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 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 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 * 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 * 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 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 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 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 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 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 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 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 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 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