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) 2015 by Delphix. All rights reserved.
24 * Copyright (c) 2014 Integros [integros.com]
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/vfs.h>
36 #include <sys/zfs_znode.h>
37 #include <sys/zfs_dir.h>
38 #include <sys/zil.h>
39 #include <sys/zil_impl.h>
40 #include <sys/byteorder.h>
41 #include <sys/policy.h>
42 #include <sys/stat.h>
43 #include <sys/mode.h>
44 #include <sys/acl.h>
45 #include <sys/dmu.h>
46 #include <sys/spa.h>
47 #include <sys/zfs_fuid.h>
48 #include <sys/ddi.h>
49 #include <sys/dsl_dataset.h>
50 #include <sys/zfs_events.h>
51
52 /*
53 * These zfs_log_* functions must be called within a dmu tx, in one
54 * of 2 contexts depending on zilog->z_replay:
55 *
56 * Non replay mode
57 * ---------------
58 * We need to record the transaction so that if it is committed to
59 * the Intent Log then it can be replayed. An intent log transaction
60 * structure (itx_t) is allocated and all the information necessary to
61 * possibly replay the transaction is saved in it. The itx is then assigned
62 * a sequence number and inserted in the in-memory list anchored in the zilog.
63 *
64 * Replay mode
65 * -----------
66 * We need to mark the intent log record as replayed in the log header.
67 * This is done in the same transaction as the replay so that they
68 * commit atomically.
69 */
70
71 int
zfs_log_create_txtype(zil_create_t type,vsecattr_t * vsecp,vattr_t * vap)72 zfs_log_create_txtype(zil_create_t type, vsecattr_t *vsecp, vattr_t *vap)
73 {
74 int isxvattr = (vap->va_mask & AT_XVATTR);
75 switch (type) {
76 case Z_FILE:
77 if (vsecp == NULL && !isxvattr)
78 return (TX_CREATE);
79 if (vsecp && isxvattr)
80 return (TX_CREATE_ACL_ATTR);
81 if (vsecp)
82 return (TX_CREATE_ACL);
83 else
84 return (TX_CREATE_ATTR);
85 /*NOTREACHED*/
86 case Z_DIR:
87 if (vsecp == NULL && !isxvattr)
88 return (TX_MKDIR);
89 if (vsecp && isxvattr)
90 return (TX_MKDIR_ACL_ATTR);
91 if (vsecp)
92 return (TX_MKDIR_ACL);
93 else
94 return (TX_MKDIR_ATTR);
95 case Z_XATTRDIR:
96 return (TX_MKXATTR);
97 }
98 ASSERT(0);
99 return (TX_MAX_TYPE);
100 }
101
102 /*
103 * build up the log data necessary for logging xvattr_t
104 * First lr_attr_t is initialized. following the lr_attr_t
105 * is the mapsize and attribute bitmap copied from the xvattr_t.
106 * Following the bitmap and bitmapsize two 64 bit words are reserved
107 * for the create time which may be set. Following the create time
108 * records a single 64 bit integer which has the bits to set on
109 * replay for the xvattr.
