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 #pragma ident "%Z%%M% %I% %E% SMI" 27 28 #include <sys/types.h> 29 #include <sys/param.h> 30 #include <sys/errno.h> 31 #include <sys/uio.h> 32 #include <sys/buf.h> 33 #include <sys/modctl.h> 34 #include <sys/open.h> 35 #include <sys/file.h> 36 #include <sys/kmem.h> 37 #include <sys/conf.h> 38 #include <sys/cmn_err.h> 39 #include <sys/stat.h> 40 #include <sys/zfs_ioctl.h> 41 #include <sys/zfs_znode.h> 42 #include <sys/zap.h> 43 #include <sys/spa.h> 44 #include <sys/spa_impl.h> 45 #include <sys/vdev.h> 46 #include <sys/vdev_impl.h> 47 #include <sys/dmu.h> 48 #include <sys/dsl_dir.h> 49 #include <sys/dsl_dataset.h> 50 #include <sys/dsl_prop.h> 51 #include <sys/dsl_deleg.h> 52 #include <sys/dmu_objset.h> 53 #include <sys/ddi.h> 54 #include <sys/sunddi.h> 55 #include <sys/sunldi.h> 56 #include <sys/policy.h> 57 #include <sys/zone.h> 58 #include <sys/nvpair.h> 59 #include <sys/pathname.h> 60 #include <sys/mount.h> 61 #include <sys/sdt.h> 62 #include <sys/fs/zfs.h> 63 #include <sys/zfs_ctldir.h> 64 #include <sys/zfs_dir.h> 65 #include <sys/zvol.h> 66 #include <sharefs/share.h> 67 #include <sys/dmu_objset.h> 68 69 #include "zfs_namecheck.h" 70 #include "zfs_prop.h" 71 #include "zfs_deleg.h" 72 73 extern struct modlfs zfs_modlfs; 74 75 extern void zfs_init(void); 76 extern void zfs_fini(void); 77 78 ldi_ident_t zfs_li = NULL; 79 dev_info_t *zfs_dip; 80 81 typedef int zfs_ioc_func_t(zfs_cmd_t *); 82 typedef int zfs_secpolicy_func_t(zfs_cmd_t *, cred_t *); 83 84 typedef struct zfs_ioc_vec { 85 zfs_ioc_func_t *zvec_func; 86 zfs_secpolicy_func_t *zvec_secpolicy; 87 enum { 88 NO_NAME, 89 POOL_NAME, 90 DATASET_NAME 91 } zvec_namecheck; 92 boolean_t zvec_his_log; 93 } zfs_ioc_vec_t; 94 95 /* _NOTE(PRINTFLIKE(4)) - this is printf-like, but lint is too whiney */ 96 void 97 __dprintf(const char *file, const char *func, int line, const char *fmt, ...) 98 { 99 const char *newfile; 100 char buf[256]; 101 va_list adx; 102 103 /* 104 * Get rid of annoying "../common/" prefix to filename. 105 */ 106 newfile = strrchr(file, '/'); 107 if (newfile != NULL) { 108 newfile = newfile + 1; /* Get rid of leading / */ 109 } else { 110 newfile = file; 111 } 112 113 va_start(adx, fmt); 114 (void) vsnprintf(buf, sizeof (buf), fmt, adx); 115 va_end(adx); 116 117 /* 118 * To get this data, use the zfs-dprintf probe as so: 119 * dtrace -q -n 'zfs-dprintf \ 120 * /stringof(arg0) == "dbuf.c"/ \ 121 * {printf("%s: %s", stringof(arg1), stringof(arg3))}' 122 * arg0 = file name 123 * arg1 = function name 124 * arg2 = line number 125 * arg3 = message 126 */ 127 DTRACE_PROBE4(zfs__dprintf, 128 char *, newfile, char *, func, int, line, char *, buf); 129 } 130 131 static void 132 history_str_free(char *buf) 133 { 134 kmem_free(buf, HIS_MAX_RECORD_LEN); 135 } 136 137 static char * 138 history_str_get(zfs_cmd_t *zc) 139 { 140 char *buf; 141 142 if (zc->zc_history == NULL) 143 return (NULL); 144 145 buf = kmem_alloc(HIS_MAX_RECORD_LEN, KM_SLEEP); 146 if (copyinstr((void *)(uintptr_t)zc->zc_history, 147 buf, HIS_MAX_RECORD_LEN, NULL) != 0) { 148 history_str_free(buf); 149 return (NULL); 150 } 151 152 buf[HIS_MAX_RECORD_LEN -1] = '\0'; 153 154 return (buf); 155 } 156 157 /* 158 * Check to see if the named dataset is currently defined as bootable 159 */ 160 static boolean_t 161 zfs_is_bootfs(const char *name) 162 { 163 spa_t *spa; 164 boolean_t ret = B_FALSE; 165 166 if (spa_open(name, &spa, FTAG) == 0) { 167 if (spa->spa_bootfs) { 168 objset_t *os; 169 170 if (dmu_objset_open(name, DMU_OST_ZFS, 171 DS_MODE_USER | DS_MODE_READONLY, &os) == 0) { 172 ret = (dmu_objset_id(os) == spa->spa_bootfs); 173 dmu_objset_close(os); 174 } 175 } 176 spa_close(spa, FTAG); 177 } 178 return (ret); 179 } 180 181 /* 182 * zfs_check_version 183 * 184 * Return non-zero if the spa version is less than requested version. 185 */ 186 static int 187 zfs_check_version(const char *name, int version) 188 { 189 190 spa_t *spa; 191 192 if (spa_open(name, &spa, FTAG) == 0) { 193 if (spa_version(spa) < version) { 194 spa_close(spa, FTAG); 195 return (1); 196 } 197 spa_close(spa, FTAG); 198 } 199 return (0); 200 } 201 202 /* 203 * zpl_earlier_version 204 * 205 * Return TRUE if the ZPL version is less than requested version. 206 */ 207 static boolean_t 208 zpl_earlier_version(const char *name, int version) 209 { 210 objset_t *os; 211 boolean_t rc = B_TRUE; 212 213 if (dmu_objset_open(name, DMU_OST_ANY, 214 DS_MODE_USER | DS_MODE_READONLY, &os) == 0) { 215 uint64_t zplversion; 216 217 if (zfs_get_zplprop(os, ZFS_PROP_VERSION, &zplversion) == 0) 218 rc = zplversion < version; 219 dmu_objset_close(os); 220 } 221 return (rc); 222 } 223 224 static void 225 zfs_log_history(zfs_cmd_t *zc) 226 { 227 spa_t *spa; 228 char *buf; 229 230 if ((buf = history_str_get(zc)) == NULL) 231 return; 232 233 if (spa_open(zc->zc_name, &spa, FTAG) == 0) { 234 if (spa_version(spa) >= SPA_VERSION_ZPOOL_HISTORY) 235 (void) spa_history_log(spa, buf, LOG_CMD_NORMAL); 236 spa_close(spa, FTAG); 237 } 238 history_str_free(buf); 239 } 240 241 /* 242 * Policy for top-level read operations (list pools). Requires no privileges, 243 * and can be used in the local zone, as there is no associated dataset. 244 */ 245 /* ARGSUSED */ 246 static int 247 zfs_secpolicy_none(zfs_cmd_t *zc, cred_t *cr) 248 { 249 return (0); 250 } 251 252 /* 253 * Policy for dataset read operations (list children, get statistics). Requires 254 * no privileges, but must be visible in the local zone. 255 */ 256 /* ARGSUSED */ 257 static int 258 zfs_secpolicy_read(zfs_cmd_t *zc, cred_t *cr) 259 { 260 if (INGLOBALZONE(curproc) || 261 zone_dataset_visible(zc->zc_name, NULL)) 262 return (0); 263 264 return (ENOENT); 265 } 266 267 static int 268 zfs_dozonecheck(const char *dataset, cred_t *cr) 269 { 270 uint64_t zoned; 271 int writable = 1; 272 273 /* 274 * The dataset must be visible by this zone -- check this first 275 * so they don't see EPERM on something they shouldn't know about. 276 */ 277 if (!INGLOBALZONE(curproc) && 278 !zone_dataset_visible(dataset, &writable)) 279 return (ENOENT); 280 281 if (dsl_prop_get_integer(dataset, "zoned", &zoned, NULL)) 282 return (ENOENT); 283 284 if (INGLOBALZONE(curproc)) { 285 /* 286 * If the fs is zoned, only root can access it from the 287 * global zone. 288 */ 289 if (secpolicy_zfs(cr) && zoned) 290 return (EPERM); 291 } else { 292 /* 293 * If we are in a local zone, the 'zoned' property must be set. 294 */ 295 if (!zoned) 296 return (EPERM); 297 298 /* must be writable by this zone */ 299 if (!writable) 300 return (EPERM); 301 } 302 return (0); 303 } 304 305 int 306 zfs_secpolicy_write_perms(const char *name, const char *perm, cred_t *cr) 307 { 308 int error; 309 310 error = zfs_dozonecheck(name, cr); 311 if (error == 0) { 312 error = secpolicy_zfs(cr); 313 if (error) 314 error = dsl_deleg_access(name, perm, cr); 315 } 316 return (error); 317 } 318 319 static int 320 zfs_secpolicy_setprop(const char *name, zfs_prop_t prop, cred_t *cr) 321 { 322 /* 323 * Check permissions for special properties. 324 */ 325 switch (prop) { 326 case ZFS_PROP_ZONED: 327 /* 328 * Disallow setting of 'zoned' from within a local zone. 329 */ 330 if (!INGLOBALZONE(curproc)) 331 return (EPERM); 332 break; 333 334 case ZFS_PROP_QUOTA: 335 if (!INGLOBALZONE(curproc)) { 336 uint64_t zoned; 337 char setpoint[MAXNAMELEN]; 338 /* 339 * Unprivileged users are allowed to modify the 340 * quota on things *under* (ie. contained by) 341 * the thing they own. 342 */ 343 if (dsl_prop_get_integer(name, "zoned", &zoned, 344 setpoint)) 345 return (EPERM); 346 if (!zoned || strlen(name) <= strlen(setpoint)) 347 return (EPERM); 348 } 349 break; 350 } 351 352 return (zfs_secpolicy_write_perms(name, zfs_prop_to_name(prop), cr)); 353 } 354 355 int 356 zfs_secpolicy_fsacl(zfs_cmd_t *zc, cred_t *cr) 357 { 358 int error; 359 360 error = zfs_dozonecheck(zc->zc_name, cr); 361 if (error) 362 return (error); 363 364 /* 365 * permission to set permissions will be evaluated later in 366 * dsl_deleg_can_allow() 367 */ 368 return (0); 369 } 370 371 int 372 zfs_secpolicy_rollback(zfs_cmd_t *zc, cred_t *cr) 373 { 374 int error; 375 error = zfs_secpolicy_write_perms(zc->zc_name, 376 ZFS_DELEG_PERM_ROLLBACK, cr); 377 if (error == 0) 378 error = zfs_secpolicy_write_perms(zc->zc_name, 379 ZFS_DELEG_PERM_MOUNT, cr); 380 return (error); 381 } 382 383 int 384 zfs_secpolicy_send(zfs_cmd_t *zc, cred_t *cr) 385 { 386 return (zfs_secpolicy_write_perms(zc->zc_name, 387 ZFS_DELEG_PERM_SEND, cr)); 388 } 389 390 int 391 zfs_secpolicy_share(zfs_cmd_t *zc, cred_t *cr) 392 { 393 if (!INGLOBALZONE(curproc)) 394 return (EPERM); 395 396 if (secpolicy_nfs(cr) == 0) { 397 return (0); 398 } else { 399 vnode_t *vp; 400 int error; 401 402 if ((error = lookupname(zc->zc_value, UIO_SYSSPACE, 403 NO_FOLLOW, NULL, &vp)) != 0) 404 return (error); 405 406 /* Now make sure mntpnt and dataset are ZFS */ 407 408 if (vp->v_vfsp->vfs_fstype != zfsfstype || 409 (strcmp((char *)refstr_value(vp->v_vfsp->vfs_resource), 410 zc->zc_name) != 0)) { 411 VN_RELE(vp); 412 return (EPERM); 413 } 414 415 VN_RELE(vp); 416 return (dsl_deleg_access(zc->zc_name, 417 ZFS_DELEG_PERM_SHARE, cr)); 418 } 419 } 420 421 static int 422 zfs_get_parent(const char *datasetname, char *parent, int parentsize) 423 { 424 char *cp; 425 426 /* 427 * Remove the @bla or /bla from the end of the name to get the parent. 