zfs/lib/libdmu-ctl/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 2008 Sun Microsystems, Inc.  All rights reserved.
  23  * Use is subject to license terms.
  24  */
  25
  26 #pragma ident   "@(#)zfs_log.c  1.13    08/04/09 SMI"
  27
  28 #include <sys/types.h>
  29 #include <sys/param.h>
  30 #include <sys/systm.h>
  31 #include <sys/sysmacros.h>
  32 #include <sys/cmn_err.h>
  33 #include <sys/kmem.h>
  34 #include <sys/thread.h>
  35 #include <sys/file.h>
  36 #include <sys/vfs.h>
  37 #include <sys/zfs_znode.h>
  38 #include <sys/zfs_dir.h>
  39 #include <sys/zil.h>
  40 #include <sys/zil_impl.h>
  41 #include <sys/byteorder.h>
  42 #include <sys/policy.h>
  43 #include <sys/stat.h>
  44 #include <sys/mode.h>
  45 #include <sys/acl.h>
  46 #include <sys/dmu.h>
  47 #include <sys/spa.h>
  48 #include <sys/zfs_fuid.h>
  49 #include <sys/ddi.h>
  50
  51 /*
  52  * All the functions in this file are used to construct the log entries
  53  * to record transactions. They allocate * an intent log transaction
  54  * structure (itx_t) and save within it all the information necessary to
  55  * possibly replay the transaction. The itx is then assigned a sequence
  56  * number and inserted in the in-memory list anchored in the zilog.
  57  */
  58
  59 int
  60 zfs_log_create_txtype(zil_create_t type, vsecattr_t *vsecp, vattr_t *vap)
  61 {
  62         int isxvattr = (vap->va_mask & AT_XVATTR);
  63         switch (type) {
  64         case Z_FILE:
  65                 if (vsecp == NULL && !isxvattr)
  66                         return (TX_CREATE);
  67                 if (vsecp && isxvattr)
  68                         return (TX_CREATE_ACL_ATTR);
  69                 if (vsecp)
  70                         return (TX_CREATE_ACL);
  71                 else
  72                         return (TX_CREATE_ATTR);
  73                 /*NOTREACHED*/
  74         case Z_DIR:
  75                 if (vsecp == NULL && !isxvattr)
  76                         return (TX_MKDIR);
  77                 if (vsecp && isxvattr)
  78                         return (TX_MKDIR_ACL_ATTR);
  79                 if (vsecp)
  80                         return (TX_MKDIR_ACL);
  81                 else
  82                         return (TX_MKDIR_ATTR);
  83         case Z_XATTRDIR:
  84                 return (TX_MKXATTR);
  85         }
  86         ASSERT(0);
  87         return (TX_MAX_TYPE);
  88 }
  89
  90 /*
  91  * build up the log data necessary for logging xvattr_t
  92  * First lr_attr_t is initialized.  following the lr_attr_t
  93  * is the mapsize and attribute bitmap copied from the xvattr_t.
  94  * Following the bitmap and bitmapsize two 64 bit words are reserved
  95  * for the create time which may be set.  Following the create time
  96  * records a single 64 bit integer which has the bits to set on
  97  * replay for the xvattr.
