strcmp(stream_snapname, fromsnap) == 0) | |
3408 | fromguid = thisguid; | |
3409 | } | |
3410 | ||
3411 | /* check for delete */ | |
3412 | if (stream_nvfs == NULL) { | |
330d06f9 | 3413 | if (!flags->force) |
34dc7c2f BB |
3414 | continue; |
3415 | ||
3416 | error = recv_destroy(hdl, fsname, strlen(tofs)+1, | |
3417 | newname, flags); | |
3418 | if (error) | |
3419 | needagain = B_TRUE; | |
3420 | else | |
3421 | progress = B_TRUE; | |
3df29340 | 3422 | sprintf(guidname, "%llu", |
02730c33 | 3423 | (u_longlong_t)parent_fromsnap_guid); |
7509a3d2 | 3424 | nvlist_add_boolean(deleted, guidname); |
34dc7c2f BB |
3425 | continue; |
3426 | } | |
3427 | ||
428870ff | 3428 | if (fromguid == 0) { |
330d06f9 | 3429 | if (flags->verbose) { |
428870ff BB |
3430 | (void) printf("local fs %s does not have " |
3431 | "fromsnap (%s in stream); must have " | |
3432 | "been deleted locally; ignoring\n", | |
3433 | fsname, fromsnap); | |
3434 | } | |
34dc7c2f BB |
3435 | continue; |
3436 | } | |
3437 | ||
3438 | VERIFY(0 == nvlist_lookup_string(stream_nvfs, | |
3439 | "name", &stream_fsname)); | |
3440 | VERIFY(0 == nvlist_lookup_uint64(stream_nvfs, | |
3441 | "parentfromsnap", &stream_parent_fromsnap_guid)); | |
3442 | ||
428870ff BB |
3443 | s1 = strrchr(fsname, '/'); |
3444 | s2 = strrchr(stream_fsname, '/'); | |
3445 | ||
7509a3d2 | 3446 | /* |
3447 | * Check if we're going to rename based on parent guid change | |
3448 | * and the current parent guid was also deleted. If it was then | |
3449 | * rename will fail and is likely unneeded, so avoid this and | |
3450 | * force an early retry to determine the new | |
3451 | * parent_fromsnap_guid. | |
3452 | */ | |
3453 | if (stream_parent_fromsnap_guid != 0 && | |
3454 | parent_fromsnap_guid != 0 && | |
3455 | stream_parent_fromsnap_guid != parent_fromsnap_guid) { | |
3df29340 | 3456 | sprintf(guidname, "%llu", |
02730c33 | 3457 | (u_longlong_t)parent_fromsnap_guid); |
7509a3d2 | 3458 | if (nvlist_exists(deleted, guidname)) { |
3459 | progress = B_TRUE; | |
3460 | needagain = B_TRUE; | |
3461 | goto doagain; | |
3462 | } | |
3463 | } | |
3464 | ||
428870ff BB |
3465 | /* |
3466 | * Check for rename. If the exact receive path is specified, it | |
3467 | * does not count as a rename, but we still need to check the | |
3468 | * datasets beneath it. | |
3469 | */ | |
34dc7c2f | 3470 | if ((stream_parent_fromsnap_guid != 0 && |
428870ff | 3471 | parent_fromsnap_guid != 0 && |
34dc7c2f | 3472 | stream_parent_fromsnap_guid != parent_fromsnap_guid) || |
330d06f9 | 3473 | ((flags->isprefix || strcmp(tofs, fsname) != 0) && |
428870ff | 3474 | (s1 != NULL) && (s2 != NULL) && strcmp(s1, s2) != 0)) { |
34dc7c2f | 3475 | nvlist_t *parent; |
eca7b760 | 3476 | char tryname[ZFS_MAX_DATASET_NAME_LEN]; |
34dc7c2f BB |
3477 | |
3478 | parent = fsavl_find(local_avl, | |
3479 | stream_parent_fromsnap_guid, NULL); | |
3480 | /* | |
3481 | * NB: parent might not be found if we used the | |
3482 | * tosnap for stream_parent_fromsnap_guid, | |
3483 | * because the parent is a newly-created fs; | |
3484 | * we'll be able to rename it after we recv the | |
3485 | * new fs. | |
3486 | */ | |
3487 | if (parent != NULL) { | |
3488 | char *pname; | |
3489 | ||
3490 | VERIFY(0 == nvlist_lookup_string(parent, "name", | |
3491 | &pname)); | |
3492 | (void) snprintf(tryname, sizeof (tryname), | |
3493 | "%s%s", pname, strrchr(stream_fsname, '/')); | |
3494 | } else { | |
3495 | tryname[0] = '\0'; | |
330d06f9 | 3496 | if (flags->verbose) { |
34dc7c2f BB |
3497 | (void) printf("local fs %s new parent " |
3498 | "not found\n", fsname); | |
3499 | } | |
3500 | } | |
3501 | ||
428870ff BB |
3502 | newname[0] = '\0'; |
3503 | ||
34dc7c2f BB |
3504 | error = recv_rename(hdl, fsname, tryname, |
3505 | strlen(tofs)+1, newname, flags); | |
428870ff BB |
3506 | |
3507 | if (renamed != NULL && newname[0] != '\0') { | |
3508 | VERIFY(0 == nvlist_add_boolean(renamed, | |
3509 | newname)); | |
3510 | } | |
3511 | ||
34dc7c2f BB |
3512 | if (error) |
3513 | needagain = B_TRUE; | |
3514 | else | |
3515 | progress = B_TRUE; | |
3516 | } | |
3517 | } | |
3518 | ||
7509a3d2 | 3519 | doagain: |
34dc7c2f BB |
3520 | fsavl_destroy(local_avl); |
3521 | nvlist_free(local_nv); | |
7509a3d2 | 3522 | nvlist_free(deleted); |
34dc7c2f BB |
3523 | |
3524 | if (needagain && progress) { | |
3525 | /* do another pass to fix up temporary names */ | |
330d06f9 | 3526 | if (flags->verbose) |
34dc7c2f BB |
3527 | (void) printf("another pass:\n"); |
3528 | goto again; | |
3529 | } | |
3530 | ||
b5256303 | 3531 | return (needagain || error != 0); |
34dc7c2f BB |
3532 | } |
3533 | ||
3534 | static int | |
3535 | zfs_receive_package(libzfs_handle_t *hdl, int fd, const char *destname, | |
330d06f9 | 3536 | recvflags_t *flags, dmu_replay_record_t *drr, zio_cksum_t *zc, |
196bee4c | 3537 | char **top_zfs, nvlist_t *cmdprops) |
34dc7c2f BB |
3538 | { |
3539 | nvlist_t *stream_nv = NULL; | |
3540 | avl_tree_t *stream_avl = NULL; | |
3541 | char *fromsnap = NULL; | |
671c9354 | 3542 | char *sendsnap = NULL; |
428870ff | 3543 | char *cp; |
eca7b760 IK |
3544 | char tofs[ZFS_MAX_DATASET_NAME_LEN]; |
3545 | char sendfs[ZFS_MAX_DATASET_NAME_LEN]; | |
34dc7c2f BB |
3546 | char errbuf[1024]; |
3547 | dmu_replay_record_t drre; | |
3548 | int error; | |
3549 | boolean_t anyerr = B_FALSE; | |
3550 | boolean_t softerr = B_FALSE; | |
b5256303 | 3551 | boolean_t recursive, raw; |
34dc7c2f BB |
3552 | |
3553 | (void) snprintf(errbuf, sizeof (errbuf), dgettext(TEXT_DOMAIN, | |
3554 | "cannot receive")); | |
3555 | ||
34dc7c2f BB |
3556 | assert(drr->drr_type == DRR_BEGIN); |
3557 | assert(drr->drr_u.drr_begin.drr_magic == DMU_BACKUP_MAGIC); | |
428870ff BB |
3558 | assert(DMU_GET_STREAM_HDRTYPE(drr->drr_u.drr_begin.drr_versioninfo) == |
3559 | DMU_COMPOUNDSTREAM); | |
34dc7c2f BB |
3560 | |
3561 | /* | |
3562 | * Read in the nvlist from the stream. | |
3563 | */ | |
3564 | if (drr->drr_payloadlen != 0) { | |
34dc7c2f | 3565 | error = recv_read_nvlist(hdl, fd, drr->drr_payloadlen, |
330d06f9 | 3566 | &stream_nv, flags->byteswap, zc); |
34dc7c2f BB |
3567 | if (error) { |
3568 | error = zfs_error(hdl, EZFS_BADSTREAM, errbuf); | |
3569 | goto out; | |
3570 | } | |
3571 | } | |
3572 | ||
428870ff BB |
3573 | recursive = (nvlist_lookup_boolean(stream_nv, "not_recursive") == |
3574 | ENOENT); | |
b5256303 | 3575 | raw = (nvlist_lookup_boolean(stream_nv, "raw") == 0); |
428870ff BB |
3576 | |
3577 | if (recursive && strchr(destname, '@')) { | |
3578 | zfs_error_aux(hdl, dgettext(TEXT_DOMAIN, | |
3579 | "cannot specify snapshot name for multi-snapshot stream")); | |
3580 | error = zfs_error(hdl, EZFS_BADSTREAM, errbuf); | |
3581 | goto out; | |
3582 | } | |
3583 | ||
34dc7c2f BB |
3584 | /* |
3585 | * Read in the end record and verify checksum. | |
3586 | */ | |
3587 | if (0 != (error = recv_read(hdl, fd, &drre, sizeof (drre), | |
330d06f9 | 3588 | flags->byteswap, NULL))) |
34dc7c2f | 3589 | goto out; |
330d06f9 | 3590 | if (flags->byteswap) { |
34dc7c2f BB |
3591 | drre.drr_type = BSWAP_32(drre.drr_type); |
3592 | drre.drr_u.drr_end.drr_checksum.zc_word[0] = | |
3593 | BSWAP_64(drre.drr_u.drr_end.drr_checksum.zc_word[0]); | |
3594 | drre.drr_u.drr_end.drr_checksum.zc_word[1] = | |
3595 | BSWAP_64(drre.drr_u.drr_end.drr_checksum.zc_word[1]); | |
3596 | drre.drr_u.drr_end.drr_checksum.zc_word[2] = | |
3597 | BSWAP_64(drre.drr_u.drr_end.drr_checksum.zc_word[2]); | |
3598 | drre.drr_u.drr_end.drr_checksum.zc_word[3] = | |
3599 | BSWAP_64(drre.drr_u.drr_end.drr_checksum.zc_word[3]); | |
3600 | } | |
3601 | if (drre.drr_type != DRR_END) { | |
3602 | error = zfs_error(hdl, EZFS_BADSTREAM, errbuf); | |
3603 | goto out; | |
3604 | } | |
3605 | if (!ZIO_CHECKSUM_EQUAL(drre.drr_u.drr_end.drr_checksum, *zc)) { | |
3606 | zfs_error_aux(hdl, dgettext(TEXT_DOMAIN, | |
3607 | "incorrect header checksum")); | |
3608 | error = zfs_error(hdl, EZFS_BADSTREAM, errbuf); | |
3609 | goto out; | |
3610 | } | |
3611 | ||
3612 | (void) nvlist_lookup_string(stream_nv, "fromsnap", &fromsnap); | |
3613 | ||
3614 | if (drr->drr_payloadlen != 0) { | |
3615 | nvlist_t *stream_fss; | |
3616 | ||
3617 | VERIFY(0 == nvlist_lookup_nvlist(stream_nv, "fss", | |
3618 | &stream_fss)); | |
3619 | if ((stream_avl = fsavl_create(stream_fss)) == NULL) { | |
3620 | zfs_error_aux(hdl, dgettext(TEXT_DOMAIN, | |
3621 | "couldn't allocate avl tree")); | |
3622 | error = zfs_error(hdl, EZFS_NOMEM, errbuf); | |
3623 | goto out; | |
3624 | } | |
3625 | ||
4c3c6b6c | 3626 | if (fromsnap != NULL && recursive) { |
428870ff BB |
3627 | nvlist_t *renamed = NULL; |
3628 | nvpair_t *pair = NULL; | |
3629 | ||
eca7b760 | 3630 | (void) strlcpy(tofs, destname, sizeof (tofs)); |
330d06f9 | 3631 | if (flags->isprefix) { |
428870ff BB |
3632 | struct drr_begin *drrb = &drr->drr_u.drr_begin; |
3633 | int i; | |
3634 | ||
330d06f9 | 3635 | if (flags->istail) { |
428870ff BB |
3636 | cp = strrchr(drrb->drr_toname, '/'); |
3637 | if (cp == NULL) { | |
3638 | (void) strlcat(tofs, "/", | |
eca7b760 | 3639 | sizeof (tofs)); |
428870ff BB |
3640 | i = 0; |
