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1 /*
2 * CDDL HEADER START
3 *
4 * The contents of this file are subject to the terms of the
5 * Common Development and Distribution License (the "License").
6 * You may not use this file except in compliance with the License.
7 *
8 * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE
9 * or http://www.opensolaris.org/os/licensing.
10 * See the License for the specific language governing permissions
11 * and limitations under the License.
12 *
13 * When distributing Covered Code, include this CDDL HEADER in each
14 * file and include the License file at usr/src/OPENSOLARIS.LICENSE.
15 * If applicable, add the following below this CDDL HEADER, with the
16 * fields enclosed by brackets "[]" replaced with your own identifying
17 * information: Portions Copyright [yyyy] [name of copyright owner]
18 *
19 * CDDL HEADER END
20 */
21 /*
22 * Copyright (c) 2005, 2010, Oracle and/or its affiliates. All rights reserved.
23 * Copyright (c) 2012 Cyril Plisko. All rights reserved.
24 * Copyright (c) 2013, 2015 by Delphix. All rights reserved.
25 */
26
27 #include <sys/types.h>
28 #include <sys/param.h>
29 #include <sys/systm.h>
30 #include <sys/sysmacros.h>
31 #include <sys/cmn_err.h>
32 #include <sys/kmem.h>
33 #include <sys/thread.h>
34 #include <sys/file.h>
35 #include <sys/fcntl.h>
36 #include <sys/vfs.h>
37 #include <sys/fs/zfs.h>
38 #include <sys/zfs_znode.h>
39 #include <sys/zfs_dir.h>
40 #include <sys/zfs_acl.h>
41 #include <sys/zfs_fuid.h>
42 #include <sys/zfs_vnops.h>
43 #include <sys/spa.h>
44 #include <sys/zil.h>
45 #include <sys/byteorder.h>
46 #include <sys/stat.h>
47 #include <sys/mode.h>
48 #include <sys/acl.h>
49 #include <sys/atomic.h>
50 #include <sys/cred.h>
51 #include <sys/zpl.h>
52
53 /*
54 * Functions to replay ZFS intent log (ZIL) records
55 * The functions are called through a function vector (zfs_replay_vector)
56 * which is indexed by the transaction type.
57 */
58
59 static void
60 zfs_init_vattr(vattr_t *vap, uint64_t mask, uint64_t mode,
61 uint64_t uid, uint64_t gid, uint64_t rdev, uint64_t nodeid)
62 {
63 bzero(vap, sizeof (*vap));
64 vap->va_mask = (uint_t)mask;
65 vap->va_type = IFTOVT(mode);
66 vap->va_mode = mode;
67 vap->va_uid = (uid_t)(IS_EPHEMERAL(uid)) ? -1 : uid;
68 vap->va_gid = (gid_t)(IS_EPHEMERAL(gid)) ? -1 : gid;
69 vap->va_rdev = rdev;
70 vap->va_nodeid = nodeid;
71 }
72
73 /* ARGSUSED */
74 static int
75 zfs_replay_error(zfsvfs_t *zfsvfs, lr_t *lr, boolean_t byteswap)
76 {
77 return (SET_ERROR(ENOTSUP));
78 }
79
80 static void
81 zfs_replay_xvattr(lr_attr_t *lrattr, xvattr_t *xvap)
82 {
83 xoptattr_t *xoap = NULL;
84 uint64_t *attrs;
85 uint64_t *crtime;
86 uint32_t *bitmap;
87 void *scanstamp;
88 int i;
89
90 xvap->xva_vattr.va_mask |= ATTR_XVATTR;
91 if ((xoap = xva_getxoptattr(xvap)) == NULL) {
92 xvap->xva_vattr.va_mask &= ~ATTR_XVATTR; /* shouldn't happen */
93 return;
94 }
95
96 ASSERT(lrattr->lr_attr_masksize == xvap->xva_mapsize);
97
98 bitmap = &lrattr->lr_attr_bitmap;
99 for (i = 0; i != lrattr->lr_attr_masksize; i++, bitmap++)
100 xvap->xva_reqattrmap[i] = *bitmap;
101
102 attrs = (uint64_t *)(lrattr + lrattr->lr_attr_masksize - 1);
103 crtime = attrs + 1;
104 scanstamp = (caddr_t)(crtime + 2);
105
106 if (XVA_ISSET_REQ(xvap, XAT_HIDDEN))
107 xoap->xoa_hidden = ((*attrs & XAT0_HIDDEN) != 0);
108 if (XVA_ISSET_REQ(xvap, XAT_SYSTEM))
109 xoap->xoa_system = ((*attrs & XAT0_SYSTEM) != 0);
110 if (XVA_ISSET_REQ(xvap, XAT_ARCHIVE))
111 xoap->xoa_archive = ((*attrs & XAT0_ARCHIVE) != 0);
112 if (XVA_ISSET_REQ(xvap, XAT_READONLY))
113 xoap->xoa_readonly = ((*attrs & XAT0_READONLY) != 0);
114 if (XVA_ISSET_REQ(xvap, XAT_IMMUTABLE))
115 xoap->xoa_immutable = ((*attrs & XAT0_IMMUTABLE) != 0);
116 if (XVA_ISSET_REQ(xvap, XAT_NOUNLINK))
117 xoap->xoa_nounlink = ((*attrs & XAT0_NOUNLINK) != 0);
118 if (XVA_ISSET_REQ(xvap, XAT_APPENDONLY))
119 xoap->xoa_appendonly = ((*attrs & XAT0_APPENDONLY) != 0);
120 if (XVA_ISSET_REQ(xvap, XAT_NODUMP))
121 xoap->xoa_nodump = ((*attrs & XAT0_NODUMP) != 0);