  98  */
  99 static void
 100 zfs_log_xvattr(lr_attr_t *lrattr, xvattr_t *xvap)
 101 {
 102         uint32_t        *bitmap;
 103         uint64_t        *attrs;
 104         uint64_t        *crtime;
 105         xoptattr_t      *xoap;
 106         void            *scanstamp;
 107         int             i;
 108
 109         xoap = xva_getxoptattr(xvap);
 110         ASSERT(xoap);
 111
 112         lrattr->lr_attr_masksize = xvap->xva_mapsize;
 113         bitmap = &lrattr->lr_attr_bitmap;
 114         for (i = 0; i != xvap->xva_mapsize; i++, bitmap++) {
 115                 *bitmap = xvap->xva_reqattrmap[i];
 116         }
 117
 118         /* Now pack the attributes up in a single uint64_t */
 119         attrs = (uint64_t *)bitmap;
 120         crtime = attrs + 1;
 121         scanstamp = (caddr_t)(crtime + 2);
 122         *attrs = 0;
 123         if (XVA_ISSET_REQ(xvap, XAT_READONLY))
 124                 *attrs |= (xoap->xoa_readonly == 0) ? 0 :
 125                     XAT0_READONLY;
 126         if (XVA_ISSET_REQ(xvap, XAT_HIDDEN))
 127                 *attrs |= (xoap->xoa_hidden == 0) ? 0 :
 128                     XAT0_HIDDEN;
 129         if (XVA_ISSET_REQ(xvap, XAT_SYSTEM))
 130                 *attrs |= (xoap->xoa_system == 0) ? 0 :
 131                     XAT0_SYSTEM;
 132         if (XVA_ISSET_REQ(xvap, XAT_ARCHIVE))
 133                 *attrs |= (xoap->xoa_archive == 0) ? 0 :
 134                     XAT0_ARCHIVE;
 135         if (XVA_ISSET_REQ(xvap, XAT_IMMUTABLE))
 136                 *attrs |= (xoap->xoa_immutable == 0) ? 0 :
 137                     XAT0_IMMUTABLE;
 138         if (XVA_ISSET_REQ(xvap, XAT_NOUNLINK))
 139                 *attrs |= (xoap->xoa_nounlink == 0) ? 0 :
 140                     XAT0_NOUNLINK;
 141         if (XVA_ISSET_REQ(xvap, XAT_APPENDONLY))
 142                 *attrs |= (xoap->xoa_appendonly == 0) ? 0 :
 143                     XAT0_APPENDONLY;
 144         if (XVA_ISSET_REQ(xvap, XAT_OPAQUE))
 145                 *attrs |= (xoap->xoa_opaque == 0) ? 0 :
 146                     XAT0_APPENDONLY;
 147         if (XVA_ISSET_REQ(xvap, XAT_NODUMP))
 148                 *attrs |= (xoap->xoa_nodump == 0) ? 0 :
 149                     XAT0_NODUMP;
 150         if (XVA_ISSET_REQ(xvap, XAT_AV_QUARANTINED))
 151                 *attrs |= (xoap->xoa_av_quarantined == 0) ? 0 :
 152                     XAT0_AV_QUARANTINED;
 153         if (XVA_ISSET_REQ(xvap, XAT_AV_MODIFIED))
 154                 *attrs |= (xoap->xoa_av_modified == 0) ? 0 :
 155                     XAT0_AV_MODIFIED;
 156         if (XVA_ISSET_REQ(xvap, XAT_CREATETIME))
 157                 ZFS_TIME_ENCODE(&xoap->xoa_createtime, crtime);
 158         if (XVA_ISSET_REQ(xvap, XAT_AV_SCANSTAMP))
 159                 bcopy(xoap->xoa_av_scanstamp, scanstamp, AV_SCANSTAMP_SZ);
 160 }
 161
 162 static void *
 163 zfs_log_fuid_ids(zfs_fuid_info_t *fuidp, void *start)
 164 {
 165         zfs_fuid_t *zfuid;
 166         uint64_t *fuidloc = start;
 167
 168         /* First copy in the ACE FUIDs */
 169         for (zfuid = list_head(&fuidp->z_fuids); zfuid;
 170             zfuid = list_next(&fuidp->z_fuids, zfuid)) {
 171                 *fuidloc++ = zfuid->z_logfuid;
 172         }
 173         return (fuidloc);
 174 }
 175
 176
 177 static void *
 178 zfs_log_fuid_domains(zfs_fuid_info_t *fuidp, void *start)
 179 {
 180         zfs_fuid_domain_t *zdomain;
 181
 182         /* now copy in the domain info, if any */
 183         if (fuidp->z_domain_str_sz != 0) {
 184                 for (zdomain = list_head(&fuidp->z_domains); zdomain;
 185                     zdomain = list_next(&fuidp->z_domains, zdomain)) {
 186                         bcopy((void *)zdomain->z_domain, start,
 187                             strlen(zdomain->z_domain) + 1);
 188                         start = (caddr_t)start +
 189                             strlen(zdomain->z_domain) + 1;
 190                 }
 191         }
 192         return (start);
 193 }
 194
 195 /*
 196  * zfs_log_create() is used to handle TX_CREATE, TX_CREATE_ATTR, TX_MKDIR,
 197  * TX_MKDIR_ATTR and TX_MKXATTR
 198  * transactions.
 199  *
 200  * TX_CREATE and TX_MKDIR are standard creates, but they may have FUID
 201  * domain information appended prior to the name.  In this case the
 202  * uid/gid in the log record will be a log centric FUID.
