1 /* 2 * CDDL HEADER START 3 * 4 * The contents of this file are subject to the terms of the 5 * Common Development and Distribution License (the "License"). 6 * You may not use this file except in compliance with the License. 7 * 8 * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE 9 * or http://www.opensolaris.org/os/licensing. 10 * See the License for the specific language governing permissions 11 * and limitations under the License. 12 * 13 * When distributing Covered Code, include this CDDL HEADER in each 14 * file and include the License file at usr/src/OPENSOLARIS.LICENSE. 15 * If applicable, add the following below this CDDL HEADER, with the 16 * fields enclosed by brackets "[]" replaced with your own identifying 17 * information: Portions Copyright [yyyy] [name of copyright owner] 18 * 19 * CDDL HEADER END 20 */ 21 /* 22 * Copyright 2010 Sun Microsystems, Inc. All rights reserved. 23 * Use is subject to license terms. 24 */ 25 26 #include <sys/types.h> 27 #include <sys/param.h> 28 #include <sys/errno.h> 29 #include <sys/uio.h> 30 #include <sys/buf.h> 31 #include <sys/modctl.h> 32 #include <sys/open.h> 33 #include <sys/file.h> 34 #include <sys/kmem.h> 35 #include <sys/conf.h> 36 #include <sys/cmn_err.h> 37 #include <sys/stat.h> 38 #include <sys/zfs_ioctl.h> 39 #include <sys/zfs_vfsops.h> 40 #include <sys/zfs_znode.h> 41 #include <sys/zap.h> 42 #include <sys/spa.h> 43 #include <sys/spa_impl.h> 44 #include <sys/vdev.h> 45 #include <sys/priv_impl.h> 46 #include <sys/dmu.h> 47 #include <sys/dsl_dir.h> 48 #include <sys/dsl_dataset.h> 49 #include <sys/dsl_prop.h> 50 #include <sys/dsl_deleg.h> 51 #include <sys/dmu_objset.h> 52 #include <sys/ddi.h> 53 #include <sys/sunddi.h> 54 #include <sys/sunldi.h> 55 #include <sys/policy.h> 56 #include <sys/zone.h> 57 #include <sys/nvpair.h> 58 #include <sys/pathname.h> 59 #include <sys/mount.h> 60 #include <sys/sdt.h> 61 #include <sys/fs/zfs.h> 62 #include <sys/zfs_ctldir.h> 63 #include <sys/zfs_dir.h> 64 #include <sys/zvol.h> 65 #include <sharefs/share.h> 66 #include <sys/dmu_objset.h> 67 68 #include "zfs_namecheck.h" 69 #include "zfs_prop.h" 70 #include "zfs_deleg.h" 71 72 extern struct modlfs zfs_modlfs; 73 74 extern void zfs_init(void); 75 extern void zfs_fini(void); 76 77 ldi_ident_t zfs_li = NULL; 78 dev_info_t *zfs_dip; 79 80 typedef int zfs_ioc_func_t(zfs_cmd_t *); 81 typedef int zfs_secpolicy_func_t(zfs_cmd_t *, cred_t *); 82 83 typedef enum { 84 NO_NAME, 85 POOL_NAME, 86 DATASET_NAME 87 } zfs_ioc_namecheck_t; 88 89 typedef struct zfs_ioc_vec { 90 zfs_ioc_func_t *zvec_func; 91 zfs_secpolicy_func_t *zvec_secpolicy; 92 zfs_ioc_namecheck_t zvec_namecheck; 93 boolean_t zvec_his_log; 94 boolean_t zvec_pool_check; 95 } zfs_ioc_vec_t; 96 97 /* This array is indexed by zfs_userquota_prop_t */ 98 static const char *userquota_perms[] = { 99 ZFS_DELEG_PERM_USERUSED, 100 ZFS_DELEG_PERM_USERQUOTA, 101 ZFS_DELEG_PERM_GROUPUSED, 102 ZFS_DELEG_PERM_GROUPQUOTA, 103 }; 104 105 static int zfs_ioc_userspace_upgrade(zfs_cmd_t *zc); 106 static int zfs_check_settable(const char *name, nvpair_t *property, 107 cred_t *cr); 108 static int zfs_check_clearable(char *dataset, nvlist_t *props, 109 nvlist_t **errors); 110 static int zfs_fill_zplprops_root(uint64_t, nvlist_t *, nvlist_t *, 111 boolean_t *); 112 int zfs_set_prop_nvlist(const char *, zprop_source_t, nvlist_t *, nvlist_t **); 113 114 /* _NOTE(PRINTFLIKE(4)) - this is printf-like, but lint is too whiney */ 115 void 116 __dprintf(const char *file, const char *func, int line, const char *fmt, ...) 117 { 118 const char *newfile; 119 char buf[256]; 120 va_list adx; 121 122 /* 123 * Get rid of annoying "../common/" prefix to filename. 124 */ 125 newfile = strrchr(file, '/'); 126 if (newfile != NULL) { 127 newfile = newfile + 1; /* Get rid of leading / */ 128 } else { 129 newfile = file; 130 } 131 132 va_start(adx, fmt); 133 (void) vsnprintf(buf, sizeof (buf), fmt, adx); 134 va_end(adx); 135 136 /* 137 * To get this data, use the zfs-dprintf probe as so: 138 * dtrace -q -n 'zfs-dprintf \ 139 * /stringof(arg0) == "dbuf.c"/ \ 140 * {printf("%s: %s", stringof(arg1), stringof(arg3))}' 141 * arg0 = file name 142 * arg1 = function name 143 * arg2 = line number 144 * arg3 = message 145 */ 146 DTRACE_PROBE4(zfs__dprintf, 147 char *, newfile, char *, func, int, line, char *, buf); 148 } 149 150 static void 151 history_str_free(char *buf) 152 { 153 kmem_free(buf, HIS_MAX_RECORD_LEN); 154 } 155 156 static char * 157 history_str_get(zfs_cmd_t *zc) 158 { 159 char *buf; 160 161 if (zc->zc_history == NULL) 162 return (NULL); 163 164 buf = kmem_alloc(HIS_MAX_RECORD_LEN, KM_SLEEP); 165 if (copyinstr((void *)(uintptr_t)zc->zc_history, 166 buf, HIS_MAX_RECORD_LEN, NULL) != 0) { 167 history_str_free(buf); 168 return (NULL); 169 } 170 171 buf[HIS_MAX_RECORD_LEN -1] = '\0'; 172 173 return (buf); 174 } 175 176 /* 177 * Check to see if the named dataset is currently defined as bootable 178 */ 179 static boolean_t 180 zfs_is_bootfs(const char *name) 181 { 182 objset_t *os; 183 184 if (dmu_objset_hold(name, FTAG, &os) == 0) { 185 boolean_t ret; 186 ret = (dmu_objset_id(os) == spa_bootfs(dmu_objset_spa(os))); 187 dmu_objset_rele(os, FTAG); 188 return (ret); 189 } 190 return (B_FALSE); 191 } 192 193 /* 194 * zfs_earlier_version 195 * 196 * Return non-zero if the spa version is less than requested version. 197 */ 198 static int 199 zfs_earlier_version(const char *name, int version) 200 { 201 spa_t *spa; 202 203 if (spa_open(name, &spa, FTAG) == 0) { 204 if (spa_version(spa) < version) { 205 spa_close(spa, FTAG); 206 return (1); 207 } 208 spa_close(spa, FTAG); 209 } 210 return (0); 211 } 212 213 /* 214 * zpl_earlier_version 215 * 216 * Return TRUE if the ZPL version is less than requested version. 217 */ 218 static boolean_t 219 zpl_earlier_version(const char *name, int version) 220 { 221 objset_t *os; 222 boolean_t rc = B_TRUE; 223 224 if (dmu_objset_hold(name, FTAG, &os) == 0) { 225 uint64_t zplversion; 226 227 if (dmu_objset_type(os) != DMU_OST_ZFS) { 228 dmu_objset_rele(os, FTAG); 229 return (B_TRUE); 230 } 231 /* XXX reading from non-owned objset */ 232 if (zfs_get_zplprop(os, ZFS_PROP_VERSION, &zplversion) == 0) 233 rc = zplversion < version; 234 dmu_objset_rele(os, FTAG); 235 } 236 return (rc); 237 } 238 239 static void 240 zfs_log_history(zfs_cmd_t *zc) 241 { 242 spa_t *spa; 243 char *buf; 244 245 if ((buf = history_str_get(zc)) == NULL) 246 return; 247 248 if (spa_open(zc->zc_name, &spa, FTAG) == 0) { 249 if (spa_version(spa) >= SPA_VERSION_ZPOOL_HISTORY) 250 (void) spa_history_log(spa, buf, LOG_CMD_NORMAL); 251 spa_close(spa, FTAG); 252 } 253 history_str_free(buf); 254 } 255 256 /* 257 * Policy for top-level read operations (list pools). Requires no privileges, 258 * and can be used in the local zone, as there is no associated dataset. 259 */ 260 /* ARGSUSED */ 261 static int 262 zfs_secpolicy_none(zfs_cmd_t *zc, cred_t *cr) 263 { 264 return (0); 265 } 266 267 /* 268 * Policy for dataset read operations (list children, get statistics). Requires 269 * no privileges, but must be visible in the local zone. 270 */ 271 /* ARGSUSED */ 272 static int 273 zfs_secpolicy_read(zfs_cmd_t *zc, cred_t *cr) 274 { 275 if (INGLOBALZONE(curproc) || 276 zone_dataset_visible(zc->zc_name, NULL)) 277 return (0); 278 279 return (ENOENT); 280 } 281 282 static int 283 zfs_dozonecheck(const char *dataset, cred_t *cr) 284 { 285 uint64_t zoned; 286 int writable = 1; 287 288 /* 289 * The dataset must be visible by this zone -- check this first 290 * so they don't see EPERM on something they shouldn't know about. 291 */ 292 if (!INGLOBALZONE(curproc) && 293 !zone_dataset_visible(dataset, &writable)) 294 return (ENOENT); 295 296 if (dsl_prop_get_integer(dataset, "zoned", &zoned, NULL)) 297 return (ENOENT); 298 299 if (INGLOBALZONE(curproc)) { 300 /* 301 * If the fs is zoned, only root can access it from the 302 * global zone. 303 */ 304 if (secpolicy_zfs(cr) && zoned) 305 return (EPERM); 306 } else { 307 /* 308 * If we are in a local zone, the 'zoned' property must be set. 309 */ 310 if (!zoned) 311 return (EPERM); 312 313 /* must be writable by this zone */ 314 if (!writable) 315 return (EPERM); 316 } 317 return (0); 318 } 319 320 int 321 zfs_secpolicy_write_perms(const char *name, const char *perm, cred_t *cr) 322 { 323 int error; 324 325 error = zfs_dozonecheck(name, cr); 326 if (error == 0) { 327 error = secpolicy_zfs(cr); 328 if (error) 329 error = dsl_deleg_access(name, perm, cr); 330 } 331 return (error); 332 } 333 334 /* 335 * Policy for setting the security label property. 336 * 337 * Returns 0 for success, non-zero for access and other errors. 338 */ 339 static int 340 zfs_set_slabel_policy(const char *name, char *strval, cred_t *cr) 341 { 342 char ds_hexsl[MAXNAMELEN]; 343 bslabel_t ds_sl, new_sl; 344 boolean_t new_default = FALSE; 345 uint64_t zoned; 346 int needed_priv = -1; 347 int error; 348 349 /* First get the existing dataset label. */ 350 error = dsl_prop_get(name, zfs_prop_to_name(ZFS_PROP_MLSLABEL), 351 1, sizeof (ds_hexsl), &ds_hexsl, NULL); 352 if (error) 353 return (EPERM); 354 355 if (strcasecmp(strval, ZFS_MLSLABEL_DEFAULT) == 0) 356 new_default = TRUE; 357 358 /* The label must be translatable */ 359 if (!new_default && (hexstr_to_label(strval, &new_sl) != 0)) 360 return (EINVAL); 361 362 /* 363 * In a non-global zone, disallow attempts to set a label that 364 * doesn't match that of the zone; otherwise no other checks 365 * are needed. 366 */ 367 if (!INGLOBALZONE(curproc)) { 368 if (new_default || !blequal(&new_sl, CR_SL(CRED()))) 369 return (EPERM); 370 return (0); 371 } 372 373 /* 374 * For global-zone datasets (i.e., those whose zoned property is 375 * "off", verify that the specified new label is valid for the 376 * global zone. 377 */ 378 if (dsl_prop_get_integer(name, 379 zfs_prop_to_name(ZFS_PROP_ZONED), &zoned, NULL)) 380 return (EPERM); 381 if (!zoned) { 382 if (zfs_check_global_label(name, strval) != 0) 383 return (EPERM); 384 } 385 386 /* 387 * If the existing dataset label is nondefault, check if the 388 * dataset is mounted (label cannot be changed while mounted). 389 * Get the zfsvfs; if there isn't one, then the dataset isn't 390 * mounted (or isn't a dataset, doesn't exist, ...). 391 */ 392 if (strcasecmp(ds_hexsl, ZFS_MLSLABEL_DEFAULT) != 0) { 393 objset_t *os; 394 static char *setsl_tag = "setsl_tag"; 395 396 /* 397 * Try to own the dataset; abort if there is any error, 398 * (e.g., already mounted, in use, or other error). 399 */ 400 error = dmu_objset_own(name, DMU_OST_ZFS, B_TRUE, 401 setsl_tag, &os); 402 if (error) 403 return (EPERM); 404 405 dmu_objset_disown(os, setsl_tag); 406 407 if (new_default) { 408 needed_priv = PRIV_FILE_DOWNGRADE_SL; 409 goto out_check; 410 } 411 412 if (hexstr_to_label(strval, &new_sl) != 0) 413 return (EPERM); 414 415 if (blstrictdom(&ds_sl, &new_sl)) 416 needed_priv = PRIV_FILE_DOWNGRADE_SL; 417 else if (blstrictdom(&new_sl, &ds_sl)) 418 needed_priv = PRIV_FILE_UPGRADE_SL; 419 } else { 420 /* dataset currently has a default label */ 421 if (!new_default) 422 needed_priv = PRIV_FILE_UPGRADE_SL; 423 } 424 425 out_check: 426 if (needed_priv != -1) 427 return (PRIV_POLICY(cr, needed_priv, B_FALSE, EPERM, NULL)); 428 return (0); 429 } 430 431 static int 432 zfs_secpolicy_setprop(const char *dsname, zfs_prop_t prop, nvpair_t *propval, 433 cred_t *cr) 434 { 435 char *strval; 436 437 /* 438 * Check permissions for special properties. 439 */ 440 switch (prop) { 441 case ZFS_PROP_ZONED: 442 /* 443 * Disallow setting of 'zoned' from within a local zone. 444 */ 445 if (!INGLOBALZONE(curproc)) 446 return (EPERM); 447 break; 448 449 case ZFS_PROP_QUOTA: 450 if (!INGLOBALZONE(curproc)) { 451 uint64_t zoned; 452 char setpoint[MAXNAMELEN]; 453 /* 454 * Unprivileged users are allowed to modify the 455 * quota on things *under* (ie. contained by) 456 * the thing they own. 457 */ 458 if (dsl_prop_get_integer(dsname, "zoned", &zoned, 459 setpoint)) 460 return (EPERM); 461 if (!zoned || strlen(dsname) <= strlen(setpoint)) 462 return (EPERM); 463 } 464 break; 465 466 case ZFS_PROP_MLSLABEL: 467 if (!is_system_labeled()) 468 return (EPERM); 469 470 if (nvpair_value_string(propval, &strval) == 0) { 471 int err; 472 473 err = zfs_set_slabel_policy(dsname, strval, CRED()); 474 if (err != 0) 475 return (err); 476 } 477 break; 478 } 479 480 return (zfs_secpolicy_write_perms(dsname, zfs_prop_to_name(prop), cr)); 481 } 482 483 int 484 zfs_secpolicy_fsacl(zfs_cmd_t *zc, cred_t *cr) 485 { 486 int error; 487 488 error = zfs_dozonecheck(zc->zc_name, cr); 489 if (error) 490 return (error); 491 492 /* 493 * permission to set permissions will be evaluated later in 494 * dsl_deleg_can_allow() 495 */ 496 return (0); 497 } 498 499 int 500 zfs_secpolicy_rollback(zfs_cmd_t *zc, cred_t *cr) 501 { 502 return (zfs_secpolicy_write_perms(zc->zc_name, 503 ZFS_DELEG_PERM_ROLLBACK, cr)); 504 } 505 506 int 507 zfs_secpolicy_send(zfs_cmd_t *zc, cred_t *cr) 508 { 509 return (zfs_secpolicy_write_perms(zc->zc_name, 510 ZFS_DELEG_PERM_SEND, cr)); 511 } 512 513 static int 514 zfs_secpolicy_deleg_share(zfs_cmd_t *zc, cred_t *cr) 515 { 516 vnode_t *vp; 517 int error; 518 519 if ((error = lookupname(zc->zc_value, UIO_SYSSPACE, 520 NO_FOLLOW, NULL, &vp)) != 0) 521 return (error); 522 523 /* Now make sure mntpnt and dataset are ZFS */ 524 525 if (vp->v_vfsp->vfs_fstype != zfsfstype || 526 (strcmp((char *)refstr_value(vp->v_vfsp->vfs_resource), 527 zc->zc_name) != 0)) { 528 VN_RELE(vp); 529 return (EPERM); 530 } 531 532 VN_RELE(vp); 533 return (dsl_deleg_access(zc->zc_name, 534 ZFS_DELEG_PERM_SHARE, cr)); 535 } 536 537 int 538 zfs_secpolicy_share(zfs_cmd_t *zc, cred_t *cr) 539 { 540 if (!INGLOBALZONE(curproc)) 541 return (EPERM); 542 543 if (secpolicy_nfs(cr) == 0) { 544 return (0); 545 } else { 546 return (zfs_secpolicy_deleg_share(zc, cr)); 547 } 548 } 549 550 int 551 zfs_secpolicy_smb_acl(zfs_cmd_t *zc, cred_t *cr) 552 { 553 if (!INGLOBALZONE(curproc)) 554 return (EPERM); 555 556 if (secpolicy_smb(cr) == 0) { 557 return (0); 558 } else { 559 return (zfs_secpolicy_deleg_share(zc, cr)); 560 } 561 } 562 563 static int 564 zfs_get_parent(const char *datasetname, char *parent, int parentsize) 565 { 566 char *cp; 567 568 /* 569 * Remove the @bla or /bla from the end of the name to get the parent. 570 */ 571 (void) strncpy(parent, datasetname, parentsize); 572 cp = strrchr(parent, '@'); 573 if (cp != NULL) { 574 cp[0] = '\0'; 575 } else { 576 cp = strrchr(parent, '/'); 577 if (cp == NULL) 578 return (ENOENT); 579 cp[0] = '\0'; 580 } 581 582 return (0); 583 } 584 585 int 586 zfs_secpolicy_destroy_perms(const char *name, cred_t *cr) 587 { 588 int error; 589 590 if ((error = zfs_secpolicy_write_perms(name, 591 ZFS_DELEG_PERM_MOUNT, cr)) != 0) 592 return (error); 593 594 return (zfs_secpolicy_write_perms(name, ZFS_DELEG_PERM_DESTROY, cr)); 595 } 596 597 static int 598 zfs_secpolicy_destroy(zfs_cmd_t *zc, cred_t *cr) 599 { 600 return (zfs_secpolicy_destroy_perms(zc->zc_name, cr)); 601 } 602 603 /* 604 * Destroying snapshots with delegated permissions requires 605 * descendent mount and destroy permissions. 606 * Reassemble the full filesystem@snap name so dsl_deleg_access() 607 * can do the correct permission check. 