3641 | } else { | |
3642 | i = (cp - drrb->drr_toname); | |
3643 | } | |
3644 | } else { | |
3645 | i = strcspn(drrb->drr_toname, "/@"); | |
3646 | } | |
34dc7c2f | 3647 | /* zfs_receive_one() will create_parents() */ |
428870ff | 3648 | (void) strlcat(tofs, &drrb->drr_toname[i], |
eca7b760 | 3649 | sizeof (tofs)); |
34dc7c2f BB |
3650 | *strchr(tofs, '@') = '\0'; |
3651 | } | |
428870ff | 3652 | |
4c3c6b6c | 3653 | if (!flags->dryrun && !flags->nomount) { |
428870ff BB |
3654 | VERIFY(0 == nvlist_alloc(&renamed, |
3655 | NV_UNIQUE_NAME, 0)); | |
3656 | } | |
3657 | ||
3658 | softerr = recv_incremental_replication(hdl, tofs, flags, | |
3659 | stream_nv, stream_avl, renamed); | |
3660 | ||
3661 | /* Unmount renamed filesystems before receiving. */ | |
3662 | while ((pair = nvlist_next_nvpair(renamed, | |
3663 | pair)) != NULL) { | |
3664 | zfs_handle_t *zhp; | |
3665 | prop_changelist_t *clp = NULL; | |
3666 | ||
3667 | zhp = zfs_open(hdl, nvpair_name(pair), | |
3668 | ZFS_TYPE_FILESYSTEM); | |
3669 | if (zhp != NULL) { | |
3670 | clp = changelist_gather(zhp, | |
a57d3d45 MZ |
3671 | ZFS_PROP_MOUNTPOINT, 0, |
3672 | flags->forceunmount ? MS_FORCE : 0); | |
428870ff BB |
3673 | zfs_close(zhp); |
3674 | if (clp != NULL) { | |
3675 | softerr |= | |
3676 | changelist_prefix(clp); | |
3677 | changelist_free(clp); | |
3678 | } | |
3679 | } | |
3680 | } | |
3681 | ||
3682 | nvlist_free(renamed); | |
34dc7c2f BB |
3683 | } |
3684 | } | |
3685 | ||
428870ff BB |
3686 | /* |
3687 | * Get the fs specified by the first path in the stream (the top level | |
3688 | * specified by 'zfs send') and pass it to each invocation of | |
3689 | * zfs_receive_one(). | |
3690 | */ | |
3691 | (void) strlcpy(sendfs, drr->drr_u.drr_begin.drr_toname, | |
eca7b760 | 3692 | sizeof (sendfs)); |
671c9354 | 3693 | if ((cp = strchr(sendfs, '@')) != NULL) { |
428870ff | 3694 | *cp = '\0'; |
671c9354 DM |
3695 | /* |
3696 | * Find the "sendsnap", the final snapshot in a replication | |
3697 | * stream. zfs_receive_one() handles certain errors | |
3698 | * differently, depending on if the contained stream is the | |
3699 | * last one or not. | |
3700 | */ | |
3701 | sendsnap = (cp + 1); | |
3702 | } | |
34dc7c2f BB |
3703 | |
3704 | /* Finally, receive each contained stream */ | |
3705 | do { | |
3706 | /* | |
3707 | * we should figure out if it has a recoverable | |
3708 | * error, in which case do a recv_skip() and drive on. | |
3709 | * Note, if we fail due to already having this guid, | |
3710 | * zfs_receive_one() will take care of it (ie, | |
3711 | * recv_skip() and return 0). | |
3712 | */ | |
fcff0f35 | 3713 | error = zfs_receive_impl(hdl, destname, NULL, flags, fd, |
196bee4c | 3714 | sendfs, stream_nv, stream_avl, top_zfs, sendsnap, cmdprops); |
34dc7c2f BB |
3715 | if (error == ENODATA) { |
3716 | error = 0; | |
3717 | break; | |
3718 | } | |
3719 | anyerr |= error; | |
3720 | } while (error == 0); | |
3721 | ||
4c3c6b6c | 3722 | if (drr->drr_payloadlen != 0 && recursive && fromsnap != NULL) { |
34dc7c2f BB |
3723 | /* |
3724 | * Now that we have the fs's they sent us, try the | |
3725 | * renames again. | |
3726 | */ | |
3727 | softerr = recv_incremental_replication(hdl, tofs, flags, | |
428870ff | 3728 | stream_nv, stream_avl, NULL); |
34dc7c2f BB |
3729 | } |
3730 | ||
bb61cc31 TC |
3731 | if (raw && softerr == 0 && *top_zfs != NULL) { |
3732 | softerr = recv_fix_encryption_hierarchy(hdl, *top_zfs, | |
b5256303 TC |
3733 | stream_nv, stream_avl); |
3734 | } | |
3735 | ||
34dc7c2f BB |
3736 | out: |
3737 | fsavl_destroy(stream_avl); | |
8a5fc748 | 3738 | nvlist_free(stream_nv); |
34dc7c2f BB |
3739 | if (softerr) |
3740 | error = -2; | |
3741 | if (anyerr) | |
3742 | error = -1; | |
3743 | return (error); | |
3744 | } | |
3745 | ||
428870ff BB |
3746 | static void |
3747 | trunc_prop_errs(int truncated) | |
3748 | { | |
3749 | ASSERT(truncated != 0); | |
3750 | ||
3751 | if (truncated == 1) | |
3752 | (void) fprintf(stderr, dgettext(TEXT_DOMAIN, | |
3753 | "1 more property could not be set\n")); | |
3754 | else | |
3755 | (void) fprintf(stderr, dgettext(TEXT_DOMAIN, | |
3756 | "%d more properties could not be set\n"), truncated); | |
3757 | } | |
3758 | ||
34dc7c2f BB |
3759 | static int |
3760 | recv_skip(libzfs_handle_t *hdl, int fd, boolean_t byteswap) | |
3761 | { | |
3762 | dmu_replay_record_t *drr; | |
f1512ee6 | 3763 | void *buf = zfs_alloc(hdl, SPA_MAXBLOCKSIZE); |
870e7a52 | 3764 | uint64_t payload_size; |
428870ff BB |
3765 | char errbuf[1024]; |
3766 | ||
3767 | (void) snprintf(errbuf, sizeof (errbuf), dgettext(TEXT_DOMAIN, | |
870e7a52 | 3768 | "cannot receive")); |
34dc7c2f BB |
3769 | |
3770 | /* XXX would be great to use lseek if possible... */ | |
3771 | drr = buf; | |
3772 | ||
3773 | while (recv_read(hdl, fd, drr, sizeof (dmu_replay_record_t), | |
3774 | byteswap, NULL) == 0) { | |
3775 | if (byteswap) | |
3776 | drr->drr_type = BSWAP_32(drr->drr_type); | |
3777 | ||
3778 | switch (drr->drr_type) { | |
3779 | case DRR_BEGIN: | |
428870ff | 3780 | if (drr->drr_payloadlen != 0) { |
47dfff3b MA |
3781 | (void) recv_read(hdl, fd, buf, |
3782 | drr->drr_payloadlen, B_FALSE, NULL); | |
428870ff | 3783 | } |
34dc7c2f BB |
3784 | break; |
3785 | ||
3786 | case DRR_END: | |
3787 | free(buf); | |
3788 | return (0); | |
3789 | ||
3790 | case DRR_OBJECT: | |
3791 | if (byteswap) { | |
3792 | drr->drr_u.drr_object.drr_bonuslen = | |
3793 | BSWAP_32(drr->drr_u.drr_object. | |
3794 | drr_bonuslen); | |
870e7a52 TC |
3795 | drr->drr_u.drr_object.drr_raw_bonuslen = |
3796 | BSWAP_32(drr->drr_u.drr_object. | |
3797 | drr_raw_bonuslen); | |
34dc7c2f | 3798 | } |
870e7a52 TC |
3799 | |
3800 | payload_size = | |
3801 | DRR_OBJECT_PAYLOAD_SIZE(&drr->drr_u.drr_object); | |
3802 | (void) recv_read(hdl, fd, buf, payload_size, | |
34dc7c2f BB |
3803 | B_FALSE, NULL); |
3804 | break; | |
3805 | ||
3806 | case DRR_WRITE: | |
3807 | if (byteswap) { | |
2aa34383 DK |
3808 | drr->drr_u.drr_write.drr_logical_size = |
3809 | BSWAP_64( | |
3810 | drr->drr_u.drr_write.drr_logical_size); | |
3811 | drr->drr_u.drr_write.drr_compressed_size = | |
3812 | BSWAP_64( | |
3813 | drr->drr_u.drr_write.drr_compressed_size); | |
34dc7c2f | 3814 | } |
870e7a52 | 3815 | payload_size = |
2aa34383 | 3816 | DRR_WRITE_PAYLOAD_SIZE(&drr->drr_u.drr_write); |
7a6c12fd | 3817 | assert(payload_size <= SPA_MAXBLOCKSIZE); |
34dc7c2f | 3818 | (void) recv_read(hdl, fd, buf, |
2aa34383 | 3819 | payload_size, B_FALSE, NULL); |
34dc7c2f | 3820 | break; |
428870ff BB |
3821 | case DRR_SPILL: |
3822 | if (byteswap) { | |
9f8026c8 | 3823 | drr->drr_u.drr_spill.drr_length = |
428870ff | 3824 | BSWAP_64(drr->drr_u.drr_spill.drr_length); |
870e7a52 TC |
3825 | drr->drr_u.drr_spill.drr_compressed_size = |
3826 | BSWAP_64(drr->drr_u.drr_spill. | |
3827 | drr_compressed_size); | |
428870ff | 3828 | } |
870e7a52 TC |
3829 | |
3830 | payload_size = | |
3831 | DRR_SPILL_PAYLOAD_SIZE(&drr->drr_u.drr_spill); | |
3832 | (void) recv_read(hdl, fd, buf, payload_size, | |
3833 | B_FALSE, NULL); | |
428870ff | 3834 | break; |
9b67f605 MA |
3835 | case DRR_WRITE_EMBEDDED: |
3836 | if (byteswap) { | |
3837 | drr->drr_u.drr_write_embedded.drr_psize = | |
3838 | BSWAP_32(drr->drr_u.drr_write_embedded. | |
3839 | drr_psize); | |
3840 | } | |
3841 | (void) recv_read(hdl, fd, buf, | |
3842 | P2ROUNDUP(drr->drr_u.drr_write_embedded.drr_psize, | |
3843 | 8), B_FALSE, NULL); | |
3844 | break; | |
30af21b0 | 3845 | case DRR_OBJECT_RANGE: |
428870ff | 3846 | case DRR_WRITE_BYREF: |
34dc7c2f BB |
3847 | case DRR_FREEOBJECTS: |
3848 | case DRR_FREE: | |
3849 | break; | |
3850 | ||
3851 | default: | |
428870ff BB |
3852 | zfs_error_aux(hdl, dgettext(TEXT_DOMAIN, |
3853 | "invalid record type")); | |
fad5fb01 | 3854 | free(buf); |
428870ff | 3855 | return (zfs_error(hdl, EZFS_BADSTREAM, errbuf)); |
34dc7c2f BB |
3856 | } |
3857 | } | |
3858 | ||
3859 | free(buf); | |
3860 | return (-1); | |
3861 | } | |
3862 | ||
47dfff3b MA |
3863 | static void |
3864 | recv_ecksum_set_aux(libzfs_handle_t *hdl, const char *target_snap, | |
7145123b | 3865 | boolean_t resumable, boolean_t checksum) |
47dfff3b | 3866 | { |
eca7b760 | 3867 | char target_fs[ZFS_MAX_DATASET_NAME_LEN]; |
47dfff3b | 3868 | |
7145123b PD |
3869 | zfs_error_aux(hdl, dgettext(TEXT_DOMAIN, (checksum ? |
3870 | "checksum mismatch" : "incomplete stream"))); | |
47dfff3b MA |
3871 | |
3872 | if (!resumable) | |
3873 | return; | |
3874 | (void) strlcpy(target_fs, target_snap, sizeof (target_fs)); | |
3875 | *strchr(target_fs, '@') = '\0'; | |
3876 | zfs_handle_t *zhp = zfs_open(hdl, target_fs, | |
3877 | ZFS_TYPE_FILESYSTEM | ZFS_TYPE_VOLUME); | |
3878 | if (zhp == NULL) | |
3879 | return; | |
3880 | ||
3881 | char token_buf[ZFS_MAXPROPLEN]; | |
3882 | int error = zfs_prop_get(zhp, ZFS_PROP_RECEIVE_RESUME_TOKEN, | |
3883 | token_buf, sizeof (token_buf), | |
3884 | NULL, NULL, 0, B_TRUE); | |
3885 | if (error == 0) { | |
3886 | zfs_error_aux(hdl, dgettext(TEXT_DOMAIN, | |
3887 | "checksum mismatch or incomplete stream.\n" | |
3888 | "Partially received snapshot is saved.\n" | |