110 */
111 static void
zfs_log_xvattr(lr_attr_t * lrattr,xvattr_t * xvap)112 zfs_log_xvattr(lr_attr_t *lrattr, xvattr_t *xvap)
113 {
114 uint32_t *bitmap;
115 uint64_t *attrs;
116 uint64_t *crtime;
117 xoptattr_t *xoap;
118 void *scanstamp;
119 int i;
120
121 xoap = xva_getxoptattr(xvap);
122 ASSERT(xoap);
123
124 lrattr->lr_attr_masksize = xvap->xva_mapsize;
125 bitmap = &lrattr->lr_attr_bitmap;
126 for (i = 0; i != xvap->xva_mapsize; i++, bitmap++) {
127 *bitmap = xvap->xva_reqattrmap[i];
128 }
129
130 /* Now pack the attributes up in a single uint64_t */
131 attrs = (uint64_t *)bitmap;
132 crtime = attrs + 1;
133 scanstamp = (caddr_t)(crtime + 2);
134 *attrs = 0;
135 if (XVA_ISSET_REQ(xvap, XAT_READONLY))
136 *attrs |= (xoap->xoa_readonly == 0) ? 0 :
137 XAT0_READONLY;
138 if (XVA_ISSET_REQ(xvap, XAT_HIDDEN))
139 *attrs |= (xoap->xoa_hidden == 0) ? 0 :
140 XAT0_HIDDEN;
141 if (XVA_ISSET_REQ(xvap, XAT_SYSTEM))
142 *attrs |= (xoap->xoa_system == 0) ? 0 :
143 XAT0_SYSTEM;
144 if (XVA_ISSET_REQ(xvap, XAT_ARCHIVE))
145 *attrs |= (xoap->xoa_archive == 0) ? 0 :
146 XAT0_ARCHIVE;
147 if (XVA_ISSET_REQ(xvap, XAT_IMMUTABLE))
148 *attrs |= (xoap->xoa_immutable == 0) ? 0 :
149 XAT0_IMMUTABLE;
150 if (XVA_ISSET_REQ(xvap, XAT_NOUNLINK))
151 *attrs |= (xoap->xoa_nounlink == 0) ? 0 :
152 XAT0_NOUNLINK;
153 if (XVA_ISSET_REQ(xvap, XAT_APPENDONLY))
154 *attrs |= (xoap->xoa_appendonly == 0) ? 0 :
155 XAT0_APPENDONLY;
156 if (XVA_ISSET_REQ(xvap, XAT_OPAQUE))
157 *attrs |= (xoap->xoa_opaque == 0) ? 0 :
158 XAT0_APPENDONLY;
159 if (XVA_ISSET_REQ(xvap, XAT_NODUMP))
160 *attrs |= (xoap->xoa_nodump == 0) ? 0 :
161 XAT0_NODUMP;
162 if (XVA_ISSET_REQ(xvap, XAT_AV_QUARANTINED))
163 *attrs |= (xoap->xoa_av_quarantined == 0) ? 0 :
164 XAT0_AV_QUARANTINED;
165 if (XVA_ISSET_REQ(xvap, XAT_AV_MODIFIED))
166 *attrs |= (xoap->xoa_av_modified == 0) ? 0 :
167 XAT0_AV_MODIFIED;
168 if (XVA_ISSET_REQ(xvap, XAT_CREATETIME))
169 ZFS_TIME_ENCODE(&xoap->xoa_createtime, crtime);
170 if (XVA_ISSET_REQ(xvap, XAT_AV_SCANSTAMP))
171 bcopy(xoap->xoa_av_scanstamp, scanstamp, AV_SCANSTAMP_SZ);
172 if (XVA_ISSET_REQ(xvap, XAT_REPARSE))
173 *attrs |= (xoap->xoa_reparse == 0) ? 0 :
174 XAT0_REPARSE;
175 if (XVA_ISSET_REQ(xvap, XAT_OFFLINE))
176 *attrs |= (xoap->xoa_offline == 0) ? 0 :
177 XAT0_OFFLINE;
178 if (XVA_ISSET_REQ(xvap, XAT_SPARSE))
179 *attrs |= (xoap->xoa_sparse == 0) ? 0 :
180 XAT0_SPARSE;
181 }
182
183 static void *
zfs_log_fuid_ids(zfs_fuid_info_t * fuidp,void * start)184 zfs_log_fuid_ids(zfs_fuid_info_t *fuidp, void *start)
185 {
186 zfs_fuid_t *zfuid;
187 uint64_t *fuidloc = start;
188
189 /* First copy in the ACE FUIDs */
190 for (zfuid = list_head(&fuidp->z_fuids); zfuid;
191 zfuid = list_next(&fuidp->z_fuids, zfuid)) {
192 *fuidloc++ = zfuid->z_logfuid;
193 }
194 return (fuidloc);
195 }
196
197
198 static void *
zfs_log_fuid_domains(zfs_fuid_info_t * fuidp,void * start)199 zfs_log_fuid_domains(zfs_fuid_info_t *fuidp, void *start)
200 {
201 zfs_fuid_domain_t *zdomain;
202
203 /* now copy in the domain info, if any */
204 if (fuidp->z_domain_str_sz != 0) {
205 for (zdomain = list_head(&fuidp->z_domains); zdomain;
206 zdomain = list_next(&fuidp->z_domains, zdomain)) {
207 bcopy((void *)zdomain->z_domain, start,
208 strlen(zdomain->z_domain) + 1);
209 start = (caddr_t)start +
210 strlen(zdomain->z_domain) + 1;
211 }
212 }
213 return (start);
214 }
215
216 /*
217 * Handles TX_CREATE, TX_CREATE_ATTR, TX_MKDIR, TX_MKDIR_ATTR and
218 * TK_MKXATTR transactions.
