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, name, txtype); 346 rw_exit(&rz_zev_rwlock); 347 } 348 349 /* 350 * Handles both TX_REMOVE and TX_RMDIR transactions. 351 */ 352 void 353 zfs_log_remove(zilog_t *zilog, dmu_tx_t *tx, uint64_t txtype, 354 znode_t *dzp, char *name, uint64_t foid) 355 { 356 itx_t *itx; 357 lr_remove_t *lr; 358 size_t namesize = strlen(name) + 1; 359 360 if (zil_replaying(zilog, tx)) 361 return; 362 363 itx = zil_itx_create(txtype, sizeof (*lr) + namesize); 364 lr = (lr_remove_t *)&itx->itx_lr; 365 lr->lr_doid = dzp->z_id; 366 bcopy(name, (char *)(lr + 1), namesize); 367 368 itx->itx_oid = foid; 369 370 zil_itx_assign(zilog, itx, tx); 371 372 rw_enter(&rz_zev_rwlock, RW_READER); 373 if (rz_zev_callbacks && rz_zev_callbacks->rz_zev_znode_remove) 374 rz_zev_callbacks->rz_zev_znode_remove(dzp, name, txtype); 375 rw_exit(&rz_zev_rwlock); 376 } 377 378 /* 379 * Handles TX_LINK transactions. 380 */ 381 void 382 zfs_log_link(zilog_t *zilog, dmu_tx_t *tx, uint64_t txtype, 383 znode_t *dzp, znode_t *zp, char *name) 384 { 385 itx_t *itx; 386 lr_link_t *lr; 387 size_t namesize = strlen(name) + 1; 388 389 if (zil_replaying(zilog, tx)) 390 return; 391 392 itx = zil_itx_create(txtype, sizeof (*lr) + namesize); 393 lr = (lr_link_t *)&itx->itx_lr; 394 lr->lr_doid = dzp->z_id; 395 lr->lr_link_obj = zp->z_id; 396 bcopy(name, (char *)(lr + 1), namesize); 397 398 zil_itx_assign(zilog, itx, tx); 399 400 rw_enter(&rz_zev_rwlock, RW_READER); 401 if (rz_zev_callbacks && rz_zev_callbacks->rz_zev_znode_link) 402 rz_zev_callbacks->rz_zev_znode_link(dzp, zp, name); 403 rw_exit(&rz_zev_rwlock); 404 } 405 406 /* 407 * Handles TX_SYMLINK transactions. 408 */ 409 void 410 zfs_log_symlink(zilog_t *zilog, dmu_tx_t *tx, uint64_t txtype, 411 znode_t *dzp, znode_t *zp, char *name, char *link) 412 { 413 itx_t *itx; 414 lr_create_t *lr; 415 size_t namesize = strlen(name) + 1; 416 size_t linksize = strlen(link) + 1; 417 418 if (zil_replaying(zilog, tx)) 419 return; 420 421 itx = zil_itx_create(txtype, sizeof (*lr) + namesize + linksize); 422 lr = (lr_create_t *)&itx->itx_lr; 423 lr->lr_doid = dzp->z_id; 424 lr->lr_foid = zp->z_id; 425 lr->lr_uid = zp->z_uid; 426 lr->lr_gid = zp->z_gid; 427 lr->lr_mode = zp->z_mode; 428 (void) sa_lookup(zp->z_sa_hdl, SA_ZPL_GEN(zp->z_zfsvfs), &lr->lr_gen, 429 sizeof (uint64_t)); 430 (void) sa_lookup(zp->z_sa_hdl, SA_ZPL_CRTIME(zp->z_zfsvfs), 431 lr->lr_crtime, sizeof (uint64_t) * 2); 432 bcopy(name, (char *)(lr + 1), namesize); 433 bcopy(link, (char *)(lr + 1) + namesize, linksize); 434 435 zil_itx_assign(zilog, itx, tx); 436 437 rw_enter(&rz_zev_rwlock, RW_READER); 438 if (rz_zev_callbacks && rz_zev_callbacks->rz_zev_znode_symlink) 439 rz_zev_callbacks->rz_zev_znode_symlink(dzp, zp, name, link); 440 rw_exit(&rz_zev_rwlock); 441 } 442 443 /* 444 * Handles TX_RENAME transactions. 