1 /* 2 * CDDL HEADER START 3 * 4 * The contents of this file are subject to the terms of the 5 * Common Development and Distribution License (the "License"). 6 * You may not use this file except in compliance with the License. 7 * 8 * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE 9 * or http://www.opensolaris.org/os/licensing. 10 * See the License for the specific language governing permissions 11 * and limitations under the License. 12 * 13 * When distributing Covered Code, include this CDDL HEADER in each 14 * file and include the License file at usr/src/OPENSOLARIS.LICENSE. 15 * If applicable, add the following below this CDDL HEADER, with the 16 * fields enclosed by brackets "[]" replaced with your own identifying 17 * information: Portions Copyright [yyyy] [name of copyright owner] 18 * 19 * CDDL HEADER END 20 */ 21 /* 22 * Copyright 2009 Sun Microsystems, Inc. All rights reserved. 23 * Use is subject to license terms. 24 */ 25 26 #include <sys/types.h> 27 #include <sys/param.h> 28 #include <sys/errno.h> 29 #include <sys/uio.h> 30 #include <sys/buf.h> 31 #include <sys/modctl.h> 32 #include <sys/open.h> 33 #include <sys/file.h> 34 #include <sys/kmem.h> 35 #include <sys/conf.h> 36 #include <sys/cmn_err.h> 37 #include <sys/stat.h> 38 #include <sys/zfs_ioctl.h> 39 #include <sys/zfs_znode.h> 40 #include <sys/zap.h> 41 #include <sys/spa.h> 42 #include <sys/spa_impl.h> 43 #include <sys/vdev.h> 44 #include <sys/vdev_impl.h> 45 #include <sys/dmu.h> 46 #include <sys/dsl_dir.h> 47 #include <sys/dsl_dataset.h> 48 #include <sys/dsl_prop.h> 49 #include <sys/dsl_deleg.h> 50 #include <sys/dmu_objset.h> 51 #include <sys/ddi.h> 52 #include <sys/sunddi.h> 53 #include <sys/sunldi.h> 54 #include <sys/policy.h> 55 #include <sys/zone.h> 56 #include <sys/nvpair.h> 57 #include <sys/pathname.h> 58 #include <sys/mount.h> 59 #include <sys/sdt.h> 60 #include <sys/fs/zfs.h> 61 #include <sys/zfs_ctldir.h> 62 #include <sys/zfs_dir.h> 63 #include <sys/zvol.h> 64 #include <sharefs/share.h> 65 #include <sys/dmu_objset.h> 66 67 #include "zfs_namecheck.h" 68 #include "zfs_prop.h" 69 #include "zfs_deleg.h" 70 71 extern struct modlfs zfs_modlfs; 72 73 extern void zfs_init(void); 74 extern void zfs_fini(void); 75 76 ldi_ident_t zfs_li = NULL; 77 dev_info_t *zfs_dip; 78 79 typedef int zfs_ioc_func_t(zfs_cmd_t *); 80 typedef int zfs_secpolicy_func_t(zfs_cmd_t *, cred_t *); 81 82 typedef 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 static void clear_props(char *dataset, nvlist_t *props, nvlist_t *newprops); 94 static int zfs_fill_zplprops_root(uint64_t, nvlist_t *, nvlist_t *, 95 boolean_t *); 96 int zfs_set_prop_nvlist(const char *, nvlist_t *); 97 98 /* _NOTE(PRINTFLIKE(4)) - this is printf-like, but lint is too whiney */ 99 void 100 __dprintf(const char *file, const char *func, int line, const char *fmt, ...) 101 { 102 const char *newfile; 103 char buf[256]; 104 va_list adx; 105 106 /* 107 * Get rid of annoying "../common/" prefix to filename. 108 */ 109 newfile = strrchr(file, '/'); 110 if (newfile != NULL) { 111 newfile = newfile + 1; /* Get rid of leading / */ 112 } else { 113 newfile = file; 114 } 115 116 va_start(adx, fmt); 117 (void) vsnprintf(buf, sizeof (buf), fmt, adx); 118 va_end(adx); 119 120 /* 121 * To get this data, use the zfs-dprintf probe as so: 122 * dtrace -q -n 'zfs-dprintf \ 123 * /stringof(arg0) == "dbuf.c"/ \ 124 * {printf("%s: %s", stringof(arg1), stringof(arg3))}' 125 * arg0 = file name 126 * arg1 = function name 127 * arg2 = line number 128 * arg3 = message 129 */ 130 DTRACE_PROBE4(zfs__dprintf, 131 char *, newfile, char *, func, int, line, char *, buf); 132 } 133 134 static void 135 history_str_free(char *buf) 136 { 137 kmem_free(buf, HIS_MAX_RECORD_LEN); 138 } 139 140 static char * 141 history_str_get(zfs_cmd_t *zc) 142 { 143 char *buf; 144 145 if (zc->zc_history == NULL) 146 return (NULL); 147 148 buf = kmem_alloc(HIS_MAX_RECORD_LEN, KM_SLEEP); 149 if (copyinstr((void *)(uintptr_t)zc->zc_history, 150 buf, HIS_MAX_RECORD_LEN, NULL) != 0) { 151 history_str_free(buf); 152 return (NULL); 153 } 154 155 buf[HIS_MAX_RECORD_LEN -1] = '\0'; 156 157 return (buf); 158 } 159 160 /* 161 * Check to see if the named dataset is currently defined as bootable 162 */ 163 static boolean_t 164 zfs_is_bootfs(const char *name) 165 { 166 spa_t *spa; 167 boolean_t ret = B_FALSE; 168 169 if (spa_open(name, &spa, FTAG) == 0) { 170 if (spa->spa_bootfs) { 171 objset_t *os; 172 173 if (dmu_objset_open(name, DMU_OST_ZFS, 174 DS_MODE_USER | DS_MODE_READONLY, &os) == 0) { 175 ret = (dmu_objset_id(os) == spa->spa_bootfs); 176 dmu_objset_close(os); 177 } 178 } 179 spa_close(spa, FTAG); 180 } 181 return (ret); 182 } 183 184 /* 185 * zfs_earlier_version 186 * 187 * Return non-zero if the spa version is less than requested version. 188 */ 189 static int 190 zfs_earlier_version(const char *name, int version) 191 { 192 spa_t *spa; 193 194 if (spa_open(name, &spa, FTAG) == 0) { 195 if (spa_version(spa) < version) { 196 spa_close(spa, FTAG); 197 return (1); 198 } 199 spa_close(spa, FTAG); 200 } 201 return (0); 202 } 203 204 /* 205 * zpl_earlier_version 206 * 207 * Return TRUE if the ZPL version is less than requested version. 208 */ 209 static boolean_t 210 zpl_earlier_version(const char *name, int version) 211 { 212 objset_t *os; 213 boolean_t rc = B_TRUE; 214 215 if (dmu_objset_open(name, DMU_OST_ANY, 216 DS_MODE_USER | DS_MODE_READONLY, &os) == 0) { 217 uint64_t zplversion; 218 219 if (zfs_get_zplprop(os, ZFS_PROP_VERSION, &zplversion) == 0) 220 rc = zplversion < version; 221 dmu_objset_close(os); 222 } 223 return (rc); 224 } 225 226 static void 227 zfs_log_history(zfs_cmd_t *zc) 228 { 229 spa_t *spa; 230 char *buf; 231 232 if ((buf = history_str_get(zc)) == NULL) 233 return; 234 235 if (spa_open(zc->zc_name, &spa, FTAG) == 0) { 236 if (spa_version(spa) >= SPA_VERSION_ZPOOL_HISTORY) 237 (void) spa_history_log(spa, buf, LOG_CMD_NORMAL); 238 spa_close(spa, FTAG); 239 } 240 history_str_free(buf); 241 } 242 243 /* 244 * Policy for top-level read operations (list pools). Requires no privileges, 245 * and can be used in the local zone, as there is no associated dataset. 246 */ 247 /* ARGSUSED */ 248 static int 249 zfs_secpolicy_none(zfs_cmd_t *zc, cred_t *cr) 250 { 251 return (0); 252 } 253 254 /* 255 * Policy for dataset read operations (list children, get statistics). Requires 256 * no privileges, but must be visible in the local zone. 257 */ 258 /* ARGSUSED */ 259 static int 260 zfs_secpolicy_read(zfs_cmd_t *zc, cred_t *cr) 261 { 262 if (INGLOBALZONE(curproc) || 263 zone_dataset_visible(zc->zc_name, NULL)) 264 return (0); 265 266 return (ENOENT); 267 } 268 269 static int 270 zfs_dozonecheck(const char *dataset, cred_t *cr) 271 { 272 uint64_t zoned; 273 int writable = 1; 274 275 /* 276 * The dataset must be visible by this zone -- check this first 277 * so they don't see EPERM on something they shouldn't know about. 278 */ 279 if (!INGLOBALZONE(curproc) && 280 !zone_dataset_visible(dataset, &writable)) 281 return (ENOENT); 282 283 if (dsl_prop_get_integer(dataset, "zoned", &zoned, NULL)) 284 return (ENOENT); 285 286 if (INGLOBALZONE(curproc)) { 287 /* 288 * If the fs is zoned, only root can access it from the 289 * global zone. 290 */ 291 if (secpolicy_zfs(cr) && zoned) 292 return (EPERM); 293 } else { 294 /* 295 * If we are in a local zone, the 'zoned' property must be set. 296 */ 297 if (!zoned) 298 return (EPERM); 299 300 /* must be writable by this zone */ 301 if (!writable) 302 return (EPERM); 303 } 304 return (0); 305 } 306 307 int 308 zfs_secpolicy_write_perms(const char *name, const char *perm, cred_t *cr) 309 { 310 int error; 311 312 error = zfs_dozonecheck(name, cr); 313 if (error == 0) { 314 error = secpolicy_zfs(cr); 315 if (error) 316 error = dsl_deleg_access(name, perm, cr); 317 } 318 return (error); 319 } 320 321 static int 322 zfs_secpolicy_setprop(const char *name, zfs_prop_t prop, cred_t *cr) 323 { 324 /* 325 * Check permissions for special properties. 