1 /* 2 * CDDL HEADER START 3 * 4 * The contents of this file are subject to the terms of the 5 * Common Development and Distribution License (the "License"). 6 * You may not use this file except in compliance with the License. 7 * 8 * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE 9 * or http://www.opensolaris.org/os/licensing. 10 * See the License for the specific language governing permissions 11 * and limitations under the License. 12 * 13 * When distributing Covered Code, include this CDDL HEADER in each 14 * file and include the License file at usr/src/OPENSOLARIS.LICENSE. 15 * If applicable, add the following below this CDDL HEADER, with the 16 * fields enclosed by brackets "[]" replaced with your own identifying 17 * information: Portions Copyright [yyyy] [name of copyright owner] 18 * 19 * CDDL HEADER END 20 */ 21 /* 22 * Copyright (c) 2005, 2010, Oracle and/or its affiliates. All rights reserved. 23 */ 24 25 #include <sys/types.h> 26 #include <sys/param.h> 27 #include <sys/errno.h> 28 #include <sys/uio.h> 29 #include <sys/buf.h> 30 #include <sys/modctl.h> 31 #include <sys/open.h> 32 #include <sys/file.h> 33 #include <sys/kmem.h> 34 #include <sys/conf.h> 35 #include <sys/cmn_err.h> 36 #include <sys/stat.h> 37 #include <sys/zfs_ioctl.h> 38 #include <sys/zfs_vfsops.h> 39 #include <sys/zfs_znode.h> 40 #include <sys/zap.h> 41 #include <sys/spa.h> 42 #include <sys/spa_impl.h> 43 #include <sys/vdev.h> 44 #include <sys/priv_impl.h> 45 #include <sys/dmu.h> 46 #include <sys/dsl_dir.h> 47 #include <sys/dsl_dataset.h> 48 #include <sys/dsl_prop.h> 49 #include <sys/dsl_deleg.h> 50 #include <sys/dmu_objset.h> 51 #include <sys/ddi.h> 52 #include <sys/sunddi.h> 53 #include <sys/sunldi.h> 54 #include <sys/policy.h> 55 #include <sys/zone.h> 56 #include <sys/nvpair.h> 57 #include <sys/pathname.h> 58 #include <sys/mount.h> 59 #include <sys/sdt.h> 60 #include <sys/fs/zfs.h> 61 #include <sys/zfs_ctldir.h> 62 #include <sys/zfs_dir.h> 63 #include <sys/zfs_onexit.h> 64 #include <sys/zvol.h> 65 #include <sys/dsl_scan.h> 66 #include <sharefs/share.h> 67 #include <sys/dmu_objset.h> 68 69 #include "zfs_namecheck.h" 70 #include "zfs_prop.h" 71 #include "zfs_deleg.h" 72 #include "zfs_comutil.h" 73 74 extern struct modlfs zfs_modlfs; 75 76 extern void zfs_init(void); 77 extern void zfs_fini(void); 78 79 ldi_ident_t zfs_li = NULL; 80 dev_info_t *zfs_dip; 81 82 typedef int zfs_ioc_func_t(zfs_cmd_t *); 83 typedef int zfs_secpolicy_func_t(zfs_cmd_t *, cred_t *); 84 85 typedef enum { 86 NO_NAME, 87 POOL_NAME, 88 DATASET_NAME 89 } zfs_ioc_namecheck_t; 90 91 typedef struct zfs_ioc_vec { 92 zfs_ioc_func_t *zvec_func; 93 zfs_secpolicy_func_t *zvec_secpolicy; 94 zfs_ioc_namecheck_t zvec_namecheck; 95 boolean_t zvec_his_log; 96 boolean_t zvec_pool_check; 97 } zfs_ioc_vec_t; 98 99 /* This array is indexed by zfs_userquota_prop_t */ 100 static const char *userquota_perms[] = { 101 ZFS_DELEG_PERM_USERUSED, 102 ZFS_DELEG_PERM_USERQUOTA, 103 ZFS_DELEG_PERM_GROUPUSED, 104 ZFS_DELEG_PERM_GROUPQUOTA, 105 }; 106 107 static int zfs_ioc_userspace_upgrade(zfs_cmd_t *zc); 108 static int zfs_check_settable(const char *name, nvpair_t *property, 109 cred_t *cr); 110 static int zfs_check_clearable(char *dataset, nvlist_t *props, 111 nvlist_t **errors); 112 static int zfs_fill_zplprops_root(uint64_t, nvlist_t *, nvlist_t *, 113 boolean_t *); 114 int zfs_set_prop_nvlist(const char *, zprop_source_t, nvlist_t *, nvlist_t **); 115 116 /* _NOTE(PRINTFLIKE(4)) - this is printf-like, but lint is too whiney */ 117 void 118 __dprintf(const char *file, const char *func, int line, const char *fmt, ...) 119 { 120 const char *newfile; 121 char buf[512]; 122 va_list adx; 123 124 /* 125 * Get rid of annoying "../common/" prefix to filename. 126 */ 127 newfile = strrchr(file, '/'); 128 if (newfile != NULL) { 129 newfile = newfile + 1; /* Get rid of leading / */ 130 } else { 131 newfile = file; 132 } 133 134 va_start(adx, fmt); 135 (void) vsnprintf(buf, sizeof (buf), fmt, adx); 136 va_end(adx); 137 138 /* 139 * To get this data, use the zfs-dprintf probe as so: 140 * dtrace -q -n 'zfs-dprintf \ 141 * /stringof(arg0) == "dbuf.c"/ \ 142 * {printf("%s: %s", stringof(arg1), stringof(arg3))}' 143 * arg0 = file name 144 * arg1 = function name 145 * arg2 = line number 146 * arg3 = message 147 */ 148 DTRACE_PROBE4(zfs__dprintf, 149 char *, newfile, char *, func, int, line, char *, buf); 150 } 151 152 static void 153 history_str_free(char *buf) 154 { 155 kmem_free(buf, HIS_MAX_RECORD_LEN); 156 } 157 158 static char * 159 history_str_get(zfs_cmd_t *zc) 160 { 161 char *buf; 162 163 if (zc->zc_history == NULL) 164 return (NULL); 165 166 buf = kmem_alloc(HIS_MAX_RECORD_LEN, KM_SLEEP); 167 if (copyinstr((void *)(uintptr_t)zc->zc_history, 168 buf, HIS_MAX_RECORD_LEN, NULL) != 0) { 169 history_str_free(buf); 170 return (NULL); 171 } 172 173 buf[HIS_MAX_RECORD_LEN -1] = '\0'; 174 175 return (buf); 176 } 177 178 /* 179 * Check to see if the named dataset is currently defined as bootable 180 */ 181 static boolean_t 182 zfs_is_bootfs(const char *name) 183 { 184 objset_t *os; 185 186 if (dmu_objset_hold(name, FTAG, &os) == 0) { 187 boolean_t ret; 188 ret = (dmu_objset_id(os) == spa_bootfs(dmu_objset_spa(os))); 189 dmu_objset_rele(os, FTAG); 190 return (ret); 191 } 192 return (B_FALSE); 193 } 194 195 /* 196 * zfs_earlier_version 197 * 198 * Return non-zero if the spa version is less than requested version. 199 */ 200 static int 201 zfs_earlier_version(const char *name, int version) 202 { 203 spa_t *spa; 204 205 if (spa_open(name, &spa, FTAG) == 0) { 206 if (spa_version(spa) < version) { 207 spa_close(spa, FTAG); 208 return (1); 209 } 210 spa_close(spa, FTAG); 211 } 212 return (0); 213 } 214 215 /* 216 * zpl_earlier_version 217 * 218 * Return TRUE if the ZPL version is less than requested version. 219 */ 220 static boolean_t 221 zpl_earlier_version(const char *name, int version) 222 { 223 objset_t *os; 224 boolean_t rc = B_TRUE; 225 226 if (dmu_objset_hold(name, FTAG, &os) == 0) { 227 uint64_t zplversion; 228 229 if (dmu_objset_type(os) != DMU_OST_ZFS) { 230 dmu_objset_rele(os, FTAG); 231 return (B_TRUE); 232 } 233 /* XXX reading from non-owned objset */ 234 if (zfs_get_zplprop(os, ZFS_PROP_VERSION, &zplversion) == 0) 235 rc = zplversion < version; 236 dmu_objset_rele(os, FTAG); 237 } 238 return (rc); 239 } 240 241 static void 242 zfs_log_history(zfs_cmd_t *zc) 243 { 244 spa_t *spa; 245 char *buf; 246 247 if ((buf = history_str_get(zc)) == NULL) 248 return; 249 250 if (spa_open(zc->zc_name, &spa, FTAG) == 0) { 251 if (spa_version(spa) >= SPA_VERSION_ZPOOL_HISTORY) 252 (void) spa_history_log(spa, buf, LOG_CMD_NORMAL); 253 spa_close(spa, FTAG); 254 } 255 history_str_free(buf); 256 } 257 258 /* 259 * Policy for top-level read operations (list pools). Requires no privileges, 260 * and can be used in the local zone, as there is no associated dataset. 261 */ 262 /* ARGSUSED */ 263 static int 264 zfs_secpolicy_none(zfs_cmd_t *zc, cred_t *cr) 265 { 266 return (0); 267 } 268 269 /* 270 * Policy for dataset read operations (list children, get statistics). Requires 271 * no privileges, but must be visible in the local zone. 272 */ 273 /* ARGSUSED */ 274 static int 275 zfs_secpolicy_read(zfs_cmd_t *zc, cred_t *cr) 276 { 277 if (INGLOBALZONE(curproc) || 278 zone_dataset_visible(zc->zc_name, NULL)) 279 return (0); 280 281 return (ENOENT); 282 } 283 284 static int 285 zfs_dozonecheck_impl(const char *dataset, uint64_t zoned, cred_t *cr) 286 { 287 int writable = 1; 288 289 /* 290 * The dataset must be visible by this zone -- check this first 291 * so they don't see EPERM on something they shouldn't know about. 292 */ 293 if (!INGLOBALZONE(curproc) && 294 !zone_dataset_visible(dataset, &writable)) 295 return (ENOENT); 296 297 if (INGLOBALZONE(curproc)) { 298 /* 299 * If the fs is zoned, only root can access it from the 300 * global zone. 301 */ 302 if (secpolicy_zfs(cr) && zoned) 303 return (EPERM); 304 } else { 305 /* 306 * If we are in a local zone, the 'zoned' property must be set. 307 */ 308 if (!zoned) 309 return (EPERM); 310 311 /* must be writable by this zone */ 312 if (!writable) 313 return (EPERM); 314 } 315 return (0); 316 } 317 318 static int 319 zfs_dozonecheck(const char *dataset, cred_t *cr) 320 { 321 uint64_t zoned; 322 323 if (dsl_prop_get_integer(dataset, "zoned", &zoned, NULL)) 324 return (ENOENT); 325 326 return (zfs_dozonecheck_impl(dataset, zoned, cr)); 327 } 328 329 static int 330 zfs_dozonecheck_ds(const char *dataset, dsl_dataset_t *ds, cred_t *cr) 331 { 332 uint64_t zoned; 333 334 rw_enter(&ds->ds_dir->dd_pool->dp_config_rwlock, RW_READER); 335 if (dsl_prop_get_ds(ds, "zoned", 8, 1, &zoned, NULL)) { 336 rw_exit(&ds->ds_dir->dd_pool->dp_config_rwlock); 337 return (ENOENT); 338 } 339 rw_exit(&ds->ds_dir->dd_pool->dp_config_rwlock); 340 341 return (zfs_dozonecheck_impl(dataset, zoned, cr)); 342 } 343 344 int 345 zfs_secpolicy_write_perms(const char *name, const char *perm, cred_t *cr) 346 { 347 int error; 348 349 error = zfs_dozonecheck(name, cr); 350 if (error == 0) { 351 error = secpolicy_zfs(cr); 352 if (error) 353 error = dsl_deleg_access(name, perm, cr); 354 } 355 return (error); 356 } 357 358 int 359 zfs_secpolicy_write_perms_ds(const char *name, dsl_dataset_t *ds, 360 const char *perm, cred_t *cr) 361 { 362 int error; 363 364 error = zfs_dozonecheck_ds(name, ds, cr); 365 if (error == 0) { 366 error = secpolicy_zfs(cr); 367 if (error) 368 error = dsl_deleg_access_impl(ds, perm, cr); 369 } 370 return (error); 371 } 372 373 /* 374 * Policy for setting the security label property. 375 * 376 * Returns 0 for success, non-zero for access and other errors. 377 */ 378 static int 379 zfs_set_slabel_policy(const char *name, char *strval, cred_t *cr) 380 { 381 char ds_hexsl[MAXNAMELEN]; 382 bslabel_t ds_sl, new_sl; 383 boolean_t new_default = FALSE; 384 uint64_t zoned; 385 int needed_priv = -1; 386 int error; 387 388 /* First get the existing dataset label. */ 389 error = dsl_prop_get(name, zfs_prop_to_name(ZFS_PROP_MLSLABEL), 390 1, sizeof (ds_hexsl), &ds_hexsl, NULL); 391 if (error) 392 return (EPERM); 393 394 if (strcasecmp(strval, ZFS_MLSLABEL_DEFAULT) == 0) 395 new_default = TRUE; 396 397 /* The label must be translatable */ 398 if (!new_default && (hexstr_to_label(strval, &new_sl) != 0)) 399 return (EINVAL); 400 401 /* 402 * In a non-global zone, disallow attempts to set a label that 403 * doesn't match that of the zone; otherwise no other checks 404 * are needed. 405 */ 406 if (!INGLOBALZONE(curproc)) { 407 if (new_default || !blequal(&new_sl, CR_SL(CRED()))) 408 return (EPERM); 409 return (0); 410 } 411 412 /* 413 * For global-zone datasets (i.e., those whose zoned property is 414 * "off", verify that the specified new label is valid for the 415 * global zone. 416 */ 417 if (dsl_prop_get_integer(name, 418 zfs_prop_to_name(ZFS_PROP_ZONED), &zoned, NULL)) 419 return (EPERM); 420 if (!zoned) { 421 if (zfs_check_global_label(name, strval) != 0) 422 return (EPERM); 423 } 424 425 /* 426 * If the existing dataset label is nondefault, check if the 427 * dataset is mounted (label cannot be changed while mounted). 428 * Get the zfsvfs; if there isn't one, then the dataset isn't 429 * mounted (or isn't a dataset, doesn't exist, ...). 430 */ 431 if (strcasecmp(ds_hexsl, ZFS_MLSLABEL_DEFAULT) != 0) { 432 objset_t *os; 433 static char *setsl_tag = "setsl_tag"; 434 435 /* 436 * Try to own the dataset; abort if there is any error, 437 * (e.g., already mounted, in use, or other error). 438 */ 439 error = dmu_objset_own(name, DMU_OST_ZFS, B_TRUE, 440 setsl_tag, &os); 441 if (error) 442 return (EPERM); 443 444 dmu_objset_disown(os, setsl_tag); 445 446 if (new_default) { 447 needed_priv = PRIV_FILE_DOWNGRADE_SL; 448 goto out_check; 449 } 450 451 if (hexstr_to_label(strval, &new_sl) != 0) 452 return (EPERM); 453 454 if (blstrictdom(&ds_sl, &new_sl)) 455 needed_priv = PRIV_FILE_DOWNGRADE_SL; 456 else if (blstrictdom(&new_sl, &ds_sl)) 457 needed_priv = PRIV_FILE_UPGRADE_SL; 458 } else { 459 /* dataset currently has a default label */ 460 if (!new_default) 461 needed_priv = PRIV_FILE_UPGRADE_SL; 462 } 463 464 out_check: 465 if (needed_priv != -1) 466 return (PRIV_POLICY(cr, needed_priv, B_FALSE, EPERM, NULL)); 467 return (0); 468 } 469 470 static int 471 zfs_secpolicy_setprop(const char *dsname, zfs_prop_t prop, nvpair_t *propval, 472 cred_t *cr) 473 { 474 char *strval; 475 476 /* 477 * Check permissions for special properties. 478 */ 479 switch (prop) { 480 case ZFS_PROP_ZONED: 481 /* 482 * Disallow setting of 'zoned' from within a local zone. 483 */ 484 if (!INGLOBALZONE(curproc)) 485 return (EPERM); 486 break; 487 488 case ZFS_PROP_QUOTA: 489 if (!INGLOBALZONE(curproc)) { 490 uint64_t zoned; 491 char setpoint[MAXNAMELEN]; 492 /* 493 * Unprivileged users are allowed to modify the 494 * quota on things *under* (ie. contained by) 495 * the thing they own. 496 */ 497 if (dsl_prop_get_integer(dsname, "zoned", &zoned, 498 setpoint)) 499 return (EPERM); 500 if (!zoned || strlen(dsname) <= strlen(setpoint)) 501 return (EPERM); 502 } 503 break; 504 505 case ZFS_PROP_MLSLABEL: 506 if (!is_system_labeled()) 507 return (EPERM); 508 509 if (nvpair_value_string(propval, &strval) == 0) { 510 int err; 511 512 err = zfs_set_slabel_policy(dsname, strval, CRED()); 513 if (err != 0) 514 return (err); 515 } 516 break; 517 } 518 519 return (zfs_secpolicy_write_perms(dsname, zfs_prop_to_name(prop), cr)); 520 } 521 522 int 523 zfs_secpolicy_fsacl(zfs_cmd_t *zc, cred_t *cr) 524 { 525 int error; 526 527 error = zfs_dozonecheck(zc->zc_name, cr); 528 if (error) 529 return (error); 530 531 /* 532 * permission to set permissions will be evaluated later in 533 * dsl_deleg_can_allow() 534 */ 535 return (0); 536 } 537 538 int 539 zfs_secpolicy_rollback(zfs_cmd_t *zc, cred_t *cr) 540 { 541 return (zfs_secpolicy_write_perms(zc->zc_name, 542 ZFS_DELEG_PERM_ROLLBACK, cr)); 543 } 544 545 int 546 zfs_secpolicy_send(zfs_cmd_t *zc, cred_t *cr) 547 { 548 spa_t *spa; 549 dsl_pool_t *dp; 550 dsl_dataset_t *ds; 551 char *cp; 552 int error; 553 554 /* 555 * Generate the current snapshot name from the given objsetid, then 556 * use that name for the secpolicy/zone checks. 557 */ 558 cp = strchr(zc->zc_name, '@'); 559 if (cp == NULL) 560 return (EINVAL); 561 error = spa_open(zc->zc_name, &spa, FTAG); 562 if (error) 563 return (error); 564 565 dp = spa_get_dsl(spa); 566 rw_enter(&dp->dp_config_rwlock, RW_READER); 567 error = dsl_dataset_hold_obj(dp, zc->zc_sendobj, FTAG, &ds); 568 rw_exit(&dp->dp_config_rwlock); 569 spa_close(spa, FTAG); 570 if (error) 571 return (error); 572 573 dsl_dataset_name(ds, zc->zc_name); 574 575 error = zfs_secpolicy_write_perms_ds(zc->zc_name, ds, 576 ZFS_DELEG_PERM_SEND, cr); 577 dsl_dataset_rele(ds, FTAG); 578 579 return (error); 580 } 581 582 static int 583 zfs_secpolicy_deleg_share(zfs_cmd_t *zc, cred_t *cr) 584 { 585 vnode_t *vp; 586 int error; 587 588 if ((error = lookupname(zc->zc_value, UIO_SYSSPACE, 589 NO_FOLLOW, NULL, &vp)) != 0) 590 return (error); 591 592 /* Now make sure mntpnt and dataset are ZFS */ 593 594 if (vp->v_vfsp->vfs_fstype != zfsfstype || 595 (strcmp((char *)refstr_value(vp->v_vfsp->vfs_resource), 596 zc->zc_name) != 0)) { 597 VN_RELE(vp); 598 return (EPERM); 599 } 600 601 VN_RELE(vp); 602 return (dsl_deleg_access(zc->zc_name, 603 ZFS_DELEG_PERM_SHARE, cr)); 604 } 605 606 int 607 zfs_secpolicy_share(zfs_cmd_t *zc, cred_t *cr) 608 { 609 if (!INGLOBALZONE(curproc)) 610 return (EPERM); 611 612 if (secpolicy_nfs(cr) == 0) { 613 return (0); 614 } else { 615 return (zfs_secpolicy_deleg_share(zc, cr)); 616 } 617 } 618 619 int 620 zfs_secpolicy_smb_acl(zfs_cmd_t *zc, cred_t *cr) 621 { 622 if (!INGLOBALZONE(curproc)) 623 return (EPERM); 624 625 if (secpolicy_smb(cr) == 0) { 626 return (0); 627 } else { 628 return (zfs_secpolicy_deleg_share(zc, cr)); 629 } 630 } 631 632 static int 633 zfs_get_parent(const char *datasetname, char *parent, int parentsize) 634 { 635 char *cp; 636 637 /* 638 * Remove the @bla or /bla from the end of the name to get the parent. 