1 /* 2 * CDDL HEADER START 3 * 4 * The contents of this file are subject to the terms of the 5 * Common Development and Distribution License (the "License"). 6 * You may not use this file except in compliance with the License. 7 * 8 * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE 9 * or http://www.opensolaris.org/os/licensing. 10 * See the License for the specific language governing permissions 11 * and limitations under the License. 12 * 13 * When distributing Covered Code, include this CDDL HEADER in each 14 * file and include the License file at usr/src/OPENSOLARIS.LICENSE. 15 * If applicable, add the following below this CDDL HEADER, with the 16 * fields enclosed by brackets "[]" replaced with your own identifying 17 * information: Portions Copyright [yyyy] [name of copyright owner] 18 * 19 * CDDL HEADER END 20 */ 21 /* 22 * Copyright 2009 Sun Microsystems, Inc. All rights reserved. 23 * Use is subject to license terms. 24 */ 25 26 #include <sys/types.h> 27 #include <sys/param.h> 28 #include <sys/errno.h> 29 #include <sys/uio.h> 30 #include <sys/buf.h> 31 #include <sys/modctl.h> 32 #include <sys/open.h> 33 #include <sys/file.h> 34 #include <sys/kmem.h> 35 #include <sys/conf.h> 36 #include <sys/cmn_err.h> 37 #include <sys/stat.h> 38 #include <sys/zfs_ioctl.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/vdev_impl.h> 45 #include <sys/dmu.h> 46 #include <sys/dsl_dir.h> 47 #include <sys/dsl_dataset.h> 48 #include <sys/dsl_prop.h> 49 #include <sys/dsl_deleg.h> 50 #include <sys/dmu_objset.h> 51 #include <sys/ddi.h> 52 #include <sys/sunddi.h> 53 #include <sys/sunldi.h> 54 #include <sys/policy.h> 55 #include <sys/zone.h> 56 #include <sys/nvpair.h> 57 #include <sys/pathname.h> 58 #include <sys/mount.h> 59 #include <sys/sdt.h> 60 #include <sys/fs/zfs.h> 61 #include <sys/zfs_ctldir.h> 62 #include <sys/zfs_dir.h> 63 #include <sys/zvol.h> 64 #include <sharefs/share.h> 65 #include <sys/dmu_objset.h> 66 67 #include "zfs_namecheck.h" 68 #include "zfs_prop.h" 69 #include "zfs_deleg.h" 70 71 extern struct modlfs zfs_modlfs; 72 73 extern void zfs_init(void); 74 extern void zfs_fini(void); 75 76 ldi_ident_t zfs_li = NULL; 77 dev_info_t *zfs_dip; 78 79 typedef int zfs_ioc_func_t(zfs_cmd_t *); 80 typedef int zfs_secpolicy_func_t(zfs_cmd_t *, cred_t *); 81 82 typedef enum { 83 NO_NAME, 84 POOL_NAME, 85 DATASET_NAME 86 } zfs_ioc_namecheck_t; 87 88 typedef struct zfs_ioc_vec { 89 zfs_ioc_func_t *zvec_func; 90 zfs_secpolicy_func_t *zvec_secpolicy; 91 zfs_ioc_namecheck_t zvec_namecheck; 92 boolean_t zvec_his_log; 93 boolean_t zvec_pool_check; 94 } zfs_ioc_vec_t; 95 96 static void clear_props(char *dataset, nvlist_t *props, nvlist_t *newprops); 97 static int zfs_fill_zplprops_root(uint64_t, nvlist_t *, nvlist_t *, 98 boolean_t *); 99 int zfs_set_prop_nvlist(const char *, nvlist_t *); 100 101 /* _NOTE(PRINTFLIKE(4)) - this is printf-like, but lint is too whiney */ 102 void 103 __dprintf(const char *file, const char *func, int line, const char *fmt, ...) 104 { 105 const char *newfile; 106 char buf[256]; 107 va_list adx; 108 109 /* 110 * Get rid of annoying "../common/" prefix to filename. 111 */ 112 newfile = strrchr(file, '/'); 113 if (newfile != NULL) { 114 newfile = newfile + 1; /* Get rid of leading / */ 115 } else { 116 newfile = file; 117 } 118 119 va_start(adx, fmt); 120 (void) vsnprintf(buf, sizeof (buf), fmt, adx); 121 va_end(adx); 122 123 /* 124 * To get this data, use the zfs-dprintf probe as so: 125 * dtrace -q -n 'zfs-dprintf \ 126 * /stringof(arg0) == "dbuf.c"/ \ 127 * {printf("%s: %s", stringof(arg1), stringof(arg3))}' 128 * arg0 = file name 129 * arg1 = function name 130 * arg2 = line number 131 * arg3 = message 132 */ 133 DTRACE_PROBE4(zfs__dprintf, 134 char *, newfile, char *, func, int, line, char *, buf); 135 } 136 137 static void 138 history_str_free(char *buf) 139 { 140 kmem_free(buf, HIS_MAX_RECORD_LEN); 141 } 142 143 static char * 144 history_str_get(zfs_cmd_t *zc) 145 { 146 char *buf; 147 148 if (zc->zc_history == NULL) 149 return (NULL); 150 151 buf = kmem_alloc(HIS_MAX_RECORD_LEN, KM_SLEEP); 152 if (copyinstr((void *)(uintptr_t)zc->zc_history, 153 buf, HIS_MAX_RECORD_LEN, NULL) != 0) { 154 history_str_free(buf); 155 return (NULL); 156 } 157 158 buf[HIS_MAX_RECORD_LEN -1] = '\0'; 159 160 return (buf); 161 } 162 163 /* 164 * Check to see if the named dataset is currently defined as bootable 165 */ 166 static boolean_t 167 zfs_is_bootfs(const char *name) 168 { 169 spa_t *spa; 170 boolean_t ret = B_FALSE; 171 172 if (spa_open(name, &spa, FTAG) == 0) { 173 if (spa->spa_bootfs) { 174 objset_t *os; 175 176 if (dmu_objset_open(name, DMU_OST_ZFS, 177 DS_MODE_USER | DS_MODE_READONLY, &os) == 0) { 178 ret = (dmu_objset_id(os) == spa->spa_bootfs); 179 dmu_objset_close(os); 180 } 181 } 182 spa_close(spa, FTAG); 183 } 184 return (ret); 185 } 186 187 /* 188 * zfs_earlier_version 189 * 190 * Return non-zero if the spa version is less than requested version. 191 */ 192 static int 193 zfs_earlier_version(const char *name, int version) 194 { 195 spa_t *spa; 196 197 if (spa_open(name, &spa, FTAG) == 0) { 198 if (spa_version(spa) < version) { 199 spa_close(spa, FTAG); 200 return (1); 201 } 202 spa_close(spa, FTAG); 203 } 204 return (0); 205 } 206 207 /* 208 * zpl_earlier_version 209 * 210 * Return TRUE if the ZPL version is less than requested version. 211 */ 212 static boolean_t 213 zpl_earlier_version(const char *name, int version) 214 { 215 objset_t *os; 216 boolean_t rc = B_TRUE; 217 218 if (dmu_objset_open(name, DMU_OST_ANY, 219 DS_MODE_USER | DS_MODE_READONLY, &os) == 0) { 220 uint64_t zplversion; 221 222 if (zfs_get_zplprop(os, ZFS_PROP_VERSION, &zplversion) == 0) 223 rc = zplversion < version; 224 dmu_objset_close(os); 225 } 226 return (rc); 227 } 228 229 static void 230 zfs_log_history(zfs_cmd_t *zc) 231 { 232 spa_t *spa; 233 char *buf; 234 235 if ((buf = history_str_get(zc)) == NULL) 236 return; 237 238 if (spa_open(zc->zc_name, &spa, FTAG) == 0) { 239 if (spa_version(spa) >= SPA_VERSION_ZPOOL_HISTORY) 240 (void) spa_history_log(spa, buf, LOG_CMD_NORMAL); 241 spa_close(spa, FTAG); 242 } 243 history_str_free(buf); 244 } 245 246 /* 247 * Policy for top-level read operations (list pools). Requires no privileges, 248 * and can be used in the local zone, as there is no associated dataset. 249 */ 250 /* ARGSUSED */ 251 static int 252 zfs_secpolicy_none(zfs_cmd_t *zc, cred_t *cr) 253 { 254 return (0); 255 } 256 257 /* 258 * Policy for dataset read operations (list children, get statistics). Requires 259 * no privileges, but must be visible in the local zone. 260 */ 261 /* ARGSUSED */ 262 static int 263 zfs_secpolicy_read(zfs_cmd_t *zc, cred_t *cr) 264 { 265 if (INGLOBALZONE(curproc) || 266 zone_dataset_visible(zc->zc_name, NULL)) 267 return (0); 268 269 return (ENOENT); 270 } 271 272 static int 273 zfs_dozonecheck(const char *dataset, cred_t *cr) 274 { 275 uint64_t zoned; 276 int writable = 1; 277 278 /* 279 * The dataset must be visible by this zone -- check this first 280 * so they don't see EPERM on something they shouldn't know about. 281 */ 282 if (!INGLOBALZONE(curproc) && 283 !zone_dataset_visible(dataset, &writable)) 284 return (ENOENT); 285 286 if (dsl_prop_get_integer(dataset, "zoned", &zoned, NULL)) 287 return (ENOENT); 288 289 if (INGLOBALZONE(curproc)) { 290 /* 291 * If the fs is zoned, only root can access it from the 292 * global zone. 293 */ 294 if (secpolicy_zfs(cr) && zoned) 295 return (EPERM); 296 } else { 297 /* 298 * If we are in a local zone, the 'zoned' property must be set. 299 */ 300 if (!zoned) 301 return (EPERM); 302 303 /* must be writable by this zone */ 304 if (!writable) 305 return (EPERM); 306 } 307 return (0); 308 } 309 310 int 311 zfs_secpolicy_write_perms(const char *name, const char *perm, cred_t *cr) 312 { 313 int error; 314 315 error = zfs_dozonecheck(name, cr); 316 if (error == 0) { 317 error = secpolicy_zfs(cr); 318 if (error) 319 error = dsl_deleg_access(name, perm, cr); 320 } 321 return (error); 322 } 323 324 static int 325 zfs_secpolicy_setprop(const char *name, zfs_prop_t prop, cred_t *cr) 326 { 327 /* 328 * Check permissions for special properties. 329 */ 330 switch (prop) { 331 case ZFS_PROP_ZONED: 332 /* 333 * Disallow setting of 'zoned' from within a local zone. 334 */ 335 if (!INGLOBALZONE(curproc)) 336 return (EPERM); 337 break; 338 339 case ZFS_PROP_QUOTA: 340 if (!INGLOBALZONE(curproc)) { 341 uint64_t zoned; 342 char setpoint[MAXNAMELEN]; 343 /* 344 * Unprivileged users are allowed to modify the 345 * quota on things *under* (ie. contained by) 346 * the thing they own. 347 */ 348 if (dsl_prop_get_integer(name, "zoned", &zoned, 349 setpoint)) 350 return (EPERM); 351 if (!zoned || strlen(name) <= strlen(setpoint)) 352 return (EPERM); 353 } 354 break; 355 } 356 357 return (zfs_secpolicy_write_perms(name, zfs_prop_to_name(prop), cr)); 358 } 359 360 int 361 zfs_secpolicy_fsacl(zfs_cmd_t *zc, cred_t *cr) 362 { 363 int error; 364 365 error = zfs_dozonecheck(zc->zc_name, cr); 366 if (error) 367 return (error); 368 369 /* 370 * permission to set permissions will be evaluated later in 371 * dsl_deleg_can_allow() 372 */ 373 return (0); 374 } 375 376 int 377 zfs_secpolicy_rollback(zfs_cmd_t *zc, cred_t *cr) 378 { 379 int error; 380 error = zfs_secpolicy_write_perms(zc->zc_name, 381 ZFS_DELEG_PERM_ROLLBACK, cr); 382 if (error == 0) 383 error = zfs_secpolicy_write_perms(zc->zc_name, 384 ZFS_DELEG_PERM_MOUNT, cr); 385 return (error); 386 } 387 388 int 389 zfs_secpolicy_send(zfs_cmd_t *zc, cred_t *cr) 390 { 391 return (zfs_secpolicy_write_perms(zc->zc_name, 392 ZFS_DELEG_PERM_SEND, cr)); 393 } 394 395 static int 396 zfs_secpolicy_deleg_share(zfs_cmd_t *zc, cred_t *cr) 397 { 398 vnode_t *vp; 399 int error; 400 401 if ((error = lookupname(zc->zc_value, UIO_SYSSPACE, 402 NO_FOLLOW, NULL, &vp)) != 0) 403 return (error); 404 405 /* Now make sure mntpnt and dataset are ZFS */ 406 407 if (vp->v_vfsp->vfs_fstype != zfsfstype || 408 (strcmp((char *)refstr_value(vp->v_vfsp->vfs_resource), 409 zc->zc_name) != 0)) { 410 VN_RELE(vp); 411 return (EPERM); 412 } 413 414 VN_RELE(vp); 415 return (dsl_deleg_access(zc->zc_name, 416 ZFS_DELEG_PERM_SHARE, cr)); 417 } 418 419 int 420 zfs_secpolicy_share(zfs_cmd_t *zc, cred_t *cr) 421 { 422 if (!INGLOBALZONE(curproc)) 423 return (EPERM); 424 425 if (secpolicy_nfs(cr) == 0) { 426 return (0); 427 } else { 428 return (zfs_secpolicy_deleg_share(zc, cr)); 429 } 430 } 431 432 int 433 zfs_secpolicy_smb_acl(zfs_cmd_t *zc, cred_t *cr) 434 { 435 if (!INGLOBALZONE(curproc)) 436 return (EPERM); 437 438 if (secpolicy_smb(cr) == 0) { 439 return (0); 440 } else { 441 return (zfs_secpolicy_deleg_share(zc, cr)); 442 } 443 } 444 445 static int 446 zfs_get_parent(const char *datasetname, char *parent, int parentsize) 447 { 448 char *cp; 449 450 /* 451 * Remove the @bla or /bla from the end of the name to get the parent. 