1 789 ahrens /* 2 789 ahrens * CDDL HEADER START 3 789 ahrens * 4 789 ahrens * The contents of this file are subject to the terms of the 5 1669 perrin * Common Development and Distribution License (the "License"). 6 1669 perrin * You may not use this file except in compliance with the License. 7 789 ahrens * 8 789 ahrens * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE 9 789 ahrens * or http://www.opensolaris.org/os/licensing. 10 789 ahrens * See the License for the specific language governing permissions 11 789 ahrens * and limitations under the License. 12 789 ahrens * 13 789 ahrens * When distributing Covered Code, include this CDDL HEADER in each 14 789 ahrens * file and include the License file at usr/src/OPENSOLARIS.LICENSE. 15 789 ahrens * If applicable, add the following below this CDDL HEADER, with the 16 789 ahrens * fields enclosed by brackets "[]" replaced with your own identifying 17 789 ahrens * information: Portions Copyright [yyyy] [name of copyright owner] 18 789 ahrens * 19 789 ahrens * CDDL HEADER END 20 789 ahrens */ 21 789 ahrens /* 22 9401 Neil * Copyright 2009 Sun Microsystems, Inc. All rights reserved. 23 789 ahrens * Use is subject to license terms. 24 789 ahrens */ 25 789 ahrens 26 789 ahrens #include <sys/types.h> 27 789 ahrens #include <sys/param.h> 28 789 ahrens #include <sys/systm.h> 29 789 ahrens #include <sys/sysmacros.h> 30 789 ahrens #include <sys/cmn_err.h> 31 789 ahrens #include <sys/kmem.h> 32 789 ahrens #include <sys/thread.h> 33 789 ahrens #include <sys/file.h> 34 789 ahrens #include <sys/vfs.h> 35 789 ahrens #include <sys/zfs_znode.h> 36 789 ahrens #include <sys/zfs_dir.h> 37 789 ahrens #include <sys/zil.h> 38 4620 perrin #include <sys/zil_impl.h> 39 789 ahrens #include <sys/byteorder.h> 40 789 ahrens #include <sys/policy.h> 41 789 ahrens #include <sys/stat.h> 42 789 ahrens #include <sys/mode.h> 43 789 ahrens #include <sys/acl.h> 44 789 ahrens #include <sys/dmu.h> 45 789 ahrens #include <sys/spa.h> 46 5331 amw #include <sys/zfs_fuid.h> 47 789 ahrens #include <sys/ddi.h> 48 8227 Neil #include <sys/dsl_dataset.h> 49 789 ahrens 50 789 ahrens /* 51 8227 Neil * These zfs_log_* functions must be called within a dmu tx, in one 52 8227 Neil * of 2 contexts depending on zilog->z_replay: 53 8227 Neil * 54 8227 Neil * Non replay mode 55 8227 Neil * --------------- 56 8227 Neil * We need to record the transaction so that if it is committed to 57 8227 Neil * the Intent Log then it can be replayed. An intent log transaction 58 8227 Neil * structure (itx_t) is allocated and all the information necessary to 59 8227 Neil * possibly replay the transaction is saved in it. The itx is then assigned 60 8227 Neil * a sequence number and inserted in the in-memory list anchored in the zilog. 61 8227 Neil * 62 8227 Neil * Replay mode 63 8227 Neil * ----------- 64 8227 Neil * We need to mark the intent log record as replayed in the log header. 65 8227 Neil * This is done in the same transaction as the replay so that they 66 8227 Neil * commit atomically. 