122 if (XVA_ISSET_REQ(xvap, XAT_OPAQUE))
123 xoap->xoa_opaque = ((*attrs & XAT0_OPAQUE) != 0);
124 if (XVA_ISSET_REQ(xvap, XAT_AV_MODIFIED))
125 xoap->xoa_av_modified = ((*attrs & XAT0_AV_MODIFIED) != 0);
126 if (XVA_ISSET_REQ(xvap, XAT_AV_QUARANTINED))
127 xoap->xoa_av_quarantined =
128 ((*attrs & XAT0_AV_QUARANTINED) != 0);
129 if (XVA_ISSET_REQ(xvap, XAT_CREATETIME))
130 ZFS_TIME_DECODE(&xoap->xoa_createtime, crtime);
131 if (XVA_ISSET_REQ(xvap, XAT_AV_SCANSTAMP))
132 bcopy(scanstamp, xoap->xoa_av_scanstamp, AV_SCANSTAMP_SZ);
133 if (XVA_ISSET_REQ(xvap, XAT_REPARSE))
134 xoap->xoa_reparse = ((*attrs & XAT0_REPARSE) != 0);
135 if (XVA_ISSET_REQ(xvap, XAT_OFFLINE))
136 xoap->xoa_offline = ((*attrs & XAT0_OFFLINE) != 0);
137 if (XVA_ISSET_REQ(xvap, XAT_SPARSE))
138 xoap->xoa_sparse = ((*attrs & XAT0_SPARSE) != 0);
139 }
140
141 static int
142 zfs_replay_domain_cnt(uint64_t uid, uint64_t gid)
143 {
144 uint64_t uid_idx;
145 uint64_t gid_idx;
146 int domcnt = 0;
147
148 uid_idx = FUID_INDEX(uid);
149 gid_idx = FUID_INDEX(gid);
150 if (uid_idx)
151 domcnt++;
152 if (gid_idx > 0 && gid_idx != uid_idx)
153 domcnt++;
154
155 return (domcnt);
156 }
157
158 static void *
159 zfs_replay_fuid_domain_common(zfs_fuid_info_t *fuid_infop, void *start,
160 int domcnt)
161 {
162 int i;
163
164 for (i = 0; i != domcnt; i++) {
165 fuid_infop->z_domain_table[i] = start;
166 start = (caddr_t)start + strlen(start) + 1;
167 }
168
169 return (start);
170 }
171
172 /*
173 * Set the uid/gid in the fuid_info structure.
174 */
175 static void
176 zfs_replay_fuid_ugid(zfs_fuid_info_t *fuid_infop, uint64_t uid, uint64_t gid)
177 {
178 /*
179 * If owner or group are log specific FUIDs then slurp up
180 * domain information and build zfs_fuid_info_t
181 */
182 if (IS_EPHEMERAL(uid))
183 fuid_infop->z_fuid_owner = uid;
184
185 if (IS_EPHEMERAL(gid))
186 fuid_infop->z_fuid_group = gid;
187 }
188
189 /*
190 * Load fuid domains into fuid_info_t
191 */
192 static zfs_fuid_info_t *
193 zfs_replay_fuid_domain(void *buf, void **end, uint64_t uid, uint64_t gid)
194 {
195 int domcnt;
196
197 zfs_fuid_info_t *fuid_infop;
198
199 fuid_infop = zfs_fuid_info_alloc();
200
201 domcnt = zfs_replay_domain_cnt(uid, gid);
202
203 if (domcnt == 0)
204 return (fuid_infop);
205
206 fuid_infop->z_domain_table =
207 kmem_zalloc(domcnt * sizeof (char *), KM_SLEEP);
208
209 zfs_replay_fuid_ugid(fuid_infop, uid, gid);
210
211 fuid_infop->z_domain_cnt = domcnt;
212 *end = zfs_replay_fuid_domain_common(fuid_infop, buf, domcnt);
213 return (fuid_infop);
214 }
215
216 /*
217 * load zfs_fuid_t's and fuid_domains into fuid_info_t
218 */
219 static zfs_fuid_info_t *
220 zfs_replay_fuids(void *start, void **end, int idcnt, int domcnt, uint64_t uid,
221 uint64_t gid)
222 {
223 uint64_t *log_fuid = (uint64_t *)start;
224 zfs_fuid_info_t *fuid_infop;
225 int i;
226
227 fuid_infop = zfs_fuid_info_alloc();
228 fuid_infop->z_domain_cnt = domcnt;
229
230 fuid_infop->z_domain_table =
231 kmem_zalloc(domcnt * sizeof (char *), KM_SLEEP);
232
233 for (i = 0; i != idcnt; i++) {
234 zfs_fuid_t *zfuid;
235
236 zfuid = kmem_alloc(sizeof (zfs_fuid_t), KM_SLEEP);
237 zfuid->z_logfuid = *log_fuid;
238 zfuid->z_id = -1;
239 zfuid->z_domidx = 0;
240 list_insert_tail(&fuid_infop->z_fuids, zfuid);
241 log_fuid++;
242 }
243
244 zfs_replay_fuid_ugid(fuid_infop, uid, gid);
245
246 *end = zfs_replay_fuid_domain_common(fuid_infop, log_fuid, domcnt);
247 return (fuid_infop);
248 }
249
250 static void
251 zfs_replay_swap_attrs(lr_attr_t *lrattr)
252 {
253 /* swap the lr_attr structure */
254 byteswap_uint32_array(lrattr, sizeof (*lrattr));
255 /* swap the bitmap */
256 byteswap_uint32_array(lrattr + 1, (lrattr->lr_attr_masksize - 1) *
257 sizeof (uint32_t));
258 /* swap the attributes, create time + 64 bit word for attributes */
259 byteswap_uint64_array((caddr_t)(lrattr + 1) + (sizeof (uint32_t) *
260 (lrattr->lr_attr_masksize - 1)), 3 * sizeof (uint64_t));
261 }
262
263 /*
264 * Replay file create with optional ACL, xvattr information as well
265 * as option FUID information.