326 */ 327 switch (prop) { 328 case ZFS_PROP_ZONED: 329 /* 330 * Disallow setting of 'zoned' from within a local zone. 331 */ 332 if (!INGLOBALZONE(curproc)) 333 return (EPERM); 334 break; 335 336 case ZFS_PROP_QUOTA: 337 if (!INGLOBALZONE(curproc)) { 338 uint64_t zoned; 339 char setpoint[MAXNAMELEN]; 340 /* 341 * Unprivileged users are allowed to modify the 342 * quota on things *under* (ie. contained by) 343 * the thing they own. 344 */ 345 if (dsl_prop_get_integer(name, "zoned", &zoned, 346 setpoint)) 347 return (EPERM); 348 if (!zoned || strlen(name) <= strlen(setpoint)) 349 return (EPERM); 350 } 351 break; 352 } 353 354 return (zfs_secpolicy_write_perms(name, zfs_prop_to_name(prop), cr)); 355 } 356 357 int 358 zfs_secpolicy_fsacl(zfs_cmd_t *zc, cred_t *cr) 359 { 360 int error; 361 362 error = zfs_dozonecheck(zc->zc_name, cr); 363 if (error) 364 return (error); 365 366 /* 367 * permission to set permissions will be evaluated later in 368 * dsl_deleg_can_allow() 369 */ 370 return (0); 371 } 372 373 int 374 zfs_secpolicy_rollback(zfs_cmd_t *zc, cred_t *cr) 375 { 376 int error; 377 error = zfs_secpolicy_write_perms(zc->zc_name, 378 ZFS_DELEG_PERM_ROLLBACK, cr); 379 if (error == 0) 380 error = zfs_secpolicy_write_perms(zc->zc_name, 381 ZFS_DELEG_PERM_MOUNT, cr); 382 return (error); 383 } 384 385 int 386 zfs_secpolicy_send(zfs_cmd_t *zc, cred_t *cr) 387 { 388 return (zfs_secpolicy_write_perms(zc->zc_name, 389 ZFS_DELEG_PERM_SEND, cr)); 390 } 391 392 int 393 zfs_secpolicy_share(zfs_cmd_t *zc, cred_t *cr) 394 { 395 if (!INGLOBALZONE(curproc)) 396 return (EPERM); 397 398 if (secpolicy_nfs(cr) == 0) { 399 return (0); 400 } else { 401 vnode_t *vp; 402 int error; 403 404 if ((error = lookupname(zc->zc_value, UIO_SYSSPACE, 405 NO_FOLLOW, NULL, &vp)) != 0) 406 return (error); 407 408 /* Now make sure mntpnt and dataset are ZFS */ 409 410 if (vp->v_vfsp->vfs_fstype != zfsfstype || 411 (strcmp((char *)refstr_value(vp->v_vfsp->vfs_resource), 412 zc->zc_name) != 0)) { 413 VN_RELE(vp); 414 return (EPERM); 415 } 416 417 VN_RELE(vp); 418 return (dsl_deleg_access(zc->zc_name, 419 ZFS_DELEG_PERM_SHARE, cr)); 420 } 421 } 422 423 static int 424 zfs_get_parent(const char *datasetname, char *parent, int parentsize) 425 { 426 char *cp; 427 428 /* 429 * Remove the @bla or /bla from the end of the name to get the parent. 430 */ 431 (void) strncpy(parent, datasetname, parentsize); 432 cp = strrchr(parent, '@'); 433 if (cp != NULL) { 434 cp[0] = '\0'; 435 } else { 436 cp = strrchr(parent, '/'); 437 if (cp == NULL) 438 return (ENOENT); 439 cp[0] = '\0'; 440 } 441 442 return (0); 443 } 444 445 int 446 zfs_secpolicy_destroy_perms(const char *name, cred_t *cr) 447 { 448 int error; 449 450 if ((error = zfs_secpolicy_write_perms(name, 451 ZFS_DELEG_PERM_MOUNT, cr)) != 0) 452 return (error); 453 454 return (zfs_secpolicy_write_perms(name, ZFS_DELEG_PERM_DESTROY, cr)); 455 } 456 457 static int 458 zfs_secpolicy_destroy(zfs_cmd_t *zc, cred_t *cr) 459 { 460 return (zfs_secpolicy_destroy_perms(zc->zc_name, cr)); 461 } 462 463 /* 464 * Must have sys_config privilege to check the iscsi permission 465 */ 466 /* ARGSUSED */ 467 static int 468 zfs_secpolicy_iscsi(zfs_cmd_t *zc, cred_t *cr) 469 { 470 return (secpolicy_zfs(cr)); 471 } 472 473 int 474 zfs_secpolicy_rename_perms(const char *from, const char *to, cred_t *cr) 475 { 476 char parentname[MAXNAMELEN]; 477 int error; 478 479 if ((error = zfs_secpolicy_write_perms(from, 480 ZFS_DELEG_PERM_RENAME, cr)) != 0) 481 return (error); 482 483 if ((error = zfs_secpolicy_write_perms(from, 484 ZFS_DELEG_PERM_MOUNT, cr)) != 0) 485 return (error); 486 487 if ((error = zfs_get_parent(to, parentname, 488 sizeof (parentname))) != 0) 489 return (error); 490 491 if ((error = zfs_secpolicy_write_perms(parentname, 492 ZFS_DELEG_PERM_CREATE, cr)) != 0) 493 return (error); 494 495 if ((error = zfs_secpolicy_write_perms(parentname, 496 ZFS_DELEG_PERM_MOUNT, cr)) != 0) 497 return (error); 498 499 return (error); 500 } 501 502 static int 503 zfs_secpolicy_rename(zfs_cmd_t *zc, cred_t *cr) 504 { 505 return (zfs_secpolicy_rename_perms(zc->zc_name, zc->zc_value, cr)); 506 } 507 508 static int 509 zfs_secpolicy_promote(zfs_cmd_t *zc, cred_t *cr) 510 { 511 char parentname[MAXNAMELEN]; 512 objset_t *clone; 513 int error; 514 515 error = zfs_secpolicy_write_perms(zc->zc_name, 516 ZFS_DELEG_PERM_PROMOTE, cr); 517 if (error) 518 return (error); 519 520 error = dmu_objset_open(zc->zc_name, DMU_OST_ANY, 521 DS_MODE_USER | DS_MODE_READONLY, &clone); 522 523 if (error == 0) { 524 dsl_dataset_t *pclone = NULL; 525 dsl_dir_t *dd; 526 dd = clone->os->os_dsl_dataset->ds_dir; 527 528 rw_enter(&dd->dd_pool->dp_config_rwlock, RW_READER); 529 error = dsl_dataset_hold_obj(dd->dd_pool, 530 dd->dd_phys->dd_origin_obj, FTAG, &pclone); 531 rw_exit(&dd->dd_pool->dp_config_rwlock); 532 if (error) { 533 dmu_objset_close(clone); 534 return (error); 535 } 536 537 error = zfs_secpolicy_write_perms(zc->zc_name, 538 ZFS_DELEG_PERM_MOUNT, cr); 539 540 dsl_dataset_name(pclone, parentname); 541 dmu_objset_close(clone); 542 dsl_dataset_rele(pclone, FTAG); 543 if (error == 0) 544 error = zfs_secpolicy_write_perms(parentname, 545 ZFS_DELEG_PERM_PROMOTE, cr); 546 } 547 return (error); 548 } 549 550 static int 551 zfs_secpolicy_receive(zfs_cmd_t *zc, cred_t *cr) 552 { 553 int error; 554 555 if ((error = zfs_secpolicy_write_perms(zc->zc_name, 556 ZFS_DELEG_PERM_RECEIVE, cr)) != 0) 557 return (error); 558 559 if ((error = zfs_secpolicy_write_perms(zc->zc_name, 560 ZFS_DELEG_PERM_MOUNT, cr)) != 0) 561 return (error); 562 563 return (zfs_secpolicy_write_perms(zc->zc_name, 564 ZFS_DELEG_PERM_CREATE, cr)); 565 } 566 567 int 568 zfs_secpolicy_snapshot_perms(const char *name, cred_t *cr) 569 { 570 int error; 571 572 if ((error = zfs_secpolicy_write_perms(name, 573 ZFS_DELEG_PERM_SNAPSHOT, cr)) != 0) 574 return (error); 575 576 error = zfs_secpolicy_write_perms(name, 577 ZFS_DELEG_PERM_MOUNT, cr); 578 579 return (error); 580 } 581 582 static int 583 zfs_secpolicy_snapshot(zfs_cmd_t *zc, cred_t *cr) 584 { 585 586 return (zfs_secpolicy_snapshot_perms(zc->zc_name, cr)); 587 } 588 589 static int 590 zfs_secpolicy_create(zfs_cmd_t *zc, cred_t *cr) 591 { 592 char parentname[MAXNAMELEN]; 593 int error; 594 595 if ((error = zfs_get_parent(zc->zc_name, parentname, 596 sizeof (parentname))) != 0) 597 return (error); 598 599 if (zc->zc_value[0] != '\0') { 600 if ((error = zfs_secpolicy_write_perms(zc->zc_value, 601 ZFS_DELEG_PERM_CLONE, cr)) != 0) 602 return (error); 603 } 604 605 if ((error = zfs_secpolicy_write_perms(parentname, 606 ZFS_DELEG_PERM_CREATE, cr)) != 0) 607 return (error); 608 609 error = zfs_secpolicy_write_perms(parentname, 610 ZFS_DELEG_PERM_MOUNT, cr); 611 612 return (error); 613 } 614 615 static int 616 zfs_secpolicy_umount(zfs_cmd_t *zc, cred_t *cr) 617 { 618 int error; 619 620 error = secpolicy_fs_unmount(cr, NULL); 621 if (error) { 622 error = dsl_deleg_access(zc->zc_name, ZFS_DELEG_PERM_MOUNT, cr); 623 } 624 return (error); 625 } 626 627 /* 628 * Policy for pool operations - create/destroy pools, add vdevs, etc. Requires 629 * SYS_CONFIG privilege, which is not available in a local zone. 630 */ 631 /* ARGSUSED */ 632 static int 633 zfs_secpolicy_config(zfs_cmd_t *zc, cred_t *cr) 634 { 635 if (secpolicy_sys_config(cr, B_FALSE) != 0) 636 return (EPERM); 637 638 return (0); 639 } 640 641 /* 642 * Just like zfs_secpolicy_config, except that we will check for 643 * mount permission on the dataset for permission to create/remove 644 * the minor nodes. 645 */ 646 static int 647 zfs_secpolicy_minor(zfs_cmd_t *zc, cred_t *cr) 648 { 649 if (secpolicy_sys_config(cr, B_FALSE) != 0) { 650 return (dsl_deleg_access(zc->zc_name, 651 ZFS_DELEG_PERM_MOUNT, cr)); 652 } 653 654 return (0); 655 } 656 657 /* 658 * Policy for fault injection. Requires all privileges. 659 */ 660 /* ARGSUSED */ 661 static int 662 zfs_secpolicy_inject(zfs_cmd_t *zc, cred_t *cr) 663 { 664 return (secpolicy_zinject(cr)); 665 } 666 667 static int 668 zfs_secpolicy_inherit(zfs_cmd_t *zc, cred_t *cr) 669 { 670 zfs_prop_t prop = zfs_name_to_prop(zc->zc_value); 671 672 if (prop == ZPROP_INVAL) { 673 if (!zfs_prop_user(zc->zc_value)) 674 return (EINVAL); 675 return (zfs_secpolicy_write_perms(zc->zc_name, 676 ZFS_DELEG_PERM_USERPROP, cr)); 677 } else { 678 if (!zfs_prop_inheritable(prop)) 679 return (EINVAL); 680 return (zfs_secpolicy_setprop(zc->zc_name, prop, cr)); 681 } 682 } 683 684 /* 685 * Returns the nvlist as specified by the user in the zfs_cmd_t. 686 */ 687 static int 688 get_nvlist(uint64_t nvl, uint64_t size, nvlist_t **nvp) 689 { 690 char *packed; 691 int error; 692 nvlist_t *list = NULL; 693 694 /* 695 * Read in and unpack the user-supplied nvlist. 696 */ 697 if (size == 0) 698 return (EINVAL); 699 700 packed = kmem_alloc(size, KM_SLEEP); 701 702 if ((error = xcopyin((void *)(uintptr_t)nvl, packed, size)) != 0) { 703 kmem_free(packed, size); 704 return (error); 705 } 706 707 if ((error = nvlist_unpack(packed, size, &list, 0)) != 0) { 708 kmem_free(packed, size); 709 return (error); 710 } 711 712 kmem_free(packed, size); 713 714 *nvp = list; 715 return (0); 716 } 717 718 static int 719 put_nvlist(zfs_cmd_t *zc, nvlist_t *nvl) 720 { 721 char *packed = NULL; 722 size_t size; 723 int error; 724 725 VERIFY(nvlist_size(nvl, &size, NV_ENCODE_NATIVE) == 0); 726 727 if (size > zc->zc_nvlist_dst_size) { 728 error = ENOMEM; 729 } else { 730 packed = kmem_alloc(size, KM_SLEEP); 731 VERIFY(nvlist_pack(nvl, &packed, &size, NV_ENCODE_NATIVE, 732 KM_SLEEP) == 0); 733 error = xcopyout(packed, (void *)(uintptr_t)zc->zc_nvlist_dst, 734 size); 735 kmem_free(packed, size); 736 } 737 738 zc->zc_nvlist_dst_size = size; 739 return (error); 740 } 741 742 static int 743 zfs_ioc_pool_create(zfs_cmd_t *zc) 744 { 745 int error; 746 nvlist_t *config, *props = NULL; 747 nvlist_t *rootprops = NULL; 748 nvlist_t *zplprops = NULL; 749 char *buf; 750 751 if (error = get_nvlist(zc->zc_nvlist_conf, zc->zc_nvlist_conf_size, 752 &config)) 753 return (error); 754 755 if (zc->zc_nvlist_src_size != 0 && (error = 756 get_nvlist(zc->zc_nvlist_src, zc->zc_nvlist_src_size, &props))) { 