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) 2013, 2015 by Delphix. All rights reserved.
24 */
25
26 #include <sys/types.h>
27 #include <sys/param.h>
28 #include <sys/systm.h>
29 #include <sys/sysmacros.h>
30 #include <sys/cmn_err.h>
31 #include <sys/kmem.h>
32 #include <sys/thread.h>
33 #include <sys/file.h>
34 #include <sys/fcntl.h>
35 #include <sys/vfs.h>
36 #include <sys/fs/zfs.h>
37 #include <sys/zfs_znode.h>
38 #include <sys/zfs_dir.h>
39 #include <sys/zfs_acl.h>
40 #include <sys/zfs_fuid.h>
41 #include <sys/spa.h>
42 #include <sys/zil.h>
43 #include <sys/byteorder.h>
44 #include <sys/stat.h>
45 #include <sys/mode.h>
46 #include <sys/acl.h>
47 #include <sys/atomic.h>
48 #include <sys/cred.h>
49
50 /*
51 * Functions to replay ZFS intent log (ZIL) records
52 * The functions are called through a function vector (zfs_replay_vector)
53 * which is indexed by the transaction type.
54 */
55
56 static void
57 zfs_init_vattr(vattr_t *vap, uint64_t mask, uint64_t mode,
58 uint64_t uid, uint64_t gid, uint64_t rdev, uint64_t nodeid)
59 {
60 bzero(vap, sizeof (*vap));
61 vap->va_mask = (uint_t)mask;
62 vap->va_type = IFTOVT(mode);
63 vap->va_mode = mode & MODEMASK;
64 vap->va_uid = (uid_t)(IS_EPHEMERAL(uid)) ? -1 : uid;
65 vap->va_gid = (gid_t)(IS_EPHEMERAL(gid)) ? -1 : gid;
66 vap->va_rdev = zfs_cmpldev(rdev);
67 vap->va_nodeid = nodeid;
68 }
69
70 /* ARGSUSED */
71 static int
72 zfs_replay_error(void *arg1, void *arg2, boolean_t byteswap)
73 {
74 return (SET_ERROR(ENOTSUP));
75 }
76
77 static void
78 zfs_replay_xvattr(lr_attr_t *lrattr, xvattr_t *xvap)
79 {
80 xoptattr_t *xoap = NULL;
81 uint64_t *attrs;
82 uint64_t *crtime;
83 uint32_t *bitmap;
84 void *scanstamp;
85 int i;
86
87 xvap->xva_vattr.va_mask |= AT_XVATTR;
88 if ((xoap = xva_getxoptattr(xvap)) == NULL) {
89 xvap->xva_vattr.va_mask &= ~AT_XVATTR; /* shouldn't happen */
90 return;
91 }
92
93 ASSERT(lrattr->lr_attr_masksize == xvap->xva_mapsize);
94
95 bitmap = &lrattr->lr_attr_bitmap;
96 for (i = 0; i != lrattr->lr_attr_masksize; i++, bitmap++)
97 xvap->xva_reqattrmap[i] = *bitmap;
98
99 attrs = (uint64_t *)(lrattr + lrattr->lr_attr_masksize - 1);
100 crtime = attrs + 1;
101 scanstamp = (caddr_t)(crtime + 2);
102
103 if (XVA_ISSET_REQ(xvap, XAT_HIDDEN))
104 xoap->xoa_hidden = ((*attrs & XAT0_HIDDEN) != 0);
105 if (XVA_ISSET_REQ(xvap, XAT_SYSTEM))
106 xoap->xoa_system = ((*attrs & XAT0_SYSTEM) != 0);
107 if (XVA_ISSET_REQ(xvap, XAT_ARCHIVE))
108 xoap->xoa_archive = ((*attrs & XAT0_ARCHIVE) != 0);
109 if (XVA_ISSET_REQ(xvap, XAT_READONLY))
110 xoap->xoa_readonly = ((*attrs & XAT0_READONLY) != 0);
111 if (XVA_ISSET_REQ(xvap, XAT_IMMUTABLE))
112 xoap->xoa_immutable = ((*attrs & XAT0_IMMUTABLE) != 0);
113 if (XVA_ISSET_REQ(xvap, XAT_NOUNLINK))
114 xoap->xoa_nounlink = ((*attrs & XAT0_NOUNLINK) != 0);
115 if (XVA_ISSET_REQ(xvap, XAT_APPENDONLY))
116 xoap->xoa_appendonly = ((*attrs & XAT0_APPENDONLY) != 0);
117 if (XVA_ISSET_REQ(xvap, XAT_NODUMP))
118 xoap->xoa_nodump = ((*attrs & XAT0_NODUMP) != 0);
119 if (XVA_ISSET_REQ(xvap, XAT_OPAQUE))
120 xoap->xoa_opaque = ((*attrs & XAT0_OPAQUE) != 0);
121 if (XVA_ISSET_REQ(xvap, XAT_AV_MODIFIED))
122 xoap->xoa_av_modified = ((*attrs & XAT0_AV_MODIFIED) != 0);
123 if (XVA_ISSET_REQ(xvap, XAT_AV_QUARANTINED))
124 xoap->xoa_av_quarantined =
125 ((*attrs & XAT0_AV_QUARANTINED) != 0);
126 if (XVA_ISSET_REQ(xvap, XAT_CREATETIME))
127 ZFS_TIME_DECODE(&xoap->xoa_createtime, crtime);
128 if (XVA_ISSET_REQ(xvap, XAT_AV_SCANSTAMP)) {
129 ASSERT(!XVA_ISSET_REQ(xvap, XAT_PROJID));
130
131 bcopy(scanstamp, xoap->xoa_av_scanstamp, AV_SCANSTAMP_SZ);
132 } else if (XVA_ISSET_REQ(xvap, XAT_PROJID)) {
133 /*
134 * XAT_PROJID and XAT_AV_SCANSTAMP will never be valid
135 * at the same time, so we can share the same space.