452 */ 453 (void) strncpy(parent, datasetname, parentsize); 454 cp = strrchr(parent, '@'); 455 if (cp != NULL) { 456 cp[0] = '\0'; 457 } else { 458 cp = strrchr(parent, '/'); 459 if (cp == NULL) 460 return (ENOENT); 461 cp[0] = '\0'; 462 } 463 464 return (0); 465 } 466 467 int 468 zfs_secpolicy_destroy_perms(const char *name, cred_t *cr) 469 { 470 int error; 471 472 if ((error = zfs_secpolicy_write_perms(name, 473 ZFS_DELEG_PERM_MOUNT, cr)) != 0) 474 return (error); 475 476 return (zfs_secpolicy_write_perms(name, ZFS_DELEG_PERM_DESTROY, cr)); 477 } 478 479 static int 480 zfs_secpolicy_destroy(zfs_cmd_t *zc, cred_t *cr) 481 { 482 return (zfs_secpolicy_destroy_perms(zc->zc_name, cr)); 483 } 484 485 /* 486 * Must have sys_config privilege to check the iscsi permission 487 */ 488 /* ARGSUSED */ 489 static int 490 zfs_secpolicy_iscsi(zfs_cmd_t *zc, cred_t *cr) 491 { 492 return (secpolicy_zfs(cr)); 493 } 494 495 int 496 zfs_secpolicy_rename_perms(const char *from, const char *to, cred_t *cr) 497 { 498 char parentname[MAXNAMELEN]; 499 int error; 500 501 if ((error = zfs_secpolicy_write_perms(from, 502 ZFS_DELEG_PERM_RENAME, cr)) != 0) 503 return (error); 504 505 if ((error = zfs_secpolicy_write_perms(from, 506 ZFS_DELEG_PERM_MOUNT, cr)) != 0) 507 return (error); 508 509 if ((error = zfs_get_parent(to, parentname, 510 sizeof (parentname))) != 0) 511 return (error); 512 513 if ((error = zfs_secpolicy_write_perms(parentname, 514 ZFS_DELEG_PERM_CREATE, cr)) != 0) 515 return (error); 516 517 if ((error = zfs_secpolicy_write_perms(parentname, 518 ZFS_DELEG_PERM_MOUNT, cr)) != 0) 519 return (error); 520 521 return (error); 522 } 523 524 static int 525 zfs_secpolicy_rename(zfs_cmd_t *zc, cred_t *cr) 526 { 527 return (zfs_secpolicy_rename_perms(zc->zc_name, zc->zc_value, cr)); 528 } 529 530 static int 531 zfs_secpolicy_promote(zfs_cmd_t *zc, cred_t *cr) 532 { 533 char parentname[MAXNAMELEN]; 534 objset_t *clone; 535 int error; 536 537 error = zfs_secpolicy_write_perms(zc->zc_name, 538 ZFS_DELEG_PERM_PROMOTE, cr); 539 if (error) 540 return (error); 541 542 error = dmu_objset_open(zc->zc_name, DMU_OST_ANY, 543 DS_MODE_USER | DS_MODE_READONLY, &clone); 544 545 if (error == 0) { 546 dsl_dataset_t *pclone = NULL; 547 dsl_dir_t *dd; 548 dd = clone->os->os_dsl_dataset->ds_dir; 549 550 rw_enter(&dd->dd_pool->dp_config_rwlock, RW_READER); 551 error = dsl_dataset_hold_obj(dd->dd_pool, 552 dd->dd_phys->dd_origin_obj, FTAG, &pclone); 553 rw_exit(&dd->dd_pool->dp_config_rwlock); 554 if (error) { 555 dmu_objset_close(clone); 556 return (error); 557 } 558 559 error = zfs_secpolicy_write_perms(zc->zc_name, 560 ZFS_DELEG_PERM_MOUNT, cr); 561 562 dsl_dataset_name(pclone, parentname); 563 dmu_objset_close(clone); 564 dsl_dataset_rele(pclone, FTAG); 565 if (error == 0) 566 error = zfs_secpolicy_write_perms(parentname, 567 ZFS_DELEG_PERM_PROMOTE, cr); 568 } 569 return (error); 570 } 571 572 static int 573 zfs_secpolicy_receive(zfs_cmd_t *zc, cred_t *cr) 574 { 575 int error; 576 577 if ((error = zfs_secpolicy_write_perms(zc->zc_name, 578 ZFS_DELEG_PERM_RECEIVE, cr)) != 0) 579 return (error); 580 581 if ((error = zfs_secpolicy_write_perms(zc->zc_name, 582 ZFS_DELEG_PERM_MOUNT, cr)) != 0) 583 return (error); 584 585 return (zfs_secpolicy_write_perms(zc->zc_name, 586 ZFS_DELEG_PERM_CREATE, cr)); 587 } 588 589 int 590 zfs_secpolicy_snapshot_perms(const char *name, cred_t *cr) 591 { 592 int error; 593 594 if ((error = zfs_secpolicy_write_perms(name, 595 ZFS_DELEG_PERM_SNAPSHOT, cr)) != 0) 596 return (error); 597 598 error = zfs_secpolicy_write_perms(name, 599 ZFS_DELEG_PERM_MOUNT, cr); 600 601 return (error); 602 } 603 604 static int 605 zfs_secpolicy_snapshot(zfs_cmd_t *zc, cred_t *cr) 606 { 607 608 return (zfs_secpolicy_snapshot_perms(zc->zc_name, cr)); 609 } 610 611 static int 612 zfs_secpolicy_create(zfs_cmd_t *zc, cred_t *cr) 613 { 614 char parentname[MAXNAMELEN]; 615 int error; 616 617 if ((error = zfs_get_parent(zc->zc_name, parentname, 618 sizeof (parentname))) != 0) 619 return (error); 620 621 if (zc->zc_value[0] != '\0') { 622 if ((error = zfs_secpolicy_write_perms(zc->zc_value, 623 ZFS_DELEG_PERM_CLONE, cr)) != 0) 624 return (error); 625 } 626 627 if ((error = zfs_secpolicy_write_perms(parentname, 628 ZFS_DELEG_PERM_CREATE, cr)) != 0) 629 return (error); 630 631 error = zfs_secpolicy_write_perms(parentname, 632 ZFS_DELEG_PERM_MOUNT, cr); 633 634 return (error); 635 } 636 637 static int 638 zfs_secpolicy_umount(zfs_cmd_t *zc, cred_t *cr) 639 { 640 int error; 641 642 error = secpolicy_fs_unmount(cr, NULL); 643 if (error) { 644 error = dsl_deleg_access(zc->zc_name, ZFS_DELEG_PERM_MOUNT, cr); 645 } 646 return (error); 647 } 648 649 /* 650 * Policy for pool operations - create/destroy pools, add vdevs, etc. Requires 651 * SYS_CONFIG privilege, which is not available in a local zone. 652 */ 653 /* ARGSUSED */ 654 static int 655 zfs_secpolicy_config(zfs_cmd_t *zc, cred_t *cr) 656 { 657 if (secpolicy_sys_config(cr, B_FALSE) != 0) 658 return (EPERM); 659 660 return (0); 661 } 662 663 /* 664 * Just like zfs_secpolicy_config, except that we will check for 665 * mount permission on the dataset for permission to create/remove 666 * the minor nodes. 667 */ 668 static int 669 zfs_secpolicy_minor(zfs_cmd_t *zc, cred_t *cr) 670 { 671 if (secpolicy_sys_config(cr, B_FALSE) != 0) { 672 return (dsl_deleg_access(zc->zc_name, 673 ZFS_DELEG_PERM_MOUNT, cr)); 674 } 675 676 return (0); 677 } 678 679 /* 680 * Policy for fault injection. Requires all privileges. 681 */ 682 /* ARGSUSED */ 683 static int 684 zfs_secpolicy_inject(zfs_cmd_t *zc, cred_t *cr) 685 { 686 return (secpolicy_zinject(cr)); 687 } 688 689 static int 690 zfs_secpolicy_inherit(zfs_cmd_t *zc, cred_t *cr) 691 { 692 zfs_prop_t prop = zfs_name_to_prop(zc->zc_value); 693 694 if (prop == ZPROP_INVAL) { 695 if (!zfs_prop_user(zc->zc_value)) 696 return (EINVAL); 697 return (zfs_secpolicy_write_perms(zc->zc_name, 698 ZFS_DELEG_PERM_USERPROP, cr)); 699 } else { 700 if (!zfs_prop_inheritable(prop)) 701 return (EINVAL); 702 return (zfs_secpolicy_setprop(zc->zc_name, prop, cr)); 703 } 704 } 705 706 /* 707 * Returns the nvlist as specified by the user in the zfs_cmd_t. 708 */ 709 static int 710 get_nvlist(uint64_t nvl, uint64_t size, nvlist_t **nvp) 711 { 712 char *packed; 713 int error; 714 nvlist_t *list = NULL; 715 716 /* 717 * Read in and unpack the user-supplied nvlist. 718 */ 719 if (size == 0) 720 return (EINVAL); 721 722 packed = kmem_alloc(size, KM_SLEEP); 723 724 if ((error = xcopyin((void *)(uintptr_t)nvl, packed, size)) != 0) { 725 kmem_free(packed, size); 726 return (error); 727 } 728 729 if ((error = nvlist_unpack(packed, size, &list, 0)) != 0) { 730 kmem_free(packed, size); 731 return (error); 732 } 733 734 kmem_free(packed, size); 735 736 *nvp = list; 737 return (0); 738 } 739 740 static int 741 put_nvlist(zfs_cmd_t *zc, nvlist_t *nvl) 742 { 743 char *packed = NULL; 744 size_t size; 745 int error; 746 747 VERIFY(nvlist_size(nvl, &size, NV_ENCODE_NATIVE) == 0); 748 749 if (size > zc->zc_nvlist_dst_size) { 750 error = ENOMEM; 751 } else { 752 packed = kmem_alloc(size, KM_SLEEP); 753 VERIFY(nvlist_pack(nvl, &packed, &size, NV_ENCODE_NATIVE, 754 KM_SLEEP) == 0); 755 error = xcopyout(packed, (void *)(uintptr_t)zc->zc_nvlist_dst, 756 size); 757 kmem_free(packed, size); 758 } 759 760 zc->zc_nvlist_dst_size = size; 761 return (error); 762 } 763 764 static int 765 zfs_ioc_pool_create(zfs_cmd_t *zc) 766 { 767 int error; 768 nvlist_t *config, *props = NULL; 769 nvlist_t *rootprops = NULL; 770 nvlist_t *zplprops = NULL; 771 char *buf; 772 773 if (error = get_nvlist(zc->zc_nvlist_conf, zc->zc_nvlist_conf_size, 774 &config)) 775 return (error); 776 777 if (zc->zc_nvlist_src_size != 0 && (error = 778 get_nvlist(zc->zc_nvlist_src, zc->zc_nvlist_src_size, &props))) { 779 nvlist_free(config); 780 return (error); 781 } 782 783 if (props) { 784 nvlist_t *nvl = NULL; 785 uint64_t version = SPA_VERSION; 786 787 (void) nvlist_lookup_uint64(props, 788 zpool_prop_to_name(ZPOOL_PROP_VERSION), &version); 789 if (version < SPA_VERSION_INITIAL || version > SPA_VERSION) { 790 error = EINVAL; 791 goto pool_props_bad; 792 } 793 (void) nvlist_lookup_nvlist(props, ZPOOL_ROOTFS_PROPS, &nvl); 794 if (nvl) { 795 error = nvlist_dup(nvl, &rootprops, KM_SLEEP); 796 if (error != 0) { 797 nvlist_free(config); 798 nvlist_free(props); 799 return (error); 800 } 801 (void) nvlist_remove_all(props, ZPOOL_ROOTFS_PROPS); 802 } 803 VERIFY(nvlist_alloc(&zplprops, NV_UNIQUE_NAME, KM_SLEEP) == 0); 804 error = zfs_fill_zplprops_root(version, rootprops, 805 zplprops, NULL); 806 if (error) 807 goto pool_props_bad; 808 } 809 810 buf = history_str_get(zc); 811 812 error = spa_create(zc->zc_name, config, props, buf, zplprops); 813 814 /* 815 * Set the remaining root properties 816 */ 817 if (!error && 818 (error = zfs_set_prop_nvlist(zc->zc_name, rootprops)) != 0) 819 (void) spa_destroy(zc->zc_name); 820 821 if (buf != NULL) 822 history_str_free(buf); 823 824 pool_props_bad: 825 nvlist_free(rootprops); 826 nvlist_free(zplprops); 827 nvlist_free(config); 828 nvlist_free(props); 829 830 return (error); 831 } 832 833 static int 834 zfs_ioc_pool_destroy(zfs_cmd_t *zc) 835 { 836 int error; 837 zfs_log_history(zc); 838 error = spa_destroy(zc->zc_name); 839 return (error); 840 } 841 842 static int 843 zfs_ioc_pool_import(zfs_cmd_t *zc) 844 { 845 int error; 846 nvlist_t *config, *props = NULL; 847 uint64_t guid; 848 849 if ((error = get_nvlist(zc->zc_nvlist_conf, zc->zc_nvlist_conf_size, 850 &config)) != 0) 851 return (error); 852 853 if (zc->zc_nvlist_src_size != 0 && (error = 854 get_nvlist(zc->zc_nvlist_src, zc->zc_nvlist_src_size, &props))) { 855 nvlist_free(config); 856 return (error); 857 } 858 859 if (nvlist_lookup_uint64(config, ZPOOL_CONFIG_POOL_GUID, &guid) != 0 || 860 guid != zc->zc_guid) 861 error = EINVAL; 862 else if (zc->zc_cookie) 863 error = spa_import_faulted(zc->zc_name, config, 864 props); 865 else 866 error = spa_import(zc->zc_name, config, props); 867 868 nvlist_free(config); 869 870 if (props) 871 nvlist_free(props); 872 873 return (error); 874 } 875 876 static int 877 zfs_ioc_pool_export(zfs_cmd_t *zc) 878 { 879 int error; 880 boolean_t force = (boolean_t)zc->zc_cookie; 881 boolean_t hardforce = (boolean_t)zc->zc_guid; 882 883 zfs_log_history(zc); 884 error = spa_export(zc->zc_name, NULL, force, hardforce); 885 return (error); 886 } 887 888 static int 889 zfs_ioc_pool_configs(zfs_cmd_t *zc) 890 { 891 nvlist_t *configs; 892 int error; 893 894 if ((configs = spa_all_configs(&zc->zc_cookie)) == NULL) 895 return (EEXIST); 896 897 error = put_nvlist(zc, configs); 898 899 nvlist_free(configs); 900 901 return (error); 902 } 903 904 static int 905 zfs_ioc_pool_stats(zfs_cmd_t *zc) 906 { 907 nvlist_t *config; 908 int error; 909 int ret = 0; 910 911 error = spa_get_stats(zc->zc_name, &config, zc->zc_value, 912 sizeof (zc->zc_value)); 913 914 if (config != NULL) { 915 ret = put_nvlist(zc, config); 916 nvlist_free(config); 917 918 /* 919 * The config may be present even if 'error' is non-zero. 920 * In this case we return success, and preserve the real errno 921 * in 'zc_cookie'. 922 */ 923 zc->zc_cookie = error; 924 } else { 925 ret = error; 926 } 927 928 return (ret); 929 } 930 931 /* 932 * Try to import the given pool, returning pool stats as appropriate so that 933 * user land knows which devices are available and overall pool health. 