67 789 ahrens */ 68 789 ahrens 69 5331 amw int 70 5331 amw zfs_log_create_txtype(zil_create_t type, vsecattr_t *vsecp, vattr_t *vap) 71 5331 amw { 72 5331 amw int isxvattr = (vap->va_mask & AT_XVATTR); 73 5331 amw switch (type) { 74 5331 amw case Z_FILE: 75 5331 amw if (vsecp == NULL && !isxvattr) 76 5331 amw return (TX_CREATE); 77 5331 amw if (vsecp && isxvattr) 78 5331 amw return (TX_CREATE_ACL_ATTR); 79 5331 amw if (vsecp) 80 5331 amw return (TX_CREATE_ACL); 81 5331 amw else 82 5331 amw return (TX_CREATE_ATTR); 83 5331 amw /*NOTREACHED*/ 84 5331 amw case Z_DIR: 85 5331 amw if (vsecp == NULL && !isxvattr) 86 5331 amw return (TX_MKDIR); 87 5331 amw if (vsecp && isxvattr) 88 5331 amw return (TX_MKDIR_ACL_ATTR); 89 5331 amw if (vsecp) 90 5331 amw return (TX_MKDIR_ACL); 91 5331 amw else 92 5331 amw return (TX_MKDIR_ATTR); 93 5331 amw case Z_XATTRDIR: 94 5331 amw return (TX_MKXATTR); 95 5331 amw } 96 5331 amw ASSERT(0); 97 5331 amw return (TX_MAX_TYPE); 98 5331 amw } 99 5331 amw 100 789 ahrens /* 101 5331 amw * build up the log data necessary for logging xvattr_t 102 5331 amw * First lr_attr_t is initialized. following the lr_attr_t 103 5331 amw * is the mapsize and attribute bitmap copied from the xvattr_t. 104 5331 amw * Following the bitmap and bitmapsize two 64 bit words are reserved 105 5331 amw * for the create time which may be set. Following the create time 106 5331 amw * records a single 64 bit integer which has the bits to set on 107 5331 amw * replay for the xvattr. 108 5331 amw */ 109 5331 amw static void 110 5331 amw zfs_log_xvattr(lr_attr_t *lrattr, xvattr_t *xvap) 111 5331 amw { 112 5331 amw uint32_t *bitmap; 113 5331 amw uint64_t *attrs; 114 5331 amw uint64_t *crtime; 115 5331 amw xoptattr_t *xoap; 116 5331 amw void *scanstamp; 117 5331 amw int i; 118 5331 amw 119 5331 amw xoap = xva_getxoptattr(xvap); 120 5331 amw ASSERT(xoap); 121 5331 amw 122 5331 amw lrattr->lr_attr_masksize = xvap->xva_mapsize; 123 5331 amw bitmap = &lrattr->lr_attr_bitmap; 124 5331 amw for (i = 0; i != xvap->xva_mapsize; i++, bitmap++) { 125 5331 amw *bitmap = xvap->xva_reqattrmap[i]; 126 5331 amw } 127 5331 amw 128 5331 amw /* Now pack the attributes up in a single uint64_t */ 129 5331 amw attrs = (uint64_t *)bitmap; 130 5331 amw crtime = attrs + 1; 131 5331 amw scanstamp = (caddr_t)(crtime + 2); 132 5331 amw *attrs = 0; 133 5331 amw if (XVA_ISSET_REQ(xvap, XAT_READONLY)) 134 5331 amw *attrs |= (xoap->xoa_readonly == 0) ? 0 : 135 5331 amw XAT0_READONLY; 136 5331 amw if (XVA_ISSET_REQ(xvap, XAT_HIDDEN)) 137 5331 amw *attrs |= (xoap->xoa_hidden == 0) ? 0 : 138 5331 amw XAT0_HIDDEN; 139 5331 amw if (XVA_ISSET_REQ(xvap, XAT_SYSTEM)) 140 5331 amw *attrs |= (xoap->xoa_system == 0) ? 0 : 141 5331 amw XAT0_SYSTEM; 142 5331 amw if (XVA_ISSET_REQ(xvap, XAT_ARCHIVE)) 143 5331 amw *attrs |= (xoap->xoa_archive == 0) ? 0 : 144 5331 amw XAT0_ARCHIVE; 145 5331 amw if (XVA_ISSET_REQ(xvap, XAT_IMMUTABLE)) 146 5331 amw *attrs |= (xoap->xoa_immutable == 0) ? 0 : 147 5331 amw XAT0_IMMUTABLE; 148 5331 amw if (XVA_ISSET_REQ(xvap, XAT_NOUNLINK)) 149 5331 amw *attrs |= (xoap->xoa_nounlink == 0) ? 0 : 150 5331 amw XAT0_NOUNLINK; 151 5331 amw if (XVA_ISSET_REQ(xvap, XAT_APPENDONLY)) 152 5331 amw *attrs |= (xoap->xoa_appendonly == 0) ? 0 : 153 5331 amw XAT0_APPENDONLY; 154 5331 amw if (XVA_ISSET_REQ(xvap, XAT_OPAQUE)) 155 5331 amw *attrs |= (xoap->xoa_opaque == 0) ? 0 : 156 5331 amw XAT0_APPENDONLY; 157 5331 amw if (XVA_ISSET_REQ(xvap, XAT_NODUMP)) 158 5331 amw *attrs |= (xoap->xoa_nodump == 0) ? 0 : 159 5331 amw XAT0_NODUMP; 160 5331 amw if (XVA_ISSET_REQ(xvap, XAT_AV_QUARANTINED)) 161 5331 amw *attrs |= (xoap->xoa_av_quarantined == 0) ? 