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 */ 24 25 #include <sys/types.h> 26 #include <sys/param.h> 27 #include <sys/errno.h> 28 #include <sys/uio.h> 29 #include <sys/buf.h> 30 #include <sys/modctl.h> 31 #include <sys/open.h> 32 #include <sys/file.h> 33 #include <sys/kmem.h> 34 #include <sys/conf.h> 35 #include <sys/cmn_err.h> 36 #include <sys/stat.h> 37 #include <sys/zfs_ioctl.h> 38 #include <sys/zfs_vfsops.h> 39 #include <sys/zfs_znode.h> 40 #include <sys/zap.h> 41 #include <sys/spa.h> 42 #include <sys/spa_impl.h> 43 #include <sys/vdev.h> 44 #include <sys/priv_impl.h> 45 #include <sys/dmu.h> 46 #include <sys/dsl_dir.h> 47 #include <sys/dsl_dataset.h> 48 #include <sys/dsl_prop.h> 49 #include <sys/dsl_deleg.h> 50 #include <sys/dmu_objset.h> 51 #include <sys/ddi.h> 52 #include <sys/sunddi.h> 53 #include <sys/sunldi.h> 54 #include <sys/policy.h> 55 #include <sys/zone.h> 56 #include <sys/nvpair.h> 57 #include <sys/pathname.h> 58 #include <sys/mount.h> 59 #include <sys/sdt.h> 60 #include <sys/fs/zfs.h> 61 #include <sys/zfs_ctldir.h> 62 #include <sys/zfs_dir.h> 63 #include <sys/zvol.h> 64 #include <sys/dsl_scan.h> 65 #include <sharefs/share.h> 66 #include <sys/dmu_objset.h> 67 68 #include "zfs_namecheck.h" 69 #include "zfs_prop.h" 70 #include "zfs_deleg.h" 71 #include "zfs_comutil.h" 72 73 extern struct modlfs zfs_modlfs; 74 75 extern void zfs_init(void); 76 extern void zfs_fini(void); 77 78 ldi_ident_t zfs_li = NULL; 79 dev_info_t *zfs_dip; 80 81 typedef int zfs_ioc_func_t(zfs_cmd_t *); 82 typedef int zfs_secpolicy_func_t(zfs_cmd_t *, cred_t *); 83 84 typedef enum { 85 NO_NAME, 86 POOL_NAME, 87 DATASET_NAME 88 } zfs_ioc_namecheck_t; 89 90 typedef struct zfs_ioc_vec { 91 zfs_ioc_func_t *zvec_func; 92 zfs_secpolicy_func_t *zvec_secpolicy; 93 zfs_ioc_namecheck_t zvec_namecheck; 94 boolean_t zvec_his_log; 95 boolean_t zvec_pool_check; 96 } zfs_ioc_vec_t; 97 98 /* This array is indexed by zfs_userquota_prop_t */ 99 static const char *userquota_perms[] = { 100 ZFS_DELEG_PERM_USERUSED, 101 ZFS_DELEG_PERM_USERQUOTA, 102 ZFS_DELEG_PERM_GROUPUSED, 103 ZFS_DELEG_PERM_GROUPQUOTA, 104 }; 105 106 static int zfs_ioc_userspace_upgrade(zfs_cmd_t *zc); 107 static int zfs_check_settable(const char *name, nvpair_t *property, 108 cred_t *cr); 109 static int zfs_check_clearable(char *dataset, nvlist_t *props, 110 nvlist_t **errors); 111 static int zfs_fill_zplprops_root(uint64_t, nvlist_t *, nvlist_t *, 112 boolean_t *); 113 int zfs_set_prop_nvlist(const char *, zprop_source_t, nvlist_t *, nvlist_t **); 114 115 /* _NOTE(PRINTFLIKE(4)) - this is printf-like, but lint is too whiney */ 116 void 117 __dprintf(const char *file, const char *func, int line, const char *fmt, ...) 118 { 119 const char *newfile; 120 char buf[512]; 121 va_list adx; 122 123 /* 124 * Get rid of annoying "../common/" prefix to filename. 125 */ 126 newfile = strrchr(file, '/'); 127 if (newfile != NULL) { 128 newfile = newfile + 1; /* Get rid of leading / */ 129 } else { 130 newfile = file; 131 } 132 133 va_start(adx, fmt); 134 (void) vsnprintf(buf, sizeof (buf), fmt, adx); 135 va_end(adx); 136 137 /* 138 * To get this data, use the zfs-dprintf probe as so: 139 * dtrace -q -n 'zfs-dprintf \ 140 * /stringof(arg0) == "dbuf.c"/ \ 141 * {printf("%s: %s", stringof(arg1), stringof(arg3))}' 142 * arg0 = file name 143 * arg1 = function name 144 * arg2 = line number 145 * arg3 = message 146 */ 147 DTRACE_PROBE4(zfs__dprintf, 148 char *, newfile, char *, func, int, line, char *, buf); 149 } 150 151 static void 152 history_str_free(char *buf) 153 { 154 kmem_free(buf, HIS_MAX_RECORD_LEN); 155 } 156 157 static char * 158 history_str_get(zfs_cmd_t *zc) 159 { 160 char *buf; 161 162 if (zc->zc_history == NULL) 163 return (NULL); 164 165 buf = kmem_alloc(HIS_MAX_RECORD_LEN, KM_SLEEP); 166 if (copyinstr((void *)(uintptr_t)zc->zc_history, 167 buf, HIS_MAX_RECORD_LEN, NULL) != 0) { 168 history_str_free(buf); 169 return (NULL); 170 } 171 172 buf[HIS_MAX_RECORD_LEN -1] = '\0'; 173 174 return (buf); 175 } 176 177 /* 178 * Check to see if the named dataset is currently defined as bootable 179 */ 180 static boolean_t 181 zfs_is_bootfs(const char *name) 182 { 183 objset_t *os; 184 185 if (dmu_objset_hold(name, FTAG, &os) == 0) { 186 boolean_t ret; 187 ret = (dmu_objset_id(os) == spa_bootfs(dmu_objset_spa(os))); 188 dmu_objset_rele(os, FTAG); 189 return (ret); 190 } 191 return (B_FALSE); 192 } 193 194 /* 195 * zfs_earlier_version 196 * 197 * Return non-zero if the spa version is less than requested version. 198 */ 199 static int 200 zfs_earlier_version(const char *name, int version) 201 { 202 spa_t *spa; 203 204 if (spa_open(name, &spa, FTAG) == 0) { 205 if (spa_version(spa) < version) { 206 spa_close(spa, FTAG); 207 return (1); 208 } 209 spa_close(spa, FTAG); 210 } 211 return (0); 212 } 213 214 /* 215 * zpl_earlier_version 216 * 217 * Return TRUE if the ZPL version is less than requested version. 218 */ 219 static boolean_t 220 zpl_earlier_version(const char *name, int version) 221 { 222 objset_t *os; 223 boolean_t rc = B_TRUE; 224 225 if (dmu_objset_hold(name, FTAG, &os) == 0) { 226 uint64_t zplversion; 227 228 if (dmu_objset_type(os) != DMU_OST_ZFS) { 229 dmu_objset_rele(os, FTAG); 230 return (B_TRUE); 231 } 232 /* XXX reading from non-owned objset */ 233 if (zfs_get_zplprop(os, ZFS_PROP_VERSION, &zplversion) == 0) 234 rc = zplversion < version; 235 dmu_objset_rele(os, FTAG); 236 } 237 return (rc); 238 } 239 240 static void 241 zfs_log_history(zfs_cmd_t *zc) 242 { 243 spa_t *spa; 244 char *buf; 245 246 if ((buf = history_str_get(zc)) == NULL) 247 return; 248 249 if (spa_open(zc->zc_name, &spa, FTAG) == 0) { 250 if (spa_version(spa) >= SPA_VERSION_ZPOOL_HISTORY) 251 (void) spa_history_log(spa, buf, LOG_CMD_NORMAL); 252 spa_close(spa, FTAG); 253 } 254 history_str_free(buf); 255 } 256 257 /* 258 * Policy for top-level read operations (list pools). Requires no privileges, 259 * and can be used in the local zone, as there is no associated dataset. 260 */ 261 /* ARGSUSED */ 262 static int 263 zfs_secpolicy_none(zfs_cmd_t *zc, cred_t *cr) 264 { 265 return (0); 266 } 267 268 /* 269 * Policy for dataset read operations (list children, get statistics). Requires 270 * no privileges, but must be visible in the local zone. 271 */ 272 /* ARGSUSED */ 273 static int 274 zfs_secpolicy_read(zfs_cmd_t *zc, cred_t *cr) 275 { 276 if (INGLOBALZONE(curproc) || 277 zone_dataset_visible(zc->zc_name, NULL)) 278 return (0); 279 280 return (ENOENT); 281 } 282 283 static int 284 zfs_dozonecheck(const char *dataset, cred_t *cr) 285 { 286 uint64_t zoned; 287 int writable = 1; 288 289 /* 290 * The dataset must be visible by this zone -- check this first 291 * so they don't see EPERM on something they shouldn't know about. 292 */ 293 if (!INGLOBALZONE(curproc) && 294 !zone_dataset_visible(dataset, &writable)) 295 return (ENOENT); 296 297 if (dsl_prop_get_integer(dataset, "zoned", &zoned, NULL)) 298 return (ENOENT); 299 300 if (INGLOBALZONE(curproc)) { 301 /* 302 * If the fs is zoned, only root can access it from the 303 * global zone. 304 */ 305 if (secpolicy_zfs(cr) && zoned) 306 return (EPERM); 307 } else { 308 /* 309 * If we are in a local zone, the 'zoned' property must be set. 310 */ 311 if (!zoned) 312 return (EPERM); 313 314 /* must be writable by this zone */ 315 if (!writable) 316 return (EPERM); 317 } 318 return (0); 319 } 320 321 int 322 zfs_secpolicy_write_perms(const char *name, const char *perm, cred_t *cr) 323 { 324 int error; 325 326 error = zfs_dozonecheck(name, cr); 327 if (error == 0) { 328 error = secpolicy_zfs(cr); 329 if (error) 330 error = dsl_deleg_access(name, perm, cr); 331 } 332 return (error); 333 } 334 335 /* 336 * Policy for setting the security label property. 337 * 338 * Returns 0 for success, non-zero for access and other errors. 339 */ 340 static int 341 zfs_set_slabel_policy(const char *name, char *strval, cred_t *cr) 342 { 343 char ds_hexsl[MAXNAMELEN]; 344 bslabel_t ds_sl, new_sl; 345 boolean_t new_default = FALSE; 346 uint64_t zoned; 347 int needed_priv = -1; 348 int error; 349 350 /* First get the existing dataset label. */ 351 error = dsl_prop_get(name, zfs_prop_to_name(ZFS_PROP_MLSLABEL), 352 1, sizeof (ds_hexsl), &ds_hexsl, NULL); 353 if (error) 354 return (EPERM); 355 356 if (strcasecmp(strval, ZFS_MLSLABEL_DEFAULT) == 0) 357 new_default = TRUE; 358 359 /* The label must be translatable */ 360 if (!new_default && (hexstr_to_label(strval, &new_sl) != 0)) 361 return (EINVAL); 362 363 /* 364 * In a non-global zone, disallow attempts to set a label that 365 * doesn't match that of the zone; otherwise no other checks 366 * are needed. 367 */ 368 if (!INGLOBALZONE(curproc)) { 369 if (new_default || !blequal(&new_sl, CR_SL(CRED()))) 370 return (EPERM); 371 return (0); 372 } 373 374 /* 375 * For global-zone datasets (i.e., those whose zoned property is 376 * "off", verify that the specified new label is valid for the 377 * global zone. 378 */ 379 if (dsl_prop_get_integer(name, 380 zfs_prop_to_name(ZFS_PROP_ZONED), &zoned, NULL)) 381 return (EPERM); 382 if (!zoned) { 383 if (zfs_check_global_label(name, strval) != 0) 384 return (EPERM); 385 } 386 387 /* 388 * If the existing dataset label is nondefault, check if the 389 * dataset is mounted (label cannot be changed while mounted). 390 * Get the zfsvfs; if there isn't one, then the dataset isn't 391 * mounted (or isn't a dataset, doesn't exist, ...). 392 */ 393 if (strcasecmp(ds_hexsl, ZFS_MLSLABEL_DEFAULT) != 0) { 394 objset_t *os; 395 static char *setsl_tag = "setsl_tag"; 396 397 /* 398 * Try to own the dataset; abort if there is any error, 399 * (e.g., already mounted, in use, or other error). 400 */ 401 error = dmu_objset_own(name, DMU_OST_ZFS, B_TRUE, 402 setsl_tag, &os); 403 if (error) 404 return (EPERM); 405 406 dmu_objset_disown(os, setsl_tag); 407 408 if (new_default) { 409 needed_priv = PRIV_FILE_DOWNGRADE_SL; 410 goto out_check; 411 } 412 413 if (hexstr_to_label(strval, &new_sl) != 0) 414 return (EPERM); 415 416 if (blstrictdom(&ds_sl, &new_sl)) 417 needed_priv = PRIV_FILE_DOWNGRADE_SL; 418 else if (blstrictdom(&new_sl, &ds_sl)) 419 needed_priv = PRIV_FILE_UPGRADE_SL; 420 } else { 421 /* dataset currently has a default label */ 422 if (!new_default) 423 needed_priv = PRIV_FILE_UPGRADE_SL; 424 } 425 426 out_check: 427 if (needed_priv != -1) 428 return (PRIV_POLICY(cr, needed_priv, B_FALSE, EPERM, NULL)); 429 return (0); 430 } 431 432 static int 433 zfs_secpolicy_setprop(const char *dsname, zfs_prop_t prop, nvpair_t *propval, 434 cred_t *cr) 435 { 436 char *strval; 437 438 /* 439 * Check permissions for special properties. 440 */ 441 switch (prop) { 442 case ZFS_PROP_ZONED: 443 /* 444 * Disallow setting of 'zoned' from within a local zone. 445 */ 446 if (!INGLOBALZONE(curproc)) 447 return (EPERM); 448 break; 449 450 case ZFS_PROP_QUOTA: 451 if (!INGLOBALZONE(curproc)) { 452 uint64_t zoned; 453 char setpoint[MAXNAMELEN]; 454 /* 455 * Unprivileged users are allowed to modify the 456 * quota on things *under* (ie. contained by) 457 * the thing they own. 458 */ 459 if (dsl_prop_get_integer(dsname, "zoned", &zoned, 460 setpoint)) 461 return (EPERM); 462 if (!zoned || strlen(dsname) <= strlen(setpoint)) 463 return (EPERM); 464 } 465 break; 466 467 case ZFS_PROP_MLSLABEL: 468 if (!is_system_labeled()) 469 return (EPERM); 470 471 if (nvpair_value_string(propval, &strval) == 0) { 472 int err; 473 474 err = zfs_set_slabel_policy(dsname, strval, CRED()); 475 if (err != 0) 476 return (err); 477 } 478 break; 479 } 480 481 return (zfs_secpolicy_write_perms(dsname, zfs_prop_to_name(prop), cr)); 482 } 483 484 int 485 zfs_secpolicy_fsacl(zfs_cmd_t *zc, cred_t *cr) 486 { 487 int error; 488 489 error = zfs_dozonecheck(zc->zc_name, cr); 490 if (error) 491 return (error); 492 493 /* 494 * permission to set permissions will be evaluated later in 495 * dsl_deleg_can_allow() 496 */ 497 return (0); 498 } 499 500 int 501 zfs_secpolicy_rollback(zfs_cmd_t *zc, cred_t *cr) 502 { 503 return (zfs_secpolicy_write_perms(zc->zc_name, 504 ZFS_DELEG_PERM_ROLLBACK, cr)); 505 } 506 507 int 508 zfs_secpolicy_send(zfs_cmd_t *zc, cred_t *cr) 509 { 510 return (zfs_secpolicy_write_perms(zc->zc_name, 511 ZFS_DELEG_PERM_SEND, cr)); 512 } 513 514 static int 515 zfs_secpolicy_deleg_share(zfs_cmd_t *zc, cred_t *cr) 516 { 517 vnode_t *vp; 518 int error; 519 520 if ((error = lookupname(zc->zc_value, UIO_SYSSPACE, 521 NO_FOLLOW, NULL, &vp)) != 0) 522 return (error); 523 524 /* Now make sure mntpnt and dataset are ZFS */ 525 526 if (vp->v_vfsp->vfs_fstype != zfsfstype || 527 (strcmp((char *)refstr_value(vp->v_vfsp->vfs_resource), 528 zc->zc_name) != 0)) { 529 VN_RELE(vp); 530 return (EPERM); 531 } 532 533 VN_RELE(vp); 534 return (dsl_deleg_access(zc->zc_name, 535 ZFS_DELEG_PERM_SHARE, cr)); 536 } 537 538 int 539 zfs_secpolicy_share(zfs_cmd_t *zc, cred_t *cr) 540 { 541 if (!INGLOBALZONE(curproc)) 542 return (EPERM); 543 544 if (secpolicy_nfs(cr) == 0) { 545 return (0); 546 } else { 547 return (zfs_secpolicy_deleg_share(zc, cr)); 548 } 549 } 550 551 int 552 zfs_secpolicy_smb_acl(zfs_cmd_t *zc, cred_t *cr) 553 { 554 if (!INGLOBALZONE(curproc)) 555 return (EPERM); 556 557 if (secpolicy_smb(cr) == 0) { 558 return (0); 559 } else { 560 return (zfs_secpolicy_deleg_share(zc, cr)); 561 } 562 } 563 564 static int 565 zfs_get_parent(const char *datasetname, char *parent, int parentsize) 566 { 567 char *cp; 568 569 /* 570 * Remove the @bla or /bla from the end of the name to get the parent. 571 */ 572 (void) strncpy(parent, datasetname, parentsize); 573 cp = strrchr(parent, '@'); 574 if (cp != NULL) { 575 cp[0] = '\0'; 576 } else { 577 cp = strrchr(parent, '/'); 578 if (cp == NULL) 579 return (ENOENT); 580 cp[0] = '\0'; 581 } 582 583 return (0); 584 } 585 586 int 587 zfs_secpolicy_destroy_perms(const char *name, cred_t *cr) 588 { 589 int error; 590 591 if ((error = zfs_secpolicy_write_perms(name, 592 ZFS_DELEG_PERM_MOUNT, cr)) != 0) 593 return (error); 594 595 return (zfs_secpolicy_write_perms(name, ZFS_DELEG_PERM_DESTROY, cr)); 596 } 597 598 static int 599 zfs_secpolicy_destroy(zfs_cmd_t *zc, cred_t *cr) 600 { 601 return (zfs_secpolicy_destroy_perms(zc->zc_name, cr)); 602 } 603 604 /* 605 * Destroying snapshots with delegated permissions requires 606 * descendent mount and destroy permissions. 607 * Reassemble the full filesystem@snap name so dsl_deleg_access() 608 * can do the correct permission check. 