1 /* 2 * CDDL HEADER START 3 * 4 * The contents of this file are subject to the terms of the 5 * Common Development and Distribution License (the "License"). 6 * You may not use this file except in compliance with the License. 7 * 8 * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE 9 * or http://www.opensolaris.org/os/licensing. 10 * See the License for the specific language governing permissions 11 * and limitations under the License. 12 * 13 * When distributing Covered Code, include this CDDL HEADER in each 14 * file and include the License file at usr/src/OPENSOLARIS.LICENSE. 15 * If applicable, add the following below this CDDL HEADER, with the 16 * fields enclosed by brackets "[]" replaced with your own identifying 17 * information: Portions Copyright [yyyy] [name of copyright owner] 18 * 19 * CDDL HEADER END 20 */ 21 /* 22 * Copyright 2008 Sun Microsystems, Inc. All rights reserved. 23 * Use is subject to license terms. 24 */ 25 26 #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); 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; 859 860 zfs_log_history(zc); 861 error = spa_export(zc->zc_name, NULL, force); 862 return (error); 863 } 864 865 static int 866 zfs_ioc_pool_configs(zfs_cmd_t *zc) 867 { 868 nvlist_t *configs; 869 int error; 870 871 if ((configs = spa_all_configs(&zc->zc_cookie)) == NULL) 872 return (EEXIST); 873 874 error = put_nvlist(zc, configs); 875 876 nvlist_free(configs); 877 878 return (error); 879 } 880 881 static int 882 zfs_ioc_pool_stats(zfs_cmd_t *zc) 883 { 884 nvlist_t *config; 885 int error; 886 int ret = 0; 887 888 error = spa_get_stats(zc->zc_name, &config, zc->zc_value, 889 sizeof (zc->zc_value)); 890 891 if (config != NULL) { 892 ret = put_nvlist(zc, config); 893 nvlist_free(config); 894 895 /* 896 * The config may be present even if 'error' is non-zero. 897 * In this case we return success, and preserve the real errno 898 * in 'zc_cookie'. 899 */ 900 zc->zc_cookie = error; 901 } else { 902 ret = error; 903 } 904 905 return (ret); 906 } 907 908 /* 909 * Try to import the given pool, returning pool stats as appropriate so that 910 * user land knows which devices are available and overall pool health. 911 */ 912 static int 913 zfs_ioc_pool_tryimport(zfs_cmd_t *zc) 914 { 915 nvlist_t *tryconfig, *config; 916 int error; 917 918 if ((error = get_nvlist(zc->zc_nvlist_conf, zc->zc_nvlist_conf_size, 919 &tryconfig)) != 0) 920 return (error); 921 922 config = spa_tryimport(tryconfig); 923 924 nvlist_free(tryconfig); 925 926 if (config == NULL) 927 return (EINVAL); 928 929 error = put_nvlist(zc, config); 930 nvlist_free(config); 931 932 return (error); 933 } 934 935 static int 936 zfs_ioc_pool_scrub(zfs_cmd_t *zc) 937 { 938 spa_t *spa; 939 int error; 940 941 if ((error = spa_open(zc->zc_name, &spa, FTAG)) != 0) 942 return (error); 943 944 error = spa_scrub(spa, zc->zc_cookie); 945 946 spa_close(spa, FTAG); 947 948 return (error); 949 } 950 951 static int 952 zfs_ioc_pool_freeze(zfs_cmd_t *zc) 953 { 954 spa_t *spa; 955 int error; 956 957 error = spa_open(zc->zc_name, &spa, FTAG); 958 if (error == 0) { 959 spa_freeze(spa); 960 spa_close(spa, FTAG); 961 } 962 return (error); 963 } 964 965 static int 966 zfs_ioc_pool_upgrade(zfs_cmd_t *zc) 967 { 968 spa_t *spa; 969 int error; 970 971 if ((error = spa_open(zc->zc_name, &spa, FTAG)) != 0) 972 return (error); 973 974 if (zc->zc_cookie < spa_version(spa) || zc->zc_cookie > SPA_VERSION) { 975 spa_close(spa, FTAG); 976 return (EINVAL); 977 } 978 979 spa_upgrade(spa, zc->zc_cookie); 980 spa_close(spa, FTAG); 981 982 return (error); 983 } 984 985 static int 986 zfs_ioc_pool_get_history(zfs_cmd_t *zc) 987 { 988 spa_t *spa; 989 char *hist_buf; 990 uint64_t size; 991 int error; 992 993 if ((size = zc->zc_history_len) == 0) 994 return (EINVAL); 995 996 if ((error = spa_open(zc->zc_name, &spa, FTAG)) != 0) 997 return (error); 998 999 if (spa_version(spa) < SPA_VERSION_ZPOOL_HISTORY) { 1000 spa_close(spa, FTAG); 1001 return (ENOTSUP); 1002 } 1003 1004 hist_buf = kmem_alloc(size, KM_SLEEP); 1005 if ((error = spa_history_get(spa, &zc->zc_history_offset, 1006 &zc->zc_history_len, hist_buf)) == 0) { 1007 error = xcopyout(hist_buf, 1008 (char *)(uintptr_t)zc->zc_history, 1009 zc->zc_history_len); 1010 } 1011 1012 spa_close(spa, FTAG); 1013 kmem_free(hist_buf, size); 1014 return (error); 1015 } 1016 1017 static int 1018 zfs_ioc_dsobj_to_dsname(zfs_cmd_t *zc) 1019 { 1020 int error; 1021 1022 if (error = dsl_dsobj_to_dsname(zc->zc_name, zc->zc_obj, zc->zc_value)) 1023 return (error); 1024 1025 return (0); 1026 } 1027 1028 static int 1029 zfs_ioc_obj_to_path(zfs_cmd_t *zc) 1030 { 1031 objset_t *osp; 1032 int error; 1033 1034 if ((error = dmu_objset_open(zc->zc_name, DMU_OST_ZFS, 1035 DS_MODE_USER | DS_MODE_READONLY, &osp)) != 0) 1036 return (error); 1037 error = zfs_obj_to_path(osp, zc->zc_obj, zc->zc_value, 1038 sizeof (zc->zc_value)); 1039 dmu_objset_close(osp); 1040 1041 return (error); 1042 } 1043 1044 static int 1045 zfs_ioc_vdev_add(zfs_cmd_t *zc) 1046 { 1047 spa_t *spa; 1048 int error; 1049 nvlist_t *config, **l2cache, **spares; 1050 uint_t nl2cache = 0, nspares = 0; 1051 1052 error = spa_open(zc->zc_name, &spa, FTAG); 1053 if (error != 0) 1054 return (error); 1055 1056 error = get_nvlist(zc->zc_nvlist_conf, zc->zc_nvlist_conf_size, 1057 &config); 1058 (void) nvlist_lookup_nvlist_array(config, ZPOOL_CONFIG_L2CACHE, 1059 &l2cache, &nl2cache); 1060 1061 (void) nvlist_lookup_nvlist_array(config, ZPOOL_CONFIG_SPARES, 1062 &spares, &nspares); 1063 1064 /* 1065 * A root pool with concatenated devices is not supported. 1066 * Thus, can not add a device to a root pool. 1067 * 1068 * Intent log device can not be added to a rootpool because 1069 * during mountroot, zil is replayed, a seperated log device 1070 * can not be accessed during the mountroot time. 1071 * 1072 * l2cache and spare devices are ok to be added to a rootpool. 1073 */ 1074 if (spa->spa_bootfs != 0 && nl2cache == 0 && nspares == 0) { 1075 spa_close(spa, FTAG); 1076 return (EDOM); 1077 } 1078 1079 if (error == 0) { 1080 error = spa_vdev_add(spa, config); 1081 nvlist_free(config); 1082 } 1083 spa_close(spa, FTAG); 1084 return (error); 1085 } 1086 1087 static int 1088 zfs_ioc_vdev_remove(zfs_cmd_t *zc) 1089 { 1090 spa_t *spa; 1091 int error; 1092 1093 error = spa_open(zc->zc_name, &spa, FTAG); 1094 if (error != 0) 1095 return (error); 1096 error = spa_vdev_remove(spa, zc->zc_guid, B_FALSE); 1097 spa_close(spa, FTAG); 1098 return (error); 1099 } 1100 1101 static int 1102 zfs_ioc_vdev_set_state(zfs_cmd_t *zc) 1103 { 1104 spa_t *spa; 1105 int error; 1106 vdev_state_t newstate = VDEV_STATE_UNKNOWN; 1107 1108 if ((error = spa_open(zc->zc_name, &spa, FTAG)) != 0) 1109 return (error); 1110 switch (zc->zc_cookie) { 1111 case VDEV_STATE_ONLINE: 1112 error = vdev_online(spa, zc->zc_guid, zc->zc_obj, &newstate); 1113 break; 1114 1115 case VDEV_STATE_OFFLINE: 1116 error = vdev_offline(spa, zc->zc_guid, zc->zc_obj); 1117 break; 1118 1119 case VDEV_STATE_FAULTED: 1120 error = vdev_fault(spa, zc->zc_guid); 1121 break; 1122 1123 case VDEV_STATE_DEGRADED: 1124 error = vdev_degrade(spa, zc->zc_guid); 1125 break; 1126 1127 default: 1128 error = EINVAL; 1129 } 1130 zc->zc_cookie = newstate; 1131 spa_close(spa, FTAG); 1132 return (error); 1133 } 1134 1135 static int 1136 zfs_ioc_vdev_attach(zfs_cmd_t *zc) 1137 { 1138 spa_t *spa; 1139 int replacing = zc->zc_cookie; 1140 nvlist_t *config; 1141 int error; 1142 1143 if ((error = spa_open(zc->zc_name, &spa, FTAG)) != 0) 1144 return (error); 1145 1146 if ((error = get_nvlist(zc->zc_nvlist_conf, zc->zc_nvlist_conf_size, 1147 &config)) == 0) { 1148 error = spa_vdev_attach(spa, zc->zc_guid, config, replacing); 1149 nvlist_free(config); 1150 } 1151 1152 spa_close(spa, FTAG); 1153 return (error); 1154 } 1155 1156 static int 1157 zfs_ioc_vdev_detach(zfs_cmd_t *zc) 1158 { 1159 