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 2007 Sun Microsystems, Inc. All rights reserved. 23 * Use is subject to license terms. 24 */ 25 26 #pragma ident "%Z%%M% %I% %E% SMI" 27 28 #include <sys/types.h> 29 #include <sys/param.h> 30 #include <sys/errno.h> 31 #include <sys/uio.h> 32 #include <sys/buf.h> 33 #include <sys/modctl.h> 34 #include <sys/open.h> 35 #include <sys/file.h> 36 #include <sys/kmem.h> 37 #include <sys/conf.h> 38 #include <sys/cmn_err.h> 39 #include <sys/stat.h> 40 #include <sys/zfs_ioctl.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/zvol.h> 64 #include <sharefs/share.h> 65 #include <sys/zfs_znode.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 struct zfs_ioc_vec { 83 zfs_ioc_func_t *zvec_func; 84 zfs_secpolicy_func_t *zvec_secpolicy; 85 enum { 86 NO_NAME, 87 POOL_NAME, 88 DATASET_NAME 89 } zvec_namecheck; 90 boolean_t zvec_his_log; 91 } zfs_ioc_vec_t; 92 93 /* _NOTE(PRINTFLIKE(4)) - this is printf-like, but lint is too whiney */ 94 void 95 __dprintf(const char *file, const char *func, int line, const char *fmt, ...) 96 { 97 const char *newfile; 98 char buf[256]; 99 va_list adx; 100 101 /* 102 * Get rid of annoying "../common/" prefix to filename. 103 */ 104 newfile = strrchr(file, '/'); 105 if (newfile != NULL) { 106 newfile = newfile + 1; /* Get rid of leading / */ 107 } else { 108 newfile = file; 109 } 110 111 va_start(adx, fmt); 112 (void) vsnprintf(buf, sizeof (buf), fmt, adx); 113 va_end(adx); 114 115 /* 116 * To get this data, use the zfs-dprintf probe as so: 117 * dtrace -q -n 'zfs-dprintf \ 118 * /stringof(arg0) == "dbuf.c"/ \ 119 * {printf("%s: %s", stringof(arg1), stringof(arg3))}' 120 * arg0 = file name 121 * arg1 = function name 122 * arg2 = line number 123 * arg3 = message 124 */ 125 DTRACE_PROBE4(zfs__dprintf, 126 char *, newfile, char *, func, int, line, char *, buf); 127 } 128 129 static void 130 history_str_free(char *buf) 131 { 132 kmem_free(buf, HIS_MAX_RECORD_LEN); 133 } 134 135 static char * 136 history_str_get(zfs_cmd_t *zc) 137 { 138 char *buf; 139 140 if (zc->zc_history == NULL) 141 return (NULL); 142 143 buf = kmem_alloc(HIS_MAX_RECORD_LEN, KM_SLEEP); 144 if (copyinstr((void *)(uintptr_t)zc->zc_history, 145 buf, HIS_MAX_RECORD_LEN, NULL) != 0) { 146 history_str_free(buf); 147 return (NULL); 148 } 149 150 buf[HIS_MAX_RECORD_LEN -1] = '\0'; 151 152 return (buf); 153 } 154 155 static void 156 zfs_log_history(zfs_cmd_t *zc) 157 { 158 spa_t *spa; 159 char *buf; 160 161 if ((buf = history_str_get(zc)) == NULL) 162 return; 163 164 if (spa_open(zc->zc_name, &spa, FTAG) == 0) { 165 if (spa_version(spa) >= SPA_VERSION_ZPOOL_HISTORY) 166 (void) spa_history_log(spa, buf, LOG_CMD_NORMAL); 167 spa_close(spa, FTAG); 168 } 169 history_str_free(buf); 170 } 171 172 /* 173 * Policy for top-level read operations (list pools). Requires no privileges, 174 * and can be used in the local zone, as there is no associated dataset. 175 */ 176 /* ARGSUSED */ 177 static int 178 zfs_secpolicy_none(zfs_cmd_t *zc, cred_t *cr) 179 { 180 return (0); 181 } 182 183 /* 184 * Policy for dataset read operations (list children, get statistics). Requires 185 * no privileges, but must be visible in the local zone. 186 */ 187 /* ARGSUSED */ 188 static int 189 zfs_secpolicy_read(zfs_cmd_t *zc, cred_t *cr) 190 { 191 if (INGLOBALZONE(curproc) || 192 zone_dataset_visible(zc->zc_name, NULL)) 193 return (0); 194 195 return (ENOENT); 196 } 197 198 static int 199 zfs_dozonecheck(const char *dataset, cred_t *cr) 200 { 201 uint64_t zoned; 202 int writable = 1; 203 204 /* 205 * The dataset must be visible by this zone -- check this first 206 * so they don't see EPERM on something they shouldn't know about. 207 */ 208 if (!INGLOBALZONE(curproc) && 209 !zone_dataset_visible(dataset, &writable)) 210 return (ENOENT); 211 212 if (dsl_prop_get_integer(dataset, "zoned", &zoned, NULL)) 213 return (ENOENT); 214 215 if (INGLOBALZONE(curproc)) { 216 /* 217 * If the fs is zoned, only root can access it from the 218 * global zone. 219 */ 220 if (secpolicy_zfs(cr) && zoned) 221 return (EPERM); 222 } else { 223 /* 224 * If we are in a local zone, the 'zoned' property must be set. 225 */ 226 if (!zoned) 227 return (EPERM); 228 229 /* must be writable by this zone */ 230 if (!writable) 231 return (EPERM); 232 } 233 return (0); 234 } 235 236 int 237 zfs_secpolicy_write_perms(const char *name, const char *perm, cred_t *cr) 238 { 239 int error; 240 241 error = zfs_dozonecheck(name, cr); 242 if (error == 0) { 243 error = secpolicy_zfs(cr); 244 if (error) 245 error = dsl_deleg_access(name, perm, cr); 246 } 247 return (error); 248 } 249 250 static int 251 zfs_secpolicy_setprop(const char *name, zfs_prop_t prop, cred_t *cr) 252 { 253 /* 254 * Check permissions for special properties. 255 */ 256 switch (prop) { 257 case ZFS_PROP_ZONED: 258 /* 259 * Disallow setting of 'zoned' from within a local zone. 260 */ 261 if (!INGLOBALZONE(curproc)) 262 return (EPERM); 263 break; 264 265 case ZFS_PROP_QUOTA: 266 if (!INGLOBALZONE(curproc)) { 267 uint64_t zoned; 268 char setpoint[MAXNAMELEN]; 269 /* 270 * Unprivileged users are allowed to modify the 271 * quota on things *under* (ie. contained by) 272 * the thing they own. 273 */ 274 if (dsl_prop_get_integer(name, "zoned", &zoned, 275 setpoint)) 276 return (EPERM); 277 if (!zoned || strlen(name) <= strlen(setpoint)) 278 return (EPERM); 279 } 280 break; 281 } 282 283 return (zfs_secpolicy_write_perms(name, zfs_prop_to_name(prop), cr)); 284 } 285 286 int 287 zfs_secpolicy_fsacl(zfs_cmd_t *zc, cred_t *cr) 288 { 289 int error; 290 291 error = zfs_dozonecheck(zc->zc_name, cr); 292 if (error) 293 return (error); 294 295 /* 296 * permission to set permissions will be evaluated later in 297 * dsl_deleg_can_allow() 298 */ 299 return (0); 300 } 301 302 int 303 zfs_secpolicy_rollback(zfs_cmd_t *zc, cred_t *cr) 304 { 305 int error; 306 error = zfs_secpolicy_write_perms(zc->zc_name, 307 ZFS_DELEG_PERM_ROLLBACK, cr); 308 if (error == 0) 309 error = zfs_secpolicy_write_perms(zc->zc_name, 310 ZFS_DELEG_PERM_MOUNT, cr); 311 return (error); 312 } 313 314 int 315 zfs_secpolicy_send(zfs_cmd_t *zc, cred_t *cr) 316 { 317 return (zfs_secpolicy_write_perms(zc->zc_name, 318 ZFS_DELEG_PERM_SEND, cr)); 319 } 320 321 int 322 zfs_secpolicy_share(zfs_cmd_t *zc, cred_t *cr) 323 { 324 if (!INGLOBALZONE(curproc)) 325 return (EPERM); 326 327 if (secpolicy_nfs(CRED()) == 0) { 328 return (0); 329 } else { 330 vnode_t *vp; 331 int error; 332 333 if ((error = lookupname(zc->zc_value, UIO_SYSSPACE, 334 NO_FOLLOW, NULL, &vp)) != 0) 335 return (error); 336 337 /* Now make sure mntpnt and dataset are ZFS */ 338 339 if (vp->v_vfsp->vfs_fstype != zfsfstype || 340 (strcmp((char *)refstr_value(vp->v_vfsp->vfs_resource), 341 zc->zc_name) != 0)) { 342 VN_RELE(vp); 343 return (EPERM); 344 } 345 346 VN_RELE(vp); 347 return (dsl_deleg_access(zc->zc_name, 348 ZFS_DELEG_PERM_SHARE, cr)); 349 } 350 } 351 352 static int 353 zfs_get_parent(const char *datasetname, char *parent, int parentsize) 354 { 355 char *cp; 356 357 /* 358 * Remove the @bla or /bla from the end of the name to get the parent. 