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 2015 Nexenta Systems, Inc. All rights reserved. 28 * Copyright (c) 2014, 2016 Joyent, Inc. All rights reserved. 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 2017 RackTop Systems. 35 * Copyright (c) 2017, Datto, Inc. All rights reserved. 36 */ 37 38 /* 39 * ZFS ioctls. 40 * 41 * This file handles the ioctls to /dev/zfs, used for configuring ZFS storage 42 * pools and filesystems, e.g. with /sbin/zfs and /sbin/zpool. 43 * 44 * There are two ways that we handle ioctls: the legacy way where almost 45 * all of the logic is in the ioctl callback, and the new way where most 46 * of the marshalling is handled in the common entry point, zfsdev_ioctl(). 47 * 48 * Non-legacy ioctls should be registered by calling 49 * zfs_ioctl_register() from zfs_ioctl_init(). The ioctl is invoked 50 * from userland by lzc_ioctl(). 51 * 52 * The registration arguments are as follows: 53 * 54 * const char *name 55 * The name of the ioctl. This is used for history logging. If the 56 * ioctl returns successfully (the callback returns 0), and allow_log 57 * is true, then a history log entry will be recorded with the input & 58 * output nvlists. The log entry can be printed with "zpool history -i". 59 * 60 * zfs_ioc_t ioc 61 * The ioctl request number, which userland will pass to ioctl(2). 62 * The ioctl numbers can change from release to release, because 63 * the caller (libzfs) must be matched to the kernel. 64 * 65 * zfs_secpolicy_func_t *secpolicy 66 * This function will be called before the zfs_ioc_func_t, to 67 * determine if this operation is permitted. It should return EPERM 68 * on failure, and 0 on success. Checks include determining if the 69 * dataset is visible in this zone, and if the user has either all 70 * zfs privileges in the zone (SYS_MOUNT), or has been granted permission 71 * to do this operation on this dataset with "zfs allow". 72 * 73 * zfs_ioc_namecheck_t namecheck 74 * This specifies what to expect in the zfs_cmd_t:zc_name -- a pool 75 * name, a dataset name, or nothing. If the name is not well-formed, 76 * the ioctl will fail and the callback will not be called. 77 * Therefore, the callback can assume that the name is well-formed 78 * (e.g. is null-terminated, doesn't have more than one '@' character, 79 * doesn't have invalid characters). 80 * 81 * zfs_ioc_poolcheck_t pool_check 82 * This specifies requirements on the pool state. If the pool does 83 * not meet them (is suspended or is readonly), the ioctl will fail 84 * and the callback will not be called. If any checks are specified 85 * (i.e. it is not POOL_CHECK_NONE), namecheck must not be NO_NAME. 86 * Multiple checks can be or-ed together (e.g. POOL_CHECK_SUSPENDED | 87 * POOL_CHECK_READONLY). 88 * 89 * boolean_t smush_outnvlist 90 * If smush_outnvlist is true, then the output is presumed to be a 91 * list of errors, and it will be "smushed" down to fit into the 92 * caller's buffer, by removing some entries and replacing them with a 93 * single "N_MORE_ERRORS" entry indicating how many were removed. See 94 * nvlist_smush() for details. If smush_outnvlist is false, and the 95 * outnvlist does not fit into the userland-provided buffer, then the 96 * ioctl will fail with ENOMEM. 97 * 98 * zfs_ioc_func_t *func 99 * The callback function that will perform the operation. 100 * 101 * The callback should return 0 on success, or an error number on 102 * failure. If the function fails, the userland ioctl will return -1, 103 * and errno will be set to the callback's return value. The callback 104 * will be called with the following arguments: 105 * 106 * const char *name 107 * The name of the pool or dataset to operate on, from 108 * zfs_cmd_t:zc_name. The 'namecheck' argument specifies the 109 * expected type (pool, dataset, or none). 110 * 111 * nvlist_t *innvl 112 * The input nvlist, deserialized from zfs_cmd_t:zc_nvlist_src. Or 113 * NULL if no input nvlist was provided. Changes to this nvlist are 114 * ignored. If the input nvlist could not be deserialized, the 115 * ioctl will fail and the callback will not be called. 116 * 117 * nvlist_t *outnvl 118 * The output nvlist, initially empty. The callback can fill it in, 119 * and it will be returned to userland by serializing it into 120 * zfs_cmd_t:zc_nvlist_dst. If it is non-empty, and serialization 121 * fails (e.g. because the caller didn't supply a large enough 122 * buffer), then the overall ioctl will fail. See the 123 * 'smush_nvlist' argument above for additional behaviors. 124 * 125 * There are two typical uses of the output nvlist: 126 * - To return state, e.g. property values. In this case, 127 * smush_outnvlist should be false. If the buffer was not large 128 * enough, the caller will reallocate a larger buffer and try 129 * the ioctl again. 130 * 131 * - To return multiple errors from an ioctl which makes on-disk 132 * changes. In this case, smush_outnvlist should be true. 133 * Ioctls which make on-disk modifications should generally not 134 * use the outnvl if they succeed, because the caller can not 135 * distinguish between the operation failing, and 136 * deserialization failing. 137 */ 138 139 #include <sys/types.h> 140 #include <sys/param.h> 141 #include <sys/errno.h> 142 #include <sys/uio.h> 143 #include <sys/buf.h> 144 #include <sys/modctl.h> 145 #include <sys/open.h> 146 #include <sys/file.h> 147 #include <sys/kmem.h> 148 #include <sys/conf.h> 149 #include <sys/cmn_err.h> 150 #include <sys/stat.h> 151 #include <sys/zfs_ioctl.h> 152 #include <sys/zfs_vfsops.h> 153 #include <sys/zfs_znode.h> 154 #include <sys/zap.h> 155 #include <sys/spa.h> 156 #include <sys/spa_impl.h> 157 #include <sys/vdev.h> 158 #include <sys/priv_impl.h> 159 #include <sys/dmu.h> 160 #include <sys/dsl_dir.h> 161 #include <sys/dsl_dataset.h> 162 #include <sys/dsl_prop.h> 163 #include <sys/dsl_deleg.h> 164 #include <sys/dmu_objset.h> 165 #include <sys/dmu_impl.h> 166 #include <sys/dmu_tx.h> 167 #include <sys/ddi.h> 168 #include <sys/sunddi.h> 169 #include <sys/sunldi.h> 170 #include <sys/policy.h> 171 #include <sys/zone.h> 172 #include <sys/nvpair.h> 173 #include <sys/pathname.h> 174 #include <sys/mount.h> 175 #include <sys/sdt.h> 176 #include <sys/fs/zfs.h> 177 #include <sys/zfs_ctldir.h> 178 #include <sys/zfs_dir.h> 179 #include <sys/zfs_onexit.h> 180 #include <sys/zvol.h> 181 #include <sys/dsl_scan.h> 182 #include <sharefs/share.h> 183 #include <sys/dmu_objset.h> 184 #include <sys/dmu_recv.h> 185 #include <sys/dmu_send.h> 186 #include <sys/dsl_destroy.h> 187 #include <sys/dsl_bookmark.h> 188 #include <sys/dsl_userhold.h> 189 #include <sys/zfeature.h> 190 #include <sys/zcp.h> 191 #include <sys/zio_checksum.h> 192 #include <sys/vdev_removal.h> 193 #include <sys/vdev_impl.h> 194 #include <sys/vdev_initialize.h> 195 #include <sys/dsl_crypt.h> 196 197 #include "zfs_namecheck.h" 198 #include "zfs_prop.h" 199 #include "zfs_deleg.h" 200 #include "zfs_comutil.h" 201 202 #include "lua.h" 203 #include "lauxlib.h" 204 205 extern struct modlfs zfs_modlfs; 206 207 extern void zfs_init(void); 208 extern void zfs_fini(void); 209 210 ldi_ident_t zfs_li = NULL; 211 dev_info_t *zfs_dip; 212 213 uint_t zfs_fsyncer_key; 214 extern uint_t rrw_tsd_key; 215 static uint_t zfs_allow_log_key; 216 217 typedef int zfs_ioc_legacy_func_t(zfs_cmd_t *); 218 typedef int zfs_ioc_func_t(const char *, nvlist_t *, nvlist_t *); 219 typedef int zfs_secpolicy_func_t(zfs_cmd_t *, nvlist_t *, cred_t *); 220 221 typedef enum { 222 NO_NAME, 223 POOL_NAME, 224 DATASET_NAME 225 } zfs_ioc_namecheck_t; 226 227 typedef enum { 228 POOL_CHECK_NONE = 1 << 0, 229 POOL_CHECK_SUSPENDED = 1 << 1, 230 POOL_CHECK_READONLY = 1 << 2, 231 } zfs_ioc_poolcheck_t; 232 233 typedef struct zfs_ioc_vec { 234 zfs_ioc_legacy_func_t *zvec_legacy_func; 235 zfs_ioc_func_t *zvec_func; 236 zfs_secpolicy_func_t *zvec_secpolicy; 237 zfs_ioc_namecheck_t zvec_namecheck; 238 boolean_t zvec_allow_log; 239 zfs_ioc_poolcheck_t zvec_pool_check; 240 boolean_t zvec_smush_outnvlist; 241 const char *zvec_name; 242 } zfs_ioc_vec_t; 243 244 /* This array is indexed by zfs_userquota_prop_t */ 245 static const char *userquota_perms[] = { 246 ZFS_DELEG_PERM_USERUSED, 247 ZFS_DELEG_PERM_USERQUOTA, 248 ZFS_DELEG_PERM_GROUPUSED, 249 ZFS_DELEG_PERM_GROUPQUOTA, 250 }; 251 252 static int zfs_ioc_userspace_upgrade(zfs_cmd_t *zc); 253 static int zfs_check_settable(const char *name, nvpair_t *property, 254 cred_t *cr); 255 static int zfs_check_clearable(char *dataset, nvlist_t *props, 256 nvlist_t **errors); 257 static int zfs_fill_zplprops_root(uint64_t, nvlist_t *, nvlist_t *, 258 boolean_t *); 259 int zfs_set_prop_nvlist(const char *, zprop_source_t, nvlist_t *, nvlist_t *); 260 static int get_nvlist(uint64_t nvl, uint64_t size, int iflag, nvlist_t **nvp); 261 262 static int zfs_prop_activate_feature(spa_t *spa, spa_feature_t feature); 263 264 /* _NOTE(PRINTFLIKE(4)) - this is printf-like, but lint is too whiney */ 265 void 266 __dprintf(const char *file, const char *func, int line, const char *fmt, ...) 267 { 268 const char *newfile; 269 char buf[512]; 270 va_list adx; 271 272 /* 273 * Get rid of annoying "../common/" prefix to filename. 274 */ 275 newfile = strrchr(file, '/'); 276 if (newfile != NULL) { 277 newfile = newfile + 1; /* Get rid of leading / */ 278 } else { 279 newfile = file; 280 } 281 282 va_start(adx, fmt); 283 (void) vsnprintf(buf, sizeof (buf), fmt, adx); 284 va_end(adx); 285 286 /* 287 * To get this data, use the zfs-dprintf probe as so: 288 * dtrace -q -n 'zfs-dprintf \ 289 * /stringof(arg0) == "dbuf.c"/ \ 290 * {printf("%s: %s", stringof(arg1), stringof(arg3))}' 291 * arg0 = file name 292 * arg1 = function name 293 * arg2 = line number 294 * arg3 = message 295 */ 296 DTRACE_PROBE4(zfs__dprintf, 297 char *, newfile, char *, func, int, line, char *, buf); 298 } 299 300 static void 301 history_str_free(char *buf) 302 { 303 kmem_free(buf, HIS_MAX_RECORD_LEN); 304 } 305 306 static char * 307 history_str_get(zfs_cmd_t *zc) 308 { 309 char *buf; 310 311 if (zc->zc_history == 0) 312 return (NULL); 313 314 buf = kmem_alloc(HIS_MAX_RECORD_LEN, KM_SLEEP); 315 if (copyinstr((void *)(uintptr_t)zc->zc_history, 316 buf, HIS_MAX_RECORD_LEN, NULL) != 0) { 317 history_str_free(buf); 318 return (NULL); 319 } 320 321 buf[HIS_MAX_RECORD_LEN -1] = '\0'; 322 323 return (buf); 324 } 325 326 /* 327 * Check to see if the named dataset is currently defined as bootable 328 */ 329 static boolean_t 330 zfs_is_bootfs(const char *name) 331 { 332 objset_t *os; 333 334 if (dmu_objset_hold(name, FTAG, &os) == 0) { 335 boolean_t ret; 336 ret = (dmu_objset_id(os) == spa_bootfs(dmu_objset_spa(os))); 337 dmu_objset_rele(os, FTAG); 338 return (ret); 339 } 340 return (B_FALSE); 341 } 342 343 /* 344 * Return non-zero if the spa version is less than requested version. 345 */ 346 static int 347 zfs_earlier_version(const char *name, int version) 348 { 349 spa_t *spa; 350 351 if (spa_open(name, &spa, FTAG) == 0) { 352 if (spa_version(spa) < version) { 353 spa_close(spa, FTAG); 354 return (1); 355 } 356 spa_close(spa, FTAG); 357 } 358 return (0); 359 } 360 361 /* 362 * Return TRUE if the ZPL version is less than requested version. 363 */ 364 static boolean_t 365 zpl_earlier_version(const char *name, int version) 366 { 367 objset_t *os; 368 boolean_t rc = B_TRUE; 369 370 if (dmu_objset_hold(name, FTAG, &os) == 0) { 371 uint64_t zplversion; 372 373 if (dmu_objset_type(os) != DMU_OST_ZFS) { 374 dmu_objset_rele(os, FTAG); 375 return (B_TRUE); 376 } 377 /* XXX reading from non-owned objset */ 378 if (zfs_get_zplprop(os, ZFS_PROP_VERSION, &zplversion) == 0) 379 rc = zplversion < version; 380 dmu_objset_rele(os, FTAG); 381 } 382 return (rc); 383 } 384 385 static void 386 zfs_log_history(zfs_cmd_t *zc) 387 { 388 spa_t *spa; 389 char *buf; 390 391 if ((buf = history_str_get(zc)) == NULL) 392 return; 393 394 if (spa_open(zc->zc_name, &spa, FTAG) == 0) { 395 if (spa_version(spa) >= SPA_VERSION_ZPOOL_HISTORY) 396 (void) spa_history_log(spa, buf); 397 spa_close(spa, FTAG); 398 } 399 history_str_free(buf); 400 } 401 402 /* 403 * Policy for top-level read operations (list pools). Requires no privileges, 404 * and can be used in the local zone, as there is no associated dataset. 405 */ 406 /* ARGSUSED */ 407 static int 408 zfs_secpolicy_none(zfs_cmd_t *zc, nvlist_t *innvl, cred_t *cr) 409 { 410 return (0); 411 } 412 413 /* 414 * Policy for dataset read operations (list children, get statistics). Requires 415 * no privileges, but must be visible in the local zone. 416 */ 417 /* ARGSUSED */ 418 static int 419 zfs_secpolicy_read(zfs_cmd_t *zc, nvlist_t *innvl, cred_t *cr) 420 { 421 if (INGLOBALZONE(curproc) || 422 zone_dataset_visible(zc->zc_name, NULL)) 423 return (0); 424 425 return (SET_ERROR(ENOENT)); 426 } 427 428 static int 429 zfs_dozonecheck_impl(const char *dataset, uint64_t zoned, cred_t *cr) 430 { 431 int writable = 1; 432 433 /* 434 * The dataset must be visible by this zone -- check this first 435 * so they don't see EPERM on something they shouldn't know about. 436 */ 437 if (!INGLOBALZONE(curproc) && 438 !zone_dataset_visible(dataset, &writable)) 439 return (SET_ERROR(ENOENT)); 440 441 if (INGLOBALZONE(curproc)) { 442 /* 443 * If the fs is zoned, only root can access it from the 444 * global zone. 445 */ 446 if (secpolicy_zfs(cr) && zoned) 447 return (SET_ERROR(EPERM)); 448 } else { 449 /* 450 * If we are in a local zone, the 'zoned' property must be set. 451 */ 452 if (!zoned) 453 return (SET_ERROR(EPERM)); 454 455 /* must be writable by this zone */ 456 if (!writable) 457 return (SET_ERROR(EPERM)); 458 } 459 return (0); 460 } 461 462 static int 463 zfs_dozonecheck(const char *dataset, cred_t *cr) 464 { 465 uint64_t zoned; 466 467 if (dsl_prop_get_integer(dataset, "zoned", &zoned, NULL)) 468 return (SET_ERROR(ENOENT)); 469 470 return (zfs_dozonecheck_impl(dataset, zoned, cr)); 471 } 472 473 static int 474 zfs_dozonecheck_ds(const char *dataset, dsl_dataset_t *ds, cred_t *cr) 475 { 476 uint64_t zoned; 477 478 if (dsl_prop_get_int_ds(ds, "zoned", &zoned)) 479 return (SET_ERROR(ENOENT)); 480 481 return (zfs_dozonecheck_impl(dataset, zoned, cr)); 482 } 483 484 static int 485 zfs_secpolicy_write_perms_ds(const char *name, dsl_dataset_t *ds, 486 const char *perm, cred_t *cr) 487 { 488 int error; 489 490 error = zfs_dozonecheck_ds(name, ds, cr); 491 if (error == 0) { 492 error = secpolicy_zfs(cr); 493 if (error != 0) 494 error = dsl_deleg_access_impl(ds, perm, cr); 495 } 496 return (error); 497 } 498 499 static int 500 zfs_secpolicy_write_perms(const char *name, const char *perm, cred_t *cr) 501 { 502 int error; 503 dsl_dataset_t *ds; 504 dsl_pool_t *dp; 505 506 /* 507 * First do a quick check for root in the global zone, which 508 * is allowed to do all write_perms. This ensures that zfs_ioc_* 509 * will get to handle nonexistent datasets. 510 */ 511 if (INGLOBALZONE(curproc) && secpolicy_zfs(cr) == 0) 512 return (0); 513 514 error = dsl_pool_hold(name, FTAG, &dp); 515 if (error != 0) 516 return (error); 517 518 error = dsl_dataset_hold(dp, name, FTAG, &ds); 519 if (error != 0) { 520 dsl_pool_rele(dp, FTAG); 521 return (error); 522 } 523 524 error = zfs_secpolicy_write_perms_ds(name, ds, perm, cr); 525 526 dsl_dataset_rele(ds, FTAG); 527 dsl_pool_rele(dp, FTAG); 528 return (error); 529 } 530 531 /* 532 * Policy for setting the security label property. 533 * 534 * Returns 0 for success, non-zero for access and other errors. 535 */ 536 static int 537 zfs_set_slabel_policy(const char *name, char *strval, cred_t *cr) 538 { 539 char ds_hexsl[MAXNAMELEN]; 540 bslabel_t ds_sl, new_sl; 541 boolean_t new_default = FALSE; 542 uint64_t zoned; 543 int needed_priv = -1; 544 int error; 545 546 /* First get the existing dataset label. */ 547 error = dsl_prop_get(name, zfs_prop_to_name(ZFS_PROP_MLSLABEL), 548 1, sizeof (ds_hexsl), &ds_hexsl, NULL); 549 if (error != 0) 550 return (SET_ERROR(EPERM)); 551 552 if (strcasecmp(strval, ZFS_MLSLABEL_DEFAULT) == 0) 553 new_default = TRUE; 554 555 /* The label must be translatable */ 556 if (!new_default && (hexstr_to_label(strval, &new_sl) != 0)) 557 return (SET_ERROR(EINVAL)); 558 559 /* 560 * In a non-global zone, disallow attempts to set a label that 561 * doesn't match that of the zone; otherwise no other checks 562 * are needed. 563 */ 564 if (!INGLOBALZONE(curproc)) { 565 if (new_default || !blequal(&new_sl, CR_SL(CRED()))) 566 return (SET_ERROR(EPERM)); 567 return (0); 568 } 569 570 /* 571 * For global-zone datasets (i.e., those whose zoned property is 572 * "off", verify that the specified new label is valid for the 573 * global zone. 574 */ 575 if (dsl_prop_get_integer(name, 576 zfs_prop_to_name(ZFS_PROP_ZONED), &zoned, NULL)) 577 return (SET_ERROR(EPERM)); 578 if (!zoned) { 579 if (zfs_check_global_label(name, strval) != 0) 580 return (SET_ERROR(EPERM)); 581 } 582 583 /* 584 * If the existing dataset label is nondefault, check if the 585 * dataset is mounted (label cannot be changed while mounted). 586 * Get the zfsvfs; if there isn't one, then the dataset isn't 587 * mounted (or isn't a dataset, doesn't exist, ...). 588 */ 589 if (strcasecmp(ds_hexsl, ZFS_MLSLABEL_DEFAULT) != 0) { 590 objset_t *os; 591 static char *setsl_tag = "setsl_tag"; 592 593 /* 594 * Try to own the dataset; abort if there is any error, 595 * (e.g., already mounted, in use, or other error). 596 */ 597 error = dmu_objset_own(name, DMU_OST_ZFS, B_TRUE, B_TRUE, 598 setsl_tag, &os); 599 if (error != 0) 600 return (SET_ERROR(EPERM)); 601 602 dmu_objset_disown(os, B_TRUE, setsl_tag); 603 604 if (new_default) { 605 needed_priv = PRIV_FILE_DOWNGRADE_SL; 606 goto out_check; 607 } 608 609 if (hexstr_to_label(strval, &new_sl) != 0) 610 return (SET_ERROR(EPERM)); 611 612 if (blstrictdom(&ds_sl, &new_sl)) 613 needed_priv = PRIV_FILE_DOWNGRADE_SL; 614 else if (blstrictdom(&new_sl, &ds_sl)) 615 needed_priv = PRIV_FILE_UPGRADE_SL; 616 } else { 617 /* dataset currently has a default label */ 618 if (!new_default) 619 needed_priv = PRIV_FILE_UPGRADE_SL; 620 } 621 622 out_check: 623 if (needed_priv != -1) 624 return (PRIV_POLICY(cr, needed_priv, B_FALSE, EPERM, NULL)); 625 return (0); 626 } 627 628 static int 629 zfs_secpolicy_setprop(const char *dsname, zfs_prop_t prop, nvpair_t *propval, 630 cred_t *cr) 631 { 632 char *strval; 633 634 /* 635 * Check permissions for special properties. 636 */ 637 switch (prop) { 638 case ZFS_PROP_ZONED: 639 /* 640 * Disallow setting of 'zoned' from within a local zone. 641 */ 642 if (!INGLOBALZONE(curproc)) 643 return (SET_ERROR(EPERM)); 644 break; 645 646 case ZFS_PROP_QUOTA: 647 case ZFS_PROP_FILESYSTEM_LIMIT: 648 case ZFS_PROP_SNAPSHOT_LIMIT: 649 if (!INGLOBALZONE(curproc)) { 650 uint64_t zoned; 651 char setpoint[ZFS_MAX_DATASET_NAME_LEN]; 652 /* 653 * Unprivileged users are allowed to modify the 654 * limit on things *under* (ie. contained by) 655 * the thing they own. 656 */ 657 if (dsl_prop_get_integer(dsname, "zoned", &zoned, 658 setpoint)) 659 return (SET_ERROR(EPERM)); 660 if (!zoned || strlen(dsname) <= strlen(setpoint)) 661 return (SET_ERROR(EPERM)); 662 } 663 break; 664 665 case ZFS_PROP_MLSLABEL: 666 if (!is_system_labeled()) 667 return (SET_ERROR(EPERM)); 668 669 if (nvpair_value_string(propval, &strval) == 0) { 670 int err; 671 672 err = zfs_set_slabel_policy(dsname, strval, CRED()); 673 if (err != 0) 674 return (err); 675 } 676 break; 677 } 678 679 return (zfs_secpolicy_write_perms(dsname, zfs_prop_to_name(prop), cr)); 680 } 681 682 /* ARGSUSED */ 683 static int 684 zfs_secpolicy_set_fsacl(zfs_cmd_t *zc, nvlist_t *innvl, cred_t *cr) 685 { 686 int error; 687 688 error = zfs_dozonecheck(zc->zc_name, cr); 689 if (error != 0) 690 return (error); 691 692 /* 693 * permission to set permissions will be evaluated later in 694 * dsl_deleg_can_allow() 695 */ 696 return (0); 697 } 698 699 /* ARGSUSED */ 700 static int 701 zfs_secpolicy_rollback(zfs_cmd_t *zc, nvlist_t *innvl, cred_t *cr) 702 { 703 return (zfs_secpolicy_write_perms(zc->zc_name, 704 ZFS_DELEG_PERM_ROLLBACK, cr)); 705 } 706 707 /* ARGSUSED */ 708 static int 709 zfs_secpolicy_send(zfs_cmd_t *zc, nvlist_t *innvl, cred_t *cr) 710 { 711 dsl_pool_t *dp; 712 dsl_dataset_t *ds; 713 char *cp; 714 int error; 715 716 /* 717 * Generate the current snapshot name from the given objsetid, then 718 * use that name for the secpolicy/zone checks. 719 */ 720 cp = strchr(zc->zc_name, '@'); 721 if (cp == NULL) 722 return (SET_ERROR(EINVAL)); 723 error = dsl_pool_hold(zc->zc_name, FTAG, &dp); 724 if (error != 0) 725 return (error); 726 727 error = dsl_dataset_hold_obj(dp, zc->zc_sendobj, FTAG, &ds); 728 if (error != 0) { 729 dsl_pool_rele(dp, FTAG); 730 return (error); 731 } 732 733 dsl_dataset_name(ds, zc->zc_name); 734 735 error = zfs_secpolicy_write_perms_ds(zc->zc_name, ds, 736 ZFS_DELEG_PERM_SEND, cr); 737 dsl_dataset_rele(ds, FTAG); 738 dsl_pool_rele(dp, FTAG); 739 740 return (error); 741 } 742 743 /* ARGSUSED */ 744 static int 745 zfs_secpolicy_send_new(zfs_cmd_t *zc, nvlist_t *innvl, cred_t *cr) 746 { 747 return (zfs_secpolicy_write_perms(zc->zc_name, 748 ZFS_DELEG_PERM_SEND, cr)); 749 } 750 751 /* ARGSUSED */ 752 static int 753 zfs_secpolicy_deleg_share(zfs_cmd_t *zc, nvlist_t *innvl, cred_t *cr) 754 { 755 vnode_t *vp; 756 int error; 757 758 if ((error = lookupname(zc->zc_value, UIO_SYSSPACE, 759 NO_FOLLOW, NULL, &vp)) != 0) 760 return (error); 761 762 /* Now make sure mntpnt and dataset are ZFS */ 763 764 if (vp->v_vfsp->vfs_fstype != zfsfstype || 765 (strcmp((char *)refstr_value(vp->v_vfsp->vfs_resource), 766 zc->zc_name) != 0)) { 767 VN_RELE(vp); 768 return (SET_ERROR(EPERM)); 769 } 770 771 VN_RELE(vp); 772 return (dsl_deleg_access(zc->zc_name, 773 ZFS_DELEG_PERM_SHARE, cr)); 774 } 775 776 int 777 zfs_secpolicy_share(zfs_cmd_t *zc, nvlist_t *innvl, cred_t *cr) 778 { 779 if (!INGLOBALZONE(curproc)) 780 return (SET_ERROR(EPERM)); 781 782 if (secpolicy_nfs(cr) == 0) { 783 return (0); 784 } else { 785 return (zfs_secpolicy_deleg_share(zc, innvl, cr)); 786 } 787 } 788 789 int 790 zfs_secpolicy_smb_acl(zfs_cmd_t *zc, nvlist_t *innvl, cred_t *cr) 791 { 792 if (!INGLOBALZONE(curproc)) 793 return (SET_ERROR(EPERM)); 794 795 if (secpolicy_smb(cr) == 0) { 796 return (0); 797 } else { 798 return (zfs_secpolicy_deleg_share(zc, innvl, cr)); 799 } 800 } 801 802 static int 803 zfs_get_parent(const char *datasetname, char *parent, int parentsize) 804 { 805 char *cp; 806 807 /* 808 * Remove the @bla or /bla from the end of the name to get the parent. 809 */ 810 (void) strncpy(parent, datasetname, parentsize); 811 cp = strrchr(parent, '@'); 812 if (cp != NULL) { 813 cp[0] = '\0'; 814 } else { 815 cp = strrchr(parent, '/'); 816 if (cp == NULL) 817 return (SET_ERROR(ENOENT)); 818 cp[0] = '\0'; 819 } 820 821 return (0); 822 } 823 824 int 825 zfs_secpolicy_destroy_perms(const char *name, cred_t *cr) 826 { 827 int error; 828 829 if ((error = zfs_secpolicy_write_perms(name, 830 ZFS_DELEG_PERM_MOUNT, cr)) != 0) 831 return (error); 832 833 return (zfs_secpolicy_write_perms(name, ZFS_DELEG_PERM_DESTROY, cr)); 834 } 835 836 /* ARGSUSED */ 837 static int 838 zfs_secpolicy_destroy(zfs_cmd_t *zc, nvlist_t *innvl, cred_t *cr) 839 { 840 return (zfs_secpolicy_destroy_perms(zc->zc_name, cr)); 841 } 842 843 /* 844 * Destroying snapshots with delegated permissions requires 845 * descendant mount and destroy permissions. 