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 */ 41 42 /* 43 * ZFS ioctls. 44 * 45 * This file handles the ioctls to /dev/zfs, used for configuring ZFS storage 46 * pools and filesystems, e.g. with /sbin/zfs and /sbin/zpool. 47 * 48 * There are two ways that we handle ioctls: the legacy way where almost 49 * all of the logic is in the ioctl callback, and the new way where most 50 * of the marshalling is handled in the common entry point, zfsdev_ioctl(). 51 * 52 * Non-legacy ioctls should be registered by calling 53 * zfs_ioctl_register() from zfs_ioctl_init(). The ioctl is invoked 54 * from userland by lzc_ioctl(). 55 * 56 * The registration arguments are as follows: 57 * 58 * const char *name 59 * The name of the ioctl. This is used for history logging. If the 60 * ioctl returns successfully (the callback returns 0), and allow_log 61 * is true, then a history log entry will be recorded with the input & 62 * output nvlists. The log entry can be printed with "zpool history -i". 63 * 64 * zfs_ioc_t ioc 65 * The ioctl request number, which userland will pass to ioctl(2). 66 * The ioctl numbers can change from release to release, because 67 * the caller (libzfs) must be matched to the kernel. 68 * 69 * zfs_secpolicy_func_t *secpolicy 70 * This function will be called before the zfs_ioc_func_t, to 71 * determine if this operation is permitted. It should return EPERM 72 * on failure, and 0 on success. Checks include determining if the 73 * dataset is visible in this zone, and if the user has either all 74 * zfs privileges in the zone (SYS_MOUNT), or has been granted permission 75 * to do this operation on this dataset with "zfs allow". 76 * 77 * zfs_ioc_namecheck_t namecheck 78 * This specifies what to expect in the zfs_cmd_t:zc_name -- a pool 79 * name, a dataset name, or nothing. If the name is not well-formed, 80 * the ioctl will fail and the callback will not be called. 81 * Therefore, the callback can assume that the name is well-formed 82 * (e.g. is null-terminated, doesn't have more than one '@' character, 83 * doesn't have invalid characters). 84 * 85 * zfs_ioc_poolcheck_t pool_check 86 * This specifies requirements on the pool state. If the pool does 87 * not meet them (is suspended or is readonly), the ioctl will fail 88 * and the callback will not be called. If any checks are specified 89 * (i.e. it is not POOL_CHECK_NONE), namecheck must not be NO_NAME. 90 * Multiple checks can be or-ed together (e.g. POOL_CHECK_SUSPENDED | 91 * POOL_CHECK_READONLY). 92 * 93 * boolean_t smush_outnvlist 94 * If smush_outnvlist is true, then the output is presumed to be a 95 * list of errors, and it will be "smushed" down to fit into the 96 * caller's buffer, by removing some entries and replacing them with a 97 * single "N_MORE_ERRORS" entry indicating how many were removed. See 98 * nvlist_smush() for details. If smush_outnvlist is false, and the 99 * outnvlist does not fit into the userland-provided buffer, then the 100 * ioctl will fail with ENOMEM. 101 * 102 * zfs_ioc_func_t *func 103 * The callback function that will perform the operation. 104 * 105 * The callback should return 0 on success, or an error number on 106 * failure. If the function fails, the userland ioctl will return -1, 107 * and errno will be set to the callback's return value. The callback 108 * will be called with the following arguments: 109 * 110 * const char *name 111 * The name of the pool or dataset to operate on, from 112 * zfs_cmd_t:zc_name. The 'namecheck' argument specifies the 113 * expected type (pool, dataset, or none). 114 * 115 * nvlist_t *innvl 116 * The input nvlist, deserialized from zfs_cmd_t:zc_nvlist_src. Or 117 * NULL if no input nvlist was provided. Changes to this nvlist are 118 * ignored. If the input nvlist could not be deserialized, the 119 * ioctl will fail and the callback will not be called. 120 * 121 * nvlist_t *outnvl 122 * The output nvlist, initially empty. The callback can fill it in, 123 * and it will be returned to userland by serializing it into 124 * zfs_cmd_t:zc_nvlist_dst. If it is non-empty, and serialization 125 * fails (e.g. because the caller didn't supply a large enough 126 * buffer), then the overall ioctl will fail. See the 127 * 'smush_nvlist' argument above for additional behaviors. 128 * 129 * There are two typical uses of the output nvlist: 130 * - To return state, e.g. property values. In this case, 131 * smush_outnvlist should be false. If the buffer was not large 132 * enough, the caller will reallocate a larger buffer and try 133 * the ioctl again. 134 * 135 * - To return multiple errors from an ioctl which makes on-disk 136 * changes. In this case, smush_outnvlist should be true. 137 * Ioctls which make on-disk modifications should generally not 138 * use the outnvl if they succeed, because the caller can not 139 * distinguish between the operation failing, and 140 * deserialization failing. 141 */ 142 143 #include <sys/types.h> 144 #include <sys/param.h> 145 #include <sys/errno.h> 146 #include <sys/uio.h> 147 #include <sys/buf.h> 148 #include <sys/modctl.h> 149 #include <sys/open.h> 150 #include <sys/file.h> 151 #include <sys/kmem.h> 152 #include <sys/conf.h> 153 #include <sys/cmn_err.h> 154 #include <sys/stat.h> 155 #include <sys/zfs_ioctl.h> 156 #include <sys/zfs_vfsops.h> 157 #include <sys/zfs_znode.h> 158 #include <sys/zap.h> 159 #include <sys/spa.h> 160 #include <sys/spa_impl.h> 161 #include <sys/vdev.h> 162 #include <sys/priv_impl.h> 163 #include <sys/dmu.h> 164 #include <sys/dsl_dir.h> 165 #include <sys/dsl_dataset.h> 166 #include <sys/dsl_prop.h> 167 #include <sys/dsl_deleg.h> 168 #include <sys/dmu_objset.h> 169 #include <sys/dmu_impl.h> 170 #include <sys/dmu_tx.h> 171 #include <sys/ddi.h> 172 #include <sys/sunddi.h> 173 #include <sys/sunldi.h> 174 #include <sys/policy.h> 175 #include <sys/zone.h> 176 #include <sys/nvpair.h> 177 #include <sys/pathname.h> 178 #include <sys/mount.h> 179 #include <sys/sdt.h> 180 #include <sys/fs/zfs.h> 181 #include <sys/zfs_ctldir.h> 182 #include <sys/zfs_dir.h> 183 #include <sys/zfs_onexit.h> 184 #include <sys/zvol.h> 185 #include <sys/dsl_scan.h> 186 #include <sharefs/share.h> 187 #include <sys/dmu_objset.h> 188 #include <sys/dmu_recv.h> 189 #include <sys/dmu_send.h> 190 #include <sys/dsl_destroy.h> 191 #include <sys/dsl_bookmark.h> 192 #include <sys/dsl_userhold.h> 193 #include <sys/zfeature.h> 194 #include <sys/zcp.h> 195 #include <sys/zio_checksum.h> 196 #include <sys/vdev_removal.h> 197 #include <sys/vdev_impl.h> 198 #include <sys/vdev_initialize.h> 199 #include <sys/vdev_trim.h> 200 #include <sys/dsl_crypt.h> 201 202 #include "zfs_namecheck.h" 203 #include "zfs_prop.h" 204 #include "zfs_deleg.h" 205 #include "zfs_comutil.h" 206 207 #include "lua.h" 208 #include "lauxlib.h" 209 210 extern struct modlfs zfs_modlfs; 211 212 extern void zfs_init(void); 213 extern void zfs_fini(void); 214 215 ldi_ident_t zfs_li = NULL; 216 dev_info_t *zfs_dip; 217 218 uint_t zfs_fsyncer_key; 219 extern uint_t rrw_tsd_key; 220 static uint_t zfs_allow_log_key; 221 222 typedef int zfs_ioc_legacy_func_t(zfs_cmd_t *); 223 typedef int zfs_ioc_func_t(const char *, nvlist_t *, nvlist_t *); 224 typedef int zfs_secpolicy_func_t(zfs_cmd_t *, nvlist_t *, cred_t *); 225 226 typedef enum { 227 NO_NAME, 228 POOL_NAME, 229 DATASET_NAME 230 } zfs_ioc_namecheck_t; 231 232 typedef enum { 233 POOL_CHECK_NONE = 1 << 0, 234 POOL_CHECK_SUSPENDED = 1 << 1, 235 POOL_CHECK_READONLY = 1 << 2, 236 } zfs_ioc_poolcheck_t; 237 238 typedef struct zfs_ioc_vec { 239 zfs_ioc_legacy_func_t *zvec_legacy_func; 240 zfs_ioc_func_t *zvec_func; 241 zfs_secpolicy_func_t *zvec_secpolicy; 242 zfs_ioc_namecheck_t zvec_namecheck; 243 boolean_t zvec_allow_log; 244 zfs_ioc_poolcheck_t zvec_pool_check; 245 boolean_t zvec_smush_outnvlist; 246 const char *zvec_name; 247 } zfs_ioc_vec_t; 248 249 /* This array is indexed by zfs_userquota_prop_t */ 250 static const char *userquota_perms[] = { 251 ZFS_DELEG_PERM_USERUSED, 252 ZFS_DELEG_PERM_USERQUOTA, 253 ZFS_DELEG_PERM_GROUPUSED, 254 ZFS_DELEG_PERM_GROUPQUOTA, 255 ZFS_DELEG_PERM_USEROBJUSED, 256 ZFS_DELEG_PERM_USEROBJQUOTA, 257 ZFS_DELEG_PERM_GROUPOBJUSED, 258 ZFS_DELEG_PERM_GROUPOBJQUOTA, 259 ZFS_DELEG_PERM_PROJECTUSED, 260 ZFS_DELEG_PERM_PROJECTQUOTA, 261 ZFS_DELEG_PERM_PROJECTOBJUSED, 262 ZFS_DELEG_PERM_PROJECTOBJQUOTA, 263 }; 264 265 static int zfs_ioc_userspace_upgrade(zfs_cmd_t *zc); 266 static int zfs_ioc_id_quota_upgrade(zfs_cmd_t *zc); 267 static int zfs_check_settable(const char *name, nvpair_t *property, 268 cred_t *cr); 269 static int zfs_check_clearable(char *dataset, nvlist_t *props, 270 nvlist_t **errors); 271 static int zfs_fill_zplprops_root(uint64_t, nvlist_t *, nvlist_t *, 272 boolean_t *); 273 int zfs_set_prop_nvlist(const char *, zprop_source_t, nvlist_t *, nvlist_t *); 274 static int get_nvlist(uint64_t nvl, uint64_t size, int iflag, nvlist_t **nvp); 275 276 static int zfs_prop_activate_feature(spa_t *spa, spa_feature_t feature); 277 278 /* _NOTE(PRINTFLIKE(4)) - this is printf-like, but lint is too whiney */ 279 void 280 __dprintf(const char *file, const char *func, int line, const char *fmt, ...) 281 { 282 const char *newfile; 283 char buf[512]; 284 va_list adx; 285 286 /* 287 * Get rid of annoying "../common/" prefix to filename. 288 */ 289 newfile = strrchr(file, '/'); 290 if (newfile != NULL) { 291 newfile = newfile + 1; /* Get rid of leading / */ 292 } else { 293 newfile = file; 294 } 295 296 va_start(adx, fmt); 297 (void) vsnprintf(buf, sizeof (buf), fmt, adx); 298 va_end(adx); 299 300 /* 301 * To get this data, use the zfs-dprintf probe as so: 302 * dtrace -q -n 'zfs-dprintf \ 303 * /stringof(arg0) == "dbuf.c"/ \ 304 * {printf("%s: %s", stringof(arg1), stringof(arg3))}' 305 * arg0 = file name 306 * arg1 = function name 307 * arg2 = line number 308 * arg3 = message 309 */ 310 DTRACE_PROBE4(zfs__dprintf, 311 char *, newfile, char *, func, int, line, char *, buf); 312 } 313 314 static void 315 history_str_free(char *buf) 316 { 317 kmem_free(buf, HIS_MAX_RECORD_LEN); 318 } 319 320 static char * 321 history_str_get(zfs_cmd_t *zc) 322 { 323 char *buf; 324 325 if (zc->zc_history == 0) 326 return (NULL); 327 328 buf = kmem_alloc(HIS_MAX_RECORD_LEN, KM_SLEEP); 329 if (copyinstr((void *)(uintptr_t)zc->zc_history, 330 buf, HIS_MAX_RECORD_LEN, NULL) != 0) { 331 history_str_free(buf); 332 return (NULL); 333 } 334 335 buf[HIS_MAX_RECORD_LEN -1] = '\0'; 336 337 return (buf); 338 } 339 340 /* 341 * Check to see if the named dataset is currently defined as bootable 342 */ 343 static boolean_t 344 zfs_is_bootfs(const char *name) 345 { 346 objset_t *os; 347 348 if (dmu_objset_hold(name, FTAG, &os) == 0) { 349 boolean_t ret; 350 ret = (dmu_objset_id(os) == spa_bootfs(dmu_objset_spa(os))); 351 dmu_objset_rele(os, FTAG); 352 return (ret); 353 } 354 return (B_FALSE); 355 } 356 357 /* 358 * Return non-zero if the spa version is less than requested version. 359 */ 360 static int 361 zfs_earlier_version(const char *name, int version) 362 { 363 spa_t *spa; 364 365 if (spa_open(name, &spa, FTAG) == 0) { 366 if (spa_version(spa) < version) { 367 spa_close(spa, FTAG); 368 return (1); 369 } 370 spa_close(spa, FTAG); 371 } 372 return (0); 373 } 374 375 /* 376 * Return TRUE if the ZPL version is less than requested version. 377 */ 378 static boolean_t 379 zpl_earlier_version(const char *name, int version) 380 { 381 objset_t *os; 382 boolean_t rc = B_TRUE; 383 384 if (dmu_objset_hold(name, FTAG, &os) == 0) { 385 uint64_t zplversion; 386 387 if (dmu_objset_type(os) != DMU_OST_ZFS) { 388 dmu_objset_rele(os, FTAG); 389 return (B_TRUE); 390 } 391 /* XXX reading from non-owned objset */ 392 if (zfs_get_zplprop(os, ZFS_PROP_VERSION, &zplversion) == 0) 393 rc = zplversion < version; 394 dmu_objset_rele(os, FTAG); 395 } 396 return (rc); 397 } 398 399 static void 400 zfs_log_history(zfs_cmd_t *zc) 401 { 402 spa_t *spa; 403 char *buf; 404 405 if ((buf = history_str_get(zc)) == NULL) 406 return; 407 408 if (spa_open(zc->zc_name, &spa, FTAG) == 0) { 409 if (spa_version(spa) >= SPA_VERSION_ZPOOL_HISTORY) 410 (void) spa_history_log(spa, buf); 411 spa_close(spa, FTAG); 412 } 413 history_str_free(buf); 414 } 415 416 /* 417 * Policy for top-level read operations (list pools). Requires no privileges, 418 * and can be used in the local zone, as there is no associated dataset. 419 */ 420 /* ARGSUSED */ 421 static int 422 zfs_secpolicy_none(zfs_cmd_t *zc, nvlist_t *innvl, cred_t *cr) 423 { 424 return (0); 425 } 426 427 /* 428 * Policy for dataset read operations (list children, get statistics). Requires 429 * no privileges, but must be visible in the local zone. 430 */ 431 /* ARGSUSED */ 432 static int 433 zfs_secpolicy_read(zfs_cmd_t *zc, nvlist_t *innvl, cred_t *cr) 434 { 435 if (INGLOBALZONE(curproc) || 436 zone_dataset_visible(zc->zc_name, NULL)) 437 return (0); 438 439 return (SET_ERROR(ENOENT)); 440 } 441 442 static int 443 zfs_dozonecheck_impl(const char *dataset, uint64_t zoned, cred_t *cr) 444 { 445 int writable = 1; 446 447 /* 448 * The dataset must be visible by this zone -- check this first 449 * so they don't see EPERM on something they shouldn't know about. 450 */ 451 if (!INGLOBALZONE(curproc) && 452 !zone_dataset_visible(dataset, &writable)) 453 return (SET_ERROR(ENOENT)); 454 455 if (INGLOBALZONE(curproc)) { 456 /* 457 * If the fs is zoned, only root can access it from the 458 * global zone. 459 */ 460 if (secpolicy_zfs(cr) && zoned) 461 return (SET_ERROR(EPERM)); 462 } else { 463 /* 464 * If we are in a local zone, the 'zoned' property must be set. 465 */ 466 if (!zoned) 467 return (SET_ERROR(EPERM)); 468 469 /* must be writable by this zone */ 470 if (!writable) 471 return (SET_ERROR(EPERM)); 472 } 473 return (0); 474 } 475 476 static int 477 zfs_dozonecheck(const char *dataset, cred_t *cr) 478 { 479 uint64_t zoned; 480 481 if (dsl_prop_get_integer(dataset, "zoned", &zoned, NULL)) 482 return (SET_ERROR(ENOENT)); 483 484 return (zfs_dozonecheck_impl(dataset, zoned, cr)); 485 } 486 487 static int 488 zfs_dozonecheck_ds(const char *dataset, dsl_dataset_t *ds, cred_t *cr) 489 { 490 uint64_t zoned; 491 492 if (dsl_prop_get_int_ds(ds, "zoned", &zoned)) 493 return (SET_ERROR(ENOENT)); 494 495 return (zfs_dozonecheck_impl(dataset, zoned, cr)); 496 } 497 498 static int 499 zfs_secpolicy_write_perms_ds(const char *name, dsl_dataset_t *ds, 500 const char *perm, cred_t *cr) 501 { 502 int error; 503 504 error = zfs_dozonecheck_ds(name, ds, cr); 505 if (error == 0) { 506 error = secpolicy_zfs(cr); 507 if (error != 0) 508 error = dsl_deleg_access_impl(ds, perm, cr); 509 } 510 return (error); 511 } 512 513 static int 514 zfs_secpolicy_write_perms(const char *name, const char *perm, cred_t *cr) 515 { 516 int error; 517 dsl_dataset_t *ds; 518 dsl_pool_t *dp; 519 520 /* 521 * First do a quick check for root in the global zone, which 522 * is allowed to do all write_perms. This ensures that zfs_ioc_* 523 * will get to handle nonexistent datasets. 524 */ 525 if (INGLOBALZONE(curproc) && secpolicy_zfs(cr) == 0) 526 return (0); 527 528 error = dsl_pool_hold(name, FTAG, &dp); 529 if (error != 0) 530 return (error); 531 532 error = dsl_dataset_hold(dp, name, FTAG, &ds); 533 if (error != 0) { 534 dsl_pool_rele(dp, FTAG); 535 return (error); 536 } 537 538 error = zfs_secpolicy_write_perms_ds(name, ds, perm, cr); 539 540 dsl_dataset_rele(ds, FTAG); 541 dsl_pool_rele(dp, FTAG); 542 return (error); 543 } 544 545 /* 546 * Policy for setting the security label property. 547 * 548 * Returns 0 for success, non-zero for access and other errors. 549 */ 550 static int 551 zfs_set_slabel_policy(const char *name, char *strval, cred_t *cr) 552 { 553 char ds_hexsl[MAXNAMELEN]; 554 bslabel_t ds_sl, new_sl; 555 boolean_t new_default = FALSE; 556 uint64_t zoned; 557 int needed_priv = -1; 558 int error; 559 560 /* First get the existing dataset label. */ 561 error = dsl_prop_get(name, zfs_prop_to_name(ZFS_PROP_MLSLABEL), 562 1, sizeof (ds_hexsl), &ds_hexsl, NULL); 563 if (error != 0) 564 return (SET_ERROR(EPERM)); 565 566 if (strcasecmp(strval, ZFS_MLSLABEL_DEFAULT) == 0) 567 new_default = TRUE; 568 569 /* The label must be translatable */ 570 if (!new_default && (hexstr_to_label(strval, &new_sl) != 0)) 571 return (SET_ERROR(EINVAL)); 572 573 /* 574 * In a non-global zone, disallow attempts to set a label that 575 * doesn't match that of the zone; otherwise no other checks 576 * are needed. 577 */ 578 if (!INGLOBALZONE(curproc)) { 579 if (new_default || !blequal(&new_sl, CR_SL(CRED()))) 580 return (SET_ERROR(EPERM)); 581 return (0); 582 } 583 584 /* 585 * For global-zone datasets (i.e., those whose zoned property is 586 * "off", verify that the specified new label is valid for the 587 * global zone. 588 */ 589 if (dsl_prop_get_integer(name, 590 zfs_prop_to_name(ZFS_PROP_ZONED), &zoned, NULL)) 591 return (SET_ERROR(EPERM)); 592 if (!zoned) { 593 if (zfs_check_global_label(name, strval) != 0) 594 return (SET_ERROR(EPERM)); 595 } 596 597 /* 598 * If the existing dataset label is nondefault, check if the 599 * dataset is mounted (label cannot be changed while mounted). 600 * Get the zfsvfs; if there isn't one, then the dataset isn't 601 * mounted (or isn't a dataset, doesn't exist, ...). 602 */ 603 if (strcasecmp(ds_hexsl, ZFS_MLSLABEL_DEFAULT) != 0) { 604 objset_t *os; 605 static char *setsl_tag = "setsl_tag"; 606 607 /* 608 * Try to own the dataset; abort if there is any error, 609 * (e.g., already mounted, in use, or other error). 610 */ 611 error = dmu_objset_own(name, DMU_OST_ZFS, B_TRUE, B_TRUE, 612 setsl_tag, &os); 613 if (error != 0) 614 return (SET_ERROR(EPERM)); 615 616 dmu_objset_disown(os, B_TRUE, setsl_tag); 617 618 if (new_default) { 619 needed_priv = PRIV_FILE_DOWNGRADE_SL; 620 goto out_check; 621 } 622 623 if (hexstr_to_label(strval, &new_sl) != 0) 624 return (SET_ERROR(EPERM)); 625 626 if (blstrictdom(&ds_sl, &new_sl)) 627 needed_priv = PRIV_FILE_DOWNGRADE_SL; 628 else if (blstrictdom(&new_sl, &ds_sl)) 629 needed_priv = PRIV_FILE_UPGRADE_SL; 630 } else { 631 /* dataset currently has a default label */ 632 if (!new_default) 633 needed_priv = PRIV_FILE_UPGRADE_SL; 634 } 635 636 out_check: 637 if (needed_priv != -1) 638 return (PRIV_POLICY(cr, needed_priv, B_FALSE, EPERM, NULL)); 639 return (0); 640 } 641 642 static int 643 zfs_secpolicy_setprop(const char *dsname, zfs_prop_t prop, nvpair_t *propval, 644 cred_t *cr) 645 { 646 char *strval; 647 648 /* 649 * Check permissions for special properties. 650 */ 651 switch (prop) { 652 case ZFS_PROP_ZONED: 653 /* 654 * Disallow setting of 'zoned' from within a local zone. 655 */ 656 if (!INGLOBALZONE(curproc)) 657 return (SET_ERROR(EPERM)); 658 break; 659 660 case ZFS_PROP_QUOTA: 661 case ZFS_PROP_FILESYSTEM_LIMIT: 662 case ZFS_PROP_SNAPSHOT_LIMIT: 663 if (!INGLOBALZONE(curproc)) { 664 uint64_t zoned; 665 char setpoint[ZFS_MAX_DATASET_NAME_LEN]; 666 /* 667 * Unprivileged users are allowed to modify the 668 * limit on things *under* (ie. contained by) 669 * the thing they own. 670 */ 671 if (dsl_prop_get_integer(dsname, "zoned", &zoned, 672 setpoint)) 673 return (SET_ERROR(EPERM)); 674 if (!zoned || strlen(dsname) <= strlen(setpoint)) 675 return (SET_ERROR(EPERM)); 676 } 677 break; 678 679 case ZFS_PROP_MLSLABEL: 680 if (!is_system_labeled()) 681 return (SET_ERROR(EPERM)); 682 683 if (nvpair_value_string(propval, &strval) == 0) { 684 int err; 685 686 err = zfs_set_slabel_policy(dsname, strval, CRED()); 687 if (err != 0) 688 return (err); 689 } 690 break; 691 } 692 693 return (zfs_secpolicy_write_perms(dsname, zfs_prop_to_name(prop), cr)); 694 } 695 696 /* ARGSUSED */ 697 static int 698 zfs_secpolicy_set_fsacl(zfs_cmd_t *zc, nvlist_t *innvl, cred_t *cr) 699 { 700 int error; 701 702 error = zfs_dozonecheck(zc->zc_name, cr); 703 if (error != 0) 704 return (error); 705 706 /* 707 * permission to set permissions will be evaluated later in 708 * dsl_deleg_can_allow() 709 */ 710 return (0); 711 } 712 713 /* ARGSUSED */ 714 static int 715 zfs_secpolicy_rollback(zfs_cmd_t *zc, nvlist_t *innvl, cred_t *cr) 716 { 717 return (zfs_secpolicy_write_perms(zc->zc_name, 718 ZFS_DELEG_PERM_ROLLBACK, cr)); 719 } 720 721 /* ARGSUSED */ 722 static int 723 zfs_secpolicy_send(zfs_cmd_t *zc, nvlist_t *innvl, cred_t *cr) 724 { 725 dsl_pool_t *dp; 726 dsl_dataset_t *ds; 727 char *cp; 728 int error; 729 730 /* 731 * Generate the current snapshot name from the given objsetid, then 732 * use that name for the secpolicy/zone checks. 733 */ 734 cp = strchr(zc->zc_name, '@'); 735 if (cp == NULL) 736 return (SET_ERROR(EINVAL)); 737 error = dsl_pool_hold(zc->zc_name, FTAG, &dp); 738 if (error != 0) 739 return (error); 740 741 error = dsl_dataset_hold_obj(dp, zc->zc_sendobj, FTAG, &ds); 742 if (error != 0) { 743 dsl_pool_rele(dp, FTAG); 744 return (error); 745 } 746 747 dsl_dataset_name(ds, zc->zc_name); 748 749 error = zfs_secpolicy_write_perms_ds(zc->zc_name, ds, 750 ZFS_DELEG_PERM_SEND, cr); 751 dsl_dataset_rele(ds, FTAG); 752 dsl_pool_rele(dp, FTAG); 753 754 return (error); 755 } 756 757 /* ARGSUSED */ 758 static int 759 zfs_secpolicy_send_new(zfs_cmd_t *zc, nvlist_t *innvl, cred_t *cr) 760 { 761 return (zfs_secpolicy_write_perms(zc->zc_name, 762 ZFS_DELEG_PERM_SEND, cr)); 763 } 764 765 /* ARGSUSED */ 766 static int 767 zfs_secpolicy_deleg_share(zfs_cmd_t *zc, nvlist_t *innvl, cred_t *cr) 768 { 769 vnode_t *vp; 770 int error; 771 772 if ((error = lookupname(zc->zc_value, UIO_SYSSPACE, 773 NO_FOLLOW, NULL, &vp)) != 0) 774 return (error); 775 776 /* Now make sure mntpnt and dataset are ZFS */ 777 778 if (vp->v_vfsp->vfs_fstype != zfsfstype || 779 (strcmp((char *)refstr_value(vp->v_vfsp->vfs_resource), 780 zc->zc_name) != 0)) { 781 VN_RELE(vp); 782 return (SET_ERROR(EPERM)); 783 } 784 785 VN_RELE(vp); 786 return (dsl_deleg_access(zc->zc_name, 787 ZFS_DELEG_PERM_SHARE, cr)); 788 } 789 790 int 791 zfs_secpolicy_share(zfs_cmd_t *zc, nvlist_t *innvl, cred_t *cr) 792 { 793 if (secpolicy_nfs(cr) == 0) { 794 return (0); 795 } else { 796 return (zfs_secpolicy_deleg_share(zc, innvl, cr)); 797 } 798 } 799 800 int 801 zfs_secpolicy_smb_acl(zfs_cmd_t *zc, nvlist_t *innvl, cred_t *cr) 802 { 803 if (secpolicy_smb(cr) == 0) { 804 return (0); 805 } else { 806 return (zfs_secpolicy_deleg_share(zc, innvl, cr)); 807 } 808 } 809 810 static int 811 zfs_get_parent(const char *datasetname, char *parent, int parentsize) 812 { 813 char *cp; 814 815 /* 816 * Remove the @bla or /bla from the end of the name to get the parent. 817 */ 818 (void) strncpy(parent, datasetname, parentsize); 819 cp = strrchr(parent, '@'); 820 if (cp != NULL) { 821 cp[0] = '\0'; 822 } else { 823 cp = strrchr(parent, '/'); 824 if (cp == NULL) 825 return (SET_ERROR(ENOENT)); 826 cp[0] = '\0'; 827 } 828 829 return (0); 830 } 831 832 int 833 zfs_secpolicy_destroy_perms(const char *name, cred_t *cr) 834 { 835 int error; 836 837 if ((error = zfs_secpolicy_write_perms(name, 838 ZFS_DELEG_PERM_MOUNT, cr)) != 0) 839 return (error); 840 841 return (zfs_secpolicy_write_perms(name, ZFS_DELEG_PERM_DESTROY, cr)); 842 } 843 844 /* ARGSUSED */ 845 static int 846 zfs_secpolicy_destroy(zfs_cmd_t *zc, nvlist_t *innvl, cred_t *cr) 847 { 848 return (zfs_secpolicy_destroy_perms(zc->zc_name, cr)); 849 } 850 851 /* 852 * Destroying snapshots with delegated permissions requires 853 * descendant mount and destroy permissions. 854 */ 855 /* ARGSUSED */ 856 static int 857 zfs_secpolicy_destroy_snaps(zfs_cmd_t *zc, nvlist_t *innvl, cred_t *cr) 858 { 859 nvlist_t *snaps; 860 nvpair_t *pair, *nextpair; 861 int error = 0; 862 863 if (nvlist_lookup_nvlist(innvl, "snaps", &snaps) != 0) 864 return (SET_ERROR(EINVAL)); 865 for (pair = nvlist_next_nvpair(snaps, NULL); pair != NULL; 866 pair = nextpair) { 867 nextpair = nvlist_next_nvpair(snaps, pair); 868 error = zfs_secpolicy_destroy_perms(nvpair_name(pair), cr); 869 if (error == ENOENT) { 870 /* 871 * Ignore any snapshots that don't exist (we consider 872 * them "already destroyed"). Remove the name from the 873 * nvl here in case the snapshot is created between 874 * now and when we try to destroy it (in which case 875 * we don't want to destroy it since we haven't 876 * checked for permission). 