934 */ 935 static int 936 zfs_ioc_pool_tryimport(zfs_cmd_t *zc) 937 { 938 nvlist_t *tryconfig, *config; 939 int error; 940 941 if ((error = get_nvlist(zc->zc_nvlist_conf, zc->zc_nvlist_conf_size, 942 &tryconfig)) != 0) 943 return (error); 944 945 config = spa_tryimport(tryconfig); 946 947 nvlist_free(tryconfig); 948 949 if (config == NULL) 950 return (EINVAL); 951 952 error = put_nvlist(zc, config); 953 nvlist_free(config); 954 955 return (error); 956 } 957 958 static int 959 zfs_ioc_pool_scrub(zfs_cmd_t *zc) 960 { 961 spa_t *spa; 962 int error; 963 964 if ((error = spa_open(zc->zc_name, &spa, FTAG)) != 0) 965 return (error); 966 967 error = spa_scrub(spa, zc->zc_cookie); 968 969 spa_close(spa, FTAG); 970 971 return (error); 972 } 973 974 static int 975 zfs_ioc_pool_freeze(zfs_cmd_t *zc) 976 { 977 spa_t *spa; 978 int error; 979 980 error = spa_open(zc->zc_name, &spa, FTAG); 981 if (error == 0) { 982 spa_freeze(spa); 983 spa_close(spa, FTAG); 984 } 985 return (error); 986 } 987 988 static int 989 zfs_ioc_pool_upgrade(zfs_cmd_t *zc) 990 { 991 spa_t *spa; 992 int error; 993 994 if ((error = spa_open(zc->zc_name, &spa, FTAG)) != 0) 995 return (error); 996 997 if (zc->zc_cookie < spa_version(spa) || zc->zc_cookie > SPA_VERSION) { 998 spa_close(spa, FTAG); 999 return (EINVAL); 1000 } 1001 1002 spa_upgrade(spa, zc->zc_cookie); 1003 spa_close(spa, FTAG); 1004 1005 return (error); 1006 } 1007 1008 static int 1009 zfs_ioc_pool_get_history(zfs_cmd_t *zc) 1010 { 1011 spa_t *spa; 1012 char *hist_buf; 1013 uint64_t size; 1014 int error; 1015 1016 if ((size = zc->zc_history_len) == 0) 1017 return (EINVAL); 1018 1019 if ((error = spa_open(zc->zc_name, &spa, FTAG)) != 0) 1020 return (error); 1021 1022 if (spa_version(spa) < SPA_VERSION_ZPOOL_HISTORY) { 1023 spa_close(spa, FTAG); 1024 return (ENOTSUP); 1025 } 1026 1027 hist_buf = kmem_alloc(size, KM_SLEEP); 1028 if ((error = spa_history_get(spa, &zc->zc_history_offset, 1029 &zc->zc_history_len, hist_buf)) == 0) { 1030 error = xcopyout(hist_buf, 1031 (char *)(uintptr_t)zc->zc_history, 1032 zc->zc_history_len); 1033 } 1034 1035 spa_close(spa, FTAG); 1036 kmem_free(hist_buf, size); 1037 return (error); 1038 } 1039 1040 static int 1041 zfs_ioc_dsobj_to_dsname(zfs_cmd_t *zc) 1042 { 1043 int error; 1044 1045 if (error = dsl_dsobj_to_dsname(zc->zc_name, zc->zc_obj, zc->zc_value)) 1046 return (error); 1047 1048 return (0); 1049 } 1050 1051 static int 1052 zfs_ioc_obj_to_path(zfs_cmd_t *zc) 1053 { 1054 objset_t *osp; 1055 int error; 1056 1057 if ((error = dmu_objset_open(zc->zc_name, DMU_OST_ZFS, 1058 DS_MODE_USER | DS_MODE_READONLY, &osp)) != 0) 1059 return (error); 1060 error = zfs_obj_to_path(osp, zc->zc_obj, zc->zc_value, 1061 sizeof (zc->zc_value)); 1062 dmu_objset_close(osp); 1063 1064 return (error); 1065 } 1066 1067 static int 1068 zfs_ioc_vdev_add(zfs_cmd_t *zc) 1069 { 1070 spa_t *spa; 1071 int error; 1072 nvlist_t *config, **l2cache, **spares; 1073 uint_t nl2cache = 0, nspares = 0; 1074 1075 error = spa_open(zc->zc_name, &spa, FTAG); 1076 if (error != 0) 1077 return (error); 1078 1079 error = get_nvlist(zc->zc_nvlist_conf, zc->zc_nvlist_conf_size, 1080 &config); 1081 (void) nvlist_lookup_nvlist_array(config, ZPOOL_CONFIG_L2CACHE, 1082 &l2cache, &nl2cache); 1083 1084 (void) nvlist_lookup_nvlist_array(config, ZPOOL_CONFIG_SPARES, 1085 &spares, &nspares); 1086 1087 /* 1088 * A root pool with concatenated devices is not supported. 1089 * Thus, can not add a device to a root pool. 1090 * 1091 * Intent log device can not be added to a rootpool because 1092 * during mountroot, zil is replayed, a seperated log device 1093 * can not be accessed during the mountroot time. 1094 * 1095 * l2cache and spare devices are ok to be added to a rootpool. 1096 */ 1097 if (spa->spa_bootfs != 0 && nl2cache == 0 && nspares == 0) { 1098 spa_close(spa, FTAG); 1099 return (EDOM); 1100 } 1101 1102 if (error == 0) { 1103 error = spa_vdev_add(spa, config); 1104 nvlist_free(config); 1105 } 1106 spa_close(spa, FTAG); 1107 return (error); 1108 } 1109 1110 static int 1111 zfs_ioc_vdev_remove(zfs_cmd_t *zc) 1112 { 1113 spa_t *spa; 1114 int error; 1115 1116 error = spa_open(zc->zc_name, &spa, FTAG); 1117 if (error != 0) 1118 return (error); 1119 error = spa_vdev_remove(spa, zc->zc_guid, B_FALSE); 1120 spa_close(spa, FTAG); 1121 return (error); 1122 } 1123 1124 static int 1125 zfs_ioc_vdev_set_state(zfs_cmd_t *zc) 1126 { 1127 spa_t *spa; 1128 int error; 1129 vdev_state_t newstate = VDEV_STATE_UNKNOWN; 1130 1131 if ((error = spa_open(zc->zc_name, &spa, FTAG)) != 0) 1132 return (error); 1133 switch (zc->zc_cookie) { 1134 case VDEV_STATE_ONLINE: 1135 error = vdev_online(spa, zc->zc_guid, zc->zc_obj, &newstate); 1136 break; 1137 1138 case VDEV_STATE_OFFLINE: 1139 error = vdev_offline(spa, zc->zc_guid, zc->zc_obj); 1140 break; 1141 1142 case VDEV_STATE_FAULTED: 1143 error = vdev_fault(spa, zc->zc_guid); 1144 break; 1145 1146 case VDEV_STATE_DEGRADED: 1147 error = vdev_degrade(spa, zc->zc_guid); 1148 break; 1149 1150 default: 1151 error = EINVAL; 1152 } 1153 zc->zc_cookie = newstate; 1154 spa_close(spa, FTAG); 1155 return (error); 1156 } 1157 1158 static int 1159 zfs_ioc_vdev_attach(zfs_cmd_t *zc) 1160 { 1161 spa_t *spa; 1162 int replacing = zc->zc_cookie; 1163 nvlist_t *config; 1164 int error; 1165 1166 if ((error = spa_open(zc->zc_name, &spa, FTAG)) != 0) 1167 return (error); 1168 1169 if ((error = get_nvlist(zc->zc_nvlist_conf, zc->zc_nvlist_conf_size, 1170 &config)) == 0) { 1171 error = spa_vdev_attach(spa, zc->zc_guid, config, replacing); 1172 nvlist_free(config); 1173 } 1174 1175 spa_close(spa, FTAG); 1176 return (error); 1177 } 1178 1179 static int 1180 zfs_ioc_vdev_detach(zfs_cmd_t *zc) 1181 { 1182 spa_t *spa; 1183 int error; 1184 1185 if ((error = spa_open(zc->zc_name, &spa, FTAG)) != 0) 1186 return (error); 1187 1188 error = spa_vdev_detach(spa, zc->zc_guid, 0, B_FALSE); 1189 1190 spa_close(spa, FTAG); 1191 return (error); 1192 } 1193 1194 static int 1195 zfs_ioc_vdev_setpath(zfs_cmd_t *zc) 1196 { 1197 spa_t *spa; 1198 char *path = zc->zc_value; 1199 uint64_t guid = zc->zc_guid; 1200 int error; 1201 1202 error = spa_open(zc->zc_name, &spa, FTAG); 1203 if (error != 0) 1204 return (error); 1205 1206 error = spa_vdev_setpath(spa, guid, path); 1207 spa_close(spa, FTAG); 1208 return (error); 1209 } 1210 1211 /* 1212 * inputs: 1213 * zc_name name of filesystem 1214 * zc_nvlist_dst_size size of buffer for property nvlist 1215 * 1216 * outputs: 1217 * zc_objset_stats stats 1218 * zc_nvlist_dst property nvlist 1219 * zc_nvlist_dst_size size of property nvlist 1220 */ 1221 static int 1222 zfs_ioc_objset_stats(zfs_cmd_t *zc) 1223 { 1224 objset_t *os = NULL; 1225 int error; 1226 nvlist_t *nv; 1227 1228 if (error = dmu_objset_open(zc->zc_name, 1229 DMU_OST_ANY, DS_MODE_USER | DS_MODE_READONLY, &os)) 1230 return (error); 1231 1232 dmu_objset_fast_stat(os, &zc->zc_objset_stats); 1233 1234 if (zc->zc_nvlist_dst != 0 && 1235 (error = dsl_prop_get_all(os, &nv, FALSE)) == 0) { 1236 dmu_objset_stats(os, nv); 1237 /* 1238 * NB: zvol_get_stats() will read the objset contents, 1239 * which we aren't supposed to do with a 1240 * DS_MODE_USER hold, because it could be 1241 * inconsistent. So this is a bit of a workaround... 1242 */ 1243 if (!zc->zc_objset_stats.dds_inconsistent) { 1244 if (dmu_objset_type(os) == DMU_OST_ZVOL) 1245 VERIFY(zvol_get_stats(os, nv) == 0); 1246 } 1247 error = put_nvlist(zc, nv); 1248 nvlist_free(nv); 1249 } 1250 1251 dmu_objset_close(os); 1252 return (error); 1253 } 1254 1255 static int 1256 nvl_add_zplprop(objset_t *os, nvlist_t *props, zfs_prop_t prop) 1257 { 1258 uint64_t value; 1259 int error; 1260 1261 /* 1262 * zfs_get_zplprop() will either find a value or give us 1263 * the default value (if there is one). 1264 */ 1265 if ((error = zfs_get_zplprop(os, prop, &value)) != 0) 1266 return (error); 1267 VERIFY(nvlist_add_uint64(props, zfs_prop_to_name(prop), value) == 0); 1268 return (0); 1269 } 1270 1271 /* 1272 * inputs: 1273 * zc_name name of filesystem 1274 * zc_nvlist_dst_size size of buffer for zpl property nvlist 1275 * 1276 * outputs: 1277 * zc_nvlist_dst zpl property nvlist 1278 * zc_nvlist_dst_size size of zpl property nvlist 1279 */ 1280 static int 1281 zfs_ioc_objset_zplprops(zfs_cmd_t *zc) 1282 { 1283 objset_t *os; 1284 int err; 1285 1286 if (err = dmu_objset_open(zc->zc_name, 1287 DMU_OST_ANY, DS_MODE_USER | DS_MODE_READONLY, &os)) 1288 return (err); 1289 1290 dmu_objset_fast_stat(os, &zc->zc_objset_stats); 1291 1292 /* 1293 * NB: nvl_add_zplprop() will read the objset contents, 1294 * which we aren't supposed to do with a DS_MODE_USER 1295 * hold, because it could be inconsistent. 1296 */ 1297 if (zc->zc_nvlist_dst != NULL && 1298 !zc->zc_objset_stats.dds_inconsistent && 1299 dmu_objset_type(os) == DMU_OST_ZFS) { 1300 nvlist_t *nv; 1301 1302 VERIFY(nvlist_alloc(&nv, NV_UNIQUE_NAME, KM_SLEEP) == 0); 1303 if ((err = nvl_add_zplprop(os, nv, ZFS_PROP_VERSION)) == 0 && 1304 (err = nvl_add_zplprop(os, nv, ZFS_PROP_NORMALIZE)) == 0 && 1305 (err = nvl_add_zplprop(os, nv, ZFS_PROP_UTF8ONLY)) == 0 && 1306 (err = nvl_add_zplprop(os, nv, ZFS_PROP_CASE)) == 0) 1307 err = put_nvlist(zc, nv); 1308 nvlist_free(nv); 1309 } else { 1310 err = ENOENT; 1311 } 1312 dmu_objset_close(os); 1313 return (err); 1314 } 1315 1316 /* 1317 * inputs: 1318 * zc_name name of filesystem 1319 * zc_cookie zap cursor 1320 * zc_nvlist_dst_size size of buffer for property nvlist 1321 * 1322 * outputs: 1323 * zc_name name of next filesystem 1324 * zc_objset_stats stats 1325 * zc_nvlist_dst property nvlist 1326 * zc_nvlist_dst_size size of property nvlist 1327 */ 1328 static int 1329 zfs_ioc_dataset_list_next(zfs_cmd_t *zc) 1330 { 1331 objset_t *os; 1332 int error; 1333 char *p; 1334 1335 if (error = dmu_objset_open(zc->zc_name, 1336 DMU_OST_ANY, DS_MODE_USER | DS_MODE_READONLY, &os)) { 1337 if (error == ENOENT) 1338 error = ESRCH; 1339 return (error); 1340 } 1341 1342 p = strrchr(zc->zc_name, '/'); 1343 if (p == NULL || p[1] != '\0') 1344 (void) strlcat(zc->zc_name, "/", sizeof (zc->zc_name)); 1345 p = zc->zc_name + strlen(zc->zc_name); 1346 1347 /* 1348 * Pre-fetch the datasets. dmu_objset_prefetch() always returns 0 1349 * but is not declared void because its called by dmu_objset_find(). 1350 */ 1351 if (zc->zc_cookie == 0) { 1352 uint64_t cookie = 0; 1353 int len = sizeof (zc->zc_name) - (p - zc->zc_name); 1354 1355 while (dmu_dir_list_next(os, len, p, NULL, &cookie) == 0) 1356 (void) dmu_objset_prefetch(p, NULL); 1357 } 1358 1359 do { 1360 error = dmu_dir_list_next(os, 1361 sizeof (zc->zc_name) - (p - zc->zc_name), p, 1362 NULL, &zc->zc_cookie); 1363 if (error == ENOENT) 1364 error = ESRCH; 1365 } while (error == 0 && !INGLOBALZONE(curproc) && 1366 !zone_dataset_visible(zc->zc_name, NULL)); 1367 dmu_objset_close(os); 1368 1369 /* 1370 * If it's a hidden dataset (ie. with a '$' in its name), don't 1371 * try to get stats for it. Userland will skip over it. 1372 */ 1373 if (error == 0 && strchr(zc->zc_name, '$') == NULL) 1374 error = zfs_ioc_objset_stats(zc); /* fill in the stats */ 1375 1376 return (error); 1377 } 1378 1379 /* 1380 * inputs: 1381 * zc_name name of filesystem 1382 * zc_cookie zap cursor 1383 * zc_nvlist_dst_size size of buffer for property nvlist 1384 * 1385 * outputs: 1386 * zc_name name of next snapshot 1387 * zc_objset_stats stats 1388 * zc_nvlist_dst property nvlist 1389 * zc_nvlist_dst_size size of property nvlist 1390 */ 1391 static int 1392 zfs_ioc_snapshot_list_next(zfs_cmd_t *zc) 1393 { 1394 objset_t *os; 1395 int error; 1396 1397 error = dmu_objset_open(zc->zc_name, 1398 DMU_OST_ANY, DS_MODE_USER | DS_MODE_READONLY, &os); 1399 if (error) 1400 return (error == ENOENT ? ESRCH : error); 1401 1402 if (zc->zc_cookie == 0) 1403 (void) dmu_objset_find(zc->zc_name, dmu_objset_prefetch, 1404 NULL, DS_FIND_SNAPSHOTS); 1405 /* 1406 * A dataset name of maximum length cannot have any snapshots, 1407 * so exit immediately. 