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 * Copyright (c) 2011-2012 Pawel Jakub Dawidek. All rights reserved. 25 * Portions Copyright 2011 Martin Matuska 26 * Copyright 2015, OmniTI Computer Consulting, Inc. All rights reserved. 27 * Copyright 2016 Nexenta Systems, Inc. All rights reserved. 28 * Copyright 2019 Joyent, Inc. 29 * Copyright (c) 2011, 2017 by Delphix. All rights reserved. 30 * Copyright (c) 2013 by Saso Kiselkov. All rights reserved. 31 * Copyright (c) 2013 Steven Hartland. All rights reserved. 32 * Copyright (c) 2014 Integros [integros.com] 33 * Copyright 2016 Toomas Soome <tsoome@me.com> 34 * Copyright (c) 2017, loli10K <ezomori.nozomu@gmail.com>. All rights reserved. 35 * Copyright 2017 RackTop Systems. 36 * Copyright (c) 2017, Datto, Inc. All rights reserved. 37 */ 38 39 /* 40 * ZFS ioctls. 41 * 42 * This file handles the ioctls to /dev/zfs, used for configuring ZFS storage 43 * pools and filesystems, e.g. with /sbin/zfs and /sbin/zpool. 44 * 45 * There are two ways that we handle ioctls: the legacy way where almost 46 * all of the logic is in the ioctl callback, and the new way where most 47 * of the marshalling is handled in the common entry point, zfsdev_ioctl(). 48 * 49 * Non-legacy ioctls should be registered by calling 50 * zfs_ioctl_register() from zfs_ioctl_init(). The ioctl is invoked 51 * from userland by lzc_ioctl(). 52 * 53 * The registration arguments are as follows: 54 * 55 * const char *name 56 * The name of the ioctl. This is used for history logging. If the 57 * ioctl returns successfully (the callback returns 0), and allow_log 58 * is true, then a history log entry will be recorded with the input & 59 * output nvlists. The log entry can be printed with "zpool history -i". 60 * 61 * zfs_ioc_t ioc 62 * The ioctl request number, which userland will pass to ioctl(2). 63 * The ioctl numbers can change from release to release, because 64 * the caller (libzfs) must be matched to the kernel. 65 * 66 * zfs_secpolicy_func_t *secpolicy 67 * This function will be called before the zfs_ioc_func_t, to 68 * determine if this operation is permitted. It should return EPERM 69 * on failure, and 0 on success. Checks include determining if the 70 * dataset is visible in this zone, and if the user has either all 71 * zfs privileges in the zone (SYS_MOUNT), or has been granted permission 72 * to do this operation on this dataset with "zfs allow". 73 * 74 * zfs_ioc_namecheck_t namecheck 75 * This specifies what to expect in the zfs_cmd_t:zc_name -- a pool 76 * name, a dataset name, or nothing. If the name is not well-formed, 77 * the ioctl will fail and the callback will not be called. 78 * Therefore, the callback can assume that the name is well-formed 79 * (e.g. is null-terminated, doesn't have more than one '@' character, 80 * doesn't have invalid characters). 81 * 82 * zfs_ioc_poolcheck_t pool_check 83 * This specifies requirements on the pool state. If the pool does 84 * not meet them (is suspended or is readonly), the ioctl will fail 85 * and the callback will not be called. If any checks are specified 86 * (i.e. it is not POOL_CHECK_NONE), namecheck must not be NO_NAME. 87 * Multiple checks can be or-ed together (e.g. POOL_CHECK_SUSPENDED | 88 * POOL_CHECK_READONLY). 89 * 90 * boolean_t smush_outnvlist 91 * If smush_outnvlist is true, then the output is presumed to be a 92 * list of errors, and it will be "smushed" down to fit into the 93 * caller's buffer, by removing some entries and replacing them with a 94 * single "N_MORE_ERRORS" entry indicating how many were removed. See 95 * nvlist_smush() for details. If smush_outnvlist is false, and the 96 * outnvlist does not fit into the userland-provided buffer, then the 97 * ioctl will fail with ENOMEM. 98 * 99 * zfs_ioc_func_t *func 100 * The callback function that will perform the operation. 101 * 102 * The callback should return 0 on success, or an error number on 103 * failure. If the function fails, the userland ioctl will return -1, 104 * and errno will be set to the callback's return value. The callback 105 * will be called with the following arguments: 106 * 107 * const char *name 108 * The name of the pool or dataset to operate on, from 109 * zfs_cmd_t:zc_name. The 'namecheck' argument specifies the 110 * expected type (pool, dataset, or none). 111 * 112 * nvlist_t *innvl 113 * The input nvlist, deserialized from zfs_cmd_t:zc_nvlist_src. Or 114 * NULL if no input nvlist was provided. Changes to this nvlist are 115 * ignored. If the input nvlist could not be deserialized, the 116 * ioctl will fail and the callback will not be called. 117 * 118 * nvlist_t *outnvl 119 * The output nvlist, initially empty. The callback can fill it in, 120 * and it will be returned to userland by serializing it into 121 * zfs_cmd_t:zc_nvlist_dst. If it is non-empty, and serialization 122 * fails (e.g. because the caller didn't supply a large enough 123 * buffer), then the overall ioctl will fail. See the 124 * 'smush_nvlist' argument above for additional behaviors. 125 * 126 * There are two typical uses of the output nvlist: 127 * - To return state, e.g. property values. In this case, 128 * smush_outnvlist should be false. If the buffer was not large 129 * enough, the caller will reallocate a larger buffer and try 130 * the ioctl again. 131 * 132 * - To return multiple errors from an ioctl which makes on-disk 133 * changes. In this case, smush_outnvlist should be true. 134 * Ioctls which make on-disk modifications should generally not 135 * use the outnvl if they succeed, because the caller can not 136 * distinguish between the operation failing, and 137 * deserialization failing. 138 */ 139 140 #include <sys/types.h> 141 #include <sys/param.h> 142 #include <sys/errno.h> 143 #include <sys/uio.h> 144 #include <sys/buf.h> 145 #include <sys/modctl.h> 146 #include <sys/open.h> 147 #include <sys/file.h> 148 #include <sys/kmem.h> 149 #include <sys/conf.h> 150 #include <sys/cmn_err.h> 151 #include <sys/stat.h> 152 #include <sys/zfs_ioctl.h> 153 #include <sys/zfs_vfsops.h> 154 #include <sys/zfs_znode.h> 155 #include <sys/zap.h> 156 #include <sys/spa.h> 157 #include <sys/spa_impl.h> 158 #include <sys/vdev.h> 159 #include <sys/priv_impl.h> 160 #include <sys/dmu.h> 161 #include <sys/dsl_dir.h> 162 #include <sys/dsl_dataset.h> 163 #include <sys/dsl_prop.h> 164 #include <sys/dsl_deleg.h> 165 #include <sys/dmu_objset.h> 166 #include <sys/dmu_impl.h> 167 #include <sys/dmu_tx.h> 168 #include <sys/ddi.h> 169 #include <sys/sunddi.h> 170 #include <sys/sunldi.h> 171 #include <sys/policy.h> 172 #include <sys/zone.h> 173 #include <sys/nvpair.h> 174 #include <sys/pathname.h> 175 #include <sys/mount.h> 176 #include <sys/sdt.h> 177 #include <sys/fs/zfs.h> 178 #include <sys/zfs_ctldir.h> 179 #include <sys/zfs_dir.h> 180 #include <sys/zfs_onexit.h> 181 #include <sys/zvol.h> 182 #include <sys/dsl_scan.h> 183 #include <sharefs/share.h> 184 #include <sys/dmu_objset.h> 185 #include <sys/dmu_recv.h> 186 #include <sys/dmu_send.h> 187 #include <sys/dsl_destroy.h> 188 #include <sys/dsl_bookmark.h> 189 #include <sys/dsl_userhold.h> 190 #include <sys/zfeature.h> 191 #include <sys/zcp.h> 192 #include <sys/zio_checksum.h> 193 #include <sys/vdev_removal.h> 194 #include <sys/vdev_impl.h> 195 #include <sys/vdev_initialize.h> 196 #include <sys/vdev_trim.h> 197 #include <sys/dsl_crypt.h> 198 199 #include "zfs_namecheck.h" 200 #include "zfs_prop.h" 201 #include "zfs_deleg.h" 202 #include "zfs_comutil.h" 203 204 #include "lua.h" 205 #include "lauxlib.h" 206 207 extern struct modlfs zfs_modlfs; 208 209 extern void zfs_init(void); 210 extern void zfs_fini(void); 211 212 ldi_ident_t zfs_li = NULL; 213 dev_info_t *zfs_dip; 214 215 uint_t zfs_fsyncer_key; 216 extern uint_t rrw_tsd_key; 217 static uint_t zfs_allow_log_key; 218 219 typedef int zfs_ioc_legacy_func_t(zfs_cmd_t *); 220 typedef int zfs_ioc_func_t(const char *, nvlist_t *, nvlist_t *); 221 typedef int zfs_secpolicy_func_t(zfs_cmd_t *, nvlist_t *, cred_t *); 222 223 typedef enum { 224 NO_NAME, 225 POOL_NAME, 226 DATASET_NAME 227 } zfs_ioc_namecheck_t; 228 229 typedef enum { 230 POOL_CHECK_NONE = 1 << 0, 231 POOL_CHECK_SUSPENDED = 1 << 1, 232 POOL_CHECK_READONLY = 1 << 2, 233 } zfs_ioc_poolcheck_t; 234 235 typedef struct zfs_ioc_vec { 236 zfs_ioc_legacy_func_t *zvec_legacy_func; 237 zfs_ioc_func_t *zvec_func; 238 zfs_secpolicy_func_t *zvec_secpolicy; 239 zfs_ioc_namecheck_t zvec_namecheck; 240 boolean_t zvec_allow_log; 241 zfs_ioc_poolcheck_t zvec_pool_check; 242 boolean_t zvec_smush_outnvlist; 243 const char *zvec_name; 244 } zfs_ioc_vec_t; 245 246 /* This array is indexed by zfs_userquota_prop_t */ 247 static const char *userquota_perms[] = { 248 ZFS_DELEG_PERM_USERUSED, 249 ZFS_DELEG_PERM_USERQUOTA, 250 ZFS_DELEG_PERM_GROUPUSED, 251 ZFS_DELEG_PERM_GROUPQUOTA, 252 ZFS_DELEG_PERM_USEROBJUSED, 253 ZFS_DELEG_PERM_USEROBJQUOTA, 254 ZFS_DELEG_PERM_GROUPOBJUSED, 255 ZFS_DELEG_PERM_GROUPOBJQUOTA, 256 ZFS_DELEG_PERM_PROJECTUSED, 257 ZFS_DELEG_PERM_PROJECTQUOTA, 258 ZFS_DELEG_PERM_PROJECTOBJUSED, 259 ZFS_DELEG_PERM_PROJECTOBJQUOTA, 260 }; 261 262 static int zfs_ioc_userspace_upgrade(zfs_cmd_t *zc); 263 static int zfs_ioc_id_quota_upgrade(zfs_cmd_t *zc); 264 static int zfs_check_settable(const char *name, nvpair_t *property, 265 cred_t *cr); 266 static int zfs_check_clearable(char *dataset, nvlist_t *props, 267 nvlist_t **errors); 268 static int zfs_fill_zplprops_root(uint64_t, nvlist_t *, nvlist_t *, 269 boolean_t *); 270 int zfs_set_prop_nvlist(const char *, zprop_source_t, nvlist_t *, nvlist_t *); 271 static int get_nvlist(uint64_t nvl, uint64_t size, int iflag, nvlist_t **nvp); 272 273 static int zfs_prop_activate_feature(spa_t *spa, spa_feature_t feature); 274 275 /* _NOTE(PRINTFLIKE(4)) - this is printf-like, but lint is too whiney */ 276 void 277 __dprintf(const char *file, const char *func, int line, const char *fmt, ...) 278 { 279 const char *newfile; 280 char buf[512]; 281 va_list adx; 282 283 /* 284 * Get rid of annoying "../common/" prefix to filename. 285 */ 286 newfile = strrchr(file, '/'); 287 if (newfile != NULL) { 288 newfile = newfile + 1; /* Get rid of leading / */ 289 } else { 290 newfile = file; 291 } 292 293 va_start(adx, fmt); 294 (void) vsnprintf(buf, sizeof (buf), fmt, adx); 295 va_end(adx); 296 297 /* 298 * To get this data, use the zfs-dprintf probe as so: 299 * dtrace -q -n 'zfs-dprintf \ 300 * /stringof(arg0) == "dbuf.c"/ \ 301 * {printf("%s: %s", stringof(arg1), stringof(arg3))}' 302 * arg0 = file name 303 * arg1 = function name 304 * arg2 = line number 305 * arg3 = message 306 */ 307 DTRACE_PROBE4(zfs__dprintf, 308 char *, newfile, char *, func, int, line, char *, buf); 309 } 310 311 static void 312 history_str_free(char *buf) 313 { 314 kmem_free(buf, HIS_MAX_RECORD_LEN); 315 } 316 317 static char * 318 history_str_get(zfs_cmd_t *zc) 319 { 320 char *buf; 321 322 if (zc->zc_history == 0) 323 return (NULL); 324 325 buf = kmem_alloc(HIS_MAX_RECORD_LEN, KM_SLEEP); 326 if (copyinstr((void *)(uintptr_t)zc->zc_history, 327 buf, HIS_MAX_RECORD_LEN, NULL) != 0) { 328 history_str_free(buf); 329 return (NULL); 330 } 331 332 buf[HIS_MAX_RECORD_LEN -1] = '\0'; 333 334 return (buf); 335 } 336 337 /* 338 * Check to see if the named dataset is currently defined as bootable 339 */ 340 static boolean_t 341 zfs_is_bootfs(const char *name) 342 { 343 objset_t *os; 344 345 if (dmu_objset_hold(name, FTAG, &os) == 0) { 346 boolean_t ret; 347 ret = (dmu_objset_id(os) == spa_bootfs(dmu_objset_spa(os))); 348 dmu_objset_rele(os, FTAG); 349 return (ret); 350 } 351 return (B_FALSE); 352 } 353 354 /* 355 * Return non-zero if the spa version is less than requested version. 356 */ 357 static int 358 zfs_earlier_version(const char *name, int version) 359 { 360 spa_t *spa; 361 362 if (spa_open(name, &spa, FTAG) == 0) { 363 if (spa_version(spa) < version) { 364 spa_close(spa, FTAG); 365 return (1); 366 } 367 spa_close(spa, FTAG); 368 } 369 return (0); 370 } 371 372 /* 373 * Return TRUE if the ZPL version is less than requested version. 374 */ 375 static boolean_t 376 zpl_earlier_version(const char *name, int version) 377 { 378 objset_t *os; 379 boolean_t rc = B_TRUE; 380 381 if (dmu_objset_hold(name, FTAG, &os) == 0) { 382 uint64_t zplversion; 383 384 if (dmu_objset_type(os) != DMU_OST_ZFS) { 385 dmu_objset_rele(os, FTAG); 386 return (B_TRUE); 387 } 388 /* XXX reading from non-owned objset */ 389 if (zfs_get_zplprop(os, ZFS_PROP_VERSION, &zplversion) == 0) 390 rc = zplversion < version; 391 dmu_objset_rele(os, FTAG); 392 } 393 return (rc); 394 } 395 396 static void 397 zfs_log_history(zfs_cmd_t *zc) 398 { 399 spa_t *spa; 400 char *buf; 401 402 if ((buf = history_str_get(zc)) == NULL) 403 return; 404 405 if (spa_open(zc->zc_name, &spa, FTAG) == 0) { 406 if (spa_version(spa) >= SPA_VERSION_ZPOOL_HISTORY) 407 (void) spa_history_log(spa, buf); 408 spa_close(spa, FTAG); 409 } 410 history_str_free(buf); 411 } 412 413 /* 414 * Policy for top-level read operations (list pools). Requires no privileges, 415 * and can be used in the local zone, as there is no associated dataset. 416 */ 417 /* ARGSUSED */ 418 static int 419 zfs_secpolicy_none(zfs_cmd_t *zc, nvlist_t *innvl, cred_t *cr) 420 { 421 return (0); 422 } 423 424 /* 425 * Policy for dataset read operations (list children, get statistics). Requires 426 * no privileges, but must be visible in the local zone. 427 */ 428 /* ARGSUSED */ 429 static int 430 zfs_secpolicy_read(zfs_cmd_t *zc, nvlist_t *innvl, cred_t *cr) 431 { 432 if (INGLOBALZONE(curproc) || 433 zone_dataset_visible(zc->zc_name, NULL)) 434 return (0); 435 436 return (SET_ERROR(ENOENT)); 437 } 438 439 static int 440 zfs_dozonecheck_impl(const char *dataset, uint64_t zoned, cred_t *cr) 441 { 442 int writable = 1; 443 444 /* 445 * The dataset must be visible by this zone -- check this first 446 * so they don't see EPERM on something they shouldn't know about. 447 */ 448 if (!INGLOBALZONE(curproc) && 449 !zone_dataset_visible(dataset, &writable)) 450 return (SET_ERROR(ENOENT)); 451 452 if (INGLOBALZONE(curproc)) { 453 /* 454 * If the fs is zoned, only root can access it from the 455 * global zone. 456 */ 457 if (secpolicy_zfs(cr) && zoned) 458 return (SET_ERROR(EPERM)); 459 } else { 460 /* 461 * If we are in a local zone, the 'zoned' property must be set. 462 */ 463 if (!zoned) 464 return (SET_ERROR(EPERM)); 465 466 /* must be writable by this zone */ 467 if (!writable) 468 return (SET_ERROR(EPERM)); 469 } 470 return (0); 471 } 472 473 static int 474 zfs_dozonecheck(const char *dataset, cred_t *cr) 475 { 476 uint64_t zoned; 477 478 if (dsl_prop_get_integer(dataset, "zoned", &zoned, NULL)) 479 return (SET_ERROR(ENOENT)); 480 481 return (zfs_dozonecheck_impl(dataset, zoned, cr)); 482 } 483 484 static int 485 zfs_dozonecheck_ds(const char *dataset, dsl_dataset_t *ds, cred_t *cr) 486 { 487 uint64_t zoned; 488 489 if (dsl_prop_get_int_ds(ds, "zoned", &zoned)) 490 return (SET_ERROR(ENOENT)); 491 492 return (zfs_dozonecheck_impl(dataset, zoned, cr)); 493 } 494 495 static int 496 zfs_secpolicy_write_perms_ds(const char *name, dsl_dataset_t *ds, 497 const char *perm, cred_t *cr) 498 { 499 int error; 500 501 error = zfs_dozonecheck_ds(name, ds, cr); 502 if (error == 0) { 503 error = secpolicy_zfs(cr); 504 if (error != 0) 505 error = dsl_deleg_access_impl(ds, perm, cr); 506 } 507 return (error); 508 } 509 510 static int 511 zfs_secpolicy_write_perms(const char *name, const char *perm, cred_t *cr) 512 { 513 int error; 514 dsl_dataset_t *ds; 515 dsl_pool_t *dp; 516 517 /* 518 * First do a quick check for root in the global zone, which 519 * is allowed to do all write_perms. This ensures that zfs_ioc_* 520 * will get to handle nonexistent datasets. 521 */ 522 if (INGLOBALZONE(curproc) && secpolicy_zfs(cr) == 0) 523 return (0); 524 525 error = dsl_pool_hold(name, FTAG, &dp); 526 if (error != 0) 527 return (error); 528 529 error = dsl_dataset_hold(dp, name, FTAG, &ds); 530 if (error != 0) { 531 dsl_pool_rele(dp, FTAG); 532 return (error); 533 } 534 535 error = zfs_secpolicy_write_perms_ds(name, ds, perm, cr); 536 537 dsl_dataset_rele(ds, FTAG); 538 dsl_pool_rele(dp, FTAG); 539 return (error); 540 } 541 542 /* 543 * Policy for setting the security label property. 544 * 545 * Returns 0 for success, non-zero for access and other errors. 546 */ 547 static int 548 zfs_set_slabel_policy(const char *name, char *strval, cred_t *cr) 549 { 550 char ds_hexsl[MAXNAMELEN]; 551 bslabel_t ds_sl, new_sl; 552 boolean_t new_default = FALSE; 553 uint64_t zoned; 554 int needed_priv = -1; 555 int error; 556 557 /* First get the existing dataset label. */ 558 error = dsl_prop_get(name, zfs_prop_to_name(ZFS_PROP_MLSLABEL), 559 1, sizeof (ds_hexsl), &ds_hexsl, NULL); 560 if (error != 0) 561 return (SET_ERROR(EPERM)); 562 563 if (strcasecmp(strval, ZFS_MLSLABEL_DEFAULT) == 0) 564 new_default = TRUE; 565 566 /* The label must be translatable */ 567 if (!new_default && (hexstr_to_label(strval, &new_sl) != 0)) 568 return (SET_ERROR(EINVAL)); 569 570 /* 571 * In a non-global zone, disallow attempts to set a label that 572 * doesn't match that of the zone; otherwise no other checks 573 * are needed. 574 */ 575 if (!INGLOBALZONE(curproc)) { 576 if (new_default || !blequal(&new_sl, CR_SL(CRED()))) 577 return (SET_ERROR(EPERM)); 578 return (0); 579 } 580 581 /* 582 * For global-zone datasets (i.e., those whose zoned property is 583 * "off", verify that the specified new label is valid for the 584 * global zone. 585 */ 586 if (dsl_prop_get_integer(name, 587 zfs_prop_to_name(ZFS_PROP_ZONED), &zoned, NULL)) 588 return (SET_ERROR(EPERM)); 589 if (!zoned) { 590 if (zfs_check_global_label(name, strval) != 0) 591 return (SET_ERROR(EPERM)); 592 } 593 594 /* 595 * If the existing dataset label is nondefault, check if the 596 * dataset is mounted (label cannot be changed while mounted). 597 * Get the zfsvfs; if there isn't one, then the dataset isn't 598 * mounted (or isn't a dataset, doesn't exist, ...). 599 */ 600 if (strcasecmp(ds_hexsl, ZFS_MLSLABEL_DEFAULT) != 0) { 601 objset_t *os; 602 static char *setsl_tag = "setsl_tag"; 603 604 /* 605 * Try to own the dataset; abort if there is any error, 606 * (e.g., already mounted, in use, or other error). 607 */ 608 error = dmu_objset_own(name, DMU_OST_ZFS, B_TRUE, B_TRUE, 609 setsl_tag, &os); 610 if (error != 0) 611 return (SET_ERROR(EPERM)); 612 613 dmu_objset_disown(os, B_TRUE, setsl_tag); 614 615 if (new_default) { 616 needed_priv = PRIV_FILE_DOWNGRADE_SL; 617 goto out_check; 618 } 619 620 if (hexstr_to_label(strval, &new_sl) != 0) 621 return (SET_ERROR(EPERM)); 622 623 if (blstrictdom(&ds_sl, &new_sl)) 624 needed_priv = PRIV_FILE_DOWNGRADE_SL; 625 else if (blstrictdom(&new_sl, &ds_sl)) 626 needed_priv = PRIV_FILE_UPGRADE_SL; 627 } else { 628 /* dataset currently has a default label */ 629 if (!new_default) 630 needed_priv = PRIV_FILE_UPGRADE_SL; 631 } 632 633 out_check: 634 if (needed_priv != -1) 635 return (PRIV_POLICY(cr, needed_priv, B_FALSE, EPERM, NULL)); 636 return (0); 637 } 638 639 static int 640 zfs_secpolicy_setprop(const char *dsname, zfs_prop_t prop, nvpair_t *propval, 641 cred_t *cr) 642 { 643 char *strval; 644 645 /* 646 * Check permissions for special properties. 647 */ 648 switch (prop) { 649 case ZFS_PROP_ZONED: 650 /* 651 * Disallow setting of 'zoned' from within a local zone. 652 */ 653 if (!INGLOBALZONE(curproc)) 654 return (SET_ERROR(EPERM)); 655 break; 656 657 case ZFS_PROP_QUOTA: 658 case ZFS_PROP_FILESYSTEM_LIMIT: 659 case ZFS_PROP_SNAPSHOT_LIMIT: 660 if (!INGLOBALZONE(curproc)) { 661 uint64_t zoned; 662 char setpoint[ZFS_MAX_DATASET_NAME_LEN]; 663 /* 664 * Unprivileged users are allowed to modify the 665 * limit on things *under* (ie. contained by) 666 * the thing they own. 667 */ 668 if (dsl_prop_get_integer(dsname, "zoned", &zoned, 669 setpoint)) 670 return (SET_ERROR(EPERM)); 671 if (!zoned || strlen(dsname) <= strlen(setpoint)) 672 return (SET_ERROR(EPERM)); 673 } 674 break; 675 676 case ZFS_PROP_MLSLABEL: 677 if (!is_system_labeled()) 678 return (SET_ERROR(EPERM)); 679 680 if (nvpair_value_string(propval, &strval) == 0) { 681 int err; 682 683 err = zfs_set_slabel_policy(dsname, strval, CRED()); 684 if (err != 0) 685 return (err); 686 } 687 break; 688 } 689 690 return (zfs_secpolicy_write_perms(dsname, zfs_prop_to_name(prop), cr)); 691 } 692 693 /* ARGSUSED */ 694 static int 695 zfs_secpolicy_set_fsacl(zfs_cmd_t *zc, nvlist_t *innvl, cred_t *cr) 696 { 697 int error; 698 699 error = zfs_dozonecheck(zc->zc_name, cr); 700 if (error != 0) 701 return (error); 702 703 /* 704 * permission to set permissions will be evaluated later in 705 * dsl_deleg_can_allow() 706 */ 707 return (0); 708 } 709 710 /* ARGSUSED */ 711 static int 712 zfs_secpolicy_rollback(zfs_cmd_t *zc, nvlist_t *innvl, cred_t *cr) 713 { 714 return (zfs_secpolicy_write_perms(zc->zc_name, 715 ZFS_DELEG_PERM_ROLLBACK, cr)); 716 } 717 718 /* ARGSUSED */ 719 static int 720 zfs_secpolicy_send(zfs_cmd_t *zc, nvlist_t *innvl, cred_t *cr) 721 { 722 dsl_pool_t *dp; 723 dsl_dataset_t *ds; 724 char *cp; 725 int error; 726 727 /* 728 * Generate the current snapshot name from the given objsetid, then 729 * use that name for the secpolicy/zone checks. 730 */ 731 cp = strchr(zc->zc_name, '@'); 732 if (cp == NULL) 733 return (SET_ERROR(EINVAL)); 734 error = dsl_pool_hold(zc->zc_name, FTAG, &dp); 735 if (error != 0) 736 return (error); 737 738 error = dsl_dataset_hold_obj(dp, zc->zc_sendobj, FTAG, &ds); 739 if (error != 0) { 740 dsl_pool_rele(dp, FTAG); 741 return (error); 742 } 743 744 dsl_dataset_name(ds, zc->zc_name); 745 746 error = zfs_secpolicy_write_perms_ds(zc->zc_name, ds, 747 ZFS_DELEG_PERM_SEND, cr); 748 dsl_dataset_rele(ds, FTAG); 749 dsl_pool_rele(dp, FTAG); 750 751 return (error); 752 } 753 754 /* ARGSUSED */ 755 static int 756 zfs_secpolicy_send_new(zfs_cmd_t *zc, nvlist_t *innvl, cred_t *cr) 757 { 758 return (zfs_secpolicy_write_perms(zc->zc_name, 759 ZFS_DELEG_PERM_SEND, cr)); 760 } 761 762 /* ARGSUSED */ 763 static int 764 zfs_secpolicy_deleg_share(zfs_cmd_t *zc, nvlist_t *innvl, cred_t *cr) 765 { 766 vnode_t *vp; 767 int error; 768 769 if ((error = lookupname(zc->zc_value, UIO_SYSSPACE, 770 NO_FOLLOW, NULL, &vp)) != 0) 771 return (error); 772 773 /* Now make sure mntpnt and dataset are ZFS */ 774 775 if (vp->v_vfsp->vfs_fstype != zfsfstype || 776 (strcmp((char *)refstr_value(vp->v_vfsp->vfs_resource), 777 zc->zc_name) != 0)) { 778 VN_RELE(vp); 779 return (SET_ERROR(EPERM)); 780 } 781 782 VN_RELE(vp); 783 return (dsl_deleg_access(zc->zc_name, 784 ZFS_DELEG_PERM_SHARE, cr)); 785 } 786 787 int 788 zfs_secpolicy_share(zfs_cmd_t *zc, nvlist_t *innvl, cred_t *cr) 789 { 790 if (!INGLOBALZONE(curproc)) 791 return (SET_ERROR(EPERM)); 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 (!INGLOBALZONE(curproc)) 804 return (SET_ERROR(EPERM)); 805 806 if (secpolicy_smb(cr) == 0) { 807 return (0); 808 } else { 809 return (zfs_secpolicy_deleg_share(zc, innvl, cr)); 810 } 811 } 812 813 static int 814 zfs_get_parent(const char *datasetname, char *parent, int parentsize) 815 { 816 char *cp; 817 818 /* 819 * Remove the @bla or /bla from the end of the name to get the parent. 820 */ 821 (void) strncpy(parent, datasetname, parentsize); 822 cp = strrchr(parent, '@'); 823 if (cp != NULL) { 824 cp[0] = '\0'; 825 } else { 826 cp = strrchr(parent, '/'); 827 if (cp == NULL) 828 return (SET_ERROR(ENOENT)); 829 cp[0] = '\0'; 830 } 831 832 return (0); 833 } 834 835 int 836 zfs_secpolicy_destroy_perms(const char *name, cred_t *cr) 837 { 838 int error; 839 840 if ((error = zfs_secpolicy_write_perms(name, 841 ZFS_DELEG_PERM_MOUNT, cr)) != 0) 842 return (error); 843 844 return (zfs_secpolicy_write_perms(name, ZFS_DELEG_PERM_DESTROY, cr)); 845 } 846 847 /* ARGSUSED */ 848 static int 849 zfs_secpolicy_destroy(zfs_cmd_t *zc, nvlist_t *innvl, cred_t *cr) 850 { 851 return (zfs_secpolicy_destroy_perms(zc->zc_name, cr)); 852 } 853 854 /* 855 * Destroying snapshots with delegated permissions requires 856 * descendant mount and destroy permissions. 857 */ 858 /* ARGSUSED */ 859 static int 860 zfs_secpolicy_destroy_snaps(zfs_cmd_t *zc, nvlist_t *innvl, cred_t *cr) 861 { 862 nvlist_t *snaps; 863 nvpair_t *pair, *nextpair; 864 int error = 0; 865 866 if (nvlist_lookup_nvlist(innvl, "snaps", &snaps) != 0) 867 return (SET_ERROR(EINVAL)); 868 for (pair = nvlist_next_nvpair(snaps, NULL); pair != NULL; 869 pair = nextpair) { 870 nextpair = nvlist_next_nvpair(snaps, pair); 871 error = zfs_secpolicy_destroy_perms(nvpair_name(pair), cr); 872 if (error == ENOENT) { 873 /* 874 * Ignore any snapshots that don't exist (we consider 875 * them "already destroyed"). Remove the name from the 876 * nvl here in case the snapshot is created between 877 * now and when we try to destroy it (in which case 878 * we don't want to destroy it since we haven't 879 * checked for permission). 