219 *
220 * TX_CREATE and TX_MKDIR are standard creates, but they may have FUID
221 * domain information appended prior to the name. In this case the
222 * uid/gid in the log record will be a log centric FUID.
223 *
224 * TX_CREATE_ACL_ATTR and TX_MKDIR_ACL_ATTR handle special creates that
225 * may contain attributes, ACL and optional fuid information.
226 *
227 * TX_CREATE_ACL and TX_MKDIR_ACL handle special creates that specify
228 * and ACL and normal users/groups in the ACEs.
229 *
230 * There may be an optional xvattr attribute information similar
231 * to zfs_log_setattr.
232 *
233 * Also, after the file name "domain" strings may be appended.
234 */
235 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)236 zfs_log_create(zilog_t *zilog, dmu_tx_t *tx, uint64_t txtype,
237 znode_t *dzp, znode_t *zp, char *name, vsecattr_t *vsecp,
238 zfs_fuid_info_t *fuidp, vattr_t *vap)
239 {
240 itx_t *itx;
241 lr_create_t *lr;
242 lr_acl_create_t *lracl;
243 size_t aclsize = (vsecp != NULL) ? vsecp->vsa_aclentsz : 0;
244 size_t xvatsize = 0;
245 size_t txsize;
246 xvattr_t *xvap = (xvattr_t *)vap;
247 void *end;
248 size_t lrsize;
249 size_t namesize = strlen(name) + 1;
250 size_t fuidsz = 0;
251
252 if (zil_replaying(zilog, tx))
253 return;
254
255 /*
256 * If we have FUIDs present then add in space for
257 * domains and ACE fuid's if any.
258 */
259 if (fuidp) {
260 fuidsz += fuidp->z_domain_str_sz;
261 fuidsz += fuidp->z_fuid_cnt * sizeof (uint64_t);
262 }
263
264 if (vap->va_mask & AT_XVATTR)
265 xvatsize = ZIL_XVAT_SIZE(xvap->xva_mapsize);
266
267 if ((int)txtype == TX_CREATE_ATTR || (int)txtype == TX_MKDIR_ATTR ||
268 (int)txtype == TX_CREATE || (int)txtype == TX_MKDIR ||
269 (int)txtype == TX_MKXATTR) {
270 txsize = sizeof (*lr) + namesize + fuidsz + xvatsize;
271 lrsize = sizeof (*lr);
272 } else {
273 txsize =
274 sizeof (lr_acl_create_t) + namesize + fuidsz +
275 ZIL_ACE_LENGTH(aclsize) + xvatsize;
276 lrsize = sizeof (lr_acl_create_t);
277 }
278
279 itx = zil_itx_create(txtype, txsize);
280
281 lr = (lr_create_t *)&itx->itx_lr;
282 lr->lr_doid = dzp->z_id;
283 lr->lr_foid = zp->z_id;
284 lr->lr_mode = zp->z_mode;
285 if (!IS_EPHEMERAL(zp->z_uid)) {
286 lr->lr_uid = (uint64_t)zp->z_uid;
287 } else {
288 lr->lr_uid = fuidp->z_fuid_owner;
289 }
290 if (!IS_EPHEMERAL(zp->z_gid)) {
291 lr->lr_gid = (uint64_t)zp->z_gid;
292 } else {