639 */ 640 (void) strncpy(parent, datasetname, parentsize); 641 cp = strrchr(parent, '@'); 642 if (cp != NULL) { 643 cp[0] = '\0'; 644 } else { 645 cp = strrchr(parent, '/'); 646 if (cp == NULL) 647 return (ENOENT); 648 cp[0] = '\0'; 649 } 650 651 return (0); 652 } 653 654 int 655 zfs_secpolicy_destroy_perms(const char *name, cred_t *cr) 656 { 657 int error; 658 659 if ((error = zfs_secpolicy_write_perms(name, 660 ZFS_DELEG_PERM_MOUNT, cr)) != 0) 661 return (error); 662 663 return (zfs_secpolicy_write_perms(name, ZFS_DELEG_PERM_DESTROY, cr)); 664 } 665 666 static int 667 zfs_secpolicy_destroy(zfs_cmd_t *zc, cred_t *cr) 668 { 669 return (zfs_secpolicy_destroy_perms(zc->zc_name, cr)); 670 } 671 672 /* 673 * Destroying snapshots with delegated permissions requires 674 * descendent mount and destroy permissions. 675 * Reassemble the full filesystem@snap name so dsl_deleg_access() 676 * can do the correct permission check. 677 * 678 * Since this routine is used when doing a recursive destroy of snapshots 679 * and destroying snapshots requires descendent permissions, a successfull 680 * check of the top level snapshot applies to snapshots of all descendent 681 * datasets as well. 682 */ 683 static int 684 zfs_secpolicy_destroy_snaps(zfs_cmd_t *zc, cred_t *cr) 685 { 686 int error; 687 char *dsname; 688 689 dsname = kmem_asprintf("%s@%s", zc->zc_name, zc->zc_value); 690 691 error = zfs_secpolicy_destroy_perms(dsname, cr); 692 693 strfree(dsname); 694 return (error); 695 } 696 697 int 698 zfs_secpolicy_rename_perms(const char *from, const char *to, cred_t *cr) 699 { 700 char parentname[MAXNAMELEN]; 701 int error; 702 703 if ((error = zfs_secpolicy_write_perms(from, 704 ZFS_DELEG_PERM_RENAME, cr)) != 0) 705 return (error); 706 707 if ((error = zfs_secpolicy_write_perms(from, 708 ZFS_DELEG_PERM_MOUNT, cr)) != 0) 709 return (error); 710 711 if ((error = zfs_get_parent(to, parentname, 712 sizeof (parentname))) != 0) 713 return (error); 714 715 if ((error = zfs_secpolicy_write_perms(parentname, 716 ZFS_DELEG_PERM_CREATE, cr)) != 0) 717 return (error); 718 719 if ((error = zfs_secpolicy_write_perms(parentname, 720 ZFS_DELEG_PERM_MOUNT, cr)) != 0) 721 return (error); 722 723 return (error); 724 } 725 726 static int 727 zfs_secpolicy_rename(zfs_cmd_t *zc, cred_t *cr) 728 { 729 return (zfs_secpolicy_rename_perms(zc->zc_name, zc->zc_value, cr)); 730 } 731 732 static int 733 zfs_secpolicy_promote(zfs_cmd_t *zc, cred_t *cr) 734 { 735 char parentname[MAXNAMELEN]; 736 objset_t *clone; 737 int error; 738 739 error = zfs_secpolicy_write_perms(zc->zc_name, 740 ZFS_DELEG_PERM_PROMOTE, cr); 741 if (error) 742 return (error); 743 744 error = dmu_objset_hold(zc->zc_name, FTAG, &clone); 745 746 if (error == 0) { 747 dsl_dataset_t *pclone = NULL; 748 dsl_dir_t *dd; 749 dd = clone->os_dsl_dataset->ds_dir; 750 751 rw_enter(&dd->dd_pool->dp_config_rwlock, RW_READER); 752 error = dsl_dataset_hold_obj(dd->dd_pool, 753 dd->dd_phys->dd_origin_obj, FTAG, &pclone); 754 rw_exit(&dd->dd_pool->dp_config_rwlock); 755 if (error) { 756 dmu_objset_rele(clone, FTAG); 757 return (error); 758 } 759 760 error = zfs_secpolicy_write_perms(zc->zc_name, 761 ZFS_DELEG_PERM_MOUNT, cr); 762 763 dsl_dataset_name(pclone, parentname); 764 dmu_objset_rele(clone, FTAG); 765 dsl_dataset_rele(pclone, FTAG); 766 if (error == 0) 767 error = zfs_secpolicy_write_perms(parentname, 768 ZFS_DELEG_PERM_PROMOTE, cr); 769 } 770 return (error); 771 } 772 773 static int 774 zfs_secpolicy_receive(zfs_cmd_t *zc, cred_t *cr) 775 { 776 int error; 777 778 if ((error = zfs_secpolicy_write_perms(zc->zc_name, 779 ZFS_DELEG_PERM_RECEIVE, cr)) != 0) 780 return (error); 781 782 if ((error = zfs_secpolicy_write_perms(zc->zc_name, 783 ZFS_DELEG_PERM_MOUNT, cr)) != 0) 784 return (error); 785 786 return (zfs_secpolicy_write_perms(zc->zc_name, 787 ZFS_DELEG_PERM_CREATE, cr)); 788 } 789 790 int 791 zfs_secpolicy_snapshot_perms(const char *name, cred_t *cr) 792 { 793 return (zfs_secpolicy_write_perms(name, 794 ZFS_DELEG_PERM_SNAPSHOT, cr)); 795 } 796 797 static int 798 zfs_secpolicy_snapshot(zfs_cmd_t *zc, cred_t *cr) 799 { 800 801 return (zfs_secpolicy_snapshot_perms(zc->zc_name, cr)); 802 } 803 804 static int 805 zfs_secpolicy_create(zfs_cmd_t *zc, cred_t *cr) 806 { 807 char parentname[MAXNAMELEN]; 808 int error; 809 810 if ((error = zfs_get_parent(zc->zc_name, parentname, 811 sizeof (parentname))) != 0) 812 return (error); 813 814 if (zc->zc_value[0] != '\0') { 815 if ((error = zfs_secpolicy_write_perms(zc->zc_value, 816 ZFS_DELEG_PERM_CLONE, cr)) != 0) 817 return (error); 818 } 819 820 if ((error = zfs_secpolicy_write_perms(parentname, 821 ZFS_DELEG_PERM_CREATE, cr)) != 0) 822 return (error); 823 824 error = zfs_secpolicy_write_perms(parentname, 825 ZFS_DELEG_PERM_MOUNT, cr); 826 827 return (error); 828 } 829 830 static int 831 zfs_secpolicy_umount(zfs_cmd_t *zc, cred_t *cr) 832 { 833 int error; 834 835 error = secpolicy_fs_unmount(cr, NULL); 836 if (error) { 837 error = dsl_deleg_access(zc->zc_name, ZFS_DELEG_PERM_MOUNT, cr); 838 } 839 return (error); 840 } 841 842 /* 843 * Policy for pool operations - create/destroy pools, add vdevs, etc. Requires 844 * SYS_CONFIG privilege, which is not available in a local zone. 845 */ 846 /* ARGSUSED */ 847 static int 848 zfs_secpolicy_config(zfs_cmd_t *zc, cred_t *cr) 849 { 850 if (secpolicy_sys_config(cr, B_FALSE) != 0) 851 return (EPERM); 852 853 return (0); 854 } 855 856 /* 857 * Policy for fault injection. Requires all privileges. 858 */ 859 /* ARGSUSED */ 860 static int 861 zfs_secpolicy_inject(zfs_cmd_t *zc, cred_t *cr) 862 { 863 return (secpolicy_zinject(cr)); 864 } 865 866 static int 867 zfs_secpolicy_inherit(zfs_cmd_t *zc, cred_t *cr) 868 { 869 zfs_prop_t prop = zfs_name_to_prop(zc->zc_value); 870 871 if (prop == ZPROP_INVAL) { 872 if (!zfs_prop_user(zc->zc_value)) 873 return (EINVAL); 874 return (zfs_secpolicy_write_perms(zc->zc_name, 875 ZFS_DELEG_PERM_USERPROP, cr)); 876 } else { 877 return (zfs_secpolicy_setprop(zc->zc_name, prop, 878 NULL, cr)); 879 } 880 } 881 882 static int 883 zfs_secpolicy_userspace_one(zfs_cmd_t *zc, cred_t *cr) 884 { 885 int err = zfs_secpolicy_read(zc, cr); 886 if (err) 887 return (err); 888 889 if (zc->zc_objset_type >= ZFS_NUM_USERQUOTA_PROPS) 890 return (EINVAL); 891 892 if (zc->zc_value[0] == 0) { 893 /* 894 * They are asking about a posix uid/gid. If it's 895 * themself, allow it. 896 */ 897 if (zc->zc_objset_type == ZFS_PROP_USERUSED || 898 zc->zc_objset_type == ZFS_PROP_USERQUOTA) { 899 if (zc->zc_guid == crgetuid(cr)) 900 return (0); 901 } else { 902 if (groupmember(zc->zc_guid, cr)) 903 return (0); 904 } 905 } 906 907 return (zfs_secpolicy_write_perms(zc->zc_name, 908 userquota_perms[zc->zc_objset_type], cr)); 909 } 910 911 static int 912 zfs_secpolicy_userspace_many(zfs_cmd_t *zc, cred_t *cr) 913 { 914 int err = zfs_secpolicy_read(zc, cr); 915 if (err) 916 return (err); 917 918 if (zc->zc_objset_type >= ZFS_NUM_USERQUOTA_PROPS) 919 return (EINVAL); 920 921 return (zfs_secpolicy_write_perms(zc->zc_name, 922 userquota_perms[zc->zc_objset_type], cr)); 923 } 924 925 static int 926 zfs_secpolicy_userspace_upgrade(zfs_cmd_t *zc, cred_t *cr) 927 { 928 return (zfs_secpolicy_setprop(zc->zc_name, ZFS_PROP_VERSION, 929 NULL, cr)); 930 } 931 932 static int 933 zfs_secpolicy_hold(zfs_cmd_t *zc, cred_t *cr) 934 { 935 return (zfs_secpolicy_write_perms(zc->zc_name, 936 ZFS_DELEG_PERM_HOLD, cr)); 937 } 938 939 static int 940 zfs_secpolicy_release(zfs_cmd_t *zc, cred_t *cr) 941 { 942 return (zfs_secpolicy_write_perms(zc->zc_name, 943 ZFS_DELEG_PERM_RELEASE, cr)); 944 } 945 946 /* 947 * Returns the nvlist as specified by the user in the zfs_cmd_t. 948 */ 949 static int 950 get_nvlist(uint64_t nvl, uint64_t size, int iflag, nvlist_t **nvp) 951 { 952 char *packed; 953 int error; 954 nvlist_t *list = NULL; 955 956 /* 957 * Read in and unpack the user-supplied nvlist. 958 */ 959 if (size == 0) 960 return (EINVAL); 961 962 packed = kmem_alloc(size, KM_SLEEP); 963 964 if ((error = ddi_copyin((void *)(uintptr_t)nvl, packed, size, 965 iflag)) != 0) { 966 kmem_free(packed, size); 967 return (error); 968 } 969 970 if ((error = nvlist_unpack(packed, size, &list, 0)) != 0) { 971 kmem_free(packed, size); 972 return (error); 973 } 974 975 kmem_free(packed, size); 976 977 *nvp = list; 978 return (0); 979 } 980 981 static int 982 fit_error_list(zfs_cmd_t *zc, nvlist_t **errors) 983 { 984 size_t size; 985 986 VERIFY(nvlist_size(*errors, &size, NV_ENCODE_NATIVE) == 0); 987 988 if (size > zc->zc_nvlist_dst_size) { 989 nvpair_t *more_errors; 990 int n = 0; 991 992 if (zc->zc_nvlist_dst_size < 1024) 993 return (ENOMEM); 994 995 VERIFY(nvlist_add_int32(*errors, ZPROP_N_MORE_ERRORS, 0) == 0); 996 more_errors = nvlist_prev_nvpair(*errors, NULL); 997 998 do { 999 nvpair_t *pair = nvlist_prev_nvpair(*errors, 1000 more_errors); 1001 VERIFY(nvlist_remove_nvpair(*errors, pair) == 0); 1002 n++; 1003 VERIFY(nvlist_size(*errors, &size, 1004 NV_ENCODE_NATIVE) == 0); 1005 } while (size > zc->zc_nvlist_dst_size); 1006 1007 VERIFY(nvlist_remove_nvpair(*errors, more_errors) == 0); 1008 VERIFY(nvlist_add_int32(*errors, ZPROP_N_MORE_ERRORS, n) == 0); 1009 ASSERT(nvlist_size(*errors, &size, NV_ENCODE_NATIVE) == 0); 1010 ASSERT(size <= zc->zc_nvlist_dst_size); 1011 } 1012 1013 return (0); 1014 } 1015 1016 static int 1017 put_nvlist(zfs_cmd_t *zc, nvlist_t *nvl) 1018 { 1019 char *packed = NULL; 1020 int error = 0; 1021 size_t size; 1022 1023 VERIFY(nvlist_size(nvl, &size, NV_ENCODE_NATIVE) == 0); 1024 1025 if (size > zc->zc_nvlist_dst_size) { 1026 error = ENOMEM; 1027 } else { 1028 packed = kmem_alloc(size, KM_SLEEP); 1029 VERIFY(nvlist_pack(nvl, &packed, &size, NV_ENCODE_NATIVE, 1030 KM_SLEEP) == 0); 1031 if (ddi_copyout(packed, (void *)(uintptr_t)zc->zc_nvlist_dst, 1032 size, zc->zc_iflags) != 0) 1033 error = EFAULT; 1034 kmem_free(packed, size); 1035 } 1036 1037 zc->zc_nvlist_dst_size = size; 1038 return (error); 1039 } 1040 1041 static int 1042 getzfsvfs(const char *dsname, zfsvfs_t **zfvp) 1043 { 1044 objset_t *os; 1045 int error; 1046 1047 error = dmu_objset_hold(dsname, FTAG, &os); 1048 if (error) 1049 return (error); 1050 if (dmu_objset_type(os) != DMU_OST_ZFS) { 1051 dmu_objset_rele(os, FTAG); 1052 return (EINVAL); 1053 } 1054 1055 mutex_enter(&os->os_user_ptr_lock); 1056 *zfvp = dmu_objset_get_user(os); 1057 if (*zfvp) { 1058 VFS_HOLD((*zfvp)->z_vfs); 1059 } else { 1060 error = ESRCH; 1061 } 1062 mutex_exit(&os->os_user_ptr_lock); 1063 dmu_objset_rele(os, FTAG); 1064 return (error); 1065 } 1066 1067 /* 1068 * Find a zfsvfs_t for a mounted filesystem, or create our own, in which 1069 * case its z_vfs will be NULL, and it will be opened as the owner. 1070 */ 1071 static int 1072 zfsvfs_hold(const char *name, void *tag, zfsvfs_t **zfvp, boolean_t writer) 1073 { 1074 int error = 0; 1075 1076 if (getzfsvfs(name, zfvp) != 0) 1077 error = zfsvfs_create(name, zfvp); 1078 if (error == 0) { 1079 rrw_enter(&(*zfvp)->z_teardown_lock, (writer) ? RW_WRITER : 1080 RW_READER, tag); 1081 if ((*zfvp)->z_unmounted) { 1082 /* 1083 * XXX we could probably try again, since the unmounting 1084 * thread should be just about to disassociate the 1085 * objset from the zfsvfs. 1086 */ 1087 rrw_exit(&(*zfvp)->z_teardown_lock, tag); 1088 return (EBUSY); 1089 } 1090 } 1091 return (error); 1092 } 1093 1094 static void 1095 zfsvfs_rele(zfsvfs_t *zfsvfs, void *tag) 1096 { 1097 rrw_exit(&zfsvfs->z_teardown_lock, tag); 1098 1099 if (zfsvfs->z_vfs) { 1100 VFS_RELE(zfsvfs->z_vfs); 1101 } else { 1102 dmu_objset_disown(zfsvfs->z_os, zfsvfs); 1103 zfsvfs_free(zfsvfs); 1104 } 1105 } 1106 1107 static int 1108 zfs_ioc_pool_create(zfs_cmd_t *zc) 1109 { 1110 int error; 1111 nvlist_t *config, *props = NULL; 1112 nvlist_t *rootprops = NULL; 1113 nvlist_t *zplprops = NULL; 1114 char *buf; 1115 1116 if (error = get_nvlist(zc->zc_nvlist_conf, zc->zc_nvlist_conf_size, 1117 zc->zc_iflags, &config)) 1118 return (error); 1119 1120 if (zc->zc_nvlist_src_size != 0 && (error = 1121 get_nvlist(zc->zc_nvlist_src, zc->zc_nvlist_src_size, 1122 zc->zc_iflags, &props))) { 1123 nvlist_free(config); 1124 return (error); 1125 } 1126 1127 if (props) { 1128 nvlist_t *nvl = NULL; 1129 uint64_t version = SPA_VERSION; 1130 1131 (void) nvlist_lookup_uint64(props, 1132 zpool_prop_to_name(ZPOOL_PROP_VERSION), &version); 1133 if (version < SPA_VERSION_INITIAL || version > SPA_VERSION) { 1134 error = EINVAL; 1135 goto pool_props_bad; 1136 } 1137 (void) nvlist_lookup_nvlist(props, ZPOOL_ROOTFS_PROPS, &nvl); 1138 if (nvl) { 1139 error = nvlist_dup(nvl, &rootprops, KM_SLEEP); 1140 if (error != 0) { 1141 nvlist_free(config); 1142 nvlist_free(props); 1143 return (error); 1144 } 1145 (void) nvlist_remove_all(props, ZPOOL_ROOTFS_PROPS); 1146 } 1147 VERIFY(nvlist_alloc(&zplprops, NV_UNIQUE_NAME, KM_SLEEP) == 0); 1148 error = zfs_fill_zplprops_root(version, rootprops, 1149 zplprops, NULL); 1150 if (error) 1151 goto pool_props_bad; 1152 } 1153 1154 buf = history_str_get(zc); 1155 1156 error = spa_create(zc->zc_name, config, props, buf, zplprops); 1157 1158 /* 1159 * Set the remaining root properties 1160 */ 1161 if (!error && (error = zfs_set_prop_nvlist(zc->zc_name, 1162 ZPROP_SRC_LOCAL, rootprops, NULL)) != 0) 1163 (void) spa_destroy(zc->zc_name); 1164 1165 if (buf != NULL) 1166 history_str_free(buf); 1167 1168 pool_props_bad: 1169 nvlist_free(rootprops); 1170 nvlist_free(zplprops); 1171 nvlist_free(config); 1172 nvlist_free(props); 1173 1174 return (error); 1175 } 1176 1177 static int 1178 zfs_ioc_pool_destroy(zfs_cmd_t *zc) 1179 { 1180 int error; 1181 zfs_log_history(zc); 1182 error = spa_destroy(zc->zc_name); 1183 if (error == 0) 1184 zvol_remove_minors(zc->zc_name); 1185 return (error); 1186 } 1187 1188 static int 1189 zfs_ioc_pool_import(zfs_cmd_t *zc) 1190 { 1191 nvlist_t *config, *props = NULL; 1192 uint64_t guid; 1193 int error; 1194 1195 if ((error = get_nvlist(zc->zc_nvlist_conf, zc->zc_nvlist_conf_size, 1196 zc->zc_iflags, &config)) != 0) 1197 return (error); 1198 1199 if (zc->zc_nvlist_src_size != 0 && (error = 1200 get_nvlist(zc->zc_nvlist_src, zc->zc_nvlist_src_size, 1201 zc->zc_iflags, &props))) { 1202 nvlist_free(config); 1203 return (error); 1204 } 1205 1206 if (nvlist_lookup_uint64(config, ZPOOL_CONFIG_POOL_GUID, &guid) != 0 || 1207 guid != zc->zc_guid) 1208 error = EINVAL; 1209 else if (zc->zc_cookie) 1210 error = spa_import_verbatim(zc->zc_name, config, props); 1211 else 1212 error = spa_import(zc->zc_name, config, props); 1213 1214 if (zc->zc_nvlist_dst != 0) 1215 (void) put_nvlist(zc, config); 1216 1217 nvlist_free(config); 1218 1219 if (props) 1220 nvlist_free(props); 1221 1222 return (error); 1223 } 1224 1225 static int 1226 zfs_ioc_pool_export(zfs_cmd_t *zc) 1227 { 1228 int error; 1229 boolean_t force = (boolean_t)zc->zc_cookie; 1230 boolean_t hardforce = (boolean_t)zc->zc_guid; 1231 1232 zfs_log_history(zc); 1233 error = spa_export(zc->zc_name, NULL, force, hardforce); 1234 if (error == 0) 1235 zvol_remove_minors(zc->zc_name); 1236 return (error); 1237 } 1238 1239 static int 1240 zfs_ioc_pool_configs(zfs_cmd_t *zc) 1241 { 1242 nvlist_t *configs; 1243 int error; 1244 1245 if ((configs = spa_all_configs(&zc->zc_cookie)) == NULL) 1246 return (EEXIST); 1247 1248 error = put_nvlist(zc, configs); 1249 1250 nvlist_free(configs); 1251 1252 return (error); 1253 } 1254 1255 static int 1256 zfs_ioc_pool_stats(zfs_cmd_t *zc) 1257 { 1258 nvlist_t *config; 1259 int error; 1260 int ret = 0; 1261 1262 error = spa_get_stats(zc->zc_name, &config, zc->zc_value, 1263 sizeof (zc->zc_value)); 1264 1265 if (config != NULL) { 1266 ret = put_nvlist(zc, config); 1267 nvlist_free(config); 1268 1269 /* 1270 * The config may be present even if 'error' is non-zero. 1271 * In this case we return success, and preserve the real errno 1272 * in 'zc_cookie'. 1273 */ 1274 zc->zc_cookie = error; 1275 } else { 1276 ret = error; 1277 } 1278 1279 return (ret); 1280 } 1281 1282 /* 1283 * Try to import the given pool, returning pool stats as appropriate so that 1284 * user land knows which devices are available and overall pool health. 