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 */
24
25 #include <sys/types.h>
26 #include <sys/param.h>
27 #include <sys/systm.h>
28 #include <sys/sysmacros.h>
29 #include <sys/cmn_err.h>
30 #include <sys/kmem.h>
31 #include <sys/thread.h>
32 #include <sys/file.h>
33 #include <sys/vfs.h>
34 #include <sys/zfs_znode.h>
35 #include <sys/zfs_dir.h>
36 #include <sys/zil.h>
37 #include <sys/zil_impl.h>
38 #include <sys/byteorder.h>
39 #include <sys/policy.h>
40 #include <sys/stat.h>
41 #include <sys/mode.h>
42 #include <sys/acl.h>
43 #include <sys/dmu.h>
44 #include <sys/spa.h>
45 #include <sys/zfs_fuid.h>
46 #include <sys/ddi.h>
47 #include <sys/dsl_dataset.h>
48 #include <sys/zfs_events.h>
49
50 /*
51 * These zfs_log_* functions must be called within a dmu tx, in one
52 * of 2 contexts depending on zilog->z_replay:
53 *
54 * Non replay mode
55 * ---------------
56 * We need to record the transaction so that if it is committed to
57 * the Intent Log then it can be replayed. An intent log transaction
58 * structure (itx_t) is allocated and all the information necessary to
59 * possibly replay the transaction is saved in it. The itx is then assigned
60 * a sequence number and inserted in the in-memory list anchored in the zilog.
61 *
62 * Replay mode
63 * -----------
64 * We need to mark the intent log record as replayed in the log header.
65 * This is done in the same transaction as the replay so that they
66 * commit atomically.
67 */
68
69 int
zfs_log_create_txtype(zil_create_t type,vsecattr_t * vsecp,vattr_t * vap)70 zfs_log_create_txtype(zil_create_t type, vsecattr_t *vsecp, vattr_t *vap)
71 {
72 int isxvattr = (vap->va_mask & AT_XVATTR);
73 switch (type) {
74 case Z_FILE:
75 if (vsecp == NULL && !isxvattr)
76 return (TX_CREATE);
77 if (vsecp && isxvattr)
78 return (TX_CREATE_ACL_ATTR);
79 if (vsecp)
80 return (TX_CREATE_ACL);
81 else
82 return (TX_CREATE_ATTR);
83 /*NOTREACHED*/
84 case Z_DIR:
85 if (vsecp == NULL && !isxvattr)
86 return (TX_MKDIR);
87 if (vsecp && isxvattr)
88 return (TX_MKDIR_ACL_ATTR);
89 if (vsecp)
90 return (TX_MKDIR_ACL);
91 else
92 return (TX_MKDIR_ATTR);
93 case Z_XATTRDIR:
94 return (TX_MKXATTR);
95 }
96 ASSERT(0);
97 return (TX_MAX_TYPE);
98 }
99
100 /*
101 * build up the log data necessary for logging xvattr_t
102 * First lr_attr_t is initialized. following the lr_attr_t
103 * is the mapsize and attribute bitmap copied from the xvattr_t.
104 * Following the bitmap and bitmapsize two 64 bit words are reserved
105 * for the create time which may be set. Following the create time
106 * records a single 64 bit integer which has the bits to set on
107 * replay for the xvattr.
