1 /* 2 * CDDL HEADER START 3 * 4 * The contents of this file are subject to the terms of the 5 * Common Development and Distribution License (the "License"). 6 * You may not use this file except in compliance with the License. 7 * 8 * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE 9 * or http://www.opensolaris.org/os/licensing. 10 * See the License for the specific language governing permissions 11 * and limitations under the License. 12 * 13 * When distributing Covered Code, include this CDDL HEADER in each 14 * file and include the License file at usr/src/OPENSOLARIS.LICENSE. 15 * If applicable, add the following below this CDDL HEADER, with the 16 * fields enclosed by brackets "[]" replaced with your own identifying 17 * information: Portions Copyright [yyyy] [name of copyright owner] 18 * 19 * CDDL HEADER END 20 */ 21 22 /* 23 * Copyright (c) 2005, 2010, Oracle and/or its affiliates. All rights reserved. 24 */ 25 26 /* 27 * Copyright (c) 2011-2012 Pawel Jakub Dawidek. All rights reserved. 28 * Portions Copyright 2011 Martin Matuska 29 * Copyright 2015, OmniTI Computer Consulting, Inc. All rights reserved. 30 * Copyright 2018 Nexenta Systems, Inc. All rights reserved. 31 * Copyright 2019 Joyent, Inc. 32 * Copyright (c) 2011, 2017 by Delphix. All rights reserved. 33 * Copyright (c) 2013 by Saso Kiselkov. All rights reserved. 34 * Copyright (c) 2013 Steven Hartland. All rights reserved. 35 * Copyright (c) 2014 Integros [integros.com] 36 * Copyright 2016 Toomas Soome <tsoome@me.com> 37 * Copyright (c) 2017, loli10K <ezomori.nozomu@gmail.com>. All rights reserved. 38 * Copyright 2017 RackTop Systems. 39 * Copyright (c) 2017, Datto, Inc. All rights reserved. 40 * Copyright 2021 The University of Queensland 41 * Copyright 2024 Oxide Computer Company 42 */ 43 44 /* 45 * ZFS ioctls. 46 * 47 * This file handles the ioctls to /dev/zfs, used for configuring ZFS storage 48 * pools and filesystems, e.g. with /sbin/zfs and /sbin/zpool. 49 * 50 * There are two ways that we handle ioctls: the legacy way where almost 51 * all of the logic is in the ioctl callback, and the new way where most 52 * of the marshalling is handled in the common entry point, zfsdev_ioctl(). 53 * 54 * Non-legacy ioctls should be registered by calling 55 * zfs_ioctl_register() from zfs_ioctl_init(). The ioctl is invoked 56 * from userland by lzc_ioctl(). 57 * 58 * The registration arguments are as follows: 59 * 60 * const char *name 61 * The name of the ioctl. This is used for history logging. If the 62 * ioctl returns successfully (the callback returns 0), and allow_log 63 * is true, then a history log entry will be recorded with the input & 64 * output nvlists. The log entry can be printed with "zpool history -i". 65 * 66 * zfs_ioc_t ioc 67 * The ioctl request number, which userland will pass to ioctl(2). 68 * We want newer versions of libzfs and libzfs_core to run against 69 * existing zfs kernel modules (i.e. a deferred reboot after an update). 70 * Therefore the ioctl numbers cannot change from release to release. 71 * 72 * zfs_secpolicy_func_t *secpolicy 73 * This function will be called before the zfs_ioc_func_t, to 74 * determine if this operation is permitted. It should return EPERM 75 * on failure, and 0 on success. Checks include determining if the 76 * dataset is visible in this zone, and if the user has either all 77 * zfs privileges in the zone (SYS_MOUNT), or has been granted permission 78 * to do this operation on this dataset with "zfs allow". 79 * 80 * zfs_ioc_namecheck_t namecheck 81 * This specifies what to expect in the zfs_cmd_t:zc_name -- a pool 82 * name, a dataset name, or nothing. If the name is not well-formed, 83 * the ioctl will fail and the callback will not be called. 84 * Therefore, the callback can assume that the name is well-formed 85 * (e.g. is null-terminated, doesn't have more than one '@' character, 86 * doesn't have invalid characters). 87 * 88 * zfs_ioc_poolcheck_t pool_check 89 * This specifies requirements on the pool state. If the pool does 90 * not meet them (is suspended or is readonly), the ioctl will fail 91 * and the callback will not be called. If any checks are specified 92 * (i.e. it is not POOL_CHECK_NONE), namecheck must not be NO_NAME. 93 * Multiple checks can be or-ed together (e.g. POOL_CHECK_SUSPENDED | 94 * POOL_CHECK_READONLY). 95 * 96 * zfs_ioc_key_t *nvl_keys 97 * The list of expected/allowable innvl input keys. This list is used 98 * to validate the nvlist input to the ioctl. 99 * 100 * boolean_t smush_outnvlist 101 * If smush_outnvlist is true, then the output is presumed to be a 102 * list of errors, and it will be "smushed" down to fit into the 103 * caller's buffer, by removing some entries and replacing them with a 104 * single "N_MORE_ERRORS" entry indicating how many were removed. See 105 * nvlist_smush() for details. If smush_outnvlist is false, and the 106 * outnvlist does not fit into the userland-provided buffer, then the 107 * ioctl will fail with ENOMEM. 108 * 109 * zfs_ioc_func_t *func 110 * The callback function that will perform the operation. 111 * 112 * The callback should return 0 on success, or an error number on 113 * failure. If the function fails, the userland ioctl will return -1, 114 * and errno will be set to the callback's return value. The callback 115 * will be called with the following arguments: 116 * 117 * const char *name 118 * The name of the pool or dataset to operate on, from 119 * zfs_cmd_t:zc_name. The 'namecheck' argument specifies the 120 * expected type (pool, dataset, or none). 121 * 122 * nvlist_t *innvl 123 * The input nvlist, deserialized from zfs_cmd_t:zc_nvlist_src. Or 124 * NULL if no input nvlist was provided. Changes to this nvlist are 125 * ignored. If the input nvlist could not be deserialized, the 126 * ioctl will fail and the callback will not be called. 127 * 128 * nvlist_t *outnvl 129 * The output nvlist, initially empty. The callback can fill it in, 130 * and it will be returned to userland by serializing it into 131 * zfs_cmd_t:zc_nvlist_dst. If it is non-empty, and serialization 132 * fails (e.g. because the caller didn't supply a large enough 133 * buffer), then the overall ioctl will fail. See the 134 * 'smush_nvlist' argument above for additional behaviors. 135 * 136 * There are two typical uses of the output nvlist: 137 * - To return state, e.g. property values. In this case, 138 * smush_outnvlist should be false. If the buffer was not large 139 * enough, the caller will reallocate a larger buffer and try 140 * the ioctl again. 141 * 142 * - To return multiple errors from an ioctl which makes on-disk 143 * changes. In this case, smush_outnvlist should be true. 144 * Ioctls which make on-disk modifications should generally not 145 * use the outnvl if they succeed, because the caller can not 146 * distinguish between the operation failing, and 147 * deserialization failing. 148 * 149 * IOCTL Interface Errors 150 * 151 * The following ioctl input errors can be returned: 152 * ZFS_ERR_IOC_CMD_UNAVAIL the ioctl number is not supported by kernel 153 * ZFS_ERR_IOC_ARG_UNAVAIL an input argument is not supported by kernel 154 * ZFS_ERR_IOC_ARG_REQUIRED a required input argument is missing 155 * ZFS_ERR_IOC_ARG_BADTYPE an input argument has an invalid type 156 */ 157 158 #include <sys/types.h> 159 #include <sys/param.h> 160 #include <sys/errno.h> 161 #include <sys/uio.h> 162 #include <sys/buf.h> 163 #include <sys/modctl.h> 164 #include <sys/open.h> 165 #include <sys/file.h> 166 #include <sys/kmem.h> 167 #include <sys/conf.h> 168 #include <sys/cmn_err.h> 169 #include <sys/stat.h> 170 #include <sys/zfs_ioctl.h> 171 #include <sys/zfs_vfsops.h> 172 #include <sys/zfs_znode.h> 173 #include <sys/zap.h> 174 #include <sys/spa.h> 175 #include <sys/spa_impl.h> 176 #include <sys/vdev.h> 177 #include <sys/priv_impl.h> 178 #include <sys/dmu.h> 179 #include <sys/dsl_dir.h> 180 #include <sys/dsl_dataset.h> 181 #include <sys/dsl_prop.h> 182 #include <sys/dsl_deleg.h> 183 #include <sys/dmu_objset.h> 184 #include <sys/dmu_impl.h> 185 #include <sys/dmu_tx.h> 186 #include <sys/ddi.h> 187 #include <sys/sunddi.h> 188 #include <sys/sunldi.h> 189 #include <sys/policy.h> 190 #include <sys/zone.h> 191 #include <sys/nvpair.h> 192 #include <sys/pathname.h> 193 #include <sys/mount.h> 194 #include <sys/sdt.h> 195 #include <sys/fs/zfs.h> 196 #include <sys/zfs_ctldir.h> 197 #include <sys/zfs_dir.h> 198 #include <sys/zfs_onexit.h> 199 #include <sys/zvol.h> 200 #include <sys/dsl_scan.h> 201 #include <sharefs/share.h> 202 #include <sys/dmu_objset.h> 203 #include <sys/dmu_recv.h> 204 #include <sys/dmu_send.h> 205 #include <sys/dsl_destroy.h> 206 #include <sys/dsl_bookmark.h> 207 #include <sys/dsl_userhold.h> 208 #include <sys/zfeature.h> 209 #include <sys/zcp.h> 210 #include <sys/zio_checksum.h> 211 #include <sys/vdev_removal.h> 212 #include <sys/vdev_impl.h> 213 #include <sys/vdev_initialize.h> 214 #include <sys/vdev_trim.h> 215 #include <sys/dsl_crypt.h> 216 217 #include "zfs_namecheck.h" 218 #include "zfs_prop.h" 219 #include "zfs_deleg.h" 220 #include "zfs_comutil.h" 221 222 #include "lua.h" 223 #include "lauxlib.h" 224 225 extern struct modlfs zfs_modlfs; 226 227 extern void zfs_init(void); 228 extern void zfs_fini(void); 229 230 ldi_ident_t zfs_li = NULL; 231 dev_info_t *zfs_dip; 232 233 uint_t zfs_fsyncer_key; 234 extern uint_t rrw_tsd_key; 235 static uint_t zfs_allow_log_key; 236 237 typedef int zfs_ioc_legacy_func_t(zfs_cmd_t *); 238 typedef int zfs_ioc_func_t(const char *, nvlist_t *, nvlist_t *); 239 typedef int zfs_secpolicy_func_t(zfs_cmd_t *, nvlist_t *, cred_t *); 240 241 /* 242 * IOC Keys are used to document and validate user->kernel interface inputs. 243 * See zfs_keys_recv_new for an example declaration. Any key name that is not 244 * listed will be rejected as input. 245 * 246 * The keyname 'optional' is always allowed, and must be an nvlist if present. 247 * Arguments which older kernels can safely ignore can be placed under the 248 * "optional" key. 249 * 250 * When adding new keys to an existing ioc for new functionality, consider: 251 * - adding an entry into zfs_sysfs.c zfs_features[] list 252 * - updating the libzfs_input_check.c test utility 253 * 254 * Note: in the ZK_WILDCARDLIST case, the name serves as documentation 255 * for the expected name (bookmark, snapshot, property, etc) but there 256 * is no validation in the preflight zfs_check_input_nvpairs() check. 257 */ 258 typedef enum { 259 ZK_OPTIONAL = 1 << 0, /* pair is optional */ 260 ZK_WILDCARDLIST = 1 << 1, /* one or more unspecified key names */ 261 } ioc_key_flag_t; 262 263 /* DATA_TYPE_ANY is used when zkey_type can vary. */ 264 #define DATA_TYPE_ANY DATA_TYPE_UNKNOWN 265 266 typedef struct zfs_ioc_key { 267 const char *zkey_name; 268 data_type_t zkey_type; 269 ioc_key_flag_t zkey_flags; 270 } zfs_ioc_key_t; 271 272 typedef enum { 273 NO_NAME, 274 POOL_NAME, 275 DATASET_NAME 276 } zfs_ioc_namecheck_t; 277 278 typedef enum { 279 POOL_CHECK_NONE = 1 << 0, 280 POOL_CHECK_SUSPENDED = 1 << 1, 281 POOL_CHECK_READONLY = 1 << 2, 282 } zfs_ioc_poolcheck_t; 283 284 typedef struct zfs_ioc_vec { 285 zfs_ioc_legacy_func_t *zvec_legacy_func; 286 zfs_ioc_func_t *zvec_func; 287 zfs_secpolicy_func_t *zvec_secpolicy; 288 zfs_ioc_namecheck_t zvec_namecheck; 289 boolean_t zvec_allow_log; 290 zfs_ioc_poolcheck_t zvec_pool_check; 291 boolean_t zvec_smush_outnvlist; 292 const char *zvec_name; 293 const zfs_ioc_key_t *zvec_nvl_keys; 294 size_t zvec_nvl_key_count; 295 } zfs_ioc_vec_t; 296 297 /* This array is indexed by zfs_userquota_prop_t */ 298 static const char *userquota_perms[] = { 299 ZFS_DELEG_PERM_USERUSED, 300 ZFS_DELEG_PERM_USERQUOTA, 301 ZFS_DELEG_PERM_GROUPUSED, 302 ZFS_DELEG_PERM_GROUPQUOTA, 303 ZFS_DELEG_PERM_USEROBJUSED, 304 ZFS_DELEG_PERM_USEROBJQUOTA, 305 ZFS_DELEG_PERM_GROUPOBJUSED, 306 ZFS_DELEG_PERM_GROUPOBJQUOTA, 307 ZFS_DELEG_PERM_PROJECTUSED, 308 ZFS_DELEG_PERM_PROJECTQUOTA, 309 ZFS_DELEG_PERM_PROJECTOBJUSED, 310 ZFS_DELEG_PERM_PROJECTOBJQUOTA, 311 }; 312 313 static int zfs_ioc_userspace_upgrade(zfs_cmd_t *zc); 314 static int zfs_ioc_id_quota_upgrade(zfs_cmd_t *zc); 315 static int zfs_check_settable(const char *name, nvpair_t *property, 316 cred_t *cr); 317 static int zfs_check_clearable(char *dataset, nvlist_t *props, 318 nvlist_t **errors); 319 static int zfs_fill_zplprops_root(uint64_t, nvlist_t *, nvlist_t *, 320 boolean_t *); 321 int zfs_set_prop_nvlist(const char *, zprop_source_t, nvlist_t *, nvlist_t *); 322 static int get_nvlist(uint64_t nvl, uint64_t size, int iflag, nvlist_t **nvp); 323 324 static int zfs_prop_activate_feature(spa_t *spa, spa_feature_t feature); 325 326 /* _NOTE(PRINTFLIKE(4)) - this is printf-like, but lint is too whiney */ 327 void 328 __dprintf(const char *file, const char *func, int line, const char *fmt, ...) 329 { 330 const char *newfile; 331 char buf[512]; 332 va_list adx; 333 334 /* 335 * Get rid of annoying "../common/" prefix to filename. 336 */ 337 newfile = strrchr(file, '/'); 338 if (newfile != NULL) { 339 newfile = newfile + 1; /* Get rid of leading / */ 340 } else { 341 newfile = file; 342 } 343 344 va_start(adx, fmt); 345 (void) vsnprintf(buf, sizeof (buf), fmt, adx); 346 va_end(adx); 347 348 /* 349 * To get this data, use the zfs-dprintf probe as so: 350 * dtrace -q -n 'zfs-dprintf \ 351 * /stringof(arg0) == "dbuf.c"/ \ 352 * {printf("%s: %s", stringof(arg1), stringof(arg3))}' 353 * arg0 = file name 354 * arg1 = function name 355 * arg2 = line number 356 * arg3 = message 357 */ 358 DTRACE_PROBE4(zfs__dprintf, 359 char *, newfile, char *, func, int, line, char *, buf); 360 } 361 362 static void 363 history_str_free(char *buf) 364 { 365 kmem_free(buf, HIS_MAX_RECORD_LEN); 366 } 367 368 static char * 369 history_str_get(zfs_cmd_t *zc) 370 { 371 char *buf; 372 373 if (zc->zc_history == 0) 374 return (NULL); 375 376 buf = kmem_alloc(HIS_MAX_RECORD_LEN, KM_SLEEP); 377 if (copyinstr((void *)(uintptr_t)zc->zc_history, 378 buf, HIS_MAX_RECORD_LEN, NULL) != 0) { 379 history_str_free(buf); 380 return (NULL); 381 } 382 383 buf[HIS_MAX_RECORD_LEN -1] = '\0'; 384 385 return (buf); 386 } 387 388 /* 389 * Check to see if the named dataset is currently defined as bootable 390 */ 391 static boolean_t 392 zfs_is_bootfs(const char *name) 393 { 394 objset_t *os; 395 396 if (dmu_objset_hold(name, FTAG, &os) == 0) { 397 boolean_t ret; 398 ret = (dmu_objset_id(os) == spa_bootfs(dmu_objset_spa(os))); 399 dmu_objset_rele(os, FTAG); 400 return (ret); 401 } 402 return (B_FALSE); 403 } 404 405 /* 406 * Return non-zero if the spa version is less than requested version. 407 */ 408 static int 409 zfs_earlier_version(const char *name, int version) 410 { 411 spa_t *spa; 412 413 if (spa_open(name, &spa, FTAG) == 0) { 414 if (spa_version(spa) < version) { 415 spa_close(spa, FTAG); 416 return (1); 417 } 418 spa_close(spa, FTAG); 419 } 420 return (0); 421 } 422 423 /* 424 * Return TRUE if the ZPL version is less than requested version. 425 */ 426 static boolean_t 427 zpl_earlier_version(const char *name, int version) 428 { 429 objset_t *os; 430 boolean_t rc = B_TRUE; 431 432 if (dmu_objset_hold(name, FTAG, &os) == 0) { 433 uint64_t zplversion; 434 435 if (dmu_objset_type(os) != DMU_OST_ZFS) { 436 dmu_objset_rele(os, FTAG); 437 return (B_TRUE); 438 } 439 /* XXX reading from non-owned objset */ 440 if (zfs_get_zplprop(os, ZFS_PROP_VERSION, &zplversion) == 0) 441 rc = zplversion < version; 442 dmu_objset_rele(os, FTAG); 443 } 444 return (rc); 445 } 446 447 static void 448 zfs_log_history(zfs_cmd_t *zc) 449 { 450 spa_t *spa; 451 char *buf; 452 453 if ((buf = history_str_get(zc)) == NULL) 454 return; 455 456 if (spa_open(zc->zc_name, &spa, FTAG) == 0) { 457 if (spa_version(spa) >= SPA_VERSION_ZPOOL_HISTORY) 458 (void) spa_history_log(spa, buf); 459 spa_close(spa, FTAG); 460 } 461 history_str_free(buf); 462 } 463 464 /* 465 * Policy for top-level read operations (list pools). Requires no privileges, 466 * and can be used in the local zone, as there is no associated dataset. 467 */ 468 /* ARGSUSED */ 469 static int 470 zfs_secpolicy_none(zfs_cmd_t *zc, nvlist_t *innvl, cred_t *cr) 471 { 472 return (0); 473 } 474 475 /* 476 * Policy for dataset read operations (list children, get statistics). Requires 477 * no privileges, but must be visible in the local zone. 478 */ 479 /* ARGSUSED */ 480 static int 481 zfs_secpolicy_read(zfs_cmd_t *zc, nvlist_t *innvl, cred_t *cr) 482 { 483 if (INGLOBALZONE(curproc) || 484 zone_dataset_visible(zc->zc_name, NULL)) 485 return (0); 486 487 return (SET_ERROR(ENOENT)); 488 } 489 490 static int 491 zfs_dozonecheck_impl(const char *dataset, uint64_t zoned, cred_t *cr) 492 { 493 int writable = 1; 494 495 /* 496 * The dataset must be visible by this zone -- check this first 497 * so they don't see EPERM on something they shouldn't know about. 498 */ 499 if (!INGLOBALZONE(curproc) && 500 !zone_dataset_visible(dataset, &writable)) 501 return (SET_ERROR(ENOENT)); 502 503 if (INGLOBALZONE(curproc)) { 504 /* 505 * If the fs is zoned, only root can access it from the 506 * global zone. 507 */ 508 if (secpolicy_zfs(cr) && zoned) 509 return (SET_ERROR(EPERM)); 510 } else { 511 /* 512 * If we are in a local zone, the 'zoned' property must be set. 513 */ 514 if (!zoned) 515 return (SET_ERROR(EPERM)); 516 517 /* must be writable by this zone */ 518 if (!writable) 519 return (SET_ERROR(EPERM)); 520 } 521 return (0); 522 } 523 524 static int 525 zfs_dozonecheck(const char *dataset, cred_t *cr) 526 { 527 uint64_t zoned; 528 529 if (dsl_prop_get_integer(dataset, "zoned", &zoned, NULL)) 530 return (SET_ERROR(ENOENT)); 531 532 return (zfs_dozonecheck_impl(dataset, zoned, cr)); 533 } 534 535 static int 536 zfs_dozonecheck_ds(const char *dataset, dsl_dataset_t *ds, cred_t *cr) 537 { 538 uint64_t zoned; 539 540 if (dsl_prop_get_int_ds(ds, "zoned", &zoned)) 541 return (SET_ERROR(ENOENT)); 542 543 return (zfs_dozonecheck_impl(dataset, zoned, cr)); 544 } 545 546 static int 547 zfs_secpolicy_write_perms_ds(const char *name, dsl_dataset_t *ds, 548 const char *perm, cred_t *cr) 549 { 550 int error; 551 552 error = zfs_dozonecheck_ds(name, ds, cr); 553 if (error == 0) { 554 error = secpolicy_zfs(cr); 555 if (error != 0) 556 error = dsl_deleg_access_impl(ds, perm, cr); 557 } 558 return (error); 559 } 560 561 static int 562 zfs_secpolicy_write_perms(const char *name, const char *perm, cred_t *cr) 563 { 564 int error; 565 dsl_dataset_t *ds; 566 dsl_pool_t *dp; 567 568 /* 569 * First do a quick check for root in the global zone, which 570 * is allowed to do all write_perms. This ensures that zfs_ioc_* 571 * will get to handle nonexistent datasets. 572 */ 573 if (INGLOBALZONE(curproc) && secpolicy_zfs(cr) == 0) 574 return (0); 575 576 error = dsl_pool_hold(name, FTAG, &dp); 577 if (error != 0) 578 return (error); 579 580 error = dsl_dataset_hold(dp, name, FTAG, &ds); 581 if (error != 0) { 582 dsl_pool_rele(dp, FTAG); 583 return (error); 584 } 585 586 error = zfs_secpolicy_write_perms_ds(name, ds, perm, cr); 587 588 dsl_dataset_rele(ds, FTAG); 589 dsl_pool_rele(dp, FTAG); 590 return (error); 591 } 592 593 /* 594 * Policy for setting the security label property. 595 * 596 * Returns 0 for success, non-zero for access and other errors. 597 */ 598 static int 599 zfs_set_slabel_policy(const char *name, char *strval, cred_t *cr) 600 { 601 char ds_hexsl[MAXNAMELEN]; 602 bslabel_t ds_sl, new_sl; 603 boolean_t new_default = FALSE; 604 uint64_t zoned; 605 int needed_priv = -1; 606 int error; 607 608 /* First get the existing dataset label. */ 609 error = dsl_prop_get(name, zfs_prop_to_name(ZFS_PROP_MLSLABEL), 610 1, sizeof (ds_hexsl), &ds_hexsl, NULL); 611 if (error != 0) 612 return (SET_ERROR(EPERM)); 613 614 if (strcasecmp(strval, ZFS_MLSLABEL_DEFAULT) == 0) 615 new_default = TRUE; 616 617 /* The label must be translatable */ 618 if (!new_default && (hexstr_to_label(strval, &new_sl) != 0)) 619 return (SET_ERROR(EINVAL)); 620 621 /* 622 * In a non-global zone, disallow attempts to set a label that 623 * doesn't match that of the zone; otherwise no other checks 624 * are needed. 625 */ 626 if (!INGLOBALZONE(curproc)) { 627 if (new_default || !blequal(&new_sl, CR_SL(CRED()))) 628 return (SET_ERROR(EPERM)); 629 return (0); 630 } 631 632 /* 633 * For global-zone datasets (i.e., those whose zoned property is 634 * "off", verify that the specified new label is valid for the 635 * global zone. 636 */ 637 if (dsl_prop_get_integer(name, 638 zfs_prop_to_name(ZFS_PROP_ZONED), &zoned, NULL)) 639 return (SET_ERROR(EPERM)); 640 if (!zoned) { 641 if (zfs_check_global_label(name, strval) != 0) 642 return (SET_ERROR(EPERM)); 643 } 644 645 /* 646 * If the existing dataset label is nondefault, check if the 647 * dataset is mounted (label cannot be changed while mounted). 648 * Get the zfsvfs; if there isn't one, then the dataset isn't 649 * mounted (or isn't a dataset, doesn't exist, ...). 650 */ 651 if (strcasecmp(ds_hexsl, ZFS_MLSLABEL_DEFAULT) != 0) { 652 objset_t *os; 653 static char *setsl_tag = "setsl_tag"; 654 655 /* 656 * Try to own the dataset; abort if there is any error, 657 * (e.g., already mounted, in use, or other error). 658 */ 659 error = dmu_objset_own(name, DMU_OST_ZFS, B_TRUE, B_TRUE, 660 setsl_tag, &os); 661 if (error != 0) 662 return (SET_ERROR(EPERM)); 663 664 dmu_objset_disown(os, B_TRUE, setsl_tag); 665 666 if (new_default) { 667 needed_priv = PRIV_FILE_DOWNGRADE_SL; 668 goto out_check; 669 } 670 671 if (hexstr_to_label(strval, &new_sl) != 0) 672 return (SET_ERROR(EPERM)); 673 674 if (blstrictdom(&ds_sl, &new_sl)) 675 needed_priv = PRIV_FILE_DOWNGRADE_SL; 676 else if (blstrictdom(&new_sl, &ds_sl)) 677 needed_priv = PRIV_FILE_UPGRADE_SL; 678 } else { 679 /* dataset currently has a default label */ 680 if (!new_default) 681 needed_priv = PRIV_FILE_UPGRADE_SL; 682 } 683 684 out_check: 685 if (needed_priv != -1) 686 return (PRIV_POLICY(cr, needed_priv, B_FALSE, EPERM, NULL)); 687 return (0); 688 } 689 690 static int 691 zfs_secpolicy_setprop(const char *dsname, zfs_prop_t prop, nvpair_t *propval, 692 cred_t *cr) 693 { 694 char *strval; 695 696 /* 697 * Check permissions for special properties. 698 */ 699 switch (prop) { 700 case ZFS_PROP_ZONED: 701 /* 702 * Disallow setting of 'zoned' from within a local zone. 703 */ 704 if (!INGLOBALZONE(curproc)) 705 return (SET_ERROR(EPERM)); 706 break; 707 708 case ZFS_PROP_QUOTA: 709 case ZFS_PROP_FILESYSTEM_LIMIT: 710 case ZFS_PROP_SNAPSHOT_LIMIT: 711 if (!INGLOBALZONE(curproc)) { 712 uint64_t zoned; 713 char setpoint[ZFS_MAX_DATASET_NAME_LEN]; 714 /* 715 * Unprivileged users are allowed to modify the 716 * limit on things *under* (ie. contained by) 717 * the thing they own. 718 */ 719 if (dsl_prop_get_integer(dsname, "zoned", &zoned, 720 setpoint)) 721 return (SET_ERROR(EPERM)); 722 if (!zoned || strlen(dsname) <= strlen(setpoint)) 723 return (SET_ERROR(EPERM)); 724 } 725 break; 726 727 case ZFS_PROP_MLSLABEL: 728 if (!is_system_labeled()) 729 return (SET_ERROR(EPERM)); 730 731 if (nvpair_value_string(propval, &strval) == 0) { 732 int err; 733 734 err = zfs_set_slabel_policy(dsname, strval, CRED()); 735 if (err != 0) 736 return (err); 737 } 738 break; 739 } 740 741 return (zfs_secpolicy_write_perms(dsname, zfs_prop_to_name(prop), cr)); 742 } 743 744 /* ARGSUSED */ 745 static int 746 zfs_secpolicy_set_fsacl(zfs_cmd_t *zc, nvlist_t *innvl, cred_t *cr) 747 { 748 int error; 749 750 error = zfs_dozonecheck(zc->zc_name, cr); 751 if (error != 0) 752 return (error); 753 754 /* 755 * permission to set permissions will be evaluated later in 756 * dsl_deleg_can_allow() 757 */ 758 return (0); 759 } 760 761 /* ARGSUSED */ 762 static int 763 zfs_secpolicy_rollback(zfs_cmd_t *zc, nvlist_t *innvl, cred_t *cr) 764 { 765 return (zfs_secpolicy_write_perms(zc->zc_name, 766 ZFS_DELEG_PERM_ROLLBACK, cr)); 767 } 768 769 /* ARGSUSED */ 770 static int 771 zfs_secpolicy_send(zfs_cmd_t *zc, nvlist_t *innvl, cred_t *cr) 772 { 773 dsl_pool_t *dp; 774 dsl_dataset_t *ds; 775 char *cp; 776 int error; 777 778 /* 779 * Generate the current snapshot name from the given objsetid, then 780 * use that name for the secpolicy/zone checks. 781 */ 782 cp = strchr(zc->zc_name, '@'); 783 if (cp == NULL) 784 return (SET_ERROR(EINVAL)); 785 error = dsl_pool_hold(zc->zc_name, FTAG, &dp); 786 if (error != 0) 787 return (error); 788 789 error = dsl_dataset_hold_obj(dp, zc->zc_sendobj, FTAG, &ds); 790 if (error != 0) { 791 dsl_pool_rele(dp, FTAG); 792 return (error); 793 } 794 795 dsl_dataset_name(ds, zc->zc_name); 796 797 error = zfs_secpolicy_write_perms_ds(zc->zc_name, ds, 798 ZFS_DELEG_PERM_SEND, cr); 799 dsl_dataset_rele(ds, FTAG); 800 dsl_pool_rele(dp, FTAG); 801 802 return (error); 803 } 804 805 /* ARGSUSED */ 806 static int 807 zfs_secpolicy_send_new(zfs_cmd_t *zc, nvlist_t *innvl, cred_t *cr) 808 { 809 return (zfs_secpolicy_write_perms(zc->zc_name, 810 ZFS_DELEG_PERM_SEND, cr)); 811 } 812 813 /* ARGSUSED */ 814 static int 815 zfs_secpolicy_deleg_share(zfs_cmd_t *zc, nvlist_t *innvl, cred_t *cr) 816 { 817 vnode_t *vp; 818 int error; 819 820 if ((error = lookupname(zc->zc_value, UIO_SYSSPACE, 821 NO_FOLLOW, NULL, &vp)) != 0) 822 return (error); 823 824 /* Now make sure mntpnt and dataset are ZFS */ 825 826 if (vp->v_vfsp->vfs_fstype != zfsfstype || 827 (strcmp((char *)refstr_value(vp->v_vfsp->vfs_resource), 828 zc->zc_name) != 0)) { 829 VN_RELE(vp); 830 return (SET_ERROR(EPERM)); 831 } 832 833 VN_RELE(vp); 834 return (dsl_deleg_access(zc->zc_name, 835 ZFS_DELEG_PERM_SHARE, cr)); 836 } 837 838 int 839 zfs_secpolicy_share(zfs_cmd_t *zc, nvlist_t *innvl, cred_t *cr) 840 { 841 if (secpolicy_nfs(cr) == 0) { 842 return (0); 843 } else { 844 return (zfs_secpolicy_deleg_share(zc, innvl, cr)); 845 } 846 } 847 848 int 849 zfs_secpolicy_smb_acl(zfs_cmd_t *zc, nvlist_t *innvl, cred_t *cr) 850 { 851 if (secpolicy_smb(cr) == 0) { 852 return (0); 853 } else { 854 return (zfs_secpolicy_deleg_share(zc, innvl, cr)); 855 } 856 } 857 858 static int 859 zfs_get_parent(const char *datasetname, char *parent, int parentsize) 860 { 861 char *cp; 862 863 /* 864 * Remove the @bla or /bla from the end of the name to get the parent. 865 */ 866 (void) strncpy(parent, datasetname, parentsize); 867 cp = strrchr(parent, '@'); 868 if (cp != NULL) { 869 cp[0] = '\0'; 870 } else { 871 cp = strrchr(parent, '/'); 872 if (cp == NULL) 873 return (SET_ERROR(ENOENT)); 874 cp[0] = '\0'; 875 } 876 877 return (0); 878 } 879 880 int 881 zfs_secpolicy_destroy_perms(const char *name, cred_t *cr) 882 { 883 int error; 884 885 if ((error = zfs_secpolicy_write_perms(name, 886 ZFS_DELEG_PERM_MOUNT, cr)) != 0) 887 return (error); 888 889 return (zfs_secpolicy_write_perms(name, ZFS_DELEG_PERM_DESTROY, cr)); 890 } 891 892 /* ARGSUSED */ 893 static int 894 zfs_secpolicy_destroy(zfs_cmd_t *zc, nvlist_t *innvl, cred_t *cr) 895 { 896 return (zfs_secpolicy_destroy_perms(zc->zc_name, cr)); 897 } 898 899 /* 900 * Destroying snapshots with delegated permissions requires 901 * descendant mount and destroy permissions. 