608 * 609 * Since this routine is used when doing a recursive destroy of snapshots 610 * and destroying snapshots requires descendent permissions, a successfull 611 * check of the top level snapshot applies to snapshots of all descendent 612 * datasets as well. 613 */ 614 static int 615 zfs_secpolicy_destroy_snaps(zfs_cmd_t *zc, cred_t *cr) 616 { 617 int error; 618 char *dsname; 619 620 dsname = kmem_asprintf("%s@%s", zc->zc_name, zc->zc_value); 621 622 error = zfs_secpolicy_destroy_perms(dsname, cr); 623 624 strfree(dsname); 625 return (error); 626 } 627 628 /* 629 * Must have sys_config privilege to check the iscsi permission 630 */ 631 /* ARGSUSED */ 632 static int 633 zfs_secpolicy_iscsi(zfs_cmd_t *zc, cred_t *cr) 634 { 635 return (secpolicy_zfs(cr)); 636 } 637 638 int 639 zfs_secpolicy_rename_perms(const char *from, const char *to, cred_t *cr) 640 { 641 char parentname[MAXNAMELEN]; 642 int error; 643 644 if ((error = zfs_secpolicy_write_perms(from, 645 ZFS_DELEG_PERM_RENAME, cr)) != 0) 646 return (error); 647 648 if ((error = zfs_secpolicy_write_perms(from, 649 ZFS_DELEG_PERM_MOUNT, cr)) != 0) 650 return (error); 651 652 if ((error = zfs_get_parent(to, parentname, 653 sizeof (parentname))) != 0) 654 return (error); 655 656 if ((error = zfs_secpolicy_write_perms(parentname, 657 ZFS_DELEG_PERM_CREATE, cr)) != 0) 658 return (error); 659 660 if ((error = zfs_secpolicy_write_perms(parentname, 661 ZFS_DELEG_PERM_MOUNT, cr)) != 0) 662 return (error); 663 664 return (error); 665 } 666 667 static int 668 zfs_secpolicy_rename(zfs_cmd_t *zc, cred_t *cr) 669 { 670 return (zfs_secpolicy_rename_perms(zc->zc_name, zc->zc_value, cr)); 671 } 672 673 static int 674 zfs_secpolicy_promote(zfs_cmd_t *zc, cred_t *cr) 675 { 676 char parentname[MAXNAMELEN]; 677 objset_t *clone; 678 int error; 679 680 error = zfs_secpolicy_write_perms(zc->zc_name, 681 ZFS_DELEG_PERM_PROMOTE, cr); 682 if (error) 683 return (error); 684 685 error = dmu_objset_hold(zc->zc_name, FTAG, &clone); 686 687 if (error == 0) { 688 dsl_dataset_t *pclone = NULL; 689 dsl_dir_t *dd; 690 dd = clone->os_dsl_dataset->ds_dir; 691 692 rw_enter(&dd->dd_pool->dp_config_rwlock, RW_READER); 693 error = dsl_dataset_hold_obj(dd->dd_pool, 694 dd->dd_phys->dd_origin_obj, FTAG, &pclone); 695 rw_exit(&dd->dd_pool->dp_config_rwlock); 696 if (error) { 697 dmu_objset_rele(clone, FTAG); 698 return (error); 699 } 700 701 error = zfs_secpolicy_write_perms(zc->zc_name, 702 ZFS_DELEG_PERM_MOUNT, cr); 703 704 dsl_dataset_name(pclone, parentname); 705 dmu_objset_rele(clone, FTAG); 706 dsl_dataset_rele(pclone, FTAG); 707 if (error == 0) 708 error = zfs_secpolicy_write_perms(parentname, 709 ZFS_DELEG_PERM_PROMOTE, cr); 710 } 711 return (error); 712 } 713 714 static int 715 zfs_secpolicy_receive(zfs_cmd_t *zc, cred_t *cr) 716 { 717 int error; 718 719 if ((error = zfs_secpolicy_write_perms(zc->zc_name, 720 ZFS_DELEG_PERM_RECEIVE, cr)) != 0) 721 return (error); 722 723 if ((error = zfs_secpolicy_write_perms(zc->zc_name, 724 ZFS_DELEG_PERM_MOUNT, cr)) != 0) 725 return (error); 726 727 return (zfs_secpolicy_write_perms(zc->zc_name, 728 ZFS_DELEG_PERM_CREATE, cr)); 729 } 730 731 int 732 zfs_secpolicy_snapshot_perms(const char *name, cred_t *cr) 733 { 734 return (zfs_secpolicy_write_perms(name, 735 ZFS_DELEG_PERM_SNAPSHOT, cr)); 736 } 737 738 static int 739 zfs_secpolicy_snapshot(zfs_cmd_t *zc, cred_t *cr) 740 { 741 742 return (zfs_secpolicy_snapshot_perms(zc->zc_name, cr)); 743 } 744 745 static int 746 zfs_secpolicy_create(zfs_cmd_t *zc, cred_t *cr) 747 { 748 char parentname[MAXNAMELEN]; 749 int error; 750 751 if ((error = zfs_get_parent(zc->zc_name, parentname, 752 sizeof (parentname))) != 0) 753 return (error); 754 755 if (zc->zc_value[0] != '\0') { 756 if ((error = zfs_secpolicy_write_perms(zc->zc_value, 757 ZFS_DELEG_PERM_CLONE, cr)) != 0) 758 return (error); 759 } 760 761 if ((error = zfs_secpolicy_write_perms(parentname, 762 ZFS_DELEG_PERM_CREATE, cr)) != 0) 763 return (error); 764 765 error = zfs_secpolicy_write_perms(parentname, 766 ZFS_DELEG_PERM_MOUNT, cr); 767 768 return (error); 769 } 770 771 static int 772 zfs_secpolicy_umount(zfs_cmd_t *zc, cred_t *cr) 773 { 774 int error; 775 776 error = secpolicy_fs_unmount(cr, NULL); 777 if (error) { 778 error = dsl_deleg_access(zc->zc_name, ZFS_DELEG_PERM_MOUNT, cr); 779 } 780 return (error); 781 } 782 783 /* 784 * Policy for pool operations - create/destroy pools, add vdevs, etc. Requires 785 * SYS_CONFIG privilege, which is not available in a local zone. 786 */ 787 /* ARGSUSED */ 788 static int 789 zfs_secpolicy_config(zfs_cmd_t *zc, cred_t *cr) 790 { 791 if (secpolicy_sys_config(cr, B_FALSE) != 0) 792 return (EPERM); 793 794 return (0); 795 } 796 797 /* 798 * Policy for fault injection. Requires all privileges. 799 */ 800 /* ARGSUSED */ 801 static int 802 zfs_secpolicy_inject(zfs_cmd_t *zc, cred_t *cr) 803 { 804 return (secpolicy_zinject(cr)); 805 } 806 807 static int 808 zfs_secpolicy_inherit(zfs_cmd_t *zc, cred_t *cr) 809 { 810 zfs_prop_t prop = zfs_name_to_prop(zc->zc_value); 811 812 if (prop == ZPROP_INVAL) { 813 if (!zfs_prop_user(zc->zc_value)) 814 return (EINVAL); 815 return (zfs_secpolicy_write_perms(zc->zc_name, 816 ZFS_DELEG_PERM_USERPROP, cr)); 817 } else { 818 return (zfs_secpolicy_setprop(zc->zc_name, prop, 819 NULL, cr)); 820 } 821 } 822 823 static int 824 zfs_secpolicy_userspace_one(zfs_cmd_t *zc, cred_t *cr) 825 { 826 int err = zfs_secpolicy_read(zc, cr); 827 if (err) 828 return (err); 829 830 if (zc->zc_objset_type >= ZFS_NUM_USERQUOTA_PROPS) 831 return (EINVAL); 832 833 if (zc->zc_value[0] == 0) { 834 /* 835 * They are asking about a posix uid/gid. If it's 836 * themself, allow it. 837 */ 838 if (zc->zc_objset_type == ZFS_PROP_USERUSED || 839 zc->zc_objset_type == ZFS_PROP_USERQUOTA) { 840 if (zc->zc_guid == crgetuid(cr)) 841 return (0); 842 } else { 843 if (groupmember(zc->zc_guid, cr)) 844 return (0); 845 } 846 } 847 848 return (zfs_secpolicy_write_perms(zc->zc_name, 849 userquota_perms[zc->zc_objset_type], cr)); 850 } 851 852 static int 853 zfs_secpolicy_userspace_many(zfs_cmd_t *zc, cred_t *cr) 854 { 855 int err = zfs_secpolicy_read(zc, cr); 856 if (err) 857 return (err); 858 859 if (zc->zc_objset_type >= ZFS_NUM_USERQUOTA_PROPS) 860 return (EINVAL); 861 862 return (zfs_secpolicy_write_perms(zc->zc_name, 863 userquota_perms[zc->zc_objset_type], cr)); 864 } 865 866 static int 867 zfs_secpolicy_userspace_upgrade(zfs_cmd_t *zc, cred_t *cr) 868 { 869 return (zfs_secpolicy_setprop(zc->zc_name, ZFS_PROP_VERSION, 870 NULL, cr)); 871 } 872 873 static int 874 zfs_secpolicy_hold(zfs_cmd_t *zc, cred_t *cr) 875 { 876 return (zfs_secpolicy_write_perms(zc->zc_name, 877 ZFS_DELEG_PERM_HOLD, cr)); 878 } 879 880 static int 881 zfs_secpolicy_release(zfs_cmd_t *zc, cred_t *cr) 882 { 883 return (zfs_secpolicy_write_perms(zc->zc_name, 884 ZFS_DELEG_PERM_RELEASE, cr)); 885 } 886 887 /* 888 * Returns the nvlist as specified by the user in the zfs_cmd_t. 889 */ 890 static int 891 get_nvlist(uint64_t nvl, uint64_t size, int iflag, nvlist_t **nvp) 892 { 893 char *packed; 894 int error; 895 nvlist_t *list = NULL; 896 897 /* 898 * Read in and unpack the user-supplied nvlist. 899 */ 900 if (size == 0) 901 return (EINVAL); 902 903 packed = kmem_alloc(size, KM_SLEEP); 904 905 if ((error = ddi_copyin((void *)(uintptr_t)nvl, packed, size, 906 iflag)) != 0) { 907 kmem_free(packed, size); 908 return (error); 909 } 910 911 if ((error = nvlist_unpack(packed, size, &list, 0)) != 0) { 912 kmem_free(packed, size); 913 return (error); 914 } 915 916 kmem_free(packed, size); 917 918 *nvp = list; 919 return (0); 920 } 921 922 static int 923 fit_error_list(zfs_cmd_t *zc, nvlist_t **errors) 924 { 925 size_t size; 926 927 VERIFY(nvlist_size(*errors, &size, NV_ENCODE_NATIVE) == 0); 928 929 if (size > zc->zc_nvlist_dst_size) { 930 nvpair_t *more_errors; 931 int n = 0; 932 933 if (zc->zc_nvlist_dst_size < 1024) 934 return (ENOMEM); 935 936 VERIFY(nvlist_add_int32(*errors, ZPROP_N_MORE_ERRORS, 0) == 0); 937 more_errors = nvlist_prev_nvpair(*errors, NULL); 938 939 do { 940 nvpair_t *pair = nvlist_prev_nvpair(*errors, 941 more_errors); 942 VERIFY(nvlist_remove_nvpair(*errors, pair) == 0); 943 n++; 944 VERIFY(nvlist_size(*errors, &size, 945 NV_ENCODE_NATIVE) == 0); 946 } while (size > zc->zc_nvlist_dst_size); 947 948 VERIFY(nvlist_remove_nvpair(*errors, more_errors) == 0); 949 VERIFY(nvlist_add_int32(*errors, ZPROP_N_MORE_ERRORS, n) == 0); 950 ASSERT(nvlist_size(*errors, &size, NV_ENCODE_NATIVE) == 0); 951 ASSERT(size <= zc->zc_nvlist_dst_size); 952 } 953 954 return (0); 955 } 956 957 static int 958 put_nvlist(zfs_cmd_t *zc, nvlist_t *nvl) 959 { 960 char *packed = NULL; 961 size_t size; 962 int error; 963 964 VERIFY(nvlist_size(nvl, &size, NV_ENCODE_NATIVE) == 0); 965 966 if (size > zc->zc_nvlist_dst_size) { 967 error = ENOMEM; 968 } else { 969 packed = kmem_alloc(size, KM_SLEEP); 970 VERIFY(nvlist_pack(nvl, &packed, &size, NV_ENCODE_NATIVE, 971 KM_SLEEP) == 0); 972 error = ddi_copyout(packed, 973 (void *)(uintptr_t)zc->zc_nvlist_dst, size, zc->zc_iflags); 974 kmem_free(packed, size); 975 } 976 977 zc->zc_nvlist_dst_size = size; 978 return (error); 979 } 980 981 static int 982 getzfsvfs(const char *dsname, zfsvfs_t **zfvp) 983 { 984 objset_t *os; 985 int error; 986 987 error = dmu_objset_hold(dsname, FTAG, &os); 988 if (error) 989 return (error); 990 if (dmu_objset_type(os) != DMU_OST_ZFS) { 991 dmu_objset_rele(os, FTAG); 992 return (EINVAL); 993 } 994 995 mutex_enter(&os->os_user_ptr_lock); 996 *zfvp = dmu_objset_get_user(os); 997 if (*zfvp) { 998 VFS_HOLD((*zfvp)->z_vfs); 999 } else { 1000 error = ESRCH; 1001 } 1002 mutex_exit(&os->os_user_ptr_lock); 1003 dmu_objset_rele(os, FTAG); 1004 return (error); 1005 } 1006 1007 /* 1008 * Find a zfsvfs_t for a mounted filesystem, or create our own, in which 1009 * case its z_vfs will be NULL, and it will be opened as the owner. 1010 */ 1011 static int 1012 zfsvfs_hold(const char *name, void *tag, zfsvfs_t **zfvp) 1013 { 1014 int error = 0; 1015 1016 if (getzfsvfs(name, zfvp) != 0) 1017 error = zfsvfs_create(name, zfvp); 1018 if (error == 0) { 1019 rrw_enter(&(*zfvp)->z_teardown_lock, RW_READER, tag); 1020 if ((*zfvp)->z_unmounted) { 1021 /* 1022 * XXX we could probably try again, since the unmounting 1023 * thread should be just about to disassociate the 1024 * objset from the zfsvfs. 1025 */ 1026 rrw_exit(&(*zfvp)->z_teardown_lock, tag); 1027 return (EBUSY); 1028 } 1029 } 1030 return (error); 1031 } 1032 1033 static void 1034 zfsvfs_rele(zfsvfs_t *zfsvfs, void *tag) 1035 { 1036 rrw_exit(&zfsvfs->z_teardown_lock, tag); 1037 1038 if (zfsvfs->z_vfs) { 1039 VFS_RELE(zfsvfs->z_vfs); 1040 } else { 1041 dmu_objset_disown(zfsvfs->z_os, zfsvfs); 1042 zfsvfs_free(zfsvfs); 1043 } 1044 } 1045 1046 static int 1047 zfs_ioc_pool_create(zfs_cmd_t *zc) 1048 { 1049 int error; 1050 nvlist_t *config, *props = NULL; 1051 nvlist_t *rootprops = NULL; 1052 nvlist_t *zplprops = NULL; 1053 char *buf; 1054 1055 if (error = get_nvlist(zc->zc_nvlist_conf, zc->zc_nvlist_conf_size, 1056 zc->zc_iflags, &config)) 1057 return (error); 1058 1059 if (zc->zc_nvlist_src_size != 0 && (error = 1060 get_nvlist(zc->zc_nvlist_src, zc->zc_nvlist_src_size, 1061 zc->zc_iflags, &props))) { 1062 nvlist_free(config); 1063 return (error); 1064 } 1065 1066 if (props) { 1067 nvlist_t *nvl = NULL; 1068 uint64_t version = SPA_VERSION; 1069 1070 (void) nvlist_lookup_uint64(props, 1071 zpool_prop_to_name(ZPOOL_PROP_VERSION), &version); 1072 if (version < SPA_VERSION_INITIAL || version > SPA_VERSION) { 1073 error = EINVAL; 1074 goto pool_props_bad; 1075 } 1076 (void) nvlist_lookup_nvlist(props, ZPOOL_ROOTFS_PROPS, &nvl); 1077 if (nvl) { 1078 error = nvlist_dup(nvl, &rootprops, KM_SLEEP); 1079 if (error != 0) { 1080 nvlist_free(config); 1081 nvlist_free(props); 1082 return (error); 1083 } 1084 (void) nvlist_remove_all(props, ZPOOL_ROOTFS_PROPS); 1085 } 1086 VERIFY(nvlist_alloc(&zplprops, NV_UNIQUE_NAME, KM_SLEEP) == 0); 1087 error = zfs_fill_zplprops_root(version, rootprops, 1088 zplprops, NULL); 1089 if (error) 1090 goto pool_props_bad; 1091 } 1092 1093 buf = history_str_get(zc); 1094 1095 error = spa_create(zc->zc_name, config, props, buf, zplprops); 1096 1097 /* 1098 * Set the remaining root properties 1099 */ 1100 if (!error && (error = zfs_set_prop_nvlist(zc->zc_name, 1101 ZPROP_SRC_LOCAL, rootprops, NULL)) != 0) 1102 (void) spa_destroy(zc->zc_name); 1103 1104 if (buf != NULL) 1105 history_str_free(buf); 1106 1107 pool_props_bad: 1108 nvlist_free(rootprops); 1109 nvlist_free(zplprops); 1110 nvlist_free(config); 1111 nvlist_free(props); 1112 1113 return (error); 1114 } 1115 1116 static int 1117 zfs_ioc_pool_destroy(zfs_cmd_t *zc) 1118 { 1119 int error; 1120 zfs_log_history(zc); 1121 error = spa_destroy(zc->zc_name); 1122 if (error == 0) 1123 zvol_remove_minors(zc->zc_name); 1124 return (error); 1125 } 1126 1127 static int 1128 zfs_ioc_pool_import(zfs_cmd_t *zc) 1129 { 1130 nvlist_t *config, *props = NULL; 1131 uint64_t guid; 1132 int error; 1133 1134 if ((error = get_nvlist(zc->zc_nvlist_conf, zc->zc_nvlist_conf_size, 1135 zc->zc_iflags, &config)) != 0) 1136 return (error); 1137 1138 if (zc->zc_nvlist_src_size != 0 && (error = 1139 get_nvlist(zc->zc_nvlist_src, zc->zc_nvlist_src_size, 1140 zc->zc_iflags, &props))) { 1141 nvlist_free(config); 1142 return (error); 1143 } 1144 1145 if (nvlist_lookup_uint64(config, ZPOOL_CONFIG_POOL_GUID, &guid) != 0 || 1146 guid != zc->zc_guid) 1147 error = EINVAL; 1148 else if (zc->zc_cookie) 1149 error = spa_import_verbatim(zc->zc_name, config, props); 1150 else 1151 error = spa_import(zc->zc_name, config, props); 1152 1153 if (zc->zc_nvlist_dst != 0) 1154 (void) put_nvlist(zc, config); 1155 1156 nvlist_free(config); 1157 1158 if (props) 1159 nvlist_free(props); 1160 1161 return (error); 1162 } 1163 1164 static int 1165 zfs_ioc_pool_export(zfs_cmd_t *zc) 1166 { 1167 int error; 1168 boolean_t force = (boolean_t)zc->zc_cookie; 1169 boolean_t hardforce = (boolean_t)zc->zc_guid; 1170 1171 zfs_log_history(zc); 1172 error = spa_export(zc->zc_name, NULL, force, hardforce); 1173 if (error == 0) 1174 zvol_remove_minors(zc->zc_name); 1175 return (error); 1176 } 1177 1178 static int 1179 zfs_ioc_pool_configs(zfs_cmd_t *zc) 1180 { 1181 nvlist_t *configs; 1182 int error; 1183 1184 if ((configs = spa_all_configs(&zc->zc_cookie)) == NULL) 1185 return (EEXIST); 1186 1187 error = put_nvlist(zc, configs); 1188 1189 nvlist_free(configs); 1190 1191 return (error); 1192 } 1193 1194 static int 1195 zfs_ioc_pool_stats(zfs_cmd_t *zc) 1196 { 1197 nvlist_t *config; 1198 int error; 1199 int ret = 0; 1200 1201 error = spa_get_stats(zc->zc_name, &config, zc->zc_value, 1202 sizeof (zc->zc_value)); 1203 1204 if (config != NULL) { 1205 ret = put_nvlist(zc, config); 1206 nvlist_free(config); 1207 1208 /* 1209 * The config may be present even if 'error' is non-zero. 1210 * In this case we return success, and preserve the real errno 1211 * in 'zc_cookie'. 1212 */ 1213 zc->zc_cookie = error; 1214 } else { 1215 ret = error; 1216 } 1217 1218 return (ret); 1219 } 1220 1221 /* 1222 * Try to import the given pool, returning pool stats as appropriate so that 1223 * user land knows which devices are available and overall pool health. 