 203  *
 204  * TX_CREATE_ACL_ATTR and TX_MKDIR_ACL_ATTR handle special creates that
 205  * may contain attributes, ACL and optional fuid information.
 206  *
 207  * TX_CREATE_ACL and TX_MKDIR_ACL handle special creates that specify
 208  * and ACL and normal users/groups in the ACEs.
 209  *
 210  * There may be an optional xvattr attribute information similar
 211  * to zfs_log_setattr.
 212  *
 213  * Also, after the file name "domain" strings may be appended.
 214  */
 215 void
 216 zfs_log_create(zilog_t *zilog, dmu_tx_t *tx, uint64_t txtype,
 217     znode_t *dzp, znode_t *zp, char *name, vsecattr_t *vsecp,
 218     zfs_fuid_info_t *fuidp, vattr_t *vap)
 219 {
 220         itx_t *itx;
 221         uint64_t seq;
 222         lr_create_t *lr;
 223         lr_acl_create_t *lracl;
 224         size_t aclsize;
 225         size_t xvatsize = 0;
 226         size_t txsize;
 227         xvattr_t *xvap = (xvattr_t *)vap;
 228         void *end;
 229         size_t lrsize;
 230
 231         size_t namesize = strlen(name) + 1;
 232         size_t fuidsz = 0;
 233
 234         if (zilog == NULL)
 235                 return;
 236
 237         /*
 238          * If we have FUIDs present then add in space for
 239          * domains and ACE fuid's if any.
 240          */
 241         if (fuidp) {
 242                 fuidsz += fuidp->z_domain_str_sz;
 243                 fuidsz += fuidp->z_fuid_cnt * sizeof (uint64_t);
 244         }
 245
 246         if (vap->va_mask & AT_XVATTR)
 247                 xvatsize = ZIL_XVAT_SIZE(xvap->xva_mapsize);
 248
 249         if ((int)txtype == TX_CREATE_ATTR || (int)txtype == TX_MKDIR_ATTR ||
 250             (int)txtype == TX_CREATE || (int)txtype == TX_MKDIR ||
 251             (int)txtype == TX_MKXATTR) {
 252                 txsize = sizeof (*lr) + namesize + fuidsz + xvatsize;
 253                 lrsize = sizeof (*lr);
 254         } else {
 255                 aclsize = (vsecp) ? vsecp->vsa_aclentsz : 0;
 256                 txsize =
 257                     sizeof (lr_acl_create_t) + namesize + fuidsz +
 258                     ZIL_ACE_LENGTH(aclsize) + xvatsize;
 259                 lrsize = sizeof (lr_acl_create_t);
 260         }
 261
 262         itx = zil_itx_create(txtype, txsize);
 263
 264         lr = (lr_create_t *)&itx->itx_lr;
 265         lr->lr_doid = dzp->z_id;
 266         lr->lr_foid = zp->z_id;
 267         lr->lr_mode = zp->z_phys->zp_mode;
 268         if (!IS_EPHEMERAL(zp->z_phys->zp_uid)) {
 269                 lr->lr_uid = (uint64_t)zp->z_phys->zp_uid;
 270         } else {
 271                 lr->lr_uid = fuidp->z_fuid_owner;
 272         }
 273         if (!IS_EPHEMERAL(zp->z_phys->zp_gid)) {
 274                 lr->lr_gid = (uint64_t)zp->z_phys->zp_gid;
 275         } else {
 276                 lr->lr_gid = fuidp->z_fuid_group;
 277         }
 278         lr->lr_gen = zp->z_phys->zp_gen;
 279         lr->lr_crtime[0] = zp->z_phys->zp_crtime[0];
 280         lr->lr_crtime[1] = zp->z_phys->zp_crtime[1];
 281         lr->lr_rdev = zp->z_phys->zp_rdev;
 282
 283         /*
 284          * Fill in xvattr info if any
 285          */
 286         if (vap->va_mask & AT_XVATTR) {
 287                 zfs_log_xvattr((lr_attr_t *)((caddr_t)lr + lrsize), xvap);
 288                 end = (caddr_t)lr + lrsize + xvatsize;
 289         } else {
 290                 end = (caddr_t)lr + lrsize;
 291         }
 292
 293         /* Now fill in any ACL info */
 294
 295         if (vsecp) {
 296                 lracl = (lr_acl_create_t *)&itx->itx_lr;
 297                 lracl->lr_aclcnt = vsecp->vsa_aclcnt;
 298                 lracl->lr_acl_bytes = aclsize;
 299                 lracl->lr_domcnt = fuidp ? fuidp->z_domain_cnt : 0;