902 */ 903 /* ARGSUSED */ 904 static int 905 zfs_secpolicy_destroy_snaps(zfs_cmd_t *zc, nvlist_t *innvl, cred_t *cr) 906 { 907 nvlist_t *snaps; 908 nvpair_t *pair, *nextpair; 909 int error = 0; 910 911 snaps = fnvlist_lookup_nvlist(innvl, "snaps"); 912 913 for (pair = nvlist_next_nvpair(snaps, NULL); pair != NULL; 914 pair = nextpair) { 915 nextpair = nvlist_next_nvpair(snaps, pair); 916 error = zfs_secpolicy_destroy_perms(nvpair_name(pair), cr); 917 if (error == ENOENT) { 918 /* 919 * Ignore any snapshots that don't exist (we consider 920 * them "already destroyed"). Remove the name from the 921 * nvl here in case the snapshot is created between 922 * now and when we try to destroy it (in which case 923 * we don't want to destroy it since we haven't 924 * checked for permission). 925 */ 926 fnvlist_remove_nvpair(snaps, pair); 927 error = 0; 928 } 929 if (error != 0) 930 break; 931 } 932 933 return (error); 934 } 935 936 int 937 zfs_secpolicy_rename_perms(const char *from, const char *to, cred_t *cr) 938 { 939 char parentname[ZFS_MAX_DATASET_NAME_LEN]; 940 int error; 941 942 if ((error = zfs_secpolicy_write_perms(from, 943 ZFS_DELEG_PERM_RENAME, cr)) != 0) 944 return (error); 945 946 if ((error = zfs_secpolicy_write_perms(from, 947 ZFS_DELEG_PERM_MOUNT, cr)) != 0) 948 return (error); 949 950 if ((error = zfs_get_parent(to, parentname, 951 sizeof (parentname))) != 0) 952 return (error); 953 954 if ((error = zfs_secpolicy_write_perms(parentname, 955 ZFS_DELEG_PERM_CREATE, cr)) != 0) 956 return (error); 957 958 if ((error = zfs_secpolicy_write_perms(parentname, 959 ZFS_DELEG_PERM_MOUNT, cr)) != 0) 960 return (error); 961 962 return (error); 963 } 964 965 /* ARGSUSED */ 966 static int 967 zfs_secpolicy_rename(zfs_cmd_t *zc, nvlist_t *innvl, cred_t *cr) 968 { 969 return (zfs_secpolicy_rename_perms(zc->zc_name, zc->zc_value, cr)); 970 } 971 972 /* ARGSUSED */ 973 static int 974 zfs_secpolicy_promote(zfs_cmd_t *zc, nvlist_t *innvl, cred_t *cr) 975 { 976 dsl_pool_t *dp; 977 dsl_dataset_t *clone; 978 int error; 979 980 error = zfs_secpolicy_write_perms(zc->zc_name, 981 ZFS_DELEG_PERM_PROMOTE, cr); 982 if (error != 0) 983 return (error); 984 985 error = dsl_pool_hold(zc->zc_name, FTAG, &dp); 986 if (error != 0) 987 return (error); 988 989 error = dsl_dataset_hold(dp, zc->zc_name, FTAG, &clone); 990 991 if (error == 0) { 992 char parentname[ZFS_MAX_DATASET_NAME_LEN]; 993 dsl_dataset_t *origin = NULL; 994 dsl_dir_t *dd; 995 dd = clone->ds_dir; 996 997 error = dsl_dataset_hold_obj(dd->dd_pool, 998 dsl_dir_phys(dd)->dd_origin_obj, FTAG, &origin); 999 if (error != 0) { 1000 dsl_dataset_rele(clone, FTAG); 1001 dsl_pool_rele(dp, FTAG); 1002 return (error); 1003 } 1004 1005 error = zfs_secpolicy_write_perms_ds(zc->zc_name, clone, 1006 ZFS_DELEG_PERM_MOUNT, cr); 1007 1008 dsl_dataset_name(origin, parentname); 1009 if (error == 0) { 1010 error = zfs_secpolicy_write_perms_ds(parentname, origin, 1011 ZFS_DELEG_PERM_PROMOTE, cr); 1012 } 1013 dsl_dataset_rele(clone, FTAG); 1014 dsl_dataset_rele(origin, FTAG); 1015 } 1016 dsl_pool_rele(dp, FTAG); 1017 return (error); 1018 } 1019 1020 /* ARGSUSED */ 1021 static int 1022 zfs_secpolicy_recv(zfs_cmd_t *zc, nvlist_t *innvl, cred_t *cr) 1023 { 1024 int error; 1025 1026 if ((error = zfs_secpolicy_write_perms(zc->zc_name, 1027 ZFS_DELEG_PERM_RECEIVE, cr)) != 0) 1028 return (error); 1029 1030 if ((error = zfs_secpolicy_write_perms(zc->zc_name, 1031 ZFS_DELEG_PERM_MOUNT, cr)) != 0) 1032 return (error); 1033 1034 return (zfs_secpolicy_write_perms(zc->zc_name, 1035 ZFS_DELEG_PERM_CREATE, cr)); 1036 } 1037 1038 int 1039 zfs_secpolicy_snapshot_perms(const char *name, cred_t *cr) 1040 { 1041 return (zfs_secpolicy_write_perms(name, 1042 ZFS_DELEG_PERM_SNAPSHOT, cr)); 1043 } 1044 1045 /* 1046 * Check for permission to create each snapshot in the nvlist. 1047 */ 1048 /* ARGSUSED */ 1049 static int 1050 zfs_secpolicy_snapshot(zfs_cmd_t *zc, nvlist_t *innvl, cred_t *cr) 1051 { 1052 nvlist_t *snaps; 1053 int error = 0; 1054 nvpair_t *pair; 1055 1056 snaps = fnvlist_lookup_nvlist(innvl, "snaps"); 1057 1058 for (pair = nvlist_next_nvpair(snaps, NULL); pair != NULL; 1059 pair = nvlist_next_nvpair(snaps, pair)) { 1060 char *name = nvpair_name(pair); 1061 char *atp = strchr(name, '@'); 1062 1063 if (atp == NULL) { 1064 error = SET_ERROR(EINVAL); 1065 break; 1066 } 1067 *atp = '\0'; 1068 error = zfs_secpolicy_snapshot_perms(name, cr); 1069 *atp = '@'; 1070 if (error != 0) 1071 break; 1072 } 1073 return (error); 1074 } 1075 1076 /* 1077 * Check for permission to create each bookmark in the nvlist. 1078 */ 1079 /* ARGSUSED */ 1080 static int 1081 zfs_secpolicy_bookmark(zfs_cmd_t *zc, nvlist_t *innvl, cred_t *cr) 1082 { 1083 int error = 0; 1084 1085 for (nvpair_t *pair = nvlist_next_nvpair(innvl, NULL); 1086 pair != NULL; pair = nvlist_next_nvpair(innvl, pair)) { 1087 char *name = nvpair_name(pair); 1088 char *hashp = strchr(name, '#'); 1089 1090 if (hashp == NULL) { 1091 error = SET_ERROR(EINVAL); 1092 break; 1093 } 1094 *hashp = '\0'; 1095 error = zfs_secpolicy_write_perms(name, 1096 ZFS_DELEG_PERM_BOOKMARK, cr); 1097 *hashp = '#'; 1098 if (error != 0) 1099 break; 1100 } 1101 return (error); 1102 } 1103 1104 /* ARGSUSED */ 1105 static int 1106 zfs_secpolicy_remap(zfs_cmd_t *zc, nvlist_t *innvl, cred_t *cr) 1107 { 1108 return (zfs_secpolicy_write_perms(zc->zc_name, 1109 ZFS_DELEG_PERM_REMAP, cr)); 1110 } 1111 1112 /* ARGSUSED */ 1113 static int 1114 zfs_secpolicy_destroy_bookmarks(zfs_cmd_t *zc, nvlist_t *innvl, cred_t *cr) 1115 { 1116 nvpair_t *pair, *nextpair; 1117 int error = 0; 1118 1119 for (pair = nvlist_next_nvpair(innvl, NULL); pair != NULL; 1120 pair = nextpair) { 1121 char *name = nvpair_name(pair); 1122 char *hashp = strchr(name, '#'); 1123 nextpair = nvlist_next_nvpair(innvl, pair); 1124 1125 if (hashp == NULL) { 1126 error = SET_ERROR(EINVAL); 1127 break; 1128 } 1129 1130 *hashp = '\0'; 1131 error = zfs_secpolicy_write_perms(name, 1132 ZFS_DELEG_PERM_DESTROY, cr); 1133 *hashp = '#'; 1134 if (error == ENOENT) { 1135 /* 1136 * Ignore any filesystems that don't exist (we consider 1137 * their bookmarks "already destroyed"). Remove 1138 * the name from the nvl here in case the filesystem 1139 * is created between now and when we try to destroy 1140 * the bookmark (in which case we don't want to 1141 * destroy it since we haven't checked for permission). 1142 */ 1143 fnvlist_remove_nvpair(innvl, pair); 1144 error = 0; 1145 } 1146 if (error != 0) 1147 break; 1148 } 1149 1150 return (error); 1151 } 1152 1153 /* ARGSUSED */ 1154 static int 1155 zfs_secpolicy_log_history(zfs_cmd_t *zc, nvlist_t *innvl, cred_t *cr) 1156 { 1157 /* 1158 * Even root must have a proper TSD so that we know what pool 1159 * to log to. 1160 */ 1161 if (tsd_get(zfs_allow_log_key) == NULL) 1162 return (SET_ERROR(EPERM)); 1163 return (0); 1164 } 1165 1166 static int 1167 zfs_secpolicy_create_clone(zfs_cmd_t *zc, nvlist_t *innvl, cred_t *cr) 1168 { 1169 char parentname[ZFS_MAX_DATASET_NAME_LEN]; 1170 int error; 1171 char *origin; 1172 1173 if ((error = zfs_get_parent(zc->zc_name, parentname, 1174 sizeof (parentname))) != 0) 1175 return (error); 1176 1177 if (nvlist_lookup_string(innvl, "origin", &origin) == 0 && 1178 (error = zfs_secpolicy_write_perms(origin, 1179 ZFS_DELEG_PERM_CLONE, cr)) != 0) 1180 return (error); 1181 1182 if ((error = zfs_secpolicy_write_perms(parentname, 1183 ZFS_DELEG_PERM_CREATE, cr)) != 0) 1184 return (error); 1185 1186 return (zfs_secpolicy_write_perms(parentname, 1187 ZFS_DELEG_PERM_MOUNT, cr)); 1188 } 1189 1190 /* 1191 * Policy for pool operations - create/destroy pools, add vdevs, etc. Requires 1192 * SYS_CONFIG privilege, which is not available in a local zone. 1193 */ 1194 /* ARGSUSED */ 1195 static int 1196 zfs_secpolicy_config(zfs_cmd_t *zc, nvlist_t *innvl, cred_t *cr) 1197 { 1198 if (secpolicy_sys_config(cr, B_FALSE) != 0) 1199 return (SET_ERROR(EPERM)); 1200 1201 return (0); 1202 } 1203 1204 /* 1205 * Policy for object to name lookups. 1206 */ 1207 /* ARGSUSED */ 1208 static int 1209 zfs_secpolicy_diff(zfs_cmd_t *zc, nvlist_t *innvl, cred_t *cr) 1210 { 1211 int error; 1212 1213 if ((error = secpolicy_sys_config(cr, B_FALSE)) == 0) 1214 return (0); 1215 1216 error = zfs_secpolicy_write_perms(zc->zc_name, ZFS_DELEG_PERM_DIFF, cr); 1217 return (error); 1218 } 1219 1220 /* 1221 * Policy for fault injection. Requires all privileges. 1222 */ 1223 /* ARGSUSED */ 1224 static int 1225 zfs_secpolicy_inject(zfs_cmd_t *zc, nvlist_t *innvl, cred_t *cr) 1226 { 1227 return (secpolicy_zinject(cr)); 1228 } 1229 1230 /* ARGSUSED */ 1231 static int 1232 zfs_secpolicy_inherit_prop(zfs_cmd_t *zc, nvlist_t *innvl, cred_t *cr) 1233 { 1234 zfs_prop_t prop = zfs_name_to_prop(zc->zc_value); 1235 1236 if (prop == ZPROP_INVAL) { 1237 if (!zfs_prop_user(zc->zc_value)) 1238 return (SET_ERROR(EINVAL)); 1239 return (zfs_secpolicy_write_perms(zc->zc_name, 1240 ZFS_DELEG_PERM_USERPROP, cr)); 1241 } else { 1242 return (zfs_secpolicy_setprop(zc->zc_name, prop, 1243 NULL, cr)); 1244 } 1245 } 1246 1247 static int 1248 zfs_secpolicy_userspace_one(zfs_cmd_t *zc, nvlist_t *innvl, cred_t *cr) 1249 { 1250 int err = zfs_secpolicy_read(zc, innvl, cr); 1251 if (err) 1252 return (err); 1253 1254 if (zc->zc_objset_type >= ZFS_NUM_USERQUOTA_PROPS) 1255 return (SET_ERROR(EINVAL)); 1256 1257 if (zc->zc_value[0] == 0) { 1258 /* 1259 * They are asking about a posix uid/gid. If it's 1260 * themself, allow it. 1261 */ 1262 if (zc->zc_objset_type == ZFS_PROP_USERUSED || 1263 zc->zc_objset_type == ZFS_PROP_USERQUOTA || 1264 zc->zc_objset_type == ZFS_PROP_USEROBJUSED || 1265 zc->zc_objset_type == ZFS_PROP_USEROBJQUOTA) { 1266 if (zc->zc_guid == crgetuid(cr)) 1267 return (0); 1268 } else if (zc->zc_objset_type == ZFS_PROP_GROUPUSED || 1269 zc->zc_objset_type == ZFS_PROP_GROUPQUOTA || 1270 zc->zc_objset_type == ZFS_PROP_GROUPOBJUSED || 1271 zc->zc_objset_type == ZFS_PROP_GROUPOBJQUOTA) { 1272 if (groupmember(zc->zc_guid, cr)) 1273 return (0); 1274 } 1275 /* else is for project quota/used */ 1276 } 1277 1278 return (zfs_secpolicy_write_perms(zc->zc_name, 1279 userquota_perms[zc->zc_objset_type], cr)); 1280 } 1281 1282 static int 1283 zfs_secpolicy_userspace_many(zfs_cmd_t *zc, nvlist_t *innvl, cred_t *cr) 1284 { 1285 int err = zfs_secpolicy_read(zc, innvl, cr); 1286 if (err) 1287 return (err); 1288 1289 if (zc->zc_objset_type >= ZFS_NUM_USERQUOTA_PROPS) 1290 return (SET_ERROR(EINVAL)); 1291 1292 return (zfs_secpolicy_write_perms(zc->zc_name, 1293 userquota_perms[zc->zc_objset_type], cr)); 1294 } 1295 1296 /* ARGSUSED */ 1297 static int 1298 zfs_secpolicy_userspace_upgrade(zfs_cmd_t *zc, nvlist_t *innvl, cred_t *cr) 1299 { 1300 return (zfs_secpolicy_setprop(zc->zc_name, ZFS_PROP_VERSION, 1301 NULL, cr)); 1302 } 1303 1304 /* ARGSUSED */ 1305 static int 1306 zfs_secpolicy_hold(zfs_cmd_t *zc, nvlist_t *innvl, cred_t *cr) 1307 { 1308 nvpair_t *pair; 1309 nvlist_t *holds; 1310 int error; 1311 1312 holds = fnvlist_lookup_nvlist(innvl, "holds"); 1313 1314 for (pair = nvlist_next_nvpair(holds, NULL); pair != NULL; 1315 pair = nvlist_next_nvpair(holds, pair)) { 1316 char fsname[ZFS_MAX_DATASET_NAME_LEN]; 1317 error = dmu_fsname(nvpair_name(pair), fsname); 1318 if (error != 0) 1319 return (error); 1320 error = zfs_secpolicy_write_perms(fsname, 1321 ZFS_DELEG_PERM_HOLD, cr); 1322 if (error != 0) 1323 return (error); 1324 } 1325 return (0); 1326 } 1327 1328 /* ARGSUSED */ 1329 static int 1330 zfs_secpolicy_release(zfs_cmd_t *zc, nvlist_t *innvl, cred_t *cr) 1331 { 1332 nvpair_t *pair; 1333 int error; 1334 1335 for (pair = nvlist_next_nvpair(innvl, NULL); pair != NULL; 1336 pair = nvlist_next_nvpair(innvl, pair)) { 1337 char fsname[ZFS_MAX_DATASET_NAME_LEN]; 1338 error = dmu_fsname(nvpair_name(pair), fsname); 1339 if (error != 0) 1340 return (error); 1341 error = zfs_secpolicy_write_perms(fsname, 1342 ZFS_DELEG_PERM_RELEASE, cr); 1343 if (error != 0) 1344 return (error); 1345 } 1346 return (0); 1347 } 1348 1349 /* ARGSUSED */ 1350 static int 1351 zfs_secpolicy_load_key(zfs_cmd_t *zc, nvlist_t *innvl, cred_t *cr) 1352 { 1353 return (zfs_secpolicy_write_perms(zc->zc_name, 1354 ZFS_DELEG_PERM_LOAD_KEY, cr)); 1355 } 1356 1357 /* ARGSUSED */ 1358 static int 1359 zfs_secpolicy_change_key(zfs_cmd_t *zc, nvlist_t *innvl, cred_t *cr) 1360 { 1361 return (zfs_secpolicy_write_perms(zc->zc_name, 1362 ZFS_DELEG_PERM_CHANGE_KEY, cr)); 1363 } 1364 1365 /* 1366 * Policy for allowing temporary snapshots to be taken or released 1367 */ 1368 static int 1369 zfs_secpolicy_tmp_snapshot(zfs_cmd_t *zc, nvlist_t *innvl, cred_t *cr) 1370 { 1371 /* 1372 * A temporary snapshot is the same as a snapshot, 1373 * hold, destroy and release all rolled into one. 1374 * Delegated diff alone is sufficient that we allow this. 1375 */ 1376 int error; 1377 1378 if ((error = zfs_secpolicy_write_perms(zc->zc_name, 1379 ZFS_DELEG_PERM_DIFF, cr)) == 0) 1380 return (0); 1381 1382 error = zfs_secpolicy_snapshot_perms(zc->zc_name, cr); 1383 1384 if (innvl != NULL) { 1385 if (error == 0) 1386 error = zfs_secpolicy_hold(zc, innvl, cr); 1387 if (error == 0) 1388 error = zfs_secpolicy_release(zc, innvl, cr); 1389 if (error == 0) 1390 error = zfs_secpolicy_destroy(zc, innvl, cr); 1391 } 1392 return (error); 1393 } 1394 1395 /* 1396 * Returns the nvlist as specified by the user in the zfs_cmd_t. 1397 */ 1398 static int 1399 get_nvlist(uint64_t nvl, uint64_t size, int iflag, nvlist_t **nvp) 1400 { 1401 char *packed; 1402 int error; 1403 nvlist_t *list = NULL; 1404 1405 /* 1406 * Read in and unpack the user-supplied nvlist. 1407 */ 1408 if (size == 0) 1409 return (SET_ERROR(EINVAL)); 1410 1411 packed = kmem_alloc(size, KM_SLEEP); 1412 1413 if ((error = ddi_copyin((void *)(uintptr_t)nvl, packed, size, 1414 iflag)) != 0) { 1415 kmem_free(packed, size); 1416 return (SET_ERROR(EFAULT)); 1417 } 1418 1419 if ((error = nvlist_unpack(packed, size, &list, 0)) != 0) { 1420 kmem_free(packed, size); 1421 return (error); 1422 } 1423 1424 kmem_free(packed, size); 1425 1426 *nvp = list; 1427 return (0); 1428 } 1429 1430 /* 1431 * Reduce the size of this nvlist until it can be serialized in 'max' bytes. 1432 * Entries will be removed from the end of the nvlist, and one int32 entry 1433 * named "N_MORE_ERRORS" will be added indicating how many entries were 1434 * removed. 1435 */ 1436 static int 1437 nvlist_smush(nvlist_t *errors, size_t max) 1438 { 1439 size_t size; 1440 1441 size = fnvlist_size(errors); 1442 1443 if (size > max) { 1444 nvpair_t *more_errors; 1445 int n = 0; 1446 1447 if (max < 1024) 1448 return (SET_ERROR(ENOMEM)); 1449 1450 fnvlist_add_int32(errors, ZPROP_N_MORE_ERRORS, 0); 1451 more_errors = nvlist_prev_nvpair(errors, NULL); 1452 1453 do { 1454 nvpair_t *pair = nvlist_prev_nvpair(errors, 1455 more_errors); 1456 fnvlist_remove_nvpair(errors, pair); 1457 n++; 1458 size = fnvlist_size(errors); 1459 } while (size > max); 1460 1461 fnvlist_remove_nvpair(errors, more_errors); 1462 fnvlist_add_int32(errors, ZPROP_N_MORE_ERRORS, n); 1463 ASSERT3U(fnvlist_size(errors), <=, max); 1464 } 1465 1466 return (0); 1467 } 1468 1469 static int 1470 put_nvlist(zfs_cmd_t *zc, nvlist_t *nvl) 1471 { 1472 char *packed = NULL; 1473 int error = 0; 1474 size_t size; 1475 1476 size = fnvlist_size(nvl); 1477 1478 if (size > zc->zc_nvlist_dst_size) { 1479 error = SET_ERROR(ENOMEM); 1480 } else { 1481 packed = fnvlist_pack(nvl, &size); 1482 if (ddi_copyout(packed, (void *)(uintptr_t)zc->zc_nvlist_dst, 1483 size, zc->zc_iflags) != 0) 1484 error = SET_ERROR(EFAULT); 1485 fnvlist_pack_free(packed, size); 1486 } 1487 1488 zc->zc_nvlist_dst_size = size; 1489 zc->zc_nvlist_dst_filled = B_TRUE; 1490 return (error); 1491 } 1492 1493 int 1494 getzfsvfs_impl(objset_t *os, zfsvfs_t **zfvp) 1495 { 1496 int error = 0; 1497 if (dmu_objset_type(os) != DMU_OST_ZFS) { 1498 return (SET_ERROR(EINVAL)); 1499 } 1500 1501 mutex_enter(&os->os_user_ptr_lock); 1502 *zfvp = dmu_objset_get_user(os); 1503 if (*zfvp) { 1504 VFS_HOLD((*zfvp)->z_vfs); 1505 } else { 1506 error = SET_ERROR(ESRCH); 1507 } 1508 mutex_exit(&os->os_user_ptr_lock); 1509 return (error); 1510 } 1511 1512 int 1513 getzfsvfs(const char *dsname, zfsvfs_t **zfvp) 1514 { 1515 objset_t *os; 1516 int error; 1517 1518 error = dmu_objset_hold(dsname, FTAG, &os); 1519 if (error != 0) 1520 return (error); 1521 1522 error = getzfsvfs_impl(os, zfvp); 1523 dmu_objset_rele(os, FTAG); 1524 return (error); 1525 } 1526 1527 /* 1528 * Find a zfsvfs_t for a mounted filesystem, or create our own, in which 1529 * case its z_vfs will be NULL, and it will be opened as the owner. 1530 * If 'writer' is set, the z_teardown_lock will be held for RW_WRITER, 1531 * which prevents all vnode ops from running. 1532 */ 1533 static int 1534 zfsvfs_hold(const char *name, void *tag, zfsvfs_t **zfvp, boolean_t writer) 1535 { 1536 int error = 0; 1537 1538 if (getzfsvfs(name, zfvp) != 0) 1539 error = zfsvfs_create(name, B_FALSE, zfvp); 1540 if (error == 0) { 1541 rrm_enter(&(*zfvp)->z_teardown_lock, (writer) ? RW_WRITER : 1542 RW_READER, tag); 1543 if ((*zfvp)->z_unmounted) { 1544 /* 1545 * XXX we could probably try again, since the unmounting 1546 * thread should be just about to disassociate the 1547 * objset from the zfsvfs. 1548 */ 1549 rrm_exit(&(*zfvp)->z_teardown_lock, tag); 1550 return (SET_ERROR(EBUSY)); 1551 } 1552 } 1553 return (error); 1554 } 1555 1556 static void 1557 zfsvfs_rele(zfsvfs_t *zfsvfs, void *tag) 1558 { 1559 rrm_exit(&zfsvfs->z_teardown_lock, tag); 1560 1561 if (zfsvfs->z_vfs) { 1562 VFS_RELE(zfsvfs->z_vfs); 1563 } else { 1564 dmu_objset_disown(zfsvfs->z_os, B_TRUE, zfsvfs); 1565 zfsvfs_free(zfsvfs); 1566 } 1567 } 1568 1569 static int 1570 zfs_ioc_pool_create(zfs_cmd_t *zc) 1571 { 1572 int error; 1573 nvlist_t *config, *props = NULL; 1574 nvlist_t *rootprops = NULL; 1575 nvlist_t *zplprops = NULL; 1576 char *spa_name = zc->zc_name; 1577 dsl_crypto_params_t *dcp = NULL; 1578 1579 if (error = get_nvlist(zc->zc_nvlist_conf, zc->zc_nvlist_conf_size, 1580 zc->zc_iflags, &config)) 1581 return (error); 1582 1583 if (zc->zc_nvlist_src_size != 0 && (error = 1584 get_nvlist(zc->zc_nvlist_src, zc->zc_nvlist_src_size, 1585 zc->zc_iflags, &props))) { 1586 nvlist_free(config); 1587 return (error); 1588 } 1589 1590 if (props) { 1591 nvlist_t *nvl = NULL; 1592 nvlist_t *hidden_args = NULL; 1593 uint64_t version = SPA_VERSION; 1594 char *tname; 1595 1596 (void) nvlist_lookup_uint64(props, 1597 zpool_prop_to_name(ZPOOL_PROP_VERSION), &version); 1598 if (!SPA_VERSION_IS_SUPPORTED(version)) { 1599 error = SET_ERROR(EINVAL); 1600 goto pool_props_bad; 1601 } 1602 (void) nvlist_lookup_nvlist(props, ZPOOL_ROOTFS_PROPS, &nvl); 1603 if (nvl) { 1604 error = nvlist_dup(nvl, &rootprops, KM_SLEEP); 1605 if (error != 0) { 1606 nvlist_free(config); 1607 nvlist_free(props); 1608 return (error); 1609 } 1610 (void) nvlist_remove_all(props, ZPOOL_ROOTFS_PROPS); 1611 } 1612 1613 (void) nvlist_lookup_nvlist(props, ZPOOL_HIDDEN_ARGS, 1614 &hidden_args); 1615 error = dsl_crypto_params_create_nvlist(DCP_CMD_NONE, 1616 rootprops, hidden_args, &dcp); 1617 if (error != 0) { 1618 nvlist_free(config); 1619 nvlist_free(props); 1620 return (error); 1621 } 1622 (void) nvlist_remove_all(props, ZPOOL_HIDDEN_ARGS); 1623 1624 VERIFY(nvlist_alloc(&zplprops, NV_UNIQUE_NAME, KM_SLEEP) == 0); 1625 error = zfs_fill_zplprops_root(version, rootprops, 1626 zplprops, NULL); 1627 if (error != 0) 1628 goto pool_props_bad; 1629 1630 if (nvlist_lookup_string(props, 1631 zpool_prop_to_name(ZPOOL_PROP_TNAME), &tname) == 0) 1632 spa_name = tname; 1633 } 1634 1635 error = spa_create(zc->zc_name, config, props, zplprops, dcp); 1636 1637 /* 1638 * Set the remaining root properties 1639 */ 1640 if (!error && (error = zfs_set_prop_nvlist(spa_name, 1641 ZPROP_SRC_LOCAL, rootprops, NULL)) != 0) 1642 (void) spa_destroy(spa_name); 1643 1644 pool_props_bad: 1645 nvlist_free(rootprops); 1646 nvlist_free(zplprops); 1647 nvlist_free(config); 1648 nvlist_free(props); 1649 dsl_crypto_params_free(dcp, !!error); 1650 1651 return (error); 1652 } 1653 1654 static int 1655 zfs_ioc_pool_destroy(zfs_cmd_t *zc) 1656 { 1657 int error; 1658 zfs_log_history(zc); 1659 error = spa_destroy(zc->zc_name); 1660 if (error == 0) 1661 zvol_remove_minors(zc->zc_name); 1662 return (error); 1663 } 1664 1665 static int 1666 zfs_ioc_pool_import(zfs_cmd_t *zc) 1667 { 1668 nvlist_t *config, *props = NULL; 1669 uint64_t guid; 1670 int error; 1671 1672 if ((error = get_nvlist(zc->zc_nvlist_conf, zc->zc_nvlist_conf_size, 1673 zc->zc_iflags, &config)) != 0) 1674 return (error); 1675 1676 if (zc->zc_nvlist_src_size != 0 && (error = 1677 get_nvlist(zc->zc_nvlist_src, zc->zc_nvlist_src_size, 1678 zc->zc_iflags, &props))) { 1679 nvlist_free(config); 1680 return (error); 1681 } 1682 1683 if (nvlist_lookup_uint64(config, ZPOOL_CONFIG_POOL_GUID, &guid) != 0 || 1684 guid != zc->zc_guid) 1685 error = SET_ERROR(EINVAL); 1686 else 1687 error = spa_import(zc->zc_name, config, props, zc->zc_cookie); 1688 1689 if (zc->zc_nvlist_dst != 0) { 1690 int err; 1691 1692 if ((err = put_nvlist(zc, config)) != 0) 1693 error = err; 1694 } 1695 1696 nvlist_free(config); 1697 1698 nvlist_free(props); 1699 1700 return (error); 1701 } 1702 1703 static int 1704 zfs_ioc_pool_export(zfs_cmd_t *zc) 1705 { 1706 int error; 1707 boolean_t force = (boolean_t)zc->zc_cookie; 1708 boolean_t hardforce = (boolean_t)zc->zc_guid; 1709 1710 zfs_log_history(zc); 1711 error = spa_export(zc->zc_name, NULL, force, hardforce); 1712 if (error == 0) 1713 zvol_remove_minors(zc->zc_name); 1714 return (error); 1715 } 1716 1717 static int 1718 zfs_ioc_pool_configs(zfs_cmd_t *zc) 1719 { 1720 nvlist_t *configs; 1721 int error; 1722 1723 if ((configs = spa_all_configs(&zc->zc_cookie)) == NULL) 1724 return (SET_ERROR(EEXIST)); 1725 1726 error = put_nvlist(zc, configs); 1727 1728 nvlist_free(configs); 1729 1730 return (error); 1731 } 1732 1733 /* 1734 * inputs: 1735 * zc_name name of the pool 1736 * 1737 * outputs: 1738 * zc_cookie real errno 1739 * zc_nvlist_dst config nvlist 1740 * zc_nvlist_dst_size size of config nvlist 1741 */ 1742 static int 1743 zfs_ioc_pool_stats(zfs_cmd_t *zc) 1744 { 1745 nvlist_t *config; 1746 int error; 1747 int ret = 0; 1748 1749 error = spa_get_stats(zc->zc_name, &config, zc->zc_value, 1750 sizeof (zc->zc_value)); 1751 1752 if (config != NULL) { 1753 ret = put_nvlist(zc, config); 1754 nvlist_free(config); 1755 1756 /* 1757 * The config may be present even if 'error' is non-zero. 1758 * In this case we return success, and preserve the real errno 1759 * in 'zc_cookie'. 1760 */ 1761 zc->zc_cookie = error; 1762 } else { 1763 ret = error; 1764 } 1765 1766 return (ret); 1767 } 1768 1769 /* 1770 * Try to import the given pool, returning pool stats as appropriate so that 1771 * user land knows which devices are available and overall pool health. 