1408 */ 1409 if (strlcat(zc->zc_name, "@", sizeof (zc->zc_name)) >= MAXNAMELEN) { 1410 dmu_objset_close(os); 1411 return (ESRCH); 1412 } 1413 1414 error = dmu_snapshot_list_next(os, 1415 sizeof (zc->zc_name) - strlen(zc->zc_name), 1416 zc->zc_name + strlen(zc->zc_name), NULL, &zc->zc_cookie, NULL); 1417 dmu_objset_close(os); 1418 if (error == 0) 1419 error = zfs_ioc_objset_stats(zc); /* fill in the stats */ 1420 else if (error == ENOENT) 1421 error = ESRCH; 1422 1423 /* if we failed, undo the @ that we tacked on to zc_name */ 1424 if (error) 1425 *strchr(zc->zc_name, '@') = '\0'; 1426 return (error); 1427 } 1428 1429 int 1430 zfs_set_prop_nvlist(const char *name, nvlist_t *nvl) 1431 { 1432 nvpair_t *elem; 1433 int error = 0; 1434 uint64_t intval; 1435 char *strval; 1436 nvlist_t *genericnvl; 1437 1438 /* 1439 * First validate permission to set all of the properties 1440 */ 1441 elem = NULL; 1442 while ((elem = nvlist_next_nvpair(nvl, elem)) != NULL) { 1443 const char *propname = nvpair_name(elem); 1444 zfs_prop_t prop = zfs_name_to_prop(propname); 1445 1446 if (prop == ZPROP_INVAL) { 1447 /* 1448 * If this is a user-defined property, it must be a 1449 * string, and there is no further validation to do. 1450 */ 1451 if (!zfs_prop_user(propname) || 1452 nvpair_type(elem) != DATA_TYPE_STRING) 1453 return (EINVAL); 1454 1455 if (error = zfs_secpolicy_write_perms(name, 1456 ZFS_DELEG_PERM_USERPROP, CRED())) 1457 return (error); 1458 continue; 1459 } 1460 1461 if ((error = zfs_secpolicy_setprop(name, prop, CRED())) != 0) 1462 return (error); 1463 1464 /* 1465 * Check that this value is valid for this pool version 1466 */ 1467 switch (prop) { 1468 case ZFS_PROP_COMPRESSION: 1469 /* 1470 * If the user specified gzip compression, make sure 1471 * the SPA supports it. We ignore any errors here since 1472 * we'll catch them later. 1473 */ 1474 if (nvpair_type(elem) == DATA_TYPE_UINT64 && 1475 nvpair_value_uint64(elem, &intval) == 0) { 1476 if (intval >= ZIO_COMPRESS_GZIP_1 && 1477 intval <= ZIO_COMPRESS_GZIP_9 && 1478 zfs_earlier_version(name, 1479 SPA_VERSION_GZIP_COMPRESSION)) 1480 return (ENOTSUP); 1481 1482 /* 1483 * If this is a bootable dataset then 1484 * verify that the compression algorithm 1485 * is supported for booting. We must return 1486 * something other than ENOTSUP since it 1487 * implies a downrev pool version. 1488 */ 1489 if (zfs_is_bootfs(name) && 1490 !BOOTFS_COMPRESS_VALID(intval)) 1491 return (ERANGE); 1492 } 1493 break; 1494 1495 case ZFS_PROP_COPIES: 1496 if (zfs_earlier_version(name, 1497 SPA_VERSION_DITTO_BLOCKS)) 1498 return (ENOTSUP); 1499 break; 1500 1501 case ZFS_PROP_SHARESMB: 1502 if (zpl_earlier_version(name, ZPL_VERSION_FUID)) 1503 return (ENOTSUP); 1504 break; 1505 1506 case ZFS_PROP_ACLINHERIT: 1507 if (nvpair_type(elem) == DATA_TYPE_UINT64 && 1508 nvpair_value_uint64(elem, &intval) == 0) 1509 if (intval == ZFS_ACL_PASSTHROUGH_X && 1510 zfs_earlier_version(name, 1511 SPA_VERSION_PASSTHROUGH_X)) 1512 return (ENOTSUP); 1513 } 1514 } 1515 1516 VERIFY(nvlist_alloc(&genericnvl, NV_UNIQUE_NAME, KM_SLEEP) == 0); 1517 elem = NULL; 1518 while ((elem = nvlist_next_nvpair(nvl, elem)) != NULL) { 1519 const char *propname = nvpair_name(elem); 1520 zfs_prop_t prop = zfs_name_to_prop(propname); 1521 1522 if (prop == ZPROP_INVAL) { 1523 VERIFY(nvpair_value_string(elem, &strval) == 0); 1524 error = dsl_prop_set(name, propname, 1, 1525 strlen(strval) + 1, strval); 1526 if (error == 0) 1527 continue; 1528 else 1529 goto out; 1530 } 1531 1532 switch (prop) { 1533 case ZFS_PROP_QUOTA: 1534 if ((error = nvpair_value_uint64(elem, &intval)) != 0 || 1535 (error = dsl_dir_set_quota(name, intval)) != 0) 1536 goto out; 1537 break; 1538 1539 case ZFS_PROP_REFQUOTA: 1540 if ((error = nvpair_value_uint64(elem, &intval)) != 0 || 1541 (error = dsl_dataset_set_quota(name, intval)) != 0) 1542 goto out; 1543 break; 1544 1545 case ZFS_PROP_RESERVATION: 1546 if ((error = nvpair_value_uint64(elem, &intval)) != 0 || 1547 (error = dsl_dir_set_reservation(name, 1548 intval)) != 0) 1549 goto out; 1550 break; 1551 1552 case ZFS_PROP_REFRESERVATION: 1553 if ((error = nvpair_value_uint64(elem, &intval)) != 0 || 1554 (error = dsl_dataset_set_reservation(name, 1555 intval)) != 0) 1556 goto out; 1557 break; 1558 1559 case ZFS_PROP_VOLSIZE: 1560 if ((error = nvpair_value_uint64(elem, &intval)) != 0 || 1561 (error = zvol_set_volsize(name, 1562 ddi_driver_major(zfs_dip), intval)) != 0) 1563 goto out; 1564 break; 1565 1566 case ZFS_PROP_VOLBLOCKSIZE: 1567 if ((error = nvpair_value_uint64(elem, &intval)) != 0 || 1568 (error = zvol_set_volblocksize(name, intval)) != 0) 1569 goto out; 1570 break; 1571 1572 case ZFS_PROP_VERSION: 1573 if ((error = nvpair_value_uint64(elem, &intval)) != 0 || 1574 (error = zfs_set_version(name, intval)) != 0) 1575 goto out; 1576 break; 1577 1578 default: 1579 if (nvpair_type(elem) == DATA_TYPE_STRING) { 1580 if (zfs_prop_get_type(prop) != 1581 PROP_TYPE_STRING) { 1582 error = EINVAL; 1583 goto out; 1584 } 1585 } else if (nvpair_type(elem) == DATA_TYPE_UINT64) { 1586 const char *unused; 1587 1588 VERIFY(nvpair_value_uint64(elem, &intval) == 0); 1589 1590 switch (zfs_prop_get_type(prop)) { 1591 case PROP_TYPE_NUMBER: 1592 break; 1593 case PROP_TYPE_STRING: 1594 error = EINVAL; 1595 goto out; 1596 case PROP_TYPE_INDEX: 1597 if (zfs_prop_index_to_string(prop, 1598 intval, &unused) != 0) { 1599 error = EINVAL; 1600 goto out; 1601 } 1602 break; 1603 default: 1604 cmn_err(CE_PANIC, 1605 "unknown property type"); 1606 break; 1607 } 1608 } else { 1609 error = EINVAL; 1610 goto out; 1611 } 1612 if ((error = nvlist_add_nvpair(genericnvl, elem)) != 0) 1613 goto out; 1614 } 1615 } 1616 1617 if (nvlist_next_nvpair(genericnvl, NULL) != NULL) { 1618 error = dsl_props_set(name, genericnvl); 1619 } 1620 out: 1621 nvlist_free(genericnvl); 1622 return (error); 1623 } 1624 1625 /* 1626 * Check that all the properties are valid user properties. 1627 */ 1628 static int 1629 zfs_check_userprops(char *fsname, nvlist_t *nvl) 1630 { 1631 nvpair_t *elem = NULL; 1632 int error = 0; 1633 1634 while ((elem = nvlist_next_nvpair(nvl, elem)) != NULL) { 1635 const char *propname = nvpair_name(elem); 1636 char *valstr; 1637 1638 if (!zfs_prop_user(propname) || 1639 nvpair_type(elem) != DATA_TYPE_STRING) 1640 return (EINVAL); 1641 1642 if (error = zfs_secpolicy_write_perms(fsname, 1643 ZFS_DELEG_PERM_USERPROP, CRED())) 1644 return (error); 1645 1646 if (strlen(propname) >= ZAP_MAXNAMELEN) 1647 return (ENAMETOOLONG); 1648 1649 VERIFY(nvpair_value_string(elem, &valstr) == 0); 1650 if (strlen(valstr) >= ZAP_MAXVALUELEN) 1651 return (E2BIG); 1652 } 1653 return (0); 1654 } 1655 1656 /* 1657 * inputs: 1658 * zc_name name of filesystem 1659 * zc_value name of property to set 1660 * zc_nvlist_src{_size} nvlist of properties to apply 1661 * zc_cookie clear existing local props? 1662 * 1663 * outputs: none 1664 */ 1665 static int 1666 zfs_ioc_set_prop(zfs_cmd_t *zc) 1667 { 1668 nvlist_t *nvl; 1669 int error; 1670 1671 if ((error = get_nvlist(zc->zc_nvlist_src, zc->zc_nvlist_src_size, 1672 &nvl)) != 0) 1673 return (error); 1674 1675 if (zc->zc_cookie) { 1676 nvlist_t *origprops; 1677 objset_t *os; 1678 1679 if (dmu_objset_open(zc->zc_name, DMU_OST_ANY, 1680 DS_MODE_USER | DS_MODE_READONLY, &os) == 0) { 1681 if (dsl_prop_get_all(os, &origprops, TRUE) == 0) { 1682 clear_props(zc->zc_name, origprops, nvl); 1683 nvlist_free(origprops); 1684 } 1685 dmu_objset_close(os); 1686 } 1687 1688 } 1689 1690 error = zfs_set_prop_nvlist(zc->zc_name, nvl); 1691 1692 nvlist_free(nvl); 1693 return (error); 1694 } 1695 1696 /* 1697 * inputs: 1698 * zc_name name of filesystem 1699 * zc_value name of property to inherit 1700 * 1701 * outputs: none 1702 */ 1703 static int 1704 zfs_ioc_inherit_prop(zfs_cmd_t *zc) 1705 { 1706 /* the property name has been validated by zfs_secpolicy_inherit() */ 1707 return (dsl_prop_set(zc->zc_name, zc->zc_value, 0, 0, NULL)); 1708 } 1709 1710 static int 1711 zfs_ioc_pool_set_props(zfs_cmd_t *zc) 1712 { 1713 nvlist_t *props; 1714 spa_t *spa; 1715 int error; 1716 nvpair_t *elem; 1717 1718 if ((error = get_nvlist(zc->zc_nvlist_src, zc->zc_nvlist_src_size, 1719 &props))) 1720 return (error); 1721 1722 /* 1723 * If the only property is the configfile, then just do a spa_lookup() 1724 * to handle the faulted case. 1725 */ 1726 elem = nvlist_next_nvpair(props, NULL); 1727 if (elem != NULL && strcmp(nvpair_name(elem), 1728 zpool_prop_to_name(ZPOOL_PROP_CACHEFILE)) == 0 && 1729 nvlist_next_nvpair(props, elem) == NULL) { 1730 mutex_enter(&spa_namespace_lock); 1731 if ((spa = spa_lookup(zc->zc_name)) != NULL) { 1732 spa_configfile_set(spa, props, B_FALSE); 1733 spa_config_sync(spa, B_FALSE, B_TRUE); 1734 } 1735 mutex_exit(&spa_namespace_lock); 1736 if (spa != NULL) 1737 return (0); 1738 } 1739 1740 if ((error = spa_open(zc->zc_name, &spa, FTAG)) != 0) { 1741 nvlist_free(props); 1742 return (error); 1743 } 1744 1745 error = spa_prop_set(spa, props); 1746 1747 nvlist_free(props); 1748 spa_close(spa, FTAG); 1749 1750 return (error); 1751 } 1752 1753 static int 1754 zfs_ioc_pool_get_props(zfs_cmd_t *zc) 1755 { 1756 spa_t *spa; 1757 int error; 1758 nvlist_t *nvp = NULL; 1759 1760 if ((error = spa_open(zc->zc_name, &spa, FTAG)) != 0) { 1761 /* 1762 * If the pool is faulted, there may be properties we can still 1763 * get (such as altroot and cachefile), so attempt to get them 1764 * anyway. 