0 : 162 5331 amw XAT0_AV_QUARANTINED; 163 5331 amw if (XVA_ISSET_REQ(xvap, XAT_AV_MODIFIED)) 164 5331 amw *attrs |= (xoap->xoa_av_modified == 0) ? 0 : 165 5331 amw XAT0_AV_MODIFIED; 166 5331 amw if (XVA_ISSET_REQ(xvap, XAT_CREATETIME)) 167 5331 amw ZFS_TIME_ENCODE(&xoap->xoa_createtime, crtime); 168 5331 amw if (XVA_ISSET_REQ(xvap, XAT_AV_SCANSTAMP)) 169 5331 amw bcopy(xoap->xoa_av_scanstamp, scanstamp, AV_SCANSTAMP_SZ); 170 10793 dai if (XVA_ISSET_REQ(xvap, XAT_REPARSE)) 171 10793 dai *attrs |= (xoap->xoa_reparse == 0) ? 0 : 172 10793 dai XAT0_REPARSE; 173 5331 amw } 174 5331 amw 175 5331 amw static void * 176 5331 amw zfs_log_fuid_ids(zfs_fuid_info_t *fuidp, void *start) 177 5331 amw { 178 5331 amw zfs_fuid_t *zfuid; 179 5331 amw uint64_t *fuidloc = start; 180 5331 amw 181 5331 amw /* First copy in the ACE FUIDs */ 182 5331 amw for (zfuid = list_head(&fuidp->z_fuids); zfuid; 183 5331 amw zfuid = list_next(&fuidp->z_fuids, zfuid)) { 184 5331 amw *fuidloc++ = zfuid->z_logfuid; 185 5331 amw } 186 5331 amw return (fuidloc); 187 5331 amw } 188 5331 amw 189 5331 amw 190 5331 amw static void * 191 5331 amw zfs_log_fuid_domains(zfs_fuid_info_t *fuidp, void *start) 192 5331 amw { 193 5331 amw zfs_fuid_domain_t *zdomain; 194 5331 amw 195 5331 amw /* now copy in the domain info, if any */ 196 5331 amw if (fuidp->z_domain_str_sz != 0) { 197 5331 amw for (zdomain = list_head(&fuidp->z_domains); zdomain; 198 5331 amw zdomain = list_next(&fuidp->z_domains, zdomain)) { 199 5331 amw bcopy((void *)zdomain->z_domain, start, 200 5331 amw strlen(zdomain->z_domain) + 1); 201 5331 amw start = (caddr_t)start + 202 5331 amw strlen(zdomain->z_domain) + 1; 203 5331 amw } 204 5331 amw } 205 5331 amw return (start); 206 5331 amw } 207 5331 amw 208 5331 amw /* 209 5331 amw * zfs_log_create() is used to handle TX_CREATE, TX_CREATE_ATTR, TX_MKDIR, 210 5331 amw * TX_MKDIR_ATTR and TX_MKXATTR 211 789 ahrens * transactions. 212 5331 amw * 213 5331 amw * TX_CREATE and TX_MKDIR are standard creates, but they may have FUID 214 5331 amw * domain information appended prior to the name. In this case the 215 5331 amw * uid/gid in the log record will be a log centric FUID. 216 5331 amw * 217 5331 amw * TX_CREATE_ACL_ATTR and TX_MKDIR_ACL_ATTR handle special creates that 218 5331 amw * may contain attributes, ACL and optional fuid information. 219 5331 amw * 220 5331 amw * TX_CREATE_ACL and TX_MKDIR_ACL handle special creates that specify 221 5331 amw * and ACL and normal users/groups in the ACEs. 222 5331 amw * 223 5331 amw * There may be an optional xvattr attribute information similar 224 5331 amw * to zfs_log_setattr. 225 5331 amw * 226 5331 amw * Also, after the file name "domain" strings may be appended. 227 789 ahrens */ 228 2638 perrin void 229 5331 amw zfs_log_create(zilog_t *zilog, dmu_tx_t *tx, uint64_t txtype, 230 5331 amw znode_t *dzp, znode_t *zp, char *name, vsecattr_t *vsecp, 231 5331 amw zfs_fuid_info_t *fuidp, vattr_t *vap) 232 789 ahrens { 233 789 ahrens itx_t *itx; 234 789 ahrens uint64_t seq; 235 789 ahrens lr_create_t *lr; 236 5331 amw lr_acl_create_t *lracl; 237 5331 amw size_t aclsize; 238 5331 amw size_t xvatsize = 0; 239 5331 amw size_t txsize; 240 5331 amw xvattr_t *xvap = (xvattr_t *)vap; 241 5331 amw void *end; 242 5331 amw size_t lrsize; 243 789 ahrens size_t namesize = strlen(name) + 1; 244 5331 amw size_t fuidsz = 0; 245 789 ahrens 246 10922 Jeff if (zil_replaying(zilog, tx)) 