445 */ 446 void 447 zfs_log_rename(zilog_t *zilog, dmu_tx_t *tx, uint64_t txtype, 448 znode_t *sdzp, char *sname, znode_t *tdzp, char *dname, znode_t *szp) 449 { 450 itx_t *itx; 451 lr_rename_t *lr; 452 size_t snamesize = strlen(sname) + 1; 453 size_t dnamesize = strlen(dname) + 1; 454 455 if (zil_replaying(zilog, tx)) 456 return; 457 458 itx = zil_itx_create(txtype, sizeof (*lr) + snamesize + dnamesize); 459 lr = (lr_rename_t *)&itx->itx_lr; 460 lr->lr_sdoid = sdzp->z_id; 461 lr->lr_tdoid = tdzp->z_id; 462 bcopy(sname, (char *)(lr + 1), snamesize); 463 bcopy(dname, (char *)(lr + 1) + snamesize, dnamesize); 464 itx->itx_oid = szp->z_id; 465 466 zil_itx_assign(zilog, itx, tx); 467 468 rw_enter(&rz_zev_rwlock, RW_READER); 469 if (rz_zev_callbacks && rz_zev_callbacks->rz_zev_znode_rename) 470 rz_zev_callbacks->rz_zev_znode_rename(sdzp, 471 sname, tdzp, dname, szp); 472 rw_exit(&rz_zev_rwlock); 473 } 474 475 /* 476 * Handles TX_WRITE transactions. 477 */ 478 ssize_t zfs_immediate_write_sz = 32768; 479 480 void 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 itx_wr_state_t write_state; 485 boolean_t slogging; 486 uintptr_t fsync_cnt; 487 ssize_t immediate_write_sz; 488 489 if (zil_replaying(zilog, tx) || zp->z_unlinked) 490 return; 491 492 immediate_write_sz = (zilog->zl_logbias == ZFS_LOGBIAS_THROUGHPUT) 493 ? 0 : zfs_immediate_write_sz; 494 495 slogging = spa_has_slogs(zilog->zl_spa) && 496 (zilog->zl_logbias == ZFS_LOGBIAS_LATENCY); 497 if (resid > immediate_write_sz && !slogging && resid <= zp->z_blksz) 498 write_state = WR_INDIRECT; 499 else if (ioflag & (FSYNC | FDSYNC)) 500 write_state = WR_COPIED; 501 else 502 write_state = WR_NEED_COPY; 503 504 if ((fsync_cnt = (uintptr_t)tsd_get(zfs_fsyncer_key)) != 0) { 505 (void) tsd_set(zfs_fsyncer_key, (void *)(fsync_cnt - 1)); 506 } 507 508 while (resid) { 509 itx_t *itx; 510 lr_write_t *lr; 511 ssize_t len; 512 513 /* 514 * If the write would overflow the largest block then split it. 515 */ 516 if (write_state != WR_INDIRECT && resid > ZIL_MAX_LOG_DATA) 517 len = SPA_OLD_MAXBLOCKSIZE >> 1; 518 else 519 len = resid; 520 521 itx = zil_itx_create(txtype, sizeof (*lr) + 522 (write_state == WR_COPIED ? len : 0)); 523 lr = (lr_write_t *)&itx->itx_lr; 524 if (write_state == WR_COPIED && dmu_read(zp->z_zfsvfs->z_os, 525 zp->z_id, off, len, lr + 1, DMU_READ_NO_PREFETCH) != 0) { 526 zil_itx_destroy(itx); 527 itx = zil_itx_create(txtype, sizeof (*lr)); 528 lr = (lr_write_t *)&itx->itx_lr; 529 write_state = WR_NEED_COPY; 530 } 531 532 itx->itx_wr_state = write_state; 533 if (write_state == WR_NEED_COPY) 534 itx->itx_sod += len; 535 lr->lr_foid = zp->z_id; 536 lr->lr_offset = off; 537 lr->lr_length = len; 538 lr->lr_blkoff = 0; 539 BP_ZERO(&lr->lr_blkptr); 540 541 itx->itx_private = zp->z_zfsvfs; 542 543 if (!