1285 */ 1286 static int 1287 zfs_ioc_pool_tryimport(zfs_cmd_t *zc) 1288 { 1289 nvlist_t *tryconfig, *config; 1290 int error; 1291 1292 if ((error = get_nvlist(zc->zc_nvlist_conf, zc->zc_nvlist_conf_size, 1293 zc->zc_iflags, &tryconfig)) != 0) 1294 return (error); 1295 1296 config = spa_tryimport(tryconfig); 1297 1298 nvlist_free(tryconfig); 1299 1300 if (config == NULL) 1301 return (EINVAL); 1302 1303 error = put_nvlist(zc, config); 1304 nvlist_free(config); 1305 1306 return (error); 1307 } 1308 1309 /* 1310 * inputs: 1311 * zc_name name of the pool 1312 * zc_cookie scan func (pool_scan_func_t) 1313 */ 1314 static int 1315 zfs_ioc_pool_scan(zfs_cmd_t *zc) 1316 { 1317 spa_t *spa; 1318 int error; 1319 1320 if ((error = spa_open(zc->zc_name, &spa, FTAG)) != 0) 1321 return (error); 1322 1323 if (zc->zc_cookie == POOL_SCAN_NONE) 1324 error = spa_scan_stop(spa); 1325 else 1326 error = spa_scan(spa, zc->zc_cookie); 1327 1328 spa_close(spa, FTAG); 1329 1330 return (error); 1331 } 1332 1333 static int 1334 zfs_ioc_pool_freeze(zfs_cmd_t *zc) 1335 { 1336 spa_t *spa; 1337 int error; 1338 1339 error = spa_open(zc->zc_name, &spa, FTAG); 1340 if (error == 0) { 1341 spa_freeze(spa); 1342 spa_close(spa, FTAG); 1343 } 1344 return (error); 1345 } 1346 1347 static int 1348 zfs_ioc_pool_upgrade(zfs_cmd_t *zc) 1349 { 1350 spa_t *spa; 1351 int error; 1352 1353 if ((error = spa_open(zc->zc_name, &spa, FTAG)) != 0) 1354 return (error); 1355 1356 if (zc->zc_cookie < spa_version(spa) || zc->zc_cookie > SPA_VERSION) { 1357 spa_close(spa, FTAG); 1358 return (EINVAL); 1359 } 1360 1361 spa_upgrade(spa, zc->zc_cookie); 1362 spa_close(spa, FTAG); 1363 1364 return (error); 1365 } 1366 1367 static int 1368 zfs_ioc_pool_get_history(zfs_cmd_t *zc) 1369 { 1370 spa_t *spa; 1371 char *hist_buf; 1372 uint64_t size; 1373 int error; 1374 1375 if ((size = zc->zc_history_len) == 0) 1376 return (EINVAL); 1377 1378 if ((error = spa_open(zc->zc_name, &spa, FTAG)) != 0) 1379 return (error); 1380 1381 if (spa_version(spa) < SPA_VERSION_ZPOOL_HISTORY) { 1382 spa_close(spa, FTAG); 1383 return (ENOTSUP); 1384 } 1385 1386 hist_buf = kmem_alloc(size, KM_SLEEP); 1387 if ((error = spa_history_get(spa, &zc->zc_history_offset, 1388 &zc->zc_history_len, hist_buf)) == 0) { 1389 error = ddi_copyout(hist_buf, 1390 (void *)(uintptr_t)zc->zc_history, 1391 zc->zc_history_len, zc->zc_iflags); 1392 } 1393 1394 spa_close(spa, FTAG); 1395 kmem_free(hist_buf, size); 1396 return (error); 1397 } 1398 1399 static int 1400 zfs_ioc_dsobj_to_dsname(zfs_cmd_t *zc) 1401 { 1402 int error; 1403 1404 if (error = dsl_dsobj_to_dsname(zc->zc_name, zc->zc_obj, zc->zc_value)) 1405 return (error); 1406 1407 return (0); 1408 } 1409 1410 /* 1411 * inputs: 1412 * zc_name name of filesystem 1413 * zc_obj object to find 1414 * 1415 * outputs: 1416 * zc_value name of object 1417 */ 1418 static int 1419 zfs_ioc_obj_to_path(zfs_cmd_t *zc) 1420 { 1421 objset_t *os; 1422 int error; 1423 1424 /* XXX reading from objset not owned */ 1425 if ((error = dmu_objset_hold(zc->zc_name, FTAG, &os)) != 0) 1426 return (error); 1427 if (dmu_objset_type(os) != DMU_OST_ZFS) { 1428 dmu_objset_rele(os, FTAG); 1429 return (EINVAL); 1430 } 1431 error = zfs_obj_to_path(os, zc->zc_obj, zc->zc_value, 1432 sizeof (zc->zc_value)); 1433 dmu_objset_rele(os, FTAG); 1434 1435 return (error); 1436 } 1437 1438 static int 1439 zfs_ioc_vdev_add(zfs_cmd_t *zc) 1440 { 1441 spa_t *spa; 1442 int error; 1443 nvlist_t *config, **l2cache, **spares; 1444 uint_t nl2cache = 0, nspares = 0; 1445 1446 error = spa_open(zc->zc_name, &spa, FTAG); 1447 if (error != 0) 1448 return (error); 1449 1450 error = get_nvlist(zc->zc_nvlist_conf, zc->zc_nvlist_conf_size, 1451 zc->zc_iflags, &config); 1452 (void) nvlist_lookup_nvlist_array(config, ZPOOL_CONFIG_L2CACHE, 1453 &l2cache, &nl2cache); 1454 1455 (void) nvlist_lookup_nvlist_array(config, ZPOOL_CONFIG_SPARES, 1456 &spares, &nspares); 1457 1458 /* 1459 * A root pool with concatenated devices is not supported. 1460 * Thus, can not add a device to a root pool. 1461 * 1462 * Intent log device can not be added to a rootpool because 1463 * during mountroot, zil is replayed, a seperated log device 1464 * can not be accessed during the mountroot time. 1465 * 1466 * l2cache and spare devices are ok to be added to a rootpool. 1467 */ 1468 if (spa_bootfs(spa) != 0 && nl2cache == 0 && nspares == 0) { 1469 nvlist_free(config); 1470 spa_close(spa, FTAG); 1471 return (EDOM); 1472 } 1473 1474 if (error == 0) { 1475 error = spa_vdev_add(spa, config); 1476 nvlist_free(config); 1477 } 1478 spa_close(spa, FTAG); 1479 return (error); 1480 } 1481 1482 /* 1483 * inputs: 1484 * zc_name name of the pool 1485 * zc_nvlist_conf nvlist of devices to remove 1486 * zc_cookie to stop the remove? 1487 */ 1488 static int 1489 zfs_ioc_vdev_remove(zfs_cmd_t *zc) 1490 { 1491 spa_t *spa; 1492 int error; 1493 1494 error = spa_open(zc->zc_name, &spa, FTAG); 1495 if (error != 0) 1496 return (error); 1497 error = spa_vdev_remove(spa, zc->zc_guid, B_FALSE); 1498 spa_close(spa, FTAG); 1499 return (error); 1500 } 1501 1502 static int 1503 zfs_ioc_vdev_set_state(zfs_cmd_t *zc) 1504 { 1505 spa_t *spa; 1506 int error; 1507 vdev_state_t newstate = VDEV_STATE_UNKNOWN; 1508 1509 if ((error = spa_open(zc->zc_name, &spa, FTAG)) != 0) 1510 return (error); 1511 switch (zc->zc_cookie) { 1512 case VDEV_STATE_ONLINE: 1513 error = vdev_online(spa, zc->zc_guid, zc->zc_obj, &newstate); 1514 break; 1515 1516 case VDEV_STATE_OFFLINE: 1517 error = vdev_offline(spa, zc->zc_guid, zc->zc_obj); 1518 break; 1519 1520 case VDEV_STATE_FAULTED: 1521 if (zc->zc_obj != VDEV_AUX_ERR_EXCEEDED && 1522 zc->zc_obj != VDEV_AUX_EXTERNAL) 1523 zc->zc_obj = VDEV_AUX_ERR_EXCEEDED; 1524 1525 error = vdev_fault(spa, zc->zc_guid, zc->zc_obj); 1526 break; 1527 1528 case VDEV_STATE_DEGRADED: 1529 if (zc->zc_obj != VDEV_AUX_ERR_EXCEEDED && 1530 zc->zc_obj != VDEV_AUX_EXTERNAL) 1531 zc->zc_obj = VDEV_AUX_ERR_EXCEEDED; 1532 1533 error = vdev_degrade(spa, zc->zc_guid, zc->zc_obj); 1534 break; 1535 1536 default: 1537 error = EINVAL; 1538 } 1539 zc->zc_cookie = newstate; 1540 spa_close(spa, FTAG); 1541 return (error); 1542 } 1543 1544 static int 1545 zfs_ioc_vdev_attach(zfs_cmd_t *zc) 1546 { 1547 spa_t *spa; 1548 int replacing = zc->zc_cookie; 1549 nvlist_t *config; 1550 int error; 1551 1552 if ((error = spa_open(zc->zc_name, &spa, FTAG)) != 0) 1553 return (error); 1554 1555 if ((error = get_nvlist(zc->zc_nvlist_conf, zc->zc_nvlist_conf_size, 1556 zc->zc_iflags, &config)) == 0) { 1557 error = spa_vdev_attach(spa, zc->zc_guid, config, replacing); 1558 nvlist_free(config); 1559 } 1560 1561 spa_close(spa, FTAG); 1562 return (error); 1563 } 1564 1565 static int 1566 zfs_ioc_vdev_detach(zfs_cmd_t *zc) 1567 { 1568 spa_t *spa; 1569 int error; 1570 1571 if ((error = spa_open(zc->zc_name, &spa, FTAG)) != 0) 1572 return (error); 1573 1574 error = spa_vdev_detach(spa, zc->zc_guid, 0, B_FALSE); 1575 1576 spa_close(spa, FTAG); 1577 return (error); 1578 } 1579 1580 static int 1581 zfs_ioc_vdev_split(zfs_cmd_t *zc) 1582 { 1583 spa_t *spa; 1584 nvlist_t *config, *props = NULL; 1585 int error; 1586 boolean_t exp = !!(zc->zc_cookie & ZPOOL_EXPORT_AFTER_SPLIT); 1587 1588 if ((error = spa_open(zc->zc_name, &spa, FTAG)) != 0) 1589 return (error); 1590 1591 if (error = get_nvlist(zc->zc_nvlist_conf, zc->zc_nvlist_conf_size, 1592 zc->zc_iflags, &config)) { 1593 spa_close(spa, FTAG); 1594 return (error); 1595 } 1596 1597 if (zc->zc_nvlist_src_size != 0 && (error = 1598 get_nvlist(zc->zc_nvlist_src, zc->zc_nvlist_src_size, 1599 zc->zc_iflags, &props))) { 1600 spa_close(spa, FTAG); 1601 nvlist_free(config); 1602 return (error); 1603 } 1604 1605 error = spa_vdev_split_mirror(spa, zc->zc_string, config, props, exp); 1606 1607 spa_close(spa, FTAG); 1608 1609 nvlist_free(config); 1610 nvlist_free(props); 1611 1612 return (error); 1613 } 1614 1615 static int 1616 zfs_ioc_vdev_setpath(zfs_cmd_t *zc) 1617 { 1618 spa_t *spa; 1619 char *path = zc->zc_value; 1620 uint64_t guid = zc->zc_guid; 1621 int error; 1622 1623 error = spa_open(zc->zc_name, &spa, FTAG); 1624 if (error != 0) 1625 return (error); 1626 1627 error = spa_vdev_setpath(spa, guid, path); 1628 spa_close(spa, FTAG); 1629 return (error); 1630 } 1631 1632 static int 1633 zfs_ioc_vdev_setfru(zfs_cmd_t *zc) 1634 { 1635 spa_t *spa; 1636 char *fru = zc->zc_value; 1637 uint64_t guid = zc->zc_guid; 1638 int error; 1639 1640 error = spa_open(zc->zc_name, &spa, FTAG); 1641 if (error != 0) 1642 return (error); 1643 1644 error = spa_vdev_setfru(spa, guid, fru); 1645 spa_close(spa, FTAG); 1646 return (error); 1647 } 1648 1649 static int 1650 zfs_ioc_objset_stats_impl(zfs_cmd_t *zc, objset_t *os) 1651 { 1652 int error = 0; 1653 nvlist_t *nv; 1654 1655 dmu_objset_fast_stat(os, &zc->zc_objset_stats); 1656 1657 if (zc->zc_nvlist_dst != 0 && 1658 (error = dsl_prop_get_all(os, &nv)) == 0) { 1659 dmu_objset_stats(os, nv); 1660 /* 1661 * NB: zvol_get_stats() will read the objset contents, 1662 * which we aren't supposed to do with a 1663 * DS_MODE_USER hold, because it could be 1664 * inconsistent. So this is a bit of a workaround... 1665 * XXX reading with out owning 1666 */ 1667 if (!zc->zc_objset_stats.dds_inconsistent) { 1668 if (dmu_objset_type(os) == DMU_OST_ZVOL) 1669 VERIFY(zvol_get_stats(os, nv) == 0); 1670 } 1671 error = put_nvlist(zc, nv); 1672 nvlist_free(nv); 1673 } 1674 1675 return (error); 1676 } 1677 1678 /* 1679 * inputs: 1680 * zc_name name of filesystem 1681 * zc_nvlist_dst_size size of buffer for property nvlist 1682 * 1683 * outputs: 1684 * zc_objset_stats stats 1685 * zc_nvlist_dst property nvlist 1686 * zc_nvlist_dst_size size of property nvlist 1687 */ 1688 static int 1689 zfs_ioc_objset_stats(zfs_cmd_t *zc) 1690 { 1691 objset_t *os = NULL; 1692 int error; 1693 1694 if (error = dmu_objset_hold(zc->zc_name, FTAG, &os)) 1695 return (error); 1696 1697 error = zfs_ioc_objset_stats_impl(zc, os); 1698 1699 dmu_objset_rele(os, FTAG); 1700 1701 return (error); 1702 } 1703 1704 /* 1705 * inputs: 1706 * zc_name name of filesystem 1707 * zc_nvlist_dst_size size of buffer for property nvlist 1708 * 1709 * outputs: 1710 * zc_nvlist_dst received property nvlist 1711 * zc_nvlist_dst_size size of received property nvlist 1712 * 1713 * Gets received properties (distinct from local properties on or after 1714 * SPA_VERSION_RECVD_PROPS) for callers who want to differentiate received from 1715 * local property values. 1716 */ 1717 static int 1718 zfs_ioc_objset_recvd_props(zfs_cmd_t *zc) 1719 { 1720 objset_t *os = NULL; 1721 int error; 1722 nvlist_t *nv; 1723 1724 if (error = dmu_objset_hold(zc->zc_name, FTAG, &os)) 1725 return (error); 1726 1727 /* 1728 * Without this check, we would return local property values if the 1729 * caller has not already received properties on or after 1730 * SPA_VERSION_RECVD_PROPS. 1731 */ 1732 if (!dsl_prop_get_hasrecvd(os)) { 1733 dmu_objset_rele(os, FTAG); 1734 return (ENOTSUP); 1735 } 1736 1737 if (zc->zc_nvlist_dst != 0 && 1738 (error = dsl_prop_get_received(os, &nv)) == 0) { 1739 error = put_nvlist(zc, nv); 1740 nvlist_free(nv); 1741 } 1742 1743 dmu_objset_rele(os, FTAG); 1744 return (error); 1745 } 1746 1747 static int 1748 nvl_add_zplprop(objset_t *os, nvlist_t *props, zfs_prop_t prop) 1749 { 1750 uint64_t value; 1751 int error; 1752 1753 /* 1754 * zfs_get_zplprop() will either find a value or give us 1755 * the default value (if there is one). 1756 */ 1757 if ((error = zfs_get_zplprop(os, prop, &value)) != 0) 1758 return (error); 1759 VERIFY(nvlist_add_uint64(props, zfs_prop_to_name(prop), value) == 0); 1760 return (0); 1761 } 1762 1763 /* 1764 * inputs: 1765 * zc_name name of filesystem 1766 * zc_nvlist_dst_size size of buffer for zpl property nvlist 1767 * 1768 * outputs: 1769 * zc_nvlist_dst zpl property nvlist 1770 * zc_nvlist_dst_size size of zpl property nvlist 1771 */ 1772 static int 1773 zfs_ioc_objset_zplprops(zfs_cmd_t *zc) 1774 { 1775 objset_t *os; 1776 int err; 1777 1778 /* XXX reading without owning */ 1779 if (err = dmu_objset_hold(zc->zc_name, FTAG, &os)) 1780 return (err); 1781 1782 dmu_objset_fast_stat(os, &zc->zc_objset_stats); 1783 1784 /* 1785 * NB: nvl_add_zplprop() will read the objset contents, 1786 * which we aren't supposed to do with a DS_MODE_USER 1787 * hold, because it could be inconsistent. 1788 */ 1789 if (zc->zc_nvlist_dst != NULL && 1790 !zc->zc_objset_stats.dds_inconsistent && 1791 dmu_objset_type(os) == DMU_OST_ZFS) { 1792 nvlist_t *nv; 1793 1794 VERIFY(nvlist_alloc(&nv, NV_UNIQUE_NAME, KM_SLEEP) == 0); 1795 if ((err = nvl_add_zplprop(os, nv, ZFS_PROP_VERSION)) == 0 && 1796 (err = nvl_add_zplprop(os, nv, ZFS_PROP_NORMALIZE)) == 0 && 1797 (err = nvl_add_zplprop(os, nv, ZFS_PROP_UTF8ONLY)) == 0 && 1798 (err = nvl_add_zplprop(os, nv, ZFS_PROP_CASE)) == 0) 1799 err = put_nvlist(zc, nv); 1800 nvlist_free(nv); 1801 } else { 1802 err = ENOENT; 1803 } 1804 dmu_objset_rele(os, FTAG); 1805 return (err); 1806 } 1807 1808 static boolean_t 1809 dataset_name_hidden(const char *name) 1810 { 1811 /* 1812 * Skip over datasets that are not visible in this zone, 1813 * internal datasets (which have a $ in their name), and 1814 * temporary datasets (which have a % in their name). 1815 */ 1816 if (strchr(name, '$') != NULL) 1817 return (B_TRUE); 1818 if (strchr(name, '%') != NULL) 1819 return (B_TRUE); 1820 if (!INGLOBALZONE(curproc) && !zone_dataset_visible(name, NULL)) 1821 return (B_TRUE); 1822 return (B_FALSE); 1823 } 1824 1825 /* 1826 * inputs: 1827 * zc_name name of filesystem 1828 * zc_cookie zap cursor 1829 * zc_nvlist_dst_size size of buffer for property nvlist 1830 * 1831 * outputs: 1832 * zc_name name of next filesystem 1833 * zc_cookie zap cursor 1834 * zc_objset_stats stats 1835 * zc_nvlist_dst property nvlist 1836 * zc_nvlist_dst_size size of property nvlist 1837 */ 1838 static int 1839 zfs_ioc_dataset_list_next(zfs_cmd_t *zc) 1840 { 1841 objset_t *os; 1842 int error; 1843 char *p; 1844 size_t orig_len = strlen(zc->zc_name); 1845 1846 top: 1847 if (error = dmu_objset_hold(zc->zc_name, FTAG, &os)) { 1848 if (error == ENOENT) 1849 error = ESRCH; 1850 return (error); 1851 } 1852 1853 p = strrchr(zc->zc_name, '/'); 1854 if (p == NULL || p[1] != '\0') 1855 (void) strlcat(zc->zc_name, "/", sizeof (zc->zc_name)); 1856 p = zc->zc_name + strlen(zc->zc_name); 1857 1858 /* 1859 * Pre-fetch the datasets. dmu_objset_prefetch() always returns 0 1860 * but is not declared void because its called by dmu_objset_find(). 1861 */ 1862 if (zc->zc_cookie == 0) { 1863 uint64_t cookie = 0; 1864 int len = sizeof (zc->zc_name) - (p - zc->zc_name); 1865 1866 while (dmu_dir_list_next(os, len, p, NULL, &cookie) == 0) 1867 (void) dmu_objset_prefetch(p, NULL); 1868 } 1869 1870 do { 1871 error = dmu_dir_list_next(os, 1872 sizeof (zc->zc_name) - (p - zc->zc_name), p, 1873 NULL, &zc->zc_cookie); 1874 if (error == ENOENT) 1875 error = ESRCH; 1876 } while (error == 0 && dataset_name_hidden(zc->zc_name) && 1877 !(zc->zc_iflags & FKIOCTL)); 1878 dmu_objset_rele(os, FTAG); 1879 1880 /* 1881 * If it's an internal dataset (ie. with a '$' in its name), 1882 * don't try to get stats for it, otherwise we'll return ENOENT. 1883 */ 1884 if (error == 0 && strchr(zc->zc_name, '$') == NULL) { 1885 error = zfs_ioc_objset_stats(zc); /* fill in the stats */ 1886 if (error == ENOENT) { 1887 /* We lost a race with destroy, get the next one. */ 1888 zc->zc_name[orig_len] = '\0'; 1889 goto top; 1890 } 1891 } 1892 return (error); 1893 } 1894 1895 /* 1896 * inputs: 1897 * zc_name name of filesystem 1898 * zc_cookie zap cursor 1899 * zc_nvlist_dst_size size of buffer for property nvlist 1900 * 1901 * outputs: 1902 * zc_name name of next snapshot 1903 * zc_objset_stats stats 1904 * zc_nvlist_dst property nvlist 1905 * zc_nvlist_dst_size size of property nvlist 1906 */ 1907 static int 1908 zfs_ioc_snapshot_list_next(zfs_cmd_t *zc) 1909 { 1910 objset_t *os; 1911 int error; 1912 1913 top: 1914 if (zc->zc_cookie == 0) 1915 (void) dmu_objset_find(zc->zc_name, dmu_objset_prefetch, 1916 NULL, DS_FIND_SNAPSHOTS); 1917 1918 error = dmu_objset_hold(zc->zc_name, FTAG, &os); 1919 if (error) 1920 return (error == ENOENT ? ESRCH : error); 1921 1922 /* 1923 * A dataset name of maximum length cannot have any snapshots, 1924 * so exit immediately. 