1224 */ 1225 static int 1226 zfs_ioc_pool_tryimport(zfs_cmd_t *zc) 1227 { 1228 nvlist_t *tryconfig, *config; 1229 int error; 1230 1231 if ((error = get_nvlist(zc->zc_nvlist_conf, zc->zc_nvlist_conf_size, 1232 zc->zc_iflags, &tryconfig)) != 0) 1233 return (error); 1234 1235 config = spa_tryimport(tryconfig); 1236 1237 nvlist_free(tryconfig); 1238 1239 if (config == NULL) 1240 return (EINVAL); 1241 1242 error = put_nvlist(zc, config); 1243 nvlist_free(config); 1244 1245 return (error); 1246 } 1247 1248 static int 1249 zfs_ioc_pool_scrub(zfs_cmd_t *zc) 1250 { 1251 spa_t *spa; 1252 int error; 1253 1254 if ((error = spa_open(zc->zc_name, &spa, FTAG)) != 0) 1255 return (error); 1256 1257 error = spa_scrub(spa, zc->zc_cookie); 1258 1259 spa_close(spa, FTAG); 1260 1261 return (error); 1262 } 1263 1264 static int 1265 zfs_ioc_pool_freeze(zfs_cmd_t *zc) 1266 { 1267 spa_t *spa; 1268 int error; 1269 1270 error = spa_open(zc->zc_name, &spa, FTAG); 1271 if (error == 0) { 1272 spa_freeze(spa); 1273 spa_close(spa, FTAG); 1274 } 1275 return (error); 1276 } 1277 1278 static int 1279 zfs_ioc_pool_upgrade(zfs_cmd_t *zc) 1280 { 1281 spa_t *spa; 1282 int error; 1283 1284 if ((error = spa_open(zc->zc_name, &spa, FTAG)) != 0) 1285 return (error); 1286 1287 if (zc->zc_cookie < spa_version(spa) || zc->zc_cookie > SPA_VERSION) { 1288 spa_close(spa, FTAG); 1289 return (EINVAL); 1290 } 1291 1292 spa_upgrade(spa, zc->zc_cookie); 1293 spa_close(spa, FTAG); 1294 1295 return (error); 1296 } 1297 1298 static int 1299 zfs_ioc_pool_get_history(zfs_cmd_t *zc) 1300 { 1301 spa_t *spa; 1302 char *hist_buf; 1303 uint64_t size; 1304 int error; 1305 1306 if ((size = zc->zc_history_len) == 0) 1307 return (EINVAL); 1308 1309 if ((error = spa_open(zc->zc_name, &spa, FTAG)) != 0) 1310 return (error); 1311 1312 if (spa_version(spa) < SPA_VERSION_ZPOOL_HISTORY) { 1313 spa_close(spa, FTAG); 1314 return (ENOTSUP); 1315 } 1316 1317 hist_buf = kmem_alloc(size, KM_SLEEP); 1318 if ((error = spa_history_get(spa, &zc->zc_history_offset, 1319 &zc->zc_history_len, hist_buf)) == 0) { 1320 error = ddi_copyout(hist_buf, 1321 (void *)(uintptr_t)zc->zc_history, 1322 zc->zc_history_len, zc->zc_iflags); 1323 } 1324 1325 spa_close(spa, FTAG); 1326 kmem_free(hist_buf, size); 1327 return (error); 1328 } 1329 1330 static int 1331 zfs_ioc_dsobj_to_dsname(zfs_cmd_t *zc) 1332 { 1333 int error; 1334 1335 if (error = dsl_dsobj_to_dsname(zc->zc_name, zc->zc_obj, zc->zc_value)) 1336 return (error); 1337 1338 return (0); 1339 } 1340 1341 /* 1342 * inputs: 1343 * zc_name name of filesystem 1344 * zc_obj object to find 1345 * 1346 * outputs: 1347 * zc_value name of object 1348 */ 1349 static int 1350 zfs_ioc_obj_to_path(zfs_cmd_t *zc) 1351 { 1352 objset_t *os; 1353 int error; 1354 1355 /* XXX reading from objset not owned */ 1356 if ((error = dmu_objset_hold(zc->zc_name, FTAG, &os)) != 0) 1357 return (error); 1358 if (dmu_objset_type(os) != DMU_OST_ZFS) { 1359 dmu_objset_rele(os, FTAG); 1360 return (EINVAL); 1361 } 1362 error = zfs_obj_to_path(os, zc->zc_obj, zc->zc_value, 1363 sizeof (zc->zc_value)); 1364 dmu_objset_rele(os, FTAG); 1365 1366 return (error); 1367 } 1368 1369 static int 1370 zfs_ioc_vdev_add(zfs_cmd_t *zc) 1371 { 1372 spa_t *spa; 1373 int error; 1374 nvlist_t *config, **l2cache, **spares; 1375 uint_t nl2cache = 0, nspares = 0; 1376 1377 error = spa_open(zc->zc_name, &spa, FTAG); 1378 if (error != 0) 1379 return (error); 1380 1381 error = get_nvlist(zc->zc_nvlist_conf, zc->zc_nvlist_conf_size, 1382 zc->zc_iflags, &config); 1383 (void) nvlist_lookup_nvlist_array(config, ZPOOL_CONFIG_L2CACHE, 1384 &l2cache, &nl2cache); 1385 1386 (void) nvlist_lookup_nvlist_array(config, ZPOOL_CONFIG_SPARES, 1387 &spares, &nspares); 1388 1389 /* 1390 * A root pool with concatenated devices is not supported. 1391 * Thus, can not add a device to a root pool. 1392 * 1393 * Intent log device can not be added to a rootpool because 1394 * during mountroot, zil is replayed, a seperated log device 1395 * can not be accessed during the mountroot time. 1396 * 1397 * l2cache and spare devices are ok to be added to a rootpool. 1398 */ 1399 if (spa_bootfs(spa) != 0 && nl2cache == 0 && nspares == 0) { 1400 nvlist_free(config); 1401 spa_close(spa, FTAG); 1402 return (EDOM); 1403 } 1404 1405 if (error == 0) { 1406 error = spa_vdev_add(spa, config); 1407 nvlist_free(config); 1408 } 1409 spa_close(spa, FTAG); 1410 return (error); 1411 } 1412 1413 static int 1414 zfs_ioc_vdev_remove(zfs_cmd_t *zc) 1415 { 1416 spa_t *spa; 1417 int error; 1418 1419 error = spa_open(zc->zc_name, &spa, FTAG); 1420 if (error != 0) 1421 return (error); 1422 error = spa_vdev_remove(spa, zc->zc_guid, B_FALSE); 1423 spa_close(spa, FTAG); 1424 return (error); 1425 } 1426 1427 static int 1428 zfs_ioc_vdev_set_state(zfs_cmd_t *zc) 1429 { 1430 spa_t *spa; 1431 int error; 1432 vdev_state_t newstate = VDEV_STATE_UNKNOWN; 1433 1434 if ((error = spa_open(zc->zc_name, &spa, FTAG)) != 0) 1435 return (error); 1436 switch (zc->zc_cookie) { 1437 case VDEV_STATE_ONLINE: 1438 error = vdev_online(spa, zc->zc_guid, zc->zc_obj, &newstate); 1439 break; 1440 1441 case VDEV_STATE_OFFLINE: 1442 error = vdev_offline(spa, zc->zc_guid, zc->zc_obj); 1443 break; 1444 1445 case VDEV_STATE_FAULTED: 1446 if (zc->zc_obj != VDEV_AUX_ERR_EXCEEDED && 1447 zc->zc_obj != VDEV_AUX_EXTERNAL) 1448 zc->zc_obj = VDEV_AUX_ERR_EXCEEDED; 1449 1450 error = vdev_fault(spa, zc->zc_guid, zc->zc_obj); 1451 break; 1452 1453 case VDEV_STATE_DEGRADED: 1454 if (zc->zc_obj != VDEV_AUX_ERR_EXCEEDED && 1455 zc->zc_obj != VDEV_AUX_EXTERNAL) 1456 zc->zc_obj = VDEV_AUX_ERR_EXCEEDED; 1457 1458 error = vdev_degrade(spa, zc->zc_guid, zc->zc_obj); 1459 break; 1460 1461 default: 1462 error = EINVAL; 1463 } 1464 zc->zc_cookie = newstate; 1465 spa_close(spa, FTAG); 1466 return (error); 1467 } 1468 1469 static int 1470 zfs_ioc_vdev_attach(zfs_cmd_t *zc) 1471 { 1472 spa_t *spa; 1473 int replacing = zc->zc_cookie; 1474 nvlist_t *config; 1475 int error; 1476 1477 if ((error = spa_open(zc->zc_name, &spa, FTAG)) != 0) 1478 return (error); 1479 1480 if ((error = get_nvlist(zc->zc_nvlist_conf, zc->zc_nvlist_conf_size, 1481 zc->zc_iflags, &config)) == 0) { 1482 error = spa_vdev_attach(spa, zc->zc_guid, config, replacing); 1483 nvlist_free(config); 1484 } 1485 1486 spa_close(spa, FTAG); 1487 return (error); 1488 } 1489 1490 static int 1491 zfs_ioc_vdev_detach(zfs_cmd_t *zc) 1492 { 1493 spa_t *spa; 1494 int error; 1495 1496 if ((error = spa_open(zc->zc_name, &spa, FTAG)) != 0) 1497 return (error); 1498 1499 error = spa_vdev_detach(spa, zc->zc_guid, 0, B_FALSE); 1500 1501 spa_close(spa, FTAG); 1502 return (error); 1503 } 1504 1505 static int 1506 zfs_ioc_vdev_split(zfs_cmd_t *zc) 1507 { 1508 spa_t *spa; 1509 nvlist_t *config, *props = NULL; 1510 int error; 1511 boolean_t exp = !!(zc->zc_cookie & ZPOOL_EXPORT_AFTER_SPLIT); 1512 1513 if ((error = spa_open(zc->zc_name, &spa, FTAG)) != 0) 1514 return (error); 1515 1516 if (error = get_nvlist(zc->zc_nvlist_conf, zc->zc_nvlist_conf_size, 1517 zc->zc_iflags, &config)) { 1518 spa_close(spa, FTAG); 1519 return (error); 1520 } 1521 1522 if (zc->zc_nvlist_src_size != 0 && (error = 1523 get_nvlist(zc->zc_nvlist_src, zc->zc_nvlist_src_size, 1524 zc->zc_iflags, &props))) { 1525 spa_close(spa, FTAG); 1526 nvlist_free(config); 1527 return (error); 1528 } 1529 1530 error = spa_vdev_split_mirror(spa, zc->zc_string, config, props, exp); 1531 1532 spa_close(spa, FTAG); 1533 1534 nvlist_free(config); 1535 nvlist_free(props); 1536 1537 return (error); 1538 } 1539 1540 static int 1541 zfs_ioc_vdev_setpath(zfs_cmd_t *zc) 1542 { 1543 spa_t *spa; 1544 char *path = zc->zc_value; 1545 uint64_t guid = zc->zc_guid; 1546 int error; 1547 1548 error = spa_open(zc->zc_name, &spa, FTAG); 1549 if (error != 0) 1550 return (error); 1551 1552 error = spa_vdev_setpath(spa, guid, path); 1553 spa_close(spa, FTAG); 1554 return (error); 1555 } 1556 1557 static int 1558 zfs_ioc_vdev_setfru(zfs_cmd_t *zc) 1559 { 1560 spa_t *spa; 1561 char *fru = zc->zc_value; 1562 uint64_t guid = zc->zc_guid; 1563 int error; 1564 1565 error = spa_open(zc->zc_name, &spa, FTAG); 1566 if (error != 0) 1567 return (error); 1568 1569 error = spa_vdev_setfru(spa, guid, fru); 1570 spa_close(spa, FTAG); 1571 return (error); 1572 } 1573 1574 /* 1575 * inputs: 1576 * zc_name name of filesystem 1577 * zc_nvlist_dst_size size of buffer for property nvlist 1578 * 1579 * outputs: 1580 * zc_objset_stats stats 1581 * zc_nvlist_dst property nvlist 1582 * zc_nvlist_dst_size size of property nvlist 1583 */ 1584 static int 1585 zfs_ioc_objset_stats(zfs_cmd_t *zc) 1586 { 1587 objset_t *os = NULL; 1588 int error; 1589 nvlist_t *nv; 1590 1591 if (error = dmu_objset_hold(zc->zc_name, FTAG, &os)) 1592 return (error); 1593 1594 dmu_objset_fast_stat(os, &zc->zc_objset_stats); 1595 1596 if (zc->zc_nvlist_dst != 0 && 1597 (error = dsl_prop_get_all(os, &nv)) == 0) { 1598 dmu_objset_stats(os, nv); 1599 /* 1600 * NB: zvol_get_stats() will read the objset contents, 1601 * which we aren't supposed to do with a 1602 * DS_MODE_USER hold, because it could be 1603 * inconsistent. So this is a bit of a workaround... 1604 * XXX reading with out owning 1605 */ 1606 if (!zc->zc_objset_stats.dds_inconsistent) { 1607 if (dmu_objset_type(os) == DMU_OST_ZVOL) 1608 VERIFY(zvol_get_stats(os, nv) == 0); 1609 } 1610 error = put_nvlist(zc, nv); 1611 nvlist_free(nv); 1612 } 1613 1614 dmu_objset_rele(os, FTAG); 1615 return (error); 1616 } 1617 1618 /* 1619 * inputs: 1620 * zc_name name of filesystem 1621 * zc_nvlist_dst_size size of buffer for property nvlist 1622 * 1623 * outputs: 1624 * zc_nvlist_dst received property nvlist 1625 * zc_nvlist_dst_size size of received property nvlist 1626 * 1627 * Gets received properties (distinct from local properties on or after 1628 * SPA_VERSION_RECVD_PROPS) for callers who want to differentiate received from 1629 * local property values. 1630 */ 1631 static int 1632 zfs_ioc_objset_recvd_props(zfs_cmd_t *zc) 1633 { 1634 objset_t *os = NULL; 1635 int error; 1636 nvlist_t *nv; 1637 1638 if (error = dmu_objset_hold(zc->zc_name, FTAG, &os)) 1639 return (error); 1640 1641 /* 1642 * Without this check, we would return local property values if the 1643 * caller has not already received properties on or after 1644 * SPA_VERSION_RECVD_PROPS. 1645 */ 1646 if (!dsl_prop_get_hasrecvd(os)) { 1647 dmu_objset_rele(os, FTAG); 1648 return (ENOTSUP); 1649 } 1650 1651 if (zc->zc_nvlist_dst != 0 && 1652 (error = dsl_prop_get_received(os, &nv)) == 0) { 1653 error = put_nvlist(zc, nv); 1654 nvlist_free(nv); 1655 } 1656 1657 dmu_objset_rele(os, FTAG); 1658 return (error); 1659 } 1660 1661 static int 1662 nvl_add_zplprop(objset_t *os, nvlist_t *props, zfs_prop_t prop) 1663 { 1664 uint64_t value; 1665 int error; 1666 1667 /* 1668 * zfs_get_zplprop() will either find a value or give us 1669 * the default value (if there is one). 1670 */ 1671 if ((error = zfs_get_zplprop(os, prop, &value)) != 0) 1672 return (error); 1673 VERIFY(nvlist_add_uint64(props, zfs_prop_to_name(prop), value) == 0); 1674 return (0); 1675 } 1676 1677 /* 1678 * inputs: 1679 * zc_name name of filesystem 1680 * zc_nvlist_dst_size size of buffer for zpl property nvlist 1681 * 1682 * outputs: 1683 * zc_nvlist_dst zpl property nvlist 1684 * zc_nvlist_dst_size size of zpl property nvlist 1685 */ 1686 static int 1687 zfs_ioc_objset_zplprops(zfs_cmd_t *zc) 1688 { 1689 objset_t *os; 1690 int err; 1691 1692 /* XXX reading without owning */ 1693 if (err = dmu_objset_hold(zc->zc_name, FTAG, &os)) 1694 return (err); 1695 1696 dmu_objset_fast_stat(os, &zc->zc_objset_stats); 1697 1698 /* 1699 * NB: nvl_add_zplprop() will read the objset contents, 1700 * which we aren't supposed to do with a DS_MODE_USER 1701 * hold, because it could be inconsistent. 1702 */ 1703 if (zc->zc_nvlist_dst != NULL && 1704 !zc->zc_objset_stats.dds_inconsistent && 1705 dmu_objset_type(os) == DMU_OST_ZFS) { 1706 nvlist_t *nv; 1707 1708 VERIFY(nvlist_alloc(&nv, NV_UNIQUE_NAME, KM_SLEEP) == 0); 1709 if ((err = nvl_add_zplprop(os, nv, ZFS_PROP_VERSION)) == 0 && 1710 (err = nvl_add_zplprop(os, nv, ZFS_PROP_NORMALIZE)) == 0 && 1711 (err = nvl_add_zplprop(os, nv, ZFS_PROP_UTF8ONLY)) == 0 && 1712 (err = nvl_add_zplprop(os, nv, ZFS_PROP_CASE)) == 0) 1713 err = put_nvlist(zc, nv); 1714 nvlist_free(nv); 1715 } else { 1716 err = ENOENT; 1717 } 1718 dmu_objset_rele(os, FTAG); 1719 return (err); 1720 } 1721 1722 static boolean_t 1723 dataset_name_hidden(const char *name) 1724 { 1725 /* 1726 * Skip over datasets that are not visible in this zone, 1727 * internal datasets (which have a $ in their name), and 1728 * temporary datasets (which have a % in their name). 1729 */ 1730 if (strchr(name, '$') != NULL) 1731 return (B_TRUE); 1732 if (strchr(name, '%') != NULL) 1733 return (B_TRUE); 1734 if (!INGLOBALZONE(curproc) && !zone_dataset_visible(name, NULL)) 1735 return (B_TRUE); 1736 return (B_FALSE); 1737 } 1738 1739 /* 1740 * inputs: 1741 * zc_name name of filesystem 1742 * zc_cookie zap cursor 1743 * zc_nvlist_dst_size size of buffer for property nvlist 1744 * 1745 * outputs: 1746 * zc_name name of next filesystem 1747 * zc_cookie zap cursor 1748 * zc_objset_stats stats 1749 * zc_nvlist_dst property nvlist 1750 * zc_nvlist_dst_size size of property nvlist 1751 */ 1752 static int 1753 zfs_ioc_dataset_list_next(zfs_cmd_t *zc) 1754 { 1755 objset_t *os; 1756 int error; 1757 char *p; 1758 1759 if (error = dmu_objset_hold(zc->zc_name, FTAG, &os)) { 1760 if (error == ENOENT) 1761 error = ESRCH; 1762 return (error); 1763 } 1764 1765 p = strrchr(zc->zc_name, '/'); 1766 if (p == NULL || p[1] != '\0') 1767 (void) strlcat(zc->zc_name, "/", sizeof (zc->zc_name)); 1768 p = zc->zc_name + strlen(zc->zc_name); 1769 1770 /* 1771 * Pre-fetch the datasets. dmu_objset_prefetch() always returns 0 1772 * but is not declared void because its called by dmu_objset_find(). 1773 */ 1774 if (zc->zc_cookie == 0) { 1775 uint64_t cookie = 0; 1776 int len = sizeof (zc->zc_name) - (p - zc->zc_name); 1777 1778 while (dmu_dir_list_next(os, len, p, NULL, &cookie) == 0) 1779 (void) dmu_objset_prefetch(p, NULL); 1780 } 1781 1782 do { 1783 error = dmu_dir_list_next(os, 1784 sizeof (zc->zc_name) - (p - zc->zc_name), p, 1785 NULL, &zc->zc_cookie); 1786 if (error == ENOENT) 1787 error = ESRCH; 1788 } while (error == 0 && dataset_name_hidden(zc->zc_name) && 1789 !(zc->zc_iflags & FKIOCTL)); 1790 dmu_objset_rele(os, FTAG); 1791 1792 /* 1793 * If it's an internal dataset (ie. with a '$' in its name), 1794 * don't try to get stats for it, otherwise we'll return ENOENT. 1795 */ 1796 if (error == 0 && strchr(zc->zc_name, '$') == NULL) 1797 error = zfs_ioc_objset_stats(zc); /* fill in the stats */ 1798 return (error); 1799 } 1800 1801 /* 1802 * inputs: 1803 * zc_name name of filesystem 1804 * zc_cookie zap cursor 1805 * zc_nvlist_dst_size size of buffer for property nvlist 1806 * 1807 * outputs: 1808 * zc_name name of next snapshot 1809 * zc_objset_stats stats 1810 * zc_nvlist_dst property nvlist 1811 * zc_nvlist_dst_size size of property nvlist 1812 */ 1813 static int 1814 zfs_ioc_snapshot_list_next(zfs_cmd_t *zc) 1815 { 1816 objset_t *os; 1817 int error; 1818 1819 if (zc->zc_cookie == 0) 1820 (void) dmu_objset_find(zc->zc_name, dmu_objset_prefetch, 1821 NULL, DS_FIND_SNAPSHOTS); 1822 1823 error = dmu_objset_hold(zc->zc_name, FTAG, &os); 1824 if (error) 1825 return (error == ENOENT ? ESRCH : error); 1826 1827 /* 1828 * A dataset name of maximum length cannot have any snapshots, 1829 * so exit immediately. 