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 (c) 2005, 2010, Oracle and/or its affiliates. All rights reserved. 23 */ 24 25 #include <sys/types.h> 26 #include <sys/param.h> 27 #include <sys/errno.h> 28 #include <sys/uio.h> 29 #include <sys/buf.h> 30 #include <sys/modctl.h> 31 #include <sys/open.h> 32 #include <sys/file.h> 33 #include <sys/kmem.h> 34 #include <sys/conf.h> 35 #include <sys/cmn_err.h> 36 #include <sys/stat.h> 37 #include <sys/zfs_ioctl.h> 38 #include <sys/zfs_vfsops.h> 39 #include <sys/zfs_znode.h> 40 #include <sys/zap.h> 41 #include <sys/spa.h> 42 #include <sys/spa_impl.h> 43 #include <sys/vdev.h> 44 #include <sys/priv_impl.h> 45 #include <sys/dmu.h> 46 #include <sys/dsl_dir.h> 47 #include <sys/dsl_dataset.h> 48 #include <sys/dsl_prop.h> 49 #include <sys/dsl_deleg.h> 50 #include <sys/dmu_objset.h> 51 #include <sys/ddi.h> 52 #include <sys/sunddi.h> 53 #include <sys/sunldi.h> 54 #include <sys/policy.h> 55 #include <sys/zone.h> 56 #include <sys/nvpair.h> 57 #include <sys/pathname.h> 58 #include <sys/mount.h> 59 #include <sys/sdt.h> 60 #include <sys/fs/zfs.h> 61 #include <sys/zfs_ctldir.h> 62 #include <sys/zfs_dir.h> 63 #include <sys/zfs_onexit.h> 64 #include <sys/zvol.h> 65 #include <sys/dsl_scan.h> 66 #include <sharefs/share.h> 67 #include <sys/dmu_objset.h> 68 69 #include "zfs_namecheck.h" 70 #include "zfs_prop.h" 71 #include "zfs_deleg.h" 72 #include "zfs_comutil.h" 73 74 extern struct modlfs zfs_modlfs; 75 76 extern void zfs_init(void); 77 extern void zfs_fini(void); 78 79 ldi_ident_t zfs_li = NULL; 80 dev_info_t *zfs_dip; 81 82 typedef int zfs_ioc_func_t(zfs_cmd_t *); 83 typedef int zfs_secpolicy_func_t(zfs_cmd_t *, cred_t *); 84 85 typedef enum { 86 NO_NAME, 87 POOL_NAME, 88 DATASET_NAME 89 } zfs_ioc_namecheck_t; 90 91 typedef struct zfs_ioc_vec { 92 zfs_ioc_func_t *zvec_func; 93 zfs_secpolicy_func_t *zvec_secpolicy; 94 zfs_ioc_namecheck_t zvec_namecheck; 95 boolean_t zvec_his_log; 96 boolean_t zvec_pool_check; 97 } zfs_ioc_vec_t; 98 99 /* This array is indexed by zfs_userquota_prop_t */ 100 static const char *userquota_perms[] = { 101 ZFS_DELEG_PERM_USERUSED, 102 ZFS_DELEG_PERM_USERQUOTA, 103 ZFS_DELEG_PERM_GROUPUSED, 104 ZFS_DELEG_PERM_GROUPQUOTA, 105 }; 106 107 static int zfs_ioc_userspace_upgrade(zfs_cmd_t *zc); 108 static int zfs_check_settable(const char *name, nvpair_t *property, 109 cred_t *cr); 110 static int zfs_check_clearable(char *dataset, nvlist_t *props, 111 nvlist_t **errors); 112 static int zfs_fill_zplprops_root(uint64_t, nvlist_t *, nvlist_t *, 113 boolean_t *); 114 int zfs_set_prop_nvlist(const char *, zprop_source_t, nvlist_t *, nvlist_t **); 115 116 /* _NOTE(PRINTFLIKE(4)) - this is printf-like, but lint is too whiney */ 117 void 118 __dprintf(const char *file, const char *func, int line, const char *fmt, ...) 119 { 120 const char *newfile; 121 char buf[512]; 122 va_list adx; 123 124 /* 125 * Get rid of annoying "../common/" prefix to filename. 126 */ 127 newfile = strrchr(file, '/'); 128 if (newfile != NULL) { 129 newfile = newfile + 1; /* Get rid of leading / */ 130 } else { 131 newfile = file; 132 } 133 134 va_start(adx, fmt); 135 (void) vsnprintf(buf, sizeof (buf), fmt, adx); 136 va_end(adx); 137 138 /* 139 * To get this data, use the zfs-dprintf probe as so: 140 * dtrace -q -n 'zfs-dprintf \ 141 * /stringof(arg0) == "dbuf.c"/ \ 142 * {printf("%s: %s", stringof(arg1), stringof(arg3))}' 143 * arg0 = file name 144 * arg1 = function name 145 * arg2 = line number 146 * arg3 = message 147 */ 148 DTRACE_PROBE4(zfs__dprintf, 149 char *, newfile, char *, func, int, line, char *, buf); 150 } 151 152 static void 153 history_str_free(char *buf) 154 { 155 kmem_free(buf, HIS_MAX_RECORD_LEN); 156 } 157 158 static char * 159 history_str_get(zfs_cmd_t *zc) 160 { 161 char *buf; 162 163 if (zc->zc_history == NULL) 164 return (NULL); 165 166 buf = kmem_alloc(HIS_MAX_RECORD_LEN, KM_SLEEP); 167 if (copyinstr((void *)(uintptr_t)zc->zc_history, 168 buf, HIS_MAX_RECORD_LEN, NULL) != 0) { 169 history_str_free(buf); 170 return (NULL); 171 } 172 173 buf[HIS_MAX_RECORD_LEN -1] = '\0'; 174 175 return (buf); 176 } 177 178 /* 179 * Check to see if the named dataset is currently defined as bootable 180 */ 181 static boolean_t 182 zfs_is_bootfs(const char *name) 183 { 184 objset_t *os; 185 186 if (dmu_objset_hold(name, FTAG, &os) == 0) { 187 boolean_t ret; 188 ret = (dmu_objset_id(os) == spa_bootfs(dmu_objset_spa(os))); 189 dmu_objset_rele(os, FTAG); 190 return (ret); 191 } 192 return (B_FALSE); 193 } 194 195 /* 196 * zfs_earlier_version 197 * 198 * Return non-zero if the spa version is less than requested version. 199 */ 200 static int 201 zfs_earlier_version(const char *name, int version) 202 { 203 spa_t *spa; 204 205 if (spa_open(name, &spa, FTAG) == 0) { 206 if (spa_version(spa) < version) { 207 spa_close(spa, FTAG); 208 return (1); 209 } 210 spa_close(spa, FTAG); 211 } 212 return (0); 213 } 214 215 /* 216 * zpl_earlier_version 217 * 218 * Return TRUE if the ZPL version is less than requested version. 219 */ 220 static boolean_t 221 zpl_earlier_version(const char *name, int version) 222 { 223 objset_t *os; 224 boolean_t rc = B_TRUE; 225 226 if (dmu_objset_hold(name, FTAG, &os) == 0) { 227 uint64_t zplversion; 228 229 if (dmu_objset_type(os) != DMU_OST_ZFS) { 230 dmu_objset_rele(os, FTAG); 231 return (B_TRUE); 232 } 233 /* XXX reading from non-owned objset */ 234 if (zfs_get_zplprop(os, ZFS_PROP_VERSION, &zplversion) == 0) 235 rc = zplversion < version; 236 dmu_objset_rele(os, FTAG); 237 } 238 return (rc); 239 } 240 241 static void 242 zfs_log_history(zfs_cmd_t *zc) 243 { 244 spa_t *spa; 245 char *buf; 246 247 if ((buf = history_str_get(zc)) == NULL) 248 return; 249 250 if (spa_open(zc->zc_name, &spa, FTAG) == 0) { 251 if (spa_version(spa) >= SPA_VERSION_ZPOOL_HISTORY) 252 (void) spa_history_log(spa, buf, LOG_CMD_NORMAL); 253 spa_close(spa, FTAG); 254 } 255 history_str_free(buf); 256 } 257 258 /* 259 * Policy for top-level read operations (list pools). Requires no privileges, 260 * and can be used in the local zone, as there is no associated dataset. 261 */ 262 /* ARGSUSED */ 263 static int 264 zfs_secpolicy_none(zfs_cmd_t *zc, cred_t *cr) 265 { 266 return (0); 267 } 268 269 /* 270 * Policy for dataset read operations (list children, get statistics). Requires 271 * no privileges, but must be visible in the local zone. 272 */ 273 /* ARGSUSED */ 274 static int 275 zfs_secpolicy_read(zfs_cmd_t *zc, cred_t *cr) 276 { 277 if (INGLOBALZONE(curproc) || 278 zone_dataset_visible(zc->zc_name, NULL)) 279 return (0); 280 281 return (ENOENT); 282 } 283 284 static int 285 zfs_dozonecheck(const char *dataset, cred_t *cr) 286 { 287 uint64_t zoned; 288 int writable = 1; 289 290 /* 291 * The dataset must be visible by this zone -- check this first 292 * so they don't see EPERM on something they shouldn't know about. 293 */ 294 if (!INGLOBALZONE(curproc) && 295 !zone_dataset_visible(dataset, &writable)) 296 return (ENOENT); 297 298 if (dsl_prop_get_integer(dataset, "zoned", &zoned, NULL)) 299 return (ENOENT); 300 301 if (INGLOBALZONE(curproc)) { 302 /* 303 * If the fs is zoned, only root can access it from the 304 * global zone. 305 */ 306 if (secpolicy_zfs(cr) && zoned) 307 return (EPERM); 308 } else { 309 /* 310 * If we are in a local zone, the 'zoned' property must be set. 311 */ 312 if (!zoned) 313 return (EPERM); 314 315 /* must be writable by this zone */ 316 if (!writable) 317 return (EPERM); 318 } 319 return (0); 320 } 321 322 int 323 zfs_secpolicy_write_perms(const char *name, const char *perm, cred_t *cr) 324 { 325 int error; 326 327 error = zfs_dozonecheck(name, cr); 328 if (error == 0) { 329 error = secpolicy_zfs(cr); 330 if (error) 331 error = dsl_deleg_access(name, perm, cr); 332 } 333 return (error); 334 } 335 336 /* 337 * Policy for setting the security label property. 338 * 339 * Returns 0 for success, non-zero for access and other errors. 340 */ 341 static int 342 zfs_set_slabel_policy(const char *name, char *strval, cred_t *cr) 343 { 344 char ds_hexsl[MAXNAMELEN]; 345 bslabel_t ds_sl, new_sl; 346 boolean_t new_default = FALSE; 347 uint64_t zoned; 348 int needed_priv = -1; 349 int error; 350 351 /* First get the existing dataset label. */ 352 error = dsl_prop_get(name, zfs_prop_to_name(ZFS_PROP_MLSLABEL), 353 1, sizeof (ds_hexsl), &ds_hexsl, NULL); 354 if (error) 355 return (EPERM); 356 357 if (strcasecmp(strval, ZFS_MLSLABEL_DEFAULT) == 0) 358 new_default = TRUE; 359 360 /* The label must be translatable */ 361 if (!new_default && (hexstr_to_label(strval, &new_sl) != 0)) 362 return (EINVAL); 363 364 /* 365 * In a non-global zone, disallow attempts to set a label that 366 * doesn't match that of the zone; otherwise no other checks 367 * are needed. 368 */ 369 if (!INGLOBALZONE(curproc)) { 370 if (new_default || !blequal(&new_sl, CR_SL(CRED()))) 371 return (EPERM); 372 return (0); 373 } 374 375 /* 376 * For global-zone datasets (i.e., those whose zoned property is 377 * "off", verify that the specified new label is valid for the 378 * global zone. 379 */ 380 if (dsl_prop_get_integer(name, 381 zfs_prop_to_name(ZFS_PROP_ZONED), &zoned, NULL)) 382 return (EPERM); 383 if (!zoned) { 384 if (zfs_check_global_label(name, strval) != 0) 385 return (EPERM); 386 } 387 388 /* 389 * If the existing dataset label is nondefault, check if the 390 * dataset is mounted (label cannot be changed while mounted). 391 * Get the zfsvfs; if there isn't one, then the dataset isn't 392 * mounted (or isn't a dataset, doesn't exist, ...). 393 */ 394 if (strcasecmp(ds_hexsl, ZFS_MLSLABEL_DEFAULT) != 0) { 395 objset_t *os; 396 static char *setsl_tag = "setsl_tag"; 397 398 /* 399 * Try to own the dataset; abort if there is any error, 400 * (e.g., already mounted, in use, or other error). 401 */ 402 error = dmu_objset_own(name, DMU_OST_ZFS, B_TRUE, 403 setsl_tag, &os); 404 if (error) 405 return (EPERM); 406 407 dmu_objset_disown(os, setsl_tag); 408 409 if (new_default) { 410 needed_priv = PRIV_FILE_DOWNGRADE_SL; 411 goto out_check; 412 } 413 414 if (hexstr_to_label(strval, &new_sl) != 0) 415 return (EPERM); 416 417 if (blstrictdom(&ds_sl, &new_sl)) 418 needed_priv = PRIV_FILE_DOWNGRADE_SL; 419 else if (blstrictdom(&new_sl, &ds_sl)) 420 needed_priv = PRIV_FILE_UPGRADE_SL; 421 } else { 422 /* dataset currently has a default label */ 423 if (!new_default) 424 needed_priv = PRIV_FILE_UPGRADE_SL; 425 } 426 427 out_check: 428 if (needed_priv != -1) 429 return (PRIV_POLICY(cr, needed_priv, B_FALSE, EPERM, NULL)); 430 return (0); 431 } 432 433 static int 434 zfs_secpolicy_setprop(const char *dsname, zfs_prop_t prop, nvpair_t *propval, 435 cred_t *cr) 436 { 437 char *strval; 438 439 /* 440 * Check permissions for special properties. 441 */ 442 switch (prop) { 443 case ZFS_PROP_ZONED: 444 /* 445 * Disallow setting of 'zoned' from within a local zone. 446 */ 447 if (!INGLOBALZONE(curproc)) 448 return (EPERM); 449 break; 450 451 case ZFS_PROP_QUOTA: 452 if (!INGLOBALZONE(curproc)) { 453 uint64_t zoned; 454 char setpoint[MAXNAMELEN]; 455 /* 456 * Unprivileged users are allowed to modify the 457 * quota on things *under* (ie. contained by) 458 * the thing they own. 459 */ 460 if (dsl_prop_get_integer(dsname, "zoned", &zoned, 461 setpoint)) 462 return (EPERM); 463 if (!zoned || strlen(dsname) <= strlen(setpoint)) 464 return (EPERM); 465 } 466 break; 467 468 case ZFS_PROP_MLSLABEL: 469 if (!is_system_labeled()) 470 return (EPERM); 471 472 if (nvpair_value_string(propval, &strval) == 0) { 473 int err; 474 475 err = zfs_set_slabel_policy(dsname, strval, CRED()); 476 if (err != 0) 477 return (err); 478 } 479 break; 480 } 481 482 return (zfs_secpolicy_write_perms(dsname, zfs_prop_to_name(prop), cr)); 483 } 484 485 int 486 zfs_secpolicy_fsacl(zfs_cmd_t *zc, cred_t *cr) 487 { 488 int error; 489 490 error = zfs_dozonecheck(zc->zc_name, cr); 491 if (error) 492 return (error); 493 494 /* 495 * permission to set permissions will be evaluated later in 496 * dsl_deleg_can_allow() 497 */ 498 return (0); 499 } 500 501 int 502 zfs_secpolicy_rollback(zfs_cmd_t *zc, cred_t *cr) 503 { 504 return (zfs_secpolicy_write_perms(zc->zc_name, 505 ZFS_DELEG_PERM_ROLLBACK, cr)); 506 } 507 508 int 509 zfs_secpolicy_send(zfs_cmd_t *zc, cred_t *cr) 510 { 511 return (zfs_secpolicy_write_perms(zc->zc_name, 512 ZFS_DELEG_PERM_SEND, cr)); 513 } 514 515 static int 516 zfs_secpolicy_deleg_share(zfs_cmd_t *zc, cred_t *cr) 517 { 518 vnode_t *vp; 519 int error; 520 521 if ((error = lookupname(zc->zc_value, UIO_SYSSPACE, 522 NO_FOLLOW, NULL, &vp)) != 0) 523 return (error); 524 525 /* Now make sure mntpnt and dataset are ZFS */ 526 527 if (vp->v_vfsp->vfs_fstype != zfsfstype || 528 (strcmp((char *)refstr_value(vp->v_vfsp->vfs_resource), 529 zc->zc_name) != 0)) { 530 VN_RELE(vp); 531 return (EPERM); 532 } 533 534 VN_RELE(vp); 535 return (dsl_deleg_access(zc->zc_name, 536 ZFS_DELEG_PERM_SHARE, cr)); 537 } 538 539 int 540 zfs_secpolicy_share(zfs_cmd_t *zc, cred_t *cr) 541 { 542 if (!INGLOBALZONE(curproc)) 543 return (EPERM); 544 545 if (secpolicy_nfs(cr) == 0) { 546 return (0); 547 } else { 548 return (zfs_secpolicy_deleg_share(zc, cr)); 549 } 550 } 551 552 int 553 zfs_secpolicy_smb_acl(zfs_cmd_t *zc, cred_t *cr) 554 { 555 if (!INGLOBALZONE(curproc)) 556 return (EPERM); 557 558 if (secpolicy_smb(cr) == 0) { 559 return (0); 560 } else { 561 return (zfs_secpolicy_deleg_share(zc, cr)); 562 } 563 } 564 565 static int 566 zfs_get_parent(const char *datasetname, char *parent, int parentsize) 567 { 568 char *cp; 569 570 /* 571 * Remove the @bla or /bla from the end of the name to get the parent. 572 */ 573 (void) strncpy(parent, datasetname, parentsize); 574 cp = strrchr(parent, '@'); 575 if (cp != NULL) { 576 cp[0] = '\0'; 577 } else { 578 cp = strrchr(parent, '/'); 579 if (cp == NULL) 580 return (ENOENT); 581 cp[0] = '\0'; 582 } 583 584 return (0); 585 } 586 587 int 588 zfs_secpolicy_destroy_perms(const char *name, cred_t *cr) 589 { 590 int error; 591 592 if ((error = zfs_secpolicy_write_perms(name, 593 ZFS_DELEG_PERM_MOUNT, cr)) != 0) 594 return (error); 595 596 return (zfs_secpolicy_write_perms(name, ZFS_DELEG_PERM_DESTROY, cr)); 597 } 598 599 static int 600 zfs_secpolicy_destroy(zfs_cmd_t *zc, cred_t *cr) 601 { 602 return (zfs_secpolicy_destroy_perms(zc->zc_name, cr)); 603 } 604 605 /* 606 * Destroying snapshots with delegated permissions requires 607 * descendent mount and destroy permissions. 608 * Reassemble the full filesystem@snap name so dsl_deleg_access() 609 * can do the correct permission check. 