zfs/lib/libdmu-ctl/zfs_replay.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_replay.c       1.7     08/01/14 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/fcntl.h>
  37 #include <sys/vfs.h>
  38 #include <sys/fs/zfs.h>
  39 #include <sys/zfs_znode.h>
  40 #include <sys/zfs_dir.h>
  41 #include <sys/zfs_acl.h>
  42 #include <sys/zfs_fuid.h>
  43 #include <sys/spa.h>
  44 #include <sys/zil.h>
  45 #include <sys/byteorder.h>
  46 #include <sys/stat.h>
  47 #include <sys/mode.h>
  48 #include <sys/acl.h>
  49 #include <sys/atomic.h>
  50 #include <sys/cred.h>
  51
  52 /*
  53  * Functions to replay ZFS intent log (ZIL) records
  54  * The functions are called through a function vector (zfs_replay_vector)
  55  * which is indexed by the transaction type.
  56  */
  57
  58 static void
  59 zfs_init_vattr(vattr_t *vap, uint64_t mask, uint64_t mode,
  60         uint64_t uid, uint64_t gid, uint64_t rdev, uint64_t nodeid)
  61 {
  62         bzero(vap, sizeof (*vap));
  63         vap->va_mask = (uint_t)mask;
  64         vap->va_type = IFTOVT(mode);
  65         vap->va_mode = mode & MODEMASK;
  66         vap->va_uid = (uid_t)(IS_EPHEMERAL(uid)) ? -1 : uid;
  67         vap->va_gid = (gid_t)(IS_EPHEMERAL(gid)) ? -1 : gid;
  68         vap->va_rdev = zfs_cmpldev(rdev);
  69         vap->va_nodeid = nodeid;
  70 }
  71
  72 /* ARGSUSED */
  73 static int
  74 zfs_replay_error(zfsvfs_t *zfsvfs, lr_t *lr, boolean_t byteswap)
  75 {
  76         return (ENOTSUP);
  77 }
  78
  79 static void
  80 zfs_replay_xvattr(lr_attr_t *lrattr, xvattr_t *xvap)
  81 {
  82         xoptattr_t *xoap = NULL;
  83         uint64_t *attrs;
  84         uint64_t *crtime;
  85         uint32_t *bitmap;
  86         void *scanstamp;
  87         int i;
  88
  89         xvap->xva_vattr.va_mask |= AT_XVATTR;
  90         if ((xoap = xva_getxoptattr(xvap)) == NULL) {
  91                 xvap->xva_vattr.va_mask &= ~AT_XVATTR; /* shouldn't happen */
  92                 return;
  93         }
  94
  95         ASSERT(lrattr->lr_attr_masksize == xvap->xva_mapsize);
  96
  97         bitmap = &lrattr->lr_attr_bitmap;
  98         for (i = 0; i != lrattr->lr_attr_masksize; i++, bitmap++)
  99                 xvap->xva_reqattrmap[i] = *bitmap;
 100
 101         attrs = (uint64_t *)(lrattr + lrattr->lr_attr_masksize - 1);
 102         crtime = attrs + 1;
 103         scanstamp = (caddr_t)(crtime + 2);
 104
 105         if (XVA_ISSET_REQ(xvap, XAT_HIDDEN))
 106                 xoap->xoa_hidden = ((*attrs & XAT0_HIDDEN) != 0);
 107         if (XVA_ISSET_REQ(xvap, XAT_SYSTEM))
 108                 xoap->xoa_system = ((*attrs & XAT0_SYSTEM) != 0);
 109         if (XVA_ISSET_REQ(xvap, XAT_ARCHIVE))
 110                 xoap->xoa_archive = ((*attrs & XAT0_ARCHIVE) != 0);
 111         if (XVA_ISSET_REQ(xvap, XAT_READONLY))
 112                 xoap->xoa_readonly = ((*attrs & XAT0_READONLY) != 0);
 113         if (XVA_ISSET_REQ(xvap, XAT_IMMUTABLE))
 114                 xoap->xoa_immutable = ((*attrs & XAT0_IMMUTABLE) != 0);
 115         if (XVA_ISSET_REQ(xvap, XAT_NOUNLINK))
 116                 xoap->xoa_nounlink = ((*attrs & XAT0_NOUNLINK) != 0);
 117         if (XVA_ISSET_REQ(xvap, XAT_APPENDONLY))
 118                 xoap->xoa_appendonly = ((*attrs & XAT0_APPENDONLY) != 0);
 119         if (XVA_ISSET_REQ(xvap, XAT_NODUMP))
 120                 xoap->xoa_nodump = ((*attrs & XAT0_NODUMP) != 0);
 121         if (XVA_ISSET_REQ(xvap, XAT_OPAQUE))
 122                 xoap->xoa_opaque = ((*attrs & XAT0_OPAQUE) != 0);
 123         if (XVA_ISSET_REQ(xvap, XAT_AV_MODIFIED))
 124                 xoap->xoa_av_modified = ((*attrs & XAT0_AV_MODIFIED) != 0);
 125         if (XVA_ISSET_REQ(xvap, XAT_AV_QUARANTINED))
 126                 xoap->xoa_av_quarantined =
 127                     ((*attrs & XAT0_AV_QUARANTINED) != 0);
 128         if (XVA_ISSET_REQ(xvap, XAT_CREATETIME))
 129                 ZFS_TIME_DECODE(&xoap->xoa_createtime, crtime);
 130         if (XVA_ISSET_REQ(xvap, XAT_AV_SCANSTAMP))