spa_t *spa; 1160 int error; 1161 1162 if ((error = spa_open(zc->zc_name, &spa, FTAG)) != 0) 1163 return (error); 1164 1165 error = spa_vdev_detach(spa, zc->zc_guid, B_FALSE); 1166 1167 spa_close(spa, FTAG); 1168 return (error); 1169 } 1170 1171 static int 1172 zfs_ioc_vdev_setpath(zfs_cmd_t *zc) 1173 { 1174 spa_t *spa; 1175 char *path = zc->zc_value; 1176 uint64_t guid = zc->zc_guid; 1177 int error; 1178 1179 error = spa_open(zc->zc_name, &spa, FTAG); 1180 if (error != 0) 1181 return (error); 1182 1183 error = spa_vdev_setpath(spa, guid, path); 1184 spa_close(spa, FTAG); 1185 return (error); 1186 } 1187 1188 /* 1189 * inputs: 1190 * zc_name name of filesystem 1191 * zc_nvlist_dst_size size of buffer for property nvlist 1192 * 1193 * outputs: 1194 * zc_objset_stats stats 1195 * zc_nvlist_dst property nvlist 1196 * zc_nvlist_dst_size size of property nvlist 1197 */ 1198 static int 1199 zfs_ioc_objset_stats(zfs_cmd_t *zc) 1200 { 1201 objset_t *os = NULL; 1202 int error; 1203 nvlist_t *nv; 1204 1205 if (error = dmu_objset_open(zc->zc_name, 1206 DMU_OST_ANY, DS_MODE_USER | DS_MODE_READONLY, &os)) 1207 return (error); 1208 1209 dmu_objset_fast_stat(os, &zc->zc_objset_stats); 1210 1211 if (zc->zc_nvlist_dst != 0 && 1212 (error = dsl_prop_get_all(os, &nv, FALSE)) == 0) { 1213 dmu_objset_stats(os, nv); 1214 /* 1215 * NB: zvol_get_stats() will read the objset contents, 1216 * which we aren't supposed to do with a 1217 * DS_MODE_USER hold, because it could be 1218 * inconsistent. So this is a bit of a workaround... 1219 */ 1220 if (!zc->zc_objset_stats.dds_inconsistent) { 1221 if (dmu_objset_type(os) == DMU_OST_ZVOL) 1222 VERIFY(zvol_get_stats(os, nv) == 0); 1223 } 1224 error = put_nvlist(zc, nv); 1225 nvlist_free(nv); 1226 } 1227 1228 dmu_objset_close(os); 1229 return (error); 1230 } 1231 1232 static int 1233 nvl_add_zplprop(objset_t *os, nvlist_t *props, zfs_prop_t prop) 1234 { 1235 uint64_t value; 1236 int error; 1237 1238 /* 1239 * zfs_get_zplprop() will either find a value or give us 1240 * the default value (if there is one). 1241 */ 1242 if ((error = zfs_get_zplprop(os, prop, &value)) != 0) 1243 return (error); 1244 VERIFY(nvlist_add_uint64(props, zfs_prop_to_name(prop), value) == 0); 1245 return (0); 1246 } 1247 1248 /* 1249 * inputs: 1250 * zc_name name of filesystem 1251 * zc_nvlist_dst_size size of buffer for zpl property nvlist 1252 * 1253 * outputs: 1254 * zc_nvlist_dst zpl property nvlist 1255 * zc_nvlist_dst_size size of zpl property nvlist 1256 */ 1257 static int 1258 zfs_ioc_objset_zplprops(zfs_cmd_t *zc) 1259 { 1260 objset_t *os; 1261 int err; 1262 1263 if (err = dmu_objset_open(zc->zc_name, 1264 DMU_OST_ANY, DS_MODE_USER | DS_MODE_READONLY, &os)) 1265 return (err); 1266 1267 dmu_objset_fast_stat(os, &zc->zc_objset_stats); 1268 1269 /* 1270 * NB: nvl_add_zplprop() will read the objset contents, 1271 * which we aren't supposed to do with a DS_MODE_USER 1272 * hold, because it could be inconsistent. 1273 */ 1274 if (zc->zc_nvlist_dst != NULL && 1275 !zc->zc_objset_stats.dds_inconsistent && 1276 dmu_objset_type(os) == DMU_OST_ZFS) { 1277 nvlist_t *nv; 1278 1279 VERIFY(nvlist_alloc(&nv, NV_UNIQUE_NAME, KM_SLEEP) == 0); 1280 if ((err = nvl_add_zplprop(os, nv, ZFS_PROP_VERSION)) == 0 && 1281 (err = nvl_add_zplprop(os, nv, ZFS_PROP_NORMALIZE)) == 0 && 1282 (err = nvl_add_zplprop(os, nv, ZFS_PROP_UTF8ONLY)) == 0 && 1283 (err = nvl_add_zplprop(os, nv, ZFS_PROP_CASE)) == 0) 1284 err = put_nvlist(zc, nv); 1285 nvlist_free(nv); 1286 } else { 1287 err = ENOENT; 1288 } 1289 dmu_objset_close(os); 1290 return (err); 1291 } 1292 1293 static void 1294 zfs_prefetch_datasets(zfs_cmd_t *zc, objset_t *os, char *p) 1295 { 1296 uint64_t cookie = 0; 1297 int error; 1298 1299 do { 1300 error = dmu_dir_list_next(os, 1301 sizeof (zc->zc_name) - (p - zc->zc_name), p, 1302 NULL, &cookie); 1303 } while (error == 0 && !INGLOBALZONE(curproc) && 1304 !zone_dataset_visible(zc->zc_name, NULL) && 1305 !dmu_objset_prefetch(zc->zc_name, NULL)); 1306 } 1307 1308 static void 1309 zfs_prefetch_snapshots(zfs_cmd_t *zc) 1310 { 1311 dmu_objset_find(zc->zc_name, dmu_objset_prefetch, 1312 NULL, DS_FIND_SNAPSHOTS); 1313 } 1314 1315 /* 1316 * inputs: 1317 * zc_name name of filesystem 1318 * zc_cookie zap cursor 1319 * zc_nvlist_dst_size size of buffer for property nvlist 1320 * 1321 * outputs: 1322 * zc_name name of next filesystem 1323 * zc_objset_stats stats 1324 * zc_nvlist_dst property nvlist 1325 * zc_nvlist_dst_size size of property nvlist 1326 */ 1327 static int 1328 zfs_ioc_dataset_list_next(zfs_cmd_t *zc) 1329 { 1330 objset_t *os; 1331 int error; 1332 char *p; 1333 1334 if (error = dmu_objset_open(zc->zc_name, 1335 DMU_OST_ANY, DS_MODE_USER | DS_MODE_READONLY, &os)) { 1336 if (error == ENOENT) 1337 error = ESRCH; 1338 return (error); 1339 } 1340 1341 p = strrchr(zc->zc_name, '/'); 1342 if (p == NULL || p[1] != '\0') 1343 (void) strlcat(zc->zc_name, "/", sizeof (zc->zc_name)); 1344 p = zc->zc_name + strlen(zc->zc_name); 1345 1346 if (zc->zc_cookie == 0) 1347 zfs_prefetch_datasets(zc, os, p); 1348 do { 1349 error = dmu_dir_list_next(os, 1350 sizeof (zc->zc_name) - (p - zc->zc_name), p, 1351 NULL, &zc->zc_cookie); 1352 if (error == ENOENT) 1353 error = ESRCH; 1354 } while (error == 0 && !INGLOBALZONE(curproc) && 1355 !zone_dataset_visible(zc->zc_name, NULL)); 1356 dmu_objset_close(os); 1357 1358 /* 1359 * If it's a hidden dataset (ie. with a '$' in its name), don't 1360 * try to get stats for it. Userland will skip over it. 1361 */ 1362 if (error == 0 && strchr(zc->zc_name, '$') == NULL) 1363 error = zfs_ioc_objset_stats(zc); /* fill in the stats */ 1364 1365 return (error); 1366 } 1367 1368 /* 1369 * inputs: 1370 * zc_name name of filesystem 1371 * zc_cookie zap cursor 1372 * zc_nvlist_dst_size size of buffer for property nvlist 1373 * 1374 * outputs: 1375 * zc_name name of next snapshot 1376 * zc_objset_stats stats 1377 * zc_nvlist_dst property nvlist 1378 * zc_nvlist_dst_size size of property nvlist 1379 */ 1380 static int 1381 zfs_ioc_snapshot_list_next(zfs_cmd_t *zc) 1382 { 1383 objset_t *os; 1384 int error; 1385 1386 error = dmu_objset_open(zc->zc_name, 1387 DMU_OST_ANY, DS_MODE_USER | DS_MODE_READONLY, &os); 1388 if (error) 1389 return (error == ENOENT ? ESRCH : error); 1390 1391 if (zc->zc_cookie == 0) 1392 zfs_prefetch_snapshots(zc); 1393 /* 1394 * A dataset name of maximum length cannot have any snapshots, 1395 * so exit immediately. 1396 */ 1397 if (strlcat(zc->zc_name, "@", sizeof (zc->zc_name)) >= MAXNAMELEN) { 1398 dmu_objset_close(os); 1399 return (ESRCH); 1400 } 1401 1402 error = dmu_snapshot_list_next(os, 1403 sizeof (zc->zc_name) - strlen(zc->zc_name), 1404 zc->zc_name + strlen(zc->zc_name), NULL, &zc->zc_cookie, NULL); 1405 dmu_objset_close(os); 1406 if (error == 0) 1407 error = zfs_ioc_objset_stats(zc); /* fill in the stats */ 1408 else if (error == ENOENT) 1409 error = ESRCH; 1410 1411 /* if we failed, undo the @ that we tacked on to zc_name */ 1412 if (error) 1413 *strchr(zc->zc_name, '@') = '\0'; 1414 return (error); 1415 } 1416 1417 int 1418 zfs_set_prop_nvlist(const char *name, nvlist_t *nvl) 1419 { 1420 nvpair_t *elem; 1421 int error; 1422 uint64_t intval; 1423 char *strval; 1424 1425 /* 1426 * First validate permission to set all of the properties 1427 */ 1428 elem = NULL; 1429 while ((elem = nvlist_next_nvpair(nvl, elem)) != NULL) { 1430 const char *propname = nvpair_name(elem); 1431 zfs_prop_t prop = zfs_name_to_prop(propname); 1432 1433 if (prop == ZPROP_INVAL) { 1434 /* 1435 * If this is a user-defined property, it must be a 1436 * string, and there is no further validation to do. 1437 */ 1438 if (!zfs_prop_user(propname) || 1439 nvpair_type(elem) != DATA_TYPE_STRING) 1440 return (EINVAL); 1441 1442 if (error = zfs_secpolicy_write_perms(name, 1443 ZFS_DELEG_PERM_USERPROP, CRED())) 1444 return (error); 1445 continue; 1446 } 1447 1448 if ((error = zfs_secpolicy_setprop(name, prop, CRED())) != 0) 1449 return (error); 1450 1451 /* 1452 * Check that this value is valid for this pool version 1453 */ 1454 switch (prop) { 1455 case ZFS_PROP_COMPRESSION: 1456 /* 1457 * If the user specified gzip compression, make sure 1458 * the SPA supports it. We ignore any errors here since 1459 * we'll catch them later. 