1772 */ 1773 static int 1774 zfs_ioc_pool_tryimport(zfs_cmd_t *zc) 1775 { 1776 nvlist_t *tryconfig, *config; 1777 int error; 1778 1779 if ((error = get_nvlist(zc->zc_nvlist_conf, zc->zc_nvlist_conf_size, 1780 zc->zc_iflags, &tryconfig)) != 0) 1781 return (error); 1782 1783 config = spa_tryimport(tryconfig); 1784 1785 nvlist_free(tryconfig); 1786 1787 if (config == NULL) 1788 return (SET_ERROR(EINVAL)); 1789 1790 error = put_nvlist(zc, config); 1791 nvlist_free(config); 1792 1793 return (error); 1794 } 1795 1796 /* 1797 * inputs: 1798 * zc_name name of the pool 1799 * zc_cookie scan func (pool_scan_func_t) 1800 * zc_flags scrub pause/resume flag (pool_scrub_cmd_t) 1801 */ 1802 static int 1803 zfs_ioc_pool_scan(zfs_cmd_t *zc) 1804 { 1805 spa_t *spa; 1806 int error; 1807 1808 if ((error = spa_open(zc->zc_name, &spa, FTAG)) != 0) 1809 return (error); 1810 1811 if (zc->zc_flags >= POOL_SCRUB_FLAGS_END) 1812 return (SET_ERROR(EINVAL)); 1813 1814 if (zc->zc_flags == POOL_SCRUB_PAUSE) 1815 error = spa_scrub_pause_resume(spa, POOL_SCRUB_PAUSE); 1816 else if (zc->zc_cookie == POOL_SCAN_NONE) 1817 error = spa_scan_stop(spa); 1818 else 1819 error = spa_scan(spa, zc->zc_cookie); 1820 1821 spa_close(spa, FTAG); 1822 1823 return (error); 1824 } 1825 1826 static int 1827 zfs_ioc_pool_freeze(zfs_cmd_t *zc) 1828 { 1829 spa_t *spa; 1830 int error; 1831 1832 error = spa_open(zc->zc_name, &spa, FTAG); 1833 if (error == 0) { 1834 spa_freeze(spa); 1835 spa_close(spa, FTAG); 1836 } 1837 return (error); 1838 } 1839 1840 static int 1841 zfs_ioc_pool_upgrade(zfs_cmd_t *zc) 1842 { 1843 spa_t *spa; 1844 int error; 1845 1846 if ((error = spa_open(zc->zc_name, &spa, FTAG)) != 0) 1847 return (error); 1848 1849 if (zc->zc_cookie < spa_version(spa) || 1850 !SPA_VERSION_IS_SUPPORTED(zc->zc_cookie)) { 1851 spa_close(spa, FTAG); 1852 return (SET_ERROR(EINVAL)); 1853 } 1854 1855 spa_upgrade(spa, zc->zc_cookie); 1856 spa_close(spa, FTAG); 1857 1858 return (error); 1859 } 1860 1861 static int 1862 zfs_ioc_pool_get_history(zfs_cmd_t *zc) 1863 { 1864 spa_t *spa; 1865 char *hist_buf; 1866 uint64_t size; 1867 int error; 1868 1869 if ((size = zc->zc_history_len) == 0) 1870 return (SET_ERROR(EINVAL)); 1871 1872 if ((error = spa_open(zc->zc_name, &spa, FTAG)) != 0) 1873 return (error); 1874 1875 if (spa_version(spa) < SPA_VERSION_ZPOOL_HISTORY) { 1876 spa_close(spa, FTAG); 1877 return (SET_ERROR(ENOTSUP)); 1878 } 1879 1880 hist_buf = kmem_alloc(size, KM_SLEEP); 1881 if ((error = spa_history_get(spa, &zc->zc_history_offset, 1882 &zc->zc_history_len, hist_buf)) == 0) { 1883 error = ddi_copyout(hist_buf, 1884 (void *)(uintptr_t)zc->zc_history, 1885 zc->zc_history_len, zc->zc_iflags); 1886 } 1887 1888 spa_close(spa, FTAG); 1889 kmem_free(hist_buf, size); 1890 return (error); 1891 } 1892 1893 static int 1894 zfs_ioc_pool_reguid(zfs_cmd_t *zc) 1895 { 1896 spa_t *spa; 1897 int error; 1898 1899 error = spa_open(zc->zc_name, &spa, FTAG); 1900 if (error == 0) { 1901 error = spa_change_guid(spa); 1902 spa_close(spa, FTAG); 1903 } 1904 return (error); 1905 } 1906 1907 static int 1908 zfs_ioc_dsobj_to_dsname(zfs_cmd_t *zc) 1909 { 1910 return (dsl_dsobj_to_dsname(zc->zc_name, zc->zc_obj, zc->zc_value)); 1911 } 1912 1913 /* 1914 * inputs: 1915 * zc_name name of filesystem 1916 * zc_obj object to find 1917 * 1918 * outputs: 1919 * zc_value name of object 1920 */ 1921 static int 1922 zfs_ioc_obj_to_path(zfs_cmd_t *zc) 1923 { 1924 objset_t *os; 1925 int error; 1926 1927 /* XXX reading from objset not owned */ 1928 if ((error = dmu_objset_hold_flags(zc->zc_name, B_TRUE, 1929 FTAG, &os)) != 0) 1930 return (error); 1931 if (dmu_objset_type(os) != DMU_OST_ZFS) { 1932 dmu_objset_rele_flags(os, B_TRUE, FTAG); 1933 return (SET_ERROR(EINVAL)); 1934 } 1935 error = zfs_obj_to_path(os, zc->zc_obj, zc->zc_value, 1936 sizeof (zc->zc_value)); 1937 dmu_objset_rele_flags(os, B_TRUE, FTAG); 1938 1939 return (error); 1940 } 1941 1942 /* 1943 * inputs: 1944 * zc_name name of filesystem 1945 * zc_obj object to find 1946 * 1947 * outputs: 1948 * zc_stat stats on object 1949 * zc_value path to object 1950 */ 1951 static int 1952 zfs_ioc_obj_to_stats(zfs_cmd_t *zc) 1953 { 1954 objset_t *os; 1955 int error; 1956 1957 /* XXX reading from objset not owned */ 1958 if ((error = dmu_objset_hold_flags(zc->zc_name, B_TRUE, 1959 FTAG, &os)) != 0) 1960 return (error); 1961 if (dmu_objset_type(os) != DMU_OST_ZFS) { 1962 dmu_objset_rele_flags(os, B_TRUE, FTAG); 1963 return (SET_ERROR(EINVAL)); 1964 } 1965 error = zfs_obj_to_stats(os, zc->zc_obj, &zc->zc_stat, zc->zc_value, 1966 sizeof (zc->zc_value)); 1967 dmu_objset_rele_flags(os, B_TRUE, FTAG); 1968 1969 return (error); 1970 } 1971 1972 static int 1973 zfs_ioc_vdev_add(zfs_cmd_t *zc) 1974 { 1975 spa_t *spa; 1976 int error; 1977 nvlist_t *config; 1978 1979 error = spa_open(zc->zc_name, &spa, FTAG); 1980 if (error != 0) 1981 return (error); 1982 1983 error = get_nvlist(zc->zc_nvlist_conf, zc->zc_nvlist_conf_size, 1984 zc->zc_iflags, &config); 1985 1986 if (error == 0) { 1987 error = spa_vdev_add(spa, config); 1988 nvlist_free(config); 1989 } 1990 spa_close(spa, FTAG); 1991 return (error); 1992 } 1993 1994 /* 1995 * inputs: 1996 * zc_name name of the pool 1997 * zc_guid guid of vdev to remove 1998 * zc_cookie cancel removal 1999 */ 2000 static int 2001 zfs_ioc_vdev_remove(zfs_cmd_t *zc) 2002 { 2003 spa_t *spa; 2004 int error; 2005 2006 error = spa_open(zc->zc_name, &spa, FTAG); 2007 if (error != 0) 2008 return (error); 2009 if (zc->zc_cookie != 0) { 2010 error = spa_vdev_remove_cancel(spa); 2011 } else { 2012 error = spa_vdev_remove(spa, zc->zc_guid, B_FALSE); 2013 } 2014 spa_close(spa, FTAG); 2015 return (error); 2016 } 2017 2018 static int 2019 zfs_ioc_vdev_set_state(zfs_cmd_t *zc) 2020 { 2021 spa_t *spa; 2022 int error; 2023 vdev_state_t newstate = VDEV_STATE_UNKNOWN; 2024 2025 if ((error = spa_open(zc->zc_name, &spa, FTAG)) != 0) 2026 return (error); 2027 switch (zc->zc_cookie) { 2028 case VDEV_STATE_ONLINE: 2029 error = vdev_online(spa, zc->zc_guid, zc->zc_obj, &newstate); 2030 break; 2031 2032 case VDEV_STATE_OFFLINE: 2033 error = vdev_offline(spa, zc->zc_guid, zc->zc_obj); 2034 break; 2035 2036 case VDEV_STATE_FAULTED: 2037 if (zc->zc_obj != VDEV_AUX_ERR_EXCEEDED && 2038 zc->zc_obj != VDEV_AUX_EXTERNAL) 2039 zc->zc_obj = VDEV_AUX_ERR_EXCEEDED; 2040 2041 error = vdev_fault(spa, zc->zc_guid, zc->zc_obj); 2042 break; 2043 2044 case VDEV_STATE_DEGRADED: 2045 if (zc->zc_obj != VDEV_AUX_ERR_EXCEEDED && 2046 zc->zc_obj != VDEV_AUX_EXTERNAL) 2047 zc->zc_obj = VDEV_AUX_ERR_EXCEEDED; 2048 2049 error = vdev_degrade(spa, zc->zc_guid, zc->zc_obj); 2050 break; 2051 2052 default: 2053 error = SET_ERROR(EINVAL); 2054 } 2055 zc->zc_cookie = newstate; 2056 spa_close(spa, FTAG); 2057 return (error); 2058 } 2059 2060 static int 2061 zfs_ioc_vdev_attach(zfs_cmd_t *zc) 2062 { 2063 spa_t *spa; 2064 int replacing = zc->zc_cookie; 2065 nvlist_t *config; 2066 int error; 2067 2068 if ((error = spa_open(zc->zc_name, &spa, FTAG)) != 0) 2069 return (error); 2070 2071 if ((error = get_nvlist(zc->zc_nvlist_conf, zc->zc_nvlist_conf_size, 2072 zc->zc_iflags, &config)) == 0) { 2073 error = spa_vdev_attach(spa, zc->zc_guid, config, replacing); 2074 nvlist_free(config); 2075 } 2076 2077 spa_close(spa, FTAG); 2078 return (error); 2079 } 2080 2081 static int 2082 zfs_ioc_vdev_detach(zfs_cmd_t *zc) 2083 { 2084 spa_t *spa; 2085 int error; 2086 2087 if ((error = spa_open(zc->zc_name, &spa, FTAG)) != 0) 2088 return (error); 2089 2090 error = spa_vdev_detach(spa, zc->zc_guid, 0, B_FALSE); 2091 2092 spa_close(spa, FTAG); 2093 return (error); 2094 } 2095 2096 static int 2097 zfs_ioc_vdev_split(zfs_cmd_t *zc) 2098 { 2099 spa_t *spa; 2100 nvlist_t *config, *props = NULL; 2101 int error; 2102 boolean_t exp = !!(zc->zc_cookie & ZPOOL_EXPORT_AFTER_SPLIT); 2103 2104 if ((error = spa_open(zc->zc_name, &spa, FTAG)) != 0) 2105 return (error); 2106 2107 if (error = get_nvlist(zc->zc_nvlist_conf, zc->zc_nvlist_conf_size, 2108 zc->zc_iflags, &config)) { 2109 spa_close(spa, FTAG); 2110 return (error); 2111 } 2112 2113 if (zc->zc_nvlist_src_size != 0 && (error = 2114 get_nvlist(zc->zc_nvlist_src, zc->zc_nvlist_src_size, 2115 zc->zc_iflags, &props))) { 2116 spa_close(spa, FTAG); 2117 nvlist_free(config); 2118 return (error); 2119 } 2120 2121 error = spa_vdev_split_mirror(spa, zc->zc_string, config, props, exp); 2122 2123 spa_close(spa, FTAG); 2124 2125 nvlist_free(config); 2126 nvlist_free(props); 2127 2128 return (error); 2129 } 2130 2131 static int 2132 zfs_ioc_vdev_setpath(zfs_cmd_t *zc) 2133 { 2134 spa_t *spa; 2135 char *path = zc->zc_value; 2136 uint64_t guid = zc->zc_guid; 2137 int error; 2138 2139 error = spa_open(zc->zc_name, &spa, FTAG); 2140 if (error != 0) 2141 return (error); 2142 2143 error = spa_vdev_setpath(spa, guid, path); 2144 spa_close(spa, FTAG); 2145 return (error); 2146 } 2147 2148 static int 2149 zfs_ioc_vdev_setfru(zfs_cmd_t *zc) 2150 { 2151 spa_t *spa; 2152 char *fru = zc->zc_value; 2153 uint64_t guid = zc->zc_guid; 2154 int error; 2155 2156 error = spa_open(zc->zc_name, &spa, FTAG); 2157 if (error != 0) 2158 return (error); 2159 2160 error = spa_vdev_setfru(spa, guid, fru); 2161 spa_close(spa, FTAG); 2162 return (error); 2163 } 2164 2165 static int 2166 zfs_ioc_objset_stats_impl(zfs_cmd_t *zc, objset_t *os) 2167 { 2168 int error = 0; 2169 nvlist_t *nv; 2170 2171 dmu_objset_fast_stat(os, &zc->zc_objset_stats); 2172 2173 if (zc->zc_nvlist_dst != 0 && 2174 (error = dsl_prop_get_all(os, &nv)) == 0) { 2175 dmu_objset_stats(os, nv); 2176 /* 2177 * NB: zvol_get_stats() will read the objset contents, 2178 * which we aren't supposed to do with a 2179 * DS_MODE_USER hold, because it could be 2180 * inconsistent. So this is a bit of a workaround... 2181 * XXX reading with out owning 2182 */ 2183 if (!zc->zc_objset_stats.dds_inconsistent && 2184 dmu_objset_type(os) == DMU_OST_ZVOL) { 2185 error = zvol_get_stats(os, nv); 2186 if (error == EIO) 2187 return (error); 2188 VERIFY0(error); 2189 } 2190 error = put_nvlist(zc, nv); 2191 nvlist_free(nv); 2192 } 2193 2194 return (error); 2195 } 2196 2197 /* 2198 * inputs: 2199 * zc_name name of filesystem 2200 * zc_nvlist_dst_size size of buffer for property nvlist 2201 * 2202 * outputs: 2203 * zc_objset_stats stats 2204 * zc_nvlist_dst property nvlist 2205 * zc_nvlist_dst_size size of property nvlist 2206 */ 2207 static int 2208 zfs_ioc_objset_stats(zfs_cmd_t *zc) 2209 { 2210 objset_t *os; 2211 int error; 2212 2213 error = dmu_objset_hold(zc->zc_name, FTAG, &os); 2214 if (error == 0) { 2215 error = zfs_ioc_objset_stats_impl(zc, os); 2216 dmu_objset_rele(os, FTAG); 2217 } 2218 2219 return (error); 2220 } 2221 2222 /* 2223 * inputs: 2224 * zc_name name of filesystem 2225 * zc_nvlist_dst_size size of buffer for property nvlist 2226 * 2227 * outputs: 2228 * zc_nvlist_dst received property nvlist 2229 * zc_nvlist_dst_size size of received property nvlist 2230 * 2231 * Gets received properties (distinct from local properties on or after 2232 * SPA_VERSION_RECVD_PROPS) for callers who want to differentiate received from 2233 * local property values. 2234 */ 2235 static int 2236 zfs_ioc_objset_recvd_props(zfs_cmd_t *zc) 2237 { 2238 int error = 0; 2239 nvlist_t *nv; 2240 2241 /* 2242 * Without this check, we would return local property values if the 2243 * caller has not already received properties on or after 2244 * SPA_VERSION_RECVD_PROPS. 2245 */ 2246 if (!dsl_prop_get_hasrecvd(zc->zc_name)) 2247 return (SET_ERROR(ENOTSUP)); 2248 2249 if (zc->zc_nvlist_dst != 0 && 2250 (error = dsl_prop_get_received(zc->zc_name, &nv)) == 0) { 2251 error = put_nvlist(zc, nv); 2252 nvlist_free(nv); 2253 } 2254 2255 return (error); 2256 } 2257 2258 static int 2259 nvl_add_zplprop(objset_t *os, nvlist_t *props, zfs_prop_t prop) 2260 { 2261 uint64_t value; 2262 int error; 2263 2264 /* 2265 * zfs_get_zplprop() will either find a value or give us 2266 * the default value (if there is one). 2267 */ 2268 if ((error = zfs_get_zplprop(os, prop, &value)) != 0) 2269 return (error); 2270 VERIFY(nvlist_add_uint64(props, zfs_prop_to_name(prop), value) == 0); 2271 return (0); 2272 } 2273 2274 /* 2275 * inputs: 2276 * zc_name name of filesystem 2277 * zc_nvlist_dst_size size of buffer for zpl property nvlist 2278 * 2279 * outputs: 2280 * zc_nvlist_dst zpl property nvlist 2281 * zc_nvlist_dst_size size of zpl property nvlist 2282 */ 2283 static int 2284 zfs_ioc_objset_zplprops(zfs_cmd_t *zc) 2285 { 2286 objset_t *os; 2287 int err; 2288 2289 /* XXX reading without owning */ 2290 if (err = dmu_objset_hold(zc->zc_name, FTAG, &os)) 2291 return (err); 2292 2293 dmu_objset_fast_stat(os, &zc->zc_objset_stats); 2294 2295 /* 2296 * NB: nvl_add_zplprop() will read the objset contents, 2297 * which we aren't supposed to do with a DS_MODE_USER 2298 * hold, because it could be inconsistent. 2299 */ 2300 if (zc->zc_nvlist_dst != 0 && 2301 !zc->zc_objset_stats.dds_inconsistent && 2302 dmu_objset_type(os) == DMU_OST_ZFS) { 2303 nvlist_t *nv; 2304 2305 VERIFY(nvlist_alloc(&nv, NV_UNIQUE_NAME, KM_SLEEP) == 0); 2306 if ((err = nvl_add_zplprop(os, nv, ZFS_PROP_VERSION)) == 0 && 2307 (err = nvl_add_zplprop(os, nv, ZFS_PROP_NORMALIZE)) == 0 && 2308 (err = nvl_add_zplprop(os, nv, ZFS_PROP_UTF8ONLY)) == 0 && 2309 (err = nvl_add_zplprop(os, nv, ZFS_PROP_CASE)) == 0) 2310 err = put_nvlist(zc, nv); 2311 nvlist_free(nv); 2312 } else { 2313 err = SET_ERROR(ENOENT); 2314 } 2315 dmu_objset_rele(os, FTAG); 2316 return (err); 2317 } 2318 2319 static boolean_t 2320 dataset_name_hidden(const char *name) 2321 { 2322 /* 2323 * Skip over datasets that are not visible in this zone, 2324 * internal datasets (which have a $ in their name), and 2325 * temporary datasets (which have a % in their name). 2326 */ 2327 if (strchr(name, '$') != NULL) 2328 return (B_TRUE); 2329 if (strchr(name, '%') != NULL) 2330 return (B_TRUE); 2331 if (!INGLOBALZONE(curproc) && !zone_dataset_visible(name, NULL)) 2332 return (B_TRUE); 2333 return (B_FALSE); 2334 } 2335 2336 /* 2337 * inputs: 2338 * zc_name name of filesystem 2339 * zc_cookie zap cursor 2340 * zc_nvlist_dst_size size of buffer for property nvlist 2341 * 2342 * outputs: 2343 * zc_name name of next filesystem 2344 * zc_cookie zap cursor 2345 * zc_objset_stats stats 2346 * zc_nvlist_dst property nvlist 2347 * zc_nvlist_dst_size size of property nvlist 2348 */ 2349 static int 2350 zfs_ioc_dataset_list_next(zfs_cmd_t *zc) 2351 { 2352 objset_t *os; 2353 int error; 2354 char *p; 2355 size_t orig_len = strlen(zc->zc_name); 2356 2357 top: 2358 if (error = dmu_objset_hold(zc->zc_name, FTAG, &os)) { 2359 if (error == ENOENT) 2360 error = SET_ERROR(ESRCH); 2361 return (error); 2362 } 2363 2364 p = strrchr(zc->zc_name, '/'); 2365 if (p == NULL || p[1] != '\0') 2366 (void) strlcat(zc->zc_name, "/", sizeof (zc->zc_name)); 2367 p = zc->zc_name + strlen(zc->zc_name); 2368 2369 do { 2370 error = dmu_dir_list_next(os, 2371 sizeof (zc->zc_name) - (p - zc->zc_name), p, 2372 NULL, &zc->zc_cookie); 2373 if (error == ENOENT) 2374 error = SET_ERROR(ESRCH); 2375 } while (error == 0 && dataset_name_hidden(zc->zc_name)); 2376 dmu_objset_rele(os, FTAG); 2377 2378 /* 2379 * If it's an internal dataset (ie. with a '$' in its name), 2380 * don't try to get stats for it, otherwise we'll return ENOENT. 2381 */ 2382 if (error == 0 && strchr(zc->zc_name, '$') == NULL) { 2383 error = zfs_ioc_objset_stats(zc); /* fill in the stats */ 2384 if (error == ENOENT) { 2385 /* We lost a race with destroy, get the next one. */ 2386 zc->zc_name[orig_len] = '\0'; 2387 goto top; 2388 } 2389 } 2390 return (error); 2391 } 2392 2393 /* 2394 * inputs: 2395 * zc_name name of filesystem 2396 * zc_cookie zap cursor 2397 * zc_nvlist_dst_size size of buffer for property nvlist 2398 * zc_simple when set, only name is requested 2399 * 2400 * outputs: 2401 * zc_name name of next snapshot 2402 * zc_objset_stats stats 2403 * zc_nvlist_dst property nvlist 2404 * zc_nvlist_dst_size size of property nvlist 2405 */ 2406 static int 2407 zfs_ioc_snapshot_list_next(zfs_cmd_t *zc) 2408 { 2409 objset_t *os; 2410 int error; 2411 2412 error = dmu_objset_hold(zc->zc_name, FTAG, &os); 2413 if (error != 0) { 2414 return (error == ENOENT ? ESRCH : error); 2415 } 2416 2417 /* 2418 * A dataset name of maximum length cannot have any snapshots, 2419 * so exit immediately. 2420 */ 2421 if (strlcat(zc->zc_name, "@", sizeof (zc->zc_name)) >= 2422 ZFS_MAX_DATASET_NAME_LEN) { 2423 dmu_objset_rele(os, FTAG); 2424 return (SET_ERROR(ESRCH)); 2425 } 2426 2427 error = dmu_snapshot_list_next(os, 2428 sizeof (zc->zc_name) - strlen(zc->zc_name), 2429 zc->zc_name + strlen(zc->zc_name), &zc->zc_obj, &zc->zc_cookie, 2430 NULL); 2431 2432 if (error == 0 && !zc->zc_simple) { 2433 dsl_dataset_t *ds; 2434 dsl_pool_t *dp = os->os_dsl_dataset->ds_dir->dd_pool; 2435 2436 error = dsl_dataset_hold_obj(dp, zc->zc_obj, FTAG, &ds); 2437 if (error == 0) { 2438 objset_t *ossnap; 2439 2440 error = dmu_objset_from_ds(ds, &ossnap); 2441 if (error == 0) 2442 error = zfs_ioc_objset_stats_impl(zc, ossnap); 2443 dsl_dataset_rele(ds, FTAG); 2444 } 2445 } else if (error == ENOENT) { 2446 error = SET_ERROR(ESRCH); 2447 } 2448 2449 dmu_objset_rele(os, FTAG); 2450 /* if we failed, undo the @ that we tacked on to zc_name */ 2451 if (error != 0) 2452 *strchr(zc->zc_name, '@') = '\0'; 2453 return (error); 2454 } 2455 2456 static int 2457 zfs_prop_set_userquota(const char *dsname, nvpair_t *pair) 2458 { 2459 const char *propname = nvpair_name(pair); 2460 uint64_t *valary; 2461 unsigned int vallen; 2462 const char *domain; 2463 char *dash; 2464 zfs_userquota_prop_t type; 2465 uint64_t rid; 2466 uint64_t quota; 2467 zfsvfs_t *zfsvfs; 2468 int err; 2469 2470 if (nvpair_type(pair) == DATA_TYPE_NVLIST) { 2471 nvlist_t *attrs; 2472 VERIFY(nvpair_value_nvlist(pair, &attrs) == 0); 2473 if (nvlist_lookup_nvpair(attrs, ZPROP_VALUE, 2474 &pair) != 0) 2475 return (SET_ERROR(EINVAL)); 2476 } 2477 2478 /* 2479 * A correctly constructed propname is encoded as 2480 * userquota@<rid>-<domain>. 2481 */ 2482 if ((dash = strchr(propname, '-')) == NULL || 2483 nvpair_value_uint64_array(pair, &valary, &vallen) != 0 || 2484 vallen != 3) 2485 return (SET_ERROR(EINVAL)); 2486 2487 domain = dash + 1; 2488 type = valary[0]; 2489 rid = valary[1]; 2490 quota = valary[2]; 2491 2492 err = zfsvfs_hold(dsname, FTAG, &zfsvfs, B_FALSE); 2493 if (err == 0) { 2494 err = zfs_set_userquota(zfsvfs, type, domain, rid, quota); 2495 zfsvfs_rele(zfsvfs, FTAG); 2496 } 2497 2498 return (err); 2499 } 2500 2501 /* 2502 * If the named property is one that has a special function to set its value, 2503 * return 0 on success and a positive error code on failure; otherwise if it is 2504 * not one of the special properties handled by this function, return -1. 2505 * 2506 * XXX: It would be better for callers of the property interface if we handled 2507 * these special cases in dsl_prop.c (in the dsl layer). 2508 */ 2509 static int 2510 zfs_prop_set_special(const char *dsname, zprop_source_t source, 2511 nvpair_t *pair) 2512 { 2513 const char *propname = nvpair_name(pair); 2514 zfs_prop_t prop = zfs_name_to_prop(propname); 2515 uint64_t intval = 0; 2516 char *strval = NULL; 2517 int err = -1; 2518 2519 if (prop == ZPROP_INVAL) { 2520 if (zfs_prop_userquota(propname)) 2521 return (zfs_prop_set_userquota(dsname, pair)); 2522 return (-1); 2523 } 2524 2525 if (nvpair_type(pair) == DATA_TYPE_NVLIST) { 2526 nvlist_t *attrs; 2527 VERIFY(nvpair_value_nvlist(pair, &attrs) == 0); 2528 VERIFY(nvlist_lookup_nvpair(attrs, ZPROP_VALUE, 2529 &pair) == 0); 2530 } 2531 2532 /* all special properties are numeric except for keylocation */ 2533 if (zfs_prop_get_type(prop) == PROP_TYPE_STRING) { 2534 strval = fnvpair_value_string(pair); 2535 } else { 2536 intval = fnvpair_value_uint64(pair); 2537 } 2538 2539 switch (prop) { 2540 case ZFS_PROP_QUOTA: 2541 err = dsl_dir_set_quota(dsname, source, intval); 2542 break; 2543 case ZFS_PROP_REFQUOTA: 2544 err = dsl_dataset_set_refquota(dsname, source, intval); 2545 break; 2546 case ZFS_PROP_FILESYSTEM_LIMIT: 2547 case ZFS_PROP_SNAPSHOT_LIMIT: 2548 if (intval == UINT64_MAX) { 2549 /* clearing the limit, just do it */ 2550 err = 0; 2551 } else { 2552 err = dsl_dir_activate_fs_ss_limit(dsname); 2553 } 2554 /* 2555 * Set err to -1 to force the zfs_set_prop_nvlist code down the 2556 * default path to set the value in the nvlist. 2557 */ 2558 if (err == 0) 2559 err = -1; 2560 break; 2561 case ZFS_PROP_KEYLOCATION: 2562 err = dsl_crypto_can_set_keylocation(dsname, strval); 2563 2564 /* 2565 * Set err to -1 to force the zfs_set_prop_nvlist code down the 2566 * default path to set the value in the nvlist. 2567 */ 2568 if (err == 0) 2569 err = -1; 2570 break; 2571 case ZFS_PROP_RESERVATION: 2572 err = dsl_dir_set_reservation(dsname, source, intval); 2573 break; 2574 case ZFS_PROP_REFRESERVATION: 2575 err = dsl_dataset_set_refreservation(dsname, source, intval); 2576 break; 2577 case ZFS_PROP_VOLSIZE: 2578 err = zvol_set_volsize(dsname, intval); 2579 break; 2580 case ZFS_PROP_VERSION: 2581 { 2582 zfsvfs_t *zfsvfs; 2583 2584 if ((err = zfsvfs_hold(dsname, FTAG, &zfsvfs, B_TRUE)) != 0) 2585 break; 2586 2587 err = zfs_set_version(zfsvfs, intval); 2588 zfsvfs_rele(zfsvfs, FTAG); 2589 2590 if (err == 0 && intval >= ZPL_VERSION_USERSPACE) { 2591 zfs_cmd_t *zc; 2592 2593 zc = kmem_zalloc(sizeof (zfs_cmd_t), KM_SLEEP); 2594 (void) strcpy(zc->zc_name, dsname); 2595 (void) zfs_ioc_userspace_upgrade(zc); 2596 (void) zfs_ioc_id_quota_upgrade(zc); 2597 kmem_free(zc, sizeof (zfs_cmd_t)); 2598 } 2599 break; 2600 } 2601 default: 2602 err = -1; 2603 } 2604 2605 return (err); 2606 } 2607 2608 /* 2609 * This function is best effort. If it fails to set any of the given properties, 2610 * it continues to set as many as it can and returns the last error 2611 * encountered. If the caller provides a non-NULL errlist, it will be filled in 2612 * with the list of names of all the properties that failed along with the 2613 * corresponding error numbers. 2614 * 2615 * If every property is set successfully, zero is returned and errlist is not 2616 * modified. 2617 */ 2618 int 2619 zfs_set_prop_nvlist(const char *dsname, zprop_source_t source, nvlist_t *nvl, 2620 nvlist_t *errlist) 2621 { 2622 nvpair_t *pair; 2623 nvpair_t *propval; 2624 int rv = 0; 2625 uint64_t intval; 2626 char *strval; 2627 nvlist_t *genericnvl = fnvlist_alloc(); 2628 nvlist_t *retrynvl = fnvlist_alloc(); 2629 2630 retry: 2631 pair = NULL; 2632 while ((pair = nvlist_next_nvpair(nvl, pair)) != NULL) { 2633 const char *propname = nvpair_name(pair); 2634 zfs_prop_t prop = zfs_name_to_prop(propname); 2635 int err = 0; 2636 2637 /* decode the property value */ 2638 propval = pair; 2639 if (nvpair_type(pair) == DATA_TYPE_NVLIST) { 2640 nvlist_t *attrs; 2641 attrs = fnvpair_value_nvlist(pair); 2642 if (nvlist_lookup_nvpair(attrs, ZPROP_VALUE, 2643 &propval) != 0) 2644 err = SET_ERROR(EINVAL); 2645 } 2646 2647 /* Validate value type */ 2648 if (err == 0 && source == ZPROP_SRC_INHERITED) { 2649 /* inherited properties are expected to be booleans */ 2650 if (nvpair_type(propval) != DATA_TYPE_BOOLEAN) 2651 err = SET_ERROR(EINVAL); 2652 } else if (err == 0 && prop == ZPROP_INVAL) { 2653 if (zfs_prop_user(propname)) { 2654 if (nvpair_type(propval) != DATA_TYPE_STRING) 2655 err = SET_ERROR(EINVAL); 2656 } else if (zfs_prop_userquota(propname)) { 2657 if (nvpair_type(propval) != 2658 DATA_TYPE_UINT64_ARRAY) 2659 err = SET_ERROR(EINVAL); 2660 } else { 2661 err = SET_ERROR(EINVAL); 2662 } 2663 } else if (err == 0) { 2664 if (nvpair_type(propval) == DATA_TYPE_STRING) { 2665 if (zfs_prop_get_type(prop) != PROP_TYPE_STRING) 2666 err = SET_ERROR(EINVAL); 2667 } else if (nvpair_type(propval) == DATA_TYPE_UINT64) { 2668 const char *unused; 2669 2670 intval = fnvpair_value_uint64(propval); 2671 2672 switch (zfs_prop_get_type(prop)) { 2673 case PROP_TYPE_NUMBER: 2674 break; 2675 case PROP_TYPE_STRING: 2676 err = SET_ERROR(EINVAL); 2677 break; 2678 case PROP_TYPE_INDEX: 2679 if (zfs_prop_index_to_string(prop, 2680 intval, &unused) != 0) 2681 err = SET_ERROR(EINVAL); 2682 break; 2683 default: 2684 cmn_err(CE_PANIC, 2685 "unknown property type"); 2686 } 2687 } else { 2688 err = SET_ERROR(EINVAL); 2689 } 2690 } 2691 2692 /* Validate permissions */ 2693 if (err == 0) 2694 err = zfs_check_settable(dsname, pair, CRED()); 2695 2696 if (err == 0) { 2697 if (source == ZPROP_SRC_INHERITED) 2698 err = -1; /* does not need special handling */ 2699 else 2700 err = zfs_prop_set_special(dsname, source, 2701 pair); 2702 if (err == -1) { 2703 /* 2704 * For better performance we build up a list of 2705 * properties to set in a single transaction. 2706 */ 2707 err = nvlist_add_nvpair(genericnvl, pair); 2708 } else if (err != 0 && nvl != retrynvl) { 2709 /* 2710 * This may be a spurious error caused by 2711 * receiving quota and reservation out of order. 2712 * Try again in a second pass. 2713 */ 2714 err = nvlist_add_nvpair(retrynvl, pair); 2715 } 2716 } 2717 2718 if (err != 0) { 2719 if (errlist != NULL) 2720 fnvlist_add_int32(errlist, propname, err); 2721 rv = err; 2722 } 2723 } 2724 2725 if (nvl != retrynvl && !nvlist_empty(retrynvl)) { 2726 nvl = retrynvl; 2727 goto retry; 2728 } 2729 2730 if (!nvlist_empty(genericnvl) && 2731 dsl_props_set(dsname, source, genericnvl) != 0) { 2732 /* 2733 * If this fails, we still want to set as many properties as we 2734 * can, so try setting them individually. 2735 */ 2736 pair = NULL; 2737 while ((pair = nvlist_next_nvpair(genericnvl, pair)) != NULL) { 2738 const char *propname = nvpair_name(pair); 2739 int err = 0; 2740 2741 propval = pair; 2742 if (nvpair_type(pair) == DATA_TYPE_NVLIST) { 2743 nvlist_t *attrs; 2744 attrs = fnvpair_value_nvlist(pair); 2745 propval = fnvlist_lookup_nvpair(attrs, 2746 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, 2755 source); 2756 } else { 2757 intval = fnvpair_value_uint64(propval); 2758 err = dsl_prop_set_int(dsname, propname, source, 2759 intval); 2760 } 2761 2762 if (err != 0) { 2763 if (errlist != NULL) { 2764 fnvlist_add_int32(errlist, propname, 2765 err); 2766 } 2767 rv = err; 2768 } 2769 } 2770 } 2771 nvlist_free(genericnvl); 2772 nvlist_free(retrynvl); 2773 2774 return (rv); 2775 } 2776 2777 /* 2778 * Check that all the properties are valid user properties. 2779 */ 2780 static int 2781 zfs_check_userprops(const char *fsname, nvlist_t *nvl) 2782 { 2783 nvpair_t *pair = NULL; 2784 int error = 0; 2785 2786 while ((pair = nvlist_next_nvpair(nvl, pair)) != NULL) { 2787 const char *propname = nvpair_name(pair); 2788 2789 if (!zfs_prop_user(propname) || 2790 nvpair_type(pair) != DATA_TYPE_STRING) 2791 return (SET_ERROR(EINVAL)); 2792 2793 if (error = zfs_secpolicy_write_perms(fsname, 2794 ZFS_DELEG_PERM_USERPROP, CRED())) 2795 return (error); 2796 2797 if (strlen(propname) >= ZAP_MAXNAMELEN) 2798 return (SET_ERROR(ENAMETOOLONG)); 2799 2800 if (strlen(fnvpair_value_string(pair)) >= ZAP_MAXVALUELEN) 2801 return (E2BIG); 2802 } 2803 return (0); 2804 } 2805 2806 static void 2807 props_skip(nvlist_t *props, nvlist_t *skipped, nvlist_t **newprops) 2808 { 2809 nvpair_t *pair; 2810 2811 VERIFY(nvlist_alloc(newprops, NV_UNIQUE_NAME, KM_SLEEP) == 0); 2812 2813 pair = NULL; 2814 while ((pair = nvlist_next_nvpair(props, pair)) != NULL) { 2815 if (nvlist_exists(skipped, nvpair_name(pair))) 2816 continue; 2817 2818 VERIFY(nvlist_add_nvpair(*newprops, pair) == 0); 2819 } 2820 } 2821 2822 static int 2823 clear_received_props(const char *dsname, nvlist_t *props, 2824 nvlist_t *skipped) 2825 { 2826 int err = 0; 2827 nvlist_t *cleared_props = NULL; 2828 props_skip(props, skipped, &cleared_props); 2829 if (!nvlist_empty(cleared_props)) { 2830 /* 2831 * Acts on local properties until the dataset has received 2832 * properties at least once on or after SPA_VERSION_RECVD_PROPS. 2833 */ 2834 zprop_source_t flags = (ZPROP_SRC_NONE | 2835 (dsl_prop_get_hasrecvd(dsname) ? ZPROP_SRC_RECEIVED : 0)); 2836 err = zfs_set_prop_nvlist(dsname, flags, cleared_props, NULL); 2837 } 2838 nvlist_free(cleared_props); 2839 return (err); 2840 } 2841 2842 /* 2843 * inputs: 2844 * zc_name name of filesystem 2845 * zc_value name of property to set 2846 * zc_nvlist_src{_size} nvlist of properties to apply 2847 * zc_cookie received properties flag 2848 * 2849 * outputs: 2850 * zc_nvlist_dst{_size} error for each unapplied received property 2851 */ 2852 static int 2853 zfs_ioc_set_prop(zfs_cmd_t *zc) 2854 { 2855 nvlist_t *nvl; 2856 boolean_t received = zc->zc_cookie; 2857 zprop_source_t source = (received ? ZPROP_SRC_RECEIVED : 2858 ZPROP_SRC_LOCAL); 2859 nvlist_t *errors; 2860 int error; 2861 2862 if ((error = get_nvlist(zc->zc_nvlist_src, zc->zc_nvlist_src_size, 2863 zc->zc_iflags, &nvl)) != 0) 2864 return (error); 2865 2866 if (received) { 2867 nvlist_t *origprops; 2868 2869 if (dsl_prop_get_received(zc->zc_name, &origprops) == 0) { 2870 (void) clear_received_props(zc->zc_name, 2871 origprops, nvl); 2872 nvlist_free(origprops); 2873 } 2874 2875 error = dsl_prop_set_hasrecvd(zc->zc_name); 2876 } 2877 2878 errors = fnvlist_alloc(); 2879 if (error == 0) 2880 error = zfs_set_prop_nvlist(zc->zc_name, source, nvl, errors); 2881 2882 if (zc->zc_nvlist_dst != 0 && errors != NULL) { 2883 (void) put_nvlist(zc, errors); 2884 } 2885 2886 nvlist_free(errors); 2887 nvlist_free(nvl); 2888 return (error); 2889 } 2890 2891 /* 2892 * inputs: 2893 * zc_name name of filesystem 2894 * zc_value name of property to inherit 2895 * zc_cookie revert to received value if TRUE 2896 * 2897 * outputs: none 2898 */ 2899 static int 2900 zfs_ioc_inherit_prop(zfs_cmd_t *zc) 2901 { 2902 const char *propname = zc->zc_value; 2903 zfs_prop_t prop = zfs_name_to_prop(propname); 2904 boolean_t received = zc->zc_cookie; 2905 zprop_source_t source = (received 2906 ? ZPROP_SRC_NONE /* revert to received value, if any */ 2907 : ZPROP_SRC_INHERITED); /* explicitly inherit */ 2908 2909 if (received) { 2910 nvlist_t *dummy; 2911 nvpair_t *pair; 2912 zprop_type_t type; 2913 int err; 2914 2915 /* 2916 * zfs_prop_set_special() expects properties in the form of an 2917 * nvpair with type info. 2918 */ 2919 if (prop == ZPROP_INVAL) { 2920 if (!zfs_prop_user(propname)) 2921 return (SET_ERROR(EINVAL)); 2922 2923 type = PROP_TYPE_STRING; 2924 } else if (prop == ZFS_PROP_VOLSIZE || 2925 prop == ZFS_PROP_VERSION) { 2926 return (SET_ERROR(EINVAL)); 2927 } else { 2928 type = zfs_prop_get_type(prop); 2929 } 2930 2931 VERIFY(nvlist_alloc(&dummy, NV_UNIQUE_NAME, KM_SLEEP) == 0); 2932 2933 switch (type) { 2934 case PROP_TYPE_STRING: 2935 VERIFY(0 == nvlist_add_string(dummy, propname, "")); 2936 break; 2937 case PROP_TYPE_NUMBER: 2938 case PROP_TYPE_INDEX: 2939 VERIFY(0 == nvlist_add_uint64(dummy, propname, 0)); 2940 break; 2941 default: 2942 nvlist_free(dummy); 2943 return (SET_ERROR(EINVAL)); 2944 } 2945 2946 pair = nvlist_next_nvpair(dummy, NULL); 2947 err = zfs_prop_set_special(zc->zc_name, source, pair); 2948 nvlist_free(dummy); 2949 if (err != -1) 2950 return (err); /* special property already handled */ 2951 } else { 2952 /* 2953 * Only check this in the non-received case. We want to allow 2954 * 'inherit -S' to revert non-inheritable properties like quota 2955 * and reservation to the received or default values even though 2956 * they are not considered inheritable. 