428 */ 429 (void) strncpy(parent, datasetname, parentsize); 430 cp = strrchr(parent, '@'); 431 if (cp != NULL) { 432 cp[0] = '\0'; 433 } else { 434 cp = strrchr(parent, '/'); 435 if (cp == NULL) 436 return (ENOENT); 437 cp[0] = '\0'; 438 } 439 440 return (0); 441 } 442 443 int 444 zfs_secpolicy_destroy_perms(const char *name, cred_t *cr) 445 { 446 int error; 447 448 if ((error = zfs_secpolicy_write_perms(name, 449 ZFS_DELEG_PERM_MOUNT, cr)) != 0) 450 return (error); 451 452 return (zfs_secpolicy_write_perms(name, ZFS_DELEG_PERM_DESTROY, cr)); 453 } 454 455 static int 456 zfs_secpolicy_destroy(zfs_cmd_t *zc, cred_t *cr) 457 { 458 return (zfs_secpolicy_destroy_perms(zc->zc_name, cr)); 459 } 460 461 /* 462 * Must have sys_config privilege to check the iscsi permission 463 */ 464 /* ARGSUSED */ 465 static int 466 zfs_secpolicy_iscsi(zfs_cmd_t *zc, cred_t *cr) 467 { 468 return (secpolicy_zfs(cr)); 469 } 470 471 int 472 zfs_secpolicy_rename_perms(const char *from, const char *to, cred_t *cr) 473 { 474 char parentname[MAXNAMELEN]; 475 int error; 476 477 if ((error = zfs_secpolicy_write_perms(from, 478 ZFS_DELEG_PERM_RENAME, cr)) != 0) 479 return (error); 480 481 if ((error = zfs_secpolicy_write_perms(from, 482 ZFS_DELEG_PERM_MOUNT, cr)) != 0) 483 return (error); 484 485 if ((error = zfs_get_parent(to, parentname, 486 sizeof (parentname))) != 0) 487 return (error); 488 489 if ((error = zfs_secpolicy_write_perms(parentname, 490 ZFS_DELEG_PERM_CREATE, cr)) != 0) 491 return (error); 492 493 if ((error = zfs_secpolicy_write_perms(parentname, 494 ZFS_DELEG_PERM_MOUNT, cr)) != 0) 495 return (error); 496 497 return (error); 498 } 499 500 static int 501 zfs_secpolicy_rename(zfs_cmd_t *zc, cred_t *cr) 502 { 503 return (zfs_secpolicy_rename_perms(zc->zc_name, zc->zc_value, cr)); 504 } 505 506 static int 507 zfs_secpolicy_promote(zfs_cmd_t *zc, cred_t *cr) 508 { 509 char parentname[MAXNAMELEN]; 510 objset_t *clone; 511 int error; 512 513 error = zfs_secpolicy_write_perms(zc->zc_name, 514 ZFS_DELEG_PERM_PROMOTE, cr); 515 if (error) 516 return (error); 517 518 error = dmu_objset_open(zc->zc_name, DMU_OST_ANY, 519 DS_MODE_USER | DS_MODE_READONLY, &clone); 520 521 if (error == 0) { 522 dsl_dataset_t *pclone = NULL; 523 dsl_dir_t *dd; 524 dd = clone->os->os_dsl_dataset->ds_dir; 525 526 rw_enter(&dd->dd_pool->dp_config_rwlock, RW_READER); 527 error = dsl_dataset_hold_obj(dd->dd_pool, 528 dd->dd_phys->dd_origin_obj, FTAG, &pclone); 529 rw_exit(&dd->dd_pool->dp_config_rwlock); 530 if (error) { 531 dmu_objset_close(clone); 532 return (error); 533 } 534 535 error = zfs_secpolicy_write_perms(zc->zc_name, 536 ZFS_DELEG_PERM_MOUNT, cr); 537 538 dsl_dataset_name(pclone, parentname); 539 dmu_objset_close(clone); 540 dsl_dataset_rele(pclone, FTAG); 541 if (error == 0) 542 error = zfs_secpolicy_write_perms(parentname, 543 ZFS_DELEG_PERM_PROMOTE, cr); 544 } 545 return (error); 546 } 547 548 static int 549 zfs_secpolicy_receive(zfs_cmd_t *zc, cred_t *cr) 550 { 551 int error; 552 553 if ((error = zfs_secpolicy_write_perms(zc->zc_name, 554 ZFS_DELEG_PERM_RECEIVE, cr)) != 0) 555 return (error); 556 557 if ((error = zfs_secpolicy_write_perms(zc->zc_name, 558 ZFS_DELEG_PERM_MOUNT, cr)) != 0) 559 return (error); 560 561 return (zfs_secpolicy_write_perms(zc->zc_name, 562 ZFS_DELEG_PERM_CREATE, cr)); 563 } 564 565 int 566 zfs_secpolicy_snapshot_perms(const char *name, cred_t *cr) 567 { 568 int error; 569 570 if ((error = zfs_secpolicy_write_perms(name, 571 ZFS_DELEG_PERM_SNAPSHOT, cr)) != 0) 572 return (error); 573 574 error = zfs_secpolicy_write_perms(name, 575 ZFS_DELEG_PERM_MOUNT, cr); 576 577 return (error); 578 } 579 580 static int 581 zfs_secpolicy_snapshot(zfs_cmd_t *zc, cred_t *cr) 582 { 583 584 return (zfs_secpolicy_snapshot_perms(zc->zc_name, cr)); 585 } 586 587 static int 588 zfs_secpolicy_create(zfs_cmd_t *zc, cred_t *cr) 589 { 590 char parentname[MAXNAMELEN]; 591 int error; 592 593 if ((error = zfs_get_parent(zc->zc_name, parentname, 594 sizeof (parentname))) != 0) 595 return (error); 596 597 if (zc->zc_value[0] != '\0') { 598 if ((error = zfs_secpolicy_write_perms(zc->zc_value, 599 ZFS_DELEG_PERM_CLONE, cr)) != 0) 600 return (error); 601 } 602 603 if ((error = zfs_secpolicy_write_perms(parentname, 604 ZFS_DELEG_PERM_CREATE, cr)) != 0) 605 return (error); 606 607 error = zfs_secpolicy_write_perms(parentname, 608 ZFS_DELEG_PERM_MOUNT, cr); 609 610 return (error); 611 } 612 613 static int 614 zfs_secpolicy_umount(zfs_cmd_t *zc, cred_t *cr) 615 { 616 int error; 617 618 error = secpolicy_fs_unmount(cr, NULL); 619 if (error) { 620 error = dsl_deleg_access(zc->zc_name, ZFS_DELEG_PERM_MOUNT, cr); 621 } 622 return (error); 623 } 624 625 /* 626 * Policy for pool operations - create/destroy pools, add vdevs, etc. Requires 627 * SYS_CONFIG privilege, which is not available in a local zone. 628 */ 629 /* ARGSUSED */ 630 static int 631 zfs_secpolicy_config(zfs_cmd_t *zc, cred_t *cr) 632 { 633 if (secpolicy_sys_config(cr, B_FALSE) != 0) 634 return (EPERM); 635 636 return (0); 637 } 638 639 /* 640 * Just like zfs_secpolicy_config, except that we will check for 641 * mount permission on the dataset for permission to create/remove 642 * the minor nodes. 643 */ 644 static int 645 zfs_secpolicy_minor(zfs_cmd_t *zc, cred_t *cr) 646 { 647 if (secpolicy_sys_config(cr, B_FALSE) != 0) { 648 return (dsl_deleg_access(zc->zc_name, 649 ZFS_DELEG_PERM_MOUNT, cr)); 650 } 651 652 return (0); 653 } 654 655 /* 656 * Policy for fault injection. Requires all privileges. 657 */ 658 /* ARGSUSED */ 659 static int 660 zfs_secpolicy_inject(zfs_cmd_t *zc, cred_t *cr) 661 { 662 return (secpolicy_zinject(cr)); 663 } 664 665 static int 666 zfs_secpolicy_inherit(zfs_cmd_t *zc, cred_t *cr) 667 { 668 zfs_prop_t prop = zfs_name_to_prop(zc->zc_value); 669 670 if (prop == ZPROP_INVAL) { 671 if (!zfs_prop_user(zc->zc_value)) 672 return (EINVAL); 673 return (zfs_secpolicy_write_perms(zc->zc_name, 674 ZFS_DELEG_PERM_USERPROP, cr)); 675 } else { 676 if (!zfs_prop_inheritable(prop)) 677 return (EINVAL); 678 return (zfs_secpolicy_setprop(zc->zc_name, prop, cr)); 679 } 680 } 681 682 /* 683 * Returns the nvlist as specified by the user in the zfs_cmd_t. 684 */ 685 static int 686 get_nvlist(uint64_t nvl, uint64_t size, nvlist_t **nvp) 687 { 688 char *packed; 689 int error; 690 nvlist_t *list = NULL; 691 692 /* 693 * Read in and unpack the user-supplied nvlist. 694 */ 695 if (size == 0) 696 return (EINVAL); 697 698 packed = kmem_alloc(size, KM_SLEEP); 699 700 if ((error = xcopyin((void *)(uintptr_t)nvl, packed, size)) != 0) { 701 kmem_free(packed, size); 702 return (error); 703 } 704 705 if ((error = nvlist_unpack(packed, size, &list, 0)) != 0) { 706 kmem_free(packed, size); 707 return (error); 708 } 709 710 kmem_free(packed, size); 711 712 *nvp = list; 713 return (0); 714 } 715 716 static int 717 put_nvlist(zfs_cmd_t *zc, nvlist_t *nvl) 718 { 719 char *packed = NULL; 720 size_t size; 721 int error; 722 723 VERIFY(nvlist_size(nvl, &size, NV_ENCODE_NATIVE) == 0); 724 725 if (size > zc->zc_nvlist_dst_size) { 726 error = ENOMEM; 727 } else { 728 packed = kmem_alloc(size, KM_SLEEP); 729 VERIFY(nvlist_pack(nvl, &packed, &size, NV_ENCODE_NATIVE, 730 KM_SLEEP) == 0); 731 error = xcopyout(packed, (void *)(uintptr_t)zc->zc_nvlist_dst, 732 size); 733 kmem_free(packed, size); 734 } 735 736 zc->zc_nvlist_dst_size = size; 737 return (error); 738 } 739 740 static int 741 zfs_ioc_pool_create(zfs_cmd_t *zc) 742 { 743 int error; 744 nvlist_t *config, *props = NULL; 745 char *buf; 746 747 if (error = get_nvlist(zc->zc_nvlist_conf, zc->zc_nvlist_conf_size, 748 &config)) 749 return (error); 750 751 if (zc->zc_nvlist_src_size != 0 && (error = 752 get_nvlist(zc->zc_nvlist_src, zc->zc_nvlist_src_size, &props))) { 753 nvlist_free(config); 754 return (error); 755 } 756 757 buf = history_str_get(zc); 758 759 error = spa_create(zc->zc_name, config, props, buf); 760 761 if (buf != NULL) 762 history_str_free(buf); 763 764 nvlist_free(config); 765 766 if (props) 767 nvlist_free(props); 768 769 return (error); 770 } 771 772 static int 773 zfs_ioc_pool_destroy(zfs_cmd_t *zc) 774 { 775 int error; 776 zfs_log_history(zc); 777 error = spa_destroy(zc->zc_name); 778 return (error); 779 } 780 781 static int 782 zfs_ioc_pool_import(zfs_cmd_t *zc) 783 { 784 int error; 785 nvlist_t *config, *props = NULL; 786 uint64_t guid; 787 788 if ((error = get_nvlist(zc->zc_nvlist_conf, zc->zc_nvlist_conf_size, 789 &config)) != 0) 790 return (error); 791 792 if (zc->zc_nvlist_src_size != 0 && (error = 793 get_nvlist(zc->zc_nvlist_src, zc->zc_nvlist_src_size, &props))) { 794 nvlist_free(config); 795 return (error); 796 } 797 798 if (nvlist_lookup_uint64(config, ZPOOL_CONFIG_POOL_GUID, &guid) != 0 || 799 guid != zc->zc_guid) 800 error = EINVAL; 801 else if (zc->zc_cookie) 802 error = spa_import_faulted(zc->zc_name, config, 803 props); 804 else 805 error = spa_import(zc->zc_name, config, props); 806 807 nvlist_free(config); 808 809 if (props) 810 nvlist_free(props); 811 812 return (error); 813 } 814 815 static int 816 zfs_ioc_pool_export(zfs_cmd_t *zc) 817 { 818 int error; 819 zfs_log_history(zc); 820 error = spa_export(zc->zc_name, NULL); 821 return (error); 822 } 823 824 static int 825 zfs_ioc_pool_configs(zfs_cmd_t *zc) 826 { 827 nvlist_t *configs; 828 int error; 829 830 if ((configs = spa_all_configs(&zc->zc_cookie)) == NULL) 831 return (EEXIST); 832 833 error = put_nvlist(zc, configs); 834 835 nvlist_free(configs); 836 837 return (error); 838 } 839 840 static int 841 zfs_ioc_pool_stats(zfs_cmd_t *zc) 842 { 843 nvlist_t *config; 844 int error; 845 int ret = 0; 846 847 error = spa_get_stats(zc->zc_name, &config, zc->zc_value, 848 sizeof (zc->zc_value)); 849 850 if (config != NULL) { 851 ret = put_nvlist(zc, config); 852 nvlist_free(config); 853 854 /* 855 * The config may be present even if 'error' is non-zero. 856 * In this case we return success, and preserve the real errno 857 * in 'zc_cookie'. 