610 * 611 * Since this routine is used when doing a recursive destroy of snapshots 612 * and destroying snapshots requires descendent permissions, a successfull 613 * check of the top level snapshot applies to snapshots of all descendent 614 * datasets as well. 615 */ 616 static int 617 zfs_secpolicy_destroy_snaps(zfs_cmd_t *zc, cred_t *cr) 618 { 619 int error; 620 char *dsname; 621 622 dsname = kmem_asprintf("%s@%s", zc->zc_name, zc->zc_value); 623 624 error = zfs_secpolicy_destroy_perms(dsname, cr); 625 626 strfree(dsname); 627 return (error); 628 } 629 630 int 631 zfs_secpolicy_rename_perms(const char *from, const char *to, cred_t *cr) 632 { 633 char parentname[MAXNAMELEN]; 634 int error; 635 636 if ((error = zfs_secpolicy_write_perms(from, 637 ZFS_DELEG_PERM_RENAME, cr)) != 0) 638 return (error); 639 640 if ((error = zfs_secpolicy_write_perms(from, 641 ZFS_DELEG_PERM_MOUNT, cr)) != 0) 642 return (error); 643 644 if ((error = zfs_get_parent(to, parentname, 645 sizeof (parentname))) != 0) 646 return (error); 647 648 if ((error = zfs_secpolicy_write_perms(parentname, 649 ZFS_DELEG_PERM_CREATE, cr)) != 0) 650 return (error); 651 652 if ((error = zfs_secpolicy_write_perms(parentname, 653 ZFS_DELEG_PERM_MOUNT, cr)) != 0) 654 return (error); 655 656 return (error); 657 } 658 659 static int 660 zfs_secpolicy_rename(zfs_cmd_t *zc, cred_t *cr) 661 { 662 return (zfs_secpolicy_rename_perms(zc->zc_name, zc->zc_value, cr)); 663 } 664 665 static int 666 zfs_secpolicy_promote(zfs_cmd_t *zc, cred_t *cr) 667 { 668 char parentname[MAXNAMELEN]; 669 objset_t *clone; 670 int error; 671 672 error = zfs_secpolicy_write_perms(zc->zc_name, 673 ZFS_DELEG_PERM_PROMOTE, cr); 674 if (error) 675 return (error); 676 677 error = dmu_objset_hold(zc->zc_name, FTAG, &clone); 678 679 if (error == 0) { 680 dsl_dataset_t *pclone = NULL; 681 dsl_dir_t *dd; 682 dd = clone->os_dsl_dataset->ds_dir; 683 684 rw_enter(&dd->dd_pool->dp_config_rwlock, RW_READER); 685 error = dsl_dataset_hold_obj(dd->dd_pool, 686 dd->dd_phys->dd_origin_obj, FTAG, &pclone); 687 rw_exit(&dd->dd_pool->dp_config_rwlock); 688 if (error) { 689 dmu_objset_rele(clone, FTAG); 690 return (error); 691 } 692 693 error = zfs_secpolicy_write_perms(zc->zc_name, 694 ZFS_DELEG_PERM_MOUNT, cr); 695 696 dsl_dataset_name(pclone, parentname); 697 dmu_objset_rele(clone, FTAG); 698 dsl_dataset_rele(pclone, FTAG); 699 if (error == 0) 700 error = zfs_secpolicy_write_perms(parentname, 701 ZFS_DELEG_PERM_PROMOTE, cr); 702 } 703 return (error); 704 } 705 706 static int 707 zfs_secpolicy_receive(zfs_cmd_t *zc, cred_t *cr) 708 { 709 int error; 710 711 if ((error = zfs_secpolicy_write_perms(zc->zc_name, 712 ZFS_DELEG_PERM_RECEIVE, cr)) != 0) 713 return (error); 714 715 if ((error = zfs_secpolicy_write_perms(zc->zc_name, 716 ZFS_DELEG_PERM_MOUNT, cr)) != 0) 717 return (error); 718 719 return (zfs_secpolicy_write_perms(zc->zc_name, 720 ZFS_DELEG_PERM_CREATE, cr)); 721 } 722 723 int 724 zfs_secpolicy_snapshot_perms(const char *name, cred_t *cr) 725 { 726 return (zfs_secpolicy_write_perms(name, 727 ZFS_DELEG_PERM_SNAPSHOT, cr)); 728 } 729 730 static int 731 zfs_secpolicy_snapshot(zfs_cmd_t *zc, cred_t *cr) 732 { 733 734 return (zfs_secpolicy_snapshot_perms(zc->zc_name, cr)); 735 } 736 737 static int 738 zfs_secpolicy_create(zfs_cmd_t *zc, cred_t *cr) 739 { 740 char parentname[MAXNAMELEN]; 741 int error; 742 743 if ((error = zfs_get_parent(zc->zc_name, parentname, 744 sizeof (parentname))) != 0) 745 return (error); 746 747 if (zc->zc_value[0] != '\0') { 748 if ((error = zfs_secpolicy_write_perms(zc->zc_value, 749 ZFS_DELEG_PERM_CLONE, cr)) != 0) 750 return (error); 751 } 752 753 if ((error = zfs_secpolicy_write_perms(parentname, 754 ZFS_DELEG_PERM_CREATE, cr)) != 0) 755 return (error); 756 757 error = zfs_secpolicy_write_perms(parentname, 758 ZFS_DELEG_PERM_MOUNT, cr); 759 760 return (error); 761 } 762 763 static int 764 zfs_secpolicy_umount(zfs_cmd_t *zc, cred_t *cr) 765 { 766 int error; 767 768 error = secpolicy_fs_unmount(cr, NULL); 769 if (error) { 770 error = dsl_deleg_access(zc->zc_name, ZFS_DELEG_PERM_MOUNT, cr); 771 } 772 return (error); 773 } 774 775 /* 776 * Policy for pool operations - create/destroy pools, add vdevs, etc. Requires 777 * SYS_CONFIG privilege, which is not available in a local zone. 778 */ 779 /* ARGSUSED */ 780 static int 781 zfs_secpolicy_config(zfs_cmd_t *zc, cred_t *cr) 782 { 783 if (secpolicy_sys_config(cr, B_FALSE) != 0) 784 return (EPERM); 785 786 return (0); 787 } 788 789 /* 790 * Policy for fault injection. Requires all privileges. 791 */ 792 /* ARGSUSED */ 793 static int 794 zfs_secpolicy_inject(zfs_cmd_t *zc, cred_t *cr) 795 { 796 return (secpolicy_zinject(cr)); 797 } 798 799 static int 800 zfs_secpolicy_inherit(zfs_cmd_t *zc, cred_t *cr) 801 { 802 zfs_prop_t prop = zfs_name_to_prop(zc->zc_value); 803 804 if (prop == ZPROP_INVAL) { 805 if (!zfs_prop_user(zc->zc_value)) 806 return (EINVAL); 807 return (zfs_secpolicy_write_perms(zc->zc_name, 808 ZFS_DELEG_PERM_USERPROP, cr)); 809 } else { 810 return (zfs_secpolicy_setprop(zc->zc_name, prop, 811 NULL, cr)); 812 } 813 } 814 815 static int 816 zfs_secpolicy_userspace_one(zfs_cmd_t *zc, cred_t *cr) 817 { 818 int err = zfs_secpolicy_read(zc, cr); 819 if (err) 820 return (err); 821 822 if (zc->zc_objset_type >= ZFS_NUM_USERQUOTA_PROPS) 823 return (EINVAL); 824 825 if (zc->zc_value[0] == 0) { 826 /* 827 * They are asking about a posix uid/gid. If it's 828 * themself, allow it. 829 */ 830 if (zc->zc_objset_type == ZFS_PROP_USERUSED || 831 zc->zc_objset_type == ZFS_PROP_USERQUOTA) { 832 if (zc->zc_guid == crgetuid(cr)) 833 return (0); 834 } else { 835 if (groupmember(zc->zc_guid, cr)) 836 return (0); 837 } 838 } 839 840 return (zfs_secpolicy_write_perms(zc->zc_name, 841 userquota_perms[zc->zc_objset_type], cr)); 842 } 843 844 static int 845 zfs_secpolicy_userspace_many(zfs_cmd_t *zc, cred_t *cr) 846 { 847 int err = zfs_secpolicy_read(zc, cr); 848 if (err) 849 return (err); 850 851 if (zc->zc_objset_type >= ZFS_NUM_USERQUOTA_PROPS) 852 return (EINVAL); 853 854 return (zfs_secpolicy_write_perms(zc->zc_name, 855 userquota_perms[zc->zc_objset_type], cr)); 856 } 857 858 static int 859 zfs_secpolicy_userspace_upgrade(zfs_cmd_t *zc, cred_t *cr) 860 { 861 return (zfs_secpolicy_setprop(zc->zc_name, ZFS_PROP_VERSION, 862 NULL, cr)); 863 } 864 865 static int 866 zfs_secpolicy_hold(zfs_cmd_t *zc, cred_t *cr) 867 { 868 return (zfs_secpolicy_write_perms(zc->zc_name, 869 ZFS_DELEG_PERM_HOLD, cr)); 870 } 871 872 static int 873 zfs_secpolicy_release(zfs_cmd_t *zc, cred_t *cr) 874 { 875 return (zfs_secpolicy_write_perms(zc->zc_name, 876 ZFS_DELEG_PERM_RELEASE, cr)); 877 } 878 879 /* 880 * Returns the nvlist as specified by the user in the zfs_cmd_t. 881 */ 882 static int 883 get_nvlist(uint64_t nvl, uint64_t size, int iflag, nvlist_t **nvp) 884 { 885 char *packed; 886 int error; 887 nvlist_t *list = NULL; 888 889 /* 890 * Read in and unpack the user-supplied nvlist. 891 */ 892 if (size == 0) 893 return (EINVAL); 894 895 packed = kmem_alloc(size, KM_SLEEP); 896 897 if ((error = ddi_copyin((void *)(uintptr_t)nvl, packed, size, 898 iflag)) != 0) { 899 kmem_free(packed, size); 900 return (error); 901 } 902 903 if ((error = nvlist_unpack(packed, size, &list, 0)) != 0) { 904 kmem_free(packed, size); 905 return (error); 906 } 907 908 kmem_free(packed, size); 909 910 *nvp = list; 911 return (0); 912 } 913 914 static int 915 fit_error_list(zfs_cmd_t *zc, nvlist_t **errors) 916 { 917 size_t size; 918 919 VERIFY(nvlist_size(*errors, &size, NV_ENCODE_NATIVE) == 0); 920 921 if (size > zc->zc_nvlist_dst_size) { 922 nvpair_t *more_errors; 923 int n = 0; 924 925 if (zc->zc_nvlist_dst_size < 1024) 926 return (ENOMEM); 927 928 VERIFY(nvlist_add_int32(*errors, ZPROP_N_MORE_ERRORS, 0) == 0); 929 more_errors = nvlist_prev_nvpair(*errors, NULL); 930 931 do { 932 nvpair_t *pair = nvlist_prev_nvpair(*errors, 933 more_errors); 934 VERIFY(nvlist_remove_nvpair(*errors, pair) == 0); 935 n++; 936 VERIFY(nvlist_size(*errors, &size, 937 NV_ENCODE_NATIVE) == 0); 938 } while (size > zc->zc_nvlist_dst_size); 939 940 VERIFY(nvlist_remove_nvpair(*errors, more_errors) == 0); 941 VERIFY(nvlist_add_int32(*errors, ZPROP_N_MORE_ERRORS, n) == 0); 942 ASSERT(nvlist_size(*errors, &size, NV_ENCODE_NATIVE) == 0); 943 ASSERT(size <= zc->zc_nvlist_dst_size); 944 } 945 946 return (0); 947 } 948 949 static int 950 put_nvlist(zfs_cmd_t *zc, nvlist_t *nvl) 951 { 952 char *packed = NULL; 953 int error = 0; 954 size_t size; 955 956 VERIFY(nvlist_size(nvl, &size, NV_ENCODE_NATIVE) == 0); 957 958 if (size > zc->zc_nvlist_dst_size) { 959 error = ENOMEM; 960 } else { 961 packed = kmem_alloc(size, KM_SLEEP); 962 VERIFY(nvlist_pack(nvl, &packed, &size, NV_ENCODE_NATIVE, 963 KM_SLEEP) == 0); 964 if (ddi_copyout(packed, (void *)(uintptr_t)zc->zc_nvlist_dst, 965 size, zc->zc_iflags) != 0) 966 error = EFAULT; 967 kmem_free(packed, size); 968 } 969 970 zc->zc_nvlist_dst_size = size; 971 return (error); 972 } 973 974 static int 975 getzfsvfs(const char *dsname, zfsvfs_t **zfvp) 976 { 977 objset_t *os; 978 int error; 979 980 error = dmu_objset_hold(dsname, FTAG, &os); 981 if (error) 982 return (error); 983 if (dmu_objset_type(os) != DMU_OST_ZFS) { 984 dmu_objset_rele(os, FTAG); 985 return (EINVAL); 986 } 987 988 mutex_enter(&os->os_user_ptr_lock); 989 *zfvp = dmu_objset_get_user(os); 990 if (*zfvp) { 991 VFS_HOLD((*zfvp)->z_vfs); 992 } else { 993 error = ESRCH; 994 } 995 mutex_exit(&os->os_user_ptr_lock); 996 dmu_objset_rele(os, FTAG); 997 return (error); 998 } 999 1000 /* 1001 * Find a zfsvfs_t for a mounted filesystem, or create our own, in which 1002 * case its z_vfs will be NULL, and it will be opened as the owner. 1003 */ 1004 static int 1005 zfsvfs_hold(const char *name, void *tag, zfsvfs_t **zfvp) 1006 { 1007 int error = 0; 1008 1009 if (getzfsvfs(name, zfvp) != 0) 1010 error = zfsvfs_create(name, zfvp); 1011 if (error == 0) { 1012 rrw_enter(&(*zfvp)->z_teardown_lock, RW_READER, tag); 1013 if ((*zfvp)->z_unmounted) { 1014 /* 1015 * XXX we could probably try again, since the unmounting 1016 * thread should be just about to disassociate the 1017 * objset from the zfsvfs. 1018 */ 1019 rrw_exit(&(*zfvp)->z_teardown_lock, tag); 1020 return (EBUSY); 1021 } 1022 } 1023 return (error); 1024 } 1025 1026 static void 1027 zfsvfs_rele(zfsvfs_t *zfsvfs, void *tag) 1028 { 1029 rrw_exit(&zfsvfs->z_teardown_lock, tag); 1030 1031 if (zfsvfs->z_vfs) { 1032 VFS_RELE(zfsvfs->z_vfs); 1033 } else { 1034 dmu_objset_disown(zfsvfs->z_os, zfsvfs); 1035 zfsvfs_free(zfsvfs); 1036 } 1037 } 1038 1039 static int 1040 zfs_ioc_pool_create(zfs_cmd_t *zc) 1041 { 1042 int error; 1043 nvlist_t *config, *props = NULL; 1044 nvlist_t *rootprops = NULL; 1045 nvlist_t *zplprops = NULL; 1046 char *buf; 1047 1048 if (error = get_nvlist(zc->zc_nvlist_conf, zc->zc_nvlist_conf_size, 1049 zc->zc_iflags, &config)) 1050 return (error); 1051 1052 if (zc->zc_nvlist_src_size != 0 && (error = 1053 get_nvlist(zc->zc_nvlist_src, zc->zc_nvlist_src_size, 1054 zc->zc_iflags, &props))) { 1055 nvlist_free(config); 1056 return (error); 1057 } 1058 1059 if (props) { 1060 nvlist_t *nvl = NULL; 1061 uint64_t version = SPA_VERSION; 1062 1063 (void) nvlist_lookup_uint64(props, 1064 zpool_prop_to_name(ZPOOL_PROP_VERSION), &version); 1065 if (version < SPA_VERSION_INITIAL || version > SPA_VERSION) { 1066 error = EINVAL; 1067 goto pool_props_bad; 1068 } 1069 (void) nvlist_lookup_nvlist(props, ZPOOL_ROOTFS_PROPS, &nvl); 1070 if (nvl) { 1071 error = nvlist_dup(nvl, &rootprops, KM_SLEEP); 1072 if (error != 0) { 1073 nvlist_free(config); 1074 nvlist_free(props); 1075 return (error); 1076 } 1077 (void) nvlist_remove_all(props, ZPOOL_ROOTFS_PROPS); 1078 } 1079 VERIFY(nvlist_alloc(&zplprops, NV_UNIQUE_NAME, KM_SLEEP) == 0); 1080 error = zfs_fill_zplprops_root(version, rootprops, 1081 zplprops, NULL); 1082 if (error) 1083 goto pool_props_bad; 1084 } 1085 1086 buf = history_str_get(zc); 1087 1088 error = spa_create(zc->zc_name, config, props, buf, zplprops); 1089 1090 /* 1091 * Set the remaining root properties 1092 */ 1093 if (!error && (error = zfs_set_prop_nvlist(zc->zc_name, 1094 ZPROP_SRC_LOCAL, rootprops, NULL)) != 0) 1095 (void) spa_destroy(zc->zc_name); 1096 1097 if (buf != NULL) 1098 history_str_free(buf); 1099 1100 pool_props_bad: 1101 nvlist_free(rootprops); 1102 nvlist_free(zplprops); 1103 nvlist_free(config); 1104 nvlist_free(props); 1105 1106 return (error); 1107 } 1108 1109 static int 1110 zfs_ioc_pool_destroy(zfs_cmd_t *zc) 1111 { 1112 int error; 1113 zfs_log_history(zc); 1114 error = spa_destroy(zc->zc_name); 1115 if (error == 0) 1116 zvol_remove_minors(zc->zc_name); 1117 return (error); 1118 } 1119 1120 static int 1121 zfs_ioc_pool_import(zfs_cmd_t *zc) 1122 { 1123 nvlist_t *config, *props = NULL; 1124 uint64_t guid; 1125 int error; 1126 1127 if ((error = get_nvlist(zc->zc_nvlist_conf, zc->zc_nvlist_conf_size, 1128 zc->zc_iflags, &config)) != 0) 1129 return (error); 1130 1131 if (zc->zc_nvlist_src_size != 0 && (error = 1132 get_nvlist(zc->zc_nvlist_src, zc->zc_nvlist_src_size, 1133 zc->zc_iflags, &props))) { 1134 nvlist_free(config); 1135 return (error); 1136 } 1137 1138 if (nvlist_lookup_uint64(config, ZPOOL_CONFIG_POOL_GUID, &guid) != 0 || 1139 guid != zc->zc_guid) 1140 error = EINVAL; 1141 else if (zc->zc_cookie) 1142 error = spa_import_verbatim(zc->zc_name, config, props); 1143 else 1144 error = spa_import(zc->zc_name, config, props); 1145 1146 if (zc->zc_nvlist_dst != 0) 1147 (void) put_nvlist(zc, config); 1148 1149 nvlist_free(config); 1150 1151 if (props) 1152 nvlist_free(props); 1153 1154 return (error); 1155 } 1156 1157 static int 1158 zfs_ioc_pool_export(zfs_cmd_t *zc) 1159 { 1160 int error; 1161 boolean_t force = (boolean_t)zc->zc_cookie; 1162 boolean_t hardforce = (boolean_t)zc->zc_guid; 1163 1164 zfs_log_history(zc); 1165 error = spa_export(zc->zc_name, NULL, force, hardforce); 1166 if (error == 0) 1167 zvol_remove_minors(zc->zc_name); 1168 return (error); 1169 } 1170 1171 static int 1172 zfs_ioc_pool_configs(zfs_cmd_t *zc) 1173 { 1174 nvlist_t *configs; 1175 int error; 1176 1177 if ((configs = spa_all_configs(&zc->zc_cookie)) == NULL) 1178 return (EEXIST); 1179 1180 error = put_nvlist(zc, configs); 1181 1182 nvlist_free(configs); 1183 1184 return (error); 1185 } 1186 1187 static int 1188 zfs_ioc_pool_stats(zfs_cmd_t *zc) 1189 { 1190 nvlist_t *config; 1191 int error; 1192 int ret = 0; 1193 1194 error = spa_get_stats(zc->zc_name, &config, zc->zc_value, 1195 sizeof (zc->zc_value)); 1196 1197 if (config != NULL) { 1198 ret = put_nvlist(zc, config); 1199 nvlist_free(config); 1200 1201 /* 1202 * The config may be present even if 'error' is non-zero. 1203 * In this case we return success, and preserve the real errno 1204 * in 'zc_cookie'. 1205 */ 1206 zc->zc_cookie = error; 1207 } else { 1208 ret = error; 1209 } 1210 1211 return (ret); 1212 } 1213 1214 /* 1215 * Try to import the given pool, returning pool stats as appropriate so that 1216 * user land knows which devices are available and overall pool health. 1217 */ 1218 static int 1219 zfs_ioc_pool_tryimport(zfs_cmd_t *zc) 1220 { 1221 nvlist_t *tryconfig, *config; 1222 int error; 1223 1224 if ((error = get_nvlist(zc->zc_nvlist_conf, zc->zc_nvlist_conf_size, 1225 zc->zc_iflags, &tryconfig)) != 0) 1226 return (error); 1227 1228 config = spa_tryimport(tryconfig); 1229 1230 nvlist_free(tryconfig); 1231 1232 if (config == NULL) 1233 return (EINVAL); 1234 1235 error = put_nvlist(zc, config); 1236 nvlist_free(config); 1237 1238 return (error); 1239 } 1240 1241 /* 1242 * inputs: 1243 * zc_name name of the pool 1244 * zc_cookie scan func (pool_scan_func_t) 1245 */ 1246 static int 1247 zfs_ioc_pool_scan(zfs_cmd_t *zc) 1248 { 1249 spa_t *spa; 1250 int error; 1251 1252 if ((error = spa_open(zc->zc_name, &spa, FTAG)) != 0) 1253 return (error); 1254 1255 if (zc->zc_cookie == POOL_SCAN_NONE) 1256 error = spa_scan_stop(spa); 1257 else 1258 error = spa_scan(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 /* 1415 * inputs: 1416 * zc_name name of the pool 1417 * zc_nvlist_conf nvlist of devices to remove 1418 * zc_cookie to stop the remove? 