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 2008 Sun Microsystems, Inc. All rights reserved.
23 * Use is subject to license terms.
24 */
25
26#pragma ident "%Z%%M% %I% %E% SMI"
27
28#include <sys/types.h>
29#include <sys/param.h>
30#include <sys/systm.h>
31#include <sys/sysmacros.h>
32#include <sys/cmn_err.h>
33#include <sys/kmem.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/spa.h>
43#include <sys/zil.h>
44#include <sys/byteorder.h>
45#include <sys/stat.h>
46#include <sys/acl.h>
47#include <sys/atomic.h>
48#include <sys/cred.h>
49#include <sys/namei.h>
50
51/*
52 * Functions to replay ZFS intent log (ZIL) records
53 * The functions are called through a function vector (zfs_replay_vector)
54 * which is indexed by the transaction type.
55 */
56
57static void
58zfs_init_vattr(vattr_t *vap, uint64_t mask, uint64_t mode,
59 uint64_t uid, uint64_t gid, uint64_t rdev, uint64_t nodeid)
60{
61 VATTR_NULL(vap);
62 vap->va_mask = (uint_t)mask;
63 if (mask & AT_TYPE)
64 vap->va_type = IFTOVT(mode);
65 if (mask & AT_MODE)
66 vap->va_mode = mode & MODEMASK;
67 if (mask & AT_UID)
68 vap->va_uid = (uid_t)(IS_EPHEMERAL(uid)) ? -1 : uid;
69 if (mask & AT_GID)
70 vap->va_gid = (gid_t)(IS_EPHEMERAL(gid)) ? -1 : gid;
71 vap->va_rdev = zfs_cmpldev(rdev);
72 vap->va_nodeid = nodeid;
73}
74
75/* ARGSUSED */
76static int
77zfs_replay_error(zfsvfs_t *zfsvfs, lr_t *lr, boolean_t byteswap)
78{
79 return (ENOTSUP);
80}
81
82static void
83zfs_replay_xvattr(lr_attr_t *lrattr, xvattr_t *xvap)
84{
85 xoptattr_t *xoap = NULL;
86 uint64_t *attrs;
87 uint64_t *crtime;
88 uint32_t *bitmap;
89 void *scanstamp;
90 int i;
91
92 xvap->xva_vattr.va_mask |= AT_XVATTR;
93 if ((xoap = xva_getxoptattr(xvap)) == NULL) {
94 xvap->xva_vattr.va_mask &= ~AT_XVATTR; /* shouldn't happen */
95 return;
96 }
97
98 ASSERT(lrattr->lr_attr_masksize == xvap->xva_mapsize);
99
100 bitmap = &lrattr->lr_attr_bitmap;
101 for (i = 0; i != lrattr->lr_attr_masksize; i++, bitmap++)
102 xvap->xva_reqattrmap[i] = *bitmap;
103
104 attrs = (uint64_t *)(lrattr + lrattr->lr_attr_masksize - 1);
105 crtime = attrs + 1;
106 scanstamp = (caddr_t)(crtime + 2);
107
108 if (XVA_ISSET_REQ(xvap, XAT_HIDDEN))
109 xoap->xoa_hidden = ((*attrs & XAT0_HIDDEN) != 0);
110 if (XVA_ISSET_REQ(xvap, XAT_SYSTEM))
111 xoap->xoa_system = ((*attrs & XAT0_SYSTEM) != 0);
112 if (XVA_ISSET_REQ(xvap, XAT_ARCHIVE))
113 xoap->xoa_archive = ((*attrs & XAT0_ARCHIVE) != 0);
114 if (XVA_ISSET_REQ(xvap, XAT_READONLY))
115 xoap->xoa_readonly = ((*attrs & XAT0_READONLY) != 0);
116 if (XVA_ISSET_REQ(xvap, XAT_IMMUTABLE))
117 xoap->xoa_immutable = ((*attrs & XAT0_IMMUTABLE) != 0);
118 if (XVA_ISSET_REQ(xvap, XAT_NOUNLINK))
119 xoap->xoa_nounlink = ((*attrs & XAT0_NOUNLINK) != 0);
120 if (XVA_ISSET_REQ(xvap, XAT_APPENDONLY))
121 xoap->xoa_appendonly = ((*attrs & XAT0_APPENDONLY) != 0);
122 if (XVA_ISSET_REQ(xvap, XAT_NODUMP))
123 xoap->xoa_nodump = ((*attrs & XAT0_NODUMP) != 0);
124 if (XVA_ISSET_REQ(xvap, XAT_OPAQUE))
125 xoap->xoa_opaque = ((*attrs & XAT0_OPAQUE) != 0);
126 if (XVA_ISSET_REQ(xvap, XAT_AV_MODIFIED))
127 xoap->xoa_av_modified = ((*attrs & XAT0_AV_MODIFIED) != 0);
128 if (XVA_ISSET_REQ(xvap, XAT_AV_QUARANTINED))
129 xoap->xoa_av_quarantined =
130 ((*attrs & XAT0_AV_QUARANTINED) != 0);
131 if (XVA_ISSET_REQ(xvap, XAT_CREATETIME))
132 ZFS_TIME_DECODE(&xoap->xoa_createtime, crtime);
133 if (XVA_ISSET_REQ(xvap, XAT_AV_SCANSTAMP))
134 bcopy(scanstamp, xoap->xoa_av_scanstamp, AV_SCANSTAMP_SZ);
135}
136
137static int
138zfs_replay_domain_cnt(uint64_t uid, uint64_t gid)
139{
140 uint64_t uid_idx;
141 uint64_t gid_idx;
142 int domcnt = 0;
143
144 uid_idx = FUID_INDEX(uid);
145 gid_idx = FUID_INDEX(gid);
146 if (uid_idx)
147 domcnt++;
148 if (gid_idx > 0 && gid_idx != uid_idx)
149 domcnt++;
150
151 return (domcnt);
152}
153
154static void *
155zfs_replay_fuid_domain_common(zfs_fuid_info_t *fuid_infop, void *start,
156 int domcnt)
157{
158 int i;
159
160 for (i = 0; i != domcnt; i++) {
161 fuid_infop->z_domain_table[i] = start;
162 start = (caddr_t)start + strlen(start) + 1;
163 }
164
165 return (start);
166}
167
168/*
169 * Set the uid/gid in the fuid_info structure.
