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 2008 Sun Microsystems, Inc. All rights reserved. 23 * Use is subject to license terms. 24 */ 25 26 27 #include <sys/types.h> 28 #include <sys/param.h> 29 #include <sys/errno.h> 30 #include <sys/uio.h> 31 #include <sys/buf.h> 32 #include <sys/modctl.h> 33 #include <sys/open.h> 34 #include <sys/file.h> 35 #include <sys/kmem.h> 36 #include <sys/conf.h> 37 #include <sys/cmn_err.h> 38 #include <sys/stat.h> 39 #include <sys/zfs_ioctl.h> 40 #include <sys/zfs_znode.h> 41 #include <sys/zap.h> 42 #include <sys/spa.h> 43 #include <sys/spa_impl.h> 44 #include <sys/vdev.h> 45 #include <sys/vdev_impl.h> 46 #include <sys/dmu.h> 47 #include <sys/dsl_dir.h> 48 #include <sys/dsl_dataset.h> 49 #include <sys/dsl_prop.h> 50 #include <sys/dsl_deleg.h> 51 #include <sys/dmu_objset.h> 52 #include <sys/ddi.h> 53 #include <sys/sunddi.h> 54 #include <sys/sunldi.h> 55 #include <sys/policy.h> 56 #include <sys/zone.h> 57 #include <sys/nvpair.h> 58 #include <sys/pathname.h> 59 #include <sys/mount.h> 60 #include <sys/sdt.h> 61 #include <sys/fs/zfs.h> 62 #include <sys/zfs_ctldir.h> 63 #include <sys/zfs_dir.h> 64 #include <sys/zvol.h> 65 #include <sharefs/share.h> 66 #include <sys/dmu_objset.h> 67 68 #include "zfs_namecheck.h" 69 #include "zfs_prop.h" 70 #include "zfs_deleg.h" 71 72 extern struct modlfs zfs_modlfs; 73 74 extern void zfs_init(void); 75 extern void zfs_fini(void); 76 77 ldi_ident_t zfs_li = NULL; 78 dev_info_t *zfs_dip; 79 80 typedef int zfs_ioc_func_t(zfs_cmd_t *); 81 typedef int zfs_secpolicy_func_t(zfs_cmd_t *, cred_t *); 82 83 typedef struct zfs_ioc_vec { 84 zfs_ioc_func_t *zvec_func; 85 zfs_secpolicy_func_t *zvec_secpolicy; 86 enum { 87 NO_NAME, 88 POOL_NAME, 89 DATASET_NAME 90 } zvec_namecheck; 91 boolean_t zvec_his_log; 92 } zfs_ioc_vec_t; 93 94 static void clear_props(char *dataset, nvlist_t *props); 95 static int zfs_fill_zplprops_root(uint64_t, nvlist_t *, nvlist_t *, 96 boolean_t *); 97 int zfs_set_prop_nvlist(const char *, nvlist_t *); 98 99 /* _NOTE(PRINTFLIKE(4)) - this is printf-like, but lint is too whiney */ 100 void 101 __dprintf(const char *file, const char *func, int line, const char *fmt, ...) 102 { 103 const char *newfile; 104 char buf[256]; 105 va_list adx; 106 107 /* 108 * Get rid of annoying "../common/" prefix to filename. 109 */ 110 newfile = strrchr(file, '/'); 111 if (newfile != NULL) { 112 newfile = newfile + 1; /* Get rid of leading / */ 113 } else { 114 newfile = file; 115 } 116 117 va_start(adx, fmt); 118 (void) vsnprintf(buf, sizeof (buf), fmt, adx); 119 va_end(adx); 120 121 /* 122 * To get this data, use the zfs-dprintf probe as so: 123 * dtrace -q -n 'zfs-dprintf \ 124 * /stringof(arg0) == "dbuf.c"/ \ 125 * {printf("%s: %s", stringof(arg1), stringof(arg3))}' 126 * arg0 = file name 127 * arg1 = function name 128 * arg2 = line number 129 * arg3 = message 130 */ 131 DTRACE_PROBE4(zfs__dprintf, 132 char *, newfile, char *, func, int, line, char *, buf); 133 } 134 135 static void 136 history_str_free(char *buf) 137 { 138 kmem_free(buf, HIS_MAX_RECORD_LEN); 139 } 140 141 static char * 142 history_str_get(zfs_cmd_t *zc) 143 { 144 char *buf; 145 146 if (zc->zc_history == NULL) 147 return (NULL); 148 149 buf = kmem_alloc(HIS_MAX_RECORD_LEN, KM_SLEEP); 150 if (copyinstr((void *)(uintptr_t)zc->zc_history, 151 buf, HIS_MAX_RECORD_LEN, NULL) != 0) { 152 history_str_free(buf); 153 return (NULL); 154 } 155 156 buf[HIS_MAX_RECORD_LEN -1] = '\0'; 157 158 return (buf); 159 } 160 161 /* 162 * Check to see if the named dataset is currently defined as bootable 163 */ 164 static boolean_t 165 zfs_is_bootfs(const char *name) 166 { 167 spa_t *spa; 168 boolean_t ret = B_FALSE; 169 170 if (spa_open(name, &spa, FTAG) == 0) { 171 if (spa->spa_bootfs) { 172 objset_t *os; 173 174 if (dmu_objset_open(name, DMU_OST_ZFS, 175 DS_MODE_USER | DS_MODE_READONLY, &os) == 0) { 176 ret = (dmu_objset_id(os) == spa->spa_bootfs); 177 dmu_objset_close(os); 178 } 179 } 180 spa_close(spa, FTAG); 181 } 182 return (ret); 183 } 184 185 /* 186 * zfs_earlier_version 187 * 188 * Return non-zero if the spa version is less than requested version. 189 */ 190 static int 191 zfs_earlier_version(const char *name, int version) 192 { 193 spa_t *spa; 194 195 if (spa_open(name, &spa, FTAG) == 0) { 196 if (spa_version(spa) < version) { 197 spa_close(spa, FTAG); 198 return (1); 199 } 200 spa_close(spa, FTAG); 201 } 202 return (0); 203 } 204 205 /* 206 * zpl_earlier_version 207 * 208 * Return TRUE if the ZPL version is less than requested version. 209 */ 210 static boolean_t 211 zpl_earlier_version(const char *name, int version) 212 { 213 objset_t *os; 214 boolean_t rc = B_TRUE; 215 216 if (dmu_objset_open(name, DMU_OST_ANY, 217 DS_MODE_USER | DS_MODE_READONLY, &os) == 0) { 218 uint64_t zplversion; 219 220 if (zfs_get_zplprop(os, ZFS_PROP_VERSION, &zplversion) == 0) 221 rc = zplversion < version; 222 dmu_objset_close(os); 223 } 224 return (rc); 225 } 226 227 static void 228 zfs_log_history(zfs_cmd_t *zc) 229 { 230 spa_t *spa; 231 char *buf; 232 233 if ((buf = history_str_get(zc)) == NULL) 234 return; 235 236 if (spa_open(zc->zc_name, &spa, FTAG) == 0) { 237 if (spa_version(spa) >= SPA_VERSION_ZPOOL_HISTORY) 238 (void) spa_history_log(spa, buf, LOG_CMD_NORMAL); 239 spa_close(spa, FTAG); 240 } 241 history_str_free(buf); 242 } 243 244 /* 245 * Policy for top-level read operations (list pools). Requires no privileges, 246 * and can be used in the local zone, as there is no associated dataset. 247 */ 248 /* ARGSUSED */ 249 static int 250 zfs_secpolicy_none(zfs_cmd_t *zc, cred_t *cr) 251 { 252 return (0); 253 } 254 255 /* 256 * Policy for dataset read operations (list children, get statistics). Requires 257 * no privileges, but must be visible in the local zone. 258 */ 259 /* ARGSUSED */ 260 static int 261 zfs_secpolicy_read(zfs_cmd_t *zc, cred_t *cr) 262 { 263 if (INGLOBALZONE(curproc) || 264 zone_dataset_visible(zc->zc_name, NULL)) 265 return (0); 266 267 return (ENOENT); 268 } 269 270 static int 271 zfs_dozonecheck(const char *dataset, cred_t *cr) 272 { 273 uint64_t zoned; 274 int writable = 1; 275 276 /* 277 * The dataset must be visible by this zone -- check this first 278 * so they don't see EPERM on something they shouldn't know about. 279 */ 280 if (!INGLOBALZONE(curproc) && 281 !zone_dataset_visible(dataset, &writable)) 282 return (ENOENT); 283 284 if (dsl_prop_get_integer(dataset, "zoned", &zoned, NULL)) 285 return (ENOENT); 286 287 if (INGLOBALZONE(curproc)) { 288 /* 289 * If the fs is zoned, only root can access it from the 290 * global zone. 291 */ 292 if (secpolicy_zfs(cr) && zoned) 293 return (EPERM); 294 } else { 295 /* 296 * If we are in a local zone, the 'zoned' property must be set. 297 */ 298 if (!zoned) 299 return (EPERM); 300 301 /* must be writable by this zone */ 302 if (!writable) 303 return (EPERM); 304 } 305 return (0); 306 } 307 308 int 309 zfs_secpolicy_write_perms(const char *name, const char *perm, cred_t *cr) 310 { 311 int error; 312 313 error = zfs_dozonecheck(name, cr); 314 if (error == 0) { 315 error = secpolicy_zfs(cr); 316 if (error) 317 error = dsl_deleg_access(name, perm, cr); 318 } 319 return (error); 320 } 321 322 static int 323 zfs_secpolicy_setprop(const char *name, zfs_prop_t prop, cred_t *cr) 324 { 325 /* 326 * Check permissions for special properties. 327 */ 328 switch (prop) { 329 case ZFS_PROP_ZONED: 330 /* 331 * Disallow setting of 'zoned' from within a local zone. 332 */ 333 if (!INGLOBALZONE(curproc)) 334 return (EPERM); 335 break; 336 337 case ZFS_PROP_QUOTA: 338 if (!INGLOBALZONE(curproc)) { 339 uint64_t zoned; 340 char setpoint[MAXNAMELEN]; 341 /* 342 * Unprivileged users are allowed to modify the 343 * quota on things *under* (ie. contained by) 344 * the thing they own. 345 */ 346 if (dsl_prop_get_integer(name, "zoned", &zoned, 347 setpoint)) 348 return (EPERM); 349 if (!zoned || strlen(name) <= strlen(setpoint)) 350 return (EPERM); 351 } 352 break; 353 } 354 355 return (zfs_secpolicy_write_perms(name, zfs_prop_to_name(prop), cr)); 356 } 357 358 int 359 zfs_secpolicy_fsacl(zfs_cmd_t *zc, cred_t *cr) 360 { 361 int error; 362 363 error = zfs_dozonecheck(zc->zc_name, cr); 364 if (error) 365 return (error); 366 367 /* 368 * permission to set permissions will be evaluated later in 369 * dsl_deleg_can_allow() 370 */ 371 return (0); 372 } 373 374 int 375 zfs_secpolicy_rollback(zfs_cmd_t *zc, cred_t *cr) 376 { 377 int error; 378 error = zfs_secpolicy_write_perms(zc->zc_name, 379 ZFS_DELEG_PERM_ROLLBACK, cr); 380 if (error == 0) 381 error = zfs_secpolicy_write_perms(zc->zc_name, 382 ZFS_DELEG_PERM_MOUNT, cr); 383 return (error); 384 } 385 386 int 387 zfs_secpolicy_send(zfs_cmd_t *zc, cred_t *cr) 388 { 389 return (zfs_secpolicy_write_perms(zc->zc_name, 390 ZFS_DELEG_PERM_SEND, cr)); 391 } 392 393 int 394 zfs_secpolicy_share(zfs_cmd_t *zc, cred_t *cr) 395 { 396 if (!INGLOBALZONE(curproc)) 397 return (EPERM); 398 399 if (secpolicy_nfs(cr) == 0) { 400 return (0); 401 } else { 402 vnode_t *vp; 403 int error; 404 405 if ((error = lookupname(zc->zc_value, UIO_SYSSPACE, 406 NO_FOLLOW, NULL, &vp)) != 0) 407 return (error); 408 409 /* Now make sure mntpnt and dataset are ZFS */ 410 411 if (vp->v_vfsp->vfs_fstype != zfsfstype || 412 (strcmp((char *)refstr_value(vp->v_vfsp->vfs_resource), 413 zc->zc_name) != 0)) { 414 VN_RELE(vp); 415 return (EPERM); 416 } 417 418 VN_RELE(vp); 419 return (dsl_deleg_access(zc->zc_name, 420 ZFS_DELEG_PERM_SHARE, cr)); 421 } 422 } 423 424 static int 425 zfs_get_parent(const char *datasetname, char *parent, int parentsize) 426 { 427 char *cp; 428 429 /* 430 * Remove the @bla or /bla from the end of the name to get the parent. 