846 */ 847 /* ARGSUSED */ 848 static int 849 zfs_secpolicy_destroy_snaps(zfs_cmd_t *zc, nvlist_t *innvl, cred_t *cr) 850 { 851 nvlist_t *snaps; 852 nvpair_t *pair, *nextpair; 853 int error = 0; 854 855 if (nvlist_lookup_nvlist(innvl, "snaps", &snaps) != 0) 856 return (SET_ERROR(EINVAL)); 857 for (pair = nvlist_next_nvpair(snaps, NULL); pair != NULL; 858 pair = nextpair) { 859 nextpair = nvlist_next_nvpair(snaps, pair); 860 error = zfs_secpolicy_destroy_perms(nvpair_name(pair), cr); 861 if (error == ENOENT) { 862 /* 863 * Ignore any snapshots that don't exist (we consider 864 * them "already destroyed"). Remove the name from the 865 * nvl here in case the snapshot is created between 866 * now and when we try to destroy it (in which case 867 * we don't want to destroy it since we haven't 868 * checked for permission). 869 */ 870 fnvlist_remove_nvpair(snaps, pair); 871 error = 0; 872 } 873 if (error != 0) 874 break; 875 } 876 877 return (error); 878 } 879 880 int 881 zfs_secpolicy_rename_perms(const char *from, const char *to, cred_t *cr) 882 { 883 char parentname[ZFS_MAX_DATASET_NAME_LEN]; 884 int error; 885 886 if ((error = zfs_secpolicy_write_perms(from, 887 ZFS_DELEG_PERM_RENAME, cr)) != 0) 888 return (error); 889 890 if ((error = zfs_secpolicy_write_perms(from, 891 ZFS_DELEG_PERM_MOUNT, cr)) != 0) 892 return (error); 893 894 if ((error = zfs_get_parent(to, parentname, 895 sizeof (parentname))) != 0) 896 return (error); 897 898 if ((error = zfs_secpolicy_write_perms(parentname, 899 ZFS_DELEG_PERM_CREATE, cr)) != 0) 900 return (error); 901 902 if ((error = zfs_secpolicy_write_perms(parentname, 903 ZFS_DELEG_PERM_MOUNT, cr)) != 0) 904 return (error); 905 906 return (error); 907 } 908 909 /* ARGSUSED */ 910 static int 911 zfs_secpolicy_rename(zfs_cmd_t *zc, nvlist_t *innvl, cred_t *cr) 912 { 913 return (zfs_secpolicy_rename_perms(zc->zc_name, zc->zc_value, cr)); 914 } 915 916 /* ARGSUSED */ 917 static int 918 zfs_secpolicy_promote(zfs_cmd_t *zc, nvlist_t *innvl, cred_t *cr) 919 { 920 dsl_pool_t *dp; 921 dsl_dataset_t *clone; 922 int error; 923 924 error = zfs_secpolicy_write_perms(zc->zc_name, 925 ZFS_DELEG_PERM_PROMOTE, cr); 926 if (error != 0) 927 return (error); 928 929 error = dsl_pool_hold(zc->zc_name, FTAG, &dp); 930 if (error != 0) 931 return (error); 932 933 error = dsl_dataset_hold(dp, zc->zc_name, FTAG, &clone); 934 935 if (error == 0) { 936 char parentname[ZFS_MAX_DATASET_NAME_LEN]; 937 dsl_dataset_t *origin = NULL; 938 dsl_dir_t *dd; 939 dd = clone->ds_dir; 940 941 error = dsl_dataset_hold_obj(dd->dd_pool, 942 dsl_dir_phys(dd)->dd_origin_obj, FTAG, &origin); 943 if (error != 0) { 944 dsl_dataset_rele(clone, FTAG); 945 dsl_pool_rele(dp, FTAG); 946 return (error); 947 } 948 949 error = zfs_secpolicy_write_perms_ds(zc->zc_name, clone, 950 ZFS_DELEG_PERM_MOUNT, cr); 951 952 dsl_dataset_name(origin, parentname); 953 if (error == 0) { 954 error = zfs_secpolicy_write_perms_ds(parentname, origin, 955 ZFS_DELEG_PERM_PROMOTE, cr); 956 } 957 dsl_dataset_rele(clone, FTAG); 958 dsl_dataset_rele(origin, FTAG); 959 } 960 dsl_pool_rele(dp, FTAG); 961 return (error); 962 } 963 964 /* ARGSUSED */ 965 static int 966 zfs_secpolicy_recv(zfs_cmd_t *zc, nvlist_t *innvl, cred_t *cr) 967 { 968 int error; 969 970 if ((error = zfs_secpolicy_write_perms(zc->zc_name, 971 ZFS_DELEG_PERM_RECEIVE, cr)) != 0) 972 return (error); 973 974 if ((error = zfs_secpolicy_write_perms(zc->zc_name, 975 ZFS_DELEG_PERM_MOUNT, cr)) != 0) 976 return (error); 977 978 return (zfs_secpolicy_write_perms(zc->zc_name, 979 ZFS_DELEG_PERM_CREATE, cr)); 980 } 981 982 int 983 zfs_secpolicy_snapshot_perms(const char *name, cred_t *cr) 984 { 985 return (zfs_secpolicy_write_perms(name, 986 ZFS_DELEG_PERM_SNAPSHOT, cr)); 987 } 988 989 /* 990 * Check for permission to create each snapshot in the nvlist. 991 */ 992 /* ARGSUSED */ 993 static int 994 zfs_secpolicy_snapshot(zfs_cmd_t *zc, nvlist_t *innvl, cred_t *cr) 995 { 996 nvlist_t *snaps; 997 int error = 0; 998 nvpair_t *pair; 999 1000 if (nvlist_lookup_nvlist(innvl, "snaps", &snaps) != 0) 1001 return (SET_ERROR(EINVAL)); 1002 for (pair = nvlist_next_nvpair(snaps, NULL); pair != NULL; 1003 pair = nvlist_next_nvpair(snaps, pair)) { 1004 char *name = nvpair_name(pair); 1005 char *atp = strchr(name, '@'); 1006 1007 if (atp == NULL) { 1008 error = SET_ERROR(EINVAL); 1009 break; 1010 } 1011 *atp = '\0'; 1012 error = zfs_secpolicy_snapshot_perms(name, cr); 1013 *atp = '@'; 1014 if (error != 0) 1015 break; 1016 } 1017 return (error); 1018 } 1019 1020 /* 1021 * Check for permission to create each snapshot in the nvlist. 1022 */ 1023 /* ARGSUSED */ 1024 static int 1025 zfs_secpolicy_bookmark(zfs_cmd_t *zc, nvlist_t *innvl, cred_t *cr) 1026 { 1027 int error = 0; 1028 1029 for (nvpair_t *pair = nvlist_next_nvpair(innvl, NULL); 1030 pair != NULL; pair = nvlist_next_nvpair(innvl, pair)) { 1031 char *name = nvpair_name(pair); 1032 char *hashp = strchr(name, '#'); 1033 1034 if (hashp == NULL) { 1035 error = SET_ERROR(EINVAL); 1036 break; 1037 } 1038 *hashp = '\0'; 1039 error = zfs_secpolicy_write_perms(name, 1040 ZFS_DELEG_PERM_BOOKMARK, cr); 1041 *hashp = '#'; 1042 if (error != 0) 1043 break; 1044 } 1045 return (error); 1046 } 1047 1048 /* ARGSUSED */ 1049 static int 1050 zfs_secpolicy_remap(zfs_cmd_t *zc, nvlist_t *innvl, cred_t *cr) 1051 { 1052 return (zfs_secpolicy_write_perms(zc->zc_name, 1053 ZFS_DELEG_PERM_REMAP, cr)); 1054 } 1055 1056 /* ARGSUSED */ 1057 static int 1058 zfs_secpolicy_destroy_bookmarks(zfs_cmd_t *zc, nvlist_t *innvl, cred_t *cr) 1059 { 1060 nvpair_t *pair, *nextpair; 1061 int error = 0; 1062 1063 for (pair = nvlist_next_nvpair(innvl, NULL); pair != NULL; 1064 pair = nextpair) { 1065 char *name = nvpair_name(pair); 1066 char *hashp = strchr(name, '#'); 1067 nextpair = nvlist_next_nvpair(innvl, pair); 1068 1069 if (hashp == NULL) { 1070 error = SET_ERROR(EINVAL); 1071 break; 1072 } 1073 1074 *hashp = '\0'; 1075 error = zfs_secpolicy_write_perms(name, 1076 ZFS_DELEG_PERM_DESTROY, cr); 1077 *hashp = '#'; 1078 if (error == ENOENT) { 1079 /* 1080 * Ignore any filesystems that don't exist (we consider 1081 * their bookmarks "already destroyed"). Remove 1082 * the name from the nvl here in case the filesystem 1083 * is created between now and when we try to destroy 1084 * the bookmark (in which case we don't want to 1085 * destroy it since we haven't checked for permission). 1086 */ 1087 fnvlist_remove_nvpair(innvl, pair); 1088 error = 0; 1089 } 1090 if (error != 0) 1091 break; 1092 } 1093 1094 return (error); 1095 } 1096 1097 /* ARGSUSED */ 1098 static int 1099 zfs_secpolicy_log_history(zfs_cmd_t *zc, nvlist_t *innvl, cred_t *cr) 1100 { 1101 /* 1102 * Even root must have a proper TSD so that we know what pool 1103 * to log to. 1104 */ 1105 if (tsd_get(zfs_allow_log_key) == NULL) 1106 return (SET_ERROR(EPERM)); 1107 return (0); 1108 } 1109 1110 static int 1111 zfs_secpolicy_create_clone(zfs_cmd_t *zc, nvlist_t *innvl, cred_t *cr) 1112 { 1113 char parentname[ZFS_MAX_DATASET_NAME_LEN]; 1114 int error; 1115 char *origin; 1116 1117 if ((error = zfs_get_parent(zc->zc_name, parentname, 1118 sizeof (parentname))) != 0) 1119 return (error); 1120 1121 if (nvlist_lookup_string(innvl, "origin", &origin) == 0 && 1122 (error = zfs_secpolicy_write_perms(origin, 1123 ZFS_DELEG_PERM_CLONE, cr)) != 0) 1124 return (error); 1125 1126 if ((error = zfs_secpolicy_write_perms(parentname, 1127 ZFS_DELEG_PERM_CREATE, cr)) != 0) 1128 return (error); 1129 1130 return (zfs_secpolicy_write_perms(parentname, 1131 ZFS_DELEG_PERM_MOUNT, cr)); 1132 } 1133 1134 /* 1135 * Policy for pool operations - create/destroy pools, add vdevs, etc. Requires 1136 * SYS_CONFIG privilege, which is not available in a local zone. 1137 */ 1138 /* ARGSUSED */ 1139 static int 1140 zfs_secpolicy_config(zfs_cmd_t *zc, nvlist_t *innvl, cred_t *cr) 1141 { 1142 if (secpolicy_sys_config(cr, B_FALSE) != 0) 1143 return (SET_ERROR(EPERM)); 1144 1145 return (0); 1146 } 1147 1148 /* 1149 * Policy for object to name lookups. 1150 */ 1151 /* ARGSUSED */ 1152 static int 1153 zfs_secpolicy_diff(zfs_cmd_t *zc, nvlist_t *innvl, cred_t *cr) 1154 { 1155 int error; 1156 1157 if ((error = secpolicy_sys_config(cr, B_FALSE)) == 0) 1158 return (0); 1159 1160 error = zfs_secpolicy_write_perms(zc->zc_name, ZFS_DELEG_PERM_DIFF, cr); 1161 return (error); 1162 } 1163 1164 /* 1165 * Policy for fault injection. Requires all privileges. 1166 */ 1167 /* ARGSUSED */ 1168 static int 1169 zfs_secpolicy_inject(zfs_cmd_t *zc, nvlist_t *innvl, cred_t *cr) 1170 { 1171 return (secpolicy_zinject(cr)); 1172 } 1173 1174 /* ARGSUSED */ 1175 static int 1176 zfs_secpolicy_inherit_prop(zfs_cmd_t *zc, nvlist_t *innvl, cred_t *cr) 1177 { 1178 zfs_prop_t prop = zfs_name_to_prop(zc->zc_value); 1179 1180 if (prop == ZPROP_INVAL) { 1181 if (!zfs_prop_user(zc->zc_value)) 1182 return (SET_ERROR(EINVAL)); 1183 return (zfs_secpolicy_write_perms(zc->zc_name, 1184 ZFS_DELEG_PERM_USERPROP, cr)); 1185 } else { 1186 return (zfs_secpolicy_setprop(zc->zc_name, prop, 1187 NULL, cr)); 1188 } 1189 } 1190 1191 static int 1192 zfs_secpolicy_userspace_one(zfs_cmd_t *zc, nvlist_t *innvl, cred_t *cr) 1193 { 1194 int err = zfs_secpolicy_read(zc, innvl, cr); 1195 if (err) 1196 return (err); 1197 1198 if (zc->zc_objset_type >= ZFS_NUM_USERQUOTA_PROPS) 1199 return (SET_ERROR(EINVAL)); 1200 1201 if (zc->zc_value[0] == 0) { 1202 /* 1203 * They are asking about a posix uid/gid. If it's 1204 * themself, allow it. 1205 */ 1206 if (zc->zc_objset_type == ZFS_PROP_USERUSED || 1207 zc->zc_objset_type == ZFS_PROP_USERQUOTA) { 1208 if (zc->zc_guid == crgetuid(cr)) 1209 return (0); 1210 } else { 1211 if (groupmember(zc->zc_guid, cr)) 1212 return (0); 1213 } 1214 } 1215 1216 return (zfs_secpolicy_write_perms(zc->zc_name, 1217 userquota_perms[zc->zc_objset_type], cr)); 1218 } 1219 1220 static int 1221 zfs_secpolicy_userspace_many(zfs_cmd_t *zc, nvlist_t *innvl, cred_t *cr) 1222 { 1223 int err = zfs_secpolicy_read(zc, innvl, cr); 1224 if (err) 1225 return (err); 1226 1227 if (zc->zc_objset_type >= ZFS_NUM_USERQUOTA_PROPS) 1228 return (SET_ERROR(EINVAL)); 1229 1230 return (zfs_secpolicy_write_perms(zc->zc_name, 1231 userquota_perms[zc->zc_objset_type], cr)); 1232 } 1233 1234 /* ARGSUSED */ 1235 static int 1236 zfs_secpolicy_userspace_upgrade(zfs_cmd_t *zc, nvlist_t *innvl, cred_t *cr) 1237 { 1238 return (zfs_secpolicy_setprop(zc->zc_name, ZFS_PROP_VERSION, 1239 NULL, cr)); 1240 } 1241 1242 /* ARGSUSED */ 1243 static int 1244 zfs_secpolicy_hold(zfs_cmd_t *zc, nvlist_t *innvl, cred_t *cr) 1245 { 1246 nvpair_t *pair; 1247 nvlist_t *holds; 1248 int error; 1249 1250 error = nvlist_lookup_nvlist(innvl, "holds", &holds); 1251 if (error != 0) 1252 return (SET_ERROR(EINVAL)); 1253 1254 for (pair = nvlist_next_nvpair(holds, NULL); pair != NULL; 1255 pair = nvlist_next_nvpair(holds, pair)) { 1256 char fsname[ZFS_MAX_DATASET_NAME_LEN]; 1257 error = dmu_fsname(nvpair_name(pair), fsname); 1258 if (error != 0) 1259 return (error); 1260 error = zfs_secpolicy_write_perms(fsname, 1261 ZFS_DELEG_PERM_HOLD, cr); 1262 if (error != 0) 1263 return (error); 1264 } 1265 return (0); 1266 } 1267 1268 /* ARGSUSED */ 1269 static int 1270 zfs_secpolicy_release(zfs_cmd_t *zc, nvlist_t *innvl, cred_t *cr) 1271 { 1272 nvpair_t *pair; 1273 int error; 1274 1275 for (pair = nvlist_next_nvpair(innvl, NULL); pair != NULL; 1276 pair = nvlist_next_nvpair(innvl, pair)) { 1277 char fsname[ZFS_MAX_DATASET_NAME_LEN]; 1278 error = dmu_fsname(nvpair_name(pair), fsname); 1279 if (error != 0) 1280 return (error); 1281 error = zfs_secpolicy_write_perms(fsname, 1282 ZFS_DELEG_PERM_RELEASE, cr); 1283 if (error != 0) 1284 return (error); 1285 } 1286 return (0); 1287 } 1288 1289 /* ARGSUSED */ 1290 static int 1291 zfs_secpolicy_load_key(zfs_cmd_t *zc, nvlist_t *innvl, cred_t *cr) 1292 { 1293 return (zfs_secpolicy_write_perms(zc->zc_name, 1294 ZFS_DELEG_PERM_LOAD_KEY, cr)); 1295 } 1296 1297 /* ARGSUSED */ 1298 static int 1299 zfs_secpolicy_change_key(zfs_cmd_t *zc, nvlist_t *innvl, cred_t *cr) 1300 { 1301 return (zfs_secpolicy_write_perms(zc->zc_name, 1302 ZFS_DELEG_PERM_CHANGE_KEY, cr)); 1303 } 1304 1305 /* 1306 * Policy for allowing temporary snapshots to be taken or released 1307 */ 1308 static int 1309 zfs_secpolicy_tmp_snapshot(zfs_cmd_t *zc, nvlist_t *innvl, cred_t *cr) 1310 { 1311 /* 1312 * A temporary snapshot is the same as a snapshot, 1313 * hold, destroy and release all rolled into one. 1314 * Delegated diff alone is sufficient that we allow this. 1315 */ 1316 int error; 1317 1318 if ((error = zfs_secpolicy_write_perms(zc->zc_name, 1319 ZFS_DELEG_PERM_DIFF, cr)) == 0) 1320 return (0); 1321 1322 error = zfs_secpolicy_snapshot_perms(zc->zc_name, cr); 1323 if (error == 0) 1324 error = zfs_secpolicy_hold(zc, innvl, cr); 1325 if (error == 0) 1326 error = zfs_secpolicy_release(zc, innvl, cr); 1327 if (error == 0) 1328 error = zfs_secpolicy_destroy(zc, innvl, cr); 1329 return (error); 1330 } 1331 1332 /* 1333 * Returns the nvlist as specified by the user in the zfs_cmd_t. 1334 */ 1335 static int 1336 get_nvlist(uint64_t nvl, uint64_t size, int iflag, nvlist_t **nvp) 1337 { 1338 char *packed; 1339 int error; 1340 nvlist_t *list = NULL; 1341 1342 /* 1343 * Read in and unpack the user-supplied nvlist. 1344 */ 1345 if (size == 0) 1346 return (SET_ERROR(EINVAL)); 1347 1348 packed = kmem_alloc(size, KM_SLEEP); 1349 1350 if ((error = ddi_copyin((void *)(uintptr_t)nvl, packed, size, 1351 iflag)) != 0) { 1352 kmem_free(packed, size); 1353 return (SET_ERROR(EFAULT)); 1354 } 1355 1356 if ((error = nvlist_unpack(packed, size, &list, 0)) != 0) { 1357 kmem_free(packed, size); 1358 return (error); 1359 } 1360 1361 kmem_free(packed, size); 1362 1363 *nvp = list; 1364 return (0); 1365 } 1366 1367 /* 1368 * Reduce the size of this nvlist until it can be serialized in 'max' bytes. 1369 * Entries will be removed from the end of the nvlist, and one int32 entry 1370 * named "N_MORE_ERRORS" will be added indicating how many entries were 1371 * removed. 1372 */ 1373 static int 1374 nvlist_smush(nvlist_t *errors, size_t max) 1375 { 1376 size_t size; 1377 1378 size = fnvlist_size(errors); 1379 1380 if (size > max) { 1381 nvpair_t *more_errors; 1382 int n = 0; 1383 1384 if (max < 1024) 1385 return (SET_ERROR(ENOMEM)); 1386 1387 fnvlist_add_int32(errors, ZPROP_N_MORE_ERRORS, 0); 1388 more_errors = nvlist_prev_nvpair(errors, NULL); 1389 1390 do { 1391 nvpair_t *pair = nvlist_prev_nvpair(errors, 1392 more_errors); 1393 fnvlist_remove_nvpair(errors, pair); 1394 n++; 1395 size = fnvlist_size(errors); 1396 } while (size > max); 1397 1398 fnvlist_remove_nvpair(errors, more_errors); 1399 fnvlist_add_int32(errors, ZPROP_N_MORE_ERRORS, n); 1400 ASSERT3U(fnvlist_size(errors), <=, max); 1401 } 1402 1403 return (0); 1404 } 1405 1406 static int 1407 put_nvlist(zfs_cmd_t *zc, nvlist_t *nvl) 1408 { 1409 char *packed = NULL; 1410 int error = 0; 1411 size_t size; 1412 1413 size = fnvlist_size(nvl); 1414 1415 if (size > zc->zc_nvlist_dst_size) { 1416 error = SET_ERROR(ENOMEM); 1417 } else { 1418 packed = fnvlist_pack(nvl, &size); 1419 if (ddi_copyout(packed, (void *)(uintptr_t)zc->zc_nvlist_dst, 1420 size, zc->zc_iflags) != 0) 1421 error = SET_ERROR(EFAULT); 1422 fnvlist_pack_free(packed, size); 1423 } 1424 1425 zc->zc_nvlist_dst_size = size; 1426 zc->zc_nvlist_dst_filled = B_TRUE; 1427 return (error); 1428 } 1429 1430 int 1431 getzfsvfs_impl(objset_t *os, zfsvfs_t **zfvp) 1432 { 1433 int error = 0; 1434 if (dmu_objset_type(os) != DMU_OST_ZFS) { 1435 return (SET_ERROR(EINVAL)); 1436 } 1437 1438 mutex_enter(&os->os_user_ptr_lock); 1439 *zfvp = dmu_objset_get_user(os); 1440 if (*zfvp) { 1441 VFS_HOLD((*zfvp)->z_vfs); 1442 } else { 1443 error = SET_ERROR(ESRCH); 1444 } 1445 mutex_exit(&os->os_user_ptr_lock); 1446 return (error); 1447 } 1448 1449 int 1450 getzfsvfs(const char *dsname, zfsvfs_t **zfvp) 1451 { 1452 objset_t *os; 1453 int error; 1454 1455 error = dmu_objset_hold(dsname, FTAG, &os); 1456 if (error != 0) 1457 return (error); 1458 1459 error = getzfsvfs_impl(os, zfvp); 1460 dmu_objset_rele(os, FTAG); 1461 return (error); 1462 } 1463 1464 /* 1465 * Find a zfsvfs_t for a mounted filesystem, or create our own, in which 1466 * case its z_vfs will be NULL, and it will be opened as the owner. 1467 * If 'writer' is set, the z_teardown_lock will be held for RW_WRITER, 1468 * which prevents all vnode ops from running. 1469 */ 1470 static int 1471 zfsvfs_hold(const char *name, void *tag, zfsvfs_t **zfvp, boolean_t writer) 1472 { 1473 int error = 0; 1474 1475 if (getzfsvfs(name, zfvp) != 0) 1476 error = zfsvfs_create(name, zfvp); 1477 if (error == 0) { 1478 rrm_enter(&(*zfvp)->z_teardown_lock, (writer) ? RW_WRITER : 1479 RW_READER, tag); 1480 if ((*zfvp)->z_unmounted) { 1481 /* 1482 * XXX we could probably try again, since the unmounting 1483 * thread should be just about to disassociate the 1484 * objset from the zfsvfs. 1485 */ 1486 rrm_exit(&(*zfvp)->z_teardown_lock, tag); 1487 return (SET_ERROR(EBUSY)); 1488 } 1489 } 1490 return (error); 1491 } 1492 1493 static void 1494 zfsvfs_rele(zfsvfs_t *zfsvfs, void *tag) 1495 { 1496 rrm_exit(&zfsvfs->z_teardown_lock, tag); 1497 1498 if (zfsvfs->z_vfs) { 1499 VFS_RELE(zfsvfs->z_vfs); 1500 } else { 1501 dmu_objset_disown(zfsvfs->z_os, B_TRUE, zfsvfs); 1502 zfsvfs_free(zfsvfs); 1503 } 1504 } 1505 1506 static int 1507 zfs_ioc_pool_create(zfs_cmd_t *zc) 1508 { 1509 int error; 1510 nvlist_t *config, *props = NULL; 1511 nvlist_t *rootprops = NULL; 1512 nvlist_t *zplprops = NULL; 1513 char *spa_name = zc->zc_name; 1514 dsl_crypto_params_t *dcp = NULL; 1515 1516 if (error = get_nvlist(zc->zc_nvlist_conf, zc->zc_nvlist_conf_size, 1517 zc->zc_iflags, &config)) 1518 return (error); 1519 1520 if (zc->zc_nvlist_src_size != 0 && (error = 1521 get_nvlist(zc->zc_nvlist_src, zc->zc_nvlist_src_size, 1522 zc->zc_iflags, &props))) { 1523 nvlist_free(config); 1524 return (error); 1525 } 1526 1527 if (props) { 1528 nvlist_t *nvl = NULL; 1529 nvlist_t *hidden_args = NULL; 1530 uint64_t version = SPA_VERSION; 1531 char *tname; 1532 1533 (void) nvlist_lookup_uint64(props, 1534 zpool_prop_to_name(ZPOOL_PROP_VERSION), &version); 1535 if (!SPA_VERSION_IS_SUPPORTED(version)) { 1536 error = SET_ERROR(EINVAL); 1537 goto pool_props_bad; 1538 } 1539 (void) nvlist_lookup_nvlist(props, ZPOOL_ROOTFS_PROPS, &nvl); 1540 if (nvl) { 1541 error = nvlist_dup(nvl, &rootprops, KM_SLEEP); 1542 if (error != 0) { 1543 nvlist_free(config); 1544 nvlist_free(props); 1545 return (error); 1546 } 1547 (void) nvlist_remove_all(props, ZPOOL_ROOTFS_PROPS); 1548 } 1549 1550 (void) nvlist_lookup_nvlist(props, ZPOOL_HIDDEN_ARGS, 1551 &hidden_args); 1552 error = dsl_crypto_params_create_nvlist(DCP_CMD_NONE, 1553 rootprops, hidden_args, &dcp); 1554 if (error != 0) { 1555 nvlist_free(config); 1556 nvlist_free(props); 1557 return (error); 1558 } 1559 (void) nvlist_remove_all(props, ZPOOL_HIDDEN_ARGS); 1560 1561 VERIFY(nvlist_alloc(&zplprops, NV_UNIQUE_NAME, KM_SLEEP) == 0); 1562 error = zfs_fill_zplprops_root(version, rootprops, 1563 zplprops, NULL); 1564 if (error != 0) 1565 goto pool_props_bad; 1566 1567 if (nvlist_lookup_string(props, 1568 zpool_prop_to_name(ZPOOL_PROP_TNAME), &tname) == 0) 1569 spa_name = tname; 1570 } 1571 1572 error = spa_create(zc->zc_name, config, props, zplprops, dcp); 1573 1574 /* 1575 * Set the remaining root properties 1576 */ 1577 if (!error && (error = zfs_set_prop_nvlist(spa_name, 1578 ZPROP_SRC_LOCAL, rootprops, NULL)) != 0) 1579 (void) spa_destroy(spa_name); 1580 1581 pool_props_bad: 1582 nvlist_free(rootprops); 1583 nvlist_free(zplprops); 1584 nvlist_free(config); 1585 nvlist_free(props); 1586 dsl_crypto_params_free(dcp, !!error); 1587 1588 return (error); 1589 } 1590 1591 static int 1592 zfs_ioc_pool_destroy(zfs_cmd_t *zc) 1593 { 1594 int error; 1595 zfs_log_history(zc); 1596 error = spa_destroy(zc->zc_name); 1597 if (error == 0) 1598 zvol_remove_minors(zc->zc_name); 1599 return (error); 1600 } 1601 1602 static int 1603 zfs_ioc_pool_import(zfs_cmd_t *zc) 1604 { 1605 nvlist_t *config, *props = NULL; 1606 uint64_t guid; 1607 int error; 1608 1609 if ((error = get_nvlist(zc->zc_nvlist_conf, zc->zc_nvlist_conf_size, 1610 zc->zc_iflags, &config)) != 0) 1611 return (error); 1612 1613 if (zc->zc_nvlist_src_size != 0 && (error = 1614 get_nvlist(zc->zc_nvlist_src, zc->zc_nvlist_src_size, 1615 zc->zc_iflags, &props))) { 1616 nvlist_free(config); 1617 return (error); 1618 } 1619 1620 if (nvlist_lookup_uint64(config, ZPOOL_CONFIG_POOL_GUID, &guid) != 0 || 1621 guid != zc->zc_guid) 1622 error = SET_ERROR(EINVAL); 1623 else 1624 error = spa_import(zc->zc_name, config, props, zc->zc_cookie); 1625 1626 if (zc->zc_nvlist_dst != 0) { 1627 int err; 1628 1629 if ((err = put_nvlist(zc, config)) != 0) 1630 error = err; 1631 } 1632 1633 nvlist_free(config); 1634 1635 nvlist_free(props); 1636 1637 return (error); 1638 } 1639 1640 static int 1641 zfs_ioc_pool_export(zfs_cmd_t *zc) 1642 { 1643 int error; 1644 boolean_t force = (boolean_t)zc->zc_cookie; 1645 boolean_t hardforce = (boolean_t)zc->zc_guid; 1646 1647 zfs_log_history(zc); 1648 error = spa_export(zc->zc_name, NULL, force, hardforce); 1649 if (error == 0) 1650 zvol_remove_minors(zc->zc_name); 1651 return (error); 1652 } 1653 1654 static int 1655 zfs_ioc_pool_configs(zfs_cmd_t *zc) 1656 { 1657 nvlist_t *configs; 1658 int error; 1659 1660 if ((configs = spa_all_configs(&zc->zc_cookie)) == NULL) 1661 return (SET_ERROR(EEXIST)); 1662 1663 error = put_nvlist(zc, configs); 1664 1665 nvlist_free(configs); 1666 1667 return (error); 1668 } 1669 1670 /* 1671 * inputs: 1672 * zc_name name of the pool 1673 * 1674 * outputs: 1675 * zc_cookie real errno 1676 * zc_nvlist_dst config nvlist 1677 * zc_nvlist_dst_size size of config nvlist 1678 */ 1679 static int 1680 zfs_ioc_pool_stats(zfs_cmd_t *zc) 1681 { 1682 nvlist_t *config; 1683 int error; 1684 int ret = 0; 1685 1686 error = spa_get_stats(zc->zc_name, &config, zc->zc_value, 1687 sizeof (zc->zc_value)); 1688 1689 if (config != NULL) { 1690 ret = put_nvlist(zc, config); 1691 nvlist_free(config); 1692 1693 /* 1694 * The config may be present even if 'error' is non-zero. 1695 * In this case we return success, and preserve the real errno 1696 * in 'zc_cookie'. 1697 */ 1698 zc->zc_cookie = error; 1699 } else { 1700 ret = error; 1701 } 1702 1703 return (ret); 1704 } 1705 1706 /* 1707 * Try to import the given pool, returning pool stats as appropriate so that 1708 * user land knows which devices are available and overall pool health. 