1925 */ 1926 if (strlcat(zc->zc_name, "@", sizeof (zc->zc_name)) >= MAXNAMELEN) { 1927 dmu_objset_rele(os, FTAG); 1928 return (ESRCH); 1929 } 1930 1931 error = dmu_snapshot_list_next(os, 1932 sizeof (zc->zc_name) - strlen(zc->zc_name), 1933 zc->zc_name + strlen(zc->zc_name), &zc->zc_obj, &zc->zc_cookie, 1934 NULL); 1935 1936 if (error == 0) { 1937 dsl_dataset_t *ds; 1938 dsl_pool_t *dp = os->os_dsl_dataset->ds_dir->dd_pool; 1939 1940 /* 1941 * Since we probably don't have a hold on this snapshot, 1942 * it's possible that the objsetid could have been destroyed 1943 * and reused for a new objset. It's OK if this happens during 1944 * a zfs send operation, since the new createtxg will be 1945 * beyond the range we're interested in. 1946 */ 1947 rw_enter(&dp->dp_config_rwlock, RW_READER); 1948 error = dsl_dataset_hold_obj(dp, zc->zc_obj, FTAG, &ds); 1949 rw_exit(&dp->dp_config_rwlock); 1950 if (error) { 1951 if (error == ENOENT) { 1952 /* Racing with destroy, get the next one. */ 1953 *strchr(zc->zc_name, '@') = '\0'; 1954 dmu_objset_rele(os, FTAG); 1955 goto top; 1956 } 1957 } else { 1958 objset_t *ossnap; 1959 1960 error = dmu_objset_from_ds(ds, &ossnap); 1961 if (error == 0) 1962 error = zfs_ioc_objset_stats_impl(zc, ossnap); 1963 dsl_dataset_rele(ds, FTAG); 1964 } 1965 } else if (error == ENOENT) { 1966 error = ESRCH; 1967 } 1968 1969 dmu_objset_rele(os, FTAG); 1970 /* if we failed, undo the @ that we tacked on to zc_name */ 1971 if (error) 1972 *strchr(zc->zc_name, '@') = '\0'; 1973 return (error); 1974 } 1975 1976 static int 1977 zfs_prop_set_userquota(const char *dsname, nvpair_t *pair) 1978 { 1979 const char *propname = nvpair_name(pair); 1980 uint64_t *valary; 1981 unsigned int vallen; 1982 const char *domain; 1983 char *dash; 1984 zfs_userquota_prop_t type; 1985 uint64_t rid; 1986 uint64_t quota; 1987 zfsvfs_t *zfsvfs; 1988 int err; 1989 1990 if (nvpair_type(pair) == DATA_TYPE_NVLIST) { 1991 nvlist_t *attrs; 1992 VERIFY(nvpair_value_nvlist(pair, &attrs) == 0); 1993 if (nvlist_lookup_nvpair(attrs, ZPROP_VALUE, 1994 &pair) != 0) 1995 return (EINVAL); 1996 } 1997 1998 /* 1999 * A correctly constructed propname is encoded as 2000 * userquota@<rid>-<domain>. 2001 */ 2002 if ((dash = strchr(propname, '-')) == NULL || 2003 nvpair_value_uint64_array(pair, &valary, &vallen) != 0 || 2004 vallen != 3) 2005 return (EINVAL); 2006 2007 domain = dash + 1; 2008 type = valary[0]; 2009 rid = valary[1]; 2010 quota = valary[2]; 2011 2012 err = zfsvfs_hold(dsname, FTAG, &zfsvfs, B_FALSE); 2013 if (err == 0) { 2014 err = zfs_set_userquota(zfsvfs, type, domain, rid, quota); 2015 zfsvfs_rele(zfsvfs, FTAG); 2016 } 2017 2018 return (err); 2019 } 2020 2021 /* 2022 * If the named property is one that has a special function to set its value, 2023 * return 0 on success and a positive error code on failure; otherwise if it is 2024 * not one of the special properties handled by this function, return -1. 2025 * 2026 * XXX: It would be better for callers of the property interface if we handled 2027 * these special cases in dsl_prop.c (in the dsl layer). 2028 */ 2029 static int 2030 zfs_prop_set_special(const char *dsname, zprop_source_t source, 2031 nvpair_t *pair) 2032 { 2033 const char *propname = nvpair_name(pair); 2034 zfs_prop_t prop = zfs_name_to_prop(propname); 2035 uint64_t intval; 2036 int err; 2037 2038 if (prop == ZPROP_INVAL) { 2039 if (zfs_prop_userquota(propname)) 2040 return (zfs_prop_set_userquota(dsname, pair)); 2041 return (-1); 2042 } 2043 2044 if (nvpair_type(pair) == DATA_TYPE_NVLIST) { 2045 nvlist_t *attrs; 2046 VERIFY(nvpair_value_nvlist(pair, &attrs) == 0); 2047 VERIFY(nvlist_lookup_nvpair(attrs, ZPROP_VALUE, 2048 &pair) == 0); 2049 } 2050 2051 if (zfs_prop_get_type(prop) == PROP_TYPE_STRING) 2052 return (-1); 2053 2054 VERIFY(0 == nvpair_value_uint64(pair, &intval)); 2055 2056 switch (prop) { 2057 case ZFS_PROP_QUOTA: 2058 err = dsl_dir_set_quota(dsname, source, intval); 2059 break; 2060 case ZFS_PROP_REFQUOTA: 2061 err = dsl_dataset_set_quota(dsname, source, intval); 2062 break; 2063 case ZFS_PROP_RESERVATION: 2064 err = dsl_dir_set_reservation(dsname, source, intval); 2065 break; 2066 case ZFS_PROP_REFRESERVATION: 2067 err = dsl_dataset_set_reservation(dsname, source, intval); 2068 break; 2069 case ZFS_PROP_VOLSIZE: 2070 err = zvol_set_volsize(dsname, ddi_driver_major(zfs_dip), 2071 intval); 2072 break; 2073 case ZFS_PROP_VERSION: 2074 { 2075 zfsvfs_t *zfsvfs; 2076 2077 if ((err = zfsvfs_hold(dsname, FTAG, &zfsvfs, B_TRUE)) != 0) 2078 break; 2079 2080 err = zfs_set_version(zfsvfs, intval); 2081 zfsvfs_rele(zfsvfs, FTAG); 2082 2083 if (err == 0 && intval >= ZPL_VERSION_USERSPACE) { 2084 zfs_cmd_t *zc; 2085 2086 zc = kmem_zalloc(sizeof (zfs_cmd_t), KM_SLEEP); 2087 (void) strcpy(zc->zc_name, dsname); 2088 (void) zfs_ioc_userspace_upgrade(zc); 2089 kmem_free(zc, sizeof (zfs_cmd_t)); 2090 } 2091 break; 2092 } 2093 2094 default: 2095 err = -1; 2096 } 2097 2098 return (err); 2099 } 2100 2101 /* 2102 * This function is best effort. If it fails to set any of the given properties, 2103 * it continues to set as many as it can and returns the first error 2104 * encountered. If the caller provides a non-NULL errlist, it also gives the 2105 * complete list of names of all the properties it failed to set along with the 2106 * corresponding error numbers. The caller is responsible for freeing the 2107 * returned errlist. 2108 * 2109 * If every property is set successfully, zero is returned and the list pointed 2110 * at by errlist is NULL. 2111 */ 2112 int 2113 zfs_set_prop_nvlist(const char *dsname, zprop_source_t source, nvlist_t *nvl, 2114 nvlist_t **errlist) 2115 { 2116 nvpair_t *pair; 2117 nvpair_t *propval; 2118 int rv = 0; 2119 uint64_t intval; 2120 char *strval; 2121 nvlist_t *genericnvl; 2122 nvlist_t *errors; 2123 nvlist_t *retrynvl; 2124 2125 VERIFY(nvlist_alloc(&genericnvl, NV_UNIQUE_NAME, KM_SLEEP) == 0); 2126 VERIFY(nvlist_alloc(&errors, NV_UNIQUE_NAME, KM_SLEEP) == 0); 2127 VERIFY(nvlist_alloc(&retrynvl, NV_UNIQUE_NAME, KM_SLEEP) == 0); 2128 2129 retry: 2130 pair = NULL; 2131 while ((pair = nvlist_next_nvpair(nvl, pair)) != NULL) { 2132 const char *propname = nvpair_name(pair); 2133 zfs_prop_t prop = zfs_name_to_prop(propname); 2134 int err = 0; 2135 2136 /* decode the property value */ 2137 propval = pair; 2138 if (nvpair_type(pair) == DATA_TYPE_NVLIST) { 2139 nvlist_t *attrs; 2140 VERIFY(nvpair_value_nvlist(pair, &attrs) == 0); 2141 if (nvlist_lookup_nvpair(attrs, ZPROP_VALUE, 2142 &propval) != 0) 2143 err = EINVAL; 2144 } 2145 2146 /* Validate value type */ 2147 if (err == 0 && prop == ZPROP_INVAL) { 2148 if (zfs_prop_user(propname)) { 2149 if (nvpair_type(propval) != DATA_TYPE_STRING) 2150 err = EINVAL; 2151 } else if (zfs_prop_userquota(propname)) { 2152 if (nvpair_type(propval) != 2153 DATA_TYPE_UINT64_ARRAY) 2154 err = EINVAL; 2155 } 2156 } else if (err == 0) { 2157 if (nvpair_type(propval) == DATA_TYPE_STRING) { 2158 if (zfs_prop_get_type(prop) != PROP_TYPE_STRING) 2159 err = EINVAL; 2160 } else if (nvpair_type(propval) == DATA_TYPE_UINT64) { 2161 const char *unused; 2162 2163 VERIFY(nvpair_value_uint64(propval, 2164 &intval) == 0); 2165 2166 switch (zfs_prop_get_type(prop)) { 2167 case PROP_TYPE_NUMBER: 2168 break; 2169 case PROP_TYPE_STRING: 2170 err = EINVAL; 2171 break; 2172 case PROP_TYPE_INDEX: 2173 if (zfs_prop_index_to_string(prop, 2174 intval, &unused) != 0) 2175 err = EINVAL; 2176 break; 2177 default: 2178 cmn_err(CE_PANIC, 2179 "unknown property type"); 2180 } 2181 } else { 2182 err = EINVAL; 2183 } 2184 } 2185 2186 /* Validate permissions */ 2187 if (err == 0) 2188 err = zfs_check_settable(dsname, pair, CRED()); 2189 2190 if (err == 0) { 2191 err = zfs_prop_set_special(dsname, source, pair); 2192 if (err == -1) { 2193 /* 2194 * For better performance we build up a list of 2195 * properties to set in a single transaction. 2196 */ 2197 err = nvlist_add_nvpair(genericnvl, pair); 2198 } else if (err != 0 && nvl != retrynvl) { 2199 /* 2200 * This may be a spurious error caused by 2201 * receiving quota and reservation out of order. 2202 * Try again in a second pass. 2203 */ 2204 err = nvlist_add_nvpair(retrynvl, pair); 2205 } 2206 } 2207 2208 if (err != 0) 2209 VERIFY(nvlist_add_int32(errors, propname, err) == 0); 2210 } 2211 2212 if (nvl != retrynvl && !nvlist_empty(retrynvl)) { 2213 nvl = retrynvl; 2214 goto retry; 2215 } 2216 2217 if (!nvlist_empty(genericnvl) && 2218 dsl_props_set(dsname, source, genericnvl) != 0) { 2219 /* 2220 * If this fails, we still want to set as many properties as we 2221 * can, so try setting them individually. 2222 */ 2223 pair = NULL; 2224 while ((pair = nvlist_next_nvpair(genericnvl, pair)) != NULL) { 2225 const char *propname = nvpair_name(pair); 2226 int err = 0; 2227 2228 propval = pair; 2229 if (nvpair_type(pair) == DATA_TYPE_NVLIST) { 2230 nvlist_t *attrs; 2231 VERIFY(nvpair_value_nvlist(pair, &attrs) == 0); 2232 VERIFY(nvlist_lookup_nvpair(attrs, ZPROP_VALUE, 2233 &propval) == 0); 2234 } 2235 2236 if (nvpair_type(propval) == DATA_TYPE_STRING) { 2237 VERIFY(nvpair_value_string(propval, 2238 &strval) == 0); 2239 err = dsl_prop_set(dsname, propname, source, 1, 2240 strlen(strval) + 1, strval); 2241 } else { 2242 VERIFY(nvpair_value_uint64(propval, 2243 &intval) == 0); 2244 err = dsl_prop_set(dsname, propname, source, 8, 2245 1, &intval); 2246 } 2247 2248 if (err != 0) { 2249 VERIFY(nvlist_add_int32(errors, propname, 2250 err) == 0); 2251 } 2252 } 2253 } 2254 nvlist_free(genericnvl); 2255 nvlist_free(retrynvl); 2256 2257 if ((pair = nvlist_next_nvpair(errors, NULL)) == NULL) { 2258 nvlist_free(errors); 2259 errors = NULL; 2260 } else { 2261 VERIFY(nvpair_value_int32(pair, &rv) == 0); 2262 } 2263 2264 if (errlist == NULL) 2265 nvlist_free(errors); 2266 else 2267 *errlist = errors; 2268 2269 return (rv); 2270 } 2271 2272 /* 2273 * Check that all the properties are valid user properties. 2274 */ 2275 static int 2276 zfs_check_userprops(char *fsname, nvlist_t *nvl) 2277 { 2278 nvpair_t *pair = NULL; 2279 int error = 0; 2280 2281 while ((pair = nvlist_next_nvpair(nvl, pair)) != NULL) { 2282 const char *propname = nvpair_name(pair); 2283 char *valstr; 2284 2285 if (!zfs_prop_user(propname) || 2286 nvpair_type(pair) != DATA_TYPE_STRING) 2287 return (EINVAL); 2288 2289 if (error = zfs_secpolicy_write_perms(fsname, 2290 ZFS_DELEG_PERM_USERPROP, CRED())) 2291 return (error); 2292 2293 if (strlen(propname) >= ZAP_MAXNAMELEN) 2294 return (ENAMETOOLONG); 2295 2296 VERIFY(nvpair_value_string(pair, &valstr) == 0); 2297 if (strlen(valstr) >= ZAP_MAXVALUELEN) 2298 return (E2BIG); 2299 } 2300 return (0); 2301 } 2302 2303 static void 2304 props_skip(nvlist_t *props, nvlist_t *skipped, nvlist_t **newprops) 2305 { 2306 nvpair_t *pair; 2307 2308 VERIFY(nvlist_alloc(newprops, NV_UNIQUE_NAME, KM_SLEEP) == 0); 2309 2310 pair = NULL; 2311 while ((pair = nvlist_next_nvpair(props, pair)) != NULL) { 2312 if (nvlist_exists(skipped, nvpair_name(pair))) 2313 continue; 2314 2315 VERIFY(nvlist_add_nvpair(*newprops, pair) == 0); 2316 } 2317 } 2318 2319 static int 2320 clear_received_props(objset_t *os, const char *fs, nvlist_t *props, 2321 nvlist_t *skipped) 2322 { 2323 int err = 0; 2324 nvlist_t *cleared_props = NULL; 2325 props_skip(props, skipped, &cleared_props); 2326 if (!nvlist_empty(cleared_props)) { 2327 /* 2328 * Acts on local properties until the dataset has received 2329 * properties at least once on or after SPA_VERSION_RECVD_PROPS. 2330 */ 2331 zprop_source_t flags = (ZPROP_SRC_NONE | 2332 (dsl_prop_get_hasrecvd(os) ? ZPROP_SRC_RECEIVED : 0)); 2333 err = zfs_set_prop_nvlist(fs, flags, cleared_props, NULL); 2334 } 2335 nvlist_free(cleared_props); 2336 return (err); 2337 } 2338 2339 /* 2340 * inputs: 2341 * zc_name name of filesystem 2342 * zc_value name of property to set 2343 * zc_nvlist_src{_size} nvlist of properties to apply 2344 * zc_cookie received properties flag 2345 * 2346 * outputs: 2347 * zc_nvlist_dst{_size} error for each unapplied received property 2348 */ 2349 static int 2350 zfs_ioc_set_prop(zfs_cmd_t *zc) 2351 { 2352 nvlist_t *nvl; 2353 boolean_t received = zc->zc_cookie; 2354 zprop_source_t source = (received ? ZPROP_SRC_RECEIVED : 2355 ZPROP_SRC_LOCAL); 2356 nvlist_t *errors = NULL; 2357 int error; 2358 2359 if ((error = get_nvlist(zc->zc_nvlist_src, zc->zc_nvlist_src_size, 2360 zc->zc_iflags, &nvl)) != 0) 2361 return (error); 2362 2363 if (received) { 2364 nvlist_t *origprops; 2365 objset_t *os; 2366 2367 if (dmu_objset_hold(zc->zc_name, FTAG, &os) == 0) { 2368 if (dsl_prop_get_received(os, &origprops) == 0) { 2369 (void) clear_received_props(os, 2370 zc->zc_name, origprops, nvl); 2371 nvlist_free(origprops); 2372 } 2373 2374 dsl_prop_set_hasrecvd(os); 2375 dmu_objset_rele(os, FTAG); 2376 } 2377 } 2378 2379 error = zfs_set_prop_nvlist(zc->zc_name, source, nvl, &errors); 2380 2381 if (zc->zc_nvlist_dst != NULL && errors != NULL) { 2382 (void) put_nvlist(zc, errors); 2383 } 2384 2385 nvlist_free(errors); 2386 nvlist_free(nvl); 2387 return (error); 2388 } 2389 2390 /* 2391 * inputs: 2392 * zc_name name of filesystem 2393 * zc_value name of property to inherit 2394 * zc_cookie revert to received value if TRUE 2395 * 2396 * outputs: none 2397 */ 2398 static int 2399 zfs_ioc_inherit_prop(zfs_cmd_t *zc) 2400 { 2401 const char *propname = zc->zc_value; 2402 zfs_prop_t prop = zfs_name_to_prop(propname); 2403 boolean_t received = zc->zc_cookie; 2404 zprop_source_t source = (received 2405 ? ZPROP_SRC_NONE /* revert to received value, if any */ 2406 : ZPROP_SRC_INHERITED); /* explicitly inherit */ 2407 2408 if (received) { 2409 nvlist_t *dummy; 2410 nvpair_t *pair; 2411 zprop_type_t type; 2412 int err; 2413 2414 /* 2415 * zfs_prop_set_special() expects properties in the form of an 2416 * nvpair with type info. 2417 */ 2418 if (prop == ZPROP_INVAL) { 2419 if (!zfs_prop_user(propname)) 2420 return (EINVAL); 2421 2422 type = PROP_TYPE_STRING; 2423 } else if (prop == ZFS_PROP_VOLSIZE || 2424 prop == ZFS_PROP_VERSION) { 2425 return (EINVAL); 2426 } else { 2427 type = zfs_prop_get_type(prop); 2428 } 2429 2430 VERIFY(nvlist_alloc(&dummy, NV_UNIQUE_NAME, KM_SLEEP) == 0); 2431 2432 switch (type) { 2433 case PROP_TYPE_STRING: 2434 VERIFY(0 == nvlist_add_string(dummy, propname, "")); 2435 break; 2436 case PROP_TYPE_NUMBER: 2437 case PROP_TYPE_INDEX: 2438 VERIFY(0 == nvlist_add_uint64(dummy, propname, 0)); 2439 break; 2440 default: 2441 nvlist_free(dummy); 2442 return (EINVAL); 2443 } 2444 2445 pair = nvlist_next_nvpair(dummy, NULL); 2446 err = zfs_prop_set_special(zc->zc_name, source, pair); 2447 nvlist_free(dummy); 2448 if (err != -1) 2449 return (err); /* special property already handled */ 2450 } else { 2451 /* 2452 * Only check this in the non-received case. We want to allow 2453 * 'inherit -S' to revert non-inheritable properties like quota 2454 * and reservation to the received or default values even though 2455 * they are not considered inheritable. 2456 */ 2457 if (prop != ZPROP_INVAL && !zfs_prop_inheritable(prop)) 2458 return (EINVAL); 2459 } 2460 2461 /* the property name has been validated by zfs_secpolicy_inherit() */ 2462 return (dsl_prop_set(zc->zc_name, zc->zc_value, source, 0, 0, NULL)); 2463 } 2464 2465 static int 2466 zfs_ioc_pool_set_props(zfs_cmd_t *zc) 2467 { 2468 nvlist_t *props; 2469 spa_t *spa; 2470 int error; 2471 nvpair_t *pair; 2472 2473 if (error = get_nvlist(zc->zc_nvlist_src, zc->zc_nvlist_src_size, 2474 zc->zc_iflags, &props)) 2475 return (error); 2476 2477 /* 2478 * If the only property is the configfile, then just do a spa_lookup() 2479 * to handle the faulted case. 2480 */ 2481 pair = nvlist_next_nvpair(props, NULL); 2482 if (pair != NULL && strcmp(nvpair_name(pair), 2483 zpool_prop_to_name(ZPOOL_PROP_CACHEFILE)) == 0 && 2484 nvlist_next_nvpair(props, pair) == NULL) { 2485 mutex_enter(&spa_namespace_lock); 2486 if ((spa = spa_lookup(zc->zc_name)) != NULL) { 2487 spa_configfile_set(spa, props, B_FALSE); 2488 spa_config_sync(spa, B_FALSE, B_TRUE); 2489 } 2490 mutex_exit(&spa_namespace_lock); 2491 if (spa != NULL) { 2492 nvlist_free(props); 2493 return (0); 2494 } 2495 } 2496 2497 if ((error = spa_open(zc->zc_name, &spa, FTAG)) != 0) { 2498 nvlist_free(props); 2499 return (error); 2500 } 2501 2502 error = spa_prop_set(spa, props); 2503 2504 nvlist_free(props); 2505 spa_close(spa, FTAG); 2506 2507 return (error); 2508 } 2509 2510 static int 2511 zfs_ioc_pool_get_props(zfs_cmd_t *zc) 2512 { 2513 spa_t *spa; 2514 int error; 2515 nvlist_t *nvp = NULL; 2516 2517 if ((error = spa_open(zc->zc_name, &spa, FTAG)) != 0) { 2518 /* 2519 * If the pool is faulted, there may be properties we can still 2520 * get (such as altroot and cachefile), so attempt to get them 2521 * anyway. 