108 */
109 static void
zfs_log_xvattr(lr_attr_t * lrattr,xvattr_t * xvap)110 zfs_log_xvattr(lr_attr_t *lrattr, xvattr_t *xvap)
111 {
112 uint32_t *bitmap;
113 uint64_t *attrs;
114 uint64_t *crtime;
115 xoptattr_t *xoap;
116 void *scanstamp;
117 int i;
118
119 xoap = xva_getxoptattr(xvap);
120 ASSERT(xoap);
121
122 lrattr->lr_attr_masksize = xvap->xva_mapsize;
123 bitmap = &lrattr->lr_attr_bitmap;
124 for (i = 0; i != xvap->xva_mapsize; i++, bitmap++) {
125 *bitmap = xvap->xva_reqattrmap[i];
126 }
127
128 /* Now pack the attributes up in a single uint64_t */
129 attrs = (uint64_t *)bitmap;
130 crtime = attrs + 1;
131 scanstamp = (caddr_t)(crtime + 2);
132 *attrs = 0;
133 if (XVA_ISSET_REQ(xvap, XAT_READONLY))
134 *attrs |= (xoap->xoa_readonly == 0) ? 0 :
135 XAT0_READONLY;
136 if (XVA_ISSET_REQ(xvap, XAT_HIDDEN))
137 *attrs |= (xoap->xoa_hidden == 0) ? 0 :
138 XAT0_HIDDEN;
139 if (XVA_ISSET_REQ(xvap, XAT_SYSTEM))
140 *attrs |= (xoap->xoa_system == 0) ? 0 :
141 XAT0_SYSTEM;
142 if (XVA_ISSET_REQ(xvap, XAT_ARCHIVE))
143 *attrs |= (xoap->xoa_archive == 0) ? 0 :
144 XAT0_ARCHIVE;
145 if (XVA_ISSET_REQ(xvap, XAT_IMMUTABLE))
146 *attrs |= (xoap->xoa_immutable == 0) ? 0 :
147 XAT0_IMMUTABLE;
148 if (XVA_ISSET_REQ(xvap, XAT_NOUNLINK))
149 *attrs |= (xoap->xoa_nounlink == 0) ? 0 :
150 XAT0_NOUNLINK;
151 if (XVA_ISSET_REQ(xvap, XAT_APPENDONLY))
152 *attrs |= (xoap->xoa_appendonly == 0) ? 0 :
153 XAT0_APPENDONLY;
154 if (XVA_ISSET_REQ(xvap, XAT_OPAQUE))
155 *attrs |= (xoap->xoa_opaque == 0) ? 0 :
156 XAT0_APPENDONLY;
157 if (XVA_ISSET_REQ(xvap, XAT_NODUMP))
158 *attrs |= (xoap->xoa_nodump == 0) ? 0 :
159 XAT0_NODUMP;
160 if (XVA_ISSET_REQ(xvap, XAT_AV_QUARANTINED))
161 *attrs |= (xoap->xoa_av_quarantined == 0) ? 0 :
162 XAT0_AV_QUARANTINED;
163 if (XVA_ISSET_REQ(xvap, XAT_AV_MODIFIED))
164 *attrs |= (xoap->xoa_av_modified == 0) ? 0 :
165 XAT0_AV_MODIFIED;
166 if (XVA_ISSET_REQ(xvap, XAT_CREATETIME))
167 ZFS_TIME_ENCODE(&xoap->xoa_createtime, crtime);
168 if (XVA_ISSET_REQ(xvap, XAT_AV_SCANSTAMP))
169 bcopy(xoap->xoa_av_scanstamp, scanstamp, AV_SCANSTAMP_SZ);
170 if (XVA_ISSET_REQ(xvap, XAT_REPARSE))
171 *attrs |= (xoap->xoa_reparse == 0) ? 0 :
172 XAT0_REPARSE;
173 if (XVA_ISSET_REQ(xvap, XAT_OFFLINE))
174 *attrs |= (xoap->xoa_offline == 0) ? 0 :
175 XAT0_OFFLINE;
176 if (XVA_ISSET_REQ(xvap, XAT_SPARSE))
177 *attrs |= (xoap->xoa_sparse == 0) ? 0 :
178 XAT0_SPARSE;
179 }
180
181 static void *
zfs_log_fuid_ids(zfs_fuid_info_t * fuidp,void * start)182 zfs_log_fuid_ids(zfs_fuid_info_t *fuidp, void *start)
183 {
184 zfs_fuid_t *zfuid;
185 uint64_t *fuidloc = start;
186
187 /* First copy in the ACE FUIDs */
188 for (zfuid = list_head(&fuidp->z_fuids); zfuid;
189 zfuid = list_next(&fuidp->z_fuids, zfuid)) {
190 *fuidloc++ = zfuid->z_logfuid;
191 }
192 return (fuidloc);
193 }
194
195
196 static void *
zfs_log_fuid_domains(zfs_fuid_info_t * fuidp,void * start)197 zfs_log_fuid_domains(zfs_fuid_info_t *fuidp, void *start)
198 {
199 zfs_fuid_domain_t *zdomain;
200
201 /* now copy in the domain info, if any */
202 if (fuidp->z_domain_str_sz != 0) {
203 for (zdomain = list_head(&fuidp->z_domains); zdomain;
204 zdomain = list_next(&fuidp->z_domains, zdomain)) {
205 bcopy((void *)zdomain->z_domain, start,
206 strlen(zdomain->z_domain) + 1);
207 start = (caddr_t)start +
208 strlen(zdomain->z_domain) + 1;
209 }
210 }
211 return (start);
212 }
213
214 /*
215 * Handles TX_CREATE, TX_CREATE_ATTR, TX_MKDIR, TX_MKDIR_ATTR and
216 * TK_MKXATTR transactions.
