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 https://opensource.org/licenses/CDDL-1.0. 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 /* 23 * Copyright (c) 2005, 2010, Oracle and/or its affiliates. All rights reserved. 24 * Portions Copyright 2011 Martin Matuska 25 * Copyright 2015, OmniTI Computer Consulting, Inc. All rights reserved. 26 * Copyright (c) 2012 Pawel Jakub Dawidek 27 * Copyright (c) 2014, 2016 Joyent, Inc. All rights reserved. 28 * Copyright 2016 Nexenta Systems, Inc. All rights reserved. 29 * Copyright (c) 2014, Joyent, Inc. All rights reserved. 30 * Copyright (c) 2011, 2020 by Delphix. All rights reserved. 31 * Copyright (c) 2013 by Saso Kiselkov. All rights reserved. 32 * Copyright (c) 2013 Steven Hartland. All rights reserved. 33 * Copyright (c) 2014 Integros [integros.com] 34 * Copyright 2016 Toomas Soome <tsoome@me.com> 35 * Copyright (c) 2016 Actifio, Inc. All rights reserved. 36 * Copyright (c) 2018, loli10K <ezomori.nozomu@gmail.com>. All rights reserved. 37 * Copyright 2017 RackTop Systems. 38 * Copyright (c) 2017 Open-E, Inc. All Rights Reserved. 39 * Copyright (c) 2019 Datto Inc. 40 * Copyright (c) 2019, 2020 by Christian Schwarz. All rights reserved. 41 * Copyright (c) 2019, 2021, Klara Inc. 42 * Copyright (c) 2019, Allan Jude 43 */ 44 45 /* 46 * ZFS ioctls. 47 * 48 * This file handles the ioctls to /dev/zfs, used for configuring ZFS storage 49 * pools and filesystems, e.g. with /sbin/zfs and /sbin/zpool. 50 * 51 * There are two ways that we handle ioctls: the legacy way where almost 52 * all of the logic is in the ioctl callback, and the new way where most 53 * of the marshalling is handled in the common entry point, zfsdev_ioctl(). 54 * 55 * Non-legacy ioctls should be registered by calling 56 * zfs_ioctl_register() from zfs_ioctl_init(). The ioctl is invoked 57 * from userland by lzc_ioctl(). 58 * 59 * The registration arguments are as follows: 60 * 61 * const char *name 62 * The name of the ioctl. This is used for history logging. If the 63 * ioctl returns successfully (the callback returns 0), and allow_log 64 * is true, then a history log entry will be recorded with the input & 65 * output nvlists. The log entry can be printed with "zpool history -i". 66 * 67 * zfs_ioc_t ioc 68 * The ioctl request number, which userland will pass to ioctl(2). 69 * We want newer versions of libzfs and libzfs_core to run against 70 * existing zfs kernel modules (i.e. a deferred reboot after an update). 71 * Therefore the ioctl numbers cannot change from release to release. 72 * 73 * zfs_secpolicy_func_t *secpolicy 74 * This function will be called before the zfs_ioc_func_t, to 75 * determine if this operation is permitted. It should return EPERM 76 * on failure, and 0 on success. Checks include determining if the 77 * dataset is visible in this zone, and if the user has either all 78 * zfs privileges in the zone (SYS_MOUNT), or has been granted permission 79 * to do this operation on this dataset with "zfs allow". 80 * 81 * zfs_ioc_namecheck_t namecheck 82 * This specifies what to expect in the zfs_cmd_t:zc_name -- a pool 83 * name, a dataset name, or nothing. If the name is not well-formed, 84 * the ioctl will fail and the callback will not be called. 85 * Therefore, the callback can assume that the name is well-formed 86 * (e.g. is null-terminated, doesn't have more than one '@' character, 87 * doesn't have invalid characters). 88 * 89 * zfs_ioc_poolcheck_t pool_check 90 * This specifies requirements on the pool state. If the pool does 91 * not meet them (is suspended or is readonly), the ioctl will fail 92 * and the callback will not be called. If any checks are specified 93 * (i.e. it is not POOL_CHECK_NONE), namecheck must not be NO_NAME. 94 * Multiple checks can be or-ed together (e.g. POOL_CHECK_SUSPENDED | 95 * POOL_CHECK_READONLY). 96 * 97 * zfs_ioc_key_t *nvl_keys 98 * The list of expected/allowable innvl input keys. This list is used 99 * to validate the nvlist input to the ioctl. 100 * 101 * boolean_t smush_outnvlist 102 * If smush_outnvlist is true, then the output is presumed to be a 103 * list of errors, and it will be "smushed" down to fit into the 104 * caller's buffer, by removing some entries and replacing them with a 105 * single "N_MORE_ERRORS" entry indicating how many were removed. See 106 * nvlist_smush() for details. If smush_outnvlist is false, and the 107 * outnvlist does not fit into the userland-provided buffer, then the 108 * ioctl will fail with ENOMEM. 109 * 110 * zfs_ioc_func_t *func 111 * The callback function that will perform the operation. 112 * 113 * The callback should return 0 on success, or an error number on 114 * failure. If the function fails, the userland ioctl will return -1, 115 * and errno will be set to the callback's return value. The callback 116 * will be called with the following arguments: 117 * 118 * const char *name 119 * The name of the pool or dataset to operate on, from 120 * zfs_cmd_t:zc_name. The 'namecheck' argument specifies the 121 * expected type (pool, dataset, or none). 122 * 123 * nvlist_t *innvl 124 * The input nvlist, deserialized from zfs_cmd_t:zc_nvlist_src. Or 125 * NULL if no input nvlist was provided. Changes to this nvlist are 126 * ignored. If the input nvlist could not be deserialized, the 127 * ioctl will fail and the callback will not be called. 128 * 129 * nvlist_t *outnvl 130 * The output nvlist, initially empty. The callback can fill it in, 131 * and it will be returned to userland by serializing it into 132 * zfs_cmd_t:zc_nvlist_dst. If it is non-empty, and serialization 133 * fails (e.g. because the caller didn't supply a large enough 134 * buffer), then the overall ioctl will fail. See the 135 * 'smush_nvlist' argument above for additional behaviors. 136 * 137 * There are two typical uses of the output nvlist: 138 * - To return state, e.g. property values. In this case, 139 * smush_outnvlist should be false. If the buffer was not large 140 * enough, the caller will reallocate a larger buffer and try 141 * the ioctl again. 142 * 143 * - To return multiple errors from an ioctl which makes on-disk 144 * changes. In this case, smush_outnvlist should be true. 145 * Ioctls which make on-disk modifications should generally not 146 * use the outnvl if they succeed, because the caller can not 147 * distinguish between the operation failing, and 148 * deserialization failing. 149 * 150 * IOCTL Interface Errors 151 * 152 * The following ioctl input errors can be returned: 153 * ZFS_ERR_IOC_CMD_UNAVAIL the ioctl number is not supported by kernel 154 * ZFS_ERR_IOC_ARG_UNAVAIL an input argument is not supported by kernel 155 * ZFS_ERR_IOC_ARG_REQUIRED a required input argument is missing 156 * ZFS_ERR_IOC_ARG_BADTYPE an input argument has an invalid type 157 */ 158 159 #include <sys/types.h> 160 #include <sys/param.h> 161 #include <sys/errno.h> 162 #include <sys/uio_impl.h> 163 #include <sys/file.h> 164 #include <sys/kmem.h> 165 #include <sys/cmn_err.h> 166 #include <sys/stat.h> 167 #include <sys/zfs_ioctl.h> 168 #include <sys/zfs_quota.h> 169 #include <sys/zfs_vfsops.h> 170 #include <sys/zfs_znode.h> 171 #include <sys/zap.h> 172 #include <sys/spa.h> 173 #include <sys/spa_impl.h> 174 #include <sys/vdev.h> 175 #include <sys/vdev_impl.h> 176 #include <sys/dmu.h> 177 #include <sys/dsl_dir.h> 178 #include <sys/dsl_dataset.h> 179 #include <sys/dsl_prop.h> 180 #include <sys/dsl_deleg.h> 181 #include <sys/dmu_objset.h> 182 #include <sys/dmu_impl.h> 183 #include <sys/dmu_redact.h> 184 #include <sys/dmu_tx.h> 185 #include <sys/sunddi.h> 186 #include <sys/policy.h> 187 #include <sys/zone.h> 188 #include <sys/nvpair.h> 189 #include <sys/pathname.h> 190 #include <sys/fs/zfs.h> 191 #include <sys/zfs_ctldir.h> 192 #include <sys/zfs_dir.h> 193 #include <sys/zfs_onexit.h> 194 #include <sys/zvol.h> 195 #include <sys/dsl_scan.h> 196 #include <sys/fm/util.h> 197 #include <sys/dsl_crypt.h> 198 #include <sys/rrwlock.h> 199 #include <sys/zfs_file.h> 200 201 #include <sys/dmu_recv.h> 202 #include <sys/dmu_send.h> 203 #include <sys/dmu_recv.h> 204 #include <sys/dsl_destroy.h> 205 #include <sys/dsl_bookmark.h> 206 #include <sys/dsl_userhold.h> 207 #include <sys/zfeature.h> 208 #include <sys/zcp.h> 209 #include <sys/zio_checksum.h> 210 #include <sys/vdev_removal.h> 211 #include <sys/vdev_impl.h> 212 #include <sys/vdev_initialize.h> 213 #include <sys/vdev_trim.h> 214 215 #include "zfs_namecheck.h" 216 #include "zfs_prop.h" 217 #include "zfs_deleg.h" 218 #include "zfs_comutil.h" 219 220 #include <sys/lua/lua.h> 221 #include <sys/lua/lauxlib.h> 222 #include <sys/zfs_ioctl_impl.h> 223 224 kmutex_t zfsdev_state_lock; 225 static zfsdev_state_t zfsdev_state_listhead; 226 227 /* 228 * Limit maximum nvlist size. We don't want users passing in insane values 229 * for zc->zc_nvlist_src_size, since we will need to allocate that much memory. 230 * Defaults to 0=auto which is handled by platform code. 231 */ 232 uint64_t zfs_max_nvlist_src_size = 0; 233 234 /* 235 * When logging the output nvlist of an ioctl in the on-disk history, limit 236 * the logged size to this many bytes. This must be less than DMU_MAX_ACCESS. 237 * This applies primarily to zfs_ioc_channel_program(). 238 */ 239 static uint64_t zfs_history_output_max = 1024 * 1024; 240 241 uint_t zfs_allow_log_key; 242 243 /* DATA_TYPE_ANY is used when zkey_type can vary. */ 244 #define DATA_TYPE_ANY DATA_TYPE_UNKNOWN 245 246 typedef struct zfs_ioc_vec { 247 zfs_ioc_legacy_func_t *zvec_legacy_func; 248 zfs_ioc_func_t *zvec_func; 249 zfs_secpolicy_func_t *zvec_secpolicy; 250 zfs_ioc_namecheck_t zvec_namecheck; 251 boolean_t zvec_allow_log; 252 zfs_ioc_poolcheck_t zvec_pool_check; 253 boolean_t zvec_smush_outnvlist; 254 const char *zvec_name; 255 const zfs_ioc_key_t *zvec_nvl_keys; 256 size_t zvec_nvl_key_count; 257 } zfs_ioc_vec_t; 258 259 /* This array is indexed by zfs_userquota_prop_t */ 260 static const char *userquota_perms[] = { 261 ZFS_DELEG_PERM_USERUSED, 262 ZFS_DELEG_PERM_USERQUOTA, 263 ZFS_DELEG_PERM_GROUPUSED, 264 ZFS_DELEG_PERM_GROUPQUOTA, 265 ZFS_DELEG_PERM_USEROBJUSED, 266 ZFS_DELEG_PERM_USEROBJQUOTA, 267 ZFS_DELEG_PERM_GROUPOBJUSED, 268 ZFS_DELEG_PERM_GROUPOBJQUOTA, 269 ZFS_DELEG_PERM_PROJECTUSED, 270 ZFS_DELEG_PERM_PROJECTQUOTA, 271 ZFS_DELEG_PERM_PROJECTOBJUSED, 272 ZFS_DELEG_PERM_PROJECTOBJQUOTA, 273 }; 274 275 static int zfs_ioc_userspace_upgrade(zfs_cmd_t *zc); 276 static int zfs_ioc_id_quota_upgrade(zfs_cmd_t *zc); 277 static int zfs_check_settable(const char *name, nvpair_t *property, 278 cred_t *cr); 279 static int zfs_check_clearable(const char *dataset, nvlist_t *props, 280 nvlist_t **errors); 281 static int zfs_fill_zplprops_root(uint64_t, nvlist_t *, nvlist_t *, 282 boolean_t *); 283 int zfs_set_prop_nvlist(const char *, zprop_source_t, nvlist_t *, nvlist_t *); 284 static int get_nvlist(uint64_t nvl, uint64_t size, int iflag, nvlist_t **nvp); 285 286 static void 287 history_str_free(char *buf) 288 { 289 kmem_free(buf, HIS_MAX_RECORD_LEN); 290 } 291 292 static char * 293 history_str_get(zfs_cmd_t *zc) 294 { 295 char *buf; 296 297 if (zc->zc_history == 0) 298 return (NULL); 299 300 buf = kmem_alloc(HIS_MAX_RECORD_LEN, KM_SLEEP); 301 if (copyinstr((void *)(uintptr_t)zc->zc_history, 302 buf, HIS_MAX_RECORD_LEN, NULL) != 0) { 303 history_str_free(buf); 304 return (NULL); 305 } 306 307 buf[HIS_MAX_RECORD_LEN -1] = '\0'; 308 309 return (buf); 310 } 311 312 /* 313 * Return non-zero if the spa version is less than requested version. 314 */ 315 static int 316 zfs_earlier_version(const char *name, int version) 317 { 318 spa_t *spa; 319 320 if (spa_open(name, &spa, FTAG) == 0) { 321 if (spa_version(spa) < version) { 322 spa_close(spa, FTAG); 323 return (1); 324 } 325 spa_close(spa, FTAG); 326 } 327 return (0); 328 } 329 330 /* 331 * Return TRUE if the ZPL version is less than requested version. 332 */ 333 static boolean_t 334 zpl_earlier_version(const char *name, int version) 335 { 336 objset_t *os; 337 boolean_t rc = B_TRUE; 338 339 if (dmu_objset_hold(name, FTAG, &os) == 0) { 340 uint64_t zplversion; 341 342 if (dmu_objset_type(os) != DMU_OST_ZFS) { 343 dmu_objset_rele(os, FTAG); 344 return (B_TRUE); 345 } 346 /* XXX reading from non-owned objset */ 347 if (zfs_get_zplprop(os, ZFS_PROP_VERSION, &zplversion) == 0) 348 rc = zplversion < version; 349 dmu_objset_rele(os, FTAG); 350 } 351 return (rc); 352 } 353 354 static void 355 zfs_log_history(zfs_cmd_t *zc) 356 { 357 spa_t *spa; 358 char *buf; 359 360 if ((buf = history_str_get(zc)) == NULL) 361 return; 362 363 if (spa_open(zc->zc_name, &spa, FTAG) == 0) { 364 if (spa_version(spa) >= SPA_VERSION_ZPOOL_HISTORY) 365 (void) spa_history_log(spa, buf); 366 spa_close(spa, FTAG); 367 } 368 history_str_free(buf); 369 } 370 371 /* 372 * Policy for top-level read operations (list pools). Requires no privileges, 373 * and can be used in the local zone, as there is no associated dataset. 374 */ 375 static int 376 zfs_secpolicy_none(zfs_cmd_t *zc, nvlist_t *innvl, cred_t *cr) 377 { 378 (void) zc, (void) innvl, (void) cr; 379 return (0); 380 } 381 382 /* 383 * Policy for dataset read operations (list children, get statistics). Requires 384 * no privileges, but must be visible in the local zone. 385 */ 386 static int 387 zfs_secpolicy_read(zfs_cmd_t *zc, nvlist_t *innvl, cred_t *cr) 388 { 389 (void) innvl, (void) cr; 390 if (INGLOBALZONE(curproc) || 391 zone_dataset_visible(zc->zc_name, NULL)) 392 return (0); 393 394 return (SET_ERROR(ENOENT)); 395 } 396 397 static int 398 zfs_dozonecheck_impl(const char *dataset, uint64_t zoned, cred_t *cr) 399 { 400 int writable = 1; 401 402 /* 403 * The dataset must be visible by this zone -- check this first 404 * so they don't see EPERM on something they shouldn't know about. 405 */ 406 if (!INGLOBALZONE(curproc) && 407 !zone_dataset_visible(dataset, &writable)) 408 return (SET_ERROR(ENOENT)); 409 410 if (INGLOBALZONE(curproc)) { 411 /* 412 * If the fs is zoned, only root can access it from the 413 * global zone. 414 */ 415 if (secpolicy_zfs(cr) && zoned) 416 return (SET_ERROR(EPERM)); 417 } else { 418 /* 419 * If we are in a local zone, the 'zoned' property must be set. 420 */ 421 if (!zoned) 422 return (SET_ERROR(EPERM)); 423 424 /* must be writable by this zone */ 425 if (!writable) 426 return (SET_ERROR(EPERM)); 427 } 428 return (0); 429 } 430 431 static int 432 zfs_dozonecheck(const char *dataset, cred_t *cr) 433 { 434 uint64_t zoned; 435 436 if (dsl_prop_get_integer(dataset, zfs_prop_to_name(ZFS_PROP_ZONED), 437 &zoned, NULL)) 438 return (SET_ERROR(ENOENT)); 439 440 return (zfs_dozonecheck_impl(dataset, zoned, cr)); 441 } 442 443 static int 444 zfs_dozonecheck_ds(const char *dataset, dsl_dataset_t *ds, cred_t *cr) 445 { 446 uint64_t zoned; 447 448 if (dsl_prop_get_int_ds(ds, zfs_prop_to_name(ZFS_PROP_ZONED), &zoned)) 449 return (SET_ERROR(ENOENT)); 450 451 return (zfs_dozonecheck_impl(dataset, zoned, cr)); 452 } 453 454 static int 455 zfs_secpolicy_write_perms_ds(const char *name, dsl_dataset_t *ds, 456 const char *perm, cred_t *cr) 457 { 458 int error; 459 460 error = zfs_dozonecheck_ds(name, ds, cr); 461 if (error == 0) { 462 error = secpolicy_zfs(cr); 463 if (error != 0) 464 error = dsl_deleg_access_impl(ds, perm, cr); 465 } 466 return (error); 467 } 468 469 static int 470 zfs_secpolicy_write_perms(const char *name, const char *perm, cred_t *cr) 471 { 472 int error; 473 dsl_dataset_t *ds; 474 dsl_pool_t *dp; 475 476 /* 477 * First do a quick check for root in the global zone, which 478 * is allowed to do all write_perms. This ensures that zfs_ioc_* 479 * will get to handle nonexistent datasets. 480 */ 481 if (INGLOBALZONE(curproc) && secpolicy_zfs(cr) == 0) 482 return (0); 483 484 error = dsl_pool_hold(name, FTAG, &dp); 485 if (error != 0) 486 return (error); 487 488 error = dsl_dataset_hold(dp, name, FTAG, &ds); 489 if (error != 0) { 490 dsl_pool_rele(dp, FTAG); 491 return (error); 492 } 493 494 error = zfs_secpolicy_write_perms_ds(name, ds, perm, cr); 495 496 dsl_dataset_rele(ds, FTAG); 497 dsl_pool_rele(dp, FTAG); 498 return (error); 499 } 500 501 /* 502 * Policy for setting the security label property. 503 * 504 * Returns 0 for success, non-zero for access and other errors. 505 */ 506 static int 507 zfs_set_slabel_policy(const char *name, const char *strval, cred_t *cr) 508 { 509 #ifdef HAVE_MLSLABEL 510 char ds_hexsl[MAXNAMELEN]; 511 bslabel_t ds_sl, new_sl; 512 boolean_t new_default = FALSE; 513 uint64_t zoned; 514 int needed_priv = -1; 515 int error; 516 517 /* First get the existing dataset label. */ 518 error = dsl_prop_get(name, zfs_prop_to_name(ZFS_PROP_MLSLABEL), 519 1, sizeof (ds_hexsl), &ds_hexsl, NULL); 520 if (error != 0) 521 return (SET_ERROR(EPERM)); 522 523 if (strcasecmp(strval, ZFS_MLSLABEL_DEFAULT) == 0) 524 new_default = TRUE; 525 526 /* The label must be translatable */ 527 if (!new_default && (hexstr_to_label(strval, &new_sl) != 0)) 528 return (SET_ERROR(EINVAL)); 529 530 /* 531 * In a non-global zone, disallow attempts to set a label that 532 * doesn't match that of the zone; otherwise no other checks 533 * are needed. 534 */ 535 if (!INGLOBALZONE(curproc)) { 536 if (new_default || !blequal(&new_sl, CR_SL(CRED()))) 537 return (SET_ERROR(EPERM)); 538 return (0); 539 } 540 541 /* 542 * For global-zone datasets (i.e., those whose zoned property is 543 * "off", verify that the specified new label is valid for the 544 * global zone. 545 */ 546 if (dsl_prop_get_integer(name, 547 zfs_prop_to_name(ZFS_PROP_ZONED), &zoned, NULL)) 548 return (SET_ERROR(EPERM)); 549 if (!zoned) { 550 if (zfs_check_global_label(name, strval) != 0) 551 return (SET_ERROR(EPERM)); 552 } 553 554 /* 555 * If the existing dataset label is nondefault, check if the 556 * dataset is mounted (label cannot be changed while mounted). 557 * Get the zfsvfs_t; if there isn't one, then the dataset isn't 558 * mounted (or isn't a dataset, doesn't exist, ...). 559 */ 560 if (strcasecmp(ds_hexsl, ZFS_MLSLABEL_DEFAULT) != 0) { 561 objset_t *os; 562 static const char *setsl_tag = "setsl_tag"; 563 564 /* 565 * Try to own the dataset; abort if there is any error, 566 * (e.g., already mounted, in use, or other error). 567 */ 568 error = dmu_objset_own(name, DMU_OST_ZFS, B_TRUE, B_TRUE, 569 setsl_tag, &os); 570 if (error != 0) 571 return (SET_ERROR(EPERM)); 572 573 dmu_objset_disown(os, B_TRUE, setsl_tag); 574 575 if (new_default) { 576 needed_priv = PRIV_FILE_DOWNGRADE_SL; 577 goto out_check; 578 } 579 580 if (hexstr_to_label(strval, &new_sl) != 0) 581 return (SET_ERROR(EPERM)); 582 583 if (blstrictdom(&ds_sl, &new_sl)) 584 needed_priv = PRIV_FILE_DOWNGRADE_SL; 585 else if (blstrictdom(&new_sl, &ds_sl)) 586 needed_priv = PRIV_FILE_UPGRADE_SL; 587 } else { 588 /* dataset currently has a default label */ 589 if (!new_default) 590 needed_priv = PRIV_FILE_UPGRADE_SL; 591 } 592 593 out_check: 594 if (needed_priv != -1) 595 return (PRIV_POLICY(cr, needed_priv, B_FALSE, EPERM, NULL)); 596 return (0); 597 #else 598 return (SET_ERROR(ENOTSUP)); 599 #endif /* HAVE_MLSLABEL */ 600 } 601 602 static int 603 zfs_secpolicy_setprop(const char *dsname, zfs_prop_t prop, nvpair_t *propval, 604 cred_t *cr) 605 { 606 const char *strval; 607 608 /* 609 * Check permissions for special properties. 610 */ 611 switch (prop) { 612 default: 613 break; 614 case ZFS_PROP_ZONED: 615 /* 616 * Disallow setting of 'zoned' from within a local zone. 617 */ 618 if (!INGLOBALZONE(curproc)) 619 return (SET_ERROR(EPERM)); 620 break; 621 622 case ZFS_PROP_QUOTA: 623 case ZFS_PROP_FILESYSTEM_LIMIT: 624 case ZFS_PROP_SNAPSHOT_LIMIT: 625 if (!INGLOBALZONE(curproc)) { 626 uint64_t zoned; 627 char setpoint[ZFS_MAX_DATASET_NAME_LEN]; 628 /* 629 * Unprivileged users are allowed to modify the 630 * limit on things *under* (ie. contained by) 631 * the thing they own. 632 */ 633 if (dsl_prop_get_integer(dsname, 634 zfs_prop_to_name(ZFS_PROP_ZONED), &zoned, setpoint)) 635 return (SET_ERROR(EPERM)); 636 if (!zoned || strlen(dsname) <= strlen(setpoint)) 637 return (SET_ERROR(EPERM)); 638 } 639 break; 640 641 case ZFS_PROP_MLSLABEL: 642 if (!is_system_labeled()) 643 return (SET_ERROR(EPERM)); 644 645 if (nvpair_value_string(propval, &strval) == 0) { 646 int err; 647 648 err = zfs_set_slabel_policy(dsname, strval, CRED()); 649 if (err != 0) 650 return (err); 651 } 652 break; 653 } 654 655 return (zfs_secpolicy_write_perms(dsname, zfs_prop_to_name(prop), cr)); 656 } 657 658 static int 659 zfs_secpolicy_set_fsacl(zfs_cmd_t *zc, nvlist_t *innvl, cred_t *cr) 660 { 661 /* 662 * permission to set permissions will be evaluated later in 663 * dsl_deleg_can_allow() 664 */ 665 (void) innvl; 666 return (zfs_dozonecheck(zc->zc_name, cr)); 667 } 668 669 static int 670 zfs_secpolicy_rollback(zfs_cmd_t *zc, nvlist_t *innvl, cred_t *cr) 671 { 672 (void) innvl; 673 return (zfs_secpolicy_write_perms(zc->zc_name, 674 ZFS_DELEG_PERM_ROLLBACK, cr)); 675 } 676 677 static int 678 zfs_secpolicy_send(zfs_cmd_t *zc, nvlist_t *innvl, cred_t *cr) 679 { 680 (void) innvl; 681 dsl_pool_t *dp; 682 dsl_dataset_t *ds; 683 const char *cp; 684 int error; 685 686 /* 687 * Generate the current snapshot name from the given objsetid, then 688 * use that name for the secpolicy/zone checks. 689 */ 690 cp = strchr(zc->zc_name, '@'); 691 if (cp == NULL) 692 return (SET_ERROR(EINVAL)); 693 error = dsl_pool_hold(zc->zc_name, FTAG, &dp); 694 if (error != 0) 695 return (error); 696 697 error = dsl_dataset_hold_obj(dp, zc->zc_sendobj, FTAG, &ds); 698 if (error != 0) { 699 dsl_pool_rele(dp, FTAG); 700 return (error); 701 } 702 703 dsl_dataset_name(ds, zc->zc_name); 704 705 error = zfs_secpolicy_write_perms_ds(zc->zc_name, ds, 706 ZFS_DELEG_PERM_SEND, cr); 707 dsl_dataset_rele(ds, FTAG); 708 dsl_pool_rele(dp, FTAG); 709 710 return (error); 711 } 712 713 static int 714 zfs_secpolicy_send_new(zfs_cmd_t *zc, nvlist_t *innvl, cred_t *cr) 715 { 716 (void) innvl; 717 return (zfs_secpolicy_write_perms(zc->zc_name, 718 ZFS_DELEG_PERM_SEND, cr)); 719 } 720 721 static int 722 zfs_secpolicy_share(zfs_cmd_t *zc, nvlist_t *innvl, cred_t *cr) 723 { 724 (void) zc, (void) innvl, (void) cr; 725 return (SET_ERROR(ENOTSUP)); 726 } 727 728 static int 729 zfs_secpolicy_smb_acl(zfs_cmd_t *zc, nvlist_t *innvl, cred_t *cr) 730 { 731 (void) zc, (void) innvl, (void) cr; 732 return (SET_ERROR(ENOTSUP)); 733 } 734 735 static int 736 zfs_get_parent(const char *datasetname, char *parent, int parentsize) 737 { 738 char *cp; 739 740 /* 741 * Remove the @bla or /bla from the end of the name to get the parent. 742 */ 743 (void) strlcpy(parent, datasetname, parentsize); 744 cp = strrchr(parent, '@'); 745 if (cp != NULL) { 746 cp[0] = '\0'; 747 } else { 748 cp = strrchr(parent, '/'); 749 if (cp == NULL) 750 return (SET_ERROR(ENOENT)); 751 cp[0] = '\0'; 752 } 753 754 return (0); 755 } 756 757 int 758 zfs_secpolicy_destroy_perms(const char *name, cred_t *cr) 759 { 760 int error; 761 762 if ((error = zfs_secpolicy_write_perms(name, 763 ZFS_DELEG_PERM_MOUNT, cr)) != 0) 764 return (error); 765 766 return (zfs_secpolicy_write_perms(name, ZFS_DELEG_PERM_DESTROY, cr)); 767 } 768 769 static int 770 zfs_secpolicy_destroy(zfs_cmd_t *zc, nvlist_t *innvl, cred_t *cr) 771 { 772 (void) innvl; 773 return (zfs_secpolicy_destroy_perms(zc->zc_name, cr)); 774 } 775 776 /* 777 * Destroying snapshots with delegated permissions requires 778 * descendant mount and destroy permissions. 779 */ 780 static int 781 zfs_secpolicy_destroy_snaps(zfs_cmd_t *zc, nvlist_t *innvl, cred_t *cr) 782 { 783 (void) zc; 784 nvlist_t *snaps; 785 nvpair_t *pair, *nextpair; 786 int error = 0; 787 788 snaps = fnvlist_lookup_nvlist(innvl, "snaps"); 789 790 for (pair = nvlist_next_nvpair(snaps, NULL); pair != NULL; 791 pair = nextpair) { 792 nextpair = nvlist_next_nvpair(snaps, pair); 793 error = zfs_secpolicy_destroy_perms(nvpair_name(pair), cr); 794 if (error == ENOENT) { 795 /* 796 * Ignore any snapshots that don't exist (we consider 797 * them "already destroyed"). Remove the name from the 798 * nvl here in case the snapshot is created between 799 * now and when we try to destroy it (in which case 800 * we don't want to destroy it since we haven't 801 * checked for permission). 802 */ 803 fnvlist_remove_nvpair(snaps, pair); 804 error = 0; 805 } 806 if (error != 0) 807 break; 808 } 809 810 return (error); 811 } 812 813 int 814 zfs_secpolicy_rename_perms(const char *from, const char *to, cred_t *cr) 815 { 816 char parentname[ZFS_MAX_DATASET_NAME_LEN]; 817 int error; 818 819 if ((error = zfs_secpolicy_write_perms(from, 820 ZFS_DELEG_PERM_RENAME, cr)) != 0) 821 return (error); 822 823 if ((error = zfs_secpolicy_write_perms(from, 824 ZFS_DELEG_PERM_MOUNT, cr)) != 0) 825 return (error); 826 827 if ((error = zfs_get_parent(to, parentname, 828 sizeof (parentname))) != 0) 829 return (error); 830 831 if ((error = zfs_secpolicy_write_perms(parentname, 832 ZFS_DELEG_PERM_CREATE, cr)) != 0) 833 return (error); 834 835 if ((error = zfs_secpolicy_write_perms(parentname, 836 ZFS_DELEG_PERM_MOUNT, cr)) != 0) 837 return (error); 838 839 return (error); 840 } 841 842 static int 843 zfs_secpolicy_rename(zfs_cmd_t *zc, nvlist_t *innvl, cred_t *cr) 844 { 845 (void) innvl; 846 return (zfs_secpolicy_rename_perms(zc->zc_name, zc->zc_value, cr)); 847 } 848 849 static int 850 zfs_secpolicy_promote(zfs_cmd_t *zc, nvlist_t *innvl, cred_t *cr) 851 { 852 (void) innvl; 853 dsl_pool_t *dp; 854 dsl_dataset_t *clone; 855 int error; 856 857 error = zfs_secpolicy_write_perms(zc->zc_name, 858 ZFS_DELEG_PERM_PROMOTE, cr); 859 if (error != 0) 860 return (error); 861 862 error = dsl_pool_hold(zc->zc_name, FTAG, &dp); 863 if (error != 0) 864 return (error); 865 866 error = dsl_dataset_hold(dp, zc->zc_name, FTAG, &clone); 867 868 if (error == 0) { 869 char parentname[ZFS_MAX_DATASET_NAME_LEN]; 870 dsl_dataset_t *origin = NULL; 871 dsl_dir_t *dd; 872 dd = clone->ds_dir; 873 874 error = dsl_dataset_hold_obj(dd->dd_pool, 875 dsl_dir_phys(dd)->dd_origin_obj, FTAG, &origin); 876 if (error != 0) { 877 dsl_dataset_rele(clone, FTAG); 878 dsl_pool_rele(dp, FTAG); 879 return (error); 880 } 881 882 error = zfs_secpolicy_write_perms_ds(zc->zc_name, clone, 883 ZFS_DELEG_PERM_MOUNT, cr); 884 885 dsl_dataset_name(origin, parentname); 886 if (error == 0) { 887 error = zfs_secpolicy_write_perms_ds(parentname, origin, 888 ZFS_DELEG_PERM_PROMOTE, cr); 889 } 890 dsl_dataset_rele(clone, FTAG); 891 dsl_dataset_rele(origin, FTAG); 892 } 893 dsl_pool_rele(dp, FTAG); 894 return (error); 895 } 896 897 static int 898 zfs_secpolicy_recv(zfs_cmd_t *zc, nvlist_t *innvl, cred_t *cr) 899 { 900 (void) innvl; 901 int error; 902 903 if ((error = zfs_secpolicy_write_perms(zc->zc_name, 904 ZFS_DELEG_PERM_RECEIVE, cr)) != 0) 905 return (error); 906 907 if ((error = zfs_secpolicy_write_perms(zc->zc_name, 908 ZFS_DELEG_PERM_MOUNT, cr)) != 0) 909 return (error); 910 911 return (zfs_secpolicy_write_perms(zc->zc_name, 912 ZFS_DELEG_PERM_CREATE, cr)); 913 } 914 915 int 916 zfs_secpolicy_snapshot_perms(const char *name, cred_t *cr) 917 { 918 return (zfs_secpolicy_write_perms(name, 919 ZFS_DELEG_PERM_SNAPSHOT, cr)); 920 } 921 922 /* 923 * Check for permission to create each snapshot in the nvlist. 924 */ 925 static int 926 zfs_secpolicy_snapshot(zfs_cmd_t *zc, nvlist_t *innvl, cred_t *cr) 927 { 928 (void) zc; 929 nvlist_t *snaps; 930 int error = 0; 931 nvpair_t *pair; 932 933 snaps = fnvlist_lookup_nvlist(innvl, "snaps"); 934 935 for (pair = nvlist_next_nvpair(snaps, NULL); pair != NULL; 936 pair = nvlist_next_nvpair(snaps, pair)) { 937 char *name = (char *)nvpair_name(pair); 938 char *atp = strchr(name, '@'); 939 940 if (atp == NULL) { 941 error = SET_ERROR(EINVAL); 942 break; 943 } 944 *atp = '\0'; 945 error = zfs_secpolicy_snapshot_perms(name, cr); 946 *atp = '@'; 947 if (error != 0) 948 break; 949 } 950 return (error); 951 } 952 953 /* 954 * Check for permission to create each bookmark in the nvlist. 955 */ 956 static int 957 zfs_secpolicy_bookmark(zfs_cmd_t *zc, nvlist_t *innvl, cred_t *cr) 958 { 959 (void) zc; 960 int error = 0; 961 962 for (nvpair_t *pair = nvlist_next_nvpair(innvl, NULL); 963 pair != NULL; pair = nvlist_next_nvpair(innvl, pair)) { 964 char *name = (char *)nvpair_name(pair); 965 char *hashp = strchr(name, '#'); 966 967 if (hashp == NULL) { 968 error = SET_ERROR(EINVAL); 969 break; 970 } 971 *hashp = '\0'; 972 error = zfs_secpolicy_write_perms(name, 973 ZFS_DELEG_PERM_BOOKMARK, cr); 974 *hashp = '#'; 975 if (error != 0) 976 break; 977 } 978 return (error); 979 } 980 981 static int 982 zfs_secpolicy_destroy_bookmarks(zfs_cmd_t *zc, nvlist_t *innvl, cred_t *cr) 983 { 984 (void) zc; 985 nvpair_t *pair, *nextpair; 986 int error = 0; 987 988 for (pair = nvlist_next_nvpair(innvl, NULL); pair != NULL; 989 pair = nextpair) { 990 char *name = (char *)nvpair_name(pair); 991 char *hashp = strchr(name, '#'); 992 nextpair = nvlist_next_nvpair(innvl, pair); 993 994 if (hashp == NULL) { 995 error = SET_ERROR(EINVAL); 996 break; 997 } 998 999 *hashp = '\0'; 1000 error = zfs_secpolicy_write_perms(name, 1001 ZFS_DELEG_PERM_DESTROY, cr); 1002 *hashp = '#'; 1003 if (error == ENOENT) { 1004 /* 1005 * Ignore any filesystems that don't exist (we consider 1006 * their bookmarks "already destroyed"). Remove 1007 * the name from the nvl here in case the filesystem 1008 * is created between now and when we try to destroy 1009 * the bookmark (in which case we don't want to 1010 * destroy it since we haven't checked for permission). 