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/zfs_onexit.h> 64 #include <sys/zvol.h> 65 #include <sys/dsl_scan.h> 66 #include <sharefs/share.h> 67 #include <sys/dmu_objset.h> 68 69 #include "zfs_namecheck.h" 70 #include "zfs_prop.h" 71 #include "zfs_deleg.h" 72 #include "zfs_comutil.h" 73 74 extern struct modlfs zfs_modlfs; 75 76 extern void zfs_init(void); 77 extern void zfs_fini(void); 78 79 ldi_ident_t zfs_li = NULL; 80 dev_info_t *zfs_dip; 81 82 typedef int zfs_ioc_func_t(zfs_cmd_t *); 83 typedef int zfs_secpolicy_func_t(zfs_cmd_t *, cred_t *); 84 85 typedef enum { 86 NO_NAME, 87 POOL_NAME, 88 DATASET_NAME 89 } zfs_ioc_namecheck_t; 90 91 typedef struct zfs_ioc_vec { 92 zfs_ioc_func_t *zvec_func; 93 zfs_secpolicy_func_t *zvec_secpolicy; 94 zfs_ioc_namecheck_t zvec_namecheck; 95 boolean_t zvec_his_log; 96 boolean_t zvec_pool_check; 97 } zfs_ioc_vec_t; 98 99 /* This array is indexed by zfs_userquota_prop_t */ 100 static const char *userquota_perms[] = { 101 ZFS_DELEG_PERM_USERUSED, 102 ZFS_DELEG_PERM_USERQUOTA, 103 ZFS_DELEG_PERM_GROUPUSED, 104 ZFS_DELEG_PERM_GROUPQUOTA, 105 }; 106 107 static int zfs_ioc_userspace_upgrade(zfs_cmd_t *zc); 108 static int zfs_check_settable(const char *name, nvpair_t *property, 109 cred_t *cr); 110 static int zfs_check_clearable(char *dataset, nvlist_t *props, 111 nvlist_t **errors); 112 static int zfs_fill_zplprops_root(uint64_t, nvlist_t *, nvlist_t *, 113 boolean_t *); 114 int zfs_set_prop_nvlist(const char *, zprop_source_t, nvlist_t *, nvlist_t **); 115 116 /* _NOTE(PRINTFLIKE(4)) - this is printf-like, but lint is too whiney */ 117 void 118 __dprintf(const char *file, const char *func, int line, const char *fmt, ...) 119 { 120 const char *newfile; 121 char buf[512]; 122 va_list adx; 123 124 /* 125 * Get rid of annoying "../common/" prefix to filename. 126 */ 127 newfile = strrchr(file, '/'); 128 if (newfile != NULL) { 129 newfile = newfile + 1; /* Get rid of leading / */ 130 } else { 131 newfile = file; 132 } 133 134 va_start(adx, fmt); 135 (void) vsnprintf(buf, sizeof (buf), fmt, adx); 136 va_end(adx); 137 138 /* 139 * To get this data, use the zfs-dprintf probe as so: 140 * dtrace -q -n 'zfs-dprintf \ 141 * /stringof(arg0) == "dbuf.c"/ \ 142 * {printf("%s: %s", stringof(arg1), stringof(arg3))}' 143 * arg0 = file name 144 * arg1 = function name 145 * arg2 = line number 146 * arg3 = message 147 */ 148 DTRACE_PROBE4(zfs__dprintf, 149 char *, newfile, char *, func, int, line, char *, buf); 150 } 151 152 static void 153 history_str_free(char *buf) 154 { 155 kmem_free(buf, HIS_MAX_RECORD_LEN); 156 } 157 158 static char * 159 history_str_get(zfs_cmd_t *zc) 160 { 161 char *buf; 162 163 if (zc->zc_history == NULL) 164 return (NULL); 165 166 buf = kmem_alloc(HIS_MAX_RECORD_LEN, KM_SLEEP); 167 if (copyinstr((void *)(uintptr_t)zc->zc_history, 168 buf, HIS_MAX_RECORD_LEN, NULL) != 0) { 169 history_str_free(buf); 170 return (NULL); 171 } 172 173 buf[HIS_MAX_RECORD_LEN -1] = '\0'; 174 175 return (buf); 176 } 177 178 /* 179 * Check to see if the named dataset is currently defined as bootable 180 */ 181 static boolean_t 182 zfs_is_bootfs(const char *name) 183 { 184 objset_t *os; 185 186 if (dmu_objset_hold(name, FTAG, &os) == 0) { 187 boolean_t ret; 188 ret = (dmu_objset_id(os) == spa_bootfs(dmu_objset_spa(os))); 189 dmu_objset_rele(os, FTAG); 190 return (ret); 191 } 192 return (B_FALSE); 193 } 194 195 /* 196 * zfs_earlier_version 197 * 198 * Return non-zero if the spa version is less than requested version. 199 */ 200 static int 201 zfs_earlier_version(const char *name, int version) 202 { 203 spa_t *spa; 204 205 if (spa_open(name, &spa, FTAG) == 0) { 206 if (spa_version(spa) < version) { 207 spa_close(spa, FTAG); 208 return (1); 209 } 210 spa_close(spa, FTAG); 211 } 212 return (0); 213 } 214 215 /* 216 * zpl_earlier_version 217 * 218 * Return TRUE if the ZPL version is less than requested version. 219 */ 220 static boolean_t 221 zpl_earlier_version(const char *name, int version) 222 { 223 objset_t *os; 224 boolean_t rc = B_TRUE; 225 226 if (dmu_objset_hold(name, FTAG, &os) == 0) { 227 uint64_t zplversion; 228 229 if (dmu_objset_type(os) != DMU_OST_ZFS) { 230 dmu_objset_rele(os, FTAG); 231 return (B_TRUE); 232 } 233 /* XXX reading from non-owned objset */ 234 if (zfs_get_zplprop(os, ZFS_PROP_VERSION, &zplversion) == 0) 235 rc = zplversion < version; 236 dmu_objset_rele(os, FTAG); 237 } 238 return (rc); 239 } 240 241 static void 242 zfs_log_history(zfs_cmd_t *zc) 243 { 244 spa_t *spa; 245 char *buf; 246 247 if ((buf = history_str_get(zc)) == NULL) 248 return; 249 250 if (spa_open(zc->zc_name, &spa, FTAG) == 0) { 251 if (spa_version(spa) >= SPA_VERSION_ZPOOL_HISTORY) 252 (void) spa_history_log(spa, buf, LOG_CMD_NORMAL); 253 spa_close(spa, FTAG); 254 } 255 history_str_free(buf); 256 } 257 258 /* 259 * Policy for top-level read operations (list pools). Requires no privileges, 260 * and can be used in the local zone, as there is no associated dataset. 261 */ 262 /* ARGSUSED */ 263 static int 264 zfs_secpolicy_none(zfs_cmd_t *zc, cred_t *cr) 265 { 266 return (0); 267 } 268 269 /* 270 * Policy for dataset read operations (list children, get statistics). Requires 271 * no privileges, but must be visible in the local zone. 272 */ 273 /* ARGSUSED */ 274 static int 275 zfs_secpolicy_read(zfs_cmd_t *zc, cred_t *cr) 276 { 277 if (INGLOBALZONE(curproc) || 278 zone_dataset_visible(zc->zc_name, NULL)) 279 return (0); 280 281 return (ENOENT); 282 } 283 284 static int 285 zfs_dozonecheck(const char *dataset, cred_t *cr) 286 { 287 uint64_t zoned; 288 int writable = 1; 289 290 /* 291 * The dataset must be visible by this zone -- check this first 292 * so they don't see EPERM on something they shouldn't know about. 293 */ 294 if (!INGLOBALZONE(curproc) && 295 !zone_dataset_visible(dataset, &writable)) 296 return (ENOENT); 297 298 if (dsl_prop_get_integer(dataset, "zoned", &zoned, NULL)) 299 return (ENOENT); 300 301 if (INGLOBALZONE(curproc)) { 302 /* 303 * If the fs is zoned, only root can access it from the 304 * global zone. 305 */ 306 if (secpolicy_zfs(cr) && zoned) 307 return (EPERM); 308 } else { 309 /* 310 * If we are in a local zone, the 'zoned' property must be set. 311 */ 312 if (!zoned) 313 return (EPERM); 314 315 /* must be writable by this zone */ 316 if (!writable) 317 return (EPERM); 318 } 319 return (0); 320 } 321 322 int 323 zfs_secpolicy_write_perms(const char *name, const char *perm, cred_t *cr) 324 { 325 int error; 326 327 error = zfs_dozonecheck(name, cr); 328 if (error == 0) { 329 error = secpolicy_zfs(cr); 330 if (error) 331 error = dsl_deleg_access(name, perm, cr); 332 } 333 return (error); 334 } 335 336 /* 337 * Policy for setting the security label property. 338 * 339 * Returns 0 for success, non-zero for access and other errors. 340 */ 341 static int 342 zfs_set_slabel_policy(const char *name, char *strval, cred_t *cr) 343 { 344 char ds_hexsl[MAXNAMELEN]; 345 bslabel_t ds_sl, new_sl; 346 boolean_t new_default = FALSE; 347 uint64_t zoned; 348 int needed_priv = -1; 349 int error; 350 351 /* First get the existing dataset label. */ 352 error = dsl_prop_get(name, zfs_prop_to_name(ZFS_PROP_MLSLABEL), 353 1, sizeof (ds_hexsl), &ds_hexsl, NULL); 354 if (error) 355 return (EPERM); 356 357 if (strcasecmp(strval, ZFS_MLSLABEL_DEFAULT) == 0) 358 new_default = TRUE; 359 360 /* The label must be translatable */ 361 if (!new_default && (hexstr_to_label(strval, &new_sl) != 0)) 362 return (EINVAL); 363 364 /* 365 * In a non-global zone, disallow attempts to set a label that 366 * doesn't match that of the zone; otherwise no other checks 367 * are needed. 368 */ 369 if (!INGLOBALZONE(curproc)) { 370 if (new_default || !blequal(&new_sl, CR_SL(CRED()))) 371 return (EPERM); 372 return (0); 373 } 374 375 /* 376 * For global-zone datasets (i.e., those whose zoned property is 377 * "off", verify that the specified new label is valid for the 378 * global zone. 379 */ 380 if (dsl_prop_get_integer(name, 381 zfs_prop_to_name(ZFS_PROP_ZONED), &zoned, NULL)) 382 return (EPERM); 383 if (!zoned) { 384 if (zfs_check_global_label(name, strval) != 0) 385 return (EPERM); 386 } 387 388 /* 389 * If the existing dataset label is nondefault, check if the 390 * dataset is mounted (label cannot be changed while mounted). 391 * Get the zfsvfs; if there isn't one, then the dataset isn't 392 * mounted (or isn't a dataset, doesn't exist, ...). 393 */ 394 if (strcasecmp(ds_hexsl, ZFS_MLSLABEL_DEFAULT) != 0) { 395 objset_t *os; 396 static char *setsl_tag = "setsl_tag"; 397 398 /* 399 * Try to own the dataset; abort if there is any error, 400 * (e.g., already mounted, in use, or other error). 401 */ 402 error = dmu_objset_own(name, DMU_OST_ZFS, B_TRUE, 403 setsl_tag, &os); 404 if (error) 405 return (EPERM); 406 407 dmu_objset_disown(os, setsl_tag); 408 409 if (new_default) { 410 needed_priv = PRIV_FILE_DOWNGRADE_SL; 411 goto out_check; 412 } 413 414 if (hexstr_to_label(strval, &new_sl) != 0) 415 return (EPERM); 416 417 if (blstrictdom(&ds_sl, &new_sl)) 418 needed_priv = PRIV_FILE_DOWNGRADE_SL; 419 else if (blstrictdom(&new_sl, &ds_sl)) 420 needed_priv = PRIV_FILE_UPGRADE_SL; 421 } else { 422 /* dataset currently has a default label */ 423 if (!new_default) 424 needed_priv = PRIV_FILE_UPGRADE_SL; 425 } 426 427 out_check: 428 if (needed_priv != -1) 429 return (PRIV_POLICY(cr, needed_priv, B_FALSE, EPERM, NULL)); 430 return (0); 431 } 432 433 static int 434 zfs_secpolicy_setprop(const char *dsname, zfs_prop_t prop, nvpair_t *propval, 435 cred_t *cr) 436 { 437 char *strval; 438 439 /* 440 * Check permissions for special properties. 441 */ 442 switch (prop) { 443 case ZFS_PROP_ZONED: 444 /* 445 * Disallow setting of 'zoned' from within a local zone. 446 */ 447 if (!INGLOBALZONE(curproc)) 448 return (EPERM); 449 break; 450 451 case ZFS_PROP_QUOTA: 452 if (!INGLOBALZONE(curproc)) { 453 uint64_t zoned; 454 char setpoint[MAXNAMELEN]; 455 /* 456 * Unprivileged users are allowed to modify the 457 * quota on things *under* (ie. contained by) 458 * the thing they own. 459 */ 460 if (dsl_prop_get_integer(dsname, "zoned", &zoned, 461 setpoint)) 462 return (EPERM); 463 if (!zoned || strlen(dsname) <= strlen(setpoint)) 464 return (EPERM); 465 } 466 break; 467 468 case ZFS_PROP_MLSLABEL: 469 if (!is_system_labeled()) 470 return (EPERM); 471 472 if (nvpair_value_string(propval, &strval) == 0) { 473 int err; 474 475 err = zfs_set_slabel_policy(dsname, strval, CRED()); 476 if (err != 0) 477 return (err); 478 } 479 break; 480 } 481 482 return (zfs_secpolicy_write_perms(dsname, zfs_prop_to_name(prop), cr)); 483 } 484 485 int 486 zfs_secpolicy_fsacl(zfs_cmd_t *zc, cred_t *cr) 487 { 488 int error; 489 490 error = zfs_dozonecheck(zc->zc_name, cr); 491 if (error) 492 return (error); 493 494 /* 495 * permission to set permissions will be evaluated later in 496 * dsl_deleg_can_allow() 497 */ 498 return (0); 499 } 500 501 int 502 zfs_secpolicy_rollback(zfs_cmd_t *zc, cred_t *cr) 503 { 504 return (zfs_secpolicy_write_perms(zc->zc_name, 505 ZFS_DELEG_PERM_ROLLBACK, cr)); 506 } 507 508 int 509 zfs_secpolicy_send(zfs_cmd_t *zc, cred_t *cr) 510 { 511 return (zfs_secpolicy_write_perms(zc->zc_name, 512 ZFS_DELEG_PERM_SEND, cr)); 513 } 514 515 static int 516 zfs_secpolicy_deleg_share(zfs_cmd_t *zc, cred_t *cr) 517 { 518 vnode_t *vp; 519 int error; 520 521 if ((error = lookupname(zc->zc_value, UIO_SYSSPACE, 522 NO_FOLLOW, NULL, &vp)) != 0) 523 return (error); 524 525 /* Now make sure mntpnt and dataset are ZFS */ 526 527 if (vp->v_vfsp->vfs_fstype != zfsfstype || 528 (strcmp((char *)refstr_value(vp->v_vfsp->vfs_resource), 529 zc->zc_name) != 0)) { 530 VN_RELE(vp); 531 return (EPERM); 532 } 533 534 VN_RELE(vp); 535 return (dsl_deleg_access(zc->zc_name, 536 ZFS_DELEG_PERM_SHARE, cr)); 537 } 538 539 int 540 zfs_secpolicy_share(zfs_cmd_t *zc, cred_t *cr) 541 { 542 if (!INGLOBALZONE(curproc)) 543 return (EPERM); 544 545 if (secpolicy_nfs(cr) == 0) { 546 return (0); 547 } else { 548 return (zfs_secpolicy_deleg_share(zc, cr)); 549 } 550 } 551 552 int 553 zfs_secpolicy_smb_acl(zfs_cmd_t *zc, cred_t *cr) 554 { 555 if (!INGLOBALZONE(curproc)) 556 return (EPERM); 557 558 if (secpolicy_smb(cr) == 0) { 559 return (0); 560 } else { 561 return (zfs_secpolicy_deleg_share(zc, cr)); 562 } 563 } 564 565 static int 566 zfs_get_parent(const char *datasetname, char *parent, int parentsize) 567 { 568 char *cp; 569 570 /* 571 * Remove the @bla or /bla from the end of the name to get the parent. 572 */ 573 (void) strncpy(parent, datasetname, parentsize); 574 cp = strrchr(parent, '@'); 575 if (cp != NULL) { 576 cp[0] = '\0'; 577 } else { 578 cp = strrchr(parent, '/'); 579 if (cp == NULL) 580 return (ENOENT); 581 cp[0] = '\0'; 582 } 583 584 return (0); 585 } 586 587 int 588 zfs_secpolicy_destroy_perms(const char *name, cred_t *cr) 589 { 590 int error; 591 592 if ((error = zfs_secpolicy_write_perms(name, 593 ZFS_DELEG_PERM_MOUNT, cr)) != 0) 594 return (error); 595 596 return (zfs_secpolicy_write_perms(name, ZFS_DELEG_PERM_DESTROY, cr)); 597 } 598 599 static int 600 zfs_secpolicy_destroy(zfs_cmd_t *zc, cred_t *cr) 601 { 602 return (zfs_secpolicy_destroy_perms(zc->zc_name, cr)); 603 } 604 605 /* 606 * Destroying snapshots with delegated permissions requires 607 * descendent mount and destroy permissions. 608 * Reassemble the full filesystem@snap name so dsl_deleg_access() 609 * can do the correct permission check. 