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 2009 Sun Microsystems, Inc. All rights reserved. 23 * Use is subject to license terms. 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 (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 } 136 137 static int 138 zfs_replay_domain_cnt(uint64_t uid, uint64_t gid) 139 { 140 uint64_t uid_idx; 141 uint64_t gid_idx; 142 int domcnt = 0; 143 144 uid_idx = FUID_INDEX(uid); 145 gid_idx = FUID_INDEX(gid); 146 if (uid_idx) 147 domcnt++; 148 if (gid_idx > 0 && gid_idx != uid_idx) 149 domcnt++; 150 151 return (domcnt); 152 } 153 154 static void * 155 zfs_replay_fuid_domain_common(zfs_fuid_info_t *fuid_infop, void *start, 156 int domcnt) 157 { 158 int i; 159 160 for (i = 0; i != domcnt; i++) { 161 fuid_infop->z_domain_table[i] = start; 162 start = (caddr_t)start + strlen(start) + 1; 163 } 164 165 return (start); 166 } 167 168 /* 169 * Set the uid/gid in the fuid_info structure. 170 */ 171 static void 172 zfs_replay_fuid_ugid(zfs_fuid_info_t *fuid_infop, uint64_t uid, uint64_t gid) 173 { 174 /* 175 * If owner or group are log specific FUIDs then slurp up 176 * domain information and build zfs_fuid_info_t 177 */ 178 if (IS_EPHEMERAL(uid)) 179 fuid_infop->z_fuid_owner = uid; 180 181 if (IS_EPHEMERAL(gid)) 182 fuid_infop->z_fuid_group = gid; 183 } 184 185 /* 186 * Load fuid domains into fuid_info_t 187 */ 188 static zfs_fuid_info_t * 189 zfs_replay_fuid_domain(void *buf, void **end, uint64_t uid, uint64_t gid) 190 { 191 int domcnt; 192 193 zfs_fuid_info_t *fuid_infop; 194 195 fuid_infop = zfs_fuid_info_alloc(); 196 197 domcnt = zfs_replay_domain_cnt(uid, gid); 198 199 if (domcnt == 0) 200 return (fuid_infop); 201 202 fuid_infop->z_domain_table = 203 kmem_zalloc(domcnt * sizeof (char **), KM_SLEEP); 204 205 zfs_replay_fuid_ugid(fuid_infop, uid, gid); 206 207 fuid_infop->z_domain_cnt = domcnt; 208 *end = zfs_replay_fuid_domain_common(fuid_infop, buf, domcnt); 209 return (fuid_infop); 210 } 211 212 /* 213 * load zfs_fuid_t's and fuid_domains into fuid_info_t 214 */ 215 static zfs_fuid_info_t * 216 zfs_replay_fuids(void *start, void **end, int idcnt, int domcnt, uint64_t uid, 217 uint64_t gid) 218 { 219 uint64_t *log_fuid = (uint64_t *)start; 220 zfs_fuid_info_t *fuid_infop; 221 int i; 222 223 fuid_infop = zfs_fuid_info_alloc(); 224 fuid_infop->z_domain_cnt = domcnt; 225 226 fuid_infop->z_domain_table = 227 kmem_zalloc(domcnt * sizeof (char **), KM_SLEEP); 228 229 for (i = 0; i != idcnt; i++) { 230 zfs_fuid_t *zfuid; 231 232 zfuid = kmem_alloc(sizeof (zfs_fuid_t), KM_SLEEP); 233 zfuid->z_logfuid = *log_fuid; 234 zfuid->z_id = -1; 235 zfuid->z_domidx = 0; 236 list_insert_tail(&fuid_infop->z_fuids, zfuid); 237 log_fuid++; 238 } 239 240 zfs_replay_fuid_ugid(fuid_infop, uid, gid); 241 242 *end = zfs_replay_fuid_domain_common(fuid_infop, log_fuid, domcnt); 243 return (fuid_infop); 244 } 245 246 static void 247 zfs_replay_swap_attrs(lr_attr_t *lrattr) 248 { 249 /* swap the lr_attr structure */ 250 byteswap_uint32_array(lrattr, sizeof (*lrattr)); 251 /* swap the bitmap */ 252 byteswap_uint32_array(lrattr + 1, (lrattr->lr_attr_masksize - 1) * 253 sizeof (uint32_t)); 254 /* swap the attributes, create time + 64 bit word for attributes */ 255 byteswap_uint64_array((caddr_t)(lrattr + 1) + (sizeof (uint32_t) * 256 (lrattr->lr_attr_masksize - 1)), 3 * sizeof (uint64_t)); 257 } 258 259 /* 260 * Replay file create with optional ACL, xvattr information as well 261 * as option FUID information. 