217 *
218 * TX_CREATE and TX_MKDIR are standard creates, but they may have FUID
219 * domain information appended prior to the name. In this case the
220 * uid/gid in the log record will be a log centric FUID.
221 *
222 * TX_CREATE_ACL_ATTR and TX_MKDIR_ACL_ATTR handle special creates that
223 * may contain attributes, ACL and optional fuid information.
224 *
225 * TX_CREATE_ACL and TX_MKDIR_ACL handle special creates that specify
226 * and ACL and normal users/groups in the ACEs.
227 *
228 * There may be an optional xvattr attribute information similar
229 * to zfs_log_setattr.
230 *
231 * Also, after the file name "domain" strings may be appended.
232 */
233 void
zfs_log_create(zilog_t * zilog,dmu_tx_t * tx,uint64_t txtype,znode_t * dzp,znode_t * zp,char * name,vsecattr_t * vsecp,zfs_fuid_info_t * fuidp,vattr_t * vap)234 zfs_log_create(zilog_t *zilog, dmu_tx_t *tx, uint64_t txtype,
235 znode_t *dzp, znode_t *zp, char *name, vsecattr_t *vsecp,
236 zfs_fuid_info_t *fuidp, vattr_t *vap)
237 {
238 itx_t *itx;
239 lr_create_t *lr;
240 lr_acl_create_t *lracl;
241 size_t aclsize = (vsecp != NULL) ? vsecp->vsa_aclentsz : 0;
242 size_t xvatsize = 0;
243 size_t txsize;
244 xvattr_t *xvap = (xvattr_t *)vap;
245 void *end;
246 size_t lrsize;
247 size_t namesize = strlen(name) + 1;
248 size_t fuidsz = 0;
249
250 if (zil_replaying(zilog, tx))
251 return;
252
253 /*
254 * If we have FUIDs present then add in space for
255 * domains and ACE fuid's if any.
256 */
257 if (fuidp) {
258 fuidsz += fuidp->z_domain_str_sz;
259 fuidsz += fuidp->z_fuid_cnt * sizeof (uint64_t);
260 }
261
262 if (vap->va_mask & AT_XVATTR)
263 xvatsize = ZIL_XVAT_SIZE(xvap->xva_mapsize);
264
265 if ((int)txtype == TX_CREATE_ATTR || (int)txtype == TX_MKDIR_ATTR ||
266 (int)txtype == TX_CREATE || (int)txtype == TX_MKDIR ||
267 (int)txtype == TX_MKXATTR) {
268 txsize = sizeof (*lr) + namesize + fuidsz + xvatsize;
269 lrsize = sizeof (*lr);
270 } else {
271 txsize =
272 sizeof (lr_acl_create_t) + namesize + fuidsz +
273 ZIL_ACE_LENGTH(aclsize) + xvatsize;
274 lrsize = sizeof (lr_acl_create_t);
275 }
276
277 itx = zil_itx_create(txtype, txsize);
278
279 lr = (lr_create_t *)&itx->itx_lr;
280 lr->lr_doid = dzp->z_id;
281 lr->lr_foid = zp->z_id;
282 lr->lr_mode = zp->z_mode;
283 if (!IS_EPHEMERAL(zp->z_uid)) {
284 lr->lr_uid = (uint64_t)zp->z_uid;
285 } else {
286 lr->lr_uid = fuidp->z_fuid_owner;
287 }
288 if (!IS_EPHEMERAL(zp->z_gid)) {