880 */ 881 fnvlist_remove_nvpair(snaps, pair); 882 error = 0; 883 } 884 if (error != 0) 885 break; 886 } 887 888 return (error); 889 } 890 891 int 892 zfs_secpolicy_rename_perms(const char *from, const char *to, cred_t *cr) 893 { 894 char parentname[ZFS_MAX_DATASET_NAME_LEN]; 895 int error; 896 897 if ((error = zfs_secpolicy_write_perms(from, 898 ZFS_DELEG_PERM_RENAME, cr)) != 0) 899 return (error); 900 901 if ((error = zfs_secpolicy_write_perms(from, 902 ZFS_DELEG_PERM_MOUNT, cr)) != 0) 903 return (error); 904 905 if ((error = zfs_get_parent(to, parentname, 906 sizeof (parentname))) != 0) 907 return (error); 908 909 if ((error = zfs_secpolicy_write_perms(parentname, 910 ZFS_DELEG_PERM_CREATE, cr)) != 0) 911 return (error); 912 913 if ((error = zfs_secpolicy_write_perms(parentname, 914 ZFS_DELEG_PERM_MOUNT, cr)) != 0) 915 return (error); 916 917 return (error); 918 } 919 920 /* ARGSUSED */ 921 static int 922 zfs_secpolicy_rename(zfs_cmd_t *zc, nvlist_t *innvl, cred_t *cr) 923 { 924 return (zfs_secpolicy_rename_perms(zc->zc_name, zc->zc_value, cr)); 925 } 926 927 /* ARGSUSED */ 928 static int 929 zfs_secpolicy_promote(zfs_cmd_t *zc, nvlist_t *innvl, cred_t *cr) 930 { 931 dsl_pool_t *dp; 932 dsl_dataset_t *clone; 933 int error; 934 935 error = zfs_secpolicy_write_perms(zc->zc_name, 936 ZFS_DELEG_PERM_PROMOTE, cr); 937 if (error != 0) 938 return (error); 939 940 error = dsl_pool_hold(zc->zc_name, FTAG, &dp); 941 if (error != 0) 942 return (error); 943 944 error = dsl_dataset_hold(dp, zc->zc_name, FTAG, &clone); 945 946 if (error == 0) { 947 char parentname[ZFS_MAX_DATASET_NAME_LEN]; 948 dsl_dataset_t *origin = NULL; 949 dsl_dir_t *dd; 950 dd = clone->ds_dir; 951 952 error = dsl_dataset_hold_obj(dd->dd_pool, 953 dsl_dir_phys(dd)->dd_origin_obj, FTAG, &origin); 954 if (error != 0) { 955 dsl_dataset_rele(clone, FTAG); 956 dsl_pool_rele(dp, FTAG); 957 return (error); 958 } 959 960 error = zfs_secpolicy_write_perms_ds(zc->zc_name, clone, 961 ZFS_DELEG_PERM_MOUNT, cr); 962 963 dsl_dataset_name(origin, parentname); 964 if (error == 0) { 965 error = zfs_secpolicy_write_perms_ds(parentname, origin, 966 ZFS_DELEG_PERM_PROMOTE, cr); 967 } 968 dsl_dataset_rele(clone, FTAG); 969 dsl_dataset_rele(origin, FTAG); 970 } 971 dsl_pool_rele(dp, FTAG); 972 return (error); 973 } 974 975 /* ARGSUSED */ 976 static int 977 zfs_secpolicy_recv(zfs_cmd_t *zc, nvlist_t *innvl, cred_t *cr) 978 { 979 int error; 980 981 if ((error = zfs_secpolicy_write_perms(zc->zc_name, 982 ZFS_DELEG_PERM_RECEIVE, cr)) != 0) 983 return (error); 984 985 if ((error = zfs_secpolicy_write_perms(zc->zc_name, 986 ZFS_DELEG_PERM_MOUNT, cr)) != 0) 987 return (error); 988 989 return (zfs_secpolicy_write_perms(zc->zc_name, 990 ZFS_DELEG_PERM_CREATE, cr)); 991 } 992 993 int 994 zfs_secpolicy_snapshot_perms(const char *name, cred_t *cr) 995 { 996 return (zfs_secpolicy_write_perms(name, 997 ZFS_DELEG_PERM_SNAPSHOT, cr)); 998 } 999 1000 /* 1001 * Check for permission to create each snapshot in the nvlist. 1002 */ 1003 /* ARGSUSED */ 1004 static int 1005 zfs_secpolicy_snapshot(zfs_cmd_t *zc, nvlist_t *innvl, cred_t *cr) 1006 { 1007 nvlist_t *snaps; 1008 int error = 0; 1009 nvpair_t *pair; 1010 1011 if (nvlist_lookup_nvlist(innvl, "snaps", &snaps) != 0) 1012 return (SET_ERROR(EINVAL)); 1013 for (pair = nvlist_next_nvpair(snaps, NULL); pair != NULL; 1014 pair = nvlist_next_nvpair(snaps, pair)) { 1015 char *name = nvpair_name(pair); 1016 char *atp = strchr(name, '@'); 1017 1018 if (atp == NULL) { 1019 error = SET_ERROR(EINVAL); 1020 break; 1021 } 1022 *atp = '\0'; 1023 error = zfs_secpolicy_snapshot_perms(name, cr); 1024 *atp = '@'; 1025 if (error != 0) 1026 break; 1027 } 1028 return (error); 1029 } 1030 1031 /* 1032 * Check for permission to create each snapshot in the nvlist. 1033 */ 1034 /* ARGSUSED */ 1035 static int 1036 zfs_secpolicy_bookmark(zfs_cmd_t *zc, nvlist_t *innvl, cred_t *cr) 1037 { 1038 int error = 0; 1039 1040 for (nvpair_t *pair = nvlist_next_nvpair(innvl, NULL); 1041 pair != NULL; pair = nvlist_next_nvpair(innvl, pair)) { 1042 char *name = nvpair_name(pair); 1043 char *hashp = strchr(name, '#'); 1044 1045 if (hashp == NULL) { 1046 error = SET_ERROR(EINVAL); 1047 break; 1048 } 1049 *hashp = '\0'; 1050 error = zfs_secpolicy_write_perms(name, 1051 ZFS_DELEG_PERM_BOOKMARK, cr); 1052 *hashp = '#'; 1053 if (error != 0) 1054 break; 1055 } 1056 return (error); 1057 } 1058 1059 /* ARGSUSED */ 1060 static int 1061 zfs_secpolicy_remap(zfs_cmd_t *zc, nvlist_t *innvl, cred_t *cr) 1062 { 1063 return (zfs_secpolicy_write_perms(zc->zc_name, 1064 ZFS_DELEG_PERM_REMAP, cr)); 1065 } 1066 1067 /* ARGSUSED */ 1068 static int 1069 zfs_secpolicy_destroy_bookmarks(zfs_cmd_t *zc, nvlist_t *innvl, cred_t *cr) 1070 { 1071 nvpair_t *pair, *nextpair; 1072 int error = 0; 1073 1074 for (pair = nvlist_next_nvpair(innvl, NULL); pair != NULL; 1075 pair = nextpair) { 1076 char *name = nvpair_name(pair); 1077 char *hashp = strchr(name, '#'); 1078 nextpair = nvlist_next_nvpair(innvl, pair); 1079 1080 if (hashp == NULL) { 1081 error = SET_ERROR(EINVAL); 1082 break; 1083 } 1084 1085 *hashp = '\0'; 1086 error = zfs_secpolicy_write_perms(name, 1087 ZFS_DELEG_PERM_DESTROY, cr); 1088 *hashp = '#'; 1089 if (error == ENOENT) { 1090 /* 1091 * Ignore any filesystems that don't exist (we consider 1092 * their bookmarks "already destroyed"). Remove 1093 * the name from the nvl here in case the filesystem 1094 * is created between now and when we try to destroy 1095 * the bookmark (in which case we don't want to 1096 * destroy it since we haven't checked for permission). 1097 */ 1098 fnvlist_remove_nvpair(innvl, pair); 1099 error = 0; 1100 } 1101 if (error != 0) 1102 break; 1103 } 1104 1105 return (error); 1106 } 1107 1108 /* ARGSUSED */ 1109 static int 1110 zfs_secpolicy_log_history(zfs_cmd_t *zc, nvlist_t *innvl, cred_t *cr) 1111 { 1112 /* 1113 * Even root must have a proper TSD so that we know what pool 1114 * to log to. 1115 */ 1116 if (tsd_get(zfs_allow_log_key) == NULL) 1117 return (SET_ERROR(EPERM)); 1118 return (0); 1119 } 1120 1121 static int 1122 zfs_secpolicy_create_clone(zfs_cmd_t *zc, nvlist_t *innvl, cred_t *cr) 1123 { 1124 char parentname[ZFS_MAX_DATASET_NAME_LEN]; 1125 int error; 1126 char *origin; 1127 1128 if ((error = zfs_get_parent(zc->zc_name, parentname, 1129 sizeof (parentname))) != 0) 1130 return (error); 1131 1132 if (nvlist_lookup_string(innvl, "origin", &origin) == 0 && 1133 (error = zfs_secpolicy_write_perms(origin, 1134 ZFS_DELEG_PERM_CLONE, cr)) != 0) 1135 return (error); 1136 1137 if ((error = zfs_secpolicy_write_perms(parentname, 1138 ZFS_DELEG_PERM_CREATE, cr)) != 0) 1139 return (error); 1140 1141 return (zfs_secpolicy_write_perms(parentname, 1142 ZFS_DELEG_PERM_MOUNT, cr)); 1143 } 1144 1145 /* 1146 * Policy for pool operations - create/destroy pools, add vdevs, etc. Requires 1147 * SYS_CONFIG privilege, which is not available in a local zone. 1148 */ 1149 /* ARGSUSED */ 1150 static int 1151 zfs_secpolicy_config(zfs_cmd_t *zc, nvlist_t *innvl, cred_t *cr) 1152 { 1153 if (secpolicy_sys_config(cr, B_FALSE) != 0) 1154 return (SET_ERROR(EPERM)); 1155 1156 return (0); 1157 } 1158 1159 /* 1160 * Policy for object to name lookups. 1161 */ 1162 /* ARGSUSED */ 1163 static int 1164 zfs_secpolicy_diff(zfs_cmd_t *zc, nvlist_t *innvl, cred_t *cr) 1165 { 1166 int error; 1167 1168 if ((error = secpolicy_sys_config(cr, B_FALSE)) == 0) 1169 return (0); 1170 1171 error = zfs_secpolicy_write_perms(zc->zc_name, ZFS_DELEG_PERM_DIFF, cr); 1172 return (error); 1173 } 1174 1175 /* 1176 * Policy for fault injection. Requires all privileges. 1177 */ 1178 /* ARGSUSED */ 1179 static int 1180 zfs_secpolicy_inject(zfs_cmd_t *zc, nvlist_t *innvl, cred_t *cr) 1181 { 1182 return (secpolicy_zinject(cr)); 1183 } 1184 1185 /* ARGSUSED */ 1186 static int 1187 zfs_secpolicy_inherit_prop(zfs_cmd_t *zc, nvlist_t *innvl, cred_t *cr) 1188 { 1189 zfs_prop_t prop = zfs_name_to_prop(zc->zc_value); 1190 1191 if (prop == ZPROP_INVAL) { 1192 if (!zfs_prop_user(zc->zc_value)) 1193 return (SET_ERROR(EINVAL)); 1194 return (zfs_secpolicy_write_perms(zc->zc_name, 1195 ZFS_DELEG_PERM_USERPROP, cr)); 1196 } else { 1197 return (zfs_secpolicy_setprop(zc->zc_name, prop, 1198 NULL, cr)); 1199 } 1200 } 1201 1202 static int 1203 zfs_secpolicy_userspace_one(zfs_cmd_t *zc, nvlist_t *innvl, cred_t *cr) 1204 { 1205 int err = zfs_secpolicy_read(zc, innvl, cr); 1206 if (err) 1207 return (err); 1208 1209 if (zc->zc_objset_type >= ZFS_NUM_USERQUOTA_PROPS) 1210 return (SET_ERROR(EINVAL)); 1211 1212 if (zc->zc_value[0] == 0) { 1213 /* 1214 * They are asking about a posix uid/gid. If it's 1215 * themself, allow it. 1216 */ 1217 if (zc->zc_objset_type == ZFS_PROP_USERUSED || 1218 zc->zc_objset_type == ZFS_PROP_USERQUOTA || 1219 zc->zc_objset_type == ZFS_PROP_USEROBJUSED || 1220 zc->zc_objset_type == ZFS_PROP_USEROBJQUOTA) { 1221 if (zc->zc_guid == crgetuid(cr)) 1222 return (0); 1223 } else if (zc->zc_objset_type == ZFS_PROP_GROUPUSED || 1224 zc->zc_objset_type == ZFS_PROP_GROUPQUOTA || 1225 zc->zc_objset_type == ZFS_PROP_GROUPOBJUSED || 1226 zc->zc_objset_type == ZFS_PROP_GROUPOBJQUOTA) { 1227 if (groupmember(zc->zc_guid, cr)) 1228 return (0); 1229 } 1230 /* else is for project quota/used */ 1231 } 1232 1233 return (zfs_secpolicy_write_perms(zc->zc_name, 1234 userquota_perms[zc->zc_objset_type], cr)); 1235 } 1236 1237 static int 1238 zfs_secpolicy_userspace_many(zfs_cmd_t *zc, nvlist_t *innvl, cred_t *cr) 1239 { 1240 int err = zfs_secpolicy_read(zc, innvl, cr); 1241 if (err) 1242 return (err); 1243 1244 if (zc->zc_objset_type >= ZFS_NUM_USERQUOTA_PROPS) 1245 return (SET_ERROR(EINVAL)); 1246 1247 return (zfs_secpolicy_write_perms(zc->zc_name, 1248 userquota_perms[zc->zc_objset_type], cr)); 1249 } 1250 1251 /* ARGSUSED */ 1252 static int 1253 zfs_secpolicy_userspace_upgrade(zfs_cmd_t *zc, nvlist_t *innvl, cred_t *cr) 1254 { 1255 return (zfs_secpolicy_setprop(zc->zc_name, ZFS_PROP_VERSION, 1256 NULL, cr)); 1257 } 1258 1259 /* ARGSUSED */ 1260 static int 1261 zfs_secpolicy_hold(zfs_cmd_t *zc, nvlist_t *innvl, cred_t *cr) 1262 { 1263 nvpair_t *pair; 1264 nvlist_t *holds; 1265 int error; 1266 1267 error = nvlist_lookup_nvlist(innvl, "holds", &holds); 1268 if (error != 0) 1269 return (SET_ERROR(EINVAL)); 1270 1271 for (pair = nvlist_next_nvpair(holds, NULL); pair != NULL; 1272 pair = nvlist_next_nvpair(holds, pair)) { 1273 char fsname[ZFS_MAX_DATASET_NAME_LEN]; 1274 error = dmu_fsname(nvpair_name(pair), fsname); 1275 if (error != 0) 1276 return (error); 1277 error = zfs_secpolicy_write_perms(fsname, 1278 ZFS_DELEG_PERM_HOLD, cr); 1279 if (error != 0) 1280 return (error); 1281 } 1282 return (0); 1283 } 1284 1285 /* ARGSUSED */ 1286 static int 1287 zfs_secpolicy_release(zfs_cmd_t *zc, nvlist_t *innvl, cred_t *cr) 1288 { 1289 nvpair_t *pair; 1290 int error; 1291 1292 for (pair = nvlist_next_nvpair(innvl, NULL); pair != NULL; 1293 pair = nvlist_next_nvpair(innvl, pair)) { 1294 char fsname[ZFS_MAX_DATASET_NAME_LEN]; 1295 error = dmu_fsname(nvpair_name(pair), fsname); 1296 if (error != 0) 1297 return (error); 1298 error = zfs_secpolicy_write_perms(fsname, 1299 ZFS_DELEG_PERM_RELEASE, cr); 1300 if (error != 0) 1301 return (error); 1302 } 1303 return (0); 1304 } 1305 1306 /* ARGSUSED */ 1307 static int 1308 zfs_secpolicy_load_key(zfs_cmd_t *zc, nvlist_t *innvl, cred_t *cr) 1309 { 1310 return (zfs_secpolicy_write_perms(zc->zc_name, 1311 ZFS_DELEG_PERM_LOAD_KEY, cr)); 1312 } 1313 1314 /* ARGSUSED */ 1315 static int 1316 zfs_secpolicy_change_key(zfs_cmd_t *zc, nvlist_t *innvl, cred_t *cr) 1317 { 1318 return (zfs_secpolicy_write_perms(zc->zc_name, 1319 ZFS_DELEG_PERM_CHANGE_KEY, cr)); 1320 } 1321 1322 /* 1323 * Policy for allowing temporary snapshots to be taken or released 1324 */ 1325 static int 1326 zfs_secpolicy_tmp_snapshot(zfs_cmd_t *zc, nvlist_t *innvl, cred_t *cr) 1327 { 1328 /* 1329 * A temporary snapshot is the same as a snapshot, 1330 * hold, destroy and release all rolled into one. 1331 * Delegated diff alone is sufficient that we allow this. 1332 */ 1333 int error; 1334 1335 if ((error = zfs_secpolicy_write_perms(zc->zc_name, 1336 ZFS_DELEG_PERM_DIFF, cr)) == 0) 1337 return (0); 1338 1339 error = zfs_secpolicy_snapshot_perms(zc->zc_name, cr); 1340 if (error == 0) 1341 error = zfs_secpolicy_hold(zc, innvl, cr); 1342 if (error == 0) 1343 error = zfs_secpolicy_release(zc, innvl, cr); 1344 if (error == 0) 1345 error = zfs_secpolicy_destroy(zc, innvl, cr); 1346 return (error); 1347 } 1348 1349 /* 1350 * Returns the nvlist as specified by the user in the zfs_cmd_t. 1351 */ 1352 static int 1353 get_nvlist(uint64_t nvl, uint64_t size, int iflag, nvlist_t **nvp) 1354 { 1355 char *packed; 1356 int error; 1357 nvlist_t *list = NULL; 1358 1359 /* 1360 * Read in and unpack the user-supplied nvlist. 1361 */ 1362 if (size == 0) 1363 return (SET_ERROR(EINVAL)); 1364 1365 packed = kmem_alloc(size, KM_SLEEP); 1366 1367 if ((error = ddi_copyin((void *)(uintptr_t)nvl, packed, size, 1368 iflag)) != 0) { 1369 kmem_free(packed, size); 1370 return (SET_ERROR(EFAULT)); 1371 } 1372 1373 if ((error = nvlist_unpack(packed, size, &list, 0)) != 0) { 1374 kmem_free(packed, size); 1375 return (error); 1376 } 1377 1378 kmem_free(packed, size); 1379 1380 *nvp = list; 1381 return (0); 1382 } 1383 1384 /* 1385 * Reduce the size of this nvlist until it can be serialized in 'max' bytes. 1386 * Entries will be removed from the end of the nvlist, and one int32 entry 1387 * named "N_MORE_ERRORS" will be added indicating how many entries were 1388 * removed. 1389 */ 1390 static int 1391 nvlist_smush(nvlist_t *errors, size_t max) 1392 { 1393 size_t size; 1394 1395 size = fnvlist_size(errors); 1396 1397 if (size > max) { 1398 nvpair_t *more_errors; 1399 int n = 0; 1400 1401 if (max < 1024) 1402 return (SET_ERROR(ENOMEM)); 1403 1404 fnvlist_add_int32(errors, ZPROP_N_MORE_ERRORS, 0); 1405 more_errors = nvlist_prev_nvpair(errors, NULL); 1406 1407 do { 1408 nvpair_t *pair = nvlist_prev_nvpair(errors, 1409 more_errors); 1410 fnvlist_remove_nvpair(errors, pair); 1411 n++; 1412 size = fnvlist_size(errors); 1413 } while (size > max); 1414 1415 fnvlist_remove_nvpair(errors, more_errors); 1416 fnvlist_add_int32(errors, ZPROP_N_MORE_ERRORS, n); 1417 ASSERT3U(fnvlist_size(errors), <=, max); 1418 } 1419 1420 return (0); 1421 } 1422 1423 static int 1424 put_nvlist(zfs_cmd_t *zc, nvlist_t *nvl) 1425 { 1426 char *packed = NULL; 1427 int error = 0; 1428 size_t size; 1429 1430 size = fnvlist_size(nvl); 1431 1432 if (size > zc->zc_nvlist_dst_size) { 1433 error = SET_ERROR(ENOMEM); 1434 } else { 1435 packed = fnvlist_pack(nvl, &size); 1436 if (ddi_copyout(packed, (void *)(uintptr_t)zc->zc_nvlist_dst, 1437 size, zc->zc_iflags) != 0) 1438 error = SET_ERROR(EFAULT); 1439 fnvlist_pack_free(packed, size); 1440 } 1441 1442 zc->zc_nvlist_dst_size = size; 1443 zc->zc_nvlist_dst_filled = B_TRUE; 1444 return (error); 1445 } 1446 1447 int 1448 getzfsvfs_impl(objset_t *os, zfsvfs_t **zfvp) 1449 { 1450 int error = 0; 1451 if (dmu_objset_type(os) != DMU_OST_ZFS) { 1452 return (SET_ERROR(EINVAL)); 1453 } 1454 1455 mutex_enter(&os->os_user_ptr_lock); 1456 *zfvp = dmu_objset_get_user(os); 1457 if (*zfvp) { 1458 VFS_HOLD((*zfvp)->z_vfs); 1459 } else { 1460 error = SET_ERROR(ESRCH); 1461 } 1462 mutex_exit(&os->os_user_ptr_lock); 1463 return (error); 1464 } 1465 1466 int 1467 getzfsvfs(const char *dsname, zfsvfs_t **zfvp) 1468 { 1469 objset_t *os; 1470 int error; 1471 1472 error = dmu_objset_hold(dsname, FTAG, &os); 1473 if (error != 0) 1474 return (error); 1475 1476 error = getzfsvfs_impl(os, zfvp); 1477 dmu_objset_rele(os, FTAG); 1478 return (error); 1479 } 1480 1481 /* 1482 * Find a zfsvfs_t for a mounted filesystem, or create our own, in which 1483 * case its z_vfs will be NULL, and it will be opened as the owner. 1484 * If 'writer' is set, the z_teardown_lock will be held for RW_WRITER, 1485 * which prevents all vnode ops from running. 1486 */ 1487 static int 1488 zfsvfs_hold(const char *name, void *tag, zfsvfs_t **zfvp, boolean_t writer) 1489 { 1490 int error = 0; 1491 1492 if (getzfsvfs(name, zfvp) != 0) 1493 error = zfsvfs_create(name, B_FALSE, zfvp); 1494 if (error == 0) { 1495 rrm_enter(&(*zfvp)->z_teardown_lock, (writer) ? RW_WRITER : 1496 RW_READER, tag); 1497 if ((*zfvp)->z_unmounted) { 1498 /* 1499 * XXX we could probably try again, since the unmounting 1500 * thread should be just about to disassociate the 1501 * objset from the zfsvfs. 1502 */ 1503 rrm_exit(&(*zfvp)->z_teardown_lock, tag); 1504 return (SET_ERROR(EBUSY)); 1505 } 1506 } 1507 return (error); 1508 } 1509 1510 static void 1511 zfsvfs_rele(zfsvfs_t *zfsvfs, void *tag) 1512 { 1513 rrm_exit(&zfsvfs->z_teardown_lock, tag); 1514 1515 if (zfsvfs->z_vfs) { 1516 VFS_RELE(zfsvfs->z_vfs); 1517 } else { 1518 dmu_objset_disown(zfsvfs->z_os, B_TRUE, zfsvfs); 1519 zfsvfs_free(zfsvfs); 1520 } 1521 } 1522 1523 static int 1524 zfs_ioc_pool_create(zfs_cmd_t *zc) 1525 { 1526 int error; 1527 nvlist_t *config, *props = NULL; 1528 nvlist_t *rootprops = NULL; 1529 nvlist_t *zplprops = NULL; 1530 char *spa_name = zc->zc_name; 1531 dsl_crypto_params_t *dcp = NULL; 1532 1533 if (error = get_nvlist(zc->zc_nvlist_conf, zc->zc_nvlist_conf_size, 1534 zc->zc_iflags, &config)) 1535 return (error); 1536 1537 if (zc->zc_nvlist_src_size != 0 && (error = 1538 get_nvlist(zc->zc_nvlist_src, zc->zc_nvlist_src_size, 1539 zc->zc_iflags, &props))) { 1540 nvlist_free(config); 1541 return (error); 1542 } 1543 1544 if (props) { 1545 nvlist_t *nvl = NULL; 1546 nvlist_t *hidden_args = NULL; 1547 uint64_t version = SPA_VERSION; 1548 char *tname; 1549 1550 (void) nvlist_lookup_uint64(props, 1551 zpool_prop_to_name(ZPOOL_PROP_VERSION), &version); 1552 if (!SPA_VERSION_IS_SUPPORTED(version)) { 1553 error = SET_ERROR(EINVAL); 1554 goto pool_props_bad; 1555 } 1556 (void) nvlist_lookup_nvlist(props, ZPOOL_ROOTFS_PROPS, &nvl); 1557 if (nvl) { 1558 error = nvlist_dup(nvl, &rootprops, KM_SLEEP); 1559 if (error != 0) { 1560 nvlist_free(config); 1561 nvlist_free(props); 1562 return (error); 1563 } 1564 (void) nvlist_remove_all(props, ZPOOL_ROOTFS_PROPS); 1565 } 1566 1567 (void) nvlist_lookup_nvlist(props, ZPOOL_HIDDEN_ARGS, 1568 &hidden_args); 1569 error = dsl_crypto_params_create_nvlist(DCP_CMD_NONE, 1570 rootprops, hidden_args, &dcp); 1571 if (error != 0) { 1572 nvlist_free(config); 1573 nvlist_free(props); 1574 return (error); 1575 } 1576 (void) nvlist_remove_all(props, ZPOOL_HIDDEN_ARGS); 1577 1578 VERIFY(nvlist_alloc(&zplprops, NV_UNIQUE_NAME, KM_SLEEP) == 0); 1579 error = zfs_fill_zplprops_root(version, rootprops, 1580 zplprops, NULL); 1581 if (error != 0) 1582 goto pool_props_bad; 1583 1584 if (nvlist_lookup_string(props, 1585 zpool_prop_to_name(ZPOOL_PROP_TNAME), &tname) == 0) 1586 spa_name = tname; 1587 } 1588 1589 error = spa_create(zc->zc_name, config, props, zplprops, dcp); 1590 1591 /* 1592 * Set the remaining root properties 1593 */ 1594 if (!error && (error = zfs_set_prop_nvlist(spa_name, 1595 ZPROP_SRC_LOCAL, rootprops, NULL)) != 0) 1596 (void) spa_destroy(spa_name); 1597 1598 pool_props_bad: 1599 nvlist_free(rootprops); 1600 nvlist_free(zplprops); 1601 nvlist_free(config); 1602 nvlist_free(props); 1603 dsl_crypto_params_free(dcp, !!error); 1604 1605 return (error); 1606 } 1607 1608 static int 1609 zfs_ioc_pool_destroy(zfs_cmd_t *zc) 1610 { 1611 int error; 1612 zfs_log_history(zc); 1613 error = spa_destroy(zc->zc_name); 1614 if (error == 0) 1615 zvol_remove_minors(zc->zc_name); 1616 return (error); 1617 } 1618 1619 static int 1620 zfs_ioc_pool_import(zfs_cmd_t *zc) 1621 { 1622 nvlist_t *config, *props = NULL; 1623 uint64_t guid; 1624 int error; 1625 1626 if ((error = get_nvlist(zc->zc_nvlist_conf, zc->zc_nvlist_conf_size, 1627 zc->zc_iflags, &config)) != 0) 1628 return (error); 1629 1630 if (zc->zc_nvlist_src_size != 0 && (error = 1631 get_nvlist(zc->zc_nvlist_src, zc->zc_nvlist_src_size, 1632 zc->zc_iflags, &props))) { 1633 nvlist_free(config); 1634 return (error); 1635 } 1636 1637 if (nvlist_lookup_uint64(config, ZPOOL_CONFIG_POOL_GUID, &guid) != 0 || 1638 guid != zc->zc_guid) 1639 error = SET_ERROR(EINVAL); 1640 else 1641 error = spa_import(zc->zc_name, config, props, zc->zc_cookie); 1642 1643 if (zc->zc_nvlist_dst != 0) { 1644 int err; 1645 1646 if ((err = put_nvlist(zc, config)) != 0) 1647 error = err; 1648 } 1649 1650 nvlist_free(config); 1651 1652 nvlist_free(props); 1653 1654 return (error); 1655 } 1656 1657 static int 1658 zfs_ioc_pool_export(zfs_cmd_t *zc) 1659 { 1660 int error; 1661 boolean_t force = (boolean_t)zc->zc_cookie; 1662 boolean_t hardforce = (boolean_t)zc->zc_guid; 1663 1664 zfs_log_history(zc); 1665 error = spa_export(zc->zc_name, NULL, force, hardforce); 1666 if (error == 0) 1667 zvol_remove_minors(zc->zc_name); 1668 return (error); 1669 } 1670 1671 static int 1672 zfs_ioc_pool_configs(zfs_cmd_t *zc) 1673 { 1674 nvlist_t *configs; 1675 int error; 1676 1677 if ((configs = spa_all_configs(&zc->zc_cookie)) == NULL) 1678 return (SET_ERROR(EEXIST)); 1679 1680 error = put_nvlist(zc, configs); 1681 1682 nvlist_free(configs); 1683 1684 return (error); 1685 } 1686 1687 /* 1688 * inputs: 1689 * zc_name name of the pool 1690 * 1691 * outputs: 1692 * zc_cookie real errno 1693 * zc_nvlist_dst config nvlist 1694 * zc_nvlist_dst_size size of config nvlist 1695 */ 1696 static int 1697 zfs_ioc_pool_stats(zfs_cmd_t *zc) 1698 { 1699 nvlist_t *config; 1700 int error; 1701 int ret = 0; 1702 1703 error = spa_get_stats(zc->zc_name, &config, zc->zc_value, 1704 sizeof (zc->zc_value)); 1705 1706 if (config != NULL) { 1707 ret = put_nvlist(zc, config); 1708 nvlist_free(config); 1709 1710 /* 1711 * The config may be present even if 'error' is non-zero. 1712 * In this case we return success, and preserve the real errno 1713 * in 'zc_cookie'. 1714 */ 1715 zc->zc_cookie = error; 1716 } else { 1717 ret = error; 1718 } 1719 1720 return (ret); 1721 } 1722 1723 /* 1724 * Try to import the given pool, returning pool stats as appropriate so that 1725 * user land knows which devices are available and overall pool health. 1726 */ 1727 static int 1728 zfs_ioc_pool_tryimport(zfs_cmd_t *zc) 1729 { 1730 nvlist_t *tryconfig, *config; 1731 int error; 1732 1733 if ((error = get_nvlist(zc->zc_nvlist_conf, zc->zc_nvlist_conf_size, 1734 zc->zc_iflags, &tryconfig)) != 0) 1735 return (error); 1736 1737 config = spa_tryimport(tryconfig); 1738 1739 nvlist_free(tryconfig); 1740 1741 if (config == NULL) 1742 return (SET_ERROR(EINVAL)); 1743 1744 error = put_nvlist(zc, config); 1745 nvlist_free(config); 1746 1747 return (error); 1748 } 1749 1750 /* 1751 * inputs: 1752 * zc_name name of the pool 1753 * zc_cookie scan func (pool_scan_func_t) 1754 * zc_flags scrub pause/resume flag (pool_scrub_cmd_t) 1755 */ 1756 static int 1757 zfs_ioc_pool_scan(zfs_cmd_t *zc) 1758 { 1759 spa_t *spa; 1760 int error; 1761 1762 if ((error = spa_open(zc->zc_name, &spa, FTAG)) != 0) 1763 return (error); 1764 1765 if (zc->zc_flags >= POOL_SCRUB_FLAGS_END) 1766 return (SET_ERROR(EINVAL)); 1767 1768 if (zc->zc_flags == POOL_SCRUB_PAUSE) 1769 error = spa_scrub_pause_resume(spa, POOL_SCRUB_PAUSE); 1770 else if (zc->zc_cookie == POOL_SCAN_NONE) 1771 error = spa_scan_stop(spa); 1772 else 1773 error = spa_scan(spa, zc->zc_cookie); 1774 1775 spa_close(spa, FTAG); 1776 1777 return (error); 1778 } 1779 1780 static int 1781 zfs_ioc_pool_freeze(zfs_cmd_t *zc) 1782 { 1783 spa_t *spa; 1784 int error; 1785 1786 error = spa_open(zc->zc_name, &spa, FTAG); 1787 if (error == 0) { 1788 spa_freeze(spa); 1789 spa_close(spa, FTAG); 1790 } 1791 return (error); 1792 } 1793 1794 static int 1795 zfs_ioc_pool_upgrade(zfs_cmd_t *zc) 1796 { 1797 spa_t *spa; 1798 int error; 1799 1800 if ((error = spa_open(zc->zc_name, &spa, FTAG)) != 0) 1801 return (error); 1802 1803 if (zc->zc_cookie < spa_version(spa) || 1804 !SPA_VERSION_IS_SUPPORTED(zc->zc_cookie)) { 1805 spa_close(spa, FTAG); 1806 return (SET_ERROR(EINVAL)); 1807 } 1808 1809 spa_upgrade(spa, zc->zc_cookie); 1810 spa_close(spa, FTAG); 1811 1812 return (error); 1813 } 1814 1815 static int 1816 zfs_ioc_pool_get_history(zfs_cmd_t *zc) 1817 { 1818 spa_t *spa; 1819 char *hist_buf; 1820 uint64_t size; 1821 int error; 1822 1823 if ((size = zc->zc_history_len) == 0) 1824 return (SET_ERROR(EINVAL)); 1825 1826 if ((error = spa_open(zc->zc_name, &spa, FTAG)) != 0) 1827 return (error); 1828 1829 if (spa_version(spa) < SPA_VERSION_ZPOOL_HISTORY) { 1830 spa_close(spa, FTAG); 1831 return (SET_ERROR(ENOTSUP)); 1832 } 1833 1834 hist_buf = kmem_alloc(size, KM_SLEEP); 1835 if ((error = spa_history_get(spa, &zc->zc_history_offset, 1836 &zc->zc_history_len, hist_buf)) == 0) { 1837 error = ddi_copyout(hist_buf, 1838 (void *)(uintptr_t)zc->zc_history, 1839 zc->zc_history_len, zc->zc_iflags); 1840 } 1841 1842 spa_close(spa, FTAG); 1843 kmem_free(hist_buf, size); 1844 return (error); 1845 } 1846 1847 static int 1848 zfs_ioc_pool_reguid(zfs_cmd_t *zc) 1849 { 1850 spa_t *spa; 1851 int error; 1852 1853 error = spa_open(zc->zc_name, &spa, FTAG); 1854 if (error == 0) { 1855 error = spa_change_guid(spa); 1856 spa_close(spa, FTAG); 1857 } 1858 return (error); 1859 } 1860 1861 static int 1862 zfs_ioc_dsobj_to_dsname(zfs_cmd_t *zc) 1863 { 1864 return (dsl_dsobj_to_dsname(zc->zc_name, zc->zc_obj, zc->zc_value)); 1865 } 1866 1867 /* 1868 * inputs: 1869 * zc_name name of filesystem 1870 * zc_obj object to find 1871 * 1872 * outputs: 1873 * zc_value name of object 1874 */ 1875 static int 1876 zfs_ioc_obj_to_path(zfs_cmd_t *zc) 1877 { 1878 objset_t *os; 1879 int error; 1880 1881 /* XXX reading from objset not owned */ 1882 if ((error = dmu_objset_hold_flags(zc->zc_name, B_TRUE, 1883 FTAG, &os)) != 0) 1884 return (error); 1885 if (dmu_objset_type(os) != DMU_OST_ZFS) { 1886 dmu_objset_rele_flags(os, B_TRUE, FTAG); 1887 return (SET_ERROR(EINVAL)); 1888 } 1889 error = zfs_obj_to_path(os, zc->zc_obj, zc->zc_value, 1890 sizeof (zc->zc_value)); 1891 dmu_objset_rele_flags(os, B_TRUE, FTAG); 1892 1893 return (error); 1894 } 1895 1896 /* 1897 * inputs: 1898 * zc_name name of filesystem 1899 * zc_obj object to find 1900 * 1901 * outputs: 1902 * zc_stat stats on object 1903 * zc_value path to object 1904 */ 1905 static int 1906 zfs_ioc_obj_to_stats(zfs_cmd_t *zc) 1907 { 1908 objset_t *os; 1909 int error; 1910 1911 /* XXX reading from objset not owned */ 1912 if ((error = dmu_objset_hold_flags(zc->zc_name, B_TRUE, 1913 FTAG, &os)) != 0) 1914 return (error); 1915 if (dmu_objset_type(os) != DMU_OST_ZFS) { 1916 dmu_objset_rele_flags(os, B_TRUE, FTAG); 1917 return (SET_ERROR(EINVAL)); 1918 } 1919 error = zfs_obj_to_stats(os, zc->zc_obj, &zc->zc_stat, zc->zc_value, 1920 sizeof (zc->zc_value)); 1921 dmu_objset_rele_flags(os, B_TRUE, FTAG); 1922 1923 return (error); 1924 } 1925 1926 static int 1927 zfs_ioc_vdev_add(zfs_cmd_t *zc) 1928 { 1929 spa_t *spa; 1930 int error; 1931 nvlist_t *config, **l2cache, **spares; 1932 uint_t nl2cache = 0, nspares = 0; 1933 1934 error = spa_open(zc->zc_name, &spa, FTAG); 1935 if (error != 0) 1936 return (error); 1937 1938 error = get_nvlist(zc->zc_nvlist_conf, zc->zc_nvlist_conf_size, 1939 zc->zc_iflags, &config); 1940 (void) nvlist_lookup_nvlist_array(config, ZPOOL_CONFIG_L2CACHE, 1941 &l2cache, &nl2cache); 1942 1943 (void) nvlist_lookup_nvlist_array(config, ZPOOL_CONFIG_SPARES, 1944 &spares, &nspares); 1945 1946 /* 1947 * A root pool with concatenated devices is not supported. 