359 */ 360 (void) strncpy(parent, datasetname, parentsize); 361 cp = strrchr(parent, '@'); 362 if (cp != NULL) { 363 cp[0] = '\0'; 364 } else { 365 cp = strrchr(parent, '/'); 366 if (cp == NULL) 367 return (ENOENT); 368 cp[0] = '\0'; 369 } 370 371 return (0); 372 } 373 374 int 375 zfs_secpolicy_destroy_perms(const char *name, cred_t *cr) 376 { 377 int error; 378 379 if ((error = zfs_secpolicy_write_perms(name, 380 ZFS_DELEG_PERM_MOUNT, cr)) != 0) 381 return (error); 382 383 return (zfs_secpolicy_write_perms(name, ZFS_DELEG_PERM_DESTROY, cr)); 384 } 385 386 static int 387 zfs_secpolicy_destroy(zfs_cmd_t *zc, cred_t *cr) 388 { 389 return (zfs_secpolicy_destroy_perms(zc->zc_name, cr)); 390 } 391 392 /* 393 * Must have sys_config privilege to check the iscsi permission 394 */ 395 /* ARGSUSED */ 396 static int 397 zfs_secpolicy_iscsi(zfs_cmd_t *zc, cred_t *cr) 398 { 399 return (secpolicy_zfs(cr)); 400 } 401 402 int 403 zfs_secpolicy_rename_perms(const char *from, const char *to, cred_t *cr) 404 { 405 char parentname[MAXNAMELEN]; 406 int error; 407 408 if ((error = zfs_secpolicy_write_perms(from, 409 ZFS_DELEG_PERM_RENAME, cr)) != 0) 410 return (error); 411 412 if ((error = zfs_secpolicy_write_perms(from, 413 ZFS_DELEG_PERM_MOUNT, cr)) != 0) 414 return (error); 415 416 if ((error = zfs_get_parent(to, parentname, 417 sizeof (parentname))) != 0) 418 return (error); 419 420 if ((error = zfs_secpolicy_write_perms(parentname, 421 ZFS_DELEG_PERM_CREATE, cr)) != 0) 422 return (error); 423 424 if ((error = zfs_secpolicy_write_perms(parentname, 425 ZFS_DELEG_PERM_MOUNT, cr)) != 0) 426 return (error); 427 428 return (error); 429 } 430 431 static int 432 zfs_secpolicy_rename(zfs_cmd_t *zc, cred_t *cr) 433 { 434 return (zfs_secpolicy_rename_perms(zc->zc_name, zc->zc_value, cr)); 435 } 436 437 static int 438 zfs_secpolicy_promote(zfs_cmd_t *zc, cred_t *cr) 439 { 440 char parentname[MAXNAMELEN]; 441 objset_t *clone; 442 int error; 443 444 error = zfs_secpolicy_write_perms(zc->zc_name, 445 ZFS_DELEG_PERM_PROMOTE, cr); 446 if (error) 447 return (error); 448 449 error = dmu_objset_open(zc->zc_name, DMU_OST_ANY, 450 DS_MODE_STANDARD | DS_MODE_READONLY, &clone); 451 452 if (error == 0) { 453 dsl_dataset_t *pclone = NULL; 454 dsl_dir_t *dd; 455 dd = clone->os->os_dsl_dataset->ds_dir; 456 457 rw_enter(&dd->dd_pool->dp_config_rwlock, RW_READER); 458 error = dsl_dataset_open_obj(dd->dd_pool, 459 dd->dd_phys->dd_clone_parent_obj, NULL, 460 DS_MODE_NONE, FTAG, &pclone); 461 rw_exit(&dd->dd_pool->dp_config_rwlock); 462 if (error) { 463 dmu_objset_close(clone); 464 return (error); 465 } 466 467 error = zfs_secpolicy_write_perms(zc->zc_name, 468 ZFS_DELEG_PERM_MOUNT, cr); 469 470 dsl_dataset_name(pclone, parentname); 471 dmu_objset_close(clone); 472 dsl_dataset_close(pclone, DS_MODE_NONE, FTAG); 473 if (error == 0) 474 error = zfs_secpolicy_write_perms(parentname, 475 ZFS_DELEG_PERM_PROMOTE, cr); 476 } 477 return (error); 478 } 479 480 static int 481 zfs_secpolicy_receive(zfs_cmd_t *zc, cred_t *cr) 482 { 483 int error; 484 485 if ((error = zfs_secpolicy_write_perms(zc->zc_name, 486 ZFS_DELEG_PERM_RECEIVE, cr)) != 0) 487 return (error); 488 489 if ((error = zfs_secpolicy_write_perms(zc->zc_name, 490 ZFS_DELEG_PERM_MOUNT, cr)) != 0) 491 return (error); 492 493 return (zfs_secpolicy_write_perms(zc->zc_name, 494 ZFS_DELEG_PERM_CREATE, cr)); 495 } 496 497 int 498 zfs_secpolicy_snapshot_perms(const char *name, cred_t *cr) 499 { 500 int error; 501 502 if ((error = zfs_secpolicy_write_perms(name, 503 ZFS_DELEG_PERM_SNAPSHOT, cr)) != 0) 504 return (error); 505 506 error = zfs_secpolicy_write_perms(name, 507 ZFS_DELEG_PERM_MOUNT, cr); 508 509 return (error); 510 } 511 512 static int 513 zfs_secpolicy_snapshot(zfs_cmd_t *zc, cred_t *cr) 514 { 515 516 return (zfs_secpolicy_snapshot_perms(zc->zc_name, cr)); 517 } 518 519 static int 520 zfs_secpolicy_create(zfs_cmd_t *zc, cred_t *cr) 521 { 522 char parentname[MAXNAMELEN]; 523 int error; 524 525 if ((error = zfs_get_parent(zc->zc_name, parentname, 526 sizeof (parentname))) != 0) 527 return (error); 528 529 if (zc->zc_value[0] != '\0') { 530 if ((error = zfs_secpolicy_write_perms(zc->zc_value, 531 ZFS_DELEG_PERM_CLONE, cr)) != 0) 532 return (error); 533 } 534 535 if ((error = zfs_secpolicy_write_perms(parentname, 536 ZFS_DELEG_PERM_CREATE, cr)) != 0) 537 return (error); 538 539 error = zfs_secpolicy_write_perms(parentname, 540 ZFS_DELEG_PERM_MOUNT, cr); 541 542 return (error); 543 } 544 545 static int 546 zfs_secpolicy_umount(zfs_cmd_t *zc, cred_t *cr) 547 { 548 int error; 549 550 error = secpolicy_fs_unmount(cr, NULL); 551 if (error) { 552 error = dsl_deleg_access(zc->zc_name, ZFS_DELEG_PERM_MOUNT, cr); 553 } 554 return (error); 555 } 556 557 /* 558 * Policy for pool operations - create/destroy pools, add vdevs, etc. Requires 559 * SYS_CONFIG privilege, which is not available in a local zone. 560 */ 561 /* ARGSUSED */ 562 static int 563 zfs_secpolicy_config(zfs_cmd_t *zc, cred_t *cr) 564 { 565 if (secpolicy_sys_config(cr, B_FALSE) != 0) 566 return (EPERM); 567 568 return (0); 569 } 570 571 /* 572 * Just like zfs_secpolicy_config, except that we will check for 573 * mount permission on the dataset for permission to create/remove 574 * the minor nodes. 575 */ 576 static int 577 zfs_secpolicy_minor(zfs_cmd_t *zc, cred_t *cr) 578 { 579 if (secpolicy_sys_config(cr, B_FALSE) != 0) { 580 return (dsl_deleg_access(zc->zc_name, 581 ZFS_DELEG_PERM_MOUNT, cr)); 582 } 583 584 return (0); 585 } 586 587 /* 588 * Policy for fault injection. Requires all privileges. 589 */ 590 /* ARGSUSED */ 591 static int 592 zfs_secpolicy_inject(zfs_cmd_t *zc, cred_t *cr) 593 { 594 return (secpolicy_zinject(cr)); 595 } 596 597 static int 598 zfs_secpolicy_inherit(zfs_cmd_t *zc, cred_t *cr) 599 { 600 zfs_prop_t prop = zfs_name_to_prop(zc->zc_value); 601 602 if (prop == ZPROP_INVAL) { 603 if (!zfs_prop_user(zc->zc_value)) 604 return (EINVAL); 605 return (zfs_secpolicy_write_perms(zc->zc_name, 606 ZFS_DELEG_PERM_USERPROP, cr)); 607 } else { 608 if (!zfs_prop_inheritable(prop)) 609 return (EINVAL); 610 return (zfs_secpolicy_setprop(zc->zc_name, prop, cr)); 611 } 612 } 613 614 /* 615 * Returns the nvlist as specified by the user in the zfs_cmd_t. 616 */ 617 static int 618 get_nvlist(uint64_t nvl, uint64_t size, nvlist_t **nvp) 619 { 620 char *packed; 621 int error; 622 nvlist_t *list = NULL; 623 624 /* 625 * Read in and unpack the user-supplied nvlist. 