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
51 /*
52 * These zfs_log_* functions must be called within a dmu tx, in one
53 * of 2 contexts depending on zilog->z_replay:
54 *
55 * Non replay mode
56 * ---------------
57 * We need to record the transaction so that if it is committed to
58 * the Intent Log then it can be replayed. An intent log transaction
59 * structure (itx_t) is allocated and all the information necessary to
60 * possibly replay the transaction is saved in it. The itx is then assigned
61 * a sequence number and inserted in the in-memory list anchored in the zilog.
62 *
63 * Replay mode
64 * -----------
65 * We need to mark the intent log record as replayed in the log header.
66 * This is done in the same transaction as the replay so that they
67 * commit atomically.
68 */
69
70 int
zfs_log_create_txtype(zil_create_t type,vsecattr_t * vsecp,vattr_t * vap)71 zfs_log_create_txtype(zil_create_t type, vsecattr_t *vsecp, vattr_t *vap)
72 {
73 int isxvattr = (vap->va_mask & AT_XVATTR);
74 switch (type) {
75 case Z_FILE:
76 if (vsecp == NULL && !isxvattr)
77 return (TX_CREATE);
78 if (vsecp && isxvattr)
79 return (TX_CREATE_ACL_ATTR);
80 if (vsecp)
81 return (TX_CREATE_ACL);
82 else
83 return (TX_CREATE_ATTR);
84 /*NOTREACHED*/
85 case Z_DIR:
86 if (vsecp == NULL && !isxvattr)
87 return (TX_MKDIR);
88 if (vsecp && isxvattr)
89 return (TX_MKDIR_ACL_ATTR);
90 if (vsecp)
91 return (TX_MKDIR_ACL);
92 else
93 return (TX_MKDIR_ATTR);
94 case Z_XATTRDIR:
95 return (TX_MKXATTR);
96 }
97 ASSERT(0);
98 return (TX_MAX_TYPE);
99 }
100
101 /*
102 * build up the log data necessary for logging xvattr_t
103 * First lr_attr_t is initialized. following the lr_attr_t
104 * is the mapsize and attribute bitmap copied from the xvattr_t.
105 * Following the bitmap and bitmapsize two 64 bit words are reserved
106 * for the create time which may be set. Following the create time
107 * records a single 64 bit integer which has the bits to set on
108 * replay for the xvattr.
109 */
110 static void
zfs_log_xvattr(lr_attr_t * lrattr,xvattr_t * xvap)111 zfs_log_xvattr(lr_attr_t *lrattr, xvattr_t *xvap)
112 {
113 uint32_t *bitmap;
114 uint64_t *attrs;
115 uint64_t *crtime;
116 xoptattr_t *xoap;
117 void *scanstamp;
118 int i;
119
120 xoap = xva_getxoptattr(xvap);
121 ASSERT(xoap);
122
123 lrattr->lr_attr_masksize = xvap->xva_mapsize;
124 bitmap = &lrattr->lr_attr_bitmap;
125 for (i = 0; i != xvap->xva_mapsize; i++, bitmap++) {
126 *bitmap = xvap->xva_reqattrmap[i];
127 }
128
129 /* Now pack the attributes up in a single uint64_t */
130 attrs = (uint64_t *)bitmap;
131 crtime = attrs + 1;
132 scanstamp = (caddr_t)(crtime + 2);
133 *attrs = 0;
134 if (XVA_ISSET_REQ(xvap, XAT_READONLY))
135 *attrs |= (xoap->xoa_readonly == 0) ? 0 :
136 XAT0_READONLY;
137 if (XVA_ISSET_REQ(xvap, XAT_HIDDEN))
138 *attrs |= (xoap->xoa_hidden == 0) ? 0 :
139 XAT0_HIDDEN;
140 if (XVA_ISSET_REQ(xvap, XAT_SYSTEM))
141 *attrs |= (xoap->xoa_system == 0) ? 0 :