609 * 610 * Since this routine is used when doing a recursive destroy of snapshots 611 * and destroying snapshots requires descendent permissions, a successfull 612 * check of the top level snapshot applies to snapshots of all descendent 613 * datasets as well. 614 */ 615 static int 616 zfs_secpolicy_destroy_snaps(zfs_cmd_t *zc, cred_t *cr) 617 { 618 int error; 619 char *dsname; 620 621 dsname = kmem_asprintf("%s@%s", zc->zc_name, zc->zc_value); 622 623 error = zfs_secpolicy_destroy_perms(dsname, cr); 624 625 strfree(dsname); 626 return (error); 627 } 628 629 int 630 zfs_secpolicy_rename_perms(const char *from, const char *to, cred_t *cr) 631 { 632 char parentname[MAXNAMELEN]; 633 int error; 634 635 if ((error = zfs_secpolicy_write_perms(from, 636 ZFS_DELEG_PERM_RENAME, cr)) != 0) 637 return (error); 638 639 if ((error = zfs_secpolicy_write_perms(from, 640 ZFS_DELEG_PERM_MOUNT, cr)) != 0) 641 return (error); 642 643 if ((error = zfs_get_parent(to, parentname, 644 sizeof (parentname))) != 0) 645 return (error); 646 647 if ((error = zfs_secpolicy_write_perms(parentname, 648 ZFS_DELEG_PERM_CREATE, cr)) != 0) 649 return (error); 650 651 if ((error = zfs_secpolicy_write_perms(parentname, 652 ZFS_DELEG_PERM_MOUNT, cr)) != 0) 653 return (error); 654 655 return (error); 656 } 657 658 static int 659 zfs_secpolicy_rename(zfs_cmd_t *zc, cred_t *cr) 660 { 661 return (zfs_secpolicy_rename_perms(zc->zc_name, zc->zc_value, cr)); 662 } 663 664 static int 665 zfs_secpolicy_promote(zfs_cmd_t *zc, cred_t *cr) 666 { 667 char parentname[MAXNAMELEN]; 668 objset_t *clone; 669 int error; 670 671 error = zfs_secpolicy_write_perms(zc->zc_name, 672 ZFS_DELEG_PERM_PROMOTE, cr); 673 if (error) 674 return (error); 675 676 error = dmu_objset_hold(zc->zc_name, FTAG, &clone); 677 678 if (error == 0) { 679 dsl_dataset_t *pclone = NULL; 680 dsl_dir_t *dd; 681 dd = clone->os_dsl_dataset->ds_dir; 682 683 rw_enter(&dd->dd_pool->dp_config_rwlock, RW_READER); 684 error = dsl_dataset_hold_obj(dd->dd_pool, 685 dd->dd_phys->dd_origin_obj, FTAG, &pclone); 686 rw_exit(&dd->dd_pool->dp_config_rwlock); 687 if (error) { 688 dmu_objset_rele(clone, FTAG); 689 return (error); 690 } 691 692 error = zfs_secpolicy_write_perms(zc->zc_name, 693 ZFS_DELEG_PERM_MOUNT, cr); 694 695 dsl_dataset_name(pclone, parentname); 696 dmu_objset_rele(clone, FTAG); 697 dsl_dataset_rele(pclone, FTAG); 698 if (error == 0) 699 error = zfs_secpolicy_write_perms(parentname, 700 ZFS_DELEG_PERM_PROMOTE, cr); 701 } 702 return (error); 703 } 704 705 static int 706 zfs_secpolicy_receive(zfs_cmd_t *zc, cred_t *cr) 707 { 708 int error; 709 710 if ((error = zfs_secpolicy_write_perms(zc->zc_name, 711 ZFS_DELEG_PERM_RECEIVE, cr)) != 0) 712 return (error); 713 714 if ((error = zfs_secpolicy_write_perms(zc->zc_name, 715 ZFS_DELEG_PERM_MOUNT, cr)) != 0) 716 return (error); 717 718 return (zfs_secpolicy_write_perms(zc->zc_name, 719 ZFS_DELEG_PERM_CREATE, cr)); 720 } 721 722 int 723 zfs_secpolicy_snapshot_perms(const char *name, cred_t *cr) 724 { 725 return (zfs_secpolicy_write_perms(name, 726 ZFS_DELEG_PERM_SNAPSHOT, cr)); 727 } 728 729 static int 730 zfs_secpolicy_snapshot(zfs_cmd_t *zc, cred_t *cr) 731 { 732 733 return (zfs_secpolicy_snapshot_perms(zc->zc_name, cr)); 734 } 735 736 static int 737 zfs_secpolicy_create(zfs_cmd_t *zc, cred_t *cr) 738 { 739 char parentname[MAXNAMELEN]; 740 int error; 741 742 if ((error = zfs_get_parent(zc->zc_name, parentname, 743 sizeof (parentname))) != 0) 744 return (error); 745 746 if (zc->zc_value[0] != '\0') { 747 if ((error = zfs_secpolicy_write_perms(zc->zc_value, 748 ZFS_DELEG_PERM_CLONE, cr)) != 0) 749 return (error); 750 } 751 752 if ((error = zfs_secpolicy_write_perms(parentname, 753 ZFS_DELEG_PERM_CREATE, cr)) != 0) 754 return (error); 755 756 error = zfs_secpolicy_write_perms(parentname, 757 ZFS_DELEG_PERM_MOUNT, cr); 758 759 return (error); 760 } 761 762 static int 763 zfs_secpolicy_umount(zfs_cmd_t *zc, cred_t *cr) 764 { 765 int error; 766 767 error = secpolicy_fs_unmount(cr, NULL); 768 if (error) { 769 error = dsl_deleg_access(zc->zc_name, ZFS_DELEG_PERM_MOUNT, cr); 770 } 771 return (error); 772 } 773 774 /* 775 * Policy for pool operations - create/destroy pools, add vdevs, etc. Requires 776 * SYS_CONFIG privilege, which is not available in a local zone. 777 */ 778 /* ARGSUSED */ 779 static int 780 zfs_secpolicy_config(zfs_cmd_t *zc, cred_t *cr) 781 { 782 if (secpolicy_sys_config(cr, B_FALSE) != 0) 783 return (EPERM); 784 785 return (0); 786 } 787 788 /* 789 * Policy for fault injection. Requires all privileges. 790 */ 791 /* ARGSUSED */ 792 static int 793 zfs_secpolicy_inject(zfs_cmd_t *zc, cred_t *cr) 794 { 795 return (secpolicy_zinject(cr)); 796 } 797 798 static int 799 zfs_secpolicy_inherit(zfs_cmd_t *zc, cred_t *cr) 800 { 801 zfs_prop_t prop = zfs_name_to_prop(zc->zc_value); 802 803 if (prop == ZPROP_INVAL) { 804 if (!zfs_prop_user(zc->zc_value)) 805 return (EINVAL); 806 return (zfs_secpolicy_write_perms(zc->zc_name, 807 ZFS_DELEG_PERM_USERPROP, cr)); 808 } else { 809 return (zfs_secpolicy_setprop(zc->zc_name, prop, 810 NULL, cr)); 811 } 812 } 813 814 static int 815 zfs_secpolicy_userspace_one(zfs_cmd_t *zc, cred_t *cr) 816 { 817 int err = zfs_secpolicy_read(zc, cr); 818 if (err) 819 return (err); 820 821 if (zc->zc_objset_type >= ZFS_NUM_USERQUOTA_PROPS) 822 return (EINVAL); 823 824 if (zc->zc_value[0] == 0) { 825 /* 826 * They are asking about a posix uid/gid. If it's 827 * themself, allow it. 828 */ 829 if (zc->zc_objset_type == ZFS_PROP_USERUSED || 830 zc->zc_objset_type == ZFS_PROP_USERQUOTA) { 831 if (zc->zc_guid == crgetuid(cr)) 832 return (0); 833 } else { 834 if (groupmember(zc->zc_guid, cr)) 835 return (0); 836 } 837 } 838 839 return (zfs_secpolicy_write_perms(zc->zc_name, 840 userquota_perms[zc->zc_objset_type], cr)); 841 } 842 843 static int 844 zfs_secpolicy_userspace_many(zfs_cmd_t *zc, cred_t *cr) 845 { 846 int err = zfs_secpolicy_read(zc, cr); 847 if (err) 848 return (err); 849 850 if (zc->zc_objset_type >= ZFS_NUM_USERQUOTA_PROPS) 851 return (EINVAL); 852 853 return (zfs_secpolicy_write_perms(zc->zc_name, 854 userquota_perms[zc->zc_objset_type], cr)); 855 } 856 857 static int 858 zfs_secpolicy_userspace_upgrade(zfs_cmd_t *zc, cred_t *cr) 859 { 860 return (zfs_secpolicy_setprop(zc->zc_name, ZFS_PROP_VERSION, 861 NULL, cr)); 862 } 863 864 static int 865 zfs_secpolicy_hold(zfs_cmd_t *zc, cred_t *cr) 866 { 867 return (zfs_secpolicy_write_perms(zc->zc_name, 868 ZFS_DELEG_PERM_HOLD, cr)); 869 } 870 871 static int 872 zfs_secpolicy_release(zfs_cmd_t *zc, cred_t *cr) 873 { 874 return (zfs_secpolicy_write_perms(zc->zc_name, 875 ZFS_DELEG_PERM_RELEASE, cr)); 876 } 877 878 /* 879 * Returns the nvlist as specified by the user in the zfs_cmd_t. 880 */ 881 static int 882 get_nvlist(uint64_t nvl, uint64_t size, int iflag, nvlist_t **nvp) 883 { 884 char *packed; 885 int error; 886 nvlist_t *list = NULL; 887 888 /* 889 * Read in and unpack the user-supplied nvlist. 890 */ 891 if (size == 0) 892 return (EINVAL); 893 894 packed = kmem_alloc(size, KM_SLEEP); 895 896 if ((error = ddi_copyin((void *)(uintptr_t)nvl, packed, size, 897 iflag)) != 0) { 898 kmem_free(packed, size); 899 return (error); 900 } 901 902 if ((error = nvlist_unpack(packed, size, &list, 0)) != 0) { 903 kmem_free(packed, size); 904 return (error); 905 } 906 907 kmem_free(packed, size); 908 909 *nvp = list; 910 return (0); 911 } 912 913 static int 914 fit_error_list(zfs_cmd_t *zc, nvlist_t **errors) 915 { 916 size_t size; 917 918 VERIFY(nvlist_size(*errors, &size, NV_ENCODE_NATIVE) == 0); 919 920 if (size > zc->zc_nvlist_dst_size) { 921 nvpair_t *more_errors; 922 int n = 0; 923 924 if (zc->zc_nvlist_dst_size < 1024) 925 return (ENOMEM); 926 927 VERIFY(nvlist_add_int32(*errors, ZPROP_N_MORE_ERRORS, 0) == 0); 928 more_errors = nvlist_prev_nvpair(*errors, NULL); 929 930 do { 931 nvpair_t *pair = nvlist_prev_nvpair(*errors, 932 more_errors); 933 VERIFY(nvlist_remove_nvpair(*errors, pair) == 0); 934 n++; 935 VERIFY(nvlist_size(*errors, &size, 936 NV_ENCODE_NATIVE) == 0); 937 } while (size > zc->zc_nvlist_dst_size); 938 939 VERIFY(nvlist_remove_nvpair(*errors, more_errors) == 0); 940 VERIFY(nvlist_add_int32(*errors, ZPROP_N_MORE_ERRORS, n) == 0); 941 ASSERT(nvlist_size(*errors, &size, NV_ENCODE_NATIVE) == 0); 942 ASSERT(size <= zc->zc_nvlist_dst_size); 943 } 944 945 return (0); 946 } 947 948 static int 949 put_nvlist(zfs_cmd_t *zc, nvlist_t *nvl) 950 { 951 char *packed = NULL; 952 int error = 0; 953 size_t size; 954 955 VERIFY(nvlist_size(nvl, &size, NV_ENCODE_NATIVE) == 0); 956 957 if (size > zc->zc_nvlist_dst_size) { 958 error = ENOMEM; 959 } else { 960 packed = kmem_alloc(size, KM_SLEEP); 961 VERIFY(nvlist_pack(nvl, &packed, &size, NV_ENCODE_NATIVE, 962 KM_SLEEP) == 0); 963 if (ddi_copyout(packed, (void *)(uintptr_t)zc->zc_nvlist_dst, 964 size, zc->zc_iflags) != 0) 965 error = EFAULT; 966 kmem_free(packed, size); 967 } 968 969 zc->zc_nvlist_dst_size = size; 970 return (error); 971 } 972 973 static int 974 getzfsvfs(const char *dsname, zfsvfs_t **zfvp) 975 { 976 objset_t *os; 977 int error; 978 979 error = dmu_objset_hold(dsname, FTAG, &os); 980 if (error) 981 return (error); 982 if (dmu_objset_type(os) != DMU_OST_ZFS) { 983 dmu_objset_rele(os, FTAG); 984 return (EINVAL); 985 } 986 987 mutex_enter(&os->os_user_ptr_lock); 988 *zfvp = dmu_objset_get_user(os); 989 if (*zfvp) { 990 VFS_HOLD((*zfvp)->z_vfs); 991 } else { 992 error = ESRCH; 993 } 994 mutex_exit(&os->os_user_ptr_lock); 995 dmu_objset_rele(os, FTAG); 996 return (error); 997 } 998 999 /* 1000 * Find a zfsvfs_t for a mounted filesystem, or create our own, in which 1001 * case its z_vfs will be NULL, and it will be opened as the owner. 1002 */ 1003 static int 1004 zfsvfs_hold(const char *name, void *tag, zfsvfs_t **zfvp) 1005 { 1006 int error = 0; 1007 1008 if (getzfsvfs(name, zfvp) != 0) 1009 error = zfsvfs_create(name, zfvp); 1010 if (error == 0) { 1011 rrw_enter(&(*zfvp)->z_teardown_lock, RW_READER, tag); 1012 if ((*zfvp)->z_unmounted) { 1013 /* 1014 * XXX we could probably try again, since the unmounting 1015 * thread should be just about to disassociate the 1016 * objset from the zfsvfs. 1017 */ 1018 rrw_exit(&(*zfvp)->z_teardown_lock, tag); 1019 return (EBUSY); 1020 } 1021 } 1022 return (error); 1023 } 1024 1025 static void 1026 zfsvfs_rele(zfsvfs_t *zfsvfs, void *tag) 1027 { 1028 rrw_exit(&zfsvfs->z_teardown_lock, tag); 1029 1030 if (zfsvfs->z_vfs) { 1031 VFS_RELE(zfsvfs->z_vfs); 1032 } else { 1033 dmu_objset_disown(zfsvfs->z_os, zfsvfs); 1034 zfsvfs_free(zfsvfs); 1035 } 1036 } 1037 1038 static int 1039 zfs_ioc_pool_create(zfs_cmd_t *zc) 1040 { 1041 int error; 1042 nvlist_t *config, *props = NULL; 1043 nvlist_t *rootprops = NULL; 1044 nvlist_t *zplprops = NULL; 1045 char *buf; 1046 1047 if (error = get_nvlist(zc->zc_nvlist_conf, zc->zc_nvlist_conf_size, 1048 zc->zc_iflags, &config)) 1049 return (error); 1050 1051 if (zc->zc_nvlist_src_size != 0 && (error = 1052 get_nvlist(zc->zc_nvlist_src, zc->zc_nvlist_src_size, 1053 zc->zc_iflags, &props))) { 1054 nvlist_free(config); 1055 return (error); 1056 } 1057 1058 if (props) { 1059 nvlist_t *nvl = NULL; 1060 uint64_t version = SPA_VERSION; 1061 1062 (void) nvlist_lookup_uint64(props, 1063 zpool_prop_to_name(ZPOOL_PROP_VERSION), &version); 1064 if (version < SPA_VERSION_INITIAL || version > SPA_VERSION) { 1065 error = EINVAL; 1066 goto pool_props_bad; 1067 } 1068 (void) nvlist_lookup_nvlist(props, ZPOOL_ROOTFS_PROPS, &nvl); 1069 if (nvl) { 1070 error = nvlist_dup(nvl, &rootprops, KM_SLEEP); 1071 if (error != 0) { 1072 nvlist_free(config); 1073 nvlist_free(props); 1074 return (error); 1075 } 1076 (void) nvlist_remove_all(props, ZPOOL_ROOTFS_PROPS); 1077 } 1078 VERIFY(nvlist_alloc(&zplprops, NV_UNIQUE_NAME, KM_SLEEP) == 0); 1079 error = zfs_fill_zplprops_root(version, rootprops, 1080 zplprops, NULL); 1081 if (error) 1082 goto pool_props_bad; 1083 } 1084 1085 buf = history_str_get(zc); 1086 1087 error = spa_create(zc->zc_name, config, props, buf, zplprops); 1088 1089 /* 1090 * Set the remaining root properties 1091 */ 1092 if (!error && (error = zfs_set_prop_nvlist(zc->zc_name, 1093 ZPROP_SRC_LOCAL, rootprops, NULL)) != 0) 1094 (void) spa_destroy(zc->zc_name); 1095 1096 if (buf != NULL) 1097 history_str_free(buf); 1098 1099 pool_props_bad: 1100 nvlist_free(rootprops); 1101 nvlist_free(zplprops); 1102 nvlist_free(config); 1103 nvlist_free(props); 1104 1105 return (error); 1106 } 1107 1108 static int 1109 zfs_ioc_pool_destroy(zfs_cmd_t *zc) 1110 { 1111 int error; 1112 zfs_log_history(zc); 1113 error = spa_destroy(zc->zc_name); 1114 if (error == 0) 1115 zvol_remove_minors(zc->zc_name); 1116 return (error); 1117 } 1118 1119 static int 1120 zfs_ioc_pool_import(zfs_cmd_t *zc) 1121 { 1122 nvlist_t *config, *props = NULL; 1123 uint64_t guid; 1124 int error; 1125 1126 if ((error = get_nvlist(zc->zc_nvlist_conf, zc->zc_nvlist_conf_size, 1127 zc->zc_iflags, &config)) != 0) 1128 return (error); 1129 1130 if (zc->zc_nvlist_src_size != 0 && (error = 1131 get_nvlist(zc->zc_nvlist_src, zc->zc_nvlist_src_size, 1132 zc->zc_iflags, &props))) { 1133 nvlist_free(config); 1134 return (error); 1135 } 1136 1137 if (nvlist_lookup_uint64(config, ZPOOL_CONFIG_POOL_GUID, &guid) != 0 || 1138 guid != zc->zc_guid) 1139 error = EINVAL; 1140 else if (zc->zc_cookie) 1141 error = spa_import_verbatim(zc->zc_name, config, props); 1142 else 1143 error = spa_import(zc->zc_name, config, props); 1144 1145 if (zc->zc_nvlist_dst != 0) 1146 (void) put_nvlist(zc, config); 1147 1148 nvlist_free(config); 1149 1150 if (props) 1151 nvlist_free(props); 1152 1153 return (error); 1154 } 1155 1156 static int 1157 zfs_ioc_pool_export(zfs_cmd_t *zc) 1158 { 1159 int error; 1160 boolean_t force = (boolean_t)zc->zc_cookie; 1161 boolean_t hardforce = (boolean_t)zc->zc_guid; 1162 1163 zfs_log_history(zc); 1164 error = spa_export(zc->zc_name, NULL, force, hardforce); 1165 if (error == 0) 1166 zvol_remove_minors(zc->zc_name); 1167 return (error); 1168 } 1169 1170 static int 1171 zfs_ioc_pool_configs(zfs_cmd_t *zc) 1172 { 1173 nvlist_t *configs; 1174 int error; 1175 1176 if ((configs = spa_all_configs(&zc->zc_cookie)) == NULL) 1177 return (EEXIST); 1178 1179 error = put_nvlist(zc, configs); 1180 1181 nvlist_free(configs); 1182 1183 return (error); 1184 } 1185 1186 static int 1187 zfs_ioc_pool_stats(zfs_cmd_t *zc) 1188 { 1189 nvlist_t *config; 1190 int error; 1191 int ret = 0; 1192 1193 error = spa_get_stats(zc->zc_name, &config, zc->zc_value, 1194 sizeof (zc->zc_value)); 1195 1196 if (config != NULL) { 1197 ret = put_nvlist(zc, config); 1198 nvlist_free(config); 1199 1200 /* 1201 * The config may be present even if 'error' is non-zero. 1202 * In this case we return success, and preserve the real errno 1203 * in 'zc_cookie'. 1204 */ 1205 zc->zc_cookie = error; 1206 } else { 1207 ret = error; 1208 } 1209 1210 return (ret); 1211 } 1212 1213 /* 1214 * Try to import the given pool, returning pool stats as appropriate so that 1215 * user land knows which devices are available and overall pool health. 