626 */ 627 if (size == 0) 628 return (EINVAL); 629 630 packed = kmem_alloc(size, KM_SLEEP); 631 632 if ((error = xcopyin((void *)(uintptr_t)nvl, packed, size)) != 0) { 633 kmem_free(packed, size); 634 return (error); 635 } 636 637 if ((error = nvlist_unpack(packed, size, &list, 0)) != 0) { 638 kmem_free(packed, size); 639 return (error); 640 } 641 642 kmem_free(packed, size); 643 644 *nvp = list; 645 return (0); 646 } 647 648 static int 649 put_nvlist(zfs_cmd_t *zc, nvlist_t *nvl) 650 { 651 char *packed = NULL; 652 size_t size; 653 int error; 654 655 VERIFY(nvlist_size(nvl, &size, NV_ENCODE_NATIVE) == 0); 656 657 if (size > zc->zc_nvlist_dst_size) { 658 error = ENOMEM; 659 } else { 660 packed = kmem_alloc(size, KM_SLEEP); 661 VERIFY(nvlist_pack(nvl, &packed, &size, NV_ENCODE_NATIVE, 662 KM_SLEEP) == 0); 663 error = xcopyout(packed, (void *)(uintptr_t)zc->zc_nvlist_dst, 664 size); 665 kmem_free(packed, size); 666 } 667 668 zc->zc_nvlist_dst_size = size; 669 return (error); 670 } 671 672 static int 673 zfs_ioc_pool_create(zfs_cmd_t *zc) 674 { 675 int error; 676 nvlist_t *config, *props = NULL; 677 char *buf; 678 679 if (error = get_nvlist(zc->zc_nvlist_conf, zc->zc_nvlist_conf_size, 680 &config)) 681 return (error); 682 683 if (zc->zc_nvlist_src_size != 0 && (error = 684 get_nvlist(zc->zc_nvlist_src, zc->zc_nvlist_src_size, &props))) { 685 nvlist_free(config); 686 return (error); 687 } 688 689 buf = history_str_get(zc); 690 691 error = spa_create(zc->zc_name, config, props, buf); 692 693 if (buf != NULL) 694 history_str_free(buf); 695 696 nvlist_free(config); 697 698 if (props) 699 nvlist_free(props); 700 701 return (error); 702 } 703 704 static int 705 zfs_ioc_pool_destroy(zfs_cmd_t *zc) 706 { 707 int error; 708 zfs_log_history(zc); 709 error = spa_destroy(zc->zc_name); 710 return (error); 711 } 712 713 static int 714 zfs_ioc_pool_import(zfs_cmd_t *zc) 715 { 716 int error; 717 nvlist_t *config, *props = NULL; 718 uint64_t guid; 719 720 if ((error = get_nvlist(zc->zc_nvlist_conf, zc->zc_nvlist_conf_size, 721 &config)) != 0) 722 return (error); 723 724 if (zc->zc_nvlist_src_size != 0 && (error = 725 get_nvlist(zc->zc_nvlist_src, zc->zc_nvlist_src_size, &props))) { 726 nvlist_free(config); 727 return (error); 728 } 729 730 if (nvlist_lookup_uint64(config, ZPOOL_CONFIG_POOL_GUID, &guid) != 0 || 731 guid != zc->zc_guid) 732 error = EINVAL; 733 else 734 error = spa_import(zc->zc_name, config, props); 735 736 nvlist_free(config); 737 738 if (props) 739 nvlist_free(props); 740 741 return (error); 742 } 743 744 static int 745 zfs_ioc_pool_export(zfs_cmd_t *zc) 746 { 747 int error; 748 zfs_log_history(zc); 749 error = spa_export(zc->zc_name, NULL); 750 return (error); 751 } 752 753 static int 754 zfs_ioc_pool_configs(zfs_cmd_t *zc) 755 { 756 nvlist_t *configs; 757 int error; 758 759 if ((configs = spa_all_configs(&zc->zc_cookie)) == NULL) 760 return (EEXIST); 761 762 error = put_nvlist(zc, configs); 763 764 nvlist_free(configs); 765 766 return (error); 767 } 768 769 static int 770 zfs_ioc_pool_stats(zfs_cmd_t *zc) 771 { 772 nvlist_t *config; 773 int error; 774 int ret = 0; 775 776 error = spa_get_stats(zc->zc_name, &config, zc->zc_value, 777 sizeof (zc->zc_value)); 778 779 if (config != NULL) { 780 ret = put_nvlist(zc, config); 781 nvlist_free(config); 782 783 /* 784 * The config may be present even if 'error' is non-zero. 785 * In this case we return success, and preserve the real errno 786 * in 'zc_cookie'. 787 */ 788 zc->zc_cookie = error; 789 } else { 790 ret = error; 791 } 792 793 return (ret); 794 } 795 796 /* 797 * Try to import the given pool, returning pool stats as appropriate so that 798 * user land knows which devices are available and overall pool health. 799 */ 800 static int 801 zfs_ioc_pool_tryimport(zfs_cmd_t *zc) 802 { 803 nvlist_t *tryconfig, *config; 804 int error; 805 806 if ((error = get_nvlist(zc->zc_nvlist_conf, zc->zc_nvlist_conf_size, 807 &tryconfig)) != 0) 808 return (error); 809 810 config = spa_tryimport(tryconfig); 811 812 nvlist_free(tryconfig); 813 814 if (config == NULL) 815 return (EINVAL); 816 817 error = put_nvlist(zc, config); 818 nvlist_free(config); 819 820 return (error); 821 } 822 823 static int 824 zfs_ioc_pool_scrub(zfs_cmd_t *zc) 825 { 826 spa_t *spa; 827 int error; 828 829 if ((error = spa_open(zc->zc_name, &spa, FTAG)) != 0) 830 return (error); 831 832 mutex_enter(&spa_namespace_lock); 833 error = spa_scrub(spa, zc->zc_cookie, B_FALSE); 834 mutex_exit(&spa_namespace_lock); 835 836 spa_close(spa, FTAG); 837 838 return (error); 839 } 840 841 static int 842 zfs_ioc_pool_freeze(zfs_cmd_t *zc) 843 { 844 spa_t *spa; 845 int error; 846 847 error = spa_open(zc->zc_name, &spa, FTAG); 848 if (error == 0) { 849 spa_freeze(spa); 850 spa_close(spa, FTAG); 851 } 852 return (error); 853 } 854 855 static int 856 zfs_ioc_pool_upgrade(zfs_cmd_t *zc) 857 { 858 spa_t *spa; 859 int error; 860 861 if ((error = spa_open(zc->zc_name, &spa, FTAG)) != 0) 862 return (error); 863 864 spa_upgrade(spa, zc->zc_cookie); 865 spa_close(spa, FTAG); 866 867 return (error); 868 } 869 870 static int 871 zfs_ioc_pool_get_history(zfs_cmd_t *zc) 872 { 873 spa_t *spa; 874 char *hist_buf; 875 uint64_t size; 876 int error; 877 878 if ((size = zc->zc_history_len) == 0) 879 return (EINVAL); 880 881 if ((error = spa_open(zc->zc_name, &spa, FTAG)) != 0) 882 return (error); 883 884 if (spa_version(spa) < SPA_VERSION_ZPOOL_HISTORY) { 885 spa_close(spa, FTAG); 886 return (ENOTSUP); 887 } 888 889 hist_buf = kmem_alloc(size, KM_SLEEP); 890 if ((error = spa_history_get(spa, &zc->zc_history_offset, 891 &zc->zc_history_len, hist_buf)) == 0) { 892 error = xcopyout(hist_buf, 893 (char *)(uintptr_t)zc->zc_history, 894 zc->zc_history_len); 895 } 896 897 spa_close(spa, FTAG); 898 kmem_free(hist_buf, size); 899 return (error); 900 } 901 902 static int 903 zfs_ioc_dsobj_to_dsname(zfs_cmd_t *zc) 904 { 905 int error; 906 907 if (error = dsl_dsobj_to_dsname(zc->zc_name, zc->zc_obj, zc->zc_value)) 908 return (error); 909 910 return (0); 911 } 912 913 static int 914 zfs_ioc_obj_to_path(zfs_cmd_t *zc) 915 { 916 objset_t *osp; 917 int error; 918 919 if ((error = dmu_objset_open(zc->zc_name, DMU_OST_ZFS, 920 DS_MODE_NONE | DS_MODE_READONLY, &osp)) != 0) 921 return (error); 922 923 error = zfs_obj_to_path(osp, zc->zc_obj, zc->zc_value, 924 sizeof (zc->zc_value)); 925 dmu_objset_close(osp); 926 927 return (error); 928 } 929 930 static int 931 zfs_ioc_vdev_add(zfs_cmd_t *zc) 932 { 933 spa_t *spa; 934 int error; 935 nvlist_t *config; 936 937 error = spa_open(zc->zc_name, &spa, FTAG); 938 if (error != 0) 939 return (error); 940 941 /* 942 * A root pool with concatenated devices is not supported. 943 * Thus, can not add a device to a root pool with one device. 