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 2010 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_vfsops.h> 40 #include <sys/zfs_znode.h> 41 #include <sys/zap.h> 42 #include <sys/spa.h> 43 #include <sys/spa_impl.h> 44 #include <sys/vdev.h> 45 #include <sys/priv_impl.h> 46 #include <sys/dmu.h> 47 #include <sys/dsl_dir.h> 48 #include <sys/dsl_dataset.h> 49 #include <sys/dsl_prop.h> 50 #include <sys/dsl_deleg.h> 51 #include <sys/dmu_objset.h> 52 #include <sys/ddi.h> 53 #include <sys/sunddi.h> 54 #include <sys/sunldi.h> 55 #include <sys/policy.h> 56 #include <sys/zone.h> 57 #include <sys/nvpair.h> 58 #include <sys/pathname.h> 59 #include <sys/mount.h> 60 #include <sys/sdt.h> 61 #include <sys/fs/zfs.h> 62 #include <sys/zfs_ctldir.h> 63 #include <sys/zfs_dir.h> 64 #include <sys/zvol.h> 65 #include <sharefs/share.h> 66 #include <sys/dmu_objset.h> 67 68 #include "zfs_namecheck.h" 69 #include "zfs_prop.h" 70 #include "zfs_deleg.h" 71 72 extern struct modlfs zfs_modlfs; 73 74 extern void zfs_init(void); 75 extern void zfs_fini(void); 76 77 ldi_ident_t zfs_li = NULL; 78 dev_info_t *zfs_dip; 79 80 typedef int zfs_ioc_func_t(zfs_cmd_t *); 81 typedef int zfs_secpolicy_func_t(zfs_cmd_t *, cred_t *); 82 83 typedef enum { 84 NO_NAME, 85 POOL_NAME, 86 DATASET_NAME 87 } zfs_ioc_namecheck_t; 88 89 typedef struct zfs_ioc_vec { 90 zfs_ioc_func_t *zvec_func; 91 zfs_secpolicy_func_t *zvec_secpolicy; 92 zfs_ioc_namecheck_t zvec_namecheck; 93 boolean_t zvec_his_log; 94 boolean_t zvec_pool_check; 95 } zfs_ioc_vec_t; 96 97 /* This array is indexed by zfs_userquota_prop_t */ 98 static const char *userquota_perms[] = { 99 ZFS_DELEG_PERM_USERUSED, 100 ZFS_DELEG_PERM_USERQUOTA, 101 ZFS_DELEG_PERM_GROUPUSED, 102 ZFS_DELEG_PERM_GROUPQUOTA, 103 }; 104 105 static int zfs_ioc_userspace_upgrade(zfs_cmd_t *zc); 106 static int zfs_check_settable(const char *name, nvpair_t *property, 107 cred_t *cr); 108 static int zfs_check_clearable(char *dataset, nvlist_t *props, 109 nvlist_t **errors); 110 static int zfs_fill_zplprops_root(uint64_t, nvlist_t *, nvlist_t *, 111 boolean_t *); 112 int zfs_set_prop_nvlist(const char *, zprop_source_t, nvlist_t *, nvlist_t **); 113 114 /* _NOTE(PRINTFLIKE(4)) - this is printf-like, but lint is too whiney */ 115 void 116 __dprintf(const char *file, const char *func, int line, const char *fmt, ...) 117 { 118 const char *newfile; 119 char buf[256]; 120 va_list adx; 121 122 /* 123 * Get rid of annoying "../common/" prefix to filename. 124 */ 125 newfile = strrchr(file, '/'); 126 if (newfile != NULL) { 127 newfile = newfile + 1; /* Get rid of leading / */ 128 } else { 129 newfile = file; 130 } 131 132 va_start(adx, fmt); 133 (void) vsnprintf(buf, sizeof (buf), fmt, adx); 134 va_end(adx); 135 136 /* 137 * To get this data, use the zfs-dprintf probe as so: 138 * dtrace -q -n 'zfs-dprintf \ 139 * /stringof(arg0) == "dbuf.c"/ \ 140 * {printf("%s: %s", stringof(arg1), stringof(arg3))}' 141 * arg0 = file name 142 * arg1 = function name 143 * arg2 = line number 144 * arg3 = message 145 */ 146 DTRACE_PROBE4(zfs__dprintf, 147 char *, newfile, char *, func, int, line, char *, buf); 148 } 149 150 static void 151 history_str_free(char *buf) 152 { 153 kmem_free(buf, HIS_MAX_RECORD_LEN); 154 } 155 156 static char * 157 history_str_get(zfs_cmd_t *zc) 158 { 159 char *buf; 160 161 if (zc->zc_history == NULL) 162 return (NULL); 163 164 buf = kmem_alloc(HIS_MAX_RECORD_LEN, KM_SLEEP); 165 if (copyinstr((void *)(uintptr_t)zc->zc_history, 166 buf, HIS_MAX_RECORD_LEN, NULL) != 0) { 167 history_str_free(buf); 168 return (NULL); 169 } 170 171 buf[HIS_MAX_RECORD_LEN -1] = '\0'; 172 173 return (buf); 174 } 175 176 /* 177 * Check to see if the named dataset is currently defined as bootable 178 */ 179 static boolean_t 180 zfs_is_bootfs(const char *name) 181 { 182 objset_t *os; 183 184 if (dmu_objset_hold(name, FTAG, &os) == 0) { 185 boolean_t ret; 186 ret = (dmu_objset_id(os) == spa_bootfs(dmu_objset_spa(os))); 187 dmu_objset_rele(os, FTAG); 188 return (ret); 189 } 190 return (B_FALSE); 191 } 192 193 /* 194 * zfs_earlier_version 195 * 196 * Return non-zero if the spa version is less than requested version. 197 */ 198 static int 199 zfs_earlier_version(const char *name, int version) 200 { 201 spa_t *spa; 202 203 if (spa_open(name, &spa, FTAG) == 0) { 204 if (spa_version(spa) < version) { 205 spa_close(spa, FTAG); 206 return (1); 207 } 208 spa_close(spa, FTAG); 209 } 210 return (0); 211 } 212 213 /* 214 * zpl_earlier_version 215 * 216 * Return TRUE if the ZPL version is less than requested version. 217 */ 218 static boolean_t 219 zpl_earlier_version(const char *name, int version) 220 { 221 objset_t *os; 222 boolean_t rc = B_TRUE; 223 224 if (dmu_objset_hold(name, FTAG, &os) == 0) { 225 uint64_t zplversion; 226 227 if (dmu_objset_type(os) != DMU_OST_ZFS) { 228 dmu_objset_rele(os, FTAG); 229 return (B_TRUE); 230 } 231 /* XXX reading from non-owned objset */ 232 if (zfs_get_zplprop(os, ZFS_PROP_VERSION, &zplversion) == 0) 233 rc = zplversion < version; 234 dmu_objset_rele(os, FTAG); 235 } 236 return (rc); 237 } 238 239 static void 240 zfs_log_history(zfs_cmd_t *zc) 241 { 242 spa_t *spa; 243 char *buf; 244 245 if ((buf = history_str_get(zc)) == NULL) 246 return; 247 248 if (spa_open(zc->zc_name, &spa, FTAG) == 0) { 249 if (spa_version(spa) >= SPA_VERSION_ZPOOL_HISTORY) 250 (void) spa_history_log(spa, buf, LOG_CMD_NORMAL); 251 spa_close(spa, FTAG); 252 } 253 history_str_free(buf); 254 } 255 256 /* 257 * Policy for top-level read operations (list pools). Requires no privileges, 258 * and can be used in the local zone, as there is no associated dataset. 259 */ 260 /* ARGSUSED */ 261 static int 262 zfs_secpolicy_none(zfs_cmd_t *zc, cred_t *cr) 263 { 264 return (0); 265 } 266 267 /* 268 * Policy for dataset read operations (list children, get statistics). Requires 269 * no privileges, but must be visible in the local zone. 270 */ 271 /* ARGSUSED */ 272 static int 273 zfs_secpolicy_read(zfs_cmd_t *zc, cred_t *cr) 274 { 275 if (INGLOBALZONE(curproc) || 276 zone_dataset_visible(zc->zc_name, NULL)) 277 return (0); 278 279 return (ENOENT); 280 } 281 282 static int 283 zfs_dozonecheck(const char *dataset, cred_t *cr) 284 { 285 uint64_t zoned; 286 int writable = 1; 287 288 /* 289 * The dataset must be visible by this zone -- check this first 290 * so they don't see EPERM on something they shouldn't know about. 291 */ 292 if (!INGLOBALZONE(curproc) && 293 !zone_dataset_visible(dataset, &writable)) 294 return (ENOENT); 295 296 if (dsl_prop_get_integer(dataset, "zoned", &zoned, NULL)) 297 return (ENOENT); 298 299 if (INGLOBALZONE(curproc)) { 300 /* 301 * If the fs is zoned, only root can access it from the 302 * global zone. 303 */ 304 if (secpolicy_zfs(cr) && zoned) 305 return (EPERM); 306 } else { 307 /* 308 * If we are in a local zone, the 'zoned' property must be set. 309 */ 310 if (!zoned) 311 return (EPERM); 312 313 /* must be writable by this zone */ 314 if (!writable) 315 return (EPERM); 316 } 317 return (0); 318 } 319 320 int 321 zfs_secpolicy_write_perms(const char *name, const char *perm, cred_t *cr) 322 { 323 int error; 324 325 error = zfs_dozonecheck(name, cr); 326 if (error == 0) { 327 error = secpolicy_zfs(cr); 328 if (error) 329 error = dsl_deleg_access(name, perm, cr); 330 } 331 return (error); 332 } 333 334 /* 335 * Policy for setting the security label property. 336 * 337 * Returns 0 for success, non-zero for access and other errors. 338 */ 339 static int 340 zfs_set_slabel_policy(const char *name, char *strval, cred_t *cr) 341 { 342 char ds_hexsl[MAXNAMELEN]; 343 bslabel_t ds_sl, new_sl; 344 boolean_t new_default = FALSE; 345 uint64_t zoned; 346 int needed_priv = -1; 347 int error; 348 349 /* First get the existing dataset label. */ 350 error = dsl_prop_get(name, zfs_prop_to_name(ZFS_PROP_MLSLABEL), 351 1, sizeof (ds_hexsl), &ds_hexsl, NULL); 352 if (error) 353 return (EPERM); 354 355 if (strcasecmp(strval, ZFS_MLSLABEL_DEFAULT) == 0) 356 new_default = TRUE; 357 358 /* The label must be translatable */ 359 if (!new_default && (hexstr_to_label(strval, &new_sl) != 0)) 360 return (EINVAL); 361 362 /* 363 * In a non-global zone, disallow attempts to set a label that 364 * doesn't match that of the zone; otherwise no other checks 365 * are needed. 366 */ 367 if (!INGLOBALZONE(curproc)) { 368 if (new_default || !blequal(&new_sl, CR_SL(CRED()))) 369 return (EPERM); 370 return (0); 371 } 372 373 /* 374 * For global-zone datasets (i.e., those whose zoned property is 375 * "off", verify that the specified new label is valid for the 376 * global zone. 377 */ 378 if (dsl_prop_get_integer(name, 379 zfs_prop_to_name(ZFS_PROP_ZONED), &zoned, NULL)) 380 return (EPERM); 381 if (!zoned) { 382 if (zfs_check_global_label(name, strval) != 0) 383 return (EPERM); 384 } 385 386 /* 387 * If the existing dataset label is nondefault, check if the 388 * dataset is mounted (label cannot be changed while mounted). 389 * Get the zfsvfs; if there isn't one, then the dataset isn't 390 * mounted (or isn't a dataset, doesn't exist, ...). 391 */ 392 if (strcasecmp(ds_hexsl, ZFS_MLSLABEL_DEFAULT) != 0) { 393 objset_t *os; 394 static char *setsl_tag = "setsl_tag"; 395 396 /* 397 * Try to own the dataset; abort if there is any error, 398 * (e.g., already mounted, in use, or other error). 399 */ 400 error = dmu_objset_own(name, DMU_OST_ZFS, B_TRUE, 401 setsl_tag, &os); 402 if (error) 403 return (EPERM); 404 405 dmu_objset_disown(os, setsl_tag); 406 407 if (new_default) { 408 needed_priv = PRIV_FILE_DOWNGRADE_SL; 409 goto out_check; 410 } 411 412 if (hexstr_to_label(strval, &new_sl) != 0) 413 return (EPERM); 414 415 if (blstrictdom(&ds_sl, &new_sl)) 416 needed_priv = PRIV_FILE_DOWNGRADE_SL; 417 else if (blstrictdom(&new_sl, &ds_sl)) 418 needed_priv = PRIV_FILE_UPGRADE_SL; 419 } else { 420 /* dataset currently has a default label */ 421 if (!new_default) 422 needed_priv = PRIV_FILE_UPGRADE_SL; 423 } 424 425 out_check: 426 if (needed_priv != -1) 427 return (PRIV_POLICY(cr, needed_priv, B_FALSE, EPERM, NULL)); 428 return (0); 429 } 430 431 static int 432 zfs_secpolicy_setprop(const char *dsname, zfs_prop_t prop, nvpair_t *propval, 433 cred_t *cr) 434 { 435 char *strval; 436 437 /* 438 * Check permissions for special properties. 439 */ 440 switch (prop) { 441 case ZFS_PROP_ZONED: 442 /* 443 * Disallow setting of 'zoned' from within a local zone. 444 */ 445 if (!INGLOBALZONE(curproc)) 446 return (EPERM); 447 break; 448 449 case ZFS_PROP_QUOTA: 450 if (!INGLOBALZONE(curproc)) { 451 uint64_t zoned; 452 char setpoint[MAXNAMELEN]; 453 /* 454 * Unprivileged users are allowed to modify the 455 * quota on things *under* (ie. contained by) 456 * the thing they own. 457 */ 458 if (dsl_prop_get_integer(dsname, "zoned", &zoned, 459 setpoint)) 460 return (EPERM); 461 if (!zoned || strlen(dsname) <= strlen(setpoint)) 462 return (EPERM); 463 } 464 break; 465 466 case ZFS_PROP_MLSLABEL: 467 if (!is_system_labeled()) 468 return (EPERM); 469 470 if (nvpair_value_string(propval, &strval) == 0) { 471 int err; 472 473 err = zfs_set_slabel_policy(dsname, strval, CRED()); 474 if (err != 0) 475 return (err); 476 } 477 break; 478 } 479 480 return (zfs_secpolicy_write_perms(dsname, zfs_prop_to_name(prop), cr)); 481 } 482 483 int 484 zfs_secpolicy_fsacl(zfs_cmd_t *zc, cred_t *cr) 485 { 486 int error; 487 488 error = zfs_dozonecheck(zc->zc_name, cr); 489 if (error) 490 return (error); 491 492 /* 493 * permission to set permissions will be evaluated later in 494 * dsl_deleg_can_allow() 495 */ 496 return (0); 497 } 498 499 int 500 zfs_secpolicy_rollback(zfs_cmd_t *zc, cred_t *cr) 501 { 502 return (zfs_secpolicy_write_perms(zc->zc_name, 503 ZFS_DELEG_PERM_ROLLBACK, cr)); 504 } 505 506 int 507 zfs_secpolicy_send(zfs_cmd_t *zc, cred_t *cr) 508 { 509 return (zfs_secpolicy_write_perms(zc->zc_name, 510 ZFS_DELEG_PERM_SEND, cr)); 511 } 512 513 static int 514 zfs_secpolicy_deleg_share(zfs_cmd_t *zc, cred_t *cr) 515 { 516 vnode_t *vp; 517 int error; 518 519 if ((error = lookupname(zc->zc_value, UIO_SYSSPACE, 520 NO_FOLLOW, NULL, &vp)) != 0) 521 return (error); 522 523 /* Now make sure mntpnt and dataset are ZFS */ 524 525 if (vp->v_vfsp->vfs_fstype != zfsfstype || 526 (strcmp((char *)refstr_value(vp->v_vfsp->vfs_resource), 527 zc->zc_name) != 0)) { 528 VN_RELE(vp); 529 return (EPERM); 530 } 531 532 VN_RELE(vp); 533 return (dsl_deleg_access(zc->zc_name, 534 ZFS_DELEG_PERM_SHARE, cr)); 535 } 536 537 int 538 zfs_secpolicy_share(zfs_cmd_t *zc, cred_t *cr) 539 { 540 if (!INGLOBALZONE(curproc)) 541 return (EPERM); 542 543 if (secpolicy_nfs(cr) == 0) { 544 return (0); 545 } else { 546 return (zfs_secpolicy_deleg_share(zc, cr)); 547 } 548 } 549 550 int 551 zfs_secpolicy_smb_acl(zfs_cmd_t *zc, cred_t *cr) 552 { 553 if (!INGLOBALZONE(curproc)) 554 return (EPERM); 555 556 if (secpolicy_smb(cr) == 0) { 557 return (0); 558 } else { 559 return (zfs_secpolicy_deleg_share(zc, cr)); 560 } 561 } 562 563 static int 564 zfs_get_parent(const char *datasetname, char *parent, int parentsize) 565 { 566 char *cp; 567 568 /* 569 * Remove the @bla or /bla from the end of the name to get the parent. 570 */ 571 (void) strncpy(parent, datasetname, parentsize); 572 cp = strrchr(parent, '@'); 573 if (cp != NULL) { 574 cp[0] = '\0'; 575 } else { 576 cp = strrchr(parent, '/'); 577 if (cp == NULL) 578 return (ENOENT); 579 cp[0] = '\0'; 580 } 581 582 return (0); 583 } 584 585 int 586 zfs_secpolicy_destroy_perms(const char *name, cred_t *cr) 587 { 588 int error; 589 590 if ((error = zfs_secpolicy_write_perms(name, 591 ZFS_DELEG_PERM_MOUNT, cr)) != 0) 592 return (error); 593 594 return (zfs_secpolicy_write_perms(name, ZFS_DELEG_PERM_DESTROY, cr)); 595 } 596 597 static int 598 zfs_secpolicy_destroy(zfs_cmd_t *zc, cred_t *cr) 599 { 600 return (zfs_secpolicy_destroy_perms(zc->zc_name, cr)); 601 } 602 603 /* 604 * Destroying snapshots with delegated permissions requires 605 * descendent mount and destroy permissions. 606 * Reassemble the full filesystem@snap name so dsl_deleg_access() 607 * can do the correct permission check. 