3889 | "A resuming stream can be generated on the sending " | |
3890 | "system by running:\n" | |
3891 | " zfs send -t %s"), | |
3892 | token_buf); | |
3893 | } | |
3894 | zfs_close(zhp); | |
3895 | } | |
3896 | ||
a3eeab2d | 3897 | /* |
3898 | * Prepare a new nvlist of properties that are to override (-o) or be excluded | |
3899 | * (-x) from the received dataset | |
3900 | * recvprops: received properties from the send stream | |
3901 | * cmdprops: raw input properties from command line | |
3902 | * origprops: properties, both locally-set and received, currently set on the | |
3903 | * target dataset if it exists, NULL otherwise. | |
3904 | * oxprops: valid output override (-o) and excluded (-x) properties | |
3905 | */ | |
3906 | static int | |
d9c460a0 TC |
3907 | zfs_setup_cmdline_props(libzfs_handle_t *hdl, zfs_type_t type, |
3908 | char *fsname, boolean_t zoned, boolean_t recursive, boolean_t newfs, | |
3909 | boolean_t raw, boolean_t toplevel, nvlist_t *recvprops, nvlist_t *cmdprops, | |
3910 | nvlist_t *origprops, nvlist_t **oxprops, uint8_t **wkeydata_out, | |
3911 | uint_t *wkeylen_out, const char *errbuf) | |
a3eeab2d | 3912 | { |
3913 | nvpair_t *nvp; | |
3914 | nvlist_t *oprops, *voprops; | |
3915 | zfs_handle_t *zhp = NULL; | |
3916 | zpool_handle_t *zpool_hdl = NULL; | |
d9c460a0 | 3917 | char *cp; |
a3eeab2d | 3918 | int ret = 0; |
d9c460a0 | 3919 | char namebuf[ZFS_MAX_DATASET_NAME_LEN]; |
a3eeab2d | 3920 | |
3921 | if (nvlist_empty(cmdprops)) | |
3922 | return (0); /* No properties to override or exclude */ | |
3923 | ||
3924 | *oxprops = fnvlist_alloc(); | |
3925 | oprops = fnvlist_alloc(); | |
3926 | ||
d9c460a0 TC |
3927 | strlcpy(namebuf, fsname, ZFS_MAX_DATASET_NAME_LEN); |
3928 | ||
3929 | /* | |
3930 | * Get our dataset handle. The target dataset may not exist yet. | |
3931 | */ | |
3932 | if (zfs_dataset_exists(hdl, namebuf, ZFS_TYPE_DATASET)) { | |
3933 | zhp = zfs_open(hdl, namebuf, ZFS_TYPE_DATASET); | |
3934 | if (zhp == NULL) { | |
3935 | ret = -1; | |
3936 | goto error; | |
3937 | } | |
3938 | } | |
3939 | ||
3940 | /* open the zpool handle */ | |
3941 | cp = strchr(namebuf, '/'); | |
3942 | if (cp != NULL) | |
3943 | *cp = '\0'; | |
3944 | zpool_hdl = zpool_open(hdl, namebuf); | |
3945 | if (zpool_hdl == NULL) { | |
3946 | ret = -1; | |
3947 | goto error; | |
3948 | } | |
3949 | ||
3950 | /* restore namebuf to match fsname for later use */ | |
3951 | if (cp != NULL) | |
3952 | *cp = '/'; | |
3953 | ||
a3eeab2d | 3954 | /* |
3955 | * first iteration: process excluded (-x) properties now and gather | |
3956 | * added (-o) properties to be later processed by zfs_valid_proplist() | |
3957 | */ | |
3958 | nvp = NULL; | |
3959 | while ((nvp = nvlist_next_nvpair(cmdprops, nvp)) != NULL) { | |
3960 | const char *name = nvpair_name(nvp); | |
3961 | zfs_prop_t prop = zfs_name_to_prop(name); | |
3962 | ||
3963 | /* "origin" is processed separately, don't handle it here */ | |
3964 | if (prop == ZFS_PROP_ORIGIN) | |
3965 | continue; | |
3966 | ||
3967 | /* | |
3968 | * we're trying to override or exclude a property that does not | |
3969 | * make sense for this type of dataset, but we don't want to | |
3970 | * fail if the receive is recursive: this comes in handy when | |
3971 | * the send stream contains, for instance, a child ZVOL and | |
3972 | * we're trying to receive it with "-o atime=on" | |
3973 | */ | |
3974 | if (!zfs_prop_valid_for_type(prop, type, B_FALSE) && | |
3975 | !zfs_prop_user(name)) { | |
3976 | if (recursive) | |
3977 | continue; | |
3978 | zfs_error_aux(hdl, dgettext(TEXT_DOMAIN, | |
3979 | "property '%s' does not apply to datasets of this " | |
3980 | "type"), name); | |
3981 | ret = zfs_error(hdl, EZFS_BADPROP, errbuf); | |
3982 | goto error; | |
3983 | } | |
3984 | ||
d9c460a0 TC |
3985 | /* raw streams can't override encryption properties */ |
3986 | if ((zfs_prop_encryption_key_param(prop) || | |
b4238327 | 3987 | prop == ZFS_PROP_ENCRYPTION) && raw) { |
d9c460a0 TC |
3988 | zfs_error_aux(hdl, dgettext(TEXT_DOMAIN, |
3989 | "encryption property '%s' cannot " | |
b4238327 TC |
3990 | "be set or excluded for raw streams."), name); |
3991 | ret = zfs_error(hdl, EZFS_BADPROP, errbuf); | |
3992 | goto error; | |
3993 | } | |
3994 | ||
3995 | /* incremental streams can only exclude encryption properties */ | |
3996 | if ((zfs_prop_encryption_key_param(prop) || | |
3997 | prop == ZFS_PROP_ENCRYPTION) && !newfs && | |
3998 | nvpair_type(nvp) != DATA_TYPE_BOOLEAN) { | |
3999 | zfs_error_aux(hdl, dgettext(TEXT_DOMAIN, | |
4000 | "encryption property '%s' cannot " | |
4001 | "be set for incremental streams."), name); | |
d9c460a0 TC |
4002 | ret = zfs_error(hdl, EZFS_BADPROP, errbuf); |
4003 | goto error; | |
4004 | } | |
4005 | ||
a3eeab2d | 4006 | switch (nvpair_type(nvp)) { |
4007 | case DATA_TYPE_BOOLEAN: /* -x property */ | |
4008 | /* | |
4009 | * DATA_TYPE_BOOLEAN is the way we're asked to "exclude" | |
4010 | * a property: this is done by forcing an explicit | |
4011 | * inherit on the destination so the effective value is | |
4012 | * not the one we received from the send stream. | |
4013 | * We do this only if the property is not already | |
4014 | * locally-set, in which case its value will take | |
4015 | * priority over the received anyway. | |
4016 | */ | |
4017 | if (nvlist_exists(origprops, name)) { | |
4018 | nvlist_t *attrs; | |
b4238327 | 4019 | char *source = NULL; |
a3eeab2d | 4020 | |
4021 | attrs = fnvlist_lookup_nvlist(origprops, name); | |
b4238327 TC |
4022 | if (nvlist_lookup_string(attrs, |
4023 | ZPROP_SOURCE, &source) == 0 && | |
4024 | strcmp(source, ZPROP_SOURCE_VAL_RECVD) != 0) | |
a3eeab2d | 4025 | continue; |
4026 | } | |
4027 | /* | |
4028 | * We can't force an explicit inherit on non-inheritable | |
4029 | * properties: if we're asked to exclude this kind of | |
4030 | * values we remove them from "recvprops" input nvlist. | |
4031 | */ | |
4032 | if (!zfs_prop_inheritable(prop) && | |
4033 | !zfs_prop_user(name) && /* can be inherited too */ | |
4034 | nvlist_exists(recvprops, name)) | |
4035 | fnvlist_remove(recvprops, name); | |
4036 | else | |
4037 | fnvlist_add_nvpair(*oxprops, nvp); | |
4038 | break; | |
4039 | case DATA_TYPE_STRING: /* -o property=value */ | |
4040 | fnvlist_add_nvpair(oprops, nvp); | |
4041 | break; | |
4042 | default: | |
4043 | zfs_error_aux(hdl, dgettext(TEXT_DOMAIN, | |
4044 | "property '%s' must be a string or boolean"), name); | |
4045 | ret = zfs_error(hdl, EZFS_BADPROP, errbuf); | |
4046 | goto error; | |
4047 | } | |
4048 | } | |
4049 | ||
4050 | if (toplevel) { | |
4051 | /* convert override strings properties to native */ | |
4052 | if ((voprops = zfs_valid_proplist(hdl, ZFS_TYPE_DATASET, | |
b5256303 | 4053 | oprops, zoned, zhp, zpool_hdl, B_FALSE, errbuf)) == NULL) { |
a3eeab2d | 4054 | ret = zfs_error(hdl, EZFS_BADPROP, errbuf); |
4055 | goto error; | |
4056 | } | |
4057 | ||
d9c460a0 TC |
4058 | /* |
4059 | * zfs_crypto_create() requires the parent name. Get it | |
4060 | * by truncating the fsname copy stored in namebuf. | |
4061 | */ | |
4062 | cp = strrchr(namebuf, '/'); | |
4063 | if (cp != NULL) | |
4064 | *cp = '\0'; | |
4065 | ||
4066 | if (!raw && zfs_crypto_create(hdl, namebuf, voprops, NULL, | |
4067 | B_FALSE, wkeydata_out, wkeylen_out) != 0) { | |
4068 | fnvlist_free(voprops); | |
4069 | ret = zfs_error(hdl, EZFS_CRYPTOFAILED, errbuf); | |
4070 | goto error; | |
4071 | } | |
4072 | ||
a3eeab2d | 4073 | /* second pass: process "-o" properties */ |
4074 | fnvlist_merge(*oxprops, voprops); | |
4075 | fnvlist_free(voprops); | |
4076 | } else { | |
4077 | /* override props on child dataset are inherited */ | |
4078 | nvp = NULL; | |
4079 | while ((nvp = nvlist_next_nvpair(oprops, nvp)) != NULL) { | |
4080 | const char *name = nvpair_name(nvp); | |
4081 | fnvlist_add_boolean(*oxprops, name); | |
4082 | } | |
4083 | } | |
4084 | ||
4085 | error: | |
d9c460a0 TC |
4086 | if (zhp != NULL) |
4087 | zfs_close(zhp); | |
4088 | if (zpool_hdl != NULL) | |
4089 | zpool_close(zpool_hdl); | |
a3eeab2d | 4090 | fnvlist_free(oprops); |
4091 | return (ret); | |
4092 | } | |
4093 | ||
34dc7c2f BB |
4094 | /* |
4095 | * Restores a backup of tosnap from the file descriptor specified by infd. | |
4096 | */ | |
4097 | static int | |
4098 | zfs_receive_one(libzfs_handle_t *hdl, int infd, const char *tosnap, | |
fcff0f35 PD |
4099 | const char *originsnap, recvflags_t *flags, dmu_replay_record_t *drr, |
4100 | dmu_replay_record_t *drr_noswap, const char *sendfs, nvlist_t *stream_nv, | |
196bee4c MA |
4101 | avl_tree_t *stream_avl, char **top_zfs, |
4102 | const char *finalsnap, nvlist_t *cmdprops) | |
34dc7c2f | 4103 | { |
34dc7c2f | 4104 | time_t begin_time; |
428870ff | 4105 | int ioctl_err, ioctl_errno, err; |
34dc7c2f BB |
4106 | char *cp; |
4107 | struct drr_begin *drrb = &drr->drr_u.drr_begin; | |
4108 | char errbuf[1024]; | |
428870ff | 4109 | const char *chopprefix; |
34dc7c2f BB |
4110 | boolean_t newfs = B_FALSE; |
4111 | boolean_t stream_wantsnewfs; | |
43e52edd BB |
4112 | boolean_t newprops = B_FALSE; |
