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 2007 Sun Microsystems, Inc. All rights reserved. 23 * Use is subject to license terms. 24 */ 25 26 #pragma ident "@(#)zfs_replay.c 1.6 07/11/07 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 error = VOP_CREATE(ZTOV(dzp), name, &xva.xva_vattr, 351 0, 0, &vp, kcred, vflg, NULL, &vsec); 352 break; 353 case TX_MKDIR_ACL: 354 aclstart = (caddr_t)(lracl + 1); 355 fuidstart = (caddr_t)aclstart + 356 ZIL_ACE_LENGTH(lracl->lr_acl_bytes); 357 zfsvfs->z_fuid_replay = zfs_replay_fuids(fuidstart, 358 (void *)&name, lracl->lr_fuidcnt, lracl->lr_domcnt, 359 lr->lr_uid, lr->lr_gid); 360 /*FALLTHROUGH*/ 361 case TX_MKDIR_ACL_ATTR: 362 if (name == NULL) { 363 lrattr = (lr_attr_t *)(caddr_t)(lracl + 1); 364 xvatlen = ZIL_XVAT_SIZE(lrattr->lr_attr_masksize); 365 zfs_replay_xvattr(lrattr, &xva); 366 } 367 vsec.vsa_mask = VSA_ACE | VSA_ACE_ACLFLAGS; 368 vsec.vsa_aclentp = (caddr_t)(lracl + 1) + xvatlen; 369 vsec.vsa_aclcnt = lracl->lr_aclcnt; 370 vsec.vsa_aclentsz = lracl->lr_acl_bytes; 371 vsec.vsa_aclflags = lracl->lr_acl_flags; 372 if (zfsvfs->z_fuid_replay == NULL) 373 fuidstart = (caddr_t)(lracl + 1) + xvatlen + 374 ZIL_ACE_LENGTH(lracl->lr_acl_bytes); 375 zfsvfs->z_fuid_replay = 376 zfs_replay_fuids(fuidstart, 377 (void *)&name, lracl->lr_fuidcnt, lracl->lr_domcnt, 378 lr->lr_uid, lr->lr_gid); 379 error = VOP_MKDIR(ZTOV(dzp), name, &xva.xva_vattr, 380 &vp, kcred, NULL, vflg, &vsec); 381 break; 382 default: 383 error = ENOTSUP; 384 } 385 386 bail: 387 if (error == 0 && vp != NULL) 388 VN_RELE(vp); 389 390 VN_RELE(ZTOV(dzp)); 391 392 zfs_fuid_info_free(zfsvfs->z_fuid_replay); 393 zfsvfs->z_fuid_replay = NULL; 394 395 return (error); 396 } 397 398 static int 399 zfs_replay_create(zfsvfs_t *zfsvfs, lr_create_t *lr, boolean_t byteswap) 400 { 401 char *name = NULL; /* location determined later */ 402 char *link; /* symlink content follows name */ 403 znode_t *dzp; 404 vnode_t *vp = NULL; 405 xvattr_t xva; 406 int vflg = 0; 407 size_t lrsize = sizeof (lr_create_t); 408 lr_attr_t *lrattr; 409 void *start; 410 size_t xvatlen; 411 uint64_t txtype; 412 int error; 413 414 if (byteswap) { 415 byteswap_uint64_array(lr, sizeof (*lr)); 416 txtype = (int)lr->lr_common.lrc_txtype; 417 if (txtype == TX_CREATE_ATTR || txtype == TX_MKDIR_ATTR) 418 zfs_replay_swap_attrs((lr_attr_t *)(lr + 1)); 419 } 420 421 422 if ((error = zfs_zget(zfsvfs, lr->lr_doid, &dzp)) != 0) 423 return (error); 424 425 xva_init(&xva); 426 zfs_init_vattr(&xva.xva_vattr, AT_TYPE | AT_MODE | AT_UID | AT_GID, 427 lr->lr_mode, lr->lr_uid, lr->lr_gid, lr->lr_rdev, lr->lr_foid); 428 429 /* 430 * All forms of zfs create (create, mkdir, mkxattrdir, symlink) 431 * eventually end up in zfs_mknode(), which assigns the object's 432 * creation time and generation number. The generic VOP_CREATE() 433 * doesn't have either concept, so we smuggle the values inside 434 * the vattr's otherwise unused va_ctime and va_nblocks fields. 