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