1709 */ 1710 static int 1711 zfs_ioc_pool_tryimport(zfs_cmd_t *zc) 1712 { 1713 nvlist_t *tryconfig, *config; 1714 int error; 1715 1716 if ((error = get_nvlist(zc->zc_nvlist_conf, zc->zc_nvlist_conf_size, 1717 zc->zc_iflags, &tryconfig)) != 0) 1718 return (error); 1719 1720 config = spa_tryimport(tryconfig); 1721 1722 nvlist_free(tryconfig); 1723 1724 if (config == NULL) 1725 return (SET_ERROR(EINVAL)); 1726 1727 error = put_nvlist(zc, config); 1728 nvlist_free(config); 1729 1730 return (error); 1731 } 1732 1733 /* 1734 * inputs: 1735 * zc_name name of the pool 1736 * zc_cookie scan func (pool_scan_func_t) 1737 * zc_flags scrub pause/resume flag (pool_scrub_cmd_t) 1738 */ 1739 static int 1740 zfs_ioc_pool_scan(zfs_cmd_t *zc) 1741 { 1742 spa_t *spa; 1743 int error; 1744 1745 if ((error = spa_open(zc->zc_name, &spa, FTAG)) != 0) 1746 return (error); 1747 1748 if (zc->zc_flags >= POOL_SCRUB_FLAGS_END) 1749 return (SET_ERROR(EINVAL)); 1750 1751 if (zc->zc_flags == POOL_SCRUB_PAUSE) 1752 error = spa_scrub_pause_resume(spa, POOL_SCRUB_PAUSE); 1753 else if (zc->zc_cookie == POOL_SCAN_NONE) 1754 error = spa_scan_stop(spa); 1755 else 1756 error = spa_scan(spa, zc->zc_cookie); 1757 1758 spa_close(spa, FTAG); 1759 1760 return (error); 1761 } 1762 1763 static int 1764 zfs_ioc_pool_freeze(zfs_cmd_t *zc) 1765 { 1766 spa_t *spa; 1767 int error; 1768 1769 error = spa_open(zc->zc_name, &spa, FTAG); 1770 if (error == 0) { 1771 spa_freeze(spa); 1772 spa_close(spa, FTAG); 1773 } 1774 return (error); 1775 } 1776 1777 static int 1778 zfs_ioc_pool_upgrade(zfs_cmd_t *zc) 1779 { 1780 spa_t *spa; 1781 int error; 1782 1783 if ((error = spa_open(zc->zc_name, &spa, FTAG)) != 0) 1784 return (error); 1785 1786 if (zc->zc_cookie < spa_version(spa) || 1787 !SPA_VERSION_IS_SUPPORTED(zc->zc_cookie)) { 1788 spa_close(spa, FTAG); 1789 return (SET_ERROR(EINVAL)); 1790 } 1791 1792 spa_upgrade(spa, zc->zc_cookie); 1793 spa_close(spa, FTAG); 1794 1795 return (error); 1796 } 1797 1798 static int 1799 zfs_ioc_pool_get_history(zfs_cmd_t *zc) 1800 { 1801 spa_t *spa; 1802 char *hist_buf; 1803 uint64_t size; 1804 int error; 1805 1806 if ((size = zc->zc_history_len) == 0) 1807 return (SET_ERROR(EINVAL)); 1808 1809 if ((error = spa_open(zc->zc_name, &spa, FTAG)) != 0) 1810 return (error); 1811 1812 if (spa_version(spa) < SPA_VERSION_ZPOOL_HISTORY) { 1813 spa_close(spa, FTAG); 1814 return (SET_ERROR(ENOTSUP)); 1815 } 1816 1817 hist_buf = kmem_alloc(size, KM_SLEEP); 1818 if ((error = spa_history_get(spa, &zc->zc_history_offset, 1819 &zc->zc_history_len, hist_buf)) == 0) { 1820 error = ddi_copyout(hist_buf, 1821 (void *)(uintptr_t)zc->zc_history, 1822 zc->zc_history_len, zc->zc_iflags); 1823 } 1824 1825 spa_close(spa, FTAG); 1826 kmem_free(hist_buf, size); 1827 return (error); 1828 } 1829 1830 static int 1831 zfs_ioc_pool_reguid(zfs_cmd_t *zc) 1832 { 1833 spa_t *spa; 1834 int error; 1835 1836 error = spa_open(zc->zc_name, &spa, FTAG); 1837 if (error == 0) { 1838 error = spa_change_guid(spa); 1839 spa_close(spa, FTAG); 1840 } 1841 return (error); 1842 } 1843 1844 static int 1845 zfs_ioc_dsobj_to_dsname(zfs_cmd_t *zc) 1846 { 1847 return (dsl_dsobj_to_dsname(zc->zc_name, zc->zc_obj, zc->zc_value)); 1848 } 1849 1850 /* 1851 * inputs: 1852 * zc_name name of filesystem 1853 * zc_obj object to find 1854 * 1855 * outputs: 1856 * zc_value name of object 1857 */ 1858 static int 1859 zfs_ioc_obj_to_path(zfs_cmd_t *zc) 1860 { 1861 objset_t *os; 1862 int error; 1863 1864 /* XXX reading from objset not owned */ 1865 if ((error = dmu_objset_hold_flags(zc->zc_name, B_TRUE, 1866 FTAG, &os)) != 0) 1867 return (error); 1868 if (dmu_objset_type(os) != DMU_OST_ZFS) { 1869 dmu_objset_rele_flags(os, B_TRUE, FTAG); 1870 return (SET_ERROR(EINVAL)); 1871 } 1872 error = zfs_obj_to_path(os, zc->zc_obj, zc->zc_value, 1873 sizeof (zc->zc_value)); 1874 dmu_objset_rele_flags(os, B_TRUE, FTAG); 1875 1876 return (error); 1877 } 1878 1879 /* 1880 * inputs: 1881 * zc_name name of filesystem 1882 * zc_obj object to find 1883 * 1884 * outputs: 1885 * zc_stat stats on object 1886 * zc_value path to object 1887 */ 1888 static int 1889 zfs_ioc_obj_to_stats(zfs_cmd_t *zc) 1890 { 1891 objset_t *os; 1892 int error; 1893 1894 /* XXX reading from objset not owned */ 1895 if ((error = dmu_objset_hold_flags(zc->zc_name, B_TRUE, 1896 FTAG, &os)) != 0) 1897 return (error); 1898 if (dmu_objset_type(os) != DMU_OST_ZFS) { 1899 dmu_objset_rele_flags(os, B_TRUE, FTAG); 1900 return (SET_ERROR(EINVAL)); 1901 } 1902 error = zfs_obj_to_stats(os, zc->zc_obj, &zc->zc_stat, zc->zc_value, 1903 sizeof (zc->zc_value)); 1904 dmu_objset_rele_flags(os, B_TRUE, FTAG); 1905 1906 return (error); 1907 } 1908 1909 static int 1910 zfs_ioc_vdev_add(zfs_cmd_t *zc) 1911 { 1912 spa_t *spa; 1913 int error; 1914 nvlist_t *config, **l2cache, **spares; 1915 uint_t nl2cache = 0, nspares = 0; 1916 1917 error = spa_open(zc->zc_name, &spa, FTAG); 1918 if (error != 0) 1919 return (error); 1920 1921 error = get_nvlist(zc->zc_nvlist_conf, zc->zc_nvlist_conf_size, 1922 zc->zc_iflags, &config); 1923 (void) nvlist_lookup_nvlist_array(config, ZPOOL_CONFIG_L2CACHE, 1924 &l2cache, &nl2cache); 1925 1926 (void) nvlist_lookup_nvlist_array(config, ZPOOL_CONFIG_SPARES, 1927 &spares, &nspares); 1928 1929 /* 1930 * A root pool with concatenated devices is not supported. 1931 * Thus, can not add a device to a root pool. 1932 * 1933 * Intent log device can not be added to a rootpool because 1934 * during mountroot, zil is replayed, a seperated log device 1935 * can not be accessed during the mountroot time. 1936 * 1937 * l2cache and spare devices are ok to be added to a rootpool. 1938 */ 1939 if (spa_bootfs(spa) != 0 && nl2cache == 0 && nspares == 0) { 1940 nvlist_free(config); 1941 spa_close(spa, FTAG); 1942 return (SET_ERROR(EDOM)); 1943 } 1944 1945 if (error == 0) { 1946 error = spa_vdev_add(spa, config); 1947 nvlist_free(config); 1948 } 1949 spa_close(spa, FTAG); 1950 return (error); 1951 } 1952 1953 /* 1954 * inputs: 1955 * zc_name name of the pool 1956 * zc_guid guid of vdev to remove 1957 * zc_cookie cancel removal 1958 */ 1959 static int 1960 zfs_ioc_vdev_remove(zfs_cmd_t *zc) 1961 { 1962 spa_t *spa; 1963 int error; 1964 1965 error = spa_open(zc->zc_name, &spa, FTAG); 1966 if (error != 0) 1967 return (error); 1968 if (zc->zc_cookie != 0) { 1969 error = spa_vdev_remove_cancel(spa); 1970 } else { 1971 error = spa_vdev_remove(spa, zc->zc_guid, B_FALSE); 1972 } 1973 spa_close(spa, FTAG); 1974 return (error); 1975 } 1976 1977 static int 1978 zfs_ioc_vdev_set_state(zfs_cmd_t *zc) 1979 { 1980 spa_t *spa; 1981 int error; 1982 vdev_state_t newstate = VDEV_STATE_UNKNOWN; 1983 1984 if ((error = spa_open(zc->zc_name, &spa, FTAG)) != 0) 1985 return (error); 1986 switch (zc->zc_cookie) { 1987 case VDEV_STATE_ONLINE: 1988 error = vdev_online(spa, zc->zc_guid, zc->zc_obj, &newstate); 1989 break; 1990 1991 case VDEV_STATE_OFFLINE: 1992 error = vdev_offline(spa, zc->zc_guid, zc->zc_obj); 1993 break; 1994 1995 case VDEV_STATE_FAULTED: 1996 if (zc->zc_obj != VDEV_AUX_ERR_EXCEEDED && 1997 zc->zc_obj != VDEV_AUX_EXTERNAL) 1998 zc->zc_obj = VDEV_AUX_ERR_EXCEEDED; 1999 2000 error = vdev_fault(spa, zc->zc_guid, zc->zc_obj); 2001 break; 2002 2003 case VDEV_STATE_DEGRADED: 2004 if (zc->zc_obj != VDEV_AUX_ERR_EXCEEDED && 2005 zc->zc_obj != VDEV_AUX_EXTERNAL) 2006 zc->zc_obj = VDEV_AUX_ERR_EXCEEDED; 2007 2008 error = vdev_degrade(spa, zc->zc_guid, zc->zc_obj); 2009 break; 2010 2011 default: 2012 error = SET_ERROR(EINVAL); 2013 } 2014 zc->zc_cookie = newstate; 2015 spa_close(spa, FTAG); 2016 return (error); 2017 } 2018 2019 static int 2020 zfs_ioc_vdev_attach(zfs_cmd_t *zc) 2021 { 2022 spa_t *spa; 2023 int replacing = zc->zc_cookie; 2024 nvlist_t *config; 2025 int error; 2026 2027 if ((error = spa_open(zc->zc_name, &spa, FTAG)) != 0) 2028 return (error); 2029 2030 if ((error = get_nvlist(zc->zc_nvlist_conf, zc->zc_nvlist_conf_size, 2031 zc->zc_iflags, &config)) == 0) { 2032 error = spa_vdev_attach(spa, zc->zc_guid, config, replacing); 2033 nvlist_free(config); 2034 } 2035 2036 spa_close(spa, FTAG); 2037 return (error); 2038 } 2039 2040 static int 2041 zfs_ioc_vdev_detach(zfs_cmd_t *zc) 2042 { 2043 spa_t *spa; 2044 int error; 2045 2046 if ((error = spa_open(zc->zc_name, &spa, FTAG)) != 0) 2047 return (error); 2048 2049 error = spa_vdev_detach(spa, zc->zc_guid, 0, B_FALSE); 2050 2051 spa_close(spa, FTAG); 2052 return (error); 2053 } 2054 2055 static int 2056 zfs_ioc_vdev_split(zfs_cmd_t *zc) 2057 { 2058 spa_t *spa; 2059 nvlist_t *config, *props = NULL; 2060 int error; 2061 boolean_t exp = !!(zc->zc_cookie & ZPOOL_EXPORT_AFTER_SPLIT); 2062 2063 if ((error = spa_open(zc->zc_name, &spa, FTAG)) != 0) 2064 return (error); 2065 2066 if (error = get_nvlist(zc->zc_nvlist_conf, zc->zc_nvlist_conf_size, 2067 zc->zc_iflags, &config)) { 2068 spa_close(spa, FTAG); 2069 return (error); 2070 } 2071 2072 if (zc->zc_nvlist_src_size != 0 && (error = 2073 get_nvlist(zc->zc_nvlist_src, zc->zc_nvlist_src_size, 2074 zc->zc_iflags, &props))) { 2075 spa_close(spa, FTAG); 2076 nvlist_free(config); 2077 return (error); 2078 } 2079 2080 error = spa_vdev_split_mirror(spa, zc->zc_string, config, props, exp); 2081 2082 spa_close(spa, FTAG); 2083 2084 nvlist_free(config); 2085 nvlist_free(props); 2086 2087 return (error); 2088 } 2089 2090 static int 2091 zfs_ioc_vdev_setpath(zfs_cmd_t *zc) 2092 { 2093 spa_t *spa; 2094 char *path = zc->zc_value; 2095 uint64_t guid = zc->zc_guid; 2096 int error; 2097 2098 error = spa_open(zc->zc_name, &spa, FTAG); 2099 if (error != 0) 2100 return (error); 2101 2102 error = spa_vdev_setpath(spa, guid, path); 2103 spa_close(spa, FTAG); 2104 return (error); 2105 } 2106 2107 static int 2108 zfs_ioc_vdev_setfru(zfs_cmd_t *zc) 2109 { 2110 spa_t *spa; 2111 char *fru = 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_setfru(spa, guid, fru); 2120 spa_close(spa, FTAG); 2121 return (error); 2122 } 2123 2124 static int 2125 zfs_ioc_objset_stats_impl(zfs_cmd_t *zc, objset_t *os) 2126 { 2127 int error = 0; 2128 nvlist_t *nv; 2129 2130 dmu_objset_fast_stat(os, &zc->zc_objset_stats); 2131 2132 if (zc->zc_nvlist_dst != 0 && 2133 (error = dsl_prop_get_all(os, &nv)) == 0) { 2134 dmu_objset_stats(os, nv); 2135 /* 2136 * NB: zvol_get_stats() will read the objset contents, 2137 * which we aren't supposed to do with a 2138 * DS_MODE_USER hold, because it could be 2139 * inconsistent. So this is a bit of a workaround... 2140 * XXX reading with out owning 2141 */ 2142 if (!zc->zc_objset_stats.dds_inconsistent && 2143 dmu_objset_type(os) == DMU_OST_ZVOL) { 2144 error = zvol_get_stats(os, nv); 2145 if (error == EIO) 2146 return (error); 2147 VERIFY0(error); 2148 } 2149 error = put_nvlist(zc, nv); 2150 nvlist_free(nv); 2151 } 2152 2153 return (error); 2154 } 2155 2156 /* 2157 * inputs: 2158 * zc_name name of filesystem 2159 * zc_nvlist_dst_size size of buffer for property nvlist 2160 * 2161 * outputs: 2162 * zc_objset_stats stats 2163 * zc_nvlist_dst property nvlist 2164 * zc_nvlist_dst_size size of property nvlist 2165 */ 2166 static int 2167 zfs_ioc_objset_stats(zfs_cmd_t *zc) 2168 { 2169 objset_t *os; 2170 int error; 2171 2172 error = dmu_objset_hold(zc->zc_name, FTAG, &os); 2173 if (error == 0) { 2174 error = zfs_ioc_objset_stats_impl(zc, os); 2175 dmu_objset_rele(os, FTAG); 2176 } 2177 2178 return (error); 2179 } 2180 2181 /* 2182 * inputs: 2183 * zc_name name of filesystem 2184 * zc_nvlist_dst_size size of buffer for property nvlist 2185 * 2186 * outputs: 2187 * zc_nvlist_dst received property nvlist 2188 * zc_nvlist_dst_size size of received property nvlist 2189 * 2190 * Gets received properties (distinct from local properties on or after 2191 * SPA_VERSION_RECVD_PROPS) for callers who want to differentiate received from 2192 * local property values. 2193 */ 2194 static int 2195 zfs_ioc_objset_recvd_props(zfs_cmd_t *zc) 2196 { 2197 int error = 0; 2198 nvlist_t *nv; 2199 2200 /* 2201 * Without this check, we would return local property values if the 2202 * caller has not already received properties on or after 2203 * SPA_VERSION_RECVD_PROPS. 2204 */ 2205 if (!dsl_prop_get_hasrecvd(zc->zc_name)) 2206 return (SET_ERROR(ENOTSUP)); 2207 2208 if (zc->zc_nvlist_dst != 0 && 2209 (error = dsl_prop_get_received(zc->zc_name, &nv)) == 0) { 2210 error = put_nvlist(zc, nv); 2211 nvlist_free(nv); 2212 } 2213 2214 return (error); 2215 } 2216 2217 static int 2218 nvl_add_zplprop(objset_t *os, nvlist_t *props, zfs_prop_t prop) 2219 { 2220 uint64_t value; 2221 int error; 2222 2223 /* 2224 * zfs_get_zplprop() will either find a value or give us 2225 * the default value (if there is one). 2226 */ 2227 if ((error = zfs_get_zplprop(os, prop, &value)) != 0) 2228 return (error); 2229 VERIFY(nvlist_add_uint64(props, zfs_prop_to_name(prop), value) == 0); 2230 return (0); 2231 } 2232 2233 /* 2234 * inputs: 2235 * zc_name name of filesystem 2236 * zc_nvlist_dst_size size of buffer for zpl property nvlist 2237 * 2238 * outputs: 2239 * zc_nvlist_dst zpl property nvlist 2240 * zc_nvlist_dst_size size of zpl property nvlist 2241 */ 2242 static int 2243 zfs_ioc_objset_zplprops(zfs_cmd_t *zc) 2244 { 2245 objset_t *os; 2246 int err; 2247 2248 /* XXX reading without owning */ 2249 if (err = dmu_objset_hold(zc->zc_name, FTAG, &os)) 2250 return (err); 2251 2252 dmu_objset_fast_stat(os, &zc->zc_objset_stats); 2253 2254 /* 2255 * NB: nvl_add_zplprop() will read the objset contents, 2256 * which we aren't supposed to do with a DS_MODE_USER 2257 * hold, because it could be inconsistent. 2258 */ 2259 if (zc->zc_nvlist_dst != 0 && 2260 !zc->zc_objset_stats.dds_inconsistent && 2261 dmu_objset_type(os) == DMU_OST_ZFS) { 2262 nvlist_t *nv; 2263 2264 VERIFY(nvlist_alloc(&nv, NV_UNIQUE_NAME, KM_SLEEP) == 0); 2265 if ((err = nvl_add_zplprop(os, nv, ZFS_PROP_VERSION)) == 0 && 2266 (err = nvl_add_zplprop(os, nv, ZFS_PROP_NORMALIZE)) == 0 && 2267 (err = nvl_add_zplprop(os, nv, ZFS_PROP_UTF8ONLY)) == 0 && 2268 (err = nvl_add_zplprop(os, nv, ZFS_PROP_CASE)) == 0) 2269 err = put_nvlist(zc, nv); 2270 nvlist_free(nv); 2271 } else { 2272 err = SET_ERROR(ENOENT); 2273 } 2274 dmu_objset_rele(os, FTAG); 2275 return (err); 2276 } 2277 2278 static boolean_t 2279 dataset_name_hidden(const char *name) 2280 { 2281 /* 2282 * Skip over datasets that are not visible in this zone, 2283 * internal datasets (which have a $ in their name), and 2284 * temporary datasets (which have a % in their name). 2285 */ 2286 if (strchr(name, '$') != NULL) 2287 return (B_TRUE); 2288 if (strchr(name, '%') != NULL) 2289 return (B_TRUE); 2290 if (!INGLOBALZONE(curproc) && !zone_dataset_visible(name, NULL)) 2291 return (B_TRUE); 2292 return (B_FALSE); 2293 } 2294 2295 /* 2296 * inputs: 2297 * zc_name name of filesystem 2298 * zc_cookie zap cursor 2299 * zc_nvlist_dst_size size of buffer for property nvlist 2300 * 2301 * outputs: 2302 * zc_name name of next filesystem 2303 * zc_cookie zap cursor 2304 * zc_objset_stats stats 2305 * zc_nvlist_dst property nvlist 2306 * zc_nvlist_dst_size size of property nvlist 2307 */ 2308 static int 2309 zfs_ioc_dataset_list_next(zfs_cmd_t *zc) 2310 { 2311 objset_t *os; 2312 int error; 2313 char *p; 2314 size_t orig_len = strlen(zc->zc_name); 2315 2316 top: 2317 if (error = dmu_objset_hold(zc->zc_name, FTAG, &os)) { 2318 if (error == ENOENT) 2319 error = SET_ERROR(ESRCH); 2320 return (error); 2321 } 2322 2323 p = strrchr(zc->zc_name, '/'); 2324 if (p == NULL || p[1] != '\0') 2325 (void) strlcat(zc->zc_name, "/", sizeof (zc->zc_name)); 2326 p = zc->zc_name + strlen(zc->zc_name); 2327 2328 do { 2329 error = dmu_dir_list_next(os, 2330 sizeof (zc->zc_name) - (p - zc->zc_name), p, 2331 NULL, &zc->zc_cookie); 2332 if (error == ENOENT) 2333 error = SET_ERROR(ESRCH); 2334 } while (error == 0 && dataset_name_hidden(zc->zc_name)); 2335 dmu_objset_rele(os, FTAG); 2336 2337 /* 2338 * If it's an internal dataset (ie. with a '$' in its name), 2339 * don't try to get stats for it, otherwise we'll return ENOENT. 2340 */ 2341 if (error == 0 && strchr(zc->zc_name, '$') == NULL) { 2342 error = zfs_ioc_objset_stats(zc); /* fill in the stats */ 2343 if (error == ENOENT) { 2344 /* We lost a race with destroy, get the next one. */ 2345 zc->zc_name[orig_len] = '\0'; 2346 goto top; 2347 } 2348 } 2349 return (error); 2350 } 2351 2352 /* 2353 * inputs: 2354 * zc_name name of filesystem 2355 * zc_cookie zap cursor 2356 * zc_nvlist_dst_size size of buffer for property nvlist 2357 * zc_simple when set, only name is requested 2358 * 2359 * outputs: 2360 * zc_name name of next snapshot 2361 * zc_objset_stats stats 2362 * zc_nvlist_dst property nvlist 2363 * zc_nvlist_dst_size size of property nvlist 2364 */ 2365 static int 2366 zfs_ioc_snapshot_list_next(zfs_cmd_t *zc) 2367 { 2368 objset_t *os; 2369 int error; 2370 2371 error = dmu_objset_hold(zc->zc_name, FTAG, &os); 2372 if (error != 0) { 2373 return (error == ENOENT ? ESRCH : error); 2374 } 2375 2376 /* 2377 * A dataset name of maximum length cannot have any snapshots, 2378 * so exit immediately. 2379 */ 2380 if (strlcat(zc->zc_name, "@", sizeof (zc->zc_name)) >= 2381 ZFS_MAX_DATASET_NAME_LEN) { 2382 dmu_objset_rele(os, FTAG); 2383 return (SET_ERROR(ESRCH)); 2384 } 2385 2386 error = dmu_snapshot_list_next(os, 2387 sizeof (zc->zc_name) - strlen(zc->zc_name), 2388 zc->zc_name + strlen(zc->zc_name), &zc->zc_obj, &zc->zc_cookie, 2389 NULL); 2390 2391 if (error == 0 && !zc->zc_simple) { 2392 dsl_dataset_t *ds; 2393 dsl_pool_t *dp = os->os_dsl_dataset->ds_dir->dd_pool; 2394 2395 error = dsl_dataset_hold_obj(dp, zc->zc_obj, FTAG, &ds); 2396 if (error == 0) { 2397 objset_t *ossnap; 2398 2399 error = dmu_objset_from_ds(ds, &ossnap); 2400 if (error == 0) 2401 error = zfs_ioc_objset_stats_impl(zc, ossnap); 2402 dsl_dataset_rele(ds, FTAG); 2403 } 2404 } else if (error == ENOENT) { 2405 error = SET_ERROR(ESRCH); 2406 } 2407 2408 dmu_objset_rele(os, FTAG); 2409 /* if we failed, undo the @ that we tacked on to zc_name */ 2410 if (error != 0) 2411 *strchr(zc->zc_name, '@') = '\0'; 2412 return (error); 2413 } 2414 2415 static int 2416 zfs_prop_set_userquota(const char *dsname, nvpair_t *pair) 2417 { 2418 const char *propname = nvpair_name(pair); 2419 uint64_t *valary; 2420 unsigned int vallen; 2421 const char *domain; 2422 char *dash; 2423 zfs_userquota_prop_t type; 2424 uint64_t rid; 2425 uint64_t quota; 2426 zfsvfs_t *zfsvfs; 2427 int err; 2428 2429 if (nvpair_type(pair) == DATA_TYPE_NVLIST) { 2430 nvlist_t *attrs; 2431 VERIFY(nvpair_value_nvlist(pair, &attrs) == 0); 2432 if (nvlist_lookup_nvpair(attrs, ZPROP_VALUE, 2433 &pair) != 0) 2434 return (SET_ERROR(EINVAL)); 2435 } 2436 2437 /* 2438 * A correctly constructed propname is encoded as 2439 * userquota@<rid>-<domain>. 2440 */ 2441 if ((dash = strchr(propname, '-')) == NULL || 2442 nvpair_value_uint64_array(pair, &valary, &vallen) != 0 || 2443 vallen != 3) 2444 return (SET_ERROR(EINVAL)); 2445 2446 domain = dash + 1; 2447 type = valary[0]; 2448 rid = valary[1]; 2449 quota = valary[2]; 2450 2451 err = zfsvfs_hold(dsname, FTAG, &zfsvfs, B_FALSE); 2452 if (err == 0) { 2453 err = zfs_set_userquota(zfsvfs, type, domain, rid, quota); 2454 zfsvfs_rele(zfsvfs, FTAG); 2455 } 2456 2457 return (err); 2458 } 2459 2460 /* 2461 * If the named property is one that has a special function to set its value, 2462 * return 0 on success and a positive error code on failure; otherwise if it is 2463 * not one of the special properties handled by this function, return -1. 2464 * 2465 * XXX: It would be better for callers of the property interface if we handled 2466 * these special cases in dsl_prop.c (in the dsl layer). 2467 */ 2468 static int 2469 zfs_prop_set_special(const char *dsname, zprop_source_t source, 2470 nvpair_t *pair) 2471 { 2472 const char *propname = nvpair_name(pair); 2473 zfs_prop_t prop = zfs_name_to_prop(propname); 2474 uint64_t intval = 0; 2475 char *strval = NULL; 2476 int err = -1; 2477 2478 if (prop == ZPROP_INVAL) { 2479 if (zfs_prop_userquota(propname)) 2480 return (zfs_prop_set_userquota(dsname, pair)); 2481 return (-1); 2482 } 2483 2484 if (nvpair_type(pair) == DATA_TYPE_NVLIST) { 2485 nvlist_t *attrs; 2486 VERIFY(nvpair_value_nvlist(pair, &attrs) == 0); 2487 VERIFY(nvlist_lookup_nvpair(attrs, ZPROP_VALUE, 2488 &pair) == 0); 2489 } 2490 2491 /* all special properties are numeric except for keylocation */ 2492 if (zfs_prop_get_type(prop) == PROP_TYPE_STRING) { 2493 strval = fnvpair_value_string(pair); 2494 } else { 2495 intval = fnvpair_value_uint64(pair); 2496 } 2497 2498 switch (prop) { 2499 case ZFS_PROP_QUOTA: 2500 err = dsl_dir_set_quota(dsname, source, intval); 2501 break; 2502 case ZFS_PROP_REFQUOTA: 2503 err = dsl_dataset_set_refquota(dsname, source, intval); 2504 break; 2505 case ZFS_PROP_FILESYSTEM_LIMIT: 2506 case ZFS_PROP_SNAPSHOT_LIMIT: 2507 if (intval == UINT64_MAX) { 2508 /* clearing the limit, just do it */ 2509 err = 0; 2510 } else { 2511 err = dsl_dir_activate_fs_ss_limit(dsname); 2512 } 2513 /* 2514 * Set err to -1 to force the zfs_set_prop_nvlist code down the 2515 * default path to set the value in the nvlist. 2516 */ 2517 if (err == 0) 2518 err = -1; 2519 break; 2520 case ZFS_PROP_KEYLOCATION: 2521 err = dsl_crypto_can_set_keylocation(dsname, strval); 2522 2523 /* 2524 * Set err to -1 to force the zfs_set_prop_nvlist code down the 2525 * default path to set the value in the nvlist. 2526 */ 2527 if (err == 0) 2528 err = -1; 2529 break; 2530 case ZFS_PROP_RESERVATION: 2531 err = dsl_dir_set_reservation(dsname, source, intval); 2532 break; 2533 case ZFS_PROP_REFRESERVATION: 2534 err = dsl_dataset_set_refreservation(dsname, source, intval); 2535 break; 2536 case ZFS_PROP_VOLSIZE: 2537 err = zvol_set_volsize(dsname, intval); 2538 break; 2539 case ZFS_PROP_VERSION: 2540 { 2541 zfsvfs_t *zfsvfs; 2542 2543 if ((err = zfsvfs_hold(dsname, FTAG, &zfsvfs, B_TRUE)) != 0) 2544 break; 2545 2546 err = zfs_set_version(zfsvfs, intval); 2547 zfsvfs_rele(zfsvfs, FTAG); 2548 2549 if (err == 0 && intval >= ZPL_VERSION_USERSPACE) { 2550 zfs_cmd_t *zc; 2551 2552 zc = kmem_zalloc(sizeof (zfs_cmd_t), KM_SLEEP); 2553 (void) strcpy(zc->zc_name, dsname); 2554 (void) zfs_ioc_userspace_upgrade(zc); 2555 kmem_free(zc, sizeof (zfs_cmd_t)); 2556 } 2557 break; 2558 } 2559 default: 2560 err = -1; 2561 } 2562 2563 return (err); 2564 } 2565 2566 /* 2567 * This function is best effort. If it fails to set any of the given properties, 2568 * it continues to set as many as it can and returns the last error 2569 * encountered. If the caller provides a non-NULL errlist, it will be filled in 2570 * with the list of names of all the properties that failed along with the 2571 * corresponding error numbers. 2572 * 2573 * If every property is set successfully, zero is returned and errlist is not 2574 * modified. 2575 */ 2576 int 2577 zfs_set_prop_nvlist(const char *dsname, zprop_source_t source, nvlist_t *nvl, 2578 nvlist_t *errlist) 2579 { 2580 nvpair_t *pair; 2581 nvpair_t *propval; 2582 int rv = 0; 2583 uint64_t intval; 2584 char *strval; 2585 nvlist_t *genericnvl = fnvlist_alloc(); 2586 nvlist_t *retrynvl = fnvlist_alloc(); 2587 2588 retry: 2589 pair = NULL; 2590 while ((pair = nvlist_next_nvpair(nvl, pair)) != NULL) { 2591 const char *propname = nvpair_name(pair); 2592 zfs_prop_t prop = zfs_name_to_prop(propname); 2593 int err = 0; 2594 2595 /* decode the property value */ 2596 propval = pair; 2597 if (nvpair_type(pair) == DATA_TYPE_NVLIST) { 2598 nvlist_t *attrs; 2599 attrs = fnvpair_value_nvlist(pair); 2600 if (nvlist_lookup_nvpair(attrs, ZPROP_VALUE, 2601 &propval) != 0) 2602 err = SET_ERROR(EINVAL); 2603 } 2604 2605 /* Validate value type */ 2606 if (err == 0 && prop == ZPROP_INVAL) { 2607 if (zfs_prop_user(propname)) { 2608 if (nvpair_type(propval) != DATA_TYPE_STRING) 2609 err = SET_ERROR(EINVAL); 2610 } else if (zfs_prop_userquota(propname)) { 2611 if (nvpair_type(propval) != 2612 DATA_TYPE_UINT64_ARRAY) 2613 err = SET_ERROR(EINVAL); 2614 } else { 2615 err = SET_ERROR(EINVAL); 2616 } 2617 } else if (err == 0) { 2618 if (nvpair_type(propval) == DATA_TYPE_STRING) { 2619 if (zfs_prop_get_type(prop) != PROP_TYPE_STRING) 2620 err = SET_ERROR(EINVAL); 2621 } else if (nvpair_type(propval) == DATA_TYPE_UINT64) { 2622 const char *unused; 2623 2624 intval = fnvpair_value_uint64(propval); 2625 2626 switch (zfs_prop_get_type(prop)) { 2627 case PROP_TYPE_NUMBER: 2628 break; 2629 case PROP_TYPE_STRING: 2630 err = SET_ERROR(EINVAL); 2631 break; 2632 case PROP_TYPE_INDEX: 2633 if (zfs_prop_index_to_string(prop, 2634 intval, &unused) != 0) 2635 err = SET_ERROR(EINVAL); 2636 break; 2637 default: 2638 cmn_err(CE_PANIC, 2639 "unknown property type"); 2640 } 2641 } else { 2642 err = SET_ERROR(EINVAL); 2643 } 2644 } 2645 2646 /* Validate permissions */ 2647 if (err == 0) 2648 err = zfs_check_settable(dsname, pair, CRED()); 2649 2650 if (err == 0) { 2651 err = zfs_prop_set_special(dsname, source, pair); 2652 if (err == -1) { 2653 /* 2654 * For better performance we build up a list of 2655 * properties to set in a single transaction. 