293 lr->lr_gid = fuidp->z_fuid_group;
294 }
295 (void) sa_lookup(zp->z_sa_hdl, SA_ZPL_GEN(zp->z_zfsvfs), &lr->lr_gen,
296 sizeof (uint64_t));
297 (void) sa_lookup(zp->z_sa_hdl, SA_ZPL_CRTIME(zp->z_zfsvfs),
298 lr->lr_crtime, sizeof (uint64_t) * 2);
299
300 if (sa_lookup(zp->z_sa_hdl, SA_ZPL_RDEV(zp->z_zfsvfs), &lr->lr_rdev,
301 sizeof (lr->lr_rdev)) != 0)
302 lr->lr_rdev = 0;
303
304 /*
305 * Fill in xvattr info if any
306 */
307 if (vap->va_mask & AT_XVATTR) {
308 zfs_log_xvattr((lr_attr_t *)((caddr_t)lr + lrsize), xvap);
309 end = (caddr_t)lr + lrsize + xvatsize;
310 } else {
311 end = (caddr_t)lr + lrsize;
312 }
313
314 /* Now fill in any ACL info */
315
316 if (vsecp) {
317 lracl = (lr_acl_create_t *)&itx->itx_lr;
318 lracl->lr_aclcnt = vsecp->vsa_aclcnt;
319 lracl->lr_acl_bytes = aclsize;
320 lracl->lr_domcnt = fuidp ? fuidp->z_domain_cnt : 0;
321 lracl->lr_fuidcnt = fuidp ? fuidp->z_fuid_cnt : 0;
322 if (vsecp->vsa_aclflags & VSA_ACE_ACLFLAGS)
323 lracl->lr_acl_flags = (uint64_t)vsecp->vsa_aclflags;
324 else
325 lracl->lr_acl_flags = 0;
326
327 bcopy(vsecp->vsa_aclentp, end, aclsize);
328 end = (caddr_t)end + ZIL_ACE_LENGTH(aclsize);
329 }
330
331 /* drop in FUID info */
332 if (fuidp) {
333 end = zfs_log_fuid_ids(fuidp, end);
334 end = zfs_log_fuid_domains(fuidp, end);
335 }
336 /*
337 * Now place file name in log record
338 */
339 bcopy(name, end, namesize);
340
341 zil_itx_assign(zilog, itx, tx);
342
343 rw_enter(&rz_zev_rwlock, RW_READER);
344 if (rz_zev_callbacks && rz_zev_callbacks->rz_zev_znode_create)
345 rz_zev_callbacks->rz_zev_znode_create(dzp, zp, tx, name,
346 txtype);
347 rw_exit(&rz_zev_rwlock);
348 }
349
350 /*
351 * Handles both TX_REMOVE and TX_RMDIR transactions.
352 */
353 void
zfs_log_remove(zilog_t * zilog,dmu_tx_t * tx,uint64_t txtype,znode_t * dzp,char * name,uint64_t foid)354 zfs_log_remove(zilog_t *zilog, dmu_tx_t *tx, uint64_t txtype,
355 znode_t *dzp, char *name, uint64_t foid)
356 {
357 itx_t *itx;
358 lr_remove_t *lr;
359 size_t namesize = strlen(name) + 1;
360
361 if (zil_replaying(zilog, tx))
362 return;
363
364 itx = zil_itx_create(txtype, sizeof (*lr) + namesize);
365 lr = (lr_remove_t *)&itx->itx_lr;
366 lr->lr_doid = dzp->z_id;
367 bcopy(name, (char *)(lr + 1), namesize);
368
369 itx->itx_oid = foid;
370
371 zil_itx_assign(zilog, itx, tx);
372 }
373
374 /*
375 * Handles TX_LINK transactions.