 131                 bcopy(scanstamp, xoap->xoa_av_scanstamp, AV_SCANSTAMP_SZ);
 132 }
 133
 134 static int
 135 zfs_replay_domain_cnt(uint64_t uid, uint64_t gid)
 136 {
 137         uint64_t uid_idx;
 138         uint64_t gid_idx;
 139         int domcnt = 0;
 140
 141         uid_idx = FUID_INDEX(uid);
 142         gid_idx = FUID_INDEX(gid);
 143         if (uid_idx)
 144                 domcnt++;
 145         if (gid_idx > 0 && gid_idx != uid_idx)
 146                 domcnt++;
 147
 148         return (domcnt);
 149 }
 150
 151 static void *
 152 zfs_replay_fuid_domain_common(zfs_fuid_info_t *fuid_infop, void *start,
 153     int domcnt)
 154 {
 155         int i;
 156
 157         for (i = 0; i != domcnt; i++) {
 158                 fuid_infop->z_domain_table[i] = start;
 159                 start = (caddr_t)start + strlen(start) + 1;
 160         }
 161
 162         return (start);
 163 }
 164
 165 /*
 166  * Set the uid/gid in the fuid_info structure.
 167  */
 168 static void
 169 zfs_replay_fuid_ugid(zfs_fuid_info_t *fuid_infop, uint64_t uid, uint64_t gid)
 170 {
 171         /*
 172          * If owner or group are log specific FUIDs then slurp up
 173          * domain information and build zfs_fuid_info_t
 174          */
 175         if (IS_EPHEMERAL(uid))
 176                 fuid_infop->z_fuid_owner = uid;
 177
 178         if (IS_EPHEMERAL(gid))
 179                 fuid_infop->z_fuid_group = gid;
 180 }
 181
 182 /*
 183  * Load fuid domains into fuid_info_t
 184  */
 185 static zfs_fuid_info_t *
 186 zfs_replay_fuid_domain(void *buf, void **end, uint64_t uid, uint64_t gid)
 187 {
 188         int domcnt;
 189
 190         zfs_fuid_info_t *fuid_infop;
 191
 192         fuid_infop = zfs_fuid_info_alloc();
 193
 194         domcnt = zfs_replay_domain_cnt(uid, gid);
 195
 196         if (domcnt == 0)
 197                 return (fuid_infop);
 198
 199         fuid_infop->z_domain_table =
 200             kmem_zalloc(domcnt * sizeof (char **), KM_SLEEP);
 201
 202         zfs_replay_fuid_ugid(fuid_infop, uid, gid);
 203
 204         fuid_infop->z_domain_cnt = domcnt;
 205         *end = zfs_replay_fuid_domain_common(fuid_infop, buf, domcnt);
 206         return (fuid_infop);
 207 }
 208
 209 /*
 210  * load zfs_fuid_t's and fuid_domains into fuid_info_t
 211  */
 212 static zfs_fuid_info_t *
 213 zfs_replay_fuids(void *start, void **end, int idcnt, int domcnt, uint64_t uid,
 214     uint64_t gid)
 215 {
 216         uint64_t *log_fuid = (uint64_t *)start;
 217         zfs_fuid_info_t *fuid_infop;
 218         int i;
 219
 220         fuid_infop = zfs_fuid_info_alloc();
 221         fuid_infop->z_domain_cnt = domcnt;
 222
 223         fuid_infop->z_domain_table =
 224             kmem_zalloc(domcnt * sizeof (char **), KM_SLEEP);
 225
 226         for (i = 0; i != idcnt; i++) {
 227                 zfs_fuid_t *zfuid;
 228
 229                 zfuid = kmem_alloc(sizeof (zfs_fuid_t), KM_SLEEP);
 230                 zfuid->z_logfuid = *log_fuid;
 231                 zfuid->z_id = -1;
 232                 zfuid->z_domidx = 0;
 233                 list_insert_tail(&fuid_infop->z_fuids, zfuid);
 234                 log_fuid++;
 235         }
 236
 237         zfs_replay_fuid_ugid(fuid_infop, uid, gid);
 238
 239         *end = zfs_replay_fuid_domain_common(fuid_infop, log_fuid, domcnt);
 240         return (fuid_infop);
 241 }
 242
 243 static void
 244 zfs_replay_swap_attrs(lr_attr_t *lrattr)
 245 {
 246         /* swap the lr_attr structure */
 247         byteswap_uint32_array(lrattr, sizeof (*lrattr));
 248         /* swap the bitmap */
 249         byteswap_uint32_array(lrattr + 1, (lrattr->lr_attr_masksize - 1) *
 250             sizeof (uint32_t));
 251         /* swap the attributes, create time + 64 bit word for attributes */
 252         byteswap_uint64_array((caddr_t)(lrattr + 1) + (sizeof (uint32_t) *
 253             (lrattr->lr_attr_masksize - 1)), 3 * sizeof (uint64_t));
 254 }
 255
 256 /*
 257  * Replay file create with optional ACL, xvattr information as well
 258  * as option FUID information.