1011 */ 1012 fnvlist_remove_nvpair(innvl, pair); 1013 error = 0; 1014 } 1015 if (error != 0) 1016 break; 1017 } 1018 1019 return (error); 1020 } 1021 1022 static int 1023 zfs_secpolicy_log_history(zfs_cmd_t *zc, nvlist_t *innvl, cred_t *cr) 1024 { 1025 (void) zc, (void) innvl, (void) cr; 1026 /* 1027 * Even root must have a proper TSD so that we know what pool 1028 * to log to. 1029 */ 1030 if (tsd_get(zfs_allow_log_key) == NULL) 1031 return (SET_ERROR(EPERM)); 1032 return (0); 1033 } 1034 1035 static int 1036 zfs_secpolicy_create_clone(zfs_cmd_t *zc, nvlist_t *innvl, cred_t *cr) 1037 { 1038 char parentname[ZFS_MAX_DATASET_NAME_LEN]; 1039 int error; 1040 const char *origin; 1041 1042 if ((error = zfs_get_parent(zc->zc_name, parentname, 1043 sizeof (parentname))) != 0) 1044 return (error); 1045 1046 if (nvlist_lookup_string(innvl, "origin", &origin) == 0 && 1047 (error = zfs_secpolicy_write_perms(origin, 1048 ZFS_DELEG_PERM_CLONE, cr)) != 0) 1049 return (error); 1050 1051 if ((error = zfs_secpolicy_write_perms(parentname, 1052 ZFS_DELEG_PERM_CREATE, cr)) != 0) 1053 return (error); 1054 1055 return (zfs_secpolicy_write_perms(parentname, 1056 ZFS_DELEG_PERM_MOUNT, cr)); 1057 } 1058 1059 /* 1060 * Policy for pool operations - create/destroy pools, add vdevs, etc. Requires 1061 * SYS_CONFIG privilege, which is not available in a local zone. 1062 */ 1063 int 1064 zfs_secpolicy_config(zfs_cmd_t *zc, nvlist_t *innvl, cred_t *cr) 1065 { 1066 (void) zc, (void) innvl; 1067 1068 if (secpolicy_sys_config(cr, B_FALSE) != 0) 1069 return (SET_ERROR(EPERM)); 1070 1071 return (0); 1072 } 1073 1074 /* 1075 * Policy for object to name lookups. 1076 */ 1077 static int 1078 zfs_secpolicy_diff(zfs_cmd_t *zc, nvlist_t *innvl, cred_t *cr) 1079 { 1080 (void) innvl; 1081 int error; 1082 1083 if (secpolicy_sys_config(cr, B_FALSE) == 0) 1084 return (0); 1085 1086 error = zfs_secpolicy_write_perms(zc->zc_name, ZFS_DELEG_PERM_DIFF, cr); 1087 return (error); 1088 } 1089 1090 /* 1091 * Policy for fault injection. Requires all privileges. 1092 */ 1093 static int 1094 zfs_secpolicy_inject(zfs_cmd_t *zc, nvlist_t *innvl, cred_t *cr) 1095 { 1096 (void) zc, (void) innvl; 1097 return (secpolicy_zinject(cr)); 1098 } 1099 1100 static int 1101 zfs_secpolicy_inherit_prop(zfs_cmd_t *zc, nvlist_t *innvl, cred_t *cr) 1102 { 1103 (void) innvl; 1104 zfs_prop_t prop = zfs_name_to_prop(zc->zc_value); 1105 1106 if (prop == ZPROP_USERPROP) { 1107 if (!zfs_prop_user(zc->zc_value)) 1108 return (SET_ERROR(EINVAL)); 1109 return (zfs_secpolicy_write_perms(zc->zc_name, 1110 ZFS_DELEG_PERM_USERPROP, cr)); 1111 } else { 1112 return (zfs_secpolicy_setprop(zc->zc_name, prop, 1113 NULL, cr)); 1114 } 1115 } 1116 1117 static int 1118 zfs_secpolicy_userspace_one(zfs_cmd_t *zc, nvlist_t *innvl, cred_t *cr) 1119 { 1120 int err = zfs_secpolicy_read(zc, innvl, cr); 1121 if (err) 1122 return (err); 1123 1124 if (zc->zc_objset_type >= ZFS_NUM_USERQUOTA_PROPS) 1125 return (SET_ERROR(EINVAL)); 1126 1127 if (zc->zc_value[0] == 0) { 1128 /* 1129 * They are asking about a posix uid/gid. If it's 1130 * themself, allow it. 1131 */ 1132 if (zc->zc_objset_type == ZFS_PROP_USERUSED || 1133 zc->zc_objset_type == ZFS_PROP_USERQUOTA || 1134 zc->zc_objset_type == ZFS_PROP_USEROBJUSED || 1135 zc->zc_objset_type == ZFS_PROP_USEROBJQUOTA) { 1136 if (zc->zc_guid == crgetuid(cr)) 1137 return (0); 1138 } else if (zc->zc_objset_type == ZFS_PROP_GROUPUSED || 1139 zc->zc_objset_type == ZFS_PROP_GROUPQUOTA || 1140 zc->zc_objset_type == ZFS_PROP_GROUPOBJUSED || 1141 zc->zc_objset_type == ZFS_PROP_GROUPOBJQUOTA) { 1142 if (groupmember(zc->zc_guid, cr)) 1143 return (0); 1144 } 1145 /* else is for project quota/used */ 1146 } 1147 1148 return (zfs_secpolicy_write_perms(zc->zc_name, 1149 userquota_perms[zc->zc_objset_type], cr)); 1150 } 1151 1152 static int 1153 zfs_secpolicy_userspace_many(zfs_cmd_t *zc, nvlist_t *innvl, cred_t *cr) 1154 { 1155 int err = zfs_secpolicy_read(zc, innvl, cr); 1156 if (err) 1157 return (err); 1158 1159 if (zc->zc_objset_type >= ZFS_NUM_USERQUOTA_PROPS) 1160 return (SET_ERROR(EINVAL)); 1161 1162 return (zfs_secpolicy_write_perms(zc->zc_name, 1163 userquota_perms[zc->zc_objset_type], cr)); 1164 } 1165 1166 static int 1167 zfs_secpolicy_userspace_upgrade(zfs_cmd_t *zc, nvlist_t *innvl, cred_t *cr) 1168 { 1169 (void) innvl; 1170 return (zfs_secpolicy_setprop(zc->zc_name, ZFS_PROP_VERSION, 1171 NULL, cr)); 1172 } 1173 1174 static int 1175 zfs_secpolicy_hold(zfs_cmd_t *zc, nvlist_t *innvl, cred_t *cr) 1176 { 1177 (void) zc; 1178 nvpair_t *pair; 1179 nvlist_t *holds; 1180 int error; 1181 1182 holds = fnvlist_lookup_nvlist(innvl, "holds"); 1183 1184 for (pair = nvlist_next_nvpair(holds, NULL); pair != NULL; 1185 pair = nvlist_next_nvpair(holds, pair)) { 1186 char fsname[ZFS_MAX_DATASET_NAME_LEN]; 1187 error = dmu_fsname(nvpair_name(pair), fsname); 1188 if (error != 0) 1189 return (error); 1190 error = zfs_secpolicy_write_perms(fsname, 1191 ZFS_DELEG_PERM_HOLD, cr); 1192 if (error != 0) 1193 return (error); 1194 } 1195 return (0); 1196 } 1197 1198 static int 1199 zfs_secpolicy_release(zfs_cmd_t *zc, nvlist_t *innvl, cred_t *cr) 1200 { 1201 (void) zc; 1202 nvpair_t *pair; 1203 int error; 1204 1205 for (pair = nvlist_next_nvpair(innvl, NULL); pair != NULL; 1206 pair = nvlist_next_nvpair(innvl, pair)) { 1207 char fsname[ZFS_MAX_DATASET_NAME_LEN]; 1208 error = dmu_fsname(nvpair_name(pair), fsname); 1209 if (error != 0) 1210 return (error); 1211 error = zfs_secpolicy_write_perms(fsname, 1212 ZFS_DELEG_PERM_RELEASE, cr); 1213 if (error != 0) 1214 return (error); 1215 } 1216 return (0); 1217 } 1218 1219 /* 1220 * Policy for allowing temporary snapshots to be taken or released 1221 */ 1222 static int 1223 zfs_secpolicy_tmp_snapshot(zfs_cmd_t *zc, nvlist_t *innvl, cred_t *cr) 1224 { 1225 /* 1226 * A temporary snapshot is the same as a snapshot, 1227 * hold, destroy and release all rolled into one. 1228 * Delegated diff alone is sufficient that we allow this. 1229 */ 1230 int error; 1231 1232 if (zfs_secpolicy_write_perms(zc->zc_name, 1233 ZFS_DELEG_PERM_DIFF, cr) == 0) 1234 return (0); 1235 1236 error = zfs_secpolicy_snapshot_perms(zc->zc_name, cr); 1237 1238 if (innvl != NULL) { 1239 if (error == 0) 1240 error = zfs_secpolicy_hold(zc, innvl, cr); 1241 if (error == 0) 1242 error = zfs_secpolicy_release(zc, innvl, cr); 1243 if (error == 0) 1244 error = zfs_secpolicy_destroy(zc, innvl, cr); 1245 } 1246 return (error); 1247 } 1248 1249 static int 1250 zfs_secpolicy_load_key(zfs_cmd_t *zc, nvlist_t *innvl, cred_t *cr) 1251 { 1252 return (zfs_secpolicy_write_perms(zc->zc_name, 1253 ZFS_DELEG_PERM_LOAD_KEY, cr)); 1254 } 1255 1256 static int 1257 zfs_secpolicy_change_key(zfs_cmd_t *zc, nvlist_t *innvl, cred_t *cr) 1258 { 1259 return (zfs_secpolicy_write_perms(zc->zc_name, 1260 ZFS_DELEG_PERM_CHANGE_KEY, cr)); 1261 } 1262 1263 /* 1264 * Returns the nvlist as specified by the user in the zfs_cmd_t. 1265 */ 1266 static int 1267 get_nvlist(uint64_t nvl, uint64_t size, int iflag, nvlist_t **nvp) 1268 { 1269 char *packed; 1270 int error; 1271 nvlist_t *list = NULL; 1272 1273 /* 1274 * Read in and unpack the user-supplied nvlist. 1275 */ 1276 if (size == 0) 1277 return (SET_ERROR(EINVAL)); 1278 1279 packed = vmem_alloc(size, KM_SLEEP); 1280 1281 if (ddi_copyin((void *)(uintptr_t)nvl, packed, size, iflag) != 0) { 1282 vmem_free(packed, size); 1283 return (SET_ERROR(EFAULT)); 1284 } 1285 1286 if ((error = nvlist_unpack(packed, size, &list, 0)) != 0) { 1287 vmem_free(packed, size); 1288 return (error); 1289 } 1290 1291 vmem_free(packed, size); 1292 1293 *nvp = list; 1294 return (0); 1295 } 1296 1297 /* 1298 * Reduce the size of this nvlist until it can be serialized in 'max' bytes. 1299 * Entries will be removed from the end of the nvlist, and one int32 entry 1300 * named "N_MORE_ERRORS" will be added indicating how many entries were 1301 * removed. 1302 */ 1303 static int 1304 nvlist_smush(nvlist_t *errors, size_t max) 1305 { 1306 size_t size; 1307 1308 size = fnvlist_size(errors); 1309 1310 if (size > max) { 1311 nvpair_t *more_errors; 1312 int n = 0; 1313 1314 if (max < 1024) 1315 return (SET_ERROR(ENOMEM)); 1316 1317 fnvlist_add_int32(errors, ZPROP_N_MORE_ERRORS, 0); 1318 more_errors = nvlist_prev_nvpair(errors, NULL); 1319 1320 do { 1321 nvpair_t *pair = nvlist_prev_nvpair(errors, 1322 more_errors); 1323 fnvlist_remove_nvpair(errors, pair); 1324 n++; 1325 size = fnvlist_size(errors); 1326 } while (size > max); 1327 1328 fnvlist_remove_nvpair(errors, more_errors); 1329 fnvlist_add_int32(errors, ZPROP_N_MORE_ERRORS, n); 1330 ASSERT3U(fnvlist_size(errors), <=, max); 1331 } 1332 1333 return (0); 1334 } 1335 1336 static int 1337 put_nvlist(zfs_cmd_t *zc, nvlist_t *nvl) 1338 { 1339 char *packed = NULL; 1340 int error = 0; 1341 size_t size; 1342 1343 size = fnvlist_size(nvl); 1344 1345 if (size > zc->zc_nvlist_dst_size) { 1346 error = SET_ERROR(ENOMEM); 1347 } else { 1348 packed = fnvlist_pack(nvl, &size); 1349 if (ddi_copyout(packed, (void *)(uintptr_t)zc->zc_nvlist_dst, 1350 size, zc->zc_iflags) != 0) 1351 error = SET_ERROR(EFAULT); 1352 fnvlist_pack_free(packed, size); 1353 } 1354 1355 zc->zc_nvlist_dst_size = size; 1356 zc->zc_nvlist_dst_filled = B_TRUE; 1357 return (error); 1358 } 1359 1360 int 1361 getzfsvfs_impl(objset_t *os, zfsvfs_t **zfvp) 1362 { 1363 int error = 0; 1364 if (dmu_objset_type(os) != DMU_OST_ZFS) { 1365 return (SET_ERROR(EINVAL)); 1366 } 1367 1368 mutex_enter(&os->os_user_ptr_lock); 1369 *zfvp = dmu_objset_get_user(os); 1370 /* bump s_active only when non-zero to prevent umount race */ 1371 error = zfs_vfs_ref(zfvp); 1372 mutex_exit(&os->os_user_ptr_lock); 1373 return (error); 1374 } 1375 1376 int 1377 getzfsvfs(const char *dsname, zfsvfs_t **zfvp) 1378 { 1379 objset_t *os; 1380 int error; 1381 1382 error = dmu_objset_hold(dsname, FTAG, &os); 1383 if (error != 0) 1384 return (error); 1385 1386 error = getzfsvfs_impl(os, zfvp); 1387 dmu_objset_rele(os, FTAG); 1388 return (error); 1389 } 1390 1391 /* 1392 * Find a zfsvfs_t for a mounted filesystem, or create our own, in which 1393 * case its z_sb will be NULL, and it will be opened as the owner. 1394 * If 'writer' is set, the z_teardown_lock will be held for RW_WRITER, 1395 * which prevents all inode ops from running. 1396 */ 1397 static int 1398 zfsvfs_hold(const char *name, const void *tag, zfsvfs_t **zfvp, 1399 boolean_t writer) 1400 { 1401 int error = 0; 1402 1403 if (getzfsvfs(name, zfvp) != 0) 1404 error = zfsvfs_create(name, B_FALSE, zfvp); 1405 if (error == 0) { 1406 if (writer) 1407 ZFS_TEARDOWN_ENTER_WRITE(*zfvp, tag); 1408 else 1409 ZFS_TEARDOWN_ENTER_READ(*zfvp, tag); 1410 if ((*zfvp)->z_unmounted) { 1411 /* 1412 * XXX we could probably try again, since the unmounting 1413 * thread should be just about to disassociate the 1414 * objset from the zfsvfs. 1415 */ 1416 ZFS_TEARDOWN_EXIT(*zfvp, tag); 1417 return (SET_ERROR(EBUSY)); 1418 } 1419 } 1420 return (error); 1421 } 1422 1423 static void 1424 zfsvfs_rele(zfsvfs_t *zfsvfs, const void *tag) 1425 { 1426 ZFS_TEARDOWN_EXIT(zfsvfs, tag); 1427 1428 if (zfs_vfs_held(zfsvfs)) { 1429 zfs_vfs_rele(zfsvfs); 1430 } else { 1431 dmu_objset_disown(zfsvfs->z_os, B_TRUE, zfsvfs); 1432 zfsvfs_free(zfsvfs); 1433 } 1434 } 1435 1436 static int 1437 zfs_ioc_pool_create(zfs_cmd_t *zc) 1438 { 1439 int error; 1440 nvlist_t *config, *props = NULL; 1441 nvlist_t *rootprops = NULL; 1442 nvlist_t *zplprops = NULL; 1443 dsl_crypto_params_t *dcp = NULL; 1444 const char *spa_name = zc->zc_name; 1445 boolean_t unload_wkey = B_TRUE; 1446 1447 if ((error = get_nvlist(zc->zc_nvlist_conf, zc->zc_nvlist_conf_size, 1448 zc->zc_iflags, &config))) 1449 return (error); 1450 1451 if (zc->zc_nvlist_src_size != 0 && (error = 1452 get_nvlist(zc->zc_nvlist_src, zc->zc_nvlist_src_size, 1453 zc->zc_iflags, &props))) { 1454 nvlist_free(config); 1455 return (error); 1456 } 1457 1458 if (props) { 1459 nvlist_t *nvl = NULL; 1460 nvlist_t *hidden_args = NULL; 1461 uint64_t version = SPA_VERSION; 1462 const char *tname; 1463 1464 (void) nvlist_lookup_uint64(props, 1465 zpool_prop_to_name(ZPOOL_PROP_VERSION), &version); 1466 if (!SPA_VERSION_IS_SUPPORTED(version)) { 1467 error = SET_ERROR(EINVAL); 1468 goto pool_props_bad; 1469 } 1470 (void) nvlist_lookup_nvlist(props, ZPOOL_ROOTFS_PROPS, &nvl); 1471 if (nvl) { 1472 error = nvlist_dup(nvl, &rootprops, KM_SLEEP); 1473 if (error != 0) 1474 goto pool_props_bad; 1475 (void) nvlist_remove_all(props, ZPOOL_ROOTFS_PROPS); 1476 } 1477 1478 (void) nvlist_lookup_nvlist(props, ZPOOL_HIDDEN_ARGS, 1479 &hidden_args); 1480 error = dsl_crypto_params_create_nvlist(DCP_CMD_NONE, 1481 rootprops, hidden_args, &dcp); 1482 if (error != 0) 1483 goto pool_props_bad; 1484 (void) nvlist_remove_all(props, ZPOOL_HIDDEN_ARGS); 1485 1486 VERIFY(nvlist_alloc(&zplprops, NV_UNIQUE_NAME, KM_SLEEP) == 0); 1487 error = zfs_fill_zplprops_root(version, rootprops, 1488 zplprops, NULL); 1489 if (error != 0) 1490 goto pool_props_bad; 1491 1492 if (nvlist_lookup_string(props, 1493 zpool_prop_to_name(ZPOOL_PROP_TNAME), &tname) == 0) 1494 spa_name = tname; 1495 } 1496 1497 error = spa_create(zc->zc_name, config, props, zplprops, dcp); 1498 1499 /* 1500 * Set the remaining root properties 1501 */ 1502 if (!error && (error = zfs_set_prop_nvlist(spa_name, 1503 ZPROP_SRC_LOCAL, rootprops, NULL)) != 0) { 1504 (void) spa_destroy(spa_name); 1505 unload_wkey = B_FALSE; /* spa_destroy() unloads wrapping keys */ 1506 } 1507 1508 pool_props_bad: 1509 nvlist_free(rootprops); 1510 nvlist_free(zplprops); 1511 nvlist_free(config); 1512 nvlist_free(props); 1513 dsl_crypto_params_free(dcp, unload_wkey && !!error); 1514 1515 return (error); 1516 } 1517 1518 static int 1519 zfs_ioc_pool_destroy(zfs_cmd_t *zc) 1520 { 1521 int error; 1522 zfs_log_history(zc); 1523 error = spa_destroy(zc->zc_name); 1524 1525 return (error); 1526 } 1527 1528 static int 1529 zfs_ioc_pool_import(zfs_cmd_t *zc) 1530 { 1531 nvlist_t *config, *props = NULL; 1532 uint64_t guid; 1533 int error; 1534 1535 if ((error = get_nvlist(zc->zc_nvlist_conf, zc->zc_nvlist_conf_size, 1536 zc->zc_iflags, &config)) != 0) 1537 return (error); 1538 1539 if (zc->zc_nvlist_src_size != 0 && (error = 1540 get_nvlist(zc->zc_nvlist_src, zc->zc_nvlist_src_size, 1541 zc->zc_iflags, &props))) { 1542 nvlist_free(config); 1543 return (error); 1544 } 1545 1546 if (nvlist_lookup_uint64(config, ZPOOL_CONFIG_POOL_GUID, &guid) != 0 || 1547 guid != zc->zc_guid) 1548 error = SET_ERROR(EINVAL); 1549 else 1550 error = spa_import(zc->zc_name, config, props, zc->zc_cookie); 1551 1552 if (zc->zc_nvlist_dst != 0) { 1553 int err; 1554 1555 if ((err = put_nvlist(zc, config)) != 0) 1556 error = err; 1557 } 1558 1559 nvlist_free(config); 1560 nvlist_free(props); 1561 1562 return (error); 1563 } 1564 1565 static int 1566 zfs_ioc_pool_export(zfs_cmd_t *zc) 1567 { 1568 int error; 1569 boolean_t force = (boolean_t)zc->zc_cookie; 1570 boolean_t hardforce = (boolean_t)zc->zc_guid; 1571 1572 zfs_log_history(zc); 1573 error = spa_export(zc->zc_name, NULL, force, hardforce); 1574 1575 return (error); 1576 } 1577 1578 static int 1579 zfs_ioc_pool_configs(zfs_cmd_t *zc) 1580 { 1581 nvlist_t *configs; 1582 int error; 1583 1584 error = spa_all_configs(&zc->zc_cookie, &configs); 1585 if (error) 1586 return (error); 1587 1588 error = put_nvlist(zc, configs); 1589 1590 nvlist_free(configs); 1591 1592 return (error); 1593 } 1594 1595 /* 1596 * inputs: 1597 * zc_name name of the pool 1598 * 1599 * outputs: 1600 * zc_cookie real errno 1601 * zc_nvlist_dst config nvlist 1602 * zc_nvlist_dst_size size of config nvlist 1603 */ 1604 static int 1605 zfs_ioc_pool_stats(zfs_cmd_t *zc) 1606 { 1607 nvlist_t *config; 1608 int error; 1609 int ret = 0; 1610 1611 error = spa_get_stats(zc->zc_name, &config, zc->zc_value, 1612 sizeof (zc->zc_value)); 1613 1614 if (config != NULL) { 1615 ret = put_nvlist(zc, config); 1616 nvlist_free(config); 1617 1618 /* 1619 * The config may be present even if 'error' is non-zero. 1620 * In this case we return success, and preserve the real errno 1621 * in 'zc_cookie'. 1622 */ 1623 zc->zc_cookie = error; 1624 } else { 1625 ret = error; 1626 } 1627 1628 return (ret); 1629 } 1630 1631 /* 1632 * Try to import the given pool, returning pool stats as appropriate so that 1633 * user land knows which devices are available and overall pool health. 1634 */ 1635 static int 1636 zfs_ioc_pool_tryimport(zfs_cmd_t *zc) 1637 { 1638 nvlist_t *tryconfig, *config = NULL; 1639 int error; 1640 1641 if ((error = get_nvlist(zc->zc_nvlist_conf, zc->zc_nvlist_conf_size, 1642 zc->zc_iflags, &tryconfig)) != 0) 1643 return (error); 1644 1645 config = spa_tryimport(tryconfig); 1646 1647 nvlist_free(tryconfig); 1648 1649 if (config == NULL) 1650 return (SET_ERROR(EINVAL)); 1651 1652 error = put_nvlist(zc, config); 1653 nvlist_free(config); 1654 1655 return (error); 1656 } 1657 1658 /* 1659 * inputs: 1660 * zc_name name of the pool 1661 * zc_cookie scan func (pool_scan_func_t) 1662 * zc_flags scrub pause/resume flag (pool_scrub_cmd_t) 1663 */ 1664 static int 1665 zfs_ioc_pool_scan(zfs_cmd_t *zc) 1666 { 1667 spa_t *spa; 1668 int error; 1669 1670 if (zc->zc_flags >= POOL_SCRUB_FLAGS_END) 1671 return (SET_ERROR(EINVAL)); 1672 1673 if ((error = spa_open(zc->zc_name, &spa, FTAG)) != 0) 1674 return (error); 1675 1676 if (zc->zc_flags == POOL_SCRUB_PAUSE) 1677 error = spa_scrub_pause_resume(spa, POOL_SCRUB_PAUSE); 1678 else if (zc->zc_cookie == POOL_SCAN_NONE) 1679 error = spa_scan_stop(spa); 1680 else 1681 error = spa_scan(spa, zc->zc_cookie); 1682 1683 spa_close(spa, FTAG); 1684 1685 return (error); 1686 } 1687 1688 /* 1689 * inputs: 1690 * poolname name of the pool 1691 * scan_type scan func (pool_scan_func_t) 1692 * scan_command scrub pause/resume flag (pool_scrub_cmd_t) 1693 */ 1694 static const zfs_ioc_key_t zfs_keys_pool_scrub[] = { 1695 {"scan_type", DATA_TYPE_UINT64, 0}, 1696 {"scan_command", DATA_TYPE_UINT64, 0}, 1697 }; 1698 1699 static int 1700 zfs_ioc_pool_scrub(const char *poolname, nvlist_t *innvl, nvlist_t *outnvl) 1701 { 1702 spa_t *spa; 1703 int error; 1704 uint64_t scan_type, scan_cmd; 1705 1706 if (nvlist_lookup_uint64(innvl, "scan_type", &scan_type) != 0) 1707 return (SET_ERROR(EINVAL)); 1708 if (nvlist_lookup_uint64(innvl, "scan_command", &scan_cmd) != 0) 1709 return (SET_ERROR(EINVAL)); 1710 1711 if (scan_cmd >= POOL_SCRUB_FLAGS_END) 1712 return (SET_ERROR(EINVAL)); 1713 1714 if ((error = spa_open(poolname, &spa, FTAG)) != 0) 1715 return (error); 1716 1717 if (scan_cmd == POOL_SCRUB_PAUSE) { 1718 error = spa_scrub_pause_resume(spa, POOL_SCRUB_PAUSE); 1719 } else if (scan_type == POOL_SCAN_NONE) { 1720 error = spa_scan_stop(spa); 1721 } else { 1722 error = spa_scan(spa, scan_type); 1723 } 1724 1725 spa_close(spa, FTAG); 1726 return (error); 1727 } 1728 1729 static int 1730 zfs_ioc_pool_freeze(zfs_cmd_t *zc) 1731 { 1732 spa_t *spa; 1733 int error; 1734 1735 error = spa_open(zc->zc_name, &spa, FTAG); 1736 if (error == 0) { 1737 spa_freeze(spa); 1738 spa_close(spa, FTAG); 1739 } 1740 return (error); 1741 } 1742 1743 static int 1744 zfs_ioc_pool_upgrade(zfs_cmd_t *zc) 1745 { 1746 spa_t *spa; 1747 int error; 1748 1749 if ((error = spa_open(zc->zc_name, &spa, FTAG)) != 0) 1750 return (error); 1751 1752 if (zc->zc_cookie < spa_version(spa) || 1753 !SPA_VERSION_IS_SUPPORTED(zc->zc_cookie)) { 1754 spa_close(spa, FTAG); 1755 return (SET_ERROR(EINVAL)); 1756 } 1757 1758 spa_upgrade(spa, zc->zc_cookie); 1759 spa_close(spa, FTAG); 1760 1761 return (error); 1762 } 1763 1764 static int 1765 zfs_ioc_pool_get_history(zfs_cmd_t *zc) 1766 { 1767 spa_t *spa; 1768 char *hist_buf; 1769 uint64_t size; 1770 int error; 1771 1772 if ((size = zc->zc_history_len) == 0) 1773 return (SET_ERROR(EINVAL)); 1774 1775 if ((error = spa_open(zc->zc_name, &spa, FTAG)) != 0) 1776 return (error); 1777 1778 if (spa_version(spa) < SPA_VERSION_ZPOOL_HISTORY) { 1779 spa_close(spa, FTAG); 1780 return (SET_ERROR(ENOTSUP)); 1781 } 1782 1783 hist_buf = vmem_alloc(size, KM_SLEEP); 1784 if ((error = spa_history_get(spa, &zc->zc_history_offset, 1785 &zc->zc_history_len, hist_buf)) == 0) { 1786 error = ddi_copyout(hist_buf, 1787 (void *)(uintptr_t)zc->zc_history, 1788 zc->zc_history_len, zc->zc_iflags); 1789 } 1790 1791 spa_close(spa, FTAG); 1792 vmem_free(hist_buf, size); 1793 return (error); 1794 } 1795 1796 static int 1797 zfs_ioc_pool_reguid(zfs_cmd_t *zc) 1798 { 1799 spa_t *spa; 1800 int error; 1801 1802 error = spa_open(zc->zc_name, &spa, FTAG); 1803 if (error == 0) { 1804 error = spa_change_guid(spa); 1805 spa_close(spa, FTAG); 1806 } 1807 return (error); 1808 } 1809 1810 static int 1811 zfs_ioc_dsobj_to_dsname(zfs_cmd_t *zc) 1812 { 1813 return (dsl_dsobj_to_dsname(zc->zc_name, zc->zc_obj, zc->zc_value)); 1814 } 1815 1816 /* 1817 * inputs: 1818 * zc_name name of filesystem 1819 * zc_obj object to find 1820 * 1821 * outputs: 1822 * zc_value name of object 1823 */ 1824 static int 1825 zfs_ioc_obj_to_path(zfs_cmd_t *zc) 1826 { 1827 objset_t *os; 1828 int error; 1829 1830 /* XXX reading from objset not owned */ 1831 if ((error = dmu_objset_hold_flags(zc->zc_name, B_TRUE, 1832 FTAG, &os)) != 0) 1833 return (error); 1834 if (dmu_objset_type(os) != DMU_OST_ZFS) { 1835 dmu_objset_rele_flags(os, B_TRUE, FTAG); 1836 return (SET_ERROR(EINVAL)); 1837 } 1838 error = zfs_obj_to_path(os, zc->zc_obj, zc->zc_value, 1839 sizeof (zc->zc_value)); 1840 dmu_objset_rele_flags(os, B_TRUE, FTAG); 1841 1842 return (error); 1843 } 1844 1845 /* 1846 * inputs: 1847 * zc_name name of filesystem 1848 * zc_obj object to find 1849 * 1850 * outputs: 1851 * zc_stat stats on object 1852 * zc_value path to object 1853 */ 1854 static int 1855 zfs_ioc_obj_to_stats(zfs_cmd_t *zc) 1856 { 1857 objset_t *os; 1858 int error; 1859 1860 /* XXX reading from objset not owned */ 1861 if ((error = dmu_objset_hold_flags(zc->zc_name, B_TRUE, 1862 FTAG, &os)) != 0) 1863 return (error); 1864 if (dmu_objset_type(os) != DMU_OST_ZFS) { 1865 dmu_objset_rele_flags(os, B_TRUE, FTAG); 1866 return (SET_ERROR(EINVAL)); 1867 } 1868 error = zfs_obj_to_stats(os, zc->zc_obj, &zc->zc_stat, zc->zc_value, 1869 sizeof (zc->zc_value)); 1870 dmu_objset_rele_flags(os, B_TRUE, FTAG); 1871 1872 return (error); 1873 } 1874 1875 static int 1876 zfs_ioc_vdev_add(zfs_cmd_t *zc) 1877 { 1878 spa_t *spa; 1879 int error; 1880 nvlist_t *config; 1881 1882 error = spa_open(zc->zc_name, &spa, FTAG); 1883 if (error != 0) 1884 return (error); 1885 1886 error = get_nvlist(zc->zc_nvlist_conf, zc->zc_nvlist_conf_size, 1887 zc->zc_iflags, &config); 1888 if (error == 0) { 1889 error = spa_vdev_add(spa, config); 1890 nvlist_free(config); 1891 } 1892 spa_close(spa, FTAG); 1893 return (error); 1894 } 1895 1896 /* 1897 * inputs: 1898 * zc_name name of the pool 1899 * zc_guid guid of vdev to remove 1900 * zc_cookie cancel removal 1901 */ 1902 static int 1903 zfs_ioc_vdev_remove(zfs_cmd_t *zc) 1904 { 1905 spa_t *spa; 1906 int error; 1907 1908 error = spa_open(zc->zc_name, &spa, FTAG); 1909 if (error != 0) 1910 return (error); 1911 if (zc->zc_cookie != 0) { 1912 error = spa_vdev_remove_cancel(spa); 1913 } else { 1914 error = spa_vdev_remove(spa, zc->zc_guid, B_FALSE); 1915 } 1916 spa_close(spa, FTAG); 1917 return (error); 1918 } 1919 1920 static int 1921 zfs_ioc_vdev_set_state(zfs_cmd_t *zc) 1922 { 1923 spa_t *spa; 1924 int error; 1925 vdev_state_t newstate = VDEV_STATE_UNKNOWN; 1926 1927 if ((error = spa_open(zc->zc_name, &spa, FTAG)) != 0) 1928 return (error); 1929 switch (zc->zc_cookie) { 1930 case VDEV_STATE_ONLINE: 1931 error = vdev_online(spa, zc->zc_guid, zc->zc_obj, &newstate); 1932 break; 1933 1934 case VDEV_STATE_OFFLINE: 1935 error = vdev_offline(spa, zc->zc_guid, zc->zc_obj); 1936 break; 1937 1938 case VDEV_STATE_FAULTED: 1939 if (zc->zc_obj != VDEV_AUX_ERR_EXCEEDED && 1940 zc->zc_obj != VDEV_AUX_EXTERNAL && 1941 zc->zc_obj != VDEV_AUX_EXTERNAL_PERSIST) 1942 zc->zc_obj = VDEV_AUX_ERR_EXCEEDED; 1943 1944 error = vdev_fault(spa, zc->zc_guid, zc->zc_obj); 1945 break; 1946 1947 case VDEV_STATE_DEGRADED: 1948 if (zc->zc_obj != VDEV_AUX_ERR_EXCEEDED && 1949 zc->zc_obj != VDEV_AUX_EXTERNAL) 1950 zc->zc_obj = VDEV_AUX_ERR_EXCEEDED; 1951 1952 error = vdev_degrade(spa, zc->zc_guid, zc->zc_obj); 1953 break; 1954 1955 case VDEV_STATE_REMOVED: 1956 error = vdev_remove_wanted(spa, zc->zc_guid); 1957 break; 1958 1959 default: 1960 error = SET_ERROR(EINVAL); 1961 } 1962 zc->zc_cookie = newstate; 1963 spa_close(spa, FTAG); 1964 return (error); 1965 } 1966 1967 static int 1968 zfs_ioc_vdev_attach(zfs_cmd_t *zc) 1969 { 1970 spa_t *spa; 1971 nvlist_t *config; 1972 int replacing = zc->zc_cookie; 1973 int rebuild = zc->zc_simple; 1974 int error; 1975 1976 if ((error = spa_open(zc->zc_name, &spa, FTAG)) != 0) 1977 return (error); 1978 1979 if ((error = get_nvlist(zc->zc_nvlist_conf, zc->zc_nvlist_conf_size, 1980 zc->zc_iflags, &config)) == 0) { 1981 error = spa_vdev_attach(spa, zc->zc_guid, config, replacing, 1982 rebuild); 1983 nvlist_free(config); 1984 } 1985 1986 spa_close(spa, FTAG); 1987 return (error); 1988 } 1989 1990 static int 1991 zfs_ioc_vdev_detach(zfs_cmd_t *zc) 1992 { 1993 spa_t *spa; 1994 int error; 1995 1996 if ((error = spa_open(zc->zc_name, &spa, FTAG)) != 0) 1997 return (error); 1998 1999 error = spa_vdev_detach(spa, zc->zc_guid, 0, B_FALSE); 2000 2001 spa_close(spa, FTAG); 2002 return (error); 2003 } 2004 2005 static int 2006 zfs_ioc_vdev_split(zfs_cmd_t *zc) 2007 { 2008 spa_t *spa; 2009 nvlist_t *config, *props = NULL; 2010 int error; 2011 boolean_t exp = !!(zc->zc_cookie & ZPOOL_EXPORT_AFTER_SPLIT); 2012 2013 if ((error = spa_open(zc->zc_name, &spa, FTAG)) != 0) 2014 return (error); 2015 2016 if ((error = get_nvlist(zc->zc_nvlist_conf, zc->zc_nvlist_conf_size, 2017 zc->zc_iflags, &config))) { 2018 spa_close(spa, FTAG); 2019 return (error); 2020 } 2021 2022 if (zc->zc_nvlist_src_size != 0 && (error = 2023 get_nvlist(zc->zc_nvlist_src, zc->zc_nvlist_src_size, 2024 zc->zc_iflags, &props))) { 2025 spa_close(spa, FTAG); 2026 nvlist_free(config); 2027 return (error); 2028 } 2029 2030 error = spa_vdev_split_mirror(spa, zc->zc_string, config, props, exp); 2031 2032 spa_close(spa, FTAG); 2033 2034 nvlist_free(config); 2035 nvlist_free(props); 2036 2037 return (error); 2038 } 2039 2040 static int 2041 zfs_ioc_vdev_setpath(zfs_cmd_t *zc) 2042 { 2043 spa_t *spa; 2044 const char *path = zc->zc_value; 2045 uint64_t guid = zc->zc_guid; 2046 int error; 2047 2048 error = spa_open(zc->zc_name, &spa, FTAG); 2049 if (error != 0) 2050 return (error); 2051 2052 error = spa_vdev_setpath(spa, guid, path); 2053 spa_close(spa, FTAG); 2054 return (error); 2055 } 2056 2057 static int 2058 zfs_ioc_vdev_setfru(zfs_cmd_t *zc) 2059 { 2060 spa_t *spa; 2061 const char *fru = zc->zc_value; 2062 uint64_t guid = zc->zc_guid; 2063 int error; 2064 2065 error = spa_open(zc->zc_name, &spa, FTAG); 2066 if (error != 0) 2067 return (error); 2068 2069 error = spa_vdev_setfru(spa, guid, fru); 2070 spa_close(spa, FTAG); 2071 return (error); 2072 } 2073 2074 static int 2075 zfs_ioc_objset_stats_impl(zfs_cmd_t *zc, objset_t *os) 2076 { 2077 int error = 0; 2078 nvlist_t *nv; 2079 2080 dmu_objset_fast_stat(os, &zc->zc_objset_stats); 2081 2082 if (!zc->zc_simple && zc->zc_nvlist_dst != 0 && 2083 (error = dsl_prop_get_all(os, &nv)) == 0) { 2084 dmu_objset_stats(os, nv); 2085 /* 2086 * NB: zvol_get_stats() will read the objset contents, 2087 * which we aren't supposed to do with a 2088 * DS_MODE_USER hold, because it could be 2089 * inconsistent. So this is a bit of a workaround... 2090 * XXX reading without owning 2091 */ 2092 if (!zc->zc_objset_stats.dds_inconsistent && 2093 dmu_objset_type(os) == DMU_OST_ZVOL) { 2094 error = zvol_get_stats(os, nv); 2095 if (error == EIO) { 2096 nvlist_free(nv); 2097 return (error); 2098 } 2099 VERIFY0(error); 2100 } 2101 if (error == 0) 2102 error = put_nvlist(zc, nv); 2103 nvlist_free(nv); 2104 } 2105 2106 return (error); 2107 } 2108 2109 /* 2110 * inputs: 2111 * zc_name name of filesystem 2112 * zc_nvlist_dst_size size of buffer for property nvlist 2113 * 2114 * outputs: 2115 * zc_objset_stats stats 2116 * zc_nvlist_dst property nvlist 2117 * zc_nvlist_dst_size size of property nvlist 2118 */ 2119 static int 2120 zfs_ioc_objset_stats(zfs_cmd_t *zc) 2121 { 2122 objset_t *os; 2123 int error; 2124 2125 error = dmu_objset_hold(zc->zc_name, FTAG, &os); 2126 if (error == 0) { 2127 error = zfs_ioc_objset_stats_impl(zc, os); 2128 dmu_objset_rele(os, FTAG); 2129 } 2130 2131 return (error); 2132 } 2133 2134 /* 2135 * inputs: 2136 * zc_name name of filesystem 2137 * zc_nvlist_dst_size size of buffer for property nvlist 2138 * 2139 * outputs: 2140 * zc_nvlist_dst received property nvlist 2141 * zc_nvlist_dst_size size of received property nvlist 2142 * 2143 * Gets received properties (distinct from local properties on or after 2144 * SPA_VERSION_RECVD_PROPS) for callers who want to differentiate received from 2145 * local property values. 