757 nvlist_free(config); 758 return (error); 759 } 760 761 if (props) { 762 nvlist_t *nvl = NULL; 763 uint64_t version = SPA_VERSION; 764 765 (void) nvlist_lookup_uint64(props, 766 zpool_prop_to_name(ZPOOL_PROP_VERSION), &version); 767 if (version < SPA_VERSION_INITIAL || version > SPA_VERSION) { 768 error = EINVAL; 769 goto pool_props_bad; 770 } 771 (void) nvlist_lookup_nvlist(props, ZPOOL_ROOTFS_PROPS, &nvl); 772 if (nvl) { 773 error = nvlist_dup(nvl, &rootprops, KM_SLEEP); 774 if (error != 0) { 775 nvlist_free(config); 776 nvlist_free(props); 777 return (error); 778 } 779 (void) nvlist_remove_all(props, ZPOOL_ROOTFS_PROPS); 780 } 781 VERIFY(nvlist_alloc(&zplprops, NV_UNIQUE_NAME, KM_SLEEP) == 0); 782 error = zfs_fill_zplprops_root(version, rootprops, 783 zplprops, NULL); 784 if (error) 785 goto pool_props_bad; 786 } 787 788 buf = history_str_get(zc); 789 790 error = spa_create(zc->zc_name, config, props, buf, zplprops); 791 792 /* 793 * Set the remaining root properties 794 */ 795 if (!error && 796 (error = zfs_set_prop_nvlist(zc->zc_name, rootprops)) != 0) 797 (void) spa_destroy(zc->zc_name); 798 799 if (buf != NULL) 800 history_str_free(buf); 801 802 pool_props_bad: 803 nvlist_free(rootprops); 804 nvlist_free(zplprops); 805 nvlist_free(config); 806 nvlist_free(props); 807 808 return (error); 809 } 810 811 static int 812 zfs_ioc_pool_destroy(zfs_cmd_t *zc) 813 { 814 int error; 815 zfs_log_history(zc); 816 error = spa_destroy(zc->zc_name); 817 return (error); 818 } 819 820 static int 821 zfs_ioc_pool_import(zfs_cmd_t *zc) 822 { 823 int error; 824 nvlist_t *config, *props = NULL; 825 uint64_t guid; 826 827 if ((error = get_nvlist(zc->zc_nvlist_conf, zc->zc_nvlist_conf_size, 828 &config)) != 0) 829 return (error); 830 831 if (zc->zc_nvlist_src_size != 0 && (error = 832 get_nvlist(zc->zc_nvlist_src, zc->zc_nvlist_src_size, &props))) { 833 nvlist_free(config); 834 return (error); 835 } 836 837 if (nvlist_lookup_uint64(config, ZPOOL_CONFIG_POOL_GUID, &guid) != 0 || 838 guid != zc->zc_guid) 839 error = EINVAL; 840 else if (zc->zc_cookie) 841 error = spa_import_faulted(zc->zc_name, config, 842 props); 843 else 844 error = spa_import(zc->zc_name, config, props); 845 846 nvlist_free(config); 847 848 if (props) 849 nvlist_free(props); 850 851 return (error); 852 } 853 854 static int 855 zfs_ioc_pool_export(zfs_cmd_t *zc) 856 { 857 int error; 858 boolean_t force = (boolean_t)zc->zc_cookie; 859 boolean_t hardforce = (boolean_t)zc->zc_guid; 860 861 zfs_log_history(zc); 862 error = spa_export(zc->zc_name, NULL, force, hardforce); 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, 0, 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 /* 1326 * Pre-fetch the datasets. dmu_objset_prefetch() always returns 0 1327 * but is not declared void because its called by dmu_objset_find(). 1328 */ 1329 if (zc->zc_cookie == 0) { 1330 uint64_t cookie = 0; 1331 int len = sizeof (zc->zc_name) - (p - zc->zc_name); 1332 1333 while (dmu_dir_list_next(os, len, p, NULL, &cookie) == 0) 1334 (void) dmu_objset_prefetch(p, NULL); 1335 } 1336 1337 do { 1338 error = dmu_dir_list_next(os, 1339 sizeof (zc->zc_name) - (p - zc->zc_name), p, 1340 NULL, &zc->zc_cookie); 1341 if (error == ENOENT) 1342 error = ESRCH; 1343 } while (error == 0 && !INGLOBALZONE(curproc) && 1344 !zone_dataset_visible(zc->zc_name, NULL)); 1345 dmu_objset_close(os); 1346 1347 /* 1348 * If it's a hidden dataset (ie. with a '$' in its name), don't 1349 * try to get stats for it. Userland will skip over it. 1350 */ 1351 if (error == 0 && strchr(zc->zc_name, '$') == NULL) 1352 error = zfs_ioc_objset_stats(zc); /* fill in the stats */ 1353 1354 return (error); 1355 } 1356 1357 /* 1358 * inputs: 1359 * zc_name name of filesystem 1360 * zc_cookie zap cursor 1361 * zc_nvlist_dst_size size of buffer for property nvlist 1362 * 1363 * outputs: 1364 * zc_name name of next snapshot 1365 * zc_objset_stats stats 1366 * zc_nvlist_dst property nvlist 1367 * zc_nvlist_dst_size size of property nvlist 1368 */ 1369 static int 1370 zfs_ioc_snapshot_list_next(zfs_cmd_t *zc) 1371 { 1372 objset_t *os; 1373 int error; 1374 1375 error = dmu_objset_open(zc->zc_name, 1376 DMU_OST_ANY, DS_MODE_USER | DS_MODE_READONLY, &os); 1377 if (error) 1378 return (error == ENOENT ? ESRCH : error); 1379 1380 if (zc->zc_cookie == 0) 1381 (void) dmu_objset_find(zc->zc_name, dmu_objset_prefetch, 1382 NULL, DS_FIND_SNAPSHOTS); 1383 /* 1384 * A dataset name of maximum length cannot have any snapshots, 1385 * so exit immediately. 1386 */ 1387 if (strlcat(zc->zc_name, "@", sizeof (zc->zc_name)) >= MAXNAMELEN) { 1388 dmu_objset_close(os); 1389 return (ESRCH); 1390 } 1391 1392 error = dmu_snapshot_list_next(os, 1393 sizeof (zc->zc_name) - strlen(zc->zc_name), 1394 zc->zc_name + strlen(zc->zc_name), NULL, &zc->zc_cookie, NULL); 1395 dmu_objset_close(os); 1396 if (error == 0) 1397 error = zfs_ioc_objset_stats(zc); /* fill in the stats */ 1398 else if (error == ENOENT) 1399 error = ESRCH; 1400 1401 /* if we failed, undo the @ that we tacked on to zc_name */ 1402 if (error) 1403 *strchr(zc->zc_name, '@') = '\0'; 1404 return (error); 1405 } 1406 1407 int 1408 zfs_set_prop_nvlist(const char *name, nvlist_t *nvl) 1409 { 1410 nvpair_t *elem; 1411 int error; 1412 uint64_t intval; 1413 char *strval; 1414 nvlist_t *genericnvl; 1415 1416 /* 1417 * First validate permission to set all of the properties 1418 */ 1419 elem = NULL; 1420 while ((elem = nvlist_next_nvpair(nvl, elem)) != NULL) { 1421 const char *propname = nvpair_name(elem); 1422 zfs_prop_t prop = zfs_name_to_prop(propname); 1423 1424 if (prop == ZPROP_INVAL) { 1425 /* 1426 * If this is a user-defined property, it must be a 1427 * string, and there is no further validation to do. 1428 */ 1429 if (!zfs_prop_user(propname) || 1430 nvpair_type(elem) != DATA_TYPE_STRING) 1431 return (EINVAL); 1432 1433 if (error = zfs_secpolicy_write_perms(name, 1434 ZFS_DELEG_PERM_USERPROP, CRED())) 1435 return (error); 1436 continue; 1437 } 1438 1439 if ((error = zfs_secpolicy_setprop(name, prop, CRED())) != 0) 1440 return (error); 1441 1442 /* 1443 * Check that this value is valid for this pool version 1444 */ 1445 switch (prop) { 1446 case ZFS_PROP_COMPRESSION: 1447 /* 1448 * If the user specified gzip compression, make sure 1449 * the SPA supports it. We ignore any errors here since 1450 * we'll catch them later. 1451 */ 1452 if (nvpair_type(elem) == DATA_TYPE_UINT64 && 1453 nvpair_value_uint64(elem, &intval) == 0) { 1454 if (intval >= ZIO_COMPRESS_GZIP_1 && 1455 intval <= ZIO_COMPRESS_GZIP_9 && 1456 zfs_earlier_version(name, 1457 SPA_VERSION_GZIP_COMPRESSION)) 1458 return (ENOTSUP); 1459 1460 /* 1461 * If this is a bootable dataset then 1462 * verify that the compression algorithm 1463 * is supported for booting. We must return 1464 * something other than ENOTSUP since it 1465 * implies a downrev pool version. 1466 */ 1467 if (zfs_is_bootfs(name) && 1468 !BOOTFS_COMPRESS_VALID(intval)) 1469 return (ERANGE); 1470 } 1471 break; 1472 1473 case ZFS_PROP_COPIES: 1474 if (zfs_earlier_version(name, 1475 SPA_VERSION_DITTO_BLOCKS)) 1476 return (ENOTSUP); 1477 break; 1478 1479 case ZFS_PROP_SHARESMB: 1480 if (zpl_earlier_version(name, ZPL_VERSION_FUID)) 1481 return (ENOTSUP); 1482 break; 1483 1484 case ZFS_PROP_ACLINHERIT: 1485 if (nvpair_type(elem) == DATA_TYPE_UINT64 && 1486 nvpair_value_uint64(elem, &intval) == 0) 1487 if (intval == ZFS_ACL_PASSTHROUGH_X && 1488 zfs_earlier_version(name, 1489 SPA_VERSION_PASSTHROUGH_X)) 1490 return (ENOTSUP); 1491 } 1492 } 1493 1494 VERIFY(nvlist_alloc(&genericnvl, NV_UNIQUE_NAME, KM_SLEEP) == 0); 1495 elem = NULL; 1496 while ((elem = nvlist_next_nvpair(nvl, elem)) != NULL) { 1497 const char *propname = nvpair_name(elem); 1498 zfs_prop_t prop = zfs_name_to_prop(propname); 1499 1500 if (prop == ZPROP_INVAL) { 1501 VERIFY(nvpair_value_string(elem, &strval) == 0); 1502 error = dsl_prop_set(name, propname, 1, 1503 strlen(strval) + 1, strval); 1504 if (error == 0) 1505 continue; 1506 else 1507 goto out; 1508 } 1509 1510 switch (prop) { 1511 case ZFS_PROP_QUOTA: 1512 if ((error = nvpair_value_uint64(elem, &intval)) != 0 || 1513 (error = dsl_dir_set_quota(name, intval)) != 0) 1514 goto out; 1515 break; 1516 1517 case ZFS_PROP_REFQUOTA: 1518 if ((error = nvpair_value_uint64(elem, &intval)) != 0 || 1519 (error = dsl_dataset_set_quota(name, intval)) != 0) 1520 goto out; 1521 break; 1522 1523 case ZFS_PROP_RESERVATION: 1524 if ((error = nvpair_value_uint64(elem, &intval)) != 0 || 1525 (error = dsl_dir_set_reservation(name, 1526 intval)) != 0) 1527 goto out; 1528 break; 1529 1530 case ZFS_PROP_REFRESERVATION: 1531 if ((error = nvpair_value_uint64(elem, &intval)) != 0 || 1532 (error = dsl_dataset_set_reservation(name, 1533 intval)) != 0) 1534 goto out; 1535 break; 1536 1537 case ZFS_PROP_VOLSIZE: 1538 if ((error = nvpair_value_uint64(elem, &intval)) != 0 || 1539 (error = zvol_set_volsize(name, 1540 ddi_driver_major(zfs_dip), intval)) != 0) 1541 goto out; 1542 break; 1543 1544 case ZFS_PROP_VOLBLOCKSIZE: 1545 if ((error = nvpair_value_uint64(elem, &intval)) != 0 || 1546 (error = zvol_set_volblocksize(name, intval)) != 0) 1547 goto out; 1548 break; 1549 1550 case ZFS_PROP_VERSION: 1551 if ((error = nvpair_value_uint64(elem, &intval)) != 0 || 1552 (error = zfs_set_version(name, intval)) != 0) 1553 goto out; 1554 break; 1555 1556 default: 1557 if (nvpair_type(elem) == DATA_TYPE_STRING) { 1558 if (zfs_prop_get_type(prop) != 1559 PROP_TYPE_STRING) { 1560 error = EINVAL; 1561 goto out; 1562 } 1563 } else if (nvpair_type(elem) == DATA_TYPE_UINT64) { 1564 const char *unused; 1565 1566 VERIFY(nvpair_value_uint64(elem, &intval) == 0); 1567 1568 switch (zfs_prop_get_type(prop)) { 1569 case PROP_TYPE_NUMBER: 1570 break; 1571 case PROP_TYPE_STRING: 1572 error = EINVAL; 1573 goto out; 1574 case PROP_TYPE_INDEX: 1575 if (zfs_prop_index_to_string(prop, 1576 intval, &unused) != 0) { 1577 error = EINVAL; 1578 goto out; 1579 } 1580 break; 1581 default: 1582 cmn_err(CE_PANIC, 1583 "unknown property type"); 1584 break; 1585 } 1586 } else { 1587 error = EINVAL; 1588 goto out; 1589 } 1590 if ((error = nvlist_add_nvpair(genericnvl, elem)) != 0) 1591 goto out; 1592 } 1593 } 1594 1595 if (nvlist_next_nvpair(genericnvl, NULL) != NULL) { 1596 error = dsl_props_set(name, genericnvl); 1597 } 1598 out: 1599 nvlist_free(genericnvl); 1600 return (error); 1601 } 1602 1603 /* 1604 * inputs: 1605 * zc_name name of filesystem 1606 * zc_value name of property to set 1607 * zc_nvlist_src{_size} nvlist of properties to apply 1608 * zc_cookie clear existing local props? 1609 * 1610 * outputs: none 1611 */ 1612 static int 1613 zfs_ioc_set_prop(zfs_cmd_t *zc) 1614 { 1615 nvlist_t *nvl; 1616 int error; 1617 1618 if ((error = get_nvlist(zc->zc_nvlist_src, zc->zc_nvlist_src_size, 1619 &nvl)) != 0) 1620 return (error); 1621 1622 if (zc->zc_cookie) { 1623 nvlist_t *origprops; 1624 objset_t *os; 1625 1626 if (dmu_objset_open(zc->zc_name, DMU_OST_ANY, 1627 DS_MODE_USER | DS_MODE_READONLY, &os) == 0) { 1628 if (dsl_prop_get_all(os, &origprops, TRUE) == 0) { 1629 clear_props(zc->zc_name, origprops, nvl); 1630 nvlist_free(origprops); 1631 } 1632 dmu_objset_close(os); 1633 } 1634 1635 } 1636 1637 error = zfs_set_prop_nvlist(zc->zc_name, nvl); 1638 1639 nvlist_free(nvl); 1640 return (error); 1641 } 1642 1643 /* 1644 * inputs: 1645 * zc_name name of filesystem 1646 * zc_value name of property to inherit 1647 * 1648 * outputs: none 1649 */ 1650 static int 1651 zfs_ioc_inherit_prop(zfs_cmd_t *zc) 1652 { 1653 /* the property name has been validated by zfs_secpolicy_inherit() */ 1654 return (dsl_prop_set(zc->zc_name, zc->zc_value, 0, 0, NULL)); 1655 } 1656 1657 static int 1658 zfs_ioc_pool_set_props(zfs_cmd_t *zc) 1659 { 1660 nvlist_t *props; 1661 spa_t *spa; 1662 int error; 1663 nvpair_t *elem; 1664 1665 if ((error = get_nvlist(zc->zc_nvlist_src, zc->zc_nvlist_src_size, 1666 &props))) 1667 return (error); 1668 1669 /* 1670 * If the only property is the configfile, then just do a spa_lookup() 1671 * to handle the faulted case. 1672 */ 1673 elem = nvlist_next_nvpair(props, NULL); 1674 if (elem != NULL && strcmp(nvpair_name(elem), 1675 zpool_prop_to_name(ZPOOL_PROP_CACHEFILE)) == 0 && 1676 nvlist_next_nvpair(props, elem) == NULL) { 1677 mutex_enter(&spa_namespace_lock); 1678 if ((spa = spa_lookup(zc->zc_name)) != NULL) { 1679 spa_configfile_set(spa, props, B_FALSE); 1680 spa_config_sync(spa, B_FALSE, B_TRUE); 1681 } 1682 mutex_exit(&spa_namespace_lock); 1683 if (spa != NULL) 1684 return (0); 1685 } 1686 1687 if ((error = spa_open(zc->zc_name, &spa, FTAG)) != 0) { 1688 nvlist_free(props); 1689 return (error); 1690 } 1691 1692 error = spa_prop_set(spa, props); 1693 1694 nvlist_free(props); 1695 spa_close(spa, FTAG); 1696 1697 return (error); 1698 } 1699 1700 static int 1701 zfs_ioc_pool_get_props(zfs_cmd_t *zc) 1702 { 1703 spa_t *spa; 1704 int error; 1705 nvlist_t *nvp = NULL; 1706 1707 if ((error = spa_open(zc->zc_name, &spa, FTAG)) != 0) { 1708 /* 1709 * If the pool is faulted, there may be properties we can still 1710 * get (such as altroot and cachefile), so attempt to get them 1711 * anyway. 1712 */ 1713 mutex_enter(&spa_namespace_lock); 1714 if ((spa = spa_lookup(zc->zc_name)) != NULL) 1715 error = spa_prop_get(spa, &nvp); 1716 mutex_exit(&spa_namespace_lock); 1717 } else { 1718 error = spa_prop_get(spa, &nvp); 1719 spa_close(spa, FTAG); 1720 } 1721 1722 if (error == 0 && zc->zc_nvlist_dst != NULL) 1723 error = put_nvlist(zc, nvp); 1724 else 1725 error = EFAULT; 1726 1727 nvlist_free(nvp); 1728 return (error); 1729 } 1730 1731 static int 1732 zfs_ioc_iscsi_perm_check(zfs_cmd_t *zc) 1733 { 1734 nvlist_t *nvp; 1735 int error; 1736 uint32_t uid; 1737 uint32_t gid; 1738 uint32_t *groups; 1739 uint_t group_cnt; 1740 cred_t *usercred; 1741 1742 if ((error = get_nvlist(zc->zc_nvlist_src, zc->zc_nvlist_src_size, 1743 &nvp)) != 0) { 1744 return (error); 1745 } 1746 1747 if ((error = nvlist_lookup_uint32(nvp, 1748 ZFS_DELEG_PERM_UID, &uid)) != 0) { 1749 nvlist_free(nvp); 1750 return (EPERM); 1751 } 1752 1753 if ((error = nvlist_lookup_uint32(nvp, 1754 ZFS_DELEG_PERM_GID, &gid)) != 0) { 1755 nvlist_free(nvp); 1756 return (EPERM); 1757 } 1758 1759 if ((error = nvlist_lookup_uint32_array(nvp, ZFS_DELEG_PERM_GROUPS, 1760 &groups, &group_cnt)) != 0) { 1761 nvlist_free(nvp); 1762 return (EPERM); 1763 } 1764 usercred = cralloc(); 1765 if ((crsetugid(usercred, uid, gid) != 0) || 1766 (crsetgroups(usercred, group_cnt, (gid_t *)groups) != 0)) { 1767 nvlist_free(nvp); 1768 crfree(usercred); 1769 return (EPERM); 1770 } 1771 nvlist_free(nvp); 1772 error = dsl_deleg_access(zc->zc_name, 1773 zfs_prop_to_name(ZFS_PROP_SHAREISCSI), usercred); 1774 crfree(usercred); 1775 return (error); 1776 } 1777 1778 /* 1779 * inputs: 1780 * zc_name name of filesystem 1781 * zc_nvlist_src{_size} nvlist of delegated permissions 1782 * zc_perm_action allow/unallow flag 1783 * 1784 * outputs: none 1785 */ 1786 static int 1787 zfs_ioc_set_fsacl(zfs_cmd_t *zc) 1788 { 1789 int error; 1790 nvlist_t *fsaclnv = NULL; 1791 1792 if ((error = get_nvlist(zc->zc_nvlist_src, zc->zc_nvlist_src_size, 1793 &fsaclnv)) != 0) 1794 return (error); 1795 1796 /* 1797 * Verify nvlist is constructed correctly 1798 */ 1799 if ((error = zfs_deleg_verify_nvlist(fsaclnv)) != 0) { 1800 nvlist_free(fsaclnv); 1801 return (EINVAL); 1802 } 1803 1804 /* 1805 * If we don't have PRIV_SYS_MOUNT, then validate 1806 * that user is allowed to hand out each permission in 1807 * the nvlist(s) 1808 */ 1809 1810 error = secpolicy_zfs(CRED()); 1811 if (error) { 1812 if (zc->zc_perm_action == B_FALSE) { 1813 error = dsl_deleg_can_allow(zc->zc_name, 1814 fsaclnv, CRED()); 1815 } else { 1816 error = dsl_deleg_can_unallow(zc->zc_name, 1817 fsaclnv, CRED()); 1818 } 1819 } 1820 1821 if (error == 0) 1822 error = dsl_deleg_set(zc->zc_name, fsaclnv, zc->zc_perm_action); 1823 1824 nvlist_free(fsaclnv); 1825 return (error); 1826 } 1827 1828 /* 1829 * inputs: 1830 * zc_name name of filesystem 1831 * 1832 * outputs: 1833 * zc_nvlist_src{_size} nvlist of delegated permissions 1834 */ 1835 static int 1836 zfs_ioc_get_fsacl(zfs_cmd_t *zc) 1837 { 1838 nvlist_t *nvp; 1839 int error; 1840 1841 if ((error = dsl_deleg_get(zc->zc_name, &nvp)) == 0) { 1842 error = put_nvlist(zc, nvp); 1843 nvlist_free(nvp); 1844 } 1845 1846 return (error); 1847 } 1848 1849 /* 1850 * inputs: 1851 * zc_name name of volume 1852 * 1853 * outputs: none 1854 */ 1855 static int 1856 zfs_ioc_create_minor(zfs_cmd_t *zc) 1857 { 1858 return (zvol_create_minor(zc->zc_name, ddi_driver_major(zfs_dip))); 1859 } 1860 1861 /* 1862 * inputs: 1863 * zc_name name of volume 1864 * 1865 * outputs: none 1866 */ 1867 static int 1868 zfs_ioc_remove_minor(zfs_cmd_t *zc) 1869 { 1870 return (zvol_remove_minor(zc->zc_name)); 1871 } 1872 1873 /* 1874 * Search the vfs list for a specified resource. Returns a pointer to it 1875 * or NULL if no suitable entry is found. The caller of this routine 1876 * is responsible for releasing the returned vfs pointer. 1877 */ 1878 static vfs_t * 1879 zfs_get_vfs(const char *resource) 1880 { 1881 struct vfs *vfsp; 1882 struct vfs *vfs_found = NULL; 1883 1884 vfs_list_read_lock(); 1885 vfsp = rootvfs; 1886 do { 1887 if (strcmp(refstr_value(vfsp->vfs_resource), resource) == 0) { 1888 VFS_HOLD(vfsp); 1889 vfs_found = vfsp; 1890 break; 1891 } 1892 vfsp = vfsp->vfs_next; 1893 } while (vfsp != rootvfs); 1894 vfs_list_unlock(); 1895 return (vfs_found); 1896 } 1897 1898 /* ARGSUSED */ 1899 static void 1900 zfs_create_cb(objset_t *os, void *arg, cred_t *cr, dmu_tx_t *tx) 1901 { 1902 zfs_creat_t *zct = arg; 1903 1904 zfs_create_fs(os, cr, zct->zct_zplprops, tx); 1905 } 1906 1907 #define ZFS_PROP_UNDEFINED ((uint64_t)-1) 1908 1909 /* 1910 * inputs: 1911 * createprops list of properties requested by creator 1912 * default_zplver zpl version to use if unspecified in createprops 1913 * fuids_ok fuids allowed in this version of the spa? 1914 * os parent objset pointer (NULL if root fs) 1915 * 1916 * outputs: 1917 * zplprops values for the zplprops we attach to the master node object 1918 * is_ci true if requested file system will be purely case-insensitive 1919 * 1920 * Determine the settings for utf8only, normalization and 1921 * casesensitivity. Specific values may have been requested by the 1922 * creator and/or we can inherit values from the parent dataset. If 1923 * the file system is of too early a vintage, a creator can not 1924 * request settings for these properties, even if the requested 1925 * setting is the default value. We don't actually want to create dsl 1926 * properties for these, so remove them from the source nvlist after 1927 * processing. 