136 */
137 bcopy(scanstamp, &xoap->xoa_projid, sizeof (uint64_t));
138 }
139 if (XVA_ISSET_REQ(xvap, XAT_REPARSE))
140 xoap->xoa_reparse = ((*attrs & XAT0_REPARSE) != 0);
141 if (XVA_ISSET_REQ(xvap, XAT_OFFLINE))
142 xoap->xoa_offline = ((*attrs & XAT0_OFFLINE) != 0);
143 if (XVA_ISSET_REQ(xvap, XAT_SPARSE))
144 xoap->xoa_sparse = ((*attrs & XAT0_SPARSE) != 0);
145 if (XVA_ISSET_REQ(xvap, XAT_PROJINHERIT))
146 xoap->xoa_projinherit = ((*attrs & XAT0_PROJINHERIT) != 0);
147 }
148
149 static int
150 zfs_replay_domain_cnt(uint64_t uid, uint64_t gid)
151 {
152 uint64_t uid_idx;
153 uint64_t gid_idx;
154 int domcnt = 0;
155
156 uid_idx = FUID_INDEX(uid);
157 gid_idx = FUID_INDEX(gid);
158 if (uid_idx)
159 domcnt++;
160 if (gid_idx > 0 && gid_idx != uid_idx)
161 domcnt++;
162
163 return (domcnt);
164 }
165
166 static void *
167 zfs_replay_fuid_domain_common(zfs_fuid_info_t *fuid_infop, void *start,
168 int domcnt)
169 {
170 int i;
171
172 for (i = 0; i != domcnt; i++) {
173 fuid_infop->z_domain_table[i] = start;
174 start = (caddr_t)start + strlen(start) + 1;
175 }
176
177 return (start);
178 }
179
180 /*
181 * Set the uid/gid in the fuid_info structure.
182 */
183 static void
184 zfs_replay_fuid_ugid(zfs_fuid_info_t *fuid_infop, uint64_t uid, uint64_t gid)
185 {
186 /*
187 * If owner or group are log specific FUIDs then slurp up
188 * domain information and build zfs_fuid_info_t
189 */
190 if (IS_EPHEMERAL(uid))
191 fuid_infop->z_fuid_owner = uid;
192
193 if (IS_EPHEMERAL(gid))
194 fuid_infop->z_fuid_group = gid;
195 }
196
197 /*
198 * Load fuid domains into fuid_info_t
199 */
200 static zfs_fuid_info_t *
201 zfs_replay_fuid_domain(void *buf, void **end, uint64_t uid, uint64_t gid)
202 {
203 int domcnt;
204
205 zfs_fuid_info_t *fuid_infop;
206
207 fuid_infop = zfs_fuid_info_alloc();
208
209 domcnt = zfs_replay_domain_cnt(uid, gid);
210
211 if (domcnt == 0)
212 return (fuid_infop);
213
214 fuid_infop->z_domain_table =
215 kmem_zalloc(domcnt * sizeof (char **), KM_SLEEP);
216
217 zfs_replay_fuid_ugid(fuid_infop, uid, gid);
218
219 fuid_infop->z_domain_cnt = domcnt;
220 *end = zfs_replay_fuid_domain_common(fuid_infop, buf, domcnt);
221 return (fuid_infop);
222 }
223
224 /*
225 * load zfs_fuid_t's and fuid_domains into fuid_info_t
226 */
227 static zfs_fuid_info_t *
228 zfs_replay_fuids(void *start, void **end, int idcnt, int domcnt, uint64_t uid,
229 uint64_t gid)
230 {
231 uint64_t *log_fuid = (uint64_t *)start;
232 zfs_fuid_info_t *fuid_infop;
233 int i;
234
235 fuid_infop = zfs_fuid_info_alloc();
236 fuid_infop->z_domain_cnt = domcnt;
237
238 fuid_infop->z_domain_table =
239 kmem_zalloc(domcnt * sizeof (char **), KM_SLEEP);
240
241 for (i = 0; i != idcnt; i++) {
242 zfs_fuid_t *zfuid;
243
244 zfuid = kmem_alloc(sizeof (zfs_fuid_t), KM_SLEEP);
245 zfuid->z_logfuid = *log_fuid;
246 zfuid->z_id = -1;
247 zfuid->z_domidx = 0;
248 list_insert_tail(&fuid_infop->z_fuids, zfuid);
249 log_fuid++;
250 }
251
252 zfs_replay_fuid_ugid(fuid_infop, uid, gid);
253
254 *end = zfs_replay_fuid_domain_common(fuid_infop, log_fuid, domcnt);
255 return (fuid_infop);
256 }
257
258 static void
259 zfs_replay_swap_attrs(lr_attr_t *lrattr)
260 {
261 /* swap the lr_attr structure */
262 byteswap_uint32_array(lrattr, sizeof (*lrattr));
263 /* swap the bitmap */
264 byteswap_uint32_array(lrattr + 1, (lrattr->lr_attr_masksize - 1) *
265 sizeof (uint32_t));
266 /* swap the attributes, create time + 64 bit word for attributes */
267 byteswap_uint64_array((caddr_t)(lrattr + 1) + (sizeof (uint32_t) *
268 (lrattr->lr_attr_masksize - 1)), 3 * sizeof (uint64_t));
269 }
270
271 /*
272 * Replay file create with optional ACL, xvattr information as well
273 * as option FUID information.