1830 */ 1831 if (strlcat(zc->zc_name, "@", sizeof (zc->zc_name)) >= MAXNAMELEN) { 1832 dmu_objset_rele(os, FTAG); 1833 return (ESRCH); 1834 } 1835 1836 error = dmu_snapshot_list_next(os, 1837 sizeof (zc->zc_name) - strlen(zc->zc_name), 1838 zc->zc_name + strlen(zc->zc_name), NULL, &zc->zc_cookie, NULL); 1839 dmu_objset_rele(os, FTAG); 1840 if (error == 0) 1841 error = zfs_ioc_objset_stats(zc); /* fill in the stats */ 1842 else if (error == ENOENT) 1843 error = ESRCH; 1844 1845 /* if we failed, undo the @ that we tacked on to zc_name */ 1846 if (error) 1847 *strchr(zc->zc_name, '@') = '\0'; 1848 return (error); 1849 } 1850 1851 static int 1852 zfs_prop_set_userquota(const char *dsname, nvpair_t *pair) 1853 { 1854 const char *propname = nvpair_name(pair); 1855 uint64_t *valary; 1856 unsigned int vallen; 1857 const char *domain; 1858 zfs_userquota_prop_t type; 1859 uint64_t rid; 1860 uint64_t quota; 1861 zfsvfs_t *zfsvfs; 1862 int err; 1863 1864 if (nvpair_type(pair) == DATA_TYPE_NVLIST) { 1865 nvlist_t *attrs; 1866 VERIFY(nvpair_value_nvlist(pair, &attrs) == 0); 1867 VERIFY(nvlist_lookup_nvpair(attrs, ZPROP_VALUE, 1868 &pair) == 0); 1869 } 1870 1871 VERIFY(nvpair_value_uint64_array(pair, &valary, &vallen) == 0); 1872 VERIFY(vallen == 3); 1873 type = valary[0]; 1874 rid = valary[1]; 1875 quota = valary[2]; 1876 /* 1877 * The propname is encoded as 1878 * userquota@<rid>-<domain>. 1879 */ 1880 domain = strchr(propname, '-') + 1; 1881 1882 err = zfsvfs_hold(dsname, FTAG, &zfsvfs); 1883 if (err == 0) { 1884 err = zfs_set_userquota(zfsvfs, type, domain, rid, quota); 1885 zfsvfs_rele(zfsvfs, FTAG); 1886 } 1887 1888 return (err); 1889 } 1890 1891 /* 1892 * If the named property is one that has a special function to set its value, 1893 * return 0 on success and a positive error code on failure; otherwise if it is 1894 * not one of the special properties handled by this function, return -1. 1895 * 1896 * XXX: It would be better for callers of the properety interface if we handled 1897 * these special cases in dsl_prop.c (in the dsl layer). 1898 */ 1899 static int 1900 zfs_prop_set_special(const char *dsname, zprop_source_t source, 1901 nvpair_t *pair) 1902 { 1903 const char *propname = nvpair_name(pair); 1904 zfs_prop_t prop = zfs_name_to_prop(propname); 1905 uint64_t intval; 1906 int err; 1907 1908 if (prop == ZPROP_INVAL) { 1909 if (zfs_prop_userquota(propname)) 1910 return (zfs_prop_set_userquota(dsname, pair)); 1911 return (-1); 1912 } 1913 1914 if (nvpair_type(pair) == DATA_TYPE_NVLIST) { 1915 nvlist_t *attrs; 1916 VERIFY(nvpair_value_nvlist(pair, &attrs) == 0); 1917 VERIFY(nvlist_lookup_nvpair(attrs, ZPROP_VALUE, 1918 &pair) == 0); 1919 } 1920 1921 if (zfs_prop_get_type(prop) == PROP_TYPE_STRING) 1922 return (-1); 1923 1924 VERIFY(0 == nvpair_value_uint64(pair, &intval)); 1925 1926 switch (prop) { 1927 case ZFS_PROP_QUOTA: 1928 err = dsl_dir_set_quota(dsname, source, intval); 1929 break; 1930 case ZFS_PROP_REFQUOTA: 1931 err = dsl_dataset_set_quota(dsname, source, intval); 1932 break; 1933 case ZFS_PROP_RESERVATION: 1934 err = dsl_dir_set_reservation(dsname, source, intval); 1935 break; 1936 case ZFS_PROP_REFRESERVATION: 1937 err = dsl_dataset_set_reservation(dsname, source, intval); 1938 break; 1939 case ZFS_PROP_VOLSIZE: 1940 err = zvol_set_volsize(dsname, ddi_driver_major(zfs_dip), 1941 intval); 1942 break; 1943 case ZFS_PROP_VERSION: 1944 { 1945 zfsvfs_t *zfsvfs; 1946 1947 if ((err = zfsvfs_hold(dsname, FTAG, &zfsvfs)) != 0) 1948 break; 1949 1950 err = zfs_set_version(zfsvfs, intval); 1951 zfsvfs_rele(zfsvfs, FTAG); 1952 1953 if (err == 0 && intval >= ZPL_VERSION_USERSPACE) { 1954 zfs_cmd_t *zc; 1955 1956 zc = kmem_zalloc(sizeof (zfs_cmd_t), KM_SLEEP); 1957 (void) strcpy(zc->zc_name, dsname); 1958 (void) zfs_ioc_userspace_upgrade(zc); 1959 kmem_free(zc, sizeof (zfs_cmd_t)); 1960 } 1961 break; 1962 } 1963 1964 default: 1965 err = -1; 1966 } 1967 1968 return (err); 1969 } 1970 1971 /* 1972 * This function is best effort. If it fails to set any of the given properties, 1973 * it continues to set as many as it can and returns the first error 1974 * encountered. If the caller provides a non-NULL errlist, it also gives the 1975 * complete list of names of all the properties it failed to set along with the 1976 * corresponding error numbers. The caller is responsible for freeing the 1977 * returned errlist. 1978 * 1979 * If every property is set successfully, zero is returned and the list pointed 1980 * at by errlist is NULL. 1981 */ 1982 int 1983 zfs_set_prop_nvlist(const char *dsname, zprop_source_t source, nvlist_t *nvl, 1984 nvlist_t **errlist) 1985 { 1986 nvpair_t *pair; 1987 nvpair_t *propval; 1988 int rv = 0; 1989 uint64_t intval; 1990 char *strval; 1991 nvlist_t *genericnvl; 1992 nvlist_t *errors; 1993 nvlist_t *retrynvl; 1994 1995 VERIFY(nvlist_alloc(&genericnvl, NV_UNIQUE_NAME, KM_SLEEP) == 0); 1996 VERIFY(nvlist_alloc(&errors, NV_UNIQUE_NAME, KM_SLEEP) == 0); 1997 VERIFY(nvlist_alloc(&retrynvl, NV_UNIQUE_NAME, KM_SLEEP) == 0); 1998 1999 retry: 2000 pair = NULL; 2001 while ((pair = nvlist_next_nvpair(nvl, pair)) != NULL) { 2002 const char *propname = nvpair_name(pair); 2003 zfs_prop_t prop = zfs_name_to_prop(propname); 2004 int err = 0; 2005 2006 /* decode the property value */ 2007 propval = pair; 2008 if (nvpair_type(pair) == DATA_TYPE_NVLIST) { 2009 nvlist_t *attrs; 2010 VERIFY(nvpair_value_nvlist(pair, &attrs) == 0); 2011 VERIFY(nvlist_lookup_nvpair(attrs, ZPROP_VALUE, 2012 &propval) == 0); 2013 } 2014 2015 /* Validate value type */ 2016 if (prop == ZPROP_INVAL) { 2017 if (zfs_prop_user(propname)) { 2018 if (nvpair_type(propval) != DATA_TYPE_STRING) 2019 err = EINVAL; 2020 } else if (zfs_prop_userquota(propname)) { 2021 if (nvpair_type(propval) != 2022 DATA_TYPE_UINT64_ARRAY) 2023 err = EINVAL; 2024 } 2025 } else { 2026 if (nvpair_type(propval) == DATA_TYPE_STRING) { 2027 if (zfs_prop_get_type(prop) != PROP_TYPE_STRING) 2028 err = EINVAL; 2029 } else if (nvpair_type(propval) == DATA_TYPE_UINT64) { 2030 const char *unused; 2031 2032 VERIFY(nvpair_value_uint64(propval, 2033 &intval) == 0); 2034 2035 switch (zfs_prop_get_type(prop)) { 2036 case PROP_TYPE_NUMBER: 2037 break; 2038 case PROP_TYPE_STRING: 2039 err = EINVAL; 2040 break; 2041 case PROP_TYPE_INDEX: 2042 if (zfs_prop_index_to_string(prop, 2043 intval, &unused) != 0) 2044 err = EINVAL; 2045 break; 2046 default: 2047 cmn_err(CE_PANIC, 2048 "unknown property type"); 2049 } 2050 } else { 2051 err = EINVAL; 2052 } 2053 } 2054 2055 /* Validate permissions */ 2056 if (err == 0) 2057 err = zfs_check_settable(dsname, pair, CRED()); 2058 2059 if (err == 0) { 2060 err = zfs_prop_set_special(dsname, source, pair); 2061 if (err == -1) { 2062 /* 2063 * For better performance we build up a list of 2064 * properties to set in a single transaction. 2065 */ 2066 err = nvlist_add_nvpair(genericnvl, pair); 2067 } else if (err != 0 && nvl != retrynvl) { 2068 /* 2069 * This may be a spurious error caused by 2070 * receiving quota and reservation out of order. 2071 * Try again in a second pass. 2072 */ 2073 err = nvlist_add_nvpair(retrynvl, pair); 2074 } 2075 } 2076 2077 if (err != 0) 2078 VERIFY(nvlist_add_int32(errors, propname, err) == 0); 2079 } 2080 2081 if (nvl != retrynvl && !nvlist_empty(retrynvl)) { 2082 nvl = retrynvl; 2083 goto retry; 2084 } 2085 2086 if (!nvlist_empty(genericnvl) && 2087 dsl_props_set(dsname, source, genericnvl) != 0) { 2088 /* 2089 * If this fails, we still want to set as many properties as we 2090 * can, so try setting them individually. 2091 */ 2092 pair = NULL; 2093 while ((pair = nvlist_next_nvpair(genericnvl, pair)) != NULL) { 2094 const char *propname = nvpair_name(pair); 2095 int err = 0; 2096 2097 propval = pair; 2098 if (nvpair_type(pair) == DATA_TYPE_NVLIST) { 2099 nvlist_t *attrs; 2100 VERIFY(nvpair_value_nvlist(pair, &attrs) == 0); 2101 VERIFY(nvlist_lookup_nvpair(attrs, ZPROP_VALUE, 2102 &propval) == 0); 2103 } 2104 2105 if (nvpair_type(propval) == DATA_TYPE_STRING) { 2106 VERIFY(nvpair_value_string(propval, 2107 &strval) == 0); 2108 err = dsl_prop_set(dsname, propname, source, 1, 2109 strlen(strval) + 1, strval); 2110 } else { 2111 VERIFY(nvpair_value_uint64(propval, 2112 &intval) == 0); 2113 err = dsl_prop_set(dsname, propname, source, 8, 2114 1, &intval); 2115 } 2116 2117 if (err != 0) { 2118 VERIFY(nvlist_add_int32(errors, propname, 2119 err) == 0); 2120 } 2121 } 2122 } 2123 nvlist_free(genericnvl); 2124 nvlist_free(retrynvl); 2125 2126 if ((pair = nvlist_next_nvpair(errors, NULL)) == NULL) { 2127 nvlist_free(errors); 2128 errors = NULL; 2129 } else { 2130 VERIFY(nvpair_value_int32(pair, &rv) == 0); 2131 } 2132 2133 if (errlist == NULL) 2134 nvlist_free(errors); 2135 else 2136 *errlist = errors; 2137 2138 return (rv); 2139 } 2140 2141 /* 2142 * Check that all the properties are valid user properties. 2143 */ 2144 static int 2145 zfs_check_userprops(char *fsname, nvlist_t *nvl) 2146 { 2147 nvpair_t *pair = NULL; 2148 int error = 0; 2149 2150 while ((pair = nvlist_next_nvpair(nvl, pair)) != NULL) { 2151 const char *propname = nvpair_name(pair); 2152 char *valstr; 2153 2154 if (!zfs_prop_user(propname) || 2155 nvpair_type(pair) != DATA_TYPE_STRING) 2156 return (EINVAL); 2157 2158 if (error = zfs_secpolicy_write_perms(fsname, 2159 ZFS_DELEG_PERM_USERPROP, CRED())) 2160 return (error); 2161 2162 if (strlen(propname) >= ZAP_MAXNAMELEN) 2163 return (ENAMETOOLONG); 2164 2165 VERIFY(nvpair_value_string(pair, &valstr) == 0); 2166 if (strlen(valstr) >= ZAP_MAXVALUELEN) 2167 return (E2BIG); 2168 } 2169 return (0); 2170 } 2171 2172 static void 2173 props_skip(nvlist_t *props, nvlist_t *skipped, nvlist_t **newprops) 2174 { 2175 nvpair_t *pair; 2176 2177 VERIFY(nvlist_alloc(newprops, NV_UNIQUE_NAME, KM_SLEEP) == 0); 2178 2179 pair = NULL; 2180 while ((pair = nvlist_next_nvpair(props, pair)) != NULL) { 2181 if (nvlist_exists(skipped, nvpair_name(pair))) 2182 continue; 2183 2184 VERIFY(nvlist_add_nvpair(*newprops, pair) == 0); 2185 } 2186 } 2187 2188 static int 2189 clear_received_props(objset_t *os, const char *fs, nvlist_t *props, 2190 nvlist_t *skipped) 2191 { 2192 int err = 0; 2193 nvlist_t *cleared_props = NULL; 2194 props_skip(props, skipped, &cleared_props); 2195 if (!nvlist_empty(cleared_props)) { 2196 /* 2197 * Acts on local properties until the dataset has received 2198 * properties at least once on or after SPA_VERSION_RECVD_PROPS. 2199 */ 2200 zprop_source_t flags = (ZPROP_SRC_NONE | 2201 (dsl_prop_get_hasrecvd(os) ? ZPROP_SRC_RECEIVED : 0)); 2202 err = zfs_set_prop_nvlist(fs, flags, cleared_props, NULL); 2203 } 2204 nvlist_free(cleared_props); 2205 return (err); 2206 } 2207 2208 /* 2209 * inputs: 2210 * zc_name name of filesystem 2211 * zc_value name of property to set 2212 * zc_nvlist_src{_size} nvlist of properties to apply 2213 * zc_cookie received properties flag 2214 * 2215 * outputs: 2216 * zc_nvlist_dst{_size} error for each unapplied received property 2217 */ 2218 static int 2219 zfs_ioc_set_prop(zfs_cmd_t *zc) 2220 { 2221 nvlist_t *nvl; 2222 boolean_t received = zc->zc_cookie; 2223 zprop_source_t source = (received ? ZPROP_SRC_RECEIVED : 2224 ZPROP_SRC_LOCAL); 2225 nvlist_t *errors = NULL; 2226 int error; 2227 2228 if ((error = get_nvlist(zc->zc_nvlist_src, zc->zc_nvlist_src_size, 2229 zc->zc_iflags, &nvl)) != 0) 2230 return (error); 2231 2232 if (received) { 2233 nvlist_t *origprops; 2234 objset_t *os; 2235 2236 if (dmu_objset_hold(zc->zc_name, FTAG, &os) == 0) { 2237 if (dsl_prop_get_received(os, &origprops) == 0) { 2238 (void) clear_received_props(os, 2239 zc->zc_name, origprops, nvl); 2240 nvlist_free(origprops); 2241 } 2242 2243 dsl_prop_set_hasrecvd(os); 2244 dmu_objset_rele(os, FTAG); 2245 } 2246 } 2247 2248 error = zfs_set_prop_nvlist(zc->zc_name, source, nvl, &errors); 2249 2250 if (zc->zc_nvlist_dst != NULL && errors != NULL) { 2251 (void) put_nvlist(zc, errors); 2252 } 2253 2254 nvlist_free(errors); 2255 nvlist_free(nvl); 2256 return (error); 2257 } 2258 2259 /* 2260 * inputs: 2261 * zc_name name of filesystem 2262 * zc_value name of property to inherit 2263 * zc_cookie revert to received value if TRUE 2264 * 2265 * outputs: none 2266 */ 2267 static int 2268 zfs_ioc_inherit_prop(zfs_cmd_t *zc) 2269 { 2270 const char *propname = zc->zc_value; 2271 zfs_prop_t prop = zfs_name_to_prop(propname); 2272 boolean_t received = zc->zc_cookie; 2273 zprop_source_t source = (received 2274 ? ZPROP_SRC_NONE /* revert to received value, if any */ 2275 : ZPROP_SRC_INHERITED); /* explicitly inherit */ 2276 2277 if (received) { 2278 nvlist_t *dummy; 2279 nvpair_t *pair; 2280 zprop_type_t type; 2281 int err; 2282 2283 /* 2284 * zfs_prop_set_special() expects properties in the form of an 2285 * nvpair with type info. 2286 */ 2287 if (prop == ZPROP_INVAL) { 2288 if (!zfs_prop_user(propname)) 2289 return (EINVAL); 2290 2291 type = PROP_TYPE_STRING; 2292 } else { 2293 type = zfs_prop_get_type(prop); 2294 } 2295 2296 VERIFY(nvlist_alloc(&dummy, NV_UNIQUE_NAME, KM_SLEEP) == 0); 2297 2298 switch (type) { 2299 case PROP_TYPE_STRING: 2300 VERIFY(0 == nvlist_add_string(dummy, propname, "")); 2301 break; 2302 case PROP_TYPE_NUMBER: 2303 case PROP_TYPE_INDEX: 2304 VERIFY(0 == nvlist_add_uint64(dummy, propname, 0)); 2305 break; 2306 default: 2307 nvlist_free(dummy); 2308 return (EINVAL); 2309 } 2310 2311 pair = nvlist_next_nvpair(dummy, NULL); 2312 err = zfs_prop_set_special(zc->zc_name, source, pair); 2313 nvlist_free(dummy); 2314 if (err != -1) 2315 return (err); /* special property already handled */ 2316 } else { 2317 /* 2318 * Only check this in the non-received case. We want to allow 2319 * 'inherit -S' to revert non-inheritable properties like quota 2320 * and reservation to the received or default values even though 2321 * they are not considered inheritable. 2322 */ 2323 if (prop != ZPROP_INVAL && !zfs_prop_inheritable(prop)) 2324 return (EINVAL); 2325 } 2326 2327 /* the property name has been validated by zfs_secpolicy_inherit() */ 2328 return (dsl_prop_set(zc->zc_name, zc->zc_value, source, 0, 0, NULL)); 2329 } 2330 2331 static int 2332 zfs_ioc_pool_set_props(zfs_cmd_t *zc) 2333 { 2334 nvlist_t *props; 2335 spa_t *spa; 2336 int error; 2337 nvpair_t *pair; 2338 2339 if (error = get_nvlist(zc->zc_nvlist_src, zc->zc_nvlist_src_size, 2340 zc->zc_iflags, &props)) 2341 return (error); 2342 2343 /* 2344 * If the only property is the configfile, then just do a spa_lookup() 2345 * to handle the faulted case. 2346 */ 2347 pair = nvlist_next_nvpair(props, NULL); 2348 if (pair != NULL && strcmp(nvpair_name(pair), 2349 zpool_prop_to_name(ZPOOL_PROP_CACHEFILE)) == 0 && 2350 nvlist_next_nvpair(props, pair) == NULL) { 2351 mutex_enter(&spa_namespace_lock); 2352 if ((spa = spa_lookup(zc->zc_name)) != NULL) { 2353 spa_configfile_set(spa, props, B_FALSE); 2354 spa_config_sync(spa, B_FALSE, B_TRUE); 2355 } 2356 mutex_exit(&spa_namespace_lock); 2357 if (spa != NULL) { 2358 nvlist_free(props); 2359 return (0); 2360 } 2361 } 2362 2363 if ((error = spa_open(zc->zc_name, &spa, FTAG)) != 0) { 2364 nvlist_free(props); 2365 return (error); 2366 } 2367 2368 error = spa_prop_set(spa, props); 2369 2370 nvlist_free(props); 2371 spa_close(spa, FTAG); 2372 2373 return (error); 2374 } 2375 2376 static int 2377 zfs_ioc_pool_get_props(zfs_cmd_t *zc) 2378 { 2379 spa_t *spa; 2380 int error; 2381 nvlist_t *nvp = NULL; 2382 2383 if ((error = spa_open(zc->zc_name, &spa, FTAG)) != 0) { 2384 /* 2385 * If the pool is faulted, there may be properties we can still 2386 * get (such as altroot and cachefile), so attempt to get them 2387 * anyway. 