610 * 611 * Since this routine is used when doing a recursive destroy of snapshots 612 * and destroying snapshots requires descendent permissions, a successfull 613 * check of the top level snapshot applies to snapshots of all descendent 614 * datasets as well. 615 */ 616 static int 617 zfs_secpolicy_destroy_snaps(zfs_cmd_t *zc, cred_t *cr) 618 { 619 int error; 620 char *dsname; 621 622 dsname = kmem_asprintf("%s@%s", zc->zc_name, zc->zc_value); 623 624 error = zfs_secpolicy_destroy_perms(dsname, cr); 625 626 strfree(dsname); 627 return (error); 628 } 629 630 int 631 zfs_secpolicy_rename_perms(const char *from, const char *to, cred_t *cr) 632 { 633 char parentname[MAXNAMELEN]; 634 int error; 635 636 if ((error = zfs_secpolicy_write_perms(from, 637 ZFS_DELEG_PERM_RENAME, cr)) != 0) 638 return (error); 639 640 if ((error = zfs_secpolicy_write_perms(from, 641 ZFS_DELEG_PERM_MOUNT, cr)) != 0) 642 return (error); 643 644 if ((error = zfs_get_parent(to, parentname, 645 sizeof (parentname))) != 0) 646 return (error); 647 648 if ((error = zfs_secpolicy_write_perms(parentname, 649 ZFS_DELEG_PERM_CREATE, cr)) != 0) 650 return (error); 651 652 if ((error = zfs_secpolicy_write_perms(parentname, 653 ZFS_DELEG_PERM_MOUNT, cr)) != 0) 654 return (error); 655 656 return (error); 657 } 658 659 static int 660 zfs_secpolicy_rename(zfs_cmd_t *zc, cred_t *cr) 661 { 662 return (zfs_secpolicy_rename_perms(zc->zc_name, zc->zc_value, cr)); 663 } 664 665 static int 666 zfs_secpolicy_promote(zfs_cmd_t *zc, cred_t *cr) 667 { 668 char parentname[MAXNAMELEN]; 669 objset_t *clone; 670 int error; 671 672 error = zfs_secpolicy_write_perms(zc->zc_name, 673 ZFS_DELEG_PERM_PROMOTE, cr); 674 if (error) 675 return (error); 676 677 error = dmu_objset_hold(zc->zc_name, FTAG, &clone); 678 679 if (error == 0) { 680 dsl_dataset_t *pclone = NULL; 681 dsl_dir_t *dd; 682 dd = clone->os_dsl_dataset->ds_dir; 683 684 rw_enter(&dd->dd_pool->dp_config_rwlock, RW_READER); 685 error = dsl_dataset_hold_obj(dd->dd_pool, 686 dd->dd_phys->dd_origin_obj, FTAG, &pclone); 687 rw_exit(&dd->dd_pool->dp_config_rwlock); 688 if (error) { 689 dmu_objset_rele(clone, FTAG); 690 return (error); 691 } 692 693 error = zfs_secpolicy_write_perms(zc->zc_name, 694 ZFS_DELEG_PERM_MOUNT, cr); 695 696 dsl_dataset_name(pclone, parentname); 697 dmu_objset_rele(clone, FTAG); 698 dsl_dataset_rele(pclone, FTAG); 699 if (error == 0) 700 error = zfs_secpolicy_write_perms(parentname, 701 ZFS_DELEG_PERM_PROMOTE, cr); 702 } 703 return (error); 704 } 705 706 static int 707 zfs_secpolicy_receive(zfs_cmd_t *zc, cred_t *cr) 708 { 709 int error; 710 711 if ((error = zfs_secpolicy_write_perms(zc->zc_name, 712 ZFS_DELEG_PERM_RECEIVE, cr)) != 0) 713 return (error); 714 715 if ((error = zfs_secpolicy_write_perms(zc->zc_name, 716 ZFS_DELEG_PERM_MOUNT, cr)) != 0) 717 return (error); 718 719 return (zfs_secpolicy_write_perms(zc->zc_name, 720 ZFS_DELEG_PERM_CREATE, cr)); 721 } 722 723 int 724 zfs_secpolicy_snapshot_perms(const char *name, cred_t *cr) 725 { 726 return (zfs_secpolicy_write_perms(name, 727 ZFS_DELEG_PERM_SNAPSHOT, cr)); 728 } 729 730 static int 731 zfs_secpolicy_snapshot(zfs_cmd_t *zc, cred_t *cr) 732 { 733 734 return (zfs_secpolicy_snapshot_perms(zc->zc_name, cr)); 735 } 736 737 static int 738 zfs_secpolicy_create(zfs_cmd_t *zc, cred_t *cr) 739 { 740 char parentname[MAXNAMELEN]; 741 int error; 742 743 if ((error = zfs_get_parent(zc->zc_name, parentname, 744 sizeof (parentname))) != 0) 745 return (error); 746 747 if (zc->zc_value[0] != '\0') { 748 if ((error = zfs_secpolicy_write_perms(zc->zc_value, 749 ZFS_DELEG_PERM_CLONE, cr)) != 0) 750 return (error); 751 } 752 753 if ((error = zfs_secpolicy_write_perms(parentname, 754 ZFS_DELEG_PERM_CREATE, cr)) != 0) 755 return (error); 756 757 error = zfs_secpolicy_write_perms(parentname, 758 ZFS_DELEG_PERM_MOUNT, cr); 759 760 return (error); 761 } 762 763 static int 764 zfs_secpolicy_umount(zfs_cmd_t *zc, cred_t *cr) 765 { 766 int error; 767 768 error = secpolicy_fs_unmount(cr, NULL); 769 if (error) { 770 error = dsl_deleg_access(zc->zc_name, ZFS_DELEG_PERM_MOUNT, cr); 771 } 772 return (error); 773 } 774 775 /* 776 * Policy for pool operations - create/destroy pools, add vdevs, etc. Requires 777 * SYS_CONFIG privilege, which is not available in a local zone. 778 */ 779 /* ARGSUSED */ 780 static int 781 zfs_secpolicy_config(zfs_cmd_t *zc, cred_t *cr) 782 { 783 if (secpolicy_sys_config(cr, B_FALSE) != 0) 784 return (EPERM); 785 786 return (0); 787 } 788 789 /* 790 * Policy for fault injection. Requires all privileges. 791 */ 792 /* ARGSUSED */ 793 static int 794 zfs_secpolicy_inject(zfs_cmd_t *zc, cred_t *cr) 795 { 796 return (secpolicy_zinject(cr)); 797 } 798 799 static int 800 zfs_secpolicy_inherit(zfs_cmd_t *zc, cred_t *cr) 801 { 802 zfs_prop_t prop = zfs_name_to_prop(zc->zc_value); 803 804 if (prop == ZPROP_INVAL) { 805 if (!zfs_prop_user(zc->zc_value)) 806 return (EINVAL); 807 return (zfs_secpolicy_write_perms(zc->zc_name, 808 ZFS_DELEG_PERM_USERPROP, cr)); 809 } else { 810 return (zfs_secpolicy_setprop(zc->zc_name, prop, 811 NULL, cr)); 812 } 813 } 814 815 static int 816 zfs_secpolicy_userspace_one(zfs_cmd_t *zc, cred_t *cr) 817 { 818 int err = zfs_secpolicy_read(zc, cr); 819 if (err) 820 return (err); 821 822 if (zc->zc_objset_type >= ZFS_NUM_USERQUOTA_PROPS) 823 return (EINVAL); 824 825 if (zc->zc_value[0] == 0) { 826 /* 827 * They are asking about a posix uid/gid. If it's 828 * themself, allow it. 829 */ 830 if (zc->zc_objset_type == ZFS_PROP_USERUSED || 831 zc->zc_objset_type == ZFS_PROP_USERQUOTA) { 832 if (zc->zc_guid == crgetuid(cr)) 833 return (0); 834 } else { 835 if (groupmember(zc->zc_guid, cr)) 836 return (0); 837 } 838 } 839 840 return (zfs_secpolicy_write_perms(zc->zc_name, 841 userquota_perms[zc->zc_objset_type], cr)); 842 } 843 844 static int 845 zfs_secpolicy_userspace_many(zfs_cmd_t *zc, cred_t *cr) 846 { 847 int err = zfs_secpolicy_read(zc, cr); 848 if (err) 849 return (err); 850 851 if (zc->zc_objset_type >= ZFS_NUM_USERQUOTA_PROPS) 852 return (EINVAL); 853 854 return (zfs_secpolicy_write_perms(zc->zc_name, 855 userquota_perms[zc->zc_objset_type], cr)); 856 } 857 858 static int 859 zfs_secpolicy_userspace_upgrade(zfs_cmd_t *zc, cred_t *cr) 860 { 861 return (zfs_secpolicy_setprop(zc->zc_name, ZFS_PROP_VERSION, 862 NULL, cr)); 863 } 864 865 static int 866 zfs_secpolicy_hold(zfs_cmd_t *zc, cred_t *cr) 867 { 868 return (zfs_secpolicy_write_perms(zc->zc_name, 869 ZFS_DELEG_PERM_HOLD, cr)); 870 } 871 872 static int 873 zfs_secpolicy_release(zfs_cmd_t *zc, cred_t *cr) 874 { 875 return (zfs_secpolicy_write_perms(zc->zc_name, 876 ZFS_DELEG_PERM_RELEASE, cr)); 877 } 878 879 /* 880 * Returns the nvlist as specified by the user in the zfs_cmd_t. 881 */ 882 static int 883 get_nvlist(uint64_t nvl, uint64_t size, int iflag, nvlist_t **nvp) 884 { 885 char *packed; 886 int error; 887 nvlist_t *list = NULL; 888 889 /* 890 * Read in and unpack the user-supplied nvlist. 891 */ 892 if (size == 0) 893 return (EINVAL); 894 895 packed = kmem_alloc(size, KM_SLEEP); 896 897 if ((error = ddi_copyin((void *)(uintptr_t)nvl, packed, size, 898 iflag)) != 0) { 899 kmem_free(packed, size); 900 return (error); 901 } 902 903 if ((error = nvlist_unpack(packed, size, &list, 0)) != 0) { 904 kmem_free(packed, size); 905 return (error); 906 } 907 908 kmem_free(packed, size); 909 910 *nvp = list; 911 return (0); 912 } 913 914 static int 915 fit_error_list(zfs_cmd_t *zc, nvlist_t **errors) 916 { 917 size_t size; 918 919 VERIFY(nvlist_size(*errors, &size, NV_ENCODE_NATIVE) == 0); 920 921 if (size > zc->zc_nvlist_dst_size) { 922 nvpair_t *more_errors; 923 int n = 0; 924 925 if (zc->zc_nvlist_dst_size < 1024) 926 return (ENOMEM); 927 928 VERIFY(nvlist_add_int32(*errors, ZPROP_N_MORE_ERRORS, 0) == 0); 929 more_errors = nvlist_prev_nvpair(*errors, NULL); 930 931 do { 932 nvpair_t *pair = nvlist_prev_nvpair(*errors, 933 more_errors); 934 VERIFY(nvlist_remove_nvpair(*errors, pair) == 0); 935 n++; 936 VERIFY(nvlist_size(*errors, &size, 937 NV_ENCODE_NATIVE) == 0); 938 } while (size > zc->zc_nvlist_dst_size); 939 940 VERIFY(nvlist_remove_nvpair(*errors, more_errors) == 0); 941 VERIFY(nvlist_add_int32(*errors, ZPROP_N_MORE_ERRORS, n) == 0); 942 ASSERT(nvlist_size(*errors, &size, NV_ENCODE_NATIVE) == 0); 943 ASSERT(size <= zc->zc_nvlist_dst_size); 944 } 945 946 return (0); 947 } 948 949 static int 950 put_nvlist(zfs_cmd_t *zc, nvlist_t *nvl) 951 { 952 char *packed = NULL; 953 int error = 0; 954 size_t size; 955 956 VERIFY(nvlist_size(nvl, &size, NV_ENCODE_NATIVE) == 0); 957 958 if (size > zc->zc_nvlist_dst_size) { 959 error = ENOMEM; 960 } else { 961 packed = kmem_alloc(size, KM_SLEEP); 962 VERIFY(nvlist_pack(nvl, &packed, &size, NV_ENCODE_NATIVE, 963 KM_SLEEP) == 0); 964 if (ddi_copyout(packed, (void *)(uintptr_t)zc->zc_nvlist_dst, 965 size, zc->zc_iflags) != 0) 966 error = EFAULT; 967 kmem_free(packed, size); 968 } 969 970 zc->zc_nvlist_dst_size = size; 971 return (error); 972 } 973 974 static int 975 getzfsvfs(const char *dsname, zfsvfs_t **zfvp) 976 { 977 objset_t *os; 978 int error; 979 980 error = dmu_objset_hold(dsname, FTAG, &os); 981 if (error) 982 return (error); 983 if (dmu_objset_type(os) != DMU_OST_ZFS) { 984 dmu_objset_rele(os, FTAG); 985 return (EINVAL); 986 } 987 988 mutex_enter(&os->os_user_ptr_lock); 989 *zfvp = dmu_objset_get_user(os); 990 if (*zfvp) { 991 VFS_HOLD((*zfvp)->z_vfs); 992 } else { 993 error = ESRCH; 994 } 995 mutex_exit(&os->os_user_ptr_lock); 996 dmu_objset_rele(os, FTAG); 997 return (error); 998 } 999 1000 /* 1001 * Find a zfsvfs_t for a mounted filesystem, or create our own, in which 1002 * case its z_vfs will be NULL, and it will be opened as the owner. 1003 */ 1004 static int 1005 zfsvfs_hold(const char *name, void *tag, zfsvfs_t **zfvp, boolean_t writer) 1006 { 1007 int error = 0; 1008 1009 if (getzfsvfs(name, zfvp) != 0) 1010 error = zfsvfs_create(name, zfvp); 1011 if (error == 0) { 1012 rrw_enter(&(*zfvp)->z_teardown_lock, (writer) ? RW_WRITER : 1013 RW_READER, tag); 1014 if ((*zfvp)->z_unmounted) { 1015 /* 1016 * XXX we could probably try again, since the unmounting 1017 * thread should be just about to disassociate the 1018 * objset from the zfsvfs. 1019 */ 1020 rrw_exit(&(*zfvp)->z_teardown_lock, tag); 1021 return (EBUSY); 1022 } 1023 } 1024 return (error); 1025 } 1026 1027 static void 1028 zfsvfs_rele(zfsvfs_t *zfsvfs, void *tag) 1029 { 1030 rrw_exit(&zfsvfs->z_teardown_lock, tag); 1031 1032 if (zfsvfs->z_vfs) { 1033 VFS_RELE(zfsvfs->z_vfs); 1034 } else { 1035 dmu_objset_disown(zfsvfs->z_os, zfsvfs); 1036 zfsvfs_free(zfsvfs); 1037 } 1038 } 1039 1040 static int 1041 zfs_ioc_pool_create(zfs_cmd_t *zc) 1042 { 1043 int error; 1044 nvlist_t *config, *props = NULL; 1045 nvlist_t *rootprops = NULL; 1046 nvlist_t *zplprops = NULL; 1047 char *buf; 1048 1049 if (error = get_nvlist(zc->zc_nvlist_conf, zc->zc_nvlist_conf_size, 1050 zc->zc_iflags, &config)) 1051 return (error); 1052 1053 if (zc->zc_nvlist_src_size != 0 && (error = 1054 get_nvlist(zc->zc_nvlist_src, zc->zc_nvlist_src_size, 1055 zc->zc_iflags, &props))) { 1056 nvlist_free(config); 1057 return (error); 1058 } 1059 1060 if (props) { 1061 nvlist_t *nvl = NULL; 1062 uint64_t version = SPA_VERSION; 1063 1064 (void) nvlist_lookup_uint64(props, 1065 zpool_prop_to_name(ZPOOL_PROP_VERSION), &version); 1066 if (version < SPA_VERSION_INITIAL || version > SPA_VERSION) { 1067 error = EINVAL; 1068 goto pool_props_bad; 1069 } 1070 (void) nvlist_lookup_nvlist(props, ZPOOL_ROOTFS_PROPS, &nvl); 1071 if (nvl) { 1072 error = nvlist_dup(nvl, &rootprops, KM_SLEEP); 1073 if (error != 0) { 1074 nvlist_free(config); 1075 nvlist_free(props); 1076 return (error); 1077 } 1078 (void) nvlist_remove_all(props, ZPOOL_ROOTFS_PROPS); 1079 } 1080 VERIFY(nvlist_alloc(&zplprops, NV_UNIQUE_NAME, KM_SLEEP) == 0); 1081 error = zfs_fill_zplprops_root(version, rootprops, 1082 zplprops, NULL); 1083 if (error) 1084 goto pool_props_bad; 1085 } 1086 1087 buf = history_str_get(zc); 1088 1089 error = spa_create(zc->zc_name, config, props, buf, zplprops); 1090 1091 /* 1092 * Set the remaining root properties 1093 */ 1094 if (!error && (error = zfs_set_prop_nvlist(zc->zc_name, 1095 ZPROP_SRC_LOCAL, rootprops, NULL)) != 0) 1096 (void) spa_destroy(zc->zc_name); 1097 1098 if (buf != NULL) 1099 history_str_free(buf); 1100 1101 pool_props_bad: 1102 nvlist_free(rootprops); 1103 nvlist_free(zplprops); 1104 nvlist_free(config); 1105 nvlist_free(props); 1106 1107 return (error); 1108 } 1109 1110 static int 1111 zfs_ioc_pool_destroy(zfs_cmd_t *zc) 1112 { 1113 int error; 1114 zfs_log_history(zc); 1115 error = spa_destroy(zc->zc_name); 1116 if (error == 0) 1117 zvol_remove_minors(zc->zc_name); 1118 return (error); 1119 } 1120 1121 static int 1122 zfs_ioc_pool_import(zfs_cmd_t *zc) 1123 { 1124 nvlist_t *config, *props = NULL; 1125 uint64_t guid; 1126 int error; 1127 1128 if ((error = get_nvlist(zc->zc_nvlist_conf, zc->zc_nvlist_conf_size, 1129 zc->zc_iflags, &config)) != 0) 1130 return (error); 1131 1132 if (zc->zc_nvlist_src_size != 0 && (error = 1133 get_nvlist(zc->zc_nvlist_src, zc->zc_nvlist_src_size, 1134 zc->zc_iflags, &props))) { 1135 nvlist_free(config); 1136 return (error); 1137 } 1138 1139 if (nvlist_lookup_uint64(config, ZPOOL_CONFIG_POOL_GUID, &guid) != 0 || 1140 guid != zc->zc_guid) 1141 error = EINVAL; 1142 else if (zc->zc_cookie) 1143 error = spa_import_verbatim(zc->zc_name, config, props); 1144 else 1145 error = spa_import(zc->zc_name, config, props); 1146 1147 if (zc->zc_nvlist_dst != 0) 1148 (void) put_nvlist(zc, config); 1149 1150 nvlist_free(config); 1151 1152 if (props) 1153 nvlist_free(props); 1154 1155 return (error); 1156 } 1157 1158 static int 1159 zfs_ioc_pool_export(zfs_cmd_t *zc) 1160 { 1161 int error; 1162 boolean_t force = (boolean_t)zc->zc_cookie; 1163 boolean_t hardforce = (boolean_t)zc->zc_guid; 1164 1165 zfs_log_history(zc); 1166 error = spa_export(zc->zc_name, NULL, force, hardforce); 1167 if (error == 0) 1168 zvol_remove_minors(zc->zc_name); 1169 return (error); 1170 } 1171 1172 static int 1173 zfs_ioc_pool_configs(zfs_cmd_t *zc) 1174 { 1175 nvlist_t *configs; 1176 int error; 1177 1178 if ((configs = spa_all_configs(&zc->zc_cookie)) == NULL) 1179 return (EEXIST); 1180 1181 error = put_nvlist(zc, configs); 1182 1183 nvlist_free(configs); 1184 1185 return (error); 1186 } 1187 1188 static int 1189 zfs_ioc_pool_stats(zfs_cmd_t *zc) 1190 { 1191 nvlist_t *config; 1192 int error; 1193 int ret = 0; 1194 1195 error = spa_get_stats(zc->zc_name, &config, zc->zc_value, 1196 sizeof (zc->zc_value)); 1197 1198 if (config != NULL) { 1199 ret = put_nvlist(zc, config); 1200 nvlist_free(config); 1201 1202 /* 1203 * The config may be present even if 'error' is non-zero. 1204 * In this case we return success, and preserve the real errno 1205 * in 'zc_cookie'. 1206 */ 1207 zc->zc_cookie = error; 1208 } else { 1209 ret = error; 1210 } 1211 1212 return (ret); 1213 } 1214 1215 /* 1216 * Try to import the given pool, returning pool stats as appropriate so that 1217 * user land knows which devices are available and overall pool health. 1218 */ 1219 static int 1220 zfs_ioc_pool_tryimport(zfs_cmd_t *zc) 1221 { 1222 nvlist_t *tryconfig, *config; 1223 int error; 1224 1225 if ((error = get_nvlist(zc->zc_nvlist_conf, zc->zc_nvlist_conf_size, 1226 zc->zc_iflags, &tryconfig)) != 0) 1227 return (error); 1228 1229 config = spa_tryimport(tryconfig); 1230 1231 nvlist_free(tryconfig); 1232 1233 if (config == NULL) 1234 return (EINVAL); 1235 1236 error = put_nvlist(zc, config); 1237 nvlist_free(config); 1238 1239 return (error); 1240 } 1241 1242 /* 1243 * inputs: 1244 * zc_name name of the pool 1245 * zc_cookie scan func (pool_scan_func_t) 1246 */ 1247 static int 1248 zfs_ioc_pool_scan(zfs_cmd_t *zc) 1249 { 1250 spa_t *spa; 1251 int error; 1252 1253 if ((error = spa_open(zc->zc_name, &spa, FTAG)) != 0) 1254 return (error); 1255 1256 if (zc->zc_cookie == POOL_SCAN_NONE) 1257 error = spa_scan_stop(spa); 1258 else 1259 error = spa_scan(spa, zc->zc_cookie); 1260 1261 spa_close(spa, FTAG); 1262 1263 return (error); 1264 } 1265 1266 static int 1267 zfs_ioc_pool_freeze(zfs_cmd_t *zc) 1268 { 1269 spa_t *spa; 1270 int error; 1271 1272 error = spa_open(zc->zc_name, &spa, FTAG); 1273 if (error == 0) { 1274 spa_freeze(spa); 1275 spa_close(spa, FTAG); 1276 } 1277 return (error); 1278 } 1279 1280 static int 1281 zfs_ioc_pool_upgrade(zfs_cmd_t *zc) 1282 { 1283 spa_t *spa; 1284 int error; 1285 1286 if ((error = spa_open(zc->zc_name, &spa, FTAG)) != 0) 1287 return (error); 1288 1289 if (zc->zc_cookie < spa_version(spa) || zc->zc_cookie > SPA_VERSION) { 1290 spa_close(spa, FTAG); 1291 return (EINVAL); 1292 } 1293 1294 spa_upgrade(spa, zc->zc_cookie); 1295 spa_close(spa, FTAG); 1296 1297 return (error); 1298 } 1299 1300 static int 1301 zfs_ioc_pool_get_history(zfs_cmd_t *zc) 1302 { 1303 spa_t *spa; 1304 char *hist_buf; 1305 uint64_t size; 1306 int error; 1307 1308 if ((size = zc->zc_history_len) == 0) 1309 return (EINVAL); 1310 1311 if ((error = spa_open(zc->zc_name, &spa, FTAG)) != 0) 1312 return (error); 1313 1314 if (spa_version(spa) < SPA_VERSION_ZPOOL_HISTORY) { 1315 spa_close(spa, FTAG); 1316 return (ENOTSUP); 1317 } 1318 1319 hist_buf = kmem_alloc(size, KM_SLEEP); 1320 if ((error = spa_history_get(spa, &zc->zc_history_offset, 1321 &zc->zc_history_len, hist_buf)) == 0) { 1322 error = ddi_copyout(hist_buf, 1323 (void *)(uintptr_t)zc->zc_history, 1324 zc->zc_history_len, zc->zc_iflags); 1325 } 1326 1327 spa_close(spa, FTAG); 1328 kmem_free(hist_buf, size); 1329 return (error); 1330 } 1331 1332 static int 1333 zfs_ioc_dsobj_to_dsname(zfs_cmd_t *zc) 1334 { 1335 int error; 1336 1337 if (error = dsl_dsobj_to_dsname(zc->zc_name, zc->zc_obj, zc->zc_value)) 1338 return (error); 1339 1340 return (0); 1341 } 1342 1343 /* 1344 * inputs: 1345 * zc_name name of filesystem 1346 * zc_obj object to find 1347 * 1348 * outputs: 1349 * zc_value name of object 1350 */ 1351 static int 1352 zfs_ioc_obj_to_path(zfs_cmd_t *zc) 1353 { 1354 objset_t *os; 1355 int error; 1356 1357 /* XXX reading from objset not owned */ 1358 if ((error = dmu_objset_hold(zc->zc_name, FTAG, &os)) != 0) 1359 return (error); 1360 if (dmu_objset_type(os) != DMU_OST_ZFS) { 1361 dmu_objset_rele(os, FTAG); 1362 return (EINVAL); 1363 } 1364 error = zfs_obj_to_path(os, zc->zc_obj, zc->zc_value, 1365 sizeof (zc->zc_value)); 1366 dmu_objset_rele(os, FTAG); 1367 1368 return (error); 1369 } 1370 1371 static int 1372 zfs_ioc_vdev_add(zfs_cmd_t *zc) 1373 { 1374 spa_t *spa; 1375 int error; 1376 nvlist_t *config, **l2cache, **spares; 1377 uint_t nl2cache = 0, nspares = 0; 1378 1379 error = spa_open(zc->zc_name, &spa, FTAG); 1380 if (error != 0) 1381 return (error); 1382 1383 error = get_nvlist(zc->zc_nvlist_conf, zc->zc_nvlist_conf_size, 1384 zc->zc_iflags, &config); 1385 (void) nvlist_lookup_nvlist_array(config, ZPOOL_CONFIG_L2CACHE, 1386 &l2cache, &nl2cache); 1387 1388 (void) nvlist_lookup_nvlist_array(config, ZPOOL_CONFIG_SPARES, 1389 &spares, &nspares); 1390 1391 /* 1392 * A root pool with concatenated devices is not supported. 