435 */ 436 ZFS_TIME_DECODE(&xva.xva_vattr.va_ctime, lr->lr_crtime); 437 xva.xva_vattr.va_nblocks = lr->lr_gen; 438 439 error = dmu_object_info(zfsvfs->z_os, lr->lr_foid, NULL); 440 if (error != ENOENT) 441 goto out; 442 443 if (lr->lr_common.lrc_txtype & TX_CI) 444 vflg |= FIGNORECASE; 445 446 /* 447 * Symlinks don't have fuid info, and CIFS never creates 448 * symlinks. 449 * 450 * The _ATTR versions will grab the fuid info in their subcases. 451 */ 452 if ((int)lr->lr_common.lrc_txtype != TX_SYMLINK && 453 (int)lr->lr_common.lrc_txtype != TX_MKDIR_ATTR && 454 (int)lr->lr_common.lrc_txtype != TX_CREATE_ATTR) { 455 start = (lr + 1); 456 zfsvfs->z_fuid_replay = 457 zfs_replay_fuid_domain(start, &start, 458 lr->lr_uid, lr->lr_gid); 459 } 460 461 switch ((int)lr->lr_common.lrc_txtype) { 462 case TX_CREATE_ATTR: 463 lrattr = (lr_attr_t *)(caddr_t)(lr + 1); 464 xvatlen = ZIL_XVAT_SIZE(lrattr->lr_attr_masksize); 465 zfs_replay_xvattr((lr_attr_t *)((caddr_t)lr + lrsize), &xva); 466 start = (caddr_t)(lr + 1) + xvatlen; 467 zfsvfs->z_fuid_replay = 468 zfs_replay_fuid_domain(start, &start, 469 lr->lr_uid, lr->lr_gid); 470 name = (char *)start; 471 472 /*FALLTHROUGH*/ 473 case TX_CREATE: 474 if (name == NULL) 475 name = (char *)start; 476 477 error = VOP_CREATE(ZTOV(dzp), name, &xva.xva_vattr, 478 0, 0, &vp, kcred, vflg, NULL, NULL); 479 break; 480 case TX_MKDIR_ATTR: 481 lrattr = (lr_attr_t *)(caddr_t)(lr + 1); 482 xvatlen = ZIL_XVAT_SIZE(lrattr->lr_attr_masksize); 483 zfs_replay_xvattr((lr_attr_t *)((caddr_t)lr + lrsize), &xva); 484 start = (caddr_t)(lr + 1) + xvatlen; 485 zfsvfs->z_fuid_replay = 486 zfs_replay_fuid_domain(start, &start, 487 lr->lr_uid, lr->lr_gid); 488 name = (char *)start; 489 490 /*FALLTHROUGH*/ 491 case TX_MKDIR: 492 if (name == NULL) 493 name = (char *)(lr + 1); 494 495 error = VOP_MKDIR(ZTOV(dzp), name, &xva.xva_vattr, 496 &vp, kcred, NULL, vflg, NULL); 497 break; 498 case TX_MKXATTR: 499 name = (char *)(lr + 1); 500 error = zfs_make_xattrdir(dzp, &xva.xva_vattr, &vp, kcred); 501 break; 502 case TX_SYMLINK: 503 name = (char *)(lr + 1); 504 link = name + strlen(name) + 1; 505 error = VOP_SYMLINK(ZTOV(dzp), name, &xva.xva_vattr, 506 link, kcred, NULL, vflg); 507 break; 508 default: 509 error = ENOTSUP; 510 } 511 512 out: 513 if (error == 0 && vp != NULL) 514 VN_RELE(vp); 515 516 VN_RELE(ZTOV(dzp)); 517 518 if (zfsvfs->z_fuid_replay) 519 zfs_fuid_info_free(zfsvfs->z_fuid_replay); 520 zfsvfs->z_fuid_replay = NULL; 521 return (error); 522 } 523 524 static int 525 zfs_replay_remove(zfsvfs_t *zfsvfs, lr_remove_t *lr, boolean_t byteswap) 526 { 527 char *name = (char *)(lr + 1); /* name follows lr_remove_t */ 528 znode_t *dzp; 529 int error; 530 int vflg = 0; 531 532 if (byteswap) 533 byteswap_uint64_array(lr, sizeof (*lr)); 534 535 if ((error = zfs_zget(zfsvfs, lr->lr_doid, &dzp)) != 0) 536 return (error); 537 538 if (lr->lr_common.lrc_txtype & TX_CI) 539 vflg |= FIGNORECASE; 540 541 switch ((int)lr->lr_common.lrc_txtype) { 542 case TX_REMOVE: 543 error = VOP_REMOVE(ZTOV(dzp), name, kcred, NULL, vflg); 544 break; 545 case TX_RMDIR: 546 error = VOP_RMDIR(ZTOV(dzp), name, NULL, kcred, NULL, vflg); 547 break; 548 default: 549 error = ENOTSUP; 550 } 551 552 VN_RELE(ZTOV(dzp)); 553 554 return (error); 555 } 556 557 static int 558 zfs_replay_link(zfsvfs_t *zfsvfs, lr_link_t *lr, boolean_t byteswap) 559 { 560 char *name = (char *)(lr + 1); /* name follows lr_link_t */ 561 znode_t *dzp, *zp; 562 int error; 563 int vflg = 0; 564 565 if (byteswap) 566 byteswap_uint64_array(lr, sizeof (*lr)); 567 568 if ((error = zfs_zget(zfsvfs, lr->lr_doid, &dzp)) != 0) 569 return (error); 570 571 if ((error = zfs_zget(zfsvfs, lr->lr_link_obj, &zp)) != 0) { 572 VN_RELE(ZTOV(dzp)); 573 return (error); 574 } 575 576 if (lr->lr_common.lrc_txtype & TX_CI) 577 vflg |= FIGNORECASE; 578 579 error = VOP_LINK(ZTOV(dzp), ZTOV(zp), name, kcred, NULL, vflg); 580 581 VN_RELE(ZTOV(zp)); 582 VN_RELE(ZTOV(dzp)); 583 584 return (error); 585 } 586 587 static int 588 zfs_replay_rename(zfsvfs_t *zfsvfs, lr_rename_t *lr, boolean_t byteswap) 589 { 590 char *sname = (char *)(lr + 1); /* sname and tname follow lr_rename_t */ 591 char *tname = sname + strlen(sname) + 1; 592 znode_t *sdzp, *tdzp; 593 int error; 594 int vflg = 0; 595 596 if (byteswap) 597 byteswap_uint64_array(lr, sizeof (*lr)); 598 599 if ((error = zfs_zget(zfsvfs, lr->lr_sdoid, &sdzp)) != 0) 600 return (error); 601 602 if ((error = zfs_zget(zfsvfs, lr->lr_tdoid, &tdzp)) != 0) { 603 VN_RELE(ZTOV(sdzp)); 604 return (error); 605 } 606 607 if (lr->lr_common.lrc_txtype & TX_CI) 608 vflg |= FIGNORECASE; 609 610 error = VOP_RENAME(ZTOV(sdzp), sname, ZTOV(tdzp), tname, kcred, 611 NULL, vflg); 612 613 VN_RELE(ZTOV(tdzp)); 614 VN_RELE(ZTOV(sdzp)); 615 616 return (error); 617 } 618 619 static int 620 zfs_replay_write(zfsvfs_t *zfsvfs, lr_write_t *lr, boolean_t byteswap) 621 { 622 char *data = (char *)(lr + 1); /* data follows lr_write_t */ 623 znode_t *zp; 624 int error; 625 ssize_t resid; 626 627 if (byteswap) 628 byteswap_uint64_array(lr, sizeof (*lr)); 629 630 if ((error = zfs_zget(zfsvfs, lr->lr_foid, &zp)) != 0) { 631 /* 632 * As we can log writes out of order, it's possible the 633 * file has been removed. In this case just drop the write 634 * and return success. 635 */ 636 if (error == ENOENT) 637 error = 0; 638 return (error); 639 } 640 641 error = vn_rdwr(UIO_WRITE, ZTOV(zp), data, lr->lr_length, 642 lr->lr_offset, UIO_SYSSPACE, 0, RLIM64_INFINITY, kcred, &resid); 643 644 VN_RELE(ZTOV(zp)); 645 646 return (error); 647 } 648 649 static int 650 zfs_replay_truncate(zfsvfs_t *zfsvfs, lr_truncate_t *lr, boolean_t byteswap) 651 { 652 znode_t *zp; 653 flock64_t fl; 654 int error; 655 656 if (byteswap) 657 byteswap_uint64_array(lr, sizeof (*lr)); 658 659 if ((error = zfs_zget(zfsvfs, lr->lr_foid, &zp)) != 0) { 660 /* 661 * As we can log truncates out of order, it's possible the 662 * file has been removed. In this case just drop the truncate 663 * and return success. 