2656 */ 2657 err = nvlist_add_nvpair(genericnvl, pair); 2658 } else if (err != 0 && nvl != retrynvl) { 2659 /* 2660 * This may be a spurious error caused by 2661 * receiving quota and reservation out of order. 2662 * Try again in a second pass. 2663 */ 2664 err = nvlist_add_nvpair(retrynvl, pair); 2665 } 2666 } 2667 2668 if (err != 0) { 2669 if (errlist != NULL) 2670 fnvlist_add_int32(errlist, propname, err); 2671 rv = err; 2672 } 2673 } 2674 2675 if (nvl != retrynvl && !nvlist_empty(retrynvl)) { 2676 nvl = retrynvl; 2677 goto retry; 2678 } 2679 2680 if (!nvlist_empty(genericnvl) && 2681 dsl_props_set(dsname, source, genericnvl) != 0) { 2682 /* 2683 * If this fails, we still want to set as many properties as we 2684 * can, so try setting them individually. 2685 */ 2686 pair = NULL; 2687 while ((pair = nvlist_next_nvpair(genericnvl, pair)) != NULL) { 2688 const char *propname = nvpair_name(pair); 2689 int err = 0; 2690 2691 propval = pair; 2692 if (nvpair_type(pair) == DATA_TYPE_NVLIST) { 2693 nvlist_t *attrs; 2694 attrs = fnvpair_value_nvlist(pair); 2695 propval = fnvlist_lookup_nvpair(attrs, 2696 ZPROP_VALUE); 2697 } 2698 2699 if (nvpair_type(propval) == DATA_TYPE_STRING) { 2700 strval = fnvpair_value_string(propval); 2701 err = dsl_prop_set_string(dsname, propname, 2702 source, strval); 2703 } else { 2704 intval = fnvpair_value_uint64(propval); 2705 err = dsl_prop_set_int(dsname, propname, source, 2706 intval); 2707 } 2708 2709 if (err != 0) { 2710 if (errlist != NULL) { 2711 fnvlist_add_int32(errlist, propname, 2712 err); 2713 } 2714 rv = err; 2715 } 2716 } 2717 } 2718 nvlist_free(genericnvl); 2719 nvlist_free(retrynvl); 2720 2721 return (rv); 2722 } 2723 2724 /* 2725 * Check that all the properties are valid user properties. 2726 */ 2727 static int 2728 zfs_check_userprops(const char *fsname, nvlist_t *nvl) 2729 { 2730 nvpair_t *pair = NULL; 2731 int error = 0; 2732 2733 while ((pair = nvlist_next_nvpair(nvl, pair)) != NULL) { 2734 const char *propname = nvpair_name(pair); 2735 2736 if (!zfs_prop_user(propname) || 2737 nvpair_type(pair) != DATA_TYPE_STRING) 2738 return (SET_ERROR(EINVAL)); 2739 2740 if (error = zfs_secpolicy_write_perms(fsname, 2741 ZFS_DELEG_PERM_USERPROP, CRED())) 2742 return (error); 2743 2744 if (strlen(propname) >= ZAP_MAXNAMELEN) 2745 return (SET_ERROR(ENAMETOOLONG)); 2746 2747 if (strlen(fnvpair_value_string(pair)) >= ZAP_MAXVALUELEN) 2748 return (E2BIG); 2749 } 2750 return (0); 2751 } 2752 2753 static void 2754 props_skip(nvlist_t *props, nvlist_t *skipped, nvlist_t **newprops) 2755 { 2756 nvpair_t *pair; 2757 2758 VERIFY(nvlist_alloc(newprops, NV_UNIQUE_NAME, KM_SLEEP) == 0); 2759 2760 pair = NULL; 2761 while ((pair = nvlist_next_nvpair(props, pair)) != NULL) { 2762 if (nvlist_exists(skipped, nvpair_name(pair))) 2763 continue; 2764 2765 VERIFY(nvlist_add_nvpair(*newprops, pair) == 0); 2766 } 2767 } 2768 2769 static int 2770 clear_received_props(const char *dsname, nvlist_t *props, 2771 nvlist_t *skipped) 2772 { 2773 int err = 0; 2774 nvlist_t *cleared_props = NULL; 2775 props_skip(props, skipped, &cleared_props); 2776 if (!nvlist_empty(cleared_props)) { 2777 /* 2778 * Acts on local properties until the dataset has received 2779 * properties at least once on or after SPA_VERSION_RECVD_PROPS. 2780 */ 2781 zprop_source_t flags = (ZPROP_SRC_NONE | 2782 (dsl_prop_get_hasrecvd(dsname) ? ZPROP_SRC_RECEIVED : 0)); 2783 err = zfs_set_prop_nvlist(dsname, flags, cleared_props, NULL); 2784 } 2785 nvlist_free(cleared_props); 2786 return (err); 2787 } 2788 2789 /* 2790 * inputs: 2791 * zc_name name of filesystem 2792 * zc_value name of property to set 2793 * zc_nvlist_src{_size} nvlist of properties to apply 2794 * zc_cookie received properties flag 2795 * 2796 * outputs: 2797 * zc_nvlist_dst{_size} error for each unapplied received property 2798 */ 2799 static int 2800 zfs_ioc_set_prop(zfs_cmd_t *zc) 2801 { 2802 nvlist_t *nvl; 2803 boolean_t received = zc->zc_cookie; 2804 zprop_source_t source = (received ? ZPROP_SRC_RECEIVED : 2805 ZPROP_SRC_LOCAL); 2806 nvlist_t *errors; 2807 int error; 2808 2809 if ((error = get_nvlist(zc->zc_nvlist_src, zc->zc_nvlist_src_size, 2810 zc->zc_iflags, &nvl)) != 0) 2811 return (error); 2812 2813 if (received) { 2814 nvlist_t *origprops; 2815 2816 if (dsl_prop_get_received(zc->zc_name, &origprops) == 0) { 2817 (void) clear_received_props(zc->zc_name, 2818 origprops, nvl); 2819 nvlist_free(origprops); 2820 } 2821 2822 error = dsl_prop_set_hasrecvd(zc->zc_name); 2823 } 2824 2825 errors = fnvlist_alloc(); 2826 if (error == 0) 2827 error = zfs_set_prop_nvlist(zc->zc_name, source, nvl, errors); 2828 2829 if (zc->zc_nvlist_dst != 0 && errors != NULL) { 2830 (void) put_nvlist(zc, errors); 2831 } 2832 2833 nvlist_free(errors); 2834 nvlist_free(nvl); 2835 return (error); 2836 } 2837 2838 /* 2839 * inputs: 2840 * zc_name name of filesystem 2841 * zc_value name of property to inherit 2842 * zc_cookie revert to received value if TRUE 2843 * 2844 * outputs: none 2845 */ 2846 static int 2847 zfs_ioc_inherit_prop(zfs_cmd_t *zc) 2848 { 2849 const char *propname = zc->zc_value; 2850 zfs_prop_t prop = zfs_name_to_prop(propname); 2851 boolean_t received = zc->zc_cookie; 2852 zprop_source_t source = (received 2853 ? ZPROP_SRC_NONE /* revert to received value, if any */ 2854 : ZPROP_SRC_INHERITED); /* explicitly inherit */ 2855 2856 if (received) { 2857 nvlist_t *dummy; 2858 nvpair_t *pair; 2859 zprop_type_t type; 2860 int err; 2861 2862 /* 2863 * zfs_prop_set_special() expects properties in the form of an 2864 * nvpair with type info. 2865 */ 2866 if (prop == ZPROP_INVAL) { 2867 if (!zfs_prop_user(propname)) 2868 return (SET_ERROR(EINVAL)); 2869 2870 type = PROP_TYPE_STRING; 2871 } else if (prop == ZFS_PROP_VOLSIZE || 2872 prop == ZFS_PROP_VERSION) { 2873 return (SET_ERROR(EINVAL)); 2874 } else { 2875 type = zfs_prop_get_type(prop); 2876 } 2877 2878 VERIFY(nvlist_alloc(&dummy, NV_UNIQUE_NAME, KM_SLEEP) == 0); 2879 2880 switch (type) { 2881 case PROP_TYPE_STRING: 2882 VERIFY(0 == nvlist_add_string(dummy, propname, "")); 2883 break; 2884 case PROP_TYPE_NUMBER: 2885 case PROP_TYPE_INDEX: 2886 VERIFY(0 == nvlist_add_uint64(dummy, propname, 0)); 2887 break; 2888 default: 2889 nvlist_free(dummy); 2890 return (SET_ERROR(EINVAL)); 2891 } 2892 2893 pair = nvlist_next_nvpair(dummy, NULL); 2894 err = zfs_prop_set_special(zc->zc_name, source, pair); 2895 nvlist_free(dummy); 2896 if (err != -1) 2897 return (err); /* special property already handled */ 2898 } else { 2899 /* 2900 * Only check this in the non-received case. We want to allow 2901 * 'inherit -S' to revert non-inheritable properties like quota 2902 * and reservation to the received or default values even though 2903 * they are not considered inheritable. 2904 */ 2905 if (prop != ZPROP_INVAL && !zfs_prop_inheritable(prop)) 2906 return (SET_ERROR(EINVAL)); 2907 } 2908 2909 /* property name has been validated by zfs_secpolicy_inherit_prop() */ 2910 return (dsl_prop_inherit(zc->zc_name, zc->zc_value, source)); 2911 } 2912 2913 static int 2914 zfs_ioc_pool_set_props(zfs_cmd_t *zc) 2915 { 2916 nvlist_t *props; 2917 spa_t *spa; 2918 int error; 2919 nvpair_t *pair; 2920 2921 if (error = get_nvlist(zc->zc_nvlist_src, zc->zc_nvlist_src_size, 2922 zc->zc_iflags, &props)) 2923 return (error); 2924 2925 /* 2926 * If the only property is the configfile, then just do a spa_lookup() 2927 * to handle the faulted case. 2928 */ 2929 pair = nvlist_next_nvpair(props, NULL); 2930 if (pair != NULL && strcmp(nvpair_name(pair), 2931 zpool_prop_to_name(ZPOOL_PROP_CACHEFILE)) == 0 && 2932 nvlist_next_nvpair(props, pair) == NULL) { 2933 mutex_enter(&spa_namespace_lock); 2934 if ((spa = spa_lookup(zc->zc_name)) != NULL) { 2935 spa_configfile_set(spa, props, B_FALSE); 2936 spa_write_cachefile(spa, B_FALSE, B_TRUE); 2937 } 2938 mutex_exit(&spa_namespace_lock); 2939 if (spa != NULL) { 2940 nvlist_free(props); 2941 return (0); 2942 } 2943 } 2944 2945 if ((error = spa_open(zc->zc_name, &spa, FTAG)) != 0) { 2946 nvlist_free(props); 2947 return (error); 2948 } 2949 2950 error = spa_prop_set(spa, props); 2951 2952 nvlist_free(props); 2953 spa_close(spa, FTAG); 2954 2955 return (error); 2956 } 2957 2958 static int 2959 zfs_ioc_pool_get_props(zfs_cmd_t *zc) 2960 { 2961 spa_t *spa; 2962 int error; 2963 nvlist_t *nvp = NULL; 2964 2965 if ((error = spa_open(zc->zc_name, &spa, FTAG)) != 0) { 2966 /* 2967 * If the pool is faulted, there may be properties we can still 2968 * get (such as altroot and cachefile), so attempt to get them 2969 * anyway. 2970 */ 2971 mutex_enter(&spa_namespace_lock); 2972 if ((spa = spa_lookup(zc->zc_name)) != NULL) 2973 error = spa_prop_get(spa, &nvp); 2974 mutex_exit(&spa_namespace_lock); 2975 } else { 2976 error = spa_prop_get(spa, &nvp); 2977 spa_close(spa, FTAG); 2978 } 2979 2980 if (error == 0 && zc->zc_nvlist_dst != 0) 2981 error = put_nvlist(zc, nvp); 2982 else 2983 error = SET_ERROR(EFAULT); 2984 2985 nvlist_free(nvp); 2986 return (error); 2987 } 2988 2989 /* 2990 * inputs: 2991 * zc_name name of filesystem 2992 * zc_nvlist_src{_size} nvlist of delegated permissions 2993 * zc_perm_action allow/unallow flag 2994 * 2995 * outputs: none 2996 */ 2997 static int 2998 zfs_ioc_set_fsacl(zfs_cmd_t *zc) 2999 { 3000 int error; 3001 nvlist_t *fsaclnv = NULL; 3002 3003 if ((error = get_nvlist(zc->zc_nvlist_src, zc->zc_nvlist_src_size, 3004 zc->zc_iflags, &fsaclnv)) != 0) 3005 return (error); 3006 3007 /* 3008 * Verify nvlist is constructed correctly 3009 */ 3010 if ((error = zfs_deleg_verify_nvlist(fsaclnv)) != 0) { 3011 nvlist_free(fsaclnv); 3012 return (SET_ERROR(EINVAL)); 3013 } 3014 3015 /* 3016 * If we don't have PRIV_SYS_MOUNT, then validate 3017 * that user is allowed to hand out each permission in 3018 * the nvlist(s) 3019 */ 3020 3021 error = secpolicy_zfs(CRED()); 3022 if (error != 0) { 3023 if (zc->zc_perm_action == B_FALSE) { 3024 error = dsl_deleg_can_allow(zc->zc_name, 3025 fsaclnv, CRED()); 3026 } else { 3027 error = dsl_deleg_can_unallow(zc->zc_name, 3028 fsaclnv, CRED()); 3029 } 3030 } 3031 3032 if (error == 0) 3033 error = dsl_deleg_set(zc->zc_name, fsaclnv, zc->zc_perm_action); 3034 3035 nvlist_free(fsaclnv); 3036 return (error); 3037 } 3038 3039 /* 3040 * inputs: 3041 * zc_name name of filesystem 3042 * 3043 * outputs: 3044 * zc_nvlist_src{_size} nvlist of delegated permissions 3045 */ 3046 static int 3047 zfs_ioc_get_fsacl(zfs_cmd_t *zc) 3048 { 3049 nvlist_t *nvp; 3050 int error; 3051 3052 if ((error = dsl_deleg_get(zc->zc_name, &nvp)) == 0) { 3053 error = put_nvlist(zc, nvp); 3054 nvlist_free(nvp); 3055 } 3056 3057 return (error); 3058 } 3059 3060 /* ARGSUSED */ 3061 static void 3062 zfs_create_cb(objset_t *os, void *arg, cred_t *cr, dmu_tx_t *tx) 3063 { 3064 zfs_creat_t *zct = arg; 3065 3066 zfs_create_fs(os, cr, zct->zct_zplprops, tx); 3067 } 3068 3069 #define ZFS_PROP_UNDEFINED ((uint64_t)-1) 3070 3071 /* 3072 * inputs: 3073 * os parent objset pointer (NULL if root fs) 3074 * fuids_ok fuids allowed in this version of the spa? 3075 * sa_ok SAs allowed in this version of the spa? 3076 * createprops list of properties requested by creator 3077 * 3078 * outputs: 3079 * zplprops values for the zplprops we attach to the master node object 3080 * is_ci true if requested file system will be purely case-insensitive 3081 * 3082 * Determine the settings for utf8only, normalization and 3083 * casesensitivity. Specific values may have been requested by the 3084 * creator and/or we can inherit values from the parent dataset. If 3085 * the file system is of too early a vintage, a creator can not 3086 * request settings for these properties, even if the requested 3087 * setting is the default value. We don't actually want to create dsl 3088 * properties for these, so remove them from the source nvlist after 3089 * processing. 3090 */ 3091 static int 3092 zfs_fill_zplprops_impl(objset_t *os, uint64_t zplver, 3093 boolean_t fuids_ok, boolean_t sa_ok, nvlist_t *createprops, 3094 nvlist_t *zplprops, boolean_t *is_ci) 3095 { 3096 uint64_t sense = ZFS_PROP_UNDEFINED; 3097 uint64_t norm = ZFS_PROP_UNDEFINED; 3098 uint64_t u8 = ZFS_PROP_UNDEFINED; 3099 3100 ASSERT(zplprops != NULL); 3101 3102 if (os != NULL && os->os_phys->os_type != DMU_OST_ZFS) 3103 return (SET_ERROR(EINVAL)); 3104 3105 /* 3106 * Pull out creator prop choices, if any. 3107 */ 3108 if (createprops) { 3109 (void) nvlist_lookup_uint64(createprops, 3110 zfs_prop_to_name(ZFS_PROP_VERSION), &zplver); 3111 (void) nvlist_lookup_uint64(createprops, 3112 zfs_prop_to_name(ZFS_PROP_NORMALIZE), &norm); 3113 (void) nvlist_remove_all(createprops, 3114 zfs_prop_to_name(ZFS_PROP_NORMALIZE)); 3115 (void) nvlist_lookup_uint64(createprops, 3116 zfs_prop_to_name(ZFS_PROP_UTF8ONLY), &u8); 3117 (void) nvlist_remove_all(createprops, 3118 zfs_prop_to_name(ZFS_PROP_UTF8ONLY)); 3119 (void) nvlist_lookup_uint64(createprops, 3120 zfs_prop_to_name(ZFS_PROP_CASE), &sense); 3121 (void) nvlist_remove_all(createprops, 3122 zfs_prop_to_name(ZFS_PROP_CASE)); 3123 } 3124 3125 /* 3126 * If the zpl version requested is whacky or the file system 3127 * or pool is version is too "young" to support normalization 3128 * and the creator tried to set a value for one of the props, 3129 * error out. 3130 */ 3131 if ((zplver < ZPL_VERSION_INITIAL || zplver > ZPL_VERSION) || 3132 (zplver >= ZPL_VERSION_FUID && !fuids_ok) || 3133 (zplver >= ZPL_VERSION_SA && !sa_ok) || 3134 (zplver < ZPL_VERSION_NORMALIZATION && 3135 (norm != ZFS_PROP_UNDEFINED || u8 != ZFS_PROP_UNDEFINED || 3136 sense != ZFS_PROP_UNDEFINED))) 3137 return (SET_ERROR(ENOTSUP)); 3138 3139 /* 3140 * Put the version in the zplprops 3141 */ 3142 VERIFY(nvlist_add_uint64(zplprops, 3143 zfs_prop_to_name(ZFS_PROP_VERSION), zplver) == 0); 3144 3145 if (norm == ZFS_PROP_UNDEFINED) 3146 VERIFY(zfs_get_zplprop(os, ZFS_PROP_NORMALIZE, &norm) == 0); 3147 VERIFY(nvlist_add_uint64(zplprops, 3148 zfs_prop_to_name(ZFS_PROP_NORMALIZE), norm) == 0); 3149 3150 /* 3151 * If we're normalizing, names must always be valid UTF-8 strings. 3152 */ 3153 if (norm) 3154 u8 = 1; 3155 if (u8 == ZFS_PROP_UNDEFINED) 3156 VERIFY(zfs_get_zplprop(os, ZFS_PROP_UTF8ONLY, &u8) == 0); 3157 VERIFY(nvlist_add_uint64(zplprops, 3158 zfs_prop_to_name(ZFS_PROP_UTF8ONLY), u8) == 0); 3159 3160 if (sense == ZFS_PROP_UNDEFINED) 3161 VERIFY(zfs_get_zplprop(os, ZFS_PROP_CASE, &sense) == 0); 3162 VERIFY(nvlist_add_uint64(zplprops, 3163 zfs_prop_to_name(ZFS_PROP_CASE), sense) == 0); 3164 3165 if (is_ci) 3166 *is_ci = (sense == ZFS_CASE_INSENSITIVE); 3167 3168 return (0); 3169 } 3170 3171 static int 3172 zfs_fill_zplprops(const char *dataset, nvlist_t *createprops, 3173 nvlist_t *zplprops, boolean_t *is_ci) 3174 { 3175 boolean_t fuids_ok, sa_ok; 3176 uint64_t zplver = ZPL_VERSION; 3177 objset_t *os = NULL; 3178 char parentname[ZFS_MAX_DATASET_NAME_LEN]; 3179 char *cp; 3180 spa_t *spa; 3181 uint64_t spa_vers; 3182 int error; 3183 3184 (void) strlcpy(parentname, dataset, sizeof (parentname)); 3185 cp = strrchr(parentname, '/'); 3186 ASSERT(cp != NULL); 3187 cp[0] = '\0'; 3188 3189 if ((error = spa_open(dataset, &spa, FTAG)) != 0) 3190 return (error); 3191 3192 spa_vers = spa_version(spa); 3193 spa_close(spa, FTAG); 3194 3195 zplver = zfs_zpl_version_map(spa_vers); 3196 fuids_ok = (zplver >= ZPL_VERSION_FUID); 3197 sa_ok = (zplver >= ZPL_VERSION_SA); 3198 3199 /* 3200 * Open parent object set so we can inherit zplprop values. 3201 */ 3202 if ((error = dmu_objset_hold(parentname, FTAG, &os)) != 0) 3203 return (error); 3204 3205 error = zfs_fill_zplprops_impl(os, zplver, fuids_ok, sa_ok, createprops, 3206 zplprops, is_ci); 3207 dmu_objset_rele(os, FTAG); 3208 return (error); 3209 } 3210 3211 static int 3212 zfs_fill_zplprops_root(uint64_t spa_vers, nvlist_t *createprops, 3213 nvlist_t *zplprops, boolean_t *is_ci) 3214 { 3215 boolean_t fuids_ok; 3216 boolean_t sa_ok; 3217 uint64_t zplver = ZPL_VERSION; 3218 int error; 3219 3220 zplver = zfs_zpl_version_map(spa_vers); 3221 fuids_ok = (zplver >= ZPL_VERSION_FUID); 3222 sa_ok = (zplver >= ZPL_VERSION_SA); 3223 3224 error = zfs_fill_zplprops_impl(NULL, zplver, fuids_ok, sa_ok, 3225 createprops, zplprops, is_ci); 3226 return (error); 3227 } 3228 3229 /* 3230 * innvl: { 3231 * "type" -> dmu_objset_type_t (int32) 3232 * (optional) "props" -> { prop -> value } 3233 * (optional) "hidden_args" -> { "wkeydata" -> value } 3234 * raw uint8_t array of encryption wrapping key data (32 bytes) 3235 * } 3236 * 3237 * outnvl: propname -> error code (int32) 3238 */ 3239 static int 3240 zfs_ioc_create(const char *fsname, nvlist_t *innvl, nvlist_t *outnvl) 3241 { 3242 int error = 0; 3243 zfs_creat_t zct = { 0 }; 3244 nvlist_t *nvprops = NULL; 3245 nvlist_t *hidden_args = NULL; 3246 void (*cbfunc)(objset_t *os, void *arg, cred_t *cr, dmu_tx_t *tx); 3247 int32_t type32; 3248 dmu_objset_type_t type; 3249 boolean_t is_insensitive = B_FALSE; 3250 dsl_crypto_params_t *dcp = NULL; 3251 3252 if (nvlist_lookup_int32(innvl, "type", &type32) != 0) 3253 return (SET_ERROR(EINVAL)); 3254 type = type32; 3255 (void) nvlist_lookup_nvlist(innvl, "props", &nvprops); 3256 (void) nvlist_lookup_nvlist(innvl, ZPOOL_HIDDEN_ARGS, &hidden_args); 3257 3258 switch (type) { 3259 case DMU_OST_ZFS: 3260 cbfunc = zfs_create_cb; 3261 break; 3262 3263 case DMU_OST_ZVOL: 3264 cbfunc = zvol_create_cb; 3265 break; 3266 3267 default: 3268 cbfunc = NULL; 3269 break; 3270 } 3271 if (strchr(fsname, '@') || 3272 strchr(fsname, '%')) 3273 return (SET_ERROR(EINVAL)); 3274 3275 zct.zct_props = nvprops; 3276 3277 if (cbfunc == NULL) 3278 return (SET_ERROR(EINVAL)); 3279 3280 if (type == DMU_OST_ZVOL) { 3281 uint64_t volsize, volblocksize; 3282 3283 if (nvprops == NULL) 3284 return (SET_ERROR(EINVAL)); 3285 if (nvlist_lookup_uint64(nvprops, 3286 zfs_prop_to_name(ZFS_PROP_VOLSIZE), &volsize) != 0) 3287 return (SET_ERROR(EINVAL)); 3288 3289 if ((error = nvlist_lookup_uint64(nvprops, 3290 zfs_prop_to_name(ZFS_PROP_VOLBLOCKSIZE), 3291 &volblocksize)) != 0 && error != ENOENT) 3292 return (SET_ERROR(EINVAL)); 3293 3294 if (error != 0) 3295 volblocksize = zfs_prop_default_numeric( 3296 ZFS_PROP_VOLBLOCKSIZE); 3297 3298 if ((error = zvol_check_volblocksize( 3299 volblocksize)) != 0 || 3300 (error = zvol_check_volsize(volsize, 3301 volblocksize)) != 0) 3302 return (error); 3303 } else if (type == DMU_OST_ZFS) { 3304 int error; 3305 3306 /* 3307 * We have to have normalization and 3308 * case-folding flags correct when we do the 3309 * file system creation, so go figure them out 3310 * now. 3311 */ 3312 VERIFY(nvlist_alloc(&zct.zct_zplprops, 3313 NV_UNIQUE_NAME, KM_SLEEP) == 0); 3314 error = zfs_fill_zplprops(fsname, nvprops, 3315 zct.zct_zplprops, &is_insensitive); 3316 if (error != 0) { 3317 nvlist_free(zct.zct_zplprops); 3318 return (error); 3319 } 3320 } 3321 3322 error = dsl_crypto_params_create_nvlist(DCP_CMD_NONE, nvprops, 3323 hidden_args, &dcp); 3324 if (error != 0) { 3325 nvlist_free(zct.zct_zplprops); 3326 return (error); 3327 } 3328 3329 error = dmu_objset_create(fsname, type, 3330 is_insensitive ? DS_FLAG_CI_DATASET : 0, dcp, cbfunc, &zct); 3331 3332 nvlist_free(zct.zct_zplprops); 3333 dsl_crypto_params_free(dcp, !!error); 3334 3335 /* 3336 * It would be nice to do this atomically. 3337 */ 3338 if (error == 0) { 3339 error = zfs_set_prop_nvlist(fsname, ZPROP_SRC_LOCAL, 3340 nvprops, outnvl); 3341 if (error != 0) 3342 (void) dsl_destroy_head(fsname); 3343 } 3344 return (error); 3345 } 3346 3347 /* 3348 * innvl: { 3349 * "origin" -> name of origin snapshot 3350 * (optional) "props" -> { prop -> value } 3351 * (optional) "hidden_args" -> { "wkeydata" -> value } 3352 * raw uint8_t array of encryption wrapping key data (32 bytes) 3353 * } 3354 * 3355 * outnvl: propname -> error code (int32) 3356 */ 3357 static int 3358 zfs_ioc_clone(const char *fsname, nvlist_t *innvl, nvlist_t *outnvl) 3359 { 3360 int error = 0; 3361 nvlist_t *nvprops = NULL; 3362 char *origin_name; 3363 3364 if (nvlist_lookup_string(innvl, "origin", &origin_name) != 0) 3365 return (SET_ERROR(EINVAL)); 3366 (void) nvlist_lookup_nvlist(innvl, "props", &nvprops); 3367 3368 if (strchr(fsname, '@') || 3369 strchr(fsname, '%')) 3370 return (SET_ERROR(EINVAL)); 3371 3372 if (dataset_namecheck(origin_name, NULL, NULL) != 0) 3373 return (SET_ERROR(EINVAL)); 3374 3375 error = dmu_objset_clone(fsname, origin_name); 3376 3377 /* 3378 * It would be nice to do this atomically. 3379 */ 3380 if (error == 0) { 3381 error = zfs_set_prop_nvlist(fsname, ZPROP_SRC_LOCAL, 3382 nvprops, outnvl); 3383 if (error != 0) 3384 (void) dsl_destroy_head(fsname); 3385 } 3386 return (error); 3387 } 3388 3389 /* ARGSUSED */ 3390 static int 3391 zfs_ioc_remap(const char *fsname, nvlist_t *innvl, nvlist_t *outnvl) 3392 { 3393 if (strchr(fsname, '@') || 3394 strchr(fsname, '%')) 3395 return (SET_ERROR(EINVAL)); 3396 3397 return (dmu_objset_remap_indirects(fsname)); 3398 } 3399 3400 /* 3401 * innvl: { 3402 * "snaps" -> { snapshot1, snapshot2 } 3403 * (optional) "props" -> { prop -> value (string) } 3404 * } 3405 * 3406 * outnvl: snapshot -> error code (int32) 3407 */ 3408 static int 3409 zfs_ioc_snapshot(const char *poolname, nvlist_t *innvl, nvlist_t *outnvl) 3410 { 3411 nvlist_t *snaps; 3412 nvlist_t *props = NULL; 3413 int error, poollen; 3414 nvpair_t *pair; 3415 3416 (void) nvlist_lookup_nvlist(innvl, "props", &props); 3417 if ((error = zfs_check_userprops(poolname, props)) != 0) 3418 return (error); 3419 3420 if (!nvlist_empty(props) && 3421 zfs_earlier_version(poolname, SPA_VERSION_SNAP_PROPS)) 3422 return (SET_ERROR(ENOTSUP)); 3423 3424 if (nvlist_lookup_nvlist(innvl, "snaps", &snaps) != 0) 3425 return (SET_ERROR(EINVAL)); 3426 poollen = strlen(poolname); 3427 for (pair = nvlist_next_nvpair(snaps, NULL); pair != NULL; 3428 pair = nvlist_next_nvpair(snaps, pair)) { 3429 const char *name = nvpair_name(pair); 3430 const char *cp = strchr(name, '@'); 3431 3432 /* 3433 * The snap name must contain an @, and the part after it must 3434 * contain only valid characters. 3435 */ 3436 if (cp == NULL || 3437 zfs_component_namecheck(cp + 1, NULL, NULL) != 0) 3438 return (SET_ERROR(EINVAL)); 3439 3440 /* 3441 * The snap must be in the specified pool. 3442 */ 3443 if (strncmp(name, poolname, poollen) != 0 || 3444 (name[poollen] != '/' && name[poollen] != '@')) 3445 return (SET_ERROR(EXDEV)); 3446 3447 /* This must be the only snap of this fs. */ 3448 for (nvpair_t *pair2 = nvlist_next_nvpair(snaps, pair); 3449 pair2 != NULL; pair2 = nvlist_next_nvpair(snaps, pair2)) { 3450 if (strncmp(name, nvpair_name(pair2), cp - name + 1) 3451 == 0) { 3452 return (SET_ERROR(EXDEV)); 3453 } 3454 } 3455 } 3456 3457 error = dsl_dataset_snapshot(snaps, props, outnvl); 3458 return (error); 3459 } 3460 3461 /* 3462 * innvl: "message" -> string 3463 */ 3464 /* ARGSUSED */ 3465 static int 3466 zfs_ioc_log_history(const char *unused, nvlist_t *innvl, nvlist_t *outnvl) 3467 { 3468 char *message; 3469 spa_t *spa; 3470 int error; 3471 char *poolname; 3472 3473 /* 3474 * The poolname in the ioctl is not set, we get it from the TSD, 3475 * which was set at the end of the last successful ioctl that allows 3476 * logging. The secpolicy func already checked that it is set. 3477 * Only one log ioctl is allowed after each successful ioctl, so 3478 * we clear the TSD here. 3479 */ 3480 poolname = tsd_get(zfs_allow_log_key); 3481 (void) tsd_set(zfs_allow_log_key, NULL); 3482 error = spa_open(poolname, &spa, FTAG); 3483 strfree(poolname); 3484 if (error != 0) 3485 return (error); 3486 3487 if (nvlist_lookup_string(innvl, "message", &message) != 0) { 3488 spa_close(spa, FTAG); 3489 return (SET_ERROR(EINVAL)); 3490 } 3491 3492 if (spa_version(spa) < SPA_VERSION_ZPOOL_HISTORY) { 3493 spa_close(spa, FTAG); 3494 return (SET_ERROR(ENOTSUP)); 3495 } 3496 3497 error = spa_history_log(spa, message); 3498 spa_close(spa, FTAG); 3499 return (error); 3500 } 3501 3502 /* 3503 * The dp_config_rwlock must not be held when calling this, because the 3504 * unmount may need to write out data. 3505 * 3506 * This function is best-effort. Callers must deal gracefully if it 3507 * remains mounted (or is remounted after this call). 