1393 * Thus, can not add a device to a root pool. 1394 * 1395 * Intent log device can not be added to a rootpool because 1396 * during mountroot, zil is replayed, a seperated log device 1397 * can not be accessed during the mountroot time. 1398 * 1399 * l2cache and spare devices are ok to be added to a rootpool. 1400 */ 1401 if (spa_bootfs(spa) != 0 && nl2cache == 0 && nspares == 0) { 1402 nvlist_free(config); 1403 spa_close(spa, FTAG); 1404 return (EDOM); 1405 } 1406 1407 if (error == 0) { 1408 error = spa_vdev_add(spa, config); 1409 nvlist_free(config); 1410 } 1411 spa_close(spa, FTAG); 1412 return (error); 1413 } 1414 1415 /* 1416 * inputs: 1417 * zc_name name of the pool 1418 * zc_nvlist_conf nvlist of devices to remove 1419 * zc_cookie to stop the remove? 1420 */ 1421 static int 1422 zfs_ioc_vdev_remove(zfs_cmd_t *zc) 1423 { 1424 spa_t *spa; 1425 int error; 1426 1427 error = spa_open(zc->zc_name, &spa, FTAG); 1428 if (error != 0) 1429 return (error); 1430 error = spa_vdev_remove(spa, zc->zc_guid, B_FALSE); 1431 spa_close(spa, FTAG); 1432 return (error); 1433 } 1434 1435 static int 1436 zfs_ioc_vdev_set_state(zfs_cmd_t *zc) 1437 { 1438 spa_t *spa; 1439 int error; 1440 vdev_state_t newstate = VDEV_STATE_UNKNOWN; 1441 1442 if ((error = spa_open(zc->zc_name, &spa, FTAG)) != 0) 1443 return (error); 1444 switch (zc->zc_cookie) { 1445 case VDEV_STATE_ONLINE: 1446 error = vdev_online(spa, zc->zc_guid, zc->zc_obj, &newstate); 1447 break; 1448 1449 case VDEV_STATE_OFFLINE: 1450 error = vdev_offline(spa, zc->zc_guid, zc->zc_obj); 1451 break; 1452 1453 case VDEV_STATE_FAULTED: 1454 if (zc->zc_obj != VDEV_AUX_ERR_EXCEEDED && 1455 zc->zc_obj != VDEV_AUX_EXTERNAL) 1456 zc->zc_obj = VDEV_AUX_ERR_EXCEEDED; 1457 1458 error = vdev_fault(spa, zc->zc_guid, zc->zc_obj); 1459 break; 1460 1461 case VDEV_STATE_DEGRADED: 1462 if (zc->zc_obj != VDEV_AUX_ERR_EXCEEDED && 1463 zc->zc_obj != VDEV_AUX_EXTERNAL) 1464 zc->zc_obj = VDEV_AUX_ERR_EXCEEDED; 1465 1466 error = vdev_degrade(spa, zc->zc_guid, zc->zc_obj); 1467 break; 1468 1469 default: 1470 error = EINVAL; 1471 } 1472 zc->zc_cookie = newstate; 1473 spa_close(spa, FTAG); 1474 return (error); 1475 } 1476 1477 static int 1478 zfs_ioc_vdev_attach(zfs_cmd_t *zc) 1479 { 1480 spa_t *spa; 1481 int replacing = zc->zc_cookie; 1482 nvlist_t *config; 1483 int error; 1484 1485 if ((error = spa_open(zc->zc_name, &spa, FTAG)) != 0) 1486 return (error); 1487 1488 if ((error = get_nvlist(zc->zc_nvlist_conf, zc->zc_nvlist_conf_size, 1489 zc->zc_iflags, &config)) == 0) { 1490 error = spa_vdev_attach(spa, zc->zc_guid, config, replacing); 1491 nvlist_free(config); 1492 } 1493 1494 spa_close(spa, FTAG); 1495 return (error); 1496 } 1497 1498 static int 1499 zfs_ioc_vdev_detach(zfs_cmd_t *zc) 1500 { 1501 spa_t *spa; 1502 int error; 1503 1504 if ((error = spa_open(zc->zc_name, &spa, FTAG)) != 0) 1505 return (error); 1506 1507 error = spa_vdev_detach(spa, zc->zc_guid, 0, B_FALSE); 1508 1509 spa_close(spa, FTAG); 1510 return (error); 1511 } 1512 1513 static int 1514 zfs_ioc_vdev_split(zfs_cmd_t *zc) 1515 { 1516 spa_t *spa; 1517 nvlist_t *config, *props = NULL; 1518 int error; 1519 boolean_t exp = !!(zc->zc_cookie & ZPOOL_EXPORT_AFTER_SPLIT); 1520 1521 if ((error = spa_open(zc->zc_name, &spa, FTAG)) != 0) 1522 return (error); 1523 1524 if (error = get_nvlist(zc->zc_nvlist_conf, zc->zc_nvlist_conf_size, 1525 zc->zc_iflags, &config)) { 1526 spa_close(spa, FTAG); 1527 return (error); 1528 } 1529 1530 if (zc->zc_nvlist_src_size != 0 && (error = 1531 get_nvlist(zc->zc_nvlist_src, zc->zc_nvlist_src_size, 1532 zc->zc_iflags, &props))) { 1533 spa_close(spa, FTAG); 1534 nvlist_free(config); 1535 return (error); 1536 } 1537 1538 error = spa_vdev_split_mirror(spa, zc->zc_string, config, props, exp); 1539 1540 spa_close(spa, FTAG); 1541 1542 nvlist_free(config); 1543 nvlist_free(props); 1544 1545 return (error); 1546 } 1547 1548 static int 1549 zfs_ioc_vdev_setpath(zfs_cmd_t *zc) 1550 { 1551 spa_t *spa; 1552 char *path = zc->zc_value; 1553 uint64_t guid = zc->zc_guid; 1554 int error; 1555 1556 error = spa_open(zc->zc_name, &spa, FTAG); 1557 if (error != 0) 1558 return (error); 1559 1560 error = spa_vdev_setpath(spa, guid, path); 1561 spa_close(spa, FTAG); 1562 return (error); 1563 } 1564 1565 static int 1566 zfs_ioc_vdev_setfru(zfs_cmd_t *zc) 1567 { 1568 spa_t *spa; 1569 char *fru = zc->zc_value; 1570 uint64_t guid = zc->zc_guid; 1571 int error; 1572 1573 error = spa_open(zc->zc_name, &spa, FTAG); 1574 if (error != 0) 1575 return (error); 1576 1577 error = spa_vdev_setfru(spa, guid, fru); 1578 spa_close(spa, FTAG); 1579 return (error); 1580 } 1581 1582 /* 1583 * inputs: 1584 * zc_name name of filesystem 1585 * zc_nvlist_dst_size size of buffer for property nvlist 1586 * 1587 * outputs: 1588 * zc_objset_stats stats 1589 * zc_nvlist_dst property nvlist 1590 * zc_nvlist_dst_size size of property nvlist 1591 */ 1592 static int 1593 zfs_ioc_objset_stats(zfs_cmd_t *zc) 1594 { 1595 objset_t *os = NULL; 1596 int error; 1597 nvlist_t *nv; 1598 1599 if (error = dmu_objset_hold(zc->zc_name, FTAG, &os)) 1600 return (error); 1601 1602 dmu_objset_fast_stat(os, &zc->zc_objset_stats); 1603 1604 if (zc->zc_nvlist_dst != 0 && 1605 (error = dsl_prop_get_all(os, &nv)) == 0) { 1606 dmu_objset_stats(os, nv); 1607 /* 1608 * NB: zvol_get_stats() will read the objset contents, 1609 * which we aren't supposed to do with a 1610 * DS_MODE_USER hold, because it could be 1611 * inconsistent. So this is a bit of a workaround... 1612 * XXX reading with out owning 1613 */ 1614 if (!zc->zc_objset_stats.dds_inconsistent) { 1615 if (dmu_objset_type(os) == DMU_OST_ZVOL) 1616 VERIFY(zvol_get_stats(os, nv) == 0); 1617 } 1618 error = put_nvlist(zc, nv); 1619 nvlist_free(nv); 1620 } 1621 1622 dmu_objset_rele(os, FTAG); 1623 return (error); 1624 } 1625 1626 /* 1627 * inputs: 1628 * zc_name name of filesystem 1629 * zc_nvlist_dst_size size of buffer for property nvlist 1630 * 1631 * outputs: 1632 * zc_nvlist_dst received property nvlist 1633 * zc_nvlist_dst_size size of received property nvlist 1634 * 1635 * Gets received properties (distinct from local properties on or after 1636 * SPA_VERSION_RECVD_PROPS) for callers who want to differentiate received from 1637 * local property values. 1638 */ 1639 static int 1640 zfs_ioc_objset_recvd_props(zfs_cmd_t *zc) 1641 { 1642 objset_t *os = NULL; 1643 int error; 1644 nvlist_t *nv; 1645 1646 if (error = dmu_objset_hold(zc->zc_name, FTAG, &os)) 1647 return (error); 1648 1649 /* 1650 * Without this check, we would return local property values if the 1651 * caller has not already received properties on or after 1652 * SPA_VERSION_RECVD_PROPS. 1653 */ 1654 if (!dsl_prop_get_hasrecvd(os)) { 1655 dmu_objset_rele(os, FTAG); 1656 return (ENOTSUP); 1657 } 1658 1659 if (zc->zc_nvlist_dst != 0 && 1660 (error = dsl_prop_get_received(os, &nv)) == 0) { 1661 error = put_nvlist(zc, nv); 1662 nvlist_free(nv); 1663 } 1664 1665 dmu_objset_rele(os, FTAG); 1666 return (error); 1667 } 1668 1669 static int 1670 nvl_add_zplprop(objset_t *os, nvlist_t *props, zfs_prop_t prop) 1671 { 1672 uint64_t value; 1673 int error; 1674 1675 /* 1676 * zfs_get_zplprop() will either find a value or give us 1677 * the default value (if there is one). 1678 */ 1679 if ((error = zfs_get_zplprop(os, prop, &value)) != 0) 1680 return (error); 1681 VERIFY(nvlist_add_uint64(props, zfs_prop_to_name(prop), value) == 0); 1682 return (0); 1683 } 1684 1685 /* 1686 * inputs: 1687 * zc_name name of filesystem 1688 * zc_nvlist_dst_size size of buffer for zpl property nvlist 1689 * 1690 * outputs: 1691 * zc_nvlist_dst zpl property nvlist 1692 * zc_nvlist_dst_size size of zpl property nvlist 1693 */ 1694 static int 1695 zfs_ioc_objset_zplprops(zfs_cmd_t *zc) 1696 { 1697 objset_t *os; 1698 int err; 1699 1700 /* XXX reading without owning */ 1701 if (err = dmu_objset_hold(zc->zc_name, FTAG, &os)) 1702 return (err); 1703 1704 dmu_objset_fast_stat(os, &zc->zc_objset_stats); 1705 1706 /* 1707 * NB: nvl_add_zplprop() will read the objset contents, 1708 * which we aren't supposed to do with a DS_MODE_USER 1709 * hold, because it could be inconsistent. 1710 */ 1711 if (zc->zc_nvlist_dst != NULL && 1712 !zc->zc_objset_stats.dds_inconsistent && 1713 dmu_objset_type(os) == DMU_OST_ZFS) { 1714 nvlist_t *nv; 1715 1716 VERIFY(nvlist_alloc(&nv, NV_UNIQUE_NAME, KM_SLEEP) == 0); 1717 if ((err = nvl_add_zplprop(os, nv, ZFS_PROP_VERSION)) == 0 && 1718 (err = nvl_add_zplprop(os, nv, ZFS_PROP_NORMALIZE)) == 0 && 1719 (err = nvl_add_zplprop(os, nv, ZFS_PROP_UTF8ONLY)) == 0 && 1720 (err = nvl_add_zplprop(os, nv, ZFS_PROP_CASE)) == 0) 1721 err = put_nvlist(zc, nv); 1722 nvlist_free(nv); 1723 } else { 1724 err = ENOENT; 1725 } 1726 dmu_objset_rele(os, FTAG); 1727 return (err); 1728 } 1729 1730 static boolean_t 1731 dataset_name_hidden(const char *name) 1732 { 1733 /* 1734 * Skip over datasets that are not visible in this zone, 1735 * internal datasets (which have a $ in their name), and 1736 * temporary datasets (which have a % in their name). 1737 */ 1738 if (strchr(name, '$') != NULL) 1739 return (B_TRUE); 1740 if (strchr(name, '%') != NULL) 1741 return (B_TRUE); 1742 if (!INGLOBALZONE(curproc) && !zone_dataset_visible(name, NULL)) 1743 return (B_TRUE); 1744 return (B_FALSE); 1745 } 1746 1747 /* 1748 * inputs: 1749 * zc_name name of filesystem 1750 * zc_cookie zap cursor 1751 * zc_nvlist_dst_size size of buffer for property nvlist 1752 * 1753 * outputs: 1754 * zc_name name of next filesystem 1755 * zc_cookie zap cursor 1756 * zc_objset_stats stats 1757 * zc_nvlist_dst property nvlist 1758 * zc_nvlist_dst_size size of property nvlist 1759 */ 1760 static int 1761 zfs_ioc_dataset_list_next(zfs_cmd_t *zc) 1762 { 1763 objset_t *os; 1764 int error; 1765 char *p; 1766 size_t orig_len = strlen(zc->zc_name); 1767 1768 top: 1769 if (error = dmu_objset_hold(zc->zc_name, FTAG, &os)) { 1770 if (error == ENOENT) 1771 error = ESRCH; 1772 return (error); 1773 } 1774 1775 p = strrchr(zc->zc_name, '/'); 1776 if (p == NULL || p[1] != '\0') 1777 (void) strlcat(zc->zc_name, "/", sizeof (zc->zc_name)); 1778 p = zc->zc_name + strlen(zc->zc_name); 1779 1780 /* 1781 * Pre-fetch the datasets. dmu_objset_prefetch() always returns 0 1782 * but is not declared void because its called by dmu_objset_find(). 1783 */ 1784 if (zc->zc_cookie == 0) { 1785 uint64_t cookie = 0; 1786 int len = sizeof (zc->zc_name) - (p - zc->zc_name); 1787 1788 while (dmu_dir_list_next(os, len, p, NULL, &cookie) == 0) 1789 (void) dmu_objset_prefetch(p, NULL); 1790 } 1791 1792 do { 1793 error = dmu_dir_list_next(os, 1794 sizeof (zc->zc_name) - (p - zc->zc_name), p, 1795 NULL, &zc->zc_cookie); 1796 if (error == ENOENT) 1797 error = ESRCH; 1798 } while (error == 0 && dataset_name_hidden(zc->zc_name) && 1799 !(zc->zc_iflags & FKIOCTL)); 1800 dmu_objset_rele(os, FTAG); 1801 1802 /* 1803 * If it's an internal dataset (ie. with a '$' in its name), 1804 * don't try to get stats for it, otherwise we'll return ENOENT. 1805 */ 1806 if (error == 0 && strchr(zc->zc_name, '$') == NULL) { 1807 error = zfs_ioc_objset_stats(zc); /* fill in the stats */ 1808 if (error == ENOENT) { 1809 /* We lost a race with destroy, get the next one. */ 1810 zc->zc_name[orig_len] = '\0'; 1811 goto top; 1812 } 1813 } 1814 return (error); 1815 } 1816 1817 /* 1818 * inputs: 1819 * zc_name name of filesystem 1820 * zc_cookie zap cursor 1821 * zc_nvlist_dst_size size of buffer for property nvlist 1822 * 1823 * outputs: 1824 * zc_name name of next snapshot 1825 * zc_objset_stats stats 1826 * zc_nvlist_dst property nvlist 1827 * zc_nvlist_dst_size size of property nvlist 1828 */ 1829 static int 1830 zfs_ioc_snapshot_list_next(zfs_cmd_t *zc) 1831 { 1832 objset_t *os; 1833 int error; 1834 1835 top: 1836 if (zc->zc_cookie == 0) 1837 (void) dmu_objset_find(zc->zc_name, dmu_objset_prefetch, 1838 NULL, DS_FIND_SNAPSHOTS); 1839 1840 error = dmu_objset_hold(zc->zc_name, FTAG, &os); 1841 if (error) 1842 return (error == ENOENT ? ESRCH : error); 1843 1844 /* 1845 * A dataset name of maximum length cannot have any snapshots, 1846 * so exit immediately. 1847 */ 1848 if (strlcat(zc->zc_name, "@", sizeof (zc->zc_name)) >= MAXNAMELEN) { 1849 dmu_objset_rele(os, FTAG); 1850 return (ESRCH); 1851 } 1852 1853 error = dmu_snapshot_list_next(os, 1854 sizeof (zc->zc_name) - strlen(zc->zc_name), 1855 zc->zc_name + strlen(zc->zc_name), NULL, &zc->zc_cookie, NULL); 1856 dmu_objset_rele(os, FTAG); 1857 if (error == 0) { 1858 error = zfs_ioc_objset_stats(zc); /* fill in the stats */ 1859 if (error == ENOENT) { 1860 /* We lost a race with destroy, get the next one. */ 1861 *strchr(zc->zc_name, '@') = '\0'; 1862 goto top; 1863 } 1864 } else if (error == ENOENT) { 1865 error = ESRCH; 1866 } 1867 1868 /* if we failed, undo the @ that we tacked on to zc_name */ 1869 if (error) 1870 *strchr(zc->zc_name, '@') = '\0'; 1871 return (error); 1872 } 1873 1874 static int 1875 zfs_prop_set_userquota(const char *dsname, nvpair_t *pair) 1876 { 1877 const char *propname = nvpair_name(pair); 1878 uint64_t *valary; 1879 unsigned int vallen; 1880 const char *domain; 1881 char *dash; 1882 zfs_userquota_prop_t type; 1883 uint64_t rid; 1884 uint64_t quota; 1885 zfsvfs_t *zfsvfs; 1886 int err; 1887 1888 if (nvpair_type(pair) == DATA_TYPE_NVLIST) { 1889 nvlist_t *attrs; 1890 VERIFY(nvpair_value_nvlist(pair, &attrs) == 0); 1891 if (nvlist_lookup_nvpair(attrs, ZPROP_VALUE, 1892 &pair) != 0) 1893 return (EINVAL); 1894 } 1895 1896 /* 1897 * A correctly constructed propname is encoded as 1898 * userquota@<rid>-<domain>. 