4113 | uint64_t read_bytes = 0; | |
4114 | uint64_t errflags = 0; | |
34dc7c2f BB |
4115 | uint64_t parent_snapguid = 0; |
4116 | prop_changelist_t *clp = NULL; | |
b128c09f | 4117 | nvlist_t *snapprops_nvlist = NULL; |
9c5e88b1 | 4118 | nvlist_t *snapholds_nvlist = NULL; |
428870ff | 4119 | zprop_errflags_t prop_errflags; |
43e52edd | 4120 | nvlist_t *prop_errors = NULL; |
428870ff | 4121 | boolean_t recursive; |
671c9354 | 4122 | char *snapname = NULL; |
43e52edd BB |
4123 | char destsnap[MAXPATHLEN * 2]; |
4124 | char origin[MAXNAMELEN]; | |
4125 | char name[MAXPATHLEN]; | |
b5256303 | 4126 | char tmp_keylocation[MAXNAMELEN]; |
a3eeab2d | 4127 | nvlist_t *rcvprops = NULL; /* props received from the send stream */ |
4128 | nvlist_t *oxprops = NULL; /* override (-o) and exclude (-x) props */ | |
4129 | nvlist_t *origprops = NULL; /* original props (if destination exists) */ | |
4130 | zfs_type_t type; | |
bee7e4ff | 4131 | boolean_t toplevel = B_FALSE; |
a3eeab2d | 4132 | boolean_t zoned = B_FALSE; |
c03f0470 | 4133 | boolean_t hastoken = B_FALSE; |
30af21b0 | 4134 | boolean_t redacted; |
d9c460a0 TC |
4135 | uint8_t *wkeydata = NULL; |
4136 | uint_t wkeylen = 0; | |
34dc7c2f BB |
4137 | |
4138 | begin_time = time(NULL); | |
43e52edd | 4139 | bzero(origin, MAXNAMELEN); |
b5256303 | 4140 | bzero(tmp_keylocation, MAXNAMELEN); |
34dc7c2f BB |
4141 | |
4142 | (void) snprintf(errbuf, sizeof (errbuf), dgettext(TEXT_DOMAIN, | |
4143 | "cannot receive")); | |
4144 | ||
428870ff BB |
4145 | recursive = (nvlist_lookup_boolean(stream_nv, "not_recursive") == |
4146 | ENOENT); | |
4147 | ||
9c5e88b1 PZ |
4148 | /* Did the user request holds be skipped via zfs recv -k? */ |
4149 | boolean_t holds = flags->holds && !flags->skipholds; | |
4150 | ||
34dc7c2f | 4151 | if (stream_avl != NULL) { |
b5256303 | 4152 | char *keylocation = NULL; |
48f783de | 4153 | nvlist_t *lookup = NULL; |
b128c09f BB |
4154 | nvlist_t *fs = fsavl_find(stream_avl, drrb->drr_toguid, |
4155 | &snapname); | |
34dc7c2f BB |
4156 | |
4157 | (void) nvlist_lookup_uint64(fs, "parentfromsnap", | |
4158 | &parent_snapguid); | |
a3eeab2d | 4159 | err = nvlist_lookup_nvlist(fs, "props", &rcvprops); |
43e52edd | 4160 | if (err) { |
a3eeab2d | 4161 | VERIFY(0 == nvlist_alloc(&rcvprops, NV_UNIQUE_NAME, 0)); |
43e52edd BB |
4162 | newprops = B_TRUE; |
4163 | } | |
34dc7c2f | 4164 | |
b5256303 TC |
4165 | /* |
4166 | * The keylocation property may only be set on encryption roots, | |
4167 | * but this dataset might not become an encryption root until | |
83472fab | 4168 | * recv_fix_encryption_hierarchy() is called. That function |
b5256303 TC |
4169 | * will fixup the keylocation anyway, so we temporarily unset |
4170 | * the keylocation for now to avoid any errors from the receive | |
4171 | * ioctl. | |
4172 | */ | |
4173 | err = nvlist_lookup_string(rcvprops, | |
4174 | zfs_prop_to_name(ZFS_PROP_KEYLOCATION), &keylocation); | |
4175 | if (err == 0) { | |
4176 | strcpy(tmp_keylocation, keylocation); | |
4177 | (void) nvlist_remove_all(rcvprops, | |
4178 | zfs_prop_to_name(ZFS_PROP_KEYLOCATION)); | |
4179 | } | |
4180 | ||
330d06f9 | 4181 | if (flags->canmountoff) { |
a3eeab2d | 4182 | VERIFY(0 == nvlist_add_uint64(rcvprops, |
34dc7c2f | 4183 | zfs_prop_to_name(ZFS_PROP_CANMOUNT), 0)); |
9c5e88b1 PZ |
4184 | } else if (newprops) { /* nothing in rcvprops, eliminate it */ |
4185 | nvlist_free(rcvprops); | |
4186 | rcvprops = NULL; | |
4187 | newprops = B_FALSE; | |
34dc7c2f | 4188 | } |
48f783de | 4189 | if (0 == nvlist_lookup_nvlist(fs, "snapprops", &lookup)) { |
4190 | VERIFY(0 == nvlist_lookup_nvlist(lookup, | |
4191 | snapname, &snapprops_nvlist)); | |
4192 | } | |
9c5e88b1 PZ |
4193 | if (holds) { |
4194 | if (0 == nvlist_lookup_nvlist(fs, "snapholds", | |
4195 | &lookup)) { | |
4196 | VERIFY(0 == nvlist_lookup_nvlist(lookup, | |
4197 | snapname, &snapholds_nvlist)); | |
4198 | } | |
4199 | } | |
34dc7c2f BB |
4200 | } |
4201 | ||
428870ff BB |
4202 | cp = NULL; |
4203 | ||
34dc7c2f BB |
4204 | /* |
4205 | * Determine how much of the snapshot name stored in the stream | |
4206 | * we are going to tack on to the name they specified on the | |
4207 | * command line, and how much we are going to chop off. | |
4208 | * | |
4209 | * If they specified a snapshot, chop the entire name stored in | |
4210 | * the stream. | |
4211 | */ | |
330d06f9 | 4212 | if (flags->istail) { |
428870ff BB |
4213 | /* |
4214 | * A filesystem was specified with -e. We want to tack on only | |
4215 | * the tail of the sent snapshot path. | |
4216 | */ | |
4217 | if (strchr(tosnap, '@')) { | |
4218 | zfs_error_aux(hdl, dgettext(TEXT_DOMAIN, "invalid " | |
4219 | "argument - snapshot not allowed with -e")); | |
43e52edd BB |
4220 | err = zfs_error(hdl, EZFS_INVALIDNAME, errbuf); |
4221 | goto out; | |
428870ff BB |
4222 | } |
4223 | ||
4224 | chopprefix = strrchr(sendfs, '/'); | |
4225 | ||
4226 | if (chopprefix == NULL) { | |
4227 | /* | |
4228 | * The tail is the poolname, so we need to | |
4229 | * prepend a path separator. | |
4230 | */ | |
4231 | int len = strlen(drrb->drr_toname); | |
4232 | cp = malloc(len + 2); | |
4233 | cp[0] = '/'; | |
4234 | (void) strcpy(&cp[1], drrb->drr_toname); | |
4235 | chopprefix = cp; | |
4236 | } else { | |
4237 | chopprefix = drrb->drr_toname + (chopprefix - sendfs); | |
4238 | } | |
330d06f9 | 4239 | } else if (flags->isprefix) { |
34dc7c2f | 4240 | /* |
428870ff BB |
4241 | * A filesystem was specified with -d. We want to tack on |
4242 | * everything but the first element of the sent snapshot path | |
4243 | * (all but the pool name). | |
34dc7c2f BB |
4244 | */ |
4245 | if (strchr(tosnap, '@')) { | |
4246 | zfs_error_aux(hdl, dgettext(TEXT_DOMAIN, "invalid " | |
4247 | "argument - snapshot not allowed with -d")); | |
43e52edd BB |
4248 | err = zfs_error(hdl, EZFS_INVALIDNAME, errbuf); |
4249 | goto out; | |
34dc7c2f | 4250 | } |
428870ff BB |
4251 | |
4252 | chopprefix = strchr(drrb->drr_toname, '/'); | |
4253 | if (chopprefix == NULL) | |
4254 | chopprefix = strchr(drrb->drr_toname, '@'); | |
34dc7c2f BB |
4255 | } else if (strchr(tosnap, '@') == NULL) { |
4256 | /* | |
428870ff BB |
4257 | * If a filesystem was specified without -d or -e, we want to |
4258 | * tack on everything after the fs specified by 'zfs send'. | |
34dc7c2f | 4259 | */ |
428870ff BB |
4260 | chopprefix = drrb->drr_toname + strlen(sendfs); |
4261 | } else { | |
4262 | /* A snapshot was specified as an exact path (no -d or -e). */ | |
4263 | if (recursive) { | |
4264 | zfs_error_aux(hdl, dgettext(TEXT_DOMAIN, | |
4265 | "cannot specify snapshot name for multi-snapshot " | |
4266 | "stream")); | |
43e52edd BB |
4267 | err = zfs_error(hdl, EZFS_BADSTREAM, errbuf); |
4268 | goto out; | |
428870ff BB |
4269 | } |
4270 | chopprefix = drrb->drr_toname + strlen(drrb->drr_toname); | |
34dc7c2f | 4271 | } |
428870ff BB |
4272 | |
4273 | ASSERT(strstr(drrb->drr_toname, sendfs) == drrb->drr_toname); | |
bdbd5477 | 4274 | ASSERT(chopprefix > drrb->drr_toname || strchr(sendfs, '/') == NULL); |
4275 | ASSERT(chopprefix <= drrb->drr_toname + strlen(drrb->drr_toname) || | |
4276 | strchr(sendfs, '/') == NULL); | |
428870ff BB |
4277 | ASSERT(chopprefix[0] == '/' || chopprefix[0] == '@' || |
4278 | chopprefix[0] == '\0'); | |
34dc7c2f BB |
4279 | |
4280 | /* | |
43e52edd | 4281 | * Determine name of destination snapshot. |
34dc7c2f | 4282 | */ |
45cb520b | 4283 | (void) strlcpy(destsnap, tosnap, sizeof (destsnap)); |
43e52edd | 4284 | (void) strlcat(destsnap, chopprefix, sizeof (destsnap)); |
428870ff | 4285 | free(cp); |
43e52edd BB |
4286 | if (!zfs_name_valid(destsnap, ZFS_TYPE_SNAPSHOT)) { |
4287 | err = zfs_error(hdl, EZFS_INVALIDNAME, errbuf); | |
4288 | goto out; | |
34dc7c2f BB |
4289 | } |
4290 | ||
4291 | /* | |
43e52edd | 4292 | * Determine the name of the origin snapshot. |
34dc7c2f | 4293 | */ |
160af771 | 4294 | if (originsnap) { |
21a4f5cc | 4295 | (void) strlcpy(origin, originsnap, sizeof (origin)); |
160af771 GM |
4296 | if (flags->verbose) |
4297 | (void) printf("using provided clone origin %s\n", | |
4298 | origin); | |
4299 | } else if (drrb->drr_flags & DRR_FLAG_CLONE) { | |
43e52edd BB |
4300 | if (guid_to_name(hdl, destsnap, |
4301 | drrb->drr_fromguid, B_FALSE, origin) != 0) { | |
34dc7c2f BB |
4302 | zfs_error_aux(hdl, dgettext(TEXT_DOMAIN, |
4303 | "local origin for clone %s does not exist"), | |
43e52edd BB |
4304 | destsnap); |
4305 | err = zfs_error(hdl, EZFS_NOENT, errbuf); | |
4306 | goto out; | |
34dc7c2f | 4307 | } |
330d06f9 | 4308 | if (flags->verbose) |
43e52edd | 4309 | (void) printf("found clone origin %s\n", origin); |
34dc7c2f BB |
4310 | } |
4311 | ||
196bee4c | 4312 | if ((DMU_GET_FEATUREFLAGS(drrb->drr_versioninfo) & |
652bdc9b MA |
4313 | DMU_BACKUP_FEATURE_DEDUP)) { |
4314 | (void) fprintf(stderr, | |
196bee4c MA |
4315 | gettext("ERROR: \"zfs receive\" no longer supports " |
4316 | "deduplicated send streams. Use\n" | |
4317 | "the \"zstream redup\" command to convert this stream " | |
4318 | "to a regular,\n" | |
4319 | "non-deduplicated stream.\n")); | |