877 */ 878 fnvlist_remove_nvpair(snaps, pair); 879 error = 0; 880 } 881 if (error != 0) 882 break; 883 } 884 885 return (error); 886 } 887 888 int 889 zfs_secpolicy_rename_perms(const char *from, const char *to, cred_t *cr) 890 { 891 char parentname[ZFS_MAX_DATASET_NAME_LEN]; 892 int error; 893 894 if ((error = zfs_secpolicy_write_perms(from, 895 ZFS_DELEG_PERM_RENAME, cr)) != 0) 896 return (error); 897 898 if ((error = zfs_secpolicy_write_perms(from, 899 ZFS_DELEG_PERM_MOUNT, cr)) != 0) 900 return (error); 901 902 if ((error = zfs_get_parent(to, parentname, 903 sizeof (parentname))) != 0) 904 return (error); 905 906 if ((error = zfs_secpolicy_write_perms(parentname, 907 ZFS_DELEG_PERM_CREATE, cr)) != 0) 908 return (error); 909 910 if ((error = zfs_secpolicy_write_perms(parentname, 911 ZFS_DELEG_PERM_MOUNT, cr)) != 0) 912 return (error); 913 914 return (error); 915 } 916 917 /* ARGSUSED */ 918 static int 919 zfs_secpolicy_rename(zfs_cmd_t *zc, nvlist_t *innvl, cred_t *cr) 920 { 921 return (zfs_secpolicy_rename_perms(zc->zc_name, zc->zc_value, cr)); 922 } 923 924 /* ARGSUSED */ 925 static int 926 zfs_secpolicy_promote(zfs_cmd_t *zc, nvlist_t *innvl, cred_t *cr) 927 { 928 dsl_pool_t *dp; 929 dsl_dataset_t *clone; 930 int error; 931 932 error = zfs_secpolicy_write_perms(zc->zc_name, 933 ZFS_DELEG_PERM_PROMOTE, cr); 934 if (error != 0) 935 return (error); 936 937 error = dsl_pool_hold(zc->zc_name, FTAG, &dp); 938 if (error != 0) 939 return (error); 940 941 error = dsl_dataset_hold(dp, zc->zc_name, FTAG, &clone); 942 943 if (error == 0) { 944 char parentname[ZFS_MAX_DATASET_NAME_LEN]; 945 dsl_dataset_t *origin = NULL; 946 dsl_dir_t *dd; 947 dd = clone->ds_dir; 948 949 error = dsl_dataset_hold_obj(dd->dd_pool, 950 dsl_dir_phys(dd)->dd_origin_obj, FTAG, &origin); 951 if (error != 0) { 952 dsl_dataset_rele(clone, FTAG); 953 dsl_pool_rele(dp, FTAG); 954 return (error); 955 } 956 957 error = zfs_secpolicy_write_perms_ds(zc->zc_name, clone, 958 ZFS_DELEG_PERM_MOUNT, cr); 959 960 dsl_dataset_name(origin, parentname); 961 if (error == 0) { 962 error = zfs_secpolicy_write_perms_ds(parentname, origin, 963 ZFS_DELEG_PERM_PROMOTE, cr); 964 } 965 dsl_dataset_rele(clone, FTAG); 966 dsl_dataset_rele(origin, FTAG); 967 } 968 dsl_pool_rele(dp, FTAG); 969 return (error); 970 } 971 972 /* ARGSUSED */ 973 static int 974 zfs_secpolicy_recv(zfs_cmd_t *zc, nvlist_t *innvl, cred_t *cr) 975 { 976 int error; 977 978 if ((error = zfs_secpolicy_write_perms(zc->zc_name, 979 ZFS_DELEG_PERM_RECEIVE, cr)) != 0) 980 return (error); 981 982 if ((error = zfs_secpolicy_write_perms(zc->zc_name, 983 ZFS_DELEG_PERM_MOUNT, cr)) != 0) 984 return (error); 985 986 return (zfs_secpolicy_write_perms(zc->zc_name, 987 ZFS_DELEG_PERM_CREATE, cr)); 988 } 989 990 int 991 zfs_secpolicy_snapshot_perms(const char *name, cred_t *cr) 992 { 993 return (zfs_secpolicy_write_perms(name, 994 ZFS_DELEG_PERM_SNAPSHOT, cr)); 995 } 996 997 /* 998 * Check for permission to create each snapshot in the nvlist. 999 */ 1000 /* ARGSUSED */ 1001 static int 1002 zfs_secpolicy_snapshot(zfs_cmd_t *zc, nvlist_t *innvl, cred_t *cr) 1003 { 1004 nvlist_t *snaps; 1005 int error = 0; 1006 nvpair_t *pair; 1007 1008 if (nvlist_lookup_nvlist(innvl, "snaps", &snaps) != 0) 1009 return (SET_ERROR(EINVAL)); 1010 for (pair = nvlist_next_nvpair(snaps, NULL); pair != NULL; 1011 pair = nvlist_next_nvpair(snaps, pair)) { 1012 char *name = nvpair_name(pair); 1013 char *atp = strchr(name, '@'); 1014 1015 if (atp == NULL) { 1016 error = SET_ERROR(EINVAL); 1017 break; 1018 } 1019 *atp = '\0'; 1020 error = zfs_secpolicy_snapshot_perms(name, cr); 1021 *atp = '@'; 1022 if (error != 0) 1023 break; 1024 } 1025 return (error); 1026 } 1027 1028 /* 1029 * Check for permission to create each snapshot in the nvlist. 1030 */ 1031 /* ARGSUSED */ 1032 static int 1033 zfs_secpolicy_bookmark(zfs_cmd_t *zc, nvlist_t *innvl, cred_t *cr) 1034 { 1035 int error = 0; 1036 1037 for (nvpair_t *pair = nvlist_next_nvpair(innvl, NULL); 1038 pair != NULL; pair = nvlist_next_nvpair(innvl, pair)) { 1039 char *name = nvpair_name(pair); 1040 char *hashp = strchr(name, '#'); 1041 1042 if (hashp == NULL) { 1043 error = SET_ERROR(EINVAL); 1044 break; 1045 } 1046 *hashp = '\0'; 1047 error = zfs_secpolicy_write_perms(name, 1048 ZFS_DELEG_PERM_BOOKMARK, cr); 1049 *hashp = '#'; 1050 if (error != 0) 1051 break; 1052 } 1053 return (error); 1054 } 1055 1056 /* ARGSUSED */ 1057 static int 1058 zfs_secpolicy_remap(zfs_cmd_t *zc, nvlist_t *innvl, cred_t *cr) 1059 { 1060 return (zfs_secpolicy_write_perms(zc->zc_name, 1061 ZFS_DELEG_PERM_REMAP, cr)); 1062 } 1063 1064 /* ARGSUSED */ 1065 static int 1066 zfs_secpolicy_destroy_bookmarks(zfs_cmd_t *zc, nvlist_t *innvl, cred_t *cr) 1067 { 1068 nvpair_t *pair, *nextpair; 1069 int error = 0; 1070 1071 for (pair = nvlist_next_nvpair(innvl, NULL); pair != NULL; 1072 pair = nextpair) { 1073 char *name = nvpair_name(pair); 1074 char *hashp = strchr(name, '#'); 1075 nextpair = nvlist_next_nvpair(innvl, pair); 1076 1077 if (hashp == NULL) { 1078 error = SET_ERROR(EINVAL); 1079 break; 1080 } 1081 1082 *hashp = '\0'; 1083 error = zfs_secpolicy_write_perms(name, 1084 ZFS_DELEG_PERM_DESTROY, cr); 1085 *hashp = '#'; 1086 if (error == ENOENT) { 1087 /* 1088 * Ignore any filesystems that don't exist (we consider 1089 * their bookmarks "already destroyed"). Remove 1090 * the name from the nvl here in case the filesystem 1091 * is created between now and when we try to destroy 1092 * the bookmark (in which case we don't want to 1093 * destroy it since we haven't checked for permission). 1094 */ 1095 fnvlist_remove_nvpair(innvl, pair); 1096 error = 0; 1097 } 1098 if (error != 0) 1099 break; 1100 } 1101 1102 return (error); 1103 } 1104 1105 /* ARGSUSED */ 1106 static int 1107 zfs_secpolicy_log_history(zfs_cmd_t *zc, nvlist_t *innvl, cred_t *cr) 1108 { 1109 /* 1110 * Even root must have a proper TSD so that we know what pool 1111 * to log to. 1112 */ 1113 if (tsd_get(zfs_allow_log_key) == NULL) 1114 return (SET_ERROR(EPERM)); 1115 return (0); 1116 } 1117 1118 static int 1119 zfs_secpolicy_create_clone(zfs_cmd_t *zc, nvlist_t *innvl, cred_t *cr) 1120 { 1121 char parentname[ZFS_MAX_DATASET_NAME_LEN]; 1122 int error; 1123 char *origin; 1124 1125 if ((error = zfs_get_parent(zc->zc_name, parentname, 1126 sizeof (parentname))) != 0) 1127 return (error); 1128 1129 if (nvlist_lookup_string(innvl, "origin", &origin) == 0 && 1130 (error = zfs_secpolicy_write_perms(origin, 1131 ZFS_DELEG_PERM_CLONE, cr)) != 0) 1132 return (error); 1133 1134 if ((error = zfs_secpolicy_write_perms(parentname, 1135 ZFS_DELEG_PERM_CREATE, cr)) != 0) 1136 return (error); 1137 1138 return (zfs_secpolicy_write_perms(parentname, 1139 ZFS_DELEG_PERM_MOUNT, cr)); 1140 } 1141 1142 /* 1143 * Policy for pool operations - create/destroy pools, add vdevs, etc. Requires 1144 * SYS_CONFIG privilege, which is not available in a local zone. 1145 */ 1146 /* ARGSUSED */ 1147 static int 1148 zfs_secpolicy_config(zfs_cmd_t *zc, nvlist_t *innvl, cred_t *cr) 1149 { 1150 if (secpolicy_sys_config(cr, B_FALSE) != 0) 1151 return (SET_ERROR(EPERM)); 1152 1153 return (0); 1154 } 1155 1156 /* 1157 * Policy for object to name lookups. 1158 */ 1159 /* ARGSUSED */ 1160 static int 1161 zfs_secpolicy_diff(zfs_cmd_t *zc, nvlist_t *innvl, cred_t *cr) 1162 { 1163 int error; 1164 1165 if ((error = secpolicy_sys_config(cr, B_FALSE)) == 0) 1166 return (0); 1167 1168 error = zfs_secpolicy_write_perms(zc->zc_name, ZFS_DELEG_PERM_DIFF, cr); 1169 return (error); 1170 } 1171 1172 /* 1173 * Policy for fault injection. Requires all privileges. 1174 */ 1175 /* ARGSUSED */ 1176 static int 1177 zfs_secpolicy_inject(zfs_cmd_t *zc, nvlist_t *innvl, cred_t *cr) 1178 { 1179 return (secpolicy_zinject(cr)); 1180 } 1181 1182 /* ARGSUSED */ 1183 static int 1184 zfs_secpolicy_inherit_prop(zfs_cmd_t *zc, nvlist_t *innvl, cred_t *cr) 1185 { 1186 zfs_prop_t prop = zfs_name_to_prop(zc->zc_value); 1187 1188 if (prop == ZPROP_INVAL) { 1189 if (!zfs_prop_user(zc->zc_value)) 1190 return (SET_ERROR(EINVAL)); 1191 return (zfs_secpolicy_write_perms(zc->zc_name, 1192 ZFS_DELEG_PERM_USERPROP, cr)); 1193 } else { 1194 return (zfs_secpolicy_setprop(zc->zc_name, prop, 1195 NULL, cr)); 1196 } 1197 } 1198 1199 static int 1200 zfs_secpolicy_userspace_one(zfs_cmd_t *zc, nvlist_t *innvl, cred_t *cr) 1201 { 1202 int err = zfs_secpolicy_read(zc, innvl, cr); 1203 if (err) 1204 return (err); 1205 1206 if (zc->zc_objset_type >= ZFS_NUM_USERQUOTA_PROPS) 1207 return (SET_ERROR(EINVAL)); 1208 1209 if (zc->zc_value[0] == 0) { 1210 /* 1211 * They are asking about a posix uid/gid. If it's 1212 * themself, allow it. 1213 */ 1214 if (zc->zc_objset_type == ZFS_PROP_USERUSED || 1215 zc->zc_objset_type == ZFS_PROP_USERQUOTA || 1216 zc->zc_objset_type == ZFS_PROP_USEROBJUSED || 1217 zc->zc_objset_type == ZFS_PROP_USEROBJQUOTA) { 1218 if (zc->zc_guid == crgetuid(cr)) 1219 return (0); 1220 } else if (zc->zc_objset_type == ZFS_PROP_GROUPUSED || 1221 zc->zc_objset_type == ZFS_PROP_GROUPQUOTA || 1222 zc->zc_objset_type == ZFS_PROP_GROUPOBJUSED || 1223 zc->zc_objset_type == ZFS_PROP_GROUPOBJQUOTA) { 1224 if (groupmember(zc->zc_guid, cr)) 1225 return (0); 1226 } 1227 /* else is for project quota/used */ 1228 } 1229 1230 return (zfs_secpolicy_write_perms(zc->zc_name, 1231 userquota_perms[zc->zc_objset_type], cr)); 1232 } 1233 1234 static int 1235 zfs_secpolicy_userspace_many(zfs_cmd_t *zc, nvlist_t *innvl, cred_t *cr) 1236 { 1237 int err = zfs_secpolicy_read(zc, innvl, cr); 1238 if (err) 1239 return (err); 1240 1241 if (zc->zc_objset_type >= ZFS_NUM_USERQUOTA_PROPS) 1242 return (SET_ERROR(EINVAL)); 1243 1244 return (zfs_secpolicy_write_perms(zc->zc_name, 1245 userquota_perms[zc->zc_objset_type], cr)); 1246 } 1247 1248 /* ARGSUSED */ 1249 static int 1250 zfs_secpolicy_userspace_upgrade(zfs_cmd_t *zc, nvlist_t *innvl, cred_t *cr) 1251 { 1252 return (zfs_secpolicy_setprop(zc->zc_name, ZFS_PROP_VERSION, 1253 NULL, cr)); 1254 } 1255 1256 /* ARGSUSED */ 1257 static int 1258 zfs_secpolicy_hold(zfs_cmd_t *zc, nvlist_t *innvl, cred_t *cr) 1259 { 1260 nvpair_t *pair; 1261 nvlist_t *holds; 1262 int error; 1263 1264 error = nvlist_lookup_nvlist(innvl, "holds", &holds); 1265 if (error != 0) 1266 return (SET_ERROR(EINVAL)); 1267 1268 for (pair = nvlist_next_nvpair(holds, NULL); pair != NULL; 1269 pair = nvlist_next_nvpair(holds, pair)) { 1270 char fsname[ZFS_MAX_DATASET_NAME_LEN]; 1271 error = dmu_fsname(nvpair_name(pair), fsname); 1272 if (error != 0) 1273 return (error); 1274 error = zfs_secpolicy_write_perms(fsname, 1275 ZFS_DELEG_PERM_HOLD, cr); 1276 if (error != 0) 1277 return (error); 1278 } 1279 return (0); 1280 } 1281 1282 /* ARGSUSED */ 1283 static int 1284 zfs_secpolicy_release(zfs_cmd_t *zc, nvlist_t *innvl, cred_t *cr) 1285 { 1286 nvpair_t *pair; 1287 int error; 1288 1289 for (pair = nvlist_next_nvpair(innvl, NULL); pair != NULL; 1290 pair = nvlist_next_nvpair(innvl, pair)) { 1291 char fsname[ZFS_MAX_DATASET_NAME_LEN]; 1292 error = dmu_fsname(nvpair_name(pair), fsname); 1293 if (error != 0) 1294 return (error); 1295 error = zfs_secpolicy_write_perms(fsname, 1296 ZFS_DELEG_PERM_RELEASE, cr); 1297 if (error != 0) 1298 return (error); 1299 } 1300 return (0); 1301 } 1302 1303 /* ARGSUSED */ 1304 static int 1305 zfs_secpolicy_load_key(zfs_cmd_t *zc, nvlist_t *innvl, cred_t *cr) 1306 { 1307 return (zfs_secpolicy_write_perms(zc->zc_name, 1308 ZFS_DELEG_PERM_LOAD_KEY, cr)); 1309 } 1310 1311 /* ARGSUSED */ 1312 static int 1313 zfs_secpolicy_change_key(zfs_cmd_t *zc, nvlist_t *innvl, cred_t *cr) 1314 { 1315 return (zfs_secpolicy_write_perms(zc->zc_name, 1316 ZFS_DELEG_PERM_CHANGE_KEY, cr)); 1317 } 1318 1319 /* 1320 * Policy for allowing temporary snapshots to be taken or released 1321 */ 1322 static int 1323 zfs_secpolicy_tmp_snapshot(zfs_cmd_t *zc, nvlist_t *innvl, cred_t *cr) 1324 { 1325 /* 1326 * A temporary snapshot is the same as a snapshot, 1327 * hold, destroy and release all rolled into one. 1328 * Delegated diff alone is sufficient that we allow this. 1329 */ 1330 int error; 1331 1332 if ((error = zfs_secpolicy_write_perms(zc->zc_name, 1333 ZFS_DELEG_PERM_DIFF, cr)) == 0) 1334 return (0); 1335 1336 error = zfs_secpolicy_snapshot_perms(zc->zc_name, cr); 1337 if (error == 0) 1338 error = zfs_secpolicy_hold(zc, innvl, cr); 1339 if (error == 0) 1340 error = zfs_secpolicy_release(zc, innvl, cr); 1341 if (error == 0) 1342 error = zfs_secpolicy_destroy(zc, innvl, cr); 1343 return (error); 1344 } 1345 1346 /* 1347 * Returns the nvlist as specified by the user in the zfs_cmd_t. 1348 */ 1349 static int 1350 get_nvlist(uint64_t nvl, uint64_t size, int iflag, nvlist_t **nvp) 1351 { 1352 char *packed; 1353 int error; 1354 nvlist_t *list = NULL; 1355 1356 /* 1357 * Read in and unpack the user-supplied nvlist. 1358 */ 1359 if (size == 0) 1360 return (SET_ERROR(EINVAL)); 1361 1362 packed = kmem_alloc(size, KM_SLEEP); 1363 1364 if ((error = ddi_copyin((void *)(uintptr_t)nvl, packed, size, 1365 iflag)) != 0) { 1366 kmem_free(packed, size); 1367 return (SET_ERROR(EFAULT)); 1368 } 1369 1370 if ((error = nvlist_unpack(packed, size, &list, 0)) != 0) { 1371 kmem_free(packed, size); 1372 return (error); 1373 } 1374 1375 kmem_free(packed, size); 1376 1377 *nvp = list; 1378 return (0); 1379 } 1380 1381 /* 1382 * Reduce the size of this nvlist until it can be serialized in 'max' bytes. 1383 * Entries will be removed from the end of the nvlist, and one int32 entry 1384 * named "N_MORE_ERRORS" will be added indicating how many entries were 1385 * removed. 1386 */ 1387 static int 1388 nvlist_smush(nvlist_t *errors, size_t max) 1389 { 1390 size_t size; 1391 1392 size = fnvlist_size(errors); 1393 1394 if (size > max) { 1395 nvpair_t *more_errors; 1396 int n = 0; 1397 1398 if (max < 1024) 1399 return (SET_ERROR(ENOMEM)); 1400 1401 fnvlist_add_int32(errors, ZPROP_N_MORE_ERRORS, 0); 1402 more_errors = nvlist_prev_nvpair(errors, NULL); 1403 1404 do { 1405 nvpair_t *pair = nvlist_prev_nvpair(errors, 1406 more_errors); 1407 fnvlist_remove_nvpair(errors, pair); 1408 n++; 1409 size = fnvlist_size(errors); 1410 } while (size > max); 1411 1412 fnvlist_remove_nvpair(errors, more_errors); 1413 fnvlist_add_int32(errors, ZPROP_N_MORE_ERRORS, n); 1414 ASSERT3U(fnvlist_size(errors), <=, max); 1415 } 1416 1417 return (0); 1418 } 1419 1420 static int 1421 put_nvlist(zfs_cmd_t *zc, nvlist_t *nvl) 1422 { 1423 char *packed = NULL; 1424 int error = 0; 1425 size_t size; 1426 1427 size = fnvlist_size(nvl); 1428 1429 if (size > zc->zc_nvlist_dst_size) { 1430 error = SET_ERROR(ENOMEM); 1431 } else { 1432 packed = fnvlist_pack(nvl, &size); 1433 if (ddi_copyout(packed, (void *)(uintptr_t)zc->zc_nvlist_dst, 1434 size, zc->zc_iflags) != 0) 1435 error = SET_ERROR(EFAULT); 1436 fnvlist_pack_free(packed, size); 1437 } 1438 1439 zc->zc_nvlist_dst_size = size; 1440 zc->zc_nvlist_dst_filled = B_TRUE; 1441 return (error); 1442 } 1443 1444 int 1445 getzfsvfs_impl(objset_t *os, zfsvfs_t **zfvp) 1446 { 1447 int error = 0; 1448 if (dmu_objset_type(os) != DMU_OST_ZFS) { 1449 return (SET_ERROR(EINVAL)); 1450 } 1451 1452 mutex_enter(&os->os_user_ptr_lock); 1453 *zfvp = dmu_objset_get_user(os); 1454 if (*zfvp) { 1455 VFS_HOLD((*zfvp)->z_vfs); 1456 } else { 1457 error = SET_ERROR(ESRCH); 1458 } 1459 mutex_exit(&os->os_user_ptr_lock); 1460 return (error); 1461 } 1462 1463 int 1464 getzfsvfs(const char *dsname, zfsvfs_t **zfvp) 1465 { 1466 objset_t *os; 1467 int error; 1468 1469 error = dmu_objset_hold(dsname, FTAG, &os); 1470 if (error != 0) 1471 return (error); 1472 1473 error = getzfsvfs_impl(os, zfvp); 1474 dmu_objset_rele(os, FTAG); 1475 return (error); 1476 } 1477 1478 /* 1479 * Find a zfsvfs_t for a mounted filesystem, or create our own, in which 1480 * case its z_vfs will be NULL, and it will be opened as the owner. 1481 * If 'writer' is set, the z_teardown_lock will be held for RW_WRITER, 1482 * which prevents all vnode ops from running. 1483 */ 1484 static int 1485 zfsvfs_hold(const char *name, void *tag, zfsvfs_t **zfvp, boolean_t writer) 1486 { 1487 int error = 0; 1488 1489 if (getzfsvfs(name, zfvp) != 0) 1490 error = zfsvfs_create(name, B_FALSE, zfvp); 1491 if (error == 0) { 1492 rrm_enter(&(*zfvp)->z_teardown_lock, (writer) ? RW_WRITER : 1493 RW_READER, tag); 1494 if ((*zfvp)->z_unmounted) { 1495 /* 1496 * XXX we could probably try again, since the unmounting 1497 * thread should be just about to disassociate the 1498 * objset from the zfsvfs. 1499 */ 1500 rrm_exit(&(*zfvp)->z_teardown_lock, tag); 1501 return (SET_ERROR(EBUSY)); 1502 } 1503 } 1504 return (error); 1505 } 1506 1507 static void 1508 zfsvfs_rele(zfsvfs_t *zfsvfs, void *tag) 1509 { 1510 rrm_exit(&zfsvfs->z_teardown_lock, tag); 1511 1512 if (zfsvfs->z_vfs) { 1513 VFS_RELE(zfsvfs->z_vfs); 1514 } else { 1515 dmu_objset_disown(zfsvfs->z_os, B_TRUE, zfsvfs); 1516 zfsvfs_free(zfsvfs); 1517 } 1518 } 1519 1520 static int 1521 zfs_ioc_pool_create(zfs_cmd_t *zc) 1522 { 1523 int error; 1524 nvlist_t *config, *props = NULL; 1525 nvlist_t *rootprops = NULL; 1526 nvlist_t *zplprops = NULL; 1527 char *spa_name = zc->zc_name; 1528 dsl_crypto_params_t *dcp = NULL; 1529 1530 if (error = get_nvlist(zc->zc_nvlist_conf, zc->zc_nvlist_conf_size, 1531 zc->zc_iflags, &config)) 1532 return (error); 1533 1534 if (zc->zc_nvlist_src_size != 0 && (error = 1535 get_nvlist(zc->zc_nvlist_src, zc->zc_nvlist_src_size, 1536 zc->zc_iflags, &props))) { 1537 nvlist_free(config); 1538 return (error); 1539 } 1540 1541 if (props) { 1542 nvlist_t *nvl = NULL; 1543 nvlist_t *hidden_args = NULL; 1544 uint64_t version = SPA_VERSION; 1545 char *tname; 1546 1547 (void) nvlist_lookup_uint64(props, 1548 zpool_prop_to_name(ZPOOL_PROP_VERSION), &version); 1549 if (!SPA_VERSION_IS_SUPPORTED(version)) { 1550 error = SET_ERROR(EINVAL); 1551 goto pool_props_bad; 1552 } 1553 (void) nvlist_lookup_nvlist(props, ZPOOL_ROOTFS_PROPS, &nvl); 1554 if (nvl) { 1555 error = nvlist_dup(nvl, &rootprops, KM_SLEEP); 1556 if (error != 0) { 1557 nvlist_free(config); 1558 nvlist_free(props); 1559 return (error); 1560 } 1561 (void) nvlist_remove_all(props, ZPOOL_ROOTFS_PROPS); 1562 } 1563 1564 (void) nvlist_lookup_nvlist(props, ZPOOL_HIDDEN_ARGS, 1565 &hidden_args); 1566 error = dsl_crypto_params_create_nvlist(DCP_CMD_NONE, 1567 rootprops, hidden_args, &dcp); 1568 if (error != 0) { 1569 nvlist_free(config); 1570 nvlist_free(props); 1571 return (error); 1572 } 1573 (void) nvlist_remove_all(props, ZPOOL_HIDDEN_ARGS); 1574 1575 VERIFY(nvlist_alloc(&zplprops, NV_UNIQUE_NAME, KM_SLEEP) == 0); 1576 error = zfs_fill_zplprops_root(version, rootprops, 1577 zplprops, NULL); 1578 if (error != 0) 1579 goto pool_props_bad; 1580 1581 if (nvlist_lookup_string(props, 1582 zpool_prop_to_name(ZPOOL_PROP_TNAME), &tname) == 0) 1583 spa_name = tname; 1584 } 1585 1586 error = spa_create(zc->zc_name, config, props, zplprops, dcp); 1587 1588 /* 1589 * Set the remaining root properties 1590 */ 1591 if (!error && (error = zfs_set_prop_nvlist(spa_name, 1592 ZPROP_SRC_LOCAL, rootprops, NULL)) != 0) 1593 (void) spa_destroy(spa_name); 1594 1595 pool_props_bad: 1596 nvlist_free(rootprops); 1597 nvlist_free(zplprops); 1598 nvlist_free(config); 1599 nvlist_free(props); 1600 dsl_crypto_params_free(dcp, !!error); 1601 1602 return (error); 1603 } 1604 1605 static int 1606 zfs_ioc_pool_destroy(zfs_cmd_t *zc) 1607 { 1608 int error; 1609 zfs_log_history(zc); 1610 error = spa_destroy(zc->zc_name); 1611 if (error == 0) 1612 zvol_remove_minors(zc->zc_name); 1613 return (error); 1614 } 1615 1616 static int 1617 zfs_ioc_pool_import(zfs_cmd_t *zc) 1618 { 1619 nvlist_t *config, *props = NULL; 1620 uint64_t guid; 1621 int error; 1622 1623 if ((error = get_nvlist(zc->zc_nvlist_conf, zc->zc_nvlist_conf_size, 1624 zc->zc_iflags, &config)) != 0) 1625 return (error); 1626 1627 if (zc->zc_nvlist_src_size != 0 && (error = 1628 get_nvlist(zc->zc_nvlist_src, zc->zc_nvlist_src_size, 1629 zc->zc_iflags, &props))) { 1630 nvlist_free(config); 1631 return (error); 1632 } 1633 1634 if (nvlist_lookup_uint64(config, ZPOOL_CONFIG_POOL_GUID, &guid) != 0 || 1635 guid != zc->zc_guid) 1636 error = SET_ERROR(EINVAL); 1637 else 1638 error = spa_import(zc->zc_name, config, props, zc->zc_cookie); 1639 1640 if (zc->zc_nvlist_dst != 0) { 1641 int err; 1642 1643 if ((err = put_nvlist(zc, config)) != 0) 1644 error = err; 1645 } 1646 1647 nvlist_free(config); 1648 1649 nvlist_free(props); 1650 1651 return (error); 1652 } 1653 1654 static int 1655 zfs_ioc_pool_export(zfs_cmd_t *zc) 1656 { 1657 int error; 1658 boolean_t force = (boolean_t)zc->zc_cookie; 1659 boolean_t hardforce = (boolean_t)zc->zc_guid; 1660 1661 zfs_log_history(zc); 1662 error = spa_export(zc->zc_name, NULL, force, hardforce); 1663 if (error == 0) 1664 zvol_remove_minors(zc->zc_name); 1665 return (error); 1666 } 1667 1668 static int 1669 zfs_ioc_pool_configs(zfs_cmd_t *zc) 1670 { 1671 nvlist_t *configs; 1672 int error; 1673 1674 if ((configs = spa_all_configs(&zc->zc_cookie)) == NULL) 1675 return (SET_ERROR(EEXIST)); 1676 1677 error = put_nvlist(zc, configs); 1678 1679 nvlist_free(configs); 1680 1681 return (error); 1682 } 1683 1684 /* 1685 * inputs: 1686 * zc_name name of the pool 1687 * 1688 * outputs: 1689 * zc_cookie real errno 1690 * zc_nvlist_dst config nvlist 1691 * zc_nvlist_dst_size size of config nvlist 1692 */ 1693 static int 1694 zfs_ioc_pool_stats(zfs_cmd_t *zc) 1695 { 1696 nvlist_t *config; 1697 int error; 1698 int ret = 0; 1699 1700 error = spa_get_stats(zc->zc_name, &config, zc->zc_value, 1701 sizeof (zc->zc_value)); 1702 1703 if (config != NULL) { 1704 ret = put_nvlist(zc, config); 1705 nvlist_free(config); 1706 1707 /* 1708 * The config may be present even if 'error' is non-zero. 1709 * In this case we return success, and preserve the real errno 1710 * in 'zc_cookie'. 1711 */ 1712 zc->zc_cookie = error; 1713 } else { 1714 ret = error; 1715 } 1716 1717 return (ret); 1718 } 1719 1720 /* 1721 * Try to import the given pool, returning pool stats as appropriate so that 1722 * user land knows which devices are available and overall pool health. 1723 */ 1724 static int 1725 zfs_ioc_pool_tryimport(zfs_cmd_t *zc) 1726 { 1727 nvlist_t *tryconfig, *config; 1728 int error; 1729 1730 if ((error = get_nvlist(zc->zc_nvlist_conf, zc->zc_nvlist_conf_size, 1731 zc->zc_iflags, &tryconfig)) != 0) 1732 return (error); 1733 1734 config = spa_tryimport(tryconfig); 1735 1736 nvlist_free(tryconfig); 1737 1738 if (config == NULL) 1739 return (SET_ERROR(EINVAL)); 1740 1741 error = put_nvlist(zc, config); 1742 nvlist_free(config); 1743 1744 return (error); 1745 } 1746 1747 /* 1748 * inputs: 1749 * zc_name name of the pool 1750 * zc_cookie scan func (pool_scan_func_t) 1751 * zc_flags scrub pause/resume flag (pool_scrub_cmd_t) 1752 */ 1753 static int 1754 zfs_ioc_pool_scan(zfs_cmd_t *zc) 1755 { 1756 spa_t *spa; 1757 int error; 1758 1759 if ((error = spa_open(zc->zc_name, &spa, FTAG)) != 0) 1760 return (error); 1761 1762 if (zc->zc_flags >= POOL_SCRUB_FLAGS_END) 1763 return (SET_ERROR(EINVAL)); 1764 1765 if (zc->zc_flags == POOL_SCRUB_PAUSE) 1766 error = spa_scrub_pause_resume(spa, POOL_SCRUB_PAUSE); 1767 else if (zc->zc_cookie == POOL_SCAN_NONE) 1768 error = spa_scan_stop(spa); 1769 else 1770 error = spa_scan(spa, zc->zc_cookie); 1771 1772 spa_close(spa, FTAG); 1773 1774 return (error); 1775 } 1776 1777 static int 1778 zfs_ioc_pool_freeze(zfs_cmd_t *zc) 1779 { 1780 spa_t *spa; 1781 int error; 1782 1783 error = spa_open(zc->zc_name, &spa, FTAG); 1784 if (error == 0) { 1785 spa_freeze(spa); 1786 spa_close(spa, FTAG); 1787 } 1788 return (error); 1789 } 1790 1791 static int 1792 zfs_ioc_pool_upgrade(zfs_cmd_t *zc) 1793 { 1794 spa_t *spa; 1795 int error; 1796 1797 if ((error = spa_open(zc->zc_name, &spa, FTAG)) != 0) 1798 return (error); 1799 1800 if (zc->zc_cookie < spa_version(spa) || 1801 !SPA_VERSION_IS_SUPPORTED(zc->zc_cookie)) { 1802 spa_close(spa, FTAG); 1803 return (SET_ERROR(EINVAL)); 1804 } 1805 1806 spa_upgrade(spa, zc->zc_cookie); 1807 spa_close(spa, FTAG); 1808 1809 return (error); 1810 } 1811 1812 static int 1813 zfs_ioc_pool_get_history(zfs_cmd_t *zc) 1814 { 1815 spa_t *spa; 1816 char *hist_buf; 1817 uint64_t size; 1818 int error; 1819 1820 if ((size = zc->zc_history_len) == 0) 1821 return (SET_ERROR(EINVAL)); 1822 1823 if ((error = spa_open(zc->zc_name, &spa, FTAG)) != 0) 1824 return (error); 1825 1826 if (spa_version(spa) < SPA_VERSION_ZPOOL_HISTORY) { 1827 spa_close(spa, FTAG); 1828 return (SET_ERROR(ENOTSUP)); 1829 } 1830 1831 hist_buf = kmem_alloc(size, KM_SLEEP); 1832 if ((error = spa_history_get(spa, &zc->zc_history_offset, 1833 &zc->zc_history_len, hist_buf)) == 0) { 1834 error = ddi_copyout(hist_buf, 1835 (void *)(uintptr_t)zc->zc_history, 1836 zc->zc_history_len, zc->zc_iflags); 1837 } 1838 1839 spa_close(spa, FTAG); 1840 kmem_free(hist_buf, size); 1841 return (error); 1842 } 1843 1844 static int 1845 zfs_ioc_pool_reguid(zfs_cmd_t *zc) 1846 { 1847 spa_t *spa; 1848 int error; 1849 1850 error = spa_open(zc->zc_name, &spa, FTAG); 1851 if (error == 0) { 1852 error = spa_change_guid(spa); 1853 spa_close(spa, FTAG); 1854 } 1855 return (error); 1856 } 1857 1858 static int 1859 zfs_ioc_dsobj_to_dsname(zfs_cmd_t *zc) 1860 { 1861 return (dsl_dsobj_to_dsname(zc->zc_name, zc->zc_obj, zc->zc_value)); 1862 } 1863 1864 /* 1865 * inputs: 1866 * zc_name name of filesystem 1867 * zc_obj object to find 1868 * 1869 * outputs: 1870 * zc_value name of object 1871 */ 1872 static int 1873 zfs_ioc_obj_to_path(zfs_cmd_t *zc) 1874 { 1875 objset_t *os; 1876 int error; 1877 1878 /* XXX reading from objset not owned */ 1879 if ((error = dmu_objset_hold_flags(zc->zc_name, B_TRUE, 1880 FTAG, &os)) != 0) 1881 return (error); 1882 if (dmu_objset_type(os) != DMU_OST_ZFS) { 1883 dmu_objset_rele_flags(os, B_TRUE, FTAG); 1884 return (SET_ERROR(EINVAL)); 1885 } 1886 error = zfs_obj_to_path(os, zc->zc_obj, zc->zc_value, 1887 sizeof (zc->zc_value)); 1888 dmu_objset_rele_flags(os, B_TRUE, FTAG); 1889 1890 return (error); 1891 } 1892 1893 /* 1894 * inputs: 1895 * zc_name name of filesystem 1896 * zc_obj object to find 1897 * 1898 * outputs: 1899 * zc_stat stats on object 1900 * zc_value path to object 1901 */ 1902 static int 1903 zfs_ioc_obj_to_stats(zfs_cmd_t *zc) 1904 { 1905 objset_t *os; 1906 int error; 1907 1908 /* XXX reading from objset not owned */ 1909 if ((error = dmu_objset_hold_flags(zc->zc_name, B_TRUE, 1910 FTAG, &os)) != 0) 1911 return (error); 1912 if (dmu_objset_type(os) != DMU_OST_ZFS) { 1913 dmu_objset_rele_flags(os, B_TRUE, FTAG); 1914 return (SET_ERROR(EINVAL)); 1915 } 1916 error = zfs_obj_to_stats(os, zc->zc_obj, &zc->zc_stat, zc->zc_value, 1917 sizeof (zc->zc_value)); 1918 dmu_objset_rele_flags(os, B_TRUE, FTAG); 1919 1920 return (error); 1921 } 1922 1923 static int 1924 zfs_ioc_vdev_add(zfs_cmd_t *zc) 1925 { 1926 spa_t *spa; 1927 int error; 1928 nvlist_t *config, **l2cache, **spares; 1929 uint_t nl2cache = 0, nspares = 0; 1930 1931 error = spa_open(zc->zc_name, &spa, FTAG); 1932 if (error != 0) 1933 return (error); 1934 1935 error = get_nvlist(zc->zc_nvlist_conf, zc->zc_nvlist_conf_size, 1936 zc->zc_iflags, &config); 1937 (void) nvlist_lookup_nvlist_array(config, ZPOOL_CONFIG_L2CACHE, 1938 &l2cache, &nl2cache); 1939 1940 (void) nvlist_lookup_nvlist_array(config, ZPOOL_CONFIG_SPARES, 1941 &spares, &nspares); 1942 1943 /* 1944 * A root pool with concatenated devices is not supported. 