2957 */ 2958 if (prop != ZPROP_INVAL && !zfs_prop_inheritable(prop)) 2959 return (SET_ERROR(EINVAL)); 2960 } 2961 2962 /* property name has been validated by zfs_secpolicy_inherit_prop() */ 2963 return (dsl_prop_inherit(zc->zc_name, zc->zc_value, source)); 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); 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 * inputs: 3044 * zc_name name of filesystem 3045 * zc_nvlist_src{_size} nvlist of delegated permissions 3046 * zc_perm_action allow/unallow flag 3047 * 3048 * outputs: none 3049 */ 3050 static int 3051 zfs_ioc_set_fsacl(zfs_cmd_t *zc) 3052 { 3053 int error; 3054 nvlist_t *fsaclnv = NULL; 3055 3056 if ((error = get_nvlist(zc->zc_nvlist_src, zc->zc_nvlist_src_size, 3057 zc->zc_iflags, &fsaclnv)) != 0) 3058 return (error); 3059 3060 /* 3061 * Verify nvlist is constructed correctly 3062 */ 3063 if ((error = zfs_deleg_verify_nvlist(fsaclnv)) != 0) { 3064 nvlist_free(fsaclnv); 3065 return (SET_ERROR(EINVAL)); 3066 } 3067 3068 /* 3069 * If we don't have PRIV_SYS_MOUNT, then validate 3070 * that user is allowed to hand out each permission in 3071 * the nvlist(s) 3072 */ 3073 3074 error = secpolicy_zfs(CRED()); 3075 if (error != 0) { 3076 if (zc->zc_perm_action == B_FALSE) { 3077 error = dsl_deleg_can_allow(zc->zc_name, 3078 fsaclnv, CRED()); 3079 } else { 3080 error = dsl_deleg_can_unallow(zc->zc_name, 3081 fsaclnv, CRED()); 3082 } 3083 } 3084 3085 if (error == 0) 3086 error = dsl_deleg_set(zc->zc_name, fsaclnv, zc->zc_perm_action); 3087 3088 nvlist_free(fsaclnv); 3089 return (error); 3090 } 3091 3092 /* 3093 * inputs: 3094 * zc_name name of filesystem 3095 * 3096 * outputs: 3097 * zc_nvlist_src{_size} nvlist of delegated permissions 3098 */ 3099 static int 3100 zfs_ioc_get_fsacl(zfs_cmd_t *zc) 3101 { 3102 nvlist_t *nvp; 3103 int error; 3104 3105 if ((error = dsl_deleg_get(zc->zc_name, &nvp)) == 0) { 3106 error = put_nvlist(zc, nvp); 3107 nvlist_free(nvp); 3108 } 3109 3110 return (error); 3111 } 3112 3113 /* ARGSUSED */ 3114 static void 3115 zfs_create_cb(objset_t *os, void *arg, cred_t *cr, dmu_tx_t *tx) 3116 { 3117 zfs_creat_t *zct = arg; 3118 3119 zfs_create_fs(os, cr, zct->zct_zplprops, tx); 3120 } 3121 3122 #define ZFS_PROP_UNDEFINED ((uint64_t)-1) 3123 3124 /* 3125 * inputs: 3126 * os parent objset pointer (NULL if root fs) 3127 * fuids_ok fuids allowed in this version of the spa? 3128 * sa_ok SAs allowed in this version of the spa? 3129 * createprops list of properties requested by creator 3130 * 3131 * outputs: 3132 * zplprops values for the zplprops we attach to the master node object 3133 * is_ci true if requested file system will be purely case-insensitive 3134 * 3135 * Determine the settings for utf8only, normalization and 3136 * casesensitivity. Specific values may have been requested by the 3137 * creator and/or we can inherit values from the parent dataset. If 3138 * the file system is of too early a vintage, a creator can not 3139 * request settings for these properties, even if the requested 3140 * setting is the default value. We don't actually want to create dsl 3141 * properties for these, so remove them from the source nvlist after 3142 * processing. 3143 */ 3144 static int 3145 zfs_fill_zplprops_impl(objset_t *os, uint64_t zplver, 3146 boolean_t fuids_ok, boolean_t sa_ok, nvlist_t *createprops, 3147 nvlist_t *zplprops, boolean_t *is_ci) 3148 { 3149 uint64_t sense = ZFS_PROP_UNDEFINED; 3150 uint64_t norm = ZFS_PROP_UNDEFINED; 3151 uint64_t u8 = ZFS_PROP_UNDEFINED; 3152 3153 ASSERT(zplprops != NULL); 3154 3155 if (os != NULL && os->os_phys->os_type != DMU_OST_ZFS) 3156 return (SET_ERROR(EINVAL)); 3157 3158 /* 3159 * Pull out creator prop choices, if any. 3160 */ 3161 if (createprops) { 3162 (void) nvlist_lookup_uint64(createprops, 3163 zfs_prop_to_name(ZFS_PROP_VERSION), &zplver); 3164 (void) nvlist_lookup_uint64(createprops, 3165 zfs_prop_to_name(ZFS_PROP_NORMALIZE), &norm); 3166 (void) nvlist_remove_all(createprops, 3167 zfs_prop_to_name(ZFS_PROP_NORMALIZE)); 3168 (void) nvlist_lookup_uint64(createprops, 3169 zfs_prop_to_name(ZFS_PROP_UTF8ONLY), &u8); 3170 (void) nvlist_remove_all(createprops, 3171 zfs_prop_to_name(ZFS_PROP_UTF8ONLY)); 3172 (void) nvlist_lookup_uint64(createprops, 3173 zfs_prop_to_name(ZFS_PROP_CASE), &sense); 3174 (void) nvlist_remove_all(createprops, 3175 zfs_prop_to_name(ZFS_PROP_CASE)); 3176 } 3177 3178 /* 3179 * If the zpl version requested is whacky or the file system 3180 * or pool is version is too "young" to support normalization 3181 * and the creator tried to set a value for one of the props, 3182 * error out. 3183 */ 3184 if ((zplver < ZPL_VERSION_INITIAL || zplver > ZPL_VERSION) || 3185 (zplver >= ZPL_VERSION_FUID && !fuids_ok) || 3186 (zplver >= ZPL_VERSION_SA && !sa_ok) || 3187 (zplver < ZPL_VERSION_NORMALIZATION && 3188 (norm != ZFS_PROP_UNDEFINED || u8 != ZFS_PROP_UNDEFINED || 3189 sense != ZFS_PROP_UNDEFINED))) 3190 return (SET_ERROR(ENOTSUP)); 3191 3192 /* 3193 * Put the version in the zplprops 3194 */ 3195 VERIFY(nvlist_add_uint64(zplprops, 3196 zfs_prop_to_name(ZFS_PROP_VERSION), zplver) == 0); 3197 3198 if (norm == ZFS_PROP_UNDEFINED) 3199 VERIFY(zfs_get_zplprop(os, ZFS_PROP_NORMALIZE, &norm) == 0); 3200 VERIFY(nvlist_add_uint64(zplprops, 3201 zfs_prop_to_name(ZFS_PROP_NORMALIZE), norm) == 0); 3202 3203 /* 3204 * If we're normalizing, names must always be valid UTF-8 strings. 3205 */ 3206 if (norm) 3207 u8 = 1; 3208 if (u8 == ZFS_PROP_UNDEFINED) 3209 VERIFY(zfs_get_zplprop(os, ZFS_PROP_UTF8ONLY, &u8) == 0); 3210 VERIFY(nvlist_add_uint64(zplprops, 3211 zfs_prop_to_name(ZFS_PROP_UTF8ONLY), u8) == 0); 3212 3213 if (sense == ZFS_PROP_UNDEFINED) 3214 VERIFY(zfs_get_zplprop(os, ZFS_PROP_CASE, &sense) == 0); 3215 VERIFY(nvlist_add_uint64(zplprops, 3216 zfs_prop_to_name(ZFS_PROP_CASE), sense) == 0); 3217 3218 if (is_ci) 3219 *is_ci = (sense == ZFS_CASE_INSENSITIVE); 3220 3221 return (0); 3222 } 3223 3224 static int 3225 zfs_fill_zplprops(const char *dataset, nvlist_t *createprops, 3226 nvlist_t *zplprops, boolean_t *is_ci) 3227 { 3228 boolean_t fuids_ok, sa_ok; 3229 uint64_t zplver = ZPL_VERSION; 3230 objset_t *os = NULL; 3231 char parentname[ZFS_MAX_DATASET_NAME_LEN]; 3232 char *cp; 3233 spa_t *spa; 3234 uint64_t spa_vers; 3235 int error; 3236 3237 (void) strlcpy(parentname, dataset, sizeof (parentname)); 3238 cp = strrchr(parentname, '/'); 3239 ASSERT(cp != NULL); 3240 cp[0] = '\0'; 3241 3242 if ((error = spa_open(dataset, &spa, FTAG)) != 0) 3243 return (error); 3244 3245 spa_vers = spa_version(spa); 3246 spa_close(spa, FTAG); 3247 3248 zplver = zfs_zpl_version_map(spa_vers); 3249 fuids_ok = (zplver >= ZPL_VERSION_FUID); 3250 sa_ok = (zplver >= ZPL_VERSION_SA); 3251 3252 /* 3253 * Open parent object set so we can inherit zplprop values. 3254 */ 3255 if ((error = dmu_objset_hold(parentname, FTAG, &os)) != 0) 3256 return (error); 3257 3258 error = zfs_fill_zplprops_impl(os, zplver, fuids_ok, sa_ok, createprops, 3259 zplprops, is_ci); 3260 dmu_objset_rele(os, FTAG); 3261 return (error); 3262 } 3263 3264 static int 3265 zfs_fill_zplprops_root(uint64_t spa_vers, nvlist_t *createprops, 3266 nvlist_t *zplprops, boolean_t *is_ci) 3267 { 3268 boolean_t fuids_ok; 3269 boolean_t sa_ok; 3270 uint64_t zplver = ZPL_VERSION; 3271 int error; 3272 3273 zplver = zfs_zpl_version_map(spa_vers); 3274 fuids_ok = (zplver >= ZPL_VERSION_FUID); 3275 sa_ok = (zplver >= ZPL_VERSION_SA); 3276 3277 error = zfs_fill_zplprops_impl(NULL, zplver, fuids_ok, sa_ok, 3278 createprops, zplprops, is_ci); 3279 return (error); 3280 } 3281 3282 /* 3283 * innvl: { 3284 * "type" -> dmu_objset_type_t (int32) 3285 * (optional) "props" -> { prop -> value } 3286 * (optional) "hidden_args" -> { "wkeydata" -> value } 3287 * raw uint8_t array of encryption wrapping key data (32 bytes) 3288 * } 3289 * 3290 * outnvl: propname -> error code (int32) 3291 */ 3292 3293 static const zfs_ioc_key_t zfs_keys_create[] = { 3294 {"type", DATA_TYPE_INT32, 0}, 3295 {"props", DATA_TYPE_NVLIST, ZK_OPTIONAL}, 3296 {"hidden_args", DATA_TYPE_NVLIST, ZK_OPTIONAL}, 3297 }; 3298 3299 static int 3300 zfs_ioc_create(const char *fsname, nvlist_t *innvl, nvlist_t *outnvl) 3301 { 3302 int error = 0; 3303 zfs_creat_t zct = { 0 }; 3304 nvlist_t *nvprops = NULL; 3305 nvlist_t *hidden_args = NULL; 3306 void (*cbfunc)(objset_t *os, void *arg, cred_t *cr, dmu_tx_t *tx); 3307 dmu_objset_type_t type; 3308 boolean_t is_insensitive = B_FALSE; 3309 dsl_crypto_params_t *dcp = NULL; 3310 3311 type = (dmu_objset_type_t)fnvlist_lookup_int32(innvl, "type"); 3312 (void) nvlist_lookup_nvlist(innvl, "props", &nvprops); 3313 (void) nvlist_lookup_nvlist(innvl, ZPOOL_HIDDEN_ARGS, &hidden_args); 3314 3315 switch (type) { 3316 case DMU_OST_ZFS: 3317 cbfunc = zfs_create_cb; 3318 break; 3319 3320 case DMU_OST_ZVOL: 3321 cbfunc = zvol_create_cb; 3322 break; 3323 3324 default: 3325 cbfunc = NULL; 3326 break; 3327 } 3328 if (strchr(fsname, '@') || 3329 strchr(fsname, '%')) 3330 return (SET_ERROR(EINVAL)); 3331 3332 zct.zct_props = nvprops; 3333 3334 if (cbfunc == NULL) 3335 return (SET_ERROR(EINVAL)); 3336 3337 if (type == DMU_OST_ZVOL) { 3338 uint64_t volsize, volblocksize; 3339 3340 if (nvprops == NULL) 3341 return (SET_ERROR(EINVAL)); 3342 if (nvlist_lookup_uint64(nvprops, 3343 zfs_prop_to_name(ZFS_PROP_VOLSIZE), &volsize) != 0) 3344 return (SET_ERROR(EINVAL)); 3345 3346 if ((error = nvlist_lookup_uint64(nvprops, 3347 zfs_prop_to_name(ZFS_PROP_VOLBLOCKSIZE), 3348 &volblocksize)) != 0 && error != ENOENT) 3349 return (SET_ERROR(EINVAL)); 3350 3351 if (error != 0) 3352 volblocksize = zfs_prop_default_numeric( 3353 ZFS_PROP_VOLBLOCKSIZE); 3354 3355 if ((error = zvol_check_volblocksize( 3356 volblocksize)) != 0 || 3357 (error = zvol_check_volsize(volsize, 3358 volblocksize)) != 0) 3359 return (error); 3360 } else if (type == DMU_OST_ZFS) { 3361 int error; 3362 3363 /* 3364 * We have to have normalization and 3365 * case-folding flags correct when we do the 3366 * file system creation, so go figure them out 3367 * now. 3368 */ 3369 VERIFY(nvlist_alloc(&zct.zct_zplprops, 3370 NV_UNIQUE_NAME, KM_SLEEP) == 0); 3371 error = zfs_fill_zplprops(fsname, nvprops, 3372 zct.zct_zplprops, &is_insensitive); 3373 if (error != 0) { 3374 nvlist_free(zct.zct_zplprops); 3375 return (error); 3376 } 3377 } 3378 3379 error = dsl_crypto_params_create_nvlist(DCP_CMD_NONE, nvprops, 3380 hidden_args, &dcp); 3381 if (error != 0) { 3382 nvlist_free(zct.zct_zplprops); 3383 return (error); 3384 } 3385 3386 error = dmu_objset_create(fsname, type, 3387 is_insensitive ? DS_FLAG_CI_DATASET : 0, dcp, cbfunc, &zct); 3388 3389 nvlist_free(zct.zct_zplprops); 3390 dsl_crypto_params_free(dcp, !!error); 3391 3392 /* 3393 * It would be nice to do this atomically. 3394 */ 3395 if (error == 0) { 3396 error = zfs_set_prop_nvlist(fsname, ZPROP_SRC_LOCAL, 3397 nvprops, outnvl); 3398 if (error != 0) 3399 (void) dsl_destroy_head(fsname); 3400 } 3401 return (error); 3402 } 3403 3404 /* 3405 * innvl: { 3406 * "origin" -> name of origin snapshot 3407 * (optional) "props" -> { prop -> value } 3408 * (optional) "hidden_args" -> { "wkeydata" -> value } 3409 * raw uint8_t array of encryption wrapping key data (32 bytes) 3410 * } 3411 * 3412 * outnvl: propname -> error code (int32) 3413 */ 3414 static const zfs_ioc_key_t zfs_keys_clone[] = { 3415 {"origin", DATA_TYPE_STRING, 0}, 3416 {"props", DATA_TYPE_NVLIST, ZK_OPTIONAL}, 3417 {"hidden_args", DATA_TYPE_NVLIST, ZK_OPTIONAL}, 3418 }; 3419 3420 static int 3421 zfs_ioc_clone(const char *fsname, nvlist_t *innvl, nvlist_t *outnvl) 3422 { 3423 int error = 0; 3424 nvlist_t *nvprops = NULL; 3425 char *origin_name; 3426 3427 if (nvlist_lookup_string(innvl, "origin", &origin_name) != 0) 3428 return (SET_ERROR(EINVAL)); 3429 (void) nvlist_lookup_nvlist(innvl, "props", &nvprops); 3430 3431 if (strchr(fsname, '@') || 3432 strchr(fsname, '%')) 3433 return (SET_ERROR(EINVAL)); 3434 3435 if (dataset_namecheck(origin_name, NULL, NULL) != 0) 3436 return (SET_ERROR(EINVAL)); 3437 3438 error = dmu_objset_clone(fsname, origin_name); 3439 3440 /* 3441 * It would be nice to do this atomically. 3442 */ 3443 if (error == 0) { 3444 error = zfs_set_prop_nvlist(fsname, ZPROP_SRC_LOCAL, 3445 nvprops, outnvl); 3446 if (error != 0) 3447 (void) dsl_destroy_head(fsname); 3448 } 3449 return (error); 3450 } 3451 3452 static const zfs_ioc_key_t zfs_keys_remap[] = { 3453 /* no nvl keys */ 3454 }; 3455 3456 /* ARGSUSED */ 3457 static int 3458 zfs_ioc_remap(const char *fsname, nvlist_t *innvl, nvlist_t *outnvl) 3459 { 3460 if (strchr(fsname, '@') || 3461 strchr(fsname, '%')) 3462 return (SET_ERROR(EINVAL)); 3463 3464 return (dmu_objset_remap_indirects(fsname)); 3465 } 3466 3467 /* 3468 * innvl: { 3469 * "snaps" -> { snapshot1, snapshot2 } 3470 * (optional) "props" -> { prop -> value (string) } 3471 * } 3472 * 3473 * outnvl: snapshot -> error code (int32) 3474 */ 3475 static const zfs_ioc_key_t zfs_keys_snapshot[] = { 3476 {"snaps", DATA_TYPE_NVLIST, 0}, 3477 {"props", DATA_TYPE_NVLIST, ZK_OPTIONAL}, 3478 }; 3479 3480 static int 3481 zfs_ioc_snapshot(const char *poolname, nvlist_t *innvl, nvlist_t *outnvl) 3482 { 3483 nvlist_t *snaps; 3484 nvlist_t *props = NULL; 3485 int error, poollen; 3486 nvpair_t *pair; 3487 3488 (void) nvlist_lookup_nvlist(innvl, "props", &props); 3489 if ((error = zfs_check_userprops(poolname, props)) != 0) 3490 return (error); 3491 3492 if (!nvlist_empty(props) && 3493 zfs_earlier_version(poolname, SPA_VERSION_SNAP_PROPS)) 3494 return (SET_ERROR(ENOTSUP)); 3495 3496 snaps = fnvlist_lookup_nvlist(innvl, "snaps"); 3497 poollen = strlen(poolname); 3498 for (pair = nvlist_next_nvpair(snaps, NULL); pair != NULL; 3499 pair = nvlist_next_nvpair(snaps, pair)) { 3500 const char *name = nvpair_name(pair); 3501 const char *cp = strchr(name, '@'); 3502 3503 /* 3504 * The snap name must contain an @, and the part after it must 3505 * contain only valid characters. 3506 */ 3507 if (cp == NULL || 3508 zfs_component_namecheck(cp + 1, NULL, NULL) != 0) 3509 return (SET_ERROR(EINVAL)); 3510 3511 /* 3512 * The snap must be in the specified pool. 3513 */ 3514 if (strncmp(name, poolname, poollen) != 0 || 3515 (name[poollen] != '/' && name[poollen] != '@')) 3516 return (SET_ERROR(EXDEV)); 3517 3518 /* This must be the only snap of this fs. */ 3519 for (nvpair_t *pair2 = nvlist_next_nvpair(snaps, pair); 3520 pair2 != NULL; pair2 = nvlist_next_nvpair(snaps, pair2)) { 3521 if (strncmp(name, nvpair_name(pair2), cp - name + 1) 3522 == 0) { 3523 return (SET_ERROR(EXDEV)); 3524 } 3525 } 3526 } 3527 3528 error = dsl_dataset_snapshot(snaps, props, outnvl); 3529 return (error); 3530 } 3531 3532 /* 3533 * innvl: "message" -> string 3534 */ 3535 static const zfs_ioc_key_t zfs_keys_log_history[] = { 3536 {"message", DATA_TYPE_STRING, 0}, 3537 }; 3538 3539 /* ARGSUSED */ 3540 static int 3541 zfs_ioc_log_history(const char *unused, nvlist_t *innvl, nvlist_t *outnvl) 3542 { 3543 char *message; 3544 spa_t *spa; 3545 int error; 3546 char *poolname; 3547 3548 /* 3549 * The poolname in the ioctl is not set, we get it from the TSD, 3550 * which was set at the end of the last successful ioctl that allows 3551 * logging. The secpolicy func already checked that it is set. 3552 * Only one log ioctl is allowed after each successful ioctl, so 3553 * we clear the TSD here. 3554 */ 3555 poolname = tsd_get(zfs_allow_log_key); 3556 (void) tsd_set(zfs_allow_log_key, NULL); 3557 error = spa_open(poolname, &spa, FTAG); 3558 strfree(poolname); 3559 if (error != 0) 3560 return (error); 3561 3562 message = fnvlist_lookup_string(innvl, "message"); 3563 3564 if (spa_version(spa) < SPA_VERSION_ZPOOL_HISTORY) { 3565 spa_close(spa, FTAG); 3566 return (SET_ERROR(ENOTSUP)); 3567 } 3568 3569 error = spa_history_log(spa, message); 3570 spa_close(spa, FTAG); 3571 return (error); 3572 } 3573 3574 /* 3575 * This ioctl is used to set the bootenv configuration on the current 3576 * pool. This configuration is stored in the second padding area of the label, 3577 * and it is used by the bootloader(s) to store bootloader and/or system 3578 * specific data. 3579 * The data is stored as nvlist data stream, and is protected by 3580 * an embedded checksum. 3581 * The version can have two possible values: 3582 * VB_RAW: nvlist should have key GRUB_ENVMAP, value DATA_TYPE_STRING. 3583 * VB_NVLIST: nvlist with arbitrary <key, value> pairs. 3584 */ 3585 static const zfs_ioc_key_t zfs_keys_set_bootenv[] = { 3586 {"version", DATA_TYPE_UINT64, 0}, 3587 {"<keys>", DATA_TYPE_ANY, ZK_OPTIONAL | ZK_WILDCARDLIST}, 3588 }; 3589 3590 static int 3591 zfs_ioc_set_bootenv(const char *name, nvlist_t *innvl, 3592 nvlist_t *outnvl __unused) 3593 { 3594 int error; 3595 spa_t *spa; 3596 3597 if ((error = spa_open(name, &spa, FTAG)) != 0) 3598 return (error); 3599 spa_vdev_state_enter(spa, SCL_ALL); 3600 error = vdev_label_write_bootenv(spa->spa_root_vdev, innvl); 3601 (void) spa_vdev_state_exit(spa, NULL, 0); 3602 spa_close(spa, FTAG); 3603 return (error); 3604 } 3605 3606 static const zfs_ioc_key_t zfs_keys_get_bootenv[] = { 3607 /* no nvl keys */ 3608 }; 3609 3610 static int 3611 zfs_ioc_get_bootenv(const char *name, nvlist_t *innvl __unused, 3612 nvlist_t *outnvl) 3613 { 3614 spa_t *spa; 3615 int error; 3616 3617 if ((error = spa_open(name, &spa, FTAG)) != 0) 3618 return (error); 3619 spa_vdev_state_enter(spa, SCL_ALL); 3620 error = vdev_label_read_bootenv(spa->spa_root_vdev, outnvl); 3621 (void) spa_vdev_state_exit(spa, NULL, 0); 3622 spa_close(spa, FTAG); 3623 return (error); 3624 } 3625 3626 /* 3627 * The dp_config_rwlock must not be held when calling this, because the 3628 * unmount may need to write out data. 3629 * 3630 * This function is best-effort. Callers must deal gracefully if it 3631 * remains mounted (or is remounted after this call). 3632 * 3633 * Returns 0 if the argument is not a snapshot, or it is not currently a 3634 * filesystem, or we were able to unmount it. Returns error code otherwise. 3635 */ 3636 void 3637 zfs_unmount_snap(const char *snapname) 3638 { 3639 vfs_t *vfsp = NULL; 3640 zfsvfs_t *zfsvfs = NULL; 3641 3642 if (strchr(snapname, '@') == NULL) 3643 return; 3644 3645 int err = getzfsvfs(snapname, &zfsvfs); 3646 if (err != 0) { 3647 ASSERT3P(zfsvfs, ==, NULL); 3648 return; 3649 } 3650 vfsp = zfsvfs->z_vfs; 3651 3652 ASSERT(!dsl_pool_config_held(dmu_objset_pool(zfsvfs->z_os))); 3653 3654 err = vn_vfswlock(vfsp->vfs_vnodecovered); 3655 VFS_RELE(vfsp); 3656 if (err != 0) 3657 return; 3658 3659 /* 3660 * Always force the unmount for snapshots. 3661 */ 3662 (void) dounmount(vfsp, MS_FORCE, kcred); 3663 } 3664 3665 /* ARGSUSED */ 3666 static int 3667 zfs_unmount_snap_cb(const char *snapname, void *arg) 3668 { 3669 zfs_unmount_snap(snapname); 3670 return (0); 3671 } 3672 3673 /* 3674 * When a clone is destroyed, its origin may also need to be destroyed, 3675 * in which case it must be unmounted. This routine will do that unmount 3676 * if necessary. 3677 */ 3678 void 3679 zfs_destroy_unmount_origin(const char *fsname) 3680 { 3681 int error; 3682 objset_t *os; 3683 dsl_dataset_t *ds; 3684 3685 error = dmu_objset_hold(fsname, FTAG, &os); 3686 if (error != 0) 3687 return; 3688 ds = dmu_objset_ds(os); 3689 if (dsl_dir_is_clone(ds->ds_dir) && DS_IS_DEFER_DESTROY(ds->ds_prev)) { 3690 char originname[ZFS_MAX_DATASET_NAME_LEN]; 3691 dsl_dataset_name(ds->ds_prev, originname); 3692 dmu_objset_rele(os, FTAG); 3693 zfs_unmount_snap(originname); 3694 } else { 3695 dmu_objset_rele(os, FTAG); 3696 } 3697 } 3698 3699 /* 3700 * innvl: { 3701 * "snaps" -> { snapshot1, snapshot2 } 3702 * (optional boolean) "defer" 3703 * } 3704 * 3705 * outnvl: snapshot -> error code (int32) 3706 * 3707 */ 3708 static const zfs_ioc_key_t zfs_keys_destroy_snaps[] = { 3709 {"snaps", DATA_TYPE_NVLIST, 0}, 3710 {"defer", DATA_TYPE_BOOLEAN, ZK_OPTIONAL}, 3711 }; 3712 3713 /* ARGSUSED */ 3714 static int 3715 zfs_ioc_destroy_snaps(const char *poolname, nvlist_t *innvl, nvlist_t *outnvl) 3716 { 3717 nvlist_t *snaps; 3718 nvpair_t *pair; 3719 boolean_t defer; 3720 3721 if (nvlist_lookup_nvlist(innvl, "snaps", &snaps) != 0) 3722 return (SET_ERROR(EINVAL)); 3723 defer = nvlist_exists(innvl, "defer"); 3724 3725 for (pair = nvlist_next_nvpair(snaps, NULL); pair != NULL; 3726 pair = nvlist_next_nvpair(snaps, pair)) { 3727 zfs_unmount_snap(nvpair_name(pair)); 3728 } 3729 3730 return (dsl_destroy_snapshots_nvl(snaps, defer, outnvl)); 3731 } 3732 3733 /* 3734 * Create bookmarks. Bookmark names are of the form <fs>#<bmark>. 3735 * All bookmarks must be in the same pool. 3736 * 3737 * innvl: { 3738 * bookmark1 -> snapshot1, bookmark2 -> snapshot2 3739 * } 3740 * 3741 * outnvl: bookmark -> error code (int32) 3742 * 3743 */ 3744 static const zfs_ioc_key_t zfs_keys_bookmark[] = { 3745 {"<bookmark>...", DATA_TYPE_STRING, ZK_WILDCARDLIST}, 3746 }; 3747 3748 /* ARGSUSED */ 3749 static int 3750 zfs_ioc_bookmark(const char *poolname, nvlist_t *innvl, nvlist_t *outnvl) 3751 { 3752 for (nvpair_t *pair = nvlist_next_nvpair(innvl, NULL); 3753 pair != NULL; pair = nvlist_next_nvpair(innvl, pair)) { 3754 char *snap_name; 3755 3756 /* 3757 * Verify the snapshot argument. 3758 */ 3759 if (nvpair_value_string(pair, &snap_name) != 0) 3760 return (SET_ERROR(EINVAL)); 3761 3762 3763 /* Verify that the keys (bookmarks) are unique */ 3764 for (nvpair_t *pair2 = nvlist_next_nvpair(innvl, pair); 3765 pair2 != NULL; pair2 = nvlist_next_nvpair(innvl, pair2)) { 3766 if (strcmp(nvpair_name(pair), nvpair_name(pair2)) == 0) 3767 return (SET_ERROR(EINVAL)); 3768 } 3769 } 3770 3771 return (dsl_bookmark_create(innvl, outnvl)); 3772 } 3773 3774 /* 3775 * innvl: { 3776 * property 1, property 2, ... 3777 * } 3778 * 3779 * outnvl: { 3780 * bookmark name 1 -> { property 1, property 2, ... }, 3781 * bookmark name 2 -> { property 1, property 2, ... } 3782 * } 3783 * 3784 */ 3785 static const zfs_ioc_key_t zfs_keys_get_bookmarks[] = { 3786 {"<property>...", DATA_TYPE_BOOLEAN, ZK_WILDCARDLIST | ZK_OPTIONAL}, 3787 }; 3788 3789 static int 3790 zfs_ioc_get_bookmarks(const char *fsname, nvlist_t *innvl, nvlist_t *outnvl) 3791 { 3792 return (dsl_get_bookmarks(fsname, innvl, outnvl)); 3793 } 3794 3795 /* 3796 * innvl: { 3797 * bookmark name 1, bookmark name 2 3798 * } 3799 * 3800 * outnvl: bookmark -> error code (int32) 3801 * 3802 */ 3803 static const zfs_ioc_key_t zfs_keys_destroy_bookmarks[] = { 3804 {"<bookmark>...", DATA_TYPE_BOOLEAN, ZK_WILDCARDLIST}, 3805 }; 3806 3807 static int 3808 zfs_ioc_destroy_bookmarks(const char *poolname, nvlist_t *innvl, 3809 nvlist_t *outnvl) 3810 { 3811 int error, poollen; 3812 3813 poollen = strlen(poolname); 3814 for (nvpair_t *pair = nvlist_next_nvpair(innvl, NULL); 3815 pair != NULL; pair = nvlist_next_nvpair(innvl, pair)) { 3816 const char *name = nvpair_name(pair); 3817 const char *cp = strchr(name, '#'); 3818 3819 /* 3820 * The bookmark name must contain an #, and the part after it 3821 * must contain only valid characters. 3822 */ 3823 if (cp == NULL || 3824 zfs_component_namecheck(cp + 1, NULL, NULL) != 0) 3825 return (SET_ERROR(EINVAL)); 3826 3827 /* 3828 * The bookmark must be in the specified pool. 3829 */ 3830 if (strncmp(name, poolname, poollen) != 0 || 3831 (name[poollen] != '/' && name[poollen] != '#')) 3832 return (SET_ERROR(EXDEV)); 3833 } 3834 3835 error = dsl_bookmark_destroy(innvl, outnvl); 3836 return (error); 3837 } 3838 3839 static const zfs_ioc_key_t zfs_keys_channel_program[] = { 3840 {"program", DATA_TYPE_STRING, 0}, 3841 {"arg", DATA_TYPE_ANY, 0}, 3842 {"hidden_args", DATA_TYPE_ANY, ZK_OPTIONAL}, 3843 {"sync", DATA_TYPE_BOOLEAN_VALUE, ZK_OPTIONAL}, 3844 {"instrlimit", DATA_TYPE_UINT64, ZK_OPTIONAL}, 3845 {"memlimit", DATA_TYPE_UINT64, ZK_OPTIONAL}, 3846 }; 3847 3848 static int 3849 zfs_ioc_channel_program(const char *poolname, nvlist_t *innvl, 3850 nvlist_t *outnvl) 3851 { 3852 char *program; 3853 uint64_t instrlimit, memlimit; 3854 boolean_t sync_flag; 3855 nvpair_t *nvarg = NULL; 3856 nvlist_t *hidden_args = NULL; 3857 3858 program = fnvlist_lookup_string(innvl, ZCP_ARG_PROGRAM); 3859 if (0 != nvlist_lookup_boolean_value(innvl, ZCP_ARG_SYNC, &sync_flag)) { 3860 sync_flag = B_TRUE; 3861 } 3862 if (0 != nvlist_lookup_uint64(innvl, ZCP_ARG_INSTRLIMIT, &instrlimit)) { 3863 instrlimit = ZCP_DEFAULT_INSTRLIMIT; 3864 } 3865 if (0 != nvlist_lookup_uint64(innvl, ZCP_ARG_MEMLIMIT, &memlimit)) { 3866 memlimit = ZCP_DEFAULT_MEMLIMIT; 3867 } 3868 nvarg = fnvlist_lookup_nvpair(innvl, ZCP_ARG_ARGLIST); 3869 3870 /* hidden args are optional */ 3871 if (nvlist_lookup_nvlist(innvl, ZPOOL_HIDDEN_ARGS, &hidden_args) == 0) { 3872 nvlist_t *argnvl = fnvpair_value_nvlist(nvarg); 3873 int ret; 3874 3875 ret = nvlist_add_nvlist(argnvl, ZPOOL_HIDDEN_ARGS, hidden_args); 3876 if (ret != 0) 3877 return (ret); 3878 } 3879 3880 if (instrlimit == 0 || instrlimit > zfs_lua_max_instrlimit) 3881 return (EINVAL); 3882 if (memlimit == 0 || memlimit > zfs_lua_max_memlimit) 3883 return (EINVAL); 3884 3885 return (zcp_eval(poolname, program, sync_flag, instrlimit, memlimit, 3886 nvarg, outnvl)); 3887 } 3888 3889 /* 3890 * innvl: unused 3891 * outnvl: empty 3892 */ 3893 static const zfs_ioc_key_t zfs_keys_pool_checkpoint[] = { 3894 /* no nvl keys */ 3895 }; 3896 3897 /* ARGSUSED */ 3898 static int 3899 zfs_ioc_pool_checkpoint(const char *poolname, nvlist_t *innvl, nvlist_t *outnvl) 3900 { 3901 return (spa_checkpoint(poolname)); 3902 } 3903 3904 /* 3905 * innvl: unused 3906 * outnvl: empty 3907 */ 3908 static const zfs_ioc_key_t zfs_keys_pool_discard_checkpoint[] = { 3909 /* no nvl keys */ 3910 }; 3911 3912 /* ARGSUSED */ 3913 static int 3914 zfs_ioc_pool_discard_checkpoint(const char *poolname, nvlist_t *innvl, 3915 nvlist_t *outnvl) 3916 { 3917 return (spa_checkpoint_discard(poolname)); 3918 } 3919 3920 /* 3921 * inputs: 3922 * zc_name name of dataset to destroy 3923 * zc_defer_destroy mark for deferred destroy 3924 * 3925 * outputs: none 3926 */ 3927 static int 3928 zfs_ioc_destroy(zfs_cmd_t *zc) 3929 { 3930 objset_t *os; 3931 dmu_objset_type_t ost; 3932 int err; 3933 3934 err = dmu_objset_hold(zc->zc_name, FTAG, &os); 3935 if (err != 0) 3936 return (err); 3937 ost = dmu_objset_type(os); 3938 dmu_objset_rele(os, FTAG); 3939 3940 if (ost == DMU_OST_ZFS) 3941 zfs_unmount_snap(zc->zc_name); 3942 3943 if (strchr(zc->zc_name, '@')) { 3944 err = dsl_destroy_snapshot(zc->zc_name, zc->zc_defer_destroy); 3945 } else { 3946 err = dsl_destroy_head(zc->zc_name); 3947 if (err == EEXIST) { 3948 /* 3949 * It is possible that the given DS may have 3950 * hidden child (%recv) datasets - "leftovers" 3951 * resulting from the previously interrupted 3952 * 'zfs receive'. 