4320 | err = zfs_error(hdl, EZFS_NOTSUP, errbuf); | |
4321 | goto out; | |
652bdc9b MA |
4322 | } |
4323 | ||
47dfff3b MA |
4324 | boolean_t resuming = DMU_GET_FEATUREFLAGS(drrb->drr_versioninfo) & |
4325 | DMU_BACKUP_FEATURE_RESUMING; | |
b5256303 TC |
4326 | boolean_t raw = DMU_GET_FEATUREFLAGS(drrb->drr_versioninfo) & |
4327 | DMU_BACKUP_FEATURE_RAW; | |
9b840763 TC |
4328 | boolean_t embedded = DMU_GET_FEATUREFLAGS(drrb->drr_versioninfo) & |
4329 | DMU_BACKUP_FEATURE_EMBED_DATA; | |
b8864a23 | 4330 | stream_wantsnewfs = (drrb->drr_fromguid == 0 || |
47dfff3b | 4331 | (drrb->drr_flags & DRR_FLAG_CLONE) || originsnap) && !resuming; |
34dc7c2f BB |
4332 | |
4333 | if (stream_wantsnewfs) { | |
4334 | /* | |
4335 | * if the parent fs does not exist, look for it based on | |
4336 | * the parent snap GUID | |
4337 | */ | |
4338 | (void) snprintf(errbuf, sizeof (errbuf), dgettext(TEXT_DOMAIN, | |
4339 | "cannot receive new filesystem stream")); | |
4340 | ||
43e52edd BB |
4341 | (void) strcpy(name, destsnap); |
4342 | cp = strrchr(name, '/'); | |
34dc7c2f BB |
4343 | if (cp) |
4344 | *cp = '\0'; | |
4345 | if (cp && | |
43e52edd | 4346 | !zfs_dataset_exists(hdl, name, ZFS_TYPE_DATASET)) { |
eca7b760 | 4347 | char suffix[ZFS_MAX_DATASET_NAME_LEN]; |
43e52edd BB |
4348 | (void) strcpy(suffix, strrchr(destsnap, '/')); |
4349 | if (guid_to_name(hdl, name, parent_snapguid, | |
4350 | B_FALSE, destsnap) == 0) { | |
4351 | *strchr(destsnap, '@') = '\0'; | |
4352 | (void) strcat(destsnap, suffix); | |
34dc7c2f BB |
4353 | } |
4354 | } | |
4355 | } else { | |
4356 | /* | |
ebeb6f23 AG |
4357 | * If the fs does not exist, look for it based on the |
4358 | * fromsnap GUID. | |
34dc7c2f | 4359 | */ |
ebeb6f23 AG |
4360 | if (resuming) { |
4361 | (void) snprintf(errbuf, sizeof (errbuf), | |
4362 | dgettext(TEXT_DOMAIN, | |
4363 | "cannot receive resume stream")); | |
4364 | } else { | |
4365 | (void) snprintf(errbuf, sizeof (errbuf), | |
4366 | dgettext(TEXT_DOMAIN, | |
4367 | "cannot receive incremental stream")); | |
4368 | } | |
34dc7c2f | 4369 | |
43e52edd BB |
4370 | (void) strcpy(name, destsnap); |
4371 | *strchr(name, '@') = '\0'; | |
34dc7c2f | 4372 | |
428870ff BB |
4373 | /* |
4374 | * If the exact receive path was specified and this is the | |
4375 | * topmost path in the stream, then if the fs does not exist we | |
4376 | * should look no further. | |
4377 | */ | |
330d06f9 | 4378 | if ((flags->isprefix || (*(chopprefix = drrb->drr_toname + |
428870ff | 4379 | strlen(sendfs)) != '\0' && *chopprefix != '@')) && |
43e52edd | 4380 | !zfs_dataset_exists(hdl, name, ZFS_TYPE_DATASET)) { |
eca7b760 | 4381 | char snap[ZFS_MAX_DATASET_NAME_LEN]; |
43e52edd BB |
4382 | (void) strcpy(snap, strchr(destsnap, '@')); |
4383 | if (guid_to_name(hdl, name, drrb->drr_fromguid, | |
4384 | B_FALSE, destsnap) == 0) { | |
4385 | *strchr(destsnap, '@') = '\0'; | |
4386 | (void) strcat(destsnap, snap); | |
34dc7c2f BB |
4387 | } |
4388 | } | |
4389 | } | |
4390 | ||
43e52edd BB |
4391 | (void) strcpy(name, destsnap); |
4392 | *strchr(name, '@') = '\0'; | |
34dc7c2f | 4393 | |
30af21b0 PD |
4394 | redacted = DMU_GET_FEATUREFLAGS(drrb->drr_versioninfo) & |
4395 | DMU_BACKUP_FEATURE_REDACTED; | |
4396 | ||
43e52edd BB |
4397 | if (zfs_dataset_exists(hdl, name, ZFS_TYPE_DATASET)) { |
4398 | zfs_cmd_t zc = {"\0"}; | |
34dc7c2f | 4399 | zfs_handle_t *zhp; |
4a385862 | 4400 | boolean_t encrypted; |
428870ff | 4401 | |
43e52edd BB |
4402 | (void) strcpy(zc.zc_name, name); |
4403 | ||
34dc7c2f | 4404 | /* |
47dfff3b MA |
4405 | * Destination fs exists. It must be one of these cases: |
4406 | * - an incremental send stream | |
4407 | * - the stream specifies a new fs (full stream or clone) | |
4408 | * and they want us to blow away the existing fs (and | |
4409 | * have therefore specified -F and removed any snapshots) | |
4410 | * - we are resuming a failed receive. | |
34dc7c2f | 4411 | */ |
34dc7c2f | 4412 | if (stream_wantsnewfs) { |
d8d418ff | 4413 | boolean_t is_volume = drrb->drr_type == DMU_OST_ZVOL; |
330d06f9 | 4414 | if (!flags->force) { |
34dc7c2f BB |
4415 | zfs_error_aux(hdl, dgettext(TEXT_DOMAIN, |
4416 | "destination '%s' exists\n" | |
43e52edd BB |
4417 | "must specify -F to overwrite it"), name); |
4418 | err = zfs_error(hdl, EZFS_EXISTS, errbuf); | |
4419 | goto out; | |
34dc7c2f | 4420 | } |
b834b58a | 4421 | if (zfs_ioctl(hdl, ZFS_IOC_SNAPSHOT_LIST_NEXT, |
34dc7c2f | 4422 | &zc) == 0) { |
34dc7c2f BB |
4423 | zfs_error_aux(hdl, dgettext(TEXT_DOMAIN, |
4424 | "destination has snapshots (eg. %s)\n" | |
4425 | "must destroy them to overwrite it"), | |
b53cb02d | 4426 | zc.zc_name); |
43e52edd BB |
4427 | err = zfs_error(hdl, EZFS_EXISTS, errbuf); |
4428 | goto out; | |
34dc7c2f | 4429 | } |
d8d418ff | 4430 | if (is_volume && strrchr(name, '/') == NULL) { |
4431 | zfs_error_aux(hdl, dgettext(TEXT_DOMAIN, | |
4432 | "destination %s is the root dataset\n" | |
4433 | "cannot overwrite with a ZVOL"), | |
4434 | name); | |
4435 | err = zfs_error(hdl, EZFS_EXISTS, errbuf); | |
4436 | goto out; | |
4437 | } | |
4438 | if (is_volume && | |
b834b58a | 4439 | zfs_ioctl(hdl, ZFS_IOC_DATASET_LIST_NEXT, |
d8d418ff | 4440 | &zc) == 0) { |
4441 | zfs_error_aux(hdl, dgettext(TEXT_DOMAIN, | |
4442 | "destination has children (eg. %s)\n" | |
4443 | "cannot overwrite with a ZVOL"), | |
4444 | zc.zc_name); | |
4445 | err = zfs_error(hdl, EZFS_WRONG_PARENT, errbuf); | |
4446 | goto out; | |
4447 | } | |
34dc7c2f BB |
4448 | } |
4449 | ||
43e52edd | 4450 | if ((zhp = zfs_open(hdl, name, |
34dc7c2f | 4451 | ZFS_TYPE_FILESYSTEM | ZFS_TYPE_VOLUME)) == NULL) { |
43e52edd BB |
4452 | err = -1; |
4453 | goto out; | |
34dc7c2f BB |
4454 | } |
4455 | ||
4456 | if (stream_wantsnewfs && | |
4457 | zhp->zfs_dmustats.dds_origin[0]) { | |
34dc7c2f BB |
4458 | zfs_close(zhp); |
4459 | zfs_error_aux(hdl, dgettext(TEXT_DOMAIN, | |
4460 | "destination '%s' is a clone\n" | |
43e52edd BB |
4461 | "must destroy it to overwrite it"), name); |
4462 | err = zfs_error(hdl, EZFS_EXISTS, errbuf); | |
4463 | goto out; | |
34dc7c2f BB |
4464 | } |
4465 | ||
b5256303 | 4466 | /* |
4a385862 | 4467 | * Raw sends can not be performed as an incremental on top |
78595377 | 4468 | * of existing unencrypted datasets. zfs recv -F can't be |
4a385862 TC |
4469 | * used to blow away an existing encrypted filesystem. This |
4470 | * is because it would require the dsl dir to point to the | |
4471 | * new key (or lack of a key) and the old key at the same | |
4472 | * time. The -F flag may still be used for deleting | |
4473 | * intermediate snapshots that would otherwise prevent the | |
4474 | * receive from working. | |
b5256303 | 4475 | */ |
4a385862 TC |
4476 | encrypted = zfs_prop_get_int(zhp, ZFS_PROP_ENCRYPTION) != |
4477 | ZIO_CRYPT_OFF; | |
4478 | if (!stream_wantsnewfs && !encrypted && raw) { | |
b5256303 TC |
4479 | zfs_close(zhp); |
4480 | zfs_error_aux(hdl, dgettext(TEXT_DOMAIN, | |
4a385862 TC |
4481 | "cannot perform raw receive on top of " |
4482 | "existing unencrypted dataset")); | |
b5256303 TC |
4483 | err = zfs_error(hdl, EZFS_BADRESTORE, errbuf); |
4484 | goto out; | |
4485 | } | |
4486 | ||
4a385862 TC |
4487 | if (stream_wantsnewfs && flags->force && |
4488 | ((raw && !encrypted) || encrypted)) { | |
4489 | zfs_close(zhp); | |
4490 | zfs_error_aux(hdl, dgettext(TEXT_DOMAIN, | |
4491 | "zfs receive -F cannot be used to destroy an " | |
4492 | "encrypted filesystem or overwrite an " | |
4493 | "unencrypted one with an encrypted one")); | |
4494 | err = zfs_error(hdl, EZFS_BADRESTORE, errbuf); | |
4495 | goto out; | |
4496 | } | |
b5256303 | 4497 | |
330d06f9 | 4498 | if (!flags->dryrun && zhp->zfs_type == ZFS_TYPE_FILESYSTEM && |
34dc7c2f BB |
4499 | stream_wantsnewfs) { |
4500 | /* We can't do online recv in this case */ | |
a57d3d45 MZ |
4501 | clp = changelist_gather(zhp, ZFS_PROP_NAME, 0, |
4502 | flags->forceunmount ? MS_FORCE : 0); | |
34dc7c2f | 4503 | if (clp == NULL) { |
45d1cae3 | 4504 | zfs_close(zhp); |
43e52edd BB |
4505 | err = -1; |
4506 | goto out; | |
34dc7c2f BB |
4507 | } |
4508 | if (changelist_prefix(clp) != 0) { | |
4509 | changelist_free(clp); | |
45d1cae3 | 4510 | zfs_close(zhp); |
43e52edd BB |
4511 | err = -1; |
4512 | goto out; | |
34dc7c2f BB |
4513 | } |
4514 | } | |
47dfff3b MA |
4515 | |
4516 | /* | |
4517 | * If we are resuming a newfs, set newfs here so that we will | |
4518 | * mount it if the recv succeeds this time. We can tell | |
4519 | * that it was a newfs on the first recv because the fs | |
4520 | * itself will be inconsistent (if the fs existed when we | |
4521 | * did the first recv, we would have received it into | |
4522 | * .../%recv). | |
4523 | */ | |
4524 | if (resuming && zfs_prop_get_int(zhp, ZFS_PROP_INCONSISTENT)) | |
4525 | newfs = B_TRUE; | |
4526 | ||
a3eeab2d | 4527 | /* we want to know if we're zoned when validating -o|-x props */ |
4528 | zoned = zfs_prop_get_int(zhp, ZFS_PROP_ZONED); | |
4529 | ||
c03f0470 | 4530 | /* may need this info later, get it now we have zhp around */ |
4531 | if (zfs_prop_get(zhp, ZFS_PROP_RECEIVE_RESUME_TOKEN, NULL, 0, | |