376 */
377 void
zfs_log_link(zilog_t * zilog,dmu_tx_t * tx,uint64_t txtype,znode_t * dzp,znode_t * zp,char * name)378 zfs_log_link(zilog_t *zilog, dmu_tx_t *tx, uint64_t txtype,
379 znode_t *dzp, znode_t *zp, char *name)
380 {
381 itx_t *itx;
382 lr_link_t *lr;
383 size_t namesize = strlen(name) + 1;
384
385 if (zil_replaying(zilog, tx))
386 return;
387
388 itx = zil_itx_create(txtype, sizeof (*lr) + namesize);
389 lr = (lr_link_t *)&itx->itx_lr;
390 lr->lr_doid = dzp->z_id;
391 lr->lr_link_obj = zp->z_id;
392 bcopy(name, (char *)(lr + 1), namesize);
393
394 zil_itx_assign(zilog, itx, tx);
395
396 rw_enter(&rz_zev_rwlock, RW_READER);
397 if (rz_zev_callbacks && rz_zev_callbacks->rz_zev_znode_link)
398 rz_zev_callbacks->rz_zev_znode_link(dzp, zp, tx, name);
399 rw_exit(&rz_zev_rwlock);
400 }
401
402 /*
403 * Handles TX_SYMLINK transactions.
404 */
405 void
zfs_log_symlink(zilog_t * zilog,dmu_tx_t * tx,uint64_t txtype,znode_t * dzp,znode_t * zp,char * name,char * link)406 zfs_log_symlink(zilog_t *zilog, dmu_tx_t *tx, uint64_t txtype,
407 znode_t *dzp, znode_t *zp, char *name, char *link)
408 {
409 itx_t *itx;
410 lr_create_t *lr;
411 size_t namesize = strlen(name) + 1;
412 size_t linksize = strlen(link) + 1;
413
414 if (zil_replaying(zilog, tx))
415 return;
416
417 itx = zil_itx_create(txtype, sizeof (*lr) + namesize + linksize);
418 lr = (lr_create_t *)&itx->itx_lr;
419 lr->lr_doid = dzp->z_id;
420 lr->lr_foid = zp->z_id;
421 lr->lr_uid = zp->z_uid;
422 lr->lr_gid = zp->z_gid;
423 lr->lr_mode = zp->z_mode;
424 (void) sa_lookup(zp->z_sa_hdl, SA_ZPL_GEN(zp->z_zfsvfs), &lr->lr_gen,
425 sizeof (uint64_t));
426 (void) sa_lookup(zp->z_sa_hdl, SA_ZPL_CRTIME(zp->z_zfsvfs),
427 lr->lr_crtime, sizeof (uint64_t) * 2);
428 bcopy(name, (char *)(lr + 1), namesize);
429 bcopy(link, (char *)(lr + 1) + namesize, linksize);
430
431 zil_itx_assign(zilog, itx, tx);
432
433 rw_enter(&rz_zev_rwlock, RW_READER);
434 if (rz_zev_callbacks && rz_zev_callbacks->rz_zev_znode_symlink)
435 rz_zev_callbacks->rz_zev_znode_symlink(dzp, zp, tx, name, link);
436 rw_exit(&rz_zev_rwlock);
437 }
438
439 /*
440 * Handles TX_RENAME transactions.