431 */ 432 (void) strncpy(parent, datasetname, parentsize); 433 cp = strrchr(parent, '@'); 434 if (cp != NULL) { 435 cp[0] = '\0'; 436 } else { 437 cp = strrchr(parent, '/'); 438 if (cp == NULL) 439 return (ENOENT); 440 cp[0] = '\0'; 441 } 442 443 return (0); 444 } 445 446 int 447 zfs_secpolicy_destroy_perms(const char *name, cred_t *cr) 448 { 449 int error; 450 451 if ((error = zfs_secpolicy_write_perms(name, 452 ZFS_DELEG_PERM_MOUNT, cr)) != 0) 453 return (error); 454 455 return (zfs_secpolicy_write_perms(name, ZFS_DELEG_PERM_DESTROY, cr)); 456 } 457 458 static int 459 zfs_secpolicy_destroy(zfs_cmd_t *zc, cred_t *cr) 460 { 461 return (zfs_secpolicy_destroy_perms(zc->zc_name, cr)); 462 } 463 464 /* 465 * Must have sys_config privilege to check the iscsi permission 466 */ 467 /* ARGSUSED */ 468 static int 469 zfs_secpolicy_iscsi(zfs_cmd_t *zc, cred_t *cr) 470 { 471 return (secpolicy_zfs(cr)); 472 } 473 474 int 475 zfs_secpolicy_rename_perms(const char *from, const char *to, cred_t *cr) 476 { 477 char parentname[MAXNAMELEN]; 478 int error; 479 480 if ((error = zfs_secpolicy_write_perms(from, 481 ZFS_DELEG_PERM_RENAME, cr)) != 0) 482 return (error); 483 484 if ((error = zfs_secpolicy_write_perms(from, 485 ZFS_DELEG_PERM_MOUNT, cr)) != 0) 486 return (error); 487 488 if ((error = zfs_get_parent(to, parentname, 489 sizeof (parentname))) != 0) 490 return (error); 491 492 if ((error = zfs_secpolicy_write_perms(parentname, 493 ZFS_DELEG_PERM_CREATE, cr)) != 0) 494 return (error); 495 496 if ((error = zfs_secpolicy_write_perms(parentname, 497 ZFS_DELEG_PERM_MOUNT, cr)) != 0) 498 return (error); 499 500 return (error); 501 } 502 503 static int 504 zfs_secpolicy_rename(zfs_cmd_t *zc, cred_t *cr) 505 { 506 return (zfs_secpolicy_rename_perms(zc->zc_name, zc->zc_value, cr)); 507 } 508 509 static int 510 zfs_secpolicy_promote(zfs_cmd_t *zc, cred_t *cr) 511 { 512 char parentname[MAXNAMELEN]; 513 objset_t *clone; 514 int error; 515 516 error = zfs_secpolicy_write_perms(zc->zc_name, 517 ZFS_DELEG_PERM_PROMOTE, cr); 518 if (error) 519 return (error); 520 521 error = dmu_objset_open(zc->zc_name, DMU_OST_ANY, 522 DS_MODE_USER | DS_MODE_READONLY, &clone); 523 524 if (error == 0) { 525 dsl_dataset_t *pclone = NULL; 526 dsl_dir_t *dd; 527 dd = clone->os->os_dsl_dataset->ds_dir; 528 529 rw_enter(&dd->dd_pool->dp_config_rwlock, RW_READER); 530 error = dsl_dataset_hold_obj(dd->dd_pool, 531 dd->dd_phys->dd_origin_obj, FTAG, &pclone); 532 rw_exit(&dd->dd_pool->dp_config_rwlock); 533 if (error) { 534 dmu_objset_close(clone); 535 return (error); 536 } 537 538 error = zfs_secpolicy_write_perms(zc->zc_name, 539 ZFS_DELEG_PERM_MOUNT, cr); 540 541 dsl_dataset_name(pclone, parentname); 542 dmu_objset_close(clone); 543 dsl_dataset_rele(pclone, FTAG); 544 if (error == 0) 545 error = zfs_secpolicy_write_perms(parentname, 546 ZFS_DELEG_PERM_PROMOTE, cr); 547 } 548 return (error); 549 } 550 551 static int 552 zfs_secpolicy_receive(zfs_cmd_t *zc, cred_t *cr) 553 { 554 int error; 555 556 if ((error = zfs_secpolicy_write_perms(zc->zc_name, 557 ZFS_DELEG_PERM_RECEIVE, cr)) != 0) 558 return (error); 559 560 if ((error = zfs_secpolicy_write_perms(zc->zc_name, 561 ZFS_DELEG_PERM_MOUNT, cr)) != 0) 562 return (error); 563 564 return (zfs_secpolicy_write_perms(zc->zc_name, 565 ZFS_DELEG_PERM_CREATE, cr)); 566 } 567 568 int 569 zfs_secpolicy_snapshot_perms(const char *name, cred_t *cr) 570 { 571 int error; 572 573 if ((error = zfs_secpolicy_write_perms(name, 574 ZFS_DELEG_PERM_SNAPSHOT, cr)) != 0) 575 return (error); 576 577 error = zfs_secpolicy_write_perms(name, 578 ZFS_DELEG_PERM_MOUNT, cr); 579 580 return (error); 581 } 582 583 static int 584 zfs_secpolicy_snapshot(zfs_cmd_t *zc, cred_t *cr) 585 { 586 587 return (zfs_secpolicy_snapshot_perms(zc->zc_name, cr)); 588 } 589 590 static int 591 zfs_secpolicy_create(zfs_cmd_t *zc, cred_t *cr) 592 { 593 char parentname[MAXNAMELEN]; 594 int error; 595 596 if ((error = zfs_get_parent(zc->zc_name, parentname, 597 sizeof (parentname))) != 0) 598 return (error); 599 600 if (zc->zc_value[0] != '\0') { 601 if ((error = zfs_secpolicy_write_perms(zc->zc_value, 602 ZFS_DELEG_PERM_CLONE, cr)) != 0) 603 return (error); 604 } 605 606 if ((error = zfs_secpolicy_write_perms(parentname, 607 ZFS_DELEG_PERM_CREATE, cr)) != 0) 608 return (error); 609 610 error = zfs_secpolicy_write_perms(parentname, 611 ZFS_DELEG_PERM_MOUNT, cr); 612 613 return (error); 614 } 615 616 static int 617 zfs_secpolicy_umount(zfs_cmd_t *zc, cred_t *cr) 618 { 619 int error; 620 621 error = secpolicy_fs_unmount(cr, NULL); 622 if (error) { 623 error = dsl_deleg_access(zc->zc_name, ZFS_DELEG_PERM_MOUNT, cr); 624 } 625 return (error); 626 } 627 628 /* 629 * Policy for pool operations - create/destroy pools, add vdevs, etc. Requires 630 * SYS_CONFIG privilege, which is not available in a local zone. 631 */ 632 /* ARGSUSED */ 633 static int 634 zfs_secpolicy_config(zfs_cmd_t *zc, cred_t *cr) 635 { 636 if (secpolicy_sys_config(cr, B_FALSE) != 0) 637 return (EPERM); 638 639 return (0); 640 } 641 642 /* 643 * Just like zfs_secpolicy_config, except that we will check for 644 * mount permission on the dataset for permission to create/remove 645 * the minor nodes. 646 */ 647 static int 648 zfs_secpolicy_minor(zfs_cmd_t *zc, cred_t *cr) 649 { 650 if (secpolicy_sys_config(cr, B_FALSE) != 0) { 651 return (dsl_deleg_access(zc->zc_name, 652 ZFS_DELEG_PERM_MOUNT, cr)); 653 } 654 655 return (0); 656 } 657 658 /* 659 * Policy for fault injection. Requires all privileges. 660 */ 661 /* ARGSUSED */ 662 static int 663 zfs_secpolicy_inject(zfs_cmd_t *zc, cred_t *cr) 664 { 665 return (secpolicy_zinject(cr)); 666 } 667 668 static int 669 zfs_secpolicy_inherit(zfs_cmd_t *zc, cred_t *cr) 670 { 671 zfs_prop_t prop = zfs_name_to_prop(zc->zc_value); 672 673 if (prop == ZPROP_INVAL) { 674 if (!zfs_prop_user(zc->zc_value)) 675 return (EINVAL); 676 return (zfs_secpolicy_write_perms(zc->zc_name, 677 ZFS_DELEG_PERM_USERPROP, cr)); 678 } else { 679 if (!zfs_prop_inheritable(prop)) 680 return (EINVAL); 681 return (zfs_secpolicy_setprop(zc->zc_name, prop, cr)); 682 } 683 } 684 685 /* 686 * Returns the nvlist as specified by the user in the zfs_cmd_t. 687 */ 688 static int 689 get_nvlist(uint64_t nvl, uint64_t size, nvlist_t **nvp) 690 { 691 char *packed; 692 int error; 693 nvlist_t *list = NULL; 694 695 /* 696 * Read in and unpack the user-supplied nvlist. 697 */ 698 if (size == 0) 699 return (EINVAL); 700 701 packed = kmem_alloc(size, KM_SLEEP); 702 703 if ((error = xcopyin((void *)(uintptr_t)nvl, packed, size)) != 0) { 704 kmem_free(packed, size); 705 return (error); 706 } 707 708 if ((error = nvlist_unpack(packed, size, &list, 0)) != 0) { 709 kmem_free(packed, size); 710 return (error); 711 } 712 713 kmem_free(packed, size); 714 715 *nvp = list; 716 return (0); 717 } 718 719 static int 720 put_nvlist(zfs_cmd_t *zc, nvlist_t *nvl) 721 { 722 char *packed = NULL; 723 size_t size; 724 int error; 725 726 VERIFY(nvlist_size(nvl, &size, NV_ENCODE_NATIVE) == 0); 727 728 if (size > zc->zc_nvlist_dst_size) { 729 error = ENOMEM; 730 } else { 731 packed = kmem_alloc(size, KM_SLEEP); 732 VERIFY(nvlist_pack(nvl, &packed, &size, NV_ENCODE_NATIVE, 733 KM_SLEEP) == 0); 734 error = xcopyout(packed, (void *)(uintptr_t)zc->zc_nvlist_dst, 735 size); 736 kmem_free(packed, size); 737 } 738 739 zc->zc_nvlist_dst_size = size; 740 return (error); 741 } 742 743 static int 744 zfs_ioc_pool_create(zfs_cmd_t *zc) 745 { 746 int error; 747 nvlist_t *config, *props = NULL; 748 nvlist_t *rootprops = NULL; 749 nvlist_t *zplprops = NULL; 750 char *buf; 751 752 if (error = get_nvlist(zc->zc_nvlist_conf, zc->zc_nvlist_conf_size, 753 &config)) 754 return (error); 755 756 if (zc->zc_nvlist_src_size != 0 && (error = 757 get_nvlist(zc->zc_nvlist_src, zc->zc_nvlist_src_size, &props))) { 758 nvlist_free(config); 759 return (error); 760 } 761 762 if (props) { 763 nvlist_t *nvl = NULL; 764 uint64_t version = SPA_VERSION; 765 766 (void) nvlist_lookup_uint64(props, 767 zpool_prop_to_name(ZPOOL_PROP_VERSION), &version); 768 if (version < SPA_VERSION_INITIAL || version > SPA_VERSION) { 769 error = EINVAL; 770 goto pool_props_bad; 771 } 772 (void) nvlist_lookup_nvlist(props, ZPOOL_ROOTFS_PROPS, &nvl); 773 if (nvl) { 774 error = nvlist_dup(nvl, &rootprops, KM_SLEEP); 775 if (error != 0) { 776 nvlist_free(config); 777 nvlist_free(props); 778 return (error); 779 } 780 (void) nvlist_remove_all(props, ZPOOL_ROOTFS_PROPS); 781 } 782 VERIFY(nvlist_alloc(&zplprops, NV_UNIQUE_NAME, KM_SLEEP) == 0); 783 error = zfs_fill_zplprops_root(version, rootprops, 784 zplprops, NULL); 785 if (error) 786 goto pool_props_bad; 787 } 788 789 buf = history_str_get(zc); 790 791 error = spa_create(zc->zc_name, config, props, buf, zplprops); 792 793 /* 794 * Set the remaining root properties 795 */ 796 if (!error && 797 (error = zfs_set_prop_nvlist(zc->zc_name, rootprops)) != 0) 798 (void) spa_destroy(zc->zc_name); 799 800 if (buf != NULL) 801 history_str_free(buf); 802 803 pool_props_bad: 804 nvlist_free(rootprops); 805 nvlist_free(zplprops); 806 nvlist_free(config); 807 nvlist_free(props); 808 809 return (error); 810 } 811 812 static int 813 zfs_ioc_pool_destroy(zfs_cmd_t *zc) 814 { 815 int error; 816 zfs_log_history(zc); 817 error = spa_destroy(zc->zc_name); 818 return (error); 819 } 820 821 static int 822 zfs_ioc_pool_import(zfs_cmd_t *zc) 823 { 824 int error; 825 nvlist_t *config, *props = NULL; 826 uint64_t guid; 827 828 if ((error = get_nvlist(zc->zc_nvlist_conf, zc->zc_nvlist_conf_size, 829 &config)) != 0) 830 return (error); 831 832 if (zc->zc_nvlist_src_size != 0 && (error = 833 get_nvlist(zc->zc_nvlist_src, zc->zc_nvlist_src_size, &props))) { 834 nvlist_free(config); 835 return (error); 836 } 837 838 if (nvlist_lookup_uint64(config, ZPOOL_CONFIG_POOL_GUID, &guid) != 0 || 839 guid != zc->zc_guid) 840 error = EINVAL; 841 else if (zc->zc_cookie) 842 error = spa_import_faulted(zc->zc_name, config, 843 props); 844 else 845 error = spa_import(zc->zc_name, config, props); 846 847 nvlist_free(config); 848 849 if (props) 850 nvlist_free(props); 851 852 return (error); 853 } 854 855 static int 856 zfs_ioc_pool_export(zfs_cmd_t *zc) 857 { 858 int error; 859 boolean_t force = (boolean_t)zc->zc_cookie; 860 861 zfs_log_history(zc); 862 error = spa_export(zc->zc_name, NULL, force); 863 return (error); 864 } 865 866 static int 867 zfs_ioc_pool_configs(zfs_cmd_t *zc) 868 { 869 nvlist_t *configs; 870 int error; 871 872 if ((configs = spa_all_configs(&zc->zc_cookie)) == NULL) 873 return (EEXIST); 874 875 error = put_nvlist(zc, configs); 876 877 nvlist_free(configs); 878 879 return (error); 880 } 881 882 static int 883 zfs_ioc_pool_stats(zfs_cmd_t *zc) 884 { 885 nvlist_t *config; 886 int error; 887 int ret = 0; 888 889 error = spa_get_stats(zc->zc_name, &config, zc->zc_value, 890 sizeof (zc->zc_value)); 891 892 if (config != NULL) { 893 ret = put_nvlist(zc, config); 894 nvlist_free(config); 895 896 /* 897 * The config may be present even if 'error' is non-zero. 898 * In this case we return success, and preserve the real errno 899 * in 'zc_cookie'. 