266 */
267 static int
268 zfs_replay_create_acl(zfsvfs_t *zfsvfs,
269 lr_acl_create_t *lracl, boolean_t byteswap)
270 {
271 char *name = NULL; /* location determined later */
272 lr_create_t *lr = (lr_create_t *)lracl;
273 znode_t *dzp;
274 struct inode *ip = NULL;
275 xvattr_t xva;
276 int vflg = 0;
277 vsecattr_t vsec = { 0 };
278 lr_attr_t *lrattr;
279 void *aclstart;
280 void *fuidstart;
281 size_t xvatlen = 0;
282 uint64_t txtype;
283 uint64_t objid;
284 uint64_t dnodesize;
285 int error;
286
287 txtype = (lr->lr_common.lrc_txtype & ~TX_CI);
288 if (byteswap) {
289 byteswap_uint64_array(lracl, sizeof (*lracl));
290 if (txtype == TX_CREATE_ACL_ATTR ||
291 txtype == TX_MKDIR_ACL_ATTR) {
292 lrattr = (lr_attr_t *)(caddr_t)(lracl + 1);
293 zfs_replay_swap_attrs(lrattr);
294 xvatlen = ZIL_XVAT_SIZE(lrattr->lr_attr_masksize);
295 }
296
297 aclstart = (caddr_t)(lracl + 1) + xvatlen;
298 zfs_ace_byteswap(aclstart, lracl->lr_acl_bytes, B_FALSE);
299 /* swap fuids */
300 if (lracl->lr_fuidcnt) {
301 byteswap_uint64_array((caddr_t)aclstart +
302 ZIL_ACE_LENGTH(lracl->lr_acl_bytes),
303 lracl->lr_fuidcnt * sizeof (uint64_t));
304 }
305 }
306
307 if ((error = zfs_zget(zfsvfs, lr->lr_doid, &dzp)) != 0)
308 return (error);
309
310 objid = LR_FOID_GET_OBJ(lr->lr_foid);
311 dnodesize = LR_FOID_GET_SLOTS(lr->lr_foid) << DNODE_SHIFT;
312
313 xva_init(&xva);
314 zfs_init_vattr(&xva.xva_vattr, ATTR_MODE | ATTR_UID | ATTR_GID,
315 lr->lr_mode, lr->lr_uid, lr->lr_gid, lr->lr_rdev, objid);
316
317 /*
318 * All forms of zfs create (create, mkdir, mkxattrdir, symlink)
319 * eventually end up in zfs_mknode(), which assigns the object's
320 * creation time, generation number, and dnode size. The generic
321 * zfs_create() has no concept of these attributes, so we smuggle
322 * the values inside the vattr's otherwise unused va_ctime,
323 * va_nblocks, and va_fsid fields.