247 2638 perrin return; 248 8227 Neil 249 5331 amw /* 250 5331 amw * If we have FUIDs present then add in space for 251 5331 amw * domains and ACE fuid's if any. 252 5331 amw */ 253 5331 amw if (fuidp) { 254 5331 amw fuidsz += fuidp->z_domain_str_sz; 255 5331 amw fuidsz += fuidp->z_fuid_cnt * sizeof (uint64_t); 256 5331 amw } 257 5331 amw 258 5331 amw if (vap->va_mask & AT_XVATTR) 259 5331 amw xvatsize = ZIL_XVAT_SIZE(xvap->xva_mapsize); 260 5331 amw 261 5331 amw if ((int)txtype == TX_CREATE_ATTR || (int)txtype == TX_MKDIR_ATTR || 262 5331 amw (int)txtype == TX_CREATE || (int)txtype == TX_MKDIR || 263 5331 amw (int)txtype == TX_MKXATTR) { 264 5331 amw txsize = sizeof (*lr) + namesize + fuidsz + xvatsize; 265 5331 amw lrsize = sizeof (*lr); 266 5331 amw } else { 267 5331 amw aclsize = (vsecp) ? vsecp->vsa_aclentsz : 0; 268 5331 amw txsize = 269 5331 amw sizeof (lr_acl_create_t) + namesize + fuidsz + 270 5435 marks ZIL_ACE_LENGTH(aclsize) + xvatsize; 271 5331 amw lrsize = sizeof (lr_acl_create_t); 272 5331 amw } 273 5331 amw 274 5331 amw itx = zil_itx_create(txtype, txsize); 275 5331 amw 276 789 ahrens lr = (lr_create_t *)&itx->itx_lr; 277 789 ahrens lr->lr_doid = dzp->z_id; 278 789 ahrens lr->lr_foid = zp->z_id; 279 789 ahrens lr->lr_mode = zp->z_phys->zp_mode; 280 5331 amw if (!IS_EPHEMERAL(zp->z_phys->zp_uid)) { 281 5331 amw lr->lr_uid = (uint64_t)zp->z_phys->zp_uid; 282 5331 amw } else { 283 5331 amw lr->lr_uid = fuidp->z_fuid_owner; 284 5331 amw } 285 5331 amw if (!IS_EPHEMERAL(zp->z_phys->zp_gid)) { 286 5331 amw lr->lr_gid = (uint64_t)zp->z_phys->zp_gid; 287 5331 amw } else { 288 5331 amw lr->lr_gid = fuidp->z_fuid_group; 289 5331 amw } 290 789 ahrens lr->lr_gen = zp->z_phys->zp_gen; 291 789 ahrens lr->lr_crtime[0] = zp->z_phys->zp_crtime[0]; 292 789 ahrens lr->lr_crtime[1] = zp->z_phys->zp_crtime[1]; 293 789 ahrens lr->lr_rdev = zp->z_phys->zp_rdev; 294 5331 amw 295 5331 amw /* 296 5331 amw * Fill in xvattr info if any 297 5331 amw */ 298 5331 amw if (vap->va_mask & AT_XVATTR) { 299 5331 amw zfs_log_xvattr((lr_attr_t *)((caddr_t)lr + lrsize), xvap); 300 5331 amw end = (caddr_t)lr + lrsize + xvatsize; 301 5331 amw } else { 302 5331 amw end = (caddr_t)lr + lrsize; 303 5331 amw } 304 5331 amw 305 5331 amw /* Now fill in any ACL info */ 306 5331 amw 307 5331 amw if (vsecp) { 308 5331 amw lracl = (lr_acl_create_t *)&itx->itx_lr; 309 5331 amw lracl->lr_aclcnt = vsecp->vsa_aclcnt; 310 5331 amw lracl->lr_acl_bytes = aclsize; 311 5331 amw lracl->lr_domcnt = fuidp ? fuidp->z_domain_cnt : 0; 312 5331 amw lracl->lr_fuidcnt = fuidp ? fuidp->z_fuid_cnt : 0; 313 5331 amw if (vsecp->vsa_aclflags & VSA_ACE_ACLFLAGS) 314 5331 amw lracl->lr_acl_flags = (uint64_t)vsecp->vsa_aclflags; 315 5331 amw else 316 5331 amw lracl->lr_acl_flags = 0; 317 5331 amw 318 5331 amw bcopy(vsecp->vsa_aclentp, end, aclsize); 319 5435 marks end = (caddr_t)end + ZIL_ACE_LENGTH(aclsize); 320 5331 amw } 321 5331 amw 322 5331 amw /* drop in FUID info */ 323 5331 amw if (fuidp) { 324 5331 amw end = zfs_log_fuid_ids(fuidp, end); 325 5331 amw end = zfs_log_fuid_domains(fuidp, end); 326 5331 amw } 327 5331 amw /* 328 5331 amw * Now place file name in log record 329 5331 amw */ 330 5331 amw bcopy(name, end, namesize); 331 789 ahrens 332 789 ahrens seq = zil_itx_assign(zilog, itx, tx); 333 789 ahrens dzp->z_last_itx = seq; 334 789 ahrens zp->z_last_itx = seq; 335 789 ahrens } 336 789 ahrens 337 789 ahrens /* 338 789 ahrens * zfs_log_remove() handles both TX_REMOVE and TX_RMDIR transactions. 