858 */ 859 zc->zc_cookie = error; 860 } else { 861 ret = error; 862 } 863 864 return (ret); 865 } 866 867 /* 868 * Try to import the given pool, returning pool stats as appropriate so that 869 * user land knows which devices are available and overall pool health. 870 */ 871 static int 872 zfs_ioc_pool_tryimport(zfs_cmd_t *zc) 873 { 874 nvlist_t *tryconfig, *config; 875 int error; 876 877 if ((error = get_nvlist(zc->zc_nvlist_conf, zc->zc_nvlist_conf_size, 878 &tryconfig)) != 0) 879 return (error); 880 881 config = spa_tryimport(tryconfig); 882 883 nvlist_free(tryconfig); 884 885 if (config == NULL) 886 return (EINVAL); 887 888 error = put_nvlist(zc, config); 889 nvlist_free(config); 890 891 return (error); 892 } 893 894 static int 895 zfs_ioc_pool_scrub(zfs_cmd_t *zc) 896 { 897 spa_t *spa; 898 int error; 899 900 if ((error = spa_open(zc->zc_name, &spa, FTAG)) != 0) 901 return (error); 902 903 error = spa_scrub(spa, zc->zc_cookie); 904 905 spa_close(spa, FTAG); 906 907 return (error); 908 } 909 910 static int 911 zfs_ioc_pool_freeze(zfs_cmd_t *zc) 912 { 913 spa_t *spa; 914 int error; 915 916 error = spa_open(zc->zc_name, &spa, FTAG); 917 if (error == 0) { 918 spa_freeze(spa); 919 spa_close(spa, FTAG); 920 } 921 return (error); 922 } 923 924 static int 925 zfs_ioc_pool_upgrade(zfs_cmd_t *zc) 926 { 927 spa_t *spa; 928 int error; 929 930 if ((error = spa_open(zc->zc_name, &spa, FTAG)) != 0) 931 return (error); 932 933 if (zc->zc_cookie < spa_version(spa) || zc->zc_cookie > SPA_VERSION) { 934 spa_close(spa, FTAG); 935 return (EINVAL); 936 } 937 938 spa_upgrade(spa, zc->zc_cookie); 939 spa_close(spa, FTAG); 940 941 return (error); 942 } 943 944 static int 945 zfs_ioc_pool_get_history(zfs_cmd_t *zc) 946 { 947 spa_t *spa; 948 char *hist_buf; 949 uint64_t size; 950 int error; 951 952 if ((size = zc->zc_history_len) == 0) 953 return (EINVAL); 954 955 if ((error = spa_open(zc->zc_name, &spa, FTAG)) != 0) 956 return (error); 957 958 if (spa_version(spa) < SPA_VERSION_ZPOOL_HISTORY) { 959 spa_close(spa, FTAG); 960 return (ENOTSUP); 961 } 962 963 hist_buf = kmem_alloc(size, KM_SLEEP); 964 if ((error = spa_history_get(spa, &zc->zc_history_offset, 965 &zc->zc_history_len, hist_buf)) == 0) { 966 error = xcopyout(hist_buf, 967 (char *)(uintptr_t)zc->zc_history, 968 zc->zc_history_len); 969 } 970 971 spa_close(spa, FTAG); 972 kmem_free(hist_buf, size); 973 return (error); 974 } 975 976 static int 977 zfs_ioc_dsobj_to_dsname(zfs_cmd_t *zc) 978 { 979 int error; 980 981 if (error = dsl_dsobj_to_dsname(zc->zc_name, zc->zc_obj, zc->zc_value)) 982 return (error); 983 984 return (0); 985 } 986 987 static int 988 zfs_ioc_obj_to_path(zfs_cmd_t *zc) 989 { 990 objset_t *osp; 991 int error; 992 993 if ((error = dmu_objset_open(zc->zc_name, DMU_OST_ZFS, 994 DS_MODE_USER | DS_MODE_READONLY, &osp)) != 0) 995 return (error); 996 error = zfs_obj_to_path(osp, zc->zc_obj, zc->zc_value, 997 sizeof (zc->zc_value)); 998 dmu_objset_close(osp); 999 1000 return (error); 1001 } 1002 1003 static int 1004 zfs_ioc_vdev_add(zfs_cmd_t *zc) 1005 { 1006 spa_t *spa; 1007 int error; 1008 nvlist_t *config, **l2cache, **spares; 1009 uint_t nl2cache = 0, nspares = 0; 1010 1011 error = spa_open(zc->zc_name, &spa, FTAG); 1012 if (error != 0) 1013 return (error); 1014 1015 error = get_nvlist(zc->zc_nvlist_conf, zc->zc_nvlist_conf_size, 1016 &config); 1017 (void) nvlist_lookup_nvlist_array(config, ZPOOL_CONFIG_L2CACHE, 1018 &l2cache, &nl2cache); 1019 1020 (void) nvlist_lookup_nvlist_array(config, ZPOOL_CONFIG_SPARES, 1021 &spares, &nspares); 1022 1023 /* 1024 * A root pool with concatenated devices is not supported. 1025 * Thus, can not add a device to a root pool. 1026 * 1027 * Intent log device can not be added to a rootpool because 1028 * during mountroot, zil is replayed, a seperated log device 1029 * can not be accessed during the mountroot time. 1030 * 1031 * l2cache and spare devices are ok to be added to a rootpool. 1032 */ 1033 if (spa->spa_bootfs != 0 && nl2cache == 0 && nspares == 0) { 1034 spa_close(spa, FTAG); 1035 return (EDOM); 1036 } 1037 1038 if (error == 0) { 1039 error = spa_vdev_add(spa, config); 1040 nvlist_free(config); 1041 } 1042 spa_close(spa, FTAG); 1043 return (error); 1044 } 1045 1046 static int 1047 zfs_ioc_vdev_remove(zfs_cmd_t *zc) 1048 { 1049 spa_t *spa; 1050 int error; 1051 1052 error = spa_open(zc->zc_name, &spa, FTAG); 1053 if (error != 0) 1054 return (error); 1055 error = spa_vdev_remove(spa, zc->zc_guid, B_FALSE); 1056 spa_close(spa, FTAG); 1057 return (error); 1058 } 1059 1060 static int 1061 zfs_ioc_vdev_set_state(zfs_cmd_t *zc) 1062 { 1063 spa_t *spa; 1064 int error; 1065 vdev_state_t newstate = VDEV_STATE_UNKNOWN; 1066 1067 if ((error = spa_open(zc->zc_name, &spa, FTAG)) != 0) 1068 return (error); 1069 switch (zc->zc_cookie) { 1070 case VDEV_STATE_ONLINE: 1071 error = vdev_online(spa, zc->zc_guid, zc->zc_obj, &newstate); 1072 break; 1073 1074 case VDEV_STATE_OFFLINE: 1075 error = vdev_offline(spa, zc->zc_guid, zc->zc_obj); 1076 break; 1077 1078 case VDEV_STATE_FAULTED: 1079 error = vdev_fault(spa, zc->zc_guid); 1080 break; 1081 1082 case VDEV_STATE_DEGRADED: 1083 error = vdev_degrade(spa, zc->zc_guid); 1084 break; 1085 1086 default: 1087 error = EINVAL; 1088 } 1089 zc->zc_cookie = newstate; 1090 spa_close(spa, FTAG); 1091 return (error); 1092 } 1093 1094 static int 1095 zfs_ioc_vdev_attach(zfs_cmd_t *zc) 1096 { 1097 spa_t *spa; 1098 int replacing = zc->zc_cookie; 1099 nvlist_t *config; 1100 int error; 1101 1102 if ((error = spa_open(zc->zc_name, &spa, FTAG)) != 0) 1103 return (error); 1104 1105 if ((error = get_nvlist(zc->zc_nvlist_conf, zc->zc_nvlist_conf_size, 1106 &config)) == 0) { 1107 error = spa_vdev_attach(spa, zc->zc_guid, config, replacing); 1108 nvlist_free(config); 1109 } 1110 1111 spa_close(spa, FTAG); 1112 return (error); 1113 } 1114 1115 static int 1116 zfs_ioc_vdev_detach(zfs_cmd_t *zc) 1117 { 1118 spa_t *spa; 1119 int error; 1120 1121 if ((error = spa_open(zc->zc_name, &spa, FTAG)) != 0) 1122 return (error); 1123 1124 error = spa_vdev_detach(spa, zc->zc_guid, B_FALSE); 1125 1126 spa_close(spa, FTAG); 1127 return (error); 1128 } 1129 1130 static int 1131 zfs_ioc_vdev_setpath(zfs_cmd_t *zc) 1132 { 1133 spa_t *spa; 1134 char *path = zc->zc_value; 1135 uint64_t guid = zc->zc_guid; 1136 int error; 1137 1138 error = spa_open(zc->zc_name, &spa, FTAG); 1139 if (error != 0) 1140 return (error); 1141 1142 error = spa_vdev_setpath(spa, guid, path); 1143 spa_close(spa, FTAG); 1144 return (error); 1145 } 1146 1147 /* 1148 * inputs: 1149 * zc_name name of filesystem 1150 * zc_nvlist_dst_size size of buffer for property nvlist 1151 * 1152 * outputs: 1153 * zc_objset_stats stats 1154 * zc_nvlist_dst property nvlist 1155 * zc_nvlist_dst_size size of property nvlist 1156 */ 1157 static int 1158 zfs_ioc_objset_stats(zfs_cmd_t *zc) 1159 { 1160 objset_t *os = NULL; 1161 int error; 1162 nvlist_t *nv; 1163 1164 if (error = dmu_objset_open(zc->zc_name, 1165 DMU_OST_ANY, DS_MODE_USER | DS_MODE_READONLY, &os)) 1166 return (error); 1167 1168 dmu_objset_fast_stat(os, &zc->zc_objset_stats); 1169 1170 if (zc->zc_nvlist_dst != 0 && 1171 (error = dsl_prop_get_all(os, &nv, FALSE)) == 0) { 1172 dmu_objset_stats(os, nv); 1173 /* 1174 * NB: zvol_get_stats() will read the objset contents, 1175 * which we aren't supposed to do with a 1176 * DS_MODE_USER hold, because it could be 1177 * inconsistent. So this is a bit of a workaround... 1178 */ 1179 if (!zc->zc_objset_stats.dds_inconsistent) { 1180 if (dmu_objset_type(os) == DMU_OST_ZVOL) 1181 VERIFY(zvol_get_stats(os, nv) == 0); 1182 } 1183 error = put_nvlist(zc, nv); 1184 nvlist_free(nv); 1185 } 1186 1187 dmu_objset_close(os); 1188 return (error); 1189 } 1190 1191 static int 1192 nvl_add_zplprop(objset_t *os, nvlist_t *props, zfs_prop_t prop) 1193 { 1194 uint64_t value; 1195 int error; 1196 1197 /* 1198 * zfs_get_zplprop() will either find a value or give us 1199 * the default value (if there is one). 1200 */ 1201 if ((error = zfs_get_zplprop(os, prop, &value)) != 0) 1202 return (error); 1203 VERIFY(nvlist_add_uint64(props, zfs_prop_to_name(prop), value) == 0); 1204 return (0); 1205 } 1206 1207 /* 1208 * inputs: 1209 * zc_name name of filesystem 1210 * zc_nvlist_dst_size size of buffer for zpl property nvlist 1211 * 1212 * outputs: 1213 * zc_nvlist_dst zpl property nvlist 1214 * zc_nvlist_dst_size size of zpl property nvlist 1215 */ 1216 static int 1217 zfs_ioc_objset_zplprops(zfs_cmd_t *zc) 1218 { 1219 objset_t *os; 1220 int err; 1221 1222 if (err = dmu_objset_open(zc->zc_name, 1223 DMU_OST_ANY, DS_MODE_USER | DS_MODE_READONLY, &os)) 1224 return (err); 1225 1226 dmu_objset_fast_stat(os, &zc->zc_objset_stats); 1227 1228 /* 1229 * NB: nvl_add_zplprop() will read the objset contents, 1230 * which we aren't supposed to do with a DS_MODE_USER 1231 * hold, because it could be inconsistent. 