324 */
325 ZFS_TIME_DECODE(&xva.xva_vattr.va_ctime, lr->lr_crtime);
326 xva.xva_vattr.va_nblocks = lr->lr_gen;
327 xva.xva_vattr.va_fsid = dnodesize;
328
329 error = dmu_object_info(zfsvfs->z_os, lr->lr_foid, NULL);
330 if (error != ENOENT)
331 goto bail;
332
333 if (lr->lr_common.lrc_txtype & TX_CI)
334 vflg |= FIGNORECASE;
335 switch (txtype) {
336 case TX_CREATE_ACL:
337 aclstart = (caddr_t)(lracl + 1);
338 fuidstart = (caddr_t)aclstart +
339 ZIL_ACE_LENGTH(lracl->lr_acl_bytes);
340 zfsvfs->z_fuid_replay = zfs_replay_fuids(fuidstart,
341 (void *)&name, lracl->lr_fuidcnt, lracl->lr_domcnt,
342 lr->lr_uid, lr->lr_gid);
343 /*FALLTHROUGH*/
344 case TX_CREATE_ACL_ATTR:
345 if (name == NULL) {
346 lrattr = (lr_attr_t *)(caddr_t)(lracl + 1);
347 xvatlen = ZIL_XVAT_SIZE(lrattr->lr_attr_masksize);
348 xva.xva_vattr.va_mask |= ATTR_XVATTR;
349 zfs_replay_xvattr(lrattr, &xva);
350 }
351 vsec.vsa_mask = VSA_ACE | VSA_ACE_ACLFLAGS;
352 vsec.vsa_aclentp = (caddr_t)(lracl + 1) + xvatlen;
353 vsec.vsa_aclcnt = lracl->lr_aclcnt;
354 vsec.vsa_aclentsz = lracl->lr_acl_bytes;
355 vsec.vsa_aclflags = lracl->lr_acl_flags;
356 if (zfsvfs->z_fuid_replay == NULL) {
357 fuidstart = (caddr_t)(lracl + 1) + xvatlen +
358 ZIL_ACE_LENGTH(lracl->lr_acl_bytes);
359 zfsvfs->z_fuid_replay =
360 zfs_replay_fuids(fuidstart,
361 (void *)&name, lracl->lr_fuidcnt, lracl->lr_domcnt,
362 lr->lr_uid, lr->lr_gid);
363 }
364
365 error = zfs_create(ZTOI(dzp), name, &xva.xva_vattr,
366 0, 0, &ip, kcred, vflg, &vsec);
367 break;
368 case TX_MKDIR_ACL:
369 aclstart = (caddr_t)(lracl + 1);
370 fuidstart = (caddr_t)aclstart +
371 ZIL_ACE_LENGTH(lracl->lr_acl_bytes);
372 zfsvfs->z_fuid_replay = zfs_replay_fuids(fuidstart,
373 (void *)&name, lracl->lr_fuidcnt, lracl->lr_domcnt,
374 lr->lr_uid, lr->lr_gid);
375 /*FALLTHROUGH*/
376 case TX_MKDIR_ACL_ATTR:
377 if (name == NULL) {
378 lrattr = (lr_attr_t *)(caddr_t)(lracl + 1);
379 xvatlen = ZIL_XVAT_SIZE(lrattr->lr_attr_masksize);
380 zfs_replay_xvattr(lrattr, &xva);
381 }
382 vsec.vsa_mask = VSA_ACE | VSA_ACE_ACLFLAGS;
383 vsec.vsa_aclentp = (caddr_t)(lracl + 1) + xvatlen;
384 vsec.vsa_aclcnt = lracl->lr_aclcnt;
385 vsec.vsa_aclentsz = lracl->lr_acl_bytes;
386 vsec.vsa_aclflags = lracl->lr_acl_flags;
387 if (zfsvfs->z_fuid_replay == NULL) {
388 fuidstart = (caddr_t)(lracl + 1) + xvatlen +
389 ZIL_ACE_LENGTH(lracl->lr_acl_bytes);
390 zfsvfs->z_fuid_replay =
391 zfs_replay_fuids(fuidstart,
392 (void *)&name, lracl->lr_fuidcnt, lracl->lr_domcnt,
393 lr->lr_uid, lr->lr_gid);
394 }
395 error = zfs_mkdir(ZTOI(dzp), name, &xva.xva_vattr,
396 &ip, kcred, vflg, &vsec);
397 break;
398 default:
399 error = SET_ERROR(ENOTSUP);
400 }
401
402 bail:
403 if (error == 0 && ip != NULL)
404 iput(ip);
405
406 iput(ZTOI(dzp));
407
408 if (zfsvfs->z_fuid_replay)
409 zfs_fuid_info_free(zfsvfs->z_fuid_replay);
410 zfsvfs->z_fuid_replay = NULL;
411
412 return (error);
413 }
414
415 static int
416 zfs_replay_create(zfsvfs_t *zfsvfs, lr_create_t *lr, boolean_t byteswap)
417 {
418 char *name = NULL; /* location determined later */
419 char *link; /* symlink content follows name */
420 znode_t *dzp;
421 struct inode *ip = NULL;
422 xvattr_t xva;
423 int vflg = 0;
424 size_t lrsize = sizeof (lr_create_t);
425 lr_attr_t *lrattr;
426 void *start;
427 size_t xvatlen;
428 uint64_t txtype;
429 uint64_t objid;
430 uint64_t dnodesize;
431 int error;
432
433 txtype = (lr->lr_common.lrc_txtype & ~TX_CI);
434 if (byteswap) {
435 byteswap_uint64_array(lr, sizeof (*lr));
436 if (txtype == TX_CREATE_ATTR || txtype == TX_MKDIR_ATTR)
437 zfs_replay_swap_attrs((lr_attr_t *)(lr + 1));
438 }
439
440
441 if ((error = zfs_zget(zfsvfs, lr->lr_doid, &dzp)) != 0)
442 return (error);
443
444 objid = LR_FOID_GET_OBJ(lr->lr_foid);
445 dnodesize = LR_FOID_GET_SLOTS(lr->lr_foid) << DNODE_SHIFT;
446
447 xva_init(&xva);
448 zfs_init_vattr(&xva.xva_vattr, ATTR_MODE | ATTR_UID | ATTR_GID,
449 lr->lr_mode, lr->lr_uid, lr->lr_gid, lr->lr_rdev, objid);
450
451 /*
452 * All forms of zfs create (create, mkdir, mkxattrdir, symlink)
453 * eventually end up in zfs_mknode(), which assigns the object's
454 * creation time, generation number, and dnode slot count. The
455 * generic zfs_create() has no concept of these attributes, so
456 * we smuggle the values inside * the vattr's otherwise unused
457 * va_ctime, va_nblocks, and va_nlink fields.