262 */ 263 static int 264 zfs_replay_create_acl(zfsvfs_t *zfsvfs, 265 lr_acl_create_t *lracl, boolean_t byteswap) 266 { 267 char *name = NULL; /* location determined later */ 268 lr_create_t *lr = (lr_create_t *)lracl; 269 znode_t *dzp; 270 vnode_t *vp = NULL; 271 xvattr_t xva; 272 int vflg = 0; 273 vsecattr_t vsec = { 0 }; 274 lr_attr_t *lrattr; 275 void *aclstart; 276 void *fuidstart; 277 size_t xvatlen = 0; 278 uint64_t txtype; 279 int error; 280 281 txtype = (lr->lr_common.lrc_txtype & ~TX_CI); 282 if (byteswap) { 283 byteswap_uint64_array(lracl, sizeof (*lracl)); 284 if (txtype == TX_CREATE_ACL_ATTR || 285 txtype == TX_MKDIR_ACL_ATTR) { 286 lrattr = (lr_attr_t *)(caddr_t)(lracl + 1); 287 zfs_replay_swap_attrs(lrattr); 288 xvatlen = ZIL_XVAT_SIZE(lrattr->lr_attr_masksize); 289 } 290 291 aclstart = (caddr_t)(lracl + 1) + xvatlen; 292 zfs_ace_byteswap(aclstart, lracl->lr_acl_bytes, B_FALSE); 293 /* swap fuids */ 294 if (lracl->lr_fuidcnt) { 295 byteswap_uint64_array((caddr_t)aclstart + 296 ZIL_ACE_LENGTH(lracl->lr_acl_bytes), 297 lracl->lr_fuidcnt * sizeof (uint64_t)); 298 } 299 } 300 301 if ((error = zfs_zget(zfsvfs, lr->lr_doid, &dzp)) != 0) 302 return (error); 303 304 xva_init(&xva); 305 zfs_init_vattr(&xva.xva_vattr, AT_TYPE | AT_MODE | AT_UID | AT_GID, 306 lr->lr_mode, lr->lr_uid, lr->lr_gid, lr->lr_rdev, lr->lr_foid); 307 308 /* 309 * All forms of zfs create (create, mkdir, mkxattrdir, symlink) 310 * eventually end up in zfs_mknode(), which assigns the object's 311 * creation time and generation number. The generic VOP_CREATE() 312 * doesn't have either concept, so we smuggle the values inside 313 * the vattr's otherwise unused va_ctime and va_nblocks fields. 314 */ 315 ZFS_TIME_DECODE(&xva.xva_vattr.va_ctime, lr->lr_crtime); 316 xva.xva_vattr.va_nblocks = lr->lr_gen; 317 318 error = dmu_object_info(zfsvfs->z_os, lr->lr_foid, NULL); 319 if (error != ENOENT) 320 goto bail; 321 322 if (lr->lr_common.lrc_txtype & TX_CI) 323 vflg |= FIGNORECASE; 324 switch (txtype) { 325 case TX_CREATE_ACL: 326 aclstart = (caddr_t)(lracl + 1); 327 fuidstart = (caddr_t)aclstart + 328 ZIL_ACE_LENGTH(lracl->lr_acl_bytes); 329 zfsvfs->z_fuid_replay = zfs_replay_fuids(fuidstart, 330 (void *)&name, lracl->lr_fuidcnt, lracl->lr_domcnt, 331 lr->lr_uid, lr->lr_gid); 332 /*FALLTHROUGH*/ 333 case TX_CREATE_ACL_ATTR: 334 if (name == NULL) { 335 lrattr = (lr_attr_t *)(caddr_t)(lracl + 1); 336 xvatlen = ZIL_XVAT_SIZE(lrattr->lr_attr_masksize); 337 xva.xva_vattr.va_mask |= AT_XVATTR; 338 zfs_replay_xvattr(lrattr, &xva); 339 } 340 vsec.vsa_mask = VSA_ACE | VSA_ACE_ACLFLAGS; 341 vsec.vsa_aclentp = (caddr_t)(lracl + 1) + xvatlen; 342 vsec.vsa_aclcnt = lracl->lr_aclcnt; 343 vsec.vsa_aclentsz = lracl->lr_acl_bytes; 344 vsec.vsa_aclflags = lracl->lr_acl_flags; 345 if (zfsvfs->z_fuid_replay == NULL) { 346 fuidstart = (caddr_t)(lracl + 1) + xvatlen + 347 ZIL_ACE_LENGTH(lracl->lr_acl_bytes); 348 zfsvfs->z_fuid_replay = 349 zfs_replay_fuids(fuidstart, 350 (void *)&name, lracl->lr_fuidcnt, lracl->lr_domcnt, 351 lr->lr_uid, lr->lr_gid); 352 } 353 354 #ifdef TODO 355 error = VOP_CREATE(ZTOV(dzp), name, &xva.xva_vattr, 356 0, 0, &vp, kcred, vflg, NULL, &vsec); 357 #else 358 panic("%s:%u: unsupported condition", __func__, __LINE__); 359 #endif 360 break; 361 case TX_MKDIR_ACL: 362 aclstart = (caddr_t)(lracl + 1); 363 fuidstart = (caddr_t)aclstart + 364 ZIL_ACE_LENGTH(lracl->lr_acl_bytes); 365 zfsvfs->z_fuid_replay = zfs_replay_fuids(fuidstart, 366 (void *)&name, lracl->lr_fuidcnt, lracl->lr_domcnt, 367 lr->lr_uid, lr->lr_gid); 368 /*FALLTHROUGH*/ 369 case TX_MKDIR_ACL_ATTR: 370 if (name == NULL) { 371 lrattr = (lr_attr_t *)(caddr_t)(lracl + 1); 372 xvatlen = ZIL_XVAT_SIZE(lrattr->lr_attr_masksize); 373 zfs_replay_xvattr(lrattr, &xva); 374 } 375 vsec.vsa_mask = VSA_ACE | VSA_ACE_ACLFLAGS; 376 vsec.vsa_aclentp = (caddr_t)(lracl + 1) + xvatlen; 377 vsec.vsa_aclcnt = lracl->lr_aclcnt; 378 vsec.vsa_aclentsz = lracl->lr_acl_bytes; 379 vsec.vsa_aclflags = lracl->lr_acl_flags; 380 if (zfsvfs->z_fuid_replay == NULL) { 381 fuidstart = (caddr_t)(lracl + 1) + xvatlen + 382 ZIL_ACE_LENGTH(lracl->lr_acl_bytes); 383 zfsvfs->z_fuid_replay = 384 zfs_replay_fuids(fuidstart, 385 (void *)&name, lracl->lr_fuidcnt, lracl->lr_domcnt, 386 lr->lr_uid, lr->lr_gid); 387 } 388 #ifdef TODO 389 error = VOP_MKDIR(ZTOV(dzp), name, &xva.xva_vattr, 390 &vp, kcred, NULL, vflg, &vsec); 391 #else 392 panic("%s:%u: unsupported condition", __func__, __LINE__); 393 #endif 394 break; 395 default: 396 error = ENOTSUP; 397 } 398 399 bail: 400 if (error == 0 && vp != NULL) 401 VN_RELE(vp); 402 403 VN_RELE(ZTOV(dzp)); 404 405 if (zfsvfs->z_fuid_replay) 406 zfs_fuid_info_free(zfsvfs->z_fuid_replay); 407 zfsvfs->z_fuid_replay = NULL; 408 409 return (error); 410 } 411 412 static int 413 zfs_replay_create(zfsvfs_t *zfsvfs, lr_create_t *lr, boolean_t byteswap) 414 { 415 char *name = NULL; /* location determined later */ 416 char *link; /* symlink content follows name */ 417 znode_t *dzp; 418 vnode_t *vp = NULL; 419 xvattr_t xva; 420 int vflg = 0; 421 size_t lrsize = sizeof (lr_create_t); 422 lr_attr_t *lrattr; 423 void *start; 424 size_t xvatlen; 425 uint64_t txtype; 426 struct componentname cn; 427 int error; 428 429 txtype = (lr->lr_common.lrc_txtype & ~TX_CI); 430 if (byteswap) { 431 byteswap_uint64_array(lr, sizeof (*lr)); 432 if (txtype == TX_CREATE_ATTR || txtype == TX_MKDIR_ATTR) 433 zfs_replay_swap_attrs((lr_attr_t *)(lr + 1)); 434 } 435 436 437 if ((error = zfs_zget(zfsvfs, lr->lr_doid, &dzp)) != 0) 438 return (error); 439 440 xva_init(&xva); 441 zfs_init_vattr(&xva.xva_vattr, AT_TYPE | AT_MODE | AT_UID | AT_GID, 442 lr->lr_mode, lr->lr_uid, lr->lr_gid, lr->lr_rdev, lr->lr_foid); 443 444 /* 445 * All forms of zfs create (create, mkdir, mkxattrdir, symlink) 446 * eventually end up in zfs_mknode(), which assigns the object's 447 * creation time and generation number. The generic VOP_CREATE() 448 * doesn't have either concept, so we smuggle the values inside 449 * the vattr's otherwise unused va_ctime and va_nblocks fields. 