4532 | NULL, NULL, 0, B_TRUE) == 0) | |
4533 | hastoken = B_TRUE; | |
4534 | ||
a3eeab2d | 4535 | /* gather existing properties on destination */ |
4536 | origprops = fnvlist_alloc(); | |
4537 | fnvlist_merge(origprops, zhp->zfs_props); | |
4538 | fnvlist_merge(origprops, zhp->zfs_user_props); | |
4539 | ||
34dc7c2f BB |
4540 | zfs_close(zhp); |
4541 | } else { | |
b5256303 TC |
4542 | zfs_handle_t *zhp; |
4543 | ||
34dc7c2f BB |
4544 | /* |
4545 | * Destination filesystem does not exist. Therefore we better | |
4546 | * be creating a new filesystem (either from a full backup, or | |
4547 | * a clone). It would therefore be invalid if the user | |
4548 | * specified only the pool name (i.e. if the destination name | |
4549 | * contained no slash character). | |
4550 | */ | |
a64f903b GN |
4551 | cp = strrchr(name, '/'); |
4552 | ||
4553 | if (!stream_wantsnewfs || cp == NULL) { | |
34dc7c2f | 4554 | zfs_error_aux(hdl, dgettext(TEXT_DOMAIN, |
43e52edd BB |
4555 | "destination '%s' does not exist"), name); |
4556 | err = zfs_error(hdl, EZFS_NOENT, errbuf); | |
4557 | goto out; | |
34dc7c2f BB |
4558 | } |
4559 | ||
4560 | /* | |
4561 | * Trim off the final dataset component so we perform the | |
4562 | * recvbackup ioctl to the filesystems's parent. | |
4563 | */ | |
4564 | *cp = '\0'; | |
4565 | ||
330d06f9 | 4566 | if (flags->isprefix && !flags->istail && !flags->dryrun && |
43e52edd BB |
4567 | create_parents(hdl, destsnap, strlen(tosnap)) != 0) { |
4568 | err = zfs_error(hdl, EZFS_BADRESTORE, errbuf); | |
4569 | goto out; | |
34dc7c2f BB |
4570 | } |
4571 | ||
d8d418ff | 4572 | /* validate parent */ |
4573 | zhp = zfs_open(hdl, name, ZFS_TYPE_DATASET); | |
4574 | if (zhp == NULL) { | |
4575 | err = zfs_error(hdl, EZFS_BADRESTORE, errbuf); | |
4576 | goto out; | |
4577 | } | |
4578 | if (zfs_get_type(zhp) != ZFS_TYPE_FILESYSTEM) { | |
4579 | zfs_error_aux(hdl, dgettext(TEXT_DOMAIN, | |
4580 | "parent '%s' is not a filesystem"), name); | |
4581 | err = zfs_error(hdl, EZFS_WRONG_PARENT, errbuf); | |
4582 | zfs_close(zhp); | |
4583 | goto out; | |
4584 | } | |
4585 | ||
d8d418ff | 4586 | zfs_close(zhp); |
b5256303 | 4587 | |
34dc7c2f | 4588 | newfs = B_TRUE; |
b5256303 | 4589 | *cp = '/'; |
34dc7c2f BB |
4590 | } |
4591 | ||
330d06f9 | 4592 | if (flags->verbose) { |
34dc7c2f | 4593 | (void) printf("%s %s stream of %s into %s\n", |
330d06f9 | 4594 | flags->dryrun ? "would receive" : "receiving", |
34dc7c2f | 4595 | drrb->drr_fromguid ? "incremental" : "full", |
43e52edd | 4596 | drrb->drr_toname, destsnap); |
34dc7c2f BB |
4597 | (void) fflush(stdout); |
4598 | } | |
4599 | ||
330d06f9 | 4600 | if (flags->dryrun) { |
870e7a52 TC |
4601 | void *buf = zfs_alloc(hdl, SPA_MAXBLOCKSIZE); |
4602 | ||
4603 | /* | |
4604 | * We have read the DRR_BEGIN record, but we have | |
4605 | * not yet read the payload. For non-dryrun sends | |
4606 | * this will be done by the kernel, so we must | |
4607 | * emulate that here, before attempting to read | |
4608 | * more records. | |
4609 | */ | |
4610 | err = recv_read(hdl, infd, buf, drr->drr_payloadlen, | |
4611 | flags->byteswap, NULL); | |
4612 | free(buf); | |
4613 | if (err != 0) | |
4614 | goto out; | |
4615 | ||
43e52edd BB |
4616 | err = recv_skip(hdl, infd, flags->byteswap); |
4617 | goto out; | |
34dc7c2f BB |
4618 | } |
4619 | ||
bb61cc31 TC |
4620 | /* |
4621 | * If this is the top-level dataset, record it so we can use it | |
4622 | * for recursive operations later. | |
4623 | */ | |
4624 | if (top_zfs != NULL && | |
4625 | (*top_zfs == NULL || strcmp(*top_zfs, name) == 0)) { | |
bee7e4ff | 4626 | toplevel = B_TRUE; |
bb61cc31 TC |
4627 | if (*top_zfs == NULL) |
4628 | *top_zfs = zfs_strdup(hdl, name); | |
4629 | } | |
4630 | ||
a3eeab2d | 4631 | if (drrb->drr_type == DMU_OST_ZVOL) { |
4632 | type = ZFS_TYPE_VOLUME; | |
4633 | } else if (drrb->drr_type == DMU_OST_ZFS) { | |
4634 | type = ZFS_TYPE_FILESYSTEM; | |
4635 | } else { | |
4636 | zfs_error_aux(hdl, dgettext(TEXT_DOMAIN, | |
4637 | "invalid record type: 0x%d"), drrb->drr_type); | |
4638 | err = zfs_error(hdl, EZFS_BADSTREAM, errbuf); | |
4639 | goto out; | |
4640 | } | |
d9c460a0 TC |
4641 | if ((err = zfs_setup_cmdline_props(hdl, type, name, zoned, recursive, |
4642 | stream_wantsnewfs, raw, toplevel, rcvprops, cmdprops, origprops, | |
4643 | &oxprops, &wkeydata, &wkeylen, errbuf)) != 0) | |
a3eeab2d | 4644 | goto out; |
4645 | ||
da689887 TC |
4646 | /* |
4647 | * When sending with properties (zfs send -p), the encryption property | |
4648 | * is not included because it is a SETONCE property and therefore | |
4649 | * treated as read only. However, we are always able to determine its | |
4650 | * value because raw sends will include it in the DRR_BDEGIN payload | |
4651 | * and non-raw sends with properties are not allowed for encrypted | |
4652 | * datasets. Therefore, if this is a non-raw properties stream, we can | |
4653 | * infer that the value should be ZIO_CRYPT_OFF and manually add that | |
4654 | * to the received properties. | |
4655 | */ | |
4656 | if (stream_wantsnewfs && !raw && rcvprops != NULL && | |
4657 | !nvlist_exists(cmdprops, zfs_prop_to_name(ZFS_PROP_ENCRYPTION))) { | |
4658 | if (oxprops == NULL) | |
4659 | oxprops = fnvlist_alloc(); | |
4660 | fnvlist_add_uint64(oxprops, | |
4661 | zfs_prop_to_name(ZFS_PROP_ENCRYPTION), ZIO_CRYPT_OFF); | |
4662 | } | |
4663 | ||
d9c460a0 TC |
4664 | err = ioctl_err = lzc_receive_with_cmdprops(destsnap, rcvprops, |
4665 | oxprops, wkeydata, wkeylen, origin, flags->force, flags->resumable, | |
196bee4c MA |
4666 | raw, infd, drr_noswap, -1, &read_bytes, &errflags, |
4667 | NULL, &prop_errors); | |
43e52edd BB |
4668 | ioctl_errno = ioctl_err; |
4669 | prop_errflags = errflags; | |
428870ff BB |
4670 | |
4671 | if (err == 0) { | |
428870ff BB |
4672 | nvpair_t *prop_err = NULL; |
4673 | ||
4674 | while ((prop_err = nvlist_next_nvpair(prop_errors, | |
4675 | prop_err)) != NULL) { | |
4676 | char tbuf[1024]; | |
4677 | zfs_prop_t prop; | |
4678 | int intval; | |
4679 | ||
4680 | prop = zfs_name_to_prop(nvpair_name(prop_err)); | |
4681 | (void) nvpair_value_int32(prop_err, &intval); | |
4682 | if (strcmp(nvpair_name(prop_err), | |
4683 | ZPROP_N_MORE_ERRORS) == 0) { | |
4684 | trunc_prop_errs(intval); | |
4685 | break; | |
671c9354 DM |
4686 | } else if (snapname == NULL || finalsnap == NULL || |
4687 | strcmp(finalsnap, snapname) == 0 || | |
4688 | strcmp(nvpair_name(prop_err), | |
4689 | zfs_prop_to_name(ZFS_PROP_REFQUOTA)) != 0) { | |
4690 | /* | |
4691 | * Skip the special case of, for example, | |
4692 | * "refquota", errors on intermediate | |
4693 | * snapshots leading up to a final one. | |
4694 | * That's why we have all of the checks above. | |
4695 | * | |
4696 | * See zfs_ioctl.c's extract_delay_props() for | |
4697 | * a list of props which can fail on | |
4698 | * intermediate snapshots, but shouldn't | |
4699 | * affect the overall receive. | |
4700 | */ | |
428870ff BB |
4701 | (void) snprintf(tbuf, sizeof (tbuf), |
4702 | dgettext(TEXT_DOMAIN, | |
4703 | "cannot receive %s property on %s"), | |
43e52edd | 4704 | nvpair_name(prop_err), name); |
428870ff BB |
4705 | zfs_setprop_error(hdl, prop, intval, tbuf); |
4706 | } | |
4707 | } | |
428870ff BB |
4708 | } |
4709 | ||
b128c09f | 4710 | if (err == 0 && snapprops_nvlist) { |
43e52edd | 4711 | zfs_cmd_t zc = {"\0"}; |
b128c09f | 4712 | |
43e52edd BB |
4713 | (void) strcpy(zc.zc_name, destsnap); |
4714 | zc.zc_cookie = B_TRUE; /* received */ | |
4715 | if (zcmd_write_src_nvlist(hdl, &zc, snapprops_nvlist) == 0) { | |
4716 | (void) zfs_ioctl(hdl, ZFS_IOC_SET_PROP, &zc); | |
4717 | zcmd_free_nvlists(&zc); | |
b128c09f BB |
4718 | } |
4719 | } | |
9c5e88b1 PZ |
4720 | if (err == 0 && snapholds_nvlist) { |
4721 | nvpair_t *pair; | |
4722 | nvlist_t *holds, *errors = NULL; | |
4723 | int cleanup_fd = -1; | |
4724 | ||
4725 | VERIFY(0 == nvlist_alloc(&holds, 0, KM_SLEEP)); | |
4726 | for (pair = nvlist_next_nvpair(snapholds_nvlist, NULL); | |
4727 | pair != NULL; | |
4728 | pair = nvlist_next_nvpair(snapholds_nvlist, pair)) { | |
4729 | VERIFY(0 == nvlist_add_string(holds, destsnap, | |
4730 | nvpair_name(pair))); | |
4731 | } | |
4732 | (void) lzc_hold(holds, cleanup_fd, &errors); | |
4733 | nvlist_free(snapholds_nvlist); | |
4734 | nvlist_free(holds); | |
4735 | } | |
b128c09f | 4736 | |
428870ff | 4737 | if (err && (ioctl_errno == ENOENT || ioctl_errno == EEXIST)) { |
34dc7c2f BB |
4738 | /* |
4739 | * It may be that this snapshot already exists, | |
4740 | * in which case we want to consume & ignore it | |
4741 | * rather than failing. | |
4742 | */ | |
4743 | avl_tree_t *local_avl; | |
4744 | nvlist_t *local_nv, *fs; | |
43e52edd | 4745 | cp = strchr(destsnap, '@'); |
34dc7c2f BB |
4746 | |
4747 | /* | |
4748 | * XXX Do this faster by just iterating over snaps in | |
4749 | * this fs. Also if zc_value does not exist, we will | |
4750 | * get a strange "does not exist" error message. | |
4751 | */ | |
4752 | *cp = '\0'; | |
b5256303 | 4753 | if (gather_nvlist(hdl, destsnap, NULL, NULL, B_FALSE, B_TRUE, |