458 */
459 ZFS_TIME_DECODE(&xva.xva_vattr.va_ctime, lr->lr_crtime);
460 xva.xva_vattr.va_nblocks = lr->lr_gen;
461 xva.xva_vattr.va_fsid = dnodesize;
462
463 error = dmu_object_info(zfsvfs->z_os, objid, NULL);
464 if (error != ENOENT)
465 goto out;
466
467 if (lr->lr_common.lrc_txtype & TX_CI)
468 vflg |= FIGNORECASE;
469
470 /*
471 * Symlinks don't have fuid info, and CIFS never creates
472 * symlinks.
473 *
474 * The _ATTR versions will grab the fuid info in their subcases.
475 */
476 if ((int)lr->lr_common.lrc_txtype != TX_SYMLINK &&
477 (int)lr->lr_common.lrc_txtype != TX_MKDIR_ATTR &&
478 (int)lr->lr_common.lrc_txtype != TX_CREATE_ATTR) {
479 start = (lr + 1);
480 zfsvfs->z_fuid_replay =
481 zfs_replay_fuid_domain(start, &start,
482 lr->lr_uid, lr->lr_gid);
483 }
484
485 switch (txtype) {
486 case TX_CREATE_ATTR:
487 lrattr = (lr_attr_t *)(caddr_t)(lr + 1);
488 xvatlen = ZIL_XVAT_SIZE(lrattr->lr_attr_masksize);
489 zfs_replay_xvattr((lr_attr_t *)((caddr_t)lr + lrsize), &xva);
490 start = (caddr_t)(lr + 1) + xvatlen;
491 zfsvfs->z_fuid_replay =
492 zfs_replay_fuid_domain(start, &start,
493 lr->lr_uid, lr->lr_gid);
494 name = (char *)start;
495
496 /*FALLTHROUGH*/
497 case TX_CREATE:
498 if (name == NULL)
499 name = (char *)start;
500
501 error = zfs_create(ZTOI(dzp), name, &xva.xva_vattr,
502 0, 0, &ip, kcred, vflg, NULL);
503 break;
504 case TX_MKDIR_ATTR:
505 lrattr = (lr_attr_t *)(caddr_t)(lr + 1);
506 xvatlen = ZIL_XVAT_SIZE(lrattr->lr_attr_masksize);
507 zfs_replay_xvattr((lr_attr_t *)((caddr_t)lr + lrsize), &xva);
508 start = (caddr_t)(lr + 1) + xvatlen;
509 zfsvfs->z_fuid_replay =
510 zfs_replay_fuid_domain(start, &start,
511 lr->lr_uid, lr->lr_gid);
512 name = (char *)start;
513
514 /*FALLTHROUGH*/
515 case TX_MKDIR:
516 if (name == NULL)
517 name = (char *)(lr + 1);
518
519 error = zfs_mkdir(ZTOI(dzp), name, &xva.xva_vattr,
520 &ip, kcred, vflg, NULL);
521 break;
522 case TX_MKXATTR:
523 error = zfs_make_xattrdir(dzp, &xva.xva_vattr, &ip, kcred);
524 break;
525 case TX_SYMLINK:
526 name = (char *)(lr + 1);
527 link = name + strlen(name) + 1;
528 error = zfs_symlink(ZTOI(dzp), name, &xva.xva_vattr,
529 link, &ip, kcred, vflg);
530 break;
531 default:
532 error = SET_ERROR(ENOTSUP);
533 }
534
535 out:
536 if (error == 0 && ip != NULL)
537 iput(ip);
538
539 iput(ZTOI(dzp));
540
541 if (zfsvfs->z_fuid_replay)
542 zfs_fuid_info_free(zfsvfs->z_fuid_replay);
543 zfsvfs->z_fuid_replay = NULL;
544 return (error);
545 }
546
547 static int
548 zfs_replay_remove(zfsvfs_t *zfsvfs, lr_remove_t *lr, boolean_t byteswap)
549 {
550 char *name = (char *)(lr + 1); /* name follows lr_remove_t */
551 znode_t *dzp;
552 int error;
553 int vflg = 0;
554
555 if (byteswap)
556 byteswap_uint64_array(lr, sizeof (*lr));
557
558 if ((error = zfs_zget(zfsvfs, lr->lr_doid, &dzp)) != 0)
559 return (error);
560
561 if (lr->lr_common.lrc_txtype & TX_CI)
562 vflg |= FIGNORECASE;
563
564 switch ((int)lr->lr_common.lrc_txtype) {
565 case TX_REMOVE:
566 error = zfs_remove(ZTOI(dzp), name, kcred, vflg);
567 break;
568 case TX_RMDIR:
569 error = zfs_rmdir(ZTOI(dzp), name, NULL, kcred, vflg);
570 break;
571 default:
572 error = SET_ERROR(ENOTSUP);
573 }
574
575 iput(ZTOI(dzp));
576
577 return (error);
578 }
579
580 static int
581 zfs_replay_link(zfsvfs_t *zfsvfs, lr_link_t *lr, boolean_t byteswap)
582 {
583 char *name = (char *)(lr + 1); /* name follows lr_link_t */
584 znode_t *dzp, *zp;
585 int error;
586 int vflg = 0;
587