1928 */ 1929 static int 1930 zfs_fill_zplprops_impl(objset_t *os, uint64_t default_zplver, 1931 boolean_t fuids_ok, nvlist_t *createprops, nvlist_t *zplprops, 1932 boolean_t *is_ci) 1933 { 1934 uint64_t zplver = default_zplver; 1935 uint64_t sense = ZFS_PROP_UNDEFINED; 1936 uint64_t norm = ZFS_PROP_UNDEFINED; 1937 uint64_t u8 = ZFS_PROP_UNDEFINED; 1938 1939 ASSERT(zplprops != NULL); 1940 1941 /* 1942 * Pull out creator prop choices, if any. 1943 */ 1944 if (createprops) { 1945 (void) nvlist_lookup_uint64(createprops, 1946 zfs_prop_to_name(ZFS_PROP_VERSION), &zplver); 1947 (void) nvlist_lookup_uint64(createprops, 1948 zfs_prop_to_name(ZFS_PROP_NORMALIZE), &norm); 1949 (void) nvlist_remove_all(createprops, 1950 zfs_prop_to_name(ZFS_PROP_NORMALIZE)); 1951 (void) nvlist_lookup_uint64(createprops, 1952 zfs_prop_to_name(ZFS_PROP_UTF8ONLY), &u8); 1953 (void) nvlist_remove_all(createprops, 1954 zfs_prop_to_name(ZFS_PROP_UTF8ONLY)); 1955 (void) nvlist_lookup_uint64(createprops, 1956 zfs_prop_to_name(ZFS_PROP_CASE), &sense); 1957 (void) nvlist_remove_all(createprops, 1958 zfs_prop_to_name(ZFS_PROP_CASE)); 1959 } 1960 1961 /* 1962 * If the zpl version requested is whacky or the file system 1963 * or pool is version is too "young" to support normalization 1964 * and the creator tried to set a value for one of the props, 1965 * error out. 1966 */ 1967 if ((zplver < ZPL_VERSION_INITIAL || zplver > ZPL_VERSION) || 1968 (zplver >= ZPL_VERSION_FUID && !fuids_ok) || 1969 (zplver < ZPL_VERSION_NORMALIZATION && 1970 (norm != ZFS_PROP_UNDEFINED || u8 != ZFS_PROP_UNDEFINED || 1971 sense != ZFS_PROP_UNDEFINED))) 1972 return (ENOTSUP); 1973 1974 /* 1975 * Put the version in the zplprops 1976 */ 1977 VERIFY(nvlist_add_uint64(zplprops, 1978 zfs_prop_to_name(ZFS_PROP_VERSION), zplver) == 0); 1979 1980 if (norm == ZFS_PROP_UNDEFINED) 1981 VERIFY(zfs_get_zplprop(os, ZFS_PROP_NORMALIZE, &norm) == 0); 1982 VERIFY(nvlist_add_uint64(zplprops, 1983 zfs_prop_to_name(ZFS_PROP_NORMALIZE), norm) == 0); 1984 1985 /* 1986 * If we're normalizing, names must always be valid UTF-8 strings. 1987 */ 1988 if (norm) 1989 u8 = 1; 1990 if (u8 == ZFS_PROP_UNDEFINED) 1991 VERIFY(zfs_get_zplprop(os, ZFS_PROP_UTF8ONLY, &u8) == 0); 1992 VERIFY(nvlist_add_uint64(zplprops, 1993 zfs_prop_to_name(ZFS_PROP_UTF8ONLY), u8) == 0); 1994 1995 if (sense == ZFS_PROP_UNDEFINED) 1996 VERIFY(zfs_get_zplprop(os, ZFS_PROP_CASE, &sense) == 0); 1997 VERIFY(nvlist_add_uint64(zplprops, 1998 zfs_prop_to_name(ZFS_PROP_CASE), sense) == 0); 1999 2000 if (is_ci) 2001 *is_ci = (sense == ZFS_CASE_INSENSITIVE); 2002 2003 return (0); 2004 } 2005 2006 static int 2007 zfs_fill_zplprops(const char *dataset, nvlist_t *createprops, 2008 nvlist_t *zplprops, boolean_t *is_ci) 2009 { 2010 boolean_t fuids_ok = B_TRUE; 2011 uint64_t zplver = ZPL_VERSION; 2012 objset_t *os = NULL; 2013 char parentname[MAXNAMELEN]; 2014 char *cp; 2015 int error; 2016 2017 (void) strlcpy(parentname, dataset, sizeof (parentname)); 2018 cp = strrchr(parentname, '/'); 2019 ASSERT(cp != NULL); 2020 cp[0] = '\0'; 2021 2022 if (zfs_earlier_version(dataset, SPA_VERSION_FUID)) { 2023 zplver = ZPL_VERSION_FUID - 1; 2024 fuids_ok = B_FALSE; 2025 } 2026 2027 /* 2028 * Open parent object set so we can inherit zplprop values. 2029 */ 2030 if ((error = dmu_objset_open(parentname, DMU_OST_ANY, 2031 DS_MODE_USER | DS_MODE_READONLY, &os)) != 0) 2032 return (error); 2033 2034 error = zfs_fill_zplprops_impl(os, zplver, fuids_ok, createprops, 2035 zplprops, is_ci); 2036 dmu_objset_close(os); 2037 return (error); 2038 } 2039 2040 static int 2041 zfs_fill_zplprops_root(uint64_t spa_vers, nvlist_t *createprops, 2042 nvlist_t *zplprops, boolean_t *is_ci) 2043 { 2044 boolean_t fuids_ok = B_TRUE; 2045 uint64_t zplver = ZPL_VERSION; 2046 int error; 2047 2048 if (spa_vers < SPA_VERSION_FUID) { 2049 zplver = ZPL_VERSION_FUID - 1; 2050 fuids_ok = B_FALSE; 2051 } 2052 2053 error = zfs_fill_zplprops_impl(NULL, zplver, fuids_ok, createprops, 2054 zplprops, is_ci); 2055 return (error); 2056 } 2057 2058 /* 2059 * inputs: 2060 * zc_objset_type type of objset to create (fs vs zvol) 2061 * zc_name name of new objset 2062 * zc_value name of snapshot to clone from (may be empty) 2063 * zc_nvlist_src{_size} nvlist of properties to apply 2064 * 2065 * outputs: none 2066 */ 2067 static int 2068 zfs_ioc_create(zfs_cmd_t *zc) 2069 { 2070 objset_t *clone; 2071 int error = 0; 2072 zfs_creat_t zct; 2073 nvlist_t *nvprops = NULL; 2074 void (*cbfunc)(objset_t *os, void *arg, cred_t *cr, dmu_tx_t *tx); 2075 dmu_objset_type_t type = zc->zc_objset_type; 2076 2077 switch (type) { 2078 2079 case DMU_OST_ZFS: 2080 cbfunc = zfs_create_cb; 2081 break; 2082 2083 case DMU_OST_ZVOL: 2084 cbfunc = zvol_create_cb; 2085 break; 2086 2087 default: 2088 cbfunc = NULL; 2089 break; 2090 } 2091 if (strchr(zc->zc_name, '@') || 2092 strchr(zc->zc_name, '%')) 2093 return (EINVAL); 2094 2095 if (zc->zc_nvlist_src != NULL && 2096 (error = get_nvlist(zc->zc_nvlist_src, zc->zc_nvlist_src_size, 2097 &nvprops)) != 0) 2098 return (error); 2099 2100 zct.zct_zplprops = NULL; 2101 zct.zct_props = nvprops; 2102 2103 if (zc->zc_value[0] != '\0') { 2104 /* 2105 * We're creating a clone of an existing snapshot. 2106 */ 2107 zc->zc_value[sizeof (zc->zc_value) - 1] = '\0'; 2108 if (dataset_namecheck(zc->zc_value, NULL, NULL) != 0) { 2109 nvlist_free(nvprops); 2110 return (EINVAL); 2111 } 2112 2113 error = dmu_objset_open(zc->zc_value, type, 2114 DS_MODE_USER | DS_MODE_READONLY, &clone); 2115 if (error) { 2116 nvlist_free(nvprops); 2117 return (error); 2118 } 2119 2120 error = dmu_objset_create(zc->zc_name, type, clone, 0, 2121 NULL, NULL); 2122 if (error) { 2123 dmu_objset_close(clone); 2124 nvlist_free(nvprops); 2125 return (error); 2126 } 2127 dmu_objset_close(clone); 2128 } else { 2129 boolean_t is_insensitive = B_FALSE; 2130 2131 if (cbfunc == NULL) { 2132 nvlist_free(nvprops); 2133 return (EINVAL); 2134 } 2135 2136 if (type == DMU_OST_ZVOL) { 2137 uint64_t volsize, volblocksize; 2138 2139 if (nvprops == NULL || 2140 nvlist_lookup_uint64(nvprops, 2141 zfs_prop_to_name(ZFS_PROP_VOLSIZE), 2142 &volsize) != 0) { 2143 nvlist_free(nvprops); 2144 return (EINVAL); 2145 } 2146 2147 if ((error = nvlist_lookup_uint64(nvprops, 2148 zfs_prop_to_name(ZFS_PROP_VOLBLOCKSIZE), 2149 &volblocksize)) != 0 && error != ENOENT) { 2150 nvlist_free(nvprops); 2151 return (EINVAL); 2152 } 2153 2154 if (error != 0) 2155 volblocksize = zfs_prop_default_numeric( 2156 ZFS_PROP_VOLBLOCKSIZE); 2157 2158 if ((error = zvol_check_volblocksize( 2159 volblocksize)) != 0 || 2160 (error = zvol_check_volsize(volsize, 2161 volblocksize)) != 0) { 2162 nvlist_free(nvprops); 2163 return (error); 2164 } 2165 } else if (type == DMU_OST_ZFS) { 2166 int error; 2167 2168 /* 2169 * We have to have normalization and 2170 * case-folding flags correct when we do the 2171 * file system creation, so go figure them out 2172 * now. 2173 */ 2174 VERIFY(nvlist_alloc(&zct.zct_zplprops, 2175 NV_UNIQUE_NAME, KM_SLEEP) == 0); 2176 error = zfs_fill_zplprops(zc->zc_name, nvprops, 2177 zct.zct_zplprops, &is_insensitive); 2178 if (error != 0) { 2179 nvlist_free(nvprops); 2180 nvlist_free(zct.zct_zplprops); 2181 return (error); 2182 } 2183 } 2184 error = dmu_objset_create(zc->zc_name, type, NULL, 2185 is_insensitive ? DS_FLAG_CI_DATASET : 0, cbfunc, &zct); 2186 nvlist_free(zct.zct_zplprops); 2187 } 2188 2189 /* 2190 * It would be nice to do this atomically. 2191 */ 2192 if (error == 0) { 2193 if ((error = zfs_set_prop_nvlist(zc->zc_name, nvprops)) != 0) 2194 (void) dmu_objset_destroy(zc->zc_name); 2195 } 2196 nvlist_free(nvprops); 2197 return (error); 2198 } 2199 2200 struct snap_prop_arg { 2201 nvlist_t *nvprops; 2202 const char *snapname; 2203 }; 2204 2205 static int 2206 set_snap_props(char *name, void *arg) 2207 { 2208 struct snap_prop_arg *snpa = arg; 2209 int len = strlen(name) + strlen(snpa->snapname) + 2; 2210 char *buf = kmem_alloc(len, KM_SLEEP); 2211 int err; 2212 2213 (void) snprintf(buf, len, "%s@%s", name, snpa->snapname); 2214 err = zfs_set_prop_nvlist(buf, snpa->nvprops); 2215 if (err) 2216 (void) dmu_objset_destroy(buf); 2217 kmem_free(buf, len); 2218 return (err); 2219 } 2220 2221 /* 2222 * inputs: 2223 * zc_name name of filesystem 2224 * zc_value short name of snapshot 2225 * zc_cookie recursive flag 2226 * 2227 * outputs: none 2228 */ 2229 static int 2230 zfs_ioc_snapshot(zfs_cmd_t *zc) 2231 { 2232 nvlist_t *nvprops = NULL; 2233 int error; 2234 boolean_t recursive = zc->zc_cookie; 2235 2236 if (snapshot_namecheck(zc->zc_value, NULL, NULL) != 0) 2237 return (EINVAL); 2238 2239 if (zc->zc_nvlist_src != NULL && 2240 (error = get_nvlist(zc->zc_nvlist_src, zc->zc_nvlist_src_size, 2241 &nvprops)) != 0) 2242 return (error); 2243 2244 error = dmu_objset_snapshot(zc->zc_name, zc->zc_value, recursive); 2245 2246 /* 2247 * It would be nice to do this atomically. 