3953 * 3954 * 6 extra bytes for /%recv 3955 */ 3956 char namebuf[ZFS_MAX_DATASET_NAME_LEN + 6]; 3957 3958 if (snprintf(namebuf, sizeof (namebuf), "%s/%s", 3959 zc->zc_name, recv_clone_name) >= 3960 sizeof (namebuf)) 3961 return (SET_ERROR(EINVAL)); 3962 3963 /* 3964 * Try to remove the hidden child (%recv) and after 3965 * that try to remove the target dataset. 3966 * If the hidden child (%recv) does not exist 3967 * the original error (EEXIST) will be returned 3968 */ 3969 err = dsl_destroy_head(namebuf); 3970 if (err == 0) 3971 err = dsl_destroy_head(zc->zc_name); 3972 else if (err == ENOENT) 3973 err = SET_ERROR(EEXIST); 3974 } 3975 } 3976 if (ost == DMU_OST_ZVOL && err == 0) 3977 (void) zvol_remove_minor(zc->zc_name); 3978 return (err); 3979 } 3980 3981 /* 3982 * innvl: { 3983 * "initialize_command" -> POOL_INITIALIZE_{CANCEL|START|SUSPEND} (uint64) 3984 * "initialize_vdevs": { -> guids to initialize (nvlist) 3985 * "vdev_path_1": vdev_guid_1, (uint64), 3986 * "vdev_path_2": vdev_guid_2, (uint64), 3987 * ... 3988 * }, 3989 * } 3990 * 3991 * outnvl: { 3992 * "initialize_vdevs": { -> initialization errors (nvlist) 3993 * "vdev_path_1": errno, see function body for possible errnos (uint64) 3994 * "vdev_path_2": errno, ... (uint64) 3995 * ... 3996 * } 3997 * } 3998 * 3999 * EINVAL is returned for an unknown command or if any of the provided vdev 4000 * guids have be specified with a type other than uint64. 4001 */ 4002 static const zfs_ioc_key_t zfs_keys_pool_initialize[] = { 4003 {ZPOOL_INITIALIZE_COMMAND, DATA_TYPE_UINT64, 0}, 4004 {ZPOOL_INITIALIZE_VDEVS, DATA_TYPE_NVLIST, 0} 4005 }; 4006 4007 static int 4008 zfs_ioc_pool_initialize(const char *poolname, nvlist_t *innvl, nvlist_t *outnvl) 4009 { 4010 uint64_t cmd_type; 4011 if (nvlist_lookup_uint64(innvl, ZPOOL_INITIALIZE_COMMAND, 4012 &cmd_type) != 0) { 4013 return (SET_ERROR(EINVAL)); 4014 } 4015 4016 if (!(cmd_type == POOL_INITIALIZE_CANCEL || 4017 cmd_type == POOL_INITIALIZE_START || 4018 cmd_type == POOL_INITIALIZE_SUSPEND)) { 4019 return (SET_ERROR(EINVAL)); 4020 } 4021 4022 nvlist_t *vdev_guids; 4023 if (nvlist_lookup_nvlist(innvl, ZPOOL_INITIALIZE_VDEVS, 4024 &vdev_guids) != 0) { 4025 return (SET_ERROR(EINVAL)); 4026 } 4027 4028 for (nvpair_t *pair = nvlist_next_nvpair(vdev_guids, NULL); 4029 pair != NULL; pair = nvlist_next_nvpair(vdev_guids, pair)) { 4030 uint64_t vdev_guid; 4031 if (nvpair_value_uint64(pair, &vdev_guid) != 0) { 4032 return (SET_ERROR(EINVAL)); 4033 } 4034 } 4035 4036 spa_t *spa; 4037 int error = spa_open(poolname, &spa, FTAG); 4038 if (error != 0) 4039 return (error); 4040 4041 nvlist_t *vdev_errlist = fnvlist_alloc(); 4042 int total_errors = spa_vdev_initialize(spa, vdev_guids, cmd_type, 4043 vdev_errlist); 4044 4045 if (fnvlist_size(vdev_errlist) > 0) { 4046 fnvlist_add_nvlist(outnvl, ZPOOL_INITIALIZE_VDEVS, 4047 vdev_errlist); 4048 } 4049 fnvlist_free(vdev_errlist); 4050 4051 spa_close(spa, FTAG); 4052 return (total_errors > 0 ? EINVAL : 0); 4053 } 4054 4055 /* 4056 * innvl: { 4057 * "trim_command" -> POOL_TRIM_{CANCEL|START|SUSPEND} (uint64) 4058 * "trim_vdevs": { -> guids to TRIM (nvlist) 4059 * "vdev_path_1": vdev_guid_1, (uint64), 4060 * "vdev_path_2": vdev_guid_2, (uint64), 4061 * ... 4062 * }, 4063 * "trim_rate" -> Target TRIM rate in bytes/sec. 4064 * "trim_secure" -> Set to request a secure TRIM. 4065 * } 4066 * 4067 * outnvl: { 4068 * "trim_vdevs": { -> TRIM errors (nvlist) 4069 * "vdev_path_1": errno, see function body for possible errnos (uint64) 4070 * "vdev_path_2": errno, ... (uint64) 4071 * ... 4072 * } 4073 * } 4074 * 4075 * EINVAL is returned for an unknown command or if any of the provided vdev 4076 * guids have be specified with a type other than uint64. 4077 */ 4078 static const zfs_ioc_key_t zfs_keys_pool_trim[] = { 4079 {ZPOOL_TRIM_COMMAND, DATA_TYPE_UINT64, 0}, 4080 {ZPOOL_TRIM_VDEVS, DATA_TYPE_NVLIST, 0}, 4081 {ZPOOL_TRIM_RATE, DATA_TYPE_UINT64, ZK_OPTIONAL}, 4082 {ZPOOL_TRIM_SECURE, DATA_TYPE_BOOLEAN_VALUE, ZK_OPTIONAL}, 4083 }; 4084 4085 static int 4086 zfs_ioc_pool_trim(const char *poolname, nvlist_t *innvl, nvlist_t *outnvl) 4087 { 4088 uint64_t cmd_type; 4089 if (nvlist_lookup_uint64(innvl, ZPOOL_TRIM_COMMAND, &cmd_type) != 0) 4090 return (SET_ERROR(EINVAL)); 4091 4092 if (!(cmd_type == POOL_TRIM_CANCEL || 4093 cmd_type == POOL_TRIM_START || 4094 cmd_type == POOL_TRIM_SUSPEND)) { 4095 return (SET_ERROR(EINVAL)); 4096 } 4097 4098 nvlist_t *vdev_guids; 4099 if (nvlist_lookup_nvlist(innvl, ZPOOL_TRIM_VDEVS, &vdev_guids) != 0) 4100 return (SET_ERROR(EINVAL)); 4101 4102 for (nvpair_t *pair = nvlist_next_nvpair(vdev_guids, NULL); 4103 pair != NULL; pair = nvlist_next_nvpair(vdev_guids, pair)) { 4104 uint64_t vdev_guid; 4105 if (nvpair_value_uint64(pair, &vdev_guid) != 0) { 4106 return (SET_ERROR(EINVAL)); 4107 } 4108 } 4109 4110 /* Optional, defaults to maximum rate when not provided */ 4111 uint64_t rate; 4112 if (nvlist_lookup_uint64(innvl, ZPOOL_TRIM_RATE, &rate) != 0) 4113 rate = 0; 4114 4115 /* Optional, defaults to standard TRIM when not provided */ 4116 boolean_t secure; 4117 if (nvlist_lookup_boolean_value(innvl, ZPOOL_TRIM_SECURE, 4118 &secure) != 0) { 4119 secure = B_FALSE; 4120 } 4121 4122 spa_t *spa; 4123 int error = spa_open(poolname, &spa, FTAG); 4124 if (error != 0) 4125 return (error); 4126 4127 nvlist_t *vdev_errlist = fnvlist_alloc(); 4128 int total_errors = spa_vdev_trim(spa, vdev_guids, cmd_type, 4129 rate, !!zfs_trim_metaslab_skip, secure, vdev_errlist); 4130 4131 if (fnvlist_size(vdev_errlist) > 0) 4132 fnvlist_add_nvlist(outnvl, ZPOOL_TRIM_VDEVS, vdev_errlist); 4133 4134 fnvlist_free(vdev_errlist); 4135 4136 spa_close(spa, FTAG); 4137 return (total_errors > 0 ? EINVAL : 0); 4138 } 4139 4140 /* 4141 * fsname is name of dataset to rollback (to most recent snapshot) 4142 * 4143 * innvl may contain name of expected target snapshot 4144 * 4145 * outnvl: "target" -> name of most recent snapshot 4146 * } 4147 */ 4148 static const zfs_ioc_key_t zfs_keys_rollback[] = { 4149 {"target", DATA_TYPE_STRING, ZK_OPTIONAL}, 4150 }; 4151 4152 /* ARGSUSED */ 4153 static int 4154 zfs_ioc_rollback(const char *fsname, nvlist_t *innvl, nvlist_t *outnvl) 4155 { 4156 zfsvfs_t *zfsvfs; 4157 char *target = NULL; 4158 int error; 4159 4160 (void) nvlist_lookup_string(innvl, "target", &target); 4161 if (target != NULL) { 4162 const char *cp = strchr(target, '@'); 4163 4164 /* 4165 * The snap name must contain an @, and the part after it must 4166 * contain only valid characters. 4167 */ 4168 if (cp == NULL || 4169 zfs_component_namecheck(cp + 1, NULL, NULL) != 0) 4170 return (SET_ERROR(EINVAL)); 4171 } 4172 4173 if (getzfsvfs(fsname, &zfsvfs) == 0) { 4174 dsl_dataset_t *ds; 4175 4176 ds = dmu_objset_ds(zfsvfs->z_os); 4177 error = zfs_suspend_fs(zfsvfs); 4178 if (error == 0) { 4179 int resume_err; 4180 4181 error = dsl_dataset_rollback(fsname, target, zfsvfs, 4182 outnvl); 4183 resume_err = zfs_resume_fs(zfsvfs, ds); 4184 error = error ? error : resume_err; 4185 } 4186 VFS_RELE(zfsvfs->z_vfs); 4187 } else { 4188 error = dsl_dataset_rollback(fsname, target, NULL, outnvl); 4189 } 4190 return (error); 4191 } 4192 4193 static int 4194 recursive_unmount(const char *fsname, void *arg) 4195 { 4196 const char *snapname = arg; 4197 char fullname[ZFS_MAX_DATASET_NAME_LEN]; 4198 4199 (void) snprintf(fullname, sizeof (fullname), "%s@%s", fsname, snapname); 4200 zfs_unmount_snap(fullname); 4201 4202 return (0); 4203 } 4204 4205 /* 4206 * inputs: 4207 * zc_name old name of dataset 4208 * zc_value new name of dataset 4209 * zc_cookie recursive flag (only valid for snapshots) 4210 * 4211 * outputs: none 4212 */ 4213 static int 4214 zfs_ioc_rename(zfs_cmd_t *zc) 4215 { 4216 objset_t *os; 4217 dmu_objset_type_t ost; 4218 boolean_t recursive = zc->zc_cookie & 1; 4219 char *at; 4220 int err; 4221 4222 /* "zfs rename" from and to ...%recv datasets should both fail */ 4223 zc->zc_name[sizeof (zc->zc_name) - 1] = '\0'; 4224 zc->zc_value[sizeof (zc->zc_value) - 1] = '\0'; 4225 if (dataset_namecheck(zc->zc_name, NULL, NULL) != 0 || 4226 dataset_namecheck(zc->zc_value, NULL, NULL) != 0 || 4227 strchr(zc->zc_name, '%') || strchr(zc->zc_value, '%')) 4228 return (SET_ERROR(EINVAL)); 4229 4230 err = dmu_objset_hold(zc->zc_name, FTAG, &os); 4231 if (err != 0) 4232 return (err); 4233 ost = dmu_objset_type(os); 4234 dmu_objset_rele(os, FTAG); 4235 4236 at = strchr(zc->zc_name, '@'); 4237 if (at != NULL) { 4238 /* snaps must be in same fs */ 4239 int error; 4240 4241 if (strncmp(zc->zc_name, zc->zc_value, at - zc->zc_name + 1)) 4242 return (SET_ERROR(EXDEV)); 4243 *at = '\0'; 4244 if (ost == DMU_OST_ZFS) { 4245 error = dmu_objset_find(zc->zc_name, 4246 recursive_unmount, at + 1, 4247 recursive ? DS_FIND_CHILDREN : 0); 4248 if (error != 0) { 4249 *at = '@'; 4250 return (error); 4251 } 4252 } 4253 error = dsl_dataset_rename_snapshot(zc->zc_name, 4254 at + 1, strchr(zc->zc_value, '@') + 1, recursive); 4255 *at = '@'; 4256 4257 return (error); 4258 } else { 4259 if (ost == DMU_OST_ZVOL) 4260 (void) zvol_remove_minor(zc->zc_name); 4261 return (dsl_dir_rename(zc->zc_name, zc->zc_value)); 4262 } 4263 } 4264 4265 static int 4266 zfs_check_settable(const char *dsname, nvpair_t *pair, cred_t *cr) 4267 { 4268 const char *propname = nvpair_name(pair); 4269 boolean_t issnap = (strchr(dsname, '@') != NULL); 4270 zfs_prop_t prop = zfs_name_to_prop(propname); 4271 uint64_t intval; 4272 int err; 4273 4274 if (prop == ZPROP_INVAL) { 4275 if (zfs_prop_user(propname)) { 4276 if (err = zfs_secpolicy_write_perms(dsname, 4277 ZFS_DELEG_PERM_USERPROP, cr)) 4278 return (err); 4279 return (0); 4280 } 4281 4282 if (!issnap && zfs_prop_userquota(propname)) { 4283 const char *perm = NULL; 4284 const char *uq_prefix = 4285 zfs_userquota_prop_prefixes[ZFS_PROP_USERQUOTA]; 4286 const char *gq_prefix = 4287 zfs_userquota_prop_prefixes[ZFS_PROP_GROUPQUOTA]; 4288 const char *uiq_prefix = 4289 zfs_userquota_prop_prefixes[ZFS_PROP_USEROBJQUOTA]; 4290 const char *giq_prefix = 4291 zfs_userquota_prop_prefixes[ZFS_PROP_GROUPOBJQUOTA]; 4292 const char *pq_prefix = 4293 zfs_userquota_prop_prefixes[ZFS_PROP_PROJECTQUOTA]; 4294 const char *piq_prefix = zfs_userquota_prop_prefixes[\ 4295 ZFS_PROP_PROJECTOBJQUOTA]; 4296 4297 if (strncmp(propname, uq_prefix, 4298 strlen(uq_prefix)) == 0) { 4299 perm = ZFS_DELEG_PERM_USERQUOTA; 4300 } else if (strncmp(propname, uiq_prefix, 4301 strlen(uiq_prefix)) == 0) { 4302 perm = ZFS_DELEG_PERM_USEROBJQUOTA; 4303 } else if (strncmp(propname, gq_prefix, 4304 strlen(gq_prefix)) == 0) { 4305 perm = ZFS_DELEG_PERM_GROUPQUOTA; 4306 } else if (strncmp(propname, giq_prefix, 4307 strlen(giq_prefix)) == 0) { 4308 perm = ZFS_DELEG_PERM_GROUPOBJQUOTA; 4309 } else if (strncmp(propname, pq_prefix, 4310 strlen(pq_prefix)) == 0) { 4311 perm = ZFS_DELEG_PERM_PROJECTQUOTA; 4312 } else if (strncmp(propname, piq_prefix, 4313 strlen(piq_prefix)) == 0) { 4314 perm = ZFS_DELEG_PERM_PROJECTOBJQUOTA; 4315 } else { 4316 /* {USER|GROUP|PROJECT}USED are read-only */ 4317 return (SET_ERROR(EINVAL)); 4318 } 4319 4320 if (err = zfs_secpolicy_write_perms(dsname, perm, cr)) 4321 return (err); 4322 return (0); 4323 } 4324 4325 return (SET_ERROR(EINVAL)); 4326 } 4327 4328 if (issnap) 4329 return (SET_ERROR(EINVAL)); 4330 4331 if (nvpair_type(pair) == DATA_TYPE_NVLIST) { 4332 /* 4333 * dsl_prop_get_all_impl() returns properties in this 4334 * format. 4335 */ 4336 nvlist_t *attrs; 4337 VERIFY(nvpair_value_nvlist(pair, &attrs) == 0); 4338 VERIFY(nvlist_lookup_nvpair(attrs, ZPROP_VALUE, 4339 &pair) == 0); 4340 } 4341 4342 /* 4343 * Check that this value is valid for this pool version 4344 */ 4345 switch (prop) { 4346 case ZFS_PROP_COMPRESSION: 4347 /* 4348 * If the user specified gzip compression, make sure 4349 * the SPA supports it. We ignore any errors here since 4350 * we'll catch them later. 4351 */ 4352 if (nvpair_value_uint64(pair, &intval) == 0) { 4353 if (intval >= ZIO_COMPRESS_GZIP_1 && 4354 intval <= ZIO_COMPRESS_GZIP_9 && 4355 zfs_earlier_version(dsname, 4356 SPA_VERSION_GZIP_COMPRESSION)) { 4357 return (SET_ERROR(ENOTSUP)); 4358 } 4359 4360 if (intval == ZIO_COMPRESS_ZLE && 4361 zfs_earlier_version(dsname, 4362 SPA_VERSION_ZLE_COMPRESSION)) 4363 return (SET_ERROR(ENOTSUP)); 4364 4365 if (intval == ZIO_COMPRESS_LZ4) { 4366 spa_t *spa; 4367 4368 if ((err = spa_open(dsname, &spa, FTAG)) != 0) 4369 return (err); 4370 4371 if (!spa_feature_is_enabled(spa, 4372 SPA_FEATURE_LZ4_COMPRESS)) { 4373 spa_close(spa, FTAG); 4374 return (SET_ERROR(ENOTSUP)); 4375 } 4376 spa_close(spa, FTAG); 4377 } 4378 4379 /* 4380 * If this is a bootable dataset then 4381 * verify that the compression algorithm 4382 * is supported for booting. We must return 4383 * something other than ENOTSUP since it 4384 * implies a downrev pool version. 4385 */ 4386 if (zfs_is_bootfs(dsname) && 4387 !BOOTFS_COMPRESS_VALID(intval)) { 4388 return (SET_ERROR(ERANGE)); 4389 } 4390 } 4391 break; 4392 4393 case ZFS_PROP_COPIES: 4394 if (zfs_earlier_version(dsname, SPA_VERSION_DITTO_BLOCKS)) 4395 return (SET_ERROR(ENOTSUP)); 4396 break; 4397 4398 case ZFS_PROP_RECORDSIZE: 4399 /* Record sizes above 128k need the feature to be enabled */ 4400 if (nvpair_value_uint64(pair, &intval) == 0 && 4401 intval > SPA_OLD_MAXBLOCKSIZE) { 4402 spa_t *spa; 4403 4404 /* 4405 * We don't allow setting the property above 1MB, 4406 * unless the tunable has been changed. 4407 */ 4408 if (intval > zfs_max_recordsize || 4409 intval > SPA_MAXBLOCKSIZE) 4410 return (SET_ERROR(ERANGE)); 4411 4412 if ((err = spa_open(dsname, &spa, FTAG)) != 0) 4413 return (err); 4414 4415 if (!spa_feature_is_enabled(spa, 4416 SPA_FEATURE_LARGE_BLOCKS)) { 4417 spa_close(spa, FTAG); 4418 return (SET_ERROR(ENOTSUP)); 4419 } 4420 spa_close(spa, FTAG); 4421 } 4422 break; 4423 4424 case ZFS_PROP_DNODESIZE: 4425 /* Dnode sizes above 512 need the feature to be enabled */ 4426 if (nvpair_value_uint64(pair, &intval) == 0 && 4427 intval != ZFS_DNSIZE_LEGACY) { 4428 spa_t *spa; 4429 4430 if ((err = spa_open(dsname, &spa, FTAG)) != 0) 4431 return (err); 4432 4433 if (!spa_feature_is_enabled(spa, 4434 SPA_FEATURE_LARGE_DNODE)) { 4435 spa_close(spa, FTAG); 4436 return (SET_ERROR(ENOTSUP)); 4437 } 4438 spa_close(spa, FTAG); 4439 } 4440 break; 4441 4442 case ZFS_PROP_SPECIAL_SMALL_BLOCKS: 4443 /* 4444 * This property could require the allocation classes 4445 * feature to be active for setting, however we allow 4446 * it so that tests of settable properties succeed. 4447 * The CLI will issue a warning in this case. 4448 */ 4449 break; 4450 4451 case ZFS_PROP_SHARESMB: 4452 if (zpl_earlier_version(dsname, ZPL_VERSION_FUID)) 4453 return (SET_ERROR(ENOTSUP)); 4454 break; 4455 4456 case ZFS_PROP_ACLINHERIT: 4457 if (nvpair_type(pair) == DATA_TYPE_UINT64 && 4458 nvpair_value_uint64(pair, &intval) == 0) { 4459 if (intval == ZFS_ACL_PASSTHROUGH_X && 4460 zfs_earlier_version(dsname, 4461 SPA_VERSION_PASSTHROUGH_X)) 4462 return (SET_ERROR(ENOTSUP)); 4463 } 4464 break; 4465 4466 case ZFS_PROP_CHECKSUM: 4467 case ZFS_PROP_DEDUP: 4468 { 4469 spa_feature_t feature; 4470 spa_t *spa; 4471 4472 /* dedup feature version checks */ 4473 if (prop == ZFS_PROP_DEDUP && 4474 zfs_earlier_version(dsname, SPA_VERSION_DEDUP)) 4475 return (SET_ERROR(ENOTSUP)); 4476 4477 if (nvpair_value_uint64(pair, &intval) != 0) 4478 return (SET_ERROR(EINVAL)); 4479 4480 /* check prop value is enabled in features */ 4481 feature = zio_checksum_to_feature(intval & ZIO_CHECKSUM_MASK); 4482 if (feature == SPA_FEATURE_NONE) 4483 break; 4484 4485 if ((err = spa_open(dsname, &spa, FTAG)) != 0) 4486 return (err); 4487 4488 if (!spa_feature_is_enabled(spa, feature)) { 4489 spa_close(spa, FTAG); 4490 return (SET_ERROR(ENOTSUP)); 4491 } 4492 spa_close(spa, FTAG); 4493 break; 4494 } 4495 } 4496 4497 return (zfs_secpolicy_setprop(dsname, prop, pair, CRED())); 4498 } 4499 4500 /* 4501 * Checks for a race condition to make sure we don't increment a feature flag 4502 * multiple times. 4503 */ 4504 static int 4505 zfs_prop_activate_feature_check(void *arg, dmu_tx_t *tx) 4506 { 4507 spa_t *spa = dmu_tx_pool(tx)->dp_spa; 4508 spa_feature_t *featurep = arg; 4509 4510 if (!spa_feature_is_active(spa, *featurep)) 4511 return (0); 4512 else 4513 return (SET_ERROR(EBUSY)); 4514 } 4515 4516 /* 4517 * The callback invoked on feature activation in the sync task caused by 4518 * zfs_prop_activate_feature. 4519 */ 4520 static void 4521 zfs_prop_activate_feature_sync(void *arg, dmu_tx_t *tx) 4522 { 4523 spa_t *spa = dmu_tx_pool(tx)->dp_spa; 4524 spa_feature_t *featurep = arg; 4525 4526 spa_feature_incr(spa, *featurep, tx); 4527 } 4528 4529 /* 4530 * Activates a feature on a pool in response to a property setting. This 4531 * creates a new sync task which modifies the pool to reflect the feature 4532 * as being active. 4533 */ 4534 static int 4535 zfs_prop_activate_feature(spa_t *spa, spa_feature_t feature) 4536 { 4537 int err; 4538 4539 /* EBUSY here indicates that the feature is already active */ 4540 err = dsl_sync_task(spa_name(spa), 4541 zfs_prop_activate_feature_check, zfs_prop_activate_feature_sync, 4542 &feature, 2, ZFS_SPACE_CHECK_RESERVED); 4543 4544 if (err != 0 && err != EBUSY) 4545 return (err); 4546 else 4547 return (0); 4548 } 4549 4550 /* 4551 * Removes properties from the given props list that fail permission checks 4552 * needed to clear them and to restore them in case of a receive error. For each 4553 * property, make sure we have both set and inherit permissions. 4554 * 4555 * Returns the first error encountered if any permission checks fail. If the 4556 * caller provides a non-NULL errlist, it also gives the complete list of names 4557 * of all the properties that failed a permission check along with the 4558 * corresponding error numbers. The caller is responsible for freeing the 4559 * returned errlist. 4560 * 4561 * If every property checks out successfully, zero is returned and the list 4562 * pointed at by errlist is NULL. 4563 */ 4564 static int 4565 zfs_check_clearable(char *dataset, nvlist_t *props, nvlist_t **errlist) 4566 { 4567 zfs_cmd_t *zc; 4568 nvpair_t *pair, *next_pair; 4569 nvlist_t *errors; 4570 int err, rv = 0; 4571 4572 if (props == NULL) 4573 return (0); 4574 4575 VERIFY(nvlist_alloc(&errors, NV_UNIQUE_NAME, KM_SLEEP) == 0); 4576 4577 zc = kmem_alloc(sizeof (zfs_cmd_t), KM_SLEEP); 4578 (void) strcpy(zc->zc_name, dataset); 4579 pair = nvlist_next_nvpair(props, NULL); 4580 while (pair != NULL) { 4581 next_pair = nvlist_next_nvpair(props, pair); 4582 4583 (void) strcpy(zc->zc_value, nvpair_name(pair)); 4584 if ((err = zfs_check_settable(dataset, pair, CRED())) != 0 || 4585 (err = zfs_secpolicy_inherit_prop(zc, NULL, CRED())) != 0) { 4586 VERIFY(nvlist_remove_nvpair(props, pair) == 0); 4587 VERIFY(nvlist_add_int32(errors, 4588 zc->zc_value, err) == 0); 4589 } 4590 pair = next_pair; 4591 } 4592 kmem_free(zc, sizeof (zfs_cmd_t)); 4593 4594 if ((pair = nvlist_next_nvpair(errors, NULL)) == NULL) { 4595 nvlist_free(errors); 4596 errors = NULL; 4597 } else { 4598 VERIFY(nvpair_value_int32(pair, &rv) == 0); 4599 } 4600 4601 if (errlist == NULL) 4602 nvlist_free(errors); 4603 else 4604 *errlist = errors; 4605 4606 return (rv); 4607 } 4608 4609 static boolean_t 4610 propval_equals(nvpair_t *p1, nvpair_t *p2) 4611 { 4612 if (nvpair_type(p1) == DATA_TYPE_NVLIST) { 4613 /* dsl_prop_get_all_impl() format */ 4614 nvlist_t *attrs; 4615 VERIFY(nvpair_value_nvlist(p1, &attrs) == 0); 4616 VERIFY(nvlist_lookup_nvpair(attrs, ZPROP_VALUE, 4617 &p1) == 0); 4618 } 4619 4620 if (nvpair_type(p2) == DATA_TYPE_NVLIST) { 4621 nvlist_t *attrs; 4622 VERIFY(nvpair_value_nvlist(p2, &attrs) == 0); 4623 VERIFY(nvlist_lookup_nvpair(attrs, ZPROP_VALUE, 4624 &p2) == 0); 4625 } 4626 4627 if (nvpair_type(p1) != nvpair_type(p2)) 4628 return (B_FALSE); 4629 4630 if (nvpair_type(p1) == DATA_TYPE_STRING) { 4631 char *valstr1, *valstr2; 4632 4633 VERIFY(nvpair_value_string(p1, (char **)&valstr1) == 0); 4634 VERIFY(nvpair_value_string(p2, (char **)&valstr2) == 0); 4635 return (strcmp(valstr1, valstr2) == 0); 4636 } else { 4637 uint64_t intval1, intval2; 4638 4639 VERIFY(nvpair_value_uint64(p1, &intval1) == 0); 4640 VERIFY(nvpair_value_uint64(p2, &intval2) == 0); 4641 return (intval1 == intval2); 4642 } 4643 } 4644 4645 /* 4646 * Remove properties from props if they are not going to change (as determined 4647 * by comparison with origprops). Remove them from origprops as well, since we 4648 * do not need to clear or restore properties that won't change. 4649 */ 4650 static void 4651 props_reduce(nvlist_t *props, nvlist_t *origprops) 4652 { 4653 nvpair_t *pair, *next_pair; 4654 4655 if (origprops == NULL) 4656 return; /* all props need to be received */ 4657 4658 pair = nvlist_next_nvpair(props, NULL); 4659 while (pair != NULL) { 4660 const char *propname = nvpair_name(pair); 4661 nvpair_t *match; 4662 4663 next_pair = nvlist_next_nvpair(props, pair); 4664 4665 if ((nvlist_lookup_nvpair(origprops, propname, 4666 &match) != 0) || !propval_equals(pair, match)) 4667 goto next; /* need to set received value */ 4668 4669 /* don't clear the existing received value */ 4670 (void) nvlist_remove_nvpair(origprops, match); 4671 /* don't bother receiving the property */ 4672 (void) nvlist_remove_nvpair(props, pair); 4673 next: 4674 pair = next_pair; 4675 } 4676 } 4677 4678 /* 4679 * Extract properties that cannot be set PRIOR to the receipt of a dataset. 4680 * For example, refquota cannot be set until after the receipt of a dataset, 4681 * because in replication streams, an older/earlier snapshot may exceed the 4682 * refquota. We want to receive the older/earlier snapshot, but setting 4683 * refquota pre-receipt will set the dsl's ACTUAL quota, which will prevent 4684 * the older/earlier snapshot from being received (with EDQUOT). 4685 * 4686 * The ZFS test "zfs_receive_011_pos" demonstrates such a scenario. 4687 * 4688 * libzfs will need to be judicious handling errors encountered by props 4689 * extracted by this function. 4690 */ 4691 static nvlist_t * 4692 extract_delay_props(nvlist_t *props) 4693 { 4694 nvlist_t *delayprops; 4695 nvpair_t *nvp, *tmp; 4696 static const zfs_prop_t delayable[] = { 4697 ZFS_PROP_REFQUOTA, 4698 ZFS_PROP_KEYLOCATION, 4699 0 4700 }; 4701 int i; 4702 4703 VERIFY(nvlist_alloc(&delayprops, NV_UNIQUE_NAME, KM_SLEEP) == 0); 4704 4705 for (nvp = nvlist_next_nvpair(props, NULL); nvp != NULL; 4706 nvp = nvlist_next_nvpair(props, nvp)) { 4707 /* 4708 * strcmp() is safe because zfs_prop_to_name() always returns 4709 * a bounded string. 4710 */ 4711 for (i = 0; delayable[i] != 0; i++) { 4712 if (strcmp(zfs_prop_to_name(delayable[i]), 4713 nvpair_name(nvp)) == 0) { 4714 break; 4715 } 4716 } 4717 if (delayable[i] != 0) { 4718 tmp = nvlist_prev_nvpair(props, nvp); 4719 VERIFY(nvlist_add_nvpair(delayprops, nvp) == 0); 4720 VERIFY(nvlist_remove_nvpair(props, nvp) == 0); 4721 nvp = tmp; 4722 } 4723 } 4724 4725 if (nvlist_empty(delayprops)) { 4726 nvlist_free(delayprops); 4727 delayprops = NULL; 4728 } 4729 return (delayprops); 4730 } 4731 4732 #ifdef DEBUG 4733 static boolean_t zfs_ioc_recv_inject_err; 4734 #endif 4735 4736 /* 4737 * nvlist 'errors' is always allocated. It will contain descriptions of 4738 * encountered errors, if any. It's the callers responsibility to free. 4739 */ 4740 static int 4741 zfs_ioc_recv_impl(char *tofs, char *tosnap, char *origin, nvlist_t *recvprops, 4742 nvlist_t *localprops, nvlist_t *hidden_args, boolean_t force, 4743 boolean_t resumable, int input_fd, dmu_replay_record_t *begin_record, 4744 int cleanup_fd, uint64_t *read_bytes, uint64_t *errflags, 4745 uint64_t *action_handle, nvlist_t **errors) 4746 { 4747 dmu_recv_cookie_t drc; 4748 int error = 0; 4749 int props_error = 0; 4750 offset_t off; 4751 nvlist_t *local_delayprops = NULL; 4752 nvlist_t *recv_delayprops = NULL; 4753 nvlist_t *origprops = NULL; /* existing properties */ 4754 nvlist_t *origrecvd = NULL; /* existing received properties */ 4755 boolean_t first_recvd_props = B_FALSE; 4756 file_t *input_fp; 4757 4758 *read_bytes = 0; 4759 *errflags = 0; 4760 *errors = fnvlist_alloc(); 4761 4762 input_fp = getf(input_fd); 4763 if (input_fp == NULL) 4764 return (SET_ERROR(EBADF)); 4765 4766 error = dmu_recv_begin(tofs, tosnap, begin_record, force, 4767 resumable, localprops, hidden_args, origin, &drc); 4768 if (error != 0) 4769 goto out; 4770 4771 /* 4772 * Set properties before we receive the stream so that they are applied 4773 * to the new data. Note that we must call dmu_recv_stream() if 4774 * dmu_recv_begin() succeeds. 4775 */ 4776 if (recvprops != NULL && !drc.drc_newfs) { 4777 if (spa_version(dsl_dataset_get_spa(drc.drc_ds)) >= 4778 SPA_VERSION_RECVD_PROPS && 4779 !dsl_prop_get_hasrecvd(tofs)) 4780 first_recvd_props = B_TRUE; 4781 4782 /* 4783 * If new received properties are supplied, they are to 4784 * completely replace the existing received properties, 4785 * so stash away the existing ones. 4786 */ 4787 if (dsl_prop_get_received(tofs, &origrecvd) == 0) { 4788 nvlist_t *errlist = NULL; 4789 /* 4790 * Don't bother writing a property if its value won't 4791 * change (and avoid the unnecessary security checks). 4792 * 4793 * The first receive after SPA_VERSION_RECVD_PROPS is a 4794 * special case where we blow away all local properties 4795 * regardless. 