1460 */ 1461 if (nvpair_type(elem) == DATA_TYPE_UINT64 && 1462 nvpair_value_uint64(elem, &intval) == 0) { 1463 if (intval >= ZIO_COMPRESS_GZIP_1 && 1464 intval <= ZIO_COMPRESS_GZIP_9 && 1465 zfs_earlier_version(name, 1466 SPA_VERSION_GZIP_COMPRESSION)) 1467 return (ENOTSUP); 1468 1469 /* 1470 * If this is a bootable dataset then 1471 * verify that the compression algorithm 1472 * is supported for booting. We must return 1473 * something other than ENOTSUP since it 1474 * implies a downrev pool version. 1475 */ 1476 if (zfs_is_bootfs(name) && 1477 !BOOTFS_COMPRESS_VALID(intval)) 1478 return (ERANGE); 1479 } 1480 break; 1481 1482 case ZFS_PROP_COPIES: 1483 if (zfs_earlier_version(name, 1484 SPA_VERSION_DITTO_BLOCKS)) 1485 return (ENOTSUP); 1486 break; 1487 1488 case ZFS_PROP_SHARESMB: 1489 if (zpl_earlier_version(name, ZPL_VERSION_FUID)) 1490 return (ENOTSUP); 1491 break; 1492 1493 case ZFS_PROP_ACLINHERIT: 1494 if (nvpair_type(elem) == DATA_TYPE_UINT64 && 1495 nvpair_value_uint64(elem, &intval) == 0) 1496 if (intval == ZFS_ACL_PASSTHROUGH_X && 1497 zfs_earlier_version(name, 1498 SPA_VERSION_PASSTHROUGH_X)) 1499 return (ENOTSUP); 1500 } 1501 } 1502 1503 elem = NULL; 1504 while ((elem = nvlist_next_nvpair(nvl, elem)) != NULL) { 1505 const char *propname = nvpair_name(elem); 1506 zfs_prop_t prop = zfs_name_to_prop(propname); 1507 1508 if (prop == ZPROP_INVAL) { 1509 VERIFY(nvpair_value_string(elem, &strval) == 0); 1510 error = dsl_prop_set(name, propname, 1, 1511 strlen(strval) + 1, strval); 1512 if (error == 0) 1513 continue; 1514 else 1515 return (error); 1516 } 1517 1518 switch (prop) { 1519 case ZFS_PROP_QUOTA: 1520 if ((error = nvpair_value_uint64(elem, &intval)) != 0 || 1521 (error = dsl_dir_set_quota(name, intval)) != 0) 1522 return (error); 1523 break; 1524 1525 case ZFS_PROP_REFQUOTA: 1526 if ((error = nvpair_value_uint64(elem, &intval)) != 0 || 1527 (error = dsl_dataset_set_quota(name, intval)) != 0) 1528 return (error); 1529 break; 1530 1531 case ZFS_PROP_RESERVATION: 1532 if ((error = nvpair_value_uint64(elem, &intval)) != 0 || 1533 (error = dsl_dir_set_reservation(name, 1534 intval)) != 0) 1535 return (error); 1536 break; 1537 1538 case ZFS_PROP_REFRESERVATION: 1539 if ((error = nvpair_value_uint64(elem, &intval)) != 0 || 1540 (error = dsl_dataset_set_reservation(name, 1541 intval)) != 0) 1542 return (error); 1543 break; 1544 1545 case ZFS_PROP_VOLSIZE: 1546 if ((error = nvpair_value_uint64(elem, &intval)) != 0 || 1547 (error = zvol_set_volsize(name, 1548 ddi_driver_major(zfs_dip), intval)) != 0) 1549 return (error); 1550 break; 1551 1552 case ZFS_PROP_VOLBLOCKSIZE: 1553 if ((error = nvpair_value_uint64(elem, &intval)) != 0 || 1554 (error = zvol_set_volblocksize(name, intval)) != 0) 1555 return (error); 1556 break; 1557 1558 case ZFS_PROP_VERSION: 1559 if ((error = nvpair_value_uint64(elem, &intval)) != 0 || 1560 (error = zfs_set_version(name, intval)) != 0) 1561 return (error); 1562 break; 1563 1564 default: 1565 if (nvpair_type(elem) == DATA_TYPE_STRING) { 1566 if (zfs_prop_get_type(prop) != 1567 PROP_TYPE_STRING) 1568 return (EINVAL); 1569 VERIFY(nvpair_value_string(elem, &strval) == 0); 1570 if ((error = dsl_prop_set(name, 1571 nvpair_name(elem), 1, strlen(strval) + 1, 1572 strval)) != 0) 1573 return (error); 1574 } else if (nvpair_type(elem) == DATA_TYPE_UINT64) { 1575 const char *unused; 1576 1577 VERIFY(nvpair_value_uint64(elem, &intval) == 0); 1578 1579 switch (zfs_prop_get_type(prop)) { 1580 case PROP_TYPE_NUMBER: 1581 break; 1582 case PROP_TYPE_STRING: 1583 return (EINVAL); 1584 case PROP_TYPE_INDEX: 1585 if (zfs_prop_index_to_string(prop, 1586 intval, &unused) != 0) 1587 return (EINVAL); 1588 break; 1589 default: 1590 cmn_err(CE_PANIC, 1591 "unknown property type"); 1592 break; 1593 } 1594 1595 if ((error = dsl_prop_set(name, propname, 1596 8, 1, &intval)) != 0) 1597 return (error); 1598 } else { 1599 return (EINVAL); 1600 } 1601 break; 1602 } 1603 } 1604 1605 return (0); 1606 } 1607 1608 /* 1609 * inputs: 1610 * zc_name name of filesystem 1611 * zc_value name of property to inherit 1612 * zc_nvlist_src{_size} nvlist of properties to apply 1613 * zc_cookie clear existing local props? 1614 * 1615 * outputs: none 1616 */ 1617 static int 1618 zfs_ioc_set_prop(zfs_cmd_t *zc) 1619 { 1620 nvlist_t *nvl; 1621 int error; 1622 1623 if ((error = get_nvlist(zc->zc_nvlist_src, zc->zc_nvlist_src_size, 1624 &nvl)) != 0) 1625 return (error); 1626 1627 if (zc->zc_cookie) { 1628 nvlist_t *origprops; 1629 objset_t *os; 1630 1631 if (dmu_objset_open(zc->zc_name, DMU_OST_ANY, 1632 DS_MODE_USER | DS_MODE_READONLY, &os) == 0) { 1633 if (dsl_prop_get_all(os, &origprops, TRUE) == 0) { 1634 clear_props(zc->zc_name, origprops); 1635 nvlist_free(origprops); 1636 } 1637 dmu_objset_close(os); 1638 } 1639 1640 } 1641 1642 error = zfs_set_prop_nvlist(zc->zc_name, nvl); 1643 1644 nvlist_free(nvl); 1645 return (error); 1646 } 1647 1648 /* 1649 * inputs: 1650 * zc_name name of filesystem 1651 * zc_value name of property to inherit 1652 * 1653 * outputs: none 1654 */ 1655 static int 1656 zfs_ioc_inherit_prop(zfs_cmd_t *zc) 1657 { 1658 /* the property name has been validated by zfs_secpolicy_inherit() */ 1659 return (dsl_prop_set(zc->zc_name, zc->zc_value, 0, 0, NULL)); 1660 } 1661 1662 static int 1663 zfs_ioc_pool_set_props(zfs_cmd_t *zc) 1664 { 1665 nvlist_t *props; 1666 spa_t *spa; 1667 int error; 1668 1669 if ((error = get_nvlist(zc->zc_nvlist_src, zc->zc_nvlist_src_size, 1670 &props))) 1671 return (error); 1672 1673 if ((error = spa_open(zc->zc_name, &spa, FTAG)) != 0) { 1674 nvlist_free(props); 1675 return (error); 1676 } 1677 1678 error = spa_prop_set(spa, props); 1679 1680 nvlist_free(props); 1681 spa_close(spa, FTAG); 1682 1683 return (error); 1684 } 1685 1686 static int 1687 zfs_ioc_pool_get_props(zfs_cmd_t *zc) 1688 { 1689 spa_t *spa; 1690 int error; 1691 nvlist_t *nvp = NULL; 1692 1693 if ((error = spa_open(zc->zc_name, &spa, FTAG)) != 0) 1694 return (error); 1695 1696 error = spa_prop_get(spa, &nvp); 1697 1698 if (error == 0 && zc->zc_nvlist_dst != NULL) 1699 error = put_nvlist(zc, nvp); 1700 else 1701 error = EFAULT; 1702 1703 spa_close(spa, FTAG); 1704 1705 if (nvp) 1706 nvlist_free(nvp); 1707 return (error); 1708 } 1709 1710 static int 1711 zfs_ioc_iscsi_perm_check(zfs_cmd_t *zc) 1712 { 1713 nvlist_t *nvp; 1714 int error; 1715 uint32_t uid; 1716 uint32_t gid; 1717 uint32_t *groups; 1718 uint_t group_cnt; 1719 cred_t *usercred; 1720 1721 if ((error = get_nvlist(zc->zc_nvlist_src, zc->zc_nvlist_src_size, 1722 &nvp)) != 0) { 1723 return (error); 1724 } 1725 1726 if ((error = nvlist_lookup_uint32(nvp, 1727 ZFS_DELEG_PERM_UID, &uid)) != 0) { 1728 nvlist_free(nvp); 1729 return (EPERM); 1730 } 1731 1732 if ((error = nvlist_lookup_uint32(nvp, 1733 ZFS_DELEG_PERM_GID, &gid)) != 0) { 1734 nvlist_free(nvp); 1735 return (EPERM); 1736 } 1737 1738 if ((error = nvlist_lookup_uint32_array(nvp, ZFS_DELEG_PERM_GROUPS, 1739 &groups, &group_cnt)) != 0) { 1740 nvlist_free(nvp); 1741 return (EPERM); 1742 } 1743 usercred = cralloc(); 1744 if ((crsetugid(usercred, uid, gid) != 0) || 1745 (crsetgroups(usercred, group_cnt, (gid_t *)groups) != 0)) { 1746 nvlist_free(nvp); 1747 crfree(usercred); 1748 return (EPERM); 1749 } 1750 nvlist_free(nvp); 1751 error = dsl_deleg_access(zc->zc_name, 1752 zfs_prop_to_name(ZFS_PROP_SHAREISCSI), usercred); 1753 crfree(usercred); 1754 return (error); 1755 } 1756 1757 /* 1758 * inputs: 1759 * zc_name name of filesystem 1760 * zc_nvlist_src{_size} nvlist