664 */ 665 if (error == ENOENT) 666 error = 0; 667 return (error); 668 } 669 670 bzero(&fl, sizeof (fl)); 671 fl.l_type = F_WRLCK; 672 fl.l_whence = 0; 673 fl.l_start = lr->lr_offset; 674 fl.l_len = lr->lr_length; 675 676 error = VOP_SPACE(ZTOV(zp), F_FREESP, &fl, FWRITE | FOFFMAX, 677 lr->lr_offset, kcred, NULL); 678 679 VN_RELE(ZTOV(zp)); 680 681 return (error); 682 } 683 684 static int 685 zfs_replay_setattr(zfsvfs_t *zfsvfs, lr_setattr_t *lr, boolean_t byteswap) 686 { 687 znode_t *zp; 688 xvattr_t xva; 689 vattr_t *vap = &xva.xva_vattr; 690 int error; 691 void *start; 692 693 xva_init(&xva); 694 if (byteswap) { 695 byteswap_uint64_array(lr, sizeof (*lr)); 696 697 if ((lr->lr_mask & AT_XVATTR) && 698 zfsvfs->z_version >= ZPL_VERSION_INITIAL) 699 zfs_replay_swap_attrs((lr_attr_t *)(lr + 1)); 700 } 701 702 if ((error = zfs_zget(zfsvfs, lr->lr_foid, &zp)) != 0) { 703 /* 704 * As we can log setattrs out of order, it's possible the 705 * file has been removed. In this case just drop the setattr 706 * and return success. 707 */ 708 if (error == ENOENT) 709 error = 0; 710 return (error); 711 } 712 713 zfs_init_vattr(vap, lr->lr_mask, lr->lr_mode, 714 lr->lr_uid, lr->lr_gid, 0, lr->lr_foid); 715 716 vap->va_size = lr->lr_size; 717 ZFS_TIME_DECODE(&vap->va_atime, lr->lr_atime); 718 ZFS_TIME_DECODE(&vap->va_mtime, lr->lr_mtime); 719 720 /* 721 * Fill in xvattr_t portions if necessary. 722 */ 723 724 start = (lr_setattr_t *)(lr + 1); 725 if (vap->va_mask & AT_XVATTR) { 726 zfs_replay_xvattr((lr_attr_t *)start, &xva); 727 start = (caddr_t)start + 728 ZIL_XVAT_SIZE(((lr_attr_t *)start)->lr_attr_masksize); 729 } else 730 xva.xva_vattr.va_mask &= ~AT_XVATTR; 731 732 zfsvfs->z_fuid_replay = zfs_replay_fuid_domain(start, &start, 733 lr->lr_uid, lr->lr_gid); 734 735 error = VOP_SETATTR(ZTOV(zp), vap, 0, kcred, NULL); 736 737 zfs_fuid_info_free(zfsvfs->z_fuid_replay); 738 zfsvfs->z_fuid_replay = NULL; 739 VN_RELE(ZTOV(zp)); 740 741 return (error); 742 } 743 744 static int 745 zfs_replay_acl_v0(zfsvfs_t *zfsvfs, lr_acl_v0_t *lr, boolean_t byteswap) 746 { 747 ace_t *ace = (ace_t *)(lr + 1); /* ace array follows lr_acl_t */ 748 vsecattr_t vsa; 749 znode_t *zp; 750 int error; 751 752 if (byteswap) { 753 byteswap_uint64_array(lr, sizeof (*lr)); 754 zfs_oldace_byteswap(ace, lr->lr_aclcnt); 755 } 756 757 if ((error = zfs_zget(zfsvfs, lr->lr_foid, &zp)) != 0) { 758 /* 759 * As we can log acls out of order, it's possible the 760 * file has been removed. In this case just drop the acl 761 * and return success. 762 */ 763 if (error == ENOENT) 764 error = 0; 765 return (error); 766 } 767 768 bzero(&vsa, sizeof (vsa)); 769 vsa.vsa_mask = VSA_ACE | VSA_ACECNT; 770 vsa.vsa_aclcnt = lr->lr_aclcnt; 771 vsa.vsa_aclentp = ace; 772 773 error = VOP_SETSECATTR(ZTOV(zp), &vsa, 0, kcred, NULL); 774 775 VN_RELE(ZTOV(zp)); 776 777 return (error); 778 } 779 780 /* 781 * Replaying ACLs is complicated by FUID support. 