900 */ 901 zc->zc_cookie = error; 902 } else { 903 ret = error; 904 } 905 906 return (ret); 907 } 908 909 /* 910 * Try to import the given pool, returning pool stats as appropriate so that 911 * user land knows which devices are available and overall pool health. 912 */ 913 static int 914 zfs_ioc_pool_tryimport(zfs_cmd_t *zc) 915 { 916 nvlist_t *tryconfig, *config; 917 int error; 918 919 if ((error = get_nvlist(zc->zc_nvlist_conf, zc->zc_nvlist_conf_size, 920 &tryconfig)) != 0) 921 return (error); 922 923 config = spa_tryimport(tryconfig); 924 925 nvlist_free(tryconfig); 926 927 if (config == NULL) 928 return (EINVAL); 929 930 error = put_nvlist(zc, config); 931 nvlist_free(config); 932 933 return (error); 934 } 935 936 static int 937 zfs_ioc_pool_scrub(zfs_cmd_t *zc) 938 { 939 spa_t *spa; 940 int error; 941 942 if ((error = spa_open(zc->zc_name, &spa, FTAG)) != 0) 943 return (error); 944 945 error = spa_scrub(spa, zc->zc_cookie); 946 947 spa_close(spa, FTAG); 948 949 return (error); 950 } 951 952 static int 953 zfs_ioc_pool_freeze(zfs_cmd_t *zc) 954 { 955 spa_t *spa; 956 int error; 957 958 error = spa_open(zc->zc_name, &spa, FTAG); 959 if (error == 0) { 960 spa_freeze(spa); 961 spa_close(spa, FTAG); 962 } 963 return (error); 964 } 965 966 static int 967 zfs_ioc_pool_upgrade(zfs_cmd_t *zc) 968 { 969 spa_t *spa; 970 int error; 971 972 if ((error = spa_open(zc->zc_name, &spa, FTAG)) != 0) 973 return (error); 974 975 if (zc->zc_cookie < spa_version(spa) || zc->zc_cookie > SPA_VERSION) { 976 spa_close(spa, FTAG); 977 return (EINVAL); 978 } 979 980 spa_upgrade(spa, zc->zc_cookie); 981 spa_close(spa, FTAG); 982 983 return (error); 984 } 985 986 static int 987 zfs_ioc_pool_get_history(zfs_cmd_t *zc) 988 { 989 spa_t *spa; 990 char *hist_buf; 991 uint64_t size; 992 int error; 993 994 if ((size = zc->zc_history_len) == 0) 995 return (EINVAL); 996 997 if ((error = spa_open(zc->zc_name, &spa, FTAG)) != 0) 998 return (error); 999 1000 if (spa_version(spa) < SPA_VERSION_ZPOOL_HISTORY) { 1001 spa_close(spa, FTAG); 1002 return (ENOTSUP); 1003 } 1004 1005 hist_buf = kmem_alloc(size, KM_SLEEP); 1006 if ((error = spa_history_get(spa, &zc->zc_history_offset, 1007 &zc->zc_history_len, hist_buf)) == 0) { 1008 error = xcopyout(hist_buf, 1009 (char *)(uintptr_t)zc->zc_history, 1010 zc->zc_history_len); 1011 } 1012 1013 spa_close(spa, FTAG); 1014 kmem_free(hist_buf, size); 1015 return (error); 1016 } 1017 1018 static int 1019 zfs_ioc_dsobj_to_dsname(zfs_cmd_t *zc) 1020 { 1021 int error; 1022 1023 if (error = dsl_dsobj_to_dsname(zc->zc_name, zc->zc_obj, zc->zc_value)) 1024 return (error); 1025 1026 return (0); 1027 } 1028 1029 static int 1030 zfs_ioc_obj_to_path(zfs_cmd_t *zc) 1031 { 1032 objset_t *osp; 1033 int error; 1034 1035 if ((error = dmu_objset_open(zc->zc_name, DMU_OST_ZFS, 1036 DS_MODE_USER | DS_MODE_READONLY, &osp)) != 0) 1037 return (error); 1038 error = zfs_obj_to_path(osp, zc->zc_obj, zc->zc_value, 1039 sizeof (zc->zc_value)); 1040 dmu_objset_close(osp); 1041 1042 return (error); 1043 } 1044 1045 static int 1046 zfs_ioc_vdev_add(zfs_cmd_t *zc) 1047 { 1048 spa_t *spa; 1049 int error; 1050 nvlist_t *config, **l2cache, **spares; 1051 uint_t nl2cache = 0, nspares = 0; 1052 1053 error = spa_open(zc->zc_name, &spa, FTAG); 1054 if (error != 0) 1055 return (error); 1056 1057 error = get_nvlist(zc->zc_nvlist_conf, zc->zc_nvlist_conf_size, 1058 &config); 1059 (void) nvlist_lookup_nvlist_array(config, ZPOOL_CONFIG_L2CACHE, 1060 &l2cache, &nl2cache); 1061 1062 (void) nvlist_lookup_nvlist_array(config, ZPOOL_CONFIG_SPARES, 1063 &spares, &nspares); 1064 1065 /* 1066 * A root pool with concatenated devices is not supported. 1067 * Thus, can not add a device to a root pool. 1068 * 1069 * Intent log device can not be added to a rootpool because 1070 * during mountroot, zil is replayed, a seperated log device 1071 * can not be accessed during the mountroot time. 1072 * 1073 * l2cache and spare devices are ok to be added to a rootpool. 1074 */ 1075 if (spa->spa_bootfs != 0 && nl2cache == 0 && nspares == 0) { 1076 spa_close(spa, FTAG); 1077 return (EDOM); 1078 } 1079 1080 if (error == 0) { 1081 error = spa_vdev_add(spa, config); 1082 nvlist_free(config); 1083 } 1084 spa_close(spa, FTAG); 1085 return (error); 1086 } 1087 1088 static int 1089 zfs_ioc_vdev_remove(zfs_cmd_t *zc) 1090 { 1091 spa_t *spa; 1092 int error; 1093 1094 error = spa_open(zc->zc_name, &spa, FTAG); 1095 if (error != 0) 1096 return (error); 1097 error = spa_vdev_remove(spa, zc->zc_guid, B_FALSE); 1098 spa_close(spa, FTAG); 1099 return (error); 1100 } 1101 1102 static int 1103 zfs_ioc_vdev_set_state(zfs_cmd_t *zc) 1104 { 1105 spa_t *spa; 1106 int error; 1107 vdev_state_t newstate = VDEV_STATE_UNKNOWN; 1108 1109 if ((error = spa_open(zc->zc_name, &spa, FTAG)) != 0) 1110 return (error); 1111 switch (zc->zc_cookie) { 1112 case VDEV_STATE_ONLINE: 1113 error = vdev_online(spa, zc->zc_guid, zc->zc_obj, &newstate); 1114 break; 1115 1116 case VDEV_STATE_OFFLINE: 1117 error = vdev_offline(spa, zc->zc_guid, zc->zc_obj); 1118 break; 1119 1120 case VDEV_STATE_FAULTED: 1121 error = vdev_fault(spa, zc->zc_guid); 1122 break; 1123 1124 case VDEV_STATE_DEGRADED: 1125 error = vdev_degrade(spa, zc->zc_guid); 1126 break; 1127 1128 default: 1129 error = EINVAL; 1130 } 1131 zc->zc_cookie = newstate; 1132 spa_close(spa, FTAG); 1133 return (error); 1134 } 1135 1136 static int 1137 zfs_ioc_vdev_attach(zfs_cmd_t *zc) 1138 { 1139 spa_t *spa; 1140 int replacing = zc->zc_cookie; 1141 nvlist_t *config; 1142 int error; 1143 1144 if ((error = spa_open(zc->zc_name, &spa, FTAG)) != 0) 1145 return (error); 1146 1147 if ((error = get_nvlist(zc->zc_nvlist_conf, zc->zc_nvlist_conf_size, 1148 &config)) == 0) { 1149 error = spa_vdev_attach(spa, zc->zc_guid, config, replacing); 1150 nvlist_free(config); 1151 } 1152 1153 spa_close(spa, FTAG); 1154 return (error); 1155 } 1156 1157 static int 1158 zfs_ioc_vdev_detach(zfs_cmd_t *zc) 1159 { 1160 spa_t *spa; 1161 int error; 1162 1163 if ((error = spa_open(zc->zc_name, &spa, FTAG)) != 0) 1164 return (error); 1165 1166 error = spa_vdev_detach(spa, zc->zc_guid, B_FALSE); 1167 1168 spa_close(spa, FTAG); 1169 return (error); 1170 } 1171 1172 static int 1173 zfs_ioc_vdev_setpath(zfs_cmd_t *zc) 1174 { 1175 spa_t *spa; 1176 char *path = zc->zc_value; 1177 uint64_t guid = zc->zc_guid; 1178 int error; 1179 1180 error = spa_open(zc->zc_name, &spa, FTAG); 1181 if (error != 0) 1182 return (error); 1183 1184 error = spa_vdev_setpath(spa, guid, path); 1185 spa_close(spa, FTAG); 1186 return (error); 1187 } 1188 1189 /* 1190 * inputs: 1191 * zc_name name of filesystem 1192 * zc_nvlist_dst_size size of buffer for property nvlist 1193 * 1194 * outputs: 1195 * zc_objset_stats stats 1196 * zc_nvlist_dst property nvlist 1197 * zc_nvlist_dst_size size of property nvlist 1198 */ 1199 static int 1200 zfs_ioc_objset_stats(zfs_cmd_t *zc) 1201 { 1202 objset_t *os = NULL; 1203 int error; 1204 nvlist_t *nv; 1205 1206 if (error = dmu_objset_open(zc->zc_name, 1207 DMU_OST_ANY, DS_MODE_USER | DS_MODE_READONLY, &os)) 1208 return (error); 1209 1210 dmu_objset_fast_stat(os, &zc->zc_objset_stats); 1211 1212 if (zc->zc_nvlist_dst != 0 && 1213 (error = dsl_prop_get_all(os, &nv, FALSE)) == 0) { 1214 dmu_objset_stats(os, nv); 1215 /* 1216 * NB: zvol_get_stats() will read the objset contents, 1217 * which we aren't supposed to do with a 1218 * DS_MODE_USER hold, because it could be 1219 * inconsistent. So this is a bit of a workaround... 1220 */ 1221 if (!zc->zc_objset_stats.dds_inconsistent) { 1222 if (dmu_objset_type(os) == DMU_OST_ZVOL) 1223 VERIFY(zvol_get_stats(os, nv) == 0); 1224 } 1225 error = put_nvlist(zc, nv); 1226 nvlist_free(nv); 1227 } 1228 1229 dmu_objset_close(os); 1230 return (error); 1231 } 1232 1233 static int 1234 nvl_add_zplprop(objset_t *os, nvlist_t *props, zfs_prop_t prop) 1235 { 1236 uint64_t value; 1237 int error; 1238 1239 /* 1240 * zfs_get_zplprop() will either find a value or give us 1241 * the default value (if there is one). 1242 */ 1243 if ((error = zfs_get_zplprop(os, prop, &value)) != 0) 1244 return (error); 1245 VERIFY(nvlist_add_uint64(props, zfs_prop_to_name(prop), value) == 0); 1246 return (0); 1247 } 1248 1249 /* 1250 * inputs: 1251 * zc_name name of filesystem 1252 * zc_nvlist_dst_size size of buffer for zpl property nvlist 1253 * 1254 * outputs: 1255 * zc_nvlist_dst zpl property nvlist 1256 * zc_nvlist_dst_size size of zpl property nvlist 1257 */ 1258 static int 1259 zfs_ioc_objset_zplprops(zfs_cmd_t *zc) 1260 { 1261 objset_t *os; 1262 int err; 1263 1264 if (err = dmu_objset_open(zc->zc_name, 1265 DMU_OST_ANY, DS_MODE_USER | DS_MODE_READONLY, &os)) 1266 return (err); 1267 1268 dmu_objset_fast_stat(os, &zc->zc_objset_stats); 1269 1270 /* 1271 * NB: nvl_add_zplprop() will read the objset contents, 1272 * which we aren't supposed to do with a DS_MODE_USER 1273 * hold, because it could be inconsistent. 