1948 * Thus, can not add a device to a root pool. 1949 * 1950 * Intent log device can not be added to a rootpool because 1951 * during mountroot, zil is replayed, a seperated log device 1952 * can not be accessed during the mountroot time. 1953 * 1954 * l2cache and spare devices are ok to be added to a rootpool. 1955 */ 1956 if (spa_bootfs(spa) != 0 && nl2cache == 0 && nspares == 0) { 1957 nvlist_free(config); 1958 spa_close(spa, FTAG); 1959 return (SET_ERROR(EDOM)); 1960 } 1961 1962 if (error == 0) { 1963 error = spa_vdev_add(spa, config); 1964 nvlist_free(config); 1965 } 1966 spa_close(spa, FTAG); 1967 return (error); 1968 } 1969 1970 /* 1971 * inputs: 1972 * zc_name name of the pool 1973 * zc_guid guid of vdev to remove 1974 * zc_cookie cancel removal 1975 */ 1976 static int 1977 zfs_ioc_vdev_remove(zfs_cmd_t *zc) 1978 { 1979 spa_t *spa; 1980 int error; 1981 1982 error = spa_open(zc->zc_name, &spa, FTAG); 1983 if (error != 0) 1984 return (error); 1985 if (zc->zc_cookie != 0) { 1986 error = spa_vdev_remove_cancel(spa); 1987 } else { 1988 error = spa_vdev_remove(spa, zc->zc_guid, B_FALSE); 1989 } 1990 spa_close(spa, FTAG); 1991 return (error); 1992 } 1993 1994 static int 1995 zfs_ioc_vdev_set_state(zfs_cmd_t *zc) 1996 { 1997 spa_t *spa; 1998 int error; 1999 vdev_state_t newstate = VDEV_STATE_UNKNOWN; 2000 2001 if ((error = spa_open(zc->zc_name, &spa, FTAG)) != 0) 2002 return (error); 2003 switch (zc->zc_cookie) { 2004 case VDEV_STATE_ONLINE: 2005 error = vdev_online(spa, zc->zc_guid, zc->zc_obj, &newstate); 2006 break; 2007 2008 case VDEV_STATE_OFFLINE: 2009 error = vdev_offline(spa, zc->zc_guid, zc->zc_obj); 2010 break; 2011 2012 case VDEV_STATE_FAULTED: 2013 if (zc->zc_obj != VDEV_AUX_ERR_EXCEEDED && 2014 zc->zc_obj != VDEV_AUX_EXTERNAL) 2015 zc->zc_obj = VDEV_AUX_ERR_EXCEEDED; 2016 2017 error = vdev_fault(spa, zc->zc_guid, zc->zc_obj); 2018 break; 2019 2020 case VDEV_STATE_DEGRADED: 2021 if (zc->zc_obj != VDEV_AUX_ERR_EXCEEDED && 2022 zc->zc_obj != VDEV_AUX_EXTERNAL) 2023 zc->zc_obj = VDEV_AUX_ERR_EXCEEDED; 2024 2025 error = vdev_degrade(spa, zc->zc_guid, zc->zc_obj); 2026 break; 2027 2028 default: 2029 error = SET_ERROR(EINVAL); 2030 } 2031 zc->zc_cookie = newstate; 2032 spa_close(spa, FTAG); 2033 return (error); 2034 } 2035 2036 static int 2037 zfs_ioc_vdev_attach(zfs_cmd_t *zc) 2038 { 2039 spa_t *spa; 2040 int replacing = zc->zc_cookie; 2041 nvlist_t *config; 2042 int error; 2043 2044 if ((error = spa_open(zc->zc_name, &spa, FTAG)) != 0) 2045 return (error); 2046 2047 if ((error = get_nvlist(zc->zc_nvlist_conf, zc->zc_nvlist_conf_size, 2048 zc->zc_iflags, &config)) == 0) { 2049 error = spa_vdev_attach(spa, zc->zc_guid, config, replacing); 2050 nvlist_free(config); 2051 } 2052 2053 spa_close(spa, FTAG); 2054 return (error); 2055 } 2056 2057 static int 2058 zfs_ioc_vdev_detach(zfs_cmd_t *zc) 2059 { 2060 spa_t *spa; 2061 int error; 2062 2063 if ((error = spa_open(zc->zc_name, &spa, FTAG)) != 0) 2064 return (error); 2065 2066 error = spa_vdev_detach(spa, zc->zc_guid, 0, B_FALSE); 2067 2068 spa_close(spa, FTAG); 2069 return (error); 2070 } 2071 2072 static int 2073 zfs_ioc_vdev_split(zfs_cmd_t *zc) 2074 { 2075 spa_t *spa; 2076 nvlist_t *config, *props = NULL; 2077 int error; 2078 boolean_t exp = !!(zc->zc_cookie & ZPOOL_EXPORT_AFTER_SPLIT); 2079 2080 if ((error = spa_open(zc->zc_name, &spa, FTAG)) != 0) 2081 return (error); 2082 2083 if (error = get_nvlist(zc->zc_nvlist_conf, zc->zc_nvlist_conf_size, 2084 zc->zc_iflags, &config)) { 2085 spa_close(spa, FTAG); 2086 return (error); 2087 } 2088 2089 if (zc->zc_nvlist_src_size != 0 && (error = 2090 get_nvlist(zc->zc_nvlist_src, zc->zc_nvlist_src_size, 2091 zc->zc_iflags, &props))) { 2092 spa_close(spa, FTAG); 2093 nvlist_free(config); 2094 return (error); 2095 } 2096 2097 error = spa_vdev_split_mirror(spa, zc->zc_string, config, props, exp); 2098 2099 spa_close(spa, FTAG); 2100 2101 nvlist_free(config); 2102 nvlist_free(props); 2103 2104 return (error); 2105 } 2106 2107 static int 2108 zfs_ioc_vdev_setpath(zfs_cmd_t *zc) 2109 { 2110 spa_t *spa; 2111 char *path = zc->zc_value; 2112 uint64_t guid = zc->zc_guid; 2113 int error; 2114 2115 error = spa_open(zc->zc_name, &spa, FTAG); 2116 if (error != 0) 2117 return (error); 2118 2119 error = spa_vdev_setpath(spa, guid, path); 2120 spa_close(spa, FTAG); 2121 return (error); 2122 } 2123 2124 static int 2125 zfs_ioc_vdev_setfru(zfs_cmd_t *zc) 2126 { 2127 spa_t *spa; 2128 char *fru = zc->zc_value; 2129 uint64_t guid = zc->zc_guid; 2130 int error; 2131 2132 error = spa_open(zc->zc_name, &spa, FTAG); 2133 if (error != 0) 2134 return (error); 2135 2136 error = spa_vdev_setfru(spa, guid, fru); 2137 spa_close(spa, FTAG); 2138 return (error); 2139 } 2140 2141 static int 2142 zfs_ioc_objset_stats_impl(zfs_cmd_t *zc, objset_t *os) 2143 { 2144 int error = 0; 2145 nvlist_t *nv; 2146 2147 dmu_objset_fast_stat(os, &zc->zc_objset_stats); 2148 2149 if (zc->zc_nvlist_dst != 0 && 2150 (error = dsl_prop_get_all(os, &nv)) == 0) { 2151 dmu_objset_stats(os, nv); 2152 /* 2153 * NB: zvol_get_stats() will read the objset contents, 2154 * which we aren't supposed to do with a 2155 * DS_MODE_USER hold, because it could be 2156 * inconsistent. So this is a bit of a workaround... 2157 * XXX reading with out owning 2158 */ 2159 if (!zc->zc_objset_stats.dds_inconsistent && 2160 dmu_objset_type(os) == DMU_OST_ZVOL) { 2161 error = zvol_get_stats(os, nv); 2162 if (error == EIO) 2163 return (error); 2164 VERIFY0(error); 2165 } 2166 error = put_nvlist(zc, nv); 2167 nvlist_free(nv); 2168 } 2169 2170 return (error); 2171 } 2172 2173 /* 2174 * inputs: 2175 * zc_name name of filesystem 2176 * zc_nvlist_dst_size size of buffer for property nvlist 2177 * 2178 * outputs: 2179 * zc_objset_stats stats 2180 * zc_nvlist_dst property nvlist 2181 * zc_nvlist_dst_size size of property nvlist 2182 */ 2183 static int 2184 zfs_ioc_objset_stats(zfs_cmd_t *zc) 2185 { 2186 objset_t *os; 2187 int error; 2188 2189 error = dmu_objset_hold(zc->zc_name, FTAG, &os); 2190 if (error == 0) { 2191 error = zfs_ioc_objset_stats_impl(zc, os); 2192 dmu_objset_rele(os, FTAG); 2193 } 2194 2195 return (error); 2196 } 2197 2198 /* 2199 * inputs: 2200 * zc_name name of filesystem 2201 * zc_nvlist_dst_size size of buffer for property nvlist 2202 * 2203 * outputs: 2204 * zc_nvlist_dst received property nvlist 2205 * zc_nvlist_dst_size size of received property nvlist 2206 * 2207 * Gets received properties (distinct from local properties on or after 2208 * SPA_VERSION_RECVD_PROPS) for callers who want to differentiate received from 2209 * local property values. 2210 */ 2211 static int 2212 zfs_ioc_objset_recvd_props(zfs_cmd_t *zc) 2213 { 2214 int error = 0; 2215 nvlist_t *nv; 2216 2217 /* 2218 * Without this check, we would return local property values if the 2219 * caller has not already received properties on or after 2220 * SPA_VERSION_RECVD_PROPS. 2221 */ 2222 if (!dsl_prop_get_hasrecvd(zc->zc_name)) 2223 return (SET_ERROR(ENOTSUP)); 2224 2225 if (zc->zc_nvlist_dst != 0 && 2226 (error = dsl_prop_get_received(zc->zc_name, &nv)) == 0) { 2227 error = put_nvlist(zc, nv); 2228 nvlist_free(nv); 2229 } 2230 2231 return (error); 2232 } 2233 2234 static int 2235 nvl_add_zplprop(objset_t *os, nvlist_t *props, zfs_prop_t prop) 2236 { 2237 uint64_t value; 2238 int error; 2239 2240 /* 2241 * zfs_get_zplprop() will either find a value or give us 2242 * the default value (if there is one). 2243 */ 2244 if ((error = zfs_get_zplprop(os, prop, &value)) != 0) 2245 return (error); 2246 VERIFY(nvlist_add_uint64(props, zfs_prop_to_name(prop), value) == 0); 2247 return (0); 2248 } 2249 2250 /* 2251 * inputs: 2252 * zc_name name of filesystem 2253 * zc_nvlist_dst_size size of buffer for zpl property nvlist 2254 * 2255 * outputs: 2256 * zc_nvlist_dst zpl property nvlist 2257 * zc_nvlist_dst_size size of zpl property nvlist 2258 */ 2259 static int 2260 zfs_ioc_objset_zplprops(zfs_cmd_t *zc) 2261 { 2262 objset_t *os; 2263 int err; 2264 2265 /* XXX reading without owning */ 2266 if (err = dmu_objset_hold(zc->zc_name, FTAG, &os)) 2267 return (err); 2268 2269 dmu_objset_fast_stat(os, &zc->zc_objset_stats); 2270 2271 /* 2272 * NB: nvl_add_zplprop() will read the objset contents, 2273 * which we aren't supposed to do with a DS_MODE_USER 2274 * hold, because it could be inconsistent. 2275 */ 2276 if (zc->zc_nvlist_dst != 0 && 2277 !zc->zc_objset_stats.dds_inconsistent && 2278 dmu_objset_type(os) == DMU_OST_ZFS) { 2279 nvlist_t *nv; 2280 2281 VERIFY(nvlist_alloc(&nv, NV_UNIQUE_NAME, KM_SLEEP) == 0); 2282 if ((err = nvl_add_zplprop(os, nv, ZFS_PROP_VERSION)) == 0 && 2283 (err = nvl_add_zplprop(os, nv, ZFS_PROP_NORMALIZE)) == 0 && 2284 (err = nvl_add_zplprop(os, nv, ZFS_PROP_UTF8ONLY)) == 0 && 2285 (err = nvl_add_zplprop(os, nv, ZFS_PROP_CASE)) == 0) 2286 err = put_nvlist(zc, nv); 2287 nvlist_free(nv); 2288 } else { 2289 err = SET_ERROR(ENOENT); 2290 } 2291 dmu_objset_rele(os, FTAG); 2292 return (err); 2293 } 2294 2295 static boolean_t 2296 dataset_name_hidden(const char *name) 2297 { 2298 /* 2299 * Skip over datasets that are not visible in this zone, 2300 * internal datasets (which have a $ in their name), and 2301 * temporary datasets (which have a % in their name). 2302 */ 2303 if (strchr(name, '$') != NULL) 2304 return (B_TRUE); 2305 if (strchr(name, '%') != NULL) 2306 return (B_TRUE); 2307 if (!INGLOBALZONE(curproc) && !zone_dataset_visible(name, NULL)) 2308 return (B_TRUE); 2309 return (B_FALSE); 2310 } 2311 2312 /* 2313 * inputs: 2314 * zc_name name of filesystem 2315 * zc_cookie zap cursor 2316 * zc_nvlist_dst_size size of buffer for property nvlist 2317 * 2318 * outputs: 2319 * zc_name name of next filesystem 2320 * zc_cookie zap cursor 2321 * zc_objset_stats stats 2322 * zc_nvlist_dst property nvlist 2323 * zc_nvlist_dst_size size of property nvlist 2324 */ 2325 static int 2326 zfs_ioc_dataset_list_next(zfs_cmd_t *zc) 2327 { 2328 objset_t *os; 2329 int error; 2330 char *p; 2331 size_t orig_len = strlen(zc->zc_name); 2332 2333 top: 2334 if (error = dmu_objset_hold(zc->zc_name, FTAG, &os)) { 2335 if (error == ENOENT) 2336 error = SET_ERROR(ESRCH); 2337 return (error); 2338 } 2339 2340 p = strrchr(zc->zc_name, '/'); 2341 if (p == NULL || p[1] != '\0') 2342 (void) strlcat(zc->zc_name, "/", sizeof (zc->zc_name)); 2343 p = zc->zc_name + strlen(zc->zc_name); 2344 2345 do { 2346 error = dmu_dir_list_next(os, 2347 sizeof (zc->zc_name) - (p - zc->zc_name), p, 2348 NULL, &zc->zc_cookie); 2349 if (error == ENOENT) 2350 error = SET_ERROR(ESRCH); 2351 } while (error == 0 && dataset_name_hidden(zc->zc_name)); 2352 dmu_objset_rele(os, FTAG); 2353 2354 /* 2355 * If it's an internal dataset (ie. with a '$' in its name), 2356 * don't try to get stats for it, otherwise we'll return ENOENT. 2357 */ 2358 if (error == 0 && strchr(zc->zc_name, '$') == NULL) { 2359 error = zfs_ioc_objset_stats(zc); /* fill in the stats */ 2360 if (error == ENOENT) { 2361 /* We lost a race with destroy, get the next one. */ 2362 zc->zc_name[orig_len] = '\0'; 2363 goto top; 2364 } 2365 } 2366 return (error); 2367 } 2368 2369 /* 2370 * inputs: 2371 * zc_name name of filesystem 2372 * zc_cookie zap cursor 2373 * zc_nvlist_dst_size size of buffer for property nvlist 2374 * zc_simple when set, only name is requested 2375 * 2376 * outputs: 2377 * zc_name name of next snapshot 2378 * zc_objset_stats stats 2379 * zc_nvlist_dst property nvlist 2380 * zc_nvlist_dst_size size of property nvlist 2381 */ 2382 static int 2383 zfs_ioc_snapshot_list_next(zfs_cmd_t *zc) 2384 { 2385 objset_t *os; 2386 int error; 2387 2388 error = dmu_objset_hold(zc->zc_name, FTAG, &os); 2389 if (error != 0) { 2390 return (error == ENOENT ? ESRCH : error); 2391 } 2392 2393 /* 2394 * A dataset name of maximum length cannot have any snapshots, 2395 * so exit immediately. 2396 */ 2397 if (strlcat(zc->zc_name, "@", sizeof (zc->zc_name)) >= 2398 ZFS_MAX_DATASET_NAME_LEN) { 2399 dmu_objset_rele(os, FTAG); 2400 return (SET_ERROR(ESRCH)); 2401 } 2402 2403 error = dmu_snapshot_list_next(os, 2404 sizeof (zc->zc_name) - strlen(zc->zc_name), 2405 zc->zc_name + strlen(zc->zc_name), &zc->zc_obj, &zc->zc_cookie, 2406 NULL); 2407 2408 if (error == 0 && !zc->zc_simple) { 2409 dsl_dataset_t *ds; 2410 dsl_pool_t *dp = os->os_dsl_dataset->ds_dir->dd_pool; 2411 2412 error = dsl_dataset_hold_obj(dp, zc->zc_obj, FTAG, &ds); 2413 if (error == 0) { 2414 objset_t *ossnap; 2415 2416 error = dmu_objset_from_ds(ds, &ossnap); 2417 if (error == 0) 2418 error = zfs_ioc_objset_stats_impl(zc, ossnap); 2419 dsl_dataset_rele(ds, FTAG); 2420 } 2421 } else if (error == ENOENT) { 2422 error = SET_ERROR(ESRCH); 2423 } 2424 2425 dmu_objset_rele(os, FTAG); 2426 /* if we failed, undo the @ that we tacked on to zc_name */ 2427 if (error != 0) 2428 *strchr(zc->zc_name, '@') = '\0'; 2429 return (error); 2430 } 2431 2432 static int 2433 zfs_prop_set_userquota(const char *dsname, nvpair_t *pair) 2434 { 2435 const char *propname = nvpair_name(pair); 2436 uint64_t *valary; 2437 unsigned int vallen; 2438 const char *domain; 2439 char *dash; 2440 zfs_userquota_prop_t type; 2441 uint64_t rid; 2442 uint64_t quota; 2443 zfsvfs_t *zfsvfs; 2444 int err; 2445 2446 if (nvpair_type(pair) == DATA_TYPE_NVLIST) { 2447 nvlist_t *attrs; 2448 VERIFY(nvpair_value_nvlist(pair, &attrs) == 0); 2449 if (nvlist_lookup_nvpair(attrs, ZPROP_VALUE, 2450 &pair) != 0) 2451 return (SET_ERROR(EINVAL)); 2452 } 2453 2454 /* 2455 * A correctly constructed propname is encoded as 2456 * userquota@<rid>-<domain>. 2457 */ 2458 if ((dash = strchr(propname, '-')) == NULL || 2459 nvpair_value_uint64_array(pair, &valary, &vallen) != 0 || 2460 vallen != 3) 2461 return (SET_ERROR(EINVAL)); 2462 2463 domain = dash + 1; 2464 type = valary[0]; 2465 rid = valary[1]; 2466 quota = valary[2]; 2467 2468 err = zfsvfs_hold(dsname, FTAG, &zfsvfs, B_FALSE); 2469 if (err == 0) { 2470 err = zfs_set_userquota(zfsvfs, type, domain, rid, quota); 2471 zfsvfs_rele(zfsvfs, FTAG); 2472 } 2473 2474 return (err); 2475 } 2476 2477 /* 2478 * If the named property is one that has a special function to set its value, 2479 * return 0 on success and a positive error code on failure; otherwise if it is 2480 * not one of the special properties handled by this function, return -1. 2481 * 2482 * XXX: It would be better for callers of the property interface if we handled 2483 * these special cases in dsl_prop.c (in the dsl layer). 2484 */ 2485 static int 2486 zfs_prop_set_special(const char *dsname, zprop_source_t source, 2487 nvpair_t *pair) 2488 { 2489 const char *propname = nvpair_name(pair); 2490 zfs_prop_t prop = zfs_name_to_prop(propname); 2491 uint64_t intval = 0; 2492 char *strval = NULL; 2493 int err = -1; 2494 2495 if (prop == ZPROP_INVAL) { 2496 if (zfs_prop_userquota(propname)) 2497 return (zfs_prop_set_userquota(dsname, pair)); 2498 return (-1); 2499 } 2500 2501 if (nvpair_type(pair) == DATA_TYPE_NVLIST) { 2502 nvlist_t *attrs; 2503 VERIFY(nvpair_value_nvlist(pair, &attrs) == 0); 2504 VERIFY(nvlist_lookup_nvpair(attrs, ZPROP_VALUE, 2505 &pair) == 0); 2506 } 2507 2508 /* all special properties are numeric except for keylocation */ 2509 if (zfs_prop_get_type(prop) == PROP_TYPE_STRING) { 2510 strval = fnvpair_value_string(pair); 2511 } else { 2512 intval = fnvpair_value_uint64(pair); 2513 } 2514 2515 switch (prop) { 2516 case ZFS_PROP_QUOTA: 2517 err = dsl_dir_set_quota(dsname, source, intval); 2518 break; 2519 case ZFS_PROP_REFQUOTA: 2520 err = dsl_dataset_set_refquota(dsname, source, intval); 2521 break; 2522 case ZFS_PROP_FILESYSTEM_LIMIT: 2523 case ZFS_PROP_SNAPSHOT_LIMIT: 2524 if (intval == UINT64_MAX) { 2525 /* clearing the limit, just do it */ 2526 err = 0; 2527 } else { 2528 err = dsl_dir_activate_fs_ss_limit(dsname); 2529 } 2530 /* 2531 * Set err to -1 to force the zfs_set_prop_nvlist code down the 2532 * default path to set the value in the nvlist. 2533 */ 2534 if (err == 0) 2535 err = -1; 2536 break; 2537 case ZFS_PROP_KEYLOCATION: 2538 err = dsl_crypto_can_set_keylocation(dsname, strval); 2539 2540 /* 2541 * Set err to -1 to force the zfs_set_prop_nvlist code down the 2542 * default path to set the value in the nvlist. 2543 */ 2544 if (err == 0) 2545 err = -1; 2546 break; 2547 case ZFS_PROP_RESERVATION: 2548 err = dsl_dir_set_reservation(dsname, source, intval); 2549 break; 2550 case ZFS_PROP_REFRESERVATION: 2551 err = dsl_dataset_set_refreservation(dsname, source, intval); 2552 break; 2553 case ZFS_PROP_VOLSIZE: 2554 err = zvol_set_volsize(dsname, intval); 2555 break; 2556 case ZFS_PROP_VERSION: 2557 { 2558 zfsvfs_t *zfsvfs; 2559 2560 if ((err = zfsvfs_hold(dsname, FTAG, &zfsvfs, B_TRUE)) != 0) 2561 break; 2562 2563 err = zfs_set_version(zfsvfs, intval); 2564 zfsvfs_rele(zfsvfs, FTAG); 2565 2566 if (err == 0 && intval >= ZPL_VERSION_USERSPACE) { 2567 zfs_cmd_t *zc; 2568 2569 zc = kmem_zalloc(sizeof (zfs_cmd_t), KM_SLEEP); 2570 (void) strcpy(zc->zc_name, dsname); 2571 (void) zfs_ioc_userspace_upgrade(zc); 2572 (void) zfs_ioc_id_quota_upgrade(zc); 2573 kmem_free(zc, sizeof (zfs_cmd_t)); 2574 } 2575 break; 2576 } 2577 default: 2578 err = -1; 2579 } 2580 2581 return (err); 2582 } 2583 2584 /* 2585 * This function is best effort. If it fails to set any of the given properties, 2586 * it continues to set as many as it can and returns the last error 2587 * encountered. If the caller provides a non-NULL errlist, it will be filled in 2588 * with the list of names of all the properties that failed along with the 2589 * corresponding error numbers. 2590 * 2591 * If every property is set successfully, zero is returned and errlist is not 2592 * modified. 2593 */ 2594 int 2595 zfs_set_prop_nvlist(const char *dsname, zprop_source_t source, nvlist_t *nvl, 2596 nvlist_t *errlist) 2597 { 2598 nvpair_t *pair; 2599 nvpair_t *propval; 2600 int rv = 0; 2601 uint64_t intval; 2602 char *strval; 2603 nvlist_t *genericnvl = fnvlist_alloc(); 2604 nvlist_t *retrynvl = fnvlist_alloc(); 2605 2606 retry: 2607 pair = NULL; 2608 while ((pair = nvlist_next_nvpair(nvl, pair)) != NULL) { 2609 const char *propname = nvpair_name(pair); 2610 zfs_prop_t prop = zfs_name_to_prop(propname); 2611 int err = 0; 2612 2613 /* decode the property value */ 2614 propval = pair; 2615 if (nvpair_type(pair) == DATA_TYPE_NVLIST) { 2616 nvlist_t *attrs; 2617 attrs = fnvpair_value_nvlist(pair); 2618 if (nvlist_lookup_nvpair(attrs, ZPROP_VALUE, 2619 &propval) != 0) 2620 err = SET_ERROR(EINVAL); 2621 } 2622 2623 /* Validate value type */ 2624 if (err == 0 && source == ZPROP_SRC_INHERITED) { 2625 /* inherited properties are expected to be booleans */ 2626 if (nvpair_type(propval) != DATA_TYPE_BOOLEAN) 2627 err = SET_ERROR(EINVAL); 2628 } else if (err == 0 && prop == ZPROP_INVAL) { 2629 if (zfs_prop_user(propname)) { 2630 if (nvpair_type(propval) != DATA_TYPE_STRING) 2631 err = SET_ERROR(EINVAL); 2632 } else if (zfs_prop_userquota(propname)) { 2633 if (nvpair_type(propval) != 2634 DATA_TYPE_UINT64_ARRAY) 2635 err = SET_ERROR(EINVAL); 2636 } else { 2637 err = SET_ERROR(EINVAL); 2638 } 2639 } else if (err == 0) { 2640 if (nvpair_type(propval) == DATA_TYPE_STRING) { 2641 if (zfs_prop_get_type(prop) != PROP_TYPE_STRING) 2642 err = SET_ERROR(EINVAL); 2643 } else if (nvpair_type(propval) == DATA_TYPE_UINT64) { 2644 const char *unused; 2645 2646 intval = fnvpair_value_uint64(propval); 2647 2648 switch (zfs_prop_get_type(prop)) { 2649 case PROP_TYPE_NUMBER: 2650 break; 2651 case PROP_TYPE_STRING: 2652 err = SET_ERROR(EINVAL); 2653 break; 2654 case PROP_TYPE_INDEX: 2655 if (zfs_prop_index_to_string(prop, 2656 intval, &unused) != 0) 2657 err = SET_ERROR(EINVAL); 2658 break; 2659 default: 2660 cmn_err(CE_PANIC, 2661 "unknown property type"); 2662 } 2663 } else { 2664 err = SET_ERROR(EINVAL); 2665 } 2666 } 2667 2668 /* Validate permissions */ 2669 if (err == 0) 2670 err = zfs_check_settable(dsname, pair, CRED()); 2671 2672 if (err == 0) { 2673 if (source == ZPROP_SRC_INHERITED) 2674 err = -1; /* does not need special handling */ 2675 else 2676 err = zfs_prop_set_special(dsname, source, 2677 pair); 2678 if (err == -1) { 2679 /* 2680 * For better performance we build up a list of 2681 * properties to set in a single transaction. 2682 */ 2683 err = nvlist_add_nvpair(genericnvl, pair); 2684 } else if (err != 0 && nvl != retrynvl) { 2685 /* 2686 * This may be a spurious error caused by 2687 * receiving quota and reservation out of order. 2688 * Try again in a second pass. 2689 */ 2690 err = nvlist_add_nvpair(retrynvl, pair); 2691 } 2692 } 2693 2694 if (err != 0) { 2695 if (errlist != NULL) 2696 fnvlist_add_int32(errlist, propname, err); 2697 rv = err; 2698 } 2699 } 2700 2701 if (nvl != retrynvl && !nvlist_empty(retrynvl)) { 2702 nvl = retrynvl; 2703 goto retry; 2704 } 2705 2706 if (!nvlist_empty(genericnvl) && 2707 dsl_props_set(dsname, source, genericnvl) != 0) { 2708 /* 2709 * If this fails, we still want to set as many properties as we 2710 * can, so try setting them individually. 2711 */ 2712 pair = NULL; 2713 while ((pair = nvlist_next_nvpair(genericnvl, pair)) != NULL) { 2714 const char *propname = nvpair_name(pair); 2715 int err = 0; 2716 2717 propval = pair; 2718 if (nvpair_type(pair) == DATA_TYPE_NVLIST) { 2719 nvlist_t *attrs; 2720 attrs = fnvpair_value_nvlist(pair); 2721 propval = fnvlist_lookup_nvpair(attrs, 2722 ZPROP_VALUE); 2723 } 2724 2725 if (nvpair_type(propval) == DATA_TYPE_STRING) { 2726 strval = fnvpair_value_string(propval); 2727 err = dsl_prop_set_string(dsname, propname, 2728 source, strval); 2729 } else if (nvpair_type(propval) == DATA_TYPE_BOOLEAN) { 2730 err = dsl_prop_inherit(dsname, propname, 2731 source); 2732 } else { 2733 intval = fnvpair_value_uint64(propval); 2734 err = dsl_prop_set_int(dsname, propname, source, 2735 intval); 2736 } 2737 2738 if (err != 0) { 2739 if (errlist != NULL) { 2740 fnvlist_add_int32(errlist, propname, 2741 err); 2742 } 2743 rv = err; 2744 } 2745 } 2746 } 2747 nvlist_free(genericnvl); 2748 nvlist_free(retrynvl); 2749 2750 return (rv); 2751 } 2752 2753 /* 2754 * Check that all the properties are valid user properties. 2755 */ 2756 static int 2757 zfs_check_userprops(const char *fsname, nvlist_t *nvl) 2758 { 2759 nvpair_t *pair = NULL; 2760 int error = 0; 2761 2762 while ((pair = nvlist_next_nvpair(nvl, pair)) != NULL) { 2763 const char *propname = nvpair_name(pair); 2764 2765 if (!zfs_prop_user(propname) || 2766 nvpair_type(pair) != DATA_TYPE_STRING) 2767 return (SET_ERROR(EINVAL)); 2768 2769 if (error = zfs_secpolicy_write_perms(fsname, 2770 ZFS_DELEG_PERM_USERPROP, CRED())) 2771 return (error); 2772 2773 if (strlen(propname) >= ZAP_MAXNAMELEN) 2774 return (SET_ERROR(ENAMETOOLONG)); 2775 2776 if (strlen(fnvpair_value_string(pair)) >= ZAP_MAXVALUELEN) 2777 return (E2BIG); 2778 } 2779 return (0); 2780 } 2781 2782 static void 2783 props_skip(nvlist_t *props, nvlist_t *skipped, nvlist_t **newprops) 2784 { 2785 nvpair_t *pair; 2786 2787 VERIFY(nvlist_alloc(newprops, NV_UNIQUE_NAME, KM_SLEEP) == 0); 2788 2789 pair = NULL; 2790 while ((pair = nvlist_next_nvpair(props, pair)) != NULL) { 2791 if (nvlist_exists(skipped, nvpair_name(pair))) 2792 continue; 2793 2794 VERIFY(nvlist_add_nvpair(*newprops, pair) == 0); 2795 } 2796 } 2797 2798 static int 2799 clear_received_props(const char *dsname, nvlist_t *props, 2800 nvlist_t *skipped) 2801 { 2802 int err = 0; 2803 nvlist_t *cleared_props = NULL; 2804 props_skip(props, skipped, &cleared_props); 2805 if (!nvlist_empty(cleared_props)) { 2806 /* 2807 * Acts on local properties until the dataset has received 2808 * properties at least once on or after SPA_VERSION_RECVD_PROPS. 