1216 */ 1217 static int 1218 zfs_ioc_pool_tryimport(zfs_cmd_t *zc) 1219 { 1220 nvlist_t *tryconfig, *config; 1221 int error; 1222 1223 if ((error = get_nvlist(zc->zc_nvlist_conf, zc->zc_nvlist_conf_size, 1224 zc->zc_iflags, &tryconfig)) != 0) 1225 return (error); 1226 1227 config = spa_tryimport(tryconfig); 1228 1229 nvlist_free(tryconfig); 1230 1231 if (config == NULL) 1232 return (EINVAL); 1233 1234 error = put_nvlist(zc, config); 1235 nvlist_free(config); 1236 1237 return (error); 1238 } 1239 1240 /* 1241 * inputs: 1242 * zc_name name of the pool 1243 * zc_cookie scan func (pool_scan_func_t) 1244 */ 1245 static int 1246 zfs_ioc_pool_scan(zfs_cmd_t *zc) 1247 { 1248 spa_t *spa; 1249 int error; 1250 1251 if ((error = spa_open(zc->zc_name, &spa, FTAG)) != 0) 1252 return (error); 1253 1254 if (zc->zc_cookie == POOL_SCAN_NONE) 1255 error = spa_scan_stop(spa); 1256 else 1257 error = spa_scan(spa, zc->zc_cookie); 1258 1259 spa_close(spa, FTAG); 1260 1261 return (error); 1262 } 1263 1264 static int 1265 zfs_ioc_pool_freeze(zfs_cmd_t *zc) 1266 { 1267 spa_t *spa; 1268 int error; 1269 1270 error = spa_open(zc->zc_name, &spa, FTAG); 1271 if (error == 0) { 1272 spa_freeze(spa); 1273 spa_close(spa, FTAG); 1274 } 1275 return (error); 1276 } 1277 1278 static int 1279 zfs_ioc_pool_upgrade(zfs_cmd_t *zc) 1280 { 1281 spa_t *spa; 1282 int error; 1283 1284 if ((error = spa_open(zc->zc_name, &spa, FTAG)) != 0) 1285 return (error); 1286 1287 if (zc->zc_cookie < spa_version(spa) || zc->zc_cookie > SPA_VERSION) { 1288 spa_close(spa, FTAG); 1289 return (EINVAL); 1290 } 1291 1292 spa_upgrade(spa, zc->zc_cookie); 1293 spa_close(spa, FTAG); 1294 1295 return (error); 1296 } 1297 1298 static int 1299 zfs_ioc_pool_get_history(zfs_cmd_t *zc) 1300 { 1301 spa_t *spa; 1302 char *hist_buf; 1303 uint64_t size; 1304 int error; 1305 1306 if ((size = zc->zc_history_len) == 0) 1307 return (EINVAL); 1308 1309 if ((error = spa_open(zc->zc_name, &spa, FTAG)) != 0) 1310 return (error); 1311 1312 if (spa_version(spa) < SPA_VERSION_ZPOOL_HISTORY) { 1313 spa_close(spa, FTAG); 1314 return (ENOTSUP); 1315 } 1316 1317 hist_buf = kmem_alloc(size, KM_SLEEP); 1318 if ((error = spa_history_get(spa, &zc->zc_history_offset, 1319 &zc->zc_history_len, hist_buf)) == 0) { 1320 error = ddi_copyout(hist_buf, 1321 (void *)(uintptr_t)zc->zc_history, 1322 zc->zc_history_len, zc->zc_iflags); 1323 } 1324 1325 spa_close(spa, FTAG); 1326 kmem_free(hist_buf, size); 1327 return (error); 1328 } 1329 1330 static int 1331 zfs_ioc_dsobj_to_dsname(zfs_cmd_t *zc) 1332 { 1333 int error; 1334 1335 if (error = dsl_dsobj_to_dsname(zc->zc_name, zc->zc_obj, zc->zc_value)) 1336 return (error); 1337 1338 return (0); 1339 } 1340 1341 /* 1342 * inputs: 1343 * zc_name name of filesystem 1344 * zc_obj object to find 1345 * 1346 * outputs: 1347 * zc_value name of object 1348 */ 1349 static int 1350 zfs_ioc_obj_to_path(zfs_cmd_t *zc) 1351 { 1352 objset_t *os; 1353 int error; 1354 1355 /* XXX reading from objset not owned */ 1356 if ((error = dmu_objset_hold(zc->zc_name, FTAG, &os)) != 0) 1357 return (error); 1358 if (dmu_objset_type(os) != DMU_OST_ZFS) { 1359 dmu_objset_rele(os, FTAG); 1360 return (EINVAL); 1361 } 1362 error = zfs_obj_to_path(os, zc->zc_obj, zc->zc_value, 1363 sizeof (zc->zc_value)); 1364 dmu_objset_rele(os, FTAG); 1365 1366 return (error); 1367 } 1368 1369 static int 1370 zfs_ioc_vdev_add(zfs_cmd_t *zc) 1371 { 1372 spa_t *spa; 1373 int error; 1374 nvlist_t *config, **l2cache, **spares; 1375 uint_t nl2cache = 0, nspares = 0; 1376 1377 error = spa_open(zc->zc_name, &spa, FTAG); 1378 if (error != 0) 1379 return (error); 1380 1381 error = get_nvlist(zc->zc_nvlist_conf, zc->zc_nvlist_conf_size, 1382 zc->zc_iflags, &config); 1383 (void) nvlist_lookup_nvlist_array(config, ZPOOL_CONFIG_L2CACHE, 1384 &l2cache, &nl2cache); 1385 1386 (void) nvlist_lookup_nvlist_array(config, ZPOOL_CONFIG_SPARES, 1387 &spares, &nspares); 1388 1389 /* 1390 * A root pool with concatenated devices is not supported. 1391 * Thus, can not add a device to a root pool. 1392 * 1393 * Intent log device can not be added to a rootpool because 1394 * during mountroot, zil is replayed, a seperated log device 1395 * can not be accessed during the mountroot time. 1396 * 1397 * l2cache and spare devices are ok to be added to a rootpool. 1398 */ 1399 if (spa_bootfs(spa) != 0 && nl2cache == 0 && nspares == 0) { 1400 nvlist_free(config); 1401 spa_close(spa, FTAG); 1402 return (EDOM); 1403 } 1404 1405 if (error == 0) { 1406 error = spa_vdev_add(spa, config); 1407 nvlist_free(config); 1408 } 1409 spa_close(spa, FTAG); 1410 return (error); 1411 } 1412 1413 /* 1414 * inputs: 1415 * zc_name name of the pool 1416 * zc_nvlist_conf nvlist of devices to remove 1417 * zc_cookie to stop the remove? 1418 */ 1419 static int 1420 zfs_ioc_vdev_remove(zfs_cmd_t *zc) 1421 { 1422 spa_t *spa; 1423 int error; 1424 1425 error = spa_open(zc->zc_name, &spa, FTAG); 1426 if (error != 0) 1427 return (error); 1428 error = spa_vdev_remove(spa, zc->zc_guid, B_FALSE); 1429 spa_close(spa, FTAG); 1430 return (error); 1431 } 1432 1433 static int 1434 zfs_ioc_vdev_set_state(zfs_cmd_t *zc) 1435 { 1436 spa_t *spa; 1437 int error; 1438 vdev_state_t newstate = VDEV_STATE_UNKNOWN; 1439 1440 if ((error = spa_open(zc->zc_name, &spa, FTAG)) != 0) 1441 return (error); 1442 switch (zc->zc_cookie) { 1443 case VDEV_STATE_ONLINE: 1444 error = vdev_online(spa, zc->zc_guid, zc->zc_obj, &newstate); 1445 break; 1446 1447 case VDEV_STATE_OFFLINE: 1448 error = vdev_offline(spa, zc->zc_guid, zc->zc_obj); 1449 break; 1450 1451 case VDEV_STATE_FAULTED: 1452 if (zc->zc_obj != VDEV_AUX_ERR_EXCEEDED && 1453 zc->zc_obj != VDEV_AUX_EXTERNAL) 1454 zc->zc_obj = VDEV_AUX_ERR_EXCEEDED; 1455 1456 error = vdev_fault(spa, zc->zc_guid, zc->zc_obj); 1457 break; 1458 1459 case VDEV_STATE_DEGRADED: 1460 if (zc->zc_obj != VDEV_AUX_ERR_EXCEEDED && 1461 zc->zc_obj != VDEV_AUX_EXTERNAL) 1462 zc->zc_obj = VDEV_AUX_ERR_EXCEEDED; 1463 1464 error = vdev_degrade(spa, zc->zc_guid, zc->zc_obj); 1465 break; 1466 1467 default: 1468 error = EINVAL; 1469 } 1470 zc->zc_cookie = newstate; 1471 spa_close(spa, FTAG); 1472 return (error); 1473 } 1474 1475 static int 1476 zfs_ioc_vdev_attach(zfs_cmd_t *zc) 1477 { 1478 spa_t *spa; 1479 int replacing = zc->zc_cookie; 1480 nvlist_t *config; 1481 int error; 1482 1483 if ((error = spa_open(zc->zc_name, &spa, FTAG)) != 0) 1484 return (error); 1485 1486 if ((error = get_nvlist(zc->zc_nvlist_conf, zc->zc_nvlist_conf_size, 1487 zc->zc_iflags, &config)) == 0) { 1488 error = spa_vdev_attach(spa, zc->zc_guid, config, replacing); 1489 nvlist_free(config); 1490 } 1491 1492 spa_close(spa, FTAG); 1493 return (error); 1494 } 1495 1496 static int 1497 zfs_ioc_vdev_detach(zfs_cmd_t *zc) 1498 { 1499 spa_t *spa; 1500 int error; 1501 1502 if ((error = spa_open(zc->zc_name, &spa, FTAG)) != 0) 1503 return (error); 1504 1505 error = spa_vdev_detach(spa, zc->zc_guid, 0, B_FALSE); 1506 1507 spa_close(spa, FTAG); 1508 return (error); 1509 } 1510 1511 static int 1512 zfs_ioc_vdev_split(zfs_cmd_t *zc) 1513 { 1514 spa_t *spa; 1515 nvlist_t *config, *props = NULL; 1516 int error; 1517 boolean_t exp = !!(zc->zc_cookie & ZPOOL_EXPORT_AFTER_SPLIT); 1518 1519 if ((error = spa_open(zc->zc_name, &spa, FTAG)) != 0) 1520 return (error); 1521 1522 if (error = get_nvlist(zc->zc_nvlist_conf, zc->zc_nvlist_conf_size, 1523 zc->zc_iflags, &config)) { 1524 spa_close(spa, FTAG); 1525 return (error); 1526 } 1527 1528 if (zc->zc_nvlist_src_size != 0 && (error = 1529 get_nvlist(zc->zc_nvlist_src, zc->zc_nvlist_src_size, 1530 zc->zc_iflags, &props))) { 1531 spa_close(spa, FTAG); 1532 nvlist_free(config); 1533 return (error); 1534 } 1535 1536 error = spa_vdev_split_mirror(spa, zc->zc_string, config, props, exp); 1537 1538 spa_close(spa, FTAG); 1539 1540 nvlist_free(config); 1541 nvlist_free(props); 1542 1543 return (error); 1544 } 1545 1546 static int 1547 zfs_ioc_vdev_setpath(zfs_cmd_t *zc) 1548 { 1549 spa_t *spa; 1550 char *path = zc->zc_value; 1551 uint64_t guid = zc->zc_guid; 1552 int error; 1553 1554 error = spa_open(zc->zc_name, &spa, FTAG); 1555 if (error != 0) 1556 return (error); 1557 1558 error = spa_vdev_setpath(spa, guid, path); 1559 spa_close(spa, FTAG); 1560 return (error); 1561 } 1562 1563 static int 1564 zfs_ioc_vdev_setfru(zfs_cmd_t *zc) 1565 { 1566 spa_t *spa; 1567 char *fru = zc->zc_value; 1568 uint64_t guid = zc->zc_guid; 1569 int error; 1570 1571 error = spa_open(zc->zc_name, &spa, FTAG); 1572 if (error != 0) 1573 return (error); 1574 1575 error = spa_vdev_setfru(spa, guid, fru); 1576 spa_close(spa, FTAG); 1577 return (error); 1578 } 1579 1580 /* 1581 * inputs: 1582 * zc_name name of filesystem 1583 * zc_nvlist_dst_size size of buffer for property nvlist 1584 * 1585 * outputs: 1586 * zc_objset_stats stats 1587 * zc_nvlist_dst property nvlist 1588 * zc_nvlist_dst_size size of property nvlist 1589 */ 1590 static int 1591 zfs_ioc_objset_stats(zfs_cmd_t *zc) 1592 { 1593 objset_t *os = NULL; 1594 int error; 1595 nvlist_t *nv; 1596 1597 if (error = dmu_objset_hold(zc->zc_name, FTAG, &os)) 1598 return (error); 1599 1600 dmu_objset_fast_stat(os, &zc->zc_objset_stats); 1601 1602 if (zc->zc_nvlist_dst != 0 && 1603 (error = dsl_prop_get_all(os, &nv)) == 0) { 1604 dmu_objset_stats(os, nv); 1605 /* 1606 * NB: zvol_get_stats() will read the objset contents, 1607 * which we aren't supposed to do with a 1608 * DS_MODE_USER hold, because it could be 1609 * inconsistent. So this is a bit of a workaround... 1610 * XXX reading with out owning 1611 */ 1612 if (!zc->zc_objset_stats.dds_inconsistent) { 1613 if (dmu_objset_type(os) == DMU_OST_ZVOL) 1614 VERIFY(zvol_get_stats(os, nv) == 0); 1615 } 1616 error = put_nvlist(zc, nv); 1617 nvlist_free(nv); 1618 } 1619 1620 dmu_objset_rele(os, FTAG); 1621 return (error); 1622 } 1623 1624 /* 1625 * inputs: 1626 * zc_name name of filesystem 1627 * zc_nvlist_dst_size size of buffer for property nvlist 1628 * 1629 * outputs: 1630 * zc_nvlist_dst received property nvlist 1631 * zc_nvlist_dst_size size of received property nvlist 1632 * 1633 * Gets received properties (distinct from local properties on or after 1634 * SPA_VERSION_RECVD_PROPS) for callers who want to differentiate received from 1635 * local property values. 1636 */ 1637 static int 1638 zfs_ioc_objset_recvd_props(zfs_cmd_t *zc) 1639 { 1640 objset_t *os = NULL; 1641 int error; 1642 nvlist_t *nv; 1643 1644 if (error = dmu_objset_hold(zc->zc_name, FTAG, &os)) 1645 return (error); 1646 1647 /* 1648 * Without this check, we would return local property values if the 1649 * caller has not already received properties on or after 1650 * SPA_VERSION_RECVD_PROPS. 1651 */ 1652 if (!dsl_prop_get_hasrecvd(os)) { 1653 dmu_objset_rele(os, FTAG); 1654 return (ENOTSUP); 1655 } 1656 1657 if (zc->zc_nvlist_dst != 0 && 1658 (error = dsl_prop_get_received(os, &nv)) == 0) { 1659 error = put_nvlist(zc, nv); 1660 nvlist_free(nv); 1661 } 1662 1663 dmu_objset_rele(os, FTAG); 1664 return (error); 1665 } 1666 1667 static int 1668 nvl_add_zplprop(objset_t *os, nvlist_t *props, zfs_prop_t prop) 1669 { 1670 uint64_t value; 1671 int error; 1672 1673 /* 1674 * zfs_get_zplprop() will either find a value or give us 1675 * the default value (if there is one). 1676 */ 1677 if ((error = zfs_get_zplprop(os, prop, &value)) != 0) 1678 return (error); 1679 VERIFY(nvlist_add_uint64(props, zfs_prop_to_name(prop), value) == 0); 1680 return (0); 1681 } 1682 1683 /* 1684 * inputs: 1685 * zc_name name of filesystem 1686 * zc_nvlist_dst_size size of buffer for zpl property nvlist 1687 * 1688 * outputs: 1689 * zc_nvlist_dst zpl property nvlist 1690 * zc_nvlist_dst_size size of zpl property nvlist 1691 */ 1692 static int 1693 zfs_ioc_objset_zplprops(zfs_cmd_t *zc) 1694 { 1695 objset_t *os; 1696 int err; 1697 1698 /* XXX reading without owning */ 1699 if (err = dmu_objset_hold(zc->zc_name, FTAG, &os)) 1700 return (err); 1701 1702 dmu_objset_fast_stat(os, &zc->zc_objset_stats); 1703 1704 /* 1705 * NB: nvl_add_zplprop() will read the objset contents, 1706 * which we aren't supposed to do with a DS_MODE_USER 1707 * hold, because it could be inconsistent. 1708 */ 1709 if (zc->zc_nvlist_dst != NULL && 1710 !zc->zc_objset_stats.dds_inconsistent && 1711 dmu_objset_type(os) == DMU_OST_ZFS) { 1712 nvlist_t *nv; 1713 1714 VERIFY(nvlist_alloc(&nv, NV_UNIQUE_NAME, KM_SLEEP) == 0); 1715 if ((err = nvl_add_zplprop(os, nv, ZFS_PROP_VERSION)) == 0 && 1716 (err = nvl_add_zplprop(os, nv, ZFS_PROP_NORMALIZE)) == 0 && 1717 (err = nvl_add_zplprop(os, nv, ZFS_PROP_UTF8ONLY)) == 0 && 1718 (err = nvl_add_zplprop(os, nv, ZFS_PROP_CASE)) == 0) 1719 err = put_nvlist(zc, nv); 1720 nvlist_free(nv); 1721 } else { 1722 err = ENOENT; 1723 } 1724 dmu_objset_rele(os, FTAG); 1725 return (err); 1726 } 1727 1728 static boolean_t 1729 dataset_name_hidden(const char *name) 1730 { 1731 /* 1732 * Skip over datasets that are not visible in this zone, 1733 * internal datasets (which have a $ in their name), and 1734 * temporary datasets (which have a % in their name). 1735 */ 1736 if (strchr(name, '$') != NULL) 1737 return (B_TRUE); 1738 if (strchr(name, '%') != NULL) 1739 return (B_TRUE); 1740 if (!INGLOBALZONE(curproc) && !zone_dataset_visible(name, NULL)) 1741 return (B_TRUE); 1742 return (B_FALSE); 1743 } 1744 1745 /* 1746 * inputs: 1747 * zc_name name of filesystem 1748 * zc_cookie zap cursor 1749 * zc_nvlist_dst_size size of buffer for property nvlist 1750 * 1751 * outputs: 1752 * zc_name name of next filesystem 1753 * zc_cookie zap cursor 1754 * zc_objset_stats stats 1755 * zc_nvlist_dst property nvlist 1756 * zc_nvlist_dst_size size of property nvlist 1757 */ 1758 static int 1759 zfs_ioc_dataset_list_next(zfs_cmd_t *zc) 1760 { 1761 objset_t *os; 1762 int error; 1763 char *p; 1764 size_t orig_len = strlen(zc->zc_name); 1765 1766 top: 1767 if (error = dmu_objset_hold(zc->zc_name, FTAG, &os)) { 1768 if (error == ENOENT) 1769 error = ESRCH; 1770 return (error); 1771 } 1772 1773 p = strrchr(zc->zc_name, '/'); 1774 if (p == NULL || p[1] != '\0') 1775 (void) strlcat(zc->zc_name, "/", sizeof (zc->zc_name)); 1776 p = zc->zc_name + strlen(zc->zc_name); 1777 1778 /* 1779 * Pre-fetch the datasets. dmu_objset_prefetch() always returns 0 1780 * but is not declared void because its called by dmu_objset_find(). 1781 */ 1782 if (zc->zc_cookie == 0) { 1783 uint64_t cookie = 0; 1784 int len = sizeof (zc->zc_name) - (p - zc->zc_name); 1785 1786 while (dmu_dir_list_next(os, len, p, NULL, &cookie) == 0) 1787 (void) dmu_objset_prefetch(p, NULL); 1788 } 1789 1790 do { 1791 error = dmu_dir_list_next(os, 1792 sizeof (zc->zc_name) - (p - zc->zc_name), p, 1793 NULL, &zc->zc_cookie); 1794 if (error == ENOENT) 1795 error = ESRCH; 1796 } while (error == 0 && dataset_name_hidden(zc->zc_name) && 1797 !(zc->zc_iflags & FKIOCTL)); 1798 dmu_objset_rele(os, FTAG); 1799 1800 /* 1801 * If it's an internal dataset (ie. with a '$' in its name), 1802 * don't try to get stats for it, otherwise we'll return ENOENT. 1803 */ 1804 if (error == 0 && strchr(zc->zc_name, '$') == NULL) { 1805 error = zfs_ioc_objset_stats(zc); /* fill in the stats */ 1806 if (error == ENOENT) { 1807 /* We lost a race with destroy, get the next one. */ 1808 zc->zc_name[orig_len] = '\0'; 1809 goto top; 1810 } 1811 } 1812 return (error); 1813 } 1814 1815 /* 1816 * inputs: 1817 * zc_name name of filesystem 1818 * zc_cookie zap cursor 1819 * zc_nvlist_dst_size size of buffer for property nvlist 1820 * 1821 * outputs: 1822 * zc_name name of next snapshot 1823 * zc_objset_stats stats 1824 * zc_nvlist_dst property nvlist 1825 * zc_nvlist_dst_size size of property nvlist 1826 */ 1827 static int 1828 zfs_ioc_snapshot_list_next(zfs_cmd_t *zc) 1829 { 1830 objset_t *os; 1831 int error; 1832 1833 top: 1834 if (zc->zc_cookie == 0) 1835 (void) dmu_objset_find(zc->zc_name, dmu_objset_prefetch, 1836 NULL, DS_FIND_SNAPSHOTS); 1837 1838 error = dmu_objset_hold(zc->zc_name, FTAG, &os); 1839 if (error) 1840 return (error == ENOENT ? ESRCH : error); 1841 1842 /* 1843 * A dataset name of maximum length cannot have any snapshots, 1844 * so exit immediately. 