142 XAT0_SYSTEM;
143 if (XVA_ISSET_REQ(xvap, XAT_ARCHIVE))
144 *attrs |= (xoap->xoa_archive == 0) ? 0 :
145 XAT0_ARCHIVE;
146 if (XVA_ISSET_REQ(xvap, XAT_IMMUTABLE))
147 *attrs |= (xoap->xoa_immutable == 0) ? 0 :
148 XAT0_IMMUTABLE;
149 if (XVA_ISSET_REQ(xvap, XAT_NOUNLINK))
150 *attrs |= (xoap->xoa_nounlink == 0) ? 0 :
151 XAT0_NOUNLINK;
152 if (XVA_ISSET_REQ(xvap, XAT_APPENDONLY))
153 *attrs |= (xoap->xoa_appendonly == 0) ? 0 :
154 XAT0_APPENDONLY;
155 if (XVA_ISSET_REQ(xvap, XAT_OPAQUE))
156 *attrs |= (xoap->xoa_opaque == 0) ? 0 :
157 XAT0_APPENDONLY;
158 if (XVA_ISSET_REQ(xvap, XAT_NODUMP))
159 *attrs |= (xoap->xoa_nodump == 0) ? 0 :
160 XAT0_NODUMP;
161 if (XVA_ISSET_REQ(xvap, XAT_AV_QUARANTINED))
162 *attrs |= (xoap->xoa_av_quarantined == 0) ? 0 :
163 XAT0_AV_QUARANTINED;
164 if (XVA_ISSET_REQ(xvap, XAT_AV_MODIFIED))
165 *attrs |= (xoap->xoa_av_modified == 0) ? 0 :
166 XAT0_AV_MODIFIED;
167 if (XVA_ISSET_REQ(xvap, XAT_CREATETIME))
168 ZFS_TIME_ENCODE(&xoap->xoa_createtime, crtime);
169 if (XVA_ISSET_REQ(xvap, XAT_AV_SCANSTAMP)) {
170 ASSERT(!XVA_ISSET_REQ(xvap, XAT_PROJID));
171
172 bcopy(xoap->xoa_av_scanstamp, scanstamp, AV_SCANSTAMP_SZ);
173 } else if (XVA_ISSET_REQ(xvap, XAT_PROJID)) {
174 /*
175 * XAT_PROJID and XAT_AV_SCANSTAMP will never be valid
176 * at the same time, so we can share the same space.
177 */
178 bcopy(&xoap->xoa_projid, scanstamp, sizeof (uint64_t));
179 }
180 if (XVA_ISSET_REQ(xvap, XAT_REPARSE))
181 *attrs |= (xoap->xoa_reparse == 0) ? 0 :
182 XAT0_REPARSE;
183 if (XVA_ISSET_REQ(xvap, XAT_OFFLINE))
184 *attrs |= (xoap->xoa_offline == 0) ? 0 :
185 XAT0_OFFLINE;
186 if (XVA_ISSET_REQ(xvap, XAT_SPARSE))
187 *attrs |= (xoap->xoa_sparse == 0) ? 0 :
188 XAT0_SPARSE;
189 if (XVA_ISSET_REQ(xvap, XAT_PROJINHERIT))
190 *attrs |= (xoap->xoa_projinherit == 0) ? 0 :
191 XAT0_PROJINHERIT;
192 }
193
194 static void *
zfs_log_fuid_ids(zfs_fuid_info_t * fuidp,void * start)195 zfs_log_fuid_ids(zfs_fuid_info_t *fuidp, void *start)
196 {
197 zfs_fuid_t *zfuid;
198 uint64_t *fuidloc = start;
199
200 /* First copy in the ACE FUIDs */
201 for (zfuid = list_head(&fuidp->z_fuids); zfuid;
202 zfuid = list_next(&fuidp->z_fuids, zfuid)) {
203 *fuidloc++ = zfuid->z_logfuid;
204 }
205 return (fuidloc);
206 }
207
208
209 static void *
zfs_log_fuid_domains(zfs_fuid_info_t * fuidp,void * start)210 zfs_log_fuid_domains(zfs_fuid_info_t *fuidp, void *start)
211 {
212 zfs_fuid_domain_t *zdomain;
213
214 /* now copy in the domain info, if any */
215 if (fuidp->z_domain_str_sz != 0) {
216 for (zdomain = list_head(&fuidp->z_domains); zdomain;
217 zdomain = list_next(&fuidp->z_domains, zdomain)) {
218 bcopy((void *)zdomain->z_domain, start,
219 strlen(zdomain->z_domain) + 1);
220 start = (caddr_t)start +
221 strlen(zdomain->z_domain) + 1;
222 }
223 }
224 return (start);
225 }
226
227 /*
228 * Handles TX_CREATE, TX_CREATE_ATTR, TX_MKDIR, TX_MKDIR_ATTR and
229 * TK_MKXATTR transactions.