289 lr->lr_gid = (uint64_t)zp->z_gid;
290 } else {
291 lr->lr_gid = fuidp->z_fuid_group;
292 }
293 (void) sa_lookup(zp->z_sa_hdl, SA_ZPL_GEN(zp->z_zfsvfs), &lr->lr_gen,
294 sizeof (uint64_t));
295 (void) sa_lookup(zp->z_sa_hdl, SA_ZPL_CRTIME(zp->z_zfsvfs),
296 lr->lr_crtime, sizeof (uint64_t) * 2);
297
298 if (sa_lookup(zp->z_sa_hdl, SA_ZPL_RDEV(zp->z_zfsvfs), &lr->lr_rdev,
299 sizeof (lr->lr_rdev)) != 0)
300 lr->lr_rdev = 0;
301
302 /*
303 * Fill in xvattr info if any
304 */
305 if (vap->va_mask & AT_XVATTR) {
306 zfs_log_xvattr((lr_attr_t *)((caddr_t)lr + lrsize), xvap);
307 end = (caddr_t)lr + lrsize + xvatsize;
308 } else {
309 end = (caddr_t)lr + lrsize;
310 }
311
312 /* Now fill in any ACL info */
313
314 if (vsecp) {
315 lracl = (lr_acl_create_t *)&itx->itx_lr;
316 lracl->lr_aclcnt = vsecp->vsa_aclcnt;
317 lracl->lr_acl_bytes = aclsize;
318 lracl->lr_domcnt = fuidp ? fuidp->z_domain_cnt : 0;
319 lracl->lr_fuidcnt = fuidp ? fuidp->z_fuid_cnt : 0;
320 if (vsecp->vsa_aclflags & VSA_ACE_ACLFLAGS)
321 lracl->lr_acl_flags = (uint64_t)vsecp->vsa_aclflags;
322 else
323 lracl->lr_acl_flags = 0;
324
325 bcopy(vsecp->vsa_aclentp, end, aclsize);
326 end = (caddr_t)end + ZIL_ACE_LENGTH(aclsize);
327 }
328
329 /* drop in FUID info */
330 if (fuidp) {
331 end = zfs_log_fuid_ids(fuidp, end);
332 end = zfs_log_fuid_domains(fuidp, end);
333 }
334 /*
335 * Now place file name in log record
336 */
337 bcopy(name, end, namesize);
338
339 zil_itx_assign(zilog, itx, tx);
340
341 rw_enter(&rz_zev_rwlock, RW_READER);
342 if (rz_zev_callbacks && rz_zev_callbacks->rz_zev_znode_create)
343 rz_zev_callbacks->rz_zev_znode_create(dzp, zp, tx, name,
344 txtype);
345 rw_exit(&rz_zev_rwlock);
346 }
347
348 /*
349 * Handles both TX_REMOVE and TX_RMDIR transactions.
350 */
351 void
zfs_log_remove(zilog_t * zilog,dmu_tx_t * tx,uint64_t txtype,znode_t * dzp,char * name,uint64_t foid)352 zfs_log_remove(zilog_t *zilog, dmu_tx_t *tx, uint64_t txtype,
353 znode_t *dzp, char *name, uint64_t foid)
354 {
355 itx_t *itx;
356 lr_remove_t *lr;
357 size_t namesize = strlen(name) + 1;
358
359 if (zil_replaying(zilog, tx))
360 return;
361
362 itx = zil_itx_create(txtype, sizeof (*lr) + namesize);
363 lr = (lr_remove_t *)&itx->itx_lr;
364 lr->lr_doid = dzp->z_id;
365 bcopy(name, (char *)(lr + 1), namesize);
366
367 itx->itx_oid = foid;
368
369 zil_itx_assign(zilog, itx, tx);
370 }
371
372 /*
373 * Handles TX_LINK transactions.