2388 */ 2389 mutex_enter(&spa_namespace_lock); 2390 if ((spa = spa_lookup(zc->zc_name)) != NULL) 2391 error = spa_prop_get(spa, &nvp); 2392 mutex_exit(&spa_namespace_lock); 2393 } else { 2394 error = spa_prop_get(spa, &nvp); 2395 spa_close(spa, FTAG); 2396 } 2397 2398 if (error == 0 && zc->zc_nvlist_dst != NULL) 2399 error = put_nvlist(zc, nvp); 2400 else 2401 error = EFAULT; 2402 2403 nvlist_free(nvp); 2404 return (error); 2405 } 2406 2407 static int 2408 zfs_ioc_iscsi_perm_check(zfs_cmd_t *zc) 2409 { 2410 nvlist_t *nvp; 2411 int error; 2412 uint32_t uid; 2413 uint32_t gid; 2414 uint32_t *groups; 2415 uint_t group_cnt; 2416 cred_t *usercred; 2417 2418 if ((error = get_nvlist(zc->zc_nvlist_src, zc->zc_nvlist_src_size, 2419 zc->zc_iflags, &nvp)) != 0) { 2420 return (error); 2421 } 2422 2423 if ((error = nvlist_lookup_uint32(nvp, 2424 ZFS_DELEG_PERM_UID, &uid)) != 0) { 2425 nvlist_free(nvp); 2426 return (EPERM); 2427 } 2428 2429 if ((error = nvlist_lookup_uint32(nvp, 2430 ZFS_DELEG_PERM_GID, &gid)) != 0) { 2431 nvlist_free(nvp); 2432 return (EPERM); 2433 } 2434 2435 if ((error = nvlist_lookup_uint32_array(nvp, ZFS_DELEG_PERM_GROUPS, 2436 &groups, &group_cnt)) != 0) { 2437 nvlist_free(nvp); 2438 return (EPERM); 2439 } 2440 usercred = cralloc(); 2441 if ((crsetugid(usercred, uid, gid) != 0) || 2442 (crsetgroups(usercred, group_cnt, (gid_t *)groups) != 0)) { 2443 nvlist_free(nvp); 2444 crfree(usercred); 2445 return (EPERM); 2446 } 2447 nvlist_free(nvp); 2448 error = dsl_deleg_access(zc->zc_name, 2449 zfs_prop_to_name(ZFS_PROP_SHAREISCSI), usercred); 2450 crfree(usercred); 2451 return (error); 2452 } 2453 2454 /* 2455 * inputs: 2456 * zc_name name of filesystem 2457 * zc_nvlist_src{_size} nvlist of delegated permissions 2458 * zc_perm_action allow/unallow flag 2459 * 2460 * outputs: none 2461 */ 2462 static int 2463 zfs_ioc_set_fsacl(zfs_cmd_t *zc) 2464 { 2465 int error; 2466 nvlist_t *fsaclnv = NULL; 2467 2468 if ((error = get_nvlist(zc->zc_nvlist_src, zc->zc_nvlist_src_size, 2469 zc->zc_iflags, &fsaclnv)) != 0) 2470 return (error); 2471 2472 /* 2473 * Verify nvlist is constructed correctly 2474 */ 2475 if ((error = zfs_deleg_verify_nvlist(fsaclnv)) != 0) { 2476 nvlist_free(fsaclnv); 2477 return (EINVAL); 2478 } 2479 2480 /* 2481 * If we don't have PRIV_SYS_MOUNT, then validate 2482 * that user is allowed to hand out each permission in 2483 * the nvlist(s) 2484 */ 2485 2486 error = secpolicy_zfs(CRED()); 2487 if (error) { 2488 if (zc->zc_perm_action == B_FALSE) { 2489 error = dsl_deleg_can_allow(zc->zc_name, 2490 fsaclnv, CRED()); 2491 } else { 2492 error = dsl_deleg_can_unallow(zc->zc_name, 2493 fsaclnv, CRED()); 2494 } 2495 } 2496 2497 if (error == 0) 2498 error = dsl_deleg_set(zc->zc_name, fsaclnv, zc->zc_perm_action); 2499 2500 nvlist_free(fsaclnv); 2501 return (error); 2502 } 2503 2504 /* 2505 * inputs: 2506 * zc_name name of filesystem 2507 * 2508 * outputs: 2509 * zc_nvlist_src{_size} nvlist of delegated permissions 2510 */ 2511 static int 2512 zfs_ioc_get_fsacl(zfs_cmd_t *zc) 2513 { 2514 nvlist_t *nvp; 2515 int error; 2516 2517 if ((error = dsl_deleg_get(zc->zc_name, &nvp)) == 0) { 2518 error = put_nvlist(zc, nvp); 2519 nvlist_free(nvp); 2520 } 2521 2522 return (error); 2523 } 2524 2525 /* 2526 * Search the vfs list for a specified resource. Returns a pointer to it 2527 * or NULL if no suitable entry is found. The caller of this routine 2528 * is responsible for releasing the returned vfs pointer. 2529 */ 2530 static vfs_t * 2531 zfs_get_vfs(const char *resource) 2532 { 2533 struct vfs *vfsp; 2534 struct vfs *vfs_found = NULL; 2535 2536 vfs_list_read_lock(); 2537 vfsp = rootvfs; 2538 do { 2539 if (strcmp(refstr_value(vfsp->vfs_resource), resource) == 0) { 2540 VFS_HOLD(vfsp); 2541 vfs_found = vfsp; 2542 break; 2543 } 2544 vfsp = vfsp->vfs_next; 2545 } while (vfsp != rootvfs); 2546 vfs_list_unlock(); 2547 return (vfs_found); 2548 } 2549 2550 /* ARGSUSED */ 2551 static void 2552 zfs_create_cb(objset_t *os, void *arg, cred_t *cr, dmu_tx_t *tx) 2553 { 2554 zfs_creat_t *zct = arg; 2555 2556 zfs_create_fs(os, cr, zct->zct_zplprops, tx); 2557 } 2558 2559 #define ZFS_PROP_UNDEFINED ((uint64_t)-1) 2560 2561 /* 2562 * inputs: 2563 * createprops list of properties requested by creator 2564 * default_zplver zpl version to use if unspecified in createprops 2565 * fuids_ok fuids allowed in this version of the spa? 2566 * os parent objset pointer (NULL if root fs) 2567 * 2568 * outputs: 2569 * zplprops values for the zplprops we attach to the master node object 2570 * is_ci true if requested file system will be purely case-insensitive 2571 * 2572 * Determine the settings for utf8only, normalization and 2573 * casesensitivity. Specific values may have been requested by the 2574 * creator and/or we can inherit values from the parent dataset. If 2575 * the file system is of too early a vintage, a creator can not 2576 * request settings for these properties, even if the requested 2577 * setting is the default value. We don't actually want to create dsl 2578 * properties for these, so remove them from the source nvlist after 2579 * processing. 2580 */ 2581 static int 2582 zfs_fill_zplprops_impl(objset_t *os, uint64_t zplver, 2583 boolean_t fuids_ok, nvlist_t *createprops, nvlist_t *zplprops, 2584 boolean_t *is_ci) 2585 { 2586 uint64_t sense = ZFS_PROP_UNDEFINED; 2587 uint64_t norm = ZFS_PROP_UNDEFINED; 2588 uint64_t u8 = ZFS_PROP_UNDEFINED; 2589 2590 ASSERT(zplprops != NULL); 2591 2592 /* 2593 * Pull out creator prop choices, if any. 2594 */ 2595 if (createprops) { 2596 (void) nvlist_lookup_uint64(createprops, 2597 zfs_prop_to_name(ZFS_PROP_VERSION), &zplver); 2598 (void) nvlist_lookup_uint64(createprops, 2599 zfs_prop_to_name(ZFS_PROP_NORMALIZE), &norm); 2600 (void) nvlist_remove_all(createprops, 2601 zfs_prop_to_name(ZFS_PROP_NORMALIZE)); 2602 (void) nvlist_lookup_uint64(createprops, 2603 zfs_prop_to_name(ZFS_PROP_UTF8ONLY), &u8); 2604 (void) nvlist_remove_all(createprops, 2605 zfs_prop_to_name(ZFS_PROP_UTF8ONLY)); 2606 (void) nvlist_lookup_uint64(createprops, 2607 zfs_prop_to_name(ZFS_PROP_CASE), &sense); 2608 (void) nvlist_remove_all(createprops, 2609 zfs_prop_to_name(ZFS_PROP_CASE)); 2610 } 2611 2612 /* 2613 * If the zpl version requested is whacky or the file system 2614 * or pool is version is too "young" to support normalization 2615 * and the creator tried to set a value for one of the props, 2616 * error out. 2617 */ 2618 if ((zplver < ZPL_VERSION_INITIAL || zplver > ZPL_VERSION) || 2619 (zplver >= ZPL_VERSION_FUID && !fuids_ok) || 2620 (zplver < ZPL_VERSION_NORMALIZATION && 2621 (norm != ZFS_PROP_UNDEFINED || u8 != ZFS_PROP_UNDEFINED || 2622 sense != ZFS_PROP_UNDEFINED))) 2623 return (ENOTSUP); 2624 2625 /* 2626 * Put the version in the zplprops 2627 */ 2628 VERIFY(nvlist_add_uint64(zplprops, 2629 zfs_prop_to_name(ZFS_PROP_VERSION), zplver) == 0); 2630 2631 if (norm == ZFS_PROP_UNDEFINED) 2632 VERIFY(zfs_get_zplprop(os, ZFS_PROP_NORMALIZE, &norm) == 0); 2633 VERIFY(nvlist_add_uint64(zplprops, 2634 zfs_prop_to_name(ZFS_PROP_NORMALIZE), norm) == 0); 2635 2636 /* 2637 * If we're normalizing, names must always be valid UTF-8 strings. 2638 */ 2639 if (norm) 2640 u8 = 1; 2641 if (u8 == ZFS_PROP_UNDEFINED) 2642 VERIFY(zfs_get_zplprop(os, ZFS_PROP_UTF8ONLY, &u8) == 0); 2643 VERIFY(nvlist_add_uint64(zplprops, 2644 zfs_prop_to_name(ZFS_PROP_UTF8ONLY), u8) == 0); 2645 2646 if (sense == ZFS_PROP_UNDEFINED) 2647 VERIFY(zfs_get_zplprop(os, ZFS_PROP_CASE, &sense) == 0); 2648 VERIFY(nvlist_add_uint64(zplprops, 2649 zfs_prop_to_name(ZFS_PROP_CASE), sense) == 0); 2650 2651 if (is_ci) 2652 *is_ci = (sense == ZFS_CASE_INSENSITIVE); 2653 2654 return (0); 2655 } 2656 2657 static int 2658 zfs_fill_zplprops(const char *dataset, nvlist_t *createprops, 2659 nvlist_t *zplprops, boolean_t *is_ci) 2660 { 2661 boolean_t fuids_ok = B_TRUE; 2662 uint64_t zplver = ZPL_VERSION; 2663 objset_t *os = NULL; 2664 char parentname[MAXNAMELEN]; 2665 char *cp; 2666 int error; 2667 2668 (void) strlcpy(parentname, dataset, sizeof (parentname)); 2669 cp = strrchr(parentname, '/'); 2670 ASSERT(cp != NULL); 2671 cp[0] = '\0'; 2672 2673 if (zfs_earlier_version(dataset, SPA_VERSION_USERSPACE)) 2674 zplver = ZPL_VERSION_USERSPACE - 1; 2675 if (zfs_earlier_version(dataset, SPA_VERSION_FUID)) { 2676 zplver = ZPL_VERSION_FUID - 1; 2677 fuids_ok = B_FALSE; 2678 } 2679 2680 /* 2681 * Open parent object set so we can inherit zplprop values. 2682 */ 2683 if ((error = dmu_objset_hold(parentname, FTAG, &os)) != 0) 2684 return (error); 2685 2686 error = zfs_fill_zplprops_impl(os, zplver, fuids_ok, createprops, 2687 zplprops, is_ci); 2688 dmu_objset_rele(os, FTAG); 2689 return (error); 2690 } 2691 2692 static int 2693 zfs_fill_zplprops_root(uint64_t spa_vers, nvlist_t *createprops, 2694 nvlist_t *zplprops, boolean_t *is_ci) 2695 { 2696 boolean_t fuids_ok = B_TRUE; 2697 uint64_t zplver = ZPL_VERSION; 2698 int error; 2699 2700 if (spa_vers < SPA_VERSION_FUID) { 2701 zplver = ZPL_VERSION_FUID - 1; 2702 fuids_ok = B_FALSE; 2703 } 2704 2705 error = zfs_fill_zplprops_impl(NULL, zplver, fuids_ok, createprops, 2706 zplprops, is_ci); 2707 return (error); 2708 } 2709 2710 /* 2711 * inputs: 2712 * zc_objset_type type of objset to create (fs vs zvol) 2713 * zc_name name of new objset 2714 * zc_value name of snapshot to clone from (may be empty) 2715 * zc_nvlist_src{_size} nvlist of properties to apply 2716 * 2717 * outputs: none 2718 */ 2719 static int 2720 zfs_ioc_create(zfs_cmd_t *zc) 2721 { 2722 objset_t *clone; 2723 int error = 0; 2724 zfs_creat_t zct; 2725 nvlist_t *nvprops = NULL; 2726 void (*cbfunc)(objset_t *os, void *arg, cred_t *cr, dmu_tx_t *tx); 2727 dmu_objset_type_t type = zc->zc_objset_type; 2728 2729 switch (type) { 2730 2731 case DMU_OST_ZFS: 2732 cbfunc = zfs_create_cb; 2733 break; 2734 2735 case DMU_OST_ZVOL: 2736 cbfunc = zvol_create_cb; 2737 break; 2738 2739 default: 2740 cbfunc = NULL; 2741 break; 2742 } 2743 if (strchr(zc->zc_name, '@') || 2744 strchr(zc->zc_name, '%')) 2745 return (EINVAL); 2746 2747 if (zc->zc_nvlist_src != NULL && 2748 (error = get_nvlist(zc->zc_nvlist_src, zc->zc_nvlist_src_size, 2749 zc->zc_iflags, &nvprops)) != 0) 2750 return (error); 2751 2752 zct.zct_zplprops = NULL; 2753 zct.zct_props = nvprops; 2754 2755 if (zc->zc_value[0] != '\0') { 2756 /* 2757 * We're creating a clone of an existing snapshot. 2758 */ 2759 zc->zc_value[sizeof (zc->zc_value) - 1] = '\0'; 2760 if (dataset_namecheck(zc->zc_value, NULL, NULL) != 0) { 2761 nvlist_free(nvprops); 2762 return (EINVAL); 2763 } 2764 2765 error = dmu_objset_hold(zc->zc_value, FTAG, &clone); 2766 if (error) { 2767 nvlist_free(nvprops); 2768 return (error); 2769 } 2770 2771 error = dmu_objset_clone(zc->zc_name, dmu_objset_ds(clone), 0); 2772 dmu_objset_rele(clone, FTAG); 2773 if (error) { 2774 nvlist_free(nvprops); 2775 return (error); 2776 } 2777 } else { 2778 boolean_t is_insensitive = B_FALSE; 2779 2780 if (cbfunc == NULL) { 2781 nvlist_free(nvprops); 2782 return (EINVAL); 2783 } 2784 2785 if (type == DMU_OST_ZVOL) { 2786 uint64_t volsize, volblocksize; 2787 2788 if (nvprops == NULL || 2789 nvlist_lookup_uint64(nvprops, 2790 zfs_prop_to_name(ZFS_PROP_VOLSIZE), 2791 &volsize) != 0) { 2792 nvlist_free(nvprops); 2793 return (EINVAL); 2794 } 2795 2796 if ((error = nvlist_lookup_uint64(nvprops, 2797 zfs_prop_to_name(ZFS_PROP_VOLBLOCKSIZE), 2798 &volblocksize)) != 0 && error != ENOENT) { 2799 nvlist_free(nvprops); 2800 return (EINVAL); 2801 } 2802 2803 if (error != 0) 2804 volblocksize = zfs_prop_default_numeric( 2805 ZFS_PROP_VOLBLOCKSIZE); 2806 2807 if ((error = zvol_check_volblocksize( 2808 volblocksize)) != 0 || 2809 (error = zvol_check_volsize(volsize, 2810 volblocksize)) != 0) { 2811 nvlist_free(nvprops); 2812 return (error); 2813 } 2814 } else if (type == DMU_OST_ZFS) { 2815 int error; 2816 2817 /* 2818 * We have to have normalization and 2819 * case-folding flags correct when we do the 2820 * file system creation, so go figure them out 2821 * now. 2822 */ 2823 VERIFY(nvlist_alloc(&zct.zct_zplprops, 2824 NV_UNIQUE_NAME, KM_SLEEP) == 0); 2825 error = zfs_fill_zplprops(zc->zc_name, nvprops, 2826 zct.zct_zplprops, &is_insensitive); 2827 if (error != 0) { 2828 nvlist_free(nvprops); 2829 nvlist_free(zct.zct_zplprops); 2830 return (error); 2831 } 2832 } 2833 error = dmu_objset_create(zc->zc_name, type, 2834 is_insensitive ? DS_FLAG_CI_DATASET : 0, cbfunc, &zct); 2835 nvlist_free(zct.zct_zplprops); 2836 } 2837 2838 /* 2839 * It would be nice to do this atomically. 2840 */ 2841 if (error == 0) { 2842 error = zfs_set_prop_nvlist(zc->zc_name, ZPROP_SRC_LOCAL, 2843 nvprops, NULL); 2844 if (error != 0) 2845 (void) dmu_objset_destroy(zc->zc_name, B_FALSE); 2846 } 2847 nvlist_free(nvprops); 2848 return (error); 2849 } 2850 2851 /* 2852 * inputs: 2853 * zc_name name of filesystem 2854 * zc_value short name of snapshot 2855 * zc_cookie recursive flag 2856 * zc_nvlist_src[_size] property list 2857 * 2858 * outputs: 2859 * zc_value short snapname (i.e. part after the '@') 2860 */ 2861 static int 2862 zfs_ioc_snapshot(zfs_cmd_t *zc) 2863 { 2864 nvlist_t *nvprops = NULL; 2865 int error; 2866 boolean_t recursive = zc->zc_cookie; 2867 2868 if (snapshot_namecheck(zc->zc_value, NULL, NULL) != 0) 2869 return (EINVAL); 2870 2871 if (zc->zc_nvlist_src != NULL && 2872 (error = get_nvlist(zc->zc_nvlist_src, zc->zc_nvlist_src_size, 2873 zc->zc_iflags, &nvprops)) != 0) 2874 return (error); 2875 2876 error = zfs_check_userprops(zc->zc_name, nvprops); 2877 if (error) 2878 goto out; 2879 2880 if (!nvlist_empty(nvprops) && 2881 zfs_earlier_version(zc->zc_name, SPA_VERSION_SNAP_PROPS)) { 2882 error = ENOTSUP; 2883 goto out; 2884 } 2885 2886 error = dmu_objset_snapshot(zc->zc_name, zc->zc_value, 2887 nvprops, recursive); 2888 2889 out: 2890 nvlist_free(nvprops); 2891 return (error); 2892 } 2893 2894 int 2895 zfs_unmount_snap(const char *name, void *arg) 2896 { 2897 vfs_t *vfsp = NULL; 2898 2899 if (arg) { 2900 char *snapname = arg; 2901 char *fullname = kmem_asprintf("%s@%s", name, snapname); 2902 vfsp = zfs_get_vfs(fullname); 2903 strfree(fullname); 2904 } else if (strchr(name, '@')) { 2905 vfsp = zfs_get_vfs(name); 2906 } 2907 2908 if (vfsp) { 2909 /* 2910 * Always force the unmount for snapshots. 