1945 * Thus, can not add a device to a root pool. 1946 * 1947 * Intent log device can not be added to a rootpool because 1948 * during mountroot, zil is replayed, a seperated log device 1949 * can not be accessed during the mountroot time. 1950 * 1951 * l2cache and spare devices are ok to be added to a rootpool. 1952 */ 1953 if (spa_bootfs(spa) != 0 && nl2cache == 0 && nspares == 0) { 1954 nvlist_free(config); 1955 spa_close(spa, FTAG); 1956 return (SET_ERROR(EDOM)); 1957 } 1958 1959 if (error == 0) { 1960 error = spa_vdev_add(spa, config); 1961 nvlist_free(config); 1962 } 1963 spa_close(spa, FTAG); 1964 return (error); 1965 } 1966 1967 /* 1968 * inputs: 1969 * zc_name name of the pool 1970 * zc_guid guid of vdev to remove 1971 * zc_cookie cancel removal 1972 */ 1973 static int 1974 zfs_ioc_vdev_remove(zfs_cmd_t *zc) 1975 { 1976 spa_t *spa; 1977 int error; 1978 1979 error = spa_open(zc->zc_name, &spa, FTAG); 1980 if (error != 0) 1981 return (error); 1982 if (zc->zc_cookie != 0) { 1983 error = spa_vdev_remove_cancel(spa); 1984 } else { 1985 error = spa_vdev_remove(spa, zc->zc_guid, B_FALSE); 1986 } 1987 spa_close(spa, FTAG); 1988 return (error); 1989 } 1990 1991 static int 1992 zfs_ioc_vdev_set_state(zfs_cmd_t *zc) 1993 { 1994 spa_t *spa; 1995 int error; 1996 vdev_state_t newstate = VDEV_STATE_UNKNOWN; 1997 1998 if ((error = spa_open(zc->zc_name, &spa, FTAG)) != 0) 1999 return (error); 2000 switch (zc->zc_cookie) { 2001 case VDEV_STATE_ONLINE: 2002 error = vdev_online(spa, zc->zc_guid, zc->zc_obj, &newstate); 2003 break; 2004 2005 case VDEV_STATE_OFFLINE: 2006 error = vdev_offline(spa, zc->zc_guid, zc->zc_obj); 2007 break; 2008 2009 case VDEV_STATE_FAULTED: 2010 if (zc->zc_obj != VDEV_AUX_ERR_EXCEEDED && 2011 zc->zc_obj != VDEV_AUX_EXTERNAL) 2012 zc->zc_obj = VDEV_AUX_ERR_EXCEEDED; 2013 2014 error = vdev_fault(spa, zc->zc_guid, zc->zc_obj); 2015 break; 2016 2017 case VDEV_STATE_DEGRADED: 2018 if (zc->zc_obj != VDEV_AUX_ERR_EXCEEDED && 2019 zc->zc_obj != VDEV_AUX_EXTERNAL) 2020 zc->zc_obj = VDEV_AUX_ERR_EXCEEDED; 2021 2022 error = vdev_degrade(spa, zc->zc_guid, zc->zc_obj); 2023 break; 2024 2025 default: 2026 error = SET_ERROR(EINVAL); 2027 } 2028 zc->zc_cookie = newstate; 2029 spa_close(spa, FTAG); 2030 return (error); 2031 } 2032 2033 static int 2034 zfs_ioc_vdev_attach(zfs_cmd_t *zc) 2035 { 2036 spa_t *spa; 2037 int replacing = zc->zc_cookie; 2038 nvlist_t *config; 2039 int error; 2040 2041 if ((error = spa_open(zc->zc_name, &spa, FTAG)) != 0) 2042 return (error); 2043 2044 if ((error = get_nvlist(zc->zc_nvlist_conf, zc->zc_nvlist_conf_size, 2045 zc->zc_iflags, &config)) == 0) { 2046 error = spa_vdev_attach(spa, zc->zc_guid, config, replacing); 2047 nvlist_free(config); 2048 } 2049 2050 spa_close(spa, FTAG); 2051 return (error); 2052 } 2053 2054 static int 2055 zfs_ioc_vdev_detach(zfs_cmd_t *zc) 2056 { 2057 spa_t *spa; 2058 int error; 2059 2060 if ((error = spa_open(zc->zc_name, &spa, FTAG)) != 0) 2061 return (error); 2062 2063 error = spa_vdev_detach(spa, zc->zc_guid, 0, B_FALSE); 2064 2065 spa_close(spa, FTAG); 2066 return (error); 2067 } 2068 2069 static int 2070 zfs_ioc_vdev_split(zfs_cmd_t *zc) 2071 { 2072 spa_t *spa; 2073 nvlist_t *config, *props = NULL; 2074 int error; 2075 boolean_t exp = !!(zc->zc_cookie & ZPOOL_EXPORT_AFTER_SPLIT); 2076 2077 if ((error = spa_open(zc->zc_name, &spa, FTAG)) != 0) 2078 return (error); 2079 2080 if (error = get_nvlist(zc->zc_nvlist_conf, zc->zc_nvlist_conf_size, 2081 zc->zc_iflags, &config)) { 2082 spa_close(spa, FTAG); 2083 return (error); 2084 } 2085 2086 if (zc->zc_nvlist_src_size != 0 && (error = 2087 get_nvlist(zc->zc_nvlist_src, zc->zc_nvlist_src_size, 2088 zc->zc_iflags, &props))) { 2089 spa_close(spa, FTAG); 2090 nvlist_free(config); 2091 return (error); 2092 } 2093 2094 error = spa_vdev_split_mirror(spa, zc->zc_string, config, props, exp); 2095 2096 spa_close(spa, FTAG); 2097 2098 nvlist_free(config); 2099 nvlist_free(props); 2100 2101 return (error); 2102 } 2103 2104 static int 2105 zfs_ioc_vdev_setpath(zfs_cmd_t *zc) 2106 { 2107 spa_t *spa; 2108 char *path = zc->zc_value; 2109 uint64_t guid = zc->zc_guid; 2110 int error; 2111 2112 error = spa_open(zc->zc_name, &spa, FTAG); 2113 if (error != 0) 2114 return (error); 2115 2116 error = spa_vdev_setpath(spa, guid, path); 2117 spa_close(spa, FTAG); 2118 return (error); 2119 } 2120 2121 static int 2122 zfs_ioc_vdev_setfru(zfs_cmd_t *zc) 2123 { 2124 spa_t *spa; 2125 char *fru = zc->zc_value; 2126 uint64_t guid = zc->zc_guid; 2127 int error; 2128 2129 error = spa_open(zc->zc_name, &spa, FTAG); 2130 if (error != 0) 2131 return (error); 2132 2133 error = spa_vdev_setfru(spa, guid, fru); 2134 spa_close(spa, FTAG); 2135 return (error); 2136 } 2137 2138 static int 2139 zfs_ioc_objset_stats_impl(zfs_cmd_t *zc, objset_t *os) 2140 { 2141 int error = 0; 2142 nvlist_t *nv; 2143 2144 dmu_objset_fast_stat(os, &zc->zc_objset_stats); 2145 2146 if (zc->zc_nvlist_dst != 0 && 2147 (error = dsl_prop_get_all(os, &nv)) == 0) { 2148 dmu_objset_stats(os, nv); 2149 /* 2150 * NB: zvol_get_stats() will read the objset contents, 2151 * which we aren't supposed to do with a 2152 * DS_MODE_USER hold, because it could be 2153 * inconsistent. So this is a bit of a workaround... 2154 * XXX reading with out owning 2155 */ 2156 if (!zc->zc_objset_stats.dds_inconsistent && 2157 dmu_objset_type(os) == DMU_OST_ZVOL) { 2158 error = zvol_get_stats(os, nv); 2159 if (error == EIO) 2160 return (error); 2161 VERIFY0(error); 2162 } 2163 error = put_nvlist(zc, nv); 2164 nvlist_free(nv); 2165 } 2166 2167 return (error); 2168 } 2169 2170 /* 2171 * inputs: 2172 * zc_name name of filesystem 2173 * zc_nvlist_dst_size size of buffer for property nvlist 2174 * 2175 * outputs: 2176 * zc_objset_stats stats 2177 * zc_nvlist_dst property nvlist 2178 * zc_nvlist_dst_size size of property nvlist 2179 */ 2180 static int 2181 zfs_ioc_objset_stats(zfs_cmd_t *zc) 2182 { 2183 objset_t *os; 2184 int error; 2185 2186 error = dmu_objset_hold(zc->zc_name, FTAG, &os); 2187 if (error == 0) { 2188 error = zfs_ioc_objset_stats_impl(zc, os); 2189 dmu_objset_rele(os, FTAG); 2190 } 2191 2192 return (error); 2193 } 2194 2195 /* 2196 * inputs: 2197 * zc_name name of filesystem 2198 * zc_nvlist_dst_size size of buffer for property nvlist 2199 * 2200 * outputs: 2201 * zc_nvlist_dst received property nvlist 2202 * zc_nvlist_dst_size size of received property nvlist 2203 * 2204 * Gets received properties (distinct from local properties on or after 2205 * SPA_VERSION_RECVD_PROPS) for callers who want to differentiate received from 2206 * local property values. 2207 */ 2208 static int 2209 zfs_ioc_objset_recvd_props(zfs_cmd_t *zc) 2210 { 2211 int error = 0; 2212 nvlist_t *nv; 2213 2214 /* 2215 * Without this check, we would return local property values if the 2216 * caller has not already received properties on or after 2217 * SPA_VERSION_RECVD_PROPS. 2218 */ 2219 if (!dsl_prop_get_hasrecvd(zc->zc_name)) 2220 return (SET_ERROR(ENOTSUP)); 2221 2222 if (zc->zc_nvlist_dst != 0 && 2223 (error = dsl_prop_get_received(zc->zc_name, &nv)) == 0) { 2224 error = put_nvlist(zc, nv); 2225 nvlist_free(nv); 2226 } 2227 2228 return (error); 2229 } 2230 2231 static int 2232 nvl_add_zplprop(objset_t *os, nvlist_t *props, zfs_prop_t prop) 2233 { 2234 uint64_t value; 2235 int error; 2236 2237 /* 2238 * zfs_get_zplprop() will either find a value or give us 2239 * the default value (if there is one). 2240 */ 2241 if ((error = zfs_get_zplprop(os, prop, &value)) != 0) 2242 return (error); 2243 VERIFY(nvlist_add_uint64(props, zfs_prop_to_name(prop), value) == 0); 2244 return (0); 2245 } 2246 2247 /* 2248 * inputs: 2249 * zc_name name of filesystem 2250 * zc_nvlist_dst_size size of buffer for zpl property nvlist 2251 * 2252 * outputs: 2253 * zc_nvlist_dst zpl property nvlist 2254 * zc_nvlist_dst_size size of zpl property nvlist 2255 */ 2256 static int 2257 zfs_ioc_objset_zplprops(zfs_cmd_t *zc) 2258 { 2259 objset_t *os; 2260 int err; 2261 2262 /* XXX reading without owning */ 2263 if (err = dmu_objset_hold(zc->zc_name, FTAG, &os)) 2264 return (err); 2265 2266 dmu_objset_fast_stat(os, &zc->zc_objset_stats); 2267 2268 /* 2269 * NB: nvl_add_zplprop() will read the objset contents, 2270 * which we aren't supposed to do with a DS_MODE_USER 2271 * hold, because it could be inconsistent. 2272 */ 2273 if (zc->zc_nvlist_dst != 0 && 2274 !zc->zc_objset_stats.dds_inconsistent && 2275 dmu_objset_type(os) == DMU_OST_ZFS) { 2276 nvlist_t *nv; 2277 2278 VERIFY(nvlist_alloc(&nv, NV_UNIQUE_NAME, KM_SLEEP) == 0); 2279 if ((err = nvl_add_zplprop(os, nv, ZFS_PROP_VERSION)) == 0 && 2280 (err = nvl_add_zplprop(os, nv, ZFS_PROP_NORMALIZE)) == 0 && 2281 (err = nvl_add_zplprop(os, nv, ZFS_PROP_UTF8ONLY)) == 0 && 2282 (err = nvl_add_zplprop(os, nv, ZFS_PROP_CASE)) == 0) 2283 err = put_nvlist(zc, nv); 2284 nvlist_free(nv); 2285 } else { 2286 err = SET_ERROR(ENOENT); 2287 } 2288 dmu_objset_rele(os, FTAG); 2289 return (err); 2290 } 2291 2292 static boolean_t 2293 dataset_name_hidden(const char *name) 2294 { 2295 /* 2296 * Skip over datasets that are not visible in this zone, 2297 * internal datasets (which have a $ in their name), and 2298 * temporary datasets (which have a % in their name). 2299 */ 2300 if (strchr(name, '$') != NULL) 2301 return (B_TRUE); 2302 if (strchr(name, '%') != NULL) 2303 return (B_TRUE); 2304 if (!INGLOBALZONE(curproc) && !zone_dataset_visible(name, NULL)) 2305 return (B_TRUE); 2306 return (B_FALSE); 2307 } 2308 2309 /* 2310 * inputs: 2311 * zc_name name of filesystem 2312 * zc_cookie zap cursor 2313 * zc_nvlist_dst_size size of buffer for property nvlist 2314 * 2315 * outputs: 2316 * zc_name name of next filesystem 2317 * zc_cookie zap cursor 2318 * zc_objset_stats stats 2319 * zc_nvlist_dst property nvlist 2320 * zc_nvlist_dst_size size of property nvlist 2321 */ 2322 static int 2323 zfs_ioc_dataset_list_next(zfs_cmd_t *zc) 2324 { 2325 objset_t *os; 2326 int error; 2327 char *p; 2328 size_t orig_len = strlen(zc->zc_name); 2329 2330 top: 2331 if (error = dmu_objset_hold(zc->zc_name, FTAG, &os)) { 2332 if (error == ENOENT) 2333 error = SET_ERROR(ESRCH); 2334 return (error); 2335 } 2336 2337 p = strrchr(zc->zc_name, '/'); 2338 if (p == NULL || p[1] != '\0') 2339 (void) strlcat(zc->zc_name, "/", sizeof (zc->zc_name)); 2340 p = zc->zc_name + strlen(zc->zc_name); 2341 2342 do { 2343 error = dmu_dir_list_next(os, 2344 sizeof (zc->zc_name) - (p - zc->zc_name), p, 2345 NULL, &zc->zc_cookie); 2346 if (error == ENOENT) 2347 error = SET_ERROR(ESRCH); 2348 } while (error == 0 && dataset_name_hidden(zc->zc_name)); 2349 dmu_objset_rele(os, FTAG); 2350 2351 /* 2352 * If it's an internal dataset (ie. with a '$' in its name), 2353 * don't try to get stats for it, otherwise we'll return ENOENT. 2354 */ 2355 if (error == 0 && strchr(zc->zc_name, '$') == NULL) { 2356 error = zfs_ioc_objset_stats(zc); /* fill in the stats */ 2357 if (error == ENOENT) { 2358 /* We lost a race with destroy, get the next one. */ 2359 zc->zc_name[orig_len] = '\0'; 2360 goto top; 2361 } 2362 } 2363 return (error); 2364 } 2365 2366 /* 2367 * inputs: 2368 * zc_name name of filesystem 2369 * zc_cookie zap cursor 2370 * zc_nvlist_dst_size size of buffer for property nvlist 2371 * zc_simple when set, only name is requested 2372 * 2373 * outputs: 2374 * zc_name name of next snapshot 2375 * zc_objset_stats stats 2376 * zc_nvlist_dst property nvlist 2377 * zc_nvlist_dst_size size of property nvlist 2378 */ 2379 static int 2380 zfs_ioc_snapshot_list_next(zfs_cmd_t *zc) 2381 { 2382 objset_t *os; 2383 int error; 2384 2385 error = dmu_objset_hold(zc->zc_name, FTAG, &os); 2386 if (error != 0) { 2387 return (error == ENOENT ? ESRCH : error); 2388 } 2389 2390 /* 2391 * A dataset name of maximum length cannot have any snapshots, 2392 * so exit immediately. 2393 */ 2394 if (strlcat(zc->zc_name, "@", sizeof (zc->zc_name)) >= 2395 ZFS_MAX_DATASET_NAME_LEN) { 2396 dmu_objset_rele(os, FTAG); 2397 return (SET_ERROR(ESRCH)); 2398 } 2399 2400 error = dmu_snapshot_list_next(os, 2401 sizeof (zc->zc_name) - strlen(zc->zc_name), 2402 zc->zc_name + strlen(zc->zc_name), &zc->zc_obj, &zc->zc_cookie, 2403 NULL); 2404 2405 if (error == 0 && !zc->zc_simple) { 2406 dsl_dataset_t *ds; 2407 dsl_pool_t *dp = os->os_dsl_dataset->ds_dir->dd_pool; 2408 2409 error = dsl_dataset_hold_obj(dp, zc->zc_obj, FTAG, &ds); 2410 if (error == 0) { 2411 objset_t *ossnap; 2412 2413 error = dmu_objset_from_ds(ds, &ossnap); 2414 if (error == 0) 2415 error = zfs_ioc_objset_stats_impl(zc, ossnap); 2416 dsl_dataset_rele(ds, FTAG); 2417 } 2418 } else if (error == ENOENT) { 2419 error = SET_ERROR(ESRCH); 2420 } 2421 2422 dmu_objset_rele(os, FTAG); 2423 /* if we failed, undo the @ that we tacked on to zc_name */ 2424 if (error != 0) 2425 *strchr(zc->zc_name, '@') = '\0'; 2426 return (error); 2427 } 2428 2429 static int 2430 zfs_prop_set_userquota(const char *dsname, nvpair_t *pair) 2431 { 2432 const char *propname = nvpair_name(pair); 2433 uint64_t *valary; 2434 unsigned int vallen; 2435 const char *domain; 2436 char *dash; 2437 zfs_userquota_prop_t type; 2438 uint64_t rid; 2439 uint64_t quota; 2440 zfsvfs_t *zfsvfs; 2441 int err; 2442 2443 if (nvpair_type(pair) == DATA_TYPE_NVLIST) { 2444 nvlist_t *attrs; 2445 VERIFY(nvpair_value_nvlist(pair, &attrs) == 0); 2446 if (nvlist_lookup_nvpair(attrs, ZPROP_VALUE, 2447 &pair) != 0) 2448 return (SET_ERROR(EINVAL)); 2449 } 2450 2451 /* 2452 * A correctly constructed propname is encoded as 2453 * userquota@<rid>-<domain>. 2454 */ 2455 if ((dash = strchr(propname, '-')) == NULL || 2456 nvpair_value_uint64_array(pair, &valary, &vallen) != 0 || 2457 vallen != 3) 2458 return (SET_ERROR(EINVAL)); 2459 2460 domain = dash + 1; 2461 type = valary[0]; 2462 rid = valary[1]; 2463 quota = valary[2]; 2464 2465 err = zfsvfs_hold(dsname, FTAG, &zfsvfs, B_FALSE); 2466 if (err == 0) { 2467 err = zfs_set_userquota(zfsvfs, type, domain, rid, quota); 2468 zfsvfs_rele(zfsvfs, FTAG); 2469 } 2470 2471 return (err); 2472 } 2473 2474 /* 2475 * If the named property is one that has a special function to set its value, 2476 * return 0 on success and a positive error code on failure; otherwise if it is 2477 * not one of the special properties handled by this function, return -1. 2478 * 2479 * XXX: It would be better for callers of the property interface if we handled 2480 * these special cases in dsl_prop.c (in the dsl layer). 2481 */ 2482 static int 2483 zfs_prop_set_special(const char *dsname, zprop_source_t source, 2484 nvpair_t *pair) 2485 { 2486 const char *propname = nvpair_name(pair); 2487 zfs_prop_t prop = zfs_name_to_prop(propname); 2488 uint64_t intval = 0; 2489 char *strval = NULL; 2490 int err = -1; 2491 2492 if (prop == ZPROP_INVAL) { 2493 if (zfs_prop_userquota(propname)) 2494 return (zfs_prop_set_userquota(dsname, pair)); 2495 return (-1); 2496 } 2497 2498 if (nvpair_type(pair) == DATA_TYPE_NVLIST) { 2499 nvlist_t *attrs; 2500 VERIFY(nvpair_value_nvlist(pair, &attrs) == 0); 2501 VERIFY(nvlist_lookup_nvpair(attrs, ZPROP_VALUE, 2502 &pair) == 0); 2503 } 2504 2505 /* all special properties are numeric except for keylocation */ 2506 if (zfs_prop_get_type(prop) == PROP_TYPE_STRING) { 2507 strval = fnvpair_value_string(pair); 2508 } else { 2509 intval = fnvpair_value_uint64(pair); 2510 } 2511 2512 switch (prop) { 2513 case ZFS_PROP_QUOTA: 2514 err = dsl_dir_set_quota(dsname, source, intval); 2515 break; 2516 case ZFS_PROP_REFQUOTA: 2517 err = dsl_dataset_set_refquota(dsname, source, intval); 2518 break; 2519 case ZFS_PROP_FILESYSTEM_LIMIT: 2520 case ZFS_PROP_SNAPSHOT_LIMIT: 2521 if (intval == UINT64_MAX) { 2522 /* clearing the limit, just do it */ 2523 err = 0; 2524 } else { 2525 err = dsl_dir_activate_fs_ss_limit(dsname); 2526 } 2527 /* 2528 * Set err to -1 to force the zfs_set_prop_nvlist code down the 2529 * default path to set the value in the nvlist. 2530 */ 2531 if (err == 0) 2532 err = -1; 2533 break; 2534 case ZFS_PROP_KEYLOCATION: 2535 err = dsl_crypto_can_set_keylocation(dsname, strval); 2536 2537 /* 2538 * Set err to -1 to force the zfs_set_prop_nvlist code down the 2539 * default path to set the value in the nvlist. 2540 */ 2541 if (err == 0) 2542 err = -1; 2543 break; 2544 case ZFS_PROP_RESERVATION: 2545 err = dsl_dir_set_reservation(dsname, source, intval); 2546 break; 2547 case ZFS_PROP_REFRESERVATION: 2548 err = dsl_dataset_set_refreservation(dsname, source, intval); 2549 break; 2550 case ZFS_PROP_VOLSIZE: 2551 err = zvol_set_volsize(dsname, intval); 2552 break; 2553 case ZFS_PROP_VERSION: 2554 { 2555 zfsvfs_t *zfsvfs; 2556 2557 if ((err = zfsvfs_hold(dsname, FTAG, &zfsvfs, B_TRUE)) != 0) 2558 break; 2559 2560 err = zfs_set_version(zfsvfs, intval); 2561 zfsvfs_rele(zfsvfs, FTAG); 2562 2563 if (err == 0 && intval >= ZPL_VERSION_USERSPACE) { 2564 zfs_cmd_t *zc; 2565 2566 zc = kmem_zalloc(sizeof (zfs_cmd_t), KM_SLEEP); 2567 (void) strcpy(zc->zc_name, dsname); 2568 (void) zfs_ioc_userspace_upgrade(zc); 2569 (void) zfs_ioc_id_quota_upgrade(zc); 2570 kmem_free(zc, sizeof (zfs_cmd_t)); 2571 } 2572 break; 2573 } 2574 default: 2575 err = -1; 2576 } 2577 2578 return (err); 2579 } 2580 2581 /* 2582 * This function is best effort. If it fails to set any of the given properties, 2583 * it continues to set as many as it can and returns the last error 2584 * encountered. If the caller provides a non-NULL errlist, it will be filled in 2585 * with the list of names of all the properties that failed along with the 2586 * corresponding error numbers. 2587 * 2588 * If every property is set successfully, zero is returned and errlist is not 2589 * modified. 2590 */ 2591 int 2592 zfs_set_prop_nvlist(const char *dsname, zprop_source_t source, nvlist_t *nvl, 2593 nvlist_t *errlist) 2594 { 2595 nvpair_t *pair; 2596 nvpair_t *propval; 2597 int rv = 0; 2598 uint64_t intval; 2599 char *strval; 2600 nvlist_t *genericnvl = fnvlist_alloc(); 2601 nvlist_t *retrynvl = fnvlist_alloc(); 2602 2603 retry: 2604 pair = NULL; 2605 while ((pair = nvlist_next_nvpair(nvl, pair)) != NULL) { 2606 const char *propname = nvpair_name(pair); 2607 zfs_prop_t prop = zfs_name_to_prop(propname); 2608 int err = 0; 2609 2610 /* decode the property value */ 2611 propval = pair; 2612 if (nvpair_type(pair) == DATA_TYPE_NVLIST) { 2613 nvlist_t *attrs; 2614 attrs = fnvpair_value_nvlist(pair); 2615 if (nvlist_lookup_nvpair(attrs, ZPROP_VALUE, 2616 &propval) != 0) 2617 err = SET_ERROR(EINVAL); 2618 } 2619 2620 /* Validate value type */ 2621 if (err == 0 && source == ZPROP_SRC_INHERITED) { 2622 /* inherited properties are expected to be booleans */ 2623 if (nvpair_type(propval) != DATA_TYPE_BOOLEAN) 2624 err = SET_ERROR(EINVAL); 2625 } else if (err == 0 && prop == ZPROP_INVAL) { 2626 if (zfs_prop_user(propname)) { 2627 if (nvpair_type(propval) != DATA_TYPE_STRING) 2628 err = SET_ERROR(EINVAL); 2629 } else if (zfs_prop_userquota(propname)) { 2630 if (nvpair_type(propval) != 2631 DATA_TYPE_UINT64_ARRAY) 2632 err = SET_ERROR(EINVAL); 2633 } else { 2634 err = SET_ERROR(EINVAL); 2635 } 2636 } else if (err == 0) { 2637 if (nvpair_type(propval) == DATA_TYPE_STRING) { 2638 if (zfs_prop_get_type(prop) != PROP_TYPE_STRING) 2639 err = SET_ERROR(EINVAL); 2640 } else if (nvpair_type(propval) == DATA_TYPE_UINT64) { 2641 const char *unused; 2642 2643 intval = fnvpair_value_uint64(propval); 2644 2645 switch (zfs_prop_get_type(prop)) { 2646 case PROP_TYPE_NUMBER: 2647 break; 2648 case PROP_TYPE_STRING: 2649 err = SET_ERROR(EINVAL); 2650 break; 2651 case PROP_TYPE_INDEX: 2652 if (zfs_prop_index_to_string(prop, 2653 intval, &unused) != 0) 2654 err = SET_ERROR(EINVAL); 2655 break; 2656 default: 2657 cmn_err(CE_PANIC, 2658 "unknown property type"); 2659 } 2660 } else { 2661 err = SET_ERROR(EINVAL); 2662 } 2663 } 2664 2665 /* Validate permissions */ 2666 if (err == 0) 2667 err = zfs_check_settable(dsname, pair, CRED()); 2668 2669 if (err == 0) { 2670 if (source == ZPROP_SRC_INHERITED) 2671 err = -1; /* does not need special handling */ 2672 else 2673 err = zfs_prop_set_special(dsname, source, 2674 pair); 2675 if (err == -1) { 2676 /* 2677 * For better performance we build up a list of 2678 * properties to set in a single transaction. 2679 */ 2680 err = nvlist_add_nvpair(genericnvl, pair); 2681 } else if (err != 0 && nvl != retrynvl) { 2682 /* 2683 * This may be a spurious error caused by 2684 * receiving quota and reservation out of order. 2685 * Try again in a second pass. 2686 */ 2687 err = nvlist_add_nvpair(retrynvl, pair); 2688 } 2689 } 2690 2691 if (err != 0) { 2692 if (errlist != NULL) 2693 fnvlist_add_int32(errlist, propname, err); 2694 rv = err; 2695 } 2696 } 2697 2698 if (nvl != retrynvl && !nvlist_empty(retrynvl)) { 2699 nvl = retrynvl; 2700 goto retry; 2701 } 2702 2703 if (!nvlist_empty(genericnvl) && 2704 dsl_props_set(dsname, source, genericnvl) != 0) { 2705 /* 2706 * If this fails, we still want to set as many properties as we 2707 * can, so try setting them individually. 2708 */ 2709 pair = NULL; 2710 while ((pair = nvlist_next_nvpair(genericnvl, pair)) != NULL) { 2711 const char *propname = nvpair_name(pair); 2712 int err = 0; 2713 2714 propval = pair; 2715 if (nvpair_type(pair) == DATA_TYPE_NVLIST) { 2716 nvlist_t *attrs; 2717 attrs = fnvpair_value_nvlist(pair); 2718 propval = fnvlist_lookup_nvpair(attrs, 2719 ZPROP_VALUE); 2720 } 2721 2722 if (nvpair_type(propval) == DATA_TYPE_STRING) { 2723 strval = fnvpair_value_string(propval); 2724 err = dsl_prop_set_string(dsname, propname, 2725 source, strval); 2726 } else if (nvpair_type(propval) == DATA_TYPE_BOOLEAN) { 2727 err = dsl_prop_inherit(dsname, propname, 2728 source); 2729 } else { 2730 intval = fnvpair_value_uint64(propval); 2731 err = dsl_prop_set_int(dsname, propname, source, 2732 intval); 2733 } 2734 2735 if (err != 0) { 2736 if (errlist != NULL) { 2737 fnvlist_add_int32(errlist, propname, 2738 err); 2739 } 2740 rv = err; 2741 } 2742 } 2743 } 2744 nvlist_free(genericnvl); 2745 nvlist_free(retrynvl); 2746 2747 return (rv); 2748 } 2749 2750 /* 2751 * Check that all the properties are valid user properties. 2752 */ 2753 static int 2754 zfs_check_userprops(const char *fsname, nvlist_t *nvl) 2755 { 2756 nvpair_t *pair = NULL; 2757 int error = 0; 2758 2759 while ((pair = nvlist_next_nvpair(nvl, pair)) != NULL) { 2760 const char *propname = nvpair_name(pair); 2761 2762 if (!zfs_prop_user(propname) || 2763 nvpair_type(pair) != DATA_TYPE_STRING) 2764 return (SET_ERROR(EINVAL)); 2765 2766 if (error = zfs_secpolicy_write_perms(fsname, 2767 ZFS_DELEG_PERM_USERPROP, CRED())) 2768 return (error); 2769 2770 if (strlen(propname) >= ZAP_MAXNAMELEN) 2771 return (SET_ERROR(ENAMETOOLONG)); 2772 2773 if (strlen(fnvpair_value_string(pair)) >= ZAP_MAXVALUELEN) 2774 return (E2BIG); 2775 } 2776 return (0); 2777 } 2778 2779 static void 2780 props_skip(nvlist_t *props, nvlist_t *skipped, nvlist_t **newprops) 2781 { 2782 nvpair_t *pair; 2783 2784 VERIFY(nvlist_alloc(newprops, NV_UNIQUE_NAME, KM_SLEEP) == 0); 2785 2786 pair = NULL; 2787 while ((pair = nvlist_next_nvpair(props, pair)) != NULL) { 2788 if (nvlist_exists(skipped, nvpair_name(pair))) 2789 continue; 2790 2791 VERIFY(nvlist_add_nvpair(*newprops, pair) == 0); 2792 } 2793 } 2794 2795 static int 2796 clear_received_props(const char *dsname, nvlist_t *props, 2797 nvlist_t *skipped) 2798 { 2799 int err = 0; 2800 nvlist_t *cleared_props = NULL; 2801 props_skip(props, skipped, &cleared_props); 2802 if (!nvlist_empty(cleared_props)) { 2803 /* 2804 * Acts on local properties until the dataset has received 2805 * properties at least once on or after SPA_VERSION_RECVD_PROPS. 