2522 */ 2523 mutex_enter(&spa_namespace_lock); 2524 if ((spa = spa_lookup(zc->zc_name)) != NULL) 2525 error = spa_prop_get(spa, &nvp); 2526 mutex_exit(&spa_namespace_lock); 2527 } else { 2528 error = spa_prop_get(spa, &nvp); 2529 spa_close(spa, FTAG); 2530 } 2531 2532 if (error == 0 && zc->zc_nvlist_dst != NULL) 2533 error = put_nvlist(zc, nvp); 2534 else 2535 error = EFAULT; 2536 2537 nvlist_free(nvp); 2538 return (error); 2539 } 2540 2541 /* 2542 * inputs: 2543 * zc_name name of filesystem 2544 * zc_nvlist_src{_size} nvlist of delegated permissions 2545 * zc_perm_action allow/unallow flag 2546 * 2547 * outputs: none 2548 */ 2549 static int 2550 zfs_ioc_set_fsacl(zfs_cmd_t *zc) 2551 { 2552 int error; 2553 nvlist_t *fsaclnv = NULL; 2554 2555 if ((error = get_nvlist(zc->zc_nvlist_src, zc->zc_nvlist_src_size, 2556 zc->zc_iflags, &fsaclnv)) != 0) 2557 return (error); 2558 2559 /* 2560 * Verify nvlist is constructed correctly 2561 */ 2562 if ((error = zfs_deleg_verify_nvlist(fsaclnv)) != 0) { 2563 nvlist_free(fsaclnv); 2564 return (EINVAL); 2565 } 2566 2567 /* 2568 * If we don't have PRIV_SYS_MOUNT, then validate 2569 * that user is allowed to hand out each permission in 2570 * the nvlist(s) 2571 */ 2572 2573 error = secpolicy_zfs(CRED()); 2574 if (error) { 2575 if (zc->zc_perm_action == B_FALSE) { 2576 error = dsl_deleg_can_allow(zc->zc_name, 2577 fsaclnv, CRED()); 2578 } else { 2579 error = dsl_deleg_can_unallow(zc->zc_name, 2580 fsaclnv, CRED()); 2581 } 2582 } 2583 2584 if (error == 0) 2585 error = dsl_deleg_set(zc->zc_name, fsaclnv, zc->zc_perm_action); 2586 2587 nvlist_free(fsaclnv); 2588 return (error); 2589 } 2590 2591 /* 2592 * inputs: 2593 * zc_name name of filesystem 2594 * 2595 * outputs: 2596 * zc_nvlist_src{_size} nvlist of delegated permissions 2597 */ 2598 static int 2599 zfs_ioc_get_fsacl(zfs_cmd_t *zc) 2600 { 2601 nvlist_t *nvp; 2602 int error; 2603 2604 if ((error = dsl_deleg_get(zc->zc_name, &nvp)) == 0) { 2605 error = put_nvlist(zc, nvp); 2606 nvlist_free(nvp); 2607 } 2608 2609 return (error); 2610 } 2611 2612 /* 2613 * Search the vfs list for a specified resource. Returns a pointer to it 2614 * or NULL if no suitable entry is found. The caller of this routine 2615 * is responsible for releasing the returned vfs pointer. 2616 */ 2617 static vfs_t * 2618 zfs_get_vfs(const char *resource) 2619 { 2620 struct vfs *vfsp; 2621 struct vfs *vfs_found = NULL; 2622 2623 vfs_list_read_lock(); 2624 vfsp = rootvfs; 2625 do { 2626 if (strcmp(refstr_value(vfsp->vfs_resource), resource) == 0) { 2627 VFS_HOLD(vfsp); 2628 vfs_found = vfsp; 2629 break; 2630 } 2631 vfsp = vfsp->vfs_next; 2632 } while (vfsp != rootvfs); 2633 vfs_list_unlock(); 2634 return (vfs_found); 2635 } 2636 2637 /* ARGSUSED */ 2638 static void 2639 zfs_create_cb(objset_t *os, void *arg, cred_t *cr, dmu_tx_t *tx) 2640 { 2641 zfs_creat_t *zct = arg; 2642 2643 zfs_create_fs(os, cr, zct->zct_zplprops, tx); 2644 } 2645 2646 #define ZFS_PROP_UNDEFINED ((uint64_t)-1) 2647 2648 /* 2649 * inputs: 2650 * createprops list of properties requested by creator 2651 * default_zplver zpl version to use if unspecified in createprops 2652 * fuids_ok fuids allowed in this version of the spa? 2653 * os parent objset pointer (NULL if root fs) 2654 * 2655 * outputs: 2656 * zplprops values for the zplprops we attach to the master node object 2657 * is_ci true if requested file system will be purely case-insensitive 2658 * 2659 * Determine the settings for utf8only, normalization and 2660 * casesensitivity. Specific values may have been requested by the 2661 * creator and/or we can inherit values from the parent dataset. If 2662 * the file system is of too early a vintage, a creator can not 2663 * request settings for these properties, even if the requested 2664 * setting is the default value. We don't actually want to create dsl 2665 * properties for these, so remove them from the source nvlist after 2666 * processing. 2667 */ 2668 static int 2669 zfs_fill_zplprops_impl(objset_t *os, uint64_t zplver, 2670 boolean_t fuids_ok, boolean_t sa_ok, nvlist_t *createprops, 2671 nvlist_t *zplprops, boolean_t *is_ci) 2672 { 2673 uint64_t sense = ZFS_PROP_UNDEFINED; 2674 uint64_t norm = ZFS_PROP_UNDEFINED; 2675 uint64_t u8 = ZFS_PROP_UNDEFINED; 2676 2677 ASSERT(zplprops != NULL); 2678 2679 /* 2680 * Pull out creator prop choices, if any. 2681 */ 2682 if (createprops) { 2683 (void) nvlist_lookup_uint64(createprops, 2684 zfs_prop_to_name(ZFS_PROP_VERSION), &zplver); 2685 (void) nvlist_lookup_uint64(createprops, 2686 zfs_prop_to_name(ZFS_PROP_NORMALIZE), &norm); 2687 (void) nvlist_remove_all(createprops, 2688 zfs_prop_to_name(ZFS_PROP_NORMALIZE)); 2689 (void) nvlist_lookup_uint64(createprops, 2690 zfs_prop_to_name(ZFS_PROP_UTF8ONLY), &u8); 2691 (void) nvlist_remove_all(createprops, 2692 zfs_prop_to_name(ZFS_PROP_UTF8ONLY)); 2693 (void) nvlist_lookup_uint64(createprops, 2694 zfs_prop_to_name(ZFS_PROP_CASE), &sense); 2695 (void) nvlist_remove_all(createprops, 2696 zfs_prop_to_name(ZFS_PROP_CASE)); 2697 } 2698 2699 /* 2700 * If the zpl version requested is whacky or the file system 2701 * or pool is version is too "young" to support normalization 2702 * and the creator tried to set a value for one of the props, 2703 * error out. 2704 */ 2705 if ((zplver < ZPL_VERSION_INITIAL || zplver > ZPL_VERSION) || 2706 (zplver >= ZPL_VERSION_FUID && !fuids_ok) || 2707 (zplver >= ZPL_VERSION_SA && !sa_ok) || 2708 (zplver < ZPL_VERSION_NORMALIZATION && 2709 (norm != ZFS_PROP_UNDEFINED || u8 != ZFS_PROP_UNDEFINED || 2710 sense != ZFS_PROP_UNDEFINED))) 2711 return (ENOTSUP); 2712 2713 /* 2714 * Put the version in the zplprops 2715 */ 2716 VERIFY(nvlist_add_uint64(zplprops, 2717 zfs_prop_to_name(ZFS_PROP_VERSION), zplver) == 0); 2718 2719 if (norm == ZFS_PROP_UNDEFINED) 2720 VERIFY(zfs_get_zplprop(os, ZFS_PROP_NORMALIZE, &norm) == 0); 2721 VERIFY(nvlist_add_uint64(zplprops, 2722 zfs_prop_to_name(ZFS_PROP_NORMALIZE), norm) == 0); 2723 2724 /* 2725 * If we're normalizing, names must always be valid UTF-8 strings. 2726 */ 2727 if (norm) 2728 u8 = 1; 2729 if (u8 == ZFS_PROP_UNDEFINED) 2730 VERIFY(zfs_get_zplprop(os, ZFS_PROP_UTF8ONLY, &u8) == 0); 2731 VERIFY(nvlist_add_uint64(zplprops, 2732 zfs_prop_to_name(ZFS_PROP_UTF8ONLY), u8) == 0); 2733 2734 if (sense == ZFS_PROP_UNDEFINED) 2735 VERIFY(zfs_get_zplprop(os, ZFS_PROP_CASE, &sense) == 0); 2736 VERIFY(nvlist_add_uint64(zplprops, 2737 zfs_prop_to_name(ZFS_PROP_CASE), sense) == 0); 2738 2739 if (is_ci) 2740 *is_ci = (sense == ZFS_CASE_INSENSITIVE); 2741 2742 return (0); 2743 } 2744 2745 static int 2746 zfs_fill_zplprops(const char *dataset, nvlist_t *createprops, 2747 nvlist_t *zplprops, boolean_t *is_ci) 2748 { 2749 boolean_t fuids_ok, sa_ok; 2750 uint64_t zplver = ZPL_VERSION; 2751 objset_t *os = NULL; 2752 char parentname[MAXNAMELEN]; 2753 char *cp; 2754 spa_t *spa; 2755 uint64_t spa_vers; 2756 int error; 2757 2758 (void) strlcpy(parentname, dataset, sizeof (parentname)); 2759 cp = strrchr(parentname, '/'); 2760 ASSERT(cp != NULL); 2761 cp[0] = '\0'; 2762 2763 if ((error = spa_open(dataset, &spa, FTAG)) != 0) 2764 return (error); 2765 2766 spa_vers = spa_version(spa); 2767 spa_close(spa, FTAG); 2768 2769 zplver = zfs_zpl_version_map(spa_vers); 2770 fuids_ok = (zplver >= ZPL_VERSION_FUID); 2771 sa_ok = (zplver >= ZPL_VERSION_SA); 2772 2773 /* 2774 * Open parent object set so we can inherit zplprop values. 2775 */ 2776 if ((error = dmu_objset_hold(parentname, FTAG, &os)) != 0) 2777 return (error); 2778 2779 error = zfs_fill_zplprops_impl(os, zplver, fuids_ok, sa_ok, createprops, 2780 zplprops, is_ci); 2781 dmu_objset_rele(os, FTAG); 2782 return (error); 2783 } 2784 2785 static int 2786 zfs_fill_zplprops_root(uint64_t spa_vers, nvlist_t *createprops, 2787 nvlist_t *zplprops, boolean_t *is_ci) 2788 { 2789 boolean_t fuids_ok; 2790 boolean_t sa_ok; 2791 uint64_t zplver = ZPL_VERSION; 2792 int error; 2793 2794 zplver = zfs_zpl_version_map(spa_vers); 2795 fuids_ok = (zplver >= ZPL_VERSION_FUID); 2796 sa_ok = (zplver >= ZPL_VERSION_SA); 2797 2798 error = zfs_fill_zplprops_impl(NULL, zplver, fuids_ok, sa_ok, 2799 createprops, zplprops, is_ci); 2800 return (error); 2801 } 2802 2803 /* 2804 * inputs: 2805 * zc_objset_type type of objset to create (fs vs zvol) 2806 * zc_name name of new objset 2807 * zc_value name of snapshot to clone from (may be empty) 2808 * zc_nvlist_src{_size} nvlist of properties to apply 2809 * 2810 * outputs: none 2811 */ 2812 static int 2813 zfs_ioc_create(zfs_cmd_t *zc) 2814 { 2815 objset_t *clone; 2816 int error = 0; 2817 zfs_creat_t zct; 2818 nvlist_t *nvprops = NULL; 2819 void (*cbfunc)(objset_t *os, void *arg, cred_t *cr, dmu_tx_t *tx); 2820 dmu_objset_type_t type = zc->zc_objset_type; 2821 2822 switch (type) { 2823 2824 case DMU_OST_ZFS: 2825 cbfunc = zfs_create_cb; 2826 break; 2827 2828 case DMU_OST_ZVOL: 2829 cbfunc = zvol_create_cb; 2830 break; 2831 2832 default: 2833 cbfunc = NULL; 2834 break; 2835 } 2836 if (strchr(zc->zc_name, '@') || 2837 strchr(zc->zc_name, '%')) 2838 return (EINVAL); 2839 2840 if (zc->zc_nvlist_src != NULL && 2841 (error = get_nvlist(zc->zc_nvlist_src, zc->zc_nvlist_src_size, 2842 zc->zc_iflags, &nvprops)) != 0) 2843 return (error); 2844 2845 zct.zct_zplprops = NULL; 2846 zct.zct_props = nvprops; 2847 2848 if (zc->zc_value[0] != '\0') { 2849 /* 2850 * We're creating a clone of an existing snapshot. 2851 */ 2852 zc->zc_value[sizeof (zc->zc_value) - 1] = '\0'; 2853 if (dataset_namecheck(zc->zc_value, NULL, NULL) != 0) { 2854 nvlist_free(nvprops); 2855 return (EINVAL); 2856 } 2857 2858 error = dmu_objset_hold(zc->zc_value, FTAG, &clone); 2859 if (error) { 2860 nvlist_free(nvprops); 2861 return (error); 2862 } 2863 2864 error = dmu_objset_clone(zc->zc_name, dmu_objset_ds(clone), 0); 2865 dmu_objset_rele(clone, FTAG); 2866 if (error) { 2867 nvlist_free(nvprops); 2868 return (error); 2869 } 2870 } else { 2871 boolean_t is_insensitive = B_FALSE; 2872 2873 if (cbfunc == NULL) { 2874 nvlist_free(nvprops); 2875 return (EINVAL); 2876 } 2877 2878 if (type == DMU_OST_ZVOL) { 2879 uint64_t volsize, volblocksize; 2880 2881 if (nvprops == NULL || 2882 nvlist_lookup_uint64(nvprops, 2883 zfs_prop_to_name(ZFS_PROP_VOLSIZE), 2884 &volsize) != 0) { 2885 nvlist_free(nvprops); 2886 return (EINVAL); 2887 } 2888 2889 if ((error = nvlist_lookup_uint64(nvprops, 2890 zfs_prop_to_name(ZFS_PROP_VOLBLOCKSIZE), 2891 &volblocksize)) != 0 && error != ENOENT) { 2892 nvlist_free(nvprops); 2893 return (EINVAL); 2894 } 2895 2896 if (error != 0) 2897 volblocksize = zfs_prop_default_numeric( 2898 ZFS_PROP_VOLBLOCKSIZE); 2899 2900 if ((error = zvol_check_volblocksize( 2901 volblocksize)) != 0 || 2902 (error = zvol_check_volsize(volsize, 2903 volblocksize)) != 0) { 2904 nvlist_free(nvprops); 2905 return (error); 2906 } 2907 } else if (type == DMU_OST_ZFS) { 2908 int error; 2909 2910 /* 2911 * We have to have normalization and 2912 * case-folding flags correct when we do the 2913 * file system creation, so go figure them out 2914 * now. 2915 */ 2916 VERIFY(nvlist_alloc(&zct.zct_zplprops, 2917 NV_UNIQUE_NAME, KM_SLEEP) == 0); 2918 error = zfs_fill_zplprops(zc->zc_name, nvprops, 2919 zct.zct_zplprops, &is_insensitive); 2920 if (error != 0) { 2921 nvlist_free(nvprops); 2922 nvlist_free(zct.zct_zplprops); 2923 return (error); 2924 } 2925 } 2926 error = dmu_objset_create(zc->zc_name, type, 2927 is_insensitive ? DS_FLAG_CI_DATASET : 0, cbfunc, &zct); 2928 nvlist_free(zct.zct_zplprops); 2929 } 2930 2931 /* 2932 * It would be nice to do this atomically. 2933 */ 2934 if (error == 0) { 2935 error = zfs_set_prop_nvlist(zc->zc_name, ZPROP_SRC_LOCAL, 2936 nvprops, NULL); 2937 if (error != 0) 2938 (void) dmu_objset_destroy(zc->zc_name, B_FALSE); 2939 } 2940 nvlist_free(nvprops); 2941 return (error); 2942 } 2943 2944 /* 2945 * inputs: 2946 * zc_name name of filesystem 2947 * zc_value short name of snapshot 2948 * zc_cookie recursive flag 2949 * zc_nvlist_src[_size] property list 2950 * 2951 * outputs: 2952 * zc_value short snapname (i.e. part after the '@') 2953 */ 2954 static int 2955 zfs_ioc_snapshot(zfs_cmd_t *zc) 2956 { 2957 nvlist_t *nvprops = NULL; 2958 int error; 2959 boolean_t recursive = zc->zc_cookie; 2960 2961 if (snapshot_namecheck(zc->zc_value, NULL, NULL) != 0) 2962 return (EINVAL); 2963 2964 if (zc->zc_nvlist_src != NULL && 2965 (error = get_nvlist(zc->zc_nvlist_src, zc->zc_nvlist_src_size, 2966 zc->zc_iflags, &nvprops)) != 0) 2967 return (error); 2968 2969 error = zfs_check_userprops(zc->zc_name, nvprops); 2970 if (error) 2971 goto out; 2972 2973 if (!nvlist_empty(nvprops) && 2974 zfs_earlier_version(zc->zc_name, SPA_VERSION_SNAP_PROPS)) { 2975 error = ENOTSUP; 2976 goto out; 2977 } 2978 2979 error = dmu_objset_snapshot(zc->zc_name, zc->zc_value, 2980 nvprops, recursive); 2981 2982 out: 2983 nvlist_free(nvprops); 2984 return (error); 2985 } 2986 2987 int 2988 zfs_unmount_snap(const char *name, void *arg) 2989 { 2990 vfs_t *vfsp = NULL; 2991 2992 if (arg) { 2993 char *snapname = arg; 2994 char *fullname = kmem_asprintf("%s@%s", name, snapname); 2995 vfsp = zfs_get_vfs(fullname); 2996 strfree(fullname); 2997 } else if (strchr(name, '@')) { 2998 vfsp = zfs_get_vfs(name); 2999 } 3000 3001 if (vfsp) { 3002 /* 3003 * Always force the unmount for snapshots. 3004 */ 3005 int flag = MS_FORCE; 3006 int err; 3007 3008 if ((err = vn_vfswlock(vfsp->vfs_vnodecovered)) != 0) { 3009 VFS_RELE(vfsp); 3010 return (err); 3011 } 3012 VFS_RELE(vfsp); 3013 if ((err = dounmount(vfsp, flag, kcred)) != 0) 3014 return (err); 3015 } 3016 return (0); 3017 } 3018 3019 /* 3020 * inputs: 3021 * zc_name name of filesystem 3022 * zc_value short name of snapshot 3023 * zc_defer_destroy mark for deferred destroy 3024 * 3025 * outputs: none 3026 */ 3027 static int 3028 zfs_ioc_destroy_snaps(zfs_cmd_t *zc) 3029 { 3030 int err; 3031 3032 if (snapshot_namecheck(zc->zc_value, NULL, NULL) != 0) 3033 return (EINVAL); 3034 err = dmu_objset_find(zc->zc_name, 3035 zfs_unmount_snap, zc->zc_value, DS_FIND_CHILDREN); 3036 if (err) 3037 return (err); 3038 return (dmu_snapshots_destroy(zc->zc_name, zc->zc_value, 3039 zc->zc_defer_destroy)); 3040 } 3041 3042 /* 3043 * inputs: 3044 * zc_name name of dataset to destroy 3045 * zc_objset_type type of objset 3046 * zc_defer_destroy mark for deferred destroy 3047 * 3048 * outputs: none 3049 */ 3050 static int 3051 zfs_ioc_destroy(zfs_cmd_t *zc) 3052 { 3053 int err; 3054 if (strchr(zc->zc_name, '@') && zc->zc_objset_type == DMU_OST_ZFS) { 3055 err = zfs_unmount_snap(zc->zc_name, NULL); 3056 if (err) 3057 return (err); 3058 } 3059 3060 err = dmu_objset_destroy(zc->zc_name, zc->zc_defer_destroy); 3061 if (zc->zc_objset_type == DMU_OST_ZVOL && err == 0) 3062 (void) zvol_remove_minor(zc->zc_name); 3063 return (err); 3064 } 3065 3066 /* 3067 * inputs: 3068 * zc_name name of dataset to rollback (to most recent snapshot) 3069 * 3070 * outputs: none 3071 */ 3072 static int 3073 zfs_ioc_rollback(zfs_cmd_t *zc) 3074 { 3075 dsl_dataset_t *ds, *clone; 3076 int error; 3077 zfsvfs_t *zfsvfs; 3078 char *clone_name; 3079 3080 error = dsl_dataset_hold(zc->zc_name, FTAG, &ds); 3081 if (error) 3082 return (error); 3083 3084 /* must not be a snapshot */ 3085 if (dsl_dataset_is_snapshot(ds)) { 3086 dsl_dataset_rele(ds, FTAG); 3087 return (EINVAL); 3088 } 3089 3090 /* must have a most recent snapshot */ 3091 if (ds->ds_phys->ds_prev_snap_txg < TXG_INITIAL) { 3092 dsl_dataset_rele(ds, FTAG); 3093 return (EINVAL); 3094 } 3095 3096 /* 3097 * Create clone of most recent snapshot. 3098 */ 3099 clone_name = kmem_asprintf("%s/%%rollback", zc->zc_name); 3100 error = dmu_objset_clone(clone_name, ds->ds_prev, DS_FLAG_INCONSISTENT); 3101 if (error) 3102 goto out; 3103 3104 error = dsl_dataset_own(clone_name, B_TRUE, FTAG, &clone); 3105 if (error) 3106 goto out; 3107 3108 /* 3109 * Do clone swap. 3110 */ 3111 if (getzfsvfs(zc->zc_name, &zfsvfs) == 0) { 3112 error = zfs_suspend_fs(zfsvfs); 3113 if (error == 0) { 3114 int resume_err; 3115 3116 if (dsl_dataset_tryown(ds, B_FALSE, FTAG)) { 3117 error = dsl_dataset_clone_swap(clone, ds, 3118 B_TRUE); 3119 dsl_dataset_disown(ds, FTAG); 3120 ds = NULL; 3121 } else { 3122 error = EBUSY; 3123 } 3124 resume_err = zfs_resume_fs(zfsvfs, zc->zc_name); 3125 error = error ? error : resume_err; 3126 } 3127 VFS_RELE(zfsvfs->z_vfs); 3128 } else { 3129 if (dsl_dataset_tryown(ds, B_FALSE, FTAG)) { 3130 error = dsl_dataset_clone_swap(clone, ds, B_TRUE); 3131 dsl_dataset_disown(ds, FTAG); 3132 ds = NULL; 3133 } else { 3134 error = EBUSY; 3135 } 3136 } 3137 3138 /* 3139 * Destroy clone (which also closes it). 