2146 */ 2147 static int 2148 zfs_ioc_objset_recvd_props(zfs_cmd_t *zc) 2149 { 2150 int error = 0; 2151 nvlist_t *nv; 2152 2153 /* 2154 * Without this check, we would return local property values if the 2155 * caller has not already received properties on or after 2156 * SPA_VERSION_RECVD_PROPS. 2157 */ 2158 if (!dsl_prop_get_hasrecvd(zc->zc_name)) 2159 return (SET_ERROR(ENOTSUP)); 2160 2161 if (zc->zc_nvlist_dst != 0 && 2162 (error = dsl_prop_get_received(zc->zc_name, &nv)) == 0) { 2163 error = put_nvlist(zc, nv); 2164 nvlist_free(nv); 2165 } 2166 2167 return (error); 2168 } 2169 2170 static int 2171 nvl_add_zplprop(objset_t *os, nvlist_t *props, zfs_prop_t prop) 2172 { 2173 uint64_t value; 2174 int error; 2175 2176 /* 2177 * zfs_get_zplprop() will either find a value or give us 2178 * the default value (if there is one). 2179 */ 2180 if ((error = zfs_get_zplprop(os, prop, &value)) != 0) 2181 return (error); 2182 VERIFY(nvlist_add_uint64(props, zfs_prop_to_name(prop), value) == 0); 2183 return (0); 2184 } 2185 2186 /* 2187 * inputs: 2188 * zc_name name of filesystem 2189 * zc_nvlist_dst_size size of buffer for zpl property nvlist 2190 * 2191 * outputs: 2192 * zc_nvlist_dst zpl property nvlist 2193 * zc_nvlist_dst_size size of zpl property nvlist 2194 */ 2195 static int 2196 zfs_ioc_objset_zplprops(zfs_cmd_t *zc) 2197 { 2198 objset_t *os; 2199 int err; 2200 2201 /* XXX reading without owning */ 2202 if ((err = dmu_objset_hold(zc->zc_name, FTAG, &os))) 2203 return (err); 2204 2205 dmu_objset_fast_stat(os, &zc->zc_objset_stats); 2206 2207 /* 2208 * NB: nvl_add_zplprop() will read the objset contents, 2209 * which we aren't supposed to do with a DS_MODE_USER 2210 * hold, because it could be inconsistent. 2211 */ 2212 if (zc->zc_nvlist_dst != 0 && 2213 !zc->zc_objset_stats.dds_inconsistent && 2214 dmu_objset_type(os) == DMU_OST_ZFS) { 2215 nvlist_t *nv; 2216 2217 VERIFY(nvlist_alloc(&nv, NV_UNIQUE_NAME, KM_SLEEP) == 0); 2218 if ((err = nvl_add_zplprop(os, nv, ZFS_PROP_VERSION)) == 0 && 2219 (err = nvl_add_zplprop(os, nv, ZFS_PROP_NORMALIZE)) == 0 && 2220 (err = nvl_add_zplprop(os, nv, ZFS_PROP_UTF8ONLY)) == 0 && 2221 (err = nvl_add_zplprop(os, nv, ZFS_PROP_CASE)) == 0) 2222 err = put_nvlist(zc, nv); 2223 nvlist_free(nv); 2224 } else { 2225 err = SET_ERROR(ENOENT); 2226 } 2227 dmu_objset_rele(os, FTAG); 2228 return (err); 2229 } 2230 2231 /* 2232 * inputs: 2233 * zc_name name of filesystem 2234 * zc_cookie zap cursor 2235 * zc_nvlist_dst_size size of buffer for property nvlist 2236 * 2237 * outputs: 2238 * zc_name name of next filesystem 2239 * zc_cookie zap cursor 2240 * zc_objset_stats stats 2241 * zc_nvlist_dst property nvlist 2242 * zc_nvlist_dst_size size of property nvlist 2243 */ 2244 static int 2245 zfs_ioc_dataset_list_next(zfs_cmd_t *zc) 2246 { 2247 objset_t *os; 2248 int error; 2249 char *p; 2250 size_t orig_len = strlen(zc->zc_name); 2251 2252 top: 2253 if ((error = dmu_objset_hold(zc->zc_name, FTAG, &os))) { 2254 if (error == ENOENT) 2255 error = SET_ERROR(ESRCH); 2256 return (error); 2257 } 2258 2259 p = strrchr(zc->zc_name, '/'); 2260 if (p == NULL || p[1] != '\0') 2261 (void) strlcat(zc->zc_name, "/", sizeof (zc->zc_name)); 2262 p = zc->zc_name + strlen(zc->zc_name); 2263 2264 do { 2265 error = dmu_dir_list_next(os, 2266 sizeof (zc->zc_name) - (p - zc->zc_name), p, 2267 NULL, &zc->zc_cookie); 2268 if (error == ENOENT) 2269 error = SET_ERROR(ESRCH); 2270 } while (error == 0 && zfs_dataset_name_hidden(zc->zc_name)); 2271 dmu_objset_rele(os, FTAG); 2272 2273 /* 2274 * If it's an internal dataset (ie. with a '$' in its name), 2275 * don't try to get stats for it, otherwise we'll return ENOENT. 2276 */ 2277 if (error == 0 && strchr(zc->zc_name, '$') == NULL) { 2278 error = zfs_ioc_objset_stats(zc); /* fill in the stats */ 2279 if (error == ENOENT) { 2280 /* We lost a race with destroy, get the next one. */ 2281 zc->zc_name[orig_len] = '\0'; 2282 goto top; 2283 } 2284 } 2285 return (error); 2286 } 2287 2288 /* 2289 * inputs: 2290 * zc_name name of filesystem 2291 * zc_cookie zap cursor 2292 * zc_nvlist_src iteration range nvlist 2293 * zc_nvlist_src_size size of iteration range nvlist 2294 * 2295 * outputs: 2296 * zc_name name of next snapshot 2297 * zc_objset_stats stats 2298 * zc_nvlist_dst property nvlist 2299 * zc_nvlist_dst_size size of property nvlist 2300 */ 2301 static int 2302 zfs_ioc_snapshot_list_next(zfs_cmd_t *zc) 2303 { 2304 int error; 2305 objset_t *os, *ossnap; 2306 dsl_dataset_t *ds; 2307 uint64_t min_txg = 0, max_txg = 0; 2308 2309 if (zc->zc_nvlist_src_size != 0) { 2310 nvlist_t *props = NULL; 2311 error = get_nvlist(zc->zc_nvlist_src, zc->zc_nvlist_src_size, 2312 zc->zc_iflags, &props); 2313 if (error != 0) 2314 return (error); 2315 (void) nvlist_lookup_uint64(props, SNAP_ITER_MIN_TXG, 2316 &min_txg); 2317 (void) nvlist_lookup_uint64(props, SNAP_ITER_MAX_TXG, 2318 &max_txg); 2319 nvlist_free(props); 2320 } 2321 2322 error = dmu_objset_hold(zc->zc_name, FTAG, &os); 2323 if (error != 0) { 2324 return (error == ENOENT ? SET_ERROR(ESRCH) : error); 2325 } 2326 2327 /* 2328 * A dataset name of maximum length cannot have any snapshots, 2329 * so exit immediately. 2330 */ 2331 if (strlcat(zc->zc_name, "@", sizeof (zc->zc_name)) >= 2332 ZFS_MAX_DATASET_NAME_LEN) { 2333 dmu_objset_rele(os, FTAG); 2334 return (SET_ERROR(ESRCH)); 2335 } 2336 2337 while (error == 0) { 2338 if (issig(JUSTLOOKING) && issig(FORREAL)) { 2339 error = SET_ERROR(EINTR); 2340 break; 2341 } 2342 2343 error = dmu_snapshot_list_next(os, 2344 sizeof (zc->zc_name) - strlen(zc->zc_name), 2345 zc->zc_name + strlen(zc->zc_name), &zc->zc_obj, 2346 &zc->zc_cookie, NULL); 2347 if (error == ENOENT) { 2348 error = SET_ERROR(ESRCH); 2349 break; 2350 } else if (error != 0) { 2351 break; 2352 } 2353 2354 error = dsl_dataset_hold_obj(dmu_objset_pool(os), zc->zc_obj, 2355 FTAG, &ds); 2356 if (error != 0) 2357 break; 2358 2359 if ((min_txg != 0 && dsl_get_creationtxg(ds) < min_txg) || 2360 (max_txg != 0 && dsl_get_creationtxg(ds) > max_txg)) { 2361 dsl_dataset_rele(ds, FTAG); 2362 /* undo snapshot name append */ 2363 *(strchr(zc->zc_name, '@') + 1) = '\0'; 2364 /* skip snapshot */ 2365 continue; 2366 } 2367 2368 if (zc->zc_simple) { 2369 dsl_dataset_fast_stat(ds, &zc->zc_objset_stats); 2370 dsl_dataset_rele(ds, FTAG); 2371 break; 2372 } 2373 2374 if ((error = dmu_objset_from_ds(ds, &ossnap)) != 0) { 2375 dsl_dataset_rele(ds, FTAG); 2376 break; 2377 } 2378 if ((error = zfs_ioc_objset_stats_impl(zc, ossnap)) != 0) { 2379 dsl_dataset_rele(ds, FTAG); 2380 break; 2381 } 2382 dsl_dataset_rele(ds, FTAG); 2383 break; 2384 } 2385 2386 dmu_objset_rele(os, FTAG); 2387 /* if we failed, undo the @ that we tacked on to zc_name */ 2388 if (error != 0) 2389 *strchr(zc->zc_name, '@') = '\0'; 2390 return (error); 2391 } 2392 2393 static int 2394 zfs_prop_set_userquota(const char *dsname, nvpair_t *pair) 2395 { 2396 const char *propname = nvpair_name(pair); 2397 uint64_t *valary; 2398 unsigned int vallen; 2399 const char *dash, *domain; 2400 zfs_userquota_prop_t type; 2401 uint64_t rid; 2402 uint64_t quota; 2403 zfsvfs_t *zfsvfs; 2404 int err; 2405 2406 if (nvpair_type(pair) == DATA_TYPE_NVLIST) { 2407 nvlist_t *attrs; 2408 VERIFY(nvpair_value_nvlist(pair, &attrs) == 0); 2409 if (nvlist_lookup_nvpair(attrs, ZPROP_VALUE, 2410 &pair) != 0) 2411 return (SET_ERROR(EINVAL)); 2412 } 2413 2414 /* 2415 * A correctly constructed propname is encoded as 2416 * userquota@<rid>-<domain>. 2417 */ 2418 if ((dash = strchr(propname, '-')) == NULL || 2419 nvpair_value_uint64_array(pair, &valary, &vallen) != 0 || 2420 vallen != 3) 2421 return (SET_ERROR(EINVAL)); 2422 2423 domain = dash + 1; 2424 type = valary[0]; 2425 rid = valary[1]; 2426 quota = valary[2]; 2427 2428 err = zfsvfs_hold(dsname, FTAG, &zfsvfs, B_FALSE); 2429 if (err == 0) { 2430 err = zfs_set_userquota(zfsvfs, type, domain, rid, quota); 2431 zfsvfs_rele(zfsvfs, FTAG); 2432 } 2433 2434 return (err); 2435 } 2436 2437 /* 2438 * If the named property is one that has a special function to set its value, 2439 * return 0 on success and a positive error code on failure; otherwise if it is 2440 * not one of the special properties handled by this function, return -1. 2441 * 2442 * XXX: It would be better for callers of the property interface if we handled 2443 * these special cases in dsl_prop.c (in the dsl layer). 2444 */ 2445 static int 2446 zfs_prop_set_special(const char *dsname, zprop_source_t source, 2447 nvpair_t *pair) 2448 { 2449 const char *propname = nvpair_name(pair); 2450 zfs_prop_t prop = zfs_name_to_prop(propname); 2451 uint64_t intval = 0; 2452 const char *strval = NULL; 2453 int err = -1; 2454 2455 if (prop == ZPROP_USERPROP) { 2456 if (zfs_prop_userquota(propname)) 2457 return (zfs_prop_set_userquota(dsname, pair)); 2458 return (-1); 2459 } 2460 2461 if (nvpair_type(pair) == DATA_TYPE_NVLIST) { 2462 nvlist_t *attrs; 2463 VERIFY(nvpair_value_nvlist(pair, &attrs) == 0); 2464 VERIFY(nvlist_lookup_nvpair(attrs, ZPROP_VALUE, 2465 &pair) == 0); 2466 } 2467 2468 /* all special properties are numeric except for keylocation */ 2469 if (zfs_prop_get_type(prop) == PROP_TYPE_STRING) { 2470 strval = fnvpair_value_string(pair); 2471 } else { 2472 intval = fnvpair_value_uint64(pair); 2473 } 2474 2475 switch (prop) { 2476 case ZFS_PROP_QUOTA: 2477 err = dsl_dir_set_quota(dsname, source, intval); 2478 break; 2479 case ZFS_PROP_REFQUOTA: 2480 err = dsl_dataset_set_refquota(dsname, source, intval); 2481 break; 2482 case ZFS_PROP_FILESYSTEM_LIMIT: 2483 case ZFS_PROP_SNAPSHOT_LIMIT: 2484 if (intval == UINT64_MAX) { 2485 /* clearing the limit, just do it */ 2486 err = 0; 2487 } else { 2488 err = dsl_dir_activate_fs_ss_limit(dsname); 2489 } 2490 /* 2491 * Set err to -1 to force the zfs_set_prop_nvlist code down the 2492 * default path to set the value in the nvlist. 2493 */ 2494 if (err == 0) 2495 err = -1; 2496 break; 2497 case ZFS_PROP_KEYLOCATION: 2498 err = dsl_crypto_can_set_keylocation(dsname, strval); 2499 2500 /* 2501 * Set err to -1 to force the zfs_set_prop_nvlist code down the 2502 * default path to set the value in the nvlist. 2503 */ 2504 if (err == 0) 2505 err = -1; 2506 break; 2507 case ZFS_PROP_RESERVATION: 2508 err = dsl_dir_set_reservation(dsname, source, intval); 2509 break; 2510 case ZFS_PROP_REFRESERVATION: 2511 err = dsl_dataset_set_refreservation(dsname, source, intval); 2512 break; 2513 case ZFS_PROP_COMPRESSION: 2514 err = dsl_dataset_set_compression(dsname, source, intval); 2515 /* 2516 * Set err to -1 to force the zfs_set_prop_nvlist code down the 2517 * default path to set the value in the nvlist. 2518 */ 2519 if (err == 0) 2520 err = -1; 2521 break; 2522 case ZFS_PROP_VOLSIZE: 2523 err = zvol_set_volsize(dsname, intval); 2524 break; 2525 case ZFS_PROP_VOLTHREADING: 2526 err = zvol_set_volthreading(dsname, intval); 2527 /* 2528 * Set err to -1 to force the zfs_set_prop_nvlist code down the 2529 * default path to set the value in the nvlist. 2530 */ 2531 if (err == 0) 2532 err = -1; 2533 break; 2534 case ZFS_PROP_SNAPDEV: 2535 case ZFS_PROP_VOLMODE: 2536 err = zvol_set_common(dsname, prop, source, intval); 2537 break; 2538 case ZFS_PROP_READONLY: 2539 err = zvol_set_ro(dsname, intval); 2540 /* 2541 * Set err to -1 to force the zfs_set_prop_nvlist code down the 2542 * default path to set the value in the nvlist. 2543 */ 2544 if (err == 0) 2545 err = -1; 2546 break; 2547 case ZFS_PROP_VERSION: 2548 { 2549 zfsvfs_t *zfsvfs; 2550 2551 if ((err = zfsvfs_hold(dsname, FTAG, &zfsvfs, B_TRUE)) != 0) 2552 break; 2553 2554 err = zfs_set_version(zfsvfs, intval); 2555 zfsvfs_rele(zfsvfs, FTAG); 2556 2557 if (err == 0 && intval >= ZPL_VERSION_USERSPACE) { 2558 zfs_cmd_t *zc; 2559 2560 zc = kmem_zalloc(sizeof (zfs_cmd_t), KM_SLEEP); 2561 (void) strlcpy(zc->zc_name, dsname, 2562 sizeof (zc->zc_name)); 2563 (void) zfs_ioc_userspace_upgrade(zc); 2564 (void) zfs_ioc_id_quota_upgrade(zc); 2565 kmem_free(zc, sizeof (zfs_cmd_t)); 2566 } 2567 break; 2568 } 2569 default: 2570 err = -1; 2571 } 2572 2573 return (err); 2574 } 2575 2576 static boolean_t 2577 zfs_is_namespace_prop(zfs_prop_t prop) 2578 { 2579 switch (prop) { 2580 2581 case ZFS_PROP_ATIME: 2582 case ZFS_PROP_RELATIME: 2583 case ZFS_PROP_DEVICES: 2584 case ZFS_PROP_EXEC: 2585 case ZFS_PROP_SETUID: 2586 case ZFS_PROP_READONLY: 2587 case ZFS_PROP_XATTR: 2588 case ZFS_PROP_NBMAND: 2589 return (B_TRUE); 2590 2591 default: 2592 return (B_FALSE); 2593 } 2594 } 2595 2596 /* 2597 * This function is best effort. If it fails to set any of the given properties, 2598 * it continues to set as many as it can and returns the last error 2599 * encountered. If the caller provides a non-NULL errlist, it will be filled in 2600 * with the list of names of all the properties that failed along with the 2601 * corresponding error numbers. 2602 * 2603 * If every property is set successfully, zero is returned and errlist is not 2604 * modified. 2605 */ 2606 int 2607 zfs_set_prop_nvlist(const char *dsname, zprop_source_t source, nvlist_t *nvl, 2608 nvlist_t *errlist) 2609 { 2610 nvpair_t *pair; 2611 nvpair_t *propval; 2612 int rv = 0; 2613 int err; 2614 uint64_t intval; 2615 const char *strval; 2616 boolean_t should_update_mount_cache = B_FALSE; 2617 2618 nvlist_t *genericnvl = fnvlist_alloc(); 2619 nvlist_t *retrynvl = fnvlist_alloc(); 2620 retry: 2621 pair = NULL; 2622 while ((pair = nvlist_next_nvpair(nvl, pair)) != NULL) { 2623 const char *propname = nvpair_name(pair); 2624 zfs_prop_t prop = zfs_name_to_prop(propname); 2625 err = 0; 2626 2627 /* decode the property value */ 2628 propval = pair; 2629 if (nvpair_type(pair) == DATA_TYPE_NVLIST) { 2630 nvlist_t *attrs; 2631 attrs = fnvpair_value_nvlist(pair); 2632 if (nvlist_lookup_nvpair(attrs, ZPROP_VALUE, 2633 &propval) != 0) 2634 err = SET_ERROR(EINVAL); 2635 } 2636 2637 /* Validate value type */ 2638 if (err == 0 && source == ZPROP_SRC_INHERITED) { 2639 /* inherited properties are expected to be booleans */ 2640 if (nvpair_type(propval) != DATA_TYPE_BOOLEAN) 2641 err = SET_ERROR(EINVAL); 2642 } else if (err == 0 && prop == ZPROP_USERPROP) { 2643 if (zfs_prop_user(propname)) { 2644 if (nvpair_type(propval) != DATA_TYPE_STRING) 2645 err = SET_ERROR(EINVAL); 2646 } else if (zfs_prop_userquota(propname)) { 2647 if (nvpair_type(propval) != 2648 DATA_TYPE_UINT64_ARRAY) 2649 err = SET_ERROR(EINVAL); 2650 } else { 2651 err = SET_ERROR(EINVAL); 2652 } 2653 } else if (err == 0) { 2654 if (nvpair_type(propval) == DATA_TYPE_STRING) { 2655 if (zfs_prop_get_type(prop) != PROP_TYPE_STRING) 2656 err = SET_ERROR(EINVAL); 2657 } else if (nvpair_type(propval) == DATA_TYPE_UINT64) { 2658 const char *unused; 2659 2660 intval = fnvpair_value_uint64(propval); 2661 2662 switch (zfs_prop_get_type(prop)) { 2663 case PROP_TYPE_NUMBER: 2664 break; 2665 case PROP_TYPE_STRING: 2666 err = SET_ERROR(EINVAL); 2667 break; 2668 case PROP_TYPE_INDEX: 2669 if (zfs_prop_index_to_string(prop, 2670 intval, &unused) != 0) 2671 err = 2672 SET_ERROR(ZFS_ERR_BADPROP); 2673 break; 2674 default: 2675 cmn_err(CE_PANIC, 2676 "unknown property type"); 2677 } 2678 } else { 2679 err = SET_ERROR(EINVAL); 2680 } 2681 } 2682 2683 /* Validate permissions */ 2684 if (err == 0) 2685 err = zfs_check_settable(dsname, pair, CRED()); 2686 2687 if (err == 0) { 2688 if (source == ZPROP_SRC_INHERITED) 2689 err = -1; /* does not need special handling */ 2690 else 2691 err = zfs_prop_set_special(dsname, source, 2692 pair); 2693 if (err == -1) { 2694 /* 2695 * For better performance we build up a list of 2696 * properties to set in a single transaction. 2697 */ 2698 err = nvlist_add_nvpair(genericnvl, pair); 2699 } else if (err != 0 && nvl != retrynvl) { 2700 /* 2701 * This may be a spurious error caused by 2702 * receiving quota and reservation out of order. 2703 * Try again in a second pass. 2704 */ 2705 err = nvlist_add_nvpair(retrynvl, pair); 2706 } 2707 } 2708 2709 if (err != 0) { 2710 if (errlist != NULL) 2711 fnvlist_add_int32(errlist, propname, err); 2712 rv = err; 2713 } 2714 2715 if (zfs_is_namespace_prop(prop)) 2716 should_update_mount_cache = B_TRUE; 2717 } 2718 2719 if (nvl != retrynvl && !nvlist_empty(retrynvl)) { 2720 nvl = retrynvl; 2721 goto retry; 2722 } 2723 2724 if (nvlist_empty(genericnvl)) 2725 goto out; 2726 2727 /* 2728 * Try to set them all in one batch. 2729 */ 2730 err = dsl_props_set(dsname, source, genericnvl); 2731 if (err == 0) 2732 goto out; 2733 2734 /* 2735 * If batching fails, we still want to set as many properties as we 2736 * can, so try setting them individually. 2737 */ 2738 pair = NULL; 2739 while ((pair = nvlist_next_nvpair(genericnvl, pair)) != NULL) { 2740 const char *propname = nvpair_name(pair); 2741 2742 propval = pair; 2743 if (nvpair_type(pair) == DATA_TYPE_NVLIST) { 2744 nvlist_t *attrs; 2745 attrs = fnvpair_value_nvlist(pair); 2746 propval = fnvlist_lookup_nvpair(attrs, ZPROP_VALUE); 2747 } 2748 2749 if (nvpair_type(propval) == DATA_TYPE_STRING) { 2750 strval = fnvpair_value_string(propval); 2751 err = dsl_prop_set_string(dsname, propname, 2752 source, strval); 2753 } else if (nvpair_type(propval) == DATA_TYPE_BOOLEAN) { 2754 err = dsl_prop_inherit(dsname, propname, source); 2755 } else { 2756 intval = fnvpair_value_uint64(propval); 2757 err = dsl_prop_set_int(dsname, propname, source, 2758 intval); 2759 } 2760 2761 if (err != 0) { 2762 if (errlist != NULL) { 2763 fnvlist_add_int32(errlist, propname, err); 2764 } 2765 rv = err; 2766 } 2767 } 2768 2769 out: 2770 if (should_update_mount_cache) 2771 zfs_ioctl_update_mount_cache(dsname); 2772 2773 nvlist_free(genericnvl); 2774 nvlist_free(retrynvl); 2775 2776 return (rv); 2777 } 2778 2779 /* 2780 * Check that all the properties are valid user properties. 2781 */ 2782 static int 2783 zfs_check_userprops(nvlist_t *nvl) 2784 { 2785 nvpair_t *pair = NULL; 2786 2787 while ((pair = nvlist_next_nvpair(nvl, pair)) != NULL) { 2788 const char *propname = nvpair_name(pair); 2789 2790 if (!zfs_prop_user(propname) || 2791 nvpair_type(pair) != DATA_TYPE_STRING) 2792 return (SET_ERROR(EINVAL)); 2793 2794 if (strlen(propname) >= ZAP_MAXNAMELEN) 2795 return (SET_ERROR(ENAMETOOLONG)); 2796 2797 if (strlen(fnvpair_value_string(pair)) >= ZAP_MAXVALUELEN) 2798 return (SET_ERROR(E2BIG)); 2799 } 2800 return (0); 2801 } 2802 2803 static void 2804 props_skip(nvlist_t *props, nvlist_t *skipped, nvlist_t **newprops) 2805 { 2806 nvpair_t *pair; 2807 2808 VERIFY(nvlist_alloc(newprops, NV_UNIQUE_NAME, KM_SLEEP) == 0); 2809 2810 pair = NULL; 2811 while ((pair = nvlist_next_nvpair(props, pair)) != NULL) { 2812 if (nvlist_exists(skipped, nvpair_name(pair))) 2813 continue; 2814 2815 VERIFY(nvlist_add_nvpair(*newprops, pair) == 0); 2816 } 2817 } 2818 2819 static int 2820 clear_received_props(const char *dsname, nvlist_t *props, 2821 nvlist_t *skipped) 2822 { 2823 int err = 0; 2824 nvlist_t *cleared_props = NULL; 2825 props_skip(props, skipped, &cleared_props); 2826 if (!nvlist_empty(cleared_props)) { 2827 /* 2828 * Acts on local properties until the dataset has received 2829 * properties at least once on or after SPA_VERSION_RECVD_PROPS. 2830 */ 2831 zprop_source_t flags = (ZPROP_SRC_NONE | 2832 (dsl_prop_get_hasrecvd(dsname) ? ZPROP_SRC_RECEIVED : 0)); 2833 err = zfs_set_prop_nvlist(dsname, flags, cleared_props, NULL); 2834 } 2835 nvlist_free(cleared_props); 2836 return (err); 2837 } 2838 2839 /* 2840 * inputs: 2841 * zc_name name of filesystem 2842 * zc_value name of property to set 2843 * zc_nvlist_src{_size} nvlist of properties to apply 2844 * zc_cookie received properties flag 2845 * 2846 * outputs: 2847 * zc_nvlist_dst{_size} error for each unapplied received property 2848 */ 2849 static int 2850 zfs_ioc_set_prop(zfs_cmd_t *zc) 2851 { 2852 nvlist_t *nvl; 2853 boolean_t received = zc->zc_cookie; 2854 zprop_source_t source = (received ? ZPROP_SRC_RECEIVED : 2855 ZPROP_SRC_LOCAL); 2856 nvlist_t *errors; 2857 int error; 2858 2859 if ((error = get_nvlist(zc->zc_nvlist_src, zc->zc_nvlist_src_size, 2860 zc->zc_iflags, &nvl)) != 0) 2861 return (error); 2862 2863 if (received) { 2864 nvlist_t *origprops; 2865 2866 if (dsl_prop_get_received(zc->zc_name, &origprops) == 0) { 2867 (void) clear_received_props(zc->zc_name, 2868 origprops, nvl); 2869 nvlist_free(origprops); 2870 } 2871 2872 error = dsl_prop_set_hasrecvd(zc->zc_name); 2873 } 2874 2875 errors = fnvlist_alloc(); 2876 if (error == 0) 2877 error = zfs_set_prop_nvlist(zc->zc_name, source, nvl, errors); 2878 2879 if (zc->zc_nvlist_dst != 0 && errors != NULL) { 2880 (void) put_nvlist(zc, errors); 2881 } 2882 2883 nvlist_free(errors); 2884 nvlist_free(nvl); 2885 return (error); 2886 } 2887 2888 /* 2889 * inputs: 2890 * zc_name name of filesystem 2891 * zc_value name of property to inherit 2892 * zc_cookie revert to received value if TRUE 2893 * 2894 * outputs: none 2895 */ 2896 static int 2897 zfs_ioc_inherit_prop(zfs_cmd_t *zc) 2898 { 2899 const char *propname = zc->zc_value; 2900 zfs_prop_t prop = zfs_name_to_prop(propname); 2901 boolean_t received = zc->zc_cookie; 2902 zprop_source_t source = (received 2903 ? ZPROP_SRC_NONE /* revert to received value, if any */ 2904 : ZPROP_SRC_INHERITED); /* explicitly inherit */ 2905 nvlist_t *dummy; 2906 nvpair_t *pair; 2907 zprop_type_t type; 2908 int err; 2909 2910 if (!received) { 2911 /* 2912 * Only check this in the non-received case. We want to allow 2913 * 'inherit -S' to revert non-inheritable properties like quota 2914 * and reservation to the received or default values even though 2915 * they are not considered inheritable. 2916 */ 2917 if (prop != ZPROP_USERPROP && !zfs_prop_inheritable(prop)) 2918 return (SET_ERROR(EINVAL)); 2919 } 2920 2921 if (prop == ZPROP_USERPROP) { 2922 if (!zfs_prop_user(propname)) 2923 return (SET_ERROR(EINVAL)); 2924 2925 type = PROP_TYPE_STRING; 2926 } else if (prop == ZFS_PROP_VOLSIZE || prop == ZFS_PROP_VERSION) { 2927 return (SET_ERROR(EINVAL)); 2928 } else { 2929 type = zfs_prop_get_type(prop); 2930 } 2931 2932 /* 2933 * zfs_prop_set_special() expects properties in the form of an 2934 * nvpair with type info. 2935 */ 2936 dummy = fnvlist_alloc(); 2937 2938 switch (type) { 2939 case PROP_TYPE_STRING: 2940 VERIFY(0 == nvlist_add_string(dummy, propname, "")); 2941 break; 2942 case PROP_TYPE_NUMBER: 2943 case PROP_TYPE_INDEX: 2944 VERIFY(0 == nvlist_add_uint64(dummy, propname, 0)); 2945 break; 2946 default: 2947 err = SET_ERROR(EINVAL); 2948 goto errout; 2949 } 2950 2951 pair = nvlist_next_nvpair(dummy, NULL); 2952 if (pair == NULL) { 2953 err = SET_ERROR(EINVAL); 2954 } else { 2955 err = zfs_prop_set_special(zc->zc_name, source, pair); 2956 if (err == -1) /* property is not "special", needs handling */ 2957 err = dsl_prop_inherit(zc->zc_name, zc->zc_value, 2958 source); 2959 } 2960 2961 errout: 2962 nvlist_free(dummy); 2963 return (err); 2964 } 2965 2966 static int 2967 zfs_ioc_pool_set_props(zfs_cmd_t *zc) 2968 { 2969 nvlist_t *props; 2970 spa_t *spa; 2971 int error; 2972 nvpair_t *pair; 2973 2974 if ((error = get_nvlist(zc->zc_nvlist_src, zc->zc_nvlist_src_size, 2975 zc->zc_iflags, &props))) 2976 return (error); 2977 2978 /* 2979 * If the only property is the configfile, then just do a spa_lookup() 2980 * to handle the faulted case. 2981 */ 2982 pair = nvlist_next_nvpair(props, NULL); 2983 if (pair != NULL && strcmp(nvpair_name(pair), 2984 zpool_prop_to_name(ZPOOL_PROP_CACHEFILE)) == 0 && 2985 nvlist_next_nvpair(props, pair) == NULL) { 2986 mutex_enter(&spa_namespace_lock); 2987 if ((spa = spa_lookup(zc->zc_name)) != NULL) { 2988 spa_configfile_set(spa, props, B_FALSE); 2989 spa_write_cachefile(spa, B_FALSE, B_TRUE, B_FALSE); 2990 } 2991 mutex_exit(&spa_namespace_lock); 2992 if (spa != NULL) { 2993 nvlist_free(props); 2994 return (0); 2995 } 2996 } 2997 2998 if ((error = spa_open(zc->zc_name, &spa, FTAG)) != 0) { 2999 nvlist_free(props); 3000 return (error); 3001 } 3002 3003 error = spa_prop_set(spa, props); 3004 3005 nvlist_free(props); 3006 spa_close(spa, FTAG); 3007 3008 return (error); 3009 } 3010 3011 static int 3012 zfs_ioc_pool_get_props(zfs_cmd_t *zc) 3013 { 3014 spa_t *spa; 3015 int error; 3016 nvlist_t *nvp = NULL; 3017 3018 if ((error = spa_open(zc->zc_name, &spa, FTAG)) != 0) { 3019 /* 3020 * If the pool is faulted, there may be properties we can still 3021 * get (such as altroot and cachefile), so attempt to get them 3022 * anyway. 3023 */ 3024 mutex_enter(&spa_namespace_lock); 3025 if ((spa = spa_lookup(zc->zc_name)) != NULL) 3026 error = spa_prop_get(spa, &nvp); 3027 mutex_exit(&spa_namespace_lock); 3028 } else { 3029 error = spa_prop_get(spa, &nvp); 3030 spa_close(spa, FTAG); 3031 } 3032 3033 if (error == 0 && zc->zc_nvlist_dst != 0) 3034 error = put_nvlist(zc, nvp); 3035 else 3036 error = SET_ERROR(EFAULT); 3037 3038 nvlist_free(nvp); 3039 return (error); 3040 } 3041 3042 /* 3043 * innvl: { 3044 * "vdevprops_set_vdev" -> guid 3045 * "vdevprops_set_props" -> { prop -> value } 3046 * } 3047 * 3048 * outnvl: propname -> error code (int32) 3049 */ 3050 static const zfs_ioc_key_t zfs_keys_vdev_set_props[] = { 3051 {ZPOOL_VDEV_PROPS_SET_VDEV, DATA_TYPE_UINT64, 0}, 3052 {ZPOOL_VDEV_PROPS_SET_PROPS, DATA_TYPE_NVLIST, 0} 3053 }; 3054 3055 static int 3056 zfs_ioc_vdev_set_props(const char *poolname, nvlist_t *innvl, nvlist_t *outnvl) 3057 { 3058 spa_t *spa; 3059 int error; 3060 vdev_t *vd; 3061 uint64_t vdev_guid; 3062 3063 /* Early validation */ 3064 if (nvlist_lookup_uint64(innvl, ZPOOL_VDEV_PROPS_SET_VDEV, 3065 &vdev_guid) != 0) 3066 return (SET_ERROR(EINVAL)); 3067 3068 if (outnvl == NULL) 3069 return (SET_ERROR(EINVAL)); 3070 3071 if ((error = spa_open(poolname, &spa, FTAG)) != 0) 3072 return (error); 3073 3074 ASSERT(spa_writeable(spa)); 3075 3076 if ((vd = spa_lookup_by_guid(spa, vdev_guid, B_TRUE)) == NULL) { 3077 spa_close(spa, FTAG); 3078 return (SET_ERROR(ENOENT)); 3079 } 3080 3081 error = vdev_prop_set(vd, innvl, outnvl); 3082 3083 spa_close(spa, FTAG); 3084 3085 return (error); 3086 } 3087 3088 /* 3089 * innvl: { 3090 * "vdevprops_get_vdev" -> guid 3091 * (optional) "vdevprops_get_props" -> { propname -> propid } 3092 * } 3093 * 3094 * outnvl: propname -> value 3095 */ 3096 static const zfs_ioc_key_t zfs_keys_vdev_get_props[] = { 3097 {ZPOOL_VDEV_PROPS_GET_VDEV, DATA_TYPE_UINT64, 0}, 3098 {ZPOOL_VDEV_PROPS_GET_PROPS, DATA_TYPE_NVLIST, ZK_OPTIONAL} 3099 }; 3100 3101 static int 3102 zfs_ioc_vdev_get_props(const char *poolname, nvlist_t *innvl, nvlist_t *outnvl) 3103 { 3104 spa_t *spa; 3105 int error; 3106 vdev_t *vd; 3107 uint64_t vdev_guid; 3108 3109 /* Early validation */ 3110 if (nvlist_lookup_uint64(innvl, ZPOOL_VDEV_PROPS_GET_VDEV, 3111 &vdev_guid) != 0) 3112 return (SET_ERROR(EINVAL)); 3113 3114 if (outnvl == NULL) 3115 return (SET_ERROR(EINVAL)); 3116 3117 if ((error = spa_open(poolname, &spa, FTAG)) != 0) 3118 return (error); 3119 3120 if ((vd = spa_lookup_by_guid(spa, vdev_guid, B_TRUE)) == NULL) { 3121 spa_close(spa, FTAG); 3122 return (SET_ERROR(ENOENT)); 3123 } 3124 3125 error = vdev_prop_get(vd, innvl, outnvl); 3126 3127 spa_close(spa, FTAG); 3128 3129 return (error); 3130 } 3131 3132 /* 3133 * inputs: 3134 * zc_name name of filesystem 3135 * zc_nvlist_src{_size} nvlist of delegated permissions 3136 * zc_perm_action allow/unallow flag 3137 * 3138 * outputs: none 3139 */ 3140 static int 3141 zfs_ioc_set_fsacl(zfs_cmd_t *zc) 3142 { 3143 int error; 3144 nvlist_t *fsaclnv = NULL; 3145 3146 if ((error = get_nvlist(zc->zc_nvlist_src, zc->zc_nvlist_src_size, 3147 zc->zc_iflags, &fsaclnv)) != 0) 3148 return (error); 3149 3150 /* 3151 * Verify nvlist is constructed correctly 3152 */ 3153 if (zfs_deleg_verify_nvlist(fsaclnv) != 0) { 3154 nvlist_free(fsaclnv); 3155 return (SET_ERROR(EINVAL)); 3156 } 3157 3158 /* 3159 * If we don't have PRIV_SYS_MOUNT, then validate 3160 * that user is allowed to hand out each permission in 3161 * the nvlist(s) 3162 */ 3163 3164 error = secpolicy_zfs(CRED()); 3165 if (error != 0) { 3166 if (zc->zc_perm_action == B_FALSE) { 3167 error = dsl_deleg_can_allow(zc->zc_name, 3168 fsaclnv, CRED()); 3169 } else { 3170 error = dsl_deleg_can_unallow(zc->zc_name, 3171 fsaclnv, CRED()); 3172 } 3173 } 3174 3175 if (error == 0) 3176 error = dsl_deleg_set(zc->zc_name, fsaclnv, zc->zc_perm_action); 3177 3178 nvlist_free(fsaclnv); 3179 return (error); 3180 } 3181 3182 /* 3183 * inputs: 3184 * zc_name name of filesystem 3185 * 3186 * outputs: 3187 * zc_nvlist_src{_size} nvlist of delegated permissions 3188 */ 3189 static int 3190 zfs_ioc_get_fsacl(zfs_cmd_t *zc) 3191 { 3192 nvlist_t *nvp; 3193 int error; 3194 3195 if ((error = dsl_deleg_get(zc->zc_name, &nvp)) == 0) { 3196 error = put_nvlist(zc, nvp); 3197 nvlist_free(nvp); 3198 } 3199 3200 return (error); 3201 } 3202 3203 static void 3204 zfs_create_cb(objset_t *os, void *arg, cred_t *cr, dmu_tx_t *tx) 3205 { 3206 zfs_creat_t *zct = arg; 3207 3208 zfs_create_fs(os, cr, zct->zct_zplprops, tx); 3209 } 3210 3211 #define ZFS_PROP_UNDEFINED ((uint64_t)-1) 3212 3213 /* 3214 * inputs: 3215 * os parent objset pointer (NULL if root fs) 3216 * fuids_ok fuids allowed in this version of the spa? 3217 * sa_ok SAs allowed in this version of the spa? 3218 * createprops list of properties requested by creator 3219 * 3220 * outputs: 3221 * zplprops values for the zplprops we attach to the master node object 3222 * is_ci true if requested file system will be purely case-insensitive 3223 * 3224 * Determine the settings for utf8only, normalization and 3225 * casesensitivity. Specific values may have been requested by the 3226 * creator and/or we can inherit values from the parent dataset. If 3227 * the file system is of too early a vintage, a creator can not 3228 * request settings for these properties, even if the requested 3229 * setting is the default value. We don't actually want to create dsl 3230 * properties for these, so remove them from the source nvlist after 3231 * processing. 