2806 */ 2807 zprop_source_t flags = (ZPROP_SRC_NONE | 2808 (dsl_prop_get_hasrecvd(dsname) ? ZPROP_SRC_RECEIVED : 0)); 2809 err = zfs_set_prop_nvlist(dsname, flags, cleared_props, NULL); 2810 } 2811 nvlist_free(cleared_props); 2812 return (err); 2813 } 2814 2815 /* 2816 * inputs: 2817 * zc_name name of filesystem 2818 * zc_value name of property to set 2819 * zc_nvlist_src{_size} nvlist of properties to apply 2820 * zc_cookie received properties flag 2821 * 2822 * outputs: 2823 * zc_nvlist_dst{_size} error for each unapplied received property 2824 */ 2825 static int 2826 zfs_ioc_set_prop(zfs_cmd_t *zc) 2827 { 2828 nvlist_t *nvl; 2829 boolean_t received = zc->zc_cookie; 2830 zprop_source_t source = (received ? ZPROP_SRC_RECEIVED : 2831 ZPROP_SRC_LOCAL); 2832 nvlist_t *errors; 2833 int error; 2834 2835 if ((error = get_nvlist(zc->zc_nvlist_src, zc->zc_nvlist_src_size, 2836 zc->zc_iflags, &nvl)) != 0) 2837 return (error); 2838 2839 if (received) { 2840 nvlist_t *origprops; 2841 2842 if (dsl_prop_get_received(zc->zc_name, &origprops) == 0) { 2843 (void) clear_received_props(zc->zc_name, 2844 origprops, nvl); 2845 nvlist_free(origprops); 2846 } 2847 2848 error = dsl_prop_set_hasrecvd(zc->zc_name); 2849 } 2850 2851 errors = fnvlist_alloc(); 2852 if (error == 0) 2853 error = zfs_set_prop_nvlist(zc->zc_name, source, nvl, errors); 2854 2855 if (zc->zc_nvlist_dst != 0 && errors != NULL) { 2856 (void) put_nvlist(zc, errors); 2857 } 2858 2859 nvlist_free(errors); 2860 nvlist_free(nvl); 2861 return (error); 2862 } 2863 2864 /* 2865 * inputs: 2866 * zc_name name of filesystem 2867 * zc_value name of property to inherit 2868 * zc_cookie revert to received value if TRUE 2869 * 2870 * outputs: none 2871 */ 2872 static int 2873 zfs_ioc_inherit_prop(zfs_cmd_t *zc) 2874 { 2875 const char *propname = zc->zc_value; 2876 zfs_prop_t prop = zfs_name_to_prop(propname); 2877 boolean_t received = zc->zc_cookie; 2878 zprop_source_t source = (received 2879 ? ZPROP_SRC_NONE /* revert to received value, if any */ 2880 : ZPROP_SRC_INHERITED); /* explicitly inherit */ 2881 2882 if (received) { 2883 nvlist_t *dummy; 2884 nvpair_t *pair; 2885 zprop_type_t type; 2886 int err; 2887 2888 /* 2889 * zfs_prop_set_special() expects properties in the form of an 2890 * nvpair with type info. 2891 */ 2892 if (prop == ZPROP_INVAL) { 2893 if (!zfs_prop_user(propname)) 2894 return (SET_ERROR(EINVAL)); 2895 2896 type = PROP_TYPE_STRING; 2897 } else if (prop == ZFS_PROP_VOLSIZE || 2898 prop == ZFS_PROP_VERSION) { 2899 return (SET_ERROR(EINVAL)); 2900 } else { 2901 type = zfs_prop_get_type(prop); 2902 } 2903 2904 VERIFY(nvlist_alloc(&dummy, NV_UNIQUE_NAME, KM_SLEEP) == 0); 2905 2906 switch (type) { 2907 case PROP_TYPE_STRING: 2908 VERIFY(0 == nvlist_add_string(dummy, propname, "")); 2909 break; 2910 case PROP_TYPE_NUMBER: 2911 case PROP_TYPE_INDEX: 2912 VERIFY(0 == nvlist_add_uint64(dummy, propname, 0)); 2913 break; 2914 default: 2915 nvlist_free(dummy); 2916 return (SET_ERROR(EINVAL)); 2917 } 2918 2919 pair = nvlist_next_nvpair(dummy, NULL); 2920 err = zfs_prop_set_special(zc->zc_name, source, pair); 2921 nvlist_free(dummy); 2922 if (err != -1) 2923 return (err); /* special property already handled */ 2924 } else { 2925 /* 2926 * Only check this in the non-received case. We want to allow 2927 * 'inherit -S' to revert non-inheritable properties like quota 2928 * and reservation to the received or default values even though 2929 * they are not considered inheritable. 2930 */ 2931 if (prop != ZPROP_INVAL && !zfs_prop_inheritable(prop)) 2932 return (SET_ERROR(EINVAL)); 2933 } 2934 2935 /* property name has been validated by zfs_secpolicy_inherit_prop() */ 2936 return (dsl_prop_inherit(zc->zc_name, zc->zc_value, source)); 2937 } 2938 2939 static int 2940 zfs_ioc_pool_set_props(zfs_cmd_t *zc) 2941 { 2942 nvlist_t *props; 2943 spa_t *spa; 2944 int error; 2945 nvpair_t *pair; 2946 2947 if (error = get_nvlist(zc->zc_nvlist_src, zc->zc_nvlist_src_size, 2948 zc->zc_iflags, &props)) 2949 return (error); 2950 2951 /* 2952 * If the only property is the configfile, then just do a spa_lookup() 2953 * to handle the faulted case. 2954 */ 2955 pair = nvlist_next_nvpair(props, NULL); 2956 if (pair != NULL && strcmp(nvpair_name(pair), 2957 zpool_prop_to_name(ZPOOL_PROP_CACHEFILE)) == 0 && 2958 nvlist_next_nvpair(props, pair) == NULL) { 2959 mutex_enter(&spa_namespace_lock); 2960 if ((spa = spa_lookup(zc->zc_name)) != NULL) { 2961 spa_configfile_set(spa, props, B_FALSE); 2962 spa_write_cachefile(spa, B_FALSE, B_TRUE); 2963 } 2964 mutex_exit(&spa_namespace_lock); 2965 if (spa != NULL) { 2966 nvlist_free(props); 2967 return (0); 2968 } 2969 } 2970 2971 if ((error = spa_open(zc->zc_name, &spa, FTAG)) != 0) { 2972 nvlist_free(props); 2973 return (error); 2974 } 2975 2976 error = spa_prop_set(spa, props); 2977 2978 nvlist_free(props); 2979 spa_close(spa, FTAG); 2980 2981 return (error); 2982 } 2983 2984 static int 2985 zfs_ioc_pool_get_props(zfs_cmd_t *zc) 2986 { 2987 spa_t *spa; 2988 int error; 2989 nvlist_t *nvp = NULL; 2990 2991 if ((error = spa_open(zc->zc_name, &spa, FTAG)) != 0) { 2992 /* 2993 * If the pool is faulted, there may be properties we can still 2994 * get (such as altroot and cachefile), so attempt to get them 2995 * anyway. 2996 */ 2997 mutex_enter(&spa_namespace_lock); 2998 if ((spa = spa_lookup(zc->zc_name)) != NULL) 2999 error = spa_prop_get(spa, &nvp); 3000 mutex_exit(&spa_namespace_lock); 3001 } else { 3002 error = spa_prop_get(spa, &nvp); 3003 spa_close(spa, FTAG); 3004 } 3005 3006 if (error == 0 && zc->zc_nvlist_dst != 0) 3007 error = put_nvlist(zc, nvp); 3008 else 3009 error = SET_ERROR(EFAULT); 3010 3011 nvlist_free(nvp); 3012 return (error); 3013 } 3014 3015 /* 3016 * inputs: 3017 * zc_name name of filesystem 3018 * zc_nvlist_src{_size} nvlist of delegated permissions 3019 * zc_perm_action allow/unallow flag 3020 * 3021 * outputs: none 3022 */ 3023 static int 3024 zfs_ioc_set_fsacl(zfs_cmd_t *zc) 3025 { 3026 int error; 3027 nvlist_t *fsaclnv = NULL; 3028 3029 if ((error = get_nvlist(zc->zc_nvlist_src, zc->zc_nvlist_src_size, 3030 zc->zc_iflags, &fsaclnv)) != 0) 3031 return (error); 3032 3033 /* 3034 * Verify nvlist is constructed correctly 3035 */ 3036 if ((error = zfs_deleg_verify_nvlist(fsaclnv)) != 0) { 3037 nvlist_free(fsaclnv); 3038 return (SET_ERROR(EINVAL)); 3039 } 3040 3041 /* 3042 * If we don't have PRIV_SYS_MOUNT, then validate 3043 * that user is allowed to hand out each permission in 3044 * the nvlist(s) 3045 */ 3046 3047 error = secpolicy_zfs(CRED()); 3048 if (error != 0) { 3049 if (zc->zc_perm_action == B_FALSE) { 3050 error = dsl_deleg_can_allow(zc->zc_name, 3051 fsaclnv, CRED()); 3052 } else { 3053 error = dsl_deleg_can_unallow(zc->zc_name, 3054 fsaclnv, CRED()); 3055 } 3056 } 3057 3058 if (error == 0) 3059 error = dsl_deleg_set(zc->zc_name, fsaclnv, zc->zc_perm_action); 3060 3061 nvlist_free(fsaclnv); 3062 return (error); 3063 } 3064 3065 /* 3066 * inputs: 3067 * zc_name name of filesystem 3068 * 3069 * outputs: 3070 * zc_nvlist_src{_size} nvlist of delegated permissions 3071 */ 3072 static int 3073 zfs_ioc_get_fsacl(zfs_cmd_t *zc) 3074 { 3075 nvlist_t *nvp; 3076 int error; 3077 3078 if ((error = dsl_deleg_get(zc->zc_name, &nvp)) == 0) { 3079 error = put_nvlist(zc, nvp); 3080 nvlist_free(nvp); 3081 } 3082 3083 return (error); 3084 } 3085 3086 /* ARGSUSED */ 3087 static void 3088 zfs_create_cb(objset_t *os, void *arg, cred_t *cr, dmu_tx_t *tx) 3089 { 3090 zfs_creat_t *zct = arg; 3091 3092 zfs_create_fs(os, cr, zct->zct_zplprops, tx); 3093 } 3094 3095 #define ZFS_PROP_UNDEFINED ((uint64_t)-1) 3096 3097 /* 3098 * inputs: 3099 * os parent objset pointer (NULL if root fs) 3100 * fuids_ok fuids allowed in this version of the spa? 3101 * sa_ok SAs allowed in this version of the spa? 3102 * createprops list of properties requested by creator 3103 * 3104 * outputs: 3105 * zplprops values for the zplprops we attach to the master node object 3106 * is_ci true if requested file system will be purely case-insensitive 3107 * 3108 * Determine the settings for utf8only, normalization and 3109 * casesensitivity. Specific values may have been requested by the 3110 * creator and/or we can inherit values from the parent dataset. If 3111 * the file system is of too early a vintage, a creator can not 3112 * request settings for these properties, even if the requested 3113 * setting is the default value. We don't actually want to create dsl 3114 * properties for these, so remove them from the source nvlist after 3115 * processing. 3116 */ 3117 static int 3118 zfs_fill_zplprops_impl(objset_t *os, uint64_t zplver, 3119 boolean_t fuids_ok, boolean_t sa_ok, nvlist_t *createprops, 3120 nvlist_t *zplprops, boolean_t *is_ci) 3121 { 3122 uint64_t sense = ZFS_PROP_UNDEFINED; 3123 uint64_t norm = ZFS_PROP_UNDEFINED; 3124 uint64_t u8 = ZFS_PROP_UNDEFINED; 3125 3126 ASSERT(zplprops != NULL); 3127 3128 if (os != NULL && os->os_phys->os_type != DMU_OST_ZFS) 3129 return (SET_ERROR(EINVAL)); 3130 3131 /* 3132 * Pull out creator prop choices, if any. 3133 */ 3134 if (createprops) { 3135 (void) nvlist_lookup_uint64(createprops, 3136 zfs_prop_to_name(ZFS_PROP_VERSION), &zplver); 3137 (void) nvlist_lookup_uint64(createprops, 3138 zfs_prop_to_name(ZFS_PROP_NORMALIZE), &norm); 3139 (void) nvlist_remove_all(createprops, 3140 zfs_prop_to_name(ZFS_PROP_NORMALIZE)); 3141 (void) nvlist_lookup_uint64(createprops, 3142 zfs_prop_to_name(ZFS_PROP_UTF8ONLY), &u8); 3143 (void) nvlist_remove_all(createprops, 3144 zfs_prop_to_name(ZFS_PROP_UTF8ONLY)); 3145 (void) nvlist_lookup_uint64(createprops, 3146 zfs_prop_to_name(ZFS_PROP_CASE), &sense); 3147 (void) nvlist_remove_all(createprops, 3148 zfs_prop_to_name(ZFS_PROP_CASE)); 3149 } 3150 3151 /* 3152 * If the zpl version requested is whacky or the file system 3153 * or pool is version is too "young" to support normalization 3154 * and the creator tried to set a value for one of the props, 3155 * error out. 3156 */ 3157 if ((zplver < ZPL_VERSION_INITIAL || zplver > ZPL_VERSION) || 3158 (zplver >= ZPL_VERSION_FUID && !fuids_ok) || 3159 (zplver >= ZPL_VERSION_SA && !sa_ok) || 3160 (zplver < ZPL_VERSION_NORMALIZATION && 3161 (norm != ZFS_PROP_UNDEFINED || u8 != ZFS_PROP_UNDEFINED || 3162 sense != ZFS_PROP_UNDEFINED))) 3163 return (SET_ERROR(ENOTSUP)); 3164 3165 /* 3166 * Put the version in the zplprops 3167 */ 3168 VERIFY(nvlist_add_uint64(zplprops, 3169 zfs_prop_to_name(ZFS_PROP_VERSION), zplver) == 0); 3170 3171 if (norm == ZFS_PROP_UNDEFINED) 3172 VERIFY(zfs_get_zplprop(os, ZFS_PROP_NORMALIZE, &norm) == 0); 3173 VERIFY(nvlist_add_uint64(zplprops, 3174 zfs_prop_to_name(ZFS_PROP_NORMALIZE), norm) == 0); 3175 3176 /* 3177 * If we're normalizing, names must always be valid UTF-8 strings. 3178 */ 3179 if (norm) 3180 u8 = 1; 3181 if (u8 == ZFS_PROP_UNDEFINED) 3182 VERIFY(zfs_get_zplprop(os, ZFS_PROP_UTF8ONLY, &u8) == 0); 3183 VERIFY(nvlist_add_uint64(zplprops, 3184 zfs_prop_to_name(ZFS_PROP_UTF8ONLY), u8) == 0); 3185 3186 if (sense == ZFS_PROP_UNDEFINED) 3187 VERIFY(zfs_get_zplprop(os, ZFS_PROP_CASE, &sense) == 0); 3188 VERIFY(nvlist_add_uint64(zplprops, 3189 zfs_prop_to_name(ZFS_PROP_CASE), sense) == 0); 3190 3191 if (is_ci) 3192 *is_ci = (sense == ZFS_CASE_INSENSITIVE); 3193 3194 return (0); 3195 } 3196 3197 static int 3198 zfs_fill_zplprops(const char *dataset, nvlist_t *createprops, 3199 nvlist_t *zplprops, boolean_t *is_ci) 3200 { 3201 boolean_t fuids_ok, sa_ok; 3202 uint64_t zplver = ZPL_VERSION; 3203 objset_t *os = NULL; 3204 char parentname[ZFS_MAX_DATASET_NAME_LEN]; 3205 char *cp; 3206 spa_t *spa; 3207 uint64_t spa_vers; 3208 int error; 3209 3210 (void) strlcpy(parentname, dataset, sizeof (parentname)); 3211 cp = strrchr(parentname, '/'); 3212 ASSERT(cp != NULL); 3213 cp[0] = '\0'; 3214 3215 if ((error = spa_open(dataset, &spa, FTAG)) != 0) 3216 return (error); 3217 3218 spa_vers = spa_version(spa); 3219 spa_close(spa, FTAG); 3220 3221 zplver = zfs_zpl_version_map(spa_vers); 3222 fuids_ok = (zplver >= ZPL_VERSION_FUID); 3223 sa_ok = (zplver >= ZPL_VERSION_SA); 3224 3225 /* 3226 * Open parent object set so we can inherit zplprop values. 3227 */ 3228 if ((error = dmu_objset_hold(parentname, FTAG, &os)) != 0) 3229 return (error); 3230 3231 error = zfs_fill_zplprops_impl(os, zplver, fuids_ok, sa_ok, createprops, 3232 zplprops, is_ci); 3233 dmu_objset_rele(os, FTAG); 3234 return (error); 3235 } 3236 3237 static int 3238 zfs_fill_zplprops_root(uint64_t spa_vers, nvlist_t *createprops, 3239 nvlist_t *zplprops, boolean_t *is_ci) 3240 { 3241 boolean_t fuids_ok; 3242 boolean_t sa_ok; 3243 uint64_t zplver = ZPL_VERSION; 3244 int error; 3245 3246 zplver = zfs_zpl_version_map(spa_vers); 3247 fuids_ok = (zplver >= ZPL_VERSION_FUID); 3248 sa_ok = (zplver >= ZPL_VERSION_SA); 3249 3250 error = zfs_fill_zplprops_impl(NULL, zplver, fuids_ok, sa_ok, 3251 createprops, zplprops, is_ci); 3252 return (error); 3253 } 3254 3255 /* 3256 * innvl: { 3257 * "type" -> dmu_objset_type_t (int32) 3258 * (optional) "props" -> { prop -> value } 3259 * (optional) "hidden_args" -> { "wkeydata" -> value } 3260 * raw uint8_t array of encryption wrapping key data (32 bytes) 3261 * } 3262 * 3263 * outnvl: propname -> error code (int32) 3264 */ 3265 static int 3266 zfs_ioc_create(const char *fsname, nvlist_t *innvl, nvlist_t *outnvl) 3267 { 3268 int error = 0; 3269 zfs_creat_t zct = { 0 }; 3270 nvlist_t *nvprops = NULL; 3271 nvlist_t *hidden_args = NULL; 3272 void (*cbfunc)(objset_t *os, void *arg, cred_t *cr, dmu_tx_t *tx); 3273 int32_t type32; 3274 dmu_objset_type_t type; 3275 boolean_t is_insensitive = B_FALSE; 3276 dsl_crypto_params_t *dcp = NULL; 3277 3278 if (nvlist_lookup_int32(innvl, "type", &type32) != 0) 3279 return (SET_ERROR(EINVAL)); 3280 type = type32; 3281 (void) nvlist_lookup_nvlist(innvl, "props", &nvprops); 3282 (void) nvlist_lookup_nvlist(innvl, ZPOOL_HIDDEN_ARGS, &hidden_args); 3283 3284 switch (type) { 3285 case DMU_OST_ZFS: 3286 cbfunc = zfs_create_cb; 3287 break; 3288 3289 case DMU_OST_ZVOL: 3290 cbfunc = zvol_create_cb; 3291 break; 3292 3293 default: 3294 cbfunc = NULL; 3295 break; 3296 } 3297 if (strchr(fsname, '@') || 3298 strchr(fsname, '%')) 3299 return (SET_ERROR(EINVAL)); 3300 3301 zct.zct_props = nvprops; 3302 3303 if (cbfunc == NULL) 3304 return (SET_ERROR(EINVAL)); 3305 3306 if (type == DMU_OST_ZVOL) { 3307 uint64_t volsize, volblocksize; 3308 3309 if (nvprops == NULL) 3310 return (SET_ERROR(EINVAL)); 3311 if (nvlist_lookup_uint64(nvprops, 3312 zfs_prop_to_name(ZFS_PROP_VOLSIZE), &volsize) != 0) 3313 return (SET_ERROR(EINVAL)); 3314 3315 if ((error = nvlist_lookup_uint64(nvprops, 3316 zfs_prop_to_name(ZFS_PROP_VOLBLOCKSIZE), 3317 &volblocksize)) != 0 && error != ENOENT) 3318 return (SET_ERROR(EINVAL)); 3319 3320 if (error != 0) 3321 volblocksize = zfs_prop_default_numeric( 3322 ZFS_PROP_VOLBLOCKSIZE); 3323 3324 if ((error = zvol_check_volblocksize( 3325 volblocksize)) != 0 || 3326 (error = zvol_check_volsize(volsize, 3327 volblocksize)) != 0) 3328 return (error); 3329 } else if (type == DMU_OST_ZFS) { 3330 int error; 3331 3332 /* 3333 * We have to have normalization and 3334 * case-folding flags correct when we do the 3335 * file system creation, so go figure them out 3336 * now. 3337 */ 3338 VERIFY(nvlist_alloc(&zct.zct_zplprops, 3339 NV_UNIQUE_NAME, KM_SLEEP) == 0); 3340 error = zfs_fill_zplprops(fsname, nvprops, 3341 zct.zct_zplprops, &is_insensitive); 3342 if (error != 0) { 3343 nvlist_free(zct.zct_zplprops); 3344 return (error); 3345 } 3346 } 3347 3348 error = dsl_crypto_params_create_nvlist(DCP_CMD_NONE, nvprops, 3349 hidden_args, &dcp); 3350 if (error != 0) { 3351 nvlist_free(zct.zct_zplprops); 3352 return (error); 3353 } 3354 3355 error = dmu_objset_create(fsname, type, 3356 is_insensitive ? DS_FLAG_CI_DATASET : 0, dcp, cbfunc, &zct); 3357 3358 nvlist_free(zct.zct_zplprops); 3359 dsl_crypto_params_free(dcp, !!error); 3360 3361 /* 3362 * It would be nice to do this atomically. 3363 */ 3364 if (error == 0) { 3365 error = zfs_set_prop_nvlist(fsname, ZPROP_SRC_LOCAL, 3366 nvprops, outnvl); 3367 if (error != 0) 3368 (void) dsl_destroy_head(fsname); 3369 } 3370 return (error); 3371 } 3372 3373 /* 3374 * innvl: { 3375 * "origin" -> name of origin snapshot 3376 * (optional) "props" -> { prop -> value } 3377 * (optional) "hidden_args" -> { "wkeydata" -> value } 3378 * raw uint8_t array of encryption wrapping key data (32 bytes) 3379 * } 3380 * 3381 * outnvl: propname -> error code (int32) 3382 */ 3383 static int 3384 zfs_ioc_clone(const char *fsname, nvlist_t *innvl, nvlist_t *outnvl) 3385 { 3386 int error = 0; 3387 nvlist_t *nvprops = NULL; 3388 char *origin_name; 3389 3390 if (nvlist_lookup_string(innvl, "origin", &origin_name) != 0) 3391 return (SET_ERROR(EINVAL)); 3392 (void) nvlist_lookup_nvlist(innvl, "props", &nvprops); 3393 3394 if (strchr(fsname, '@') || 3395 strchr(fsname, '%')) 3396 return (SET_ERROR(EINVAL)); 3397 3398 if (dataset_namecheck(origin_name, NULL, NULL) != 0) 3399 return (SET_ERROR(EINVAL)); 3400 3401 error = dmu_objset_clone(fsname, origin_name); 3402 3403 /* 3404 * It would be nice to do this atomically. 3405 */ 3406 if (error == 0) { 3407 error = zfs_set_prop_nvlist(fsname, ZPROP_SRC_LOCAL, 3408 nvprops, outnvl); 3409 if (error != 0) 3410 (void) dsl_destroy_head(fsname); 3411 } 3412 return (error); 3413 } 3414 3415 /* ARGSUSED */ 3416 static int 3417 zfs_ioc_remap(const char *fsname, nvlist_t *innvl, nvlist_t *outnvl) 3418 { 3419 if (strchr(fsname, '@') || 3420 strchr(fsname, '%')) 3421 return (SET_ERROR(EINVAL)); 3422 3423 return (dmu_objset_remap_indirects(fsname)); 3424 } 3425 3426 /* 3427 * innvl: { 3428 * "snaps" -> { snapshot1, snapshot2 } 3429 * (optional) "props" -> { prop -> value (string) } 3430 * } 3431 * 3432 * outnvl: snapshot -> error code (int32) 3433 */ 3434 static int 3435 zfs_ioc_snapshot(const char *poolname, nvlist_t *innvl, nvlist_t *outnvl) 3436 { 3437 nvlist_t *snaps; 3438 nvlist_t *props = NULL; 3439 int error, poollen; 3440 nvpair_t *pair; 3441 3442 (void) nvlist_lookup_nvlist(innvl, "props", &props); 3443 if ((error = zfs_check_userprops(poolname, props)) != 0) 3444 return (error); 3445 3446 if (!nvlist_empty(props) && 3447 zfs_earlier_version(poolname, SPA_VERSION_SNAP_PROPS)) 3448 return (SET_ERROR(ENOTSUP)); 3449 3450 if (nvlist_lookup_nvlist(innvl, "snaps", &snaps) != 0) 3451 return (SET_ERROR(EINVAL)); 3452 poollen = strlen(poolname); 3453 for (pair = nvlist_next_nvpair(snaps, NULL); pair != NULL; 3454 pair = nvlist_next_nvpair(snaps, pair)) { 3455 const char *name = nvpair_name(pair); 3456 const char *cp = strchr(name, '@'); 3457 3458 /* 3459 * The snap name must contain an @, and the part after it must 3460 * contain only valid characters. 3461 */ 3462 if (cp == NULL || 3463 zfs_component_namecheck(cp + 1, NULL, NULL) != 0) 3464 return (SET_ERROR(EINVAL)); 3465 3466 /* 3467 * The snap must be in the specified pool. 3468 */ 3469 if (strncmp(name, poolname, poollen) != 0 || 3470 (name[poollen] != '/' && name[poollen] != '@')) 3471 return (SET_ERROR(EXDEV)); 3472 3473 /* This must be the only snap of this fs. */ 3474 for (nvpair_t *pair2 = nvlist_next_nvpair(snaps, pair); 3475 pair2 != NULL; pair2 = nvlist_next_nvpair(snaps, pair2)) { 3476 if (strncmp(name, nvpair_name(pair2), cp - name + 1) 3477 == 0) { 3478 return (SET_ERROR(EXDEV)); 3479 } 3480 } 3481 } 3482 3483 error = dsl_dataset_snapshot(snaps, props, outnvl); 3484 return (error); 3485 } 3486 3487 /* 3488 * innvl: "message" -> string 3489 */ 3490 /* ARGSUSED */ 3491 static int 3492 zfs_ioc_log_history(const char *unused, nvlist_t *innvl, nvlist_t *outnvl) 3493 { 3494 char *message; 3495 spa_t *spa; 3496 int error; 3497 char *poolname; 3498 3499 /* 3500 * The poolname in the ioctl is not set, we get it from the TSD, 3501 * which was set at the end of the last successful ioctl that allows 3502 * logging. The secpolicy func already checked that it is set. 3503 * Only one log ioctl is allowed after each successful ioctl, so 3504 * we clear the TSD here. 3505 */ 3506 poolname = tsd_get(zfs_allow_log_key); 3507 (void) tsd_set(zfs_allow_log_key, NULL); 3508 error = spa_open(poolname, &spa, FTAG); 3509 strfree(poolname); 3510 if (error != 0) 3511 return (error); 3512 3513 if (nvlist_lookup_string(innvl, "message", &message) != 0) { 3514 spa_close(spa, FTAG); 3515 return (SET_ERROR(EINVAL)); 3516 } 3517 3518 if (spa_version(spa) < SPA_VERSION_ZPOOL_HISTORY) { 3519 spa_close(spa, FTAG); 3520 return (SET_ERROR(ENOTSUP)); 3521 } 3522 3523 error = spa_history_log(spa, message); 3524 spa_close(spa, FTAG); 3525 return (error); 3526 } 3527 3528 /* 3529 * The dp_config_rwlock must not be held when calling this, because the 3530 * unmount may need to write out data. 3531 * 3532 * This function is best-effort. Callers must deal gracefully if it 3533 * remains mounted (or is remounted after this call). 3534 * 3535 * Returns 0 if the argument is not a snapshot, or it is not currently a 3536 * filesystem, or we were able to unmount it. Returns error code otherwise. 3537 */ 3538 void 3539 zfs_unmount_snap(const char *snapname) 3540 { 3541 vfs_t *vfsp = NULL; 3542 zfsvfs_t *zfsvfs = NULL; 3543 3544 if (strchr(snapname, '@') == NULL) 3545 return; 3546 3547 int err = getzfsvfs(snapname, &zfsvfs); 3548 if (err != 0) { 3549 ASSERT3P(zfsvfs, ==, NULL); 3550 return; 3551 } 3552 vfsp = zfsvfs->z_vfs; 3553 3554 ASSERT(!dsl_pool_config_held(dmu_objset_pool(zfsvfs->z_os))); 3555 3556 err = vn_vfswlock(vfsp->vfs_vnodecovered); 3557 VFS_RELE(vfsp); 3558 if (err != 0) 3559 return; 3560 3561 /* 3562 * Always force the unmount for snapshots. 3563 */ 3564 (void) dounmount(vfsp, MS_FORCE, kcred); 3565 } 3566 3567 /* ARGSUSED */ 3568 static int 3569 zfs_unmount_snap_cb(const char *snapname, void *arg) 3570 { 3571 zfs_unmount_snap(snapname); 3572 return (0); 3573 } 3574 3575 /* 3576 * When a clone is destroyed, its origin may also need to be destroyed, 3577 * in which case it must be unmounted. This routine will do that unmount 3578 * if necessary. 3579 */ 3580 void 3581 zfs_destroy_unmount_origin(const char *fsname) 3582 { 3583 int error; 3584 objset_t *os; 3585 dsl_dataset_t *ds; 3586 3587 error = dmu_objset_hold(fsname, FTAG, &os); 3588 if (error != 0) 3589 return; 3590 ds = dmu_objset_ds(os); 3591 if (dsl_dir_is_clone(ds->ds_dir) && DS_IS_DEFER_DESTROY(ds->ds_prev)) { 3592 char originname[ZFS_MAX_DATASET_NAME_LEN]; 3593 dsl_dataset_name(ds->ds_prev, originname); 3594 dmu_objset_rele(os, FTAG); 3595 zfs_unmount_snap(originname); 3596 } else { 3597 dmu_objset_rele(os, FTAG); 3598 } 3599 } 3600 3601 /* 3602 * innvl: { 3603 * "snaps" -> { snapshot1, snapshot2 } 3604 * (optional boolean) "defer" 3605 * } 3606 * 3607 * outnvl: snapshot -> error code (int32) 3608 * 3609 */ 3610 /* ARGSUSED */ 3611 static int 3612 zfs_ioc_destroy_snaps(const char *poolname, nvlist_t *innvl, nvlist_t *outnvl) 3613 { 3614 nvlist_t *snaps; 3615 nvpair_t *pair; 3616 boolean_t defer; 3617 3618 if (nvlist_lookup_nvlist(innvl, "snaps", &snaps) != 0) 3619 return (SET_ERROR(EINVAL)); 3620 defer = nvlist_exists(innvl, "defer"); 3621 3622 for (pair = nvlist_next_nvpair(snaps, NULL); pair != NULL; 3623 pair = nvlist_next_nvpair(snaps, pair)) { 3624 zfs_unmount_snap(nvpair_name(pair)); 3625 } 3626 3627 return (dsl_destroy_snapshots_nvl(snaps, defer, outnvl)); 3628 } 3629 3630 /* 3631 * Create bookmarks. Bookmark names are of the form <fs>#<bmark>. 3632 * All bookmarks must be in the same pool. 3633 * 3634 * innvl: { 3635 * bookmark1 -> snapshot1, bookmark2 -> snapshot2 3636 * } 3637 * 3638 * outnvl: bookmark -> error code (int32) 3639 * 3640 */ 3641 /* ARGSUSED */ 3642 static int 3643 zfs_ioc_bookmark(const char *poolname, nvlist_t *innvl, nvlist_t *outnvl) 3644 { 3645 for (nvpair_t *pair = nvlist_next_nvpair(innvl, NULL); 3646 pair != NULL; pair = nvlist_next_nvpair(innvl, pair)) { 3647 char *snap_name; 3648 3649 /* 3650 * Verify the snapshot argument. 3651 */ 3652 if (nvpair_value_string(pair, &snap_name) != 0) 3653 return (SET_ERROR(EINVAL)); 3654 3655 3656 /* Verify that the keys (bookmarks) are unique */ 3657 for (nvpair_t *pair2 = nvlist_next_nvpair(innvl, pair); 3658 pair2 != NULL; pair2 = nvlist_next_nvpair(innvl, pair2)) { 3659 if (strcmp(nvpair_name(pair), nvpair_name(pair2)) == 0) 3660 return (SET_ERROR(EINVAL)); 3661 } 3662 } 3663 3664 return (dsl_bookmark_create(innvl, outnvl)); 3665 } 3666 3667 /* 3668 * innvl: { 3669 * property 1, property 2, ... 3670 * } 3671 * 3672 * outnvl: { 3673 * bookmark name 1 -> { property 1, property 2, ... }, 3674 * bookmark name 2 -> { property 1, property 2, ... } 3675 * } 3676 * 3677 */ 3678 static int 3679 zfs_ioc_get_bookmarks(const char *fsname, nvlist_t *innvl, nvlist_t *outnvl) 3680 { 3681 return (dsl_get_bookmarks(fsname, innvl, outnvl)); 3682 } 3683 3684 /* 3685 * innvl: { 3686 * bookmark name 1, bookmark name 2 3687 * } 3688 * 3689 * outnvl: bookmark -> error code (int32) 3690 * 3691 */ 3692 static int 3693 zfs_ioc_destroy_bookmarks(const char *poolname, nvlist_t *innvl, 3694 nvlist_t *outnvl) 3695 { 3696 int error, poollen; 3697 3698 poollen = strlen(poolname); 3699 for (nvpair_t *pair = nvlist_next_nvpair(innvl, NULL); 3700 pair != NULL; pair = nvlist_next_nvpair(innvl, pair)) { 3701 const char *name = nvpair_name(pair); 3702 const char *cp = strchr(name, '#'); 3703 3704 /* 3705 * The bookmark name must contain an #, and the part after it 3706 * must contain only valid characters. 