of delegated permissions 1761 * zc_perm_action allow/unallow flag 1762 * 1763 * outputs: none 1764 */ 1765 static int 1766 zfs_ioc_set_fsacl(zfs_cmd_t *zc) 1767 { 1768 int error; 1769 nvlist_t *fsaclnv = NULL; 1770 1771 if ((error = get_nvlist(zc->zc_nvlist_src, zc->zc_nvlist_src_size, 1772 &fsaclnv)) != 0) 1773 return (error); 1774 1775 /* 1776 * Verify nvlist is constructed correctly 1777 */ 1778 if ((error = zfs_deleg_verify_nvlist(fsaclnv)) != 0) { 1779 nvlist_free(fsaclnv); 1780 return (EINVAL); 1781 } 1782 1783 /* 1784 * If we don't have PRIV_SYS_MOUNT, then validate 1785 * that user is allowed to hand out each permission in 1786 * the nvlist(s) 1787 */ 1788 1789 error = secpolicy_zfs(CRED()); 1790 if (error) { 1791 if (zc->zc_perm_action == B_FALSE) { 1792 error = dsl_deleg_can_allow(zc->zc_name, 1793 fsaclnv, CRED()); 1794 } else { 1795 error = dsl_deleg_can_unallow(zc->zc_name, 1796 fsaclnv, CRED()); 1797 } 1798 } 1799 1800 if (error == 0) 1801 error = dsl_deleg_set(zc->zc_name, fsaclnv, zc->zc_perm_action); 1802 1803 nvlist_free(fsaclnv); 1804 return (error); 1805 } 1806 1807 /* 1808 * inputs: 1809 * zc_name name of filesystem 1810 * 1811 * outputs: 1812 * zc_nvlist_src{_size} nvlist of delegated permissions 1813 */ 1814 static int 1815 zfs_ioc_get_fsacl(zfs_cmd_t *zc) 1816 { 1817 nvlist_t *nvp; 1818 int error; 1819 1820 if ((error = dsl_deleg_get(zc->zc_name, &nvp)) == 0) { 1821 error = put_nvlist(zc, nvp); 1822 nvlist_free(nvp); 1823 } 1824 1825 return (error); 1826 } 1827 1828 /* 1829 * inputs: 1830 * zc_name name of volume 1831 * 1832 * outputs: none 1833 */ 1834 static int 1835 zfs_ioc_create_minor(zfs_cmd_t *zc) 1836 { 1837 return (zvol_create_minor(zc->zc_name, ddi_driver_major(zfs_dip))); 1838 } 1839 1840 /* 1841 * inputs: 1842 * zc_name name of volume 1843 * 1844 * outputs: none 1845 */ 1846 static int 1847 zfs_ioc_remove_minor(zfs_cmd_t *zc) 1848 { 1849 return (zvol_remove_minor(zc->zc_name)); 1850 } 1851 1852 /* 1853 * Search the vfs list for a specified resource. Returns a pointer to it 1854 * or NULL if no suitable entry is found. The caller of this routine 1855 * is responsible for releasing the returned vfs pointer. 1856 */ 1857 static vfs_t * 1858 zfs_get_vfs(const char *resource) 1859 { 1860 struct vfs *vfsp; 1861 struct vfs *vfs_found = NULL; 1862 1863 vfs_list_read_lock(); 1864 vfsp = rootvfs; 1865 do { 1866 if (strcmp(refstr_value(vfsp->vfs_resource), resource) == 0) { 1867 VFS_HOLD(vfsp); 1868 vfs_found = vfsp; 1869 break; 1870 } 1871 vfsp = vfsp->vfs_next; 1872 } while (vfsp != rootvfs); 1873 vfs_list_unlock(); 1874 return (vfs_found); 1875 } 1876 1877 /* ARGSUSED */ 1878 static void 1879 zfs_create_cb(objset_t *os, void *arg, cred_t *cr, dmu_tx_t *tx) 1880 { 1881 zfs_creat_t *zct = arg; 1882 1883 zfs_create_fs(os, cr, zct->zct_zplprops, tx); 1884 } 1885 1886 #define ZFS_PROP_UNDEFINED ((uint64_t)-1) 1887 1888 /* 1889 * inputs: 1890 * createprops list of properties requested by creator 1891 * default_zplver zpl version to use if unspecified in createprops 1892 * fuids_ok fuids allowed in this version of the spa? 1893 * os parent objset pointer (NULL if root fs) 1894 * 1895 * outputs: 1896 * zplprops values for the zplprops we attach to the master node object 1897 * is_ci true if requested file system will be purely case-insensitive 1898 * 1899 * Determine the settings for utf8only, normalization and 1900 * casesensitivity. Specific values may have been requested by the 1901 * creator and/or we can inherit values from the parent dataset. If 1902 * the file system is of too early a vintage, a creator can not 1903 * request settings for these properties, even if the requested 1904 * setting is the default value. We don't actually want to create dsl 1905 * properties for these, so remove them from the source nvlist after 1906 * processing. 1907 */ 1908 static int 1909 zfs_fill_zplprops_impl(objset_t *os, uint64_t default_zplver, 1910 boolean_t fuids_ok, nvlist_t *createprops, nvlist_t *zplprops, 1911 boolean_t *is_ci) 1912 { 1913 uint64_t zplver = default_zplver; 1914 uint64_t sense = ZFS_PROP_UNDEFINED; 1915 uint64_t norm = ZFS_PROP_UNDEFINED; 1916 uint64_t u8 = ZFS_PROP_UNDEFINED; 1917 1918 ASSERT(zplprops != NULL); 1919 1920 /* 1921 * Pull out creator prop choices, if any. 1922 */ 1923 if (createprops) { 1924 (void) nvlist_lookup_uint64(createprops, 1925 zfs_prop_to_name(ZFS_PROP_VERSION), &zplver); 1926 (void) nvlist_lookup_uint64(createprops, 1927 zfs_prop_to_name(ZFS_PROP_NORMALIZE), &norm); 1928 (void) nvlist_remove_all(createprops, 1929 zfs_prop_to_name(ZFS_PROP_NORMALIZE)); 1930 (void) nvlist_lookup_uint64(createprops, 1931 zfs_prop_to_name(ZFS_PROP_UTF8ONLY), &u8); 1932 (void) nvlist_remove_all(createprops, 1933 zfs_prop_to_name(ZFS_PROP_UTF8ONLY)); 1934 (void) nvlist_lookup_uint64(createprops, 1935 zfs_prop_to_name(ZFS_PROP_CASE), &sense); 1936 (void) nvlist_remove_all(createprops, 1937 zfs_prop_to_name(ZFS_PROP_CASE)); 1938 } 1939 1940 /* 1941 * If the zpl version requested is whacky or the file system 1942 * or pool is version is too "young" to support normalization 1943 * and the creator tried to set a value for one of the props, 1944 * error out. 1945 */ 1946 if ((zplver < ZPL_VERSION_INITIAL || zplver > ZPL_VERSION) || 1947 (zplver >= ZPL_VERSION_FUID && !fuids_ok) || 1948 (zplver < ZPL_VERSION_NORMALIZATION && 1949 (norm != ZFS_PROP_UNDEFINED || u8 != ZFS_PROP_UNDEFINED || 1950 sense != ZFS_PROP_UNDEFINED))) 1951 return (ENOTSUP); 1952 1953 /* 1954 * Put the version in the zplprops 1955 */ 1956 VERIFY(nvlist_add_uint64(zplprops, 1957 zfs_prop_to_name(ZFS_PROP_VERSION), zplver) == 0); 1958 1959 if (norm == ZFS_PROP_UNDEFINED) 1960 VERIFY(zfs_get_zplprop(os, ZFS_PROP_NORMALIZE, &norm) == 0); 1961 VERIFY(nvlist_add_uint64(zplprops, 1962 zfs_prop_to_name(ZFS_PROP_NORMALIZE), norm) == 0); 1963 1964 /* 1965 * If we're normalizing, names must always be valid UTF-8 strings. 1966 */ 1967 if (norm) 1968 u8 = 1; 1969 if (u8 == ZFS_PROP_UNDEFINED) 1970 VERIFY(zfs_get_zplprop(os, ZFS_PROP_UTF8ONLY, &u8) == 0); 1971 VERIFY(nvlist_add_uint64(zplprops, 1972 zfs_prop_to_name(ZFS_PROP_UTF8ONLY), u8) == 0); 1973 1974 if (sense == ZFS_PROP_UNDEFINED) 1975 VERIFY(zfs_get_zplprop(os, ZFS_PROP_CASE, &sense) == 0); 1976 VERIFY(nvlist_add_uint64(zplprops, 1977 zfs_prop_to_name(ZFS_PROP_CASE), sense) == 0); 1978 1979 if (is_ci) 1980 *is_ci = (sense == ZFS_CASE_INSENSITIVE); 1981 1982 return (0); 1983 } 1984 1985 static int 1986 zfs_fill_zplprops(const char *dataset, nvlist_t *createprops, 1987 nvlist_t *zplprops, boolean_t *is_ci) 1988 { 1989 boolean_t fuids_ok = B_TRUE; 1990 uint64_t zplver = ZPL_VERSION; 1991 objset_t *os = NULL; 1992 char parentname[MAXNAMELEN]; 1993 char *cp; 1994 int error; 1995 1996 (void) strlcpy(parentname, dataset, sizeof (parentname)); 1997 cp = strrchr(parentname, '/'); 1998 ASSERT(cp != NULL); 1999 cp[0] = '\0'; 2000 2001 if (zfs_earlier_version(dataset, SPA_VERSION_FUID)) { 2002 zplver = ZPL_VERSION_FUID - 1; 2003 fuids_ok = B_FALSE; 2004 } 2005 2006 /* 2007 * Open parent object set so we can inherit zplprop values. 