2809 */ 2810 zprop_source_t flags = (ZPROP_SRC_NONE | 2811 (dsl_prop_get_hasrecvd(dsname) ? ZPROP_SRC_RECEIVED : 0)); 2812 err = zfs_set_prop_nvlist(dsname, flags, cleared_props, NULL); 2813 } 2814 nvlist_free(cleared_props); 2815 return (err); 2816 } 2817 2818 /* 2819 * inputs: 2820 * zc_name name of filesystem 2821 * zc_value name of property to set 2822 * zc_nvlist_src{_size} nvlist of properties to apply 2823 * zc_cookie received properties flag 2824 * 2825 * outputs: 2826 * zc_nvlist_dst{_size} error for each unapplied received property 2827 */ 2828 static int 2829 zfs_ioc_set_prop(zfs_cmd_t *zc) 2830 { 2831 nvlist_t *nvl; 2832 boolean_t received = zc->zc_cookie; 2833 zprop_source_t source = (received ? ZPROP_SRC_RECEIVED : 2834 ZPROP_SRC_LOCAL); 2835 nvlist_t *errors; 2836 int error; 2837 2838 if ((error = get_nvlist(zc->zc_nvlist_src, zc->zc_nvlist_src_size, 2839 zc->zc_iflags, &nvl)) != 0) 2840 return (error); 2841 2842 if (received) { 2843 nvlist_t *origprops; 2844 2845 if (dsl_prop_get_received(zc->zc_name, &origprops) == 0) { 2846 (void) clear_received_props(zc->zc_name, 2847 origprops, nvl); 2848 nvlist_free(origprops); 2849 } 2850 2851 error = dsl_prop_set_hasrecvd(zc->zc_name); 2852 } 2853 2854 errors = fnvlist_alloc(); 2855 if (error == 0) 2856 error = zfs_set_prop_nvlist(zc->zc_name, source, nvl, errors); 2857 2858 if (zc->zc_nvlist_dst != 0 && errors != NULL) { 2859 (void) put_nvlist(zc, errors); 2860 } 2861 2862 nvlist_free(errors); 2863 nvlist_free(nvl); 2864 return (error); 2865 } 2866 2867 /* 2868 * inputs: 2869 * zc_name name of filesystem 2870 * zc_value name of property to inherit 2871 * zc_cookie revert to received value if TRUE 2872 * 2873 * outputs: none 2874 */ 2875 static int 2876 zfs_ioc_inherit_prop(zfs_cmd_t *zc) 2877 { 2878 const char *propname = zc->zc_value; 2879 zfs_prop_t prop = zfs_name_to_prop(propname); 2880 boolean_t received = zc->zc_cookie; 2881 zprop_source_t source = (received 2882 ? ZPROP_SRC_NONE /* revert to received value, if any */ 2883 : ZPROP_SRC_INHERITED); /* explicitly inherit */ 2884 2885 if (received) { 2886 nvlist_t *dummy; 2887 nvpair_t *pair; 2888 zprop_type_t type; 2889 int err; 2890 2891 /* 2892 * zfs_prop_set_special() expects properties in the form of an 2893 * nvpair with type info. 2894 */ 2895 if (prop == ZPROP_INVAL) { 2896 if (!zfs_prop_user(propname)) 2897 return (SET_ERROR(EINVAL)); 2898 2899 type = PROP_TYPE_STRING; 2900 } else if (prop == ZFS_PROP_VOLSIZE || 2901 prop == ZFS_PROP_VERSION) { 2902 return (SET_ERROR(EINVAL)); 2903 } else { 2904 type = zfs_prop_get_type(prop); 2905 } 2906 2907 VERIFY(nvlist_alloc(&dummy, NV_UNIQUE_NAME, KM_SLEEP) == 0); 2908 2909 switch (type) { 2910 case PROP_TYPE_STRING: 2911 VERIFY(0 == nvlist_add_string(dummy, propname, "")); 2912 break; 2913 case PROP_TYPE_NUMBER: 2914 case PROP_TYPE_INDEX: 2915 VERIFY(0 == nvlist_add_uint64(dummy, propname, 0)); 2916 break; 2917 default: 2918 nvlist_free(dummy); 2919 return (SET_ERROR(EINVAL)); 2920 } 2921 2922 pair = nvlist_next_nvpair(dummy, NULL); 2923 err = zfs_prop_set_special(zc->zc_name, source, pair); 2924 nvlist_free(dummy); 2925 if (err != -1) 2926 return (err); /* special property already handled */ 2927 } else { 2928 /* 2929 * Only check this in the non-received case. We want to allow 2930 * 'inherit -S' to revert non-inheritable properties like quota 2931 * and reservation to the received or default values even though 2932 * they are not considered inheritable. 2933 */ 2934 if (prop != ZPROP_INVAL && !zfs_prop_inheritable(prop)) 2935 return (SET_ERROR(EINVAL)); 2936 } 2937 2938 /* property name has been validated by zfs_secpolicy_inherit_prop() */ 2939 return (dsl_prop_inherit(zc->zc_name, zc->zc_value, source)); 2940 } 2941 2942 static int 2943 zfs_ioc_pool_set_props(zfs_cmd_t *zc) 2944 { 2945 nvlist_t *props; 2946 spa_t *spa; 2947 int error; 2948 nvpair_t *pair; 2949 2950 if (error = get_nvlist(zc->zc_nvlist_src, zc->zc_nvlist_src_size, 2951 zc->zc_iflags, &props)) 2952 return (error); 2953 2954 /* 2955 * If the only property is the configfile, then just do a spa_lookup() 2956 * to handle the faulted case. 2957 */ 2958 pair = nvlist_next_nvpair(props, NULL); 2959 if (pair != NULL && strcmp(nvpair_name(pair), 2960 zpool_prop_to_name(ZPOOL_PROP_CACHEFILE)) == 0 && 2961 nvlist_next_nvpair(props, pair) == NULL) { 2962 mutex_enter(&spa_namespace_lock); 2963 if ((spa = spa_lookup(zc->zc_name)) != NULL) { 2964 spa_configfile_set(spa, props, B_FALSE); 2965 spa_write_cachefile(spa, B_FALSE, B_TRUE); 2966 } 2967 mutex_exit(&spa_namespace_lock); 2968 if (spa != NULL) { 2969 nvlist_free(props); 2970 return (0); 2971 } 2972 } 2973 2974 if ((error = spa_open(zc->zc_name, &spa, FTAG)) != 0) { 2975 nvlist_free(props); 2976 return (error); 2977 } 2978 2979 error = spa_prop_set(spa, props); 2980 2981 nvlist_free(props); 2982 spa_close(spa, FTAG); 2983 2984 return (error); 2985 } 2986 2987 static int 2988 zfs_ioc_pool_get_props(zfs_cmd_t *zc) 2989 { 2990 spa_t *spa; 2991 int error; 2992 nvlist_t *nvp = NULL; 2993 2994 if ((error = spa_open(zc->zc_name, &spa, FTAG)) != 0) { 2995 /* 2996 * If the pool is faulted, there may be properties we can still 2997 * get (such as altroot and cachefile), so attempt to get them 2998 * anyway. 2999 */ 3000 mutex_enter(&spa_namespace_lock); 3001 if ((spa = spa_lookup(zc->zc_name)) != NULL) 3002 error = spa_prop_get(spa, &nvp); 3003 mutex_exit(&spa_namespace_lock); 3004 } else { 3005 error = spa_prop_get(spa, &nvp); 3006 spa_close(spa, FTAG); 3007 } 3008 3009 if (error == 0 && zc->zc_nvlist_dst != 0) 3010 error = put_nvlist(zc, nvp); 3011 else 3012 error = SET_ERROR(EFAULT); 3013 3014 nvlist_free(nvp); 3015 return (error); 3016 } 3017 3018 /* 3019 * inputs: 3020 * zc_name name of filesystem 3021 * zc_nvlist_src{_size} nvlist of delegated permissions 3022 * zc_perm_action allow/unallow flag 3023 * 3024 * outputs: none 3025 */ 3026 static int 3027 zfs_ioc_set_fsacl(zfs_cmd_t *zc) 3028 { 3029 int error; 3030 nvlist_t *fsaclnv = NULL; 3031 3032 if ((error = get_nvlist(zc->zc_nvlist_src, zc->zc_nvlist_src_size, 3033 zc->zc_iflags, &fsaclnv)) != 0) 3034 return (error); 3035 3036 /* 3037 * Verify nvlist is constructed correctly 3038 */ 3039 if ((error = zfs_deleg_verify_nvlist(fsaclnv)) != 0) { 3040 nvlist_free(fsaclnv); 3041 return (SET_ERROR(EINVAL)); 3042 } 3043 3044 /* 3045 * If we don't have PRIV_SYS_MOUNT, then validate 3046 * that user is allowed to hand out each permission in 3047 * the nvlist(s) 3048 */ 3049 3050 error = secpolicy_zfs(CRED()); 3051 if (error != 0) { 3052 if (zc->zc_perm_action == B_FALSE) { 3053 error = dsl_deleg_can_allow(zc->zc_name, 3054 fsaclnv, CRED()); 3055 } else { 3056 error = dsl_deleg_can_unallow(zc->zc_name, 3057 fsaclnv, CRED()); 3058 } 3059 } 3060 3061 if (error == 0) 3062 error = dsl_deleg_set(zc->zc_name, fsaclnv, zc->zc_perm_action); 3063 3064 nvlist_free(fsaclnv); 3065 return (error); 3066 } 3067 3068 /* 3069 * inputs: 3070 * zc_name name of filesystem 3071 * 3072 * outputs: 3073 * zc_nvlist_src{_size} nvlist of delegated permissions 3074 */ 3075 static int 3076 zfs_ioc_get_fsacl(zfs_cmd_t *zc) 3077 { 3078 nvlist_t *nvp; 3079 int error; 3080 3081 if ((error = dsl_deleg_get(zc->zc_name, &nvp)) == 0) { 3082 error = put_nvlist(zc, nvp); 3083 nvlist_free(nvp); 3084 } 3085 3086 return (error); 3087 } 3088 3089 /* ARGSUSED */ 3090 static void 3091 zfs_create_cb(objset_t *os, void *arg, cred_t *cr, dmu_tx_t *tx) 3092 { 3093 zfs_creat_t *zct = arg; 3094 3095 zfs_create_fs(os, cr, zct->zct_zplprops, tx); 3096 } 3097 3098 #define ZFS_PROP_UNDEFINED ((uint64_t)-1) 3099 3100 /* 3101 * inputs: 3102 * os parent objset pointer (NULL if root fs) 3103 * fuids_ok fuids allowed in this version of the spa? 3104 * sa_ok SAs allowed in this version of the spa? 3105 * createprops list of properties requested by creator 3106 * 3107 * outputs: 3108 * zplprops values for the zplprops we attach to the master node object 3109 * is_ci true if requested file system will be purely case-insensitive 3110 * 3111 * Determine the settings for utf8only, normalization and 3112 * casesensitivity. Specific values may have been requested by the 3113 * creator and/or we can inherit values from the parent dataset. If 3114 * the file system is of too early a vintage, a creator can not 3115 * request settings for these properties, even if the requested 3116 * setting is the default value. We don't actually want to create dsl 3117 * properties for these, so remove them from the source nvlist after 3118 * processing. 3119 */ 3120 static int 3121 zfs_fill_zplprops_impl(objset_t *os, uint64_t zplver, 3122 boolean_t fuids_ok, boolean_t sa_ok, nvlist_t *createprops, 3123 nvlist_t *zplprops, boolean_t *is_ci) 3124 { 3125 uint64_t sense = ZFS_PROP_UNDEFINED; 3126 uint64_t norm = ZFS_PROP_UNDEFINED; 3127 uint64_t u8 = ZFS_PROP_UNDEFINED; 3128 3129 ASSERT(zplprops != NULL); 3130 3131 if (os != NULL && os->os_phys->os_type != DMU_OST_ZFS) 3132 return (SET_ERROR(EINVAL)); 3133 3134 /* 3135 * Pull out creator prop choices, if any. 3136 */ 3137 if (createprops) { 3138 (void) nvlist_lookup_uint64(createprops, 3139 zfs_prop_to_name(ZFS_PROP_VERSION), &zplver); 3140 (void) nvlist_lookup_uint64(createprops, 3141 zfs_prop_to_name(ZFS_PROP_NORMALIZE), &norm); 3142 (void) nvlist_remove_all(createprops, 3143 zfs_prop_to_name(ZFS_PROP_NORMALIZE)); 3144 (void) nvlist_lookup_uint64(createprops, 3145 zfs_prop_to_name(ZFS_PROP_UTF8ONLY), &u8); 3146 (void) nvlist_remove_all(createprops, 3147 zfs_prop_to_name(ZFS_PROP_UTF8ONLY)); 3148 (void) nvlist_lookup_uint64(createprops, 3149 zfs_prop_to_name(ZFS_PROP_CASE), &sense); 3150 (void) nvlist_remove_all(createprops, 3151 zfs_prop_to_name(ZFS_PROP_CASE)); 3152 } 3153 3154 /* 3155 * If the zpl version requested is whacky or the file system 3156 * or pool is version is too "young" to support normalization 3157 * and the creator tried to set a value for one of the props, 3158 * error out. 3159 */ 3160 if ((zplver < ZPL_VERSION_INITIAL || zplver > ZPL_VERSION) || 3161 (zplver >= ZPL_VERSION_FUID && !fuids_ok) || 3162 (zplver >= ZPL_VERSION_SA && !sa_ok) || 3163 (zplver < ZPL_VERSION_NORMALIZATION && 3164 (norm != ZFS_PROP_UNDEFINED || u8 != ZFS_PROP_UNDEFINED || 3165 sense != ZFS_PROP_UNDEFINED))) 3166 return (SET_ERROR(ENOTSUP)); 3167 3168 /* 3169 * Put the version in the zplprops 3170 */ 3171 VERIFY(nvlist_add_uint64(zplprops, 3172 zfs_prop_to_name(ZFS_PROP_VERSION), zplver) == 0); 3173 3174 if (norm == ZFS_PROP_UNDEFINED) 3175 VERIFY(zfs_get_zplprop(os, ZFS_PROP_NORMALIZE, &norm) == 0); 3176 VERIFY(nvlist_add_uint64(zplprops, 3177 zfs_prop_to_name(ZFS_PROP_NORMALIZE), norm) == 0); 3178 3179 /* 3180 * If we're normalizing, names must always be valid UTF-8 strings. 3181 */ 3182 if (norm) 3183 u8 = 1; 3184 if (u8 == ZFS_PROP_UNDEFINED) 3185 VERIFY(zfs_get_zplprop(os, ZFS_PROP_UTF8ONLY, &u8) == 0); 3186 VERIFY(nvlist_add_uint64(zplprops, 3187 zfs_prop_to_name(ZFS_PROP_UTF8ONLY), u8) == 0); 3188 3189 if (sense == ZFS_PROP_UNDEFINED) 3190 VERIFY(zfs_get_zplprop(os, ZFS_PROP_CASE, &sense) == 0); 3191 VERIFY(nvlist_add_uint64(zplprops, 3192 zfs_prop_to_name(ZFS_PROP_CASE), sense) == 0); 3193 3194 if (is_ci) 3195 *is_ci = (sense == ZFS_CASE_INSENSITIVE); 3196 3197 return (0); 3198 } 3199 3200 static int 3201 zfs_fill_zplprops(const char *dataset, nvlist_t *createprops, 3202 nvlist_t *zplprops, boolean_t *is_ci) 3203 { 3204 boolean_t fuids_ok, sa_ok; 3205 uint64_t zplver = ZPL_VERSION; 3206 objset_t *os = NULL; 3207 char parentname[ZFS_MAX_DATASET_NAME_LEN]; 3208 char *cp; 3209 spa_t *spa; 3210 uint64_t spa_vers; 3211 int error; 3212 3213 (void) strlcpy(parentname, dataset, sizeof (parentname)); 3214 cp = strrchr(parentname, '/'); 3215 ASSERT(cp != NULL); 3216 cp[0] = '\0'; 3217 3218 if ((error = spa_open(dataset, &spa, FTAG)) != 0) 3219 return (error); 3220 3221 spa_vers = spa_version(spa); 3222 spa_close(spa, FTAG); 3223 3224 zplver = zfs_zpl_version_map(spa_vers); 3225 fuids_ok = (zplver >= ZPL_VERSION_FUID); 3226 sa_ok = (zplver >= ZPL_VERSION_SA); 3227 3228 /* 3229 * Open parent object set so we can inherit zplprop values. 3230 */ 3231 if ((error = dmu_objset_hold(parentname, FTAG, &os)) != 0) 3232 return (error); 3233 3234 error = zfs_fill_zplprops_impl(os, zplver, fuids_ok, sa_ok, createprops, 3235 zplprops, is_ci); 3236 dmu_objset_rele(os, FTAG); 3237 return (error); 3238 } 3239 3240 static int 3241 zfs_fill_zplprops_root(uint64_t spa_vers, nvlist_t *createprops, 3242 nvlist_t *zplprops, boolean_t *is_ci) 3243 { 3244 boolean_t fuids_ok; 3245 boolean_t sa_ok; 3246 uint64_t zplver = ZPL_VERSION; 3247 int error; 3248 3249 zplver = zfs_zpl_version_map(spa_vers); 3250 fuids_ok = (zplver >= ZPL_VERSION_FUID); 3251 sa_ok = (zplver >= ZPL_VERSION_SA); 3252 3253 error = zfs_fill_zplprops_impl(NULL, zplver, fuids_ok, sa_ok, 3254 createprops, zplprops, is_ci); 3255 return (error); 3256 } 3257 3258 /* 3259 * innvl: { 3260 * "type" -> dmu_objset_type_t (int32) 3261 * (optional) "props" -> { prop -> value } 3262 * (optional) "hidden_args" -> { "wkeydata" -> value } 3263 * raw uint8_t array of encryption wrapping key data (32 bytes) 3264 * } 3265 * 3266 * outnvl: propname -> error code (int32) 3267 */ 3268 static int 3269 zfs_ioc_create(const char *fsname, nvlist_t *innvl, nvlist_t *outnvl) 3270 { 3271 int error = 0; 3272 zfs_creat_t zct = { 0 }; 3273 nvlist_t *nvprops = NULL; 3274 nvlist_t *hidden_args = NULL; 3275 void (*cbfunc)(objset_t *os, void *arg, cred_t *cr, dmu_tx_t *tx); 3276 int32_t type32; 3277 dmu_objset_type_t type; 3278 boolean_t is_insensitive = B_FALSE; 3279 dsl_crypto_params_t *dcp = NULL; 3280 3281 if (nvlist_lookup_int32(innvl, "type", &type32) != 0) 3282 return (SET_ERROR(EINVAL)); 3283 type = type32; 3284 (void) nvlist_lookup_nvlist(innvl, "props", &nvprops); 3285 (void) nvlist_lookup_nvlist(innvl, ZPOOL_HIDDEN_ARGS, &hidden_args); 3286 3287 switch (type) { 3288 case DMU_OST_ZFS: 3289 cbfunc = zfs_create_cb; 3290 break; 3291 3292 case DMU_OST_ZVOL: 3293 cbfunc = zvol_create_cb; 3294 break; 3295 3296 default: 3297 cbfunc = NULL; 3298 break; 3299 } 3300 if (strchr(fsname, '@') || 3301 strchr(fsname, '%')) 3302 return (SET_ERROR(EINVAL)); 3303 3304 zct.zct_props = nvprops; 3305 3306 if (cbfunc == NULL) 3307 return (SET_ERROR(EINVAL)); 3308 3309 if (type == DMU_OST_ZVOL) { 3310 uint64_t volsize, volblocksize; 3311 3312 if (nvprops == NULL) 3313 return (SET_ERROR(EINVAL)); 3314 if (nvlist_lookup_uint64(nvprops, 3315 zfs_prop_to_name(ZFS_PROP_VOLSIZE), &volsize) != 0) 3316 return (SET_ERROR(EINVAL)); 3317 3318 if ((error = nvlist_lookup_uint64(nvprops, 3319 zfs_prop_to_name(ZFS_PROP_VOLBLOCKSIZE), 3320 &volblocksize)) != 0 && error != ENOENT) 3321 return (SET_ERROR(EINVAL)); 3322 3323 if (error != 0) 3324 volblocksize = zfs_prop_default_numeric( 3325 ZFS_PROP_VOLBLOCKSIZE); 3326 3327 if ((error = zvol_check_volblocksize( 3328 volblocksize)) != 0 || 3329 (error = zvol_check_volsize(volsize, 3330 volblocksize)) != 0) 3331 return (error); 3332 } else if (type == DMU_OST_ZFS) { 3333 int error; 3334 3335 /* 3336 * We have to have normalization and 3337 * case-folding flags correct when we do the 3338 * file system creation, so go figure them out 3339 * now. 3340 */ 3341 VERIFY(nvlist_alloc(&zct.zct_zplprops, 3342 NV_UNIQUE_NAME, KM_SLEEP) == 0); 3343 error = zfs_fill_zplprops(fsname, nvprops, 3344 zct.zct_zplprops, &is_insensitive); 3345 if (error != 0) { 3346 nvlist_free(zct.zct_zplprops); 3347 return (error); 3348 } 3349 } 3350 3351 error = dsl_crypto_params_create_nvlist(DCP_CMD_NONE, nvprops, 3352 hidden_args, &dcp); 3353 if (error != 0) { 3354 nvlist_free(zct.zct_zplprops); 3355 return (error); 3356 } 3357 3358 error = dmu_objset_create(fsname, type, 3359 is_insensitive ? DS_FLAG_CI_DATASET : 0, dcp, cbfunc, &zct); 3360 3361 nvlist_free(zct.zct_zplprops); 3362 dsl_crypto_params_free(dcp, !!error); 3363 3364 /* 3365 * It would be nice to do this atomically. 3366 */ 3367 if (error == 0) { 3368 error = zfs_set_prop_nvlist(fsname, ZPROP_SRC_LOCAL, 3369 nvprops, outnvl); 3370 if (error != 0) 3371 (void) dsl_destroy_head(fsname); 3372 } 3373 return (error); 3374 } 3375 3376 /* 3377 * innvl: { 3378 * "origin" -> name of origin snapshot 3379 * (optional) "props" -> { prop -> value } 3380 * (optional) "hidden_args" -> { "wkeydata" -> value } 3381 * raw uint8_t array of encryption wrapping key data (32 bytes) 3382 * } 3383 * 3384 * outnvl: propname -> error code (int32) 3385 */ 3386 static int 3387 zfs_ioc_clone(const char *fsname, nvlist_t *innvl, nvlist_t *outnvl) 3388 { 3389 int error = 0; 3390 nvlist_t *nvprops = NULL; 3391 char *origin_name; 3392 3393 if (nvlist_lookup_string(innvl, "origin", &origin_name) != 0) 3394 return (SET_ERROR(EINVAL)); 3395 (void) nvlist_lookup_nvlist(innvl, "props", &nvprops); 3396 3397 if (strchr(fsname, '@') || 3398 strchr(fsname, '%')) 3399 return (SET_ERROR(EINVAL)); 3400 3401 if (dataset_namecheck(origin_name, NULL, NULL) != 0) 3402 return (SET_ERROR(EINVAL)); 3403 3404 error = dmu_objset_clone(fsname, origin_name); 3405 3406 /* 3407 * It would be nice to do this atomically. 3408 */ 3409 if (error == 0) { 3410 error = zfs_set_prop_nvlist(fsname, ZPROP_SRC_LOCAL, 3411 nvprops, outnvl); 3412 if (error != 0) 3413 (void) dsl_destroy_head(fsname); 3414 } 3415 return (error); 3416 } 3417 3418 /* ARGSUSED */ 3419 static int 3420 zfs_ioc_remap(const char *fsname, nvlist_t *innvl, nvlist_t *outnvl) 3421 { 3422 if (strchr(fsname, '@') || 3423 strchr(fsname, '%')) 3424 return (SET_ERROR(EINVAL)); 3425 3426 return (dmu_objset_remap_indirects(fsname)); 3427 } 3428 3429 /* 3430 * innvl: { 3431 * "snaps" -> { snapshot1, snapshot2 } 3432 * (optional) "props" -> { prop -> value (string) } 3433 * } 3434 * 3435 * outnvl: snapshot -> error code (int32) 3436 */ 3437 static int 3438 zfs_ioc_snapshot(const char *poolname, nvlist_t *innvl, nvlist_t *outnvl) 3439 { 3440 nvlist_t *snaps; 3441 nvlist_t *props = NULL; 3442 int error, poollen; 3443 nvpair_t *pair; 3444 3445 (void) nvlist_lookup_nvlist(innvl, "props", &props); 3446 if ((error = zfs_check_userprops(poolname, props)) != 0) 3447 return (error); 3448 3449 if (!nvlist_empty(props) && 3450 zfs_earlier_version(poolname, SPA_VERSION_SNAP_PROPS)) 3451 return (SET_ERROR(ENOTSUP)); 3452 3453 if (nvlist_lookup_nvlist(innvl, "snaps", &snaps) != 0) 3454 return (SET_ERROR(EINVAL)); 3455 poollen = strlen(poolname); 3456 for (pair = nvlist_next_nvpair(snaps, NULL); pair != NULL; 3457 pair = nvlist_next_nvpair(snaps, pair)) { 3458 const char *name = nvpair_name(pair); 3459 const char *cp = strchr(name, '@'); 3460 3461 /* 3462 * The snap name must contain an @, and the part after it must 3463 * contain only valid characters. 3464 */ 3465 if (cp == NULL || 3466 zfs_component_namecheck(cp + 1, NULL, NULL) != 0) 3467 return (SET_ERROR(EINVAL)); 3468 3469 /* 3470 * The snap must be in the specified pool. 3471 */ 3472 if (strncmp(name, poolname, poollen) != 0 || 3473 (name[poollen] != '/' && name[poollen] != '@')) 3474 return (SET_ERROR(EXDEV)); 3475 3476 /* This must be the only snap of this fs. */ 3477 for (nvpair_t *pair2 = nvlist_next_nvpair(snaps, pair); 3478 pair2 != NULL; pair2 = nvlist_next_nvpair(snaps, pair2)) { 3479 if (strncmp(name, nvpair_name(pair2), cp - name + 1) 3480 == 0) { 3481 return (SET_ERROR(EXDEV)); 3482 } 3483 } 3484 } 3485 3486 error = dsl_dataset_snapshot(snaps, props, outnvl); 3487 return (error); 3488 } 3489 3490 /* 3491 * innvl: "message" -> string 3492 */ 3493 /* ARGSUSED */ 3494 static int 3495 zfs_ioc_log_history(const char *unused, nvlist_t *innvl, nvlist_t *outnvl) 3496 { 3497 char *message; 3498 spa_t *spa; 3499 int error; 3500 char *poolname; 3501 3502 /* 3503 * The poolname in the ioctl is not set, we get it from the TSD, 3504 * which was set at the end of the last successful ioctl that allows 3505 * logging. The secpolicy func already checked that it is set. 3506 * Only one log ioctl is allowed after each successful ioctl, so 3507 * we clear the TSD here. 3508 */ 3509 poolname = tsd_get(zfs_allow_log_key); 3510 (void) tsd_set(zfs_allow_log_key, NULL); 3511 error = spa_open(poolname, &spa, FTAG); 3512 strfree(poolname); 3513 if (error != 0) 3514 return (error); 3515 3516 if (nvlist_lookup_string(innvl, "message", &message) != 0) { 3517 spa_close(spa, FTAG); 3518 return (SET_ERROR(EINVAL)); 3519 } 3520 3521 if (spa_version(spa) < SPA_VERSION_ZPOOL_HISTORY) { 3522 spa_close(spa, FTAG); 3523 return (SET_ERROR(ENOTSUP)); 3524 } 3525 3526 error = spa_history_log(spa, message); 3527 spa_close(spa, FTAG); 3528 return (error); 3529 } 3530 3531 /* 3532 * The dp_config_rwlock must not be held when calling this, because the 3533 * unmount may need to write out data. 3534 * 3535 * This function is best-effort. Callers must deal gracefully if it 3536 * remains mounted (or is remounted after this call). 3537 * 3538 * Returns 0 if the argument is not a snapshot, or it is not currently a 3539 * filesystem, or we were able to unmount it. Returns error code otherwise. 3540 */ 3541 void 3542 zfs_unmount_snap(const char *snapname) 3543 { 3544 vfs_t *vfsp = NULL; 3545 zfsvfs_t *zfsvfs = NULL; 3546 3547 if (strchr(snapname, '@') == NULL) 3548 return; 3549 3550 int err = getzfsvfs(snapname, &zfsvfs); 3551 if (err != 0) { 3552 ASSERT3P(zfsvfs, ==, NULL); 3553 return; 3554 } 3555 vfsp = zfsvfs->z_vfs; 3556 3557 ASSERT(!dsl_pool_config_held(dmu_objset_pool(zfsvfs->z_os))); 3558 3559 err = vn_vfswlock(vfsp->vfs_vnodecovered); 3560 VFS_RELE(vfsp); 3561 if (err != 0) 3562 return; 3563 3564 /* 3565 * Always force the unmount for snapshots. 3566 */ 3567 (void) dounmount(vfsp, MS_FORCE, kcred); 3568 } 3569 3570 /* ARGSUSED */ 3571 static int 3572 zfs_unmount_snap_cb(const char *snapname, void *arg) 3573 { 3574 zfs_unmount_snap(snapname); 3575 return (0); 3576 } 3577 3578 /* 3579 * When a clone is destroyed, its origin may also need to be destroyed, 3580 * in which case it must be unmounted. This routine will do that unmount 3581 * if necessary. 3582 */ 3583 void 3584 zfs_destroy_unmount_origin(const char *fsname) 3585 { 3586 int error; 3587 objset_t *os; 3588 dsl_dataset_t *ds; 3589 3590 error = dmu_objset_hold(fsname, FTAG, &os); 3591 if (error != 0) 3592 return; 3593 ds = dmu_objset_ds(os); 3594 if (dsl_dir_is_clone(ds->ds_dir) && DS_IS_DEFER_DESTROY(ds->ds_prev)) { 3595 char originname[ZFS_MAX_DATASET_NAME_LEN]; 3596 dsl_dataset_name(ds->ds_prev, originname); 3597 dmu_objset_rele(os, FTAG); 3598 zfs_unmount_snap(originname); 3599 } else { 3600 dmu_objset_rele(os, FTAG); 3601 } 3602 } 3603 3604 /* 3605 * innvl: { 3606 * "snaps" -> { snapshot1, snapshot2 } 3607 * (optional boolean) "defer" 3608 * } 3609 * 3610 * outnvl: snapshot -> error code (int32) 3611 * 3612 */ 3613 /* ARGSUSED */ 3614 static int 3615 zfs_ioc_destroy_snaps(const char *poolname, nvlist_t *innvl, nvlist_t *outnvl) 3616 { 3617 nvlist_t *snaps; 3618 nvpair_t *pair; 3619 boolean_t defer; 3620 3621 if (nvlist_lookup_nvlist(innvl, "snaps", &snaps) != 0) 3622 return (SET_ERROR(EINVAL)); 3623 defer = nvlist_exists(innvl, "defer"); 3624 3625 for (pair = nvlist_next_nvpair(snaps, NULL); pair != NULL; 3626 pair = nvlist_next_nvpair(snaps, pair)) { 3627 zfs_unmount_snap(nvpair_name(pair)); 3628 } 3629 3630 return (dsl_destroy_snapshots_nvl(snaps, defer, outnvl)); 3631 } 3632 3633 /* 3634 * Create bookmarks. Bookmark names are of the form <fs>#<bmark>. 3635 * All bookmarks must be in the same pool. 3636 * 3637 * innvl: { 3638 * bookmark1 -> snapshot1, bookmark2 -> snapshot2 3639 * } 3640 * 3641 * outnvl: bookmark -> error code (int32) 3642 * 3643 */ 3644 /* ARGSUSED */ 3645 static int 3646 zfs_ioc_bookmark(const char *poolname, nvlist_t *innvl, nvlist_t *outnvl) 3647 { 3648 for (nvpair_t *pair = nvlist_next_nvpair(innvl, NULL); 3649 pair != NULL; pair = nvlist_next_nvpair(innvl, pair)) { 3650 char *snap_name; 3651 3652 /* 3653 * Verify the snapshot argument. 3654 */ 3655 if (nvpair_value_string(pair, &snap_name) != 0) 3656 return (SET_ERROR(EINVAL)); 3657 3658 3659 /* Verify that the keys (bookmarks) are unique */ 3660 for (nvpair_t *pair2 = nvlist_next_nvpair(innvl, pair); 3661 pair2 != NULL; pair2 = nvlist_next_nvpair(innvl, pair2)) { 3662 if (strcmp(nvpair_name(pair), nvpair_name(pair2)) == 0) 3663 return (SET_ERROR(EINVAL)); 3664 } 3665 } 3666 3667 return (dsl_bookmark_create(innvl, outnvl)); 3668 } 3669 3670 /* 3671 * innvl: { 3672 * property 1, property 2, ... 3673 * } 3674 * 3675 * outnvl: { 3676 * bookmark name 1 -> { property 1, property 2, ... }, 3677 * bookmark name 2 -> { property 1, property 2, ... } 3678 * } 3679 * 3680 */ 3681 static int 3682 zfs_ioc_get_bookmarks(const char *fsname, nvlist_t *innvl, nvlist_t *outnvl) 3683 { 3684 return (dsl_get_bookmarks(fsname, innvl, outnvl)); 3685 } 3686 3687 /* 3688 * innvl: { 3689 * bookmark name 1, bookmark name 2 3690 * } 3691 * 3692 * outnvl: bookmark -> error code (int32) 3693 * 3694 */ 3695 static int 3696 zfs_ioc_destroy_bookmarks(const char *poolname, nvlist_t *innvl, 3697 nvlist_t *outnvl) 3698 { 3699 int error, poollen; 3700 3701 poollen = strlen(poolname); 3702 for (nvpair_t *pair = nvlist_next_nvpair(innvl, NULL); 3703 pair != NULL; pair = nvlist_next_nvpair(innvl, pair)) { 3704 const char *name = nvpair_name(pair); 3705 const char *cp = strchr(name, '#'); 3706 3707 /* 3708 * The bookmark name must contain an #, and the part after it 3709 * must contain only valid characters. 