3232 */ 3233 static int 3234 zfs_fill_zplprops_impl(objset_t *os, uint64_t zplver, 3235 boolean_t fuids_ok, boolean_t sa_ok, nvlist_t *createprops, 3236 nvlist_t *zplprops, boolean_t *is_ci) 3237 { 3238 uint64_t sense = ZFS_PROP_UNDEFINED; 3239 uint64_t norm = ZFS_PROP_UNDEFINED; 3240 uint64_t u8 = ZFS_PROP_UNDEFINED; 3241 int error; 3242 3243 ASSERT(zplprops != NULL); 3244 3245 /* parent dataset must be a filesystem */ 3246 if (os != NULL && os->os_phys->os_type != DMU_OST_ZFS) 3247 return (SET_ERROR(ZFS_ERR_WRONG_PARENT)); 3248 3249 /* 3250 * Pull out creator prop choices, if any. 3251 */ 3252 if (createprops) { 3253 (void) nvlist_lookup_uint64(createprops, 3254 zfs_prop_to_name(ZFS_PROP_VERSION), &zplver); 3255 (void) nvlist_lookup_uint64(createprops, 3256 zfs_prop_to_name(ZFS_PROP_NORMALIZE), &norm); 3257 (void) nvlist_remove_all(createprops, 3258 zfs_prop_to_name(ZFS_PROP_NORMALIZE)); 3259 (void) nvlist_lookup_uint64(createprops, 3260 zfs_prop_to_name(ZFS_PROP_UTF8ONLY), &u8); 3261 (void) nvlist_remove_all(createprops, 3262 zfs_prop_to_name(ZFS_PROP_UTF8ONLY)); 3263 (void) nvlist_lookup_uint64(createprops, 3264 zfs_prop_to_name(ZFS_PROP_CASE), &sense); 3265 (void) nvlist_remove_all(createprops, 3266 zfs_prop_to_name(ZFS_PROP_CASE)); 3267 } 3268 3269 /* 3270 * If the zpl version requested is whacky or the file system 3271 * or pool is version is too "young" to support normalization 3272 * and the creator tried to set a value for one of the props, 3273 * error out. 3274 */ 3275 if ((zplver < ZPL_VERSION_INITIAL || zplver > ZPL_VERSION) || 3276 (zplver >= ZPL_VERSION_FUID && !fuids_ok) || 3277 (zplver >= ZPL_VERSION_SA && !sa_ok) || 3278 (zplver < ZPL_VERSION_NORMALIZATION && 3279 (norm != ZFS_PROP_UNDEFINED || u8 != ZFS_PROP_UNDEFINED || 3280 sense != ZFS_PROP_UNDEFINED))) 3281 return (SET_ERROR(ENOTSUP)); 3282 3283 /* 3284 * Put the version in the zplprops 3285 */ 3286 VERIFY(nvlist_add_uint64(zplprops, 3287 zfs_prop_to_name(ZFS_PROP_VERSION), zplver) == 0); 3288 3289 if (norm == ZFS_PROP_UNDEFINED && 3290 (error = zfs_get_zplprop(os, ZFS_PROP_NORMALIZE, &norm)) != 0) 3291 return (error); 3292 VERIFY(nvlist_add_uint64(zplprops, 3293 zfs_prop_to_name(ZFS_PROP_NORMALIZE), norm) == 0); 3294 3295 /* 3296 * If we're normalizing, names must always be valid UTF-8 strings. 3297 */ 3298 if (norm) 3299 u8 = 1; 3300 if (u8 == ZFS_PROP_UNDEFINED && 3301 (error = zfs_get_zplprop(os, ZFS_PROP_UTF8ONLY, &u8)) != 0) 3302 return (error); 3303 VERIFY(nvlist_add_uint64(zplprops, 3304 zfs_prop_to_name(ZFS_PROP_UTF8ONLY), u8) == 0); 3305 3306 if (sense == ZFS_PROP_UNDEFINED && 3307 (error = zfs_get_zplprop(os, ZFS_PROP_CASE, &sense)) != 0) 3308 return (error); 3309 VERIFY(nvlist_add_uint64(zplprops, 3310 zfs_prop_to_name(ZFS_PROP_CASE), sense) == 0); 3311 3312 if (is_ci) 3313 *is_ci = (sense == ZFS_CASE_INSENSITIVE); 3314 3315 return (0); 3316 } 3317 3318 static int 3319 zfs_fill_zplprops(const char *dataset, nvlist_t *createprops, 3320 nvlist_t *zplprops, boolean_t *is_ci) 3321 { 3322 boolean_t fuids_ok, sa_ok; 3323 uint64_t zplver = ZPL_VERSION; 3324 objset_t *os = NULL; 3325 char parentname[ZFS_MAX_DATASET_NAME_LEN]; 3326 spa_t *spa; 3327 uint64_t spa_vers; 3328 int error; 3329 3330 zfs_get_parent(dataset, parentname, sizeof (parentname)); 3331 3332 if ((error = spa_open(dataset, &spa, FTAG)) != 0) 3333 return (error); 3334 3335 spa_vers = spa_version(spa); 3336 spa_close(spa, FTAG); 3337 3338 zplver = zfs_zpl_version_map(spa_vers); 3339 fuids_ok = (zplver >= ZPL_VERSION_FUID); 3340 sa_ok = (zplver >= ZPL_VERSION_SA); 3341 3342 /* 3343 * Open parent object set so we can inherit zplprop values. 3344 */ 3345 if ((error = dmu_objset_hold(parentname, FTAG, &os)) != 0) 3346 return (error); 3347 3348 error = zfs_fill_zplprops_impl(os, zplver, fuids_ok, sa_ok, createprops, 3349 zplprops, is_ci); 3350 dmu_objset_rele(os, FTAG); 3351 return (error); 3352 } 3353 3354 static int 3355 zfs_fill_zplprops_root(uint64_t spa_vers, nvlist_t *createprops, 3356 nvlist_t *zplprops, boolean_t *is_ci) 3357 { 3358 boolean_t fuids_ok; 3359 boolean_t sa_ok; 3360 uint64_t zplver = ZPL_VERSION; 3361 int error; 3362 3363 zplver = zfs_zpl_version_map(spa_vers); 3364 fuids_ok = (zplver >= ZPL_VERSION_FUID); 3365 sa_ok = (zplver >= ZPL_VERSION_SA); 3366 3367 error = zfs_fill_zplprops_impl(NULL, zplver, fuids_ok, sa_ok, 3368 createprops, zplprops, is_ci); 3369 return (error); 3370 } 3371 3372 /* 3373 * innvl: { 3374 * "type" -> dmu_objset_type_t (int32) 3375 * (optional) "props" -> { prop -> value } 3376 * (optional) "hidden_args" -> { "wkeydata" -> value } 3377 * raw uint8_t array of encryption wrapping key data (32 bytes) 3378 * } 3379 * 3380 * outnvl: propname -> error code (int32) 3381 */ 3382 3383 static const zfs_ioc_key_t zfs_keys_create[] = { 3384 {"type", DATA_TYPE_INT32, 0}, 3385 {"props", DATA_TYPE_NVLIST, ZK_OPTIONAL}, 3386 {"hidden_args", DATA_TYPE_NVLIST, ZK_OPTIONAL}, 3387 }; 3388 3389 static int 3390 zfs_ioc_create(const char *fsname, nvlist_t *innvl, nvlist_t *outnvl) 3391 { 3392 int error = 0; 3393 zfs_creat_t zct = { 0 }; 3394 nvlist_t *nvprops = NULL; 3395 nvlist_t *hidden_args = NULL; 3396 void (*cbfunc)(objset_t *os, void *arg, cred_t *cr, dmu_tx_t *tx); 3397 dmu_objset_type_t type; 3398 boolean_t is_insensitive = B_FALSE; 3399 dsl_crypto_params_t *dcp = NULL; 3400 3401 type = (dmu_objset_type_t)fnvlist_lookup_int32(innvl, "type"); 3402 (void) nvlist_lookup_nvlist(innvl, "props", &nvprops); 3403 (void) nvlist_lookup_nvlist(innvl, ZPOOL_HIDDEN_ARGS, &hidden_args); 3404 3405 switch (type) { 3406 case DMU_OST_ZFS: 3407 cbfunc = zfs_create_cb; 3408 break; 3409 3410 case DMU_OST_ZVOL: 3411 cbfunc = zvol_create_cb; 3412 break; 3413 3414 default: 3415 cbfunc = NULL; 3416 break; 3417 } 3418 if (strchr(fsname, '@') || 3419 strchr(fsname, '%')) 3420 return (SET_ERROR(EINVAL)); 3421 3422 zct.zct_props = nvprops; 3423 3424 if (cbfunc == NULL) 3425 return (SET_ERROR(EINVAL)); 3426 3427 if (type == DMU_OST_ZVOL) { 3428 uint64_t volsize, volblocksize; 3429 3430 if (nvprops == NULL) 3431 return (SET_ERROR(EINVAL)); 3432 if (nvlist_lookup_uint64(nvprops, 3433 zfs_prop_to_name(ZFS_PROP_VOLSIZE), &volsize) != 0) 3434 return (SET_ERROR(EINVAL)); 3435 3436 if ((error = nvlist_lookup_uint64(nvprops, 3437 zfs_prop_to_name(ZFS_PROP_VOLBLOCKSIZE), 3438 &volblocksize)) != 0 && error != ENOENT) 3439 return (SET_ERROR(EINVAL)); 3440 3441 if (error != 0) 3442 volblocksize = zfs_prop_default_numeric( 3443 ZFS_PROP_VOLBLOCKSIZE); 3444 3445 if ((error = zvol_check_volblocksize(fsname, 3446 volblocksize)) != 0 || 3447 (error = zvol_check_volsize(volsize, 3448 volblocksize)) != 0) 3449 return (error); 3450 } else if (type == DMU_OST_ZFS) { 3451 int error; 3452 3453 /* 3454 * We have to have normalization and 3455 * case-folding flags correct when we do the 3456 * file system creation, so go figure them out 3457 * now. 3458 */ 3459 VERIFY(nvlist_alloc(&zct.zct_zplprops, 3460 NV_UNIQUE_NAME, KM_SLEEP) == 0); 3461 error = zfs_fill_zplprops(fsname, nvprops, 3462 zct.zct_zplprops, &is_insensitive); 3463 if (error != 0) { 3464 nvlist_free(zct.zct_zplprops); 3465 return (error); 3466 } 3467 } 3468 3469 error = dsl_crypto_params_create_nvlist(DCP_CMD_NONE, nvprops, 3470 hidden_args, &dcp); 3471 if (error != 0) { 3472 nvlist_free(zct.zct_zplprops); 3473 return (error); 3474 } 3475 3476 error = dmu_objset_create(fsname, type, 3477 is_insensitive ? DS_FLAG_CI_DATASET : 0, dcp, cbfunc, &zct); 3478 3479 nvlist_free(zct.zct_zplprops); 3480 dsl_crypto_params_free(dcp, !!error); 3481 3482 /* 3483 * It would be nice to do this atomically. 3484 */ 3485 if (error == 0) { 3486 error = zfs_set_prop_nvlist(fsname, ZPROP_SRC_LOCAL, 3487 nvprops, outnvl); 3488 if (error != 0) { 3489 spa_t *spa; 3490 int error2; 3491 3492 /* 3493 * Volumes will return EBUSY and cannot be destroyed 3494 * until all asynchronous minor handling (e.g. from 3495 * setting the volmode property) has completed. Wait for 3496 * the spa_zvol_taskq to drain then retry. 3497 */ 3498 error2 = dsl_destroy_head(fsname); 3499 while ((error2 == EBUSY) && (type == DMU_OST_ZVOL)) { 3500 error2 = spa_open(fsname, &spa, FTAG); 3501 if (error2 == 0) { 3502 taskq_wait(spa->spa_zvol_taskq); 3503 spa_close(spa, FTAG); 3504 } 3505 error2 = dsl_destroy_head(fsname); 3506 } 3507 } 3508 } 3509 return (error); 3510 } 3511 3512 /* 3513 * innvl: { 3514 * "origin" -> name of origin snapshot 3515 * (optional) "props" -> { prop -> value } 3516 * (optional) "hidden_args" -> { "wkeydata" -> value } 3517 * raw uint8_t array of encryption wrapping key data (32 bytes) 3518 * } 3519 * 3520 * outputs: 3521 * outnvl: propname -> error code (int32) 3522 */ 3523 static const zfs_ioc_key_t zfs_keys_clone[] = { 3524 {"origin", DATA_TYPE_STRING, 0}, 3525 {"props", DATA_TYPE_NVLIST, ZK_OPTIONAL}, 3526 {"hidden_args", DATA_TYPE_NVLIST, ZK_OPTIONAL}, 3527 }; 3528 3529 static int 3530 zfs_ioc_clone(const char *fsname, nvlist_t *innvl, nvlist_t *outnvl) 3531 { 3532 int error = 0; 3533 nvlist_t *nvprops = NULL; 3534 const char *origin_name; 3535 3536 origin_name = fnvlist_lookup_string(innvl, "origin"); 3537 (void) nvlist_lookup_nvlist(innvl, "props", &nvprops); 3538 3539 if (strchr(fsname, '@') || 3540 strchr(fsname, '%')) 3541 return (SET_ERROR(EINVAL)); 3542 3543 if (dataset_namecheck(origin_name, NULL, NULL) != 0) 3544 return (SET_ERROR(EINVAL)); 3545 3546 error = dmu_objset_clone(fsname, origin_name); 3547 3548 /* 3549 * It would be nice to do this atomically. 3550 */ 3551 if (error == 0) { 3552 error = zfs_set_prop_nvlist(fsname, ZPROP_SRC_LOCAL, 3553 nvprops, outnvl); 3554 if (error != 0) 3555 (void) dsl_destroy_head(fsname); 3556 } 3557 return (error); 3558 } 3559 3560 static const zfs_ioc_key_t zfs_keys_remap[] = { 3561 /* no nvl keys */ 3562 }; 3563 3564 static int 3565 zfs_ioc_remap(const char *fsname, nvlist_t *innvl, nvlist_t *outnvl) 3566 { 3567 /* This IOCTL is no longer supported. */ 3568 (void) fsname, (void) innvl, (void) outnvl; 3569 return (0); 3570 } 3571 3572 /* 3573 * innvl: { 3574 * "snaps" -> { snapshot1, snapshot2 } 3575 * (optional) "props" -> { prop -> value (string) } 3576 * } 3577 * 3578 * outnvl: snapshot -> error code (int32) 3579 */ 3580 static const zfs_ioc_key_t zfs_keys_snapshot[] = { 3581 {"snaps", DATA_TYPE_NVLIST, 0}, 3582 {"props", DATA_TYPE_NVLIST, ZK_OPTIONAL}, 3583 }; 3584 3585 static int 3586 zfs_ioc_snapshot(const char *poolname, nvlist_t *innvl, nvlist_t *outnvl) 3587 { 3588 nvlist_t *snaps; 3589 nvlist_t *props = NULL; 3590 int error, poollen; 3591 nvpair_t *pair; 3592 3593 (void) nvlist_lookup_nvlist(innvl, "props", &props); 3594 if (!nvlist_empty(props) && 3595 zfs_earlier_version(poolname, SPA_VERSION_SNAP_PROPS)) 3596 return (SET_ERROR(ENOTSUP)); 3597 if ((error = zfs_check_userprops(props)) != 0) 3598 return (error); 3599 3600 snaps = fnvlist_lookup_nvlist(innvl, "snaps"); 3601 poollen = strlen(poolname); 3602 for (pair = nvlist_next_nvpair(snaps, NULL); pair != NULL; 3603 pair = nvlist_next_nvpair(snaps, pair)) { 3604 const char *name = nvpair_name(pair); 3605 char *cp = strchr(name, '@'); 3606 3607 /* 3608 * The snap name must contain an @, and the part after it must 3609 * contain only valid characters. 3610 */ 3611 if (cp == NULL || 3612 zfs_component_namecheck(cp + 1, NULL, NULL) != 0) 3613 return (SET_ERROR(EINVAL)); 3614 3615 /* 3616 * The snap must be in the specified pool. 3617 */ 3618 if (strncmp(name, poolname, poollen) != 0 || 3619 (name[poollen] != '/' && name[poollen] != '@')) 3620 return (SET_ERROR(EXDEV)); 3621 3622 /* 3623 * Check for permission to set the properties on the fs. 3624 */ 3625 if (!nvlist_empty(props)) { 3626 *cp = '\0'; 3627 error = zfs_secpolicy_write_perms(name, 3628 ZFS_DELEG_PERM_USERPROP, CRED()); 3629 *cp = '@'; 3630 if (error != 0) 3631 return (error); 3632 } 3633 3634 /* This must be the only snap of this fs. */ 3635 for (nvpair_t *pair2 = nvlist_next_nvpair(snaps, pair); 3636 pair2 != NULL; pair2 = nvlist_next_nvpair(snaps, pair2)) { 3637 if (strncmp(name, nvpair_name(pair2), cp - name + 1) 3638 == 0) { 3639 return (SET_ERROR(EXDEV)); 3640 } 3641 } 3642 } 3643 3644 error = dsl_dataset_snapshot(snaps, props, outnvl); 3645 3646 return (error); 3647 } 3648 3649 /* 3650 * innvl: "message" -> string 3651 */ 3652 static const zfs_ioc_key_t zfs_keys_log_history[] = { 3653 {"message", DATA_TYPE_STRING, 0}, 3654 }; 3655 3656 static int 3657 zfs_ioc_log_history(const char *unused, nvlist_t *innvl, nvlist_t *outnvl) 3658 { 3659 (void) unused, (void) outnvl; 3660 const char *message; 3661 char *poolname; 3662 spa_t *spa; 3663 int error; 3664 3665 /* 3666 * The poolname in the ioctl is not set, we get it from the TSD, 3667 * which was set at the end of the last successful ioctl that allows 3668 * logging. The secpolicy func already checked that it is set. 3669 * Only one log ioctl is allowed after each successful ioctl, so 3670 * we clear the TSD here. 3671 */ 3672 poolname = tsd_get(zfs_allow_log_key); 3673 if (poolname == NULL) 3674 return (SET_ERROR(EINVAL)); 3675 (void) tsd_set(zfs_allow_log_key, NULL); 3676 error = spa_open(poolname, &spa, FTAG); 3677 kmem_strfree(poolname); 3678 if (error != 0) 3679 return (error); 3680 3681 message = fnvlist_lookup_string(innvl, "message"); 3682 3683 if (spa_version(spa) < SPA_VERSION_ZPOOL_HISTORY) { 3684 spa_close(spa, FTAG); 3685 return (SET_ERROR(ENOTSUP)); 3686 } 3687 3688 error = spa_history_log(spa, message); 3689 spa_close(spa, FTAG); 3690 return (error); 3691 } 3692 3693 /* 3694 * This ioctl is used to set the bootenv configuration on the current 3695 * pool. This configuration is stored in the second padding area of the label, 3696 * and it is used by the bootloader(s) to store the bootloader and/or system 3697 * specific data. 3698 * The data is stored as nvlist data stream, and is protected by 3699 * an embedded checksum. 3700 * The version can have two possible values: 3701 * VB_RAW: nvlist should have key GRUB_ENVMAP, value DATA_TYPE_STRING. 3702 * VB_NVLIST: nvlist with arbitrary <key, value> pairs. 3703 */ 3704 static const zfs_ioc_key_t zfs_keys_set_bootenv[] = { 3705 {"version", DATA_TYPE_UINT64, 0}, 3706 {"<keys>", DATA_TYPE_ANY, ZK_OPTIONAL | ZK_WILDCARDLIST}, 3707 }; 3708 3709 static int 3710 zfs_ioc_set_bootenv(const char *name, nvlist_t *innvl, nvlist_t *outnvl) 3711 { 3712 int error; 3713 spa_t *spa; 3714 3715 if ((error = spa_open(name, &spa, FTAG)) != 0) 3716 return (error); 3717 spa_vdev_state_enter(spa, SCL_ALL); 3718 error = vdev_label_write_bootenv(spa->spa_root_vdev, innvl); 3719 (void) spa_vdev_state_exit(spa, NULL, 0); 3720 spa_close(spa, FTAG); 3721 return (error); 3722 } 3723 3724 static const zfs_ioc_key_t zfs_keys_get_bootenv[] = { 3725 /* no nvl keys */ 3726 }; 3727 3728 static int 3729 zfs_ioc_get_bootenv(const char *name, nvlist_t *innvl, nvlist_t *outnvl) 3730 { 3731 spa_t *spa; 3732 int error; 3733 3734 if ((error = spa_open(name, &spa, FTAG)) != 0) 3735 return (error); 3736 spa_vdev_state_enter(spa, SCL_ALL); 3737 error = vdev_label_read_bootenv(spa->spa_root_vdev, outnvl); 3738 (void) spa_vdev_state_exit(spa, NULL, 0); 3739 spa_close(spa, FTAG); 3740 return (error); 3741 } 3742 3743 /* 3744 * The dp_config_rwlock must not be held when calling this, because the 3745 * unmount may need to write out data. 3746 * 3747 * This function is best-effort. Callers must deal gracefully if it 3748 * remains mounted (or is remounted after this call). 3749 * 3750 * Returns 0 if the argument is not a snapshot, or it is not currently a 3751 * filesystem, or we were able to unmount it. Returns error code otherwise. 3752 */ 3753 void 3754 zfs_unmount_snap(const char *snapname) 3755 { 3756 if (strchr(snapname, '@') == NULL) 3757 return; 3758 3759 (void) zfsctl_snapshot_unmount(snapname, MNT_FORCE); 3760 } 3761 3762 static int 3763 zfs_unmount_snap_cb(const char *snapname, void *arg) 3764 { 3765 (void) arg; 3766 zfs_unmount_snap(snapname); 3767 return (0); 3768 } 3769 3770 /* 3771 * When a clone is destroyed, its origin may also need to be destroyed, 3772 * in which case it must be unmounted. This routine will do that unmount 3773 * if necessary. 3774 */ 3775 void 3776 zfs_destroy_unmount_origin(const char *fsname) 3777 { 3778 int error; 3779 objset_t *os; 3780 dsl_dataset_t *ds; 3781 3782 error = dmu_objset_hold(fsname, FTAG, &os); 3783 if (error != 0) 3784 return; 3785 ds = dmu_objset_ds(os); 3786 if (dsl_dir_is_clone(ds->ds_dir) && DS_IS_DEFER_DESTROY(ds->ds_prev)) { 3787 char originname[ZFS_MAX_DATASET_NAME_LEN]; 3788 dsl_dataset_name(ds->ds_prev, originname); 3789 dmu_objset_rele(os, FTAG); 3790 zfs_unmount_snap(originname); 3791 } else { 3792 dmu_objset_rele(os, FTAG); 3793 } 3794 } 3795 3796 /* 3797 * innvl: { 3798 * "snaps" -> { snapshot1, snapshot2 } 3799 * (optional boolean) "defer" 3800 * } 3801 * 3802 * outnvl: snapshot -> error code (int32) 3803 */ 3804 static const zfs_ioc_key_t zfs_keys_destroy_snaps[] = { 3805 {"snaps", DATA_TYPE_NVLIST, 0}, 3806 {"defer", DATA_TYPE_BOOLEAN, ZK_OPTIONAL}, 3807 }; 3808 3809 static int 3810 zfs_ioc_destroy_snaps(const char *poolname, nvlist_t *innvl, nvlist_t *outnvl) 3811 { 3812 int poollen; 3813 nvlist_t *snaps; 3814 nvpair_t *pair; 3815 boolean_t defer; 3816 spa_t *spa; 3817 3818 snaps = fnvlist_lookup_nvlist(innvl, "snaps"); 3819 defer = nvlist_exists(innvl, "defer"); 3820 3821 poollen = strlen(poolname); 3822 for (pair = nvlist_next_nvpair(snaps, NULL); pair != NULL; 3823 pair = nvlist_next_nvpair(snaps, pair)) { 3824 const char *name = nvpair_name(pair); 3825 3826 /* 3827 * The snap must be in the specified pool to prevent the 3828 * invalid removal of zvol minors below. 3829 */ 3830 if (strncmp(name, poolname, poollen) != 0 || 3831 (name[poollen] != '/' && name[poollen] != '@')) 3832 return (SET_ERROR(EXDEV)); 3833 3834 zfs_unmount_snap(nvpair_name(pair)); 3835 if (spa_open(name, &spa, FTAG) == 0) { 3836 zvol_remove_minors(spa, name, B_TRUE); 3837 spa_close(spa, FTAG); 3838 } 3839 } 3840 3841 return (dsl_destroy_snapshots_nvl(snaps, defer, outnvl)); 3842 } 3843 3844 /* 3845 * Create bookmarks. The bookmark names are of the form <fs>#<bmark>. 3846 * All bookmarks and snapshots must be in the same pool. 3847 * dsl_bookmark_create_nvl_validate describes the nvlist schema in more detail. 3848 * 3849 * innvl: { 3850 * new_bookmark1 -> existing_snapshot, 3851 * new_bookmark2 -> existing_bookmark, 3852 * } 3853 * 3854 * outnvl: bookmark -> error code (int32) 3855 * 3856 */ 3857 static const zfs_ioc_key_t zfs_keys_bookmark[] = { 3858 {"<bookmark>...", DATA_TYPE_STRING, ZK_WILDCARDLIST}, 3859 }; 3860 3861 static int 3862 zfs_ioc_bookmark(const char *poolname, nvlist_t *innvl, nvlist_t *outnvl) 3863 { 3864 (void) poolname; 3865 return (dsl_bookmark_create(innvl, outnvl)); 3866 } 3867 3868 /* 3869 * innvl: { 3870 * property 1, property 2, ... 3871 * } 3872 * 3873 * outnvl: { 3874 * bookmark name 1 -> { property 1, property 2, ... }, 3875 * bookmark name 2 -> { property 1, property 2, ... } 3876 * } 3877 * 3878 */ 3879 static const zfs_ioc_key_t zfs_keys_get_bookmarks[] = { 3880 {"<property>...", DATA_TYPE_BOOLEAN, ZK_WILDCARDLIST | ZK_OPTIONAL}, 3881 }; 3882 3883 static int 3884 zfs_ioc_get_bookmarks(const char *fsname, nvlist_t *innvl, nvlist_t *outnvl) 3885 { 3886 return (dsl_get_bookmarks(fsname, innvl, outnvl)); 3887 } 3888 3889 /* 3890 * innvl is not used. 3891 * 3892 * outnvl: { 3893 * property 1, property 2, ... 3894 * } 3895 * 3896 */ 3897 static const zfs_ioc_key_t zfs_keys_get_bookmark_props[] = { 3898 /* no nvl keys */ 3899 }; 3900 3901 static int 3902 zfs_ioc_get_bookmark_props(const char *bookmark, nvlist_t *innvl, 3903 nvlist_t *outnvl) 3904 { 3905 (void) innvl; 3906 char fsname[ZFS_MAX_DATASET_NAME_LEN]; 3907 char *bmname; 3908 3909 bmname = strchr(bookmark, '#'); 3910 if (bmname == NULL) 3911 return (SET_ERROR(EINVAL)); 3912 bmname++; 3913 3914 (void) strlcpy(fsname, bookmark, sizeof (fsname)); 3915 *(strchr(fsname, '#')) = '\0'; 3916 3917 return (dsl_get_bookmark_props(fsname, bmname, outnvl)); 3918 } 3919 3920 /* 3921 * innvl: { 3922 * bookmark name 1, bookmark name 2 3923 * } 3924 * 3925 * outnvl: bookmark -> error code (int32) 3926 * 3927 */ 3928 static const zfs_ioc_key_t zfs_keys_destroy_bookmarks[] = { 3929 {"<bookmark>...", DATA_TYPE_BOOLEAN, ZK_WILDCARDLIST}, 3930 }; 3931 3932 static int 3933 zfs_ioc_destroy_bookmarks(const char *poolname, nvlist_t *innvl, 3934 nvlist_t *outnvl) 3935 { 3936 int error, poollen; 3937 3938 poollen = strlen(poolname); 3939 for (nvpair_t *pair = nvlist_next_nvpair(innvl, NULL); 3940 pair != NULL; pair = nvlist_next_nvpair(innvl, pair)) { 3941 const char *name = nvpair_name(pair); 3942 const char *cp = strchr(name, '#'); 3943 3944 /* 3945 * The bookmark name must contain an #, and the part after it 3946 * must contain only valid characters. 3947 */ 3948 if (cp == NULL || 3949 zfs_component_namecheck(cp + 1, NULL, NULL) != 0) 3950 return (SET_ERROR(EINVAL)); 3951 3952 /* 3953 * The bookmark must be in the specified pool. 3954 */ 3955 if (strncmp(name, poolname, poollen) != 0 || 3956 (name[poollen] != '/' && name[poollen] != '#')) 3957 return (SET_ERROR(EXDEV)); 3958 } 3959 3960 error = dsl_bookmark_destroy(innvl, outnvl); 3961 return (error); 3962 } 3963 3964 static const zfs_ioc_key_t zfs_keys_channel_program[] = { 3965 {"program", DATA_TYPE_STRING, 0}, 3966 {"arg", DATA_TYPE_ANY, 0}, 3967 {"sync", DATA_TYPE_BOOLEAN_VALUE, ZK_OPTIONAL}, 3968 {"instrlimit", DATA_TYPE_UINT64, ZK_OPTIONAL}, 3969 {"memlimit", DATA_TYPE_UINT64, ZK_OPTIONAL}, 3970 }; 3971 3972 static int 3973 zfs_ioc_channel_program(const char *poolname, nvlist_t *innvl, 3974 nvlist_t *outnvl) 3975 { 3976 const char *program; 3977 uint64_t instrlimit, memlimit; 3978 boolean_t sync_flag; 3979 nvpair_t *nvarg = NULL; 3980 3981 program = fnvlist_lookup_string(innvl, ZCP_ARG_PROGRAM); 3982 if (0 != nvlist_lookup_boolean_value(innvl, ZCP_ARG_SYNC, &sync_flag)) { 3983 sync_flag = B_TRUE; 3984 } 3985 if (0 != nvlist_lookup_uint64(innvl, ZCP_ARG_INSTRLIMIT, &instrlimit)) { 3986 instrlimit = ZCP_DEFAULT_INSTRLIMIT; 3987 } 3988 if (0 != nvlist_lookup_uint64(innvl, ZCP_ARG_MEMLIMIT, &memlimit)) { 3989 memlimit = ZCP_DEFAULT_MEMLIMIT; 3990 } 3991 nvarg = fnvlist_lookup_nvpair(innvl, ZCP_ARG_ARGLIST); 3992 3993 if (instrlimit == 0 || instrlimit > zfs_lua_max_instrlimit) 3994 return (SET_ERROR(EINVAL)); 3995 if (memlimit == 0 || memlimit > zfs_lua_max_memlimit) 3996 return (SET_ERROR(EINVAL)); 3997 3998 return (zcp_eval(poolname, program, sync_flag, instrlimit, memlimit, 3999 nvarg, outnvl)); 4000 } 4001 4002 /* 4003 * innvl: unused 4004 * outnvl: empty 4005 */ 4006 static const zfs_ioc_key_t zfs_keys_pool_checkpoint[] = { 4007 /* no nvl keys */ 4008 }; 4009 4010 static int 4011 zfs_ioc_pool_checkpoint(const char *poolname, nvlist_t *innvl, nvlist_t *outnvl) 4012 { 4013 (void) innvl, (void) outnvl; 4014 return (spa_checkpoint(poolname)); 4015 } 4016 4017 /* 4018 * innvl: unused 4019 * outnvl: empty 4020 */ 4021 static const zfs_ioc_key_t zfs_keys_pool_discard_checkpoint[] = { 4022 /* no nvl keys */ 4023 }; 4024 4025 static int 4026 zfs_ioc_pool_discard_checkpoint(const char *poolname, nvlist_t *innvl, 4027 nvlist_t *outnvl) 4028 { 4029 (void) innvl, (void) outnvl; 4030 return (spa_checkpoint_discard(poolname)); 4031 } 4032 4033 /* 4034 * inputs: 4035 * zc_name name of dataset to destroy 4036 * zc_defer_destroy mark for deferred destroy 4037 * 4038 * outputs: none 4039 */ 4040 static int 4041 zfs_ioc_destroy(zfs_cmd_t *zc) 4042 { 4043 objset_t *os; 4044 dmu_objset_type_t ost; 4045 int err; 4046 4047 err = dmu_objset_hold(zc->zc_name, FTAG, &os); 4048 if (err != 0) 4049 return (err); 4050 ost = dmu_objset_type(os); 4051 dmu_objset_rele(os, FTAG); 4052 4053 if (ost == DMU_OST_ZFS) 4054 zfs_unmount_snap(zc->zc_name); 4055 4056 if (strchr(zc->zc_name, '@')) { 4057 err = dsl_destroy_snapshot(zc->zc_name, zc->zc_defer_destroy); 4058 } else { 4059 err = dsl_destroy_head(zc->zc_name); 4060 if (err == EEXIST) { 4061 /* 4062 * It is possible that the given DS may have 4063 * hidden child (%recv) datasets - "leftovers" 4064 * resulting from the previously interrupted 4065 * 'zfs receive'. 4066 * 4067 * 6 extra bytes for /%recv 4068 */ 4069 char namebuf[ZFS_MAX_DATASET_NAME_LEN + 6]; 4070 4071 if (snprintf(namebuf, sizeof (namebuf), "%s/%s", 4072 zc->zc_name, recv_clone_name) >= 4073 sizeof (namebuf)) 4074 return (SET_ERROR(EINVAL)); 4075 4076 /* 4077 * Try to remove the hidden child (%recv) and after 4078 * that try to remove the target dataset. 4079 * If the hidden child (%recv) does not exist 4080 * the original error (EEXIST) will be returned 4081 */ 4082 err = dsl_destroy_head(namebuf); 4083 if (err == 0) 4084 err = dsl_destroy_head(zc->zc_name); 4085 else if (err == ENOENT) 4086 err = SET_ERROR(EEXIST); 4087 } 4088 } 4089 4090 return (err); 4091 } 4092 4093 /* 4094 * innvl: { 4095 * "initialize_command" -> POOL_INITIALIZE_{CANCEL|START|SUSPEND} (uint64) 4096 * "initialize_vdevs": { -> guids to initialize (nvlist) 4097 * "vdev_path_1": vdev_guid_1, (uint64), 4098 * "vdev_path_2": vdev_guid_2, (uint64), 4099 * ... 4100 * }, 4101 * } 4102 * 4103 * outnvl: { 4104 * "initialize_vdevs": { -> initialization errors (nvlist) 4105 * "vdev_path_1": errno, see function body for possible errnos (uint64) 4106 * "vdev_path_2": errno, ... (uint64) 4107 * ... 4108 * } 4109 * } 4110 * 4111 * EINVAL is returned for an unknown commands or if any of the provided vdev 4112 * guids have be specified with a type other than uint64. 4113 */ 4114 static const zfs_ioc_key_t zfs_keys_pool_initialize[] = { 4115 {ZPOOL_INITIALIZE_COMMAND, DATA_TYPE_UINT64, 0}, 4116 {ZPOOL_INITIALIZE_VDEVS, DATA_TYPE_NVLIST, 0} 4117 }; 4118 4119 static int 4120 zfs_ioc_pool_initialize(const char *poolname, nvlist_t *innvl, nvlist_t *outnvl) 4121 { 4122 uint64_t cmd_type; 4123 if (nvlist_lookup_uint64(innvl, ZPOOL_INITIALIZE_COMMAND, 4124 &cmd_type) != 0) { 4125 return (SET_ERROR(EINVAL)); 4126 } 4127 4128 if (!(cmd_type == POOL_INITIALIZE_CANCEL || 4129 cmd_type == POOL_INITIALIZE_START || 4130 cmd_type == POOL_INITIALIZE_SUSPEND || 4131 cmd_type == POOL_INITIALIZE_UNINIT)) { 4132 return (SET_ERROR(EINVAL)); 4133 } 4134 4135 nvlist_t *vdev_guids; 4136 if (nvlist_lookup_nvlist(innvl, ZPOOL_INITIALIZE_VDEVS, 4137 &vdev_guids) != 0) { 4138 return (SET_ERROR(EINVAL)); 4139 } 4140 4141 for (nvpair_t *pair = nvlist_next_nvpair(vdev_guids, NULL); 4142 pair != NULL; pair = nvlist_next_nvpair(vdev_guids, pair)) { 4143 uint64_t vdev_guid; 4144 if (nvpair_value_uint64(pair, &vdev_guid) != 0) { 4145 return (SET_ERROR(EINVAL)); 4146 } 4147 } 4148 4149 spa_t *spa; 4150 int error = spa_open(poolname, &spa, FTAG); 4151 if (error != 0) 4152 return (error); 4153 4154 nvlist_t *vdev_errlist = fnvlist_alloc(); 4155 int total_errors = spa_vdev_initialize(spa, vdev_guids, cmd_type, 4156 vdev_errlist); 4157 4158 if (fnvlist_size(vdev_errlist) > 0) { 4159 fnvlist_add_nvlist(outnvl, ZPOOL_INITIALIZE_VDEVS, 4160 vdev_errlist); 4161 } 4162 fnvlist_free(vdev_errlist); 4163 4164 spa_close(spa, FTAG); 4165 return (total_errors > 0 ? SET_ERROR(EINVAL) : 0); 4166 } 4167 4168 /* 4169 * innvl: { 4170 * "trim_command" -> POOL_TRIM_{CANCEL|START|SUSPEND} (uint64) 4171 * "trim_vdevs": { -> guids to TRIM (nvlist) 4172 * "vdev_path_1": vdev_guid_1, (uint64), 4173 * "vdev_path_2": vdev_guid_2, (uint64), 4174 * ... 