3707 */ 3708 if (cp == NULL || 3709 zfs_component_namecheck(cp + 1, NULL, NULL) != 0) 3710 return (SET_ERROR(EINVAL)); 3711 3712 /* 3713 * The bookmark must be in the specified pool. 3714 */ 3715 if (strncmp(name, poolname, poollen) != 0 || 3716 (name[poollen] != '/' && name[poollen] != '#')) 3717 return (SET_ERROR(EXDEV)); 3718 } 3719 3720 error = dsl_bookmark_destroy(innvl, outnvl); 3721 return (error); 3722 } 3723 3724 static int 3725 zfs_ioc_channel_program(const char *poolname, nvlist_t *innvl, 3726 nvlist_t *outnvl) 3727 { 3728 char *program; 3729 uint64_t instrlimit, memlimit; 3730 boolean_t sync_flag; 3731 nvpair_t *nvarg = NULL; 3732 3733 if (0 != nvlist_lookup_string(innvl, ZCP_ARG_PROGRAM, &program)) { 3734 return (EINVAL); 3735 } 3736 if (0 != nvlist_lookup_boolean_value(innvl, ZCP_ARG_SYNC, &sync_flag)) { 3737 sync_flag = B_TRUE; 3738 } 3739 if (0 != nvlist_lookup_uint64(innvl, ZCP_ARG_INSTRLIMIT, &instrlimit)) { 3740 instrlimit = ZCP_DEFAULT_INSTRLIMIT; 3741 } 3742 if (0 != nvlist_lookup_uint64(innvl, ZCP_ARG_MEMLIMIT, &memlimit)) { 3743 memlimit = ZCP_DEFAULT_MEMLIMIT; 3744 } 3745 if (0 != nvlist_lookup_nvpair(innvl, ZCP_ARG_ARGLIST, &nvarg)) { 3746 return (EINVAL); 3747 } 3748 3749 if (instrlimit == 0 || instrlimit > zfs_lua_max_instrlimit) 3750 return (EINVAL); 3751 if (memlimit == 0 || memlimit > zfs_lua_max_memlimit) 3752 return (EINVAL); 3753 3754 return (zcp_eval(poolname, program, sync_flag, instrlimit, memlimit, 3755 nvarg, outnvl)); 3756 } 3757 3758 /* 3759 * innvl: unused 3760 * outnvl: empty 3761 */ 3762 /* ARGSUSED */ 3763 static int 3764 zfs_ioc_pool_checkpoint(const char *poolname, nvlist_t *innvl, nvlist_t *outnvl) 3765 { 3766 return (spa_checkpoint(poolname)); 3767 } 3768 3769 /* 3770 * innvl: unused 3771 * outnvl: empty 3772 */ 3773 /* ARGSUSED */ 3774 static int 3775 zfs_ioc_pool_discard_checkpoint(const char *poolname, nvlist_t *innvl, 3776 nvlist_t *outnvl) 3777 { 3778 return (spa_checkpoint_discard(poolname)); 3779 } 3780 3781 /* 3782 * inputs: 3783 * zc_name name of dataset to destroy 3784 * zc_defer_destroy mark for deferred destroy 3785 * 3786 * outputs: none 3787 */ 3788 static int 3789 zfs_ioc_destroy(zfs_cmd_t *zc) 3790 { 3791 objset_t *os; 3792 dmu_objset_type_t ost; 3793 int err; 3794 3795 err = dmu_objset_hold(zc->zc_name, FTAG, &os); 3796 if (err != 0) 3797 return (err); 3798 ost = dmu_objset_type(os); 3799 dmu_objset_rele(os, FTAG); 3800 3801 if (ost == DMU_OST_ZFS) 3802 zfs_unmount_snap(zc->zc_name); 3803 3804 if (strchr(zc->zc_name, '@')) { 3805 err = dsl_destroy_snapshot(zc->zc_name, zc->zc_defer_destroy); 3806 } else { 3807 err = dsl_destroy_head(zc->zc_name); 3808 if (err == EEXIST) { 3809 /* 3810 * It is possible that the given DS may have 3811 * hidden child (%recv) datasets - "leftovers" 3812 * resulting from the previously interrupted 3813 * 'zfs receive'. 3814 * 3815 * 6 extra bytes for /%recv 3816 */ 3817 char namebuf[ZFS_MAX_DATASET_NAME_LEN + 6]; 3818 3819 if (snprintf(namebuf, sizeof (namebuf), "%s/%s", 3820 zc->zc_name, recv_clone_name) >= 3821 sizeof (namebuf)) 3822 return (SET_ERROR(EINVAL)); 3823 3824 /* 3825 * Try to remove the hidden child (%recv) and after 3826 * that try to remove the target dataset. 3827 * If the hidden child (%recv) does not exist 3828 * the original error (EEXIST) will be returned 3829 */ 3830 err = dsl_destroy_head(namebuf); 3831 if (err == 0) 3832 err = dsl_destroy_head(zc->zc_name); 3833 else if (err == ENOENT) 3834 err = SET_ERROR(EEXIST); 3835 } 3836 } 3837 if (ost == DMU_OST_ZVOL && err == 0) 3838 (void) zvol_remove_minor(zc->zc_name); 3839 return (err); 3840 } 3841 3842 /* 3843 * innvl: { 3844 * "initialize_command" -> POOL_INITIALIZE_{CANCEL|START|SUSPEND} (uint64) 3845 * "initialize_vdevs": { -> guids to initialize (nvlist) 3846 * "vdev_path_1": vdev_guid_1, (uint64), 3847 * "vdev_path_2": vdev_guid_2, (uint64), 3848 * ... 3849 * }, 3850 * } 3851 * 3852 * outnvl: { 3853 * "initialize_vdevs": { -> initialization errors (nvlist) 3854 * "vdev_path_1": errno, see function body for possible errnos (uint64) 3855 * "vdev_path_2": errno, ... (uint64) 3856 * ... 3857 * } 3858 * } 3859 * 3860 * EINVAL is returned for an unknown command or if any of the provided vdev 3861 * guids have be specified with a type other than uint64. 3862 */ 3863 static int 3864 zfs_ioc_pool_initialize(const char *poolname, nvlist_t *innvl, nvlist_t *outnvl) 3865 { 3866 uint64_t cmd_type; 3867 if (nvlist_lookup_uint64(innvl, ZPOOL_INITIALIZE_COMMAND, 3868 &cmd_type) != 0) { 3869 return (SET_ERROR(EINVAL)); 3870 } 3871 3872 if (!(cmd_type == POOL_INITIALIZE_CANCEL || 3873 cmd_type == POOL_INITIALIZE_START || 3874 cmd_type == POOL_INITIALIZE_SUSPEND)) { 3875 return (SET_ERROR(EINVAL)); 3876 } 3877 3878 nvlist_t *vdev_guids; 3879 if (nvlist_lookup_nvlist(innvl, ZPOOL_INITIALIZE_VDEVS, 3880 &vdev_guids) != 0) { 3881 return (SET_ERROR(EINVAL)); 3882 } 3883 3884 for (nvpair_t *pair = nvlist_next_nvpair(vdev_guids, NULL); 3885 pair != NULL; pair = nvlist_next_nvpair(vdev_guids, pair)) { 3886 uint64_t vdev_guid; 3887 if (nvpair_value_uint64(pair, &vdev_guid) != 0) { 3888 return (SET_ERROR(EINVAL)); 3889 } 3890 } 3891 3892 spa_t *spa; 3893 int error = spa_open(poolname, &spa, FTAG); 3894 if (error != 0) 3895 return (error); 3896 3897 nvlist_t *vdev_errlist = fnvlist_alloc(); 3898 int total_errors = spa_vdev_initialize(spa, vdev_guids, cmd_type, 3899 vdev_errlist); 3900 3901 if (fnvlist_size(vdev_errlist) > 0) { 3902 fnvlist_add_nvlist(outnvl, ZPOOL_INITIALIZE_VDEVS, 3903 vdev_errlist); 3904 } 3905 fnvlist_free(vdev_errlist); 3906 3907 spa_close(spa, FTAG); 3908 return (total_errors > 0 ? EINVAL : 0); 3909 } 3910 3911 /* 3912 * innvl: { 3913 * "trim_command" -> POOL_TRIM_{CANCEL|START|SUSPEND} (uint64) 3914 * "trim_vdevs": { -> guids to TRIM (nvlist) 3915 * "vdev_path_1": vdev_guid_1, (uint64), 3916 * "vdev_path_2": vdev_guid_2, (uint64), 3917 * ... 3918 * }, 3919 * "trim_rate" -> Target TRIM rate in bytes/sec. 3920 * "trim_secure" -> Set to request a secure TRIM. 3921 * } 3922 * 3923 * outnvl: { 3924 * "trim_vdevs": { -> TRIM errors (nvlist) 3925 * "vdev_path_1": errno, see function body for possible errnos (uint64) 3926 * "vdev_path_2": errno, ... (uint64) 3927 * ... 3928 * } 3929 * } 3930 * 3931 * EINVAL is returned for an unknown command or if any of the provided vdev 3932 * guids have be specified with a type other than uint64. 3933 */ 3934 3935 static int 3936 zfs_ioc_pool_trim(const char *poolname, nvlist_t *innvl, nvlist_t *outnvl) 3937 { 3938 uint64_t cmd_type; 3939 if (nvlist_lookup_uint64(innvl, ZPOOL_TRIM_COMMAND, &cmd_type) != 0) 3940 return (SET_ERROR(EINVAL)); 3941 3942 if (!(cmd_type == POOL_TRIM_CANCEL || 3943 cmd_type == POOL_TRIM_START || 3944 cmd_type == POOL_TRIM_SUSPEND)) { 3945 return (SET_ERROR(EINVAL)); 3946 } 3947 3948 nvlist_t *vdev_guids; 3949 if (nvlist_lookup_nvlist(innvl, ZPOOL_TRIM_VDEVS, &vdev_guids) != 0) 3950 return (SET_ERROR(EINVAL)); 3951 3952 for (nvpair_t *pair = nvlist_next_nvpair(vdev_guids, NULL); 3953 pair != NULL; pair = nvlist_next_nvpair(vdev_guids, pair)) { 3954 uint64_t vdev_guid; 3955 if (nvpair_value_uint64(pair, &vdev_guid) != 0) { 3956 return (SET_ERROR(EINVAL)); 3957 } 3958 } 3959 3960 /* Optional, defaults to maximum rate when not provided */ 3961 uint64_t rate; 3962 if (nvlist_lookup_uint64(innvl, ZPOOL_TRIM_RATE, &rate) != 0) 3963 rate = 0; 3964 3965 /* Optional, defaults to standard TRIM when not provided */ 3966 boolean_t secure; 3967 if (nvlist_lookup_boolean_value(innvl, ZPOOL_TRIM_SECURE, 3968 &secure) != 0) { 3969 secure = B_FALSE; 3970 } 3971 3972 spa_t *spa; 3973 int error = spa_open(poolname, &spa, FTAG); 3974 if (error != 0) 3975 return (error); 3976 3977 nvlist_t *vdev_errlist = fnvlist_alloc(); 3978 int total_errors = spa_vdev_trim(spa, vdev_guids, cmd_type, 3979 rate, !!zfs_trim_metaslab_skip, secure, vdev_errlist); 3980 3981 if (fnvlist_size(vdev_errlist) > 0) 3982 fnvlist_add_nvlist(outnvl, ZPOOL_TRIM_VDEVS, vdev_errlist); 3983 3984 fnvlist_free(vdev_errlist); 3985 3986 spa_close(spa, FTAG); 3987 return (total_errors > 0 ? EINVAL : 0); 3988 } 3989 3990 /* 3991 * fsname is name of dataset to rollback (to most recent snapshot) 3992 * 3993 * innvl may contain name of expected target snapshot 3994 * 3995 * outnvl: "target" -> name of most recent snapshot 3996 * } 3997 */ 3998 /* ARGSUSED */ 3999 static int 4000 zfs_ioc_rollback(const char *fsname, nvlist_t *innvl, nvlist_t *outnvl) 4001 { 4002 zfsvfs_t *zfsvfs; 4003 char *target = NULL; 4004 int error; 4005 4006 (void) nvlist_lookup_string(innvl, "target", &target); 4007 if (target != NULL) { 4008 const char *cp = strchr(target, '@'); 4009 4010 /* 4011 * The snap name must contain an @, and the part after it must 4012 * contain only valid characters. 4013 */ 4014 if (cp == NULL || 4015 zfs_component_namecheck(cp + 1, NULL, NULL) != 0) 4016 return (SET_ERROR(EINVAL)); 4017 } 4018 4019 if (getzfsvfs(fsname, &zfsvfs) == 0) { 4020 dsl_dataset_t *ds; 4021 4022 ds = dmu_objset_ds(zfsvfs->z_os); 4023 error = zfs_suspend_fs(zfsvfs); 4024 if (error == 0) { 4025 int resume_err; 4026 4027 error = dsl_dataset_rollback(fsname, target, zfsvfs, 4028 outnvl); 4029 resume_err = zfs_resume_fs(zfsvfs, ds); 4030 error = error ? error : resume_err; 4031 } 4032 VFS_RELE(zfsvfs->z_vfs); 4033 } else { 4034 error = dsl_dataset_rollback(fsname, target, NULL, outnvl); 4035 } 4036 return (error); 4037 } 4038 4039 static int 4040 recursive_unmount(const char *fsname, void *arg) 4041 { 4042 const char *snapname = arg; 4043 char fullname[ZFS_MAX_DATASET_NAME_LEN]; 4044 4045 (void) snprintf(fullname, sizeof (fullname), "%s@%s", fsname, snapname); 4046 zfs_unmount_snap(fullname); 4047 4048 return (0); 4049 } 4050 4051 /* 4052 * inputs: 4053 * zc_name old name of dataset 4054 * zc_value new name of dataset 4055 * zc_cookie recursive flag (only valid for snapshots) 4056 * 4057 * outputs: none 4058 */ 4059 static int 4060 zfs_ioc_rename(zfs_cmd_t *zc) 4061 { 4062 objset_t *os; 4063 dmu_objset_type_t ost; 4064 boolean_t recursive = zc->zc_cookie & 1; 4065 char *at; 4066 int err; 4067 4068 /* "zfs rename" from and to ...%recv datasets should both fail */ 4069 zc->zc_name[sizeof (zc->zc_name) - 1] = '\0'; 4070 zc->zc_value[sizeof (zc->zc_value) - 1] = '\0'; 4071 if (dataset_namecheck(zc->zc_name, NULL, NULL) != 0 || 4072 dataset_namecheck(zc->zc_value, NULL, NULL) != 0 || 4073 strchr(zc->zc_name, '%') || strchr(zc->zc_value, '%')) 4074 return (SET_ERROR(EINVAL)); 4075 4076 err = dmu_objset_hold(zc->zc_name, FTAG, &os); 4077 if (err != 0) 4078 return (err); 4079 ost = dmu_objset_type(os); 4080 dmu_objset_rele(os, FTAG); 4081 4082 at = strchr(zc->zc_name, '@'); 4083 if (at != NULL) { 4084 /* snaps must be in same fs */ 4085 int error; 4086 4087 if (strncmp(zc->zc_name, zc->zc_value, at - zc->zc_name + 1)) 4088 return (SET_ERROR(EXDEV)); 4089 *at = '\0'; 4090 if (ost == DMU_OST_ZFS) { 4091 error = dmu_objset_find(zc->zc_name, 4092 recursive_unmount, at + 1, 4093 recursive ? DS_FIND_CHILDREN : 0); 4094 if (error != 0) { 4095 *at = '@'; 4096 return (error); 4097 } 4098 } 4099 error = dsl_dataset_rename_snapshot(zc->zc_name, 4100 at + 1, strchr(zc->zc_value, '@') + 1, recursive); 4101 *at = '@'; 4102 4103 return (error); 4104 } else { 4105 if (ost == DMU_OST_ZVOL) 4106 (void) zvol_remove_minor(zc->zc_name); 4107 return (dsl_dir_rename(zc->zc_name, zc->zc_value)); 4108 } 4109 } 4110 4111 static int 4112 zfs_check_settable(const char *dsname, nvpair_t *pair, cred_t *cr) 4113 { 4114 const char *propname = nvpair_name(pair); 4115 boolean_t issnap = (strchr(dsname, '@') != NULL); 4116 zfs_prop_t prop = zfs_name_to_prop(propname); 4117 uint64_t intval; 4118 int err; 4119 4120 if (prop == ZPROP_INVAL) { 4121 if (zfs_prop_user(propname)) { 4122 if (err = zfs_secpolicy_write_perms(dsname, 4123 ZFS_DELEG_PERM_USERPROP, cr)) 4124 return (err); 4125 return (0); 4126 } 4127 4128 if (!issnap && zfs_prop_userquota(propname)) { 4129 const char *perm = NULL; 4130 const char *uq_prefix = 4131 zfs_userquota_prop_prefixes[ZFS_PROP_USERQUOTA]; 4132 const char *gq_prefix = 4133 zfs_userquota_prop_prefixes[ZFS_PROP_GROUPQUOTA]; 4134 const char *uiq_prefix = 4135 zfs_userquota_prop_prefixes[ZFS_PROP_USEROBJQUOTA]; 4136 const char *giq_prefix = 4137 zfs_userquota_prop_prefixes[ZFS_PROP_GROUPOBJQUOTA]; 4138 const char *pq_prefix = 4139 zfs_userquota_prop_prefixes[ZFS_PROP_PROJECTQUOTA]; 4140 const char *piq_prefix = zfs_userquota_prop_prefixes[\ 4141 ZFS_PROP_PROJECTOBJQUOTA]; 4142 4143 if (strncmp(propname, uq_prefix, 4144 strlen(uq_prefix)) == 0) { 4145 perm = ZFS_DELEG_PERM_USERQUOTA; 4146 } else if (strncmp(propname, uiq_prefix, 4147 strlen(uiq_prefix)) == 0) { 4148 perm = ZFS_DELEG_PERM_USEROBJQUOTA; 4149 } else if (strncmp(propname, gq_prefix, 4150 strlen(gq_prefix)) == 0) { 4151 perm = ZFS_DELEG_PERM_GROUPQUOTA; 4152 } else if (strncmp(propname, giq_prefix, 4153 strlen(giq_prefix)) == 0) { 4154 perm = ZFS_DELEG_PERM_GROUPOBJQUOTA; 4155 } else if (strncmp(propname, pq_prefix, 4156 strlen(pq_prefix)) == 0) { 4157 perm = ZFS_DELEG_PERM_PROJECTQUOTA; 4158 } else if (strncmp(propname, piq_prefix, 4159 strlen(piq_prefix)) == 0) { 4160 perm = ZFS_DELEG_PERM_PROJECTOBJQUOTA; 4161 } else { 4162 /* {USER|GROUP|PROJECT}USED are read-only */ 4163 return (SET_ERROR(EINVAL)); 4164 } 4165 4166 if (err = zfs_secpolicy_write_perms(dsname, perm, cr)) 4167 return (err); 4168 return (0); 4169 } 4170 4171 return (SET_ERROR(EINVAL)); 4172 } 4173 4174 if (issnap) 4175 return (SET_ERROR(EINVAL)); 4176 4177 if (nvpair_type(pair) == DATA_TYPE_NVLIST) { 4178 /* 4179 * dsl_prop_get_all_impl() returns properties in this 4180 * format. 4181 */ 4182 nvlist_t *attrs; 4183 VERIFY(nvpair_value_nvlist(pair, &attrs) == 0); 4184 VERIFY(nvlist_lookup_nvpair(attrs, ZPROP_VALUE, 4185 &pair) == 0); 4186 } 4187 4188 /* 4189 * Check that this value is valid for this pool version 4190 */ 4191 switch (prop) { 4192 case ZFS_PROP_COMPRESSION: 4193 /* 4194 * If the user specified gzip compression, make sure 4195 * the SPA supports it. We ignore any errors here since 4196 * we'll catch them later. 4197 */ 4198 if (nvpair_value_uint64(pair, &intval) == 0) { 4199 if (intval >= ZIO_COMPRESS_GZIP_1 && 4200 intval <= ZIO_COMPRESS_GZIP_9 && 4201 zfs_earlier_version(dsname, 4202 SPA_VERSION_GZIP_COMPRESSION)) { 4203 return (SET_ERROR(ENOTSUP)); 4204 } 4205 4206 if (intval == ZIO_COMPRESS_ZLE && 4207 zfs_earlier_version(dsname, 4208 SPA_VERSION_ZLE_COMPRESSION)) 4209 return (SET_ERROR(ENOTSUP)); 4210 4211 if (intval == ZIO_COMPRESS_LZ4) { 4212 spa_t *spa; 4213 4214 if ((err = spa_open(dsname, &spa, FTAG)) != 0) 4215 return (err); 4216 4217 if (!spa_feature_is_enabled(spa, 4218 SPA_FEATURE_LZ4_COMPRESS)) { 4219 spa_close(spa, FTAG); 4220 return (SET_ERROR(ENOTSUP)); 4221 } 4222 spa_close(spa, FTAG); 4223 } 4224 4225 /* 4226 * If this is a bootable dataset then 4227 * verify that the compression algorithm 4228 * is supported for booting. We must return 4229 * something other than ENOTSUP since it 4230 * implies a downrev pool version. 4231 */ 4232 if (zfs_is_bootfs(dsname) && 4233 !BOOTFS_COMPRESS_VALID(intval)) { 4234 return (SET_ERROR(ERANGE)); 4235 } 4236 } 4237 break; 4238 4239 case ZFS_PROP_COPIES: 4240 if (zfs_earlier_version(dsname, SPA_VERSION_DITTO_BLOCKS)) 4241 return (SET_ERROR(ENOTSUP)); 4242 break; 4243 4244 case ZFS_PROP_RECORDSIZE: 4245 /* Record sizes above 128k need the feature to be enabled */ 4246 if (nvpair_value_uint64(pair, &intval) == 0 && 4247 intval > SPA_OLD_MAXBLOCKSIZE) { 4248 spa_t *spa; 4249 4250 /* 4251 * We don't allow setting the property above 1MB, 4252 * unless the tunable has been changed. 4253 */ 4254 if (intval > zfs_max_recordsize || 4255 intval > SPA_MAXBLOCKSIZE) 4256 return (SET_ERROR(ERANGE)); 4257 4258 if ((err = spa_open(dsname, &spa, FTAG)) != 0) 4259 return (err); 4260 4261 if (!spa_feature_is_enabled(spa, 4262 SPA_FEATURE_LARGE_BLOCKS)) { 4263 spa_close(spa, FTAG); 4264 return (SET_ERROR(ENOTSUP)); 4265 } 4266 spa_close(spa, FTAG); 4267 } 4268 break; 4269 4270 case ZFS_PROP_DNODESIZE: 4271 /* Dnode sizes above 512 need the feature to be enabled */ 4272 if (nvpair_value_uint64(pair, &intval) == 0 && 4273 intval != ZFS_DNSIZE_LEGACY) { 4274 spa_t *spa; 4275 4276 if ((err = spa_open(dsname, &spa, FTAG)) != 0) 4277 return (err); 4278 4279 if (!spa_feature_is_enabled(spa, 4280 SPA_FEATURE_LARGE_DNODE)) { 4281 spa_close(spa, FTAG); 4282 return (SET_ERROR(ENOTSUP)); 4283 } 4284 spa_close(spa, FTAG); 4285 } 4286 break; 4287 4288 case ZFS_PROP_SPECIAL_SMALL_BLOCKS: 4289 /* 4290 * This property could require the allocation classes 4291 * feature to be active for setting, however we allow 4292 * it so that tests of settable properties succeed. 4293 * The CLI will issue a warning in this case. 4294 */ 4295 break; 4296 4297 case ZFS_PROP_SHARESMB: 4298 if (zpl_earlier_version(dsname, ZPL_VERSION_FUID)) 4299 return (SET_ERROR(ENOTSUP)); 4300 break; 4301 4302 case ZFS_PROP_ACLINHERIT: 4303 if (nvpair_type(pair) == DATA_TYPE_UINT64 && 4304 nvpair_value_uint64(pair, &intval) == 0) { 4305 if (intval == ZFS_ACL_PASSTHROUGH_X && 4306 zfs_earlier_version(dsname, 4307 SPA_VERSION_PASSTHROUGH_X)) 4308 return (SET_ERROR(ENOTSUP)); 4309 } 4310 break; 4311 4312 case ZFS_PROP_CHECKSUM: 4313 case ZFS_PROP_DEDUP: 4314 { 4315 spa_feature_t feature; 4316 spa_t *spa; 4317 4318 /* dedup feature version checks */ 4319 if (prop == ZFS_PROP_DEDUP && 4320 zfs_earlier_version(dsname, SPA_VERSION_DEDUP)) 4321 return (SET_ERROR(ENOTSUP)); 4322 4323 if (nvpair_value_uint64(pair, &intval) != 0) 4324 return (SET_ERROR(EINVAL)); 4325 4326 /* check prop value is enabled in features */ 4327 feature = zio_checksum_to_feature(intval & ZIO_CHECKSUM_MASK); 4328 if (feature == SPA_FEATURE_NONE) 4329 break; 4330 4331 if ((err = spa_open(dsname, &spa, FTAG)) != 0) 4332 return (err); 4333 4334 if (!spa_feature_is_enabled(spa, feature)) { 4335 spa_close(spa, FTAG); 4336 return (SET_ERROR(ENOTSUP)); 4337 } 4338 spa_close(spa, FTAG); 4339 break; 4340 } 4341 } 4342 4343 return (zfs_secpolicy_setprop(dsname, prop, pair, CRED())); 4344 } 4345 4346 /* 4347 * Checks for a race condition to make sure we don't increment a feature flag 4348 * multiple times. 4349 */ 4350 static int 4351 zfs_prop_activate_feature_check(void *arg, dmu_tx_t *tx) 4352 { 4353 spa_t *spa = dmu_tx_pool(tx)->dp_spa; 4354 spa_feature_t *featurep = arg; 4355 4356 if (!spa_feature_is_active(spa, *featurep)) 4357 return (0); 4358 else 4359 return (SET_ERROR(EBUSY)); 4360 } 4361 4362 /* 4363 * The callback invoked on feature activation in the sync task caused by 4364 * zfs_prop_activate_feature. 4365 */ 4366 static void 4367 zfs_prop_activate_feature_sync(void *arg, dmu_tx_t *tx) 4368 { 4369 spa_t *spa = dmu_tx_pool(tx)->dp_spa; 4370 spa_feature_t *featurep = arg; 4371 4372 spa_feature_incr(spa, *featurep, tx); 4373 } 4374 4375 /* 4376 * Activates a feature on a pool in response to a property setting. This 4377 * creates a new sync task which modifies the pool to reflect the feature 4378 * as being active. 4379 */ 4380 static int 4381 zfs_prop_activate_feature(spa_t *spa, spa_feature_t feature) 4382 { 4383 int err; 4384 4385 /* EBUSY here indicates that the feature is already active */ 4386 err = dsl_sync_task(spa_name(spa), 4387 zfs_prop_activate_feature_check, zfs_prop_activate_feature_sync, 4388 &feature, 2, ZFS_SPACE_CHECK_RESERVED); 4389 4390 if (err != 0 && err != EBUSY) 4391 return (err); 4392 else 4393 return (0); 4394 } 4395 4396 /* 4397 * Removes properties from the given props list that fail permission checks 4398 * needed to clear them and to restore them in case of a receive error. For each 4399 * property, make sure we have both set and inherit permissions. 4400 * 4401 * Returns the first error encountered if any permission checks fail. If the 4402 * caller provides a non-NULL errlist, it also gives the complete list of names 4403 * of all the properties that failed a permission check along with the 4404 * corresponding error numbers. The caller is responsible for freeing the 4405 * returned errlist. 4406 * 4407 * If every property checks out successfully, zero is returned and the list 4408 * pointed at by errlist is NULL. 4409 */ 4410 static int 4411 zfs_check_clearable(char *dataset, nvlist_t *props, nvlist_t **errlist) 4412 { 4413 zfs_cmd_t *zc; 4414 nvpair_t *pair, *next_pair; 4415 nvlist_t *errors; 4416 int err, rv = 0; 4417 4418 if (props == NULL) 4419 return (0); 4420 4421 VERIFY(nvlist_alloc(&errors, NV_UNIQUE_NAME, KM_SLEEP) == 0); 4422 4423 zc = kmem_alloc(sizeof (zfs_cmd_t), KM_SLEEP); 4424 (void) strcpy(zc->zc_name, dataset); 4425 pair = nvlist_next_nvpair(props, NULL); 4426 while (pair != NULL) { 4427 next_pair = nvlist_next_nvpair(props, pair); 4428 4429 (void) strcpy(zc->zc_value, nvpair_name(pair)); 4430 if ((err = zfs_check_settable(dataset, pair, CRED())) != 0 || 4431 (err = zfs_secpolicy_inherit_prop(zc, NULL, CRED())) != 0) { 4432 VERIFY(nvlist_remove_nvpair(props, pair) == 0); 4433 VERIFY(nvlist_add_int32(errors, 4434 zc->zc_value, err) == 0); 4435 } 4436 pair = next_pair; 4437 } 4438 kmem_free(zc, sizeof (zfs_cmd_t)); 4439 4440 if ((pair = nvlist_next_nvpair(errors, NULL)) == NULL) { 4441 nvlist_free(errors); 4442 errors = NULL; 4443 } else { 4444 VERIFY(nvpair_value_int32(pair, &rv) == 0); 4445 } 4446 4447 if (errlist == NULL) 4448 nvlist_free(errors); 4449 else 4450 *errlist = errors; 4451 4452 return (rv); 4453 } 4454 4455 static boolean_t 4456 propval_equals(nvpair_t *p1, nvpair_t *p2) 4457 { 4458 if (nvpair_type(p1) == DATA_TYPE_NVLIST) { 4459 /* dsl_prop_get_all_impl() format */ 4460 nvlist_t *attrs; 4461 VERIFY(nvpair_value_nvlist(p1, &attrs) == 0); 4462 VERIFY(nvlist_lookup_nvpair(attrs, ZPROP_VALUE, 4463 &p1) == 0); 4464 } 4465 4466 if (nvpair_type(p2) == DATA_TYPE_NVLIST) { 4467 nvlist_t *attrs; 4468 VERIFY(nvpair_value_nvlist(p2, &attrs) == 0); 4469 VERIFY(nvlist_lookup_nvpair(attrs, ZPROP_VALUE, 4470 &p2) == 0); 4471 } 4472 4473 if (nvpair_type(p1) != nvpair_type(p2)) 4474 return (B_FALSE); 4475 4476 if (nvpair_type(p1) == DATA_TYPE_STRING) { 4477 char *valstr1, *valstr2; 4478 4479 VERIFY(nvpair_value_string(p1, (char **)&valstr1) == 0); 4480 VERIFY(nvpair_value_string(p2, (char **)&valstr2) == 0); 4481 return (strcmp(valstr1, valstr2) == 0); 4482 } else { 4483 uint64_t intval1, intval2; 4484 4485 VERIFY(nvpair_value_uint64(p1, &intval1) == 0); 4486 VERIFY(nvpair_value_uint64(p2, &intval2) == 0); 4487 return (intval1 == intval2); 4488 } 4489 } 4490 4491 /* 4492 * Remove properties from props if they are not going to change (as determined 4493 * by comparison with origprops). Remove them from origprops as well, since we 4494 * do not need to clear or restore properties that won't change. 4495 */ 4496 static void 4497 props_reduce(nvlist_t *props, nvlist_t *origprops) 4498 { 4499 nvpair_t *pair, *next_pair; 4500 4501 if (origprops == NULL) 4502 return; /* all props need to be received */ 4503 4504 pair = nvlist_next_nvpair(props, NULL); 4505 while (pair != NULL) { 4506 const char *propname = nvpair_name(pair); 4507 nvpair_t *match; 4508 4509 next_pair = nvlist_next_nvpair(props, pair); 4510 4511 if ((nvlist_lookup_nvpair(origprops, propname, 4512 &match) != 0) || !propval_equals(pair, match)) 4513 goto next; /* need to set received value */ 4514 4515 /* don't clear the existing received value */ 4516 (void) nvlist_remove_nvpair(origprops, match); 4517 /* don't bother receiving the property */ 4518 (void) nvlist_remove_nvpair(props, pair); 4519 next: 4520 pair = next_pair; 4521 } 4522 } 4523 4524 /* 4525 * Extract properties that cannot be set PRIOR to the receipt of a dataset. 4526 * For example, refquota cannot be set until after the receipt of a dataset, 4527 * because in replication streams, an older/earlier snapshot may exceed the 4528 * refquota. We want to receive the older/earlier snapshot, but setting 4529 * refquota pre-receipt will set the dsl's ACTUAL quota, which will prevent 4530 * the older/earlier snapshot from being received (with EDQUOT). 4531 * 4532 * The ZFS test "zfs_receive_011_pos" demonstrates such a scenario. 4533 * 4534 * libzfs will need to be judicious handling errors encountered by props 4535 * extracted by this function. 4536 */ 4537 static nvlist_t * 4538 extract_delay_props(nvlist_t *props) 4539 { 4540 nvlist_t *delayprops; 4541 nvpair_t *nvp, *tmp; 4542 static const zfs_prop_t delayable[] = { 4543 ZFS_PROP_REFQUOTA, 4544 ZFS_PROP_KEYLOCATION, 4545 0 4546 }; 4547 int i; 4548 4549 VERIFY(nvlist_alloc(&delayprops, NV_UNIQUE_NAME, KM_SLEEP) == 0); 4550 4551 for (nvp = nvlist_next_nvpair(props, NULL); nvp != NULL; 4552 nvp = nvlist_next_nvpair(props, nvp)) { 4553 /* 4554 * strcmp() is safe because zfs_prop_to_name() always returns 4555 * a bounded string. 