2911 */ 2912 int flag = MS_FORCE; 2913 int err; 2914 2915 if ((err = vn_vfswlock(vfsp->vfs_vnodecovered)) != 0) { 2916 VFS_RELE(vfsp); 2917 return (err); 2918 } 2919 VFS_RELE(vfsp); 2920 if ((err = dounmount(vfsp, flag, kcred)) != 0) 2921 return (err); 2922 } 2923 return (0); 2924 } 2925 2926 /* 2927 * inputs: 2928 * zc_name name of filesystem 2929 * zc_value short name of snapshot 2930 * zc_defer_destroy mark for deferred destroy 2931 * 2932 * outputs: none 2933 */ 2934 static int 2935 zfs_ioc_destroy_snaps(zfs_cmd_t *zc) 2936 { 2937 int err; 2938 2939 if (snapshot_namecheck(zc->zc_value, NULL, NULL) != 0) 2940 return (EINVAL); 2941 err = dmu_objset_find(zc->zc_name, 2942 zfs_unmount_snap, zc->zc_value, DS_FIND_CHILDREN); 2943 if (err) 2944 return (err); 2945 return (dmu_snapshots_destroy(zc->zc_name, zc->zc_value, 2946 zc->zc_defer_destroy)); 2947 } 2948 2949 /* 2950 * inputs: 2951 * zc_name name of dataset to destroy 2952 * zc_objset_type type of objset 2953 * zc_defer_destroy mark for deferred destroy 2954 * 2955 * outputs: none 2956 */ 2957 static int 2958 zfs_ioc_destroy(zfs_cmd_t *zc) 2959 { 2960 int err; 2961 if (strchr(zc->zc_name, '@') && zc->zc_objset_type == DMU_OST_ZFS) { 2962 err = zfs_unmount_snap(zc->zc_name, NULL); 2963 if (err) 2964 return (err); 2965 } 2966 2967 err = dmu_objset_destroy(zc->zc_name, zc->zc_defer_destroy); 2968 if (zc->zc_objset_type == DMU_OST_ZVOL && err == 0) 2969 (void) zvol_remove_minor(zc->zc_name); 2970 return (err); 2971 } 2972 2973 /* 2974 * inputs: 2975 * zc_name name of dataset to rollback (to most recent snapshot) 2976 * 2977 * outputs: none 2978 */ 2979 static int 2980 zfs_ioc_rollback(zfs_cmd_t *zc) 2981 { 2982 dsl_dataset_t *ds, *clone; 2983 int error; 2984 zfsvfs_t *zfsvfs; 2985 char *clone_name; 2986 2987 error = dsl_dataset_hold(zc->zc_name, FTAG, &ds); 2988 if (error) 2989 return (error); 2990 2991 /* must not be a snapshot */ 2992 if (dsl_dataset_is_snapshot(ds)) { 2993 dsl_dataset_rele(ds, FTAG); 2994 return (EINVAL); 2995 } 2996 2997 /* must have a most recent snapshot */ 2998 if (ds->ds_phys->ds_prev_snap_txg < TXG_INITIAL) { 2999 dsl_dataset_rele(ds, FTAG); 3000 return (EINVAL); 3001 } 3002 3003 /* 3004 * Create clone of most recent snapshot. 3005 */ 3006 clone_name = kmem_asprintf("%s/%%rollback", zc->zc_name); 3007 error = dmu_objset_clone(clone_name, ds->ds_prev, DS_FLAG_INCONSISTENT); 3008 if (error) 3009 goto out; 3010 3011 error = dsl_dataset_own(clone_name, B_TRUE, FTAG, &clone); 3012 if (error) 3013 goto out; 3014 3015 /* 3016 * Do clone swap. 3017 */ 3018 if (getzfsvfs(zc->zc_name, &zfsvfs) == 0) { 3019 error = zfs_suspend_fs(zfsvfs); 3020 if (error == 0) { 3021 int resume_err; 3022 3023 if (dsl_dataset_tryown(ds, B_FALSE, FTAG)) { 3024 error = dsl_dataset_clone_swap(clone, ds, 3025 B_TRUE); 3026 dsl_dataset_disown(ds, FTAG); 3027 ds = NULL; 3028 } else { 3029 error = EBUSY; 3030 } 3031 resume_err = zfs_resume_fs(zfsvfs, zc->zc_name); 3032 error = error ? error : resume_err; 3033 } 3034 VFS_RELE(zfsvfs->z_vfs); 3035 } else { 3036 if (dsl_dataset_tryown(ds, B_FALSE, FTAG)) { 3037 error = dsl_dataset_clone_swap(clone, ds, B_TRUE); 3038 dsl_dataset_disown(ds, FTAG); 3039 ds = NULL; 3040 } else { 3041 error = EBUSY; 3042 } 3043 } 3044 3045 /* 3046 * Destroy clone (which also closes it). 3047 */ 3048 (void) dsl_dataset_destroy(clone, FTAG, B_FALSE); 3049 3050 out: 3051 strfree(clone_name); 3052 if (ds) 3053 dsl_dataset_rele(ds, FTAG); 3054 return (error); 3055 } 3056 3057 /* 3058 * inputs: 3059 * zc_name old name of dataset 3060 * zc_value new name of dataset 3061 * zc_cookie recursive flag (only valid for snapshots) 3062 * 3063 * outputs: none 3064 */ 3065 static int 3066 zfs_ioc_rename(zfs_cmd_t *zc) 3067 { 3068 boolean_t recursive = zc->zc_cookie & 1; 3069 3070 zc->zc_value[sizeof (zc->zc_value) - 1] = '\0'; 3071 if (dataset_namecheck(zc->zc_value, NULL, NULL) != 0 || 3072 strchr(zc->zc_value, '%')) 3073 return (EINVAL); 3074 3075 /* 3076 * Unmount snapshot unless we're doing a recursive rename, 3077 * in which case the dataset code figures out which snapshots 3078 * to unmount. 3079 */ 3080 if (!recursive && strchr(zc->zc_name, '@') != NULL && 3081 zc->zc_objset_type == DMU_OST_ZFS) { 3082 int err = zfs_unmount_snap(zc->zc_name, NULL); 3083 if (err) 3084 return (err); 3085 } 3086 if (zc->zc_objset_type == DMU_OST_ZVOL) 3087 (void) zvol_remove_minor(zc->zc_name); 3088 return (dmu_objset_rename(zc->zc_name, zc->zc_value, recursive)); 3089 } 3090 3091 static int 3092 zfs_check_settable(const char *dsname, nvpair_t *pair, cred_t *cr) 3093 { 3094 const char *propname = nvpair_name(pair); 3095 boolean_t issnap = (strchr(dsname, '@') != NULL); 3096 zfs_prop_t prop = zfs_name_to_prop(propname); 3097 uint64_t intval; 3098 int err; 3099 3100 if (prop == ZPROP_INVAL) { 3101 if (zfs_prop_user(propname)) { 3102 if (err = zfs_secpolicy_write_perms(dsname, 3103 ZFS_DELEG_PERM_USERPROP, cr)) 3104 return (err); 3105 return (0); 3106 } 3107 3108 if (!issnap && zfs_prop_userquota(propname)) { 3109 const char *perm = NULL; 3110 const char *uq_prefix = 3111 zfs_userquota_prop_prefixes[ZFS_PROP_USERQUOTA]; 3112 const char *gq_prefix = 3113 zfs_userquota_prop_prefixes[ZFS_PROP_GROUPQUOTA]; 3114 3115 if (strncmp(propname, uq_prefix, 3116 strlen(uq_prefix)) == 0) { 3117 perm = ZFS_DELEG_PERM_USERQUOTA; 3118 } else if (strncmp(propname, gq_prefix, 3119 strlen(gq_prefix)) == 0) { 3120 perm = ZFS_DELEG_PERM_GROUPQUOTA; 3121 } else { 3122 /* USERUSED and GROUPUSED are read-only */ 3123 return (EINVAL); 3124 } 3125 3126 if (err = zfs_secpolicy_write_perms(dsname, perm, cr)) 3127 return (err); 3128 return (0); 3129 } 3130 3131 return (EINVAL); 3132 } 3133 3134 if (issnap) 3135 return (EINVAL); 3136 3137 if (nvpair_type(pair) == DATA_TYPE_NVLIST) { 3138 /* 3139 * dsl_prop_get_all_impl() returns properties in this 3140 * format. 3141 */ 3142 nvlist_t *attrs; 3143 VERIFY(nvpair_value_nvlist(pair, &attrs) == 0); 3144 VERIFY(nvlist_lookup_nvpair(attrs, ZPROP_VALUE, 3145 &pair) == 0); 3146 } 3147 3148 /* 3149 * Check that this value is valid for this pool version 3150 */ 3151 switch (prop) { 3152 case ZFS_PROP_COMPRESSION: 3153 /* 3154 * If the user specified gzip compression, make sure 3155 * the SPA supports it. We ignore any errors here since 3156 * we'll catch them later. 3157 */ 3158 if (nvpair_type(pair) == DATA_TYPE_UINT64 && 3159 nvpair_value_uint64(pair, &intval) == 0) { 3160 if (intval >= ZIO_COMPRESS_GZIP_1 && 3161 intval <= ZIO_COMPRESS_GZIP_9 && 3162 zfs_earlier_version(dsname, 3163 SPA_VERSION_GZIP_COMPRESSION)) { 3164 return (ENOTSUP); 3165 } 3166 3167 if (intval == ZIO_COMPRESS_ZLE && 3168 zfs_earlier_version(dsname, 3169 SPA_VERSION_ZLE_COMPRESSION)) 3170 return (ENOTSUP); 3171 3172 /* 3173 * If this is a bootable dataset then 3174 * verify that the compression algorithm 3175 * is supported for booting. We must return 3176 * something other than ENOTSUP since it 3177 * implies a downrev pool version. 3178 */ 3179 if (zfs_is_bootfs(dsname) && 3180 !BOOTFS_COMPRESS_VALID(intval)) { 3181 return (ERANGE); 3182 } 3183 } 3184 break; 3185 3186 case ZFS_PROP_COPIES: 3187 if (zfs_earlier_version(dsname, SPA_VERSION_DITTO_BLOCKS)) 3188 return (ENOTSUP); 3189 break; 3190 3191 case ZFS_PROP_DEDUP: 3192 if (zfs_earlier_version(dsname, SPA_VERSION_DEDUP)) 3193 return (ENOTSUP); 3194 break; 3195 3196 case ZFS_PROP_SHARESMB: 3197 if (zpl_earlier_version(dsname, ZPL_VERSION_FUID)) 3198 return (ENOTSUP); 3199 break; 3200 3201 case ZFS_PROP_ACLINHERIT: 3202 if (nvpair_type(pair) == DATA_TYPE_UINT64 && 3203 nvpair_value_uint64(pair, &intval) == 0) { 3204 if (intval == ZFS_ACL_PASSTHROUGH_X && 3205 zfs_earlier_version(dsname, 3206 SPA_VERSION_PASSTHROUGH_X)) 3207 return (ENOTSUP); 3208 } 3209 break; 3210 } 3211 3212 return (zfs_secpolicy_setprop(dsname, prop, pair, CRED())); 3213 } 3214 3215 /* 3216 * Removes properties from the given props list that fail permission checks 3217 * needed to clear them and to restore them in case of a receive error. For each 3218 * property, make sure we have both set and inherit permissions. 3219 * 3220 * Returns the first error encountered if any permission checks fail. If the 3221 * caller provides a non-NULL errlist, it also gives the complete list of names 3222 * of all the properties that failed a permission check along with the 3223 * corresponding error numbers. The caller is responsible for freeing the 3224 * returned errlist. 3225 * 3226 * If every property checks out successfully, zero is returned and the list 3227 * pointed at by errlist is NULL. 3228 */ 3229 static int 3230 zfs_check_clearable(char *dataset, nvlist_t *props, nvlist_t **errlist) 3231 { 3232 zfs_cmd_t *zc; 3233 nvpair_t *pair, *next_pair; 3234 nvlist_t *errors; 3235 int err, rv = 0; 3236 3237 if (props == NULL) 3238 return (0); 3239 3240 VERIFY(nvlist_alloc(&errors, NV_UNIQUE_NAME, KM_SLEEP) == 0); 3241 3242 zc = kmem_alloc(sizeof (zfs_cmd_t), KM_SLEEP); 3243 (void) strcpy(zc->zc_name, dataset); 3244 pair = nvlist_next_nvpair(props, NULL); 3245 while (pair != NULL) { 3246 next_pair = nvlist_next_nvpair(props, pair); 3247 3248 (void) strcpy(zc->zc_value, nvpair_name(pair)); 3249 if ((err = zfs_check_settable(dataset, pair, CRED())) != 0 || 3250 (err = zfs_secpolicy_inherit(zc, CRED())) != 0) { 3251 VERIFY(nvlist_remove_nvpair(props, pair) == 0); 3252 VERIFY(nvlist_add_int32(errors, 3253 zc->zc_value, err) == 0); 3254 } 3255 pair = next_pair; 3256 } 3257 kmem_free(zc, sizeof (zfs_cmd_t)); 3258 3259 if ((pair = nvlist_next_nvpair(errors, NULL)) == NULL) { 3260 nvlist_free(errors); 3261 errors = NULL; 3262 } else { 3263 VERIFY(nvpair_value_int32(pair, &rv) == 0); 3264 } 3265 3266 if (errlist == NULL) 3267 nvlist_free(errors); 3268 else 3269 *errlist = errors; 3270 3271 return (rv); 3272 } 3273 3274 static boolean_t 3275 propval_equals(nvpair_t *p1, nvpair_t *p2) 3276 { 3277 if (nvpair_type(p1) == DATA_TYPE_NVLIST) { 3278 /* dsl_prop_get_all_impl() format */ 3279 nvlist_t *attrs; 3280 VERIFY(nvpair_value_nvlist(p1, &attrs) == 0); 3281 VERIFY(nvlist_lookup_nvpair(attrs, ZPROP_VALUE, 3282 &p1) == 0); 3283 } 3284 3285 if (nvpair_type(p2) == DATA_TYPE_NVLIST) { 3286 nvlist_t *attrs; 3287 VERIFY(nvpair_value_nvlist(p2, &attrs) == 0); 3288 VERIFY(nvlist_lookup_nvpair(attrs, ZPROP_VALUE, 3289 &p2) == 0); 3290 } 3291 3292 if (nvpair_type(p1) != nvpair_type(p2)) 3293 return (B_FALSE); 3294 3295 if (nvpair_type(p1) == DATA_TYPE_STRING) { 3296 char *valstr1, *valstr2; 3297 3298 VERIFY(nvpair_value_string(p1, (char **)&valstr1) == 0); 3299 VERIFY(nvpair_value_string(p2, (char **)&valstr2) == 0); 3300 return (strcmp(valstr1, valstr2) == 0); 3301 } else { 3302 uint64_t intval1, intval2; 3303 3304 VERIFY(nvpair_value_uint64(p1, &intval1) == 0); 3305 VERIFY(nvpair_value_uint64(p2, &intval2) == 0); 3306 return (intval1 == intval2); 3307 } 3308 } 3309 3310 /* 3311 * Remove properties from props if they are not going to change (as determined 3312 * by comparison with origprops). Remove them from origprops as well, since we 3313 * do not need to clear or restore properties that won't change. 3314 */ 3315 static void 3316 props_reduce(nvlist_t *props, nvlist_t *origprops) 3317 { 3318 nvpair_t *pair, *next_pair; 3319 3320 if (origprops == NULL) 3321 return; /* all props need to be received */ 3322 3323 pair = nvlist_next_nvpair(props, NULL); 3324 while (pair != NULL) { 3325 const char *propname = nvpair_name(pair); 3326 nvpair_t *match; 3327 3328 next_pair = nvlist_next_nvpair(props, pair); 3329 3330 if ((nvlist_lookup_nvpair(origprops, propname, 3331 &match) != 0) || !propval_equals(pair, match)) 3332 goto next; /* need to set received value */ 3333 3334 /* don't clear the existing received value */ 3335 (void) nvlist_remove_nvpair(origprops, match); 3336 /* don't bother receiving the property */ 3337 (void) nvlist_remove_nvpair(props, pair); 3338 next: 3339 pair = next_pair; 3340 } 3341 } 3342 3343 #ifdef DEBUG 3344 static boolean_t zfs_ioc_recv_inject_err; 3345 #endif 3346 3347 /* 3348 * inputs: 3349 * zc_name name of containing filesystem 3350 * zc_nvlist_src{_size} nvlist of properties to apply 3351 * zc_value name of snapshot to create 3352 * zc_string name of clone origin (if DRR_FLAG_CLONE) 3353 * zc_cookie file descriptor to recv from 3354 * zc_begin_record the BEGIN record of the stream (not byteswapped) 3355 * zc_guid force flag 3356 * 3357 * outputs: 3358 * zc_cookie number of bytes read 3359 * zc_nvlist_dst{_size} error for each unapplied received property 3360 * zc_obj zprop_errflags_t 3361 */ 3362 static int 3363 zfs_ioc_recv(zfs_cmd_t *zc) 3364 { 3365 file_t *fp; 3366 objset_t *os; 3367 dmu_recv_cookie_t drc; 3368 boolean_t force = (boolean_t)zc->zc_guid; 3369 int fd; 3370 int error = 0; 3371 int props_error = 0; 3372 nvlist_t *errors; 3373 offset_t off; 3374 nvlist_t *props = NULL; /* sent properties */ 3375 nvlist_t *origprops = NULL; /* existing properties */ 3376 objset_t *origin = NULL; 3377 char *tosnap; 3378 char tofs[ZFS_MAXNAMELEN]; 3379 boolean_t first_recvd_props = B_FALSE; 3380 3381 if (dataset_namecheck(zc->zc_value, NULL, NULL) != 0 || 3382 strchr(zc->zc_value, '@') == NULL || 3383 strchr(zc->zc_value, '%')) 3384 return (EINVAL); 3385 3386 (void) strcpy(tofs, zc->zc_value); 3387 tosnap = strchr(tofs, '@'); 3388 *tosnap++ = '\0'; 3389 3390 if (zc->zc_nvlist_src != NULL && 3391 (error = get_nvlist(zc->zc_nvlist_src, zc->zc_nvlist_src_size, 3392 zc->zc_iflags, &props)) != 0) 3393 return (error); 3394 3395 fd = zc->zc_cookie; 3396 fp = getf(fd); 3397 if (fp == NULL) { 3398 nvlist_free(props); 3399 return (EBADF); 3400 } 3401 3402 VERIFY(nvlist_alloc(&errors, NV_UNIQUE_NAME, KM_SLEEP) == 0); 3403 3404 if (props && dmu_objset_hold(tofs, FTAG, &os) == 0) { 3405 if ((spa_version(os->os_spa) >= SPA_VERSION_RECVD_PROPS) && 3406 !dsl_prop_get_hasrecvd(os)) { 3407 first_recvd_props = B_TRUE; 3408 } 3409 3410 /* 3411 * If new received properties are supplied, they are to 3412 * completely replace the existing received properties, so stash 3413 * away the existing ones. 3414 */ 3415 if (dsl_prop_get_received(os, &origprops) == 0) { 3416 nvlist_t *errlist = NULL; 3417 /* 3418 * Don't bother writing a property if its value won't 3419 * change (and avoid the unnecessary security checks). 3420 * 3421 * The first receive after SPA_VERSION_RECVD_PROPS is a 3422 * special case where we blow away all local properties 3423 * regardless. 3424 */ 3425 if (!first_recvd_props) 3426 props_reduce(props, origprops); 3427 if (zfs_check_clearable(tofs, origprops, 3428 &errlist) != 0) 3429 (void) nvlist_merge(errors, errlist, 0); 3430 nvlist_free(errlist); 3431 } 3432 3433 dmu_objset_rele(os, FTAG); 3434 } 3435 3436 if (zc->zc_string[0]) { 3437 error = dmu_objset_hold(zc->zc_string, FTAG, &origin); 3438 if (error) 3439 goto out; 3440 } 3441 3442 error = dmu_recv_begin(tofs, tosnap, zc->zc_top_ds, 3443 &zc->zc_begin_record, force, origin, &drc); 3444 if (origin) 3445 dmu_objset_rele(origin, FTAG); 3446 if (error) 3447 goto out; 3448 3449 /* 3450 * Set properties before we receive the stream so that they are applied 3451 * to the new data. Note that we must call dmu_recv_stream() if 3452 * dmu_recv_begin() succeeds. 3453 */ 3454 if (props) { 3455 nvlist_t *errlist; 3456 3457 if (dmu_objset_from_ds(drc.drc_logical_ds, &os) == 0) { 3458 if (drc.drc_newfs) { 3459 if (spa_version(os->os_spa) >= 3460 SPA_VERSION_RECVD_PROPS) 3461 first_recvd_props = B_TRUE; 3462 } else if (origprops != NULL) { 3463 if (clear_received_props(os, tofs, origprops, 3464 first_recvd_props ? NULL : props) != 0) 3465 zc->zc_obj |= ZPROP_ERR_NOCLEAR; 3466 } else { 3467 zc->zc_obj |= ZPROP_ERR_NOCLEAR; 3468 } 3469 dsl_prop_set_hasrecvd(os); 3470 } else if (!drc.drc_newfs) { 3471 zc->zc_obj |= ZPROP_ERR_NOCLEAR; 3472 } 3473 3474 (void) zfs_set_prop_nvlist(tofs, ZPROP_SRC_RECEIVED, 3475 props, &errlist); 3476 (void) nvlist_merge(errors, errlist, 0); 3477 nvlist_free(errlist); 3478 } 3479 3480 if (fit_error_list(zc, &errors) != 0 || put_nvlist(zc, errors) != 0) { 3481 /* 3482 * Caller made zc->zc_nvlist_dst less than the minimum expected 3483 * size or supplied an invalid address. 