 259  */
 260 static int
 261 zfs_replay_create_acl(zfsvfs_t *zfsvfs,
 262     lr_acl_create_t *lracl, boolean_t byteswap)
 263 {
 264         char *name = NULL;              /* location determined later */
 265         lr_create_t *lr = (lr_create_t *)lracl;
 266         znode_t *dzp;
 267         vnode_t *vp = NULL;
 268         xvattr_t xva;
 269         int vflg = 0;
 270         vsecattr_t vsec = { 0 };
 271         lr_attr_t *lrattr;
 272         void *aclstart;
 273         void *fuidstart;
 274         size_t xvatlen = 0;
 275         uint64_t txtype;
 276         int error;
 277
 278         if (byteswap) {
 279                 byteswap_uint64_array(lracl, sizeof (*lracl));
 280                 txtype = (int)lr->lr_common.lrc_txtype;
 281                 if (txtype == TX_CREATE_ACL_ATTR ||
 282                     txtype == TX_MKDIR_ACL_ATTR) {
 283                         lrattr = (lr_attr_t *)(caddr_t)(lracl + 1);
 284                         zfs_replay_swap_attrs(lrattr);
 285                         xvatlen = ZIL_XVAT_SIZE(lrattr->lr_attr_masksize);
 286                 }
 287
 288                 aclstart = (caddr_t)(lracl + 1) + xvatlen;
 289                 zfs_ace_byteswap(aclstart, lracl->lr_acl_bytes, B_FALSE);
 290                 /* swap fuids */
 291                 if (lracl->lr_fuidcnt) {
 292                         byteswap_uint64_array((caddr_t)aclstart +
 293                             ZIL_ACE_LENGTH(lracl->lr_acl_bytes),
 294                             lracl->lr_fuidcnt * sizeof (uint64_t));
 295                 }
 296         }
 297
 298         if ((error = zfs_zget(zfsvfs, lr->lr_doid, &dzp)) != 0)
 299                 return (error);
 300
 301         xva_init(&xva);
 302         zfs_init_vattr(&xva.xva_vattr, AT_TYPE | AT_MODE | AT_UID | AT_GID,
 303             lr->lr_mode, lr->lr_uid, lr->lr_gid, lr->lr_rdev, lr->lr_foid);
 304
 305         /*
 306          * All forms of zfs create (create, mkdir, mkxattrdir, symlink)
 307          * eventually end up in zfs_mknode(), which assigns the object's
 308          * creation time and generation number.  The generic VOP_CREATE()
 309          * doesn't have either concept, so we smuggle the values inside
 310          * the vattr's otherwise unused va_ctime and va_nblocks fields.
 311          */
 312         ZFS_TIME_DECODE(&xva.xva_vattr.va_ctime, lr->lr_crtime);
 313         xva.xva_vattr.va_nblocks = lr->lr_gen;
 314
 315         error = dmu_object_info(zfsvfs->z_os, lr->lr_foid, NULL);
 316         if (error != ENOENT)
 317                 goto bail;
 318
 319         if (lr->lr_common.lrc_txtype & TX_CI)
 320                 vflg |= FIGNORECASE;
 321         switch ((int)lr->lr_common.lrc_txtype) {
 322         case TX_CREATE_ACL:
 323                 aclstart = (caddr_t)(lracl + 1);
 324                 fuidstart = (caddr_t)aclstart +
 325                     ZIL_ACE_LENGTH(lracl->lr_acl_bytes);
 326                 zfsvfs->z_fuid_replay = zfs_replay_fuids(fuidstart,
 327                     (void *)&name, lracl->lr_fuidcnt, lracl->lr_domcnt,
 328                     lr->lr_uid, lr->lr_gid);
 329                 /*FALLTHROUGH*/
 330         case TX_CREATE_ACL_ATTR:
 331                 if (name == NULL) {
 332                         lrattr = (lr_attr_t *)(caddr_t)(lracl + 1);
 333                         xvatlen = ZIL_XVAT_SIZE(lrattr->lr_attr_masksize);
 334                         xva.xva_vattr.va_mask |= AT_XVATTR;
 335                         zfs_replay_xvattr(lrattr, &xva);
 336                 }
 337                 vsec.vsa_mask = VSA_ACE | VSA_ACE_ACLFLAGS;
 338                 vsec.vsa_aclentp = (caddr_t)(lracl + 1) + xvatlen;
 339                 vsec.vsa_aclcnt = lracl->lr_aclcnt;
 340                 vsec.vsa_aclentsz = lracl->lr_acl_bytes;
 341                 vsec.vsa_aclflags = lracl->lr_acl_flags;
 342                 if (zfsvfs->z_fuid_replay == NULL) {
 343                         fuidstart = (caddr_t)(lracl + 1) + xvatlen +
 344                             ZIL_ACE_LENGTH(lracl->lr_acl_bytes);