2008 */ 2009 if ((error = dmu_objset_open(parentname, DMU_OST_ANY, 2010 DS_MODE_USER | DS_MODE_READONLY, &os)) != 0) 2011 return (error); 2012 2013 error = zfs_fill_zplprops_impl(os, zplver, fuids_ok, createprops, 2014 zplprops, is_ci); 2015 dmu_objset_close(os); 2016 return (error); 2017 } 2018 2019 static int 2020 zfs_fill_zplprops_root(uint64_t spa_vers, nvlist_t *createprops, 2021 nvlist_t *zplprops, boolean_t *is_ci) 2022 { 2023 boolean_t fuids_ok = B_TRUE; 2024 uint64_t zplver = ZPL_VERSION; 2025 int error; 2026 2027 if (spa_vers < SPA_VERSION_FUID) { 2028 zplver = ZPL_VERSION_FUID - 1; 2029 fuids_ok = B_FALSE; 2030 } 2031 2032 error = zfs_fill_zplprops_impl(NULL, zplver, fuids_ok, createprops, 2033 zplprops, is_ci); 2034 return (error); 2035 } 2036 2037 /* 2038 * inputs: 2039 * zc_objset_type type of objset to create (fs vs zvol) 2040 * zc_name name of new objset 2041 * zc_value name of snapshot to clone from (may be empty) 2042 * zc_nvlist_src{_size} nvlist of properties to apply 2043 * 2044 * outputs: none 2045 */ 2046 static int 2047 zfs_ioc_create(zfs_cmd_t *zc) 2048 { 2049 objset_t *clone; 2050 int error = 0; 2051 zfs_creat_t zct; 2052 nvlist_t *nvprops = NULL; 2053 void (*cbfunc)(objset_t *os, void *arg, cred_t *cr, dmu_tx_t *tx); 2054 dmu_objset_type_t type = zc->zc_objset_type; 2055 2056 switch (type) { 2057 2058 case DMU_OST_ZFS: 2059 cbfunc = zfs_create_cb; 2060 break; 2061 2062 case DMU_OST_ZVOL: 2063 cbfunc = zvol_create_cb; 2064 break; 2065 2066 default: 2067 cbfunc = NULL; 2068 break; 2069 } 2070 if (strchr(zc->zc_name, '@') || 2071 strchr(zc->zc_name, '%')) 2072 return (EINVAL); 2073 2074 if (zc->zc_nvlist_src != NULL && 2075 (error = get_nvlist(zc->zc_nvlist_src, zc->zc_nvlist_src_size, 2076 &nvprops)) != 0) 2077 return (error); 2078 2079 zct.zct_zplprops = NULL; 2080 zct.zct_props = nvprops; 2081 2082 if (zc->zc_value[0] != '\0') { 2083 /* 2084 * We're creating a clone of an existing snapshot. 2085 */ 2086 zc->zc_value[sizeof (zc->zc_value) - 1] = '\0'; 2087 if (dataset_namecheck(zc->zc_value, NULL, NULL) != 0) { 2088 nvlist_free(nvprops); 2089 return (EINVAL); 2090 } 2091 2092 error = dmu_objset_open(zc->zc_value, type, 2093 DS_MODE_USER | DS_MODE_READONLY, &clone); 2094 if (error) { 2095 nvlist_free(nvprops); 2096 return (error); 2097 } 2098 2099 error = dmu_objset_create(zc->zc_name, type, clone, 0, 2100 NULL, NULL); 2101 if (error) { 2102 dmu_objset_close(clone); 2103 nvlist_free(nvprops); 2104 return (error); 2105 } 2106 dmu_objset_close(clone); 2107 } else { 2108 boolean_t is_insensitive = B_FALSE; 2109 2110 if (cbfunc == NULL) { 2111 nvlist_free(nvprops); 2112 return (EINVAL); 2113 } 2114 2115 if (type == DMU_OST_ZVOL) { 2116 uint64_t volsize, volblocksize; 2117 2118 if (nvprops == NULL || 2119 nvlist_lookup_uint64(nvprops, 2120 zfs_prop_to_name(ZFS_PROP_VOLSIZE), 2121 &volsize) != 0) { 2122 nvlist_free(nvprops); 2123 return (EINVAL); 2124 } 2125 2126 if ((error = nvlist_lookup_uint64(nvprops, 2127 zfs_prop_to_name(ZFS_PROP_VOLBLOCKSIZE), 2128 &volblocksize)) != 0 && error != ENOENT) { 2129 nvlist_free(nvprops); 2130 return (EINVAL); 2131 } 2132 2133 if (error != 0) 2134 volblocksize = zfs_prop_default_numeric( 2135 ZFS_PROP_VOLBLOCKSIZE); 2136 2137 if ((error = zvol_check_volblocksize( 2138 volblocksize)) != 0 || 2139 (error = zvol_check_volsize(volsize, 2140 volblocksize)) != 0) { 2141 nvlist_free(nvprops); 2142 return (error); 2143 } 2144 } else if (type == DMU_OST_ZFS) { 2145 int error; 2146 2147 /* 2148 * We have to have normalization and 2149 * case-folding flags correct when we do the 2150 * file system creation, so go figure them out 2151 * now. 2152 */ 2153 VERIFY(nvlist_alloc(&zct.zct_zplprops, 2154 NV_UNIQUE_NAME, KM_SLEEP) == 0); 2155 error = zfs_fill_zplprops(zc->zc_name, nvprops, 2156 zct.zct_zplprops, &is_insensitive); 2157 if (error != 0) { 2158 nvlist_free(nvprops); 2159 nvlist_free(zct.zct_zplprops); 2160 return (error); 2161 } 2162 } 2163 error = dmu_objset_create(zc->zc_name, type, NULL, 2164 is_insensitive ? DS_FLAG_CI_DATASET : 0, cbfunc, &zct); 2165 nvlist_free(zct.zct_zplprops); 2166 } 2167 2168 /* 2169 * It would be nice to do this atomically. 2170 */ 2171 if (error == 0) { 2172 if ((error = zfs_set_prop_nvlist(zc->zc_name, nvprops)) != 0) 2173 (void) dmu_objset_destroy(zc->zc_name); 2174 } 2175 nvlist_free(nvprops); 2176 return (error); 2177 } 2178 2179 struct snap_prop_arg { 2180 nvlist_t *nvprops; 2181 const char *snapname; 2182 }; 2183 2184 static int 2185 set_snap_props(char *name, void *arg) 2186 { 2187 struct snap_prop_arg *snpa = arg; 2188 int len = strlen(name) + strlen(snpa->snapname) + 2; 2189 char *buf = kmem_alloc(len, KM_SLEEP); 2190 int err; 2191 2192 (void) snprintf(buf, len, "%s@%s", name, snpa->snapname); 2193 err = zfs_set_prop_nvlist(buf, snpa->nvprops); 2194 if (err) 2195 (void) dmu_objset_destroy(buf); 2196 kmem_free(buf, len); 2197 return (err); 2198 } 2199 2200 /* 2201 * inputs: 2202 * zc_name name of filesystem 2203 * zc_value short name of snapshot 2204 * zc_cookie recursive flag 2205 * 2206 * outputs: none 2207 */ 2208 static int 2209 zfs_ioc_snapshot(zfs_cmd_t *zc) 2210 { 2211 nvlist_t *nvprops = NULL; 2212 int error; 2213 boolean_t recursive = zc->zc_cookie; 2214 2215 if (snapshot_namecheck(zc->zc_value, NULL, NULL) != 0) 2216 return (EINVAL); 2217 2218 if (zc->zc_nvlist_src != NULL && 2219 (error = get_nvlist(zc->zc_nvlist_src, zc->zc_nvlist_src_size, 2220 &nvprops)) != 0) 2221 return (error); 2222 2223 error = dmu_objset_snapshot(zc->zc_name, zc->zc_value, recursive); 2224 2225 /* 2226 * It would be nice to do this atomically. 2227 */ 2228 if (error == 0) { 2229 struct snap_prop_arg snpa; 2230 snpa.nvprops = nvprops; 2231 snpa.snapname = zc->zc_value; 2232 if (recursive) { 2233 error = dmu_objset_find(zc->zc_name, 2234 set_snap_props, &snpa, DS_FIND_CHILDREN); 2235 if (error) { 2236 (void) dmu_snapshots_destroy(zc->zc_name, 2237 zc->zc_value); 2238 } 2239 } else { 2240 error = set_snap_props(zc->zc_name, &snpa); 2241 } 2242 } 2243 nvlist_free(nvprops); 2244 return (error); 2245 } 2246 2247 int 2248 zfs_unmount_snap(char *name, void *arg) 2249 { 2250 vfs_t *vfsp = NULL; 2251 2252 if (arg) { 2253 char *snapname = arg; 2254 int len = strlen(name) + strlen(snapname) + 2; 2255 char *buf = kmem_alloc(len, KM_SLEEP); 2256 2257 (void) strcpy(buf, name); 2258 (void) strcat(buf, "@"); 2259 (void) strcat(buf, snapname); 2260 vfsp = zfs_get_vfs(buf); 2261 kmem_free(buf, len); 2262 } else if (strchr(name, '@')) { 2263 vfsp = zfs_get_vfs(name); 2264 } 2265 2266 if (vfsp) { 2267 /* 2268 * Always force the unmount for snapshots. 2269 */ 2270 int flag = MS_FORCE; 2271 int err; 2272 2273 if ((err = vn_vfswlock(vfsp->vfs_vnodecovered)) != 0) { 2274 VFS_RELE(vfsp); 2275 return (err); 2276 } 2277 VFS_RELE(vfsp); 2278 if ((err = dounmount(vfsp, flag, kcred)) != 0) 2279 return (err); 2280 } 2281 return (0); 2282 } 2283 2284 /* 2285 * inputs: 2286 * zc_name name of filesystem 2287 * zc_value short name of snapshot 2288 * 2289 * outputs: none 2290 */ 2291 static int 2292 zfs_ioc_destroy_snaps(zfs_cmd_t *zc) 2293 { 2294 int err; 2295 2296 if (snapshot_namecheck(zc->zc_value, NULL, NULL) != 0) 2297 return (EINVAL); 2298 err = dmu_objset_find(zc->zc_name, 2299 zfs_unmount_snap, zc->zc_value, DS_FIND_CHILDREN); 2300 if (err) 2301 return (err); 2302 return (dmu_snapshots_destroy(zc->zc_name, zc->zc_value)); 2303 } 2304 2305 /* 2306 * inputs: 2307 * zc_name name of dataset to destroy 2308 * zc_objset_type type of objset 2309 * 2310 * outputs: none 2311 */ 2312 static int 2313 zfs_ioc_destroy(zfs_cmd_t *zc) 2314 { 2315 if (strchr(zc->zc_name, '@') && zc->zc_objset_type == DMU_OST_ZFS) { 2316 int err = zfs_unmount_snap(zc->zc_name, NULL); 2317 if (err) 2318 return (err); 2319 } 2320 2321 return (dmu_objset_destroy(zc->zc_name)); 2322 } 2323 2324 /* 2325 * inputs: 2326 * zc_name name of dataset to rollback (to most recent snapshot) 2327 * 2328 * outputs: none 2329 */ 2330 static int 2331 zfs_ioc_rollback(zfs_cmd_t *zc) 2332 { 2333 objset_t *os; 2334 int error; 2335 zfsvfs_t *zfsvfs = NULL; 2336 2337 /* 2338 * Get the zfsvfs for the receiving objset. There 2339 * won't be one if we're operating on a zvol, if the 2340 * objset doesn't exist yet, or is not mounted. 