4175 * }, 4176 * "trim_rate" -> Target TRIM rate in bytes/sec. 4177 * "trim_secure" -> Set to request a secure TRIM. 4178 * } 4179 * 4180 * outnvl: { 4181 * "trim_vdevs": { -> TRIM errors (nvlist) 4182 * "vdev_path_1": errno, see function body for possible errnos (uint64) 4183 * "vdev_path_2": errno, ... (uint64) 4184 * ... 4185 * } 4186 * } 4187 * 4188 * EINVAL is returned for an unknown commands or if any of the provided vdev 4189 * guids have be specified with a type other than uint64. 4190 */ 4191 static const zfs_ioc_key_t zfs_keys_pool_trim[] = { 4192 {ZPOOL_TRIM_COMMAND, DATA_TYPE_UINT64, 0}, 4193 {ZPOOL_TRIM_VDEVS, DATA_TYPE_NVLIST, 0}, 4194 {ZPOOL_TRIM_RATE, DATA_TYPE_UINT64, ZK_OPTIONAL}, 4195 {ZPOOL_TRIM_SECURE, DATA_TYPE_BOOLEAN_VALUE, ZK_OPTIONAL}, 4196 }; 4197 4198 static int 4199 zfs_ioc_pool_trim(const char *poolname, nvlist_t *innvl, nvlist_t *outnvl) 4200 { 4201 uint64_t cmd_type; 4202 if (nvlist_lookup_uint64(innvl, ZPOOL_TRIM_COMMAND, &cmd_type) != 0) 4203 return (SET_ERROR(EINVAL)); 4204 4205 if (!(cmd_type == POOL_TRIM_CANCEL || 4206 cmd_type == POOL_TRIM_START || 4207 cmd_type == POOL_TRIM_SUSPEND)) { 4208 return (SET_ERROR(EINVAL)); 4209 } 4210 4211 nvlist_t *vdev_guids; 4212 if (nvlist_lookup_nvlist(innvl, ZPOOL_TRIM_VDEVS, &vdev_guids) != 0) 4213 return (SET_ERROR(EINVAL)); 4214 4215 for (nvpair_t *pair = nvlist_next_nvpair(vdev_guids, NULL); 4216 pair != NULL; pair = nvlist_next_nvpair(vdev_guids, pair)) { 4217 uint64_t vdev_guid; 4218 if (nvpair_value_uint64(pair, &vdev_guid) != 0) { 4219 return (SET_ERROR(EINVAL)); 4220 } 4221 } 4222 4223 /* Optional, defaults to maximum rate when not provided */ 4224 uint64_t rate; 4225 if (nvlist_lookup_uint64(innvl, ZPOOL_TRIM_RATE, &rate) != 0) 4226 rate = 0; 4227 4228 /* Optional, defaults to standard TRIM when not provided */ 4229 boolean_t secure; 4230 if (nvlist_lookup_boolean_value(innvl, ZPOOL_TRIM_SECURE, 4231 &secure) != 0) { 4232 secure = B_FALSE; 4233 } 4234 4235 spa_t *spa; 4236 int error = spa_open(poolname, &spa, FTAG); 4237 if (error != 0) 4238 return (error); 4239 4240 nvlist_t *vdev_errlist = fnvlist_alloc(); 4241 int total_errors = spa_vdev_trim(spa, vdev_guids, cmd_type, 4242 rate, !!zfs_trim_metaslab_skip, secure, vdev_errlist); 4243 4244 if (fnvlist_size(vdev_errlist) > 0) 4245 fnvlist_add_nvlist(outnvl, ZPOOL_TRIM_VDEVS, vdev_errlist); 4246 4247 fnvlist_free(vdev_errlist); 4248 4249 spa_close(spa, FTAG); 4250 return (total_errors > 0 ? SET_ERROR(EINVAL) : 0); 4251 } 4252 4253 /* 4254 * This ioctl waits for activity of a particular type to complete. If there is 4255 * no activity of that type in progress, it returns immediately, and the 4256 * returned value "waited" is false. If there is activity in progress, and no 4257 * tag is passed in, the ioctl blocks until all activity of that type is 4258 * complete, and then returns with "waited" set to true. 4259 * 4260 * If a tag is provided, it identifies a particular instance of an activity to 4261 * wait for. Currently, this is only valid for use with 'initialize', because 4262 * that is the only activity for which there can be multiple instances running 4263 * concurrently. In the case of 'initialize', the tag corresponds to the guid of 4264 * the vdev on which to wait. 4265 * 4266 * If a thread waiting in the ioctl receives a signal, the call will return 4267 * immediately, and the return value will be EINTR. 4268 * 4269 * innvl: { 4270 * "wait_activity" -> int32_t 4271 * (optional) "wait_tag" -> uint64_t 4272 * } 4273 * 4274 * outnvl: "waited" -> boolean_t 4275 */ 4276 static const zfs_ioc_key_t zfs_keys_pool_wait[] = { 4277 {ZPOOL_WAIT_ACTIVITY, DATA_TYPE_INT32, 0}, 4278 {ZPOOL_WAIT_TAG, DATA_TYPE_UINT64, ZK_OPTIONAL}, 4279 }; 4280 4281 static int 4282 zfs_ioc_wait(const char *name, nvlist_t *innvl, nvlist_t *outnvl) 4283 { 4284 int32_t activity; 4285 uint64_t tag; 4286 boolean_t waited; 4287 int error; 4288 4289 if (nvlist_lookup_int32(innvl, ZPOOL_WAIT_ACTIVITY, &activity) != 0) 4290 return (EINVAL); 4291 4292 if (nvlist_lookup_uint64(innvl, ZPOOL_WAIT_TAG, &tag) == 0) 4293 error = spa_wait_tag(name, activity, tag, &waited); 4294 else 4295 error = spa_wait(name, activity, &waited); 4296 4297 if (error == 0) 4298 fnvlist_add_boolean_value(outnvl, ZPOOL_WAIT_WAITED, waited); 4299 4300 return (error); 4301 } 4302 4303 /* 4304 * This ioctl waits for activity of a particular type to complete. If there is 4305 * no activity of that type in progress, it returns immediately, and the 4306 * returned value "waited" is false. If there is activity in progress, and no 4307 * tag is passed in, the ioctl blocks until all activity of that type is 4308 * complete, and then returns with "waited" set to true. 4309 * 4310 * If a thread waiting in the ioctl receives a signal, the call will return 4311 * immediately, and the return value will be EINTR. 4312 * 4313 * innvl: { 4314 * "wait_activity" -> int32_t 4315 * } 4316 * 4317 * outnvl: "waited" -> boolean_t 4318 */ 4319 static const zfs_ioc_key_t zfs_keys_fs_wait[] = { 4320 {ZFS_WAIT_ACTIVITY, DATA_TYPE_INT32, 0}, 4321 }; 4322 4323 static int 4324 zfs_ioc_wait_fs(const char *name, nvlist_t *innvl, nvlist_t *outnvl) 4325 { 4326 int32_t activity; 4327 boolean_t waited = B_FALSE; 4328 int error; 4329 dsl_pool_t *dp; 4330 dsl_dir_t *dd; 4331 dsl_dataset_t *ds; 4332 4333 if (nvlist_lookup_int32(innvl, ZFS_WAIT_ACTIVITY, &activity) != 0) 4334 return (SET_ERROR(EINVAL)); 4335 4336 if (activity >= ZFS_WAIT_NUM_ACTIVITIES || activity < 0) 4337 return (SET_ERROR(EINVAL)); 4338 4339 if ((error = dsl_pool_hold(name, FTAG, &dp)) != 0) 4340 return (error); 4341 4342 if ((error = dsl_dataset_hold(dp, name, FTAG, &ds)) != 0) { 4343 dsl_pool_rele(dp, FTAG); 4344 return (error); 4345 } 4346 4347 dd = ds->ds_dir; 4348 mutex_enter(&dd->dd_activity_lock); 4349 dd->dd_activity_waiters++; 4350 4351 /* 4352 * We get a long-hold here so that the dsl_dataset_t and dsl_dir_t 4353 * aren't evicted while we're waiting. Normally this is prevented by 4354 * holding the pool, but we can't do that while we're waiting since 4355 * that would prevent TXGs from syncing out. Some of the functionality 4356 * of long-holds (e.g. preventing deletion) is unnecessary for this 4357 * case, since we would cancel the waiters before proceeding with a 4358 * deletion. An alternative mechanism for keeping the dataset around 4359 * could be developed but this is simpler. 4360 */ 4361 dsl_dataset_long_hold(ds, FTAG); 4362 dsl_pool_rele(dp, FTAG); 4363 4364 error = dsl_dir_wait(dd, ds, activity, &waited); 4365 4366 dsl_dataset_long_rele(ds, FTAG); 4367 dd->dd_activity_waiters--; 4368 if (dd->dd_activity_waiters == 0) 4369 cv_signal(&dd->dd_activity_cv); 4370 mutex_exit(&dd->dd_activity_lock); 4371 4372 dsl_dataset_rele(ds, FTAG); 4373 4374 if (error == 0) 4375 fnvlist_add_boolean_value(outnvl, ZFS_WAIT_WAITED, waited); 4376 4377 return (error); 4378 } 4379 4380 /* 4381 * fsname is name of dataset to rollback (to most recent snapshot) 4382 * 4383 * innvl may contain name of expected target snapshot 4384 * 4385 * outnvl: "target" -> name of most recent snapshot 4386 * } 4387 */ 4388 static const zfs_ioc_key_t zfs_keys_rollback[] = { 4389 {"target", DATA_TYPE_STRING, ZK_OPTIONAL}, 4390 }; 4391 4392 static int 4393 zfs_ioc_rollback(const char *fsname, nvlist_t *innvl, nvlist_t *outnvl) 4394 { 4395 zfsvfs_t *zfsvfs; 4396 zvol_state_handle_t *zv; 4397 const char *target = NULL; 4398 int error; 4399 4400 (void) nvlist_lookup_string(innvl, "target", &target); 4401 if (target != NULL) { 4402 const char *cp = strchr(target, '@'); 4403 4404 /* 4405 * The snap name must contain an @, and the part after it must 4406 * contain only valid characters. 4407 */ 4408 if (cp == NULL || 4409 zfs_component_namecheck(cp + 1, NULL, NULL) != 0) 4410 return (SET_ERROR(EINVAL)); 4411 } 4412 4413 if (getzfsvfs(fsname, &zfsvfs) == 0) { 4414 dsl_dataset_t *ds; 4415 4416 ds = dmu_objset_ds(zfsvfs->z_os); 4417 error = zfs_suspend_fs(zfsvfs); 4418 if (error == 0) { 4419 int resume_err; 4420 4421 error = dsl_dataset_rollback(fsname, target, zfsvfs, 4422 outnvl); 4423 resume_err = zfs_resume_fs(zfsvfs, ds); 4424 error = error ? error : resume_err; 4425 } 4426 zfs_vfs_rele(zfsvfs); 4427 } else if ((zv = zvol_suspend(fsname)) != NULL) { 4428 error = dsl_dataset_rollback(fsname, target, zvol_tag(zv), 4429 outnvl); 4430 zvol_resume(zv); 4431 } else { 4432 error = dsl_dataset_rollback(fsname, target, NULL, outnvl); 4433 } 4434 return (error); 4435 } 4436 4437 static int 4438 recursive_unmount(const char *fsname, void *arg) 4439 { 4440 const char *snapname = arg; 4441 char *fullname; 4442 4443 fullname = kmem_asprintf("%s@%s", fsname, snapname); 4444 zfs_unmount_snap(fullname); 4445 kmem_strfree(fullname); 4446 4447 return (0); 4448 } 4449 4450 /* 4451 * 4452 * snapname is the snapshot to redact. 4453 * innvl: { 4454 * "bookname" -> (string) 4455 * shortname of the redaction bookmark to generate 4456 * "snapnv" -> (nvlist, values ignored) 4457 * snapshots to redact snapname with respect to 4458 * } 4459 * 4460 * outnvl is unused 4461 */ 4462 4463 static const zfs_ioc_key_t zfs_keys_redact[] = { 4464 {"bookname", DATA_TYPE_STRING, 0}, 4465 {"snapnv", DATA_TYPE_NVLIST, 0}, 4466 }; 4467 4468 static int 4469 zfs_ioc_redact(const char *snapname, nvlist_t *innvl, nvlist_t *outnvl) 4470 { 4471 (void) outnvl; 4472 nvlist_t *redactnvl = NULL; 4473 const char *redactbook = NULL; 4474 4475 if (nvlist_lookup_nvlist(innvl, "snapnv", &redactnvl) != 0) 4476 return (SET_ERROR(EINVAL)); 4477 if (fnvlist_num_pairs(redactnvl) == 0) 4478 return (SET_ERROR(ENXIO)); 4479 if (nvlist_lookup_string(innvl, "bookname", &redactbook) != 0) 4480 return (SET_ERROR(EINVAL)); 4481 4482 return (dmu_redact_snap(snapname, redactnvl, redactbook)); 4483 } 4484 4485 /* 4486 * inputs: 4487 * zc_name old name of dataset 4488 * zc_value new name of dataset 4489 * zc_cookie recursive flag (only valid for snapshots) 4490 * 4491 * outputs: none 4492 */ 4493 static int 4494 zfs_ioc_rename(zfs_cmd_t *zc) 4495 { 4496 objset_t *os; 4497 dmu_objset_type_t ost; 4498 boolean_t recursive = zc->zc_cookie & 1; 4499 boolean_t nounmount = !!(zc->zc_cookie & 2); 4500 char *at; 4501 int err; 4502 4503 /* "zfs rename" from and to ...%recv datasets should both fail */ 4504 zc->zc_name[sizeof (zc->zc_name) - 1] = '\0'; 4505 zc->zc_value[sizeof (zc->zc_value) - 1] = '\0'; 4506 if (dataset_namecheck(zc->zc_name, NULL, NULL) != 0 || 4507 dataset_namecheck(zc->zc_value, NULL, NULL) != 0 || 4508 strchr(zc->zc_name, '%') || strchr(zc->zc_value, '%')) 4509 return (SET_ERROR(EINVAL)); 4510 4511 err = dmu_objset_hold(zc->zc_name, FTAG, &os); 4512 if (err != 0) 4513 return (err); 4514 ost = dmu_objset_type(os); 4515 dmu_objset_rele(os, FTAG); 4516 4517 at = strchr(zc->zc_name, '@'); 4518 if (at != NULL) { 4519 /* snaps must be in same fs */ 4520 int error; 4521 4522 if (strncmp(zc->zc_name, zc->zc_value, at - zc->zc_name + 1)) 4523 return (SET_ERROR(EXDEV)); 4524 *at = '\0'; 4525 if (ost == DMU_OST_ZFS && !nounmount) { 4526 error = dmu_objset_find(zc->zc_name, 4527 recursive_unmount, at + 1, 4528 recursive ? DS_FIND_CHILDREN : 0); 4529 if (error != 0) { 4530 *at = '@'; 4531 return (error); 4532 } 4533 } 4534 error = dsl_dataset_rename_snapshot(zc->zc_name, 4535 at + 1, strchr(zc->zc_value, '@') + 1, recursive); 4536 *at = '@'; 4537 4538 return (error); 4539 } else { 4540 return (dsl_dir_rename(zc->zc_name, zc->zc_value)); 4541 } 4542 } 4543 4544 static int 4545 zfs_check_settable(const char *dsname, nvpair_t *pair, cred_t *cr) 4546 { 4547 const char *propname = nvpair_name(pair); 4548 boolean_t issnap = (strchr(dsname, '@') != NULL); 4549 zfs_prop_t prop = zfs_name_to_prop(propname); 4550 uint64_t intval, compval; 4551 int err; 4552 4553 if (prop == ZPROP_USERPROP) { 4554 if (zfs_prop_user(propname)) { 4555 if ((err = zfs_secpolicy_write_perms(dsname, 4556 ZFS_DELEG_PERM_USERPROP, cr))) 4557 return (err); 4558 return (0); 4559 } 4560 4561 if (!issnap && zfs_prop_userquota(propname)) { 4562 const char *perm = NULL; 4563 const char *uq_prefix = 4564 zfs_userquota_prop_prefixes[ZFS_PROP_USERQUOTA]; 4565 const char *gq_prefix = 4566 zfs_userquota_prop_prefixes[ZFS_PROP_GROUPQUOTA]; 4567 const char *uiq_prefix = 4568 zfs_userquota_prop_prefixes[ZFS_PROP_USEROBJQUOTA]; 4569 const char *giq_prefix = 4570 zfs_userquota_prop_prefixes[ZFS_PROP_GROUPOBJQUOTA]; 4571 const char *pq_prefix = 4572 zfs_userquota_prop_prefixes[ZFS_PROP_PROJECTQUOTA]; 4573 const char *piq_prefix = zfs_userquota_prop_prefixes[\ 4574 ZFS_PROP_PROJECTOBJQUOTA]; 4575 4576 if (strncmp(propname, uq_prefix, 4577 strlen(uq_prefix)) == 0) { 4578 perm = ZFS_DELEG_PERM_USERQUOTA; 4579 } else if (strncmp(propname, uiq_prefix, 4580 strlen(uiq_prefix)) == 0) { 4581 perm = ZFS_DELEG_PERM_USEROBJQUOTA; 4582 } else if (strncmp(propname, gq_prefix, 4583 strlen(gq_prefix)) == 0) { 4584 perm = ZFS_DELEG_PERM_GROUPQUOTA; 4585 } else if (strncmp(propname, giq_prefix, 4586 strlen(giq_prefix)) == 0) { 4587 perm = ZFS_DELEG_PERM_GROUPOBJQUOTA; 4588 } else if (strncmp(propname, pq_prefix, 4589 strlen(pq_prefix)) == 0) { 4590 perm = ZFS_DELEG_PERM_PROJECTQUOTA; 4591 } else if (strncmp(propname, piq_prefix, 4592 strlen(piq_prefix)) == 0) { 4593 perm = ZFS_DELEG_PERM_PROJECTOBJQUOTA; 4594 } else { 4595 /* {USER|GROUP|PROJECT}USED are read-only */ 4596 return (SET_ERROR(EINVAL)); 4597 } 4598 4599 if ((err = zfs_secpolicy_write_perms(dsname, perm, cr))) 4600 return (err); 4601 return (0); 4602 } 4603 4604 return (SET_ERROR(EINVAL)); 4605 } 4606 4607 if (issnap) 4608 return (SET_ERROR(EINVAL)); 4609 4610 if (nvpair_type(pair) == DATA_TYPE_NVLIST) { 4611 /* 4612 * dsl_prop_get_all_impl() returns properties in this 4613 * format. 4614 */ 4615 nvlist_t *attrs; 4616 VERIFY(nvpair_value_nvlist(pair, &attrs) == 0); 4617 VERIFY(nvlist_lookup_nvpair(attrs, ZPROP_VALUE, 4618 &pair) == 0); 4619 } 4620 4621 /* 4622 * Check that this value is valid for this pool version 4623 */ 4624 switch (prop) { 4625 case ZFS_PROP_COMPRESSION: 4626 /* 4627 * If the user specified gzip compression, make sure 4628 * the SPA supports it. We ignore any errors here since 4629 * we'll catch them later. 4630 */ 4631 if (nvpair_value_uint64(pair, &intval) == 0) { 4632 compval = ZIO_COMPRESS_ALGO(intval); 4633 if (compval >= ZIO_COMPRESS_GZIP_1 && 4634 compval <= ZIO_COMPRESS_GZIP_9 && 4635 zfs_earlier_version(dsname, 4636 SPA_VERSION_GZIP_COMPRESSION)) { 4637 return (SET_ERROR(ENOTSUP)); 4638 } 4639 4640 if (compval == ZIO_COMPRESS_ZLE && 4641 zfs_earlier_version(dsname, 4642 SPA_VERSION_ZLE_COMPRESSION)) 4643 return (SET_ERROR(ENOTSUP)); 4644 4645 if (compval == ZIO_COMPRESS_LZ4) { 4646 spa_t *spa; 4647 4648 if ((err = spa_open(dsname, &spa, FTAG)) != 0) 4649 return (err); 4650 4651 if (!spa_feature_is_enabled(spa, 4652 SPA_FEATURE_LZ4_COMPRESS)) { 4653 spa_close(spa, FTAG); 4654 return (SET_ERROR(ENOTSUP)); 4655 } 4656 spa_close(spa, FTAG); 4657 } 4658 4659 if (compval == ZIO_COMPRESS_ZSTD) { 4660 spa_t *spa; 4661 4662 if ((err = spa_open(dsname, &spa, FTAG)) != 0) 4663 return (err); 4664 4665 if (!spa_feature_is_enabled(spa, 4666 SPA_FEATURE_ZSTD_COMPRESS)) { 4667 spa_close(spa, FTAG); 4668 return (SET_ERROR(ENOTSUP)); 4669 } 4670 spa_close(spa, FTAG); 4671 } 4672 } 4673 break; 4674 4675 case ZFS_PROP_COPIES: 4676 if (zfs_earlier_version(dsname, SPA_VERSION_DITTO_BLOCKS)) 4677 return (SET_ERROR(ENOTSUP)); 4678 break; 4679 4680 case ZFS_PROP_VOLBLOCKSIZE: 4681 case ZFS_PROP_RECORDSIZE: 4682 /* Record sizes above 128k need the feature to be enabled */ 4683 if (nvpair_value_uint64(pair, &intval) == 0 && 4684 intval > SPA_OLD_MAXBLOCKSIZE) { 4685 spa_t *spa; 4686 4687 /* 4688 * We don't allow setting the property above 1MB, 4689 * unless the tunable has been changed. 4690 */ 4691 if (intval > zfs_max_recordsize || 4692 intval > SPA_MAXBLOCKSIZE) 4693 return (SET_ERROR(ERANGE)); 4694 4695 if ((err = spa_open(dsname, &spa, FTAG)) != 0) 4696 return (err); 4697 4698 if (!spa_feature_is_enabled(spa, 4699 SPA_FEATURE_LARGE_BLOCKS)) { 4700 spa_close(spa, FTAG); 4701 return (SET_ERROR(ENOTSUP)); 4702 } 4703 spa_close(spa, FTAG); 4704 } 4705 break; 4706 4707 case ZFS_PROP_DNODESIZE: 4708 /* Dnode sizes above 512 need the feature to be enabled */ 4709 if (nvpair_value_uint64(pair, &intval) == 0 && 4710 intval != ZFS_DNSIZE_LEGACY) { 4711 spa_t *spa; 4712 4713 if ((err = spa_open(dsname, &spa, FTAG)) != 0) 4714 return (err); 4715 4716 if (!spa_feature_is_enabled(spa, 4717 SPA_FEATURE_LARGE_DNODE)) { 4718 spa_close(spa, FTAG); 4719 return (SET_ERROR(ENOTSUP)); 4720 } 4721 spa_close(spa, FTAG); 4722 } 4723 break; 4724 4725 case ZFS_PROP_SPECIAL_SMALL_BLOCKS: 4726 /* 4727 * This property could require the allocation classes 4728 * feature to be active for setting, however we allow 4729 * it so that tests of settable properties succeed. 4730 * The CLI will issue a warning in this case. 4731 */ 4732 break; 4733 4734 case ZFS_PROP_SHARESMB: 4735 if (zpl_earlier_version(dsname, ZPL_VERSION_FUID)) 4736 return (SET_ERROR(ENOTSUP)); 4737 break; 4738 4739 case ZFS_PROP_ACLINHERIT: 4740 if (nvpair_type(pair) == DATA_TYPE_UINT64 && 4741 nvpair_value_uint64(pair, &intval) == 0) { 4742 if (intval == ZFS_ACL_PASSTHROUGH_X && 4743 zfs_earlier_version(dsname, 4744 SPA_VERSION_PASSTHROUGH_X)) 4745 return (SET_ERROR(ENOTSUP)); 4746 } 4747 break; 4748 case ZFS_PROP_CHECKSUM: 4749 case ZFS_PROP_DEDUP: 4750 { 4751 spa_feature_t feature; 4752 spa_t *spa; 4753 int err; 4754 4755 /* dedup feature version checks */ 4756 if (prop == ZFS_PROP_DEDUP && 4757 zfs_earlier_version(dsname, SPA_VERSION_DEDUP)) 4758 return (SET_ERROR(ENOTSUP)); 4759 4760 if (nvpair_type(pair) == DATA_TYPE_UINT64 && 4761 nvpair_value_uint64(pair, &intval) == 0) { 4762 /* check prop value is enabled in features */ 4763 feature = zio_checksum_to_feature( 4764 intval & ZIO_CHECKSUM_MASK); 4765 if (feature == SPA_FEATURE_NONE) 4766 break; 4767 4768 if ((err = spa_open(dsname, &spa, FTAG)) != 0) 4769 return (err); 4770 4771 if (!spa_feature_is_enabled(spa, feature)) { 4772 spa_close(spa, FTAG); 4773 return (SET_ERROR(ENOTSUP)); 4774 } 4775 spa_close(spa, FTAG); 4776 } 4777 break; 4778 } 4779 4780 default: 4781 break; 4782 } 4783 4784 return (zfs_secpolicy_setprop(dsname, prop, pair, CRED())); 4785 } 4786 4787 /* 4788 * Removes properties from the given props list that fail permission checks 4789 * needed to clear them and to restore them in case of a receive error. For each 4790 * property, make sure we have both set and inherit permissions. 4791 * 4792 * Returns the first error encountered if any permission checks fail. If the 4793 * caller provides a non-NULL errlist, it also gives the complete list of names 4794 * of all the properties that failed a permission check along with the 4795 * corresponding error numbers. The caller is responsible for freeing the 4796 * returned errlist. 4797 * 4798 * If every property checks out successfully, zero is returned and the list 4799 * pointed at by errlist is NULL. 4800 */ 4801 static int 4802 zfs_check_clearable(const char *dataset, nvlist_t *props, nvlist_t **errlist) 4803 { 4804 zfs_cmd_t *zc; 4805 nvpair_t *pair, *next_pair; 4806 nvlist_t *errors; 4807 int err, rv = 0; 4808 4809 if (props == NULL) 4810 return (0); 4811 4812 VERIFY(nvlist_alloc(&errors, NV_UNIQUE_NAME, KM_SLEEP) == 0); 4813 4814 zc = kmem_alloc(sizeof (zfs_cmd_t), KM_SLEEP); 4815 (void) strlcpy(zc->zc_name, dataset, sizeof (zc->zc_name)); 4816 pair = nvlist_next_nvpair(props, NULL); 4817 while (pair != NULL) { 4818 next_pair = nvlist_next_nvpair(props, pair); 4819 4820 (void) strlcpy(zc->zc_value, nvpair_name(pair), 4821 sizeof (zc->zc_value)); 4822 if ((err = zfs_check_settable(dataset, pair, CRED())) != 0 || 4823 (err = zfs_secpolicy_inherit_prop(zc, NULL, CRED())) != 0) { 4824 VERIFY(nvlist_remove_nvpair(props, pair) == 0); 4825 VERIFY(nvlist_add_int32(errors, 4826 zc->zc_value, err) == 0); 4827 } 4828 pair = next_pair; 4829 } 4830 kmem_free(zc, sizeof (zfs_cmd_t)); 4831 4832 if ((pair = nvlist_next_nvpair(errors, NULL)) == NULL) { 4833 nvlist_free(errors); 4834 errors = NULL; 4835 } else { 4836 VERIFY(nvpair_value_int32(pair, &rv) == 0); 4837 } 4838 4839 if (errlist == NULL) 4840 nvlist_free(errors); 4841 else 4842 *errlist = errors; 4843 4844 return (rv); 4845 } 4846 4847 static boolean_t 4848 propval_equals(nvpair_t *p1, nvpair_t *p2) 4849 { 4850 if (nvpair_type(p1) == DATA_TYPE_NVLIST) { 4851 /* dsl_prop_get_all_impl() format */ 4852 nvlist_t *attrs; 4853 VERIFY(nvpair_value_nvlist(p1, &attrs) == 0); 4854 VERIFY(nvlist_lookup_nvpair(attrs, ZPROP_VALUE, 4855 &p1) == 0); 4856 } 4857 4858 if (nvpair_type(p2) == DATA_TYPE_NVLIST) { 4859 nvlist_t *attrs; 4860 VERIFY(nvpair_value_nvlist(p2, &attrs) == 0); 4861 VERIFY(nvlist_lookup_nvpair(attrs, ZPROP_VALUE, 4862 &p2) == 0); 4863 } 4864 4865 if (nvpair_type(p1) != nvpair_type(p2)) 4866 return (B_FALSE); 4867 4868 if (nvpair_type(p1) == DATA_TYPE_STRING) { 4869 const char *valstr1, *valstr2; 4870 4871 VERIFY(nvpair_value_string(p1, &valstr1) == 0); 4872 VERIFY(nvpair_value_string(p2, &valstr2) == 0); 4873 return (strcmp(valstr1, valstr2) == 0); 4874 } else { 4875 uint64_t intval1, intval2; 4876 4877 VERIFY(nvpair_value_uint64(p1, &intval1) == 0); 4878 VERIFY(nvpair_value_uint64(p2, &intval2) == 0); 4879 return (intval1 == intval2); 4880 } 4881 } 4882 4883 /* 4884 * Remove properties from props if they are not going to change (as determined 4885 * by comparison with origprops). Remove them from origprops as well, since we 4886 * do not need to clear or restore properties that won't change. 4887 */ 4888 static void 4889 props_reduce(nvlist_t *props, nvlist_t *origprops) 4890 { 4891 nvpair_t *pair, *next_pair; 4892 4893 if (origprops == NULL) 4894 return; /* all props need to be received */ 4895 4896 pair = nvlist_next_nvpair(props, NULL); 4897 while (pair != NULL) { 4898 const char *propname = nvpair_name(pair); 4899 nvpair_t *match; 4900 4901 next_pair = nvlist_next_nvpair(props, pair); 4902 4903 if ((nvlist_lookup_nvpair(origprops, propname, 4904 &match) != 0) || !propval_equals(pair, match)) 4905 goto next; /* need to set received value */ 4906 4907 /* don't clear the existing received value */ 4908 (void) nvlist_remove_nvpair(origprops, match); 4909 /* don't bother receiving the property */ 4910 (void) nvlist_remove_nvpair(props, pair); 4911 next: 4912 pair = next_pair; 4913 } 4914 } 4915 4916 /* 4917 * Extract properties that cannot be set PRIOR to the receipt of a dataset. 4918 * For example, refquota cannot be set until after the receipt of a dataset, 4919 * because in replication streams, an older/earlier snapshot may exceed the 4920 * refquota. We want to receive the older/earlier snapshot, but setting 4921 * refquota pre-receipt will set the dsl's ACTUAL quota, which will prevent 4922 * the older/earlier snapshot from being received (with EDQUOT). 4923 * 4924 * The ZFS test "zfs_receive_011_pos" demonstrates such a scenario. 4925 * 4926 * libzfs will need to be judicious handling errors encountered by props 4927 * extracted by this function. 4928 */ 4929 static nvlist_t * 4930 extract_delay_props(nvlist_t *props) 4931 { 4932 nvlist_t *delayprops; 4933 nvpair_t *nvp, *tmp; 4934 static const zfs_prop_t delayable[] = { 4935 ZFS_PROP_REFQUOTA, 4936 ZFS_PROP_KEYLOCATION, 4937 /* 4938 * Setting ZFS_PROP_SHARESMB requires the objset type to be 4939 * known, which is not possible prior to receipt of raw sends. 4940 */ 4941 ZFS_PROP_SHARESMB, 4942 0 4943 }; 4944 int i; 4945 4946 VERIFY(nvlist_alloc(&delayprops, NV_UNIQUE_NAME, KM_SLEEP) == 0); 4947 4948 for (nvp = nvlist_next_nvpair(props, NULL); nvp != NULL; 4949 nvp = nvlist_next_nvpair(props, nvp)) { 4950 /* 4951 * strcmp() is safe because zfs_prop_to_name() always returns 4952 * a bounded string. 4953 */ 4954 for (i = 0; delayable[i] != 0; i++) { 4955 if (strcmp(zfs_prop_to_name(delayable[i]), 4956 nvpair_name(nvp)) == 0) { 4957 break; 4958 } 4959 } 4960 if (delayable[i] != 0) { 4961 tmp = nvlist_prev_nvpair(props, nvp); 4962 VERIFY(nvlist_add_nvpair(delayprops, nvp) == 0); 4963 VERIFY(nvlist_remove_nvpair(props, nvp) == 0); 4964 nvp = tmp; 4965 } 4966 } 4967 4968 if (nvlist_empty(delayprops)) { 4969 nvlist_free(delayprops); 4970 delayprops = NULL; 4971 } 4972 return (delayprops); 4973 } 4974 4975 static void 4976 zfs_allow_log_destroy(void *arg) 4977 { 4978 char *poolname = arg; 4979 4980 if (poolname != NULL) 4981 kmem_strfree(poolname); 4982 } 4983 4984 #ifdef ZFS_DEBUG 4985 static boolean_t zfs_ioc_recv_inject_err; 4986 #endif 4987 4988 /* 4989 * nvlist 'errors' is always allocated. It will contain descriptions of 4990 * encountered errors, if any. It's the callers responsibility to free. 4991 */ 4992 static int 4993 zfs_ioc_recv_impl(char *tofs, char *tosnap, const char *origin, 4994 nvlist_t *recvprops, nvlist_t *localprops, nvlist_t *hidden_args, 4995 boolean_t force, boolean_t heal, boolean_t resumable, int input_fd, 4996 dmu_replay_record_t *begin_record, uint64_t *read_bytes, 4997 uint64_t *errflags, nvlist_t **errors) 4998 { 4999 dmu_recv_cookie_t drc; 5000 int error = 0; 5001 int props_error = 0; 5002 offset_t off, noff; 5003 nvlist_t *local_delayprops = NULL; 5004 nvlist_t *recv_delayprops = NULL; 5005 nvlist_t *inherited_delayprops = NULL; 5006 nvlist_t *origprops = NULL; /* existing properties */ 5007 nvlist_t *origrecvd = NULL; /* existing received properties */ 5008 boolean_t first_recvd_props = B_FALSE; 5009 boolean_t tofs_was_redacted; 5010 zfs_file_t *input_fp; 5011 5012 *read_bytes = 0; 5013 *errflags = 0; 5014 *errors = fnvlist_alloc(); 5015 off = 0; 5016 5017 if ((input_fp = zfs_file_get(input_fd)) == NULL) 5018 return (SET_ERROR(EBADF)); 5019 5020 noff = off = zfs_file_off(input_fp); 5021 error = dmu_recv_begin(tofs, tosnap, begin_record, force, heal, 5022 resumable, localprops, hidden_args, origin, &drc, input_fp, 5023 &off); 5024 if (error != 0) 5025 goto out; 5026 tofs_was_redacted = dsl_get_redacted(drc.drc_ds); 5027 5028 /* 5029 * Set properties before we receive the stream so that they are applied 5030 * to the new data. Note that we must call dmu_recv_stream() if 5031 * dmu_recv_begin() succeeds. 5032 */ 5033 if (recvprops != NULL && !drc.drc_newfs) { 5034 if (spa_version(dsl_dataset_get_spa(drc.drc_ds)) >= 5035 SPA_VERSION_RECVD_PROPS && 5036 !dsl_prop_get_hasrecvd(tofs)) 5037 first_recvd_props = B_TRUE; 5038 5039 /* 5040 * If new received properties are supplied, they are to 5041 * completely replace the existing received properties, 5042 * so stash away the existing ones. 5043 */ 5044 if (dsl_prop_get_received(tofs, &origrecvd) == 0) { 5045 nvlist_t *errlist = NULL; 5046 /* 5047 * Don't bother writing a property if its value won't 5048 * change (and avoid the unnecessary security checks). 5049 * 5050 * The first receive after SPA_VERSION_RECVD_PROPS is a 5051 * special case where we blow away all local properties 5052 * regardless. 5053 */ 5054 if (!first_recvd_props) 5055 props_reduce(recvprops, origrecvd); 5056 if (zfs_check_clearable(tofs, origrecvd, &errlist) != 0) 5057 (void) nvlist_merge(*errors, errlist, 0); 5058 nvlist_free(errlist); 5059 5060 if (clear_received_props(tofs, origrecvd, 5061 first_recvd_props ? NULL : recvprops) != 0) 5062 *errflags |= ZPROP_ERR_NOCLEAR; 5063 } else { 5064 *errflags |= ZPROP_ERR_NOCLEAR; 5065 } 5066 } 5067 5068 /* 5069 * Stash away existing properties so we can restore them on error unless 5070 * we're doing the first receive after SPA_VERSION_RECVD_PROPS, in which 5071 * case "origrecvd" will take care of that. 5072 */ 5073 if (localprops != NULL && !drc.drc_newfs && !first_recvd_props) { 5074 objset_t *os; 5075 if (dmu_objset_hold(tofs, FTAG, &os) == 0) { 5076 if (dsl_prop_get_all(os, &origprops) != 0) { 5077 *errflags |= ZPROP_ERR_NOCLEAR; 5078 } 5079 dmu_objset_rele(os, FTAG); 5080 } else { 5081 *errflags |= ZPROP_ERR_NOCLEAR; 5082 } 5083 } 5084 5085 if (recvprops != NULL) { 5086 props_error = dsl_prop_set_hasrecvd(tofs); 5087 5088 if (props_error == 0) { 5089 recv_delayprops = extract_delay_props(recvprops); 5090 (void) zfs_set_prop_nvlist(tofs, ZPROP_SRC_RECEIVED, 5091 recvprops, *errors); 5092 } 5093 } 5094 5095 if (localprops != NULL) { 5096 nvlist_t *oprops = fnvlist_alloc(); 5097 nvlist_t *xprops = fnvlist_alloc(); 5098 nvpair_t *nvp = NULL; 5099 5100 while ((nvp = nvlist_next_nvpair(localprops, nvp)) != NULL) { 5101 if (nvpair_type(nvp) == DATA_TYPE_BOOLEAN) { 5102 /* -x property */ 5103 const char *name = nvpair_name(nvp); 5104 zfs_prop_t prop = zfs_name_to_prop(name); 5105 if (prop != ZPROP_USERPROP) { 5106 if (!zfs_prop_inheritable(prop)) 5107 continue; 5108 } else if (!zfs_prop_user(name)) 5109 continue; 5110 fnvlist_add_boolean(xprops, name); 5111 } else { 5112 /* -o property=value */ 5113 fnvlist_add_nvpair(oprops, nvp); 5114 } 5115 } 5116 5117 local_delayprops = extract_delay_props(oprops); 5118 (void) zfs_set_prop_nvlist(tofs, ZPROP_SRC_LOCAL, 5119 oprops, *errors); 5120 inherited_delayprops = extract_delay_props(xprops); 5121 (void) zfs_set_prop_nvlist(tofs, ZPROP_SRC_INHERITED, 5122 xprops, *errors); 5123 5124 nvlist_free(oprops); 5125 nvlist_free(xprops); 5126 } 5127 5128 error = dmu_recv_stream(&drc, &off); 5129 5130 if (error == 0) { 5131 zfsvfs_t *zfsvfs = NULL; 5132 zvol_state_handle_t *zv = NULL; 5133 5134 if (getzfsvfs(tofs, &zfsvfs) == 0) { 5135 /* online recv */ 5136 dsl_dataset_t *ds; 5137 int end_err; 5138 boolean_t stream_is_redacted = DMU_GET_FEATUREFLAGS( 5139 begin_record->drr_u.drr_begin. 