1419 */ 1420 static int 1421 zfs_ioc_vdev_remove(zfs_cmd_t *zc) 1422 { 1423 spa_t *spa; 1424 int error; 1425 1426 error = spa_open(zc->zc_name, &spa, FTAG); 1427 if (error != 0) 1428 return (error); 1429 error = spa_vdev_remove(spa, zc->zc_guid, B_FALSE); 1430 spa_close(spa, FTAG); 1431 return (error); 1432 } 1433 1434 static int 1435 zfs_ioc_vdev_set_state(zfs_cmd_t *zc) 1436 { 1437 spa_t *spa; 1438 int error; 1439 vdev_state_t newstate = VDEV_STATE_UNKNOWN; 1440 1441 if ((error = spa_open(zc->zc_name, &spa, FTAG)) != 0) 1442 return (error); 1443 switch (zc->zc_cookie) { 1444 case VDEV_STATE_ONLINE: 1445 error = vdev_online(spa, zc->zc_guid, zc->zc_obj, &newstate); 1446 break; 1447 1448 case VDEV_STATE_OFFLINE: 1449 error = vdev_offline(spa, zc->zc_guid, zc->zc_obj); 1450 break; 1451 1452 case VDEV_STATE_FAULTED: 1453 if (zc->zc_obj != VDEV_AUX_ERR_EXCEEDED && 1454 zc->zc_obj != VDEV_AUX_EXTERNAL) 1455 zc->zc_obj = VDEV_AUX_ERR_EXCEEDED; 1456 1457 error = vdev_fault(spa, zc->zc_guid, zc->zc_obj); 1458 break; 1459 1460 case VDEV_STATE_DEGRADED: 1461 if (zc->zc_obj != VDEV_AUX_ERR_EXCEEDED && 1462 zc->zc_obj != VDEV_AUX_EXTERNAL) 1463 zc->zc_obj = VDEV_AUX_ERR_EXCEEDED; 1464 1465 error = vdev_degrade(spa, zc->zc_guid, zc->zc_obj); 1466 break; 1467 1468 default: 1469 error = EINVAL; 1470 } 1471 zc->zc_cookie = newstate; 1472 spa_close(spa, FTAG); 1473 return (error); 1474 } 1475 1476 static int 1477 zfs_ioc_vdev_attach(zfs_cmd_t *zc) 1478 { 1479 spa_t *spa; 1480 int replacing = zc->zc_cookie; 1481 nvlist_t *config; 1482 int error; 1483 1484 if ((error = spa_open(zc->zc_name, &spa, FTAG)) != 0) 1485 return (error); 1486 1487 if ((error = get_nvlist(zc->zc_nvlist_conf, zc->zc_nvlist_conf_size, 1488 zc->zc_iflags, &config)) == 0) { 1489 error = spa_vdev_attach(spa, zc->zc_guid, config, replacing); 1490 nvlist_free(config); 1491 } 1492 1493 spa_close(spa, FTAG); 1494 return (error); 1495 } 1496 1497 static int 1498 zfs_ioc_vdev_detach(zfs_cmd_t *zc) 1499 { 1500 spa_t *spa; 1501 int error; 1502 1503 if ((error = spa_open(zc->zc_name, &spa, FTAG)) != 0) 1504 return (error); 1505 1506 error = spa_vdev_detach(spa, zc->zc_guid, 0, B_FALSE); 1507 1508 spa_close(spa, FTAG); 1509 return (error); 1510 } 1511 1512 static int 1513 zfs_ioc_vdev_split(zfs_cmd_t *zc) 1514 { 1515 spa_t *spa; 1516 nvlist_t *config, *props = NULL; 1517 int error; 1518 boolean_t exp = !!(zc->zc_cookie & ZPOOL_EXPORT_AFTER_SPLIT); 1519 1520 if ((error = spa_open(zc->zc_name, &spa, FTAG)) != 0) 1521 return (error); 1522 1523 if (error = get_nvlist(zc->zc_nvlist_conf, zc->zc_nvlist_conf_size, 1524 zc->zc_iflags, &config)) { 1525 spa_close(spa, FTAG); 1526 return (error); 1527 } 1528 1529 if (zc->zc_nvlist_src_size != 0 && (error = 1530 get_nvlist(zc->zc_nvlist_src, zc->zc_nvlist_src_size, 1531 zc->zc_iflags, &props))) { 1532 spa_close(spa, FTAG); 1533 nvlist_free(config); 1534 return (error); 1535 } 1536 1537 error = spa_vdev_split_mirror(spa, zc->zc_string, config, props, exp); 1538 1539 spa_close(spa, FTAG); 1540 1541 nvlist_free(config); 1542 nvlist_free(props); 1543 1544 return (error); 1545 } 1546 1547 static int 1548 zfs_ioc_vdev_setpath(zfs_cmd_t *zc) 1549 { 1550 spa_t *spa; 1551 char *path = zc->zc_value; 1552 uint64_t guid = zc->zc_guid; 1553 int error; 1554 1555 error = spa_open(zc->zc_name, &spa, FTAG); 1556 if (error != 0) 1557 return (error); 1558 1559 error = spa_vdev_setpath(spa, guid, path); 1560 spa_close(spa, FTAG); 1561 return (error); 1562 } 1563 1564 static int 1565 zfs_ioc_vdev_setfru(zfs_cmd_t *zc) 1566 { 1567 spa_t *spa; 1568 char *fru = zc->zc_value; 1569 uint64_t guid = zc->zc_guid; 1570 int error; 1571 1572 error = spa_open(zc->zc_name, &spa, FTAG); 1573 if (error != 0) 1574 return (error); 1575 1576 error = spa_vdev_setfru(spa, guid, fru); 1577 spa_close(spa, FTAG); 1578 return (error); 1579 } 1580 1581 /* 1582 * inputs: 1583 * zc_name name of filesystem 1584 * zc_nvlist_dst_size size of buffer for property nvlist 1585 * 1586 * outputs: 1587 * zc_objset_stats stats 1588 * zc_nvlist_dst property nvlist 1589 * zc_nvlist_dst_size size of property nvlist 1590 */ 1591 static int 1592 zfs_ioc_objset_stats(zfs_cmd_t *zc) 1593 { 1594 objset_t *os = NULL; 1595 int error; 1596 nvlist_t *nv; 1597 1598 if (error = dmu_objset_hold(zc->zc_name, FTAG, &os)) 1599 return (error); 1600 1601 dmu_objset_fast_stat(os, &zc->zc_objset_stats); 1602 1603 if (zc->zc_nvlist_dst != 0 && 1604 (error = dsl_prop_get_all(os, &nv)) == 0) { 1605 dmu_objset_stats(os, nv); 1606 /* 1607 * NB: zvol_get_stats() will read the objset contents, 1608 * which we aren't supposed to do with a 1609 * DS_MODE_USER hold, because it could be 1610 * inconsistent. So this is a bit of a workaround... 1611 * XXX reading with out owning 1612 */ 1613 if (!zc->zc_objset_stats.dds_inconsistent) { 1614 if (dmu_objset_type(os) == DMU_OST_ZVOL) 1615 VERIFY(zvol_get_stats(os, nv) == 0); 1616 } 1617 error = put_nvlist(zc, nv); 1618 nvlist_free(nv); 1619 } 1620 1621 dmu_objset_rele(os, FTAG); 1622 return (error); 1623 } 1624 1625 /* 1626 * inputs: 1627 * zc_name name of filesystem 1628 * zc_nvlist_dst_size size of buffer for property nvlist 1629 * 1630 * outputs: 1631 * zc_nvlist_dst received property nvlist 1632 * zc_nvlist_dst_size size of received property nvlist 1633 * 1634 * Gets received properties (distinct from local properties on or after 1635 * SPA_VERSION_RECVD_PROPS) for callers who want to differentiate received from 1636 * local property values. 1637 */ 1638 static int 1639 zfs_ioc_objset_recvd_props(zfs_cmd_t *zc) 1640 { 1641 objset_t *os = NULL; 1642 int error; 1643 nvlist_t *nv; 1644 1645 if (error = dmu_objset_hold(zc->zc_name, FTAG, &os)) 1646 return (error); 1647 1648 /* 1649 * Without this check, we would return local property values if the 1650 * caller has not already received properties on or after 1651 * SPA_VERSION_RECVD_PROPS. 1652 */ 1653 if (!dsl_prop_get_hasrecvd(os)) { 1654 dmu_objset_rele(os, FTAG); 1655 return (ENOTSUP); 1656 } 1657 1658 if (zc->zc_nvlist_dst != 0 && 1659 (error = dsl_prop_get_received(os, &nv)) == 0) { 1660 error = put_nvlist(zc, nv); 1661 nvlist_free(nv); 1662 } 1663 1664 dmu_objset_rele(os, FTAG); 1665 return (error); 1666 } 1667 1668 static int 1669 nvl_add_zplprop(objset_t *os, nvlist_t *props, zfs_prop_t prop) 1670 { 1671 uint64_t value; 1672 int error; 1673 1674 /* 1675 * zfs_get_zplprop() will either find a value or give us 1676 * the default value (if there is one). 1677 */ 1678 if ((error = zfs_get_zplprop(os, prop, &value)) != 0) 1679 return (error); 1680 VERIFY(nvlist_add_uint64(props, zfs_prop_to_name(prop), value) == 0); 1681 return (0); 1682 } 1683 1684 /* 1685 * inputs: 1686 * zc_name name of filesystem 1687 * zc_nvlist_dst_size size of buffer for zpl property nvlist 1688 * 1689 * outputs: 1690 * zc_nvlist_dst zpl property nvlist 1691 * zc_nvlist_dst_size size of zpl property nvlist 1692 */ 1693 static int 1694 zfs_ioc_objset_zplprops(zfs_cmd_t *zc) 1695 { 1696 objset_t *os; 1697 int err; 1698 1699 /* XXX reading without owning */ 1700 if (err = dmu_objset_hold(zc->zc_name, FTAG, &os)) 1701 return (err); 1702 1703 dmu_objset_fast_stat(os, &zc->zc_objset_stats); 1704 1705 /* 1706 * NB: nvl_add_zplprop() will read the objset contents, 1707 * which we aren't supposed to do with a DS_MODE_USER 1708 * hold, because it could be inconsistent. 1709 */ 1710 if (zc->zc_nvlist_dst != NULL && 1711 !zc->zc_objset_stats.dds_inconsistent && 1712 dmu_objset_type(os) == DMU_OST_ZFS) { 1713 nvlist_t *nv; 1714 1715 VERIFY(nvlist_alloc(&nv, NV_UNIQUE_NAME, KM_SLEEP) == 0); 1716 if ((err = nvl_add_zplprop(os, nv, ZFS_PROP_VERSION)) == 0 && 1717 (err = nvl_add_zplprop(os, nv, ZFS_PROP_NORMALIZE)) == 0 && 1718 (err = nvl_add_zplprop(os, nv, ZFS_PROP_UTF8ONLY)) == 0 && 1719 (err = nvl_add_zplprop(os, nv, ZFS_PROP_CASE)) == 0) 1720 err = put_nvlist(zc, nv); 1721 nvlist_free(nv); 1722 } else { 1723 err = ENOENT; 1724 } 1725 dmu_objset_rele(os, FTAG); 1726 return (err); 1727 } 1728 1729 static boolean_t 1730 dataset_name_hidden(const char *name) 1731 { 1732 /* 1733 * Skip over datasets that are not visible in this zone, 1734 * internal datasets (which have a $ in their name), and 1735 * temporary datasets (which have a % in their name). 1736 */ 1737 if (strchr(name, '$') != NULL) 1738 return (B_TRUE); 1739 if (strchr(name, '%') != NULL) 1740 return (B_TRUE); 1741 if (!INGLOBALZONE(curproc) && !zone_dataset_visible(name, NULL)) 1742 return (B_TRUE); 1743 return (B_FALSE); 1744 } 1745 1746 /* 1747 * inputs: 1748 * zc_name name of filesystem 1749 * zc_cookie zap cursor 1750 * zc_nvlist_dst_size size of buffer for property nvlist 1751 * 1752 * outputs: 1753 * zc_name name of next filesystem 1754 * zc_cookie zap cursor 1755 * zc_objset_stats stats 1756 * zc_nvlist_dst property nvlist 1757 * zc_nvlist_dst_size size of property nvlist 1758 */ 1759 static int 1760 zfs_ioc_dataset_list_next(zfs_cmd_t *zc) 1761 { 1762 objset_t *os; 1763 int error; 1764 char *p; 1765 size_t orig_len = strlen(zc->zc_name); 1766 1767 top: 1768 if (error = dmu_objset_hold(zc->zc_name, FTAG, &os)) { 1769 if (error == ENOENT) 1770 error = ESRCH; 1771 return (error); 1772 } 1773 1774 p = strrchr(zc->zc_name, '/'); 1775 if (p == NULL || p[1] != '\0') 1776 (void) strlcat(zc->zc_name, "/", sizeof (zc->zc_name)); 1777 p = zc->zc_name + strlen(zc->zc_name); 1778 1779 /* 1780 * Pre-fetch the datasets. dmu_objset_prefetch() always returns 0 1781 * but is not declared void because its called by dmu_objset_find(). 1782 */ 1783 if (zc->zc_cookie == 0) { 1784 uint64_t cookie = 0; 1785 int len = sizeof (zc->zc_name) - (p - zc->zc_name); 1786 1787 while (dmu_dir_list_next(os, len, p, NULL, &cookie) == 0) 1788 (void) dmu_objset_prefetch(p, NULL); 1789 } 1790 1791 do { 1792 error = dmu_dir_list_next(os, 1793 sizeof (zc->zc_name) - (p - zc->zc_name), p, 1794 NULL, &zc->zc_cookie); 1795 if (error == ENOENT) 1796 error = ESRCH; 1797 } while (error == 0 && dataset_name_hidden(zc->zc_name) && 1798 !(zc->zc_iflags & FKIOCTL)); 1799 dmu_objset_rele(os, FTAG); 1800 1801 /* 1802 * If it's an internal dataset (ie. with a '$' in its name), 1803 * don't try to get stats for it, otherwise we'll return ENOENT. 1804 */ 1805 if (error == 0 && strchr(zc->zc_name, '$') == NULL) { 1806 error = zfs_ioc_objset_stats(zc); /* fill in the stats */ 1807 if (error == ENOENT) { 1808 /* We lost a race with destroy, get the next one. */ 1809 zc->zc_name[orig_len] = '\0'; 1810 goto top; 1811 } 1812 } 1813 return (error); 1814 } 1815 1816 /* 1817 * inputs: 1818 * zc_name name of filesystem 1819 * zc_cookie zap cursor 1820 * zc_nvlist_dst_size size of buffer for property nvlist 1821 * 1822 * outputs: 1823 * zc_name name of next snapshot 1824 * zc_objset_stats stats 1825 * zc_nvlist_dst property nvlist 1826 * zc_nvlist_dst_size size of property nvlist 1827 */ 1828 static int 1829 zfs_ioc_snapshot_list_next(zfs_cmd_t *zc) 1830 { 1831 objset_t *os; 1832 int error; 1833 1834 top: 1835 if (zc->zc_cookie == 0) 1836 (void) dmu_objset_find(zc->zc_name, dmu_objset_prefetch, 1837 NULL, DS_FIND_SNAPSHOTS); 1838 1839 error = dmu_objset_hold(zc->zc_name, FTAG, &os); 1840 if (error) 1841 return (error == ENOENT ? ESRCH : error); 1842 1843 /* 1844 * A dataset name of maximum length cannot have any snapshots, 1845 * so exit immediately. 1846 */ 1847 if (strlcat(zc->zc_name, "@", sizeof (zc->zc_name)) >= MAXNAMELEN) { 1848 dmu_objset_rele(os, FTAG); 1849 return (ESRCH); 1850 } 1851 1852 error = dmu_snapshot_list_next(os, 1853 sizeof (zc->zc_name) - strlen(zc->zc_name), 1854 zc->zc_name + strlen(zc->zc_name), NULL, &zc->zc_cookie, NULL); 1855 dmu_objset_rele(os, FTAG); 1856 if (error == 0) { 1857 error = zfs_ioc_objset_stats(zc); /* fill in the stats */ 1858 if (error == ENOENT) { 1859 /* We lost a race with destroy, get the next one. */ 1860 *strchr(zc->zc_name, '@') = '\0'; 1861 goto top; 1862 } 1863 } else if (error == ENOENT) { 1864 error = ESRCH; 1865 } 1866 1867 /* if we failed, undo the @ that we tacked on to zc_name */ 1868 if (error) 1869 *strchr(zc->zc_name, '@') = '\0'; 1870 return (error); 1871 } 1872 1873 static int 1874 zfs_prop_set_userquota(const char *dsname, nvpair_t *pair) 1875 { 1876 const char *propname = nvpair_name(pair); 1877 uint64_t *valary; 1878 unsigned int vallen; 1879 const char *domain; 1880 char *dash; 1881 zfs_userquota_prop_t type; 1882 uint64_t rid; 1883 uint64_t quota; 1884 zfsvfs_t *zfsvfs; 1885 int err; 1886 1887 if (nvpair_type(pair) == DATA_TYPE_NVLIST) { 1888 nvlist_t *attrs; 1889 VERIFY(nvpair_value_nvlist(pair, &attrs) == 0); 1890 if (nvlist_lookup_nvpair(attrs, ZPROP_VALUE, 1891 &pair) != 0) 1892 return (EINVAL); 1893 } 1894 1895 /* 1896 * A correctly constructed propname is encoded as 1897 * userquota@<rid>-<domain>. 1898 */ 1899 if ((dash = strchr(propname, '-')) == NULL || 1900 nvpair_value_uint64_array(pair, &valary, &vallen) != 0 || 1901 vallen != 3) 1902 return (EINVAL); 1903 1904 domain = dash + 1; 1905 type = valary[0]; 1906 rid = valary[1]; 1907 quota = valary[2]; 1908 1909 err = zfsvfs_hold(dsname, FTAG, &zfsvfs); 1910 if (err == 0) { 1911 err = zfs_set_userquota(zfsvfs, type, domain, rid, quota); 1912 zfsvfs_rele(zfsvfs, FTAG); 1913 } 1914 1915 return (err); 1916 } 1917 1918 /* 1919 * If the named property is one that has a special function to set its value, 1920 * return 0 on success and a positive error code on failure; otherwise if it is 1921 * not one of the special properties handled by this function, return -1. 1922 * 1923 * XXX: It would be better for callers of the property interface if we handled 1924 * these special cases in dsl_prop.c (in the dsl layer). 