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