5140 drr_versioninfo) & DMU_BACKUP_FEATURE_REDACTED; 5141 5142 ds = dmu_objset_ds(zfsvfs->z_os); 5143 error = zfs_suspend_fs(zfsvfs); 5144 /* 5145 * If the suspend fails, then the recv_end will 5146 * likely also fail, and clean up after itself. 5147 */ 5148 end_err = dmu_recv_end(&drc, zfsvfs); 5149 /* 5150 * If the dataset was not redacted, but we received a 5151 * redacted stream onto it, we need to unmount the 5152 * dataset. Otherwise, resume the filesystem. 5153 */ 5154 if (error == 0 && !drc.drc_newfs && 5155 stream_is_redacted && !tofs_was_redacted) { 5156 error = zfs_end_fs(zfsvfs, ds); 5157 } else if (error == 0) { 5158 error = zfs_resume_fs(zfsvfs, ds); 5159 } 5160 error = error ? error : end_err; 5161 zfs_vfs_rele(zfsvfs); 5162 } else if ((zv = zvol_suspend(tofs)) != NULL) { 5163 error = dmu_recv_end(&drc, zvol_tag(zv)); 5164 zvol_resume(zv); 5165 } else { 5166 error = dmu_recv_end(&drc, NULL); 5167 } 5168 5169 /* Set delayed properties now, after we're done receiving. */ 5170 if (recv_delayprops != NULL && error == 0) { 5171 (void) zfs_set_prop_nvlist(tofs, ZPROP_SRC_RECEIVED, 5172 recv_delayprops, *errors); 5173 } 5174 if (local_delayprops != NULL && error == 0) { 5175 (void) zfs_set_prop_nvlist(tofs, ZPROP_SRC_LOCAL, 5176 local_delayprops, *errors); 5177 } 5178 if (inherited_delayprops != NULL && error == 0) { 5179 (void) zfs_set_prop_nvlist(tofs, ZPROP_SRC_INHERITED, 5180 inherited_delayprops, *errors); 5181 } 5182 } 5183 5184 /* 5185 * Merge delayed props back in with initial props, in case 5186 * we're DEBUG and zfs_ioc_recv_inject_err is set (which means 5187 * we have to make sure clear_received_props() includes 5188 * the delayed properties). 5189 * 5190 * Since zfs_ioc_recv_inject_err is only in DEBUG kernels, 5191 * using ASSERT() will be just like a VERIFY. 5192 */ 5193 if (recv_delayprops != NULL) { 5194 ASSERT(nvlist_merge(recvprops, recv_delayprops, 0) == 0); 5195 nvlist_free(recv_delayprops); 5196 } 5197 if (local_delayprops != NULL) { 5198 ASSERT(nvlist_merge(localprops, local_delayprops, 0) == 0); 5199 nvlist_free(local_delayprops); 5200 } 5201 if (inherited_delayprops != NULL) { 5202 ASSERT(nvlist_merge(localprops, inherited_delayprops, 0) == 0); 5203 nvlist_free(inherited_delayprops); 5204 } 5205 *read_bytes = off - noff; 5206 5207 #ifdef ZFS_DEBUG 5208 if (zfs_ioc_recv_inject_err) { 5209 zfs_ioc_recv_inject_err = B_FALSE; 5210 error = 1; 5211 } 5212 #endif 5213 5214 /* 5215 * On error, restore the original props. 5216 */ 5217 if (error != 0 && recvprops != NULL && !drc.drc_newfs) { 5218 if (clear_received_props(tofs, recvprops, NULL) != 0) { 5219 /* 5220 * We failed to clear the received properties. 5221 * Since we may have left a $recvd value on the 5222 * system, we can't clear the $hasrecvd flag. 5223 */ 5224 *errflags |= ZPROP_ERR_NORESTORE; 5225 } else if (first_recvd_props) { 5226 dsl_prop_unset_hasrecvd(tofs); 5227 } 5228 5229 if (origrecvd == NULL && !drc.drc_newfs) { 5230 /* We failed to stash the original properties. */ 5231 *errflags |= ZPROP_ERR_NORESTORE; 5232 } 5233 5234 /* 5235 * dsl_props_set() will not convert RECEIVED to LOCAL on or 5236 * after SPA_VERSION_RECVD_PROPS, so we need to specify LOCAL 5237 * explicitly if we're restoring local properties cleared in the 5238 * first new-style receive. 5239 */ 5240 if (origrecvd != NULL && 5241 zfs_set_prop_nvlist(tofs, (first_recvd_props ? 5242 ZPROP_SRC_LOCAL : ZPROP_SRC_RECEIVED), 5243 origrecvd, NULL) != 0) { 5244 /* 5245 * We stashed the original properties but failed to 5246 * restore them. 5247 */ 5248 *errflags |= ZPROP_ERR_NORESTORE; 5249 } 5250 } 5251 if (error != 0 && localprops != NULL && !drc.drc_newfs && 5252 !first_recvd_props) { 5253 nvlist_t *setprops; 5254 nvlist_t *inheritprops; 5255 nvpair_t *nvp; 5256 5257 if (origprops == NULL) { 5258 /* We failed to stash the original properties. */ 5259 *errflags |= ZPROP_ERR_NORESTORE; 5260 goto out; 5261 } 5262 5263 /* Restore original props */ 5264 setprops = fnvlist_alloc(); 5265 inheritprops = fnvlist_alloc(); 5266 nvp = NULL; 5267 while ((nvp = nvlist_next_nvpair(localprops, nvp)) != NULL) { 5268 const char *name = nvpair_name(nvp); 5269 const char *source; 5270 nvlist_t *attrs; 5271 5272 if (!nvlist_exists(origprops, name)) { 5273 /* 5274 * Property was not present or was explicitly 5275 * inherited before the receive, restore this. 5276 */ 5277 fnvlist_add_boolean(inheritprops, name); 5278 continue; 5279 } 5280 attrs = fnvlist_lookup_nvlist(origprops, name); 5281 source = fnvlist_lookup_string(attrs, ZPROP_SOURCE); 5282 5283 /* Skip received properties */ 5284 if (strcmp(source, ZPROP_SOURCE_VAL_RECVD) == 0) 5285 continue; 5286 5287 if (strcmp(source, tofs) == 0) { 5288 /* Property was locally set */ 5289 fnvlist_add_nvlist(setprops, name, attrs); 5290 } else { 5291 /* Property was implicitly inherited */ 5292 fnvlist_add_boolean(inheritprops, name); 5293 } 5294 } 5295 5296 if (zfs_set_prop_nvlist(tofs, ZPROP_SRC_LOCAL, setprops, 5297 NULL) != 0) 5298 *errflags |= ZPROP_ERR_NORESTORE; 5299 if (zfs_set_prop_nvlist(tofs, ZPROP_SRC_INHERITED, inheritprops, 5300 NULL) != 0) 5301 *errflags |= ZPROP_ERR_NORESTORE; 5302 5303 nvlist_free(setprops); 5304 nvlist_free(inheritprops); 5305 } 5306 out: 5307 zfs_file_put(input_fp); 5308 nvlist_free(origrecvd); 5309 nvlist_free(origprops); 5310 5311 if (error == 0) 5312 error = props_error; 5313 5314 return (error); 5315 } 5316 5317 /* 5318 * inputs: 5319 * zc_name name of containing filesystem (unused) 5320 * zc_nvlist_src{_size} nvlist of properties to apply 5321 * zc_nvlist_conf{_size} nvlist of properties to exclude 5322 * (DATA_TYPE_BOOLEAN) and override (everything else) 5323 * zc_value name of snapshot to create 5324 * zc_string name of clone origin (if DRR_FLAG_CLONE) 5325 * zc_cookie file descriptor to recv from 5326 * zc_begin_record the BEGIN record of the stream (not byteswapped) 5327 * zc_guid force flag 5328 * 5329 * outputs: 5330 * zc_cookie number of bytes read 5331 * zc_obj zprop_errflags_t 5332 * zc_nvlist_dst{_size} error for each unapplied received property 5333 */ 5334 static int 5335 zfs_ioc_recv(zfs_cmd_t *zc) 5336 { 5337 dmu_replay_record_t begin_record; 5338 nvlist_t *errors = NULL; 5339 nvlist_t *recvdprops = NULL; 5340 nvlist_t *localprops = NULL; 5341 const char *origin = NULL; 5342 char *tosnap; 5343 char tofs[ZFS_MAX_DATASET_NAME_LEN]; 5344 int error = 0; 5345 5346 if (dataset_namecheck(zc->zc_value, NULL, NULL) != 0 || 5347 strchr(zc->zc_value, '@') == NULL || 5348 strchr(zc->zc_value, '%')) 5349 return (SET_ERROR(EINVAL)); 5350 5351 (void) strlcpy(tofs, zc->zc_value, sizeof (tofs)); 5352 tosnap = strchr(tofs, '@'); 5353 *tosnap++ = '\0'; 5354 5355 if (zc->zc_nvlist_src != 0 && 5356 (error = get_nvlist(zc->zc_nvlist_src, zc->zc_nvlist_src_size, 5357 zc->zc_iflags, &recvdprops)) != 0) 5358 return (error); 5359 5360 if (zc->zc_nvlist_conf != 0 && 5361 (error = get_nvlist(zc->zc_nvlist_conf, zc->zc_nvlist_conf_size, 5362 zc->zc_iflags, &localprops)) != 0) 5363 return (error); 5364 5365 if (zc->zc_string[0]) 5366 origin = zc->zc_string; 5367 5368 begin_record.drr_type = DRR_BEGIN; 5369 begin_record.drr_payloadlen = 0; 5370 begin_record.drr_u.drr_begin = zc->zc_begin_record; 5371 5372 error = zfs_ioc_recv_impl(tofs, tosnap, origin, recvdprops, localprops, 5373 NULL, zc->zc_guid, B_FALSE, B_FALSE, zc->zc_cookie, &begin_record, 5374 &zc->zc_cookie, &zc->zc_obj, &errors); 5375 nvlist_free(recvdprops); 5376 nvlist_free(localprops); 5377 5378 /* 5379 * Now that all props, initial and delayed, are set, report the prop 5380 * errors to the caller. 5381 */ 5382 if (zc->zc_nvlist_dst_size != 0 && errors != NULL && 5383 (nvlist_smush(errors, zc->zc_nvlist_dst_size) != 0 || 5384 put_nvlist(zc, errors) != 0)) { 5385 /* 5386 * Caller made zc->zc_nvlist_dst less than the minimum expected 5387 * size or supplied an invalid address. 5388 */ 5389 error = SET_ERROR(EINVAL); 5390 } 5391 5392 nvlist_free(errors); 5393 5394 return (error); 5395 } 5396 5397 /* 5398 * innvl: { 5399 * "snapname" -> full name of the snapshot to create 5400 * (optional) "props" -> received properties to set (nvlist) 5401 * (optional) "localprops" -> override and exclude properties (nvlist) 5402 * (optional) "origin" -> name of clone origin (DRR_FLAG_CLONE) 5403 * "begin_record" -> non-byteswapped dmu_replay_record_t 5404 * "input_fd" -> file descriptor to read stream from (int32) 5405 * (optional) "force" -> force flag (value ignored) 5406 * (optional) "heal" -> use send stream to heal data corruption 5407 * (optional) "resumable" -> resumable flag (value ignored) 5408 * (optional) "cleanup_fd" -> unused 5409 * (optional) "action_handle" -> unused 5410 * (optional) "hidden_args" -> { "wkeydata" -> value } 5411 * } 5412 * 5413 * outnvl: { 5414 * "read_bytes" -> number of bytes read 5415 * "error_flags" -> zprop_errflags_t 5416 * "errors" -> error for each unapplied received property (nvlist) 5417 * } 5418 */ 5419 static const zfs_ioc_key_t zfs_keys_recv_new[] = { 5420 {"snapname", DATA_TYPE_STRING, 0}, 5421 {"props", DATA_TYPE_NVLIST, ZK_OPTIONAL}, 5422 {"localprops", DATA_TYPE_NVLIST, ZK_OPTIONAL}, 5423 {"origin", DATA_TYPE_STRING, ZK_OPTIONAL}, 5424 {"begin_record", DATA_TYPE_BYTE_ARRAY, 0}, 5425 {"input_fd", DATA_TYPE_INT32, 0}, 5426 {"force", DATA_TYPE_BOOLEAN, ZK_OPTIONAL}, 5427 {"heal", DATA_TYPE_BOOLEAN, ZK_OPTIONAL}, 5428 {"resumable", DATA_TYPE_BOOLEAN, ZK_OPTIONAL}, 5429 {"cleanup_fd", DATA_TYPE_INT32, ZK_OPTIONAL}, 5430 {"action_handle", DATA_TYPE_UINT64, ZK_OPTIONAL}, 5431 {"hidden_args", DATA_TYPE_NVLIST, ZK_OPTIONAL}, 5432 }; 5433 5434 static int 5435 zfs_ioc_recv_new(const char *fsname, nvlist_t *innvl, nvlist_t *outnvl) 5436 { 5437 dmu_replay_record_t *begin_record; 5438 uint_t begin_record_size; 5439 nvlist_t *errors = NULL; 5440 nvlist_t *recvprops = NULL; 5441 nvlist_t *localprops = NULL; 5442 nvlist_t *hidden_args = NULL; 5443 const char *snapname; 5444 const char *origin = NULL; 5445 char *tosnap; 5446 char tofs[ZFS_MAX_DATASET_NAME_LEN]; 5447 boolean_t force; 5448 boolean_t heal; 5449 boolean_t resumable; 5450 uint64_t read_bytes = 0; 5451 uint64_t errflags = 0; 5452 int input_fd = -1; 5453 int error; 5454 5455 snapname = fnvlist_lookup_string(innvl, "snapname"); 5456 5457 if (dataset_namecheck(snapname, NULL, NULL) != 0 || 5458 strchr(snapname, '@') == NULL || 5459 strchr(snapname, '%')) 5460 return (SET_ERROR(EINVAL)); 5461 5462 (void) strlcpy(tofs, snapname, sizeof (tofs)); 5463 tosnap = strchr(tofs, '@'); 5464 *tosnap++ = '\0'; 5465 5466 error = nvlist_lookup_string(innvl, "origin", &origin); 5467 if (error && error != ENOENT) 5468 return (error); 5469 5470 error = nvlist_lookup_byte_array(innvl, "begin_record", 5471 (uchar_t **)&begin_record, &begin_record_size); 5472 if (error != 0 || begin_record_size != sizeof (*begin_record)) 5473 return (SET_ERROR(EINVAL)); 5474 5475 input_fd = fnvlist_lookup_int32(innvl, "input_fd"); 5476 5477 force = nvlist_exists(innvl, "force"); 5478 heal = nvlist_exists(innvl, "heal"); 5479 resumable = nvlist_exists(innvl, "resumable"); 5480 5481 /* we still use "props" here for backwards compatibility */ 5482 error = nvlist_lookup_nvlist(innvl, "props", &recvprops); 5483 if (error && error != ENOENT) 5484 return (error); 5485 5486 error = nvlist_lookup_nvlist(innvl, "localprops", &localprops); 5487 if (error && error != ENOENT) 5488 return (error); 5489 5490 error = nvlist_lookup_nvlist(innvl, ZPOOL_HIDDEN_ARGS, &hidden_args); 5491 if (error && error != ENOENT) 5492 return (error); 5493 5494 error = zfs_ioc_recv_impl(tofs, tosnap, origin, recvprops, localprops, 5495 hidden_args, force, heal, resumable, input_fd, begin_record, 5496 &read_bytes, &errflags, &errors); 5497 5498 fnvlist_add_uint64(outnvl, "read_bytes", read_bytes); 5499 fnvlist_add_uint64(outnvl, "error_flags", errflags); 5500 fnvlist_add_nvlist(outnvl, "errors", errors); 5501 5502 nvlist_free(errors); 5503 nvlist_free(recvprops); 5504 nvlist_free(localprops); 5505 5506 return (error); 5507 } 5508 5509 typedef struct dump_bytes_io { 5510 zfs_file_t *dbi_fp; 5511 caddr_t dbi_buf; 5512 int dbi_len; 5513 int dbi_err; 5514 } dump_bytes_io_t; 5515 5516 static void 5517 dump_bytes_cb(void *arg) 5518 { 5519 dump_bytes_io_t *dbi = (dump_bytes_io_t *)arg; 5520 zfs_file_t *fp; 5521 caddr_t buf; 5522 5523 fp = dbi->dbi_fp; 5524 buf = dbi->dbi_buf; 5525 5526 dbi->dbi_err = zfs_file_write(fp, buf, dbi->dbi_len, NULL); 5527 } 5528 5529 static int 5530 dump_bytes(objset_t *os, void *buf, int len, void *arg) 5531 { 5532 dump_bytes_io_t dbi; 5533 5534 dbi.dbi_fp = arg; 5535 dbi.dbi_buf = buf; 5536 dbi.dbi_len = len; 5537 5538 #if defined(HAVE_LARGE_STACKS) 5539 dump_bytes_cb(&dbi); 5540 #else 5541 /* 5542 * The vn_rdwr() call is performed in a taskq to ensure that there is 5543 * always enough stack space to write safely to the target filesystem. 5544 * The ZIO_TYPE_FREE threads are used because there can be a lot of 5545 * them and they are used in vdev_file.c for a similar purpose. 5546 */ 5547 spa_taskq_dispatch_sync(dmu_objset_spa(os), ZIO_TYPE_FREE, 5548 ZIO_TASKQ_ISSUE, dump_bytes_cb, &dbi, TQ_SLEEP); 5549 #endif /* HAVE_LARGE_STACKS */ 5550 5551 return (dbi.dbi_err); 5552 } 5553 5554 /* 5555 * inputs: 5556 * zc_name name of snapshot to send 5557 * zc_cookie file descriptor to send stream to 5558 * zc_obj fromorigin flag (mutually exclusive with zc_fromobj) 5559 * zc_sendobj objsetid of snapshot to send 5560 * zc_fromobj objsetid of incremental fromsnap (may be zero) 5561 * zc_guid if set, estimate size of stream only. zc_cookie is ignored. 5562 * output size in zc_objset_type. 5563 * zc_flags lzc_send_flags 5564 * 5565 * outputs: 5566 * zc_objset_type estimated size, if zc_guid is set 5567 * 5568 * NOTE: This is no longer the preferred interface, any new functionality 5569 * should be added to zfs_ioc_send_new() instead. 5570 */ 5571 static int 5572 zfs_ioc_send(zfs_cmd_t *zc) 5573 { 5574 int error; 5575 offset_t off; 5576 boolean_t estimate = (zc->zc_guid != 0); 5577 boolean_t embedok = (zc->zc_flags & 0x1); 5578 boolean_t large_block_ok = (zc->zc_flags & 0x2); 5579 boolean_t compressok = (zc->zc_flags & 0x4); 5580 boolean_t rawok = (zc->zc_flags & 0x8); 5581 boolean_t savedok = (zc->zc_flags & 0x10); 5582 5583 if (zc->zc_obj != 0) { 5584 dsl_pool_t *dp; 5585 dsl_dataset_t *tosnap; 5586 5587 error = dsl_pool_hold(zc->zc_name, FTAG, &dp); 5588 if (error != 0) 5589 return (error); 5590 5591 error = dsl_dataset_hold_obj(dp, zc->zc_sendobj, FTAG, &tosnap); 5592 if (error != 0) { 5593 dsl_pool_rele(dp, FTAG); 5594 return (error); 5595 } 5596 5597 if (dsl_dir_is_clone(tosnap->ds_dir)) 5598 zc->zc_fromobj = 5599 dsl_dir_phys(tosnap->ds_dir)->dd_origin_obj; 5600 dsl_dataset_rele(tosnap, FTAG); 5601 dsl_pool_rele(dp, FTAG); 5602 } 5603 5604 if (estimate) { 5605 dsl_pool_t *dp; 5606 dsl_dataset_t *tosnap; 5607 dsl_dataset_t *fromsnap = NULL; 5608 5609 error = dsl_pool_hold(zc->zc_name, FTAG, &dp); 5610 if (error != 0) 5611 return (error); 5612 5613 error = dsl_dataset_hold_obj(dp, zc->zc_sendobj, 5614 FTAG, &tosnap); 5615 if (error != 0) { 5616 dsl_pool_rele(dp, FTAG); 5617 return (error); 5618 } 5619 5620 if (zc->zc_fromobj != 0) { 5621 error = dsl_dataset_hold_obj(dp, zc->zc_fromobj, 5622 FTAG, &fromsnap); 5623 if (error != 0) { 5624 dsl_dataset_rele(tosnap, FTAG); 5625 dsl_pool_rele(dp, FTAG); 5626 return (error); 5627 } 5628 } 5629 5630 error = dmu_send_estimate_fast(tosnap, fromsnap, NULL, 5631 compressok || rawok, savedok, &zc->zc_objset_type); 5632 5633 if (fromsnap != NULL) 5634 dsl_dataset_rele(fromsnap, FTAG); 5635 dsl_dataset_rele(tosnap, FTAG); 5636 dsl_pool_rele(dp, FTAG); 5637 } else { 5638 zfs_file_t *fp; 5639 dmu_send_outparams_t out = {0}; 5640 5641 if ((fp = zfs_file_get(zc->zc_cookie)) == NULL) 5642 return (SET_ERROR(EBADF)); 5643 5644 off = zfs_file_off(fp); 5645 out.dso_outfunc = dump_bytes; 5646 out.dso_arg = fp; 5647 out.dso_dryrun = B_FALSE; 5648 error = dmu_send_obj(zc->zc_name, zc->zc_sendobj, 5649 zc->zc_fromobj, embedok, large_block_ok, compressok, 5650 rawok, savedok, zc->zc_cookie, &off, &out); 5651 5652 zfs_file_put(fp); 5653 } 5654 return (error); 5655 } 5656 5657 /* 5658 * inputs: 5659 * zc_name name of snapshot on which to report progress 5660 * zc_cookie file descriptor of send stream 5661 * 5662 * outputs: 5663 * zc_cookie number of bytes written in send stream thus far 5664 * zc_objset_type logical size of data traversed by send thus far 5665 */ 5666 static int 5667 zfs_ioc_send_progress(zfs_cmd_t *zc) 5668 { 5669 dsl_pool_t *dp; 5670 dsl_dataset_t *ds; 5671 dmu_sendstatus_t *dsp = NULL; 5672 int error; 5673 5674 error = dsl_pool_hold(zc->zc_name, FTAG, &dp); 5675 if (error != 0) 5676 return (error); 5677 5678 error = dsl_dataset_hold(dp, zc->zc_name, FTAG, &ds); 5679 if (error != 0) { 5680 dsl_pool_rele(dp, FTAG); 5681 return (error); 5682 } 5683 5684 mutex_enter(&ds->ds_sendstream_lock); 5685 5686 /* 5687 * Iterate over all the send streams currently active on this dataset. 5688 * If there's one which matches the specified file descriptor _and_ the 5689 * stream was started by the current process, return the progress of 5690 * that stream. 5691 */ 5692 5693 for (dsp = list_head(&ds->ds_sendstreams); dsp != NULL; 5694 dsp = list_next(&ds->ds_sendstreams, dsp)) { 5695 if (dsp->dss_outfd == zc->zc_cookie && 5696 zfs_proc_is_caller(dsp->dss_proc)) 5697 break; 5698 } 5699 5700 if (dsp != NULL) { 5701 zc->zc_cookie = atomic_cas_64((volatile uint64_t *)dsp->dss_off, 5702 0, 0); 5703 /* This is the closest thing we have to atomic_read_64. */ 5704 zc->zc_objset_type = atomic_cas_64(&dsp->dss_blocks, 0, 0); 5705 } else { 5706 error = SET_ERROR(ENOENT); 5707 } 5708 5709 mutex_exit(&ds->ds_sendstream_lock); 5710 dsl_dataset_rele(ds, FTAG); 5711 dsl_pool_rele(dp, FTAG); 5712 return (error); 5713 } 5714 5715 static int 5716 zfs_ioc_inject_fault(zfs_cmd_t *zc) 5717 { 5718 int id, error; 5719 5720 error = zio_inject_fault(zc->zc_name, (int)zc->zc_guid, &id, 5721 &zc->zc_inject_record); 5722 5723 if (error == 0) 5724 zc->zc_guid = (uint64_t)id; 5725 5726 return (error); 5727 } 5728 5729 static int 5730 zfs_ioc_clear_fault(zfs_cmd_t *zc) 5731 { 5732 return (zio_clear_fault((int)zc->zc_guid)); 5733 } 5734 5735 static int 5736 zfs_ioc_inject_list_next(zfs_cmd_t *zc) 5737 { 5738 int id = (int)zc->zc_guid; 5739 int error; 5740 5741 error = zio_inject_list_next(&id, zc->zc_name, sizeof (zc->zc_name), 5742 &zc->zc_inject_record); 5743 5744 zc->zc_guid = id; 5745 5746 return (error); 5747 } 5748 5749 static int 5750 zfs_ioc_error_log(zfs_cmd_t *zc) 5751 { 5752 spa_t *spa; 5753 int error; 5754 5755 if ((error = spa_open(zc->zc_name, &spa, FTAG)) != 0) 5756 return (error); 5757 5758 error = spa_get_errlog(spa, (void *)(uintptr_t)zc->zc_nvlist_dst, 5759 &zc->zc_nvlist_dst_size); 5760 5761 spa_close(spa, FTAG); 5762 5763 return (error); 5764 } 5765 5766 static int 5767 zfs_ioc_clear(zfs_cmd_t *zc) 5768 { 5769 spa_t *spa; 5770 vdev_t *vd; 5771 int error; 5772 5773 /* 5774 * On zpool clear we also fix up missing slogs 5775 */ 5776 mutex_enter(&spa_namespace_lock); 5777 spa = spa_lookup(zc->zc_name); 5778 if (spa == NULL) { 5779 mutex_exit(&spa_namespace_lock); 5780 return (SET_ERROR(EIO)); 5781 } 5782 if (spa_get_log_state(spa) == SPA_LOG_MISSING) { 5783 /* we need to let spa_open/spa_load clear the chains */ 5784 spa_set_log_state(spa, SPA_LOG_CLEAR); 5785 } 5786 spa->spa_last_open_failed = 0; 5787 mutex_exit(&spa_namespace_lock); 5788 5789 if (zc->zc_cookie & ZPOOL_NO_REWIND) { 5790 error = spa_open(zc->zc_name, &spa, FTAG); 5791 } else { 5792 nvlist_t *policy; 5793 nvlist_t *config = NULL; 5794 5795 if (zc->zc_nvlist_src == 0) 5796 return (SET_ERROR(EINVAL)); 5797 5798 if ((error = get_nvlist(zc->zc_nvlist_src, 5799 zc->zc_nvlist_src_size, zc->zc_iflags, &policy)) == 0) { 5800 error = spa_open_rewind(zc->zc_name, &spa, FTAG, 5801 policy, &config); 5802 if (config != NULL) { 5803 int err; 5804 5805 if ((err = put_nvlist(zc, config)) != 0) 5806 error = err; 5807 nvlist_free(config); 5808 } 5809 nvlist_free(policy); 5810 } 5811 } 5812 5813 if (error != 0) 5814 return (error); 5815 5816 /* 5817 * If multihost is enabled, resuming I/O is unsafe as another 5818 * host may have imported the pool. 5819 */ 5820 if (spa_multihost(spa) && spa_suspended(spa)) 5821 return (SET_ERROR(EINVAL)); 5822 5823 spa_vdev_state_enter(spa, SCL_NONE); 5824 5825 if (zc->zc_guid == 0) { 5826 vd = NULL; 5827 } else { 5828 vd = spa_lookup_by_guid(spa, zc->zc_guid, B_TRUE); 5829 if (vd == NULL) { 5830 error = SET_ERROR(ENODEV); 5831 (void) spa_vdev_state_exit(spa, NULL, error); 5832 spa_close(spa, FTAG); 5833 return (error); 5834 } 5835 } 5836 5837 vdev_clear(spa, vd); 5838 5839 (void) spa_vdev_state_exit(spa, spa_suspended(spa) ? 5840 NULL : spa->spa_root_vdev, 0); 5841 5842 /* 5843 * Resume any suspended I/Os. 5844 */ 5845 if (zio_resume(spa) != 0) 5846 error = SET_ERROR(EIO); 5847 5848 spa_close(spa, FTAG); 5849 5850 return (error); 5851 } 5852 5853 /* 5854 * Reopen all the vdevs associated with the pool. 5855 * 5856 * innvl: { 5857 * "scrub_restart" -> when true and scrub is running, allow to restart 5858 * scrub as the side effect of the reopen (boolean). 5859 * } 5860 * 5861 * outnvl is unused 5862 */ 5863 static const zfs_ioc_key_t zfs_keys_pool_reopen[] = { 5864 {"scrub_restart", DATA_TYPE_BOOLEAN_VALUE, ZK_OPTIONAL}, 5865 }; 5866 5867 static int 5868 zfs_ioc_pool_reopen(const char *pool, nvlist_t *innvl, nvlist_t *outnvl) 5869 { 5870 (void) outnvl; 5871 spa_t *spa; 5872 int error; 5873 boolean_t rc, scrub_restart = B_TRUE; 5874 5875 if (innvl) { 5876 error = nvlist_lookup_boolean_value(innvl, 5877 "scrub_restart", &rc); 5878 if (error == 0) 5879 scrub_restart = rc; 5880 } 5881 5882 error = spa_open(pool, &spa, FTAG); 5883 if (error != 0) 5884 return (error); 5885 5886 spa_vdev_state_enter(spa, SCL_NONE); 5887 5888 /* 5889 * If the scrub_restart flag is B_FALSE and a scrub is already 5890 * in progress then set spa_scrub_reopen flag to B_TRUE so that 5891 * we don't restart the scrub as a side effect of the reopen. 5892 * Otherwise, let vdev_open() decided if a resilver is required. 5893 */ 5894 5895 spa->spa_scrub_reopen = (!scrub_restart && 5896 dsl_scan_scrubbing(spa->spa_dsl_pool)); 5897 vdev_reopen(spa->spa_root_vdev); 5898 spa->spa_scrub_reopen = B_FALSE; 5899 5900 (void) spa_vdev_state_exit(spa, NULL, 0); 5901 spa_close(spa, FTAG); 5902 return (0); 5903 } 5904 5905 /* 5906 * inputs: 5907 * zc_name name of filesystem 5908 * 5909 * outputs: 5910 * zc_string name of conflicting snapshot, if there is one 5911 */ 5912 static int 5913 zfs_ioc_promote(zfs_cmd_t *zc) 5914 { 5915 dsl_pool_t *dp; 5916 dsl_dataset_t *ds, *ods; 5917 char origin[ZFS_MAX_DATASET_NAME_LEN]; 5918 char *cp; 5919 int error; 5920 5921 zc->zc_name[sizeof (zc->zc_name) - 1] = '\0'; 5922 if (dataset_namecheck(zc->zc_name, NULL, NULL) != 0 || 5923 strchr(zc->zc_name, '%')) 5924 return (SET_ERROR(EINVAL)); 5925 5926 error = dsl_pool_hold(zc->zc_name, FTAG, &dp); 5927 if (error != 0) 5928 return (error); 5929 5930 error = dsl_dataset_hold(dp, zc->zc_name, FTAG, &ds); 5931 if (error != 0) { 5932 dsl_pool_rele(dp, FTAG); 5933 return (error); 5934 } 5935 5936 if (!dsl_dir_is_clone(ds->ds_dir)) { 5937 dsl_dataset_rele(ds, FTAG); 5938 dsl_pool_rele(dp, FTAG); 5939 return (SET_ERROR(EINVAL)); 5940 } 5941 5942 error = dsl_dataset_hold_obj(dp, 5943 dsl_dir_phys(ds->ds_dir)->dd_origin_obj, FTAG, &ods); 5944 if (error != 0) { 5945 dsl_dataset_rele(ds, FTAG); 5946 dsl_pool_rele(dp, FTAG); 5947 return (error); 5948 } 5949 5950 dsl_dataset_name(ods, origin); 5951 dsl_dataset_rele(ods, FTAG); 5952 dsl_dataset_rele(ds, FTAG); 5953 dsl_pool_rele(dp, FTAG); 5954 5955 /* 5956 * We don't need to unmount *all* the origin fs's snapshots, but 5957 * it's easier. 5958 */ 5959 cp = strchr(origin, '@'); 5960 if (cp) 5961 *cp = '\0'; 5962 (void) dmu_objset_find(origin, 5963 zfs_unmount_snap_cb, NULL, DS_FIND_SNAPSHOTS); 5964 return (dsl_dataset_promote(zc->zc_name, zc->zc_string)); 5965 } 5966 5967 /* 5968 * Retrieve a single {user|group|project}{used|quota}@... property. 5969 * 5970 * inputs: 5971 * zc_name name of filesystem 5972 * zc_objset_type zfs_userquota_prop_t 5973 * zc_value domain name (eg. "S-1-234-567-89") 5974 * zc_guid RID/UID/GID 5975 * 5976 * outputs: 5977 * zc_cookie property value 5978 */ 5979 static int 5980 zfs_ioc_userspace_one(zfs_cmd_t *zc) 5981 { 5982 zfsvfs_t *zfsvfs; 5983 int error; 5984 5985 if (zc->zc_objset_type >= ZFS_NUM_USERQUOTA_PROPS) 5986 return (SET_ERROR(EINVAL)); 5987 5988 error = zfsvfs_hold(zc->zc_name, FTAG, &zfsvfs, B_FALSE); 5989 if (error != 0) 5990 return (error); 5991 5992 error = zfs_userspace_one(zfsvfs, 5993 zc->zc_objset_type, zc->zc_value, zc->zc_guid, &zc->zc_cookie); 5994 zfsvfs_rele(zfsvfs, FTAG); 5995 5996 return (error); 5997 } 5998 5999 /* 6000 * inputs: 6001 * zc_name name of filesystem 6002 * zc_cookie zap cursor 6003 * zc_objset_type zfs_userquota_prop_t 6004 * zc_nvlist_dst[_size] buffer to fill (not really an nvlist) 6005 * 6006 * outputs: 6007 * zc_nvlist_dst[_size] data buffer (array of zfs_useracct_t) 6008 * zc_cookie zap cursor 6009 */ 6010 static int 6011 zfs_ioc_userspace_many(zfs_cmd_t *zc) 6012 { 6013 zfsvfs_t *zfsvfs; 6014 int bufsize = zc->zc_nvlist_dst_size; 6015 6016 if (bufsize <= 0) 6017 return (SET_ERROR(ENOMEM)); 6018 6019 int error = zfsvfs_hold(zc->zc_name, FTAG, &zfsvfs, B_FALSE); 6020 if (error != 0) 6021 return (error); 6022 6023 void *buf = vmem_alloc(bufsize, KM_SLEEP); 6024 6025 error = zfs_userspace_many(zfsvfs, zc->zc_objset_type, &zc->zc_cookie, 6026 buf, &zc->zc_nvlist_dst_size); 6027 6028 if (error == 0) { 6029 error = xcopyout(buf, 6030 (void *)(uintptr_t)zc->zc_nvlist_dst, 6031 zc->zc_nvlist_dst_size); 6032 } 6033 vmem_free(buf, bufsize); 6034 zfsvfs_rele(zfsvfs, FTAG); 6035 6036 return (error); 6037 } 6038 6039 /* 6040 * inputs: 6041 * zc_name name of filesystem 6042 * 6043 * outputs: 6044 * none 6045 */ 6046 static int 6047 zfs_ioc_userspace_upgrade(zfs_cmd_t *zc) 6048 { 6049 int error = 0; 6050 zfsvfs_t *zfsvfs; 6051 6052 if (getzfsvfs(zc->zc_name, &zfsvfs) == 0) { 6053 if (!dmu_objset_userused_enabled(zfsvfs->z_os)) { 6054 /* 6055 * If userused is not enabled, it may be because the 6056 * objset needs to be closed & reopened (to grow the 6057 * objset_phys_t). Suspend/resume the fs will do that. 6058 */ 6059 dsl_dataset_t *ds, *newds; 6060 6061 ds = dmu_objset_ds(zfsvfs->z_os); 6062 error = zfs_suspend_fs(zfsvfs); 6063 if (error == 0) { 6064 dmu_objset_refresh_ownership(ds, &newds, 6065 B_TRUE, zfsvfs); 6066 error = zfs_resume_fs(zfsvfs, newds); 6067 } 6068 } 6069 if (error == 0) { 6070 mutex_enter(&zfsvfs->z_os->os_upgrade_lock); 6071 if (zfsvfs->z_os->os_upgrade_id == 0) { 6072 /* clear potential error code and retry */ 6073 zfsvfs->z_os->os_upgrade_status = 0; 6074 mutex_exit(&zfsvfs->z_os->os_upgrade_lock); 6075 6076 dsl_pool_config_enter( 6077 dmu_objset_pool(zfsvfs->z_os), FTAG); 6078 dmu_objset_userspace_upgrade(zfsvfs->z_os); 6079 dsl_pool_config_exit( 6080 dmu_objset_pool(zfsvfs->z_os), FTAG); 6081 } else { 6082 mutex_exit(&zfsvfs->z_os->os_upgrade_lock); 6083 } 6084 6085 taskq_wait_id(zfsvfs->z_os->os_spa->spa_upgrade_taskq, 6086 zfsvfs->z_os->os_upgrade_id); 6087 error = zfsvfs->z_os->os_upgrade_status; 6088 } 6089 zfs_vfs_rele(zfsvfs); 6090 } else { 6091 objset_t *os; 6092 6093 /* XXX kind of reading contents without owning */ 6094 error = dmu_objset_hold_flags(zc->zc_name, B_TRUE, FTAG, &os); 6095 if (error != 0) 6096 return (error); 6097 6098 mutex_enter(&os->os_upgrade_lock); 6099 if (os->os_upgrade_id == 0) { 6100 /* clear potential error code and retry */ 6101 os->os_upgrade_status = 0; 6102 mutex_exit(&os->os_upgrade_lock); 6103 6104 dmu_objset_userspace_upgrade(os); 6105 } else { 6106 mutex_exit(&os->os_upgrade_lock); 6107 } 6108 6109 dsl_pool_rele(dmu_objset_pool(os), FTAG); 6110 6111 taskq_wait_id(os->os_spa->spa_upgrade_taskq, os->os_upgrade_id); 6112 error = os->os_upgrade_status; 6113 6114 dsl_dataset_rele_flags(dmu_objset_ds(os), DS_HOLD_FLAG_DECRYPT, 6115 FTAG); 6116 } 6117 return (error); 6118 } 6119 6120 /* 6121 * inputs: 6122 * zc_name name of filesystem 6123 * 6124 * outputs: 6125 * none 6126 */ 6127 static int 6128 zfs_ioc_id_quota_upgrade(zfs_cmd_t *zc) 6129 { 6130 objset_t *os; 6131 int error; 6132 6133 error = dmu_objset_hold_flags(zc->zc_name, B_TRUE, FTAG, &os); 6134 if (error != 0) 6135 return (error); 6136 6137 if (dmu_objset_userobjspace_upgradable(os) || 6138 dmu_objset_projectquota_upgradable(os)) { 6139 mutex_enter(&os->os_upgrade_lock); 6140 if (os->os_upgrade_id == 0) { 6141 /* clear potential error code and retry */ 6142 os->os_upgrade_status = 0; 6143 mutex_exit(&os->os_upgrade_lock); 6144 6145 dmu_objset_id_quota_upgrade(os); 6146 } else { 6147 mutex_exit(&os->os_upgrade_lock); 6148 } 6149 6150 dsl_pool_rele(dmu_objset_pool(os), FTAG); 6151 6152 taskq_wait_id(os->os_spa->spa_upgrade_taskq, os->os_upgrade_id); 6153 error = os->os_upgrade_status; 6154 } else { 6155 dsl_pool_rele(dmu_objset_pool(os), FTAG); 6156 } 6157 6158 dsl_dataset_rele_flags(dmu_objset_ds(os), DS_HOLD_FLAG_DECRYPT, FTAG); 6159 6160 return (error); 6161 } 6162 6163 static int 6164 zfs_ioc_share(zfs_cmd_t *zc) 6165 { 6166 return (SET_ERROR(ENOSYS)); 6167 } 6168 6169 /* 6170 * inputs: 6171 * zc_name name of containing filesystem 6172 * zc_obj object # beyond which we want next in-use object # 6173 * 6174 * outputs: 6175 * zc_obj next in-use object # 6176 */ 6177 static int 6178 zfs_ioc_next_obj(zfs_cmd_t *zc) 6179 { 6180 objset_t *os = NULL; 6181 int error; 6182 6183 error = dmu_objset_hold(zc->zc_name, FTAG, &os); 6184 if (error != 0) 6185 return (error); 6186 6187 error = dmu_object_next(os, &zc->zc_obj, B_FALSE, 0); 6188 6189 dmu_objset_rele(os, FTAG); 6190 return (error); 6191 } 6192 6193 /* 6194 * inputs: 6195 * zc_name name of filesystem 6196 * zc_value prefix name for snapshot 6197 * zc_cleanup_fd cleanup-on-exit file descriptor for calling process 6198 * 6199 * outputs: 6200 * zc_value short name of new snapshot 6201 */ 6202 static int 6203 zfs_ioc_tmp_snapshot(zfs_cmd_t *zc) 6204 { 6205 char *snap_name; 6206 char *hold_name; 6207 minor_t minor; 6208 6209 zfs_file_t *fp = zfs_onexit_fd_hold(zc->zc_cleanup_fd, &minor); 6210 if (fp == NULL) 6211 return (SET_ERROR(EBADF)); 6212 6213 snap_name = kmem_asprintf("%s-%016llx", zc->zc_value, 6214 (u_longlong_t)ddi_get_lbolt64()); 6215 hold_name = kmem_asprintf("%%%s", zc->zc_value); 6216 6217 int error = dsl_dataset_snapshot_tmp(zc->zc_name, snap_name, minor, 6218 hold_name); 6219 if (error == 0) 6220 (void) strlcpy(zc->zc_value, snap_name, 6221 sizeof (zc->zc_value)); 6222 kmem_strfree(snap_name); 6223 kmem_strfree(hold_name); 6224 zfs_onexit_fd_rele(fp); 6225 return (error); 6226 } 6227 6228 /* 6229 * inputs: 6230 * zc_name name of "to" snapshot 6231 * zc_value name of "from" snapshot 6232 * zc_cookie file descriptor to write diff data on 6233 * 6234 * outputs: 6235 * dmu_diff_record_t's to the file descriptor 6236 */ 6237 static int 6238 zfs_ioc_diff(zfs_cmd_t *zc) 6239 { 6240 zfs_file_t *fp; 6241 offset_t off; 6242 int error; 6243 6244 if ((fp = zfs_file_get(zc->zc_cookie)) == NULL) 6245 return (SET_ERROR(EBADF)); 6246 6247 off = zfs_file_off(fp); 6248 error = dmu_diff(zc->zc_name, zc->zc_value, fp, &off); 6249 6250 zfs_file_put(fp); 6251 6252 return (error); 6253 } 6254 6255 static int 6256 zfs_ioc_smb_acl(zfs_cmd_t *zc) 6257 { 6258 return (SET_ERROR(ENOTSUP)); 6259 } 6260 6261 /* 6262 * innvl: { 6263 * "holds" -> { snapname -> holdname (string), ... } 6264 * (optional) "cleanup_fd" -> fd (int32) 6265 * } 6266 * 6267 * outnvl: { 6268 * snapname -> error value (int32) 6269 * ... 