230 *
231 * TX_CREATE and TX_MKDIR are standard creates, but they may have FUID
232 * domain information appended prior to the name. In this case the
233 * uid/gid in the log record will be a log centric FUID.
234 *
235 * TX_CREATE_ACL_ATTR and TX_MKDIR_ACL_ATTR handle special creates that
236 * may contain attributes, ACL and optional fuid information.
237 *
238 * TX_CREATE_ACL and TX_MKDIR_ACL handle special creates that specify
239 * and ACL and normal users/groups in the ACEs.
240 *
241 * There may be an optional xvattr attribute information similar
242 * to zfs_log_setattr.
243 *
244 * Also, after the file name "domain" strings may be appended.
245 */
246 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)247 zfs_log_create(zilog_t *zilog, dmu_tx_t *tx, uint64_t txtype,
248 znode_t *dzp, znode_t *zp, char *name, vsecattr_t *vsecp,
249 zfs_fuid_info_t *fuidp, vattr_t *vap)
250 {
251 itx_t *itx;
252 lr_create_t *lr;
253 lr_acl_create_t *lracl;
254 size_t aclsize = (vsecp != NULL) ? vsecp->vsa_aclentsz : 0;
255 size_t xvatsize = 0;
256 size_t txsize;
257 xvattr_t *xvap = (xvattr_t *)vap;
258 void *end;
259 size_t lrsize;
260 size_t namesize = strlen(name) + 1;
261 size_t fuidsz = 0;
262
263 if (zil_replaying(zilog, tx))
264 return;
265
266 /*
267 * If we have FUIDs present then add in space for
268 * domains and ACE fuid's if any.
269 */
270 if (fuidp) {
271 fuidsz += fuidp->z_domain_str_sz;
272 fuidsz += fuidp->z_fuid_cnt * sizeof (uint64_t);
273 }
274
275 if (vap->va_mask & AT_XVATTR)
276 xvatsize = ZIL_XVAT_SIZE(xvap->xva_mapsize);
277
278 if ((int)txtype == TX_CREATE_ATTR || (int)txtype == TX_MKDIR_ATTR ||
279 (int)txtype == TX_CREATE || (int)txtype == TX_MKDIR ||
280 (int)txtype == TX_MKXATTR) {
281 txsize = sizeof (*lr) + namesize + fuidsz + xvatsize;
282 lrsize = sizeof (*lr);
283 } else {
284 txsize =
285 sizeof (lr_acl_create_t) + namesize + fuidsz +
286 ZIL_ACE_LENGTH(aclsize) + xvatsize;
287 lrsize = sizeof (lr_acl_create_t);
288 }
289
290 itx = zil_itx_create(txtype, txsize);
291
292 lr = (lr_create_t *)&itx->itx_lr;
293 lr->lr_doid = dzp->z_id;
294 lr->lr_foid = zp->z_id;
295 /* Store dnode slot count in 8 bits above object id. */
296 LR_FOID_SET_SLOTS(lr->lr_foid, zp->z_dnodesize >> DNODE_SHIFT);
297 lr->lr_mode = zp->z_mode;
298 if (!IS_EPHEMERAL(zp->z_uid)) {
299 lr->lr_uid = (uint64_t)zp->z_uid;
300 } else {
301 lr->lr_uid = fuidp->z_fuid_owner;
302 }
303 if (!IS_EPHEMERAL(zp->z_gid)) {
304 lr->lr_gid = (uint64_t)zp->z_gid;
305 } else {
306 lr->lr_gid = fuidp->z_fuid_group;
307 }
308 (void) sa_lookup(zp->z_sa_hdl, SA_ZPL_GEN(zp->z_zfsvfs), &lr->lr_gen,