588 if (byteswap)
589 byteswap_uint64_array(lr, sizeof (*lr));
590
591 if ((error = zfs_zget(zfsvfs, lr->lr_doid, &dzp)) != 0)
592 return (error);
593
594 if ((error = zfs_zget(zfsvfs, lr->lr_link_obj, &zp)) != 0) {
595 iput(ZTOI(dzp));
596 return (error);
597 }
598
599 if (lr->lr_common.lrc_txtype & TX_CI)
600 vflg |= FIGNORECASE;
601
602 error = zfs_link(ZTOI(dzp), ZTOI(zp), name, kcred, vflg);
603
604 iput(ZTOI(zp));
605 iput(ZTOI(dzp));
606
607 return (error);
608 }
609
610 static int
611 zfs_replay_rename(zfsvfs_t *zfsvfs, lr_rename_t *lr, boolean_t byteswap)
612 {
613 char *sname = (char *)(lr + 1); /* sname and tname follow lr_rename_t */
614 char *tname = sname + strlen(sname) + 1;
615 znode_t *sdzp, *tdzp;
616 int error;
617 int vflg = 0;
618
619 if (byteswap)
620 byteswap_uint64_array(lr, sizeof (*lr));
621
622 if ((error = zfs_zget(zfsvfs, lr->lr_sdoid, &sdzp)) != 0)
623 return (error);
624
625 if ((error = zfs_zget(zfsvfs, lr->lr_tdoid, &tdzp)) != 0) {
626 iput(ZTOI(sdzp));
627 return (error);
628 }
629
630 if (lr->lr_common.lrc_txtype & TX_CI)
631 vflg |= FIGNORECASE;
632
633 error = zfs_rename(ZTOI(sdzp), sname, ZTOI(tdzp), tname, kcred, vflg);
634
635 iput(ZTOI(tdzp));
636 iput(ZTOI(sdzp));
637
638 return (error);
639 }
640
641 static int
642 zfs_replay_write(zfsvfs_t *zfsvfs, lr_write_t *lr, boolean_t byteswap)
643 {
644 char *data = (char *)(lr + 1); /* data follows lr_write_t */
645 znode_t *zp;
646 int error, written;
647 uint64_t eod, offset, length;
648
649 if (byteswap)
650 byteswap_uint64_array(lr, sizeof (*lr));
651
652 if ((error = zfs_zget(zfsvfs, lr->lr_foid, &zp)) != 0) {
653 /*
654 * As we can log writes out of order, it's possible the
655 * file has been removed. In this case just drop the write
656 * and return success.
657 */
658 if (error == ENOENT)
659 error = 0;
660 return (error);
661 }
662
663 offset = lr->lr_offset;
664 length = lr->lr_length;
665 eod = offset + length; /* end of data for this write */
666
667 /*
668 * This may be a write from a dmu_sync() for a whole block,
669 * and may extend beyond the current end of the file.
670 * We can't just replay what was written for this TX_WRITE as
671 * a future TX_WRITE2 may extend the eof and the data for that
672 * write needs to be there. So we write the whole block and
673 * reduce the eof. This needs to be done within the single dmu
674 * transaction created within vn_rdwr -> zfs_write. So a possible
675 * new end of file is passed through in zfsvfs->z_replay_eof
676 */
677
678 zfsvfs->z_replay_eof = 0; /* 0 means don't change end of file */
679
680 /* If it's a dmu_sync() block, write the whole block */
681 if (lr->lr_common.lrc_reclen == sizeof (lr_write_t)) {
682 uint64_t blocksize = BP_GET_LSIZE(&lr->lr_blkptr);
683 if (length < blocksize) {
684 offset -= offset % blocksize;
685 length = blocksize;
686 }
687 if (zp->z_size < eod)
688 zfsvfs->z_replay_eof = eod;
689 }
690
691 written = zpl_write_common(ZTOI(zp), data, length, &offset,
692 UIO_SYSSPACE, 0, kcred);
693 if (written < 0)
694 error = -written;
695 else if (written < length)
696 error = SET_ERROR(EIO); /* short write */
697
698 iput(ZTOI(zp));
699 zfsvfs->z_replay_eof = 0; /* safety */
700
701 return (error);
702 }
703
704 /*
705 * TX_WRITE2 are only generated when dmu_sync() returns EALREADY
706 * meaning the pool block is already being synced. So now that we always write
707 * out full blocks, all we have to do is expand the eof if
708 * the file is grown.