3508 * 3509 * Returns 0 if the argument is not a snapshot, or it is not currently a 3510 * filesystem, or we were able to unmount it. Returns error code otherwise. 3511 */ 3512 void 3513 zfs_unmount_snap(const char *snapname) 3514 { 3515 vfs_t *vfsp = NULL; 3516 zfsvfs_t *zfsvfs = NULL; 3517 3518 if (strchr(snapname, '@') == NULL) 3519 return; 3520 3521 int err = getzfsvfs(snapname, &zfsvfs); 3522 if (err != 0) { 3523 ASSERT3P(zfsvfs, ==, NULL); 3524 return; 3525 } 3526 vfsp = zfsvfs->z_vfs; 3527 3528 ASSERT(!dsl_pool_config_held(dmu_objset_pool(zfsvfs->z_os))); 3529 3530 err = vn_vfswlock(vfsp->vfs_vnodecovered); 3531 VFS_RELE(vfsp); 3532 if (err != 0) 3533 return; 3534 3535 /* 3536 * Always force the unmount for snapshots. 3537 */ 3538 (void) dounmount(vfsp, MS_FORCE, kcred); 3539 } 3540 3541 /* ARGSUSED */ 3542 static int 3543 zfs_unmount_snap_cb(const char *snapname, void *arg) 3544 { 3545 zfs_unmount_snap(snapname); 3546 return (0); 3547 } 3548 3549 /* 3550 * When a clone is destroyed, its origin may also need to be destroyed, 3551 * in which case it must be unmounted. This routine will do that unmount 3552 * if necessary. 3553 */ 3554 void 3555 zfs_destroy_unmount_origin(const char *fsname) 3556 { 3557 int error; 3558 objset_t *os; 3559 dsl_dataset_t *ds; 3560 3561 error = dmu_objset_hold(fsname, FTAG, &os); 3562 if (error != 0) 3563 return; 3564 ds = dmu_objset_ds(os); 3565 if (dsl_dir_is_clone(ds->ds_dir) && DS_IS_DEFER_DESTROY(ds->ds_prev)) { 3566 char originname[ZFS_MAX_DATASET_NAME_LEN]; 3567 dsl_dataset_name(ds->ds_prev, originname); 3568 dmu_objset_rele(os, FTAG); 3569 zfs_unmount_snap(originname); 3570 } else { 3571 dmu_objset_rele(os, FTAG); 3572 } 3573 } 3574 3575 /* 3576 * innvl: { 3577 * "snaps" -> { snapshot1, snapshot2 } 3578 * (optional boolean) "defer" 3579 * } 3580 * 3581 * outnvl: snapshot -> error code (int32) 3582 * 3583 */ 3584 /* ARGSUSED */ 3585 static int 3586 zfs_ioc_destroy_snaps(const char *poolname, nvlist_t *innvl, nvlist_t *outnvl) 3587 { 3588 nvlist_t *snaps; 3589 nvpair_t *pair; 3590 boolean_t defer; 3591 3592 if (nvlist_lookup_nvlist(innvl, "snaps", &snaps) != 0) 3593 return (SET_ERROR(EINVAL)); 3594 defer = nvlist_exists(innvl, "defer"); 3595 3596 for (pair = nvlist_next_nvpair(snaps, NULL); pair != NULL; 3597 pair = nvlist_next_nvpair(snaps, pair)) { 3598 zfs_unmount_snap(nvpair_name(pair)); 3599 } 3600 3601 return (dsl_destroy_snapshots_nvl(snaps, defer, outnvl)); 3602 } 3603 3604 /* 3605 * Create bookmarks. Bookmark names are of the form <fs>#<bmark>. 3606 * All bookmarks must be in the same pool. 3607 * 3608 * innvl: { 3609 * bookmark1 -> snapshot1, bookmark2 -> snapshot2 3610 * } 3611 * 3612 * outnvl: bookmark -> error code (int32) 3613 * 3614 */ 3615 /* ARGSUSED */ 3616 static int 3617 zfs_ioc_bookmark(const char *poolname, nvlist_t *innvl, nvlist_t *outnvl) 3618 { 3619 for (nvpair_t *pair = nvlist_next_nvpair(innvl, NULL); 3620 pair != NULL; pair = nvlist_next_nvpair(innvl, pair)) { 3621 char *snap_name; 3622 3623 /* 3624 * Verify the snapshot argument. 3625 */ 3626 if (nvpair_value_string(pair, &snap_name) != 0) 3627 return (SET_ERROR(EINVAL)); 3628 3629 3630 /* Verify that the keys (bookmarks) are unique */ 3631 for (nvpair_t *pair2 = nvlist_next_nvpair(innvl, pair); 3632 pair2 != NULL; pair2 = nvlist_next_nvpair(innvl, pair2)) { 3633 if (strcmp(nvpair_name(pair), nvpair_name(pair2)) == 0) 3634 return (SET_ERROR(EINVAL)); 3635 } 3636 } 3637 3638 return (dsl_bookmark_create(innvl, outnvl)); 3639 } 3640 3641 /* 3642 * innvl: { 3643 * property 1, property 2, ... 3644 * } 3645 * 3646 * outnvl: { 3647 * bookmark name 1 -> { property 1, property 2, ... }, 3648 * bookmark name 2 -> { property 1, property 2, ... } 3649 * } 3650 * 3651 */ 3652 static int 3653 zfs_ioc_get_bookmarks(const char *fsname, nvlist_t *innvl, nvlist_t *outnvl) 3654 { 3655 return (dsl_get_bookmarks(fsname, innvl, outnvl)); 3656 } 3657 3658 /* 3659 * innvl: { 3660 * bookmark name 1, bookmark name 2 3661 * } 3662 * 3663 * outnvl: bookmark -> error code (int32) 3664 * 3665 */ 3666 static int 3667 zfs_ioc_destroy_bookmarks(const char *poolname, nvlist_t *innvl, 3668 nvlist_t *outnvl) 3669 { 3670 int error, poollen; 3671 3672 poollen = strlen(poolname); 3673 for (nvpair_t *pair = nvlist_next_nvpair(innvl, NULL); 3674 pair != NULL; pair = nvlist_next_nvpair(innvl, pair)) { 3675 const char *name = nvpair_name(pair); 3676 const char *cp = strchr(name, '#'); 3677 3678 /* 3679 * The bookmark name must contain an #, and the part after it 3680 * must contain only valid characters. 3681 */ 3682 if (cp == NULL || 3683 zfs_component_namecheck(cp + 1, NULL, NULL) != 0) 3684 return (SET_ERROR(EINVAL)); 3685 3686 /* 3687 * The bookmark must be in the specified pool. 3688 */ 3689 if (strncmp(name, poolname, poollen) != 0 || 3690 (name[poollen] != '/' && name[poollen] != '#')) 3691 return (SET_ERROR(EXDEV)); 3692 } 3693 3694 error = dsl_bookmark_destroy(innvl, outnvl); 3695 return (error); 3696 } 3697 3698 static int 3699 zfs_ioc_channel_program(const char *poolname, nvlist_t *innvl, 3700 nvlist_t *outnvl) 3701 { 3702 char *program; 3703 uint64_t instrlimit, memlimit; 3704 boolean_t sync_flag; 3705 nvpair_t *nvarg = NULL; 3706 3707 if (0 != nvlist_lookup_string(innvl, ZCP_ARG_PROGRAM, &program)) { 3708 return (EINVAL); 3709 } 3710 if (0 != nvlist_lookup_boolean_value(innvl, ZCP_ARG_SYNC, &sync_flag)) { 3711 sync_flag = B_TRUE; 3712 } 3713 if (0 != nvlist_lookup_uint64(innvl, ZCP_ARG_INSTRLIMIT, &instrlimit)) { 3714 instrlimit = ZCP_DEFAULT_INSTRLIMIT; 3715 } 3716 if (0 != nvlist_lookup_uint64(innvl, ZCP_ARG_MEMLIMIT, &memlimit)) { 3717 memlimit = ZCP_DEFAULT_MEMLIMIT; 3718 } 3719 if (0 != nvlist_lookup_nvpair(innvl, ZCP_ARG_ARGLIST, &nvarg)) { 3720 return (EINVAL); 3721 } 3722 3723 if (instrlimit == 0 || instrlimit > zfs_lua_max_instrlimit) 3724 return (EINVAL); 3725 if (memlimit == 0 || memlimit > zfs_lua_max_memlimit) 3726 return (EINVAL); 3727 3728 return (zcp_eval(poolname, program, sync_flag, instrlimit, memlimit, 3729 nvarg, outnvl)); 3730 } 3731 3732 /* 3733 * innvl: unused 3734 * outnvl: empty 3735 */ 3736 /* ARGSUSED */ 3737 static int 3738 zfs_ioc_pool_checkpoint(const char *poolname, nvlist_t *innvl, nvlist_t *outnvl) 3739 { 3740 return (spa_checkpoint(poolname)); 3741 } 3742 3743 /* 3744 * innvl: unused 3745 * outnvl: empty 3746 */ 3747 /* ARGSUSED */ 3748 static int 3749 zfs_ioc_pool_discard_checkpoint(const char *poolname, nvlist_t *innvl, 3750 nvlist_t *outnvl) 3751 { 3752 return (spa_checkpoint_discard(poolname)); 3753 } 3754 3755 /* 3756 * inputs: 3757 * zc_name name of dataset to destroy 3758 * zc_defer_destroy mark for deferred destroy 3759 * 3760 * outputs: none 3761 */ 3762 static int 3763 zfs_ioc_destroy(zfs_cmd_t *zc) 3764 { 3765 objset_t *os; 3766 dmu_objset_type_t ost; 3767 int err; 3768 3769 err = dmu_objset_hold(zc->zc_name, FTAG, &os); 3770 if (err != 0) 3771 return (err); 3772 ost = dmu_objset_type(os); 3773 dmu_objset_rele(os, FTAG); 3774 3775 if (ost == DMU_OST_ZFS) 3776 zfs_unmount_snap(zc->zc_name); 3777 3778 if (strchr(zc->zc_name, '@')) 3779 err = dsl_destroy_snapshot(zc->zc_name, zc->zc_defer_destroy); 3780 else 3781 err = dsl_destroy_head(zc->zc_name); 3782 if (ost == DMU_OST_ZVOL && err == 0) 3783 (void) zvol_remove_minor(zc->zc_name); 3784 return (err); 3785 } 3786 3787 /* 3788 * innvl: { 3789 * vdevs: { 3790 * guid 1, guid 2, ... 3791 * }, 3792 * func: POOL_INITIALIZE_{CANCEL|DO|SUSPEND} 3793 * } 3794 * 3795 * outnvl: { 3796 * [func: EINVAL (if provided command type didn't make sense)], 3797 * [vdevs: { 3798 * guid1: errno, (see function body for possible errnos) 3799 * ... 3800 * }] 3801 * } 3802 * 3803 */ 3804 static int 3805 zfs_ioc_pool_initialize(const char *poolname, nvlist_t *innvl, nvlist_t *outnvl) 3806 { 3807 spa_t *spa; 3808 int error; 3809 3810 error = spa_open(poolname, &spa, FTAG); 3811 if (error != 0) 3812 return (error); 3813 3814 uint64_t cmd_type; 3815 if (nvlist_lookup_uint64(innvl, ZPOOL_INITIALIZE_COMMAND, 3816 &cmd_type) != 0) { 3817 spa_close(spa, FTAG); 3818 return (SET_ERROR(EINVAL)); 3819 } 3820 if (!(cmd_type == POOL_INITIALIZE_CANCEL || 3821 cmd_type == POOL_INITIALIZE_DO || 3822 cmd_type == POOL_INITIALIZE_SUSPEND)) { 3823 spa_close(spa, FTAG); 3824 return (SET_ERROR(EINVAL)); 3825 } 3826 3827 nvlist_t *vdev_guids; 3828 if (nvlist_lookup_nvlist(innvl, ZPOOL_INITIALIZE_VDEVS, 3829 &vdev_guids) != 0) { 3830 spa_close(spa, FTAG); 3831 return (SET_ERROR(EINVAL)); 3832 } 3833 3834 nvlist_t *vdev_errlist = fnvlist_alloc(); 3835 int total_errors = 0; 3836 3837 for (nvpair_t *pair = nvlist_next_nvpair(vdev_guids, NULL); 3838 pair != NULL; pair = nvlist_next_nvpair(vdev_guids, pair)) { 3839 uint64_t vdev_guid = fnvpair_value_uint64(pair); 3840 3841 error = spa_vdev_initialize(spa, vdev_guid, cmd_type); 3842 if (error != 0) { 3843 char guid_as_str[MAXNAMELEN]; 3844 3845 (void) snprintf(guid_as_str, sizeof (guid_as_str), 3846 "%llu", (unsigned long long)vdev_guid); 3847 fnvlist_add_int64(vdev_errlist, guid_as_str, error); 3848 total_errors++; 3849 } 3850 } 3851 if (fnvlist_size(vdev_errlist) > 0) { 3852 fnvlist_add_nvlist(outnvl, ZPOOL_INITIALIZE_VDEVS, 3853 vdev_errlist); 3854 } 3855 fnvlist_free(vdev_errlist); 3856 3857 spa_close(spa, FTAG); 3858 return (total_errors > 0 ? EINVAL : 0); 3859 } 3860 3861 /* 3862 * fsname is name of dataset to rollback (to most recent snapshot) 3863 * 3864 * innvl may contain name of expected target snapshot 3865 * 3866 * outnvl: "target" -> name of most recent snapshot 3867 * } 3868 */ 3869 /* ARGSUSED */ 3870 static int 3871 zfs_ioc_rollback(const char *fsname, nvlist_t *innvl, nvlist_t *outnvl) 3872 { 3873 zfsvfs_t *zfsvfs; 3874 char *target = NULL; 3875 int error; 3876 3877 (void) nvlist_lookup_string(innvl, "target", &target); 3878 if (target != NULL) { 3879 const char *cp = strchr(target, '@'); 3880 3881 /* 3882 * The snap name must contain an @, and the part after it must 3883 * contain only valid characters. 3884 */ 3885 if (cp == NULL || 3886 zfs_component_namecheck(cp + 1, NULL, NULL) != 0) 3887 return (SET_ERROR(EINVAL)); 3888 } 3889 3890 if (getzfsvfs(fsname, &zfsvfs) == 0) { 3891 dsl_dataset_t *ds; 3892 3893 ds = dmu_objset_ds(zfsvfs->z_os); 3894 error = zfs_suspend_fs(zfsvfs); 3895 if (error == 0) { 3896 int resume_err; 3897 3898 error = dsl_dataset_rollback(fsname, target, zfsvfs, 3899 outnvl); 3900 resume_err = zfs_resume_fs(zfsvfs, ds); 3901 error = error ? error : resume_err; 3902 } 3903 VFS_RELE(zfsvfs->z_vfs); 3904 } else { 3905 error = dsl_dataset_rollback(fsname, target, NULL, outnvl); 3906 } 3907 return (error); 3908 } 3909 3910 static int 3911 recursive_unmount(const char *fsname, void *arg) 3912 { 3913 const char *snapname = arg; 3914 char fullname[ZFS_MAX_DATASET_NAME_LEN]; 3915 3916 (void) snprintf(fullname, sizeof (fullname), "%s@%s", fsname, snapname); 3917 zfs_unmount_snap(fullname); 3918 3919 return (0); 3920 } 3921 3922 /* 3923 * inputs: 3924 * zc_name old name of dataset 3925 * zc_value new name of dataset 3926 * zc_cookie recursive flag (only valid for snapshots) 3927 * 3928 * outputs: none 3929 */ 3930 static int 3931 zfs_ioc_rename(zfs_cmd_t *zc) 3932 { 3933 objset_t *os; 3934 dmu_objset_type_t ost; 3935 boolean_t recursive = zc->zc_cookie & 1; 3936 char *at; 3937 int err; 3938 3939 /* "zfs rename" from and to ...%recv datasets should both fail */ 3940 zc->zc_name[sizeof (zc->zc_name) - 1] = '\0'; 3941 zc->zc_value[sizeof (zc->zc_value) - 1] = '\0'; 3942 if (dataset_namecheck(zc->zc_name, NULL, NULL) != 0 || 3943 dataset_namecheck(zc->zc_value, NULL, NULL) != 0 || 3944 strchr(zc->zc_name, '%') || strchr(zc->zc_value, '%')) 3945 return (SET_ERROR(EINVAL)); 3946 3947 err = dmu_objset_hold(zc->zc_name, FTAG, &os); 3948 if (err != 0) 3949 return (err); 3950 ost = dmu_objset_type(os); 3951 dmu_objset_rele(os, FTAG); 3952 3953 at = strchr(zc->zc_name, '@'); 3954 if (at != NULL) { 3955 /* snaps must be in same fs */ 3956 int error; 3957 3958 if (strncmp(zc->zc_name, zc->zc_value, at - zc->zc_name + 1)) 3959 return (SET_ERROR(EXDEV)); 3960 *at = '\0'; 3961 if (ost == DMU_OST_ZFS) { 3962 error = dmu_objset_find(zc->zc_name, 3963 recursive_unmount, at + 1, 3964 recursive ? DS_FIND_CHILDREN : 0); 3965 if (error != 0) { 3966 *at = '@'; 3967 return (error); 3968 } 3969 } 3970 error = dsl_dataset_rename_snapshot(zc->zc_name, 3971 at + 1, strchr(zc->zc_value, '@') + 1, recursive); 3972 *at = '@'; 3973 3974 return (error); 3975 } else { 3976 if (ost == DMU_OST_ZVOL) 3977 (void) zvol_remove_minor(zc->zc_name); 3978 return (dsl_dir_rename(zc->zc_name, zc->zc_value)); 3979 } 3980 } 3981 3982 static int 3983 zfs_check_settable(const char *dsname, nvpair_t *pair, cred_t *cr) 3984 { 3985 const char *propname = nvpair_name(pair); 3986 boolean_t issnap = (strchr(dsname, '@') != NULL); 3987 zfs_prop_t prop = zfs_name_to_prop(propname); 3988 uint64_t intval; 3989 int err; 3990 3991 if (prop == ZPROP_INVAL) { 3992 if (zfs_prop_user(propname)) { 3993 if (err = zfs_secpolicy_write_perms(dsname, 3994 ZFS_DELEG_PERM_USERPROP, cr)) 3995 return (err); 3996 return (0); 3997 } 3998 3999 if (!issnap && zfs_prop_userquota(propname)) { 4000 const char *perm = NULL; 4001 const char *uq_prefix = 4002 zfs_userquota_prop_prefixes[ZFS_PROP_USERQUOTA]; 4003 const char *gq_prefix = 4004 zfs_userquota_prop_prefixes[ZFS_PROP_GROUPQUOTA]; 4005 4006 if (strncmp(propname, uq_prefix, 4007 strlen(uq_prefix)) == 0) { 4008 perm = ZFS_DELEG_PERM_USERQUOTA; 4009 } else if (strncmp(propname, gq_prefix, 4010 strlen(gq_prefix)) == 0) { 4011 perm = ZFS_DELEG_PERM_GROUPQUOTA; 4012 } else { 4013 /* USERUSED and GROUPUSED are read-only */ 4014 return (SET_ERROR(EINVAL)); 4015 } 4016 4017 if (err = zfs_secpolicy_write_perms(dsname, perm, cr)) 4018 return (err); 4019 return (0); 4020 } 4021 4022 return (SET_ERROR(EINVAL)); 4023 } 4024 4025 if (issnap) 4026 return (SET_ERROR(EINVAL)); 4027 4028 if (nvpair_type(pair) == DATA_TYPE_NVLIST) { 4029 /* 4030 * dsl_prop_get_all_impl() returns properties in this 4031 * format. 4032 */ 4033 nvlist_t *attrs; 4034 VERIFY(nvpair_value_nvlist(pair, &attrs) == 0); 4035 VERIFY(nvlist_lookup_nvpair(attrs, ZPROP_VALUE, 4036 &pair) == 0); 4037 } 4038 4039 /* 4040 * Check that this value is valid for this pool version 4041 */ 4042 switch (prop) { 4043 case ZFS_PROP_COMPRESSION: 4044 /* 4045 * If the user specified gzip compression, make sure 4046 * the SPA supports it. We ignore any errors here since 4047 * we'll catch them later. 4048 */ 4049 if (nvpair_value_uint64(pair, &intval) == 0) { 4050 if (intval >= ZIO_COMPRESS_GZIP_1 && 4051 intval <= ZIO_COMPRESS_GZIP_9 && 4052 zfs_earlier_version(dsname, 4053 SPA_VERSION_GZIP_COMPRESSION)) { 4054 return (SET_ERROR(ENOTSUP)); 4055 } 4056 4057 if (intval == ZIO_COMPRESS_ZLE && 4058 zfs_earlier_version(dsname, 4059 SPA_VERSION_ZLE_COMPRESSION)) 4060 return (SET_ERROR(ENOTSUP)); 4061 4062 if (intval == ZIO_COMPRESS_LZ4) { 4063 spa_t *spa; 4064 4065 if ((err = spa_open(dsname, &spa, FTAG)) != 0) 4066 return (err); 4067 4068 if (!spa_feature_is_enabled(spa, 4069 SPA_FEATURE_LZ4_COMPRESS)) { 4070 spa_close(spa, FTAG); 4071 return (SET_ERROR(ENOTSUP)); 4072 } 4073 spa_close(spa, FTAG); 4074 } 4075 4076 /* 4077 * If this is a bootable dataset then 4078 * verify that the compression algorithm 4079 * is supported for booting. We must return 4080 * something other than ENOTSUP since it 4081 * implies a downrev pool version. 4082 */ 4083 if (zfs_is_bootfs(dsname) && 4084 !BOOTFS_COMPRESS_VALID(intval)) { 4085 return (SET_ERROR(ERANGE)); 4086 } 4087 } 4088 break; 4089 4090 case ZFS_PROP_COPIES: 4091 if (zfs_earlier_version(dsname, SPA_VERSION_DITTO_BLOCKS)) 4092 return (SET_ERROR(ENOTSUP)); 4093 break; 4094 4095 case ZFS_PROP_RECORDSIZE: 4096 /* Record sizes above 128k need the feature to be enabled */ 4097 if (nvpair_value_uint64(pair, &intval) == 0 && 4098 intval > SPA_OLD_MAXBLOCKSIZE) { 4099 spa_t *spa; 4100 4101 /* 4102 * We don't allow setting the property above 1MB, 4103 * unless the tunable has been changed. 4104 */ 4105 if (intval > zfs_max_recordsize || 4106 intval > SPA_MAXBLOCKSIZE) 4107 return (SET_ERROR(ERANGE)); 4108 4109 if ((err = spa_open(dsname, &spa, FTAG)) != 0) 4110 return (err); 4111 4112 if (!spa_feature_is_enabled(spa, 4113 SPA_FEATURE_LARGE_BLOCKS)) { 4114 spa_close(spa, FTAG); 4115 return (SET_ERROR(ENOTSUP)); 4116 } 4117 spa_close(spa, FTAG); 4118 } 4119 break; 4120 4121 case ZFS_PROP_DNODESIZE: 4122 /* Dnode sizes above 512 need the feature to be enabled */ 4123 if (nvpair_value_uint64(pair, &intval) == 0 && 4124 intval != ZFS_DNSIZE_LEGACY) { 4125 spa_t *spa; 4126 4127 if ((err = spa_open(dsname, &spa, FTAG)) != 0) 4128 return (err); 4129 4130 if (!spa_feature_is_enabled(spa, 4131 SPA_FEATURE_LARGE_DNODE)) { 4132 spa_close(spa, FTAG); 4133 return (SET_ERROR(ENOTSUP)); 4134 } 4135 spa_close(spa, FTAG); 4136 } 4137 break; 4138 4139 case ZFS_PROP_SPECIAL_SMALL_BLOCKS: 4140 /* 4141 * This property could require the allocation classes 4142 * feature to be active for setting, however we allow 4143 * it so that tests of settable properties succeed. 4144 * The CLI will issue a warning in this case. 4145 */ 4146 break; 4147 4148 case ZFS_PROP_SHARESMB: 4149 if (zpl_earlier_version(dsname, ZPL_VERSION_FUID)) 4150 return (SET_ERROR(ENOTSUP)); 4151 break; 4152 4153 case ZFS_PROP_ACLINHERIT: 4154 if (nvpair_type(pair) == DATA_TYPE_UINT64 && 4155 nvpair_value_uint64(pair, &intval) == 0) { 4156 if (intval == ZFS_ACL_PASSTHROUGH_X && 4157 zfs_earlier_version(dsname, 4158 SPA_VERSION_PASSTHROUGH_X)) 4159 return (SET_ERROR(ENOTSUP)); 4160 } 4161 break; 4162 4163 case ZFS_PROP_CHECKSUM: 4164 case ZFS_PROP_DEDUP: 4165 { 4166 spa_feature_t feature; 4167 spa_t *spa; 4168 4169 /* dedup feature version checks */ 4170 if (prop == ZFS_PROP_DEDUP && 4171 zfs_earlier_version(dsname, SPA_VERSION_DEDUP)) 4172 return (SET_ERROR(ENOTSUP)); 4173 4174 if (nvpair_value_uint64(pair, &intval) != 0) 4175 return (SET_ERROR(EINVAL)); 4176 4177 /* check prop value is enabled in features */ 4178 feature = zio_checksum_to_feature(intval & ZIO_CHECKSUM_MASK); 4179 if (feature == SPA_FEATURE_NONE) 4180 break; 4181 4182 if ((err = spa_open(dsname, &spa, FTAG)) != 0) 4183 return (err); 4184 4185 if (!spa_feature_is_enabled(spa, feature)) { 4186 spa_close(spa, FTAG); 4187 return (SET_ERROR(ENOTSUP)); 4188 } 4189 spa_close(spa, FTAG); 4190 break; 4191 } 4192 } 4193 4194 return (zfs_secpolicy_setprop(dsname, prop, pair, CRED())); 4195 } 4196 4197 /* 4198 * Checks for a race condition to make sure we don't increment a feature flag 4199 * multiple times. 4200 */ 4201 static int 4202 zfs_prop_activate_feature_check(void *arg, dmu_tx_t *tx) 4203 { 4204 spa_t *spa = dmu_tx_pool(tx)->dp_spa; 4205 spa_feature_t *featurep = arg; 4206 4207 if (!spa_feature_is_active(spa, *featurep)) 4208 return (0); 4209 else 4210 return (SET_ERROR(EBUSY)); 4211 } 4212 4213 /* 4214 * The callback invoked on feature activation in the sync task caused by 4215 * zfs_prop_activate_feature. 4216 */ 4217 static void 4218 zfs_prop_activate_feature_sync(void *arg, dmu_tx_t *tx) 4219 { 4220 spa_t *spa = dmu_tx_pool(tx)->dp_spa; 4221 spa_feature_t *featurep = arg; 4222 4223 spa_feature_incr(spa, *featurep, tx); 4224 } 4225 4226 /* 4227 * Activates a feature on a pool in response to a property setting. This 4228 * creates a new sync task which modifies the pool to reflect the feature 4229 * as being active. 4230 */ 4231 static int 4232 zfs_prop_activate_feature(spa_t *spa, spa_feature_t feature) 4233 { 4234 int err; 4235 4236 /* EBUSY here indicates that the feature is already active */ 4237 err = dsl_sync_task(spa_name(spa), 4238 zfs_prop_activate_feature_check, zfs_prop_activate_feature_sync, 4239 &feature, 2, ZFS_SPACE_CHECK_RESERVED); 4240 4241 if (err != 0 && err != EBUSY) 4242 return (err); 4243 else 4244 return (0); 4245 } 4246 4247 /* 4248 * Removes properties from the given props list that fail permission checks 4249 * needed to clear them and to restore them in case of a receive error. For each 4250 * property, make sure we have both set and inherit permissions. 4251 * 4252 * Returns the first error encountered if any permission checks fail. If the 4253 * caller provides a non-NULL errlist, it also gives the complete list of names 4254 * of all the properties that failed a permission check along with the 4255 * corresponding error numbers. The caller is responsible for freeing the 4256 * returned errlist. 4257 * 4258 * If every property checks out successfully, zero is returned and the list 4259 * pointed at by errlist is NULL. 4260 */ 4261 static int 4262 zfs_check_clearable(char *dataset, nvlist_t *props, nvlist_t **errlist) 4263 { 4264 zfs_cmd_t *zc; 4265 nvpair_t *pair, *next_pair; 4266 nvlist_t *errors; 4267 int err, rv = 0; 4268 4269 if (props == NULL) 4270 return (0); 4271 4272 VERIFY(nvlist_alloc(&errors, NV_UNIQUE_NAME, KM_SLEEP) == 0); 4273 4274 zc = kmem_alloc(sizeof (zfs_cmd_t), KM_SLEEP); 4275 (void) strcpy(zc->zc_name, dataset); 4276 pair = nvlist_next_nvpair(props, NULL); 4277 while (pair != NULL) { 4278 next_pair = nvlist_next_nvpair(props, pair); 4279 4280 (void) strcpy(zc->zc_value, nvpair_name(pair)); 4281 if ((err = zfs_check_settable(dataset, pair, CRED())) != 0 || 4282 (err = zfs_secpolicy_inherit_prop(zc, NULL, CRED())) != 0) { 4283 VERIFY(nvlist_remove_nvpair(props, pair) == 0); 4284 VERIFY(nvlist_add_int32(errors, 4285 zc->zc_value, err) == 0); 4286 } 4287 pair = next_pair; 4288 } 4289 kmem_free(zc, sizeof (zfs_cmd_t)); 4290 4291 if ((pair = nvlist_next_nvpair(errors, NULL)) == NULL) { 4292 nvlist_free(errors); 4293 errors = NULL; 4294 } else { 4295 VERIFY(nvpair_value_int32(pair, &rv) == 0); 4296 } 4297 4298 if (errlist == NULL) 4299 nvlist_free(errors); 4300 else 4301 *errlist = errors; 4302 4303 return (rv); 4304 } 4305 4306 static boolean_t 4307 propval_equals(nvpair_t *p1, nvpair_t *p2) 4308 { 4309 if (nvpair_type(p1) == DATA_TYPE_NVLIST) { 4310 /* dsl_prop_get_all_impl() format */ 4311 nvlist_t *attrs; 4312 VERIFY(nvpair_value_nvlist(p1, &attrs) == 0); 4313 VERIFY(nvlist_lookup_nvpair(attrs, ZPROP_VALUE, 4314 &p1) == 0); 4315 } 4316 4317 if (nvpair_type(p2) == DATA_TYPE_NVLIST) { 4318 nvlist_t *attrs; 4319 VERIFY(nvpair_value_nvlist(p2, &attrs) == 0); 4320 VERIFY(nvlist_lookup_nvpair(attrs, ZPROP_VALUE, 4321 &p2) == 0); 4322 } 4323 4324 if (nvpair_type(p1) != nvpair_type(p2)) 4325 return (B_FALSE); 4326 4327 if (nvpair_type(p1) == DATA_TYPE_STRING) { 4328 char *valstr1, *valstr2; 4329 4330 VERIFY(nvpair_value_string(p1, (char **)&valstr1) == 0); 4331 VERIFY(nvpair_value_string(p2, (char **)&valstr2) == 0); 4332 return (strcmp(valstr1, valstr2) == 0); 4333 } else { 4334 uint64_t intval1, intval2; 4335 4336 VERIFY(nvpair_value_uint64(p1, &intval1) == 0); 4337 VERIFY(nvpair_value_uint64(p2, &intval2) == 0); 4338 return (intval1 == intval2); 4339 } 4340 } 4341 4342 /* 4343 * Remove properties from props if they are not going to change (as determined 4344 * by comparison with origprops). Remove them from origprops as well, since we 4345 * do not need to clear or restore properties that won't change. 