1274 */ 1275 if (zc->zc_nvlist_dst != NULL && 1276 !zc->zc_objset_stats.dds_inconsistent && 1277 dmu_objset_type(os) == DMU_OST_ZFS) { 1278 nvlist_t *nv; 1279 1280 VERIFY(nvlist_alloc(&nv, NV_UNIQUE_NAME, KM_SLEEP) == 0); 1281 if ((err = nvl_add_zplprop(os, nv, ZFS_PROP_VERSION)) == 0 && 1282 (err = nvl_add_zplprop(os, nv, ZFS_PROP_NORMALIZE)) == 0 && 1283 (err = nvl_add_zplprop(os, nv, ZFS_PROP_UTF8ONLY)) == 0 && 1284 (err = nvl_add_zplprop(os, nv, ZFS_PROP_CASE)) == 0) 1285 err = put_nvlist(zc, nv); 1286 nvlist_free(nv); 1287 } else { 1288 err = ENOENT; 1289 } 1290 dmu_objset_close(os); 1291 return (err); 1292 } 1293 1294 /* 1295 * inputs: 1296 * zc_name name of filesystem 1297 * zc_cookie zap cursor 1298 * zc_nvlist_dst_size size of buffer for property nvlist 1299 * 1300 * outputs: 1301 * zc_name name of next filesystem 1302 * zc_objset_stats stats 1303 * zc_nvlist_dst property nvlist 1304 * zc_nvlist_dst_size size of property nvlist 1305 */ 1306 static int 1307 zfs_ioc_dataset_list_next(zfs_cmd_t *zc) 1308 { 1309 objset_t *os; 1310 int error; 1311 char *p; 1312 1313 if (error = dmu_objset_open(zc->zc_name, 1314 DMU_OST_ANY, DS_MODE_USER | DS_MODE_READONLY, &os)) { 1315 if (error == ENOENT) 1316 error = ESRCH; 1317 return (error); 1318 } 1319 1320 p = strrchr(zc->zc_name, '/'); 1321 if (p == NULL || p[1] != '\0') 1322 (void) strlcat(zc->zc_name, "/", sizeof (zc->zc_name)); 1323 p = zc->zc_name + strlen(zc->zc_name); 1324 1325 do { 1326 error = dmu_dir_list_next(os, 1327 sizeof (zc->zc_name) - (p - zc->zc_name), p, 1328 NULL, &zc->zc_cookie); 1329 if (error == ENOENT) 1330 error = ESRCH; 1331 } while (error == 0 && !INGLOBALZONE(curproc) && 1332 !zone_dataset_visible(zc->zc_name, NULL)); 1333 dmu_objset_close(os); 1334 1335 /* 1336 * If it's a hidden dataset (ie. with a '$' in its name), don't 1337 * try to get stats for it. Userland will skip over it. 1338 */ 1339 if (error == 0 && strchr(zc->zc_name, '$') == NULL) 1340 error = zfs_ioc_objset_stats(zc); /* fill in the stats */ 1341 1342 return (error); 1343 } 1344 1345 /* 1346 * inputs: 1347 * zc_name name of filesystem 1348 * zc_cookie zap cursor 1349 * zc_nvlist_dst_size size of buffer for property nvlist 1350 * 1351 * outputs: 1352 * zc_name name of next snapshot 1353 * zc_objset_stats stats 1354 * zc_nvlist_dst property nvlist 1355 * zc_nvlist_dst_size size of property nvlist 1356 */ 1357 static int 1358 zfs_ioc_snapshot_list_next(zfs_cmd_t *zc) 1359 { 1360 objset_t *os; 1361 int error; 1362 1363 error = dmu_objset_open(zc->zc_name, 1364 DMU_OST_ANY, DS_MODE_USER | DS_MODE_READONLY, &os); 1365 if (error) 1366 return (error == ENOENT ? ESRCH : error); 1367 1368 /* 1369 * A dataset name of maximum length cannot have any snapshots, 1370 * so exit immediately. 1371 */ 1372 if (strlcat(zc->zc_name, "@", sizeof (zc->zc_name)) >= MAXNAMELEN) { 1373 dmu_objset_close(os); 1374 return (ESRCH); 1375 } 1376 1377 error = dmu_snapshot_list_next(os, 1378 sizeof (zc->zc_name) - strlen(zc->zc_name), 1379 zc->zc_name + strlen(zc->zc_name), NULL, &zc->zc_cookie, NULL); 1380 dmu_objset_close(os); 1381 if (error == 0) 1382 error = zfs_ioc_objset_stats(zc); /* fill in the stats */ 1383 else if (error == ENOENT) 1384 error = ESRCH; 1385 1386 /* if we failed, undo the @ that we tacked on to zc_name */ 1387 if (error) 1388 *strchr(zc->zc_name, '@') = '\0'; 1389 return (error); 1390 } 1391 1392 int 1393 zfs_set_prop_nvlist(const char *name, nvlist_t *nvl) 1394 { 1395 nvpair_t *elem; 1396 int error; 1397 uint64_t intval; 1398 char *strval; 1399 1400 /* 1401 * First validate permission to set all of the properties 1402 */ 1403 elem = NULL; 1404 while ((elem = nvlist_next_nvpair(nvl, elem)) != NULL) { 1405 const char *propname = nvpair_name(elem); 1406 zfs_prop_t prop = zfs_name_to_prop(propname); 1407 1408 if (prop == ZPROP_INVAL) { 1409 /* 1410 * If this is a user-defined property, it must be a 1411 * string, and there is no further validation to do. 1412 */ 1413 if (!zfs_prop_user(propname) || 1414 nvpair_type(elem) != DATA_TYPE_STRING) 1415 return (EINVAL); 1416 1417 if (error = zfs_secpolicy_write_perms(name, 1418 ZFS_DELEG_PERM_USERPROP, CRED())) 1419 return (error); 1420 continue; 1421 } 1422 1423 if ((error = zfs_secpolicy_setprop(name, prop, CRED())) != 0) 1424 return (error); 1425 1426 /* 1427 * Check that this value is valid for this pool version 1428 */ 1429 switch (prop) { 1430 case ZFS_PROP_COMPRESSION: 1431 /* 1432 * If the user specified gzip compression, make sure 1433 * the SPA supports it. We ignore any errors here since 1434 * we'll catch them later. 1435 */ 1436 if (nvpair_type(elem) == DATA_TYPE_UINT64 && 1437 nvpair_value_uint64(elem, &intval) == 0) { 1438 if (intval >= ZIO_COMPRESS_GZIP_1 && 1439 intval <= ZIO_COMPRESS_GZIP_9 && 1440 zfs_earlier_version(name, 1441 SPA_VERSION_GZIP_COMPRESSION)) 1442 return (ENOTSUP); 1443 1444 /* 1445 * If this is a bootable dataset then 1446 * verify that the compression algorithm 1447 * is supported for booting. We must return 1448 * something other than ENOTSUP since it 1449 * implies a downrev pool version. 1450 */ 1451 if (zfs_is_bootfs(name) && 1452 !BOOTFS_COMPRESS_VALID(intval)) 1453 return (ERANGE); 1454 } 1455 break; 1456 1457 case ZFS_PROP_COPIES: 1458 if (zfs_earlier_version(name, 1459 SPA_VERSION_DITTO_BLOCKS)) 1460 return (ENOTSUP); 1461 break; 1462 1463 case ZFS_PROP_SHARESMB: 1464 if (zpl_earlier_version(name, ZPL_VERSION_FUID)) 1465 return (ENOTSUP); 1466 break; 1467 } 1468 } 1469 1470 elem = NULL; 1471 while ((elem = nvlist_next_nvpair(nvl, elem)) != NULL) { 1472 const char *propname = nvpair_name(elem); 1473 zfs_prop_t prop = zfs_name_to_prop(propname); 1474 1475 if (prop == ZPROP_INVAL) { 1476 VERIFY(nvpair_value_string(elem, &strval) == 0); 1477 error = dsl_prop_set(name, propname, 1, 1478 strlen(strval) + 1, strval); 1479 if (error == 0) 1480 continue; 1481 else 1482 return (error); 1483 } 1484 1485 switch (prop) { 1486 case ZFS_PROP_QUOTA: 1487 if ((error = nvpair_value_uint64(elem, &intval)) != 0 || 1488 (error = dsl_dir_set_quota(name, intval)) != 0) 1489 return (error); 1490 break; 1491 1492 case ZFS_PROP_REFQUOTA: 1493 if ((error = nvpair_value_uint64(elem, &intval)) != 0 || 1494 (error = dsl_dataset_set_quota(name, intval)) != 0) 1495 return (error); 1496 break; 1497 1498 case ZFS_PROP_RESERVATION: 1499 if ((error = nvpair_value_uint64(elem, &intval)) != 0 || 1500 (error = dsl_dir_set_reservation(name, 1501 intval)) != 0) 1502 return (error); 1503 break; 1504 1505 case ZFS_PROP_REFRESERVATION: 1506 if ((error = nvpair_value_uint64(elem, &intval)) != 0 || 1507 (error = dsl_dataset_set_reservation(name, 1508 intval)) != 0) 1509 return (error); 1510 break; 1511 1512 case ZFS_PROP_VOLSIZE: 1513 if ((error = nvpair_value_uint64(elem, &intval)) != 0 || 1514 (error = zvol_set_volsize(name, 1515 ddi_driver_major(zfs_dip), intval)) != 0) 1516 return (error); 1517 break; 1518 1519 case ZFS_PROP_VOLBLOCKSIZE: 1520 if ((error = nvpair_value_uint64(elem, &intval)) != 0 || 1521 (error = zvol_set_volblocksize(name, intval)) != 0) 1522 return (error); 1523 break; 1524 1525 case ZFS_PROP_VERSION: 1526 if ((error = nvpair_value_uint64(elem, &intval)) != 0 || 1527 (error = zfs_set_version(name, intval)) != 0) 1528 return (error); 1529 break; 1530 1531 default: 1532 if (nvpair_type(elem) == DATA_TYPE_STRING) { 1533 if (zfs_prop_get_type(prop) != 1534 PROP_TYPE_STRING) 1535 return (EINVAL); 1536 VERIFY(nvpair_value_string(elem, &strval) == 0); 1537 if ((error = dsl_prop_set(name, 1538 nvpair_name(elem), 1, strlen(strval) + 1, 1539 strval)) != 0) 1540 return (error); 1541 } else if (nvpair_type(elem) == DATA_TYPE_UINT64) { 1542 const char *unused; 1543 1544 VERIFY(nvpair_value_uint64(elem, &intval) == 0); 1545 1546 switch (zfs_prop_get_type(prop)) { 1547 case PROP_TYPE_NUMBER: 1548 break; 1549 case PROP_TYPE_STRING: 1550 return (EINVAL); 1551 case PROP_TYPE_INDEX: 1552 if (zfs_prop_index_to_string(prop, 1553 intval, &unused) != 0) 1554 return (EINVAL); 1555 break; 1556 default: 1557 cmn_err(CE_PANIC, 1558 "unknown property type"); 1559 break; 1560 } 1561 1562 if ((error = dsl_prop_set(name, propname, 1563 8, 1, &intval)) != 0) 1564 return (error); 1565 } else { 1566 return (EINVAL); 1567 } 1568 break; 1569 } 1570 } 1571 1572 return (0); 1573 } 1574 1575 /* 1576 * inputs: 1577 * zc_name name of filesystem 1578 * zc_value name of property to inherit 1579 * zc_nvlist_src{_size} nvlist of properties to apply 1580 * zc_cookie clear existing local props? 1581 * 1582 * outputs: none 1583 */ 1584 static int 1585 zfs_ioc_set_prop(zfs_cmd_t *zc) 1586 { 1587 nvlist_t *nvl; 1588 int error; 1589 1590 if ((error = get_nvlist(zc->zc_nvlist_src, zc->zc_nvlist_src_size, 1591 &nvl)) != 0) 1592 return (error); 1593 1594 if (zc->zc_cookie) { 1595 nvlist_t *origprops; 1596 objset_t *os; 1597 1598 if (dmu_objset_open(zc->zc_name, DMU_OST_ANY, 1599 DS_MODE_USER | DS_MODE_READONLY, &os) == 0) { 1600 if (dsl_prop_get_all(os, &origprops, TRUE) == 0) { 1601 clear_props(zc->zc_name, origprops); 1602 nvlist_free(origprops); 1603 } 1604 dmu_objset_close(os); 1605 } 1606 1607 } 1608 1609 error = zfs_set_prop_nvlist(zc->zc_name, nvl); 1610 1611 nvlist_free(nvl); 1612 return (error); 1613 } 1614 1615 /* 1616 * inputs: 1617 * zc_name name of filesystem 1618 * zc_value name of property to inherit 1619 * 1620 * outputs: none 1621 */ 1622 static int 1623 zfs_ioc_inherit_prop(zfs_cmd_t *zc) 1624 { 1625 /* the property name has been validated by zfs_secpolicy_inherit() */ 1626 return (dsl_prop_set(zc->zc_name, zc->zc_value, 0, 0, NULL)); 1627 } 1628 1629 static int 1630 zfs_ioc_pool_set_props(zfs_cmd_t *zc) 1631 { 1632 nvlist_t *props; 1633 spa_t *spa; 1634 int error; 1635 1636 if ((error = get_nvlist(zc->zc_nvlist_src, zc->zc_nvlist_src_size, 1637 &props))) 1638 return (error); 1639 1640 if ((error = spa_open(zc->zc_name, &spa, FTAG)) != 0) { 1641 nvlist_free(props); 1642 return (error); 1643 } 1644 1645 error = spa_prop_set(spa, props); 1646 1647 nvlist_free(props); 1648 spa_close(spa, FTAG); 1649 1650 return (error); 1651 } 1652 1653 static int 1654 zfs_ioc_pool_get_props(zfs_cmd_t *zc) 1655 { 1656 spa_t *spa; 1657 int error; 1658 nvlist_t *nvp = NULL; 1659 1660 if ((error = spa_open(zc->zc_name, &spa, FTAG)) != 0) 1661 return (error); 1662 1663 error = spa_prop_get(spa, &nvp); 1664 1665 if (error == 0 && zc->zc_nvlist_dst != NULL) 1666 error = put_nvlist(zc, nvp); 1667 else 1668 error = EFAULT; 1669 1670 spa_close(spa, FTAG); 1671 1672 if (nvp) 1673 nvlist_free(nvp); 1674 return (error); 1675 } 1676 1677 static int 1678 zfs_ioc_iscsi_perm_check(zfs_cmd_t *zc) 1679 { 1680 nvlist_t *nvp; 1681 int error; 1682 uint32_t uid; 1683 uint32_t gid; 1684 uint32_t *groups; 1685 uint_t group_cnt; 1686 