 345                         zfsvfs->z_fuid_replay =
 346                             zfs_replay_fuids(fuidstart,
 347                             (void *)&name, lracl->lr_fuidcnt, lracl->lr_domcnt,
 348                             lr->lr_uid, lr->lr_gid);
 349                 }
 350
 351                 error = VOP_CREATE(ZTOV(dzp), name, &xva.xva_vattr,
 352                     0, 0, &vp, kcred, vflg, NULL, &vsec);
 353                 break;
 354         case TX_MKDIR_ACL:
 355                 aclstart = (caddr_t)(lracl + 1);
 356                 fuidstart = (caddr_t)aclstart +
 357                     ZIL_ACE_LENGTH(lracl->lr_acl_bytes);
 358                 zfsvfs->z_fuid_replay = zfs_replay_fuids(fuidstart,
 359                     (void *)&name, lracl->lr_fuidcnt, lracl->lr_domcnt,
 360                     lr->lr_uid, lr->lr_gid);
 361                 /*FALLTHROUGH*/
 362         case TX_MKDIR_ACL_ATTR:
 363                 if (name == NULL) {
 364                         lrattr = (lr_attr_t *)(caddr_t)(lracl + 1);
 365                         xvatlen = ZIL_XVAT_SIZE(lrattr->lr_attr_masksize);
 366                         zfs_replay_xvattr(lrattr, &xva);
 367                 }
 368                 vsec.vsa_mask = VSA_ACE | VSA_ACE_ACLFLAGS;
 369                 vsec.vsa_aclentp = (caddr_t)(lracl + 1) + xvatlen;
 370                 vsec.vsa_aclcnt = lracl->lr_aclcnt;
 371                 vsec.vsa_aclentsz = lracl->lr_acl_bytes;
 372                 vsec.vsa_aclflags = lracl->lr_acl_flags;
 373                 if (zfsvfs->z_fuid_replay == NULL) {
 374                         fuidstart = (caddr_t)(lracl + 1) + xvatlen +
 375                             ZIL_ACE_LENGTH(lracl->lr_acl_bytes);
 376                         zfsvfs->z_fuid_replay =
 377                             zfs_replay_fuids(fuidstart,
 378                             (void *)&name, lracl->lr_fuidcnt, lracl->lr_domcnt,
 379                             lr->lr_uid, lr->lr_gid);
 380                 }
 381                 error = VOP_MKDIR(ZTOV(dzp), name, &xva.xva_vattr,
 382                     &vp, kcred, NULL, vflg, &vsec);
 383                 break;
 384         default:
 385                 error = ENOTSUP;
 386         }
 387
 388 bail:
 389         if (error == 0 && vp != NULL)
 390                 VN_RELE(vp);
 391
 392         VN_RELE(ZTOV(dzp));
 393
 394         zfs_fuid_info_free(zfsvfs->z_fuid_replay);
 395         zfsvfs->z_fuid_replay = NULL;
 396
 397         return (error);
 398 }
 399
 400 static int
 401 zfs_replay_create(zfsvfs_t *zfsvfs, lr_create_t *lr, boolean_t byteswap)
 402 {
 403         char *name = NULL;              /* location determined later */
 404         char *link;                     /* symlink content follows name */
 405         znode_t *dzp;
 406         vnode_t *vp = NULL;
 407         xvattr_t xva;
 408         int vflg = 0;
 409         size_t lrsize = sizeof (lr_create_t);
 410         lr_attr_t *lrattr;
 411         void *start;
 412         size_t xvatlen;
 413         uint64_t txtype;
 414         int error;
 415
 416         if (byteswap) {
 417                 byteswap_uint64_array(lr, sizeof (*lr));
 418                 txtype = (int)lr->lr_common.lrc_txtype;
 419                 if (txtype == TX_CREATE_ATTR || txtype == TX_MKDIR_ATTR)
 420                         zfs_replay_swap_attrs((lr_attr_t *)(lr + 1));
 421         }
 422
 423
 424         if ((error = zfs_zget(zfsvfs, lr->lr_doid, &dzp)) != 0)
 425                 return (error);
 426
 427         xva_init(&xva);
 428         zfs_init_vattr(&xva.xva_vattr, AT_TYPE | AT_MODE | AT_UID | AT_GID,
 429             lr->lr_mode, lr->lr_uid, lr->lr_gid, lr->lr_rdev, lr->lr_foid);
 430
 431         /*
 432          * All forms of zfs create (create, mkdir, mkxattrdir, symlink)
 433          * eventually end up in zfs_mknode(), which assigns the object's
 434          * creation time and generation number.  The generic VOP_CREATE()
 435          * doesn't have either concept, so we smuggle the values inside
 436          * the vattr's otherwise unused va_ctime and va_nblocks fields.