170 */
171static void
172zfs_replay_fuid_ugid(zfs_fuid_info_t *fuid_infop, uint64_t uid, uint64_t gid)
173{
174 /*
175 * If owner or group are log specific FUIDs then slurp up
176 * domain information and build zfs_fuid_info_t
177 */
178 if (IS_EPHEMERAL(uid))
179 fuid_infop->z_fuid_owner = uid;
180
181 if (IS_EPHEMERAL(gid))
182 fuid_infop->z_fuid_group = gid;
183}
184
185/*
186 * Load fuid domains into fuid_info_t
187 */
188static zfs_fuid_info_t *
189zfs_replay_fuid_domain(void *buf, void **end, uint64_t uid, uint64_t gid)
190{
191 int domcnt;
192
193 zfs_fuid_info_t *fuid_infop;
194
195 fuid_infop = zfs_fuid_info_alloc();
196
197 domcnt = zfs_replay_domain_cnt(uid, gid);
198
199 if (domcnt == 0)
200 return (fuid_infop);
201
202 fuid_infop->z_domain_table =
203 kmem_zalloc(domcnt * sizeof (char **), KM_SLEEP);
204
205 zfs_replay_fuid_ugid(fuid_infop, uid, gid);
206
207 fuid_infop->z_domain_cnt = domcnt;
208 *end = zfs_replay_fuid_domain_common(fuid_infop, buf, domcnt);
209 return (fuid_infop);
210}
211
212/*
213 * load zfs_fuid_t's and fuid_domains into fuid_info_t
214 */
215static zfs_fuid_info_t *
216zfs_replay_fuids(void *start, void **end, int idcnt, int domcnt, uint64_t uid,
217 uint64_t gid)
218{
219 uint64_t *log_fuid = (uint64_t *)start;
220 zfs_fuid_info_t *fuid_infop;
221 int i;
222
223 fuid_infop = zfs_fuid_info_alloc();
224 fuid_infop->z_domain_cnt = domcnt;
225
226 fuid_infop->z_domain_table =
227 kmem_zalloc(domcnt * sizeof (char **), KM_SLEEP);
228
229 for (i = 0; i != idcnt; i++) {
230 zfs_fuid_t *zfuid;
231
232 zfuid = kmem_alloc(sizeof (zfs_fuid_t), KM_SLEEP);
233 zfuid->z_logfuid = *log_fuid;
234 zfuid->z_id = -1;
235 zfuid->z_domidx = 0;
236 list_insert_tail(&fuid_infop->z_fuids, zfuid);
237 log_fuid++;
238 }
239
240 zfs_replay_fuid_ugid(fuid_infop, uid, gid);
241
242 *end = zfs_replay_fuid_domain_common(fuid_infop, log_fuid, domcnt);
243 return (fuid_infop);
244}
245
246static void
247zfs_replay_swap_attrs(lr_attr_t *lrattr)
248{
249 /* swap the lr_attr structure */
250 byteswap_uint32_array(lrattr, sizeof (*lrattr));
251 /* swap the bitmap */
252 byteswap_uint32_array(lrattr + 1, (lrattr->lr_attr_masksize - 1) *
253 sizeof (uint32_t));
254 /* swap the attributes, create time + 64 bit word for attributes */
255 byteswap_uint64_array((caddr_t)(lrattr + 1) + (sizeof (uint32_t) *
256 (lrattr->lr_attr_masksize - 1)), 3 * sizeof (uint64_t));
257}
258
259/*
260 * Replay file create with optional ACL, xvattr information as well
261 * as option FUID information.