1232 */ 1233 if (zc->zc_nvlist_dst != NULL && 1234 !zc->zc_objset_stats.dds_inconsistent && 1235 dmu_objset_type(os) == DMU_OST_ZFS) { 1236 nvlist_t *nv; 1237 1238 VERIFY(nvlist_alloc(&nv, NV_UNIQUE_NAME, KM_SLEEP) == 0); 1239 if ((err = nvl_add_zplprop(os, nv, ZFS_PROP_VERSION)) == 0 && 1240 (err = nvl_add_zplprop(os, nv, ZFS_PROP_NORMALIZE)) == 0 && 1241 (err = nvl_add_zplprop(os, nv, ZFS_PROP_UTF8ONLY)) == 0 && 1242 (err = nvl_add_zplprop(os, nv, ZFS_PROP_CASE)) == 0) 1243 err = put_nvlist(zc, nv); 1244 nvlist_free(nv); 1245 } else { 1246 err = ENOENT; 1247 } 1248 dmu_objset_close(os); 1249 return (err); 1250 } 1251 1252 /* 1253 * inputs: 1254 * zc_name name of filesystem 1255 * zc_cookie zap cursor 1256 * zc_nvlist_dst_size size of buffer for property nvlist 1257 * 1258 * outputs: 1259 * zc_name name of next filesystem 1260 * zc_objset_stats stats 1261 * zc_nvlist_dst property nvlist 1262 * zc_nvlist_dst_size size of property nvlist 1263 */ 1264 static int 1265 zfs_ioc_dataset_list_next(zfs_cmd_t *zc) 1266 { 1267 objset_t *os; 1268 int error; 1269 char *p; 1270 1271 if (error = dmu_objset_open(zc->zc_name, 1272 DMU_OST_ANY, DS_MODE_USER | DS_MODE_READONLY, &os)) { 1273 if (error == ENOENT) 1274 error = ESRCH; 1275 return (error); 1276 } 1277 1278 p = strrchr(zc->zc_name, '/'); 1279 if (p == NULL || p[1] != '\0') 1280 (void) strlcat(zc->zc_name, "/", sizeof (zc->zc_name)); 1281 p = zc->zc_name + strlen(zc->zc_name); 1282 1283 do { 1284 error = dmu_dir_list_next(os, 1285 sizeof (zc->zc_name) - (p - zc->zc_name), p, 1286 NULL, &zc->zc_cookie); 1287 if (error == ENOENT) 1288 error = ESRCH; 1289 } while (error == 0 && !INGLOBALZONE(curproc) && 1290 !zone_dataset_visible(zc->zc_name, NULL)); 1291 dmu_objset_close(os); 1292 1293 /* 1294 * If it's a hidden dataset (ie. with a '$' in its name), don't 1295 * try to get stats for it. Userland will skip over it. 1296 */ 1297 if (error == 0 && strchr(zc->zc_name, '$') == NULL) 1298 error = zfs_ioc_objset_stats(zc); /* fill in the stats */ 1299 1300 return (error); 1301 } 1302 1303 /* 1304 * inputs: 1305 * zc_name name of filesystem 1306 * zc_cookie zap cursor 1307 * zc_nvlist_dst_size size of buffer for property nvlist 1308 * 1309 * outputs: 1310 * zc_name name of next snapshot 1311 * zc_objset_stats stats 1312 * zc_nvlist_dst property nvlist 1313 * zc_nvlist_dst_size size of property nvlist 1314 */ 1315 static int 1316 zfs_ioc_snapshot_list_next(zfs_cmd_t *zc) 1317 { 1318 objset_t *os; 1319 int error; 1320 1321 error = dmu_objset_open(zc->zc_name, 1322 DMU_OST_ANY, DS_MODE_USER | DS_MODE_READONLY, &os); 1323 if (error) 1324 return (error == ENOENT ? ESRCH : error); 1325 1326 /* 1327 * A dataset name of maximum length cannot have any snapshots, 1328 * so exit immediately. 1329 */ 1330 if (strlcat(zc->zc_name, "@", sizeof (zc->zc_name)) >= MAXNAMELEN) { 1331 dmu_objset_close(os); 1332 return (ESRCH); 1333 } 1334 1335 error = dmu_snapshot_list_next(os, 1336 sizeof (zc->zc_name) - strlen(zc->zc_name), 1337 zc->zc_name + strlen(zc->zc_name), NULL, &zc->zc_cookie, NULL); 1338 dmu_objset_close(os); 1339 if (error == 0) 1340 error = zfs_ioc_objset_stats(zc); /* fill in the stats */ 1341 else if (error == ENOENT) 1342 error = ESRCH; 1343 1344 /* if we failed, undo the @ that we tacked on to zc_name */ 1345 if (error) 1346 *strchr(zc->zc_name, '@') = '\0'; 1347 return (error); 1348 } 1349 1350 int 1351 zfs_set_prop_nvlist(const char *name, nvlist_t *nvl) 1352 { 1353 nvpair_t *elem; 1354 int error; 1355 uint64_t intval; 1356 char *strval; 1357 1358 /* 1359 * First validate permission to set all of the properties 1360 */ 1361 elem = NULL; 1362 while ((elem = nvlist_next_nvpair(nvl, elem)) != NULL) { 1363 const char *propname = nvpair_name(elem); 1364 zfs_prop_t prop = zfs_name_to_prop(propname); 1365 1366 if (prop == ZPROP_INVAL) { 1367 /* 1368 * If this is a user-defined property, it must be a 1369 * string, and there is no further validation to do. 1370 */ 1371 if (!zfs_prop_user(propname) || 1372 nvpair_type(elem) != DATA_TYPE_STRING) 1373 return (EINVAL); 1374 1375 if (error = zfs_secpolicy_write_perms(name, 1376 ZFS_DELEG_PERM_USERPROP, CRED())) 1377 return (error); 1378 continue; 1379 } 1380 1381 if ((error = zfs_secpolicy_setprop(name, prop, CRED())) != 0) 1382 return (error); 1383 1384 /* 1385 * Check that this value is valid for this pool version 1386 */ 1387 switch (prop) { 1388 case ZFS_PROP_COMPRESSION: 1389 /* 1390 * If the user specified gzip compression, make sure 1391 * the SPA supports it. We ignore any errors here since 1392 * we'll catch them later. 1393 */ 1394 if (nvpair_type(elem) == DATA_TYPE_UINT64 && 1395 nvpair_value_uint64(elem, &intval) == 0) { 1396 if (intval >= ZIO_COMPRESS_GZIP_1 && 1397 intval <= ZIO_COMPRESS_GZIP_9 && 1398 zfs_check_version(name, 1399 SPA_VERSION_GZIP_COMPRESSION)) 1400 return (ENOTSUP); 1401 1402 /* 1403 * If this is a bootable dataset then 1404 * verify that the compression algorithm 1405 * is supported for booting. We must return 1406 * something other than ENOTSUP since it 1407 * implies a downrev pool version. 1408 */ 1409 if (zfs_is_bootfs(name) && 1410 !BOOTFS_COMPRESS_VALID(intval)) 1411 return (ERANGE); 1412 } 1413 break; 1414 1415 case ZFS_PROP_COPIES: 1416 if (zfs_check_version(name, SPA_VERSION_DITTO_BLOCKS)) 1417 return (ENOTSUP); 1418 break; 1419 1420 case ZFS_PROP_SHARESMB: 1421 if (zpl_earlier_version(name, ZPL_VERSION_FUID)) 1422 return (ENOTSUP); 1423 break; 1424 } 1425 if ((error = zfs_secpolicy_setprop(name, prop, CRED())) != 0) 1426 return (error); 1427 } 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 VERIFY(nvpair_value_string(elem, &strval) == 0); 1436 error = dsl_prop_set(name, propname, 1, 1437 strlen(strval) + 1, strval); 1438 if (error == 0) 1439 continue; 1440 else 1441 return (error); 1442 } 1443 1444 switch (prop) { 1445 case ZFS_PROP_QUOTA: 1446 if ((error = nvpair_value_uint64(elem, &intval)) != 0 || 1447 (error = dsl_dir_set_quota(name, intval)) != 0) 1448 return (error); 1449 break; 1450 1451 case ZFS_PROP_REFQUOTA: 1452 if ((error = nvpair_value_uint64(elem, &intval)) != 0 || 1453 (error = dsl_dataset_set_quota(name, intval)) != 0) 1454 return (error); 1455 break; 1456 1457 case ZFS_PROP_RESERVATION: 1458 if ((error = nvpair_value_uint64(elem, &intval)) != 0 || 1459 (error = dsl_dir_set_reservation(name, 1460 intval)) != 0) 1461 return (error); 1462 break; 1463 1464 case ZFS_PROP_REFRESERVATION: 1465 if ((error = nvpair_value_uint64(elem, &intval)) != 0 || 1466 (error = dsl_dataset_set_reservation(name, 1467 intval)) != 0) 1468 return (error); 1469 break; 1470 1471 case ZFS_PROP_VOLSIZE: 1472 if ((error = nvpair_value_uint64(elem, &intval)) != 0 || 1473 (error = zvol_set_volsize(name, 1474 ddi_driver_major(zfs_dip), intval)) != 0) 1475 return (error); 1476 break; 1477 1478 case ZFS_PROP_VOLBLOCKSIZE: 1479 if ((error = nvpair_value_uint64(elem, &intval)) != 0 || 1480 (error = zvol_set_volblocksize(name, intval)) != 0) 1481 return (error); 1482 break; 1483 1484 case ZFS_PROP_VERSION: 1485 if ((error = nvpair_value_uint64(elem, &intval)) != 0 || 1486 (error = zfs_set_version(name, intval)) != 0) 1487 return (error); 1488 break; 1489 1490 default: 1491 if (nvpair_type(elem) == DATA_TYPE_STRING) { 1492 if (zfs_prop_get_type(prop) != 1493 PROP_TYPE_STRING) 1494 return (EINVAL); 1495 VERIFY(nvpair_value_string(elem, &strval) == 0); 1496 if ((error = dsl_prop_set(name, 1497 nvpair_name(elem), 1, strlen(strval) + 1, 1498 strval)) != 0) 1499 return (error); 1500 } else if (nvpair_type(elem) == DATA_TYPE_UINT64) { 1501 const char *unused; 1502 1503 VERIFY(nvpair_value_uint64(elem, &intval) == 0); 1504 1505 switch (zfs_prop_get_type(prop)) { 1506 case PROP_TYPE_NUMBER: 1507 break; 1508 case PROP_TYPE_STRING: 1509 return (EINVAL); 1510 case PROP_TYPE_INDEX: 1511 if (zfs_prop_index_to_string(prop, 1512 intval, &unused) != 0) 1513 return (EINVAL); 1514 break; 1515 default: 1516 cmn_err(CE_PANIC, 1517 "unknown property type"); 1518 break; 1519 } 1520 1521 if ((error = dsl_prop_set(name, propname, 1522 8, 1, &intval)) != 0) 1523 return (error); 1524 } else { 1525 return (EINVAL); 1526 } 1527 break; 1528 } 1529 } 1530 1531 return (0); 1532 } 1533 1534 /* 1535 * inputs: 1536 * zc_name name of filesystem 1537 * zc_value name of property to inherit 1538 * zc_nvlist_src{_size} nvlist of properties to apply 1539 * 1540 * outputs: none 1541 */ 1542 static int 1543 zfs_ioc_set_prop(zfs_cmd_t *zc) 1544 { 1545 nvlist_t *nvl; 1546 int error; 1547 1548 if ((error = get_nvlist(zc->zc_nvlist_src, zc->zc_nvlist_src_size, 1549 &nvl)) != 0) 1550 return (error); 1551 1552 error = zfs_set_prop_nvlist(zc->zc_name, nvl); 1553 1554 nvlist_free(nvl); 1555 return (error); 1556 } 1557 1558 /* 1559 * inputs: 1560 * zc_name name of filesystem 1561 * zc_value name of property to inherit 1562 * 1563 * outputs: none 1564 */ 1565 static int 1566 zfs_ioc_inherit_prop(zfs_cmd_t *zc) 1567 { 1568 /* the property name has been validated by zfs_secpolicy_inherit() */ 1569 return (dsl_prop_set(zc->zc_name, zc->zc_value, 0, 0, NULL)); 1570 } 1571 1572 static int 1573 zfs_ioc_pool_set_props(zfs_cmd_t *zc) 1574 { 1575 nvlist_t *props; 1576 spa_t *spa; 1577 int error; 1578 1579 if ((error = get_nvlist(zc->zc_nvlist_src, zc->zc_nvlist_src_size, 1580 &props))) 1581 return (error); 1582 1583 if ((error = spa_open(zc->zc_name, &spa, FTAG)) != 0) { 1584 nvlist_free(props); 1585 return (error); 1586 } 1587 1588 error = spa_prop_set(spa, props); 1589 1590 nvlist_free(props); 1591 spa_close(spa, FTAG); 1592 1593 return (error); 1594 } 1595 1596 static int 1597 zfs_ioc_pool_get_props(zfs_cmd_t *zc) 1598 { 1599 spa_t *spa; 1600 int error; 1601 nvlist_t *nvp = NULL; 1602 1603 if ((error = spa_open(zc->zc_name, &spa, FTAG)) != 0) 1604 return (error); 1605 1606 error = spa_prop_get(spa, &nvp); 1607 1608 if (error == 0 && zc->zc_nvlist_dst != NULL) 1609 error = put_nvlist(zc, nvp); 1610 else 1611 error = EFAULT; 1612 1613 spa_close(spa, FTAG); 1614 1615 if (nvp) 1616 nvlist_free(nvp); 1617 return (error); 1618 } 1619 1620 static int 1621 