709 */
710 static int
711 zfs_replay_write2(zfsvfs_t *zfsvfs, lr_write_t *lr, boolean_t byteswap)
712 {
713 znode_t *zp;
714 int error;
715 uint64_t end;
716
717 if (byteswap)
718 byteswap_uint64_array(lr, sizeof (*lr));
719
720 if ((error = zfs_zget(zfsvfs, lr->lr_foid, &zp)) != 0)
721 return (error);
722
723 top:
724 end = lr->lr_offset + lr->lr_length;
725 if (end > zp->z_size) {
726 dmu_tx_t *tx = dmu_tx_create(zfsvfs->z_os);
727
728 zp->z_size = end;
729 dmu_tx_hold_sa(tx, zp->z_sa_hdl, B_FALSE);
730 error = dmu_tx_assign(tx, TXG_WAIT);
731 if (error) {
732 iput(ZTOI(zp));
733 if (error == ERESTART) {
734 dmu_tx_wait(tx);
735 dmu_tx_abort(tx);
736 goto top;
737 }
738 dmu_tx_abort(tx);
739 return (error);
740 }
741 (void) sa_update(zp->z_sa_hdl, SA_ZPL_SIZE(zfsvfs),
742 (void *)&zp->z_size, sizeof (uint64_t), tx);
743
744 /* Ensure the replayed seq is updated */
745 (void) zil_replaying(zfsvfs->z_log, tx);
746
747 dmu_tx_commit(tx);
748 }
749
750 iput(ZTOI(zp));
751
752 return (error);
753 }
754
755 static int
756 zfs_replay_truncate(zfsvfs_t *zfsvfs, lr_truncate_t *lr, boolean_t byteswap)
757 {
758 znode_t *zp;
759 flock64_t fl;
760 int error;
761
762 if (byteswap)
763 byteswap_uint64_array(lr, sizeof (*lr));
764
765 if ((error = zfs_zget(zfsvfs, lr->lr_foid, &zp)) != 0)
766 return (error);
767
768 bzero(&fl, sizeof (fl));
769 fl.l_type = F_WRLCK;
770 fl.l_whence = 0;
771 fl.l_start = lr->lr_offset;
772 fl.l_len = lr->lr_length;
773
774 error = zfs_space(ZTOI(zp), F_FREESP, &fl, FWRITE | FOFFMAX,
775 lr->lr_offset, kcred);
776
777 iput(ZTOI(zp));
778
779 return (error);
780 }
781
782 static int
783 zfs_replay_setattr(zfsvfs_t *zfsvfs, lr_setattr_t *lr, boolean_t byteswap)
784 {
785 znode_t *zp;
786 xvattr_t xva;
787 vattr_t *vap = &xva.xva_vattr;
788 int error;
789 void *start;
790
791 xva_init(&xva);
792 if (byteswap) {
793 byteswap_uint64_array(lr, sizeof (*lr));
794
795 if ((lr->lr_mask & ATTR_XVATTR) &&
796 zfsvfs->z_version >= ZPL_VERSION_INITIAL)
797 zfs_replay_swap_attrs((lr_attr_t *)(lr + 1));
798 }
799
800 if ((error = zfs_zget(zfsvfs, lr->lr_foid, &zp)) != 0)
801 return (error);
802
803 zfs_init_vattr(vap, lr->lr_mask, lr->lr_mode,
804 lr->lr_uid, lr->lr_gid, 0, lr->lr_foid);
805
806 vap->va_size = lr->lr_size;
807 ZFS_TIME_DECODE(&vap->va_atime, lr->lr_atime);
808 ZFS_TIME_DECODE(&vap->va_mtime, lr->lr_mtime);
809 gethrestime(&vap->va_ctime);
810 vap->va_mask |= ATTR_CTIME;
811
812 /*
813 * Fill in xvattr_t portions if necessary.
814 */
815
816 start = (lr_setattr_t *)(lr + 1);
817 if (vap->va_mask & ATTR_XVATTR) {
818 zfs_replay_xvattr((lr_attr_t *)start, &xva);
819 start = (caddr_t)start +
820 ZIL_XVAT_SIZE(((lr_attr_t *)start)->lr_attr_masksize);
821 } else
822 xva.xva_vattr.va_mask &= ~ATTR_XVATTR;
823
824 zfsvfs->z_fuid_replay = zfs_replay_fuid_domain(start, &start,
825 lr->lr_uid, lr->lr_gid);
826
827 error = zfs_setattr(ZTOI(zp), vap, 0, kcred);
828
829 zfs_fuid_info_free(zfsvfs->z_fuid_replay);
830 zfsvfs->z_fuid_replay = NULL;
831 iput(ZTOI(zp));
832
833 return (error);
834 }
835
836 static int
837 zfs_replay_acl_v0(zfsvfs_t *zfsvfs, lr_acl_v0_t *lr, boolean_t byteswap)
838 {
839 ace_t *ace = (ace_t *)(lr + 1); /* ace array follows lr_acl_t */
840 vsecattr_t vsa;
841 znode_t *zp;
842 int error;
843
844 if (byteswap) {
845 byteswap_uint64_array(lr, sizeof (*lr));
846 zfs_oldace_byteswap(ace, lr->lr_aclcnt);
847 }
848
849 if ((error = zfs_zget(zfsvfs, lr->lr_foid, &zp)) != 0)
850 return (error);
851
852 bzero(&vsa, sizeof (vsa));
853 vsa.vsa_mask = VSA_ACE | VSA_ACECNT;
854 vsa.vsa_aclcnt = lr->lr_aclcnt;
855 vsa.vsa_aclentsz = sizeof (ace_t) * vsa.vsa_aclcnt;
856 vsa.vsa_aclflags = 0;
857 vsa.vsa_aclentp = ace;
858
859 error = zfs_setsecattr(ZTOI(zp), &vsa, 0, kcred);
860
861 iput(ZTOI(zp));
862
863 return (error);
864 }
865
866 /*
867 * Replaying ACLs is complicated by FUID support.