441 */
442 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)443 zfs_log_rename(zilog_t *zilog, dmu_tx_t *tx, uint64_t txtype,
444 znode_t *sdzp, char *sname, znode_t *tdzp, char *dname, znode_t *szp,
445 znode_t *tzp)
446 {
447 itx_t *itx;
448 lr_rename_t *lr;
449 size_t snamesize = strlen(sname) + 1;
450 size_t dnamesize = strlen(dname) + 1;
451
452 if (zil_replaying(zilog, tx))
453 return;
454
455 itx = zil_itx_create(txtype, sizeof (*lr) + snamesize + dnamesize);
456 lr = (lr_rename_t *)&itx->itx_lr;
457 lr->lr_sdoid = sdzp->z_id;
458 lr->lr_tdoid = tdzp->z_id;
459 bcopy(sname, (char *)(lr + 1), snamesize);
460 bcopy(dname, (char *)(lr + 1) + snamesize, dnamesize);
461 itx->itx_oid = szp->z_id;
462
463 zil_itx_assign(zilog, itx, tx);
464
465 rw_enter(&rz_zev_rwlock, RW_READER);
466 if (rz_zev_callbacks && rz_zev_callbacks->rz_zev_znode_rename)
467 rz_zev_callbacks->rz_zev_znode_rename(sdzp,
468 sname, tdzp, dname, szp, tzp, tx);
469 rw_exit(&rz_zev_rwlock);
470 }
471
472 /*
473 * Handles TX_WRITE transactions.
474 */
475 ssize_t zfs_immediate_write_sz = 32768;
476
477 void
zfs_log_write(zilog_t * zilog,dmu_tx_t * tx,int txtype,znode_t * zp,offset_t off,ssize_t resid,int ioflag)478 zfs_log_write(zilog_t *zilog, dmu_tx_t *tx, int txtype,
479 znode_t *zp, offset_t off, ssize_t resid, int ioflag)
480 {
481 itx_wr_state_t write_state;
482 boolean_t slogging;
483 uintptr_t fsync_cnt;
484 ssize_t immediate_write_sz;
485
486 if (zil_replaying(zilog, tx) || zp->z_unlinked)
487 return;
488
489 immediate_write_sz = (zilog->zl_logbias == ZFS_LOGBIAS_THROUGHPUT)
490 ? 0 : zfs_immediate_write_sz;
491
492 slogging = spa_has_slogs(zilog->zl_spa) &&
493 (zilog->zl_logbias == ZFS_LOGBIAS_LATENCY);
494 if (resid > immediate_write_sz && !slogging && resid <= zp->z_blksz)
495 write_state = WR_INDIRECT;
496 else if (ioflag & (FSYNC | FDSYNC))
497 write_state = WR_COPIED;
498 else
499 write_state = WR_NEED_COPY;
500
501 if ((fsync_cnt = (uintptr_t)tsd_get(zfs_fsyncer_key)) != 0) {
502 (void) tsd_set(zfs_fsyncer_key, (void *)(fsync_cnt - 1));
503 }
504
505 while (resid) {
506 itx_t *itx;
507 lr_write_t *lr;
508 ssize_t len;
509
510 /*
511 * If the write would overflow the largest block then split it.
512 */
513 if (write_state != WR_INDIRECT && resid > ZIL_MAX_LOG_DATA)
514 len = SPA_OLD_MAXBLOCKSIZE >> 1;
515 else
516 len = resid;
517
518 itx = zil_itx_create(txtype, sizeof (*lr) +
519 (write_state == WR_COPIED ? len : 0));
520 lr = (lr_write_t *)&itx->itx_lr;
521 if (write_state == WR_COPIED && dmu_read(zp->z_zfsvfs->z_os,
522 zp->z_id, off, len, lr + 1, DMU_READ_NO_PREFETCH) != 0) {
523 zil_itx_destroy(itx);
524 itx = zil_itx_create(txtype, sizeof (*lr));
525 lr = (lr_write_t *)&itx->itx_lr;
526 write_state = WR_NEED_COPY;
527 }
528
529 itx->itx_wr_state = write_state;
530 if (write_state == WR_NEED_COPY)
531 itx->itx_sod += len;
532 lr->lr_foid = zp->z_id;
533 lr->lr_offset = off;
534 lr->lr_length = len;
535 lr->lr_blkoff = 0;
536 BP_ZERO(&lr->lr_blkptr);
537
538 itx->itx_private = zp->z_zfsvfs;
539
540 if (!(ioflag & (FSYNC | FDSYNC)) && (zp->z_sync_cnt == 0) &&
541 (fsync_cnt == 0))
542 itx->itx_sync = B_FALSE;
543
544 zil_itx_assign(zilog, itx, tx);
545
546 if (ZTOV(zp)->v_type == VREG)
547 atomic_add_32(&(zp->z_new_content), 1);
548 rw_enter(&rz_zev_rwlock, RW_READER);
549 if (rz_zev_callbacks && rz_zev_callbacks->rz_zev_znode_write)
550 rz_zev_callbacks->rz_zev_znode_write(zp, tx, off, len);
551 rw_exit(&rz_zev_rwlock);
552
553 off += len;
554 resid -= len;
555 }
556 }
557
558 /*
559 * Handles TX_TRUNCATE transactions.