339 789 ahrens */ 340 2638 perrin void 341 5331 amw zfs_log_remove(zilog_t *zilog, dmu_tx_t *tx, uint64_t txtype, 342 789 ahrens znode_t *dzp, char *name) 343 789 ahrens { 344 789 ahrens itx_t *itx; 345 789 ahrens uint64_t seq; 346 789 ahrens lr_remove_t *lr; 347 789 ahrens size_t namesize = strlen(name) + 1; 348 789 ahrens 349 10922 Jeff if (zil_replaying(zilog, tx)) 350 2638 perrin return; 351 8227 Neil 352 789 ahrens itx = zil_itx_create(txtype, sizeof (*lr) + namesize); 353 789 ahrens lr = (lr_remove_t *)&itx->itx_lr; 354 789 ahrens lr->lr_doid = dzp->z_id; 355 789 ahrens bcopy(name, (char *)(lr + 1), namesize); 356 789 ahrens 357 789 ahrens seq = zil_itx_assign(zilog, itx, tx); 358 789 ahrens dzp->z_last_itx = seq; 359 789 ahrens } 360 789 ahrens 361 789 ahrens /* 362 789 ahrens * zfs_log_link() handles TX_LINK transactions. 363 789 ahrens */ 364 2638 perrin void 365 5331 amw zfs_log_link(zilog_t *zilog, dmu_tx_t *tx, uint64_t txtype, 366 789 ahrens znode_t *dzp, znode_t *zp, char *name) 367 789 ahrens { 368 789 ahrens itx_t *itx; 369 789 ahrens uint64_t seq; 370 789 ahrens lr_link_t *lr; 371 789 ahrens size_t namesize = strlen(name) + 1; 372 789 ahrens 373 10922 Jeff if (zil_replaying(zilog, tx)) 374 2638 perrin return; 375 789 ahrens 376 789 ahrens itx = zil_itx_create(txtype, sizeof (*lr) + namesize); 377 789 ahrens lr = (lr_link_t *)&itx->itx_lr; 378 789 ahrens lr->lr_doid = dzp->z_id; 379 789 ahrens lr->lr_link_obj = zp->z_id; 380 789 ahrens bcopy(name, (char *)(lr + 1), namesize); 381 789 ahrens 382 789 ahrens seq = zil_itx_assign(zilog, itx, tx); 383 789 ahrens dzp->z_last_itx = seq; 384 789 ahrens zp->z_last_itx = seq; 385 789 ahrens } 386 789 ahrens 387 789 ahrens /* 388 789 ahrens * zfs_log_symlink() handles TX_SYMLINK transactions. 389 789 ahrens */ 390 2638 perrin void 391 5331 amw zfs_log_symlink(zilog_t *zilog, dmu_tx_t *tx, uint64_t txtype, 392 5331 amw znode_t *dzp, znode_t *zp, char *name, char *link) 393 789 ahrens { 394 789 ahrens itx_t *itx; 395 789 ahrens uint64_t seq; 396 789 ahrens lr_create_t *lr; 397 789 ahrens size_t namesize = strlen(name) + 1; 398 789 ahrens size_t linksize = strlen(link) + 1; 399 789 ahrens 400 10922 Jeff if (zil_replaying(zilog, tx)) 401 2638 perrin return; 402 789 ahrens 403 789 ahrens itx = zil_itx_create(txtype, sizeof (*lr) + namesize + linksize); 404 789 ahrens lr = (lr_create_t *)&itx->itx_lr; 405 789 ahrens lr->lr_doid = dzp->z_id; 406 789 ahrens lr->lr_foid = zp->z_id; 407 789 ahrens lr->lr_mode = zp->z_phys->zp_mode; 408 789 ahrens lr->lr_uid = zp->z_phys->zp_uid; 409 789 ahrens lr->lr_gid = zp->z_phys->zp_gid; 410 789 ahrens lr->lr_gen = zp->z_phys->zp_gen; 411 789 ahrens lr->lr_crtime[0] = zp->z_phys->zp_crtime[0]; 412 789 ahrens lr->lr_crtime[1] = zp->z_phys->zp_crtime[1]; 413 789 ahrens bcopy(name, (char *)(lr + 1), namesize); 414 789 ahrens bcopy(link, (char *)(lr + 1) + namesize, linksize); 415 789 ahrens 416 789 ahrens seq = zil_itx_assign(zilog, itx, tx); 417 789 ahrens dzp->z_last_itx = seq; 418 789 ahrens zp->z_last_itx = seq; 419 789 ahrens } 420 789 ahrens 421 789 ahrens /* 422 789 ahrens * zfs_log_rename() handles TX_RENAME transactions. 