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 * Copyright (c) 2013, 2015 by Delphix. All rights reserved. 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/file.h> 33 #include <sys/fcntl.h> 34 #include <sys/vfs.h> 35 #include <sys/fs/zfs.h> 36 #include <sys/zfs_znode.h> 37 #include <sys/zfs_dir.h> 38 #include <sys/zfs_acl.h> 39 #include <sys/zfs_fuid.h> 40 #include <sys/spa.h> 41 #include <sys/zil.h> 42 #include <sys/byteorder.h> 43 #include <sys/stat.h> 44 #include <sys/acl.h> 45 #include <sys/atomic.h> 46 #include <sys/cred.h> 47 #include <sys/namei.h> 48 49 /* 50 * Functions to replay ZFS intent log (ZIL) records 51 * The functions are called through a function vector (zfs_replay_vector) 52 * which is indexed by the transaction type. 53 */ 54 55 static void 56 zfs_init_vattr(vattr_t *vap, uint64_t mask, uint64_t mode, 57 uint64_t uid, uint64_t gid, uint64_t rdev, uint64_t nodeid) 58 { 59 VATTR_NULL(vap); 60 vap->va_mask = (uint_t)mask; 61 if (mask & AT_TYPE) 62 vap->va_type = IFTOVT(mode); 63 if (mask & AT_MODE) 64 vap->va_mode = mode & MODEMASK; 65 if (mask & AT_UID) 66 vap->va_uid = (uid_t)(IS_EPHEMERAL(uid)) ? -1 : uid; 67 if (mask & AT_GID) 68 vap->va_gid = (gid_t)(IS_EPHEMERAL(gid)) ? -1 : gid; 69 vap->va_rdev = zfs_cmpldev(rdev); 70 vap->va_nodeid = nodeid; 71 } 72 73 /* ARGSUSED */ 74 static int 75 zfs_replay_error(zfsvfs_t *zfsvfs, lr_t *lr, boolean_t byteswap) 76 { 77 return (SET_ERROR(ENOTSUP)); 78 } 79 80 static void 81 zfs_replay_xvattr(lr_attr_t *lrattr, xvattr_t *xvap) 82 { 83 xoptattr_t *xoap = NULL; 84 uint64_t *attrs; 85 uint64_t *crtime; 86 uint32_t *bitmap; 87 void *scanstamp; 88 int i; 89 90 xvap->xva_vattr.va_mask |= AT_XVATTR; 91 if ((xoap = xva_getxoptattr(xvap)) == NULL) { 92 xvap->xva_vattr.va_mask &= ~AT_XVATTR; /* shouldn't happen */ 93 return; 94 } 95 96 ASSERT(lrattr->lr_attr_masksize == xvap->xva_mapsize); 97 98 bitmap = &lrattr->lr_attr_bitmap; 99 for (i = 0; i != lrattr->lr_attr_masksize; i++, bitmap++) 100 xvap->xva_reqattrmap[i] = *bitmap; 101 102 attrs = (uint64_t *)(lrattr + lrattr->lr_attr_masksize - 1); 103 crtime = attrs + 1; 104 scanstamp = (caddr_t)(crtime + 2); 105 106 if (XVA_ISSET_REQ(xvap, XAT_HIDDEN)) 107 xoap->xoa_hidden = ((*attrs & XAT0_HIDDEN) != 0); 108 if (XVA_ISSET_REQ(xvap, XAT_SYSTEM)) 109 xoap->xoa_system = ((*attrs & XAT0_SYSTEM) != 0); 110 if (XVA_ISSET_REQ(xvap, XAT_ARCHIVE)) 111 xoap->xoa_archive = ((*attrs & XAT0_ARCHIVE) != 0); 112 if (XVA_ISSET_REQ(xvap, XAT_READONLY)) 113 xoap->xoa_readonly = ((*attrs & XAT0_READONLY) != 0); 114 if (XVA_ISSET_REQ(xvap, XAT_IMMUTABLE)) 115 xoap->xoa_immutable = ((*attrs & XAT0_IMMUTABLE) != 0); 116 if (XVA_ISSET_REQ(xvap, XAT_NOUNLINK)) 117 xoap->xoa_nounlink = ((*attrs & XAT0_NOUNLINK) != 0); 118 if (XVA_ISSET_REQ(xvap, XAT_APPENDONLY)) 119 xoap->xoa_appendonly = ((*attrs & XAT0_APPENDONLY) != 0); 120 if (XVA_ISSET_REQ(xvap, XAT_NODUMP)) 121 xoap->xoa_nodump = ((*attrs & XAT0_NODUMP) != 0); 122 if (XVA_ISSET_REQ(xvap, XAT_OPAQUE)) 123 xoap->xoa_opaque = ((*attrs & XAT0_OPAQUE) != 0); 124 if (XVA_ISSET_REQ(xvap, XAT_AV_MODIFIED)) 125 xoap->xoa_av_modified = ((*attrs & XAT0_AV_MODIFIED) != 0); 126 if (XVA_ISSET_REQ(xvap, XAT_AV_QUARANTINED)) 127 xoap->xoa_av_quarantined = 128 ((*attrs & XAT0_AV_QUARANTINED) != 0); 129 if (XVA_ISSET_REQ(xvap, XAT_CREATETIME)) 130 ZFS_TIME_DECODE(&xoap->xoa_createtime, crtime); 131 if (XVA_ISSET_REQ(xvap, XAT_AV_SCANSTAMP)) 132 bcopy(scanstamp, xoap->xoa_av_scanstamp, AV_SCANSTAMP_SZ); 133 if (XVA_ISSET_REQ(xvap, XAT_REPARSE)) 134 xoap->xoa_reparse = ((*attrs & XAT0_REPARSE) != 0); 135 if (XVA_ISSET_REQ(xvap, XAT_OFFLINE)) 136 xoap->xoa_offline = ((*attrs & XAT0_OFFLINE) != 0); 137 if (XVA_ISSET_REQ(xvap, XAT_SPARSE)) 138 xoap->xoa_sparse = ((*attrs & XAT0_SPARSE) != 0); 139 } 140 141 static int 142 zfs_replay_domain_cnt(uint64_t uid, uint64_t gid) 143 { 144 uint64_t uid_idx; 145 uint64_t gid_idx; 146 int domcnt = 0; 147 148 uid_idx = FUID_INDEX(uid); 149 gid_idx = FUID_INDEX(gid); 150 if (uid_idx) 151 domcnt++; 152 if (gid_idx > 0 && gid_idx != uid_idx) 153 domcnt++; 154 155 return (domcnt); 156 } 157 158 static void * 159 zfs_replay_fuid_domain_common(zfs_fuid_info_t *fuid_infop, void *start, 160 int domcnt) 161 { 162 int i; 163 164 for (i = 0; i != domcnt; i++) { 165 fuid_infop->z_domain_table[i] = start; 166 start = (caddr_t)start + strlen(start) + 1; 167 } 168 169 return (start); 170 } 171 172 /* 173 * Set the uid/gid in the fuid_info structure. 174 */ 175 static void 176 zfs_replay_fuid_ugid(zfs_fuid_info_t *fuid_infop, uint64_t uid, uint64_t gid) 177 { 178 /* 179 * If owner or group are log specific FUIDs then slurp up 180 * domain information and build zfs_fuid_info_t 181 */ 182 if (IS_EPHEMERAL(uid)) 183 fuid_infop->z_fuid_owner = uid; 184 185 if (IS_EPHEMERAL(gid)) 186 fuid_infop->z_fuid_group = gid; 187 } 188 189 /* 190 * Load fuid domains into fuid_info_t 191 */ 192 static zfs_fuid_info_t * 193 zfs_replay_fuid_domain(void *buf, void **end, uint64_t uid, uint64_t gid) 194 { 195 int domcnt; 196 197 zfs_fuid_info_t *fuid_infop; 198 199 fuid_infop = zfs_fuid_info_alloc(); 200 201 domcnt = zfs_replay_domain_cnt(uid, gid); 202 203 if (domcnt == 0) 204 return (fuid_infop); 205 206 fuid_infop->z_domain_table = 207 kmem_zalloc(domcnt * sizeof (char **), KM_SLEEP); 208 209 zfs_replay_fuid_ugid(fuid_infop, uid, gid); 210 211 fuid_infop->z_domain_cnt = domcnt; 212 *end = zfs_replay_fuid_domain_common(fuid_infop, buf, domcnt); 213 return (fuid_infop); 214 } 215 216 /* 217 * load zfs_fuid_t's and fuid_domains into fuid_info_t 218 */ 219 static zfs_fuid_info_t * 220 zfs_replay_fuids(void *start, void **end, int idcnt, int domcnt, uint64_t uid, 221 uint64_t gid) 222 { 223 uint64_t *log_fuid = (uint64_t *)start; 224 zfs_fuid_info_t *fuid_infop; 225 int i; 226 227 fuid_infop = zfs_fuid_info_alloc(); 228 fuid_infop->z_domain_cnt = domcnt; 229 230 fuid_infop->z_domain_table = 231 kmem_zalloc(domcnt * sizeof (char **), KM_SLEEP); 232 233 for (i = 0; i != idcnt; i++) { 234 zfs_fuid_t *zfuid; 235 236 zfuid = kmem_alloc(sizeof (zfs_fuid_t), KM_SLEEP); 237 zfuid->z_logfuid = *log_fuid; 238 zfuid->z_id = -1; 239 zfuid->z_domidx = 0; 240 list_insert_tail(&fuid_infop->z_fuids, zfuid); 241 log_fuid++; 242 } 243 244 zfs_replay_fuid_ugid(fuid_infop, uid, gid); 245 246 *end = zfs_replay_fuid_domain_common(fuid_infop, log_fuid, domcnt); 247 return (fuid_infop); 248 } 249 250 static void 251 zfs_replay_swap_attrs(lr_attr_t *lrattr) 252 { 253 /* swap the lr_attr structure */ 254 byteswap_uint32_array(lrattr, sizeof (*lrattr)); 255 /* swap the bitmap */ 256 byteswap_uint32_array(lrattr + 1, (lrattr->lr_attr_masksize - 1) * 257 sizeof (uint32_t)); 258 /* swap the attributes, create time + 64 bit word for attributes */ 259 byteswap_uint64_array((caddr_t)(lrattr + 1) + (sizeof (uint32_t) * 260 (lrattr->lr_attr_masksize - 1)), 3 * sizeof (uint64_t)); 261 } 262 263 /* 264 * Replay file create with optional ACL, xvattr information as well 265 * as option FUID information. 