(ioflag & (FSYNC | FDSYNC)) && (zp->z_sync_cnt == 0) && 544 (fsync_cnt == 0)) 545 itx->itx_sync = B_FALSE; 546 547 zil_itx_assign(zilog, itx, tx); 548 549 if (ZTOV(zp)->v_type == VREG) 550 atomic_add_32(&(zp->z_new_content), 1); 551 rw_enter(&rz_zev_rwlock, RW_READER); 552 if (rz_zev_callbacks && rz_zev_callbacks->rz_zev_znode_write) 553 rz_zev_callbacks->rz_zev_znode_write(zp, off, len); 554 rw_exit(&rz_zev_rwlock); 555 556 off += len; 557 resid -= len; 558 } 559 } 560 561 /* 562 * Handles TX_TRUNCATE transactions. 563 */ 564 void 565 zfs_log_truncate(zilog_t *zilog, dmu_tx_t *tx, int txtype, 566 znode_t *zp, uint64_t off, uint64_t len) 567 { 568 itx_t *itx; 569 lr_truncate_t *lr; 570 571 if (zil_replaying(zilog, tx) || zp->z_unlinked) 572 return; 573 574 itx = zil_itx_create(txtype, sizeof (*lr)); 575 lr = (lr_truncate_t *)&itx->itx_lr; 576 lr->lr_foid = zp->z_id; 577 lr->lr_offset = off; 578 lr->lr_length = len; 579 580 itx->itx_sync = (zp->z_sync_cnt != 0); 581 zil_itx_assign(zilog, itx, tx); 582 583 if (ZTOV(zp)->v_type == VREG) 584 atomic_add_32(&(zp->z_new_content), 1); 585 rw_enter(&rz_zev_rwlock, RW_READER); 586 if (rz_zev_callbacks && rz_zev_callbacks->rz_zev_znode_truncate) 587 rz_zev_callbacks->rz_zev_znode_truncate(zp, off, len); 588 rw_exit(&rz_zev_rwlock); 589 } 590 591 /* 592 * Handles TX_SETATTR transactions. 593 */ 594 void 595 zfs_log_setattr(zilog_t *zilog, dmu_tx_t *tx, int txtype, 596 znode_t *zp, vattr_t *vap, uint_t mask_applied, zfs_fuid_info_t *fuidp) 597 { 598 itx_t *itx; 599 lr_setattr_t *lr; 600 xvattr_t *xvap = (xvattr_t *)vap; 601 size_t recsize = sizeof (lr_setattr_t); 602 void *start; 603 604 if (zil_replaying(zilog, tx) || zp->z_unlinked) 605 return; 606 607 /* 608 * If XVATTR set, then log record size needs to allow 609 * for lr_attr_t + xvattr mask, mapsize and create time 610 * plus actual attribute values 611 */ 612 if (vap->va_mask & AT_XVATTR) 613 recsize = sizeof (*lr) + ZIL_XVAT_SIZE(xvap->xva_mapsize); 614 615 if (fuidp) 616 recsize += fuidp->z_domain_str_sz; 617 618 itx = zil_itx_create(txtype, recsize); 619 lr = (lr_setattr_t *)&itx->itx_lr; 620 lr->lr_foid = zp->z_id; 621 lr->lr_mask = (uint64_t)mask_applied; 622 lr->lr_mode = (uint64_t)vap->va_mode; 623 if ((mask_applied & AT_UID) && IS_EPHEMERAL(vap->va_uid)) 624 lr->lr_uid = fuidp->z_fuid_owner; 625 else 626 lr->lr_uid = (uint64_t)vap->va_uid; 627 628 if ((mask_applied & AT_GID) && IS_EPHEMERAL(vap->va_gid)) 629 lr->lr_gid = fuidp->z_fuid_group; 630 