262 */
263static int
264zfs_replay_create_acl(zfsvfs_t *zfsvfs,
265 lr_acl_create_t *lracl, boolean_t byteswap)
266{
267 char *name = NULL; /* location determined later */
268 lr_create_t *lr = (lr_create_t *)lracl;
269 znode_t *dzp;
270 vnode_t *vp = NULL;
271 xvattr_t xva;
272 int vflg = 0;
273 vsecattr_t vsec = { 0 };
274 lr_attr_t *lrattr;
275 void *aclstart;
276 void *fuidstart;
277 size_t xvatlen = 0;
278 uint64_t txtype;
279 int error;
280
|
| 281 txtype = (lr->lr_common.lrc_txtype & ~TX_CI); |
282 if (byteswap) {
283 byteswap_uint64_array(lracl, sizeof (*lracl));
|
283 txtype = (int)lr->lr_common.lrc_txtype;
|
284 if (txtype == TX_CREATE_ACL_ATTR ||
285 txtype == TX_MKDIR_ACL_ATTR) {
286 lrattr = (lr_attr_t *)(caddr_t)(lracl + 1);
287 zfs_replay_swap_attrs(lrattr);
288 xvatlen = ZIL_XVAT_SIZE(lrattr->lr_attr_masksize);
289 }
290
291 aclstart = (caddr_t)(lracl + 1) + xvatlen;
292 zfs_ace_byteswap(aclstart, lracl->lr_acl_bytes, B_FALSE);
293 /* swap fuids */
294 if (lracl->lr_fuidcnt) {
295 byteswap_uint64_array((caddr_t)aclstart +
296 ZIL_ACE_LENGTH(lracl->lr_acl_bytes),
297 lracl->lr_fuidcnt * sizeof (uint64_t));
298 }
299 }
300
301 if ((error = zfs_zget(zfsvfs, lr->lr_doid, &dzp)) != 0)
302 return (error);
303
304 xva_init(&xva);
305 zfs_init_vattr(&xva.xva_vattr, AT_TYPE | AT_MODE | AT_UID | AT_GID,
306 lr->lr_mode, lr->lr_uid, lr->lr_gid, lr->lr_rdev, lr->lr_foid);
307
308 /*
309 * All forms of zfs create (create, mkdir, mkxattrdir, symlink)
310 * eventually end up in zfs_mknode(), which assigns the object's
311 * creation time and generation number. The generic VOP_CREATE()
312 * doesn't have either concept, so we smuggle the values inside
313 * the vattr's otherwise unused va_ctime and va_nblocks fields.
314 */
315 ZFS_TIME_DECODE(&xva.xva_vattr.va_ctime, lr->lr_crtime);
316 xva.xva_vattr.va_nblocks = lr->lr_gen;
317
318 error = dmu_object_info(zfsvfs->z_os, lr->lr_foid, NULL);
319 if (error != ENOENT)
320 goto bail;
321
322 if (lr->lr_common.lrc_txtype & TX_CI)
323 vflg |= FIGNORECASE;
|
324 switch ((int)lr->lr_common.lrc_txtype) {
|
| 324 switch (txtype) { |
325 case TX_CREATE_ACL:
326 aclstart = (caddr_t)(lracl + 1);
327 fuidstart = (caddr_t)aclstart +
328 ZIL_ACE_LENGTH(lracl->lr_acl_bytes);
329 zfsvfs->z_fuid_replay = zfs_replay_fuids(fuidstart,
330 (void *)&name, lracl->lr_fuidcnt, lracl->lr_domcnt,
331 lr->lr_uid, lr->lr_gid);
332 /*FALLTHROUGH*/
333 case TX_CREATE_ACL_ATTR:
334 if (name == NULL) {
335 lrattr = (lr_attr_t *)(caddr_t)(lracl + 1);
336 xvatlen = ZIL_XVAT_SIZE(lrattr->lr_attr_masksize);
337 xva.xva_vattr.va_mask |= AT_XVATTR;
338 zfs_replay_xvattr(lrattr, &xva);
339 }
340 vsec.vsa_mask = VSA_ACE | VSA_ACE_ACLFLAGS;
341 vsec.vsa_aclentp = (caddr_t)(lracl + 1) + xvatlen;
342 vsec.vsa_aclcnt = lracl->lr_aclcnt;
343 vsec.vsa_aclentsz = lracl->lr_acl_bytes;
344 vsec.vsa_aclflags = lracl->lr_acl_flags;
345 if (zfsvfs->z_fuid_replay == NULL) {
346 fuidstart = (caddr_t)(lracl + 1) + xvatlen +
347 ZIL_ACE_LENGTH(lracl->lr_acl_bytes);
348 zfsvfs->z_fuid_replay =
349 zfs_replay_fuids(fuidstart,
350 (void *)&name, lracl->lr_fuidcnt, lracl->lr_domcnt,
351 lr->lr_uid, lr->lr_gid);
352 }
353
354#ifdef TODO
355 error = VOP_CREATE(ZTOV(dzp), name, &xva.xva_vattr,
356 0, 0, &vp, kcred, vflg, NULL, &vsec);
357#else
358 panic("%s:%u: unsupported condition", __func__, __LINE__);