4346 */ 4347 static void 4348 props_reduce(nvlist_t *props, nvlist_t *origprops) 4349 { 4350 nvpair_t *pair, *next_pair; 4351 4352 if (origprops == NULL) 4353 return; /* all props need to be received */ 4354 4355 pair = nvlist_next_nvpair(props, NULL); 4356 while (pair != NULL) { 4357 const char *propname = nvpair_name(pair); 4358 nvpair_t *match; 4359 4360 next_pair = nvlist_next_nvpair(props, pair); 4361 4362 if ((nvlist_lookup_nvpair(origprops, propname, 4363 &match) != 0) || !propval_equals(pair, match)) 4364 goto next; /* need to set received value */ 4365 4366 /* don't clear the existing received value */ 4367 (void) nvlist_remove_nvpair(origprops, match); 4368 /* don't bother receiving the property */ 4369 (void) nvlist_remove_nvpair(props, pair); 4370 next: 4371 pair = next_pair; 4372 } 4373 } 4374 4375 /* 4376 * Extract properties that cannot be set PRIOR to the receipt of a dataset. 4377 * For example, refquota cannot be set until after the receipt of a dataset, 4378 * because in replication streams, an older/earlier snapshot may exceed the 4379 * refquota. We want to receive the older/earlier snapshot, but setting 4380 * refquota pre-receipt will set the dsl's ACTUAL quota, which will prevent 4381 * the older/earlier snapshot from being received (with EDQUOT). 4382 * 4383 * The ZFS test "zfs_receive_011_pos" demonstrates such a scenario. 4384 * 4385 * libzfs will need to be judicious handling errors encountered by props 4386 * extracted by this function. 4387 */ 4388 static nvlist_t * 4389 extract_delay_props(nvlist_t *props) 4390 { 4391 nvlist_t *delayprops; 4392 nvpair_t *nvp, *tmp; 4393 static const zfs_prop_t delayable[] = { 4394 ZFS_PROP_REFQUOTA, 4395 ZFS_PROP_KEYLOCATION, 4396 0 4397 }; 4398 int i; 4399 4400 VERIFY(nvlist_alloc(&delayprops, NV_UNIQUE_NAME, KM_SLEEP) == 0); 4401 4402 for (nvp = nvlist_next_nvpair(props, NULL); nvp != NULL; 4403 nvp = nvlist_next_nvpair(props, nvp)) { 4404 /* 4405 * strcmp() is safe because zfs_prop_to_name() always returns 4406 * a bounded string. 4407 */ 4408 for (i = 0; delayable[i] != 0; i++) { 4409 if (strcmp(zfs_prop_to_name(delayable[i]), 4410 nvpair_name(nvp)) == 0) { 4411 break; 4412 } 4413 } 4414 if (delayable[i] != 0) { 4415 tmp = nvlist_prev_nvpair(props, nvp); 4416 VERIFY(nvlist_add_nvpair(delayprops, nvp) == 0); 4417 VERIFY(nvlist_remove_nvpair(props, nvp) == 0); 4418 nvp = tmp; 4419 } 4420 } 4421 4422 if (nvlist_empty(delayprops)) { 4423 nvlist_free(delayprops); 4424 delayprops = NULL; 4425 } 4426 return (delayprops); 4427 } 4428 4429 #ifdef DEBUG 4430 static boolean_t zfs_ioc_recv_inject_err; 4431 #endif 4432 4433 /* 4434 * inputs: 4435 * zc_name name of containing filesystem 4436 * zc_nvlist_src{_size} nvlist of properties to apply 4437 * zc_value name of snapshot to create 4438 * zc_string name of clone origin (if DRR_FLAG_CLONE) 4439 * zc_cookie file descriptor to recv from 4440 * zc_begin_record the BEGIN record of the stream (not byteswapped) 4441 * zc_guid force flag 4442 * zc_cleanup_fd cleanup-on-exit file descriptor 4443 * zc_action_handle handle for this guid/ds mapping (or zero on first call) 4444 * zc_resumable if data is incomplete assume sender will resume 4445 * 4446 * outputs: 4447 * zc_cookie number of bytes read 4448 * zc_nvlist_dst{_size} error for each unapplied received property 4449 * zc_obj zprop_errflags_t 4450 * zc_action_handle handle for this guid/ds mapping 4451 */ 4452 static int 4453 zfs_ioc_recv(zfs_cmd_t *zc) 4454 { 4455 file_t *fp; 4456 dmu_recv_cookie_t drc; 4457 boolean_t force = (boolean_t)zc->zc_guid; 4458 int fd; 4459 int error = 0; 4460 int props_error = 0; 4461 nvlist_t *errors; 4462 offset_t off; 4463 nvlist_t *props = NULL; /* sent properties */ 4464 nvlist_t *origprops = NULL; /* existing properties */ 4465 nvlist_t *delayprops = NULL; /* sent properties applied post-receive */ 4466 char *origin = NULL; 4467 char *tosnap; 4468 char tofs[ZFS_MAX_DATASET_NAME_LEN]; 4469 boolean_t first_recvd_props = B_FALSE; 4470 4471 if (dataset_namecheck(zc->zc_value, NULL, NULL) != 0 || 4472 strchr(zc->zc_value, '@') == NULL || 4473 strchr(zc->zc_value, '%')) 4474 return (SET_ERROR(EINVAL)); 4475 4476 (void) strcpy(tofs, zc->zc_value); 4477 tosnap = strchr(tofs, '@'); 4478 *tosnap++ = '\0'; 4479 4480 if (zc->zc_nvlist_src != 0 && 4481 (error = get_nvlist(zc->zc_nvlist_src, zc->zc_nvlist_src_size, 4482 zc->zc_iflags, &props)) != 0) 4483 return (error); 4484 4485 fd = zc->zc_cookie; 4486 fp = getf(fd); 4487 if (fp == NULL) { 4488 nvlist_free(props); 4489 return (SET_ERROR(EBADF)); 4490 } 4491 4492 errors = fnvlist_alloc(); 4493 4494 if (zc->zc_string[0]) 4495 origin = zc->zc_string; 4496 4497 error = dmu_recv_begin(tofs, tosnap, 4498 &zc->zc_begin_record, force, zc->zc_resumable, origin, &drc); 4499 if (error != 0) 4500 goto out; 4501 4502 /* 4503 * Set properties before we receive the stream so that they are applied 4504 * to the new data. Note that we must call dmu_recv_stream() if 4505 * dmu_recv_begin() succeeds. 4506 */ 4507 if (props != NULL && !drc.drc_newfs) { 4508 if (spa_version(dsl_dataset_get_spa(drc.drc_ds)) >= 4509 SPA_VERSION_RECVD_PROPS && 4510 !dsl_prop_get_hasrecvd(tofs)) 4511 first_recvd_props = B_TRUE; 4512 4513 /* 4514 * If new received properties are supplied, they are to 4515 * completely replace the existing received properties, so stash 4516 * away the existing ones. 4517 */ 4518 if (dsl_prop_get_received(tofs, &origprops) == 0) { 4519 nvlist_t *errlist = NULL; 4520 /* 4521 * Don't bother writing a property if its value won't 4522 * change (and avoid the unnecessary security checks). 4523 * 4524 * The first receive after SPA_VERSION_RECVD_PROPS is a 4525 * special case where we blow away all local properties 4526 * regardless. 4527 */ 4528 if (!first_recvd_props) 4529 props_reduce(props, origprops); 4530 if (zfs_check_clearable(tofs, origprops, &errlist) != 0) 4531 (void) nvlist_merge(errors, errlist, 0); 4532 nvlist_free(errlist); 4533 4534 if (clear_received_props(tofs, origprops, 4535 first_recvd_props ? NULL : props) != 0) 4536 zc->zc_obj |= ZPROP_ERR_NOCLEAR; 4537 } else { 4538 zc->zc_obj |= ZPROP_ERR_NOCLEAR; 4539 } 4540 } 4541 4542 if (props != NULL) { 4543 props_error = dsl_prop_set_hasrecvd(tofs); 4544 4545 if (props_error == 0) { 4546 delayprops = extract_delay_props(props); 4547 (void) zfs_set_prop_nvlist(tofs, ZPROP_SRC_RECEIVED, 4548 props, errors); 4549 } 4550 } 4551 4552 off = fp->f_offset; 4553 error = dmu_recv_stream(&drc, fp->f_vnode, &off, zc->zc_cleanup_fd, 4554 &zc->zc_action_handle); 4555 4556 if (error == 0) { 4557 zfsvfs_t *zfsvfs = NULL; 4558 4559 if (getzfsvfs(tofs, &zfsvfs) == 0) { 4560 /* online recv */ 4561 dsl_dataset_t *ds; 4562 int end_err; 4563 4564 ds = dmu_objset_ds(zfsvfs->z_os); 4565 error = zfs_suspend_fs(zfsvfs); 4566 /* 4567 * If the suspend fails, then the recv_end will 4568 * likely also fail, and clean up after itself. 4569 */ 4570 end_err = dmu_recv_end(&drc, zfsvfs); 4571 if (error == 0) 4572 error = zfs_resume_fs(zfsvfs, ds); 4573 error = error ? error : end_err; 4574 VFS_RELE(zfsvfs->z_vfs); 4575 } else { 4576 error = dmu_recv_end(&drc, NULL); 4577 } 4578 4579 /* Set delayed properties now, after we're done receiving. */ 4580 if (delayprops != NULL && error == 0) { 4581 (void) zfs_set_prop_nvlist(tofs, ZPROP_SRC_RECEIVED, 4582 delayprops, errors); 4583 } 4584 } 4585 4586 if (delayprops != NULL && props != NULL) { 4587 /* 4588 * Merge delayed props back in with initial props, in case 4589 * we're DEBUG and zfs_ioc_recv_inject_err is set (which means 4590 * we have to make sure clear_received_props() includes 4591 * the delayed properties). 4592 * 4593 * Since zfs_ioc_recv_inject_err is only in DEBUG kernels, 4594 * using ASSERT() will be just like a VERIFY. 4595 */ 4596 ASSERT(nvlist_merge(props, delayprops, 0) == 0); 4597 nvlist_free(delayprops); 4598 } 4599 4600 /* 4601 * Now that all props, initial and delayed, are set, report the prop 4602 * errors to the caller. 4603 */ 4604 if (zc->zc_nvlist_dst_size != 0 && 4605 (nvlist_smush(errors, zc->zc_nvlist_dst_size) != 0 || 4606 put_nvlist(zc, errors) != 0)) { 4607 /* 4608 * Caller made zc->zc_nvlist_dst less than the minimum expected 4609 * size or supplied an invalid address. 4610 */ 4611 props_error = SET_ERROR(EINVAL); 4612 } 4613 4614 zc->zc_cookie = off - fp->f_offset; 4615 if (VOP_SEEK(fp->f_vnode, fp->f_offset, &off, NULL) == 0) 4616 fp->f_offset = off; 4617 4618 #ifdef DEBUG 4619 if (zfs_ioc_recv_inject_err) { 4620 zfs_ioc_recv_inject_err = B_FALSE; 4621 error = 1; 4622 } 4623 #endif 4624 /* 4625 * On error, restore the original props. 4626 */ 4627 if (error != 0 && props != NULL && !drc.drc_newfs) { 4628 if (clear_received_props(tofs, props, NULL) != 0) { 4629 /* 4630 * We failed to clear the received properties. 4631 * Since we may have left a $recvd value on the 4632 * system, we can't clear the $hasrecvd flag. 4633 */ 4634 zc->zc_obj |= ZPROP_ERR_NORESTORE; 4635 } else if (first_recvd_props) { 4636 dsl_prop_unset_hasrecvd(tofs); 4637 } 4638 4639 if (origprops == NULL && !drc.drc_newfs) { 4640 /* We failed to stash the original properties. */ 4641 zc->zc_obj |= ZPROP_ERR_NORESTORE; 4642 } 4643 4644 /* 4645 * dsl_props_set() will not convert RECEIVED to LOCAL on or 4646 * after SPA_VERSION_RECVD_PROPS, so we need to specify LOCAL 4647 * explictly if we're restoring local properties cleared in the 4648 * first new-style receive. 4649 */ 4650 if (origprops != NULL && 4651 zfs_set_prop_nvlist(tofs, (first_recvd_props ? 4652 ZPROP_SRC_LOCAL : ZPROP_SRC_RECEIVED), 4653 origprops, NULL) != 0) { 4654 /* 4655 * We stashed the original properties but failed to 4656 * restore them. 4657 */ 4658 zc->zc_obj |= ZPROP_ERR_NORESTORE; 4659 } 4660 } 4661 out: 4662 nvlist_free(props); 4663 nvlist_free(origprops); 4664 nvlist_free(errors); 4665 releasef(fd); 4666 4667 if (error == 0) 4668 error = props_error; 4669 4670 return (error); 4671 } 4672 4673 /* 4674 * inputs: 4675 * zc_name name of snapshot to send 4676 * zc_cookie file descriptor to send stream to 4677 * zc_obj fromorigin flag (mutually exclusive with zc_fromobj) 4678 * zc_sendobj objsetid of snapshot to send 4679 * zc_fromobj objsetid of incremental fromsnap (may be zero) 4680 * zc_guid if set, estimate size of stream only. zc_cookie is ignored. 4681 * output size in zc_objset_type. 4682 * zc_flags lzc_send_flags 4683 * 4684 * outputs: 4685 * zc_objset_type estimated size, if zc_guid is set 4686 */ 4687 static int 4688 zfs_ioc_send(zfs_cmd_t *zc) 4689 { 4690 int error; 4691 offset_t off; 4692 boolean_t estimate = (zc->zc_guid != 0); 4693 boolean_t embedok = (zc->zc_flags & 0x1); 4694 boolean_t large_block_ok = (zc->zc_flags & 0x2); 4695 boolean_t compressok = (zc->zc_flags & 0x4); 4696 boolean_t rawok = (zc->zc_flags & 0x8); 4697 4698 if (zc->zc_obj != 0) { 4699 dsl_pool_t *dp; 4700 dsl_dataset_t *tosnap; 4701 4702 error = dsl_pool_hold(zc->zc_name, FTAG, &dp); 4703 if (error != 0) 4704 return (error); 4705 4706 error = dsl_dataset_hold_obj(dp, zc->zc_sendobj, FTAG, &tosnap); 4707 if (error != 0) { 4708 dsl_pool_rele(dp, FTAG); 4709 return (error); 4710 } 4711 4712 if (dsl_dir_is_clone(tosnap->ds_dir)) 4713 zc->zc_fromobj = 4714 dsl_dir_phys(tosnap->ds_dir)->dd_origin_obj; 4715 dsl_dataset_rele(tosnap, FTAG); 4716 dsl_pool_rele(dp, FTAG); 4717 } 4718 4719 if (estimate) { 4720 dsl_pool_t *dp; 4721 dsl_dataset_t *tosnap; 4722 dsl_dataset_t *fromsnap = NULL; 4723 4724 error = dsl_pool_hold(zc->zc_name, FTAG, &dp); 4725 if (error != 0) 4726 return (error); 4727 4728 error = dsl_dataset_hold_obj(dp, zc->zc_sendobj, 4729 FTAG, &tosnap); 4730 if (error != 0) { 4731 dsl_pool_rele(dp, FTAG); 4732 return (error); 4733 } 4734 4735 if (zc->zc_fromobj != 0) { 4736 error = dsl_dataset_hold_obj(dp, zc->zc_fromobj, 4737 FTAG, &fromsnap); 4738 if (error != 0) { 4739 dsl_dataset_rele(tosnap, FTAG); 4740 dsl_pool_rele(dp, FTAG); 4741 return (error); 4742 } 4743 } 4744 4745 error = dmu_send_estimate(tosnap, fromsnap, compressok || rawok, 4746 &zc->zc_objset_type); 4747 4748 if (fromsnap != NULL) 4749 dsl_dataset_rele(fromsnap, FTAG); 4750 dsl_dataset_rele(tosnap, FTAG); 4751 dsl_pool_rele(dp, FTAG); 4752 } else { 4753 file_t *fp = getf(zc->zc_cookie); 4754 if (fp == NULL) 4755 return (SET_ERROR(EBADF)); 4756 4757 off = fp->f_offset; 4758 error = dmu_send_obj(zc->zc_name, zc->zc_sendobj, 4759 zc->zc_fromobj, embedok, large_block_ok, compressok, rawok, 4760 zc->zc_cookie, fp->f_vnode, &off); 4761 4762 if (VOP_SEEK(fp->f_vnode, fp->f_offset, &off, NULL) == 0) 4763 fp->f_offset = off; 4764 releasef(zc->zc_cookie); 4765 } 4766 return (error); 4767 } 4768 4769 /* 4770 * inputs: 4771 * zc_name name of snapshot on which to report progress 4772 * zc_cookie file descriptor of send stream 4773 * 4774 * outputs: 4775 * zc_cookie number of bytes written in send stream thus far 4776 */ 4777 static int 4778 zfs_ioc_send_progress(zfs_cmd_t *zc) 4779 { 4780 dsl_pool_t *dp; 4781 dsl_dataset_t *ds; 4782 dmu_sendarg_t *dsp = NULL; 4783 int error; 4784 4785 error = dsl_pool_hold(zc->zc_name, FTAG, &dp); 4786 if (error != 0) 4787 return (error); 4788 4789 error = dsl_dataset_hold(dp, zc->zc_name, FTAG, &ds); 4790 if (error != 0) { 4791 dsl_pool_rele(dp, FTAG); 4792 return (error); 4793 } 4794 4795 mutex_enter(&ds->ds_sendstream_lock); 4796 4797 /* 4798 * Iterate over all the send streams currently active on this dataset. 4799 * If there's one which matches the specified file descriptor _and_ the 4800 * stream was started by the current process, return the progress of 4801 * that stream. 4802 */ 4803 for (dsp = list_head(&ds->ds_sendstreams); dsp != NULL; 4804 dsp = list_next(&ds->ds_sendstreams, dsp)) { 4805 if (dsp->dsa_outfd == zc->zc_cookie && 4806 dsp->dsa_proc == curproc) 4807 break; 4808 } 4809 4810 if (dsp != NULL) 4811 zc->zc_cookie = *(dsp->dsa_off); 4812 else 4813 error = SET_ERROR(ENOENT); 4814 4815 mutex_exit(&ds->ds_sendstream_lock); 4816 dsl_dataset_rele(ds, FTAG); 4817 dsl_pool_rele(dp, FTAG); 4818 return (error); 4819 } 4820 4821 static int 4822 zfs_ioc_inject_fault(zfs_cmd_t *zc) 4823 { 4824 int id, error; 4825 4826 error = zio_inject_fault(zc->zc_name, (int)zc->zc_guid, &id, 4827 &zc->zc_inject_record); 4828 4829 if (error == 0) 4830 zc->zc_guid = (uint64_t)id; 4831 4832 return (error); 4833 } 4834 4835 static int 4836 zfs_ioc_clear_fault(zfs_cmd_t *zc) 4837 { 4838 return (zio_clear_fault((int)zc->zc_guid)); 4839 } 4840 4841 static int 4842 zfs_ioc_inject_list_next(zfs_cmd_t *zc) 4843 { 4844 int id = (int)zc->zc_guid; 4845 int error; 4846 4847 error = zio_inject_list_next(&id, zc->zc_name, sizeof (zc->zc_name), 4848 &zc->zc_inject_record); 4849 4850 zc->zc_guid = id; 4851 4852 return (error); 4853 } 4854 4855 static int 4856 zfs_ioc_error_log(zfs_cmd_t *zc) 4857 { 4858 spa_t *spa; 4859 int error; 4860 size_t count = (size_t)zc->zc_nvlist_dst_size; 4861 4862 if ((error = spa_open(zc->zc_name, &spa, FTAG)) != 0) 4863 return (error); 4864 4865 error = spa_get_errlog(spa, (void *)(uintptr_t)zc->zc_nvlist_dst, 4866 &count); 4867 if (error == 0) 4868 zc->zc_nvlist_dst_size = count; 4869 else 4870 zc->zc_nvlist_dst_size = spa_get_errlog_size(spa); 4871 4872 spa_close(spa, FTAG); 4873 4874 return (error); 4875 } 4876 4877 static int 4878 zfs_ioc_clear(zfs_cmd_t *zc) 4879 { 4880 spa_t *spa; 4881 vdev_t *vd; 4882 int error; 4883 4884 /* 4885 * On zpool clear we also fix up missing slogs 4886 */ 4887 mutex_enter(&spa_namespace_lock); 4888 spa = spa_lookup(zc->zc_name); 4889 if (spa == NULL) { 4890 mutex_exit(&spa_namespace_lock); 4891 return (SET_ERROR(EIO)); 4892 } 4893 if (spa_get_log_state(spa) == SPA_LOG_MISSING) { 4894 /* we need to let spa_open/spa_load clear the chains */ 4895 spa_set_log_state(spa, SPA_LOG_CLEAR); 4896 } 4897 spa->spa_last_open_failed = 0; 4898 mutex_exit(&spa_namespace_lock); 4899 4900 if (zc->zc_cookie & ZPOOL_NO_REWIND) { 4901 error = spa_open(zc->zc_name, &spa, FTAG); 4902 } else { 4903 nvlist_t *policy; 4904 nvlist_t *config = NULL; 4905 4906 if (zc->zc_nvlist_src == 0) 4907 return (SET_ERROR(EINVAL)); 4908 4909 if ((error = get_nvlist(zc->zc_nvlist_src, 4910 zc->zc_nvlist_src_size, zc->zc_iflags, &policy)) == 0) { 4911 error = spa_open_rewind(zc->zc_name, &spa, FTAG, 4912 policy, &config); 4913 if (config != NULL) { 4914 int err; 4915 4916 if ((err = put_nvlist(zc, config)) != 0) 4917 error = err; 4918 nvlist_free(config); 4919 } 4920 nvlist_free(policy); 4921 } 4922 } 4923 4924 if (error != 0) 4925 return (error); 4926 4927 /* 4928 * If multihost is enabled, resuming I/O is unsafe as another 4929 * host may have imported the pool. 4930 */ 4931 if (spa_multihost(spa) && spa_suspended(spa)) 4932 return (SET_ERROR(EINVAL)); 4933 4934 spa_vdev_state_enter(spa, SCL_NONE); 4935 4936 if (zc->zc_guid == 0) { 4937 vd = NULL; 4938 } else { 4939 vd = spa_lookup_by_guid(spa, zc->zc_guid, B_TRUE); 4940 if (vd == NULL) { 4941 (void) spa_vdev_state_exit(spa, NULL, ENODEV); 4942 spa_close(spa, FTAG); 4943 return (SET_ERROR(ENODEV)); 4944 } 4945 } 4946 4947 vdev_clear(spa, vd); 4948 4949 (void) spa_vdev_state_exit(spa, NULL, 0); 4950 4951 /* 4952 * Resume any suspended I/Os. 4953 */ 4954 if (zio_resume(spa) != 0) 4955 error = SET_ERROR(EIO); 4956 4957 spa_close(spa, FTAG); 4958 4959 return (error); 4960 } 4961 4962 static int 4963 zfs_ioc_pool_reopen(zfs_cmd_t *zc) 4964 { 4965 spa_t *spa; 4966 int error; 4967 4968 error = spa_open(zc->zc_name, &spa, FTAG); 4969 if (error != 0) 4970 return (error); 4971 4972 spa_vdev_state_enter(spa, SCL_NONE); 4973 4974 /* 4975 * If a resilver is already in progress then set the 4976 * spa_scrub_reopen flag to B_TRUE so that we don't restart 4977 * the scan as a side effect of the reopen. Otherwise, let 4978 * vdev_open() decided if a resilver is required. 4979 */ 4980 spa->spa_scrub_reopen = dsl_scan_resilvering(spa->spa_dsl_pool); 4981 vdev_reopen(spa->spa_root_vdev); 4982 spa->spa_scrub_reopen = B_FALSE; 4983 4984 (void) spa_vdev_state_exit(spa, NULL, 0); 4985 spa_close(spa, FTAG); 4986 return (0); 4987 } 4988 /* 4989 * inputs: 4990 * zc_name name of filesystem 4991 * 4992 * outputs: 4993 * zc_string name of conflicting snapshot, if there is one 4994 */ 4995 static int 4996 zfs_ioc_promote(zfs_cmd_t *zc) 4997 { 4998 dsl_pool_t *dp; 4999 dsl_dataset_t *ds, *ods; 5000 char origin[ZFS_MAX_DATASET_NAME_LEN]; 5001 char *cp; 5002 int error; 5003 5004 zc->zc_name[sizeof (zc->zc_name) - 1] = '\0'; 5005 if (dataset_namecheck(zc->zc_name, NULL, NULL) != 0 || 5006 strchr(zc->zc_name, '%')) 5007 return (SET_ERROR(EINVAL)); 5008 5009 error = dsl_pool_hold(zc->zc_name, FTAG, &dp); 5010 if (error != 0) 5011 return (error); 5012 5013 error = dsl_dataset_hold(dp, zc->zc_name, FTAG, &ds); 5014 if (error != 0) { 5015 dsl_pool_rele(dp, FTAG); 5016 return (error); 5017 } 5018 5019 if (!dsl_dir_is_clone(ds->ds_dir)) { 5020 dsl_dataset_rele(ds, FTAG); 5021 dsl_pool_rele(dp, FTAG); 5022 return (SET_ERROR(EINVAL)); 5023 } 5024 5025 error = dsl_dataset_hold_obj(dp, 5026 dsl_dir_phys(ds->ds_dir)->dd_origin_obj, FTAG, &ods); 5027 if (error != 0) { 5028 dsl_dataset_rele(ds, FTAG); 5029 dsl_pool_rele(dp, FTAG); 5030 return (error); 5031 } 5032 5033 dsl_dataset_name(ods, origin); 5034 dsl_dataset_rele(ods, FTAG); 5035 dsl_dataset_rele(ds, FTAG); 5036 dsl_pool_rele(dp, FTAG); 5037 5038 /* 5039 * We don't need to unmount *all* the origin fs's snapshots, but 5040 * it's easier. 5041 */ 5042 cp = strchr(origin, '@'); 5043 if (cp) 5044 *cp = '\0'; 5045 (void) dmu_objset_find(origin, 5046 zfs_unmount_snap_cb, NULL, DS_FIND_SNAPSHOTS); 5047 return (dsl_dataset_promote(zc->zc_name, zc->zc_string)); 5048 } 5049 5050 /* 5051 * Retrieve a single {user|group}{used|quota}@... property. 5052 * 5053 * inputs: 5054 * zc_name name of filesystem 5055 * zc_objset_type zfs_userquota_prop_t 5056 * zc_value domain name (eg. "S-1-234-567-89") 5057 * zc_guid RID/UID/GID 5058 * 5059 * outputs: 5060 * zc_cookie property value 5061 */ 5062 static int 5063 zfs_ioc_userspace_one(zfs_cmd_t *zc) 5064 { 5065 zfsvfs_t *zfsvfs; 5066 int error; 5067 5068 if (zc->zc_objset_type >= ZFS_NUM_USERQUOTA_PROPS) 5069 return (SET_ERROR(EINVAL)); 5070 5071 error = zfsvfs_hold(zc->zc_name, FTAG, &zfsvfs, B_FALSE); 5072 if (error != 0) 5073 return (error); 5074 5075 error = zfs_userspace_one(zfsvfs, 5076 zc->zc_objset_type, zc->zc_value, zc->zc_guid, &zc->zc_cookie); 5077 zfsvfs_rele(zfsvfs, FTAG); 5078 5079 return (error); 5080 } 5081 5082 /* 5083 * inputs: 5084 * zc_name name of filesystem 5085 * zc_cookie zap cursor 5086 * zc_objset_type zfs_userquota_prop_t 5087 * zc_nvlist_dst[_size] buffer to fill (not really an nvlist) 5088 * 5089 * outputs: 5090 * zc_nvlist_dst[_size] data buffer (array of zfs_useracct_t) 5091 * zc_cookie zap cursor 5092 */ 5093 static int 5094 zfs_ioc_userspace_many(zfs_cmd_t *zc) 5095 { 5096 zfsvfs_t *zfsvfs; 5097 int bufsize = zc->zc_nvlist_dst_size; 5098 5099 if (bufsize <= 0) 5100 return (SET_ERROR(ENOMEM)); 5101 5102 int error = zfsvfs_hold(zc->zc_name, FTAG, &zfsvfs, B_FALSE); 5103 if (error != 0) 5104 return (error); 5105 5106 void *buf = kmem_alloc(bufsize, KM_SLEEP); 5107 5108 error = zfs_userspace_many(zfsvfs, zc->zc_objset_type, &zc->zc_cookie, 5109 buf, &zc->zc_nvlist_dst_size); 5110 5111 if (error == 0) { 5112 error = xcopyout(buf, 5113 (void *)(uintptr_t)zc->zc_nvlist_dst, 5114 zc->zc_nvlist_dst_size); 5115 } 5116 kmem_free(buf, bufsize); 5117 zfsvfs_rele(zfsvfs, FTAG); 5118 5119 return (error); 5120 } 5121 5122 /* 5123 * inputs: 5124 * zc_name name of filesystem 5125 * 5126 * outputs: 5127 * none 5128 */ 5129 static int 5130 zfs_ioc_userspace_upgrade(zfs_cmd_t *zc) 5131 { 5132 objset_t *os; 5133 int error = 0; 5134 zfsvfs_t *zfsvfs; 5135 5136 if (getzfsvfs(zc->zc_name, &zfsvfs) == 0) { 5137 if (!dmu_objset_userused_enabled(zfsvfs->z_os)) { 5138 /* 5139 * If userused is not enabled, it may be because the 5140 * objset needs to be closed & reopened (to grow the 5141 * objset_phys_t). Suspend/resume the fs will do that. 5142 */ 5143 dsl_dataset_t *ds, *newds; 5144 5145 ds = dmu_objset_ds(zfsvfs->z_os); 5146 error = zfs_suspend_fs(zfsvfs); 5147 if (error == 0) { 5148 dmu_objset_refresh_ownership(ds, &newds, 5149 B_TRUE, zfsvfs); 5150 error = zfs_resume_fs(zfsvfs, newds); 5151 } 5152 } 5153 if (error == 0) 5154 error = dmu_objset_userspace_upgrade(zfsvfs->z_os); 5155 VFS_RELE(zfsvfs->z_vfs); 5156 } else { 5157 /* XXX kind of reading contents without owning */ 5158 error = dmu_objset_hold_flags(zc->zc_name, B_TRUE, FTAG, &os); 5159 if (error != 0) 5160 return (error); 5161 5162 error = dmu_objset_userspace_upgrade(os); 5163 dmu_objset_rele_flags(os, B_TRUE, FTAG); 5164 } 5165 5166 return (error); 5167 } 5168 5169 /* 5170 * We don't want to have a hard dependency 5171 * against some special symbols in sharefs 5172 * nfs, and smbsrv. Determine them if needed when 5173 * the first file system is shared. 5174 * Neither sharefs, nfs or smbsrv are unloadable modules. 