module/zfs/zfs_log.c

   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
  26 #include <sys/types.h>
  27 #include <sys/param.h>
  28 #include <sys/systm.h>
  29 #include <sys/sysmacros.h>
  30 #include <sys/cmn_err.h>
  31 #include <sys/kmem.h>
  32 #include <sys/thread.h>
  33 #include <sys/file.h>
  34 #include <sys/vfs.h>
  35 #include <sys/zfs_znode.h>
  36 #include <sys/zfs_dir.h>
  37 #include <sys/zil.h>
  38 #include <sys/zil_impl.h>
  39 #include <sys/byteorder.h>
  40 #include <sys/policy.h>
  41 #include <sys/stat.h>
  42 #include <sys/mode.h>
  43 #include <sys/acl.h>
  44 #include <sys/dmu.h>
  45 #include <sys/spa.h>
  46 #include <sys/zfs_fuid.h>
  47 #include <sys/ddi.h>
  48 #include <sys/dsl_dataset.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
  70 zfs_log_create_txtype(zil_create_t type, vsecattr_t *vsecp, vattr_t *vap)
  71 {
  72         int isxvattr = (vap->va_mask & ATTR_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
 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 *
 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 *
 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  * zfs_log_create() is used to handle TX_CREATE, TX_CREATE_ATTR, TX_MKDIR,
 216  * TX_MKDIR_ATTR and TX_MKXATTR
 217  * transactions.
 218  *
 219  * TX_CREATE and TX_MKDIR are standard creates, but they may have FUID
 220  * domain information appended prior to the name.  In this case the
 221  * uid/gid in the log record will be a log centric FUID.
 222  *
 223  * TX_CREATE_ACL_ATTR and TX_MKDIR_ACL_ATTR handle special creates that
 224  * may contain attributes, ACL and optional fuid information.
 225  *
 226  * TX_CREATE_ACL and TX_MKDIR_ACL handle special creates that specify
 227  * and ACL and normal users/groups in the ACEs.
 228  *
 229  * There may be an optional xvattr attribute information similar
 230  * to zfs_log_setattr.
 231  *
 232  * Also, after the file name "domain" strings may be appended.
 233  */
 234 void
 235 zfs_log_create(zilog_t *zilog, dmu_tx_t *tx, uint64_t txtype,
 236     znode_t *dzp, znode_t *zp, char *name, vsecattr_t *vsecp,
 237     zfs_fuid_info_t *fuidp, vattr_t *vap)
 238 {
 239         itx_t *itx;
 240         lr_create_t *lr;
 241         lr_acl_create_t *lracl;
 242         size_t aclsize = 0;
 243         size_t xvatsize = 0;
 244         size_t txsize;
 245         xvattr_t *xvap = (xvattr_t *)vap;
 246         void *end;
 247         size_t lrsize;
 248         size_t namesize = strlen(name) + 1;
 249         size_t fuidsz = 0;
 250
 251         if (zil_replaying(zilog, tx))
 252                 return;
 253
 254         /*
 255          * If we have FUIDs present then add in space for
 256          * domains and ACE fuid's if any.
 257          */
 258         if (fuidp) {
 259                 fuidsz += fuidp->z_domain_str_sz;
 260                 fuidsz += fuidp->z_fuid_cnt * sizeof (uint64_t);
 261         }
 262
 263         if (vap->va_mask & ATTR_XVATTR)
 264                 xvatsize = ZIL_XVAT_SIZE(xvap->xva_mapsize);
 265
 266         if ((int)txtype == TX_CREATE_ATTR || (int)txtype == TX_MKDIR_ATTR ||
 267             (int)txtype == TX_CREATE || (int)txtype == TX_MKDIR ||
 268             (int)txtype == TX_MKXATTR) {
 269                 txsize = sizeof (*lr) + namesize + fuidsz + xvatsize;
 270                 lrsize = sizeof (*lr);
 271         } else {
 272                 txsize =
 273                     sizeof (lr_acl_create_t) + namesize + fuidsz +
 274                     ZIL_ACE_LENGTH(aclsize) + xvatsize;
 275                 lrsize = sizeof (lr_acl_create_t);
 276         }
 277
 278         itx = zil_itx_create(txtype, txsize);
 279
 280         lr = (lr_create_t *)&itx->itx_lr;
 281         lr->lr_doid = dzp->z_id;
 282         lr->lr_foid = zp->z_id;