1899 */ 1900 if ((dash = strchr(propname, '-')) == NULL || 1901 nvpair_value_uint64_array(pair, &valary, &vallen) != 0 || 1902 vallen != 3) 1903 return (EINVAL); 1904 1905 domain = dash + 1; 1906 type = valary[0]; 1907 rid = valary[1]; 1908 quota = valary[2]; 1909 1910 err = zfsvfs_hold(dsname, FTAG, &zfsvfs, B_FALSE); 1911 if (err == 0) { 1912 err = zfs_set_userquota(zfsvfs, type, domain, rid, quota); 1913 zfsvfs_rele(zfsvfs, FTAG); 1914 } 1915 1916 return (err); 1917 } 1918 1919 /* 1920 * If the named property is one that has a special function to set its value, 1921 * return 0 on success and a positive error code on failure; otherwise if it is 1922 * not one of the special properties handled by this function, return -1. 1923 * 1924 * XXX: It would be better for callers of the property interface if we handled 1925 * these special cases in dsl_prop.c (in the dsl layer). 1926 */ 1927 static int 1928 zfs_prop_set_special(const char *dsname, zprop_source_t source, 1929 nvpair_t *pair) 1930 { 1931 const char *propname = nvpair_name(pair); 1932 zfs_prop_t prop = zfs_name_to_prop(propname); 1933 uint64_t intval; 1934 int err; 1935 1936 if (prop == ZPROP_INVAL) { 1937 if (zfs_prop_userquota(propname)) 1938 return (zfs_prop_set_userquota(dsname, pair)); 1939 return (-1); 1940 } 1941 1942 if (nvpair_type(pair) == DATA_TYPE_NVLIST) { 1943 nvlist_t *attrs; 1944 VERIFY(nvpair_value_nvlist(pair, &attrs) == 0); 1945 VERIFY(nvlist_lookup_nvpair(attrs, ZPROP_VALUE, 1946 &pair) == 0); 1947 } 1948 1949 if (zfs_prop_get_type(prop) == PROP_TYPE_STRING) 1950 return (-1); 1951 1952 VERIFY(0 == nvpair_value_uint64(pair, &intval)); 1953 1954 switch (prop) { 1955 case ZFS_PROP_QUOTA: 1956 err = dsl_dir_set_quota(dsname, source, intval); 1957 break; 1958 case ZFS_PROP_REFQUOTA: 1959 err = dsl_dataset_set_quota(dsname, source, intval); 1960 break; 1961 case ZFS_PROP_RESERVATION: 1962 err = dsl_dir_set_reservation(dsname, source, intval); 1963 break; 1964 case ZFS_PROP_REFRESERVATION: 1965 err = dsl_dataset_set_reservation(dsname, source, intval); 1966 break; 1967 case ZFS_PROP_VOLSIZE: 1968 err = zvol_set_volsize(dsname, ddi_driver_major(zfs_dip), 1969 intval); 1970 break; 1971 case ZFS_PROP_VERSION: 1972 { 1973 zfsvfs_t *zfsvfs; 1974 1975 if ((err = zfsvfs_hold(dsname, FTAG, &zfsvfs, B_TRUE)) != 0) 1976 break; 1977 1978 err = zfs_set_version(zfsvfs, intval); 1979 zfsvfs_rele(zfsvfs, FTAG); 1980 1981 if (err == 0 && intval >= ZPL_VERSION_USERSPACE) { 1982 zfs_cmd_t *zc; 1983 1984 zc = kmem_zalloc(sizeof (zfs_cmd_t), KM_SLEEP); 1985 (void) strcpy(zc->zc_name, dsname); 1986 (void) zfs_ioc_userspace_upgrade(zc); 1987 kmem_free(zc, sizeof (zfs_cmd_t)); 1988 } 1989 break; 1990 } 1991 1992 default: 1993 err = -1; 1994 } 1995 1996 return (err); 1997 } 1998 1999 /* 2000 * This function is best effort. If it fails to set any of the given properties, 2001 * it continues to set as many as it can and returns the first error 2002 * encountered. If the caller provides a non-NULL errlist, it also gives the 2003 * complete list of names of all the properties it failed to set along with the 2004 * corresponding error numbers. The caller is responsible for freeing the 2005 * returned errlist. 2006 * 2007 * If every property is set successfully, zero is returned and the list pointed 2008 * at by errlist is NULL. 2009 */ 2010 int 2011 zfs_set_prop_nvlist(const char *dsname, zprop_source_t source, nvlist_t *nvl, 2012 nvlist_t **errlist) 2013 { 2014 nvpair_t *pair; 2015 nvpair_t *propval; 2016 int rv = 0; 2017 uint64_t intval; 2018 char *strval; 2019 nvlist_t *genericnvl; 2020 nvlist_t *errors; 2021 nvlist_t *retrynvl; 2022 2023 VERIFY(nvlist_alloc(&genericnvl, NV_UNIQUE_NAME, KM_SLEEP) == 0); 2024 VERIFY(nvlist_alloc(&errors, NV_UNIQUE_NAME, KM_SLEEP) == 0); 2025 VERIFY(nvlist_alloc(&retrynvl, NV_UNIQUE_NAME, KM_SLEEP) == 0); 2026 2027 retry: 2028 pair = NULL; 2029 while ((pair = nvlist_next_nvpair(nvl, pair)) != NULL) { 2030 const char *propname = nvpair_name(pair); 2031 zfs_prop_t prop = zfs_name_to_prop(propname); 2032 int err = 0; 2033 2034 /* decode the property value */ 2035 propval = pair; 2036 if (nvpair_type(pair) == DATA_TYPE_NVLIST) { 2037 nvlist_t *attrs; 2038 VERIFY(nvpair_value_nvlist(pair, &attrs) == 0); 2039 if (nvlist_lookup_nvpair(attrs, ZPROP_VALUE, 2040 &propval) != 0) 2041 err = EINVAL; 2042 } 2043 2044 /* Validate value type */ 2045 if (err == 0 && prop == ZPROP_INVAL) { 2046 if (zfs_prop_user(propname)) { 2047 if (nvpair_type(propval) != DATA_TYPE_STRING) 2048 err = EINVAL; 2049 } else if (zfs_prop_userquota(propname)) { 2050 if (nvpair_type(propval) != 2051 DATA_TYPE_UINT64_ARRAY) 2052 err = EINVAL; 2053 } 2054 } else if (err == 0) { 2055 if (nvpair_type(propval) == DATA_TYPE_STRING) { 2056 if (zfs_prop_get_type(prop) != PROP_TYPE_STRING) 2057 err = EINVAL; 2058 } else if (nvpair_type(propval) == DATA_TYPE_UINT64) { 2059 const char *unused; 2060 2061 VERIFY(nvpair_value_uint64(propval, 2062 &intval) == 0); 2063 2064 switch (zfs_prop_get_type(prop)) { 2065 case PROP_TYPE_NUMBER: 2066 break; 2067 case PROP_TYPE_STRING: 2068 err = EINVAL; 2069 break; 2070 case PROP_TYPE_INDEX: 2071 if (zfs_prop_index_to_string(prop, 2072 intval, &unused) != 0) 2073 err = EINVAL; 2074 break; 2075 default: 2076 cmn_err(CE_PANIC, 2077 "unknown property type"); 2078 } 2079 } else { 2080 err = EINVAL; 2081 } 2082 } 2083 2084 /* Validate permissions */ 2085 if (err == 0) 2086 err = zfs_check_settable(dsname, pair, CRED()); 2087 2088 if (err == 0) { 2089 err = zfs_prop_set_special(dsname, source, pair); 2090 if (err == -1) { 2091 /* 2092 * For better performance we build up a list of 2093 * properties to set in a single transaction. 2094 */ 2095 err = nvlist_add_nvpair(genericnvl, pair); 2096 } else if (err != 0 && nvl != retrynvl) { 2097 /* 2098 * This may be a spurious error caused by 2099 * receiving quota and reservation out of order. 2100 * Try again in a second pass. 2101 */ 2102 err = nvlist_add_nvpair(retrynvl, pair); 2103 } 2104 } 2105 2106 if (err != 0) 2107 VERIFY(nvlist_add_int32(errors, propname, err) == 0); 2108 } 2109 2110 if (nvl != retrynvl && !nvlist_empty(retrynvl)) { 2111 nvl = retrynvl; 2112 goto retry; 2113 } 2114 2115 if (!nvlist_empty(genericnvl) && 2116 dsl_props_set(dsname, source, genericnvl) != 0) { 2117 /* 2118 * If this fails, we still want to set as many properties as we 2119 * can, so try setting them individually. 2120 */ 2121 pair = NULL; 2122 while ((pair = nvlist_next_nvpair(genericnvl, pair)) != NULL) { 2123 const char *propname = nvpair_name(pair); 2124 int err = 0; 2125 2126 propval = pair; 2127 if (nvpair_type(pair) == DATA_TYPE_NVLIST) { 2128 nvlist_t *attrs; 2129 VERIFY(nvpair_value_nvlist(pair, &attrs) == 0); 2130 VERIFY(nvlist_lookup_nvpair(attrs, ZPROP_VALUE, 2131 &propval) == 0); 2132 } 2133 2134 if (nvpair_type(propval) == DATA_TYPE_STRING) { 2135 VERIFY(nvpair_value_string(propval, 2136 &strval) == 0); 2137 err = dsl_prop_set(dsname, propname, source, 1, 2138 strlen(strval) + 1, strval); 2139 } else { 2140 VERIFY(nvpair_value_uint64(propval, 2141 &intval) == 0); 2142 err = dsl_prop_set(dsname, propname, source, 8, 2143 1, &intval); 2144 } 2145 2146 if (err != 0) { 2147 VERIFY(nvlist_add_int32(errors, propname, 2148 err) == 0); 2149 } 2150 } 2151 } 2152 nvlist_free(genericnvl); 2153 nvlist_free(retrynvl); 2154 2155 if ((pair = nvlist_next_nvpair(errors, NULL)) == NULL) { 2156 nvlist_free(errors); 2157 errors = NULL; 2158 } else { 2159 VERIFY(nvpair_value_int32(pair, &rv) == 0); 2160 } 2161 2162 if (errlist == NULL) 2163 nvlist_free(errors); 2164 else 2165 *errlist = errors; 2166 2167 return (rv); 2168 } 2169 2170 /* 2171 * Check that all the properties are valid user properties. 2172 */ 2173 static int 2174 zfs_check_userprops(char *fsname, nvlist_t *nvl) 2175 { 2176 nvpair_t *pair = NULL; 2177 int error = 0; 2178 2179 while ((pair = nvlist_next_nvpair(nvl, pair)) != NULL) { 2180 const char *propname = nvpair_name(pair); 2181 char *valstr; 2182 2183 if (!zfs_prop_user(propname) || 2184 nvpair_type(pair) != DATA_TYPE_STRING) 2185 return (EINVAL); 2186 2187 if (error = zfs_secpolicy_write_perms(fsname, 2188 ZFS_DELEG_PERM_USERPROP, CRED())) 2189 return (error); 2190 2191 if (strlen(propname) >= ZAP_MAXNAMELEN) 2192 return (ENAMETOOLONG); 2193 2194 VERIFY(nvpair_value_string(pair, &valstr) == 0); 2195 if (strlen(valstr) >= ZAP_MAXVALUELEN) 2196 return (E2BIG); 2197 } 2198 return (0); 2199 } 2200 2201 static void 2202 props_skip(nvlist_t *props, nvlist_t *skipped, nvlist_t **newprops) 2203 { 2204 nvpair_t *pair; 2205 2206 VERIFY(nvlist_alloc(newprops, NV_UNIQUE_NAME, KM_SLEEP) == 0); 2207 2208 pair = NULL; 2209 while ((pair = nvlist_next_nvpair(props, pair)) != NULL) { 2210 if (nvlist_exists(skipped, nvpair_name(pair))) 2211 continue; 2212 2213 VERIFY(nvlist_add_nvpair(*newprops, pair) == 0); 2214 } 2215 } 2216 2217 static int 2218 clear_received_props(objset_t *os, const char *fs, nvlist_t *props, 2219 nvlist_t *skipped) 2220 { 2221 int err = 0; 2222 nvlist_t *cleared_props = NULL; 2223 props_skip(props, skipped, &cleared_props); 2224 if (!nvlist_empty(cleared_props)) { 2225 /* 2226 * Acts on local properties until the dataset has received 2227 * properties at least once on or after SPA_VERSION_RECVD_PROPS. 2228 */ 2229 zprop_source_t flags = (ZPROP_SRC_NONE | 2230 (dsl_prop_get_hasrecvd(os) ? ZPROP_SRC_RECEIVED : 0)); 2231 err = zfs_set_prop_nvlist(fs, flags, cleared_props, NULL); 2232 } 2233 nvlist_free(cleared_props); 2234 return (err); 2235 } 2236 2237 /* 2238 * inputs: 2239 * zc_name name of filesystem 2240 * zc_value name of property to set 2241 * zc_nvlist_src{_size} nvlist of properties to apply 2242 * zc_cookie received properties flag 2243 * 2244 * outputs: 2245 * zc_nvlist_dst{_size} error for each unapplied received property 2246 */ 2247 static int 2248 zfs_ioc_set_prop(zfs_cmd_t *zc) 2249 { 2250 nvlist_t *nvl; 2251 boolean_t received = zc->zc_cookie; 2252 zprop_source_t source = (received ? ZPROP_SRC_RECEIVED : 2253 ZPROP_SRC_LOCAL); 2254 nvlist_t *errors = NULL; 2255 int error; 2256 2257 if ((error = get_nvlist(zc->zc_nvlist_src, zc->zc_nvlist_src_size, 2258 zc->zc_iflags, &nvl)) != 0) 2259 return (error); 2260 2261 if (received) { 2262 nvlist_t *origprops; 2263 objset_t *os; 2264 2265 if (dmu_objset_hold(zc->zc_name, FTAG, &os) == 0) { 2266 if (dsl_prop_get_received(os, &origprops) == 0) { 2267 (void) clear_received_props(os, 2268 zc->zc_name, origprops, nvl); 2269 nvlist_free(origprops); 2270 } 2271 2272 dsl_prop_set_hasrecvd(os); 2273 dmu_objset_rele(os, FTAG); 2274 } 2275 } 2276 2277 error = zfs_set_prop_nvlist(zc->zc_name, source, nvl, &errors); 2278 2279 if (zc->zc_nvlist_dst != NULL && errors != NULL) { 2280 (void) put_nvlist(zc, errors); 2281 } 2282 2283 nvlist_free(errors); 2284 nvlist_free(nvl); 2285 return (error); 2286 } 2287 2288 /* 2289 * inputs: 2290 * zc_name name of filesystem 2291 * zc_value name of property to inherit 2292 * zc_cookie revert to received value if TRUE 2293 * 2294 * outputs: none 2295 */ 2296 static int 2297 zfs_ioc_inherit_prop(zfs_cmd_t *zc) 2298 { 2299 const char *propname = zc->zc_value; 2300 zfs_prop_t prop = zfs_name_to_prop(propname); 2301 boolean_t received = zc->zc_cookie; 2302 zprop_source_t source = (received 2303 ? ZPROP_SRC_NONE /* revert to received value, if any */ 2304 : ZPROP_SRC_INHERITED); /* explicitly inherit */ 2305 2306 if (received) { 2307 nvlist_t *dummy; 2308 nvpair_t *pair; 2309 zprop_type_t type; 2310 int err; 2311 2312 /* 2313 * zfs_prop_set_special() expects properties in the form of an 2314 * nvpair with type info. 2315 */ 2316 if (prop == ZPROP_INVAL) { 2317 if (!zfs_prop_user(propname)) 2318 return (EINVAL); 2319 2320 type = PROP_TYPE_STRING; 2321 } else if (prop == ZFS_PROP_VOLSIZE || 2322 prop == ZFS_PROP_VERSION) { 2323 return (EINVAL); 2324 } else { 2325 type = zfs_prop_get_type(prop); 2326 } 2327 2328 VERIFY(nvlist_alloc(&dummy, NV_UNIQUE_NAME, KM_SLEEP) == 0); 2329 2330 switch (type) { 2331 case PROP_TYPE_STRING: 2332 VERIFY(0 == nvlist_add_string(dummy, propname, "")); 2333 break; 2334 case PROP_TYPE_NUMBER: 2335 case PROP_TYPE_INDEX: 2336 VERIFY(0 == nvlist_add_uint64(dummy, propname, 0)); 2337 break; 2338 default: 2339 nvlist_free(dummy); 2340 return (EINVAL); 2341 } 2342 2343 pair = nvlist_next_nvpair(dummy, NULL); 2344 err = zfs_prop_set_special(zc->zc_name, source, pair); 2345 nvlist_free(dummy); 2346 if (err != -1) 2347 return (err); /* special property already handled */ 2348 } else { 2349 /* 2350 * Only check this in the non-received case. We want to allow 2351 * 'inherit -S' to revert non-inheritable properties like quota 2352 * and reservation to the received or default values even though 2353 * they are not considered inheritable. 2354 */ 2355 if (prop != ZPROP_INVAL && !zfs_prop_inheritable(prop)) 2356 return (EINVAL); 2357 } 2358 2359 /* the property name has been validated by zfs_secpolicy_inherit() */ 2360 return (dsl_prop_set(zc->zc_name, zc->zc_value, source, 0, 0, NULL)); 2361 } 2362 2363 static int 2364 zfs_ioc_pool_set_props(zfs_cmd_t *zc) 2365 { 2366 nvlist_t *props; 2367 spa_t *spa; 2368 int error; 2369 nvpair_t *pair; 2370 2371 if (error = get_nvlist(zc->zc_nvlist_src, zc->zc_nvlist_src_size, 2372 zc->zc_iflags, &props)) 2373 return (error); 2374 2375 /* 2376 * If the only property is the configfile, then just do a spa_lookup() 2377 * to handle the faulted case. 2378 */ 2379 pair = nvlist_next_nvpair(props, NULL); 2380 if (pair != NULL && strcmp(nvpair_name(pair), 2381 zpool_prop_to_name(ZPOOL_PROP_CACHEFILE)) == 0 && 2382 nvlist_next_nvpair(props, pair) == NULL) { 2383 mutex_enter(&spa_namespace_lock); 2384 if ((spa = spa_lookup(zc->zc_name)) != NULL) { 2385 spa_configfile_set(spa, props, B_FALSE); 2386 spa_config_sync(spa, B_FALSE, B_TRUE); 2387 } 2388 mutex_exit(&spa_namespace_lock); 2389 if (spa != NULL) { 2390 nvlist_free(props); 2391 return (0); 2392 } 2393 } 2394 2395 if ((error = spa_open(zc->zc_name, &spa, FTAG)) != 0) { 2396 nvlist_free(props); 2397 return (error); 2398 } 2399 2400 error = spa_prop_set(spa, props); 2401 2402 nvlist_free(props); 2403 spa_close(spa, FTAG); 2404 2405 return (error); 2406 } 2407 2408 static int 2409 zfs_ioc_pool_get_props(zfs_cmd_t *zc) 2410 { 2411 spa_t *spa; 2412 int error; 2413 nvlist_t *nvp = NULL; 2414 2415 if ((error = spa_open(zc->zc_name, &spa, FTAG)) != 0) { 2416 /* 2417 * If the pool is faulted, there may be properties we can still 2418 * get (such as altroot and cachefile), so attempt to get them 2419 * anyway. 