560 */
561 void
zfs_log_truncate(zilog_t * zilog,dmu_tx_t * tx,int txtype,znode_t * zp,uint64_t off,uint64_t len)562 zfs_log_truncate(zilog_t *zilog, dmu_tx_t *tx, int txtype,
563 znode_t *zp, uint64_t off, uint64_t len)
564 {
565 itx_t *itx;
566 lr_truncate_t *lr;
567
568 if (zil_replaying(zilog, tx) || zp->z_unlinked)
569 return;
570
571 itx = zil_itx_create(txtype, sizeof (*lr));
572 lr = (lr_truncate_t *)&itx->itx_lr;
573 lr->lr_foid = zp->z_id;
574 lr->lr_offset = off;
575 lr->lr_length = len;
576
577 itx->itx_sync = (zp->z_sync_cnt != 0);
578 zil_itx_assign(zilog, itx, tx);
579
580 if (ZTOV(zp)->v_type == VREG)
581 atomic_add_32(&(zp->z_new_content), 1);
582 rw_enter(&rz_zev_rwlock, RW_READER);
583 if (rz_zev_callbacks && rz_zev_callbacks->rz_zev_znode_truncate)
584 rz_zev_callbacks->rz_zev_znode_truncate(zp, tx, off, len);
585 rw_exit(&rz_zev_rwlock);
586 }
587
588 /*
589 * Handles TX_SETATTR transactions.
590 */
591 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)592 zfs_log_setattr(zilog_t *zilog, dmu_tx_t *tx, int txtype,
593 znode_t *zp, vattr_t *vap, uint_t mask_applied, zfs_fuid_info_t *fuidp)
594 {
595 itx_t *itx;
596 lr_setattr_t *lr;
597 xvattr_t *xvap = (xvattr_t *)vap;
598 size_t recsize = sizeof (lr_setattr_t);
599 void *start;
600
601 if (zil_replaying(zilog, tx) || zp->z_unlinked)
602 return;
603
604 /*
605 * If XVATTR set, then log record size needs to allow
606 * for lr_attr_t + xvattr mask, mapsize and create time
607 * plus actual attribute values
608 */
609 if (vap->va_mask & AT_XVATTR)
610 recsize = sizeof (*lr) + ZIL_XVAT_SIZE(xvap->xva_mapsize);
611
612 if (fuidp)
613 recsize += fuidp->z_domain_str_sz;
614
615 itx = zil_itx_create(txtype, recsize);
616 lr = (lr_setattr_t *)&itx->itx_lr;
617 lr->lr_foid = zp->z_id;
618 lr->lr_mask = (uint64_t)mask_applied;
619 lr->lr_mode = (uint64_t)vap->va_mode;
620 if ((mask_applied & AT_UID) && IS_EPHEMERAL(vap->va_uid))
621 lr->lr_uid = fuidp->z_fuid_owner;
622 else
623 lr->lr_uid = (uint64_t)vap->va_uid;
624
625 if ((mask_applied & AT_GID) && IS_EPHEMERAL(vap->va_gid))
626 lr->lr_gid = fuidp->z_fuid_group;
627 else
628 lr->lr_gid = (uint64_t)vap->va_gid;
629
630 lr->lr_size = (uint64_t)vap->va_size;
631 ZFS_TIME_ENCODE(&vap->va_atime, lr->lr_atime);
632 ZFS_TIME_ENCODE(&vap->va_mtime, lr->lr_mtime);
633 start = (lr_setattr_t *)(lr + 1);
634 if (vap->va_mask & AT_XVATTR) {
635 zfs_log_xvattr((lr_attr_t *)start, xvap);
636 start = (caddr_t)start + ZIL_XVAT_SIZE(xvap->xva_mapsize);
637 }
638
639 /*
640 * Now stick on domain information if any on end
641 */
642
643 if (fuidp)
644 (void) zfs_log_fuid_domains(fuidp, start);
645
646 itx->itx_sync = (zp->z_sync_cnt != 0);
647 zil_itx_assign(zilog, itx, tx);
648 }
649
650 /*
651 * Handles TX_ACL transactions.