450 */ 451 ZFS_TIME_DECODE(&xva.xva_vattr.va_ctime, lr->lr_crtime); 452 xva.xva_vattr.va_nblocks = lr->lr_gen; 453 454 error = dmu_object_info(zfsvfs->z_os, lr->lr_foid, NULL); 455 if (error != ENOENT) 456 goto out; 457 458 if (lr->lr_common.lrc_txtype & TX_CI) 459 vflg |= FIGNORECASE; 460 461 /* 462 * Symlinks don't have fuid info, and CIFS never creates 463 * symlinks. 464 * 465 * The _ATTR versions will grab the fuid info in their subcases. 466 */ 467 if ((int)lr->lr_common.lrc_txtype != TX_SYMLINK && 468 (int)lr->lr_common.lrc_txtype != TX_MKDIR_ATTR && 469 (int)lr->lr_common.lrc_txtype != TX_CREATE_ATTR) { 470 start = (lr + 1); 471 zfsvfs->z_fuid_replay = 472 zfs_replay_fuid_domain(start, &start, 473 lr->lr_uid, lr->lr_gid); 474 } 475 476 cn.cn_cred = kcred; 477 cn.cn_flags = 0; 478 479 vn_lock(ZTOV(dzp), LK_EXCLUSIVE | LK_RETRY); 480 switch (txtype) { 481 case TX_CREATE_ATTR: 482 lrattr = (lr_attr_t *)(caddr_t)(lr + 1); 483 xvatlen = ZIL_XVAT_SIZE(lrattr->lr_attr_masksize); 484 zfs_replay_xvattr((lr_attr_t *)((caddr_t)lr + lrsize), &xva); 485 start = (caddr_t)(lr + 1) + xvatlen; 486 zfsvfs->z_fuid_replay = 487 zfs_replay_fuid_domain(start, &start, 488 lr->lr_uid, lr->lr_gid); 489 name = (char *)start; 490 491 /*FALLTHROUGH*/ 492 case TX_CREATE: 493 if (name == NULL) 494 name = (char *)start; 495 496 cn.cn_nameptr = name; 497 error = VOP_CREATE(ZTOV(dzp), &vp, &cn, &xva.xva_vattr /*,vflg*/); 498 break; 499 case TX_MKDIR_ATTR: 500 lrattr = (lr_attr_t *)(caddr_t)(lr + 1); 501 xvatlen = ZIL_XVAT_SIZE(lrattr->lr_attr_masksize); 502 zfs_replay_xvattr((lr_attr_t *)((caddr_t)lr + lrsize), &xva); 503 start = (caddr_t)(lr + 1) + xvatlen; 504 zfsvfs->z_fuid_replay = 505 zfs_replay_fuid_domain(start, &start, 506 lr->lr_uid, lr->lr_gid); 507 name = (char *)start; 508 509 /*FALLTHROUGH*/ 510 case TX_MKDIR: 511 if (name == NULL) 512 name = (char *)(lr + 1); 513 514 cn.cn_nameptr = name; 515 error = VOP_MKDIR(ZTOV(dzp), &vp, &cn, &xva.xva_vattr /*,vflg*/); 516 break; 517 case TX_MKXATTR: 518 error = zfs_make_xattrdir(dzp, &xva.xva_vattr, &vp, kcred); 519 break; 520 case TX_SYMLINK: 521 name = (char *)(lr + 1); 522 link = name + strlen(name) + 1; 523 cn.cn_nameptr = name; 524 error = VOP_SYMLINK(ZTOV(dzp), &vp, &cn, &xva.xva_vattr, link /*,vflg*/); 525 break; 526 default: 527 error = ENOTSUP; 528 } 529 VOP_UNLOCK(ZTOV(dzp)); 530 531 out: 532 if (error == 0 && vp != NULL) { 533 VOP_UNLOCK(vp); 534 VN_RELE(vp); 535 } 536 537 VN_RELE(ZTOV(dzp)); 538 539 if (zfsvfs->z_fuid_replay) 540 zfs_fuid_info_free(zfsvfs->z_fuid_replay); 541 zfsvfs->z_fuid_replay = NULL; 542 return (error); 543 } 544 545 static int 546 zfs_replay_remove(zfsvfs_t *zfsvfs, lr_remove_t *lr, boolean_t byteswap) 547 { 548 char *name = (char *)(lr + 1); /* name follows lr_remove_t */ 549 znode_t *dzp; 550 struct componentname cn; 551 vnode_t *vp; 552 int error; 553 int vflg = 0; 554 555 if (byteswap) 556 byteswap_uint64_array(lr, sizeof (*lr)); 557 558 if ((error = zfs_zget(zfsvfs, lr->lr_doid, &dzp)) != 0) 559 return (error); 560 561 if (lr->lr_common.lrc_txtype & TX_CI) 562 vflg |= FIGNORECASE; 563 cn.cn_nameptr = name; 564 cn.cn_namelen = strlen(name); 565 cn.cn_nameiop = DELETE; 566 cn.cn_flags = ISLASTCN; 567 //cn.cn_lkflags = LK_EXCLUSIVE | LK_RETRY; 568 cn.cn_cred = kcred; 569 vn_lock(ZTOV(dzp), LK_EXCLUSIVE | LK_RETRY); 570 error = VOP_LOOKUP(ZTOV(dzp), &vp, &cn); 571 if (error != 0) { 572 VOP_UNLOCK(ZTOV(dzp)); 573 goto fail; 574 } 575 576 switch ((int)lr->lr_common.lrc_txtype) { 577 case TX_REMOVE: 578 error = VOP_REMOVE(ZTOV(dzp), vp, &cn /*,vflg*/); 579 break; 580 case TX_RMDIR: 581 error = VOP_RMDIR(ZTOV(dzp), vp, &cn /*,vflg*/); 582 break; 583 default: 584 error = ENOTSUP; 585 } 586 vput(vp); 587 VOP_UNLOCK(ZTOV(dzp)); 588 fail: 589 VN_RELE(ZTOV(dzp)); 590 591 return (error); 592 } 593 594 static int 595 zfs_replay_link(zfsvfs_t *zfsvfs, lr_link_t *lr, boolean_t byteswap) 596 { 597 char *name = (char *)(lr + 1); /* name follows lr_link_t */ 598 znode_t *dzp, *zp; 599 struct componentname cn; 600 int error; 601 int vflg = 0; 602 603 if (byteswap) 604 byteswap_uint64_array(lr, sizeof (*lr)); 605 606 if ((error = zfs_zget(zfsvfs, lr->lr_doid, &dzp)) != 0) 607 return (error); 608 609 if ((error = zfs_zget(zfsvfs, lr->lr_link_obj, &zp)) != 0) { 610 VN_RELE(ZTOV(dzp)); 611 return (error); 612 } 613 614 if (lr->lr_common.lrc_txtype & TX_CI) 615 vflg |= FIGNORECASE; 616 cn.cn_nameptr = name; 617 cn.cn_cred = kcred; 618 cn.cn_flags = 0; 619 620 vn_lock(ZTOV(dzp), LK_EXCLUSIVE | LK_RETRY); 621 vn_lock(ZTOV(zp), LK_EXCLUSIVE | LK_RETRY); 622 error = VOP_LINK(ZTOV(dzp), ZTOV(zp), &cn /*,vflg*/); 623 VOP_UNLOCK(ZTOV(zp)); 624 VOP_UNLOCK(ZTOV(dzp)); 625 626 VN_RELE(ZTOV(zp)); 627 VN_RELE(ZTOV(dzp)); 628 629 return (error); 630 } 631 632 static int 633 zfs_replay_rename(zfsvfs_t *zfsvfs, lr_rename_t *lr, boolean_t byteswap) 634 { 635 char *sname = (char *)(lr + 1); /* sname and tname follow lr_rename_t */ 636 char *tname = sname + strlen(sname) + 1; 637 znode_t *sdzp, *tdzp; 638 struct componentname scn, tcn; 639 vnode_t *svp, *tvp; 640 kthread_t *td = curthread; 641 int error; 642 int vflg = 0; 643 644 if (byteswap) 645 byteswap_uint64_array(lr, sizeof (*lr)); 646 647 if ((error = zfs_zget(zfsvfs, lr->lr_sdoid, &sdzp)) != 0) 648 return (error); 649 650 if ((error = zfs_zget(zfsvfs, lr->lr_tdoid, &tdzp)) != 0) { 651 VN_RELE(ZTOV(sdzp)); 652 return (error); 653 } 654 655 if (lr->lr_common.lrc_txtype & TX_CI) 656 vflg |= FIGNORECASE; 657 svp = tvp = NULL; 658 659 scn.cn_nameptr = sname; 660 scn.cn_namelen = strlen(sname); 661 scn.cn_nameiop = DELETE; 662 scn.cn_flags = ISLASTCN; 663 // scn.cn_lkflags = LK_EXCLUSIVE | LK_RETRY; 664 scn.cn_cred = kcred; 665 vn_lock(ZTOV(sdzp), LK_EXCLUSIVE | LK_RETRY); 666 error = VOP_LOOKUP(ZTOV(sdzp), &svp, &scn); 667 VOP_UNLOCK(ZTOV(sdzp)); 668 if (error != 0) 669 goto fail; 670 VOP_UNLOCK(svp); 671 672 tcn.cn_nameptr = tname; 673 tcn.cn_namelen = strlen(tname); 674 tcn.cn_nameiop = RENAME; 675 tcn.cn_flags = ISLASTCN; 676 // tcn.cn_lkflags = LK_EXCLUSIVE | LK_RETRY; 677 tcn.cn_cred = kcred; 678 vn_lock(ZTOV(tdzp), LK_EXCLUSIVE | LK_RETRY); 679 error = VOP_LOOKUP(ZTOV(tdzp), &tvp, &tcn); 680 if (error == EJUSTRETURN) 681 tvp = NULL; 682 else if (error != 0) { 683 VOP_UNLOCK(ZTOV(tdzp)); 684 goto fail; 685 } 686 687 error = VOP_RENAME(ZTOV(sdzp), svp, &scn, ZTOV(tdzp), tvp, &tcn /*,vflg*/); 688 return (error); 689 fail: 690 if (svp != NULL) 691 vrele(svp); 692 if (tvp != NULL) 693 vrele(tvp); 694 VN_RELE(ZTOV(tdzp)); 695 VN_RELE(ZTOV(sdzp)); 696 697 return (error); 698 } 699 700 static int 701 zfs_replay_write(zfsvfs_t *zfsvfs, lr_write_t *lr, boolean_t byteswap) 702 { 703 char *data = (char *)(lr + 1); /* data follows lr_write_t */ 704 znode_t *zp; 705 int error; 706 ssize_t resid; 707 uint64_t orig_eof, eod, offset, length; 708 709 if (byteswap) 710 byteswap_uint64_array(lr, sizeof (*lr)); 711 712 if ((error = zfs_zget(zfsvfs, lr->lr_foid, &zp)) != 0) { 713 /* 714 * As we can log writes out of order, it's possible the 715 * file has been removed. In this case just drop the write 716 * and return success. 717 */ 718 if (error == ENOENT) 719 error = 0; 720 return (error); 721 } 722 723 offset = lr->lr_offset; 724 length = lr->lr_length; 725 eod = offset + length; /* end of data for this write */ 726 727 orig_eof = zp->z_phys->zp_size; 728 729 /* If it's a dmu_sync() block, write the whole block */ 730 if (lr->lr_common.lrc_reclen == sizeof (lr_write_t)) { 731 uint64_t blocksize = BP_GET_LSIZE(&lr->lr_blkptr); 732 if (length < blocksize) { 733 offset -= offset % blocksize; 734 length = blocksize; 735 } 736 } 737 738 error = vn_rdwr(UIO_WRITE, ZTOV(zp), data, length, offset, 739 UIO_SYSSPACE, 0, RLIM64_INFINITY, kcred, &resid); 740 741 /* 742 * This may be a write from a dmu_sync() for a whole block, 743 * and may extend beyond the current end of the file. 744 * We can't just replay what was written for this TX_WRITE as 745 * a future TX_WRITE2 may extend the eof and the data for that 746 * write needs to be there. So we write the whole block and 747 * reduce the eof. 748 */ 749 if (orig_eof < zp->z_phys->zp_size) /* file length grew ? */ 750 zp->z_phys->zp_size = eod; 751 752 VN_RELE(ZTOV(zp)); 753 754 return (error); 755 } 756 757 /* 758 * TX_WRITE2 are only generated when dmu_sync() returns EALREADY 759 * meaning the pool block is already being synced. So now that we always write 760 * out full blocks, all we have to do is expand the eof if 761 * the file is grown. 