944 */ 945 if (spa->spa_root_vdev->vdev_children == 1 && spa->spa_bootfs != 0) { 946 spa_close(spa, FTAG); 947 return (EDOM); 948 } 949 950 if ((error = get_nvlist(zc->zc_nvlist_conf, zc->zc_nvlist_conf_size, 951 &config)) == 0) { 952 error = spa_vdev_add(spa, config); 953 nvlist_free(config); 954 } 955 spa_close(spa, FTAG); 956 return (error); 957 } 958 959 static int 960 zfs_ioc_vdev_remove(zfs_cmd_t *zc) 961 { 962 spa_t *spa; 963 int error; 964 965 error = spa_open(zc->zc_name, &spa, FTAG); 966 if (error != 0) 967 return (error); 968 error = spa_vdev_remove(spa, zc->zc_guid, B_FALSE); 969 spa_close(spa, FTAG); 970 return (error); 971 } 972 973 static int 974 zfs_ioc_vdev_set_state(zfs_cmd_t *zc) 975 { 976 spa_t *spa; 977 int error; 978 vdev_state_t newstate = VDEV_STATE_UNKNOWN; 979 980 if ((error = spa_open(zc->zc_name, &spa, FTAG)) != 0) 981 return (error); 982 switch (zc->zc_cookie) { 983 case VDEV_STATE_ONLINE: 984 error = vdev_online(spa, zc->zc_guid, zc->zc_obj, &newstate); 985 break; 986 987 case VDEV_STATE_OFFLINE: 988 error = vdev_offline(spa, zc->zc_guid, zc->zc_obj); 989 break; 990 991 case VDEV_STATE_FAULTED: 992 error = vdev_fault(spa, zc->zc_guid); 993 break; 994 995 case VDEV_STATE_DEGRADED: 996 error = vdev_degrade(spa, zc->zc_guid); 997 break; 998 999 default: 1000 error = EINVAL; 1001 } 1002 zc->zc_cookie = newstate; 1003 spa_close(spa, FTAG); 1004 return (error); 1005 } 1006 1007 static int 1008 zfs_ioc_vdev_attach(zfs_cmd_t *zc) 1009 { 1010 spa_t *spa; 1011 int replacing = zc->zc_cookie; 1012 nvlist_t *config; 1013 int error; 1014 1015 if ((error = spa_open(zc->zc_name, &spa, FTAG)) != 0) 1016 return (error); 1017 1018 if ((error = get_nvlist(zc->zc_nvlist_conf, zc->zc_nvlist_conf_size, 1019 &config)) == 0) { 1020 error = spa_vdev_attach(spa, zc->zc_guid, config, replacing); 1021 nvlist_free(config); 1022 } 1023 1024 spa_close(spa, FTAG); 1025 return (error); 1026 } 1027 1028 static int 1029 zfs_ioc_vdev_detach(zfs_cmd_t *zc) 1030 { 1031 spa_t *spa; 1032 int error; 1033 1034 if ((error = spa_open(zc->zc_name, &spa, FTAG)) != 0) 1035 return (error); 1036 1037 error = spa_vdev_detach(spa, zc->zc_guid, B_FALSE); 1038 1039 spa_close(spa, FTAG); 1040 return (error); 1041 } 1042 1043 static int 1044 zfs_ioc_vdev_setpath(zfs_cmd_t *zc) 1045 { 1046 spa_t *spa; 1047 char *path = zc->zc_value; 1048 uint64_t guid = zc->zc_guid; 1049 int error; 1050 1051 error = spa_open(zc->zc_name, &spa, FTAG); 1052 if (error != 0) 1053 return (error); 1054 1055 error = spa_vdev_setpath(spa, guid, path); 1056 spa_close(spa, FTAG); 1057 return (error); 1058 } 1059 1060 static int 1061 zfs_ioc_objset_stats(zfs_cmd_t *zc) 1062 { 1063 objset_t *os = NULL; 1064 int error; 1065 nvlist_t *nv; 1066 1067 retry: 1068 error = dmu_objset_open(zc->zc_name, DMU_OST_ANY, 1069 DS_MODE_STANDARD | DS_MODE_READONLY, &os); 1070 if (error != 0) { 1071 /* 1072 * This is ugly: dmu_objset_open() can return EBUSY if 1073 * the objset is held exclusively. Fortunately this hold is 1074 * only for a short while, so we retry here. 1075 * This avoids user code having to handle EBUSY, 1076 * for example for a "zfs list". 1077 */ 1078 if (error == EBUSY) { 1079 delay(1); 1080 goto retry; 1081 } 1082 return (error); 1083 } 1084 1085 dmu_objset_fast_stat(os, &zc->zc_objset_stats); 1086 1087 if (zc->zc_nvlist_dst != 0 && 1088 (error = dsl_prop_get_all(os, &nv)) == 0) { 1089 dmu_objset_stats(os, nv); 1090 /* 1091 * NB: {zpl,zvol}_get_stats() will read the objset contents, 1092 * which we aren't supposed to do with a 1093 * DS_MODE_STANDARD open, because it could be 1094 * inconsistent. So this is a bit of a workaround... 1095 */ 1096 if (!zc->zc_objset_stats.dds_inconsistent) { 1097 if (dmu_objset_type(os) == DMU_OST_ZVOL) 1098 VERIFY(zvol_get_stats(os, nv) == 0); 1099 else if (dmu_objset_type(os) == DMU_OST_ZFS) 1100 (void) zfs_get_stats(os, nv); 1101 } 1102 error = put_nvlist(zc, nv); 1103 nvlist_free(nv); 1104 } 1105 1106 spa_altroot(dmu_objset_spa(os), zc->zc_value, sizeof (zc->zc_value)); 1107 1108 dmu_objset_close(os); 1109 return (error); 1110 } 1111 1112 static int 1113 zfs_ioc_dataset_list_next(zfs_cmd_t *zc) 1114 { 1115 objset_t *os; 1116 int error; 1117 char *p; 1118 1119 retry: 1120 error = dmu_objset_open(zc->zc_name, DMU_OST_ANY, 1121 DS_MODE_STANDARD | DS_MODE_READONLY, &os); 1122 if (error != 0) { 1123 /* 1124 * This is ugly: dmu_objset_open() can return EBUSY if 1125 * the objset is held exclusively. Fortunately this hold is 1126 * only for a short while, so we retry here. 1127 * This avoids user code having to handle EBUSY, 1128 * for example for a "zfs list". 1129 */ 1130 if (error == EBUSY) { 1131 delay(1); 1132 goto retry; 1133 } 1134 if (error == ENOENT) 1135 error = ESRCH; 1136 return (error); 1137 } 1138 1139 p = strrchr(zc->zc_name, '/'); 1140 if (p == NULL || p[1] != '\0') 1141 (void) strlcat(zc->zc_name, "/", sizeof (zc->zc_name)); 1142 p = zc->zc_name + strlen(zc->zc_name); 1143 1144 do { 1145 error = dmu_dir_list_next(os, 1146 sizeof (zc->zc_name) - (p - zc->zc_name), p, 1147 NULL, &zc->zc_cookie); 1148 if (error == ENOENT) 1149 error = ESRCH; 1150 } while (error == 0 && !INGLOBALZONE(curproc) && 1151 !zone_dataset_visible(zc->zc_name, NULL)); 1152 1153 /* 1154 * If it's a hidden dataset (ie. with a '$' in its name), don't 1155 * try to get stats for it. Userland will skip over it. 1156 */ 1157 if (error == 0 && strchr(zc->zc_name, '$') == NULL) 1158 error = zfs_ioc_objset_stats(zc); /* fill in the stats */ 1159 1160 dmu_objset_close(os); 1161 return (error); 1162 } 1163 1164 static int 1165 zfs_ioc_snapshot_list_next(zfs_cmd_t *zc) 1166 { 1167 objset_t *os; 1168 int error; 1169 1170 retry: 1171 error = dmu_objset_open(zc->zc_name, DMU_OST_ANY, 1172 DS_MODE_STANDARD | DS_MODE_READONLY, &os); 1173 if (error != 0) { 1174 /* 1175 * This is ugly: dmu_objset_open() can return EBUSY if 1176 * the objset is held exclusively. Fortunately this hold is 1177 * only for a short while, so we retry here. 1178 * This avoids user code having to handle EBUSY, 1179 * for example for a "zfs list". 1180 */ 1181 if (error == EBUSY) { 1182 delay(1); 1183 goto retry; 1184 } 1185 if (error == ENOENT) 1186 error = ESRCH; 1187 return (error); 1188 } 1189 1190 /* 1191 * A dataset name of maximum length cannot have any snapshots, 1192 * so exit immediately. 1193 */ 1194 if (strlcat(zc->zc_name, "@", sizeof (zc->zc_name)) >= MAXNAMELEN) { 1195 dmu_objset_close(os); 1196 return (ESRCH); 1197 } 1198 1199 error = dmu_snapshot_list_next(os, 1200 sizeof (zc->zc_name) - strlen(zc->zc_name), 1201 zc->zc_name + strlen(zc->zc_name), NULL, &zc->zc_cookie); 1202 if (error == ENOENT) 1203 error = ESRCH; 1204 1205 if (error == 0) 1206 error = zfs_ioc_objset_stats(zc); /* fill in the stats */ 1207 1208 dmu_objset_close(os); 1209 return (error); 1210 } 1211 1212 static int 1213 zfs_set_prop_nvlist(const char *name, nvlist_t *nvl) 1214 { 1215 nvpair_t *elem; 1216 int error; 1217 uint64_t intval; 1218 char *strval; 1219 1220 /* 1221 * First validate permission to set all of the properties 1222 */ 1223 elem = NULL; 1224 while ((elem = nvlist_next_nvpair(nvl, elem)) != NULL) { 1225 const char *propname = nvpair_name(elem); 1226 zfs_prop_t prop = zfs_name_to_prop(propname); 1227 1228 if (prop == ZPROP_INVAL) { 1229 /* 1230 * If this is a user-defined property, it must be a 1231 * string, and there is no further validation to do. 1232 */ 1233 if (!zfs_prop_user(propname) || 1234 nvpair_type(elem) != DATA_TYPE_STRING) 1235 return (EINVAL); 1236 1237 error = zfs_secpolicy_write_perms(name, 1238 ZFS_DELEG_PERM_USERPROP, CRED()); 1239 if (error) 1240 return (error); 1241 continue; 1242 } 1243 1244 if ((error = zfs_secpolicy_setprop(name, prop, CRED())) != 0) 1245 return (error); 1246 1247 /* 1248 * Check that this value is valid for this pool version 1249 */ 1250 switch (prop) { 1251 case ZFS_PROP_COMPRESSION: 1252 /* 1253 * If the user specified gzip compression, make sure 1254 * the SPA supports it. We ignore any errors here since 1255 * we'll catch them later. 