1765 */ 1766 mutex_enter(&spa_namespace_lock); 1767 if ((spa = spa_lookup(zc->zc_name)) != NULL) 1768 error = spa_prop_get(spa, &nvp); 1769 mutex_exit(&spa_namespace_lock); 1770 } else { 1771 error = spa_prop_get(spa, &nvp); 1772 spa_close(spa, FTAG); 1773 } 1774 1775 if (error == 0 && zc->zc_nvlist_dst != NULL) 1776 error = put_nvlist(zc, nvp); 1777 else 1778 error = EFAULT; 1779 1780 nvlist_free(nvp); 1781 return (error); 1782 } 1783 1784 static int 1785 zfs_ioc_iscsi_perm_check(zfs_cmd_t *zc) 1786 { 1787 nvlist_t *nvp; 1788 int error; 1789 uint32_t uid; 1790 uint32_t gid; 1791 uint32_t *groups; 1792 uint_t group_cnt; 1793 cred_t *usercred; 1794 1795 if ((error = get_nvlist(zc->zc_nvlist_src, zc->zc_nvlist_src_size, 1796 &nvp)) != 0) { 1797 return (error); 1798 } 1799 1800 if ((error = nvlist_lookup_uint32(nvp, 1801 ZFS_DELEG_PERM_UID, &uid)) != 0) { 1802 nvlist_free(nvp); 1803 return (EPERM); 1804 } 1805 1806 if ((error = nvlist_lookup_uint32(nvp, 1807 ZFS_DELEG_PERM_GID, &gid)) != 0) { 1808 nvlist_free(nvp); 1809 return (EPERM); 1810 } 1811 1812 if ((error = nvlist_lookup_uint32_array(nvp, ZFS_DELEG_PERM_GROUPS, 1813 &groups, &group_cnt)) != 0) { 1814 nvlist_free(nvp); 1815 return (EPERM); 1816 } 1817 usercred = cralloc(); 1818 if ((crsetugid(usercred, uid, gid) != 0) || 1819 (crsetgroups(usercred, group_cnt, (gid_t *)groups) != 0)) { 1820 nvlist_free(nvp); 1821 crfree(usercred); 1822 return (EPERM); 1823 } 1824 nvlist_free(nvp); 1825 error = dsl_deleg_access(zc->zc_name, 1826 zfs_prop_to_name(ZFS_PROP_SHAREISCSI), usercred); 1827 crfree(usercred); 1828 return (error); 1829 } 1830 1831 /* 1832 * inputs: 1833 * zc_name name of filesystem 1834 * zc_nvlist_src{_size} nvlist of delegated permissions 1835 * zc_perm_action allow/unallow flag 1836 * 1837 * outputs: none 1838 */ 1839 static int 1840 zfs_ioc_set_fsacl(zfs_cmd_t *zc) 1841 { 1842 int error; 1843 nvlist_t *fsaclnv = NULL; 1844 1845 if ((error = get_nvlist(zc->zc_nvlist_src, zc->zc_nvlist_src_size, 1846 &fsaclnv)) != 0) 1847 return (error); 1848 1849 /* 1850 * Verify nvlist is constructed correctly 1851 */ 1852 if ((error = zfs_deleg_verify_nvlist(fsaclnv)) != 0) { 1853 nvlist_free(fsaclnv); 1854 return (EINVAL); 1855 } 1856 1857 /* 1858 * If we don't have PRIV_SYS_MOUNT, then validate 1859 * that user is allowed to hand out each permission in 1860 * the nvlist(s) 1861 */ 1862 1863 error = secpolicy_zfs(CRED()); 1864 if (error) { 1865 if (zc->zc_perm_action == B_FALSE) { 1866 error = dsl_deleg_can_allow(zc->zc_name, 1867 fsaclnv, CRED()); 1868 } else { 1869 error = dsl_deleg_can_unallow(zc->zc_name, 1870 fsaclnv, CRED()); 1871 } 1872 } 1873 1874 if (error == 0) 1875 error = dsl_deleg_set(zc->zc_name, fsaclnv, zc->zc_perm_action); 1876 1877 nvlist_free(fsaclnv); 1878 return (error); 1879 } 1880 1881 /* 1882 * inputs: 1883 * zc_name name of filesystem 1884 * 1885 * outputs: 1886 * zc_nvlist_src{_size} nvlist of delegated permissions 1887 */ 1888 static int 1889 zfs_ioc_get_fsacl(zfs_cmd_t *zc) 1890 { 1891 nvlist_t *nvp; 1892 int error; 1893 1894 if ((error = dsl_deleg_get(zc->zc_name, &nvp)) == 0) { 1895 error = put_nvlist(zc, nvp); 1896 nvlist_free(nvp); 1897 } 1898 1899 return (error); 1900 } 1901 1902 /* 1903 * inputs: 1904 * zc_name name of volume 1905 * 1906 * outputs: none 1907 */ 1908 static int 1909 zfs_ioc_create_minor(zfs_cmd_t *zc) 1910 { 1911 return (zvol_create_minor(zc->zc_name, ddi_driver_major(zfs_dip))); 1912 } 1913 1914 /* 1915 * inputs: 1916 * zc_name name of volume 1917 * 1918 * outputs: none 1919 */ 1920 static int 1921 zfs_ioc_remove_minor(zfs_cmd_t *zc) 1922 { 1923 return (zvol_remove_minor(zc->zc_name)); 1924 } 1925 1926 /* 1927 * Search the vfs list for a specified resource. Returns a pointer to it 1928 * or NULL if no suitable entry is found. The caller of this routine 1929 * is responsible for releasing the returned vfs pointer. 1930 */ 1931 static vfs_t * 1932 zfs_get_vfs(const char *resource) 1933 { 1934 struct vfs *vfsp; 1935 struct vfs *vfs_found = NULL; 1936 1937 vfs_list_read_lock(); 1938 vfsp = rootvfs; 1939 do { 1940 if (strcmp(refstr_value(vfsp->vfs_resource), resource) == 0) { 1941 VFS_HOLD(vfsp); 1942 vfs_found = vfsp; 1943 break; 1944 } 1945 vfsp = vfsp->vfs_next; 1946 } while (vfsp != rootvfs); 1947 vfs_list_unlock(); 1948 return (vfs_found); 1949 } 1950 1951 /* ARGSUSED */ 1952 static void 1953 zfs_create_cb(objset_t *os, void *arg, cred_t *cr, dmu_tx_t *tx) 1954 { 1955 zfs_creat_t *zct = arg; 1956 1957 zfs_create_fs(os, cr, zct->zct_zplprops, tx); 1958 } 1959 1960 #define ZFS_PROP_UNDEFINED ((uint64_t)-1) 1961 1962 /* 1963 * inputs: 1964 * createprops list of properties requested by creator 1965 * default_zplver zpl version to use if unspecified in createprops 1966 * fuids_ok fuids allowed in this version of the spa? 1967 * os parent objset pointer (NULL if root fs) 1968 * 1969 * outputs: 1970 * zplprops values for the zplprops we attach to the master node object 1971 * is_ci true if requested file system will be purely case-insensitive 1972 * 1973 * Determine the settings for utf8only, normalization and 1974 * casesensitivity. Specific values may have been requested by the 1975 * creator and/or we can inherit values from the parent dataset. If 1976 * the file system is of too early a vintage, a creator can not 1977 * request settings for these properties, even if the requested 1978 * setting is the default value. We don't actually want to create dsl 1979 * properties for these, so remove them from the source nvlist after 1980 * processing. 1981 */ 1982 static int 1983 zfs_fill_zplprops_impl(objset_t *os, uint64_t default_zplver, 1984 boolean_t fuids_ok, nvlist_t *createprops, nvlist_t *zplprops, 1985 boolean_t *is_ci) 1986 { 1987 uint64_t zplver = default_zplver; 1988 uint64_t sense = ZFS_PROP_UNDEFINED; 1989 uint64_t norm = ZFS_PROP_UNDEFINED; 1990 uint64_t u8 = ZFS_PROP_UNDEFINED; 1991 1992 ASSERT(zplprops != NULL); 1993 1994 /* 1995 * Pull out creator prop choices, if any. 1996 */ 1997 if (createprops) { 1998 (void) nvlist_lookup_uint64(createprops, 1999 zfs_prop_to_name(ZFS_PROP_VERSION), &zplver); 2000 (void) nvlist_lookup_uint64(createprops, 2001 zfs_prop_to_name(ZFS_PROP_NORMALIZE), &norm); 2002 (void) nvlist_remove_all(createprops, 2003 zfs_prop_to_name(ZFS_PROP_NORMALIZE)); 2004 (void) nvlist_lookup_uint64(createprops, 2005 zfs_prop_to_name(ZFS_PROP_UTF8ONLY), &u8); 2006 (void) nvlist_remove_all(createprops, 2007 zfs_prop_to_name(ZFS_PROP_UTF8ONLY)); 2008 (void) nvlist_lookup_uint64(createprops, 2009 zfs_prop_to_name(ZFS_PROP_CASE), &sense); 2010 (void) nvlist_remove_all(createprops, 2011 zfs_prop_to_name(ZFS_PROP_CASE)); 2012 } 2013 2014 /* 2015 * If the zpl version requested is whacky or the file system 2016 * or pool is version is too "young" to support normalization 2017 * and the creator tried to set a value for one of the props, 2018 * error out. 2019 */ 2020 if ((zplver < ZPL_VERSION_INITIAL || zplver > ZPL_VERSION) || 2021 (zplver >= ZPL_VERSION_FUID && !fuids_ok) || 2022 (zplver < ZPL_VERSION_NORMALIZATION && 2023 (norm != ZFS_PROP_UNDEFINED || u8 != ZFS_PROP_UNDEFINED || 2024 sense != ZFS_PROP_UNDEFINED))) 2025 return (ENOTSUP); 2026 2027 /* 2028 * Put the version in the zplprops 2029 */ 2030 VERIFY(nvlist_add_uint64(zplprops, 2031 zfs_prop_to_name(ZFS_PROP_VERSION), zplver) == 0); 2032 2033 if (norm == ZFS_PROP_UNDEFINED) 2034 VERIFY(zfs_get_zplprop(os, ZFS_PROP_NORMALIZE, &norm) == 0); 2035 VERIFY(nvlist_add_uint64(zplprops, 2036 zfs_prop_to_name(ZFS_PROP_NORMALIZE), norm) == 0); 2037 2038 /* 2039 * If we're normalizing, names must always be valid UTF-8 strings. 2040 */ 2041 if (norm) 2042 u8 = 1; 2043 if (u8 == ZFS_PROP_UNDEFINED) 2044 VERIFY(zfs_get_zplprop(os, ZFS_PROP_UTF8ONLY, &u8) == 0); 2045 VERIFY(nvlist_add_uint64(zplprops, 2046 zfs_prop_to_name(ZFS_PROP_UTF8ONLY), u8) == 0); 2047 2048 if (sense == ZFS_PROP_UNDEFINED) 2049 VERIFY(zfs_get_zplprop(os, ZFS_PROP_CASE, &sense) == 0); 2050 VERIFY(nvlist_add_uint64(zplprops, 2051 zfs_prop_to_name(ZFS_PROP_CASE), sense) == 0); 2052 2053 if (is_ci) 2054 *is_ci = (sense == ZFS_CASE_INSENSITIVE); 2055 2056 return (0); 2057 } 2058 2059 static int 2060 zfs_fill_zplprops(const char *dataset, nvlist_t *createprops, 2061 nvlist_t *zplprops, boolean_t *is_ci) 2062 { 2063 boolean_t fuids_ok = B_TRUE; 2064 uint64_t zplver = ZPL_VERSION; 2065 objset_t *os = NULL; 2066 char parentname[MAXNAMELEN]; 2067 char *cp; 2068 int error; 2069 2070 (void) strlcpy(parentname, dataset, sizeof (parentname)); 2071 cp = strrchr(parentname, '/'); 2072 ASSERT(cp != NULL); 2073 cp[0] = '\0'; 2074 2075 if (zfs_earlier_version(dataset, SPA_VERSION_FUID)) { 2076 zplver = ZPL_VERSION_FUID - 1; 2077 fuids_ok = B_FALSE; 2078 } 2079 2080 /* 2081 * Open parent object set so we can inherit zplprop values. 2082 */ 2083 if ((error = dmu_objset_open(parentname, DMU_OST_ANY, 2084 DS_MODE_USER | DS_MODE_READONLY, &os)) != 0) 2085 return (error); 2086 2087 error = zfs_fill_zplprops_impl(os, zplver, fuids_ok, createprops, 2088 zplprops, is_ci); 2089 dmu_objset_close(os); 2090 return (error); 2091 } 2092 2093 static int 2094 zfs_fill_zplprops_root(uint64_t spa_vers, nvlist_t *createprops, 2095 nvlist_t *zplprops, boolean_t *is_ci) 2096 { 2097 boolean_t fuids_ok = B_TRUE; 2098 uint64_t zplver = ZPL_VERSION; 2099 int error; 2100 2101 if (spa_vers < SPA_VERSION_FUID) { 2102 zplver = ZPL_VERSION_FUID - 1; 2103 fuids_ok = B_FALSE; 2104 } 2105 2106 error = zfs_fill_zplprops_impl(NULL, zplver, fuids_ok, createprops, 2107 zplprops, is_ci); 2108 return (error); 2109 } 2110 2111 /* 2112 * inputs: 2113 * zc_objset_type type of objset to create (fs vs zvol) 2114 * zc_name name of new objset 2115 * zc_value name of snapshot to clone from (may be empty) 2116 * zc_nvlist_src{_size} nvlist of properties to apply 2117 * 2118 * outputs: none 2119 */ 2120 static int 2121 zfs_ioc_create(zfs_cmd_t *zc) 2122 { 2123 objset_t *clone; 2124 int error = 0; 2125 zfs_creat_t zct; 2126 nvlist_t *nvprops = NULL; 2127 void (*cbfunc)(objset_t *os, void *arg, cred_t *cr, dmu_tx_t *tx); 2128 dmu_objset_type_t type = zc->zc_objset_type; 2129 2130 switch (type) { 2131 2132 case DMU_OST_ZFS: 2133 cbfunc = zfs_create_cb; 2134 break; 2135 2136 case DMU_OST_ZVOL: 2137 cbfunc = zvol_create_cb; 2138 break; 2139 2140 default: 2141 cbfunc = NULL; 2142 break; 2143 } 2144 if (strchr(zc->zc_name, '@') || 2145 strchr(zc->zc_name, '%')) 2146 return (EINVAL); 2147 2148 if (zc->zc_nvlist_src != NULL && 2149 (error = get_nvlist(zc->zc_nvlist_src, zc->zc_nvlist_src_size, 2150 &nvprops)) != 0) 2151 return (error); 2152 2153 zct.zct_zplprops = NULL; 2154 zct.zct_props = nvprops; 2155 2156 if (zc->zc_value[0] != '\0') { 2157 /* 2158 * We're creating a clone of an existing snapshot. 2159 */ 2160 zc->zc_value[sizeof (zc->zc_value) - 1] = '\0'; 2161 if (dataset_namecheck(zc->zc_value, NULL, NULL) != 0) { 2162 nvlist_free(nvprops); 2163 return (EINVAL); 2164 } 2165 2166 error = dmu_objset_open(zc->zc_value, type, 2167 DS_MODE_USER | DS_MODE_READONLY, &clone); 2168 if (error) { 2169 nvlist_free(nvprops); 2170 return (error); 2171 } 2172 2173 error = dmu_objset_create(zc->zc_name, type, clone, 0, 2174 NULL, NULL); 2175 if (error) { 2176 dmu_objset_close(clone); 2177 nvlist_free(nvprops); 2178 return (error); 2179 } 2180 dmu_objset_close(clone); 2181 } else { 2182 boolean_t is_insensitive = B_FALSE; 2183 2184 if (cbfunc == NULL) { 2185 nvlist_free(nvprops); 2186 return (EINVAL); 2187 } 2188 2189 if (type == DMU_OST_ZVOL) { 2190 uint64_t volsize, volblocksize; 2191 2192 if (nvprops == NULL || 2193 nvlist_lookup_uint64(nvprops, 2194 zfs_prop_to_name(ZFS_PROP_VOLSIZE), 2195 &volsize) != 0) { 2196 nvlist_free(nvprops); 2197 return (EINVAL); 2198 } 2199 2200 if ((error = nvlist_lookup_uint64(nvprops, 2201 zfs_prop_to_name(ZFS_PROP_VOLBLOCKSIZE), 2202 &volblocksize)) != 0 && error != ENOENT) { 2203 nvlist_free(nvprops); 2204 return (EINVAL); 2205 } 2206 2207 if (error != 0) 2208 volblocksize = zfs_prop_default_numeric( 2209 ZFS_PROP_VOLBLOCKSIZE); 2210 2211 if ((error = zvol_check_volblocksize( 2212 volblocksize)) != 0 || 2213 (error = zvol_check_volsize(volsize, 2214 volblocksize)) != 0) { 2215 nvlist_free(nvprops); 2216 return (error); 2217 } 2218 } else if (type == DMU_OST_ZFS) { 2219 int error; 2220 2221 /* 2222 * We have to have normalization and 2223 * case-folding flags correct when we do the 2224 * file system creation, so go figure them out 2225 * now. 2226 */ 2227 VERIFY(nvlist_alloc(&zct.zct_zplprops, 2228 NV_UNIQUE_NAME, KM_SLEEP) == 0); 2229 error = zfs_fill_zplprops(zc->zc_name, nvprops, 2230 zct.zct_zplprops, &is_insensitive); 2231 if (error != 0) { 2232 nvlist_free(nvprops); 2233 nvlist_free(zct.zct_zplprops); 2234 return (error); 2235 } 2236 } 2237 error = dmu_objset_create(zc->zc_name, type, NULL, 2238 is_insensitive ? DS_FLAG_CI_DATASET : 0, cbfunc, &zct); 2239 nvlist_free(zct.zct_zplprops); 2240 } 2241 2242 /* 2243 * It would be nice to do this atomically. 