1925 */ 1926 static int 1927 zfs_prop_set_special(const char *dsname, zprop_source_t source, 1928 nvpair_t *pair) 1929 { 1930 const char *propname = nvpair_name(pair); 1931 zfs_prop_t prop = zfs_name_to_prop(propname); 1932 uint64_t intval; 1933 int err; 1934 1935 if (prop == ZPROP_INVAL) { 1936 if (zfs_prop_userquota(propname)) 1937 return (zfs_prop_set_userquota(dsname, pair)); 1938 return (-1); 1939 } 1940 1941 if (nvpair_type(pair) == DATA_TYPE_NVLIST) { 1942 nvlist_t *attrs; 1943 VERIFY(nvpair_value_nvlist(pair, &attrs) == 0); 1944 VERIFY(nvlist_lookup_nvpair(attrs, ZPROP_VALUE, 1945 &pair) == 0); 1946 } 1947 1948 if (zfs_prop_get_type(prop) == PROP_TYPE_STRING) 1949 return (-1); 1950 1951 VERIFY(0 == nvpair_value_uint64(pair, &intval)); 1952 1953 switch (prop) { 1954 case ZFS_PROP_QUOTA: 1955 err = dsl_dir_set_quota(dsname, source, intval); 1956 break; 1957 case ZFS_PROP_REFQUOTA: 1958 err = dsl_dataset_set_quota(dsname, source, intval); 1959 break; 1960 case ZFS_PROP_RESERVATION: 1961 err = dsl_dir_set_reservation(dsname, source, intval); 1962 break; 1963 case ZFS_PROP_REFRESERVATION: 1964 err = dsl_dataset_set_reservation(dsname, source, intval); 1965 break; 1966 case ZFS_PROP_VOLSIZE: 1967 err = zvol_set_volsize(dsname, ddi_driver_major(zfs_dip), 1968 intval); 1969 break; 1970 case ZFS_PROP_VERSION: 1971 { 1972 zfsvfs_t *zfsvfs; 1973 1974 if ((err = zfsvfs_hold(dsname, FTAG, &zfsvfs)) != 0) 1975 break; 1976 1977 err = zfs_set_version(zfsvfs, intval); 1978 zfsvfs_rele(zfsvfs, FTAG); 1979 1980 if (err == 0 && intval >= ZPL_VERSION_USERSPACE) { 1981 zfs_cmd_t *zc; 1982 1983 zc = kmem_zalloc(sizeof (zfs_cmd_t), KM_SLEEP); 1984 (void) strcpy(zc->zc_name, dsname); 1985 (void) zfs_ioc_userspace_upgrade(zc); 1986 kmem_free(zc, sizeof (zfs_cmd_t)); 1987 } 1988 break; 1989 } 1990 1991 default: 1992 err = -1; 1993 } 1994 1995 return (err); 1996 } 1997 1998 /* 1999 * This function is best effort. If it fails to set any of the given properties, 2000 * it continues to set as many as it can and returns the first error 2001 * encountered. If the caller provides a non-NULL errlist, it also gives the 2002 * complete list of names of all the properties it failed to set along with the 2003 * corresponding error numbers. The caller is responsible for freeing the 2004 * returned errlist. 2005 * 2006 * If every property is set successfully, zero is returned and the list pointed 2007 * at by errlist is NULL. 2008 */ 2009 int 2010 zfs_set_prop_nvlist(const char *dsname, zprop_source_t source, nvlist_t *nvl, 2011 nvlist_t **errlist) 2012 { 2013 nvpair_t *pair; 2014 nvpair_t *propval; 2015 int rv = 0; 2016 uint64_t intval; 2017 char *strval; 2018 nvlist_t *genericnvl; 2019 nvlist_t *errors; 2020 nvlist_t *retrynvl; 2021 2022 VERIFY(nvlist_alloc(&genericnvl, NV_UNIQUE_NAME, KM_SLEEP) == 0); 2023 VERIFY(nvlist_alloc(&errors, NV_UNIQUE_NAME, KM_SLEEP) == 0); 2024 VERIFY(nvlist_alloc(&retrynvl, NV_UNIQUE_NAME, KM_SLEEP) == 0); 2025 2026 retry: 2027 pair = NULL; 2028 while ((pair = nvlist_next_nvpair(nvl, pair)) != NULL) { 2029 const char *propname = nvpair_name(pair); 2030 zfs_prop_t prop = zfs_name_to_prop(propname); 2031 int err = 0; 2032 2033 /* decode the property value */ 2034 propval = pair; 2035 if (nvpair_type(pair) == DATA_TYPE_NVLIST) { 2036 nvlist_t *attrs; 2037 VERIFY(nvpair_value_nvlist(pair, &attrs) == 0); 2038 if (nvlist_lookup_nvpair(attrs, ZPROP_VALUE, 2039 &propval) != 0) 2040 err = EINVAL; 2041 } 2042 2043 /* Validate value type */ 2044 if (err == 0 && prop == ZPROP_INVAL) { 2045 if (zfs_prop_user(propname)) { 2046 if (nvpair_type(propval) != DATA_TYPE_STRING) 2047 err = EINVAL; 2048 } else if (zfs_prop_userquota(propname)) { 2049 if (nvpair_type(propval) != 2050 DATA_TYPE_UINT64_ARRAY) 2051 err = EINVAL; 2052 } 2053 } else if (err == 0) { 2054 if (nvpair_type(propval) == DATA_TYPE_STRING) { 2055 if (zfs_prop_get_type(prop) != PROP_TYPE_STRING) 2056 err = EINVAL; 2057 } else if (nvpair_type(propval) == DATA_TYPE_UINT64) { 2058 const char *unused; 2059 2060 VERIFY(nvpair_value_uint64(propval, 2061 &intval) == 0); 2062 2063 switch (zfs_prop_get_type(prop)) { 2064 case PROP_TYPE_NUMBER: 2065 break; 2066 case PROP_TYPE_STRING: 2067 err = EINVAL; 2068 break; 2069 case PROP_TYPE_INDEX: 2070 if (zfs_prop_index_to_string(prop, 2071 intval, &unused) != 0) 2072 err = EINVAL; 2073 break; 2074 default: 2075 cmn_err(CE_PANIC, 2076 "unknown property type"); 2077 } 2078 } else { 2079 err = EINVAL; 2080 } 2081 } 2082 2083 /* Validate permissions */ 2084 if (err == 0) 2085 err = zfs_check_settable(dsname, pair, CRED()); 2086 2087 if (err == 0) { 2088 err = zfs_prop_set_special(dsname, source, pair); 2089 if (err == -1) { 2090 /* 2091 * For better performance we build up a list of 2092 * properties to set in a single transaction. 2093 */ 2094 err = nvlist_add_nvpair(genericnvl, pair); 2095 } else if (err != 0 && nvl != retrynvl) { 2096 /* 2097 * This may be a spurious error caused by 2098 * receiving quota and reservation out of order. 2099 * Try again in a second pass. 2100 */ 2101 err = nvlist_add_nvpair(retrynvl, pair); 2102 } 2103 } 2104 2105 if (err != 0) 2106 VERIFY(nvlist_add_int32(errors, propname, err) == 0); 2107 } 2108 2109 if (nvl != retrynvl && !nvlist_empty(retrynvl)) { 2110 nvl = retrynvl; 2111 goto retry; 2112 } 2113 2114 if (!nvlist_empty(genericnvl) && 2115 dsl_props_set(dsname, source, genericnvl) != 0) { 2116 /* 2117 * If this fails, we still want to set as many properties as we 2118 * can, so try setting them individually. 2119 */ 2120 pair = NULL; 2121 while ((pair = nvlist_next_nvpair(genericnvl, pair)) != NULL) { 2122 const char *propname = nvpair_name(pair); 2123 int err = 0; 2124 2125 propval = pair; 2126 if (nvpair_type(pair) == DATA_TYPE_NVLIST) { 2127 nvlist_t *attrs; 2128 VERIFY(nvpair_value_nvlist(pair, &attrs) == 0); 2129 VERIFY(nvlist_lookup_nvpair(attrs, ZPROP_VALUE, 2130 &propval) == 0); 2131 } 2132 2133 if (nvpair_type(propval) == DATA_TYPE_STRING) { 2134 VERIFY(nvpair_value_string(propval, 2135 &strval) == 0); 2136 err = dsl_prop_set(dsname, propname, source, 1, 2137 strlen(strval) + 1, strval); 2138 } else { 2139 VERIFY(nvpair_value_uint64(propval, 2140 &intval) == 0); 2141 err = dsl_prop_set(dsname, propname, source, 8, 2142 1, &intval); 2143 } 2144 2145 if (err != 0) { 2146 VERIFY(nvlist_add_int32(errors, propname, 2147 err) == 0); 2148 } 2149 } 2150 } 2151 nvlist_free(genericnvl); 2152 nvlist_free(retrynvl); 2153 2154 if ((pair = nvlist_next_nvpair(errors, NULL)) == NULL) { 2155 nvlist_free(errors); 2156 errors = NULL; 2157 } else { 2158 VERIFY(nvpair_value_int32(pair, &rv) == 0); 2159 } 2160 2161 if (errlist == NULL) 2162 nvlist_free(errors); 2163 else 2164 *errlist = errors; 2165 2166 return (rv); 2167 } 2168 2169 /* 2170 * Check that all the properties are valid user properties. 2171 */ 2172 static int 2173 zfs_check_userprops(char *fsname, nvlist_t *nvl) 2174 { 2175 nvpair_t *pair = NULL; 2176 int error = 0; 2177 2178 while ((pair = nvlist_next_nvpair(nvl, pair)) != NULL) { 2179 const char *propname = nvpair_name(pair); 2180 char *valstr; 2181 2182 if (!zfs_prop_user(propname) || 2183 nvpair_type(pair) != DATA_TYPE_STRING) 2184 return (EINVAL); 2185 2186 if (error = zfs_secpolicy_write_perms(fsname, 2187 ZFS_DELEG_PERM_USERPROP, CRED())) 2188 return (error); 2189 2190 if (strlen(propname) >= ZAP_MAXNAMELEN) 2191 return (ENAMETOOLONG); 2192 2193 VERIFY(nvpair_value_string(pair, &valstr) == 0); 2194 if (strlen(valstr) >= ZAP_MAXVALUELEN) 2195 return (E2BIG); 2196 } 2197 return (0); 2198 } 2199 2200 static void 2201 props_skip(nvlist_t *props, nvlist_t *skipped, nvlist_t **newprops) 2202 { 2203 nvpair_t *pair; 2204 2205 VERIFY(nvlist_alloc(newprops, NV_UNIQUE_NAME, KM_SLEEP) == 0); 2206 2207 pair = NULL; 2208 while ((pair = nvlist_next_nvpair(props, pair)) != NULL) { 2209 if (nvlist_exists(skipped, nvpair_name(pair))) 2210 continue; 2211 2212 VERIFY(nvlist_add_nvpair(*newprops, pair) == 0); 2213 } 2214 } 2215 2216 static int 2217 clear_received_props(objset_t *os, const char *fs, nvlist_t *props, 2218 nvlist_t *skipped) 2219 { 2220 int err = 0; 2221 nvlist_t *cleared_props = NULL; 2222 props_skip(props, skipped, &cleared_props); 2223 if (!nvlist_empty(cleared_props)) { 2224 /* 2225 * Acts on local properties until the dataset has received 2226 * properties at least once on or after SPA_VERSION_RECVD_PROPS. 2227 */ 2228 zprop_source_t flags = (ZPROP_SRC_NONE | 2229 (dsl_prop_get_hasrecvd(os) ? ZPROP_SRC_RECEIVED : 0)); 2230 err = zfs_set_prop_nvlist(fs, flags, cleared_props, NULL); 2231 } 2232 nvlist_free(cleared_props); 2233 return (err); 2234 } 2235 2236 /* 2237 * inputs: 2238 * zc_name name of filesystem 2239 * zc_value name of property to set 2240 * zc_nvlist_src{_size} nvlist of properties to apply 2241 * zc_cookie received properties flag 2242 * 2243 * outputs: 2244 * zc_nvlist_dst{_size} error for each unapplied received property 2245 */ 2246 static int 2247 zfs_ioc_set_prop(zfs_cmd_t *zc) 2248 { 2249 nvlist_t *nvl; 2250 boolean_t received = zc->zc_cookie; 2251 zprop_source_t source = (received ? ZPROP_SRC_RECEIVED : 2252 ZPROP_SRC_LOCAL); 2253 nvlist_t *errors = NULL; 2254 int error; 2255 2256 if ((error = get_nvlist(zc->zc_nvlist_src, zc->zc_nvlist_src_size, 2257 zc->zc_iflags, &nvl)) != 0) 2258 return (error); 2259 2260 if (received) { 2261 nvlist_t *origprops; 2262 objset_t *os; 2263 2264 if (dmu_objset_hold(zc->zc_name, FTAG, &os) == 0) { 2265 if (dsl_prop_get_received(os, &origprops) == 0) { 2266 (void) clear_received_props(os, 2267 zc->zc_name, origprops, nvl); 2268 nvlist_free(origprops); 2269 } 2270 2271 dsl_prop_set_hasrecvd(os); 2272 dmu_objset_rele(os, FTAG); 2273 } 2274 } 2275 2276 error = zfs_set_prop_nvlist(zc->zc_name, source, nvl, &errors); 2277 2278 if (zc->zc_nvlist_dst != NULL && errors != NULL) { 2279 (void) put_nvlist(zc, errors); 2280 } 2281 2282 nvlist_free(errors); 2283 nvlist_free(nvl); 2284 return (error); 2285 } 2286 2287 /* 2288 * inputs: 2289 * zc_name name of filesystem 2290 * zc_value name of property to inherit 2291 * zc_cookie revert to received value if TRUE 2292 * 2293 * outputs: none 2294 */ 2295 static int 2296 zfs_ioc_inherit_prop(zfs_cmd_t *zc) 2297 { 2298 const char *propname = zc->zc_value; 2299 zfs_prop_t prop = zfs_name_to_prop(propname); 2300 boolean_t received = zc->zc_cookie; 2301 zprop_source_t source = (received 2302 ? ZPROP_SRC_NONE /* revert to received value, if any */ 2303 : ZPROP_SRC_INHERITED); /* explicitly inherit */ 2304 2305 if (received) { 2306 nvlist_t *dummy; 2307 nvpair_t *pair; 2308 zprop_type_t type; 2309 int err; 2310 2311 /* 2312 * zfs_prop_set_special() expects properties in the form of an 2313 * nvpair with type info. 2314 */ 2315 if (prop == ZPROP_INVAL) { 2316 if (!zfs_prop_user(propname)) 2317 return (EINVAL); 2318 2319 type = PROP_TYPE_STRING; 2320 } else if (prop == ZFS_PROP_VOLSIZE || 2321 prop == ZFS_PROP_VERSION) { 2322 return (EINVAL); 2323 } else { 2324 type = zfs_prop_get_type(prop); 2325 } 2326 2327 VERIFY(nvlist_alloc(&dummy, NV_UNIQUE_NAME, KM_SLEEP) == 0); 2328 2329 switch (type) { 2330 case PROP_TYPE_STRING: 2331 VERIFY(0 == nvlist_add_string(dummy, propname, "")); 2332 break; 2333 case PROP_TYPE_NUMBER: 2334 case PROP_TYPE_INDEX: 2335 VERIFY(0 == nvlist_add_uint64(dummy, propname, 0)); 2336 break; 2337 default: 2338 nvlist_free(dummy); 2339 return (EINVAL); 2340 } 2341 2342 pair = nvlist_next_nvpair(dummy, NULL); 2343 err = zfs_prop_set_special(zc->zc_name, source, pair); 2344 nvlist_free(dummy); 2345 if (err != -1) 2346 return (err); /* special property already handled */ 2347 } else { 2348 /* 2349 * Only check this in the non-received case. We want to allow 2350 * 'inherit -S' to revert non-inheritable properties like quota 2351 * and reservation to the received or default values even though 2352 * they are not considered inheritable. 2353 */ 2354 if (prop != ZPROP_INVAL && !zfs_prop_inheritable(prop)) 2355 return (EINVAL); 2356 } 2357 2358 /* the property name has been validated by zfs_secpolicy_inherit() */ 2359 return (dsl_prop_set(zc->zc_name, zc->zc_value, source, 0, 0, NULL)); 2360 } 2361 2362 static int 2363 zfs_ioc_pool_set_props(zfs_cmd_t *zc) 2364 { 2365 nvlist_t *props; 2366 spa_t *spa; 2367 int error; 2368 nvpair_t *pair; 2369 2370 if (error = get_nvlist(zc->zc_nvlist_src, zc->zc_nvlist_src_size, 2371 zc->zc_iflags, &props)) 2372 return (error); 2373 2374 /* 2375 * If the only property is the configfile, then just do a spa_lookup() 2376 * to handle the faulted case. 2377 */ 2378 pair = nvlist_next_nvpair(props, NULL); 2379 if (pair != NULL && strcmp(nvpair_name(pair), 2380 zpool_prop_to_name(ZPOOL_PROP_CACHEFILE)) == 0 && 2381 nvlist_next_nvpair(props, pair) == NULL) { 2382 mutex_enter(&spa_namespace_lock); 2383 if ((spa = spa_lookup(zc->zc_name)) != NULL) { 2384 spa_configfile_set(spa, props, B_FALSE); 2385 spa_config_sync(spa, B_FALSE, B_TRUE); 2386 } 2387 mutex_exit(&spa_namespace_lock); 2388 if (spa != NULL) { 2389 nvlist_free(props); 2390 return (0); 2391 } 2392 } 2393 2394 if ((error = spa_open(zc->zc_name, &spa, FTAG)) != 0) { 2395 nvlist_free(props); 2396 return (error); 2397 } 2398 2399 error = spa_prop_set(spa, props); 2400 2401 nvlist_free(props); 2402 spa_close(spa, FTAG); 2403 2404 return (error); 2405 } 2406 2407 static int 2408 zfs_ioc_pool_get_props(zfs_cmd_t *zc) 2409 { 2410 spa_t *spa; 2411 int error; 2412 nvlist_t *nvp = NULL; 2413 2414 if ((error = spa_open(zc->zc_name, &spa, FTAG)) != 0) { 2415 /* 2416 * If the pool is faulted, there may be properties we can still 2417 * get (such as altroot and cachefile), so attempt to get them 2418 * anyway. 2419 */ 2420 mutex_enter(&spa_namespace_lock); 2421 if ((spa = spa_lookup(zc->zc_name)) != NULL) 2422 error = spa_prop_get(spa, &nvp); 2423 mutex_exit(&spa_namespace_lock); 2424 } else { 2425 error = spa_prop_get(spa, &nvp); 2426 spa_close(spa, FTAG); 2427 } 2428 2429 if (error == 0 && zc->zc_nvlist_dst != NULL) 2430 error = put_nvlist(zc, nvp); 2431 else 2432 error = EFAULT; 2433 2434 nvlist_free(nvp); 2435 return (error); 2436 } 2437 2438 /* 2439 * inputs: 2440 * zc_name name of filesystem 2441 * zc_nvlist_src{_size} nvlist of delegated permissions 2442 * zc_perm_action allow/unallow flag 2443 * 2444 * outputs: none 2445 */ 2446 static int 2447 zfs_ioc_set_fsacl(zfs_cmd_t *zc) 2448 { 2449 int error; 2450 nvlist_t *fsaclnv = NULL; 2451 2452 if ((error = get_nvlist(zc->zc_nvlist_src, zc->zc_nvlist_src_size, 2453 zc->zc_iflags, &fsaclnv)) != 0) 2454 return (error); 2455 2456 /* 2457 * Verify nvlist is constructed correctly 2458 */ 2459 if ((error = zfs_deleg_verify_nvlist(fsaclnv)) != 0) { 2460 nvlist_free(fsaclnv); 2461 return (EINVAL); 2462 } 2463 2464 /* 2465 * If we don't have PRIV_SYS_MOUNT, then validate 2466 * that user is allowed to hand out each permission in 2467 * the nvlist(s) 2468 */ 2469 2470 error = secpolicy_zfs(CRED()); 2471 if (error) { 2472 if (zc->zc_perm_action == B_FALSE) { 2473 error = dsl_deleg_can_allow(zc->zc_name, 2474 fsaclnv, CRED()); 2475 } else { 2476 error = dsl_deleg_can_unallow(zc->zc_name, 2477 fsaclnv, CRED()); 2478 } 2479 } 2480 2481 if (error == 0) 2482 error = dsl_deleg_set(zc->zc_name, fsaclnv, zc->zc_perm_action); 2483 2484 nvlist_free(fsaclnv); 2485 return (error); 2486 } 2487 2488 /* 2489 * inputs: 2490 * zc_name name of filesystem 2491 * 2492 * outputs: 2493 * zc_nvlist_src{_size} nvlist of delegated permissions 2494 */ 2495 static int 2496 zfs_ioc_get_fsacl(zfs_cmd_t *zc) 2497 { 2498 nvlist_t *nvp; 2499 int error; 2500 2501 if ((error = dsl_deleg_get(zc->zc_name, &nvp)) == 0) { 2502 error = put_nvlist(zc, nvp); 2503 nvlist_free(nvp); 2504 } 2505 2506 return (error); 2507 } 2508 2509 /* 2510 * Search the vfs list for a specified resource. Returns a pointer to it 2511 * or NULL if no suitable entry is found. The caller of this routine 2512 * is responsible for releasing the returned vfs pointer. 