3484 */ 3485 props_error = EINVAL; 3486 } 3487 3488 off = fp->f_offset; 3489 error = dmu_recv_stream(&drc, fp->f_vnode, &off); 3490 3491 if (error == 0) { 3492 zfsvfs_t *zfsvfs = NULL; 3493 3494 if (getzfsvfs(tofs, &zfsvfs) == 0) { 3495 /* online recv */ 3496 int end_err; 3497 3498 error = zfs_suspend_fs(zfsvfs); 3499 /* 3500 * If the suspend fails, then the recv_end will 3501 * likely also fail, and clean up after itself. 3502 */ 3503 end_err = dmu_recv_end(&drc); 3504 if (error == 0) { 3505 int resume_err = 3506 zfs_resume_fs(zfsvfs, tofs); 3507 error = error ? error : resume_err; 3508 } 3509 error = error ? error : end_err; 3510 VFS_RELE(zfsvfs->z_vfs); 3511 } else { 3512 error = dmu_recv_end(&drc); 3513 } 3514 } 3515 3516 zc->zc_cookie = off - fp->f_offset; 3517 if (VOP_SEEK(fp->f_vnode, fp->f_offset, &off, NULL) == 0) 3518 fp->f_offset = off; 3519 3520 #ifdef DEBUG 3521 if (zfs_ioc_recv_inject_err) { 3522 zfs_ioc_recv_inject_err = B_FALSE; 3523 error = 1; 3524 } 3525 #endif 3526 /* 3527 * On error, restore the original props. 3528 */ 3529 if (error && props) { 3530 if (dmu_objset_hold(tofs, FTAG, &os) == 0) { 3531 if (clear_received_props(os, tofs, props, NULL) != 0) { 3532 /* 3533 * We failed to clear the received properties. 3534 * Since we may have left a $recvd value on the 3535 * system, we can't clear the $hasrecvd flag. 3536 */ 3537 zc->zc_obj |= ZPROP_ERR_NORESTORE; 3538 } else if (first_recvd_props) { 3539 dsl_prop_unset_hasrecvd(os); 3540 } 3541 dmu_objset_rele(os, FTAG); 3542 } else if (!drc.drc_newfs) { 3543 /* We failed to clear the received properties. */ 3544 zc->zc_obj |= ZPROP_ERR_NORESTORE; 3545 } 3546 3547 if (origprops == NULL && !drc.drc_newfs) { 3548 /* We failed to stash the original properties. */ 3549 zc->zc_obj |= ZPROP_ERR_NORESTORE; 3550 } 3551 3552 /* 3553 * dsl_props_set() will not convert RECEIVED to LOCAL on or 3554 * after SPA_VERSION_RECVD_PROPS, so we need to specify LOCAL 3555 * explictly if we're restoring local properties cleared in the 3556 * first new-style receive. 3557 */ 3558 if (origprops != NULL && 3559 zfs_set_prop_nvlist(tofs, (first_recvd_props ? 3560 ZPROP_SRC_LOCAL : ZPROP_SRC_RECEIVED), 3561 origprops, NULL) != 0) { 3562 /* 3563 * We stashed the original properties but failed to 3564 * restore them. 3565 */ 3566 zc->zc_obj |= ZPROP_ERR_NORESTORE; 3567 } 3568 } 3569 out: 3570 nvlist_free(props); 3571 nvlist_free(origprops); 3572 nvlist_free(errors); 3573 releasef(fd); 3574 3575 if (error == 0) 3576 error = props_error; 3577 3578 return (error); 3579 } 3580 3581 /* 3582 * inputs: 3583 * zc_name name of snapshot to send 3584 * zc_value short name of incremental fromsnap (may be empty) 3585 * zc_cookie file descriptor to send stream to 3586 * zc_obj fromorigin flag (mutually exclusive with zc_value) 3587 * 3588 * outputs: none 3589 */ 3590 static int 3591 zfs_ioc_send(zfs_cmd_t *zc) 3592 { 3593 objset_t *fromsnap = NULL; 3594 objset_t *tosnap; 3595 file_t *fp; 3596 int error; 3597 offset_t off; 3598 3599 error = dmu_objset_hold(zc->zc_name, FTAG, &tosnap); 3600 if (error) 3601 return (error); 3602 3603 if (zc->zc_value[0] != '\0') { 3604 char *buf; 3605 char *cp; 3606 3607 buf = kmem_alloc(MAXPATHLEN, KM_SLEEP); 3608 (void) strncpy(buf, zc->zc_name, MAXPATHLEN); 3609 cp = strchr(buf, '@'); 3610 if (cp) 3611 *(cp+1) = 0; 3612 (void) strncat(buf, zc->zc_value, MAXPATHLEN); 3613 error = dmu_objset_hold(buf, FTAG, &fromsnap); 3614 kmem_free(buf, MAXPATHLEN); 3615 if (error) { 3616 dmu_objset_rele(tosnap, FTAG); 3617 return (error); 3618 } 3619 } 3620 3621 fp = getf(zc->zc_cookie); 3622 if (fp == NULL) { 3623 dmu_objset_rele(tosnap, FTAG); 3624 if (fromsnap) 3625 dmu_objset_rele(fromsnap, FTAG); 3626 return (EBADF); 3627 } 3628 3629 off = fp->f_offset; 3630 error = dmu_sendbackup(tosnap, fromsnap, zc->zc_obj, fp->f_vnode, &off); 3631 3632 if (VOP_SEEK(fp->f_vnode, fp->f_offset, &off, NULL) == 0) 3633 fp->f_offset = off; 3634 releasef(zc->zc_cookie); 3635 if (fromsnap) 3636 dmu_objset_rele(fromsnap, FTAG); 3637 dmu_objset_rele(tosnap, FTAG); 3638 return (error); 3639 } 3640 3641 static int 3642 zfs_ioc_inject_fault(zfs_cmd_t *zc) 3643 { 3644 int id, error; 3645 3646 error = zio_inject_fault(zc->zc_name, (int)zc->zc_guid, &id, 3647 &zc->zc_inject_record); 3648 3649 if (error == 0) 3650 zc->zc_guid = (uint64_t)id; 3651 3652 return (error); 3653 } 3654 3655 static int 3656 zfs_ioc_clear_fault(zfs_cmd_t *zc) 3657 { 3658 return (zio_clear_fault((int)zc->zc_guid)); 3659 } 3660 3661 static int 3662 zfs_ioc_inject_list_next(zfs_cmd_t *zc) 3663 { 3664 int id = (int)zc->zc_guid; 3665 int error; 3666 3667 error = zio_inject_list_next(&id, zc->zc_name, sizeof (zc->zc_name), 3668 &zc->zc_inject_record); 3669 3670 zc->zc_guid = id; 3671 3672 return (error); 3673 } 3674 3675 static int 3676 zfs_ioc_error_log(zfs_cmd_t *zc) 3677 { 3678 spa_t *spa; 3679 int error; 3680 size_t count = (size_t)zc->zc_nvlist_dst_size; 3681 3682 if ((error = spa_open(zc->zc_name, &spa, FTAG)) != 0) 3683 return (error); 3684 3685 error = spa_get_errlog(spa, (void *)(uintptr_t)zc->zc_nvlist_dst, 3686 &count); 3687 if (error == 0) 3688 zc->zc_nvlist_dst_size = count; 3689 else 3690 zc->zc_nvlist_dst_size = spa_get_errlog_size(spa); 3691 3692 spa_close(spa, FTAG); 3693 3694 return (error); 3695 } 3696 3697 static int 3698 zfs_ioc_clear(zfs_cmd_t *zc) 3699 { 3700 spa_t *spa; 3701 vdev_t *vd; 3702 int error; 3703 3704 /* 3705 * On zpool clear we also fix up missing slogs 3706 */ 3707 mutex_enter(&spa_namespace_lock); 3708 spa = spa_lookup(zc->zc_name); 3709 if (spa == NULL) { 3710 mutex_exit(&spa_namespace_lock); 3711 return (EIO); 3712 } 3713 if (spa_get_log_state(spa) == SPA_LOG_MISSING) { 3714 /* we need to let spa_open/spa_load clear the chains */ 3715 spa_set_log_state(spa, SPA_LOG_CLEAR); 3716 } 3717 spa->spa_last_open_failed = 0; 3718 mutex_exit(&spa_namespace_lock); 3719 3720 if (zc->zc_cookie == ZPOOL_NO_REWIND) { 3721 error = spa_open(zc->zc_name, &spa, FTAG); 3722 } else { 3723 nvlist_t *policy; 3724 nvlist_t *config = NULL; 3725 3726 if (zc->zc_nvlist_src == NULL) 3727 return (EINVAL); 3728 3729 if ((error = get_nvlist(zc->zc_nvlist_src, 3730 zc->zc_nvlist_src_size, zc->zc_iflags, &policy)) == 0) { 3731 error = spa_open_rewind(zc->zc_name, &spa, FTAG, 3732 policy, &config); 3733 if (config != NULL) { 3734 (void) put_nvlist(zc, config); 3735 nvlist_free(config); 3736 } 3737 nvlist_free(policy); 3738 } 3739 } 3740 3741 if (error) 3742 return (error); 3743 3744 spa_vdev_state_enter(spa, SCL_NONE); 3745 3746 if (zc->zc_guid == 0) { 3747 vd = NULL; 3748 } else { 3749 vd = spa_lookup_by_guid(spa, zc->zc_guid, B_TRUE); 3750 if (vd == NULL) { 3751 (void) spa_vdev_state_exit(spa, NULL, ENODEV); 3752 spa_close(spa, FTAG); 3753 return (ENODEV); 3754 } 3755 } 3756 3757 vdev_clear(spa, vd); 3758 3759 (void) spa_vdev_state_exit(spa, NULL, 0); 3760 3761 /* 3762 * Resume any suspended I/Os. 3763 */ 3764 if (zio_resume(spa) != 0) 3765 error = EIO; 3766 3767 spa_close(spa, FTAG); 3768 3769 return (error); 3770 } 3771 3772 /* 3773 * inputs: 3774 * zc_name name of filesystem 3775 * zc_value name of origin snapshot 3776 * 3777 * outputs: 3778 * zc_string name of conflicting snapshot, if there is one 3779 */ 3780 static int 3781 zfs_ioc_promote(zfs_cmd_t *zc) 3782 { 3783 char *cp; 3784 3785 /* 3786 * We don't need to unmount *all* the origin fs's snapshots, but 3787 * it's easier. 3788 */ 3789 cp = strchr(zc->zc_value, '@'); 3790 if (cp) 3791 *cp = '\0'; 3792 (void) dmu_objset_find(zc->zc_value, 3793 zfs_unmount_snap, NULL, DS_FIND_SNAPSHOTS); 3794 return (dsl_dataset_promote(zc->zc_name, zc->zc_string)); 3795 } 3796 3797 /* 3798 * Retrieve a single {user|group}{used|quota}@... property. 3799 * 3800 * inputs: 3801 * zc_name name of filesystem 3802 * zc_objset_type zfs_userquota_prop_t 3803 * zc_value domain name (eg. "S-1-234-567-89") 3804 * zc_guid RID/UID/GID 3805 * 3806 * outputs: 3807 * zc_cookie property value 3808 */ 3809 static int 3810 zfs_ioc_userspace_one(zfs_cmd_t *zc) 3811 { 3812 zfsvfs_t *zfsvfs; 3813 int error; 3814 3815 if (zc->zc_objset_type >= ZFS_NUM_USERQUOTA_PROPS) 3816 return (EINVAL); 3817 3818 error = zfsvfs_hold(zc->zc_name, FTAG, &zfsvfs); 3819 if (error) 3820 return (error); 3821 3822 error = zfs_userspace_one(zfsvfs, 3823 zc->zc_objset_type, zc->zc_value, zc->zc_guid, &zc->zc_cookie); 3824 zfsvfs_rele(zfsvfs, FTAG); 3825 3826 return (error); 3827 } 3828 3829 /* 3830 * inputs: 3831 * zc_name name of filesystem 3832 * zc_cookie zap cursor 3833 * zc_objset_type zfs_userquota_prop_t 3834 * zc_nvlist_dst[_size] buffer to fill (not really an nvlist) 3835 * 3836 * outputs: 3837 * zc_nvlist_dst[_size] data buffer (array of zfs_useracct_t) 3838 * zc_cookie zap cursor 3839 */ 3840 static int 3841 zfs_ioc_userspace_many(zfs_cmd_t *zc) 3842 { 3843 zfsvfs_t *zfsvfs; 3844 int error; 3845 3846 error = zfsvfs_hold(zc->zc_name, FTAG, &zfsvfs); 3847 if (error) 3848 return (error); 3849 3850 int bufsize = zc->zc_nvlist_dst_size; 3851 void *buf = kmem_alloc(bufsize, KM_SLEEP); 3852 3853 error = zfs_userspace_many(zfsvfs, zc->zc_objset_type, &zc->zc_cookie, 3854 buf, &zc->zc_nvlist_dst_size); 3855 3856 if (error == 0) { 3857 error = xcopyout(buf, 3858 (void *)(uintptr_t)zc->zc_nvlist_dst, 3859 zc->zc_nvlist_dst_size); 3860 } 3861 kmem_free(buf, bufsize); 3862 zfsvfs_rele(zfsvfs, FTAG); 3863 3864 return (error); 3865 } 3866 3867 /* 3868 * inputs: 3869 * zc_name name of filesystem 3870 * 3871 * outputs: 3872 * none 3873 */ 3874 static int 3875 zfs_ioc_userspace_upgrade(zfs_cmd_t *zc) 3876 { 3877 objset_t *os; 3878 int error = 0; 3879 zfsvfs_t *zfsvfs; 3880 3881 if (getzfsvfs(zc->zc_name, &zfsvfs) == 0) { 3882 if (!dmu_objset_userused_enabled(zfsvfs->z_os)) { 3883 /* 3884 * If userused is not enabled, it may be because the 3885 * objset needs to be closed & reopened (to grow the 3886 * objset_phys_t). Suspend/resume the fs will do that. 3887 */ 3888 error = zfs_suspend_fs(zfsvfs); 3889 if (error == 0) 3890 error = zfs_resume_fs(zfsvfs, zc->zc_name); 3891 } 3892 if (error == 0) 3893 error = dmu_objset_userspace_upgrade(zfsvfs->z_os); 3894 VFS_RELE(zfsvfs->z_vfs); 3895 } else { 3896 /* XXX kind of reading contents without owning */ 3897 error = dmu_objset_hold(zc->zc_name, FTAG, &os); 3898 if (error) 3899 return (error); 3900 3901 error = dmu_objset_userspace_upgrade(os); 3902 dmu_objset_rele(os, FTAG); 3903 } 3904 3905 return (error); 3906 } 3907 3908 /* 3909 * We don't want to have a hard dependency 3910 * against some special symbols in sharefs 3911 * nfs, and smbsrv. Determine them if needed when 3912 * the first file system is shared. 3913 * Neither sharefs, nfs or smbsrv are unloadable modules. 3914 */ 3915 int (*znfsexport_fs)(void *arg); 3916 int (*zshare_fs)(enum sharefs_sys_op, share_t *, uint32_t); 3917 int (*zsmbexport_fs)(void *arg, boolean_t add_share); 3918 3919 int zfs_nfsshare_inited; 3920 int zfs_smbshare_inited; 3921 3922 ddi_modhandle_t nfs_mod; 3923 ddi_modhandle_t sharefs_mod; 3924 ddi_modhandle_t smbsrv_mod; 3925 kmutex_t zfs_share_lock; 3926 3927 static int 3928 zfs_init_sharefs() 3929 { 3930 int error; 3931 3932 ASSERT(MUTEX_HELD(&zfs_share_lock)); 3933 /* Both NFS and SMB shares also require sharetab support. */ 3934 if (sharefs_mod == NULL && ((sharefs_mod = 3935 ddi_modopen("fs/sharefs", 3936 KRTLD_MODE_FIRST, &error)) == NULL)) { 3937 return (ENOSYS); 3938 } 3939 if (zshare_fs == NULL && ((zshare_fs = 3940 (int (*)(enum sharefs_sys_op, share_t *, uint32_t)) 3941 ddi_modsym(sharefs_mod, "sharefs_impl", &error)) == NULL)) { 3942 return (ENOSYS); 3943 } 3944 return (0); 3945 } 3946 3947 static int 3948 zfs_ioc_share(zfs_cmd_t *zc) 3949 { 3950 int error; 3951 int opcode; 3952 3953 switch (zc->zc_share.z_sharetype) { 3954 case ZFS_SHARE_NFS: 3955 case ZFS_UNSHARE_NFS: 3956 if (zfs_nfsshare_inited == 0) { 3957 mutex_enter(&zfs_share_lock); 3958 if (nfs_mod == NULL && ((nfs_mod = ddi_modopen("fs/nfs", 3959 KRTLD_MODE_FIRST, &error)) == NULL)) { 3960 mutex_exit(&zfs_share_lock); 3961 return (ENOSYS); 3962 } 3963 if (znfsexport_fs == NULL && 3964 ((znfsexport_fs = (int (*)(void *)) 3965 ddi_modsym(nfs_mod, 3966 "nfs_export", &error)) == NULL)) { 3967 mutex_exit(&zfs_share_lock); 3968 return (ENOSYS); 3969 } 3970 error = zfs_init_sharefs(); 3971 if (error) { 3972 mutex_exit(&zfs_share_lock); 3973 return (ENOSYS); 3974 } 3975 zfs_nfsshare_inited = 1; 3976 mutex_exit(&zfs_share_lock); 3977 } 3978 break; 3979 case ZFS_SHARE_SMB: 3980 case ZFS_UNSHARE_SMB: 3981 if (zfs_smbshare_inited == 0) { 3982 mutex_enter(&zfs_share_lock); 3983 if (smbsrv_mod == NULL && ((smbsrv_mod = 3984 ddi_modopen("drv/smbsrv", 3985 KRTLD_MODE_FIRST, &error)) == NULL)) { 3986 mutex_exit(&zfs_share_lock); 3987 return (ENOSYS); 3988 } 3989 if (zsmbexport_fs == NULL && ((zsmbexport_fs = 3990 (int (*)(void *, boolean_t))ddi_modsym(smbsrv_mod, 3991 "smb_server_share", &error)) == NULL)) { 3992 mutex_exit(&zfs_share_lock); 3993 return (ENOSYS); 3994 } 3995 error = zfs_init_sharefs(); 3996 if (error) { 3997 mutex_exit(&zfs_share_lock); 3998 return (ENOSYS); 3999 } 4000 zfs_smbshare_inited = 1; 4001 mutex_exit(&zfs_share_lock); 4002 } 4003 break; 4004 default: 4005 return (EINVAL); 4006 } 4007 4008 switch (zc->zc_share.z_sharetype) { 4009 case ZFS_SHARE_NFS: 4010 case ZFS_UNSHARE_NFS: 4011 if (error = 4012 znfsexport_fs((void *) 4013 (uintptr_t)zc->zc_share.z_exportdata)) 4014 return (error); 4015 break; 4016 case ZFS_SHARE_SMB: 4017 case ZFS_UNSHARE_SMB: 4018 if (error = zsmbexport_fs((void *) 4019 (uintptr_t)zc->zc_share.z_exportdata, 4020 zc->zc_share.z_sharetype == ZFS_SHARE_SMB ? 4021 B_TRUE: B_FALSE)) { 4022 return (error); 4023 } 4024 break; 4025 } 4026 4027 opcode = (zc->zc_share.z_sharetype == ZFS_SHARE_NFS || 4028 zc->zc_share.z_sharetype == ZFS_SHARE_SMB) ? 4029 SHAREFS_ADD : SHAREFS_REMOVE; 4030 4031 /* 4032 * Add or remove share from sharetab 4033 */ 4034 error = zshare_fs(opcode, 4035 (void *)(uintptr_t)zc->zc_share.z_sharedata, 4036 zc->zc_share.z_sharemax); 4037 4038 return (error); 4039 4040 } 4041 4042 ace_t full_access[] = { 4043 {(uid_t)-1, ACE_ALL_PERMS, ACE_EVERYONE, 0} 4044 }; 4045 4046 /* 4047 * Remove all ACL files in shares dir 4048 */ 4049 static int 4050 zfs_smb_acl_purge(znode_t *dzp) 4051 { 4052 zap_cursor_t zc; 4053 zap_attribute_t zap; 4054 zfsvfs_t *zfsvfs = dzp->z_zfsvfs; 4055 int error; 4056 4057 for (zap_cursor_init(&zc, zfsvfs->z_os, dzp->z_id); 4058 (error = zap_cursor_retrieve(&zc, &zap)) == 0; 4059 zap_cursor_advance(&zc)) { 4060 if ((error = VOP_REMOVE(ZTOV(dzp), zap.za_name, kcred, 4061 NULL, 0)) != 0) 4062 break; 4063 } 4064 zap_cursor_fini(&zc); 4065 return (error); 4066 } 4067 4068 static int 4069 zfs_ioc_smb_acl(zfs_cmd_t *zc) 4070 { 4071 vnode_t *vp; 4072 znode_t *dzp; 4073 vnode_t *resourcevp = NULL; 4074 znode_t *sharedir; 4075 zfsvfs_t *zfsvfs; 4076 nvlist_t *nvlist; 4077 char *src, *target; 4078 vattr_t vattr; 4079 vsecattr_t vsec; 4080 int error = 0; 4081 4082 if ((error = lookupname(zc->zc_value, UIO_SYSSPACE, 4083 NO_FOLLOW, NULL, &vp)) != 0) 4084 return (error); 4085 4086 /* Now make sure mntpnt and dataset are ZFS */ 4087 4088 if (vp->v_vfsp->vfs_fstype != zfsfstype || 4089 (strcmp((char *)refstr_value(vp->v_vfsp->vfs_resource), 4090 zc->zc_name) != 0)) { 4091 VN_RELE(vp); 4092 return (EINVAL); 4093 } 4094 4095 dzp = VTOZ(vp); 4096 zfsvfs = dzp->z_zfsvfs; 4097 ZFS_ENTER(zfsvfs); 4098 4099 /* 4100 * Create share dir if its missing. 