266 */ 267 static int 268 zfs_replay_create_acl(zfsvfs_t *zfsvfs, 269 lr_acl_create_t *lracl, boolean_t byteswap) 270 { 271 char *name = NULL; /* location determined later */ 272 lr_create_t *lr = (lr_create_t *)lracl; 273 znode_t *dzp; 274 vnode_t *vp = NULL; 275 xvattr_t xva; 276 int vflg = 0; 277 vsecattr_t vsec = { 0 }; 278 lr_attr_t *lrattr; 279 void *aclstart; 280 void *fuidstart; 281 size_t xvatlen = 0; 282 uint64_t txtype; 283 int error; 284 285 txtype = (lr->lr_common.lrc_txtype & ~TX_CI); 286 if (byteswap) { 287 byteswap_uint64_array(lracl, sizeof (*lracl)); 288 if (txtype == TX_CREATE_ACL_ATTR || 289 txtype == TX_MKDIR_ACL_ATTR) { 290 lrattr = (lr_attr_t *)(caddr_t)(lracl + 1); 291 zfs_replay_swap_attrs(lrattr); 292 xvatlen = ZIL_XVAT_SIZE(lrattr->lr_attr_masksize); 293 } 294 295 aclstart = (caddr_t)(lracl + 1) + xvatlen; 296 zfs_ace_byteswap(aclstart, lracl->lr_acl_bytes, B_FALSE); 297 /* swap fuids */ 298 if (lracl->lr_fuidcnt) { 299 byteswap_uint64_array((caddr_t)aclstart + 300 ZIL_ACE_LENGTH(lracl->lr_acl_bytes), 301 lracl->lr_fuidcnt * sizeof (uint64_t)); 302 } 303 } 304 305 if ((error = zfs_zget(zfsvfs, lr->lr_doid, &dzp)) != 0) 306 return (error); 307 308 xva_init(&xva); 309 zfs_init_vattr(&xva.xva_vattr, AT_TYPE | AT_MODE | AT_UID | AT_GID, 310 lr->lr_mode, lr->lr_uid, lr->lr_gid, lr->lr_rdev, lr->lr_foid); 311 312 /* 313 * All forms of zfs create (create, mkdir, mkxattrdir, symlink) 314 * eventually end up in zfs_mknode(), which assigns the object's 315 * creation time and generation number. The generic VOP_CREATE() 316 * doesn't have either concept, so we smuggle the values inside 317 * the vattr's otherwise unused va_ctime and va_nblocks fields. 318 */ 319 ZFS_TIME_DECODE(&xva.xva_vattr.va_ctime, lr->lr_crtime); 320 xva.xva_vattr.va_nblocks = lr->lr_gen; 321 322 error = dmu_object_info(zfsvfs->z_os, lr->lr_foid, NULL); 323 if (error != ENOENT) 324 goto bail; 325 326 if (lr->lr_common.lrc_txtype & TX_CI) 327 vflg |= FIGNORECASE; 328 switch (txtype) { 329 case TX_CREATE_ACL: 330 aclstart = (caddr_t)(lracl + 1); 331 fuidstart = (caddr_t)aclstart + 332 ZIL_ACE_LENGTH(lracl->lr_acl_bytes); 333 zfsvfs->z_fuid_replay = zfs_replay_fuids(fuidstart, 334 (void *)&name, lracl->lr_fuidcnt, lracl->lr_domcnt, 335 lr->lr_uid, lr->lr_gid); 336 /*FALLTHROUGH*/ 337 case TX_CREATE_ACL_ATTR: 338 if (name == NULL) { 339 lrattr = (lr_attr_t *)(caddr_t)(lracl + 1); 340 xvatlen = ZIL_XVAT_SIZE(lrattr->lr_attr_masksize); 341 xva.xva_vattr.va_mask |= AT_XVATTR; 342 zfs_replay_xvattr(lrattr, &xva); 343 } 344 vsec.vsa_mask = VSA_ACE | VSA_ACE_ACLFLAGS; 345 vsec.vsa_aclentp = (caddr_t)(lracl + 1) + xvatlen; 346 vsec.vsa_aclcnt = lracl->lr_aclcnt; 347 vsec.vsa_aclentsz = lracl->lr_acl_bytes; 348 vsec.vsa_aclflags = lracl->lr_acl_flags; 349 if (zfsvfs->z_fuid_replay == NULL) { 350 fuidstart = (caddr_t)(lracl + 1) + xvatlen + 351 ZIL_ACE_LENGTH(lracl->lr_acl_bytes); 352 zfsvfs->z_fuid_replay = 353 zfs_replay_fuids(fuidstart, 354 (void *)&name, lracl->lr_fuidcnt, lracl->lr_domcnt, 355 lr->lr_uid, lr->lr_gid); 356 } 357 358 #ifdef TODO 359 error = VOP_CREATE(ZTOV(dzp), name, &xva.xva_vattr, 360 0, 0, &vp, kcred, vflg, NULL, &vsec); 361 #else 362 panic("%s:%u: unsupported condition", __func__, __LINE__); 363 #endif 364 break; 365 case TX_MKDIR_ACL: 366 aclstart = (caddr_t)(lracl + 1); 367 fuidstart = (caddr_t)aclstart + 368 ZIL_ACE_LENGTH(lracl->lr_acl_bytes); 369 zfsvfs->z_fuid_replay = zfs_replay_fuids(fuidstart, 370 (void *)&name, lracl->lr_fuidcnt, lracl->lr_domcnt, 371 lr->lr_uid, lr->lr_gid); 372 /*FALLTHROUGH*/ 373 case TX_MKDIR_ACL_ATTR: 374 if (name == NULL) { 375 lrattr = (lr_attr_t *)(caddr_t)(lracl + 1); 376 xvatlen = ZIL_XVAT_SIZE(lrattr->lr_attr_masksize); 377 zfs_replay_xvattr(lrattr, &xva); 378 } 379 vsec.vsa_mask = VSA_ACE | VSA_ACE_ACLFLAGS; 380 vsec.vsa_aclentp = (caddr_t)(lracl + 1) + xvatlen; 381 vsec.vsa_aclcnt = lracl->lr_aclcnt; 382 vsec.vsa_aclentsz = lracl->lr_acl_bytes; 383 vsec.vsa_aclflags = lracl->lr_acl_flags; 384 if (zfsvfs->z_fuid_replay == NULL) { 385 fuidstart = (caddr_t)(lracl + 1) + xvatlen + 386 ZIL_ACE_LENGTH(lracl->lr_acl_bytes); 387 zfsvfs->z_fuid_replay = 388 zfs_replay_fuids(fuidstart, 389 (void *)&name, lracl->lr_fuidcnt, lracl->lr_domcnt, 390 lr->lr_uid, lr->lr_gid); 391 } 392 #ifdef TODO 393 error = VOP_MKDIR(ZTOV(dzp), name, &xva.xva_vattr, 394 &vp, kcred, NULL, vflg, &vsec); 395 #else 396 panic("%s:%u: unsupported condition", __func__, __LINE__); 397 #endif 398 break; 399 default: 400 error = SET_ERROR(ENOTSUP); 401 } 402 403 bail: 404 if (error == 0 && vp != NULL) 405 VN_RELE(vp); 406 407 VN_RELE(ZTOV(dzp)); 408 409 if (zfsvfs->z_fuid_replay) 410 zfs_fuid_info_free(zfsvfs->z_fuid_replay); 411 zfsvfs->z_fuid_replay = NULL; 412 413 return (error); 414 } 415 416 static int 417 zfs_replay_create(zfsvfs_t *zfsvfs, lr_create_t *lr, boolean_t byteswap) 418 { 419 char *name = NULL; /* location determined later */ 420 char *link; /* symlink content follows name */ 421 znode_t *dzp; 422 vnode_t *vp = NULL; 423 xvattr_t xva; 424 int vflg = 0; 425 size_t lrsize = sizeof (lr_create_t); 426 lr_attr_t *lrattr; 427 void *start; 428 size_t xvatlen; 429 uint64_t txtype; 430 struct componentname cn; 431 int error; 432 433 txtype = (lr->lr_common.lrc_txtype & ~TX_CI); 434 if (byteswap) { 435 byteswap_uint64_array(lr, sizeof (*lr)); 436 if (txtype == TX_CREATE_ATTR || txtype == TX_MKDIR_ATTR) 437 zfs_replay_swap_attrs((lr_attr_t *)(lr + 1)); 438 } 439 440 441 if ((error = zfs_zget(zfsvfs, lr->lr_doid, &dzp)) != 0) 442 return (error); 443 444 xva_init(&xva); 445 zfs_init_vattr(&xva.xva_vattr, AT_TYPE | AT_MODE | AT_UID | AT_GID, 446 lr->lr_mode, lr->lr_uid, lr->lr_gid, lr->lr_rdev, lr->lr_foid); 447 448 /* 449 * All forms of zfs create (create, mkdir, mkxattrdir, symlink) 450 * eventually end up in zfs_mknode(), which assigns the object's 451 * creation time and generation number. The generic VOP_CREATE() 452 * doesn't have either concept, so we smuggle the values inside 453 * the vattr's otherwise unused va_ctime and va_nblocks fields. 454 */ 455 ZFS_TIME_DECODE(&xva.xva_vattr.va_ctime, lr->lr_crtime); 456 xva.xva_vattr.va_nblocks = lr->lr_gen; 457 458 error = dmu_object_info(zfsvfs->z_os, lr->lr_foid, NULL); 459 if (error != ENOENT) 460 goto out; 461 462 if (lr->lr_common.lrc_txtype & TX_CI) 463 vflg |= FIGNORECASE; 464 465 /* 466 * Symlinks don't have fuid info, and CIFS never creates 467 * symlinks. 468 * 469 * The _ATTR versions will grab the fuid info in their subcases. 470 */ 471 if ((int)lr->lr_common.lrc_txtype != TX_SYMLINK && 472 (int)lr->lr_common.lrc_txtype != TX_MKDIR_ATTR && 473 (int)lr->lr_common.lrc_txtype != TX_CREATE_ATTR) { 474 start = (lr + 1); 475 zfsvfs->z_fuid_replay = 476 zfs_replay_fuid_domain(start, &start, 477 lr->lr_uid, lr->lr_gid); 478 } 479 480 cn.cn_cred = kcred; 481 #ifndef __NetBSD__ 482 cn.cn_thread = curthread; 483 cn.cn_flags = SAVENAME; 484 #endif 485 486 vn_lock(ZTOV(dzp), LK_EXCLUSIVE | LK_RETRY); 487 switch (txtype) { 488 case TX_CREATE_ATTR: 489 lrattr = (lr_attr_t *)(caddr_t)(lr + 1); 490 xvatlen = ZIL_XVAT_SIZE(lrattr->lr_attr_masksize); 491 zfs_replay_xvattr((lr_attr_t *)((caddr_t)lr + lrsize), &xva); 492 start = (caddr_t)(lr + 1) + xvatlen; 493 zfsvfs->z_fuid_replay = 494 zfs_replay_fuid_domain(start, &start, 495 lr->lr_uid, lr->lr_gid); 496 name = (char *)start; 497 498 /*FALLTHROUGH*/ 499 case TX_CREATE: 500 if (name == NULL) 501 name = (char *)start; 502 503 cn.cn_nameptr = name; 504 #ifdef __NetBSD__ 505 cn.cn_namelen = strlen(name); 506 #endif 507 error = VOP_CREATE(ZTOV(dzp), &vp, &cn, &xva.xva_vattr /*,vflg*/); 508 break; 509 case TX_MKDIR_ATTR: 510 lrattr = (lr_attr_t *)(caddr_t)(lr + 1); 511 xvatlen = ZIL_XVAT_SIZE(lrattr->lr_attr_masksize); 512 zfs_replay_xvattr((lr_attr_t *)((caddr_t)lr + lrsize), &xva); 513 start = (caddr_t)(lr + 1) + xvatlen; 514 zfsvfs->z_fuid_replay = 515 zfs_replay_fuid_domain(start, &start, 516 lr->lr_uid, lr->lr_gid); 517 name = (char *)start; 518 519 /*FALLTHROUGH*/ 520 case TX_MKDIR: 521 if (name == NULL) 522 name = (char *)(lr + 1); 523 524 cn.cn_nameptr = name; 525 #ifdef __NetBSD__ 526 cn.cn_namelen = strlen(name); 527 #endif 528 error = VOP_MKDIR(ZTOV(dzp), &vp, &cn, &xva.xva_vattr /*,vflg*/); 529 break; 530 case TX_MKXATTR: 531 error = zfs_make_xattrdir(dzp, &xva.xva_vattr, &vp, kcred); 532 break; 533 case TX_SYMLINK: 534 name = (char *)(lr + 1); 535 link = name + strlen(name) + 1; 536 cn.cn_nameptr = name; 537 #ifdef __NetBSD__ 538 cn.cn_namelen = strlen(name); 539 #endif 540 error = VOP_SYMLINK(ZTOV(dzp), &vp, &cn, &xva.xva_vattr, link /*,vflg*/); 541 break; 542 default: 543 error = SET_ERROR(ENOTSUP); 544 } 545 VOP_UNLOCK(ZTOV(dzp), 0); 546 547 out: 548 if (error == 0 && vp != NULL) 549 #ifdef __NetBSD__ 550 VN_RELE(vp); 551 #else 552 VN_URELE(vp); 553 #endif 554 555 VN_RELE(ZTOV(dzp)); 556 557 if (zfsvfs->z_fuid_replay) 558 zfs_fuid_info_free(zfsvfs->z_fuid_replay); 559 zfsvfs->z_fuid_replay = NULL; 560 return (error); 561 } 562 563 static int 564 zfs_replay_remove(zfsvfs_t *zfsvfs, lr_remove_t *lr, boolean_t byteswap) 565 { 566 char *name = (char *)(lr + 1); /* name follows lr_remove_t */ 567 znode_t *dzp; 568 struct componentname cn; 569 vnode_t *vp; 570 int error; 571 int vflg = 0; 572 573 if (byteswap) 574 byteswap_uint64_array(lr, sizeof (*lr)); 575 576 if ((error = zfs_zget(zfsvfs, lr->lr_doid, &dzp)) != 0) 577 return (error); 578 579 if (lr->lr_common.lrc_txtype & TX_CI) 580 vflg |= FIGNORECASE; 581 cn.cn_nameptr = name; 582 cn.cn_namelen = strlen(name); 583 cn.cn_nameiop = DELETE; 584 cn.cn_flags = ISLASTCN | SAVENAME; 585 cn.cn_cred = kcred; 586 #ifndef __NetBSD__ 587 cn.cn_lkflags = LK_EXCLUSIVE | LK_RETRY; 588 cn.cn_thread = curthread; 589 #endif 590 vn_lock(ZTOV(dzp), LK_EXCLUSIVE | LK_RETRY); 591 error = VOP_LOOKUP(ZTOV(dzp), &vp, &cn); 592 if (error != 0) { 593 VOP_UNLOCK(ZTOV(dzp), 0); 594 goto fail; 595 } 596 #ifdef __NetBSD__ 597 vn_lock(vp, LK_EXCLUSIVE | LK_RETRY); 598 #endif 599 600 switch ((int)lr->lr_common.lrc_txtype) { 601 case TX_REMOVE: 602 error = VOP_REMOVE(ZTOV(dzp), vp, &cn /*,vflg*/); 603 break; 604 case TX_RMDIR: 605 error = VOP_RMDIR(ZTOV(dzp), vp, &cn /*,vflg*/); 606 break; 607 default: 608 #ifdef __NetBSD__ 609 vput(vp); 610 #endif 611 error = SET_ERROR(ENOTSUP); 612 } 613 #ifndef __NetBSD__ 614 vput(vp); 615 #endif 616 VOP_UNLOCK(ZTOV(dzp), 0); 617 618 fail: 619 VN_RELE(ZTOV(dzp)); 620 621 return (error); 622 } 623 624 static int 625 zfs_replay_link(zfsvfs_t *zfsvfs, lr_link_t *lr, boolean_t byteswap) 626 { 627 char *name = (char *)(lr + 1); /* name follows lr_link_t */ 628 znode_t *dzp, *zp; 629 struct componentname cn; 630 int error; 631 int vflg = 0; 632 633 if (byteswap) 634 byteswap_uint64_array(lr, sizeof (*lr)); 635 636 if ((error = zfs_zget(zfsvfs, lr->lr_doid, &dzp)) != 0) 637 return (error); 638 639 if ((error = zfs_zget(zfsvfs, lr->lr_link_obj, &zp)) != 0) { 640 VN_RELE(ZTOV(dzp)); 641 return (error); 642 } 643 644 if (lr->lr_common.lrc_txtype & TX_CI) 645 vflg |= FIGNORECASE; 646 647 cn.cn_nameptr = name; 648 #ifdef __NetBSD__ 649 cn.cn_namelen = strlen(name); 650 #endif 651 cn.cn_cred = kcred; 652 #ifndef __NetBSD__ 653 cn.cn_thread = curthread; 654 cn.cn_flags = SAVENAME; 655 #endif 656 657 vn_lock(ZTOV(dzp), LK_EXCLUSIVE | LK_RETRY); 658 #ifndef __NetBSD__ 659 vn_lock(ZTOV(zp), LK_EXCLUSIVE | LK_RETRY); 660 #endif 661 error = VOP_LINK(ZTOV(dzp), ZTOV(zp), &cn /*,vflg*/); 662 #ifndef __NetBSD__ 663 VOP_UNLOCK(ZTOV(zp), 0); 664 #endif 665 VOP_UNLOCK(ZTOV(dzp), 0); 666 667 VN_RELE(ZTOV(zp)); 668 VN_RELE(ZTOV(dzp)); 669 670 return (error); 671 } 672 673 static int 674 zfs_replay_rename(zfsvfs_t *zfsvfs, lr_rename_t *lr, boolean_t byteswap) 675 { 676 char *sname = (char *)(lr + 1); /* sname and tname follow lr_rename_t */ 677 char *tname = sname + strlen(sname) + 1; 678 znode_t *sdzp, *tdzp; 679 struct componentname scn, tcn; 680 vnode_t *svp, *tvp; 681 kthread_t *td = curthread; 682 int error; 683 int vflg = 0; 684 685 if (byteswap) 686 byteswap_uint64_array(lr, sizeof (*lr)); 687 688 if ((error = zfs_zget(zfsvfs, lr->lr_sdoid, &sdzp)) != 0) 689 return (error); 690 691 if ((error = zfs_zget(zfsvfs, lr->lr_tdoid, &tdzp)) != 0) { 692 VN_RELE(ZTOV(sdzp)); 693 return (error); 694 } 695 696 if (lr->lr_common.lrc_txtype & TX_CI) 697 vflg |= FIGNORECASE; 698 svp = tvp = NULL; 699 700 scn.cn_nameptr = sname; 701 scn.cn_namelen = strlen(sname); 702 scn.cn_nameiop = DELETE; 703 scn.cn_flags = ISLASTCN | SAVENAME; 704 scn.cn_cred = kcred; 705 #ifndef __NetBSD__ 706 scn.cn_lkflags = LK_EXCLUSIVE | LK_RETRY; 707 scn.cn_thread = td; 708 #endif 709 vn_lock(ZTOV(sdzp), LK_EXCLUSIVE | LK_RETRY); 710 error = VOP_LOOKUP(ZTOV(sdzp), &svp, &scn); 711 VOP_UNLOCK(ZTOV(sdzp), 0); 712 if (error != 0) 713 goto fail; 714 #ifndef __NetBSD__ 715 VOP_UNLOCK(svp, 0); 716 #endif 717 718 tcn.cn_nameptr = tname; 719 tcn.cn_namelen = strlen(tname); 720 tcn.cn_nameiop = RENAME; 721 tcn.cn_flags = ISLASTCN | SAVENAME; 722 tcn.cn_cred = kcred; 723 #ifndef __NetBSD__ 724 tcn.cn_lkflags = LK_EXCLUSIVE | LK_RETRY; 725 tcn.cn_thread = td; 726 #endif 727 vn_lock(ZTOV(tdzp), LK_EXCLUSIVE | LK_RETRY); 728 error = VOP_LOOKUP(ZTOV(tdzp), &tvp, &tcn); 729 if (error == EJUSTRETURN) 730 tvp = NULL; 731 else if (error != 0) { 732 VOP_UNLOCK(ZTOV(tdzp), 0); 733 goto fail; 734 } 735 #ifdef __NetBSD__ 736 if (tvp != NULL) 737 vn_lock(tvp, LK_EXCLUSIVE | LK_RETRY); 738 #endif 739 740 error = VOP_RENAME(ZTOV(sdzp), svp, &scn, ZTOV(tdzp), tvp, &tcn /*,vflg*/); 741 return (error); 742 fail: 743 if (svp != NULL) 744 vrele(svp); 745 if (tvp != NULL) 746 vrele(tvp); 747 VN_RELE(ZTOV(tdzp)); 748 VN_RELE(ZTOV(sdzp)); 749 750 return (error); 751 } 752 753 static int 754 zfs_replay_write(zfsvfs_t *zfsvfs, lr_write_t *lr, boolean_t byteswap) 755 { 756 char *data = (char *)(lr + 1); /* data follows lr_write_t */ 757 znode_t *zp; 758 int error; 759 ssize_t resid; 760 uint64_t eod, offset, length; 761 762 if (byteswap) 763 byteswap_uint64_array(lr, sizeof (*lr)); 764 765 if ((error = zfs_zget(zfsvfs, lr->lr_foid, &zp)) != 0) { 766 /* 767 * As we can log writes out of order, it's possible the 768 * file has been removed. In this case just drop the write 769 * and return success. 770 */ 771 if (error == ENOENT) 772 error = 0; 773 return (error); 774 } 775 776 offset = lr->lr_offset; 777 length = lr->lr_length; 778 eod = offset + length; /* end of data for this write */ 779 780 /* 781 * This may be a write from a dmu_sync() for a whole block, 782 * and may extend beyond the current end of the file. 783 * We can't just replay what was written for this TX_WRITE as 784 * a future TX_WRITE2 may extend the eof and the data for that 785 * write needs to be there. So we write the whole block and 786 * reduce the eof. This needs to be done within the single dmu 787 * transaction created within vn_rdwr -> zfs_write. So a possible 788 * new end of file is passed through in zfsvfs->z_replay_eof 789 */ 790 791 zfsvfs->z_replay_eof = 0; /* 0 means don't change end of file */ 792 793 /* If it's a dmu_sync() block, write the whole block */ 794 if (lr->lr_common.lrc_reclen == sizeof (lr_write_t)) { 795 uint64_t blocksize = BP_GET_LSIZE(&lr->lr_blkptr); 796 if (length < blocksize) { 797 offset -= offset % blocksize; 798 length = blocksize; 799 } 800 if (zp->z_size < eod) 801 zfsvfs->z_replay_eof = eod; 802 } 803 804 error = vn_rdwr(UIO_WRITE, ZTOV(zp), data, length, offset, 805 UIO_SYSSPACE, 0, RLIM64_INFINITY, kcred, &resid); 806 807 VN_RELE(ZTOV(zp)); 808 zfsvfs->z_replay_eof = 0; /* safety */ 809 810 return (error); 811 } 812 813 /* 814 * TX_WRITE2 are only generated when dmu_sync() returns EALREADY 815 * meaning the pool block is already being synced. So now that we always write 816 * out full blocks, all we have to do is expand the eof if 817 * the file is grown. 