zfs_ioc_iscsi_perm_check(zfs_cmd_t *zc) 1622 { 1623 nvlist_t *nvp; 1624 int error; 1625 uint32_t uid; 1626 uint32_t gid; 1627 uint32_t *groups; 1628 uint_t group_cnt; 1629 cred_t *usercred; 1630 1631 if ((error = get_nvlist(zc->zc_nvlist_src, zc->zc_nvlist_src_size, 1632 &nvp)) != 0) { 1633 return (error); 1634 } 1635 1636 if ((error = nvlist_lookup_uint32(nvp, 1637 ZFS_DELEG_PERM_UID, &uid)) != 0) { 1638 nvlist_free(nvp); 1639 return (EPERM); 1640 } 1641 1642 if ((error = nvlist_lookup_uint32(nvp, 1643 ZFS_DELEG_PERM_GID, &gid)) != 0) { 1644 nvlist_free(nvp); 1645 return (EPERM); 1646 } 1647 1648 if ((error = nvlist_lookup_uint32_array(nvp, ZFS_DELEG_PERM_GROUPS, 1649 &groups, &group_cnt)) != 0) { 1650 nvlist_free(nvp); 1651 return (EPERM); 1652 } 1653 usercred = cralloc(); 1654 if ((crsetugid(usercred, uid, gid) != 0) || 1655 (crsetgroups(usercred, group_cnt, (gid_t *)groups) != 0)) { 1656 nvlist_free(nvp); 1657 crfree(usercred); 1658 return (EPERM); 1659 } 1660 nvlist_free(nvp); 1661 error = dsl_deleg_access(zc->zc_name, 1662 zfs_prop_to_name(ZFS_PROP_SHAREISCSI), usercred); 1663 crfree(usercred); 1664 return (error); 1665 } 1666 1667 /* 1668 * inputs: 1669 * zc_name name of filesystem 1670 * zc_nvlist_src{_size} nvlist of delegated permissions 1671 * zc_perm_action allow/unallow flag 1672 * 1673 * outputs: none 1674 */ 1675 static int 1676 zfs_ioc_set_fsacl(zfs_cmd_t *zc) 1677 { 1678 int error; 1679 nvlist_t *fsaclnv = NULL; 1680 1681 if ((error = get_nvlist(zc->zc_nvlist_src, zc->zc_nvlist_src_size, 1682 &fsaclnv)) != 0) 1683 return (error); 1684 1685 /* 1686 * Verify nvlist is constructed correctly 1687 */ 1688 if ((error = zfs_deleg_verify_nvlist(fsaclnv)) != 0) { 1689 nvlist_free(fsaclnv); 1690 return (EINVAL); 1691 } 1692 1693 /* 1694 * If we don't have PRIV_SYS_MOUNT, then validate 1695 * that user is allowed to hand out each permission in 1696 * the nvlist(s) 1697 */ 1698 1699 error = secpolicy_zfs(CRED()); 1700 if (error) { 1701 if (zc->zc_perm_action == B_FALSE) { 1702 error = dsl_deleg_can_allow(zc->zc_name, 1703 fsaclnv, CRED()); 1704 } else { 1705 error = dsl_deleg_can_unallow(zc->zc_name, 1706 fsaclnv, CRED()); 1707 } 1708 } 1709 1710 if (error == 0) 1711 error = dsl_deleg_set(zc->zc_name, fsaclnv, zc->zc_perm_action); 1712 1713 nvlist_free(fsaclnv); 1714 return (error); 1715 } 1716 1717 /* 1718 * inputs: 1719 * zc_name name of filesystem 1720 * 1721 * outputs: 1722 * zc_nvlist_src{_size} nvlist of delegated permissions 1723 */ 1724 static int 1725 zfs_ioc_get_fsacl(zfs_cmd_t *zc) 1726 { 1727 nvlist_t *nvp; 1728 int error; 1729 1730 if ((error = dsl_deleg_get(zc->zc_name, &nvp)) == 0) { 1731 error = put_nvlist(zc, nvp); 1732 nvlist_free(nvp); 1733 } 1734 1735 return (error); 1736 } 1737 1738 /* 1739 * inputs: 1740 * zc_name name of volume 1741 * 1742 * outputs: none 1743 */ 1744 static int 1745 zfs_ioc_create_minor(zfs_cmd_t *zc) 1746 { 1747 return (zvol_create_minor(zc->zc_name, ddi_driver_major(zfs_dip))); 1748 } 1749 1750 /* 1751 * inputs: 1752 * zc_name name of volume 1753 * 1754 * outputs: none 1755 */ 1756 static int 1757 zfs_ioc_remove_minor(zfs_cmd_t *zc) 1758 { 1759 return (zvol_remove_minor(zc->zc_name)); 1760 } 1761 1762 /* 1763 * Search the vfs list for a specified resource. Returns a pointer to it 1764 * or NULL if no suitable entry is found. The caller of this routine 1765 * is responsible for releasing the returned vfs pointer. 1766 */ 1767 static vfs_t * 1768 zfs_get_vfs(const char *resource) 1769 { 1770 struct vfs *vfsp; 1771 struct vfs *vfs_found = NULL; 1772 1773 vfs_list_read_lock(); 1774 vfsp = rootvfs; 1775 do { 1776 if (strcmp(refstr_value(vfsp->vfs_resource), resource) == 0) { 1777 VFS_HOLD(vfsp); 1778 vfs_found = vfsp; 1779 break; 1780 } 1781 vfsp = vfsp->vfs_next; 1782 } while (vfsp != rootvfs); 1783 vfs_list_unlock(); 1784 return (vfs_found); 1785 } 1786 1787 /* ARGSUSED */ 1788 static void 1789 zfs_create_cb(objset_t *os, void *arg, cred_t *cr, dmu_tx_t *tx) 1790 { 1791 zfs_creat_t *zct = arg; 1792 1793 zfs_create_fs(os, cr, zct->zct_zplprops, tx); 1794 } 1795 1796 #define ZFS_PROP_UNDEFINED ((uint64_t)-1) 1797 1798 /* 1799 * inputs: 1800 * createprops list of properties requested by creator 1801 * dataset name of dataset we are creating 1802 * 1803 * outputs: 1804 * zplprops values for the zplprops we attach to the master node object 1805 * 1806 * Determine the settings for utf8only, normalization and 1807 * casesensitivity. Specific values may have been requested by the 1808 * creator and/or we can inherit values from the parent dataset. If 1809 * the file system is of too early a vintage, a creator can not 1810 * request settings for these properties, even if the requested 1811 * setting is the default value. We don't actually want to create dsl 1812 * properties for these, so remove them from the source nvlist after 1813 * processing. 1814 */ 1815 static int 1816 zfs_fill_zplprops(const char *dataset, nvlist_t *createprops, 1817 nvlist_t *zplprops, uint64_t zplver, boolean_t *is_ci) 1818 { 1819 objset_t *os; 1820 char parentname[MAXNAMELEN]; 1821 char *cp; 1822 uint64_t sense = ZFS_PROP_UNDEFINED; 1823 uint64_t norm = ZFS_PROP_UNDEFINED; 1824 uint64_t u8 = ZFS_PROP_UNDEFINED; 1825 int error = 0; 1826 1827 ASSERT(zplprops != NULL); 1828 1829 (void) strlcpy(parentname, dataset, sizeof (parentname)); 1830 cp = strrchr(parentname, '/'); 1831 ASSERT(cp != NULL); 1832 cp[0] = '\0'; 1833 1834 /* 1835 * Pull out creator prop choices, if any. 1836 */ 1837 if (createprops) { 1838 (void) nvlist_lookup_uint64(createprops, 1839 zfs_prop_to_name(ZFS_PROP_NORMALIZE), &norm); 1840 (void) nvlist_remove_all(createprops, 1841 zfs_prop_to_name(ZFS_PROP_NORMALIZE)); 1842 (void) nvlist_lookup_uint64(createprops, 1843 zfs_prop_to_name(ZFS_PROP_UTF8ONLY), &u8); 1844 (void) nvlist_remove_all(createprops, 1845 zfs_prop_to_name(ZFS_PROP_UTF8ONLY)); 1846 (void) nvlist_lookup_uint64(createprops, 1847 zfs_prop_to_name(ZFS_PROP_CASE), &sense); 1848 (void) nvlist_remove_all(createprops, 1849 zfs_prop_to_name(ZFS_PROP_CASE)); 1850 } 1851 1852 /* 1853 * If the file system or pool is version is too "young" to 1854 * support normalization and the creator tried to set a value 1855 * for one of the props, error out. We only need check the 1856 * ZPL version because we've already checked by now that the 1857 * SPA version is compatible with the selected ZPL version. 1858 */ 1859 if (zplver < ZPL_VERSION_NORMALIZATION && 1860 (norm != ZFS_PROP_UNDEFINED || u8 != ZFS_PROP_UNDEFINED || 1861 sense != ZFS_PROP_UNDEFINED)) 1862 return (ENOTSUP); 1863 1864 /* 1865 * Put the version in the zplprops 1866 */ 1867 VERIFY(nvlist_add_uint64(zplprops, 1868 zfs_prop_to_name(ZFS_PROP_VERSION), zplver) == 0); 1869 1870 /* 1871 * Open parent object set so we can inherit zplprop values if 1872 * necessary. 1873 */ 1874 if (error = dmu_objset_open(parentname, 1875 DMU_OST_ANY, DS_MODE_USER | DS_MODE_READONLY, &os)) 1876 return (error); 1877 1878 if (norm == ZFS_PROP_UNDEFINED) 1879 VERIFY(zfs_get_zplprop(os, ZFS_PROP_NORMALIZE, &norm) == 0); 1880 VERIFY(nvlist_add_uint64(zplprops, 1881 zfs_prop_to_name(ZFS_PROP_NORMALIZE), norm) == 0); 1882 1883 /* 1884 * If we're normalizing, names must always be valid UTF-8 strings. 1885 */ 1886 if (norm) 1887 u8 = 1; 1888 if (u8 == ZFS_PROP_UNDEFINED) 1889 VERIFY(zfs_get_zplprop(os, ZFS_PROP_UTF8ONLY, &u8) == 0); 1890 VERIFY(nvlist_add_uint64(zplprops, 1891 zfs_prop_to_name(ZFS_PROP_UTF8ONLY), u8) == 0); 1892 1893 if (sense == ZFS_PROP_UNDEFINED) 1894 VERIFY(zfs_get_zplprop(os, ZFS_PROP_CASE, &sense) == 0); 1895 VERIFY(nvlist_add_uint64(zplprops, 1896 zfs_prop_to_name(ZFS_PROP_CASE), sense) == 0); 1897 1898 if (is_ci) 1899 *is_ci = (sense == ZFS_CASE_INSENSITIVE); 1900 1901 dmu_objset_close(os); 1902 return (0); 1903 } 1904 1905 /* 1906 * inputs: 1907 * zc_objset_type type of objset to create (fs vs zvol) 1908 * zc_name name of new objset 1909 * zc_value name of snapshot to clone from (may be empty) 1910 * zc_nvlist_src{_size} nvlist of properties to apply 1911 * 1912 * outputs: none 1913 */ 1914 static int 1915 zfs_ioc_create(zfs_cmd_t *zc) 1916 { 1917 objset_t *clone; 1918 int error = 0; 1919 zfs_creat_t zct; 1920 nvlist_t *nvprops = NULL; 1921 void (*cbfunc)(objset_t *os, void *arg, cred_t *cr, dmu_tx_t *tx); 1922 dmu_objset_type_t type = zc->zc_objset_type; 1923 1924 switch (type) { 1925 1926 case DMU_OST_ZFS: 1927 cbfunc = zfs_create_cb; 1928 break; 1929 1930 case DMU_OST_ZVOL: 1931 cbfunc = zvol_create_cb; 1932 break; 1933 1934 default: 1935 cbfunc = NULL; 1936 break; 1937 } 1938 if (strchr(zc->zc_name, '@') || 1939 strchr(zc->zc_name, '%')) 1940 return (EINVAL); 1941 1942 if (zc->zc_nvlist_src != NULL && 1943 (error = get_nvlist(zc->zc_nvlist_src, zc->zc_nvlist_src_size, 1944 &nvprops)) != 0) 1945 return (error); 1946 1947 zct.zct_zplprops = NULL; 1948 zct.zct_props = nvprops; 1949 1950 if (zc->zc_value[0] != '\0') { 1951 /* 1952 * We're creating a clone of an existing snapshot. 