608 * 609 * Since this routine is used when doing a recursive destroy of snapshots 610 * and destroying snapshots requires descendent permissions, a successfull 611 * check of the top level snapshot applies to snapshots of all descendent 612 * datasets as well. 613 */ 614 static int 615 zfs_secpolicy_destroy_snaps(zfs_cmd_t *zc, cred_t *cr) 616 { 617 int error; 618 char *dsname; 619 620 dsname = kmem_asprintf("%s@%s", zc->zc_name, zc->zc_value); 621 622 error = zfs_secpolicy_destroy_perms(dsname, cr); 623 624 strfree(dsname); 625 return (error); 626 } 627 628 /* 629 * Must have sys_config privilege to check the iscsi permission 630 */ 631 /* ARGSUSED */ 632 static int 633 zfs_secpolicy_iscsi(zfs_cmd_t *zc, cred_t *cr) 634 { 635 return (secpolicy_zfs(cr)); 636 } 637 638 int 639 zfs_secpolicy_rename_perms(const char *from, const char *to, cred_t *cr) 640 { 641 char parentname[MAXNAMELEN]; 642 int error; 643 644 if ((error = zfs_secpolicy_write_perms(from, 645 ZFS_DELEG_PERM_RENAME, cr)) != 0) 646 return (error); 647 648 if ((error = zfs_secpolicy_write_perms(from, 649 ZFS_DELEG_PERM_MOUNT, cr)) != 0) 650 return (error); 651 652 if ((error = zfs_get_parent(to, parentname, 653 sizeof (parentname))) != 0) 654 return (error); 655 656 if ((error = zfs_secpolicy_write_perms(parentname, 657 ZFS_DELEG_PERM_CREATE, cr)) != 0) 658 return (error); 659 660 if ((error = zfs_secpolicy_write_perms(parentname, 661 ZFS_DELEG_PERM_MOUNT, cr)) != 0) 662 return (error); 663 664 return (error); 665 } 666 667 static int 668 zfs_secpolicy_rename(zfs_cmd_t *zc, cred_t *cr) 669 { 670 return (zfs_secpolicy_rename_perms(zc->zc_name, zc->zc_value, cr)); 671 } 672 673 static int 674 zfs_secpolicy_promote(zfs_cmd_t *zc, cred_t *cr) 675 { 676 char parentname[MAXNAMELEN]; 677 objset_t *clone; 678 int error; 679 680 error = zfs_secpolicy_write_perms(zc->zc_name, 681 ZFS_DELEG_PERM_PROMOTE, cr); 682 if (error) 683 return (error); 684 685 error = dmu_objset_hold(zc->zc_name, FTAG, &clone); 686 687 if (error == 0) { 688 dsl_dataset_t *pclone = NULL; 689 dsl_dir_t *dd; 690 dd = clone->os_dsl_dataset->ds_dir; 691 692 rw_enter(&dd->dd_pool->dp_config_rwlock, RW_READER); 693 error = dsl_dataset_hold_obj(dd->dd_pool, 694 dd->dd_phys->dd_origin_obj, FTAG, &pclone); 695 rw_exit(&dd->dd_pool->dp_config_rwlock); 696 if (error) { 697 dmu_objset_rele(clone, FTAG); 698 return (error); 699 } 700 701 error = zfs_secpolicy_write_perms(zc->zc_name, 702 ZFS_DELEG_PERM_MOUNT, cr); 703 704 dsl_dataset_name(pclone, parentname); 705 dmu_objset_rele(clone, FTAG); 706 dsl_dataset_rele(pclone, FTAG); 707 if (error == 0) 708 error = zfs_secpolicy_write_perms(parentname, 709 ZFS_DELEG_PERM_PROMOTE, cr); 710 } 711 return (error); 712 } 713 714 static int 715 zfs_secpolicy_receive(zfs_cmd_t *zc, cred_t *cr) 716 { 717 int error; 718 719 if ((error = zfs_secpolicy_write_perms(zc->zc_name, 720 ZFS_DELEG_PERM_RECEIVE, cr)) != 0) 721 return (error); 722 723 if ((error = zfs_secpolicy_write_perms(zc->zc_name, 724 ZFS_DELEG_PERM_MOUNT, cr)) != 0) 725 return (error); 726 727 return (zfs_secpolicy_write_perms(zc->zc_name, 728 ZFS_DELEG_PERM_CREATE, cr)); 729 } 730 731 int 732 zfs_secpolicy_snapshot_perms(const char *name, cred_t *cr) 733 { 734 return (zfs_secpolicy_write_perms(name, 735 ZFS_DELEG_PERM_SNAPSHOT, cr)); 736 } 737 738 static int 739 zfs_secpolicy_snapshot(zfs_cmd_t *zc, cred_t *cr) 740 { 741 742 return (zfs_secpolicy_snapshot_perms(zc->zc_name, cr)); 743 } 744 745 static int 746 zfs_secpolicy_create(zfs_cmd_t *zc, cred_t *cr) 747 { 748 char parentname[MAXNAMELEN]; 749 int error; 750 751 if ((error = zfs_get_parent(zc->zc_name, parentname, 752 sizeof (parentname))) != 0) 753 return (error); 754 755 if (zc->zc_value[0] != '\0') { 756 if ((error = zfs_secpolicy_write_perms(zc->zc_value, 757 ZFS_DELEG_PERM_CLONE, cr)) != 0) 758 return (error); 759 } 760 761 if ((error = zfs_secpolicy_write_perms(parentname, 762 ZFS_DELEG_PERM_CREATE, cr)) != 0) 763 return (error); 764 765 error = zfs_secpolicy_write_perms(parentname, 766 ZFS_DELEG_PERM_MOUNT, cr); 767 768 return (error); 769 } 770 771 static int 772 zfs_secpolicy_umount(zfs_cmd_t *zc, cred_t *cr) 773 { 774 int error; 775 776 error = secpolicy_fs_unmount(cr, NULL); 777 if (error) { 778 error = dsl_deleg_access(zc->zc_name, ZFS_DELEG_PERM_MOUNT, cr); 779 } 780 return (error); 781 } 782 783 /* 784 * Policy for pool operations - create/destroy pools, add vdevs, etc. Requires 785 * SYS_CONFIG privilege, which is not available in a local zone. 786 */ 787 /* ARGSUSED */ 788 static int 789 zfs_secpolicy_config(zfs_cmd_t *zc, cred_t *cr) 790 { 791 if (secpolicy_sys_config(cr, B_FALSE) != 0) 792 return (EPERM); 793 794 return (0); 795 } 796 797 /* 798 * Policy for fault injection. Requires all privileges. 799 */ 800 /* ARGSUSED */ 801 static int 802 zfs_secpolicy_inject(zfs_cmd_t *zc, cred_t *cr) 803 { 804 return (secpolicy_zinject(cr)); 805 } 806 807 static int 808 zfs_secpolicy_inherit(zfs_cmd_t *zc, cred_t *cr) 809 { 810 zfs_prop_t prop = zfs_name_to_prop(zc->zc_value); 811 812 if (prop == ZPROP_INVAL) { 813 if (!zfs_prop_user(zc->zc_value)) 814 return (EINVAL); 815 return (zfs_secpolicy_write_perms(zc->zc_name, 816 ZFS_DELEG_PERM_USERPROP, cr)); 817 } else { 818 return (zfs_secpolicy_setprop(zc->zc_name, prop, 819 NULL, cr)); 820 } 821 } 822 823 static int 824 zfs_secpolicy_userspace_one(zfs_cmd_t *zc, cred_t *cr) 825 { 826 int err = zfs_secpolicy_read(zc, cr); 827 if (err) 828 return (err); 829 830 if (zc->zc_objset_type >= ZFS_NUM_USERQUOTA_PROPS) 831 return (EINVAL); 832 833 if (zc->zc_value[0] == 0) { 834 /* 835 * They are asking about a posix uid/gid. If it's 836 * themself, allow it. 837 */ 838 if (zc->zc_objset_type == ZFS_PROP_USERUSED || 839 zc->zc_objset_type == ZFS_PROP_USERQUOTA) { 840 if (zc->zc_guid == crgetuid(cr)) 841 return (0); 842 } else { 843 if (groupmember(zc->zc_guid, cr)) 844 return (0); 845 } 846 } 847 848 return (zfs_secpolicy_write_perms(zc->zc_name, 849 userquota_perms[zc->zc_objset_type], cr)); 850 } 851 852 static int 853 zfs_secpolicy_userspace_many(zfs_cmd_t *zc, cred_t *cr) 854 { 855 int err = zfs_secpolicy_read(zc, cr); 856 if (err) 857 return (err); 858 859 if (zc->zc_objset_type >= ZFS_NUM_USERQUOTA_PROPS) 860 return (EINVAL); 861 862 return (zfs_secpolicy_write_perms(zc->zc_name, 863 userquota_perms[zc->zc_objset_type], cr)); 864 } 865 866 static int 867 zfs_secpolicy_userspace_upgrade(zfs_cmd_t *zc, cred_t *cr) 868 { 869 return (zfs_secpolicy_setprop(zc->zc_name, ZFS_PROP_VERSION, 870 NULL, cr)); 871 } 872 873 static int 874 zfs_secpolicy_hold(zfs_cmd_t *zc, cred_t *cr) 875 { 876 return (zfs_secpolicy_write_perms(zc->zc_name, 877 ZFS_DELEG_PERM_HOLD, cr)); 878 } 879 880 static int 881 zfs_secpolicy_release(zfs_cmd_t *zc, cred_t *cr) 882 { 883 return (zfs_secpolicy_write_perms(zc->zc_name, 884 ZFS_DELEG_PERM_RELEASE, cr)); 885 } 886 887 /* 888 * Returns the nvlist as specified by the user in the zfs_cmd_t. 889 */ 890 static int 891 get_nvlist(uint64_t nvl, uint64_t size, int iflag, nvlist_t **nvp) 892 { 893 char *packed; 894 int error; 895 nvlist_t *list = NULL; 896 897 /* 898 * Read in and unpack the user-supplied nvlist. 899 */ 900 if (size == 0) 901 return (EINVAL); 902 903 packed = kmem_alloc(size, KM_SLEEP); 904 905 if ((error = ddi_copyin((void *)(uintptr_t)nvl, packed, size, 906 iflag)) != 0) { 907 kmem_free(packed, size); 908 return (error); 909 } 910 911 if ((error = nvlist_unpack(packed, size, &list, 0)) != 0) { 912 kmem_free(packed, size); 913 return (error); 914 } 915 916 kmem_free(packed, size); 917 918 *nvp = list; 919 return (0); 920 } 921 922 static int 923 fit_error_list(zfs_cmd_t *zc, nvlist_t **errors) 924 { 925 size_t size; 926 927 VERIFY(nvlist_size(*errors, &size, NV_ENCODE_NATIVE) == 0); 928 929 if (size > zc->zc_nvlist_dst_size) { 930 nvpair_t *more_errors; 931 int n = 0; 932 933 if (zc->zc_nvlist_dst_size < 1024) 934 return (ENOMEM); 935 936 VERIFY(nvlist_add_int32(*errors, ZPROP_N_MORE_ERRORS, 0) == 0); 937 more_errors = nvlist_prev_nvpair(*errors, NULL); 938 939 do { 940 nvpair_t *pair = nvlist_prev_nvpair(*errors, 941 more_errors); 942 VERIFY(nvlist_remove_nvpair(*errors, pair) == 0); 943 n++; 944 VERIFY(nvlist_size(*errors, &size, 945 NV_ENCODE_NATIVE) == 0); 946 } while (size > zc->zc_nvlist_dst_size); 947 948 VERIFY(nvlist_remove_nvpair(*errors, more_errors) == 0); 949 VERIFY(nvlist_add_int32(*errors, ZPROP_N_MORE_ERRORS, n) == 0); 950 ASSERT(nvlist_size(*errors, &size, NV_ENCODE_NATIVE) == 0); 951 ASSERT(size <= zc->zc_nvlist_dst_size); 952 } 953 954 return (0); 955 } 956 957 static int 958 put_nvlist(zfs_cmd_t *zc, nvlist_t *nvl) 959 { 960 char *packed = NULL; 961 int error = 0; 962 size_t size; 963 964 VERIFY(nvlist_size(nvl, &size, NV_ENCODE_NATIVE) == 0); 965 966 if (size > zc->zc_nvlist_dst_size) { 967 error = ENOMEM; 968 } else { 969 packed = kmem_alloc(size, KM_SLEEP); 970 VERIFY(nvlist_pack(nvl, &packed, &size, NV_ENCODE_NATIVE, 971 KM_SLEEP) == 0); 972 if (ddi_copyout(packed, (void *)(uintptr_t)zc->zc_nvlist_dst, 973 size, zc->zc_iflags) != 0) 974 error = EFAULT; 975 kmem_free(packed, size); 976 } 977 978 zc->zc_nvlist_dst_size = size; 979 return (error); 980 } 981 982 static int 983 getzfsvfs(const char *dsname, zfsvfs_t **zfvp) 984 { 985 objset_t *os; 986 int error; 987 988 error = dmu_objset_hold(dsname, FTAG, &os); 989 if (error) 990 return (error); 991 if (dmu_objset_type(os) != DMU_OST_ZFS) { 992 dmu_objset_rele(os, FTAG); 993 return (EINVAL); 994 } 995 996 mutex_enter(&os->os_user_ptr_lock); 997 *zfvp = dmu_objset_get_user(os); 998 if (*zfvp) { 999 VFS_HOLD((*zfvp)->z_vfs); 1000 } else { 1001 error = ESRCH; 1002 } 1003 mutex_exit(&os->os_user_ptr_lock); 1004 dmu_objset_rele(os, FTAG); 1005 return (error); 1006 } 1007 1008 /* 1009 * Find a zfsvfs_t for a mounted filesystem, or create our own, in which 1010 * case its z_vfs will be NULL, and it will be opened as the owner. 1011 */ 1012 static int 1013 zfsvfs_hold(const char *name, void *tag, zfsvfs_t **zfvp) 1014 { 1015 int error = 0; 1016 1017 if (getzfsvfs(name, zfvp) != 0) 1018 error = zfsvfs_create(name, zfvp); 1019 if (error == 0) { 1020 rrw_enter(&(*zfvp)->z_teardown_lock, RW_READER, tag); 1021 if ((*zfvp)->z_unmounted) { 1022 /* 1023 * XXX we could probably try again, since the unmounting 1024 * thread should be just about to disassociate the 1025 * objset from the zfsvfs. 1026 */ 1027 rrw_exit(&(*zfvp)->z_teardown_lock, tag); 1028 return (EBUSY); 1029 } 1030 } 1031 return (error); 1032 } 1033 1034 static void 1035 zfsvfs_rele(zfsvfs_t *zfsvfs, void *tag) 1036 { 1037 rrw_exit(&zfsvfs->z_teardown_lock, tag); 1038 1039 if (zfsvfs->z_vfs) { 1040 VFS_RELE(zfsvfs->z_vfs); 1041 } else { 1042 dmu_objset_disown(zfsvfs->z_os, zfsvfs); 1043 zfsvfs_free(zfsvfs); 1044 } 1045 } 1046 1047 static int 1048 zfs_ioc_pool_create(zfs_cmd_t *zc) 1049 { 1050 int error; 1051 nvlist_t *config, *props = NULL; 1052 nvlist_t *rootprops = NULL; 1053 nvlist_t *zplprops = NULL; 1054 char *buf; 1055 1056 if (error = get_nvlist(zc->zc_nvlist_conf, zc->zc_nvlist_conf_size, 1057 zc->zc_iflags, &config)) 1058 return (error); 1059 1060 if (zc->zc_nvlist_src_size != 0 && (error = 1061 get_nvlist(zc->zc_nvlist_src, zc->zc_nvlist_src_size, 1062 zc->zc_iflags, &props))) { 1063 nvlist_free(config); 1064 return (error); 1065 } 1066 1067 if (props) { 1068 nvlist_t *nvl = NULL; 1069 uint64_t version = SPA_VERSION; 1070 1071 (void) nvlist_lookup_uint64(props, 1072 zpool_prop_to_name(ZPOOL_PROP_VERSION), &version); 1073 if (version < SPA_VERSION_INITIAL || version > SPA_VERSION) { 1074 error = EINVAL; 1075 goto pool_props_bad; 1076 } 1077 (void) nvlist_lookup_nvlist(props, ZPOOL_ROOTFS_PROPS, &nvl); 1078 if (nvl) { 1079 error = nvlist_dup(nvl, &rootprops, KM_SLEEP); 1080 if (error != 0) { 1081 nvlist_free(config); 1082 nvlist_free(props); 1083 return (error); 1084 } 1085 (void) nvlist_remove_all(props, ZPOOL_ROOTFS_PROPS); 1086 } 1087 VERIFY(nvlist_alloc(&zplprops, NV_UNIQUE_NAME, KM_SLEEP) == 0); 1088 error = zfs_fill_zplprops_root(version, rootprops, 1089 zplprops, NULL); 1090 if (error) 1091 goto pool_props_bad; 1092 } 1093 1094 buf = history_str_get(zc); 1095 1096 error = spa_create(zc->zc_name, config, props, buf, zplprops); 1097 1098 /* 1099 * Set the remaining root properties 1100 */ 1101 if (!error && (error = zfs_set_prop_nvlist(zc->zc_name, 1102 ZPROP_SRC_LOCAL, rootprops, NULL)) != 0) 1103 (void) spa_destroy(zc->zc_name); 1104 1105 if (buf != NULL) 1106 history_str_free(buf); 1107 1108 pool_props_bad: 1109 nvlist_free(rootprops); 1110 nvlist_free(zplprops); 1111 nvlist_free(config); 1112 nvlist_free(props); 1113 1114 return (error); 1115 } 1116 1117 static int 1118 zfs_ioc_pool_destroy(zfs_cmd_t *zc) 1119 { 1120 int error; 1121 zfs_log_history(zc); 1122 error = spa_destroy(zc->zc_name); 1123 if (error == 0) 1124 zvol_remove_minors(zc->zc_name); 1125 return (error); 1126 } 1127 1128 static int 1129 zfs_ioc_pool_import(zfs_cmd_t *zc) 1130 { 1131 nvlist_t *config, *props = NULL; 1132 uint64_t guid; 1133 int error; 1134 1135 if ((error = get_nvlist(zc->zc_nvlist_conf, zc->zc_nvlist_conf_size, 1136 zc->zc_iflags, &config)) != 0) 1137 return (error); 1138 1139 if (zc->zc_nvlist_src_size != 0 && (error = 1140 get_nvlist(zc->zc_nvlist_src, zc->zc_nvlist_src_size, 1141 zc->zc_iflags, &props))) { 1142 nvlist_free(config); 1143 return (error); 1144 } 1145 1146 if (nvlist_lookup_uint64(config, ZPOOL_CONFIG_POOL_GUID, &guid) != 0 || 1147 guid != zc->zc_guid) 1148 error = EINVAL; 1149 else if (zc->zc_cookie) 1150 error = spa_import_verbatim(zc->zc_name, config, props); 1151 else 1152 error = spa_import(zc->zc_name, config, props); 1153 1154 if (zc->zc_nvlist_dst != 0) 1155 (void) put_nvlist(zc, config); 1156 1157 nvlist_free(config); 1158 1159 if (props) 1160 nvlist_free(props); 1161 1162 return (error); 1163 } 1164 1165 static int 1166 zfs_ioc_pool_export(zfs_cmd_t *zc) 1167 { 1168 int error; 1169 boolean_t force = (boolean_t)zc->zc_cookie; 1170 boolean_t hardforce = (boolean_t)zc->zc_guid; 1171 1172 zfs_log_history(zc); 1173 error = spa_export(zc->zc_name, NULL, force, hardforce); 1174 if (error == 0) 1175 zvol_remove_minors(zc->zc_name); 1176 return (error); 1177 } 1178 1179 static int 1180 zfs_ioc_pool_configs(zfs_cmd_t *zc) 1181 { 1182 nvlist_t *configs; 1183 int error; 1184 1185 if ((configs = spa_all_configs(&zc->zc_cookie)) == NULL) 1186 return (EEXIST); 1187 1188 error = put_nvlist(zc, configs); 1189 1190 nvlist_free(configs); 1191 1192 return (error); 1193 } 1194 1195 static int 1196 zfs_ioc_pool_stats(zfs_cmd_t *zc) 1197 { 1198 nvlist_t *config; 1199 int error; 1200 int ret = 0; 1201 1202 error = spa_get_stats(zc->zc_name, &config, zc->zc_value, 1203 sizeof (zc->zc_value)); 1204 1205 if (config != NULL) { 1206 ret = put_nvlist(zc, config); 1207 nvlist_free(config); 1208 1209 /* 1210 * The config may be present even if 'error' is non-zero. 1211 * In this case we return success, and preserve the real errno 1212 * in 'zc_cookie'. 1213 */ 1214 zc->zc_cookie = error; 1215 } else { 1216 ret = error; 1217 } 1218 1219 return (ret); 1220 } 1221 1222 /* 1223 * Try to import the given pool, returning pool stats as appropriate so that 1224 * user land knows which devices are available and overall pool health. 