818 */ 819 static int 820 zfs_replay_write2(zfsvfs_t *zfsvfs, lr_write_t *lr, boolean_t byteswap) 821 { 822 znode_t *zp; 823 int error; 824 uint64_t end; 825 826 if (byteswap) 827 byteswap_uint64_array(lr, sizeof (*lr)); 828 829 if ((error = zfs_zget(zfsvfs, lr->lr_foid, &zp)) != 0) 830 return (error); 831 832 top: 833 end = lr->lr_offset + lr->lr_length; 834 if (end > zp->z_size) { 835 dmu_tx_t *tx = dmu_tx_create(zfsvfs->z_os); 836 837 zp->z_size = end; 838 dmu_tx_hold_sa(tx, zp->z_sa_hdl, B_FALSE); 839 error = dmu_tx_assign(tx, TXG_WAIT); 840 if (error) { 841 VN_RELE(ZTOV(zp)); 842 if (error == ERESTART) { 843 dmu_tx_wait(tx); 844 dmu_tx_abort(tx); 845 goto top; 846 } 847 dmu_tx_abort(tx); 848 return (error); 849 } 850 (void) sa_update(zp->z_sa_hdl, SA_ZPL_SIZE(zfsvfs), 851 (void *)&zp->z_size, sizeof (uint64_t), tx); 852 853 /* Ensure the replayed seq is updated */ 854 (void) zil_replaying(zfsvfs->z_log, tx); 855 856 dmu_tx_commit(tx); 857 } 858 859 VN_RELE(ZTOV(zp)); 860 861 return (error); 862 } 863 864 static int 865 zfs_replay_truncate(zfsvfs_t *zfsvfs, lr_truncate_t *lr, boolean_t byteswap) 866 { 867 #ifdef illumos 868 znode_t *zp; 869 flock64_t fl; 870 int error; 871 872 if (byteswap) 873 byteswap_uint64_array(lr, sizeof (*lr)); 874 875 if ((error = zfs_zget(zfsvfs, lr->lr_foid, &zp)) != 0) 876 return (error); 877 878 bzero(&fl, sizeof (fl)); 879 fl.l_type = F_WRLCK; 880 fl.l_whence = 0; 881 fl.l_start = lr->lr_offset; 882 fl.l_len = lr->lr_length; 883 884 error = VOP_SPACE(ZTOV(zp), F_FREESP, &fl, FWRITE | FOFFMAX, 885 lr->lr_offset, kcred, NULL); 886 887 VN_RELE(ZTOV(zp)); 888 889 return (error); 890 #else 891 ZFS_LOG(0, "Unexpected code path, report to pjd (at) FreeBSD.org"); 892 return (EOPNOTSUPP); 893 #endif 894 } 895 896 static int 897 zfs_replay_setattr(zfsvfs_t *zfsvfs, lr_setattr_t *lr, boolean_t byteswap) 898 { 899 znode_t *zp; 900 xvattr_t xva; 901 vattr_t *vap = &xva.xva_vattr; 902 vnode_t *vp; 903 int error; 904 void *start; 905 906 xva_init(&xva); 907 if (byteswap) { 908 byteswap_uint64_array(lr, sizeof (*lr)); 909 910 if ((lr->lr_mask & AT_XVATTR) && 911 zfsvfs->z_version >= ZPL_VERSION_INITIAL) 912 zfs_replay_swap_attrs((lr_attr_t *)(lr + 1)); 913 } 914 915 if ((error = zfs_zget(zfsvfs, lr->lr_foid, &zp)) != 0) 916 return (error); 917 918 zfs_init_vattr(vap, lr->lr_mask, lr->lr_mode, 919 lr->lr_uid, lr->lr_gid, 0, lr->lr_foid); 920 921 vap->va_size = lr->lr_size; 922 ZFS_TIME_DECODE(&vap->va_atime, lr->lr_atime); 923 ZFS_TIME_DECODE(&vap->va_mtime, lr->lr_mtime); 924 925 /* 926 * Fill in xvattr_t portions if necessary. 927 */ 928 929 start = (lr_setattr_t *)(lr + 1); 930 if (vap->va_mask & AT_XVATTR) { 931 zfs_replay_xvattr((lr_attr_t *)start, &xva); 932 start = (caddr_t)start + 933 ZIL_XVAT_SIZE(((lr_attr_t *)start)->lr_attr_masksize); 934 } else 935 xva.xva_vattr.va_mask &= ~AT_XVATTR; 936 937 zfsvfs->z_fuid_replay = zfs_replay_fuid_domain(start, &start, 938 lr->lr_uid, lr->lr_gid); 939 940 vp = ZTOV(zp); 941 vn_lock(vp, LK_EXCLUSIVE | LK_RETRY); 942 error = VOP_SETATTR(vp, vap, kcred); 943 VOP_UNLOCK(vp, 0); 944 945 zfs_fuid_info_free(zfsvfs->z_fuid_replay); 946 zfsvfs->z_fuid_replay = NULL; 947 VN_RELE(vp); 948 949 return (error); 950 } 951 952 extern int zfs_setsecattr(vnode_t *vp, vsecattr_t *vsecp, int flag, cred_t *cr, 953 caller_context_t *ct); 954 955 static int 956 zfs_replay_acl_v0(zfsvfs_t *zfsvfs, lr_acl_v0_t *lr, boolean_t byteswap) 957 { 958 ace_t *ace = (ace_t *)(lr + 1); /* ace array follows