2244 */ 2245 if (error == 0) { 2246 if ((error = zfs_set_prop_nvlist(zc->zc_name, nvprops)) != 0) 2247 (void) dmu_objset_destroy(zc->zc_name); 2248 } 2249 nvlist_free(nvprops); 2250 return (error); 2251 } 2252 2253 /* 2254 * inputs: 2255 * zc_name name of filesystem 2256 * zc_value short name of snapshot 2257 * zc_cookie recursive flag 2258 * 2259 * outputs: none 2260 */ 2261 static int 2262 zfs_ioc_snapshot(zfs_cmd_t *zc) 2263 { 2264 nvlist_t *nvprops = NULL; 2265 int error; 2266 boolean_t recursive = zc->zc_cookie; 2267 2268 if (snapshot_namecheck(zc->zc_value, NULL, NULL) != 0) 2269 return (EINVAL); 2270 2271 if (zc->zc_nvlist_src != NULL && 2272 (error = get_nvlist(zc->zc_nvlist_src, zc->zc_nvlist_src_size, 2273 &nvprops)) != 0) 2274 return (error); 2275 2276 error = zfs_check_userprops(zc->zc_name, nvprops); 2277 if (error) 2278 goto out; 2279 2280 if (nvprops != NULL && nvlist_next_nvpair(nvprops, NULL) != NULL && 2281 zfs_earlier_version(zc->zc_name, SPA_VERSION_SNAP_PROPS)) { 2282 error = ENOTSUP; 2283 goto out; 2284 } 2285 2286 error = dmu_objset_snapshot(zc->zc_name, zc->zc_value, 2287 nvprops, recursive); 2288 2289 out: 2290 nvlist_free(nvprops); 2291 return (error); 2292 } 2293 2294 int 2295 zfs_unmount_snap(char *name, void *arg) 2296 { 2297 vfs_t *vfsp = NULL; 2298 2299 if (arg) { 2300 char *snapname = arg; 2301 int len = strlen(name) + strlen(snapname) + 2; 2302 char *buf = kmem_alloc(len, KM_SLEEP); 2303 2304 (void) strcpy(buf, name); 2305 (void) strcat(buf, "@"); 2306 (void) strcat(buf, snapname); 2307 vfsp = zfs_get_vfs(buf); 2308 kmem_free(buf, len); 2309 } else if (strchr(name, '@')) { 2310 vfsp = zfs_get_vfs(name); 2311 } 2312 2313 if (vfsp) { 2314 /* 2315 * Always force the unmount for snapshots. 2316 */ 2317 int flag = MS_FORCE; 2318 int err; 2319 2320 if ((err = vn_vfswlock(vfsp->vfs_vnodecovered)) != 0) { 2321 VFS_RELE(vfsp); 2322 return (err); 2323 } 2324 VFS_RELE(vfsp); 2325 if ((err = dounmount(vfsp, flag, kcred)) != 0) 2326 return (err); 2327 } 2328 return (0); 2329 } 2330 2331 /* 2332 * inputs: 2333 * zc_name name of filesystem 2334 * zc_value short name of snapshot 2335 * 2336 * outputs: none 2337 */ 2338 static int 2339 zfs_ioc_destroy_snaps(zfs_cmd_t *zc) 2340 { 2341 int err; 2342 2343 if (snapshot_namecheck(zc->zc_value, NULL, NULL) != 0) 2344 return (EINVAL); 2345 err = dmu_objset_find(zc->zc_name, 2346 zfs_unmount_snap, zc->zc_value, DS_FIND_CHILDREN); 2347 if (err) 2348 return (err); 2349 return (dmu_snapshots_destroy(zc->zc_name, zc->zc_value)); 2350 } 2351 2352 /* 2353 * inputs: 2354 * zc_name name of dataset to destroy 2355 * zc_objset_type type of objset 2356 * 2357 * outputs: none 2358 */ 2359 static int 2360 zfs_ioc_destroy(zfs_cmd_t *zc) 2361 { 2362 if (strchr(zc->zc_name, '@') && zc->zc_objset_type == DMU_OST_ZFS) { 2363 int err = zfs_unmount_snap(zc->zc_name, NULL); 2364 if (err) 2365 return (err); 2366 } 2367 2368 return (dmu_objset_destroy(zc->zc_name)); 2369 } 2370 2371 /* 2372 * inputs: 2373 * zc_name name of dataset to rollback (to most recent snapshot) 2374 * 2375 * outputs: none 2376 */ 2377 static int 2378 zfs_ioc_rollback(zfs_cmd_t *zc) 2379 { 2380 objset_t *os; 2381 int error; 2382 zfsvfs_t *zfsvfs = NULL; 2383 2384 /* 2385 * Get the zfsvfs for the receiving objset. There 2386 * won't be one if we're operating on a zvol, if the 2387 * objset doesn't exist yet, or is not mounted. 2388 */ 2389 error = dmu_objset_open(zc->zc_name, DMU_OST_ANY, DS_MODE_USER, &os); 2390 if (error) 2391 return (error); 2392 2393 if (dmu_objset_type(os) == DMU_OST_ZFS) { 2394 mutex_enter(&os->os->os_user_ptr_lock); 2395 zfsvfs = dmu_objset_get_user(os); 2396 if (zfsvfs != NULL) 2397 VFS_HOLD(zfsvfs->z_vfs); 2398 mutex_exit(&os->os->os_user_ptr_lock); 2399 } 2400 2401 if (zfsvfs != NULL) { 2402 char *osname; 2403 int mode; 2404 2405 osname = kmem_alloc(MAXNAMELEN, KM_SLEEP); 2406 error = zfs_suspend_fs(zfsvfs, osname, &mode); 2407 if (error == 0) { 2408 int resume_err; 2409 2410 ASSERT(strcmp(osname, zc->zc_name) == 0); 2411 error = dmu_objset_rollback(os); 2412 resume_err = zfs_resume_fs(zfsvfs, osname, mode); 2413 error = error ? error : resume_err; 2414 } else { 2415 dmu_objset_close(os); 2416 } 2417 kmem_free(osname, MAXNAMELEN); 2418 VFS_RELE(zfsvfs->z_vfs); 2419 } else { 2420 error = dmu_objset_rollback(os); 2421 } 2422 /* Note, the dmu_objset_rollback() releases the objset for us. */ 2423 2424 return (error); 2425 } 2426 2427 /* 2428 * inputs: 2429 * zc_name old name of dataset 2430 * zc_value new name of dataset 2431 * zc_cookie recursive flag (only valid for snapshots) 2432 * 2433 * outputs: none 2434 */ 2435 static int 2436 zfs_ioc_rename(zfs_cmd_t *zc) 2437 { 2438 boolean_t recursive = zc->zc_cookie & 1; 2439 2440 zc->zc_value[sizeof (zc->zc_value) - 1] = '\0'; 2441 if (dataset_namecheck(zc->zc_value, NULL, NULL) != 0 || 2442 strchr(zc->zc_value, '%')) 2443 return (EINVAL); 2444 2445 /* 2446 * Unmount snapshot unless we're doing a recursive rename, 2447 * in which case the dataset code figures out which snapshots 2448 * to unmount. 2449 */ 2450 if (!recursive && strchr(zc->zc_name, '@') != NULL && 2451 zc->zc_objset_type == DMU_OST_ZFS) { 2452 int err = zfs_unmount_snap(zc->zc_name, NULL); 2453 if (err) 2454 return (err); 2455 } 2456 return (dmu_objset_rename(zc->zc_name, zc->zc_value, recursive)); 2457 } 2458 2459 static void 2460 clear_props(char *dataset, nvlist_t *props, nvlist_t *newprops) 2461 { 2462 zfs_cmd_t *zc; 2463 nvpair_t *prop; 2464 2465 if (props == NULL) 2466 return; 2467 zc = kmem_alloc(sizeof (zfs_cmd_t), KM_SLEEP); 2468 (void) strcpy(zc->zc_name, dataset); 2469 for (prop = nvlist_next_nvpair(props, NULL); prop; 2470 prop = nvlist_next_nvpair(props, prop)) { 2471 if (newprops != NULL && 2472 nvlist_exists(newprops, nvpair_name(prop))) 2473 continue; 2474 (void) strcpy(zc->zc_value, nvpair_name(prop)); 2475 if (zfs_secpolicy_inherit(zc, CRED()) == 0) 2476 (void) zfs_ioc_inherit_prop(zc); 2477 } 2478 kmem_free(zc, sizeof (zfs_cmd_t)); 2479 } 2480 2481 /* 2482 * inputs: 2483 * zc_name name of containing filesystem 2484 * zc_nvlist_src{_size} nvlist of properties to apply 2485 * zc_value name of snapshot to create 2486 * zc_string name of clone origin (if DRR_FLAG_CLONE) 2487 * zc_cookie file descriptor to recv from 2488 * zc_begin_record the BEGIN record of the stream (not byteswapped) 2489 * zc_guid force flag 2490 * 2491 * outputs: 2492 * zc_cookie number of bytes read 2493 */ 2494 static int 2495 zfs_ioc_recv(zfs_cmd_t *zc) 2496 { 2497 file_t *fp; 2498 objset_t *os; 2499 dmu_recv_cookie_t drc; 2500 zfsvfs_t *zfsvfs = NULL; 2501 boolean_t force = (boolean_t)zc->zc_guid; 2502 int error, fd; 2503 offset_t off; 2504 nvlist_t *props = NULL; 2505 nvlist_t *origprops = NULL; 2506 objset_t *origin = NULL; 2507 char *tosnap; 2508 char tofs[ZFS_MAXNAMELEN]; 2509 2510 if (dataset_namecheck(zc->zc_value, NULL, NULL) != 0 || 2511 strchr(zc->zc_value, '@') == NULL || 2512 strchr(zc->zc_value, '%')) 2513 return (EINVAL); 2514 2515 (void) strcpy(tofs, zc->zc_value); 2516 tosnap = strchr(tofs, '@'); 2517 *tosnap = '\0'; 2518 tosnap++; 2519 2520 if (zc->zc_nvlist_src != NULL && 2521 (error = get_nvlist(zc->zc_nvlist_src, zc->zc_nvlist_src_size, 2522 &props)) != 0) 2523 return (error); 2524 2525 fd = zc->zc_cookie; 2526 fp = getf(fd); 2527 if (fp == NULL) { 2528 nvlist_free(props); 2529 return (EBADF); 2530 } 2531 2532 if (dmu_objset_open(tofs, DMU_OST_ANY, 2533 DS_MODE_USER | DS_MODE_READONLY, &os) == 0) { 2534 /* 2535 * Try to get the zfsvfs for the receiving objset. 2536 * There won't be one if we're operating on a zvol, 2537 * if the objset doesn't exist yet, or is not mounted. 2538 */ 2539 mutex_enter(&os->os->os_user_ptr_lock); 2540 if (zfsvfs = dmu_objset_get_user(os)) { 2541 if (!mutex_tryenter(&zfsvfs->z_online_recv_lock)) { 2542 mutex_exit(&os->os->os_user_ptr_lock); 2543 dmu_objset_close(os); 2544 zfsvfs = NULL; 2545 error = EBUSY; 2546 goto out; 2547 } 2548 VFS_HOLD(zfsvfs->z_vfs); 2549 } 2550 mutex_exit(&os->os->os_user_ptr_lock); 2551 2552 /* 2553 * If new properties are supplied, they are to completely 2554 * replace the existing ones, so stash away the existing ones. 2555 */ 2556 if (props) 2557 (void) dsl_prop_get_all(os, &origprops, TRUE); 2558 2559 dmu_objset_close(os); 2560 } 2561 2562 if (zc->zc_string[0]) { 2563 error = dmu_objset_open(zc->zc_string, DMU_OST_ANY, 2564 DS_MODE_USER | DS_MODE_READONLY, &origin); 2565 if (error) 2566 goto out; 2567 } 2568 2569 error = dmu_recv_begin(tofs, tosnap, &zc->zc_begin_record, 2570 force, origin, zfsvfs != NULL, &drc); 2571 if (origin) 2572 dmu_objset_close(origin); 2573 if (error) 2574 goto out; 2575 2576 /* 2577 * Reset properties. We do this before we receive the stream 2578 * so that the properties are applied to the new data. 2579 */ 2580 if (props) { 2581 clear_props(tofs, origprops, props); 2582 /* 2583 * XXX - Note, this is all-or-nothing; should be best-effort. 2584 */ 2585 (void) zfs_set_prop_nvlist(tofs, props); 2586 } 2587 2588 off = fp->f_offset; 2589 error = dmu_recv_stream(&drc, fp->f_vnode, &off); 2590 2591 if (error == 0 && zfsvfs) { 2592 char *osname; 2593 int mode; 2594 2595 /* online recv */ 2596 osname = kmem_alloc(MAXNAMELEN, KM_SLEEP); 2597 error = zfs_suspend_fs(zfsvfs, osname, &mode); 2598 if (error == 0) { 2599 int resume_err; 2600 2601 error = dmu_recv_end(&drc); 2602 resume_err = zfs_resume_fs(zfsvfs, osname, mode); 2603 error = error ? error : resume_err; 2604 } else { 2605 dmu_recv_abort_cleanup(&drc); 2606 } 2607 kmem_free(osname, MAXNAMELEN); 2608 } else if (error == 0) { 2609 error = dmu_recv_end(&drc); 2610 } 2611 2612 zc->zc_cookie = off - fp->f_offset; 2613 if (VOP_SEEK(fp->f_vnode, fp->f_offset, &off, NULL) == 0) 2614 fp->f_offset = off; 2615 2616 /* 2617 * On error, restore the original props. 