3710 */ 3711 if (cp == NULL || 3712 zfs_component_namecheck(cp + 1, NULL, NULL) != 0) 3713 return (SET_ERROR(EINVAL)); 3714 3715 /* 3716 * The bookmark must be in the specified pool. 3717 */ 3718 if (strncmp(name, poolname, poollen) != 0 || 3719 (name[poollen] != '/' && name[poollen] != '#')) 3720 return (SET_ERROR(EXDEV)); 3721 } 3722 3723 error = dsl_bookmark_destroy(innvl, outnvl); 3724 return (error); 3725 } 3726 3727 static int 3728 zfs_ioc_channel_program(const char *poolname, nvlist_t *innvl, 3729 nvlist_t *outnvl) 3730 { 3731 char *program; 3732 uint64_t instrlimit, memlimit; 3733 boolean_t sync_flag; 3734 nvpair_t *nvarg = NULL; 3735 3736 if (0 != nvlist_lookup_string(innvl, ZCP_ARG_PROGRAM, &program)) { 3737 return (EINVAL); 3738 } 3739 if (0 != nvlist_lookup_boolean_value(innvl, ZCP_ARG_SYNC, &sync_flag)) { 3740 sync_flag = B_TRUE; 3741 } 3742 if (0 != nvlist_lookup_uint64(innvl, ZCP_ARG_INSTRLIMIT, &instrlimit)) { 3743 instrlimit = ZCP_DEFAULT_INSTRLIMIT; 3744 } 3745 if (0 != nvlist_lookup_uint64(innvl, ZCP_ARG_MEMLIMIT, &memlimit)) { 3746 memlimit = ZCP_DEFAULT_MEMLIMIT; 3747 } 3748 if (0 != nvlist_lookup_nvpair(innvl, ZCP_ARG_ARGLIST, &nvarg)) { 3749 return (EINVAL); 3750 } 3751 3752 if (instrlimit == 0 || instrlimit > zfs_lua_max_instrlimit) 3753 return (EINVAL); 3754 if (memlimit == 0 || memlimit > zfs_lua_max_memlimit) 3755 return (EINVAL); 3756 3757 return (zcp_eval(poolname, program, sync_flag, instrlimit, memlimit, 3758 nvarg, outnvl)); 3759 } 3760 3761 /* 3762 * innvl: unused 3763 * outnvl: empty 3764 */ 3765 /* ARGSUSED */ 3766 static int 3767 zfs_ioc_pool_checkpoint(const char *poolname, nvlist_t *innvl, nvlist_t *outnvl) 3768 { 3769 return (spa_checkpoint(poolname)); 3770 } 3771 3772 /* 3773 * innvl: unused 3774 * outnvl: empty 3775 */ 3776 /* ARGSUSED */ 3777 static int 3778 zfs_ioc_pool_discard_checkpoint(const char *poolname, nvlist_t *innvl, 3779 nvlist_t *outnvl) 3780 { 3781 return (spa_checkpoint_discard(poolname)); 3782 } 3783 3784 /* 3785 * inputs: 3786 * zc_name name of dataset to destroy 3787 * zc_defer_destroy mark for deferred destroy 3788 * 3789 * outputs: none 3790 */ 3791 static int 3792 zfs_ioc_destroy(zfs_cmd_t *zc) 3793 { 3794 objset_t *os; 3795 dmu_objset_type_t ost; 3796 int err; 3797 3798 err = dmu_objset_hold(zc->zc_name, FTAG, &os); 3799 if (err != 0) 3800 return (err); 3801 ost = dmu_objset_type(os); 3802 dmu_objset_rele(os, FTAG); 3803 3804 if (ost == DMU_OST_ZFS) 3805 zfs_unmount_snap(zc->zc_name); 3806 3807 if (strchr(zc->zc_name, '@')) { 3808 err = dsl_destroy_snapshot(zc->zc_name, zc->zc_defer_destroy); 3809 } else { 3810 err = dsl_destroy_head(zc->zc_name); 3811 if (err == EEXIST) { 3812 /* 3813 * It is possible that the given DS may have 3814 * hidden child (%recv) datasets - "leftovers" 3815 * resulting from the previously interrupted 3816 * 'zfs receive'. 3817 * 3818 * 6 extra bytes for /%recv 3819 */ 3820 char namebuf[ZFS_MAX_DATASET_NAME_LEN + 6]; 3821 3822 if (snprintf(namebuf, sizeof (namebuf), "%s/%s", 3823 zc->zc_name, recv_clone_name) >= 3824 sizeof (namebuf)) 3825 return (SET_ERROR(EINVAL)); 3826 3827 /* 3828 * Try to remove the hidden child (%recv) and after 3829 * that try to remove the target dataset. 3830 * If the hidden child (%recv) does not exist 3831 * the original error (EEXIST) will be returned 3832 */ 3833 err = dsl_destroy_head(namebuf); 3834 if (err == 0) 3835 err = dsl_destroy_head(zc->zc_name); 3836 else if (err == ENOENT) 3837 err = SET_ERROR(EEXIST); 3838 } 3839 } 3840 if (ost == DMU_OST_ZVOL && err == 0) 3841 (void) zvol_remove_minor(zc->zc_name); 3842 return (err); 3843 } 3844 3845 /* 3846 * innvl: { 3847 * "initialize_command" -> POOL_INITIALIZE_{CANCEL|START|SUSPEND} (uint64) 3848 * "initialize_vdevs": { -> guids to initialize (nvlist) 3849 * "vdev_path_1": vdev_guid_1, (uint64), 3850 * "vdev_path_2": vdev_guid_2, (uint64), 3851 * ... 3852 * }, 3853 * } 3854 * 3855 * outnvl: { 3856 * "initialize_vdevs": { -> initialization errors (nvlist) 3857 * "vdev_path_1": errno, see function body for possible errnos (uint64) 3858 * "vdev_path_2": errno, ... (uint64) 3859 * ... 3860 * } 3861 * } 3862 * 3863 * EINVAL is returned for an unknown command or if any of the provided vdev 3864 * guids have be specified with a type other than uint64. 3865 */ 3866 static int 3867 zfs_ioc_pool_initialize(const char *poolname, nvlist_t *innvl, nvlist_t *outnvl) 3868 { 3869 uint64_t cmd_type; 3870 if (nvlist_lookup_uint64(innvl, ZPOOL_INITIALIZE_COMMAND, 3871 &cmd_type) != 0) { 3872 return (SET_ERROR(EINVAL)); 3873 } 3874 3875 if (!(cmd_type == POOL_INITIALIZE_CANCEL || 3876 cmd_type == POOL_INITIALIZE_START || 3877 cmd_type == POOL_INITIALIZE_SUSPEND)) { 3878 return (SET_ERROR(EINVAL)); 3879 } 3880 3881 nvlist_t *vdev_guids; 3882 if (nvlist_lookup_nvlist(innvl, ZPOOL_INITIALIZE_VDEVS, 3883 &vdev_guids) != 0) { 3884 return (SET_ERROR(EINVAL)); 3885 } 3886 3887 for (nvpair_t *pair = nvlist_next_nvpair(vdev_guids, NULL); 3888 pair != NULL; pair = nvlist_next_nvpair(vdev_guids, pair)) { 3889 uint64_t vdev_guid; 3890 if (nvpair_value_uint64(pair, &vdev_guid) != 0) { 3891 return (SET_ERROR(EINVAL)); 3892 } 3893 } 3894 3895 spa_t *spa; 3896 int error = spa_open(poolname, &spa, FTAG); 3897 if (error != 0) 3898 return (error); 3899 3900 nvlist_t *vdev_errlist = fnvlist_alloc(); 3901 int total_errors = spa_vdev_initialize(spa, vdev_guids, cmd_type, 3902 vdev_errlist); 3903 3904 if (fnvlist_size(vdev_errlist) > 0) { 3905 fnvlist_add_nvlist(outnvl, ZPOOL_INITIALIZE_VDEVS, 3906 vdev_errlist); 3907 } 3908 fnvlist_free(vdev_errlist); 3909 3910 spa_close(spa, FTAG); 3911 return (total_errors > 0 ? EINVAL : 0); 3912 } 3913 3914 /* 3915 * innvl: { 3916 * "trim_command" -> POOL_TRIM_{CANCEL|START|SUSPEND} (uint64) 3917 * "trim_vdevs": { -> guids to TRIM (nvlist) 3918 * "vdev_path_1": vdev_guid_1, (uint64), 3919 * "vdev_path_2": vdev_guid_2, (uint64), 3920 * ... 3921 * }, 3922 * "trim_rate" -> Target TRIM rate in bytes/sec. 3923 * "trim_secure" -> Set to request a secure TRIM. 3924 * } 3925 * 3926 * outnvl: { 3927 * "trim_vdevs": { -> TRIM errors (nvlist) 3928 * "vdev_path_1": errno, see function body for possible errnos (uint64) 3929 * "vdev_path_2": errno, ... (uint64) 3930 * ... 3931 * } 3932 * } 3933 * 3934 * EINVAL is returned for an unknown command or if any of the provided vdev 3935 * guids have be specified with a type other than uint64. 3936 */ 3937 3938 static int 3939 zfs_ioc_pool_trim(const char *poolname, nvlist_t *innvl, nvlist_t *outnvl) 3940 { 3941 uint64_t cmd_type; 3942 if (nvlist_lookup_uint64(innvl, ZPOOL_TRIM_COMMAND, &cmd_type) != 0) 3943 return (SET_ERROR(EINVAL)); 3944 3945 if (!(cmd_type == POOL_TRIM_CANCEL || 3946 cmd_type == POOL_TRIM_START || 3947 cmd_type == POOL_TRIM_SUSPEND)) { 3948 return (SET_ERROR(EINVAL)); 3949 } 3950 3951 nvlist_t *vdev_guids; 3952 if (nvlist_lookup_nvlist(innvl, ZPOOL_TRIM_VDEVS, &vdev_guids) != 0) 3953 return (SET_ERROR(EINVAL)); 3954 3955 for (nvpair_t *pair = nvlist_next_nvpair(vdev_guids, NULL); 3956 pair != NULL; pair = nvlist_next_nvpair(vdev_guids, pair)) { 3957 uint64_t vdev_guid; 3958 if (nvpair_value_uint64(pair, &vdev_guid) != 0) { 3959 return (SET_ERROR(EINVAL)); 3960 } 3961 } 3962 3963 /* Optional, defaults to maximum rate when not provided */ 3964 uint64_t rate; 3965 if (nvlist_lookup_uint64(innvl, ZPOOL_TRIM_RATE, &rate) != 0) 3966 rate = 0; 3967 3968 /* Optional, defaults to standard TRIM when not provided */ 3969 boolean_t secure; 3970 if (nvlist_lookup_boolean_value(innvl, ZPOOL_TRIM_SECURE, 3971 &secure) != 0) { 3972 secure = B_FALSE; 3973 } 3974 3975 spa_t *spa; 3976 int error = spa_open(poolname, &spa, FTAG); 3977 if (error != 0) 3978 return (error); 3979 3980 nvlist_t *vdev_errlist = fnvlist_alloc(); 3981 int total_errors = spa_vdev_trim(spa, vdev_guids, cmd_type, 3982 rate, !!zfs_trim_metaslab_skip, secure, vdev_errlist); 3983 3984 if (fnvlist_size(vdev_errlist) > 0) 3985 fnvlist_add_nvlist(outnvl, ZPOOL_TRIM_VDEVS, vdev_errlist); 3986 3987 fnvlist_free(vdev_errlist); 3988 3989 spa_close(spa, FTAG); 3990 return (total_errors > 0 ? EINVAL : 0); 3991 } 3992 3993 /* 3994 * fsname is name of dataset to rollback (to most recent snapshot) 3995 * 3996 * innvl may contain name of expected target snapshot 3997 * 3998 * outnvl: "target" -> name of most recent snapshot 3999 * } 4000 */ 4001 /* ARGSUSED */ 4002 static int 4003 zfs_ioc_rollback(const char *fsname, nvlist_t *innvl, nvlist_t *outnvl) 4004 { 4005 zfsvfs_t *zfsvfs; 4006 char *target = NULL; 4007 int error; 4008 4009 (void) nvlist_lookup_string(innvl, "target", &target); 4010 if (target != NULL) { 4011 const char *cp = strchr(target, '@'); 4012 4013 /* 4014 * The snap name must contain an @, and the part after it must 4015 * contain only valid characters. 4016 */ 4017 if (cp == NULL || 4018 zfs_component_namecheck(cp + 1, NULL, NULL) != 0) 4019 return (SET_ERROR(EINVAL)); 4020 } 4021 4022 if (getzfsvfs(fsname, &zfsvfs) == 0) { 4023 dsl_dataset_t *ds; 4024 4025 ds = dmu_objset_ds(zfsvfs->z_os); 4026 error = zfs_suspend_fs(zfsvfs); 4027 if (error == 0) { 4028 int resume_err; 4029 4030 error = dsl_dataset_rollback(fsname, target, zfsvfs, 4031 outnvl); 4032 resume_err = zfs_resume_fs(zfsvfs, ds); 4033 error = error ? error : resume_err; 4034 } 4035 VFS_RELE(zfsvfs->z_vfs); 4036 } else { 4037 error = dsl_dataset_rollback(fsname, target, NULL, outnvl); 4038 } 4039 return (error); 4040 } 4041 4042 static int 4043 recursive_unmount(const char *fsname, void *arg) 4044 { 4045 const char *snapname = arg; 4046 char fullname[ZFS_MAX_DATASET_NAME_LEN]; 4047 4048 (void) snprintf(fullname, sizeof (fullname), "%s@%s", fsname, snapname); 4049 zfs_unmount_snap(fullname); 4050 4051 return (0); 4052 } 4053 4054 /* 4055 * inputs: 4056 * zc_name old name of dataset 4057 * zc_value new name of dataset 4058 * zc_cookie recursive flag (only valid for snapshots) 4059 * 4060 * outputs: none 4061 */ 4062 static int 4063 zfs_ioc_rename(zfs_cmd_t *zc) 4064 { 4065 objset_t *os; 4066 dmu_objset_type_t ost; 4067 boolean_t recursive = zc->zc_cookie & 1; 4068 char *at; 4069 int err; 4070 4071 /* "zfs rename" from and to ...%recv datasets should both fail */ 4072 zc->zc_name[sizeof (zc->zc_name) - 1] = '\0'; 4073 zc->zc_value[sizeof (zc->zc_value) - 1] = '\0'; 4074 if (dataset_namecheck(zc->zc_name, NULL, NULL) != 0 || 4075 dataset_namecheck(zc->zc_value, NULL, NULL) != 0 || 4076 strchr(zc->zc_name, '%') || strchr(zc->zc_value, '%')) 4077 return (SET_ERROR(EINVAL)); 4078 4079 err = dmu_objset_hold(zc->zc_name, FTAG, &os); 4080 if (err != 0) 4081 return (err); 4082 ost = dmu_objset_type(os); 4083 dmu_objset_rele(os, FTAG); 4084 4085 at = strchr(zc->zc_name, '@'); 4086 if (at != NULL) { 4087 /* snaps must be in same fs */ 4088 int error; 4089 4090 if (strncmp(zc->zc_name, zc->zc_value, at - zc->zc_name + 1)) 4091 return (SET_ERROR(EXDEV)); 4092 *at = '\0'; 4093 if (ost == DMU_OST_ZFS) { 4094 error = dmu_objset_find(zc->zc_name, 4095 recursive_unmount, at + 1, 4096 recursive ? DS_FIND_CHILDREN : 0); 4097 if (error != 0) { 4098 *at = '@'; 4099 return (error); 4100 } 4101 } 4102 error = dsl_dataset_rename_snapshot(zc->zc_name, 4103 at + 1, strchr(zc->zc_value, '@') + 1, recursive); 4104 *at = '@'; 4105 4106 return (error); 4107 } else { 4108 if (ost == DMU_OST_ZVOL) 4109 (void) zvol_remove_minor(zc->zc_name); 4110 return (dsl_dir_rename(zc->zc_name, zc->zc_value)); 4111 } 4112 } 4113 4114 static int 4115 zfs_check_settable(const char *dsname, nvpair_t *pair, cred_t *cr) 4116 { 4117 const char *propname = nvpair_name(pair); 4118 boolean_t issnap = (strchr(dsname, '@') != NULL); 4119 zfs_prop_t prop = zfs_name_to_prop(propname); 4120 uint64_t intval; 4121 int err; 4122 4123 if (prop == ZPROP_INVAL) { 4124 if (zfs_prop_user(propname)) { 4125 if (err = zfs_secpolicy_write_perms(dsname, 4126 ZFS_DELEG_PERM_USERPROP, cr)) 4127 return (err); 4128 return (0); 4129 } 4130 4131 if (!issnap && zfs_prop_userquota(propname)) { 4132 const char *perm = NULL; 4133 const char *uq_prefix = 4134 zfs_userquota_prop_prefixes[ZFS_PROP_USERQUOTA]; 4135 const char *gq_prefix = 4136 zfs_userquota_prop_prefixes[ZFS_PROP_GROUPQUOTA]; 4137 const char *uiq_prefix = 4138 zfs_userquota_prop_prefixes[ZFS_PROP_USEROBJQUOTA]; 4139 const char *giq_prefix = 4140 zfs_userquota_prop_prefixes[ZFS_PROP_GROUPOBJQUOTA]; 4141 const char *pq_prefix = 4142 zfs_userquota_prop_prefixes[ZFS_PROP_PROJECTQUOTA]; 4143 const char *piq_prefix = zfs_userquota_prop_prefixes[\ 4144 ZFS_PROP_PROJECTOBJQUOTA]; 4145 4146 if (strncmp(propname, uq_prefix, 4147 strlen(uq_prefix)) == 0) { 4148 perm = ZFS_DELEG_PERM_USERQUOTA; 4149 } else if (strncmp(propname, uiq_prefix, 4150 strlen(uiq_prefix)) == 0) { 4151 perm = ZFS_DELEG_PERM_USEROBJQUOTA; 4152 } else if (strncmp(propname, gq_prefix, 4153 strlen(gq_prefix)) == 0) { 4154 perm = ZFS_DELEG_PERM_GROUPQUOTA; 4155 } else if (strncmp(propname, giq_prefix, 4156 strlen(giq_prefix)) == 0) { 4157 perm = ZFS_DELEG_PERM_GROUPOBJQUOTA; 4158 } else if (strncmp(propname, pq_prefix, 4159 strlen(pq_prefix)) == 0) { 4160 perm = ZFS_DELEG_PERM_PROJECTQUOTA; 4161 } else if (strncmp(propname, piq_prefix, 4162 strlen(piq_prefix)) == 0) { 4163 perm = ZFS_DELEG_PERM_PROJECTOBJQUOTA; 4164 } else { 4165 /* {USER|GROUP|PROJECT}USED are read-only */ 4166 return (SET_ERROR(EINVAL)); 4167 } 4168 4169 if (err = zfs_secpolicy_write_perms(dsname, perm, cr)) 4170 return (err); 4171 return (0); 4172 } 4173 4174 return (SET_ERROR(EINVAL)); 4175 } 4176 4177 if (issnap) 4178 return (SET_ERROR(EINVAL)); 4179 4180 if (nvpair_type(pair) == DATA_TYPE_NVLIST) { 4181 /* 4182 * dsl_prop_get_all_impl() returns properties in this 4183 * format. 4184 */ 4185 nvlist_t *attrs; 4186 VERIFY(nvpair_value_nvlist(pair, &attrs) == 0); 4187 VERIFY(nvlist_lookup_nvpair(attrs, ZPROP_VALUE, 4188 &pair) == 0); 4189 } 4190 4191 /* 4192 * Check that this value is valid for this pool version 4193 */ 4194 switch (prop) { 4195 case ZFS_PROP_COMPRESSION: 4196 /* 4197 * If the user specified gzip compression, make sure 4198 * the SPA supports it. We ignore any errors here since 4199 * we'll catch them later. 4200 */ 4201 if (nvpair_value_uint64(pair, &intval) == 0) { 4202 if (intval >= ZIO_COMPRESS_GZIP_1 && 4203 intval <= ZIO_COMPRESS_GZIP_9 && 4204 zfs_earlier_version(dsname, 4205 SPA_VERSION_GZIP_COMPRESSION)) { 4206 return (SET_ERROR(ENOTSUP)); 4207 } 4208 4209 if (intval == ZIO_COMPRESS_ZLE && 4210 zfs_earlier_version(dsname, 4211 SPA_VERSION_ZLE_COMPRESSION)) 4212 return (SET_ERROR(ENOTSUP)); 4213 4214 if (intval == ZIO_COMPRESS_LZ4) { 4215 spa_t *spa; 4216 4217 if ((err = spa_open(dsname, &spa, FTAG)) != 0) 4218 return (err); 4219 4220 if (!spa_feature_is_enabled(spa, 4221 SPA_FEATURE_LZ4_COMPRESS)) { 4222 spa_close(spa, FTAG); 4223 return (SET_ERROR(ENOTSUP)); 4224 } 4225 spa_close(spa, FTAG); 4226 } 4227 4228 /* 4229 * If this is a bootable dataset then 4230 * verify that the compression algorithm 4231 * is supported for booting. We must return 4232 * something other than ENOTSUP since it 4233 * implies a downrev pool version. 4234 */ 4235 if (zfs_is_bootfs(dsname) && 4236 !BOOTFS_COMPRESS_VALID(intval)) { 4237 return (SET_ERROR(ERANGE)); 4238 } 4239 } 4240 break; 4241 4242 case ZFS_PROP_COPIES: 4243 if (zfs_earlier_version(dsname, SPA_VERSION_DITTO_BLOCKS)) 4244 return (SET_ERROR(ENOTSUP)); 4245 break; 4246 4247 case ZFS_PROP_RECORDSIZE: 4248 /* Record sizes above 128k need the feature to be enabled */ 4249 if (nvpair_value_uint64(pair, &intval) == 0 && 4250 intval > SPA_OLD_MAXBLOCKSIZE) { 4251 spa_t *spa; 4252 4253 /* 4254 * We don't allow setting the property above 1MB, 4255 * unless the tunable has been changed. 4256 */ 4257 if (intval > zfs_max_recordsize || 4258 intval > SPA_MAXBLOCKSIZE) 4259 return (SET_ERROR(ERANGE)); 4260 4261 if ((err = spa_open(dsname, &spa, FTAG)) != 0) 4262 return (err); 4263 4264 if (!spa_feature_is_enabled(spa, 4265 SPA_FEATURE_LARGE_BLOCKS)) { 4266 spa_close(spa, FTAG); 4267 return (SET_ERROR(ENOTSUP)); 4268 } 4269 spa_close(spa, FTAG); 4270 } 4271 break; 4272 4273 case ZFS_PROP_DNODESIZE: 4274 /* Dnode sizes above 512 need the feature to be enabled */ 4275 if (nvpair_value_uint64(pair, &intval) == 0 && 4276 intval != ZFS_DNSIZE_LEGACY) { 4277 spa_t *spa; 4278 4279 if ((err = spa_open(dsname, &spa, FTAG)) != 0) 4280 return (err); 4281 4282 if (!spa_feature_is_enabled(spa, 4283 SPA_FEATURE_LARGE_DNODE)) { 4284 spa_close(spa, FTAG); 4285 return (SET_ERROR(ENOTSUP)); 4286 } 4287 spa_close(spa, FTAG); 4288 } 4289 break; 4290 4291 case ZFS_PROP_SPECIAL_SMALL_BLOCKS: 4292 /* 4293 * This property could require the allocation classes 4294 * feature to be active for setting, however we allow 4295 * it so that tests of settable properties succeed. 4296 * The CLI will issue a warning in this case. 4297 */ 4298 break; 4299 4300 case ZFS_PROP_SHARESMB: 4301 if (zpl_earlier_version(dsname, ZPL_VERSION_FUID)) 4302 return (SET_ERROR(ENOTSUP)); 4303 break; 4304 4305 case ZFS_PROP_ACLINHERIT: 4306 if (nvpair_type(pair) == DATA_TYPE_UINT64 && 4307 nvpair_value_uint64(pair, &intval) == 0) { 4308 if (intval == ZFS_ACL_PASSTHROUGH_X && 4309 zfs_earlier_version(dsname, 4310 SPA_VERSION_PASSTHROUGH_X)) 4311 return (SET_ERROR(ENOTSUP)); 4312 } 4313 break; 4314 4315 case ZFS_PROP_CHECKSUM: 4316 case ZFS_PROP_DEDUP: 4317 { 4318 spa_feature_t feature; 4319 spa_t *spa; 4320 4321 /* dedup feature version checks */ 4322 if (prop == ZFS_PROP_DEDUP && 4323 zfs_earlier_version(dsname, SPA_VERSION_DEDUP)) 4324 return (SET_ERROR(ENOTSUP)); 4325 4326 if (nvpair_value_uint64(pair, &intval) != 0) 4327 return (SET_ERROR(EINVAL)); 4328 4329 /* check prop value is enabled in features */ 4330 feature = zio_checksum_to_feature(intval & ZIO_CHECKSUM_MASK); 4331 if (feature == SPA_FEATURE_NONE) 4332 break; 4333 4334 if ((err = spa_open(dsname, &spa, FTAG)) != 0) 4335 return (err); 4336 4337 if (!spa_feature_is_enabled(spa, feature)) { 4338 spa_close(spa, FTAG); 4339 return (SET_ERROR(ENOTSUP)); 4340 } 4341 spa_close(spa, FTAG); 4342 break; 4343 } 4344 } 4345 4346 return (zfs_secpolicy_setprop(dsname, prop, pair, CRED())); 4347 } 4348 4349 /* 4350 * Checks for a race condition to make sure we don't increment a feature flag 4351 * multiple times. 4352 */ 4353 static int 4354 zfs_prop_activate_feature_check(void *arg, dmu_tx_t *tx) 4355 { 4356 spa_t *spa = dmu_tx_pool(tx)->dp_spa; 4357 spa_feature_t *featurep = arg; 4358 4359 if (!spa_feature_is_active(spa, *featurep)) 4360 return (0); 4361 else 4362 return (SET_ERROR(EBUSY)); 4363 } 4364 4365 /* 4366 * The callback invoked on feature activation in the sync task caused by 4367 * zfs_prop_activate_feature. 4368 */ 4369 static void 4370 zfs_prop_activate_feature_sync(void *arg, dmu_tx_t *tx) 4371 { 4372 spa_t *spa = dmu_tx_pool(tx)->dp_spa; 4373 spa_feature_t *featurep = arg; 4374 4375 spa_feature_incr(spa, *featurep, tx); 4376 } 4377 4378 /* 4379 * Activates a feature on a pool in response to a property setting. This 4380 * creates a new sync task which modifies the pool to reflect the feature 4381 * as being active. 4382 */ 4383 static int 4384 zfs_prop_activate_feature(spa_t *spa, spa_feature_t feature) 4385 { 4386 int err; 4387 4388 /* EBUSY here indicates that the feature is already active */ 4389 err = dsl_sync_task(spa_name(spa), 4390 zfs_prop_activate_feature_check, zfs_prop_activate_feature_sync, 4391 &feature, 2, ZFS_SPACE_CHECK_RESERVED); 4392 4393 if (err != 0 && err != EBUSY) 4394 return (err); 4395 else 4396 return (0); 4397 } 4398 4399 /* 4400 * Removes properties from the given props list that fail permission checks 4401 * needed to clear them and to restore them in case of a receive error. For each 4402 * property, make sure we have both set and inherit permissions. 4403 * 4404 * Returns the first error encountered if any permission checks fail. If the 4405 * caller provides a non-NULL errlist, it also gives the complete list of names 4406 * of all the properties that failed a permission check along with the 4407 * corresponding error numbers. The caller is responsible for freeing the 4408 * returned errlist. 4409 * 4410 * If every property checks out successfully, zero is returned and the list 4411 * pointed at by errlist is NULL. 4412 */ 4413 static int 4414 zfs_check_clearable(char *dataset, nvlist_t *props, nvlist_t **errlist) 4415 { 4416 zfs_cmd_t *zc; 4417 nvpair_t *pair, *next_pair; 4418 nvlist_t *errors; 4419 int err, rv = 0; 4420 4421 if (props == NULL) 4422 return (0); 4423 4424 VERIFY(nvlist_alloc(&errors, NV_UNIQUE_NAME, KM_SLEEP) == 0); 4425 4426 zc = kmem_alloc(sizeof (zfs_cmd_t), KM_SLEEP); 4427 (void) strcpy(zc->zc_name, dataset); 4428 pair = nvlist_next_nvpair(props, NULL); 4429 while (pair != NULL) { 4430 next_pair = nvlist_next_nvpair(props, pair); 4431 4432 (void) strcpy(zc->zc_value, nvpair_name(pair)); 4433 if ((err = zfs_check_settable(dataset, pair, CRED())) != 0 || 4434 (err = zfs_secpolicy_inherit_prop(zc, NULL, CRED())) != 0) { 4435 VERIFY(nvlist_remove_nvpair(props, pair) == 0); 4436 VERIFY(nvlist_add_int32(errors, 4437 zc->zc_value, err) == 0); 4438 } 4439 pair = next_pair; 4440 } 4441 kmem_free(zc, sizeof (zfs_cmd_t)); 4442 4443 if ((pair = nvlist_next_nvpair(errors, NULL)) == NULL) { 4444 nvlist_free(errors); 4445 errors = NULL; 4446 } else { 4447 VERIFY(nvpair_value_int32(pair, &rv) == 0); 4448 } 4449 4450 if (errlist == NULL) 4451 nvlist_free(errors); 4452 else 4453 *errlist = errors; 4454 4455 return (rv); 4456 } 4457 4458 static boolean_t 4459 propval_equals(nvpair_t *p1, nvpair_t *p2) 4460 { 4461 if (nvpair_type(p1) == DATA_TYPE_NVLIST) { 4462 /* dsl_prop_get_all_impl() format */ 4463 nvlist_t *attrs; 4464 VERIFY(nvpair_value_nvlist(p1, &attrs) == 0); 4465 VERIFY(nvlist_lookup_nvpair(attrs, ZPROP_VALUE, 4466 &p1) == 0); 4467 } 4468 4469 if (nvpair_type(p2) == DATA_TYPE_NVLIST) { 4470 nvlist_t *attrs; 4471 VERIFY(nvpair_value_nvlist(p2, &attrs) == 0); 4472 VERIFY(nvlist_lookup_nvpair(attrs, ZPROP_VALUE, 4473 &p2) == 0); 4474 } 4475 4476 if (nvpair_type(p1) != nvpair_type(p2)) 4477 return (B_FALSE); 4478 4479 if (nvpair_type(p1) == DATA_TYPE_STRING) { 4480 char *valstr1, *valstr2; 4481 4482 VERIFY(nvpair_value_string(p1, (char **)&valstr1) == 0); 4483 VERIFY(nvpair_value_string(p2, (char **)&valstr2) == 0); 4484 return (strcmp(valstr1, valstr2) == 0); 4485 } else { 4486 uint64_t intval1, intval2; 4487 4488 VERIFY(nvpair_value_uint64(p1, &intval1) == 0); 4489 VERIFY(nvpair_value_uint64(p2, &intval2) == 0); 4490 return (intval1 == intval2); 4491 } 4492 } 4493 4494 /* 4495 * Remove properties from props if they are not going to change (as determined 4496 * by comparison with origprops). Remove them from origprops as well, since we 4497 * do not need to clear or restore properties that won't change. 4498 */ 4499 static void 4500 props_reduce(nvlist_t *props, nvlist_t *origprops) 4501 { 4502 nvpair_t *pair, *next_pair; 4503 4504 if (origprops == NULL) 4505 return; /* all props need to be received */ 4506 4507 pair = nvlist_next_nvpair(props, NULL); 4508 while (pair != NULL) { 4509 const char *propname = nvpair_name(pair); 4510 nvpair_t *match; 4511 4512 next_pair = nvlist_next_nvpair(props, pair); 4513 4514 if ((nvlist_lookup_nvpair(origprops, propname, 4515 &match) != 0) || !propval_equals(pair, match)) 4516 goto next; /* need to set received value */ 4517 4518 /* don't clear the existing received value */ 4519 (void) nvlist_remove_nvpair(origprops, match); 4520 /* don't bother receiving the property */ 4521 (void) nvlist_remove_nvpair(props, pair); 4522 next: 4523 pair = next_pair; 4524 } 4525 } 4526 4527 /* 4528 * Extract properties that cannot be set PRIOR to the receipt of a dataset. 4529 * For example, refquota cannot be set until after the receipt of a dataset, 4530 * because in replication streams, an older/earlier snapshot may exceed the 4531 * refquota. We want to receive the older/earlier snapshot, but setting 4532 * refquota pre-receipt will set the dsl's ACTUAL quota, which will prevent 4533 * the older/earlier snapshot from being received (with EDQUOT). 4534 * 4535 * The ZFS test "zfs_receive_011_pos" demonstrates such a scenario. 4536 * 4537 * libzfs will need to be judicious handling errors encountered by props 4538 * extracted by this function. 4539 */ 4540 static nvlist_t * 4541 extract_delay_props(nvlist_t *props) 4542 { 4543 nvlist_t *delayprops; 4544 nvpair_t *nvp, *tmp; 4545 static const zfs_prop_t delayable[] = { 4546 ZFS_PROP_REFQUOTA, 4547 ZFS_PROP_KEYLOCATION, 4548 0 4549 }; 4550 int i; 4551 4552 VERIFY(nvlist_alloc(&delayprops, NV_UNIQUE_NAME, KM_SLEEP) == 0); 4553 4554 for (nvp = nvlist_next_nvpair(props, NULL); nvp != NULL; 4555 nvp = nvlist_next_nvpair(props, nvp)) { 4556 /* 4557 * strcmp() is safe because zfs_prop_to_name() always returns 4558 * a bounded string. 