f94b3cbf TC |
4754 | B_FALSE, B_FALSE, B_FALSE, B_FALSE, B_FALSE, B_TRUE, |
4755 | &local_nv, &local_avl) == 0) { | |
34dc7c2f BB |
4756 | *cp = '@'; |
4757 | fs = fsavl_find(local_avl, drrb->drr_toguid, NULL); | |
4758 | fsavl_destroy(local_avl); | |
4759 | nvlist_free(local_nv); | |
4760 | ||
4761 | if (fs != NULL) { | |
330d06f9 | 4762 | if (flags->verbose) { |
34dc7c2f | 4763 | (void) printf("snap %s already exists; " |
43e52edd | 4764 | "ignoring\n", destsnap); |
34dc7c2f | 4765 | } |
428870ff | 4766 | err = ioctl_err = recv_skip(hdl, infd, |
330d06f9 | 4767 | flags->byteswap); |
34dc7c2f BB |
4768 | } |
4769 | } | |
4770 | *cp = '@'; | |
4771 | } | |
4772 | ||
34dc7c2f BB |
4773 | if (ioctl_err != 0) { |
4774 | switch (ioctl_errno) { | |
4775 | case ENODEV: | |
43e52edd | 4776 | cp = strchr(destsnap, '@'); |
34dc7c2f BB |
4777 | *cp = '\0'; |
4778 | zfs_error_aux(hdl, dgettext(TEXT_DOMAIN, | |
4779 | "most recent snapshot of %s does not\n" | |
43e52edd | 4780 | "match incremental source"), destsnap); |
34dc7c2f BB |
4781 | (void) zfs_error(hdl, EZFS_BADRESTORE, errbuf); |
4782 | *cp = '@'; | |
4783 | break; | |
4784 | case ETXTBSY: | |
4785 | zfs_error_aux(hdl, dgettext(TEXT_DOMAIN, | |
4786 | "destination %s has been modified\n" | |
43e52edd | 4787 | "since most recent snapshot"), name); |
34dc7c2f BB |
4788 | (void) zfs_error(hdl, EZFS_BADRESTORE, errbuf); |
4789 | break; | |
b5256303 TC |
4790 | case EACCES: |
4791 | if (raw && stream_wantsnewfs) { | |
4792 | zfs_error_aux(hdl, dgettext(TEXT_DOMAIN, | |
4793 | "failed to create encryption key")); | |
4794 | } else if (raw && !stream_wantsnewfs) { | |
4795 | zfs_error_aux(hdl, dgettext(TEXT_DOMAIN, | |
4796 | "encryption key does not match " | |
4797 | "existing key")); | |
4798 | } else { | |
4799 | zfs_error_aux(hdl, dgettext(TEXT_DOMAIN, | |
4800 | "inherited key must be loaded")); | |
4801 | } | |
4802 | (void) zfs_error(hdl, EZFS_CRYPTOFAILED, errbuf); | |
4803 | break; | |
34dc7c2f | 4804 | case EEXIST: |
43e52edd | 4805 | cp = strchr(destsnap, '@'); |
34dc7c2f BB |
4806 | if (newfs) { |
4807 | /* it's the containing fs that exists */ | |
4808 | *cp = '\0'; | |
4809 | } | |
4810 | zfs_error_aux(hdl, dgettext(TEXT_DOMAIN, | |
4811 | "destination already exists")); | |
4812 | (void) zfs_error_fmt(hdl, EZFS_EXISTS, | |
4813 | dgettext(TEXT_DOMAIN, "cannot restore to %s"), | |
43e52edd | 4814 | destsnap); |
34dc7c2f BB |
4815 | *cp = '@'; |
4816 | break; | |
4817 | case EINVAL: | |
2ba59fa9 | 4818 | if (flags->resumable) { |
43e52edd BB |
4819 | zfs_error_aux(hdl, dgettext(TEXT_DOMAIN, |
4820 | "kernel modules must be upgraded to " | |
4821 | "receive this stream.")); | |
2ba59fa9 | 4822 | } else if (embedded && !raw) { |
9b840763 TC |
4823 | zfs_error_aux(hdl, dgettext(TEXT_DOMAIN, |
4824 | "incompatible embedded data stream " | |
4825 | "feature with encrypted receive.")); | |
2ba59fa9 | 4826 | } |
34dc7c2f BB |
4827 | (void) zfs_error(hdl, EZFS_BADSTREAM, errbuf); |
4828 | break; | |
4829 | case ECKSUM: | |
7145123b PD |
4830 | case ZFS_ERR_STREAM_TRUNCATED: |
4831 | recv_ecksum_set_aux(hdl, destsnap, flags->resumable, | |
4832 | ioctl_err == ECKSUM); | |
34dc7c2f BB |
4833 | (void) zfs_error(hdl, EZFS_BADSTREAM, errbuf); |
4834 | break; | |
7bcb7f08 MA |
4835 | case ZFS_ERR_STREAM_LARGE_BLOCK_MISMATCH: |
4836 | zfs_error_aux(hdl, dgettext(TEXT_DOMAIN, | |
4837 | "incremental send stream requires -L " | |
4838 | "(--large-block), to match previous receive.")); | |
4839 | (void) zfs_error(hdl, EZFS_BADSTREAM, errbuf); | |
4840 | break; | |
428870ff BB |
4841 | case ENOTSUP: |
4842 | zfs_error_aux(hdl, dgettext(TEXT_DOMAIN, | |
4843 | "pool must be upgraded to receive this stream.")); | |
4844 | (void) zfs_error(hdl, EZFS_BADVERSION, errbuf); | |
4845 | break; | |
4846 | case EDQUOT: | |
4847 | zfs_error_aux(hdl, dgettext(TEXT_DOMAIN, | |
c03f0470 | 4848 | "destination %s space quota exceeded."), name); |
330d06f9 | 4849 | (void) zfs_error(hdl, EZFS_NOSPC, errbuf); |
428870ff | 4850 | break; |
f00ab3f2 TC |
4851 | case ZFS_ERR_FROM_IVSET_GUID_MISSING: |
4852 | zfs_error_aux(hdl, dgettext(TEXT_DOMAIN, | |
73c25a78 | 4853 | "IV set guid missing. See errata %u at " |
a2f944a1 RM |
4854 | "https://openzfs.github.io/openzfs-docs/msg/" |
4855 | "ZFS-8000-ER."), | |
f00ab3f2 TC |
4856 | ZPOOL_ERRATA_ZOL_8308_ENCRYPTION); |
4857 | (void) zfs_error(hdl, EZFS_BADSTREAM, errbuf); | |
4858 | break; | |
4859 | case ZFS_ERR_FROM_IVSET_GUID_MISMATCH: | |
4860 | zfs_error_aux(hdl, dgettext(TEXT_DOMAIN, | |
4861 | "IV set guid mismatch. See the 'zfs receive' " | |
4862 | "man page section\n discussing the limitations " | |
4863 | "of raw encrypted send streams.")); | |
4864 | (void) zfs_error(hdl, EZFS_BADSTREAM, errbuf); | |
4865 | break; | |
caf9dd20 BB |
4866 | case ZFS_ERR_SPILL_BLOCK_FLAG_MISSING: |
4867 | zfs_error_aux(hdl, dgettext(TEXT_DOMAIN, | |
4868 | "Spill block flag missing for raw send.\n" | |
4869 | "The zfs software on the sending system must " | |
4870 | "be updated.")); | |
4871 | (void) zfs_error(hdl, EZFS_BADSTREAM, errbuf); | |
4872 | break; | |
c03f0470 | 4873 | case EBUSY: |
4874 | if (hastoken) { | |
4875 | zfs_error_aux(hdl, dgettext(TEXT_DOMAIN, | |
4876 | "destination %s contains " | |
4877 | "partially-complete state from " | |
4878 | "\"zfs receive -s\"."), name); | |
4879 | (void) zfs_error(hdl, EZFS_BUSY, errbuf); | |
4880 | break; | |
4881 | } | |
4882 | /* fallthru */ | |
34dc7c2f BB |
4883 | default: |
4884 | (void) zfs_standard_error(hdl, ioctl_errno, errbuf); | |
4885 | } | |
4886 | } | |
4887 | ||
4888 | /* | |
428870ff BB |
4889 | * Mount the target filesystem (if created). Also mount any |
4890 | * children of the target filesystem if we did a replication | |
4891 | * receive (indicated by stream_avl being non-NULL). | |
34dc7c2f | 4892 | */ |
34dc7c2f | 4893 | if (clp) { |
89d43feb GM |
4894 | if (!flags->nomount) |
4895 | err |= changelist_postfix(clp); | |
34dc7c2f BB |
4896 | changelist_free(clp); |
4897 | } | |
4898 | ||
bb61cc31 TC |
4899 | if ((newfs || stream_avl) && type == ZFS_TYPE_FILESYSTEM && !redacted) |
4900 | flags->domount = B_TRUE; | |
4901 | ||
428870ff BB |
4902 | if (prop_errflags & ZPROP_ERR_NOCLEAR) { |
4903 | (void) fprintf(stderr, dgettext(TEXT_DOMAIN, "Warning: " | |
43e52edd | 4904 | "failed to clear unreceived properties on %s"), name); |
428870ff BB |
4905 | (void) fprintf(stderr, "\n"); |
4906 | } | |
4907 | if (prop_errflags & ZPROP_ERR_NORESTORE) { | |
4908 | (void) fprintf(stderr, dgettext(TEXT_DOMAIN, "Warning: " | |
43e52edd | 4909 | "failed to restore original properties on %s"), name); |
428870ff BB |
4910 | (void) fprintf(stderr, "\n"); |
4911 | } | |
4912 | ||
43e52edd BB |
4913 | if (err || ioctl_err) { |
4914 | err = -1; | |
4915 | goto out; | |
4916 | } | |
572e2857 | 4917 | |
330d06f9 | 4918 | if (flags->verbose) { |
34dc7c2f BB |
4919 | char buf1[64]; |
4920 | char buf2[64]; | |
43e52edd | 4921 | uint64_t bytes = read_bytes; |
34dc7c2f BB |
4922 | time_t delta = time(NULL) - begin_time; |
4923 | if (delta == 0) | |
4924 | delta = 1; | |
e7fbeb60 | 4925 | zfs_nicebytes(bytes, buf1, sizeof (buf1)); |
4926 | zfs_nicebytes(bytes/delta, buf2, sizeof (buf1)); | |
34dc7c2f | 4927 | |
a1ba1209 AZ |
4928 | (void) printf("received %s stream in %lld seconds (%s/sec)\n", |
4929 | buf1, (longlong_t)delta, buf2); | |
34dc7c2f BB |
4930 | } |
4931 | ||
43e52edd BB |
4932 | err = 0; |
4933 | out: | |
4934 | if (prop_errors != NULL) | |
4935 | nvlist_free(prop_errors); | |
4936 | ||
b5256303 TC |
4937 | if (tmp_keylocation[0] != '\0') { |
4938 | VERIFY(0 == nvlist_add_string(rcvprops, | |
4939 | zfs_prop_to_name(ZFS_PROP_KEYLOCATION), tmp_keylocation)); | |
4940 | } | |
4941 | ||
43e52edd | 4942 | if (newprops) |
a3eeab2d | 4943 | nvlist_free(rcvprops); |
4944 | ||
4945 | nvlist_free(oxprops); | |
4946 | nvlist_free(origprops); | |
43e52edd BB |
4947 | |
4948 | return (err); | |
34dc7c2f BB |
4949 | } |
4950 | ||
a3eeab2d | 4951 | /* |
4952 | * Check properties we were asked to override (both -o|-x) | |
4953 | */ | |
4954 | static boolean_t | |
4955 | zfs_receive_checkprops(libzfs_handle_t *hdl, nvlist_t *props, | |
4956 | const char *errbuf) | |
4957 | { | |
4958 | nvpair_t *nvp; | |
4959 | zfs_prop_t prop; | |
4960 | const char *name; | |
4961 | ||
4962 | nvp = NULL; | |
4963 | while ((nvp = nvlist_next_nvpair(props, nvp)) != NULL) { | |
4964 | name = nvpair_name(nvp); | |
4965 | prop = zfs_name_to_prop(name); | |
4966 | ||
4967 | if (prop == ZPROP_INVAL) { | |
4968 | if (!zfs_prop_user(name)) { | |
4969 | zfs_error_aux(hdl, dgettext(TEXT_DOMAIN, | |
4970 | "invalid property '%s'"), name); | |
4971 | return (B_FALSE); | |
4972 | } | |
4973 | continue; | |
4974 | } | |
4975 | /* | |
4976 | * "origin" is readonly but is used to receive datasets as | |
4977 | * clones so we don't raise an error here | |
4978 | */ | |
4979 | if (prop == ZFS_PROP_ORIGIN) | |
4980 | continue; | |
4981 | ||
d9c460a0 TC |
4982 | /* encryption params have their own verification later */ |
4983 | if (prop == ZFS_PROP_ENCRYPTION || | |