423 789 ahrens */ 424 2638 perrin void 425 5331 amw zfs_log_rename(zilog_t *zilog, dmu_tx_t *tx, uint64_t txtype, 426 789 ahrens znode_t *sdzp, char *sname, znode_t *tdzp, char *dname, znode_t *szp) 427 789 ahrens { 428 789 ahrens itx_t *itx; 429 789 ahrens uint64_t seq; 430 789 ahrens lr_rename_t *lr; 431 789 ahrens size_t snamesize = strlen(sname) + 1; 432 789 ahrens size_t dnamesize = strlen(dname) + 1; 433 789 ahrens 434 10922 Jeff if (zil_replaying(zilog, tx)) 435 2638 perrin return; 436 8227 Neil 437 789 ahrens itx = zil_itx_create(txtype, sizeof (*lr) + snamesize + dnamesize); 438 789 ahrens lr = (lr_rename_t *)&itx->itx_lr; 439 789 ahrens lr->lr_sdoid = sdzp->z_id; 440 789 ahrens lr->lr_tdoid = tdzp->z_id; 441 789 ahrens bcopy(sname, (char *)(lr + 1), snamesize); 442 789 ahrens bcopy(dname, (char *)(lr + 1) + snamesize, dnamesize); 443 789 ahrens 444 789 ahrens seq = zil_itx_assign(zilog, itx, tx); 445 789 ahrens sdzp->z_last_itx = seq; 446 789 ahrens tdzp->z_last_itx = seq; 447 789 ahrens szp->z_last_itx = seq; 448 789 ahrens } 449 789 ahrens 450 789 ahrens /* 451 789 ahrens * zfs_log_write() handles TX_WRITE transactions. 452 789 ahrens */ 453 2237 maybee ssize_t zfs_immediate_write_sz = 32768; 454 789 ahrens 455 2638 perrin void 456 789 ahrens zfs_log_write(zilog_t *zilog, dmu_tx_t *tx, int txtype, 457 4620 perrin znode_t *zp, offset_t off, ssize_t resid, int ioflag) 458 789 ahrens { 459 1669 perrin itx_wr_state_t write_state; 460 4620 perrin boolean_t slogging; 461 4720 fr157268 uintptr_t fsync_cnt; 462 10310 Neil ssize_t immediate_write_sz; 463 789 ahrens 464 10922 Jeff if (zil_replaying(zilog, tx) || zp->z_unlinked) 465 2638 perrin return; 466 789 ahrens 467 10310 Neil immediate_write_sz = (zilog->zl_logbias == ZFS_LOGBIAS_THROUGHPUT) 468 10310 Neil ? 0 : zfs_immediate_write_sz; 469 10310 Neil 470 10310 Neil slogging = spa_has_slogs(zilog->zl_spa) && 471 10310 Neil (zilog->zl_logbias == ZFS_LOGBIAS_LATENCY); 472 10310 Neil if (resid > immediate_write_sz && !slogging && resid <= zp->z_blksz) 473 1669 perrin write_state = WR_INDIRECT; 474 6396 perrin else if (ioflag & (FSYNC | FDSYNC)) 475 1669 perrin write_state = WR_COPIED; 476 3638 billm else 477 1669 perrin write_state = WR_NEED_COPY; 478 4720 fr157268 479 4720 fr157268 if ((fsync_cnt = (uintptr_t)tsd_get(zfs_fsyncer_key)) != 0) { 480 4720 fr157268 (void) tsd_set(zfs_fsyncer_key, (void *)(fsync_cnt - 1)); 481 4720 fr157268 } 482 3638 billm 483 4620 perrin while (resid) { 484 4620 perrin itx_t *itx; 485 4620 perrin lr_write_t *lr; 486 4620 perrin ssize_t len; 487 4620 perrin 488 4620 perrin /* 489 7360 Neil * If the write would overflow the largest block then split it. 490 4620 perrin */ 491 7360 Neil if (write_state != WR_INDIRECT && resid > ZIL_MAX_LOG_DATA) 492 4620 perrin len = SPA_MAXBLOCKSIZE >> 1; 493 4620 perrin else 494 4620 perrin len = resid; 495 4620 perrin 496 4620 perrin itx = zil_itx_create(txtype, sizeof (*lr) + 497 4620 perrin (write_state == WR_COPIED ? len : 0)); 498 4620 perrin lr = (lr_write_t *)&itx->itx_lr; 499 4620 perrin if (write_state == WR_COPIED && dmu_read(zp->z_zfsvfs->z_os, 500 9512 Neil zp->z_id, off, len, lr + 1, DMU_READ_NO_PREFETCH) != 0) { 501 10922 Jeff zil_itx_destroy(itx); 502 1669 perrin itx = zil_itx_create(txtype, sizeof (*lr)); 503 3638 billm lr = (lr_write_t *)&itx->itx_lr; 504 1669 perrin write_state = WR_NEED_COPY; 505 1669 perrin } 506 4620 perrin 507 4620 perrin