359#endif
360 break;
361 case TX_MKDIR_ACL:
362 aclstart = (caddr_t)(lracl + 1);
363 fuidstart = (caddr_t)aclstart +
364 ZIL_ACE_LENGTH(lracl->lr_acl_bytes);
365 zfsvfs->z_fuid_replay = zfs_replay_fuids(fuidstart,
366 (void *)&name, lracl->lr_fuidcnt, lracl->lr_domcnt,
367 lr->lr_uid, lr->lr_gid);
368 /*FALLTHROUGH*/
369 case TX_MKDIR_ACL_ATTR:
370 if (name == NULL) {
371 lrattr = (lr_attr_t *)(caddr_t)(lracl + 1);
372 xvatlen = ZIL_XVAT_SIZE(lrattr->lr_attr_masksize);
373 zfs_replay_xvattr(lrattr, &xva);
374 }
375 vsec.vsa_mask = VSA_ACE | VSA_ACE_ACLFLAGS;
376 vsec.vsa_aclentp = (caddr_t)(lracl + 1) + xvatlen;
377 vsec.vsa_aclcnt = lracl->lr_aclcnt;
378 vsec.vsa_aclentsz = lracl->lr_acl_bytes;
379 vsec.vsa_aclflags = lracl->lr_acl_flags;
380 if (zfsvfs->z_fuid_replay == NULL) {
381 fuidstart = (caddr_t)(lracl + 1) + xvatlen +
382 ZIL_ACE_LENGTH(lracl->lr_acl_bytes);
383 zfsvfs->z_fuid_replay =
384 zfs_replay_fuids(fuidstart,
385 (void *)&name, lracl->lr_fuidcnt, lracl->lr_domcnt,
386 lr->lr_uid, lr->lr_gid);
387 }
388#ifdef TODO
389 error = VOP_MKDIR(ZTOV(dzp), name, &xva.xva_vattr,
390 &vp, kcred, NULL, vflg, &vsec);
391#else
392 panic("%s:%u: unsupported condition", __func__, __LINE__);
393#endif
394 break;
395 default:
396 error = ENOTSUP;
397 }
398
399bail:
400 if (error == 0 && vp != NULL)
401 VN_RELE(vp);
402
403 VN_RELE(ZTOV(dzp));
404
|
405 zfs_fuid_info_free(zfsvfs->z_fuid_replay);
|
405 if (zfsvfs->z_fuid_replay)
406 zfs_fuid_info_free(zfsvfs->z_fuid_replay); |
407 zfsvfs->z_fuid_replay = NULL;
408
409 return (error);
410}
411
412static int
413zfs_replay_create(zfsvfs_t *zfsvfs, lr_create_t *lr, boolean_t byteswap)
414{
415 char *name = NULL; /* location determined later */
416 char *link; /* symlink content follows name */
417 znode_t *dzp;
418 vnode_t *vp = NULL;
419 xvattr_t xva;
420 int vflg = 0;
421 size_t lrsize = sizeof (lr_create_t);
422 lr_attr_t *lrattr;
423 void *start;
424 size_t xvatlen;
425 uint64_t txtype;
426 struct componentname cn;
427 int error;
428
|
| 429 txtype = (lr->lr_common.lrc_txtype & ~TX_CI); |
430 if (byteswap) {
431 byteswap_uint64_array(lr, sizeof (*lr));
|
430 txtype = (int)lr->lr_common.lrc_txtype;
|
432 if (txtype == TX_CREATE_ATTR || txtype == TX_MKDIR_ATTR)
433 zfs_replay_swap_attrs((lr_attr_t *)(lr + 1));
434 }
435
436
437 if ((error = zfs_zget(zfsvfs, lr->lr_doid, &dzp)) != 0)
438 return (error);
439
440 xva_init(&xva);
441 zfs_init_vattr(&xva.xva_vattr, AT_TYPE | AT_MODE | AT_UID | AT_GID,
442 lr->lr_mode, lr->lr_uid, lr->lr_gid, lr->lr_rdev, lr->lr_foid);
443
444 /*
445 * All forms of zfs create (create, mkdir, mkxattrdir, symlink)
446 * eventually end up in zfs_mknode(), which assigns the object's
447 * creation time and generation number. The generic VOP_CREATE()
448 * doesn't have either concept, so we smuggle the values inside
449 * the vattr's otherwise unused va_ctime and va_nblocks fields.
450 */
451 ZFS_TIME_DECODE(&xva.xva_vattr.va_ctime, lr->lr_crtime);
452 xva.xva_vattr.va_nblocks = lr->lr_gen;
453
454 error = dmu_object_info(zfsvfs->z_os, lr->lr_foid, NULL);
455 if (error != ENOENT)
456 goto out;
457
458 if (lr->lr_common.lrc_txtype & TX_CI)
459 vflg |= FIGNORECASE;
460
461 /*
462 * Symlinks don't have fuid info, and CIFS never creates
463 * symlinks.
464 *
465 * The _ATTR versions will grab the fuid info in their subcases.