 300                 lracl->lr_fuidcnt  = fuidp ? fuidp->z_fuid_cnt : 0;
 301                 if (vsecp->vsa_aclflags & VSA_ACE_ACLFLAGS)
 302                         lracl->lr_acl_flags = (uint64_t)vsecp->vsa_aclflags;
 303                 else
 304                         lracl->lr_acl_flags = 0;
 305
 306                 bcopy(vsecp->vsa_aclentp, end, aclsize);
 307                 end = (caddr_t)end + ZIL_ACE_LENGTH(aclsize);
 308         }
 309
 310         /* drop in FUID info */
 311         if (fuidp) {
 312                 end = zfs_log_fuid_ids(fuidp, end);
 313                 end = zfs_log_fuid_domains(fuidp, end);
 314         }
 315         /*
 316          * Now place file name in log record
 317          */
 318         bcopy(name, end, namesize);
 319
 320         seq = zil_itx_assign(zilog, itx, tx);
 321         dzp->z_last_itx = seq;
 322         zp->z_last_itx = seq;
 323 }
 324
 325 /*
 326  * zfs_log_remove() handles both TX_REMOVE and TX_RMDIR transactions.
 327  */
 328 void
 329 zfs_log_remove(zilog_t *zilog, dmu_tx_t *tx, uint64_t txtype,
 330         znode_t *dzp, char *name)
 331 {
 332         itx_t *itx;
 333         uint64_t seq;
 334         lr_remove_t *lr;
 335         size_t namesize = strlen(name) + 1;
 336
 337         if (zilog == NULL)
 338                 return;
 339
 340         itx = zil_itx_create(txtype, sizeof (*lr) + namesize);
 341         lr = (lr_remove_t *)&itx->itx_lr;
 342         lr->lr_doid = dzp->z_id;
 343         bcopy(name, (char *)(lr + 1), namesize);
 344
 345         seq = zil_itx_assign(zilog, itx, tx);
 346         dzp->z_last_itx = seq;
 347 }
 348
 349 /*
 350  * zfs_log_link() handles TX_LINK transactions.
 351  */
 352 void
 353 zfs_log_link(zilog_t *zilog, dmu_tx_t *tx, uint64_t txtype,
 354         znode_t *dzp, znode_t *zp, char *name)
 355 {
 356         itx_t *itx;
 357         uint64_t seq;
 358         lr_link_t *lr;
 359         size_t namesize = strlen(name) + 1;
 360
 361         if (zilog == NULL)
 362                 return;
 363
 364         itx = zil_itx_create(txtype, sizeof (*lr) + namesize);
 365         lr = (lr_link_t *)&itx->itx_lr;
 366         lr->lr_doid = dzp->z_id;
 367         lr->lr_link_obj = zp->z_id;
 368         bcopy(name, (char *)(lr + 1), namesize);
 369
 370         seq = zil_itx_assign(zilog, itx, tx);
 371         dzp->z_last_itx = seq;
 372         zp->z_last_itx = seq;
 373 }
 374
 375 /*
 376  * zfs_log_symlink() handles TX_SYMLINK transactions.
 377  */
 378 void
 379 zfs_log_symlink(zilog_t *zilog, dmu_tx_t *tx, uint64_t txtype,
 380     znode_t *dzp, znode_t *zp, char *name, char *link)
 381 {
 382         itx_t *itx;
 383         uint64_t seq;
 384         lr_create_t *lr;
 385         size_t namesize = strlen(name) + 1;
 386         size_t linksize = strlen(link) + 1;
 387
 388         if (zilog == NULL)
 389                 return;
 390
 391         itx = zil_itx_create(txtype, sizeof (*lr) + namesize + linksize);
 392         lr = (lr_create_t *)&itx->itx_lr;
 393         lr->lr_doid = dzp->z_id;
 394         lr->lr_foid = zp->z_id;
 395         lr->lr_mode = zp->z_phys->zp_mode;
 396         lr->lr_uid = zp->z_phys->zp_uid;
 397         lr->lr_gid = zp->z_phys->zp_gid;
 398         lr->lr_gen = zp->z_phys->zp_gen;
 399         lr->lr_crtime[0] = zp->z_phys->zp_crtime[0];
 400         lr->lr_crtime[1] = zp->z_phys->zp_crtime[1];
 401         bcopy(name, (char *)(lr + 1), namesize);
 402         bcopy(link, (char *)(lr + 1) + namesize, linksize);
 403
 404         seq = zil_itx_assign(zilog, itx, tx);
 405         dzp->z_last_itx = seq;
 406         zp->z_last_itx = seq;
 407 }
 408
 409 /*
 410  * zfs_log_rename() handles TX_RENAME transactions.