4101 */ 4102 mutex_enter(&zfsvfs->z_lock); 4103 if (zfsvfs->z_shares_dir == 0) { 4104 dmu_tx_t *tx; 4105 4106 tx = dmu_tx_create(zfsvfs->z_os); 4107 dmu_tx_hold_zap(tx, MASTER_NODE_OBJ, TRUE, 4108 ZFS_SHARES_DIR); 4109 dmu_tx_hold_zap(tx, DMU_NEW_OBJECT, FALSE, NULL); 4110 error = dmu_tx_assign(tx, TXG_WAIT); 4111 if (error) { 4112 dmu_tx_abort(tx); 4113 } else { 4114 error = zfs_create_share_dir(zfsvfs, tx); 4115 dmu_tx_commit(tx); 4116 } 4117 if (error) { 4118 mutex_exit(&zfsvfs->z_lock); 4119 VN_RELE(vp); 4120 ZFS_EXIT(zfsvfs); 4121 return (error); 4122 } 4123 } 4124 mutex_exit(&zfsvfs->z_lock); 4125 4126 ASSERT(zfsvfs->z_shares_dir); 4127 if ((error = zfs_zget(zfsvfs, zfsvfs->z_shares_dir, &sharedir)) != 0) { 4128 VN_RELE(vp); 4129 ZFS_EXIT(zfsvfs); 4130 return (error); 4131 } 4132 4133 switch (zc->zc_cookie) { 4134 case ZFS_SMB_ACL_ADD: 4135 vattr.va_mask = AT_MODE|AT_UID|AT_GID|AT_TYPE; 4136 vattr.va_type = VREG; 4137 vattr.va_mode = S_IFREG|0777; 4138 vattr.va_uid = 0; 4139 vattr.va_gid = 0; 4140 4141 vsec.vsa_mask = VSA_ACE; 4142 vsec.vsa_aclentp = &full_access; 4143 vsec.vsa_aclentsz = sizeof (full_access); 4144 vsec.vsa_aclcnt = 1; 4145 4146 error = VOP_CREATE(ZTOV(sharedir), zc->zc_string, 4147 &vattr, EXCL, 0, &resourcevp, kcred, 0, NULL, &vsec); 4148 if (resourcevp) 4149 VN_RELE(resourcevp); 4150 break; 4151 4152 case ZFS_SMB_ACL_REMOVE: 4153 error = VOP_REMOVE(ZTOV(sharedir), zc->zc_string, kcred, 4154 NULL, 0); 4155 break; 4156 4157 case ZFS_SMB_ACL_RENAME: 4158 if ((error = get_nvlist(zc->zc_nvlist_src, 4159 zc->zc_nvlist_src_size, zc->zc_iflags, &nvlist)) != 0) { 4160 VN_RELE(vp); 4161 ZFS_EXIT(zfsvfs); 4162 return (error); 4163 } 4164 if (nvlist_lookup_string(nvlist, ZFS_SMB_ACL_SRC, &src) || 4165 nvlist_lookup_string(nvlist, ZFS_SMB_ACL_TARGET, 4166 &target)) { 4167 VN_RELE(vp); 4168 VN_RELE(ZTOV(sharedir)); 4169 ZFS_EXIT(zfsvfs); 4170 nvlist_free(nvlist); 4171 return (error); 4172 } 4173 error = VOP_RENAME(ZTOV(sharedir), src, ZTOV(sharedir), target, 4174 kcred, NULL, 0); 4175 nvlist_free(nvlist); 4176 break; 4177 4178 case ZFS_SMB_ACL_PURGE: 4179 error = zfs_smb_acl_purge(sharedir); 4180 break; 4181 4182 default: 4183 error = EINVAL; 4184 break; 4185 } 4186 4187 VN_RELE(vp); 4188 VN_RELE(ZTOV(sharedir)); 4189 4190 ZFS_EXIT(zfsvfs); 4191 4192 return (error); 4193 } 4194 4195 /* 4196 * inputs: 4197 * zc_name name of filesystem 4198 * zc_value short name of snap 4199 * zc_string user-supplied tag for this reference 4200 * zc_cookie recursive flag 4201 * zc_temphold set if hold is temporary 4202 * 4203 * outputs: none 4204 */ 4205 static int 4206 zfs_ioc_hold(zfs_cmd_t *zc) 4207 { 4208 boolean_t recursive = zc->zc_cookie; 4209 4210 if (snapshot_namecheck(zc->zc_value, NULL, NULL) != 0) 4211 return (EINVAL); 4212 4213 return (dsl_dataset_user_hold(zc->zc_name, zc->zc_value, 4214 zc->zc_string, recursive, zc->zc_temphold)); 4215 } 4216 4217 /* 4218 * inputs: 4219 * zc_name name of dataset from which we're releasing a user reference 4220 * zc_value short name of snap 4221 * zc_string user-supplied tag for this reference 4222 * zc_cookie recursive flag 4223 * 4224 * outputs: none 4225 */ 4226 static int 4227 zfs_ioc_release(zfs_cmd_t *zc) 4228 { 4229 boolean_t recursive = zc->zc_cookie; 4230 4231 if (snapshot_namecheck(zc->zc_value, NULL, NULL) != 0) 4232 return (EINVAL); 4233 4234 return (dsl_dataset_user_release(zc->zc_name, zc->zc_value, 4235 zc->zc_string, recursive)); 4236 } 4237 4238 /* 4239 * inputs: 4240 * zc_name name of filesystem 4241 * 4242 * outputs: 4243 * zc_nvlist_src{_size} nvlist of snapshot holds 4244 */ 4245 static int 4246 zfs_ioc_get_holds(zfs_cmd_t *zc) 4247 { 4248 nvlist_t *nvp; 4249 int error; 4250 4251 if ((error = dsl_dataset_get_holds(zc->zc_name, &nvp)) == 0) { 4252 error = put_nvlist(zc, nvp); 4253 nvlist_free(nvp); 4254 } 4255 4256 return (error); 4257 } 4258 4259 /* 4260 * pool create, destroy, and export don't log the history as part of 4261 * zfsdev_ioctl, but rather zfs_ioc_pool_create, and zfs_ioc_pool_export 4262 * do the logging of those commands. 4263 */ 4264 static zfs_ioc_vec_t zfs_ioc_vec[] = { 4265 { zfs_ioc_pool_create, zfs_secpolicy_config, POOL_NAME, B_FALSE, 4266 B_FALSE }, 4267 { zfs_ioc_pool_destroy, zfs_secpolicy_config, POOL_NAME, B_FALSE, 4268 B_FALSE }, 4269 { zfs_ioc_pool_import, zfs_secpolicy_config, POOL_NAME, B_TRUE, 4270 B_FALSE }, 4271 { zfs_ioc_pool_export, zfs_secpolicy_config, POOL_NAME, B_FALSE, 4272 B_FALSE }, 4273 { zfs_ioc_pool_configs, zfs_secpolicy_none, NO_NAME, B_FALSE, 4274 B_FALSE }, 4275 { zfs_ioc_pool_stats, zfs_secpolicy_read, POOL_NAME, B_FALSE, 4276 B_FALSE }, 4277 { zfs_ioc_pool_tryimport, zfs_secpolicy_config, NO_NAME, B_FALSE, 4278 B_FALSE }, 4279 { zfs_ioc_pool_scrub, zfs_secpolicy_config, POOL_NAME, B_TRUE, 4280 B_TRUE }, 4281 { zfs_ioc_pool_freeze, zfs_secpolicy_config, NO_NAME, B_FALSE, 4282 B_FALSE }, 4283 { zfs_ioc_pool_upgrade, zfs_secpolicy_config, POOL_NAME, B_TRUE, 4284 B_TRUE }, 4285 { zfs_ioc_pool_get_history, zfs_secpolicy_config, POOL_NAME, B_FALSE, 4286 B_FALSE }, 4287 { zfs_ioc_vdev_add, zfs_secpolicy_config, POOL_NAME, B_TRUE, 4288 B_TRUE }, 4289 { zfs_ioc_vdev_remove, zfs_secpolicy_config, POOL_NAME, B_TRUE, 4290 B_TRUE }, 4291 { zfs_ioc_vdev_set_state, zfs_secpolicy_config, POOL_NAME, B_TRUE, 4292 B_FALSE }, 4293 { zfs_ioc_vdev_attach, zfs_secpolicy_config, POOL_NAME, B_TRUE, 4294 B_TRUE }, 4295 { zfs_ioc_vdev_detach, zfs_secpolicy_config, POOL_NAME, B_TRUE, 4296 B_TRUE }, 4297 { zfs_ioc_vdev_setpath, zfs_secpolicy_config, POOL_NAME, B_FALSE, 4298 B_TRUE }, 4299 { zfs_ioc_vdev_setfru, zfs_secpolicy_config, POOL_NAME, B_FALSE, 4300 B_TRUE }, 4301 { zfs_ioc_objset_stats, zfs_secpolicy_read, DATASET_NAME, B_FALSE, 4302 B_FALSE }, 4303 { zfs_ioc_objset_zplprops, zfs_secpolicy_read, DATASET_NAME, B_FALSE, 4304 B_FALSE }, 4305 { zfs_ioc_dataset_list_next, zfs_secpolicy_read, DATASET_NAME, B_FALSE, 4306 B_FALSE }, 4307 { zfs_ioc_snapshot_list_next, zfs_secpolicy_read, DATASET_NAME, B_FALSE, 4308 B_FALSE }, 4309 { zfs_ioc_set_prop, zfs_secpolicy_none, DATASET_NAME, B_TRUE, B_TRUE }, 4310 { zfs_ioc_create, zfs_secpolicy_create, DATASET_NAME, B_TRUE, B_TRUE }, 4311 { zfs_ioc_destroy, zfs_secpolicy_destroy, DATASET_NAME, B_TRUE, 4312 B_TRUE}, 4313 { zfs_ioc_rollback, zfs_secpolicy_rollback, DATASET_NAME, B_TRUE, 4314 B_TRUE }, 4315 { zfs_ioc_rename, zfs_secpolicy_rename, DATASET_NAME, B_TRUE, B_TRUE }, 4316 { zfs_ioc_recv, zfs_secpolicy_receive, DATASET_NAME, B_TRUE, B_TRUE }, 4317 { zfs_ioc_send, zfs_secpolicy_send, DATASET_NAME, B_TRUE, B_FALSE }, 4318 { zfs_ioc_inject_fault, zfs_secpolicy_inject, NO_NAME, B_FALSE, 4319 B_FALSE }, 4320 { zfs_ioc_clear_fault, zfs_secpolicy_inject, NO_NAME, B_FALSE, 4321 B_FALSE }, 4322 { zfs_ioc_inject_list_next, zfs_secpolicy_inject, NO_NAME, B_FALSE, 4323 B_FALSE }, 4324 { zfs_ioc_error_log, zfs_secpolicy_inject, POOL_NAME, B_FALSE, 4325 B_FALSE }, 4326 { zfs_ioc_clear, zfs_secpolicy_config, POOL_NAME, B_TRUE, B_FALSE }, 4327 { zfs_ioc_promote, zfs_secpolicy_promote, DATASET_NAME, B_TRUE, 4328 B_TRUE }, 4329 { zfs_ioc_destroy_snaps, zfs_secpolicy_destroy_snaps, DATASET_NAME, 4330 B_TRUE, B_TRUE }, 4331 { zfs_ioc_snapshot, zfs_secpolicy_snapshot, DATASET_NAME, B_TRUE, 4332 B_TRUE }, 4333 { zfs_ioc_dsobj_to_dsname, zfs_secpolicy_config, POOL_NAME, B_FALSE, 4334 B_FALSE }, 4335 { zfs_ioc_obj_to_path, zfs_secpolicy_config, DATASET_NAME, B_FALSE, 4336 B_TRUE }, 4337 { zfs_ioc_pool_set_props, zfs_secpolicy_config, POOL_NAME, B_TRUE, 4338 B_TRUE }, 4339 { zfs_ioc_pool_get_props, zfs_secpolicy_read, POOL_NAME, B_FALSE, 4340 B_FALSE }, 4341 { zfs_ioc_set_fsacl, zfs_secpolicy_fsacl, DATASET_NAME, B_TRUE, 4342 B_TRUE }, 4343 { zfs_ioc_get_fsacl, zfs_secpolicy_read, DATASET_NAME, B_FALSE, 4344 B_FALSE }, 4345 { zfs_ioc_iscsi_perm_check, zfs_secpolicy_iscsi, DATASET_NAME, B_FALSE, 4346 B_FALSE }, 4347 { zfs_ioc_share, zfs_secpolicy_share, DATASET_NAME, B_FALSE, B_FALSE }, 4348 { zfs_ioc_inherit_prop, zfs_secpolicy_inherit, DATASET_NAME, B_TRUE, 4349 B_TRUE }, 4350 { zfs_ioc_smb_acl, zfs_secpolicy_smb_acl, DATASET_NAME, B_FALSE, 4351 B_FALSE }, 4352 { zfs_ioc_userspace_one, zfs_secpolicy_userspace_one, 4353 DATASET_NAME, B_FALSE, B_FALSE }, 4354 { zfs_ioc_userspace_many, zfs_secpolicy_userspace_many, 4355 DATASET_NAME, B_FALSE, B_FALSE }, 4356 { zfs_ioc_userspace_upgrade, zfs_secpolicy_userspace_upgrade, 4357 DATASET_NAME, B_FALSE, B_TRUE }, 4358 { zfs_ioc_hold, zfs_secpolicy_hold, DATASET_NAME, B_TRUE, B_TRUE }, 4359 { zfs_ioc_release, zfs_secpolicy_release, DATASET_NAME, B_TRUE, 4360 B_TRUE }, 4361 { zfs_ioc_get_holds, zfs_secpolicy_read, DATASET_NAME, B_FALSE, 4362 B_TRUE }, 4363 { zfs_ioc_objset_recvd_props, zfs_secpolicy_read, DATASET_NAME, B_FALSE, 4364 B_FALSE }, 4365 { zfs_ioc_vdev_split, zfs_secpolicy_config, POOL_NAME, B_TRUE, 4366 B_TRUE } 4367 }; 4368 4369 int 4370 pool_status_check(const char *name, zfs_ioc_namecheck_t type) 4371 { 4372 spa_t *spa; 4373 int error; 4374 4375 ASSERT(type == POOL_NAME || type == DATASET_NAME); 4376 4377 error = spa_open(name, &spa, FTAG); 4378 if (error == 0) { 4379 if (spa_suspended(spa)) 4380 error = EAGAIN; 4381 spa_close(spa, FTAG); 4382 } 4383 return (error); 4384 } 4385 4386 static int 4387 zfsdev_ioctl(dev_t dev, int cmd, intptr_t arg, int flag, cred_t *cr, int *rvalp) 4388 { 4389 zfs_cmd_t *zc; 4390 uint_t vec; 4391 int error, rc; 4392 4393 if (getminor(dev) != 0) 4394 return (zvol_ioctl(dev, cmd, arg, flag, cr, rvalp)); 4395 4396 vec = cmd - ZFS_IOC; 4397 ASSERT3U(getmajor(dev), ==, ddi_driver_major(zfs_dip)); 4398 4399 if (vec >= sizeof (zfs_ioc_vec) / sizeof (zfs_ioc_vec[0])) 4400 return (EINVAL); 4401 4402 zc = kmem_zalloc(sizeof (zfs_cmd_t), KM_SLEEP); 4403 4404 error = ddi_copyin((void *)arg, zc, sizeof (zfs_cmd_t), flag); 4405 4406 if ((error == 0) && !(flag & FKIOCTL)) 4407 error = zfs_ioc_vec[vec].zvec_secpolicy(zc, cr); 4408 4409 /* 4410 * Ensure that all pool/dataset names are valid before we pass down to 4411 * the lower layers. 4412 */ 4413 if (error == 0) { 4414 zc->zc_name[sizeof (zc->zc_name) - 1] = '\0'; 4415 zc->zc_iflags = flag & FKIOCTL; 4416 switch (zfs_ioc_vec[vec].zvec_namecheck) { 4417 case POOL_NAME: 4418 if (pool_namecheck(zc->zc_name, NULL, NULL) != 0) 4419 error = EINVAL; 4420 if (zfs_ioc_vec[vec].zvec_pool_check) 4421 error = pool_status_check(zc->zc_name, 4422 zfs_ioc_vec[vec].zvec_namecheck); 4423 break; 4424 4425 case DATASET_NAME: 4426 if (dataset_namecheck(zc->zc_name, NULL, NULL) != 0) 4427 error = EINVAL; 4428 if (zfs_ioc_vec[vec].zvec_pool_check) 4429 error = pool_status_check(zc->zc_name, 4430 zfs_ioc_vec[vec].zvec_namecheck); 4431 break; 4432 4433 case NO_NAME: 4434 break; 4435 } 4436 } 4437 4438 if (error == 0) 4439 error = zfs_ioc_vec[vec].zvec_func(zc); 4440 4441 rc = ddi_copyout(zc, (void *)arg, sizeof (zfs_cmd_t), flag); 4442 if (error == 0) { 4443 error = rc; 4444 if (zfs_ioc_vec[vec].zvec_his_log) 4445 zfs_log_history(zc); 4446 } 4447 4448 kmem_free(zc, sizeof (zfs_cmd_t)); 4449 return (error); 4450 } 4451 4452 static int 4453 zfs_attach(dev_info_t *dip, ddi_attach_cmd_t cmd) 4454 { 4455 if (cmd != DDI_ATTACH) 4456 return (DDI_FAILURE); 4457 4458 if (ddi_create_minor_node(dip, "zfs", S_IFCHR, 0, 4459 DDI_PSEUDO, 0) == DDI_FAILURE) 4460 return (DDI_FAILURE); 4461 4462 zfs_dip = dip; 4463 4464 ddi_report_dev(dip); 4465 4466 return (DDI_SUCCESS); 4467 } 4468 4469 static int 4470 zfs_detach(dev_info_t *dip, ddi_detach_cmd_t cmd) 4471 { 4472 if (spa_busy() || zfs_busy() || zvol_busy()) 4473 return (DDI_FAILURE); 4474 4475 if (cmd != DDI_DETACH) 4476 return (DDI_FAILURE); 4477 4478 zfs_dip = NULL; 4479 4480 ddi_prop_remove_all(dip); 4481 ddi_remove_minor_node(dip, NULL); 4482 4483 return (DDI_SUCCESS); 4484 } 4485 4486 /*ARGSUSED*/ 4487 static int 4488 zfs_info(dev_info_t *dip, ddi_info_cmd_t infocmd, void *arg, void **result) 4489 { 4490 switch (infocmd) { 4491 case DDI_INFO_DEVT2DEVINFO: 4492 *result = zfs_dip; 4493 return (DDI_SUCCESS); 4494 4495 case DDI_INFO_DEVT2INSTANCE: 4496 *result = (void *)0; 4497 return (DDI_SUCCESS); 4498 } 4499 4500 return (DDI_FAILURE); 4501 } 4502 4503 /* 4504 * OK, so this is a little weird. 4505 * 4506 * /dev/zfs is the control node, i.e. minor 0. 4507 * /dev/zvol/[r]dsk/pool/dataset are the zvols, minor > 0. 4508 * 4509 * /dev/zfs has basically nothing to do except serve up ioctls, 4510 * so most of the standard driver entry points are in zvol.c. 4511 */ 4512 static struct cb_ops zfs_cb_ops = { 4513 zvol_open, /* open */ 4514 zvol_close, /* close */ 4515 zvol_strategy, /* strategy */ 4516 nodev, /* print */ 4517 zvol_dump, /* dump */ 4518 zvol_read, /* read */ 4519 zvol_write, /* write */ 4520 zfsdev_ioctl, /* ioctl */ 4521 nodev, /* devmap */ 4522 nodev, /* mmap */ 4523 nodev, /* segmap */ 4524 nochpoll, /* poll */ 4525 ddi_prop_op, /* prop_op */ 4526 NULL, /* streamtab */ 4527 D_NEW | D_MP | D_64BIT, /* Driver compatibility flag */ 4528 CB_REV, /* version */ 4529 nodev, /* async read */ 4530 nodev, /* async write */ 4531 }; 4532 4533 static struct dev_ops zfs_dev_ops = { 4534 DEVO_REV, /* version */ 4535 0, /* refcnt */ 4536 zfs_info, /* info */ 4537 nulldev, /* identify */ 4538 nulldev, /* probe */ 4539 zfs_attach, /* attach */ 4540 zfs_detach, /* detach */ 4541 nodev, /* reset */ 4542 &zfs_cb_ops, /* driver operations */ 4543 NULL, /* no bus operations */ 4544 NULL, /* power */ 4545 ddi_quiesce_not_needed, /* quiesce */ 4546 }; 4547 4548 static struct modldrv zfs_modldrv = { 4549 &mod_driverops, 4550 "ZFS storage pool", 4551 &zfs_dev_ops 4552 }; 4553 4554 static struct modlinkage modlinkage = { 4555 MODREV_1, 4556 (void *)&zfs_modlfs, 4557 (void *)&zfs_modldrv, 4558 NULL 4559 }; 4560 4561 4562 uint_t zfs_fsyncer_key; 4563 extern uint_t rrw_tsd_key; 4564 4565 int 4566 _init(void) 4567 { 4568 int error; 4569 4570 spa_init(FREAD | FWRITE); 4571 zfs_init(); 4572 zvol_init(); 4573 4574 if ((error = mod_install(&modlinkage)) != 0) { 4575 zvol_fini(); 4576 zfs_fini(); 4577 spa_fini(); 4578 return (error); 4579 } 4580 4581 tsd_create(&zfs_fsyncer_key, NULL); 4582 tsd_create(&rrw_tsd_key, NULL); 4583 4584 error = ldi_ident_from_mod(&modlinkage, &zfs_li); 4585 ASSERT(error == 0); 4586 mutex_init(&zfs_share_lock, NULL, MUTEX_DEFAULT, NULL); 4587 4588 return (0); 4589 } 4590 4591 int 4592 _fini(void) 4593 { 4594 int error; 4595 4596 if (spa_busy() || zfs_busy() || zvol_busy() || zio_injection_enabled) 4597 return (EBUSY); 4598 4599 if ((error = mod_remove(&modlinkage)) != 0) 4600 return (error); 4601 4602 zvol_fini(); 4603 zfs_fini(); 4604 spa_fini(); 4605 if (zfs_nfsshare_inited) 4606 (void) ddi_modclose(nfs_mod); 4607 if (zfs_smbshare_inited) 4608 (void) ddi_modclose(smbsrv_mod); 4609 if (zfs_nfsshare_inited || zfs_smbshare_inited) 4610 (void) ddi_modclose(sharefs_mod); 4611 4612 tsd_destroy(&zfs_fsyncer_key); 4613 ldi_ident_release(zfs_li); 4614 zfs_li = NULL; 4615 mutex_destroy(&zfs_share_lock); 4616 4617 return (error); 4618 } 4619 4620 int 4621 _info(struct modinfo *modinfop) 4622 { 4623 return (mod_info(&modlinkage, modinfop)); 4624 } 4625