1845 */ 1846 if (strlcat(zc->zc_name, "@", sizeof (zc->zc_name)) >= MAXNAMELEN) { 1847 dmu_objset_rele(os, FTAG); 1848 return (ESRCH); 1849 } 1850 1851 error = dmu_snapshot_list_next(os, 1852 sizeof (zc->zc_name) - strlen(zc->zc_name), 1853 zc->zc_name + strlen(zc->zc_name), NULL, &zc->zc_cookie, NULL); 1854 dmu_objset_rele(os, FTAG); 1855 if (error == 0) { 1856 error = zfs_ioc_objset_stats(zc); /* fill in the stats */ 1857 if (error == ENOENT) { 1858 /* We lost a race with destroy, get the next one. */ 1859 *strchr(zc->zc_name, '@') = '\0'; 1860 goto top; 1861 } 1862 } else if (error == ENOENT) { 1863 error = ESRCH; 1864 } 1865 1866 /* if we failed, undo the @ that we tacked on to zc_name */ 1867 if (error) 1868 *strchr(zc->zc_name, '@') = '\0'; 1869 return (error); 1870 } 1871 1872 static int 1873 zfs_prop_set_userquota(const char *dsname, nvpair_t *pair) 1874 { 1875 const char *propname = nvpair_name(pair); 1876 uint64_t *valary; 1877 unsigned int vallen; 1878 const char *domain; 1879 char *dash; 1880 zfs_userquota_prop_t type; 1881 uint64_t rid; 1882 uint64_t quota; 1883 zfsvfs_t *zfsvfs; 1884 int err; 1885 1886 if (nvpair_type(pair) == DATA_TYPE_NVLIST) { 1887 nvlist_t *attrs; 1888 VERIFY(nvpair_value_nvlist(pair, &attrs) == 0); 1889 if (nvlist_lookup_nvpair(attrs, ZPROP_VALUE, 1890 &pair) != 0) 1891 return (EINVAL); 1892 } 1893 1894 /* 1895 * A correctly constructed propname is encoded as 1896 * userquota@<rid>-<domain>. 1897 */ 1898 if ((dash = strchr(propname, '-')) == NULL || 1899 nvpair_value_uint64_array(pair, &valary, &vallen) != 0 || 1900 vallen != 3) 1901 return (EINVAL); 1902 1903 domain = dash + 1; 1904 type = valary[0]; 1905 rid = valary[1]; 1906 quota = valary[2]; 1907 1908 err = zfsvfs_hold(dsname, FTAG, &zfsvfs); 1909 if (err == 0) { 1910 err = zfs_set_userquota(zfsvfs, type, domain, rid, quota); 1911 zfsvfs_rele(zfsvfs, FTAG); 1912 } 1913 1914 return (err); 1915 } 1916 1917 /* 1918 * If the named property is one that has a special function to set its value, 1919 * return 0 on success and a positive error code on failure; otherwise if it is 1920 * not one of the special properties handled by this function, return -1. 1921 * 1922 * XXX: It would be better for callers of the property interface if we handled 1923 * these special cases in dsl_prop.c (in the dsl layer). 1924 */ 1925 static int 1926 zfs_prop_set_special(const char *dsname, zprop_source_t source, 1927 nvpair_t *pair) 1928 { 1929 const char *propname = nvpair_name(pair); 1930 zfs_prop_t prop = zfs_name_to_prop(propname); 1931 uint64_t intval; 1932 int err; 1933 1934 if (prop == ZPROP_INVAL) { 1935 if (zfs_prop_userquota(propname)) 1936 return (zfs_prop_set_userquota(dsname, pair)); 1937 return (-1); 1938 } 1939 1940 if (nvpair_type(pair) == DATA_TYPE_NVLIST) { 1941 nvlist_t *attrs; 1942 VERIFY(nvpair_value_nvlist(pair, &attrs) == 0); 1943 VERIFY(nvlist_lookup_nvpair(attrs, ZPROP_VALUE, 1944 &pair) == 0); 1945 } 1946 1947 if (zfs_prop_get_type(prop) == PROP_TYPE_STRING) 1948 return (-1); 1949 1950 VERIFY(0 == nvpair_value_uint64(pair, &intval)); 1951 1952 switch (prop) { 1953 case ZFS_PROP_QUOTA: 1954 err = dsl_dir_set_quota(dsname, source, intval); 1955 break; 1956 case ZFS_PROP_REFQUOTA: 1957 err = dsl_dataset_set_quota(dsname, source, intval); 1958 break; 1959 case ZFS_PROP_RESERVATION: 1960 err = dsl_dir_set_reservation(dsname, source, intval); 1961 break; 1962 case ZFS_PROP_REFRESERVATION: 1963 err = dsl_dataset_set_reservation(dsname, source, intval); 1964 break; 1965 case ZFS_PROP_VOLSIZE: 1966 err = zvol_set_volsize(dsname, ddi_driver_major(zfs_dip), 1967 intval); 1968 break; 1969 case ZFS_PROP_VERSION: 1970 { 1971 zfsvfs_t *zfsvfs; 1972 1973 if ((err = zfsvfs_hold(dsname, FTAG, &zfsvfs)) != 0) 1974 break; 1975 1976 err = zfs_set_version(zfsvfs, intval); 1977 zfsvfs_rele(zfsvfs, FTAG); 1978 1979 if (err == 0 && intval >= ZPL_VERSION_USERSPACE) { 1980 zfs_cmd_t *zc; 1981 1982 zc = kmem_zalloc(sizeof (zfs_cmd_t), KM_SLEEP); 1983 (void) strcpy(zc->zc_name, dsname); 1984 (void) zfs_ioc_userspace_upgrade(zc); 1985 kmem_free(zc, sizeof (zfs_cmd_t)); 1986 } 1987 break; 1988 } 1989 1990 default: 1991 err = -1; 1992 } 1993 1994 return (err); 1995 } 1996 1997 /* 1998 * This function is best effort. If it fails to set any of the given properties, 1999 * it continues to set as many as it can and returns the first error 2000 * encountered. If the caller provides a non-NULL errlist, it also gives the 2001 * complete list of names of all the properties it failed to set along with the 2002 * corresponding error numbers. The caller is responsible for freeing the 2003 * returned errlist. 2004 * 2005 * If every property is set successfully, zero is returned and the list pointed 2006 * at by errlist is NULL. 2007 */ 2008 int 2009 zfs_set_prop_nvlist(const char *dsname, zprop_source_t source, nvlist_t *nvl, 2010 nvlist_t **errlist) 2011 { 2012 nvpair_t *pair; 2013 nvpair_t *propval; 2014 int rv = 0; 2015 uint64_t intval; 2016 char *strval; 2017 nvlist_t *genericnvl; 2018 nvlist_t *errors; 2019 nvlist_t *retrynvl; 2020 2021 VERIFY(nvlist_alloc(&genericnvl, NV_UNIQUE_NAME, KM_SLEEP) == 0); 2022 VERIFY(nvlist_alloc(&errors, NV_UNIQUE_NAME, KM_SLEEP) == 0); 2023 VERIFY(nvlist_alloc(&retrynvl, NV_UNIQUE_NAME, KM_SLEEP) == 0); 2024 2025 retry: 2026 pair = NULL; 2027 while ((pair = nvlist_next_nvpair(nvl, pair)) != NULL) { 2028 const char *propname = nvpair_name(pair); 2029 zfs_prop_t prop = zfs_name_to_prop(propname); 2030 int err = 0; 2031 2032 /* decode the property value */ 2033 propval = pair; 2034 if (nvpair_type(pair) == DATA_TYPE_NVLIST) { 2035 nvlist_t *attrs; 2036 VERIFY(nvpair_value_nvlist(pair, &attrs) == 0); 2037 if (nvlist_lookup_nvpair(attrs, ZPROP_VALUE, 2038 &propval) != 0) 2039 err = EINVAL; 2040 } 2041 2042 /* Validate value type */ 2043 if (err == 0 && prop == ZPROP_INVAL) { 2044 if (zfs_prop_user(propname)) { 2045 if (nvpair_type(propval) != DATA_TYPE_STRING) 2046 err = EINVAL; 2047 } else if (zfs_prop_userquota(propname)) { 2048 if (nvpair_type(propval) != 2049 DATA_TYPE_UINT64_ARRAY) 2050 err = EINVAL; 2051 } 2052 } else if (err == 0) { 2053 if (nvpair_type(propval) == DATA_TYPE_STRING) { 2054 if (zfs_prop_get_type(prop) != PROP_TYPE_STRING) 2055 err = EINVAL; 2056 } else if (nvpair_type(propval) == DATA_TYPE_UINT64) { 2057 const char *unused; 2058 2059 VERIFY(nvpair_value_uint64(propval, 2060 &intval) == 0); 2061 2062 switch (zfs_prop_get_type(prop)) { 2063 case PROP_TYPE_NUMBER: 2064 break; 2065 case PROP_TYPE_STRING: 2066 err = EINVAL; 2067 break; 2068 case PROP_TYPE_INDEX: 2069 if (zfs_prop_index_to_string(prop, 2070 intval, &unused) != 0) 2071 err = EINVAL; 2072 break; 2073 default: 2074 cmn_err(CE_PANIC, 2075 "unknown property type"); 2076 } 2077 } else { 2078 err = EINVAL; 2079 } 2080 } 2081 2082 /* Validate permissions */ 2083 if (err == 0) 2084 err = zfs_check_settable(dsname, pair, CRED()); 2085 2086 if (err == 0) { 2087 err = zfs_prop_set_special(dsname, source, pair); 2088 if (err == -1) { 2089 /* 2090 * For better performance we build up a list of 2091 * properties to set in a single transaction. 2092 */ 2093 err = nvlist_add_nvpair(genericnvl, pair); 2094 } else if (err != 0 && nvl != retrynvl) { 2095 /* 2096 * This may be a spurious error caused by 2097 * receiving quota and reservation out of order. 2098 * Try again in a second pass. 2099 */ 2100 err = nvlist_add_nvpair(retrynvl, pair); 2101 } 2102 } 2103 2104 if (err != 0) 2105 VERIFY(nvlist_add_int32(errors, propname, err) == 0); 2106 } 2107 2108 if (nvl != retrynvl && !nvlist_empty(retrynvl)) { 2109 nvl = retrynvl; 2110 goto retry; 2111 } 2112 2113 if (!nvlist_empty(genericnvl) && 2114 dsl_props_set(dsname, source, genericnvl) != 0) { 2115 /* 2116 * If this fails, we still want to set as many properties as we 2117 * can, so try setting them individually. 2118 */ 2119 pair = NULL; 2120 while ((pair = nvlist_next_nvpair(genericnvl, pair)) != NULL) { 2121 const char *propname = nvpair_name(pair); 2122 int err = 0; 2123 2124 propval = pair; 2125 if (nvpair_type(pair) == DATA_TYPE_NVLIST) { 2126 nvlist_t *attrs; 2127 VERIFY(nvpair_value_nvlist(pair, &attrs) == 0); 2128 VERIFY(nvlist_lookup_nvpair(attrs, ZPROP_VALUE, 2129 &propval) == 0); 2130 } 2131 2132 if (nvpair_type(propval) == DATA_TYPE_STRING) { 2133 VERIFY(nvpair_value_string(propval, 2134 &strval) == 0); 2135 err = dsl_prop_set(dsname, propname, source, 1, 2136 strlen(strval) + 1, strval); 2137 } else { 2138 VERIFY(nvpair_value_uint64(propval, 2139 &intval) == 0); 2140 err = dsl_prop_set(dsname, propname, source, 8, 2141 1, &intval); 2142 } 2143 2144 if (err != 0) { 2145 VERIFY(nvlist_add_int32(errors, propname, 2146 err) == 0); 2147 } 2148 } 2149 } 2150 nvlist_free(genericnvl); 2151 nvlist_free(retrynvl); 2152 2153 if ((pair = nvlist_next_nvpair(errors, NULL)) == NULL) { 2154 nvlist_free(errors); 2155 errors = NULL; 2156 } else { 2157 VERIFY(nvpair_value_int32(pair, &rv) == 0); 2158 } 2159 2160 if (errlist == NULL) 2161 nvlist_free(errors); 2162 else 2163 *errlist = errors; 2164 2165 return (rv); 2166 } 2167 2168 /* 2169 * Check that all the properties are valid user properties. 2170 */ 2171 static int 2172 zfs_check_userprops(char *fsname, nvlist_t *nvl) 2173 { 2174 nvpair_t *pair = NULL; 2175 int error = 0; 2176 2177 while ((pair = nvlist_next_nvpair(nvl, pair)) != NULL) { 2178 const char *propname = nvpair_name(pair); 2179 char *valstr; 2180 2181 if (!zfs_prop_user(propname) || 2182 nvpair_type(pair) != DATA_TYPE_STRING) 2183 return (EINVAL); 2184 2185 if (error = zfs_secpolicy_write_perms(fsname, 2186 ZFS_DELEG_PERM_USERPROP, CRED())) 2187 return (error); 2188 2189 if (strlen(propname) >= ZAP_MAXNAMELEN) 2190 return (ENAMETOOLONG); 2191 2192 VERIFY(nvpair_value_string(pair, &valstr) == 0); 2193 if (strlen(valstr) >= ZAP_MAXVALUELEN) 2194 return (E2BIG); 2195 } 2196 return (0); 2197 } 2198 2199 static void 2200 props_skip(nvlist_t *props, nvlist_t *skipped, nvlist_t **newprops) 2201 { 2202 nvpair_t *pair; 2203 2204 VERIFY(nvlist_alloc(newprops, NV_UNIQUE_NAME, KM_SLEEP) == 0); 2205 2206 pair = NULL; 2207 while ((pair = nvlist_next_nvpair(props, pair)) != NULL) { 2208 if (nvlist_exists(skipped, nvpair_name(pair))) 2209 continue; 2210 2211 VERIFY(nvlist_add_nvpair(*newprops, pair) == 0); 2212 } 2213 } 2214 2215 static int 2216 clear_received_props(objset_t *os, const char *fs, nvlist_t *props, 2217 nvlist_t *skipped) 2218 { 2219 int err = 0; 2220 nvlist_t *cleared_props = NULL; 2221 props_skip(props, skipped, &cleared_props); 2222 if (!nvlist_empty(cleared_props)) { 2223 /* 2224 * Acts on local properties until the dataset has received 2225 * properties at least once on or after SPA_VERSION_RECVD_PROPS. 2226 */ 2227 zprop_source_t flags = (ZPROP_SRC_NONE | 2228 (dsl_prop_get_hasrecvd(os) ? ZPROP_SRC_RECEIVED : 0)); 2229 err = zfs_set_prop_nvlist(fs, flags, cleared_props, NULL); 2230 } 2231 nvlist_free(cleared_props); 2232 return (err); 2233 } 2234 2235 /* 2236 * inputs: 2237 * zc_name name of filesystem 2238 * zc_value name of property to set 2239 * zc_nvlist_src{_size} nvlist of properties to apply 2240 * zc_cookie received properties flag 2241 * 2242 * outputs: 2243 * zc_nvlist_dst{_size} error for each unapplied received property 2244 */ 2245 static int 2246 zfs_ioc_set_prop(zfs_cmd_t *zc) 2247 { 2248 nvlist_t *nvl; 2249 boolean_t received = zc->zc_cookie; 2250 zprop_source_t source = (received ? ZPROP_SRC_RECEIVED : 2251 ZPROP_SRC_LOCAL); 2252 nvlist_t *errors = NULL; 2253 int error; 2254 2255 if ((error = get_nvlist(zc->zc_nvlist_src, zc->zc_nvlist_src_size, 2256 zc->zc_iflags, &nvl)) != 0) 2257 return (error); 2258 2259 if (received) { 2260 nvlist_t *origprops; 2261 objset_t *os; 2262 2263 if (dmu_objset_hold(zc->zc_name, FTAG, &os) == 0) { 2264 if (dsl_prop_get_received(os, &origprops) == 0) { 2265 (void) clear_received_props(os, 2266 zc->zc_name, origprops, nvl); 2267 nvlist_free(origprops); 2268 } 2269 2270 dsl_prop_set_hasrecvd(os); 2271 dmu_objset_rele(os, FTAG); 2272 } 2273 } 2274 2275 error = zfs_set_prop_nvlist(zc->zc_name, source, nvl, &errors); 2276 2277 if (zc->zc_nvlist_dst != NULL && errors != NULL) { 2278 (void) put_nvlist(zc, errors); 2279 } 2280 2281 nvlist_free(errors); 2282 nvlist_free(nvl); 2283 return (error); 2284 } 2285 2286 /* 2287 * inputs: 2288 * zc_name name of filesystem 2289 * zc_value name of property to inherit 2290 * zc_cookie revert to received value if TRUE 2291 * 2292 * outputs: none 2293 */ 2294 static int 2295 zfs_ioc_inherit_prop(zfs_cmd_t *zc) 2296 { 2297 const char *propname = zc->zc_value; 2298 zfs_prop_t prop = zfs_name_to_prop(propname); 2299 boolean_t received = zc->zc_cookie; 2300 zprop_source_t source = (received 2301 ? ZPROP_SRC_NONE /* revert to received value, if any */ 2302 : ZPROP_SRC_INHERITED); /* explicitly inherit */ 2303 2304 if (received) { 2305 nvlist_t *dummy; 2306 nvpair_t *pair; 2307 zprop_type_t type; 2308 int err; 2309 2310 /* 2311 * zfs_prop_set_special() expects properties in the form of an 2312 * nvpair with type info. 2313 */ 2314 if (prop == ZPROP_INVAL) { 2315 if (!zfs_prop_user(propname)) 2316 return (EINVAL); 2317 2318 type = PROP_TYPE_STRING; 2319 } else if (prop == ZFS_PROP_VOLSIZE || 2320 prop == ZFS_PROP_VERSION) { 2321 return (EINVAL); 2322 } else { 2323 type = zfs_prop_get_type(prop); 2324 } 2325 2326 VERIFY(nvlist_alloc(&dummy, NV_UNIQUE_NAME, KM_SLEEP) == 0); 2327 2328 switch (type) { 2329 case PROP_TYPE_STRING: 2330 VERIFY(0 == nvlist_add_string(dummy, propname, "")); 2331 break; 2332 case PROP_TYPE_NUMBER: 2333 case PROP_TYPE_INDEX: 2334 VERIFY(0 == nvlist_add_uint64(dummy, propname, 0)); 2335 break; 2336 default: 2337 nvlist_free(dummy); 2338 return (EINVAL); 2339 } 2340 2341 pair = nvlist_next_nvpair(dummy, NULL); 2342 err = zfs_prop_set_special(zc->zc_name, source, pair); 2343 nvlist_free(dummy); 2344 if (err != -1) 2345 return (err); /* special property already handled */ 2346 } else { 2347 /* 2348 * Only check this in the non-received case. We want to allow 2349 * 'inherit -S' to revert non-inheritable properties like quota 2350 * and reservation to the received or default values even though 2351 * they are not considered inheritable. 2352 */ 2353 if (prop != ZPROP_INVAL && !zfs_prop_inheritable(prop)) 2354 return (EINVAL); 2355 } 2356 2357 /* the property name has been validated by zfs_secpolicy_inherit() */ 2358 return (dsl_prop_set(zc->zc_name, zc->zc_value, source, 0, 0, NULL)); 2359 } 2360 2361 static int 2362 zfs_ioc_pool_set_props(zfs_cmd_t *zc) 2363 { 2364 nvlist_t *props; 2365 spa_t *spa; 2366 int error; 2367 nvpair_t *pair; 2368 2369 if (error = get_nvlist(zc->zc_nvlist_src, zc->zc_nvlist_src_size, 2370 zc->zc_iflags, &props)) 2371 return (error); 2372 2373 /* 2374 * If the only property is the configfile, then just do a spa_lookup() 2375 * to handle the faulted case. 2376 */ 2377 pair = nvlist_next_nvpair(props, NULL); 2378 if (pair != NULL && strcmp(nvpair_name(pair), 2379 zpool_prop_to_name(ZPOOL_PROP_CACHEFILE)) == 0 && 2380 nvlist_next_nvpair(props, pair) == NULL) { 2381 mutex_enter(&spa_namespace_lock); 2382 if ((spa = spa_lookup(zc->zc_name)) != NULL) { 2383 spa_configfile_set(spa, props, B_FALSE); 2384 spa_config_sync(spa, B_FALSE, B_TRUE); 2385 } 2386 mutex_exit(&spa_namespace_lock); 2387 if (spa != NULL) { 2388 nvlist_free(props); 2389 return (0); 2390 } 2391 } 2392 2393 if ((error = spa_open(zc->zc_name, &spa, FTAG)) != 0) { 2394 nvlist_free(props); 2395 return (error); 2396 } 2397 2398 error = spa_prop_set(spa, props); 2399 2400 nvlist_free(props); 2401 spa_close(spa, FTAG); 2402 2403 return (error); 2404 } 2405 2406 static int 2407 zfs_ioc_pool_get_props(zfs_cmd_t *zc) 2408 { 2409 spa_t *spa; 2410 int error; 2411 nvlist_t *nvp = NULL; 2412 2413 if ((error = spa_open(zc->zc_name, &spa, FTAG)) != 0) { 2414 /* 2415 * If the pool is faulted, there may be properties we can still 2416 * get (such as altroot and cachefile), so attempt to get them 2417 * anyway. 