2420 */ 2421 mutex_enter(&spa_namespace_lock); 2422 if ((spa = spa_lookup(zc->zc_name)) != NULL) 2423 error = spa_prop_get(spa, &nvp); 2424 mutex_exit(&spa_namespace_lock); 2425 } else { 2426 error = spa_prop_get(spa, &nvp); 2427 spa_close(spa, FTAG); 2428 } 2429 2430 if (error == 0 && zc->zc_nvlist_dst != NULL) 2431 error = put_nvlist(zc, nvp); 2432 else 2433 error = EFAULT; 2434 2435 nvlist_free(nvp); 2436 return (error); 2437 } 2438 2439 /* 2440 * inputs: 2441 * zc_name name of filesystem 2442 * zc_nvlist_src{_size} nvlist of delegated permissions 2443 * zc_perm_action allow/unallow flag 2444 * 2445 * outputs: none 2446 */ 2447 static int 2448 zfs_ioc_set_fsacl(zfs_cmd_t *zc) 2449 { 2450 int error; 2451 nvlist_t *fsaclnv = NULL; 2452 2453 if ((error = get_nvlist(zc->zc_nvlist_src, zc->zc_nvlist_src_size, 2454 zc->zc_iflags, &fsaclnv)) != 0) 2455 return (error); 2456 2457 /* 2458 * Verify nvlist is constructed correctly 2459 */ 2460 if ((error = zfs_deleg_verify_nvlist(fsaclnv)) != 0) { 2461 nvlist_free(fsaclnv); 2462 return (EINVAL); 2463 } 2464 2465 /* 2466 * If we don't have PRIV_SYS_MOUNT, then validate 2467 * that user is allowed to hand out each permission in 2468 * the nvlist(s) 2469 */ 2470 2471 error = secpolicy_zfs(CRED()); 2472 if (error) { 2473 if (zc->zc_perm_action == B_FALSE) { 2474 error = dsl_deleg_can_allow(zc->zc_name, 2475 fsaclnv, CRED()); 2476 } else { 2477 error = dsl_deleg_can_unallow(zc->zc_name, 2478 fsaclnv, CRED()); 2479 } 2480 } 2481 2482 if (error == 0) 2483 error = dsl_deleg_set(zc->zc_name, fsaclnv, zc->zc_perm_action); 2484 2485 nvlist_free(fsaclnv); 2486 return (error); 2487 } 2488 2489 /* 2490 * inputs: 2491 * zc_name name of filesystem 2492 * 2493 * outputs: 2494 * zc_nvlist_src{_size} nvlist of delegated permissions 2495 */ 2496 static int 2497 zfs_ioc_get_fsacl(zfs_cmd_t *zc) 2498 { 2499 nvlist_t *nvp; 2500 int error; 2501 2502 if ((error = dsl_deleg_get(zc->zc_name, &nvp)) == 0) { 2503 error = put_nvlist(zc, nvp); 2504 nvlist_free(nvp); 2505 } 2506 2507 return (error); 2508 } 2509 2510 /* 2511 * Search the vfs list for a specified resource. Returns a pointer to it 2512 * or NULL if no suitable entry is found. The caller of this routine 2513 * is responsible for releasing the returned vfs pointer. 2514 */ 2515 static vfs_t * 2516 zfs_get_vfs(const char *resource) 2517 { 2518 struct vfs *vfsp; 2519 struct vfs *vfs_found = NULL; 2520 2521 vfs_list_read_lock(); 2522 vfsp = rootvfs; 2523 do { 2524 if (strcmp(refstr_value(vfsp->vfs_resource), resource) == 0) { 2525 VFS_HOLD(vfsp); 2526 vfs_found = vfsp; 2527 break; 2528 } 2529 vfsp = vfsp->vfs_next; 2530 } while (vfsp != rootvfs); 2531 vfs_list_unlock(); 2532 return (vfs_found); 2533 } 2534 2535 /* ARGSUSED */ 2536 static void 2537 zfs_create_cb(objset_t *os, void *arg, cred_t *cr, dmu_tx_t *tx) 2538 { 2539 zfs_creat_t *zct = arg; 2540 2541 zfs_create_fs(os, cr, zct->zct_zplprops, tx); 2542 } 2543 2544 #define ZFS_PROP_UNDEFINED ((uint64_t)-1) 2545 2546 /* 2547 * inputs: 2548 * createprops list of properties requested by creator 2549 * default_zplver zpl version to use if unspecified in createprops 2550 * fuids_ok fuids allowed in this version of the spa? 2551 * os parent objset pointer (NULL if root fs) 2552 * 2553 * outputs: 2554 * zplprops values for the zplprops we attach to the master node object 2555 * is_ci true if requested file system will be purely case-insensitive 2556 * 2557 * Determine the settings for utf8only, normalization and 2558 * casesensitivity. Specific values may have been requested by the 2559 * creator and/or we can inherit values from the parent dataset. If 2560 * the file system is of too early a vintage, a creator can not 2561 * request settings for these properties, even if the requested 2562 * setting is the default value. We don't actually want to create dsl 2563 * properties for these, so remove them from the source nvlist after 2564 * processing. 2565 */ 2566 static int 2567 zfs_fill_zplprops_impl(objset_t *os, uint64_t zplver, 2568 boolean_t fuids_ok, boolean_t sa_ok, nvlist_t *createprops, 2569 nvlist_t *zplprops, boolean_t *is_ci) 2570 { 2571 uint64_t sense = ZFS_PROP_UNDEFINED; 2572 uint64_t norm = ZFS_PROP_UNDEFINED; 2573 uint64_t u8 = ZFS_PROP_UNDEFINED; 2574 2575 ASSERT(zplprops != NULL); 2576 2577 /* 2578 * Pull out creator prop choices, if any. 2579 */ 2580 if (createprops) { 2581 (void) nvlist_lookup_uint64(createprops, 2582 zfs_prop_to_name(ZFS_PROP_VERSION), &zplver); 2583 (void) nvlist_lookup_uint64(createprops, 2584 zfs_prop_to_name(ZFS_PROP_NORMALIZE), &norm); 2585 (void) nvlist_remove_all(createprops, 2586 zfs_prop_to_name(ZFS_PROP_NORMALIZE)); 2587 (void) nvlist_lookup_uint64(createprops, 2588 zfs_prop_to_name(ZFS_PROP_UTF8ONLY), &u8); 2589 (void) nvlist_remove_all(createprops, 2590 zfs_prop_to_name(ZFS_PROP_UTF8ONLY)); 2591 (void) nvlist_lookup_uint64(createprops, 2592 zfs_prop_to_name(ZFS_PROP_CASE), &sense); 2593 (void) nvlist_remove_all(createprops, 2594 zfs_prop_to_name(ZFS_PROP_CASE)); 2595 } 2596 2597 /* 2598 * If the zpl version requested is whacky or the file system 2599 * or pool is version is too "young" to support normalization 2600 * and the creator tried to set a value for one of the props, 2601 * error out. 2602 */ 2603 if ((zplver < ZPL_VERSION_INITIAL || zplver > ZPL_VERSION) || 2604 (zplver >= ZPL_VERSION_FUID && !fuids_ok) || 2605 (zplver >= ZPL_VERSION_SA && !sa_ok) || 2606 (zplver < ZPL_VERSION_NORMALIZATION && 2607 (norm != ZFS_PROP_UNDEFINED || u8 != ZFS_PROP_UNDEFINED || 2608 sense != ZFS_PROP_UNDEFINED))) 2609 return (ENOTSUP); 2610 2611 /* 2612 * Put the version in the zplprops 2613 */ 2614 VERIFY(nvlist_add_uint64(zplprops, 2615 zfs_prop_to_name(ZFS_PROP_VERSION), zplver) == 0); 2616 2617 if (norm == ZFS_PROP_UNDEFINED) 2618 VERIFY(zfs_get_zplprop(os, ZFS_PROP_NORMALIZE, &norm) == 0); 2619 VERIFY(nvlist_add_uint64(zplprops, 2620 zfs_prop_to_name(ZFS_PROP_NORMALIZE), norm) == 0); 2621 2622 /* 2623 * If we're normalizing, names must always be valid UTF-8 strings. 2624 */ 2625 if (norm) 2626 u8 = 1; 2627 if (u8 == ZFS_PROP_UNDEFINED) 2628 VERIFY(zfs_get_zplprop(os, ZFS_PROP_UTF8ONLY, &u8) == 0); 2629 VERIFY(nvlist_add_uint64(zplprops, 2630 zfs_prop_to_name(ZFS_PROP_UTF8ONLY), u8) == 0); 2631 2632 if (sense == ZFS_PROP_UNDEFINED) 2633 VERIFY(zfs_get_zplprop(os, ZFS_PROP_CASE, &sense) == 0); 2634 VERIFY(nvlist_add_uint64(zplprops, 2635 zfs_prop_to_name(ZFS_PROP_CASE), sense) == 0); 2636 2637 if (is_ci) 2638 *is_ci = (sense == ZFS_CASE_INSENSITIVE); 2639 2640 return (0); 2641 } 2642 2643 static int 2644 zfs_fill_zplprops(const char *dataset, nvlist_t *createprops, 2645 nvlist_t *zplprops, boolean_t *is_ci) 2646 { 2647 boolean_t fuids_ok, sa_ok; 2648 uint64_t zplver = ZPL_VERSION; 2649 objset_t *os = NULL; 2650 char parentname[MAXNAMELEN]; 2651 char *cp; 2652 spa_t *spa; 2653 uint64_t spa_vers; 2654 int error; 2655 2656 (void) strlcpy(parentname, dataset, sizeof (parentname)); 2657 cp = strrchr(parentname, '/'); 2658 ASSERT(cp != NULL); 2659 cp[0] = '\0'; 2660 2661 if ((error = spa_open(dataset, &spa, FTAG)) != 0) 2662 return (error); 2663 2664 spa_vers = spa_version(spa); 2665 spa_close(spa, FTAG); 2666 2667 zplver = zfs_zpl_version_map(spa_vers); 2668 fuids_ok = (zplver >= ZPL_VERSION_FUID); 2669 sa_ok = (zplver >= ZPL_VERSION_SA); 2670 2671 /* 2672 * Open parent object set so we can inherit zplprop values. 2673 */ 2674 if ((error = dmu_objset_hold(parentname, FTAG, &os)) != 0) 2675 return (error); 2676 2677 error = zfs_fill_zplprops_impl(os, zplver, fuids_ok, sa_ok, createprops, 2678 zplprops, is_ci); 2679 dmu_objset_rele(os, FTAG); 2680 return (error); 2681 } 2682 2683 static int 2684 zfs_fill_zplprops_root(uint64_t spa_vers, nvlist_t *createprops, 2685 nvlist_t *zplprops, boolean_t *is_ci) 2686 { 2687 boolean_t fuids_ok; 2688 boolean_t sa_ok; 2689 uint64_t zplver = ZPL_VERSION; 2690 int error; 2691 2692 zplver = zfs_zpl_version_map(spa_vers); 2693 fuids_ok = (zplver >= ZPL_VERSION_FUID); 2694 sa_ok = (zplver >= ZPL_VERSION_SA); 2695 2696 error = zfs_fill_zplprops_impl(NULL, zplver, fuids_ok, sa_ok, 2697 createprops, zplprops, is_ci); 2698 return (error); 2699 } 2700 2701 /* 2702 * inputs: 2703 * zc_objset_type type of objset to create (fs vs zvol) 2704 * zc_name name of new objset 2705 * zc_value name of snapshot to clone from (may be empty) 2706 * zc_nvlist_src{_size} nvlist of properties to apply 2707 * 2708 * outputs: none 2709 */ 2710 static int 2711 zfs_ioc_create(zfs_cmd_t *zc) 2712 { 2713 objset_t *clone; 2714 int error = 0; 2715 zfs_creat_t zct; 2716 nvlist_t *nvprops = NULL; 2717 void (*cbfunc)(objset_t *os, void *arg, cred_t *cr, dmu_tx_t *tx); 2718 dmu_objset_type_t type = zc->zc_objset_type; 2719 2720 switch (type) { 2721 2722 case DMU_OST_ZFS: 2723 cbfunc = zfs_create_cb; 2724 break; 2725 2726 case DMU_OST_ZVOL: 2727 cbfunc = zvol_create_cb; 2728 break; 2729 2730 default: 2731 cbfunc = NULL; 2732 break; 2733 } 2734 if (strchr(zc->zc_name, '@') || 2735 strchr(zc->zc_name, '%')) 2736 return (EINVAL); 2737 2738 if (zc->zc_nvlist_src != NULL && 2739 (error = get_nvlist(zc->zc_nvlist_src, zc->zc_nvlist_src_size, 2740 zc->zc_iflags, &nvprops)) != 0) 2741 return (error); 2742 2743 zct.zct_zplprops = NULL; 2744 zct.zct_props = nvprops; 2745 2746 if (zc->zc_value[0] != '\0') { 2747 /* 2748 * We're creating a clone of an existing snapshot. 2749 */ 2750 zc->zc_value[sizeof (zc->zc_value) - 1] = '\0'; 2751 if (dataset_namecheck(zc->zc_value, NULL, NULL) != 0) { 2752 nvlist_free(nvprops); 2753 return (EINVAL); 2754 } 2755 2756 error = dmu_objset_hold(zc->zc_value, FTAG, &clone); 2757 if (error) { 2758 nvlist_free(nvprops); 2759 return (error); 2760 } 2761 2762 error = dmu_objset_clone(zc->zc_name, dmu_objset_ds(clone), 0); 2763 dmu_objset_rele(clone, FTAG); 2764 if (error) { 2765 nvlist_free(nvprops); 2766 return (error); 2767 } 2768 } else { 2769 boolean_t is_insensitive = B_FALSE; 2770 2771 if (cbfunc == NULL) { 2772 nvlist_free(nvprops); 2773 return (EINVAL); 2774 } 2775 2776 if (type == DMU_OST_ZVOL) { 2777 uint64_t volsize, volblocksize; 2778 2779 if (nvprops == NULL || 2780 nvlist_lookup_uint64(nvprops, 2781 zfs_prop_to_name(ZFS_PROP_VOLSIZE), 2782 &volsize) != 0) { 2783 nvlist_free(nvprops); 2784 return (EINVAL); 2785 } 2786 2787 if ((error = nvlist_lookup_uint64(nvprops, 2788 zfs_prop_to_name(ZFS_PROP_VOLBLOCKSIZE), 2789 &volblocksize)) != 0 && error != ENOENT) { 2790 nvlist_free(nvprops); 2791 return (EINVAL); 2792 } 2793 2794 if (error != 0) 2795 volblocksize = zfs_prop_default_numeric( 2796 ZFS_PROP_VOLBLOCKSIZE); 2797 2798 if ((error = zvol_check_volblocksize( 2799 volblocksize)) != 0 || 2800 (error = zvol_check_volsize(volsize, 2801 volblocksize)) != 0) { 2802 nvlist_free(nvprops); 2803 return (error); 2804 } 2805 } else if (type == DMU_OST_ZFS) { 2806 int error; 2807 2808 /* 2809 * We have to have normalization and 2810 * case-folding flags correct when we do the 2811 * file system creation, so go figure them out 2812 * now. 2813 */ 2814 VERIFY(nvlist_alloc(&zct.zct_zplprops, 2815 NV_UNIQUE_NAME, KM_SLEEP) == 0); 2816 error = zfs_fill_zplprops(zc->zc_name, nvprops, 2817 zct.zct_zplprops, &is_insensitive); 2818 if (error != 0) { 2819 nvlist_free(nvprops); 2820 nvlist_free(zct.zct_zplprops); 2821 return (error); 2822 } 2823 } 2824 error = dmu_objset_create(zc->zc_name, type, 2825 is_insensitive ? DS_FLAG_CI_DATASET : 0, cbfunc, &zct); 2826 nvlist_free(zct.zct_zplprops); 2827 } 2828 2829 /* 2830 * It would be nice to do this atomically. 2831 */ 2832 if (error == 0) { 2833 error = zfs_set_prop_nvlist(zc->zc_name, ZPROP_SRC_LOCAL, 2834 nvprops, NULL); 2835 if (error != 0) 2836 (void) dmu_objset_destroy(zc->zc_name, B_FALSE); 2837 } 2838 nvlist_free(nvprops); 2839 return (error); 2840 } 2841 2842 /* 2843 * inputs: 2844 * zc_name name of filesystem 2845 * zc_value short name of snapshot 2846 * zc_cookie recursive flag 2847 * zc_nvlist_src[_size] property list 2848 * 2849 * outputs: 2850 * zc_value short snapname (i.e. part after the '@') 2851 */ 2852 static int 2853 zfs_ioc_snapshot(zfs_cmd_t *zc) 2854 { 2855 nvlist_t *nvprops = NULL; 2856 int error; 2857 boolean_t recursive = zc->zc_cookie; 2858 2859 if (snapshot_namecheck(zc->zc_value, NULL, NULL) != 0) 2860 return (EINVAL); 2861 2862 if (zc->zc_nvlist_src != NULL && 2863 (error = get_nvlist(zc->zc_nvlist_src, zc->zc_nvlist_src_size, 2864 zc->zc_iflags, &nvprops)) != 0) 2865 return (error); 2866 2867 error = zfs_check_userprops(zc->zc_name, nvprops); 2868 if (error) 2869 goto out; 2870 2871 if (!nvlist_empty(nvprops) && 2872 zfs_earlier_version(zc->zc_name, SPA_VERSION_SNAP_PROPS)) { 2873 error = ENOTSUP; 2874 goto out; 2875 } 2876 2877 error = dmu_objset_snapshot(zc->zc_name, zc->zc_value, 2878 nvprops, recursive); 2879 2880 out: 2881 nvlist_free(nvprops); 2882 return (error); 2883 } 2884 2885 int 2886 zfs_unmount_snap(const char *name, void *arg) 2887 { 2888 vfs_t *vfsp = NULL; 2889 2890 if (arg) { 2891 char *snapname = arg; 2892 char *fullname = kmem_asprintf("%s@%s", name, snapname); 2893 vfsp = zfs_get_vfs(fullname); 2894 strfree(fullname); 2895 } else if (strchr(name, '@')) { 2896 vfsp = zfs_get_vfs(name); 2897 } 2898 2899 if (vfsp) { 2900 /* 2901 * Always force the unmount for snapshots. 2902 */ 2903 int flag = MS_FORCE; 2904 int err; 2905 2906 if ((err = vn_vfswlock(vfsp->vfs_vnodecovered)) != 0) { 2907 VFS_RELE(vfsp); 2908 return (err); 2909 } 2910 VFS_RELE(vfsp); 2911 if ((err = dounmount(vfsp, flag, kcred)) != 0) 2912 return (err); 2913 } 2914 return (0); 2915 } 2916 2917 /* 2918 * inputs: 2919 * zc_name name of filesystem 2920 * zc_value short name of snapshot 2921 * zc_defer_destroy mark for deferred destroy 2922 * 2923 * outputs: none 2924 */ 2925 static int 2926 zfs_ioc_destroy_snaps(zfs_cmd_t *zc) 2927 { 2928 int err; 2929 2930 if (snapshot_namecheck(zc->zc_value, NULL, NULL) != 0) 2931 return (EINVAL); 2932 err = dmu_objset_find(zc->zc_name, 2933 zfs_unmount_snap, zc->zc_value, DS_FIND_CHILDREN); 2934 if (err) 2935 return (err); 2936 return (dmu_snapshots_destroy(zc->zc_name, zc->zc_value, 2937 zc->zc_defer_destroy)); 2938 } 2939 2940 /* 2941 * inputs: 2942 * zc_name name of dataset to destroy 2943 * zc_objset_type type of objset 2944 * zc_defer_destroy mark for deferred destroy 2945 * 2946 * outputs: none 2947 */ 2948 static int 2949 zfs_ioc_destroy(zfs_cmd_t *zc) 2950 { 2951 int err; 2952 if (strchr(zc->zc_name, '@') && zc->zc_objset_type == DMU_OST_ZFS) { 2953 err = zfs_unmount_snap(zc->zc_name, NULL); 2954 if (err) 2955 return (err); 2956 } 2957 2958 err = dmu_objset_destroy(zc->zc_name, zc->zc_defer_destroy); 2959 if (zc->zc_objset_type == DMU_OST_ZVOL && err == 0) 2960 (void) zvol_remove_minor(zc->zc_name); 2961 return (err); 2962 } 2963 2964 /* 2965 * inputs: 2966 * zc_name name of dataset to rollback (to most recent snapshot) 2967 * 2968 * outputs: none 2969 */ 2970 static int 2971 zfs_ioc_rollback(zfs_cmd_t *zc) 2972 { 2973 dsl_dataset_t *ds, *clone; 2974 int error; 2975 zfsvfs_t *zfsvfs; 2976 char *clone_name; 2977 2978 error = dsl_dataset_hold(zc->zc_name, FTAG, &ds); 2979 if (error) 2980 return (error); 2981 2982 /* must not be a snapshot */ 2983 if (dsl_dataset_is_snapshot(ds)) { 2984 dsl_dataset_rele(ds, FTAG); 2985 return (EINVAL); 2986 } 2987 2988 /* must have a most recent snapshot */ 2989 if (ds->ds_phys->ds_prev_snap_txg < TXG_INITIAL) { 2990 dsl_dataset_rele(ds, FTAG); 2991 return (EINVAL); 2992 } 2993 2994 /* 2995 * Create clone of most recent snapshot. 2996 */ 2997 clone_name = kmem_asprintf("%s/%%rollback", zc->zc_name); 2998 error = dmu_objset_clone(clone_name, ds->ds_prev, DS_FLAG_INCONSISTENT); 2999 if (error) 3000 goto out; 3001 3002 error = dsl_dataset_own(clone_name, B_TRUE, FTAG, &clone); 3003 if (error) 3004 goto out; 3005 3006 /* 3007 * Do clone swap. 3008 */ 3009 if (getzfsvfs(zc->zc_name, &zfsvfs) == 0) { 3010 error = zfs_suspend_fs(zfsvfs); 3011 if (error == 0) { 3012 int resume_err; 3013 3014 if (dsl_dataset_tryown(ds, B_FALSE, FTAG)) { 3015 error = dsl_dataset_clone_swap(clone, ds, 3016 B_TRUE); 3017 dsl_dataset_disown(ds, FTAG); 3018 ds = NULL; 3019 } else { 3020 error = EBUSY; 3021 } 3022 resume_err = zfs_resume_fs(zfsvfs, zc->zc_name); 3023 error = error ? error : resume_err; 3024 } 3025 VFS_RELE(zfsvfs->z_vfs); 3026 } else { 3027 if (dsl_dataset_tryown(ds, B_FALSE, FTAG)) { 3028 error = dsl_dataset_clone_swap(clone, ds, B_TRUE); 3029 dsl_dataset_disown(ds, FTAG); 3030 ds = NULL; 3031 } else { 3032 error = EBUSY; 3033 } 3034 } 3035 3036 /* 3037 * Destroy clone (which also closes it). 