4559 */ 4560 for (i = 0; delayable[i] != 0; i++) { 4561 if (strcmp(zfs_prop_to_name(delayable[i]), 4562 nvpair_name(nvp)) == 0) { 4563 break; 4564 } 4565 } 4566 if (delayable[i] != 0) { 4567 tmp = nvlist_prev_nvpair(props, nvp); 4568 VERIFY(nvlist_add_nvpair(delayprops, nvp) == 0); 4569 VERIFY(nvlist_remove_nvpair(props, nvp) == 0); 4570 nvp = tmp; 4571 } 4572 } 4573 4574 if (nvlist_empty(delayprops)) { 4575 nvlist_free(delayprops); 4576 delayprops = NULL; 4577 } 4578 return (delayprops); 4579 } 4580 4581 #ifdef DEBUG 4582 static boolean_t zfs_ioc_recv_inject_err; 4583 #endif 4584 4585 /* 4586 * nvlist 'errors' is always allocated. It will contain descriptions of 4587 * encountered errors, if any. It's the callers responsibility to free. 4588 */ 4589 static int 4590 zfs_ioc_recv_impl(char *tofs, char *tosnap, char *origin, nvlist_t *recvprops, 4591 nvlist_t *localprops, nvlist_t *hidden_args, boolean_t force, 4592 boolean_t resumable, int input_fd, dmu_replay_record_t *begin_record, 4593 int cleanup_fd, uint64_t *read_bytes, uint64_t *errflags, 4594 uint64_t *action_handle, nvlist_t **errors) 4595 { 4596 dmu_recv_cookie_t drc; 4597 int error = 0; 4598 int props_error = 0; 4599 offset_t off; 4600 nvlist_t *local_delayprops = NULL; 4601 nvlist_t *recv_delayprops = NULL; 4602 nvlist_t *origprops = NULL; /* existing properties */ 4603 nvlist_t *origrecvd = NULL; /* existing received properties */ 4604 boolean_t first_recvd_props = B_FALSE; 4605 file_t *input_fp; 4606 4607 *read_bytes = 0; 4608 *errflags = 0; 4609 *errors = fnvlist_alloc(); 4610 4611 input_fp = getf(input_fd); 4612 if (input_fp == NULL) 4613 return (SET_ERROR(EBADF)); 4614 4615 error = dmu_recv_begin(tofs, tosnap, begin_record, force, 4616 resumable, localprops, hidden_args, origin, &drc); 4617 if (error != 0) 4618 goto out; 4619 4620 /* 4621 * Set properties before we receive the stream so that they are applied 4622 * to the new data. Note that we must call dmu_recv_stream() if 4623 * dmu_recv_begin() succeeds. 4624 */ 4625 if (recvprops != NULL && !drc.drc_newfs) { 4626 if (spa_version(dsl_dataset_get_spa(drc.drc_ds)) >= 4627 SPA_VERSION_RECVD_PROPS && 4628 !dsl_prop_get_hasrecvd(tofs)) 4629 first_recvd_props = B_TRUE; 4630 4631 /* 4632 * If new received properties are supplied, they are to 4633 * completely replace the existing received properties, 4634 * so stash away the existing ones. 4635 */ 4636 if (dsl_prop_get_received(tofs, &origrecvd) == 0) { 4637 nvlist_t *errlist = NULL; 4638 /* 4639 * Don't bother writing a property if its value won't 4640 * change (and avoid the unnecessary security checks). 4641 * 4642 * The first receive after SPA_VERSION_RECVD_PROPS is a 4643 * special case where we blow away all local properties 4644 * regardless. 4645 */ 4646 if (!first_recvd_props) 4647 props_reduce(recvprops, origrecvd); 4648 if (zfs_check_clearable(tofs, origrecvd, &errlist) != 0) 4649 (void) nvlist_merge(*errors, errlist, 0); 4650 nvlist_free(errlist); 4651 4652 if (clear_received_props(tofs, origrecvd, 4653 first_recvd_props ? NULL : recvprops) != 0) 4654 *errflags |= ZPROP_ERR_NOCLEAR; 4655 } else { 4656 *errflags |= ZPROP_ERR_NOCLEAR; 4657 } 4658 } 4659 4660 /* 4661 * Stash away existing properties so we can restore them on error unless 4662 * we're doing the first receive after SPA_VERSION_RECVD_PROPS, in which 4663 * case "origrecvd" will take care of that. 4664 */ 4665 if (localprops != NULL && !drc.drc_newfs && !first_recvd_props) { 4666 objset_t *os; 4667 if (dmu_objset_hold(tofs, FTAG, &os) == 0) { 4668 if (dsl_prop_get_all(os, &origprops) != 0) { 4669 *errflags |= ZPROP_ERR_NOCLEAR; 4670 } 4671 dmu_objset_rele(os, FTAG); 4672 } else { 4673 *errflags |= ZPROP_ERR_NOCLEAR; 4674 } 4675 } 4676 4677 if (recvprops != NULL) { 4678 props_error = dsl_prop_set_hasrecvd(tofs); 4679 4680 if (props_error == 0) { 4681 recv_delayprops = extract_delay_props(recvprops); 4682 (void) zfs_set_prop_nvlist(tofs, ZPROP_SRC_RECEIVED, 4683 recvprops, *errors); 4684 } 4685 } 4686 4687 if (localprops != NULL) { 4688 nvlist_t *oprops = fnvlist_alloc(); 4689 nvlist_t *xprops = fnvlist_alloc(); 4690 nvpair_t *nvp = NULL; 4691 4692 while ((nvp = nvlist_next_nvpair(localprops, nvp)) != NULL) { 4693 if (nvpair_type(nvp) == DATA_TYPE_BOOLEAN) { 4694 /* -x property */ 4695 const char *name = nvpair_name(nvp); 4696 zfs_prop_t prop = zfs_name_to_prop(name); 4697 if (prop != ZPROP_INVAL) { 4698 if (!zfs_prop_inheritable(prop)) 4699 continue; 4700 } else if (!zfs_prop_user(name)) 4701 continue; 4702 fnvlist_add_boolean(xprops, name); 4703 } else { 4704 /* -o property=value */ 4705 fnvlist_add_nvpair(oprops, nvp); 4706 } 4707 } 4708 4709 local_delayprops = extract_delay_props(oprops); 4710 (void) zfs_set_prop_nvlist(tofs, ZPROP_SRC_LOCAL, 4711 oprops, *errors); 4712 (void) zfs_set_prop_nvlist(tofs, ZPROP_SRC_INHERITED, 4713 xprops, *errors); 4714 4715 nvlist_free(oprops); 4716 nvlist_free(xprops); 4717 } 4718 4719 off = input_fp->f_offset; 4720 error = dmu_recv_stream(&drc, input_fp->f_vnode, &off, cleanup_fd, 4721 action_handle); 4722 4723 if (error == 0) { 4724 zfsvfs_t *zfsvfs = NULL; 4725 4726 if (getzfsvfs(tofs, &zfsvfs) == 0) { 4727 /* online recv */ 4728 dsl_dataset_t *ds; 4729 int end_err; 4730 4731 ds = dmu_objset_ds(zfsvfs->z_os); 4732 error = zfs_suspend_fs(zfsvfs); 4733 /* 4734 * If the suspend fails, then the recv_end will 4735 * likely also fail, and clean up after itself. 4736 */ 4737 end_err = dmu_recv_end(&drc, zfsvfs); 4738 if (error == 0) 4739 error = zfs_resume_fs(zfsvfs, ds); 4740 error = error ? error : end_err; 4741 VFS_RELE(zfsvfs->z_vfs); 4742 } else { 4743 error = dmu_recv_end(&drc, NULL); 4744 } 4745 4746 /* Set delayed properties now, after we're done receiving. */ 4747 if (recv_delayprops != NULL && error == 0) { 4748 (void) zfs_set_prop_nvlist(tofs, ZPROP_SRC_RECEIVED, 4749 recv_delayprops, *errors); 4750 } 4751 if (local_delayprops != NULL && error == 0) { 4752 (void) zfs_set_prop_nvlist(tofs, ZPROP_SRC_LOCAL, 4753 local_delayprops, *errors); 4754 } 4755 } 4756 4757 /* 4758 * Merge delayed props back in with initial props, in case 4759 * we're DEBUG and zfs_ioc_recv_inject_err is set (which means 4760 * we have to make sure clear_received_props() includes 4761 * the delayed properties). 4762 * 4763 * Since zfs_ioc_recv_inject_err is only in DEBUG kernels, 4764 * using ASSERT() will be just like a VERIFY. 4765 */ 4766 if (recv_delayprops != NULL) { 4767 ASSERT(nvlist_merge(recvprops, recv_delayprops, 0) == 0); 4768 nvlist_free(recv_delayprops); 4769 } 4770 if (local_delayprops != NULL) { 4771 ASSERT(nvlist_merge(localprops, local_delayprops, 0) == 0); 4772 nvlist_free(local_delayprops); 4773 } 4774 4775 *read_bytes = off - input_fp->f_offset; 4776 if (VOP_SEEK(input_fp->f_vnode, input_fp->f_offset, &off, NULL) == 0) 4777 input_fp->f_offset = off; 4778 4779 #ifdef DEBUG 4780 if (zfs_ioc_recv_inject_err) { 4781 zfs_ioc_recv_inject_err = B_FALSE; 4782 error = 1; 4783 } 4784 #endif 4785 4786 /* 4787 * On error, restore the original props. 4788 */ 4789 if (error != 0 && recvprops != NULL && !drc.drc_newfs) { 4790 if (clear_received_props(tofs, recvprops, NULL) != 0) { 4791 /* 4792 * We failed to clear the received properties. 4793 * Since we may have left a $recvd value on the 4794 * system, we can't clear the $hasrecvd flag. 4795 */ 4796 *errflags |= ZPROP_ERR_NORESTORE; 4797 } else if (first_recvd_props) { 4798 dsl_prop_unset_hasrecvd(tofs); 4799 } 4800 4801 if (origrecvd == NULL && !drc.drc_newfs) { 4802 /* We failed to stash the original properties. */ 4803 *errflags |= ZPROP_ERR_NORESTORE; 4804 } 4805 4806 /* 4807 * dsl_props_set() will not convert RECEIVED to LOCAL on or 4808 * after SPA_VERSION_RECVD_PROPS, so we need to specify LOCAL 4809 * explicitly if we're restoring local properties cleared in the 4810 * first new-style receive. 4811 */ 4812 if (origrecvd != NULL && 4813 zfs_set_prop_nvlist(tofs, (first_recvd_props ? 4814 ZPROP_SRC_LOCAL : ZPROP_SRC_RECEIVED), 4815 origrecvd, NULL) != 0) { 4816 /* 4817 * We stashed the original properties but failed to 4818 * restore them. 4819 */ 4820 *errflags |= ZPROP_ERR_NORESTORE; 4821 } 4822 } 4823 if (error != 0 && localprops != NULL && !drc.drc_newfs && 4824 !first_recvd_props) { 4825 nvlist_t *setprops; 4826 nvlist_t *inheritprops; 4827 nvpair_t *nvp; 4828 4829 if (origprops == NULL) { 4830 /* We failed to stash the original properties. */ 4831 *errflags |= ZPROP_ERR_NORESTORE; 4832 goto out; 4833 } 4834 4835 /* Restore original props */ 4836 setprops = fnvlist_alloc(); 4837 inheritprops = fnvlist_alloc(); 4838 nvp = NULL; 4839 while ((nvp = nvlist_next_nvpair(localprops, nvp)) != NULL) { 4840 const char *name = nvpair_name(nvp); 4841 const char *source; 4842 nvlist_t *attrs; 4843 4844 if (!nvlist_exists(origprops, name)) { 4845 /* 4846 * Property was not present or was explicitly 4847 * inherited before the receive, restore this. 4848 */ 4849 fnvlist_add_boolean(inheritprops, name); 4850 continue; 4851 } 4852 attrs = fnvlist_lookup_nvlist(origprops, name); 4853 source = fnvlist_lookup_string(attrs, ZPROP_SOURCE); 4854 4855 /* Skip received properties */ 4856 if (strcmp(source, ZPROP_SOURCE_VAL_RECVD) == 0) 4857 continue; 4858 4859 if (strcmp(source, tofs) == 0) { 4860 /* Property was locally set */ 4861 fnvlist_add_nvlist(setprops, name, attrs); 4862 } else { 4863 /* Property was implicitly inherited */ 4864 fnvlist_add_boolean(inheritprops, name); 4865 } 4866 } 4867 4868 if (zfs_set_prop_nvlist(tofs, ZPROP_SRC_LOCAL, setprops, 4869 NULL) != 0) 4870 *errflags |= ZPROP_ERR_NORESTORE; 4871 if (zfs_set_prop_nvlist(tofs, ZPROP_SRC_INHERITED, inheritprops, 4872 NULL) != 0) 4873 *errflags |= ZPROP_ERR_NORESTORE; 4874 4875 nvlist_free(setprops); 4876 nvlist_free(inheritprops); 4877 } 4878 out: 4879 releasef(input_fd); 4880 nvlist_free(origrecvd); 4881 nvlist_free(origprops); 4882 4883 if (error == 0) 4884 error = props_error; 4885 4886 return (error); 4887 } 4888 4889 /* 4890 * inputs: 4891 * zc_name name of containing filesystem 4892 * zc_nvlist_src{_size} nvlist of received properties to apply 4893 * zc_nvlist_conf{_size} nvlist of local properties to apply 4894 * zc_history_offset{_len} nvlist of hidden args { "wkeydata" -> value } 4895 * zc_value name of snapshot to create 4896 * zc_string name of clone origin (if DRR_FLAG_CLONE) 4897 * zc_cookie file descriptor to recv from 4898 * zc_begin_record the BEGIN record of the stream (not byteswapped) 4899 * zc_guid force flag 4900 * zc_cleanup_fd cleanup-on-exit file descriptor 4901 * zc_action_handle handle for this guid/ds mapping (or zero on first call) 4902 * zc_resumable if data is incomplete assume sender will resume 4903 * 4904 * outputs: 4905 * zc_cookie number of bytes read 4906 * zc_nvlist_dst{_size} error for each unapplied received property 4907 * zc_obj zprop_errflags_t 4908 * zc_action_handle handle for this guid/ds mapping 4909 */ 4910 static int 4911 zfs_ioc_recv(zfs_cmd_t *zc) 4912 { 4913 dmu_replay_record_t begin_record; 4914 nvlist_t *errors = NULL; 4915 nvlist_t *recvdprops = NULL; 4916 nvlist_t *localprops = NULL; 4917 nvlist_t *hidden_args = NULL; 4918 char *origin = NULL; 4919 char *tosnap; 4920 char tofs[ZFS_MAX_DATASET_NAME_LEN]; 4921 int error = 0; 4922 4923 if (dataset_namecheck(zc->zc_value, NULL, NULL) != 0 || 4924 strchr(zc->zc_value, '@') == NULL || 4925 strchr(zc->zc_value, '%')) 4926 return (SET_ERROR(EINVAL)); 4927 4928 (void) strlcpy(tofs, zc->zc_value, sizeof (tofs)); 4929 tosnap = strchr(tofs, '@'); 4930 *tosnap++ = '\0'; 4931 4932 if (zc->zc_nvlist_src != 0 && 4933 (error = get_nvlist(zc->zc_nvlist_src, zc->zc_nvlist_src_size, 4934 zc->zc_iflags, &recvdprops)) != 0) 4935 return (error); 4936 4937 if (zc->zc_nvlist_conf != 0 && 4938 (error = get_nvlist(zc->zc_nvlist_conf, zc->zc_nvlist_conf_size, 4939 zc->zc_iflags, &localprops)) != 0) 4940 return (error); 4941 4942 if (zc->zc_history_offset != 0 && 4943 (error = get_nvlist(zc->zc_history_offset, zc->zc_history_len, 4944 zc->zc_iflags, &hidden_args)) != 0) 4945 return (error); 4946 4947 if (zc->zc_string[0]) 4948 origin = zc->zc_string; 4949 4950 begin_record.drr_type = DRR_BEGIN; 4951 begin_record.drr_payloadlen = zc->zc_begin_record.drr_payloadlen; 4952 begin_record.drr_u.drr_begin = zc->zc_begin_record.drr_u.drr_begin; 4953 4954 error = zfs_ioc_recv_impl(tofs, tosnap, origin, recvdprops, localprops, 4955 hidden_args, zc->zc_guid, zc->zc_resumable, zc->zc_cookie, 4956 &begin_record, zc->zc_cleanup_fd, &zc->zc_cookie, &zc->zc_obj, 4957 &zc->zc_action_handle, &errors); 4958 nvlist_free(recvdprops); 4959 nvlist_free(localprops); 4960 4961 /* 4962 * Now that all props, initial and delayed, are set, report the prop 4963 * errors to the caller. 4964 */ 4965 if (zc->zc_nvlist_dst_size != 0 && errors != NULL && 4966 (nvlist_smush(errors, zc->zc_nvlist_dst_size) != 0 || 4967 put_nvlist(zc, errors) != 0)) { 4968 /* 4969 * Caller made zc->zc_nvlist_dst less than the minimum expected 4970 * size or supplied an invalid address. 4971 */ 4972 error = SET_ERROR(EINVAL); 4973 } 4974 4975 nvlist_free(errors); 4976 4977 return (error); 4978 } 4979 4980 /* 4981 * inputs: 4982 * zc_name name of snapshot to send 4983 * zc_cookie file descriptor to send stream to 4984 * zc_obj fromorigin flag (mutually exclusive with zc_fromobj) 4985 * zc_sendobj objsetid of snapshot to send 4986 * zc_fromobj objsetid of incremental fromsnap (may be zero) 4987 * zc_guid if set, estimate size of stream only. zc_cookie is ignored. 4988 * output size in zc_objset_type. 4989 * zc_flags lzc_send_flags 4990 * 4991 * outputs: 4992 * zc_objset_type estimated size, if zc_guid is set 4993 */ 4994 static int 4995 zfs_ioc_send(zfs_cmd_t *zc) 4996 { 4997 int error; 4998 offset_t off; 4999 boolean_t estimate = (zc->zc_guid != 0); 5000 boolean_t embedok = (zc->zc_flags & 0x1); 5001 boolean_t large_block_ok = (zc->zc_flags & 0x2); 5002 boolean_t compressok = (zc->zc_flags & 0x4); 5003 boolean_t rawok = (zc->zc_flags & 0x8); 5004 5005 if (zc->zc_obj != 0) { 5006 dsl_pool_t *dp; 5007 dsl_dataset_t *tosnap; 5008 5009 error = dsl_pool_hold(zc->zc_name, FTAG, &dp); 5010 if (error != 0) 5011 return (error); 5012 5013 error = dsl_dataset_hold_obj(dp, zc->zc_sendobj, FTAG, &tosnap); 5014 if (error != 0) { 5015 dsl_pool_rele(dp, FTAG); 5016 return (error); 5017 } 5018 5019 if (dsl_dir_is_clone(tosnap->ds_dir)) 5020 zc->zc_fromobj = 5021 dsl_dir_phys(tosnap->ds_dir)->dd_origin_obj; 5022 dsl_dataset_rele(tosnap, FTAG); 5023 dsl_pool_rele(dp, FTAG); 5024 } 5025 5026 if (estimate) { 5027 dsl_pool_t *dp; 5028 dsl_dataset_t *tosnap; 5029 dsl_dataset_t *fromsnap = NULL; 5030 5031 error = dsl_pool_hold(zc->zc_name, FTAG, &dp); 5032 if (error != 0) 5033 return (error); 5034 5035 error = dsl_dataset_hold_obj(dp, zc->zc_sendobj, 5036 FTAG, &tosnap); 5037 if (error != 0) { 5038 dsl_pool_rele(dp, FTAG); 5039 return (error); 5040 } 5041 5042 if (zc->zc_fromobj != 0) { 5043 error = dsl_dataset_hold_obj(dp, zc->zc_fromobj, 5044 FTAG, &fromsnap); 5045 if (error != 0) { 5046 dsl_dataset_rele(tosnap, FTAG); 5047 dsl_pool_rele(dp, FTAG); 5048 return (error); 5049 } 5050 } 5051 5052 error = dmu_send_estimate(tosnap, fromsnap, compressok || rawok, 5053 &zc->zc_objset_type); 5054 5055 if (fromsnap != NULL) 5056 dsl_dataset_rele(fromsnap, FTAG); 5057 dsl_dataset_rele(tosnap, FTAG); 5058 dsl_pool_rele(dp, FTAG); 5059 } else { 5060 file_t *fp = getf(zc->zc_cookie); 5061 if (fp == NULL) 5062 return (SET_ERROR(EBADF)); 5063 5064 off = fp->f_offset; 5065 error = dmu_send_obj(zc->zc_name, zc->zc_sendobj, 5066 zc->zc_fromobj, embedok, large_block_ok, compressok, rawok, 5067 zc->zc_cookie, fp->f_vnode, &off); 5068 5069 if (VOP_SEEK(fp->f_vnode, fp->f_offset, &off, NULL) == 0) 5070 fp->f_offset = off; 5071 releasef(zc->zc_cookie); 5072 } 5073 return (error); 5074 } 5075 5076 /* 5077 * inputs: 5078 * zc_name name of snapshot on which to report progress 5079 * zc_cookie file descriptor of send stream 5080 * 5081 * outputs: 5082 * zc_cookie number of bytes written in send stream thus far 5083 */ 5084 static int 5085 zfs_ioc_send_progress(zfs_cmd_t *zc) 5086 { 5087 dsl_pool_t *dp; 5088 dsl_dataset_t *ds; 5089 dmu_sendarg_t *dsp = NULL; 5090 int error; 5091 5092 error = dsl_pool_hold(zc->zc_name, FTAG, &dp); 5093 if (error != 0) 5094 return (error); 5095 5096 error = dsl_dataset_hold(dp, zc->zc_name, FTAG, &ds); 5097 if (error != 0) { 5098 dsl_pool_rele(dp, FTAG); 5099 return (error); 5100 } 5101 5102 mutex_enter(&ds->ds_sendstream_lock); 5103 5104 /* 5105 * Iterate over all the send streams currently active on this dataset. 5106 * If there's one which matches the specified file descriptor _and_ the 5107 * stream was started by the current process, return the progress of 5108 * that stream. 5109 */ 5110 for (dsp = list_head(&ds->ds_sendstreams); dsp != NULL; 5111 dsp = list_next(&ds->ds_sendstreams, dsp)) { 5112 if (dsp->dsa_outfd == zc->zc_cookie && 5113 dsp->dsa_proc == curproc) 5114 break; 5115 } 5116 5117 if (dsp != NULL) 5118 zc->zc_cookie = *(dsp->dsa_off); 5119 else 5120 error = SET_ERROR(ENOENT); 5121 5122 mutex_exit(&ds->ds_sendstream_lock); 5123 dsl_dataset_rele(ds, FTAG); 5124 dsl_pool_rele(dp, FTAG); 5125 return (error); 5126 } 5127 5128 static int 5129 zfs_ioc_inject_fault(zfs_cmd_t *zc) 5130 { 5131 int id, error; 5132 5133 error = zio_inject_fault(zc->zc_name, (int)zc->zc_guid, &id, 5134 &zc->zc_inject_record); 5135 5136 if (error == 0) 5137 zc->zc_guid = (uint64_t)id; 5138 5139 return (error); 5140 } 5141 5142 static int 5143 zfs_ioc_clear_fault(zfs_cmd_t *zc) 5144 { 5145 return (zio_clear_fault((int)zc->zc_guid)); 5146 } 5147 5148 static int 5149 zfs_ioc_inject_list_next(zfs_cmd_t *zc) 5150 { 5151 int id = (int)zc->zc_guid; 5152 int error; 5153 5154 error = zio_inject_list_next(&id, zc->zc_name, sizeof (zc->zc_name), 5155 &zc->zc_inject_record); 5156 5157 zc->zc_guid = id; 5158 5159 return (error); 5160 } 5161 5162 static int 5163 zfs_ioc_error_log(zfs_cmd_t *zc) 5164 { 5165 spa_t *spa; 5166 int error; 5167 size_t count = (size_t)zc->zc_nvlist_dst_size; 5168 5169 if ((error = spa_open(zc->zc_name, &spa, FTAG)) != 0) 5170 return (error); 5171 5172 error = spa_get_errlog(spa, (void *)(uintptr_t)zc->zc_nvlist_dst, 5173 &count); 5174 if (error == 0) 5175 zc->zc_nvlist_dst_size = count; 5176 else 5177 zc->zc_nvlist_dst_size = spa_get_errlog_size(spa); 5178 5179 spa_close(spa, FTAG); 5180 5181 return (error); 5182 } 5183 5184 static int 5185 zfs_ioc_clear(zfs_cmd_t *zc) 5186 { 5187 spa_t *spa; 5188 vdev_t *vd; 5189 int error; 5190 5191 /* 5192 * On zpool clear we also fix up missing slogs 5193 */ 5194 mutex_enter(&spa_namespace_lock); 5195 spa = spa_lookup(zc->zc_name); 5196 if (spa == NULL) { 5197 mutex_exit(&spa_namespace_lock); 5198 return (SET_ERROR(EIO)); 5199 } 5200 if (spa_get_log_state(spa) == SPA_LOG_MISSING) { 5201 /* we need to let spa_open/spa_load clear the chains */ 5202 spa_set_log_state(spa, SPA_LOG_CLEAR); 5203 } 5204 spa->spa_last_open_failed = 0; 5205 mutex_exit(&spa_namespace_lock); 5206 5207 if (zc->zc_cookie & ZPOOL_NO_REWIND) { 5208 error = spa_open(zc->zc_name, &spa, FTAG); 5209 } else { 5210 nvlist_t *policy; 5211 nvlist_t *config = NULL; 5212 5213 if (zc->zc_nvlist_src == 0) 5214 return (SET_ERROR(EINVAL)); 5215 5216 if ((error = get_nvlist(zc->zc_nvlist_src, 5217 zc->zc_nvlist_src_size, zc->zc_iflags, &policy)) == 0) { 5218 error = spa_open_rewind(zc->zc_name, &spa, FTAG, 5219 policy, &config); 5220 if (config != NULL) { 5221 int err; 5222 5223 if ((err = put_nvlist(zc, config)) != 0) 5224 error = err; 5225 nvlist_free(config); 5226 } 5227 nvlist_free(policy); 5228 } 5229 } 5230 5231 if (error != 0) 5232 return (error); 5233 5234 /* 5235 * If multihost is enabled, resuming I/O is unsafe as another 5236 * host may have imported the pool. 5237 */ 5238 if (spa_multihost(spa) && spa_suspended(spa)) 5239 return (SET_ERROR(EINVAL)); 5240 5241 spa_vdev_state_enter(spa, SCL_NONE); 5242 5243 if (zc->zc_guid == 0) { 5244 vd = NULL; 5245 } else { 5246 vd = spa_lookup_by_guid(spa, zc->zc_guid, B_TRUE); 5247 if (vd == NULL) { 5248 (void) spa_vdev_state_exit(spa, NULL, ENODEV); 5249 spa_close(spa, FTAG); 5250 return (SET_ERROR(ENODEV)); 5251 } 5252 } 5253 5254 vdev_clear(spa, vd); 5255 5256 (void) spa_vdev_state_exit(spa, NULL, 0); 5257 5258 /* 5259 * Resume any suspended I/Os. 5260 */ 5261 if (zio_resume(spa) != 0) 5262 error = SET_ERROR(EIO); 5263 5264 spa_close(spa, FTAG); 5265 5266 return (error); 5267 } 5268 5269 static int 5270 zfs_ioc_pool_reopen(zfs_cmd_t *zc) 5271 { 5272 spa_t *spa; 5273 int error; 5274 5275 error = spa_open(zc->zc_name, &spa, FTAG); 5276 if (error != 0) 5277 return (error); 5278 5279 spa_vdev_state_enter(spa, SCL_NONE); 5280 5281 /* 5282 * If a resilver is already in progress then set the 5283 * spa_scrub_reopen flag to B_TRUE so that we don't restart 5284 * the scan as a side effect of the reopen. Otherwise, let 5285 * vdev_open() decided if a resilver is required. 5286 */ 5287 spa->spa_scrub_reopen = dsl_scan_resilvering(spa->spa_dsl_pool); 5288 vdev_reopen(spa->spa_root_vdev); 5289 spa->spa_scrub_reopen = B_FALSE; 5290 5291 (void) spa_vdev_state_exit(spa, NULL, 0); 5292 spa_close(spa, FTAG); 5293 return (0); 5294 } 5295 /* 5296 * inputs: 5297 * zc_name name of filesystem 5298 * 5299 * outputs: 5300 * zc_string name of conflicting snapshot, if there is one 5301 */ 5302 static int 5303 zfs_ioc_promote(zfs_cmd_t *zc) 5304 { 5305 dsl_pool_t *dp; 5306 dsl_dataset_t *ds, *ods; 5307 char origin[ZFS_MAX_DATASET_NAME_LEN]; 5308 char *cp; 5309 int error; 5310 5311 zc->zc_name[sizeof (zc->zc_name) - 1] = '\0'; 5312 if (dataset_namecheck(zc->zc_name, NULL, NULL) != 0 || 5313 strchr(zc->zc_name, '%')) 5314 return (SET_ERROR(EINVAL)); 5315 5316 error = dsl_pool_hold(zc->zc_name, FTAG, &dp); 5317 if (error != 0) 5318 return (error); 5319 5320 error = dsl_dataset_hold(dp, zc->zc_name, FTAG, &ds); 5321 if (error != 0) { 5322 dsl_pool_rele(dp, FTAG); 5323 return (error); 5324 } 5325 5326 if (!dsl_dir_is_clone(ds->ds_dir)) { 5327 dsl_dataset_rele(ds, FTAG); 5328 dsl_pool_rele(dp, FTAG); 5329 return (SET_ERROR(EINVAL)); 5330 } 5331 5332 error = dsl_dataset_hold_obj(dp, 5333 dsl_dir_phys(ds->ds_dir)->dd_origin_obj, FTAG, &ods); 5334 if (error != 0) { 5335 dsl_dataset_rele(ds, FTAG); 5336 dsl_pool_rele(dp, FTAG); 5337 return (error); 5338 } 5339 5340 dsl_dataset_name(ods, origin); 5341 dsl_dataset_rele(ods, FTAG); 5342 dsl_dataset_rele(ds, FTAG); 5343 dsl_pool_rele(dp, FTAG); 5344 5345 /* 5346 * We don't need to unmount *all* the origin fs's snapshots, but 5347 * it's easier. 5348 */ 5349 cp = strchr(origin, '@'); 5350 if (cp) 5351 *cp = '\0'; 5352 (void) dmu_objset_find(origin, 5353 zfs_unmount_snap_cb, NULL, DS_FIND_SNAPSHOTS); 5354 return (dsl_dataset_promote(zc->zc_name, zc->zc_string)); 5355 } 5356 5357 /* 5358 * Retrieve a single {user|group|project}{used|quota}@... property. 5359 * 5360 * inputs: 5361 * zc_name name of filesystem 5362 * zc_objset_type zfs_userquota_prop_t 5363 * zc_value domain name (eg. "S-1-234-567-89") 5364 * zc_guid RID/UID/GID 5365 * 5366 * outputs: 5367 * zc_cookie property value 5368 */ 5369 static int 5370 zfs_ioc_userspace_one(zfs_cmd_t *zc) 5371 { 5372 zfsvfs_t *zfsvfs; 5373 int error; 5374 5375 if (zc->zc_objset_type >= ZFS_NUM_USERQUOTA_PROPS) 5376 return (SET_ERROR(EINVAL)); 5377 5378 error = zfsvfs_hold(zc->zc_name, FTAG, &zfsvfs, B_FALSE); 5379 if (error != 0) 5380 return (error); 5381 5382 error = zfs_userspace_one(zfsvfs, 5383 zc->zc_objset_type, zc->zc_value, zc->zc_guid, &zc->zc_cookie); 5384 zfsvfs_rele(zfsvfs, FTAG); 5385 5386 return (error); 5387 } 5388 5389 /* 5390 * inputs: 5391 * zc_name name of filesystem 5392 * zc_cookie zap cursor 5393 * zc_objset_type zfs_userquota_prop_t 5394 * zc_nvlist_dst[_size] buffer to fill (not really an nvlist) 5395 * 5396 * outputs: 5397 * zc_nvlist_dst[_size] data buffer (array of zfs_useracct_t) 5398 * zc_cookie zap cursor 5399 */ 5400 static int 5401 zfs_ioc_userspace_many(zfs_cmd_t *zc) 5402 { 5403 zfsvfs_t *zfsvfs; 5404 int bufsize = zc->zc_nvlist_dst_size; 5405 5406 if (bufsize <= 0) 5407 return (SET_ERROR(ENOMEM)); 5408 5409 int error = zfsvfs_hold(zc->zc_name, FTAG, &zfsvfs, B_FALSE); 5410 if (error != 0) 5411 return (error); 5412 5413 void *buf = kmem_alloc(bufsize, KM_SLEEP); 5414 5415 error = zfs_userspace_many(zfsvfs, zc->zc_objset_type, &zc->zc_cookie, 5416 buf, &zc->zc_nvlist_dst_size); 5417 5418 if (error == 0) { 5419 error = xcopyout(buf, 5420 (void *)(uintptr_t)zc->zc_nvlist_dst, 5421 zc->zc_nvlist_dst_size); 5422 } 5423 kmem_free(buf, bufsize); 5424 zfsvfs_rele(zfsvfs, FTAG); 5425 5426 return (error); 5427 } 5428 5429 /* 5430 * inputs: 5431 * zc_name name of filesystem 5432 * 5433 * outputs: 5434 * none 5435 */ 5436 static int 5437 zfs_ioc_userspace_upgrade(zfs_cmd_t *zc) 5438 { 5439 objset_t *os; 5440 int error = 0; 5441 zfsvfs_t *zfsvfs; 5442 5443 if (getzfsvfs(zc->zc_name, &zfsvfs) == 0) { 5444 if (!dmu_objset_userused_enabled(zfsvfs->z_os)) { 5445 /* 5446 * If userused is not enabled, it may be because the 5447 * objset needs to be closed & reopened (to grow the 5448 * objset_phys_t). Suspend/resume the fs will do that. 5449 */ 5450 dsl_dataset_t *ds, *newds; 5451 5452 ds = dmu_objset_ds(zfsvfs->z_os); 5453 error = zfs_suspend_fs(zfsvfs); 5454 if (error == 0) { 5455 dmu_objset_refresh_ownership(ds, &newds, 5456 B_TRUE, zfsvfs); 5457 error = zfs_resume_fs(zfsvfs, newds); 5458 } 5459 } 5460 if (error == 0) 5461 error = dmu_objset_userspace_upgrade(zfsvfs->z_os); 5462 VFS_RELE(zfsvfs->z_vfs); 5463 } else { 5464 /* XXX kind of reading contents without owning */ 5465 error = dmu_objset_hold_flags(zc->zc_name, B_TRUE, FTAG, &os); 5466 if (error != 0) 5467 return (error); 5468 5469 error = dmu_objset_userspace_upgrade(os); 5470 dmu_objset_rele_flags(os, B_TRUE, FTAG); 5471 } 5472 5473 return (error); 5474 } 5475 5476 /* 5477 * inputs: 5478 * zc_name name of filesystem 5479 * 5480 * outputs: 5481 * none 5482 */ 5483 static int 5484 zfs_ioc_id_quota_upgrade(zfs_cmd_t *zc) 5485 { 5486 objset_t *os; 5487 int error; 5488 5489 error = dmu_objset_hold(zc->zc_name, FTAG, &os); 5490 if (error != 0) 5491 return (error); 5492 5493 dsl_dataset_long_hold(dmu_objset_ds(os), FTAG); 5494 dsl_pool_rele(dmu_objset_pool(os), FTAG); 5495 5496 if (dmu_objset_userobjspace_upgradable(os) || 5497 dmu_objset_projectquota_upgradable(os)) { 5498 mutex_enter(&os->os_upgrade_lock); 5499 if (os->os_upgrade_id == 0) { 5500 /* clear potential error code and retry */ 5501 os->os_upgrade_status = 0; 5502 mutex_exit(&os->os_upgrade_lock); 5503 5504 dmu_objset_id_quota_upgrade(os); 5505 } else { 5506 mutex_exit(&os->os_upgrade_lock); 5507 } 5508 5509 taskq_wait_id(os->os_spa->spa_upgrade_taskq, os->os_upgrade_id); 5510 error = os->os_upgrade_status; 5511 } 5512 5513 dsl_dataset_long_rele(dmu_objset_ds(os), FTAG); 5514 dsl_dataset_rele(dmu_objset_ds(os), FTAG); 5515 5516 return (error); 5517 } 5518 5519 /* 5520 * We don't want to have a hard dependency 5521 * against some special symbols in sharefs 5522 * nfs, and smbsrv. Determine them if needed when 5523 * the first file system is shared. 