3140 */ 3141 (void) dsl_dataset_destroy(clone, FTAG, B_FALSE); 3142 3143 out: 3144 strfree(clone_name); 3145 if (ds) 3146 dsl_dataset_rele(ds, FTAG); 3147 return (error); 3148 } 3149 3150 /* 3151 * inputs: 3152 * zc_name old name of dataset 3153 * zc_value new name of dataset 3154 * zc_cookie recursive flag (only valid for snapshots) 3155 * 3156 * outputs: none 3157 */ 3158 static int 3159 zfs_ioc_rename(zfs_cmd_t *zc) 3160 { 3161 boolean_t recursive = zc->zc_cookie & 1; 3162 3163 zc->zc_value[sizeof (zc->zc_value) - 1] = '\0'; 3164 if (dataset_namecheck(zc->zc_value, NULL, NULL) != 0 || 3165 strchr(zc->zc_value, '%')) 3166 return (EINVAL); 3167 3168 /* 3169 * Unmount snapshot unless we're doing a recursive rename, 3170 * in which case the dataset code figures out which snapshots 3171 * to unmount. 3172 */ 3173 if (!recursive && strchr(zc->zc_name, '@') != NULL && 3174 zc->zc_objset_type == DMU_OST_ZFS) { 3175 int err = zfs_unmount_snap(zc->zc_name, NULL); 3176 if (err) 3177 return (err); 3178 } 3179 if (zc->zc_objset_type == DMU_OST_ZVOL) 3180 (void) zvol_remove_minor(zc->zc_name); 3181 return (dmu_objset_rename(zc->zc_name, zc->zc_value, recursive)); 3182 } 3183 3184 static int 3185 zfs_check_settable(const char *dsname, nvpair_t *pair, cred_t *cr) 3186 { 3187 const char *propname = nvpair_name(pair); 3188 boolean_t issnap = (strchr(dsname, '@') != NULL); 3189 zfs_prop_t prop = zfs_name_to_prop(propname); 3190 uint64_t intval; 3191 int err; 3192 3193 if (prop == ZPROP_INVAL) { 3194 if (zfs_prop_user(propname)) { 3195 if (err = zfs_secpolicy_write_perms(dsname, 3196 ZFS_DELEG_PERM_USERPROP, cr)) 3197 return (err); 3198 return (0); 3199 } 3200 3201 if (!issnap && zfs_prop_userquota(propname)) { 3202 const char *perm = NULL; 3203 const char *uq_prefix = 3204 zfs_userquota_prop_prefixes[ZFS_PROP_USERQUOTA]; 3205 const char *gq_prefix = 3206 zfs_userquota_prop_prefixes[ZFS_PROP_GROUPQUOTA]; 3207 3208 if (strncmp(propname, uq_prefix, 3209 strlen(uq_prefix)) == 0) { 3210 perm = ZFS_DELEG_PERM_USERQUOTA; 3211 } else if (strncmp(propname, gq_prefix, 3212 strlen(gq_prefix)) == 0) { 3213 perm = ZFS_DELEG_PERM_GROUPQUOTA; 3214 } else { 3215 /* USERUSED and GROUPUSED are read-only */ 3216 return (EINVAL); 3217 } 3218 3219 if (err = zfs_secpolicy_write_perms(dsname, perm, cr)) 3220 return (err); 3221 return (0); 3222 } 3223 3224 return (EINVAL); 3225 } 3226 3227 if (issnap) 3228 return (EINVAL); 3229 3230 if (nvpair_type(pair) == DATA_TYPE_NVLIST) { 3231 /* 3232 * dsl_prop_get_all_impl() returns properties in this 3233 * format. 3234 */ 3235 nvlist_t *attrs; 3236 VERIFY(nvpair_value_nvlist(pair, &attrs) == 0); 3237 VERIFY(nvlist_lookup_nvpair(attrs, ZPROP_VALUE, 3238 &pair) == 0); 3239 } 3240 3241 /* 3242 * Check that this value is valid for this pool version 3243 */ 3244 switch (prop) { 3245 case ZFS_PROP_COMPRESSION: 3246 /* 3247 * If the user specified gzip compression, make sure 3248 * the SPA supports it. We ignore any errors here since 3249 * we'll catch them later. 3250 */ 3251 if (nvpair_type(pair) == DATA_TYPE_UINT64 && 3252 nvpair_value_uint64(pair, &intval) == 0) { 3253 if (intval >= ZIO_COMPRESS_GZIP_1 && 3254 intval <= ZIO_COMPRESS_GZIP_9 && 3255 zfs_earlier_version(dsname, 3256 SPA_VERSION_GZIP_COMPRESSION)) { 3257 return (ENOTSUP); 3258 } 3259 3260 if (intval == ZIO_COMPRESS_ZLE && 3261 zfs_earlier_version(dsname, 3262 SPA_VERSION_ZLE_COMPRESSION)) 3263 return (ENOTSUP); 3264 3265 /* 3266 * If this is a bootable dataset then 3267 * verify that the compression algorithm 3268 * is supported for booting. We must return 3269 * something other than ENOTSUP since it 3270 * implies a downrev pool version. 3271 */ 3272 if (zfs_is_bootfs(dsname) && 3273 !BOOTFS_COMPRESS_VALID(intval)) { 3274 return (ERANGE); 3275 } 3276 } 3277 break; 3278 3279 case ZFS_PROP_COPIES: 3280 if (zfs_earlier_version(dsname, SPA_VERSION_DITTO_BLOCKS)) 3281 return (ENOTSUP); 3282 break; 3283 3284 case ZFS_PROP_DEDUP: 3285 if (zfs_earlier_version(dsname, SPA_VERSION_DEDUP)) 3286 return (ENOTSUP); 3287 break; 3288 3289 case ZFS_PROP_SHARESMB: 3290 if (zpl_earlier_version(dsname, ZPL_VERSION_FUID)) 3291 return (ENOTSUP); 3292 break; 3293 3294 case ZFS_PROP_ACLINHERIT: 3295 if (nvpair_type(pair) == DATA_TYPE_UINT64 && 3296 nvpair_value_uint64(pair, &intval) == 0) { 3297 if (intval == ZFS_ACL_PASSTHROUGH_X && 3298 zfs_earlier_version(dsname, 3299 SPA_VERSION_PASSTHROUGH_X)) 3300 return (ENOTSUP); 3301 } 3302 break; 3303 } 3304 3305 return (zfs_secpolicy_setprop(dsname, prop, pair, CRED())); 3306 } 3307 3308 /* 3309 * Removes properties from the given props list that fail permission checks 3310 * needed to clear them and to restore them in case of a receive error. For each 3311 * property, make sure we have both set and inherit permissions. 3312 * 3313 * Returns the first error encountered if any permission checks fail. If the 3314 * caller provides a non-NULL errlist, it also gives the complete list of names 3315 * of all the properties that failed a permission check along with the 3316 * corresponding error numbers. The caller is responsible for freeing the 3317 * returned errlist. 3318 * 3319 * If every property checks out successfully, zero is returned and the list 3320 * pointed at by errlist is NULL. 3321 */ 3322 static int 3323 zfs_check_clearable(char *dataset, nvlist_t *props, nvlist_t **errlist) 3324 { 3325 zfs_cmd_t *zc; 3326 nvpair_t *pair, *next_pair; 3327 nvlist_t *errors; 3328 int err, rv = 0; 3329 3330 if (props == NULL) 3331 return (0); 3332 3333 VERIFY(nvlist_alloc(&errors, NV_UNIQUE_NAME, KM_SLEEP) == 0); 3334 3335 zc = kmem_alloc(sizeof (zfs_cmd_t), KM_SLEEP); 3336 (void) strcpy(zc->zc_name, dataset); 3337 pair = nvlist_next_nvpair(props, NULL); 3338 while (pair != NULL) { 3339 next_pair = nvlist_next_nvpair(props, pair); 3340 3341 (void) strcpy(zc->zc_value, nvpair_name(pair)); 3342 if ((err = zfs_check_settable(dataset, pair, CRED())) != 0 || 3343 (err = zfs_secpolicy_inherit(zc, CRED())) != 0) { 3344 VERIFY(nvlist_remove_nvpair(props, pair) == 0); 3345 VERIFY(nvlist_add_int32(errors, 3346 zc->zc_value, err) == 0); 3347 } 3348 pair = next_pair; 3349 } 3350 kmem_free(zc, sizeof (zfs_cmd_t)); 3351 3352 if ((pair = nvlist_next_nvpair(errors, NULL)) == NULL) { 3353 nvlist_free(errors); 3354 errors = NULL; 3355 } else { 3356 VERIFY(nvpair_value_int32(pair, &rv) == 0); 3357 } 3358 3359 if (errlist == NULL) 3360 nvlist_free(errors); 3361 else 3362 *errlist = errors; 3363 3364 return (rv); 3365 } 3366 3367 static boolean_t 3368 propval_equals(nvpair_t *p1, nvpair_t *p2) 3369 { 3370 if (nvpair_type(p1) == DATA_TYPE_NVLIST) { 3371 /* dsl_prop_get_all_impl() format */ 3372 nvlist_t *attrs; 3373 VERIFY(nvpair_value_nvlist(p1, &attrs) == 0); 3374 VERIFY(nvlist_lookup_nvpair(attrs, ZPROP_VALUE, 3375 &p1) == 0); 3376 } 3377 3378 if (nvpair_type(p2) == DATA_TYPE_NVLIST) { 3379 nvlist_t *attrs; 3380 VERIFY(nvpair_value_nvlist(p2, &attrs) == 0); 3381 VERIFY(nvlist_lookup_nvpair(attrs, ZPROP_VALUE, 3382 &p2) == 0); 3383 } 3384 3385 if (nvpair_type(p1) != nvpair_type(p2)) 3386 return (B_FALSE); 3387 3388 if (nvpair_type(p1) == DATA_TYPE_STRING) { 3389 char *valstr1, *valstr2; 3390 3391 VERIFY(nvpair_value_string(p1, (char **)&valstr1) == 0); 3392 VERIFY(nvpair_value_string(p2, (char **)&valstr2) == 0); 3393 return (strcmp(valstr1, valstr2) == 0); 3394 } else { 3395 uint64_t intval1, intval2; 3396 3397 VERIFY(nvpair_value_uint64(p1, &intval1) == 0); 3398 VERIFY(nvpair_value_uint64(p2, &intval2) == 0); 3399 return (intval1 == intval2); 3400 } 3401 } 3402 3403 /* 3404 * Remove properties from props if they are not going to change (as determined 3405 * by comparison with origprops). Remove them from origprops as well, since we 3406 * do not need to clear or restore properties that won't change. 3407 */ 3408 static void 3409 props_reduce(nvlist_t *props, nvlist_t *origprops) 3410 { 3411 nvpair_t *pair, *next_pair; 3412 3413 if (origprops == NULL) 3414 return; /* all props need to be received */ 3415 3416 pair = nvlist_next_nvpair(props, NULL); 3417 while (pair != NULL) { 3418 const char *propname = nvpair_name(pair); 3419 nvpair_t *match; 3420 3421 next_pair = nvlist_next_nvpair(props, pair); 3422 3423 if ((nvlist_lookup_nvpair(origprops, propname, 3424 &match) != 0) || !propval_equals(pair, match)) 3425 goto next; /* need to set received value */ 3426 3427 /* don't clear the existing received value */ 3428 (void) nvlist_remove_nvpair(origprops, match); 3429 /* don't bother receiving the property */ 3430 (void) nvlist_remove_nvpair(props, pair); 3431 next: 3432 pair = next_pair; 3433 } 3434 } 3435 3436 #ifdef DEBUG 3437 static boolean_t zfs_ioc_recv_inject_err; 3438 #endif 3439 3440 /* 3441 * inputs: 3442 * zc_name name of containing filesystem 3443 * zc_nvlist_src{_size} nvlist of properties to apply 3444 * zc_value name of snapshot to create 3445 * zc_string name of clone origin (if DRR_FLAG_CLONE) 3446 * zc_cookie file descriptor to recv from 3447 * zc_begin_record the BEGIN record of the stream (not byteswapped) 3448 * zc_guid force flag 3449 * zc_cleanup_fd cleanup-on-exit file descriptor 3450 * zc_action_handle handle for this guid/ds mapping (or zero on first call) 3451 * 3452 * outputs: 3453 * zc_cookie number of bytes read 3454 * zc_nvlist_dst{_size} error for each unapplied received property 3455 * zc_obj zprop_errflags_t 3456 * zc_action_handle handle for this guid/ds mapping 3457 */ 3458 static int 3459 zfs_ioc_recv(zfs_cmd_t *zc) 3460 { 3461 file_t *fp; 3462 objset_t *os; 3463 dmu_recv_cookie_t drc; 3464 boolean_t force = (boolean_t)zc->zc_guid; 3465 int fd; 3466 int error = 0; 3467 int props_error = 0; 3468 nvlist_t *errors; 3469 offset_t off; 3470 nvlist_t *props = NULL; /* sent properties */ 3471 nvlist_t *origprops = NULL; /* existing properties */ 3472 objset_t *origin = NULL; 3473 char *tosnap; 3474 char tofs[ZFS_MAXNAMELEN]; 3475 boolean_t first_recvd_props = B_FALSE; 3476 3477 if (dataset_namecheck(zc->zc_value, NULL, NULL) != 0 || 3478 strchr(zc->zc_value, '@') == NULL || 3479 strchr(zc->zc_value, '%')) 3480 return (EINVAL); 3481 3482 (void) strcpy(tofs, zc->zc_value); 3483 tosnap = strchr(tofs, '@'); 3484 *tosnap++ = '\0'; 3485 3486 if (zc->zc_nvlist_src != NULL && 3487 (error = get_nvlist(zc->zc_nvlist_src, zc->zc_nvlist_src_size, 3488 zc->zc_iflags, &props)) != 0) 3489 return (error); 3490 3491 fd = zc->zc_cookie; 3492 fp = getf(fd); 3493 if (fp == NULL) { 3494 nvlist_free(props); 3495 return (EBADF); 3496 } 3497 3498 VERIFY(nvlist_alloc(&errors, NV_UNIQUE_NAME, KM_SLEEP) == 0); 3499 3500 if (props && dmu_objset_hold(tofs, FTAG, &os) == 0) { 3501 if ((spa_version(os->os_spa) >= SPA_VERSION_RECVD_PROPS) && 3502 !dsl_prop_get_hasrecvd(os)) { 3503 first_recvd_props = B_TRUE; 3504 } 3505 3506 /* 3507 * If new received properties are supplied, they are to 3508 * completely replace the existing received properties, so stash 3509 * away the existing ones. 3510 */ 3511 if (dsl_prop_get_received(os, &origprops) == 0) { 3512 nvlist_t *errlist = NULL; 3513 /* 3514 * Don't bother writing a property if its value won't 3515 * change (and avoid the unnecessary security checks). 3516 * 3517 * The first receive after SPA_VERSION_RECVD_PROPS is a 3518 * special case where we blow away all local properties 3519 * regardless. 3520 */ 3521 if (!first_recvd_props) 3522 props_reduce(props, origprops); 3523 if (zfs_check_clearable(tofs, origprops, 3524 &errlist) != 0) 3525 (void) nvlist_merge(errors, errlist, 0); 3526 nvlist_free(errlist); 3527 } 3528 3529 dmu_objset_rele(os, FTAG); 3530 } 3531 3532 if (zc->zc_string[0]) { 3533 error = dmu_objset_hold(zc->zc_string, FTAG, &origin); 3534 if (error) 3535 goto out; 3536 } 3537 3538 error = dmu_recv_begin(tofs, tosnap, zc->zc_top_ds, 3539 &zc->zc_begin_record, force, origin, &drc); 3540 if (origin) 3541 dmu_objset_rele(origin, FTAG); 3542 if (error) 3543 goto out; 3544 3545 /* 3546 * Set properties before we receive the stream so that they are applied 3547 * to the new data. Note that we must call dmu_recv_stream() if 3548 * dmu_recv_begin() succeeds. 3549 */ 3550 if (props) { 3551 nvlist_t *errlist; 3552 3553 if (dmu_objset_from_ds(drc.drc_logical_ds, &os) == 0) { 3554 if (drc.drc_newfs) { 3555 if (spa_version(os->os_spa) >= 3556 SPA_VERSION_RECVD_PROPS) 3557 first_recvd_props = B_TRUE; 3558 } else if (origprops != NULL) { 3559 if (clear_received_props(os, tofs, origprops, 3560 first_recvd_props ? NULL : props) != 0) 3561 zc->zc_obj |= ZPROP_ERR_NOCLEAR; 3562 } else { 3563 zc->zc_obj |= ZPROP_ERR_NOCLEAR; 3564 } 3565 dsl_prop_set_hasrecvd(os); 3566 } else if (!drc.drc_newfs) { 3567 zc->zc_obj |= ZPROP_ERR_NOCLEAR; 3568 } 3569 3570 (void) zfs_set_prop_nvlist(tofs, ZPROP_SRC_RECEIVED, 3571 props, &errlist); 3572 (void) nvlist_merge(errors, errlist, 0); 3573 nvlist_free(errlist); 3574 } 3575 3576 if (fit_error_list(zc, &errors) != 0 || put_nvlist(zc, errors) != 0) { 3577 /* 3578 * Caller made zc->zc_nvlist_dst less than the minimum expected 3579 * size or supplied an invalid address. 3580 */ 3581 props_error = EINVAL; 3582 } 3583 3584 off = fp->f_offset; 3585 error = dmu_recv_stream(&drc, fp->f_vnode, &off, zc->zc_cleanup_fd, 3586 &zc->zc_action_handle); 3587 3588 if (error == 0) { 3589 zfsvfs_t *zfsvfs = NULL; 3590 3591 if (getzfsvfs(tofs, &zfsvfs) == 0) { 3592 /* online recv */ 3593 int end_err; 3594 3595 error = zfs_suspend_fs(zfsvfs); 3596 /* 3597 * If the suspend fails, then the recv_end will 3598 * likely also fail, and clean up after itself. 3599 */ 3600 end_err = dmu_recv_end(&drc); 3601 if (error == 0) 3602 error = zfs_resume_fs(zfsvfs, tofs); 3603 error = error ? error : end_err; 3604 VFS_RELE(zfsvfs->z_vfs); 3605 } else { 3606 error = dmu_recv_end(&drc); 3607 } 3608 } 3609 3610 zc->zc_cookie = off - fp->f_offset; 3611 if (VOP_SEEK(fp->f_vnode, fp->f_offset, &off, NULL) == 0) 3612 fp->f_offset = off; 3613 3614 #ifdef DEBUG 3615 if (zfs_ioc_recv_inject_err) { 3616 zfs_ioc_recv_inject_err = B_FALSE; 3617 error = 1; 3618 } 3619 #endif 3620 /* 3621 * On error, restore the original props. 3622 */ 3623 if (error && props) { 3624 if (dmu_objset_hold(tofs, FTAG, &os) == 0) { 3625 if (clear_received_props(os, tofs, props, NULL) != 0) { 3626 /* 3627 * We failed to clear the received properties. 3628 * Since we may have left a $recvd value on the 3629 * system, we can't clear the $hasrecvd flag. 3630 */ 3631 zc->zc_obj |= ZPROP_ERR_NORESTORE; 3632 } else if (first_recvd_props) { 3633 dsl_prop_unset_hasrecvd(os); 3634 } 3635 dmu_objset_rele(os, FTAG); 3636 } else if (!drc.drc_newfs) { 3637 /* We failed to clear the received properties. */ 3638 zc->zc_obj |= ZPROP_ERR_NORESTORE; 3639 } 3640 3641 if (origprops == NULL && !drc.drc_newfs) { 3642 /* We failed to stash the original properties. */ 3643 zc->zc_obj |= ZPROP_ERR_NORESTORE; 3644 } 3645 3646 /* 3647 * dsl_props_set() will not convert RECEIVED to LOCAL on or 3648 * after SPA_VERSION_RECVD_PROPS, so we need to specify LOCAL 3649 * explictly if we're restoring local properties cleared in the 3650 * first new-style receive. 3651 */ 3652 if (origprops != NULL && 3653 zfs_set_prop_nvlist(tofs, (first_recvd_props ? 