 283         lr->lr_mode = zp->z_mode;
 284         if (!IS_EPHEMERAL(zp->z_uid)) {
 285                 lr->lr_uid = (uint64_t)zp->z_uid;
 286         } else {
 287                 lr->lr_uid = fuidp->z_fuid_owner;
 288         }
 289         if (!IS_EPHEMERAL(zp->z_gid)) {
 290                 lr->lr_gid = (uint64_t)zp->z_gid;
 291         } else {
 292                 lr->lr_gid = fuidp->z_fuid_group;
 293         }
 294         (void) sa_lookup(zp->z_sa_hdl, SA_ZPL_GEN(ZTOZSB(zp)), &lr->lr_gen,
 295             sizeof (uint64_t));
 296         (void) sa_lookup(zp->z_sa_hdl, SA_ZPL_CRTIME(ZTOZSB(zp)),
 297             lr->lr_crtime, sizeof (uint64_t) * 2);
 298
 299         if (sa_lookup(zp->z_sa_hdl, SA_ZPL_RDEV(ZTOZSB(zp)), &lr->lr_rdev,
 300             sizeof (lr->lr_rdev)) != 0)
 301                 lr->lr_rdev = 0;
 302
 303         /*
 304          * Fill in xvattr info if any
 305          */
 306         if (vap->va_mask & ATTR_XVATTR) {
 307                 zfs_log_xvattr((lr_attr_t *)((caddr_t)lr + lrsize), xvap);
 308                 end = (caddr_t)lr + lrsize + xvatsize;
 309         } else {
 310                 end = (caddr_t)lr + lrsize;
 311         }
 312
 313         /* Now fill in any ACL info */
 314
 315         if (vsecp) {
 316                 lracl = (lr_acl_create_t *)&itx->itx_lr;
 317                 lracl->lr_aclcnt = vsecp->vsa_aclcnt;
 318                 lracl->lr_acl_bytes = aclsize;
 319                 lracl->lr_domcnt = fuidp ? fuidp->z_domain_cnt : 0;
 320                 lracl->lr_fuidcnt  = fuidp ? fuidp->z_fuid_cnt : 0;
 321                 if (vsecp->vsa_aclflags & VSA_ACE_ACLFLAGS)
 322                         lracl->lr_acl_flags = (uint64_t)vsecp->vsa_aclflags;
 323                 else
 324                         lracl->lr_acl_flags = 0;
 325
 326                 bcopy(vsecp->vsa_aclentp, end, aclsize);
 327                 end = (caddr_t)end + ZIL_ACE_LENGTH(aclsize);
 328         }
 329
 330         /* drop in FUID info */
 331         if (fuidp) {
 332                 end = zfs_log_fuid_ids(fuidp, end);
 333                 end = zfs_log_fuid_domains(fuidp, end);
 334         }
 335         /*
 336          * Now place file name in log record
 337          */
 338         bcopy(name, end, namesize);
 339
 340         zil_itx_assign(zilog, itx, tx);
 341 }
 342
 343 /*
 344  * zfs_log_remove() handles both TX_REMOVE and TX_RMDIR transactions.
 345  */
 346 void
 347 zfs_log_remove(zilog_t *zilog, dmu_tx_t *tx, uint64_t txtype,
 348         znode_t *dzp, char *name, uint64_t foid)
 349 {
 350         itx_t *itx;
 351         lr_remove_t *lr;
 352         size_t namesize = strlen(name) + 1;
 353
 354         if (zil_replaying(zilog, tx))
 355                 return;
 356
 357         itx = zil_itx_create(txtype, sizeof (*lr) + namesize);
 358         lr = (lr_remove_t *)&itx->itx_lr;
 359         lr->lr_doid = dzp->z_id;
 360         bcopy(name, (char *)(lr + 1), namesize);
 361
 362         itx->itx_oid = foid;
 363
 364         zil_itx_assign(zilog, itx, tx);
 365 }
 366
 367 /*
 368  * zfs_log_link() handles TX_LINK transactions.
 369  */
 370 void
 371 zfs_log_link(zilog_t *zilog, dmu_tx_t *tx, uint64_t txtype,
 372         znode_t *dzp, znode_t *zp, char *name)
 373 {
 374         itx_t *itx;
 375         lr_link_t *lr;
 376         size_t namesize = strlen(name) + 1;
 377
 378         if (zil_replaying(zilog, tx))
 379                 return;
 380
 381         itx = zil_itx_create(txtype, sizeof (*lr) + namesize);
 382         lr = (lr_link_t *)&itx->itx_lr;
 383         lr->lr_doid = dzp->z_id;
 384         lr->lr_link_obj = zp->z_id;
 385         bcopy(name, (char *)(lr + 1), namesize);
 386
 387         zil_itx_assign(zilog, itx, tx);
 388 }
 389
 390 /*
 391  * zfs_log_symlink() handles TX_SYMLINK transactions.
