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 boolean_t hardforce = (boolean_t)zc->zc_guid; 860 861 zfs_log_history(zc); 862 error = spa_export(zc->zc_name, NULL, force, hardforce); 863 return (error); 864 } 865 866 static int 867 zfs_ioc_pool_configs(zfs_cmd_t *zc) 868 { 869 nvlist_t *configs; 870 int error; 871 872 if ((configs = spa_all_configs(&zc->zc_cookie)) == NULL) 873 return (EEXIST); 874 875 error = put_nvlist(zc, configs); 876 877 nvlist_free(configs); 878 879 return (error); 880 } 881 882 static int 883 zfs_ioc_pool_stats(zfs_cmd_t *zc) 884 { 885 nvlist_t *config; 886 int error; 887 int ret = 0; 888 889 error = spa_get_stats(zc->zc_name, &config, zc->zc_value, 890 sizeof (zc->zc_value)); 891 892 if (config != NULL) { 893 ret = put_nvlist(zc, config); 894 nvlist_free(config); 895 896 /* 897 * The config may be present even if 'error' is non-zero. 898 * In this case we return success, and preserve the real errno 899 * in 'zc_cookie'. 900 */ 901 zc->zc_cookie = error; 902 } else { 903 ret = error; 904 } 905 906 return (ret); 907 } 908 909 /* 910 * Try to import the given pool, returning pool stats as appropriate so that 911 * user land knows which devices are available and overall pool health. 912 */ 913 static int 914 zfs_ioc_pool_tryimport(zfs_cmd_t *zc) 915 { 916 nvlist_t *tryconfig, *config; 917 int error; 918 919 if ((error = get_nvlist(zc->zc_nvlist_conf, zc->zc_nvlist_conf_size, 920 &tryconfig)) != 0) 921 return (error); 922 923 config = spa_tryimport(tryconfig); 924 925 nvlist_free(tryconfig); 926 927 if (config == NULL) 928 return (EINVAL); 929 930 error = put_nvlist(zc, config); 931 nvlist_free(config); 932 933 return (error); 934 } 935 936 static int 937 zfs_ioc_pool_scrub(zfs_cmd_t *zc) 938 { 939 spa_t *spa; 940 int error; 941 942 if ((error = spa_open(zc->zc_name, &spa, FTAG)) != 0) 943 return (error); 944 945 error = spa_scrub(spa, zc->zc_cookie); 946 947 spa_close(spa, FTAG); 948 949 return (error); 950 } 951 952 static int 953 zfs_ioc_pool_freeze(zfs_cmd_t *zc) 954 { 955 spa_t *spa; 956 int error; 957 958 error = spa_open(zc->zc_name, &spa, FTAG); 959 if (error == 0) { 960 spa_freeze(spa); 961 spa_close(spa, FTAG); 962 } 963 return (error); 964 } 965 966 static int 967 zfs_ioc_pool_upgrade(zfs_cmd_t *zc) 968 { 969 spa_t *spa; 970 int error; 971 972 if ((error = spa_open(zc->zc_name, &spa, FTAG)) != 0) 973 return (error); 974 975 if (zc->zc_cookie < spa_version(spa) || zc->zc_cookie > SPA_VERSION) { 976 spa_close(spa, FTAG); 977 return (EINVAL); 978 } 979 980 spa_upgrade(spa, zc->zc_cookie); 981 spa_close(spa, FTAG); 982 983 return (error); 984 } 985 986 static int 987 zfs_ioc_pool_get_history(zfs_cmd_t *zc) 988 { 989 spa_t *spa; 990 char *hist_buf; 991 uint64_t size; 992 int error; 993 994 if ((size = zc->zc_history_len) == 0) 995 return (EINVAL); 996 997 if ((error = spa_open(zc->zc_name, &spa, FTAG)) != 0) 998 return (error); 999 1000 if (spa_version(spa) < SPA_VERSION_ZPOOL_HISTORY) { 1001 spa_close(spa, FTAG); 1002 return (ENOTSUP); 1003 } 1004 1005 hist_buf = kmem_alloc(size, KM_SLEEP); 1006 if ((error = spa_history_get(spa, &zc->zc_history_offset, 1007 &zc->zc_history_len, hist_buf)) == 0) { 1008 error = xcopyout(hist_buf, 1009 (char *)(uintptr_t)zc->zc_history, 1010 zc->zc_history_len); 1011 } 1012 1013 spa_close(spa, FTAG); 1014 kmem_free(hist_buf, size); 1015 return (error); 1016 } 1017 1018 static int 1019 zfs_ioc_dsobj_to_dsname(zfs_cmd_t *zc) 1020 { 1021 int error; 1022 1023 if (error = dsl_dsobj_to_dsname(zc->zc_name, zc->zc_obj, zc->zc_value)) 1024 return (error); 1025 1026 return (0); 1027 } 1028 1029 static int 1030 zfs_ioc_obj_to_path(zfs_cmd_t *zc) 1031 { 1032 objset_t *osp; 1033 int error; 1034 1035 if ((error = dmu_objset_open(zc->zc_name, DMU_OST_ZFS, 1036 DS_MODE_USER | DS_MODE_READONLY, &osp)) != 0) 1037 return (error); 1038 error = zfs_obj_to_path(osp, zc->zc_obj, zc->zc_value, 1039 sizeof (zc->zc_value)); 1040 dmu_objset_close(osp); 1041 1042 return (error); 1043 } 1044 1045 static int 1046 zfs_ioc_vdev_add(zfs_cmd_t *zc) 1047 { 1048 spa_t *spa; 1049 int error; 1050 nvlist_t *config, **l2cache, **spares; 1051 uint_t nl2cache = 0, nspares = 0; 1052 1053 error = spa_open(zc->zc_name, &spa, FTAG); 1054 if (error != 0) 1055 return (error); 1056 1057 error = get_nvlist(zc->zc_nvlist_conf, zc->zc_nvlist_conf_size, 1058 &config); 1059 (void) nvlist_lookup_nvlist_array(config, ZPOOL_CONFIG_L2CACHE, 1060 &l2cache, &nl2cache); 1061 1062 (void) nvlist_lookup_nvlist_array(config, ZPOOL_CONFIG_SPARES, 1063 &spares, &nspares); 1064 1065 /* 1066 * A root pool with concatenated devices is not supported. 1067 * Thus, can not add a device to a root pool. 1068 * 1069 * Intent log device can not be added to a rootpool because 1070 * during mountroot, zil is replayed, a seperated log device 1071 * can not be accessed during the mountroot time. 1072 * 1073 * l2cache and spare devices are ok to be added to a rootpool. 1074 */ 1075 if (spa->spa_bootfs != 0 && nl2cache == 0 && nspares == 0) { 1076 spa_close(spa, FTAG); 1077 return (EDOM); 1078 } 1079 1080 if (error == 0) { 1081 error = spa_vdev_add(spa, config); 1082 nvlist_free(config); 1083 } 1084 spa_close(spa, FTAG); 1085 return (error); 1086 } 1087 1088 static int 1089 zfs_ioc_vdev_remove(zfs_cmd_t *zc) 1090 { 1091 spa_t *spa; 1092 int error; 1093 1094 error = spa_open(zc->zc_name, &spa, FTAG); 1095 if (error != 0) 1096 return (error); 1097 error = spa_vdev_remove(spa, zc->zc_guid, B_FALSE); 1098 spa_close(spa, FTAG); 1099 return (error); 1100 } 1101 1102 static int 1103 zfs_ioc_vdev_set_state(zfs_cmd_t *zc) 1104 { 1105 spa_t *spa; 1106 int error; 1107 vdev_state_t newstate = VDEV_STATE_UNKNOWN; 1108 1109 if ((error = spa_open(zc->zc_name, &spa, FTAG)) != 0) 1110 return (error); 1111 switch (zc->zc_cookie) { 1112 case VDEV_STATE_ONLINE: 1113 error = vdev_online(spa, zc->zc_guid, zc->zc_obj, &newstate); 1114 break; 1115 1116 case VDEV_STATE_OFFLINE: 1117 error = vdev_offline(spa, zc->zc_guid, zc->zc_obj); 1118 break; 1119 1120 case VDEV_STATE_FAULTED: 1121 error = vdev_fault(spa, zc->zc_guid); 1122 break; 1123 1124 case VDEV_STATE_DEGRADED: 1125 error = vdev_degrade(spa, zc->zc_guid); 1126 break; 1127 1128 default: 1129 error = EINVAL; 1130 } 1131 zc->zc_cookie = newstate; 1132 spa_close(spa, FTAG); 1133 return (error); 1134 } 1135 1136 static int 1137 zfs_ioc_vdev_attach(zfs_cmd_t *zc) 1138 { 1139 spa_t *spa; 1140 int replacing = zc->zc_cookie; 1141 nvlist_t *config; 1142 int error; 1143 1144 if ((error = spa_open(zc->zc_name, &spa, FTAG)) != 0) 1145 return (error); 1146 1147 if ((error = get_nvlist(zc->zc_nvlist_conf, zc->zc_nvlist_conf_size, 1148 &config)) == 0) { 1149 error = spa_vdev_attach(spa, zc->zc_guid, config, replacing); 1150 nvlist_free(config); 1151 } 1152 1153 spa_close(spa, FTAG); 1154 return (error); 1155 } 1156 1157 static int 1158 zfs_ioc_vdev_detach(zfs_cmd_t *zc) 1159 { 1160 spa_t *spa; 1161 int error; 1162 1163 if ((error = spa_open(zc->zc_name, &spa, FTAG)) != 0) 1164 return (error); 1165 1166 error = spa_vdev_detach(spa, zc->zc_guid, B_FALSE); 1167 1168 spa_close(spa, FTAG); 1169 return (error); 1170 } 1171 1172 static int 1173 zfs_ioc_vdev_setpath(zfs_cmd_t *zc) 1174 { 1175 spa_t *spa; 1176 char *path = zc->zc_value; 1177 uint64_t guid = zc->zc_guid; 1178 int error; 1179 1180 error = spa_open(zc->zc_name, &spa, FTAG); 1181 if (error != 0) 1182 return (error); 1183 1184 error = spa_vdev_setpath(spa, guid, path); 1185 spa_close(spa, FTAG); 1186 return (error); 1187 } 1188 1189 /* 1190 * inputs: 1191 * zc_name name of filesystem 1192 * zc_nvlist_dst_size size of buffer for property nvlist 1193 * 1194 * outputs: 1195 * zc_objset_stats stats 1196 * zc_nvlist_dst property nvlist 1197 * zc_nvlist_dst_size size of property nvlist 1198 */ 1199 static int 1200 zfs_ioc_objset_stats(zfs_cmd_t *zc) 1201 { 1202 objset_t *os = NULL; 1203 int error; 1204 nvlist_t *nv; 1205 1206 if (error = dmu_objset_open(zc->zc_name, 1207 DMU_OST_ANY, DS_MODE_USER | DS_MODE_READONLY, &os)) 1208 return (error); 1209 1210 dmu_objset_fast_stat(os, &zc->zc_objset_stats); 1211 1212 if (zc->zc_nvlist_dst != 0 && 1213 (error = dsl_prop_get_all(os, &nv, FALSE)) == 0) { 1214 dmu_objset_stats(os, nv); 1215 /* 1216 * NB: zvol_get_stats() will read the objset contents, 1217 * which we aren't supposed to do with a 1218 * DS_MODE_USER hold, because it could be 1219 * inconsistent. So this is a bit of a workaround... 