6270 * } 6271 */ 6272 static const zfs_ioc_key_t zfs_keys_hold[] = { 6273 {"holds", DATA_TYPE_NVLIST, 0}, 6274 {"cleanup_fd", DATA_TYPE_INT32, ZK_OPTIONAL}, 6275 }; 6276 6277 static int 6278 zfs_ioc_hold(const char *pool, nvlist_t *args, nvlist_t *errlist) 6279 { 6280 (void) pool; 6281 nvpair_t *pair; 6282 nvlist_t *holds; 6283 int cleanup_fd = -1; 6284 int error; 6285 minor_t minor = 0; 6286 zfs_file_t *fp = NULL; 6287 6288 holds = fnvlist_lookup_nvlist(args, "holds"); 6289 6290 /* make sure the user didn't pass us any invalid (empty) tags */ 6291 for (pair = nvlist_next_nvpair(holds, NULL); pair != NULL; 6292 pair = nvlist_next_nvpair(holds, pair)) { 6293 const char *htag; 6294 6295 error = nvpair_value_string(pair, &htag); 6296 if (error != 0) 6297 return (SET_ERROR(error)); 6298 6299 if (strlen(htag) == 0) 6300 return (SET_ERROR(EINVAL)); 6301 } 6302 6303 if (nvlist_lookup_int32(args, "cleanup_fd", &cleanup_fd) == 0) { 6304 fp = zfs_onexit_fd_hold(cleanup_fd, &minor); 6305 if (fp == NULL) 6306 return (SET_ERROR(EBADF)); 6307 } 6308 6309 error = dsl_dataset_user_hold(holds, minor, errlist); 6310 if (fp != NULL) { 6311 ASSERT3U(minor, !=, 0); 6312 zfs_onexit_fd_rele(fp); 6313 } 6314 return (SET_ERROR(error)); 6315 } 6316 6317 /* 6318 * innvl is not used. 6319 * 6320 * outnvl: { 6321 * holdname -> time added (uint64 seconds since epoch) 6322 * ... 6323 * } 6324 */ 6325 static const zfs_ioc_key_t zfs_keys_get_holds[] = { 6326 /* no nvl keys */ 6327 }; 6328 6329 static int 6330 zfs_ioc_get_holds(const char *snapname, nvlist_t *args, nvlist_t *outnvl) 6331 { 6332 (void) args; 6333 return (dsl_dataset_get_holds(snapname, outnvl)); 6334 } 6335 6336 /* 6337 * innvl: { 6338 * snapname -> { holdname, ... } 6339 * ... 6340 * } 6341 * 6342 * outnvl: { 6343 * snapname -> error value (int32) 6344 * ... 6345 * } 6346 */ 6347 static const zfs_ioc_key_t zfs_keys_release[] = { 6348 {"<snapname>...", DATA_TYPE_NVLIST, ZK_WILDCARDLIST}, 6349 }; 6350 6351 static int 6352 zfs_ioc_release(const char *pool, nvlist_t *holds, nvlist_t *errlist) 6353 { 6354 (void) pool; 6355 return (dsl_dataset_user_release(holds, errlist)); 6356 } 6357 6358 /* 6359 * inputs: 6360 * zc_guid flags (ZEVENT_NONBLOCK) 6361 * zc_cleanup_fd zevent file descriptor 6362 * 6363 * outputs: 6364 * zc_nvlist_dst next nvlist event 6365 * zc_cookie dropped events since last get 6366 */ 6367 static int 6368 zfs_ioc_events_next(zfs_cmd_t *zc) 6369 { 6370 zfs_zevent_t *ze; 6371 nvlist_t *event = NULL; 6372 minor_t minor; 6373 uint64_t dropped = 0; 6374 int error; 6375 6376 zfs_file_t *fp = zfs_zevent_fd_hold(zc->zc_cleanup_fd, &minor, &ze); 6377 if (fp == NULL) 6378 return (SET_ERROR(EBADF)); 6379 6380 do { 6381 error = zfs_zevent_next(ze, &event, 6382 &zc->zc_nvlist_dst_size, &dropped); 6383 if (event != NULL) { 6384 zc->zc_cookie = dropped; 6385 error = put_nvlist(zc, event); 6386 nvlist_free(event); 6387 } 6388 6389 if (zc->zc_guid & ZEVENT_NONBLOCK) 6390 break; 6391 6392 if ((error == 0) || (error != ENOENT)) 6393 break; 6394 6395 error = zfs_zevent_wait(ze); 6396 if (error != 0) 6397 break; 6398 } while (1); 6399 6400 zfs_zevent_fd_rele(fp); 6401 6402 return (error); 6403 } 6404 6405 /* 6406 * outputs: 6407 * zc_cookie cleared events count 6408 */ 6409 static int 6410 zfs_ioc_events_clear(zfs_cmd_t *zc) 6411 { 6412 uint_t count; 6413 6414 zfs_zevent_drain_all(&count); 6415 zc->zc_cookie = count; 6416 6417 return (0); 6418 } 6419 6420 /* 6421 * inputs: 6422 * zc_guid eid | ZEVENT_SEEK_START | ZEVENT_SEEK_END 6423 * zc_cleanup zevent file descriptor 6424 */ 6425 static int 6426 zfs_ioc_events_seek(zfs_cmd_t *zc) 6427 { 6428 zfs_zevent_t *ze; 6429 minor_t minor; 6430 int error; 6431 6432 zfs_file_t *fp = zfs_zevent_fd_hold(zc->zc_cleanup_fd, &minor, &ze); 6433 if (fp == NULL) 6434 return (SET_ERROR(EBADF)); 6435 6436 error = zfs_zevent_seek(ze, zc->zc_guid); 6437 zfs_zevent_fd_rele(fp); 6438 6439 return (error); 6440 } 6441 6442 /* 6443 * inputs: 6444 * zc_name name of later filesystem or snapshot 6445 * zc_value full name of old snapshot or bookmark 6446 * 6447 * outputs: 6448 * zc_cookie space in bytes 6449 * zc_objset_type compressed space in bytes 6450 * zc_perm_action uncompressed space in bytes 6451 */ 6452 static int 6453 zfs_ioc_space_written(zfs_cmd_t *zc) 6454 { 6455 int error; 6456 dsl_pool_t *dp; 6457 dsl_dataset_t *new; 6458 6459 error = dsl_pool_hold(zc->zc_name, FTAG, &dp); 6460 if (error != 0) 6461 return (error); 6462 error = dsl_dataset_hold(dp, zc->zc_name, FTAG, &new); 6463 if (error != 0) { 6464 dsl_pool_rele(dp, FTAG); 6465 return (error); 6466 } 6467 if (strchr(zc->zc_value, '#') != NULL) { 6468 zfs_bookmark_phys_t bmp; 6469 error = dsl_bookmark_lookup(dp, zc->zc_value, 6470 new, &bmp); 6471 if (error == 0) { 6472 error = dsl_dataset_space_written_bookmark(&bmp, new, 6473 &zc->zc_cookie, 6474 &zc->zc_objset_type, &zc->zc_perm_action); 6475 } 6476 } else { 6477 dsl_dataset_t *old; 6478 error = dsl_dataset_hold(dp, zc->zc_value, FTAG, &old); 6479 6480 if (error == 0) { 6481 error = dsl_dataset_space_written(old, new, 6482 &zc->zc_cookie, 6483 &zc->zc_objset_type, &zc->zc_perm_action); 6484 dsl_dataset_rele(old, FTAG); 6485 } 6486 } 6487 dsl_dataset_rele(new, FTAG); 6488 dsl_pool_rele(dp, FTAG); 6489 return (error); 6490 } 6491 6492 /* 6493 * innvl: { 6494 * "firstsnap" -> snapshot name 6495 * } 6496 * 6497 * outnvl: { 6498 * "used" -> space in bytes 6499 * "compressed" -> compressed space in bytes 6500 * "uncompressed" -> uncompressed space in bytes 6501 * } 6502 */ 6503 static const zfs_ioc_key_t zfs_keys_space_snaps[] = { 6504 {"firstsnap", DATA_TYPE_STRING, 0}, 6505 }; 6506 6507 static int 6508 zfs_ioc_space_snaps(const char *lastsnap, nvlist_t *innvl, nvlist_t *outnvl) 6509 { 6510 int error; 6511 dsl_pool_t *dp; 6512 dsl_dataset_t *new, *old; 6513 const char *firstsnap; 6514 uint64_t used, comp, uncomp; 6515 6516 firstsnap = fnvlist_lookup_string(innvl, "firstsnap"); 6517 6518 error = dsl_pool_hold(lastsnap, FTAG, &dp); 6519 if (error != 0) 6520 return (error); 6521 6522 error = dsl_dataset_hold(dp, lastsnap, FTAG, &new); 6523 if (error == 0 && !new->ds_is_snapshot) { 6524 dsl_dataset_rele(new, FTAG); 6525 error = SET_ERROR(EINVAL); 6526 } 6527 if (error != 0) { 6528 dsl_pool_rele(dp, FTAG); 6529 return (error); 6530 } 6531 error = dsl_dataset_hold(dp, firstsnap, FTAG, &old); 6532 if (error == 0 && !old->ds_is_snapshot) { 6533 dsl_dataset_rele(old, FTAG); 6534 error = SET_ERROR(EINVAL); 6535 } 6536 if (error != 0) { 6537 dsl_dataset_rele(new, FTAG); 6538 dsl_pool_rele(dp, FTAG); 6539 return (error); 6540 } 6541 6542 error = dsl_dataset_space_wouldfree(old, new, &used, &comp, &uncomp); 6543 dsl_dataset_rele(old, FTAG); 6544 dsl_dataset_rele(new, FTAG); 6545 dsl_pool_rele(dp, FTAG); 6546 fnvlist_add_uint64(outnvl, "used", used); 6547 fnvlist_add_uint64(outnvl, "compressed", comp); 6548 fnvlist_add_uint64(outnvl, "uncompressed", uncomp); 6549 return (error); 6550 } 6551 6552 /* 6553 * innvl: { 6554 * "fd" -> file descriptor to write stream to (int32) 6555 * (optional) "fromsnap" -> full snap name to send an incremental from 6556 * (optional) "largeblockok" -> (value ignored) 6557 * indicates that blocks > 128KB are permitted 6558 * (optional) "embedok" -> (value ignored) 6559 * presence indicates DRR_WRITE_EMBEDDED records are permitted 6560 * (optional) "compressok" -> (value ignored) 6561 * presence indicates compressed DRR_WRITE records are permitted 6562 * (optional) "rawok" -> (value ignored) 6563 * presence indicates raw encrypted records should be used. 6564 * (optional) "savedok" -> (value ignored) 6565 * presence indicates we should send a partially received snapshot 6566 * (optional) "resume_object" and "resume_offset" -> (uint64) 6567 * if present, resume send stream from specified object and offset. 6568 * (optional) "redactbook" -> (string) 6569 * if present, use this bookmark's redaction list to generate a redacted 6570 * send stream 6571 * } 6572 * 6573 * outnvl is unused 6574 */ 6575 static const zfs_ioc_key_t zfs_keys_send_new[] = { 6576 {"fd", DATA_TYPE_INT32, 0}, 6577 {"fromsnap", DATA_TYPE_STRING, ZK_OPTIONAL}, 6578 {"largeblockok", DATA_TYPE_BOOLEAN, ZK_OPTIONAL}, 6579 {"embedok", DATA_TYPE_BOOLEAN, ZK_OPTIONAL}, 6580 {"compressok", DATA_TYPE_BOOLEAN, ZK_OPTIONAL}, 6581 {"rawok", DATA_TYPE_BOOLEAN, ZK_OPTIONAL}, 6582 {"savedok", DATA_TYPE_BOOLEAN, ZK_OPTIONAL}, 6583 {"resume_object", DATA_TYPE_UINT64, ZK_OPTIONAL}, 6584 {"resume_offset", DATA_TYPE_UINT64, ZK_OPTIONAL}, 6585 {"redactbook", DATA_TYPE_STRING, ZK_OPTIONAL}, 6586 }; 6587 6588 static int 6589 zfs_ioc_send_new(const char *snapname, nvlist_t *innvl, nvlist_t *outnvl) 6590 { 6591 (void) outnvl; 6592 int error; 6593 offset_t off; 6594 const char *fromname = NULL; 6595 int fd; 6596 zfs_file_t *fp; 6597 boolean_t largeblockok; 6598 boolean_t embedok; 6599 boolean_t compressok; 6600 boolean_t rawok; 6601 boolean_t savedok; 6602 uint64_t resumeobj = 0; 6603 uint64_t resumeoff = 0; 6604 const char *redactbook = NULL; 6605 6606 fd = fnvlist_lookup_int32(innvl, "fd"); 6607 6608 (void) nvlist_lookup_string(innvl, "fromsnap", &fromname); 6609 6610 largeblockok = nvlist_exists(innvl, "largeblockok"); 6611 embedok = nvlist_exists(innvl, "embedok"); 6612 compressok = nvlist_exists(innvl, "compressok"); 6613 rawok = nvlist_exists(innvl, "rawok"); 6614 savedok = nvlist_exists(innvl, "savedok"); 6615 6616 (void) nvlist_lookup_uint64(innvl, "resume_object", &resumeobj); 6617 (void) nvlist_lookup_uint64(innvl, "resume_offset", &resumeoff); 6618 6619 (void) nvlist_lookup_string(innvl, "redactbook", &redactbook); 6620 6621 if ((fp = zfs_file_get(fd)) == NULL) 6622 return (SET_ERROR(EBADF)); 6623 6624 off = zfs_file_off(fp); 6625 6626 dmu_send_outparams_t out = {0}; 6627 out.dso_outfunc = dump_bytes; 6628 out.dso_arg = fp; 6629 out.dso_dryrun = B_FALSE; 6630 error = dmu_send(snapname, fromname, embedok, largeblockok, 6631 compressok, rawok, savedok, resumeobj, resumeoff, 6632 redactbook, fd, &off, &out); 6633 6634 zfs_file_put(fp); 6635 return (error); 6636 } 6637 6638 static int 6639 send_space_sum(objset_t *os, void *buf, int len, void *arg) 6640 { 6641 (void) os, (void) buf; 6642 uint64_t *size = arg; 6643 6644 *size += len; 6645 return (0); 6646 } 6647 6648 /* 6649 * Determine approximately how large a zfs send stream will be -- the number 6650 * of bytes that will be written to the fd supplied to zfs_ioc_send_new(). 6651 * 6652 * innvl: { 6653 * (optional) "from" -> full snap or bookmark name to send an incremental 6654 * from 6655 * (optional) "largeblockok" -> (value ignored) 6656 * indicates that blocks > 128KB are permitted 6657 * (optional) "embedok" -> (value ignored) 6658 * presence indicates DRR_WRITE_EMBEDDED records are permitted 6659 * (optional) "compressok" -> (value ignored) 6660 * presence indicates compressed DRR_WRITE records are permitted 6661 * (optional) "rawok" -> (value ignored) 6662 * presence indicates raw encrypted records should be used. 6663 * (optional) "resume_object" and "resume_offset" -> (uint64) 6664 * if present, resume send stream from specified object and offset. 6665 * (optional) "fd" -> file descriptor to use as a cookie for progress 6666 * tracking (int32) 6667 * } 6668 * 6669 * outnvl: { 6670 * "space" -> bytes of space (uint64) 6671 * } 6672 */ 6673 static const zfs_ioc_key_t zfs_keys_send_space[] = { 6674 {"from", DATA_TYPE_STRING, ZK_OPTIONAL}, 6675 {"fromsnap", DATA_TYPE_STRING, ZK_OPTIONAL}, 6676 {"largeblockok", DATA_TYPE_BOOLEAN, ZK_OPTIONAL}, 6677 {"embedok", DATA_TYPE_BOOLEAN, ZK_OPTIONAL}, 6678 {"compressok", DATA_TYPE_BOOLEAN, ZK_OPTIONAL}, 6679 {"rawok", DATA_TYPE_BOOLEAN, ZK_OPTIONAL}, 6680 {"fd", DATA_TYPE_INT32, ZK_OPTIONAL}, 6681 {"redactbook", DATA_TYPE_STRING, ZK_OPTIONAL}, 6682 {"resume_object", DATA_TYPE_UINT64, ZK_OPTIONAL}, 6683 {"resume_offset", DATA_TYPE_UINT64, ZK_OPTIONAL}, 6684 {"bytes", DATA_TYPE_UINT64, ZK_OPTIONAL}, 6685 }; 6686 6687 static int 6688 zfs_ioc_send_space(const char *snapname, nvlist_t *innvl, nvlist_t *outnvl) 6689 { 6690 dsl_pool_t *dp; 6691 dsl_dataset_t *tosnap; 6692 dsl_dataset_t *fromsnap = NULL; 6693 int error; 6694 const char *fromname = NULL; 6695 const char *redactlist_book = NULL; 6696 boolean_t largeblockok; 6697 boolean_t embedok; 6698 boolean_t compressok; 6699 boolean_t rawok; 6700 boolean_t savedok; 6701 uint64_t space = 0; 6702 boolean_t full_estimate = B_FALSE; 6703 uint64_t resumeobj = 0; 6704 uint64_t resumeoff = 0; 6705 uint64_t resume_bytes = 0; 6706 int32_t fd = -1; 6707 zfs_bookmark_phys_t zbm = {0}; 6708 6709 error = dsl_pool_hold(snapname, FTAG, &dp); 6710 if (error != 0) 6711 return (error); 6712 6713 error = dsl_dataset_hold(dp, snapname, FTAG, &tosnap); 6714 if (error != 0) { 6715 dsl_pool_rele(dp, FTAG); 6716 return (error); 6717 } 6718 (void) nvlist_lookup_int32(innvl, "fd", &fd); 6719 6720 largeblockok = nvlist_exists(innvl, "largeblockok"); 6721 embedok = nvlist_exists(innvl, "embedok"); 6722 compressok = nvlist_exists(innvl, "compressok"); 6723 rawok = nvlist_exists(innvl, "rawok"); 6724 savedok = nvlist_exists(innvl, "savedok"); 6725 boolean_t from = (nvlist_lookup_string(innvl, "from", &fromname) == 0); 6726 boolean_t altbook = (nvlist_lookup_string(innvl, "redactbook", 6727 &redactlist_book) == 0); 6728 6729 (void) nvlist_lookup_uint64(innvl, "resume_object", &resumeobj); 6730 (void) nvlist_lookup_uint64(innvl, "resume_offset", &resumeoff); 6731 (void) nvlist_lookup_uint64(innvl, "bytes", &resume_bytes); 6732 6733 if (altbook) { 6734 full_estimate = B_TRUE; 6735 } else if (from) { 6736 if (strchr(fromname, '#')) { 6737 error = dsl_bookmark_lookup(dp, fromname, tosnap, &zbm); 6738 6739 /* 6740 * dsl_bookmark_lookup() will fail with EXDEV if 6741 * the from-bookmark and tosnap are at the same txg. 6742 * However, it's valid to do a send (and therefore, 6743 * a send estimate) from and to the same time point, 6744 * if the bookmark is redacted (the incremental send 6745 * can change what's redacted on the target). In 6746 * this case, dsl_bookmark_lookup() fills in zbm 6747 * but returns EXDEV. Ignore this error. 6748 */ 6749 if (error == EXDEV && zbm.zbm_redaction_obj != 0 && 6750 zbm.zbm_guid == 6751 dsl_dataset_phys(tosnap)->ds_guid) 6752 error = 0; 6753 6754 if (error != 0) { 6755 dsl_dataset_rele(tosnap, FTAG); 6756 dsl_pool_rele(dp, FTAG); 6757 return (error); 6758 } 6759 if (zbm.zbm_redaction_obj != 0 || !(zbm.zbm_flags & 6760 ZBM_FLAG_HAS_FBN)) { 6761 full_estimate = B_TRUE; 6762 } 6763 } else if (strchr(fromname, '@')) { 6764 error = dsl_dataset_hold(dp, fromname, FTAG, &fromsnap); 6765 if (error != 0) { 6766 dsl_dataset_rele(tosnap, FTAG); 6767 dsl_pool_rele(dp, FTAG); 6768 return (error); 6769 } 6770 6771 if (!dsl_dataset_is_before(tosnap, fromsnap, 0)) { 6772 full_estimate = B_TRUE; 6773 dsl_dataset_rele(fromsnap, FTAG); 6774 } 6775 } else { 6776 /* 6777 * from is not properly formatted as a snapshot or 6778 * bookmark 6779 */ 6780 dsl_dataset_rele(tosnap, FTAG); 6781 dsl_pool_rele(dp, FTAG); 6782 return (SET_ERROR(EINVAL)); 6783 } 6784 } 6785 6786 if (full_estimate) { 6787 dmu_send_outparams_t out = {0}; 6788 offset_t off = 0; 6789 out.dso_outfunc = send_space_sum; 6790 out.dso_arg = &space; 6791 out.dso_dryrun = B_TRUE; 6792 /* 6793 * We have to release these holds so dmu_send can take them. It 6794 * will do all the error checking we need. 6795 */ 6796 dsl_dataset_rele(tosnap, FTAG); 6797 dsl_pool_rele(dp, FTAG); 6798 error = dmu_send(snapname, fromname, embedok, largeblockok, 6799 compressok, rawok, savedok, resumeobj, resumeoff, 6800 redactlist_book, fd, &off, &out); 6801 } else { 6802 error = dmu_send_estimate_fast(tosnap, fromsnap, 6803 (from && strchr(fromname, '#') != NULL ? &zbm : NULL), 6804 compressok || rawok, savedok, &space); 6805 space -= resume_bytes; 6806 if (fromsnap != NULL) 6807 dsl_dataset_rele(fromsnap, FTAG); 6808 dsl_dataset_rele(tosnap, FTAG); 6809 dsl_pool_rele(dp, FTAG); 6810 } 6811 6812 fnvlist_add_uint64(outnvl, "space", space); 6813 6814 return (error); 6815 } 6816 6817 /* 6818 * Sync the currently open TXG to disk for the specified pool. 6819 * This is somewhat similar to 'zfs_sync()'. 6820 * For cases that do not result in error this ioctl will wait for 6821 * the currently open TXG to commit before returning back to the caller. 6822 * 6823 * innvl: { 6824 * "force" -> when true, force uberblock update even if there is no dirty data. 6825 * In addition this will cause the vdev configuration to be written 6826 * out including updating the zpool cache file. (boolean_t) 6827 * } 6828 * 6829 * onvl is unused 6830 */ 6831 static const zfs_ioc_key_t zfs_keys_pool_sync[] = { 6832 {"force", DATA_TYPE_BOOLEAN_VALUE, 0}, 6833 }; 6834 6835 static int 6836 zfs_ioc_pool_sync(const char *pool, nvlist_t *innvl, nvlist_t *onvl) 6837 { 6838 (void) onvl; 6839 int err; 6840 boolean_t rc, force = B_FALSE; 6841 spa_t *spa; 6842 6843 if ((err = spa_open(pool, &spa, FTAG)) != 0) 6844 return (err); 6845 6846 if (innvl) { 6847 err = nvlist_lookup_boolean_value(innvl, "force", &rc); 6848 if (err == 0) 6849 force = rc; 6850 } 6851 6852 if (force) { 6853 spa_config_enter(spa, SCL_CONFIG, FTAG, RW_WRITER); 6854 vdev_config_dirty(spa->spa_root_vdev); 6855 spa_config_exit(spa, SCL_CONFIG, FTAG); 6856 } 6857 txg_wait_synced(spa_get_dsl(spa), 0); 6858 6859 spa_close(spa, FTAG); 6860 6861 return (0); 6862 } 6863 6864 /* 6865 * Load a user's wrapping key into the kernel. 6866 * innvl: { 6867 * "hidden_args" -> { "wkeydata" -> value } 6868 * raw uint8_t array of encryption wrapping key data (32 bytes) 6869 * (optional) "noop" -> (value ignored) 6870 * presence indicated key should only be verified, not loaded 6871 * } 6872 */ 6873 static const zfs_ioc_key_t zfs_keys_load_key[] = { 6874 {"hidden_args", DATA_TYPE_NVLIST, 0}, 6875 {"noop", DATA_TYPE_BOOLEAN, ZK_OPTIONAL}, 6876 }; 6877 6878 static int 6879 zfs_ioc_load_key(const char *dsname, nvlist_t *innvl, nvlist_t *outnvl) 6880 { 6881 (void) outnvl; 6882 int ret; 6883 dsl_crypto_params_t *dcp = NULL; 6884 nvlist_t *hidden_args; 6885 boolean_t noop = nvlist_exists(innvl, "noop"); 6886 6887 if (strchr(dsname, '@') != NULL || strchr(dsname, '%') != NULL) { 6888 ret = SET_ERROR(EINVAL); 6889 goto error; 6890 } 6891 6892 hidden_args = fnvlist_lookup_nvlist(innvl, ZPOOL_HIDDEN_ARGS); 6893 6894 ret = dsl_crypto_params_create_nvlist(DCP_CMD_NONE, NULL, 6895 hidden_args, &dcp); 6896 if (ret != 0) 6897 goto error; 6898 6899 ret = spa_keystore_load_wkey(dsname, dcp, noop); 6900 if (ret != 0) 6901 goto error; 6902 6903 dsl_crypto_params_free(dcp, noop); 6904 6905 return (0); 6906 6907 error: 6908 dsl_crypto_params_free(dcp, B_TRUE); 6909 return (ret); 6910 } 6911 6912 /* 6913 * Unload a user's wrapping key from the kernel. 6914 * Both innvl and outnvl are unused. 6915 */ 6916 static const zfs_ioc_key_t zfs_keys_unload_key[] = { 6917 /* no nvl keys */ 6918 }; 6919 6920 static int 6921 zfs_ioc_unload_key(const char *dsname, nvlist_t *innvl, nvlist_t *outnvl) 6922 { 6923 (void) innvl, (void) outnvl; 6924 int ret = 0; 6925 6926 if (strchr(dsname, '@') != NULL || strchr(dsname, '%') != NULL) { 6927 ret = (SET_ERROR(EINVAL)); 6928 goto out; 6929 } 6930 6931 ret = spa_keystore_unload_wkey(dsname); 6932 if (ret != 0) 6933 goto out; 6934 6935 out: 6936 return (ret); 6937 } 6938 6939 /* 6940 * Changes a user's wrapping key used to decrypt a dataset. The keyformat, 6941 * keylocation, pbkdf2salt, and pbkdf2iters properties can also be specified 6942 * here to change how the key is derived in userspace. 6943 * 6944 * innvl: { 6945 * "hidden_args" (optional) -> { "wkeydata" -> value } 6946 * raw uint8_t array of new encryption wrapping key data (32 bytes) 6947 * "props" (optional) -> { prop -> value } 6948 * } 6949 * 6950 * outnvl is unused 6951 */ 6952 static const zfs_ioc_key_t zfs_keys_change_key[] = { 6953 {"crypt_cmd", DATA_TYPE_UINT64, ZK_OPTIONAL}, 6954 {"hidden_args", DATA_TYPE_NVLIST, ZK_OPTIONAL}, 6955 {"props", DATA_TYPE_NVLIST, ZK_OPTIONAL}, 6956 }; 6957 6958 static int 6959 zfs_ioc_change_key(const char *dsname, nvlist_t *innvl, nvlist_t *outnvl) 6960 { 6961 (void) outnvl; 6962 int ret; 6963 uint64_t cmd = DCP_CMD_NONE; 6964 dsl_crypto_params_t *dcp = NULL; 6965 nvlist_t *args = NULL, *hidden_args = NULL; 6966 6967 if (strchr(dsname, '@') != NULL || strchr(dsname, '%') != NULL) { 6968 ret = (SET_ERROR(EINVAL)); 6969 goto error; 6970 } 6971 6972 (void) nvlist_lookup_uint64(innvl, "crypt_cmd", &cmd); 6973 (void) nvlist_lookup_nvlist(innvl, "props", &args); 6974 (void) nvlist_lookup_nvlist(innvl, ZPOOL_HIDDEN_ARGS, &hidden_args); 6975 6976 ret = dsl_crypto_params_create_nvlist(cmd, args, hidden_args, &dcp); 6977 if (ret != 0) 6978 goto error; 6979 6980 ret = spa_keystore_change_key(dsname, dcp); 6981 if (ret != 0) 6982 goto error; 6983 6984 dsl_crypto_params_free(dcp, B_FALSE); 6985 6986 return (0); 6987 6988 error: 6989 dsl_crypto_params_free(dcp, B_TRUE); 6990 return (ret); 6991 } 6992 6993 static zfs_ioc_vec_t zfs_ioc_vec[ZFS_IOC_LAST - ZFS_IOC_FIRST]; 6994 6995 static void 6996 zfs_ioctl_register_legacy(zfs_ioc_t ioc, zfs_ioc_legacy_func_t *func, 6997 zfs_secpolicy_func_t *secpolicy, zfs_ioc_namecheck_t namecheck, 6998 boolean_t log_history, zfs_ioc_poolcheck_t pool_check) 6999 { 7000 zfs_ioc_vec_t *vec = &zfs_ioc_vec[ioc - ZFS_IOC_FIRST]; 7001 7002 ASSERT3U(ioc, >=, ZFS_IOC_FIRST); 7003 ASSERT3U(ioc, <, ZFS_IOC_LAST); 7004 ASSERT3P(vec->zvec_legacy_func, ==, NULL); 7005 ASSERT3P(vec->zvec_func, ==, NULL); 7006 7007 vec->zvec_legacy_func = func; 7008 vec->zvec_secpolicy = secpolicy; 7009 vec->zvec_namecheck = namecheck; 7010 vec->zvec_allow_log = log_history; 7011 vec->zvec_pool_check = pool_check; 7012 } 7013 7014 /* 7015 * See the block comment at the beginning of this file for details on 7016 * each argument to this function. 