 411  */
 412 void
 413 zfs_log_rename(zilog_t *zilog, dmu_tx_t *tx, uint64_t txtype,
 414         znode_t *sdzp, char *sname, znode_t *tdzp, char *dname, znode_t *szp)
 415 {
 416         itx_t *itx;
 417         uint64_t seq;
 418         lr_rename_t *lr;
 419         size_t snamesize = strlen(sname) + 1;
 420         size_t dnamesize = strlen(dname) + 1;
 421
 422         if (zilog == NULL)
 423                 return;
 424
 425         itx = zil_itx_create(txtype, sizeof (*lr) + snamesize + dnamesize);
 426         lr = (lr_rename_t *)&itx->itx_lr;
 427         lr->lr_sdoid = sdzp->z_id;
 428         lr->lr_tdoid = tdzp->z_id;
 429         bcopy(sname, (char *)(lr + 1), snamesize);
 430         bcopy(dname, (char *)(lr + 1) + snamesize, dnamesize);
 431
 432         seq = zil_itx_assign(zilog, itx, tx);
 433         sdzp->z_last_itx = seq;
 434         tdzp->z_last_itx = seq;
 435         szp->z_last_itx = seq;
 436 }
 437
 438 /*
 439  * zfs_log_write() handles TX_WRITE transactions.
 440  */
 441 ssize_t zfs_immediate_write_sz = 32768;
 442
 443 #define ZIL_MAX_LOG_DATA (SPA_MAXBLOCKSIZE - sizeof (zil_trailer_t) - \
 444     sizeof (lr_write_t))
 445
 446 void
 447 zfs_log_write(zilog_t *zilog, dmu_tx_t *tx, int txtype,
 448         znode_t *zp, offset_t off, ssize_t resid, int ioflag)
 449 {
 450         itx_wr_state_t write_state;
 451         boolean_t slogging;
 452         uintptr_t fsync_cnt;
 453
 454         if (zilog == NULL || zp->z_unlinked)
 455                 return;
 456
 457         /*
 458          * Writes are handled in three different ways:
 459          *
 460          * WR_INDIRECT:
 461          *    If the write is greater than zfs_immediate_write_sz and there are
 462          *    no separate logs in this pool then later *if* we need to log the
 463          *    write then dmu_sync() is used to immediately write the block and
 464          *    its block pointer is put in the log record.
 465          * WR_COPIED:
 466          *    If we know we'll immediately be committing the
 467          *    transaction (FSYNC or FDSYNC), the we allocate a larger
 468          *    log record here for the data and copy the data in.
 469          * WR_NEED_COPY:
 470          *    Otherwise we don't allocate a buffer, and *if* we need to
 471          *    flush the write later then a buffer is allocated and
 472          *    we retrieve the data using the dmu.
 473          */
 474         slogging = spa_has_slogs(zilog->zl_spa);
 475         if (resid > zfs_immediate_write_sz && !slogging)
 476                 write_state = WR_INDIRECT;
 477         else if (ioflag & (FSYNC | FDSYNC))
 478                 write_state = WR_COPIED;
 479         else
 480                 write_state = WR_NEED_COPY;
 481
 482         if ((fsync_cnt = (uintptr_t)tsd_get(zfs_fsyncer_key)) != 0) {
 483                 (void) tsd_set(zfs_fsyncer_key, (void *)(fsync_cnt - 1));
 484         }
 485
 486         while (resid) {
 487                 itx_t *itx;
 488                 lr_write_t *lr;
 489                 ssize_t len;
 490
 491                 /*
 492                  * If there are slogs and the write would overflow the largest
 493                  * block, then because we don't want to use the main pool
 494                  * to dmu_sync, we have to split the write.