2341 */ 2342 error = dmu_objset_open(zc->zc_name, DMU_OST_ANY, DS_MODE_USER, &os); 2343 if (error) 2344 return (error); 2345 2346 if (dmu_objset_type(os) == DMU_OST_ZFS) { 2347 mutex_enter(&os->os->os_user_ptr_lock); 2348 zfsvfs = dmu_objset_get_user(os); 2349 if (zfsvfs != NULL) 2350 VFS_HOLD(zfsvfs->z_vfs); 2351 mutex_exit(&os->os->os_user_ptr_lock); 2352 } 2353 2354 if (zfsvfs != NULL) { 2355 char *osname; 2356 int mode; 2357 2358 osname = kmem_alloc(MAXNAMELEN, KM_SLEEP); 2359 error = zfs_suspend_fs(zfsvfs, osname, &mode); 2360 if (error == 0) { 2361 int resume_err; 2362 2363 ASSERT(strcmp(osname, zc->zc_name) == 0); 2364 error = dmu_objset_rollback(os); 2365 resume_err = zfs_resume_fs(zfsvfs, osname, mode); 2366 error = error ? error : resume_err; 2367 } else { 2368 dmu_objset_close(os); 2369 } 2370 kmem_free(osname, MAXNAMELEN); 2371 VFS_RELE(zfsvfs->z_vfs); 2372 } else { 2373 error = dmu_objset_rollback(os); 2374 } 2375 /* Note, the dmu_objset_rollback() releases the objset for us. */ 2376 2377 return (error); 2378 } 2379 2380 /* 2381 * inputs: 2382 * zc_name old name of dataset 2383 * zc_value new name of dataset 2384 * zc_cookie recursive flag (only valid for snapshots) 2385 * 2386 * outputs: none 2387 */ 2388 static int 2389 zfs_ioc_rename(zfs_cmd_t *zc) 2390 { 2391 boolean_t recursive = zc->zc_cookie & 1; 2392 2393 zc->zc_value[sizeof (zc->zc_value) - 1] = '\0'; 2394 if (dataset_namecheck(zc->zc_value, NULL, NULL) != 0 || 2395 strchr(zc->zc_value, '%')) 2396 return (EINVAL); 2397 2398 /* 2399 * Unmount snapshot unless we're doing a recursive rename, 2400 * in which case the dataset code figures out which snapshots 2401 * to unmount. 2402 */ 2403 if (!recursive && strchr(zc->zc_name, '@') != NULL && 2404 zc->zc_objset_type == DMU_OST_ZFS) { 2405 int err = zfs_unmount_snap(zc->zc_name, NULL); 2406 if (err) 2407 return (err); 2408 } 2409 return (dmu_objset_rename(zc->zc_name, zc->zc_value, recursive)); 2410 } 2411 2412 static void 2413 clear_props(char *dataset, nvlist_t *props) 2414 { 2415 zfs_cmd_t *zc; 2416 nvpair_t *prop; 2417 2418 if (props == NULL) 2419 return; 2420 zc = kmem_alloc(sizeof (zfs_cmd_t), KM_SLEEP); 2421 (void) strcpy(zc->zc_name, dataset); 2422 for (prop = nvlist_next_nvpair(props, NULL); prop; 2423 prop = nvlist_next_nvpair(props, prop)) { 2424 (void) strcpy(zc->zc_value, nvpair_name(prop)); 2425 if (zfs_secpolicy_inherit(zc, CRED()) == 0) 2426 (void) zfs_ioc_inherit_prop(zc); 2427 } 2428 kmem_free(zc, sizeof (zfs_cmd_t)); 2429 } 2430 2431 /* 2432 * inputs: 2433 * zc_name name of containing filesystem 2434 * zc_nvlist_src{_size} nvlist of properties to apply 2435 * zc_value name of snapshot to create 2436 * zc_string name of clone origin (if DRR_FLAG_CLONE) 2437 * zc_cookie file descriptor to recv from 2438 * zc_begin_record the BEGIN record of the stream (not byteswapped) 2439 * zc_guid force flag 2440 * 2441 * outputs: 2442 * zc_cookie number of bytes read 2443 */ 2444 static int 2445 zfs_ioc_recv(zfs_cmd_t *zc) 2446 { 2447 file_t *fp; 2448 objset_t *os; 2449 dmu_recv_cookie_t drc; 2450 zfsvfs_t *zfsvfs = NULL; 2451 boolean_t force = (boolean_t)zc->zc_guid; 2452 int error, fd; 2453 offset_t off; 2454 nvlist_t *props = NULL; 2455 nvlist_t *origprops = NULL; 2456 objset_t *origin = NULL; 2457 char *tosnap; 2458 char tofs[ZFS_MAXNAMELEN]; 2459 2460 if (dataset_namecheck(zc->zc_value, NULL, NULL) != 0 || 2461 strchr(zc->zc_value, '@') == NULL || 2462 strchr(zc->zc_value, '%')) 2463 return (EINVAL); 2464 2465 (void) strcpy(tofs, zc->zc_value); 2466 tosnap = strchr(tofs, '@'); 2467 *tosnap = '\0'; 2468 tosnap++; 2469 2470 if (zc->zc_nvlist_src != NULL && 2471 (error = get_nvlist(zc->zc_nvlist_src, zc->zc_nvlist_src_size, 2472 &props)) != 0) 2473 return (error); 2474 2475 fd = zc->zc_cookie; 2476 fp = getf(fd); 2477 if (fp == NULL) { 2478 nvlist_free(props); 2479 return (EBADF); 2480 } 2481 2482 if (dmu_objset_open(tofs, DMU_OST_ANY, 2483 DS_MODE_USER | DS_MODE_READONLY, &os) == 0) { 2484 /* 2485 * Try to get the zfsvfs for the receiving objset. 2486 * There won't be one if we're operating on a zvol, 2487 * if the objset doesn't exist yet, or is not mounted. 2488 */ 2489 mutex_enter(&os->os->os_user_ptr_lock); 2490 if (zfsvfs = dmu_objset_get_user(os)) { 2491 if (!mutex_tryenter(&zfsvfs->z_online_recv_lock)) { 2492 mutex_exit(&os->os->os_user_ptr_lock); 2493 dmu_objset_close(os); 2494 zfsvfs = NULL; 2495 error = EBUSY; 2496 goto out; 2497 } 2498 VFS_HOLD(zfsvfs->z_vfs); 2499 } 2500 mutex_exit(&os->os->os_user_ptr_lock); 2501 2502 /* 2503 * If new properties are supplied, they are to completely 2504 * replace the existing ones, so stash away the existing ones. 2505 */ 2506 if (props) 2507 (void) dsl_prop_get_all(os, &origprops, TRUE); 2508 2509 dmu_objset_close(os); 2510 } 2511 2512 if (zc->zc_string[0]) { 2513 error = dmu_objset_open(zc->zc_string, DMU_OST_ANY, 2514 DS_MODE_USER | DS_MODE_READONLY, &origin); 2515 if (error) 2516 goto out; 2517 } 2518 2519 error = dmu_recv_begin(tofs, tosnap, &zc->zc_begin_record, 2520 force, origin, zfsvfs != NULL, &drc); 2521 if (origin) 2522 dmu_objset_close(origin); 2523 if (error) 2524 goto out; 2525 2526 /* 2527 * Reset properties. We do this before we receive the stream 2528 * so that the properties are applied to the new data. 2529 */ 2530 if (props) { 2531 clear_props(tofs, origprops); 2532 /* 2533 * XXX - Note, this is all-or-nothing; should be best-effort. 2534 */ 2535 (void) zfs_set_prop_nvlist(tofs, props); 2536 } 2537 2538 off = fp->f_offset; 2539 error = dmu_recv_stream(&drc, fp->f_vnode, &off); 2540 2541 if (error == 0 && zfsvfs) { 2542 char *osname; 2543 int mode; 2544 2545 /* online recv */ 2546 osname = kmem_alloc(MAXNAMELEN, KM_SLEEP); 2547 error = zfs_suspend_fs(zfsvfs, osname, &mode); 2548 if (error == 0) { 2549 int resume_err; 2550 2551 error = dmu_recv_end(&drc); 2552 resume_err = zfs_resume_fs(zfsvfs, osname, mode); 2553 error = error ? error : resume_err; 2554 } else { 2555 dmu_recv_abort_cleanup(&drc); 2556 } 2557 kmem_free(osname, MAXNAMELEN); 2558 } else if (error == 0) { 2559 error = dmu_recv_end(&drc); 2560 } 2561 2562 zc->zc_cookie = off - fp->f_offset; 2563 if (VOP_SEEK(fp->f_vnode, fp->f_offset, &off, NULL) == 0) 2564 fp->f_offset = off; 2565 2566 /* 2567 * On error, restore the original props. 2568 */ 2569 if (error && props) { 2570 clear_props(tofs, props); 2571 (void) zfs_set_prop_nvlist(tofs, origprops); 2572 } 2573 out: 2574 if (zfsvfs) { 2575 mutex_exit(&zfsvfs->z_online_recv_lock); 2576 VFS_RELE(zfsvfs->z_vfs); 2577 } 2578 nvlist_free(props); 2579 nvlist_free(origprops); 2580 releasef(fd); 2581 return (error); 2582 } 2583 2584 /* 2585 * inputs: 2586 * zc_name name of snapshot to send 2587 * zc_value short name of incremental fromsnap (may be empty) 2588 * zc_cookie file descriptor to send stream to 2589 * zc_obj fromorigin flag (mutually exclusive with zc_value) 2590 * 2591 * outputs: none 2592 */ 2593 static int 2594 zfs_ioc_send(zfs_cmd_t *zc) 2595 { 2596 objset_t *fromsnap = NULL; 2597 objset_t *tosnap; 2598 file_t *fp; 2599 int error; 2600 offset_t off; 2601 2602 error = dmu_objset_open(zc->zc_name, DMU_OST_ANY, 2603 DS_MODE_USER | DS_MODE_READONLY, &tosnap); 2604 if (error) 2605 return (error); 2606 2607 if (zc->zc_value[0] != '\0') { 2608 char *buf; 2609 char *cp; 2610 2611 buf = kmem_alloc(MAXPATHLEN, KM_SLEEP); 2612 (void) strncpy(buf, zc->zc_name, MAXPATHLEN); 2613 cp = strchr(buf, '@'); 2614 if (cp) 2615 *(cp+1) = 0; 2616 (void) strncat(buf, zc->zc_value, MAXPATHLEN); 2617 error = dmu_objset_open(buf, DMU_OST_ANY, 2618 DS_MODE_USER | DS_MODE_READONLY, &fromsnap); 2619 kmem_free(buf, MAXPATHLEN); 2620 if (error) { 2621 dmu_objset_close(tosnap); 2622 return (error); 2623 } 2624 } 2625 2626 fp = getf(zc->zc_cookie); 2627 if (fp == NULL) { 2628 dmu_objset_close(tosnap); 2629 if (fromsnap) 2630 dmu_objset_close(fromsnap); 2631 return (EBADF); 2632 } 2633 2634 off = fp->f_offset; 2635 error = dmu_sendbackup(tosnap, fromsnap, zc->zc_obj, fp->f_vnode, &off); 2636 2637 if (VOP_SEEK(fp->f_vnode, fp->f_offset, &off, NULL) == 0) 2638 fp->f_offset = off; 2639 releasef(zc->zc_cookie); 2640 if (fromsnap) 2641 dmu_objset_close(fromsnap); 2642 dmu_objset_close(tosnap); 2643 return (error); 2644 } 2645 2646 static int 2647 zfs_ioc_inject_fault(zfs_cmd_t *zc) 2648 { 2649 int id, error; 2650 2651 error = zio_inject_fault(zc->zc_name, (int)zc->zc_guid, &id, 2652 &zc->zc_inject_record); 2653 2654 if (error == 0) 2655 zc->zc_guid = (uint64_t)id; 2656 2657 return (error); 2658 } 2659 2660 static int 2661 zfs_ioc_clear_fault(zfs_cmd_t *zc) 2662 { 2663 return (zio_clear_fault((int)zc->zc_guid)); 2664 } 2665 2666 static int 2667 zfs_ioc_inject_list_next(zfs_cmd_t *zc) 2668 { 2669 int id = (int)zc->zc_guid; 2670 int error; 2671 2672 error = zio_inject_list_next(&id, zc->zc_name, sizeof (zc->zc_name), 2673 &zc->zc_inject_record); 2674 2675 zc->zc_guid = id; 2676 2677 return (error); 2678 } 2679 2680 static int 2681 zfs_ioc_error_log(zfs_cmd_t *zc) 2682 { 2683 spa_t *spa; 2684 int error; 2685 size_t count = (size_t)zc->zc_nvlist_dst_size; 2686 2687 if ((error = spa_open(zc->zc_name, &spa, FTAG)) != 0) 2688 return (error); 2689 2690 error = spa_get_errlog(spa, (void *)(uintptr_t)zc->zc_nvlist_dst, 2691 &count); 2692 if (error == 0) 2693 zc->zc_nvlist_dst_size = count; 2694 else 2695 zc->zc_nvlist_dst_size = spa_get_errlog_size(spa); 2696 2697 spa_close(spa, FTAG); 2698 2699 return (error); 2700 } 2701 2702 static int 2703 zfs_ioc_clear(zfs_cmd_t *zc) 2704 { 2705 spa_t *spa; 2706 vdev_t *vd; 2707 int error; 2708 2709 /* 2710 * On zpool clear we also fix up missing slogs 2711 */ 2712 mutex_enter(&spa_namespace_lock); 2713 spa = spa_lookup(zc->zc_name); 2714 if (spa == NULL) { 2715 mutex_exit(&spa_namespace_lock); 2716 return (EIO); 2717 } 2718 if (spa->spa_log_state == SPA_LOG_MISSING) { 2719 /* we need to let spa_open/spa_load clear the chains */ 2720 spa->spa_log_state = SPA_LOG_CLEAR; 2721 } 2722 mutex_exit(&spa_namespace_lock); 2723 2724 if ((error = spa_open(zc->zc_name, &spa, FTAG)) != 0) 2725 return (error); 2726 2727 spa_vdev_state_enter(spa); 2728 2729 if (zc->zc_guid == 0) { 2730 vd = NULL; 2731 } else { 2732 vd = spa_lookup_by_guid(spa, zc->zc_guid, B_TRUE); 2733 if (vd == NULL) { 2734 (void) spa_vdev_state_exit(spa, NULL, ENODEV); 2735 spa_close(spa, FTAG); 2736 return (ENODEV); 2737 } 2738 } 2739 2740 vdev_clear(spa, vd); 2741 2742 (void) spa_vdev_state_exit(spa, NULL, 0); 2743 2744 /* 2745 * Resume any suspended I/Os. 2746 */ 2747 zio_resume(spa); 2748 2749 spa_close(spa, FTAG); 2750 2751 return (0); 2752 } 2753 2754 /* 2755 * inputs: 2756 * zc_name name of filesystem 2757 * zc_value name of origin snapshot 2758 * 2759 * outputs: none 2760 */ 2761 static int 2762 zfs_ioc_promote(zfs_cmd_t *zc) 2763 { 2764 char *cp; 2765 2766 /* 2767 * We don't need to unmount *all* the origin fs's snapshots, but 2768 * it's easier. 2769 */ 2770 cp = strchr(zc->zc_value, '@'); 2771 if (cp) 2772 *cp = '\0'; 2773 (void) dmu_objset_find(zc->zc_value, 2774 zfs_unmount_snap, NULL, DS_FIND_SNAPSHOTS); 2775 return (dsl_dataset_promote(zc->zc_name)); 2776 } 2777 2778 /* 2779 * We don't want to have a hard dependency 2780 * against some special symbols in sharefs 2781 * nfs, and smbsrv. Determine them if needed when 2782 * the first file system is shared. 2783 * Neither sharefs, nfs or smbsrv are unloadable modules. 2784 */ 2785 int (*znfsexport_fs)(void *arg); 2786 int (*zshare_fs)(enum sharefs_sys_op, share_t *, uint32_t); 2787 int (*zsmbexport_fs)(void *arg, boolean_t add_share); 2788 2789 int zfs_nfsshare_inited; 2790 int zfs_smbshare_inited; 2791 2792 ddi_modhandle_t nfs_mod; 2793 ddi_modhandle_t sharefs_mod; 2794 ddi_modhandle_t smbsrv_mod; 2795 kmutex_t zfs_share_lock; 2796 2797 static int 2798 zfs_init_sharefs() 2799 { 2800 int error; 2801 2802 ASSERT(MUTEX_HELD(&zfs_share_lock)); 2803 /* Both NFS and SMB shares also require sharetab support. */ 2804 if (sharefs_mod == NULL && ((sharefs_mod = 2805 ddi_modopen("fs/sharefs", 2806 KRTLD_MODE_FIRST, &error)) == NULL)) { 2807 return (ENOSYS); 2808 } 2809 if (zshare_fs == NULL && ((zshare_fs = 2810 (int (*)(enum sharefs_sys_op, share_t *, uint32_t)) 2811 ddi_modsym(sharefs_mod, "sharefs_impl", &error)) == NULL)) { 2812 return (ENOSYS); 2813 } 2814 return (0); 2815 } 2816 2817 static int 2818 zfs_ioc_share(zfs_cmd_t *zc) 2819 { 2820 int error; 2821 int opcode; 2822 2823 switch (zc->zc_share.z_sharetype) { 2824 case ZFS_SHARE_NFS: 2825 case ZFS_UNSHARE_NFS: 2826 if (zfs_nfsshare_inited == 0) { 2827 mutex_enter(&zfs_share_lock); 2828 if (nfs_mod == NULL && ((nfs_mod = ddi_modopen("fs/nfs", 2829 KRTLD_MODE_FIRST, &error)) == NULL)) { 2830 mutex_exit(&zfs_share_lock); 2831 return (ENOSYS); 2832 } 2833 if (znfsexport_fs == NULL && 2834 ((znfsexport_fs = (int (*)(void *)) 2835 ddi_modsym(nfs_mod, 2836 "nfs_export", &error)) == NULL)) { 2837 mutex_exit(&zfs_share_lock); 2838 return (ENOSYS); 2839 } 2840 error = zfs_init_sharefs(); 2841 if (error) { 2842 mutex_exit(&zfs_share_lock); 2843 return (ENOSYS); 2844 } 2845 zfs_nfsshare_inited = 1; 2846 mutex_exit(&zfs_share_lock); 2847 } 2848 break; 2849 case ZFS_SHARE_SMB: 2850 case ZFS_UNSHARE_SMB: 2851 if (zfs_smbshare_inited == 0) { 2852 mutex_enter(&zfs_share_lock); 2853 if (smbsrv_mod == NULL && ((smbsrv_mod = 2854 ddi_modopen("drv/smbsrv", 2855 KRTLD_MODE_FIRST, &error)) == NULL)) { 2856 mutex_exit(&zfs_share_lock); 2857 return (ENOSYS); 2858 } 2859 if (zsmbexport_fs == NULL && ((zsmbexport_fs = 2860 (int (*)(void *, boolean_t))ddi_modsym(smbsrv_mod, 2861 "smb_server_share", &error)) == NULL)) { 2862 mutex_exit(&zfs_share_lock); 2863 return (ENOSYS); 2864 } 2865 error = zfs_init_sharefs(); 2866 if (error) { 2867 mutex_exit(&zfs_share_lock); 2868 return (ENOSYS); 2869 } 2870 zfs_smbshare_inited = 1; 2871 mutex_exit(&zfs_share_lock); 2872 } 2873 break; 2874 default: 2875 return (EINVAL); 2876 } 2877 2878 switch (zc->zc_share.z_sharetype) { 2879 case ZFS_SHARE_NFS: 2880 case ZFS_UNSHARE_NFS: 2881 if (error = 2882 znfsexport_fs((void *) 2883 (uintptr_t)zc->zc_share.z_exportdata)) 2884 return (error); 2885 break; 2886 case ZFS_SHARE_SMB: 2887 case ZFS_UNSHARE_SMB: 2888 if (error = zsmbexport_fs((void *) 2889 (uintptr_t)zc->zc_share.z_exportdata, 2890 zc->zc_share.z_sharetype == ZFS_SHARE_SMB ? 2891 B_TRUE : B_FALSE)) { 2892 return (error); 2893 } 2894 break; 2895 } 2896 2897 opcode = (zc->zc_share.z_sharetype == ZFS_SHARE_NFS || 2898 zc->zc_share.z_sharetype == ZFS_SHARE_SMB) ? 2899 SHAREFS_ADD : SHAREFS_REMOVE; 2900 2901 /* 2902 * Add or remove share from sharetab 2903 */ 2904 error = zshare_fs(opcode, 2905 (void *)(uintptr_t)zc->zc_share.z_sharedata, 2906 zc->zc_share.z_sharemax); 2907 2908 return (error); 2909 2910 } 2911 2912 /* 2913 * pool create, destroy, and export don't log the history as part of 2914 * zfsdev_ioctl, but rather zfs_ioc_pool_create, and zfs_ioc_pool_export 2915 * do the logging of those commands. 