1225 */ 1226 static int 1227 zfs_ioc_pool_tryimport(zfs_cmd_t *zc) 1228 { 1229 nvlist_t *tryconfig, *config; 1230 int error; 1231 1232 if ((error = get_nvlist(zc->zc_nvlist_conf, zc->zc_nvlist_conf_size, 1233 zc->zc_iflags, &tryconfig)) != 0) 1234 return (error); 1235 1236 config = spa_tryimport(tryconfig); 1237 1238 nvlist_free(tryconfig); 1239 1240 if (config == NULL) 1241 return (EINVAL); 1242 1243 error = put_nvlist(zc, config); 1244 nvlist_free(config); 1245 1246 return (error); 1247 } 1248 1249 static int 1250 zfs_ioc_pool_scrub(zfs_cmd_t *zc) 1251 { 1252 spa_t *spa; 1253 int error; 1254 1255 if ((error = spa_open(zc->zc_name, &spa, FTAG)) != 0) 1256 return (error); 1257 1258 error = spa_scrub(spa, zc->zc_cookie); 1259 1260 spa_close(spa, FTAG); 1261 1262 return (error); 1263 } 1264 1265 static int 1266 zfs_ioc_pool_freeze(zfs_cmd_t *zc) 1267 { 1268 spa_t *spa; 1269 int error; 1270 1271 error = spa_open(zc->zc_name, &spa, FTAG); 1272 if (error == 0) { 1273 spa_freeze(spa); 1274 spa_close(spa, FTAG); 1275 } 1276 return (error); 1277 } 1278 1279 static int 1280 zfs_ioc_pool_upgrade(zfs_cmd_t *zc) 1281 { 1282 spa_t *spa; 1283 int error; 1284 1285 if ((error = spa_open(zc->zc_name, &spa, FTAG)) != 0) 1286 return (error); 1287 1288 if (zc->zc_cookie < spa_version(spa) || zc->zc_cookie > SPA_VERSION) { 1289 spa_close(spa, FTAG); 1290 return (EINVAL); 1291 } 1292 1293 spa_upgrade(spa, zc->zc_cookie); 1294 spa_close(spa, FTAG); 1295 1296 return (error); 1297 } 1298 1299 static int 1300 zfs_ioc_pool_get_history(zfs_cmd_t *zc) 1301 { 1302 spa_t *spa; 1303 char *hist_buf; 1304 uint64_t size; 1305 int error; 1306 1307 if ((size = zc->zc_history_len) == 0) 1308 return (EINVAL); 1309 1310 if ((error = spa_open(zc->zc_name, &spa, FTAG)) != 0) 1311 return (error); 1312 1313 if (spa_version(spa) < SPA_VERSION_ZPOOL_HISTORY) { 1314 spa_close(spa, FTAG); 1315 return (ENOTSUP); 1316 } 1317 1318 hist_buf = kmem_alloc(size, KM_SLEEP); 1319 if ((error = spa_history_get(spa, &zc->zc_history_offset, 1320 &zc->zc_history_len, hist_buf)) == 0) { 1321 error = ddi_copyout(hist_buf, 1322 (void *)(uintptr_t)zc->zc_history, 1323 zc->zc_history_len, zc->zc_iflags); 1324 } 1325 1326 spa_close(spa, FTAG); 1327 kmem_free(hist_buf, size); 1328 return (error); 1329 } 1330 1331 static int 1332 zfs_ioc_dsobj_to_dsname(zfs_cmd_t *zc) 1333 { 1334 int error; 1335 1336 if (error = dsl_dsobj_to_dsname(zc->zc_name, zc->zc_obj, zc->zc_value)) 1337 return (error); 1338 1339 return (0); 1340 } 1341 1342 /* 1343 * inputs: 1344 * zc_name name of filesystem 1345 * zc_obj object to find 1346 * 1347 * outputs: 1348 * zc_value name of object 1349 */ 1350 static int 1351 zfs_ioc_obj_to_path(zfs_cmd_t *zc) 1352 { 1353 objset_t *os; 1354 int error; 1355 1356 /* XXX reading from objset not owned */ 1357 if ((error = dmu_objset_hold(zc->zc_name, FTAG, &os)) != 0) 1358 return (error); 1359 if (dmu_objset_type(os) != DMU_OST_ZFS) { 1360 dmu_objset_rele(os, FTAG); 1361 return (EINVAL); 1362 } 1363 error = zfs_obj_to_path(os, zc->zc_obj, zc->zc_value, 1364 sizeof (zc->zc_value)); 1365 dmu_objset_rele(os, FTAG); 1366 1367 return (error); 1368 } 1369 1370 static int 1371 zfs_ioc_vdev_add(zfs_cmd_t *zc) 1372 { 1373 spa_t *spa; 1374 int error; 1375 nvlist_t *config, **l2cache, **spares; 1376 uint_t nl2cache = 0, nspares = 0; 1377 1378 error = spa_open(zc->zc_name, &spa, FTAG); 1379 if (error != 0) 1380 return (error); 1381 1382 error = get_nvlist(zc->zc_nvlist_conf, zc->zc_nvlist_conf_size, 1383 zc->zc_iflags, &config); 1384 (void) nvlist_lookup_nvlist_array(config, ZPOOL_CONFIG_L2CACHE, 1385 &l2cache, &nl2cache); 1386 1387 (void) nvlist_lookup_nvlist_array(config, ZPOOL_CONFIG_SPARES, 1388 &spares, &nspares); 1389 1390 /* 1391 * A root pool with concatenated devices is not supported. 1392 * Thus, can not add a device to a root pool. 1393 * 1394 * Intent log device can not be added to a rootpool because 1395 * during mountroot, zil is replayed, a seperated log device 1396 * can not be accessed during the mountroot time. 1397 * 1398 * l2cache and spare devices are ok to be added to a rootpool. 1399 */ 1400 if (spa_bootfs(spa) != 0 && nl2cache == 0 && nspares == 0) { 1401 nvlist_free(config); 1402 spa_close(spa, FTAG); 1403 return (EDOM); 1404 } 1405 1406 if (error == 0) { 1407 error = spa_vdev_add(spa, config); 1408 nvlist_free(config); 1409 } 1410 spa_close(spa, FTAG); 1411 return (error); 1412 } 1413 1414 static int 1415 zfs_ioc_vdev_remove(zfs_cmd_t *zc) 1416 { 1417 spa_t *spa; 1418 int error; 1419 1420 error = spa_open(zc->zc_name, &spa, FTAG); 1421 if (error != 0) 1422 return (error); 1423 error = spa_vdev_remove(spa, zc->zc_guid, B_FALSE); 1424 spa_close(spa, FTAG); 1425 return (error); 1426 } 1427 1428 static int 1429 zfs_ioc_vdev_set_state(zfs_cmd_t *zc) 1430 { 1431 spa_t *spa; 1432 int error; 1433 vdev_state_t newstate = VDEV_STATE_UNKNOWN; 1434 1435 if ((error = spa_open(zc->zc_name, &spa, FTAG)) != 0) 1436 return (error); 1437 switch (zc->zc_cookie) { 1438 case VDEV_STATE_ONLINE: 1439 error = vdev_online(spa, zc->zc_guid, zc->zc_obj, &newstate); 1440 break; 1441 1442 case VDEV_STATE_OFFLINE: 1443 error = vdev_offline(spa, zc->zc_guid, zc->zc_obj); 1444 break; 1445 1446 case VDEV_STATE_FAULTED: 1447 if (zc->zc_obj != VDEV_AUX_ERR_EXCEEDED && 1448 zc->zc_obj != VDEV_AUX_EXTERNAL) 1449 zc->zc_obj = VDEV_AUX_ERR_EXCEEDED; 1450 1451 error = vdev_fault(spa, zc->zc_guid, zc->zc_obj); 1452 break; 1453 1454 case VDEV_STATE_DEGRADED: 1455 if (zc->zc_obj != VDEV_AUX_ERR_EXCEEDED && 1456 zc->zc_obj != VDEV_AUX_EXTERNAL) 1457 zc->zc_obj = VDEV_AUX_ERR_EXCEEDED; 1458 1459 error = vdev_degrade(spa, zc->zc_guid, zc->zc_obj); 1460 break; 1461 1462 default: 1463 error = EINVAL; 1464 } 1465 zc->zc_cookie = newstate; 1466 spa_close(spa, FTAG); 1467 return (error); 1468 } 1469 1470 static int 1471 zfs_ioc_vdev_attach(zfs_cmd_t *zc) 1472 { 1473 spa_t *spa; 1474 int replacing = zc->zc_cookie; 1475 nvlist_t *config; 1476 int error; 1477 1478 if ((error = spa_open(zc->zc_name, &spa, FTAG)) != 0) 1479 return (error); 1480 1481 if ((error = get_nvlist(zc->zc_nvlist_conf, zc->zc_nvlist_conf_size, 1482 zc->zc_iflags, &config)) == 0) { 1483 error = spa_vdev_attach(spa, zc->zc_guid, config, replacing); 1484 nvlist_free(config); 1485 } 1486 1487 spa_close(spa, FTAG); 1488 return (error); 1489 } 1490 1491 static int 1492 zfs_ioc_vdev_detach(zfs_cmd_t *zc) 1493 { 1494 spa_t *spa; 1495 int error; 1496 1497 if ((error = spa_open(zc->zc_name, &spa, FTAG)) != 0) 1498 return (error); 1499 1500 error = spa_vdev_detach(spa, zc->zc_guid, 0, B_FALSE); 1501 1502 spa_close(spa, FTAG); 1503 return (error); 1504 } 1505 1506 static int 1507 zfs_ioc_vdev_split(zfs_cmd_t *zc) 1508 { 1509 spa_t *spa; 1510 nvlist_t *config, *props = NULL; 1511 int error; 1512 boolean_t exp = !!(zc->zc_cookie & ZPOOL_EXPORT_AFTER_SPLIT); 1513 1514 if ((error = spa_open(zc->zc_name, &spa, FTAG)) != 0) 1515 return (error); 1516 1517 if (error = get_nvlist(zc->zc_nvlist_conf, zc->zc_nvlist_conf_size, 1518 zc->zc_iflags, &config)) { 1519 spa_close(spa, FTAG); 1520 return (error); 1521 } 1522 1523 if (zc->zc_nvlist_src_size != 0 && (error = 1524 get_nvlist(zc->zc_nvlist_src, zc->zc_nvlist_src_size, 1525 zc->zc_iflags, &props))) { 1526 spa_close(spa, FTAG); 1527 nvlist_free(config); 1528 return (error); 1529 } 1530 1531 error = spa_vdev_split_mirror(spa, zc->zc_string, config, props, exp); 1532 1533 spa_close(spa, FTAG); 1534 1535 nvlist_free(config); 1536 nvlist_free(props); 1537 1538 return (error); 1539 } 1540 1541 static int 1542 zfs_ioc_vdev_setpath(zfs_cmd_t *zc) 1543 { 1544 spa_t *spa; 1545 char *path = zc->zc_value; 1546 uint64_t guid = zc->zc_guid; 1547 int error; 1548 1549 error = spa_open(zc->zc_name, &spa, FTAG); 1550 if (error != 0) 1551 return (error); 1552 1553 error = spa_vdev_setpath(spa, guid, path); 1554 spa_close(spa, FTAG); 1555 return (error); 1556 } 1557 1558 static int 1559 zfs_ioc_vdev_setfru(zfs_cmd_t *zc) 1560 { 1561 spa_t *spa; 1562 char *fru = zc->zc_value; 1563 uint64_t guid = zc->zc_guid; 1564 int error; 1565 1566 error = spa_open(zc->zc_name, &spa, FTAG); 1567 if (error != 0) 1568 return (error); 1569 1570 error = spa_vdev_setfru(spa, guid, fru); 1571 spa_close(spa, FTAG); 1572 return (error); 1573 } 1574 1575 /* 1576 * inputs: 1577 * zc_name name of filesystem 1578 * zc_nvlist_dst_size size of buffer for property nvlist 1579 * 1580 * outputs: 1581 * zc_objset_stats stats 1582 * zc_nvlist_dst property nvlist 1583 * zc_nvlist_dst_size size of property nvlist 1584 */ 1585 static int 1586 zfs_ioc_objset_stats(zfs_cmd_t *zc) 1587 { 1588 objset_t *os = NULL; 1589 int error; 1590 nvlist_t *nv; 1591 1592 if (error = dmu_objset_hold(zc->zc_name, FTAG, &os)) 1593 return (error); 1594 1595 dmu_objset_fast_stat(os, &zc->zc_objset_stats); 1596 1597 if (zc->zc_nvlist_dst != 0 && 1598 (error = dsl_prop_get_all(os, &nv)) == 0) { 1599 dmu_objset_stats(os, nv); 1600 /* 1601 * NB: zvol_get_stats() will read the objset contents, 1602 * which we aren't supposed to do with a 1603 * DS_MODE_USER hold, because it could be 1604 * inconsistent. So this is a bit of a workaround... 1605 * XXX reading with out owning 1606 */ 1607 if (!zc->zc_objset_stats.dds_inconsistent) { 1608 if (dmu_objset_type(os) == DMU_OST_ZVOL) 1609 VERIFY(zvol_get_stats(os, nv) == 0); 1610 } 1611 error = put_nvlist(zc, nv); 1612 nvlist_free(nv); 1613 } 1614 1615 dmu_objset_rele(os, FTAG); 1616 return (error); 1617 } 1618 1619 /* 1620 * inputs: 1621 * zc_name name of filesystem 1622 * zc_nvlist_dst_size size of buffer for property nvlist 1623 * 1624 * outputs: 1625 * zc_nvlist_dst received property nvlist 1626 * zc_nvlist_dst_size size of received property nvlist 1627 * 1628 * Gets received properties (distinct from local properties on or after 1629 * SPA_VERSION_RECVD_PROPS) for callers who want to differentiate received from 1630 * local property values. 1631 */ 1632 static int 1633 zfs_ioc_objset_recvd_props(zfs_cmd_t *zc) 1634 { 1635 objset_t *os = NULL; 1636 int error; 1637 nvlist_t *nv; 1638 1639 if (error = dmu_objset_hold(zc->zc_name, FTAG, &os)) 1640 return (error); 1641 1642 /* 1643 * Without this check, we would return local property values if the 1644 * caller has not already received properties on or after 1645 * SPA_VERSION_RECVD_PROPS. 1646 */ 1647 if (!dsl_prop_get_hasrecvd(os)) { 1648 dmu_objset_rele(os, FTAG); 1649 return (ENOTSUP); 1650 } 1651 1652 if (zc->zc_nvlist_dst != 0 && 1653 (error = dsl_prop_get_received(os, &nv)) == 0) { 1654 error = put_nvlist(zc, nv); 1655 nvlist_free(nv); 1656 } 1657 1658 dmu_objset_rele(os, FTAG); 1659 return (error); 1660 } 1661 1662 static int 1663 nvl_add_zplprop(objset_t *os, nvlist_t *props, zfs_prop_t prop) 1664 { 1665 uint64_t value; 1666 int error; 1667 1668 /* 1669 * zfs_get_zplprop() will either find a value or give us 1670 * the default value (if there is one). 1671 */ 1672 if ((error = zfs_get_zplprop(os, prop, &value)) != 0) 1673 return (error); 1674 VERIFY(nvlist_add_uint64(props, zfs_prop_to_name(prop), value) == 0); 1675 return (0); 1676 } 1677 1678 /* 1679 * inputs: 1680 * zc_name name of filesystem 1681 * zc_nvlist_dst_size size of buffer for zpl property nvlist 1682 * 1683 * outputs: 1684 * zc_nvlist_dst zpl property nvlist 1685 * zc_nvlist_dst_size size of zpl property nvlist 1686 */ 1687 static int 1688 zfs_ioc_objset_zplprops(zfs_cmd_t *zc) 1689 { 1690 objset_t *os; 1691 int err; 1692 1693 /* XXX reading without owning */ 1694 if (err = dmu_objset_hold(zc->zc_name, FTAG, &os)) 1695 return (err); 1696 1697 dmu_objset_fast_stat(os, &zc->zc_objset_stats); 1698 1699 /* 1700 * NB: nvl_add_zplprop() will read the objset contents, 1701 * which we aren't supposed to do with a DS_MODE_USER 1702 * hold, because it could be inconsistent. 1703 */ 1704 if (zc->zc_nvlist_dst != NULL && 1705 !zc->zc_objset_stats.dds_inconsistent && 1706 dmu_objset_type(os) == DMU_OST_ZFS) { 1707 nvlist_t *nv; 1708 1709 VERIFY(nvlist_alloc(&nv, NV_UNIQUE_NAME, KM_SLEEP) == 0); 1710 if ((err = nvl_add_zplprop(os, nv, ZFS_PROP_VERSION)) == 0 && 1711 (err = nvl_add_zplprop(os, nv, ZFS_PROP_NORMALIZE)) == 0 && 1712 (err = nvl_add_zplprop(os, nv, ZFS_PROP_UTF8ONLY)) == 0 && 1713 (err = nvl_add_zplprop(os, nv, ZFS_PROP_CASE)) == 0) 1714 err = put_nvlist(zc, nv); 1715 nvlist_free(nv); 1716 } else { 1717 err = ENOENT; 1718 } 1719 dmu_objset_rele(os, FTAG); 1720 return (err); 1721 } 1722 1723 static boolean_t 1724 dataset_name_hidden(const char *name) 1725 { 1726 /* 1727 * Skip over datasets that are not visible in this zone, 1728 * internal datasets (which have a $ in their name), and 1729 * temporary datasets (which have a % in their name). 1730 */ 1731 if (strchr(name, '$') != NULL) 1732 return (B_TRUE); 1733 if (strchr(name, '%') != NULL) 1734 return (B_TRUE); 1735 if (!INGLOBALZONE(curproc) && !zone_dataset_visible(name, NULL)) 1736 return (B_TRUE); 1737 return (B_FALSE); 1738 } 1739 1740 /* 1741 * inputs: 1742 * zc_name name of filesystem 1743 * zc_cookie zap cursor 1744 * zc_nvlist_dst_size size of buffer for property nvlist 1745 * 1746 * outputs: 1747 * zc_name name of next filesystem 1748 * zc_cookie zap cursor 1749 * zc_objset_stats stats 1750 * zc_nvlist_dst property nvlist 1751 * zc_nvlist_dst_size size of property nvlist 1752 */ 1753 static int 1754 zfs_ioc_dataset_list_next(zfs_cmd_t *zc) 1755 { 1756 objset_t *os; 1757 int error; 1758 char *p; 1759 size_t orig_len = strlen(zc->zc_name); 1760 1761 top: 1762 if (error = dmu_objset_hold(zc->zc_name, FTAG, &os)) { 1763 if (error == ENOENT) 1764 error = ESRCH; 1765 return (error); 1766 } 1767 1768 p = strrchr(zc->zc_name, '/'); 1769 if (p == NULL || p[1] != '\0') 1770 (void) strlcat(zc->zc_name, "/", sizeof (zc->zc_name)); 1771 p = zc->zc_name + strlen(zc->zc_name); 1772 1773 /* 1774 * Pre-fetch the datasets. dmu_objset_prefetch() always returns 0 1775 * but is not declared void because its called by dmu_objset_find(). 1776 */ 1777 if (zc->zc_cookie == 0) { 1778 uint64_t cookie = 0; 1779 int len = sizeof (zc->zc_name) - (p - zc->zc_name); 1780 1781 while (dmu_dir_list_next(os, len, p, NULL, &cookie) == 0) 1782 (void) dmu_objset_prefetch(p, NULL); 1783 } 1784 1785 do { 1786 error = dmu_dir_list_next(os, 1787 sizeof (zc->zc_name) - (p - zc->zc_name), p, 1788 NULL, &zc->zc_cookie); 1789 if (error == ENOENT) 1790 error = ESRCH; 1791 } while (error == 0 && dataset_name_hidden(zc->zc_name) && 1792 !(zc->zc_iflags & FKIOCTL)); 1793 dmu_objset_rele(os, FTAG); 1794 1795 /* 1796 * If it's an internal dataset (ie. with a '$' in its name), 1797 * don't try to get stats for it, otherwise we'll return ENOENT. 1798 */ 1799 if (error == 0 && strchr(zc->zc_name, '$') == NULL) { 1800 error = zfs_ioc_objset_stats(zc); /* fill in the stats */ 1801 if (error == ENOENT) { 1802 /* We lost a race with destroy, get the next one. */ 1803 zc->zc_name[orig_len] = '\0'; 1804 goto top; 1805 } 1806 } 1807 return (error); 1808 } 1809 1810 /* 1811 * inputs: 1812 * zc_name name of filesystem 1813 * zc_cookie zap cursor 1814 * zc_nvlist_dst_size size of buffer for property nvlist 1815 * 1816 * outputs: 1817 * zc_name name of next snapshot 1818 * zc_objset_stats stats 1819 * zc_nvlist_dst property nvlist 1820 * zc_nvlist_dst_size size of property nvlist 1821 */ 1822 static int 1823 zfs_ioc_snapshot_list_next(zfs_cmd_t *zc) 1824 { 1825 objset_t *os; 1826 int error; 1827 1828 top: 1829 if (zc->zc_cookie == 0) 1830 (void) dmu_objset_find(zc->zc_name, dmu_objset_prefetch, 1831 NULL, DS_FIND_SNAPSHOTS); 1832 1833 error = dmu_objset_hold(zc->zc_name, FTAG, &os); 1834 if (error) 1835 return (error == ENOENT ? ESRCH : error); 1836 1837 /* 1838 * A dataset name of maximum length cannot have any snapshots, 1839 * so exit immediately. 