4984 | zfs_prop_encryption_key_param(prop)) | |
4985 | continue; | |
4986 | ||
a3eeab2d | 4987 | /* |
4988 | * cannot override readonly, set-once and other specific | |
4989 | * settable properties | |
4990 | */ | |
4991 | if (zfs_prop_readonly(prop) || prop == ZFS_PROP_VERSION || | |
4992 | prop == ZFS_PROP_VOLSIZE) { | |
4993 | zfs_error_aux(hdl, dgettext(TEXT_DOMAIN, | |
4994 | "invalid property '%s'"), name); | |
4995 | return (B_FALSE); | |
4996 | } | |
4997 | } | |
4998 | ||
4999 | return (B_TRUE); | |
5000 | } | |
5001 | ||
b128c09f | 5002 | static int |
fcff0f35 PD |
5003 | zfs_receive_impl(libzfs_handle_t *hdl, const char *tosnap, |
5004 | const char *originsnap, recvflags_t *flags, int infd, const char *sendfs, | |
196bee4c MA |
5005 | nvlist_t *stream_nv, avl_tree_t *stream_avl, char **top_zfs, |
5006 | const char *finalsnap, nvlist_t *cmdprops) | |
34dc7c2f BB |
5007 | { |
5008 | int err; | |
5009 | dmu_replay_record_t drr, drr_noswap; | |
5010 | struct drr_begin *drrb = &drr.drr_u.drr_begin; | |
5011 | char errbuf[1024]; | |
2598c001 | 5012 | zio_cksum_t zcksum = { { 0 } }; |
428870ff BB |
5013 | uint64_t featureflags; |
5014 | int hdrtype; | |
34dc7c2f BB |
5015 | |
5016 | (void) snprintf(errbuf, sizeof (errbuf), dgettext(TEXT_DOMAIN, | |
5017 | "cannot receive")); | |
5018 | ||
a3eeab2d | 5019 | /* check cmdline props, raise an error if they cannot be received */ |
5020 | if (!zfs_receive_checkprops(hdl, cmdprops, errbuf)) { | |
5021 | return (zfs_error(hdl, EZFS_BADPROP, errbuf)); | |
5022 | } | |
5023 | ||
330d06f9 | 5024 | if (flags->isprefix && |
34dc7c2f BB |
5025 | !zfs_dataset_exists(hdl, tosnap, ZFS_TYPE_DATASET)) { |
5026 | zfs_error_aux(hdl, dgettext(TEXT_DOMAIN, "specified fs " | |
5027 | "(%s) does not exist"), tosnap); | |
5028 | return (zfs_error(hdl, EZFS_NOENT, errbuf)); | |
5029 | } | |
fcff0f35 PD |
5030 | if (originsnap && |
5031 | !zfs_dataset_exists(hdl, originsnap, ZFS_TYPE_DATASET)) { | |
5032 | zfs_error_aux(hdl, dgettext(TEXT_DOMAIN, "specified origin fs " | |
5033 | "(%s) does not exist"), originsnap); | |
5034 | return (zfs_error(hdl, EZFS_NOENT, errbuf)); | |
5035 | } | |
34dc7c2f BB |
5036 | |
5037 | /* read in the BEGIN record */ | |
5038 | if (0 != (err = recv_read(hdl, infd, &drr, sizeof (drr), B_FALSE, | |
5039 | &zcksum))) | |
5040 | return (err); | |
5041 | ||
5042 | if (drr.drr_type == DRR_END || drr.drr_type == BSWAP_32(DRR_END)) { | |
5043 | /* It's the double end record at the end of a package */ | |
5044 | return (ENODATA); | |
5045 | } | |
5046 | ||
5047 | /* the kernel needs the non-byteswapped begin record */ | |
5048 | drr_noswap = drr; | |
5049 | ||
330d06f9 | 5050 | flags->byteswap = B_FALSE; |
34dc7c2f BB |
5051 | if (drrb->drr_magic == BSWAP_64(DMU_BACKUP_MAGIC)) { |
5052 | /* | |
5053 | * We computed the checksum in the wrong byteorder in | |
5054 | * recv_read() above; do it again correctly. | |
5055 | */ | |
5056 | bzero(&zcksum, sizeof (zio_cksum_t)); | |
5057 | fletcher_4_incremental_byteswap(&drr, sizeof (drr), &zcksum); | |
330d06f9 | 5058 | flags->byteswap = B_TRUE; |
34dc7c2f BB |
5059 | |
5060 | drr.drr_type = BSWAP_32(drr.drr_type); | |
5061 | drr.drr_payloadlen = BSWAP_32(drr.drr_payloadlen); | |
5062 | drrb->drr_magic = BSWAP_64(drrb->drr_magic); | |
428870ff | 5063 | drrb->drr_versioninfo = BSWAP_64(drrb->drr_versioninfo); |
34dc7c2f BB |
5064 | drrb->drr_creation_time = BSWAP_64(drrb->drr_creation_time); |
5065 | drrb->drr_type = BSWAP_32(drrb->drr_type); | |
5066 | drrb->drr_flags = BSWAP_32(drrb->drr_flags); | |
5067 | drrb->drr_toguid = BSWAP_64(drrb->drr_toguid); | |
5068 | drrb->drr_fromguid = BSWAP_64(drrb->drr_fromguid); | |
5069 | } | |
5070 | ||
5071 | if (drrb->drr_magic != DMU_BACKUP_MAGIC || drr.drr_type != DRR_BEGIN) { | |
5072 | zfs_error_aux(hdl, dgettext(TEXT_DOMAIN, "invalid " | |
5073 | "stream (bad magic number)")); | |
5074 | return (zfs_error(hdl, EZFS_BADSTREAM, errbuf)); | |
5075 | } | |
5076 | ||
428870ff BB |
5077 | featureflags = DMU_GET_FEATUREFLAGS(drrb->drr_versioninfo); |
5078 | hdrtype = DMU_GET_STREAM_HDRTYPE(drrb->drr_versioninfo); | |
5079 | ||
5080 | if (!DMU_STREAM_SUPPORTED(featureflags) || | |
5081 | (hdrtype != DMU_SUBSTREAM && hdrtype != DMU_COMPOUNDSTREAM)) { | |
5082 | zfs_error_aux(hdl, dgettext(TEXT_DOMAIN, | |
5083 | "stream has unsupported feature, feature flags = %lx"), | |
5084 | featureflags); | |
5085 | return (zfs_error(hdl, EZFS_BADSTREAM, errbuf)); | |
5086 | } | |
5087 | ||
9c5e88b1 | 5088 | /* Holds feature is set once in the compound stream header. */ |
c618f87c | 5089 | if (featureflags & DMU_BACKUP_FEATURE_HOLDS) |
9c5e88b1 PZ |
5090 | flags->holds = B_TRUE; |
5091 | ||
34dc7c2f BB |
5092 | if (strchr(drrb->drr_toname, '@') == NULL) { |
5093 | zfs_error_aux(hdl, dgettext(TEXT_DOMAIN, "invalid " | |
5094 | "stream (bad snapshot name)")); | |
5095 | return (zfs_error(hdl, EZFS_BADSTREAM, errbuf)); | |
5096 | } | |
5097 | ||
428870ff | 5098 | if (DMU_GET_STREAM_HDRTYPE(drrb->drr_versioninfo) == DMU_SUBSTREAM) { |
eca7b760 | 5099 | char nonpackage_sendfs[ZFS_MAX_DATASET_NAME_LEN]; |
428870ff BB |
5100 | if (sendfs == NULL) { |
5101 | /* | |
5102 | * We were not called from zfs_receive_package(). Get | |
5103 | * the fs specified by 'zfs send'. | |
5104 | */ | |
5105 | char *cp; | |
5106 | (void) strlcpy(nonpackage_sendfs, | |
eca7b760 IK |
5107 | drr.drr_u.drr_begin.drr_toname, |
5108 | sizeof (nonpackage_sendfs)); | |
428870ff BB |
5109 | if ((cp = strchr(nonpackage_sendfs, '@')) != NULL) |
5110 | *cp = '\0'; | |
5111 | sendfs = nonpackage_sendfs; | |
671c9354 | 5112 | VERIFY(finalsnap == NULL); |
428870ff | 5113 | } |
fcff0f35 PD |
5114 | return (zfs_receive_one(hdl, infd, tosnap, originsnap, flags, |
5115 | &drr, &drr_noswap, sendfs, stream_nv, stream_avl, top_zfs, | |
196bee4c | 5116 | finalsnap, cmdprops)); |
428870ff BB |
5117 | } else { |
5118 | assert(DMU_GET_STREAM_HDRTYPE(drrb->drr_versioninfo) == | |
5119 | DMU_COMPOUNDSTREAM); | |
fcff0f35 | 5120 | return (zfs_receive_package(hdl, infd, tosnap, flags, &drr, |
196bee4c | 5121 | &zcksum, top_zfs, cmdprops)); |
34dc7c2f BB |
5122 | } |
5123 | } | |
b128c09f BB |
5124 | |
5125 | /* | |
5126 | * Restores a backup of tosnap from the file descriptor specified by infd. | |
5127 | * Return 0 on total success, -2 if some things couldn't be | |
5128 | * destroyed/renamed/promoted, -1 if some things couldn't be received. | |
47dfff3b MA |
5129 | * (-1 will override -2, if -1 and the resumable flag was specified the |
5130 | * transfer can be resumed if the sending side supports it). | |
b128c09f BB |
5131 | */ |
5132 | int | |
fcff0f35 PD |
5133 | zfs_receive(libzfs_handle_t *hdl, const char *tosnap, nvlist_t *props, |
5134 | recvflags_t *flags, int infd, avl_tree_t *stream_avl) | |
b128c09f BB |
5135 | { |
5136 | char *top_zfs = NULL; | |
5137 | int err; | |
5c3f61eb | 5138 | struct stat sb; |
fcff0f35 | 5139 | char *originsnap = NULL; |
5c3f61eb RY |
5140 | |
5141 | /* | |
5142 | * The only way fstat can fail is if we do not have a valid file | |
5143 | * descriptor. | |
5144 | */ | |
5145 | if (fstat(infd, &sb) == -1) { | |
5146 | perror("fstat"); | |
5147 | return (-2); | |
5148 | } | |
5149 | ||
5c3f61eb RY |
5150 | /* |
5151 | * It is not uncommon for gigabytes to be processed in zfs receive. | |
73cdcc63 | 5152 | * Speculatively increase the buffer size if supported by the platform. |
5c3f61eb | 5153 | */ |
73cdcc63 MM |
5154 | if (S_ISFIFO(sb.st_mode)) |
5155 | libzfs_set_pipe_max(infd); | |
572e2857 | 5156 | |
fcff0f35 PD |
5157 | if (props) { |
5158 | err = nvlist_lookup_string(props, "origin", &originsnap); | |
5159 | if (err && err != ENOENT) | |
5160 | return (err); | |
5161 | } | |
5162 | ||
fcff0f35 | 5163 | err = zfs_receive_impl(hdl, tosnap, originsnap, flags, infd, NULL, NULL, |
196bee4c | 5164 | stream_avl, &top_zfs, NULL, props); |
b128c09f | 5165 | |
bb61cc31 | 5166 | if (err == 0 && !flags->nomount && flags->domount && top_zfs) { |
689f093e GN |
5167 | zfs_handle_t *zhp = NULL; |
5168 | prop_changelist_t *clp = NULL; | |
b128c09f | 5169 | |
bb61cc31 TC |
5170 | zhp = zfs_open(hdl, top_zfs, |
5171 | ZFS_TYPE_FILESYSTEM | ZFS_TYPE_VOLUME); | |
5172 | if (zhp == NULL) { | |
5173 | err = -1; | |
5174 | goto out; | |
5175 | } else { | |
5176 | if (zhp->zfs_type == ZFS_TYPE_VOLUME) { | |
5177 | zfs_close(zhp); | |
5178 | goto out; | |
5179 | } | |
5180 | ||
b128c09f | 5181 | clp = changelist_gather(zhp, ZFS_PROP_MOUNTPOINT, |
a57d3d45 MZ |
5182 | CL_GATHER_MOUNT_ALWAYS, |
5183 | flags->forceunmount ? MS_FORCE : 0); | |
b128c09f | 5184 | zfs_close(zhp); |
bb61cc31 TC |
5185 | if (clp == NULL) { |
5186 | err = -1; | |
5187 | goto out; | |
b128c09f | 5188 | } |
bb61cc31 TC |
5189 | |
5190 | /* mount and share received datasets */ | |
5191 | err = changelist_postfix(clp); | |
5192 | changelist_free(clp); | |
5193 | if (err != 0) | |
5194 | err = -1; | |
b128c09f | 5195 | } |
b128c09f | 5196 | } |
bb61cc31 TC |
5197 | |
5198 | out: | |
b128c09f BB |
5199 | if (top_zfs) |
5200 | free(top_zfs); | |
5201 | ||
5202 | return (err); | |
5203 | } |