782 * The log record may contain some optional data 783 * to be used for replaying FUID's. These pieces 784 * are the actual FUIDs that were created initially. 785 * The FUID table index may no longer be valid and 786 * during zfs_create() a new index may be assigned. 787 * Because of this the log will contain the original 788 * doman+rid in order to create a new FUID. 789 * 790 * The individual ACEs may contain an ephemeral uid/gid which is no 791 * longer valid and will need to be replaced with an actual FUID. 792 * 793 */ 794 static int 795 zfs_replay_acl(zfsvfs_t *zfsvfs, lr_acl_t *lr, boolean_t byteswap) 796 { 797 ace_t *ace = (ace_t *)(lr + 1); 798 vsecattr_t vsa; 799 znode_t *zp; 800 int error; 801 802 if (byteswap) { 803 byteswap_uint64_array(lr, sizeof (*lr)); 804 zfs_ace_byteswap(ace, lr->lr_acl_bytes, B_FALSE); 805 if (lr->lr_fuidcnt) { 806 byteswap_uint64_array((caddr_t)ace + 807 ZIL_ACE_LENGTH(lr->lr_acl_bytes), 808 lr->lr_fuidcnt * sizeof (uint64_t)); 809 } 810 } 811 812 if ((error = zfs_zget(zfsvfs, lr->lr_foid, &zp)) != 0) { 813 /* 814 * As we can log acls out of order, it's possible the 815 * file has been removed. In this case just drop the acl 816 * and return success. 817 */ 818 if (error == ENOENT) 819 error = 0; 820 return (error); 821 } 822 823 bzero(&vsa, sizeof (vsa)); 824 vsa.vsa_mask = VSA_ACE | VSA_ACECNT | VSA_ACE_ACLFLAGS; 825 vsa.vsa_aclcnt = lr->lr_aclcnt; 826 vsa.vsa_aclentp = ace; 827 vsa.vsa_aclentsz = lr->lr_acl_bytes; 828 vsa.vsa_aclflags = lr->lr_acl_flags; 829 830 if (lr->lr_fuidcnt) { 831 void *fuidstart = (caddr_t)ace + 832 ZIL_ACE_LENGTH(lr->lr_acl_bytes); 833 834 zfsvfs->z_fuid_replay = 835 zfs_replay_fuids(fuidstart, &fuidstart, 836 lr->lr_fuidcnt, lr->lr_domcnt, 0, 0); 837 } 838 839 error = VOP_SETSECATTR(ZTOV(zp), &vsa, 0, kcred, NULL); 840 841 if (zfsvfs->z_fuid_replay) 842 zfs_fuid_info_free(zfsvfs->z_fuid_replay); 843 844 zfsvfs->z_fuid_replay = NULL; 845 VN_RELE(ZTOV(zp)); 846 847 return (error); 848 } 849 850 /* 851 * Callback vectors for replaying records 852 */ 853 zil_replay_func_t *zfs_replay_vector[TX_MAX_TYPE] = { 854 zfs_replay_error, /* 0 no such transaction type */ 855 zfs_replay_create, /* TX_CREATE */ 856 zfs_replay_create, /* TX_MKDIR */ 857 zfs_replay_create, /* TX_MKXATTR */ 858 zfs_replay_create, /* TX_SYMLINK */ 859 zfs_replay_remove, /* TX_REMOVE */ 860 zfs_replay_remove, /* TX_RMDIR */ 861 zfs_replay_link, /* TX_LINK */ 862 zfs_replay_rename, /* TX_RENAME */ 863 zfs_replay_write, /* TX_WRITE */ 864 zfs_replay_truncate, /* TX_TRUNCATE */ 865 zfs_replay_setattr, /* TX_SETATTR */ 866 zfs_replay_acl_v0, /* TX_ACL_V0 */ 867 zfs_replay_acl, /* TX_ACL */ 868 zfs_replay_create_acl, /* TX_CREATE_ACL */ 869 zfs_replay_create, /* TX_CREATE_ATTR */ 870 zfs_replay_create_acl, /* TX_CREATE_ACL_ATTR */ 871 zfs_replay_create_acl, /* TX_MKDIR_ACL */ 872 zfs_replay_create, /* TX_MKDIR_ATTR */ 873 zfs_replay_create_acl, /* TX_MKDIR_ACL_ATTR */ 874 }; 875
Indexes created Sun Nov 08 06:54:24 UTC 2009
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