2618 */ 2619 if (error && props) { 2620 clear_props(tofs, props, NULL); 2621 (void) zfs_set_prop_nvlist(tofs, origprops); 2622 } 2623 out: 2624 if (zfsvfs) { 2625 mutex_exit(&zfsvfs->z_online_recv_lock); 2626 VFS_RELE(zfsvfs->z_vfs); 2627 } 2628 nvlist_free(props); 2629 nvlist_free(origprops); 2630 releasef(fd); 2631 return (error); 2632 } 2633 2634 /* 2635 * inputs: 2636 * zc_name name of snapshot to send 2637 * zc_value short name of incremental fromsnap (may be empty) 2638 * zc_cookie file descriptor to send stream to 2639 * zc_obj fromorigin flag (mutually exclusive with zc_value) 2640 * 2641 * outputs: none 2642 */ 2643 static int 2644 zfs_ioc_send(zfs_cmd_t *zc) 2645 { 2646 objset_t *fromsnap = NULL; 2647 objset_t *tosnap; 2648 file_t *fp; 2649 int error; 2650 offset_t off; 2651 2652 error = dmu_objset_open(zc->zc_name, DMU_OST_ANY, 2653 DS_MODE_USER | DS_MODE_READONLY, &tosnap); 2654 if (error) 2655 return (error); 2656 2657 if (zc->zc_value[0] != '\0') { 2658 char *buf; 2659 char *cp; 2660 2661 buf = kmem_alloc(MAXPATHLEN, KM_SLEEP); 2662 (void) strncpy(buf, zc->zc_name, MAXPATHLEN); 2663 cp = strchr(buf, '@'); 2664 if (cp) 2665 *(cp+1) = 0; 2666 (void) strncat(buf, zc->zc_value, MAXPATHLEN); 2667 error = dmu_objset_open(buf, DMU_OST_ANY, 2668 DS_MODE_USER | DS_MODE_READONLY, &fromsnap); 2669 kmem_free(buf, MAXPATHLEN); 2670 if (error) { 2671 dmu_objset_close(tosnap); 2672 return (error); 2673 } 2674 } 2675 2676 fp = getf(zc->zc_cookie); 2677 if (fp == NULL) { 2678 dmu_objset_close(tosnap); 2679 if (fromsnap) 2680 dmu_objset_close(fromsnap); 2681 return (EBADF); 2682 } 2683 2684 off = fp->f_offset; 2685 error = dmu_sendbackup(tosnap, fromsnap, zc->zc_obj, fp->f_vnode, &off); 2686 2687 if (VOP_SEEK(fp->f_vnode, fp->f_offset, &off, NULL) == 0) 2688 fp->f_offset = off; 2689 releasef(zc->zc_cookie); 2690 if (fromsnap) 2691 dmu_objset_close(fromsnap); 2692 dmu_objset_close(tosnap); 2693 return (error); 2694 } 2695 2696 static int 2697 zfs_ioc_inject_fault(zfs_cmd_t *zc) 2698 { 2699 int id, error; 2700 2701 error = zio_inject_fault(zc->zc_name, (int)zc->zc_guid, &id, 2702 &zc->zc_inject_record); 2703 2704 if (error == 0) 2705 zc->zc_guid = (uint64_t)id; 2706 2707 return (error); 2708 } 2709 2710 static int 2711 zfs_ioc_clear_fault(zfs_cmd_t *zc) 2712 { 2713 return (zio_clear_fault((int)zc->zc_guid)); 2714 } 2715 2716 static int 2717 zfs_ioc_inject_list_next(zfs_cmd_t *zc) 2718 { 2719 int id = (int)zc->zc_guid; 2720 int error; 2721 2722 error = zio_inject_list_next(&id, zc->zc_name, sizeof (zc->zc_name), 2723 &zc->zc_inject_record); 2724 2725 zc->zc_guid = id; 2726 2727 return (error); 2728 } 2729 2730 static int 2731 zfs_ioc_error_log(zfs_cmd_t *zc) 2732 { 2733 spa_t *spa; 2734 int error; 2735 size_t count = (size_t)zc->zc_nvlist_dst_size; 2736 2737 if ((error = spa_open(zc->zc_name, &spa, FTAG)) != 0) 2738 return (error); 2739 2740 error = spa_get_errlog(spa, (void *)(uintptr_t)zc->zc_nvlist_dst, 2741 &count); 2742 if (error == 0) 2743 zc->zc_nvlist_dst_size = count; 2744 else 2745 zc->zc_nvlist_dst_size = spa_get_errlog_size(spa); 2746 2747 spa_close(spa, FTAG); 2748 2749 return (error); 2750 } 2751 2752 static int 2753 zfs_ioc_clear(zfs_cmd_t *zc) 2754 { 2755 spa_t *spa; 2756 vdev_t *vd; 2757 int error; 2758 2759 /* 2760 * On zpool clear we also fix up missing slogs 2761 */ 2762 mutex_enter(&spa_namespace_lock); 2763 spa = spa_lookup(zc->zc_name); 2764 if (spa == NULL) { 2765 mutex_exit(&spa_namespace_lock); 2766 return (EIO); 2767 } 2768 if (spa->spa_log_state == SPA_LOG_MISSING) { 2769 /* we need to let spa_open/spa_load clear the chains */ 2770 spa->spa_log_state = SPA_LOG_CLEAR; 2771 } 2772 mutex_exit(&spa_namespace_lock); 2773 2774 if ((error = spa_open(zc->zc_name, &spa, FTAG)) != 0) 2775 return (error); 2776 2777 spa_vdev_state_enter(spa); 2778 2779 if (zc->zc_guid == 0) { 2780 vd = NULL; 2781 } else { 2782 vd = spa_lookup_by_guid(spa, zc->zc_guid, B_TRUE); 2783 if (vd == NULL) { 2784 (void) spa_vdev_state_exit(spa, NULL, ENODEV); 2785 spa_close(spa, FTAG); 2786 return (ENODEV); 2787 } 2788 } 2789 2790 vdev_clear(spa, vd); 2791 2792 (void) spa_vdev_state_exit(spa, NULL, 0); 2793 2794 /* 2795 * Resume any suspended I/Os. 2796 */ 2797 if (zio_resume(spa) != 0) 2798 error = EIO; 2799 2800 spa_close(spa, FTAG); 2801 2802 return (error); 2803 } 2804 2805 /* 2806 * inputs: 2807 * zc_name name of filesystem 2808 * zc_value name of origin snapshot 2809 * 2810 * outputs: none 2811 */ 2812 static int 2813 zfs_ioc_promote(zfs_cmd_t *zc) 2814 { 2815 char *cp; 2816 2817 /* 2818 * We don't need to unmount *all* the origin fs's snapshots, but 2819 * it's easier. 2820 */ 2821 cp = strchr(zc->zc_value, '@'); 2822 if (cp) 2823 *cp = '\0'; 2824 (void) dmu_objset_find(zc->zc_value, 2825 zfs_unmount_snap, NULL, DS_FIND_SNAPSHOTS); 2826 return (dsl_dataset_promote(zc->zc_name)); 2827 } 2828 2829 /* 2830 * We don't want to have a hard dependency 2831 * against some special symbols in sharefs 2832 * nfs, and smbsrv. Determine them if needed when 2833 * the first file system is shared. 2834 * Neither sharefs, nfs or smbsrv are unloadable modules. 2835 */ 2836 int (*znfsexport_fs)(void *arg); 2837 int (*zshare_fs)(enum sharefs_sys_op, share_t *, uint32_t); 2838 int (*zsmbexport_fs)(void *arg, boolean_t add_share); 2839 2840 int zfs_nfsshare_inited; 2841 int zfs_smbshare_inited; 2842 2843 ddi_modhandle_t nfs_mod; 2844 ddi_modhandle_t sharefs_mod; 2845 ddi_modhandle_t smbsrv_mod; 2846 kmutex_t zfs_share_lock; 2847 2848 static int 2849 zfs_init_sharefs() 2850 { 2851 int error; 2852 2853 ASSERT(MUTEX_HELD(&zfs_share_lock)); 2854 /* Both NFS and SMB shares also require sharetab support. */ 2855 if (sharefs_mod == NULL && ((sharefs_mod = 2856 ddi_modopen("fs/sharefs", 2857 KRTLD_MODE_FIRST, &error)) == NULL)) { 2858 return (ENOSYS); 2859 } 2860 if (zshare_fs == NULL && ((zshare_fs = 2861 (int (*)(enum sharefs_sys_op, share_t *, uint32_t)) 2862 ddi_modsym(sharefs_mod, "sharefs_impl", &error)) == NULL)) { 2863 return (ENOSYS); 2864 } 2865 return (0); 2866 } 2867 2868 static int 2869 zfs_ioc_share(zfs_cmd_t *zc) 2870 { 2871 int error; 2872 int opcode; 2873 2874 switch (zc->zc_share.z_sharetype) { 2875 case ZFS_SHARE_NFS: 2876 case ZFS_UNSHARE_NFS: 2877 if (zfs_nfsshare_inited == 0) { 2878 mutex_enter(&zfs_share_lock); 2879 if (nfs_mod == NULL && ((nfs_mod = ddi_modopen("fs/nfs", 2880 KRTLD_MODE_FIRST, &error)) == NULL)) { 2881 mutex_exit(&zfs_share_lock); 2882 return (ENOSYS); 2883 } 2884 if (znfsexport_fs == NULL && 2885 ((znfsexport_fs = (int (*)(void *)) 2886 ddi_modsym(nfs_mod, 2887 "nfs_export", &error)) == NULL)) { 2888 mutex_exit(&zfs_share_lock); 2889 return (ENOSYS); 2890 } 2891 error = zfs_init_sharefs(); 2892 if (error) { 2893 mutex_exit(&zfs_share_lock); 2894 return (ENOSYS); 2895 } 2896 zfs_nfsshare_inited = 1; 2897 mutex_exit(&zfs_share_lock); 2898 } 2899 break; 2900 case ZFS_SHARE_SMB: 2901 case ZFS_UNSHARE_SMB: 2902 if (zfs_smbshare_inited == 0) { 2903 mutex_enter(&zfs_share_lock); 2904 if (smbsrv_mod == NULL && ((smbsrv_mod = 2905 ddi_modopen("drv/smbsrv", 2906 KRTLD_MODE_FIRST, &error)) == NULL)) { 2907 mutex_exit(&zfs_share_lock); 2908 return (ENOSYS); 2909 } 2910 if (zsmbexport_fs == NULL && ((zsmbexport_fs = 2911 (int (*)(void *, boolean_t))ddi_modsym(smbsrv_mod, 2912 "smb_server_share", &error)) == NULL)) { 2913 mutex_exit(&zfs_share_lock); 2914 return (ENOSYS); 2915 } 2916 error = zfs_init_sharefs(); 2917 if (error) { 2918 mutex_exit(&zfs_share_lock); 2919 return (ENOSYS); 2920 } 2921 zfs_smbshare_inited = 1; 2922 mutex_exit(&zfs_share_lock); 2923 } 2924 break; 2925 default: 2926 return (EINVAL); 2927 } 2928 2929 switch (zc->zc_share.z_sharetype) { 2930 case ZFS_SHARE_NFS: 2931 case ZFS_UNSHARE_NFS: 2932 if (error = 2933 znfsexport_fs((void *) 2934 (uintptr_t)zc->zc_share.z_exportdata)) 2935 return (error); 2936 break; 2937 case ZFS_SHARE_SMB: 2938 case ZFS_UNSHARE_SMB: 2939 if (error = zsmbexport_fs((void *) 2940 (uintptr_t)zc->zc_share.z_exportdata, 2941 zc->zc_share.z_sharetype == ZFS_SHARE_SMB ? 2942 B_TRUE: B_FALSE)) { 2943 return (error); 2944 } 2945 break; 2946 } 2947 2948 opcode = (zc->zc_share.z_sharetype == ZFS_SHARE_NFS || 2949 zc->zc_share.z_sharetype == ZFS_SHARE_SMB) ? 2950 SHAREFS_ADD : SHAREFS_REMOVE; 2951 2952 /* 2953 * Add or remove share from sharetab 2954 */ 2955 error = zshare_fs(opcode, 2956 (void *)(uintptr_t)zc->zc_share.z_sharedata, 2957 zc->zc_share.z_sharemax); 2958 2959 return (error); 2960 2961 } 2962 2963 ace_t full_access[] = { 2964 {(uid_t)-1, ACE_ALL_PERMS, ACE_EVERYONE, 0} 2965 }; 2966 2967 /* 2968 * Remove all ACL files in shares dir 2969 */ 2970 static int 2971 zfs_smb_acl_purge(znode_t *dzp) 2972 { 2973 zap_cursor_t zc; 2974 zap_attribute_t zap; 2975 zfsvfs_t *zfsvfs = dzp->z_zfsvfs; 2976 int error; 2977 2978 for (zap_cursor_init(&zc, zfsvfs->z_os, dzp->z_id); 2979 (error = zap_cursor_retrieve(&zc, &zap)) == 0; 2980 zap_cursor_advance(&zc)) { 2981 if ((error = VOP_REMOVE(ZTOV(dzp), zap.za_name, kcred, 2982 NULL, 0)) != 0) 2983 break; 2984 } 2985 zap_cursor_fini(&zc); 2986 return (error); 2987 } 2988 2989 static int 2990 zfs_ioc_smb_acl(zfs_cmd_t *zc) 2991 { 2992 vnode_t *vp; 2993 znode_t *dzp; 2994 vnode_t *resourcevp = NULL; 2995 znode_t *sharedir; 2996 zfsvfs_t *zfsvfs; 2997 nvlist_t *nvlist; 2998 char *src, *target; 2999 vattr_t vattr; 3000 vsecattr_t vsec; 3001 int error = 0; 3002 3003 if ((error = lookupname(zc->zc_value, UIO_SYSSPACE, 3004 NO_FOLLOW, NULL, &vp)) != 0) 3005 return (error); 3006 3007 /* Now make sure mntpnt and dataset are ZFS */ 3008 3009 if (vp->v_vfsp->vfs_fstype != zfsfstype || 3010 (strcmp((char *)refstr_value(vp->v_vfsp->vfs_resource), 3011 zc->zc_name) != 0)) { 3012 VN_RELE(vp); 3013 return (EINVAL); 3014 } 3015 3016 dzp = VTOZ(vp); 3017 zfsvfs = dzp->z_zfsvfs; 3018 ZFS_ENTER(zfsvfs); 3019 3020 /* 3021 * Create share dir if its missing. 3022 */ 3023 mutex_enter(&zfsvfs->z_lock); 3024 if (zfsvfs->z_shares_dir == 0) { 3025 dmu_tx_t *tx; 3026 3027 tx = dmu_tx_create(zfsvfs->z_os); 3028 dmu_tx_hold_zap(tx, MASTER_NODE_OBJ, TRUE, 3029 ZFS_SHARES_DIR); 3030 dmu_tx_hold_zap(tx, DMU_NEW_OBJECT, FALSE, NULL); 3031 error = dmu_tx_assign(tx, TXG_WAIT); 3032 if (error) { 3033 dmu_tx_abort(tx); 3034 } else { 3035 error = zfs_create_share_dir(zfsvfs, tx); 3036 dmu_tx_commit(tx); 3037 } 3038 if (error) { 3039 mutex_exit(&zfsvfs->z_lock); 3040 VN_RELE(vp); 3041 ZFS_EXIT(zfsvfs); 3042 return (error); 3043 } 3044 } 3045 mutex_exit(&zfsvfs->z_lock); 3046 3047 ASSERT(zfsvfs->z_shares_dir); 3048 if ((error = zfs_zget(zfsvfs, zfsvfs->z_shares_dir, &sharedir)) != 0) { 3049 VN_RELE(vp); 3050 ZFS_EXIT(zfsvfs); 3051 return (error); 3052 } 3053 3054 switch (zc->zc_cookie) { 3055 case ZFS_SMB_ACL_ADD: 3056 vattr.va_mask = AT_MODE|AT_UID|AT_GID|AT_TYPE; 3057 vattr.va_type = VREG; 3058 vattr.va_mode = S_IFREG|0777; 3059 vattr.va_uid = 0; 3060 vattr.va_gid = 0; 3061 3062 vsec.vsa_mask = VSA_ACE; 3063 vsec.vsa_aclentp = &full_access; 3064 vsec.vsa_aclentsz = sizeof (full_access); 3065 vsec.vsa_aclcnt = 1; 3066 3067 error = VOP_CREATE(ZTOV(sharedir), zc->zc_string, 3068 &vattr, EXCL, 0, &resourcevp, kcred, 0, NULL, &vsec); 3069 if (resourcevp) 3070 VN_RELE(resourcevp); 3071 break; 3072 3073 case ZFS_SMB_ACL_REMOVE: 3074 error = VOP_REMOVE(ZTOV(sharedir), zc->zc_string, kcred, 3075 NULL, 0); 3076 break; 3077 3078 case ZFS_SMB_ACL_RENAME: 3079 if ((error = get_nvlist(zc->zc_nvlist_src, 3080 zc->zc_nvlist_src_size, &nvlist)) != 0) { 3081 VN_RELE(vp); 3082 ZFS_EXIT(zfsvfs); 3083 return (error); 3084 } 3085 if (nvlist_lookup_string(nvlist, ZFS_SMB_ACL_SRC, &src) || 3086 nvlist_lookup_string(nvlist, ZFS_SMB_ACL_TARGET, 3087 &target)) { 3088 VN_RELE(vp); 3089 VN_RELE(ZTOV(sharedir)); 3090 ZFS_EXIT(zfsvfs); 3091 return (error); 3092 } 3093 error = VOP_RENAME(ZTOV(sharedir), src, ZTOV(sharedir), target, 3094 kcred, NULL, 0); 3095 nvlist_free(nvlist); 3096 break; 3097 3098 case ZFS_SMB_ACL_PURGE: 3099 error = zfs_smb_acl_purge(sharedir); 3100 break; 3101 3102 default: 3103 error = EINVAL; 3104 break; 3105 } 3106 3107 VN_RELE(vp); 3108 VN_RELE(ZTOV(sharedir)); 3109 3110 ZFS_EXIT(zfsvfs); 3111 3112 return (error); 3113 } 3114 3115 /* 3116 * pool create, destroy, and export don't log the history as part of 3117 * zfsdev_ioctl, but rather zfs_ioc_pool_create, and zfs_ioc_pool_export 3118 * do the logging of those commands. 