2418 */ 2419 mutex_enter(&spa_namespace_lock); 2420 if ((spa = spa_lookup(zc->zc_name)) != NULL) 2421 error = spa_prop_get(spa, &nvp); 2422 mutex_exit(&spa_namespace_lock); 2423 } else { 2424 error = spa_prop_get(spa, &nvp); 2425 spa_close(spa, FTAG); 2426 } 2427 2428 if (error == 0 && zc->zc_nvlist_dst != NULL) 2429 error = put_nvlist(zc, nvp); 2430 else 2431 error = EFAULT; 2432 2433 nvlist_free(nvp); 2434 return (error); 2435 } 2436 2437 /* 2438 * inputs: 2439 * zc_name name of filesystem 2440 * zc_nvlist_src{_size} nvlist of delegated permissions 2441 * zc_perm_action allow/unallow flag 2442 * 2443 * outputs: none 2444 */ 2445 static int 2446 zfs_ioc_set_fsacl(zfs_cmd_t *zc) 2447 { 2448 int error; 2449 nvlist_t *fsaclnv = NULL; 2450 2451 if ((error = get_nvlist(zc->zc_nvlist_src, zc->zc_nvlist_src_size, 2452 zc->zc_iflags, &fsaclnv)) != 0) 2453 return (error); 2454 2455 /* 2456 * Verify nvlist is constructed correctly 2457 */ 2458 if ((error = zfs_deleg_verify_nvlist(fsaclnv)) != 0) { 2459 nvlist_free(fsaclnv); 2460 return (EINVAL); 2461 } 2462 2463 /* 2464 * If we don't have PRIV_SYS_MOUNT, then validate 2465 * that user is allowed to hand out each permission in 2466 * the nvlist(s) 2467 */ 2468 2469 error = secpolicy_zfs(CRED()); 2470 if (error) { 2471 if (zc->zc_perm_action == B_FALSE) { 2472 error = dsl_deleg_can_allow(zc->zc_name, 2473 fsaclnv, CRED()); 2474 } else { 2475 error = dsl_deleg_can_unallow(zc->zc_name, 2476 fsaclnv, CRED()); 2477 } 2478 } 2479 2480 if (error == 0) 2481 error = dsl_deleg_set(zc->zc_name, fsaclnv, zc->zc_perm_action); 2482 2483 nvlist_free(fsaclnv); 2484 return (error); 2485 } 2486 2487 /* 2488 * inputs: 2489 * zc_name name of filesystem 2490 * 2491 * outputs: 2492 * zc_nvlist_src{_size} nvlist of delegated permissions 2493 */ 2494 static int 2495 zfs_ioc_get_fsacl(zfs_cmd_t *zc) 2496 { 2497 nvlist_t *nvp; 2498 int error; 2499 2500 if ((error = dsl_deleg_get(zc->zc_name, &nvp)) == 0) { 2501 error = put_nvlist(zc, nvp); 2502 nvlist_free(nvp); 2503 } 2504 2505 return (error); 2506 } 2507 2508 /* 2509 * Search the vfs list for a specified resource. Returns a pointer to it 2510 * or NULL if no suitable entry is found. The caller of this routine 2511 * is responsible for releasing the returned vfs pointer. 2512 */ 2513 static vfs_t * 2514 zfs_get_vfs(const char *resource) 2515 { 2516 struct vfs *vfsp; 2517 struct vfs *vfs_found = NULL; 2518 2519 vfs_list_read_lock(); 2520 vfsp = rootvfs; 2521 do { 2522 if (strcmp(refstr_value(vfsp->vfs_resource), resource) == 0) { 2523 VFS_HOLD(vfsp); 2524 vfs_found = vfsp; 2525 break; 2526 } 2527 vfsp = vfsp->vfs_next; 2528 } while (vfsp != rootvfs); 2529 vfs_list_unlock(); 2530 return (vfs_found); 2531 } 2532 2533 /* ARGSUSED */ 2534 static void 2535 zfs_create_cb(objset_t *os, void *arg, cred_t *cr, dmu_tx_t *tx) 2536 { 2537 zfs_creat_t *zct = arg; 2538 2539 zfs_create_fs(os, cr, zct->zct_zplprops, tx); 2540 } 2541 2542 #define ZFS_PROP_UNDEFINED ((uint64_t)-1) 2543 2544 /* 2545 * inputs: 2546 * createprops list of properties requested by creator 2547 * default_zplver zpl version to use if unspecified in createprops 2548 * fuids_ok fuids allowed in this version of the spa? 2549 * os parent objset pointer (NULL if root fs) 2550 * 2551 * outputs: 2552 * zplprops values for the zplprops we attach to the master node object 2553 * is_ci true if requested file system will be purely case-insensitive 2554 * 2555 * Determine the settings for utf8only, normalization and 2556 * casesensitivity. Specific values may have been requested by the 2557 * creator and/or we can inherit values from the parent dataset. If 2558 * the file system is of too early a vintage, a creator can not 2559 * request settings for these properties, even if the requested 2560 * setting is the default value. We don't actually want to create dsl 2561 * properties for these, so remove them from the source nvlist after 2562 * processing. 2563 */ 2564 static int 2565 zfs_fill_zplprops_impl(objset_t *os, uint64_t zplver, 2566 boolean_t fuids_ok, boolean_t sa_ok, nvlist_t *createprops, 2567 nvlist_t *zplprops, boolean_t *is_ci) 2568 { 2569 uint64_t sense = ZFS_PROP_UNDEFINED; 2570 uint64_t norm = ZFS_PROP_UNDEFINED; 2571 uint64_t u8 = ZFS_PROP_UNDEFINED; 2572 2573 ASSERT(zplprops != NULL); 2574 2575 /* 2576 * Pull out creator prop choices, if any. 2577 */ 2578 if (createprops) { 2579 (void) nvlist_lookup_uint64(createprops, 2580 zfs_prop_to_name(ZFS_PROP_VERSION), &zplver); 2581 (void) nvlist_lookup_uint64(createprops, 2582 zfs_prop_to_name(ZFS_PROP_NORMALIZE), &norm); 2583 (void) nvlist_remove_all(createprops, 2584 zfs_prop_to_name(ZFS_PROP_NORMALIZE)); 2585 (void) nvlist_lookup_uint64(createprops, 2586 zfs_prop_to_name(ZFS_PROP_UTF8ONLY), &u8); 2587 (void) nvlist_remove_all(createprops, 2588 zfs_prop_to_name(ZFS_PROP_UTF8ONLY)); 2589 (void) nvlist_lookup_uint64(createprops, 2590 zfs_prop_to_name(ZFS_PROP_CASE), &sense); 2591 (void) nvlist_remove_all(createprops, 2592 zfs_prop_to_name(ZFS_PROP_CASE)); 2593 } 2594 2595 /* 2596 * If the zpl version requested is whacky or the file system 2597 * or pool is version is too "young" to support normalization 2598 * and the creator tried to set a value for one of the props, 2599 * error out. 2600 */ 2601 if ((zplver < ZPL_VERSION_INITIAL || zplver > ZPL_VERSION) || 2602 (zplver >= ZPL_VERSION_FUID && !fuids_ok) || 2603 (zplver >= ZPL_VERSION_SA && !sa_ok) || 2604 (zplver < ZPL_VERSION_NORMALIZATION && 2605 (norm != ZFS_PROP_UNDEFINED || u8 != ZFS_PROP_UNDEFINED || 2606 sense != ZFS_PROP_UNDEFINED))) 2607 return (ENOTSUP); 2608 2609 /* 2610 * Put the version in the zplprops 2611 */ 2612 VERIFY(nvlist_add_uint64(zplprops, 2613 zfs_prop_to_name(ZFS_PROP_VERSION), zplver) == 0); 2614 2615 if (norm == ZFS_PROP_UNDEFINED) 2616 VERIFY(zfs_get_zplprop(os, ZFS_PROP_NORMALIZE, &norm) == 0); 2617 VERIFY(nvlist_add_uint64(zplprops, 2618 zfs_prop_to_name(ZFS_PROP_NORMALIZE), norm) == 0); 2619 2620 /* 2621 * If we're normalizing, names must always be valid UTF-8 strings. 2622 */ 2623 if (norm) 2624 u8 = 1; 2625 if (u8 == ZFS_PROP_UNDEFINED) 2626 VERIFY(zfs_get_zplprop(os, ZFS_PROP_UTF8ONLY, &u8) == 0); 2627 VERIFY(nvlist_add_uint64(zplprops, 2628 zfs_prop_to_name(ZFS_PROP_UTF8ONLY), u8) == 0); 2629 2630 if (sense == ZFS_PROP_UNDEFINED) 2631 VERIFY(zfs_get_zplprop(os, ZFS_PROP_CASE, &sense) == 0); 2632 VERIFY(nvlist_add_uint64(zplprops, 2633 zfs_prop_to_name(ZFS_PROP_CASE), sense) == 0); 2634 2635 if (is_ci) 2636 *is_ci = (sense == ZFS_CASE_INSENSITIVE); 2637 2638 return (0); 2639 } 2640 2641 static int 2642 zfs_fill_zplprops(const char *dataset, nvlist_t *createprops, 2643 nvlist_t *zplprops, boolean_t *is_ci) 2644 { 2645 boolean_t fuids_ok, sa_ok; 2646 uint64_t zplver = ZPL_VERSION; 2647 objset_t *os = NULL; 2648 char parentname[MAXNAMELEN]; 2649 char *cp; 2650 spa_t *spa; 2651 uint64_t spa_vers; 2652 int error; 2653 2654 (void) strlcpy(parentname, dataset, sizeof (parentname)); 2655 cp = strrchr(parentname, '/'); 2656 ASSERT(cp != NULL); 2657 cp[0] = '\0'; 2658 2659 if ((error = spa_open(dataset, &spa, FTAG)) != 0) 2660 return (error); 2661 2662 spa_vers = spa_version(spa); 2663 spa_close(spa, FTAG); 2664 2665 zplver = zfs_zpl_version_map(spa_vers); 2666 fuids_ok = (zplver >= ZPL_VERSION_FUID); 2667 sa_ok = (zplver >= ZPL_VERSION_SA); 2668 2669 /* 2670 * Open parent object set so we can inherit zplprop values. 2671 */ 2672 if ((error = dmu_objset_hold(parentname, FTAG, &os)) != 0) 2673 return (error); 2674 2675 error = zfs_fill_zplprops_impl(os, zplver, fuids_ok, sa_ok, createprops, 2676 zplprops, is_ci); 2677 dmu_objset_rele(os, FTAG); 2678 return (error); 2679 } 2680 2681 static int 2682 zfs_fill_zplprops_root(uint64_t spa_vers, nvlist_t *createprops, 2683 nvlist_t *zplprops, boolean_t *is_ci) 2684 { 2685 boolean_t fuids_ok; 2686 boolean_t sa_ok; 2687 uint64_t zplver = ZPL_VERSION; 2688 int error; 2689 2690 zplver = zfs_zpl_version_map(spa_vers); 2691 fuids_ok = (zplver >= ZPL_VERSION_FUID); 2692 sa_ok = (zplver >= ZPL_VERSION_SA); 2693 2694 error = zfs_fill_zplprops_impl(NULL, zplver, fuids_ok, sa_ok, 2695 createprops, zplprops, is_ci); 2696 return (error); 2697 } 2698 2699 /* 2700 * inputs: 2701 * zc_objset_type type of objset to create (fs vs zvol) 2702 * zc_name name of new objset 2703 * zc_value name of snapshot to clone from (may be empty) 2704 * zc_nvlist_src{_size} nvlist of properties to apply 2705 * 2706 * outputs: none 2707 */ 2708 static int 2709 zfs_ioc_create(zfs_cmd_t *zc) 2710 { 2711 objset_t *clone; 2712 int error = 0; 2713 zfs_creat_t zct; 2714 nvlist_t *nvprops = NULL; 2715 void (*cbfunc)(objset_t *os, void *arg, cred_t *cr, dmu_tx_t *tx); 2716 dmu_objset_type_t type = zc->zc_objset_type; 2717 2718 switch (type) { 2719 2720 case DMU_OST_ZFS: 2721 cbfunc = zfs_create_cb; 2722 break; 2723 2724 case DMU_OST_ZVOL: 2725 cbfunc = zvol_create_cb; 2726 break; 2727 2728 default: 2729 cbfunc = NULL; 2730 break; 2731 } 2732 if (strchr(zc->zc_name, '@') || 2733 strchr(zc->zc_name, '%')) 2734 return (EINVAL); 2735 2736 if (zc->zc_nvlist_src != NULL && 2737 (error = get_nvlist(zc->zc_nvlist_src, zc->zc_nvlist_src_size, 2738 zc->zc_iflags, &nvprops)) != 0) 2739 return (error); 2740 2741 zct.zct_zplprops = NULL; 2742 zct.zct_props = nvprops; 2743 2744 if (zc->zc_value[0] != '\0') { 2745 /* 2746 * We're creating a clone of an existing snapshot. 2747 */ 2748 zc->zc_value[sizeof (zc->zc_value) - 1] = '\0'; 2749 if (dataset_namecheck(zc->zc_value, NULL, NULL) != 0) { 2750 nvlist_free(nvprops); 2751 return (EINVAL); 2752 } 2753 2754 error = dmu_objset_hold(zc->zc_value, FTAG, &clone); 2755 if (error) { 2756 nvlist_free(nvprops); 2757 return (error); 2758 } 2759 2760 error = dmu_objset_clone(zc->zc_name, dmu_objset_ds(clone), 0); 2761 dmu_objset_rele(clone, FTAG); 2762 if (error) { 2763 nvlist_free(nvprops); 2764 return (error); 2765 } 2766 } else { 2767 boolean_t is_insensitive = B_FALSE; 2768 2769 if (cbfunc == NULL) { 2770 nvlist_free(nvprops); 2771 return (EINVAL); 2772 } 2773 2774 if (type == DMU_OST_ZVOL) { 2775 uint64_t volsize, volblocksize; 2776 2777 if (nvprops == NULL || 2778 nvlist_lookup_uint64(nvprops, 2779 zfs_prop_to_name(ZFS_PROP_VOLSIZE), 2780 &volsize) != 0) { 2781 nvlist_free(nvprops); 2782 return (EINVAL); 2783 } 2784 2785 if ((error = nvlist_lookup_uint64(nvprops, 2786 zfs_prop_to_name(ZFS_PROP_VOLBLOCKSIZE), 2787 &volblocksize)) != 0 && error != ENOENT) { 2788 nvlist_free(nvprops); 2789 return (EINVAL); 2790 } 2791 2792 if (error != 0) 2793 volblocksize = zfs_prop_default_numeric( 2794 ZFS_PROP_VOLBLOCKSIZE); 2795 2796 if ((error = zvol_check_volblocksize( 2797 volblocksize)) != 0 || 2798 (error = zvol_check_volsize(volsize, 2799 volblocksize)) != 0) { 2800 nvlist_free(nvprops); 2801 return (error); 2802 } 2803 } else if (type == DMU_OST_ZFS) { 2804 int error; 2805 2806 /* 2807 * We have to have normalization and 2808 * case-folding flags correct when we do the 2809 * file system creation, so go figure them out 2810 * now. 2811 */ 2812 VERIFY(nvlist_alloc(&zct.zct_zplprops, 2813 NV_UNIQUE_NAME, KM_SLEEP) == 0); 2814 error = zfs_fill_zplprops(zc->zc_name, nvprops, 2815 zct.zct_zplprops, &is_insensitive); 2816 if (error != 0) { 2817 nvlist_free(nvprops); 2818 nvlist_free(zct.zct_zplprops); 2819 return (error); 2820 } 2821 } 2822 error = dmu_objset_create(zc->zc_name, type, 2823 is_insensitive ? DS_FLAG_CI_DATASET : 0, cbfunc, &zct); 2824 nvlist_free(zct.zct_zplprops); 2825 } 2826 2827 /* 2828 * It would be nice to do this atomically. 2829 */ 2830 if (error == 0) { 2831 error = zfs_set_prop_nvlist(zc->zc_name, ZPROP_SRC_LOCAL, 2832 nvprops, NULL); 2833 if (error != 0) 2834 (void) dmu_objset_destroy(zc->zc_name, B_FALSE); 2835 } 2836 nvlist_free(nvprops); 2837 return (error); 2838 } 2839 2840 /* 2841 * inputs: 2842 * zc_name name of filesystem 2843 * zc_value short name of snapshot 2844 * zc_cookie recursive flag 2845 * zc_nvlist_src[_size] property list 2846 * 2847 * outputs: 2848 * zc_value short snapname (i.e. part after the '@') 2849 */ 2850 static int 2851 zfs_ioc_snapshot(zfs_cmd_t *zc) 2852 { 2853 nvlist_t *nvprops = NULL; 2854 int error; 2855 boolean_t recursive = zc->zc_cookie; 2856 2857 if (snapshot_namecheck(zc->zc_value, NULL, NULL) != 0) 2858 return (EINVAL); 2859 2860 if (zc->zc_nvlist_src != NULL && 2861 (error = get_nvlist(zc->zc_nvlist_src, zc->zc_nvlist_src_size, 2862 zc->zc_iflags, &nvprops)) != 0) 2863 return (error); 2864 2865 error = zfs_check_userprops(zc->zc_name, nvprops); 2866 if (error) 2867 goto out; 2868 2869 if (!nvlist_empty(nvprops) && 2870 zfs_earlier_version(zc->zc_name, SPA_VERSION_SNAP_PROPS)) { 2871 error = ENOTSUP; 2872 goto out; 2873 } 2874 2875 error = dmu_objset_snapshot(zc->zc_name, zc->zc_value, 2876 nvprops, recursive); 2877 2878 out: 2879 nvlist_free(nvprops); 2880 return (error); 2881 } 2882 2883 int 2884 zfs_unmount_snap(const char *name, void *arg) 2885 { 2886 vfs_t *vfsp = NULL; 2887 2888 if (arg) { 2889 char *snapname = arg; 2890 char *fullname = kmem_asprintf("%s@%s", name, snapname); 2891 vfsp = zfs_get_vfs(fullname); 2892 strfree(fullname); 2893 } else if (strchr(name, '@')) { 2894 vfsp = zfs_get_vfs(name); 2895 } 2896 2897 if (vfsp) { 2898 /* 2899 * Always force the unmount for snapshots. 