466 */
467 if ((int)lr->lr_common.lrc_txtype != TX_SYMLINK &&
468 (int)lr->lr_common.lrc_txtype != TX_MKDIR_ATTR &&
469 (int)lr->lr_common.lrc_txtype != TX_CREATE_ATTR) {
470 start = (lr + 1);
471 zfsvfs->z_fuid_replay =
472 zfs_replay_fuid_domain(start, &start,
473 lr->lr_uid, lr->lr_gid);
474 }
475
476 cn.cn_cred = kcred;
477 cn.cn_thread = curthread;
478 cn.cn_flags = SAVENAME;
479
480 vn_lock(ZTOV(dzp), LK_EXCLUSIVE | LK_RETRY);
|
480 switch ((int)lr->lr_common.lrc_txtype) {
|
| 481 switch (txtype) { |
482 case TX_CREATE_ATTR:
483 lrattr = (lr_attr_t *)(caddr_t)(lr + 1);
484 xvatlen = ZIL_XVAT_SIZE(lrattr->lr_attr_masksize);
485 zfs_replay_xvattr((lr_attr_t *)((caddr_t)lr + lrsize), &xva);
486 start = (caddr_t)(lr + 1) + xvatlen;
487 zfsvfs->z_fuid_replay =
488 zfs_replay_fuid_domain(start, &start,
489 lr->lr_uid, lr->lr_gid);
490 name = (char *)start;
491
492 /*FALLTHROUGH*/
493 case TX_CREATE:
494 if (name == NULL)
495 name = (char *)start;
496
497 cn.cn_nameptr = name;
498 error = VOP_CREATE(ZTOV(dzp), &vp, &cn, &xva.xva_vattr /*,vflg*/);
499 break;
500 case TX_MKDIR_ATTR:
501 lrattr = (lr_attr_t *)(caddr_t)(lr + 1);
502 xvatlen = ZIL_XVAT_SIZE(lrattr->lr_attr_masksize);
503 zfs_replay_xvattr((lr_attr_t *)((caddr_t)lr + lrsize), &xva);
504 start = (caddr_t)(lr + 1) + xvatlen;
505 zfsvfs->z_fuid_replay =
506 zfs_replay_fuid_domain(start, &start,
507 lr->lr_uid, lr->lr_gid);
508 name = (char *)start;
509
510 /*FALLTHROUGH*/
511 case TX_MKDIR:
512 if (name == NULL)
513 name = (char *)(lr + 1);
514
515 cn.cn_nameptr = name;
516 error = VOP_MKDIR(ZTOV(dzp), &vp, &cn, &xva.xva_vattr /*,vflg*/);
517 break;
518 case TX_MKXATTR:
519 name = (char *)(lr + 1);
520 error = zfs_make_xattrdir(dzp, &xva.xva_vattr, &vp, kcred);
521 break;
522 case TX_SYMLINK:
523 name = (char *)(lr + 1);
524 link = name + strlen(name) + 1;
525 cn.cn_nameptr = name;
526 error = VOP_SYMLINK(ZTOV(dzp), &vp, &cn, &xva.xva_vattr, link /*,vflg*/);
527 break;
528 default:
529 error = ENOTSUP;
530 }
531 VOP_UNLOCK(ZTOV(dzp), 0);
532
533out:
534 if (error == 0 && vp != NULL) {
535 VOP_UNLOCK(vp, 0);
536 VN_RELE(vp);
537 }
538
539 VN_RELE(ZTOV(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
547static int
548zfs_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 struct componentname cn;
553 vnode_t *vp;
554 int error;
555 int vflg = 0;
556
557 if (byteswap)
558 byteswap_uint64_array(lr, sizeof (*lr));
559
560 if ((error = zfs_zget(zfsvfs, lr->lr_doid, &dzp)) != 0)
561 return (error);
562
563 if (lr->lr_common.lrc_txtype & TX_CI)
564 vflg |= FIGNORECASE;
565 cn.cn_nameptr = name;
566 cn.cn_namelen = strlen(name);
567 cn.cn_nameiop = DELETE;
568 cn.cn_flags = ISLASTCN | SAVENAME;
569 cn.cn_lkflags = LK_EXCLUSIVE | LK_RETRY;
570 cn.cn_cred = kcred;
571 cn.cn_thread = curthread;
572 vn_lock(ZTOV(dzp), LK_EXCLUSIVE | LK_RETRY);
573 error = VOP_LOOKUP(ZTOV(dzp), &vp, &cn);
574 if (error != 0) {
575 VOP_UNLOCK(ZTOV(dzp), 0);
576 goto fail;
577 }
578
579 switch ((int)lr->lr_common.lrc_txtype) {
580 case TX_REMOVE:
581 error = VOP_REMOVE(ZTOV(dzp), vp, &cn /*,vflg*/);
582 break;
583 case TX_RMDIR:
584 error = VOP_RMDIR(ZTOV(dzp), vp, &cn /*,vflg*/);
585 break;
586 default:
587 error = ENOTSUP;
588 }
589 vput(vp);
590 VOP_UNLOCK(ZTOV(dzp), 0);
591fail:
592 VN_RELE(ZTOV(dzp));
593
594 return (error);
595}
596
597static int
598zfs_replay_link(zfsvfs_t *zfsvfs, lr_link_t *lr, boolean_t byteswap)
599{
600 char *name = (char *)(lr + 1); /* name follows lr_link_t */
601 znode_t *dzp, *zp;
602 struct componentname cn;
603 int error;
604 int vflg = 0;
605
606 if (byteswap)
607 byteswap_uint64_array(lr, sizeof (*lr));
608
609 if ((error = zfs_zget(zfsvfs, lr->lr_doid, &dzp)) != 0)