2513 */ 2514 static vfs_t * 2515 zfs_get_vfs(const char *resource) 2516 { 2517 struct vfs *vfsp; 2518 struct vfs *vfs_found = NULL; 2519 2520 vfs_list_read_lock(); 2521 vfsp = rootvfs; 2522 do { 2523 if (strcmp(refstr_value(vfsp->vfs_resource), resource) == 0) { 2524 VFS_HOLD(vfsp); 2525 vfs_found = vfsp; 2526 break; 2527 } 2528 vfsp = vfsp->vfs_next; 2529 } while (vfsp != rootvfs); 2530 vfs_list_unlock(); 2531 return (vfs_found); 2532 } 2533 2534 /* ARGSUSED */ 2535 static void 2536 zfs_create_cb(objset_t *os, void *arg, cred_t *cr, dmu_tx_t *tx) 2537 { 2538 zfs_creat_t *zct = arg; 2539 2540 zfs_create_fs(os, cr, zct->zct_zplprops, tx); 2541 } 2542 2543 #define ZFS_PROP_UNDEFINED ((uint64_t)-1) 2544 2545 /* 2546 * inputs: 2547 * createprops list of properties requested by creator 2548 * default_zplver zpl version to use if unspecified in createprops 2549 * fuids_ok fuids allowed in this version of the spa? 2550 * os parent objset pointer (NULL if root fs) 2551 * 2552 * outputs: 2553 * zplprops values for the zplprops we attach to the master node object 2554 * is_ci true if requested file system will be purely case-insensitive 2555 * 2556 * Determine the settings for utf8only, normalization and 2557 * casesensitivity. Specific values may have been requested by the 2558 * creator and/or we can inherit values from the parent dataset. If 2559 * the file system is of too early a vintage, a creator can not 2560 * request settings for these properties, even if the requested 2561 * setting is the default value. We don't actually want to create dsl 2562 * properties for these, so remove them from the source nvlist after 2563 * processing. 2564 */ 2565 static int 2566 zfs_fill_zplprops_impl(objset_t *os, uint64_t zplver, 2567 boolean_t fuids_ok, boolean_t sa_ok, nvlist_t *createprops, 2568 nvlist_t *zplprops, boolean_t *is_ci) 2569 { 2570 uint64_t sense = ZFS_PROP_UNDEFINED; 2571 uint64_t norm = ZFS_PROP_UNDEFINED; 2572 uint64_t u8 = ZFS_PROP_UNDEFINED; 2573 2574 ASSERT(zplprops != NULL); 2575 2576 /* 2577 * Pull out creator prop choices, if any. 2578 */ 2579 if (createprops) { 2580 (void) nvlist_lookup_uint64(createprops, 2581 zfs_prop_to_name(ZFS_PROP_VERSION), &zplver); 2582 (void) nvlist_lookup_uint64(createprops, 2583 zfs_prop_to_name(ZFS_PROP_NORMALIZE), &norm); 2584 (void) nvlist_remove_all(createprops, 2585 zfs_prop_to_name(ZFS_PROP_NORMALIZE)); 2586 (void) nvlist_lookup_uint64(createprops, 2587 zfs_prop_to_name(ZFS_PROP_UTF8ONLY), &u8); 2588 (void) nvlist_remove_all(createprops, 2589 zfs_prop_to_name(ZFS_PROP_UTF8ONLY)); 2590 (void) nvlist_lookup_uint64(createprops, 2591 zfs_prop_to_name(ZFS_PROP_CASE), &sense); 2592 (void) nvlist_remove_all(createprops, 2593 zfs_prop_to_name(ZFS_PROP_CASE)); 2594 } 2595 2596 /* 2597 * If the zpl version requested is whacky or the file system 2598 * or pool is version is too "young" to support normalization 2599 * and the creator tried to set a value for one of the props, 2600 * error out. 2601 */ 2602 if ((zplver < ZPL_VERSION_INITIAL || zplver > ZPL_VERSION) || 2603 (zplver >= ZPL_VERSION_FUID && !fuids_ok) || 2604 (zplver >= ZPL_VERSION_SA && !sa_ok) || 2605 (zplver < ZPL_VERSION_NORMALIZATION && 2606 (norm != ZFS_PROP_UNDEFINED || u8 != ZFS_PROP_UNDEFINED || 2607 sense != ZFS_PROP_UNDEFINED))) 2608 return (ENOTSUP); 2609 2610 /* 2611 * Put the version in the zplprops 2612 */ 2613 VERIFY(nvlist_add_uint64(zplprops, 2614 zfs_prop_to_name(ZFS_PROP_VERSION), zplver) == 0); 2615 2616 if (norm == ZFS_PROP_UNDEFINED) 2617 VERIFY(zfs_get_zplprop(os, ZFS_PROP_NORMALIZE, &norm) == 0); 2618 VERIFY(nvlist_add_uint64(zplprops, 2619 zfs_prop_to_name(ZFS_PROP_NORMALIZE), norm) == 0); 2620 2621 /* 2622 * If we're normalizing, names must always be valid UTF-8 strings. 2623 */ 2624 if (norm) 2625 u8 = 1; 2626 if (u8 == ZFS_PROP_UNDEFINED) 2627 VERIFY(zfs_get_zplprop(os, ZFS_PROP_UTF8ONLY, &u8) == 0); 2628 VERIFY(nvlist_add_uint64(zplprops, 2629 zfs_prop_to_name(ZFS_PROP_UTF8ONLY), u8) == 0); 2630 2631 if (sense == ZFS_PROP_UNDEFINED) 2632 VERIFY(zfs_get_zplprop(os, ZFS_PROP_CASE, &sense) == 0); 2633 VERIFY(nvlist_add_uint64(zplprops, 2634 zfs_prop_to_name(ZFS_PROP_CASE), sense) == 0); 2635 2636 if (is_ci) 2637 *is_ci = (sense == ZFS_CASE_INSENSITIVE); 2638 2639 return (0); 2640 } 2641 2642 static int 2643 zfs_fill_zplprops(const char *dataset, nvlist_t *createprops, 2644 nvlist_t *zplprops, boolean_t *is_ci) 2645 { 2646 boolean_t fuids_ok, sa_ok; 2647 uint64_t zplver = ZPL_VERSION; 2648 objset_t *os = NULL; 2649 char parentname[MAXNAMELEN]; 2650 char *cp; 2651 spa_t *spa; 2652 uint64_t spa_vers; 2653 int error; 2654 2655 (void) strlcpy(parentname, dataset, sizeof (parentname)); 2656 cp = strrchr(parentname, '/'); 2657 ASSERT(cp != NULL); 2658 cp[0] = '\0'; 2659 2660 if ((error = spa_open(dataset, &spa, FTAG)) != 0) 2661 return (error); 2662 2663 spa_vers = spa_version(spa); 2664 spa_close(spa, FTAG); 2665 2666 zplver = zfs_zpl_version_map(spa_vers); 2667 fuids_ok = (zplver >= ZPL_VERSION_FUID); 2668 sa_ok = (zplver >= ZPL_VERSION_SA); 2669 2670 /* 2671 * Open parent object set so we can inherit zplprop values. 2672 */ 2673 if ((error = dmu_objset_hold(parentname, FTAG, &os)) != 0) 2674 return (error); 2675 2676 error = zfs_fill_zplprops_impl(os, zplver, fuids_ok, sa_ok, createprops, 2677 zplprops, is_ci); 2678 dmu_objset_rele(os, FTAG); 2679 return (error); 2680 } 2681 2682 static int 2683 zfs_fill_zplprops_root(uint64_t spa_vers, nvlist_t *createprops, 2684 nvlist_t *zplprops, boolean_t *is_ci) 2685 { 2686 boolean_t fuids_ok; 2687 boolean_t sa_ok; 2688 uint64_t zplver = ZPL_VERSION; 2689 int error; 2690 2691 zplver = zfs_zpl_version_map(spa_vers); 2692 fuids_ok = (zplver >= ZPL_VERSION_FUID); 2693 sa_ok = (zplver >= ZPL_VERSION_SA); 2694 2695 error = zfs_fill_zplprops_impl(NULL, zplver, fuids_ok, sa_ok, 2696 createprops, zplprops, is_ci); 2697 return (error); 2698 } 2699 2700 /* 2701 * inputs: 2702 * zc_objset_type type of objset to create (fs vs zvol) 2703 * zc_name name of new objset 2704 * zc_value name of snapshot to clone from (may be empty) 2705 * zc_nvlist_src{_size} nvlist of properties to apply 2706 * 2707 * outputs: none 2708 */ 2709 static int 2710 zfs_ioc_create(zfs_cmd_t *zc) 2711 { 2712 objset_t *clone; 2713 int error = 0; 2714 zfs_creat_t zct; 2715 nvlist_t *nvprops = NULL; 2716 void (*cbfunc)(objset_t *os, void *arg, cred_t *cr, dmu_tx_t *tx); 2717 dmu_objset_type_t type = zc->zc_objset_type; 2718 2719 switch (type) { 2720 2721 case DMU_OST_ZFS: 2722 cbfunc = zfs_create_cb; 2723 break; 2724 2725 case DMU_OST_ZVOL: 2726 cbfunc = zvol_create_cb; 2727 break; 2728 2729 default: 2730 cbfunc = NULL; 2731 break; 2732 } 2733 if (strchr(zc->zc_name, '@') || 2734 strchr(zc->zc_name, '%')) 2735 return (EINVAL); 2736 2737 if (zc->zc_nvlist_src != NULL && 2738 (error = get_nvlist(zc->zc_nvlist_src, zc->zc_nvlist_src_size, 2739 zc->zc_iflags, &nvprops)) != 0) 2740 return (error); 2741 2742 zct.zct_zplprops = NULL; 2743 zct.zct_props = nvprops; 2744 2745 if (zc->zc_value[0] != '\0') { 2746 /* 2747 * We're creating a clone of an existing snapshot. 2748 */ 2749 zc->zc_value[sizeof (zc->zc_value) - 1] = '\0'; 2750 if (dataset_namecheck(zc->zc_value, NULL, NULL) != 0) { 2751 nvlist_free(nvprops); 2752 return (EINVAL); 2753 } 2754 2755 error = dmu_objset_hold(zc->zc_value, FTAG, &clone); 2756 if (error) { 2757 nvlist_free(nvprops); 2758 return (error); 2759 } 2760 2761 error = dmu_objset_clone(zc->zc_name, dmu_objset_ds(clone), 0); 2762 dmu_objset_rele(clone, FTAG); 2763 if (error) { 2764 nvlist_free(nvprops); 2765 return (error); 2766 } 2767 } else { 2768 boolean_t is_insensitive = B_FALSE; 2769 2770 if (cbfunc == NULL) { 2771 nvlist_free(nvprops); 2772 return (EINVAL); 2773 } 2774 2775 if (type == DMU_OST_ZVOL) { 2776 uint64_t volsize, volblocksize; 2777 2778 if (nvprops == NULL || 2779 nvlist_lookup_uint64(nvprops, 2780 zfs_prop_to_name(ZFS_PROP_VOLSIZE), 2781 &volsize) != 0) { 2782 nvlist_free(nvprops); 2783 return (EINVAL); 2784 } 2785 2786 if ((error = nvlist_lookup_uint64(nvprops, 2787 zfs_prop_to_name(ZFS_PROP_VOLBLOCKSIZE), 2788 &volblocksize)) != 0 && error != ENOENT) { 2789 nvlist_free(nvprops); 2790 return (EINVAL); 2791 } 2792 2793 if (error != 0) 2794 volblocksize = zfs_prop_default_numeric( 2795 ZFS_PROP_VOLBLOCKSIZE); 2796 2797 if ((error = zvol_check_volblocksize( 2798 volblocksize)) != 0 || 2799 (error = zvol_check_volsize(volsize, 2800 volblocksize)) != 0) { 2801 nvlist_free(nvprops); 2802 return (error); 2803 } 2804 } else if (type == DMU_OST_ZFS) { 2805 int error; 2806 2807 /* 2808 * We have to have normalization and 2809 * case-folding flags correct when we do the 2810 * file system creation, so go figure them out 2811 * now. 2812 */ 2813 VERIFY(nvlist_alloc(&zct.zct_zplprops, 2814 NV_UNIQUE_NAME, KM_SLEEP) == 0); 2815 error = zfs_fill_zplprops(zc->zc_name, nvprops, 2816 zct.zct_zplprops, &is_insensitive); 2817 if (error != 0) { 2818 nvlist_free(nvprops); 2819 nvlist_free(zct.zct_zplprops); 2820 return (error); 2821 } 2822 } 2823 error = dmu_objset_create(zc->zc_name, type, 2824 is_insensitive ? DS_FLAG_CI_DATASET : 0, cbfunc, &zct); 2825 nvlist_free(zct.zct_zplprops); 2826 } 2827 2828 /* 2829 * It would be nice to do this atomically. 2830 */ 2831 if (error == 0) { 2832 error = zfs_set_prop_nvlist(zc->zc_name, ZPROP_SRC_LOCAL, 2833 nvprops, NULL); 2834 if (error != 0) 2835 (void) dmu_objset_destroy(zc->zc_name, B_FALSE); 2836 } 2837 nvlist_free(nvprops); 2838 return (error); 2839 } 2840 2841 /* 2842 * inputs: 2843 * zc_name name of filesystem 2844 * zc_value short name of snapshot 2845 * zc_cookie recursive flag 2846 * zc_nvlist_src[_size] property list 2847 * 2848 * outputs: 2849 * zc_value short snapname (i.e. part after the '@') 2850 */ 2851 static int 2852 zfs_ioc_snapshot(zfs_cmd_t *zc) 2853 { 2854 nvlist_t *nvprops = NULL; 2855 int error; 2856 boolean_t recursive = zc->zc_cookie; 2857 2858 if (snapshot_namecheck(zc->zc_value, NULL, NULL) != 0) 2859 return (EINVAL); 2860 2861 if (zc->zc_nvlist_src != NULL && 2862 (error = get_nvlist(zc->zc_nvlist_src, zc->zc_nvlist_src_size, 2863 zc->zc_iflags, &nvprops)) != 0) 2864 return (error); 2865 2866 error = zfs_check_userprops(zc->zc_name, nvprops); 2867 if (error) 2868 goto out; 2869 2870 if (!nvlist_empty(nvprops) && 2871 zfs_earlier_version(zc->zc_name, SPA_VERSION_SNAP_PROPS)) { 2872 error = ENOTSUP; 2873 goto out; 2874 } 2875 2876 error = dmu_objset_snapshot(zc->zc_name, zc->zc_value, 2877 nvprops, recursive); 2878 2879 out: 2880 nvlist_free(nvprops); 2881 return (error); 2882 } 2883 2884 int 2885 zfs_unmount_snap(const char *name, void *arg) 2886 { 2887 vfs_t *vfsp = NULL; 2888 2889 if (arg) { 2890 char *snapname = arg; 2891 char *fullname = kmem_asprintf("%s@%s", name, snapname); 2892 vfsp = zfs_get_vfs(fullname); 2893 strfree(fullname); 2894 } else if (strchr(name, '@')) { 2895 vfsp = zfs_get_vfs(name); 2896 } 2897 2898 if (vfsp) { 2899 /* 2900 * Always force the unmount for snapshots. 2901 */ 2902 int flag = MS_FORCE; 2903 int err; 2904 2905 if ((err = vn_vfswlock(vfsp->vfs_vnodecovered)) != 0) { 2906 VFS_RELE(vfsp); 2907 return (err); 2908 } 2909 VFS_RELE(vfsp); 2910 if ((err = dounmount(vfsp, flag, kcred)) != 0) 2911 return (err); 2912 } 2913 return (0); 2914 } 2915 2916 /* 2917 * inputs: 2918 * zc_name name of filesystem 2919 * zc_value short name of snapshot 2920 * zc_defer_destroy mark for deferred destroy 2921 * 2922 * outputs: none 2923 */ 2924 static int 2925 zfs_ioc_destroy_snaps(zfs_cmd_t *zc) 2926 { 2927 int err; 2928 2929 if (snapshot_namecheck(zc->zc_value, NULL, NULL) != 0) 2930 return (EINVAL); 2931 err = dmu_objset_find(zc->zc_name, 2932 zfs_unmount_snap, zc->zc_value, DS_FIND_CHILDREN); 2933 if (err) 2934 return (err); 2935 return (dmu_snapshots_destroy(zc->zc_name, zc->zc_value, 2936 zc->zc_defer_destroy)); 2937 } 2938 2939 /* 2940 * inputs: 2941 * zc_name name of dataset to destroy 2942 * zc_objset_type type of objset 2943 * zc_defer_destroy mark for deferred destroy 2944 * 2945 * outputs: none 2946 */ 2947 static int 2948 zfs_ioc_destroy(zfs_cmd_t *zc) 2949 { 2950 int err; 2951 if (strchr(zc->zc_name, '@') && zc->zc_objset_type == DMU_OST_ZFS) { 2952 err = zfs_unmount_snap(zc->zc_name, NULL); 2953 if (err) 2954 return (err); 2955 } 2956 2957 err = dmu_objset_destroy(zc->zc_name, zc->zc_defer_destroy); 2958 if (zc->zc_objset_type == DMU_OST_ZVOL && err == 0) 2959 (void) zvol_remove_minor(zc->zc_name); 2960 return (err); 2961 } 2962 2963 /* 2964 * inputs: 2965 * zc_name name of dataset to rollback (to most recent snapshot) 2966 * 2967 * outputs: none 2968 */ 2969 static int 2970 zfs_ioc_rollback(zfs_cmd_t *zc) 2971 { 2972 dsl_dataset_t *ds, *clone; 2973 int error; 2974 zfsvfs_t *zfsvfs; 2975 char *clone_name; 2976 2977 error = dsl_dataset_hold(zc->zc_name, FTAG, &ds); 2978 if (error) 2979 return (error); 2980 2981 /* must not be a snapshot */ 2982 if (dsl_dataset_is_snapshot(ds)) { 2983 dsl_dataset_rele(ds, FTAG); 2984 return (EINVAL); 2985 } 2986 2987 /* must have a most recent snapshot */ 2988 if (ds->ds_phys->ds_prev_snap_txg < TXG_INITIAL) { 2989 dsl_dataset_rele(ds, FTAG); 2990 return (EINVAL); 2991 } 2992 2993 /* 2994 * Create clone of most recent snapshot. 2995 */ 2996 clone_name = kmem_asprintf("%s/%%rollback", zc->zc_name); 2997 error = dmu_objset_clone(clone_name, ds->ds_prev, DS_FLAG_INCONSISTENT); 2998 if (error) 2999 goto out; 3000 3001 error = dsl_dataset_own(clone_name, B_TRUE, FTAG, &clone); 3002 if (error) 3003 goto out; 3004 3005 /* 3006 * Do clone swap. 3007 */ 3008 if (getzfsvfs(zc->zc_name, &zfsvfs) == 0) { 3009 error = zfs_suspend_fs(zfsvfs); 3010 if (error == 0) { 3011 int resume_err; 3012 3013 if (dsl_dataset_tryown(ds, B_FALSE, FTAG)) { 3014 error = dsl_dataset_clone_swap(clone, ds, 3015 B_TRUE); 3016 dsl_dataset_disown(ds, FTAG); 3017 ds = NULL; 3018 } else { 3019 error = EBUSY; 3020 } 3021 resume_err = zfs_resume_fs(zfsvfs, zc->zc_name); 3022 error = error ? error : resume_err; 3023 } 3024 VFS_RELE(zfsvfs->z_vfs); 3025 } else { 3026 if (dsl_dataset_tryown(ds, B_FALSE, FTAG)) { 3027 error = dsl_dataset_clone_swap(clone, ds, B_TRUE); 3028 dsl_dataset_disown(ds, FTAG); 3029 ds = NULL; 3030 } else { 3031 error = EBUSY; 3032 } 3033 } 3034 3035 /* 3036 * Destroy clone (which also closes it). 3037 */ 3038 (void) dsl_dataset_destroy(clone, FTAG, B_FALSE); 3039 3040 out: 3041 strfree(clone_name); 3042 if (ds) 3043 dsl_dataset_rele(ds, FTAG); 3044 return (error); 3045 } 3046 3047 /* 3048 * inputs: 3049 * zc_name old name of dataset 3050 * zc_value new name of dataset 3051 * zc_cookie recursive flag (only valid for snapshots) 3052 * 3053 * outputs: none 3054 */ 3055 static int 3056 zfs_ioc_rename(zfs_cmd_t *zc) 3057 { 3058 boolean_t recursive = zc->zc_cookie & 1; 3059 3060 zc->zc_value[sizeof (zc->zc_value) - 1] = '\0'; 3061 if (dataset_namecheck(zc->zc_value, NULL, NULL) != 0 || 3062 strchr(zc->zc_value, '%')) 3063 return (EINVAL); 3064 3065 /* 3066 * Unmount snapshot unless we're doing a recursive rename, 3067 * in which case the dataset code figures out which snapshots 3068 * to unmount. 