3038 */ 3039 (void) dsl_dataset_destroy(clone, FTAG, B_FALSE); 3040 3041 out: 3042 strfree(clone_name); 3043 if (ds) 3044 dsl_dataset_rele(ds, FTAG); 3045 return (error); 3046 } 3047 3048 /* 3049 * inputs: 3050 * zc_name old name of dataset 3051 * zc_value new name of dataset 3052 * zc_cookie recursive flag (only valid for snapshots) 3053 * 3054 * outputs: none 3055 */ 3056 static int 3057 zfs_ioc_rename(zfs_cmd_t *zc) 3058 { 3059 boolean_t recursive = zc->zc_cookie & 1; 3060 3061 zc->zc_value[sizeof (zc->zc_value) - 1] = '\0'; 3062 if (dataset_namecheck(zc->zc_value, NULL, NULL) != 0 || 3063 strchr(zc->zc_value, '%')) 3064 return (EINVAL); 3065 3066 /* 3067 * Unmount snapshot unless we're doing a recursive rename, 3068 * in which case the dataset code figures out which snapshots 3069 * to unmount. 3070 */ 3071 if (!recursive && strchr(zc->zc_name, '@') != NULL && 3072 zc->zc_objset_type == DMU_OST_ZFS) { 3073 int err = zfs_unmount_snap(zc->zc_name, NULL); 3074 if (err) 3075 return (err); 3076 } 3077 if (zc->zc_objset_type == DMU_OST_ZVOL) 3078 (void) zvol_remove_minor(zc->zc_name); 3079 return (dmu_objset_rename(zc->zc_name, zc->zc_value, recursive)); 3080 } 3081 3082 static int 3083 zfs_check_settable(const char *dsname, nvpair_t *pair, cred_t *cr) 3084 { 3085 const char *propname = nvpair_name(pair); 3086 boolean_t issnap = (strchr(dsname, '@') != NULL); 3087 zfs_prop_t prop = zfs_name_to_prop(propname); 3088 uint64_t intval; 3089 int err; 3090 3091 if (prop == ZPROP_INVAL) { 3092 if (zfs_prop_user(propname)) { 3093 if (err = zfs_secpolicy_write_perms(dsname, 3094 ZFS_DELEG_PERM_USERPROP, cr)) 3095 return (err); 3096 return (0); 3097 } 3098 3099 if (!issnap && zfs_prop_userquota(propname)) { 3100 const char *perm = NULL; 3101 const char *uq_prefix = 3102 zfs_userquota_prop_prefixes[ZFS_PROP_USERQUOTA]; 3103 const char *gq_prefix = 3104 zfs_userquota_prop_prefixes[ZFS_PROP_GROUPQUOTA]; 3105 3106 if (strncmp(propname, uq_prefix, 3107 strlen(uq_prefix)) == 0) { 3108 perm = ZFS_DELEG_PERM_USERQUOTA; 3109 } else if (strncmp(propname, gq_prefix, 3110 strlen(gq_prefix)) == 0) { 3111 perm = ZFS_DELEG_PERM_GROUPQUOTA; 3112 } else { 3113 /* USERUSED and GROUPUSED are read-only */ 3114 return (EINVAL); 3115 } 3116 3117 if (err = zfs_secpolicy_write_perms(dsname, perm, cr)) 3118 return (err); 3119 return (0); 3120 } 3121 3122 return (EINVAL); 3123 } 3124 3125 if (issnap) 3126 return (EINVAL); 3127 3128 if (nvpair_type(pair) == DATA_TYPE_NVLIST) { 3129 /* 3130 * dsl_prop_get_all_impl() returns properties in this 3131 * format. 3132 */ 3133 nvlist_t *attrs; 3134 VERIFY(nvpair_value_nvlist(pair, &attrs) == 0); 3135 VERIFY(nvlist_lookup_nvpair(attrs, ZPROP_VALUE, 3136 &pair) == 0); 3137 } 3138 3139 /* 3140 * Check that this value is valid for this pool version 3141 */ 3142 switch (prop) { 3143 case ZFS_PROP_COMPRESSION: 3144 /* 3145 * If the user specified gzip compression, make sure 3146 * the SPA supports it. We ignore any errors here since 3147 * we'll catch them later. 3148 */ 3149 if (nvpair_type(pair) == DATA_TYPE_UINT64 && 3150 nvpair_value_uint64(pair, &intval) == 0) { 3151 if (intval >= ZIO_COMPRESS_GZIP_1 && 3152 intval <= ZIO_COMPRESS_GZIP_9 && 3153 zfs_earlier_version(dsname, 3154 SPA_VERSION_GZIP_COMPRESSION)) { 3155 return (ENOTSUP); 3156 } 3157 3158 if (intval == ZIO_COMPRESS_ZLE && 3159 zfs_earlier_version(dsname, 3160 SPA_VERSION_ZLE_COMPRESSION)) 3161 return (ENOTSUP); 3162 3163 /* 3164 * If this is a bootable dataset then 3165 * verify that the compression algorithm 3166 * is supported for booting. We must return 3167 * something other than ENOTSUP since it 3168 * implies a downrev pool version. 3169 */ 3170 if (zfs_is_bootfs(dsname) && 3171 !BOOTFS_COMPRESS_VALID(intval)) { 3172 return (ERANGE); 3173 } 3174 } 3175 break; 3176 3177 case ZFS_PROP_COPIES: 3178 if (zfs_earlier_version(dsname, SPA_VERSION_DITTO_BLOCKS)) 3179 return (ENOTSUP); 3180 break; 3181 3182 case ZFS_PROP_DEDUP: 3183 if (zfs_earlier_version(dsname, SPA_VERSION_DEDUP)) 3184 return (ENOTSUP); 3185 break; 3186 3187 case ZFS_PROP_SHARESMB: 3188 if (zpl_earlier_version(dsname, ZPL_VERSION_FUID)) 3189 return (ENOTSUP); 3190 break; 3191 3192 case ZFS_PROP_ACLINHERIT: 3193 if (nvpair_type(pair) == DATA_TYPE_UINT64 && 3194 nvpair_value_uint64(pair, &intval) == 0) { 3195 if (intval == ZFS_ACL_PASSTHROUGH_X && 3196 zfs_earlier_version(dsname, 3197 SPA_VERSION_PASSTHROUGH_X)) 3198 return (ENOTSUP); 3199 } 3200 break; 3201 } 3202 3203 return (zfs_secpolicy_setprop(dsname, prop, pair, CRED())); 3204 } 3205 3206 /* 3207 * Removes properties from the given props list that fail permission checks 3208 * needed to clear them and to restore them in case of a receive error. For each 3209 * property, make sure we have both set and inherit permissions. 3210 * 3211 * Returns the first error encountered if any permission checks fail. If the 3212 * caller provides a non-NULL errlist, it also gives the complete list of names 3213 * of all the properties that failed a permission check along with the 3214 * corresponding error numbers. The caller is responsible for freeing the 3215 * returned errlist. 3216 * 3217 * If every property checks out successfully, zero is returned and the list 3218 * pointed at by errlist is NULL. 3219 */ 3220 static int 3221 zfs_check_clearable(char *dataset, nvlist_t *props, nvlist_t **errlist) 3222 { 3223 zfs_cmd_t *zc; 3224 nvpair_t *pair, *next_pair; 3225 nvlist_t *errors; 3226 int err, rv = 0; 3227 3228 if (props == NULL) 3229 return (0); 3230 3231 VERIFY(nvlist_alloc(&errors, NV_UNIQUE_NAME, KM_SLEEP) == 0); 3232 3233 zc = kmem_alloc(sizeof (zfs_cmd_t), KM_SLEEP); 3234 (void) strcpy(zc->zc_name, dataset); 3235 pair = nvlist_next_nvpair(props, NULL); 3236 while (pair != NULL) { 3237 next_pair = nvlist_next_nvpair(props, pair); 3238 3239 (void) strcpy(zc->zc_value, nvpair_name(pair)); 3240 if ((err = zfs_check_settable(dataset, pair, CRED())) != 0 || 3241 (err = zfs_secpolicy_inherit(zc, CRED())) != 0) { 3242 VERIFY(nvlist_remove_nvpair(props, pair) == 0); 3243 VERIFY(nvlist_add_int32(errors, 3244 zc->zc_value, err) == 0); 3245 } 3246 pair = next_pair; 3247 } 3248 kmem_free(zc, sizeof (zfs_cmd_t)); 3249 3250 if ((pair = nvlist_next_nvpair(errors, NULL)) == NULL) { 3251 nvlist_free(errors); 3252 errors = NULL; 3253 } else { 3254 VERIFY(nvpair_value_int32(pair, &rv) == 0); 3255 } 3256 3257 if (errlist == NULL) 3258 nvlist_free(errors); 3259 else 3260 *errlist = errors; 3261 3262 return (rv); 3263 } 3264 3265 static boolean_t 3266 propval_equals(nvpair_t *p1, nvpair_t *p2) 3267 { 3268 if (nvpair_type(p1) == DATA_TYPE_NVLIST) { 3269 /* dsl_prop_get_all_impl() format */ 3270 nvlist_t *attrs; 3271 VERIFY(nvpair_value_nvlist(p1, &attrs) == 0); 3272 VERIFY(nvlist_lookup_nvpair(attrs, ZPROP_VALUE, 3273 &p1) == 0); 3274 } 3275 3276 if (nvpair_type(p2) == DATA_TYPE_NVLIST) { 3277 nvlist_t *attrs; 3278 VERIFY(nvpair_value_nvlist(p2, &attrs) == 0); 3279 VERIFY(nvlist_lookup_nvpair(attrs, ZPROP_VALUE, 3280 &p2) == 0); 3281 } 3282 3283 if (nvpair_type(p1) != nvpair_type(p2)) 3284 return (B_FALSE); 3285 3286 if (nvpair_type(p1) == DATA_TYPE_STRING) { 3287 char *valstr1, *valstr2; 3288 3289 VERIFY(nvpair_value_string(p1, (char **)&valstr1) == 0); 3290 VERIFY(nvpair_value_string(p2, (char **)&valstr2) == 0); 3291 return (strcmp(valstr1, valstr2) == 0); 3292 } else { 3293 uint64_t intval1, intval2; 3294 3295 VERIFY(nvpair_value_uint64(p1, &intval1) == 0); 3296 VERIFY(nvpair_value_uint64(p2, &intval2) == 0); 3297 return (intval1 == intval2); 3298 } 3299 } 3300 3301 /* 3302 * Remove properties from props if they are not going to change (as determined 3303 * by comparison with origprops). Remove them from origprops as well, since we 3304 * do not need to clear or restore properties that won't change. 3305 */ 3306 static void 3307 props_reduce(nvlist_t *props, nvlist_t *origprops) 3308 { 3309 nvpair_t *pair, *next_pair; 3310 3311 if (origprops == NULL) 3312 return; /* all props need to be received */ 3313 3314 pair = nvlist_next_nvpair(props, NULL); 3315 while (pair != NULL) { 3316 const char *propname = nvpair_name(pair); 3317 nvpair_t *match; 3318 3319 next_pair = nvlist_next_nvpair(props, pair); 3320 3321 if ((nvlist_lookup_nvpair(origprops, propname, 3322 &match) != 0) || !propval_equals(pair, match)) 3323 goto next; /* need to set received value */ 3324 3325 /* don't clear the existing received value */ 3326 (void) nvlist_remove_nvpair(origprops, match); 3327 /* don't bother receiving the property */ 3328 (void) nvlist_remove_nvpair(props, pair); 3329 next: 3330 pair = next_pair; 3331 } 3332 } 3333 3334 #ifdef DEBUG 3335 static boolean_t zfs_ioc_recv_inject_err; 3336 #endif 3337 3338 /* 3339 * inputs: 3340 * zc_name name of containing filesystem 3341 * zc_nvlist_src{_size} nvlist of properties to apply 3342 * zc_value name of snapshot to create 3343 * zc_string name of clone origin (if DRR_FLAG_CLONE) 3344 * zc_cookie file descriptor to recv from 3345 * zc_begin_record the BEGIN record of the stream (not byteswapped) 3346 * zc_guid force flag 3347 * zc_cleanup_fd cleanup-on-exit file descriptor 3348 * zc_action_handle handle for this guid/ds mapping (or zero on first call) 3349 * 3350 * outputs: 3351 * zc_cookie number of bytes read 3352 * zc_nvlist_dst{_size} error for each unapplied received property 3353 * zc_obj zprop_errflags_t 3354 * zc_action_handle handle for this guid/ds mapping 3355 */ 3356 static int 3357 zfs_ioc_recv(zfs_cmd_t *zc) 3358 { 3359 file_t *fp; 3360 objset_t *os; 3361 dmu_recv_cookie_t drc; 3362 boolean_t force = (boolean_t)zc->zc_guid; 3363 int fd; 3364 int error = 0; 3365 int props_error = 0; 3366 nvlist_t *errors; 3367 offset_t off; 3368 nvlist_t *props = NULL; /* sent properties */ 3369 nvlist_t *origprops = NULL; /* existing properties */ 3370 objset_t *origin = NULL; 3371 char *tosnap; 3372 char tofs[ZFS_MAXNAMELEN]; 3373 boolean_t first_recvd_props = B_FALSE; 3374 3375 if (dataset_namecheck(zc->zc_value, NULL, NULL) != 0 || 3376 strchr(zc->zc_value, '@') == NULL || 3377 strchr(zc->zc_value, '%')) 3378 return (EINVAL); 3379 3380 (void) strcpy(tofs, zc->zc_value); 3381 tosnap = strchr(tofs, '@'); 3382 *tosnap++ = '\0'; 3383 3384 if (zc->zc_nvlist_src != NULL && 3385 (error = get_nvlist(zc->zc_nvlist_src, zc->zc_nvlist_src_size, 3386 zc->zc_iflags, &props)) != 0) 3387 return (error); 3388 3389 fd = zc->zc_cookie; 3390 fp = getf(fd); 3391 if (fp == NULL) { 3392 nvlist_free(props); 3393 return (EBADF); 3394 } 3395 3396 VERIFY(nvlist_alloc(&errors, NV_UNIQUE_NAME, KM_SLEEP) == 0); 3397 3398 if (props && dmu_objset_hold(tofs, FTAG, &os) == 0) { 3399 if ((spa_version(os->os_spa) >= SPA_VERSION_RECVD_PROPS) && 3400 !dsl_prop_get_hasrecvd(os)) { 3401 first_recvd_props = B_TRUE; 3402 } 3403 3404 /* 3405 * If new received properties are supplied, they are to 3406 * completely replace the existing received properties, so stash 3407 * away the existing ones. 3408 */ 3409 if (dsl_prop_get_received(os, &origprops) == 0) { 3410 nvlist_t *errlist = NULL; 3411 /* 3412 * Don't bother writing a property if its value won't 3413 * change (and avoid the unnecessary security checks). 3414 * 3415 * The first receive after SPA_VERSION_RECVD_PROPS is a 3416 * special case where we blow away all local properties 3417 * regardless. 3418 */ 3419 if (!first_recvd_props) 3420 props_reduce(props, origprops); 3421 if (zfs_check_clearable(tofs, origprops, 3422 &errlist) != 0) 3423 (void) nvlist_merge(errors, errlist, 0); 3424 nvlist_free(errlist); 3425 } 3426 3427 dmu_objset_rele(os, FTAG); 3428 } 3429 3430 if (zc->zc_string[0]) { 3431 error = dmu_objset_hold(zc->zc_string, FTAG, &origin); 3432 if (error) 3433 goto out; 3434 } 3435 3436 error = dmu_recv_begin(tofs, tosnap, zc->zc_top_ds, 3437 &zc->zc_begin_record, force, origin, &drc); 3438 if (origin) 3439 dmu_objset_rele(origin, FTAG); 3440 if (error) 3441 goto out; 3442 3443 /* 3444 * Set properties before we receive the stream so that they are applied 3445 * to the new data. Note that we must call dmu_recv_stream() if 3446 * dmu_recv_begin() succeeds. 3447 */ 3448 if (props) { 3449 nvlist_t *errlist; 3450 3451 if (dmu_objset_from_ds(drc.drc_logical_ds, &os) == 0) { 3452 if (drc.drc_newfs) { 3453 if (spa_version(os->os_spa) >= 3454 SPA_VERSION_RECVD_PROPS) 3455 first_recvd_props = B_TRUE; 3456 } else if (origprops != NULL) { 3457 if (clear_received_props(os, tofs, origprops, 3458 first_recvd_props ? NULL : props) != 0) 3459 zc->zc_obj |= ZPROP_ERR_NOCLEAR; 3460 } else { 3461 zc->zc_obj |= ZPROP_ERR_NOCLEAR; 3462 } 3463 dsl_prop_set_hasrecvd(os); 3464 } else if (!drc.drc_newfs) { 3465 zc->zc_obj |= ZPROP_ERR_NOCLEAR; 3466 } 3467 3468 (void) zfs_set_prop_nvlist(tofs, ZPROP_SRC_RECEIVED, 3469 props, &errlist); 3470 (void) nvlist_merge(errors, errlist, 0); 3471 nvlist_free(errlist); 3472 } 3473 3474 if (fit_error_list(zc, &errors) != 0 || put_nvlist(zc, errors) != 0) { 3475 /* 3476 * Caller made zc->zc_nvlist_dst less than the minimum expected 3477 * size or supplied an invalid address. 3478 */ 3479 props_error = EINVAL; 3480 } 3481 3482 off = fp->f_offset; 3483 error = dmu_recv_stream(&drc, fp->f_vnode, &off, zc->zc_cleanup_fd, 3484 &zc->zc_action_handle); 3485 3486 if (error == 0) { 3487 zfsvfs_t *zfsvfs = NULL; 3488 3489 if (getzfsvfs(tofs, &zfsvfs) == 0) { 3490 /* online recv */ 3491 int end_err; 3492 3493 error = zfs_suspend_fs(zfsvfs); 3494 /* 3495 * If the suspend fails, then the recv_end will 3496 * likely also fail, and clean up after itself. 3497 */ 3498 end_err = dmu_recv_end(&drc); 3499 if (error == 0) 3500 error = zfs_resume_fs(zfsvfs, tofs); 3501 error = error ? error : end_err; 3502 VFS_RELE(zfsvfs->z_vfs); 3503 } else { 3504 error = dmu_recv_end(&drc); 3505 } 3506 } 3507 3508 zc->zc_cookie = off - fp->f_offset; 3509 if (VOP_SEEK(fp->f_vnode, fp->f_offset, &off, NULL) == 0) 3510 fp->f_offset = off; 3511 3512 #ifdef DEBUG 3513 if (zfs_ioc_recv_inject_err) { 3514 zfs_ioc_recv_inject_err = B_FALSE; 3515 error = 1; 3516 } 3517 #endif 3518 /* 3519 * On error, restore the original props. 3520 */ 3521 if (error && props) { 3522 if (dmu_objset_hold(tofs, FTAG, &os) == 0) { 3523 if (clear_received_props(os, tofs, props, NULL) != 0) { 3524 /* 3525 * We failed to clear the received properties. 3526 * Since we may have left a $recvd value on the 3527 * system, we can't clear the $hasrecvd flag. 3528 */ 3529 zc->zc_obj |= ZPROP_ERR_NORESTORE; 3530 } else if (first_recvd_props) { 3531 dsl_prop_unset_hasrecvd(os); 3532 } 3533 dmu_objset_rele(os, FTAG); 3534 } else if (!drc.drc_newfs) { 3535 /* We failed to clear the received properties. */ 3536 zc->zc_obj |= ZPROP_ERR_NORESTORE; 3537 } 3538 3539 if (origprops == NULL && !drc.drc_newfs) { 3540 /* We failed to stash the original properties. */ 3541 zc->zc_obj |= ZPROP_ERR_NORESTORE; 3542 } 3543 3544 /* 3545 * dsl_props_set() will not convert RECEIVED to LOCAL on or 3546 * after SPA_VERSION_RECVD_PROPS, so we need to specify LOCAL 3547 * explictly if we're restoring local properties cleared in the 3548 * first new-style receive. 3549 */ 3550 if (origprops != NULL && 3551 zfs_set_prop_nvlist(tofs, (first_recvd_props ? 