374 */
375 void
zfs_log_link(zilog_t * zilog,dmu_tx_t * tx,uint64_t txtype,znode_t * dzp,znode_t * zp,char * name)376 zfs_log_link(zilog_t *zilog, dmu_tx_t *tx, uint64_t txtype,
377 znode_t *dzp, znode_t *zp, char *name)
378 {
379 itx_t *itx;
380 lr_link_t *lr;
381 size_t namesize = strlen(name) + 1;
382
383 if (zil_replaying(zilog, tx))
384 return;
385
386 itx = zil_itx_create(txtype, sizeof (*lr) + namesize);
387 lr = (lr_link_t *)&itx->itx_lr;
388 lr->lr_doid = dzp->z_id;
389 lr->lr_link_obj = zp->z_id;
390 bcopy(name, (char *)(lr + 1), namesize);
391
392 zil_itx_assign(zilog, itx, tx);
393
394 rw_enter(&rz_zev_rwlock, RW_READER);
395 if (rz_zev_callbacks && rz_zev_callbacks->rz_zev_znode_link)
396 rz_zev_callbacks->rz_zev_znode_link(dzp, zp, tx, name);
397 rw_exit(&rz_zev_rwlock);
398 }
399
400 /*
401 * Handles TX_SYMLINK transactions.
402 */
403 void
zfs_log_symlink(zilog_t * zilog,dmu_tx_t * tx,uint64_t txtype,znode_t * dzp,znode_t * zp,char * name,char * link)404 zfs_log_symlink(zilog_t *zilog, dmu_tx_t *tx, uint64_t txtype,
405 znode_t *dzp, znode_t *zp, char *name, char *link)
406 {
407 itx_t *itx;
408 lr_create_t *lr;
409 size_t namesize = strlen(name) + 1;
410 size_t linksize = strlen(link) + 1;
411
412 if (zil_replaying(zilog, tx))
413 return;
414
415 itx = zil_itx_create(txtype, sizeof (*lr) + namesize + linksize);
416 lr = (lr_create_t *)&itx->itx_lr;
417 lr->lr_doid = dzp->z_id;
418 lr->lr_foid = zp->z_id;
419 lr->lr_uid = zp->z_uid;
420 lr->lr_gid = zp->z_gid;
421 lr->lr_mode = zp->z_mode;
422 (void) sa_lookup(zp->z_sa_hdl, SA_ZPL_GEN(zp->z_zfsvfs), &lr->lr_gen,
423 sizeof (uint64_t));
424 (void) sa_lookup(zp->z_sa_hdl, SA_ZPL_CRTIME(zp->z_zfsvfs),
425 lr->lr_crtime, sizeof (uint64_t) * 2);
426 bcopy(name, (char *)(lr + 1), namesize);
427 bcopy(link, (char *)(lr + 1) + namesize, linksize);
428
429 zil_itx_assign(zilog, itx, tx);
430
431 rw_enter(&rz_zev_rwlock, RW_READER);
432 if (rz_zev_callbacks && rz_zev_callbacks->rz_zev_znode_symlink)
433 rz_zev_callbacks->rz_zev_znode_symlink(dzp, zp, tx, name, link);
434 rw_exit(&rz_zev_rwlock);
435 }
436
437 /*
438 * Handles TX_RENAME transactions.