309 sizeof (uint64_t));
310 (void) sa_lookup(zp->z_sa_hdl, SA_ZPL_CRTIME(zp->z_zfsvfs),
311 lr->lr_crtime, sizeof (uint64_t) * 2);
312
313 if (sa_lookup(zp->z_sa_hdl, SA_ZPL_RDEV(zp->z_zfsvfs), &lr->lr_rdev,
314 sizeof (lr->lr_rdev)) != 0)
315 lr->lr_rdev = 0;
316
317 /*
318 * Fill in xvattr info if any
319 */
320 if (vap->va_mask & AT_XVATTR) {
321 zfs_log_xvattr((lr_attr_t *)((caddr_t)lr + lrsize), xvap);
322 end = (caddr_t)lr + lrsize + xvatsize;
323 } else {
324 end = (caddr_t)lr + lrsize;
325 }
326
327 /* Now fill in any ACL info */
328
329 if (vsecp) {
330 lracl = (lr_acl_create_t *)&itx->itx_lr;
331 lracl->lr_aclcnt = vsecp->vsa_aclcnt;
332 lracl->lr_acl_bytes = aclsize;
333 lracl->lr_domcnt = fuidp ? fuidp->z_domain_cnt : 0;
334 lracl->lr_fuidcnt = fuidp ? fuidp->z_fuid_cnt : 0;
335 if (vsecp->vsa_aclflags & VSA_ACE_ACLFLAGS)
336 lracl->lr_acl_flags = (uint64_t)vsecp->vsa_aclflags;
337 else
338 lracl->lr_acl_flags = 0;
339
340 bcopy(vsecp->vsa_aclentp, end, aclsize);
341 end = (caddr_t)end + ZIL_ACE_LENGTH(aclsize);
342 }
343
344 /* drop in FUID info */
345 if (fuidp) {
346 end = zfs_log_fuid_ids(fuidp, end);
347 end = zfs_log_fuid_domains(fuidp, end);
348 }
349 /*
350 * Now place file name in log record
351 */
352 bcopy(name, end, namesize);
353
354 zil_itx_assign(zilog, itx, tx);
355 }
356
357 void zil_remove_async(zilog_t *zilog, uint64_t oid);
358
359 /*
360 * Handles both TX_REMOVE and TX_RMDIR transactions.
361 */
362 void
zfs_log_remove(zilog_t * zilog,dmu_tx_t * tx,uint64_t txtype,znode_t * dzp,char * name,uint64_t foid,boolean_t unlinked)363 zfs_log_remove(zilog_t *zilog, dmu_tx_t *tx, uint64_t txtype,
364 znode_t *dzp, char *name, uint64_t foid, boolean_t unlinked)
365 {
366 itx_t *itx;
367 lr_remove_t *lr;
368 size_t namesize = strlen(name) + 1;
369
370 if (zil_replaying(zilog, tx))
371 return;
372
373 itx = zil_itx_create(txtype, sizeof (*lr) + namesize);
374 lr = (lr_remove_t *)&itx->itx_lr;
375 lr->lr_doid = dzp->z_id;
376 bcopy(name, (char *)(lr + 1), namesize);
377
378 itx->itx_oid = foid;
379
380 /*
381 * Object ids can be re-instantiated in the next txg so
382 * remove any async transactions to avoid future leaks.
383 * This can happen if a fsync occurs on the re-instantiated
384 * object for a WR_INDIRECT or WR_NEED_COPY write, which gets
385 * the new file data and flushes a write record for the old object.
386 */
387 if (unlinked) {
388 ASSERT((txtype & ~TX_CI) == TX_REMOVE);
389 zil_remove_async(zilog, foid);
390 }
391 zil_itx_assign(zilog, itx, tx);
392 }
393
394 /*
395 * Handles TX_LINK transactions.