cred_t *usercred; 1687 1688 if ((error = get_nvlist(zc->zc_nvlist_src, zc->zc_nvlist_src_size, 1689 &nvp)) != 0) { 1690 return (error); 1691 } 1692 1693 if ((error = nvlist_lookup_uint32(nvp, 1694 ZFS_DELEG_PERM_UID, &uid)) != 0) { 1695 nvlist_free(nvp); 1696 return (EPERM); 1697 } 1698 1699 if ((error = nvlist_lookup_uint32(nvp, 1700 ZFS_DELEG_PERM_GID, &gid)) != 0) { 1701 nvlist_free(nvp); 1702 return (EPERM); 1703 } 1704 1705 if ((error = nvlist_lookup_uint32_array(nvp, ZFS_DELEG_PERM_GROUPS, 1706 &groups, &group_cnt)) != 0) { 1707 nvlist_free(nvp); 1708 return (EPERM); 1709 } 1710 usercred = cralloc(); 1711 if ((crsetugid(usercred, uid, gid) != 0) || 1712 (crsetgroups(usercred, group_cnt, (gid_t *)groups) != 0)) { 1713 nvlist_free(nvp); 1714 crfree(usercred); 1715 return (EPERM); 1716 } 1717 nvlist_free(nvp); 1718 error = dsl_deleg_access(zc->zc_name, 1719 zfs_prop_to_name(ZFS_PROP_SHAREISCSI), usercred); 1720 crfree(usercred); 1721 return (error); 1722 } 1723 1724 /* 1725 * inputs: 1726 * zc_name name of filesystem 1727 * zc_nvlist_src{_size} nvlist of delegated permissions 1728 * zc_perm_action allow/unallow flag 1729 * 1730 * outputs: none 1731 */ 1732 static int 1733 zfs_ioc_set_fsacl(zfs_cmd_t *zc) 1734 { 1735 int error; 1736 nvlist_t *fsaclnv = NULL; 1737 1738 if ((error = get_nvlist(zc->zc_nvlist_src, zc->zc_nvlist_src_size, 1739 &fsaclnv)) != 0) 1740 return (error); 1741 1742 /* 1743 * Verify nvlist is constructed correctly 1744 */ 1745 if ((error = zfs_deleg_verify_nvlist(fsaclnv)) != 0) { 1746 nvlist_free(fsaclnv); 1747 return (EINVAL); 1748 } 1749 1750 /* 1751 * If we don't have PRIV_SYS_MOUNT, then validate 1752 * that user is allowed to hand out each permission in 1753 * the nvlist(s) 1754 */ 1755 1756 error = secpolicy_zfs(CRED()); 1757 if (error) { 1758 if (zc->zc_perm_action == B_FALSE) { 1759 error = dsl_deleg_can_allow(zc->zc_name, 1760 fsaclnv, CRED()); 1761 } else { 1762 error = dsl_deleg_can_unallow(zc->zc_name, 1763 fsaclnv, CRED()); 1764 } 1765 } 1766 1767 if (error == 0) 1768 error = dsl_deleg_set(zc->zc_name, fsaclnv, zc->zc_perm_action); 1769 1770 nvlist_free(fsaclnv); 1771 return (error); 1772 } 1773 1774 /* 1775 * inputs: 1776 * zc_name name of filesystem 1777 * 1778 * outputs: 1779 * zc_nvlist_src{_size} nvlist of delegated permissions 1780 */ 1781 static int 1782 zfs_ioc_get_fsacl(zfs_cmd_t *zc) 1783 { 1784 nvlist_t *nvp; 1785 int error; 1786 1787 if ((error = dsl_deleg_get(zc->zc_name, &nvp)) == 0) { 1788 error = put_nvlist(zc, nvp); 1789 nvlist_free(nvp); 1790 } 1791 1792 return (error); 1793 } 1794 1795 /* 1796 * inputs: 1797 * zc_name name of volume 1798 * 1799 * outputs: none 1800 */ 1801 static int 1802 zfs_ioc_create_minor(zfs_cmd_t *zc) 1803 { 1804 return (zvol_create_minor(zc->zc_name, ddi_driver_major(zfs_dip))); 1805 } 1806 1807 /* 1808 * inputs: 1809 * zc_name name of volume 1810 * 1811 * outputs: none 1812 */ 1813 static int 1814 zfs_ioc_remove_minor(zfs_cmd_t *zc) 1815 { 1816 return (zvol_remove_minor(zc->zc_name)); 1817 } 1818 1819 /* 1820 * Search the vfs list for a specified resource. Returns a pointer to it 1821 * or NULL if no suitable entry is found. The caller of this routine 1822 * is responsible for releasing the returned vfs pointer. 1823 */ 1824 static vfs_t * 1825 zfs_get_vfs(const char *resource) 1826 { 1827 struct vfs *vfsp; 1828 struct vfs *vfs_found = NULL; 1829 1830 vfs_list_read_lock(); 1831 vfsp = rootvfs; 1832 do { 1833 if (strcmp(refstr_value(vfsp->vfs_resource), resource) == 0) { 1834 VFS_HOLD(vfsp); 1835 vfs_found = vfsp; 1836 break; 1837 } 1838 vfsp = vfsp->vfs_next; 1839 } while (vfsp != rootvfs); 1840 vfs_list_unlock(); 1841 return (vfs_found); 1842 } 1843 1844 /* ARGSUSED */ 1845 static void 1846 zfs_create_cb(objset_t *os, void *arg, cred_t *cr, dmu_tx_t *tx) 1847 { 1848 zfs_creat_t *zct = arg; 1849 1850 zfs_create_fs(os, cr, zct->zct_zplprops, tx); 1851 } 1852 1853 #define ZFS_PROP_UNDEFINED ((uint64_t)-1) 1854 1855 /* 1856 * inputs: 1857 * createprops list of properties requested by creator 1858 * default_zplver zpl version to use if unspecified in createprops 1859 * fuids_ok fuids allowed in this version of the spa? 1860 * os parent objset pointer (NULL if root fs) 1861 * 1862 * outputs: 1863 * zplprops values for the zplprops we attach to the master node object 1864 * is_ci true if requested file system will be purely case-insensitive 1865 * 1866 * Determine the settings for utf8only, normalization and 1867 * casesensitivity. Specific values may have been requested by the 1868 * creator and/or we can inherit values from the parent dataset. If 1869 * the file system is of too early a vintage, a creator can not 1870 * request settings for these properties, even if the requested 1871 * setting is the default value. We don't actually want to create dsl 1872 * properties for these, so remove them from the source nvlist after 1873 * processing. 1874 */ 1875 static int 1876 zfs_fill_zplprops_impl(objset_t *os, uint64_t default_zplver, 1877 boolean_t fuids_ok, nvlist_t *createprops, nvlist_t *zplprops, 1878 boolean_t *is_ci) 1879 { 1880 uint64_t zplver = default_zplver; 1881 uint64_t sense = ZFS_PROP_UNDEFINED; 1882 uint64_t norm = ZFS_PROP_UNDEFINED; 1883 uint64_t u8 = ZFS_PROP_UNDEFINED; 1884 1885 ASSERT(zplprops != NULL); 1886 1887 /* 1888 * Pull out creator prop choices, if any. 1889 */ 1890 if (createprops) { 1891 (void) nvlist_lookup_uint64(createprops, 1892 zfs_prop_to_name(ZFS_PROP_VERSION), &zplver); 1893 (void) nvlist_lookup_uint64(createprops, 1894 zfs_prop_to_name(ZFS_PROP_NORMALIZE), &norm); 1895 (void) nvlist_remove_all(createprops, 1896 zfs_prop_to_name(ZFS_PROP_NORMALIZE)); 1897 (void) nvlist_lookup_uint64(createprops, 1898 zfs_prop_to_name(ZFS_PROP_UTF8ONLY), &u8); 1899 (void) nvlist_remove_all(createprops, 1900 zfs_prop_to_name(ZFS_PROP_UTF8ONLY)); 1901 (void) nvlist_lookup_uint64(createprops, 1902 zfs_prop_to_name(ZFS_PROP_CASE), &sense); 1903 (void) nvlist_remove_all(createprops, 1904 zfs_prop_to_name(ZFS_PROP_CASE)); 1905 } 1906 1907 /* 1908 * If the zpl version requested is whacky or the file system 1909 * or pool is version is too "young" to support normalization 1910 * and the creator tried to set a value for one of the props, 1911 * error out. 1912 */ 1913 if ((zplver < ZPL_VERSION_INITIAL || zplver > ZPL_VERSION) || 1914 (zplver >= ZPL_VERSION_FUID && !fuids_ok) || 1915 (zplver < ZPL_VERSION_NORMALIZATION && 1916 (norm != ZFS_PROP_UNDEFINED || u8 != ZFS_PROP_UNDEFINED || 1917 sense != ZFS_PROP_UNDEFINED))) 1918 return (ENOTSUP); 1919 1920 /* 1921 * Put the version in the zplprops 1922 */ 1923 VERIFY(nvlist_add_uint64(zplprops, 1924 zfs_prop_to_name(ZFS_PROP_VERSION), zplver) == 0); 1925 1926 if (norm == ZFS_PROP_UNDEFINED) 1927 VERIFY(zfs_get_zplprop(os, ZFS_PROP_NORMALIZE, &norm) == 0); 1928 VERIFY(nvlist_add_uint64(zplprops, 1929 zfs_prop_to_name(ZFS_PROP_NORMALIZE), norm) == 0); 1930 1931 /* 1932 * If we're normalizing, names must always be valid UTF-8 strings. 1933 */ 1934 if (norm) 1935 u8 = 1; 1936 if (u8 == ZFS_PROP_UNDEFINED) 1937 VERIFY(zfs_get_zplprop(os, ZFS_PROP_UTF8ONLY, &u8) == 0); 1938 VERIFY(nvlist_add_uint64(zplprops, 1939 zfs_prop_to_name(ZFS_PROP_UTF8ONLY), u8) == 0); 1940 1941 if (sense == ZFS_PROP_UNDEFINED) 1942 VERIFY(zfs_get_zplprop(os, ZFS_PROP_CASE, &sense) == 0); 1943 VERIFY(nvlist_add_uint64(zplprops, 1944 zfs_prop_to_name(ZFS_PROP_CASE), sense) == 0); 1945 1946 if (is_ci) 1947 *is_ci = (sense == ZFS_CASE_INSENSITIVE); 1948 1949 return (0); 1950 } 1951 1952 static int 1953 zfs_fill_zplprops(const char *dataset, nvlist_t *createprops, 1954 nvlist_t *zplprops, boolean_t *is_ci) 1955 { 1956 boolean_t fuids_ok = B_TRUE; 1957 uint64_t zplver = ZPL_VERSION; 1958 objset_t *os = NULL; 1959 char parentname[MAXNAMELEN]; 1960 char *cp; 1961 int error; 1962 1963 (void) strlcpy(parentname, dataset, sizeof (parentname)); 1964 cp = strrchr(parentname, '/'); 1965 ASSERT(cp != NULL); 1966 cp[0] = '\0'; 1967 1968 if (zfs_earlier_version(dataset, SPA_VERSION_FUID)) { 1969 zplver = ZPL_VERSION_FUID - 1; 1970 fuids_ok = B_FALSE; 1971 } 1972 1973 /* 1974 * Open parent object set so we can inherit zplprop values. 1975 */ 1976 if ((error = dmu_objset_open(parentname, DMU_OST_ANY, 1977 DS_MODE_USER | DS_MODE_READONLY, &os)) != 0) 1978 return (error); 1979 1980 error = zfs_fill_zplprops_impl(os, zplver, fuids_ok, createprops, 1981 zplprops, is_ci); 1982 dmu_objset_close(os); 1983 return (error); 1984 } 1985 1986 static int 1987 zfs_fill_zplprops_root(uint64_t spa_vers, nvlist_t *createprops, 1988 nvlist_t *zplprops, boolean_t *is_ci) 1989 { 1990 boolean_t fuids_ok = B_TRUE; 1991 uint64_t zplver = ZPL_VERSION; 1992 int error; 1993 1994 if (spa_vers < SPA_VERSION_FUID) { 1995 zplver = ZPL_VERSION_FUID - 1; 1996 fuids_ok = B_FALSE; 1997 } 1998 1999 error = zfs_fill_zplprops_impl(NULL, zplver, fuids_ok, createprops, 2000 zplprops, is_ci); 2001 return (error); 2002 } 2003 2004 /* 2005 * inputs: 2006 * zc_objset_type type of objset to create (fs vs zvol) 2007 * zc_name name of new objset 2008 * zc_value name of snapshot to clone from (may be empty) 2009 * zc_nvlist_src{_size} nvlist of properties to apply 2010 * 2011 * outputs: none 2012 */ 2013 static int 2014 zfs_ioc_create(zfs_cmd_t *zc) 2015 { 2016 objset_t *clone; 2017 int error = 0; 2018 zfs_creat_t zct; 2019 nvlist_t *nvprops = NULL; 2020 void (*cbfunc)(objset_t *os, void *arg, cred_t *cr, dmu_tx_t *tx); 2021 dmu_objset_type_t type = zc->zc_objset_type; 2022 2023 switch (type) { 2024 2025 case DMU_OST_ZFS: 2026 cbfunc = zfs_create_cb; 2027 break; 2028 2029 case DMU_OST_ZVOL: 2030 cbfunc = zvol_create_cb; 2031 break; 2032 2033 default: 2034 cbfunc = NULL; 2035 break; 2036 } 2037 if (strchr(zc->zc_name, '@') || 2038 strchr(zc->zc_name, '%')) 2039 return (EINVAL); 2040 2041 if (zc->zc_nvlist_src != NULL && 2042 (error = get_nvlist(zc->zc_nvlist_src, zc->zc_nvlist_src_size, 2043 &nvprops)) != 0) 2044 return (error); 2045 2046 zct.zct_zplprops = NULL; 2047 zct.zct_props = nvprops; 2048 2049 if (zc->zc_value[0] != '\0') { 2050 /* 2051 * We're creating a clone of an existing snapshot. 