 392  */
 393 void
 394 zfs_log_symlink(zilog_t *zilog, dmu_tx_t *tx, uint64_t txtype,
 395     znode_t *dzp, znode_t *zp, char *name, char *link)
 396 {
 397         itx_t *itx;
 398         lr_create_t *lr;
 399         size_t namesize = strlen(name) + 1;
 400         size_t linksize = strlen(link) + 1;
 401
 402         if (zil_replaying(zilog, tx))
 403                 return;
 404
 405         itx = zil_itx_create(txtype, sizeof (*lr) + namesize + linksize);
 406         lr = (lr_create_t *)&itx->itx_lr;
 407         lr->lr_doid = dzp->z_id;
 408         lr->lr_foid = zp->z_id;
 409         lr->lr_uid = zp->z_uid;
 410         lr->lr_gid = zp->z_gid;
 411         lr->lr_mode = zp->z_mode;
 412         (void) sa_lookup(zp->z_sa_hdl, SA_ZPL_GEN(ZTOZSB(zp)), &lr->lr_gen,
 413             sizeof (uint64_t));
 414         (void) sa_lookup(zp->z_sa_hdl, SA_ZPL_CRTIME(ZTOZSB(zp)),
 415             lr->lr_crtime, sizeof (uint64_t) * 2);
 416         bcopy(name, (char *)(lr + 1), namesize);
 417         bcopy(link, (char *)(lr + 1) + namesize, linksize);
 418
 419         zil_itx_assign(zilog, itx, tx);
 420 }
 421
 422 /*
 423  * zfs_log_rename() handles TX_RENAME transactions.
 424  */
 425 void
 426 zfs_log_rename(zilog_t *zilog, dmu_tx_t *tx, uint64_t txtype,
 427         znode_t *sdzp, char *sname, znode_t *tdzp, char *dname, znode_t *szp)
 428 {
 429         itx_t *itx;
 430         lr_rename_t *lr;
 431         size_t snamesize = strlen(sname) + 1;
 432         size_t dnamesize = strlen(dname) + 1;
 433
 434         if (zil_replaying(zilog, tx))
 435                 return;
 436
 437         itx = zil_itx_create(txtype, sizeof (*lr) + snamesize + dnamesize);
 438         lr = (lr_rename_t *)&itx->itx_lr;
 439         lr->lr_sdoid = sdzp->z_id;
 440         lr->lr_tdoid = tdzp->z_id;
 441         bcopy(sname, (char *)(lr + 1), snamesize);
 442         bcopy(dname, (char *)(lr + 1) + snamesize, dnamesize);
 443         itx->itx_oid = szp->z_id;
 444
 445         zil_itx_assign(zilog, itx, tx);
 446 }
 447
 448 /*
 449  * zfs_log_write() handles TX_WRITE transactions.
 450  */
 451 long zfs_immediate_write_sz = 32768;
 452
 453 void
 454 zfs_log_write(zilog_t *zilog, dmu_tx_t *tx, int txtype,
 455         znode_t *zp, offset_t off, ssize_t resid, int ioflag)
 456 {
 457         itx_wr_state_t write_state;
 458         boolean_t slogging;
 459         uintptr_t fsync_cnt;
 460         ssize_t immediate_write_sz;
 461
 462         if (zil_replaying(zilog, tx) || zp->z_unlinked)
 463                 return;
 464
 465         immediate_write_sz = (zilog->zl_logbias == ZFS_LOGBIAS_THROUGHPUT)
 466             ? 0 : (ssize_t)zfs_immediate_write_sz;
 467
 468         slogging = spa_has_slogs(zilog->zl_spa) &&
 469             (zilog->zl_logbias == ZFS_LOGBIAS_LATENCY);
 470         if (resid > immediate_write_sz && !slogging && resid <= zp->z_blksz)
 471                 write_state = WR_INDIRECT;
 472         else if (ioflag & (FSYNC | FDSYNC))
 473                 write_state = WR_COPIED;
 474         else
 475                 write_state = WR_NEED_COPY;
 476
 477         if ((fsync_cnt = (uintptr_t)tsd_get(zfs_fsyncer_key)) != 0) {
 478                 (void) tsd_set(zfs_fsyncer_key, (void *)(fsync_cnt - 1));
 479         }
 480
 481         while (resid) {
 482                 itx_t *itx;
 483                 lr_write_t *lr;
 484                 ssize_t len;
 485
 486                 /*
 487                  * If the write would overflow the largest block then split it.