1220 */ 1221 if (!zc->zc_objset_stats.dds_inconsistent) { 1222 if (dmu_objset_type(os) == DMU_OST_ZVOL) 1223 VERIFY(zvol_get_stats(os, nv) == 0); 1224 } 1225 error = put_nvlist(zc, nv); 1226 nvlist_free(nv); 1227 } 1228 1229 dmu_objset_close(os); 1230 return (error); 1231 } 1232 1233 static int 1234 nvl_add_zplprop(objset_t *os, nvlist_t *props, zfs_prop_t prop) 1235 { 1236 uint64_t value; 1237 int error; 1238 1239 /* 1240 * zfs_get_zplprop() will either find a value or give us 1241 * the default value (if there is one). 1242 */ 1243 if ((error = zfs_get_zplprop(os, prop, &value)) != 0) 1244 return (error); 1245 VERIFY(nvlist_add_uint64(props, zfs_prop_to_name(prop), value) == 0); 1246 return (0); 1247 } 1248 1249 /* 1250 * inputs: 1251 * zc_name name of filesystem 1252 * zc_nvlist_dst_size size of buffer for zpl property nvlist 1253 * 1254 * outputs: 1255 * zc_nvlist_dst zpl property nvlist 1256 * zc_nvlist_dst_size size of zpl property nvlist 1257 */ 1258 static int 1259 zfs_ioc_objset_zplprops(zfs_cmd_t *zc) 1260 { 1261 objset_t *os; 1262 int err; 1263 1264 if (err = dmu_objset_open(zc->zc_name, 1265 DMU_OST_ANY, DS_MODE_USER | DS_MODE_READONLY, &os)) 1266 return (err); 1267 1268 dmu_objset_fast_stat(os, &zc->zc_objset_stats); 1269 1270 /* 1271 * NB: nvl_add_zplprop() will read the objset contents, 1272 * which we aren't supposed to do with a DS_MODE_USER 1273 * hold, because it could be inconsistent. 1274 */ 1275 if (zc->zc_nvlist_dst != NULL && 1276 !zc->zc_objset_stats.dds_inconsistent && 1277 dmu_objset_type(os) == DMU_OST_ZFS) { 1278 nvlist_t *nv; 1279 1280 VERIFY(nvlist_alloc(&nv, NV_UNIQUE_NAME, KM_SLEEP) == 0); 1281 if ((err = nvl_add_zplprop(os, nv, ZFS_PROP_VERSION)) == 0 && 1282 (err = nvl_add_zplprop(os, nv, ZFS_PROP_NORMALIZE)) == 0 && 1283 (err = nvl_add_zplprop(os, nv, ZFS_PROP_UTF8ONLY)) == 0 && 1284 (err = nvl_add_zplprop(os, nv, ZFS_PROP_CASE)) == 0) 1285 err = put_nvlist(zc, nv); 1286 nvlist_free(nv); 1287 } else { 1288 err = ENOENT; 1289 } 1290 dmu_objset_close(os); 1291 return (err); 1292 } 1293 1294 static void 1295 zfs_prefetch_datasets(zfs_cmd_t *zc, objset_t *os, char *p) 1296 { 1297 uint64_t cookie = 0; 1298 int error; 1299 1300 do { 1301 error = dmu_dir_list_next(os, 1302 sizeof (zc->zc_name) - (p - zc->zc_name), p, 1303 NULL, &cookie); 1304 } while (error == 0 && !INGLOBALZONE(curproc) && 1305 !zone_dataset_visible(zc->zc_name, NULL) && 1306 !dmu_objset_prefetch(zc->zc_name, NULL)); 1307 } 1308 1309 static void 1310 zfs_prefetch_snapshots(zfs_cmd_t *zc) 1311 { 1312 dmu_objset_find(zc->zc_name, dmu_objset_prefetch, 1313 NULL, DS_FIND_SNAPSHOTS); 1314 } 1315 1316 /* 1317 * inputs: 1318 * zc_name name of filesystem 1319 * zc_cookie zap cursor 1320 * zc_nvlist_dst_size size of buffer for property nvlist 1321 * 1322 * outputs: 1323 * zc_name name of next filesystem 1324 * zc_objset_stats stats 1325 * zc_nvlist_dst property nvlist 1326 * zc_nvlist_dst_size size of property nvlist 1327 */ 1328 static int 1329 zfs_ioc_dataset_list_next(zfs_cmd_t *zc) 1330 { 1331 objset_t *os; 1332 int error; 1333 char *p; 1334 1335 if (error = dmu_objset_open(zc->zc_name, 1336 DMU_OST_ANY, DS_MODE_USER | DS_MODE_READONLY, &os)) { 1337 if (error == ENOENT) 1338 error = ESRCH; 1339 return (error); 1340 } 1341 1342 p = strrchr(zc->zc_name, '/'); 1343 if (p == NULL || p[1] != '\0') 1344 (void) strlcat(zc->zc_name, "/", sizeof (zc->zc_name)); 1345 p = zc->zc_name + strlen(zc->zc_name); 1346 1347 if (zc->zc_cookie == 0) 1348 zfs_prefetch_datasets(zc, os, p); 1349 do { 1350 error = dmu_dir_list_next(os, 1351 sizeof (zc->zc_name) - (p - zc->zc_name), p, 1352 NULL, &zc->zc_cookie); 1353 if (error == ENOENT) 1354 error = ESRCH; 1355 } while (error == 0 && !INGLOBALZONE(curproc) && 1356 !zone_dataset_visible(zc->zc_name, NULL)); 1357 dmu_objset_close(os); 1358 1359 /* 1360 * If it's a hidden dataset (ie. with a '$' in its name), don't 1361 * try to get stats for it. Userland will skip over it. 1362 */ 1363 if (error == 0 && strchr(zc->zc_name, '$') == NULL) 1364 error = zfs_ioc_objset_stats(zc); /* fill in the stats */ 1365 1366 return (error); 1367 } 1368 1369 /* 1370 * inputs: 1371 * zc_name name of filesystem 1372 * zc_cookie zap cursor 1373 * zc_nvlist_dst_size size of buffer for property nvlist 1374 * 1375 * outputs: 1376 * zc_name name of next snapshot 1377 * zc_objset_stats stats 1378 * zc_nvlist_dst property nvlist 1379 * zc_nvlist_dst_size size of property nvlist 1380 */ 1381 static int 1382 zfs_ioc_snapshot_list_next(zfs_cmd_t *zc) 1383 { 1384 objset_t *os; 1385 int error; 1386 1387 error = dmu_objset_open(zc->zc_name, 1388 DMU_OST_ANY, DS_MODE_USER | DS_MODE_READONLY, &os); 1389 if (error) 1390 return (error == ENOENT ? ESRCH : error); 1391 1392 if (zc->zc_cookie == 0) 1393 zfs_prefetch_snapshots(zc); 1394 /* 1395 * A dataset name of maximum length cannot have any snapshots, 1396 * so exit immediately. 1397 */ 1398 if (strlcat(zc->zc_name, "@", sizeof (zc->zc_name)) >= MAXNAMELEN) { 1399 dmu_objset_close(os); 1400 return (ESRCH); 1401 } 1402 1403 error = dmu_snapshot_list_next(os, 1404 sizeof (zc->zc_name) - strlen(zc->zc_name), 1405 zc->zc_name + strlen(zc->zc_name), NULL, &zc->zc_cookie, NULL); 1406 dmu_objset_close(os); 1407 if (error == 0) 1408 error = zfs_ioc_objset_stats(zc); /* fill in the stats */ 1409 else if (error == ENOENT) 1410 error = ESRCH; 1411 1412 /* if we failed, undo the @ that we tacked on to zc_name */ 1413 if (error) 1414 *strchr(zc->zc_name, '@') = '\0'; 1415 return (error); 1416 } 1417 1418 int 1419 zfs_set_prop_nvlist(const char *name, nvlist_t *nvl) 1420 { 1421 nvpair_t *elem; 1422 int error; 1423 uint64_t intval; 1424 char *strval; 1425 1426 /* 1427 * First validate permission to set all of the properties 1428 */ 1429 elem = NULL; 1430 while ((elem = nvlist_next_nvpair(nvl, elem)) != NULL) { 1431 const char *propname = nvpair_name(elem); 1432 zfs_prop_t prop = zfs_name_to_prop(propname); 1433 1434 if (prop == ZPROP_INVAL) { 1435 /* 1436 * If this is a user-defined property, it must be a 1437 * string, and there is no further validation to do. 1438 */ 1439 if (!zfs_prop_user(propname) || 1440 nvpair_type(elem) != DATA_TYPE_STRING) 1441 return (EINVAL); 1442 1443 if (error = zfs_secpolicy_write_perms(name, 1444 ZFS_DELEG_PERM_USERPROP, CRED())) 1445 return (error); 1446 continue; 1447 } 1448 1449 if ((error = zfs_secpolicy_setprop(name, prop, CRED())) != 0) 1450 return (error); 1451 1452 /* 1453 * Check that this value is valid for this pool version 1454 */ 1455 switch (prop) { 1456 case ZFS_PROP_COMPRESSION: 1457 /* 1458 * If the user specified gzip compression, make sure 1459 * the SPA supports it. We ignore any errors here since 1460 * we'll catch them later. 1461 */ 1462 if (nvpair_type(elem) == DATA_TYPE_UINT64 && 1463 nvpair_value_uint64(elem, &intval) == 0) { 1464 if (intval >= ZIO_COMPRESS_GZIP_1 && 1465 intval <= ZIO_COMPRESS_GZIP_9 && 1466 zfs_earlier_version(name, 1467 SPA_VERSION_GZIP_COMPRESSION)) 1468 return (ENOTSUP); 1469 1470 /* 1471 * If this is a bootable dataset then 1472 * verify that the compression algorithm 1473 * is supported for booting. We must return 1474 * something other than ENOTSUP since it 1475 * implies a downrev pool version. 