5175 */ 5176 int (*znfsexport_fs)(void *arg); 5177 int (*zshare_fs)(enum sharefs_sys_op, share_t *, uint32_t); 5178 int (*zsmbexport_fs)(void *arg, boolean_t add_share); 5179 5180 int zfs_nfsshare_inited; 5181 int zfs_smbshare_inited; 5182 5183 ddi_modhandle_t nfs_mod; 5184 ddi_modhandle_t sharefs_mod; 5185 ddi_modhandle_t smbsrv_mod; 5186 kmutex_t zfs_share_lock; 5187 5188 static int 5189 zfs_init_sharefs() 5190 { 5191 int error; 5192 5193 ASSERT(MUTEX_HELD(&zfs_share_lock)); 5194 /* Both NFS and SMB shares also require sharetab support. */ 5195 if (sharefs_mod == NULL && ((sharefs_mod = 5196 ddi_modopen("fs/sharefs", 5197 KRTLD_MODE_FIRST, &error)) == NULL)) { 5198 return (SET_ERROR(ENOSYS)); 5199 } 5200 if (zshare_fs == NULL && ((zshare_fs = 5201 (int (*)(enum sharefs_sys_op, share_t *, uint32_t)) 5202 ddi_modsym(sharefs_mod, "sharefs_impl", &error)) == NULL)) { 5203 return (SET_ERROR(ENOSYS)); 5204 } 5205 return (0); 5206 } 5207 5208 static int 5209 zfs_ioc_share(zfs_cmd_t *zc) 5210 { 5211 int error; 5212 int opcode; 5213 5214 switch (zc->zc_share.z_sharetype) { 5215 case ZFS_SHARE_NFS: 5216 case ZFS_UNSHARE_NFS: 5217 if (zfs_nfsshare_inited == 0) { 5218 mutex_enter(&zfs_share_lock); 5219 if (nfs_mod == NULL && ((nfs_mod = ddi_modopen("fs/nfs", 5220 KRTLD_MODE_FIRST, &error)) == NULL)) { 5221 mutex_exit(&zfs_share_lock); 5222 return (SET_ERROR(ENOSYS)); 5223 } 5224 if (znfsexport_fs == NULL && 5225 ((znfsexport_fs = (int (*)(void *)) 5226 ddi_modsym(nfs_mod, 5227 "nfs_export", &error)) == NULL)) { 5228 mutex_exit(&zfs_share_lock); 5229 return (SET_ERROR(ENOSYS)); 5230 } 5231 error = zfs_init_sharefs(); 5232 if (error != 0) { 5233 mutex_exit(&zfs_share_lock); 5234 return (SET_ERROR(ENOSYS)); 5235 } 5236 zfs_nfsshare_inited = 1; 5237 mutex_exit(&zfs_share_lock); 5238 } 5239 break; 5240 case ZFS_SHARE_SMB: 5241 case ZFS_UNSHARE_SMB: 5242 if (zfs_smbshare_inited == 0) { 5243 mutex_enter(&zfs_share_lock); 5244 if (smbsrv_mod == NULL && ((smbsrv_mod = 5245 ddi_modopen("drv/smbsrv", 5246 KRTLD_MODE_FIRST, &error)) == NULL)) { 5247 mutex_exit(&zfs_share_lock); 5248 return (SET_ERROR(ENOSYS)); 5249 } 5250 if (zsmbexport_fs == NULL && ((zsmbexport_fs = 5251 (int (*)(void *, boolean_t))ddi_modsym(smbsrv_mod, 5252 "smb_server_share", &error)) == NULL)) { 5253 mutex_exit(&zfs_share_lock); 5254 return (SET_ERROR(ENOSYS)); 5255 } 5256 error = zfs_init_sharefs(); 5257 if (error != 0) { 5258 mutex_exit(&zfs_share_lock); 5259 return (SET_ERROR(ENOSYS)); 5260 } 5261 zfs_smbshare_inited = 1; 5262 mutex_exit(&zfs_share_lock); 5263 } 5264 break; 5265 default: 5266 return (SET_ERROR(EINVAL)); 5267 } 5268 5269 switch (zc->zc_share.z_sharetype) { 5270 case ZFS_SHARE_NFS: 5271 case ZFS_UNSHARE_NFS: 5272 if (error = 5273 znfsexport_fs((void *) 5274 (uintptr_t)zc->zc_share.z_exportdata)) 5275 return (error); 5276 break; 5277 case ZFS_SHARE_SMB: 5278 case ZFS_UNSHARE_SMB: 5279 if (error = zsmbexport_fs((void *) 5280 (uintptr_t)zc->zc_share.z_exportdata, 5281 zc->zc_share.z_sharetype == ZFS_SHARE_SMB ? 5282 B_TRUE: B_FALSE)) { 5283 return (error); 5284 } 5285 break; 5286 } 5287 5288 opcode = (zc->zc_share.z_sharetype == ZFS_SHARE_NFS || 5289 zc->zc_share.z_sharetype == ZFS_SHARE_SMB) ? 5290 SHAREFS_ADD : SHAREFS_REMOVE; 5291 5292 /* 5293 * Add or remove share from sharetab 5294 */ 5295 error = zshare_fs(opcode, 5296 (void *)(uintptr_t)zc->zc_share.z_sharedata, 5297 zc->zc_share.z_sharemax); 5298 5299 return (error); 5300 5301 } 5302 5303 ace_t full_access[] = { 5304 {(uid_t)-1, ACE_ALL_PERMS, ACE_EVERYONE, 0} 5305 }; 5306 5307 /* 5308 * inputs: 5309 * zc_name name of containing filesystem 5310 * zc_obj object # beyond which we want next in-use object # 5311 * 5312 * outputs: 5313 * zc_obj next in-use object # 5314 */ 5315 static int 5316 zfs_ioc_next_obj(zfs_cmd_t *zc) 5317 { 5318 objset_t *os = NULL; 5319 int error; 5320 5321 error = dmu_objset_hold_flags(zc->zc_name, B_TRUE, FTAG, &os); 5322 if (error != 0) 5323 return (error); 5324 5325 error = dmu_object_next(os, &zc->zc_obj, B_FALSE, 5326 dsl_dataset_phys(os->os_dsl_dataset)->ds_prev_snap_txg); 5327 5328 dmu_objset_rele(os, FTAG); 5329 return (error); 5330 } 5331 5332 /* 5333 * inputs: 5334 * zc_name name of filesystem 5335 * zc_value prefix name for snapshot 5336 * zc_cleanup_fd cleanup-on-exit file descriptor for calling process 5337 * 5338 * outputs: 5339 * zc_value short name of new snapshot 5340 */ 5341 static int 5342 zfs_ioc_tmp_snapshot(zfs_cmd_t *zc) 5343 { 5344 char *snap_name; 5345 char *hold_name; 5346 int error; 5347 minor_t minor; 5348 5349 error = zfs_onexit_fd_hold(zc->zc_cleanup_fd, &minor); 5350 if (error != 0) 5351 return (error); 5352 5353 snap_name = kmem_asprintf("%s-%016llx", zc->zc_value, 5354 (u_longlong_t)ddi_get_lbolt64()); 5355 hold_name = kmem_asprintf("%%%s", zc->zc_value); 5356 5357 error = dsl_dataset_snapshot_tmp(zc->zc_name, snap_name, minor, 5358 hold_name); 5359 if (error == 0) 5360 (void) strcpy(zc->zc_value, snap_name); 5361 strfree(snap_name); 5362 strfree(hold_name); 5363 zfs_onexit_fd_rele(zc->zc_cleanup_fd); 5364 return (error); 5365 } 5366 5367 /* 5368 * inputs: 5369 * zc_name name of "to" snapshot 5370 * zc_value name of "from" snapshot 5371 * zc_cookie file descriptor to write diff data on 5372 * 5373 * outputs: 5374 * dmu_diff_record_t's to the file descriptor 5375 */ 5376 static int 5377 zfs_ioc_diff(zfs_cmd_t *zc) 5378 { 5379 file_t *fp; 5380 offset_t off; 5381 int error; 5382 5383 fp = getf(zc->zc_cookie); 5384 if (fp == NULL) 5385 return (SET_ERROR(EBADF)); 5386 5387 off = fp->f_offset; 5388 5389 error = dmu_diff(zc->zc_name, zc->zc_value, fp->f_vnode, &off); 5390 5391 if (VOP_SEEK(fp->f_vnode, fp->f_offset, &off, NULL) == 0) 5392 fp->f_offset = off; 5393 releasef(zc->zc_cookie); 5394 5395 return (error); 5396 } 5397 5398 /* 5399 * Remove all ACL files in shares dir 5400 */ 5401 static int 5402 zfs_smb_acl_purge(znode_t *dzp) 5403 { 5404 zap_cursor_t zc; 5405 zap_attribute_t zap; 5406 zfsvfs_t *zfsvfs = dzp->z_zfsvfs; 5407 int error; 5408 5409 for (zap_cursor_init(&zc, zfsvfs->z_os, dzp->z_id); 5410 (error = zap_cursor_retrieve(&zc, &zap)) == 0; 5411 zap_cursor_advance(&zc)) { 5412 if ((error = VOP_REMOVE(ZTOV(dzp), zap.za_name, kcred, 5413 NULL, 0)) != 0) 5414 break; 5415 } 5416 zap_cursor_fini(&zc); 5417 return (error); 5418 } 5419 5420 static int 5421 zfs_ioc_smb_acl(zfs_cmd_t *zc) 5422 { 5423 vnode_t *vp; 5424 znode_t *dzp; 5425 vnode_t *resourcevp = NULL; 5426 znode_t *sharedir; 5427 zfsvfs_t *zfsvfs; 5428 nvlist_t *nvlist; 5429 char *src, *target; 5430 vattr_t vattr; 5431 vsecattr_t vsec; 5432 int error = 0; 5433 5434 if ((error = lookupname(zc->zc_value, UIO_SYSSPACE, 5435 NO_FOLLOW, NULL, &vp)) != 0) 5436 return (error); 5437 5438 /* Now make sure mntpnt and dataset are ZFS */ 5439 5440 if (vp->v_vfsp->vfs_fstype != zfsfstype || 5441 (strcmp((char *)refstr_value(vp->v_vfsp->vfs_resource), 5442 zc->zc_name) != 0)) { 5443 VN_RELE(vp); 5444 return (SET_ERROR(EINVAL)); 5445 } 5446 5447 dzp = VTOZ(vp); 5448 zfsvfs = dzp->z_zfsvfs; 5449 ZFS_ENTER(zfsvfs); 5450 5451 /* 5452 * Create share dir if its missing. 5453 */ 5454 mutex_enter(&zfsvfs->z_lock); 5455 if (zfsvfs->z_shares_dir == 0) { 5456 dmu_tx_t *tx; 5457 5458 tx = dmu_tx_create(zfsvfs->z_os); 5459 dmu_tx_hold_zap(tx, MASTER_NODE_OBJ, TRUE, 5460 ZFS_SHARES_DIR); 5461 dmu_tx_hold_zap(tx, DMU_NEW_OBJECT, FALSE, NULL); 5462 error = dmu_tx_assign(tx, TXG_WAIT); 5463 if (error != 0) { 5464 dmu_tx_abort(tx); 5465 } else { 5466 error = zfs_create_share_dir(zfsvfs, tx); 5467 dmu_tx_commit(tx); 5468 } 5469 if (error != 0) { 5470 mutex_exit(&zfsvfs->z_lock); 5471 VN_RELE(vp); 5472 ZFS_EXIT(zfsvfs); 5473 return (error); 5474 } 5475 } 5476 mutex_exit(&zfsvfs->z_lock); 5477 5478 ASSERT(zfsvfs->z_shares_dir); 5479 if ((error = zfs_zget(zfsvfs, zfsvfs->z_shares_dir, &sharedir)) != 0) { 5480 VN_RELE(vp); 5481 ZFS_EXIT(zfsvfs); 5482 return (error); 5483 } 5484 5485 switch (zc->zc_cookie) { 5486 case ZFS_SMB_ACL_ADD: 5487 vattr.va_mask = AT_MODE|AT_UID|AT_GID|AT_TYPE; 5488 vattr.va_type = VREG; 5489 vattr.va_mode = S_IFREG|0777; 5490 vattr.va_uid = 0; 5491 vattr.va_gid = 0; 5492 5493 vsec.vsa_mask = VSA_ACE; 5494 vsec.vsa_aclentp = &full_access; 5495 vsec.vsa_aclentsz = sizeof (full_access); 5496 vsec.vsa_aclcnt = 1; 5497 5498 error = VOP_CREATE(ZTOV(sharedir), zc->zc_string, 5499 &vattr, EXCL, 0, &resourcevp, kcred, 0, NULL, &vsec); 5500 if (resourcevp) 5501 VN_RELE(resourcevp); 5502 break; 5503 5504 case ZFS_SMB_ACL_REMOVE: 5505 error = VOP_REMOVE(ZTOV(sharedir), zc->zc_string, kcred, 5506 NULL, 0); 5507 break; 5508 5509 case ZFS_SMB_ACL_RENAME: 5510 if ((error = get_nvlist(zc->zc_nvlist_src, 5511 zc->zc_nvlist_src_size, zc->zc_iflags, &nvlist)) != 0) { 5512 VN_RELE(vp); 5513 VN_RELE(ZTOV(sharedir)); 5514 ZFS_EXIT(zfsvfs); 5515 return (error); 5516 } 5517 if (nvlist_lookup_string(nvlist, ZFS_SMB_ACL_SRC, &src) || 5518 nvlist_lookup_string(nvlist, ZFS_SMB_ACL_TARGET, 5519 &target)) { 5520 VN_RELE(vp); 5521 VN_RELE(ZTOV(sharedir)); 5522 ZFS_EXIT(zfsvfs); 5523 nvlist_free(nvlist); 5524 return (error); 5525 } 5526 error = VOP_RENAME(ZTOV(sharedir), src, ZTOV(sharedir), target, 5527 kcred, NULL, 0); 5528 nvlist_free(nvlist); 5529 break; 5530 5531 case ZFS_SMB_ACL_PURGE: 5532 error = zfs_smb_acl_purge(sharedir); 5533 break; 5534 5535 default: 5536 error = SET_ERROR(EINVAL); 5537 break; 5538 } 5539 5540 VN_RELE(vp); 5541 VN_RELE(ZTOV(sharedir)); 5542 5543 ZFS_EXIT(zfsvfs); 5544 5545 return (error); 5546 } 5547 5548 /* 5549 * innvl: { 5550 * "holds" -> { snapname -> holdname (string), ... } 5551 * (optional) "cleanup_fd" -> fd (int32) 5552 * } 5553 * 5554 * outnvl: { 5555 * snapname -> error value (int32) 5556 * ... 5557 * } 5558 */ 5559 /* ARGSUSED */ 5560 static int 5561 zfs_ioc_hold(const char *pool, nvlist_t *args, nvlist_t *errlist) 5562 { 5563 nvpair_t *pair; 5564 nvlist_t *holds; 5565 int cleanup_fd = -1; 5566 int error; 5567 minor_t minor = 0; 5568 5569 error = nvlist_lookup_nvlist(args, "holds", &holds); 5570 if (error != 0) 5571 return (SET_ERROR(EINVAL)); 5572 5573 /* make sure the user didn't pass us any invalid (empty) tags */ 5574 for (pair = nvlist_next_nvpair(holds, NULL); pair != NULL; 5575 pair = nvlist_next_nvpair(holds, pair)) { 5576 char *htag; 5577 5578 error = nvpair_value_string(pair, &htag); 5579 if (error != 0) 5580 return (SET_ERROR(error)); 5581 5582 if (strlen(htag) == 0) 5583 return (SET_ERROR(EINVAL)); 5584 } 5585 5586 if (nvlist_lookup_int32(args, "cleanup_fd", &cleanup_fd) == 0) { 5587 error = zfs_onexit_fd_hold(cleanup_fd, &minor); 5588 if (error != 0) 5589 return (error); 5590 } 5591 5592 error = dsl_dataset_user_hold(holds, minor, errlist); 5593 if (minor != 0) 5594 zfs_onexit_fd_rele(cleanup_fd); 5595 return (error); 5596 } 5597 5598 /* 5599 * innvl is not used. 5600 * 5601 * outnvl: { 5602 * holdname -> time added (uint64 seconds since epoch) 5603 * ... 5604 * } 5605 */ 5606 /* ARGSUSED */ 5607 static int 5608 zfs_ioc_get_holds(const char *snapname, nvlist_t *args, nvlist_t *outnvl) 5609 { 5610 ASSERT3P(args, ==, NULL); 5611 return (dsl_dataset_get_holds(snapname, outnvl)); 5612 } 5613 5614 /* 5615 * innvl: { 5616 * snapname -> { holdname, ... } 5617 * ... 5618 * } 5619 * 5620 * outnvl: { 5621 * snapname -> error value (int32) 5622 * ... 5623 * } 5624 */ 5625 /* ARGSUSED */ 5626 static int 5627 zfs_ioc_release(const char *pool, nvlist_t *holds, nvlist_t *errlist) 5628 { 5629 return (dsl_dataset_user_release(holds, errlist)); 5630 } 5631 5632 /* 5633 * inputs: 5634 * zc_name name of new filesystem or snapshot 5635 * zc_value full name of old snapshot 5636 * 5637 * outputs: 5638 * zc_cookie space in bytes 5639 * zc_objset_type compressed space in bytes 5640 * zc_perm_action uncompressed space in bytes 5641 */ 5642 static int 5643 zfs_ioc_space_written(zfs_cmd_t *zc) 5644 { 5645 int error; 5646 dsl_pool_t *dp; 5647 dsl_dataset_t *new, *old; 5648 5649 error = dsl_pool_hold(zc->zc_name, FTAG, &dp); 5650 if (error != 0) 5651 return (error); 5652 error = dsl_dataset_hold(dp, zc->zc_name, FTAG, &new); 5653 if (error != 0) { 5654 dsl_pool_rele(dp, FTAG); 5655 return (error); 5656 } 5657 error = dsl_dataset_hold(dp, zc->zc_value, FTAG, &old); 5658 if (error != 0) { 5659 dsl_dataset_rele(new, FTAG); 5660 dsl_pool_rele(dp, FTAG); 5661 return (error); 5662 } 5663 5664 error = dsl_dataset_space_written(old, new, &zc->zc_cookie, 5665 &zc->zc_objset_type, &zc->zc_perm_action); 5666 dsl_dataset_rele(old, FTAG); 5667 dsl_dataset_rele(new, FTAG); 5668 dsl_pool_rele(dp, FTAG); 5669 return (error); 5670 } 5671 5672 /* 5673 * innvl: { 5674 * "firstsnap" -> snapshot name 5675 * } 5676 * 5677 * outnvl: { 5678 * "used" -> space in bytes 5679 * "compressed" -> compressed space in bytes 5680 * "uncompressed" -> uncompressed space in bytes 5681 * } 5682 */ 5683 static int 5684 zfs_ioc_space_snaps(const char *lastsnap, nvlist_t *innvl, nvlist_t *outnvl) 5685 { 5686 int error; 5687 dsl_pool_t *dp; 5688 dsl_dataset_t *new, *old; 5689 char *firstsnap; 5690 uint64_t used, comp, uncomp; 5691 5692 if (nvlist_lookup_string(innvl, "firstsnap", &firstsnap) != 0) 5693 return (SET_ERROR(EINVAL)); 5694 5695 error = dsl_pool_hold(lastsnap, FTAG, &dp); 5696 if (error != 0) 5697 return (error); 5698 5699 error = dsl_dataset_hold(dp, lastsnap, FTAG, &new); 5700 if (error == 0 && !new->ds_is_snapshot) { 5701 dsl_dataset_rele(new, FTAG); 5702 error = SET_ERROR(EINVAL); 5703 } 5704 if (error != 0) { 5705 dsl_pool_rele(dp, FTAG); 5706 return (error); 5707 } 5708 error = dsl_dataset_hold(dp, firstsnap, FTAG, &old); 5709 if (error == 0 && !old->ds_is_snapshot) { 5710 dsl_dataset_rele(old, FTAG); 5711 error = SET_ERROR(EINVAL); 5712 } 5713 if (error != 0) { 5714 dsl_dataset_rele(new, FTAG); 5715 dsl_pool_rele(dp, FTAG); 5716 return (error); 5717 } 5718 5719 error = dsl_dataset_space_wouldfree(old, new, &used, &comp, &uncomp); 5720 dsl_dataset_rele(old, FTAG); 5721 dsl_dataset_rele(new, FTAG); 5722 dsl_pool_rele(dp, FTAG); 5723 fnvlist_add_uint64(outnvl, "used", used); 5724 fnvlist_add_uint64(outnvl, "compressed", comp); 5725 fnvlist_add_uint64(outnvl, "uncompressed", uncomp); 5726 return (error); 5727 } 5728 5729 /* 5730 * innvl: { 5731 * "fd" -> file descriptor to write stream to (int32) 5732 * (optional) "fromsnap" -> full snap name to send an incremental from 5733 * (optional) "largeblockok" -> (value ignored) 5734 * indicates that blocks > 128KB are permitted 5735 * (optional) "embedok" -> (value ignored) 5736 * presence indicates DRR_WRITE_EMBEDDED records are permitted 5737 * (optional) "compressok" -> (value ignored) 5738 * presence indicates compressed DRR_WRITE records are permitted 5739 * (optional) "rawok" -> (value ignored) 5740 * presence indicates raw encrypted records should be used. 5741 * (optional) "resume_object" and "resume_offset" -> (uint64) 5742 * if present, resume send stream from specified object and offset. 5743 * } 5744 * 5745 * outnvl is unused 5746 */ 5747 /* ARGSUSED */ 5748 static int 5749 zfs_ioc_send_new(const char *snapname, nvlist_t *innvl, nvlist_t *outnvl) 5750 { 5751 int error; 5752 offset_t off; 5753 char *fromname = NULL; 5754 int fd; 5755 boolean_t largeblockok; 5756 boolean_t embedok; 5757 boolean_t compressok; 5758 boolean_t rawok; 5759 uint64_t resumeobj = 0; 5760 uint64_t resumeoff = 0; 5761 5762 error = nvlist_lookup_int32(innvl, "fd", &fd); 5763 if (error != 0) 5764 return (SET_ERROR(EINVAL)); 5765 5766 (void) nvlist_lookup_string(innvl, "fromsnap", &fromname); 5767 5768 largeblockok = nvlist_exists(innvl, "largeblockok"); 5769 embedok = nvlist_exists(innvl, "embedok"); 5770 compressok = nvlist_exists(innvl, "compressok"); 5771 rawok = nvlist_exists(innvl, "rawok"); 5772 5773 (void) nvlist_lookup_uint64(innvl, "resume_object", &resumeobj); 5774 (void) nvlist_lookup_uint64(innvl, "resume_offset", &resumeoff); 5775 5776 file_t *fp = getf(fd); 5777 if (fp == NULL) 5778 return (SET_ERROR(EBADF)); 5779 5780 off = fp->f_offset; 5781 error = dmu_send(snapname, fromname, embedok, largeblockok, compressok, 5782 rawok, fd, resumeobj, resumeoff, fp->f_vnode, &off); 5783 5784 if (VOP_SEEK(fp->f_vnode, fp->f_offset, &off, NULL) == 0) 5785 fp->f_offset = off; 5786 releasef(fd); 5787 return (error); 5788 } 5789 5790 /* 5791 * Determine approximately how large a zfs send stream will be -- the number 5792 * of bytes that will be written to the fd supplied to zfs_ioc_send_new(). 5793 * 5794 * innvl: { 5795 * (optional) "from" -> full snap or bookmark name to send an incremental 5796 * from 5797 * (optional) "largeblockok" -> (value ignored) 5798 * indicates that blocks > 128KB are permitted 5799 * (optional) "embedok" -> (value ignored) 5800 * presence indicates DRR_WRITE_EMBEDDED records are permitted 5801 * (optional) "compressok" -> (value ignored) 5802 * presence indicates compressed DRR_WRITE records are permitted 5803 * } 5804 * 5805 * outnvl: { 5806 * "space" -> bytes of space (uint64) 5807 * } 5808 */ 5809 static int 5810 zfs_ioc_send_space(const char *snapname, nvlist_t *innvl, nvlist_t *outnvl) 5811 { 5812 dsl_pool_t *dp; 5813 dsl_dataset_t *tosnap; 5814 int error; 5815 char *fromname; 5816 boolean_t compressok; 5817 boolean_t rawok; 5818 uint64_t space; 5819 5820 error = dsl_pool_hold(snapname, FTAG, &dp); 5821 if (error != 0) 5822 return (error); 5823 5824 error = dsl_dataset_hold(dp, snapname, FTAG, &tosnap); 5825 if (error != 0) { 5826 dsl_pool_rele(dp, FTAG); 5827 return (error); 5828 } 5829 5830 compressok = nvlist_exists(innvl, "compressok"); 5831 rawok = nvlist_exists(innvl, "rawok"); 5832 5833 error = nvlist_lookup_string(innvl, "from", &fromname); 5834 if (error == 0) { 5835 if (strchr(fromname, '@') != NULL) { 5836 /* 5837 * If from is a snapshot, hold it and use the more 5838 * efficient dmu_send_estimate to estimate send space 5839 * size using deadlists. 5840 */ 5841 dsl_dataset_t *fromsnap; 5842 error = dsl_dataset_hold(dp, fromname, FTAG, &fromsnap); 5843 if (error != 0) 5844 goto out; 5845 error = dmu_send_estimate(tosnap, fromsnap, 5846 compressok || rawok, &space); 5847 dsl_dataset_rele(fromsnap, FTAG); 5848 } else if (strchr(fromname, '#') != NULL) { 5849 /* 5850 * If from is a bookmark, fetch the creation TXG of the 5851 * snapshot it was created from and use that to find 5852 * blocks that were born after it. 5853 */ 5854 zfs_bookmark_phys_t frombm; 5855 5856 error = dsl_bookmark_lookup(dp, fromname, tosnap, 5857 &frombm); 5858 if (error != 0) 5859 goto out; 5860 error = dmu_send_estimate_from_txg(tosnap, 5861 frombm.zbm_creation_txg, compressok || rawok, 5862 &space); 5863 } else { 5864 /* 5865 * from is not properly formatted as a snapshot or 5866 * bookmark 5867 */ 5868 error = SET_ERROR(EINVAL); 5869 goto out; 5870 } 5871 } else { 5872 /* 5873 * If estimating the size of a full send, use dmu_send_estimate. 5874 */ 5875 error = dmu_send_estimate(tosnap, NULL, compressok || rawok, 5876 &space); 5877 } 5878 5879 fnvlist_add_uint64(outnvl, "space", space); 5880 5881 out: 5882 dsl_dataset_rele(tosnap, FTAG); 5883 dsl_pool_rele(dp, FTAG); 5884 return (error); 5885 } 5886 5887 /* 5888 * Sync the currently open TXG to disk for the specified pool. 5889 * This is somewhat similar to 'zfs_sync()'. 5890 * For cases that do not result in error this ioctl will wait for 5891 * the currently open TXG to commit before returning back to the caller. 5892 * 5893 * innvl: { 5894 * "force" -> when true, force uberblock update even if there is no dirty data. 5895 * In addition this will cause the vdev configuration to be written 5896 * out including updating the zpool cache file. (boolean_t) 5897 * } 5898 * 5899 * onvl is unused 5900 */ 5901 /* ARGSUSED */ 5902 static int 5903 zfs_ioc_pool_sync(const char *pool, nvlist_t *innvl, nvlist_t *onvl) 5904 { 5905 int err; 5906 boolean_t force; 5907 spa_t *spa; 5908 5909 if ((err = spa_open(pool, &spa, FTAG)) != 0) 5910 return (err); 5911 5912 force = fnvlist_lookup_boolean_value(innvl, "force"); 5913 if (force) { 5914 spa_config_enter(spa, SCL_CONFIG, FTAG, RW_WRITER); 5915 vdev_config_dirty(spa->spa_root_vdev); 5916 spa_config_exit(spa, SCL_CONFIG, FTAG); 5917 } 5918 txg_wait_synced(spa_get_dsl(spa), 0); 5919 5920 spa_close(spa, FTAG); 5921 5922 return (err); 5923 } 5924 5925 /* 5926 * Load a user's wrapping key into the kernel. 5927 * innvl: { 5928 * "hidden_args" -> { "wkeydata" -> value } 5929 * raw uint8_t array of encryption wrapping key data (32 bytes) 5930 * (optional) "noop" -> (value ignored) 5931 * presence indicated key should only be verified, not loaded 5932 * } 5933 */ 5934 /* ARGSUSED */ 5935 static int 5936 zfs_ioc_load_key(const char *dsname, nvlist_t *innvl, nvlist_t *outnvl) 5937 { 5938 int ret = 0; 5939 dsl_crypto_params_t *dcp = NULL; 5940 nvlist_t *hidden_args; 5941 boolean_t noop = nvlist_exists(innvl, "noop"); 5942 5943 if (strchr(dsname, '@') != NULL || strchr(dsname, '%') != NULL) { 5944 ret = SET_ERROR(EINVAL); 5945 goto error; 5946 } 5947 5948 ret = nvlist_lookup_nvlist(innvl, ZPOOL_HIDDEN_ARGS, &hidden_args); 5949 if (ret != 0) { 5950 ret = SET_ERROR(EINVAL); 5951 goto error; 5952 } 5953 5954 ret = dsl_crypto_params_create_nvlist(DCP_CMD_NONE, NULL, 5955 hidden_args, &dcp); 5956 if (ret != 0) 5957 goto error; 5958 5959 ret = spa_keystore_load_wkey(dsname, dcp, noop); 5960 if (ret != 0) 5961 goto error; 5962 5963 dsl_crypto_params_free(dcp, noop); 5964 5965 return (0); 5966 5967 error: 5968 dsl_crypto_params_free(dcp, B_TRUE); 5969 return (ret); 5970 } 5971 5972 /* 5973 * Unload a user's wrapping key from the kernel. 5974 * Both innvl and outnvl are unused. 5975 */ 5976 /* ARGSUSED */ 5977 static int 5978 zfs_ioc_unload_key(const char *dsname, nvlist_t *innvl, nvlist_t *outnvl) 5979 { 5980 int ret = 0; 5981 5982 if (strchr(dsname, '@') != NULL || strchr(dsname, '%') != NULL) { 5983 ret = (SET_ERROR(EINVAL)); 5984 goto out; 5985 } 5986 5987 ret = spa_keystore_unload_wkey(dsname); 5988 if (ret != 0) 5989 goto out; 5990 5991 out: 5992 return (ret); 5993 } 5994 5995 /* 5996 * Changes a user's wrapping key used to decrypt a dataset. The keyformat, 5997 * keylocation, pbkdf2salt, and pbkdf2iters properties can also be specified 5998 * here to change how the key is derived in userspace. 5999 * 6000 * innvl: { 6001 * "hidden_args" (optional) -> { "wkeydata" -> value } 6002 * raw uint8_t array of new encryption wrapping key data (32 bytes) 6003 * "props" (optional) -> { prop -> value } 6004 * } 6005 * 6006 * outnvl is unused 6007 */ 6008 /* ARGSUSED */ 6009 static int 6010 zfs_ioc_change_key(const char *dsname, nvlist_t *innvl, nvlist_t *outnvl) 6011 { 6012 int ret; 6013 uint64_t cmd = DCP_CMD_NONE; 6014 dsl_crypto_params_t *dcp = NULL; 6015 nvlist_t *args = NULL, *hidden_args = NULL; 6016 6017 if (strchr(dsname, '@') != NULL || strchr(dsname, '%') != NULL) { 6018 ret = (SET_ERROR(EINVAL)); 6019 goto error; 6020 } 6021 6022 (void) nvlist_lookup_uint64(innvl, "crypt_cmd", &cmd); 6023 (void) nvlist_lookup_nvlist(innvl, "props", &args); 6024 (void) nvlist_lookup_nvlist(innvl, ZPOOL_HIDDEN_ARGS, &hidden_args); 6025 6026 ret = dsl_crypto_params_create_nvlist(cmd, args, hidden_args, &dcp); 6027 if (ret != 0) 6028 goto error; 6029 6030 ret = spa_keystore_change_key(dsname, dcp); 6031 if (ret != 0) 6032 goto error; 6033 6034 dsl_crypto_params_free(dcp, B_FALSE); 6035 6036 return (0); 6037 6038 error: 6039 dsl_crypto_params_free(dcp, B_TRUE); 6040 return (ret); 6041 } 6042 6043 static zfs_ioc_vec_t zfs_ioc_vec[ZFS_IOC_LAST - ZFS_IOC_FIRST]; 6044 6045 static void 6046 zfs_ioctl_register_legacy(zfs_ioc_t ioc, zfs_ioc_legacy_func_t *func, 6047 zfs_secpolicy_func_t *secpolicy, zfs_ioc_namecheck_t namecheck, 6048 boolean_t log_history, zfs_ioc_poolcheck_t pool_check) 6049 { 6050 zfs_ioc_vec_t *vec = &zfs_ioc_vec[ioc - ZFS_IOC_FIRST]; 6051 6052 ASSERT3U(ioc, >=, ZFS_IOC_FIRST); 6053 ASSERT3U(ioc, <, ZFS_IOC_LAST); 6054 ASSERT3P(vec->zvec_legacy_func, ==, NULL); 6055 ASSERT3P(vec->zvec_func, ==, NULL); 6056 6057 vec->zvec_legacy_func = func; 6058 vec->zvec_secpolicy = secpolicy; 6059 vec->zvec_namecheck = namecheck; 6060 vec->zvec_allow_log = log_history; 6061 vec->zvec_pool_check = pool_check; 6062 } 6063 6064 /* 6065 * See the block comment at the beginning of this file for details on 6066 * each argument to this function. 