2248 */ 2249 if (error == 0) { 2250 struct snap_prop_arg snpa; 2251 snpa.nvprops = nvprops; 2252 snpa.snapname = zc->zc_value; 2253 if (recursive) { 2254 error = dmu_objset_find(zc->zc_name, 2255 set_snap_props, &snpa, DS_FIND_CHILDREN); 2256 if (error) { 2257 (void) dmu_snapshots_destroy(zc->zc_name, 2258 zc->zc_value); 2259 } 2260 } else { 2261 error = set_snap_props(zc->zc_name, &snpa); 2262 } 2263 } 2264 nvlist_free(nvprops); 2265 return (error); 2266 } 2267 2268 int 2269 zfs_unmount_snap(char *name, void *arg) 2270 { 2271 vfs_t *vfsp = NULL; 2272 2273 if (arg) { 2274 char *snapname = arg; 2275 int len = strlen(name) + strlen(snapname) + 2; 2276 char *buf = kmem_alloc(len, KM_SLEEP); 2277 2278 (void) strcpy(buf, name); 2279 (void) strcat(buf, "@"); 2280 (void) strcat(buf, snapname); 2281 vfsp = zfs_get_vfs(buf); 2282 kmem_free(buf, len); 2283 } else if (strchr(name, '@')) { 2284 vfsp = zfs_get_vfs(name); 2285 } 2286 2287 if (vfsp) { 2288 /* 2289 * Always force the unmount for snapshots. 2290 */ 2291 int flag = MS_FORCE; 2292 int err; 2293 2294 if ((err = vn_vfswlock(vfsp->vfs_vnodecovered)) != 0) { 2295 VFS_RELE(vfsp); 2296 return (err); 2297 } 2298 VFS_RELE(vfsp); 2299 if ((err = dounmount(vfsp, flag, kcred)) != 0) 2300 return (err); 2301 } 2302 return (0); 2303 } 2304 2305 /* 2306 * inputs: 2307 * zc_name name of filesystem 2308 * zc_value short name of snapshot 2309 * 2310 * outputs: none 2311 */ 2312 static int 2313 zfs_ioc_destroy_snaps(zfs_cmd_t *zc) 2314 { 2315 int err; 2316 2317 if (snapshot_namecheck(zc->zc_value, NULL, NULL) != 0) 2318 return (EINVAL); 2319 err = dmu_objset_find(zc->zc_name, 2320 zfs_unmount_snap, zc->zc_value, DS_FIND_CHILDREN); 2321 if (err) 2322 return (err); 2323 return (dmu_snapshots_destroy(zc->zc_name, zc->zc_value)); 2324 } 2325 2326 /* 2327 * inputs: 2328 * zc_name name of dataset to destroy 2329 * zc_objset_type type of objset 2330 * 2331 * outputs: none 2332 */ 2333 static int 2334 zfs_ioc_destroy(zfs_cmd_t *zc) 2335 { 2336 if (strchr(zc->zc_name, '@') && zc->zc_objset_type == DMU_OST_ZFS) { 2337 int err = zfs_unmount_snap(zc->zc_name, NULL); 2338 if (err) 2339 return (err); 2340 } 2341 2342 return (dmu_objset_destroy(zc->zc_name)); 2343 } 2344 2345 /* 2346 * inputs: 2347 * zc_name name of dataset to rollback (to most recent snapshot) 2348 * 2349 * outputs: none 2350 */ 2351 static int 2352 zfs_ioc_rollback(zfs_cmd_t *zc) 2353 { 2354 objset_t *os; 2355 int error; 2356 zfsvfs_t *zfsvfs = NULL; 2357 2358 /* 2359 * Get the zfsvfs for the receiving objset. There 2360 * won't be one if we're operating on a zvol, if the 2361 * objset doesn't exist yet, or is not mounted. 2362 */ 2363 error = dmu_objset_open(zc->zc_name, DMU_OST_ANY, DS_MODE_USER, &os); 2364 if (error) 2365 return (error); 2366 2367 if (dmu_objset_type(os) == DMU_OST_ZFS) { 2368 mutex_enter(&os->os->os_user_ptr_lock); 2369 zfsvfs = dmu_objset_get_user(os); 2370 if (zfsvfs != NULL) 2371 VFS_HOLD(zfsvfs->z_vfs); 2372 mutex_exit(&os->os->os_user_ptr_lock); 2373 } 2374 2375 if (zfsvfs != NULL) { 2376 char *osname; 2377 int mode; 2378 2379 osname = kmem_alloc(MAXNAMELEN, KM_SLEEP); 2380 error = zfs_suspend_fs(zfsvfs, osname, &mode); 2381 if (error == 0) { 2382 int resume_err; 2383 2384 ASSERT(strcmp(osname, zc->zc_name) == 0); 2385 error = dmu_objset_rollback(os); 2386 resume_err = zfs_resume_fs(zfsvfs, osname, mode); 2387 error = error ? error : resume_err; 2388 } else { 2389 dmu_objset_close(os); 2390 } 2391 kmem_free(osname, MAXNAMELEN); 2392 VFS_RELE(zfsvfs->z_vfs); 2393 } else { 2394 error = dmu_objset_rollback(os); 2395 } 2396 /* Note, the dmu_objset_rollback() releases the objset for us. */ 2397 2398 return (error); 2399 } 2400 2401 /* 2402 * inputs: 2403 * zc_name old name of dataset 2404 * zc_value new name of dataset 2405 * zc_cookie recursive flag (only valid for snapshots) 2406 * 2407 * outputs: none 2408 */ 2409 static int 2410 zfs_ioc_rename(zfs_cmd_t *zc) 2411 { 2412 boolean_t recursive = zc->zc_cookie & 1; 2413 2414 zc->zc_value[sizeof (zc->zc_value) - 1] = '\0'; 2415 if (dataset_namecheck(zc->zc_value, NULL, NULL) != 0 || 2416 strchr(zc->zc_value, '%')) 2417 return (EINVAL); 2418 2419 /* 2420 * Unmount snapshot unless we're doing a recursive rename, 2421 * in which case the dataset code figures out which snapshots 2422 * to unmount. 2423 */ 2424 if (!recursive && strchr(zc->zc_name, '@') != NULL && 2425 zc->zc_objset_type == DMU_OST_ZFS) { 2426 int err = zfs_unmount_snap(zc->zc_name, NULL); 2427 if (err) 2428 return (err); 2429 } 2430 return (dmu_objset_rename(zc->zc_name, zc->zc_value, recursive)); 2431 } 2432 2433 static void 2434 clear_props(char *dataset, nvlist_t *props, nvlist_t *newprops) 2435 { 2436 zfs_cmd_t *zc; 2437 nvpair_t *prop; 2438 2439 if (props == NULL) 2440 return; 2441 zc = kmem_alloc(sizeof (zfs_cmd_t), KM_SLEEP); 2442 (void) strcpy(zc->zc_name, dataset); 2443 for (prop = nvlist_next_nvpair(props, NULL); prop; 2444 prop = nvlist_next_nvpair(props, prop)) { 2445 if (newprops != NULL && 2446 nvlist_exists(newprops, nvpair_name(prop))) 2447 continue; 2448 (void) strcpy(zc->zc_value, nvpair_name(prop)); 2449 if (zfs_secpolicy_inherit(zc, CRED()) == 0) 2450 (void) zfs_ioc_inherit_prop(zc); 2451 } 2452 kmem_free(zc, sizeof (zfs_cmd_t)); 2453 } 2454 2455 /* 2456 * inputs: 2457 * zc_name name of containing filesystem 2458 * zc_nvlist_src{_size} nvlist of properties to apply 2459 * zc_value name of snapshot to create 2460 * zc_string name of clone origin (if DRR_FLAG_CLONE) 2461 * zc_cookie file descriptor to recv from 2462 * zc_begin_record the BEGIN record of the stream (not byteswapped) 2463 * zc_guid force flag 2464 * 2465 * outputs: 2466 * zc_cookie number of bytes read 2467 */ 2468 static int 2469 zfs_ioc_recv(zfs_cmd_t *zc) 2470 { 2471 file_t *fp; 2472 objset_t *os; 2473 dmu_recv_cookie_t drc; 2474 zfsvfs_t *zfsvfs = NULL; 2475 boolean_t force = (boolean_t)zc->zc_guid; 2476 int error, fd; 2477 offset_t off; 2478 nvlist_t *props = NULL; 2479 nvlist_t *origprops = NULL; 2480 objset_t *origin = NULL; 2481 char *tosnap; 2482 char tofs[ZFS_MAXNAMELEN]; 2483 2484 if (dataset_namecheck(zc->zc_value, NULL, NULL) != 0 || 2485 strchr(zc->zc_value, '@') == NULL || 2486 strchr(zc->zc_value, '%')) 2487 return (EINVAL); 2488 2489 (void) strcpy(tofs, zc->zc_value); 2490 tosnap = strchr(tofs, '@'); 2491 *tosnap = '\0'; 2492 tosnap++; 2493 2494 if (zc->zc_nvlist_src != NULL && 2495 (error = get_nvlist(zc->zc_nvlist_src, zc->zc_nvlist_src_size, 2496 &props)) != 0) 2497 return (error); 2498 2499 fd = zc->zc_cookie; 2500 fp = getf(fd); 2501 if (fp == NULL) { 2502 nvlist_free(props); 2503 return (EBADF); 2504 } 2505 2506 if (dmu_objset_open(tofs, DMU_OST_ANY, 2507 DS_MODE_USER | DS_MODE_READONLY, &os) == 0) { 2508 /* 2509 * Try to get the zfsvfs for the receiving objset. 2510 * There won't be one if we're operating on a zvol, 2511 * if the objset doesn't exist yet, or is not mounted. 2512 */ 2513 mutex_enter(&os->os->os_user_ptr_lock); 2514 if (zfsvfs = dmu_objset_get_user(os)) { 2515 if (!mutex_tryenter(&zfsvfs->z_online_recv_lock)) { 2516 mutex_exit(&os->os->os_user_ptr_lock); 2517 dmu_objset_close(os); 2518 zfsvfs = NULL; 2519 error = EBUSY; 2520 goto out; 2521 } 2522 VFS_HOLD(zfsvfs->z_vfs); 2523 } 2524 mutex_exit(&os->os->os_user_ptr_lock); 2525 2526 /* 2527 * If new properties are supplied, they are to completely 2528 * replace the existing ones, so stash away the existing ones. 2529 */ 2530 if (props) 2531 (void) dsl_prop_get_all(os, &origprops, TRUE); 2532 2533 dmu_objset_close(os); 2534 } 2535 2536 if (zc->zc_string[0]) { 2537 error = dmu_objset_open(zc->zc_string, DMU_OST_ANY, 2538 DS_MODE_USER | DS_MODE_READONLY, &origin); 2539 if (error) 2540 goto out; 2541 } 2542 2543 error = dmu_recv_begin(tofs, tosnap, &zc->zc_begin_record, 2544 force, origin, zfsvfs != NULL, &drc); 2545 if (origin) 2546 dmu_objset_close(origin); 2547 if (error) 2548 goto out; 2549 2550 /* 2551 * Reset properties. We do this before we receive the stream 2552 * so that the properties are applied to the new data. 2553 */ 2554 if (props) { 2555 clear_props(tofs, origprops, props); 2556 /* 2557 * XXX - Note, this is all-or-nothing; should be best-effort. 2558 */ 2559 (void) zfs_set_prop_nvlist(tofs, props); 2560 } 2561 2562 off = fp->f_offset; 2563 error = dmu_recv_stream(&drc, fp->f_vnode, &off); 2564 2565 if (error == 0 && zfsvfs) { 2566 char *osname; 2567 int mode; 2568 2569 /* online recv */ 2570 osname = kmem_alloc(MAXNAMELEN, KM_SLEEP); 2571 error = zfs_suspend_fs(zfsvfs, osname, &mode); 2572 if (error == 0) { 2573 int resume_err; 2574 2575 error = dmu_recv_end(&drc); 2576 resume_err = zfs_resume_fs(zfsvfs, osname, mode); 2577 error = error ? error : resume_err; 2578 } else { 2579 dmu_recv_abort_cleanup(&drc); 2580 } 2581 kmem_free(osname, MAXNAMELEN); 2582 } else if (error == 0) { 2583 error = dmu_recv_end(&drc); 2584 } 2585 2586 zc->zc_cookie = off - fp->f_offset; 2587 if (VOP_SEEK(fp->f_vnode, fp->f_offset, &off, NULL) == 0) 2588 fp->f_offset = off; 2589 2590 /* 2591 * On error, restore the original props. 