610 return (error);
611
612 if ((error = zfs_zget(zfsvfs, lr->lr_link_obj, &zp)) != 0) {
613 VN_RELE(ZTOV(dzp));
614 return (error);
615 }
616
617 if (lr->lr_common.lrc_txtype & TX_CI)
618 vflg |= FIGNORECASE;
619 cn.cn_nameptr = name;
620 cn.cn_cred = kcred;
621 cn.cn_thread = curthread;
622 cn.cn_flags = SAVENAME;
623
624 vn_lock(ZTOV(dzp), LK_EXCLUSIVE | LK_RETRY);
625 vn_lock(ZTOV(zp), LK_EXCLUSIVE | LK_RETRY);
626 error = VOP_LINK(ZTOV(dzp), ZTOV(zp), &cn /*,vflg*/);
627 VOP_UNLOCK(ZTOV(zp), 0);
628 VOP_UNLOCK(ZTOV(dzp), 0);
629
630 VN_RELE(ZTOV(zp));
631 VN_RELE(ZTOV(dzp));
632
633 return (error);
634}
635
636static int
637zfs_replay_rename(zfsvfs_t *zfsvfs, lr_rename_t *lr, boolean_t byteswap)
638{
639 char *sname = (char *)(lr + 1); /* sname and tname follow lr_rename_t */
640 char *tname = sname + strlen(sname) + 1;
641 znode_t *sdzp, *tdzp;
642 struct componentname scn, tcn;
643 vnode_t *svp, *tvp;
644 kthread_t *td = curthread;
645 int error;
646 int vflg = 0;
647
648 if (byteswap)
649 byteswap_uint64_array(lr, sizeof (*lr));
650
651 if ((error = zfs_zget(zfsvfs, lr->lr_sdoid, &sdzp)) != 0)
652 return (error);
653
654 if ((error = zfs_zget(zfsvfs, lr->lr_tdoid, &tdzp)) != 0) {
655 VN_RELE(ZTOV(sdzp));
656 return (error);
657 }
658
659 if (lr->lr_common.lrc_txtype & TX_CI)
660 vflg |= FIGNORECASE;
661 svp = tvp = NULL;
662
663 scn.cn_nameptr = sname;
664 scn.cn_namelen = strlen(sname);
665 scn.cn_nameiop = DELETE;
666 scn.cn_flags = ISLASTCN | SAVENAME;
667 scn.cn_lkflags = LK_EXCLUSIVE | LK_RETRY;
668 scn.cn_cred = kcred;
669 scn.cn_thread = td;
670 vn_lock(ZTOV(sdzp), LK_EXCLUSIVE | LK_RETRY);
671 error = VOP_LOOKUP(ZTOV(sdzp), &svp, &scn);
672 VOP_UNLOCK(ZTOV(sdzp), 0);
673 if (error != 0)
674 goto fail;
675 VOP_UNLOCK(svp, 0);
676
677 tcn.cn_nameptr = tname;
678 tcn.cn_namelen = strlen(tname);
679 tcn.cn_nameiop = RENAME;
680 tcn.cn_flags = ISLASTCN | SAVENAME;
681 tcn.cn_lkflags = LK_EXCLUSIVE | LK_RETRY;
682 tcn.cn_cred = kcred;
683 tcn.cn_thread = td;
684 vn_lock(ZTOV(tdzp), LK_EXCLUSIVE | LK_RETRY);
685 error = VOP_LOOKUP(ZTOV(tdzp), &tvp, &tcn);
686 if (error == EJUSTRETURN)
687 tvp = NULL;
688 else if (error != 0) {
689 VOP_UNLOCK(ZTOV(tdzp), 0);
690 goto fail;
691 }
692
693 error = VOP_RENAME(ZTOV(sdzp), svp, &scn, ZTOV(tdzp), tvp, &tcn /*,vflg*/);
694 return (error);
695fail:
696 if (svp != NULL)
697 vrele(svp);
698 if (tvp != NULL)
699 vrele(tvp);
700 VN_RELE(ZTOV(tdzp));
701 VN_RELE(ZTOV(sdzp));
702
703 return (error);
704}
705
706static int
707zfs_replay_write(zfsvfs_t *zfsvfs, lr_write_t *lr, boolean_t byteswap)
708{
709 char *data = (char *)(lr + 1); /* data follows lr_write_t */
710 znode_t *zp;
711 int error;
712 ssize_t resid;
|
| 713 uint64_t orig_eof, eod; |
714
715 if (byteswap)
716 byteswap_uint64_array(lr, sizeof (*lr));
717
718 if ((error = zfs_zget(zfsvfs, lr->lr_foid, &zp)) != 0) {
719 /*
720 * As we can log writes out of order, it's possible the
721 * file has been removed. In this case just drop the write
722 * and return success.
723 */
724 if (error == ENOENT)
725 error = 0;
726 return (error);
727 }
|
728 orig_eof = zp->z_phys->zp_size;
729 eod = lr->lr_offset + lr->lr_length; /* end of data for this write */ |
730
|
731 /* If it's a dmu_sync() block get the data and write the whole block */
732 if (lr->lr_common.lrc_reclen == sizeof (lr_write_t))
733 zil_get_replay_data(zfsvfs->z_log, lr);
734 |
735 error = vn_rdwr(UIO_WRITE, ZTOV(zp), data, lr->lr_length,
736 lr->lr_offset, UIO_SYSSPACE, 0, RLIM64_INFINITY, kcred, &resid);
737
|
738 /*
739 * This may be a write from a dmu_sync() for a whole block,
740 * and may extend beyond the current end of the file.