 437          */
 438         ZFS_TIME_DECODE(&xva.xva_vattr.va_ctime, lr->lr_crtime);
 439         xva.xva_vattr.va_nblocks = lr->lr_gen;
 440
 441         error = dmu_object_info(zfsvfs->z_os, lr->lr_foid, NULL);
 442         if (error != ENOENT)
 443                 goto out;
 444
 445         if (lr->lr_common.lrc_txtype & TX_CI)
 446                 vflg |= FIGNORECASE;
 447
 448         /*
 449          * Symlinks don't have fuid info, and CIFS never creates
 450          * symlinks.
 451          *
 452          * The _ATTR versions will grab the fuid info in their subcases.
 453          */
 454         if ((int)lr->lr_common.lrc_txtype != TX_SYMLINK &&
 455             (int)lr->lr_common.lrc_txtype != TX_MKDIR_ATTR &&
 456             (int)lr->lr_common.lrc_txtype != TX_CREATE_ATTR) {
 457                 start = (lr + 1);
 458                 zfsvfs->z_fuid_replay =
 459                     zfs_replay_fuid_domain(start, &start,
 460                     lr->lr_uid, lr->lr_gid);
 461         }
 462
 463         switch ((int)lr->lr_common.lrc_txtype) {
 464         case TX_CREATE_ATTR:
 465                 lrattr = (lr_attr_t *)(caddr_t)(lr + 1);
 466                 xvatlen = ZIL_XVAT_SIZE(lrattr->lr_attr_masksize);
 467                 zfs_replay_xvattr((lr_attr_t *)((caddr_t)lr + lrsize), &xva);
 468                 start = (caddr_t)(lr + 1) + xvatlen;
 469                 zfsvfs->z_fuid_replay =
 470                     zfs_replay_fuid_domain(start, &start,
 471                     lr->lr_uid, lr->lr_gid);
 472                 name = (char *)start;
 473
 474                 /*FALLTHROUGH*/
 475         case TX_CREATE:
 476                 if (name == NULL)
 477                         name = (char *)start;
 478
 479                 error = VOP_CREATE(ZTOV(dzp), name, &xva.xva_vattr,
 480                     0, 0, &vp, kcred, vflg, NULL, NULL);
 481                 break;
 482         case TX_MKDIR_ATTR:
 483                 lrattr = (lr_attr_t *)(caddr_t)(lr + 1);
 484                 xvatlen = ZIL_XVAT_SIZE(lrattr->lr_attr_masksize);
 485                 zfs_replay_xvattr((lr_attr_t *)((caddr_t)lr + lrsize), &xva);
 486                 start = (caddr_t)(lr + 1) + xvatlen;
 487                 zfsvfs->z_fuid_replay =
 488                     zfs_replay_fuid_domain(start, &start,
 489                     lr->lr_uid, lr->lr_gid);
 490                 name = (char *)start;
 491
 492                 /*FALLTHROUGH*/
 493         case TX_MKDIR:
 494                 if (name == NULL)
 495                         name = (char *)(lr + 1);
 496
 497                 error = VOP_MKDIR(ZTOV(dzp), name, &xva.xva_vattr,
 498                     &vp, kcred, NULL, vflg, NULL);
 499                 break;
 500         case TX_MKXATTR:
 501                 name = (char *)(lr + 1);
 502                 error = zfs_make_xattrdir(dzp, &xva.xva_vattr, &vp, kcred);
 503                 break;
 504         case TX_SYMLINK:
 505                 name = (char *)(lr + 1);
 506                 link = name + strlen(name) + 1;
 507                 error = VOP_SYMLINK(ZTOV(dzp), name, &xva.xva_vattr,
 508                     link, kcred, NULL, vflg);
 509                 break;
 510         default:
 511                 error = ENOTSUP;
 512         }
 513
 514 out:
 515         if (error == 0 && vp != NULL)
 516                 VN_RELE(vp);
 517
 518         VN_RELE(ZTOV(dzp));
 519
 520         if (zfsvfs->z_fuid_replay)
 521                 zfs_fuid_info_free(zfsvfs->z_fuid_replay);
 522         zfsvfs->z_fuid_replay = NULL;
 523         return (error);
 524 }
 525
 526 static int
 527 zfs_replay_remove(zfsvfs_t *zfsvfs, lr_remove_t *lr, boolean_t byteswap)
 528 {
 529         char *name = (char *)(lr + 1);  /* name follows lr_remove_t */
 530         znode_t *dzp;
 531         int error;
 532         int vflg = 0;
 533
 534         if (byteswap)
 535                 byteswap_uint64_array(lr, sizeof (*lr));
 536
 537         if ((error = zfs_zget(zfsvfs, lr->lr_doid, &dzp)) != 0)
 538                 return (error);
 539
 540         if (lr->lr_common.lrc_txtype & TX_CI)