3552 ZPROP_SRC_LOCAL : ZPROP_SRC_RECEIVED), 3553 origprops, NULL) != 0) { 3554 /* 3555 * We stashed the original properties but failed to 3556 * restore them. 3557 */ 3558 zc->zc_obj |= ZPROP_ERR_NORESTORE; 3559 } 3560 } 3561 out: 3562 nvlist_free(props); 3563 nvlist_free(origprops); 3564 nvlist_free(errors); 3565 releasef(fd); 3566 3567 if (error == 0) 3568 error = props_error; 3569 3570 return (error); 3571 } 3572 3573 /* 3574 * inputs: 3575 * zc_name name of snapshot to send 3576 * zc_value short name of incremental fromsnap (may be empty) 3577 * zc_cookie file descriptor to send stream to 3578 * zc_obj fromorigin flag (mutually exclusive with zc_value) 3579 * 3580 * outputs: none 3581 */ 3582 static int 3583 zfs_ioc_send(zfs_cmd_t *zc) 3584 { 3585 objset_t *fromsnap = NULL; 3586 objset_t *tosnap; 3587 file_t *fp; 3588 int error; 3589 offset_t off; 3590 3591 error = dmu_objset_hold(zc->zc_name, FTAG, &tosnap); 3592 if (error) 3593 return (error); 3594 3595 if (zc->zc_value[0] != '\0') { 3596 char *buf; 3597 char *cp; 3598 3599 buf = kmem_alloc(MAXPATHLEN, KM_SLEEP); 3600 (void) strncpy(buf, zc->zc_name, MAXPATHLEN); 3601 cp = strchr(buf, '@'); 3602 if (cp) 3603 *(cp+1) = 0; 3604 (void) strncat(buf, zc->zc_value, MAXPATHLEN); 3605 error = dmu_objset_hold(buf, FTAG, &fromsnap); 3606 kmem_free(buf, MAXPATHLEN); 3607 if (error) { 3608 dmu_objset_rele(tosnap, FTAG); 3609 return (error); 3610 } 3611 } 3612 3613 fp = getf(zc->zc_cookie); 3614 if (fp == NULL) { 3615 dmu_objset_rele(tosnap, FTAG); 3616 if (fromsnap) 3617 dmu_objset_rele(fromsnap, FTAG); 3618 return (EBADF); 3619 } 3620 3621 off = fp->f_offset; 3622 error = dmu_sendbackup(tosnap, fromsnap, zc->zc_obj, fp->f_vnode, &off); 3623 3624 if (VOP_SEEK(fp->f_vnode, fp->f_offset, &off, NULL) == 0) 3625 fp->f_offset = off; 3626 releasef(zc->zc_cookie); 3627 if (fromsnap) 3628 dmu_objset_rele(fromsnap, FTAG); 3629 dmu_objset_rele(tosnap, FTAG); 3630 return (error); 3631 } 3632 3633 static int 3634 zfs_ioc_inject_fault(zfs_cmd_t *zc) 3635 { 3636 int id, error; 3637 3638 error = zio_inject_fault(zc->zc_name, (int)zc->zc_guid, &id, 3639 &zc->zc_inject_record); 3640 3641 if (error == 0) 3642 zc->zc_guid = (uint64_t)id; 3643 3644 return (error); 3645 } 3646 3647 static int 3648 zfs_ioc_clear_fault(zfs_cmd_t *zc) 3649 { 3650 return (zio_clear_fault((int)zc->zc_guid)); 3651 } 3652 3653 static int 3654 zfs_ioc_inject_list_next(zfs_cmd_t *zc) 3655 { 3656 int id = (int)zc->zc_guid; 3657 int error; 3658 3659 error = zio_inject_list_next(&id, zc->zc_name, sizeof (zc->zc_name), 3660 &zc->zc_inject_record); 3661 3662 zc->zc_guid = id; 3663 3664 return (error); 3665 } 3666 3667 static int 3668 zfs_ioc_error_log(zfs_cmd_t *zc) 3669 { 3670 spa_t *spa; 3671 int error; 3672 size_t count = (size_t)zc->zc_nvlist_dst_size; 3673 3674 if ((error = spa_open(zc->zc_name, &spa, FTAG)) != 0) 3675 return (error); 3676 3677 error = spa_get_errlog(spa, (void *)(uintptr_t)zc->zc_nvlist_dst, 3678 &count); 3679 if (error == 0) 3680 zc->zc_nvlist_dst_size = count; 3681 else 3682 zc->zc_nvlist_dst_size = spa_get_errlog_size(spa); 3683 3684 spa_close(spa, FTAG); 3685 3686 return (error); 3687 } 3688 3689 static int 3690 zfs_ioc_clear(zfs_cmd_t *zc) 3691 { 3692 spa_t *spa; 3693 vdev_t *vd; 3694 int error; 3695 3696 /* 3697 * On zpool clear we also fix up missing slogs 3698 */ 3699 mutex_enter(&spa_namespace_lock); 3700 spa = spa_lookup(zc->zc_name); 3701 if (spa == NULL) { 3702 mutex_exit(&spa_namespace_lock); 3703 return (EIO); 3704 } 3705 if (spa_get_log_state(spa) == SPA_LOG_MISSING) { 3706 /* we need to let spa_open/spa_load clear the chains */ 3707 spa_set_log_state(spa, SPA_LOG_CLEAR); 3708 } 3709 spa->spa_last_open_failed = 0; 3710 mutex_exit(&spa_namespace_lock); 3711 3712 if (zc->zc_cookie & ZPOOL_NO_REWIND) { 3713 error = spa_open(zc->zc_name, &spa, FTAG); 3714 } else { 3715 nvlist_t *policy; 3716 nvlist_t *config = NULL; 3717 3718 if (zc->zc_nvlist_src == NULL) 3719 return (EINVAL); 3720 3721 if ((error = get_nvlist(zc->zc_nvlist_src, 3722 zc->zc_nvlist_src_size, zc->zc_iflags, &policy)) == 0) { 3723 error = spa_open_rewind(zc->zc_name, &spa, FTAG, 3724 policy, &config); 3725 if (config != NULL) { 3726 (void) put_nvlist(zc, config); 3727 nvlist_free(config); 3728 } 3729 nvlist_free(policy); 3730 } 3731 } 3732 3733 if (error) 3734 return (error); 3735 3736 spa_vdev_state_enter(spa, SCL_NONE); 3737 3738 if (zc->zc_guid == 0) { 3739 vd = NULL; 3740 } else { 3741 vd = spa_lookup_by_guid(spa, zc->zc_guid, B_TRUE); 3742 if (vd == NULL) { 3743 (void) spa_vdev_state_exit(spa, NULL, ENODEV); 3744 spa_close(spa, FTAG); 3745 return (ENODEV); 3746 } 3747 } 3748 3749 vdev_clear(spa, vd); 3750 3751 (void) spa_vdev_state_exit(spa, NULL, 0); 3752 3753 /* 3754 * Resume any suspended I/Os. 3755 */ 3756 if (zio_resume(spa) != 0) 3757 error = EIO; 3758 3759 spa_close(spa, FTAG); 3760 3761 return (error); 3762 } 3763 3764 /* 3765 * inputs: 3766 * zc_name name of filesystem 3767 * zc_value name of origin snapshot 3768 * 3769 * outputs: 3770 * zc_string name of conflicting snapshot, if there is one 3771 */ 3772 static int 3773 zfs_ioc_promote(zfs_cmd_t *zc) 3774 { 3775 char *cp; 3776 3777 /* 3778 * We don't need to unmount *all* the origin fs's snapshots, but 3779 * it's easier. 3780 */ 3781 cp = strchr(zc->zc_value, '@'); 3782 if (cp) 3783 *cp = '\0'; 3784 (void) dmu_objset_find(zc->zc_value, 3785 zfs_unmount_snap, NULL, DS_FIND_SNAPSHOTS); 3786 return (dsl_dataset_promote(zc->zc_name, zc->zc_string)); 3787 } 3788 3789 /* 3790 * Retrieve a single {user|group}{used|quota}@... property. 3791 * 3792 * inputs: 3793 * zc_name name of filesystem 3794 * zc_objset_type zfs_userquota_prop_t 3795 * zc_value domain name (eg. "S-1-234-567-89") 3796 * zc_guid RID/UID/GID 3797 * 3798 * outputs: 3799 * zc_cookie property value 3800 */ 3801 static int 3802 zfs_ioc_userspace_one(zfs_cmd_t *zc) 3803 { 3804 zfsvfs_t *zfsvfs; 3805 int error; 3806 3807 if (zc->zc_objset_type >= ZFS_NUM_USERQUOTA_PROPS) 3808 return (EINVAL); 3809 3810 error = zfsvfs_hold(zc->zc_name, FTAG, &zfsvfs, B_FALSE); 3811 if (error) 3812 return (error); 3813 3814 error = zfs_userspace_one(zfsvfs, 3815 zc->zc_objset_type, zc->zc_value, zc->zc_guid, &zc->zc_cookie); 3816 zfsvfs_rele(zfsvfs, FTAG); 3817 3818 return (error); 3819 } 3820 3821 /* 3822 * inputs: 3823 * zc_name name of filesystem 3824 * zc_cookie zap cursor 3825 * zc_objset_type zfs_userquota_prop_t 3826 * zc_nvlist_dst[_size] buffer to fill (not really an nvlist) 3827 * 3828 * outputs: 3829 * zc_nvlist_dst[_size] data buffer (array of zfs_useracct_t) 3830 * zc_cookie zap cursor 3831 */ 3832 static int 3833 zfs_ioc_userspace_many(zfs_cmd_t *zc) 3834 { 3835 zfsvfs_t *zfsvfs; 3836 int bufsize = zc->zc_nvlist_dst_size; 3837 3838 if (bufsize <= 0) 3839 return (ENOMEM); 3840 3841 int error = zfsvfs_hold(zc->zc_name, FTAG, &zfsvfs, B_FALSE); 3842 if (error) 3843 return (error); 3844 3845 void *buf = kmem_alloc(bufsize, KM_SLEEP); 3846 3847 error = zfs_userspace_many(zfsvfs, zc->zc_objset_type, &zc->zc_cookie, 3848 buf, &zc->zc_nvlist_dst_size); 3849 3850 if (error == 0) { 3851 error = xcopyout(buf, 3852 (void *)(uintptr_t)zc->zc_nvlist_dst, 3853 zc->zc_nvlist_dst_size); 3854 } 3855 kmem_free(buf, bufsize); 3856 zfsvfs_rele(zfsvfs, FTAG); 3857 3858 return (error); 3859 } 3860 3861 /* 3862 * inputs: 3863 * zc_name name of filesystem 3864 * 3865 * outputs: 3866 * none 3867 */ 3868 static int 3869 zfs_ioc_userspace_upgrade(zfs_cmd_t *zc) 3870 { 3871 objset_t *os; 3872 int error = 0; 3873 zfsvfs_t *zfsvfs; 3874 3875 if (getzfsvfs(zc->zc_name, &zfsvfs) == 0) { 3876 if (!dmu_objset_userused_enabled(zfsvfs->z_os)) { 3877 /* 3878 * If userused is not enabled, it may be because the 3879 * objset needs to be closed & reopened (to grow the 3880 * objset_phys_t). Suspend/resume the fs will do that. 3881 */ 3882 error = zfs_suspend_fs(zfsvfs); 3883 if (error == 0) 3884 error = zfs_resume_fs(zfsvfs, zc->zc_name); 3885 } 3886 if (error == 0) 3887 error = dmu_objset_userspace_upgrade(zfsvfs->z_os); 3888 VFS_RELE(zfsvfs->z_vfs); 3889 } else { 3890 /* XXX kind of reading contents without owning */ 3891 error = dmu_objset_hold(zc->zc_name, FTAG, &os); 3892 if (error) 3893 return (error); 3894 3895 error = dmu_objset_userspace_upgrade(os); 3896 dmu_objset_rele(os, FTAG); 3897 } 3898 3899 return (error); 3900 } 3901 3902 /* 3903 * We don't want to have a hard dependency 3904 * against some special symbols in sharefs 3905 * nfs, and smbsrv. Determine them if needed when 3906 * the first file system is shared. 3907 * Neither sharefs, nfs or smbsrv are unloadable modules. 3908 */ 3909 int (*znfsexport_fs)(void *arg); 3910 int (*zshare_fs)(enum sharefs_sys_op, share_t *, uint32_t); 3911 int (*zsmbexport_fs)(void *arg, boolean_t add_share); 3912 3913 int zfs_nfsshare_inited; 3914 int zfs_smbshare_inited; 3915 3916 ddi_modhandle_t nfs_mod; 3917 ddi_modhandle_t sharefs_mod; 3918 ddi_modhandle_t smbsrv_mod; 3919 kmutex_t zfs_share_lock; 3920 3921 static int 3922 zfs_init_sharefs() 3923 { 3924 int error; 3925 3926 ASSERT(MUTEX_HELD(&zfs_share_lock)); 3927 /* Both NFS and SMB shares also require sharetab support. */ 3928 if (sharefs_mod == NULL && ((sharefs_mod = 3929 ddi_modopen("fs/sharefs", 3930 KRTLD_MODE_FIRST, &error)) == NULL)) { 3931 return (ENOSYS); 3932 } 3933 if (zshare_fs == NULL && ((zshare_fs = 3934 (int (*)(enum sharefs_sys_op, share_t *, uint32_t)) 3935 ddi_modsym(sharefs_mod, "sharefs_impl", &error)) == NULL)) { 3936 return (ENOSYS); 3937 } 3938 return (0); 3939 } 3940 3941 static int 3942 zfs_ioc_share(zfs_cmd_t *zc) 3943 { 3944 int error; 3945 int opcode; 3946 3947 switch (zc->zc_share.z_sharetype) { 3948 case ZFS_SHARE_NFS: 3949 case ZFS_UNSHARE_NFS: 3950 if (zfs_nfsshare_inited == 0) { 3951 mutex_enter(&zfs_share_lock); 3952 if (nfs_mod == NULL && ((nfs_mod = ddi_modopen("fs/nfs", 3953 KRTLD_MODE_FIRST, &error)) == NULL)) { 3954 mutex_exit(&zfs_share_lock); 3955 return (ENOSYS); 3956 } 3957 if (znfsexport_fs == NULL && 3958 ((znfsexport_fs = (int (*)(void *)) 3959 ddi_modsym(nfs_mod, 3960 "nfs_export", &error)) == NULL)) { 3961 mutex_exit(&zfs_share_lock); 3962 return (ENOSYS); 3963 } 3964 error = zfs_init_sharefs(); 3965 if (error) { 3966 mutex_exit(&zfs_share_lock); 3967 return (ENOSYS); 3968 } 3969 zfs_nfsshare_inited = 1; 3970 mutex_exit(&zfs_share_lock); 3971 } 3972 break; 3973 case ZFS_SHARE_SMB: 3974 case ZFS_UNSHARE_SMB: 3975 if (zfs_smbshare_inited == 0) { 3976 mutex_enter(&zfs_share_lock); 3977 if (smbsrv_mod == NULL && ((smbsrv_mod = 3978 ddi_modopen("drv/smbsrv", 3979 KRTLD_MODE_FIRST, &error)) == NULL)) { 3980 mutex_exit(&zfs_share_lock); 3981 return (ENOSYS); 3982 } 3983 if (zsmbexport_fs == NULL && ((zsmbexport_fs = 3984 (int (*)(void *, boolean_t))ddi_modsym(smbsrv_mod, 3985 "smb_server_share", &error)) == NULL)) { 3986 mutex_exit(&zfs_share_lock); 3987 return (ENOSYS); 3988 } 3989 error = zfs_init_sharefs(); 3990 if (error) { 3991 mutex_exit(&zfs_share_lock); 3992 return (ENOSYS); 3993 } 3994 zfs_smbshare_inited = 1; 3995 mutex_exit(&zfs_share_lock); 3996 } 3997 break; 3998 default: 3999 return (EINVAL); 4000 } 4001 4002 switch (zc->zc_share.z_sharetype) { 4003 case ZFS_SHARE_NFS: 4004 case ZFS_UNSHARE_NFS: 4005 if (error = 4006 znfsexport_fs((void *) 4007 (uintptr_t)zc->zc_share.z_exportdata)) 4008 return (error); 4009 break; 4010 case ZFS_SHARE_SMB: 4011 case ZFS_UNSHARE_SMB: 4012 if (error = zsmbexport_fs((void *) 4013 (uintptr_t)zc->zc_share.z_exportdata, 4014 zc->zc_share.z_sharetype == ZFS_SHARE_SMB ? 4015 B_TRUE: B_FALSE)) { 4016 return (error); 4017 } 4018 break; 4019 } 4020 4021 opcode = (zc->zc_share.z_sharetype == ZFS_SHARE_NFS || 4022 zc->zc_share.z_sharetype == ZFS_SHARE_SMB) ? 4023 SHAREFS_ADD : SHAREFS_REMOVE; 4024 4025 /* 4026 * Add or remove share from sharetab 4027 */ 4028 error = zshare_fs(opcode, 4029 (void *)(uintptr_t)zc->zc_share.z_sharedata, 4030 zc->zc_share.z_sharemax); 4031 4032 return (error); 4033 4034 } 4035 4036 ace_t full_access[] = { 4037 {(uid_t)-1, ACE_ALL_PERMS, ACE_EVERYONE, 0} 4038 }; 4039 4040 /* 4041 * Remove all ACL files in shares dir 4042 */ 4043 static int 4044 zfs_smb_acl_purge(znode_t *dzp) 4045 { 4046 zap_cursor_t zc; 4047 zap_attribute_t zap; 4048 zfsvfs_t *zfsvfs = dzp->z_zfsvfs; 4049 int error; 4050 4051 for (zap_cursor_init(&zc, zfsvfs->z_os, dzp->z_id); 4052 (error = zap_cursor_retrieve(&zc, &zap)) == 0; 4053 zap_cursor_advance(&zc)) { 4054 if ((error = VOP_REMOVE(ZTOV(dzp), zap.za_name, kcred, 4055 NULL, 0)) != 0) 4056 break; 4057 } 4058 zap_cursor_fini(&zc); 4059 return (error); 4060 } 4061 4062 static int 4063 zfs_ioc_smb_acl(zfs_cmd_t *zc) 4064 { 4065 vnode_t *vp; 4066 znode_t *dzp; 4067 vnode_t *resourcevp = NULL; 4068 znode_t *sharedir; 4069 zfsvfs_t *zfsvfs; 4070 nvlist_t *nvlist; 4071 char *src, *target; 4072 vattr_t vattr; 4073 vsecattr_t vsec; 4074 int error = 0; 4075 4076 if ((error = lookupname(zc->zc_value, UIO_SYSSPACE, 4077 NO_FOLLOW, NULL, &vp)) != 0) 4078 return (error); 4079 4080 /* Now make sure mntpnt and dataset are ZFS */ 4081 4082 if (vp->v_vfsp->vfs_fstype != zfsfstype || 4083 (strcmp((char *)refstr_value(vp->v_vfsp->vfs_resource), 4084 zc->zc_name) != 0)) { 4085 VN_RELE(vp); 4086 return (EINVAL); 4087 } 4088 4089 dzp = VTOZ(vp); 4090 zfsvfs = dzp->z_zfsvfs; 4091 ZFS_ENTER(zfsvfs); 4092 4093 /* 4094 * Create share dir if its missing. 4095 */ 4096 mutex_enter(&zfsvfs->z_lock); 4097 if (zfsvfs->z_shares_dir == 0) { 4098 dmu_tx_t *tx; 4099 4100 tx = dmu_tx_create(zfsvfs->z_os); 4101 dmu_tx_hold_zap(tx, MASTER_NODE_OBJ, TRUE, 4102 ZFS_SHARES_DIR); 4103 dmu_tx_hold_zap(tx, DMU_NEW_OBJECT, FALSE, NULL); 4104 error = dmu_tx_assign(tx, TXG_WAIT); 4105 if (error) { 4106 dmu_tx_abort(tx); 4107 } else { 4108 error = zfs_create_share_dir(zfsvfs, tx); 4109 dmu_tx_commit(tx); 4110 } 4111 if (error) { 4112 mutex_exit(&zfsvfs->z_lock); 4113 VN_RELE(vp); 4114 ZFS_EXIT(zfsvfs); 4115 return (error); 4116 } 4117 } 4118 mutex_exit(&zfsvfs->z_lock); 4119 4120 ASSERT(zfsvfs->z_shares_dir); 4121 if ((error = zfs_zget(zfsvfs, zfsvfs->z_shares_dir, &sharedir)) != 0) { 4122 VN_RELE(vp); 4123 ZFS_EXIT(zfsvfs); 4124 return (error); 4125 } 4126 4127 switch (zc->zc_cookie) { 4128 case ZFS_SMB_ACL_ADD: 4129 vattr.va_mask = AT_MODE|AT_UID|AT_GID|AT_TYPE; 4130 vattr.va_type = VREG; 4131 vattr.va_mode = S_IFREG|0777; 4132 vattr.va_uid = 0; 4133 vattr.va_gid = 0; 4134 4135 vsec.vsa_mask = VSA_ACE; 4136 vsec.vsa_aclentp = &full_access; 4137 vsec.vsa_aclentsz = sizeof (full_access); 4138 vsec.vsa_aclcnt = 1; 4139 4140 error = VOP_CREATE(ZTOV(sharedir), zc->zc_string, 4141 &vattr, EXCL, 0, &resourcevp, kcred, 0, NULL, &vsec); 4142 if (resourcevp) 4143 VN_RELE(resourcevp); 4144 break; 4145 4146 case ZFS_SMB_ACL_REMOVE: 4147 error = VOP_REMOVE(ZTOV(sharedir), zc->zc_string, kcred, 4148 NULL, 0); 4149 break; 4150 4151 case ZFS_SMB_ACL_RENAME: 4152 if ((error = get_nvlist(zc->zc_nvlist_src, 4153 zc->zc_nvlist_src_size, zc->zc_iflags, &nvlist)) != 0) { 4154 VN_RELE(vp); 4155 ZFS_EXIT(zfsvfs); 4156 return (error); 4157 } 4158 if (nvlist_lookup_string(nvlist, ZFS_SMB_ACL_SRC, &src) || 4159 nvlist_lookup_string(nvlist, ZFS_SMB_ACL_TARGET, 4160 &target)) { 4161 VN_RELE(vp); 4162 VN_RELE(ZTOV(sharedir)); 4163 ZFS_EXIT(zfsvfs); 4164 nvlist_free(nvlist); 4165 return (error); 4166 } 4167 error = VOP_RENAME(ZTOV(sharedir), src, ZTOV(sharedir), target, 4168 kcred, NULL, 0); 4169 nvlist_free(nvlist); 4170 break; 4171 4172 case ZFS_SMB_ACL_PURGE: 4173 error = zfs_smb_acl_purge(sharedir); 4174 break; 4175 4176 default: 4177 error = EINVAL; 4178 break; 4179 } 4180 4181 VN_RELE(vp); 4182 VN_RELE(ZTOV(sharedir)); 4183 4184 ZFS_EXIT(zfsvfs); 4185 4186 return (error); 4187 } 4188 4189 /* 4190 * inputs: 4191 * zc_name name of filesystem 4192 * zc_value short name of snap 4193 * zc_string user-supplied tag for this hold 4194 * zc_cookie recursive flag 4195 * zc_temphold set if hold is temporary 4196 * zc_cleanup_fd cleanup-on-exit file descriptor for calling process 4197 * 4198 * outputs: none 4199 */ 4200 static int 4201 zfs_ioc_hold(zfs_cmd_t *zc) 4202 { 4203 boolean_t recursive = zc->zc_cookie; 4204 4205 if (snapshot_namecheck(zc->zc_value, NULL, NULL) != 0) 4206 return (EINVAL); 4207 4208 return (dsl_dataset_user_hold(zc->zc_name, zc->zc_value, 4209 zc->zc_string, recursive, zc->zc_temphold, zc->zc_cleanup_fd)); 4210 } 4211 4212 /* 4213 * inputs: 4214 * zc_name name of dataset from which we're releasing a user hold 4215 * zc_value short name of snap 4216 * zc_string user-supplied tag for this hold 4217 * zc_cookie recursive flag 4218 * 4219 * outputs: none 4220 */ 4221 static int 4222 zfs_ioc_release(zfs_cmd_t *zc) 4223 { 4224 boolean_t recursive = zc->zc_cookie; 4225 4226 if (snapshot_namecheck(zc->zc_value, NULL, NULL) != 0) 4227 return (EINVAL); 4228 4229 return (dsl_dataset_user_release(zc->zc_name, zc->zc_value, 4230 zc->zc_string, recursive)); 4231 } 4232 4233 /* 4234 * inputs: 4235 * zc_name name of filesystem 4236 * 4237 * outputs: 4238 * zc_nvlist_src{_size} nvlist of snapshot holds 4239 */ 4240 static int 4241 zfs_ioc_get_holds(zfs_cmd_t *zc) 4242 { 4243 nvlist_t *nvp; 4244 int error; 4245 4246 if ((error = dsl_dataset_get_holds(zc->zc_name, &nvp)) == 0) { 4247 error = put_nvlist(zc, nvp); 4248 nvlist_free(nvp); 4249 } 4250 4251 return (error); 4252 } 4253 4254 /* 4255 * pool create, destroy, and export don't log the history as part of 4256 * zfsdev_ioctl, but rather zfs_ioc_pool_create, and zfs_ioc_pool_export 4257 * do the logging of those commands. 