5524 * Neither sharefs, nfs or smbsrv are unloadable modules. 5525 */ 5526 int (*znfsexport_fs)(void *arg); 5527 int (*zshare_fs)(enum sharefs_sys_op, share_t *, uint32_t); 5528 int (*zsmbexport_fs)(void *arg, boolean_t add_share); 5529 5530 int zfs_nfsshare_inited; 5531 int zfs_smbshare_inited; 5532 5533 ddi_modhandle_t nfs_mod; 5534 ddi_modhandle_t sharefs_mod; 5535 ddi_modhandle_t smbsrv_mod; 5536 kmutex_t zfs_share_lock; 5537 5538 static int 5539 zfs_init_sharefs() 5540 { 5541 int error; 5542 5543 ASSERT(MUTEX_HELD(&zfs_share_lock)); 5544 /* Both NFS and SMB shares also require sharetab support. */ 5545 if (sharefs_mod == NULL && ((sharefs_mod = 5546 ddi_modopen("fs/sharefs", 5547 KRTLD_MODE_FIRST, &error)) == NULL)) { 5548 return (SET_ERROR(ENOSYS)); 5549 } 5550 if (zshare_fs == NULL && ((zshare_fs = 5551 (int (*)(enum sharefs_sys_op, share_t *, uint32_t)) 5552 ddi_modsym(sharefs_mod, "sharefs_impl", &error)) == NULL)) { 5553 return (SET_ERROR(ENOSYS)); 5554 } 5555 return (0); 5556 } 5557 5558 static int 5559 zfs_ioc_share(zfs_cmd_t *zc) 5560 { 5561 int error; 5562 int opcode; 5563 5564 switch (zc->zc_share.z_sharetype) { 5565 case ZFS_SHARE_NFS: 5566 case ZFS_UNSHARE_NFS: 5567 if (zfs_nfsshare_inited == 0) { 5568 mutex_enter(&zfs_share_lock); 5569 if (nfs_mod == NULL && ((nfs_mod = ddi_modopen("fs/nfs", 5570 KRTLD_MODE_FIRST, &error)) == NULL)) { 5571 mutex_exit(&zfs_share_lock); 5572 return (SET_ERROR(ENOSYS)); 5573 } 5574 if (znfsexport_fs == NULL && 5575 ((znfsexport_fs = (int (*)(void *)) 5576 ddi_modsym(nfs_mod, 5577 "nfs_export", &error)) == NULL)) { 5578 mutex_exit(&zfs_share_lock); 5579 return (SET_ERROR(ENOSYS)); 5580 } 5581 error = zfs_init_sharefs(); 5582 if (error != 0) { 5583 mutex_exit(&zfs_share_lock); 5584 return (SET_ERROR(ENOSYS)); 5585 } 5586 zfs_nfsshare_inited = 1; 5587 mutex_exit(&zfs_share_lock); 5588 } 5589 break; 5590 case ZFS_SHARE_SMB: 5591 case ZFS_UNSHARE_SMB: 5592 if (zfs_smbshare_inited == 0) { 5593 mutex_enter(&zfs_share_lock); 5594 if (smbsrv_mod == NULL && ((smbsrv_mod = 5595 ddi_modopen("drv/smbsrv", 5596 KRTLD_MODE_FIRST, &error)) == NULL)) { 5597 mutex_exit(&zfs_share_lock); 5598 return (SET_ERROR(ENOSYS)); 5599 } 5600 if (zsmbexport_fs == NULL && ((zsmbexport_fs = 5601 (int (*)(void *, boolean_t))ddi_modsym(smbsrv_mod, 5602 "smb_server_share", &error)) == NULL)) { 5603 mutex_exit(&zfs_share_lock); 5604 return (SET_ERROR(ENOSYS)); 5605 } 5606 error = zfs_init_sharefs(); 5607 if (error != 0) { 5608 mutex_exit(&zfs_share_lock); 5609 return (SET_ERROR(ENOSYS)); 5610 } 5611 zfs_smbshare_inited = 1; 5612 mutex_exit(&zfs_share_lock); 5613 } 5614 break; 5615 default: 5616 return (SET_ERROR(EINVAL)); 5617 } 5618 5619 switch (zc->zc_share.z_sharetype) { 5620 case ZFS_SHARE_NFS: 5621 case ZFS_UNSHARE_NFS: 5622 if (error = 5623 znfsexport_fs((void *) 5624 (uintptr_t)zc->zc_share.z_exportdata)) 5625 return (error); 5626 break; 5627 case ZFS_SHARE_SMB: 5628 case ZFS_UNSHARE_SMB: 5629 if (error = zsmbexport_fs((void *) 5630 (uintptr_t)zc->zc_share.z_exportdata, 5631 zc->zc_share.z_sharetype == ZFS_SHARE_SMB ? 5632 B_TRUE: B_FALSE)) { 5633 return (error); 5634 } 5635 break; 5636 } 5637 5638 opcode = (zc->zc_share.z_sharetype == ZFS_SHARE_NFS || 5639 zc->zc_share.z_sharetype == ZFS_SHARE_SMB) ? 5640 SHAREFS_ADD : SHAREFS_REMOVE; 5641 5642 /* 5643 * Add or remove share from sharetab 5644 */ 5645 error = zshare_fs(opcode, 5646 (void *)(uintptr_t)zc->zc_share.z_sharedata, 5647 zc->zc_share.z_sharemax); 5648 5649 return (error); 5650 5651 } 5652 5653 ace_t full_access[] = { 5654 {(uid_t)-1, ACE_ALL_PERMS, ACE_EVERYONE, 0} 5655 }; 5656 5657 /* 5658 * inputs: 5659 * zc_name name of containing filesystem 5660 * zc_obj object # beyond which we want next in-use object # 5661 * 5662 * outputs: 5663 * zc_obj next in-use object # 5664 */ 5665 static int 5666 zfs_ioc_next_obj(zfs_cmd_t *zc) 5667 { 5668 objset_t *os = NULL; 5669 int error; 5670 5671 error = dmu_objset_hold(zc->zc_name, FTAG, &os); 5672 if (error != 0) 5673 return (error); 5674 5675 error = dmu_object_next(os, &zc->zc_obj, B_FALSE, 5676 dsl_dataset_phys(os->os_dsl_dataset)->ds_prev_snap_txg); 5677 5678 dmu_objset_rele(os, FTAG); 5679 return (error); 5680 } 5681 5682 /* 5683 * inputs: 5684 * zc_name name of filesystem 5685 * zc_value prefix name for snapshot 5686 * zc_cleanup_fd cleanup-on-exit file descriptor for calling process 5687 * 5688 * outputs: 5689 * zc_value short name of new snapshot 5690 */ 5691 static int 5692 zfs_ioc_tmp_snapshot(zfs_cmd_t *zc) 5693 { 5694 char *snap_name; 5695 char *hold_name; 5696 int error; 5697 minor_t minor; 5698 5699 error = zfs_onexit_fd_hold(zc->zc_cleanup_fd, &minor); 5700 if (error != 0) 5701 return (error); 5702 5703 snap_name = kmem_asprintf("%s-%016llx", zc->zc_value, 5704 (u_longlong_t)ddi_get_lbolt64()); 5705 hold_name = kmem_asprintf("%%%s", zc->zc_value); 5706 5707 error = dsl_dataset_snapshot_tmp(zc->zc_name, snap_name, minor, 5708 hold_name); 5709 if (error == 0) 5710 (void) strcpy(zc->zc_value, snap_name); 5711 strfree(snap_name); 5712 strfree(hold_name); 5713 zfs_onexit_fd_rele(zc->zc_cleanup_fd); 5714 return (error); 5715 } 5716 5717 /* 5718 * inputs: 5719 * zc_name name of "to" snapshot 5720 * zc_value name of "from" snapshot 5721 * zc_cookie file descriptor to write diff data on 5722 * 5723 * outputs: 5724 * dmu_diff_record_t's to the file descriptor 5725 */ 5726 static int 5727 zfs_ioc_diff(zfs_cmd_t *zc) 5728 { 5729 file_t *fp; 5730 offset_t off; 5731 int error; 5732 5733 fp = getf(zc->zc_cookie); 5734 if (fp == NULL) 5735 return (SET_ERROR(EBADF)); 5736 5737 off = fp->f_offset; 5738 5739 error = dmu_diff(zc->zc_name, zc->zc_value, fp->f_vnode, &off); 5740 5741 if (VOP_SEEK(fp->f_vnode, fp->f_offset, &off, NULL) == 0) 5742 fp->f_offset = off; 5743 releasef(zc->zc_cookie); 5744 5745 return (error); 5746 } 5747 5748 /* 5749 * Remove all ACL files in shares dir 5750 */ 5751 static int 5752 zfs_smb_acl_purge(znode_t *dzp) 5753 { 5754 zap_cursor_t zc; 5755 zap_attribute_t zap; 5756 zfsvfs_t *zfsvfs = dzp->z_zfsvfs; 5757 int error; 5758 5759 for (zap_cursor_init(&zc, zfsvfs->z_os, dzp->z_id); 5760 (error = zap_cursor_retrieve(&zc, &zap)) == 0; 5761 zap_cursor_advance(&zc)) { 5762 if ((error = VOP_REMOVE(ZTOV(dzp), zap.za_name, kcred, 5763 NULL, 0)) != 0) 5764 break; 5765 } 5766 zap_cursor_fini(&zc); 5767 return (error); 5768 } 5769 5770 static int 5771 zfs_ioc_smb_acl(zfs_cmd_t *zc) 5772 { 5773 vnode_t *vp; 5774 znode_t *dzp; 5775 vnode_t *resourcevp = NULL; 5776 znode_t *sharedir; 5777 zfsvfs_t *zfsvfs; 5778 nvlist_t *nvlist; 5779 char *src, *target; 5780 vattr_t vattr; 5781 vsecattr_t vsec; 5782 int error = 0; 5783 5784 if ((error = lookupname(zc->zc_value, UIO_SYSSPACE, 5785 NO_FOLLOW, NULL, &vp)) != 0) 5786 return (error); 5787 5788 /* Now make sure mntpnt and dataset are ZFS */ 5789 5790 if (vp->v_vfsp->vfs_fstype != zfsfstype || 5791 (strcmp((char *)refstr_value(vp->v_vfsp->vfs_resource), 5792 zc->zc_name) != 0)) { 5793 VN_RELE(vp); 5794 return (SET_ERROR(EINVAL)); 5795 } 5796 5797 dzp = VTOZ(vp); 5798 zfsvfs = dzp->z_zfsvfs; 5799 ZFS_ENTER(zfsvfs); 5800 5801 /* 5802 * Create share dir if its missing. 5803 */ 5804 mutex_enter(&zfsvfs->z_lock); 5805 if (zfsvfs->z_shares_dir == 0) { 5806 dmu_tx_t *tx; 5807 5808 tx = dmu_tx_create(zfsvfs->z_os); 5809 dmu_tx_hold_zap(tx, MASTER_NODE_OBJ, TRUE, 5810 ZFS_SHARES_DIR); 5811 dmu_tx_hold_zap(tx, DMU_NEW_OBJECT, FALSE, NULL); 5812 error = dmu_tx_assign(tx, TXG_WAIT); 5813 if (error != 0) { 5814 dmu_tx_abort(tx); 5815 } else { 5816 error = zfs_create_share_dir(zfsvfs, tx); 5817 dmu_tx_commit(tx); 5818 } 5819 if (error != 0) { 5820 mutex_exit(&zfsvfs->z_lock); 5821 VN_RELE(vp); 5822 ZFS_EXIT(zfsvfs); 5823 return (error); 5824 } 5825 } 5826 mutex_exit(&zfsvfs->z_lock); 5827 5828 ASSERT(zfsvfs->z_shares_dir); 5829 if ((error = zfs_zget(zfsvfs, zfsvfs->z_shares_dir, &sharedir)) != 0) { 5830 VN_RELE(vp); 5831 ZFS_EXIT(zfsvfs); 5832 return (error); 5833 } 5834 5835 switch (zc->zc_cookie) { 5836 case ZFS_SMB_ACL_ADD: 5837 vattr.va_mask = AT_MODE|AT_UID|AT_GID|AT_TYPE; 5838 vattr.va_type = VREG; 5839 vattr.va_mode = S_IFREG|0777; 5840 vattr.va_uid = 0; 5841 vattr.va_gid = 0; 5842 5843 vsec.vsa_mask = VSA_ACE; 5844 vsec.vsa_aclentp = &full_access; 5845 vsec.vsa_aclentsz = sizeof (full_access); 5846 vsec.vsa_aclcnt = 1; 5847 5848 error = VOP_CREATE(ZTOV(sharedir), zc->zc_string, 5849 &vattr, EXCL, 0, &resourcevp, kcred, 0, NULL, &vsec); 5850 if (resourcevp) 5851 VN_RELE(resourcevp); 5852 break; 5853 5854 case ZFS_SMB_ACL_REMOVE: 5855 error = VOP_REMOVE(ZTOV(sharedir), zc->zc_string, kcred, 5856 NULL, 0); 5857 break; 5858 5859 case ZFS_SMB_ACL_RENAME: 5860 if ((error = get_nvlist(zc->zc_nvlist_src, 5861 zc->zc_nvlist_src_size, zc->zc_iflags, &nvlist)) != 0) { 5862 VN_RELE(vp); 5863 VN_RELE(ZTOV(sharedir)); 5864 ZFS_EXIT(zfsvfs); 5865 return (error); 5866 } 5867 if (nvlist_lookup_string(nvlist, ZFS_SMB_ACL_SRC, &src) || 5868 nvlist_lookup_string(nvlist, ZFS_SMB_ACL_TARGET, 5869 &target)) { 5870 VN_RELE(vp); 5871 VN_RELE(ZTOV(sharedir)); 5872 ZFS_EXIT(zfsvfs); 5873 nvlist_free(nvlist); 5874 return (error); 5875 } 5876 error = VOP_RENAME(ZTOV(sharedir), src, ZTOV(sharedir), target, 5877 kcred, NULL, 0); 5878 nvlist_free(nvlist); 5879 break; 5880 5881 case ZFS_SMB_ACL_PURGE: 5882 error = zfs_smb_acl_purge(sharedir); 5883 break; 5884 5885 default: 5886 error = SET_ERROR(EINVAL); 5887 break; 5888 } 5889 5890 VN_RELE(vp); 5891 VN_RELE(ZTOV(sharedir)); 5892 5893 ZFS_EXIT(zfsvfs); 5894 5895 return (error); 5896 } 5897 5898 /* 5899 * innvl: { 5900 * "holds" -> { snapname -> holdname (string), ... } 5901 * (optional) "cleanup_fd" -> fd (int32) 5902 * } 5903 * 5904 * outnvl: { 5905 * snapname -> error value (int32) 5906 * ... 5907 * } 5908 */ 5909 /* ARGSUSED */ 5910 static int 5911 zfs_ioc_hold(const char *pool, nvlist_t *args, nvlist_t *errlist) 5912 { 5913 nvpair_t *pair; 5914 nvlist_t *holds; 5915 int cleanup_fd = -1; 5916 int error; 5917 minor_t minor = 0; 5918 5919 error = nvlist_lookup_nvlist(args, "holds", &holds); 5920 if (error != 0) 5921 return (SET_ERROR(EINVAL)); 5922 5923 /* make sure the user didn't pass us any invalid (empty) tags */ 5924 for (pair = nvlist_next_nvpair(holds, NULL); pair != NULL; 5925 pair = nvlist_next_nvpair(holds, pair)) { 5926 char *htag; 5927 5928 error = nvpair_value_string(pair, &htag); 5929 if (error != 0) 5930 return (SET_ERROR(error)); 5931 5932 if (strlen(htag) == 0) 5933 return (SET_ERROR(EINVAL)); 5934 } 5935 5936 if (nvlist_lookup_int32(args, "cleanup_fd", &cleanup_fd) == 0) { 5937 error = zfs_onexit_fd_hold(cleanup_fd, &minor); 5938 if (error != 0) 5939 return (error); 5940 } 5941 5942 error = dsl_dataset_user_hold(holds, minor, errlist); 5943 if (minor != 0) 5944 zfs_onexit_fd_rele(cleanup_fd); 5945 return (error); 5946 } 5947 5948 /* 5949 * innvl is not used. 5950 * 5951 * outnvl: { 5952 * holdname -> time added (uint64 seconds since epoch) 5953 * ... 5954 * } 5955 */ 5956 /* ARGSUSED */ 5957 static int 5958 zfs_ioc_get_holds(const char *snapname, nvlist_t *args, nvlist_t *outnvl) 5959 { 5960 ASSERT3P(args, ==, NULL); 5961 return (dsl_dataset_get_holds(snapname, outnvl)); 5962 } 5963 5964 /* 5965 * innvl: { 5966 * snapname -> { holdname, ... } 5967 * ... 5968 * } 5969 * 5970 * outnvl: { 5971 * snapname -> error value (int32) 5972 * ... 5973 * } 5974 */ 5975 /* ARGSUSED */ 5976 static int 5977 zfs_ioc_release(const char *pool, nvlist_t *holds, nvlist_t *errlist) 5978 { 5979 return (dsl_dataset_user_release(holds, errlist)); 5980 } 5981 5982 /* 5983 * inputs: 5984 * zc_name name of new filesystem or snapshot 5985 * zc_value full name of old snapshot 5986 * 5987 * outputs: 5988 * zc_cookie space in bytes 5989 * zc_objset_type compressed space in bytes 5990 * zc_perm_action uncompressed space in bytes 5991 */ 5992 static int 5993 zfs_ioc_space_written(zfs_cmd_t *zc) 5994 { 5995 int error; 5996 dsl_pool_t *dp; 5997 dsl_dataset_t *new, *old; 5998 5999 error = dsl_pool_hold(zc->zc_name, FTAG, &dp); 6000 if (error != 0) 6001 return (error); 6002 error = dsl_dataset_hold(dp, zc->zc_name, FTAG, &new); 6003 if (error != 0) { 6004 dsl_pool_rele(dp, FTAG); 6005 return (error); 6006 } 6007 error = dsl_dataset_hold(dp, zc->zc_value, FTAG, &old); 6008 if (error != 0) { 6009 dsl_dataset_rele(new, FTAG); 6010 dsl_pool_rele(dp, FTAG); 6011 return (error); 6012 } 6013 6014 error = dsl_dataset_space_written(old, new, &zc->zc_cookie, 6015 &zc->zc_objset_type, &zc->zc_perm_action); 6016 dsl_dataset_rele(old, FTAG); 6017 dsl_dataset_rele(new, FTAG); 6018 dsl_pool_rele(dp, FTAG); 6019 return (error); 6020 } 6021 6022 /* 6023 * innvl: { 6024 * "firstsnap" -> snapshot name 6025 * } 6026 * 6027 * outnvl: { 6028 * "used" -> space in bytes 6029 * "compressed" -> compressed space in bytes 6030 * "uncompressed" -> uncompressed space in bytes 6031 * } 6032 */ 6033 static int 6034 zfs_ioc_space_snaps(const char *lastsnap, nvlist_t *innvl, nvlist_t *outnvl) 6035 { 6036 int error; 6037 dsl_pool_t *dp; 6038 dsl_dataset_t *new, *old; 6039 char *firstsnap; 6040 uint64_t used, comp, uncomp; 6041 6042 if (nvlist_lookup_string(innvl, "firstsnap", &firstsnap) != 0) 6043 return (SET_ERROR(EINVAL)); 6044 6045 error = dsl_pool_hold(lastsnap, FTAG, &dp); 6046 if (error != 0) 6047 return (error); 6048 6049 error = dsl_dataset_hold(dp, lastsnap, FTAG, &new); 6050 if (error == 0 && !new->ds_is_snapshot) { 6051 dsl_dataset_rele(new, FTAG); 6052 error = SET_ERROR(EINVAL); 6053 } 6054 if (error != 0) { 6055 dsl_pool_rele(dp, FTAG); 6056 return (error); 6057 } 6058 error = dsl_dataset_hold(dp, firstsnap, FTAG, &old); 6059 if (error == 0 && !old->ds_is_snapshot) { 6060 dsl_dataset_rele(old, FTAG); 6061 error = SET_ERROR(EINVAL); 6062 } 6063 if (error != 0) { 6064 dsl_dataset_rele(new, FTAG); 6065 dsl_pool_rele(dp, FTAG); 6066 return (error); 6067 } 6068 6069 error = dsl_dataset_space_wouldfree(old, new, &used, &comp, &uncomp); 6070 dsl_dataset_rele(old, FTAG); 6071 dsl_dataset_rele(new, FTAG); 6072 dsl_pool_rele(dp, FTAG); 6073 fnvlist_add_uint64(outnvl, "used", used); 6074 fnvlist_add_uint64(outnvl, "compressed", comp); 6075 fnvlist_add_uint64(outnvl, "uncompressed", uncomp); 6076 return (error); 6077 } 6078 6079 /* 6080 * innvl: { 6081 * "fd" -> file descriptor to write stream to (int32) 6082 * (optional) "fromsnap" -> full snap name to send an incremental from 6083 * (optional) "largeblockok" -> (value ignored) 6084 * indicates that blocks > 128KB are permitted 6085 * (optional) "embedok" -> (value ignored) 6086 * presence indicates DRR_WRITE_EMBEDDED records are permitted 6087 * (optional) "compressok" -> (value ignored) 6088 * presence indicates compressed DRR_WRITE records are permitted 6089 * (optional) "rawok" -> (value ignored) 6090 * presence indicates raw encrypted records should be used. 6091 * (optional) "resume_object" and "resume_offset" -> (uint64) 6092 * if present, resume send stream from specified object and offset. 6093 * } 6094 * 6095 * outnvl is unused 6096 */ 6097 /* ARGSUSED */ 6098 static int 6099 zfs_ioc_send_new(const char *snapname, nvlist_t *innvl, nvlist_t *outnvl) 6100 { 6101 int error; 6102 offset_t off; 6103 char *fromname = NULL; 6104 int fd; 6105 boolean_t largeblockok; 6106 boolean_t embedok; 6107 boolean_t compressok; 6108 boolean_t rawok; 6109 uint64_t resumeobj = 0; 6110 uint64_t resumeoff = 0; 6111 6112 error = nvlist_lookup_int32(innvl, "fd", &fd); 6113 if (error != 0) 6114 return (SET_ERROR(EINVAL)); 6115 6116 (void) nvlist_lookup_string(innvl, "fromsnap", &fromname); 6117 6118 largeblockok = nvlist_exists(innvl, "largeblockok"); 6119 embedok = nvlist_exists(innvl, "embedok"); 6120 compressok = nvlist_exists(innvl, "compressok"); 6121 rawok = nvlist_exists(innvl, "rawok"); 6122 6123 (void) nvlist_lookup_uint64(innvl, "resume_object", &resumeobj); 6124 (void) nvlist_lookup_uint64(innvl, "resume_offset", &resumeoff); 6125 6126 file_t *fp = getf(fd); 6127 if (fp == NULL) 6128 return (SET_ERROR(EBADF)); 6129 6130 off = fp->f_offset; 6131 error = dmu_send(snapname, fromname, embedok, largeblockok, compressok, 6132 rawok, fd, resumeobj, resumeoff, fp->f_vnode, &off); 6133 6134 if (VOP_SEEK(fp->f_vnode, fp->f_offset, &off, NULL) == 0) 6135 fp->f_offset = off; 6136 releasef(fd); 6137 return (error); 6138 } 6139 6140 /* 6141 * Determine approximately how large a zfs send stream will be -- the number 6142 * of bytes that will be written to the fd supplied to zfs_ioc_send_new(). 6143 * 6144 * innvl: { 6145 * (optional) "from" -> full snap or bookmark name to send an incremental 6146 * from 6147 * (optional) "largeblockok" -> (value ignored) 6148 * indicates that blocks > 128KB are permitted 6149 * (optional) "embedok" -> (value ignored) 6150 * presence indicates DRR_WRITE_EMBEDDED records are permitted 6151 * (optional) "compressok" -> (value ignored) 6152 * presence indicates compressed DRR_WRITE records are permitted 6153 * } 6154 * 6155 * outnvl: { 6156 * "space" -> bytes of space (uint64) 6157 * } 6158 */ 6159 static int 6160 zfs_ioc_send_space(const char *snapname, nvlist_t *innvl, nvlist_t *outnvl) 6161 { 6162 dsl_pool_t *dp; 6163 dsl_dataset_t *tosnap; 6164 int error; 6165 char *fromname; 6166 boolean_t compressok; 6167 boolean_t rawok; 6168 uint64_t space; 6169 6170 error = dsl_pool_hold(snapname, FTAG, &dp); 6171 if (error != 0) 6172 return (error); 6173 6174 error = dsl_dataset_hold(dp, snapname, FTAG, &tosnap); 6175 if (error != 0) { 6176 dsl_pool_rele(dp, FTAG); 6177 return (error); 6178 } 6179 6180 compressok = nvlist_exists(innvl, "compressok"); 6181 rawok = nvlist_exists(innvl, "rawok"); 6182 6183 error = nvlist_lookup_string(innvl, "from", &fromname); 6184 if (error == 0) { 6185 if (strchr(fromname, '@') != NULL) { 6186 /* 6187 * If from is a snapshot, hold it and use the more 6188 * efficient dmu_send_estimate to estimate send space 6189 * size using deadlists. 6190 */ 6191 dsl_dataset_t *fromsnap; 6192 error = dsl_dataset_hold(dp, fromname, FTAG, &fromsnap); 6193 if (error != 0) 6194 goto out; 6195 error = dmu_send_estimate(tosnap, fromsnap, 6196 compressok || rawok, &space); 6197 dsl_dataset_rele(fromsnap, FTAG); 6198 } else if (strchr(fromname, '#') != NULL) { 6199 /* 6200 * If from is a bookmark, fetch the creation TXG of the 6201 * snapshot it was created from and use that to find 6202 * blocks that were born after it. 6203 */ 6204 zfs_bookmark_phys_t frombm; 6205 6206 error = dsl_bookmark_lookup(dp, fromname, tosnap, 6207 &frombm); 6208 if (error != 0) 6209 goto out; 6210 error = dmu_send_estimate_from_txg(tosnap, 6211 frombm.zbm_creation_txg, compressok || rawok, 6212 &space); 6213 } else { 6214 /* 6215 * from is not properly formatted as a snapshot or 6216 * bookmark 6217 */ 6218 error = SET_ERROR(EINVAL); 6219 goto out; 6220 } 6221 } else { 6222 /* 6223 * If estimating the size of a full send, use dmu_send_estimate. 6224 */ 6225 error = dmu_send_estimate(tosnap, NULL, compressok || rawok, 6226 &space); 6227 } 6228 6229 fnvlist_add_uint64(outnvl, "space", space); 6230 6231 out: 6232 dsl_dataset_rele(tosnap, FTAG); 6233 dsl_pool_rele(dp, FTAG); 6234 return (error); 6235 } 6236 6237 /* 6238 * Sync the currently open TXG to disk for the specified pool. 6239 * This is somewhat similar to 'zfs_sync()'. 6240 * For cases that do not result in error this ioctl will wait for 6241 * the currently open TXG to commit before returning back to the caller. 6242 * 6243 * innvl: { 6244 * "force" -> when true, force uberblock update even if there is no dirty data. 6245 * In addition this will cause the vdev configuration to be written 6246 * out including updating the zpool cache file. (boolean_t) 6247 * } 6248 * 6249 * onvl is unused 6250 */ 6251 /* ARGSUSED */ 6252 static int 6253 zfs_ioc_pool_sync(const char *pool, nvlist_t *innvl, nvlist_t *onvl) 6254 { 6255 int err; 6256 boolean_t force; 6257 spa_t *spa; 6258 6259 if ((err = spa_open(pool, &spa, FTAG)) != 0) 6260 return (err); 6261 6262 force = fnvlist_lookup_boolean_value(innvl, "force"); 6263 if (force) { 6264 spa_config_enter(spa, SCL_CONFIG, FTAG, RW_WRITER); 6265 vdev_config_dirty(spa->spa_root_vdev); 6266 spa_config_exit(spa, SCL_CONFIG, FTAG); 6267 } 6268 txg_wait_synced(spa_get_dsl(spa), 0); 6269 6270 spa_close(spa, FTAG); 6271 6272 return (err); 6273 } 6274 6275 /* 6276 * Load a user's wrapping key into the kernel. 6277 * innvl: { 6278 * "hidden_args" -> { "wkeydata" -> value } 6279 * raw uint8_t array of encryption wrapping key data (32 bytes) 6280 * (optional) "noop" -> (value ignored) 6281 * presence indicated key should only be verified, not loaded 6282 * } 6283 */ 6284 /* ARGSUSED */ 6285 static int 6286 zfs_ioc_load_key(const char *dsname, nvlist_t *innvl, nvlist_t *outnvl) 6287 { 6288 int ret = 0; 6289 dsl_crypto_params_t *dcp = NULL; 6290 nvlist_t *hidden_args; 6291 boolean_t noop = nvlist_exists(innvl, "noop"); 6292 6293 if (strchr(dsname, '@') != NULL || strchr(dsname, '%') != NULL) { 6294 ret = SET_ERROR(EINVAL); 6295 goto error; 6296 } 6297 6298 ret = nvlist_lookup_nvlist(innvl, ZPOOL_HIDDEN_ARGS, &hidden_args); 6299 if (ret != 0) { 6300 ret = SET_ERROR(EINVAL); 6301 goto error; 6302 } 6303 6304 ret = dsl_crypto_params_create_nvlist(DCP_CMD_NONE, NULL, 6305 hidden_args, &dcp); 6306 if (ret != 0) 6307 goto error; 6308 6309 ret = spa_keystore_load_wkey(dsname, dcp, noop); 6310 if (ret != 0) 6311 goto error; 6312 6313 dsl_crypto_params_free(dcp, noop); 6314 6315 return (0); 6316 6317 error: 6318 dsl_crypto_params_free(dcp, B_TRUE); 6319 return (ret); 6320 } 6321 6322 /* 6323 * Unload a user's wrapping key from the kernel. 6324 * Both innvl and outnvl are unused. 6325 */ 6326 /* ARGSUSED */ 6327 static int 6328 zfs_ioc_unload_key(const char *dsname, nvlist_t *innvl, nvlist_t *outnvl) 6329 { 6330 int ret = 0; 6331 6332 if (strchr(dsname, '@') != NULL || strchr(dsname, '%') != NULL) { 6333 ret = (SET_ERROR(EINVAL)); 6334 goto out; 6335 } 6336 6337 ret = spa_keystore_unload_wkey(dsname); 6338 if (ret != 0) 6339 goto out; 6340 6341 out: 6342 return (ret); 6343 } 6344 6345 /* 6346 * Changes a user's wrapping key used to decrypt a dataset. The keyformat, 6347 * keylocation, pbkdf2salt, and pbkdf2iters properties can also be specified 6348 * here to change how the key is derived in userspace. 6349 * 6350 * innvl: { 6351 * "hidden_args" (optional) -> { "wkeydata" -> value } 6352 * raw uint8_t array of new encryption wrapping key data (32 bytes) 6353 * "props" (optional) -> { prop -> value } 6354 * } 6355 * 6356 * outnvl is unused 6357 */ 6358 /* ARGSUSED */ 6359 static int 6360 zfs_ioc_change_key(const char *dsname, nvlist_t *innvl, nvlist_t *outnvl) 6361 { 6362 int ret; 6363 uint64_t cmd = DCP_CMD_NONE; 6364 dsl_crypto_params_t *dcp = NULL; 6365 nvlist_t *args = NULL, *hidden_args = NULL; 6366 6367 if (strchr(dsname, '@') != NULL || strchr(dsname, '%') != NULL) { 6368 ret = (SET_ERROR(EINVAL)); 6369 goto error; 6370 } 6371 6372 (void) nvlist_lookup_uint64(innvl, "crypt_cmd", &cmd); 6373 (void) nvlist_lookup_nvlist(innvl, "props", &args); 6374 (void) nvlist_lookup_nvlist(innvl, ZPOOL_HIDDEN_ARGS, &hidden_args); 6375 6376 ret = dsl_crypto_params_create_nvlist(cmd, args, hidden_args, &dcp); 6377 if (ret != 0) 6378 goto error; 6379 6380 ret = spa_keystore_change_key(dsname, dcp); 6381 if (ret != 0) 6382 goto error; 6383 6384 dsl_crypto_params_free(dcp, B_FALSE); 6385 6386 return (0); 6387 6388 error: 6389 dsl_crypto_params_free(dcp, B_TRUE); 6390 return (ret); 6391 } 6392 6393 static zfs_ioc_vec_t zfs_ioc_vec[ZFS_IOC_LAST - ZFS_IOC_FIRST]; 6394 6395 static void 6396 zfs_ioctl_register_legacy(zfs_ioc_t ioc, zfs_ioc_legacy_func_t *func, 6397 zfs_secpolicy_func_t *secpolicy, zfs_ioc_namecheck_t namecheck, 6398 boolean_t log_history, zfs_ioc_poolcheck_t pool_check) 6399 { 6400 zfs_ioc_vec_t *vec = &zfs_ioc_vec[ioc - ZFS_IOC_FIRST]; 6401 6402 ASSERT3U(ioc, >=, ZFS_IOC_FIRST); 6403 ASSERT3U(ioc, <, ZFS_IOC_LAST); 6404 ASSERT3P(vec->zvec_legacy_func, ==, NULL); 6405 ASSERT3P(vec->zvec_func, ==, NULL); 6406 6407 vec->zvec_legacy_func = func; 6408 vec->zvec_secpolicy = secpolicy; 6409 vec->zvec_namecheck = namecheck; 6410 vec->zvec_allow_log = log_history; 6411 vec->zvec_pool_check = pool_check; 6412 } 6413 6414 /* 6415 * See the block comment at the beginning of this file for details on 6416 * each argument to this function. 