 541                 vflg |= FIGNORECASE;
 542
 543         switch ((int)lr->lr_common.lrc_txtype) {
 544         case TX_REMOVE:
 545                 error = VOP_REMOVE(ZTOV(dzp), name, kcred, NULL, vflg);
 546                 break;
 547         case TX_RMDIR:
 548                 error = VOP_RMDIR(ZTOV(dzp), name, NULL, kcred, NULL, vflg);
 549                 break;
 550         default:
 551                 error = ENOTSUP;
 552         }
 553
 554         VN_RELE(ZTOV(dzp));
 555
 556         return (error);
 557 }
 558
 559 static int
 560 zfs_replay_link(zfsvfs_t *zfsvfs, lr_link_t *lr, boolean_t byteswap)
 561 {
 562         char *name = (char *)(lr + 1);  /* name follows lr_link_t */
 563         znode_t *dzp, *zp;
 564         int error;
 565         int vflg = 0;
 566
 567         if (byteswap)
 568                 byteswap_uint64_array(lr, sizeof (*lr));
 569
 570         if ((error = zfs_zget(zfsvfs, lr->lr_doid, &dzp)) != 0)
 571                 return (error);
 572
 573         if ((error = zfs_zget(zfsvfs, lr->lr_link_obj, &zp)) != 0) {
 574                 VN_RELE(ZTOV(dzp));
 575                 return (error);
 576         }
 577
 578         if (lr->lr_common.lrc_txtype & TX_CI)
 579                 vflg |= FIGNORECASE;
 580
 581         error = VOP_LINK(ZTOV(dzp), ZTOV(zp), name, kcred, NULL, vflg);
 582
 583         VN_RELE(ZTOV(zp));
 584         VN_RELE(ZTOV(dzp));
 585
 586         return (error);
 587 }
 588
 589 static int
 590 zfs_replay_rename(zfsvfs_t *zfsvfs, lr_rename_t *lr, boolean_t byteswap)
 591 {
 592         char *sname = (char *)(lr + 1); /* sname and tname follow lr_rename_t */
 593         char *tname = sname + strlen(sname) + 1;
 594         znode_t *sdzp, *tdzp;
 595         int error;
 596         int vflg = 0;
 597
 598         if (byteswap)
 599                 byteswap_uint64_array(lr, sizeof (*lr));
 600
 601         if ((error = zfs_zget(zfsvfs, lr->lr_sdoid, &sdzp)) != 0)
 602                 return (error);
 603
 604         if ((error = zfs_zget(zfsvfs, lr->lr_tdoid, &tdzp)) != 0) {
 605                 VN_RELE(ZTOV(sdzp));
 606                 return (error);
 607         }
 608
 609         if (lr->lr_common.lrc_txtype & TX_CI)
 610                 vflg |= FIGNORECASE;
 611
 612         error = VOP_RENAME(ZTOV(sdzp), sname, ZTOV(tdzp), tname, kcred,
 613             NULL, vflg);
 614
 615         VN_RELE(ZTOV(tdzp));
 616         VN_RELE(ZTOV(sdzp));
 617
 618         return (error);
 619 }
 620
 621 static int
 622 zfs_replay_write(zfsvfs_t *zfsvfs, lr_write_t *lr, boolean_t byteswap)
 623 {
 624         char *data = (char *)(lr + 1);  /* data follows lr_write_t */
 625         znode_t *zp;
 626         int error;
 627         ssize_t resid;
 628
 629         if (byteswap)
 630                 byteswap_uint64_array(lr, sizeof (*lr));
 631
 632         if ((error = zfs_zget(zfsvfs, lr->lr_foid, &zp)) != 0) {
 633                 /*
 634                  * As we can log writes out of order, it's possible the
 635                  * file has been removed. In this case just drop the write
 636                  * and return success.
 637                  */
 638                 if (error == ENOENT)
 639                         error = 0;
 640                 return (error);
 641         }
 642
 643         error = vn_rdwr(UIO_WRITE, ZTOV(zp), data, lr->lr_length,
 644             lr->lr_offset, UIO_SYSSPACE, 0, RLIM64_INFINITY, kcred, &resid);
 645
 646         VN_RELE(ZTOV(zp));
 647
 648         return (error);
 649 }
 650
 651 static int
 652 zfs_replay_truncate(zfsvfs_t *zfsvfs, lr_truncate_t *lr, boolean_t byteswap)
 653 {
 654         znode_t *zp;
 655         flock64_t fl;
 656         int error;
 657
 658         if (byteswap)
 659                 byteswap_uint64_array(lr, sizeof (*lr));
 660
 661         if ((error = zfs_zget(zfsvfs, lr->lr_foid, &zp)) != 0) {
 662                 /*
 663                  * As we can log truncates out of order, it's possible the
 664                  * file has been removed. In this case just drop the truncate
 665                  * and return success.