274 */
275 static int
276 zfs_replay_create_acl(void *arg1, void *arg2, boolean_t byteswap)
277 {
278 zfsvfs_t *zfsvfs = arg1;
279 lr_acl_create_t *lracl = arg2;
280 char *name = NULL; /* location determined later */
281 lr_create_t *lr = (lr_create_t *)lracl;
282 znode_t *dzp;
283 vnode_t *vp = NULL;
284 xvattr_t xva;
285 int vflg = 0;
286 vsecattr_t vsec = { 0 };
287 lr_attr_t *lrattr;
288 void *aclstart;
289 void *fuidstart;
290 size_t xvatlen = 0;
291 uint64_t txtype;
292 uint64_t objid;
293 uint64_t dnodesize;
294 int error;
295
296 txtype = (lr->lr_common.lrc_txtype & ~TX_CI);
297 if (byteswap) {
298 byteswap_uint64_array(lracl, sizeof (*lracl));
299 if (txtype == TX_CREATE_ACL_ATTR ||
300 txtype == TX_MKDIR_ACL_ATTR) {
301 lrattr = (lr_attr_t *)(caddr_t)(lracl + 1);
302 zfs_replay_swap_attrs(lrattr);
303 xvatlen = ZIL_XVAT_SIZE(lrattr->lr_attr_masksize);
304 }
305
306 aclstart = (caddr_t)(lracl + 1) + xvatlen;
307 zfs_ace_byteswap(aclstart, lracl->lr_acl_bytes, B_FALSE);
308 /* swap fuids */
309 if (lracl->lr_fuidcnt) {
310 byteswap_uint64_array((caddr_t)aclstart +
311 ZIL_ACE_LENGTH(lracl->lr_acl_bytes),
312 lracl->lr_fuidcnt * sizeof (uint64_t));
313 }
314 }
315
316 if ((error = zfs_zget(zfsvfs, lr->lr_doid, &dzp)) != 0)
317 return (error);
318
319 objid = LR_FOID_GET_OBJ(lr->lr_foid);
320 dnodesize = LR_FOID_GET_SLOTS(lr->lr_foid) << DNODE_SHIFT;
321
322 xva_init(&xva);
323 zfs_init_vattr(&xva.xva_vattr, AT_TYPE | AT_MODE | AT_UID | AT_GID,
324 lr->lr_mode, lr->lr_uid, lr->lr_gid, lr->lr_rdev, objid);
325
326 /*
327 * All forms of zfs create (create, mkdir, mkxattrdir, symlink)
328 * eventually end up in zfs_mknode(), which assigns the object's
329 * creation time, generation number, and dnode size. The generic
330 * zfs_create() has no concept of these attributes, so we smuggle
331 * the values inside the vattr's otherwise unused va_ctime,
332 * va_nblocks, and va_fsid fields.