762 */ 763 static int 764 zfs_replay_write2(zfsvfs_t *zfsvfs, lr_write_t *lr, boolean_t byteswap) 765 { 766 znode_t *zp; 767 int error; 768 uint64_t end; 769 770 if (byteswap) 771 byteswap_uint64_array(lr, sizeof (*lr)); 772 773 if ((error = zfs_zget(zfsvfs, lr->lr_foid, &zp)) != 0) 774 return (error); 775 776 end = lr->lr_offset + lr->lr_length; 777 if (end > zp->z_phys->zp_size) { 778 ASSERT3U(end - zp->z_phys->zp_size, <, zp->z_blksz); 779 zp->z_phys->zp_size = end; 780 } 781 782 VN_RELE(ZTOV(zp)); 783 784 return (error); 785 } 786 787 static int 788 zfs_replay_truncate(zfsvfs_t *zfsvfs, lr_truncate_t *lr, boolean_t byteswap) 789 { 790 791 #ifdef __NetBSD__ 792 ZFS_LOG(0, "Unexpected code path, report to pjd@FreeBSD.org"); 793 return (EOPNOTSUPP); 794 #else 795 if ((error = zfs_zget(zfsvfs, lr->lr_foid, &zp)) != 0) 796 return (error); 797 798 bzero(&fl, sizeof (fl)); 799 fl.l_type = F_WRLCK; 800 fl.l_whence = 0; 801 fl.l_start = lr->lr_offset; 802 fl.l_len = lr->lr_length; 803 804 error = VOP_SPACE(ZTOV(zp), F_FREESP, &fl, FWRITE | FOFFMAX, 805 lr->lr_offset, kcred, NULL); 806 807 VN_RELE(ZTOV(zp)); 808 809 return (error); 810 #endif 811 } 812 813 static int 814 zfs_replay_setattr(zfsvfs_t *zfsvfs, lr_setattr_t *lr, boolean_t byteswap) 815 { 816 znode_t *zp; 817 xvattr_t xva; 818 vattr_t *vap = &xva.xva_vattr; 819 vnode_t *vp; 820 int error; 821 void *start; 822 823 xva_init(&xva); 824 if (byteswap) { 825 byteswap_uint64_array(lr, sizeof (*lr)); 826 827 if ((lr->lr_mask & AT_XVATTR) && 828 zfsvfs->z_version >= ZPL_VERSION_INITIAL) 829 zfs_replay_swap_attrs((lr_attr_t *)(lr + 1)); 830 } 831 832 if ((error = zfs_zget(zfsvfs, lr->lr_foid, &zp)) != 0) 833 return (error); 834 835 zfs_init_vattr(vap, lr->lr_mask, lr->lr_mode, 836 lr->lr_uid, lr->lr_gid, 0, lr->lr_foid); 837 838 vap->va_size = lr->lr_size; 839 ZFS_TIME_DECODE(&vap->va_atime, lr->lr_atime); 840 ZFS_TIME_DECODE(&vap->va_mtime, lr->lr_mtime); 841 842 /* 843 * Fill in xvattr_t portions if necessary. 844 */ 845 846 start = (lr_setattr_t *)(lr + 1); 847 if (vap->va_mask & AT_XVATTR) { 848 zfs_replay_xvattr((lr_attr_t *)start, &xva); 849 start = (caddr_t)start + 850 ZIL_XVAT_SIZE(((lr_attr_t *)start)->lr_attr_masksize); 851 } else 852 xva.xva_vattr.va_mask &= ~AT_XVATTR; 853 854 zfsvfs->z_fuid_replay = zfs_replay_fuid_domain(start, &start, 855 lr->lr_uid, lr->lr_gid); 856 857 vp = ZTOV(zp); 858 vn_lock(vp, LK_EXCLUSIVE | LK_RETRY); 859 error = VOP_SETATTR(vp, vap, kcred); 860 VOP_UNLOCK(vp); 861 862 zfs_fuid_info_free(zfsvfs->z_fuid_replay); 863 zfsvfs->z_fuid_replay = NULL; 864 VN_RELE(vp); 865 866 return (error); 867 } 868 869 static int 870 zfs_replay_acl_v0(zfsvfs_t *zfsvfs, lr_acl_v0_t *lr, boolean_t byteswap) 871 { 872 ace_t *ace = (ace_t *)(lr + 1); /* ace array follows lr_acl_t */ 873 vsecattr_t vsa; 874 znode_t *zp; 875 int error; 876 877 if (byteswap) { 878 byteswap_uint64_array(lr, sizeof (*lr)); 879 zfs_oldace_byteswap(ace, lr->lr_aclcnt); 880 } 881 882 if ((error = zfs_zget(zfsvfs, lr->lr_foid, &zp)) != 0) 883 return (error); 884 885 bzero(&vsa, sizeof (vsa)); 886 vsa.vsa_mask = VSA_ACE | VSA_ACECNT; 887 vsa.vsa_aclcnt = lr->lr_aclcnt; 888 vsa.vsa_aclentsz = sizeof (ace_t) * vsa.vsa_aclcnt; 889 vsa.vsa_aclflags = 0; 890 vsa.vsa_aclentp = ace; 891 892 #ifdef TODO 893 error = VOP_SETSECATTR(ZTOV(zp), &vsa, 0, kcred, NULL); 894 #else 895 panic("%s:%u: unsupported condition", __func__, __LINE__); 896 #endif 897 898 VN_RELE(ZTOV(zp)); 899 900 return (error); 901 } 902 903 /* 904 * Replaying ACLs is complicated by FUID support. 