 488                  */
 489                 if (write_state != WR_INDIRECT && resid > ZIL_MAX_LOG_DATA)
 490                         len = SPA_MAXBLOCKSIZE >> 1;
 491                 else
 492                         len = resid;
 493
 494                 itx = zil_itx_create(txtype, sizeof (*lr) +
 495                     (write_state == WR_COPIED ? len : 0));
 496                 lr = (lr_write_t *)&itx->itx_lr;
 497                 if (write_state == WR_COPIED && dmu_read(ZTOZSB(zp)->z_os,
 498                     zp->z_id, off, len, lr + 1, DMU_READ_NO_PREFETCH) != 0) {
 499                         zil_itx_destroy(itx);
 500                         itx = zil_itx_create(txtype, sizeof (*lr));
 501                         lr = (lr_write_t *)&itx->itx_lr;
 502                         write_state = WR_NEED_COPY;
 503                 }
 504
 505                 itx->itx_wr_state = write_state;
 506                 if (write_state == WR_NEED_COPY)
 507                         itx->itx_sod += len;
 508                 lr->lr_foid = zp->z_id;
 509                 lr->lr_offset = off;
 510                 lr->lr_length = len;
 511                 lr->lr_blkoff = 0;
 512                 BP_ZERO(&lr->lr_blkptr);
 513
 514                 itx->itx_private = ZTOZSB(zp);
 515
 516                 if (!(ioflag & (FSYNC | FDSYNC)) && (zp->z_sync_cnt == 0) &&
 517                     (fsync_cnt == 0))
 518                         itx->itx_sync = B_FALSE;
 519
 520                 zil_itx_assign(zilog, itx, tx);
 521
 522                 off += len;
 523                 resid -= len;
 524         }
 525 }
 526
 527 /*
 528  * zfs_log_truncate() handles TX_TRUNCATE transactions.
 529  */
 530 void
 531 zfs_log_truncate(zilog_t *zilog, dmu_tx_t *tx, int txtype,
 532         znode_t *zp, uint64_t off, uint64_t len)
 533 {
 534         itx_t *itx;
 535         lr_truncate_t *lr;
 536
 537         if (zil_replaying(zilog, tx) || zp->z_unlinked)
 538                 return;
 539
 540         itx = zil_itx_create(txtype, sizeof (*lr));
 541         lr = (lr_truncate_t *)&itx->itx_lr;
 542         lr->lr_foid = zp->z_id;
 543         lr->lr_offset = off;
 544         lr->lr_length = len;
 545
 546         itx->itx_sync = (zp->z_sync_cnt != 0);
 547         zil_itx_assign(zilog, itx, tx);
 548 }
 549
 550 /*
 551  * zfs_log_setattr() handles TX_SETATTR transactions.
 552  */
 553 void
 554 zfs_log_setattr(zilog_t *zilog, dmu_tx_t *tx, int txtype,
 555     znode_t *zp, vattr_t *vap, uint_t mask_applied, zfs_fuid_info_t *fuidp)
 556 {
 557         itx_t           *itx;
 558         lr_setattr_t    *lr;
 559         xvattr_t        *xvap = (xvattr_t *)vap;
 560         size_t          recsize = sizeof (lr_setattr_t);
 561         void            *start;
 562
 563         if (zil_replaying(zilog, tx) || zp->z_unlinked)
 564                 return;
 565
 566         /*
 567          * If XVATTR set, then log record size needs to allow
 568          * for lr_attr_t + xvattr mask, mapsize and create time
 569          * plus actual attribute values
 570          */
 571         if (vap->va_mask & ATTR_XVATTR)
 572                 recsize = sizeof (*lr) + ZIL_XVAT_SIZE(xvap->xva_mapsize);
 573
 574         if (fuidp)
 575                 recsize += fuidp->z_domain_str_sz;
 576
 577         itx = zil_itx_create(txtype, recsize);
 578         lr = (lr_setattr_t *)&itx->itx_lr;
 579         lr->lr_foid = zp->z_id;
 580         lr->lr_mask = (uint64_t)mask_applied;
 581         lr->lr_mode = (uint64_t)vap->va_mode;
 582         if ((mask_applied & ATTR_UID) && IS_EPHEMERAL(vap->va_uid))
 583                 lr->lr_uid = fuidp->z_fuid_owner;
 584         else
 585                 lr->lr_uid = (uint64_t)vap->va_uid;
 586
 587         if ((mask_applied & ATTR_GID) && IS_EPHEMERAL(vap->va_gid))
 588                 lr->lr_gid = fuidp->z_fuid_group;
 589         else
 590                 lr->lr_gid = (uint64_t)vap->va_gid;
 591
 592         lr->lr_size = (uint64_t)vap->va_size;
 593         ZFS_TIME_ENCODE(&vap->va_atime, lr->lr_atime);
 594         ZFS_TIME_ENCODE(&vap->va_mtime, lr->lr_mtime);
 595         start = (lr_setattr_t *)(lr + 1);
 596         if (vap->va_mask & ATTR_XVATTR) {
 597                 zfs_log_xvattr((lr_attr_t *)start, xvap);
 598                 start = (caddr_t)start + ZIL_XVAT_SIZE(xvap->xva_mapsize);
 599         }
 600
 601         /*
 602          * Now stick on domain information if any on end
 603          */
 604
 605         if (fuidp)
 606                 (void) zfs_log_fuid_domains(fuidp, start);
 607
 608         itx->itx_sync = (zp->z_sync_cnt != 0);
 609         zil_itx_assign(zilog, itx, tx);
 610 }
 611
 612 /*
 613  * zfs_log_acl() handles TX_ACL transactions.