3069 */ 3070 if (!recursive && strchr(zc->zc_name, '@') != NULL && 3071 zc->zc_objset_type == DMU_OST_ZFS) { 3072 int err = zfs_unmount_snap(zc->zc_name, NULL); 3073 if (err) 3074 return (err); 3075 } 3076 if (zc->zc_objset_type == DMU_OST_ZVOL) 3077 (void) zvol_remove_minor(zc->zc_name); 3078 return (dmu_objset_rename(zc->zc_name, zc->zc_value, recursive)); 3079 } 3080 3081 static int 3082 zfs_check_settable(const char *dsname, nvpair_t *pair, cred_t *cr) 3083 { 3084 const char *propname = nvpair_name(pair); 3085 boolean_t issnap = (strchr(dsname, '@') != NULL); 3086 zfs_prop_t prop = zfs_name_to_prop(propname); 3087 uint64_t intval; 3088 int err; 3089 3090 if (prop == ZPROP_INVAL) { 3091 if (zfs_prop_user(propname)) { 3092 if (err = zfs_secpolicy_write_perms(dsname, 3093 ZFS_DELEG_PERM_USERPROP, cr)) 3094 return (err); 3095 return (0); 3096 } 3097 3098 if (!issnap && zfs_prop_userquota(propname)) { 3099 const char *perm = NULL; 3100 const char *uq_prefix = 3101 zfs_userquota_prop_prefixes[ZFS_PROP_USERQUOTA]; 3102 const char *gq_prefix = 3103 zfs_userquota_prop_prefixes[ZFS_PROP_GROUPQUOTA]; 3104 3105 if (strncmp(propname, uq_prefix, 3106 strlen(uq_prefix)) == 0) { 3107 perm = ZFS_DELEG_PERM_USERQUOTA; 3108 } else if (strncmp(propname, gq_prefix, 3109 strlen(gq_prefix)) == 0) { 3110 perm = ZFS_DELEG_PERM_GROUPQUOTA; 3111 } else { 3112 /* USERUSED and GROUPUSED are read-only */ 3113 return (EINVAL); 3114 } 3115 3116 if (err = zfs_secpolicy_write_perms(dsname, perm, cr)) 3117 return (err); 3118 return (0); 3119 } 3120 3121 return (EINVAL); 3122 } 3123 3124 if (issnap) 3125 return (EINVAL); 3126 3127 if (nvpair_type(pair) == DATA_TYPE_NVLIST) { 3128 /* 3129 * dsl_prop_get_all_impl() returns properties in this 3130 * format. 3131 */ 3132 nvlist_t *attrs; 3133 VERIFY(nvpair_value_nvlist(pair, &attrs) == 0); 3134 VERIFY(nvlist_lookup_nvpair(attrs, ZPROP_VALUE, 3135 &pair) == 0); 3136 } 3137 3138 /* 3139 * Check that this value is valid for this pool version 3140 */ 3141 switch (prop) { 3142 case ZFS_PROP_COMPRESSION: 3143 /* 3144 * If the user specified gzip compression, make sure 3145 * the SPA supports it. We ignore any errors here since 3146 * we'll catch them later. 3147 */ 3148 if (nvpair_type(pair) == DATA_TYPE_UINT64 && 3149 nvpair_value_uint64(pair, &intval) == 0) { 3150 if (intval >= ZIO_COMPRESS_GZIP_1 && 3151 intval <= ZIO_COMPRESS_GZIP_9 && 3152 zfs_earlier_version(dsname, 3153 SPA_VERSION_GZIP_COMPRESSION)) { 3154 return (ENOTSUP); 3155 } 3156 3157 if (intval == ZIO_COMPRESS_ZLE && 3158 zfs_earlier_version(dsname, 3159 SPA_VERSION_ZLE_COMPRESSION)) 3160 return (ENOTSUP); 3161 3162 /* 3163 * If this is a bootable dataset then 3164 * verify that the compression algorithm 3165 * is supported for booting. We must return 3166 * something other than ENOTSUP since it 3167 * implies a downrev pool version. 3168 */ 3169 if (zfs_is_bootfs(dsname) && 3170 !BOOTFS_COMPRESS_VALID(intval)) { 3171 return (ERANGE); 3172 } 3173 } 3174 break; 3175 3176 case ZFS_PROP_COPIES: 3177 if (zfs_earlier_version(dsname, SPA_VERSION_DITTO_BLOCKS)) 3178 return (ENOTSUP); 3179 break; 3180 3181 case ZFS_PROP_DEDUP: 3182 if (zfs_earlier_version(dsname, SPA_VERSION_DEDUP)) 3183 return (ENOTSUP); 3184 break; 3185 3186 case ZFS_PROP_SHARESMB: 3187 if (zpl_earlier_version(dsname, ZPL_VERSION_FUID)) 3188 return (ENOTSUP); 3189 break; 3190 3191 case ZFS_PROP_ACLINHERIT: 3192 if (nvpair_type(pair) == DATA_TYPE_UINT64 && 3193 nvpair_value_uint64(pair, &intval) == 0) { 3194 if (intval == ZFS_ACL_PASSTHROUGH_X && 3195 zfs_earlier_version(dsname, 3196 SPA_VERSION_PASSTHROUGH_X)) 3197 return (ENOTSUP); 3198 } 3199 break; 3200 } 3201 3202 return (zfs_secpolicy_setprop(dsname, prop, pair, CRED())); 3203 } 3204 3205 /* 3206 * Removes properties from the given props list that fail permission checks 3207 * needed to clear them and to restore them in case of a receive error. For each 3208 * property, make sure we have both set and inherit permissions. 3209 * 3210 * Returns the first error encountered if any permission checks fail. If the 3211 * caller provides a non-NULL errlist, it also gives the complete list of names 3212 * of all the properties that failed a permission check along with the 3213 * corresponding error numbers. The caller is responsible for freeing the 3214 * returned errlist. 3215 * 3216 * If every property checks out successfully, zero is returned and the list 3217 * pointed at by errlist is NULL. 3218 */ 3219 static int 3220 zfs_check_clearable(char *dataset, nvlist_t *props, nvlist_t **errlist) 3221 { 3222 zfs_cmd_t *zc; 3223 nvpair_t *pair, *next_pair; 3224 nvlist_t *errors; 3225 int err, rv = 0; 3226 3227 if (props == NULL) 3228 return (0); 3229 3230 VERIFY(nvlist_alloc(&errors, NV_UNIQUE_NAME, KM_SLEEP) == 0); 3231 3232 zc = kmem_alloc(sizeof (zfs_cmd_t), KM_SLEEP); 3233 (void) strcpy(zc->zc_name, dataset); 3234 pair = nvlist_next_nvpair(props, NULL); 3235 while (pair != NULL) { 3236 next_pair = nvlist_next_nvpair(props, pair); 3237 3238 (void) strcpy(zc->zc_value, nvpair_name(pair)); 3239 if ((err = zfs_check_settable(dataset, pair, CRED())) != 0 || 3240 (err = zfs_secpolicy_inherit(zc, CRED())) != 0) { 3241 VERIFY(nvlist_remove_nvpair(props, pair) == 0); 3242 VERIFY(nvlist_add_int32(errors, 3243 zc->zc_value, err) == 0); 3244 } 3245 pair = next_pair; 3246 } 3247 kmem_free(zc, sizeof (zfs_cmd_t)); 3248 3249 if ((pair = nvlist_next_nvpair(errors, NULL)) == NULL) { 3250 nvlist_free(errors); 3251 errors = NULL; 3252 } else { 3253 VERIFY(nvpair_value_int32(pair, &rv) == 0); 3254 } 3255 3256 if (errlist == NULL) 3257 nvlist_free(errors); 3258 else 3259 *errlist = errors; 3260 3261 return (rv); 3262 } 3263 3264 static boolean_t 3265 propval_equals(nvpair_t *p1, nvpair_t *p2) 3266 { 3267 if (nvpair_type(p1) == DATA_TYPE_NVLIST) { 3268 /* dsl_prop_get_all_impl() format */ 3269 nvlist_t *attrs; 3270 VERIFY(nvpair_value_nvlist(p1, &attrs) == 0); 3271 VERIFY(nvlist_lookup_nvpair(attrs, ZPROP_VALUE, 3272 &p1) == 0); 3273 } 3274 3275 if (nvpair_type(p2) == DATA_TYPE_NVLIST) { 3276 nvlist_t *attrs; 3277 VERIFY(nvpair_value_nvlist(p2, &attrs) == 0); 3278 VERIFY(nvlist_lookup_nvpair(attrs, ZPROP_VALUE, 3279 &p2) == 0); 3280 } 3281 3282 if (nvpair_type(p1) != nvpair_type(p2)) 3283 return (B_FALSE); 3284 3285 if (nvpair_type(p1) == DATA_TYPE_STRING) { 3286 char *valstr1, *valstr2; 3287 3288 VERIFY(nvpair_value_string(p1, (char **)&valstr1) == 0); 3289 VERIFY(nvpair_value_string(p2, (char **)&valstr2) == 0); 3290 return (strcmp(valstr1, valstr2) == 0); 3291 } else { 3292 uint64_t intval1, intval2; 3293 3294 VERIFY(nvpair_value_uint64(p1, &intval1) == 0); 3295 VERIFY(nvpair_value_uint64(p2, &intval2) == 0); 3296 return (intval1 == intval2); 3297 } 3298 } 3299 3300 /* 3301 * Remove properties from props if they are not going to change (as determined 3302 * by comparison with origprops). Remove them from origprops as well, since we 3303 * do not need to clear or restore properties that won't change. 3304 */ 3305 static void 3306 props_reduce(nvlist_t *props, nvlist_t *origprops) 3307 { 3308 nvpair_t *pair, *next_pair; 3309 3310 if (origprops == NULL) 3311 return; /* all props need to be received */ 3312 3313 pair = nvlist_next_nvpair(props, NULL); 3314 while (pair != NULL) { 3315 const char *propname = nvpair_name(pair); 3316 nvpair_t *match; 3317 3318 next_pair = nvlist_next_nvpair(props, pair); 3319 3320 if ((nvlist_lookup_nvpair(origprops, propname, 3321 &match) != 0) || !propval_equals(pair, match)) 3322 goto next; /* need to set received value */ 3323 3324 /* don't clear the existing received value */ 3325 (void) nvlist_remove_nvpair(origprops, match); 3326 /* don't bother receiving the property */ 3327 (void) nvlist_remove_nvpair(props, pair); 3328 next: 3329 pair = next_pair; 3330 } 3331 } 3332 3333 #ifdef DEBUG 3334 static boolean_t zfs_ioc_recv_inject_err; 3335 #endif 3336 3337 /* 3338 * inputs: 3339 * zc_name name of containing filesystem 3340 * zc_nvlist_src{_size} nvlist of properties to apply 3341 * zc_value name of snapshot to create 3342 * zc_string name of clone origin (if DRR_FLAG_CLONE) 3343 * zc_cookie file descriptor to recv from 3344 * zc_begin_record the BEGIN record of the stream (not byteswapped) 3345 * zc_guid force flag 3346 * zc_cleanup_fd cleanup-on-exit file descriptor 3347 * zc_action_handle handle for this guid/ds mapping (or zero on first call) 3348 * 3349 * outputs: 3350 * zc_cookie number of bytes read 3351 * zc_nvlist_dst{_size} error for each unapplied received property 3352 * zc_obj zprop_errflags_t 3353 * zc_action_handle handle for this guid/ds mapping 3354 */ 3355 static int 3356 zfs_ioc_recv(zfs_cmd_t *zc) 3357 { 3358 file_t *fp; 3359 objset_t *os; 3360 dmu_recv_cookie_t drc; 3361 boolean_t force = (boolean_t)zc->zc_guid; 3362 int fd; 3363 int error = 0; 3364 int props_error = 0; 3365 nvlist_t *errors; 3366 offset_t off; 3367 nvlist_t *props = NULL; /* sent properties */ 3368 nvlist_t *origprops = NULL; /* existing properties */ 3369 objset_t *origin = NULL; 3370 char *tosnap; 3371 char tofs[ZFS_MAXNAMELEN]; 3372 boolean_t first_recvd_props = B_FALSE; 3373 3374 if (dataset_namecheck(zc->zc_value, NULL, NULL) != 0 || 3375 strchr(zc->zc_value, '@') == NULL || 3376 strchr(zc->zc_value, '%')) 3377 return (EINVAL); 3378 3379 (void) strcpy(tofs, zc->zc_value); 3380 tosnap = strchr(tofs, '@'); 3381 *tosnap++ = '\0'; 3382 3383 if (zc->zc_nvlist_src != NULL && 3384 (error = get_nvlist(zc->zc_nvlist_src, zc->zc_nvlist_src_size, 3385 zc->zc_iflags, &props)) != 0) 3386 return (error); 3387 3388 fd = zc->zc_cookie; 3389 fp = getf(fd); 3390 if (fp == NULL) { 3391 nvlist_free(props); 3392 return (EBADF); 3393 } 3394 3395 VERIFY(nvlist_alloc(&errors, NV_UNIQUE_NAME, KM_SLEEP) == 0); 3396 3397 if (props && dmu_objset_hold(tofs, FTAG, &os) == 0) { 3398 if ((spa_version(os->os_spa) >= SPA_VERSION_RECVD_PROPS) && 3399 !dsl_prop_get_hasrecvd(os)) { 3400 first_recvd_props = B_TRUE; 3401 } 3402 3403 /* 3404 * If new received properties are supplied, they are to 3405 * completely replace the existing received properties, so stash 3406 * away the existing ones. 3407 */ 3408 if (dsl_prop_get_received(os, &origprops) == 0) { 3409 nvlist_t *errlist = NULL; 3410 /* 3411 * Don't bother writing a property if its value won't 3412 * change (and avoid the unnecessary security checks). 3413 * 3414 * The first receive after SPA_VERSION_RECVD_PROPS is a 3415 * special case where we blow away all local properties 3416 * regardless. 3417 */ 3418 if (!first_recvd_props) 3419 props_reduce(props, origprops); 3420 if (zfs_check_clearable(tofs, origprops, 3421 &errlist) != 0) 3422 (void) nvlist_merge(errors, errlist, 0); 3423 nvlist_free(errlist); 3424 } 3425 3426 dmu_objset_rele(os, FTAG); 3427 } 3428 3429 if (zc->zc_string[0]) { 3430 error = dmu_objset_hold(zc->zc_string, FTAG, &origin); 3431 if (error) 3432 goto out; 3433 } 3434 3435 error = dmu_recv_begin(tofs, tosnap, zc->zc_top_ds, 3436 &zc->zc_begin_record, force, origin, &drc); 3437 if (origin) 3438 dmu_objset_rele(origin, FTAG); 3439 if (error) 3440 goto out; 3441 3442 /* 3443 * Set properties before we receive the stream so that they are applied 3444 * to the new data. Note that we must call dmu_recv_stream() if 3445 * dmu_recv_begin() succeeds. 3446 */ 3447 if (props) { 3448 nvlist_t *errlist; 3449 3450 if (dmu_objset_from_ds(drc.drc_logical_ds, &os) == 0) { 3451 if (drc.drc_newfs) { 3452 if (spa_version(os->os_spa) >= 3453 SPA_VERSION_RECVD_PROPS) 3454 first_recvd_props = B_TRUE; 3455 } else if (origprops != NULL) { 3456 if (clear_received_props(os, tofs, origprops, 3457 first_recvd_props ? NULL : props) != 0) 3458 zc->zc_obj |= ZPROP_ERR_NOCLEAR; 3459 } else { 3460 zc->zc_obj |= ZPROP_ERR_NOCLEAR; 3461 } 3462 dsl_prop_set_hasrecvd(os); 3463 } else if (!drc.drc_newfs) { 3464 zc->zc_obj |= ZPROP_ERR_NOCLEAR; 3465 } 3466 3467 (void) zfs_set_prop_nvlist(tofs, ZPROP_SRC_RECEIVED, 3468 props, &errlist); 3469 (void) nvlist_merge(errors, errlist, 0); 3470 nvlist_free(errlist); 3471 } 3472 3473 if (fit_error_list(zc, &errors) != 0 || put_nvlist(zc, errors) != 0) { 3474 /* 3475 * Caller made zc->zc_nvlist_dst less than the minimum expected 3476 * size or supplied an invalid address. 3477 */ 3478 props_error = EINVAL; 3479 } 3480 3481 off = fp->f_offset; 3482 error = dmu_recv_stream(&drc, fp->f_vnode, &off, zc->zc_cleanup_fd, 3483 &zc->zc_action_handle); 3484 3485 if (error == 0) { 3486 zfsvfs_t *zfsvfs = NULL; 3487 3488 if (getzfsvfs(tofs, &zfsvfs) == 0) { 3489 /* online recv */ 3490 int end_err; 3491 3492 error = zfs_suspend_fs(zfsvfs); 3493 /* 3494 * If the suspend fails, then the recv_end will 3495 * likely also fail, and clean up after itself. 3496 */ 3497 end_err = dmu_recv_end(&drc); 3498 if (error == 0) 3499 error = zfs_resume_fs(zfsvfs, tofs); 3500 error = error ? error : end_err; 3501 VFS_RELE(zfsvfs->z_vfs); 3502 } else { 3503 error = dmu_recv_end(&drc); 3504 } 3505 } 3506 3507 zc->zc_cookie = off - fp->f_offset; 3508 if (VOP_SEEK(fp->f_vnode, fp->f_offset, &off, NULL) == 0) 3509 fp->f_offset = off; 3510 3511 #ifdef DEBUG 3512 if (zfs_ioc_recv_inject_err) { 3513 zfs_ioc_recv_inject_err = B_FALSE; 3514 error = 1; 3515 } 3516 #endif 3517 /* 3518 * On error, restore the original props. 3519 */ 3520 if (error && props) { 3521 if (dmu_objset_hold(tofs, FTAG, &os) == 0) { 3522 if (clear_received_props(os, tofs, props, NULL) != 0) { 3523 /* 3524 * We failed to clear the received properties. 3525 * Since we may have left a $recvd value on the 3526 * system, we can't clear the $hasrecvd flag. 3527 */ 3528 zc->zc_obj |= ZPROP_ERR_NORESTORE; 3529 } else if (first_recvd_props) { 3530 dsl_prop_unset_hasrecvd(os); 3531 } 3532 dmu_objset_rele(os, FTAG); 3533 } else if (!drc.drc_newfs) { 3534 /* We failed to clear the received properties. */ 3535 zc->zc_obj |= ZPROP_ERR_NORESTORE; 3536 } 3537 3538 if (origprops == NULL && !drc.drc_newfs) { 3539 /* We failed to stash the original properties. */ 3540 zc->zc_obj |= ZPROP_ERR_NORESTORE; 3541 } 3542 3543 /* 3544 * dsl_props_set() will not convert RECEIVED to LOCAL on or 3545 * after SPA_VERSION_RECVD_PROPS, so we need to specify LOCAL 3546 * explictly if we're restoring local properties cleared in the 3547 * first new-style receive. 3548 */ 3549 if (origprops != NULL && 3550 zfs_set_prop_nvlist(tofs, (first_recvd_props ? 