2052 */ 2053 zc->zc_value[sizeof (zc->zc_value) - 1] = '\0'; 2054 if (dataset_namecheck(zc->zc_value, NULL, NULL) != 0) { 2055 nvlist_free(nvprops); 2056 return (EINVAL); 2057 } 2058 2059 error = dmu_objset_open(zc->zc_value, type, 2060 DS_MODE_USER | DS_MODE_READONLY, &clone); 2061 if (error) { 2062 nvlist_free(nvprops); 2063 return (error); 2064 } 2065 2066 error = dmu_objset_create(zc->zc_name, type, clone, 0, 2067 NULL, NULL); 2068 if (error) { 2069 dmu_objset_close(clone); 2070 nvlist_free(nvprops); 2071 return (error); 2072 } 2073 dmu_objset_close(clone); 2074 } else { 2075 boolean_t is_insensitive = B_FALSE; 2076 2077 if (cbfunc == NULL) { 2078 nvlist_free(nvprops); 2079 return (EINVAL); 2080 } 2081 2082 if (type == DMU_OST_ZVOL) { 2083 uint64_t volsize, volblocksize; 2084 2085 if (nvprops == NULL || 2086 nvlist_lookup_uint64(nvprops, 2087 zfs_prop_to_name(ZFS_PROP_VOLSIZE), 2088 &volsize) != 0) { 2089 nvlist_free(nvprops); 2090 return (EINVAL); 2091 } 2092 2093 if ((error = nvlist_lookup_uint64(nvprops, 2094 zfs_prop_to_name(ZFS_PROP_VOLBLOCKSIZE), 2095 &volblocksize)) != 0 && error != ENOENT) { 2096 nvlist_free(nvprops); 2097 return (EINVAL); 2098 } 2099 2100 if (error != 0) 2101 volblocksize = zfs_prop_default_numeric( 2102 ZFS_PROP_VOLBLOCKSIZE); 2103 2104 if ((error = zvol_check_volblocksize( 2105 volblocksize)) != 0 || 2106 (error = zvol_check_volsize(volsize, 2107 volblocksize)) != 0) { 2108 nvlist_free(nvprops); 2109 return (error); 2110 } 2111 } else if (type == DMU_OST_ZFS) { 2112 int error; 2113 2114 /* 2115 * We have to have normalization and 2116 * case-folding flags correct when we do the 2117 * file system creation, so go figure them out 2118 * now. 2119 */ 2120 VERIFY(nvlist_alloc(&zct.zct_zplprops, 2121 NV_UNIQUE_NAME, KM_SLEEP) == 0); 2122 error = zfs_fill_zplprops(zc->zc_name, nvprops, 2123 zct.zct_zplprops, &is_insensitive); 2124 if (error != 0) { 2125 nvlist_free(nvprops); 2126 nvlist_free(zct.zct_zplprops); 2127 return (error); 2128 } 2129 } 2130 error = dmu_objset_create(zc->zc_name, type, NULL, 2131 is_insensitive ? DS_FLAG_CI_DATASET : 0, cbfunc, &zct); 2132 nvlist_free(zct.zct_zplprops); 2133 } 2134 2135 /* 2136 * It would be nice to do this atomically. 2137 */ 2138 if (error == 0) { 2139 if ((error = zfs_set_prop_nvlist(zc->zc_name, nvprops)) != 0) 2140 (void) dmu_objset_destroy(zc->zc_name); 2141 } 2142 nvlist_free(nvprops); 2143 return (error); 2144 } 2145 2146 struct snap_prop_arg { 2147 nvlist_t *nvprops; 2148 const char *snapname; 2149 }; 2150 2151 static int 2152 set_snap_props(char *name, void *arg) 2153 { 2154 struct snap_prop_arg *snpa = arg; 2155 int len = strlen(name) + strlen(snpa->snapname) + 2; 2156 char *buf = kmem_alloc(len, KM_SLEEP); 2157 int err; 2158 2159 (void) snprintf(buf, len, "%s@%s", name, snpa->snapname); 2160 err = zfs_set_prop_nvlist(buf, snpa->nvprops); 2161 if (err) 2162 (void) dmu_objset_destroy(buf); 2163 kmem_free(buf, len); 2164 return (err); 2165 } 2166 2167 /* 2168 * inputs: 2169 * zc_name name of filesystem 2170 * zc_value short name of snapshot 2171 * zc_cookie recursive flag 2172 * 2173 * outputs: none 2174 */ 2175 static int 2176 zfs_ioc_snapshot(zfs_cmd_t *zc) 2177 { 2178 nvlist_t *nvprops = NULL; 2179 int error; 2180 boolean_t recursive = zc->zc_cookie; 2181 2182 if (snapshot_namecheck(zc->zc_value, NULL, NULL) != 0) 2183 return (EINVAL); 2184 2185 if (zc->zc_nvlist_src != NULL && 2186 (error = get_nvlist(zc->zc_nvlist_src, zc->zc_nvlist_src_size, 2187 &nvprops)) != 0) 2188 return (error); 2189 2190 error = dmu_objset_snapshot(zc->zc_name, zc->zc_value, recursive); 2191 2192 /* 2193 * It would be nice to do this atomically. 2194 */ 2195 if (error == 0) { 2196 struct snap_prop_arg snpa; 2197 snpa.nvprops = nvprops; 2198 snpa.snapname = zc->zc_value; 2199 if (recursive) { 2200 error = dmu_objset_find(zc->zc_name, 2201 set_snap_props, &snpa, DS_FIND_CHILDREN); 2202 if (error) { 2203 (void) dmu_snapshots_destroy(zc->zc_name, 2204 zc->zc_value); 2205 } 2206 } else { 2207 error = set_snap_props(zc->zc_name, &snpa); 2208 } 2209 } 2210 nvlist_free(nvprops); 2211 return (error); 2212 } 2213 2214 int 2215 zfs_unmount_snap(char *name, void *arg) 2216 { 2217 vfs_t *vfsp = NULL; 2218 2219 if (arg) { 2220 char *snapname = arg; 2221 int len = strlen(name) + strlen(snapname) + 2; 2222 char *buf = kmem_alloc(len, KM_SLEEP); 2223 2224 (void) strcpy(buf, name); 2225 (void) strcat(buf, "@"); 2226 (void) strcat(buf, snapname); 2227 vfsp = zfs_get_vfs(buf); 2228 kmem_free(buf, len); 2229 } else if (strchr(name, '@')) { 2230 vfsp = zfs_get_vfs(name); 2231 } 2232 2233 if (vfsp) { 2234 /* 2235 * Always force the unmount for snapshots. 2236 */ 2237 int flag = MS_FORCE; 2238 int err; 2239 2240 if ((err = vn_vfswlock(vfsp->vfs_vnodecovered)) != 0) { 2241 VFS_RELE(vfsp); 2242 return (err); 2243 } 2244 VFS_RELE(vfsp); 2245 if ((err = dounmount(vfsp, flag, kcred)) != 0) 2246 return (err); 2247 } 2248 return (0); 2249 } 2250 2251 /* 2252 * inputs: 2253 * zc_name name of filesystem 2254 * zc_value short name of snapshot 2255 * 2256 * outputs: none 2257 */ 2258 static int 2259 zfs_ioc_destroy_snaps(zfs_cmd_t *zc) 2260 { 2261 int err; 2262 2263 if (snapshot_namecheck(zc->zc_value, NULL, NULL) != 0) 2264 return (EINVAL); 2265 err = dmu_objset_find(zc->zc_name, 2266 zfs_unmount_snap, zc->zc_value, DS_FIND_CHILDREN); 2267 if (err) 2268 return (err); 2269 return (dmu_snapshots_destroy(zc->zc_name, zc->zc_value)); 2270 } 2271 2272 /* 2273 * inputs: 2274 * zc_name name of dataset to destroy 2275 * zc_objset_type type of objset 2276 * 2277 * outputs: none 2278 */ 2279 static int 2280 zfs_ioc_destroy(zfs_cmd_t *zc) 2281 { 2282 if (strchr(zc->zc_name, '@') && zc->zc_objset_type == DMU_OST_ZFS) { 2283 int err = zfs_unmount_snap(zc->zc_name, NULL); 2284 if (err) 2285 return (err); 2286 } 2287 2288 return (dmu_objset_destroy(zc->zc_name)); 2289 } 2290 2291 /* 2292 * inputs: 2293 * zc_name name of dataset to rollback (to most recent snapshot) 2294 * 2295 * outputs: none 2296 */ 2297 static int 2298 zfs_ioc_rollback(zfs_cmd_t *zc) 2299 { 2300 objset_t *os; 2301 int error; 2302 zfsvfs_t *zfsvfs = NULL; 2303 2304 /* 2305 * Get the zfsvfs for the receiving objset. There 2306 * won't be one if we're operating on a zvol, if the 2307 * objset doesn't exist yet, or is not mounted. 2308 */ 2309 error = dmu_objset_open(zc->zc_name, DMU_OST_ANY, DS_MODE_USER, &os); 2310 if (error) 2311 return (error); 2312 2313 if (dmu_objset_type(os) == DMU_OST_ZFS) { 2314 mutex_enter(&os->os->os_user_ptr_lock); 2315 zfsvfs = dmu_objset_get_user(os); 2316 if (zfsvfs != NULL) 2317 VFS_HOLD(zfsvfs->z_vfs); 2318 mutex_exit(&os->os->os_user_ptr_lock); 2319 } 2320 2321 if (zfsvfs != NULL) { 2322 char osname[MAXNAMELEN]; 2323 int mode; 2324 2325 error = zfs_suspend_fs(zfsvfs, osname, &mode); 2326 if (error == 0) { 2327 int resume_err; 2328 2329 ASSERT(strcmp(osname, zc->zc_name) == 0); 2330 error = dmu_objset_rollback(os); 2331 resume_err = zfs_resume_fs(zfsvfs, osname, mode); 2332 error = error ? error : resume_err; 2333 } else { 2334 dmu_objset_close(os); 2335 } 2336 VFS_RELE(zfsvfs->z_vfs); 2337 } else { 2338 error = dmu_objset_rollback(os); 2339 } 2340 /* Note, the dmu_objset_rollback() releases the objset for us. */ 2341 2342 return (error); 2343 } 2344 2345 /* 2346 * inputs: 2347 * zc_name old name of dataset 2348 * zc_value new name of dataset 2349 * zc_cookie recursive flag (only valid for snapshots) 2350 * 2351 * outputs: none 2352 */ 2353 static int 2354 zfs_ioc_rename(zfs_cmd_t *zc) 2355 { 2356 boolean_t recursive = zc->zc_cookie & 1; 2357 2358 zc->zc_value[sizeof (zc->zc_value) - 1] = '\0'; 2359 if (dataset_namecheck(zc->zc_value, NULL, NULL) != 0 || 2360 strchr(zc->zc_value, '%')) 2361 return (EINVAL); 2362 2363 /* 2364 * Unmount snapshot unless we're doing a recursive rename, 2365 * in which case the dataset code figures out which snapshots 2366 * to unmount. 2367 */ 2368 if (!recursive && strchr(zc->zc_name, '@') != NULL && 2369 zc->zc_objset_type == DMU_OST_ZFS) { 2370 int err = zfs_unmount_snap(zc->zc_name, NULL); 2371 if (err) 2372 return (err); 2373 } 2374 return (dmu_objset_rename(zc->zc_name, zc->zc_value, recursive)); 2375 } 2376 2377 static void 2378 clear_props(char *dataset, nvlist_t *props) 2379 { 2380 zfs_cmd_t *zc; 2381 nvpair_t *prop; 2382 2383 if (props == NULL) 2384 return; 2385 zc = kmem_alloc(sizeof (zfs_cmd_t), KM_SLEEP); 2386 (void) strcpy(zc->zc_name, dataset); 2387 for (prop = nvlist_next_nvpair(props, NULL); prop; 2388 prop = nvlist_next_nvpair(props, prop)) { 2389 (void) strcpy(zc->zc_value, nvpair_name(prop)); 2390 if (zfs_secpolicy_inherit(zc, CRED()) == 0) 2391 (void) zfs_ioc_inherit_prop(zc); 2392 } 2393 kmem_free(zc, sizeof (zfs_cmd_t)); 2394 } 2395 2396 /* 2397 * inputs: 2398 * zc_name name of containing filesystem 2399 * zc_nvlist_src{_size} nvlist of properties to apply 2400 * zc_value name of snapshot to create 2401 * zc_string name of clone origin (if DRR_FLAG_CLONE) 2402 * zc_cookie file descriptor to recv from 2403 * zc_begin_record the BEGIN record of the stream (not byteswapped) 2404 * zc_guid force flag 2405 * 2406 * outputs: 2407 * zc_cookie number of bytes read 2408 */ 2409 static int 2410 zfs_ioc_recv(zfs_cmd_t *zc) 2411 { 2412 file_t *fp; 2413 objset_t *os; 2414 dmu_recv_cookie_t drc; 2415 zfsvfs_t *zfsvfs = NULL; 2416 boolean_t force = (boolean_t)zc->zc_guid; 2417 int error, fd; 2418 offset_t off; 2419 nvlist_t *props = NULL; 2420 nvlist_t *origprops = NULL; 2421 objset_t *origin = NULL; 2422 char *tosnap; 2423 char tofs[ZFS_MAXNAMELEN]; 2424 2425 if (dataset_namecheck(zc->zc_value, NULL, NULL) != 0 || 2426 strchr(zc->zc_value, '@') == NULL || 2427 strchr(zc->zc_value, '%')) 2428 return (EINVAL); 2429 2430 (void) strcpy(tofs, zc->zc_value); 2431 tosnap = strchr(tofs, '@'); 2432 *tosnap = '\0'; 2433 tosnap++; 2434 2435 if (zc->zc_nvlist_src != NULL && 2436 (error = get_nvlist(zc->zc_nvlist_src, zc->zc_nvlist_src_size, 2437 &props)) != 0) 2438 return (error); 2439 2440 fd = zc->zc_cookie; 2441 fp = getf(fd); 2442 if (fp == NULL) { 2443 nvlist_free(props); 2444 return (EBADF); 2445 } 2446 2447 if (dmu_objset_open(tofs, DMU_OST_ANY, 2448 DS_MODE_USER | DS_MODE_READONLY, &os) == 0) { 2449 /* 2450 * Try to get the zfsvfs for the receiving objset. 