396 */
397 void
zfs_log_link(zilog_t * zilog,dmu_tx_t * tx,uint64_t txtype,znode_t * dzp,znode_t * zp,char * name)398 zfs_log_link(zilog_t *zilog, dmu_tx_t *tx, uint64_t txtype,
399 znode_t *dzp, znode_t *zp, char *name)
400 {
401 itx_t *itx;
402 lr_link_t *lr;
403 size_t namesize = strlen(name) + 1;
404
405 if (zil_replaying(zilog, tx))
406 return;
407
408 itx = zil_itx_create(txtype, sizeof (*lr) + namesize);
409 lr = (lr_link_t *)&itx->itx_lr;
410 lr->lr_doid = dzp->z_id;
411 lr->lr_link_obj = zp->z_id;
412 bcopy(name, (char *)(lr + 1), namesize);
413
414 zil_itx_assign(zilog, itx, tx);
415 }
416
417 /*
418 * Handles TX_SYMLINK transactions.
419 */
420 void
zfs_log_symlink(zilog_t * zilog,dmu_tx_t * tx,uint64_t txtype,znode_t * dzp,znode_t * zp,char * name,char * link)421 zfs_log_symlink(zilog_t *zilog, dmu_tx_t *tx, uint64_t txtype,
422 znode_t *dzp, znode_t *zp, char *name, char *link)
423 {
424 itx_t *itx;
425 lr_create_t *lr;
426 size_t namesize = strlen(name) + 1;
427 size_t linksize = strlen(link) + 1;
428
429 if (zil_replaying(zilog, tx))
430 return;
431
432 itx = zil_itx_create(txtype, sizeof (*lr) + namesize + linksize);
433 lr = (lr_create_t *)&itx->itx_lr;
434 lr->lr_doid = dzp->z_id;
435 lr->lr_foid = zp->z_id;
436 lr->lr_uid = zp->z_uid;
437 lr->lr_gid = zp->z_gid;
438 lr->lr_mode = zp->z_mode;
439 (void) sa_lookup(zp->z_sa_hdl, SA_ZPL_GEN(zp->z_zfsvfs), &lr->lr_gen,
440 sizeof (uint64_t));
441 (void) sa_lookup(zp->z_sa_hdl, SA_ZPL_CRTIME(zp->z_zfsvfs),
442 lr->lr_crtime, sizeof (uint64_t) * 2);
443 bcopy(name, (char *)(lr + 1), namesize);
444 bcopy(link, (char *)(lr + 1) + namesize, linksize);
445
446 zil_itx_assign(zilog, itx, tx);
447 }
448
449 /*
450 * Handles TX_RENAME transactions.
451 */
452 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)453 zfs_log_rename(zilog_t *zilog, dmu_tx_t *tx, uint64_t txtype,
454 znode_t *sdzp, char *sname, znode_t *tdzp, char *dname, znode_t *szp)
455 {
456 itx_t *itx;
457 lr_rename_t *lr;
458 size_t snamesize = strlen(sname) + 1;
459 size_t dnamesize = strlen(dname) + 1;
460
461 if (zil_replaying(zilog, tx))
462 return;
463
464 itx = zil_itx_create(txtype, sizeof (*lr) + snamesize + dnamesize);
465 lr = (lr_rename_t *)&itx->itx_lr;
466 lr->lr_sdoid = sdzp->z_id;
467 lr->lr_tdoid = tdzp->z_id;
468 bcopy(sname, (char *)(lr + 1), snamesize);
469 bcopy(dname, (char *)(lr + 1) + snamesize, dnamesize);
470 itx->itx_oid = szp->z_id;
471
472 zil_itx_assign(zilog, itx, tx);
473 }
474
475 /*
476 * Handles TX_WRITE transactions.