 495                  */
 496                 if (slogging && resid > ZIL_MAX_LOG_DATA)
 497                         len = SPA_MAXBLOCKSIZE >> 1;
 498                 else
 499                         len = resid;
 500
 501                 itx = zil_itx_create(txtype, sizeof (*lr) +
 502                     (write_state == WR_COPIED ? len : 0));
 503                 lr = (lr_write_t *)&itx->itx_lr;
 504                 if (write_state == WR_COPIED && dmu_read(zp->z_zfsvfs->z_os,
 505                     zp->z_id, off, len, lr + 1) != 0) {
 506                         kmem_free(itx, offsetof(itx_t, itx_lr) +
 507                             itx->itx_lr.lrc_reclen);
 508                         itx = zil_itx_create(txtype, sizeof (*lr));
 509                         lr = (lr_write_t *)&itx->itx_lr;
 510                         write_state = WR_NEED_COPY;
 511                 }
 512
 513                 itx->itx_wr_state = write_state;
 514                 if (write_state == WR_NEED_COPY)
 515                         itx->itx_sod += len;
 516                 lr->lr_foid = zp->z_id;
 517                 lr->lr_offset = off;
 518                 lr->lr_length = len;
 519                 lr->lr_blkoff = 0;
 520                 BP_ZERO(&lr->lr_blkptr);
 521
 522                 itx->itx_private = zp->z_zfsvfs;
 523
 524                 if ((zp->z_sync_cnt != 0) || (fsync_cnt != 0) ||
 525                     (ioflag & (FSYNC | FDSYNC)))
 526                         itx->itx_sync = B_TRUE;
 527                 else
 528                         itx->itx_sync = B_FALSE;
 529
 530                 zp->z_last_itx = zil_itx_assign(zilog, itx, tx);
 531
 532                 off += len;
 533                 resid -= len;
 534         }
 535 }
 536
 537 /*
 538  * zfs_log_truncate() handles TX_TRUNCATE transactions.
 539  */
 540 void
 541 zfs_log_truncate(zilog_t *zilog, dmu_tx_t *tx, int txtype,
 542         znode_t *zp, uint64_t off, uint64_t len)
 543 {
 544         itx_t *itx;
 545         uint64_t seq;
 546         lr_truncate_t *lr;
 547
 548         if (zilog == NULL || zp->z_unlinked)
 549                 return;
 550
 551         itx = zil_itx_create(txtype, sizeof (*lr));
 552         lr = (lr_truncate_t *)&itx->itx_lr;
 553         lr->lr_foid = zp->z_id;
 554         lr->lr_offset = off;
 555         lr->lr_length = len;
 556
 557         itx->itx_sync = (zp->z_sync_cnt != 0);
 558         seq = zil_itx_assign(zilog, itx, tx);
 559         zp->z_last_itx = seq;
 560 }
 561
 562 /*
 563  * zfs_log_setattr() handles TX_SETATTR transactions.
 564  */
 565 void
 566 zfs_log_setattr(zilog_t *zilog, dmu_tx_t *tx, int txtype,
 567         znode_t *zp, vattr_t *vap, uint_t mask_applied, zfs_fuid_info_t *fuidp)
 568 {
 569         itx_t           *itx;
 570         uint64_t        seq;
 571         lr_setattr_t    *lr;
 572         xvattr_t        *xvap = (xvattr_t *)vap;
 573         size_t          recsize = sizeof (lr_setattr_t);
 574         void            *start;
 575
 576
 577         if (zilog == NULL || zp->z_unlinked)
 578                 return;
 579
 580         /*
 581          * If XVATTR set, then log record size needs to allow
 582          * for lr_attr_t + xvattr mask, mapsize and create time
 583          * plus actual attribute values
 584          */
 585         if (vap->va_mask & AT_XVATTR)
 586                 recsize = sizeof (*lr) + ZIL_XVAT_SIZE(xvap->xva_mapsize);
 587
 588         if (fuidp)
 589                 recsize += fuidp->z_domain_str_sz;
 590
 591         itx = zil_itx_create(txtype, recsize);
 592         lr = (lr_setattr_t *)&itx->itx_lr;
 593         lr->lr_foid = zp->z_id;
 594         lr->lr_mask = (uint64_t)mask_applied;