439 */
440 void
zfs_log_rename(zilog_t * zilog,dmu_tx_t * tx,uint64_t txtype,znode_t * sdzp,char * sname,znode_t * tdzp,char * dname,znode_t * szp,znode_t * tzp)441 zfs_log_rename(zilog_t *zilog, dmu_tx_t *tx, uint64_t txtype,
442 znode_t *sdzp, char *sname, znode_t *tdzp, char *dname,
443 znode_t *szp, znode_t *tzp)
444 {
445 itx_t *itx;
446 lr_rename_t *lr;
447 size_t snamesize = strlen(sname) + 1;
448 size_t dnamesize = strlen(dname) + 1;
449
450 if (zil_replaying(zilog, tx))
451 return;
452
453 itx = zil_itx_create(txtype, sizeof (*lr) + snamesize + dnamesize);
454 lr = (lr_rename_t *)&itx->itx_lr;
455 lr->lr_sdoid = sdzp->z_id;
456 lr->lr_tdoid = tdzp->z_id;
457 bcopy(sname, (char *)(lr + 1), snamesize);
458 bcopy(dname, (char *)(lr + 1) + snamesize, dnamesize);
459 itx->itx_oid = szp->z_id;
460
461 zil_itx_assign(zilog, itx, tx);
462
463 rw_enter(&rz_zev_rwlock, RW_READER);
464 if (rz_zev_callbacks && rz_zev_callbacks->rz_zev_znode_rename)
465 rz_zev_callbacks->rz_zev_znode_rename(sdzp,
466 sname, tdzp, dname, szp, tzp, tx);
467 rw_exit(&rz_zev_rwlock);
468 }
469
470 /*
471 * Handles TX_WRITE transactions.
472 */
473 ssize_t zfs_immediate_write_sz = 32768;
474
475 void
zfs_log_write(zilog_t * zilog,dmu_tx_t * tx,int txtype,znode_t * zp,offset_t off,ssize_t resid,int ioflag)476 zfs_log_write(zilog_t *zilog, dmu_tx_t *tx, int txtype,
477 znode_t *zp, offset_t off, ssize_t resid, int ioflag)
478 {
479 itx_wr_state_t write_state;
480 boolean_t slogging;
481 uintptr_t fsync_cnt;
482 ssize_t immediate_write_sz;
483
484 if (zil_replaying(zilog, tx) || zp->z_unlinked)
485 return;
486
487 immediate_write_sz = (zilog->zl_logbias == ZFS_LOGBIAS_THROUGHPUT)
488 ? 0 : zfs_immediate_write_sz;
489
490 slogging = spa_has_slogs(zilog->zl_spa) &&
491 (zilog->zl_logbias == ZFS_LOGBIAS_LATENCY);
492 if (resid > immediate_write_sz && !slogging && resid <= zp->z_blksz)
493 write_state = WR_INDIRECT;
494 else if (ioflag & (FSYNC | FDSYNC))
495 write_state = WR_COPIED;
496 else
497 write_state = WR_NEED_COPY;
498
499 if ((fsync_cnt = (uintptr_t)tsd_get(zfs_fsyncer_key)) != 0) {
500 (void) tsd_set(zfs_fsyncer_key, (void *)(fsync_cnt - 1));
501 }
502
503 while (resid) {
504 itx_t *itx;
505 lr_write_t *lr;
506 ssize_t len;
507
508 /*
509 * If the write would overflow the largest block then split it.
510 */
511 if (write_state != WR_INDIRECT && resid > ZIL_MAX_LOG_DATA)
512 len = SPA_OLD_MAXBLOCKSIZE >> 1;
513 else
514 len = resid;
515
516 itx = zil_itx_create(txtype, sizeof (*lr) +
517 (write_state == WR_COPIED ? len : 0));
518 lr = (lr_write_t *)&itx->itx_lr;
519 if (write_state == WR_COPIED && dmu_read(zp->z_zfsvfs->z_os,
520 zp->z_id, off, len, lr + 1, DMU_READ_NO_PREFETCH) != 0) {
521 zil_itx_destroy(itx);
522 itx = zil_itx_create(txtype, sizeof (*lr));
523 lr = (lr_write_t *)&itx->itx_lr;
524 write_state = WR_NEED_COPY;
525 }
526
527 itx->itx_wr_state = write_state;
528 if (write_state == WR_NEED_COPY)
529 itx->itx_sod += len;
530 lr->lr_foid = zp->z_id;
531 lr->lr_offset = off;
532 lr->lr_length = len;
533 lr->lr_blkoff = 0;
534 BP_ZERO(&lr->lr_blkptr);
535
536 itx->itx_private = zp->z_zfsvfs;
537
538 if (!(ioflag & (FSYNC | FDSYNC)) && (zp->z_sync_cnt == 0) &&
539 (fsync_cnt == 0))
540 itx->itx_sync = B_FALSE;
541
542 zil_itx_assign(zilog, itx, tx);
543
544 if (ZTOV(zp)->v_type == VREG)
545 atomic_add_32(&(zp->z_new_content), 1);
546 rw_enter(&rz_zev_rwlock, RW_READER);
547 if (rz_zev_callbacks && rz_zev_callbacks->rz_zev_znode_write)
548 rz_zev_callbacks->rz_zev_znode_write(zp, tx, off, len);
549 rw_exit(&rz_zev_rwlock);
550
551 off += len;
552 resid -= len;
553 }
554 }
555
556 /*
557 * Handles TX_TRUNCATE transactions.