905 * The log record may contain some optional data 906 * to be used for replaying FUID's. These pieces 907 * are the actual FUIDs that were created initially. 908 * The FUID table index may no longer be valid and 909 * during zfs_create() a new index may be assigned. 910 * Because of this the log will contain the original 911 * doman+rid in order to create a new FUID. 912 * 913 * The individual ACEs may contain an ephemeral uid/gid which is no 914 * longer valid and will need to be replaced with an actual FUID. 915 * 916 */ 917 static int 918 zfs_replay_acl(zfsvfs_t *zfsvfs, lr_acl_t *lr, boolean_t byteswap) 919 { 920 ace_t *ace = (ace_t *)(lr + 1); 921 vsecattr_t vsa; 922 znode_t *zp; 923 int error; 924 925 if (byteswap) { 926 byteswap_uint64_array(lr, sizeof (*lr)); 927 zfs_ace_byteswap(ace, lr->lr_acl_bytes, B_FALSE); 928 if (lr->lr_fuidcnt) { 929 byteswap_uint64_array((caddr_t)ace + 930 ZIL_ACE_LENGTH(lr->lr_acl_bytes), 931 lr->lr_fuidcnt * sizeof (uint64_t)); 932 } 933 } 934 935 if ((error = zfs_zget(zfsvfs, lr->lr_foid, &zp)) != 0) 936 return (error); 937 938 #ifdef TODO 939 bzero(&vsa, sizeof (vsa)); 940 vsa.vsa_mask = VSA_ACE | VSA_ACECNT | VSA_ACE_ACLFLAGS; 941 vsa.vsa_aclcnt = lr->lr_aclcnt; 942 vsa.vsa_aclentp = ace; 943 vsa.vsa_aclentsz = lr->lr_acl_bytes; 944 vsa.vsa_aclflags = lr->lr_acl_flags; 945 946 if (lr->lr_fuidcnt) { 947 void *fuidstart = (caddr_t)ace + 948 ZIL_ACE_LENGTH(lr->lr_acl_bytes); 949 950 zfsvfs->z_fuid_replay = 951 zfs_replay_fuids(fuidstart, &fuidstart, 952 lr->lr_fuidcnt, lr->lr_domcnt, 0, 0); 953 } 954 955 error = VOP_SETSECATTR(ZTOV(zp), &vsa, 0, kcred, NULL); 956 957 if (zfsvfs->z_fuid_replay) 958 zfs_fuid_info_free(zfsvfs->z_fuid_replay); 959 #else 960 error = EOPNOTSUPP; 961 #endif 962 963 zfsvfs->z_fuid_replay = NULL; 964 VN_RELE(ZTOV(zp)); 965 966 return (error); 967 } 968 969 /* 970 * Callback vectors for replaying records 971 */ 972 zil_replay_func_t *zfs_replay_vector[TX_MAX_TYPE] = { 973 zfs_replay_error, /* 0 no such transaction type */ 974 zfs_replay_create, /* TX_CREATE */ 975 zfs_replay_create, /* TX_MKDIR */ 976 zfs_replay_create, /* TX_MKXATTR */ 977 zfs_replay_create, /* TX_SYMLINK */ 978 zfs_replay_remove, /* TX_REMOVE */ 979 zfs_replay_remove, /* TX_RMDIR */ 980 zfs_replay_link, /* TX_LINK */ 981 zfs_replay_rename, /* TX_RENAME */ 982 zfs_replay_write, /* TX_WRITE */ 983 zfs_replay_truncate, /* TX_TRUNCATE */ 984 zfs_replay_setattr, /* TX_SETATTR */ 985 zfs_replay_acl_v0, /* TX_ACL_V0 */ 986 zfs_replay_acl, /* TX_ACL */ 987 zfs_replay_create_acl, /* TX_CREATE_ACL */ 988 zfs_replay_create, /* TX_CREATE_ATTR */ 989 zfs_replay_create_acl, /* TX_CREATE_ACL_ATTR */ 990 zfs_replay_create_acl, /* TX_MKDIR_ACL */ 991 zfs_replay_create, /* TX_MKDIR_ATTR */ 992 zfs_replay_create_acl, /* TX_MKDIR_ACL_ATTR */ 993 zfs_replay_write2, /* TX_WRITE2 */ 994 }; 995