 595         lr->lr_mode = (uint64_t)vap->va_mode;
 596         if ((mask_applied & AT_UID) && IS_EPHEMERAL(vap->va_uid))
 597                 lr->lr_uid = fuidp->z_fuid_owner;
 598         else
 599                 lr->lr_uid = (uint64_t)vap->va_uid;
 600
 601         if ((mask_applied & AT_GID) && IS_EPHEMERAL(vap->va_gid))
 602                 lr->lr_gid = fuidp->z_fuid_group;
 603         else
 604                 lr->lr_gid = (uint64_t)vap->va_gid;
 605
 606         lr->lr_size = (uint64_t)vap->va_size;
 607         ZFS_TIME_ENCODE(&vap->va_atime, lr->lr_atime);
 608         ZFS_TIME_ENCODE(&vap->va_mtime, lr->lr_mtime);
 609         start = (lr_setattr_t *)(lr + 1);
 610         if (vap->va_mask & AT_XVATTR) {
 611                 zfs_log_xvattr((lr_attr_t *)start, xvap);
 612                 start = (caddr_t)start + ZIL_XVAT_SIZE(xvap->xva_mapsize);
 613         }
 614
 615         /*
 616          * Now stick on domain information if any on end
 617          */
 618
 619         if (fuidp)
 620                 (void) zfs_log_fuid_domains(fuidp, start);
 621
 622         itx->itx_sync = (zp->z_sync_cnt != 0);
 623         seq = zil_itx_assign(zilog, itx, tx);
 624         zp->z_last_itx = seq;
 625 }
 626
 627 /*
 628  * zfs_log_acl() handles TX_ACL transactions.
 629  */
 630 void
 631 zfs_log_acl(zilog_t *zilog, dmu_tx_t *tx, znode_t *zp,
 632     vsecattr_t *vsecp, zfs_fuid_info_t *fuidp)
 633 {
 634         itx_t *itx;
 635         uint64_t seq;
 636         lr_acl_v0_t *lrv0;
 637         lr_acl_t *lr;
 638         int txtype;
 639         int lrsize;
 640         size_t txsize;
 641         size_t aclbytes = vsecp->vsa_aclentsz;
 642
 643         txtype = (zp->z_zfsvfs->z_version == ZPL_VERSION_INITIAL) ?
 644             TX_ACL_V0 : TX_ACL;
 645
 646         if (txtype == TX_ACL)
 647                 lrsize = sizeof (*lr);
 648         else
 649                 lrsize = sizeof (*lrv0);
 650
 651         if (zilog == NULL || zp->z_unlinked)
 652                 return;
 653
 654         txsize = lrsize +
 655             ((txtype == TX_ACL) ? ZIL_ACE_LENGTH(aclbytes) : aclbytes) +
 656             (fuidp ? fuidp->z_domain_str_sz : 0) +
 657             sizeof (uint64) * (fuidp ? fuidp->z_fuid_cnt : 0);
 658
 659         itx = zil_itx_create(txtype, txsize);
 660
 661         lr = (lr_acl_t *)&itx->itx_lr;
 662         lr->lr_foid = zp->z_id;
 663         if (txtype == TX_ACL) {
 664                 lr->lr_acl_bytes = aclbytes;
 665                 lr->lr_domcnt = fuidp ? fuidp->z_domain_cnt : 0;
 666                 lr->lr_fuidcnt = fuidp ? fuidp->z_fuid_cnt : 0;
 667                 if (vsecp->vsa_mask & VSA_ACE_ACLFLAGS)
 668                         lr->lr_acl_flags = (uint64_t)vsecp->vsa_aclflags;
 669                 else
 670                         lr->lr_acl_flags = 0;
 671         }
 672         lr->lr_aclcnt = (uint64_t)vsecp->vsa_aclcnt;
 673
 674         if (txtype == TX_ACL_V0) {
 675                 lrv0 = (lr_acl_v0_t *)lr;
 676                 bcopy(vsecp->vsa_aclentp, (ace_t *)(lrv0 + 1), aclbytes);
 677         } else {
 678                 void *start = (ace_t *)(lr + 1);
 679
 680                 bcopy(vsecp->vsa_aclentp, start, aclbytes);
 681
 682                 start = (caddr_t)start + ZIL_ACE_LENGTH(aclbytes);
 683
 684                 if (fuidp) {
 685                         start = zfs_log_fuid_ids(fuidp, start);
 686                         (void) zfs_log_fuid_domains(fuidp, start);
 687                 }
 688         }
 689
 690         itx->itx_sync = (zp->z_sync_cnt != 0);
 691         seq = zil_itx_assign(zilog, itx, tx);
 692         zp->z_last_itx = seq;
 693 }