2592 */ 2593 if (error && props) { 2594 clear_props(tofs, props, NULL); 2595 (void) zfs_set_prop_nvlist(tofs, origprops); 2596 } 2597 out: 2598 if (zfsvfs) { 2599 mutex_exit(&zfsvfs->z_online_recv_lock); 2600 VFS_RELE(zfsvfs->z_vfs); 2601 } 2602 nvlist_free(props); 2603 nvlist_free(origprops); 2604 releasef(fd); 2605 return (error); 2606 } 2607 2608 /* 2609 * inputs: 2610 * zc_name name of snapshot to send 2611 * zc_value short name of incremental fromsnap (may be empty) 2612 * zc_cookie file descriptor to send stream to 2613 * zc_obj fromorigin flag (mutually exclusive with zc_value) 2614 * 2615 * outputs: none 2616 */ 2617 static int 2618 zfs_ioc_send(zfs_cmd_t *zc) 2619 { 2620 objset_t *fromsnap = NULL; 2621 objset_t *tosnap; 2622 file_t *fp; 2623 int error; 2624 offset_t off; 2625 2626 error = dmu_objset_open(zc->zc_name, DMU_OST_ANY, 2627 DS_MODE_USER | DS_MODE_READONLY, &tosnap); 2628 if (error) 2629 return (error); 2630 2631 if (zc->zc_value[0] != '\0') { 2632 char *buf; 2633 char *cp; 2634 2635 buf = kmem_alloc(MAXPATHLEN, KM_SLEEP); 2636 (void) strncpy(buf, zc->zc_name, MAXPATHLEN); 2637 cp = strchr(buf, '@'); 2638 if (cp) 2639 *(cp+1) = 0; 2640 (void) strncat(buf, zc->zc_value, MAXPATHLEN); 2641 error = dmu_objset_open(buf, DMU_OST_ANY, 2642 DS_MODE_USER | DS_MODE_READONLY, &fromsnap); 2643 kmem_free(buf, MAXPATHLEN); 2644 if (error) { 2645 dmu_objset_close(tosnap); 2646 return (error); 2647 } 2648 } 2649 2650 fp = getf(zc->zc_cookie); 2651 if (fp == NULL) { 2652 dmu_objset_close(tosnap); 2653 if (fromsnap) 2654 dmu_objset_close(fromsnap); 2655 return (EBADF); 2656 } 2657 2658 off = fp->f_offset; 2659 error = dmu_sendbackup(tosnap, fromsnap, zc->zc_obj, fp->f_vnode, &off); 2660 2661 if (VOP_SEEK(fp->f_vnode, fp->f_offset, &off, NULL) == 0) 2662 fp->f_offset = off; 2663 releasef(zc->zc_cookie); 2664 if (fromsnap) 2665 dmu_objset_close(fromsnap); 2666 dmu_objset_close(tosnap); 2667 return (error); 2668 } 2669 2670 static int 2671 zfs_ioc_inject_fault(zfs_cmd_t *zc) 2672 { 2673 int id, error; 2674 2675 error = zio_inject_fault(zc->zc_name, (int)zc->zc_guid, &id, 2676 &zc->zc_inject_record); 2677 2678 if (error == 0) 2679 zc->zc_guid = (uint64_t)id; 2680 2681 return (error); 2682 } 2683 2684 static int 2685 zfs_ioc_clear_fault(zfs_cmd_t *zc) 2686 { 2687 return (zio_clear_fault((int)zc->zc_guid)); 2688 } 2689 2690 static int 2691 zfs_ioc_inject_list_next(zfs_cmd_t *zc) 2692 { 2693 int id = (int)zc->zc_guid; 2694 int error; 2695 2696 error = zio_inject_list_next(&id, zc->zc_name, sizeof (zc->zc_name), 2697 &zc->zc_inject_record); 2698 2699 zc->zc_guid = id; 2700 2701 return (error); 2702 } 2703 2704 static int 2705 zfs_ioc_error_log(zfs_cmd_t *zc) 2706 { 2707 spa_t *spa; 2708 int error; 2709 size_t count = (size_t)zc->zc_nvlist_dst_size; 2710 2711 if ((error = spa_open(zc->zc_name, &spa, FTAG)) != 0) 2712 return (error); 2713 2714 error = spa_get_errlog(spa, (void *)(uintptr_t)zc->zc_nvlist_dst, 2715 &count); 2716 if (error == 0) 2717 zc->zc_nvlist_dst_size = count; 2718 else 2719 zc->zc_nvlist_dst_size = spa_get_errlog_size(spa); 2720 2721 spa_close(spa, FTAG); 2722 2723 return (error); 2724 } 2725 2726 static int 2727 zfs_ioc_clear(zfs_cmd_t *zc) 2728 { 2729 spa_t *spa; 2730 vdev_t *vd; 2731 int error; 2732 2733 /* 2734 * On zpool clear we also fix up missing slogs 2735 */ 2736 mutex_enter(&spa_namespace_lock); 2737 spa = spa_lookup(zc->zc_name); 2738 if (spa == NULL) { 2739 mutex_exit(&spa_namespace_lock); 2740 return (EIO); 2741 } 2742 if (spa->spa_log_state == SPA_LOG_MISSING) { 2743 /* we need to let spa_open/spa_load clear the chains */ 2744 spa->spa_log_state = SPA_LOG_CLEAR; 2745 } 2746 mutex_exit(&spa_namespace_lock); 2747 2748 if ((error = spa_open(zc->zc_name, &spa, FTAG)) != 0) 2749 return (error); 2750 2751 spa_vdev_state_enter(spa); 2752 2753 if (zc->zc_guid == 0) { 2754 vd = NULL; 2755 } else { 2756 vd = spa_lookup_by_guid(spa, zc->zc_guid, B_TRUE); 2757 if (vd == NULL) { 2758 (void) spa_vdev_state_exit(spa, NULL, ENODEV); 2759 spa_close(spa, FTAG); 2760 return (ENODEV); 2761 } 2762 } 2763 2764 vdev_clear(spa, vd); 2765 2766 (void) spa_vdev_state_exit(spa, NULL, 0); 2767 2768 /* 2769 * Resume any suspended I/Os. 2770 */ 2771 zio_resume(spa); 2772 2773 spa_close(spa, FTAG); 2774 2775 return (0); 2776 } 2777 2778 /* 2779 * inputs: 2780 * zc_name name of filesystem 2781 * zc_value name of origin snapshot 2782 * 2783 * outputs: none 2784 */ 2785 static int 2786 zfs_ioc_promote(zfs_cmd_t *zc) 2787 { 2788 char *cp; 2789 2790 /* 2791 * We don't need to unmount *all* the origin fs's snapshots, but 2792 * it's easier. 2793 */ 2794 cp = strchr(zc->zc_value, '@'); 2795 if (cp) 2796 *cp = '\0'; 2797 (void) dmu_objset_find(zc->zc_value, 2798 zfs_unmount_snap, NULL, DS_FIND_SNAPSHOTS); 2799 return (dsl_dataset_promote(zc->zc_name)); 2800 } 2801 2802 /* 2803 * We don't want to have a hard dependency 2804 * against some special symbols in sharefs 2805 * nfs, and smbsrv. Determine them if needed when 2806 * the first file system is shared. 2807 * Neither sharefs, nfs or smbsrv are unloadable modules. 2808 */ 2809 int (*znfsexport_fs)(void *arg); 2810 int (*zshare_fs)(enum sharefs_sys_op, share_t *, uint32_t); 2811 int (*zsmbexport_fs)(void *arg, boolean_t add_share); 2812 2813 int zfs_nfsshare_inited; 2814 int zfs_smbshare_inited; 2815 2816 ddi_modhandle_t nfs_mod; 2817 ddi_modhandle_t sharefs_mod; 2818 ddi_modhandle_t smbsrv_mod; 2819 kmutex_t zfs_share_lock; 2820 2821 static int 2822 zfs_init_sharefs() 2823 { 2824 int error; 2825 2826 ASSERT(MUTEX_HELD(&zfs_share_lock)); 2827 /* Both NFS and SMB shares also require sharetab support. */ 2828 if (sharefs_mod == NULL && ((sharefs_mod = 2829 ddi_modopen("fs/sharefs", 2830 KRTLD_MODE_FIRST, &error)) == NULL)) { 2831 return (ENOSYS); 2832 } 2833 if (zshare_fs == NULL && ((zshare_fs = 2834 (int (*)(enum sharefs_sys_op, share_t *, uint32_t)) 2835 ddi_modsym(sharefs_mod, "sharefs_impl", &error)) == NULL)) { 2836 return (ENOSYS); 2837 } 2838 return (0); 2839 } 2840 2841 static int 2842 zfs_ioc_share(zfs_cmd_t *zc) 2843 { 2844 int error; 2845 int opcode; 2846 2847 switch (zc->zc_share.z_sharetype) { 2848 case ZFS_SHARE_NFS: 2849 case ZFS_UNSHARE_NFS: 2850 if (zfs_nfsshare_inited == 0) { 2851 mutex_enter(&zfs_share_lock); 2852 if (nfs_mod == NULL && ((nfs_mod = ddi_modopen("fs/nfs", 2853 KRTLD_MODE_FIRST, &error)) == NULL)) { 2854 mutex_exit(&zfs_share_lock); 2855 return (ENOSYS); 2856 } 2857 if (znfsexport_fs == NULL && 2858 ((znfsexport_fs = (int (*)(void *)) 2859 ddi_modsym(nfs_mod, 2860 "nfs_export", &error)) == NULL)) { 2861 mutex_exit(&zfs_share_lock); 2862 return (ENOSYS); 2863 } 2864 error = zfs_init_sharefs(); 2865 if (error) { 2866 mutex_exit(&zfs_share_lock); 2867 return (ENOSYS); 2868 } 2869 zfs_nfsshare_inited = 1; 2870 mutex_exit(&zfs_share_lock); 2871 } 2872 break; 2873 case ZFS_SHARE_SMB: 2874 case ZFS_UNSHARE_SMB: 2875 if (zfs_smbshare_inited == 0) { 2876 mutex_enter(&zfs_share_lock); 2877 if (smbsrv_mod == NULL && ((smbsrv_mod = 2878 ddi_modopen("drv/smbsrv", 2879 KRTLD_MODE_FIRST, &error)) == NULL)) { 2880 mutex_exit(&zfs_share_lock); 2881 return (ENOSYS); 2882 } 2883 if (zsmbexport_fs == NULL && ((zsmbexport_fs = 2884 (int (*)(void *, boolean_t))ddi_modsym(smbsrv_mod, 2885 "smb_server_share", &error)) == NULL)) { 2886 mutex_exit(&zfs_share_lock); 2887 return (ENOSYS); 2888 } 2889 error = zfs_init_sharefs(); 2890 if (error) { 2891 mutex_exit(&zfs_share_lock); 2892 return (ENOSYS); 2893 } 2894 zfs_smbshare_inited = 1; 2895 mutex_exit(&zfs_share_lock); 2896 } 2897 break; 2898 default: 2899 return (EINVAL); 2900 } 2901 2902 switch (zc->zc_share.z_sharetype) { 2903 case ZFS_SHARE_NFS: 2904 case ZFS_UNSHARE_NFS: 2905 if (error = 2906 znfsexport_fs((void *) 2907 (uintptr_t)zc->zc_share.z_exportdata)) 2908 return (error); 2909 break; 2910 case ZFS_SHARE_SMB: 2911 case ZFS_UNSHARE_SMB: 2912 if (error = zsmbexport_fs((void *) 2913 (uintptr_t)zc->zc_share.z_exportdata, 2914 zc->zc_share.z_sharetype == ZFS_SHARE_SMB ? 2915 B_TRUE : B_FALSE)) { 2916 return (error); 2917 } 2918 break; 2919 } 2920 2921 opcode = (zc->zc_share.z_sharetype == ZFS_SHARE_NFS || 2922 zc->zc_share.z_sharetype == ZFS_SHARE_SMB) ? 2923 SHAREFS_ADD : SHAREFS_REMOVE; 2924 2925 /* 2926 * Add or remove share from sharetab 2927 */ 2928 error = zshare_fs(opcode, 2929 (void *)(uintptr_t)zc->zc_share.z_sharedata, 2930 zc->zc_share.z_sharemax); 2931 2932 return (error); 2933 2934 } 2935 2936 /* 2937 * pool create, destroy, and export don't log the history as part of 2938 * zfsdev_ioctl, but rather zfs_ioc_pool_create, and zfs_ioc_pool_export 2939 * do the logging of those commands. 