333 */
334 ZFS_TIME_DECODE(&xva.xva_vattr.va_ctime, lr->lr_crtime);
335 xva.xva_vattr.va_nblocks = lr->lr_gen;
336 xva.xva_vattr.va_fsid = dnodesize;
337
338 error = dmu_object_info(zfsvfs->z_os, lr->lr_foid, NULL);
339 if (error != ENOENT)
340 goto bail;
341
342 if (lr->lr_common.lrc_txtype & TX_CI)
343 vflg |= FIGNORECASE;
344 switch (txtype) {
345 case TX_CREATE_ACL:
346 aclstart = (caddr_t)(lracl + 1);
347 fuidstart = (caddr_t)aclstart +
348 ZIL_ACE_LENGTH(lracl->lr_acl_bytes);
349 zfsvfs->z_fuid_replay = zfs_replay_fuids(fuidstart,
350 (void *)&name, lracl->lr_fuidcnt, lracl->lr_domcnt,
351 lr->lr_uid, lr->lr_gid);
352 /*FALLTHROUGH*/
353 case TX_CREATE_ACL_ATTR:
354 if (name == NULL) {
355 lrattr = (lr_attr_t *)(caddr_t)(lracl + 1);
356 xvatlen = ZIL_XVAT_SIZE(lrattr->lr_attr_masksize);
357 xva.xva_vattr.va_mask |= AT_XVATTR;
358 zfs_replay_xvattr(lrattr, &xva);
359 }
360 vsec.vsa_mask = VSA_ACE | VSA_ACE_ACLFLAGS;
361 vsec.vsa_aclentp = (caddr_t)(lracl + 1) + xvatlen;
362 vsec.vsa_aclcnt = lracl->lr_aclcnt;
363 vsec.vsa_aclentsz = lracl->lr_acl_bytes;
364 vsec.vsa_aclflags = lracl->lr_acl_flags;
365 if (zfsvfs->z_fuid_replay == NULL) {
366 fuidstart = (caddr_t)(lracl + 1) + xvatlen +
367 ZIL_ACE_LENGTH(lracl->lr_acl_bytes);
368 zfsvfs->z_fuid_replay =
369 zfs_replay_fuids(fuidstart,
370 (void *)&name, lracl->lr_fuidcnt, lracl->lr_domcnt,
371 lr->lr_uid, lr->lr_gid);
372 }
373
374 error = VOP_CREATE(ZTOV(dzp), name, &xva.xva_vattr,
375 0, 0, &vp, kcred, vflg, NULL, &vsec);
376 break;
377 case TX_MKDIR_ACL:
378 aclstart = (caddr_t)(lracl + 1);
379 fuidstart = (caddr_t)aclstart +
380 ZIL_ACE_LENGTH(lracl->lr_acl_bytes);
381 zfsvfs->z_fuid_replay = zfs_replay_fuids(fuidstart,
382 (void *)&name, lracl->lr_fuidcnt, lracl->lr_domcnt,
383 lr->lr_uid, lr->lr_gid);
384 /*FALLTHROUGH*/
385 case TX_MKDIR_ACL_ATTR:
386 if (name == NULL) {
387 lrattr = (lr_attr_t *)(caddr_t)(lracl + 1);
388 xvatlen = ZIL_XVAT_SIZE(lrattr->lr_attr_masksize);
389 zfs_replay_xvattr(lrattr, &xva);
390 }
391 vsec.vsa_mask = VSA_ACE | VSA_ACE_ACLFLAGS;
392 vsec.vsa_aclentp = (caddr_t)(lracl + 1) + xvatlen;
393 vsec.vsa_aclcnt = lracl->lr_aclcnt;
394 vsec.vsa_aclentsz = lracl->lr_acl_bytes;
395 vsec.vsa_aclflags = lracl->lr_acl_flags;
396 if (zfsvfs->z_fuid_replay == NULL) {
397 fuidstart = (caddr_t)(lracl + 1) + xvatlen +
398 ZIL_ACE_LENGTH(lracl->lr_acl_bytes);
399 zfsvfs->z_fuid_replay =
400 zfs_replay_fuids(fuidstart,
401 (void *)&name, lracl->lr_fuidcnt, lracl->lr_domcnt,
402 lr->lr_uid, lr->lr_gid);
403 }
404 error = VOP_MKDIR(ZTOV(dzp), name, &xva.xva_vattr,
405 &vp, kcred, NULL, vflg, &vsec);
406 break;
407 default:
408 error = SET_ERROR(ENOTSUP);
409 }
410
411 bail:
412 if (error == 0 && vp != NULL)
413 VN_RELE(vp);
414
415 VN_RELE(ZTOV(dzp));
416
417 if (zfsvfs->z_fuid_replay)
418 zfs_fuid_info_free(zfsvfs->z_fuid_replay);
419 zfsvfs->z_fuid_replay = NULL;
420
421 return (error);
422 }
423
424 static int
425 zfs_replay_create(void *arg1, void *arg2, boolean_t byteswap)
426 {
427 zfsvfs_t *zfsvfs = arg1;
428 lr_create_t *lr = arg2;
429 char *name = NULL; /* location determined later */
430 char *link; /* symlink content follows name */
431 znode_t *dzp;
432 vnode_t *vp = NULL;
433 xvattr_t xva;
434 int vflg = 0;
435 size_t lrsize = sizeof (lr_create_t);
436 lr_attr_t *lrattr;
437 void *start;
438 size_t xvatlen;
439 uint64_t txtype;
440 int error;
441
442 txtype = (lr->lr_common.lrc_txtype & ~TX_CI);
443 if (byteswap) {
444 byteswap_uint64_array(lr, sizeof (*lr));
445 if (txtype == TX_CREATE_ATTR || txtype == TX_MKDIR_ATTR)
446 zfs_replay_swap_attrs((lr_attr_t *)(lr + 1));
447 }
448
449
450 if ((error = zfs_zget(zfsvfs, lr->lr_doid, &dzp)) != 0)
451 return (error);
452
453 uint64_t objid = LR_FOID_GET_OBJ(lr->lr_foid);
454 int dnodesize = LR_FOID_GET_SLOTS(lr->lr_foid) << DNODE_SHIFT;
455
456 xva_init(&xva);
457 zfs_init_vattr(&xva.xva_vattr, AT_TYPE | AT_MODE | AT_UID | AT_GID,
458 lr->lr_mode, lr->lr_uid, lr->lr_gid, lr->lr_rdev, objid);
459
460 /*
461 * All forms of zfs create (create, mkdir, mkxattrdir, symlink)
462 * eventually end up in zfs_mknode(), which assigns the object's
463 * creation time, generation number, and dnode slot count. The
464 * generic zfs_create() has no concept of these attributes, so
465 * we smuggle the values inside the vattr's otherwise unused
466 * va_ctime, va_nblocks and va_fsid fields.