1953 */ 1954 zc->zc_value[sizeof (zc->zc_value) - 1] = '\0'; 1955 if (dataset_namecheck(zc->zc_value, NULL, NULL) != 0) { 1956 nvlist_free(nvprops); 1957 return (EINVAL); 1958 } 1959 1960 error = dmu_objset_open(zc->zc_value, type, 1961 DS_MODE_USER | DS_MODE_READONLY, &clone); 1962 if (error) { 1963 nvlist_free(nvprops); 1964 return (error); 1965 } 1966 1967 error = dmu_objset_create(zc->zc_name, type, clone, 0, 1968 NULL, NULL); 1969 if (error) { 1970 dmu_objset_close(clone); 1971 nvlist_free(nvprops); 1972 return (error); 1973 } 1974 dmu_objset_close(clone); 1975 } else { 1976 boolean_t is_insensitive = B_FALSE; 1977 1978 if (cbfunc == NULL) { 1979 nvlist_free(nvprops); 1980 return (EINVAL); 1981 } 1982 1983 if (type == DMU_OST_ZVOL) { 1984 uint64_t volsize, volblocksize; 1985 1986 if (nvprops == NULL || 1987 nvlist_lookup_uint64(nvprops, 1988 zfs_prop_to_name(ZFS_PROP_VOLSIZE), 1989 &volsize) != 0) { 1990 nvlist_free(nvprops); 1991 return (EINVAL); 1992 } 1993 1994 if ((error = nvlist_lookup_uint64(nvprops, 1995 zfs_prop_to_name(ZFS_PROP_VOLBLOCKSIZE), 1996 &volblocksize)) != 0 && error != ENOENT) { 1997 nvlist_free(nvprops); 1998 return (EINVAL); 1999 } 2000 2001 if (error != 0) 2002 volblocksize = zfs_prop_default_numeric( 2003 ZFS_PROP_VOLBLOCKSIZE); 2004 2005 if ((error = zvol_check_volblocksize( 2006 volblocksize)) != 0 || 2007 (error = zvol_check_volsize(volsize, 2008 volblocksize)) != 0) { 2009 nvlist_free(nvprops); 2010 return (error); 2011 } 2012 } else if (type == DMU_OST_ZFS) { 2013 uint64_t version; 2014 int error; 2015 2016 /* 2017 * Default ZPL version to non-FUID capable if the 2018 * pool is not upgraded to support FUIDs. 2019 */ 2020 if (zfs_check_version(zc->zc_name, SPA_VERSION_FUID)) 2021 version = ZPL_VERSION_FUID - 1; 2022 else 2023 version = ZPL_VERSION; 2024 2025 /* 2026 * Potentially override default ZPL version based 2027 * on creator's request. 2028 */ 2029 (void) nvlist_lookup_uint64(nvprops, 2030 zfs_prop_to_name(ZFS_PROP_VERSION), &version); 2031 2032 /* 2033 * Make sure version we ended up with is kosher 2034 */ 2035 if ((version < ZPL_VERSION_INITIAL || 2036 version > ZPL_VERSION) || 2037 (version >= ZPL_VERSION_FUID && 2038 zfs_check_version(zc->zc_name, SPA_VERSION_FUID))) { 2039 nvlist_free(nvprops); 2040 return (ENOTSUP); 2041 } 2042 2043 /* 2044 * We have to have normalization and 2045 * case-folding flags correct when we do the 2046 * file system creation, so go figure them out 2047 * now. 2048 */ 2049 VERIFY(nvlist_alloc(&zct.zct_zplprops, 2050 NV_UNIQUE_NAME, KM_SLEEP) == 0); 2051 error = zfs_fill_zplprops(zc->zc_name, nvprops, 2052 zct.zct_zplprops, version, &is_insensitive); 2053 if (error != 0) { 2054 nvlist_free(nvprops); 2055 nvlist_free(zct.zct_zplprops); 2056 return (error); 2057 } 2058 } 2059 error = dmu_objset_create(zc->zc_name, type, NULL, 2060 is_insensitive ? DS_FLAG_CI_DATASET : 0, cbfunc, &zct); 2061 nvlist_free(zct.zct_zplprops); 2062 } 2063 2064 /* 2065 * It would be nice to do this atomically. 2066 */ 2067 if (error == 0) { 2068 if ((error = zfs_set_prop_nvlist(zc->zc_name, nvprops)) != 0) 2069 (void) dmu_objset_destroy(zc->zc_name); 2070 } 2071 nvlist_free(nvprops); 2072 return (error); 2073 } 2074 2075 /* 2076 * inputs: 2077 * zc_name name of filesystem 2078 * zc_value short name of snapshot 2079 * zc_cookie recursive flag 2080 * 2081 * outputs: none 2082 */ 2083 static int 2084 zfs_ioc_snapshot(zfs_cmd_t *zc) 2085 { 2086 if (snapshot_namecheck(zc->zc_value, NULL, NULL) != 0) 2087 return (EINVAL); 2088 return (dmu_objset_snapshot(zc->zc_name, 2089 zc->zc_value, zc->zc_cookie)); 2090 } 2091 2092 int 2093 zfs_unmount_snap(char *name, void *arg) 2094 { 2095 vfs_t *vfsp = NULL; 2096 2097 if (arg) { 2098 char *snapname = arg; 2099 int len = strlen(name) + strlen(snapname) + 2; 2100 char *buf = kmem_alloc(len, KM_SLEEP); 2101 2102 (void) strcpy(buf, name); 2103 (void) strcat(buf, "@"); 2104 (void) strcat(buf, snapname); 2105 vfsp = zfs_get_vfs(buf); 2106 kmem_free(buf, len); 2107 } else if (strchr(name, '@')) { 2108 vfsp = zfs_get_vfs(name); 2109 } 2110 2111 if (vfsp) { 2112 /* 2113 * Always force the unmount for snapshots. 2114 */ 2115 int flag = MS_FORCE; 2116 int err; 2117 2118 if ((err = vn_vfswlock(vfsp->vfs_vnodecovered)) != 0) { 2119 VFS_RELE(vfsp); 2120 return (err); 2121 } 2122 VFS_RELE(vfsp); 2123 if ((err = dounmount(vfsp, flag, kcred)) != 0) 2124 return (err); 2125 } 2126 return (0); 2127 } 2128 2129 /* 2130 * inputs: 2131 * zc_name name of filesystem 2132 * zc_value short name of snapshot 2133 * 2134 * outputs: none 2135 */ 2136 static int 2137 zfs_ioc_destroy_snaps(zfs_cmd_t *zc) 2138 { 2139 int err; 2140 2141 if (snapshot_namecheck(zc->zc_value, NULL, NULL) != 0) 2142 return (EINVAL); 2143 err = dmu_objset_find(zc->zc_name, 2144 zfs_unmount_snap, zc->zc_value, DS_FIND_CHILDREN); 2145 if (err) 2146 return (err); 2147 return (dmu_snapshots_destroy(zc->zc_name, zc->zc_value)); 2148 } 2149 2150 /* 2151 * inputs: 2152 * zc_name name of dataset to destroy 2153 * zc_objset_type type of objset 2154 * 2155 * outputs: none 2156 */ 2157 static int 2158 zfs_ioc_destroy(zfs_cmd_t *zc) 2159 { 2160 if (strchr(zc->zc_name, '@') && zc->zc_objset_type == DMU_OST_ZFS) { 2161 int err = zfs_unmount_snap(zc->zc_name, NULL); 2162 if (err) 2163 return (err); 2164 } 2165 2166 return (dmu_objset_destroy(zc->zc_name)); 2167 } 2168 2169 /* 2170 * inputs: 2171 * zc_name name of dataset to rollback (to most recent snapshot) 2172 * 2173 * outputs: none 2174 */ 2175 static int 2176 zfs_ioc_rollback(zfs_cmd_t *zc) 2177 { 2178 objset_t *os; 2179 int error; 2180 zfsvfs_t *zfsvfs = NULL; 2181 2182 /* 2183 * Get the zfsvfs for the receiving objset. There 2184 * won't be one if we're operating on a zvol, if the 2185 * objset doesn't exist yet, or is not mounted. 2186 */ 2187 error = dmu_objset_open(zc->zc_name, DMU_OST_ANY, DS_MODE_USER, &os); 2188 if (error) 2189 return (error); 2190 2191 if (dmu_objset_type(os) == DMU_OST_ZFS) { 2192 mutex_enter(&os->os->os_user_ptr_lock); 2193 zfsvfs = dmu_objset_get_user(os); 2194 if (zfsvfs != NULL) 2195 VFS_HOLD(zfsvfs->z_vfs); 2196 mutex_exit(&os->os->os_user_ptr_lock); 2197 } 2198 2199 if (zfsvfs != NULL) { 2200 char osname[MAXNAMELEN]; 2201 int mode; 2202 2203 error = zfs_suspend_fs(zfsvfs, osname, &mode); 2204 if (error == 0) { 2205 int resume_err; 2206 2207 ASSERT(strcmp(osname, zc->zc_name) == 0); 2208 error = dmu_objset_rollback(os); 2209 resume_err = zfs_resume_fs(zfsvfs, osname, mode); 2210 error = error ? error : resume_err; 2211 } else { 2212 dmu_objset_close(os); 2213 } 2214 VFS_RELE(zfsvfs->z_vfs); 2215 } else { 2216 error = dmu_objset_rollback(os); 2217 } 2218 /* Note, the dmu_objset_rollback() releases the objset for us. */ 2219 2220 return (error); 2221 } 2222 2223 /* 2224 * inputs: 2225 * zc_name old name of dataset 2226 * zc_value new name of dataset 2227 * zc_cookie recursive flag (only valid for snapshots) 2228 * 2229 * outputs: none 2230 */ 2231 static int 2232 zfs_ioc_rename(zfs_cmd_t *zc) 2233 { 2234 boolean_t recursive = zc->zc_cookie & 1; 2235 2236 zc->zc_value[sizeof (zc->zc_value) - 1] = '\0'; 2237 if (dataset_namecheck(zc->zc_value, NULL, NULL) != 0 || 2238 strchr(zc->zc_value, '%')) 2239 return (EINVAL); 2240 2241 /* 2242 * Unmount snapshot unless we're doing a recursive rename, 2243 * in which case the dataset code figures out which snapshots 2244 * to unmount. 2245 */ 2246 if (!recursive && strchr(zc->zc_name, '@') != NULL && 2247 zc->zc_objset_type == DMU_OST_ZFS) { 2248 int err = zfs_unmount_snap(zc->zc_name, NULL); 2249 if (err) 2250 return (err); 2251 } 2252 return (dmu_objset_rename(zc->zc_name, zc->zc_value, recursive)); 2253 } 2254 2255 static void 2256 clear_props(char *dataset, nvlist_t *props) 2257 { 2258 zfs_cmd_t *zc; 2259 nvpair_t *prop; 2260 2261 if (props == NULL) 2262 return; 2263 zc = kmem_alloc(sizeof (zfs_cmd_t), KM_SLEEP); 2264 (void) strcpy(zc->zc_name, dataset); 2265 for (prop = nvlist_next_nvpair(props, NULL); prop; 2266 prop = nvlist_next_nvpair(props, prop)) { 2267 (void) strcpy(zc->zc_value, nvpair_name(prop)); 2268 if (zfs_secpolicy_inherit(zc, CRED()) == 0) 2269 (void) zfs_ioc_inherit_prop(zc); 2270 } 2271 kmem_free(zc, sizeof (zfs_cmd_t)); 2272 } 2273 2274 /* 2275 * inputs: 2276 * zc_name name of containing filesystem 2277 * zc_nvlist_src{_size} nvlist of properties to apply 2278 * zc_value name of snapshot to create 2279 * zc_string name of clone origin (if DRR_FLAG_CLONE) 2280 * zc_cookie file descriptor to recv from 2281 * zc_begin_record the BEGIN record of the stream (not byteswapped) 2282 * zc_guid force flag 2283 * 2284 * outputs: 2285 * zc_cookie number of bytes read 2286 */ 2287 static int 2288 zfs_ioc_recv(zfs_cmd_t *zc) 2289 { 2290 file_t *fp; 2291 objset_t *os; 2292 dmu_recv_cookie_t drc; 2293 zfsvfs_t *zfsvfs = NULL; 2294 boolean_t force = (boolean_t)zc->zc_guid; 2295 int error, fd; 2296 offset_t off; 2297 nvlist_t *props = NULL; 2298 nvlist_t *origprops = NULL; 2299 objset_t *origin = NULL; 2300 char *tosnap; 2301 char tofs[ZFS_MAXNAMELEN]; 2302 2303 if (dataset_namecheck(zc->zc_value, NULL, NULL) != 0 || 2304 strchr(zc->zc_value, '@') == NULL || 2305 strchr(zc->zc_value, '%')) 2306 return (EINVAL); 2307 2308 (void) strcpy(tofs, zc->zc_value); 2309 tosnap = strchr(tofs, '@'); 2310 *tosnap = '\0'; 2311 tosnap++; 2312 2313 if (zc->zc_nvlist_src != NULL && 2314 (error = get_nvlist(zc->zc_nvlist_src, zc->zc_nvlist_src_size, 2315 &props)) != 0) 2316 return (error); 2317 2318 fd = zc->zc_cookie; 2319 fp = getf(fd); 2320 if (fp == NULL) { 2321 nvlist_free(props); 2322 return (EBADF); 2323 } 2324 2325 if (dmu_objset_open(tofs, DMU_OST_ANY, 2326 DS_MODE_USER | DS_MODE_READONLY, &os) == 0) { 2327 /* 2328 * Try to get the zfsvfs for the receiving objset. 2329 * There won't be one if we're operating on a zvol, 2330 * if the objset doesn't exist yet, or is not mounted. 