4796 */ 4797 if (!first_recvd_props) 4798 props_reduce(recvprops, origrecvd); 4799 if (zfs_check_clearable(tofs, origrecvd, &errlist) != 0) 4800 (void) nvlist_merge(*errors, errlist, 0); 4801 nvlist_free(errlist); 4802 4803 if (clear_received_props(tofs, origrecvd, 4804 first_recvd_props ? NULL : recvprops) != 0) 4805 *errflags |= ZPROP_ERR_NOCLEAR; 4806 } else { 4807 *errflags |= ZPROP_ERR_NOCLEAR; 4808 } 4809 } 4810 4811 /* 4812 * Stash away existing properties so we can restore them on error unless 4813 * we're doing the first receive after SPA_VERSION_RECVD_PROPS, in which 4814 * case "origrecvd" will take care of that. 4815 */ 4816 if (localprops != NULL && !drc.drc_newfs && !first_recvd_props) { 4817 objset_t *os; 4818 if (dmu_objset_hold(tofs, FTAG, &os) == 0) { 4819 if (dsl_prop_get_all(os, &origprops) != 0) { 4820 *errflags |= ZPROP_ERR_NOCLEAR; 4821 } 4822 dmu_objset_rele(os, FTAG); 4823 } else { 4824 *errflags |= ZPROP_ERR_NOCLEAR; 4825 } 4826 } 4827 4828 if (recvprops != NULL) { 4829 props_error = dsl_prop_set_hasrecvd(tofs); 4830 4831 if (props_error == 0) { 4832 recv_delayprops = extract_delay_props(recvprops); 4833 (void) zfs_set_prop_nvlist(tofs, ZPROP_SRC_RECEIVED, 4834 recvprops, *errors); 4835 } 4836 } 4837 4838 if (localprops != NULL) { 4839 nvlist_t *oprops = fnvlist_alloc(); 4840 nvlist_t *xprops = fnvlist_alloc(); 4841 nvpair_t *nvp = NULL; 4842 4843 while ((nvp = nvlist_next_nvpair(localprops, nvp)) != NULL) { 4844 if (nvpair_type(nvp) == DATA_TYPE_BOOLEAN) { 4845 /* -x property */ 4846 const char *name = nvpair_name(nvp); 4847 zfs_prop_t prop = zfs_name_to_prop(name); 4848 if (prop != ZPROP_INVAL) { 4849 if (!zfs_prop_inheritable(prop)) 4850 continue; 4851 } else if (!zfs_prop_user(name)) 4852 continue; 4853 fnvlist_add_boolean(xprops, name); 4854 } else { 4855 /* -o property=value */ 4856 fnvlist_add_nvpair(oprops, nvp); 4857 } 4858 } 4859 4860 local_delayprops = extract_delay_props(oprops); 4861 (void) zfs_set_prop_nvlist(tofs, ZPROP_SRC_LOCAL, 4862 oprops, *errors); 4863 (void) zfs_set_prop_nvlist(tofs, ZPROP_SRC_INHERITED, 4864 xprops, *errors); 4865 4866 nvlist_free(oprops); 4867 nvlist_free(xprops); 4868 } 4869 4870 off = input_fp->f_offset; 4871 error = dmu_recv_stream(&drc, input_fp->f_vnode, &off, cleanup_fd, 4872 action_handle); 4873 4874 if (error == 0) { 4875 zfsvfs_t *zfsvfs = NULL; 4876 4877 if (getzfsvfs(tofs, &zfsvfs) == 0) { 4878 /* online recv */ 4879 dsl_dataset_t *ds; 4880 int end_err; 4881 4882 ds = dmu_objset_ds(zfsvfs->z_os); 4883 error = zfs_suspend_fs(zfsvfs); 4884 /* 4885 * If the suspend fails, then the recv_end will 4886 * likely also fail, and clean up after itself. 4887 */ 4888 end_err = dmu_recv_end(&drc, zfsvfs); 4889 if (error == 0) 4890 error = zfs_resume_fs(zfsvfs, ds); 4891 error = error ? error : end_err; 4892 VFS_RELE(zfsvfs->z_vfs); 4893 } else { 4894 error = dmu_recv_end(&drc, NULL); 4895 } 4896 4897 /* Set delayed properties now, after we're done receiving. */ 4898 if (recv_delayprops != NULL && error == 0) { 4899 (void) zfs_set_prop_nvlist(tofs, ZPROP_SRC_RECEIVED, 4900 recv_delayprops, *errors); 4901 } 4902 if (local_delayprops != NULL && error == 0) { 4903 (void) zfs_set_prop_nvlist(tofs, ZPROP_SRC_LOCAL, 4904 local_delayprops, *errors); 4905 } 4906 } 4907 4908 /* 4909 * Merge delayed props back in with initial props, in case 4910 * we're DEBUG and zfs_ioc_recv_inject_err is set (which means 4911 * we have to make sure clear_received_props() includes 4912 * the delayed properties). 4913 * 4914 * Since zfs_ioc_recv_inject_err is only in DEBUG kernels, 4915 * using ASSERT() will be just like a VERIFY. 4916 */ 4917 if (recv_delayprops != NULL) { 4918 ASSERT(nvlist_merge(recvprops, recv_delayprops, 0) == 0); 4919 nvlist_free(recv_delayprops); 4920 } 4921 if (local_delayprops != NULL) { 4922 ASSERT(nvlist_merge(localprops, local_delayprops, 0) == 0); 4923 nvlist_free(local_delayprops); 4924 } 4925 4926 *read_bytes = off - input_fp->f_offset; 4927 if (VOP_SEEK(input_fp->f_vnode, input_fp->f_offset, &off, NULL) == 0) 4928 input_fp->f_offset = off; 4929 4930 #ifdef DEBUG 4931 if (zfs_ioc_recv_inject_err) { 4932 zfs_ioc_recv_inject_err = B_FALSE; 4933 error = 1; 4934 } 4935 #endif 4936 4937 /* 4938 * On error, restore the original props. 4939 */ 4940 if (error != 0 && recvprops != NULL && !drc.drc_newfs) { 4941 if (clear_received_props(tofs, recvprops, NULL) != 0) { 4942 /* 4943 * We failed to clear the received properties. 4944 * Since we may have left a $recvd value on the 4945 * system, we can't clear the $hasrecvd flag. 4946 */ 4947 *errflags |= ZPROP_ERR_NORESTORE; 4948 } else if (first_recvd_props) { 4949 dsl_prop_unset_hasrecvd(tofs); 4950 } 4951 4952 if (origrecvd == NULL && !drc.drc_newfs) { 4953 /* We failed to stash the original properties. */ 4954 *errflags |= ZPROP_ERR_NORESTORE; 4955 } 4956 4957 /* 4958 * dsl_props_set() will not convert RECEIVED to LOCAL on or 4959 * after SPA_VERSION_RECVD_PROPS, so we need to specify LOCAL 4960 * explicitly if we're restoring local properties cleared in the 4961 * first new-style receive. 4962 */ 4963 if (origrecvd != NULL && 4964 zfs_set_prop_nvlist(tofs, (first_recvd_props ? 4965 ZPROP_SRC_LOCAL : ZPROP_SRC_RECEIVED), 4966 origrecvd, NULL) != 0) { 4967 /* 4968 * We stashed the original properties but failed to 4969 * restore them. 4970 */ 4971 *errflags |= ZPROP_ERR_NORESTORE; 4972 } 4973 } 4974 if (error != 0 && localprops != NULL && !drc.drc_newfs && 4975 !first_recvd_props) { 4976 nvlist_t *setprops; 4977 nvlist_t *inheritprops; 4978 nvpair_t *nvp; 4979 4980 if (origprops == NULL) { 4981 /* We failed to stash the original properties. */ 4982 *errflags |= ZPROP_ERR_NORESTORE; 4983 goto out; 4984 } 4985 4986 /* Restore original props */ 4987 setprops = fnvlist_alloc(); 4988 inheritprops = fnvlist_alloc(); 4989 nvp = NULL; 4990 while ((nvp = nvlist_next_nvpair(localprops, nvp)) != NULL) { 4991 const char *name = nvpair_name(nvp); 4992 const char *source; 4993 nvlist_t *attrs; 4994 4995 if (!nvlist_exists(origprops, name)) { 4996 /* 4997 * Property was not present or was explicitly 4998 * inherited before the receive, restore this. 4999 */ 5000 fnvlist_add_boolean(inheritprops, name); 5001 continue; 5002 } 5003 attrs = fnvlist_lookup_nvlist(origprops, name); 5004 source = fnvlist_lookup_string(attrs, ZPROP_SOURCE); 5005 5006 /* Skip received properties */ 5007 if (strcmp(source, ZPROP_SOURCE_VAL_RECVD) == 0) 5008 continue; 5009 5010 if (strcmp(source, tofs) == 0) { 5011 /* Property was locally set */ 5012 fnvlist_add_nvlist(setprops, name, attrs); 5013 } else { 5014 /* Property was implicitly inherited */ 5015 fnvlist_add_boolean(inheritprops, name); 5016 } 5017 } 5018 5019 if (zfs_set_prop_nvlist(tofs, ZPROP_SRC_LOCAL, setprops, 5020 NULL) != 0) 5021 *errflags |= ZPROP_ERR_NORESTORE; 5022 if (zfs_set_prop_nvlist(tofs, ZPROP_SRC_INHERITED, inheritprops, 5023 NULL) != 0) 5024 *errflags |= ZPROP_ERR_NORESTORE; 5025 5026 nvlist_free(setprops); 5027 nvlist_free(inheritprops); 5028 } 5029 out: 5030 releasef(input_fd); 5031 nvlist_free(origrecvd); 5032 nvlist_free(origprops); 5033 5034 if (error == 0) 5035 error = props_error; 5036 5037 return (error); 5038 } 5039 5040 /* 5041 * inputs: 5042 * zc_name name of containing filesystem 5043 * zc_nvlist_src{_size} nvlist of received properties to apply 5044 * zc_nvlist_conf{_size} nvlist of local properties to apply 5045 * zc_history_offset{_len} nvlist of hidden args { "wkeydata" -> value } 5046 * zc_value name of snapshot to create 5047 * zc_string name of clone origin (if DRR_FLAG_CLONE) 5048 * zc_cookie file descriptor to recv from 5049 * zc_begin_record the BEGIN record of the stream (not byteswapped) 5050 * zc_guid force flag 5051 * zc_cleanup_fd cleanup-on-exit file descriptor 5052 * zc_action_handle handle for this guid/ds mapping (or zero on first call) 5053 * zc_resumable if data is incomplete assume sender will resume 5054 * 5055 * outputs: 5056 * zc_cookie number of bytes read 5057 * zc_nvlist_dst{_size} error for each unapplied received property 5058 * zc_obj zprop_errflags_t 5059 * zc_action_handle handle for this guid/ds mapping 5060 */ 5061 static int 5062 zfs_ioc_recv(zfs_cmd_t *zc) 5063 { 5064 dmu_replay_record_t begin_record; 5065 nvlist_t *errors = NULL; 5066 nvlist_t *recvdprops = NULL; 5067 nvlist_t *localprops = NULL; 5068 nvlist_t *hidden_args = NULL; 5069 char *origin = NULL; 5070 char *tosnap; 5071 char tofs[ZFS_MAX_DATASET_NAME_LEN]; 5072 int error = 0; 5073 5074 if (dataset_namecheck(zc->zc_value, NULL, NULL) != 0 || 5075 strchr(zc->zc_value, '@') == NULL || 5076 strchr(zc->zc_value, '%') != NULL) { 5077 return (SET_ERROR(EINVAL)); 5078 } 5079 5080 (void) strlcpy(tofs, zc->zc_value, sizeof (tofs)); 5081 tosnap = strchr(tofs, '@'); 5082 *tosnap++ = '\0'; 5083 5084 if (zc->zc_nvlist_src != 0 && 5085 (error = get_nvlist(zc->zc_nvlist_src, zc->zc_nvlist_src_size, 5086 zc->zc_iflags, &recvdprops)) != 0) { 5087 goto out; 5088 } 5089 5090 if (zc->zc_nvlist_conf != 0 && 5091 (error = get_nvlist(zc->zc_nvlist_conf, zc->zc_nvlist_conf_size, 5092 zc->zc_iflags, &localprops)) != 0) { 5093 goto out; 5094 } 5095 5096 if (zc->zc_history_offset != 0 && 5097 (error = get_nvlist(zc->zc_history_offset, zc->zc_history_len, 5098 zc->zc_iflags, &hidden_args)) != 0) { 5099 goto out; 5100 } 5101 5102 if (zc->zc_string[0]) 5103 origin = zc->zc_string; 5104 5105 begin_record.drr_type = DRR_BEGIN; 5106 begin_record.drr_payloadlen = zc->zc_begin_record.drr_payloadlen; 5107 begin_record.drr_u.drr_begin = zc->zc_begin_record.drr_u.drr_begin; 5108 5109 error = zfs_ioc_recv_impl(tofs, tosnap, origin, recvdprops, localprops, 5110 hidden_args, zc->zc_guid, zc->zc_resumable, zc->zc_cookie, 5111 &begin_record, zc->zc_cleanup_fd, &zc->zc_cookie, &zc->zc_obj, 5112 &zc->zc_action_handle, &errors); 5113 5114 /* 5115 * Now that all props, initial and delayed, are set, report the prop 5116 * errors to the caller. 5117 */ 5118 if (zc->zc_nvlist_dst_size != 0 && errors != NULL && 5119 (nvlist_smush(errors, zc->zc_nvlist_dst_size) != 0 || 5120 put_nvlist(zc, errors) != 0)) { 5121 /* 5122 * Caller made zc->zc_nvlist_dst less than the minimum expected 5123 * size or supplied an invalid address. 5124 */ 5125 error = SET_ERROR(EINVAL); 5126 } 5127 5128 out: 5129 nvlist_free(hidden_args); 5130 nvlist_free(recvdprops); 5131 nvlist_free(localprops); 5132 nvlist_free(errors); 5133 5134 return (error); 5135 } 5136 5137 /* 5138 * inputs: 5139 * zc_name name of snapshot to send 5140 * zc_cookie file descriptor to send stream to 5141 * zc_obj fromorigin flag (mutually exclusive with zc_fromobj) 5142 * zc_sendobj objsetid of snapshot to send 5143 * zc_fromobj objsetid of incremental fromsnap (may be zero) 5144 * zc_guid if set, estimate size of stream only. zc_cookie is ignored. 5145 * output size in zc_objset_type. 5146 * zc_flags lzc_send_flags 5147 * 5148 * outputs: 5149 * zc_objset_type estimated size, if zc_guid is set 5150 */ 5151 static int 5152 zfs_ioc_send(zfs_cmd_t *zc) 5153 { 5154 int error; 5155 offset_t off; 5156 boolean_t estimate = (zc->zc_guid != 0); 5157 boolean_t embedok = (zc->zc_flags & 0x1); 5158 boolean_t large_block_ok = (zc->zc_flags & 0x2); 5159 boolean_t compressok = (zc->zc_flags & 0x4); 5160 boolean_t rawok = (zc->zc_flags & 0x8); 5161 5162 if (zc->zc_obj != 0) { 5163 dsl_pool_t *dp; 5164 dsl_dataset_t *tosnap; 5165 5166 error = dsl_pool_hold(zc->zc_name, FTAG, &dp); 5167 if (error != 0) 5168 return (error); 5169 5170 error = dsl_dataset_hold_obj(dp, zc->zc_sendobj, FTAG, &tosnap); 5171 if (error != 0) { 5172 dsl_pool_rele(dp, FTAG); 5173 return (error); 5174 } 5175 5176 if (dsl_dir_is_clone(tosnap->ds_dir)) 5177 zc->zc_fromobj = 5178 dsl_dir_phys(tosnap->ds_dir)->dd_origin_obj; 5179 dsl_dataset_rele(tosnap, FTAG); 5180 dsl_pool_rele(dp, FTAG); 5181 } 5182 5183 if (estimate) { 5184 dsl_pool_t *dp; 5185 dsl_dataset_t *tosnap; 5186 dsl_dataset_t *fromsnap = NULL; 5187 5188 error = dsl_pool_hold(zc->zc_name, FTAG, &dp); 5189 if (error != 0) 5190 return (error); 5191 5192 error = dsl_dataset_hold_obj(dp, zc->zc_sendobj, 5193 FTAG, &tosnap); 5194 if (error != 0) { 5195 dsl_pool_rele(dp, FTAG); 5196 return (error); 5197 } 5198 5199 if (zc->zc_fromobj != 0) { 5200 error = dsl_dataset_hold_obj(dp, zc->zc_fromobj, 5201 FTAG, &fromsnap); 5202 if (error != 0) { 5203 dsl_dataset_rele(tosnap, FTAG); 5204 dsl_pool_rele(dp, FTAG); 5205 return (error); 5206 } 5207 } 5208 5209 error = dmu_send_estimate(tosnap, fromsnap, compressok || rawok, 5210 &zc->zc_objset_type); 5211 5212 if (fromsnap != NULL) 5213 dsl_dataset_rele(fromsnap, FTAG); 5214 dsl_dataset_rele(tosnap, FTAG); 5215 dsl_pool_rele(dp, FTAG); 5216 } else { 5217 file_t *fp = getf(zc->zc_cookie); 5218 if (fp == NULL) 5219 return (SET_ERROR(EBADF)); 5220 5221 off = fp->f_offset; 5222 error = dmu_send_obj(zc->zc_name, zc->zc_sendobj, 5223 zc->zc_fromobj, embedok, large_block_ok, compressok, rawok, 5224 zc->zc_cookie, fp->f_vnode, &off); 5225 5226 if (VOP_SEEK(fp->f_vnode, fp->f_offset, &off, NULL) == 0) 5227 fp->f_offset = off; 5228 releasef(zc->zc_cookie); 5229 } 5230 return (error); 5231 } 5232 5233 /* 5234 * inputs: 5235 * zc_name name of snapshot on which to report progress 5236 * zc_cookie file descriptor of send stream 5237 * 5238 * outputs: 5239 * zc_cookie number of bytes written in send stream thus far 5240 */ 5241 static int 5242 zfs_ioc_send_progress(zfs_cmd_t *zc) 5243 { 5244 dsl_pool_t *dp; 5245 dsl_dataset_t *ds; 5246 dmu_sendarg_t *dsp = NULL; 5247 int error; 5248 5249 error = dsl_pool_hold(zc->zc_name, FTAG, &dp); 5250 if (error != 0) 5251 return (error); 5252 5253 error = dsl_dataset_hold(dp, zc->zc_name, FTAG, &ds); 5254 if (error != 0) { 5255 dsl_pool_rele(dp, FTAG); 5256 return (error); 5257 } 5258 5259 mutex_enter(&ds->ds_sendstream_lock); 5260 5261 /* 5262 * Iterate over all the send streams currently active on this dataset. 5263 * If there's one which matches the specified file descriptor _and_ the 5264 * stream was started by the current process, return the progress of 5265 * that stream. 5266 */ 5267 for (dsp = list_head(&ds->ds_sendstreams); dsp != NULL; 5268 dsp = list_next(&ds->ds_sendstreams, dsp)) { 5269 if (dsp->dsa_outfd == zc->zc_cookie && 5270 dsp->dsa_proc == curproc) 5271 break; 5272 } 5273 5274 if (dsp != NULL) 5275 zc->zc_cookie = *(dsp->dsa_off); 5276 else 5277 error = SET_ERROR(ENOENT); 5278 5279 mutex_exit(&ds->ds_sendstream_lock); 5280 dsl_dataset_rele(ds, FTAG); 5281 dsl_pool_rele(dp, FTAG); 5282 return (error); 5283 } 5284 5285 static int 5286 zfs_ioc_inject_fault(zfs_cmd_t *zc) 5287 { 5288 int id, error; 5289 5290 error = zio_inject_fault(zc->zc_name, (int)zc->zc_guid, &id, 5291 &zc->zc_inject_record); 5292 5293 if (error == 0) 5294 zc->zc_guid = (uint64_t)id; 5295 5296 return (error); 5297 } 5298 5299 static int 5300 zfs_ioc_clear_fault(zfs_cmd_t *zc) 5301 { 5302 return (zio_clear_fault((int)zc->zc_guid)); 5303 } 5304 5305 static int 5306 zfs_ioc_inject_list_next(zfs_cmd_t *zc) 5307 { 5308 int id = (int)zc->zc_guid; 5309 int error; 5310 5311 error = zio_inject_list_next(&id, zc->zc_name, sizeof (zc->zc_name), 5312 &zc->zc_inject_record); 5313 5314 zc->zc_guid = id; 5315 5316 return (error); 5317 } 5318 5319 static int 5320 zfs_ioc_error_log(zfs_cmd_t *zc) 5321 { 5322 spa_t *spa; 5323 int error; 5324 size_t count = (size_t)zc->zc_nvlist_dst_size; 5325 5326 if ((error = spa_open(zc->zc_name, &spa, FTAG)) != 0) 5327 return (error); 5328 5329 error = spa_get_errlog(spa, (void *)(uintptr_t)zc->zc_nvlist_dst, 5330 &count); 5331 if (error == 0) 5332 zc->zc_nvlist_dst_size = count; 5333 else 5334 zc->zc_nvlist_dst_size = spa_get_errlog_size(spa); 5335 5336 spa_close(spa, FTAG); 5337 5338 return (error); 5339 } 5340 5341 static int 5342 zfs_ioc_clear(zfs_cmd_t *zc) 5343 { 5344 spa_t *spa; 5345 vdev_t *vd; 5346 int error; 5347 5348 /* 5349 * On zpool clear we also fix up missing slogs 5350 */ 5351 mutex_enter(&spa_namespace_lock); 5352 spa = spa_lookup(zc->zc_name); 5353 if (spa == NULL) { 5354 mutex_exit(&spa_namespace_lock); 5355 return (SET_ERROR(EIO)); 5356 } 5357 if (spa_get_log_state(spa) == SPA_LOG_MISSING) { 5358 /* we need to let spa_open/spa_load clear the chains */ 5359 spa_set_log_state(spa, SPA_LOG_CLEAR); 5360 } 5361 spa->spa_last_open_failed = 0; 5362 mutex_exit(&spa_namespace_lock); 5363 5364 if (zc->zc_cookie & ZPOOL_NO_REWIND) { 5365 error = spa_open(zc->zc_name, &spa, FTAG); 5366 } else { 5367 nvlist_t *policy; 5368 nvlist_t *config = NULL; 5369 5370 if (zc->zc_nvlist_src == 0) 5371 return (SET_ERROR(EINVAL)); 5372 5373 if ((error = get_nvlist(zc->zc_nvlist_src, 5374 zc->zc_nvlist_src_size, zc->zc_iflags, &policy)) == 0) { 5375 error = spa_open_rewind(zc->zc_name, &spa, FTAG, 5376 policy, &config); 5377 if (config != NULL) { 5378 int err; 5379 5380 if ((err = put_nvlist(zc, config)) != 0) 5381 error = err; 5382 nvlist_free(config); 5383 } 5384 nvlist_free(policy); 5385 } 5386 } 5387 5388 if (error != 0) 5389 return (error); 5390 5391 /* 5392 * If multihost is enabled, resuming I/O is unsafe as another 5393 * host may have imported the pool. 5394 */ 5395 if (spa_multihost(spa) && spa_suspended(spa)) 5396 return (SET_ERROR(EINVAL)); 5397 5398 spa_vdev_state_enter(spa, SCL_NONE); 5399 5400 if (zc->zc_guid == 0) { 5401 vd = NULL; 5402 } else { 5403 vd = spa_lookup_by_guid(spa, zc->zc_guid, B_TRUE); 5404 if (vd == NULL) { 5405 (void) spa_vdev_state_exit(spa, NULL, ENODEV); 5406 spa_close(spa, FTAG); 5407 return (SET_ERROR(ENODEV)); 5408 } 5409 } 5410 5411 vdev_clear(spa, vd); 5412 5413 (void) spa_vdev_state_exit(spa, NULL, 0); 5414 5415 /* 5416 * Resume any suspended I/Os. 5417 */ 5418 if (zio_resume(spa) != 0) 5419 error = SET_ERROR(EIO); 5420 5421 spa_close(spa, FTAG); 5422 5423 return (error); 5424 } 5425 5426 static int 5427 zfs_ioc_pool_reopen(zfs_cmd_t *zc) 5428 { 5429 spa_t *spa; 5430 int error; 5431 5432 error = spa_open(zc->zc_name, &spa, FTAG); 5433 if (error != 0) 5434 return (error); 5435 5436 spa_vdev_state_enter(spa, SCL_NONE); 5437 5438 /* 5439 * If a resilver is already in progress then set the 5440 * spa_scrub_reopen flag to B_TRUE so that we don't restart 5441 * the scan as a side effect of the reopen. Otherwise, let 5442 * vdev_open() decided if a resilver is required. 5443 */ 5444 spa->spa_scrub_reopen = dsl_scan_resilvering(spa->spa_dsl_pool); 5445 vdev_reopen(spa->spa_root_vdev); 5446 spa->spa_scrub_reopen = B_FALSE; 5447 5448 (void) spa_vdev_state_exit(spa, NULL, 0); 5449 spa_close(spa, FTAG); 5450 return (0); 5451 } 5452 /* 5453 * inputs: 5454 * zc_name name of filesystem 5455 * 5456 * outputs: 5457 * zc_string name of conflicting snapshot, if there is one 5458 */ 5459 static int 5460 zfs_ioc_promote(zfs_cmd_t *zc) 5461 { 5462 dsl_pool_t *dp; 5463 dsl_dataset_t *ds, *ods; 5464 char origin[ZFS_MAX_DATASET_NAME_LEN]; 5465 char *cp; 5466 int error; 5467 5468 zc->zc_name[sizeof (zc->zc_name) - 1] = '\0'; 5469 if (dataset_namecheck(zc->zc_name, NULL, NULL) != 0 || 5470 strchr(zc->zc_name, '%')) 5471 return (SET_ERROR(EINVAL)); 5472 5473 error = dsl_pool_hold(zc->zc_name, FTAG, &dp); 5474 if (error != 0) 5475 return (error); 5476 5477 error = dsl_dataset_hold(dp, zc->zc_name, FTAG, &ds); 5478 if (error != 0) { 5479 dsl_pool_rele(dp, FTAG); 5480 return (error); 5481 } 5482 5483 if (!dsl_dir_is_clone(ds->ds_dir)) { 5484 dsl_dataset_rele(ds, FTAG); 5485 dsl_pool_rele(dp, FTAG); 5486 return (SET_ERROR(EINVAL)); 5487 } 5488 5489 error = dsl_dataset_hold_obj(dp, 5490 dsl_dir_phys(ds->ds_dir)->dd_origin_obj, FTAG, &ods); 5491 if (error != 0) { 5492 dsl_dataset_rele(ds, FTAG); 5493 dsl_pool_rele(dp, FTAG); 5494 return (error); 5495 } 5496 5497 dsl_dataset_name(ods, origin); 5498 dsl_dataset_rele(ods, FTAG); 5499 dsl_dataset_rele(ds, FTAG); 5500 dsl_pool_rele(dp, FTAG); 5501 5502 /* 5503 * We don't need to unmount *all* the origin fs's snapshots, but 5504 * it's easier. 5505 */ 5506 cp = strchr(origin, '@'); 5507 if (cp) 5508 *cp = '\0'; 5509 (void) dmu_objset_find(origin, 5510 zfs_unmount_snap_cb, NULL, DS_FIND_SNAPSHOTS); 5511 return (dsl_dataset_promote(zc->zc_name, zc->zc_string)); 5512 } 5513 5514 /* 5515 * Retrieve a single {user|group|project}{used|quota}@... property. 5516 * 5517 * inputs: 5518 * zc_name name of filesystem 5519 * zc_objset_type zfs_userquota_prop_t 5520 * zc_value domain name (eg. "S-1-234-567-89") 5521 * zc_guid RID/UID/GID 5522 * 5523 * outputs: 5524 * zc_cookie property value 5525 */ 5526 static int 5527 zfs_ioc_userspace_one(zfs_cmd_t *zc) 5528 { 5529 zfsvfs_t *zfsvfs; 5530 int error; 5531 5532 if (zc->zc_objset_type >= ZFS_NUM_USERQUOTA_PROPS) 5533 return (SET_ERROR(EINVAL)); 5534 5535 error = zfsvfs_hold(zc->zc_name, FTAG, &zfsvfs, B_FALSE); 5536 if (error != 0) 5537 return (error); 5538 5539 error = zfs_userspace_one(zfsvfs, 5540 zc->zc_objset_type, zc->zc_value, zc->zc_guid, &zc->zc_cookie); 5541 zfsvfs_rele(zfsvfs, FTAG); 5542 5543 return (error); 5544 } 5545 5546 /* 5547 * inputs: 5548 * zc_name name of filesystem 5549 * zc_cookie zap cursor 5550 * zc_objset_type zfs_userquota_prop_t 5551 * zc_nvlist_dst[_size] buffer to fill (not really an nvlist) 5552 * 5553 * outputs: 5554 * zc_nvlist_dst[_size] data buffer (array of zfs_useracct_t) 5555 * zc_cookie zap cursor 5556 */ 5557 static int 5558 zfs_ioc_userspace_many(zfs_cmd_t *zc) 5559 { 5560 zfsvfs_t *zfsvfs; 5561 int bufsize = zc->zc_nvlist_dst_size; 5562 5563 if (bufsize <= 0) 5564 return (SET_ERROR(ENOMEM)); 5565 5566 int error = zfsvfs_hold(zc->zc_name, FTAG, &zfsvfs, B_FALSE); 5567 if (error != 0) 5568 return (error); 5569 5570 void *buf = kmem_alloc(bufsize, KM_SLEEP); 5571 5572 error = zfs_userspace_many(zfsvfs, zc->zc_objset_type, &zc->zc_cookie, 5573 buf, &zc->zc_nvlist_dst_size); 5574 5575 if (error == 0) { 5576 error = xcopyout(buf, 5577 (void *)(uintptr_t)zc->zc_nvlist_dst, 5578 zc->zc_nvlist_dst_size); 5579 } 5580 kmem_free(buf, bufsize); 5581 zfsvfs_rele(zfsvfs, FTAG); 5582 5583 return (error); 5584 } 5585 5586 /* 5587 * inputs: 5588 * zc_name name of filesystem 5589 * 5590 * outputs: 5591 * none 5592 */ 5593 static int 5594 zfs_ioc_userspace_upgrade(zfs_cmd_t *zc) 5595 { 5596 objset_t *os; 5597 int error = 0; 5598 zfsvfs_t *zfsvfs; 5599 5600 if (getzfsvfs(zc->zc_name, &zfsvfs) == 0) { 5601 if (!dmu_objset_userused_enabled(zfsvfs->z_os)) { 5602 /* 5603 * If userused is not enabled, it may be because the 5604 * objset needs to be closed & reopened (to grow the 5605 * objset_phys_t). Suspend/resume the fs will do that. 5606 */ 5607 dsl_dataset_t *ds, *newds; 5608 5609 ds = dmu_objset_ds(zfsvfs->z_os); 5610 error = zfs_suspend_fs(zfsvfs); 5611 if (error == 0) { 5612 dmu_objset_refresh_ownership(ds, &newds, 5613 B_TRUE, zfsvfs); 5614 error = zfs_resume_fs(zfsvfs, newds); 5615 } 5616 } 5617 if (error == 0) 5618 error = dmu_objset_userspace_upgrade(zfsvfs->z_os); 5619 VFS_RELE(zfsvfs->z_vfs); 5620 } else { 5621 /* XXX kind of reading contents without owning */ 5622 error = dmu_objset_hold_flags(zc->zc_name, B_TRUE, FTAG, &os); 5623 if (error != 0) 5624 return (error); 5625 5626 error = dmu_objset_userspace_upgrade(os); 5627 dmu_objset_rele_flags(os, B_TRUE, FTAG); 5628 } 5629 5630 return (error); 5631 } 5632 5633 /* 5634 * inputs: 5635 * zc_name name of filesystem 5636 * 5637 * outputs: 5638 * none 5639 */ 5640 static int 5641 zfs_ioc_id_quota_upgrade(zfs_cmd_t *zc) 5642 { 5643 objset_t *os; 5644 int error; 5645 5646 error = dmu_objset_hold(zc->zc_name, FTAG, &os); 5647 if (error != 0) 5648 return (error); 5649 5650 if (dmu_objset_userobjspace_upgradable(os) || 5651 dmu_objset_projectquota_upgradable(os)) { 5652 mutex_enter(&os->os_upgrade_lock); 5653 if (os->os_upgrade_id == 0) { 5654 /* clear potential error code and retry */ 5655 os->os_upgrade_status = 0; 5656 mutex_exit(&os->os_upgrade_lock); 5657 5658 dmu_objset_id_quota_upgrade(os); 5659 } else { 5660 mutex_exit(&os->os_upgrade_lock); 5661 } 5662 5663 dsl_pool_rele(dmu_objset_pool(os), FTAG); 5664 5665 taskq_wait_id(os->os_spa->spa_upgrade_taskq, os->os_upgrade_id); 5666 error = os->os_upgrade_status; 5667 } else { 5668 dsl_pool_rele(dmu_objset_pool(os), FTAG); 5669 } 5670 5671 dsl_dataset_rele(dmu_objset_ds(os), FTAG); 5672 5673 return (error); 5674 } 5675 5676 /* 5677 * We don't want to have a hard dependency 5678 * against some special symbols in sharefs 5679 * nfs, and smbsrv. Determine them if needed when 5680 * the first file system is shared. 5681 * Neither sharefs, nfs or smbsrv are unloadable modules. 5682 */ 5683 int (*znfsexport_fs)(void *arg); 5684 int (*zshare_fs)(enum sharefs_sys_op, share_t *, uint32_t); 5685 int (*zsmbexport_fs)(void *arg, boolean_t add_share); 5686 5687 int zfs_nfsshare_inited; 5688 int zfs_smbshare_inited; 5689 5690 ddi_modhandle_t nfs_mod; 5691 ddi_modhandle_t sharefs_mod; 5692 ddi_modhandle_t smbsrv_mod; 5693 kmutex_t zfs_share_lock; 5694 5695 static int 5696 zfs_init_sharefs() 5697 { 5698 int error; 5699 5700 ASSERT(MUTEX_HELD(&zfs_share_lock)); 5701 /* Both NFS and SMB shares also require sharetab support. */ 5702 if (sharefs_mod == NULL && ((sharefs_mod = 5703 ddi_modopen("fs/sharefs", 5704 KRTLD_MODE_FIRST, &error)) == NULL)) { 5705 return (SET_ERROR(ENOSYS)); 5706 } 5707 if (zshare_fs == NULL && ((zshare_fs = 5708 (int (*)(enum sharefs_sys_op, share_t *, uint32_t)) 5709 ddi_modsym(sharefs_mod, "sharefs_impl", &error)) == NULL)) { 5710 return (SET_ERROR(ENOSYS)); 5711 } 5712 return (0); 5713 } 5714 5715 static int 5716 zfs_ioc_share(zfs_cmd_t *zc) 5717 { 5718 int error; 5719 int opcode; 5720 5721 switch (zc->zc_share.z_sharetype) { 5722 case ZFS_SHARE_NFS: 5723 case ZFS_UNSHARE_NFS: 5724 if (zfs_nfsshare_inited == 0) { 5725 mutex_enter(&zfs_share_lock); 5726 if (nfs_mod == NULL && ((nfs_mod = ddi_modopen("fs/nfs", 5727 KRTLD_MODE_FIRST, &error)) == NULL)) { 5728 mutex_exit(&zfs_share_lock); 5729 return (SET_ERROR(ENOSYS)); 5730 } 5731 if (znfsexport_fs == NULL && 5732 ((znfsexport_fs = (int (*)(void *)) 5733 ddi_modsym(nfs_mod, 5734 "nfs_export", &error)) == NULL)) { 5735 mutex_exit(&zfs_share_lock); 5736 return (SET_ERROR(ENOSYS)); 5737 } 5738 error = zfs_init_sharefs(); 5739 if (error != 0) { 5740 mutex_exit(&zfs_share_lock); 5741 return (SET_ERROR(ENOSYS)); 5742 } 5743 zfs_nfsshare_inited = 1; 5744 mutex_exit(&zfs_share_lock); 5745 } 5746 break; 5747 case ZFS_SHARE_SMB: 5748 case ZFS_UNSHARE_SMB: 5749 if (zfs_smbshare_inited == 0) { 5750 mutex_enter(&zfs_share_lock); 5751 if (smbsrv_mod == NULL && ((smbsrv_mod = 5752 ddi_modopen("drv/smbsrv", 5753 KRTLD_MODE_FIRST, &error)) == NULL)) { 5754 mutex_exit(&zfs_share_lock); 5755 return (SET_ERROR(ENOSYS)); 5756 } 5757 if (zsmbexport_fs == NULL && ((zsmbexport_fs = 5758 (int (*)(void *, boolean_t))ddi_modsym(smbsrv_mod, 5759 "smb_server_share", &error)) == NULL)) { 5760 mutex_exit(&zfs_share_lock); 5761 return (SET_ERROR(ENOSYS)); 5762 } 5763 error = zfs_init_sharefs(); 5764 if (error != 0) { 5765 mutex_exit(&zfs_share_lock); 5766 return (SET_ERROR(ENOSYS)); 5767 } 5768 zfs_smbshare_inited = 1; 5769 mutex_exit(&zfs_share_lock); 5770 } 5771 break; 5772 default: 5773 return (SET_ERROR(EINVAL)); 5774 } 5775 5776 switch (zc->zc_share.z_sharetype) { 5777 case ZFS_SHARE_NFS: 5778 case ZFS_UNSHARE_NFS: 5779 if (error = 5780 znfsexport_fs((void *) 5781 (uintptr_t)zc->zc_share.z_exportdata)) 5782 return (error); 5783 break; 5784 case ZFS_SHARE_SMB: 5785 case ZFS_UNSHARE_SMB: 5786 if (error = zsmbexport_fs((void *) 5787 (uintptr_t)zc->zc_share.z_exportdata, 5788 zc->zc_share.z_sharetype == ZFS_SHARE_SMB ? 