1840 */ 1841 if (strlcat(zc->zc_name, "@", sizeof (zc->zc_name)) >= MAXNAMELEN) { 1842 dmu_objset_rele(os, FTAG); 1843 return (ESRCH); 1844 } 1845 1846 error = dmu_snapshot_list_next(os, 1847 sizeof (zc->zc_name) - strlen(zc->zc_name), 1848 zc->zc_name + strlen(zc->zc_name), NULL, &zc->zc_cookie, NULL); 1849 dmu_objset_rele(os, FTAG); 1850 if (error == 0) { 1851 error = zfs_ioc_objset_stats(zc); /* fill in the stats */ 1852 if (error == ENOENT) { 1853 /* We lost a race with destroy, get the next one. */ 1854 *strchr(zc->zc_name, '@') = '\0'; 1855 goto top; 1856 } 1857 } else if (error == ENOENT) { 1858 error = ESRCH; 1859 } 1860 1861 /* if we failed, undo the @ that we tacked on to zc_name */ 1862 if (error) 1863 *strchr(zc->zc_name, '@') = '\0'; 1864 return (error); 1865 } 1866 1867 static int 1868 zfs_prop_set_userquota(const char *dsname, nvpair_t *pair) 1869 { 1870 const char *propname = nvpair_name(pair); 1871 uint64_t *valary; 1872 unsigned int vallen; 1873 const char *domain; 1874 zfs_userquota_prop_t type; 1875 uint64_t rid; 1876 uint64_t quota; 1877 zfsvfs_t *zfsvfs; 1878 int err; 1879 1880 if (nvpair_type(pair) == DATA_TYPE_NVLIST) { 1881 nvlist_t *attrs; 1882 VERIFY(nvpair_value_nvlist(pair, &attrs) == 0); 1883 VERIFY(nvlist_lookup_nvpair(attrs, ZPROP_VALUE, 1884 &pair) == 0); 1885 } 1886 1887 VERIFY(nvpair_value_uint64_array(pair, &valary, &vallen) == 0); 1888 VERIFY(vallen == 3); 1889 type = valary[0]; 1890 rid = valary[1]; 1891 quota = valary[2]; 1892 /* 1893 * The propname is encoded as 1894 * userquota@<rid>-<domain>. 1895 */ 1896 domain = strchr(propname, '-') + 1; 1897 1898 err = zfsvfs_hold(dsname, FTAG, &zfsvfs); 1899 if (err == 0) { 1900 err = zfs_set_userquota(zfsvfs, type, domain, rid, quota); 1901 zfsvfs_rele(zfsvfs, FTAG); 1902 } 1903 1904 return (err); 1905 } 1906 1907 /* 1908 * If the named property is one that has a special function to set its value, 1909 * return 0 on success and a positive error code on failure; otherwise if it is 1910 * not one of the special properties handled by this function, return -1. 1911 * 1912 * XXX: It would be better for callers of the properety interface if we handled 1913 * these special cases in dsl_prop.c (in the dsl layer). 1914 */ 1915 static int 1916 zfs_prop_set_special(const char *dsname, zprop_source_t source, 1917 nvpair_t *pair) 1918 { 1919 const char *propname = nvpair_name(pair); 1920 zfs_prop_t prop = zfs_name_to_prop(propname); 1921 uint64_t intval; 1922 int err; 1923 1924 if (prop == ZPROP_INVAL) { 1925 if (zfs_prop_userquota(propname)) 1926 return (zfs_prop_set_userquota(dsname, pair)); 1927 return (-1); 1928 } 1929 1930 if (nvpair_type(pair) == DATA_TYPE_NVLIST) { 1931 nvlist_t *attrs; 1932 VERIFY(nvpair_value_nvlist(pair, &attrs) == 0); 1933 VERIFY(nvlist_lookup_nvpair(attrs, ZPROP_VALUE, 1934 &pair) == 0); 1935 } 1936 1937 if (zfs_prop_get_type(prop) == PROP_TYPE_STRING) 1938 return (-1); 1939 1940 VERIFY(0 == nvpair_value_uint64(pair, &intval)); 1941 1942 switch (prop) { 1943 case ZFS_PROP_QUOTA: 1944 err = dsl_dir_set_quota(dsname, source, intval); 1945 break; 1946 case ZFS_PROP_REFQUOTA: 1947 err = dsl_dataset_set_quota(dsname, source, intval); 1948 break; 1949 case ZFS_PROP_RESERVATION: 1950 err = dsl_dir_set_reservation(dsname, source, intval); 1951 break; 1952 case ZFS_PROP_REFRESERVATION: 1953 err = dsl_dataset_set_reservation(dsname, source, intval); 1954 break; 1955 case ZFS_PROP_VOLSIZE: 1956 err = zvol_set_volsize(dsname, ddi_driver_major(zfs_dip), 1957 intval); 1958 break; 1959 case ZFS_PROP_VERSION: 1960 { 1961 zfsvfs_t *zfsvfs; 1962 1963 if ((err = zfsvfs_hold(dsname, FTAG, &zfsvfs)) != 0) 1964 break; 1965 1966 err = zfs_set_version(zfsvfs, intval); 1967 zfsvfs_rele(zfsvfs, FTAG); 1968 1969 if (err == 0 && intval >= ZPL_VERSION_USERSPACE) { 1970 zfs_cmd_t *zc; 1971 1972 zc = kmem_zalloc(sizeof (zfs_cmd_t), KM_SLEEP); 1973 (void) strcpy(zc->zc_name, dsname); 1974 (void) zfs_ioc_userspace_upgrade(zc); 1975 kmem_free(zc, sizeof (zfs_cmd_t)); 1976 } 1977 break; 1978 } 1979 1980 default: 1981 err = -1; 1982 } 1983 1984 return (err); 1985 } 1986 1987 /* 1988 * This function is best effort. If it fails to set any of the given properties, 1989 * it continues to set as many as it can and returns the first error 1990 * encountered. If the caller provides a non-NULL errlist, it also gives the 1991 * complete list of names of all the properties it failed to set along with the 1992 * corresponding error numbers. The caller is responsible for freeing the 1993 * returned errlist. 1994 * 1995 * If every property is set successfully, zero is returned and the list pointed 1996 * at by errlist is NULL. 1997 */ 1998 int 1999 zfs_set_prop_nvlist(const char *dsname, zprop_source_t source, nvlist_t *nvl, 2000 nvlist_t **errlist) 2001 { 2002 nvpair_t *pair; 2003 nvpair_t *propval; 2004 int rv = 0; 2005 uint64_t intval; 2006 char *strval; 2007 nvlist_t *genericnvl; 2008 nvlist_t *errors; 2009 nvlist_t *retrynvl; 2010 2011 VERIFY(nvlist_alloc(&genericnvl, NV_UNIQUE_NAME, KM_SLEEP) == 0); 2012 VERIFY(nvlist_alloc(&errors, NV_UNIQUE_NAME, KM_SLEEP) == 0); 2013 VERIFY(nvlist_alloc(&retrynvl, NV_UNIQUE_NAME, KM_SLEEP) == 0); 2014 2015 retry: 2016 pair = NULL; 2017 while ((pair = nvlist_next_nvpair(nvl, pair)) != NULL) { 2018 const char *propname = nvpair_name(pair); 2019 zfs_prop_t prop = zfs_name_to_prop(propname); 2020 int err = 0; 2021 2022 /* decode the property value */ 2023 propval = pair; 2024 if (nvpair_type(pair) == DATA_TYPE_NVLIST) { 2025 nvlist_t *attrs; 2026 VERIFY(nvpair_value_nvlist(pair, &attrs) == 0); 2027 VERIFY(nvlist_lookup_nvpair(attrs, ZPROP_VALUE, 2028 &propval) == 0); 2029 } 2030 2031 /* Validate value type */ 2032 if (prop == ZPROP_INVAL) { 2033 if (zfs_prop_user(propname)) { 2034 if (nvpair_type(propval) != DATA_TYPE_STRING) 2035 err = EINVAL; 2036 } else if (zfs_prop_userquota(propname)) { 2037 if (nvpair_type(propval) != 2038 DATA_TYPE_UINT64_ARRAY) 2039 err = EINVAL; 2040 } 2041 } else { 2042 if (nvpair_type(propval) == DATA_TYPE_STRING) { 2043 if (zfs_prop_get_type(prop) != PROP_TYPE_STRING) 2044 err = EINVAL; 2045 } else if (nvpair_type(propval) == DATA_TYPE_UINT64) { 2046 const char *unused; 2047 2048 VERIFY(nvpair_value_uint64(propval, 2049 &intval) == 0); 2050 2051 switch (zfs_prop_get_type(prop)) { 2052 case PROP_TYPE_NUMBER: 2053 break; 2054 case PROP_TYPE_STRING: 2055 err = EINVAL; 2056 break; 2057 case PROP_TYPE_INDEX: 2058 if (zfs_prop_index_to_string(prop, 2059 intval, &unused) != 0) 2060 err = EINVAL; 2061 break; 2062 default: 2063 cmn_err(CE_PANIC, 2064 "unknown property type"); 2065 } 2066 } else { 2067 err = EINVAL; 2068 } 2069 } 2070 2071 /* Validate permissions */ 2072 if (err == 0) 2073 err = zfs_check_settable(dsname, pair, CRED()); 2074 2075 if (err == 0) { 2076 err = zfs_prop_set_special(dsname, source, pair); 2077 if (err == -1) { 2078 /* 2079 * For better performance we build up a list of 2080 * properties to set in a single transaction. 2081 */ 2082 err = nvlist_add_nvpair(genericnvl, pair); 2083 } else if (err != 0 && nvl != retrynvl) { 2084 /* 2085 * This may be a spurious error caused by 2086 * receiving quota and reservation out of order. 2087 * Try again in a second pass. 2088 */ 2089 err = nvlist_add_nvpair(retrynvl, pair); 2090 } 2091 } 2092 2093 if (err != 0) 2094 VERIFY(nvlist_add_int32(errors, propname, err) == 0); 2095 } 2096 2097 if (nvl != retrynvl && !nvlist_empty(retrynvl)) { 2098 nvl = retrynvl; 2099 goto retry; 2100 } 2101 2102 if (!nvlist_empty(genericnvl) && 2103 dsl_props_set(dsname, source, genericnvl) != 0) { 2104 /* 2105 * If this fails, we still want to set as many properties as we 2106 * can, so try setting them individually. 2107 */ 2108 pair = NULL; 2109 while ((pair = nvlist_next_nvpair(genericnvl, pair)) != NULL) { 2110 const char *propname = nvpair_name(pair); 2111 int err = 0; 2112 2113 propval = pair; 2114 if (nvpair_type(pair) == DATA_TYPE_NVLIST) { 2115 nvlist_t *attrs; 2116 VERIFY(nvpair_value_nvlist(pair, &attrs) == 0); 2117 VERIFY(nvlist_lookup_nvpair(attrs, ZPROP_VALUE, 2118 &propval) == 0); 2119 } 2120 2121 if (nvpair_type(propval) == DATA_TYPE_STRING) { 2122 VERIFY(nvpair_value_string(propval, 2123 &strval) == 0); 2124 err = dsl_prop_set(dsname, propname, source, 1, 2125 strlen(strval) + 1, strval); 2126 } else { 2127 VERIFY(nvpair_value_uint64(propval, 2128 &intval) == 0); 2129 err = dsl_prop_set(dsname, propname, source, 8, 2130 1, &intval); 2131 } 2132 2133 if (err != 0) { 2134 VERIFY(nvlist_add_int32(errors, propname, 2135 err) == 0); 2136 } 2137 } 2138 } 2139 nvlist_free(genericnvl); 2140 nvlist_free(retrynvl); 2141 2142 if ((pair = nvlist_next_nvpair(errors, NULL)) == NULL) { 2143 nvlist_free(errors); 2144 errors = NULL; 2145 } else { 2146 VERIFY(nvpair_value_int32(pair, &rv) == 0); 2147 } 2148 2149 if (errlist == NULL) 2150 nvlist_free(errors); 2151 else 2152 *errlist = errors; 2153 2154 return (rv); 2155 } 2156 2157 /* 2158 * Check that all the properties are valid user properties. 2159 */ 2160 static int 2161 zfs_check_userprops(char *fsname, nvlist_t *nvl) 2162 { 2163 nvpair_t *pair = NULL; 2164 int error = 0; 2165 2166 while ((pair = nvlist_next_nvpair(nvl, pair)) != NULL) { 2167 const char *propname = nvpair_name(pair); 2168 char *valstr; 2169 2170 if (!zfs_prop_user(propname) || 2171 nvpair_type(pair) != DATA_TYPE_STRING) 2172 return (EINVAL); 2173 2174 if (error = zfs_secpolicy_write_perms(fsname, 2175 ZFS_DELEG_PERM_USERPROP, CRED())) 2176 return (error); 2177 2178 if (strlen(propname) >= ZAP_MAXNAMELEN) 2179 return (ENAMETOOLONG); 2180 2181 VERIFY(nvpair_value_string(pair, &valstr) == 0); 2182 if (strlen(valstr) >= ZAP_MAXVALUELEN) 2183 return (E2BIG); 2184 } 2185 return (0); 2186 } 2187 2188 static void 2189 props_skip(nvlist_t *props, nvlist_t *skipped, nvlist_t **newprops) 2190 { 2191 nvpair_t *pair; 2192 2193 VERIFY(nvlist_alloc(newprops, NV_UNIQUE_NAME, KM_SLEEP) == 0); 2194 2195 pair = NULL; 2196 while ((pair = nvlist_next_nvpair(props, pair)) != NULL) { 2197 if (nvlist_exists(skipped, nvpair_name(pair))) 2198 continue; 2199 2200 VERIFY(nvlist_add_nvpair(*newprops, pair) == 0); 2201 } 2202 } 2203 2204 static int 2205 clear_received_props(objset_t *os, const char *fs, nvlist_t *props, 2206 nvlist_t *skipped) 2207 { 2208 int err = 0; 2209 nvlist_t *cleared_props = NULL; 2210 props_skip(props, skipped, &cleared_props); 2211 if (!nvlist_empty(cleared_props)) { 2212 /* 2213 * Acts on local properties until the dataset has received 2214 * properties at least once on or after SPA_VERSION_RECVD_PROPS. 2215 */ 2216 zprop_source_t flags = (ZPROP_SRC_NONE | 2217 (dsl_prop_get_hasrecvd(os) ? ZPROP_SRC_RECEIVED : 0)); 2218 err = zfs_set_prop_nvlist(fs, flags, cleared_props, NULL); 2219 } 2220 nvlist_free(cleared_props); 2221 return (err); 2222 } 2223 2224 /* 2225 * inputs: 2226 * zc_name name of filesystem 2227 * zc_value name of property to set 2228 * zc_nvlist_src{_size} nvlist of properties to apply 2229 * zc_cookie received properties flag 2230 * 2231 * outputs: 2232 * zc_nvlist_dst{_size} error for each unapplied received property 2233 */ 2234 static int 2235 zfs_ioc_set_prop(zfs_cmd_t *zc) 2236 { 2237 nvlist_t *nvl; 2238 boolean_t received = zc->zc_cookie; 2239 zprop_source_t source = (received ? ZPROP_SRC_RECEIVED : 2240 ZPROP_SRC_LOCAL); 2241 nvlist_t *errors = NULL; 2242 int error; 2243 2244 if ((error = get_nvlist(zc->zc_nvlist_src, zc->zc_nvlist_src_size, 2245 zc->zc_iflags, &nvl)) != 0) 2246 return (error); 2247 2248 if (received) { 2249 nvlist_t *origprops; 2250 objset_t *os; 2251 2252 if (dmu_objset_hold(zc->zc_name, FTAG, &os) == 0) { 2253 if (dsl_prop_get_received(os, &origprops) == 0) { 2254 (void) clear_received_props(os, 2255 zc->zc_name, origprops, nvl); 2256 nvlist_free(origprops); 2257 } 2258 2259 dsl_prop_set_hasrecvd(os); 2260 dmu_objset_rele(os, FTAG); 2261 } 2262 } 2263 2264 error = zfs_set_prop_nvlist(zc->zc_name, source, nvl, &errors); 2265 2266 if (zc->zc_nvlist_dst != NULL && errors != NULL) { 2267 (void) put_nvlist(zc, errors); 2268 } 2269 2270 nvlist_free(errors); 2271 nvlist_free(nvl); 2272 return (error); 2273 } 2274 2275 /* 2276 * inputs: 2277 * zc_name name of filesystem 2278 * zc_value name of property to inherit 2279 * zc_cookie revert to received value if TRUE 2280 * 2281 * outputs: none 2282 */ 2283 static int 2284 zfs_ioc_inherit_prop(zfs_cmd_t *zc) 2285 { 2286 const char *propname = zc->zc_value; 2287 zfs_prop_t prop = zfs_name_to_prop(propname); 2288 boolean_t received = zc->zc_cookie; 2289 zprop_source_t source = (received 2290 ? ZPROP_SRC_NONE /* revert to received value, if any */ 2291 : ZPROP_SRC_INHERITED); /* explicitly inherit */ 2292 2293 if (received) { 2294 nvlist_t *dummy; 2295 nvpair_t *pair; 2296 zprop_type_t type; 2297 int err; 2298 2299 /* 2300 * zfs_prop_set_special() expects properties in the form of an 2301 * nvpair with type info. 2302 */ 2303 if (prop == ZPROP_INVAL) { 2304 if (!zfs_prop_user(propname)) 2305 return (EINVAL); 2306 2307 type = PROP_TYPE_STRING; 2308 } else if (prop == ZFS_PROP_VOLSIZE || 2309 prop == ZFS_PROP_VERSION) { 2310 return (EINVAL); 2311 } else { 2312 type = zfs_prop_get_type(prop); 2313 } 2314 2315 VERIFY(nvlist_alloc(&dummy, NV_UNIQUE_NAME, KM_SLEEP) == 0); 2316 2317 switch (type) { 2318 case PROP_TYPE_STRING: 2319 VERIFY(0 == nvlist_add_string(dummy, propname, "")); 2320 break; 2321 case PROP_TYPE_NUMBER: 2322 case PROP_TYPE_INDEX: 2323 VERIFY(0 == nvlist_add_uint64(dummy, propname, 0)); 2324 break; 2325 default: 2326 nvlist_free(dummy); 2327 return (EINVAL); 2328 } 2329 2330 pair = nvlist_next_nvpair(dummy, NULL); 2331 err = zfs_prop_set_special(zc->zc_name, source, pair); 2332 nvlist_free(dummy); 2333 if (err != -1) 2334 return (err); /* special property already handled */ 2335 } else { 2336 /* 2337 * Only check this in the non-received case. We want to allow 2338 * 'inherit -S' to revert non-inheritable properties like quota 2339 * and reservation to the received or default values even though 2340 * they are not considered inheritable. 2341 */ 2342 if (prop != ZPROP_INVAL && !zfs_prop_inheritable(prop)) 2343 return (EINVAL); 2344 } 2345 2346 /* the property name has been validated by zfs_secpolicy_inherit() */ 2347 return (dsl_prop_set(zc->zc_name, zc->zc_value, source, 0, 0, NULL)); 2348 } 2349 2350 static int 2351 zfs_ioc_pool_set_props(zfs_cmd_t *zc) 2352 { 2353 nvlist_t *props; 2354 spa_t *spa; 2355 int error; 2356 nvpair_t *pair; 2357 2358 if (error = get_nvlist(zc->zc_nvlist_src, zc->zc_nvlist_src_size, 2359 zc->zc_iflags, &props)) 2360 return (error); 2361 2362 /* 2363 * If the only property is the configfile, then just do a spa_lookup() 2364 * to handle the faulted case. 2365 */ 2366 pair = nvlist_next_nvpair(props, NULL); 2367 if (pair != NULL && strcmp(nvpair_name(pair), 2368 zpool_prop_to_name(ZPOOL_PROP_CACHEFILE)) == 0 && 2369 nvlist_next_nvpair(props, pair) == NULL) { 2370 mutex_enter(&spa_namespace_lock); 2371 if ((spa = spa_lookup(zc->zc_name)) != NULL) { 2372 spa_configfile_set(spa, props, B_FALSE); 2373 spa_config_sync(spa, B_FALSE, B_TRUE); 2374 } 2375 mutex_exit(&spa_namespace_lock); 2376 if (spa != NULL) { 2377 nvlist_free(props); 2378 return (0); 2379 } 2380 } 2381 2382 if ((error = spa_open(zc->zc_name, &spa, FTAG)) != 0) { 2383 nvlist_free(props); 2384 return (error); 2385 } 2386 2387 error = spa_prop_set(spa, props); 2388 2389 nvlist_free(props); 2390 spa_close(spa, FTAG); 2391 2392 return (error); 2393 } 2394 2395 static int 2396 zfs_ioc_pool_get_props(zfs_cmd_t *zc) 2397 { 2398 spa_t *spa; 2399 int error; 2400 nvlist_t *nvp = NULL; 2401 2402 if ((error = spa_open(zc->zc_name, &spa, FTAG)) != 0) { 2403 /* 2404 * If the pool is faulted, there may be properties we can still 2405 * get (such as altroot and cachefile), so attempt to get them 2406 * anyway. 