1476 */ 1477 if (zfs_is_bootfs(name) && 1478 !BOOTFS_COMPRESS_VALID(intval)) 1479 return (ERANGE); 1480 } 1481 break; 1482 1483 case ZFS_PROP_COPIES: 1484 if (zfs_earlier_version(name, 1485 SPA_VERSION_DITTO_BLOCKS)) 1486 return (ENOTSUP); 1487 break; 1488 1489 case ZFS_PROP_SHARESMB: 1490 if (zpl_earlier_version(name, ZPL_VERSION_FUID)) 1491 return (ENOTSUP); 1492 break; 1493 1494 case ZFS_PROP_ACLINHERIT: 1495 if (nvpair_type(elem) == DATA_TYPE_UINT64 && 1496 nvpair_value_uint64(elem, &intval) == 0) 1497 if (intval == ZFS_ACL_PASSTHROUGH_X && 1498 zfs_earlier_version(name, 1499 SPA_VERSION_PASSTHROUGH_X)) 1500 return (ENOTSUP); 1501 } 1502 } 1503 1504 elem = NULL; 1505 while ((elem = nvlist_next_nvpair(nvl, elem)) != NULL) { 1506 const char *propname = nvpair_name(elem); 1507 zfs_prop_t prop = zfs_name_to_prop(propname); 1508 1509 if (prop == ZPROP_INVAL) { 1510 VERIFY(nvpair_value_string(elem, &strval) == 0); 1511 error = dsl_prop_set(name, propname, 1, 1512 strlen(strval) + 1, strval); 1513 if (error == 0) 1514 continue; 1515 else 1516 return (error); 1517 } 1518 1519 switch (prop) { 1520 case ZFS_PROP_QUOTA: 1521 if ((error = nvpair_value_uint64(elem, &intval)) != 0 || 1522 (error = dsl_dir_set_quota(name, intval)) != 0) 1523 return (error); 1524 break; 1525 1526 case ZFS_PROP_REFQUOTA: 1527 if ((error = nvpair_value_uint64(elem, &intval)) != 0 || 1528 (error = dsl_dataset_set_quota(name, intval)) != 0) 1529 return (error); 1530 break; 1531 1532 case ZFS_PROP_RESERVATION: 1533 if ((error = nvpair_value_uint64(elem, &intval)) != 0 || 1534 (error = dsl_dir_set_reservation(name, 1535 intval)) != 0) 1536 return (error); 1537 break; 1538 1539 case ZFS_PROP_REFRESERVATION: 1540 if ((error = nvpair_value_uint64(elem, &intval)) != 0 || 1541 (error = dsl_dataset_set_reservation(name, 1542 intval)) != 0) 1543 return (error); 1544 break; 1545 1546 case ZFS_PROP_VOLSIZE: 1547 if ((error = nvpair_value_uint64(elem, &intval)) != 0 || 1548 (error = zvol_set_volsize(name, 1549 ddi_driver_major(zfs_dip), intval)) != 0) 1550 return (error); 1551 break; 1552 1553 case ZFS_PROP_VOLBLOCKSIZE: 1554 if ((error = nvpair_value_uint64(elem, &intval)) != 0 || 1555 (error = zvol_set_volblocksize(name, intval)) != 0) 1556 return (error); 1557 break; 1558 1559 case ZFS_PROP_VERSION: 1560 if ((error = nvpair_value_uint64(elem, &intval)) != 0 || 1561 (error = zfs_set_version(name, intval)) != 0) 1562 return (error); 1563 break; 1564 1565 default: 1566 if (nvpair_type(elem) == DATA_TYPE_STRING) { 1567 if (zfs_prop_get_type(prop) != 1568 PROP_TYPE_STRING) 1569 return (EINVAL); 1570 VERIFY(nvpair_value_string(elem, &strval) == 0); 1571 if ((error = dsl_prop_set(name, 1572 nvpair_name(elem), 1, strlen(strval) + 1, 1573 strval)) != 0) 1574 return (error); 1575 } else if (nvpair_type(elem) == DATA_TYPE_UINT64) { 1576 const char *unused; 1577 1578 VERIFY(nvpair_value_uint64(elem, &intval) == 0); 1579 1580 switch (zfs_prop_get_type(prop)) { 1581 case PROP_TYPE_NUMBER: 1582 break; 1583 case PROP_TYPE_STRING: 1584 return (EINVAL); 1585 case PROP_TYPE_INDEX: 1586 if (zfs_prop_index_to_string(prop, 1587 intval, &unused) != 0) 1588 return (EINVAL); 1589 break; 1590 default: 1591 cmn_err(CE_PANIC, 1592 "unknown property type"); 1593 break; 1594 } 1595 1596 if ((error = dsl_prop_set(name, propname, 1597 8, 1, &intval)) != 0) 1598 return (error); 1599 } else { 1600 return (EINVAL); 1601 } 1602 break; 1603 } 1604 } 1605 1606 return (0); 1607 } 1608 1609 /* 1610 * inputs: 1611 * zc_name name of filesystem 1612 * zc_value name of property to inherit 1613 * zc_nvlist_src{_size} nvlist of properties to apply 1614 * zc_cookie clear existing local props? 1615 * 1616 * outputs: none 1617 */ 1618 static int 1619 zfs_ioc_set_prop(zfs_cmd_t *zc) 1620 { 1621 nvlist_t *nvl; 1622 int error; 1623 1624 if ((error = get_nvlist(zc->zc_nvlist_src, zc->zc_nvlist_src_size, 1625 &nvl)) != 0) 1626 return (error); 1627 1628 if (zc->zc_cookie) { 1629 nvlist_t *origprops; 1630 objset_t *os; 1631 1632 if (dmu_objset_open(zc->zc_name, DMU_OST_ANY, 1633 DS_MODE_USER | DS_MODE_READONLY, &os) == 0) { 1634 if (dsl_prop_get_all(os, &origprops, TRUE) == 0) { 1635 clear_props(zc->zc_name, origprops); 1636 nvlist_free(origprops); 1637 } 1638 dmu_objset_close(os); 1639 } 1640 1641 } 1642 1643 error = zfs_set_prop_nvlist(zc->zc_name, nvl); 1644 1645 nvlist_free(nvl); 1646 return (error); 1647 } 1648 1649 /* 1650 * inputs: 1651 * zc_name name of filesystem 1652 * zc_value name of property to inherit 1653 * 1654 * outputs: none 1655 */ 1656 static int 1657 zfs_ioc_inherit_prop(zfs_cmd_t *zc) 1658 { 1659 /* the property name has been validated by zfs_secpolicy_inherit() */ 1660 return (dsl_prop_set(zc->zc_name, zc->zc_value, 0, 0, NULL)); 1661 } 1662 1663 static int 1664 zfs_ioc_pool_set_props(zfs_cmd_t *zc) 1665 { 1666 nvlist_t *props; 1667 spa_t *spa; 1668 int error; 1669 1670 if ((error = get_nvlist(zc->zc_nvlist_src, zc->zc_nvlist_src_size, 1671 &props))) 1672 return (error); 1673 1674 if ((error = spa_open(zc->zc_name, &spa, FTAG)) != 0) { 1675 nvlist_free(props); 1676 return (error); 1677 } 1678 1679 error = spa_prop_set(spa, props); 1680 1681 nvlist_free(props); 1682 spa_close(spa, FTAG); 1683 1684 return (error); 1685 } 1686 1687 static int 1688 zfs_ioc_pool_get_props(zfs_cmd_t *zc) 1689 { 1690 spa_t *spa; 1691 int error; 1692 nvlist_t *nvp = NULL; 1693 1694 if ((error = spa_open(zc->zc_name, &spa, FTAG)) != 0) 1695 return (error); 1696 1697 error = spa_prop_get(spa, &nvp); 1698 1699 if (error == 0 && zc->zc_nvlist_dst != NULL) 1700 error = put_nvlist(zc, nvp); 1701 else 1702 error = EFAULT; 1703 1704 spa_close(spa, FTAG); 1705 1706 if (nvp) 1707 nvlist_free(nvp); 1708 return (error); 1709 } 1710 1711 static int 1712 zfs_ioc_iscsi_perm_check(zfs_cmd_t *zc) 1713 { 1714 nvlist_t *nvp; 1715 int error; 1716 uint32_t uid; 1717 uint32_t gid; 1718 uint32_t *groups; 1719 uint_t group_cnt; 1720 cred_t *usercred; 1721 1722 if ((error = get_nvlist(zc->zc_nvlist_src, zc->zc_nvlist_src_size, 1723 &nvp)) != 0) { 1724 return (error); 1725 } 1726 1727 if ((error = nvlist_lookup_uint32(nvp, 1728 ZFS_DELEG_PERM_UID, &uid)) != 0) { 1729 nvlist_free(nvp); 1730 return (EPERM); 1731 } 1732 1733 if ((error = nvlist_lookup_uint32(nvp, 1734 ZFS_DELEG_PERM_GID, &gid)) != 0) { 1735 nvlist_free(nvp); 1736 return (EPERM); 1737 } 1738 1739 if ((error = nvlist_lookup_uint32_array(nvp, ZFS_DELEG_PERM_GROUPS, 1740 &groups, &group_cnt)) != 0) { 1741 nvlist_free(nvp); 1742 return (EPERM); 1743 } 1744 usercred = cralloc(); 1745 if ((crsetugid(usercred, uid, gid) != 0) || 1746 (crsetgroups(usercred, group_cnt, (gid_t *)groups) != 0)) { 1747 nvlist_free(nvp); 1748 crfree(usercred); 1749 return (EPERM); 1750 } 1751 nvlist_free(nvp); 1752 error = dsl_deleg_access(zc->zc_name, 1753 zfs_prop_to_name(ZFS_PROP_SHAREISCSI), usercred); 1754 crfree(usercred); 1755 return (error); 1756 } 1757 1758 /* 1759 * inputs: 1760 * zc_name name of filesystem 1761 * zc_nvlist_src{_size} nvlist of delegated permissions 1762 * zc_perm_action allow/unallow flag 1763 * 1764 * outputs: none 1765 */ 1766 static int 1767 zfs_ioc_set_fsacl(zfs_cmd_t *zc) 1768 { 1769 int error; 1770 nvlist_t *fsaclnv = NULL; 1771 1772 if ((error = get_nvlist(zc->zc_nvlist_src, zc->zc_nvlist_src_size, 1773 &fsaclnv)) != 0) 1774 return (error); 1775 1776 /* 1777 * Verify nvlist is constructed correctly 1778 */ 1779 if ((error = zfs_deleg_verify_nvlist(fsaclnv)) != 0) { 1780 nvlist_free(fsaclnv); 1781 return (EINVAL); 1782 } 1783 1784 /* 1785 * If we don't have PRIV_SYS_MOUNT, then validate 1786 * that user is allowed to hand out each permission in 1787 * the nvlist(s) 1788 */ 1789 1790 error = secpolicy_zfs(CRED()); 1791 if (error) { 1792 if (zc->zc_perm_action == B_FALSE) { 1793 error = dsl_deleg_can_allow(zc->zc_name, 1794 fsaclnv, CRED()); 1795 } else { 1796 error = dsl_deleg_can_unallow(zc->zc_name, 1797 fsaclnv, CRED()); 1798 } 1799 } 1800 1801 if (error == 0) 1802 error = dsl_deleg_set(zc->zc_name, fsaclnv, zc->zc_perm_action); 1803 1804 nvlist_free(fsaclnv); 1805 return (error); 1806 } 1807 1808 /* 1809 * inputs: 1810 * zc_name name of filesystem 1811 * 1812 * outputs: 1813 * zc_nvlist_src{_size} nvlist of delegated permissions 1814 */ 1815 static int 1816 zfs_ioc_get_fsacl(zfs_cmd_t *zc) 1817 { 1818 nvlist_t *nvp; 1819 int error; 1820 1821 if ((error = dsl_deleg_get(zc->zc_name, &nvp)) == 0) { 1822 error = put_nvlist(zc, nvp); 1823 nvlist_free(nvp); 1824 } 1825 1826 return (error); 1827 } 1828 1829 /* 1830 * inputs: 1831 * zc_name name of volume 1832 * 1833 * outputs: none 1834 */ 1835 static int 1836 zfs_ioc_create_minor(zfs_cmd_t *zc) 1837 { 1838 return (zvol_create_minor(zc->zc_name, ddi_driver_major(zfs_dip))); 1839 } 1840 1841 /* 1842 * inputs: 1843 * zc_name name of volume 1844 * 1845 * outputs: none 1846 */ 1847 static int 1848 zfs_ioc_remove_minor(zfs_cmd_t *zc) 1849 { 1850 return (zvol_remove_minor(zc->zc_name)); 1851 } 1852 1853 /* 1854 * Search the vfs list for a specified resource. Returns a pointer to it 1855 * or NULL if no suitable entry is found. The caller of this routine 1856 * is responsible for releasing the returned vfs pointer. 1857 */ 1858 static vfs_t * 1859 zfs_get_vfs(const char *resource) 1860 { 1861 struct vfs *vfsp; 1862 struct vfs *vfs_found = NULL; 1863 1864 vfs_list_read_lock(); 1865 vfsp = rootvfs; 1866 do { 1867 if (strcmp(refstr_value(vfsp->vfs_resource), resource) == 0) { 1868 VFS_HOLD(vfsp); 1869 vfs_found = vfsp; 1870 break; 1871 } 1872 vfsp = vfsp->vfs_next; 1873 } while (vfsp != rootvfs); 1874 vfs_list_unlock(); 1875 return (vfs_found); 1876 } 1877 1878 /* ARGSUSED */ 1879 static void 1880 zfs_create_cb(objset_t *os, void *arg, cred_t *cr, dmu_tx_t *tx) 1881 { 1882 zfs_creat_t *zct = arg; 1883 1884 zfs_create_fs(os, cr, zct->zct_zplprops, tx); 1885 } 1886 1887 #define ZFS_PROP_UNDEFINED ((uint64_t)-1) 1888 1889 /* 1890 * inputs: 1891 * createprops list of properties requested by creator 1892 * default_zplver zpl version to use if unspecified in createprops 1893 * fuids_ok fuids allowed in this version of the spa? 1894 * os parent objset pointer (NULL if root fs) 1895 * 1896 * outputs: 1897 * zplprops values for the zplprops we attach to the master node object 1898 * is_ci true if requested file system will be purely case-insensitive 1899 * 1900 * Determine the settings for utf8only, normalization and 1901 * casesensitivity. Specific values may have been requested by the 1902 * creator and/or we can inherit values from the parent dataset. If 1903 * the file system is of too early a vintage, a creator can not 1904 * request settings for these properties, even if the requested 1905 * setting is the default value. We don't actually want to create dsl 1906 * properties for these, so remove them from the source nvlist after 1907 * processing. 1908 */ 1909 static int 1910 zfs_fill_zplprops_impl(objset_t *os, uint64_t default_zplver, 1911 boolean_t fuids_ok, nvlist_t *createprops, nvlist_t *zplprops, 1912 boolean_t *is_ci) 1913 { 1914 uint64_t zplver = default_zplver; 1915 uint64_t sense = ZFS_PROP_UNDEFINED; 1916 uint64_t norm = ZFS_PROP_UNDEFINED; 1917 uint64_t u8 = ZFS_PROP_UNDEFINED; 1918 1919 ASSERT(zplprops != NULL); 1920 1921 /* 1922 * Pull out creator prop choices, if any. 1923 */ 1924 if (createprops) { 1925 (void) nvlist_lookup_uint64(createprops, 1926 zfs_prop_to_name(ZFS_PROP_VERSION), &zplver); 1927 (void) nvlist_lookup_uint64(createprops, 1928 zfs_prop_to_name(ZFS_PROP_NORMALIZE), &norm); 1929 (void) nvlist_remove_all(createprops, 1930 zfs_prop_to_name(ZFS_PROP_NORMALIZE)); 1931 (void) nvlist_lookup_uint64(createprops, 1932 zfs_prop_to_name(ZFS_PROP_UTF8ONLY), &u8); 1933 (void) nvlist_remove_all(createprops, 1934 zfs_prop_to_name(ZFS_PROP_UTF8ONLY)); 1935 (void) nvlist_lookup_uint64(createprops, 1936 zfs_prop_to_name(ZFS_PROP_CASE), &sense); 1937 (void) nvlist_remove_all(createprops, 1938 zfs_prop_to_name(ZFS_PROP_CASE)); 1939 } 1940 1941 /* 1942 * If the zpl version requested is whacky or the file system 1943 * or pool is version is too "young" to support normalization 1944 * and the creator tried to set a value for one of the props, 1945 * error out. 1946 */ 1947 if ((zplver < ZPL_VERSION_INITIAL || zplver > ZPL_VERSION) || 1948 (zplver >= ZPL_VERSION_FUID && !fuids_ok) || 1949 (zplver < ZPL_VERSION_NORMALIZATION && 1950 (norm != ZFS_PROP_UNDEFINED || u8 != ZFS_PROP_UNDEFINED || 1951 sense != ZFS_PROP_UNDEFINED))) 1952 return (ENOTSUP); 1953 1954 /* 1955 * Put the version in the zplprops 1956 */ 1957 VERIFY(nvlist_add_uint64(zplprops, 1958 zfs_prop_to_name(ZFS_PROP_VERSION), zplver) == 0); 1959 1960 if (norm == ZFS_PROP_UNDEFINED) 1961 VERIFY(zfs_get_zplprop(os, ZFS_PROP_NORMALIZE, &norm) == 0); 1962 VERIFY(nvlist_add_uint64(zplprops, 1963 zfs_prop_to_name(ZFS_PROP_NORMALIZE), norm) == 0); 1964 1965 /* 1966 * If we're normalizing, names must always be valid UTF-8 strings. 1967 */ 1968 if (norm) 1969 u8 = 1; 1970 if (u8 == ZFS_PROP_UNDEFINED) 1971 VERIFY(zfs_get_zplprop(os, ZFS_PROP_UTF8ONLY, &u8) == 0); 1972 VERIFY(nvlist_add_uint64(zplprops, 1973 zfs_prop_to_name(ZFS_PROP_UTF8ONLY), u8) == 0); 1974 1975 if (sense == ZFS_PROP_UNDEFINED) 1976 VERIFY(zfs_get_zplprop(os, ZFS_PROP_CASE, &sense) == 0); 1977 VERIFY(nvlist_add_uint64(zplprops, 1978 zfs_prop_to_name(ZFS_PROP_CASE), sense) == 0); 1979 1980 if (is_ci) 1981 *is_ci = (sense == ZFS_CASE_INSENSITIVE); 1982 1983 return (0); 1984 } 1985 1986 static int 1987 zfs_fill_zplprops(const char *dataset, nvlist_t *createprops, 1988 nvlist_t *zplprops, boolean_t *is_ci) 1989 { 1990 boolean_t fuids_ok = B_TRUE; 1991 uint64_t zplver = ZPL_VERSION; 1992 objset_t *os = NULL; 1993 char parentname[MAXNAMELEN]; 1994 char *cp; 1995 int error; 1996 1997 (void) strlcpy(parentname, dataset, sizeof (parentname)); 1998 cp = strrchr(parentname, '/'); 1999 ASSERT(cp != NULL); 2000 cp[0] = '\0'; 2001 2002 if (zfs_earlier_version(dataset, SPA_VERSION_FUID)) { 2003 zplver = ZPL_VERSION_FUID - 1; 2004 fuids_ok = B_FALSE; 2005 } 2006 2007 /* 2008 * Open parent object set so we can inherit zplprop values. 2009 */ 2010 if ((error = dmu_objset_open(parentname, DMU_OST_ANY, 2011 DS_MODE_USER | DS_MODE_READONLY, &os)) != 0) 2012 return (error); 2013 2014 error = zfs_fill_zplprops_impl(os, zplver, fuids_ok, createprops, 2015 zplprops, is_ci); 2016 dmu_objset_close(os); 2017 return (error); 2018 } 2019 2020 static int 2021 zfs_fill_zplprops_root(uint64_t spa_vers, nvlist_t *createprops, 2022 nvlist_t *zplprops, boolean_t *is_ci) 2023 { 2024 boolean_t fuids_ok = B_TRUE; 2025 uint64_t zplver = ZPL_VERSION; 2026 int error; 2027 2028 if (spa_vers < SPA_VERSION_FUID) { 2029 zplver = ZPL_VERSION_FUID - 1; 2030 fuids_ok = B_FALSE; 2031 } 2032 2033 error = zfs_fill_zplprops_impl(NULL, zplver, fuids_ok, createprops, 2034 zplprops, is_ci); 2035 return (error); 2036 } 2037 2038 /* 2039 * inputs: 2040 * zc_objset_type type of objset to create (fs vs zvol) 2041 * zc_name name of new objset 2042 * zc_value name of snapshot to clone from (may be empty) 2043 * zc_nvlist_src{_size} nvlist of properties to apply 2044 * 2045 * outputs: none 2046 */ 2047 static int 2048 zfs_ioc_create(zfs_cmd_t *zc) 2049 { 2050 objset_t *clone; 2051 int error = 0; 2052 zfs_creat_t zct; 2053 nvlist_t *nvprops = NULL; 2054 void (*cbfunc)(objset_t *os, void *arg, cred_t *cr, dmu_tx_t *tx); 2055 dmu_objset_type_t type = zc->zc_objset_type; 2056 2057 switch (type) { 2058 2059 case DMU_OST_ZFS: 2060 cbfunc = zfs_create_cb; 2061 break; 2062 2063 case DMU_OST_ZVOL: 2064 cbfunc = zvol_create_cb; 2065 break; 2066 2067 default: 2068 cbfunc = NULL; 2069 break; 2070 } 2071 if (strchr(zc->zc_name, '@') || 2072 strchr(zc->zc_name, '%')) 2073 return (EINVAL); 2074 2075 if (zc->zc_nvlist_src != NULL && 2076 (error = get_nvlist(zc->zc_nvlist_src, zc->zc_nvlist_src_size, 2077 &nvprops)) != 0) 2078 return (error); 2079 2080 zct.zct_zplprops = NULL; 2081 zct.zct_props = nvprops; 2082 2083 if (zc->zc_value[0] != '\0') { 2084 /* 2085 * We're creating a clone of an existing snapshot. 