2940 */ 2941 static zfs_ioc_vec_t zfs_ioc_vec[] = { 2942 { zfs_ioc_pool_create, zfs_secpolicy_config, POOL_NAME, B_FALSE }, 2943 { zfs_ioc_pool_destroy, zfs_secpolicy_config, POOL_NAME, B_FALSE }, 2944 { zfs_ioc_pool_import, zfs_secpolicy_config, POOL_NAME, B_TRUE }, 2945 { zfs_ioc_pool_export, zfs_secpolicy_config, POOL_NAME, B_FALSE }, 2946 { zfs_ioc_pool_configs, zfs_secpolicy_none, NO_NAME, B_FALSE }, 2947 { zfs_ioc_pool_stats, zfs_secpolicy_read, POOL_NAME, B_FALSE }, 2948 { zfs_ioc_pool_tryimport, zfs_secpolicy_config, NO_NAME, B_FALSE }, 2949 { zfs_ioc_pool_scrub, zfs_secpolicy_config, POOL_NAME, B_TRUE }, 2950 { zfs_ioc_pool_freeze, zfs_secpolicy_config, NO_NAME, B_FALSE }, 2951 { zfs_ioc_pool_upgrade, zfs_secpolicy_config, POOL_NAME, B_TRUE }, 2952 { zfs_ioc_pool_get_history, zfs_secpolicy_config, POOL_NAME, B_FALSE }, 2953 { zfs_ioc_vdev_add, zfs_secpolicy_config, POOL_NAME, B_TRUE }, 2954 { zfs_ioc_vdev_remove, zfs_secpolicy_config, POOL_NAME, B_TRUE }, 2955 { zfs_ioc_vdev_set_state, zfs_secpolicy_config, POOL_NAME, B_TRUE }, 2956 { zfs_ioc_vdev_attach, zfs_secpolicy_config, POOL_NAME, B_TRUE }, 2957 { zfs_ioc_vdev_detach, zfs_secpolicy_config, POOL_NAME, B_TRUE }, 2958 { zfs_ioc_vdev_setpath, zfs_secpolicy_config, POOL_NAME, B_FALSE }, 2959 { zfs_ioc_objset_stats, zfs_secpolicy_read, DATASET_NAME, B_FALSE }, 2960 { zfs_ioc_objset_zplprops, zfs_secpolicy_read, DATASET_NAME, B_FALSE }, 2961 { zfs_ioc_dataset_list_next, zfs_secpolicy_read, 2962 DATASET_NAME, B_FALSE }, 2963 { zfs_ioc_snapshot_list_next, zfs_secpolicy_read, 2964 DATASET_NAME, B_FALSE }, 2965 { zfs_ioc_set_prop, zfs_secpolicy_none, DATASET_NAME, B_TRUE }, 2966 { zfs_ioc_create_minor, zfs_secpolicy_minor, DATASET_NAME, B_FALSE }, 2967 { zfs_ioc_remove_minor, zfs_secpolicy_minor, DATASET_NAME, B_FALSE }, 2968 { zfs_ioc_create, zfs_secpolicy_create, DATASET_NAME, B_TRUE }, 2969 { zfs_ioc_destroy, zfs_secpolicy_destroy, DATASET_NAME, B_TRUE }, 2970 { zfs_ioc_rollback, zfs_secpolicy_rollback, DATASET_NAME, B_TRUE }, 2971 { zfs_ioc_rename, zfs_secpolicy_rename, DATASET_NAME, B_TRUE }, 2972 { zfs_ioc_recv, zfs_secpolicy_receive, DATASET_NAME, B_TRUE }, 2973 { zfs_ioc_send, zfs_secpolicy_send, DATASET_NAME, B_TRUE }, 2974 { zfs_ioc_inject_fault, zfs_secpolicy_inject, NO_NAME, B_FALSE }, 2975 { zfs_ioc_clear_fault, zfs_secpolicy_inject, NO_NAME, B_FALSE }, 2976 { zfs_ioc_inject_list_next, zfs_secpolicy_inject, NO_NAME, B_FALSE }, 2977 { zfs_ioc_error_log, zfs_secpolicy_inject, POOL_NAME, B_FALSE }, 2978 { zfs_ioc_clear, zfs_secpolicy_config, POOL_NAME, B_TRUE }, 2979 { zfs_ioc_promote, zfs_secpolicy_promote, DATASET_NAME, B_TRUE }, 2980 { zfs_ioc_destroy_snaps, zfs_secpolicy_destroy, DATASET_NAME, B_TRUE }, 2981 { zfs_ioc_snapshot, zfs_secpolicy_snapshot, DATASET_NAME, B_TRUE }, 2982 { zfs_ioc_dsobj_to_dsname, zfs_secpolicy_config, POOL_NAME, B_FALSE }, 2983 { zfs_ioc_obj_to_path, zfs_secpolicy_config, NO_NAME, B_FALSE }, 2984 { zfs_ioc_pool_set_props, zfs_secpolicy_config, POOL_NAME, B_TRUE }, 2985 { zfs_ioc_pool_get_props, zfs_secpolicy_read, POOL_NAME, B_FALSE }, 2986 { zfs_ioc_set_fsacl, zfs_secpolicy_fsacl, DATASET_NAME, B_TRUE }, 2987 { zfs_ioc_get_fsacl, zfs_secpolicy_read, DATASET_NAME, B_FALSE }, 2988 { zfs_ioc_iscsi_perm_check, zfs_secpolicy_iscsi, 2989 DATASET_NAME, B_FALSE }, 2990 { zfs_ioc_share, zfs_secpolicy_share, DATASET_NAME, B_FALSE }, 2991 { zfs_ioc_inherit_prop, zfs_secpolicy_inherit, DATASET_NAME, B_TRUE }, 2992 }; 2993 2994 static int 2995 zfsdev_ioctl(dev_t dev, int cmd, intptr_t arg, int flag, cred_t *cr, int *rvalp) 2996 { 2997 zfs_cmd_t *zc; 2998 uint_t vec; 2999 int error, rc; 3000 3001 if (getminor(dev) != 0) 3002 return (zvol_ioctl(dev, cmd, arg, flag, cr, rvalp)); 3003 3004 vec = cmd - ZFS_IOC; 3005 ASSERT3U(getmajor(dev), ==, ddi_driver_major(zfs_dip)); 3006 3007 if (vec >= sizeof (zfs_ioc_vec) / sizeof (zfs_ioc_vec[0])) 3008 return (EINVAL); 3009 3010 zc = kmem_zalloc(sizeof (zfs_cmd_t), KM_SLEEP); 3011 3012 error = xcopyin((void *)arg, zc, sizeof (zfs_cmd_t)); 3013 3014 if (error == 0) 3015 error = zfs_ioc_vec[vec].zvec_secpolicy(zc, cr); 3016 3017 /* 3018 * Ensure that all pool/dataset names are valid before we pass down to 3019 * the lower layers. 3020 */ 3021 if (error == 0) { 3022 zc->zc_name[sizeof (zc->zc_name) - 1] = '\0'; 3023 switch (zfs_ioc_vec[vec].zvec_namecheck) { 3024 case POOL_NAME: 3025 if (pool_namecheck(zc->zc_name, NULL, NULL) != 0) 3026 error = EINVAL; 3027 break; 3028 3029 case DATASET_NAME: 3030 if (dataset_namecheck(zc->zc_name, NULL, NULL) != 0) 3031 error = EINVAL; 3032 break; 3033 3034 case NO_NAME: 3035 break; 3036 } 3037 } 3038 3039 if (error == 0) 3040 error = zfs_ioc_vec[vec].zvec_func(zc); 3041 3042 rc = xcopyout(zc, (void *)arg, sizeof (zfs_cmd_t)); 3043 if (error == 0) { 3044 error = rc; 3045 if (zfs_ioc_vec[vec].zvec_his_log == B_TRUE) 3046 zfs_log_history(zc); 3047 } 3048 3049 kmem_free(zc, sizeof (zfs_cmd_t)); 3050 return (error); 3051 } 3052 3053 static int 3054 zfs_attach(dev_info_t *dip, ddi_attach_cmd_t cmd) 3055 { 3056 if (cmd != DDI_ATTACH) 3057 return (DDI_FAILURE); 3058 3059 if (ddi_create_minor_node(dip, "zfs", S_IFCHR, 0, 3060 DDI_PSEUDO, 0) == DDI_FAILURE) 3061 return (DDI_FAILURE); 3062 3063 zfs_dip = dip; 3064 3065 ddi_report_dev(dip); 3066 3067 return (DDI_SUCCESS); 3068 } 3069 3070 static int 3071 zfs_detach(dev_info_t *dip, ddi_detach_cmd_t cmd) 3072 { 3073 if (spa_busy() || zfs_busy() || zvol_busy()) 3074 return (DDI_FAILURE); 3075 3076 if (cmd != DDI_DETACH) 3077 return (DDI_FAILURE); 3078 3079 zfs_dip = NULL; 3080 3081 ddi_prop_remove_all(dip); 3082 ddi_remove_minor_node(dip, NULL); 3083 3084 return (DDI_SUCCESS); 3085 } 3086 3087 /*ARGSUSED*/ 3088 static int 3089 zfs_info(dev_info_t *dip, ddi_info_cmd_t infocmd, void *arg, void **result) 3090 { 3091 switch (infocmd) { 3092 case DDI_INFO_DEVT2DEVINFO: 3093 *result = zfs_dip; 3094 return (DDI_SUCCESS); 3095 3096 case DDI_INFO_DEVT2INSTANCE: 3097 *result = (void *)0; 3098 return (DDI_SUCCESS); 3099 } 3100 3101 return (DDI_FAILURE); 3102 } 3103 3104 /* 3105 * OK, so this is a little weird. 3106 * 3107 * /dev/zfs is the control node, i.e. minor 0. 3108 * /dev/zvol/[r]dsk/pool/dataset are the zvols, minor > 0. 3109 * 3110 * /dev/zfs has basically nothing to do except serve up ioctls, 3111 * so most of the standard driver entry points are in zvol.c. 3112 */ 3113 static struct cb_ops zfs_cb_ops = { 3114 zvol_open, /* open */ 3115 zvol_close, /* close */ 3116 zvol_strategy, /* strategy */ 3117 nodev, /* print */ 3118 zvol_dump, /* dump */ 3119 zvol_read, /* read */ 3120 zvol_write, /* write */ 3121 zfsdev_ioctl, /* ioctl */ 3122 nodev, /* devmap */ 3123 nodev, /* mmap */ 3124 nodev, /* segmap */ 3125 nochpoll, /* poll */ 3126 ddi_prop_op, /* prop_op */ 3127 NULL, /* streamtab */ 3128 D_NEW | D_MP | D_64BIT, /* Driver compatibility flag */ 3129 CB_REV, /* version */ 3130 nodev, /* async read */ 3131 nodev, /* async write */ 3132 }; 3133 3134 static struct dev_ops zfs_dev_ops = { 3135 DEVO_REV, /* version */ 3136 0, /* refcnt */ 3137 zfs_info, /* info */ 3138 nulldev, /* identify */ 3139 nulldev, /* probe */ 3140 zfs_attach, /* attach */ 3141 zfs_detach, /* detach */ 3142 nodev, /* reset */ 3143 &zfs_cb_ops, /* driver operations */ 3144 NULL, /* no bus operations */ 3145 NULL, /* power */ 3146 ddi_quiesce_not_needed, /* quiesce */ 3147 }; 3148 3149 static struct modldrv zfs_modldrv = { 3150 &mod_driverops, 3151 "ZFS storage pool", 3152 &zfs_dev_ops 3153 }; 3154 3155 static struct modlinkage modlinkage = { 3156 MODREV_1, 3157 (void *)&zfs_modlfs, 3158 (void *)&zfs_modldrv, 3159 NULL 3160 }; 3161 3162 3163 uint_t zfs_fsyncer_key; 3164 extern uint_t rrw_tsd_key; 3165 3166 int 3167 _init(void) 3168 { 3169 int error; 3170 3171 spa_init(FREAD | FWRITE); 3172 zfs_init(); 3173 zvol_init(); 3174 3175 if ((error = mod_install(&modlinkage)) != 0) { 3176 zvol_fini(); 3177 zfs_fini(); 3178 spa_fini(); 3179 return (error); 3180 } 3181 3182 tsd_create(&zfs_fsyncer_key, NULL); 3183 tsd_create(&rrw_tsd_key, NULL); 3184 3185 error = ldi_ident_from_mod(&modlinkage, &zfs_li); 3186 ASSERT(error == 0); 3187 mutex_init(&zfs_share_lock, NULL, MUTEX_DEFAULT, NULL); 3188 3189 return (0); 3190 } 3191 3192 int 3193 _fini(void) 3194 { 3195 int error; 3196 3197 if (spa_busy() || zfs_busy() || zvol_busy() || zio_injection_enabled) 3198 return (EBUSY); 3199 3200 if ((error = mod_remove(&modlinkage)) != 0) 3201 return (error); 3202 3203 zvol_fini(); 3204 zfs_fini(); 3205 spa_fini(); 3206 if (zfs_nfsshare_inited) 3207 (void) ddi_modclose(nfs_mod); 3208 if (zfs_smbshare_inited) 3209 (void) ddi_modclose(smbsrv_mod); 3210 if (zfs_nfsshare_inited || zfs_smbshare_inited) 3211 (void) ddi_modclose(sharefs_mod); 3212 3213 tsd_destroy(&zfs_fsyncer_key); 3214 ldi_ident_release(zfs_li); 3215 zfs_li = NULL; 3216 mutex_destroy(&zfs_share_lock); 3217 3218 return (error); 3219 } 3220 3221 int 3222 _info(struct modinfo *modinfop) 3223 { 3224 return (mod_info(&modlinkage, modinfop)); 3225 } 3226