2900 */ 2901 int flag = MS_FORCE; 2902 int err; 2903 2904 if ((err = vn_vfswlock(vfsp->vfs_vnodecovered)) != 0) { 2905 VFS_RELE(vfsp); 2906 return (err); 2907 } 2908 VFS_RELE(vfsp); 2909 if ((err = dounmount(vfsp, flag, kcred)) != 0) 2910 return (err); 2911 } 2912 return (0); 2913 } 2914 2915 /* 2916 * inputs: 2917 * zc_name name of filesystem 2918 * zc_value short name of snapshot 2919 * zc_defer_destroy mark for deferred destroy 2920 * 2921 * outputs: none 2922 */ 2923 static int 2924 zfs_ioc_destroy_snaps(zfs_cmd_t *zc) 2925 { 2926 int err; 2927 2928 if (snapshot_namecheck(zc->zc_value, NULL, NULL) != 0) 2929 return (EINVAL); 2930 err = dmu_objset_find(zc->zc_name, 2931 zfs_unmount_snap, zc->zc_value, DS_FIND_CHILDREN); 2932 if (err) 2933 return (err); 2934 return (dmu_snapshots_destroy(zc->zc_name, zc->zc_value, 2935 zc->zc_defer_destroy)); 2936 } 2937 2938 /* 2939 * inputs: 2940 * zc_name name of dataset to destroy 2941 * zc_objset_type type of objset 2942 * zc_defer_destroy mark for deferred destroy 2943 * 2944 * outputs: none 2945 */ 2946 static int 2947 zfs_ioc_destroy(zfs_cmd_t *zc) 2948 { 2949 int err; 2950 if (strchr(zc->zc_name, '@') && zc->zc_objset_type == DMU_OST_ZFS) { 2951 err = zfs_unmount_snap(zc->zc_name, NULL); 2952 if (err) 2953 return (err); 2954 } 2955 2956 err = dmu_objset_destroy(zc->zc_name, zc->zc_defer_destroy); 2957 if (zc->zc_objset_type == DMU_OST_ZVOL && err == 0) 2958 (void) zvol_remove_minor(zc->zc_name); 2959 return (err); 2960 } 2961 2962 /* 2963 * inputs: 2964 * zc_name name of dataset to rollback (to most recent snapshot) 2965 * 2966 * outputs: none 2967 */ 2968 static int 2969 zfs_ioc_rollback(zfs_cmd_t *zc) 2970 { 2971 dsl_dataset_t *ds, *clone; 2972 int error; 2973 zfsvfs_t *zfsvfs; 2974 char *clone_name; 2975 2976 error = dsl_dataset_hold(zc->zc_name, FTAG, &ds); 2977 if (error) 2978 return (error); 2979 2980 /* must not be a snapshot */ 2981 if (dsl_dataset_is_snapshot(ds)) { 2982 dsl_dataset_rele(ds, FTAG); 2983 return (EINVAL); 2984 } 2985 2986 /* must have a most recent snapshot */ 2987 if (ds->ds_phys->ds_prev_snap_txg < TXG_INITIAL) { 2988 dsl_dataset_rele(ds, FTAG); 2989 return (EINVAL); 2990 } 2991 2992 /* 2993 * Create clone of most recent snapshot. 2994 */ 2995 clone_name = kmem_asprintf("%s/%%rollback", zc->zc_name); 2996 error = dmu_objset_clone(clone_name, ds->ds_prev, DS_FLAG_INCONSISTENT); 2997 if (error) 2998 goto out; 2999 3000 error = dsl_dataset_own(clone_name, B_TRUE, FTAG, &clone); 3001 if (error) 3002 goto out; 3003 3004 /* 3005 * Do clone swap. 3006 */ 3007 if (getzfsvfs(zc->zc_name, &zfsvfs) == 0) { 3008 error = zfs_suspend_fs(zfsvfs); 3009 if (error == 0) { 3010 int resume_err; 3011 3012 if (dsl_dataset_tryown(ds, B_FALSE, FTAG)) { 3013 error = dsl_dataset_clone_swap(clone, ds, 3014 B_TRUE); 3015 dsl_dataset_disown(ds, FTAG); 3016 ds = NULL; 3017 } else { 3018 error = EBUSY; 3019 } 3020 resume_err = zfs_resume_fs(zfsvfs, zc->zc_name); 3021 error = error ? error : resume_err; 3022 } 3023 VFS_RELE(zfsvfs->z_vfs); 3024 } else { 3025 if (dsl_dataset_tryown(ds, B_FALSE, FTAG)) { 3026 error = dsl_dataset_clone_swap(clone, ds, B_TRUE); 3027 dsl_dataset_disown(ds, FTAG); 3028 ds = NULL; 3029 } else { 3030 error = EBUSY; 3031 } 3032 } 3033 3034 /* 3035 * Destroy clone (which also closes it). 3036 */ 3037 (void) dsl_dataset_destroy(clone, FTAG, B_FALSE); 3038 3039 out: 3040 strfree(clone_name); 3041 if (ds) 3042 dsl_dataset_rele(ds, FTAG); 3043 return (error); 3044 } 3045 3046 /* 3047 * inputs: 3048 * zc_name old name of dataset 3049 * zc_value new name of dataset 3050 * zc_cookie recursive flag (only valid for snapshots) 3051 * 3052 * outputs: none 3053 */ 3054 static int 3055 zfs_ioc_rename(zfs_cmd_t *zc) 3056 { 3057 boolean_t recursive = zc->zc_cookie & 1; 3058 3059 zc->zc_value[sizeof (zc->zc_value) - 1] = '\0'; 3060 if (dataset_namecheck(zc->zc_value, NULL, NULL) != 0 || 3061 strchr(zc->zc_value, '%')) 3062 return (EINVAL); 3063 3064 /* 3065 * Unmount snapshot unless we're doing a recursive rename, 3066 * in which case the dataset code figures out which snapshots 3067 * to unmount. 3068 */ 3069 if (!recursive && strchr(zc->zc_name, '@') != NULL && 3070 zc->zc_objset_type == DMU_OST_ZFS) { 3071 int err = zfs_unmount_snap(zc->zc_name, NULL); 3072 if (err) 3073 return (err); 3074 } 3075 if (zc->zc_objset_type == DMU_OST_ZVOL) 3076 (void) zvol_remove_minor(zc->zc_name); 3077 return (dmu_objset_rename(zc->zc_name, zc->zc_value, recursive)); 3078 } 3079 3080 static int 3081 zfs_check_settable(const char *dsname, nvpair_t *pair, cred_t *cr) 3082 { 3083 const char *propname = nvpair_name(pair); 3084 boolean_t issnap = (strchr(dsname, '@') != NULL); 3085 zfs_prop_t prop = zfs_name_to_prop(propname); 3086 uint64_t intval; 3087 int err; 3088 3089 if (prop == ZPROP_INVAL) { 3090 if (zfs_prop_user(propname)) { 3091 if (err = zfs_secpolicy_write_perms(dsname, 3092 ZFS_DELEG_PERM_USERPROP, cr)) 3093 return (err); 3094 return (0); 3095 } 3096 3097 if (!issnap && zfs_prop_userquota(propname)) { 3098 const char *perm = NULL; 3099 const char *uq_prefix = 3100 zfs_userquota_prop_prefixes[ZFS_PROP_USERQUOTA]; 3101 const char *gq_prefix = 3102 zfs_userquota_prop_prefixes[ZFS_PROP_GROUPQUOTA]; 3103 3104 if (strncmp(propname, uq_prefix, 3105 strlen(uq_prefix)) == 0) { 3106 perm = ZFS_DELEG_PERM_USERQUOTA; 3107 } else if (strncmp(propname, gq_prefix, 3108 strlen(gq_prefix)) == 0) { 3109 perm = ZFS_DELEG_PERM_GROUPQUOTA; 3110 } else { 3111 /* USERUSED and GROUPUSED are read-only */ 3112 return (EINVAL); 3113 } 3114 3115 if (err = zfs_secpolicy_write_perms(dsname, perm, cr)) 3116 return (err); 3117 return (0); 3118 } 3119 3120 return (EINVAL); 3121 } 3122 3123 if (issnap) 3124 return (EINVAL); 3125 3126 if (nvpair_type(pair) == DATA_TYPE_NVLIST) { 3127 /* 3128 * dsl_prop_get_all_impl() returns properties in this 3129 * format. 3130 */ 3131 nvlist_t *attrs; 3132 VERIFY(nvpair_value_nvlist(pair, &attrs) == 0); 3133 VERIFY(nvlist_lookup_nvpair(attrs, ZPROP_VALUE, 3134 &pair) == 0); 3135 } 3136 3137 /* 3138 * Check that this value is valid for this pool version 3139 */ 3140 switch (prop) { 3141 case ZFS_PROP_COMPRESSION: 3142 /* 3143 * If the user specified gzip compression, make sure 3144 * the SPA supports it. We ignore any errors here since 3145 * we'll catch them later. 3146 */ 3147 if (nvpair_type(pair) == DATA_TYPE_UINT64 && 3148 nvpair_value_uint64(pair, &intval) == 0) { 3149 if (intval >= ZIO_COMPRESS_GZIP_1 && 3150 intval <= ZIO_COMPRESS_GZIP_9 && 3151 zfs_earlier_version(dsname, 3152 SPA_VERSION_GZIP_COMPRESSION)) { 3153 return (ENOTSUP); 3154 } 3155 3156 if (intval == ZIO_COMPRESS_ZLE && 3157 zfs_earlier_version(dsname, 3158 SPA_VERSION_ZLE_COMPRESSION)) 3159 return (ENOTSUP); 3160 3161 /* 3162 * If this is a bootable dataset then 3163 * verify that the compression algorithm 3164 * is supported for booting. We must return 3165 * something other than ENOTSUP since it 3166 * implies a downrev pool version. 3167 */ 3168 if (zfs_is_bootfs(dsname) && 3169 !BOOTFS_COMPRESS_VALID(intval)) { 3170 return (ERANGE); 3171 } 3172 } 3173 break; 3174 3175 case ZFS_PROP_COPIES: 3176 if (zfs_earlier_version(dsname, SPA_VERSION_DITTO_BLOCKS)) 3177 return (ENOTSUP); 3178 break; 3179 3180 case ZFS_PROP_DEDUP: 3181 if (zfs_earlier_version(dsname, SPA_VERSION_DEDUP)) 3182 return (ENOTSUP); 3183 break; 3184 3185 case ZFS_PROP_SHARESMB: 3186 if (zpl_earlier_version(dsname, ZPL_VERSION_FUID)) 3187 return (ENOTSUP); 3188 break; 3189 3190 case ZFS_PROP_ACLINHERIT: 3191 if (nvpair_type(pair) == DATA_TYPE_UINT64 && 3192 nvpair_value_uint64(pair, &intval) == 0) { 3193 if (intval == ZFS_ACL_PASSTHROUGH_X && 3194 zfs_earlier_version(dsname, 3195 SPA_VERSION_PASSTHROUGH_X)) 3196 return (ENOTSUP); 3197 } 3198 break; 3199 } 3200 3201 return (zfs_secpolicy_setprop(dsname, prop, pair, CRED())); 3202 } 3203 3204 /* 3205 * Removes properties from the given props list that fail permission checks 3206 * needed to clear them and to restore them in case of a receive error. For each 3207 * property, make sure we have both set and inherit permissions. 3208 * 3209 * Returns the first error encountered if any permission checks fail. If the 3210 * caller provides a non-NULL errlist, it also gives the complete list of names 3211 * of all the properties that failed a permission check along with the 3212 * corresponding error numbers. The caller is responsible for freeing the 3213 * returned errlist. 3214 * 3215 * If every property checks out successfully, zero is returned and the list 3216 * pointed at by errlist is NULL. 3217 */ 3218 static int 3219 zfs_check_clearable(char *dataset, nvlist_t *props, nvlist_t **errlist) 3220 { 3221 zfs_cmd_t *zc; 3222 nvpair_t *pair, *next_pair; 3223 nvlist_t *errors; 3224 int err, rv = 0; 3225 3226 if (props == NULL) 3227 return (0); 3228 3229 VERIFY(nvlist_alloc(&errors, NV_UNIQUE_NAME, KM_SLEEP) == 0); 3230 3231 zc = kmem_alloc(sizeof (zfs_cmd_t), KM_SLEEP); 3232 (void) strcpy(zc->zc_name, dataset); 3233 pair = nvlist_next_nvpair(props, NULL); 3234 while (pair != NULL) { 3235 next_pair = nvlist_next_nvpair(props, pair); 3236 3237 (void) strcpy(zc->zc_value, nvpair_name(pair)); 3238 if ((err = zfs_check_settable(dataset, pair, CRED())) != 0 || 3239 (err = zfs_secpolicy_inherit(zc, CRED())) != 0) { 3240 VERIFY(nvlist_remove_nvpair(props, pair) == 0); 3241 VERIFY(nvlist_add_int32(errors, 3242 zc->zc_value, err) == 0); 3243 } 3244 pair = next_pair; 3245 } 3246 kmem_free(zc, sizeof (zfs_cmd_t)); 3247 3248 if ((pair = nvlist_next_nvpair(errors, NULL)) == NULL) { 3249 nvlist_free(errors); 3250 errors = NULL; 3251 } else { 3252 VERIFY(nvpair_value_int32(pair, &rv) == 0); 3253 } 3254 3255 if (errlist == NULL) 3256 nvlist_free(errors); 3257 else 3258 *errlist = errors; 3259 3260 return (rv); 3261 } 3262 3263 static boolean_t 3264 propval_equals(nvpair_t *p1, nvpair_t *p2) 3265 { 3266 if (nvpair_type(p1) == DATA_TYPE_NVLIST) { 3267 /* dsl_prop_get_all_impl() format */ 3268 nvlist_t *attrs; 3269 VERIFY(nvpair_value_nvlist(p1, &attrs) == 0); 3270 VERIFY(nvlist_lookup_nvpair(attrs, ZPROP_VALUE, 3271 &p1) == 0); 3272 } 3273 3274 if (nvpair_type(p2) == DATA_TYPE_NVLIST) { 3275 nvlist_t *attrs; 3276 VERIFY(nvpair_value_nvlist(p2, &attrs) == 0); 3277 VERIFY(nvlist_lookup_nvpair(attrs, ZPROP_VALUE, 3278 &p2) == 0); 3279 } 3280 3281 if (nvpair_type(p1) != nvpair_type(p2)) 3282 return (B_FALSE); 3283 3284 if (nvpair_type(p1) == DATA_TYPE_STRING) { 3285 char *valstr1, *valstr2; 3286 3287 VERIFY(nvpair_value_string(p1, (char **)&valstr1) == 0); 3288 VERIFY(nvpair_value_string(p2, (char **)&valstr2) == 0); 3289 return (strcmp(valstr1, valstr2) == 0); 3290 } else { 3291 uint64_t intval1, intval2; 3292 3293 VERIFY(nvpair_value_uint64(p1, &intval1) == 0); 3294 VERIFY(nvpair_value_uint64(p2, &intval2) == 0); 3295 return (intval1 == intval2); 3296 } 3297 } 3298 3299 /* 3300 * Remove properties from props if they are not going to change (as determined 3301 * by comparison with origprops). Remove them from origprops as well, since we 3302 * do not need to clear or restore properties that won't change. 3303 */ 3304 static void 3305 props_reduce(nvlist_t *props, nvlist_t *origprops) 3306 { 3307 nvpair_t *pair, *next_pair; 3308 3309 if (origprops == NULL) 3310 return; /* all props need to be received */ 3311 3312 pair = nvlist_next_nvpair(props, NULL); 3313 while (pair != NULL) { 3314 const char *propname = nvpair_name(pair); 3315 nvpair_t *match; 3316 3317 next_pair = nvlist_next_nvpair(props, pair); 3318 3319 if ((nvlist_lookup_nvpair(origprops, propname, 3320 &match) != 0) || !propval_equals(pair, match)) 3321 goto next; /* need to set received value */ 3322 3323 /* don't clear the existing received value */ 3324 (void) nvlist_remove_nvpair(origprops, match); 3325 /* don't bother receiving the property */ 3326 (void) nvlist_remove_nvpair(props, pair); 3327 next: 3328 pair = next_pair; 3329 } 3330 } 3331 3332 #ifdef DEBUG 3333 static boolean_t zfs_ioc_recv_inject_err; 3334 #endif 3335 3336 /* 3337 * inputs: 3338 * zc_name name of containing filesystem 3339 * zc_nvlist_src{_size} nvlist of properties to apply 3340 * zc_value name of snapshot to create 3341 * zc_string name of clone origin (if DRR_FLAG_CLONE) 3342 * zc_cookie file descriptor to recv from 3343 * zc_begin_record the BEGIN record of the stream (not byteswapped) 3344 * zc_guid force flag 3345 * 3346 * outputs: 3347 * zc_cookie number of bytes read 3348 * zc_nvlist_dst{_size} error for each unapplied received property 3349 * zc_obj zprop_errflags_t 3350 */ 3351 static int 3352 zfs_ioc_recv(zfs_cmd_t *zc) 3353 { 3354 file_t *fp; 3355 objset_t *os; 3356 dmu_recv_cookie_t drc; 3357 boolean_t force = (boolean_t)zc->zc_guid; 3358 int fd; 3359 int error = 0; 3360 int props_error = 0; 3361 nvlist_t *errors; 3362 offset_t off; 3363 nvlist_t *props = NULL; /* sent properties */ 3364 nvlist_t *origprops = NULL; /* existing properties */ 3365 objset_t *origin = NULL; 3366 char *tosnap; 3367 char tofs[ZFS_MAXNAMELEN]; 3368 boolean_t first_recvd_props = B_FALSE; 3369 3370 if (dataset_namecheck(zc->zc_value, NULL, NULL) != 0 || 3371 strchr(zc->zc_value, '@') == NULL || 3372 strchr(zc->zc_value, '%')) 3373 return (EINVAL); 3374 3375 (void) strcpy(tofs, zc->zc_value); 3376 tosnap = strchr(tofs, '@'); 3377 *tosnap++ = '\0'; 3378 3379 if (zc->zc_nvlist_src != NULL && 3380 (error = get_nvlist(zc->zc_nvlist_src, zc->zc_nvlist_src_size, 3381 zc->zc_iflags, &props)) != 0) 3382 return (error); 3383 3384 fd = zc->zc_cookie; 3385 fp = getf(fd); 3386 if (fp == NULL) { 3387 nvlist_free(props); 3388 return (EBADF); 3389 } 3390 3391 VERIFY(nvlist_alloc(&errors, NV_UNIQUE_NAME, KM_SLEEP) == 0); 3392 3393 if (props && dmu_objset_hold(tofs, FTAG, &os) == 0) { 3394 if ((spa_version(os->os_spa) >= SPA_VERSION_RECVD_PROPS) && 3395 !dsl_prop_get_hasrecvd(os)) { 3396 first_recvd_props = B_TRUE; 3397 } 3398 3399 /* 3400 * If new received properties are supplied, they are to 3401 * completely replace the existing received properties, so stash 3402 * away the existing ones. 3403 */ 3404 if (dsl_prop_get_received(os, &origprops) == 0) { 3405 nvlist_t *errlist = NULL; 3406 /* 3407 * Don't bother writing a property if its value won't 3408 * change (and avoid the unnecessary security checks). 3409 * 3410 * The first receive after SPA_VERSION_RECVD_PROPS is a 3411 * special case where we blow away all local properties 3412 * regardless. 3413 */ 3414 if (!first_recvd_props) 3415 props_reduce(props, origprops); 3416 if (zfs_check_clearable(tofs, origprops, 3417 &errlist) != 0) 3418 (void) nvlist_merge(errors, errlist, 0); 3419 nvlist_free(errlist); 3420 } 3421 3422 dmu_objset_rele(os, FTAG); 3423 } 3424 3425 if (zc->zc_string[0]) { 3426 error = dmu_objset_hold(zc->zc_string, FTAG, &origin); 3427 if (error) 3428 goto out; 3429 } 3430 3431 error = dmu_recv_begin(tofs, tosnap, zc->zc_top_ds, 3432 &zc->zc_begin_record, force, origin, &drc); 3433 if (origin) 3434 dmu_objset_rele(origin, FTAG); 3435 if (error) 3436 goto out; 3437 3438 /* 3439 * Set properties before we receive the stream so that they are applied 3440 * to the new data. Note that we must call dmu_recv_stream() if 3441 * dmu_recv_begin() succeeds. 3442 */ 3443 if (props) { 3444 nvlist_t *errlist; 3445 3446 if (dmu_objset_from_ds(drc.drc_logical_ds, &os) == 0) { 3447 if (drc.drc_newfs) { 3448 if (spa_version(os->os_spa) >= 3449 SPA_VERSION_RECVD_PROPS) 3450 first_recvd_props = B_TRUE; 3451 } else if (origprops != NULL) { 3452 if (clear_received_props(os, tofs, origprops, 3453 first_recvd_props ? NULL : props) != 0) 3454 zc->zc_obj |= ZPROP_ERR_NOCLEAR; 3455 } else { 3456 zc->zc_obj |= ZPROP_ERR_NOCLEAR; 3457 } 3458 dsl_prop_set_hasrecvd(os); 3459 } else if (!drc.drc_newfs) { 3460 zc->zc_obj |= ZPROP_ERR_NOCLEAR; 3461 } 3462 3463 (void) zfs_set_prop_nvlist(tofs, ZPROP_SRC_RECEIVED, 3464 props, &errlist); 3465 (void) nvlist_merge(errors, errlist, 0); 3466 nvlist_free(errlist); 3467 } 3468 3469 if (fit_error_list(zc, &errors) != 0 || put_nvlist(zc, errors) != 0) { 3470 /* 3471 * Caller made zc->zc_nvlist_dst less than the minimum expected 3472 * size or supplied an invalid address. 