2407 */ 2408 mutex_enter(&spa_namespace_lock); 2409 if ((spa = spa_lookup(zc->zc_name)) != NULL) 2410 error = spa_prop_get(spa, &nvp); 2411 mutex_exit(&spa_namespace_lock); 2412 } else { 2413 error = spa_prop_get(spa, &nvp); 2414 spa_close(spa, FTAG); 2415 } 2416 2417 if (error == 0 && zc->zc_nvlist_dst != NULL) 2418 error = put_nvlist(zc, nvp); 2419 else 2420 error = EFAULT; 2421 2422 nvlist_free(nvp); 2423 return (error); 2424 } 2425 2426 static int 2427 zfs_ioc_iscsi_perm_check(zfs_cmd_t *zc) 2428 { 2429 nvlist_t *nvp; 2430 int error; 2431 uint32_t uid; 2432 uint32_t gid; 2433 uint32_t *groups; 2434 uint_t group_cnt; 2435 cred_t *usercred; 2436 2437 if ((error = get_nvlist(zc->zc_nvlist_src, zc->zc_nvlist_src_size, 2438 zc->zc_iflags, &nvp)) != 0) { 2439 return (error); 2440 } 2441 2442 if ((error = nvlist_lookup_uint32(nvp, 2443 ZFS_DELEG_PERM_UID, &uid)) != 0) { 2444 nvlist_free(nvp); 2445 return (EPERM); 2446 } 2447 2448 if ((error = nvlist_lookup_uint32(nvp, 2449 ZFS_DELEG_PERM_GID, &gid)) != 0) { 2450 nvlist_free(nvp); 2451 return (EPERM); 2452 } 2453 2454 if ((error = nvlist_lookup_uint32_array(nvp, ZFS_DELEG_PERM_GROUPS, 2455 &groups, &group_cnt)) != 0) { 2456 nvlist_free(nvp); 2457 return (EPERM); 2458 } 2459 usercred = cralloc(); 2460 if ((crsetugid(usercred, uid, gid) != 0) || 2461 (crsetgroups(usercred, group_cnt, (gid_t *)groups) != 0)) { 2462 nvlist_free(nvp); 2463 crfree(usercred); 2464 return (EPERM); 2465 } 2466 nvlist_free(nvp); 2467 error = dsl_deleg_access(zc->zc_name, 2468 zfs_prop_to_name(ZFS_PROP_SHAREISCSI), usercred); 2469 crfree(usercred); 2470 return (error); 2471 } 2472 2473 /* 2474 * inputs: 2475 * zc_name name of filesystem 2476 * zc_nvlist_src{_size} nvlist of delegated permissions 2477 * zc_perm_action allow/unallow flag 2478 * 2479 * outputs: none 2480 */ 2481 static int 2482 zfs_ioc_set_fsacl(zfs_cmd_t *zc) 2483 { 2484 int error; 2485 nvlist_t *fsaclnv = NULL; 2486 2487 if ((error = get_nvlist(zc->zc_nvlist_src, zc->zc_nvlist_src_size, 2488 zc->zc_iflags, &fsaclnv)) != 0) 2489 return (error); 2490 2491 /* 2492 * Verify nvlist is constructed correctly 2493 */ 2494 if ((error = zfs_deleg_verify_nvlist(fsaclnv)) != 0) { 2495 nvlist_free(fsaclnv); 2496 return (EINVAL); 2497 } 2498 2499 /* 2500 * If we don't have PRIV_SYS_MOUNT, then validate 2501 * that user is allowed to hand out each permission in 2502 * the nvlist(s) 2503 */ 2504 2505 error = secpolicy_zfs(CRED()); 2506 if (error) { 2507 if (zc->zc_perm_action == B_FALSE) { 2508 error = dsl_deleg_can_allow(zc->zc_name, 2509 fsaclnv, CRED()); 2510 } else { 2511 error = dsl_deleg_can_unallow(zc->zc_name, 2512 fsaclnv, CRED()); 2513 } 2514 } 2515 2516 if (error == 0) 2517 error = dsl_deleg_set(zc->zc_name, fsaclnv, zc->zc_perm_action); 2518 2519 nvlist_free(fsaclnv); 2520 return (error); 2521 } 2522 2523 /* 2524 * inputs: 2525 * zc_name name of filesystem 2526 * 2527 * outputs: 2528 * zc_nvlist_src{_size} nvlist of delegated permissions 2529 */ 2530 static int 2531 zfs_ioc_get_fsacl(zfs_cmd_t *zc) 2532 { 2533 nvlist_t *nvp; 2534 int error; 2535 2536 if ((error = dsl_deleg_get(zc->zc_name, &nvp)) == 0) { 2537 error = put_nvlist(zc, nvp); 2538 nvlist_free(nvp); 2539 } 2540 2541 return (error); 2542 } 2543 2544 /* 2545 * Search the vfs list for a specified resource. Returns a pointer to it 2546 * or NULL if no suitable entry is found. The caller of this routine 2547 * is responsible for releasing the returned vfs pointer. 2548 */ 2549 static vfs_t * 2550 zfs_get_vfs(const char *resource) 2551 { 2552 struct vfs *vfsp; 2553 struct vfs *vfs_found = NULL; 2554 2555 vfs_list_read_lock(); 2556 vfsp = rootvfs; 2557 do { 2558 if (strcmp(refstr_value(vfsp->vfs_resource), resource) == 0) { 2559 VFS_HOLD(vfsp); 2560 vfs_found = vfsp; 2561 break; 2562 } 2563 vfsp = vfsp->vfs_next; 2564 } while (vfsp != rootvfs); 2565 vfs_list_unlock(); 2566 return (vfs_found); 2567 } 2568 2569 /* ARGSUSED */ 2570 static void 2571 zfs_create_cb(objset_t *os, void *arg, cred_t *cr, dmu_tx_t *tx) 2572 { 2573 zfs_creat_t *zct = arg; 2574 2575 zfs_create_fs(os, cr, zct->zct_zplprops, tx); 2576 } 2577 2578 #define ZFS_PROP_UNDEFINED ((uint64_t)-1) 2579 2580 /* 2581 * inputs: 2582 * createprops list of properties requested by creator 2583 * default_zplver zpl version to use if unspecified in createprops 2584 * fuids_ok fuids allowed in this version of the spa? 2585 * os parent objset pointer (NULL if root fs) 2586 * 2587 * outputs: 2588 * zplprops values for the zplprops we attach to the master node object 2589 * is_ci true if requested file system will be purely case-insensitive 2590 * 2591 * Determine the settings for utf8only, normalization and 2592 * casesensitivity. Specific values may have been requested by the 2593 * creator and/or we can inherit values from the parent dataset. If 2594 * the file system is of too early a vintage, a creator can not 2595 * request settings for these properties, even if the requested 2596 * setting is the default value. We don't actually want to create dsl 2597 * properties for these, so remove them from the source nvlist after 2598 * processing. 2599 */ 2600 static int 2601 zfs_fill_zplprops_impl(objset_t *os, uint64_t zplver, 2602 boolean_t fuids_ok, nvlist_t *createprops, nvlist_t *zplprops, 2603 boolean_t *is_ci) 2604 { 2605 uint64_t sense = ZFS_PROP_UNDEFINED; 2606 uint64_t norm = ZFS_PROP_UNDEFINED; 2607 uint64_t u8 = ZFS_PROP_UNDEFINED; 2608 2609 ASSERT(zplprops != NULL); 2610 2611 /* 2612 * Pull out creator prop choices, if any. 2613 */ 2614 if (createprops) { 2615 (void) nvlist_lookup_uint64(createprops, 2616 zfs_prop_to_name(ZFS_PROP_VERSION), &zplver); 2617 (void) nvlist_lookup_uint64(createprops, 2618 zfs_prop_to_name(ZFS_PROP_NORMALIZE), &norm); 2619 (void) nvlist_remove_all(createprops, 2620 zfs_prop_to_name(ZFS_PROP_NORMALIZE)); 2621 (void) nvlist_lookup_uint64(createprops, 2622 zfs_prop_to_name(ZFS_PROP_UTF8ONLY), &u8); 2623 (void) nvlist_remove_all(createprops, 2624 zfs_prop_to_name(ZFS_PROP_UTF8ONLY)); 2625 (void) nvlist_lookup_uint64(createprops, 2626 zfs_prop_to_name(ZFS_PROP_CASE), &sense); 2627 (void) nvlist_remove_all(createprops, 2628 zfs_prop_to_name(ZFS_PROP_CASE)); 2629 } 2630 2631 /* 2632 * If the zpl version requested is whacky or the file system 2633 * or pool is version is too "young" to support normalization 2634 * and the creator tried to set a value for one of the props, 2635 * error out. 2636 */ 2637 if ((zplver < ZPL_VERSION_INITIAL || zplver > ZPL_VERSION) || 2638 (zplver >= ZPL_VERSION_FUID && !fuids_ok) || 2639 (zplver < ZPL_VERSION_NORMALIZATION && 2640 (norm != ZFS_PROP_UNDEFINED || u8 != ZFS_PROP_UNDEFINED || 2641 sense != ZFS_PROP_UNDEFINED))) 2642 return (ENOTSUP); 2643 2644 /* 2645 * Put the version in the zplprops 2646 */ 2647 VERIFY(nvlist_add_uint64(zplprops, 2648 zfs_prop_to_name(ZFS_PROP_VERSION), zplver) == 0); 2649 2650 if (norm == ZFS_PROP_UNDEFINED) 2651 VERIFY(zfs_get_zplprop(os, ZFS_PROP_NORMALIZE, &norm) == 0); 2652 VERIFY(nvlist_add_uint64(zplprops, 2653 zfs_prop_to_name(ZFS_PROP_NORMALIZE), norm) == 0); 2654 2655 /* 2656 * If we're normalizing, names must always be valid UTF-8 strings. 2657 */ 2658 if (norm) 2659 u8 = 1; 2660 if (u8 == ZFS_PROP_UNDEFINED) 2661 VERIFY(zfs_get_zplprop(os, ZFS_PROP_UTF8ONLY, &u8) == 0); 2662 VERIFY(nvlist_add_uint64(zplprops, 2663 zfs_prop_to_name(ZFS_PROP_UTF8ONLY), u8) == 0); 2664 2665 if (sense == ZFS_PROP_UNDEFINED) 2666 VERIFY(zfs_get_zplprop(os, ZFS_PROP_CASE, &sense) == 0); 2667 VERIFY(nvlist_add_uint64(zplprops, 2668 zfs_prop_to_name(ZFS_PROP_CASE), sense) == 0); 2669 2670 if (is_ci) 2671 *is_ci = (sense == ZFS_CASE_INSENSITIVE); 2672 2673 return (0); 2674 } 2675 2676 static int 2677 zfs_fill_zplprops(const char *dataset, nvlist_t *createprops, 2678 nvlist_t *zplprops, boolean_t *is_ci) 2679 { 2680 boolean_t fuids_ok = B_TRUE; 2681 uint64_t zplver = ZPL_VERSION; 2682 objset_t *os = NULL; 2683 char parentname[MAXNAMELEN]; 2684 char *cp; 2685 int error; 2686 2687 (void) strlcpy(parentname, dataset, sizeof (parentname)); 2688 cp = strrchr(parentname, '/'); 2689 ASSERT(cp != NULL); 2690 cp[0] = '\0'; 2691 2692 if (zfs_earlier_version(dataset, SPA_VERSION_USERSPACE)) 2693 zplver = ZPL_VERSION_USERSPACE - 1; 2694 if (zfs_earlier_version(dataset, SPA_VERSION_FUID)) { 2695 zplver = ZPL_VERSION_FUID - 1; 2696 fuids_ok = B_FALSE; 2697 } 2698 2699 /* 2700 * Open parent object set so we can inherit zplprop values. 2701 */ 2702 if ((error = dmu_objset_hold(parentname, FTAG, &os)) != 0) 2703 return (error); 2704 2705 error = zfs_fill_zplprops_impl(os, zplver, fuids_ok, createprops, 2706 zplprops, is_ci); 2707 dmu_objset_rele(os, FTAG); 2708 return (error); 2709 } 2710 2711 static int 2712 zfs_fill_zplprops_root(uint64_t spa_vers, nvlist_t *createprops, 2713 nvlist_t *zplprops, boolean_t *is_ci) 2714 { 2715 boolean_t fuids_ok = B_TRUE; 2716 uint64_t zplver = ZPL_VERSION; 2717 int error; 2718 2719 if (spa_vers < SPA_VERSION_FUID) { 2720 zplver = ZPL_VERSION_FUID - 1; 2721 fuids_ok = B_FALSE; 2722 } 2723 2724 error = zfs_fill_zplprops_impl(NULL, zplver, fuids_ok, createprops, 2725 zplprops, is_ci); 2726 return (error); 2727 } 2728 2729 /* 2730 * inputs: 2731 * zc_objset_type type of objset to create (fs vs zvol) 2732 * zc_name name of new objset 2733 * zc_value name of snapshot to clone from (may be empty) 2734 * zc_nvlist_src{_size} nvlist of properties to apply 2735 * 2736 * outputs: none 2737 */ 2738 static int 2739 zfs_ioc_create(zfs_cmd_t *zc) 2740 { 2741 objset_t *clone; 2742 int error = 0; 2743 zfs_creat_t zct; 2744 nvlist_t *nvprops = NULL; 2745 void (*cbfunc)(objset_t *os, void *arg, cred_t *cr, dmu_tx_t *tx); 2746 dmu_objset_type_t type = zc->zc_objset_type; 2747 2748 switch (type) { 2749 2750 case DMU_OST_ZFS: 2751 cbfunc = zfs_create_cb; 2752 break; 2753 2754 case DMU_OST_ZVOL: 2755 cbfunc = zvol_create_cb; 2756 break; 2757 2758 default: 2759 cbfunc = NULL; 2760 break; 2761 } 2762 if (strchr(zc->zc_name, '@') || 2763 strchr(zc->zc_name, '%')) 2764 return (EINVAL); 2765 2766 if (zc->zc_nvlist_src != NULL && 2767 (error = get_nvlist(zc->zc_nvlist_src, zc->zc_nvlist_src_size, 2768 zc->zc_iflags, &nvprops)) != 0) 2769 return (error); 2770 2771 zct.zct_zplprops = NULL; 2772 zct.zct_props = nvprops; 2773 2774 if (zc->zc_value[0] != '\0') { 2775 /* 2776 * We're creating a clone of an existing snapshot. 2777 */ 2778 zc->zc_value[sizeof (zc->zc_value) - 1] = '\0'; 2779 if (dataset_namecheck(zc->zc_value, NULL, NULL) != 0) { 2780 nvlist_free(nvprops); 2781 return (EINVAL); 2782 } 2783 2784 error = dmu_objset_hold(zc->zc_value, FTAG, &clone); 2785 if (error) { 2786 nvlist_free(nvprops); 2787 return (error); 2788 } 2789 2790 error = dmu_objset_clone(zc->zc_name, dmu_objset_ds(clone), 0); 2791 dmu_objset_rele(clone, FTAG); 2792 if (error) { 2793 nvlist_free(nvprops); 2794 return (error); 2795 } 2796 } else { 2797 boolean_t is_insensitive = B_FALSE; 2798 2799 if (cbfunc == NULL) { 2800 nvlist_free(nvprops); 2801 return (EINVAL); 2802 } 2803 2804 if (type == DMU_OST_ZVOL) { 2805 uint64_t volsize, volblocksize; 2806 2807 if (nvprops == NULL || 2808 nvlist_lookup_uint64(nvprops, 2809 zfs_prop_to_name(ZFS_PROP_VOLSIZE), 2810 &volsize) != 0) { 2811 nvlist_free(nvprops); 2812 return (EINVAL); 2813 } 2814 2815 if ((error = nvlist_lookup_uint64(nvprops, 2816 zfs_prop_to_name(ZFS_PROP_VOLBLOCKSIZE), 2817 &volblocksize)) != 0 && error != ENOENT) { 2818 nvlist_free(nvprops); 2819 return (EINVAL); 2820 } 2821 2822 if (error != 0) 2823 volblocksize = zfs_prop_default_numeric( 2824 ZFS_PROP_VOLBLOCKSIZE); 2825 2826 if ((error = zvol_check_volblocksize( 2827 volblocksize)) != 0 || 2828 (error = zvol_check_volsize(volsize, 2829 volblocksize)) != 0) { 2830 nvlist_free(nvprops); 2831 return (error); 2832 } 2833 } else if (type == DMU_OST_ZFS) { 2834 int error; 2835 2836 /* 2837 * We have to have normalization and 2838 * case-folding flags correct when we do the 2839 * file system creation, so go figure them out 2840 * now. 2841 */ 2842 VERIFY(nvlist_alloc(&zct.zct_zplprops, 2843 NV_UNIQUE_NAME, KM_SLEEP) == 0); 2844 error = zfs_fill_zplprops(zc->zc_name, nvprops, 2845 zct.zct_zplprops, &is_insensitive); 2846 if (error != 0) { 2847 nvlist_free(nvprops); 2848 nvlist_free(zct.zct_zplprops); 2849 return (error); 2850 } 2851 } 2852 error = dmu_objset_create(zc->zc_name, type, 2853 is_insensitive ? DS_FLAG_CI_DATASET : 0, cbfunc, &zct); 2854 nvlist_free(zct.zct_zplprops); 2855 } 2856 2857 /* 2858 * It would be nice to do this atomically. 2859 */ 2860 if (error == 0) { 2861 error = zfs_set_prop_nvlist(zc->zc_name, ZPROP_SRC_LOCAL, 2862 nvprops, NULL); 2863 if (error != 0) 2864 (void) dmu_objset_destroy(zc->zc_name, B_FALSE); 2865 } 2866 nvlist_free(nvprops); 2867 return (error); 2868 } 2869 2870 /* 2871 * inputs: 2872 * zc_name name of filesystem 2873 * zc_value short name of snapshot 2874 * zc_cookie recursive flag 2875 * zc_nvlist_src[_size] property list 2876 * 2877 * outputs: 2878 * zc_value short snapname (i.e. part after the '@') 2879 */ 2880 static int 2881 zfs_ioc_snapshot(zfs_cmd_t *zc) 2882 { 2883 nvlist_t *nvprops = NULL; 2884 int error; 2885 boolean_t recursive = zc->zc_cookie; 2886 2887 if (snapshot_namecheck(zc->zc_value, NULL, NULL) != 0) 2888 return (EINVAL); 2889 2890 if (zc->zc_nvlist_src != NULL && 2891 (error = get_nvlist(zc->zc_nvlist_src, zc->zc_nvlist_src_size, 2892 zc->zc_iflags, &nvprops)) != 0) 2893 return (error); 2894 2895 error = zfs_check_userprops(zc->zc_name, nvprops); 2896 if (error) 2897 goto out; 2898 2899 if (!nvlist_empty(nvprops) && 2900 zfs_earlier_version(zc->zc_name, SPA_VERSION_SNAP_PROPS)) { 2901 error = ENOTSUP; 2902 goto out; 2903 } 2904 2905 error = dmu_objset_snapshot(zc->zc_name, zc->zc_value, 2906 nvprops, recursive); 2907 2908 out: 2909 nvlist_free(nvprops); 2910 return (error); 2911 } 2912 2913 int 2914 zfs_unmount_snap(const char *name, void *arg) 2915 { 2916 vfs_t *vfsp = NULL; 2917 2918 if (arg) { 2919 char *snapname = arg; 2920 char *fullname = kmem_asprintf("%s@%s", name, snapname); 2921 vfsp = zfs_get_vfs(fullname); 2922 strfree(fullname); 2923 } else if (strchr(name, '@')) { 2924 vfsp = zfs_get_vfs(name); 2925 } 2926 2927 if (vfsp) { 2928 /* 2929 * Always force the unmount for snapshots. 