2086 */ 2087 zc->zc_value[sizeof (zc->zc_value) - 1] = '\0'; 2088 if (dataset_namecheck(zc->zc_value, NULL, NULL) != 0) { 2089 nvlist_free(nvprops); 2090 return (EINVAL); 2091 } 2092 2093 error = dmu_objset_open(zc->zc_value, type, 2094 DS_MODE_USER | DS_MODE_READONLY, &clone); 2095 if (error) { 2096 nvlist_free(nvprops); 2097 return (error); 2098 } 2099 2100 error = dmu_objset_create(zc->zc_name, type, clone, 0, 2101 NULL, NULL); 2102 if (error) { 2103 dmu_objset_close(clone); 2104 nvlist_free(nvprops); 2105 return (error); 2106 } 2107 dmu_objset_close(clone); 2108 } else { 2109 boolean_t is_insensitive = B_FALSE; 2110 2111 if (cbfunc == NULL) { 2112 nvlist_free(nvprops); 2113 return (EINVAL); 2114 } 2115 2116 if (type == DMU_OST_ZVOL) { 2117 uint64_t volsize, volblocksize; 2118 2119 if (nvprops == NULL || 2120 nvlist_lookup_uint64(nvprops, 2121 zfs_prop_to_name(ZFS_PROP_VOLSIZE), 2122 &volsize) != 0) { 2123 nvlist_free(nvprops); 2124 return (EINVAL); 2125 } 2126 2127 if ((error = nvlist_lookup_uint64(nvprops, 2128 zfs_prop_to_name(ZFS_PROP_VOLBLOCKSIZE), 2129 &volblocksize)) != 0 && error != ENOENT) { 2130 nvlist_free(nvprops); 2131 return (EINVAL); 2132 } 2133 2134 if (error != 0) 2135 volblocksize = zfs_prop_default_numeric( 2136 ZFS_PROP_VOLBLOCKSIZE); 2137 2138 if ((error = zvol_check_volblocksize( 2139 volblocksize)) != 0 || 2140 (error = zvol_check_volsize(volsize, 2141 volblocksize)) != 0) { 2142 nvlist_free(nvprops); 2143 return (error); 2144 } 2145 } else if (type == DMU_OST_ZFS) { 2146 int error; 2147 2148 /* 2149 * We have to have normalization and 2150 * case-folding flags correct when we do the 2151 * file system creation, so go figure them out 2152 * now. 2153 */ 2154 VERIFY(nvlist_alloc(&zct.zct_zplprops, 2155 NV_UNIQUE_NAME, KM_SLEEP) == 0); 2156 error = zfs_fill_zplprops(zc->zc_name, nvprops, 2157 zct.zct_zplprops, &is_insensitive); 2158 if (error != 0) { 2159 nvlist_free(nvprops); 2160 nvlist_free(zct.zct_zplprops); 2161 return (error); 2162 } 2163 } 2164 error = dmu_objset_create(zc->zc_name, type, NULL, 2165 is_insensitive ? DS_FLAG_CI_DATASET : 0, cbfunc, &zct); 2166 nvlist_free(zct.zct_zplprops); 2167 } 2168 2169 /* 2170 * It would be nice to do this atomically. 2171 */ 2172 if (error == 0) { 2173 if ((error = zfs_set_prop_nvlist(zc->zc_name, nvprops)) != 0) 2174 (void) dmu_objset_destroy(zc->zc_name); 2175 } 2176 nvlist_free(nvprops); 2177 return (error); 2178 } 2179 2180 struct snap_prop_arg { 2181 nvlist_t *nvprops; 2182 const char *snapname; 2183 }; 2184 2185 static int 2186 set_snap_props(char *name, void *arg) 2187 { 2188 struct snap_prop_arg *snpa = arg; 2189 int len = strlen(name) + strlen(snpa->snapname) + 2; 2190 char *buf = kmem_alloc(len, KM_SLEEP); 2191 int err; 2192 2193 (void) snprintf(buf, len, "%s@%s", name, snpa->snapname); 2194 err = zfs_set_prop_nvlist(buf, snpa->nvprops); 2195 if (err) 2196 (void) dmu_objset_destroy(buf); 2197 kmem_free(buf, len); 2198 return (err); 2199 } 2200 2201 /* 2202 * inputs: 2203 * zc_name name of filesystem 2204 * zc_value short name of snapshot 2205 * zc_cookie recursive flag 2206 * 2207 * outputs: none 2208 */ 2209 static int 2210 zfs_ioc_snapshot(zfs_cmd_t *zc) 2211 { 2212 nvlist_t *nvprops = NULL; 2213 int error; 2214 boolean_t recursive = zc->zc_cookie; 2215 2216 if (snapshot_namecheck(zc->zc_value, NULL, NULL) != 0) 2217 return (EINVAL); 2218 2219 if (zc->zc_nvlist_src != NULL && 2220 (error = get_nvlist(zc->zc_nvlist_src, zc->zc_nvlist_src_size, 2221 &nvprops)) != 0) 2222 return (error); 2223 2224 error = dmu_objset_snapshot(zc->zc_name, zc->zc_value, recursive); 2225 2226 /* 2227 * It would be nice to do this atomically. 2228 */ 2229 if (error == 0) { 2230 struct snap_prop_arg snpa; 2231 snpa.nvprops = nvprops; 2232 snpa.snapname = zc->zc_value; 2233 if (recursive) { 2234 error = dmu_objset_find(zc->zc_name, 2235 set_snap_props, &snpa, DS_FIND_CHILDREN); 2236 if (error) { 2237 (void) dmu_snapshots_destroy(zc->zc_name, 2238 zc->zc_value); 2239 } 2240 } else { 2241 error = set_snap_props(zc->zc_name, &snpa); 2242 } 2243 } 2244 nvlist_free(nvprops); 2245 return (error); 2246 } 2247 2248 int 2249 zfs_unmount_snap(char *name, void *arg) 2250 { 2251 vfs_t *vfsp = NULL; 2252 2253 if (arg) { 2254 char *snapname = arg; 2255 int len = strlen(name) + strlen(snapname) + 2; 2256 char *buf = kmem_alloc(len, KM_SLEEP); 2257 2258 (void) strcpy(buf, name); 2259 (void) strcat(buf, "@"); 2260 (void) strcat(buf, snapname); 2261 vfsp = zfs_get_vfs(buf); 2262 kmem_free(buf, len); 2263 } else if (strchr(name, '@')) { 2264 vfsp = zfs_get_vfs(name); 2265 } 2266 2267 if (vfsp) { 2268 /* 2269 * Always force the unmount for snapshots. 2270 */ 2271 int flag = MS_FORCE; 2272 int err; 2273 2274 if ((err = vn_vfswlock(vfsp->vfs_vnodecovered)) != 0) { 2275 VFS_RELE(vfsp); 2276 return (err); 2277 } 2278 VFS_RELE(vfsp); 2279 if ((err = dounmount(vfsp, flag, kcred)) != 0) 2280 return (err); 2281 } 2282 return (0); 2283 } 2284 2285 /* 2286 * inputs: 2287 * zc_name name of filesystem 2288 * zc_value short name of snapshot 2289 * 2290 * outputs: none 2291 */ 2292 static int 2293 zfs_ioc_destroy_snaps(zfs_cmd_t *zc) 2294 { 2295 int err; 2296 2297 if (snapshot_namecheck(zc->zc_value, NULL, NULL) != 0) 2298 return (EINVAL); 2299 err = dmu_objset_find(zc->zc_name, 2300 zfs_unmount_snap, zc->zc_value, DS_FIND_CHILDREN); 2301 if (err) 2302 return (err); 2303 return (dmu_snapshots_destroy(zc->zc_name, zc->zc_value)); 2304 } 2305 2306 /* 2307 * inputs: 2308 * zc_name name of dataset to destroy 2309 * zc_objset_type type of objset 2310 * 2311 * outputs: none 2312 */ 2313 static int 2314 zfs_ioc_destroy(zfs_cmd_t *zc) 2315 { 2316 if (strchr(zc->zc_name, '@') && zc->zc_objset_type == DMU_OST_ZFS) { 2317 int err = zfs_unmount_snap(zc->zc_name, NULL); 2318 if (err) 2319 return (err); 2320 } 2321 2322 return (dmu_objset_destroy(zc->zc_name)); 2323 } 2324 2325 /* 2326 * inputs: 2327 * zc_name name of dataset to rollback (to most recent snapshot) 2328 * 2329 * outputs: none 2330 */ 2331 static int 2332 zfs_ioc_rollback(zfs_cmd_t *zc) 2333 { 2334 objset_t *os; 2335 int error; 2336 zfsvfs_t *zfsvfs = NULL; 2337 2338 /* 2339 * Get the zfsvfs for the receiving objset. There 2340 * won't be one if we're operating on a zvol, if the 2341 * objset doesn't exist yet, or is not mounted. 