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