2930 */ 2931 int flag = MS_FORCE; 2932 int err; 2933 2934 if ((err = vn_vfswlock(vfsp->vfs_vnodecovered)) != 0) { 2935 VFS_RELE(vfsp); 2936 return (err); 2937 } 2938 VFS_RELE(vfsp); 2939 if ((err = dounmount(vfsp, flag, kcred)) != 0) 2940 return (err); 2941 } 2942 return (0); 2943 } 2944 2945 /* 2946 * inputs: 2947 * zc_name name of filesystem 2948 * zc_value short name of snapshot 2949 * zc_defer_destroy mark for deferred destroy 2950 * 2951 * outputs: none 2952 */ 2953 static int 2954 zfs_ioc_destroy_snaps(zfs_cmd_t *zc) 2955 { 2956 int err; 2957 2958 if (snapshot_namecheck(zc->zc_value, NULL, NULL) != 0) 2959 return (EINVAL); 2960 err = dmu_objset_find(zc->zc_name, 2961 zfs_unmount_snap, zc->zc_value, DS_FIND_CHILDREN); 2962 if (err) 2963 return (err); 2964 return (dmu_snapshots_destroy(zc->zc_name, zc->zc_value, 2965 zc->zc_defer_destroy)); 2966 } 2967 2968 /* 2969 * inputs: 2970 * zc_name name of dataset to destroy 2971 * zc_objset_type type of objset 2972 * zc_defer_destroy mark for deferred destroy 2973 * 2974 * outputs: none 2975 */ 2976 static int 2977 zfs_ioc_destroy(zfs_cmd_t *zc) 2978 { 2979 int err; 2980 if (strchr(zc->zc_name, '@') && zc->zc_objset_type == DMU_OST_ZFS) { 2981 err = zfs_unmount_snap(zc->zc_name, NULL); 2982 if (err) 2983 return (err); 2984 } 2985 2986 err = dmu_objset_destroy(zc->zc_name, zc->zc_defer_destroy); 2987 if (zc->zc_objset_type == DMU_OST_ZVOL && err == 0) 2988 (void) zvol_remove_minor(zc->zc_name); 2989 return (err); 2990 } 2991 2992 /* 2993 * inputs: 2994 * zc_name name of dataset to rollback (to most recent snapshot) 2995 * 2996 * outputs: none 2997 */ 2998 static int 2999 zfs_ioc_rollback(zfs_cmd_t *zc) 3000 { 3001 dsl_dataset_t *ds, *clone; 3002 int error; 3003 zfsvfs_t *zfsvfs; 3004 char *clone_name; 3005 3006 error = dsl_dataset_hold(zc->zc_name, FTAG, &ds); 3007 if (error) 3008 return (error); 3009 3010 /* must not be a snapshot */ 3011 if (dsl_dataset_is_snapshot(ds)) { 3012 dsl_dataset_rele(ds, FTAG); 3013 return (EINVAL); 3014 } 3015 3016 /* must have a most recent snapshot */ 3017 if (ds->ds_phys->ds_prev_snap_txg < TXG_INITIAL) { 3018 dsl_dataset_rele(ds, FTAG); 3019 return (EINVAL); 3020 } 3021 3022 /* 3023 * Create clone of most recent snapshot. 3024 */ 3025 clone_name = kmem_asprintf("%s/%%rollback", zc->zc_name); 3026 error = dmu_objset_clone(clone_name, ds->ds_prev, DS_FLAG_INCONSISTENT); 3027 if (error) 3028 goto out; 3029 3030 error = dsl_dataset_own(clone_name, B_TRUE, FTAG, &clone); 3031 if (error) 3032 goto out; 3033 3034 /* 3035 * Do clone swap. 3036 */ 3037 if (getzfsvfs(zc->zc_name, &zfsvfs) == 0) { 3038 error = zfs_suspend_fs(zfsvfs); 3039 if (error == 0) { 3040 int resume_err; 3041 3042 if (dsl_dataset_tryown(ds, B_FALSE, FTAG)) { 3043 error = dsl_dataset_clone_swap(clone, ds, 3044 B_TRUE); 3045 dsl_dataset_disown(ds, FTAG); 3046 ds = NULL; 3047 } else { 3048 error = EBUSY; 3049 } 3050 resume_err = zfs_resume_fs(zfsvfs, zc->zc_name); 3051 error = error ? error : resume_err; 3052 } 3053 VFS_RELE(zfsvfs->z_vfs); 3054 } else { 3055 if (dsl_dataset_tryown(ds, B_FALSE, FTAG)) { 3056 error = dsl_dataset_clone_swap(clone, ds, B_TRUE); 3057 dsl_dataset_disown(ds, FTAG); 3058 ds = NULL; 3059 } else { 3060 error = EBUSY; 3061 } 3062 } 3063 3064 /* 3065 * Destroy clone (which also closes it). 3066 */ 3067 (void) dsl_dataset_destroy(clone, FTAG, B_FALSE); 3068 3069 out: 3070 strfree(clone_name); 3071 if (ds) 3072 dsl_dataset_rele(ds, FTAG); 3073 return (error); 3074 } 3075 3076 /* 3077 * inputs: 3078 * zc_name old name of dataset 3079 * zc_value new name of dataset 3080 * zc_cookie recursive flag (only valid for snapshots) 3081 * 3082 * outputs: none 3083 */ 3084 static int 3085 zfs_ioc_rename(zfs_cmd_t *zc) 3086 { 3087 boolean_t recursive = zc->zc_cookie & 1; 3088 3089 zc->zc_value[sizeof (zc->zc_value) - 1] = '\0'; 3090 if (dataset_namecheck(zc->zc_value, NULL, NULL) != 0 || 3091 strchr(zc->zc_value, '%')) 3092 return (EINVAL); 3093 3094 /* 3095 * Unmount snapshot unless we're doing a recursive rename, 3096 * in which case the dataset code figures out which snapshots 3097 * to unmount. 3098 */ 3099 if (!recursive && strchr(zc->zc_name, '@') != NULL && 3100 zc->zc_objset_type == DMU_OST_ZFS) { 3101 int err = zfs_unmount_snap(zc->zc_name, NULL); 3102 if (err) 3103 return (err); 3104 } 3105 if (zc->zc_objset_type == DMU_OST_ZVOL) 3106 (void) zvol_remove_minor(zc->zc_name); 3107 return (dmu_objset_rename(zc->zc_name, zc->zc_value, recursive)); 3108 } 3109 3110 static int 3111 zfs_check_settable(const char *dsname, nvpair_t *pair, cred_t *cr) 3112 { 3113 const char *propname = nvpair_name(pair); 3114 boolean_t issnap = (strchr(dsname, '@') != NULL); 3115 zfs_prop_t prop = zfs_name_to_prop(propname); 3116 uint64_t intval; 3117 int err; 3118 3119 if (prop == ZPROP_INVAL) { 3120 if (zfs_prop_user(propname)) { 3121 if (err = zfs_secpolicy_write_perms(dsname, 3122 ZFS_DELEG_PERM_USERPROP, cr)) 3123 return (err); 3124 return (0); 3125 } 3126 3127 if (!issnap && zfs_prop_userquota(propname)) { 3128 const char *perm = NULL; 3129 const char *uq_prefix = 3130 zfs_userquota_prop_prefixes[ZFS_PROP_USERQUOTA]; 3131 const char *gq_prefix = 3132 zfs_userquota_prop_prefixes[ZFS_PROP_GROUPQUOTA]; 3133 3134 if (strncmp(propname, uq_prefix, 3135 strlen(uq_prefix)) == 0) { 3136 perm = ZFS_DELEG_PERM_USERQUOTA; 3137 } else if (strncmp(propname, gq_prefix, 3138 strlen(gq_prefix)) == 0) { 3139 perm = ZFS_DELEG_PERM_GROUPQUOTA; 3140 } else { 3141 /* USERUSED and GROUPUSED are read-only */ 3142 return (EINVAL); 3143 } 3144 3145 if (err = zfs_secpolicy_write_perms(dsname, perm, cr)) 3146 return (err); 3147 return (0); 3148 } 3149 3150 return (EINVAL); 3151 } 3152 3153 if (issnap) 3154 return (EINVAL); 3155 3156 if (nvpair_type(pair) == DATA_TYPE_NVLIST) { 3157 /* 3158 * dsl_prop_get_all_impl() returns properties in this 3159 * format. 3160 */ 3161 nvlist_t *attrs; 3162 VERIFY(nvpair_value_nvlist(pair, &attrs) == 0); 3163 VERIFY(nvlist_lookup_nvpair(attrs, ZPROP_VALUE, 3164 &pair) == 0); 3165 } 3166 3167 /* 3168 * Check that this value is valid for this pool version 3169 */ 3170 switch (prop) { 3171 case ZFS_PROP_COMPRESSION: 3172 /* 3173 * If the user specified gzip compression, make sure 3174 * the SPA supports it. We ignore any errors here since 3175 * we'll catch them later. 3176 */ 3177 if (nvpair_type(pair) == DATA_TYPE_UINT64 && 3178 nvpair_value_uint64(pair, &intval) == 0) { 3179 if (intval >= ZIO_COMPRESS_GZIP_1 && 3180 intval <= ZIO_COMPRESS_GZIP_9 && 3181 zfs_earlier_version(dsname, 3182 SPA_VERSION_GZIP_COMPRESSION)) { 3183 return (ENOTSUP); 3184 } 3185 3186 if (intval == ZIO_COMPRESS_ZLE && 3187 zfs_earlier_version(dsname, 3188 SPA_VERSION_ZLE_COMPRESSION)) 3189 return (ENOTSUP); 3190 3191 /* 3192 * If this is a bootable dataset then 3193 * verify that the compression algorithm 3194 * is supported for booting. We must return 3195 * something other than ENOTSUP since it 3196 * implies a downrev pool version. 3197 */ 3198 if (zfs_is_bootfs(dsname) && 3199 !BOOTFS_COMPRESS_VALID(intval)) { 3200 return (ERANGE); 3201 } 3202 } 3203 break; 3204 3205 case ZFS_PROP_COPIES: 3206 if (zfs_earlier_version(dsname, SPA_VERSION_DITTO_BLOCKS)) 3207 return (ENOTSUP); 3208 break; 3209 3210 case ZFS_PROP_DEDUP: 3211 if (zfs_earlier_version(dsname, SPA_VERSION_DEDUP)) 3212 return (ENOTSUP); 3213 break; 3214 3215 case ZFS_PROP_SHARESMB: 3216 if (zpl_earlier_version(dsname, ZPL_VERSION_FUID)) 3217 return (ENOTSUP); 3218 break; 3219 3220 case ZFS_PROP_ACLINHERIT: 3221 if (nvpair_type(pair) == DATA_TYPE_UINT64 && 3222 nvpair_value_uint64(pair, &intval) == 0) { 3223 if (intval == ZFS_ACL_PASSTHROUGH_X && 3224 zfs_earlier_version(dsname, 3225 SPA_VERSION_PASSTHROUGH_X)) 3226 return (ENOTSUP); 3227 } 3228 break; 3229 } 3230 3231 return (zfs_secpolicy_setprop(dsname, prop, pair, CRED())); 3232 } 3233 3234 /* 3235 * Removes properties from the given props list that fail permission checks 3236 * needed to clear them and to restore them in case of a receive error. For each 3237 * property, make sure we have both set and inherit permissions. 3238 * 3239 * Returns the first error encountered if any permission checks fail. If the 3240 * caller provides a non-NULL errlist, it also gives the complete list of names 3241 * of all the properties that failed a permission check along with the 3242 * corresponding error numbers. The caller is responsible for freeing the 3243 * returned errlist. 3244 * 3245 * If every property checks out successfully, zero is returned and the list 3246 * pointed at by errlist is NULL. 3247 */ 3248 static int 3249 zfs_check_clearable(char *dataset, nvlist_t *props, nvlist_t **errlist) 3250 { 3251 zfs_cmd_t *zc; 3252 nvpair_t *pair, *next_pair; 3253 nvlist_t *errors; 3254 int err, rv = 0; 3255 3256 if (props == NULL) 3257 return (0); 3258 3259 VERIFY(nvlist_alloc(&errors, NV_UNIQUE_NAME, KM_SLEEP) == 0); 3260 3261 zc = kmem_alloc(sizeof (zfs_cmd_t), KM_SLEEP); 3262 (void) strcpy(zc->zc_name, dataset); 3263 pair = nvlist_next_nvpair(props, NULL); 3264 while (pair != NULL) { 3265 next_pair = nvlist_next_nvpair(props, pair); 3266 3267 (void) strcpy(zc->zc_value, nvpair_name(pair)); 3268 if ((err = zfs_check_settable(dataset, pair, CRED())) != 0 || 3269 (err = zfs_secpolicy_inherit(zc, CRED())) != 0) { 3270 VERIFY(nvlist_remove_nvpair(props, pair) == 0); 3271 VERIFY(nvlist_add_int32(errors, 3272 zc->zc_value, err) == 0); 3273 } 3274 pair = next_pair; 3275 } 3276 kmem_free(zc, sizeof (zfs_cmd_t)); 3277 3278 if ((pair = nvlist_next_nvpair(errors, NULL)) == NULL) { 3279 nvlist_free(errors); 3280 errors = NULL; 3281 } else { 3282 VERIFY(nvpair_value_int32(pair, &rv) == 0); 3283 } 3284 3285 if (errlist == NULL) 3286 nvlist_free(errors); 3287 else 3288 *errlist = errors; 3289 3290 return (rv); 3291 } 3292 3293 static boolean_t 3294 propval_equals(nvpair_t *p1, nvpair_t *p2) 3295 { 3296 if (nvpair_type(p1) == DATA_TYPE_NVLIST) { 3297 /* dsl_prop_get_all_impl() format */ 3298 nvlist_t *attrs; 3299 VERIFY(nvpair_value_nvlist(p1, &attrs) == 0); 3300 VERIFY(nvlist_lookup_nvpair(attrs, ZPROP_VALUE, 3301 &p1) == 0); 3302 } 3303 3304 if (nvpair_type(p2) == DATA_TYPE_NVLIST) { 3305 nvlist_t *attrs; 3306 VERIFY(nvpair_value_nvlist(p2, &attrs) == 0); 3307 VERIFY(nvlist_lookup_nvpair(attrs, ZPROP_VALUE, 3308 &p2) == 0); 3309 } 3310 3311 if (nvpair_type(p1) != nvpair_type(p2)) 3312 return (B_FALSE); 3313 3314 if (nvpair_type(p1) == DATA_TYPE_STRING) { 3315 char *valstr1, *valstr2; 3316 3317 VERIFY(nvpair_value_string(p1, (char **)&valstr1) == 0); 3318 VERIFY(nvpair_value_string(p2, (char **)&valstr2) == 0); 3319 return (strcmp(valstr1, valstr2) == 0); 3320 } else { 3321 uint64_t intval1, intval2; 3322 3323 VERIFY(nvpair_value_uint64(p1, &intval1) == 0); 3324 VERIFY(nvpair_value_uint64(p2, &intval2) == 0); 3325 return (intval1 == intval2); 3326 } 3327 } 3328 3329 /* 3330 * Remove properties from props if they are not going to change (as determined 3331 * by comparison with origprops). Remove them from origprops as well, since we 3332 * do not need to clear or restore properties that won't change. 3333 */ 3334 static void 3335 props_reduce(nvlist_t *props, nvlist_t *origprops) 3336 { 3337 nvpair_t *pair, *next_pair; 3338 3339 if (origprops == NULL) 3340 return; /* all props need to be received */ 3341 3342 pair = nvlist_next_nvpair(props, NULL); 3343 while (pair != NULL) { 3344 const char *propname = nvpair_name(pair); 3345 nvpair_t *match; 3346 3347 next_pair = nvlist_next_nvpair(props, pair); 3348 3349 if ((nvlist_lookup_nvpair(origprops, propname, 3350 &match) != 0) || !propval_equals(pair, match)) 3351 goto next; /* need to set received value */ 3352 3353 /* don't clear the existing received value */ 3354 (void) nvlist_remove_nvpair(origprops, match); 3355 /* don't bother receiving the property */ 3356 (void) nvlist_remove_nvpair(props, pair); 3357 next: 3358 pair = next_pair; 3359 } 3360 } 3361 3362 #ifdef DEBUG 3363 static boolean_t zfs_ioc_recv_inject_err; 3364 #endif 3365 3366 /* 3367 * inputs: 3368 * zc_name name of containing filesystem 3369 * zc_nvlist_src{_size} nvlist of properties to apply 3370 * zc_value name of snapshot to create 3371 * zc_string name of clone origin (if DRR_FLAG_CLONE) 3372 * zc_cookie file descriptor to recv from 3373 * zc_begin_record the BEGIN record of the stream (not byteswapped) 3374 * zc_guid force flag 3375 * 3376 * outputs: 3377 * zc_cookie number of bytes read 3378 * zc_nvlist_dst{_size} error for each unapplied received property 3379 * zc_obj zprop_errflags_t 3380 */ 3381 static int 3382 zfs_ioc_recv(zfs_cmd_t *zc) 3383 { 3384 file_t *fp; 3385 objset_t *os; 3386 dmu_recv_cookie_t drc; 3387 boolean_t force = (boolean_t)zc->zc_guid; 3388 int fd; 3389 int error = 0; 3390 int props_error = 0; 3391 nvlist_t *errors; 3392 offset_t off; 3393 nvlist_t *props = NULL; /* sent properties */ 3394 nvlist_t *origprops = NULL; /* existing properties */ 3395 objset_t *origin = NULL; 3396 char *tosnap; 3397 char tofs[ZFS_MAXNAMELEN]; 3398 boolean_t first_recvd_props = B_FALSE; 3399 3400 if (dataset_namecheck(zc->zc_value, NULL, NULL) != 0 || 3401 strchr(zc->zc_value, '@') == NULL || 3402 strchr(zc->zc_value, '%')) 3403 return (EINVAL); 3404 3405 (void) strcpy(tofs, zc->zc_value); 3406 tosnap = strchr(tofs, '@'); 3407 *tosnap++ = '\0'; 3408 3409 if (zc->zc_nvlist_src != NULL && 3410 (error = get_nvlist(zc->zc_nvlist_src, zc->zc_nvlist_src_size, 3411 zc->zc_iflags, &props)) != 0) 3412 return (error); 3413 3414 fd = zc->zc_cookie; 3415 fp = getf(fd); 3416 if (fp == NULL) { 3417 nvlist_free(props); 3418 return (EBADF); 3419 } 3420 3421 VERIFY(nvlist_alloc(&errors, NV_UNIQUE_NAME, KM_SLEEP) == 0); 3422 3423 if (props && dmu_objset_hold(tofs, FTAG, &os) == 0) { 3424 if ((spa_version(os->os_spa) >= SPA_VERSION_RECVD_PROPS) && 3425 !dsl_prop_get_hasrecvd(os)) { 3426 first_recvd_props = B_TRUE; 3427 } 3428 3429 /* 3430 * If new received properties are supplied, they are to 3431 * completely replace the existing received properties, so stash 3432 * away the existing ones. 3433 */ 3434 if (dsl_prop_get_received(os, &origprops) == 0) { 3435 nvlist_t *errlist = NULL; 3436 /* 3437 * Don't bother writing a property if its value won't 3438 * change (and avoid the unnecessary security checks). 3439 * 3440 * The first receive after SPA_VERSION_RECVD_PROPS is a 3441 * special case where we blow away all local properties 3442 * regardless. 3443 */ 3444 if (!first_recvd_props) 3445 props_reduce(props, origprops); 3446 if (zfs_check_clearable(tofs, origprops, 3447 &errlist) != 0) 3448 (void) nvlist_merge(errors, errlist, 0); 3449 nvlist_free(errlist); 3450 } 3451 3452 dmu_objset_rele(os, FTAG); 3453 } 3454 3455 if (zc->zc_string[0]) { 3456 error = dmu_objset_hold(zc->zc_string, FTAG, &origin); 3457 if (error) 3458 goto out; 3459 } 3460 3461 error = dmu_recv_begin(tofs, tosnap, zc->zc_top_ds, 3462 &zc->zc_begin_record, force, origin, &drc); 3463 if (origin) 3464 dmu_objset_rele(origin, FTAG); 3465 if (error) 3466 goto out; 3467 3468 /* 3469 * Set properties before we receive the stream so that they are applied 3470 * to the new data. Note that we must call dmu_recv_stream() if 3471 * dmu_recv_begin() succeeds. 3472 */ 3473 if (props) { 3474 nvlist_t *errlist; 3475 3476 if (dmu_objset_from_ds(drc.drc_logical_ds, &os) == 0) { 3477 if (drc.drc_newfs) { 3478 if (spa_version(os->os_spa) >= 3479 SPA_VERSION_RECVD_PROPS) 3480 first_recvd_props = B_TRUE; 3481 } else if (origprops != NULL) { 3482 if (clear_received_props(os, tofs, origprops, 3483 first_recvd_props ? NULL : props) != 0) 3484 zc->zc_obj |= ZPROP_ERR_NOCLEAR; 3485 } else { 3486 zc->zc_obj |= ZPROP_ERR_NOCLEAR; 3487 } 3488 dsl_prop_set_hasrecvd(os); 3489 } else if (!drc.drc_newfs) { 3490 zc->zc_obj |= ZPROP_ERR_NOCLEAR; 3491 } 3492 3493 (void) zfs_set_prop_nvlist(tofs, ZPROP_SRC_RECEIVED, 3494 props, &errlist); 3495 (void) nvlist_merge(errors, errlist, 0); 3496 nvlist_free(errlist); 3497 } 3498 3499 if (fit_error_list(zc, &errors) != 0 || put_nvlist(zc, errors) != 0) { 3500 /* 3501 * Caller made zc->zc_nvlist_dst less than the minimum expected 3502 * size or supplied an invalid address. 