itx->itx_wr_state = write_state; 508 6101 perrin if (write_state == WR_NEED_COPY) 509 6101 perrin itx->itx_sod += len; 510 4620 perrin lr->lr_foid = zp->z_id; 511 4620 perrin lr->lr_offset = off; 512 4620 perrin lr->lr_length = len; 513 4620 perrin lr->lr_blkoff = 0; 514 4620 perrin BP_ZERO(&lr->lr_blkptr); 515 4620 perrin 516 4620 perrin itx->itx_private = zp->z_zfsvfs; 517 4620 perrin 518 6396 perrin if ((zp->z_sync_cnt != 0) || (fsync_cnt != 0) || 519 6396 perrin (ioflag & (FSYNC | FDSYNC))) 520 4720 fr157268 itx->itx_sync = B_TRUE; 521 4720 fr157268 else 522 4720 fr157268 itx->itx_sync = B_FALSE; 523 4720 fr157268 524 4620 perrin zp->z_last_itx = zil_itx_assign(zilog, itx, tx); 525 4620 perrin 526 4620 perrin off += len; 527 4620 perrin resid -= len; 528 789 ahrens } 529 789 ahrens } 530 789 ahrens 531 789 ahrens /* 532 789 ahrens * zfs_log_truncate() handles TX_TRUNCATE transactions. 533 789 ahrens */ 534 2638 perrin void 535 789 ahrens zfs_log_truncate(zilog_t *zilog, dmu_tx_t *tx, int txtype, 536 789 ahrens znode_t *zp, uint64_t off, uint64_t len) 537 789 ahrens { 538 789 ahrens itx_t *itx; 539 789 ahrens uint64_t seq; 540 789 ahrens lr_truncate_t *lr; 541 789 ahrens 542 10922 Jeff if (zil_replaying(zilog, tx) || zp->z_unlinked) 543 2638 perrin return; 544 8227 Neil 545 789 ahrens itx = zil_itx_create(txtype, sizeof (*lr)); 546 789 ahrens lr = (lr_truncate_t *)&itx->itx_lr; 547 789 ahrens lr->lr_foid = zp->z_id; 548 789 ahrens lr->lr_offset = off; 549 789 ahrens lr->lr_length = len; 550 789 ahrens 551 3063 perrin itx->itx_sync = (zp->z_sync_cnt != 0); 552 789 ahrens seq = zil_itx_assign(zilog, itx, tx); 553 789 ahrens zp->z_last_itx = seq; 554 789 ahrens } 555 789 ahrens 556 789 ahrens /* 557 789 ahrens * zfs_log_setattr() handles TX_SETATTR transactions. 558 789 ahrens */ 559 2638 perrin void 560 789 ahrens zfs_log_setattr(zilog_t *zilog, dmu_tx_t *tx, int txtype, 561 5331 amw znode_t *zp, vattr_t *vap, uint_t mask_applied, zfs_fuid_info_t *fuidp) 562 789 ahrens { 563 5331 amw itx_t *itx; 564 5331 amw uint64_t seq; 565 5331 amw lr_setattr_t *lr; 566 5331 amw xvattr_t *xvap = (xvattr_t *)vap; 567 5331 amw size_t recsize = sizeof (lr_setattr_t); 568 5331 amw void *start; 569 5331 amw 570 10922 Jeff if (zil_replaying(zilog, tx) || zp->z_unlinked) 571 2638 perrin return; 572 789 ahrens 573 5331 amw /* 574 5331 amw * If XVATTR set, then log record size needs to allow 575 5331 amw * for lr_attr_t + xvattr mask, mapsize and create time 576 5331 amw * plus actual attribute values 577 5331 amw */ 578 5331 amw if (vap->va_mask & AT_XVATTR) 579 5331 amw recsize = sizeof (*lr) + ZIL_XVAT_SIZE(xvap->xva_mapsize); 580 5331 amw 581 5331 amw if (fuidp) 582 5331 amw recsize += fuidp->z_domain_str_sz; 583 5331 amw 584 5331 amw itx = zil_itx_create(txtype, recsize); 585 789 ahrens lr = (lr_setattr_t *)&itx->itx_lr; 586 789 ahrens lr->lr_foid = zp->z_id; 587 789 ahrens lr->lr_mask = (uint64_t)mask_applied; 588 789 ahrens lr->lr_mode = (uint64_t)vap->va_mode; 589 5331 amw if ((mask_applied & AT_UID) && IS_EPHEMERAL(vap->va_uid)) 590 5331 amw lr->lr_uid = fuidp->z_fuid_owner; 591 5331 amw else 592 5331 amw lr->lr_uid = (uint64_t)vap->va_uid; 593 5331 amw 594 5331 amw if ((mask_applied & AT_GID) && IS_EPHEMERAL(vap->va_gid)) 595 5331 amw lr->lr_gid = fuidp->z_fuid_group; 596 5331 amw else 597 5331 amw lr->lr_gid = (uint64_t)vap->va_gid; 