3119 */ 3120 static zfs_ioc_vec_t zfs_ioc_vec[] = { 3121 { zfs_ioc_pool_create, zfs_secpolicy_config, POOL_NAME, B_FALSE, 3122 B_FALSE }, 3123 { zfs_ioc_pool_destroy, zfs_secpolicy_config, POOL_NAME, B_FALSE, 3124 B_FALSE }, 3125 { zfs_ioc_pool_import, zfs_secpolicy_config, POOL_NAME, B_TRUE, 3126 B_FALSE }, 3127 { zfs_ioc_pool_export, zfs_secpolicy_config, POOL_NAME, B_FALSE, 3128 B_FALSE }, 3129 { zfs_ioc_pool_configs, zfs_secpolicy_none, NO_NAME, B_FALSE, 3130 B_FALSE }, 3131 { zfs_ioc_pool_stats, zfs_secpolicy_read, POOL_NAME, B_FALSE, 3132 B_FALSE }, 3133 { zfs_ioc_pool_tryimport, zfs_secpolicy_config, NO_NAME, B_FALSE, 3134 B_FALSE }, 3135 { zfs_ioc_pool_scrub, zfs_secpolicy_config, POOL_NAME, B_TRUE, 3136 B_TRUE }, 3137 { zfs_ioc_pool_freeze, zfs_secpolicy_config, NO_NAME, B_FALSE, 3138 B_FALSE }, 3139 { zfs_ioc_pool_upgrade, zfs_secpolicy_config, POOL_NAME, B_TRUE, 3140 B_TRUE }, 3141 { zfs_ioc_pool_get_history, zfs_secpolicy_config, POOL_NAME, B_FALSE, 3142 B_FALSE }, 3143 { zfs_ioc_vdev_add, zfs_secpolicy_config, POOL_NAME, B_TRUE, 3144 B_TRUE }, 3145 { zfs_ioc_vdev_remove, zfs_secpolicy_config, POOL_NAME, B_TRUE, 3146 B_TRUE }, 3147 { zfs_ioc_vdev_set_state, zfs_secpolicy_config, POOL_NAME, B_TRUE, 3148 B_FALSE }, 3149 { zfs_ioc_vdev_attach, zfs_secpolicy_config, POOL_NAME, B_TRUE, 3150 B_TRUE }, 3151 { zfs_ioc_vdev_detach, zfs_secpolicy_config, POOL_NAME, B_TRUE, 3152 B_TRUE }, 3153 { zfs_ioc_vdev_setpath, zfs_secpolicy_config, POOL_NAME, B_FALSE, 3154 B_TRUE }, 3155 { zfs_ioc_objset_stats, zfs_secpolicy_read, DATASET_NAME, B_FALSE, 3156 B_FALSE }, 3157 { zfs_ioc_objset_zplprops, zfs_secpolicy_read, DATASET_NAME, B_FALSE, 3158 B_FALSE }, 3159 { zfs_ioc_dataset_list_next, zfs_secpolicy_read, DATASET_NAME, B_FALSE, 3160 B_FALSE }, 3161 { zfs_ioc_snapshot_list_next, zfs_secpolicy_read, DATASET_NAME, B_FALSE, 3162 B_FALSE }, 3163 { zfs_ioc_set_prop, zfs_secpolicy_none, DATASET_NAME, B_TRUE, B_TRUE }, 3164 { zfs_ioc_create_minor, zfs_secpolicy_minor, DATASET_NAME, B_FALSE, 3165 B_FALSE }, 3166 { zfs_ioc_remove_minor, zfs_secpolicy_minor, DATASET_NAME, B_FALSE, 3167 B_FALSE }, 3168 { zfs_ioc_create, zfs_secpolicy_create, DATASET_NAME, B_TRUE, B_TRUE }, 3169 { zfs_ioc_destroy, zfs_secpolicy_destroy, DATASET_NAME, B_TRUE, 3170 B_TRUE}, 3171 { zfs_ioc_rollback, zfs_secpolicy_rollback, DATASET_NAME, B_TRUE, 3172 B_TRUE }, 3173 { zfs_ioc_rename, zfs_secpolicy_rename, DATASET_NAME, B_TRUE, B_TRUE }, 3174 { zfs_ioc_recv, zfs_secpolicy_receive, DATASET_NAME, B_TRUE, B_TRUE }, 3175 { zfs_ioc_send, zfs_secpolicy_send, DATASET_NAME, B_TRUE, B_FALSE }, 3176 { zfs_ioc_inject_fault, zfs_secpolicy_inject, NO_NAME, B_FALSE, 3177 B_FALSE }, 3178 { zfs_ioc_clear_fault, zfs_secpolicy_inject, NO_NAME, B_FALSE, 3179 B_FALSE }, 3180 { zfs_ioc_inject_list_next, zfs_secpolicy_inject, NO_NAME, B_FALSE, 3181 B_FALSE }, 3182 { zfs_ioc_error_log, zfs_secpolicy_inject, POOL_NAME, B_FALSE, 3183 B_FALSE }, 3184 { zfs_ioc_clear, zfs_secpolicy_config, POOL_NAME, B_TRUE, B_FALSE }, 3185 { zfs_ioc_promote, zfs_secpolicy_promote, DATASET_NAME, B_TRUE, 3186 B_TRUE }, 3187 { zfs_ioc_destroy_snaps, zfs_secpolicy_destroy, DATASET_NAME, B_TRUE, 3188 B_TRUE }, 3189 { zfs_ioc_snapshot, zfs_secpolicy_snapshot, DATASET_NAME, B_TRUE, 3190 B_TRUE }, 3191 { zfs_ioc_dsobj_to_dsname, zfs_secpolicy_config, POOL_NAME, B_FALSE, 3192 B_FALSE }, 3193 { zfs_ioc_obj_to_path, zfs_secpolicy_config, NO_NAME, B_FALSE, 3194 B_FALSE }, 3195 { zfs_ioc_pool_set_props, zfs_secpolicy_config, POOL_NAME, B_TRUE, 3196 B_TRUE }, 3197 { zfs_ioc_pool_get_props, zfs_secpolicy_read, POOL_NAME, B_FALSE, 3198 B_FALSE }, 3199 { zfs_ioc_set_fsacl, zfs_secpolicy_fsacl, DATASET_NAME, B_TRUE, 3200 B_TRUE }, 3201 { zfs_ioc_get_fsacl, zfs_secpolicy_read, DATASET_NAME, B_FALSE, 3202 B_FALSE }, 3203 { zfs_ioc_iscsi_perm_check, zfs_secpolicy_iscsi, DATASET_NAME, B_FALSE, 3204 B_FALSE }, 3205 { zfs_ioc_share, zfs_secpolicy_share, DATASET_NAME, B_FALSE, B_FALSE }, 3206 { zfs_ioc_inherit_prop, zfs_secpolicy_inherit, DATASET_NAME, B_TRUE, 3207 B_TRUE }, 3208 { zfs_ioc_smb_acl, zfs_secpolicy_smb_acl, DATASET_NAME, B_FALSE, 3209 B_FALSE } 3210 }; 3211 3212 int 3213 pool_status_check(const char *name, zfs_ioc_namecheck_t type) 3214 { 3215 spa_t *spa; 3216 char pool[ZFS_MAXNAMELEN]; 3217 int error; 3218 3219 ASSERT(type == POOL_NAME || type == DATASET_NAME); 3220 3221 (void) strlcpy(pool, name, ZFS_MAXNAMELEN); 3222 if (type == DATASET_NAME) { 3223 char *p; 3224 3225 if ((p = strpbrk(pool, "/@")) != NULL) 3226 *p = '\0'; 3227 } 3228 3229 error = spa_open(pool, &spa, FTAG); 3230 if (error == 0) { 3231 if (spa_suspended(spa)) 3232 error = EAGAIN; 3233 spa_close(spa, FTAG); 3234 } 3235 return (error); 3236 } 3237 3238 static int 3239 zfsdev_ioctl(dev_t dev, int cmd, intptr_t arg, int flag, cred_t *cr, int *rvalp) 3240 { 3241 zfs_cmd_t *zc; 3242 uint_t vec; 3243 int error, rc; 3244 3245 if (getminor(dev) != 0) 3246 return (zvol_ioctl(dev, cmd, arg, flag, cr, rvalp)); 3247 3248 vec = cmd - ZFS_IOC; 3249 ASSERT3U(getmajor(dev), ==, ddi_driver_major(zfs_dip)); 3250 3251 if (vec >= sizeof (zfs_ioc_vec) / sizeof (zfs_ioc_vec[0])) 3252 return (EINVAL); 3253 3254 zc = kmem_zalloc(sizeof (zfs_cmd_t), KM_SLEEP); 3255 3256 error = xcopyin((void *)arg, zc, sizeof (zfs_cmd_t)); 3257 3258 if (error == 0) 3259 error = zfs_ioc_vec[vec].zvec_secpolicy(zc, cr); 3260 3261 /* 3262 * Ensure that all pool/dataset names are valid before we pass down to 3263 * the lower layers. 3264 */ 3265 if (error == 0) { 3266 zc->zc_name[sizeof (zc->zc_name) - 1] = '\0'; 3267 switch (zfs_ioc_vec[vec].zvec_namecheck) { 3268 case POOL_NAME: 3269 if (pool_namecheck(zc->zc_name, NULL, NULL) != 0) 3270 error = EINVAL; 3271 if (zfs_ioc_vec[vec].zvec_pool_check) 3272 error = pool_status_check(zc->zc_name, 3273 zfs_ioc_vec[vec].zvec_namecheck); 3274 break; 3275 3276 case DATASET_NAME: 3277 if (dataset_namecheck(zc->zc_name, NULL, NULL) != 0) 3278 error = EINVAL; 3279 if (zfs_ioc_vec[vec].zvec_pool_check) 3280 error = pool_status_check(zc->zc_name, 3281 zfs_ioc_vec[vec].zvec_namecheck); 3282 break; 3283 3284 case NO_NAME: 3285 break; 3286 } 3287 } 3288 3289 if (error == 0) 3290 error = zfs_ioc_vec[vec].zvec_func(zc); 3291 3292 rc = xcopyout(zc, (void *)arg, sizeof (zfs_cmd_t)); 3293 if (error == 0) { 3294 error = rc; 3295 if (zfs_ioc_vec[vec].zvec_his_log == B_TRUE) 3296 zfs_log_history(zc); 3297 } 3298 3299 kmem_free(zc, sizeof (zfs_cmd_t)); 3300 return (error); 3301 } 3302 3303 static int 3304 zfs_attach(dev_info_t *dip, ddi_attach_cmd_t cmd) 3305 { 3306 if (cmd != DDI_ATTACH) 3307 return (DDI_FAILURE); 3308 3309 if (ddi_create_minor_node(dip, "zfs", S_IFCHR, 0, 3310 DDI_PSEUDO, 0) == DDI_FAILURE) 3311 return (DDI_FAILURE); 3312 3313 zfs_dip = dip; 3314 3315 ddi_report_dev(dip); 3316 3317 return (DDI_SUCCESS); 3318 } 3319 3320 static int 3321 zfs_detach(dev_info_t *dip, ddi_detach_cmd_t cmd) 3322 { 3323 if (spa_busy() || zfs_busy() || zvol_busy()) 3324 return (DDI_FAILURE); 3325 3326 if (cmd != DDI_DETACH) 3327 return (DDI_FAILURE); 3328 3329 zfs_dip = NULL; 3330 3331 ddi_prop_remove_all(dip); 3332 ddi_remove_minor_node(dip, NULL); 3333 3334 return (DDI_SUCCESS); 3335 } 3336 3337 /*ARGSUSED*/ 3338 static int 3339 zfs_info(dev_info_t *dip, ddi_info_cmd_t infocmd, void *arg, void **result) 3340 { 3341 switch (infocmd) { 3342 case DDI_INFO_DEVT2DEVINFO: 3343 *result = zfs_dip; 3344 return (DDI_SUCCESS); 3345 3346 case DDI_INFO_DEVT2INSTANCE: 3347 *result = (void *)0; 3348 return (DDI_SUCCESS); 3349 } 3350 3351 return (DDI_FAILURE); 3352 } 3353 3354 /* 3355 * OK, so this is a little weird. 3356 * 3357 * /dev/zfs is the control node, i.e. minor 0. 3358 * /dev/zvol/[r]dsk/pool/dataset are the zvols, minor > 0. 3359 * 3360 * /dev/zfs has basically nothing to do except serve up ioctls, 3361 * so most of the standard driver entry points are in zvol.c. 3362 */ 3363 static struct cb_ops zfs_cb_ops = { 3364 zvol_open, /* open */ 3365 zvol_close, /* close */ 3366 zvol_strategy, /* strategy */ 3367 nodev, /* print */ 3368 zvol_dump, /* dump */ 3369 zvol_read, /* read */ 3370 zvol_write, /* write */ 3371 zfsdev_ioctl, /* ioctl */ 3372 nodev, /* devmap */ 3373 nodev, /* mmap */ 3374 nodev, /* segmap */ 3375 nochpoll, /* poll */ 3376 ddi_prop_op, /* prop_op */ 3377 NULL, /* streamtab */ 3378 D_NEW | D_MP | D_64BIT, /* Driver compatibility flag */ 3379 CB_REV, /* version */ 3380 nodev, /* async read */ 3381 nodev, /* async write */ 3382 }; 3383 3384 static struct dev_ops zfs_dev_ops = { 3385 DEVO_REV, /* version */ 3386 0, /* refcnt */ 3387 zfs_info, /* info */ 3388 nulldev, /* identify */ 3389 nulldev, /* probe */ 3390 zfs_attach, /* attach */ 3391 zfs_detach, /* detach */ 3392 nodev, /* reset */ 3393 &zfs_cb_ops, /* driver operations */ 3394 NULL, /* no bus operations */ 3395 NULL, /* power */ 3396 ddi_quiesce_not_needed, /* quiesce */ 3397 }; 3398 3399 static struct modldrv zfs_modldrv = { 3400 &mod_driverops, 3401 "ZFS storage pool", 3402 &zfs_dev_ops 3403 }; 3404 3405 static struct modlinkage modlinkage = { 3406 MODREV_1, 3407 (void *)&zfs_modlfs, 3408 (void *)&zfs_modldrv, 3409 NULL 3410 }; 3411 3412 3413 uint_t zfs_fsyncer_key; 3414 extern uint_t rrw_tsd_key; 3415 3416 int 3417 _init(void) 3418 { 3419 int error; 3420 3421 spa_init(FREAD | FWRITE); 3422 zfs_init(); 3423 zvol_init(); 3424 3425 if ((error = mod_install(&modlinkage)) != 0) { 3426 zvol_fini(); 3427 zfs_fini(); 3428 spa_fini(); 3429 return (error); 3430 } 3431 3432 tsd_create(&zfs_fsyncer_key, NULL); 3433 tsd_create(&rrw_tsd_key, NULL); 3434 3435 error = ldi_ident_from_mod(&modlinkage, &zfs_li); 3436 ASSERT(error == 0); 3437 mutex_init(&zfs_share_lock, NULL, MUTEX_DEFAULT, NULL); 3438 3439 return (0); 3440 } 3441 3442 int 3443 _fini(void) 3444 { 3445 int error; 3446 3447 if (spa_busy() || zfs_busy() || zvol_busy() || zio_injection_enabled) 3448 return (EBUSY); 3449 3450 if ((error = mod_remove(&modlinkage)) != 0) 3451 return (error); 3452 3453 zvol_fini(); 3454 zfs_fini(); 3455 spa_fini(); 3456 if (zfs_nfsshare_inited) 3457 (void) ddi_modclose(nfs_mod); 3458 if (zfs_smbshare_inited) 3459 (void) ddi_modclose(smbsrv_mod); 3460 if (zfs_nfsshare_inited || zfs_smbshare_inited) 3461 (void) ddi_modclose(sharefs_mod); 3462 3463 tsd_destroy(&zfs_fsyncer_key); 3464 ldi_ident_release(zfs_li); 3465 zfs_li = NULL; 3466 mutex_destroy(&zfs_share_lock); 3467 3468 return (error); 3469 } 3470 3471 int 3472 _info(struct modinfo *modinfop) 3473 { 3474 return (mod_info(&modlinkage, modinfop)); 3475 } 3476