4556 */ 4557 for (i = 0; delayable[i] != 0; i++) { 4558 if (strcmp(zfs_prop_to_name(delayable[i]), 4559 nvpair_name(nvp)) == 0) { 4560 break; 4561 } 4562 } 4563 if (delayable[i] != 0) { 4564 tmp = nvlist_prev_nvpair(props, nvp); 4565 VERIFY(nvlist_add_nvpair(delayprops, nvp) == 0); 4566 VERIFY(nvlist_remove_nvpair(props, nvp) == 0); 4567 nvp = tmp; 4568 } 4569 } 4570 4571 if (nvlist_empty(delayprops)) { 4572 nvlist_free(delayprops); 4573 delayprops = NULL; 4574 } 4575 return (delayprops); 4576 } 4577 4578 #ifdef DEBUG 4579 static boolean_t zfs_ioc_recv_inject_err; 4580 #endif 4581 4582 /* 4583 * nvlist 'errors' is always allocated. It will contain descriptions of 4584 * encountered errors, if any. It's the callers responsibility to free. 4585 */ 4586 static int 4587 zfs_ioc_recv_impl(char *tofs, char *tosnap, char *origin, nvlist_t *recvprops, 4588 nvlist_t *localprops, nvlist_t *hidden_args, boolean_t force, 4589 boolean_t resumable, int input_fd, dmu_replay_record_t *begin_record, 4590 int cleanup_fd, uint64_t *read_bytes, uint64_t *errflags, 4591 uint64_t *action_handle, nvlist_t **errors) 4592 { 4593 dmu_recv_cookie_t drc; 4594 int error = 0; 4595 int props_error = 0; 4596 offset_t off; 4597 nvlist_t *local_delayprops = NULL; 4598 nvlist_t *recv_delayprops = NULL; 4599 nvlist_t *origprops = NULL; /* existing properties */ 4600 nvlist_t *origrecvd = NULL; /* existing received properties */ 4601 boolean_t first_recvd_props = B_FALSE; 4602 file_t *input_fp; 4603 4604 *read_bytes = 0; 4605 *errflags = 0; 4606 *errors = fnvlist_alloc(); 4607 4608 input_fp = getf(input_fd); 4609 if (input_fp == NULL) 4610 return (SET_ERROR(EBADF)); 4611 4612 error = dmu_recv_begin(tofs, tosnap, begin_record, force, 4613 resumable, localprops, hidden_args, origin, &drc); 4614 if (error != 0) 4615 goto out; 4616 4617 /* 4618 * Set properties before we receive the stream so that they are applied 4619 * to the new data. Note that we must call dmu_recv_stream() if 4620 * dmu_recv_begin() succeeds. 4621 */ 4622 if (recvprops != NULL && !drc.drc_newfs) { 4623 if (spa_version(dsl_dataset_get_spa(drc.drc_ds)) >= 4624 SPA_VERSION_RECVD_PROPS && 4625 !dsl_prop_get_hasrecvd(tofs)) 4626 first_recvd_props = B_TRUE; 4627 4628 /* 4629 * If new received properties are supplied, they are to 4630 * completely replace the existing received properties, 4631 * so stash away the existing ones. 4632 */ 4633 if (dsl_prop_get_received(tofs, &origrecvd) == 0) { 4634 nvlist_t *errlist = NULL; 4635 /* 4636 * Don't bother writing a property if its value won't 4637 * change (and avoid the unnecessary security checks). 4638 * 4639 * The first receive after SPA_VERSION_RECVD_PROPS is a 4640 * special case where we blow away all local properties 4641 * regardless. 4642 */ 4643 if (!first_recvd_props) 4644 props_reduce(recvprops, origrecvd); 4645 if (zfs_check_clearable(tofs, origrecvd, &errlist) != 0) 4646 (void) nvlist_merge(*errors, errlist, 0); 4647 nvlist_free(errlist); 4648 4649 if (clear_received_props(tofs, origrecvd, 4650 first_recvd_props ? NULL : recvprops) != 0) 4651 *errflags |= ZPROP_ERR_NOCLEAR; 4652 } else { 4653 *errflags |= ZPROP_ERR_NOCLEAR; 4654 } 4655 } 4656 4657 /* 4658 * Stash away existing properties so we can restore them on error unless 4659 * we're doing the first receive after SPA_VERSION_RECVD_PROPS, in which 4660 * case "origrecvd" will take care of that. 4661 */ 4662 if (localprops != NULL && !drc.drc_newfs && !first_recvd_props) { 4663 objset_t *os; 4664 if (dmu_objset_hold(tofs, FTAG, &os) == 0) { 4665 if (dsl_prop_get_all(os, &origprops) != 0) { 4666 *errflags |= ZPROP_ERR_NOCLEAR; 4667 } 4668 dmu_objset_rele(os, FTAG); 4669 } else { 4670 *errflags |= ZPROP_ERR_NOCLEAR; 4671 } 4672 } 4673 4674 if (recvprops != NULL) { 4675 props_error = dsl_prop_set_hasrecvd(tofs); 4676 4677 if (props_error == 0) { 4678 recv_delayprops = extract_delay_props(recvprops); 4679 (void) zfs_set_prop_nvlist(tofs, ZPROP_SRC_RECEIVED, 4680 recvprops, *errors); 4681 } 4682 } 4683 4684 if (localprops != NULL) { 4685 nvlist_t *oprops = fnvlist_alloc(); 4686 nvlist_t *xprops = fnvlist_alloc(); 4687 nvpair_t *nvp = NULL; 4688 4689 while ((nvp = nvlist_next_nvpair(localprops, nvp)) != NULL) { 4690 if (nvpair_type(nvp) == DATA_TYPE_BOOLEAN) { 4691 /* -x property */ 4692 const char *name = nvpair_name(nvp); 4693 zfs_prop_t prop = zfs_name_to_prop(name); 4694 if (prop != ZPROP_INVAL) { 4695 if (!zfs_prop_inheritable(prop)) 4696 continue; 4697 } else if (!zfs_prop_user(name)) 4698 continue; 4699 fnvlist_add_boolean(xprops, name); 4700 } else { 4701 /* -o property=value */ 4702 fnvlist_add_nvpair(oprops, nvp); 4703 } 4704 } 4705 4706 local_delayprops = extract_delay_props(oprops); 4707 (void) zfs_set_prop_nvlist(tofs, ZPROP_SRC_LOCAL, 4708 oprops, *errors); 4709 (void) zfs_set_prop_nvlist(tofs, ZPROP_SRC_INHERITED, 4710 xprops, *errors); 4711 4712 nvlist_free(oprops); 4713 nvlist_free(xprops); 4714 } 4715 4716 off = input_fp->f_offset; 4717 error = dmu_recv_stream(&drc, input_fp->f_vnode, &off, cleanup_fd, 4718 action_handle); 4719 4720 if (error == 0) { 4721 zfsvfs_t *zfsvfs = NULL; 4722 4723 if (getzfsvfs(tofs, &zfsvfs) == 0) { 4724 /* online recv */ 4725 dsl_dataset_t *ds; 4726 int end_err; 4727 4728 ds = dmu_objset_ds(zfsvfs->z_os); 4729 error = zfs_suspend_fs(zfsvfs); 4730 /* 4731 * If the suspend fails, then the recv_end will 4732 * likely also fail, and clean up after itself. 4733 */ 4734 end_err = dmu_recv_end(&drc, zfsvfs); 4735 if (error == 0) 4736 error = zfs_resume_fs(zfsvfs, ds); 4737 error = error ? error : end_err; 4738 VFS_RELE(zfsvfs->z_vfs); 4739 } else { 4740 error = dmu_recv_end(&drc, NULL); 4741 } 4742 4743 /* Set delayed properties now, after we're done receiving. */ 4744 if (recv_delayprops != NULL && error == 0) { 4745 (void) zfs_set_prop_nvlist(tofs, ZPROP_SRC_RECEIVED, 4746 recv_delayprops, *errors); 4747 } 4748 if (local_delayprops != NULL && error == 0) { 4749 (void) zfs_set_prop_nvlist(tofs, ZPROP_SRC_LOCAL, 4750 local_delayprops, *errors); 4751 } 4752 } 4753 4754 /* 4755 * Merge delayed props back in with initial props, in case 4756 * we're DEBUG and zfs_ioc_recv_inject_err is set (which means 4757 * we have to make sure clear_received_props() includes 4758 * the delayed properties). 4759 * 4760 * Since zfs_ioc_recv_inject_err is only in DEBUG kernels, 4761 * using ASSERT() will be just like a VERIFY. 4762 */ 4763 if (recv_delayprops != NULL) { 4764 ASSERT(nvlist_merge(recvprops, recv_delayprops, 0) == 0); 4765 nvlist_free(recv_delayprops); 4766 } 4767 if (local_delayprops != NULL) { 4768 ASSERT(nvlist_merge(localprops, local_delayprops, 0) == 0); 4769 nvlist_free(local_delayprops); 4770 } 4771 4772 *read_bytes = off - input_fp->f_offset; 4773 if (VOP_SEEK(input_fp->f_vnode, input_fp->f_offset, &off, NULL) == 0) 4774 input_fp->f_offset = off; 4775 4776 #ifdef DEBUG 4777 if (zfs_ioc_recv_inject_err) { 4778 zfs_ioc_recv_inject_err = B_FALSE; 4779 error = 1; 4780 } 4781 #endif 4782 4783 /* 4784 * On error, restore the original props. 4785 */ 4786 if (error != 0 && recvprops != NULL && !drc.drc_newfs) { 4787 if (clear_received_props(tofs, recvprops, NULL) != 0) { 4788 /* 4789 * We failed to clear the received properties. 4790 * Since we may have left a $recvd value on the 4791 * system, we can't clear the $hasrecvd flag. 4792 */ 4793 *errflags |= ZPROP_ERR_NORESTORE; 4794 } else if (first_recvd_props) { 4795 dsl_prop_unset_hasrecvd(tofs); 4796 } 4797 4798 if (origrecvd == NULL && !drc.drc_newfs) { 4799 /* We failed to stash the original properties. */ 4800 *errflags |= ZPROP_ERR_NORESTORE; 4801 } 4802 4803 /* 4804 * dsl_props_set() will not convert RECEIVED to LOCAL on or 4805 * after SPA_VERSION_RECVD_PROPS, so we need to specify LOCAL 4806 * explicitly if we're restoring local properties cleared in the 4807 * first new-style receive. 4808 */ 4809 if (origrecvd != NULL && 4810 zfs_set_prop_nvlist(tofs, (first_recvd_props ? 4811 ZPROP_SRC_LOCAL : ZPROP_SRC_RECEIVED), 4812 origrecvd, NULL) != 0) { 4813 /* 4814 * We stashed the original properties but failed to 4815 * restore them. 4816 */ 4817 *errflags |= ZPROP_ERR_NORESTORE; 4818 } 4819 } 4820 if (error != 0 && localprops != NULL && !drc.drc_newfs && 4821 !first_recvd_props) { 4822 nvlist_t *setprops; 4823 nvlist_t *inheritprops; 4824 nvpair_t *nvp; 4825 4826 if (origprops == NULL) { 4827 /* We failed to stash the original properties. */ 4828 *errflags |= ZPROP_ERR_NORESTORE; 4829 goto out; 4830 } 4831 4832 /* Restore original props */ 4833 setprops = fnvlist_alloc(); 4834 inheritprops = fnvlist_alloc(); 4835 nvp = NULL; 4836 while ((nvp = nvlist_next_nvpair(localprops, nvp)) != NULL) { 4837 const char *name = nvpair_name(nvp); 4838 const char *source; 4839 nvlist_t *attrs; 4840 4841 if (!nvlist_exists(origprops, name)) { 4842 /* 4843 * Property was not present or was explicitly 4844 * inherited before the receive, restore this. 4845 */ 4846 fnvlist_add_boolean(inheritprops, name); 4847 continue; 4848 } 4849 attrs = fnvlist_lookup_nvlist(origprops, name); 4850 source = fnvlist_lookup_string(attrs, ZPROP_SOURCE); 4851 4852 /* Skip received properties */ 4853 if (strcmp(source, ZPROP_SOURCE_VAL_RECVD) == 0) 4854 continue; 4855 4856 if (strcmp(source, tofs) == 0) { 4857 /* Property was locally set */ 4858 fnvlist_add_nvlist(setprops, name, attrs); 4859 } else { 4860 /* Property was implicitly inherited */ 4861 fnvlist_add_boolean(inheritprops, name); 4862 } 4863 } 4864 4865 if (zfs_set_prop_nvlist(tofs, ZPROP_SRC_LOCAL, setprops, 4866 NULL) != 0) 4867 *errflags |= ZPROP_ERR_NORESTORE; 4868 if (zfs_set_prop_nvlist(tofs, ZPROP_SRC_INHERITED, inheritprops, 4869 NULL) != 0) 4870 *errflags |= ZPROP_ERR_NORESTORE; 4871 4872 nvlist_free(setprops); 4873 nvlist_free(inheritprops); 4874 } 4875 out: 4876 releasef(input_fd); 4877 nvlist_free(origrecvd); 4878 nvlist_free(origprops); 4879 4880 if (error == 0) 4881 error = props_error; 4882 4883 return (error); 4884 } 4885 4886 /* 4887 * inputs: 4888 * zc_name name of containing filesystem 4889 * zc_nvlist_src{_size} nvlist of received properties to apply 4890 * zc_nvlist_conf{_size} nvlist of local properties to apply 4891 * zc_history_offset{_len} nvlist of hidden args { "wkeydata" -> value } 4892 * zc_value name of snapshot to create 4893 * zc_string name of clone origin (if DRR_FLAG_CLONE) 4894 * zc_cookie file descriptor to recv from 4895 * zc_begin_record the BEGIN record of the stream (not byteswapped) 4896 * zc_guid force flag 4897 * zc_cleanup_fd cleanup-on-exit file descriptor 4898 * zc_action_handle handle for this guid/ds mapping (or zero on first call) 4899 * zc_resumable if data is incomplete assume sender will resume 4900 * 4901 * outputs: 4902 * zc_cookie number of bytes read 4903 * zc_nvlist_dst{_size} error for each unapplied received property 4904 * zc_obj zprop_errflags_t 4905 * zc_action_handle handle for this guid/ds mapping 4906 */ 4907 static int 4908 zfs_ioc_recv(zfs_cmd_t *zc) 4909 { 4910 dmu_replay_record_t begin_record; 4911 nvlist_t *errors = NULL; 4912 nvlist_t *recvdprops = NULL; 4913 nvlist_t *localprops = NULL; 4914 nvlist_t *hidden_args = NULL; 4915 char *origin = NULL; 4916 char *tosnap; 4917 char tofs[ZFS_MAX_DATASET_NAME_LEN]; 4918 int error = 0; 4919 4920 if (dataset_namecheck(zc->zc_value, NULL, NULL) != 0 || 4921 strchr(zc->zc_value, '@') == NULL || 4922 strchr(zc->zc_value, '%')) 4923 return (SET_ERROR(EINVAL)); 4924 4925 (void) strlcpy(tofs, zc->zc_value, sizeof (tofs)); 4926 tosnap = strchr(tofs, '@'); 4927 *tosnap++ = '\0'; 4928 4929 if (zc->zc_nvlist_src != 0 && 4930 (error = get_nvlist(zc->zc_nvlist_src, zc->zc_nvlist_src_size, 4931 zc->zc_iflags, &recvdprops)) != 0) 4932 return (error); 4933 4934 if (zc->zc_nvlist_conf != 0 && 4935 (error = get_nvlist(zc->zc_nvlist_conf, zc->zc_nvlist_conf_size, 4936 zc->zc_iflags, &localprops)) != 0) 4937 return (error); 4938 4939 if (zc->zc_history_offset != 0 && 4940 (error = get_nvlist(zc->zc_history_offset, zc->zc_history_len, 4941 zc->zc_iflags, &hidden_args)) != 0) 4942 return (error); 4943 4944 if (zc->zc_string[0]) 4945 origin = zc->zc_string; 4946 4947 begin_record.drr_type = DRR_BEGIN; 4948 begin_record.drr_payloadlen = zc->zc_begin_record.drr_payloadlen; 4949 begin_record.drr_u.drr_begin = zc->zc_begin_record.drr_u.drr_begin; 4950 4951 error = zfs_ioc_recv_impl(tofs, tosnap, origin, recvdprops, localprops, 4952 hidden_args, zc->zc_guid, zc->zc_resumable, zc->zc_cookie, 4953 &begin_record, zc->zc_cleanup_fd, &zc->zc_cookie, &zc->zc_obj, 4954 &zc->zc_action_handle, &errors); 4955 nvlist_free(recvdprops); 4956 nvlist_free(localprops); 4957 4958 /* 4959 * Now that all props, initial and delayed, are set, report the prop 4960 * errors to the caller. 4961 */ 4962 if (zc->zc_nvlist_dst_size != 0 && errors != NULL && 4963 (nvlist_smush(errors, zc->zc_nvlist_dst_size) != 0 || 4964 put_nvlist(zc, errors) != 0)) { 4965 /* 4966 * Caller made zc->zc_nvlist_dst less than the minimum expected 4967 * size or supplied an invalid address. 4968 */ 4969 error = SET_ERROR(EINVAL); 4970 } 4971 4972 nvlist_free(errors); 4973 4974 return (error); 4975 } 4976 4977 /* 4978 * inputs: 4979 * zc_name name of snapshot to send 4980 * zc_cookie file descriptor to send stream to 4981 * zc_obj fromorigin flag (mutually exclusive with zc_fromobj) 4982 * zc_sendobj objsetid of snapshot to send 4983 * zc_fromobj objsetid of incremental fromsnap (may be zero) 4984 * zc_guid if set, estimate size of stream only. zc_cookie is ignored. 4985 * output size in zc_objset_type. 4986 * zc_flags lzc_send_flags 4987 * 4988 * outputs: 4989 * zc_objset_type estimated size, if zc_guid is set 4990 */ 4991 static int 4992 zfs_ioc_send(zfs_cmd_t *zc) 4993 { 4994 int error; 4995 offset_t off; 4996 boolean_t estimate = (zc->zc_guid != 0); 4997 boolean_t embedok = (zc->zc_flags & 0x1); 4998 boolean_t large_block_ok = (zc->zc_flags & 0x2); 4999 boolean_t compressok = (zc->zc_flags & 0x4); 5000 boolean_t rawok = (zc->zc_flags & 0x8); 5001 5002 if (zc->zc_obj != 0) { 5003 dsl_pool_t *dp; 5004 dsl_dataset_t *tosnap; 5005 5006 error = dsl_pool_hold(zc->zc_name, FTAG, &dp); 5007 if (error != 0) 5008 return (error); 5009 5010 error = dsl_dataset_hold_obj(dp, zc->zc_sendobj, FTAG, &tosnap); 5011 if (error != 0) { 5012 dsl_pool_rele(dp, FTAG); 5013 return (error); 5014 } 5015 5016 if (dsl_dir_is_clone(tosnap->ds_dir)) 5017 zc->zc_fromobj = 5018 dsl_dir_phys(tosnap->ds_dir)->dd_origin_obj; 5019 dsl_dataset_rele(tosnap, FTAG); 5020 dsl_pool_rele(dp, FTAG); 5021 } 5022 5023 if (estimate) { 5024 dsl_pool_t *dp; 5025 dsl_dataset_t *tosnap; 5026 dsl_dataset_t *fromsnap = NULL; 5027 5028 error = dsl_pool_hold(zc->zc_name, FTAG, &dp); 5029 if (error != 0) 5030 return (error); 5031 5032 error = dsl_dataset_hold_obj(dp, zc->zc_sendobj, 5033 FTAG, &tosnap); 5034 if (error != 0) { 5035 dsl_pool_rele(dp, FTAG); 5036 return (error); 5037 } 5038 5039 if (zc->zc_fromobj != 0) { 5040 error = dsl_dataset_hold_obj(dp, zc->zc_fromobj, 5041 FTAG, &fromsnap); 5042 if (error != 0) { 5043 dsl_dataset_rele(tosnap, FTAG); 5044 dsl_pool_rele(dp, FTAG); 5045 return (error); 5046 } 5047 } 5048 5049 error = dmu_send_estimate(tosnap, fromsnap, compressok || rawok, 5050 &zc->zc_objset_type); 5051 5052 if (fromsnap != NULL) 5053 dsl_dataset_rele(fromsnap, FTAG); 5054 dsl_dataset_rele(tosnap, FTAG); 5055 dsl_pool_rele(dp, FTAG); 5056 } else { 5057 file_t *fp = getf(zc->zc_cookie); 5058 if (fp == NULL) 5059 return (SET_ERROR(EBADF)); 5060 5061 off = fp->f_offset; 5062 error = dmu_send_obj(zc->zc_name, zc->zc_sendobj, 5063 zc->zc_fromobj, embedok, large_block_ok, compressok, rawok, 5064 zc->zc_cookie, fp->f_vnode, &off); 5065 5066 if (VOP_SEEK(fp->f_vnode, fp->f_offset, &off, NULL) == 0) 5067 fp->f_offset = off; 5068 releasef(zc->zc_cookie); 5069 } 5070 return (error); 5071 } 5072 5073 /* 5074 * inputs: 5075 * zc_name name of snapshot on which to report progress 5076 * zc_cookie file descriptor of send stream 5077 * 5078 * outputs: 5079 * zc_cookie number of bytes written in send stream thus far 5080 */ 5081 static int 5082 zfs_ioc_send_progress(zfs_cmd_t *zc) 5083 { 5084 dsl_pool_t *dp; 5085 dsl_dataset_t *ds; 5086 dmu_sendarg_t *dsp = NULL; 5087 int error; 5088 5089 error = dsl_pool_hold(zc->zc_name, FTAG, &dp); 5090 if (error != 0) 5091 return (error); 5092 5093 error = dsl_dataset_hold(dp, zc->zc_name, FTAG, &ds); 5094 if (error != 0) { 5095 dsl_pool_rele(dp, FTAG); 5096 return (error); 5097 } 5098 5099 mutex_enter(&ds->ds_sendstream_lock); 5100 5101 /* 5102 * Iterate over all the send streams currently active on this dataset. 5103 * If there's one which matches the specified file descriptor _and_ the 5104 * stream was started by the current process, return the progress of 5105 * that stream. 5106 */ 5107 for (dsp = list_head(&ds->ds_sendstreams); dsp != NULL; 5108 dsp = list_next(&ds->ds_sendstreams, dsp)) { 5109 if (dsp->dsa_outfd == zc->zc_cookie && 5110 dsp->dsa_proc == curproc) 5111 break; 5112 } 5113 5114 if (dsp != NULL) 5115 zc->zc_cookie = *(dsp->dsa_off); 5116 else 5117 error = SET_ERROR(ENOENT); 5118 5119 mutex_exit(&ds->ds_sendstream_lock); 5120 dsl_dataset_rele(ds, FTAG); 5121 dsl_pool_rele(dp, FTAG); 5122 return (error); 5123 } 5124 5125 static int 5126 zfs_ioc_inject_fault(zfs_cmd_t *zc) 5127 { 5128 int id, error; 5129 5130 error = zio_inject_fault(zc->zc_name, (int)zc->zc_guid, &id, 5131 &zc->zc_inject_record); 5132 5133 if (error == 0) 5134 zc->zc_guid = (uint64_t)id; 5135 5136 return (error); 5137 } 5138 5139 static int 5140 zfs_ioc_clear_fault(zfs_cmd_t *zc) 5141 { 5142 return (zio_clear_fault((int)zc->zc_guid)); 5143 } 5144 5145 static int 5146 zfs_ioc_inject_list_next(zfs_cmd_t *zc) 5147 { 5148 int id = (int)zc->zc_guid; 5149 int error; 5150 5151 error = zio_inject_list_next(&id, zc->zc_name, sizeof (zc->zc_name), 5152 &zc->zc_inject_record); 5153 5154 zc->zc_guid = id; 5155 5156 return (error); 5157 } 5158 5159 static int 5160 zfs_ioc_error_log(zfs_cmd_t *zc) 5161 { 5162 spa_t *spa; 5163 int error; 5164 size_t count = (size_t)zc->zc_nvlist_dst_size; 5165 5166 if ((error = spa_open(zc->zc_name, &spa, FTAG)) != 0) 5167 return (error); 5168 5169 error = spa_get_errlog(spa, (void *)(uintptr_t)zc->zc_nvlist_dst, 5170 &count); 5171 if (error == 0) 5172 zc->zc_nvlist_dst_size = count; 5173 else 5174 zc->zc_nvlist_dst_size = spa_get_errlog_size(spa); 5175 5176 spa_close(spa, FTAG); 5177 5178 return (error); 5179 } 5180 5181 static int 5182 zfs_ioc_clear(zfs_cmd_t *zc) 5183 { 5184 spa_t *spa; 5185 vdev_t *vd; 5186 int error; 5187 5188 /* 5189 * On zpool clear we also fix up missing slogs 5190 */ 5191 mutex_enter(&spa_namespace_lock); 5192 spa = spa_lookup(zc->zc_name); 5193 if (spa == NULL) { 5194 mutex_exit(&spa_namespace_lock); 5195 return (SET_ERROR(EIO)); 5196 } 5197 if (spa_get_log_state(spa) == SPA_LOG_MISSING) { 5198 /* we need to let spa_open/spa_load clear the chains */ 5199 spa_set_log_state(spa, SPA_LOG_CLEAR); 5200 } 5201 spa->spa_last_open_failed = 0; 5202 mutex_exit(&spa_namespace_lock); 5203 5204 if (zc->zc_cookie & ZPOOL_NO_REWIND) { 5205 error = spa_open(zc->zc_name, &spa, FTAG); 5206 } else { 5207 nvlist_t *policy; 5208 nvlist_t *config = NULL; 5209 5210 if (zc->zc_nvlist_src == 0) 5211 return (SET_ERROR(EINVAL)); 5212 5213 if ((error = get_nvlist(zc->zc_nvlist_src, 5214 zc->zc_nvlist_src_size, zc->zc_iflags, &policy)) == 0) { 5215 error = spa_open_rewind(zc->zc_name, &spa, FTAG, 5216 policy, &config); 5217 if (config != NULL) { 5218 int err; 5219 5220 if ((err = put_nvlist(zc, config)) != 0) 5221 error = err; 5222 nvlist_free(config); 5223 } 5224 nvlist_free(policy); 5225 } 5226 } 5227 5228 if (error != 0) 5229 return (error); 5230 5231 /* 5232 * If multihost is enabled, resuming I/O is unsafe as another 5233 * host may have imported the pool. 5234 */ 5235 if (spa_multihost(spa) && spa_suspended(spa)) 5236 return (SET_ERROR(EINVAL)); 5237 5238 spa_vdev_state_enter(spa, SCL_NONE); 5239 5240 if (zc->zc_guid == 0) { 5241 vd = NULL; 5242 } else { 5243 vd = spa_lookup_by_guid(spa, zc->zc_guid, B_TRUE); 5244 if (vd == NULL) { 5245 (void) spa_vdev_state_exit(spa, NULL, ENODEV); 5246 spa_close(spa, FTAG); 5247 return (SET_ERROR(ENODEV)); 5248 } 5249 } 5250 5251 vdev_clear(spa, vd); 5252 5253 (void) spa_vdev_state_exit(spa, NULL, 0); 5254 5255 /* 5256 * Resume any suspended I/Os. 5257 */ 5258 if (zio_resume(spa) != 0) 5259 error = SET_ERROR(EIO); 5260 5261 spa_close(spa, FTAG); 5262 5263 return (error); 5264 } 5265 5266 static int 5267 zfs_ioc_pool_reopen(zfs_cmd_t *zc) 5268 { 5269 spa_t *spa; 5270 int error; 5271 5272 error = spa_open(zc->zc_name, &spa, FTAG); 5273 if (error != 0) 5274 return (error); 5275 5276 spa_vdev_state_enter(spa, SCL_NONE); 5277 5278 /* 5279 * If a resilver is already in progress then set the 5280 * spa_scrub_reopen flag to B_TRUE so that we don't restart 5281 * the scan as a side effect of the reopen. Otherwise, let 5282 * vdev_open() decided if a resilver is required. 5283 */ 5284 spa->spa_scrub_reopen = dsl_scan_resilvering(spa->spa_dsl_pool); 5285 vdev_reopen(spa->spa_root_vdev); 5286 spa->spa_scrub_reopen = B_FALSE; 5287 5288 (void) spa_vdev_state_exit(spa, NULL, 0); 5289 spa_close(spa, FTAG); 5290 return (0); 5291 } 5292 /* 5293 * inputs: 5294 * zc_name name of filesystem 5295 * 5296 * outputs: 5297 * zc_string name of conflicting snapshot, if there is one 5298 */ 5299 static int 5300 zfs_ioc_promote(zfs_cmd_t *zc) 5301 { 5302 dsl_pool_t *dp; 5303 dsl_dataset_t *ds, *ods; 5304 char origin[ZFS_MAX_DATASET_NAME_LEN]; 5305 char *cp; 5306 int error; 5307 5308 zc->zc_name[sizeof (zc->zc_name) - 1] = '\0'; 5309 if (dataset_namecheck(zc->zc_name, NULL, NULL) != 0 || 5310 strchr(zc->zc_name, '%')) 5311 return (SET_ERROR(EINVAL)); 5312 5313 error = dsl_pool_hold(zc->zc_name, FTAG, &dp); 5314 if (error != 0) 5315 return (error); 5316 5317 error = dsl_dataset_hold(dp, zc->zc_name, FTAG, &ds); 5318 if (error != 0) { 5319 dsl_pool_rele(dp, FTAG); 5320 return (error); 5321 } 5322 5323 if (!dsl_dir_is_clone(ds->ds_dir)) { 5324 dsl_dataset_rele(ds, FTAG); 5325 dsl_pool_rele(dp, FTAG); 5326 return (SET_ERROR(EINVAL)); 5327 } 5328 5329 error = dsl_dataset_hold_obj(dp, 5330 dsl_dir_phys(ds->ds_dir)->dd_origin_obj, FTAG, &ods); 5331 if (error != 0) { 5332 dsl_dataset_rele(ds, FTAG); 5333 dsl_pool_rele(dp, FTAG); 5334 return (error); 5335 } 5336 5337 dsl_dataset_name(ods, origin); 5338 dsl_dataset_rele(ods, FTAG); 5339 dsl_dataset_rele(ds, FTAG); 5340 dsl_pool_rele(dp, FTAG); 5341 5342 /* 5343 * We don't need to unmount *all* the origin fs's snapshots, but 5344 * it's easier. 5345 */ 5346 cp = strchr(origin, '@'); 5347 if (cp) 5348 *cp = '\0'; 5349 (void) dmu_objset_find(origin, 5350 zfs_unmount_snap_cb, NULL, DS_FIND_SNAPSHOTS); 5351 return (dsl_dataset_promote(zc->zc_name, zc->zc_string)); 5352 } 5353 5354 /* 5355 * Retrieve a single {user|group|project}{used|quota}@... property. 5356 * 5357 * inputs: 5358 * zc_name name of filesystem 5359 * zc_objset_type zfs_userquota_prop_t 5360 * zc_value domain name (eg. "S-1-234-567-89") 5361 * zc_guid RID/UID/GID 5362 * 5363 * outputs: 5364 * zc_cookie property value 5365 */ 5366 static int 5367 zfs_ioc_userspace_one(zfs_cmd_t *zc) 5368 { 5369 zfsvfs_t *zfsvfs; 5370 int error; 5371 5372 if (zc->zc_objset_type >= ZFS_NUM_USERQUOTA_PROPS) 5373 return (SET_ERROR(EINVAL)); 5374 5375 error = zfsvfs_hold(zc->zc_name, FTAG, &zfsvfs, B_FALSE); 5376 if (error != 0) 5377 return (error); 5378 5379 error = zfs_userspace_one(zfsvfs, 5380 zc->zc_objset_type, zc->zc_value, zc->zc_guid, &zc->zc_cookie); 5381 zfsvfs_rele(zfsvfs, FTAG); 5382 5383 return (error); 5384 } 5385 5386 /* 5387 * inputs: 5388 * zc_name name of filesystem 5389 * zc_cookie zap cursor 5390 * zc_objset_type zfs_userquota_prop_t 5391 * zc_nvlist_dst[_size] buffer to fill (not really an nvlist) 5392 * 5393 * outputs: 5394 * zc_nvlist_dst[_size] data buffer (array of zfs_useracct_t) 5395 * zc_cookie zap cursor 5396 */ 5397 static int 5398 zfs_ioc_userspace_many(zfs_cmd_t *zc) 5399 { 5400 zfsvfs_t *zfsvfs; 5401 int bufsize = zc->zc_nvlist_dst_size; 5402 5403 if (bufsize <= 0) 5404 return (SET_ERROR(ENOMEM)); 5405 5406 int error = zfsvfs_hold(zc->zc_name, FTAG, &zfsvfs, B_FALSE); 5407 if (error != 0) 5408 return (error); 5409 5410 void *buf = kmem_alloc(bufsize, KM_SLEEP); 5411 5412 error = zfs_userspace_many(zfsvfs, zc->zc_objset_type, &zc->zc_cookie, 5413 buf, &zc->zc_nvlist_dst_size); 5414 5415 if (error == 0) { 5416 error = xcopyout(buf, 5417 (void *)(uintptr_t)zc->zc_nvlist_dst, 5418 zc->zc_nvlist_dst_size); 5419 } 5420 kmem_free(buf, bufsize); 5421 zfsvfs_rele(zfsvfs, FTAG); 5422 5423 return (error); 5424 } 5425 5426 /* 5427 * inputs: 5428 * zc_name name of filesystem 5429 * 5430 * outputs: 5431 * none 5432 */ 5433 static int 5434 zfs_ioc_userspace_upgrade(zfs_cmd_t *zc) 5435 { 5436 objset_t *os; 5437 int error = 0; 5438 zfsvfs_t *zfsvfs; 5439 5440 if (getzfsvfs(zc->zc_name, &zfsvfs) == 0) { 5441 if (!dmu_objset_userused_enabled(zfsvfs->z_os)) { 5442 /* 5443 * If userused is not enabled, it may be because the 5444 * objset needs to be closed & reopened (to grow the 5445 * objset_phys_t). Suspend/resume the fs will do that. 5446 */ 5447 dsl_dataset_t *ds, *newds; 5448 5449 ds = dmu_objset_ds(zfsvfs->z_os); 5450 error = zfs_suspend_fs(zfsvfs); 5451 if (error == 0) { 5452 dmu_objset_refresh_ownership(ds, &newds, 5453 B_TRUE, zfsvfs); 5454 error = zfs_resume_fs(zfsvfs, newds); 5455 } 5456 } 5457 if (error == 0) 5458 error = dmu_objset_userspace_upgrade(zfsvfs->z_os); 5459 VFS_RELE(zfsvfs->z_vfs); 5460 } else { 5461 /* XXX kind of reading contents without owning */ 5462 error = dmu_objset_hold_flags(zc->zc_name, B_TRUE, FTAG, &os); 5463 if (error != 0) 5464 return (error); 5465 5466 error = dmu_objset_userspace_upgrade(os); 5467 dmu_objset_rele_flags(os, B_TRUE, FTAG); 5468 } 5469 5470 return (error); 5471 } 5472 5473 /* 5474 * inputs: 5475 * zc_name name of filesystem 5476 * 5477 * outputs: 5478 * none 5479 */ 5480 static int 5481 zfs_ioc_id_quota_upgrade(zfs_cmd_t *zc) 5482 { 5483 objset_t *os; 5484 int error; 5485 5486 error = dmu_objset_hold(zc->zc_name, FTAG, &os); 5487 if (error != 0) 5488 return (error); 5489 5490 dsl_dataset_long_hold(dmu_objset_ds(os), FTAG); 5491 dsl_pool_rele(dmu_objset_pool(os), FTAG); 5492 5493 if (dmu_objset_userobjspace_upgradable(os) || 5494 dmu_objset_projectquota_upgradable(os)) { 5495 mutex_enter(&os->os_upgrade_lock); 5496 if (os->os_upgrade_id == 0) { 5497 /* clear potential error code and retry */ 5498 os->os_upgrade_status = 0; 5499 mutex_exit(&os->os_upgrade_lock); 5500 5501 dmu_objset_id_quota_upgrade(os); 5502 } else { 5503 mutex_exit(&os->os_upgrade_lock); 5504 } 5505 5506 taskq_wait_id(os->os_spa->spa_upgrade_taskq, os->os_upgrade_id); 5507 error = os->os_upgrade_status; 5508 } 5509 5510 dsl_dataset_long_rele(dmu_objset_ds(os), FTAG); 5511 dsl_dataset_rele(dmu_objset_ds(os), FTAG); 5512 5513 return (error); 5514 } 5515 5516 /* 5517 * We don't want to have a hard dependency 5518 * against some special symbols in sharefs 5519 * nfs, and smbsrv. Determine them if needed when 5520 * the first file system is shared. 