652 */
653 void
zfs_log_acl(zilog_t * zilog,dmu_tx_t * tx,znode_t * zp,vsecattr_t * vsecp,zfs_fuid_info_t * fuidp)654 zfs_log_acl(zilog_t *zilog, dmu_tx_t *tx, znode_t *zp,
655 vsecattr_t *vsecp, zfs_fuid_info_t *fuidp)
656 {
657 itx_t *itx;
658 lr_acl_v0_t *lrv0;
659 lr_acl_t *lr;
660 int txtype;
661 int lrsize;
662 size_t txsize;
663 size_t aclbytes = vsecp->vsa_aclentsz;
664
665 if (zil_replaying(zilog, tx) || zp->z_unlinked)
666 return;
667
668 txtype = (zp->z_zfsvfs->z_version < ZPL_VERSION_FUID) ?
669 TX_ACL_V0 : TX_ACL;
670
671 if (txtype == TX_ACL)
672 lrsize = sizeof (*lr);
673 else
674 lrsize = sizeof (*lrv0);
675
676 txsize = lrsize +
677 ((txtype == TX_ACL) ? ZIL_ACE_LENGTH(aclbytes) : aclbytes) +
678 (fuidp ? fuidp->z_domain_str_sz : 0) +
679 sizeof (uint64_t) * (fuidp ? fuidp->z_fuid_cnt : 0);
680
681 itx = zil_itx_create(txtype, txsize);
682
683 lr = (lr_acl_t *)&itx->itx_lr;
684 lr->lr_foid = zp->z_id;
685 if (txtype == TX_ACL) {
686 lr->lr_acl_bytes = aclbytes;
687 lr->lr_domcnt = fuidp ? fuidp->z_domain_cnt : 0;
688 lr->lr_fuidcnt = fuidp ? fuidp->z_fuid_cnt : 0;
689 if (vsecp->vsa_mask & VSA_ACE_ACLFLAGS)
690 lr->lr_acl_flags = (uint64_t)vsecp->vsa_aclflags;
691 else
692 lr->lr_acl_flags = 0;
693 }
694 lr->lr_aclcnt = (uint64_t)vsecp->vsa_aclcnt;
695
696 if (txtype == TX_ACL_V0) {
697 lrv0 = (lr_acl_v0_t *)lr;
698 bcopy(vsecp->vsa_aclentp, (ace_t *)(lrv0 + 1), aclbytes);
699 } else {
700 void *start = (ace_t *)(lr + 1);
701
702 bcopy(vsecp->vsa_aclentp, start, aclbytes);
703
704 start = (caddr_t)start + ZIL_ACE_LENGTH(aclbytes);
705
706 if (fuidp) {
707 start = zfs_log_fuid_ids(fuidp, start);
708 (void) zfs_log_fuid_domains(fuidp, start);
709 }
710 }
711
712 itx->itx_sync = (zp->z_sync_cnt != 0);
713 zil_itx_assign(zilog, itx, tx);
714
715 rw_enter(&rz_zev_rwlock, RW_READER);
716 if (rz_zev_callbacks && rz_zev_callbacks->rz_zev_znode_acl)
717 rz_zev_callbacks->rz_zev_znode_acl(zp, tx);
718 rw_exit(&rz_zev_rwlock);
719 }
720