 666                  */
 667                 if (error == ENOENT)
 668                         error = 0;
 669                 return (error);
 670         }
 671
 672         bzero(&fl, sizeof (fl));
 673         fl.l_type = F_WRLCK;
 674         fl.l_whence = 0;
 675         fl.l_start = lr->lr_offset;
 676         fl.l_len = lr->lr_length;
 677
 678         error = VOP_SPACE(ZTOV(zp), F_FREESP, &fl, FWRITE | FOFFMAX,
 679             lr->lr_offset, kcred, NULL);
 680
 681         VN_RELE(ZTOV(zp));
 682
 683         return (error);
 684 }
 685
 686 static int
 687 zfs_replay_setattr(zfsvfs_t *zfsvfs, lr_setattr_t *lr, boolean_t byteswap)
 688 {
 689         znode_t *zp;
 690         xvattr_t xva;
 691         vattr_t *vap = &xva.xva_vattr;
 692         int error;
 693         void *start;
 694
 695         xva_init(&xva);
 696         if (byteswap) {
 697                 byteswap_uint64_array(lr, sizeof (*lr));
 698
 699                 if ((lr->lr_mask & AT_XVATTR) &&
 700                     zfsvfs->z_version >= ZPL_VERSION_INITIAL)
 701                         zfs_replay_swap_attrs((lr_attr_t *)(lr + 1));
 702         }
 703
 704         if ((error = zfs_zget(zfsvfs, lr->lr_foid, &zp)) != 0) {
 705                 /*
 706                  * As we can log setattrs out of order, it's possible the
 707                  * file has been removed. In this case just drop the setattr
 708                  * and return success.
 709                  */
 710                 if (error == ENOENT)
 711                         error = 0;
 712                 return (error);
 713         }
 714
 715         zfs_init_vattr(vap, lr->lr_mask, lr->lr_mode,
 716             lr->lr_uid, lr->lr_gid, 0, lr->lr_foid);
 717
 718         vap->va_size = lr->lr_size;
 719         ZFS_TIME_DECODE(&vap->va_atime, lr->lr_atime);
 720         ZFS_TIME_DECODE(&vap->va_mtime, lr->lr_mtime);
 721
 722         /*
 723          * Fill in xvattr_t portions if necessary.
 724          */
 725
 726         start = (lr_setattr_t *)(lr + 1);
 727         if (vap->va_mask & AT_XVATTR) {
 728                 zfs_replay_xvattr((lr_attr_t *)start, &xva);
 729                 start = (caddr_t)start +
 730                     ZIL_XVAT_SIZE(((lr_attr_t *)start)->lr_attr_masksize);
 731         } else
 732                 xva.xva_vattr.va_mask &= ~AT_XVATTR;
 733
 734         zfsvfs->z_fuid_replay = zfs_replay_fuid_domain(start, &start,
 735             lr->lr_uid, lr->lr_gid);
 736
 737         error = VOP_SETATTR(ZTOV(zp), vap, 0, kcred, NULL);
 738
 739         zfs_fuid_info_free(zfsvfs->z_fuid_replay);
 740         zfsvfs->z_fuid_replay = NULL;
 741         VN_RELE(ZTOV(zp));
 742
 743         return (error);
 744 }
 745
 746 static int
 747 zfs_replay_acl_v0(zfsvfs_t *zfsvfs, lr_acl_v0_t *lr, boolean_t byteswap)
 748 {
 749         ace_t *ace = (ace_t *)(lr + 1); /* ace array follows lr_acl_t */
 750         vsecattr_t vsa;
 751         znode_t *zp;
 752         int error;
 753
 754         if (byteswap) {
 755                 byteswap_uint64_array(lr, sizeof (*lr));
 756                 zfs_oldace_byteswap(ace, lr->lr_aclcnt);
 757         }
 758
 759         if ((error = zfs_zget(zfsvfs, lr->lr_foid, &zp)) != 0) {
 760                 /*
 761                  * As we can log acls out of order, it's possible the
 762                  * file has been removed. In this case just drop the acl
 763                  * and return success.
 764                  */
 765                 if (error == ENOENT)
 766                         error = 0;
 767                 return (error);
 768         }
 769
 770         bzero(&vsa, sizeof (vsa));
 771         vsa.vsa_mask = VSA_ACE | VSA_ACECNT;
 772         vsa.vsa_aclcnt = lr->lr_aclcnt;
 773         vsa.vsa_aclentp = ace;
 774
 775         error = VOP_SETSECATTR(ZTOV(zp), &vsa, 0, kcred, NULL);
 776
 777         VN_RELE(ZTOV(zp));
 778
 779         return (error);
 780 }
 781
 782 /*
 783  * Replaying ACLs is complicated by FUID support.