477 */
478 ssize_t zfs_immediate_write_sz = 32768;
479
480 void
zfs_log_write(zilog_t * zilog,dmu_tx_t * tx,int txtype,znode_t * zp,offset_t off,ssize_t resid,int ioflag)481 zfs_log_write(zilog_t *zilog, dmu_tx_t *tx, int txtype,
482 znode_t *zp, offset_t off, ssize_t resid, int ioflag)
483 {
484 uint32_t blocksize = zp->z_blksz;
485 itx_wr_state_t write_state;
486 uintptr_t fsync_cnt;
487
488 if (zil_replaying(zilog, tx) || zp->z_unlinked)
489 return;
490
491 if (zilog->zl_logbias == ZFS_LOGBIAS_THROUGHPUT)
492 write_state = WR_INDIRECT;
493 else if (!spa_has_slogs(zilog->zl_spa) &&
494 resid >= zfs_immediate_write_sz)
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 itx_wr_state_t wr_state = write_state;
509 ssize_t len = resid;
510
511 if (wr_state == WR_COPIED && resid > ZIL_MAX_COPIED_DATA)
512 wr_state = WR_NEED_COPY;
513 else if (wr_state == WR_INDIRECT)
514 len = MIN(blocksize - P2PHASE(off, blocksize), resid);
515
516 itx = zil_itx_create(txtype, sizeof (*lr) +
517 (wr_state == WR_COPIED ? len : 0));
518 lr = (lr_write_t *)&itx->itx_lr;
519 if (wr_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 wr_state = WR_NEED_COPY;
525 }
526
527 itx->itx_wr_state = wr_state;
528 lr->lr_foid = zp->z_id;
529 lr->lr_offset = off;
530 lr->lr_length = len;
531 lr->lr_blkoff = 0;
532 BP_ZERO(&lr->lr_blkptr);
533
534 itx->itx_private = zp->z_zfsvfs;
535
536 if (!(ioflag & (FSYNC | FDSYNC)) && (zp->z_sync_cnt == 0) &&
537 (fsync_cnt == 0))
538 itx->itx_sync = B_FALSE;
539
540 zil_itx_assign(zilog, itx, tx);
541
542 off += len;
543 resid -= len;
544 }
545 }
546
547 /*
548 * Handles TX_TRUNCATE transactions.
549 */
550 void
zfs_log_truncate(zilog_t * zilog,dmu_tx_t * tx,int txtype,znode_t * zp,uint64_t off,uint64_t len)551 zfs_log_truncate(zilog_t *zilog, dmu_tx_t *tx, int txtype,
552 znode_t *zp, uint64_t off, uint64_t len)
553 {
554 itx_t *itx;
555 lr_truncate_t *lr;
556
557 if (zil_replaying(zilog, tx) || zp->z_unlinked)
558 return;
559
560 itx = zil_itx_create(txtype, sizeof (*lr));
561 lr = (lr_truncate_t *)&itx->itx_lr;
562 lr->lr_foid = zp->z_id;
563 lr->lr_offset = off;
564 lr->lr_length = len;
565
566 itx->itx_sync = (zp->z_sync_cnt != 0);
567 zil_itx_assign(zilog, itx, tx);
568 }
569
570 /*
571 * Handles TX_SETATTR transactions.
572 */
573 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)574 zfs_log_setattr(zilog_t *zilog, dmu_tx_t *tx, int txtype,
575 znode_t *zp, vattr_t *vap, uint_t mask_applied, zfs_fuid_info_t *fuidp)
576 {
577 itx_t *itx;
578 lr_setattr_t *lr;
579 xvattr_t *xvap = (xvattr_t *)vap;
580 size_t recsize = sizeof (lr_setattr_t);
581 void *start;
582
583 if (zil_replaying(zilog, tx) || zp->z_unlinked)
584 return;
585
586 /*
587 * If XVATTR set, then log record size needs to allow
588 * for lr_attr_t + xvattr mask, mapsize and create time
589 * plus actual attribute values
590 */
591 if (vap->va_mask & AT_XVATTR)
592 recsize = sizeof (*lr) + ZIL_XVAT_SIZE(xvap->xva_mapsize);
593
594 if (fuidp)
595 recsize += fuidp->z_domain_str_sz;
596
597 itx = zil_itx_create(txtype, recsize);
598 lr = (lr_setattr_t *)&itx->itx_lr;
599 lr->lr_foid = zp->z_id;
600 lr->lr_mask = (uint64_t)mask_applied;
601 lr->lr_mode = (uint64_t)vap->va_mode;
602 if ((mask_applied & AT_UID) && IS_EPHEMERAL(vap->va_uid))
603 lr->lr_uid = fuidp->z_fuid_owner;
604 else
605 lr->lr_uid = (uint64_t)vap->va_uid;
606
607 if ((mask_applied & AT_GID) && IS_EPHEMERAL(vap->va_gid))
608 lr->lr_gid = fuidp->z_fuid_group;
609 else
610 lr->lr_gid = (uint64_t)vap->va_gid;
611
612 lr->lr_size = (uint64_t)vap->va_size;
613 ZFS_TIME_ENCODE(&vap->va_atime, lr->lr_atime);
614 ZFS_TIME_ENCODE(&vap->va_mtime, lr->lr_mtime);
615 start = (lr_setattr_t *)(lr + 1);
616 if (vap->va_mask & AT_XVATTR) {
617 zfs_log_xvattr((lr_attr_t *)start, xvap);
618 start = (caddr_t)start + ZIL_XVAT_SIZE(xvap->xva_mapsize);
619 }
620
621 /*
622 * Now stick on domain information if any on end
623 */
624
625 if (fuidp)
626 (void) zfs_log_fuid_domains(fuidp, start);
627
628 itx->itx_sync = (zp->z_sync_cnt != 0);
629 zil_itx_assign(zilog, itx, tx);
630 }
631
632 /*
633 * Handles TX_ACL transactions.