2331 */ 2332 mutex_enter(&os->os->os_user_ptr_lock); 2333 if (zfsvfs = dmu_objset_get_user(os)) { 2334 if (!mutex_tryenter(&zfsvfs->z_online_recv_lock)) { 2335 mutex_exit(&os->os->os_user_ptr_lock); 2336 dmu_objset_close(os); 2337 zfsvfs = NULL; 2338 error = EBUSY; 2339 goto out; 2340 } 2341 VFS_HOLD(zfsvfs->z_vfs); 2342 } 2343 mutex_exit(&os->os->os_user_ptr_lock); 2344 2345 /* 2346 * If new properties are supplied, they are to completely 2347 * replace the existing ones, so stash away the existing ones. 2348 */ 2349 if (props) 2350 (void) dsl_prop_get_all(os, &origprops, TRUE); 2351 2352 dmu_objset_close(os); 2353 } 2354 2355 if (zc->zc_string[0]) { 2356 error = dmu_objset_open(zc->zc_string, DMU_OST_ANY, 2357 DS_MODE_USER | DS_MODE_READONLY, &origin); 2358 if (error) 2359 goto out; 2360 } 2361 2362 error = dmu_recv_begin(tofs, tosnap, &zc->zc_begin_record, 2363 force, origin, zfsvfs != NULL, &drc); 2364 if (origin) 2365 dmu_objset_close(origin); 2366 if (error) 2367 goto out; 2368 2369 /* 2370 * Reset properties. We do this before we receive the stream 2371 * so that the properties are applied to the new data. 2372 */ 2373 if (props) { 2374 clear_props(tofs, origprops); 2375 /* 2376 * XXX - Note, this is all-or-nothing; should be best-effort. 2377 */ 2378 (void) zfs_set_prop_nvlist(tofs, props); 2379 } 2380 2381 off = fp->f_offset; 2382 error = dmu_recv_stream(&drc, fp->f_vnode, &off); 2383 2384 if (error == 0 && zfsvfs) { 2385 char osname[MAXNAMELEN]; 2386 int mode; 2387 2388 /* online recv */ 2389 error = zfs_suspend_fs(zfsvfs, osname, &mode); 2390 if (error == 0) { 2391 int resume_err; 2392 2393 error = dmu_recv_end(&drc); 2394 resume_err = zfs_resume_fs(zfsvfs, osname, mode); 2395 error = error ? error : resume_err; 2396 } else { 2397 dmu_recv_abort_cleanup(&drc); 2398 } 2399 } else if (error == 0) { 2400 error = dmu_recv_end(&drc); 2401 } 2402 2403 zc->zc_cookie = off - fp->f_offset; 2404 if (VOP_SEEK(fp->f_vnode, fp->f_offset, &off, NULL) == 0) 2405 fp->f_offset = off; 2406 2407 /* 2408 * On error, restore the original props. 2409 */ 2410 if (error && props) { 2411 clear_props(tofs, props); 2412 (void) zfs_set_prop_nvlist(tofs, origprops); 2413 } 2414 out: 2415 if (zfsvfs) { 2416 mutex_exit(&zfsvfs->z_online_recv_lock); 2417 VFS_RELE(zfsvfs->z_vfs); 2418 } 2419 nvlist_free(props); 2420 nvlist_free(origprops); 2421 releasef(fd); 2422 return (error); 2423 } 2424 2425 /* 2426 * inputs: 2427 * zc_name name of snapshot to send 2428 * zc_value short name of incremental fromsnap (may be empty) 2429 * zc_cookie file descriptor to send stream to 2430 * zc_obj fromorigin flag (mutually exclusive with zc_value) 2431 * 2432 * outputs: none 2433 */ 2434 static int 2435 zfs_ioc_send(zfs_cmd_t *zc) 2436 { 2437 objset_t *fromsnap = NULL; 2438 objset_t *tosnap; 2439 file_t *fp; 2440 int error; 2441 offset_t off; 2442 2443 error = dmu_objset_open(zc->zc_name, DMU_OST_ANY, 2444 DS_MODE_USER | DS_MODE_READONLY, &tosnap); 2445 if (error) 2446 return (error); 2447 2448 if (zc->zc_value[0] != '\0') { 2449 char buf[MAXPATHLEN]; 2450 char *cp; 2451 2452 (void) strncpy(buf, zc->zc_name, sizeof (buf)); 2453 cp = strchr(buf, '@'); 2454 if (cp) 2455 *(cp+1) = 0; 2456 (void) strncat(buf, zc->zc_value, sizeof (buf)); 2457 error = dmu_objset_open(buf, DMU_OST_ANY, 2458 DS_MODE_USER | DS_MODE_READONLY, &fromsnap); 2459 if (error) { 2460 dmu_objset_close(tosnap); 2461 return (error); 2462 } 2463 } 2464 2465 fp = getf(zc->zc_cookie); 2466 if (fp == NULL) { 2467 dmu_objset_close(tosnap); 2468 if (fromsnap) 2469 dmu_objset_close(fromsnap); 2470 return (EBADF); 2471 } 2472 2473 off = fp->f_offset; 2474 error = dmu_sendbackup(tosnap, fromsnap, zc->zc_obj, fp->f_vnode, &off); 2475 2476 if (VOP_SEEK(fp->f_vnode, fp->f_offset, &off, NULL) == 0) 2477 fp->f_offset = off; 2478 releasef(zc->zc_cookie); 2479 if (fromsnap) 2480 dmu_objset_close(fromsnap); 2481 dmu_objset_close(tosnap); 2482 return (error); 2483 } 2484 2485 static int 2486 zfs_ioc_inject_fault(zfs_cmd_t *zc) 2487 { 2488 int id, error; 2489 2490 error = zio_inject_fault(zc->zc_name, (int)zc->zc_guid, &id, 2491 &zc->zc_inject_record); 2492 2493 if (error == 0) 2494 zc->zc_guid = (uint64_t)id; 2495 2496 return (error); 2497 } 2498 2499 static int 2500 zfs_ioc_clear_fault(zfs_cmd_t *zc) 2501 { 2502 return (zio_clear_fault((int)zc->zc_guid)); 2503 } 2504 2505 static int 2506 zfs_ioc_inject_list_next(zfs_cmd_t *zc) 2507 { 2508 int id = (int)zc->zc_guid; 2509 int error; 2510 2511 error = zio_inject_list_next(&id, zc->zc_name, sizeof (zc->zc_name), 2512 &zc->zc_inject_record); 2513 2514 zc->zc_guid = id; 2515 2516 return (error); 2517 } 2518 2519 static int 2520 zfs_ioc_error_log(zfs_cmd_t *zc) 2521 { 2522 spa_t *spa; 2523 int error; 2524 size_t count = (size_t)zc->zc_nvlist_dst_size; 2525 2526 if ((error = spa_open(zc->zc_name, &spa, FTAG)) != 0) 2527 return (error); 2528 2529 error = spa_get_errlog(spa, (void *)(uintptr_t)zc->zc_nvlist_dst, 2530 &count); 2531 if (error == 0) 2532 zc->zc_nvlist_dst_size = count; 2533 else 2534 zc->zc_nvlist_dst_size = spa_get_errlog_size(spa); 2535 2536 spa_close(spa, FTAG); 2537 2538 return (error); 2539 } 2540 2541 static int 2542 zfs_ioc_clear(zfs_cmd_t *zc) 2543 { 2544 spa_t *spa; 2545 vdev_t *vd; 2546 uint64_t txg; 2547 int error; 2548 2549 if ((error = spa_open(zc->zc_name, &spa, FTAG)) != 0) 2550 return (error); 2551 2552 /* 2553 * Try to resume any I/Os which may have been suspended 2554 * as a result of a complete pool failure. 2555 */ 2556 if (!list_is_empty(&spa->spa_zio_list)) { 2557 if (zio_vdev_resume_io(spa) != 0) { 2558 spa_close(spa, FTAG); 2559 return (EIO); 2560 } 2561 } 2562 2563 txg = spa_vdev_enter(spa); 2564 2565 if (zc->zc_guid == 0) { 2566 vd = NULL; 2567 } else { 2568 vd = spa_lookup_by_guid(spa, zc->zc_guid, B_TRUE); 2569 if (vd == NULL) { 2570 (void) spa_vdev_exit(spa, NULL, txg, ENODEV); 2571 spa_close(spa, FTAG); 2572 return (ENODEV); 2573 } 2574 } 2575 2576 vdev_clear(spa, vd, B_TRUE); 2577 2578 (void) spa_vdev_exit(spa, NULL, txg, 0); 2579 2580 spa_close(spa, FTAG); 2581 2582 return (0); 2583 } 2584 2585 /* 2586 * inputs: 2587 * zc_name name of filesystem 2588 * zc_value name of origin snapshot 2589 * 2590 * outputs: none 2591 */ 2592 static int 2593 zfs_ioc_promote(zfs_cmd_t *zc) 2594 { 2595 char *cp; 2596 2597 /* 2598 * We don't need to unmount *all* the origin fs's snapshots, but 2599 * it's easier. 2600 */ 2601 cp = strchr(zc->zc_value, '@'); 2602 if (cp) 2603 *cp = '\0'; 2604 (void) dmu_objset_find(zc->zc_value, 2605 zfs_unmount_snap, NULL, DS_FIND_SNAPSHOTS); 2606 return (dsl_dataset_promote(zc->zc_name)); 2607 } 2608 2609 /* 2610 * We don't want to have a hard dependency 2611 * against some special symbols in sharefs 2612 * nfs, and smbsrv. Determine them if needed when 2613 * the first file system is shared. 2614 * Neither sharefs, nfs or smbsrv are unloadable modules. 2615 */ 2616 int (*znfsexport_fs)(void *arg); 2617 int (*zshare_fs)(enum sharefs_sys_op, share_t *, uint32_t); 2618 int (*zsmbexport_fs)(void *arg, boolean_t add_share); 2619 2620 int zfs_nfsshare_inited; 2621 int zfs_smbshare_inited; 2622 2623 ddi_modhandle_t nfs_mod; 2624 ddi_modhandle_t sharefs_mod; 2625 ddi_modhandle_t smbsrv_mod; 2626 kmutex_t zfs_share_lock; 2627 2628 static int 2629 zfs_init_sharefs() 2630 { 2631 int error; 2632 2633 ASSERT(MUTEX_HELD(&zfs_share_lock)); 2634 /* Both NFS and SMB shares also require sharetab support. */ 2635 if (sharefs_mod == NULL && ((sharefs_mod = 2636 ddi_modopen("fs/sharefs", 2637 KRTLD_MODE_FIRST, &error)) == NULL)) { 2638 return (ENOSYS); 2639 } 2640 if (zshare_fs == NULL && ((zshare_fs = 2641 (int (*)(enum sharefs_sys_op, share_t *, uint32_t)) 2642 ddi_modsym(sharefs_mod, "sharefs_impl", &error)) == NULL)) { 2643 return (ENOSYS); 2644 } 2645 return (0); 2646 } 2647 2648 static int 2649 zfs_ioc_share(zfs_cmd_t *zc) 2650 { 2651 int error; 2652 int opcode; 2653 2654 switch (zc->zc_share.z_sharetype) { 2655 case ZFS_SHARE_NFS: 2656 case ZFS_UNSHARE_NFS: 2657 if (zfs_nfsshare_inited == 0) { 2658 mutex_enter(&zfs_share_lock); 2659 if (nfs_mod == NULL && ((nfs_mod = ddi_modopen("fs/nfs", 2660 KRTLD_MODE_FIRST, &error)) == NULL)) { 2661 mutex_exit(&zfs_share_lock); 2662 return (ENOSYS); 2663 } 2664 if (znfsexport_fs == NULL && 2665 ((znfsexport_fs = (int (*)(void *)) 2666 ddi_modsym(nfs_mod, 2667 "nfs_export", &error)) == NULL)) { 2668 mutex_exit(&zfs_share_lock); 2669 return (ENOSYS); 2670 } 2671 error = zfs_init_sharefs(); 2672 if (error) { 2673 mutex_exit(&zfs_share_lock); 2674 return (ENOSYS); 2675 } 2676 zfs_nfsshare_inited = 1; 2677 mutex_exit(&zfs_share_lock); 2678 } 2679 break; 2680 case ZFS_SHARE_SMB: 2681 case ZFS_UNSHARE_SMB: 2682 if (zfs_smbshare_inited == 0) { 2683 mutex_enter(&zfs_share_lock); 2684 if (smbsrv_mod == NULL && ((smbsrv_mod = 2685 ddi_modopen("drv/smbsrv", 2686 KRTLD_MODE_FIRST, &error)) == NULL)) { 2687 mutex_exit(&zfs_share_lock); 2688 return (ENOSYS); 2689 } 2690 if (zsmbexport_fs == NULL && ((zsmbexport_fs = 2691 (int (*)(void *, boolean_t))ddi_modsym(smbsrv_mod, 2692 "smb_server_share", &error)) == NULL)) { 2693 mutex_exit(&zfs_share_lock); 2694 return (ENOSYS); 2695 } 2696 error = zfs_init_sharefs(); 2697 if (error) { 2698 mutex_exit(&zfs_share_lock); 2699 return (ENOSYS); 2700 } 2701 zfs_smbshare_inited = 1; 2702 mutex_exit(&zfs_share_lock); 2703 } 2704 break; 2705 default: 2706 return (EINVAL); 2707 } 2708 2709 switch (zc->zc_share.z_sharetype) { 2710 case ZFS_SHARE_NFS: 2711 case ZFS_UNSHARE_NFS: 2712 if (error = 2713 znfsexport_fs((void *) 2714 (uintptr_t)zc->zc_share.z_exportdata)) 2715 return (error); 2716 break; 2717 case ZFS_SHARE_SMB: 2718 case ZFS_UNSHARE_SMB: 2719 if (error = zsmbexport_fs((void *) 2720 (uintptr_t)zc->zc_share.z_exportdata, 2721 zc->zc_share.z_sharetype == ZFS_SHARE_SMB ? 