 784  * The log record may contain some optional data
 785  * to be used for replaying FUID's.  These pieces
 786  * are the actual FUIDs that were created initially.
 787  * The FUID table index may no longer be valid and
 788  * during zfs_create() a new index may be assigned.
 789  * Because of this the log will contain the original
 790  * doman+rid in order to create a new FUID.
 791  *
 792  * The individual ACEs may contain an ephemeral uid/gid which is no
 793  * longer valid and will need to be replaced with an actual FUID.
 794  *
 795  */
 796 static int
 797 zfs_replay_acl(zfsvfs_t *zfsvfs, lr_acl_t *lr, boolean_t byteswap)
 798 {
 799         ace_t *ace = (ace_t *)(lr + 1);
 800         vsecattr_t vsa;
 801         znode_t *zp;
 802         int error;
 803
 804         if (byteswap) {
 805                 byteswap_uint64_array(lr, sizeof (*lr));
 806                 zfs_ace_byteswap(ace, lr->lr_acl_bytes, B_FALSE);
 807                 if (lr->lr_fuidcnt) {
 808                         byteswap_uint64_array((caddr_t)ace +
 809                             ZIL_ACE_LENGTH(lr->lr_acl_bytes),
 810                             lr->lr_fuidcnt * sizeof (uint64_t));
 811                 }
 812         }
 813
 814         if ((error = zfs_zget(zfsvfs, lr->lr_foid, &zp)) != 0) {
 815                 /*
 816                  * As we can log acls out of order, it's possible the
 817                  * file has been removed. In this case just drop the acl
 818                  * and return success.
 819                  */
 820                 if (error == ENOENT)
 821                         error = 0;
 822                 return (error);
 823         }
 824
 825         bzero(&vsa, sizeof (vsa));
 826         vsa.vsa_mask = VSA_ACE | VSA_ACECNT | VSA_ACE_ACLFLAGS;
 827         vsa.vsa_aclcnt = lr->lr_aclcnt;
 828         vsa.vsa_aclentp = ace;
 829         vsa.vsa_aclentsz = lr->lr_acl_bytes;
 830         vsa.vsa_aclflags = lr->lr_acl_flags;
 831
 832         if (lr->lr_fuidcnt) {
 833                 void *fuidstart = (caddr_t)ace +
 834                     ZIL_ACE_LENGTH(lr->lr_acl_bytes);
 835
 836                 zfsvfs->z_fuid_replay =
 837                     zfs_replay_fuids(fuidstart, &fuidstart,
 838                     lr->lr_fuidcnt, lr->lr_domcnt, 0, 0);
 839         }
 840
 841         error = VOP_SETSECATTR(ZTOV(zp), &vsa, 0, kcred, NULL);
 842
 843         if (zfsvfs->z_fuid_replay)
 844                 zfs_fuid_info_free(zfsvfs->z_fuid_replay);
 845
 846         zfsvfs->z_fuid_replay = NULL;
 847         VN_RELE(ZTOV(zp));
 848
 849         return (error);
 850 }
 851
 852 /*
 853  * Callback vectors for replaying records
 854  */
 855 zil_replay_func_t *zfs_replay_vector[TX_MAX_TYPE] = {
 856         zfs_replay_error,       /* 0 no such transaction type */
 857         zfs_replay_create,      /* TX_CREATE */
 858         zfs_replay_create,      /* TX_MKDIR */
 859         zfs_replay_create,      /* TX_MKXATTR */
 860         zfs_replay_create,      /* TX_SYMLINK */
 861         zfs_replay_remove,      /* TX_REMOVE */
 862         zfs_replay_remove,      /* TX_RMDIR */
 863         zfs_replay_link,        /* TX_LINK */
 864         zfs_replay_rename,      /* TX_RENAME */
 865         zfs_replay_write,       /* TX_WRITE */
 866         zfs_replay_truncate,    /* TX_TRUNCATE */
 867         zfs_replay_setattr,     /* TX_SETATTR */
 868         zfs_replay_acl_v0,      /* TX_ACL_V0 */
 869         zfs_replay_acl,         /* TX_ACL */
 870         zfs_replay_create_acl,  /* TX_CREATE_ACL */
 871         zfs_replay_create,      /* TX_CREATE_ATTR */
 872         zfs_replay_create_acl,  /* TX_CREATE_ACL_ATTR */
 873         zfs_replay_create_acl,  /* TX_MKDIR_ACL */
 874         zfs_replay_create,      /* TX_MKDIR_ATTR */
 875         zfs_replay_create_acl,  /* TX_MKDIR_ACL_ATTR */
 876 };