2451 * There won't be one if we're operating on a zvol, 2452 * if the objset doesn't exist yet, or is not mounted. 2453 */ 2454 mutex_enter(&os->os->os_user_ptr_lock); 2455 if (zfsvfs = dmu_objset_get_user(os)) { 2456 if (!mutex_tryenter(&zfsvfs->z_online_recv_lock)) { 2457 mutex_exit(&os->os->os_user_ptr_lock); 2458 dmu_objset_close(os); 2459 zfsvfs = NULL; 2460 error = EBUSY; 2461 goto out; 2462 } 2463 VFS_HOLD(zfsvfs->z_vfs); 2464 } 2465 mutex_exit(&os->os->os_user_ptr_lock); 2466 2467 /* 2468 * If new properties are supplied, they are to completely 2469 * replace the existing ones, so stash away the existing ones. 2470 */ 2471 if (props) 2472 (void) dsl_prop_get_all(os, &origprops, TRUE); 2473 2474 dmu_objset_close(os); 2475 } 2476 2477 if (zc->zc_string[0]) { 2478 error = dmu_objset_open(zc->zc_string, DMU_OST_ANY, 2479 DS_MODE_USER | DS_MODE_READONLY, &origin); 2480 if (error) 2481 goto out; 2482 } 2483 2484 error = dmu_recv_begin(tofs, tosnap, &zc->zc_begin_record, 2485 force, origin, zfsvfs != NULL, &drc); 2486 if (origin) 2487 dmu_objset_close(origin); 2488 if (error) 2489 goto out; 2490 2491 /* 2492 * Reset properties. We do this before we receive the stream 2493 * so that the properties are applied to the new data. 2494 */ 2495 if (props) { 2496 clear_props(tofs, origprops); 2497 /* 2498 * XXX - Note, this is all-or-nothing; should be best-effort. 2499 */ 2500 (void) zfs_set_prop_nvlist(tofs, props); 2501 } 2502 2503 off = fp->f_offset; 2504 error = dmu_recv_stream(&drc, fp->f_vnode, &off); 2505 2506 if (error == 0 && zfsvfs) { 2507 char osname[MAXNAMELEN]; 2508 int mode; 2509 2510 /* online recv */ 2511 error = zfs_suspend_fs(zfsvfs, osname, &mode); 2512 if (error == 0) { 2513 int resume_err; 2514 2515 error = dmu_recv_end(&drc); 2516 resume_err = zfs_resume_fs(zfsvfs, osname, mode); 2517 error = error ? error : resume_err; 2518 } else { 2519 dmu_recv_abort_cleanup(&drc); 2520 } 2521 } else if (error == 0) { 2522 error = dmu_recv_end(&drc); 2523 } 2524 2525 zc->zc_cookie = off - fp->f_offset; 2526 if (VOP_SEEK(fp->f_vnode, fp->f_offset, &off, NULL) == 0) 2527 fp->f_offset = off; 2528 2529 /* 2530 * On error, restore the original props. 2531 */ 2532 if (error && props) { 2533 clear_props(tofs, props); 2534 (void) zfs_set_prop_nvlist(tofs, origprops); 2535 } 2536 out: 2537 if (zfsvfs) { 2538 mutex_exit(&zfsvfs->z_online_recv_lock); 2539 VFS_RELE(zfsvfs->z_vfs); 2540 } 2541 nvlist_free(props); 2542 nvlist_free(origprops); 2543 releasef(fd); 2544 return (error); 2545 } 2546 2547 /* 2548 * inputs: 2549 * zc_name name of snapshot to send 2550 * zc_value short name of incremental fromsnap (may be empty) 2551 * zc_cookie file descriptor to send stream to 2552 * zc_obj fromorigin flag (mutually exclusive with zc_value) 2553 * 2554 * outputs: none 2555 */ 2556 static int 2557 zfs_ioc_send(zfs_cmd_t *zc) 2558 { 2559 objset_t *fromsnap = NULL; 2560 objset_t *tosnap; 2561 file_t *fp; 2562 int error; 2563 offset_t off; 2564 2565 error = dmu_objset_open(zc->zc_name, DMU_OST_ANY, 2566 DS_MODE_USER | DS_MODE_READONLY, &tosnap); 2567 if (error) 2568 return (error); 2569 2570 if (zc->zc_value[0] != '\0') { 2571 char buf[MAXPATHLEN]; 2572 char *cp; 2573 2574 (void) strncpy(buf, zc->zc_name, sizeof (buf)); 2575 cp = strchr(buf, '@'); 2576 if (cp) 2577 *(cp+1) = 0; 2578 (void) strncat(buf, zc->zc_value, sizeof (buf)); 2579 error = dmu_objset_open(buf, DMU_OST_ANY, 2580 DS_MODE_USER | DS_MODE_READONLY, &fromsnap); 2581 if (error) { 2582 dmu_objset_close(tosnap); 2583 return (error); 2584 } 2585 } 2586 2587 fp = getf(zc->zc_cookie); 2588 if (fp == NULL) { 2589 dmu_objset_close(tosnap); 2590 if (fromsnap) 2591 dmu_objset_close(fromsnap); 2592 return (EBADF); 2593 } 2594 2595 off = fp->f_offset; 2596 error = dmu_sendbackup(tosnap, fromsnap, zc->zc_obj, fp->f_vnode, &off); 2597 2598 if (VOP_SEEK(fp->f_vnode, fp->f_offset, &off, NULL) == 0) 2599 fp->f_offset = off; 2600 releasef(zc->zc_cookie); 2601 if (fromsnap) 2602 dmu_objset_close(fromsnap); 2603 dmu_objset_close(tosnap); 2604 return (error); 2605 } 2606 2607 static int 2608 zfs_ioc_inject_fault(zfs_cmd_t *zc) 2609 { 2610 int id, error; 2611 2612 error = zio_inject_fault(zc->zc_name, (int)zc->zc_guid, &id, 2613 &zc->zc_inject_record); 2614 2615 if (error == 0) 2616 zc->zc_guid = (uint64_t)id; 2617 2618 return (error); 2619 } 2620 2621 static int 2622 zfs_ioc_clear_fault(zfs_cmd_t *zc) 2623 { 2624 return (zio_clear_fault((int)zc->zc_guid)); 2625 } 2626 2627 static int 2628 zfs_ioc_inject_list_next(zfs_cmd_t *zc) 2629 { 2630 int id = (int)zc->zc_guid; 2631 int error; 2632 2633 error = zio_inject_list_next(&id, zc->zc_name, sizeof (zc->zc_name), 2634 &zc->zc_inject_record); 2635 2636 zc->zc_guid = id; 2637 2638 return (error); 2639 } 2640 2641 static int 2642 zfs_ioc_error_log(zfs_cmd_t *zc) 2643 { 2644 spa_t *spa; 2645 int error; 2646 size_t count = (size_t)zc->zc_nvlist_dst_size; 2647 2648 if ((error = spa_open(zc->zc_name, &spa, FTAG)) != 0) 2649 return (error); 2650 2651 error = spa_get_errlog(spa, (void *)(uintptr_t)zc->zc_nvlist_dst, 2652 &count); 2653 if (error == 0) 2654 zc->zc_nvlist_dst_size = count; 2655 else 2656 zc->zc_nvlist_dst_size = spa_get_errlog_size(spa); 2657 2658 spa_close(spa, FTAG); 2659 2660 return (error); 2661 } 2662 2663 static int 2664 zfs_ioc_clear(zfs_cmd_t *zc) 2665 { 2666 spa_t *spa; 2667 vdev_t *vd; 2668 uint64_t txg; 2669 int error; 2670 2671 /* 2672 * On zpool clear we also fix up missing slogs 2673 */ 2674 mutex_enter(&spa_namespace_lock); 2675 spa = spa_lookup(zc->zc_name); 2676 if (spa == NULL) { 2677 mutex_exit(&spa_namespace_lock); 2678 return (EIO); 2679 } 2680 if (spa->spa_log_state == SPA_LOG_MISSING) { 2681 /* we need to let spa_open/spa_load clear the chains */ 2682 spa->spa_log_state = SPA_LOG_CLEAR; 2683 } 2684 mutex_exit(&spa_namespace_lock); 2685 2686 if ((error = spa_open(zc->zc_name, &spa, FTAG)) != 0) 2687 return (error); 2688 2689 /* 2690 * Try to resume any I/Os which may have been suspended 2691 * as a result of a complete pool failure. 2692 */ 2693 if (!list_is_empty(&spa->spa_zio_list)) { 2694 if (zio_vdev_resume_io(spa) != 0) { 2695 spa_close(spa, FTAG); 2696 return (EIO); 2697 } 2698 } 2699 2700 txg = spa_vdev_enter(spa); 2701 2702 if (zc->zc_guid == 0) { 2703 vd = NULL; 2704 } else { 2705 vd = spa_lookup_by_guid(spa, zc->zc_guid, B_TRUE); 2706 if (vd == NULL) { 2707 (void) spa_vdev_exit(spa, NULL, txg, ENODEV); 2708 spa_close(spa, FTAG); 2709 return (ENODEV); 2710 } 2711 } 2712 2713 vdev_clear(spa, vd, B_TRUE); 2714 2715 (void) spa_vdev_exit(spa, NULL, txg, 0); 2716 2717 spa_close(spa, FTAG); 2718 2719 return (0); 2720 } 2721 2722 /* 2723 * inputs: 2724 * zc_name name of filesystem 2725 * zc_value name of origin snapshot 2726 * 2727 * outputs: none 2728 */ 2729 static int 2730 zfs_ioc_promote(zfs_cmd_t *zc) 2731 { 2732 char *cp; 2733 2734 /* 2735 * We don't need to unmount *all* the origin fs's snapshots, but 2736 * it's easier. 2737 */ 2738 cp = strchr(zc->zc_value, '@'); 2739 if (cp) 2740 *cp = '\0'; 2741 (void) dmu_objset_find(zc->zc_value, 2742 zfs_unmount_snap, NULL, DS_FIND_SNAPSHOTS); 2743 return (dsl_dataset_promote(zc->zc_name)); 2744 } 2745 2746 /* 2747 * We don't want to have a hard dependency 2748 * against some special symbols in sharefs 2749 * nfs, and smbsrv. Determine them if needed when 2750 * the first file system is shared. 2751 * Neither sharefs, nfs or smbsrv are unloadable modules. 2752 */ 2753 int (*znfsexport_fs)(void *arg); 2754 int (*zshare_fs)(enum sharefs_sys_op, share_t *, uint32_t); 2755 int (*zsmbexport_fs)(void *arg, boolean_t add_share); 2756 2757 int zfs_nfsshare_inited; 2758 int zfs_smbshare_inited; 2759 2760 ddi_modhandle_t nfs_mod; 2761 ddi_modhandle_t sharefs_mod; 2762 ddi_modhandle_t smbsrv_mod; 2763 kmutex_t zfs_share_lock; 2764 2765 static int 2766 zfs_init_sharefs() 2767 { 2768 int error; 2769 2770 ASSERT(MUTEX_HELD(&zfs_share_lock)); 2771 /* Both NFS and SMB shares also require sharetab support. */ 2772 if (sharefs_mod == NULL && ((sharefs_mod = 2773 ddi_modopen("fs/sharefs", 2774 KRTLD_MODE_FIRST, &error)) == NULL)) { 2775 return (ENOSYS); 2776 } 2777 if (zshare_fs == NULL && ((zshare_fs = 2778 (int (*)(enum sharefs_sys_op, share_t *, uint32_t)) 2779 ddi_modsym(sharefs_mod, "sharefs_impl", &error)) == NULL)) { 2780 return (ENOSYS); 2781 } 2782 return (0); 2783 } 2784 2785 static int 2786 zfs_ioc_share(zfs_cmd_t *zc) 2787 { 2788 int error; 2789 int opcode; 2790 2791 switch (zc->zc_share.z_sharetype) { 2792 case ZFS_SHARE_NFS: 2793 case ZFS_UNSHARE_NFS: 2794 if (zfs_nfsshare_inited == 0) { 2795 mutex_enter(&zfs_share_lock); 2796 if (nfs_mod == NULL && ((nfs_mod = ddi_modopen("fs/nfs", 2797 KRTLD_MODE_FIRST, &error)) == NULL)) { 2798 mutex_exit(&zfs_share_lock); 2799 return (ENOSYS); 2800 } 2801 if (znfsexport_fs == NULL && 2802 ((znfsexport_fs = (int (*)(void *)) 2803 ddi_modsym(nfs_mod, 2804 "nfs_export", &error)) == NULL)) { 2805 mutex_exit(&zfs_share_lock); 2806 return (ENOSYS); 2807 } 2808 error = zfs_init_sharefs(); 2809 if (error) { 2810 mutex_exit(&zfs_share_lock); 2811 return (ENOSYS); 2812 } 2813 zfs_nfsshare_inited = 1; 2814 mutex_exit(&zfs_share_lock); 2815 } 2816 break; 2817 case ZFS_SHARE_SMB: 2818 case ZFS_UNSHARE_SMB: 2819 if (zfs_smbshare_inited == 0) { 2820 mutex_enter(&zfs_share_lock); 2821 if (smbsrv_mod == NULL && ((smbsrv_mod = 2822 ddi_modopen("drv/smbsrv", 2823 KRTLD_MODE_FIRST, &error)) == NULL)) { 2824 mutex_exit(&zfs_share_lock); 2825 return (ENOSYS); 2826 } 2827 if (zsmbexport_fs == NULL && ((zsmbexport_fs = 2828 (int (*)(void *, boolean_t))ddi_modsym(smbsrv_mod, 2829 "smb_server_share", &error)) == NULL)) { 2830 mutex_exit(&zfs_share_lock); 2831 return (ENOSYS); 2832 } 2833 error = zfs_init_sharefs(); 2834 if (error) { 2835 mutex_exit(&zfs_share_lock); 2836 return (ENOSYS); 2837 } 2838 zfs_smbshare_inited = 1; 2839 mutex_exit(&zfs_share_lock); 2840 } 2841 break; 2842 default: 2843 return (EINVAL); 2844 } 2845 2846 switch (zc->zc_share.z_sharetype) { 2847 case ZFS_SHARE_NFS: 2848 case ZFS_UNSHARE_NFS: 2849 if (error = 2850 znfsexport_fs((void *) 2851 (uintptr_t)zc->zc_share.z_exportdata)) 2852 return (error); 2853 break; 2854 case ZFS_SHARE_SMB: 2855 case ZFS_UNSHARE_SMB: 2856 if (error = zsmbexport_fs((void *) 2857 (uintptr_t)zc->zc_share.z_exportdata, 2858 zc->zc_share.z_sharetype == ZFS_SHARE_SMB ? 