598 5331 amw 599 789 ahrens lr->lr_size = (uint64_t)vap->va_size; 600 789 ahrens ZFS_TIME_ENCODE(&vap->va_atime, lr->lr_atime); 601 789 ahrens ZFS_TIME_ENCODE(&vap->va_mtime, lr->lr_mtime); 602 5331 amw start = (lr_setattr_t *)(lr + 1); 603 5331 amw if (vap->va_mask & AT_XVATTR) { 604 5331 amw zfs_log_xvattr((lr_attr_t *)start, xvap); 605 5331 amw start = (caddr_t)start + ZIL_XVAT_SIZE(xvap->xva_mapsize); 606 5331 amw } 607 5331 amw 608 5331 amw /* 609 5331 amw * Now stick on domain information if any on end 610 5331 amw */ 611 5331 amw 612 5331 amw if (fuidp) 613 5331 amw (void) zfs_log_fuid_domains(fuidp, start); 614 789 ahrens 615 3063 perrin itx->itx_sync = (zp->z_sync_cnt != 0); 616 789 ahrens seq = zil_itx_assign(zilog, itx, tx); 617 789 ahrens zp->z_last_itx = seq; 618 789 ahrens } 619 789 ahrens 620 789 ahrens /* 621 789 ahrens * zfs_log_acl() handles TX_ACL transactions. 622 789 ahrens */ 623 2638 perrin void 624 5331 amw zfs_log_acl(zilog_t *zilog, dmu_tx_t *tx, znode_t *zp, 625 5331 amw vsecattr_t *vsecp, zfs_fuid_info_t *fuidp) 626 789 ahrens { 627 789 ahrens itx_t *itx; 628 789 ahrens uint64_t seq; 629 5331 amw lr_acl_v0_t *lrv0; 630 789 ahrens lr_acl_t *lr; 631 5331 amw int txtype; 632 5331 amw int lrsize; 633 5331 amw size_t txsize; 634 5331 amw size_t aclbytes = vsecp->vsa_aclentsz; 635 5331 amw 636 10922 Jeff if (zil_replaying(zilog, tx) || zp->z_unlinked) 637 6514 marks return; 638 8227 Neil 639 6514 marks txtype = (zp->z_zfsvfs->z_version < ZPL_VERSION_FUID) ? 640 5331 amw TX_ACL_V0 : TX_ACL; 641 5331 amw 642 5331 amw if (txtype == TX_ACL) 643 5331 amw lrsize = sizeof (*lr); 644 5331 amw else 645 5331 amw lrsize = sizeof (*lrv0); 646 789 ahrens 647 5435 marks txsize = lrsize + 648 5435 marks ((txtype == TX_ACL) ? ZIL_ACE_LENGTH(aclbytes) : aclbytes) + 649 5435 marks (fuidp ? fuidp->z_domain_str_sz : 0) + 650 6514 marks sizeof (uint64_t) * (fuidp ? fuidp->z_fuid_cnt : 0); 651 5331 amw 652 5331 amw itx = zil_itx_create(txtype, txsize); 653 5331 amw 654 789 ahrens lr = (lr_acl_t *)&itx->itx_lr; 655 789 ahrens lr->lr_foid = zp->z_id; 656 5331 amw if (txtype == TX_ACL) { 657 5331 amw lr->lr_acl_bytes = aclbytes; 658 5331 amw lr->lr_domcnt = fuidp ? fuidp->z_domain_cnt : 0; 659 5331 amw lr->lr_fuidcnt = fuidp ? fuidp->z_fuid_cnt : 0; 660 5331 amw if (vsecp->vsa_mask & VSA_ACE_ACLFLAGS) 661 5331 amw lr->lr_acl_flags = (uint64_t)vsecp->vsa_aclflags; 662 5331 amw else 663 5331 amw lr->lr_acl_flags = 0; 664 5331 amw } 665 5331 amw lr->lr_aclcnt = (uint64_t)vsecp->vsa_aclcnt; 666 5331 amw 667 5331 amw if (txtype == TX_ACL_V0) { 668 5331 amw lrv0 = (lr_acl_v0_t *)lr; 669 5331 amw bcopy(vsecp->vsa_aclentp, (ace_t *)(lrv0 + 1), aclbytes); 670 5331 amw } else { 671 5331 amw void *start = (ace_t *)(lr + 1); 672 5331 amw 673 5331 amw bcopy(vsecp->vsa_aclentp, start, aclbytes); 674 5331 amw 675 5435 marks start = (caddr_t)start + ZIL_ACE_LENGTH(aclbytes); 676 5331 amw 677 5331 amw if (fuidp) { 678 5331 amw start = zfs_log_fuid_ids(fuidp, start); 679 5331 amw (void) zfs_log_fuid_domains(fuidp, start); 680 5331 amw } 681 5331 amw } 682 789 ahrens 683 3063 perrin itx->itx_sync = (zp->z_sync_cnt != 0); 684 789 ahrens seq = zil_itx_assign(zilog, itx, tx); 685 789 ahrens zp->z_last_itx = seq; 686 789 ahrens } 687
Indexes created Sat Nov 28 01:19:25 UTC 2009
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