4258 */ 4259 static zfs_ioc_vec_t zfs_ioc_vec[] = { 4260 { zfs_ioc_pool_create, zfs_secpolicy_config, POOL_NAME, B_FALSE, 4261 B_FALSE }, 4262 { zfs_ioc_pool_destroy, zfs_secpolicy_config, POOL_NAME, B_FALSE, 4263 B_FALSE }, 4264 { zfs_ioc_pool_import, zfs_secpolicy_config, POOL_NAME, B_TRUE, 4265 B_FALSE }, 4266 { zfs_ioc_pool_export, zfs_secpolicy_config, POOL_NAME, B_FALSE, 4267 B_FALSE }, 4268 { zfs_ioc_pool_configs, zfs_secpolicy_none, NO_NAME, B_FALSE, 4269 B_FALSE }, 4270 { zfs_ioc_pool_stats, zfs_secpolicy_read, POOL_NAME, B_FALSE, 4271 B_FALSE }, 4272 { zfs_ioc_pool_tryimport, zfs_secpolicy_config, NO_NAME, B_FALSE, 4273 B_FALSE }, 4274 { zfs_ioc_pool_scan, zfs_secpolicy_config, POOL_NAME, B_TRUE, 4275 B_TRUE }, 4276 { zfs_ioc_pool_freeze, zfs_secpolicy_config, NO_NAME, B_FALSE, 4277 B_FALSE }, 4278 { zfs_ioc_pool_upgrade, zfs_secpolicy_config, POOL_NAME, B_TRUE, 4279 B_TRUE }, 4280 { zfs_ioc_pool_get_history, zfs_secpolicy_config, POOL_NAME, B_FALSE, 4281 B_FALSE }, 4282 { zfs_ioc_vdev_add, zfs_secpolicy_config, POOL_NAME, B_TRUE, 4283 B_TRUE }, 4284 { zfs_ioc_vdev_remove, zfs_secpolicy_config, POOL_NAME, B_TRUE, 4285 B_TRUE }, 4286 { zfs_ioc_vdev_set_state, zfs_secpolicy_config, POOL_NAME, B_TRUE, 4287 B_FALSE }, 4288 { zfs_ioc_vdev_attach, zfs_secpolicy_config, POOL_NAME, B_TRUE, 4289 B_TRUE }, 4290 { zfs_ioc_vdev_detach, zfs_secpolicy_config, POOL_NAME, B_TRUE, 4291 B_TRUE }, 4292 { zfs_ioc_vdev_setpath, zfs_secpolicy_config, POOL_NAME, B_FALSE, 4293 B_TRUE }, 4294 { zfs_ioc_vdev_setfru, zfs_secpolicy_config, POOL_NAME, B_FALSE, 4295 B_TRUE }, 4296 { zfs_ioc_objset_stats, zfs_secpolicy_read, DATASET_NAME, B_FALSE, 4297 B_TRUE }, 4298 { zfs_ioc_objset_zplprops, zfs_secpolicy_read, DATASET_NAME, B_FALSE, 4299 B_FALSE }, 4300 { zfs_ioc_dataset_list_next, zfs_secpolicy_read, DATASET_NAME, B_FALSE, 4301 B_TRUE }, 4302 { zfs_ioc_snapshot_list_next, zfs_secpolicy_read, DATASET_NAME, B_FALSE, 4303 B_TRUE }, 4304 { zfs_ioc_set_prop, zfs_secpolicy_none, DATASET_NAME, B_TRUE, B_TRUE }, 4305 { zfs_ioc_create, zfs_secpolicy_create, DATASET_NAME, B_TRUE, B_TRUE }, 4306 { zfs_ioc_destroy, zfs_secpolicy_destroy, DATASET_NAME, B_TRUE, 4307 B_TRUE}, 4308 { zfs_ioc_rollback, zfs_secpolicy_rollback, DATASET_NAME, B_TRUE, 4309 B_TRUE }, 4310 { zfs_ioc_rename, zfs_secpolicy_rename, DATASET_NAME, B_TRUE, B_TRUE }, 4311 { zfs_ioc_recv, zfs_secpolicy_receive, DATASET_NAME, B_TRUE, B_TRUE }, 4312 { zfs_ioc_send, zfs_secpolicy_send, DATASET_NAME, B_TRUE, B_FALSE }, 4313 { zfs_ioc_inject_fault, zfs_secpolicy_inject, NO_NAME, B_FALSE, 4314 B_FALSE }, 4315 { zfs_ioc_clear_fault, zfs_secpolicy_inject, NO_NAME, B_FALSE, 4316 B_FALSE }, 4317 { zfs_ioc_inject_list_next, zfs_secpolicy_inject, NO_NAME, B_FALSE, 4318 B_FALSE }, 4319 { zfs_ioc_error_log, zfs_secpolicy_inject, POOL_NAME, B_FALSE, 4320 B_FALSE }, 4321 { zfs_ioc_clear, zfs_secpolicy_config, POOL_NAME, B_TRUE, B_FALSE }, 4322 { zfs_ioc_promote, zfs_secpolicy_promote, DATASET_NAME, B_TRUE, 4323 B_TRUE }, 4324 { zfs_ioc_destroy_snaps, zfs_secpolicy_destroy_snaps, DATASET_NAME, 4325 B_TRUE, B_TRUE }, 4326 { zfs_ioc_snapshot, zfs_secpolicy_snapshot, DATASET_NAME, B_TRUE, 4327 B_TRUE }, 4328 { zfs_ioc_dsobj_to_dsname, zfs_secpolicy_config, POOL_NAME, B_FALSE, 4329 B_FALSE }, 4330 { zfs_ioc_obj_to_path, zfs_secpolicy_config, DATASET_NAME, B_FALSE, 4331 B_TRUE }, 4332 { zfs_ioc_pool_set_props, zfs_secpolicy_config, POOL_NAME, B_TRUE, 4333 B_TRUE }, 4334 { zfs_ioc_pool_get_props, zfs_secpolicy_read, POOL_NAME, B_FALSE, 4335 B_FALSE }, 4336 { zfs_ioc_set_fsacl, zfs_secpolicy_fsacl, DATASET_NAME, B_TRUE, 4337 B_TRUE }, 4338 { zfs_ioc_get_fsacl, zfs_secpolicy_read, DATASET_NAME, B_FALSE, 4339 B_FALSE }, 4340 { zfs_ioc_share, zfs_secpolicy_share, DATASET_NAME, B_FALSE, B_FALSE }, 4341 { zfs_ioc_inherit_prop, zfs_secpolicy_inherit, DATASET_NAME, B_TRUE, 4342 B_TRUE }, 4343 { zfs_ioc_smb_acl, zfs_secpolicy_smb_acl, DATASET_NAME, B_FALSE, 4344 B_FALSE }, 4345 { zfs_ioc_userspace_one, zfs_secpolicy_userspace_one, 4346 DATASET_NAME, B_FALSE, B_FALSE }, 4347 { zfs_ioc_userspace_many, zfs_secpolicy_userspace_many, 4348 DATASET_NAME, B_FALSE, B_FALSE }, 4349 { zfs_ioc_userspace_upgrade, zfs_secpolicy_userspace_upgrade, 4350 DATASET_NAME, B_FALSE, B_TRUE }, 4351 { zfs_ioc_hold, zfs_secpolicy_hold, DATASET_NAME, B_TRUE, B_TRUE }, 4352 { zfs_ioc_release, zfs_secpolicy_release, DATASET_NAME, B_TRUE, 4353 B_TRUE }, 4354 { zfs_ioc_get_holds, zfs_secpolicy_read, DATASET_NAME, B_FALSE, 4355 B_TRUE }, 4356 { zfs_ioc_objset_recvd_props, zfs_secpolicy_read, DATASET_NAME, B_FALSE, 4357 B_FALSE }, 4358 { zfs_ioc_vdev_split, zfs_secpolicy_config, POOL_NAME, B_TRUE, 4359 B_TRUE } 4360 }; 4361 4362 int 4363 pool_status_check(const char *name, zfs_ioc_namecheck_t type) 4364 { 4365 spa_t *spa; 4366 int error; 4367 4368 ASSERT(type == POOL_NAME || type == DATASET_NAME); 4369 4370 error = spa_open(name, &spa, FTAG); 4371 if (error == 0) { 4372 if (spa_suspended(spa)) 4373 error = EAGAIN; 4374 spa_close(spa, FTAG); 4375 } 4376 return (error); 4377 } 4378 4379 /* 4380 * Find a free minor number. 4381 */ 4382 minor_t 4383 zfsdev_minor_alloc(void) 4384 { 4385 static minor_t last_minor; 4386 minor_t m; 4387 4388 ASSERT(MUTEX_HELD(&zfsdev_state_lock)); 4389 4390 for (m = last_minor + 1; m != last_minor; m++) { 4391 if (m > ZFSDEV_MAX_MINOR) 4392 m = 1; 4393 if (ddi_get_soft_state(zfsdev_state, m) == NULL) { 4394 last_minor = m; 4395 return (m); 4396 } 4397 } 4398 4399 return (0); 4400 } 4401 4402 static int 4403 zfs_ctldev_init(dev_t *devp) 4404 { 4405 minor_t minor; 4406 zfs_soft_state_t *zs; 4407 4408 ASSERT(MUTEX_HELD(&zfsdev_state_lock)); 4409 ASSERT(getminor(*devp) == 0); 4410 4411 minor = zfsdev_minor_alloc(); 4412 if (minor == 0) 4413 return (ENXIO); 4414 4415 if (ddi_soft_state_zalloc(zfsdev_state, minor) != DDI_SUCCESS) 4416 return (EAGAIN); 4417 4418 *devp = makedevice(getemajor(*devp), minor); 4419 4420 zs = ddi_get_soft_state(zfsdev_state, minor); 4421 zs->zss_type = ZSST_CTLDEV; 4422 zfs_onexit_init((zfs_onexit_t **)&zs->zss_data); 4423 4424 return (0); 4425 } 4426 4427 static void 4428 zfs_ctldev_destroy(zfs_onexit_t *zo, minor_t minor) 4429 { 4430 ASSERT(MUTEX_HELD(&zfsdev_state_lock)); 4431 4432 zfs_onexit_destroy(zo); 4433 ddi_soft_state_free(zfsdev_state, minor); 4434 } 4435 4436 void * 4437 zfsdev_get_soft_state(minor_t minor, enum zfs_soft_state_type which) 4438 { 4439 zfs_soft_state_t *zp; 4440 4441 zp = ddi_get_soft_state(zfsdev_state, minor); 4442 if (zp == NULL || zp->zss_type != which) 4443 return (NULL); 4444 4445 return (zp->zss_data); 4446 } 4447 4448 static int 4449 zfsdev_open(dev_t *devp, int flag, int otyp, cred_t *cr) 4450 { 4451 int error = 0; 4452 4453 if (getminor(*devp) != 0) 4454 return (zvol_open(devp, flag, otyp, cr)); 4455 4456 /* This is the control device. Allocate a new minor if requested. */ 4457 if (flag & FEXCL) { 4458 mutex_enter(&zfsdev_state_lock); 4459 error = zfs_ctldev_init(devp); 4460 mutex_exit(&zfsdev_state_lock); 4461 } 4462 4463 return (error); 4464 } 4465 4466 static int 4467 zfsdev_close(dev_t dev, int flag, int otyp, cred_t *cr) 4468 { 4469 zfs_onexit_t *zo; 4470 minor_t minor = getminor(dev); 4471 4472 if (minor == 0) 4473 return (0); 4474 4475 mutex_enter(&zfsdev_state_lock); 4476 zo = zfsdev_get_soft_state(minor, ZSST_CTLDEV); 4477 if (zo == NULL) { 4478 mutex_exit(&zfsdev_state_lock); 4479 return (zvol_close(dev, flag, otyp, cr)); 4480 } 4481 zfs_ctldev_destroy(zo, minor); 4482 mutex_exit(&zfsdev_state_lock); 4483 4484 return (0); 4485 } 4486 4487 static int 4488 zfsdev_ioctl(dev_t dev, int cmd, intptr_t arg, int flag, cred_t *cr, int *rvalp) 4489 { 4490 zfs_cmd_t *zc; 4491 uint_t vec; 4492 int error, rc; 4493 minor_t minor = getminor(dev); 4494 4495 if (minor != 0 && 4496 zfsdev_get_soft_state(minor, ZSST_CTLDEV) == NULL) 4497 return (zvol_ioctl(dev, cmd, arg, flag, cr, rvalp)); 4498 4499 vec = cmd - ZFS_IOC; 4500 ASSERT3U(getmajor(dev), ==, ddi_driver_major(zfs_dip)); 4501 4502 if (vec >= sizeof (zfs_ioc_vec) / sizeof (zfs_ioc_vec[0])) 4503 return (EINVAL); 4504 4505 zc = kmem_zalloc(sizeof (zfs_cmd_t), KM_SLEEP); 4506 4507 error = ddi_copyin((void *)arg, zc, sizeof (zfs_cmd_t), flag); 4508 if (error != 0) 4509 error = EFAULT; 4510 4511 if ((error == 0) && !(flag & FKIOCTL)) 4512 error = zfs_ioc_vec[vec].zvec_secpolicy(zc, cr); 4513 4514 /* 4515 * Ensure that all pool/dataset names are valid before we pass down to 4516 * the lower layers. 4517 */ 4518 if (error == 0) { 4519 zc->zc_name[sizeof (zc->zc_name) - 1] = '\0'; 4520 zc->zc_iflags = flag & FKIOCTL; 4521 switch (zfs_ioc_vec[vec].zvec_namecheck) { 4522 case POOL_NAME: 4523 if (pool_namecheck(zc->zc_name, NULL, NULL) != 0) 4524 error = EINVAL; 4525 if (zfs_ioc_vec[vec].zvec_pool_check) 4526 error = pool_status_check(zc->zc_name, 4527 zfs_ioc_vec[vec].zvec_namecheck); 4528 break; 4529 4530 case DATASET_NAME: 4531 if (dataset_namecheck(zc->zc_name, NULL, NULL) != 0) 4532 error = EINVAL; 4533 if (zfs_ioc_vec[vec].zvec_pool_check) 4534 error = pool_status_check(zc->zc_name, 4535 zfs_ioc_vec[vec].zvec_namecheck); 4536 break; 4537 4538 case NO_NAME: 4539 break; 4540 } 4541 } 4542 4543 if (error == 0) 4544 error = zfs_ioc_vec[vec].zvec_func(zc); 4545 4546 rc = ddi_copyout(zc, (void *)arg, sizeof (zfs_cmd_t), flag); 4547 if (error == 0) { 4548 if (rc != 0) 4549 error = EFAULT; 4550 if (zfs_ioc_vec[vec].zvec_his_log) 4551 zfs_log_history(zc); 4552 } 4553 4554 kmem_free(zc, sizeof (zfs_cmd_t)); 4555 return (error); 4556 } 4557 4558 static int 4559 zfs_attach(dev_info_t *dip, ddi_attach_cmd_t cmd) 4560 { 4561 if (cmd != DDI_ATTACH) 4562 return (DDI_FAILURE); 4563 4564 if (ddi_create_minor_node(dip, "zfs", S_IFCHR, 0, 4565 DDI_PSEUDO, 0) == DDI_FAILURE) 4566 return (DDI_FAILURE); 4567 4568 zfs_dip = dip; 4569 4570 ddi_report_dev(dip); 4571 4572 return (DDI_SUCCESS); 4573 } 4574 4575 static int 4576 zfs_detach(dev_info_t *dip, ddi_detach_cmd_t cmd) 4577 { 4578 if (spa_busy() || zfs_busy() || zvol_busy()) 4579 return (DDI_FAILURE); 4580 4581 if (cmd != DDI_DETACH) 4582 return (DDI_FAILURE); 4583 4584 zfs_dip = NULL; 4585 4586 ddi_prop_remove_all(dip); 4587 ddi_remove_minor_node(dip, NULL); 4588 4589 return (DDI_SUCCESS); 4590 } 4591 4592 /*ARGSUSED*/ 4593 static int 4594 zfs_info(dev_info_t *dip, ddi_info_cmd_t infocmd, void *arg, void **result) 4595 { 4596 switch (infocmd) { 4597 case DDI_INFO_DEVT2DEVINFO: 4598 *result = zfs_dip; 4599 return (DDI_SUCCESS); 4600 4601 case DDI_INFO_DEVT2INSTANCE: 4602 *result = (void *)0; 4603 return (DDI_SUCCESS); 4604 } 4605 4606 return (DDI_FAILURE); 4607 } 4608 4609 /* 4610 * OK, so this is a little weird. 4611 * 4612 * /dev/zfs is the control node, i.e. minor 0. 4613 * /dev/zvol/[r]dsk/pool/dataset are the zvols, minor > 0. 4614 * 4615 * /dev/zfs has basically nothing to do except serve up ioctls, 4616 * so most of the standard driver entry points are in zvol.c. 4617 */ 4618 static struct cb_ops zfs_cb_ops = { 4619 zfsdev_open, /* open */ 4620 zfsdev_close, /* close */ 4621 zvol_strategy, /* strategy */ 4622 nodev, /* print */ 4623 zvol_dump, /* dump */ 4624 zvol_read, /* read */ 4625 zvol_write, /* write */ 4626 zfsdev_ioctl, /* ioctl */ 4627 nodev, /* devmap */ 4628 nodev, /* mmap */ 4629 nodev, /* segmap */ 4630 nochpoll, /* poll */ 4631 ddi_prop_op, /* prop_op */ 4632 NULL, /* streamtab */ 4633 D_NEW | D_MP | D_64BIT, /* Driver compatibility flag */ 4634 CB_REV, /* version */ 4635 nodev, /* async read */ 4636 nodev, /* async write */ 4637 }; 4638 4639 static struct dev_ops zfs_dev_ops = { 4640 DEVO_REV, /* version */ 4641 0, /* refcnt */ 4642 zfs_info, /* info */ 4643 nulldev, /* identify */ 4644 nulldev, /* probe */ 4645 zfs_attach, /* attach */ 4646 zfs_detach, /* detach */ 4647 nodev, /* reset */ 4648 &zfs_cb_ops, /* driver operations */ 4649 NULL, /* no bus operations */ 4650 NULL, /* power */ 4651 ddi_quiesce_not_needed, /* quiesce */ 4652 }; 4653 4654 static struct modldrv zfs_modldrv = { 4655 &mod_driverops, 4656 "ZFS storage pool", 4657 &zfs_dev_ops 4658 }; 4659 4660 static struct modlinkage modlinkage = { 4661 MODREV_1, 4662 (void *)&zfs_modlfs, 4663 (void *)&zfs_modldrv, 4664 NULL 4665 }; 4666 4667 4668 uint_t zfs_fsyncer_key; 4669 extern uint_t rrw_tsd_key; 4670 4671 int 4672 _init(void) 4673 { 4674 int error; 4675 4676 spa_init(FREAD | FWRITE); 4677 zfs_init(); 4678 zvol_init(); 4679 4680 if ((error = mod_install(&modlinkage)) != 0) { 4681 zvol_fini(); 4682 zfs_fini(); 4683 spa_fini(); 4684 return (error); 4685 } 4686 4687 tsd_create(&zfs_fsyncer_key, NULL); 4688 tsd_create(&rrw_tsd_key, NULL); 4689 4690 error = ldi_ident_from_mod(&modlinkage, &zfs_li); 4691 ASSERT(error == 0); 4692 mutex_init(&zfs_share_lock, NULL, MUTEX_DEFAULT, NULL); 4693 4694 return (0); 4695 } 4696 4697 int 4698 _fini(void) 4699 { 4700 int error; 4701 4702 if (spa_busy() || zfs_busy() || zvol_busy() || zio_injection_enabled) 4703 return (EBUSY); 4704 4705 if ((error = mod_remove(&modlinkage)) != 0) 4706 return (error); 4707 4708 zvol_fini(); 4709 zfs_fini(); 4710 spa_fini(); 4711 if (zfs_nfsshare_inited) 4712 (void) ddi_modclose(nfs_mod); 4713 if (zfs_smbshare_inited) 4714 (void) ddi_modclose(smbsrv_mod); 4715 if (zfs_nfsshare_inited || zfs_smbshare_inited) 4716 (void) ddi_modclose(sharefs_mod); 4717 4718 tsd_destroy(&zfs_fsyncer_key); 4719 ldi_ident_release(zfs_li); 4720 zfs_li = NULL; 4721 mutex_destroy(&zfs_share_lock); 4722 4723 return (error); 4724 } 4725 4726 int 4727 _info(struct modinfo *modinfop) 4728 { 4729 return (mod_info(&modlinkage, modinfop)); 4730 } 4731