2722 B_TRUE : B_FALSE)) { 2723 return (error); 2724 } 2725 break; 2726 } 2727 2728 opcode = (zc->zc_share.z_sharetype == ZFS_SHARE_NFS || 2729 zc->zc_share.z_sharetype == ZFS_SHARE_SMB) ? 2730 SHAREFS_ADD : SHAREFS_REMOVE; 2731 2732 /* 2733 * Add or remove share from sharetab 2734 */ 2735 error = zshare_fs(opcode, 2736 (void *)(uintptr_t)zc->zc_share.z_sharedata, 2737 zc->zc_share.z_sharemax); 2738 2739 return (error); 2740 2741 } 2742 2743 /* 2744 * pool create, destroy, and export don't log the history as part of 2745 * zfsdev_ioctl, but rather zfs_ioc_pool_create, and zfs_ioc_pool_export 2746 * do the logging of those commands. 2747 */ 2748 static zfs_ioc_vec_t zfs_ioc_vec[] = { 2749 { zfs_ioc_pool_create, zfs_secpolicy_config, POOL_NAME, B_FALSE }, 2750 { zfs_ioc_pool_destroy, zfs_secpolicy_config, POOL_NAME, B_FALSE }, 2751 { zfs_ioc_pool_import, zfs_secpolicy_config, POOL_NAME, B_TRUE }, 2752 { zfs_ioc_pool_export, zfs_secpolicy_config, POOL_NAME, B_FALSE }, 2753 { zfs_ioc_pool_configs, zfs_secpolicy_none, NO_NAME, B_FALSE }, 2754 { zfs_ioc_pool_stats, zfs_secpolicy_read, POOL_NAME, B_FALSE }, 2755 { zfs_ioc_pool_tryimport, zfs_secpolicy_config, NO_NAME, B_FALSE }, 2756 { zfs_ioc_pool_scrub, zfs_secpolicy_config, POOL_NAME, B_TRUE }, 2757 { zfs_ioc_pool_freeze, zfs_secpolicy_config, NO_NAME, B_FALSE }, 2758 { zfs_ioc_pool_upgrade, zfs_secpolicy_config, POOL_NAME, B_TRUE }, 2759 { zfs_ioc_pool_get_history, zfs_secpolicy_config, POOL_NAME, B_FALSE }, 2760 { zfs_ioc_vdev_add, zfs_secpolicy_config, POOL_NAME, B_TRUE }, 2761 { zfs_ioc_vdev_remove, zfs_secpolicy_config, POOL_NAME, B_TRUE }, 2762 { zfs_ioc_vdev_set_state, zfs_secpolicy_config, POOL_NAME, B_TRUE }, 2763 { zfs_ioc_vdev_attach, zfs_secpolicy_config, POOL_NAME, B_TRUE }, 2764 { zfs_ioc_vdev_detach, zfs_secpolicy_config, POOL_NAME, B_TRUE }, 2765 { zfs_ioc_vdev_setpath, zfs_secpolicy_config, POOL_NAME, B_FALSE }, 2766 { zfs_ioc_objset_stats, zfs_secpolicy_read, DATASET_NAME, B_FALSE }, 2767 { zfs_ioc_objset_zplprops, zfs_secpolicy_read, DATASET_NAME, B_FALSE }, 2768 { zfs_ioc_dataset_list_next, zfs_secpolicy_read, 2769 DATASET_NAME, B_FALSE }, 2770 { zfs_ioc_snapshot_list_next, zfs_secpolicy_read, 2771 DATASET_NAME, B_FALSE }, 2772 { zfs_ioc_set_prop, zfs_secpolicy_none, DATASET_NAME, B_TRUE }, 2773 { zfs_ioc_create_minor, zfs_secpolicy_minor, DATASET_NAME, B_FALSE }, 2774 { zfs_ioc_remove_minor, zfs_secpolicy_minor, DATASET_NAME, B_FALSE }, 2775 { zfs_ioc_create, zfs_secpolicy_create, DATASET_NAME, B_TRUE }, 2776 { zfs_ioc_destroy, zfs_secpolicy_destroy, DATASET_NAME, B_TRUE }, 2777 { zfs_ioc_rollback, zfs_secpolicy_rollback, DATASET_NAME, B_TRUE }, 2778 { zfs_ioc_rename, zfs_secpolicy_rename, DATASET_NAME, B_TRUE }, 2779 { zfs_ioc_recv, zfs_secpolicy_receive, DATASET_NAME, B_TRUE }, 2780 { zfs_ioc_send, zfs_secpolicy_send, DATASET_NAME, B_TRUE }, 2781 { zfs_ioc_inject_fault, zfs_secpolicy_inject, NO_NAME, B_FALSE }, 2782 { zfs_ioc_clear_fault, zfs_secpolicy_inject, NO_NAME, B_FALSE }, 2783 { zfs_ioc_inject_list_next, zfs_secpolicy_inject, NO_NAME, B_FALSE }, 2784 { zfs_ioc_error_log, zfs_secpolicy_inject, POOL_NAME, B_FALSE }, 2785 { zfs_ioc_clear, zfs_secpolicy_config, POOL_NAME, B_TRUE }, 2786 { zfs_ioc_promote, zfs_secpolicy_promote, DATASET_NAME, B_TRUE }, 2787 { zfs_ioc_destroy_snaps, zfs_secpolicy_destroy, DATASET_NAME, B_TRUE }, 2788 { zfs_ioc_snapshot, zfs_secpolicy_snapshot, DATASET_NAME, B_TRUE }, 2789 { zfs_ioc_dsobj_to_dsname, zfs_secpolicy_config, POOL_NAME, B_FALSE }, 2790 { zfs_ioc_obj_to_path, zfs_secpolicy_config, NO_NAME, B_FALSE }, 2791 { zfs_ioc_pool_set_props, zfs_secpolicy_config, POOL_NAME, B_TRUE }, 2792 { zfs_ioc_pool_get_props, zfs_secpolicy_read, POOL_NAME, B_FALSE }, 2793 { zfs_ioc_set_fsacl, zfs_secpolicy_fsacl, DATASET_NAME, B_TRUE }, 2794 { zfs_ioc_get_fsacl, zfs_secpolicy_read, DATASET_NAME, B_FALSE }, 2795 { zfs_ioc_iscsi_perm_check, zfs_secpolicy_iscsi, 2796 DATASET_NAME, B_FALSE }, 2797 { zfs_ioc_share, zfs_secpolicy_share, DATASET_NAME, B_FALSE }, 2798 { zfs_ioc_inherit_prop, zfs_secpolicy_inherit, DATASET_NAME, B_TRUE }, 2799 }; 2800 2801 static int 2802 zfsdev_ioctl(dev_t dev, int cmd, intptr_t arg, int flag, cred_t *cr, int *rvalp) 2803 { 2804 zfs_cmd_t *zc; 2805 uint_t vec; 2806 int error, rc; 2807 2808 if (getminor(dev) != 0) 2809 return (zvol_ioctl(dev, cmd, arg, flag, cr, rvalp)); 2810 2811 vec = cmd - ZFS_IOC; 2812 ASSERT3U(getmajor(dev), ==, ddi_driver_major(zfs_dip)); 2813 2814 if (vec >= sizeof (zfs_ioc_vec) / sizeof (zfs_ioc_vec[0])) 2815 return (EINVAL); 2816 2817 zc = kmem_zalloc(sizeof (zfs_cmd_t), KM_SLEEP); 2818 2819 error = xcopyin((void *)arg, zc, sizeof (zfs_cmd_t)); 2820 2821 if (error == 0) 2822 error = zfs_ioc_vec[vec].zvec_secpolicy(zc, cr); 2823 2824 /* 2825 * Ensure that all pool/dataset names are valid before we pass down to 2826 * the lower layers. 2827 */ 2828 if (error == 0) { 2829 zc->zc_name[sizeof (zc->zc_name) - 1] = '\0'; 2830 switch (zfs_ioc_vec[vec].zvec_namecheck) { 2831 case POOL_NAME: 2832 if (pool_namecheck(zc->zc_name, NULL, NULL) != 0) 2833 error = EINVAL; 2834 break; 2835 2836 case DATASET_NAME: 2837 if (dataset_namecheck(zc->zc_name, NULL, NULL) != 0) 2838 error = EINVAL; 2839 break; 2840 2841 case NO_NAME: 2842 break; 2843 } 2844 } 2845 2846 if (error == 0) 2847 error = zfs_ioc_vec[vec].zvec_func(zc); 2848 2849 rc = xcopyout(zc, (void *)arg, sizeof (zfs_cmd_t)); 2850 if (error == 0) { 2851 error = rc; 2852 if (zfs_ioc_vec[vec].zvec_his_log == B_TRUE) 2853 zfs_log_history(zc); 2854 } 2855 2856 kmem_free(zc, sizeof (zfs_cmd_t)); 2857 return (error); 2858 } 2859 2860 static int 2861 zfs_attach(dev_info_t *dip, ddi_attach_cmd_t cmd) 2862 { 2863 if (cmd != DDI_ATTACH) 2864 return (DDI_FAILURE); 2865 2866 if (ddi_create_minor_node(dip, "zfs", S_IFCHR, 0, 2867 DDI_PSEUDO, 0) == DDI_FAILURE) 2868 return (DDI_FAILURE); 2869 2870 zfs_dip = dip; 2871 2872 ddi_report_dev(dip); 2873 2874 return (DDI_SUCCESS); 2875 } 2876 2877 static int 2878 zfs_detach(dev_info_t *dip, ddi_detach_cmd_t cmd) 2879 { 2880 if (spa_busy() || zfs_busy() || zvol_busy()) 2881 return (DDI_FAILURE); 2882 2883 if (cmd != DDI_DETACH) 2884 return (DDI_FAILURE); 2885 2886 zfs_dip = NULL; 2887 2888 ddi_prop_remove_all(dip); 2889 ddi_remove_minor_node(dip, NULL); 2890 2891 return (DDI_SUCCESS); 2892 } 2893 2894 /*ARGSUSED*/ 2895 static int 2896 zfs_info(dev_info_t *dip, ddi_info_cmd_t infocmd, void *arg, void **result) 2897 { 2898 switch (infocmd) { 2899 case DDI_INFO_DEVT2DEVINFO: 2900 *result = zfs_dip; 2901 return (DDI_SUCCESS); 2902 2903 case DDI_INFO_DEVT2INSTANCE: 2904 *result = (void *)0; 2905 return (DDI_SUCCESS); 2906 } 2907 2908 return (DDI_FAILURE); 2909 } 2910 2911 /* 2912 * OK, so this is a little weird. 2913 * 2914 * /dev/zfs is the control node, i.e. minor 0. 2915 * /dev/zvol/[r]dsk/pool/dataset are the zvols, minor > 0. 2916 * 2917 * /dev/zfs has basically nothing to do except serve up ioctls, 2918 * so most of the standard driver entry points are in zvol.c. 2919 */ 2920 static struct cb_ops zfs_cb_ops = { 2921 zvol_open, /* open */ 2922 zvol_close, /* close */ 2923 zvol_strategy, /* strategy */ 2924 nodev, /* print */ 2925 zvol_dump, /* dump */ 2926 zvol_read, /* read */ 2927 zvol_write, /* write */ 2928 zfsdev_ioctl, /* ioctl */ 2929 nodev, /* devmap */ 2930 nodev, /* mmap */ 2931 nodev, /* segmap */ 2932 nochpoll, /* poll */ 2933 ddi_prop_op, /* prop_op */ 2934 NULL, /* streamtab */ 2935 D_NEW | D_MP | D_64BIT, /* Driver compatibility flag */ 2936 CB_REV, /* version */ 2937 nodev, /* async read */ 2938 nodev, /* async write */ 2939 }; 2940 2941 static struct dev_ops zfs_dev_ops = { 2942 DEVO_REV, /* version */ 2943 0, /* refcnt */ 2944 zfs_info, /* info */ 2945 nulldev, /* identify */ 2946 nulldev, /* probe */ 2947 zfs_attach, /* attach */ 2948 zfs_detach, /* detach */ 2949 nodev, /* reset */ 2950 &zfs_cb_ops, /* driver operations */ 2951 NULL /* no bus operations */ 2952 }; 2953 2954 static struct modldrv zfs_modldrv = { 2955 &mod_driverops, "ZFS storage pool version " SPA_VERSION_STRING, 2956 &zfs_dev_ops 2957 }; 2958 2959 static struct modlinkage modlinkage = { 2960 MODREV_1, 2961 (void *)&zfs_modlfs, 2962 (void *)&zfs_modldrv, 2963 NULL 2964 }; 2965 2966 2967 uint_t zfs_fsyncer_key; 2968 extern uint_t rrw_tsd_key; 2969 2970 int 2971 _init(void) 2972 { 2973 int error; 2974 2975 spa_init(FREAD | FWRITE); 2976 zfs_init(); 2977 zvol_init(); 2978 2979 if ((error = mod_install(&modlinkage)) != 0) { 2980 zvol_fini(); 2981 zfs_fini(); 2982 spa_fini(); 2983 return (error); 2984 } 2985 2986 tsd_create(&zfs_fsyncer_key, NULL); 2987 tsd_create(&rrw_tsd_key, NULL); 2988 2989 error = ldi_ident_from_mod(&modlinkage, &zfs_li); 2990 ASSERT(error == 0); 2991 mutex_init(&zfs_share_lock, NULL, MUTEX_DEFAULT, NULL); 2992 2993 return (0); 2994 } 2995 2996 int 2997 _fini(void) 2998 { 2999 int error; 3000 3001 if (spa_busy() || zfs_busy() || zvol_busy() || zio_injection_enabled) 3002 return (EBUSY); 3003 3004 if ((error = mod_remove(&modlinkage)) != 0) 3005 return (error); 3006 3007 zvol_fini(); 3008 zfs_fini(); 3009 spa_fini(); 3010 if (zfs_nfsshare_inited) 3011 (void) ddi_modclose(nfs_mod); 3012 if (zfs_smbshare_inited) 3013 (void) ddi_modclose(smbsrv_mod); 3014 if (zfs_nfsshare_inited || zfs_smbshare_inited) 3015 (void) ddi_modclose(sharefs_mod); 3016 3017 tsd_destroy(&zfs_fsyncer_key); 3018 ldi_ident_release(zfs_li); 3019 zfs_li = NULL; 3020 mutex_destroy(&zfs_share_lock); 3021 3022 return (error); 3023 } 3024 3025 int 3026 _info(struct modinfo *modinfop) 3027 { 3028 return (mod_info(&modlinkage, modinfop)); 3029 } 3030