467 */
468 ZFS_TIME_DECODE(&xva.xva_vattr.va_ctime, lr->lr_crtime);
469 xva.xva_vattr.va_nblocks = lr->lr_gen;
470 xva.xva_vattr.va_fsid = dnodesize;
471
472 error = dmu_object_info(zfsvfs->z_os, objid, NULL);
473 if (error != ENOENT)
474 goto out;
475
476 if (lr->lr_common.lrc_txtype & TX_CI)
477 vflg |= FIGNORECASE;
478
479 /*
480 * Symlinks don't have fuid info, and CIFS never creates
481 * symlinks.
482 *
483 * The _ATTR versions will grab the fuid info in their subcases.
484 */
485 if ((int)lr->lr_common.lrc_txtype != TX_SYMLINK &&
486 (int)lr->lr_common.lrc_txtype != TX_MKDIR_ATTR &&
487 (int)lr->lr_common.lrc_txtype != TX_CREATE_ATTR) {
488 start = (lr + 1);
489 zfsvfs->z_fuid_replay =
490 zfs_replay_fuid_domain(start, &start,
491 lr->lr_uid, lr->lr_gid);
492 }
493
494 switch (txtype) {
495 case TX_CREATE_ATTR:
496 lrattr = (lr_attr_t *)(caddr_t)(lr + 1);
497 xvatlen = ZIL_XVAT_SIZE(lrattr->lr_attr_masksize);
498 zfs_replay_xvattr((lr_attr_t *)((caddr_t)lr + lrsize), &xva);
499 start = (caddr_t)(lr + 1) + xvatlen;
500 zfsvfs->z_fuid_replay =
501 zfs_replay_fuid_domain(start, &start,
502 lr->lr_uid, lr->lr_gid);
503 name = (char *)start;
504
505 /*FALLTHROUGH*/
506 case TX_CREATE:
507 if (name == NULL)
508 name = (char *)start;
509
510 error = VOP_CREATE(ZTOV(dzp), name, &xva.xva_vattr,
511 0, 0, &vp, kcred, vflg, NULL, NULL);
512 break;
513 case TX_MKDIR_ATTR:
514 lrattr = (lr_attr_t *)(caddr_t)(lr + 1);
515 xvatlen = ZIL_XVAT_SIZE(lrattr->lr_attr_masksize);
516 zfs_replay_xvattr((lr_attr_t *)((caddr_t)lr + lrsize), &xva);
517 start = (caddr_t)(lr + 1) + xvatlen;
518 zfsvfs->z_fuid_replay =
519 zfs_replay_fuid_domain(start, &start,
520 lr->lr_uid, lr->lr_gid);
521 name = (char *)start;
522
523 /*FALLTHROUGH*/
524 case TX_MKDIR:
525 if (name == NULL)
526 name = (char *)(lr + 1);
527
528 error = VOP_MKDIR(ZTOV(dzp), name, &xva.xva_vattr,
529 &vp, kcred, NULL, vflg, NULL);
530 break;
531 case TX_MKXATTR:
532 error = zfs_make_xattrdir(dzp, &xva.xva_vattr, &vp, kcred);
533 break;
534 case TX_SYMLINK:
535 name = (char *)(lr + 1);
536 link = name + strlen(name) + 1;
537 error = VOP_SYMLINK(ZTOV(dzp), name, &xva.xva_vattr,
538 link, kcred, NULL, vflg);
539 break;
540 default:
541 error = SET_ERROR(ENOTSUP);
542 }
543
544 out:
545 if (error == 0 && vp != NULL)
546 VN_RELE(vp);
547
548 VN_RELE(ZTOV(dzp));
549
550 if (zfsvfs->z_fuid_replay)
551 zfs_fuid_info_free(zfsvfs->z_fuid_replay);
552 zfsvfs->z_fuid_replay = NULL;
553 return (error);
554 }
555
556 static int
557 zfs_replay_remove(void *arg1, void *arg2, boolean_t byteswap)
558 {
559 zfsvfs_t *zfsvfs = arg1;
560 lr_remove_t *lr = arg2;
561 char *name = (char *)(lr + 1); /* name follows lr_remove_t */
562 znode_t *dzp;
563 int error;
564 int vflg = 0;
565
566 if (byteswap)
567 byteswap_uint64_array(lr, sizeof (*lr));
568
569 if ((error = zfs_zget(zfsvfs, lr->lr_doid, &dzp)) != 0)
570 return (error);
571
572 if (lr->lr_common.lrc_txtype & TX_CI)
573 vflg |= FIGNORECASE;
574
575 switch ((int)lr->lr_common.lrc_txtype) {
576 case TX_REMOVE:
577 error = VOP_REMOVE(ZTOV(dzp), name, kcred, NULL, vflg);
578 break;
579 case TX_RMDIR:
580 error = VOP_RMDIR(ZTOV(dzp), name, NULL, kcred, NULL, vflg);
581 break;
582 default:
583 error = SET_ERROR(ENOTSUP);
584 }
585
586 VN_RELE(ZTOV(dzp));
587
588 return (error);
589 }
590
591 static int
592 zfs_replay_link(void *arg1, void *arg2, boolean_t byteswap)
593 {
594 zfsvfs_t *zfsvfs = arg1;
595 lr_link_t *lr = arg2;
596 char *name = (char *)(lr + 1); /* name follows lr_link_t */
597 znode_t *dzp, *zp;