634 */
635 void
zfs_log_acl(zilog_t * zilog,dmu_tx_t * tx,znode_t * zp,vsecattr_t * vsecp,zfs_fuid_info_t * fuidp)636 zfs_log_acl(zilog_t *zilog, dmu_tx_t *tx, znode_t *zp,
637 vsecattr_t *vsecp, zfs_fuid_info_t *fuidp)
638 {
639 itx_t *itx;
640 lr_acl_v0_t *lrv0;
641 lr_acl_t *lr;
642 int txtype;
643 int lrsize;
644 size_t txsize;
645 size_t aclbytes = vsecp->vsa_aclentsz;
646
647 if (zil_replaying(zilog, tx) || zp->z_unlinked)
648 return;
649
650 txtype = (zp->z_zfsvfs->z_version < ZPL_VERSION_FUID) ?
651 TX_ACL_V0 : TX_ACL;
652
653 if (txtype == TX_ACL)
654 lrsize = sizeof (*lr);
655 else
656 lrsize = sizeof (*lrv0);
657
658 txsize = lrsize +
659 ((txtype == TX_ACL) ? ZIL_ACE_LENGTH(aclbytes) : aclbytes) +
660 (fuidp ? fuidp->z_domain_str_sz : 0) +
661 sizeof (uint64_t) * (fuidp ? fuidp->z_fuid_cnt : 0);
662
663 itx = zil_itx_create(txtype, txsize);
664
665 lr = (lr_acl_t *)&itx->itx_lr;
666 lr->lr_foid = zp->z_id;
667 if (txtype == TX_ACL) {
668 lr->lr_acl_bytes = aclbytes;
669 lr->lr_domcnt = fuidp ? fuidp->z_domain_cnt : 0;
670 lr->lr_fuidcnt = fuidp ? fuidp->z_fuid_cnt : 0;
671 if (vsecp->vsa_mask & VSA_ACE_ACLFLAGS)
672 lr->lr_acl_flags = (uint64_t)vsecp->vsa_aclflags;
673 else
674 lr->lr_acl_flags = 0;
675 }
676 lr->lr_aclcnt = (uint64_t)vsecp->vsa_aclcnt;
677
678 if (txtype == TX_ACL_V0) {
679 lrv0 = (lr_acl_v0_t *)lr;
680 bcopy(vsecp->vsa_aclentp, (ace_t *)(lrv0 + 1), aclbytes);
681 } else {
682 void *start = (ace_t *)(lr + 1);
683
684 bcopy(vsecp->vsa_aclentp, start, aclbytes);
685
686 start = (caddr_t)start + ZIL_ACE_LENGTH(aclbytes);
687
688 if (fuidp) {
689 start = zfs_log_fuid_ids(fuidp, start);
690 (void) zfs_log_fuid_domains(fuidp, start);
691 }
692 }
693
694 itx->itx_sync = (zp->z_sync_cnt != 0);
695 zil_itx_assign(zilog, itx, tx);
696 }
697