1256 */ 1257 if (nvpair_type(elem) == DATA_TYPE_UINT64 && 1258 nvpair_value_uint64(elem, &intval) == 0 && 1259 intval >= ZIO_COMPRESS_GZIP_1 && 1260 intval <= ZIO_COMPRESS_GZIP_9) { 1261 spa_t *spa; 1262 1263 if (spa_open(name, &spa, FTAG) == 0) { 1264 if (spa_version(spa) < 1265 SPA_VERSION_GZIP_COMPRESSION) { 1266 spa_close(spa, FTAG); 1267 return (ENOTSUP); 1268 } 1269 1270 spa_close(spa, FTAG); 1271 } 1272 } 1273 break; 1274 1275 case ZFS_PROP_COPIES: 1276 { 1277 spa_t *spa; 1278 1279 if (spa_open(name, &spa, FTAG) == 0) { 1280 if (spa_version(spa) < 1281 SPA_VERSION_DITTO_BLOCKS) { 1282 spa_close(spa, FTAG); 1283 return (ENOTSUP); 1284 } 1285 spa_close(spa, FTAG); 1286 } 1287 break; 1288 } 1289 } 1290 } 1291 1292 elem = NULL; 1293 while ((elem = nvlist_next_nvpair(nvl, elem)) != NULL) { 1294 const char *propname = nvpair_name(elem); 1295 zfs_prop_t prop = zfs_name_to_prop(propname); 1296 1297 if (prop == ZPROP_INVAL) { 1298 VERIFY(nvpair_value_string(elem, &strval) == 0); 1299 error = dsl_prop_set(name, propname, 1, 1300 strlen(strval) + 1, strval); 1301 if (error == 0) 1302 continue; 1303 else 1304 return (error); 1305 } 1306 1307 switch (prop) { 1308 case ZFS_PROP_QUOTA: 1309 if ((error = nvpair_value_uint64(elem, &intval)) != 0 || 1310 (error = dsl_dir_set_quota(name, intval)) != 0) 1311 return (error); 1312 break; 1313 1314 case ZFS_PROP_RESERVATION: 1315 if ((error = nvpair_value_uint64(elem, &intval)) != 0 || 1316 (error = dsl_dir_set_reservation(name, 1317 intval)) != 0) 1318 return (error); 1319 break; 1320 1321 case ZFS_PROP_VOLSIZE: 1322 if ((error = nvpair_value_uint64(elem, &intval)) != 0 || 1323 (error = zvol_set_volsize(name, 1324 ddi_driver_major(zfs_dip), intval)) != 0) 1325 return (error); 1326 break; 1327 1328 case ZFS_PROP_VOLBLOCKSIZE: 1329 if ((error = nvpair_value_uint64(elem, &intval)) != 0 || 1330 (error = zvol_set_volblocksize(name, intval)) != 0) 1331 return (error); 1332 break; 1333 1334 case ZFS_PROP_VERSION: 1335 if ((error = nvpair_value_uint64(elem, &intval)) != 0 || 1336 (error = zfs_set_version(name, intval)) != 0) 1337 return (error); 1338 break; 1339 1340 default: 1341 if (nvpair_type(elem) == DATA_TYPE_STRING) { 1342 if (zfs_prop_get_type(prop) != 1343 PROP_TYPE_STRING) 1344 return (EINVAL); 1345 VERIFY(nvpair_value_string(elem, &strval) == 0); 1346 if ((error = dsl_prop_set(name, 1347 nvpair_name(elem), 1, strlen(strval) + 1, 1348 strval)) != 0) 1349 return (error); 1350 } else if (nvpair_type(elem) == DATA_TYPE_UINT64) { 1351 const char *unused; 1352 1353 VERIFY(nvpair_value_uint64(elem, &intval) == 0); 1354 1355 switch (zfs_prop_get_type(prop)) { 1356 case PROP_TYPE_NUMBER: 1357 break; 1358 case PROP_TYPE_STRING: 1359 return (EINVAL); 1360 case PROP_TYPE_INDEX: 1361 if (zfs_prop_index_to_string(prop, 1362 intval, &unused) != 0) 1363 return (EINVAL); 1364 break; 1365 default: 1366 cmn_err(CE_PANIC, 1367 "unknown property type"); 1368 break; 1369 } 1370 1371 if ((error = dsl_prop_set(name, propname, 1372 8, 1, &intval)) != 0) 1373 return (error); 1374 } else { 1375 return (EINVAL); 1376 } 1377 break; 1378 } 1379 } 1380 1381 return (0); 1382 } 1383 1384 static int 1385 zfs_ioc_set_prop(zfs_cmd_t *zc) 1386 { 1387 nvlist_t *nvl; 1388 int error; 1389 1390 if ((error = get_nvlist(zc->zc_nvlist_src, zc->zc_nvlist_src_size, 1391 &nvl)) != 0) 1392 return (error); 1393 1394 error = zfs_set_prop_nvlist(zc->zc_name, nvl); 1395 1396 nvlist_free(nvl); 1397 return (error); 1398 } 1399 1400 static int 1401 zfs_ioc_inherit_prop(zfs_cmd_t *zc) 1402 { 1403 /* the property name has been validated by zfs_secpolicy_inherit() */ 1404 return (dsl_prop_set(zc->zc_name, zc->zc_value, 0, 0, NULL)); 1405 } 1406 1407 static int 1408 zfs_ioc_pool_set_props(zfs_cmd_t *zc) 1409 { 1410 nvlist_t *props; 1411 spa_t *spa; 1412 int error; 1413 1414 if ((error = get_nvlist(zc->zc_nvlist_src, zc->zc_nvlist_src_size, 1415 &props))) 1416 return (error); 1417 1418 if ((error = spa_open(zc->zc_name, &spa, FTAG)) != 0) { 1419 nvlist_free(props); 1420 return (error); 1421 } 1422 1423 error = spa_prop_set(spa, props); 1424 1425 nvlist_free(props); 1426 spa_close(spa, FTAG); 1427 1428 return (error); 1429 } 1430 1431 static int 1432 zfs_ioc_pool_get_props(zfs_cmd_t *zc) 1433 { 1434 spa_t *spa; 1435 int error; 1436 nvlist_t *nvp = NULL; 1437 1438 if ((error = spa_open(zc->zc_name, &spa, FTAG)) != 0) 1439 return (error); 1440 1441 error = spa_prop_get(spa, &nvp); 1442 1443 if (error == 0 && zc->zc_nvlist_dst != NULL) 1444 error = put_nvlist(zc, nvp); 1445 else 1446 error = EFAULT; 1447 1448 spa_close(spa, FTAG); 1449 1450 if (nvp) 1451 nvlist_free(nvp); 1452 return (error); 1453 } 1454 1455 static int 1456 zfs_ioc_iscsi_perm_check(zfs_cmd_t *zc) 1457 { 1458 nvlist_t *nvp; 1459 int error; 1460 uint32_t uid; 1461 uint32_t gid; 1462 uint32_t *groups; 1463 uint_t group_cnt; 1464 cred_t *usercred; 1465 1466 if ((error = get_nvlist(zc->zc_nvlist_src, zc->zc_nvlist_src_size, 1467 &nvp)) != 0) { 1468 return (error); 1469 } 1470 1471 if ((error = nvlist_lookup_uint32(nvp, 1472 ZFS_DELEG_PERM_UID, &uid)) != 0) { 1473 nvlist_free(nvp); 1474 return (EPERM); 1475 } 1476 1477 if ((error = nvlist_lookup_uint32(nvp, 1478 ZFS_DELEG_PERM_GID, &gid)) != 0) { 1479 nvlist_free(nvp); 1480 return (EPERM); 1481 } 1482 1483 if ((error = nvlist_lookup_uint32_array(nvp, ZFS_DELEG_PERM_GROUPS, 1484 &groups, &group_cnt)) != 0) { 1485 nvlist_free(nvp); 1486 return (EPERM); 1487 } 1488 usercred = cralloc(); 1489 if ((crsetugid(usercred, uid, gid) != 0) || 1490 (crsetgroups(usercred, group_cnt, (gid_t *)groups) != 0)) { 1491 nvlist_free(nvp); 1492 crfree(usercred); 1493 return (EPERM); 1494 } 1495 nvlist_free(nvp); 1496 error = dsl_deleg_access(zc->zc_name, 1497 zfs_prop_to_name(ZFS_PROP_SHAREISCSI), usercred); 1498 crfree(usercred); 1499 return (error); 1500 } 1501 1502 static int 1503 zfs_ioc_set_fsacl(zfs_cmd_t *zc) 1504 { 1505 int error; 1506 nvlist_t *fsaclnv = NULL; 1507 1508 if ((error = get_nvlist(zc->zc_nvlist_src, zc->zc_nvlist_src_size, 1509 &fsaclnv)) != 0) 1510 return (error); 1511 1512 /* 1513 * Verify nvlist is constructed correctly 1514 */ 1515 if ((error = zfs_deleg_verify_nvlist(fsaclnv)) != 0) { 1516 nvlist_free(fsaclnv); 1517 return (EINVAL); 1518 } 1519 1520 /* 1521 * If we don't have PRIV_SYS_MOUNT, then validate 1522 * that user is allowed to hand out each permission in 1523 * the nvlist(s) 1524 */ 1525 1526 error = secpolicy_zfs(CRED()); 1527 if (error) { 1528 if (zc->zc_perm_action == B_FALSE) { 1529 error = dsl_deleg_can_allow(zc->zc_name, 1530 fsaclnv, CRED()); 1531 } else { 1532 error = dsl_deleg_can_unallow(zc->zc_name, 1533 fsaclnv, CRED()); 1534 } 1535 } 1536 1537 if (error == 0) 1538 error = dsl_deleg_set(zc->zc_name, fsaclnv, zc->zc_perm_action); 1539 1540 nvlist_free(fsaclnv); 1541 return (error); 1542 } 1543 1544 static int 1545 zfs_ioc_get_fsacl(zfs_cmd_t *zc) 1546 { 1547 nvlist_t *nvp; 1548 int error; 1549 1550 if ((error = dsl_deleg_get(zc->zc_name, &nvp)) == 0) { 1551 error = put_nvlist(zc, nvp); 1552 nvlist_free(nvp); 1553 } 1554 1555 return (error); 1556 } 1557 1558 static int 1559 zfs_ioc_create_minor(zfs_cmd_t *zc) 1560 { 1561 return (zvol_create_minor(zc->zc_name, ddi_driver_major(zfs_dip))); 1562 } 1563 1564 static int 1565 zfs_ioc_remove_minor(zfs_cmd_t *zc) 1566 { 1567 return (zvol_remove_minor(zc->zc_name)); 1568 } 1569 1570 /* 1571 * Search the vfs list for a specified resource. Returns a pointer to it 1572 * or NULL if no suitable entry is found. The caller of this routine 1573 * is responsible for releasing the returned vfs pointer. 