3473 */ 3474 props_error = EINVAL; 3475 } 3476 3477 off = fp->f_offset; 3478 error = dmu_recv_stream(&drc, fp->f_vnode, &off); 3479 3480 if (error == 0) { 3481 zfsvfs_t *zfsvfs = NULL; 3482 3483 if (getzfsvfs(tofs, &zfsvfs) == 0) { 3484 /* online recv */ 3485 int end_err; 3486 3487 error = zfs_suspend_fs(zfsvfs); 3488 /* 3489 * If the suspend fails, then the recv_end will 3490 * likely also fail, and clean up after itself. 3491 */ 3492 end_err = dmu_recv_end(&drc); 3493 if (error == 0) 3494 error = zfs_resume_fs(zfsvfs, tofs); 3495 error = error ? error : end_err; 3496 VFS_RELE(zfsvfs->z_vfs); 3497 } else { 3498 error = dmu_recv_end(&drc); 3499 } 3500 } 3501 3502 zc->zc_cookie = off - fp->f_offset; 3503 if (VOP_SEEK(fp->f_vnode, fp->f_offset, &off, NULL) == 0) 3504 fp->f_offset = off; 3505 3506 #ifdef DEBUG 3507 if (zfs_ioc_recv_inject_err) { 3508 zfs_ioc_recv_inject_err = B_FALSE; 3509 error = 1; 3510 } 3511 #endif 3512 /* 3513 * On error, restore the original props. 3514 */ 3515 if (error && props) { 3516 if (dmu_objset_hold(tofs, FTAG, &os) == 0) { 3517 if (clear_received_props(os, tofs, props, NULL) != 0) { 3518 /* 3519 * We failed to clear the received properties. 3520 * Since we may have left a $recvd value on the 3521 * system, we can't clear the $hasrecvd flag. 3522 */ 3523 zc->zc_obj |= ZPROP_ERR_NORESTORE; 3524 } else if (first_recvd_props) { 3525 dsl_prop_unset_hasrecvd(os); 3526 } 3527 dmu_objset_rele(os, FTAG); 3528 } else if (!drc.drc_newfs) { 3529 /* We failed to clear the received properties. */ 3530 zc->zc_obj |= ZPROP_ERR_NORESTORE; 3531 } 3532 3533 if (origprops == NULL && !drc.drc_newfs) { 3534 /* We failed to stash the original properties. */ 3535 zc->zc_obj |= ZPROP_ERR_NORESTORE; 3536 } 3537 3538 /* 3539 * dsl_props_set() will not convert RECEIVED to LOCAL on or 3540 * after SPA_VERSION_RECVD_PROPS, so we need to specify LOCAL 3541 * explictly if we're restoring local properties cleared in the 3542 * first new-style receive. 3543 */ 3544 if (origprops != NULL && 3545 zfs_set_prop_nvlist(tofs, (first_recvd_props ? 3546 ZPROP_SRC_LOCAL : ZPROP_SRC_RECEIVED), 3547 origprops, NULL) != 0) { 3548 /* 3549 * We stashed the original properties but failed to 3550 * restore them. 3551 */ 3552 zc->zc_obj |= ZPROP_ERR_NORESTORE; 3553 } 3554 } 3555 out: 3556 nvlist_free(props); 3557 nvlist_free(origprops); 3558 nvlist_free(errors); 3559 releasef(fd); 3560 3561 if (error == 0) 3562 error = props_error; 3563 3564 return (error); 3565 } 3566 3567 /* 3568 * inputs: 3569 * zc_name name of snapshot to send 3570 * zc_value short name of incremental fromsnap (may be empty) 3571 * zc_cookie file descriptor to send stream to 3572 * zc_obj fromorigin flag (mutually exclusive with zc_value) 3573 * 3574 * outputs: none 3575 */ 3576 static int 3577 zfs_ioc_send(zfs_cmd_t *zc) 3578 { 3579 objset_t *fromsnap = NULL; 3580 objset_t *tosnap; 3581 file_t *fp; 3582 int error; 3583 offset_t off; 3584 3585 error = dmu_objset_hold(zc->zc_name, FTAG, &tosnap); 3586 if (error) 3587 return (error); 3588 3589 if (zc->zc_value[0] != '\0') { 3590 char *buf; 3591 char *cp; 3592 3593 buf = kmem_alloc(MAXPATHLEN, KM_SLEEP); 3594 (void) strncpy(buf, zc->zc_name, MAXPATHLEN); 3595 cp = strchr(buf, '@'); 3596 if (cp) 3597 *(cp+1) = 0; 3598 (void) strncat(buf, zc->zc_value, MAXPATHLEN); 3599 error = dmu_objset_hold(buf, FTAG, &fromsnap); 3600 kmem_free(buf, MAXPATHLEN); 3601 if (error) { 3602 dmu_objset_rele(tosnap, FTAG); 3603 return (error); 3604 } 3605 } 3606 3607 fp = getf(zc->zc_cookie); 3608 if (fp == NULL) { 3609 dmu_objset_rele(tosnap, FTAG); 3610 if (fromsnap) 3611 dmu_objset_rele(fromsnap, FTAG); 3612 return (EBADF); 3613 } 3614 3615 off = fp->f_offset; 3616 error = dmu_sendbackup(tosnap, fromsnap, zc->zc_obj, fp->f_vnode, &off); 3617 3618 if (VOP_SEEK(fp->f_vnode, fp->f_offset, &off, NULL) == 0) 3619 fp->f_offset = off; 3620 releasef(zc->zc_cookie); 3621 if (fromsnap) 3622 dmu_objset_rele(fromsnap, FTAG); 3623 dmu_objset_rele(tosnap, FTAG); 3624 return (error); 3625 } 3626 3627 static int 3628 zfs_ioc_inject_fault(zfs_cmd_t *zc) 3629 { 3630 int id, error; 3631 3632 error = zio_inject_fault(zc->zc_name, (int)zc->zc_guid, &id, 3633 &zc->zc_inject_record); 3634 3635 if (error == 0) 3636 zc->zc_guid = (uint64_t)id; 3637 3638 return (error); 3639 } 3640 3641 static int 3642 zfs_ioc_clear_fault(zfs_cmd_t *zc) 3643 { 3644 return (zio_clear_fault((int)zc->zc_guid)); 3645 } 3646 3647 static int 3648 zfs_ioc_inject_list_next(zfs_cmd_t *zc) 3649 { 3650 int id = (int)zc->zc_guid; 3651 int error; 3652 3653 error = zio_inject_list_next(&id, zc->zc_name, sizeof (zc->zc_name), 3654 &zc->zc_inject_record); 3655 3656 zc->zc_guid = id; 3657 3658 return (error); 3659 } 3660 3661 static int 3662 zfs_ioc_error_log(zfs_cmd_t *zc) 3663 { 3664 spa_t *spa; 3665 int error; 3666 size_t count = (size_t)zc->zc_nvlist_dst_size; 3667 3668 if ((error = spa_open(zc->zc_name, &spa, FTAG)) != 0) 3669 return (error); 3670 3671 error = spa_get_errlog(spa, (void *)(uintptr_t)zc->zc_nvlist_dst, 3672 &count); 3673 if (error == 0) 3674 zc->zc_nvlist_dst_size = count; 3675 else 3676 zc->zc_nvlist_dst_size = spa_get_errlog_size(spa); 3677 3678 spa_close(spa, FTAG); 3679 3680 return (error); 3681 } 3682 3683 static int 3684 zfs_ioc_clear(zfs_cmd_t *zc) 3685 { 3686 spa_t *spa; 3687 vdev_t *vd; 3688 int error; 3689 3690 /* 3691 * On zpool clear we also fix up missing slogs 3692 */ 3693 mutex_enter(&spa_namespace_lock); 3694 spa = spa_lookup(zc->zc_name); 3695 if (spa == NULL) { 3696 mutex_exit(&spa_namespace_lock); 3697 return (EIO); 3698 } 3699 if (spa_get_log_state(spa) == SPA_LOG_MISSING) { 3700 /* we need to let spa_open/spa_load clear the chains */ 3701 spa_set_log_state(spa, SPA_LOG_CLEAR); 3702 } 3703 spa->spa_last_open_failed = 0; 3704 mutex_exit(&spa_namespace_lock); 3705 3706 if (zc->zc_cookie & ZPOOL_NO_REWIND) { 3707 error = spa_open(zc->zc_name, &spa, FTAG); 3708 } else { 3709 nvlist_t *policy; 3710 nvlist_t *config = NULL; 3711 3712 if (zc->zc_nvlist_src == NULL) 3713 return (EINVAL); 3714 3715 if ((error = get_nvlist(zc->zc_nvlist_src, 3716 zc->zc_nvlist_src_size, zc->zc_iflags, &policy)) == 0) { 3717 error = spa_open_rewind(zc->zc_name, &spa, FTAG, 3718 policy, &config); 3719 if (config != NULL) { 3720 (void) put_nvlist(zc, config); 3721 nvlist_free(config); 3722 } 3723 nvlist_free(policy); 3724 } 3725 } 3726 3727 if (error) 3728 return (error); 3729 3730 spa_vdev_state_enter(spa, SCL_NONE); 3731 3732 if (zc->zc_guid == 0) { 3733 vd = NULL; 3734 } else { 3735 vd = spa_lookup_by_guid(spa, zc->zc_guid, B_TRUE); 3736 if (vd == NULL) { 3737 (void) spa_vdev_state_exit(spa, NULL, ENODEV); 3738 spa_close(spa, FTAG); 3739 return (ENODEV); 3740 } 3741 } 3742 3743 vdev_clear(spa, vd); 3744 3745 (void) spa_vdev_state_exit(spa, NULL, 0); 3746 3747 /* 3748 * Resume any suspended I/Os. 3749 */ 3750 if (zio_resume(spa) != 0) 3751 error = EIO; 3752 3753 spa_close(spa, FTAG); 3754 3755 return (error); 3756 } 3757 3758 /* 3759 * inputs: 3760 * zc_name name of filesystem 3761 * zc_value name of origin snapshot 3762 * 3763 * outputs: 3764 * zc_string name of conflicting snapshot, if there is one 3765 */ 3766 static int 3767 zfs_ioc_promote(zfs_cmd_t *zc) 3768 { 3769 char *cp; 3770 3771 /* 3772 * We don't need to unmount *all* the origin fs's snapshots, but 3773 * it's easier. 3774 */ 3775 cp = strchr(zc->zc_value, '@'); 3776 if (cp) 3777 *cp = '\0'; 3778 (void) dmu_objset_find(zc->zc_value, 3779 zfs_unmount_snap, NULL, DS_FIND_SNAPSHOTS); 3780 return (dsl_dataset_promote(zc->zc_name, zc->zc_string)); 3781 } 3782 3783 /* 3784 * Retrieve a single {user|group}{used|quota}@... property. 3785 * 3786 * inputs: 3787 * zc_name name of filesystem 3788 * zc_objset_type zfs_userquota_prop_t 3789 * zc_value domain name (eg. "S-1-234-567-89") 3790 * zc_guid RID/UID/GID 3791 * 3792 * outputs: 3793 * zc_cookie property value 3794 */ 3795 static int 3796 zfs_ioc_userspace_one(zfs_cmd_t *zc) 3797 { 3798 zfsvfs_t *zfsvfs; 3799 int error; 3800 3801 if (zc->zc_objset_type >= ZFS_NUM_USERQUOTA_PROPS) 3802 return (EINVAL); 3803 3804 error = zfsvfs_hold(zc->zc_name, FTAG, &zfsvfs); 3805 if (error) 3806 return (error); 3807 3808 error = zfs_userspace_one(zfsvfs, 3809 zc->zc_objset_type, zc->zc_value, zc->zc_guid, &zc->zc_cookie); 3810 zfsvfs_rele(zfsvfs, FTAG); 3811 3812 return (error); 3813 } 3814 3815 /* 3816 * inputs: 3817 * zc_name name of filesystem 3818 * zc_cookie zap cursor 3819 * zc_objset_type zfs_userquota_prop_t 3820 * zc_nvlist_dst[_size] buffer to fill (not really an nvlist) 3821 * 3822 * outputs: 3823 * zc_nvlist_dst[_size] data buffer (array of zfs_useracct_t) 3824 * zc_cookie zap cursor 3825 */ 3826 static int 3827 zfs_ioc_userspace_many(zfs_cmd_t *zc) 3828 { 3829 zfsvfs_t *zfsvfs; 3830 int bufsize = zc->zc_nvlist_dst_size; 3831 3832 if (bufsize <= 0) 3833 return (ENOMEM); 3834 3835 int error = zfsvfs_hold(zc->zc_name, FTAG, &zfsvfs); 3836 if (error) 3837 return (error); 3838 3839 void *buf = kmem_alloc(bufsize, KM_SLEEP); 3840 3841 error = zfs_userspace_many(zfsvfs, zc->zc_objset_type, &zc->zc_cookie, 3842 buf, &zc->zc_nvlist_dst_size); 3843 3844 if (error == 0) { 3845 error = xcopyout(buf, 3846 (void *)(uintptr_t)zc->zc_nvlist_dst, 3847 zc->zc_nvlist_dst_size); 3848 } 3849 kmem_free(buf, bufsize); 3850 zfsvfs_rele(zfsvfs, FTAG); 3851 3852 return (error); 3853 } 3854 3855 /* 3856 * inputs: 3857 * zc_name name of filesystem 3858 * 3859 * outputs: 3860 * none 3861 */ 3862 static int 3863 zfs_ioc_userspace_upgrade(zfs_cmd_t *zc) 3864 { 3865 objset_t *os; 3866 int error = 0; 3867 zfsvfs_t *zfsvfs; 3868 3869 if (getzfsvfs(zc->zc_name, &zfsvfs) == 0) { 3870 if (!dmu_objset_userused_enabled(zfsvfs->z_os)) { 3871 /* 3872 * If userused is not enabled, it may be because the 3873 * objset needs to be closed & reopened (to grow the 3874 * objset_phys_t). Suspend/resume the fs will do that. 3875 */ 3876 error = zfs_suspend_fs(zfsvfs); 3877 if (error == 0) 3878 error = zfs_resume_fs(zfsvfs, zc->zc_name); 3879 } 3880 if (error == 0) 3881 error = dmu_objset_userspace_upgrade(zfsvfs->z_os); 3882 VFS_RELE(zfsvfs->z_vfs); 3883 } else { 3884 /* XXX kind of reading contents without owning */ 3885 error = dmu_objset_hold(zc->zc_name, FTAG, &os); 3886 if (error) 3887 return (error); 3888 3889 error = dmu_objset_userspace_upgrade(os); 3890 dmu_objset_rele(os, FTAG); 3891 } 3892 3893 return (error); 3894 } 3895 3896 /* 3897 * We don't want to have a hard dependency 3898 * against some special symbols in sharefs 3899 * nfs, and smbsrv. Determine them if needed when 3900 * the first file system is shared. 3901 * Neither sharefs, nfs or smbsrv are unloadable modules. 3902 */ 3903 int (*znfsexport_fs)(void *arg); 3904 int (*zshare_fs)(enum sharefs_sys_op, share_t *, uint32_t); 3905 int (*zsmbexport_fs)(void *arg, boolean_t add_share); 3906 3907 int zfs_nfsshare_inited; 3908 int zfs_smbshare_inited; 3909 3910 ddi_modhandle_t nfs_mod; 3911 ddi_modhandle_t sharefs_mod; 3912 ddi_modhandle_t smbsrv_mod; 3913 kmutex_t zfs_share_lock; 3914 3915 static int 3916 zfs_init_sharefs() 3917 { 3918 int error; 3919 3920 ASSERT(MUTEX_HELD(&zfs_share_lock)); 3921 /* Both NFS and SMB shares also require sharetab support. */ 3922 if (sharefs_mod == NULL && ((sharefs_mod = 3923 ddi_modopen("fs/sharefs", 3924 KRTLD_MODE_FIRST, &error)) == NULL)) { 3925 return (ENOSYS); 3926 } 3927 if (zshare_fs == NULL && ((zshare_fs = 3928 (int (*)(enum sharefs_sys_op, share_t *, uint32_t)) 3929 ddi_modsym(sharefs_mod, "sharefs_impl", &error)) == NULL)) { 3930 return (ENOSYS); 3931 } 3932 return (0); 3933 } 3934 3935 static int 3936 zfs_ioc_share(zfs_cmd_t *zc) 3937 { 3938 int error; 3939 int opcode; 3940 3941 switch (zc->zc_share.z_sharetype) { 3942 case ZFS_SHARE_NFS: 3943 case ZFS_UNSHARE_NFS: 3944 if (zfs_nfsshare_inited == 0) { 3945 mutex_enter(&zfs_share_lock); 3946 if (nfs_mod == NULL && ((nfs_mod = ddi_modopen("fs/nfs", 3947 KRTLD_MODE_FIRST, &error)) == NULL)) { 3948 mutex_exit(&zfs_share_lock); 3949 return (ENOSYS); 3950 } 3951 if (znfsexport_fs == NULL && 3952 ((znfsexport_fs = (int (*)(void *)) 3953 ddi_modsym(nfs_mod, 3954 "nfs_export", &error)) == NULL)) { 3955 mutex_exit(&zfs_share_lock); 3956 return (ENOSYS); 3957 } 3958 error = zfs_init_sharefs(); 3959 if (error) { 3960 mutex_exit(&zfs_share_lock); 3961 return (ENOSYS); 3962 } 3963 zfs_nfsshare_inited = 1; 3964 mutex_exit(&zfs_share_lock); 3965 } 3966 break; 3967 case ZFS_SHARE_SMB: 3968 case ZFS_UNSHARE_SMB: 3969 if (zfs_smbshare_inited == 0) { 3970 mutex_enter(&zfs_share_lock); 3971 if (smbsrv_mod == NULL && ((smbsrv_mod = 3972 ddi_modopen("drv/smbsrv", 3973 KRTLD_MODE_FIRST, &error)) == NULL)) { 3974 mutex_exit(&zfs_share_lock); 3975 return (ENOSYS); 3976 } 3977 if (zsmbexport_fs == NULL && ((zsmbexport_fs = 3978 (int (*)(void *, boolean_t))ddi_modsym(smbsrv_mod, 3979 "smb_server_share", &error)) == NULL)) { 3980 mutex_exit(&zfs_share_lock); 3981 return (ENOSYS); 3982 } 3983 error = zfs_init_sharefs(); 3984 if (error) { 3985 mutex_exit(&zfs_share_lock); 3986 return (ENOSYS); 3987 } 3988 zfs_smbshare_inited = 1; 3989 mutex_exit(&zfs_share_lock); 3990 } 3991 break; 3992 default: 3993 return (EINVAL); 3994 } 3995 3996 switch (zc->zc_share.z_sharetype) { 3997 case ZFS_SHARE_NFS: 3998 case ZFS_UNSHARE_NFS: 3999 if (error = 4000 znfsexport_fs((void *) 4001 (uintptr_t)zc->zc_share.z_exportdata)) 4002 return (error); 4003 break; 4004 case ZFS_SHARE_SMB: 4005 case ZFS_UNSHARE_SMB: 4006 if (error = zsmbexport_fs((void *) 4007 (uintptr_t)zc->zc_share.z_exportdata, 4008 zc->zc_share.z_sharetype == ZFS_SHARE_SMB ? 4009 B_TRUE: B_FALSE)) { 4010 return (error); 4011 } 4012 break; 4013 } 4014 4015 opcode = (zc->zc_share.z_sharetype == ZFS_SHARE_NFS || 4016 zc->zc_share.z_sharetype == ZFS_SHARE_SMB) ? 4017 SHAREFS_ADD : SHAREFS_REMOVE; 4018 4019 /* 4020 * Add or remove share from sharetab 4021 */ 4022 error = zshare_fs(opcode, 4023 (void *)(uintptr_t)zc->zc_share.z_sharedata, 4024 zc->zc_share.z_sharemax); 4025 4026 return (error); 4027 4028 } 4029 4030 ace_t full_access[] = { 4031 {(uid_t)-1, ACE_ALL_PERMS, ACE_EVERYONE, 0} 4032 }; 4033 4034 /* 4035 * Remove all ACL files in shares dir 4036 */ 4037 static int 4038 zfs_smb_acl_purge(znode_t *dzp) 4039 { 4040 zap_cursor_t zc; 4041 zap_attribute_t zap; 4042 zfsvfs_t *zfsvfs = dzp->z_zfsvfs; 4043 int error; 4044 4045 for (zap_cursor_init(&zc, zfsvfs->z_os, dzp->z_id); 4046 (error = zap_cursor_retrieve(&zc, &zap)) == 0; 4047 zap_cursor_advance(&zc)) { 4048 if ((error = VOP_REMOVE(ZTOV(dzp), zap.za_name, kcred, 4049 NULL, 0)) != 0) 4050 break; 4051 } 4052 zap_cursor_fini(&zc); 4053 return (error); 4054 } 4055 4056 static int 4057 zfs_ioc_smb_acl(zfs_cmd_t *zc) 4058 { 4059 vnode_t *vp; 4060 znode_t *dzp; 4061 vnode_t *resourcevp = NULL; 4062 znode_t *sharedir; 4063 zfsvfs_t *zfsvfs; 4064 nvlist_t *nvlist; 4065 char *src, *target; 4066 vattr_t vattr; 4067 vsecattr_t vsec; 4068 int error = 0; 4069 4070 if ((error = lookupname(zc->zc_value, UIO_SYSSPACE, 4071 NO_FOLLOW, NULL, &vp)) != 0) 4072 return (error); 4073 4074 /* Now make sure mntpnt and dataset are ZFS */ 4075 4076 if (vp->v_vfsp->vfs_fstype != zfsfstype || 4077 (strcmp((char *)refstr_value(vp->v_vfsp->vfs_resource), 4078 zc->zc_name) != 0)) { 4079 VN_RELE(vp); 4080 return (EINVAL); 4081 } 4082 4083 dzp = VTOZ(vp); 4084 zfsvfs = dzp->z_zfsvfs; 4085 ZFS_ENTER(zfsvfs); 4086 4087 /* 4088 * Create share dir if its missing. 