6417 */ 6418 static void 6419 zfs_ioctl_register(const char *name, zfs_ioc_t ioc, zfs_ioc_func_t *func, 6420 zfs_secpolicy_func_t *secpolicy, zfs_ioc_namecheck_t namecheck, 6421 zfs_ioc_poolcheck_t pool_check, boolean_t smush_outnvlist, 6422 boolean_t allow_log) 6423 { 6424 zfs_ioc_vec_t *vec = &zfs_ioc_vec[ioc - ZFS_IOC_FIRST]; 6425 6426 ASSERT3U(ioc, >=, ZFS_IOC_FIRST); 6427 ASSERT3U(ioc, <, ZFS_IOC_LAST); 6428 ASSERT3P(vec->zvec_legacy_func, ==, NULL); 6429 ASSERT3P(vec->zvec_func, ==, NULL); 6430 6431 /* if we are logging, the name must be valid */ 6432 ASSERT(!allow_log || namecheck != NO_NAME); 6433 6434 vec->zvec_name = name; 6435 vec->zvec_func = func; 6436 vec->zvec_secpolicy = secpolicy; 6437 vec->zvec_namecheck = namecheck; 6438 vec->zvec_pool_check = pool_check; 6439 vec->zvec_smush_outnvlist = smush_outnvlist; 6440 vec->zvec_allow_log = allow_log; 6441 } 6442 6443 static void 6444 zfs_ioctl_register_pool(zfs_ioc_t ioc, zfs_ioc_legacy_func_t *func, 6445 zfs_secpolicy_func_t *secpolicy, boolean_t log_history, 6446 zfs_ioc_poolcheck_t pool_check) 6447 { 6448 zfs_ioctl_register_legacy(ioc, func, secpolicy, 6449 POOL_NAME, log_history, pool_check); 6450 } 6451 6452 static void 6453 zfs_ioctl_register_dataset_nolog(zfs_ioc_t ioc, zfs_ioc_legacy_func_t *func, 6454 zfs_secpolicy_func_t *secpolicy, zfs_ioc_poolcheck_t pool_check) 6455 { 6456 zfs_ioctl_register_legacy(ioc, func, secpolicy, 6457 DATASET_NAME, B_FALSE, pool_check); 6458 } 6459 6460 static void 6461 zfs_ioctl_register_pool_modify(zfs_ioc_t ioc, zfs_ioc_legacy_func_t *func) 6462 { 6463 zfs_ioctl_register_legacy(ioc, func, zfs_secpolicy_config, 6464 POOL_NAME, B_TRUE, POOL_CHECK_SUSPENDED | POOL_CHECK_READONLY); 6465 } 6466 6467 static void 6468 zfs_ioctl_register_pool_meta(zfs_ioc_t ioc, zfs_ioc_legacy_func_t *func, 6469 zfs_secpolicy_func_t *secpolicy) 6470 { 6471 zfs_ioctl_register_legacy(ioc, func, secpolicy, 6472 NO_NAME, B_FALSE, POOL_CHECK_NONE); 6473 } 6474 6475 static void 6476 zfs_ioctl_register_dataset_read_secpolicy(zfs_ioc_t ioc, 6477 zfs_ioc_legacy_func_t *func, zfs_secpolicy_func_t *secpolicy) 6478 { 6479 zfs_ioctl_register_legacy(ioc, func, secpolicy, 6480 DATASET_NAME, B_FALSE, POOL_CHECK_SUSPENDED); 6481 } 6482 6483 static void 6484 zfs_ioctl_register_dataset_read(zfs_ioc_t ioc, zfs_ioc_legacy_func_t *func) 6485 { 6486 zfs_ioctl_register_dataset_read_secpolicy(ioc, func, 6487 zfs_secpolicy_read); 6488 } 6489 6490 static void 6491 zfs_ioctl_register_dataset_modify(zfs_ioc_t ioc, zfs_ioc_legacy_func_t *func, 6492 zfs_secpolicy_func_t *secpolicy) 6493 { 6494 zfs_ioctl_register_legacy(ioc, func, secpolicy, 6495 DATASET_NAME, B_TRUE, POOL_CHECK_SUSPENDED | POOL_CHECK_READONLY); 6496 } 6497 6498 static void 6499 zfs_ioctl_init(void) 6500 { 6501 zfs_ioctl_register("snapshot", ZFS_IOC_SNAPSHOT, 6502 zfs_ioc_snapshot, zfs_secpolicy_snapshot, POOL_NAME, 6503 POOL_CHECK_SUSPENDED | POOL_CHECK_READONLY, B_TRUE, B_TRUE); 6504 6505 zfs_ioctl_register("log_history", ZFS_IOC_LOG_HISTORY, 6506 zfs_ioc_log_history, zfs_secpolicy_log_history, NO_NAME, 6507 POOL_CHECK_SUSPENDED | POOL_CHECK_READONLY, B_FALSE, B_FALSE); 6508 6509 zfs_ioctl_register("space_snaps", ZFS_IOC_SPACE_SNAPS, 6510 zfs_ioc_space_snaps, zfs_secpolicy_read, DATASET_NAME, 6511 POOL_CHECK_SUSPENDED, B_FALSE, B_FALSE); 6512 6513 zfs_ioctl_register("send", ZFS_IOC_SEND_NEW, 6514 zfs_ioc_send_new, zfs_secpolicy_send_new, DATASET_NAME, 6515 POOL_CHECK_SUSPENDED, B_FALSE, B_FALSE); 6516 6517 zfs_ioctl_register("send_space", ZFS_IOC_SEND_SPACE, 6518 zfs_ioc_send_space, zfs_secpolicy_read, DATASET_NAME, 6519 POOL_CHECK_SUSPENDED, B_FALSE, B_FALSE); 6520 6521 zfs_ioctl_register("create", ZFS_IOC_CREATE, 6522 zfs_ioc_create, zfs_secpolicy_create_clone, DATASET_NAME, 6523 POOL_CHECK_SUSPENDED | POOL_CHECK_READONLY, B_TRUE, B_TRUE); 6524 6525 zfs_ioctl_register("clone", ZFS_IOC_CLONE, 6526 zfs_ioc_clone, zfs_secpolicy_create_clone, DATASET_NAME, 6527 POOL_CHECK_SUSPENDED | POOL_CHECK_READONLY, B_TRUE, B_TRUE); 6528 6529 zfs_ioctl_register("remap", ZFS_IOC_REMAP, 6530 zfs_ioc_remap, zfs_secpolicy_remap, DATASET_NAME, 6531 POOL_CHECK_SUSPENDED | POOL_CHECK_READONLY, B_FALSE, B_TRUE); 6532 6533 zfs_ioctl_register("destroy_snaps", ZFS_IOC_DESTROY_SNAPS, 6534 zfs_ioc_destroy_snaps, zfs_secpolicy_destroy_snaps, POOL_NAME, 6535 POOL_CHECK_SUSPENDED | POOL_CHECK_READONLY, B_TRUE, B_TRUE); 6536 6537 zfs_ioctl_register("hold", ZFS_IOC_HOLD, 6538 zfs_ioc_hold, zfs_secpolicy_hold, POOL_NAME, 6539 POOL_CHECK_SUSPENDED | POOL_CHECK_READONLY, B_TRUE, B_TRUE); 6540 zfs_ioctl_register("release", ZFS_IOC_RELEASE, 6541 zfs_ioc_release, zfs_secpolicy_release, POOL_NAME, 6542 POOL_CHECK_SUSPENDED | POOL_CHECK_READONLY, B_TRUE, B_TRUE); 6543 6544 zfs_ioctl_register("get_holds", ZFS_IOC_GET_HOLDS, 6545 zfs_ioc_get_holds, zfs_secpolicy_read, DATASET_NAME, 6546 POOL_CHECK_SUSPENDED, B_FALSE, B_FALSE); 6547 6548 zfs_ioctl_register("rollback", ZFS_IOC_ROLLBACK, 6549 zfs_ioc_rollback, zfs_secpolicy_rollback, DATASET_NAME, 6550 POOL_CHECK_SUSPENDED | POOL_CHECK_READONLY, B_FALSE, B_TRUE); 6551 6552 zfs_ioctl_register("bookmark", ZFS_IOC_BOOKMARK, 6553 zfs_ioc_bookmark, zfs_secpolicy_bookmark, POOL_NAME, 6554 POOL_CHECK_SUSPENDED | POOL_CHECK_READONLY, B_TRUE, B_TRUE); 6555 6556 zfs_ioctl_register("get_bookmarks", ZFS_IOC_GET_BOOKMARKS, 6557 zfs_ioc_get_bookmarks, zfs_secpolicy_read, DATASET_NAME, 6558 POOL_CHECK_SUSPENDED, B_FALSE, B_FALSE); 6559 6560 zfs_ioctl_register("destroy_bookmarks", ZFS_IOC_DESTROY_BOOKMARKS, 6561 zfs_ioc_destroy_bookmarks, zfs_secpolicy_destroy_bookmarks, 6562 POOL_NAME, 6563 POOL_CHECK_SUSPENDED | POOL_CHECK_READONLY, B_TRUE, B_TRUE); 6564 6565 zfs_ioctl_register("channel_program", ZFS_IOC_CHANNEL_PROGRAM, 6566 zfs_ioc_channel_program, zfs_secpolicy_config, 6567 POOL_NAME, POOL_CHECK_SUSPENDED | POOL_CHECK_READONLY, B_TRUE, 6568 B_TRUE); 6569 6570 zfs_ioctl_register("zpool_checkpoint", ZFS_IOC_POOL_CHECKPOINT, 6571 zfs_ioc_pool_checkpoint, zfs_secpolicy_config, POOL_NAME, 6572 POOL_CHECK_SUSPENDED | POOL_CHECK_READONLY, B_TRUE, B_TRUE); 6573 6574 zfs_ioctl_register("zpool_discard_checkpoint", 6575 ZFS_IOC_POOL_DISCARD_CHECKPOINT, zfs_ioc_pool_discard_checkpoint, 6576 zfs_secpolicy_config, POOL_NAME, 6577 POOL_CHECK_SUSPENDED | POOL_CHECK_READONLY, B_TRUE, B_TRUE); 6578 6579 zfs_ioctl_register("initialize", ZFS_IOC_POOL_INITIALIZE, 6580 zfs_ioc_pool_initialize, zfs_secpolicy_config, POOL_NAME, 6581 POOL_CHECK_SUSPENDED | POOL_CHECK_READONLY, B_TRUE, B_TRUE); 6582 6583 zfs_ioctl_register("trim", ZFS_IOC_POOL_TRIM, 6584 zfs_ioc_pool_trim, zfs_secpolicy_config, POOL_NAME, 6585 POOL_CHECK_SUSPENDED | POOL_CHECK_READONLY, B_TRUE, B_TRUE); 6586 6587 zfs_ioctl_register("sync", ZFS_IOC_POOL_SYNC, 6588 zfs_ioc_pool_sync, zfs_secpolicy_none, POOL_NAME, 6589 POOL_CHECK_SUSPENDED | POOL_CHECK_READONLY, B_FALSE, B_FALSE); 6590 6591 zfs_ioctl_register("load-key", ZFS_IOC_LOAD_KEY, 6592 zfs_ioc_load_key, zfs_secpolicy_load_key, 6593 DATASET_NAME, POOL_CHECK_SUSPENDED, B_TRUE, B_TRUE); 6594 zfs_ioctl_register("unload-key", ZFS_IOC_UNLOAD_KEY, 6595 zfs_ioc_unload_key, zfs_secpolicy_load_key, 6596 DATASET_NAME, POOL_CHECK_SUSPENDED, B_TRUE, B_TRUE); 6597 zfs_ioctl_register("change-key", ZFS_IOC_CHANGE_KEY, 6598 zfs_ioc_change_key, zfs_secpolicy_change_key, 6599 DATASET_NAME, POOL_CHECK_SUSPENDED | POOL_CHECK_READONLY, 6600 B_TRUE, B_TRUE); 6601 6602 /* IOCTLS that use the legacy function signature */ 6603 6604 zfs_ioctl_register_legacy(ZFS_IOC_POOL_FREEZE, zfs_ioc_pool_freeze, 6605 zfs_secpolicy_config, NO_NAME, B_FALSE, POOL_CHECK_READONLY); 6606 6607 zfs_ioctl_register_pool(ZFS_IOC_POOL_CREATE, zfs_ioc_pool_create, 6608 zfs_secpolicy_config, B_TRUE, POOL_CHECK_NONE); 6609 zfs_ioctl_register_pool_modify(ZFS_IOC_POOL_SCAN, 6610 zfs_ioc_pool_scan); 6611 zfs_ioctl_register_pool_modify(ZFS_IOC_POOL_UPGRADE, 6612 zfs_ioc_pool_upgrade); 6613 zfs_ioctl_register_pool_modify(ZFS_IOC_VDEV_ADD, 6614 zfs_ioc_vdev_add); 6615 zfs_ioctl_register_pool_modify(ZFS_IOC_VDEV_REMOVE, 6616 zfs_ioc_vdev_remove); 6617 zfs_ioctl_register_pool_modify(ZFS_IOC_VDEV_SET_STATE, 6618 zfs_ioc_vdev_set_state); 6619 zfs_ioctl_register_pool_modify(ZFS_IOC_VDEV_ATTACH, 6620 zfs_ioc_vdev_attach); 6621 zfs_ioctl_register_pool_modify(ZFS_IOC_VDEV_DETACH, 6622 zfs_ioc_vdev_detach); 6623 zfs_ioctl_register_pool_modify(ZFS_IOC_VDEV_SETPATH, 6624 zfs_ioc_vdev_setpath); 6625 zfs_ioctl_register_pool_modify(ZFS_IOC_VDEV_SETFRU, 6626 zfs_ioc_vdev_setfru); 6627 zfs_ioctl_register_pool_modify(ZFS_IOC_POOL_SET_PROPS, 6628 zfs_ioc_pool_set_props); 6629 zfs_ioctl_register_pool_modify(ZFS_IOC_VDEV_SPLIT, 6630 zfs_ioc_vdev_split); 6631 zfs_ioctl_register_pool_modify(ZFS_IOC_POOL_REGUID, 6632 zfs_ioc_pool_reguid); 6633 6634 zfs_ioctl_register_pool_meta(ZFS_IOC_POOL_CONFIGS, 6635 zfs_ioc_pool_configs, zfs_secpolicy_none); 6636 zfs_ioctl_register_pool_meta(ZFS_IOC_POOL_TRYIMPORT, 6637 zfs_ioc_pool_tryimport, zfs_secpolicy_config); 6638 zfs_ioctl_register_pool_meta(ZFS_IOC_INJECT_FAULT, 6639 zfs_ioc_inject_fault, zfs_secpolicy_inject); 6640 zfs_ioctl_register_pool_meta(ZFS_IOC_CLEAR_FAULT, 6641 zfs_ioc_clear_fault, zfs_secpolicy_inject); 6642 zfs_ioctl_register_pool_meta(ZFS_IOC_INJECT_LIST_NEXT, 6643 zfs_ioc_inject_list_next, zfs_secpolicy_inject); 6644 6645 /* 6646 * pool destroy, and export don't log the history as part of 6647 * zfsdev_ioctl, but rather zfs_ioc_pool_export 6648 * does the logging of those commands. 6649 */ 6650 zfs_ioctl_register_pool(ZFS_IOC_POOL_DESTROY, zfs_ioc_pool_destroy, 6651 zfs_secpolicy_config, B_FALSE, POOL_CHECK_NONE); 6652 zfs_ioctl_register_pool(ZFS_IOC_POOL_EXPORT, zfs_ioc_pool_export, 6653 zfs_secpolicy_config, B_FALSE, POOL_CHECK_NONE); 6654 6655 zfs_ioctl_register_pool(ZFS_IOC_POOL_STATS, zfs_ioc_pool_stats, 6656 zfs_secpolicy_read, B_FALSE, POOL_CHECK_NONE); 6657 zfs_ioctl_register_pool(ZFS_IOC_POOL_GET_PROPS, zfs_ioc_pool_get_props, 6658 zfs_secpolicy_read, B_FALSE, POOL_CHECK_NONE); 6659 6660 zfs_ioctl_register_pool(ZFS_IOC_ERROR_LOG, zfs_ioc_error_log, 6661 zfs_secpolicy_inject, B_FALSE, POOL_CHECK_SUSPENDED); 6662 zfs_ioctl_register_pool(ZFS_IOC_DSOBJ_TO_DSNAME, 6663 zfs_ioc_dsobj_to_dsname, 6664 zfs_secpolicy_diff, B_FALSE, POOL_CHECK_SUSPENDED); 6665 zfs_ioctl_register_pool(ZFS_IOC_POOL_GET_HISTORY, 6666 zfs_ioc_pool_get_history, 6667 zfs_secpolicy_config, B_FALSE, POOL_CHECK_SUSPENDED); 6668 6669 zfs_ioctl_register_pool(ZFS_IOC_POOL_IMPORT, zfs_ioc_pool_import, 6670 zfs_secpolicy_config, B_TRUE, POOL_CHECK_NONE); 6671 6672 zfs_ioctl_register_pool(ZFS_IOC_CLEAR, zfs_ioc_clear, 6673 zfs_secpolicy_config, B_TRUE, POOL_CHECK_READONLY); 6674 zfs_ioctl_register_pool(ZFS_IOC_POOL_REOPEN, zfs_ioc_pool_reopen, 6675 zfs_secpolicy_config, B_TRUE, POOL_CHECK_SUSPENDED); 6676 6677 zfs_ioctl_register_dataset_read(ZFS_IOC_SPACE_WRITTEN, 6678 zfs_ioc_space_written); 6679 zfs_ioctl_register_dataset_read(ZFS_IOC_OBJSET_RECVD_PROPS, 6680 zfs_ioc_objset_recvd_props); 6681 zfs_ioctl_register_dataset_read(ZFS_IOC_NEXT_OBJ, 6682 zfs_ioc_next_obj); 6683 zfs_ioctl_register_dataset_read(ZFS_IOC_GET_FSACL, 6684 zfs_ioc_get_fsacl); 6685 zfs_ioctl_register_dataset_read(ZFS_IOC_OBJSET_STATS, 6686 zfs_ioc_objset_stats); 6687 zfs_ioctl_register_dataset_read(ZFS_IOC_OBJSET_ZPLPROPS, 6688 zfs_ioc_objset_zplprops); 6689 zfs_ioctl_register_dataset_read(ZFS_IOC_DATASET_LIST_NEXT, 6690 zfs_ioc_dataset_list_next); 6691 zfs_ioctl_register_dataset_read(ZFS_IOC_SNAPSHOT_LIST_NEXT, 6692 zfs_ioc_snapshot_list_next); 6693 zfs_ioctl_register_dataset_read(ZFS_IOC_SEND_PROGRESS, 6694 zfs_ioc_send_progress); 6695 6696 zfs_ioctl_register_dataset_read_secpolicy(ZFS_IOC_DIFF, 6697 zfs_ioc_diff, zfs_secpolicy_diff); 6698 zfs_ioctl_register_dataset_read_secpolicy(ZFS_IOC_OBJ_TO_STATS, 6699 zfs_ioc_obj_to_stats, zfs_secpolicy_diff); 6700 zfs_ioctl_register_dataset_read_secpolicy(ZFS_IOC_OBJ_TO_PATH, 6701 zfs_ioc_obj_to_path, zfs_secpolicy_diff); 6702 zfs_ioctl_register_dataset_read_secpolicy(ZFS_IOC_USERSPACE_ONE, 6703 zfs_ioc_userspace_one, zfs_secpolicy_userspace_one); 6704 zfs_ioctl_register_dataset_read_secpolicy(ZFS_IOC_USERSPACE_MANY, 6705 zfs_ioc_userspace_many, zfs_secpolicy_userspace_many); 6706 zfs_ioctl_register_dataset_read_secpolicy(ZFS_IOC_SEND, 6707 zfs_ioc_send, zfs_secpolicy_send); 6708 6709 zfs_ioctl_register_dataset_modify(ZFS_IOC_SET_PROP, zfs_ioc_set_prop, 6710 zfs_secpolicy_none); 6711 zfs_ioctl_register_dataset_modify(ZFS_IOC_DESTROY, zfs_ioc_destroy, 6712 zfs_secpolicy_destroy); 6713 zfs_ioctl_register_dataset_modify(ZFS_IOC_RENAME, zfs_ioc_rename, 6714 zfs_secpolicy_rename); 6715 zfs_ioctl_register_dataset_modify(ZFS_IOC_RECV, zfs_ioc_recv, 6716 zfs_secpolicy_recv); 6717 zfs_ioctl_register_dataset_modify(ZFS_IOC_PROMOTE, zfs_ioc_promote, 6718 zfs_secpolicy_promote); 6719 zfs_ioctl_register_dataset_modify(ZFS_IOC_INHERIT_PROP, 6720 zfs_ioc_inherit_prop, zfs_secpolicy_inherit_prop); 6721 zfs_ioctl_register_dataset_modify(ZFS_IOC_SET_FSACL, zfs_ioc_set_fsacl, 6722 zfs_secpolicy_set_fsacl); 6723 6724 zfs_ioctl_register_dataset_nolog(ZFS_IOC_SHARE, zfs_ioc_share, 6725 zfs_secpolicy_share, POOL_CHECK_NONE); 6726 zfs_ioctl_register_dataset_nolog(ZFS_IOC_SMB_ACL, zfs_ioc_smb_acl, 6727 zfs_secpolicy_smb_acl, POOL_CHECK_NONE); 6728 zfs_ioctl_register_dataset_nolog(ZFS_IOC_USERSPACE_UPGRADE, 6729 zfs_ioc_userspace_upgrade, zfs_secpolicy_userspace_upgrade, 6730 POOL_CHECK_SUSPENDED | POOL_CHECK_READONLY); 6731 zfs_ioctl_register_dataset_nolog(ZFS_IOC_TMP_SNAPSHOT, 6732 zfs_ioc_tmp_snapshot, zfs_secpolicy_tmp_snapshot, 6733 POOL_CHECK_SUSPENDED | POOL_CHECK_READONLY); 6734 } 6735 6736 int 6737 pool_status_check(const char *name, zfs_ioc_namecheck_t type, 6738 zfs_ioc_poolcheck_t check) 6739 { 6740 spa_t *spa; 6741 int error; 6742 6743 ASSERT(type == POOL_NAME || type == DATASET_NAME); 6744 6745 if (check & POOL_CHECK_NONE) 6746 return (0); 6747 6748 error = spa_open(name, &spa, FTAG); 6749 if (error == 0) { 6750 if ((check & POOL_CHECK_SUSPENDED) && spa_suspended(spa)) 6751 error = SET_ERROR(EAGAIN); 6752 else if ((check & POOL_CHECK_READONLY) && !spa_writeable(spa)) 6753 error = SET_ERROR(EROFS); 6754 spa_close(spa, FTAG); 6755 } 6756 return (error); 6757 } 6758 6759 /* 6760 * Find a free minor number. 6761 */ 6762 minor_t 6763 zfsdev_minor_alloc(void) 6764 { 6765 static minor_t last_minor; 6766 minor_t m; 6767 6768 ASSERT(MUTEX_HELD(&zfsdev_state_lock)); 6769 6770 for (m = last_minor + 1; m != last_minor; m++) { 6771 if (m > ZFSDEV_MAX_MINOR) 6772 m = 1; 6773 if (ddi_get_soft_state(zfsdev_state, m) == NULL) { 6774 last_minor = m; 6775 return (m); 6776 } 6777 } 6778 6779 return (0); 6780 } 6781 6782 static int 6783 zfs_ctldev_init(dev_t *devp) 6784 { 6785 minor_t minor; 6786 zfs_soft_state_t *zs; 6787 6788 ASSERT(MUTEX_HELD(&zfsdev_state_lock)); 6789 ASSERT(getminor(*devp) == 0); 6790 6791 minor = zfsdev_minor_alloc(); 6792 if (minor == 0) 6793 return (SET_ERROR(ENXIO)); 6794 6795 if (ddi_soft_state_zalloc(zfsdev_state, minor) != DDI_SUCCESS) 6796 return (SET_ERROR(EAGAIN)); 6797 6798 *devp = makedevice(getemajor(*devp), minor); 6799 6800 zs = ddi_get_soft_state(zfsdev_state, minor); 6801 zs->zss_type = ZSST_CTLDEV; 6802 zfs_onexit_init((zfs_onexit_t **)&zs->zss_data); 6803 6804 return (0); 6805 } 6806 6807 static void 6808 zfs_ctldev_destroy(zfs_onexit_t *zo, minor_t minor) 6809 { 6810 ASSERT(MUTEX_HELD(&zfsdev_state_lock)); 6811 6812 zfs_onexit_destroy(zo); 6813 ddi_soft_state_free(zfsdev_state, minor); 6814 } 6815 6816 void * 6817 zfsdev_get_soft_state(minor_t minor, enum zfs_soft_state_type which) 6818 { 6819 zfs_soft_state_t *zp; 6820 6821 zp = ddi_get_soft_state(zfsdev_state, minor); 6822 if (zp == NULL || zp->zss_type != which) 6823 return (NULL); 6824 6825 return (zp->zss_data); 6826 } 6827 6828 static int 6829 zfsdev_open(dev_t *devp, int flag, int otyp, cred_t *cr) 6830 { 6831 int error = 0; 6832 6833 if (getminor(*devp) != 0) 6834 return (zvol_open(devp, flag, otyp, cr)); 6835 6836 /* This is the control device. Allocate a new minor if requested. */ 6837 if (flag & FEXCL) { 6838 mutex_enter(&zfsdev_state_lock); 6839 error = zfs_ctldev_init(devp); 6840 mutex_exit(&zfsdev_state_lock); 6841 } 6842 6843 return (error); 6844 } 6845 6846 static int 6847 zfsdev_close(dev_t dev, int flag, int otyp, cred_t *cr) 6848 { 6849 zfs_onexit_t *zo; 6850 minor_t minor = getminor(dev); 6851 6852 if (minor == 0) 6853 return (0); 6854 6855 mutex_enter(&zfsdev_state_lock); 6856 zo = zfsdev_get_soft_state(minor, ZSST_CTLDEV); 6857 if (zo == NULL) { 6858 mutex_exit(&zfsdev_state_lock); 6859 return (zvol_close(dev, flag, otyp, cr)); 6860 } 6861 zfs_ctldev_destroy(zo, minor); 6862 mutex_exit(&zfsdev_state_lock); 6863 6864 return (0); 6865 } 6866 6867 static int 6868 zfsdev_ioctl(dev_t dev, int cmd, intptr_t arg, int flag, cred_t *cr, int *rvalp) 6869 { 6870 zfs_cmd_t *zc; 6871 uint_t vecnum; 6872 int error, rc, len; 6873 minor_t minor = getminor(dev); 6874 const zfs_ioc_vec_t *vec; 6875 char *saved_poolname = NULL; 6876 nvlist_t *innvl = NULL; 6877 6878 if (minor != 0 && 6879 zfsdev_get_soft_state(minor, ZSST_CTLDEV) == NULL) 6880 return (zvol_ioctl(dev, cmd, arg, flag, cr, rvalp)); 6881 6882 vecnum = cmd - ZFS_IOC_FIRST; 6883 ASSERT3U(getmajor(dev), ==, ddi_driver_major(zfs_dip)); 6884 6885 if (vecnum >= sizeof (zfs_ioc_vec) / sizeof (zfs_ioc_vec[0])) 6886 return (SET_ERROR(EINVAL)); 6887 vec = &zfs_ioc_vec[vecnum]; 6888 6889 zc = kmem_zalloc(sizeof (zfs_cmd_t), KM_SLEEP); 6890 6891 error = ddi_copyin((void *)arg, zc, sizeof (zfs_cmd_t), flag); 6892 if (error != 0) { 6893 error = SET_ERROR(EFAULT); 6894 goto out; 6895 } 6896 6897 zc->zc_iflags = flag & FKIOCTL; 6898 if (zc->zc_nvlist_src_size != 0) { 6899 error = get_nvlist(zc->zc_nvlist_src, zc->zc_nvlist_src_size, 6900 zc->zc_iflags, &innvl); 6901 if (error != 0) 6902 goto out; 6903 } 6904 6905 /* 6906 * Ensure that all pool/dataset names are valid before we pass down to 6907 * the lower layers. 6908 */ 6909 zc->zc_name[sizeof (zc->zc_name) - 1] = '\0'; 6910 switch (vec->zvec_namecheck) { 6911 case POOL_NAME: 6912 if (pool_namecheck(zc->zc_name, NULL, NULL) != 0) 6913 error = SET_ERROR(EINVAL); 6914 else 6915 error = pool_status_check(zc->zc_name, 6916 vec->zvec_namecheck, vec->zvec_pool_check); 6917 break; 6918 6919 case DATASET_NAME: 6920 if (dataset_namecheck(zc->zc_name, NULL, NULL) != 0) 6921 error = SET_ERROR(EINVAL); 6922 else 6923 error = pool_status_check(zc->zc_name, 6924 vec->zvec_namecheck, vec->zvec_pool_check); 6925 break; 6926 6927 case NO_NAME: 6928 break; 6929 } 6930 6931 6932 if (error == 0) 6933 error = vec->zvec_secpolicy(zc, innvl, cr); 6934 6935 if (error != 0) 6936 goto out; 6937 6938 /* legacy ioctls can modify zc_name */ 6939 len = strcspn(zc->zc_name, "/@#") + 1; 6940 saved_poolname = kmem_alloc(len, KM_SLEEP); 6941 (void) strlcpy(saved_poolname, zc->zc_name, len); 6942 6943 if (vec->zvec_func != NULL) { 6944 nvlist_t *outnvl; 6945 int puterror = 0; 6946 spa_t *spa; 6947 nvlist_t *lognv = NULL; 6948 6949 ASSERT(vec->zvec_legacy_func == NULL); 6950 6951 /* 6952 * Add the innvl to the lognv before calling the func, 6953 * in case the func changes the innvl. 6954 */ 6955 if (vec->zvec_allow_log) { 6956 lognv = fnvlist_alloc(); 6957 fnvlist_add_string(lognv, ZPOOL_HIST_IOCTL, 6958 vec->zvec_name); 6959 if (!nvlist_empty(innvl)) { 6960 fnvlist_add_nvlist(lognv, ZPOOL_HIST_INPUT_NVL, 6961 innvl); 6962 } 6963 } 6964 6965 outnvl = fnvlist_alloc(); 6966 error = vec->zvec_func(zc->zc_name, innvl, outnvl); 6967 6968 /* 6969 * Some commands can partially execute, modify state, and still 6970 * return an error. In these cases, attempt to record what 6971 * was modified. 6972 */ 6973 if ((error == 0 || 6974 (cmd == ZFS_IOC_CHANNEL_PROGRAM && error != EINVAL)) && 6975 vec->zvec_allow_log && 6976 spa_open(zc->zc_name, &spa, FTAG) == 0) { 6977 if (!nvlist_empty(outnvl)) { 6978 fnvlist_add_nvlist(lognv, ZPOOL_HIST_OUTPUT_NVL, 6979 outnvl); 6980 } 6981 if (error != 0) { 6982 fnvlist_add_int64(lognv, ZPOOL_HIST_ERRNO, 6983 error); 6984 } 6985 (void) spa_history_log_nvl(spa, lognv); 6986 spa_close(spa, FTAG); 6987 } 6988 fnvlist_free(lognv); 6989 6990 if (!nvlist_empty(outnvl) || zc->zc_nvlist_dst_size != 0) { 6991 int smusherror = 0; 6992 if (vec->zvec_smush_outnvlist) { 6993 smusherror = nvlist_smush(outnvl, 6994 zc->zc_nvlist_dst_size); 6995 } 6996 if (smusherror == 0) 6997 puterror = put_nvlist(zc, outnvl); 6998 } 6999 7000 if (puterror != 0) 7001 error = puterror; 7002 7003 nvlist_free(outnvl); 7004 } else { 7005 error = vec->zvec_legacy_func(zc); 7006 } 7007 7008 out: 7009 nvlist_free(innvl); 7010 rc = ddi_copyout(zc, (void *)arg, sizeof (zfs_cmd_t), flag); 7011 if (error == 0 && rc != 0) 7012 error = SET_ERROR(EFAULT); 7013 if (error == 0 && vec->zvec_allow_log) { 7014 char *s = tsd_get(zfs_allow_log_key); 7015 if (s != NULL) 7016 strfree(s); 7017 (void) tsd_set(zfs_allow_log_key, saved_poolname); 7018 } else { 7019 if (saved_poolname != NULL) 7020 strfree(saved_poolname); 7021 } 7022 7023 kmem_free(zc, sizeof (zfs_cmd_t)); 7024 return (error); 7025 } 7026 7027 static int 7028 zfs_attach(dev_info_t *dip, ddi_attach_cmd_t cmd) 7029 { 7030 if (cmd != DDI_ATTACH) 7031 return (DDI_FAILURE); 7032 7033 if (ddi_create_minor_node(dip, "zfs", S_IFCHR, 0, 7034 DDI_PSEUDO, 0) == DDI_FAILURE) 7035 return (DDI_FAILURE); 7036 7037 zfs_dip = dip; 7038 7039 ddi_report_dev(dip); 7040 7041 return (DDI_SUCCESS); 7042 } 7043 7044 static int 7045 zfs_detach(dev_info_t *dip, ddi_detach_cmd_t cmd) 7046 { 7047 if (spa_busy() || zfs_busy() || zvol_busy()) 7048 return (DDI_FAILURE); 7049 7050 if (cmd != DDI_DETACH) 7051 return (DDI_FAILURE); 7052 7053 zfs_dip = NULL; 7054 7055 ddi_prop_remove_all(dip); 7056 ddi_remove_minor_node(dip, NULL); 7057 7058 return (DDI_SUCCESS); 7059 } 7060 7061 /*ARGSUSED*/ 7062 static int 7063 zfs_info(dev_info_t *dip, ddi_info_cmd_t infocmd, void *arg, void **result) 7064 { 7065 switch (infocmd) { 7066 case DDI_INFO_DEVT2DEVINFO: 7067 *result = zfs_dip; 7068 return (DDI_SUCCESS); 7069 7070 case DDI_INFO_DEVT2INSTANCE: 7071 *result = (void *)0; 7072 return (DDI_SUCCESS); 7073 } 7074 7075 return (DDI_FAILURE); 7076 } 7077 7078 /* 7079 * OK, so this is a little weird. 7080 * 7081 * /dev/zfs is the control node, i.e. minor 0. 7082 * /dev/zvol/[r]dsk/pool/dataset are the zvols, minor > 0. 7083 * 7084 * /dev/zfs has basically nothing to do except serve up ioctls, 7085 * so most of the standard driver entry points are in zvol.c. 7086 */ 7087 static struct cb_ops zfs_cb_ops = { 7088 zfsdev_open, /* open */ 7089 zfsdev_close, /* close */ 7090 zvol_strategy, /* strategy */ 7091 nodev, /* print */ 7092 zvol_dump, /* dump */ 7093 zvol_read, /* read */ 7094 zvol_write, /* write */ 7095 zfsdev_ioctl, /* ioctl */ 7096 nodev, /* devmap */ 7097 nodev, /* mmap */ 7098 nodev, /* segmap */ 7099 nochpoll, /* poll */ 7100 ddi_prop_op, /* prop_op */ 7101 NULL, /* streamtab */ 7102 D_NEW | D_MP | D_64BIT, /* Driver compatibility flag */ 7103 CB_REV, /* version */ 7104 nodev, /* async read */ 7105 nodev, /* async write */ 7106 }; 7107 7108 static struct dev_ops zfs_dev_ops = { 7109 DEVO_REV, /* version */ 7110 0, /* refcnt */ 7111 zfs_info, /* info */ 7112 nulldev, /* identify */ 7113 nulldev, /* probe */ 7114 zfs_attach, /* attach */ 7115 zfs_detach, /* detach */ 7116 nodev, /* reset */ 7117 &zfs_cb_ops, /* driver operations */ 7118 NULL, /* no bus operations */ 7119 NULL, /* power */ 7120 ddi_quiesce_not_needed, /* quiesce */ 7121 }; 7122 7123 static struct modldrv zfs_modldrv = { 7124 &mod_driverops, 7125 "ZFS storage pool", 7126 &zfs_dev_ops 7127 }; 7128 7129 static struct modlinkage modlinkage = { 7130 MODREV_1, 7131 (void *)&zfs_modlfs, 7132 (void *)&zfs_modldrv, 7133 NULL 7134 }; 7135 7136 static void 7137 zfs_allow_log_destroy(void *arg) 7138 { 7139 char *poolname = arg; 7140 strfree(poolname); 7141 } 7142 7143 int 7144 _init(void) 7145 { 7146 int error; 7147 7148 spa_init(FREAD | FWRITE); 7149 zfs_init(); 7150 zvol_init(); 7151 zfs_ioctl_init(); 7152 7153 if ((error = mod_install(&modlinkage)) != 0) { 7154 zvol_fini(); 7155 zfs_fini(); 7156 spa_fini(); 7157 return (error); 7158 } 7159 7160 tsd_create(&zfs_fsyncer_key, NULL); 7161 tsd_create(&rrw_tsd_key, rrw_tsd_destroy); 7162 tsd_create(&zfs_allow_log_key, zfs_allow_log_destroy); 7163 7164 error = ldi_ident_from_mod(&modlinkage, &zfs_li); 7165 ASSERT(error == 0); 7166 mutex_init(&zfs_share_lock, NULL, MUTEX_DEFAULT, NULL); 7167 7168 return (0); 7169 } 7170 7171 int 7172 _fini(void) 7173 { 7174 int error; 7175 7176 if (spa_busy() || zfs_busy() || zvol_busy() || zio_injection_enabled) 7177 return (SET_ERROR(EBUSY)); 7178 7179 if ((error = mod_remove(&modlinkage)) != 0) 7180 return (error); 7181 7182 zvol_fini(); 7183 zfs_fini(); 7184 spa_fini(); 7185 if (zfs_nfsshare_inited) 7186 (void) ddi_modclose(nfs_mod); 7187 if (zfs_smbshare_inited) 7188 (void) ddi_modclose(smbsrv_mod); 7189 if (zfs_nfsshare_inited || zfs_smbshare_inited) 7190 (void) ddi_modclose(sharefs_mod); 7191 7192 tsd_destroy(&zfs_fsyncer_key); 7193 ldi_ident_release(zfs_li); 7194 zfs_li = NULL; 7195 mutex_destroy(&zfs_share_lock); 7196 7197 return (error); 7198 } 7199 7200 int 7201 _info(struct modinfo *modinfop) 7202 { 7203 return (mod_info(&modlinkage, modinfop)); 7204 } 7205