else 631 lr->lr_gid = (uint64_t)vap->va_gid; 632 633 lr->lr_size = (uint64_t)vap->va_size; 634 ZFS_TIME_ENCODE(&vap->va_atime, lr->lr_atime); 635 ZFS_TIME_ENCODE(&vap->va_mtime, lr->lr_mtime); 636 start = (lr_setattr_t *)(lr + 1); 637 if (vap->va_mask & AT_XVATTR) { 638 zfs_log_xvattr((lr_attr_t *)start, xvap); 639 start = (caddr_t)start + ZIL_XVAT_SIZE(xvap->xva_mapsize); 640 } 641 642 /* 643 * Now stick on domain information if any on end 644 */ 645 646 if (fuidp) 647 (void) zfs_log_fuid_domains(fuidp, start); 648 649 itx->itx_sync = (zp->z_sync_cnt != 0); 650 zil_itx_assign(zilog, itx, tx); 651 652 rw_enter(&rz_zev_rwlock, RW_READER); 653 if (rz_zev_callbacks && rz_zev_callbacks->rz_zev_znode_setattr) 654 rz_zev_callbacks->rz_zev_znode_setattr(zp); 655 rw_exit(&rz_zev_rwlock); 656 } 657 658 /* 659 * Handles TX_ACL transactions. 660 */ 661 void 662 zfs_log_acl(zilog_t *zilog, dmu_tx_t *tx, znode_t *zp, 663 vsecattr_t *vsecp, zfs_fuid_info_t *fuidp) 664 { 665 itx_t *itx; 666 lr_acl_v0_t *lrv0; 667 lr_acl_t *lr; 668 int txtype; 669 int lrsize; 670 size_t txsize; 671 size_t aclbytes = vsecp->vsa_aclentsz; 672 673 if (zil_replaying(zilog, tx) || zp->z_unlinked) 674 return; 675 676 txtype = (zp->z_zfsvfs->z_version < ZPL_VERSION_FUID) ? 677 TX_ACL_V0 : TX_ACL; 678 679 if (txtype == TX_ACL) 680 lrsize = sizeof (*lr); 681 else 682 lrsize = sizeof (*lrv0); 683 684 txsize = lrsize + 685 ((txtype == TX_ACL) ? ZIL_ACE_LENGTH(aclbytes) : aclbytes) + 686 (fuidp ? fuidp->z_domain_str_sz : 0) + 687 sizeof (uint64_t) * (fuidp ? fuidp->z_fuid_cnt : 0); 688 689 itx = zil_itx_create(txtype, txsize); 690 691 lr = (lr_acl_t *)&itx->itx_lr; 692 lr->lr_foid = zp->z_id; 693 if (txtype == TX_ACL) { 694 lr->lr_acl_bytes = aclbytes; 695 lr->lr_domcnt = fuidp ? fuidp->z_domain_cnt : 0; 696 lr->lr_fuidcnt = fuidp ? fuidp->z_fuid_cnt : 0; 697 if (vsecp->vsa_mask & VSA_ACE_ACLFLAGS) 698 lr->lr_acl_flags = (uint64_t)vsecp->vsa_aclflags; 699 else 700 lr->lr_acl_flags = 0; 701 } 702 lr->lr_aclcnt = (uint64_t)vsecp->vsa_aclcnt; 703 704 if (txtype == TX_ACL_V0) { 705 lrv0 = (lr_acl_v0_t *)lr; 706 bcopy(vsecp->vsa_aclentp, (ace_t *)(lrv0 + 1), aclbytes); 707 } else { 708 void *start = (ace_t *)(lr + 1); 709 710 bcopy(vsecp->vsa_aclentp, start, aclbytes); 711 712 start = (caddr_t)start + ZIL_ACE_LENGTH(aclbytes); 713 714 if (fuidp) { 715 start = zfs_log_fuid_ids(fuidp, start); 716 (void) zfs_log_fuid_domains(fuidp, start); 717 } 718 } 719 720 itx->itx_sync = (zp->z_sync_cnt != 0); 721 zil_itx_assign(zilog, itx, tx); 722 723 rw_enter(&rz_zev_rwlock, RW_READER); 724 if (rz_zev_callbacks && rz_zev_callbacks->rz_zev_znode_acl) 725 rz_zev_callbacks->rz_zev_znode_acl(zp); 726 rw_exit(&rz_zev_rwlock); 727 } 728