741 * We can't just replay what was written for this TX_WRITE as
742 * a future TX_WRITE2 may extend the eof and the data for that
743 * write needs to be there. So we write the whole block and
744 * reduce the eof.
745 */
746 if (orig_eof < zp->z_phys->zp_size) /* file length grew ? */
747 zp->z_phys->zp_size = eod;
748 |
749 VN_RELE(ZTOV(zp));
750
751 return (error);
752}
753
|
754/*
755 * TX_WRITE2 are only generated when dmu_sync() returns EALREADY
756 * meaning the pool block is already being synced. So now that we always write
757 * out full blocks, all we have to do is expand the eof if
758 * the file is grown.
759 */ |
760static int
|
761zfs_replay_write2(zfsvfs_t *zfsvfs, lr_write_t *lr, boolean_t byteswap)
762{
763 znode_t *zp;
764 int error;
765 uint64_t end;
766
767 if (byteswap)
768 byteswap_uint64_array(lr, sizeof (*lr));
769
770 if ((error = zfs_zget(zfsvfs, lr->lr_foid, &zp)) != 0) {
771 /*
772 * As we can log writes out of order, it's possible the
773 * file has been removed. In this case just drop the write
774 * and return success.
775 */
776 if (error == ENOENT)
777 error = 0;
778 return (error);
779 }
780
781 end = lr->lr_offset + lr->lr_length;
782 if (end > zp->z_phys->zp_size) {
783 ASSERT3U(end - zp->z_phys->zp_size, <, zp->z_blksz);
784 zp->z_phys->zp_size = end;
785 }
786
787 VN_RELE(ZTOV(zp));
788
789 return (error);
790}
791
792static int |
793zfs_replay_truncate(zfsvfs_t *zfsvfs, lr_truncate_t *lr, boolean_t byteswap)
794{
795
796 ZFS_LOG(0, "Unexpected code path, report to pjd@FreeBSD.org");
797 return (EOPNOTSUPP);
798}
799
800static int
801zfs_replay_setattr(zfsvfs_t *zfsvfs, lr_setattr_t *lr, boolean_t byteswap)
802{
803 znode_t *zp;
804 xvattr_t xva;
805 vattr_t *vap = &xva.xva_vattr;
806 vnode_t *vp;
807 int error;
808 void *start;
809
810 xva_init(&xva);
811 if (byteswap) {
812 byteswap_uint64_array(lr, sizeof (*lr));
813
814 if ((lr->lr_mask & AT_XVATTR) &&
815 zfsvfs->z_version >= ZPL_VERSION_INITIAL)
816 zfs_replay_swap_attrs((lr_attr_t *)(lr + 1));
817 }
818
819 if ((error = zfs_zget(zfsvfs, lr->lr_foid, &zp)) != 0) {
820 /*
821 * As we can log setattrs out of order, it's possible the
822 * file has been removed. In this case just drop the setattr
823 * and return success.
824 */
825 if (error == ENOENT)
826 error = 0;
827 return (error);
828 }
829
830 zfs_init_vattr(vap, lr->lr_mask, lr->lr_mode,
831 lr->lr_uid, lr->lr_gid, 0, lr->lr_foid);
832
833 vap->va_size = lr->lr_size;
834 ZFS_TIME_DECODE(&vap->va_atime, lr->lr_atime);
835 ZFS_TIME_DECODE(&vap->va_mtime, lr->lr_mtime);
836
837 /*
838 * Fill in xvattr_t portions if necessary.
839 */
840
841 start = (lr_setattr_t *)(lr + 1);
842 if (vap->va_mask & AT_XVATTR) {
843 zfs_replay_xvattr((lr_attr_t *)start, &xva);
844 start = (caddr_t)start +
845 ZIL_XVAT_SIZE(((lr_attr_t *)start)->lr_attr_masksize);
846 } else
847 xva.xva_vattr.va_mask &= ~AT_XVATTR;
848
849 zfsvfs->z_fuid_replay = zfs_replay_fuid_domain(start, &start,
850 lr->lr_uid, lr->lr_gid);
851
852 vp = ZTOV(zp);
853 vn_lock(vp, LK_EXCLUSIVE | LK_RETRY);
854 error = VOP_SETATTR(vp, vap, kcred);
855 VOP_UNLOCK(vp, 0);
856
857 zfs_fuid_info_free(zfsvfs->z_fuid_replay);
858 zfsvfs->z_fuid_replay = NULL;
859 VN_RELE(vp);
860
861 return (error);
862}
863
864static int
865zfs_replay_acl_v0(zfsvfs_t *zfsvfs, lr_acl_v0_t *lr, boolean_t byteswap)
866{
867 ace_t *ace = (ace_t *)(lr + 1); /* ace array follows lr_acl_t */
868 vsecattr_t vsa;
869 znode_t *zp;
870 int error;
871
872 if (byteswap) {
873 byteswap_uint64_array(lr, sizeof (*lr));
874 zfs_oldace_byteswap(ace, lr->lr_aclcnt);
875 }
876
877 if ((error = zfs_zget(zfsvfs, lr->lr_foid, &zp)) != 0) {
878 /*
879 * As we can log acls out of order, it's possible the
880 * file has been removed. In this case just drop the acl
881 * and return success.