868 * The log record may contain some optional data
869 * to be used for replaying FUID's. These pieces
870 * are the actual FUIDs that were created initially.
871 * The FUID table index may no longer be valid and
872 * during zfs_create() a new index may be assigned.
873 * Because of this the log will contain the original
874 * domain+rid in order to create a new FUID.
875 *
876 * The individual ACEs may contain an ephemeral uid/gid which is no
877 * longer valid and will need to be replaced with an actual FUID.
878 *
879 */
880 static int
881 zfs_replay_acl(zfsvfs_t *zfsvfs, lr_acl_t *lr, boolean_t byteswap)
882 {
883 ace_t *ace = (ace_t *)(lr + 1);
884 vsecattr_t vsa;
885 znode_t *zp;
886 int error;
887
888 if (byteswap) {
889 byteswap_uint64_array(lr, sizeof (*lr));
890 zfs_ace_byteswap(ace, lr->lr_acl_bytes, B_FALSE);
891 if (lr->lr_fuidcnt) {
892 byteswap_uint64_array((caddr_t)ace +
893 ZIL_ACE_LENGTH(lr->lr_acl_bytes),
894 lr->lr_fuidcnt * sizeof (uint64_t));
895 }
896 }
897
898 if ((error = zfs_zget(zfsvfs, lr->lr_foid, &zp)) != 0)
899 return (error);
900
901 bzero(&vsa, sizeof (vsa));
902 vsa.vsa_mask = VSA_ACE | VSA_ACECNT | VSA_ACE_ACLFLAGS;
903 vsa.vsa_aclcnt = lr->lr_aclcnt;
904 vsa.vsa_aclentp = ace;
905 vsa.vsa_aclentsz = lr->lr_acl_bytes;
906 vsa.vsa_aclflags = lr->lr_acl_flags;
907
908 if (lr->lr_fuidcnt) {
909 void *fuidstart = (caddr_t)ace +
910 ZIL_ACE_LENGTH(lr->lr_acl_bytes);
911
912 zfsvfs->z_fuid_replay =
913 zfs_replay_fuids(fuidstart, &fuidstart,
914 lr->lr_fuidcnt, lr->lr_domcnt, 0, 0);
915 }
916
917 error = zfs_setsecattr(ZTOI(zp), &vsa, 0, kcred);
918
919 if (zfsvfs->z_fuid_replay)
920 zfs_fuid_info_free(zfsvfs->z_fuid_replay);
921
922 zfsvfs->z_fuid_replay = NULL;
923 iput(ZTOI(zp));
924
925 return (error);
926 }
927
928 /*
929 * Callback vectors for replaying records
930 */
931 zil_replay_func_t zfs_replay_vector[TX_MAX_TYPE] = {
932 (zil_replay_func_t)zfs_replay_error, /* no such type */
933 (zil_replay_func_t)zfs_replay_create, /* TX_CREATE */
934 (zil_replay_func_t)zfs_replay_create, /* TX_MKDIR */
935 (zil_replay_func_t)zfs_replay_create, /* TX_MKXATTR */
936 (zil_replay_func_t)zfs_replay_create, /* TX_SYMLINK */
937 (zil_replay_func_t)zfs_replay_remove, /* TX_REMOVE */
938 (zil_replay_func_t)zfs_replay_remove, /* TX_RMDIR */
939 (zil_replay_func_t)zfs_replay_link, /* TX_LINK */
940 (zil_replay_func_t)zfs_replay_rename, /* TX_RENAME */
941 (zil_replay_func_t)zfs_replay_write, /* TX_WRITE */
942 (zil_replay_func_t)zfs_replay_truncate, /* TX_TRUNCATE */
943 (zil_replay_func_t)zfs_replay_setattr, /* TX_SETATTR */
944 (zil_replay_func_t)zfs_replay_acl_v0, /* TX_ACL_V0 */
945 (zil_replay_func_t)zfs_replay_acl, /* TX_ACL */
946 (zil_replay_func_t)zfs_replay_create_acl, /* TX_CREATE_ACL */
947 (zil_replay_func_t)zfs_replay_create, /* TX_CREATE_ATTR */
948 (zil_replay_func_t)zfs_replay_create_acl, /* TX_CREATE_ACL_ATTR */
949 (zil_replay_func_t)zfs_replay_create_acl, /* TX_MKDIR_ACL */
950 (zil_replay_func_t)zfs_replay_create, /* TX_MKDIR_ATTR */
951 (zil_replay_func_t)zfs_replay_create_acl, /* TX_MKDIR_ACL_ATTR */
952 (zil_replay_func_t)zfs_replay_write2, /* TX_WRITE2 */
953 };
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