2916 */ 2917 static zfs_ioc_vec_t zfs_ioc_vec[] = { 2918 { zfs_ioc_pool_create, zfs_secpolicy_config, POOL_NAME, B_FALSE }, 2919 { zfs_ioc_pool_destroy, zfs_secpolicy_config, POOL_NAME, B_FALSE }, 2920 { zfs_ioc_pool_import, zfs_secpolicy_config, POOL_NAME, B_TRUE }, 2921 { zfs_ioc_pool_export, zfs_secpolicy_config, POOL_NAME, B_FALSE }, 2922 { zfs_ioc_pool_configs, zfs_secpolicy_none, NO_NAME, B_FALSE }, 2923 { zfs_ioc_pool_stats, zfs_secpolicy_read, POOL_NAME, B_FALSE }, 2924 { zfs_ioc_pool_tryimport, zfs_secpolicy_config, NO_NAME, B_FALSE }, 2925 { zfs_ioc_pool_scrub, zfs_secpolicy_config, POOL_NAME, B_TRUE }, 2926 { zfs_ioc_pool_freeze, zfs_secpolicy_config, NO_NAME, B_FALSE }, 2927 { zfs_ioc_pool_upgrade, zfs_secpolicy_config, POOL_NAME, B_TRUE }, 2928 { zfs_ioc_pool_get_history, zfs_secpolicy_config, POOL_NAME, B_FALSE }, 2929 { zfs_ioc_vdev_add, zfs_secpolicy_config, POOL_NAME, B_TRUE }, 2930 { zfs_ioc_vdev_remove, zfs_secpolicy_config, POOL_NAME, B_TRUE }, 2931 { zfs_ioc_vdev_set_state, zfs_secpolicy_config, POOL_NAME, B_TRUE }, 2932 { zfs_ioc_vdev_attach, zfs_secpolicy_config, POOL_NAME, B_TRUE }, 2933 { zfs_ioc_vdev_detach, zfs_secpolicy_config, POOL_NAME, B_TRUE }, 2934 { zfs_ioc_vdev_setpath, zfs_secpolicy_config, POOL_NAME, B_FALSE }, 2935 { zfs_ioc_objset_stats, zfs_secpolicy_read, DATASET_NAME, B_FALSE }, 2936 { zfs_ioc_objset_zplprops, zfs_secpolicy_read, DATASET_NAME, B_FALSE }, 2937 { zfs_ioc_dataset_list_next, zfs_secpolicy_read, 2938 DATASET_NAME, B_FALSE }, 2939 { zfs_ioc_snapshot_list_next, zfs_secpolicy_read, 2940 DATASET_NAME, B_FALSE }, 2941 { zfs_ioc_set_prop, zfs_secpolicy_none, DATASET_NAME, B_TRUE }, 2942 { zfs_ioc_create_minor, zfs_secpolicy_minor, DATASET_NAME, B_FALSE }, 2943 { zfs_ioc_remove_minor, zfs_secpolicy_minor, DATASET_NAME, B_FALSE }, 2944 { zfs_ioc_create, zfs_secpolicy_create, DATASET_NAME, B_TRUE }, 2945 { zfs_ioc_destroy, zfs_secpolicy_destroy, DATASET_NAME, B_TRUE }, 2946 { zfs_ioc_rollback, zfs_secpolicy_rollback, DATASET_NAME, B_TRUE }, 2947 { zfs_ioc_rename, zfs_secpolicy_rename, DATASET_NAME, B_TRUE }, 2948 { zfs_ioc_recv, zfs_secpolicy_receive, DATASET_NAME, B_TRUE }, 2949 { zfs_ioc_send, zfs_secpolicy_send, DATASET_NAME, B_TRUE }, 2950 { zfs_ioc_inject_fault, zfs_secpolicy_inject, NO_NAME, B_FALSE }, 2951 { zfs_ioc_clear_fault, zfs_secpolicy_inject, NO_NAME, B_FALSE }, 2952 { zfs_ioc_inject_list_next, zfs_secpolicy_inject, NO_NAME, B_FALSE }, 2953 { zfs_ioc_error_log, zfs_secpolicy_inject, POOL_NAME, B_FALSE }, 2954 { zfs_ioc_clear, zfs_secpolicy_config, POOL_NAME, B_TRUE }, 2955 { zfs_ioc_promote, zfs_secpolicy_promote, DATASET_NAME, B_TRUE }, 2956 { zfs_ioc_destroy_snaps, zfs_secpolicy_destroy, DATASET_NAME, B_TRUE }, 2957 { zfs_ioc_snapshot, zfs_secpolicy_snapshot, DATASET_NAME, B_TRUE }, 2958 { zfs_ioc_dsobj_to_dsname, zfs_secpolicy_config, POOL_NAME, B_FALSE }, 2959 { zfs_ioc_obj_to_path, zfs_secpolicy_config, NO_NAME, B_FALSE }, 2960 { zfs_ioc_pool_set_props, zfs_secpolicy_config, POOL_NAME, B_TRUE }, 2961 { zfs_ioc_pool_get_props, zfs_secpolicy_read, POOL_NAME, B_FALSE }, 2962 { zfs_ioc_set_fsacl, zfs_secpolicy_fsacl, DATASET_NAME, B_TRUE }, 2963 { zfs_ioc_get_fsacl, zfs_secpolicy_read, DATASET_NAME, B_FALSE }, 2964 { zfs_ioc_iscsi_perm_check, zfs_secpolicy_iscsi, 2965 DATASET_NAME, B_FALSE }, 2966 { zfs_ioc_share, zfs_secpolicy_share, DATASET_NAME, B_FALSE }, 2967 { zfs_ioc_inherit_prop, zfs_secpolicy_inherit, DATASET_NAME, B_TRUE }, 2968 }; 2969 2970 static int 2971 zfsdev_ioctl(dev_t dev, int cmd, intptr_t arg, int flag, cred_t *cr, int *rvalp) 2972 { 2973 zfs_cmd_t *zc; 2974 uint_t vec; 2975 int error, rc; 2976 2977 if (getminor(dev) != 0) 2978 return (zvol_ioctl(dev, cmd, arg, flag, cr, rvalp)); 2979 2980 vec = cmd - ZFS_IOC; 2981 ASSERT3U(getmajor(dev), ==, ddi_driver_major(zfs_dip)); 2982 2983 if (vec >= sizeof (zfs_ioc_vec) / sizeof (zfs_ioc_vec[0])) 2984 return (EINVAL); 2985 2986 zc = kmem_zalloc(sizeof (zfs_cmd_t), KM_SLEEP); 2987 2988 error = xcopyin((void *)arg, zc, sizeof (zfs_cmd_t)); 2989 2990 if (error == 0) 2991 error = zfs_ioc_vec[vec].zvec_secpolicy(zc, cr); 2992 2993 /* 2994 * Ensure that all pool/dataset names are valid before we pass down to 2995 * the lower layers. 2996 */ 2997 if (error == 0) { 2998 zc->zc_name[sizeof (zc->zc_name) - 1] = '\0'; 2999 switch (zfs_ioc_vec[vec].zvec_namecheck) { 3000 case POOL_NAME: 3001 if (pool_namecheck(zc->zc_name, NULL, NULL) != 0) 3002 error = EINVAL; 3003 break; 3004 3005 case DATASET_NAME: 3006 if (dataset_namecheck(zc->zc_name, NULL, NULL) != 0) 3007 error = EINVAL; 3008 break; 3009 3010 case NO_NAME: 3011 break; 3012 } 3013 } 3014 3015 if (error == 0) 3016 error = zfs_ioc_vec[vec].zvec_func(zc); 3017 3018 rc = xcopyout(zc, (void *)arg, sizeof (zfs_cmd_t)); 3019 if (error == 0) { 3020 error = rc; 3021 if (zfs_ioc_vec[vec].zvec_his_log == B_TRUE) 3022 zfs_log_history(zc); 3023 } 3024 3025 kmem_free(zc, sizeof (zfs_cmd_t)); 3026 return (error); 3027 } 3028 3029 static int 3030 zfs_attach(dev_info_t *dip, ddi_attach_cmd_t cmd) 3031 { 3032 if (cmd != DDI_ATTACH) 3033 return (DDI_FAILURE); 3034 3035 if (ddi_create_minor_node(dip, "zfs", S_IFCHR, 0, 3036 DDI_PSEUDO, 0) == DDI_FAILURE) 3037 return (DDI_FAILURE); 3038 3039 zfs_dip = dip; 3040 3041 ddi_report_dev(dip); 3042 3043 return (DDI_SUCCESS); 3044 } 3045 3046 static int 3047 zfs_detach(dev_info_t *dip, ddi_detach_cmd_t cmd) 3048 { 3049 if (spa_busy() || zfs_busy() || zvol_busy()) 3050 return (DDI_FAILURE); 3051 3052 if (cmd != DDI_DETACH) 3053 return (DDI_FAILURE); 3054 3055 zfs_dip = NULL; 3056 3057 ddi_prop_remove_all(dip); 3058 ddi_remove_minor_node(dip, NULL); 3059 3060 return (DDI_SUCCESS); 3061 } 3062 3063 /*ARGSUSED*/ 3064 static int 3065 zfs_info(dev_info_t *dip, ddi_info_cmd_t infocmd, void *arg, void **result) 3066 { 3067 switch (infocmd) { 3068 case DDI_INFO_DEVT2DEVINFO: 3069 *result = zfs_dip; 3070 return (DDI_SUCCESS); 3071 3072 case DDI_INFO_DEVT2INSTANCE: 3073 *result = (void *)0; 3074 return (DDI_SUCCESS); 3075 } 3076 3077 return (DDI_FAILURE); 3078 } 3079 3080 /* 3081 * OK, so this is a little weird. 3082 * 3083 * /dev/zfs is the control node, i.e. minor 0. 3084 * /dev/zvol/[r]dsk/pool/dataset are the zvols, minor > 0. 3085 * 3086 * /dev/zfs has basically nothing to do except serve up ioctls, 3087 * so most of the standard driver entry points are in zvol.c. 3088 */ 3089 static struct cb_ops zfs_cb_ops = { 3090 zvol_open, /* open */ 3091 zvol_close, /* close */ 3092 zvol_strategy, /* strategy */ 3093 nodev, /* print */ 3094 zvol_dump, /* dump */ 3095 zvol_read, /* read */ 3096 zvol_write, /* write */ 3097 zfsdev_ioctl, /* ioctl */ 3098 nodev, /* devmap */ 3099 nodev, /* mmap */ 3100 nodev, /* segmap */ 3101 nochpoll, /* poll */ 3102 ddi_prop_op, /* prop_op */ 3103 NULL, /* streamtab */ 3104 D_NEW | D_MP | D_64BIT, /* Driver compatibility flag */ 3105 CB_REV, /* version */ 3106 nodev, /* async read */ 3107 nodev, /* async write */ 3108 }; 3109 3110 static struct dev_ops zfs_dev_ops = { 3111 DEVO_REV, /* version */ 3112 0, /* refcnt */ 3113 zfs_info, /* info */ 3114 nulldev, /* identify */ 3115 nulldev, /* probe */ 3116 zfs_attach, /* attach */ 3117 zfs_detach, /* detach */ 3118 nodev, /* reset */ 3119 &zfs_cb_ops, /* driver operations */ 3120 NULL, /* no bus operations */ 3121 NULL, /* power */ 3122 ddi_quiesce_not_needed, /* quiesce */ 3123 }; 3124 3125 static struct modldrv zfs_modldrv = { 3126 &mod_driverops, 3127 "ZFS storage pool", 3128 &zfs_dev_ops 3129 }; 3130 3131 static struct modlinkage modlinkage = { 3132 MODREV_1, 3133 (void *)&zfs_modlfs, 3134 (void *)&zfs_modldrv, 3135 NULL 3136 }; 3137 3138 3139 uint_t zfs_fsyncer_key; 3140 extern uint_t rrw_tsd_key; 3141 3142 int 3143 _init(void) 3144 { 3145 int error; 3146 3147 spa_init(FREAD | FWRITE); 3148 zfs_init(); 3149 zvol_init(); 3150 3151 if ((error = mod_install(&modlinkage)) != 0) { 3152 zvol_fini(); 3153 zfs_fini(); 3154 spa_fini(); 3155 return (error); 3156 } 3157 3158 tsd_create(&zfs_fsyncer_key, NULL); 3159 tsd_create(&rrw_tsd_key, NULL); 3160 3161 error = ldi_ident_from_mod(&modlinkage, &zfs_li); 3162 ASSERT(error == 0); 3163 mutex_init(&zfs_share_lock, NULL, MUTEX_DEFAULT, NULL); 3164 3165 return (0); 3166 } 3167 3168 int 3169 _fini(void) 3170 { 3171 int error; 3172 3173 if (spa_busy() || zfs_busy() || zvol_busy() || zio_injection_enabled) 3174 return (EBUSY); 3175 3176 if ((error = mod_remove(&modlinkage)) != 0) 3177 return (error); 3178 3179 zvol_fini(); 3180 zfs_fini(); 3181 spa_fini(); 3182 if (zfs_nfsshare_inited) 3183 (void) ddi_modclose(nfs_mod); 3184 if (zfs_smbshare_inited) 3185 (void) ddi_modclose(smbsrv_mod); 3186 if (zfs_nfsshare_inited || zfs_smbshare_inited) 3187 (void) ddi_modclose(sharefs_mod); 3188 3189 tsd_destroy(&zfs_fsyncer_key); 3190 ldi_ident_release(zfs_li); 3191 zfs_li = NULL; 3192 mutex_destroy(&zfs_share_lock); 3193 3194 return (error); 3195 } 3196 3197 int 3198 _info(struct modinfo *modinfop) 3199 { 3200 return (mod_info(&modlinkage, modinfop)); 3201 } 3202