2342 */ 2343 error = dmu_objset_open(zc->zc_name, DMU_OST_ANY, DS_MODE_USER, &os); 2344 if (error) 2345 return (error); 2346 2347 if (dmu_objset_type(os) == DMU_OST_ZFS) { 2348 mutex_enter(&os->os->os_user_ptr_lock); 2349 zfsvfs = dmu_objset_get_user(os); 2350 if (zfsvfs != NULL) 2351 VFS_HOLD(zfsvfs->z_vfs); 2352 mutex_exit(&os->os->os_user_ptr_lock); 2353 } 2354 2355 if (zfsvfs != NULL) { 2356 char *osname; 2357 int mode; 2358 2359 osname = kmem_alloc(MAXNAMELEN, KM_SLEEP); 2360 error = zfs_suspend_fs(zfsvfs, osname, &mode); 2361 if (error == 0) { 2362 int resume_err; 2363 2364 ASSERT(strcmp(osname, zc->zc_name) == 0); 2365 error = dmu_objset_rollback(os); 2366 resume_err = zfs_resume_fs(zfsvfs, osname, mode); 2367 error = error ? error : resume_err; 2368 } else { 2369 dmu_objset_close(os); 2370 } 2371 kmem_free(osname, MAXNAMELEN); 2372 VFS_RELE(zfsvfs->z_vfs); 2373 } else { 2374 error = dmu_objset_rollback(os); 2375 } 2376 /* Note, the dmu_objset_rollback() releases the objset for us. */ 2377 2378 return (error); 2379 } 2380 2381 /* 2382 * inputs: 2383 * zc_name old name of dataset 2384 * zc_value new name of dataset 2385 * zc_cookie recursive flag (only valid for snapshots) 2386 * 2387 * outputs: none 2388 */ 2389 static int 2390 zfs_ioc_rename(zfs_cmd_t *zc) 2391 { 2392 boolean_t recursive = zc->zc_cookie & 1; 2393 2394 zc->zc_value[sizeof (zc->zc_value) - 1] = '\0'; 2395 if (dataset_namecheck(zc->zc_value, NULL, NULL) != 0 || 2396 strchr(zc->zc_value, '%')) 2397 return (EINVAL); 2398 2399 /* 2400 * Unmount snapshot unless we're doing a recursive rename, 2401 * in which case the dataset code figures out which snapshots 2402 * to unmount. 2403 */ 2404 if (!recursive && strchr(zc->zc_name, '@') != NULL && 2405 zc->zc_objset_type == DMU_OST_ZFS) { 2406 int err = zfs_unmount_snap(zc->zc_name, NULL); 2407 if (err) 2408 return (err); 2409 } 2410 return (dmu_objset_rename(zc->zc_name, zc->zc_value, recursive)); 2411 } 2412 2413 static void 2414 clear_props(char *dataset, nvlist_t *props) 2415 { 2416 zfs_cmd_t *zc; 2417 nvpair_t *prop; 2418 2419 if (props == NULL) 2420 return; 2421 zc = kmem_alloc(sizeof (zfs_cmd_t), KM_SLEEP); 2422 (void) strcpy(zc->zc_name, dataset); 2423 for (prop = nvlist_next_nvpair(props, NULL); prop; 2424 prop = nvlist_next_nvpair(props, prop)) { 2425 (void) strcpy(zc->zc_value, nvpair_name(prop)); 2426 if (zfs_secpolicy_inherit(zc, CRED()) == 0) 2427 (void) zfs_ioc_inherit_prop(zc); 2428 } 2429 kmem_free(zc, sizeof (zfs_cmd_t)); 2430 } 2431 2432 /* 2433 * inputs: 2434 * zc_name name of containing filesystem 2435 * zc_nvlist_src{_size} nvlist of properties to apply 2436 * zc_value name of snapshot to create 2437 * zc_string name of clone origin (if DRR_FLAG_CLONE) 2438 * zc_cookie file descriptor to recv from 2439 * zc_begin_record the BEGIN record of the stream (not byteswapped) 2440 * zc_guid force flag 2441 * 2442 * outputs: 2443 * zc_cookie number of bytes read 2444 */ 2445 static int 2446 zfs_ioc_recv(zfs_cmd_t *zc) 2447 { 2448 file_t *fp; 2449 objset_t *os; 2450 dmu_recv_cookie_t drc; 2451 zfsvfs_t *zfsvfs = NULL; 2452 boolean_t force = (boolean_t)zc->zc_guid; 2453 int error, fd; 2454 offset_t off; 2455 nvlist_t *props = NULL; 2456 nvlist_t *origprops = NULL; 2457 objset_t *origin = NULL; 2458 char *tosnap; 2459 char tofs[ZFS_MAXNAMELEN]; 2460 2461 if (dataset_namecheck(zc->zc_value, NULL, NULL) != 0 || 2462 strchr(zc->zc_value, '@') == NULL || 2463 strchr(zc->zc_value, '%')) 2464 return (EINVAL); 2465 2466 (void) strcpy(tofs, zc->zc_value); 2467 tosnap = strchr(tofs, '@'); 2468 *tosnap = '\0'; 2469 tosnap++; 2470 2471 if (zc->zc_nvlist_src != NULL && 2472 (error = get_nvlist(zc->zc_nvlist_src, zc->zc_nvlist_src_size, 2473 &props)) != 0) 2474 return (error); 2475 2476 fd = zc->zc_cookie; 2477 fp = getf(fd); 2478 if (fp == NULL) { 2479 nvlist_free(props); 2480 return (EBADF); 2481 } 2482 2483 if (dmu_objset_open(tofs, DMU_OST_ANY, 2484 DS_MODE_USER | DS_MODE_READONLY, &os) == 0) { 2485 /* 2486 * Try to get the zfsvfs for the receiving objset. 2487 * There won't be one if we're operating on a zvol, 2488 * if the objset doesn't exist yet, or is not mounted. 2489 */ 2490 mutex_enter(&os->os->os_user_ptr_lock); 2491 if (zfsvfs = dmu_objset_get_user(os)) { 2492 if (!mutex_tryenter(&zfsvfs->z_online_recv_lock)) { 2493 mutex_exit(&os->os->os_user_ptr_lock); 2494 dmu_objset_close(os); 2495 zfsvfs = NULL; 2496 error = EBUSY; 2497 goto out; 2498 } 2499 VFS_HOLD(zfsvfs->z_vfs); 2500 } 2501 mutex_exit(&os->os->os_user_ptr_lock); 2502 2503 /* 2504 * If new properties are supplied, they are to completely 2505 * replace the existing ones, so stash away the existing ones. 2506 */ 2507 if (props) 2508 (void) dsl_prop_get_all(os, &origprops, TRUE); 2509 2510 dmu_objset_close(os); 2511 } 2512 2513 if (zc->zc_string[0]) { 2514 error = dmu_objset_open(zc->zc_string, DMU_OST_ANY, 2515 DS_MODE_USER | DS_MODE_READONLY, &origin); 2516 if (error) 2517 goto out; 2518 } 2519 2520 error = dmu_recv_begin(tofs, tosnap, &zc->zc_begin_record, 2521 force, origin, zfsvfs != NULL, &drc); 2522 if (origin) 2523 dmu_objset_close(origin); 2524 if (error) 2525 goto out; 2526 2527 /* 2528 * Reset properties. We do this before we receive the stream 2529 * so that the properties are applied to the new data. 2530 */ 2531 if (props) { 2532 clear_props(tofs, origprops); 2533 /* 2534 * XXX - Note, this is all-or-nothing; should be best-effort. 2535 */ 2536 (void) zfs_set_prop_nvlist(tofs, props); 2537 } 2538 2539 off = fp->f_offset; 2540 error = dmu_recv_stream(&drc, fp->f_vnode, &off); 2541 2542 if (error == 0 && zfsvfs) { 2543 char *osname; 2544 int mode; 2545 2546 /* online recv */ 2547 osname = kmem_alloc(MAXNAMELEN, KM_SLEEP); 2548 error = zfs_suspend_fs(zfsvfs, osname, &mode); 2549 if (error == 0) { 2550 int resume_err; 2551 2552 error = dmu_recv_end(&drc); 2553 resume_err = zfs_resume_fs(zfsvfs, osname, mode); 2554 error = error ? error : resume_err; 2555 } else { 2556 dmu_recv_abort_cleanup(&drc); 2557 } 2558 kmem_free(osname, MAXNAMELEN); 2559 } else if (error == 0) { 2560 error = dmu_recv_end(&drc); 2561 } 2562 2563 zc->zc_cookie = off - fp->f_offset; 2564 if (VOP_SEEK(fp->f_vnode, fp->f_offset, &off, NULL) == 0) 2565 fp->f_offset = off; 2566 2567 /* 2568 * On error, restore the original props. 2569 */ 2570 if (error && props) { 2571 clear_props(tofs, props); 2572 (void) zfs_set_prop_nvlist(tofs, origprops); 2573 } 2574 out: 2575 if (zfsvfs) { 2576 mutex_exit(&zfsvfs->z_online_recv_lock); 2577 VFS_RELE(zfsvfs->z_vfs); 2578 } 2579 nvlist_free(props); 2580 nvlist_free(origprops); 2581 releasef(fd); 2582 return (error); 2583 } 2584 2585 /* 2586 * inputs: 2587 * zc_name name of snapshot to send 2588 * zc_value short name of incremental fromsnap (may be empty) 2589 * zc_cookie file descriptor to send stream to 2590 * zc_obj fromorigin flag (mutually exclusive with zc_value) 2591 * 2592 * outputs: none 2593 */ 2594 static int 2595 zfs_ioc_send(zfs_cmd_t *zc) 2596 { 2597 objset_t *fromsnap = NULL; 2598 objset_t *tosnap; 2599 file_t *fp; 2600 int error; 2601 offset_t off; 2602 2603 error = dmu_objset_open(zc->zc_name, DMU_OST_ANY, 2604 DS_MODE_USER | DS_MODE_READONLY, &tosnap); 2605 if (error) 2606 return (error); 2607 2608 if (zc->zc_value[0] != '\0') { 2609 char *buf; 2610 char *cp; 2611 2612 buf = kmem_alloc(MAXPATHLEN, KM_SLEEP); 2613 (void) strncpy(buf, zc->zc_name, MAXPATHLEN); 2614 cp = strchr(buf, '@'); 2615 if (cp) 2616 *(cp+1) = 0; 2617 (void) strncat(buf, zc->zc_value, MAXPATHLEN); 2618 error = dmu_objset_open(buf, DMU_OST_ANY, 2619 DS_MODE_USER | DS_MODE_READONLY, &fromsnap); 2620 kmem_free(buf, MAXPATHLEN); 2621 if (error) { 2622 dmu_objset_close(tosnap); 2623 return (error); 2624 } 2625 } 2626 2627 fp = getf(zc->zc_cookie); 2628 if (fp == NULL) { 2629 dmu_objset_close(tosnap); 2630 if (fromsnap) 2631 dmu_objset_close(fromsnap); 2632 return (EBADF); 2633 } 2634 2635 off = fp->f_offset; 2636 error = dmu_sendbackup(tosnap, fromsnap, zc->zc_obj, fp->f_vnode, &off); 2637 2638 if (VOP_SEEK(fp->f_vnode, fp->f_offset, &off, NULL) == 0) 2639 fp->f_offset = off; 2640 releasef(zc->zc_cookie); 2641 if (fromsnap) 2642 dmu_objset_close(fromsnap); 2643 dmu_objset_close(tosnap); 2644 return (error); 2645 } 2646 2647 static int 2648 zfs_ioc_inject_fault(zfs_cmd_t *zc) 2649 { 2650 int id, error; 2651 2652 error = zio_inject_fault(zc->zc_name, (int)zc->zc_guid, &id, 2653 &zc->zc_inject_record); 2654 2655 if (error == 0) 2656 