558 */
559 void
zfs_log_truncate(zilog_t * zilog,dmu_tx_t * tx,int txtype,znode_t * zp,uint64_t off,uint64_t len)560 zfs_log_truncate(zilog_t *zilog, dmu_tx_t *tx, int txtype,
561 znode_t *zp, uint64_t off, uint64_t len)
562 {
563 itx_t *itx;
564 lr_truncate_t *lr;
565
566 if (zil_replaying(zilog, tx) || zp->z_unlinked)
567 return;
568
569 itx = zil_itx_create(txtype, sizeof (*lr));
570 lr = (lr_truncate_t *)&itx->itx_lr;
571 lr->lr_foid = zp->z_id;
572 lr->lr_offset = off;
573 lr->lr_length = len;
574
575 itx->itx_sync = (zp->z_sync_cnt != 0);
576 zil_itx_assign(zilog, itx, tx);
577
578 if (ZTOV(zp)->v_type == VREG)
579 atomic_add_32(&(zp->z_new_content), 1);
580 rw_enter(&rz_zev_rwlock, RW_READER);
581 if (rz_zev_callbacks && rz_zev_callbacks->rz_zev_znode_truncate)
582 rz_zev_callbacks->rz_zev_znode_truncate(zp, tx, off, len);
583 rw_exit(&rz_zev_rwlock);
584 }
585
586 /*
587 * Handles TX_SETATTR transactions.
588 */
589 void
zfs_log_setattr(zilog_t * zilog,dmu_tx_t * tx,int txtype,znode_t * zp,vattr_t * vap,uint_t mask_applied,zfs_fuid_info_t * fuidp)590 zfs_log_setattr(zilog_t *zilog, dmu_tx_t *tx, int txtype,
591 znode_t *zp, vattr_t *vap, uint_t mask_applied, zfs_fuid_info_t *fuidp)
592 {
593 itx_t *itx;
594 lr_setattr_t *lr;
595 xvattr_t *xvap = (xvattr_t *)vap;
596 size_t recsize = sizeof (lr_setattr_t);
597 void *start;
598
599 if (zil_replaying(zilog, tx) || zp->z_unlinked)
600 return;
601
602 /*
603 * If XVATTR set, then log record size needs to allow
604 * for lr_attr_t + xvattr mask, mapsize and create time
605 * plus actual attribute values
606 */
607 if (vap->va_mask & AT_XVATTR)
608 recsize = sizeof (*lr) + ZIL_XVAT_SIZE(xvap->xva_mapsize);
609
610 if (fuidp)
611 recsize += fuidp->z_domain_str_sz;
612
613 itx = zil_itx_create(txtype, recsize);
614 lr = (lr_setattr_t *)&itx->itx_lr;
615 lr->lr_foid = zp->z_id;
616 lr->lr_mask = (uint64_t)mask_applied;
617 lr->lr_mode = (uint64_t)vap->va_mode;
618 if ((mask_applied & AT_UID) && IS_EPHEMERAL(vap->va_uid))
619 lr->lr_uid = fuidp->z_fuid_owner;
620 else
621 lr->lr_uid = (uint64_t)vap->va_uid;
622
623 if ((mask_applied & AT_GID) && IS_EPHEMERAL(vap->va_gid))
624 lr->lr_gid = fuidp->z_fuid_group;
625 else
626 lr->lr_gid = (uint64_t)vap->va_gid;
627
628 lr->lr_size = (uint64_t)vap->va_size;
629 ZFS_TIME_ENCODE(&vap->va_atime, lr->lr_atime);
630 ZFS_TIME_ENCODE(&vap->va_mtime, lr->lr_mtime);
631 start = (lr_setattr_t *)(lr + 1);
632 if (vap->va_mask & AT_XVATTR) {
633 zfs_log_xvattr((lr_attr_t *)start, xvap);
634 start = (caddr_t)start + ZIL_XVAT_SIZE(xvap->xva_mapsize);
635 }
636
637 /*
638 * Now stick on domain information if any on end
639 */
640
641 if (fuidp)
642 (void) zfs_log_fuid_domains(fuidp, start);
643
644 itx->itx_sync = (zp->z_sync_cnt != 0);
645 zil_itx_assign(zilog, itx, tx);
646 }
647
648 /*
649 * Handles TX_ACL transactions.