5521 * Neither sharefs, nfs or smbsrv are unloadable modules. 5522 */ 5523 int (*znfsexport_fs)(void *arg); 5524 int (*zshare_fs)(enum sharefs_sys_op, share_t *, uint32_t); 5525 int (*zsmbexport_fs)(void *arg, boolean_t add_share); 5526 5527 int zfs_nfsshare_inited; 5528 int zfs_smbshare_inited; 5529 5530 ddi_modhandle_t nfs_mod; 5531 ddi_modhandle_t sharefs_mod; 5532 ddi_modhandle_t smbsrv_mod; 5533 kmutex_t zfs_share_lock; 5534 5535 static int 5536 zfs_init_sharefs() 5537 { 5538 int error; 5539 5540 ASSERT(MUTEX_HELD(&zfs_share_lock)); 5541 /* Both NFS and SMB shares also require sharetab support. */ 5542 if (sharefs_mod == NULL && ((sharefs_mod = 5543 ddi_modopen("fs/sharefs", 5544 KRTLD_MODE_FIRST, &error)) == NULL)) { 5545 return (SET_ERROR(ENOSYS)); 5546 } 5547 if (zshare_fs == NULL && ((zshare_fs = 5548 (int (*)(enum sharefs_sys_op, share_t *, uint32_t)) 5549 ddi_modsym(sharefs_mod, "sharefs_impl", &error)) == NULL)) { 5550 return (SET_ERROR(ENOSYS)); 5551 } 5552 return (0); 5553 } 5554 5555 static int 5556 zfs_ioc_share(zfs_cmd_t *zc) 5557 { 5558 int error; 5559 int opcode; 5560 5561 switch (zc->zc_share.z_sharetype) { 5562 case ZFS_SHARE_NFS: 5563 case ZFS_UNSHARE_NFS: 5564 if (zfs_nfsshare_inited == 0) { 5565 mutex_enter(&zfs_share_lock); 5566 if (nfs_mod == NULL && ((nfs_mod = ddi_modopen("fs/nfs", 5567 KRTLD_MODE_FIRST, &error)) == NULL)) { 5568 mutex_exit(&zfs_share_lock); 5569 return (SET_ERROR(ENOSYS)); 5570 } 5571 if (znfsexport_fs == NULL && 5572 ((znfsexport_fs = (int (*)(void *)) 5573 ddi_modsym(nfs_mod, 5574 "nfs_export", &error)) == NULL)) { 5575 mutex_exit(&zfs_share_lock); 5576 return (SET_ERROR(ENOSYS)); 5577 } 5578 error = zfs_init_sharefs(); 5579 if (error != 0) { 5580 mutex_exit(&zfs_share_lock); 5581 return (SET_ERROR(ENOSYS)); 5582 } 5583 zfs_nfsshare_inited = 1; 5584 mutex_exit(&zfs_share_lock); 5585 } 5586 break; 5587 case ZFS_SHARE_SMB: 5588 case ZFS_UNSHARE_SMB: 5589 if (zfs_smbshare_inited == 0) { 5590 mutex_enter(&zfs_share_lock); 5591 if (smbsrv_mod == NULL && ((smbsrv_mod = 5592 ddi_modopen("drv/smbsrv", 5593 KRTLD_MODE_FIRST, &error)) == NULL)) { 5594 mutex_exit(&zfs_share_lock); 5595 return (SET_ERROR(ENOSYS)); 5596 } 5597 if (zsmbexport_fs == NULL && ((zsmbexport_fs = 5598 (int (*)(void *, boolean_t))ddi_modsym(smbsrv_mod, 5599 "smb_server_share", &error)) == NULL)) { 5600 mutex_exit(&zfs_share_lock); 5601 return (SET_ERROR(ENOSYS)); 5602 } 5603 error = zfs_init_sharefs(); 5604 if (error != 0) { 5605 mutex_exit(&zfs_share_lock); 5606 return (SET_ERROR(ENOSYS)); 5607 } 5608 zfs_smbshare_inited = 1; 5609 mutex_exit(&zfs_share_lock); 5610 } 5611 break; 5612 default: 5613 return (SET_ERROR(EINVAL)); 5614 } 5615 5616 switch (zc->zc_share.z_sharetype) { 5617 case ZFS_SHARE_NFS: 5618 case ZFS_UNSHARE_NFS: 5619 if (error = 5620 znfsexport_fs((void *) 5621 (uintptr_t)zc->zc_share.z_exportdata)) 5622 return (error); 5623 break; 5624 case ZFS_SHARE_SMB: 5625 case ZFS_UNSHARE_SMB: 5626 if (error = zsmbexport_fs((void *) 5627 (uintptr_t)zc->zc_share.z_exportdata, 5628 zc->zc_share.z_sharetype == ZFS_SHARE_SMB ? 5629 B_TRUE: B_FALSE)) { 5630 return (error); 5631 } 5632 break; 5633 } 5634 5635 opcode = (zc->zc_share.z_sharetype == ZFS_SHARE_NFS || 5636 zc->zc_share.z_sharetype == ZFS_SHARE_SMB) ? 5637 SHAREFS_ADD : SHAREFS_REMOVE; 5638 5639 /* 5640 * Add or remove share from sharetab 5641 */ 5642 error = zshare_fs(opcode, 5643 (void *)(uintptr_t)zc->zc_share.z_sharedata, 5644 zc->zc_share.z_sharemax); 5645 5646 return (error); 5647 5648 } 5649 5650 ace_t full_access[] = { 5651 {(uid_t)-1, ACE_ALL_PERMS, ACE_EVERYONE, 0} 5652 }; 5653 5654 /* 5655 * inputs: 5656 * zc_name name of containing filesystem 5657 * zc_obj object # beyond which we want next in-use object # 5658 * 5659 * outputs: 5660 * zc_obj next in-use object # 5661 */ 5662 static int 5663 zfs_ioc_next_obj(zfs_cmd_t *zc) 5664 { 5665 objset_t *os = NULL; 5666 int error; 5667 5668 error = dmu_objset_hold(zc->zc_name, FTAG, &os); 5669 if (error != 0) 5670 return (error); 5671 5672 error = dmu_object_next(os, &zc->zc_obj, B_FALSE, 5673 dsl_dataset_phys(os->os_dsl_dataset)->ds_prev_snap_txg); 5674 5675 dmu_objset_rele(os, FTAG); 5676 return (error); 5677 } 5678 5679 /* 5680 * inputs: 5681 * zc_name name of filesystem 5682 * zc_value prefix name for snapshot 5683 * zc_cleanup_fd cleanup-on-exit file descriptor for calling process 5684 * 5685 * outputs: 5686 * zc_value short name of new snapshot 5687 */ 5688 static int 5689 zfs_ioc_tmp_snapshot(zfs_cmd_t *zc) 5690 { 5691 char *snap_name; 5692 char *hold_name; 5693 int error; 5694 minor_t minor; 5695 5696 error = zfs_onexit_fd_hold(zc->zc_cleanup_fd, &minor); 5697 if (error != 0) 5698 return (error); 5699 5700 snap_name = kmem_asprintf("%s-%016llx", zc->zc_value, 5701 (u_longlong_t)ddi_get_lbolt64()); 5702 hold_name = kmem_asprintf("%%%s", zc->zc_value); 5703 5704 error = dsl_dataset_snapshot_tmp(zc->zc_name, snap_name, minor, 5705 hold_name); 5706 if (error == 0) 5707 (void) strcpy(zc->zc_value, snap_name); 5708 strfree(snap_name); 5709 strfree(hold_name); 5710 zfs_onexit_fd_rele(zc->zc_cleanup_fd); 5711 return (error); 5712 } 5713 5714 /* 5715 * inputs: 5716 * zc_name name of "to" snapshot 5717 * zc_value name of "from" snapshot 5718 * zc_cookie file descriptor to write diff data on 5719 * 5720 * outputs: 5721 * dmu_diff_record_t's to the file descriptor 5722 */ 5723 static int 5724 zfs_ioc_diff(zfs_cmd_t *zc) 5725 { 5726 file_t *fp; 5727 offset_t off; 5728 int error; 5729 5730 fp = getf(zc->zc_cookie); 5731 if (fp == NULL) 5732 return (SET_ERROR(EBADF)); 5733 5734 off = fp->f_offset; 5735 5736 error = dmu_diff(zc->zc_name, zc->zc_value, fp->f_vnode, &off); 5737 5738 if (VOP_SEEK(fp->f_vnode, fp->f_offset, &off, NULL) == 0) 5739 fp->f_offset = off; 5740 releasef(zc->zc_cookie); 5741 5742 return (error); 5743 } 5744 5745 /* 5746 * Remove all ACL files in shares dir 5747 */ 5748 static int 5749 zfs_smb_acl_purge(znode_t *dzp) 5750 { 5751 zap_cursor_t zc; 5752 zap_attribute_t zap; 5753 zfsvfs_t *zfsvfs = dzp->z_zfsvfs; 5754 int error; 5755 5756 for (zap_cursor_init(&zc, zfsvfs->z_os, dzp->z_id); 5757 (error = zap_cursor_retrieve(&zc, &zap)) == 0; 5758 zap_cursor_advance(&zc)) { 5759 if ((error = VOP_REMOVE(ZTOV(dzp), zap.za_name, kcred, 5760 NULL, 0)) != 0) 5761 break; 5762 } 5763 zap_cursor_fini(&zc); 5764 return (error); 5765 } 5766 5767 static int 5768 zfs_ioc_smb_acl(zfs_cmd_t *zc) 5769 { 5770 vnode_t *vp; 5771 znode_t *dzp; 5772 vnode_t *resourcevp = NULL; 5773 znode_t *sharedir; 5774 zfsvfs_t *zfsvfs; 5775 nvlist_t *nvlist; 5776 char *src, *target; 5777 vattr_t vattr; 5778 vsecattr_t vsec; 5779 int error = 0; 5780 5781 if ((error = lookupname(zc->zc_value, UIO_SYSSPACE, 5782 NO_FOLLOW, NULL, &vp)) != 0) 5783 return (error); 5784 5785 /* Now make sure mntpnt and dataset are ZFS */ 5786 5787 if (vp->v_vfsp->vfs_fstype != zfsfstype || 5788 (strcmp((char *)refstr_value(vp->v_vfsp->vfs_resource), 5789 zc->zc_name) != 0)) { 5790 VN_RELE(vp); 5791 return (SET_ERROR(EINVAL)); 5792 } 5793 5794 dzp = VTOZ(vp); 5795 zfsvfs = dzp->z_zfsvfs; 5796 ZFS_ENTER(zfsvfs); 5797 5798 /* 5799 * Create share dir if its missing. 5800 */ 5801 mutex_enter(&zfsvfs->z_lock); 5802 if (zfsvfs->z_shares_dir == 0) { 5803 dmu_tx_t *tx; 5804 5805 tx = dmu_tx_create(zfsvfs->z_os); 5806 dmu_tx_hold_zap(tx, MASTER_NODE_OBJ, TRUE, 5807 ZFS_SHARES_DIR); 5808 dmu_tx_hold_zap(tx, DMU_NEW_OBJECT, FALSE, NULL); 5809 error = dmu_tx_assign(tx, TXG_WAIT); 5810 if (error != 0) { 5811 dmu_tx_abort(tx); 5812 } else { 5813 error = zfs_create_share_dir(zfsvfs, tx); 5814 dmu_tx_commit(tx); 5815 } 5816 if (error != 0) { 5817 mutex_exit(&zfsvfs->z_lock); 5818 VN_RELE(vp); 5819 ZFS_EXIT(zfsvfs); 5820 return (error); 5821 } 5822 } 5823 mutex_exit(&zfsvfs->z_lock); 5824 5825 ASSERT(zfsvfs->z_shares_dir); 5826 if ((error = zfs_zget(zfsvfs, zfsvfs->z_shares_dir, &sharedir)) != 0) { 5827 VN_RELE(vp); 5828 ZFS_EXIT(zfsvfs); 5829 return (error); 5830 } 5831 5832 switch (zc->zc_cookie) { 5833 case ZFS_SMB_ACL_ADD: 5834 vattr.va_mask = AT_MODE|AT_UID|AT_GID|AT_TYPE; 5835 vattr.va_type = VREG; 5836 vattr.va_mode = S_IFREG|0777; 5837 vattr.va_uid = 0; 5838 vattr.va_gid = 0; 5839 5840 vsec.vsa_mask = VSA_ACE; 5841 vsec.vsa_aclentp = &full_access; 5842 vsec.vsa_aclentsz = sizeof (full_access); 5843 vsec.vsa_aclcnt = 1; 5844 5845 error = VOP_CREATE(ZTOV(sharedir), zc->zc_string, 5846 &vattr, EXCL, 0, &resourcevp, kcred, 0, NULL, &vsec); 5847 if (resourcevp) 5848 VN_RELE(resourcevp); 5849 break; 5850 5851 case ZFS_SMB_ACL_REMOVE: 5852 error = VOP_REMOVE(ZTOV(sharedir), zc->zc_string, kcred, 5853 NULL, 0); 5854 break; 5855 5856 case ZFS_SMB_ACL_RENAME: 5857 if ((error = get_nvlist(zc->zc_nvlist_src, 5858 zc->zc_nvlist_src_size, zc->zc_iflags, &nvlist)) != 0) { 5859 VN_RELE(vp); 5860 VN_RELE(ZTOV(sharedir)); 5861 ZFS_EXIT(zfsvfs); 5862 return (error); 5863 } 5864 if (nvlist_lookup_string(nvlist, ZFS_SMB_ACL_SRC, &src) || 5865 nvlist_lookup_string(nvlist, ZFS_SMB_ACL_TARGET, 5866 &target)) { 5867 VN_RELE(vp); 5868 VN_RELE(ZTOV(sharedir)); 5869 ZFS_EXIT(zfsvfs); 5870 nvlist_free(nvlist); 5871 return (error); 5872 } 5873 error = VOP_RENAME(ZTOV(sharedir), src, ZTOV(sharedir), target, 5874 kcred, NULL, 0); 5875 nvlist_free(nvlist); 5876 break; 5877 5878 case ZFS_SMB_ACL_PURGE: 5879 error = zfs_smb_acl_purge(sharedir); 5880 break; 5881 5882 default: 5883 error = SET_ERROR(EINVAL); 5884 break; 5885 } 5886 5887 VN_RELE(vp); 5888 VN_RELE(ZTOV(sharedir)); 5889 5890 ZFS_EXIT(zfsvfs); 5891 5892 return (error); 5893 } 5894 5895 /* 5896 * innvl: { 5897 * "holds" -> { snapname -> holdname (string), ... } 5898 * (optional) "cleanup_fd" -> fd (int32) 5899 * } 5900 * 5901 * outnvl: { 5902 * snapname -> error value (int32) 5903 * ... 5904 * } 5905 */ 5906 /* ARGSUSED */ 5907 static int 5908 zfs_ioc_hold(const char *pool, nvlist_t *args, nvlist_t *errlist) 5909 { 5910 nvpair_t *pair; 5911 nvlist_t *holds; 5912 int cleanup_fd = -1; 5913 int error; 5914 minor_t minor = 0; 5915 5916 error = nvlist_lookup_nvlist(args, "holds", &holds); 5917 if (error != 0) 5918 return (SET_ERROR(EINVAL)); 5919 5920 /* make sure the user didn't pass us any invalid (empty) tags */ 5921 for (pair = nvlist_next_nvpair(holds, NULL); pair != NULL; 5922 pair = nvlist_next_nvpair(holds, pair)) { 5923 char *htag; 5924 5925 error = nvpair_value_string(pair, &htag); 5926 if (error != 0) 5927 return (SET_ERROR(error)); 5928 5929 if (strlen(htag) == 0) 5930 return (SET_ERROR(EINVAL)); 5931 } 5932 5933 if (nvlist_lookup_int32(args, "cleanup_fd", &cleanup_fd) == 0) { 5934 error = zfs_onexit_fd_hold(cleanup_fd, &minor); 5935 if (error != 0) 5936 return (error); 5937 } 5938 5939 error = dsl_dataset_user_hold(holds, minor, errlist); 5940 if (minor != 0) 5941 zfs_onexit_fd_rele(cleanup_fd); 5942 return (error); 5943 } 5944 5945 /* 5946 * innvl is not used. 5947 * 5948 * outnvl: { 5949 * holdname -> time added (uint64 seconds since epoch) 5950 * ... 5951 * } 5952 */ 5953 /* ARGSUSED */ 5954 static int 5955 zfs_ioc_get_holds(const char *snapname, nvlist_t *args, nvlist_t *outnvl) 5956 { 5957 ASSERT3P(args, ==, NULL); 5958 return (dsl_dataset_get_holds(snapname, outnvl)); 5959 } 5960 5961 /* 5962 * innvl: { 5963 * snapname -> { holdname, ... } 5964 * ... 5965 * } 5966 * 5967 * outnvl: { 5968 * snapname -> error value (int32) 5969 * ... 5970 * } 5971 */ 5972 /* ARGSUSED */ 5973 static int 5974 zfs_ioc_release(const char *pool, nvlist_t *holds, nvlist_t *errlist) 5975 { 5976 return (dsl_dataset_user_release(holds, errlist)); 5977 } 5978 5979 /* 5980 * inputs: 5981 * zc_name name of new filesystem or snapshot 5982 * zc_value full name of old snapshot 5983 * 5984 * outputs: 5985 * zc_cookie space in bytes 5986 * zc_objset_type compressed space in bytes 5987 * zc_perm_action uncompressed space in bytes 5988 */ 5989 static int 5990 zfs_ioc_space_written(zfs_cmd_t *zc) 5991 { 5992 int error; 5993 dsl_pool_t *dp; 5994 dsl_dataset_t *new, *old; 5995 5996 error = dsl_pool_hold(zc->zc_name, FTAG, &dp); 5997 if (error != 0) 5998 return (error); 5999 error = dsl_dataset_hold(dp, zc->zc_name, FTAG, &new); 6000 if (error != 0) { 6001 dsl_pool_rele(dp, FTAG); 6002 return (error); 6003 } 6004 error = dsl_dataset_hold(dp, zc->zc_value, FTAG, &old); 6005 if (error != 0) { 6006 dsl_dataset_rele(new, FTAG); 6007 dsl_pool_rele(dp, FTAG); 6008 return (error); 6009 } 6010 6011 error = dsl_dataset_space_written(old, new, &zc->zc_cookie, 6012 &zc->zc_objset_type, &zc->zc_perm_action); 6013 dsl_dataset_rele(old, FTAG); 6014 dsl_dataset_rele(new, FTAG); 6015 dsl_pool_rele(dp, FTAG); 6016 return (error); 6017 } 6018 6019 /* 6020 * innvl: { 6021 * "firstsnap" -> snapshot name 6022 * } 6023 * 6024 * outnvl: { 6025 * "used" -> space in bytes 6026 * "compressed" -> compressed space in bytes 6027 * "uncompressed" -> uncompressed space in bytes 6028 * } 6029 */ 6030 static int 6031 zfs_ioc_space_snaps(const char *lastsnap, nvlist_t *innvl, nvlist_t *outnvl) 6032 { 6033 int error; 6034 dsl_pool_t *dp; 6035 dsl_dataset_t *new, *old; 6036 char *firstsnap; 6037 uint64_t used, comp, uncomp; 6038 6039 if (nvlist_lookup_string(innvl, "firstsnap", &firstsnap) != 0) 6040 return (SET_ERROR(EINVAL)); 6041 6042 error = dsl_pool_hold(lastsnap, FTAG, &dp); 6043 if (error != 0) 6044 return (error); 6045 6046 error = dsl_dataset_hold(dp, lastsnap, FTAG, &new); 6047 if (error == 0 && !new->ds_is_snapshot) { 6048 dsl_dataset_rele(new, FTAG); 6049 error = SET_ERROR(EINVAL); 6050 } 6051 if (error != 0) { 6052 dsl_pool_rele(dp, FTAG); 6053 return (error); 6054 } 6055 error = dsl_dataset_hold(dp, firstsnap, FTAG, &old); 6056 if (error == 0 && !old->ds_is_snapshot) { 6057 dsl_dataset_rele(old, FTAG); 6058 error = SET_ERROR(EINVAL); 6059 } 6060 if (error != 0) { 6061 dsl_dataset_rele(new, FTAG); 6062 dsl_pool_rele(dp, FTAG); 6063 return (error); 6064 } 6065 6066 error = dsl_dataset_space_wouldfree(old, new, &used, &comp, &uncomp); 6067 dsl_dataset_rele(old, FTAG); 6068 dsl_dataset_rele(new, FTAG); 6069 dsl_pool_rele(dp, FTAG); 6070 fnvlist_add_uint64(outnvl, "used", used); 6071 fnvlist_add_uint64(outnvl, "compressed", comp); 6072 fnvlist_add_uint64(outnvl, "uncompressed", uncomp); 6073 return (error); 6074 } 6075 6076 /* 6077 * innvl: { 6078 * "fd" -> file descriptor to write stream to (int32) 6079 * (optional) "fromsnap" -> full snap name to send an incremental from 6080 * (optional) "largeblockok" -> (value ignored) 6081 * indicates that blocks > 128KB are permitted 6082 * (optional) "embedok" -> (value ignored) 6083 * presence indicates DRR_WRITE_EMBEDDED records are permitted 6084 * (optional) "compressok" -> (value ignored) 6085 * presence indicates compressed DRR_WRITE records are permitted 6086 * (optional) "rawok" -> (value ignored) 6087 * presence indicates raw encrypted records should be used. 6088 * (optional) "resume_object" and "resume_offset" -> (uint64) 6089 * if present, resume send stream from specified object and offset. 6090 * } 6091 * 6092 * outnvl is unused 6093 */ 6094 /* ARGSUSED */ 6095 static int 6096 zfs_ioc_send_new(const char *snapname, nvlist_t *innvl, nvlist_t *outnvl) 6097 { 6098 int error; 6099 offset_t off; 6100 char *fromname = NULL; 6101 int fd; 6102 boolean_t largeblockok; 6103 boolean_t embedok; 6104 boolean_t compressok; 6105 boolean_t rawok; 6106 uint64_t resumeobj = 0; 6107 uint64_t resumeoff = 0; 6108 6109 error = nvlist_lookup_int32(innvl, "fd", &fd); 6110 if (error != 0) 6111 return (SET_ERROR(EINVAL)); 6112 6113 (void) nvlist_lookup_string(innvl, "fromsnap", &fromname); 6114 6115 largeblockok = nvlist_exists(innvl, "largeblockok"); 6116 embedok = nvlist_exists(innvl, "embedok"); 6117 compressok = nvlist_exists(innvl, "compressok"); 6118 rawok = nvlist_exists(innvl, "rawok"); 6119 6120 (void) nvlist_lookup_uint64(innvl, "resume_object", &resumeobj); 6121 (void) nvlist_lookup_uint64(innvl, "resume_offset", &resumeoff); 6122 6123 file_t *fp = getf(fd); 6124 if (fp == NULL) 6125 return (SET_ERROR(EBADF)); 6126 6127 off = fp->f_offset; 6128 error = dmu_send(snapname, fromname, embedok, largeblockok, compressok, 6129 rawok, fd, resumeobj, resumeoff, fp->f_vnode, &off); 6130 6131 if (VOP_SEEK(fp->f_vnode, fp->f_offset, &off, NULL) == 0) 6132 fp->f_offset = off; 6133 releasef(fd); 6134 return (error); 6135 } 6136 6137 /* 6138 * Determine approximately how large a zfs send stream will be -- the number 6139 * of bytes that will be written to the fd supplied to zfs_ioc_send_new(). 6140 * 6141 * innvl: { 6142 * (optional) "from" -> full snap or bookmark name to send an incremental 6143 * from 6144 * (optional) "largeblockok" -> (value ignored) 6145 * indicates that blocks > 128KB are permitted 6146 * (optional) "embedok" -> (value ignored) 6147 * presence indicates DRR_WRITE_EMBEDDED records are permitted 6148 * (optional) "compressok" -> (value ignored) 6149 * presence indicates compressed DRR_WRITE records are permitted 6150 * } 6151 * 6152 * outnvl: { 6153 * "space" -> bytes of space (uint64) 6154 * } 6155 */ 6156 static int 6157 zfs_ioc_send_space(const char *snapname, nvlist_t *innvl, nvlist_t *outnvl) 6158 { 6159 dsl_pool_t *dp; 6160 dsl_dataset_t *tosnap; 6161 int error; 6162 char *fromname; 6163 boolean_t compressok; 6164 boolean_t rawok; 6165 uint64_t space; 6166 6167 error = dsl_pool_hold(snapname, FTAG, &dp); 6168 if (error != 0) 6169 return (error); 6170 6171 error = dsl_dataset_hold(dp, snapname, FTAG, &tosnap); 6172 if (error != 0) { 6173 dsl_pool_rele(dp, FTAG); 6174 return (error); 6175 } 6176 6177 compressok = nvlist_exists(innvl, "compressok"); 6178 rawok = nvlist_exists(innvl, "rawok"); 6179 6180 error = nvlist_lookup_string(innvl, "from", &fromname); 6181 if (error == 0) { 6182 if (strchr(fromname, '@') != NULL) { 6183 /* 6184 * If from is a snapshot, hold it and use the more 6185 * efficient dmu_send_estimate to estimate send space 6186 * size using deadlists. 6187 */ 6188 dsl_dataset_t *fromsnap; 6189 error = dsl_dataset_hold(dp, fromname, FTAG, &fromsnap); 6190 if (error != 0) 6191 goto out; 6192 error = dmu_send_estimate(tosnap, fromsnap, 6193 compressok || rawok, &space); 6194 dsl_dataset_rele(fromsnap, FTAG); 6195 } else if (strchr(fromname, '#') != NULL) { 6196 /* 6197 * If from is a bookmark, fetch the creation TXG of the 6198 * snapshot it was created from and use that to find 6199 * blocks that were born after it. 6200 */ 6201 zfs_bookmark_phys_t frombm; 6202 6203 error = dsl_bookmark_lookup(dp, fromname, tosnap, 6204 &frombm); 6205 if (error != 0) 6206 goto out; 6207 error = dmu_send_estimate_from_txg(tosnap, 6208 frombm.zbm_creation_txg, compressok || rawok, 6209 &space); 6210 } else { 6211 /* 6212 * from is not properly formatted as a snapshot or 6213 * bookmark 6214 */ 6215 error = SET_ERROR(EINVAL); 6216 goto out; 6217 } 6218 } else { 6219 /* 6220 * If estimating the size of a full send, use dmu_send_estimate. 6221 */ 6222 error = dmu_send_estimate(tosnap, NULL, compressok || rawok, 6223 &space); 6224 } 6225 6226 fnvlist_add_uint64(outnvl, "space", space); 6227 6228 out: 6229 dsl_dataset_rele(tosnap, FTAG); 6230 dsl_pool_rele(dp, FTAG); 6231 return (error); 6232 } 6233 6234 /* 6235 * Sync the currently open TXG to disk for the specified pool. 6236 * This is somewhat similar to 'zfs_sync()'. 6237 * For cases that do not result in error this ioctl will wait for 6238 * the currently open TXG to commit before returning back to the caller. 6239 * 6240 * innvl: { 6241 * "force" -> when true, force uberblock update even if there is no dirty data. 6242 * In addition this will cause the vdev configuration to be written 6243 * out including updating the zpool cache file. (boolean_t) 6244 * } 6245 * 6246 * onvl is unused 6247 */ 6248 /* ARGSUSED */ 6249 static int 6250 zfs_ioc_pool_sync(const char *pool, nvlist_t *innvl, nvlist_t *onvl) 6251 { 6252 int err; 6253 boolean_t force; 6254 spa_t *spa; 6255 6256 if ((err = spa_open(pool, &spa, FTAG)) != 0) 6257 return (err); 6258 6259 force = fnvlist_lookup_boolean_value(innvl, "force"); 6260 if (force) { 6261 spa_config_enter(spa, SCL_CONFIG, FTAG, RW_WRITER); 6262 vdev_config_dirty(spa->spa_root_vdev); 6263 spa_config_exit(spa, SCL_CONFIG, FTAG); 6264 } 6265 txg_wait_synced(spa_get_dsl(spa), 0); 6266 6267 spa_close(spa, FTAG); 6268 6269 return (err); 6270 } 6271 6272 /* 6273 * Load a user's wrapping key into the kernel. 6274 * innvl: { 6275 * "hidden_args" -> { "wkeydata" -> value } 6276 * raw uint8_t array of encryption wrapping key data (32 bytes) 6277 * (optional) "noop" -> (value ignored) 6278 * presence indicated key should only be verified, not loaded 6279 * } 6280 */ 6281 /* ARGSUSED */ 6282 static int 6283 zfs_ioc_load_key(const char *dsname, nvlist_t *innvl, nvlist_t *outnvl) 6284 { 6285 int ret = 0; 6286 dsl_crypto_params_t *dcp = NULL; 6287 nvlist_t *hidden_args; 6288 boolean_t noop = nvlist_exists(innvl, "noop"); 6289 6290 if (strchr(dsname, '@') != NULL || strchr(dsname, '%') != NULL) { 6291 ret = SET_ERROR(EINVAL); 6292 goto error; 6293 } 6294 6295 ret = nvlist_lookup_nvlist(innvl, ZPOOL_HIDDEN_ARGS, &hidden_args); 6296 if (ret != 0) { 6297 ret = SET_ERROR(EINVAL); 6298 goto error; 6299 } 6300 6301 ret = dsl_crypto_params_create_nvlist(DCP_CMD_NONE, NULL, 6302 hidden_args, &dcp); 6303 if (ret != 0) 6304 goto error; 6305 6306 ret = spa_keystore_load_wkey(dsname, dcp, noop); 6307 if (ret != 0) 6308 goto error; 6309 6310 dsl_crypto_params_free(dcp, noop); 6311 6312 return (0); 6313 6314 error: 6315 dsl_crypto_params_free(dcp, B_TRUE); 6316 return (ret); 6317 } 6318 6319 /* 6320 * Unload a user's wrapping key from the kernel. 6321 * Both innvl and outnvl are unused. 6322 */ 6323 /* ARGSUSED */ 6324 static int 6325 zfs_ioc_unload_key(const char *dsname, nvlist_t *innvl, nvlist_t *outnvl) 6326 { 6327 int ret = 0; 6328 6329 if (strchr(dsname, '@') != NULL || strchr(dsname, '%') != NULL) { 6330 ret = (SET_ERROR(EINVAL)); 6331 goto out; 6332 } 6333 6334 ret = spa_keystore_unload_wkey(dsname); 6335 if (ret != 0) 6336 goto out; 6337 6338 out: 6339 return (ret); 6340 } 6341 6342 /* 6343 * Changes a user's wrapping key used to decrypt a dataset. The keyformat, 6344 * keylocation, pbkdf2salt, and pbkdf2iters properties can also be specified 6345 * here to change how the key is derived in userspace. 6346 * 6347 * innvl: { 6348 * "hidden_args" (optional) -> { "wkeydata" -> value } 6349 * raw uint8_t array of new encryption wrapping key data (32 bytes) 6350 * "props" (optional) -> { prop -> value } 6351 * } 6352 * 6353 * outnvl is unused 6354 */ 6355 /* ARGSUSED */ 6356 static int 6357 zfs_ioc_change_key(const char *dsname, nvlist_t *innvl, nvlist_t *outnvl) 6358 { 6359 int ret; 6360 uint64_t cmd = DCP_CMD_NONE; 6361 dsl_crypto_params_t *dcp = NULL; 6362 nvlist_t *args = NULL, *hidden_args = NULL; 6363 6364 if (strchr(dsname, '@') != NULL || strchr(dsname, '%') != NULL) { 6365 ret = (SET_ERROR(EINVAL)); 6366 goto error; 6367 } 6368 6369 (void) nvlist_lookup_uint64(innvl, "crypt_cmd", &cmd); 6370 (void) nvlist_lookup_nvlist(innvl, "props", &args); 6371 (void) nvlist_lookup_nvlist(innvl, ZPOOL_HIDDEN_ARGS, &hidden_args); 6372 6373 ret = dsl_crypto_params_create_nvlist(cmd, args, hidden_args, &dcp); 6374 if (ret != 0) 6375 goto error; 6376 6377 ret = spa_keystore_change_key(dsname, dcp); 6378 if (ret != 0) 6379 goto error; 6380 6381 dsl_crypto_params_free(dcp, B_FALSE); 6382 6383 return (0); 6384 6385 error: 6386 dsl_crypto_params_free(dcp, B_TRUE); 6387 return (ret); 6388 } 6389 6390 static zfs_ioc_vec_t zfs_ioc_vec[ZFS_IOC_LAST - ZFS_IOC_FIRST]; 6391 6392 static void 6393 zfs_ioctl_register_legacy(zfs_ioc_t ioc, zfs_ioc_legacy_func_t *func, 6394 zfs_secpolicy_func_t *secpolicy, zfs_ioc_namecheck_t namecheck, 6395 boolean_t log_history, zfs_ioc_poolcheck_t pool_check) 6396 { 6397 zfs_ioc_vec_t *vec = &zfs_ioc_vec[ioc - ZFS_IOC_FIRST]; 6398 6399 ASSERT3U(ioc, >=, ZFS_IOC_FIRST); 6400 ASSERT3U(ioc, <, ZFS_IOC_LAST); 6401 ASSERT3P(vec->zvec_legacy_func, ==, NULL); 6402 ASSERT3P(vec->zvec_func, ==, NULL); 6403 6404 vec->zvec_legacy_func = func; 6405 vec->zvec_secpolicy = secpolicy; 6406 vec->zvec_namecheck = namecheck; 6407 vec->zvec_allow_log = log_history; 6408 vec->zvec_pool_check = pool_check; 6409 } 6410 6411 /* 6412 * See the block comment at the beginning of this file for details on 6413 * each argument to this function. 