1574 */ 1575 static vfs_t * 1576 zfs_get_vfs(const char *resource) 1577 { 1578 struct vfs *vfsp; 1579 struct vfs *vfs_found = NULL; 1580 1581 vfs_list_read_lock(); 1582 vfsp = rootvfs; 1583 do { 1584 if (strcmp(refstr_value(vfsp->vfs_resource), resource) == 0) { 1585 VFS_HOLD(vfsp); 1586 vfs_found = vfsp; 1587 break; 1588 } 1589 vfsp = vfsp->vfs_next; 1590 } while (vfsp != rootvfs); 1591 vfs_list_unlock(); 1592 return (vfs_found); 1593 } 1594 1595 /* ARGSUSED */ 1596 static void 1597 zfs_create_cb(objset_t *os, void *arg, cred_t *cr, dmu_tx_t *tx) 1598 { 1599 nvlist_t *nvprops = arg; 1600 uint64_t version = ZPL_VERSION; 1601 1602 (void) nvlist_lookup_uint64(nvprops, 1603 zfs_prop_to_name(ZFS_PROP_VERSION), &version); 1604 1605 zfs_create_fs(os, cr, version, tx); 1606 } 1607 1608 static int 1609 zfs_ioc_create(zfs_cmd_t *zc) 1610 { 1611 objset_t *clone; 1612 int error = 0; 1613 nvlist_t *nvprops = NULL; 1614 void (*cbfunc)(objset_t *os, void *arg, cred_t *cr, dmu_tx_t *tx); 1615 dmu_objset_type_t type = zc->zc_objset_type; 1616 1617 switch (type) { 1618 1619 case DMU_OST_ZFS: 1620 cbfunc = zfs_create_cb; 1621 break; 1622 1623 case DMU_OST_ZVOL: 1624 cbfunc = zvol_create_cb; 1625 break; 1626 1627 default: 1628 cbfunc = NULL; 1629 } 1630 if (strchr(zc->zc_name, '@')) 1631 return (EINVAL); 1632 1633 if (zc->zc_nvlist_src != NULL && 1634 (error = get_nvlist(zc->zc_nvlist_src, zc->zc_nvlist_src_size, 1635 &nvprops)) != 0) 1636 return (error); 1637 1638 if (zc->zc_value[0] != '\0') { 1639 /* 1640 * We're creating a clone of an existing snapshot. 1641 */ 1642 zc->zc_value[sizeof (zc->zc_value) - 1] = '\0'; 1643 if (dataset_namecheck(zc->zc_value, NULL, NULL) != 0) { 1644 nvlist_free(nvprops); 1645 return (EINVAL); 1646 } 1647 1648 error = dmu_objset_open(zc->zc_value, type, 1649 DS_MODE_STANDARD | DS_MODE_READONLY, &clone); 1650 if (error) { 1651 nvlist_free(nvprops); 1652 return (error); 1653 } 1654 error = dmu_objset_create(zc->zc_name, type, clone, NULL, NULL); 1655 dmu_objset_close(clone); 1656 } else { 1657 if (cbfunc == NULL) { 1658 nvlist_free(nvprops); 1659 return (EINVAL); 1660 } 1661 1662 if (type == DMU_OST_ZVOL) { 1663 uint64_t volsize, volblocksize; 1664 1665 if (nvprops == NULL || 1666 nvlist_lookup_uint64(nvprops, 1667 zfs_prop_to_name(ZFS_PROP_VOLSIZE), 1668 &volsize) != 0) { 1669 nvlist_free(nvprops); 1670 return (EINVAL); 1671 } 1672 1673 if ((error = nvlist_lookup_uint64(nvprops, 1674 zfs_prop_to_name(ZFS_PROP_VOLBLOCKSIZE), 1675 &volblocksize)) != 0 && error != ENOENT) { 1676 nvlist_free(nvprops); 1677 return (EINVAL); 1678 } 1679 1680 if (error != 0) 1681 volblocksize = zfs_prop_default_numeric( 1682 ZFS_PROP_VOLBLOCKSIZE); 1683 1684 if ((error = zvol_check_volblocksize( 1685 volblocksize)) != 0 || 1686 (error = zvol_check_volsize(volsize, 1687 volblocksize)) != 0) { 1688 nvlist_free(nvprops); 1689 return (error); 1690 } 1691 } else if (type == DMU_OST_ZFS) { 1692 uint64_t version; 1693 1694 if (0 == nvlist_lookup_uint64(nvprops, 1695 zfs_prop_to_name(ZFS_PROP_VERSION), &version) && 1696 (version < ZPL_VERSION_INITIAL || 1697 version > ZPL_VERSION)) { 1698 nvlist_free(nvprops); 1699 return (EINVAL); 1700 } 1701 } 1702 1703 error = dmu_objset_create(zc->zc_name, type, NULL, cbfunc, 1704 nvprops); 1705 } 1706 1707 /* 1708 * It would be nice to do this atomically. 1709 */ 1710 if (error == 0) { 1711 if ((error = zfs_set_prop_nvlist(zc->zc_name, nvprops)) != 0) 1712 (void) dmu_objset_destroy(zc->zc_name); 1713 } 1714 1715 nvlist_free(nvprops); 1716 return (error); 1717 } 1718 1719 static int 1720 zfs_ioc_snapshot(zfs_cmd_t *zc) 1721 { 1722 if (snapshot_namecheck(zc->zc_value, NULL, NULL) != 0) 1723 return (EINVAL); 1724 return (dmu_objset_snapshot(zc->zc_name, 1725 zc->zc_value, zc->zc_cookie)); 1726 } 1727 1728 int 1729 zfs_unmount_snap(char *name, void *arg) 1730 { 1731 char *snapname = arg; 1732 char *cp; 1733 vfs_t *vfsp = NULL; 1734 1735 /* 1736 * Snapshots (which are under .zfs control) must be unmounted 1737 * before they can be destroyed. 1738 */ 1739 1740 if (snapname) { 1741 (void) strcat(name, "@"); 1742 (void) strcat(name, snapname); 1743 vfsp = zfs_get_vfs(name); 1744 cp = strchr(name, '@'); 1745 *cp = '\0'; 1746 } else if (strchr(name, '@')) { 1747 vfsp = zfs_get_vfs(name); 1748 } 1749 1750 if (vfsp) { 1751 /* 1752 * Always force the unmount for snapshots. 1753 */ 1754 int flag = MS_FORCE; 1755 int err; 1756 1757 if ((err = vn_vfswlock(vfsp->vfs_vnodecovered)) != 0) { 1758 VFS_RELE(vfsp); 1759 return (err); 1760 } 1761 VFS_RELE(vfsp); 1762 if ((err = dounmount(vfsp, flag, kcred)) != 0) 1763 return (err); 1764 } 1765 return (0); 1766 } 1767 1768 static int 1769 zfs_ioc_destroy_snaps(zfs_cmd_t *zc) 1770 { 1771 int err; 1772 1773 if (snapshot_namecheck(zc->zc_value, NULL, NULL) != 0) 1774 return (EINVAL); 1775 err = dmu_objset_find(zc->zc_name, 1776 zfs_unmount_snap, zc->zc_value, DS_FIND_CHILDREN); 1777 if (err) 1778 return (err); 1779 return (dmu_snapshots_destroy(zc->zc_name, zc->zc_value)); 1780 } 1781 1782 static int 1783 zfs_ioc_destroy(zfs_cmd_t *zc) 1784 { 1785 if (strchr(zc->zc_name, '@') && zc->zc_objset_type == DMU_OST_ZFS) { 1786 int err = zfs_unmount_snap(zc->zc_name, NULL); 1787 if (err) 1788 return (err); 1789 } 1790 1791 return (dmu_objset_destroy(zc->zc_name)); 1792 } 1793 1794 static int 1795 zfs_ioc_rollback(zfs_cmd_t *zc) 1796 { 1797 return (dmu_objset_rollback(zc->zc_name)); 1798 } 1799 1800 static int 1801 zfs_ioc_rename(zfs_cmd_t *zc) 1802 { 1803 boolean_t recursive = zc->zc_cookie & 1; 1804 1805 zc->zc_value[sizeof (zc->zc_value) - 1] = '\0'; 1806 if (dataset_namecheck(zc->zc_value, NULL, NULL) != 0) 1807 return (EINVAL); 1808 1809 /* 1810 * Unmount snapshot unless we're doing a recursive rename, 1811 * in which case the dataset code figures out which snapshots 1812 * to unmount. 