5789 B_TRUE: B_FALSE)) { 5790 return (error); 5791 } 5792 break; 5793 } 5794 5795 opcode = (zc->zc_share.z_sharetype == ZFS_SHARE_NFS || 5796 zc->zc_share.z_sharetype == ZFS_SHARE_SMB) ? 5797 SHAREFS_ADD : SHAREFS_REMOVE; 5798 5799 /* 5800 * Add or remove share from sharetab 5801 */ 5802 error = zshare_fs(opcode, 5803 (void *)(uintptr_t)zc->zc_share.z_sharedata, 5804 zc->zc_share.z_sharemax); 5805 5806 return (error); 5807 5808 } 5809 5810 ace_t full_access[] = { 5811 {(uid_t)-1, ACE_ALL_PERMS, ACE_EVERYONE, 0} 5812 }; 5813 5814 /* 5815 * inputs: 5816 * zc_name name of containing filesystem 5817 * zc_obj object # beyond which we want next in-use object # 5818 * 5819 * outputs: 5820 * zc_obj next in-use object # 5821 */ 5822 static int 5823 zfs_ioc_next_obj(zfs_cmd_t *zc) 5824 { 5825 objset_t *os = NULL; 5826 int error; 5827 5828 error = dmu_objset_hold(zc->zc_name, FTAG, &os); 5829 if (error != 0) 5830 return (error); 5831 5832 error = dmu_object_next(os, &zc->zc_obj, B_FALSE, 5833 dsl_dataset_phys(os->os_dsl_dataset)->ds_prev_snap_txg); 5834 5835 dmu_objset_rele(os, FTAG); 5836 return (error); 5837 } 5838 5839 /* 5840 * inputs: 5841 * zc_name name of filesystem 5842 * zc_value prefix name for snapshot 5843 * zc_cleanup_fd cleanup-on-exit file descriptor for calling process 5844 * 5845 * outputs: 5846 * zc_value short name of new snapshot 5847 */ 5848 static int 5849 zfs_ioc_tmp_snapshot(zfs_cmd_t *zc) 5850 { 5851 char *snap_name; 5852 char *hold_name; 5853 int error; 5854 minor_t minor; 5855 5856 error = zfs_onexit_fd_hold(zc->zc_cleanup_fd, &minor); 5857 if (error != 0) 5858 return (error); 5859 5860 snap_name = kmem_asprintf("%s-%016llx", zc->zc_value, 5861 (u_longlong_t)ddi_get_lbolt64()); 5862 hold_name = kmem_asprintf("%%%s", zc->zc_value); 5863 5864 error = dsl_dataset_snapshot_tmp(zc->zc_name, snap_name, minor, 5865 hold_name); 5866 if (error == 0) 5867 (void) strcpy(zc->zc_value, snap_name); 5868 strfree(snap_name); 5869 strfree(hold_name); 5870 zfs_onexit_fd_rele(zc->zc_cleanup_fd); 5871 return (error); 5872 } 5873 5874 /* 5875 * inputs: 5876 * zc_name name of "to" snapshot 5877 * zc_value name of "from" snapshot 5878 * zc_cookie file descriptor to write diff data on 5879 * 5880 * outputs: 5881 * dmu_diff_record_t's to the file descriptor 5882 */ 5883 static int 5884 zfs_ioc_diff(zfs_cmd_t *zc) 5885 { 5886 file_t *fp; 5887 offset_t off; 5888 int error; 5889 5890 fp = getf(zc->zc_cookie); 5891 if (fp == NULL) 5892 return (SET_ERROR(EBADF)); 5893 5894 off = fp->f_offset; 5895 5896 error = dmu_diff(zc->zc_name, zc->zc_value, fp->f_vnode, &off); 5897 5898 if (VOP_SEEK(fp->f_vnode, fp->f_offset, &off, NULL) == 0) 5899 fp->f_offset = off; 5900 releasef(zc->zc_cookie); 5901 5902 return (error); 5903 } 5904 5905 /* 5906 * Remove all ACL files in shares dir 5907 */ 5908 static int 5909 zfs_smb_acl_purge(znode_t *dzp) 5910 { 5911 zap_cursor_t zc; 5912 zap_attribute_t zap; 5913 zfsvfs_t *zfsvfs = dzp->z_zfsvfs; 5914 int error; 5915 5916 for (zap_cursor_init(&zc, zfsvfs->z_os, dzp->z_id); 5917 (error = zap_cursor_retrieve(&zc, &zap)) == 0; 5918 zap_cursor_advance(&zc)) { 5919 if ((error = VOP_REMOVE(ZTOV(dzp), zap.za_name, kcred, 5920 NULL, 0)) != 0) 5921 break; 5922 } 5923 zap_cursor_fini(&zc); 5924 return (error); 5925 } 5926 5927 static int 5928 zfs_ioc_smb_acl(zfs_cmd_t *zc) 5929 { 5930 vnode_t *vp; 5931 znode_t *dzp; 5932 vnode_t *resourcevp = NULL; 5933 znode_t *sharedir; 5934 zfsvfs_t *zfsvfs; 5935 nvlist_t *nvlist; 5936 char *src, *target; 5937 vattr_t vattr; 5938 vsecattr_t vsec; 5939 int error = 0; 5940 5941 if ((error = lookupname(zc->zc_value, UIO_SYSSPACE, 5942 NO_FOLLOW, NULL, &vp)) != 0) 5943 return (error); 5944 5945 /* Now make sure mntpnt and dataset are ZFS */ 5946 5947 if (vp->v_vfsp->vfs_fstype != zfsfstype || 5948 (strcmp((char *)refstr_value(vp->v_vfsp->vfs_resource), 5949 zc->zc_name) != 0)) { 5950 VN_RELE(vp); 5951 return (SET_ERROR(EINVAL)); 5952 } 5953 5954 dzp = VTOZ(vp); 5955 zfsvfs = dzp->z_zfsvfs; 5956 ZFS_ENTER(zfsvfs); 5957 5958 /* 5959 * Create share dir if its missing. 5960 */ 5961 mutex_enter(&zfsvfs->z_lock); 5962 if (zfsvfs->z_shares_dir == 0) { 5963 dmu_tx_t *tx; 5964 5965 tx = dmu_tx_create(zfsvfs->z_os); 5966 dmu_tx_hold_zap(tx, MASTER_NODE_OBJ, TRUE, 5967 ZFS_SHARES_DIR); 5968 dmu_tx_hold_zap(tx, DMU_NEW_OBJECT, FALSE, NULL); 5969 error = dmu_tx_assign(tx, TXG_WAIT); 5970 if (error != 0) { 5971 dmu_tx_abort(tx); 5972 } else { 5973 error = zfs_create_share_dir(zfsvfs, tx); 5974 dmu_tx_commit(tx); 5975 } 5976 if (error != 0) { 5977 mutex_exit(&zfsvfs->z_lock); 5978 VN_RELE(vp); 5979 ZFS_EXIT(zfsvfs); 5980 return (error); 5981 } 5982 } 5983 mutex_exit(&zfsvfs->z_lock); 5984 5985 ASSERT(zfsvfs->z_shares_dir); 5986 if ((error = zfs_zget(zfsvfs, zfsvfs->z_shares_dir, &sharedir)) != 0) { 5987 VN_RELE(vp); 5988 ZFS_EXIT(zfsvfs); 5989 return (error); 5990 } 5991 5992 switch (zc->zc_cookie) { 5993 case ZFS_SMB_ACL_ADD: 5994 vattr.va_mask = AT_MODE|AT_UID|AT_GID|AT_TYPE; 5995 vattr.va_type = VREG; 5996 vattr.va_mode = S_IFREG|0777; 5997 vattr.va_uid = 0; 5998 vattr.va_gid = 0; 5999 6000 vsec.vsa_mask = VSA_ACE; 6001 vsec.vsa_aclentp = &full_access; 6002 vsec.vsa_aclentsz = sizeof (full_access); 6003 vsec.vsa_aclcnt = 1; 6004 6005 error = VOP_CREATE(ZTOV(sharedir), zc->zc_string, 6006 &vattr, EXCL, 0, &resourcevp, kcred, 0, NULL, &vsec); 6007 if (resourcevp) 6008 VN_RELE(resourcevp); 6009 break; 6010 6011 case ZFS_SMB_ACL_REMOVE: 6012 error = VOP_REMOVE(ZTOV(sharedir), zc->zc_string, kcred, 6013 NULL, 0); 6014 break; 6015 6016 case ZFS_SMB_ACL_RENAME: 6017 if ((error = get_nvlist(zc->zc_nvlist_src, 6018 zc->zc_nvlist_src_size, zc->zc_iflags, &nvlist)) != 0) { 6019 VN_RELE(vp); 6020 VN_RELE(ZTOV(sharedir)); 6021 ZFS_EXIT(zfsvfs); 6022 return (error); 6023 } 6024 if (nvlist_lookup_string(nvlist, ZFS_SMB_ACL_SRC, &src) || 6025 nvlist_lookup_string(nvlist, ZFS_SMB_ACL_TARGET, 6026 &target)) { 6027 VN_RELE(vp); 6028 VN_RELE(ZTOV(sharedir)); 6029 ZFS_EXIT(zfsvfs); 6030 nvlist_free(nvlist); 6031 return (error); 6032 } 6033 error = VOP_RENAME(ZTOV(sharedir), src, ZTOV(sharedir), target, 6034 kcred, NULL, 0); 6035 nvlist_free(nvlist); 6036 break; 6037 6038 case ZFS_SMB_ACL_PURGE: 6039 error = zfs_smb_acl_purge(sharedir); 6040 break; 6041 6042 default: 6043 error = SET_ERROR(EINVAL); 6044 break; 6045 } 6046 6047 VN_RELE(vp); 6048 VN_RELE(ZTOV(sharedir)); 6049 6050 ZFS_EXIT(zfsvfs); 6051 6052 return (error); 6053 } 6054 6055 /* 6056 * innvl: { 6057 * "holds" -> { snapname -> holdname (string), ... } 6058 * (optional) "cleanup_fd" -> fd (int32) 6059 * } 6060 * 6061 * outnvl: { 6062 * snapname -> error value (int32) 6063 * ... 6064 * } 6065 */ 6066 static const zfs_ioc_key_t zfs_keys_hold[] = { 6067 {"holds", DATA_TYPE_NVLIST, 0}, 6068 {"cleanup_fd", DATA_TYPE_INT32, ZK_OPTIONAL}, 6069 }; 6070 6071 /* ARGSUSED */ 6072 static int 6073 zfs_ioc_hold(const char *pool, nvlist_t *args, nvlist_t *errlist) 6074 { 6075 nvpair_t *pair; 6076 nvlist_t *holds; 6077 int cleanup_fd = -1; 6078 int error; 6079 minor_t minor = 0; 6080 6081 holds = fnvlist_lookup_nvlist(args, "holds"); 6082 6083 /* make sure the user didn't pass us any invalid (empty) tags */ 6084 for (pair = nvlist_next_nvpair(holds, NULL); pair != NULL; 6085 pair = nvlist_next_nvpair(holds, pair)) { 6086 char *htag; 6087 6088 error = nvpair_value_string(pair, &htag); 6089 if (error != 0) 6090 return (SET_ERROR(error)); 6091 6092 if (strlen(htag) == 0) 6093 return (SET_ERROR(EINVAL)); 6094 } 6095 6096 if (nvlist_lookup_int32(args, "cleanup_fd", &cleanup_fd) == 0) { 6097 error = zfs_onexit_fd_hold(cleanup_fd, &minor); 6098 if (error != 0) 6099 return (error); 6100 } 6101 6102 error = dsl_dataset_user_hold(holds, minor, errlist); 6103 if (minor != 0) 6104 zfs_onexit_fd_rele(cleanup_fd); 6105 return (error); 6106 } 6107 6108 /* 6109 * innvl is not used. 6110 * 6111 * outnvl: { 6112 * holdname -> time added (uint64 seconds since epoch) 6113 * ... 6114 * } 6115 */ 6116 static const zfs_ioc_key_t zfs_keys_get_holds[] = { 6117 /* no nvl keys */ 6118 }; 6119 6120 /* ARGSUSED */ 6121 static int 6122 zfs_ioc_get_holds(const char *snapname, nvlist_t *args, nvlist_t *outnvl) 6123 { 6124 return (dsl_dataset_get_holds(snapname, outnvl)); 6125 } 6126 6127 /* 6128 * innvl: { 6129 * snapname -> { holdname, ... } 6130 * ... 6131 * } 6132 * 6133 * outnvl: { 6134 * snapname -> error value (int32) 6135 * ... 6136 * } 6137 */ 6138 static const zfs_ioc_key_t zfs_keys_release[] = { 6139 {"<snapname>...", DATA_TYPE_NVLIST, ZK_WILDCARDLIST}, 6140 }; 6141 6142 /* ARGSUSED */ 6143 static int 6144 zfs_ioc_release(const char *pool, nvlist_t *holds, nvlist_t *errlist) 6145 { 6146 return (dsl_dataset_user_release(holds, errlist)); 6147 } 6148 6149 /* 6150 * inputs: 6151 * zc_name name of new filesystem or snapshot 6152 * zc_value full name of old snapshot 6153 * 6154 * outputs: 6155 * zc_cookie space in bytes 6156 * zc_objset_type compressed space in bytes 6157 * zc_perm_action uncompressed space in bytes 6158 */ 6159 static int 6160 zfs_ioc_space_written(zfs_cmd_t *zc) 6161 { 6162 int error; 6163 dsl_pool_t *dp; 6164 dsl_dataset_t *new, *old; 6165 6166 error = dsl_pool_hold(zc->zc_name, FTAG, &dp); 6167 if (error != 0) 6168 return (error); 6169 error = dsl_dataset_hold(dp, zc->zc_name, FTAG, &new); 6170 if (error != 0) { 6171 dsl_pool_rele(dp, FTAG); 6172 return (error); 6173 } 6174 error = dsl_dataset_hold(dp, zc->zc_value, FTAG, &old); 6175 if (error != 0) { 6176 dsl_dataset_rele(new, FTAG); 6177 dsl_pool_rele(dp, FTAG); 6178 return (error); 6179 } 6180 6181 error = dsl_dataset_space_written(old, new, &zc->zc_cookie, 6182 &zc->zc_objset_type, &zc->zc_perm_action); 6183 dsl_dataset_rele(old, FTAG); 6184 dsl_dataset_rele(new, FTAG); 6185 dsl_pool_rele(dp, FTAG); 6186 return (error); 6187 } 6188 6189 /* 6190 * innvl: { 6191 * "firstsnap" -> snapshot name 6192 * } 6193 * 6194 * outnvl: { 6195 * "used" -> space in bytes 6196 * "compressed" -> compressed space in bytes 6197 * "uncompressed" -> uncompressed space in bytes 6198 * } 6199 */ 6200 static const zfs_ioc_key_t zfs_keys_space_snaps[] = { 6201 {"firstsnap", DATA_TYPE_STRING, 0}, 6202 }; 6203 6204 static int 6205 zfs_ioc_space_snaps(const char *lastsnap, nvlist_t *innvl, nvlist_t *outnvl) 6206 { 6207 int error; 6208 dsl_pool_t *dp; 6209 dsl_dataset_t *new, *old; 6210 char *firstsnap; 6211 uint64_t used, comp, uncomp; 6212 6213 firstsnap = fnvlist_lookup_string(innvl, "firstsnap"); 6214 6215 error = dsl_pool_hold(lastsnap, FTAG, &dp); 6216 if (error != 0) 6217 return (error); 6218 6219 error = dsl_dataset_hold(dp, lastsnap, FTAG, &new); 6220 if (error == 0 && !new->ds_is_snapshot) { 6221 dsl_dataset_rele(new, FTAG); 6222 error = SET_ERROR(EINVAL); 6223 } 6224 if (error != 0) { 6225 dsl_pool_rele(dp, FTAG); 6226 return (error); 6227 } 6228 error = dsl_dataset_hold(dp, firstsnap, FTAG, &old); 6229 if (error == 0 && !old->ds_is_snapshot) { 6230 dsl_dataset_rele(old, FTAG); 6231 error = SET_ERROR(EINVAL); 6232 } 6233 if (error != 0) { 6234 dsl_dataset_rele(new, FTAG); 6235 dsl_pool_rele(dp, FTAG); 6236 return (error); 6237 } 6238 6239 error = dsl_dataset_space_wouldfree(old, new, &used, &comp, &uncomp); 6240 dsl_dataset_rele(old, FTAG); 6241 dsl_dataset_rele(new, FTAG); 6242 dsl_pool_rele(dp, FTAG); 6243 fnvlist_add_uint64(outnvl, "used", used); 6244 fnvlist_add_uint64(outnvl, "compressed", comp); 6245 fnvlist_add_uint64(outnvl, "uncompressed", uncomp); 6246 return (error); 6247 } 6248 6249 /* 6250 * innvl: { 6251 * "fd" -> file descriptor to write stream to (int32) 6252 * (optional) "fromsnap" -> full snap name to send an incremental from 6253 * (optional) "largeblockok" -> (value ignored) 6254 * indicates that blocks > 128KB are permitted 6255 * (optional) "embedok" -> (value ignored) 6256 * presence indicates DRR_WRITE_EMBEDDED records are permitted 6257 * (optional) "compressok" -> (value ignored) 6258 * presence indicates compressed DRR_WRITE records are permitted 6259 * (optional) "rawok" -> (value ignored) 6260 * presence indicates raw encrypted records should be used. 6261 * (optional) "resume_object" and "resume_offset" -> (uint64) 6262 * if present, resume send stream from specified object and offset. 6263 * } 6264 * 6265 * outnvl is unused 6266 */ 6267 static const zfs_ioc_key_t zfs_keys_send_new[] = { 6268 {"fd", DATA_TYPE_INT32, 0}, 6269 {"fromsnap", DATA_TYPE_STRING, ZK_OPTIONAL}, 6270 {"largeblockok", DATA_TYPE_BOOLEAN, ZK_OPTIONAL}, 6271 {"embedok", DATA_TYPE_BOOLEAN, ZK_OPTIONAL}, 6272 {"compressok", DATA_TYPE_BOOLEAN, ZK_OPTIONAL}, 6273 {"rawok", DATA_TYPE_BOOLEAN, ZK_OPTIONAL}, 6274 {"resume_object", DATA_TYPE_UINT64, ZK_OPTIONAL}, 6275 {"resume_offset", DATA_TYPE_UINT64, ZK_OPTIONAL}, 6276 }; 6277 6278 /* ARGSUSED */ 6279 static int 6280 zfs_ioc_send_new(const char *snapname, nvlist_t *innvl, nvlist_t *outnvl) 6281 { 6282 int error; 6283 offset_t off; 6284 char *fromname = NULL; 6285 int fd; 6286 boolean_t largeblockok; 6287 boolean_t embedok; 6288 boolean_t compressok; 6289 boolean_t rawok; 6290 uint64_t resumeobj = 0; 6291 uint64_t resumeoff = 0; 6292 6293 fd = fnvlist_lookup_int32(innvl, "fd"); 6294 6295 (void) nvlist_lookup_string(innvl, "fromsnap", &fromname); 6296 6297 largeblockok = nvlist_exists(innvl, "largeblockok"); 6298 embedok = nvlist_exists(innvl, "embedok"); 6299 compressok = nvlist_exists(innvl, "compressok"); 6300 rawok = nvlist_exists(innvl, "rawok"); 6301 6302 (void) nvlist_lookup_uint64(innvl, "resume_object", &resumeobj); 6303 (void) nvlist_lookup_uint64(innvl, "resume_offset", &resumeoff); 6304 6305 file_t *fp = getf(fd); 6306 if (fp == NULL) 6307 return (SET_ERROR(EBADF)); 6308 6309 off = fp->f_offset; 6310 error = dmu_send(snapname, fromname, embedok, largeblockok, compressok, 6311 rawok, fd, resumeobj, resumeoff, fp->f_vnode, &off); 6312 6313 if (VOP_SEEK(fp->f_vnode, fp->f_offset, &off, NULL) == 0) 6314 fp->f_offset = off; 6315 releasef(fd); 6316 return (error); 6317 } 6318 6319 /* 6320 * Determine approximately how large a zfs send stream will be -- the number 6321 * of bytes that will be written to the fd supplied to zfs_ioc_send_new(). 6322 * 6323 * innvl: { 6324 * (optional) "from" -> full snap or bookmark name to send an incremental 6325 * from 6326 * (optional) "largeblockok" -> (value ignored) 6327 * indicates that blocks > 128KB are permitted 6328 * (optional) "embedok" -> (value ignored) 6329 * presence indicates DRR_WRITE_EMBEDDED records are permitted 6330 * (optional) "compressok" -> (value ignored) 6331 * presence indicates compressed DRR_WRITE records are permitted 6332 * } 6333 * 6334 * outnvl: { 6335 * "space" -> bytes of space (uint64) 6336 * } 6337 */ 6338 static const zfs_ioc_key_t zfs_keys_send_space[] = { 6339 {"from", DATA_TYPE_STRING, ZK_OPTIONAL}, 6340 {"fromsnap", DATA_TYPE_STRING, ZK_OPTIONAL}, 6341 {"largeblockok", DATA_TYPE_BOOLEAN, ZK_OPTIONAL}, 6342 {"embedok", DATA_TYPE_BOOLEAN, ZK_OPTIONAL}, 6343 {"compressok", DATA_TYPE_BOOLEAN, ZK_OPTIONAL}, 6344 {"rawok", DATA_TYPE_BOOLEAN, ZK_OPTIONAL}, 6345 }; 6346 6347 static int 6348 zfs_ioc_send_space(const char *snapname, nvlist_t *innvl, nvlist_t *outnvl) 6349 { 6350 dsl_pool_t *dp; 6351 dsl_dataset_t *tosnap; 6352 int error; 6353 char *fromname; 6354 boolean_t compressok; 6355 boolean_t rawok; 6356 uint64_t space; 6357 6358 error = dsl_pool_hold(snapname, FTAG, &dp); 6359 if (error != 0) 6360 return (error); 6361 6362 error = dsl_dataset_hold(dp, snapname, FTAG, &tosnap); 6363 if (error != 0) { 6364 dsl_pool_rele(dp, FTAG); 6365 return (error); 6366 } 6367 6368 compressok = nvlist_exists(innvl, "compressok"); 6369 rawok = nvlist_exists(innvl, "rawok"); 6370 6371 error = nvlist_lookup_string(innvl, "from", &fromname); 6372 if (error == 0) { 6373 if (strchr(fromname, '@') != NULL) { 6374 /* 6375 * If from is a snapshot, hold it and use the more 6376 * efficient dmu_send_estimate to estimate send space 6377 * size using deadlists. 6378 */ 6379 dsl_dataset_t *fromsnap; 6380 error = dsl_dataset_hold(dp, fromname, FTAG, &fromsnap); 6381 if (error != 0) 6382 goto out; 6383 error = dmu_send_estimate(tosnap, fromsnap, 6384 compressok || rawok, &space); 6385 dsl_dataset_rele(fromsnap, FTAG); 6386 } else if (strchr(fromname, '#') != NULL) { 6387 /* 6388 * If from is a bookmark, fetch the creation TXG of the 6389 * snapshot it was created from and use that to find 6390 * blocks that were born after it. 6391 */ 6392 zfs_bookmark_phys_t frombm; 6393 6394 error = dsl_bookmark_lookup(dp, fromname, tosnap, 6395 &frombm); 6396 if (error != 0) 6397 goto out; 6398 error = dmu_send_estimate_from_txg(tosnap, 6399 frombm.zbm_creation_txg, compressok || rawok, 6400 &space); 6401 } else { 6402 /* 6403 * from is not properly formatted as a snapshot or 6404 * bookmark 6405 */ 6406 error = SET_ERROR(EINVAL); 6407 goto out; 6408 } 6409 } else { 6410 /* 6411 * If estimating the size of a full send, use dmu_send_estimate. 6412 */ 6413 error = dmu_send_estimate(tosnap, NULL, compressok || rawok, 6414 &space); 6415 } 6416 6417 fnvlist_add_uint64(outnvl, "space", space); 6418 6419 out: 6420 dsl_dataset_rele(tosnap, FTAG); 6421 dsl_pool_rele(dp, FTAG); 6422 return (error); 6423 } 6424 6425 /* 6426 * Sync the currently open TXG to disk for the specified pool. 6427 * This is somewhat similar to 'zfs_sync()'. 6428 * For cases that do not result in error this ioctl will wait for 6429 * the currently open TXG to commit before returning back to the caller. 6430 * 6431 * innvl: { 6432 * "force" -> when true, force uberblock update even if there is no dirty data. 6433 * In addition this will cause the vdev configuration to be written 6434 * out including updating the zpool cache file. (boolean_t) 6435 * } 6436 * 6437 * onvl is unused 6438 */ 6439 static const zfs_ioc_key_t zfs_keys_pool_sync[] = { 6440 {"force", DATA_TYPE_BOOLEAN_VALUE, 0}, 6441 }; 6442 6443 /* ARGSUSED */ 6444 static int 6445 zfs_ioc_pool_sync(const char *pool, nvlist_t *innvl, nvlist_t *onvl) 6446 { 6447 int err; 6448 boolean_t force = B_FALSE; 6449 spa_t *spa; 6450 6451 if ((err = spa_open(pool, &spa, FTAG)) != 0) 6452 return (err); 6453 6454 if (innvl) 6455 force = fnvlist_lookup_boolean_value(innvl, "force"); 6456 6457 if (force) { 6458 spa_config_enter(spa, SCL_CONFIG, FTAG, RW_WRITER); 6459 vdev_config_dirty(spa->spa_root_vdev); 6460 spa_config_exit(spa, SCL_CONFIG, FTAG); 6461 } 6462 txg_wait_synced(spa_get_dsl(spa), 0); 6463 6464 spa_close(spa, FTAG); 6465 6466 return (err); 6467 } 6468 6469 /* 6470 * Load a user's wrapping key into the kernel. 6471 * innvl: { 6472 * "hidden_args" -> { "wkeydata" -> value } 6473 * raw uint8_t array of encryption wrapping key data (32 bytes) 6474 * (optional) "noop" -> (value ignored) 6475 * presence indicated key should only be verified, not loaded 6476 * } 6477 */ 6478 static const zfs_ioc_key_t zfs_keys_load_key[] = { 6479 {"hidden_args", DATA_TYPE_NVLIST, 0}, 6480 {"noop", DATA_TYPE_BOOLEAN, ZK_OPTIONAL}, 6481 }; 6482 6483 /* ARGSUSED */ 6484 static int 6485 zfs_ioc_load_key(const char *dsname, nvlist_t *innvl, nvlist_t *outnvl) 6486 { 6487 int ret = 0; 6488 dsl_crypto_params_t *dcp = NULL; 6489 nvlist_t *hidden_args; 6490 boolean_t noop = nvlist_exists(innvl, "noop"); 6491 6492 if (strchr(dsname, '@') != NULL || strchr(dsname, '%') != NULL) { 6493 ret = SET_ERROR(EINVAL); 6494 goto error; 6495 } 6496 6497 hidden_args = fnvlist_lookup_nvlist(innvl, ZPOOL_HIDDEN_ARGS); 6498 6499 ret = dsl_crypto_params_create_nvlist(DCP_CMD_NONE, NULL, 6500 hidden_args, &dcp); 6501 if (ret != 0) 6502 goto error; 6503 6504 ret = spa_keystore_load_wkey(dsname, dcp, noop); 6505 if (ret != 0) 6506 goto error; 6507 6508 dsl_crypto_params_free(dcp, noop); 6509 6510 return (0); 6511 6512 error: 6513 dsl_crypto_params_free(dcp, B_TRUE); 6514 return (ret); 6515 } 6516 6517 /* 6518 * Unload a user's wrapping key from the kernel. 6519 * Both innvl and outnvl are unused. 6520 */ 6521 static const zfs_ioc_key_t zfs_keys_unload_key[] = { 6522 /* no nvl keys */ 6523 }; 6524 6525 /* ARGSUSED */ 6526 static int 6527 zfs_ioc_unload_key(const char *dsname, nvlist_t *innvl, nvlist_t *outnvl) 6528 { 6529 int ret = 0; 6530 6531 if (strchr(dsname, '@') != NULL || strchr(dsname, '%') != NULL) { 6532 ret = (SET_ERROR(EINVAL)); 6533 goto out; 6534 } 6535 6536 ret = spa_keystore_unload_wkey(dsname); 6537 if (ret != 0) 6538 goto out; 6539 6540 out: 6541 return (ret); 6542 } 6543 6544 /* 6545 * Changes a user's wrapping key used to decrypt a dataset. The keyformat, 6546 * keylocation, pbkdf2salt, and pbkdf2iters properties can also be specified 6547 * here to change how the key is derived in userspace. 6548 * 6549 * innvl: { 6550 * "hidden_args" (optional) -> { "wkeydata" -> value } 6551 * raw uint8_t array of new encryption wrapping key data (32 bytes) 6552 * "props" (optional) -> { prop -> value } 6553 * } 6554 * 6555 * outnvl is unused 6556 */ 6557 static const zfs_ioc_key_t zfs_keys_change_key[] = { 6558 {"crypt_cmd", DATA_TYPE_UINT64, ZK_OPTIONAL}, 6559 {"hidden_args", DATA_TYPE_NVLIST, ZK_OPTIONAL}, 6560 {"props", DATA_TYPE_NVLIST, ZK_OPTIONAL}, 6561 }; 6562 6563 /* ARGSUSED */ 6564 static int 6565 zfs_ioc_change_key(const char *dsname, nvlist_t *innvl, nvlist_t *outnvl) 6566 { 6567 int ret; 6568 uint64_t cmd = DCP_CMD_NONE; 6569 dsl_crypto_params_t *dcp = NULL; 6570 nvlist_t *args = NULL, *hidden_args = NULL; 6571 6572 if (strchr(dsname, '@') != NULL || strchr(dsname, '%') != NULL) { 6573 ret = (SET_ERROR(EINVAL)); 6574 goto error; 6575 } 6576 6577 (void) nvlist_lookup_uint64(innvl, "crypt_cmd", &cmd); 6578 (void) nvlist_lookup_nvlist(innvl, "props", &args); 6579 (void) nvlist_lookup_nvlist(innvl, ZPOOL_HIDDEN_ARGS, &hidden_args); 6580 6581 ret = dsl_crypto_params_create_nvlist(cmd, args, hidden_args, &dcp); 6582 if (ret != 0) 6583 goto error; 6584 6585 ret = spa_keystore_change_key(dsname, dcp); 6586 if (ret != 0) 6587 goto error; 6588 6589 dsl_crypto_params_free(dcp, B_FALSE); 6590 6591 return (0); 6592 6593 error: 6594 dsl_crypto_params_free(dcp, B_TRUE); 6595 return (ret); 6596 } 6597 6598 static zfs_ioc_vec_t zfs_ioc_vec[ZFS_IOC_LAST - ZFS_IOC_FIRST]; 6599 6600 static void 6601 zfs_ioctl_register_legacy(zfs_ioc_t ioc, zfs_ioc_legacy_func_t *func, 6602 zfs_secpolicy_func_t *secpolicy, zfs_ioc_namecheck_t namecheck, 6603 boolean_t log_history, zfs_ioc_poolcheck_t pool_check) 6604 { 6605 zfs_ioc_vec_t *vec = &zfs_ioc_vec[ioc - ZFS_IOC_FIRST]; 6606 6607 ASSERT3U(ioc, >=, ZFS_IOC_FIRST); 6608 ASSERT3U(ioc, <, ZFS_IOC_LAST); 6609 ASSERT3P(vec->zvec_legacy_func, ==, NULL); 6610 ASSERT3P(vec->zvec_func, ==, NULL); 6611 6612 vec->zvec_legacy_func = func; 6613 vec->zvec_secpolicy = secpolicy; 6614 vec->zvec_namecheck = namecheck; 6615 vec->zvec_allow_log = log_history; 6616 vec->zvec_pool_check = pool_check; 6617 } 6618 6619 /* 6620 * See the block comment at the beginning of this file for details on 6621 * each argument to this function. 