598 int error;
599 int vflg = 0;
600
601 if (byteswap)
602 byteswap_uint64_array(lr, sizeof (*lr));
603
604 if ((error = zfs_zget(zfsvfs, lr->lr_doid, &dzp)) != 0)
605 return (error);
606
607 if ((error = zfs_zget(zfsvfs, lr->lr_link_obj, &zp)) != 0) {
608 VN_RELE(ZTOV(dzp));
609 return (error);
610 }
611
612 if (lr->lr_common.lrc_txtype & TX_CI)
613 vflg |= FIGNORECASE;
614
615 error = VOP_LINK(ZTOV(dzp), ZTOV(zp), name, kcred, NULL, vflg);
616
617 VN_RELE(ZTOV(zp));
618 VN_RELE(ZTOV(dzp));
619
620 return (error);
621 }
622
623 static int
624 zfs_replay_rename(void *arg1, void *arg2, boolean_t byteswap)
625 {
626 zfsvfs_t *zfsvfs = arg1;
627 lr_rename_t *lr = arg2;
628 char *sname = (char *)(lr + 1); /* sname and tname follow lr_rename_t */
629 char *tname = sname + strlen(sname) + 1;
630 znode_t *sdzp, *tdzp;
631 int error;
632 int vflg = 0;
633
634 if (byteswap)
635 byteswap_uint64_array(lr, sizeof (*lr));
636
637 if ((error = zfs_zget(zfsvfs, lr->lr_sdoid, &sdzp)) != 0)
638 return (error);
639
640 if ((error = zfs_zget(zfsvfs, lr->lr_tdoid, &tdzp)) != 0) {
641 VN_RELE(ZTOV(sdzp));
642 return (error);
643 }
644
645 if (lr->lr_common.lrc_txtype & TX_CI)
646 vflg |= FIGNORECASE;
647
648 error = VOP_RENAME(ZTOV(sdzp), sname, ZTOV(tdzp), tname, kcred,
649 NULL, vflg);
650
651 VN_RELE(ZTOV(tdzp));
652 VN_RELE(ZTOV(sdzp));
653
654 return (error);
655 }
656
657 static int
658 zfs_replay_write(void *arg1, void *arg2, boolean_t byteswap)
659 {
660 zfsvfs_t *zfsvfs = arg1;
661 lr_write_t *lr = arg2;
662 char *data = (char *)(lr + 1); /* data follows lr_write_t */
663 znode_t *zp;
664 int error;
665 ssize_t resid;
666 uint64_t eod, offset, length;
667
668 if (byteswap)
669 byteswap_uint64_array(lr, sizeof (*lr));
670
671 if ((error = zfs_zget(zfsvfs, lr->lr_foid, &zp)) != 0) {
672 /*
673 * As we can log writes out of order, it's possible the
674 * file has been removed. In this case just drop the write
675 * and return success.
676 */
677 if (error == ENOENT)
678 error = 0;
679 return (error);
680 }
681
682 offset = lr->lr_offset;
683 length = lr->lr_length;
684 eod = offset + length; /* end of data for this write */
685
686 /*
687 * This may be a write from a dmu_sync() for a whole block,
688 * and may extend beyond the current end of the file.
689 * We can't just replay what was written for this TX_WRITE as
690 * a future TX_WRITE2 may extend the eof and the data for that
691 * write needs to be there. So we write the whole block and
692 * reduce the eof. This needs to be done within the single dmu
693 * transaction created within vn_rdwr -> zfs_write. So a possible
694 * new end of file is passed through in zfsvfs->z_replay_eof
695 */
696
697 zfsvfs->z_replay_eof = 0; /* 0 means don't change end of file */
698
699 /* If it's a dmu_sync() block, write the whole block */
700 if (lr->lr_common.lrc_reclen == sizeof (lr_write_t)) {
701 uint64_t blocksize = BP_GET_LSIZE(&lr->lr_blkptr);
702 if (length < blocksize) {
703 offset -= offset % blocksize;
704 length = blocksize;
705 }
706 if (zp->z_size < eod)
707 zfsvfs->z_replay_eof = eod;
708 }
709
710 error = vn_rdwr(UIO_WRITE, ZTOV(zp), data, length, offset,
711 UIO_SYSSPACE, 0, RLIM64_INFINITY, kcred, &resid);
712
713 VN_RELE(ZTOV(zp));
714 zfsvfs->z_replay_eof = 0; /* safety */
715
716 return (error);
717 }
718
719 /*
720 * TX_WRITE2 are only generated when dmu_sync() returns EALREADY
721 * meaning the pool block is already being synced. So now that we always write
722 * out full blocks, all we have to do is expand the eof if
723 * the file is grown.