1813 */ 1814 if (!recursive && strchr(zc->zc_name, '@') != NULL && 1815 zc->zc_objset_type == DMU_OST_ZFS) { 1816 int err = zfs_unmount_snap(zc->zc_name, NULL); 1817 if (err) 1818 return (err); 1819 } 1820 1821 return (dmu_objset_rename(zc->zc_name, zc->zc_value, recursive)); 1822 } 1823 1824 static int 1825 zfs_ioc_recvbackup(zfs_cmd_t *zc) 1826 { 1827 file_t *fp; 1828 int error, fd; 1829 offset_t new_off; 1830 1831 if (dataset_namecheck(zc->zc_value, NULL, NULL) != 0 || 1832 strchr(zc->zc_value, '@') == NULL) 1833 return (EINVAL); 1834 1835 fd = zc->zc_cookie; 1836 fp = getf(fd); 1837 if (fp == NULL) 1838 return (EBADF); 1839 error = dmu_recvbackup(zc->zc_value, &zc->zc_begin_record, 1840 &zc->zc_cookie, (boolean_t)zc->zc_guid, fp->f_vnode, 1841 fp->f_offset); 1842 1843 new_off = fp->f_offset + zc->zc_cookie; 1844 if (VOP_SEEK(fp->f_vnode, fp->f_offset, &new_off) == 0) 1845 fp->f_offset = new_off; 1846 1847 releasef(fd); 1848 return (error); 1849 } 1850 1851 static int 1852 zfs_ioc_sendbackup(zfs_cmd_t *zc) 1853 { 1854 objset_t *fromsnap = NULL; 1855 objset_t *tosnap; 1856 file_t *fp; 1857 int error; 1858 1859 error = dmu_objset_open(zc->zc_name, DMU_OST_ANY, 1860 DS_MODE_STANDARD | DS_MODE_READONLY, &tosnap); 1861 if (error) 1862 return (error); 1863 1864 if (zc->zc_value[0] != '\0') { 1865 char buf[MAXPATHLEN]; 1866 char *cp; 1867 1868 (void) strncpy(buf, zc->zc_name, sizeof (buf)); 1869 cp = strchr(buf, '@'); 1870 if (cp) 1871 *(cp+1) = 0; 1872 (void) strncat(buf, zc->zc_value, sizeof (buf)); 1873 error = dmu_objset_open(buf, DMU_OST_ANY, 1874 DS_MODE_STANDARD | DS_MODE_READONLY, &fromsnap); 1875 if (error) { 1876 dmu_objset_close(tosnap); 1877 return (error); 1878 } 1879 } 1880 1881 fp = getf(zc->zc_cookie); 1882 if (fp == NULL) { 1883 dmu_objset_close(tosnap); 1884 if (fromsnap) 1885 dmu_objset_close(fromsnap); 1886 return (EBADF); 1887 } 1888 1889 error = dmu_sendbackup(tosnap, fromsnap, fp->f_vnode); 1890 1891 releasef(zc->zc_cookie); 1892 if (fromsnap) 1893 dmu_objset_close(fromsnap); 1894 dmu_objset_close(tosnap); 1895 return (error); 1896 } 1897 1898 static int 1899 zfs_ioc_inject_fault(zfs_cmd_t *zc) 1900 { 1901 int id, error; 1902 1903 error = zio_inject_fault(zc->zc_name, (int)zc->zc_guid, &id, 1904 &zc->zc_inject_record); 1905 1906 if (error == 0) 1907 zc->zc_guid = (uint64_t)id; 1908 1909 return (error); 1910 } 1911 1912 static int 1913 zfs_ioc_clear_fault(zfs_cmd_t *zc) 1914 { 1915 return (zio_clear_fault((int)zc->zc_guid)); 1916 } 1917 1918 static int 1919 zfs_ioc_inject_list_next(zfs_cmd_t *zc) 1920 { 1921 int id = (int)zc->zc_guid; 1922 int error; 1923 1924 error = zio_inject_list_next(&id, zc->zc_name, sizeof (zc->zc_name), 1925 &zc->zc_inject_record); 1926 1927 zc->zc_guid = id; 1928 1929 return (error); 1930 } 1931 1932 static int 1933 zfs_ioc_error_log(zfs_cmd_t *zc) 1934 { 1935 spa_t *spa; 1936 int error; 1937 size_t count = (size_t)zc->zc_nvlist_dst_size; 1938 1939 if ((error = spa_open(zc->zc_name, &spa, FTAG)) != 0) 1940 return (error); 1941 1942 error = spa_get_errlog(spa, (void *)(uintptr_t)zc->zc_nvlist_dst, 1943 &count); 1944 if (error == 0) 1945 zc->zc_nvlist_dst_size = count; 1946 else 1947 zc->zc_nvlist_dst_size = spa_get_errlog_size(spa); 1948 1949 spa_close(spa, FTAG); 1950 1951 return (error); 1952 } 1953 1954 static int 1955 zfs_ioc_clear(zfs_cmd_t *zc) 1956 { 1957 spa_t *spa; 1958 vdev_t *vd; 1959 uint64_t txg; 1960 int error; 1961 1962 if ((error = spa_open(zc->zc_name, &spa, FTAG)) != 0) 1963 return (error); 1964 1965 txg = spa_vdev_enter(spa); 1966 1967 if (zc->zc_guid == 0) { 1968 vd = NULL; 1969 } else if ((vd = spa_lookup_by_guid(spa, zc->zc_guid)) == NULL) { 1970 (void) spa_vdev_exit(spa, NULL, txg, ENODEV); 1971 spa_close(spa, FTAG); 1972 return (ENODEV); 1973 } 1974 1975 vdev_clear(spa, vd); 1976 1977 (void) spa_vdev_exit(spa, NULL, txg, 0); 1978 1979 spa_close(spa, FTAG); 1980 1981 return (0); 1982 } 1983 1984 static int 1985 zfs_ioc_promote(zfs_cmd_t *zc) 1986 { 1987 char *cp; 1988 1989 /* 1990 * We don't need to unmount *all* the origin fs's snapshots, but 1991 * it's easier. 1992 */ 1993 cp = strchr(zc->zc_value, '@'); 1994 if (cp) 1995 *cp = '\0'; 1996 (void) dmu_objset_find(zc->zc_value, 1997 zfs_unmount_snap, NULL, DS_FIND_SNAPSHOTS); 1998 return (dsl_dataset_promote(zc->zc_name)); 1999 } 2000 2001 /* 2002 * We don't want to have a hard dependency 2003 * against some special symbols in sharefs 2004 * and nfs. Determine them if needed when 2005 * the first file system is shared. 2006 * Neither sharefs or nfs are unloadable modules. 2007 */ 2008 int (*zexport_fs)(void *arg); 2009 int (*zshare_fs)(enum sharefs_sys_op, share_t *, uint32_t); 2010 2011 int zfs_share_inited; 2012 ddi_modhandle_t nfs_mod; 2013 ddi_modhandle_t sharefs_mod; 2014 kmutex_t zfs_share_lock; 2015 2016 static int 2017 zfs_ioc_share(zfs_cmd_t *zc) 2018 { 2019 int error; 2020 int opcode; 2021 2022 if (zfs_share_inited == 0) { 2023 mutex_enter(&zfs_share_lock); 2024 nfs_mod = ddi_modopen("fs/nfs", KRTLD_MODE_FIRST, &error); 2025 sharefs_mod = ddi_modopen("fs/sharefs", 2026 KRTLD_MODE_FIRST, &error); 2027 if (nfs_mod == NULL || sharefs_mod == NULL) { 2028 mutex_exit(&zfs_share_lock); 2029 return (ENOSYS); 2030 } 2031 if (zexport_fs == NULL && ((zexport_fs = (int (*)(void *)) 2032 ddi_modsym(nfs_mod, "nfs_export", &error)) == NULL)) { 2033 mutex_exit(&zfs_share_lock); 2034 return (ENOSYS); 2035 } 2036 2037 if (zshare_fs == NULL && ((zshare_fs = 2038 (int (*)(enum sharefs_sys_op, share_t *, uint32_t)) 2039 ddi_modsym(sharefs_mod, "sharefs_impl", &error)) == NULL)) { 2040 mutex_exit(&zfs_share_lock); 2041 return (ENOSYS); 2042 } 2043 zfs_share_inited = 1; 2044 mutex_exit(&zfs_share_lock); 2045 } 2046 2047 if (error = zexport_fs((void *)(uintptr_t)zc->zc_share.z_exportdata)) 2048 return (error); 2049 2050 opcode = (zc->zc_share.z_sharetype == B_TRUE) ? 2051 SHAREFS_ADD : SHAREFS_REMOVE; 2052 2053 error = zshare_fs(opcode, 2054 (void *)(uintptr_t)zc->zc_share.z_sharedata, 2055 zc->zc_share.z_sharemax); 2056 2057 return (error); 2058 2059 } 2060 2061 /* 2062 * pool create, destroy, and export don't log the history as part of 2063 * zfsdev_ioctl, but rather zfs_ioc_pool_create, and zfs_ioc_pool_export 2064 * do the logging of those commands. 2065 */ 2066 static zfs_ioc_vec_t zfs_ioc_vec[] = { 2067 { zfs_ioc_pool_create, zfs_secpolicy_config, POOL_NAME, B_FALSE }, 2068 { zfs_ioc_pool_destroy, zfs_secpolicy_config, POOL_NAME, B_FALSE }, 2069 { zfs_ioc_pool_import, zfs_secpolicy_config, POOL_NAME, B_TRUE }, 2070 { zfs_ioc_pool_export, zfs_secpolicy_config, POOL_NAME, B_FALSE }, 2071 { zfs_ioc_pool_configs, zfs_secpolicy_none, NO_NAME, B_FALSE }, 2072 { zfs_ioc_pool_stats, zfs_secpolicy_read, POOL_NAME, B_FALSE }, 2073 { zfs_ioc_pool_tryimport, zfs_secpolicy_config, NO_NAME, B_FALSE }, 2074 { zfs_ioc_pool_scrub, zfs_secpolicy_config, POOL_NAME, B_TRUE }, 2075 { zfs_ioc_pool_freeze, zfs_secpolicy_config, NO_NAME, B_FALSE }, 2076 { zfs_ioc_pool_upgrade, zfs_secpolicy_config, POOL_NAME, B_TRUE }, 2077 { zfs_ioc_pool_get_history, zfs_secpolicy_config, POOL_NAME, B_FALSE }, 2078 { zfs_ioc_vdev_add, zfs_secpolicy_config, POOL_NAME, B_TRUE }, 2079 { zfs_ioc_vdev_remove, zfs_secpolicy_config, POOL_NAME, B_TRUE }, 2080 { zfs_ioc_vdev_set_state, zfs_secpolicy_config, POOL_NAME, B_TRUE }, 2081 { zfs_ioc_vdev_attach, zfs_secpolicy_config, POOL_NAME, B_TRUE }, 2082 { zfs_ioc_vdev_detach, zfs_secpolicy_config, POOL_NAME, B_TRUE }, 2083 { zfs_ioc_vdev_setpath, zfs_secpolicy_config, POOL_NAME, B_FALSE }, 2084 { zfs_ioc_objset_stats, zfs_secpolicy_read, DATASET_NAME, B_FALSE }, 2085 { zfs_ioc_dataset_list_next, zfs_secpolicy_read, 2086 DATASET_NAME, B_FALSE }, 2087 { zfs_ioc_snapshot_list_next, zfs_secpolicy_read, 2088 DATASET_NAME, B_FALSE }, 2089 { zfs_ioc_set_prop, zfs_secpolicy_none, DATASET_NAME, B_TRUE }, 2090 { zfs_ioc_create_minor, zfs_secpolicy_minor, DATASET_NAME, B_FALSE }, 2091 { zfs_ioc_remove_minor, zfs_secpolicy_minor, DATASET_NAME, B_FALSE }, 2092 { zfs_ioc_create, zfs_secpolicy_create, DATASET_NAME, B_TRUE }, 2093 { zfs_ioc_destroy, zfs_secpolicy_destroy, DATASET_NAME, B_TRUE }, 2094 { zfs_ioc_rollback, zfs_secpolicy_rollback, DATASET_NAME, B_TRUE }, 2095 { zfs_ioc_rename, zfs_secpolicy_rename, DATASET_NAME, B_TRUE }, 2096 { zfs_ioc_recvbackup, zfs_secpolicy_receive, DATASET_NAME, B_TRUE }, 2097 { zfs_ioc_sendbackup, zfs_secpolicy_send, DATASET_NAME, B_TRUE }, 2098 { zfs_ioc_inject_fault, zfs_secpolicy_inject, NO_NAME, B_FALSE }, 2099 { zfs_ioc_clear_fault, zfs_secpolicy_inject, NO_NAME, B_FALSE }, 2100 { zfs_ioc_inject_list_next, zfs_secpolicy_inject, NO_NAME, B_FALSE }, 2101 { zfs_ioc_error_log, zfs_secpolicy_inject, POOL_NAME, B_FALSE }, 2102 { zfs_ioc_clear, zfs_secpolicy_config, POOL_NAME, B_TRUE }, 2103 { zfs_ioc_promote, zfs_secpolicy_promote, DATASET_NAME, B_TRUE }, 2104 { zfs_ioc_destroy_snaps, zfs_secpolicy_destroy, DATASET_NAME, B_TRUE }, 2105 { zfs_ioc_snapshot, zfs_secpolicy_snapshot, DATASET_NAME, B_TRUE }, 2106 { zfs_ioc_dsobj_to_dsname, zfs_secpolicy_config, POOL_NAME, B_FALSE }, 2107 { zfs_ioc_obj_to_path, zfs_secpolicy_config, NO_NAME, B_FALSE }, 2108 { zfs_ioc_pool_set_props, zfs_secpolicy_config, POOL_NAME, B_TRUE }, 2109 { zfs_ioc_pool_get_props, zfs_secpolicy_read, POOL_NAME, B_FALSE }, 2110 { zfs_ioc_set_fsacl, zfs_secpolicy_fsacl, DATASET_NAME, B_TRUE }, 2111 { zfs_ioc_get_fsacl, zfs_secpolicy_read, DATASET_NAME, B_FALSE }, 2112 { zfs_ioc_iscsi_perm_check, zfs_secpolicy_iscsi, 2113 DATASET_NAME, B_FALSE }, 2114 { zfs_ioc_share, zfs_secpolicy_share, DATASET_NAME, B_FALSE }, 2115 { zfs_ioc_inherit_prop, zfs_secpolicy_inherit, DATASET_NAME, B_TRUE }, 2116 }; 2117 2118 static int 2119 zfsdev_ioctl(dev_t dev, int cmd, intptr_t arg, int flag, cred_t *cr, int *rvalp) 2120 { 2121 zfs_cmd_t *zc; 2122 uint_t vec; 2123 int error, rc; 2124 2125 if (getminor(dev) != 0) 2126 return (zvol_ioctl(dev, cmd, arg, flag, cr, rvalp)); 2127 2128 vec = cmd - ZFS_IOC; 2129 ASSERT3U(getmajor(dev), ==, ddi_driver_major(zfs_dip)); 2130 2131 if (vec >= sizeof (zfs_ioc_vec) / sizeof (zfs_ioc_vec[0])) 2132 return (EINVAL); 2133 2134 zc = kmem_zalloc(sizeof (zfs_cmd_t), KM_SLEEP); 2135 2136 error = xcopyin((void *)arg, zc, sizeof (zfs_cmd_t)); 2137 2138 if (error == 0) 2139 error = zfs_ioc_vec[vec].zvec_secpolicy(zc, cr); 2140 2141 /* 2142 * Ensure that all pool/dataset names are valid before we pass down to 2143 * the lower layers. 2144 */ 2145 if (error == 0) { 2146 zc->zc_name[sizeof (zc->zc_name) - 1] = '\0'; 2147 switch (zfs_ioc_vec[vec].zvec_namecheck) { 2148 case POOL_NAME: 2149 if (pool_namecheck(zc->zc_name, NULL, NULL) != 0) 2150 error = EINVAL; 2151 break; 2152 2153 case DATASET_NAME: 2154 if (dataset_namecheck(zc->zc_name, NULL, NULL) != 0) 2155 error = EINVAL; 2156 break; 2157 2158 case NO_NAME: 2159 break; 2160 } 2161 } 2162 2163 if (error == 0) 2164 error = zfs_ioc_vec[vec].zvec_func(zc); 2165 2166 rc = xcopyout(zc, (void *)arg, sizeof (zfs_cmd_t)); 2167 if (error == 0) { 2168 error = rc; 2169 if (zfs_ioc_vec[vec].zvec_his_log == B_TRUE) 2170 zfs_log_history(zc); 2171 } 2172 2173 kmem_free(zc, sizeof (zfs_cmd_t)); 2174 return (error); 2175 } 2176 2177 static int 2178 zfs_attach(dev_info_t *dip, ddi_attach_cmd_t cmd) 2179 { 2180 if (cmd != DDI_ATTACH) 2181 return (DDI_FAILURE); 2182 2183 if (ddi_create_minor_node(dip, "zfs", S_IFCHR, 0, 2184 DDI_PSEUDO, 0) == DDI_FAILURE) 2185 return (DDI_FAILURE); 2186 2187 zfs_dip = dip; 2188 2189 ddi_report_dev(dip); 2190 2191 return (DDI_SUCCESS); 2192 } 2193 2194 static int 2195 zfs_detach(dev_info_t *dip, ddi_detach_cmd_t cmd) 2196 { 2197 if (spa_busy() || zfs_busy() || zvol_busy()) 2198 return (DDI_FAILURE); 2199 2200 if (cmd != DDI_DETACH) 2201 return (DDI_FAILURE); 2202 2203 zfs_dip = NULL; 2204 2205 ddi_prop_remove_all(dip); 2206 ddi_remove_minor_node(dip, NULL); 2207 2208 return (DDI_SUCCESS); 2209 } 2210 2211 /*ARGSUSED*/ 2212 static int 2213 zfs_info(dev_info_t *dip, ddi_info_cmd_t infocmd, void *arg, void **result) 2214 { 2215 switch (infocmd) { 2216 case DDI_INFO_DEVT2DEVINFO: 2217 *result = zfs_dip; 2218 return (DDI_SUCCESS); 2219 2220 case DDI_INFO_DEVT2INSTANCE: 2221 *result = (void *)0; 2222 return (DDI_SUCCESS); 2223 } 2224 2225 return (DDI_FAILURE); 2226 } 2227 2228 /* 2229 * OK, so this is a little weird. 2230 * 2231 * /dev/zfs is the control node, i.e. minor 0. 2232 * /dev/zvol/[r]dsk/pool/dataset are the zvols, minor > 0. 2233 * 2234 * /dev/zfs has basically nothing to do except serve up ioctls, 2235 * so most of the standard driver entry points are in zvol.c. 2236 */ 2237 static struct cb_ops zfs_cb_ops = { 2238 zvol_open, /* open */ 2239 zvol_close, /* close */ 2240 zvol_strategy, /* strategy */ 2241 nodev, /* print */ 2242 nodev, /* dump */ 2243 zvol_read, /* read */ 2244 zvol_write, /* write */ 2245 zfsdev_ioctl, /* ioctl */ 2246 nodev, /* devmap */ 2247 nodev, /* mmap */ 2248 nodev, /* segmap */ 2249 nochpoll, /* poll */ 2250 ddi_prop_op, /* prop_op */ 2251 NULL, /* streamtab */ 2252 D_NEW | D_MP | D_64BIT, /* Driver compatibility flag */ 2253 CB_REV, /* version */ 2254 nodev, /* async read */ 2255 nodev, /* async write */ 2256 }; 2257 2258 static struct dev_ops zfs_dev_ops = { 2259 DEVO_REV, /* version */ 2260 0, /* refcnt */ 2261 zfs_info, /* info */ 2262 nulldev, /* identify */ 2263 nulldev, /* probe */ 2264 zfs_attach, /* attach */ 2265 zfs_detach, /* detach */ 2266 nodev, /* reset */ 2267 &zfs_cb_ops, /* driver operations */ 2268 NULL /* no bus operations */ 2269 }; 2270 2271 static struct modldrv zfs_modldrv = { 2272 &mod_driverops, "ZFS storage pool version " SPA_VERSION_STRING, 2273 &zfs_dev_ops 2274 }; 2275 2276 static struct modlinkage modlinkage = { 2277 MODREV_1, 2278 (void *)&zfs_modlfs, 2279 (void *)&zfs_modldrv, 2280 NULL 2281 }; 2282 2283 2284 uint_t zfs_fsyncer_key; 2285 2286 int 2287 _init(void) 2288 { 2289 int error; 2290 2291 spa_init(FREAD | FWRITE); 2292 zfs_init(); 2293 zvol_init(); 2294 2295 if ((error = mod_install(&modlinkage)) != 0) { 2296 zvol_fini(); 2297 zfs_fini(); 2298 spa_fini(); 2299 return (error); 2300 } 2301 2302 tsd_create(&zfs_fsyncer_key, NULL); 2303 2304 error = ldi_ident_from_mod(&modlinkage, &zfs_li); 2305 ASSERT(error == 0); 2306 mutex_init(&zfs_share_lock, NULL, MUTEX_DEFAULT, NULL); 2307 2308 return (0); 2309 } 2310 2311 int 2312 _fini(void) 2313 { 2314 int error; 2315 2316 if (spa_busy() || zfs_busy() || zvol_busy() || zio_injection_enabled) 2317 return (EBUSY); 2318 2319 if ((error = mod_remove(&modlinkage)) != 0) 2320 return (error); 2321 2322 zvol_fini(); 2323 zfs_fini(); 2324 spa_fini(); 2325 if (zfs_share_inited) { 2326 (void) ddi_modclose(nfs_mod); 2327 (void) ddi_modclose(sharefs_mod); 2328 } 2329 2330 tsd_destroy(&zfs_fsyncer_key); 2331 ldi_ident_release(zfs_li); 2332 zfs_li = NULL; 2333 mutex_destroy(&zfs_share_lock); 2334 2335 return (error); 2336 } 2337 2338 int 2339 _info(struct modinfo *modinfop) 2340 { 2341 return (mod_info(&modlinkage, modinfop)); 2342 } 2343