6622 */ 6623 static void 6624 zfs_ioctl_register(const char *name, zfs_ioc_t ioc, zfs_ioc_func_t *func, 6625 zfs_secpolicy_func_t *secpolicy, zfs_ioc_namecheck_t namecheck, 6626 zfs_ioc_poolcheck_t pool_check, boolean_t smush_outnvlist, 6627 boolean_t allow_log, const zfs_ioc_key_t *nvl_keys, size_t num_keys) 6628 { 6629 zfs_ioc_vec_t *vec = &zfs_ioc_vec[ioc - ZFS_IOC_FIRST]; 6630 6631 ASSERT3U(ioc, >=, ZFS_IOC_FIRST); 6632 ASSERT3U(ioc, <, ZFS_IOC_LAST); 6633 ASSERT3P(vec->zvec_legacy_func, ==, NULL); 6634 ASSERT3P(vec->zvec_func, ==, NULL); 6635 6636 /* if we are logging, the name must be valid */ 6637 ASSERT(!allow_log || namecheck != NO_NAME); 6638 6639 vec->zvec_name = name; 6640 vec->zvec_func = func; 6641 vec->zvec_secpolicy = secpolicy; 6642 vec->zvec_namecheck = namecheck; 6643 vec->zvec_pool_check = pool_check; 6644 vec->zvec_smush_outnvlist = smush_outnvlist; 6645 vec->zvec_allow_log = allow_log; 6646 vec->zvec_nvl_keys = nvl_keys; 6647 vec->zvec_nvl_key_count = num_keys; 6648 } 6649 6650 static void 6651 zfs_ioctl_register_pool(zfs_ioc_t ioc, zfs_ioc_legacy_func_t *func, 6652 zfs_secpolicy_func_t *secpolicy, boolean_t log_history, 6653 zfs_ioc_poolcheck_t pool_check) 6654 { 6655 zfs_ioctl_register_legacy(ioc, func, secpolicy, 6656 POOL_NAME, log_history, pool_check); 6657 } 6658 6659 static void 6660 zfs_ioctl_register_dataset_nolog(zfs_ioc_t ioc, zfs_ioc_legacy_func_t *func, 6661 zfs_secpolicy_func_t *secpolicy, zfs_ioc_poolcheck_t pool_check) 6662 { 6663 zfs_ioctl_register_legacy(ioc, func, secpolicy, 6664 DATASET_NAME, B_FALSE, pool_check); 6665 } 6666 6667 static void 6668 zfs_ioctl_register_pool_modify(zfs_ioc_t ioc, zfs_ioc_legacy_func_t *func) 6669 { 6670 zfs_ioctl_register_legacy(ioc, func, zfs_secpolicy_config, 6671 POOL_NAME, B_TRUE, POOL_CHECK_SUSPENDED | POOL_CHECK_READONLY); 6672 } 6673 6674 static void 6675 zfs_ioctl_register_pool_meta(zfs_ioc_t ioc, zfs_ioc_legacy_func_t *func, 6676 zfs_secpolicy_func_t *secpolicy) 6677 { 6678 zfs_ioctl_register_legacy(ioc, func, secpolicy, 6679 NO_NAME, B_FALSE, POOL_CHECK_NONE); 6680 } 6681 6682 static void 6683 zfs_ioctl_register_dataset_read_secpolicy(zfs_ioc_t ioc, 6684 zfs_ioc_legacy_func_t *func, zfs_secpolicy_func_t *secpolicy) 6685 { 6686 zfs_ioctl_register_legacy(ioc, func, secpolicy, 6687 DATASET_NAME, B_FALSE, POOL_CHECK_SUSPENDED); 6688 } 6689 6690 static void 6691 zfs_ioctl_register_dataset_read(zfs_ioc_t ioc, zfs_ioc_legacy_func_t *func) 6692 { 6693 zfs_ioctl_register_dataset_read_secpolicy(ioc, func, 6694 zfs_secpolicy_read); 6695 } 6696 6697 static void 6698 zfs_ioctl_register_dataset_modify(zfs_ioc_t ioc, zfs_ioc_legacy_func_t *func, 6699 zfs_secpolicy_func_t *secpolicy) 6700 { 6701 zfs_ioctl_register_legacy(ioc, func, secpolicy, 6702 DATASET_NAME, B_TRUE, POOL_CHECK_SUSPENDED | POOL_CHECK_READONLY); 6703 } 6704 6705 static void 6706 zfs_ioctl_init(void) 6707 { 6708 zfs_ioctl_register("snapshot", ZFS_IOC_SNAPSHOT, 6709 zfs_ioc_snapshot, zfs_secpolicy_snapshot, POOL_NAME, 6710 POOL_CHECK_SUSPENDED | POOL_CHECK_READONLY, B_TRUE, B_TRUE, 6711 zfs_keys_snapshot, ARRAY_SIZE(zfs_keys_snapshot)); 6712 6713 zfs_ioctl_register("log_history", ZFS_IOC_LOG_HISTORY, 6714 zfs_ioc_log_history, zfs_secpolicy_log_history, NO_NAME, 6715 POOL_CHECK_SUSPENDED | POOL_CHECK_READONLY, B_FALSE, B_FALSE, 6716 zfs_keys_log_history, ARRAY_SIZE(zfs_keys_log_history)); 6717 6718 zfs_ioctl_register("space_snaps", ZFS_IOC_SPACE_SNAPS, 6719 zfs_ioc_space_snaps, zfs_secpolicy_read, DATASET_NAME, 6720 POOL_CHECK_SUSPENDED, B_FALSE, B_FALSE, 6721 zfs_keys_space_snaps, ARRAY_SIZE(zfs_keys_space_snaps)); 6722 6723 zfs_ioctl_register("send", ZFS_IOC_SEND_NEW, 6724 zfs_ioc_send_new, zfs_secpolicy_send_new, DATASET_NAME, 6725 POOL_CHECK_SUSPENDED, B_FALSE, B_FALSE, 6726 zfs_keys_send_new, ARRAY_SIZE(zfs_keys_send_new)); 6727 6728 zfs_ioctl_register("send_space", ZFS_IOC_SEND_SPACE, 6729 zfs_ioc_send_space, zfs_secpolicy_read, DATASET_NAME, 6730 POOL_CHECK_SUSPENDED, B_FALSE, B_FALSE, 6731 zfs_keys_send_space, ARRAY_SIZE(zfs_keys_send_space)); 6732 6733 zfs_ioctl_register("create", ZFS_IOC_CREATE, 6734 zfs_ioc_create, zfs_secpolicy_create_clone, DATASET_NAME, 6735 POOL_CHECK_SUSPENDED | POOL_CHECK_READONLY, B_TRUE, B_TRUE, 6736 zfs_keys_create, ARRAY_SIZE(zfs_keys_create)); 6737 6738 zfs_ioctl_register("clone", ZFS_IOC_CLONE, 6739 zfs_ioc_clone, zfs_secpolicy_create_clone, DATASET_NAME, 6740 POOL_CHECK_SUSPENDED | POOL_CHECK_READONLY, B_TRUE, B_TRUE, 6741 zfs_keys_clone, ARRAY_SIZE(zfs_keys_clone)); 6742 6743 zfs_ioctl_register("remap", ZFS_IOC_REMAP, 6744 zfs_ioc_remap, zfs_secpolicy_remap, DATASET_NAME, 6745 POOL_CHECK_SUSPENDED | POOL_CHECK_READONLY, B_FALSE, B_TRUE, 6746 zfs_keys_remap, ARRAY_SIZE(zfs_keys_remap)); 6747 6748 zfs_ioctl_register("destroy_snaps", ZFS_IOC_DESTROY_SNAPS, 6749 zfs_ioc_destroy_snaps, zfs_secpolicy_destroy_snaps, POOL_NAME, 6750 POOL_CHECK_SUSPENDED | POOL_CHECK_READONLY, B_TRUE, B_TRUE, 6751 zfs_keys_destroy_snaps, ARRAY_SIZE(zfs_keys_destroy_snaps)); 6752 6753 zfs_ioctl_register("hold", ZFS_IOC_HOLD, 6754 zfs_ioc_hold, zfs_secpolicy_hold, POOL_NAME, 6755 POOL_CHECK_SUSPENDED | POOL_CHECK_READONLY, B_TRUE, B_TRUE, 6756 zfs_keys_hold, ARRAY_SIZE(zfs_keys_hold)); 6757 zfs_ioctl_register("release", ZFS_IOC_RELEASE, 6758 zfs_ioc_release, zfs_secpolicy_release, POOL_NAME, 6759 POOL_CHECK_SUSPENDED | POOL_CHECK_READONLY, B_TRUE, B_TRUE, 6760 zfs_keys_release, ARRAY_SIZE(zfs_keys_release)); 6761 6762 zfs_ioctl_register("get_holds", ZFS_IOC_GET_HOLDS, 6763 zfs_ioc_get_holds, zfs_secpolicy_read, DATASET_NAME, 6764 POOL_CHECK_SUSPENDED, B_FALSE, B_FALSE, 6765 zfs_keys_get_holds, ARRAY_SIZE(zfs_keys_get_holds)); 6766 6767 zfs_ioctl_register("rollback", ZFS_IOC_ROLLBACK, 6768 zfs_ioc_rollback, zfs_secpolicy_rollback, DATASET_NAME, 6769 POOL_CHECK_SUSPENDED | POOL_CHECK_READONLY, B_FALSE, B_TRUE, 6770 zfs_keys_rollback, ARRAY_SIZE(zfs_keys_rollback)); 6771 6772 zfs_ioctl_register("bookmark", ZFS_IOC_BOOKMARK, 6773 zfs_ioc_bookmark, zfs_secpolicy_bookmark, POOL_NAME, 6774 POOL_CHECK_SUSPENDED | POOL_CHECK_READONLY, B_TRUE, B_TRUE, 6775 zfs_keys_bookmark, ARRAY_SIZE(zfs_keys_bookmark)); 6776 6777 zfs_ioctl_register("get_bookmarks", ZFS_IOC_GET_BOOKMARKS, 6778 zfs_ioc_get_bookmarks, zfs_secpolicy_read, DATASET_NAME, 6779 POOL_CHECK_SUSPENDED, B_FALSE, B_FALSE, 6780 zfs_keys_get_bookmarks, ARRAY_SIZE(zfs_keys_get_bookmarks)); 6781 6782 zfs_ioctl_register("destroy_bookmarks", ZFS_IOC_DESTROY_BOOKMARKS, 6783 zfs_ioc_destroy_bookmarks, zfs_secpolicy_destroy_bookmarks, 6784 POOL_NAME, 6785 POOL_CHECK_SUSPENDED | POOL_CHECK_READONLY, B_TRUE, B_TRUE, 6786 zfs_keys_destroy_bookmarks, 6787 ARRAY_SIZE(zfs_keys_destroy_bookmarks)); 6788 6789 zfs_ioctl_register("load-key", ZFS_IOC_LOAD_KEY, 6790 zfs_ioc_load_key, zfs_secpolicy_load_key, 6791 DATASET_NAME, POOL_CHECK_SUSPENDED, B_TRUE, B_TRUE, 6792 zfs_keys_load_key, ARRAY_SIZE(zfs_keys_load_key)); 6793 zfs_ioctl_register("unload-key", ZFS_IOC_UNLOAD_KEY, 6794 zfs_ioc_unload_key, zfs_secpolicy_load_key, 6795 DATASET_NAME, POOL_CHECK_SUSPENDED, B_TRUE, B_TRUE, 6796 zfs_keys_unload_key, ARRAY_SIZE(zfs_keys_unload_key)); 6797 zfs_ioctl_register("change-key", ZFS_IOC_CHANGE_KEY, 6798 zfs_ioc_change_key, zfs_secpolicy_change_key, 6799 DATASET_NAME, POOL_CHECK_SUSPENDED | POOL_CHECK_READONLY, 6800 B_TRUE, B_TRUE, zfs_keys_change_key, 6801 ARRAY_SIZE(zfs_keys_change_key)); 6802 6803 zfs_ioctl_register("sync", ZFS_IOC_POOL_SYNC, 6804 zfs_ioc_pool_sync, zfs_secpolicy_none, POOL_NAME, 6805 POOL_CHECK_SUSPENDED | POOL_CHECK_READONLY, B_FALSE, B_FALSE, 6806 zfs_keys_pool_sync, ARRAY_SIZE(zfs_keys_pool_sync)); 6807 6808 zfs_ioctl_register("channel_program", ZFS_IOC_CHANNEL_PROGRAM, 6809 zfs_ioc_channel_program, zfs_secpolicy_config, 6810 POOL_NAME, POOL_CHECK_SUSPENDED | POOL_CHECK_READONLY, B_TRUE, 6811 B_TRUE, zfs_keys_channel_program, 6812 ARRAY_SIZE(zfs_keys_channel_program)); 6813 6814 zfs_ioctl_register("zpool_checkpoint", ZFS_IOC_POOL_CHECKPOINT, 6815 zfs_ioc_pool_checkpoint, zfs_secpolicy_config, POOL_NAME, 6816 POOL_CHECK_SUSPENDED | POOL_CHECK_READONLY, B_TRUE, B_TRUE, 6817 zfs_keys_pool_checkpoint, ARRAY_SIZE(zfs_keys_pool_checkpoint)); 6818 6819 zfs_ioctl_register("zpool_discard_checkpoint", 6820 ZFS_IOC_POOL_DISCARD_CHECKPOINT, zfs_ioc_pool_discard_checkpoint, 6821 zfs_secpolicy_config, POOL_NAME, 6822 POOL_CHECK_SUSPENDED | POOL_CHECK_READONLY, B_TRUE, B_TRUE, 6823 zfs_keys_pool_discard_checkpoint, 6824 ARRAY_SIZE(zfs_keys_pool_discard_checkpoint)); 6825 6826 zfs_ioctl_register("initialize", ZFS_IOC_POOL_INITIALIZE, 6827 zfs_ioc_pool_initialize, zfs_secpolicy_config, POOL_NAME, 6828 POOL_CHECK_SUSPENDED | POOL_CHECK_READONLY, B_TRUE, B_TRUE, 6829 zfs_keys_pool_initialize, ARRAY_SIZE(zfs_keys_pool_initialize)); 6830 6831 zfs_ioctl_register("trim", ZFS_IOC_POOL_TRIM, 6832 zfs_ioc_pool_trim, zfs_secpolicy_config, POOL_NAME, 6833 POOL_CHECK_SUSPENDED | POOL_CHECK_READONLY, B_TRUE, B_TRUE, 6834 zfs_keys_pool_trim, ARRAY_SIZE(zfs_keys_pool_trim)); 6835 6836 zfs_ioctl_register("set_bootenv", ZFS_IOC_SET_BOOTENV, 6837 zfs_ioc_set_bootenv, zfs_secpolicy_config, POOL_NAME, 6838 POOL_CHECK_SUSPENDED | POOL_CHECK_READONLY, B_FALSE, B_TRUE, 6839 zfs_keys_set_bootenv, ARRAY_SIZE(zfs_keys_set_bootenv)); 6840 6841 zfs_ioctl_register("get_bootenv", ZFS_IOC_GET_BOOTENV, 6842 zfs_ioc_get_bootenv, zfs_secpolicy_none, POOL_NAME, 6843 POOL_CHECK_SUSPENDED, B_FALSE, B_TRUE, 6844 zfs_keys_get_bootenv, ARRAY_SIZE(zfs_keys_get_bootenv)); 6845 6846 /* IOCTLS that use the legacy function signature */ 6847 6848 zfs_ioctl_register_legacy(ZFS_IOC_POOL_FREEZE, zfs_ioc_pool_freeze, 6849 zfs_secpolicy_config, NO_NAME, B_FALSE, POOL_CHECK_READONLY); 6850 6851 zfs_ioctl_register_pool(ZFS_IOC_POOL_CREATE, zfs_ioc_pool_create, 6852 zfs_secpolicy_config, B_TRUE, POOL_CHECK_NONE); 6853 zfs_ioctl_register_pool_modify(ZFS_IOC_POOL_SCAN, 6854 zfs_ioc_pool_scan); 6855 zfs_ioctl_register_pool_modify(ZFS_IOC_POOL_UPGRADE, 6856 zfs_ioc_pool_upgrade); 6857 zfs_ioctl_register_pool_modify(ZFS_IOC_VDEV_ADD, 6858 zfs_ioc_vdev_add); 6859 zfs_ioctl_register_pool_modify(ZFS_IOC_VDEV_REMOVE, 6860 zfs_ioc_vdev_remove); 6861 zfs_ioctl_register_pool_modify(ZFS_IOC_VDEV_SET_STATE, 6862 zfs_ioc_vdev_set_state); 6863 zfs_ioctl_register_pool_modify(ZFS_IOC_VDEV_ATTACH, 6864 zfs_ioc_vdev_attach); 6865 zfs_ioctl_register_pool_modify(ZFS_IOC_VDEV_DETACH, 6866 zfs_ioc_vdev_detach); 6867 zfs_ioctl_register_pool_modify(ZFS_IOC_VDEV_SETPATH, 6868 zfs_ioc_vdev_setpath); 6869 zfs_ioctl_register_pool_modify(ZFS_IOC_VDEV_SETFRU, 6870 zfs_ioc_vdev_setfru); 6871 zfs_ioctl_register_pool_modify(ZFS_IOC_POOL_SET_PROPS, 6872 zfs_ioc_pool_set_props); 6873 zfs_ioctl_register_pool_modify(ZFS_IOC_VDEV_SPLIT, 6874 zfs_ioc_vdev_split); 6875 zfs_ioctl_register_pool_modify(ZFS_IOC_POOL_REGUID, 6876 zfs_ioc_pool_reguid); 6877 6878 zfs_ioctl_register_pool_meta(ZFS_IOC_POOL_CONFIGS, 6879 zfs_ioc_pool_configs, zfs_secpolicy_none); 6880 zfs_ioctl_register_pool_meta(ZFS_IOC_POOL_TRYIMPORT, 6881 zfs_ioc_pool_tryimport, zfs_secpolicy_config); 6882 zfs_ioctl_register_pool_meta(ZFS_IOC_INJECT_FAULT, 6883 zfs_ioc_inject_fault, zfs_secpolicy_inject); 6884 zfs_ioctl_register_pool_meta(ZFS_IOC_CLEAR_FAULT, 6885 zfs_ioc_clear_fault, zfs_secpolicy_inject); 6886 zfs_ioctl_register_pool_meta(ZFS_IOC_INJECT_LIST_NEXT, 6887 zfs_ioc_inject_list_next, zfs_secpolicy_inject); 6888 6889 /* 6890 * pool destroy, and export don't log the history as part of 6891 * zfsdev_ioctl, but rather zfs_ioc_pool_export 6892 * does the logging of those commands. 6893 */ 6894 zfs_ioctl_register_pool(ZFS_IOC_POOL_DESTROY, zfs_ioc_pool_destroy, 6895 zfs_secpolicy_config, B_FALSE, POOL_CHECK_NONE); 6896 zfs_ioctl_register_pool(ZFS_IOC_POOL_EXPORT, zfs_ioc_pool_export, 6897 zfs_secpolicy_config, B_FALSE, POOL_CHECK_NONE); 6898 6899 zfs_ioctl_register_pool(ZFS_IOC_POOL_STATS, zfs_ioc_pool_stats, 6900 zfs_secpolicy_read, B_FALSE, POOL_CHECK_NONE); 6901 zfs_ioctl_register_pool(ZFS_IOC_POOL_GET_PROPS, zfs_ioc_pool_get_props, 6902 zfs_secpolicy_read, B_FALSE, POOL_CHECK_NONE); 6903 6904 zfs_ioctl_register_pool(ZFS_IOC_ERROR_LOG, zfs_ioc_error_log, 6905 zfs_secpolicy_inject, B_FALSE, POOL_CHECK_SUSPENDED); 6906 zfs_ioctl_register_pool(ZFS_IOC_DSOBJ_TO_DSNAME, 6907 zfs_ioc_dsobj_to_dsname, 6908 zfs_secpolicy_diff, B_FALSE, POOL_CHECK_SUSPENDED); 6909 zfs_ioctl_register_pool(ZFS_IOC_POOL_GET_HISTORY, 6910 zfs_ioc_pool_get_history, 6911 zfs_secpolicy_config, B_FALSE, POOL_CHECK_SUSPENDED); 6912 6913 zfs_ioctl_register_pool(ZFS_IOC_POOL_IMPORT, zfs_ioc_pool_import, 6914 zfs_secpolicy_config, B_TRUE, POOL_CHECK_NONE); 6915 6916 zfs_ioctl_register_pool(ZFS_IOC_CLEAR, zfs_ioc_clear, 6917 zfs_secpolicy_config, B_TRUE, POOL_CHECK_READONLY); 6918 zfs_ioctl_register_pool(ZFS_IOC_POOL_REOPEN, zfs_ioc_pool_reopen, 6919 zfs_secpolicy_config, B_TRUE, POOL_CHECK_SUSPENDED); 6920 6921 zfs_ioctl_register_dataset_read(ZFS_IOC_SPACE_WRITTEN, 6922 zfs_ioc_space_written); 6923 zfs_ioctl_register_dataset_read(ZFS_IOC_OBJSET_RECVD_PROPS, 6924 zfs_ioc_objset_recvd_props); 6925 zfs_ioctl_register_dataset_read(ZFS_IOC_NEXT_OBJ, 6926 zfs_ioc_next_obj); 6927 zfs_ioctl_register_dataset_read(ZFS_IOC_GET_FSACL, 6928 zfs_ioc_get_fsacl); 6929 zfs_ioctl_register_dataset_read(ZFS_IOC_OBJSET_STATS, 6930 zfs_ioc_objset_stats); 6931 zfs_ioctl_register_dataset_read(ZFS_IOC_OBJSET_ZPLPROPS, 6932 zfs_ioc_objset_zplprops); 6933 zfs_ioctl_register_dataset_read(ZFS_IOC_DATASET_LIST_NEXT, 6934 zfs_ioc_dataset_list_next); 6935 zfs_ioctl_register_dataset_read(ZFS_IOC_SNAPSHOT_LIST_NEXT, 6936 zfs_ioc_snapshot_list_next); 6937 zfs_ioctl_register_dataset_read(ZFS_IOC_SEND_PROGRESS, 6938 zfs_ioc_send_progress); 6939 6940 zfs_ioctl_register_dataset_read_secpolicy(ZFS_IOC_DIFF, 6941 zfs_ioc_diff, zfs_secpolicy_diff); 6942 zfs_ioctl_register_dataset_read_secpolicy(ZFS_IOC_OBJ_TO_STATS, 6943 zfs_ioc_obj_to_stats, zfs_secpolicy_diff); 6944 zfs_ioctl_register_dataset_read_secpolicy(ZFS_IOC_OBJ_TO_PATH, 6945 zfs_ioc_obj_to_path, zfs_secpolicy_diff); 6946 zfs_ioctl_register_dataset_read_secpolicy(ZFS_IOC_USERSPACE_ONE, 6947 zfs_ioc_userspace_one, zfs_secpolicy_userspace_one); 6948 zfs_ioctl_register_dataset_read_secpolicy(ZFS_IOC_USERSPACE_MANY, 6949 zfs_ioc_userspace_many, zfs_secpolicy_userspace_many); 6950 zfs_ioctl_register_dataset_read_secpolicy(ZFS_IOC_SEND, 6951 zfs_ioc_send, zfs_secpolicy_send); 6952 6953 zfs_ioctl_register_dataset_modify(ZFS_IOC_SET_PROP, zfs_ioc_set_prop, 6954 zfs_secpolicy_none); 6955 zfs_ioctl_register_dataset_modify(ZFS_IOC_DESTROY, zfs_ioc_destroy, 6956 zfs_secpolicy_destroy); 6957 zfs_ioctl_register_dataset_modify(ZFS_IOC_RENAME, zfs_ioc_rename, 6958 zfs_secpolicy_rename); 6959 zfs_ioctl_register_dataset_modify(ZFS_IOC_RECV, zfs_ioc_recv, 6960 zfs_secpolicy_recv); 6961 zfs_ioctl_register_dataset_modify(ZFS_IOC_PROMOTE, zfs_ioc_promote, 6962 zfs_secpolicy_promote); 6963 zfs_ioctl_register_dataset_modify(ZFS_IOC_INHERIT_PROP, 6964 zfs_ioc_inherit_prop, zfs_secpolicy_inherit_prop); 6965 zfs_ioctl_register_dataset_modify(ZFS_IOC_SET_FSACL, zfs_ioc_set_fsacl, 6966 zfs_secpolicy_set_fsacl); 6967 6968 zfs_ioctl_register_dataset_nolog(ZFS_IOC_SHARE, zfs_ioc_share, 6969 zfs_secpolicy_share, POOL_CHECK_NONE); 6970 zfs_ioctl_register_dataset_nolog(ZFS_IOC_SMB_ACL, zfs_ioc_smb_acl, 6971 zfs_secpolicy_smb_acl, POOL_CHECK_NONE); 6972 zfs_ioctl_register_dataset_nolog(ZFS_IOC_USERSPACE_UPGRADE, 6973 zfs_ioc_userspace_upgrade, zfs_secpolicy_userspace_upgrade, 6974 POOL_CHECK_SUSPENDED | POOL_CHECK_READONLY); 6975 zfs_ioctl_register_dataset_nolog(ZFS_IOC_TMP_SNAPSHOT, 6976 zfs_ioc_tmp_snapshot, zfs_secpolicy_tmp_snapshot, 6977 POOL_CHECK_SUSPENDED | POOL_CHECK_READONLY); 6978 } 6979 6980 /* 6981 * Verify that for non-legacy ioctls the input nvlist 6982 * pairs match against the expected input. 6983 * 6984 * Possible errors are: 6985 * ZFS_ERR_IOC_ARG_UNAVAIL An unrecognized nvpair was encountered 6986 * ZFS_ERR_IOC_ARG_REQUIRED A required nvpair is missing 6987 * ZFS_ERR_IOC_ARG_BADTYPE Invalid type for nvpair 6988 */ 6989 static int 6990 zfs_check_input_nvpairs(nvlist_t *innvl, const zfs_ioc_vec_t *vec) 6991 { 6992 const zfs_ioc_key_t *nvl_keys = vec->zvec_nvl_keys; 6993 boolean_t required_keys_found = B_FALSE; 6994 6995 /* 6996 * examine each input pair 6997 */ 6998 for (nvpair_t *pair = nvlist_next_nvpair(innvl, NULL); 6999 pair != NULL; pair = nvlist_next_nvpair(innvl, pair)) { 7000 char *name = nvpair_name(pair); 7001 data_type_t type = nvpair_type(pair); 7002 boolean_t identified = B_FALSE; 7003 7004 /* 7005 * check pair against the documented names and type 7006 */ 7007 for (int k = 0; k < vec->zvec_nvl_key_count; k++) { 7008 /* if not a wild card name, check for an exact match */ 7009 if ((nvl_keys[k].zkey_flags & ZK_WILDCARDLIST) == 0 && 7010 strcmp(nvl_keys[k].zkey_name, name) != 0) 7011 continue; 7012 7013 identified = B_TRUE; 7014 7015 if (nvl_keys[k].zkey_type != DATA_TYPE_ANY && 7016 nvl_keys[k].zkey_type != type) { 7017 return (SET_ERROR(ZFS_ERR_IOC_ARG_BADTYPE)); 7018 } 7019 7020 if (nvl_keys[k].zkey_flags & ZK_OPTIONAL) 7021 continue; 7022 7023 required_keys_found = B_TRUE; 7024 break; 7025 } 7026 7027 /* allow an 'optional' key, everything else is invalid */ 7028 if (!identified && 7029 (strcmp(name, "optional") != 0 || 7030 type != DATA_TYPE_NVLIST)) { 7031 return (SET_ERROR(ZFS_ERR_IOC_ARG_UNAVAIL)); 7032 } 7033 } 7034 7035 /* verify that all required keys were found */ 7036 for (int k = 0; k < vec->zvec_nvl_key_count; k++) { 7037 if (nvl_keys[k].zkey_flags & ZK_OPTIONAL) 7038 continue; 7039 7040 if (nvl_keys[k].zkey_flags & ZK_WILDCARDLIST) { 7041 /* at least one non-optionial key is expected here */ 7042 if (!required_keys_found) 7043 return (SET_ERROR(ZFS_ERR_IOC_ARG_REQUIRED)); 7044 continue; 7045 } 7046 7047 if (!nvlist_exists(innvl, nvl_keys[k].zkey_name)) 7048 return (SET_ERROR(ZFS_ERR_IOC_ARG_REQUIRED)); 7049 } 7050 7051 return (0); 7052 } 7053 7054 int 7055 pool_status_check(const char *name, zfs_ioc_namecheck_t type, 7056 zfs_ioc_poolcheck_t check) 7057 { 7058 spa_t *spa; 7059 int error; 7060 7061 ASSERT(type == POOL_NAME || type == DATASET_NAME); 7062 7063 if (check & POOL_CHECK_NONE) 7064 return (0); 7065 7066 error = spa_open(name, &spa, FTAG); 7067 if (error == 0) { 7068 if ((check & POOL_CHECK_SUSPENDED) && spa_suspended(spa)) 7069 error = SET_ERROR(EAGAIN); 7070 else if ((check & POOL_CHECK_READONLY) && !spa_writeable(spa)) 7071 error = SET_ERROR(EROFS); 7072 spa_close(spa, FTAG); 7073 } 7074 return (error); 7075 } 7076 7077 /* 7078 * Find a free minor number. 7079 */ 7080 minor_t 7081 zfsdev_minor_alloc(void) 7082 { 7083 static minor_t last_minor; 7084 minor_t m; 7085 7086 ASSERT(MUTEX_HELD(&zfsdev_state_lock)); 7087 7088 for (m = last_minor + 1; m != last_minor; m++) { 7089 if (m > ZFSDEV_MAX_MINOR) 7090 m = 1; 7091 if (ddi_get_soft_state(zfsdev_state, m) == NULL) { 7092 last_minor = m; 7093 return (m); 7094 } 7095 } 7096 7097 return (0); 7098 } 7099 7100 static int 7101 zfs_ctldev_init(dev_t *devp) 7102 { 7103 minor_t minor; 7104 zfs_soft_state_t *zs; 7105 7106 ASSERT(MUTEX_HELD(&zfsdev_state_lock)); 7107 ASSERT(getminor(*devp) == 0); 7108 7109 minor = zfsdev_minor_alloc(); 7110 if (minor == 0) 7111 return (SET_ERROR(ENXIO)); 7112 7113 if (ddi_soft_state_zalloc(zfsdev_state, minor) != DDI_SUCCESS) 7114 return (SET_ERROR(EAGAIN)); 7115 7116 *devp = makedevice(getemajor(*devp), minor); 7117 7118 zs = ddi_get_soft_state(zfsdev_state, minor); 7119 zs->zss_type = ZSST_CTLDEV; 7120 zfs_onexit_init((zfs_onexit_t **)&zs->zss_data); 7121 7122 return (0); 7123 } 7124 7125 static void 7126 zfs_ctldev_destroy(zfs_onexit_t *zo, minor_t minor) 7127 { 7128 ASSERT(MUTEX_HELD(&zfsdev_state_lock)); 7129 7130 zfs_onexit_destroy(zo); 7131 ddi_soft_state_free(zfsdev_state, minor); 7132 } 7133 7134 void * 7135 zfsdev_get_soft_state(minor_t minor, enum zfs_soft_state_type which) 7136 { 7137 zfs_soft_state_t *zp; 7138 7139 zp = ddi_get_soft_state(zfsdev_state, minor); 7140 if (zp == NULL || zp->zss_type != which) 7141 return (NULL); 7142 7143 return (zp->zss_data); 7144 } 7145 7146 static int 7147 zfsdev_open(dev_t *devp, int flag, int otyp, cred_t *cr) 7148 { 7149 int error = 0; 7150 7151 if (getminor(*devp) != 0) 7152 return (zvol_open(devp, flag, otyp, cr)); 7153 7154 /* This is the control device. Allocate a new minor if requested. */ 7155 if (flag & FEXCL) { 7156 mutex_enter(&zfsdev_state_lock); 7157 error = zfs_ctldev_init(devp); 7158 mutex_exit(&zfsdev_state_lock); 7159 } 7160 7161 return (error); 7162 } 7163 7164 static int 7165 zfsdev_close(dev_t dev, int flag, int otyp, cred_t *cr) 7166 { 7167 zfs_onexit_t *zo; 7168 minor_t minor = getminor(dev); 7169 7170 if (minor == 0) 7171 return (0); 7172 7173 mutex_enter(&zfsdev_state_lock); 7174 zo = zfsdev_get_soft_state(minor, ZSST_CTLDEV); 7175 if (zo == NULL) { 7176 mutex_exit(&zfsdev_state_lock); 7177 return (zvol_close(dev, flag, otyp, cr)); 7178 } 7179 zfs_ctldev_destroy(zo, minor); 7180 mutex_exit(&zfsdev_state_lock); 7181 7182 return (0); 7183 } 7184 7185 static int 7186 zfsdev_ioctl(dev_t dev, int cmd, intptr_t arg, int flag, cred_t *cr, int *rvalp) 7187 { 7188 zfs_cmd_t *zc; 7189 uint_t vecnum; 7190 int error, rc, len; 7191 minor_t minor = getminor(dev); 7192 const zfs_ioc_vec_t *vec; 7193 char *saved_poolname = NULL; 7194 nvlist_t *innvl = NULL; 7195 7196 if (minor != 0 && 7197 zfsdev_get_soft_state(minor, ZSST_CTLDEV) == NULL) 7198 return (zvol_ioctl(dev, cmd, arg, flag, cr, rvalp)); 7199 7200 vecnum = cmd - ZFS_IOC_FIRST; 7201 ASSERT3U(getmajor(dev), ==, ddi_driver_major(zfs_dip)); 7202 7203 if (vecnum >= sizeof (zfs_ioc_vec) / sizeof (zfs_ioc_vec[0])) 7204 return (SET_ERROR(ZFS_ERR_IOC_CMD_UNAVAIL)); 7205 vec = &zfs_ioc_vec[vecnum]; 7206 7207 /* 7208 * The registered ioctl list may be sparse, verify that either 7209 * a normal or legacy handler are registered. 7210 */ 7211 if (vec->zvec_func == NULL && vec->zvec_legacy_func == NULL) 7212 return (SET_ERROR(ZFS_ERR_IOC_CMD_UNAVAIL)); 7213 7214 zc = kmem_zalloc(sizeof (zfs_cmd_t), KM_SLEEP); 7215 7216 error = ddi_copyin((void *)arg, zc, sizeof (zfs_cmd_t), flag); 7217 if (error != 0) { 7218 error = SET_ERROR(EFAULT); 7219 goto out; 7220 } 7221 7222 zc->zc_iflags = flag & FKIOCTL; 7223 if (zc->zc_nvlist_src_size != 0) { 7224 error = get_nvlist(zc->zc_nvlist_src, zc->zc_nvlist_src_size, 7225 zc->zc_iflags, &innvl); 7226 if (error != 0) 7227 goto out; 7228 } 7229 7230 /* 7231 * Ensure that all pool/dataset names are valid before we pass down to 7232 * the lower layers. 7233 */ 7234 zc->zc_name[sizeof (zc->zc_name) - 1] = '\0'; 7235 switch (vec->zvec_namecheck) { 7236 case POOL_NAME: 7237 if (pool_namecheck(zc->zc_name, NULL, NULL) != 0) 7238 error = SET_ERROR(EINVAL); 7239 else 7240 error = pool_status_check(zc->zc_name, 7241 vec->zvec_namecheck, vec->zvec_pool_check); 7242 break; 7243 7244 case DATASET_NAME: 7245 if (dataset_namecheck(zc->zc_name, NULL, NULL) != 0) 7246 error = SET_ERROR(EINVAL); 7247 else 7248 error = pool_status_check(zc->zc_name, 7249 vec->zvec_namecheck, vec->zvec_pool_check); 7250 break; 7251 7252 case NO_NAME: 7253 break; 7254 } 7255 7256 /* 7257 * Ensure that all input pairs are valid before we pass them down 7258 * to the lower layers. 7259 * 7260 * The vectored functions can use fnvlist_lookup_{type} for any 7261 * required pairs since zfs_check_input_nvpairs() confirmed that 7262 * they exist and are of the correct type. 7263 */ 7264 if (error == 0 && vec->zvec_func != NULL) { 7265 error = zfs_check_input_nvpairs(innvl, vec); 7266 if (error != 0) 7267 goto out; 7268 } 7269 7270 if (error == 0) 7271 error = vec->zvec_secpolicy(zc, innvl, cr); 7272 7273 if (error != 0) 7274 goto out; 7275 7276 /* legacy ioctls can modify zc_name */ 7277 len = strcspn(zc->zc_name, "/@#") + 1; 7278 saved_poolname = kmem_alloc(len, KM_SLEEP); 7279 (void) strlcpy(saved_poolname, zc->zc_name, len); 7280 7281 if (vec->zvec_func != NULL) { 7282 nvlist_t *outnvl; 7283 int puterror = 0; 7284 spa_t *spa; 7285 nvlist_t *lognv = NULL; 7286 7287 ASSERT(vec->zvec_legacy_func == NULL); 7288 7289 /* 7290 * Add the innvl to the lognv before calling the func, 7291 * in case the func changes the innvl. 7292 */ 7293 if (vec->zvec_allow_log) { 7294 lognv = fnvlist_alloc(); 7295 fnvlist_add_string(lognv, ZPOOL_HIST_IOCTL, 7296 vec->zvec_name); 7297 if (!nvlist_empty(innvl)) { 7298 fnvlist_add_nvlist(lognv, ZPOOL_HIST_INPUT_NVL, 7299 innvl); 7300 } 7301 } 7302 7303 outnvl = fnvlist_alloc(); 7304 error = vec->zvec_func(zc->zc_name, innvl, outnvl); 7305 7306 /* 7307 * Some commands can partially execute, modify state, and still 7308 * return an error. In these cases, attempt to record what 7309 * was modified. 7310 */ 7311 if ((error == 0 || 7312 (cmd == ZFS_IOC_CHANNEL_PROGRAM && error != EINVAL)) && 7313 vec->zvec_allow_log && 7314 spa_open(zc->zc_name, &spa, FTAG) == 0) { 7315 if (!nvlist_empty(outnvl)) { 7316 fnvlist_add_nvlist(lognv, ZPOOL_HIST_OUTPUT_NVL, 7317 outnvl); 7318 } 7319 if (error != 0) { 7320 fnvlist_add_int64(lognv, ZPOOL_HIST_ERRNO, 7321 error); 7322 } 7323 (void) spa_history_log_nvl(spa, lognv); 7324 spa_close(spa, FTAG); 7325 } 7326 fnvlist_free(lognv); 7327 7328 if (!nvlist_empty(outnvl) || zc->zc_nvlist_dst_size != 0) { 7329 int smusherror = 0; 7330 if (vec->zvec_smush_outnvlist) { 7331 smusherror = nvlist_smush(outnvl, 7332 zc->zc_nvlist_dst_size); 7333 } 7334 if (smusherror == 0) 7335 puterror = put_nvlist(zc, outnvl); 7336 } 7337 7338 if (puterror != 0) 7339 error = puterror; 7340 7341 nvlist_free(outnvl); 7342 } else { 7343 error = vec->zvec_legacy_func(zc); 7344 } 7345 7346 out: 7347 nvlist_free(innvl); 7348 rc = ddi_copyout(zc, (void *)arg, sizeof (zfs_cmd_t), flag); 7349 if (error == 0 && rc != 0) 7350 error = SET_ERROR(EFAULT); 7351 if (error == 0 && vec->zvec_allow_log) { 7352 char *s = tsd_get(zfs_allow_log_key); 7353 if (s != NULL) 7354 strfree(s); 7355 (void) tsd_set(zfs_allow_log_key, saved_poolname); 7356 } else { 7357 if (saved_poolname != NULL) 7358 strfree(saved_poolname); 7359 } 7360 7361 kmem_free(zc, sizeof (zfs_cmd_t)); 7362 return (error); 7363 } 7364 7365 static int 7366 zfs_attach(dev_info_t *dip, ddi_attach_cmd_t cmd) 7367 { 7368 if (cmd != DDI_ATTACH) 7369 return (DDI_FAILURE); 7370 7371 if (ddi_create_minor_node(dip, "zfs", S_IFCHR, 0, 7372 DDI_PSEUDO, 0) == DDI_FAILURE) 7373 return (DDI_FAILURE); 7374 7375 zfs_dip = dip; 7376 7377 ddi_report_dev(dip); 7378 7379 return (DDI_SUCCESS); 7380 } 7381 7382 static int 7383 zfs_detach(dev_info_t *dip, ddi_detach_cmd_t cmd) 7384 { 7385 if (spa_busy() || zfs_busy() || zvol_busy()) 7386 return (DDI_FAILURE); 7387 7388 if (cmd != DDI_DETACH) 7389 return (DDI_FAILURE); 7390 7391 zfs_dip = NULL; 7392 7393 ddi_prop_remove_all(dip); 7394 ddi_remove_minor_node(dip, NULL); 7395 7396 return (DDI_SUCCESS); 7397 } 7398 7399 /*ARGSUSED*/ 7400 static int 7401 zfs_info(dev_info_t *dip, ddi_info_cmd_t infocmd, void *arg, void **result) 7402 { 7403 switch (infocmd) { 7404 case DDI_INFO_DEVT2DEVINFO: 7405 *result = zfs_dip; 7406 return (DDI_SUCCESS); 7407 7408 case DDI_INFO_DEVT2INSTANCE: 7409 *result = (void *)0; 7410 return (DDI_SUCCESS); 7411 } 7412 7413 return (DDI_FAILURE); 7414 } 7415 7416 /* 7417 * OK, so this is a little weird. 7418 * 7419 * /dev/zfs is the control node, i.e. minor 0. 7420 * /dev/zvol/[r]dsk/pool/dataset are the zvols, minor > 0. 7421 * 7422 * /dev/zfs has basically nothing to do except serve up ioctls, 7423 * so most of the standard driver entry points are in zvol.c. 7424 */ 7425 static struct cb_ops zfs_cb_ops = { 7426 zfsdev_open, /* open */ 7427 zfsdev_close, /* close */ 7428 zvol_strategy, /* strategy */ 7429 nodev, /* print */ 7430 zvol_dump, /* dump */ 7431 zvol_read, /* read */ 7432 zvol_write, /* write */ 7433 zfsdev_ioctl, /* ioctl */ 7434 nodev, /* devmap */ 7435 nodev, /* mmap */ 7436 nodev, /* segmap */ 7437 nochpoll, /* poll */ 7438 ddi_prop_op, /* prop_op */ 7439 NULL, /* streamtab */ 7440 D_NEW | D_MP | D_64BIT, /* Driver compatibility flag */ 7441 CB_REV, /* version */ 7442 nodev, /* async read */ 7443 nodev, /* async write */ 7444 }; 7445 7446 static struct dev_ops zfs_dev_ops = { 7447 DEVO_REV, /* version */ 7448 0, /* refcnt */ 7449 zfs_info, /* info */ 7450 nulldev, /* identify */ 7451 nulldev, /* probe */ 7452 zfs_attach, /* attach */ 7453 zfs_detach, /* detach */ 7454 nodev, /* reset */ 7455 &zfs_cb_ops, /* driver operations */ 7456 NULL, /* no bus operations */ 7457 NULL, /* power */ 7458 ddi_quiesce_not_needed, /* quiesce */ 7459 }; 7460 7461 static struct modldrv zfs_modldrv = { 7462 &mod_driverops, 7463 "ZFS storage pool", 7464 &zfs_dev_ops 7465 }; 7466 7467 static struct modlinkage modlinkage = { 7468 MODREV_1, 7469 (void *)&zfs_modlfs, 7470 (void *)&zfs_modldrv, 7471 NULL 7472 }; 7473 7474 static void 7475 zfs_allow_log_destroy(void *arg) 7476 { 7477 char *poolname = arg; 7478 strfree(poolname); 7479 } 7480 7481 int 7482 _init(void) 7483 { 7484 int error; 7485 7486 spa_init(FREAD | FWRITE); 7487 zfs_init(); 7488 zvol_init(); 7489 zfs_ioctl_init(); 7490 7491 if ((error = mod_install(&modlinkage)) != 0) { 7492 zvol_fini(); 7493 zfs_fini(); 7494 spa_fini(); 7495 return (error); 7496 } 7497 7498 tsd_create(&zfs_fsyncer_key, NULL); 7499 tsd_create(&rrw_tsd_key, rrw_tsd_destroy); 7500 tsd_create(&zfs_allow_log_key, zfs_allow_log_destroy); 7501 7502 error = ldi_ident_from_mod(&modlinkage, &zfs_li); 7503 ASSERT(error == 0); 7504 mutex_init(&zfs_share_lock, NULL, MUTEX_DEFAULT, NULL); 7505 7506 return (0); 7507 } 7508 7509 int 7510 _fini(void) 7511 { 7512 int error; 7513 7514 if (spa_busy() || zfs_busy() || zvol_busy() || zio_injection_enabled) 7515 return (SET_ERROR(EBUSY)); 7516 7517 if ((error = mod_remove(&modlinkage)) != 0) 7518 return (error); 7519 7520 zvol_fini(); 7521 zfs_fini(); 7522 spa_fini(); 7523 if (zfs_nfsshare_inited) 7524 (void) ddi_modclose(nfs_mod); 7525 if (zfs_smbshare_inited) 7526 (void) ddi_modclose(smbsrv_mod); 7527 if (zfs_nfsshare_inited || zfs_smbshare_inited) 7528 (void) ddi_modclose(sharefs_mod); 7529 7530 tsd_destroy(&zfs_fsyncer_key); 7531 ldi_ident_release(zfs_li); 7532 zfs_li = NULL; 7533 mutex_destroy(&zfs_share_lock); 7534 7535 return (error); 7536 } 7537 7538 int 7539 _info(struct modinfo *modinfop) 7540 { 7541 return (mod_info(&modlinkage, modinfop)); 7542 } 7543