724 */
725 static int
726 zfs_replay_write2(void *arg1, void *arg2, boolean_t byteswap)
727 {
728 zfsvfs_t *zfsvfs = arg1;
729 lr_write_t *lr = arg2;
730 znode_t *zp;
731 int error;
732 uint64_t end;
733
734 if (byteswap)
735 byteswap_uint64_array(lr, sizeof (*lr));
736
737 if ((error = zfs_zget(zfsvfs, lr->lr_foid, &zp)) != 0)
738 return (error);
739
740 top:
741 end = lr->lr_offset + lr->lr_length;
742 if (end > zp->z_size) {
743 dmu_tx_t *tx = dmu_tx_create(zfsvfs->z_os);
744
745 zp->z_size = end;
746 dmu_tx_hold_sa(tx, zp->z_sa_hdl, B_FALSE);
747 error = dmu_tx_assign(tx, TXG_WAIT);
748 if (error) {
749 VN_RELE(ZTOV(zp));
750 if (error == ERESTART) {
751 dmu_tx_wait(tx);
752 dmu_tx_abort(tx);
753 goto top;
754 }
755 dmu_tx_abort(tx);
756 return (error);
757 }
758 (void) sa_update(zp->z_sa_hdl, SA_ZPL_SIZE(zfsvfs),
759 (void *)&zp->z_size, sizeof (uint64_t), tx);
760
761 /* Ensure the replayed seq is updated */
762 (void) zil_replaying(zfsvfs->z_log, tx);
763
764 dmu_tx_commit(tx);
765 }
766
767 VN_RELE(ZTOV(zp));
768
769 return (error);
770 }
771
772 static int
773 zfs_replay_truncate(void *arg1, void *arg2, boolean_t byteswap)
774 {
775 zfsvfs_t *zfsvfs = arg1;
776 lr_truncate_t *lr = arg2;
777 znode_t *zp;
778 flock64_t fl;
779 int error;
780
781 if (byteswap)
782 byteswap_uint64_array(lr, sizeof (*lr));
783
784 if ((error = zfs_zget(zfsvfs, lr->lr_foid, &zp)) != 0)
785 return (error);
786
787 bzero(&fl, sizeof (fl));
788 fl.l_type = F_WRLCK;
789 fl.l_whence = 0;
790 fl.l_start = lr->lr_offset;
791 fl.l_len = lr->lr_length;
792
793 error = VOP_SPACE(ZTOV(zp), F_FREESP, &fl, FWRITE | FOFFMAX,
794 lr->lr_offset, kcred, NULL);
795
796 VN_RELE(ZTOV(zp));
797
798 return (error);
799 }
800
801 static int
802 zfs_replay_setattr(void *arg1, void *arg2, boolean_t byteswap)
803 {
804 zfsvfs_t *zfsvfs = arg1;
805 lr_setattr_t *lr = arg2;
806 znode_t *zp;
807 xvattr_t xva;
808 vattr_t *vap = &xva.xva_vattr;
809 int error;
810 void *start;
811
812 xva_init(&xva);
813 if (byteswap) {
814 byteswap_uint64_array(lr, sizeof (*lr));
815
816 if ((lr->lr_mask & AT_XVATTR) &&
817 zfsvfs->z_version >= ZPL_VERSION_INITIAL)
818 zfs_replay_swap_attrs((lr_attr_t *)(lr + 1));
819 }
820
821 if ((error = zfs_zget(zfsvfs, lr->lr_foid, &zp)) != 0)
822 return (error);
823
824 zfs_init_vattr(vap, lr->lr_mask, lr->lr_mode,
825 lr->lr_uid, lr->lr_gid, 0, lr->lr_foid);
826
827 vap->va_size = lr->lr_size;
828 ZFS_TIME_DECODE(&vap->va_atime, lr->lr_atime);
829 ZFS_TIME_DECODE(&vap->va_mtime, lr->lr_mtime);
830
831 /*
832 * Fill in xvattr_t portions if necessary.
833 */
834
835 start = (lr_setattr_t *)(lr + 1);
836 if (vap->va_mask & AT_XVATTR) {
837 zfs_replay_xvattr((lr_attr_t *)start, &xva);
838 start = (caddr_t)start +
839 ZIL_XVAT_SIZE(((lr_attr_t *)start)->lr_attr_masksize);
840 } else
841 xva.xva_vattr.va_mask &= ~AT_XVATTR;
842
843 zfsvfs->z_fuid_replay = zfs_replay_fuid_domain(start, &start,
844 lr->lr_uid, lr->lr_gid);
845
846 error = VOP_SETATTR(ZTOV(zp), vap, 0, kcred, NULL);
847
848 zfs_fuid_info_free(zfsvfs->z_fuid_replay);
849 zfsvfs->z_fuid_replay = NULL;
850 VN_RELE(ZTOV(zp));
851
852 return (error);
853 }
854
855 static int
856 zfs_replay_acl_v0(void *arg1, void *arg2, boolean_t byteswap)
857 {
858 zfsvfs_t *zfsvfs = arg1;
859 lr_acl_v0_t *lr = arg2;
860 ace_t *ace = (ace_t *)(lr + 1); /* ace array follows lr_acl_t */
861 vsecattr_t vsa;
862 znode_t *zp;
863 int error;
864
865 if (byteswap) {
866 byteswap_uint64_array(lr, sizeof (*lr));
867 zfs_oldace_byteswap(ace, lr->lr_aclcnt);
868 }
869
870 if ((error = zfs_zget(zfsvfs, lr->lr_foid, &zp)) != 0)
871 return (error);
872
873 bzero(&vsa, sizeof (vsa));
874 vsa.vsa_mask = VSA_ACE | VSA_ACECNT;
875 vsa.vsa_aclcnt = lr->lr_aclcnt;
876 vsa.vsa_aclentsz = sizeof (ace_t) * vsa.vsa_aclcnt;
877 vsa.vsa_aclflags = 0;
878 vsa.vsa_aclentp = ace;
879
880 error = VOP_SETSECATTR(ZTOV(zp), &vsa, 0, kcred, NULL);
881
882 VN_RELE(ZTOV(zp));
883
884 return (error);
885 }
886
887 /*
888 * Replaying ACLs is complicated by FUID support.