3654 ZPROP_SRC_LOCAL : ZPROP_SRC_RECEIVED), 3655 origprops, NULL) != 0) { 3656 /* 3657 * We stashed the original properties but failed to 3658 * restore them. 3659 */ 3660 zc->zc_obj |= ZPROP_ERR_NORESTORE; 3661 } 3662 } 3663 out: 3664 nvlist_free(props); 3665 nvlist_free(origprops); 3666 nvlist_free(errors); 3667 releasef(fd); 3668 3669 if (error == 0) 3670 error = props_error; 3671 3672 return (error); 3673 } 3674 3675 /* 3676 * inputs: 3677 * zc_name name of snapshot to send 3678 * zc_cookie file descriptor to send stream to 3679 * zc_obj fromorigin flag (mutually exclusive with zc_fromobj) 3680 * zc_sendobj objsetid of snapshot to send 3681 * zc_fromobj objsetid of incremental fromsnap (may be zero) 3682 * 3683 * outputs: none 3684 */ 3685 static int 3686 zfs_ioc_send(zfs_cmd_t *zc) 3687 { 3688 objset_t *fromsnap = NULL; 3689 objset_t *tosnap; 3690 file_t *fp; 3691 int error; 3692 offset_t off; 3693 dsl_dataset_t *ds; 3694 dsl_dataset_t *dsfrom = NULL; 3695 spa_t *spa; 3696 dsl_pool_t *dp; 3697 3698 error = spa_open(zc->zc_name, &spa, FTAG); 3699 if (error) 3700 return (error); 3701 3702 dp = spa_get_dsl(spa); 3703 rw_enter(&dp->dp_config_rwlock, RW_READER); 3704 error = dsl_dataset_hold_obj(dp, zc->zc_sendobj, FTAG, &ds); 3705 rw_exit(&dp->dp_config_rwlock); 3706 if (error) { 3707 spa_close(spa, FTAG); 3708 return (error); 3709 } 3710 3711 error = dmu_objset_from_ds(ds, &tosnap); 3712 if (error) { 3713 dsl_dataset_rele(ds, FTAG); 3714 spa_close(spa, FTAG); 3715 return (error); 3716 } 3717 3718 if (zc->zc_fromobj != 0) { 3719 rw_enter(&dp->dp_config_rwlock, RW_READER); 3720 error = dsl_dataset_hold_obj(dp, zc->zc_fromobj, FTAG, &dsfrom); 3721 rw_exit(&dp->dp_config_rwlock); 3722 spa_close(spa, FTAG); 3723 if (error) { 3724 dsl_dataset_rele(ds, FTAG); 3725 return (error); 3726 } 3727 error = dmu_objset_from_ds(dsfrom, &fromsnap); 3728 if (error) { 3729 dsl_dataset_rele(dsfrom, FTAG); 3730 dsl_dataset_rele(ds, FTAG); 3731 return (error); 3732 } 3733 } else { 3734 spa_close(spa, FTAG); 3735 } 3736 3737 fp = getf(zc->zc_cookie); 3738 if (fp == NULL) { 3739 dsl_dataset_rele(ds, FTAG); 3740 if (dsfrom) 3741 dsl_dataset_rele(dsfrom, FTAG); 3742 return (EBADF); 3743 } 3744 3745 off = fp->f_offset; 3746 error = dmu_sendbackup(tosnap, fromsnap, zc->zc_obj, fp->f_vnode, &off); 3747 3748 if (VOP_SEEK(fp->f_vnode, fp->f_offset, &off, NULL) == 0) 3749 fp->f_offset = off; 3750 releasef(zc->zc_cookie); 3751 if (dsfrom) 3752 dsl_dataset_rele(dsfrom, FTAG); 3753 dsl_dataset_rele(ds, FTAG); 3754 return (error); 3755 } 3756 3757 static int 3758 zfs_ioc_inject_fault(zfs_cmd_t *zc) 3759 { 3760 int id, error; 3761 3762 error = zio_inject_fault(zc->zc_name, (int)zc->zc_guid, &id, 3763 &zc->zc_inject_record); 3764 3765 if (error == 0) 3766 zc->zc_guid = (uint64_t)id; 3767 3768 return (error); 3769 } 3770 3771 static int 3772 zfs_ioc_clear_fault(zfs_cmd_t *zc) 3773 { 3774 return (zio_clear_fault((int)zc->zc_guid)); 3775 } 3776 3777 static int 3778 zfs_ioc_inject_list_next(zfs_cmd_t *zc) 3779 { 3780 int id = (int)zc->zc_guid; 3781 int error; 3782 3783 error = zio_inject_list_next(&id, zc->zc_name, sizeof (zc->zc_name), 3784 &zc->zc_inject_record); 3785 3786 zc->zc_guid = id; 3787 3788 return (error); 3789 } 3790 3791 static int 3792 zfs_ioc_error_log(zfs_cmd_t *zc) 3793 { 3794 spa_t *spa; 3795 int error; 3796 size_t count = (size_t)zc->zc_nvlist_dst_size; 3797 3798 if ((error = spa_open(zc->zc_name, &spa, FTAG)) != 0) 3799 return (error); 3800 3801 error = spa_get_errlog(spa, (void *)(uintptr_t)zc->zc_nvlist_dst, 3802 &count); 3803 if (error == 0) 3804 zc->zc_nvlist_dst_size = count; 3805 else 3806 zc->zc_nvlist_dst_size = spa_get_errlog_size(spa); 3807 3808 spa_close(spa, FTAG); 3809 3810 return (error); 3811 } 3812 3813 static int 3814 zfs_ioc_clear(zfs_cmd_t *zc) 3815 { 3816 spa_t *spa; 3817 vdev_t *vd; 3818 int error; 3819 3820 /* 3821 * On zpool clear we also fix up missing slogs 3822 */ 3823 mutex_enter(&spa_namespace_lock); 3824 spa = spa_lookup(zc->zc_name); 3825 if (spa == NULL) { 3826 mutex_exit(&spa_namespace_lock); 3827 return (EIO); 3828 } 3829 if (spa_get_log_state(spa) == SPA_LOG_MISSING) { 3830 /* we need to let spa_open/spa_load clear the chains */ 3831 spa_set_log_state(spa, SPA_LOG_CLEAR); 3832 } 3833 spa->spa_last_open_failed = 0; 3834 mutex_exit(&spa_namespace_lock); 3835 3836 if (zc->zc_cookie & ZPOOL_NO_REWIND) { 3837 error = spa_open(zc->zc_name, &spa, FTAG); 3838 } else { 3839 nvlist_t *policy; 3840 nvlist_t *config = NULL; 3841 3842 if (zc->zc_nvlist_src == NULL) 3843 return (EINVAL); 3844 3845 if ((error = get_nvlist(zc->zc_nvlist_src, 3846 zc->zc_nvlist_src_size, zc->zc_iflags, &policy)) == 0) { 3847 error = spa_open_rewind(zc->zc_name, &spa, FTAG, 3848 policy, &config); 3849 if (config != NULL) { 3850 (void) put_nvlist(zc, config); 3851 nvlist_free(config); 3852 } 3853 nvlist_free(policy); 3854 } 3855 } 3856 3857 if (error) 3858 return (error); 3859 3860 spa_vdev_state_enter(spa, SCL_NONE); 3861 3862 if (zc->zc_guid == 0) { 3863 vd = NULL; 3864 } else { 3865 vd = spa_lookup_by_guid(spa, zc->zc_guid, B_TRUE); 3866 if (vd == NULL) { 3867 (void) spa_vdev_state_exit(spa, NULL, ENODEV); 3868 spa_close(spa, FTAG); 3869 return (ENODEV); 3870 } 3871 } 3872 3873 vdev_clear(spa, vd); 3874 3875 (void) spa_vdev_state_exit(spa, NULL, 0); 3876 3877 /* 3878 * Resume any suspended I/Os. 3879 */ 3880 if (zio_resume(spa) != 0) 3881 error = EIO; 3882 3883 spa_close(spa, FTAG); 3884 3885 return (error); 3886 } 3887 3888 /* 3889 * inputs: 3890 * zc_name name of filesystem 3891 * zc_value name of origin snapshot 3892 * 3893 * outputs: 3894 * zc_string name of conflicting snapshot, if there is one 3895 */ 3896 static int 3897 zfs_ioc_promote(zfs_cmd_t *zc) 3898 { 3899 char *cp; 3900 3901 /* 3902 * We don't need to unmount *all* the origin fs's snapshots, but 3903 * it's easier. 3904 */ 3905 cp = strchr(zc->zc_value, '@'); 3906 if (cp) 3907 *cp = '\0'; 3908 (void) dmu_objset_find(zc->zc_value, 3909 zfs_unmount_snap, NULL, DS_FIND_SNAPSHOTS); 3910 return (dsl_dataset_promote(zc->zc_name, zc->zc_string)); 3911 } 3912 3913 /* 3914 * Retrieve a single {user|group}{used|quota}@... property. 3915 * 3916 * inputs: 3917 * zc_name name of filesystem 3918 * zc_objset_type zfs_userquota_prop_t 3919 * zc_value domain name (eg. "S-1-234-567-89") 3920 * zc_guid RID/UID/GID 3921 * 3922 * outputs: 3923 * zc_cookie property value 3924 */ 3925 static int 3926 zfs_ioc_userspace_one(zfs_cmd_t *zc) 3927 { 3928 zfsvfs_t *zfsvfs; 3929 int error; 3930 3931 if (zc->zc_objset_type >= ZFS_NUM_USERQUOTA_PROPS) 3932 return (EINVAL); 3933 3934 error = zfsvfs_hold(zc->zc_name, FTAG, &zfsvfs, B_FALSE); 3935 if (error) 3936 return (error); 3937 3938 error = zfs_userspace_one(zfsvfs, 3939 zc->zc_objset_type, zc->zc_value, zc->zc_guid, &zc->zc_cookie); 3940 zfsvfs_rele(zfsvfs, FTAG); 3941 3942 return (error); 3943 } 3944 3945 /* 3946 * inputs: 3947 * zc_name name of filesystem 3948 * zc_cookie zap cursor 3949 * zc_objset_type zfs_userquota_prop_t 3950 * zc_nvlist_dst[_size] buffer to fill (not really an nvlist) 3951 * 3952 * outputs: 3953 * zc_nvlist_dst[_size] data buffer (array of zfs_useracct_t) 3954 * zc_cookie zap cursor 3955 */ 3956 static int 3957 zfs_ioc_userspace_many(zfs_cmd_t *zc) 3958 { 3959 zfsvfs_t *zfsvfs; 3960 int bufsize = zc->zc_nvlist_dst_size; 3961 3962 if (bufsize <= 0) 3963 return (ENOMEM); 3964 3965 int error = zfsvfs_hold(zc->zc_name, FTAG, &zfsvfs, B_FALSE); 3966 if (error) 3967 return (error); 3968 3969 void *buf = kmem_alloc(bufsize, KM_SLEEP); 3970 3971 error = zfs_userspace_many(zfsvfs, zc->zc_objset_type, &zc->zc_cookie, 3972 buf, &zc->zc_nvlist_dst_size); 3973 3974 if (error == 0) { 3975 error = xcopyout(buf, 3976 (void *)(uintptr_t)zc->zc_nvlist_dst, 3977 zc->zc_nvlist_dst_size); 3978 } 3979 kmem_free(buf, bufsize); 3980 zfsvfs_rele(zfsvfs, FTAG); 3981 3982 return (error); 3983 } 3984 3985 /* 3986 * inputs: 3987 * zc_name name of filesystem 3988 * 3989 * outputs: 3990 * none 3991 */ 3992 static int 3993 zfs_ioc_userspace_upgrade(zfs_cmd_t *zc) 3994 { 3995 objset_t *os; 3996 int error = 0; 3997 zfsvfs_t *zfsvfs; 3998 3999 if (getzfsvfs(zc->zc_name, &zfsvfs) == 0) { 4000 if (!dmu_objset_userused_enabled(zfsvfs->z_os)) { 4001 /* 4002 * If userused is not enabled, it may be because the 4003 * objset needs to be closed & reopened (to grow the 4004 * objset_phys_t). Suspend/resume the fs will do that. 4005 */ 4006 error = zfs_suspend_fs(zfsvfs); 4007 if (error == 0) 4008 error = zfs_resume_fs(zfsvfs, zc->zc_name); 4009 } 4010 if (error == 0) 4011 error = dmu_objset_userspace_upgrade(zfsvfs->z_os); 4012 VFS_RELE(zfsvfs->z_vfs); 4013 } else { 4014 /* XXX kind of reading contents without owning */ 4015 error = dmu_objset_hold(zc->zc_name, FTAG, &os); 4016 if (error) 4017 return (error); 4018 4019 error = dmu_objset_userspace_upgrade(os); 4020 dmu_objset_rele(os, FTAG); 4021 } 4022 4023 return (error); 4024 } 4025 4026 /* 4027 * We don't want to have a hard dependency 4028 * against some special symbols in sharefs 4029 * nfs, and smbsrv. Determine them if needed when 4030 * the first file system is shared. 4031 * Neither sharefs, nfs or smbsrv are unloadable modules. 4032 */ 4033 int (*znfsexport_fs)(void *arg); 4034 int (*zshare_fs)(enum sharefs_sys_op, share_t *, uint32_t); 4035 int (*zsmbexport_fs)(void *arg, boolean_t add_share); 4036 4037 int zfs_nfsshare_inited; 4038 int zfs_smbshare_inited; 4039 4040 ddi_modhandle_t nfs_mod; 4041 ddi_modhandle_t sharefs_mod; 4042 ddi_modhandle_t smbsrv_mod; 4043 kmutex_t zfs_share_lock; 4044 4045 static int 4046 zfs_init_sharefs() 4047 { 4048 int error; 4049 4050 ASSERT(MUTEX_HELD(&zfs_share_lock)); 4051 /* Both NFS and SMB shares also require sharetab support. */ 4052 if (sharefs_mod == NULL && ((sharefs_mod = 4053 ddi_modopen("fs/sharefs", 4054 KRTLD_MODE_FIRST, &error)) == NULL)) { 4055 return (ENOSYS); 4056 } 4057 if (zshare_fs == NULL && ((zshare_fs = 4058 (int (*)(enum sharefs_sys_op, share_t *, uint32_t)) 4059 ddi_modsym(sharefs_mod, "sharefs_impl", &error)) == NULL)) { 4060 return (ENOSYS); 4061 } 4062 return (0); 4063 } 4064 4065 static int 4066 zfs_ioc_share(zfs_cmd_t *zc) 4067 { 4068 int error; 4069 int opcode; 4070 4071 switch (zc->zc_share.z_sharetype) { 4072 case ZFS_SHARE_NFS: 4073 case ZFS_UNSHARE_NFS: 4074 if (zfs_nfsshare_inited == 0) { 4075 mutex_enter(&zfs_share_lock); 4076 if (nfs_mod == NULL && ((nfs_mod = ddi_modopen("fs/nfs", 4077 KRTLD_MODE_FIRST, &error)) == NULL)) { 4078 mutex_exit(&zfs_share_lock); 4079 return (ENOSYS); 4080 } 4081 if (znfsexport_fs == NULL && 4082 ((znfsexport_fs = (int (*)(void *)) 4083 ddi_modsym(nfs_mod, 4084 "nfs_export", &error)) == NULL)) { 4085 mutex_exit(&zfs_share_lock); 4086 return (ENOSYS); 4087 } 4088 error = zfs_init_sharefs(); 4089 if (error) { 4090 mutex_exit(&zfs_share_lock); 4091 return (ENOSYS); 4092 } 4093 zfs_nfsshare_inited = 1; 4094 mutex_exit(&zfs_share_lock); 4095 } 4096 break; 4097 case ZFS_SHARE_SMB: 4098 case ZFS_UNSHARE_SMB: 4099 if (zfs_smbshare_inited == 0) { 4100 mutex_enter(&zfs_share_lock); 4101 if (smbsrv_mod == NULL && ((smbsrv_mod = 4102 ddi_modopen("drv/smbsrv", 4103 KRTLD_MODE_FIRST, &error)) == NULL)) { 4104 mutex_exit(&zfs_share_lock); 4105 return (ENOSYS); 4106 } 4107 if (zsmbexport_fs == NULL && ((zsmbexport_fs = 4108 (int (*)(void *, boolean_t))ddi_modsym(smbsrv_mod, 4109 "smb_server_share", &error)) == NULL)) { 4110 mutex_exit(&zfs_share_lock); 4111 return (ENOSYS); 4112 } 4113 error = zfs_init_sharefs(); 4114 if (error) { 4115 mutex_exit(&zfs_share_lock); 4116 return (ENOSYS); 4117 } 4118 zfs_smbshare_inited = 1; 4119 mutex_exit(&zfs_share_lock); 4120 } 4121 break; 4122 default: 4123 return (EINVAL); 4124 } 4125 4126 switch (zc->zc_share.z_sharetype) { 4127 case ZFS_SHARE_NFS: 4128 case ZFS_UNSHARE_NFS: 4129 if (error = 4130 znfsexport_fs((void *) 4131 (uintptr_t)zc->zc_share.z_exportdata)) 4132 return (error); 4133 break; 4134 case ZFS_SHARE_SMB: 4135 case ZFS_UNSHARE_SMB: 4136 if (error = zsmbexport_fs((void *) 4137 (uintptr_t)zc->zc_share.z_exportdata, 4138 zc->zc_share.z_sharetype == ZFS_SHARE_SMB ? 4139 B_TRUE: B_FALSE)) { 4140 return (error); 4141 } 4142 break; 4143 } 4144 4145 opcode = (zc->zc_share.z_sharetype == ZFS_SHARE_NFS || 4146 zc->zc_share.z_sharetype == ZFS_SHARE_SMB) ? 4147 SHAREFS_ADD : SHAREFS_REMOVE; 4148 4149 /* 4150 * Add or remove share from sharetab 4151 */ 4152 error = zshare_fs(opcode, 4153 (void *)(uintptr_t)zc->zc_share.z_sharedata, 4154 zc->zc_share.z_sharemax); 4155 4156 return (error); 4157 4158 } 4159 4160 ace_t full_access[] = { 4161 {(uid_t)-1, ACE_ALL_PERMS, ACE_EVERYONE, 0} 4162 }; 4163 4164 /* 4165 * Remove all ACL files in shares dir 4166 */ 4167 static int 4168 zfs_smb_acl_purge(znode_t *dzp) 4169 { 4170 zap_cursor_t zc; 4171 zap_attribute_t zap; 4172 zfsvfs_t *zfsvfs = dzp->z_zfsvfs; 4173 int error; 4174 4175 for (zap_cursor_init(&zc, zfsvfs->z_os, dzp->z_id); 4176 (error = zap_cursor_retrieve(&zc, &zap)) == 0; 4177 zap_cursor_advance(&zc)) { 4178 if ((error = VOP_REMOVE(ZTOV(dzp), zap.za_name, kcred, 4179 NULL, 0)) != 0) 4180 break; 4181 } 4182 zap_cursor_fini(&zc); 4183 return (error); 4184 } 4185 4186 static int 4187 zfs_ioc_smb_acl(zfs_cmd_t *zc) 4188 { 4189 vnode_t *vp; 4190 znode_t *dzp; 4191 vnode_t *resourcevp = NULL; 4192 znode_t *sharedir; 4193 zfsvfs_t *zfsvfs; 4194 nvlist_t *nvlist; 4195 char *src, *target; 4196 vattr_t vattr; 4197 vsecattr_t vsec; 4198 int error = 0; 4199 4200 if ((error = lookupname(zc->zc_value, UIO_SYSSPACE, 4201 NO_FOLLOW, NULL, &vp)) != 0) 4202 return (error); 4203 4204 /* Now make sure mntpnt and dataset are ZFS */ 4205 4206 if (vp->v_vfsp->vfs_fstype != zfsfstype || 4207 (strcmp((char *)refstr_value(vp->v_vfsp->vfs_resource), 4208 zc->zc_name) != 0)) { 4209 VN_RELE(vp); 4210 return (EINVAL); 4211 } 4212 4213 dzp = VTOZ(vp); 4214 zfsvfs = dzp->z_zfsvfs; 4215 ZFS_ENTER(zfsvfs); 4216 4217 /* 4218 * Create share dir if its missing. 4219 */ 4220 mutex_enter(&zfsvfs->z_lock); 4221 if (zfsvfs->z_shares_dir == 0) { 4222 dmu_tx_t *tx; 4223 4224 tx = dmu_tx_create(zfsvfs->z_os); 4225 dmu_tx_hold_zap(tx, MASTER_NODE_OBJ, TRUE, 4226 ZFS_SHARES_DIR); 4227 dmu_tx_hold_zap(tx, DMU_NEW_OBJECT, FALSE, NULL); 4228 error = dmu_tx_assign(tx, TXG_WAIT); 4229 if (error) { 4230 dmu_tx_abort(tx); 4231 } else { 4232 error = zfs_create_share_dir(zfsvfs, tx); 4233 dmu_tx_commit(tx); 4234 } 4235 if (error) { 4236 mutex_exit(&zfsvfs->z_lock); 4237 VN_RELE(vp); 4238 ZFS_EXIT(zfsvfs); 4239 return (error); 4240 } 4241 } 4242 mutex_exit(&zfsvfs->z_lock); 4243 4244 ASSERT(zfsvfs->z_shares_dir); 4245 if ((error = zfs_zget(zfsvfs, zfsvfs->z_shares_dir, &sharedir)) != 0) { 4246 VN_RELE(vp); 4247 ZFS_EXIT(zfsvfs); 4248 return (error); 4249 } 4250 4251 switch (zc->zc_cookie) { 4252 case ZFS_SMB_ACL_ADD: 4253 vattr.va_mask = AT_MODE|AT_UID|AT_GID|AT_TYPE; 4254 vattr.va_type = VREG; 4255 vattr.va_mode = S_IFREG|0777; 4256 vattr.va_uid = 0; 4257 vattr.va_gid = 0; 4258 4259 vsec.vsa_mask = VSA_ACE; 4260 vsec.vsa_aclentp = &full_access; 4261 vsec.vsa_aclentsz = sizeof (full_access); 4262 vsec.vsa_aclcnt = 1; 4263 4264 error = VOP_CREATE(ZTOV(sharedir), zc->zc_string, 4265 &vattr, EXCL, 0, &resourcevp, kcred, 0, NULL, &vsec); 4266 if (resourcevp) 4267 VN_RELE(resourcevp); 4268 break; 4269 4270 case ZFS_SMB_ACL_REMOVE: 4271 error = VOP_REMOVE(ZTOV(sharedir), zc->zc_string, kcred, 4272 NULL, 0); 4273 break; 4274 4275 case ZFS_SMB_ACL_RENAME: 4276 if ((error = get_nvlist(zc->zc_nvlist_src, 4277 zc->zc_nvlist_src_size, zc->zc_iflags, &nvlist)) != 0) { 4278 VN_RELE(vp); 4279 ZFS_EXIT(zfsvfs); 4280 return (error); 4281 } 4282 if (nvlist_lookup_string(nvlist, ZFS_SMB_ACL_SRC, &src) || 4283 nvlist_lookup_string(nvlist, ZFS_SMB_ACL_TARGET, 4284 &target)) { 4285 VN_RELE(vp); 4286 VN_RELE(ZTOV(sharedir)); 4287 ZFS_EXIT(zfsvfs); 4288 nvlist_free(nvlist); 4289 return (error); 4290 } 4291 error = VOP_RENAME(ZTOV(sharedir), src, ZTOV(sharedir), target, 4292 kcred, NULL, 0); 4293 nvlist_free(nvlist); 4294 break; 4295 4296 case ZFS_SMB_ACL_PURGE: 4297 error = zfs_smb_acl_purge(sharedir); 4298 break; 4299 4300 default: 4301 error = EINVAL; 4302 break; 4303 } 4304 4305 VN_RELE(vp); 4306 VN_RELE(ZTOV(sharedir)); 4307 4308 ZFS_EXIT(zfsvfs); 4309 4310 return (error); 4311 } 4312 4313 /* 4314 * inputs: 4315 * zc_name name of filesystem 4316 * zc_value short name of snap 4317 * zc_string user-supplied tag for this hold 4318 * zc_cookie recursive flag 4319 * zc_temphold set if hold is temporary 4320 * zc_cleanup_fd cleanup-on-exit file descriptor for calling process 4321 * zc_sendobj if non-zero, the objid for zc_name@zc_value 4322 * zc_createtxg if zc_sendobj is non-zero, snap must have zc_createtxg 4323 * 4324 * outputs: none 4325 */ 4326 static int 4327 zfs_ioc_hold(zfs_cmd_t *zc) 4328 { 4329 boolean_t recursive = zc->zc_cookie; 4330 spa_t *spa; 4331 dsl_pool_t *dp; 4332 dsl_dataset_t *ds; 4333 int error; 4334 minor_t minor = 0; 4335 4336 if (snapshot_namecheck(zc->zc_value, NULL, NULL) != 0) 4337 return (EINVAL); 4338 4339 if (zc->zc_sendobj == 0) { 4340 return (dsl_dataset_user_hold(zc->zc_name, zc->zc_value, 4341 zc->zc_string, recursive, zc->zc_temphold, 4342 zc->zc_cleanup_fd)); 4343 } 4344 4345 if (recursive) 4346 return (EINVAL); 4347 4348 error = spa_open(zc->zc_name, &spa, FTAG); 4349 if (error) 4350 return (error); 4351 4352 dp = spa_get_dsl(spa); 4353 rw_enter(&dp->dp_config_rwlock, RW_READER); 4354 error = dsl_dataset_hold_obj(dp, zc->zc_sendobj, FTAG, &ds); 4355 rw_exit(&dp->dp_config_rwlock); 4356 spa_close(spa, FTAG); 4357 if (error) 4358 return (error); 4359 4360 /* 4361 * Until we have a hold on this snapshot, it's possible that 4362 * zc_sendobj could've been destroyed and reused as part 4363 * of a later txg. Make sure we're looking at the right object. 