3551 ZPROP_SRC_LOCAL : ZPROP_SRC_RECEIVED), 3552 origprops, NULL) != 0) { 3553 /* 3554 * We stashed the original properties but failed to 3555 * restore them. 3556 */ 3557 zc->zc_obj |= ZPROP_ERR_NORESTORE; 3558 } 3559 } 3560 out: 3561 nvlist_free(props); 3562 nvlist_free(origprops); 3563 nvlist_free(errors); 3564 releasef(fd); 3565 3566 if (error == 0) 3567 error = props_error; 3568 3569 return (error); 3570 } 3571 3572 /* 3573 * inputs: 3574 * zc_name name of snapshot to send 3575 * zc_value short name of incremental fromsnap (may be empty) 3576 * zc_cookie file descriptor to send stream to 3577 * zc_obj fromorigin flag (mutually exclusive with zc_value) 3578 * 3579 * outputs: none 3580 */ 3581 static int 3582 zfs_ioc_send(zfs_cmd_t *zc) 3583 { 3584 objset_t *fromsnap = NULL; 3585 objset_t *tosnap; 3586 file_t *fp; 3587 int error; 3588 offset_t off; 3589 3590 error = dmu_objset_hold(zc->zc_name, FTAG, &tosnap); 3591 if (error) 3592 return (error); 3593 3594 if (zc->zc_value[0] != '\0') { 3595 char *buf; 3596 char *cp; 3597 3598 buf = kmem_alloc(MAXPATHLEN, KM_SLEEP); 3599 (void) strncpy(buf, zc->zc_name, MAXPATHLEN); 3600 cp = strchr(buf, '@'); 3601 if (cp) 3602 *(cp+1) = 0; 3603 (void) strncat(buf, zc->zc_value, MAXPATHLEN); 3604 error = dmu_objset_hold(buf, FTAG, &fromsnap); 3605 kmem_free(buf, MAXPATHLEN); 3606 if (error) { 3607 dmu_objset_rele(tosnap, FTAG); 3608 return (error); 3609 } 3610 } 3611 3612 fp = getf(zc->zc_cookie); 3613 if (fp == NULL) { 3614 dmu_objset_rele(tosnap, FTAG); 3615 if (fromsnap) 3616 dmu_objset_rele(fromsnap, FTAG); 3617 return (EBADF); 3618 } 3619 3620 off = fp->f_offset; 3621 error = dmu_sendbackup(tosnap, fromsnap, zc->zc_obj, fp->f_vnode, &off); 3622 3623 if (VOP_SEEK(fp->f_vnode, fp->f_offset, &off, NULL) == 0) 3624 fp->f_offset = off; 3625 releasef(zc->zc_cookie); 3626 if (fromsnap) 3627 dmu_objset_rele(fromsnap, FTAG); 3628 dmu_objset_rele(tosnap, FTAG); 3629 return (error); 3630 } 3631 3632 static int 3633 zfs_ioc_inject_fault(zfs_cmd_t *zc) 3634 { 3635 int id, error; 3636 3637 error = zio_inject_fault(zc->zc_name, (int)zc->zc_guid, &id, 3638 &zc->zc_inject_record); 3639 3640 if (error == 0) 3641 zc->zc_guid = (uint64_t)id; 3642 3643 return (error); 3644 } 3645 3646 static int 3647 zfs_ioc_clear_fault(zfs_cmd_t *zc) 3648 { 3649 return (zio_clear_fault((int)zc->zc_guid)); 3650 } 3651 3652 static int 3653 zfs_ioc_inject_list_next(zfs_cmd_t *zc) 3654 { 3655 int id = (int)zc->zc_guid; 3656 int error; 3657 3658 error = zio_inject_list_next(&id, zc->zc_name, sizeof (zc->zc_name), 3659 &zc->zc_inject_record); 3660 3661 zc->zc_guid = id; 3662 3663 return (error); 3664 } 3665 3666 static int 3667 zfs_ioc_error_log(zfs_cmd_t *zc) 3668 { 3669 spa_t *spa; 3670 int error; 3671 size_t count = (size_t)zc->zc_nvlist_dst_size; 3672 3673 if ((error = spa_open(zc->zc_name, &spa, FTAG)) != 0) 3674 return (error); 3675 3676 error = spa_get_errlog(spa, (void *)(uintptr_t)zc->zc_nvlist_dst, 3677 &count); 3678 if (error == 0) 3679 zc->zc_nvlist_dst_size = count; 3680 else 3681 zc->zc_nvlist_dst_size = spa_get_errlog_size(spa); 3682 3683 spa_close(spa, FTAG); 3684 3685 return (error); 3686 } 3687 3688 static int 3689 zfs_ioc_clear(zfs_cmd_t *zc) 3690 { 3691 spa_t *spa; 3692 vdev_t *vd; 3693 int error; 3694 3695 /* 3696 * On zpool clear we also fix up missing slogs 3697 */ 3698 mutex_enter(&spa_namespace_lock); 3699 spa = spa_lookup(zc->zc_name); 3700 if (spa == NULL) { 3701 mutex_exit(&spa_namespace_lock); 3702 return (EIO); 3703 } 3704 if (spa_get_log_state(spa) == SPA_LOG_MISSING) { 3705 /* we need to let spa_open/spa_load clear the chains */ 3706 spa_set_log_state(spa, SPA_LOG_CLEAR); 3707 } 3708 spa->spa_last_open_failed = 0; 3709 mutex_exit(&spa_namespace_lock); 3710 3711 if (zc->zc_cookie & ZPOOL_NO_REWIND) { 3712 error = spa_open(zc->zc_name, &spa, FTAG); 3713 } else { 3714 nvlist_t *policy; 3715 nvlist_t *config = NULL; 3716 3717 if (zc->zc_nvlist_src == NULL) 3718 return (EINVAL); 3719 3720 if ((error = get_nvlist(zc->zc_nvlist_src, 3721 zc->zc_nvlist_src_size, zc->zc_iflags, &policy)) == 0) { 3722 error = spa_open_rewind(zc->zc_name, &spa, FTAG, 3723 policy, &config); 3724 if (config != NULL) { 3725 (void) put_nvlist(zc, config); 3726 nvlist_free(config); 3727 } 3728 nvlist_free(policy); 3729 } 3730 } 3731 3732 if (error) 3733 return (error); 3734 3735 spa_vdev_state_enter(spa, SCL_NONE); 3736 3737 if (zc->zc_guid == 0) { 3738 vd = NULL; 3739 } else { 3740 vd = spa_lookup_by_guid(spa, zc->zc_guid, B_TRUE); 3741 if (vd == NULL) { 3742 (void) spa_vdev_state_exit(spa, NULL, ENODEV); 3743 spa_close(spa, FTAG); 3744 return (ENODEV); 3745 } 3746 } 3747 3748 vdev_clear(spa, vd); 3749 3750 (void) spa_vdev_state_exit(spa, NULL, 0); 3751 3752 /* 3753 * Resume any suspended I/Os. 3754 */ 3755 if (zio_resume(spa) != 0) 3756 error = EIO; 3757 3758 spa_close(spa, FTAG); 3759 3760 return (error); 3761 } 3762 3763 /* 3764 * inputs: 3765 * zc_name name of filesystem 3766 * zc_value name of origin snapshot 3767 * 3768 * outputs: 3769 * zc_string name of conflicting snapshot, if there is one 3770 */ 3771 static int 3772 zfs_ioc_promote(zfs_cmd_t *zc) 3773 { 3774 char *cp; 3775 3776 /* 3777 * We don't need to unmount *all* the origin fs's snapshots, but 3778 * it's easier. 3779 */ 3780 cp = strchr(zc->zc_value, '@'); 3781 if (cp) 3782 *cp = '\0'; 3783 (void) dmu_objset_find(zc->zc_value, 3784 zfs_unmount_snap, NULL, DS_FIND_SNAPSHOTS); 3785 return (dsl_dataset_promote(zc->zc_name, zc->zc_string)); 3786 } 3787 3788 /* 3789 * Retrieve a single {user|group}{used|quota}@... property. 3790 * 3791 * inputs: 3792 * zc_name name of filesystem 3793 * zc_objset_type zfs_userquota_prop_t 3794 * zc_value domain name (eg. "S-1-234-567-89") 3795 * zc_guid RID/UID/GID 3796 * 3797 * outputs: 3798 * zc_cookie property value 3799 */ 3800 static int 3801 zfs_ioc_userspace_one(zfs_cmd_t *zc) 3802 { 3803 zfsvfs_t *zfsvfs; 3804 int error; 3805 3806 if (zc->zc_objset_type >= ZFS_NUM_USERQUOTA_PROPS) 3807 return (EINVAL); 3808 3809 error = zfsvfs_hold(zc->zc_name, FTAG, &zfsvfs); 3810 if (error) 3811 return (error); 3812 3813 error = zfs_userspace_one(zfsvfs, 3814 zc->zc_objset_type, zc->zc_value, zc->zc_guid, &zc->zc_cookie); 3815 zfsvfs_rele(zfsvfs, FTAG); 3816 3817 return (error); 3818 } 3819 3820 /* 3821 * inputs: 3822 * zc_name name of filesystem 3823 * zc_cookie zap cursor 3824 * zc_objset_type zfs_userquota_prop_t 3825 * zc_nvlist_dst[_size] buffer to fill (not really an nvlist) 3826 * 3827 * outputs: 3828 * zc_nvlist_dst[_size] data buffer (array of zfs_useracct_t) 3829 * zc_cookie zap cursor 3830 */ 3831 static int 3832 zfs_ioc_userspace_many(zfs_cmd_t *zc) 3833 { 3834 zfsvfs_t *zfsvfs; 3835 int bufsize = zc->zc_nvlist_dst_size; 3836 3837 if (bufsize <= 0) 3838 return (ENOMEM); 3839 3840 int error = zfsvfs_hold(zc->zc_name, FTAG, &zfsvfs); 3841 if (error) 3842 return (error); 3843 3844 void *buf = kmem_alloc(bufsize, KM_SLEEP); 3845 3846 error = zfs_userspace_many(zfsvfs, zc->zc_objset_type, &zc->zc_cookie, 3847 buf, &zc->zc_nvlist_dst_size); 3848 3849 if (error == 0) { 3850 error = xcopyout(buf, 3851 (void *)(uintptr_t)zc->zc_nvlist_dst, 3852 zc->zc_nvlist_dst_size); 3853 } 3854 kmem_free(buf, bufsize); 3855 zfsvfs_rele(zfsvfs, FTAG); 3856 3857 return (error); 3858 } 3859 3860 /* 3861 * inputs: 3862 * zc_name name of filesystem 3863 * 3864 * outputs: 3865 * none 3866 */ 3867 static int 3868 zfs_ioc_userspace_upgrade(zfs_cmd_t *zc) 3869 { 3870 objset_t *os; 3871 int error = 0; 3872 zfsvfs_t *zfsvfs; 3873 3874 if (getzfsvfs(zc->zc_name, &zfsvfs) == 0) { 3875 if (!dmu_objset_userused_enabled(zfsvfs->z_os)) { 3876 /* 3877 * If userused is not enabled, it may be because the 3878 * objset needs to be closed & reopened (to grow the 3879 * objset_phys_t). Suspend/resume the fs will do that. 3880 */ 3881 error = zfs_suspend_fs(zfsvfs); 3882 if (error == 0) 3883 error = zfs_resume_fs(zfsvfs, zc->zc_name); 3884 } 3885 if (error == 0) 3886 error = dmu_objset_userspace_upgrade(zfsvfs->z_os); 3887 VFS_RELE(zfsvfs->z_vfs); 3888 } else { 3889 /* XXX kind of reading contents without owning */ 3890 error = dmu_objset_hold(zc->zc_name, FTAG, &os); 3891 if (error) 3892 return (error); 3893 3894 error = dmu_objset_userspace_upgrade(os); 3895 dmu_objset_rele(os, FTAG); 3896 } 3897 3898 return (error); 3899 } 3900 3901 /* 3902 * We don't want to have a hard dependency 3903 * against some special symbols in sharefs 3904 * nfs, and smbsrv. Determine them if needed when 3905 * the first file system is shared. 3906 * Neither sharefs, nfs or smbsrv are unloadable modules. 3907 */ 3908 int (*znfsexport_fs)(void *arg); 3909 int (*zshare_fs)(enum sharefs_sys_op, share_t *, uint32_t); 3910 int (*zsmbexport_fs)(void *arg, boolean_t add_share); 3911 3912 int zfs_nfsshare_inited; 3913 int zfs_smbshare_inited; 3914 3915 ddi_modhandle_t nfs_mod; 3916 ddi_modhandle_t sharefs_mod; 3917 ddi_modhandle_t smbsrv_mod; 3918 kmutex_t zfs_share_lock; 3919 3920 static int 3921 zfs_init_sharefs() 3922 { 3923 int error; 3924 3925 ASSERT(MUTEX_HELD(&zfs_share_lock)); 3926 /* Both NFS and SMB shares also require sharetab support. */ 3927 if (sharefs_mod == NULL && ((sharefs_mod = 3928 ddi_modopen("fs/sharefs", 3929 KRTLD_MODE_FIRST, &error)) == NULL)) { 3930 return (ENOSYS); 3931 } 3932 if (zshare_fs == NULL && ((zshare_fs = 3933 (int (*)(enum sharefs_sys_op, share_t *, uint32_t)) 3934 ddi_modsym(sharefs_mod, "sharefs_impl", &error)) == NULL)) { 3935 return (ENOSYS); 3936 } 3937 return (0); 3938 } 3939 3940 static int 3941 zfs_ioc_share(zfs_cmd_t *zc) 3942 { 3943 int error; 3944 int opcode; 3945 3946 switch (zc->zc_share.z_sharetype) { 3947 case ZFS_SHARE_NFS: 3948 case ZFS_UNSHARE_NFS: 3949 if (zfs_nfsshare_inited == 0) { 3950 mutex_enter(&zfs_share_lock); 3951 if (nfs_mod == NULL && ((nfs_mod = ddi_modopen("fs/nfs", 3952 KRTLD_MODE_FIRST, &error)) == NULL)) { 3953 mutex_exit(&zfs_share_lock); 3954 return (ENOSYS); 3955 } 3956 if (znfsexport_fs == NULL && 3957 ((znfsexport_fs = (int (*)(void *)) 3958 ddi_modsym(nfs_mod, 3959 "nfs_export", &error)) == NULL)) { 3960 mutex_exit(&zfs_share_lock); 3961 return (ENOSYS); 3962 } 3963 error = zfs_init_sharefs(); 3964 if (error) { 3965 mutex_exit(&zfs_share_lock); 3966 return (ENOSYS); 3967 } 3968 zfs_nfsshare_inited = 1; 3969 mutex_exit(&zfs_share_lock); 3970 } 3971 break; 3972 case ZFS_SHARE_SMB: 3973 case ZFS_UNSHARE_SMB: 3974 if (zfs_smbshare_inited == 0) { 3975 mutex_enter(&zfs_share_lock); 3976 if (smbsrv_mod == NULL && ((smbsrv_mod = 3977 ddi_modopen("drv/smbsrv", 3978 KRTLD_MODE_FIRST, &error)) == NULL)) { 3979 mutex_exit(&zfs_share_lock); 3980 return (ENOSYS); 3981 } 3982 if (zsmbexport_fs == NULL && ((zsmbexport_fs = 3983 (int (*)(void *, boolean_t))ddi_modsym(smbsrv_mod, 3984 "smb_server_share", &error)) == NULL)) { 3985 mutex_exit(&zfs_share_lock); 3986 return (ENOSYS); 3987 } 3988 error = zfs_init_sharefs(); 3989 if (error) { 3990 mutex_exit(&zfs_share_lock); 3991 return (ENOSYS); 3992 } 3993 zfs_smbshare_inited = 1; 3994 mutex_exit(&zfs_share_lock); 3995 } 3996 break; 3997 default: 3998 return (EINVAL); 3999 } 4000 4001 switch (zc->zc_share.z_sharetype) { 4002 case ZFS_SHARE_NFS: 4003 case ZFS_UNSHARE_NFS: 4004 if (error = 4005 znfsexport_fs((void *) 4006 (uintptr_t)zc->zc_share.z_exportdata)) 4007 return (error); 4008 break; 4009 case ZFS_SHARE_SMB: 4010 case ZFS_UNSHARE_SMB: 4011 if (error = zsmbexport_fs((void *) 4012 (uintptr_t)zc->zc_share.z_exportdata, 4013 zc->zc_share.z_sharetype == ZFS_SHARE_SMB ? 4014 B_TRUE: B_FALSE)) { 4015 return (error); 4016 } 4017 break; 4018 } 4019 4020 opcode = (zc->zc_share.z_sharetype == ZFS_SHARE_NFS || 4021 zc->zc_share.z_sharetype == ZFS_SHARE_SMB) ? 4022 SHAREFS_ADD : SHAREFS_REMOVE; 4023 4024 /* 4025 * Add or remove share from sharetab 4026 */ 4027 error = zshare_fs(opcode, 4028 (void *)(uintptr_t)zc->zc_share.z_sharedata, 4029 zc->zc_share.z_sharemax); 4030 4031 return (error); 4032 4033 } 4034 4035 ace_t full_access[] = { 4036 {(uid_t)-1, ACE_ALL_PERMS, ACE_EVERYONE, 0} 4037 }; 4038 4039 /* 4040 * Remove all ACL files in shares dir 4041 */ 4042 static int 4043 zfs_smb_acl_purge(znode_t *dzp) 4044 { 4045 zap_cursor_t zc; 4046 zap_attribute_t zap; 4047 zfsvfs_t *zfsvfs = dzp->z_zfsvfs; 4048 int error; 4049 4050 for (zap_cursor_init(&zc, zfsvfs->z_os, dzp->z_id); 4051 (error = zap_cursor_retrieve(&zc, &zap)) == 0; 4052 zap_cursor_advance(&zc)) { 4053 if ((error = VOP_REMOVE(ZTOV(dzp), zap.za_name, kcred, 4054 NULL, 0)) != 0) 4055 break; 4056 } 4057 zap_cursor_fini(&zc); 4058 return (error); 4059 } 4060 4061 static int 4062 zfs_ioc_smb_acl(zfs_cmd_t *zc) 4063 { 4064 vnode_t *vp; 4065 znode_t *dzp; 4066 vnode_t *resourcevp = NULL; 4067 znode_t *sharedir; 4068 zfsvfs_t *zfsvfs; 4069 nvlist_t *nvlist; 4070 char *src, *target; 4071 vattr_t vattr; 4072 vsecattr_t vsec; 4073 int error = 0; 4074 4075 if ((error = lookupname(zc->zc_value, UIO_SYSSPACE, 4076 NO_FOLLOW, NULL, &vp)) != 0) 4077 return (error); 4078 4079 /* Now make sure mntpnt and dataset are ZFS */ 4080 4081 if (vp->v_vfsp->vfs_fstype != zfsfstype || 4082 (strcmp((char *)refstr_value(vp->v_vfsp->vfs_resource), 4083 zc->zc_name) != 0)) { 4084 VN_RELE(vp); 4085 return (EINVAL); 4086 } 4087 4088 dzp = VTOZ(vp); 4089 zfsvfs = dzp->z_zfsvfs; 4090 ZFS_ENTER(zfsvfs); 4091 4092 /* 4093 * Create share dir if its missing. 4094 */ 4095 mutex_enter(&zfsvfs->z_lock); 4096 if (zfsvfs->z_shares_dir == 0) { 4097 dmu_tx_t *tx; 4098 4099 tx = dmu_tx_create(zfsvfs->z_os); 4100 dmu_tx_hold_zap(tx, MASTER_NODE_OBJ, TRUE, 4101 ZFS_SHARES_DIR); 4102 dmu_tx_hold_zap(tx, DMU_NEW_OBJECT, FALSE, NULL); 4103 error = dmu_tx_assign(tx, TXG_WAIT); 4104 if (error) { 4105 dmu_tx_abort(tx); 4106 } else { 4107 error = zfs_create_share_dir(zfsvfs, tx); 4108 dmu_tx_commit(tx); 4109 } 4110 if (error) { 4111 mutex_exit(&zfsvfs->z_lock); 4112 VN_RELE(vp); 4113 ZFS_EXIT(zfsvfs); 4114 return (error); 4115 } 4116 } 4117 mutex_exit(&zfsvfs->z_lock); 4118 4119 ASSERT(zfsvfs->z_shares_dir); 4120 if ((error = zfs_zget(zfsvfs, zfsvfs->z_shares_dir, &sharedir)) != 0) { 4121 VN_RELE(vp); 4122 ZFS_EXIT(zfsvfs); 4123 return (error); 4124 } 4125 4126 switch (zc->zc_cookie) { 4127 case ZFS_SMB_ACL_ADD: 4128 vattr.va_mask = AT_MODE|AT_UID|AT_GID|AT_TYPE; 4129 vattr.va_type = VREG; 4130 vattr.va_mode = S_IFREG|0777; 4131 vattr.va_uid = 0; 4132 vattr.va_gid = 0; 4133 4134 vsec.vsa_mask = VSA_ACE; 4135 vsec.vsa_aclentp = &full_access; 4136 vsec.vsa_aclentsz = sizeof (full_access); 4137 vsec.vsa_aclcnt = 1; 4138 4139 error = VOP_CREATE(ZTOV(sharedir), zc->zc_string, 4140 &vattr, EXCL, 0, &resourcevp, kcred, 0, NULL, &vsec); 4141 if (resourcevp) 4142 VN_RELE(resourcevp); 4143 break; 4144 4145 case ZFS_SMB_ACL_REMOVE: 4146 error = VOP_REMOVE(ZTOV(sharedir), zc->zc_string, kcred, 4147 NULL, 0); 4148 break; 4149 4150 case ZFS_SMB_ACL_RENAME: 4151 if ((error = get_nvlist(zc->zc_nvlist_src, 4152 zc->zc_nvlist_src_size, zc->zc_iflags, &nvlist)) != 0) { 4153 VN_RELE(vp); 4154 ZFS_EXIT(zfsvfs); 4155 return (error); 4156 } 4157 if (nvlist_lookup_string(nvlist, ZFS_SMB_ACL_SRC, &src) || 4158 nvlist_lookup_string(nvlist, ZFS_SMB_ACL_TARGET, 4159 &target)) { 4160 VN_RELE(vp); 4161 VN_RELE(ZTOV(sharedir)); 4162 ZFS_EXIT(zfsvfs); 4163 nvlist_free(nvlist); 4164 return (error); 4165 } 4166 error = VOP_RENAME(ZTOV(sharedir), src, ZTOV(sharedir), target, 4167 kcred, NULL, 0); 4168 nvlist_free(nvlist); 4169 break; 4170 4171 case ZFS_SMB_ACL_PURGE: 4172 error = zfs_smb_acl_purge(sharedir); 4173 break; 4174 4175 default: 4176 error = EINVAL; 4177 break; 4178 } 4179 4180 VN_RELE(vp); 4181 VN_RELE(ZTOV(sharedir)); 4182 4183 ZFS_EXIT(zfsvfs); 4184 4185 return (error); 4186 } 4187 4188 /* 4189 * inputs: 4190 * zc_name name of filesystem 4191 * zc_value short name of snap 4192 * zc_string user-supplied tag for this hold 4193 * zc_cookie recursive flag 4194 * zc_temphold set if hold is temporary 4195 * zc_cleanup_fd cleanup-on-exit file descriptor for calling process 4196 * 4197 * outputs: none 4198 */ 4199 static int 4200 zfs_ioc_hold(zfs_cmd_t *zc) 4201 { 4202 boolean_t recursive = zc->zc_cookie; 4203 4204 if (snapshot_namecheck(zc->zc_value, NULL, NULL) != 0) 4205 return (EINVAL); 4206 4207 return (dsl_dataset_user_hold(zc->zc_name, zc->zc_value, 4208 zc->zc_string, recursive, zc->zc_temphold, zc->zc_cleanup_fd)); 4209 } 4210 4211 /* 4212 * inputs: 4213 * zc_name name of dataset from which we're releasing a user hold 4214 * zc_value short name of snap 4215 * zc_string user-supplied tag for this hold 4216 * zc_cookie recursive flag 4217 * 4218 * outputs: none 4219 */ 4220 static int 4221 zfs_ioc_release(zfs_cmd_t *zc) 4222 { 4223 boolean_t recursive = zc->zc_cookie; 4224 4225 if (snapshot_namecheck(zc->zc_value, NULL, NULL) != 0) 4226 return (EINVAL); 4227 4228 return (dsl_dataset_user_release(zc->zc_name, zc->zc_value, 4229 zc->zc_string, recursive)); 4230 } 4231 4232 /* 4233 * inputs: 4234 * zc_name name of filesystem 4235 * 4236 * outputs: 4237 * zc_nvlist_src{_size} nvlist of snapshot holds 4238 */ 4239 static int 4240 zfs_ioc_get_holds(zfs_cmd_t *zc) 4241 { 4242 nvlist_t *nvp; 4243 int error; 4244 4245 if ((error = dsl_dataset_get_holds(zc->zc_name, &nvp)) == 0) { 4246 error = put_nvlist(zc, nvp); 4247 nvlist_free(nvp); 4248 } 4249 4250 return (error); 4251 } 4252 4253 /* 4254 * pool create, destroy, and export don't log the history as part of 4255 * zfsdev_ioctl, but rather zfs_ioc_pool_create, and zfs_ioc_pool_export 4256 * do the logging of those commands. 