889 * The log record may contain some optional data
890 * to be used for replaying FUID's. These pieces
891 * are the actual FUIDs that were created initially.
892 * The FUID table index may no longer be valid and
893 * during zfs_create() a new index may be assigned.
894 * Because of this the log will contain the original
895 * doman+rid in order to create a new FUID.
896 *
897 * The individual ACEs may contain an ephemeral uid/gid which is no
898 * longer valid and will need to be replaced with an actual FUID.
899 *
900 */
901 static int
902 zfs_replay_acl(void *arg1, void *arg2, boolean_t byteswap)
903 {
904 zfsvfs_t *zfsvfs = arg1;
905 lr_acl_t *lr = arg2;
906 ace_t *ace = (ace_t *)(lr + 1);
907 vsecattr_t vsa;
908 znode_t *zp;
909 int error;
910
911 if (byteswap) {
912 byteswap_uint64_array(lr, sizeof (*lr));
913 zfs_ace_byteswap(ace, lr->lr_acl_bytes, B_FALSE);
914 if (lr->lr_fuidcnt) {
915 byteswap_uint64_array((caddr_t)ace +
916 ZIL_ACE_LENGTH(lr->lr_acl_bytes),
917 lr->lr_fuidcnt * sizeof (uint64_t));
918 }
919 }
920
921 if ((error = zfs_zget(zfsvfs, lr->lr_foid, &zp)) != 0)
922 return (error);
923
924 bzero(&vsa, sizeof (vsa));
925 vsa.vsa_mask = VSA_ACE | VSA_ACECNT | VSA_ACE_ACLFLAGS;
926 vsa.vsa_aclcnt = lr->lr_aclcnt;
927 vsa.vsa_aclentp = ace;
928 vsa.vsa_aclentsz = lr->lr_acl_bytes;
929 vsa.vsa_aclflags = lr->lr_acl_flags;
930
931 if (lr->lr_fuidcnt) {
932 void *fuidstart = (caddr_t)ace +
933 ZIL_ACE_LENGTH(lr->lr_acl_bytes);
934
935 zfsvfs->z_fuid_replay =
936 zfs_replay_fuids(fuidstart, &fuidstart,
937 lr->lr_fuidcnt, lr->lr_domcnt, 0, 0);
938 }
939
940 error = VOP_SETSECATTR(ZTOV(zp), &vsa, 0, kcred, NULL);
941
942 if (zfsvfs->z_fuid_replay)
943 zfs_fuid_info_free(zfsvfs->z_fuid_replay);
944
945 zfsvfs->z_fuid_replay = NULL;
946 VN_RELE(ZTOV(zp));
947
948 return (error);
949 }
950
951 /*
952 * Callback vectors for replaying records
953 */
954 zil_replay_func_t *zfs_replay_vector[TX_MAX_TYPE] = {
955 zfs_replay_error, /* 0 no such transaction type */
956 zfs_replay_create, /* TX_CREATE */
957 zfs_replay_create, /* TX_MKDIR */
958 zfs_replay_create, /* TX_MKXATTR */
959 zfs_replay_create, /* TX_SYMLINK */
960 zfs_replay_remove, /* TX_REMOVE */
961 zfs_replay_remove, /* TX_RMDIR */
962 zfs_replay_link, /* TX_LINK */
963 zfs_replay_rename, /* TX_RENAME */
964 zfs_replay_write, /* TX_WRITE */
965 zfs_replay_truncate, /* TX_TRUNCATE */
966 zfs_replay_setattr, /* TX_SETATTR */
967 zfs_replay_acl_v0, /* TX_ACL_V0 */
968 zfs_replay_acl, /* TX_ACL */
969 zfs_replay_create_acl, /* TX_CREATE_ACL */
970 zfs_replay_create, /* TX_CREATE_ATTR */
971 zfs_replay_create_acl, /* TX_CREATE_ACL_ATTR */
972 zfs_replay_create_acl, /* TX_MKDIR_ACL */
973 zfs_replay_create, /* TX_MKDIR_ATTR */
974 zfs_replay_create_acl, /* TX_MKDIR_ACL_ATTR */
975 zfs_replay_write2, /* TX_WRITE2 */
976 };