zc->zc_guid = (uint64_t)id; 2657 2658 return (error); 2659 } 2660 2661 static int 2662 zfs_ioc_clear_fault(zfs_cmd_t *zc) 2663 { 2664 return (zio_clear_fault((int)zc->zc_guid)); 2665 } 2666 2667 static int 2668 zfs_ioc_inject_list_next(zfs_cmd_t *zc) 2669 { 2670 int id = (int)zc->zc_guid; 2671 int error; 2672 2673 error = zio_inject_list_next(&id, zc->zc_name, sizeof (zc->zc_name), 2674 &zc->zc_inject_record); 2675 2676 zc->zc_guid = id; 2677 2678 return (error); 2679 } 2680 2681 static int 2682 zfs_ioc_error_log(zfs_cmd_t *zc) 2683 { 2684 spa_t *spa; 2685 int error; 2686 size_t count = (size_t)zc->zc_nvlist_dst_size; 2687 2688 if ((error = spa_open(zc->zc_name, &spa, FTAG)) != 0) 2689 return (error); 2690 2691 error = spa_get_errlog(spa, (void *)(uintptr_t)zc->zc_nvlist_dst, 2692 &count); 2693 if (error == 0) 2694 zc->zc_nvlist_dst_size = count; 2695 else 2696 zc->zc_nvlist_dst_size = spa_get_errlog_size(spa); 2697 2698 spa_close(spa, FTAG); 2699 2700 return (error); 2701 } 2702 2703 static int 2704 zfs_ioc_clear(zfs_cmd_t *zc) 2705 { 2706 spa_t *spa; 2707 vdev_t *vd; 2708 int error; 2709 2710 /* 2711 * On zpool clear we also fix up missing slogs 2712 */ 2713 mutex_enter(&spa_namespace_lock); 2714 spa = spa_lookup(zc->zc_name); 2715 if (spa == NULL) { 2716 mutex_exit(&spa_namespace_lock); 2717 return (EIO); 2718 } 2719 if (spa->spa_log_state == SPA_LOG_MISSING) { 2720 /* we need to let spa_open/spa_load clear the chains */ 2721 spa->spa_log_state = SPA_LOG_CLEAR; 2722 } 2723 mutex_exit(&spa_namespace_lock); 2724 2725 if ((error = spa_open(zc->zc_name, &spa, FTAG)) != 0) 2726 return (error); 2727 2728 spa_vdev_state_enter(spa); 2729 2730 if (zc->zc_guid == 0) { 2731 vd = NULL; 2732 } else { 2733 vd = spa_lookup_by_guid(spa, zc->zc_guid, B_TRUE); 2734 if (vd == NULL) { 2735 (void) spa_vdev_state_exit(spa, NULL, ENODEV); 2736 spa_close(spa, FTAG); 2737 return (ENODEV); 2738 } 2739 } 2740 2741 vdev_clear(spa, vd); 2742 2743 (void) spa_vdev_state_exit(spa, NULL, 0); 2744 2745 /* 2746 * Resume any suspended I/Os. 2747 */ 2748 zio_resume(spa); 2749 2750 spa_close(spa, FTAG); 2751 2752 return (0); 2753 } 2754 2755 /* 2756 * inputs: 2757 * zc_name name of filesystem 2758 * zc_value name of origin snapshot 2759 * 2760 * outputs: none 2761 */ 2762 static int 2763 zfs_ioc_promote(zfs_cmd_t *zc) 2764 { 2765 char *cp; 2766 2767 /* 2768 * We don't need to unmount *all* the origin fs's snapshots, but 2769 * it's easier. 2770 */ 2771 cp = strchr(zc->zc_value, '@'); 2772 if (cp) 2773 *cp = '\0'; 2774 (void) dmu_objset_find(zc->zc_value, 2775 zfs_unmount_snap, NULL, DS_FIND_SNAPSHOTS); 2776 return (dsl_dataset_promote(zc->zc_name)); 2777 } 2778 2779 /* 2780 * We don't want to have a hard dependency 2781 * against some special symbols in sharefs 2782 * nfs, and smbsrv. Determine them if needed when 2783 * the first file system is shared. 2784 * Neither sharefs, nfs or smbsrv are unloadable modules. 2785 */ 2786 int (*znfsexport_fs)(void *arg); 2787 int (*zshare_fs)(enum sharefs_sys_op, share_t *, uint32_t); 2788 int (*zsmbexport_fs)(void *arg, boolean_t add_share); 2789 2790 int zfs_nfsshare_inited; 2791 int zfs_smbshare_inited; 2792 2793 ddi_modhandle_t nfs_mod; 2794 ddi_modhandle_t sharefs_mod; 2795 ddi_modhandle_t smbsrv_mod; 2796 kmutex_t zfs_share_lock; 2797 2798 static int 2799 zfs_init_sharefs() 2800 { 2801 int error; 2802 2803 ASSERT(MUTEX_HELD(&zfs_share_lock)); 2804 /* Both NFS and SMB shares also require sharetab support. */ 2805 if (sharefs_mod == NULL && ((sharefs_mod = 2806 ddi_modopen("fs/sharefs", 2807 KRTLD_MODE_FIRST, &error)) == NULL)) { 2808 return (ENOSYS); 2809 } 2810 if (zshare_fs == NULL && ((zshare_fs = 2811 (int (*)(enum sharefs_sys_op, share_t *, uint32_t)) 2812 ddi_modsym(sharefs_mod, "sharefs_impl", &error)) == NULL)) { 2813 return (ENOSYS); 2814 } 2815 return (0); 2816 } 2817 2818 static int 2819 zfs_ioc_share(zfs_cmd_t *zc) 2820 { 2821 int error; 2822 int opcode; 2823 2824 switch (zc->zc_share.z_sharetype) { 2825 case ZFS_SHARE_NFS: 2826 case ZFS_UNSHARE_NFS: 2827 if (zfs_nfsshare_inited == 0) { 2828 mutex_enter(&zfs_share_lock); 2829 if (nfs_mod == NULL && ((nfs_mod = ddi_modopen("fs/nfs", 2830 KRTLD_MODE_FIRST, &error)) == NULL)) { 2831 mutex_exit(&zfs_share_lock); 2832 return (ENOSYS); 2833 } 2834 if (znfsexport_fs == NULL && 2835 ((znfsexport_fs = (int (*)(void *)) 2836 ddi_modsym(nfs_mod, 2837 "nfs_export", &error)) == NULL)) { 2838 mutex_exit(&zfs_share_lock); 2839 return (ENOSYS); 2840 } 2841 error = zfs_init_sharefs(); 2842 if (error) { 2843 mutex_exit(&zfs_share_lock); 2844 return (ENOSYS); 2845 } 2846 zfs_nfsshare_inited = 1; 2847 mutex_exit(&zfs_share_lock); 2848 } 2849 break; 2850 case ZFS_SHARE_SMB: 2851 case ZFS_UNSHARE_SMB: 2852 if (zfs_smbshare_inited == 0) { 2853 mutex_enter(&zfs_share_lock); 2854 if (smbsrv_mod == NULL && ((smbsrv_mod = 2855 ddi_modopen("drv/smbsrv", 2856 KRTLD_MODE_FIRST, &error)) == NULL)) { 2857 mutex_exit(&zfs_share_lock); 2858 return (ENOSYS); 2859 } 2860 if (zsmbexport_fs == NULL && ((zsmbexport_fs = 2861 (int (*)(void *, boolean_t))ddi_modsym(smbsrv_mod, 2862 "smb_server_share", &error)) == NULL)) { 2863 mutex_exit(&zfs_share_lock); 2864 return (ENOSYS); 2865 } 2866 error = zfs_init_sharefs(); 2867 if (error) { 2868 mutex_exit(&zfs_share_lock); 2869 return (ENOSYS); 2870 } 2871 zfs_smbshare_inited = 1; 2872 mutex_exit(&zfs_share_lock); 2873 } 2874 break; 2875 default: 2876 return (EINVAL); 2877 } 2878 2879 switch (zc->zc_share.z_sharetype) { 2880 case ZFS_SHARE_NFS: 2881 case ZFS_UNSHARE_NFS: 2882 if (error = 2883 znfsexport_fs((void *) 2884 (uintptr_t)zc->zc_share.z_exportdata)) 2885 return (error); 2886 break; 2887 case ZFS_SHARE_SMB: 2888 case ZFS_UNSHARE_SMB: 2889 if (error = zsmbexport_fs((void *) 2890 (uintptr_t)zc->zc_share.z_exportdata, 2891 zc->zc_share.z_sharetype == ZFS_SHARE_SMB ? 2892 B_TRUE : B_FALSE)) { 2893 return (error); 2894 } 2895 break; 2896 } 2897 2898 opcode = (zc->zc_share.z_sharetype == ZFS_SHARE_NFS || 2899 zc->zc_share.z_sharetype == ZFS_SHARE_SMB) ? 2900 SHAREFS_ADD : SHAREFS_REMOVE; 2901 2902 /* 2903 * Add or remove share from sharetab 2904 */ 2905 error = zshare_fs(opcode, 2906 (void *)(uintptr_t)zc->zc_share.z_sharedata, 2907 zc->zc_share.z_sharemax); 2908 2909 return (error); 2910 2911 } 2912 2913 /* 2914 * pool create, destroy, and export don't log the history as part of 2915 * zfsdev_ioctl, but rather zfs_ioc_pool_create, and zfs_ioc_pool_export 2916 * do the logging of those commands. 2917 */ 2918 static zfs_ioc_vec_t zfs_ioc_vec[] = { 2919 { zfs_ioc_pool_create, zfs_secpolicy_config, POOL_NAME, B_FALSE }, 2920 { zfs_ioc_pool_destroy, zfs_secpolicy_config, POOL_NAME, B_FALSE }, 2921 { zfs_ioc_pool_import, zfs_secpolicy_config, POOL_NAME, B_TRUE }, 2922 { zfs_ioc_pool_export, zfs_secpolicy_config, POOL_NAME, B_FALSE }, 2923 { zfs_ioc_pool_configs, zfs_secpolicy_none, NO_NAME, B_FALSE }, 2924 { zfs_ioc_pool_stats, zfs_secpolicy_read, POOL_NAME, B_FALSE }, 2925 { zfs_ioc_pool_tryimport, zfs_secpolicy_config, NO_NAME, B_FALSE }, 2926 { zfs_ioc_pool_scrub, zfs_secpolicy_config, POOL_NAME, B_TRUE }, 2927 { zfs_ioc_pool_freeze, zfs_secpolicy_config, NO_NAME, B_FALSE }, 2928 { zfs_ioc_pool_upgrade, zfs_secpolicy_config, POOL_NAME, B_TRUE }, 2929 { zfs_ioc_pool_get_history, zfs_secpolicy_config, POOL_NAME, B_FALSE }, 2930 { zfs_ioc_vdev_add, zfs_secpolicy_config, POOL_NAME, B_TRUE }, 2931 { zfs_ioc_vdev_remove, zfs_secpolicy_config, POOL_NAME, B_TRUE }, 2932 { zfs_ioc_vdev_set_state, zfs_secpolicy_config, POOL_NAME, B_TRUE }, 2933 { zfs_ioc_vdev_attach, zfs_secpolicy_config, POOL_NAME, B_TRUE }, 2934 { zfs_ioc_vdev_detach, zfs_secpolicy_config, POOL_NAME, B_TRUE }, 2935 { zfs_ioc_vdev_setpath, zfs_secpolicy_config, POOL_NAME, B_FALSE }, 2936 { zfs_ioc_objset_stats, zfs_secpolicy_read, DATASET_NAME, B_FALSE }, 2937 { zfs_ioc_objset_zplprops, zfs_secpolicy_read, DATASET_NAME, B_FALSE }, 2938 { zfs_ioc_dataset_list_next, zfs_secpolicy_read, 2939 DATASET_NAME, B_FALSE }, 2940 { zfs_ioc_snapshot_list_next, zfs_secpolicy_read, 2941 DATASET_NAME, B_FALSE }, 2942 { zfs_ioc_set_prop, zfs_secpolicy_none, DATASET_NAME, B_TRUE }, 2943 { zfs_ioc_create_minor, zfs_secpolicy_minor, DATASET_NAME, B_FALSE }, 2944 { zfs_ioc_remove_minor, zfs_secpolicy_minor, DATASET_NAME, B_FALSE }, 2945 { zfs_ioc_create, zfs_secpolicy_create, DATASET_NAME, B_TRUE }, 2946 { zfs_ioc_destroy, zfs_secpolicy_destroy, DATASET_NAME, B_TRUE }, 2947 { zfs_ioc_rollback, zfs_secpolicy_rollback, DATASET_NAME, B_TRUE }, 2948 { zfs_ioc_rename, zfs_secpolicy_rename, DATASET_NAME, B_TRUE }, 2949 { zfs_ioc_recv, zfs_secpolicy_receive, DATASET_NAME, B_TRUE }, 2950 { zfs_ioc_send, zfs_secpolicy_send, DATASET_NAME, B_TRUE }, 2951 { zfs_ioc_inject_fault, zfs_secpolicy_inject, NO_NAME, B_FALSE }, 2952 { zfs_ioc_clear_fault, zfs_secpolicy_inject, NO_NAME, B_FALSE }, 2953 { zfs_ioc_inject_list_next, zfs_secpolicy_inject, NO_NAME, B_FALSE }, 2954 { zfs_ioc_error_log, zfs_secpolicy_inject, POOL_NAME, B_FALSE }, 2955 { zfs_ioc_clear, zfs_secpolicy_config, POOL_NAME, B_TRUE }, 2956 { zfs_ioc_promote, zfs_secpolicy_promote, DATASET_NAME, B_TRUE }, 2957 { zfs_ioc_destroy_snaps, zfs_secpolicy_destroy, DATASET_NAME, B_TRUE }, 2958 { zfs_ioc_snapshot, zfs_secpolicy_snapshot, DATASET_NAME, B_TRUE }, 2959 { zfs_ioc_dsobj_to_dsname, zfs_secpolicy_config, POOL_NAME, B_FALSE }, 2960 { zfs_ioc_obj_to_path, zfs_secpolicy_config, NO_NAME, B_FALSE }, 2961 { zfs_ioc_pool_set_props, zfs_secpolicy_config, POOL_NAME, B_TRUE }, 2962 { zfs_ioc_pool_get_props, zfs_secpolicy_read, POOL_NAME, B_FALSE }, 2963 { zfs_ioc_set_fsacl, zfs_secpolicy_fsacl, DATASET_NAME, B_TRUE }, 2964 { zfs_ioc_get_fsacl, zfs_secpolicy_read, DATASET_NAME, B_FALSE }, 2965 { zfs_ioc_iscsi_perm_check, zfs_secpolicy_iscsi, 2966 DATASET_NAME, B_FALSE }, 2967 { zfs_ioc_share, zfs_secpolicy_share, DATASET_NAME, B_FALSE }, 2968 { zfs_ioc_inherit_prop, zfs_secpolicy_inherit, DATASET_NAME, B_TRUE }, 2969 }; 2970 2971 static int 2972 zfsdev_ioctl(dev_t dev, int cmd, intptr_t arg, int flag, cred_t *cr, int *rvalp) 2973 { 2974 zfs_cmd_t *zc; 2975 uint_t vec; 2976 int error, rc; 2977 2978 if (getminor(dev) != 0) 2979 return (zvol_ioctl(dev, cmd, arg, flag, cr, rvalp)); 2980 2981 vec = cmd - ZFS_IOC; 2982 ASSERT3U(getmajor(dev), ==, ddi_driver_major(zfs_dip)); 2983 2984 if (vec >= sizeof (zfs_ioc_vec) / sizeof (zfs_ioc_vec[0])) 2985 return (EINVAL); 2986 2987 zc = kmem_zalloc(sizeof (zfs_cmd_t), KM_SLEEP); 2988 2989 error = xcopyin((void *)arg, zc, sizeof (zfs_cmd_t)); 2990 2991 if (error == 0) 2992 error = zfs_ioc_vec[vec].zvec_secpolicy(zc, cr); 2993 2994 /* 2995 * Ensure that all pool/dataset names are valid before we pass down to 2996 * the lower layers. 2997 */ 2998 if (error == 0) { 2999 zc->zc_name[sizeof (zc->zc_name) - 1] = '\0'; 3000 switch (zfs_ioc_vec[vec].zvec_namecheck) { 3001 case POOL_NAME: 3002 if (pool_namecheck(zc->zc_name, NULL, NULL) != 0) 3003 error = EINVAL; 3004 break; 3005 3006 case DATASET_NAME: 3007 if (dataset_namecheck(zc->zc_name, NULL, NULL) != 0) 3008 error = EINVAL; 3009 break; 3010 3011 case NO_NAME: 3012 break; 3013 } 3014 } 3015 3016 if (error == 0) 3017 error = zfs_ioc_vec[vec].zvec_func(zc); 3018 3019 rc = xcopyout(zc, (void *)arg, sizeof (zfs_cmd_t)); 3020 if (error == 0) { 3021 error = rc; 3022 if (zfs_ioc_vec[vec].zvec_his_log == B_TRUE) 3023 zfs_log_history(zc); 3024 } 3025 3026 kmem_free(zc, sizeof (zfs_cmd_t)); 3027 return (error); 3028 } 3029 3030 static int 3031 zfs_attach(dev_info_t *dip, ddi_attach_cmd_t cmd) 3032 { 3033 if (cmd != DDI_ATTACH) 3034 return (DDI_FAILURE); 3035 3036 if (ddi_create_minor_node(dip, "zfs", S_IFCHR, 0, 3037 DDI_PSEUDO, 0) == DDI_FAILURE) 3038 return (DDI_FAILURE); 3039 3040 zfs_dip = dip; 3041 3042 ddi_report_dev(dip); 3043 3044 return (DDI_SUCCESS); 3045 } 3046 3047 static int 3048 zfs_detach(dev_info_t *dip, ddi_detach_cmd_t cmd) 3049 { 3050 if (spa_busy() || zfs_busy() || zvol_busy()) 3051 return (DDI_FAILURE); 3052 3053 if (cmd != DDI_DETACH) 3054 return (DDI_FAILURE); 3055 3056 zfs_dip = NULL; 3057 3058 ddi_prop_remove_all(dip); 3059 ddi_remove_minor_node(dip, NULL); 3060 3061 return (DDI_SUCCESS); 3062 } 3063 3064 /*ARGSUSED*/ 3065 static int 3066 zfs_info(dev_info_t *dip, ddi_info_cmd_t infocmd, void *arg, void **result) 3067 { 3068 switch (infocmd) { 3069 case DDI_INFO_DEVT2DEVINFO: 3070 *result = zfs_dip; 3071 return (DDI_SUCCESS); 3072 3073 case DDI_INFO_DEVT2INSTANCE: 3074 *result = (void *)0; 3075 return (DDI_SUCCESS); 3076 } 3077 3078 return (DDI_FAILURE); 3079 } 3080 3081 /* 3082 * OK, so this is a little weird. 3083 * 3084 * /dev/zfs is the control node, i.e. minor 0. 3085 * /dev/zvol/[r]dsk/pool/dataset are the zvols, minor > 0. 3086 * 3087 * /dev/zfs has basically nothing to do except serve up ioctls, 3088 * so most of the standard driver entry points are in zvol.c. 3089 */ 3090 static struct cb_ops zfs_cb_ops = { 3091 zvol_open, /* open */ 3092 zvol_close, /* close */ 3093 zvol_strategy, /* strategy */ 3094 nodev, /* print */ 3095 zvol_dump, /* dump */ 3096 zvol_read, /* read */ 3097 zvol_write, /* write */ 3098 zfsdev_ioctl, /* ioctl */ 3099 nodev, /* devmap */ 3100 nodev, /* mmap */ 3101 nodev, /* segmap */ 3102 nochpoll, /* poll */ 3103 ddi_prop_op, /* prop_op */ 3104 NULL, /* streamtab */ 3105 D_NEW | D_MP | D_64BIT, /* Driver compatibility flag */ 3106 CB_REV, /* version */ 3107 nodev, /* async read */ 3108 nodev, /* async write */ 3109 }; 3110 3111 static struct dev_ops zfs_dev_ops = { 3112 DEVO_REV, /* version */ 3113 0, /* refcnt */ 3114 zfs_info, /* info */ 3115 nulldev, /* identify */ 3116 nulldev, /* probe */ 3117 zfs_attach, /* attach */ 3118 zfs_detach, /* detach */ 3119 nodev, /* reset */ 3120 &zfs_cb_ops, /* driver operations */ 3121 NULL, /* no bus operations */ 3122 NULL, /* power */ 3123 ddi_quiesce_not_needed, /* quiesce */ 3124 }; 3125 3126 static struct modldrv zfs_modldrv = { 3127 &mod_driverops, 3128 "ZFS storage pool", 3129 &zfs_dev_ops 3130 }; 3131 3132 static struct modlinkage modlinkage = { 3133 MODREV_1, 3134 (void *)&zfs_modlfs, 3135 (void *)&zfs_modldrv, 3136 NULL 3137 }; 3138 3139 3140 uint_t zfs_fsyncer_key; 3141 extern uint_t rrw_tsd_key; 3142 3143 int 3144 _init(void) 3145 { 3146 int error; 3147 3148 spa_init(FREAD | FWRITE); 3149 zfs_init(); 3150 zvol_init(); 3151 3152 if ((error = mod_install(&modlinkage)) != 0) { 3153 zvol_fini(); 3154 zfs_fini(); 3155 spa_fini(); 3156 return (error); 3157 } 3158 3159 tsd_create(&zfs_fsyncer_key, NULL); 3160 tsd_create(&rrw_tsd_key, NULL); 3161 3162 error = ldi_ident_from_mod(&modlinkage, &zfs_li); 3163 ASSERT(error == 0); 3164 mutex_init(&zfs_share_lock, NULL, MUTEX_DEFAULT, NULL); 3165 3166 return (0); 3167 } 3168 3169 int 3170 _fini(void) 3171 { 3172 int error; 3173 3174 if (spa_busy() || zfs_busy() || zvol_busy() || zio_injection_enabled) 3175 return (EBUSY); 3176 3177 if ((error = mod_remove(&modlinkage)) != 0) 3178 return (error); 3179 3180 zvol_fini(); 3181 zfs_fini(); 3182 spa_fini(); 3183 if (zfs_nfsshare_inited) 3184 (void) ddi_modclose(nfs_mod); 3185 if (zfs_smbshare_inited) 3186 (void) ddi_modclose(smbsrv_mod); 3187 if (zfs_nfsshare_inited || zfs_smbshare_inited) 3188 (void) ddi_modclose(sharefs_mod); 3189 3190 tsd_destroy(&zfs_fsyncer_key); 3191 ldi_ident_release(zfs_li); 3192 zfs_li = NULL; 3193 mutex_destroy(&zfs_share_lock); 3194 3195 return (error); 3196 } 3197 3198 int 3199 _info(struct modinfo *modinfop) 3200 { 3201 return (mod_info(&modlinkage, modinfop)); 3202 } 3203