3503 */ 3504 props_error = EINVAL; 3505 } 3506 3507 off = fp->f_offset; 3508 error = dmu_recv_stream(&drc, fp->f_vnode, &off); 3509 3510 if (error == 0) { 3511 zfsvfs_t *zfsvfs = NULL; 3512 3513 if (getzfsvfs(tofs, &zfsvfs) == 0) { 3514 /* online recv */ 3515 int end_err; 3516 3517 error = zfs_suspend_fs(zfsvfs); 3518 /* 3519 * If the suspend fails, then the recv_end will 3520 * likely also fail, and clean up after itself. 3521 */ 3522 end_err = dmu_recv_end(&drc); 3523 if (error == 0) { 3524 int resume_err = 3525 zfs_resume_fs(zfsvfs, tofs); 3526 error = error ? error : resume_err; 3527 } 3528 error = error ? error : end_err; 3529 VFS_RELE(zfsvfs->z_vfs); 3530 } else { 3531 error = dmu_recv_end(&drc); 3532 } 3533 } 3534 3535 zc->zc_cookie = off - fp->f_offset; 3536 if (VOP_SEEK(fp->f_vnode, fp->f_offset, &off, NULL) == 0) 3537 fp->f_offset = off; 3538 3539 #ifdef DEBUG 3540 if (zfs_ioc_recv_inject_err) { 3541 zfs_ioc_recv_inject_err = B_FALSE; 3542 error = 1; 3543 } 3544 #endif 3545 /* 3546 * On error, restore the original props. 3547 */ 3548 if (error && props) { 3549 if (dmu_objset_hold(tofs, FTAG, &os) == 0) { 3550 if (clear_received_props(os, tofs, props, NULL) != 0) { 3551 /* 3552 * We failed to clear the received properties. 3553 * Since we may have left a $recvd value on the 3554 * system, we can't clear the $hasrecvd flag. 3555 */ 3556 zc->zc_obj |= ZPROP_ERR_NORESTORE; 3557 } else if (first_recvd_props) { 3558 dsl_prop_unset_hasrecvd(os); 3559 } 3560 dmu_objset_rele(os, FTAG); 3561 } else if (!drc.drc_newfs) { 3562 /* We failed to clear the received properties. */ 3563 zc->zc_obj |= ZPROP_ERR_NORESTORE; 3564 } 3565 3566 if (origprops == NULL && !drc.drc_newfs) { 3567 /* We failed to stash the original properties. */ 3568 zc->zc_obj |= ZPROP_ERR_NORESTORE; 3569 } 3570 3571 /* 3572 * dsl_props_set() will not convert RECEIVED to LOCAL on or 3573 * after SPA_VERSION_RECVD_PROPS, so we need to specify LOCAL 3574 * explictly if we're restoring local properties cleared in the 3575 * first new-style receive. 3576 */ 3577 if (origprops != NULL && 3578 zfs_set_prop_nvlist(tofs, (first_recvd_props ? 3579 ZPROP_SRC_LOCAL : ZPROP_SRC_RECEIVED), 3580 origprops, NULL) != 0) { 3581 /* 3582 * We stashed the original properties but failed to 3583 * restore them. 3584 */ 3585 zc->zc_obj |= ZPROP_ERR_NORESTORE; 3586 } 3587 } 3588 out: 3589 nvlist_free(props); 3590 nvlist_free(origprops); 3591 nvlist_free(errors); 3592 releasef(fd); 3593 3594 if (error == 0) 3595 error = props_error; 3596 3597 return (error); 3598 } 3599 3600 /* 3601 * inputs: 3602 * zc_name name of snapshot to send 3603 * zc_value short name of incremental fromsnap (may be empty) 3604 * zc_cookie file descriptor to send stream to 3605 * zc_obj fromorigin flag (mutually exclusive with zc_value) 3606 * 3607 * outputs: none 3608 */ 3609 static int 3610 zfs_ioc_send(zfs_cmd_t *zc) 3611 { 3612 objset_t *fromsnap = NULL; 3613 objset_t *tosnap; 3614 file_t *fp; 3615 int error; 3616 offset_t off; 3617 3618 error = dmu_objset_hold(zc->zc_name, FTAG, &tosnap); 3619 if (error) 3620 return (error); 3621 3622 if (zc->zc_value[0] != '\0') { 3623 char *buf; 3624 char *cp; 3625 3626 buf = kmem_alloc(MAXPATHLEN, KM_SLEEP); 3627 (void) strncpy(buf, zc->zc_name, MAXPATHLEN); 3628 cp = strchr(buf, '@'); 3629 if (cp) 3630 *(cp+1) = 0; 3631 (void) strncat(buf, zc->zc_value, MAXPATHLEN); 3632 error = dmu_objset_hold(buf, FTAG, &fromsnap); 3633 kmem_free(buf, MAXPATHLEN); 3634 if (error) { 3635 dmu_objset_rele(tosnap, FTAG); 3636 return (error); 3637 } 3638 } 3639 3640 fp = getf(zc->zc_cookie); 3641 if (fp == NULL) { 3642 dmu_objset_rele(tosnap, FTAG); 3643 if (fromsnap) 3644 dmu_objset_rele(fromsnap, FTAG); 3645 return (EBADF); 3646 } 3647 3648 off = fp->f_offset; 3649 error = dmu_sendbackup(tosnap, fromsnap, zc->zc_obj, fp->f_vnode, &off); 3650 3651 if (VOP_SEEK(fp->f_vnode, fp->f_offset, &off, NULL) == 0) 3652 fp->f_offset = off; 3653 releasef(zc->zc_cookie); 3654 if (fromsnap) 3655 dmu_objset_rele(fromsnap, FTAG); 3656 dmu_objset_rele(tosnap, FTAG); 3657 return (error); 3658 } 3659 3660 static int 3661 zfs_ioc_inject_fault(zfs_cmd_t *zc) 3662 { 3663 int id, error; 3664 3665 error = zio_inject_fault(zc->zc_name, (int)zc->zc_guid, &id, 3666 &zc->zc_inject_record); 3667 3668 if (error == 0) 3669 zc->zc_guid = (uint64_t)id; 3670 3671 return (error); 3672 } 3673 3674 static int 3675 zfs_ioc_clear_fault(zfs_cmd_t *zc) 3676 { 3677 return (zio_clear_fault((int)zc->zc_guid)); 3678 } 3679 3680 static int 3681 zfs_ioc_inject_list_next(zfs_cmd_t *zc) 3682 { 3683 int id = (int)zc->zc_guid; 3684 int error; 3685 3686 error = zio_inject_list_next(&id, zc->zc_name, sizeof (zc->zc_name), 3687 &zc->zc_inject_record); 3688 3689 zc->zc_guid = id; 3690 3691 return (error); 3692 } 3693 3694 static int 3695 zfs_ioc_error_log(zfs_cmd_t *zc) 3696 { 3697 spa_t *spa; 3698 int error; 3699 size_t count = (size_t)zc->zc_nvlist_dst_size; 3700 3701 if ((error = spa_open(zc->zc_name, &spa, FTAG)) != 0) 3702 return (error); 3703 3704 error = spa_get_errlog(spa, (void *)(uintptr_t)zc->zc_nvlist_dst, 3705 &count); 3706 if (error == 0) 3707 zc->zc_nvlist_dst_size = count; 3708 else 3709 zc->zc_nvlist_dst_size = spa_get_errlog_size(spa); 3710 3711 spa_close(spa, FTAG); 3712 3713 return (error); 3714 } 3715 3716 static int 3717 zfs_ioc_clear(zfs_cmd_t *zc) 3718 { 3719 spa_t *spa; 3720 vdev_t *vd; 3721 int error; 3722 3723 /* 3724 * On zpool clear we also fix up missing slogs 3725 */ 3726 mutex_enter(&spa_namespace_lock); 3727 spa = spa_lookup(zc->zc_name); 3728 if (spa == NULL) { 3729 mutex_exit(&spa_namespace_lock); 3730 return (EIO); 3731 } 3732 if (spa_get_log_state(spa) == SPA_LOG_MISSING) { 3733 /* we need to let spa_open/spa_load clear the chains */ 3734 spa_set_log_state(spa, SPA_LOG_CLEAR); 3735 } 3736 spa->spa_last_open_failed = 0; 3737 mutex_exit(&spa_namespace_lock); 3738 3739 if (zc->zc_cookie & ZPOOL_NO_REWIND) { 3740 error = spa_open(zc->zc_name, &spa, FTAG); 3741 } else { 3742 nvlist_t *policy; 3743 nvlist_t *config = NULL; 3744 3745 if (zc->zc_nvlist_src == NULL) 3746 return (EINVAL); 3747 3748 if ((error = get_nvlist(zc->zc_nvlist_src, 3749 zc->zc_nvlist_src_size, zc->zc_iflags, &policy)) == 0) { 3750 error = spa_open_rewind(zc->zc_name, &spa, FTAG, 3751 policy, &config); 3752 if (config != NULL) { 3753 (void) put_nvlist(zc, config); 3754 nvlist_free(config); 3755 } 3756 nvlist_free(policy); 3757 } 3758 } 3759 3760 if (error) 3761 return (error); 3762 3763 spa_vdev_state_enter(spa, SCL_NONE); 3764 3765 if (zc->zc_guid == 0) { 3766 vd = NULL; 3767 } else { 3768 vd = spa_lookup_by_guid(spa, zc->zc_guid, B_TRUE); 3769 if (vd == NULL) { 3770 (void) spa_vdev_state_exit(spa, NULL, ENODEV); 3771 spa_close(spa, FTAG); 3772 return (ENODEV); 3773 } 3774 } 3775 3776 vdev_clear(spa, vd); 3777 3778 (void) spa_vdev_state_exit(spa, NULL, 0); 3779 3780 /* 3781 * Resume any suspended I/Os. 3782 */ 3783 if (zio_resume(spa) != 0) 3784 error = EIO; 3785 3786 spa_close(spa, FTAG); 3787 3788 return (error); 3789 } 3790 3791 /* 3792 * inputs: 3793 * zc_name name of filesystem 3794 * zc_value name of origin snapshot 3795 * 3796 * outputs: 3797 * zc_string name of conflicting snapshot, if there is one 3798 */ 3799 static int 3800 zfs_ioc_promote(zfs_cmd_t *zc) 3801 { 3802 char *cp; 3803 3804 /* 3805 * We don't need to unmount *all* the origin fs's snapshots, but 3806 * it's easier. 3807 */ 3808 cp = strchr(zc->zc_value, '@'); 3809 if (cp) 3810 *cp = '\0'; 3811 (void) dmu_objset_find(zc->zc_value, 3812 zfs_unmount_snap, NULL, DS_FIND_SNAPSHOTS); 3813 return (dsl_dataset_promote(zc->zc_name, zc->zc_string)); 3814 } 3815 3816 /* 3817 * Retrieve a single {user|group}{used|quota}@... property. 3818 * 3819 * inputs: 3820 * zc_name name of filesystem 3821 * zc_objset_type zfs_userquota_prop_t 3822 * zc_value domain name (eg. "S-1-234-567-89") 3823 * zc_guid RID/UID/GID 3824 * 3825 * outputs: 3826 * zc_cookie property value 3827 */ 3828 static int 3829 zfs_ioc_userspace_one(zfs_cmd_t *zc) 3830 { 3831 zfsvfs_t *zfsvfs; 3832 int error; 3833 3834 if (zc->zc_objset_type >= ZFS_NUM_USERQUOTA_PROPS) 3835 return (EINVAL); 3836 3837 error = zfsvfs_hold(zc->zc_name, FTAG, &zfsvfs); 3838 if (error) 3839 return (error); 3840 3841 error = zfs_userspace_one(zfsvfs, 3842 zc->zc_objset_type, zc->zc_value, zc->zc_guid, &zc->zc_cookie); 3843 zfsvfs_rele(zfsvfs, FTAG); 3844 3845 return (error); 3846 } 3847 3848 /* 3849 * inputs: 3850 * zc_name name of filesystem 3851 * zc_cookie zap cursor 3852 * zc_objset_type zfs_userquota_prop_t 3853 * zc_nvlist_dst[_size] buffer to fill (not really an nvlist) 3854 * 3855 * outputs: 3856 * zc_nvlist_dst[_size] data buffer (array of zfs_useracct_t) 3857 * zc_cookie zap cursor 3858 */ 3859 static int 3860 zfs_ioc_userspace_many(zfs_cmd_t *zc) 3861 { 3862 zfsvfs_t *zfsvfs; 3863 int error; 3864 3865 error = zfsvfs_hold(zc->zc_name, FTAG, &zfsvfs); 3866 if (error) 3867 return (error); 3868 3869 int bufsize = zc->zc_nvlist_dst_size; 3870 void *buf = kmem_alloc(bufsize, KM_SLEEP); 3871 3872 error = zfs_userspace_many(zfsvfs, zc->zc_objset_type, &zc->zc_cookie, 3873 buf, &zc->zc_nvlist_dst_size); 3874 3875 if (error == 0) { 3876 error = xcopyout(buf, 3877 (void *)(uintptr_t)zc->zc_nvlist_dst, 3878 zc->zc_nvlist_dst_size); 3879 } 3880 kmem_free(buf, bufsize); 3881 zfsvfs_rele(zfsvfs, FTAG); 3882 3883 return (error); 3884 } 3885 3886 /* 3887 * inputs: 3888 * zc_name name of filesystem 3889 * 3890 * outputs: 3891 * none 3892 */ 3893 static int 3894 zfs_ioc_userspace_upgrade(zfs_cmd_t *zc) 3895 { 3896 objset_t *os; 3897 int error = 0; 3898 zfsvfs_t *zfsvfs; 3899 3900 if (getzfsvfs(zc->zc_name, &zfsvfs) == 0) { 3901 if (!dmu_objset_userused_enabled(zfsvfs->z_os)) { 3902 /* 3903 * If userused is not enabled, it may be because the 3904 * objset needs to be closed & reopened (to grow the 3905 * objset_phys_t). Suspend/resume the fs will do that. 3906 */ 3907 error = zfs_suspend_fs(zfsvfs); 3908 if (error == 0) 3909 error = zfs_resume_fs(zfsvfs, zc->zc_name); 3910 } 3911 if (error == 0) 3912 error = dmu_objset_userspace_upgrade(zfsvfs->z_os); 3913 VFS_RELE(zfsvfs->z_vfs); 3914 } else { 3915 /* XXX kind of reading contents without owning */ 3916 error = dmu_objset_hold(zc->zc_name, FTAG, &os); 3917 if (error) 3918 return (error); 3919 3920 error = dmu_objset_userspace_upgrade(os); 3921 dmu_objset_rele(os, FTAG); 3922 } 3923 3924 return (error); 3925 } 3926 3927 /* 3928 * We don't want to have a hard dependency 3929 * against some special symbols in sharefs 3930 * nfs, and smbsrv. Determine them if needed when 3931 * the first file system is shared. 3932 * Neither sharefs, nfs or smbsrv are unloadable modules. 3933 */ 3934 int (*znfsexport_fs)(void *arg); 3935 int (*zshare_fs)(enum sharefs_sys_op, share_t *, uint32_t); 3936 int (*zsmbexport_fs)(void *arg, boolean_t add_share); 3937 3938 int zfs_nfsshare_inited; 3939 int zfs_smbshare_inited; 3940 3941 ddi_modhandle_t nfs_mod; 3942 ddi_modhandle_t sharefs_mod; 3943 ddi_modhandle_t smbsrv_mod; 3944 kmutex_t zfs_share_lock; 3945 3946 static int 3947 zfs_init_sharefs() 3948 { 3949 int error; 3950 3951 ASSERT(MUTEX_HELD(&zfs_share_lock)); 3952 /* Both NFS and SMB shares also require sharetab support. */ 3953 if (sharefs_mod == NULL && ((sharefs_mod = 3954 ddi_modopen("fs/sharefs", 3955 KRTLD_MODE_FIRST, &error)) == NULL)) { 3956 return (ENOSYS); 3957 } 3958 if (zshare_fs == NULL && ((zshare_fs = 3959 (int (*)(enum sharefs_sys_op, share_t *, uint32_t)) 3960 ddi_modsym(sharefs_mod, "sharefs_impl", &error)) == NULL)) { 3961 return (ENOSYS); 3962 } 3963 return (0); 3964 } 3965 3966 static int 3967 zfs_ioc_share(zfs_cmd_t *zc) 3968 { 3969 int error; 3970 int opcode; 3971 3972 switch (zc->zc_share.z_sharetype) { 3973 case ZFS_SHARE_NFS: 3974 case ZFS_UNSHARE_NFS: 3975 if (zfs_nfsshare_inited == 0) { 3976 mutex_enter(&zfs_share_lock); 3977 if (nfs_mod == NULL && ((nfs_mod = ddi_modopen("fs/nfs", 3978 KRTLD_MODE_FIRST, &error)) == NULL)) { 3979 mutex_exit(&zfs_share_lock); 3980 return (ENOSYS); 3981 } 3982 if (znfsexport_fs == NULL && 3983 ((znfsexport_fs = (int (*)(void *)) 3984 ddi_modsym(nfs_mod, 3985 "nfs_export", &error)) == NULL)) { 3986 mutex_exit(&zfs_share_lock); 3987 return (ENOSYS); 3988 } 3989 error = zfs_init_sharefs(); 3990 if (error) { 3991 mutex_exit(&zfs_share_lock); 3992 return (ENOSYS); 3993 } 3994 zfs_nfsshare_inited = 1; 3995 mutex_exit(&zfs_share_lock); 3996 } 3997 break; 3998 case ZFS_SHARE_SMB: 3999 case ZFS_UNSHARE_SMB: 4000 if (zfs_smbshare_inited == 0) { 4001 mutex_enter(&zfs_share_lock); 4002 if (smbsrv_mod == NULL && ((smbsrv_mod = 4003 ddi_modopen("drv/smbsrv", 4004 KRTLD_MODE_FIRST, &error)) == NULL)) { 4005 mutex_exit(&zfs_share_lock); 4006 return (ENOSYS); 4007 } 4008 if (zsmbexport_fs == NULL && ((zsmbexport_fs = 4009 (int (*)(void *, boolean_t))ddi_modsym(smbsrv_mod, 4010 "smb_server_share", &error)) == NULL)) { 4011 mutex_exit(&zfs_share_lock); 4012 return (ENOSYS); 4013 } 4014 error = zfs_init_sharefs(); 4015 if (error) { 4016 mutex_exit(&zfs_share_lock); 4017 return (ENOSYS); 4018 } 4019 zfs_smbshare_inited = 1; 4020 mutex_exit(&zfs_share_lock); 4021 } 4022 break; 4023 default: 4024 return (EINVAL); 4025 } 4026 4027 switch (zc->zc_share.z_sharetype) { 4028 case ZFS_SHARE_NFS: 4029 case ZFS_UNSHARE_NFS: 4030 if (error = 4031 znfsexport_fs((void *) 4032 (uintptr_t)zc->zc_share.z_exportdata)) 4033 return (error); 4034 break; 4035 case ZFS_SHARE_SMB: 4036 case ZFS_UNSHARE_SMB: 4037 if (error = zsmbexport_fs((void *) 4038 (uintptr_t)zc->zc_share.z_exportdata, 4039 zc->zc_share.z_sharetype == ZFS_SHARE_SMB ? 4040 B_TRUE: B_FALSE)) { 4041 return (error); 4042 } 4043 break; 4044 } 4045 4046 opcode = (zc->zc_share.z_sharetype == ZFS_SHARE_NFS || 4047 zc->zc_share.z_sharetype == ZFS_SHARE_SMB) ? 4048 SHAREFS_ADD : SHAREFS_REMOVE; 4049 4050 /* 4051 * Add or remove share from sharetab 4052 */ 4053 error = zshare_fs(opcode, 4054 (void *)(uintptr_t)zc->zc_share.z_sharedata, 4055 zc->zc_share.z_sharemax); 4056 4057 return (error); 4058 4059 } 4060 4061 ace_t full_access[] = { 4062 {(uid_t)-1, ACE_ALL_PERMS, ACE_EVERYONE, 0} 4063 }; 4064 4065 /* 4066 * Remove all ACL files in shares dir 4067 */ 4068 static int 4069 zfs_smb_acl_purge(znode_t *dzp) 4070 { 4071 zap_cursor_t zc; 4072 zap_attribute_t zap; 4073 zfsvfs_t *zfsvfs = dzp->z_zfsvfs; 4074 int error; 4075 4076 for (zap_cursor_init(&zc, zfsvfs->z_os, dzp->z_id); 4077 (error = zap_cursor_retrieve(&zc, &zap)) == 0; 4078 zap_cursor_advance(&zc)) { 4079 if ((error = VOP_REMOVE(ZTOV(dzp), zap.za_name, kcred, 4080 NULL, 0)) != 0) 4081 break; 4082 } 4083 zap_cursor_fini(&zc); 4084 return (error); 4085 } 4086 4087 static int 4088 zfs_ioc_smb_acl(zfs_cmd_t *zc) 4089 { 4090 vnode_t *vp; 4091 znode_t *dzp; 4092 vnode_t *resourcevp = NULL; 4093 znode_t *sharedir; 4094 zfsvfs_t *zfsvfs; 4095 nvlist_t *nvlist; 4096 char *src, *target; 4097 vattr_t vattr; 4098 vsecattr_t vsec; 4099 int error = 0; 4100 4101 if ((error = lookupname(zc->zc_value, UIO_SYSSPACE, 4102 NO_FOLLOW, NULL, &vp)) != 0) 4103 return (error); 4104 4105 /* Now make sure mntpnt and dataset are ZFS */ 4106 4107 if (vp->v_vfsp->vfs_fstype != zfsfstype || 4108 (strcmp((char *)refstr_value(vp->v_vfsp->vfs_resource), 4109 zc->zc_name) != 0)) { 4110 VN_RELE(vp); 4111 return (EINVAL); 4112 } 4113 4114 dzp = VTOZ(vp); 4115 zfsvfs = dzp->z_zfsvfs; 4116 ZFS_ENTER(zfsvfs); 4117 4118 /* 4119 * Create share dir if its missing. 