4364 */ 4365 if (zc->zc_createtxg != ds->ds_phys->ds_creation_txg) { 4366 dsl_dataset_rele(ds, FTAG); 4367 return (ENOENT); 4368 } 4369 4370 if (zc->zc_cleanup_fd != -1 && zc->zc_temphold) { 4371 error = zfs_onexit_fd_hold(zc->zc_cleanup_fd, &minor); 4372 if (error) { 4373 dsl_dataset_rele(ds, FTAG); 4374 return (error); 4375 } 4376 } 4377 4378 error = dsl_dataset_user_hold_for_send(ds, zc->zc_string, 4379 zc->zc_temphold); 4380 if (minor != 0) { 4381 if (error == 0) { 4382 dsl_register_onexit_hold_cleanup(ds, zc->zc_string, 4383 minor); 4384 } 4385 zfs_onexit_fd_rele(zc->zc_cleanup_fd); 4386 } 4387 dsl_dataset_rele(ds, FTAG); 4388 4389 return (error); 4390 } 4391 4392 /* 4393 * inputs: 4394 * zc_name name of dataset from which we're releasing a user hold 4395 * zc_value short name of snap 4396 * zc_string user-supplied tag for this hold 4397 * zc_cookie recursive flag 4398 * 4399 * outputs: none 4400 */ 4401 static int 4402 zfs_ioc_release(zfs_cmd_t *zc) 4403 { 4404 boolean_t recursive = zc->zc_cookie; 4405 4406 if (snapshot_namecheck(zc->zc_value, NULL, NULL) != 0) 4407 return (EINVAL); 4408 4409 return (dsl_dataset_user_release(zc->zc_name, zc->zc_value, 4410 zc->zc_string, recursive)); 4411 } 4412 4413 /* 4414 * inputs: 4415 * zc_name name of filesystem 4416 * 4417 * outputs: 4418 * zc_nvlist_src{_size} nvlist of snapshot holds 4419 */ 4420 static int 4421 zfs_ioc_get_holds(zfs_cmd_t *zc) 4422 { 4423 nvlist_t *nvp; 4424 int error; 4425 4426 if ((error = dsl_dataset_get_holds(zc->zc_name, &nvp)) == 0) { 4427 error = put_nvlist(zc, nvp); 4428 nvlist_free(nvp); 4429 } 4430 4431 return (error); 4432 } 4433 4434 /* 4435 * pool create, destroy, and export don't log the history as part of 4436 * zfsdev_ioctl, but rather zfs_ioc_pool_create, and zfs_ioc_pool_export 4437 * do the logging of those commands. 4438 */ 4439 static zfs_ioc_vec_t zfs_ioc_vec[] = { 4440 { zfs_ioc_pool_create, zfs_secpolicy_config, POOL_NAME, B_FALSE, 4441 B_FALSE }, 4442 { zfs_ioc_pool_destroy, zfs_secpolicy_config, POOL_NAME, B_FALSE, 4443 B_FALSE }, 4444 { zfs_ioc_pool_import, zfs_secpolicy_config, POOL_NAME, B_TRUE, 4445 B_FALSE }, 4446 { zfs_ioc_pool_export, zfs_secpolicy_config, POOL_NAME, B_FALSE, 4447 B_FALSE }, 4448 { zfs_ioc_pool_configs, zfs_secpolicy_none, NO_NAME, B_FALSE, 4449 B_FALSE }, 4450 { zfs_ioc_pool_stats, zfs_secpolicy_read, POOL_NAME, B_FALSE, 4451 B_FALSE }, 4452 { zfs_ioc_pool_tryimport, zfs_secpolicy_config, NO_NAME, B_FALSE, 4453 B_FALSE }, 4454 { zfs_ioc_pool_scan, zfs_secpolicy_config, POOL_NAME, B_TRUE, 4455 B_TRUE }, 4456 { zfs_ioc_pool_freeze, zfs_secpolicy_config, NO_NAME, B_FALSE, 4457 B_FALSE }, 4458 { zfs_ioc_pool_upgrade, zfs_secpolicy_config, POOL_NAME, B_TRUE, 4459 B_TRUE }, 4460 { zfs_ioc_pool_get_history, zfs_secpolicy_config, POOL_NAME, B_FALSE, 4461 B_FALSE }, 4462 { zfs_ioc_vdev_add, zfs_secpolicy_config, POOL_NAME, B_TRUE, 4463 B_TRUE }, 4464 { zfs_ioc_vdev_remove, zfs_secpolicy_config, POOL_NAME, B_TRUE, 4465 B_TRUE }, 4466 { zfs_ioc_vdev_set_state, zfs_secpolicy_config, POOL_NAME, B_TRUE, 4467 B_FALSE }, 4468 { zfs_ioc_vdev_attach, zfs_secpolicy_config, POOL_NAME, B_TRUE, 4469 B_TRUE }, 4470 { zfs_ioc_vdev_detach, zfs_secpolicy_config, POOL_NAME, B_TRUE, 4471 B_TRUE }, 4472 { zfs_ioc_vdev_setpath, zfs_secpolicy_config, POOL_NAME, B_FALSE, 4473 B_TRUE }, 4474 { zfs_ioc_vdev_setfru, zfs_secpolicy_config, POOL_NAME, B_FALSE, 4475 B_TRUE }, 4476 { zfs_ioc_objset_stats, zfs_secpolicy_read, DATASET_NAME, B_FALSE, 4477 B_TRUE }, 4478 { zfs_ioc_objset_zplprops, zfs_secpolicy_read, DATASET_NAME, B_FALSE, 4479 B_FALSE }, 4480 { zfs_ioc_dataset_list_next, zfs_secpolicy_read, DATASET_NAME, B_FALSE, 4481 B_TRUE }, 4482 { zfs_ioc_snapshot_list_next, zfs_secpolicy_read, DATASET_NAME, B_FALSE, 4483 B_TRUE }, 4484 { zfs_ioc_set_prop, zfs_secpolicy_none, DATASET_NAME, B_TRUE, B_TRUE }, 4485 { zfs_ioc_create, zfs_secpolicy_create, DATASET_NAME, B_TRUE, B_TRUE }, 4486 { zfs_ioc_destroy, zfs_secpolicy_destroy, DATASET_NAME, B_TRUE, 4487 B_TRUE}, 4488 { zfs_ioc_rollback, zfs_secpolicy_rollback, DATASET_NAME, B_TRUE, 4489 B_TRUE }, 4490 { zfs_ioc_rename, zfs_secpolicy_rename, DATASET_NAME, B_TRUE, B_TRUE }, 4491 { zfs_ioc_recv, zfs_secpolicy_receive, DATASET_NAME, B_TRUE, B_TRUE }, 4492 { zfs_ioc_send, zfs_secpolicy_send, DATASET_NAME, B_TRUE, B_FALSE }, 4493 { zfs_ioc_inject_fault, zfs_secpolicy_inject, NO_NAME, B_FALSE, 4494 B_FALSE }, 4495 { zfs_ioc_clear_fault, zfs_secpolicy_inject, NO_NAME, B_FALSE, 4496 B_FALSE }, 4497 { zfs_ioc_inject_list_next, zfs_secpolicy_inject, NO_NAME, B_FALSE, 4498 B_FALSE }, 4499 { zfs_ioc_error_log, zfs_secpolicy_inject, POOL_NAME, B_FALSE, 4500 B_FALSE }, 4501 { zfs_ioc_clear, zfs_secpolicy_config, POOL_NAME, B_TRUE, B_FALSE }, 4502 { zfs_ioc_promote, zfs_secpolicy_promote, DATASET_NAME, B_TRUE, 4503 B_TRUE }, 4504 { zfs_ioc_destroy_snaps, zfs_secpolicy_destroy_snaps, DATASET_NAME, 4505 B_TRUE, B_TRUE }, 4506 { zfs_ioc_snapshot, zfs_secpolicy_snapshot, DATASET_NAME, B_TRUE, 4507 B_TRUE }, 4508 { zfs_ioc_dsobj_to_dsname, zfs_secpolicy_config, POOL_NAME, B_FALSE, 4509 B_FALSE }, 4510 { zfs_ioc_obj_to_path, zfs_secpolicy_config, DATASET_NAME, B_FALSE, 4511 B_TRUE }, 4512 { zfs_ioc_pool_set_props, zfs_secpolicy_config, POOL_NAME, B_TRUE, 4513 B_TRUE }, 4514 { zfs_ioc_pool_get_props, zfs_secpolicy_read, POOL_NAME, B_FALSE, 4515 B_FALSE }, 4516 { zfs_ioc_set_fsacl, zfs_secpolicy_fsacl, DATASET_NAME, B_TRUE, 4517 B_TRUE }, 4518 { zfs_ioc_get_fsacl, zfs_secpolicy_read, DATASET_NAME, B_FALSE, 4519 B_FALSE }, 4520 { zfs_ioc_share, zfs_secpolicy_share, DATASET_NAME, B_FALSE, B_FALSE }, 4521 { zfs_ioc_inherit_prop, zfs_secpolicy_inherit, DATASET_NAME, B_TRUE, 4522 B_TRUE }, 4523 { zfs_ioc_smb_acl, zfs_secpolicy_smb_acl, DATASET_NAME, B_FALSE, 4524 B_FALSE }, 4525 { zfs_ioc_userspace_one, zfs_secpolicy_userspace_one, 4526 DATASET_NAME, B_FALSE, B_FALSE }, 4527 { zfs_ioc_userspace_many, zfs_secpolicy_userspace_many, 4528 DATASET_NAME, B_FALSE, B_FALSE }, 4529 { zfs_ioc_userspace_upgrade, zfs_secpolicy_userspace_upgrade, 4530 DATASET_NAME, B_FALSE, B_TRUE }, 4531 { zfs_ioc_hold, zfs_secpolicy_hold, DATASET_NAME, B_TRUE, B_TRUE }, 4532 { zfs_ioc_release, zfs_secpolicy_release, DATASET_NAME, B_TRUE, 4533 B_TRUE }, 4534 { zfs_ioc_get_holds, zfs_secpolicy_read, DATASET_NAME, B_FALSE, 4535 B_TRUE }, 4536 { zfs_ioc_objset_recvd_props, zfs_secpolicy_read, DATASET_NAME, B_FALSE, 4537 B_FALSE }, 4538 { zfs_ioc_vdev_split, zfs_secpolicy_config, POOL_NAME, B_TRUE, 4539 B_TRUE } 4540 }; 4541 4542 int 4543 pool_status_check(const char *name, zfs_ioc_namecheck_t type) 4544 { 4545 spa_t *spa; 4546 int error; 4547 4548 ASSERT(type == POOL_NAME || type == DATASET_NAME); 4549 4550 error = spa_open(name, &spa, FTAG); 4551 if (error == 0) { 4552 if (spa_suspended(spa)) 4553 error = EAGAIN; 4554 spa_close(spa, FTAG); 4555 } 4556 return (error); 4557 } 4558 4559 /* 4560 * Find a free minor number. 4561 */ 4562 minor_t 4563 zfsdev_minor_alloc(void) 4564 { 4565 static minor_t last_minor; 4566 minor_t m; 4567 4568 ASSERT(MUTEX_HELD(&zfsdev_state_lock)); 4569 4570 for (m = last_minor + 1; m != last_minor; m++) { 4571 if (m > ZFSDEV_MAX_MINOR) 4572 m = 1; 4573 if (ddi_get_soft_state(zfsdev_state, m) == NULL) { 4574 last_minor = m; 4575 return (m); 4576 } 4577 } 4578 4579 return (0); 4580 } 4581 4582 static int 4583 zfs_ctldev_init(dev_t *devp) 4584 { 4585 minor_t minor; 4586 zfs_soft_state_t *zs; 4587 4588 ASSERT(MUTEX_HELD(&zfsdev_state_lock)); 4589 ASSERT(getminor(*devp) == 0); 4590 4591 minor = zfsdev_minor_alloc(); 4592 if (minor == 0) 4593 return (ENXIO); 4594 4595 if (ddi_soft_state_zalloc(zfsdev_state, minor) != DDI_SUCCESS) 4596 return (EAGAIN); 4597 4598 *devp = makedevice(getemajor(*devp), minor); 4599 4600 zs = ddi_get_soft_state(zfsdev_state, minor); 4601 zs->zss_type = ZSST_CTLDEV; 4602 zfs_onexit_init((zfs_onexit_t **)&zs->zss_data); 4603 4604 return (0); 4605 } 4606 4607 static void 4608 zfs_ctldev_destroy(zfs_onexit_t *zo, minor_t minor) 4609 { 4610 ASSERT(MUTEX_HELD(&zfsdev_state_lock)); 4611 4612 zfs_onexit_destroy(zo); 4613 ddi_soft_state_free(zfsdev_state, minor); 4614 } 4615 4616 void * 4617 zfsdev_get_soft_state(minor_t minor, enum zfs_soft_state_type which) 4618 { 4619 zfs_soft_state_t *zp; 4620 4621 zp = ddi_get_soft_state(zfsdev_state, minor); 4622 if (zp == NULL || zp->zss_type != which) 4623 return (NULL); 4624 4625 return (zp->zss_data); 4626 } 4627 4628 static int 4629 zfsdev_open(dev_t *devp, int flag, int otyp, cred_t *cr) 4630 { 4631 int error = 0; 4632 4633 if (getminor(*devp) != 0) 4634 return (zvol_open(devp, flag, otyp, cr)); 4635 4636 /* This is the control device. Allocate a new minor if requested. */ 4637 if (flag & FEXCL) { 4638 mutex_enter(&zfsdev_state_lock); 4639 error = zfs_ctldev_init(devp); 4640 mutex_exit(&zfsdev_state_lock); 4641 } 4642 4643 return (error); 4644 } 4645 4646 static int 4647 zfsdev_close(dev_t dev, int flag, int otyp, cred_t *cr) 4648 { 4649 zfs_onexit_t *zo; 4650 minor_t minor = getminor(dev); 4651 4652 if (minor == 0) 4653 return (0); 4654 4655 mutex_enter(&zfsdev_state_lock); 4656 zo = zfsdev_get_soft_state(minor, ZSST_CTLDEV); 4657 if (zo == NULL) { 4658 mutex_exit(&zfsdev_state_lock); 4659 return (zvol_close(dev, flag, otyp, cr)); 4660 } 4661 zfs_ctldev_destroy(zo, minor); 4662 mutex_exit(&zfsdev_state_lock); 4663 4664 return (0); 4665 } 4666 4667 static int 4668 zfsdev_ioctl(dev_t dev, int cmd, intptr_t arg, int flag, cred_t *cr, int *rvalp) 4669 { 4670 zfs_cmd_t *zc; 4671 uint_t vec; 4672 int error, rc; 4673 minor_t minor = getminor(dev); 4674 4675 if (minor != 0 && 4676 zfsdev_get_soft_state(minor, ZSST_CTLDEV) == NULL) 4677 return (zvol_ioctl(dev, cmd, arg, flag, cr, rvalp)); 4678 4679 vec = cmd - ZFS_IOC; 4680 ASSERT3U(getmajor(dev), ==, ddi_driver_major(zfs_dip)); 4681 4682 if (vec >= sizeof (zfs_ioc_vec) / sizeof (zfs_ioc_vec[0])) 4683 return (EINVAL); 4684 4685 zc = kmem_zalloc(sizeof (zfs_cmd_t), KM_SLEEP); 4686 4687 error = ddi_copyin((void *)arg, zc, sizeof (zfs_cmd_t), flag); 4688 if (error != 0) 4689 error = EFAULT; 4690 4691 if ((error == 0) && !(flag & FKIOCTL)) 4692 error = zfs_ioc_vec[vec].zvec_secpolicy(zc, cr); 4693 4694 /* 4695 * Ensure that all pool/dataset names are valid before we pass down to 4696 * the lower layers. 4697 */ 4698 if (error == 0) { 4699 zc->zc_name[sizeof (zc->zc_name) - 1] = '\0'; 4700 zc->zc_iflags = flag & FKIOCTL; 4701 switch (zfs_ioc_vec[vec].zvec_namecheck) { 4702 case POOL_NAME: 4703 if (pool_namecheck(zc->zc_name, NULL, NULL) != 0) 4704 error = EINVAL; 4705 if (zfs_ioc_vec[vec].zvec_pool_check) 4706 error = pool_status_check(zc->zc_name, 4707 zfs_ioc_vec[vec].zvec_namecheck); 4708 break; 4709 4710 case DATASET_NAME: 4711 if (dataset_namecheck(zc->zc_name, NULL, NULL) != 0) 4712 error = EINVAL; 4713 if (zfs_ioc_vec[vec].zvec_pool_check) 4714 error = pool_status_check(zc->zc_name, 4715 zfs_ioc_vec[vec].zvec_namecheck); 4716 break; 4717 4718 case NO_NAME: 4719 break; 4720 } 4721 } 4722 4723 if (error == 0) 4724 error = zfs_ioc_vec[vec].zvec_func(zc); 4725 4726 rc = ddi_copyout(zc, (void *)arg, sizeof (zfs_cmd_t), flag); 4727 if (error == 0) { 4728 if (rc != 0) 4729 error = EFAULT; 4730 if (zfs_ioc_vec[vec].zvec_his_log) 4731 zfs_log_history(zc); 4732 } 4733 4734 kmem_free(zc, sizeof (zfs_cmd_t)); 4735 return (error); 4736 } 4737 4738 static int 4739 zfs_attach(dev_info_t *dip, ddi_attach_cmd_t cmd) 4740 { 4741 if (cmd != DDI_ATTACH) 4742 return (DDI_FAILURE); 4743 4744 if (ddi_create_minor_node(dip, "zfs", S_IFCHR, 0, 4745 DDI_PSEUDO, 0) == DDI_FAILURE) 4746 return (DDI_FAILURE); 4747 4748 zfs_dip = dip; 4749 4750 ddi_report_dev(dip); 4751 4752 return (DDI_SUCCESS); 4753 } 4754 4755 static int 4756 zfs_detach(dev_info_t *dip, ddi_detach_cmd_t cmd) 4757 { 4758 if (spa_busy() || zfs_busy() || zvol_busy()) 4759 return (DDI_FAILURE); 4760 4761 if (cmd != DDI_DETACH) 4762 return (DDI_FAILURE); 4763 4764 zfs_dip = NULL; 4765 4766 ddi_prop_remove_all(dip); 4767 ddi_remove_minor_node(dip, NULL); 4768 4769 return (DDI_SUCCESS); 4770 } 4771 4772 /*ARGSUSED*/ 4773 static int 4774 zfs_info(dev_info_t *dip, ddi_info_cmd_t infocmd, void *arg, void **result) 4775 { 4776 switch (infocmd) { 4777 case DDI_INFO_DEVT2DEVINFO: 4778 *result = zfs_dip; 4779 return (DDI_SUCCESS); 4780 4781 case DDI_INFO_DEVT2INSTANCE: 4782 *result = (void *)0; 4783 return (DDI_SUCCESS); 4784 } 4785 4786 return (DDI_FAILURE); 4787 } 4788 4789 /* 4790 * OK, so this is a little weird. 4791 * 4792 * /dev/zfs is the control node, i.e. minor 0. 4793 * /dev/zvol/[r]dsk/pool/dataset are the zvols, minor > 0. 4794 * 4795 * /dev/zfs has basically nothing to do except serve up ioctls, 4796 * so most of the standard driver entry points are in zvol.c. 4797 */ 4798 static struct cb_ops zfs_cb_ops = { 4799 zfsdev_open, /* open */ 4800 zfsdev_close, /* close */ 4801 zvol_strategy, /* strategy */ 4802 nodev, /* print */ 4803 zvol_dump, /* dump */ 4804 zvol_read, /* read */ 4805 zvol_write, /* write */ 4806 zfsdev_ioctl, /* ioctl */ 4807 nodev, /* devmap */ 4808 nodev, /* mmap */ 4809 nodev, /* segmap */ 4810 nochpoll, /* poll */ 4811 ddi_prop_op, /* prop_op */ 4812 NULL, /* streamtab */ 4813 D_NEW | D_MP | D_64BIT, /* Driver compatibility flag */ 4814 CB_REV, /* version */ 4815 nodev, /* async read */ 4816 nodev, /* async write */ 4817 }; 4818 4819 static struct dev_ops zfs_dev_ops = { 4820 DEVO_REV, /* version */ 4821 0, /* refcnt */ 4822 zfs_info, /* info */ 4823 nulldev, /* identify */ 4824 nulldev, /* probe */ 4825 zfs_attach, /* attach */ 4826 zfs_detach, /* detach */ 4827 nodev, /* reset */ 4828 &zfs_cb_ops, /* driver operations */ 4829 NULL, /* no bus operations */ 4830 NULL, /* power */ 4831 ddi_quiesce_not_needed, /* quiesce */ 4832 }; 4833 4834 static struct modldrv zfs_modldrv = { 4835 &mod_driverops, 4836 "ZFS storage pool", 4837 &zfs_dev_ops 4838 }; 4839 4840 static struct modlinkage modlinkage = { 4841 MODREV_1, 4842 (void *)&zfs_modlfs, 4843 (void *)&zfs_modldrv, 4844 NULL 4845 }; 4846 4847 4848 uint_t zfs_fsyncer_key; 4849 extern uint_t rrw_tsd_key; 4850 4851 int 4852 _init(void) 4853 { 4854 int error; 4855 4856 spa_init(FREAD | FWRITE); 4857 zfs_init(); 4858 zvol_init(); 4859 4860 if ((error = mod_install(&modlinkage)) != 0) { 4861 zvol_fini(); 4862 zfs_fini(); 4863 spa_fini(); 4864 return (error); 4865 } 4866 4867 tsd_create(&zfs_fsyncer_key, NULL); 4868 tsd_create(&rrw_tsd_key, NULL); 4869 4870 error = ldi_ident_from_mod(&modlinkage, &zfs_li); 4871 ASSERT(error == 0); 4872 mutex_init(&zfs_share_lock, NULL, MUTEX_DEFAULT, NULL); 4873 4874 return (0); 4875 } 4876 4877 int 4878 _fini(void) 4879 { 4880 int error; 4881 4882 if (spa_busy() || zfs_busy() || zvol_busy() || zio_injection_enabled) 4883 return (EBUSY); 4884 4885 if ((error = mod_remove(&modlinkage)) != 0) 4886 return (error); 4887 4888 zvol_fini(); 4889 zfs_fini(); 4890 spa_fini(); 4891 if (zfs_nfsshare_inited) 4892 (void) ddi_modclose(nfs_mod); 4893 if (zfs_smbshare_inited) 4894 (void) ddi_modclose(smbsrv_mod); 4895 if (zfs_nfsshare_inited || zfs_smbshare_inited) 4896 (void) ddi_modclose(sharefs_mod); 4897 4898 tsd_destroy(&zfs_fsyncer_key); 4899 ldi_ident_release(zfs_li); 4900 zfs_li = NULL; 4901 mutex_destroy(&zfs_share_lock); 4902 4903 return (error); 4904 } 4905 4906 int 4907 _info(struct modinfo *modinfop) 4908 { 4909 return (mod_info(&modlinkage, modinfop)); 4910 } 4911