6414 */ 6415 static void 6416 zfs_ioctl_register(const char *name, zfs_ioc_t ioc, zfs_ioc_func_t *func, 6417 zfs_secpolicy_func_t *secpolicy, zfs_ioc_namecheck_t namecheck, 6418 zfs_ioc_poolcheck_t pool_check, boolean_t smush_outnvlist, 6419 boolean_t allow_log) 6420 { 6421 zfs_ioc_vec_t *vec = &zfs_ioc_vec[ioc - ZFS_IOC_FIRST]; 6422 6423 ASSERT3U(ioc, >=, ZFS_IOC_FIRST); 6424 ASSERT3U(ioc, <, ZFS_IOC_LAST); 6425 ASSERT3P(vec->zvec_legacy_func, ==, NULL); 6426 ASSERT3P(vec->zvec_func, ==, NULL); 6427 6428 /* if we are logging, the name must be valid */ 6429 ASSERT(!allow_log || namecheck != NO_NAME); 6430 6431 vec->zvec_name = name; 6432 vec->zvec_func = func; 6433 vec->zvec_secpolicy = secpolicy; 6434 vec->zvec_namecheck = namecheck; 6435 vec->zvec_pool_check = pool_check; 6436 vec->zvec_smush_outnvlist = smush_outnvlist; 6437 vec->zvec_allow_log = allow_log; 6438 } 6439 6440 static void 6441 zfs_ioctl_register_pool(zfs_ioc_t ioc, zfs_ioc_legacy_func_t *func, 6442 zfs_secpolicy_func_t *secpolicy, boolean_t log_history, 6443 zfs_ioc_poolcheck_t pool_check) 6444 { 6445 zfs_ioctl_register_legacy(ioc, func, secpolicy, 6446 POOL_NAME, log_history, pool_check); 6447 } 6448 6449 static void 6450 zfs_ioctl_register_dataset_nolog(zfs_ioc_t ioc, zfs_ioc_legacy_func_t *func, 6451 zfs_secpolicy_func_t *secpolicy, zfs_ioc_poolcheck_t pool_check) 6452 { 6453 zfs_ioctl_register_legacy(ioc, func, secpolicy, 6454 DATASET_NAME, B_FALSE, pool_check); 6455 } 6456 6457 static void 6458 zfs_ioctl_register_pool_modify(zfs_ioc_t ioc, zfs_ioc_legacy_func_t *func) 6459 { 6460 zfs_ioctl_register_legacy(ioc, func, zfs_secpolicy_config, 6461 POOL_NAME, B_TRUE, POOL_CHECK_SUSPENDED | POOL_CHECK_READONLY); 6462 } 6463 6464 static void 6465 zfs_ioctl_register_pool_meta(zfs_ioc_t ioc, zfs_ioc_legacy_func_t *func, 6466 zfs_secpolicy_func_t *secpolicy) 6467 { 6468 zfs_ioctl_register_legacy(ioc, func, secpolicy, 6469 NO_NAME, B_FALSE, POOL_CHECK_NONE); 6470 } 6471 6472 static void 6473 zfs_ioctl_register_dataset_read_secpolicy(zfs_ioc_t ioc, 6474 zfs_ioc_legacy_func_t *func, zfs_secpolicy_func_t *secpolicy) 6475 { 6476 zfs_ioctl_register_legacy(ioc, func, secpolicy, 6477 DATASET_NAME, B_FALSE, POOL_CHECK_SUSPENDED); 6478 } 6479 6480 static void 6481 zfs_ioctl_register_dataset_read(zfs_ioc_t ioc, zfs_ioc_legacy_func_t *func) 6482 { 6483 zfs_ioctl_register_dataset_read_secpolicy(ioc, func, 6484 zfs_secpolicy_read); 6485 } 6486 6487 static void 6488 zfs_ioctl_register_dataset_modify(zfs_ioc_t ioc, zfs_ioc_legacy_func_t *func, 6489 zfs_secpolicy_func_t *secpolicy) 6490 { 6491 zfs_ioctl_register_legacy(ioc, func, secpolicy, 6492 DATASET_NAME, B_TRUE, POOL_CHECK_SUSPENDED | POOL_CHECK_READONLY); 6493 } 6494 6495 static void 6496 zfs_ioctl_init(void) 6497 { 6498 zfs_ioctl_register("snapshot", ZFS_IOC_SNAPSHOT, 6499 zfs_ioc_snapshot, zfs_secpolicy_snapshot, POOL_NAME, 6500 POOL_CHECK_SUSPENDED | POOL_CHECK_READONLY, B_TRUE, B_TRUE); 6501 6502 zfs_ioctl_register("log_history", ZFS_IOC_LOG_HISTORY, 6503 zfs_ioc_log_history, zfs_secpolicy_log_history, NO_NAME, 6504 POOL_CHECK_SUSPENDED | POOL_CHECK_READONLY, B_FALSE, B_FALSE); 6505 6506 zfs_ioctl_register("space_snaps", ZFS_IOC_SPACE_SNAPS, 6507 zfs_ioc_space_snaps, zfs_secpolicy_read, DATASET_NAME, 6508 POOL_CHECK_SUSPENDED, B_FALSE, B_FALSE); 6509 6510 zfs_ioctl_register("send", ZFS_IOC_SEND_NEW, 6511 zfs_ioc_send_new, zfs_secpolicy_send_new, DATASET_NAME, 6512 POOL_CHECK_SUSPENDED, B_FALSE, B_FALSE); 6513 6514 zfs_ioctl_register("send_space", ZFS_IOC_SEND_SPACE, 6515 zfs_ioc_send_space, zfs_secpolicy_read, DATASET_NAME, 6516 POOL_CHECK_SUSPENDED, B_FALSE, B_FALSE); 6517 6518 zfs_ioctl_register("create", ZFS_IOC_CREATE, 6519 zfs_ioc_create, zfs_secpolicy_create_clone, DATASET_NAME, 6520 POOL_CHECK_SUSPENDED | POOL_CHECK_READONLY, B_TRUE, B_TRUE); 6521 6522 zfs_ioctl_register("clone", ZFS_IOC_CLONE, 6523 zfs_ioc_clone, zfs_secpolicy_create_clone, DATASET_NAME, 6524 POOL_CHECK_SUSPENDED | POOL_CHECK_READONLY, B_TRUE, B_TRUE); 6525 6526 zfs_ioctl_register("remap", ZFS_IOC_REMAP, 6527 zfs_ioc_remap, zfs_secpolicy_remap, DATASET_NAME, 6528 POOL_CHECK_SUSPENDED | POOL_CHECK_READONLY, B_FALSE, B_TRUE); 6529 6530 zfs_ioctl_register("destroy_snaps", ZFS_IOC_DESTROY_SNAPS, 6531 zfs_ioc_destroy_snaps, zfs_secpolicy_destroy_snaps, POOL_NAME, 6532 POOL_CHECK_SUSPENDED | POOL_CHECK_READONLY, B_TRUE, B_TRUE); 6533 6534 zfs_ioctl_register("hold", ZFS_IOC_HOLD, 6535 zfs_ioc_hold, zfs_secpolicy_hold, POOL_NAME, 6536 POOL_CHECK_SUSPENDED | POOL_CHECK_READONLY, B_TRUE, B_TRUE); 6537 zfs_ioctl_register("release", ZFS_IOC_RELEASE, 6538 zfs_ioc_release, zfs_secpolicy_release, POOL_NAME, 6539 POOL_CHECK_SUSPENDED | POOL_CHECK_READONLY, B_TRUE, B_TRUE); 6540 6541 zfs_ioctl_register("get_holds", ZFS_IOC_GET_HOLDS, 6542 zfs_ioc_get_holds, zfs_secpolicy_read, DATASET_NAME, 6543 POOL_CHECK_SUSPENDED, B_FALSE, B_FALSE); 6544 6545 zfs_ioctl_register("rollback", ZFS_IOC_ROLLBACK, 6546 zfs_ioc_rollback, zfs_secpolicy_rollback, DATASET_NAME, 6547 POOL_CHECK_SUSPENDED | POOL_CHECK_READONLY, B_FALSE, B_TRUE); 6548 6549 zfs_ioctl_register("bookmark", ZFS_IOC_BOOKMARK, 6550 zfs_ioc_bookmark, zfs_secpolicy_bookmark, POOL_NAME, 6551 POOL_CHECK_SUSPENDED | POOL_CHECK_READONLY, B_TRUE, B_TRUE); 6552 6553 zfs_ioctl_register("get_bookmarks", ZFS_IOC_GET_BOOKMARKS, 6554 zfs_ioc_get_bookmarks, zfs_secpolicy_read, DATASET_NAME, 6555 POOL_CHECK_SUSPENDED, B_FALSE, B_FALSE); 6556 6557 zfs_ioctl_register("destroy_bookmarks", ZFS_IOC_DESTROY_BOOKMARKS, 6558 zfs_ioc_destroy_bookmarks, zfs_secpolicy_destroy_bookmarks, 6559 POOL_NAME, 6560 POOL_CHECK_SUSPENDED | POOL_CHECK_READONLY, B_TRUE, B_TRUE); 6561 6562 zfs_ioctl_register("channel_program", ZFS_IOC_CHANNEL_PROGRAM, 6563 zfs_ioc_channel_program, zfs_secpolicy_config, 6564 POOL_NAME, POOL_CHECK_SUSPENDED | POOL_CHECK_READONLY, B_TRUE, 6565 B_TRUE); 6566 6567 zfs_ioctl_register("zpool_checkpoint", ZFS_IOC_POOL_CHECKPOINT, 6568 zfs_ioc_pool_checkpoint, zfs_secpolicy_config, POOL_NAME, 6569 POOL_CHECK_SUSPENDED | POOL_CHECK_READONLY, B_TRUE, B_TRUE); 6570 6571 zfs_ioctl_register("zpool_discard_checkpoint", 6572 ZFS_IOC_POOL_DISCARD_CHECKPOINT, zfs_ioc_pool_discard_checkpoint, 6573 zfs_secpolicy_config, POOL_NAME, 6574 POOL_CHECK_SUSPENDED | POOL_CHECK_READONLY, B_TRUE, B_TRUE); 6575 6576 zfs_ioctl_register("initialize", ZFS_IOC_POOL_INITIALIZE, 6577 zfs_ioc_pool_initialize, zfs_secpolicy_config, POOL_NAME, 6578 POOL_CHECK_SUSPENDED | POOL_CHECK_READONLY, B_TRUE, B_TRUE); 6579 6580 zfs_ioctl_register("trim", ZFS_IOC_POOL_TRIM, 6581 zfs_ioc_pool_trim, zfs_secpolicy_config, POOL_NAME, 6582 POOL_CHECK_SUSPENDED | POOL_CHECK_READONLY, B_TRUE, B_TRUE); 6583 6584 zfs_ioctl_register("sync", ZFS_IOC_POOL_SYNC, 6585 zfs_ioc_pool_sync, zfs_secpolicy_none, POOL_NAME, 6586 POOL_CHECK_SUSPENDED | POOL_CHECK_READONLY, B_FALSE, B_FALSE); 6587 6588 zfs_ioctl_register("load-key", ZFS_IOC_LOAD_KEY, 6589 zfs_ioc_load_key, zfs_secpolicy_load_key, 6590 DATASET_NAME, POOL_CHECK_SUSPENDED, B_TRUE, B_TRUE); 6591 zfs_ioctl_register("unload-key", ZFS_IOC_UNLOAD_KEY, 6592 zfs_ioc_unload_key, zfs_secpolicy_load_key, 6593 DATASET_NAME, POOL_CHECK_SUSPENDED, B_TRUE, B_TRUE); 6594 zfs_ioctl_register("change-key", ZFS_IOC_CHANGE_KEY, 6595 zfs_ioc_change_key, zfs_secpolicy_change_key, 6596 DATASET_NAME, POOL_CHECK_SUSPENDED | POOL_CHECK_READONLY, 6597 B_TRUE, B_TRUE); 6598 6599 /* IOCTLS that use the legacy function signature */ 6600 6601 zfs_ioctl_register_legacy(ZFS_IOC_POOL_FREEZE, zfs_ioc_pool_freeze, 6602 zfs_secpolicy_config, NO_NAME, B_FALSE, POOL_CHECK_READONLY); 6603 6604 zfs_ioctl_register_pool(ZFS_IOC_POOL_CREATE, zfs_ioc_pool_create, 6605 zfs_secpolicy_config, B_TRUE, POOL_CHECK_NONE); 6606 zfs_ioctl_register_pool_modify(ZFS_IOC_POOL_SCAN, 6607 zfs_ioc_pool_scan); 6608 zfs_ioctl_register_pool_modify(ZFS_IOC_POOL_UPGRADE, 6609 zfs_ioc_pool_upgrade); 6610 zfs_ioctl_register_pool_modify(ZFS_IOC_VDEV_ADD, 6611 zfs_ioc_vdev_add); 6612 zfs_ioctl_register_pool_modify(ZFS_IOC_VDEV_REMOVE, 6613 zfs_ioc_vdev_remove); 6614 zfs_ioctl_register_pool_modify(ZFS_IOC_VDEV_SET_STATE, 6615 zfs_ioc_vdev_set_state); 6616 zfs_ioctl_register_pool_modify(ZFS_IOC_VDEV_ATTACH, 6617 zfs_ioc_vdev_attach); 6618 zfs_ioctl_register_pool_modify(ZFS_IOC_VDEV_DETACH, 6619 zfs_ioc_vdev_detach); 6620 zfs_ioctl_register_pool_modify(ZFS_IOC_VDEV_SETPATH, 6621 zfs_ioc_vdev_setpath); 6622 zfs_ioctl_register_pool_modify(ZFS_IOC_VDEV_SETFRU, 6623 zfs_ioc_vdev_setfru); 6624 zfs_ioctl_register_pool_modify(ZFS_IOC_POOL_SET_PROPS, 6625 zfs_ioc_pool_set_props); 6626 zfs_ioctl_register_pool_modify(ZFS_IOC_VDEV_SPLIT, 6627 zfs_ioc_vdev_split); 6628 zfs_ioctl_register_pool_modify(ZFS_IOC_POOL_REGUID, 6629 zfs_ioc_pool_reguid); 6630 6631 zfs_ioctl_register_pool_meta(ZFS_IOC_POOL_CONFIGS, 6632 zfs_ioc_pool_configs, zfs_secpolicy_none); 6633 zfs_ioctl_register_pool_meta(ZFS_IOC_POOL_TRYIMPORT, 6634 zfs_ioc_pool_tryimport, zfs_secpolicy_config); 6635 zfs_ioctl_register_pool_meta(ZFS_IOC_INJECT_FAULT, 6636 zfs_ioc_inject_fault, zfs_secpolicy_inject); 6637 zfs_ioctl_register_pool_meta(ZFS_IOC_CLEAR_FAULT, 6638 zfs_ioc_clear_fault, zfs_secpolicy_inject); 6639 zfs_ioctl_register_pool_meta(ZFS_IOC_INJECT_LIST_NEXT, 6640 zfs_ioc_inject_list_next, zfs_secpolicy_inject); 6641 6642 /* 6643 * pool destroy, and export don't log the history as part of 6644 * zfsdev_ioctl, but rather zfs_ioc_pool_export 6645 * does the logging of those commands. 6646 */ 6647 zfs_ioctl_register_pool(ZFS_IOC_POOL_DESTROY, zfs_ioc_pool_destroy, 6648 zfs_secpolicy_config, B_FALSE, POOL_CHECK_NONE); 6649 zfs_ioctl_register_pool(ZFS_IOC_POOL_EXPORT, zfs_ioc_pool_export, 6650 zfs_secpolicy_config, B_FALSE, POOL_CHECK_NONE); 6651 6652 zfs_ioctl_register_pool(ZFS_IOC_POOL_STATS, zfs_ioc_pool_stats, 6653 zfs_secpolicy_read, B_FALSE, POOL_CHECK_NONE); 6654 zfs_ioctl_register_pool(ZFS_IOC_POOL_GET_PROPS, zfs_ioc_pool_get_props, 6655 zfs_secpolicy_read, B_FALSE, POOL_CHECK_NONE); 6656 6657 zfs_ioctl_register_pool(ZFS_IOC_ERROR_LOG, zfs_ioc_error_log, 6658 zfs_secpolicy_inject, B_FALSE, POOL_CHECK_SUSPENDED); 6659 zfs_ioctl_register_pool(ZFS_IOC_DSOBJ_TO_DSNAME, 6660 zfs_ioc_dsobj_to_dsname, 6661 zfs_secpolicy_diff, B_FALSE, POOL_CHECK_SUSPENDED); 6662 zfs_ioctl_register_pool(ZFS_IOC_POOL_GET_HISTORY, 6663 zfs_ioc_pool_get_history, 6664 zfs_secpolicy_config, B_FALSE, POOL_CHECK_SUSPENDED); 6665 6666 zfs_ioctl_register_pool(ZFS_IOC_POOL_IMPORT, zfs_ioc_pool_import, 6667 zfs_secpolicy_config, B_TRUE, POOL_CHECK_NONE); 6668 6669 zfs_ioctl_register_pool(ZFS_IOC_CLEAR, zfs_ioc_clear, 6670 zfs_secpolicy_config, B_TRUE, POOL_CHECK_READONLY); 6671 zfs_ioctl_register_pool(ZFS_IOC_POOL_REOPEN, zfs_ioc_pool_reopen, 6672 zfs_secpolicy_config, B_TRUE, POOL_CHECK_SUSPENDED); 6673 6674 zfs_ioctl_register_dataset_read(ZFS_IOC_SPACE_WRITTEN, 6675 zfs_ioc_space_written); 6676 zfs_ioctl_register_dataset_read(ZFS_IOC_OBJSET_RECVD_PROPS, 6677 zfs_ioc_objset_recvd_props); 6678 zfs_ioctl_register_dataset_read(ZFS_IOC_NEXT_OBJ, 6679 zfs_ioc_next_obj); 6680 zfs_ioctl_register_dataset_read(ZFS_IOC_GET_FSACL, 6681 zfs_ioc_get_fsacl); 6682 zfs_ioctl_register_dataset_read(ZFS_IOC_OBJSET_STATS, 6683 zfs_ioc_objset_stats); 6684 zfs_ioctl_register_dataset_read(ZFS_IOC_OBJSET_ZPLPROPS, 6685 zfs_ioc_objset_zplprops); 6686 zfs_ioctl_register_dataset_read(ZFS_IOC_DATASET_LIST_NEXT, 6687 zfs_ioc_dataset_list_next); 6688 zfs_ioctl_register_dataset_read(ZFS_IOC_SNAPSHOT_LIST_NEXT, 6689 zfs_ioc_snapshot_list_next); 6690 zfs_ioctl_register_dataset_read(ZFS_IOC_SEND_PROGRESS, 6691 zfs_ioc_send_progress); 6692 6693 zfs_ioctl_register_dataset_read_secpolicy(ZFS_IOC_DIFF, 6694 zfs_ioc_diff, zfs_secpolicy_diff); 6695 zfs_ioctl_register_dataset_read_secpolicy(ZFS_IOC_OBJ_TO_STATS, 6696 zfs_ioc_obj_to_stats, zfs_secpolicy_diff); 6697 zfs_ioctl_register_dataset_read_secpolicy(ZFS_IOC_OBJ_TO_PATH, 6698 zfs_ioc_obj_to_path, zfs_secpolicy_diff); 6699 zfs_ioctl_register_dataset_read_secpolicy(ZFS_IOC_USERSPACE_ONE, 6700 zfs_ioc_userspace_one, zfs_secpolicy_userspace_one); 6701 zfs_ioctl_register_dataset_read_secpolicy(ZFS_IOC_USERSPACE_MANY, 6702 zfs_ioc_userspace_many, zfs_secpolicy_userspace_many); 6703 zfs_ioctl_register_dataset_read_secpolicy(ZFS_IOC_SEND, 6704 zfs_ioc_send, zfs_secpolicy_send); 6705 6706 zfs_ioctl_register_dataset_modify(ZFS_IOC_SET_PROP, zfs_ioc_set_prop, 6707 zfs_secpolicy_none); 6708 zfs_ioctl_register_dataset_modify(ZFS_IOC_DESTROY, zfs_ioc_destroy, 6709 zfs_secpolicy_destroy); 6710 zfs_ioctl_register_dataset_modify(ZFS_IOC_RENAME, zfs_ioc_rename, 6711 zfs_secpolicy_rename); 6712 zfs_ioctl_register_dataset_modify(ZFS_IOC_RECV, zfs_ioc_recv, 6713 zfs_secpolicy_recv); 6714 zfs_ioctl_register_dataset_modify(ZFS_IOC_PROMOTE, zfs_ioc_promote, 6715 zfs_secpolicy_promote); 6716 zfs_ioctl_register_dataset_modify(ZFS_IOC_INHERIT_PROP, 6717 zfs_ioc_inherit_prop, zfs_secpolicy_inherit_prop); 6718 zfs_ioctl_register_dataset_modify(ZFS_IOC_SET_FSACL, zfs_ioc_set_fsacl, 6719 zfs_secpolicy_set_fsacl); 6720 6721 zfs_ioctl_register_dataset_nolog(ZFS_IOC_SHARE, zfs_ioc_share, 6722 zfs_secpolicy_share, POOL_CHECK_NONE); 6723 zfs_ioctl_register_dataset_nolog(ZFS_IOC_SMB_ACL, zfs_ioc_smb_acl, 6724 zfs_secpolicy_smb_acl, POOL_CHECK_NONE); 6725 zfs_ioctl_register_dataset_nolog(ZFS_IOC_USERSPACE_UPGRADE, 6726 zfs_ioc_userspace_upgrade, zfs_secpolicy_userspace_upgrade, 6727 POOL_CHECK_SUSPENDED | POOL_CHECK_READONLY); 6728 zfs_ioctl_register_dataset_nolog(ZFS_IOC_TMP_SNAPSHOT, 6729 zfs_ioc_tmp_snapshot, zfs_secpolicy_tmp_snapshot, 6730 POOL_CHECK_SUSPENDED | POOL_CHECK_READONLY); 6731 } 6732 6733 int 6734 pool_status_check(const char *name, zfs_ioc_namecheck_t type, 6735 zfs_ioc_poolcheck_t check) 6736 { 6737 spa_t *spa; 6738 int error; 6739 6740 ASSERT(type == POOL_NAME || type == DATASET_NAME); 6741 6742 if (check & POOL_CHECK_NONE) 6743 return (0); 6744 6745 error = spa_open(name, &spa, FTAG); 6746 if (error == 0) { 6747 if ((check & POOL_CHECK_SUSPENDED) && spa_suspended(spa)) 6748 error = SET_ERROR(EAGAIN); 6749 else if ((check & POOL_CHECK_READONLY) && !spa_writeable(spa)) 6750 error = SET_ERROR(EROFS); 6751 spa_close(spa, FTAG); 6752 } 6753 return (error); 6754 } 6755 6756 /* 6757 * Find a free minor number. 6758 */ 6759 minor_t 6760 zfsdev_minor_alloc(void) 6761 { 6762 static minor_t last_minor; 6763 minor_t m; 6764 6765 ASSERT(MUTEX_HELD(&zfsdev_state_lock)); 6766 6767 for (m = last_minor + 1; m != last_minor; m++) { 6768 if (m > ZFSDEV_MAX_MINOR) 6769 m = 1; 6770 if (ddi_get_soft_state(zfsdev_state, m) == NULL) { 6771 last_minor = m; 6772 return (m); 6773 } 6774 } 6775 6776 return (0); 6777 } 6778 6779 static int 6780 zfs_ctldev_init(dev_t *devp) 6781 { 6782 minor_t minor; 6783 zfs_soft_state_t *zs; 6784 6785 ASSERT(MUTEX_HELD(&zfsdev_state_lock)); 6786 ASSERT(getminor(*devp) == 0); 6787 6788 minor = zfsdev_minor_alloc(); 6789 if (minor == 0) 6790 return (SET_ERROR(ENXIO)); 6791 6792 if (ddi_soft_state_zalloc(zfsdev_state, minor) != DDI_SUCCESS) 6793 return (SET_ERROR(EAGAIN)); 6794 6795 *devp = makedevice(getemajor(*devp), minor); 6796 6797 zs = ddi_get_soft_state(zfsdev_state, minor); 6798 zs->zss_type = ZSST_CTLDEV; 6799 zfs_onexit_init((zfs_onexit_t **)&zs->zss_data); 6800 6801 return (0); 6802 } 6803 6804 static void 6805 zfs_ctldev_destroy(zfs_onexit_t *zo, minor_t minor) 6806 { 6807 ASSERT(MUTEX_HELD(&zfsdev_state_lock)); 6808 6809 zfs_onexit_destroy(zo); 6810 ddi_soft_state_free(zfsdev_state, minor); 6811 } 6812 6813 void * 6814 zfsdev_get_soft_state(minor_t minor, enum zfs_soft_state_type which) 6815 { 6816 zfs_soft_state_t *zp; 6817 6818 zp = ddi_get_soft_state(zfsdev_state, minor); 6819 if (zp == NULL || zp->zss_type != which) 6820 return (NULL); 6821 6822 return (zp->zss_data); 6823 } 6824 6825 static int 6826 zfsdev_open(dev_t *devp, int flag, int otyp, cred_t *cr) 6827 { 6828 int error = 0; 6829 6830 if (getminor(*devp) != 0) 6831 return (zvol_open(devp, flag, otyp, cr)); 6832 6833 /* This is the control device. Allocate a new minor if requested. */ 6834 if (flag & FEXCL) { 6835 mutex_enter(&zfsdev_state_lock); 6836 error = zfs_ctldev_init(devp); 6837 mutex_exit(&zfsdev_state_lock); 6838 } 6839 6840 return (error); 6841 } 6842 6843 static int 6844 zfsdev_close(dev_t dev, int flag, int otyp, cred_t *cr) 6845 { 6846 zfs_onexit_t *zo; 6847 minor_t minor = getminor(dev); 6848 6849 if (minor == 0) 6850 return (0); 6851 6852 mutex_enter(&zfsdev_state_lock); 6853 zo = zfsdev_get_soft_state(minor, ZSST_CTLDEV); 6854 if (zo == NULL) { 6855 mutex_exit(&zfsdev_state_lock); 6856 return (zvol_close(dev, flag, otyp, cr)); 6857 } 6858 zfs_ctldev_destroy(zo, minor); 6859 mutex_exit(&zfsdev_state_lock); 6860 6861 return (0); 6862 } 6863 6864 static int 6865 zfsdev_ioctl(dev_t dev, int cmd, intptr_t arg, int flag, cred_t *cr, int *rvalp) 6866 { 6867 zfs_cmd_t *zc; 6868 uint_t vecnum; 6869 int error, rc, len; 6870 minor_t minor = getminor(dev); 6871 const zfs_ioc_vec_t *vec; 6872 char *saved_poolname = NULL; 6873 nvlist_t *innvl = NULL; 6874 6875 if (minor != 0 && 6876 zfsdev_get_soft_state(minor, ZSST_CTLDEV) == NULL) 6877 return (zvol_ioctl(dev, cmd, arg, flag, cr, rvalp)); 6878 6879 vecnum = cmd - ZFS_IOC_FIRST; 6880 ASSERT3U(getmajor(dev), ==, ddi_driver_major(zfs_dip)); 6881 6882 if (vecnum >= sizeof (zfs_ioc_vec) / sizeof (zfs_ioc_vec[0])) 6883 return (SET_ERROR(EINVAL)); 6884 vec = &zfs_ioc_vec[vecnum]; 6885 6886 zc = kmem_zalloc(sizeof (zfs_cmd_t), KM_SLEEP); 6887 6888 error = ddi_copyin((void *)arg, zc, sizeof (zfs_cmd_t), flag); 6889 if (error != 0) { 6890 error = SET_ERROR(EFAULT); 6891 goto out; 6892 } 6893 6894 zc->zc_iflags = flag & FKIOCTL; 6895 if (zc->zc_nvlist_src_size != 0) { 6896 error = get_nvlist(zc->zc_nvlist_src, zc->zc_nvlist_src_size, 6897 zc->zc_iflags, &innvl); 6898 if (error != 0) 6899 goto out; 6900 } 6901 6902 /* 6903 * Ensure that all pool/dataset names are valid before we pass down to 6904 * the lower layers. 6905 */ 6906 zc->zc_name[sizeof (zc->zc_name) - 1] = '\0'; 6907 switch (vec->zvec_namecheck) { 6908 case POOL_NAME: 6909 if (pool_namecheck(zc->zc_name, NULL, NULL) != 0) 6910 error = SET_ERROR(EINVAL); 6911 else 6912 error = pool_status_check(zc->zc_name, 6913 vec->zvec_namecheck, vec->zvec_pool_check); 6914 break; 6915 6916 case DATASET_NAME: 6917 if (dataset_namecheck(zc->zc_name, NULL, NULL) != 0) 6918 error = SET_ERROR(EINVAL); 6919 else 6920 error = pool_status_check(zc->zc_name, 6921 vec->zvec_namecheck, vec->zvec_pool_check); 6922 break; 6923 6924 case NO_NAME: 6925 break; 6926 } 6927 6928 6929 if (error == 0) 6930 error = vec->zvec_secpolicy(zc, innvl, cr); 6931 6932 if (error != 0) 6933 goto out; 6934 6935 /* legacy ioctls can modify zc_name */ 6936 len = strcspn(zc->zc_name, "/@#") + 1; 6937 saved_poolname = kmem_alloc(len, KM_SLEEP); 6938 (void) strlcpy(saved_poolname, zc->zc_name, len); 6939 6940 if (vec->zvec_func != NULL) { 6941 nvlist_t *outnvl; 6942 int puterror = 0; 6943 spa_t *spa; 6944 nvlist_t *lognv = NULL; 6945 6946 ASSERT(vec->zvec_legacy_func == NULL); 6947 6948 /* 6949 * Add the innvl to the lognv before calling the func, 6950 * in case the func changes the innvl. 6951 */ 6952 if (vec->zvec_allow_log) { 6953 lognv = fnvlist_alloc(); 6954 fnvlist_add_string(lognv, ZPOOL_HIST_IOCTL, 6955 vec->zvec_name); 6956 if (!nvlist_empty(innvl)) { 6957 fnvlist_add_nvlist(lognv, ZPOOL_HIST_INPUT_NVL, 6958 innvl); 6959 } 6960 } 6961 6962 outnvl = fnvlist_alloc(); 6963 error = vec->zvec_func(zc->zc_name, innvl, outnvl); 6964 6965 /* 6966 * Some commands can partially execute, modify state, and still 6967 * return an error. In these cases, attempt to record what 6968 * was modified. 6969 */ 6970 if ((error == 0 || 6971 (cmd == ZFS_IOC_CHANNEL_PROGRAM && error != EINVAL)) && 6972 vec->zvec_allow_log && 6973 spa_open(zc->zc_name, &spa, FTAG) == 0) { 6974 if (!nvlist_empty(outnvl)) { 6975 fnvlist_add_nvlist(lognv, ZPOOL_HIST_OUTPUT_NVL, 6976 outnvl); 6977 } 6978 if (error != 0) { 6979 fnvlist_add_int64(lognv, ZPOOL_HIST_ERRNO, 6980 error); 6981 } 6982 (void) spa_history_log_nvl(spa, lognv); 6983 spa_close(spa, FTAG); 6984 } 6985 fnvlist_free(lognv); 6986 6987 if (!nvlist_empty(outnvl) || zc->zc_nvlist_dst_size != 0) { 6988 int smusherror = 0; 6989 if (vec->zvec_smush_outnvlist) { 6990 smusherror = nvlist_smush(outnvl, 6991 zc->zc_nvlist_dst_size); 6992 } 6993 if (smusherror == 0) 6994 puterror = put_nvlist(zc, outnvl); 6995 } 6996 6997 if (puterror != 0) 6998 error = puterror; 6999 7000 nvlist_free(outnvl); 7001 } else { 7002 error = vec->zvec_legacy_func(zc); 7003 } 7004 7005 out: 7006 nvlist_free(innvl); 7007 rc = ddi_copyout(zc, (void *)arg, sizeof (zfs_cmd_t), flag); 7008 if (error == 0 && rc != 0) 7009 error = SET_ERROR(EFAULT); 7010 if (error == 0 && vec->zvec_allow_log) { 7011 char *s = tsd_get(zfs_allow_log_key); 7012 if (s != NULL) 7013 strfree(s); 7014 (void) tsd_set(zfs_allow_log_key, saved_poolname); 7015 } else { 7016 if (saved_poolname != NULL) 7017 strfree(saved_poolname); 7018 } 7019 7020 kmem_free(zc, sizeof (zfs_cmd_t)); 7021 return (error); 7022 } 7023 7024 static int 7025 zfs_attach(dev_info_t *dip, ddi_attach_cmd_t cmd) 7026 { 7027 if (cmd != DDI_ATTACH) 7028 return (DDI_FAILURE); 7029 7030 if (ddi_create_minor_node(dip, "zfs", S_IFCHR, 0, 7031 DDI_PSEUDO, 0) == DDI_FAILURE) 7032 return (DDI_FAILURE); 7033 7034 zfs_dip = dip; 7035 7036 ddi_report_dev(dip); 7037 7038 return (DDI_SUCCESS); 7039 } 7040 7041 static int 7042 zfs_detach(dev_info_t *dip, ddi_detach_cmd_t cmd) 7043 { 7044 if (spa_busy() || zfs_busy() || zvol_busy()) 7045 return (DDI_FAILURE); 7046 7047 if (cmd != DDI_DETACH) 7048 return (DDI_FAILURE); 7049 7050 zfs_dip = NULL; 7051 7052 ddi_prop_remove_all(dip); 7053 ddi_remove_minor_node(dip, NULL); 7054 7055 return (DDI_SUCCESS); 7056 } 7057 7058 /*ARGSUSED*/ 7059 static int 7060 zfs_info(dev_info_t *dip, ddi_info_cmd_t infocmd, void *arg, void **result) 7061 { 7062 switch (infocmd) { 7063 case DDI_INFO_DEVT2DEVINFO: 7064 *result = zfs_dip; 7065 return (DDI_SUCCESS); 7066 7067 case DDI_INFO_DEVT2INSTANCE: 7068 *result = (void *)0; 7069 return (DDI_SUCCESS); 7070 } 7071 7072 return (DDI_FAILURE); 7073 } 7074 7075 /* 7076 * OK, so this is a little weird. 7077 * 7078 * /dev/zfs is the control node, i.e. minor 0. 7079 * /dev/zvol/[r]dsk/pool/dataset are the zvols, minor > 0. 7080 * 7081 * /dev/zfs has basically nothing to do except serve up ioctls, 7082 * so most of the standard driver entry points are in zvol.c. 7083 */ 7084 static struct cb_ops zfs_cb_ops = { 7085 zfsdev_open, /* open */ 7086 zfsdev_close, /* close */ 7087 zvol_strategy, /* strategy */ 7088 nodev, /* print */ 7089 zvol_dump, /* dump */ 7090 zvol_read, /* read */ 7091 zvol_write, /* write */ 7092 zfsdev_ioctl, /* ioctl */ 7093 nodev, /* devmap */ 7094 nodev, /* mmap */ 7095 nodev, /* segmap */ 7096 nochpoll, /* poll */ 7097 ddi_prop_op, /* prop_op */ 7098 NULL, /* streamtab */ 7099 D_NEW | D_MP | D_64BIT, /* Driver compatibility flag */ 7100 CB_REV, /* version */ 7101 nodev, /* async read */ 7102 nodev, /* async write */ 7103 }; 7104 7105 static struct dev_ops zfs_dev_ops = { 7106 DEVO_REV, /* version */ 7107 0, /* refcnt */ 7108 zfs_info, /* info */ 7109 nulldev, /* identify */ 7110 nulldev, /* probe */ 7111 zfs_attach, /* attach */ 7112 zfs_detach, /* detach */ 7113 nodev, /* reset */ 7114 &zfs_cb_ops, /* driver operations */ 7115 NULL, /* no bus operations */ 7116 NULL, /* power */ 7117 ddi_quiesce_not_needed, /* quiesce */ 7118 }; 7119 7120 static struct modldrv zfs_modldrv = { 7121 &mod_driverops, 7122 "ZFS storage pool", 7123 &zfs_dev_ops 7124 }; 7125 7126 static struct modlinkage modlinkage = { 7127 MODREV_1, 7128 (void *)&zfs_modlfs, 7129 (void *)&zfs_modldrv, 7130 NULL 7131 }; 7132 7133 static void 7134 zfs_allow_log_destroy(void *arg) 7135 { 7136 char *poolname = arg; 7137 strfree(poolname); 7138 } 7139 7140 int 7141 _init(void) 7142 { 7143 int error; 7144 7145 spa_init(FREAD | FWRITE); 7146 zfs_init(); 7147 zvol_init(); 7148 zfs_ioctl_init(); 7149 7150 if ((error = mod_install(&modlinkage)) != 0) { 7151 zvol_fini(); 7152 zfs_fini(); 7153 spa_fini(); 7154 return (error); 7155 } 7156 7157 tsd_create(&zfs_fsyncer_key, NULL); 7158 tsd_create(&rrw_tsd_key, rrw_tsd_destroy); 7159 tsd_create(&zfs_allow_log_key, zfs_allow_log_destroy); 7160 7161 error = ldi_ident_from_mod(&modlinkage, &zfs_li); 7162 ASSERT(error == 0); 7163 mutex_init(&zfs_share_lock, NULL, MUTEX_DEFAULT, NULL); 7164 7165 return (0); 7166 } 7167 7168 int 7169 _fini(void) 7170 { 7171 int error; 7172 7173 if (spa_busy() || zfs_busy() || zvol_busy() || zio_injection_enabled) 7174 return (SET_ERROR(EBUSY)); 7175 7176 if ((error = mod_remove(&modlinkage)) != 0) 7177 return (error); 7178 7179 zvol_fini(); 7180 zfs_fini(); 7181 spa_fini(); 7182 if (zfs_nfsshare_inited) 7183 (void) ddi_modclose(nfs_mod); 7184 if (zfs_smbshare_inited) 7185 (void) ddi_modclose(smbsrv_mod); 7186 if (zfs_nfsshare_inited || zfs_smbshare_inited) 7187 (void) ddi_modclose(sharefs_mod); 7188 7189 tsd_destroy(&zfs_fsyncer_key); 7190 ldi_ident_release(zfs_li); 7191 zfs_li = NULL; 7192 mutex_destroy(&zfs_share_lock); 7193 7194 return (error); 7195 } 7196 7197 int 7198 _info(struct modinfo *modinfop) 7199 { 7200 return (mod_info(&modlinkage, modinfop)); 7201 } 7202