4120 */ 4121 mutex_enter(&zfsvfs->z_lock); 4122 if (zfsvfs->z_shares_dir == 0) { 4123 dmu_tx_t *tx; 4124 4125 tx = dmu_tx_create(zfsvfs->z_os); 4126 dmu_tx_hold_zap(tx, MASTER_NODE_OBJ, TRUE, 4127 ZFS_SHARES_DIR); 4128 dmu_tx_hold_zap(tx, DMU_NEW_OBJECT, FALSE, NULL); 4129 error = dmu_tx_assign(tx, TXG_WAIT); 4130 if (error) { 4131 dmu_tx_abort(tx); 4132 } else { 4133 error = zfs_create_share_dir(zfsvfs, tx); 4134 dmu_tx_commit(tx); 4135 } 4136 if (error) { 4137 mutex_exit(&zfsvfs->z_lock); 4138 VN_RELE(vp); 4139 ZFS_EXIT(zfsvfs); 4140 return (error); 4141 } 4142 } 4143 mutex_exit(&zfsvfs->z_lock); 4144 4145 ASSERT(zfsvfs->z_shares_dir); 4146 if ((error = zfs_zget(zfsvfs, zfsvfs->z_shares_dir, &sharedir)) != 0) { 4147 VN_RELE(vp); 4148 ZFS_EXIT(zfsvfs); 4149 return (error); 4150 } 4151 4152 switch (zc->zc_cookie) { 4153 case ZFS_SMB_ACL_ADD: 4154 vattr.va_mask = AT_MODE|AT_UID|AT_GID|AT_TYPE; 4155 vattr.va_type = VREG; 4156 vattr.va_mode = S_IFREG|0777; 4157 vattr.va_uid = 0; 4158 vattr.va_gid = 0; 4159 4160 vsec.vsa_mask = VSA_ACE; 4161 vsec.vsa_aclentp = &full_access; 4162 vsec.vsa_aclentsz = sizeof (full_access); 4163 vsec.vsa_aclcnt = 1; 4164 4165 error = VOP_CREATE(ZTOV(sharedir), zc->zc_string, 4166 &vattr, EXCL, 0, &resourcevp, kcred, 0, NULL, &vsec); 4167 if (resourcevp) 4168 VN_RELE(resourcevp); 4169 break; 4170 4171 case ZFS_SMB_ACL_REMOVE: 4172 error = VOP_REMOVE(ZTOV(sharedir), zc->zc_string, kcred, 4173 NULL, 0); 4174 break; 4175 4176 case ZFS_SMB_ACL_RENAME: 4177 if ((error = get_nvlist(zc->zc_nvlist_src, 4178 zc->zc_nvlist_src_size, zc->zc_iflags, &nvlist)) != 0) { 4179 VN_RELE(vp); 4180 ZFS_EXIT(zfsvfs); 4181 return (error); 4182 } 4183 if (nvlist_lookup_string(nvlist, ZFS_SMB_ACL_SRC, &src) || 4184 nvlist_lookup_string(nvlist, ZFS_SMB_ACL_TARGET, 4185 &target)) { 4186 VN_RELE(vp); 4187 VN_RELE(ZTOV(sharedir)); 4188 ZFS_EXIT(zfsvfs); 4189 nvlist_free(nvlist); 4190 return (error); 4191 } 4192 error = VOP_RENAME(ZTOV(sharedir), src, ZTOV(sharedir), target, 4193 kcred, NULL, 0); 4194 nvlist_free(nvlist); 4195 break; 4196 4197 case ZFS_SMB_ACL_PURGE: 4198 error = zfs_smb_acl_purge(sharedir); 4199 break; 4200 4201 default: 4202 error = EINVAL; 4203 break; 4204 } 4205 4206 VN_RELE(vp); 4207 VN_RELE(ZTOV(sharedir)); 4208 4209 ZFS_EXIT(zfsvfs); 4210 4211 return (error); 4212 } 4213 4214 /* 4215 * inputs: 4216 * zc_name name of filesystem 4217 * zc_value short name of snap 4218 * zc_string user-supplied tag for this reference 4219 * zc_cookie recursive flag 4220 * zc_temphold set if hold is temporary 4221 * 4222 * outputs: none 4223 */ 4224 static int 4225 zfs_ioc_hold(zfs_cmd_t *zc) 4226 { 4227 boolean_t recursive = zc->zc_cookie; 4228 4229 if (snapshot_namecheck(zc->zc_value, NULL, NULL) != 0) 4230 return (EINVAL); 4231 4232 return (dsl_dataset_user_hold(zc->zc_name, zc->zc_value, 4233 zc->zc_string, recursive, zc->zc_temphold)); 4234 } 4235 4236 /* 4237 * inputs: 4238 * zc_name name of dataset from which we're releasing a user reference 4239 * zc_value short name of snap 4240 * zc_string user-supplied tag for this reference 4241 * zc_cookie recursive flag 4242 * 4243 * outputs: none 4244 */ 4245 static int 4246 zfs_ioc_release(zfs_cmd_t *zc) 4247 { 4248 boolean_t recursive = zc->zc_cookie; 4249 4250 if (snapshot_namecheck(zc->zc_value, NULL, NULL) != 0) 4251 return (EINVAL); 4252 4253 return (dsl_dataset_user_release(zc->zc_name, zc->zc_value, 4254 zc->zc_string, recursive)); 4255 } 4256 4257 /* 4258 * inputs: 4259 * zc_name name of filesystem 4260 * 4261 * outputs: 4262 * zc_nvlist_src{_size} nvlist of snapshot holds 4263 */ 4264 static int 4265 zfs_ioc_get_holds(zfs_cmd_t *zc) 4266 { 4267 nvlist_t *nvp; 4268 int error; 4269 4270 if ((error = dsl_dataset_get_holds(zc->zc_name, &nvp)) == 0) { 4271 error = put_nvlist(zc, nvp); 4272 nvlist_free(nvp); 4273 } 4274 4275 return (error); 4276 } 4277 4278 /* 4279 * pool create, destroy, and export don't log the history as part of 4280 * zfsdev_ioctl, but rather zfs_ioc_pool_create, and zfs_ioc_pool_export 4281 * do the logging of those commands. 4282 */ 4283 static zfs_ioc_vec_t zfs_ioc_vec[] = { 4284 { zfs_ioc_pool_create, zfs_secpolicy_config, POOL_NAME, B_FALSE, 4285 B_FALSE }, 4286 { zfs_ioc_pool_destroy, zfs_secpolicy_config, POOL_NAME, B_FALSE, 4287 B_FALSE }, 4288 { zfs_ioc_pool_import, zfs_secpolicy_config, POOL_NAME, B_TRUE, 4289 B_FALSE }, 4290 { zfs_ioc_pool_export, zfs_secpolicy_config, POOL_NAME, B_FALSE, 4291 B_FALSE }, 4292 { zfs_ioc_pool_configs, zfs_secpolicy_none, NO_NAME, B_FALSE, 4293 B_FALSE }, 4294 { zfs_ioc_pool_stats, zfs_secpolicy_read, POOL_NAME, B_FALSE, 4295 B_FALSE }, 4296 { zfs_ioc_pool_tryimport, zfs_secpolicy_config, NO_NAME, B_FALSE, 4297 B_FALSE }, 4298 { zfs_ioc_pool_scrub, zfs_secpolicy_config, POOL_NAME, B_TRUE, 4299 B_TRUE }, 4300 { zfs_ioc_pool_freeze, zfs_secpolicy_config, NO_NAME, B_FALSE, 4301 B_FALSE }, 4302 { zfs_ioc_pool_upgrade, zfs_secpolicy_config, POOL_NAME, B_TRUE, 4303 B_TRUE }, 4304 { zfs_ioc_pool_get_history, zfs_secpolicy_config, POOL_NAME, B_FALSE, 4305 B_FALSE }, 4306 { zfs_ioc_vdev_add, zfs_secpolicy_config, POOL_NAME, B_TRUE, 4307 B_TRUE }, 4308 { zfs_ioc_vdev_remove, zfs_secpolicy_config, POOL_NAME, B_TRUE, 4309 B_TRUE }, 4310 { zfs_ioc_vdev_set_state, zfs_secpolicy_config, POOL_NAME, B_TRUE, 4311 B_FALSE }, 4312 { zfs_ioc_vdev_attach, zfs_secpolicy_config, POOL_NAME, B_TRUE, 4313 B_TRUE }, 4314 { zfs_ioc_vdev_detach, zfs_secpolicy_config, POOL_NAME, B_TRUE, 4315 B_TRUE }, 4316 { zfs_ioc_vdev_setpath, zfs_secpolicy_config, POOL_NAME, B_FALSE, 4317 B_TRUE }, 4318 { zfs_ioc_vdev_setfru, zfs_secpolicy_config, POOL_NAME, B_FALSE, 4319 B_TRUE }, 4320 { zfs_ioc_objset_stats, zfs_secpolicy_read, DATASET_NAME, B_FALSE, 4321 B_TRUE }, 4322 { zfs_ioc_objset_zplprops, zfs_secpolicy_read, DATASET_NAME, B_FALSE, 4323 B_FALSE }, 4324 { zfs_ioc_dataset_list_next, zfs_secpolicy_read, DATASET_NAME, B_FALSE, 4325 B_TRUE }, 4326 { zfs_ioc_snapshot_list_next, zfs_secpolicy_read, DATASET_NAME, B_FALSE, 4327 B_TRUE }, 4328 { zfs_ioc_set_prop, zfs_secpolicy_none, DATASET_NAME, B_TRUE, B_TRUE }, 4329 { zfs_ioc_create, zfs_secpolicy_create, DATASET_NAME, B_TRUE, B_TRUE }, 4330 { zfs_ioc_destroy, zfs_secpolicy_destroy, DATASET_NAME, B_TRUE, 4331 B_TRUE}, 4332 { zfs_ioc_rollback, zfs_secpolicy_rollback, DATASET_NAME, B_TRUE, 4333 B_TRUE }, 4334 { zfs_ioc_rename, zfs_secpolicy_rename, DATASET_NAME, B_TRUE, B_TRUE }, 4335 { zfs_ioc_recv, zfs_secpolicy_receive, DATASET_NAME, B_TRUE, B_TRUE }, 4336 { zfs_ioc_send, zfs_secpolicy_send, DATASET_NAME, B_TRUE, B_FALSE }, 4337 { zfs_ioc_inject_fault, zfs_secpolicy_inject, NO_NAME, B_FALSE, 4338 B_FALSE }, 4339 { zfs_ioc_clear_fault, zfs_secpolicy_inject, NO_NAME, B_FALSE, 4340 B_FALSE }, 4341 { zfs_ioc_inject_list_next, zfs_secpolicy_inject, NO_NAME, B_FALSE, 4342 B_FALSE }, 4343 { zfs_ioc_error_log, zfs_secpolicy_inject, POOL_NAME, B_FALSE, 4344 B_FALSE }, 4345 { zfs_ioc_clear, zfs_secpolicy_config, POOL_NAME, B_TRUE, B_FALSE }, 4346 { zfs_ioc_promote, zfs_secpolicy_promote, DATASET_NAME, B_TRUE, 4347 B_TRUE }, 4348 { zfs_ioc_destroy_snaps, zfs_secpolicy_destroy_snaps, DATASET_NAME, 4349 B_TRUE, B_TRUE }, 4350 { zfs_ioc_snapshot, zfs_secpolicy_snapshot, DATASET_NAME, B_TRUE, 4351 B_TRUE }, 4352 { zfs_ioc_dsobj_to_dsname, zfs_secpolicy_config, POOL_NAME, B_FALSE, 4353 B_FALSE }, 4354 { zfs_ioc_obj_to_path, zfs_secpolicy_config, DATASET_NAME, B_FALSE, 4355 B_TRUE }, 4356 { zfs_ioc_pool_set_props, zfs_secpolicy_config, POOL_NAME, B_TRUE, 4357 B_TRUE }, 4358 { zfs_ioc_pool_get_props, zfs_secpolicy_read, POOL_NAME, B_FALSE, 4359 B_FALSE }, 4360 { zfs_ioc_set_fsacl, zfs_secpolicy_fsacl, DATASET_NAME, B_TRUE, 4361 B_TRUE }, 4362 { zfs_ioc_get_fsacl, zfs_secpolicy_read, DATASET_NAME, B_FALSE, 4363 B_FALSE }, 4364 { zfs_ioc_iscsi_perm_check, zfs_secpolicy_iscsi, DATASET_NAME, B_FALSE, 4365 B_FALSE }, 4366 { zfs_ioc_share, zfs_secpolicy_share, DATASET_NAME, B_FALSE, B_FALSE }, 4367 { zfs_ioc_inherit_prop, zfs_secpolicy_inherit, DATASET_NAME, B_TRUE, 4368 B_TRUE }, 4369 { zfs_ioc_smb_acl, zfs_secpolicy_smb_acl, DATASET_NAME, B_FALSE, 4370 B_FALSE }, 4371 { zfs_ioc_userspace_one, zfs_secpolicy_userspace_one, 4372 DATASET_NAME, B_FALSE, B_FALSE }, 4373 { zfs_ioc_userspace_many, zfs_secpolicy_userspace_many, 4374 DATASET_NAME, B_FALSE, B_FALSE }, 4375 { zfs_ioc_userspace_upgrade, zfs_secpolicy_userspace_upgrade, 4376 DATASET_NAME, B_FALSE, B_TRUE }, 4377 { zfs_ioc_hold, zfs_secpolicy_hold, DATASET_NAME, B_TRUE, B_TRUE }, 4378 { zfs_ioc_release, zfs_secpolicy_release, DATASET_NAME, B_TRUE, 4379 B_TRUE }, 4380 { zfs_ioc_get_holds, zfs_secpolicy_read, DATASET_NAME, B_FALSE, 4381 B_TRUE }, 4382 { zfs_ioc_objset_recvd_props, zfs_secpolicy_read, DATASET_NAME, B_FALSE, 4383 B_FALSE }, 4384 { zfs_ioc_vdev_split, zfs_secpolicy_config, POOL_NAME, B_TRUE, 4385 B_TRUE } 4386 }; 4387 4388 int 4389 pool_status_check(const char *name, zfs_ioc_namecheck_t type) 4390 { 4391 spa_t *spa; 4392 int error; 4393 4394 ASSERT(type == POOL_NAME || type == DATASET_NAME); 4395 4396 error = spa_open(name, &spa, FTAG); 4397 if (error == 0) { 4398 if (spa_suspended(spa)) 4399 error = EAGAIN; 4400 spa_close(spa, FTAG); 4401 } 4402 return (error); 4403 } 4404 4405 static int 4406 zfsdev_ioctl(dev_t dev, int cmd, intptr_t arg, int flag, cred_t *cr, int *rvalp) 4407 { 4408 zfs_cmd_t *zc; 4409 uint_t vec; 4410 int error, rc; 4411 4412 if (getminor(dev) != 0) 4413 return (zvol_ioctl(dev, cmd, arg, flag, cr, rvalp)); 4414 4415 vec = cmd - ZFS_IOC; 4416 ASSERT3U(getmajor(dev), ==, ddi_driver_major(zfs_dip)); 4417 4418 if (vec >= sizeof (zfs_ioc_vec) / sizeof (zfs_ioc_vec[0])) 4419 return (EINVAL); 4420 4421 zc = kmem_zalloc(sizeof (zfs_cmd_t), KM_SLEEP); 4422 4423 error = ddi_copyin((void *)arg, zc, sizeof (zfs_cmd_t), flag); 4424 if (error != 0) 4425 error = EFAULT; 4426 4427 if ((error == 0) && !(flag & FKIOCTL)) 4428 error = zfs_ioc_vec[vec].zvec_secpolicy(zc, cr); 4429 4430 /* 4431 * Ensure that all pool/dataset names are valid before we pass down to 4432 * the lower layers. 4433 */ 4434 if (error == 0) { 4435 zc->zc_name[sizeof (zc->zc_name) - 1] = '\0'; 4436 zc->zc_iflags = flag & FKIOCTL; 4437 switch (zfs_ioc_vec[vec].zvec_namecheck) { 4438 case POOL_NAME: 4439 if (pool_namecheck(zc->zc_name, NULL, NULL) != 0) 4440 error = EINVAL; 4441 if (zfs_ioc_vec[vec].zvec_pool_check) 4442 error = pool_status_check(zc->zc_name, 4443 zfs_ioc_vec[vec].zvec_namecheck); 4444 break; 4445 4446 case DATASET_NAME: 4447 if (dataset_namecheck(zc->zc_name, NULL, NULL) != 0) 4448 error = EINVAL; 4449 if (zfs_ioc_vec[vec].zvec_pool_check) 4450 error = pool_status_check(zc->zc_name, 4451 zfs_ioc_vec[vec].zvec_namecheck); 4452 break; 4453 4454 case NO_NAME: 4455 break; 4456 } 4457 } 4458 4459 if (error == 0) 4460 error = zfs_ioc_vec[vec].zvec_func(zc); 4461 4462 rc = ddi_copyout(zc, (void *)arg, sizeof (zfs_cmd_t), flag); 4463 if (error == 0) { 4464 if (rc != 0) 4465 error = EFAULT; 4466 if (zfs_ioc_vec[vec].zvec_his_log) 4467 zfs_log_history(zc); 4468 } 4469 4470 kmem_free(zc, sizeof (zfs_cmd_t)); 4471 return (error); 4472 } 4473 4474 static int 4475 zfs_attach(dev_info_t *dip, ddi_attach_cmd_t cmd) 4476 { 4477 if (cmd != DDI_ATTACH) 4478 return (DDI_FAILURE); 4479 4480 if (ddi_create_minor_node(dip, "zfs", S_IFCHR, 0, 4481 DDI_PSEUDO, 0) == DDI_FAILURE) 4482 return (DDI_FAILURE); 4483 4484 zfs_dip = dip; 4485 4486 ddi_report_dev(dip); 4487 4488 return (DDI_SUCCESS); 4489 } 4490 4491 static int 4492 zfs_detach(dev_info_t *dip, ddi_detach_cmd_t cmd) 4493 { 4494 if (spa_busy() || zfs_busy() || zvol_busy()) 4495 return (DDI_FAILURE); 4496 4497 if (cmd != DDI_DETACH) 4498 return (DDI_FAILURE); 4499 4500 zfs_dip = NULL; 4501 4502 ddi_prop_remove_all(dip); 4503 ddi_remove_minor_node(dip, NULL); 4504 4505 return (DDI_SUCCESS); 4506 } 4507 4508 /*ARGSUSED*/ 4509 static int 4510 zfs_info(dev_info_t *dip, ddi_info_cmd_t infocmd, void *arg, void **result) 4511 { 4512 switch (infocmd) { 4513 case DDI_INFO_DEVT2DEVINFO: 4514 *result = zfs_dip; 4515 return (DDI_SUCCESS); 4516 4517 case DDI_INFO_DEVT2INSTANCE: 4518 *result = (void *)0; 4519 return (DDI_SUCCESS); 4520 } 4521 4522 return (DDI_FAILURE); 4523 } 4524 4525 /* 4526 * OK, so this is a little weird. 4527 * 4528 * /dev/zfs is the control node, i.e. minor 0. 4529 * /dev/zvol/[r]dsk/pool/dataset are the zvols, minor > 0. 4530 * 4531 * /dev/zfs has basically nothing to do except serve up ioctls, 4532 * so most of the standard driver entry points are in zvol.c. 4533 */ 4534 static struct cb_ops zfs_cb_ops = { 4535 zvol_open, /* open */ 4536 zvol_close, /* close */ 4537 zvol_strategy, /* strategy */ 4538 nodev, /* print */ 4539 zvol_dump, /* dump */ 4540 zvol_read, /* read */ 4541 zvol_write, /* write */ 4542 zfsdev_ioctl, /* ioctl */ 4543 nodev, /* devmap */ 4544 nodev, /* mmap */ 4545 nodev, /* segmap */ 4546 nochpoll, /* poll */ 4547 ddi_prop_op, /* prop_op */ 4548 NULL, /* streamtab */ 4549 D_NEW | D_MP | D_64BIT, /* Driver compatibility flag */ 4550 CB_REV, /* version */ 4551 nodev, /* async read */ 4552 nodev, /* async write */ 4553 }; 4554 4555 static struct dev_ops zfs_dev_ops = { 4556 DEVO_REV, /* version */ 4557 0, /* refcnt */ 4558 zfs_info, /* info */ 4559 nulldev, /* identify */ 4560 nulldev, /* probe */ 4561 zfs_attach, /* attach */ 4562 zfs_detach, /* detach */ 4563 nodev, /* reset */ 4564 &zfs_cb_ops, /* driver operations */ 4565 NULL, /* no bus operations */ 4566 NULL, /* power */ 4567 ddi_quiesce_not_needed, /* quiesce */ 4568 }; 4569 4570 static struct modldrv zfs_modldrv = { 4571 &mod_driverops, 4572 "ZFS storage pool", 4573 &zfs_dev_ops 4574 }; 4575 4576 static struct modlinkage modlinkage = { 4577 MODREV_1, 4578 (void *)&zfs_modlfs, 4579 (void *)&zfs_modldrv, 4580 NULL 4581 }; 4582 4583 4584 uint_t zfs_fsyncer_key; 4585 extern uint_t rrw_tsd_key; 4586 4587 int 4588 _init(void) 4589 { 4590 int error; 4591 4592 spa_init(FREAD | FWRITE); 4593 zfs_init(); 4594 zvol_init(); 4595 4596 if ((error = mod_install(&modlinkage)) != 0) { 4597 zvol_fini(); 4598 zfs_fini(); 4599 spa_fini(); 4600 return (error); 4601 } 4602 4603 tsd_create(&zfs_fsyncer_key, NULL); 4604 tsd_create(&rrw_tsd_key, NULL); 4605 4606 error = ldi_ident_from_mod(&modlinkage, &zfs_li); 4607 ASSERT(error == 0); 4608 mutex_init(&zfs_share_lock, NULL, MUTEX_DEFAULT, NULL); 4609 4610 return (0); 4611 } 4612 4613 int 4614 _fini(void) 4615 { 4616 int error; 4617 4618 if (spa_busy() || zfs_busy() || zvol_busy() || zio_injection_enabled) 4619 return (EBUSY); 4620 4621 if ((error = mod_remove(&modlinkage)) != 0) 4622 return (error); 4623 4624 zvol_fini(); 4625 zfs_fini(); 4626 spa_fini(); 4627 if (zfs_nfsshare_inited) 4628 (void) ddi_modclose(nfs_mod); 4629 if (zfs_smbshare_inited) 4630 (void) ddi_modclose(smbsrv_mod); 4631 if (zfs_nfsshare_inited || zfs_smbshare_inited) 4632 (void) ddi_modclose(sharefs_mod); 4633 4634 tsd_destroy(&zfs_fsyncer_key); 4635 ldi_ident_release(zfs_li); 4636 zfs_li = NULL; 4637 mutex_destroy(&zfs_share_lock); 4638 4639 return (error); 4640 } 4641 4642 int 4643 _info(struct modinfo *modinfop) 4644 { 4645 return (mod_info(&modlinkage, modinfop)); 4646 } 4647