2859 B_TRUE : B_FALSE)) { 2860 return (error); 2861 } 2862 break; 2863 } 2864 2865 opcode = (zc->zc_share.z_sharetype == ZFS_SHARE_NFS || 2866 zc->zc_share.z_sharetype == ZFS_SHARE_SMB) ? 2867 SHAREFS_ADD : SHAREFS_REMOVE; 2868 2869 /* 2870 * Add or remove share from sharetab 2871 */ 2872 error = zshare_fs(opcode, 2873 (void *)(uintptr_t)zc->zc_share.z_sharedata, 2874 zc->zc_share.z_sharemax); 2875 2876 return (error); 2877 2878 } 2879 2880 /* 2881 * pool create, destroy, and export don't log the history as part of 2882 * zfsdev_ioctl, but rather zfs_ioc_pool_create, and zfs_ioc_pool_export 2883 * do the logging of those commands. 2884 */ 2885 static zfs_ioc_vec_t zfs_ioc_vec[] = { 2886 { zfs_ioc_pool_create, zfs_secpolicy_config, POOL_NAME, B_FALSE }, 2887 { zfs_ioc_pool_destroy, zfs_secpolicy_config, POOL_NAME, B_FALSE }, 2888 { zfs_ioc_pool_import, zfs_secpolicy_config, POOL_NAME, B_TRUE }, 2889 { zfs_ioc_pool_export, zfs_secpolicy_config, POOL_NAME, B_FALSE }, 2890 { zfs_ioc_pool_configs, zfs_secpolicy_none, NO_NAME, B_FALSE }, 2891 { zfs_ioc_pool_stats, zfs_secpolicy_read, POOL_NAME, B_FALSE }, 2892 { zfs_ioc_pool_tryimport, zfs_secpolicy_config, NO_NAME, B_FALSE }, 2893 { zfs_ioc_pool_scrub, zfs_secpolicy_config, POOL_NAME, B_TRUE }, 2894 { zfs_ioc_pool_freeze, zfs_secpolicy_config, NO_NAME, B_FALSE }, 2895 { zfs_ioc_pool_upgrade, zfs_secpolicy_config, POOL_NAME, B_TRUE }, 2896 { zfs_ioc_pool_get_history, zfs_secpolicy_config, POOL_NAME, B_FALSE }, 2897 { zfs_ioc_vdev_add, zfs_secpolicy_config, POOL_NAME, B_TRUE }, 2898 { zfs_ioc_vdev_remove, zfs_secpolicy_config, POOL_NAME, B_TRUE }, 2899 { zfs_ioc_vdev_set_state, zfs_secpolicy_config, POOL_NAME, B_TRUE }, 2900 { zfs_ioc_vdev_attach, zfs_secpolicy_config, POOL_NAME, B_TRUE }, 2901 { zfs_ioc_vdev_detach, zfs_secpolicy_config, POOL_NAME, B_TRUE }, 2902 { zfs_ioc_vdev_setpath, zfs_secpolicy_config, POOL_NAME, B_FALSE }, 2903 { zfs_ioc_objset_stats, zfs_secpolicy_read, DATASET_NAME, B_FALSE }, 2904 { zfs_ioc_objset_zplprops, zfs_secpolicy_read, DATASET_NAME, B_FALSE }, 2905 { zfs_ioc_dataset_list_next, zfs_secpolicy_read, 2906 DATASET_NAME, B_FALSE }, 2907 { zfs_ioc_snapshot_list_next, zfs_secpolicy_read, 2908 DATASET_NAME, B_FALSE }, 2909 { zfs_ioc_set_prop, zfs_secpolicy_none, DATASET_NAME, B_TRUE }, 2910 { zfs_ioc_create_minor, zfs_secpolicy_minor, DATASET_NAME, B_FALSE }, 2911 { zfs_ioc_remove_minor, zfs_secpolicy_minor, DATASET_NAME, B_FALSE }, 2912 { zfs_ioc_create, zfs_secpolicy_create, DATASET_NAME, B_TRUE }, 2913 { zfs_ioc_destroy, zfs_secpolicy_destroy, DATASET_NAME, B_TRUE }, 2914 { zfs_ioc_rollback, zfs_secpolicy_rollback, DATASET_NAME, B_TRUE }, 2915 { zfs_ioc_rename, zfs_secpolicy_rename, DATASET_NAME, B_TRUE }, 2916 { zfs_ioc_recv, zfs_secpolicy_receive, DATASET_NAME, B_TRUE }, 2917 { zfs_ioc_send, zfs_secpolicy_send, DATASET_NAME, B_TRUE }, 2918 { zfs_ioc_inject_fault, zfs_secpolicy_inject, NO_NAME, B_FALSE }, 2919 { zfs_ioc_clear_fault, zfs_secpolicy_inject, NO_NAME, B_FALSE }, 2920 { zfs_ioc_inject_list_next, zfs_secpolicy_inject, NO_NAME, B_FALSE }, 2921 { zfs_ioc_error_log, zfs_secpolicy_inject, POOL_NAME, B_FALSE }, 2922 { zfs_ioc_clear, zfs_secpolicy_config, POOL_NAME, B_TRUE }, 2923 { zfs_ioc_promote, zfs_secpolicy_promote, DATASET_NAME, B_TRUE }, 2924 { zfs_ioc_destroy_snaps, zfs_secpolicy_destroy, DATASET_NAME, B_TRUE }, 2925 { zfs_ioc_snapshot, zfs_secpolicy_snapshot, DATASET_NAME, B_TRUE }, 2926 { zfs_ioc_dsobj_to_dsname, zfs_secpolicy_config, POOL_NAME, B_FALSE }, 2927 { zfs_ioc_obj_to_path, zfs_secpolicy_config, NO_NAME, B_FALSE }, 2928 { zfs_ioc_pool_set_props, zfs_secpolicy_config, POOL_NAME, B_TRUE }, 2929 { zfs_ioc_pool_get_props, zfs_secpolicy_read, POOL_NAME, B_FALSE }, 2930 { zfs_ioc_set_fsacl, zfs_secpolicy_fsacl, DATASET_NAME, B_TRUE }, 2931 { zfs_ioc_get_fsacl, zfs_secpolicy_read, DATASET_NAME, B_FALSE }, 2932 { zfs_ioc_iscsi_perm_check, zfs_secpolicy_iscsi, 2933 DATASET_NAME, B_FALSE }, 2934 { zfs_ioc_share, zfs_secpolicy_share, DATASET_NAME, B_FALSE }, 2935 { zfs_ioc_inherit_prop, zfs_secpolicy_inherit, DATASET_NAME, B_TRUE }, 2936 }; 2937 2938 static int 2939 zfsdev_ioctl(dev_t dev, int cmd, intptr_t arg, int flag, cred_t *cr, int *rvalp) 2940 { 2941 zfs_cmd_t *zc; 2942 uint_t vec; 2943 int error, rc; 2944 2945 if (getminor(dev) != 0) 2946 return (zvol_ioctl(dev, cmd, arg, flag, cr, rvalp)); 2947 2948 vec = cmd - ZFS_IOC; 2949 ASSERT3U(getmajor(dev), ==, ddi_driver_major(zfs_dip)); 2950 2951 if (vec >= sizeof (zfs_ioc_vec) / sizeof (zfs_ioc_vec[0])) 2952 return (EINVAL); 2953 2954 zc = kmem_zalloc(sizeof (zfs_cmd_t), KM_SLEEP); 2955 2956 error = xcopyin((void *)arg, zc, sizeof (zfs_cmd_t)); 2957 2958 if (error == 0) 2959 error = zfs_ioc_vec[vec].zvec_secpolicy(zc, cr); 2960 2961 /* 2962 * Ensure that all pool/dataset names are valid before we pass down to 2963 * the lower layers. 2964 */ 2965 if (error == 0) { 2966 zc->zc_name[sizeof (zc->zc_name) - 1] = '\0'; 2967 switch (zfs_ioc_vec[vec].zvec_namecheck) { 2968 case POOL_NAME: 2969 if (pool_namecheck(zc->zc_name, NULL, NULL) != 0) 2970 error = EINVAL; 2971 break; 2972 2973 case DATASET_NAME: 2974 if (dataset_namecheck(zc->zc_name, NULL, NULL) != 0) 2975 error = EINVAL; 2976 break; 2977 2978 case NO_NAME: 2979 break; 2980 } 2981 } 2982 2983 if (error == 0) 2984 error = zfs_ioc_vec[vec].zvec_func(zc); 2985 2986 rc = xcopyout(zc, (void *)arg, sizeof (zfs_cmd_t)); 2987 if (error == 0) { 2988 error = rc; 2989 if (zfs_ioc_vec[vec].zvec_his_log == B_TRUE) 2990 zfs_log_history(zc); 2991 } 2992 2993 kmem_free(zc, sizeof (zfs_cmd_t)); 2994 return (error); 2995 } 2996 2997 static int 2998 zfs_attach(dev_info_t *dip, ddi_attach_cmd_t cmd) 2999 { 3000 if (cmd != DDI_ATTACH) 3001 return (DDI_FAILURE); 3002 3003 if (ddi_create_minor_node(dip, "zfs", S_IFCHR, 0, 3004 DDI_PSEUDO, 0) == DDI_FAILURE) 3005 return (DDI_FAILURE); 3006 3007 zfs_dip = dip; 3008 3009 ddi_report_dev(dip); 3010 3011 return (DDI_SUCCESS); 3012 } 3013 3014 static int 3015 zfs_detach(dev_info_t *dip, ddi_detach_cmd_t cmd) 3016 { 3017 if (spa_busy() || zfs_busy() || zvol_busy()) 3018 return (DDI_FAILURE); 3019 3020 if (cmd != DDI_DETACH) 3021 return (DDI_FAILURE); 3022 3023 zfs_dip = NULL; 3024 3025 ddi_prop_remove_all(dip); 3026 ddi_remove_minor_node(dip, NULL); 3027 3028 return (DDI_SUCCESS); 3029 } 3030 3031 /*ARGSUSED*/ 3032 static int 3033 zfs_info(dev_info_t *dip, ddi_info_cmd_t infocmd, void *arg, void **result) 3034 { 3035 switch (infocmd) { 3036 case DDI_INFO_DEVT2DEVINFO: 3037 *result = zfs_dip; 3038 return (DDI_SUCCESS); 3039 3040 case DDI_INFO_DEVT2INSTANCE: 3041 *result = (void *)0; 3042 return (DDI_SUCCESS); 3043 } 3044 3045 return (DDI_FAILURE); 3046 } 3047 3048 /* 3049 * OK, so this is a little weird. 3050 * 3051 * /dev/zfs is the control node, i.e. minor 0. 3052 * /dev/zvol/[r]dsk/pool/dataset are the zvols, minor > 0. 3053 * 3054 * /dev/zfs has basically nothing to do except serve up ioctls, 3055 * so most of the standard driver entry points are in zvol.c. 3056 */ 3057 static struct cb_ops zfs_cb_ops = { 3058 zvol_open, /* open */ 3059 zvol_close, /* close */ 3060 zvol_strategy, /* strategy */ 3061 nodev, /* print */ 3062 zvol_dump, /* dump */ 3063 zvol_read, /* read */ 3064 zvol_write, /* write */ 3065 zfsdev_ioctl, /* ioctl */ 3066 nodev, /* devmap */ 3067 nodev, /* mmap */ 3068 nodev, /* segmap */ 3069 nochpoll, /* poll */ 3070 ddi_prop_op, /* prop_op */ 3071 NULL, /* streamtab */ 3072 D_NEW | D_MP | D_64BIT, /* Driver compatibility flag */ 3073 CB_REV, /* version */ 3074 nodev, /* async read */ 3075 nodev, /* async write */ 3076 }; 3077 3078 static struct dev_ops zfs_dev_ops = { 3079 DEVO_REV, /* version */ 3080 0, /* refcnt */ 3081 zfs_info, /* info */ 3082 nulldev, /* identify */ 3083 nulldev, /* probe */ 3084 zfs_attach, /* attach */ 3085 zfs_detach, /* detach */ 3086 nodev, /* reset */ 3087 &zfs_cb_ops, /* driver operations */ 3088 NULL, /* no bus operations */ 3089 NULL, /* power */ 3090 ddi_quiesce_not_needed, /* quiesce */ 3091 }; 3092 3093 static struct modldrv zfs_modldrv = { 3094 &mod_driverops, 3095 "ZFS storage pool", 3096 &zfs_dev_ops 3097 }; 3098 3099 static struct modlinkage modlinkage = { 3100 MODREV_1, 3101 (void *)&zfs_modlfs, 3102 (void *)&zfs_modldrv, 3103 NULL 3104 }; 3105 3106 3107 uint_t zfs_fsyncer_key; 3108 extern uint_t rrw_tsd_key; 3109 3110 int 3111 _init(void) 3112 { 3113 int error; 3114 3115 spa_init(FREAD | FWRITE); 3116 zfs_init(); 3117 zvol_init(); 3118 3119 if ((error = mod_install(&modlinkage)) != 0) { 3120 zvol_fini(); 3121 zfs_fini(); 3122 spa_fini(); 3123 return (error); 3124 } 3125 3126 tsd_create(&zfs_fsyncer_key, NULL); 3127 tsd_create(&rrw_tsd_key, NULL); 3128 3129 error = ldi_ident_from_mod(&modlinkage, &zfs_li); 3130 ASSERT(error == 0); 3131 mutex_init(&zfs_share_lock, NULL, MUTEX_DEFAULT, NULL); 3132 3133 return (0); 3134 } 3135 3136 int 3137 _fini(void) 3138 { 3139 int error; 3140 3141 if (spa_busy() || zfs_busy() || zvol_busy() || zio_injection_enabled) 3142 return (EBUSY); 3143 3144 if ((error = mod_remove(&modlinkage)) != 0) 3145 return (error); 3146 3147 zvol_fini(); 3148 zfs_fini(); 3149 spa_fini(); 3150 if (zfs_nfsshare_inited) 3151 (void) ddi_modclose(nfs_mod); 3152 if (zfs_smbshare_inited) 3153 (void) ddi_modclose(smbsrv_mod); 3154 if (zfs_nfsshare_inited || zfs_smbshare_inited) 3155 (void) ddi_modclose(sharefs_mod); 3156 3157 tsd_destroy(&zfs_fsyncer_key); 3158 ldi_ident_release(zfs_li); 3159 zfs_li = NULL; 3160 mutex_destroy(&zfs_share_lock); 3161 3162 return (error); 3163 } 3164 3165 int 3166 _info(struct modinfo *modinfop) 3167 { 3168 return (mod_info(&modlinkage, modinfop)); 3169 } 3170