7017 */ 7018 void 7019 zfs_ioctl_register(const char *name, zfs_ioc_t ioc, zfs_ioc_func_t *func, 7020 zfs_secpolicy_func_t *secpolicy, zfs_ioc_namecheck_t namecheck, 7021 zfs_ioc_poolcheck_t pool_check, boolean_t smush_outnvlist, 7022 boolean_t allow_log, const zfs_ioc_key_t *nvl_keys, size_t num_keys) 7023 { 7024 zfs_ioc_vec_t *vec = &zfs_ioc_vec[ioc - ZFS_IOC_FIRST]; 7025 7026 ASSERT3U(ioc, >=, ZFS_IOC_FIRST); 7027 ASSERT3U(ioc, <, ZFS_IOC_LAST); 7028 ASSERT3P(vec->zvec_legacy_func, ==, NULL); 7029 ASSERT3P(vec->zvec_func, ==, NULL); 7030 7031 /* if we are logging, the name must be valid */ 7032 ASSERT(!allow_log || namecheck != NO_NAME); 7033 7034 vec->zvec_name = name; 7035 vec->zvec_func = func; 7036 vec->zvec_secpolicy = secpolicy; 7037 vec->zvec_namecheck = namecheck; 7038 vec->zvec_pool_check = pool_check; 7039 vec->zvec_smush_outnvlist = smush_outnvlist; 7040 vec->zvec_allow_log = allow_log; 7041 vec->zvec_nvl_keys = nvl_keys; 7042 vec->zvec_nvl_key_count = num_keys; 7043 } 7044 7045 static void 7046 zfs_ioctl_register_pool(zfs_ioc_t ioc, zfs_ioc_legacy_func_t *func, 7047 zfs_secpolicy_func_t *secpolicy, boolean_t log_history, 7048 zfs_ioc_poolcheck_t pool_check) 7049 { 7050 zfs_ioctl_register_legacy(ioc, func, secpolicy, 7051 POOL_NAME, log_history, pool_check); 7052 } 7053 7054 void 7055 zfs_ioctl_register_dataset_nolog(zfs_ioc_t ioc, zfs_ioc_legacy_func_t *func, 7056 zfs_secpolicy_func_t *secpolicy, zfs_ioc_poolcheck_t pool_check) 7057 { 7058 zfs_ioctl_register_legacy(ioc, func, secpolicy, 7059 DATASET_NAME, B_FALSE, pool_check); 7060 } 7061 7062 static void 7063 zfs_ioctl_register_pool_modify(zfs_ioc_t ioc, zfs_ioc_legacy_func_t *func) 7064 { 7065 zfs_ioctl_register_legacy(ioc, func, zfs_secpolicy_config, 7066 POOL_NAME, B_TRUE, POOL_CHECK_SUSPENDED | POOL_CHECK_READONLY); 7067 } 7068 7069 static void 7070 zfs_ioctl_register_pool_meta(zfs_ioc_t ioc, zfs_ioc_legacy_func_t *func, 7071 zfs_secpolicy_func_t *secpolicy) 7072 { 7073 zfs_ioctl_register_legacy(ioc, func, secpolicy, 7074 NO_NAME, B_FALSE, POOL_CHECK_NONE); 7075 } 7076 7077 static void 7078 zfs_ioctl_register_dataset_read_secpolicy(zfs_ioc_t ioc, 7079 zfs_ioc_legacy_func_t *func, zfs_secpolicy_func_t *secpolicy) 7080 { 7081 zfs_ioctl_register_legacy(ioc, func, secpolicy, 7082 DATASET_NAME, B_FALSE, POOL_CHECK_SUSPENDED); 7083 } 7084 7085 static void 7086 zfs_ioctl_register_dataset_read(zfs_ioc_t ioc, zfs_ioc_legacy_func_t *func) 7087 { 7088 zfs_ioctl_register_dataset_read_secpolicy(ioc, func, 7089 zfs_secpolicy_read); 7090 } 7091 7092 static void 7093 zfs_ioctl_register_dataset_modify(zfs_ioc_t ioc, zfs_ioc_legacy_func_t *func, 7094 zfs_secpolicy_func_t *secpolicy) 7095 { 7096 zfs_ioctl_register_legacy(ioc, func, secpolicy, 7097 DATASET_NAME, B_TRUE, POOL_CHECK_SUSPENDED | POOL_CHECK_READONLY); 7098 } 7099 7100 static void 7101 zfs_ioctl_init(void) 7102 { 7103 zfs_ioctl_register("snapshot", ZFS_IOC_SNAPSHOT, 7104 zfs_ioc_snapshot, zfs_secpolicy_snapshot, POOL_NAME, 7105 POOL_CHECK_SUSPENDED | POOL_CHECK_READONLY, B_TRUE, B_TRUE, 7106 zfs_keys_snapshot, ARRAY_SIZE(zfs_keys_snapshot)); 7107 7108 zfs_ioctl_register("log_history", ZFS_IOC_LOG_HISTORY, 7109 zfs_ioc_log_history, zfs_secpolicy_log_history, NO_NAME, 7110 POOL_CHECK_SUSPENDED | POOL_CHECK_READONLY, B_FALSE, B_FALSE, 7111 zfs_keys_log_history, ARRAY_SIZE(zfs_keys_log_history)); 7112 7113 zfs_ioctl_register("space_snaps", ZFS_IOC_SPACE_SNAPS, 7114 zfs_ioc_space_snaps, zfs_secpolicy_read, DATASET_NAME, 7115 POOL_CHECK_SUSPENDED, B_FALSE, B_FALSE, 7116 zfs_keys_space_snaps, ARRAY_SIZE(zfs_keys_space_snaps)); 7117 7118 zfs_ioctl_register("send", ZFS_IOC_SEND_NEW, 7119 zfs_ioc_send_new, zfs_secpolicy_send_new, DATASET_NAME, 7120 POOL_CHECK_SUSPENDED, B_FALSE, B_FALSE, 7121 zfs_keys_send_new, ARRAY_SIZE(zfs_keys_send_new)); 7122 7123 zfs_ioctl_register("send_space", ZFS_IOC_SEND_SPACE, 7124 zfs_ioc_send_space, zfs_secpolicy_read, DATASET_NAME, 7125 POOL_CHECK_SUSPENDED, B_FALSE, B_FALSE, 7126 zfs_keys_send_space, ARRAY_SIZE(zfs_keys_send_space)); 7127 7128 zfs_ioctl_register("create", ZFS_IOC_CREATE, 7129 zfs_ioc_create, zfs_secpolicy_create_clone, DATASET_NAME, 7130 POOL_CHECK_SUSPENDED | POOL_CHECK_READONLY, B_TRUE, B_TRUE, 7131 zfs_keys_create, ARRAY_SIZE(zfs_keys_create)); 7132 7133 zfs_ioctl_register("clone", ZFS_IOC_CLONE, 7134 zfs_ioc_clone, zfs_secpolicy_create_clone, DATASET_NAME, 7135 POOL_CHECK_SUSPENDED | POOL_CHECK_READONLY, B_TRUE, B_TRUE, 7136 zfs_keys_clone, ARRAY_SIZE(zfs_keys_clone)); 7137 7138 zfs_ioctl_register("remap", ZFS_IOC_REMAP, 7139 zfs_ioc_remap, zfs_secpolicy_none, DATASET_NAME, 7140 POOL_CHECK_SUSPENDED | POOL_CHECK_READONLY, B_FALSE, B_TRUE, 7141 zfs_keys_remap, ARRAY_SIZE(zfs_keys_remap)); 7142 7143 zfs_ioctl_register("destroy_snaps", ZFS_IOC_DESTROY_SNAPS, 7144 zfs_ioc_destroy_snaps, zfs_secpolicy_destroy_snaps, POOL_NAME, 7145 POOL_CHECK_SUSPENDED | POOL_CHECK_READONLY, B_TRUE, B_TRUE, 7146 zfs_keys_destroy_snaps, ARRAY_SIZE(zfs_keys_destroy_snaps)); 7147 7148 zfs_ioctl_register("hold", ZFS_IOC_HOLD, 7149 zfs_ioc_hold, zfs_secpolicy_hold, POOL_NAME, 7150 POOL_CHECK_SUSPENDED | POOL_CHECK_READONLY, B_TRUE, B_TRUE, 7151 zfs_keys_hold, ARRAY_SIZE(zfs_keys_hold)); 7152 zfs_ioctl_register("release", ZFS_IOC_RELEASE, 7153 zfs_ioc_release, zfs_secpolicy_release, POOL_NAME, 7154 POOL_CHECK_SUSPENDED | POOL_CHECK_READONLY, B_TRUE, B_TRUE, 7155 zfs_keys_release, ARRAY_SIZE(zfs_keys_release)); 7156 7157 zfs_ioctl_register("get_holds", ZFS_IOC_GET_HOLDS, 7158 zfs_ioc_get_holds, zfs_secpolicy_read, DATASET_NAME, 7159 POOL_CHECK_SUSPENDED, B_FALSE, B_FALSE, 7160 zfs_keys_get_holds, ARRAY_SIZE(zfs_keys_get_holds)); 7161 7162 zfs_ioctl_register("rollback", ZFS_IOC_ROLLBACK, 7163 zfs_ioc_rollback, zfs_secpolicy_rollback, DATASET_NAME, 7164 POOL_CHECK_SUSPENDED | POOL_CHECK_READONLY, B_FALSE, B_TRUE, 7165 zfs_keys_rollback, ARRAY_SIZE(zfs_keys_rollback)); 7166 7167 zfs_ioctl_register("bookmark", ZFS_IOC_BOOKMARK, 7168 zfs_ioc_bookmark, zfs_secpolicy_bookmark, POOL_NAME, 7169 POOL_CHECK_SUSPENDED | POOL_CHECK_READONLY, B_TRUE, B_TRUE, 7170 zfs_keys_bookmark, ARRAY_SIZE(zfs_keys_bookmark)); 7171 7172 zfs_ioctl_register("get_bookmarks", ZFS_IOC_GET_BOOKMARKS, 7173 zfs_ioc_get_bookmarks, zfs_secpolicy_read, DATASET_NAME, 7174 POOL_CHECK_SUSPENDED, B_FALSE, B_FALSE, 7175 zfs_keys_get_bookmarks, ARRAY_SIZE(zfs_keys_get_bookmarks)); 7176 7177 zfs_ioctl_register("get_bookmark_props", ZFS_IOC_GET_BOOKMARK_PROPS, 7178 zfs_ioc_get_bookmark_props, zfs_secpolicy_read, ENTITY_NAME, 7179 POOL_CHECK_SUSPENDED, B_FALSE, B_FALSE, zfs_keys_get_bookmark_props, 7180 ARRAY_SIZE(zfs_keys_get_bookmark_props)); 7181 7182 zfs_ioctl_register("destroy_bookmarks", ZFS_IOC_DESTROY_BOOKMARKS, 7183 zfs_ioc_destroy_bookmarks, zfs_secpolicy_destroy_bookmarks, 7184 POOL_NAME, 7185 POOL_CHECK_SUSPENDED | POOL_CHECK_READONLY, B_TRUE, B_TRUE, 7186 zfs_keys_destroy_bookmarks, 7187 ARRAY_SIZE(zfs_keys_destroy_bookmarks)); 7188 7189 zfs_ioctl_register("receive", ZFS_IOC_RECV_NEW, 7190 zfs_ioc_recv_new, zfs_secpolicy_recv, DATASET_NAME, 7191 POOL_CHECK_SUSPENDED | POOL_CHECK_READONLY, B_TRUE, B_TRUE, 7192 zfs_keys_recv_new, ARRAY_SIZE(zfs_keys_recv_new)); 7193 zfs_ioctl_register("load-key", ZFS_IOC_LOAD_KEY, 7194 zfs_ioc_load_key, zfs_secpolicy_load_key, 7195 DATASET_NAME, POOL_CHECK_SUSPENDED, B_TRUE, B_TRUE, 7196 zfs_keys_load_key, ARRAY_SIZE(zfs_keys_load_key)); 7197 zfs_ioctl_register("unload-key", ZFS_IOC_UNLOAD_KEY, 7198 zfs_ioc_unload_key, zfs_secpolicy_load_key, 7199 DATASET_NAME, POOL_CHECK_SUSPENDED, B_TRUE, B_TRUE, 7200 zfs_keys_unload_key, ARRAY_SIZE(zfs_keys_unload_key)); 7201 zfs_ioctl_register("change-key", ZFS_IOC_CHANGE_KEY, 7202 zfs_ioc_change_key, zfs_secpolicy_change_key, 7203 DATASET_NAME, POOL_CHECK_SUSPENDED | POOL_CHECK_READONLY, 7204 B_TRUE, B_TRUE, zfs_keys_change_key, 7205 ARRAY_SIZE(zfs_keys_change_key)); 7206 7207 zfs_ioctl_register("sync", ZFS_IOC_POOL_SYNC, 7208 zfs_ioc_pool_sync, zfs_secpolicy_none, POOL_NAME, 7209 POOL_CHECK_SUSPENDED | POOL_CHECK_READONLY, B_FALSE, B_FALSE, 7210 zfs_keys_pool_sync, ARRAY_SIZE(zfs_keys_pool_sync)); 7211 zfs_ioctl_register("reopen", ZFS_IOC_POOL_REOPEN, zfs_ioc_pool_reopen, 7212 zfs_secpolicy_config, POOL_NAME, POOL_CHECK_SUSPENDED, B_TRUE, 7213 B_TRUE, zfs_keys_pool_reopen, ARRAY_SIZE(zfs_keys_pool_reopen)); 7214 7215 zfs_ioctl_register("channel_program", ZFS_IOC_CHANNEL_PROGRAM, 7216 zfs_ioc_channel_program, zfs_secpolicy_config, 7217 POOL_NAME, POOL_CHECK_SUSPENDED | POOL_CHECK_READONLY, B_TRUE, 7218 B_TRUE, zfs_keys_channel_program, 7219 ARRAY_SIZE(zfs_keys_channel_program)); 7220 7221 zfs_ioctl_register("redact", ZFS_IOC_REDACT, 7222 zfs_ioc_redact, zfs_secpolicy_config, DATASET_NAME, 7223 POOL_CHECK_SUSPENDED | POOL_CHECK_READONLY, B_TRUE, B_TRUE, 7224 zfs_keys_redact, ARRAY_SIZE(zfs_keys_redact)); 7225 7226 zfs_ioctl_register("zpool_checkpoint", ZFS_IOC_POOL_CHECKPOINT, 7227 zfs_ioc_pool_checkpoint, zfs_secpolicy_config, POOL_NAME, 7228 POOL_CHECK_SUSPENDED | POOL_CHECK_READONLY, B_TRUE, B_TRUE, 7229 zfs_keys_pool_checkpoint, ARRAY_SIZE(zfs_keys_pool_checkpoint)); 7230 7231 zfs_ioctl_register("zpool_discard_checkpoint", 7232 ZFS_IOC_POOL_DISCARD_CHECKPOINT, zfs_ioc_pool_discard_checkpoint, 7233 zfs_secpolicy_config, POOL_NAME, 7234 POOL_CHECK_SUSPENDED | POOL_CHECK_READONLY, B_TRUE, B_TRUE, 7235 zfs_keys_pool_discard_checkpoint, 7236 ARRAY_SIZE(zfs_keys_pool_discard_checkpoint)); 7237 7238 zfs_ioctl_register("initialize", ZFS_IOC_POOL_INITIALIZE, 7239 zfs_ioc_pool_initialize, zfs_secpolicy_config, POOL_NAME, 7240 POOL_CHECK_SUSPENDED | POOL_CHECK_READONLY, B_TRUE, B_TRUE, 7241 zfs_keys_pool_initialize, ARRAY_SIZE(zfs_keys_pool_initialize)); 7242 7243 zfs_ioctl_register("trim", ZFS_IOC_POOL_TRIM, 7244 zfs_ioc_pool_trim, zfs_secpolicy_config, POOL_NAME, 7245 POOL_CHECK_SUSPENDED | POOL_CHECK_READONLY, B_TRUE, B_TRUE, 7246 zfs_keys_pool_trim, ARRAY_SIZE(zfs_keys_pool_trim)); 7247 7248 zfs_ioctl_register("wait", ZFS_IOC_WAIT, 7249 zfs_ioc_wait, zfs_secpolicy_none, POOL_NAME, 7250 POOL_CHECK_SUSPENDED | POOL_CHECK_READONLY, B_FALSE, B_FALSE, 7251 zfs_keys_pool_wait, ARRAY_SIZE(zfs_keys_pool_wait)); 7252 7253 zfs_ioctl_register("wait_fs", ZFS_IOC_WAIT_FS, 7254 zfs_ioc_wait_fs, zfs_secpolicy_none, DATASET_NAME, 7255 POOL_CHECK_SUSPENDED | POOL_CHECK_READONLY, B_FALSE, B_FALSE, 7256 zfs_keys_fs_wait, ARRAY_SIZE(zfs_keys_fs_wait)); 7257 7258 zfs_ioctl_register("set_bootenv", ZFS_IOC_SET_BOOTENV, 7259 zfs_ioc_set_bootenv, zfs_secpolicy_config, POOL_NAME, 7260 POOL_CHECK_SUSPENDED | POOL_CHECK_READONLY, B_FALSE, B_TRUE, 7261 zfs_keys_set_bootenv, ARRAY_SIZE(zfs_keys_set_bootenv)); 7262 7263 zfs_ioctl_register("get_bootenv", ZFS_IOC_GET_BOOTENV, 7264 zfs_ioc_get_bootenv, zfs_secpolicy_none, POOL_NAME, 7265 POOL_CHECK_SUSPENDED, B_FALSE, B_TRUE, 7266 zfs_keys_get_bootenv, ARRAY_SIZE(zfs_keys_get_bootenv)); 7267 7268 zfs_ioctl_register("zpool_vdev_get_props", ZFS_IOC_VDEV_GET_PROPS, 7269 zfs_ioc_vdev_get_props, zfs_secpolicy_read, POOL_NAME, 7270 POOL_CHECK_NONE, B_FALSE, B_FALSE, zfs_keys_vdev_get_props, 7271 ARRAY_SIZE(zfs_keys_vdev_get_props)); 7272 7273 zfs_ioctl_register("zpool_vdev_set_props", ZFS_IOC_VDEV_SET_PROPS, 7274 zfs_ioc_vdev_set_props, zfs_secpolicy_config, POOL_NAME, 7275 POOL_CHECK_SUSPENDED | POOL_CHECK_READONLY, B_FALSE, B_FALSE, 7276 zfs_keys_vdev_set_props, ARRAY_SIZE(zfs_keys_vdev_set_props)); 7277 7278 zfs_ioctl_register("scrub", ZFS_IOC_POOL_SCRUB, 7279 zfs_ioc_pool_scrub, zfs_secpolicy_config, POOL_NAME, 7280 POOL_CHECK_NONE, B_TRUE, B_TRUE, 7281 zfs_keys_pool_scrub, ARRAY_SIZE(zfs_keys_pool_scrub)); 7282 7283 /* IOCTLS that use the legacy function signature */ 7284 7285 zfs_ioctl_register_legacy(ZFS_IOC_POOL_FREEZE, zfs_ioc_pool_freeze, 7286 zfs_secpolicy_config, NO_NAME, B_FALSE, POOL_CHECK_READONLY); 7287 7288 zfs_ioctl_register_pool(ZFS_IOC_POOL_CREATE, zfs_ioc_pool_create, 7289 zfs_secpolicy_config, B_TRUE, POOL_CHECK_NONE); 7290 zfs_ioctl_register_pool_modify(ZFS_IOC_POOL_SCAN, 7291 zfs_ioc_pool_scan); 7292 zfs_ioctl_register_pool_modify(ZFS_IOC_POOL_UPGRADE, 7293 zfs_ioc_pool_upgrade); 7294 zfs_ioctl_register_pool_modify(ZFS_IOC_VDEV_ADD, 7295 zfs_ioc_vdev_add); 7296 zfs_ioctl_register_pool_modify(ZFS_IOC_VDEV_REMOVE, 7297 zfs_ioc_vdev_remove); 7298 zfs_ioctl_register_pool_modify(ZFS_IOC_VDEV_SET_STATE, 7299 zfs_ioc_vdev_set_state); 7300 zfs_ioctl_register_pool_modify(ZFS_IOC_VDEV_ATTACH, 7301 zfs_ioc_vdev_attach); 7302 zfs_ioctl_register_pool_modify(ZFS_IOC_VDEV_DETACH, 7303 zfs_ioc_vdev_detach); 7304 zfs_ioctl_register_pool_modify(ZFS_IOC_VDEV_SETPATH, 7305 zfs_ioc_vdev_setpath); 7306 zfs_ioctl_register_pool_modify(ZFS_IOC_VDEV_SETFRU, 7307 zfs_ioc_vdev_setfru); 7308 zfs_ioctl_register_pool_modify(ZFS_IOC_POOL_SET_PROPS, 7309 zfs_ioc_pool_set_props); 7310 zfs_ioctl_register_pool_modify(ZFS_IOC_VDEV_SPLIT, 7311 zfs_ioc_vdev_split); 7312 zfs_ioctl_register_pool_modify(ZFS_IOC_POOL_REGUID, 7313 zfs_ioc_pool_reguid); 7314 7315 zfs_ioctl_register_pool_meta(ZFS_IOC_POOL_CONFIGS, 7316 zfs_ioc_pool_configs, zfs_secpolicy_none); 7317 zfs_ioctl_register_pool_meta(ZFS_IOC_POOL_TRYIMPORT, 7318 zfs_ioc_pool_tryimport, zfs_secpolicy_config); 7319 zfs_ioctl_register_pool_meta(ZFS_IOC_INJECT_FAULT, 7320 zfs_ioc_inject_fault, zfs_secpolicy_inject); 7321 zfs_ioctl_register_pool_meta(ZFS_IOC_CLEAR_FAULT, 7322 zfs_ioc_clear_fault, zfs_secpolicy_inject); 7323 zfs_ioctl_register_pool_meta(ZFS_IOC_INJECT_LIST_NEXT, 7324 zfs_ioc_inject_list_next, zfs_secpolicy_inject); 7325 7326 /* 7327 * pool destroy, and export don't log the history as part of 7328 * zfsdev_ioctl, but rather zfs_ioc_pool_export 7329 * does the logging of those commands. 7330 */ 7331 zfs_ioctl_register_pool(ZFS_IOC_POOL_DESTROY, zfs_ioc_pool_destroy, 7332 zfs_secpolicy_config, B_FALSE, POOL_CHECK_SUSPENDED); 7333 zfs_ioctl_register_pool(ZFS_IOC_POOL_EXPORT, zfs_ioc_pool_export, 7334 zfs_secpolicy_config, B_FALSE, POOL_CHECK_SUSPENDED); 7335 7336 zfs_ioctl_register_pool(ZFS_IOC_POOL_STATS, zfs_ioc_pool_stats, 7337 zfs_secpolicy_read, B_FALSE, POOL_CHECK_NONE); 7338 zfs_ioctl_register_pool(ZFS_IOC_POOL_GET_PROPS, zfs_ioc_pool_get_props, 7339 zfs_secpolicy_read, B_FALSE, POOL_CHECK_NONE); 7340 7341 zfs_ioctl_register_pool(ZFS_IOC_ERROR_LOG, zfs_ioc_error_log, 7342 zfs_secpolicy_inject, B_FALSE, POOL_CHECK_SUSPENDED); 7343 zfs_ioctl_register_pool(ZFS_IOC_DSOBJ_TO_DSNAME, 7344 zfs_ioc_dsobj_to_dsname, 7345 zfs_secpolicy_diff, B_FALSE, POOL_CHECK_SUSPENDED); 7346 zfs_ioctl_register_pool(ZFS_IOC_POOL_GET_HISTORY, 7347 zfs_ioc_pool_get_history, 7348 zfs_secpolicy_config, B_FALSE, POOL_CHECK_SUSPENDED); 7349 7350 zfs_ioctl_register_pool(ZFS_IOC_POOL_IMPORT, zfs_ioc_pool_import, 7351 zfs_secpolicy_config, B_TRUE, POOL_CHECK_NONE); 7352 7353 zfs_ioctl_register_pool(ZFS_IOC_CLEAR, zfs_ioc_clear, 7354 zfs_secpolicy_config, B_TRUE, POOL_CHECK_READONLY); 7355 7356 zfs_ioctl_register_dataset_read(ZFS_IOC_SPACE_WRITTEN, 7357 zfs_ioc_space_written); 7358 zfs_ioctl_register_dataset_read(ZFS_IOC_OBJSET_RECVD_PROPS, 7359 zfs_ioc_objset_recvd_props); 7360 zfs_ioctl_register_dataset_read(ZFS_IOC_NEXT_OBJ, 7361 zfs_ioc_next_obj); 7362 zfs_ioctl_register_dataset_read(ZFS_IOC_GET_FSACL, 7363 zfs_ioc_get_fsacl); 7364 zfs_ioctl_register_dataset_read(ZFS_IOC_OBJSET_STATS, 7365 zfs_ioc_objset_stats); 7366 zfs_ioctl_register_dataset_read(ZFS_IOC_OBJSET_ZPLPROPS, 7367 zfs_ioc_objset_zplprops); 7368 zfs_ioctl_register_dataset_read(ZFS_IOC_DATASET_LIST_NEXT, 7369 zfs_ioc_dataset_list_next); 7370 zfs_ioctl_register_dataset_read(ZFS_IOC_SNAPSHOT_LIST_NEXT, 7371 zfs_ioc_snapshot_list_next); 7372 zfs_ioctl_register_dataset_read(ZFS_IOC_SEND_PROGRESS, 7373 zfs_ioc_send_progress); 7374 7375 zfs_ioctl_register_dataset_read_secpolicy(ZFS_IOC_DIFF, 7376 zfs_ioc_diff, zfs_secpolicy_diff); 7377 zfs_ioctl_register_dataset_read_secpolicy(ZFS_IOC_OBJ_TO_STATS, 7378 zfs_ioc_obj_to_stats, zfs_secpolicy_diff); 7379 zfs_ioctl_register_dataset_read_secpolicy(ZFS_IOC_OBJ_TO_PATH, 7380 zfs_ioc_obj_to_path, zfs_secpolicy_diff); 7381 zfs_ioctl_register_dataset_read_secpolicy(ZFS_IOC_USERSPACE_ONE, 7382 zfs_ioc_userspace_one, zfs_secpolicy_userspace_one); 7383 zfs_ioctl_register_dataset_read_secpolicy(ZFS_IOC_USERSPACE_MANY, 7384 zfs_ioc_userspace_many, zfs_secpolicy_userspace_many); 7385 zfs_ioctl_register_dataset_read_secpolicy(ZFS_IOC_SEND, 7386 zfs_ioc_send, zfs_secpolicy_send); 7387 7388 zfs_ioctl_register_dataset_modify(ZFS_IOC_SET_PROP, zfs_ioc_set_prop, 7389 zfs_secpolicy_none); 7390 zfs_ioctl_register_dataset_modify(ZFS_IOC_DESTROY, zfs_ioc_destroy, 7391 zfs_secpolicy_destroy); 7392 zfs_ioctl_register_dataset_modify(ZFS_IOC_RENAME, zfs_ioc_rename, 7393 zfs_secpolicy_rename); 7394 zfs_ioctl_register_dataset_modify(ZFS_IOC_RECV, zfs_ioc_recv, 7395 zfs_secpolicy_recv); 7396 zfs_ioctl_register_dataset_modify(ZFS_IOC_PROMOTE, zfs_ioc_promote, 7397 zfs_secpolicy_promote); 7398 zfs_ioctl_register_dataset_modify(ZFS_IOC_INHERIT_PROP, 7399 zfs_ioc_inherit_prop, zfs_secpolicy_inherit_prop); 7400 zfs_ioctl_register_dataset_modify(ZFS_IOC_SET_FSACL, zfs_ioc_set_fsacl, 7401 zfs_secpolicy_set_fsacl); 7402 7403 zfs_ioctl_register_dataset_nolog(ZFS_IOC_SHARE, zfs_ioc_share, 7404 zfs_secpolicy_share, POOL_CHECK_NONE); 7405 zfs_ioctl_register_dataset_nolog(ZFS_IOC_SMB_ACL, zfs_ioc_smb_acl, 7406 zfs_secpolicy_smb_acl, POOL_CHECK_NONE); 7407 zfs_ioctl_register_dataset_nolog(ZFS_IOC_USERSPACE_UPGRADE, 7408 zfs_ioc_userspace_upgrade, zfs_secpolicy_userspace_upgrade, 7409 POOL_CHECK_SUSPENDED | POOL_CHECK_READONLY); 7410 zfs_ioctl_register_dataset_nolog(ZFS_IOC_TMP_SNAPSHOT, 7411 zfs_ioc_tmp_snapshot, zfs_secpolicy_tmp_snapshot, 7412 POOL_CHECK_SUSPENDED | POOL_CHECK_READONLY); 7413 7414 zfs_ioctl_register_legacy(ZFS_IOC_EVENTS_NEXT, zfs_ioc_events_next, 7415 zfs_secpolicy_config, NO_NAME, B_FALSE, POOL_CHECK_NONE); 7416 zfs_ioctl_register_legacy(ZFS_IOC_EVENTS_CLEAR, zfs_ioc_events_clear, 7417 zfs_secpolicy_config, NO_NAME, B_FALSE, POOL_CHECK_NONE); 7418 zfs_ioctl_register_legacy(ZFS_IOC_EVENTS_SEEK, zfs_ioc_events_seek, 7419 zfs_secpolicy_config, NO_NAME, B_FALSE, POOL_CHECK_NONE); 7420 7421 zfs_ioctl_init_os(); 7422 } 7423 7424 /* 7425 * Verify that for non-legacy ioctls the input nvlist 7426 * pairs match against the expected input. 7427 * 7428 * Possible errors are: 7429 * ZFS_ERR_IOC_ARG_UNAVAIL An unrecognized nvpair was encountered 7430 * ZFS_ERR_IOC_ARG_REQUIRED A required nvpair is missing 7431 * ZFS_ERR_IOC_ARG_BADTYPE Invalid type for nvpair 7432 */ 7433 static int 7434 zfs_check_input_nvpairs(nvlist_t *innvl, const zfs_ioc_vec_t *vec) 7435 { 7436 const zfs_ioc_key_t *nvl_keys = vec->zvec_nvl_keys; 7437 boolean_t required_keys_found = B_FALSE; 7438 7439 /* 7440 * examine each input pair 7441 */ 7442 for (nvpair_t *pair = nvlist_next_nvpair(innvl, NULL); 7443 pair != NULL; pair = nvlist_next_nvpair(innvl, pair)) { 7444 const char *name = nvpair_name(pair); 7445 data_type_t type = nvpair_type(pair); 7446 boolean_t identified = B_FALSE; 7447 7448 /* 7449 * check pair against the documented names and type 7450 */ 7451 for (int k = 0; k < vec->zvec_nvl_key_count; k++) { 7452 /* if not a wild card name, check for an exact match */ 7453 if ((nvl_keys[k].zkey_flags & ZK_WILDCARDLIST) == 0 && 7454 strcmp(nvl_keys[k].zkey_name, name) != 0) 7455 continue; 7456 7457 identified = B_TRUE; 7458 7459 if (nvl_keys[k].zkey_type != DATA_TYPE_ANY && 7460 nvl_keys[k].zkey_type != type) { 7461 return (SET_ERROR(ZFS_ERR_IOC_ARG_BADTYPE)); 7462 } 7463 7464 if (nvl_keys[k].zkey_flags & ZK_OPTIONAL) 7465 continue; 7466 7467 required_keys_found = B_TRUE; 7468 break; 7469 } 7470 7471 /* allow an 'optional' key, everything else is invalid */ 7472 if (!identified && 7473 (strcmp(name, "optional") != 0 || 7474 type != DATA_TYPE_NVLIST)) { 7475 return (SET_ERROR(ZFS_ERR_IOC_ARG_UNAVAIL)); 7476 } 7477 } 7478 7479 /* verify that all required keys were found */ 7480 for (int k = 0; k < vec->zvec_nvl_key_count; k++) { 7481 if (nvl_keys[k].zkey_flags & ZK_OPTIONAL) 7482 continue; 7483 7484 if (nvl_keys[k].zkey_flags & ZK_WILDCARDLIST) { 7485 /* at least one non-optional key is expected here */ 7486 if (!required_keys_found) 7487 return (SET_ERROR(ZFS_ERR_IOC_ARG_REQUIRED)); 7488 continue; 7489 } 7490 7491 if (!nvlist_exists(innvl, nvl_keys[k].zkey_name)) 7492 return (SET_ERROR(ZFS_ERR_IOC_ARG_REQUIRED)); 7493 } 7494 7495 return (0); 7496 } 7497 7498 static int 7499 pool_status_check(const char *name, zfs_ioc_namecheck_t type, 7500 zfs_ioc_poolcheck_t check) 7501 { 7502 spa_t *spa; 7503 int error; 7504 7505 ASSERT(type == POOL_NAME || type == DATASET_NAME || 7506 type == ENTITY_NAME); 7507 7508 if (check & POOL_CHECK_NONE) 7509 return (0); 7510 7511 error = spa_open(name, &spa, FTAG); 7512 if (error == 0) { 7513 if ((check & POOL_CHECK_SUSPENDED) && spa_suspended(spa)) 7514 error = SET_ERROR(EAGAIN); 7515 else if ((check & POOL_CHECK_READONLY) && !spa_writeable(spa)) 7516 error = SET_ERROR(EROFS); 7517 spa_close(spa, FTAG); 7518 } 7519 return (error); 7520 } 7521 7522 int 7523 zfsdev_getminor(zfs_file_t *fp, minor_t *minorp) 7524 { 7525 zfsdev_state_t *zs, *fpd; 7526 7527 ASSERT(!MUTEX_HELD(&zfsdev_state_lock)); 7528 7529 fpd = zfs_file_private(fp); 7530 if (fpd == NULL) 7531 return (SET_ERROR(EBADF)); 7532 7533 mutex_enter(&zfsdev_state_lock); 7534 7535 for (zs = &zfsdev_state_listhead; zs != NULL; zs = zs->zs_next) { 7536 7537 if (zs->zs_minor == -1) 7538 continue; 7539 7540 if (fpd == zs) { 7541 *minorp = fpd->zs_minor; 7542 mutex_exit(&zfsdev_state_lock); 7543 return (0); 7544 } 7545 } 7546 7547 mutex_exit(&zfsdev_state_lock); 7548 7549 return (SET_ERROR(EBADF)); 7550 } 7551 7552 void * 7553 zfsdev_get_state(minor_t minor, enum zfsdev_state_type which) 7554 { 7555 zfsdev_state_t *zs; 7556 7557 for (zs = &zfsdev_state_listhead; zs != NULL; zs = zs->zs_next) { 7558 if (zs->zs_minor == minor) { 7559 membar_consumer(); 7560 switch (which) { 7561 case ZST_ONEXIT: 7562 return (zs->zs_onexit); 7563 case ZST_ZEVENT: 7564 return (zs->zs_zevent); 7565 case ZST_ALL: 7566 return (zs); 7567 } 7568 } 7569 } 7570 7571 return (NULL); 7572 } 7573 7574 /* 7575 * Find a free minor number. The zfsdev_state_list is expected to 7576 * be short since it is only a list of currently open file handles. 7577 */ 7578 static minor_t 7579 zfsdev_minor_alloc(void) 7580 { 7581 static minor_t last_minor = 0; 7582 minor_t m; 7583 7584 ASSERT(MUTEX_HELD(&zfsdev_state_lock)); 7585 7586 for (m = last_minor + 1; m != last_minor; m++) { 7587 if (m > ZFSDEV_MAX_MINOR) 7588 m = 1; 7589 if (zfsdev_get_state(m, ZST_ALL) == NULL) { 7590 last_minor = m; 7591 return (m); 7592 } 7593 } 7594 7595 return (0); 7596 } 7597 7598 int 7599 zfsdev_state_init(void *priv) 7600 { 7601 zfsdev_state_t *zs, *zsprev = NULL; 7602 minor_t minor; 7603 boolean_t newzs = B_FALSE; 7604 7605 ASSERT(MUTEX_HELD(&zfsdev_state_lock)); 7606 7607 minor = zfsdev_minor_alloc(); 7608 if (minor == 0) 7609 return (SET_ERROR(ENXIO)); 7610 7611 for (zs = &zfsdev_state_listhead; zs != NULL; zs = zs->zs_next) { 7612 if (zs->zs_minor == -1) 7613 break; 7614 zsprev = zs; 7615 } 7616 7617 if (!zs) { 7618 zs = kmem_zalloc(sizeof (zfsdev_state_t), KM_SLEEP); 7619 newzs = B_TRUE; 7620 } 7621 7622 zfsdev_private_set_state(priv, zs); 7623 7624 zfs_onexit_init((zfs_onexit_t **)&zs->zs_onexit); 7625 zfs_zevent_init((zfs_zevent_t **)&zs->zs_zevent); 7626 7627 /* 7628 * In order to provide for lock-free concurrent read access 7629 * to the minor list in zfsdev_get_state(), new entries 7630 * must be completely written before linking them into the 7631 * list whereas existing entries are already linked; the last 7632 * operation must be updating zs_minor (from -1 to the new 7633 * value). 7634 */ 7635 if (newzs) { 7636 zs->zs_minor = minor; 7637 membar_producer(); 7638 zsprev->zs_next = zs; 7639 } else { 7640 membar_producer(); 7641 zs->zs_minor = minor; 7642 } 7643 7644 return (0); 7645 } 7646 7647 void 7648 zfsdev_state_destroy(void *priv) 7649 { 7650 zfsdev_state_t *zs = zfsdev_private_get_state(priv); 7651 7652 ASSERT(zs != NULL); 7653 ASSERT3S(zs->zs_minor, >, 0); 7654 7655 /* 7656 * The last reference to this zfsdev file descriptor is being dropped. 7657 * We don't have to worry about lookup grabbing this state object, and 7658 * zfsdev_state_init() will not try to reuse this object until it is 7659 * invalidated by setting zs_minor to -1. Invalidation must be done 7660 * last, with a memory barrier to ensure ordering. This lets us avoid 7661 * taking the global zfsdev state lock around destruction. 7662 */ 7663 zfs_onexit_destroy(zs->zs_onexit); 7664 zfs_zevent_destroy(zs->zs_zevent); 7665 zs->zs_onexit = NULL; 7666 zs->zs_zevent = NULL; 7667 membar_producer(); 7668 zs->zs_minor = -1; 7669 } 7670 7671 long 7672 zfsdev_ioctl_common(uint_t vecnum, zfs_cmd_t *zc, int flag) 7673 { 7674 int error, cmd; 7675 const zfs_ioc_vec_t *vec; 7676 char *saved_poolname = NULL; 7677 uint64_t max_nvlist_src_size; 7678 size_t saved_poolname_len = 0; 7679 nvlist_t *innvl = NULL; 7680 fstrans_cookie_t cookie; 7681 hrtime_t start_time = gethrtime(); 7682 7683 cmd = vecnum; 7684 error = 0; 7685 if (vecnum >= sizeof (zfs_ioc_vec) / sizeof (zfs_ioc_vec[0])) 7686 return (SET_ERROR(ZFS_ERR_IOC_CMD_UNAVAIL)); 7687 7688 vec = &zfs_ioc_vec[vecnum]; 7689 7690 /* 7691 * The registered ioctl list may be sparse, verify that either 7692 * a normal or legacy handler are registered. 7693 */ 7694 if (vec->zvec_func == NULL && vec->zvec_legacy_func == NULL) 7695 return (SET_ERROR(ZFS_ERR_IOC_CMD_UNAVAIL)); 7696 7697 zc->zc_iflags = flag & FKIOCTL; 7698 max_nvlist_src_size = zfs_max_nvlist_src_size_os(); 7699 if (zc->zc_nvlist_src_size > max_nvlist_src_size) { 7700 /* 7701 * Make sure the user doesn't pass in an insane value for 7702 * zc_nvlist_src_size. We have to check, since we will end 7703 * up allocating that much memory inside of get_nvlist(). This 7704 * prevents a nefarious user from allocating tons of kernel 7705 * memory. 7706 * 7707 * Also, we return EINVAL instead of ENOMEM here. The reason 7708 * being that returning ENOMEM from an ioctl() has a special 7709 * connotation; that the user's size value is too small and 7710 * needs to be expanded to hold the nvlist. See 7711 * zcmd_expand_dst_nvlist() for details. 7712 */ 7713 error = SET_ERROR(EINVAL); /* User's size too big */ 7714 7715 } else if (zc->zc_nvlist_src_size != 0) { 7716 error = get_nvlist(zc->zc_nvlist_src, zc->zc_nvlist_src_size, 7717 zc->zc_iflags, &innvl); 7718 if (error != 0) 7719 goto out; 7720 } 7721 7722 /* 7723 * Ensure that all pool/dataset names are valid before we pass down to 7724 * the lower layers. 7725 */ 7726 zc->zc_name[sizeof (zc->zc_name) - 1] = '\0'; 7727 switch (vec->zvec_namecheck) { 7728 case POOL_NAME: 7729 if (pool_namecheck(zc->zc_name, NULL, NULL) != 0) 7730 error = SET_ERROR(EINVAL); 7731 else 7732 error = pool_status_check(zc->zc_name, 7733 vec->zvec_namecheck, vec->zvec_pool_check); 7734 break; 7735 7736 case DATASET_NAME: 7737 if (dataset_namecheck(zc->zc_name, NULL, NULL) != 0) 7738 error = SET_ERROR(EINVAL); 7739 else 7740 error = pool_status_check(zc->zc_name, 7741 vec->zvec_namecheck, vec->zvec_pool_check); 7742 break; 7743 7744 case ENTITY_NAME: 7745 if (entity_namecheck(zc->zc_name, NULL, NULL) != 0) { 7746 error = SET_ERROR(EINVAL); 7747 } else { 7748 error = pool_status_check(zc->zc_name, 7749 vec->zvec_namecheck, vec->zvec_pool_check); 7750 } 7751 break; 7752 7753 case NO_NAME: 7754 break; 7755 } 7756 /* 7757 * Ensure that all input pairs are valid before we pass them down 7758 * to the lower layers. 7759 * 7760 * The vectored functions can use fnvlist_lookup_{type} for any 7761 * required pairs since zfs_check_input_nvpairs() confirmed that 7762 * they exist and are of the correct type. 7763 */ 7764 if (error == 0 && vec->zvec_func != NULL) { 7765 error = zfs_check_input_nvpairs(innvl, vec); 7766 if (error != 0) 7767 goto out; 7768 } 7769 7770 if (error == 0) { 7771 cookie = spl_fstrans_mark(); 7772 error = vec->zvec_secpolicy(zc, innvl, CRED()); 7773 spl_fstrans_unmark(cookie); 7774 } 7775 7776 if (error != 0) 7777 goto out; 7778 7779 /* legacy ioctls can modify zc_name */ 7780 /* 7781 * Can't use kmem_strdup() as we might truncate the string and 7782 * kmem_strfree() would then free with incorrect size. 7783 */ 7784 saved_poolname_len = strlen(zc->zc_name) + 1; 7785 saved_poolname = kmem_alloc(saved_poolname_len, KM_SLEEP); 7786 7787 strlcpy(saved_poolname, zc->zc_name, saved_poolname_len); 7788 saved_poolname[strcspn(saved_poolname, "/@#")] = '\0'; 7789 7790 if (vec->zvec_func != NULL) { 7791 nvlist_t *outnvl; 7792 int puterror = 0; 7793 spa_t *spa; 7794 nvlist_t *lognv = NULL; 7795 7796 ASSERT(vec->zvec_legacy_func == NULL); 7797 7798 /* 7799 * Add the innvl to the lognv before calling the func, 7800 * in case the func changes the innvl. 7801 */ 7802 if (vec->zvec_allow_log) { 7803 lognv = fnvlist_alloc(); 7804 fnvlist_add_string(lognv, ZPOOL_HIST_IOCTL, 7805 vec->zvec_name); 7806 if (!nvlist_empty(innvl)) { 7807 fnvlist_add_nvlist(lognv, ZPOOL_HIST_INPUT_NVL, 7808 innvl); 7809 } 7810 } 7811 7812 outnvl = fnvlist_alloc(); 7813 cookie = spl_fstrans_mark(); 7814 error = vec->zvec_func(zc->zc_name, innvl, outnvl); 7815 spl_fstrans_unmark(cookie); 7816 7817 /* 7818 * Some commands can partially execute, modify state, and still 7819 * return an error. In these cases, attempt to record what 7820 * was modified. 7821 */ 7822 if ((error == 0 || 7823 (cmd == ZFS_IOC_CHANNEL_PROGRAM && error != EINVAL)) && 7824 vec->zvec_allow_log && 7825 spa_open(zc->zc_name, &spa, FTAG) == 0) { 7826 if (!nvlist_empty(outnvl)) { 7827 size_t out_size = fnvlist_size(outnvl); 7828 if (out_size > zfs_history_output_max) { 7829 fnvlist_add_int64(lognv, 7830 ZPOOL_HIST_OUTPUT_SIZE, out_size); 7831 } else { 7832 fnvlist_add_nvlist(lognv, 7833 ZPOOL_HIST_OUTPUT_NVL, outnvl); 7834 } 7835 } 7836 if (error != 0) { 7837 fnvlist_add_int64(lognv, ZPOOL_HIST_ERRNO, 7838 error); 7839 } 7840 fnvlist_add_int64(lognv, ZPOOL_HIST_ELAPSED_NS, 7841 gethrtime() - start_time); 7842 (void) spa_history_log_nvl(spa, lognv); 7843 spa_close(spa, FTAG); 7844 } 7845 fnvlist_free(lognv); 7846 7847 if (!nvlist_empty(outnvl) || zc->zc_nvlist_dst_size != 0) { 7848 int smusherror = 0; 7849 if (vec->zvec_smush_outnvlist) { 7850 smusherror = nvlist_smush(outnvl, 7851 zc->zc_nvlist_dst_size); 7852 } 7853 if (smusherror == 0) 7854 puterror = put_nvlist(zc, outnvl); 7855 } 7856 7857 if (puterror != 0) 7858 error = puterror; 7859 7860 nvlist_free(outnvl); 7861 } else { 7862 cookie = spl_fstrans_mark(); 7863 error = vec->zvec_legacy_func(zc); 7864 spl_fstrans_unmark(cookie); 7865 } 7866 7867 out: 7868 nvlist_free(innvl); 7869 if (error == 0 && vec->zvec_allow_log) { 7870 char *s = tsd_get(zfs_allow_log_key); 7871 if (s != NULL) 7872 kmem_strfree(s); 7873 (void) tsd_set(zfs_allow_log_key, kmem_strdup(saved_poolname)); 7874 } 7875 if (saved_poolname != NULL) 7876 kmem_free(saved_poolname, saved_poolname_len); 7877 7878 return (error); 7879 } 7880 7881 int 7882 zfs_kmod_init(void) 7883 { 7884 int error; 7885 7886 if ((error = zvol_init()) != 0) 7887 return (error); 7888 7889 spa_init(SPA_MODE_READ | SPA_MODE_WRITE); 7890 zfs_init(); 7891 7892 zfs_ioctl_init(); 7893 7894 mutex_init(&zfsdev_state_lock, NULL, MUTEX_DEFAULT, NULL); 7895 zfsdev_state_listhead.zs_minor = -1; 7896 7897 if ((error = zfsdev_attach()) != 0) 7898 goto out; 7899 7900 tsd_create(&rrw_tsd_key, rrw_tsd_destroy); 7901 tsd_create(&zfs_allow_log_key, zfs_allow_log_destroy); 7902 7903 return (0); 7904 out: 7905 zfs_fini(); 7906 spa_fini(); 7907 zvol_fini(); 7908 7909 return (error); 7910 } 7911 7912 void 7913 zfs_kmod_fini(void) 7914 { 7915 zfsdev_state_t *zs, *zsnext = NULL; 7916 7917 zfsdev_detach(); 7918 7919 mutex_destroy(&zfsdev_state_lock); 7920 7921 for (zs = &zfsdev_state_listhead; zs != NULL; zs = zsnext) { 7922 zsnext = zs->zs_next; 7923 if (zs->zs_onexit) 7924 zfs_onexit_destroy(zs->zs_onexit); 7925 if (zs->zs_zevent) 7926 zfs_zevent_destroy(zs->zs_zevent); 7927 if (zs != &zfsdev_state_listhead) 7928 kmem_free(zs, sizeof (zfsdev_state_t)); 7929 } 7930 7931 zfs_ereport_taskq_fini(); /* run before zfs_fini() on Linux */ 7932 zfs_fini(); 7933 spa_fini(); 7934 zvol_fini(); 7935 7936 tsd_destroy(&rrw_tsd_key); 7937 tsd_destroy(&zfs_allow_log_key); 7938 } 7939 7940 ZFS_MODULE_PARAM(zfs, zfs_, max_nvlist_src_size, U64, ZMOD_RW, 7941 "Maximum size in bytes allowed for src nvlist passed with ZFS ioctls"); 7942 7943 ZFS_MODULE_PARAM(zfs, zfs_, history_output_max, U64, ZMOD_RW, 7944 "Maximum size in bytes of ZFS ioctl output that will be logged"); 7945