lr_acl_t */ 959 vsecattr_t vsa; 960 vnode_t *vp; 961 znode_t *zp; 962 int error; 963 964 if (byteswap) { 965 byteswap_uint64_array(lr, sizeof (*lr)); 966 zfs_oldace_byteswap(ace, lr->lr_aclcnt); 967 } 968 969 if ((error = zfs_zget(zfsvfs, lr->lr_foid, &zp)) != 0) 970 return (error); 971 972 bzero(&vsa, sizeof (vsa)); 973 vsa.vsa_mask = VSA_ACE | VSA_ACECNT; 974 vsa.vsa_aclcnt = lr->lr_aclcnt; 975 vsa.vsa_aclentsz = sizeof (ace_t) * vsa.vsa_aclcnt; 976 vsa.vsa_aclflags = 0; 977 vsa.vsa_aclentp = ace; 978 979 vp = ZTOV(zp); 980 vn_lock(vp, LK_EXCLUSIVE | LK_RETRY); 981 error = zfs_setsecattr(vp, &vsa, 0, kcred, NULL); 982 VOP_UNLOCK(vp, 0); 983 984 VN_RELE(vp); 985 986 return (error); 987 } 988 989 /* 990 * Replaying ACLs is complicated by FUID support. 991 * The log record may contain some optional data 992 * to be used for replaying FUID's. These pieces 993 * are the actual FUIDs that were created initially. 994 * The FUID table index may no longer be valid and 995 * during zfs_create() a new index may be assigned. 996 * Because of this the log will contain the original 997 * doman+rid in order to create a new FUID. 998 * 999 * The individual ACEs may contain an ephemeral uid/gid which is no 1000 * longer valid and will need to be replaced with an actual FUID. 1001 * 1002 */ 1003 static int 1004 zfs_replay_acl(zfsvfs_t *zfsvfs, lr_acl_t *lr, boolean_t byteswap) 1005 { 1006 ace_t *ace = (ace_t *)(lr + 1); 1007 vsecattr_t vsa; 1008 znode_t *zp; 1009 vnode_t *vp; 1010 int error; 1011 1012 if (byteswap) { 1013 byteswap_uint64_array(lr, sizeof (*lr)); 1014 zfs_ace_byteswap(ace, lr->lr_acl_bytes, B_FALSE); 1015 if (lr->lr_fuidcnt) { 1016 byteswap_uint64_array((caddr_t)ace + 1017 ZIL_ACE_LENGTH(lr->lr_acl_bytes), 1018 lr->lr_fuidcnt * sizeof (uint64_t)); 1019 } 1020 } 1021 1022 if ((error = zfs_zget(zfsvfs, lr->lr_foid, &zp)) != 0) 1023 return (error); 1024 1025 bzero(&vsa, sizeof (vsa)); 1026 vsa.vsa_mask = VSA_ACE | VSA_ACECNT | VSA_ACE_ACLFLAGS; 1027 vsa.vsa_aclcnt = lr->lr_aclcnt; 1028 vsa.vsa_aclentp = ace; 1029 vsa.vsa_aclentsz = lr->lr_acl_bytes; 1030 vsa.vsa_aclflags = lr->lr_acl_flags; 1031 1032 if (lr->lr_fuidcnt) { 1033 void *fuidstart = (caddr_t)ace + 1034 ZIL_ACE_LENGTH(lr->lr_acl_bytes); 1035 1036 zfsvfs->z_fuid_replay = 1037 zfs_replay_fuids(fuidstart, &fuidstart, 1038 lr->lr_fuidcnt, lr->lr_domcnt, 0, 0); 1039 } 1040 1041 vp = ZTOV(zp); 1042 vn_lock(vp, LK_EXCLUSIVE | LK_RETRY); 1043 error = zfs_setsecattr(vp, &vsa, 0, kcred, NULL); 1044 VOP_UNLOCK(vp, 0); 1045 1046 if (zfsvfs->z_fuid_replay) 1047 zfs_fuid_info_free(zfsvfs->z_fuid_replay); 1048 1049 zfsvfs->z_fuid_replay = NULL; 1050 VN_RELE(vp); 1051 1052 return (error); 1053 } 1054 1055 /* 1056 * Callback vectors for replaying records 1057 */ 1058 zil_replay_func_t *zfs_replay_vector[TX_MAX_TYPE] = { 1059 zfs_replay_error, /* 0 no such transaction type */ 1060 zfs_replay_create, /* TX_CREATE */ 1061 zfs_replay_create, /* TX_MKDIR */ 1062 zfs_replay_create, /* TX_MKXATTR */ 1063 zfs_replay_create, /* TX_SYMLINK */ 1064 zfs_replay_remove, /* TX_REMOVE */ 1065 zfs_replay_remove, /* TX_RMDIR */ 1066 zfs_replay_link, /* TX_LINK */ 1067 zfs_replay_rename, /* TX_RENAME */ 1068 zfs_replay_write, /* TX_WRITE */ 1069 zfs_replay_truncate, /* TX_TRUNCATE */ 1070 zfs_replay_setattr, /* TX_SETATTR */ 1071 zfs_replay_acl_v0, /* TX_ACL_V0 */ 1072 zfs_replay_acl, /* TX_ACL */ 1073 zfs_replay_create_acl, /* TX_CREATE_ACL */ 1074 zfs_replay_create, /* TX_CREATE_ATTR */ 1075 zfs_replay_create_acl, /* TX_CREATE_ACL_ATTR */ 1076 zfs_replay_create_acl, /* TX_MKDIR_ACL */ 1077 zfs_replay_create, /* TX_MKDIR_ATTR */ 1078 zfs_replay_create_acl, /* TX_MKDIR_ACL_ATTR */ 1079 zfs_replay_write2, /* TX_WRITE2 */ 1080 }; 1081
Indexes created Sun Jun 21 00:25:28 UTC 2026