 614  */
 615 void
 616 zfs_log_acl(zilog_t *zilog, dmu_tx_t *tx, znode_t *zp,
 617     vsecattr_t *vsecp, zfs_fuid_info_t *fuidp)
 618 {
 619         itx_t *itx;
 620         lr_acl_v0_t *lrv0;
 621         lr_acl_t *lr;
 622         int txtype;
 623         int lrsize;
 624         size_t txsize;
 625         size_t aclbytes = vsecp->vsa_aclentsz;
 626
 627         if (zil_replaying(zilog, tx) || zp->z_unlinked)
 628                 return;
 629
 630         txtype = (ZTOZSB(zp)->z_version < ZPL_VERSION_FUID) ?
 631             TX_ACL_V0 : TX_ACL;
 632
 633         if (txtype == TX_ACL)
 634                 lrsize = sizeof (*lr);
 635         else
 636                 lrsize = sizeof (*lrv0);
 637
 638         txsize = lrsize +
 639             ((txtype == TX_ACL) ? ZIL_ACE_LENGTH(aclbytes) : aclbytes) +
 640             (fuidp ? fuidp->z_domain_str_sz : 0) +
 641             sizeof (uint64_t) * (fuidp ? fuidp->z_fuid_cnt : 0);
 642
 643         itx = zil_itx_create(txtype, txsize);
 644
 645         lr = (lr_acl_t *)&itx->itx_lr;
 646         lr->lr_foid = zp->z_id;
 647         if (txtype == TX_ACL) {
 648                 lr->lr_acl_bytes = aclbytes;
 649                 lr->lr_domcnt = fuidp ? fuidp->z_domain_cnt : 0;
 650                 lr->lr_fuidcnt = fuidp ? fuidp->z_fuid_cnt : 0;
 651                 if (vsecp->vsa_mask & VSA_ACE_ACLFLAGS)
 652                         lr->lr_acl_flags = (uint64_t)vsecp->vsa_aclflags;
 653                 else
 654                         lr->lr_acl_flags = 0;
 655         }
 656         lr->lr_aclcnt = (uint64_t)vsecp->vsa_aclcnt;
 657
 658         if (txtype == TX_ACL_V0) {
 659                 lrv0 = (lr_acl_v0_t *)lr;
 660                 bcopy(vsecp->vsa_aclentp, (ace_t *)(lrv0 + 1), aclbytes);
 661         } else {
 662                 void *start = (ace_t *)(lr + 1);
 663
 664                 bcopy(vsecp->vsa_aclentp, start, aclbytes);
 665
 666                 start = (caddr_t)start + ZIL_ACE_LENGTH(aclbytes);
 667
 668                 if (fuidp) {
 669                         start = zfs_log_fuid_ids(fuidp, start);
 670                         (void) zfs_log_fuid_domains(fuidp, start);
 671                 }
 672         }
 673
 674         itx->itx_sync = (zp->z_sync_cnt != 0);
 675         zil_itx_assign(zilog, itx, tx);
 676 }
 677
 678 #if defined(_KERNEL) && defined(HAVE_SPL)
 679 module_param(zfs_immediate_write_sz, long, 0644);
 680 MODULE_PARM_DESC(zfs_immediate_write_sz, "Largest data block to write to zil");
 681 #endif