4257 */ 4258 static zfs_ioc_vec_t zfs_ioc_vec[] = { 4259 { zfs_ioc_pool_create, zfs_secpolicy_config, POOL_NAME, B_FALSE, 4260 B_FALSE }, 4261 { zfs_ioc_pool_destroy, zfs_secpolicy_config, POOL_NAME, B_FALSE, 4262 B_FALSE }, 4263 { zfs_ioc_pool_import, zfs_secpolicy_config, POOL_NAME, B_TRUE, 4264 B_FALSE }, 4265 { zfs_ioc_pool_export, zfs_secpolicy_config, POOL_NAME, B_FALSE, 4266 B_FALSE }, 4267 { zfs_ioc_pool_configs, zfs_secpolicy_none, NO_NAME, B_FALSE, 4268 B_FALSE }, 4269 { zfs_ioc_pool_stats, zfs_secpolicy_read, POOL_NAME, B_FALSE, 4270 B_FALSE }, 4271 { zfs_ioc_pool_tryimport, zfs_secpolicy_config, NO_NAME, B_FALSE, 4272 B_FALSE }, 4273 { zfs_ioc_pool_scan, zfs_secpolicy_config, POOL_NAME, B_TRUE, 4274 B_TRUE }, 4275 { zfs_ioc_pool_freeze, zfs_secpolicy_config, NO_NAME, B_FALSE, 4276 B_FALSE }, 4277 { zfs_ioc_pool_upgrade, zfs_secpolicy_config, POOL_NAME, B_TRUE, 4278 B_TRUE }, 4279 { zfs_ioc_pool_get_history, zfs_secpolicy_config, POOL_NAME, B_FALSE, 4280 B_FALSE }, 4281 { zfs_ioc_vdev_add, zfs_secpolicy_config, POOL_NAME, B_TRUE, 4282 B_TRUE }, 4283 { zfs_ioc_vdev_remove, zfs_secpolicy_config, POOL_NAME, B_TRUE, 4284 B_TRUE }, 4285 { zfs_ioc_vdev_set_state, zfs_secpolicy_config, POOL_NAME, B_TRUE, 4286 B_FALSE }, 4287 { zfs_ioc_vdev_attach, zfs_secpolicy_config, POOL_NAME, B_TRUE, 4288 B_TRUE }, 4289 { zfs_ioc_vdev_detach, zfs_secpolicy_config, POOL_NAME, B_TRUE, 4290 B_TRUE }, 4291 { zfs_ioc_vdev_setpath, zfs_secpolicy_config, POOL_NAME, B_FALSE, 4292 B_TRUE }, 4293 { zfs_ioc_vdev_setfru, zfs_secpolicy_config, POOL_NAME, B_FALSE, 4294 B_TRUE }, 4295 { zfs_ioc_objset_stats, zfs_secpolicy_read, DATASET_NAME, B_FALSE, 4296 B_TRUE }, 4297 { zfs_ioc_objset_zplprops, zfs_secpolicy_read, DATASET_NAME, B_FALSE, 4298 B_FALSE }, 4299 { zfs_ioc_dataset_list_next, zfs_secpolicy_read, DATASET_NAME, B_FALSE, 4300 B_TRUE }, 4301 { zfs_ioc_snapshot_list_next, zfs_secpolicy_read, DATASET_NAME, B_FALSE, 4302 B_TRUE }, 4303 { zfs_ioc_set_prop, zfs_secpolicy_none, DATASET_NAME, B_TRUE, B_TRUE }, 4304 { zfs_ioc_create, zfs_secpolicy_create, DATASET_NAME, B_TRUE, B_TRUE }, 4305 { zfs_ioc_destroy, zfs_secpolicy_destroy, DATASET_NAME, B_TRUE, 4306 B_TRUE}, 4307 { zfs_ioc_rollback, zfs_secpolicy_rollback, DATASET_NAME, B_TRUE, 4308 B_TRUE }, 4309 { zfs_ioc_rename, zfs_secpolicy_rename, DATASET_NAME, B_TRUE, B_TRUE }, 4310 { zfs_ioc_recv, zfs_secpolicy_receive, DATASET_NAME, B_TRUE, B_TRUE }, 4311 { zfs_ioc_send, zfs_secpolicy_send, DATASET_NAME, B_TRUE, B_FALSE }, 4312 { zfs_ioc_inject_fault, zfs_secpolicy_inject, NO_NAME, B_FALSE, 4313 B_FALSE }, 4314 { zfs_ioc_clear_fault, zfs_secpolicy_inject, NO_NAME, B_FALSE, 4315 B_FALSE }, 4316 { zfs_ioc_inject_list_next, zfs_secpolicy_inject, NO_NAME, B_FALSE, 4317 B_FALSE }, 4318 { zfs_ioc_error_log, zfs_secpolicy_inject, POOL_NAME, B_FALSE, 4319 B_FALSE }, 4320 { zfs_ioc_clear, zfs_secpolicy_config, POOL_NAME, B_TRUE, B_FALSE }, 4321 { zfs_ioc_promote, zfs_secpolicy_promote, DATASET_NAME, B_TRUE, 4322 B_TRUE }, 4323 { zfs_ioc_destroy_snaps, zfs_secpolicy_destroy_snaps, DATASET_NAME, 4324 B_TRUE, B_TRUE }, 4325 { zfs_ioc_snapshot, zfs_secpolicy_snapshot, DATASET_NAME, B_TRUE, 4326 B_TRUE }, 4327 { zfs_ioc_dsobj_to_dsname, zfs_secpolicy_config, POOL_NAME, B_FALSE, 4328 B_FALSE }, 4329 { zfs_ioc_obj_to_path, zfs_secpolicy_config, DATASET_NAME, B_FALSE, 4330 B_TRUE }, 4331 { zfs_ioc_pool_set_props, zfs_secpolicy_config, POOL_NAME, B_TRUE, 4332 B_TRUE }, 4333 { zfs_ioc_pool_get_props, zfs_secpolicy_read, POOL_NAME, B_FALSE, 4334 B_FALSE }, 4335 { zfs_ioc_set_fsacl, zfs_secpolicy_fsacl, DATASET_NAME, B_TRUE, 4336 B_TRUE }, 4337 { zfs_ioc_get_fsacl, zfs_secpolicy_read, DATASET_NAME, B_FALSE, 4338 B_FALSE }, 4339 { zfs_ioc_share, zfs_secpolicy_share, DATASET_NAME, B_FALSE, B_FALSE }, 4340 { zfs_ioc_inherit_prop, zfs_secpolicy_inherit, DATASET_NAME, B_TRUE, 4341 B_TRUE }, 4342 { zfs_ioc_smb_acl, zfs_secpolicy_smb_acl, DATASET_NAME, B_FALSE, 4343 B_FALSE }, 4344 { zfs_ioc_userspace_one, zfs_secpolicy_userspace_one, 4345 DATASET_NAME, B_FALSE, B_FALSE }, 4346 { zfs_ioc_userspace_many, zfs_secpolicy_userspace_many, 4347 DATASET_NAME, B_FALSE, B_FALSE }, 4348 { zfs_ioc_userspace_upgrade, zfs_secpolicy_userspace_upgrade, 4349 DATASET_NAME, B_FALSE, B_TRUE }, 4350 { zfs_ioc_hold, zfs_secpolicy_hold, DATASET_NAME, B_TRUE, B_TRUE }, 4351 { zfs_ioc_release, zfs_secpolicy_release, DATASET_NAME, B_TRUE, 4352 B_TRUE }, 4353 { zfs_ioc_get_holds, zfs_secpolicy_read, DATASET_NAME, B_FALSE, 4354 B_TRUE }, 4355 { zfs_ioc_objset_recvd_props, zfs_secpolicy_read, DATASET_NAME, B_FALSE, 4356 B_FALSE }, 4357 { zfs_ioc_vdev_split, zfs_secpolicy_config, POOL_NAME, B_TRUE, 4358 B_TRUE } 4359 }; 4360 4361 int 4362 pool_status_check(const char *name, zfs_ioc_namecheck_t type) 4363 { 4364 spa_t *spa; 4365 int error; 4366 4367 ASSERT(type == POOL_NAME || type == DATASET_NAME); 4368 4369 error = spa_open(name, &spa, FTAG); 4370 if (error == 0) { 4371 if (spa_suspended(spa)) 4372 error = EAGAIN; 4373 spa_close(spa, FTAG); 4374 } 4375 return (error); 4376 } 4377 4378 /* 4379 * Find a free minor number. 4380 */ 4381 minor_t 4382 zfsdev_minor_alloc(void) 4383 { 4384 static minor_t last_minor; 4385 minor_t m; 4386 4387 ASSERT(MUTEX_HELD(&zfsdev_state_lock)); 4388 4389 for (m = last_minor + 1; m != last_minor; m++) { 4390 if (m > ZFSDEV_MAX_MINOR) 4391 m = 1; 4392 if (ddi_get_soft_state(zfsdev_state, m) == NULL) { 4393 last_minor = m; 4394 return (m); 4395 } 4396 } 4397 4398 return (0); 4399 } 4400 4401 static int 4402 zfs_ctldev_init(dev_t *devp) 4403 { 4404 minor_t minor; 4405 zfs_soft_state_t *zs; 4406 4407 ASSERT(MUTEX_HELD(&zfsdev_state_lock)); 4408 ASSERT(getminor(*devp) == 0); 4409 4410 minor = zfsdev_minor_alloc(); 4411 if (minor == 0) 4412 return (ENXIO); 4413 4414 if (ddi_soft_state_zalloc(zfsdev_state, minor) != DDI_SUCCESS) 4415 return (EAGAIN); 4416 4417 *devp = makedevice(getemajor(*devp), minor); 4418 4419 zs = ddi_get_soft_state(zfsdev_state, minor); 4420 zs->zss_type = ZSST_CTLDEV; 4421 zfs_onexit_init((zfs_onexit_t **)&zs->zss_data); 4422 4423 return (0); 4424 } 4425 4426 static void 4427 zfs_ctldev_destroy(zfs_onexit_t *zo, minor_t minor) 4428 { 4429 ASSERT(MUTEX_HELD(&zfsdev_state_lock)); 4430 4431 zfs_onexit_destroy(zo); 4432 ddi_soft_state_free(zfsdev_state, minor); 4433 } 4434 4435 void * 4436 zfsdev_get_soft_state(minor_t minor, enum zfs_soft_state_type which) 4437 { 4438 zfs_soft_state_t *zp; 4439 4440 zp = ddi_get_soft_state(zfsdev_state, minor); 4441 if (zp == NULL || zp->zss_type != which) 4442 return (NULL); 4443 4444 return (zp->zss_data); 4445 } 4446 4447 static int 4448 zfsdev_open(dev_t *devp, int flag, int otyp, cred_t *cr) 4449 { 4450 int error = 0; 4451 4452 if (getminor(*devp) != 0) 4453 return (zvol_open(devp, flag, otyp, cr)); 4454 4455 /* This is the control device. Allocate a new minor if requested. */ 4456 if (flag & FEXCL) { 4457 mutex_enter(&zfsdev_state_lock); 4458 error = zfs_ctldev_init(devp); 4459 mutex_exit(&zfsdev_state_lock); 4460 } 4461 4462 return (error); 4463 } 4464 4465 static int 4466 zfsdev_close(dev_t dev, int flag, int otyp, cred_t *cr) 4467 { 4468 zfs_onexit_t *zo; 4469 minor_t minor = getminor(dev); 4470 4471 if (minor == 0) 4472 return (0); 4473 4474 mutex_enter(&zfsdev_state_lock); 4475 zo = zfsdev_get_soft_state(minor, ZSST_CTLDEV); 4476 if (zo == NULL) { 4477 mutex_exit(&zfsdev_state_lock); 4478 return (zvol_close(dev, flag, otyp, cr)); 4479 } 4480 zfs_ctldev_destroy(zo, minor); 4481 mutex_exit(&zfsdev_state_lock); 4482 4483 return (0); 4484 } 4485 4486 static int 4487 zfsdev_ioctl(dev_t dev, int cmd, intptr_t arg, int flag, cred_t *cr, int *rvalp) 4488 { 4489 zfs_cmd_t *zc; 4490 uint_t vec; 4491 int error, rc; 4492 minor_t minor = getminor(dev); 4493 4494 if (minor != 0 && 4495 zfsdev_get_soft_state(minor, ZSST_CTLDEV) == NULL) 4496 return (zvol_ioctl(dev, cmd, arg, flag, cr, rvalp)); 4497 4498 vec = cmd - ZFS_IOC; 4499 ASSERT3U(getmajor(dev), ==, ddi_driver_major(zfs_dip)); 4500 4501 if (vec >= sizeof (zfs_ioc_vec) / sizeof (zfs_ioc_vec[0])) 4502 return (EINVAL); 4503 4504 zc = kmem_zalloc(sizeof (zfs_cmd_t), KM_SLEEP); 4505 4506 error = ddi_copyin((void *)arg, zc, sizeof (zfs_cmd_t), flag); 4507 if (error != 0) 4508 error = EFAULT; 4509 4510 if ((error == 0) && !(flag & FKIOCTL)) 4511 error = zfs_ioc_vec[vec].zvec_secpolicy(zc, cr); 4512 4513 /* 4514 * Ensure that all pool/dataset names are valid before we pass down to 4515 * the lower layers. 4516 */ 4517 if (error == 0) { 4518 zc->zc_name[sizeof (zc->zc_name) - 1] = '\0'; 4519 zc->zc_iflags = flag & FKIOCTL; 4520 switch (zfs_ioc_vec[vec].zvec_namecheck) { 4521 case POOL_NAME: 4522 if (pool_namecheck(zc->zc_name, NULL, NULL) != 0) 4523 error = EINVAL; 4524 if (zfs_ioc_vec[vec].zvec_pool_check) 4525 error = pool_status_check(zc->zc_name, 4526 zfs_ioc_vec[vec].zvec_namecheck); 4527 break; 4528 4529 case DATASET_NAME: 4530 if (dataset_namecheck(zc->zc_name, NULL, NULL) != 0) 4531 error = EINVAL; 4532 if (zfs_ioc_vec[vec].zvec_pool_check) 4533 error = pool_status_check(zc->zc_name, 4534 zfs_ioc_vec[vec].zvec_namecheck); 4535 break; 4536 4537 case NO_NAME: 4538 break; 4539 } 4540 } 4541 4542 if (error == 0) 4543 error = zfs_ioc_vec[vec].zvec_func(zc); 4544 4545 rc = ddi_copyout(zc, (void *)arg, sizeof (zfs_cmd_t), flag); 4546 if (error == 0) { 4547 if (rc != 0) 4548 error = EFAULT; 4549 if (zfs_ioc_vec[vec].zvec_his_log) 4550 zfs_log_history(zc); 4551 } 4552 4553 kmem_free(zc, sizeof (zfs_cmd_t)); 4554 return (error); 4555 } 4556 4557 static int 4558 zfs_attach(dev_info_t *dip, ddi_attach_cmd_t cmd) 4559 { 4560 if (cmd != DDI_ATTACH) 4561 return (DDI_FAILURE); 4562 4563 if (ddi_create_minor_node(dip, "zfs", S_IFCHR, 0, 4564 DDI_PSEUDO, 0) == DDI_FAILURE) 4565 return (DDI_FAILURE); 4566 4567 zfs_dip = dip; 4568 4569 ddi_report_dev(dip); 4570 4571 return (DDI_SUCCESS); 4572 } 4573 4574 static int 4575 zfs_detach(dev_info_t *dip, ddi_detach_cmd_t cmd) 4576 { 4577 if (spa_busy() || zfs_busy() || zvol_busy()) 4578 return (DDI_FAILURE); 4579 4580 if (cmd != DDI_DETACH) 4581 return (DDI_FAILURE); 4582 4583 zfs_dip = NULL; 4584 4585 ddi_prop_remove_all(dip); 4586 ddi_remove_minor_node(dip, NULL); 4587 4588 return (DDI_SUCCESS); 4589 } 4590 4591 /*ARGSUSED*/ 4592 static int 4593 zfs_info(dev_info_t *dip, ddi_info_cmd_t infocmd, void *arg, void **result) 4594 { 4595 switch (infocmd) { 4596 case DDI_INFO_DEVT2DEVINFO: 4597 *result = zfs_dip; 4598 return (DDI_SUCCESS); 4599 4600 case DDI_INFO_DEVT2INSTANCE: 4601 *result = (void *)0; 4602 return (DDI_SUCCESS); 4603 } 4604 4605 return (DDI_FAILURE); 4606 } 4607 4608 /* 4609 * OK, so this is a little weird. 4610 * 4611 * /dev/zfs is the control node, i.e. minor 0. 4612 * /dev/zvol/[r]dsk/pool/dataset are the zvols, minor > 0. 4613 * 4614 * /dev/zfs has basically nothing to do except serve up ioctls, 4615 * so most of the standard driver entry points are in zvol.c. 4616 */ 4617 static struct cb_ops zfs_cb_ops = { 4618 zfsdev_open, /* open */ 4619 zfsdev_close, /* close */ 4620 zvol_strategy, /* strategy */ 4621 nodev, /* print */ 4622 zvol_dump, /* dump */ 4623 zvol_read, /* read */ 4624 zvol_write, /* write */ 4625 zfsdev_ioctl, /* ioctl */ 4626 nodev, /* devmap */ 4627 nodev, /* mmap */ 4628 nodev, /* segmap */ 4629 nochpoll, /* poll */ 4630 ddi_prop_op, /* prop_op */ 4631 NULL, /* streamtab */ 4632 D_NEW | D_MP | D_64BIT, /* Driver compatibility flag */ 4633 CB_REV, /* version */ 4634 nodev, /* async read */ 4635 nodev, /* async write */ 4636 }; 4637 4638 static struct dev_ops zfs_dev_ops = { 4639 DEVO_REV, /* version */ 4640 0, /* refcnt */ 4641 zfs_info, /* info */ 4642 nulldev, /* identify */ 4643 nulldev, /* probe */ 4644 zfs_attach, /* attach */ 4645 zfs_detach, /* detach */ 4646 nodev, /* reset */ 4647 &zfs_cb_ops, /* driver operations */ 4648 NULL, /* no bus operations */ 4649 NULL, /* power */ 4650 ddi_quiesce_not_needed, /* quiesce */ 4651 }; 4652 4653 static struct modldrv zfs_modldrv = { 4654 &mod_driverops, 4655 "ZFS storage pool", 4656 &zfs_dev_ops 4657 }; 4658 4659 static struct modlinkage modlinkage = { 4660 MODREV_1, 4661 (void *)&zfs_modlfs, 4662 (void *)&zfs_modldrv, 4663 NULL 4664 }; 4665 4666 4667 uint_t zfs_fsyncer_key; 4668 extern uint_t rrw_tsd_key; 4669 4670 int 4671 _init(void) 4672 { 4673 int error; 4674 4675 spa_init(FREAD | FWRITE); 4676 zfs_init(); 4677 zvol_init(); 4678 4679 if ((error = mod_install(&modlinkage)) != 0) { 4680 zvol_fini(); 4681 zfs_fini(); 4682 spa_fini(); 4683 return (error); 4684 } 4685 4686 tsd_create(&zfs_fsyncer_key, NULL); 4687 tsd_create(&rrw_tsd_key, NULL); 4688 4689 error = ldi_ident_from_mod(&modlinkage, &zfs_li); 4690 ASSERT(error == 0); 4691 mutex_init(&zfs_share_lock, NULL, MUTEX_DEFAULT, NULL); 4692 4693 return (0); 4694 } 4695 4696 int 4697 _fini(void) 4698 { 4699 int error; 4700 4701 if (spa_busy() || zfs_busy() || zvol_busy() || zio_injection_enabled) 4702 return (EBUSY); 4703 4704 if ((error = mod_remove(&modlinkage)) != 0) 4705 return (error); 4706 4707 zvol_fini(); 4708 zfs_fini(); 4709 spa_fini(); 4710 if (zfs_nfsshare_inited) 4711 (void) ddi_modclose(nfs_mod); 4712 if (zfs_smbshare_inited) 4713 (void) ddi_modclose(smbsrv_mod); 4714 if (zfs_nfsshare_inited || zfs_smbshare_inited) 4715 (void) ddi_modclose(sharefs_mod); 4716 4717 tsd_destroy(&zfs_fsyncer_key); 4718 ldi_ident_release(zfs_li); 4719 zfs_li = NULL; 4720 mutex_destroy(&zfs_share_lock); 4721 4722 return (error); 4723 } 4724 4725 int 4726 _info(struct modinfo *modinfop) 4727 { 4728 return (mod_info(&modlinkage, modinfop)); 4729 } 4730