882 */
883 if (error == ENOENT)
884 error = 0;
885 return (error);
886 }
887
888 bzero(&vsa, sizeof (vsa));
889 vsa.vsa_mask = VSA_ACE | VSA_ACECNT;
890 vsa.vsa_aclcnt = lr->lr_aclcnt;
891 vsa.vsa_aclentsz = sizeof (ace_t) * vsa.vsa_aclcnt;
892 vsa.vsa_aclflags = 0;
893 vsa.vsa_aclentp = ace;
894
895#ifdef TODO
896 error = VOP_SETSECATTR(ZTOV(zp), &vsa, 0, kcred, NULL);
897#else
898 panic("%s:%u: unsupported condition", __func__, __LINE__);
899#endif
900
901 VN_RELE(ZTOV(zp));
902
903 return (error);
904}
905
906/*
907 * Replaying ACLs is complicated by FUID support.
908 * The log record may contain some optional data
909 * to be used for replaying FUID's. These pieces
910 * are the actual FUIDs that were created initially.
911 * The FUID table index may no longer be valid and
912 * during zfs_create() a new index may be assigned.
913 * Because of this the log will contain the original
914 * doman+rid in order to create a new FUID.
915 *
916 * The individual ACEs may contain an ephemeral uid/gid which is no
917 * longer valid and will need to be replaced with an actual FUID.
918 *
919 */
920static int
921zfs_replay_acl(zfsvfs_t *zfsvfs, lr_acl_t *lr, boolean_t byteswap)
922{
923 ace_t *ace = (ace_t *)(lr + 1);
924 vsecattr_t vsa;
925 znode_t *zp;
926 int error;
927
928 if (byteswap) {
929 byteswap_uint64_array(lr, sizeof (*lr));
930 zfs_ace_byteswap(ace, lr->lr_acl_bytes, B_FALSE);
931 if (lr->lr_fuidcnt) {
932 byteswap_uint64_array((caddr_t)ace +
933 ZIL_ACE_LENGTH(lr->lr_acl_bytes),
934 lr->lr_fuidcnt * sizeof (uint64_t));
935 }
936 }
937
938 if ((error = zfs_zget(zfsvfs, lr->lr_foid, &zp)) != 0) {
939 /*
940 * As we can log acls out of order, it's possible the
941 * file has been removed. In this case just drop the acl
942 * and return success.
943 */
944 if (error == ENOENT)
945 error = 0;
946 return (error);
947 }
948
949#ifdef TODO
950 bzero(&vsa, sizeof (vsa));
951 vsa.vsa_mask = VSA_ACE | VSA_ACECNT | VSA_ACE_ACLFLAGS;
952 vsa.vsa_aclcnt = lr->lr_aclcnt;
953 vsa.vsa_aclentp = ace;
954 vsa.vsa_aclentsz = lr->lr_acl_bytes;
955 vsa.vsa_aclflags = lr->lr_acl_flags;
956
957 if (lr->lr_fuidcnt) {
958 void *fuidstart = (caddr_t)ace +
959 ZIL_ACE_LENGTH(lr->lr_acl_bytes);
960
961 zfsvfs->z_fuid_replay =
962 zfs_replay_fuids(fuidstart, &fuidstart,
963 lr->lr_fuidcnt, lr->lr_domcnt, 0, 0);
964 }
965
966 error = VOP_SETSECATTR(ZTOV(zp), &vsa, 0, kcred, NULL);
967
968 if (zfsvfs->z_fuid_replay)
969 zfs_fuid_info_free(zfsvfs->z_fuid_replay);
970#else
971 error = EOPNOTSUPP;
972#endif
973
974 zfsvfs->z_fuid_replay = NULL;
975 VN_RELE(ZTOV(zp));
976
977 return (error);
978}
979
980/*
981 * Callback vectors for replaying records
982 */
983zil_replay_func_t *zfs_replay_vector[TX_MAX_TYPE] = {
984 zfs_replay_error, /* 0 no such transaction type */
985 zfs_replay_create, /* TX_CREATE */
986 zfs_replay_create, /* TX_MKDIR */
987 zfs_replay_create, /* TX_MKXATTR */
988 zfs_replay_create, /* TX_SYMLINK */
989 zfs_replay_remove, /* TX_REMOVE */
990 zfs_replay_remove, /* TX_RMDIR */
991 zfs_replay_link, /* TX_LINK */
992 zfs_replay_rename, /* TX_RENAME */
993 zfs_replay_write, /* TX_WRITE */
994 zfs_replay_truncate, /* TX_TRUNCATE */
995 zfs_replay_setattr, /* TX_SETATTR */
996 zfs_replay_acl_v0, /* TX_ACL_V0 */
997 zfs_replay_acl, /* TX_ACL */
998 zfs_replay_create_acl, /* TX_CREATE_ACL */
999 zfs_replay_create, /* TX_CREATE_ATTR */
1000 zfs_replay_create_acl, /* TX_CREATE_ACL_ATTR */
1001 zfs_replay_create_acl, /* TX_MKDIR_ACL */
1002 zfs_replay_create, /* TX_MKDIR_ATTR */
1003 zfs_replay_create_acl, /* TX_MKDIR_ACL_ATTR */
|
| 1004 zfs_replay_write2, /* TX_WRITE2 */ |
1005};
|