4089 */ 4090 mutex_enter(&zfsvfs->z_lock); 4091 if (zfsvfs->z_shares_dir == 0) { 4092 dmu_tx_t *tx; 4093 4094 tx = dmu_tx_create(zfsvfs->z_os); 4095 dmu_tx_hold_zap(tx, MASTER_NODE_OBJ, TRUE, 4096 ZFS_SHARES_DIR); 4097 dmu_tx_hold_zap(tx, DMU_NEW_OBJECT, FALSE, NULL); 4098 error = dmu_tx_assign(tx, TXG_WAIT); 4099 if (error) { 4100 dmu_tx_abort(tx); 4101 } else { 4102 error = zfs_create_share_dir(zfsvfs, tx); 4103 dmu_tx_commit(tx); 4104 } 4105 if (error) { 4106 mutex_exit(&zfsvfs->z_lock); 4107 VN_RELE(vp); 4108 ZFS_EXIT(zfsvfs); 4109 return (error); 4110 } 4111 } 4112 mutex_exit(&zfsvfs->z_lock); 4113 4114 ASSERT(zfsvfs->z_shares_dir); 4115 if ((error = zfs_zget(zfsvfs, zfsvfs->z_shares_dir, &sharedir)) != 0) { 4116 VN_RELE(vp); 4117 ZFS_EXIT(zfsvfs); 4118 return (error); 4119 } 4120 4121 switch (zc->zc_cookie) { 4122 case ZFS_SMB_ACL_ADD: 4123 vattr.va_mask = AT_MODE|AT_UID|AT_GID|AT_TYPE; 4124 vattr.va_type = VREG; 4125 vattr.va_mode = S_IFREG|0777; 4126 vattr.va_uid = 0; 4127 vattr.va_gid = 0; 4128 4129 vsec.vsa_mask = VSA_ACE; 4130 vsec.vsa_aclentp = &full_access; 4131 vsec.vsa_aclentsz = sizeof (full_access); 4132 vsec.vsa_aclcnt = 1; 4133 4134 error = VOP_CREATE(ZTOV(sharedir), zc->zc_string, 4135 &vattr, EXCL, 0, &resourcevp, kcred, 0, NULL, &vsec); 4136 if (resourcevp) 4137 VN_RELE(resourcevp); 4138 break; 4139 4140 case ZFS_SMB_ACL_REMOVE: 4141 error = VOP_REMOVE(ZTOV(sharedir), zc->zc_string, kcred, 4142 NULL, 0); 4143 break; 4144 4145 case ZFS_SMB_ACL_RENAME: 4146 if ((error = get_nvlist(zc->zc_nvlist_src, 4147 zc->zc_nvlist_src_size, zc->zc_iflags, &nvlist)) != 0) { 4148 VN_RELE(vp); 4149 ZFS_EXIT(zfsvfs); 4150 return (error); 4151 } 4152 if (nvlist_lookup_string(nvlist, ZFS_SMB_ACL_SRC, &src) || 4153 nvlist_lookup_string(nvlist, ZFS_SMB_ACL_TARGET, 4154 &target)) { 4155 VN_RELE(vp); 4156 VN_RELE(ZTOV(sharedir)); 4157 ZFS_EXIT(zfsvfs); 4158 nvlist_free(nvlist); 4159 return (error); 4160 } 4161 error = VOP_RENAME(ZTOV(sharedir), src, ZTOV(sharedir), target, 4162 kcred, NULL, 0); 4163 nvlist_free(nvlist); 4164 break; 4165 4166 case ZFS_SMB_ACL_PURGE: 4167 error = zfs_smb_acl_purge(sharedir); 4168 break; 4169 4170 default: 4171 error = EINVAL; 4172 break; 4173 } 4174 4175 VN_RELE(vp); 4176 VN_RELE(ZTOV(sharedir)); 4177 4178 ZFS_EXIT(zfsvfs); 4179 4180 return (error); 4181 } 4182 4183 /* 4184 * inputs: 4185 * zc_name name of filesystem 4186 * zc_value short name of snap 4187 * zc_string user-supplied tag for this reference 4188 * zc_cookie recursive flag 4189 * zc_temphold set if hold is temporary 4190 * 4191 * outputs: none 4192 */ 4193 static int 4194 zfs_ioc_hold(zfs_cmd_t *zc) 4195 { 4196 boolean_t recursive = zc->zc_cookie; 4197 4198 if (snapshot_namecheck(zc->zc_value, NULL, NULL) != 0) 4199 return (EINVAL); 4200 4201 return (dsl_dataset_user_hold(zc->zc_name, zc->zc_value, 4202 zc->zc_string, recursive, zc->zc_temphold)); 4203 } 4204 4205 /* 4206 * inputs: 4207 * zc_name name of dataset from which we're releasing a user reference 4208 * zc_value short name of snap 4209 * zc_string user-supplied tag for this reference 4210 * zc_cookie recursive flag 4211 * 4212 * outputs: none 4213 */ 4214 static int 4215 zfs_ioc_release(zfs_cmd_t *zc) 4216 { 4217 boolean_t recursive = zc->zc_cookie; 4218 4219 if (snapshot_namecheck(zc->zc_value, NULL, NULL) != 0) 4220 return (EINVAL); 4221 4222 return (dsl_dataset_user_release(zc->zc_name, zc->zc_value, 4223 zc->zc_string, recursive)); 4224 } 4225 4226 /* 4227 * inputs: 4228 * zc_name name of filesystem 4229 * 4230 * outputs: 4231 * zc_nvlist_src{_size} nvlist of snapshot holds 4232 */ 4233 static int 4234 zfs_ioc_get_holds(zfs_cmd_t *zc) 4235 { 4236 nvlist_t *nvp; 4237 int error; 4238 4239 if ((error = dsl_dataset_get_holds(zc->zc_name, &nvp)) == 0) { 4240 error = put_nvlist(zc, nvp); 4241 nvlist_free(nvp); 4242 } 4243 4244 return (error); 4245 } 4246 4247 /* 4248 * pool create, destroy, and export don't log the history as part of 4249 * zfsdev_ioctl, but rather zfs_ioc_pool_create, and zfs_ioc_pool_export 4250 * do the logging of those commands. 4251 */ 4252 static zfs_ioc_vec_t zfs_ioc_vec[] = { 4253 { zfs_ioc_pool_create, zfs_secpolicy_config, POOL_NAME, B_FALSE, 4254 B_FALSE }, 4255 { zfs_ioc_pool_destroy, zfs_secpolicy_config, POOL_NAME, B_FALSE, 4256 B_FALSE }, 4257 { zfs_ioc_pool_import, zfs_secpolicy_config, POOL_NAME, B_TRUE, 4258 B_FALSE }, 4259 { zfs_ioc_pool_export, zfs_secpolicy_config, POOL_NAME, B_FALSE, 4260 B_FALSE }, 4261 { zfs_ioc_pool_configs, zfs_secpolicy_none, NO_NAME, B_FALSE, 4262 B_FALSE }, 4263 { zfs_ioc_pool_stats, zfs_secpolicy_read, POOL_NAME, B_FALSE, 4264 B_FALSE }, 4265 { zfs_ioc_pool_tryimport, zfs_secpolicy_config, NO_NAME, B_FALSE, 4266 B_FALSE }, 4267 { zfs_ioc_pool_scan, zfs_secpolicy_config, POOL_NAME, B_TRUE, 4268 B_TRUE }, 4269 { zfs_ioc_pool_freeze, zfs_secpolicy_config, NO_NAME, B_FALSE, 4270 B_FALSE }, 4271 { zfs_ioc_pool_upgrade, zfs_secpolicy_config, POOL_NAME, B_TRUE, 4272 B_TRUE }, 4273 { zfs_ioc_pool_get_history, zfs_secpolicy_config, POOL_NAME, B_FALSE, 4274 B_FALSE }, 4275 { zfs_ioc_vdev_add, zfs_secpolicy_config, POOL_NAME, B_TRUE, 4276 B_TRUE }, 4277 { zfs_ioc_vdev_remove, zfs_secpolicy_config, POOL_NAME, B_TRUE, 4278 B_TRUE }, 4279 { zfs_ioc_vdev_set_state, zfs_secpolicy_config, POOL_NAME, B_TRUE, 4280 B_FALSE }, 4281 { zfs_ioc_vdev_attach, zfs_secpolicy_config, POOL_NAME, B_TRUE, 4282 B_TRUE }, 4283 { zfs_ioc_vdev_detach, zfs_secpolicy_config, POOL_NAME, B_TRUE, 4284 B_TRUE }, 4285 { zfs_ioc_vdev_setpath, zfs_secpolicy_config, POOL_NAME, B_FALSE, 4286 B_TRUE }, 4287 { zfs_ioc_vdev_setfru, zfs_secpolicy_config, POOL_NAME, B_FALSE, 4288 B_TRUE }, 4289 { zfs_ioc_objset_stats, zfs_secpolicy_read, DATASET_NAME, B_FALSE, 4290 B_TRUE }, 4291 { zfs_ioc_objset_zplprops, zfs_secpolicy_read, DATASET_NAME, B_FALSE, 4292 B_FALSE }, 4293 { zfs_ioc_dataset_list_next, zfs_secpolicy_read, DATASET_NAME, B_FALSE, 4294 B_TRUE }, 4295 { zfs_ioc_snapshot_list_next, zfs_secpolicy_read, DATASET_NAME, B_FALSE, 4296 B_TRUE }, 4297 { zfs_ioc_set_prop, zfs_secpolicy_none, DATASET_NAME, B_TRUE, B_TRUE }, 4298 { zfs_ioc_create, zfs_secpolicy_create, DATASET_NAME, B_TRUE, B_TRUE }, 4299 { zfs_ioc_destroy, zfs_secpolicy_destroy, DATASET_NAME, B_TRUE, 4300 B_TRUE}, 4301 { zfs_ioc_rollback, zfs_secpolicy_rollback, DATASET_NAME, B_TRUE, 4302 B_TRUE }, 4303 { zfs_ioc_rename, zfs_secpolicy_rename, DATASET_NAME, B_TRUE, B_TRUE }, 4304 { zfs_ioc_recv, zfs_secpolicy_receive, DATASET_NAME, B_TRUE, B_TRUE }, 4305 { zfs_ioc_send, zfs_secpolicy_send, DATASET_NAME, B_TRUE, B_FALSE }, 4306 { zfs_ioc_inject_fault, zfs_secpolicy_inject, NO_NAME, B_FALSE, 4307 B_FALSE }, 4308 { zfs_ioc_clear_fault, zfs_secpolicy_inject, NO_NAME, B_FALSE, 4309 B_FALSE }, 4310 { zfs_ioc_inject_list_next, zfs_secpolicy_inject, NO_NAME, B_FALSE, 4311 B_FALSE }, 4312 { zfs_ioc_error_log, zfs_secpolicy_inject, POOL_NAME, B_FALSE, 4313 B_FALSE }, 4314 { zfs_ioc_clear, zfs_secpolicy_config, POOL_NAME, B_TRUE, B_FALSE }, 4315 { zfs_ioc_promote, zfs_secpolicy_promote, DATASET_NAME, B_TRUE, 4316 B_TRUE }, 4317 { zfs_ioc_destroy_snaps, zfs_secpolicy_destroy_snaps, DATASET_NAME, 4318 B_TRUE, B_TRUE }, 4319 { zfs_ioc_snapshot, zfs_secpolicy_snapshot, DATASET_NAME, B_TRUE, 4320 B_TRUE }, 4321 { zfs_ioc_dsobj_to_dsname, zfs_secpolicy_config, POOL_NAME, B_FALSE, 4322 B_FALSE }, 4323 { zfs_ioc_obj_to_path, zfs_secpolicy_config, DATASET_NAME, B_FALSE, 4324 B_TRUE }, 4325 { zfs_ioc_pool_set_props, zfs_secpolicy_config, POOL_NAME, B_TRUE, 4326 B_TRUE }, 4327 { zfs_ioc_pool_get_props, zfs_secpolicy_read, POOL_NAME, B_FALSE, 4328 B_FALSE }, 4329 { zfs_ioc_set_fsacl, zfs_secpolicy_fsacl, DATASET_NAME, B_TRUE, 4330 B_TRUE }, 4331 { zfs_ioc_get_fsacl, zfs_secpolicy_read, DATASET_NAME, B_FALSE, 4332 B_FALSE }, 4333 { zfs_ioc_share, zfs_secpolicy_share, DATASET_NAME, B_FALSE, B_FALSE }, 4334 { zfs_ioc_inherit_prop, zfs_secpolicy_inherit, DATASET_NAME, B_TRUE, 4335 B_TRUE }, 4336 { zfs_ioc_smb_acl, zfs_secpolicy_smb_acl, DATASET_NAME, B_FALSE, 4337 B_FALSE }, 4338 { zfs_ioc_userspace_one, zfs_secpolicy_userspace_one, 4339 DATASET_NAME, B_FALSE, B_FALSE }, 4340 { zfs_ioc_userspace_many, zfs_secpolicy_userspace_many, 4341 DATASET_NAME, B_FALSE, B_FALSE }, 4342 { zfs_ioc_userspace_upgrade, zfs_secpolicy_userspace_upgrade, 4343 DATASET_NAME, B_FALSE, B_TRUE }, 4344 { zfs_ioc_hold, zfs_secpolicy_hold, DATASET_NAME, B_TRUE, B_TRUE }, 4345 { zfs_ioc_release, zfs_secpolicy_release, DATASET_NAME, B_TRUE, 4346 B_TRUE }, 4347 { zfs_ioc_get_holds, zfs_secpolicy_read, DATASET_NAME, B_FALSE, 4348 B_TRUE }, 4349 { zfs_ioc_objset_recvd_props, zfs_secpolicy_read, DATASET_NAME, B_FALSE, 4350 B_FALSE }, 4351 { zfs_ioc_vdev_split, zfs_secpolicy_config, POOL_NAME, B_TRUE, 4352 B_TRUE } 4353 }; 4354 4355 int 4356 pool_status_check(const char *name, zfs_ioc_namecheck_t type) 4357 { 4358 spa_t *spa; 4359 int error; 4360 4361 ASSERT(type == POOL_NAME || type == DATASET_NAME); 4362 4363 error = spa_open(name, &spa, FTAG); 4364 if (error == 0) { 4365 if (spa_suspended(spa)) 4366 error = EAGAIN; 4367 spa_close(spa, FTAG); 4368 } 4369 return (error); 4370 } 4371 4372 static int 4373 zfsdev_ioctl(dev_t dev, int cmd, intptr_t arg, int flag, cred_t *cr, int *rvalp) 4374 { 4375 zfs_cmd_t *zc; 4376 uint_t vec; 4377 int error, rc; 4378 4379 if (getminor(dev) != 0) 4380 return (zvol_ioctl(dev, cmd, arg, flag, cr, rvalp)); 4381 4382 vec = cmd - ZFS_IOC; 4383 ASSERT3U(getmajor(dev), ==, ddi_driver_major(zfs_dip)); 4384 4385 if (vec >= sizeof (zfs_ioc_vec) / sizeof (zfs_ioc_vec[0])) 4386 return (EINVAL); 4387 4388 zc = kmem_zalloc(sizeof (zfs_cmd_t), KM_SLEEP); 4389 4390 error = ddi_copyin((void *)arg, zc, sizeof (zfs_cmd_t), flag); 4391 if (error != 0) 4392 error = EFAULT; 4393 4394 if ((error == 0) && !(flag & FKIOCTL)) 4395 error = zfs_ioc_vec[vec].zvec_secpolicy(zc, cr); 4396 4397 /* 4398 * Ensure that all pool/dataset names are valid before we pass down to 4399 * the lower layers. 4400 */ 4401 if (error == 0) { 4402 zc->zc_name[sizeof (zc->zc_name) - 1] = '\0'; 4403 zc->zc_iflags = flag & FKIOCTL; 4404 switch (zfs_ioc_vec[vec].zvec_namecheck) { 4405 case POOL_NAME: 4406 if (pool_namecheck(zc->zc_name, NULL, NULL) != 0) 4407 error = EINVAL; 4408 if (zfs_ioc_vec[vec].zvec_pool_check) 4409 error = pool_status_check(zc->zc_name, 4410 zfs_ioc_vec[vec].zvec_namecheck); 4411 break; 4412 4413 case DATASET_NAME: 4414 if (dataset_namecheck(zc->zc_name, NULL, NULL) != 0) 4415 error = EINVAL; 4416 if (zfs_ioc_vec[vec].zvec_pool_check) 4417 error = pool_status_check(zc->zc_name, 4418 zfs_ioc_vec[vec].zvec_namecheck); 4419 break; 4420 4421 case NO_NAME: 4422 break; 4423 } 4424 } 4425 4426 if (error == 0) 4427 error = zfs_ioc_vec[vec].zvec_func(zc); 4428 4429 rc = ddi_copyout(zc, (void *)arg, sizeof (zfs_cmd_t), flag); 4430 if (error == 0) { 4431 if (rc != 0) 4432 error = EFAULT; 4433 if (zfs_ioc_vec[vec].zvec_his_log) 4434 zfs_log_history(zc); 4435 } 4436 4437 kmem_free(zc, sizeof (zfs_cmd_t)); 4438 return (error); 4439 } 4440 4441 static int 4442 zfs_attach(dev_info_t *dip, ddi_attach_cmd_t cmd) 4443 { 4444 if (cmd != DDI_ATTACH) 4445 return (DDI_FAILURE); 4446 4447 if (ddi_create_minor_node(dip, "zfs", S_IFCHR, 0, 4448 DDI_PSEUDO, 0) == DDI_FAILURE) 4449 return (DDI_FAILURE); 4450 4451 zfs_dip = dip; 4452 4453 ddi_report_dev(dip); 4454 4455 return (DDI_SUCCESS); 4456 } 4457 4458 static int 4459 zfs_detach(dev_info_t *dip, ddi_detach_cmd_t cmd) 4460 { 4461 if (spa_busy() || zfs_busy() || zvol_busy()) 4462 return (DDI_FAILURE); 4463 4464 if (cmd != DDI_DETACH) 4465 return (DDI_FAILURE); 4466 4467 zfs_dip = NULL; 4468 4469 ddi_prop_remove_all(dip); 4470 ddi_remove_minor_node(dip, NULL); 4471 4472 return (DDI_SUCCESS); 4473 } 4474 4475 /*ARGSUSED*/ 4476 static int 4477 zfs_info(dev_info_t *dip, ddi_info_cmd_t infocmd, void *arg, void **result) 4478 { 4479 switch (infocmd) { 4480 case DDI_INFO_DEVT2DEVINFO: 4481 *result = zfs_dip; 4482 return (DDI_SUCCESS); 4483 4484 case DDI_INFO_DEVT2INSTANCE: 4485 *result = (void *)0; 4486 return (DDI_SUCCESS); 4487 } 4488 4489 return (DDI_FAILURE); 4490 } 4491 4492 /* 4493 * OK, so this is a little weird. 4494 * 4495 * /dev/zfs is the control node, i.e. minor 0. 4496 * /dev/zvol/[r]dsk/pool/dataset are the zvols, minor > 0. 4497 * 4498 * /dev/zfs has basically nothing to do except serve up ioctls, 4499 * so most of the standard driver entry points are in zvol.c. 4500 */ 4501 static struct cb_ops zfs_cb_ops = { 4502 zvol_open, /* open */ 4503 zvol_close, /* close */ 4504 zvol_strategy, /* strategy */ 4505 nodev, /* print */ 4506 zvol_dump, /* dump */ 4507 zvol_read, /* read */ 4508 zvol_write, /* write */ 4509 zfsdev_ioctl, /* ioctl */ 4510 nodev, /* devmap */ 4511 nodev, /* mmap */ 4512 nodev, /* segmap */ 4513 nochpoll, /* poll */ 4514 ddi_prop_op, /* prop_op */ 4515 NULL, /* streamtab */ 4516 D_NEW | D_MP | D_64BIT, /* Driver compatibility flag */ 4517 CB_REV, /* version */ 4518 nodev, /* async read */ 4519 nodev, /* async write */ 4520 }; 4521 4522 static struct dev_ops zfs_dev_ops = { 4523 DEVO_REV, /* version */ 4524 0, /* refcnt */ 4525 zfs_info, /* info */ 4526 nulldev, /* identify */ 4527 nulldev, /* probe */ 4528 zfs_attach, /* attach */ 4529 zfs_detach, /* detach */ 4530 nodev, /* reset */ 4531 &zfs_cb_ops, /* driver operations */ 4532 NULL, /* no bus operations */ 4533 NULL, /* power */ 4534 ddi_quiesce_not_needed, /* quiesce */ 4535 }; 4536 4537 static struct modldrv zfs_modldrv = { 4538 &mod_driverops, 4539 "ZFS storage pool", 4540 &zfs_dev_ops 4541 }; 4542 4543 static struct modlinkage modlinkage = { 4544 MODREV_1, 4545 (void *)&zfs_modlfs, 4546 (void *)&zfs_modldrv, 4547 NULL 4548 }; 4549 4550 4551 uint_t zfs_fsyncer_key; 4552 extern uint_t rrw_tsd_key; 4553 4554 int 4555 _init(void) 4556 { 4557 int error; 4558 4559 spa_init(FREAD | FWRITE); 4560 zfs_init(); 4561 zvol_init(); 4562 4563 if ((error = mod_install(&modlinkage)) != 0) { 4564 zvol_fini(); 4565 zfs_fini(); 4566 spa_fini(); 4567 return (error); 4568 } 4569 4570 tsd_create(&zfs_fsyncer_key, NULL); 4571 tsd_create(&rrw_tsd_key, NULL); 4572 4573 error = ldi_ident_from_mod(&modlinkage, &zfs_li); 4574 ASSERT(error == 0); 4575 mutex_init(&zfs_share_lock, NULL, MUTEX_DEFAULT, NULL); 4576 4577 return (0); 4578 } 4579 4580 int 4581 _fini(void) 4582 { 4583 int error; 4584 4585 if (spa_busy() || zfs_busy() || zvol_busy() || zio_injection_enabled) 4586 return (EBUSY); 4587 4588 if ((error = mod_remove(&modlinkage)) != 0) 4589 return (error); 4590 4591 zvol_fini(); 4592 zfs_fini(); 4593 spa_fini(); 4594 if (zfs_nfsshare_inited) 4595 (void) ddi_modclose(nfs_mod); 4596 if (zfs_smbshare_inited) 4597 (void) ddi_modclose(smbsrv_mod); 4598 if (zfs_nfsshare_inited || zfs_smbshare_inited) 4599 (void) ddi_modclose(sharefs_mod); 4600 4601 tsd_destroy(&zfs_fsyncer_key); 4602 ldi_ident_release(zfs_li); 4603 zfs_li = NULL; 4604 mutex_destroy(&zfs_share_lock); 4605 4606 return (error); 4607 } 4608 4609 int 4610 _info(struct modinfo *modinfop) 4611 { 4612 return (mod_info(&modlinkage, modinfop)); 4613 } 4614