650 */
651 void
zfs_log_acl(zilog_t * zilog,dmu_tx_t * tx,znode_t * zp,vsecattr_t * vsecp,zfs_fuid_info_t * fuidp)652 zfs_log_acl(zilog_t *zilog, dmu_tx_t *tx, znode_t *zp,
653 vsecattr_t *vsecp, zfs_fuid_info_t *fuidp)
654 {
655 itx_t *itx;
656 lr_acl_v0_t *lrv0;
657 lr_acl_t *lr;
658 int txtype;
659 int lrsize;
660 size_t txsize;
661 size_t aclbytes = vsecp->vsa_aclentsz;
662
663 if (zil_replaying(zilog, tx) || zp->z_unlinked)
664 return;
665
666 txtype = (zp->z_zfsvfs->z_version < ZPL_VERSION_FUID) ?
667 TX_ACL_V0 : TX_ACL;
668
669 if (txtype == TX_ACL)
670 lrsize = sizeof (*lr);
671 else
672 lrsize = sizeof (*lrv0);
673
674 txsize = lrsize +
675 ((txtype == TX_ACL) ? ZIL_ACE_LENGTH(aclbytes) : aclbytes) +
676 (fuidp ? fuidp->z_domain_str_sz : 0) +
677 sizeof (uint64_t) * (fuidp ? fuidp->z_fuid_cnt : 0);
678
679 itx = zil_itx_create(txtype, txsize);
680
681 lr = (lr_acl_t *)&itx->itx_lr;
682 lr->lr_foid = zp->z_id;
683 if (txtype == TX_ACL) {
684 lr->lr_acl_bytes = aclbytes;
685 lr->lr_domcnt = fuidp ? fuidp->z_domain_cnt : 0;
686 lr->lr_fuidcnt = fuidp ? fuidp->z_fuid_cnt : 0;
687 if (vsecp->vsa_mask & VSA_ACE_ACLFLAGS)
688 lr->lr_acl_flags = (uint64_t)vsecp->vsa_aclflags;
689 else
690 lr->lr_acl_flags = 0;
691 }
692 lr->lr_aclcnt = (uint64_t)vsecp->vsa_aclcnt;
693
694 if (txtype == TX_ACL_V0) {
695 lrv0 = (lr_acl_v0_t *)lr;
696 bcopy(vsecp->vsa_aclentp, (ace_t *)(lrv0 + 1), aclbytes);
697 } else {
698 void *start = (ace_t *)(lr + 1);
699
700 bcopy(vsecp->vsa_aclentp, start, aclbytes);
701
702 start = (caddr_t)start + ZIL_ACE_LENGTH(aclbytes);
703
704 if (fuidp) {
705 start = zfs_log_fuid_ids(fuidp, start);
706 (void) zfs_log_fuid_domains(fuidp, start);
707 }
708 }
709
710 itx->itx_sync = (zp->z_sync_cnt != 0);
711 zil_itx_assign(zilog, itx, tx);
712
713 rw_enter(&rz_zev_rwlock, RW_READER);
714 if (rz_zev_callbacks && rz_zev_callbacks->rz_zev_znode_acl)
715 rz_zev_callbacks->rz_zev_znode_acl(zp, tx);
716 rw_exit(&rz_zev_rwlock);
717 }
718