6067 */ 6068 static void 6069 zfs_ioctl_register(const char *name, zfs_ioc_t ioc, zfs_ioc_func_t *func, 6070 zfs_secpolicy_func_t *secpolicy, zfs_ioc_namecheck_t namecheck, 6071 zfs_ioc_poolcheck_t pool_check, boolean_t smush_outnvlist, 6072 boolean_t allow_log) 6073 { 6074 zfs_ioc_vec_t *vec = &zfs_ioc_vec[ioc - ZFS_IOC_FIRST]; 6075 6076 ASSERT3U(ioc, >=, ZFS_IOC_FIRST); 6077 ASSERT3U(ioc, <, ZFS_IOC_LAST); 6078 ASSERT3P(vec->zvec_legacy_func, ==, NULL); 6079 ASSERT3P(vec->zvec_func, ==, NULL); 6080 6081 /* if we are logging, the name must be valid */ 6082 ASSERT(!allow_log || namecheck != NO_NAME); 6083 6084 vec->zvec_name = name; 6085 vec->zvec_func = func; 6086 vec->zvec_secpolicy = secpolicy; 6087 vec->zvec_namecheck = namecheck; 6088 vec->zvec_pool_check = pool_check; 6089 vec->zvec_smush_outnvlist = smush_outnvlist; 6090 vec->zvec_allow_log = allow_log; 6091 } 6092 6093 static void 6094 zfs_ioctl_register_pool(zfs_ioc_t ioc, zfs_ioc_legacy_func_t *func, 6095 zfs_secpolicy_func_t *secpolicy, boolean_t log_history, 6096 zfs_ioc_poolcheck_t pool_check) 6097 { 6098 zfs_ioctl_register_legacy(ioc, func, secpolicy, 6099 POOL_NAME, log_history, pool_check); 6100 } 6101 6102 static void 6103 zfs_ioctl_register_dataset_nolog(zfs_ioc_t ioc, zfs_ioc_legacy_func_t *func, 6104 zfs_secpolicy_func_t *secpolicy, zfs_ioc_poolcheck_t pool_check) 6105 { 6106 zfs_ioctl_register_legacy(ioc, func, secpolicy, 6107 DATASET_NAME, B_FALSE, pool_check); 6108 } 6109 6110 static void 6111 zfs_ioctl_register_pool_modify(zfs_ioc_t ioc, zfs_ioc_legacy_func_t *func) 6112 { 6113 zfs_ioctl_register_legacy(ioc, func, zfs_secpolicy_config, 6114 POOL_NAME, B_TRUE, POOL_CHECK_SUSPENDED | POOL_CHECK_READONLY); 6115 } 6116 6117 static void 6118 zfs_ioctl_register_pool_meta(zfs_ioc_t ioc, zfs_ioc_legacy_func_t *func, 6119 zfs_secpolicy_func_t *secpolicy) 6120 { 6121 zfs_ioctl_register_legacy(ioc, func, secpolicy, 6122 NO_NAME, B_FALSE, POOL_CHECK_NONE); 6123 } 6124 6125 static void 6126 zfs_ioctl_register_dataset_read_secpolicy(zfs_ioc_t ioc, 6127 zfs_ioc_legacy_func_t *func, zfs_secpolicy_func_t *secpolicy) 6128 { 6129 zfs_ioctl_register_legacy(ioc, func, secpolicy, 6130 DATASET_NAME, B_FALSE, POOL_CHECK_SUSPENDED); 6131 } 6132 6133 static void 6134 zfs_ioctl_register_dataset_read(zfs_ioc_t ioc, zfs_ioc_legacy_func_t *func) 6135 { 6136 zfs_ioctl_register_dataset_read_secpolicy(ioc, func, 6137 zfs_secpolicy_read); 6138 } 6139 6140 static void 6141 zfs_ioctl_register_dataset_modify(zfs_ioc_t ioc, zfs_ioc_legacy_func_t *func, 6142 zfs_secpolicy_func_t *secpolicy) 6143 { 6144 zfs_ioctl_register_legacy(ioc, func, secpolicy, 6145 DATASET_NAME, B_TRUE, POOL_CHECK_SUSPENDED | POOL_CHECK_READONLY); 6146 } 6147 6148 static void 6149 zfs_ioctl_init(void) 6150 { 6151 zfs_ioctl_register("snapshot", ZFS_IOC_SNAPSHOT, 6152 zfs_ioc_snapshot, zfs_secpolicy_snapshot, POOL_NAME, 6153 POOL_CHECK_SUSPENDED | POOL_CHECK_READONLY, B_TRUE, B_TRUE); 6154 6155 zfs_ioctl_register("log_history", ZFS_IOC_LOG_HISTORY, 6156 zfs_ioc_log_history, zfs_secpolicy_log_history, NO_NAME, 6157 POOL_CHECK_SUSPENDED | POOL_CHECK_READONLY, B_FALSE, B_FALSE); 6158 6159 zfs_ioctl_register("space_snaps", ZFS_IOC_SPACE_SNAPS, 6160 zfs_ioc_space_snaps, zfs_secpolicy_read, DATASET_NAME, 6161 POOL_CHECK_SUSPENDED, B_FALSE, B_FALSE); 6162 6163 zfs_ioctl_register("send", ZFS_IOC_SEND_NEW, 6164 zfs_ioc_send_new, zfs_secpolicy_send_new, DATASET_NAME, 6165 POOL_CHECK_SUSPENDED, B_FALSE, B_FALSE); 6166 6167 zfs_ioctl_register("send_space", ZFS_IOC_SEND_SPACE, 6168 zfs_ioc_send_space, zfs_secpolicy_read, DATASET_NAME, 6169 POOL_CHECK_SUSPENDED, B_FALSE, B_FALSE); 6170 6171 zfs_ioctl_register("create", ZFS_IOC_CREATE, 6172 zfs_ioc_create, zfs_secpolicy_create_clone, DATASET_NAME, 6173 POOL_CHECK_SUSPENDED | POOL_CHECK_READONLY, B_TRUE, B_TRUE); 6174 6175 zfs_ioctl_register("clone", ZFS_IOC_CLONE, 6176 zfs_ioc_clone, zfs_secpolicy_create_clone, DATASET_NAME, 6177 POOL_CHECK_SUSPENDED | POOL_CHECK_READONLY, B_TRUE, B_TRUE); 6178 6179 zfs_ioctl_register("remap", ZFS_IOC_REMAP, 6180 zfs_ioc_remap, zfs_secpolicy_remap, DATASET_NAME, 6181 POOL_CHECK_SUSPENDED | POOL_CHECK_READONLY, B_FALSE, B_TRUE); 6182 6183 zfs_ioctl_register("destroy_snaps", ZFS_IOC_DESTROY_SNAPS, 6184 zfs_ioc_destroy_snaps, zfs_secpolicy_destroy_snaps, POOL_NAME, 6185 POOL_CHECK_SUSPENDED | POOL_CHECK_READONLY, B_TRUE, B_TRUE); 6186 6187 zfs_ioctl_register("hold", ZFS_IOC_HOLD, 6188 zfs_ioc_hold, zfs_secpolicy_hold, POOL_NAME, 6189 POOL_CHECK_SUSPENDED | POOL_CHECK_READONLY, B_TRUE, B_TRUE); 6190 zfs_ioctl_register("release", ZFS_IOC_RELEASE, 6191 zfs_ioc_release, zfs_secpolicy_release, POOL_NAME, 6192 POOL_CHECK_SUSPENDED | POOL_CHECK_READONLY, B_TRUE, B_TRUE); 6193 6194 zfs_ioctl_register("get_holds", ZFS_IOC_GET_HOLDS, 6195 zfs_ioc_get_holds, zfs_secpolicy_read, DATASET_NAME, 6196 POOL_CHECK_SUSPENDED, B_FALSE, B_FALSE); 6197 6198 zfs_ioctl_register("rollback", ZFS_IOC_ROLLBACK, 6199 zfs_ioc_rollback, zfs_secpolicy_rollback, DATASET_NAME, 6200 POOL_CHECK_SUSPENDED | POOL_CHECK_READONLY, B_FALSE, B_TRUE); 6201 6202 zfs_ioctl_register("bookmark", ZFS_IOC_BOOKMARK, 6203 zfs_ioc_bookmark, zfs_secpolicy_bookmark, POOL_NAME, 6204 POOL_CHECK_SUSPENDED | POOL_CHECK_READONLY, B_TRUE, B_TRUE); 6205 6206 zfs_ioctl_register("get_bookmarks", ZFS_IOC_GET_BOOKMARKS, 6207 zfs_ioc_get_bookmarks, zfs_secpolicy_read, DATASET_NAME, 6208 POOL_CHECK_SUSPENDED, B_FALSE, B_FALSE); 6209 6210 zfs_ioctl_register("destroy_bookmarks", ZFS_IOC_DESTROY_BOOKMARKS, 6211 zfs_ioc_destroy_bookmarks, zfs_secpolicy_destroy_bookmarks, 6212 POOL_NAME, 6213 POOL_CHECK_SUSPENDED | POOL_CHECK_READONLY, B_TRUE, B_TRUE); 6214 6215 zfs_ioctl_register("channel_program", ZFS_IOC_CHANNEL_PROGRAM, 6216 zfs_ioc_channel_program, zfs_secpolicy_config, 6217 POOL_NAME, POOL_CHECK_SUSPENDED | POOL_CHECK_READONLY, B_TRUE, 6218 B_TRUE); 6219 6220 zfs_ioctl_register("zpool_checkpoint", ZFS_IOC_POOL_CHECKPOINT, 6221 zfs_ioc_pool_checkpoint, zfs_secpolicy_config, POOL_NAME, 6222 POOL_CHECK_SUSPENDED | POOL_CHECK_READONLY, B_TRUE, B_TRUE); 6223 6224 zfs_ioctl_register("zpool_discard_checkpoint", 6225 ZFS_IOC_POOL_DISCARD_CHECKPOINT, zfs_ioc_pool_discard_checkpoint, 6226 zfs_secpolicy_config, POOL_NAME, 6227 POOL_CHECK_SUSPENDED | POOL_CHECK_READONLY, B_TRUE, B_TRUE); 6228 6229 zfs_ioctl_register("initialize", ZFS_IOC_POOL_INITIALIZE, 6230 zfs_ioc_pool_initialize, zfs_secpolicy_config, POOL_NAME, 6231 POOL_CHECK_SUSPENDED | POOL_CHECK_READONLY, B_TRUE, B_TRUE); 6232 6233 zfs_ioctl_register("sync", ZFS_IOC_POOL_SYNC, 6234 zfs_ioc_pool_sync, zfs_secpolicy_none, POOL_NAME, 6235 POOL_CHECK_SUSPENDED | POOL_CHECK_READONLY, B_FALSE, B_FALSE); 6236 6237 zfs_ioctl_register("load-key", ZFS_IOC_LOAD_KEY, 6238 zfs_ioc_load_key, zfs_secpolicy_load_key, 6239 DATASET_NAME, POOL_CHECK_SUSPENDED, B_TRUE, B_TRUE); 6240 zfs_ioctl_register("unload-key", ZFS_IOC_UNLOAD_KEY, 6241 zfs_ioc_unload_key, zfs_secpolicy_load_key, 6242 DATASET_NAME, POOL_CHECK_SUSPENDED, B_TRUE, B_TRUE); 6243 zfs_ioctl_register("change-key", ZFS_IOC_CHANGE_KEY, 6244 zfs_ioc_change_key, zfs_secpolicy_change_key, 6245 DATASET_NAME, POOL_CHECK_SUSPENDED | POOL_CHECK_READONLY, 6246 B_TRUE, B_TRUE); 6247 6248 /* IOCTLS that use the legacy function signature */ 6249 6250 zfs_ioctl_register_legacy(ZFS_IOC_POOL_FREEZE, zfs_ioc_pool_freeze, 6251 zfs_secpolicy_config, NO_NAME, B_FALSE, POOL_CHECK_READONLY); 6252 6253 zfs_ioctl_register_pool(ZFS_IOC_POOL_CREATE, zfs_ioc_pool_create, 6254 zfs_secpolicy_config, B_TRUE, POOL_CHECK_NONE); 6255 zfs_ioctl_register_pool_modify(ZFS_IOC_POOL_SCAN, 6256 zfs_ioc_pool_scan); 6257 zfs_ioctl_register_pool_modify(ZFS_IOC_POOL_UPGRADE, 6258 zfs_ioc_pool_upgrade); 6259 zfs_ioctl_register_pool_modify(ZFS_IOC_VDEV_ADD, 6260 zfs_ioc_vdev_add); 6261 zfs_ioctl_register_pool_modify(ZFS_IOC_VDEV_REMOVE, 6262 zfs_ioc_vdev_remove); 6263 zfs_ioctl_register_pool_modify(ZFS_IOC_VDEV_SET_STATE, 6264 zfs_ioc_vdev_set_state); 6265 zfs_ioctl_register_pool_modify(ZFS_IOC_VDEV_ATTACH, 6266 zfs_ioc_vdev_attach); 6267 zfs_ioctl_register_pool_modify(ZFS_IOC_VDEV_DETACH, 6268 zfs_ioc_vdev_detach); 6269 zfs_ioctl_register_pool_modify(ZFS_IOC_VDEV_SETPATH, 6270 zfs_ioc_vdev_setpath); 6271 zfs_ioctl_register_pool_modify(ZFS_IOC_VDEV_SETFRU, 6272 zfs_ioc_vdev_setfru); 6273 zfs_ioctl_register_pool_modify(ZFS_IOC_POOL_SET_PROPS, 6274 zfs_ioc_pool_set_props); 6275 zfs_ioctl_register_pool_modify(ZFS_IOC_VDEV_SPLIT, 6276 zfs_ioc_vdev_split); 6277 zfs_ioctl_register_pool_modify(ZFS_IOC_POOL_REGUID, 6278 zfs_ioc_pool_reguid); 6279 6280 zfs_ioctl_register_pool_meta(ZFS_IOC_POOL_CONFIGS, 6281 zfs_ioc_pool_configs, zfs_secpolicy_none); 6282 zfs_ioctl_register_pool_meta(ZFS_IOC_POOL_TRYIMPORT, 6283 zfs_ioc_pool_tryimport, zfs_secpolicy_config); 6284 zfs_ioctl_register_pool_meta(ZFS_IOC_INJECT_FAULT, 6285 zfs_ioc_inject_fault, zfs_secpolicy_inject); 6286 zfs_ioctl_register_pool_meta(ZFS_IOC_CLEAR_FAULT, 6287 zfs_ioc_clear_fault, zfs_secpolicy_inject); 6288 zfs_ioctl_register_pool_meta(ZFS_IOC_INJECT_LIST_NEXT, 6289 zfs_ioc_inject_list_next, zfs_secpolicy_inject); 6290 6291 /* 6292 * pool destroy, and export don't log the history as part of 6293 * zfsdev_ioctl, but rather zfs_ioc_pool_export 6294 * does the logging of those commands. 6295 */ 6296 zfs_ioctl_register_pool(ZFS_IOC_POOL_DESTROY, zfs_ioc_pool_destroy, 6297 zfs_secpolicy_config, B_FALSE, POOL_CHECK_NONE); 6298 zfs_ioctl_register_pool(ZFS_IOC_POOL_EXPORT, zfs_ioc_pool_export, 6299 zfs_secpolicy_config, B_FALSE, POOL_CHECK_NONE); 6300 6301 zfs_ioctl_register_pool(ZFS_IOC_POOL_STATS, zfs_ioc_pool_stats, 6302 zfs_secpolicy_read, B_FALSE, POOL_CHECK_NONE); 6303 zfs_ioctl_register_pool(ZFS_IOC_POOL_GET_PROPS, zfs_ioc_pool_get_props, 6304 zfs_secpolicy_read, B_FALSE, POOL_CHECK_NONE); 6305 6306 zfs_ioctl_register_pool(ZFS_IOC_ERROR_LOG, zfs_ioc_error_log, 6307 zfs_secpolicy_inject, B_FALSE, POOL_CHECK_SUSPENDED); 6308 zfs_ioctl_register_pool(ZFS_IOC_DSOBJ_TO_DSNAME, 6309 zfs_ioc_dsobj_to_dsname, 6310 zfs_secpolicy_diff, B_FALSE, POOL_CHECK_SUSPENDED); 6311 zfs_ioctl_register_pool(ZFS_IOC_POOL_GET_HISTORY, 6312 zfs_ioc_pool_get_history, 6313 zfs_secpolicy_config, B_FALSE, POOL_CHECK_SUSPENDED); 6314 6315 zfs_ioctl_register_pool(ZFS_IOC_POOL_IMPORT, zfs_ioc_pool_import, 6316 zfs_secpolicy_config, B_TRUE, POOL_CHECK_NONE); 6317 6318 zfs_ioctl_register_pool(ZFS_IOC_CLEAR, zfs_ioc_clear, 6319 zfs_secpolicy_config, B_TRUE, POOL_CHECK_READONLY); 6320 zfs_ioctl_register_pool(ZFS_IOC_POOL_REOPEN, zfs_ioc_pool_reopen, 6321 zfs_secpolicy_config, B_TRUE, POOL_CHECK_SUSPENDED); 6322 6323 zfs_ioctl_register_dataset_read(ZFS_IOC_SPACE_WRITTEN, 6324 zfs_ioc_space_written); 6325 zfs_ioctl_register_dataset_read(ZFS_IOC_OBJSET_RECVD_PROPS, 6326 zfs_ioc_objset_recvd_props); 6327 zfs_ioctl_register_dataset_read(ZFS_IOC_NEXT_OBJ, 6328 zfs_ioc_next_obj); 6329 zfs_ioctl_register_dataset_read(ZFS_IOC_GET_FSACL, 6330 zfs_ioc_get_fsacl); 6331 zfs_ioctl_register_dataset_read(ZFS_IOC_OBJSET_STATS, 6332 zfs_ioc_objset_stats); 6333 zfs_ioctl_register_dataset_read(ZFS_IOC_OBJSET_ZPLPROPS, 6334 zfs_ioc_objset_zplprops); 6335 zfs_ioctl_register_dataset_read(ZFS_IOC_DATASET_LIST_NEXT, 6336 zfs_ioc_dataset_list_next); 6337 zfs_ioctl_register_dataset_read(ZFS_IOC_SNAPSHOT_LIST_NEXT, 6338 zfs_ioc_snapshot_list_next); 6339 zfs_ioctl_register_dataset_read(ZFS_IOC_SEND_PROGRESS, 6340 zfs_ioc_send_progress); 6341 6342 zfs_ioctl_register_dataset_read_secpolicy(ZFS_IOC_DIFF, 6343 zfs_ioc_diff, zfs_secpolicy_diff); 6344 zfs_ioctl_register_dataset_read_secpolicy(ZFS_IOC_OBJ_TO_STATS, 6345 zfs_ioc_obj_to_stats, zfs_secpolicy_diff); 6346 zfs_ioctl_register_dataset_read_secpolicy(ZFS_IOC_OBJ_TO_PATH, 6347 zfs_ioc_obj_to_path, zfs_secpolicy_diff); 6348 zfs_ioctl_register_dataset_read_secpolicy(ZFS_IOC_USERSPACE_ONE, 6349 zfs_ioc_userspace_one, zfs_secpolicy_userspace_one); 6350 zfs_ioctl_register_dataset_read_secpolicy(ZFS_IOC_USERSPACE_MANY, 6351 zfs_ioc_userspace_many, zfs_secpolicy_userspace_many); 6352 zfs_ioctl_register_dataset_read_secpolicy(ZFS_IOC_SEND, 6353 zfs_ioc_send, zfs_secpolicy_send); 6354 6355 zfs_ioctl_register_dataset_modify(ZFS_IOC_SET_PROP, zfs_ioc_set_prop, 6356 zfs_secpolicy_none); 6357 zfs_ioctl_register_dataset_modify(ZFS_IOC_DESTROY, zfs_ioc_destroy, 6358 zfs_secpolicy_destroy); 6359 zfs_ioctl_register_dataset_modify(ZFS_IOC_RENAME, zfs_ioc_rename, 6360 zfs_secpolicy_rename); 6361 zfs_ioctl_register_dataset_modify(ZFS_IOC_RECV, zfs_ioc_recv, 6362 zfs_secpolicy_recv); 6363 zfs_ioctl_register_dataset_modify(ZFS_IOC_PROMOTE, zfs_ioc_promote, 6364 zfs_secpolicy_promote); 6365 zfs_ioctl_register_dataset_modify(ZFS_IOC_INHERIT_PROP, 6366 zfs_ioc_inherit_prop, zfs_secpolicy_inherit_prop); 6367 zfs_ioctl_register_dataset_modify(ZFS_IOC_SET_FSACL, zfs_ioc_set_fsacl, 6368 zfs_secpolicy_set_fsacl); 6369 6370 zfs_ioctl_register_dataset_nolog(ZFS_IOC_SHARE, zfs_ioc_share, 6371 zfs_secpolicy_share, POOL_CHECK_NONE); 6372 zfs_ioctl_register_dataset_nolog(ZFS_IOC_SMB_ACL, zfs_ioc_smb_acl, 6373 zfs_secpolicy_smb_acl, POOL_CHECK_NONE); 6374 zfs_ioctl_register_dataset_nolog(ZFS_IOC_USERSPACE_UPGRADE, 6375 zfs_ioc_userspace_upgrade, zfs_secpolicy_userspace_upgrade, 6376 POOL_CHECK_SUSPENDED | POOL_CHECK_READONLY); 6377 zfs_ioctl_register_dataset_nolog(ZFS_IOC_TMP_SNAPSHOT, 6378 zfs_ioc_tmp_snapshot, zfs_secpolicy_tmp_snapshot, 6379 POOL_CHECK_SUSPENDED | POOL_CHECK_READONLY); 6380 } 6381 6382 int 6383 pool_status_check(const char *name, zfs_ioc_namecheck_t type, 6384 zfs_ioc_poolcheck_t check) 6385 { 6386 spa_t *spa; 6387 int error; 6388 6389 ASSERT(type == POOL_NAME || type == DATASET_NAME); 6390 6391 if (check & POOL_CHECK_NONE) 6392 return (0); 6393 6394 error = spa_open(name, &spa, FTAG); 6395 if (error == 0) { 6396 if ((check & POOL_CHECK_SUSPENDED) && spa_suspended(spa)) 6397 error = SET_ERROR(EAGAIN); 6398 else if ((check & POOL_CHECK_READONLY) && !spa_writeable(spa)) 6399 error = SET_ERROR(EROFS); 6400 spa_close(spa, FTAG); 6401 } 6402 return (error); 6403 } 6404 6405 /* 6406 * Find a free minor number. 6407 */ 6408 minor_t 6409 zfsdev_minor_alloc(void) 6410 { 6411 static minor_t last_minor; 6412 minor_t m; 6413 6414 ASSERT(MUTEX_HELD(&zfsdev_state_lock)); 6415 6416 for (m = last_minor + 1; m != last_minor; m++) { 6417 if (m > ZFSDEV_MAX_MINOR) 6418 m = 1; 6419 if (ddi_get_soft_state(zfsdev_state, m) == NULL) { 6420 last_minor = m; 6421 return (m); 6422 } 6423 } 6424 6425 return (0); 6426 } 6427 6428 static int 6429 zfs_ctldev_init(dev_t *devp) 6430 { 6431 minor_t minor; 6432 zfs_soft_state_t *zs; 6433 6434 ASSERT(MUTEX_HELD(&zfsdev_state_lock)); 6435 ASSERT(getminor(*devp) == 0); 6436 6437 minor = zfsdev_minor_alloc(); 6438 if (minor == 0) 6439 return (SET_ERROR(ENXIO)); 6440 6441 if (ddi_soft_state_zalloc(zfsdev_state, minor) != DDI_SUCCESS) 6442 return (SET_ERROR(EAGAIN)); 6443 6444 *devp = makedevice(getemajor(*devp), minor); 6445 6446 zs = ddi_get_soft_state(zfsdev_state, minor); 6447 zs->zss_type = ZSST_CTLDEV; 6448 zfs_onexit_init((zfs_onexit_t **)&zs->zss_data); 6449 6450 return (0); 6451 } 6452 6453 static void 6454 zfs_ctldev_destroy(zfs_onexit_t *zo, minor_t minor) 6455 { 6456 ASSERT(MUTEX_HELD(&zfsdev_state_lock)); 6457 6458 zfs_onexit_destroy(zo); 6459 ddi_soft_state_free(zfsdev_state, minor); 6460 } 6461 6462 void * 6463 zfsdev_get_soft_state(minor_t minor, enum zfs_soft_state_type which) 6464 { 6465 zfs_soft_state_t *zp; 6466 6467 zp = ddi_get_soft_state(zfsdev_state, minor); 6468 if (zp == NULL || zp->zss_type != which) 6469 return (NULL); 6470 6471 return (zp->zss_data); 6472 } 6473 6474 static int 6475 zfsdev_open(dev_t *devp, int flag, int otyp, cred_t *cr) 6476 { 6477 int error = 0; 6478 6479 if (getminor(*devp) != 0) 6480 return (zvol_open(devp, flag, otyp, cr)); 6481 6482 /* This is the control device. Allocate a new minor if requested. */ 6483 if (flag & FEXCL) { 6484 mutex_enter(&zfsdev_state_lock); 6485 error = zfs_ctldev_init(devp); 6486 mutex_exit(&zfsdev_state_lock); 6487 } 6488 6489 return (error); 6490 } 6491 6492 static int 6493 zfsdev_close(dev_t dev, int flag, int otyp, cred_t *cr) 6494 { 6495 zfs_onexit_t *zo; 6496 minor_t minor = getminor(dev); 6497 6498 if (minor == 0) 6499 return (0); 6500 6501 mutex_enter(&zfsdev_state_lock); 6502 zo = zfsdev_get_soft_state(minor, ZSST_CTLDEV); 6503 if (zo == NULL) { 6504 mutex_exit(&zfsdev_state_lock); 6505 return (zvol_close(dev, flag, otyp, cr)); 6506 } 6507 zfs_ctldev_destroy(zo, minor); 6508 mutex_exit(&zfsdev_state_lock); 6509 6510 return (0); 6511 } 6512 6513 static int 6514 zfsdev_ioctl(dev_t dev, int cmd, intptr_t arg, int flag, cred_t *cr, int *rvalp) 6515 { 6516 zfs_cmd_t *zc; 6517 uint_t vecnum; 6518 int error, rc, len; 6519 minor_t minor = getminor(dev); 6520 const zfs_ioc_vec_t *vec; 6521 char *saved_poolname = NULL; 6522 nvlist_t *innvl = NULL; 6523 6524 if (minor != 0 && 6525 zfsdev_get_soft_state(minor, ZSST_CTLDEV) == NULL) 6526 return (zvol_ioctl(dev, cmd, arg, flag, cr, rvalp)); 6527 6528 vecnum = cmd - ZFS_IOC_FIRST; 6529 ASSERT3U(getmajor(dev), ==, ddi_driver_major(zfs_dip)); 6530 6531 if (vecnum >= sizeof (zfs_ioc_vec) / sizeof (zfs_ioc_vec[0])) 6532 return (SET_ERROR(EINVAL)); 6533 vec = &zfs_ioc_vec[vecnum]; 6534 6535 zc = kmem_zalloc(sizeof (zfs_cmd_t), KM_SLEEP); 6536 6537 error = ddi_copyin((void *)arg, zc, sizeof (zfs_cmd_t), flag); 6538 if (error != 0) { 6539 error = SET_ERROR(EFAULT); 6540 goto out; 6541 } 6542 6543 zc->zc_iflags = flag & FKIOCTL; 6544 if (zc->zc_nvlist_src_size != 0) { 6545 error = get_nvlist(zc->zc_nvlist_src, zc->zc_nvlist_src_size, 6546 zc->zc_iflags, &innvl); 6547 if (error != 0) 6548 goto out; 6549 } 6550 6551 /* 6552 * Ensure that all pool/dataset names are valid before we pass down to 6553 * the lower layers. 6554 */ 6555 zc->zc_name[sizeof (zc->zc_name) - 1] = '\0'; 6556 switch (vec->zvec_namecheck) { 6557 case POOL_NAME: 6558 if (pool_namecheck(zc->zc_name, NULL, NULL) != 0) 6559 error = SET_ERROR(EINVAL); 6560 else 6561 error = pool_status_check(zc->zc_name, 6562 vec->zvec_namecheck, vec->zvec_pool_check); 6563 break; 6564 6565 case DATASET_NAME: 6566 if (dataset_namecheck(zc->zc_name, NULL, NULL) != 0) 6567 error = SET_ERROR(EINVAL); 6568 else 6569 error = pool_status_check(zc->zc_name, 6570 vec->zvec_namecheck, vec->zvec_pool_check); 6571 break; 6572 6573 case NO_NAME: 6574 break; 6575 } 6576 6577 6578 if (error == 0) 6579 error = vec->zvec_secpolicy(zc, innvl, cr); 6580 6581 if (error != 0) 6582 goto out; 6583 6584 /* legacy ioctls can modify zc_name */ 6585 len = strcspn(zc->zc_name, "/@#") + 1; 6586 saved_poolname = kmem_alloc(len, KM_SLEEP); 6587 (void) strlcpy(saved_poolname, zc->zc_name, len); 6588 6589 if (vec->zvec_func != NULL) { 6590 nvlist_t *outnvl; 6591 int puterror = 0; 6592 spa_t *spa; 6593 nvlist_t *lognv = NULL; 6594 6595 ASSERT(vec->zvec_legacy_func == NULL); 6596 6597 /* 6598 * Add the innvl to the lognv before calling the func, 6599 * in case the func changes the innvl. 6600 */ 6601 if (vec->zvec_allow_log) { 6602 lognv = fnvlist_alloc(); 6603 fnvlist_add_string(lognv, ZPOOL_HIST_IOCTL, 6604 vec->zvec_name); 6605 if (!nvlist_empty(innvl)) { 6606 fnvlist_add_nvlist(lognv, ZPOOL_HIST_INPUT_NVL, 6607 innvl); 6608 } 6609 } 6610 6611 outnvl = fnvlist_alloc(); 6612 error = vec->zvec_func(zc->zc_name, innvl, outnvl); 6613 6614 /* 6615 * Some commands can partially execute, modify state, and still 6616 * return an error. In these cases, attempt to record what 6617 * was modified. 6618 */ 6619 if ((error == 0 || 6620 (cmd == ZFS_IOC_CHANNEL_PROGRAM && error != EINVAL)) && 6621 vec->zvec_allow_log && 6622 spa_open(zc->zc_name, &spa, FTAG) == 0) { 6623 if (!nvlist_empty(outnvl)) { 6624 fnvlist_add_nvlist(lognv, ZPOOL_HIST_OUTPUT_NVL, 6625 outnvl); 6626 } 6627 if (error != 0) { 6628 fnvlist_add_int64(lognv, ZPOOL_HIST_ERRNO, 6629 error); 6630 } 6631 (void) spa_history_log_nvl(spa, lognv); 6632 spa_close(spa, FTAG); 6633 } 6634 fnvlist_free(lognv); 6635 6636 if (!nvlist_empty(outnvl) || zc->zc_nvlist_dst_size != 0) { 6637 int smusherror = 0; 6638 if (vec->zvec_smush_outnvlist) { 6639 smusherror = nvlist_smush(outnvl, 6640 zc->zc_nvlist_dst_size); 6641 } 6642 if (smusherror == 0) 6643 puterror = put_nvlist(zc, outnvl); 6644 } 6645 6646 if (puterror != 0) 6647 error = puterror; 6648 6649 nvlist_free(outnvl); 6650 } else { 6651 error = vec->zvec_legacy_func(zc); 6652 } 6653 6654 out: 6655 nvlist_free(innvl); 6656 rc = ddi_copyout(zc, (void *)arg, sizeof (zfs_cmd_t), flag); 6657 if (error == 0 && rc != 0) 6658 error = SET_ERROR(EFAULT); 6659 if (error == 0 && vec->zvec_allow_log) { 6660 char *s = tsd_get(zfs_allow_log_key); 6661 if (s != NULL) 6662 strfree(s); 6663 (void) tsd_set(zfs_allow_log_key, saved_poolname); 6664 } else { 6665 if (saved_poolname != NULL) 6666 strfree(saved_poolname); 6667 } 6668 6669 kmem_free(zc, sizeof (zfs_cmd_t)); 6670 return (error); 6671 } 6672 6673 static int 6674 zfs_attach(dev_info_t *dip, ddi_attach_cmd_t cmd) 6675 { 6676 if (cmd != DDI_ATTACH) 6677 return (DDI_FAILURE); 6678 6679 if (ddi_create_minor_node(dip, "zfs", S_IFCHR, 0, 6680 DDI_PSEUDO, 0) == DDI_FAILURE) 6681 return (DDI_FAILURE); 6682 6683 zfs_dip = dip; 6684 6685 ddi_report_dev(dip); 6686 6687 return (DDI_SUCCESS); 6688 } 6689 6690 static int 6691 zfs_detach(dev_info_t *dip, ddi_detach_cmd_t cmd) 6692 { 6693 if (spa_busy() || zfs_busy() || zvol_busy()) 6694 return (DDI_FAILURE); 6695 6696 if (cmd != DDI_DETACH) 6697 return (DDI_FAILURE); 6698 6699 zfs_dip = NULL; 6700 6701 ddi_prop_remove_all(dip); 6702 ddi_remove_minor_node(dip, NULL); 6703 6704 return (DDI_SUCCESS); 6705 } 6706 6707 /*ARGSUSED*/ 6708 static int 6709 zfs_info(dev_info_t *dip, ddi_info_cmd_t infocmd, void *arg, void **result) 6710 { 6711 switch (infocmd) { 6712 case DDI_INFO_DEVT2DEVINFO: 6713 *result = zfs_dip; 6714 return (DDI_SUCCESS); 6715 6716 case DDI_INFO_DEVT2INSTANCE: 6717 *result = (void *)0; 6718 return (DDI_SUCCESS); 6719 } 6720 6721 return (DDI_FAILURE); 6722 } 6723 6724 /* 6725 * OK, so this is a little weird. 6726 * 6727 * /dev/zfs is the control node, i.e. minor 0. 6728 * /dev/zvol/[r]dsk/pool/dataset are the zvols, minor > 0. 6729 * 6730 * /dev/zfs has basically nothing to do except serve up ioctls, 6731 * so most of the standard driver entry points are in zvol.c. 6732 */ 6733 static struct cb_ops zfs_cb_ops = { 6734 zfsdev_open, /* open */ 6735 zfsdev_close, /* close */ 6736 zvol_strategy, /* strategy */ 6737 nodev, /* print */ 6738 zvol_dump, /* dump */ 6739 zvol_read, /* read */ 6740 zvol_write, /* write */ 6741 zfsdev_ioctl, /* ioctl */ 6742 nodev, /* devmap */ 6743 nodev, /* mmap */ 6744 nodev, /* segmap */ 6745 nochpoll, /* poll */ 6746 ddi_prop_op, /* prop_op */ 6747 NULL, /* streamtab */ 6748 D_NEW | D_MP | D_64BIT, /* Driver compatibility flag */ 6749 CB_REV, /* version */ 6750 nodev, /* async read */ 6751 nodev, /* async write */ 6752 }; 6753 6754 static struct dev_ops zfs_dev_ops = { 6755 DEVO_REV, /* version */ 6756 0, /* refcnt */ 6757 zfs_info, /* info */ 6758 nulldev, /* identify */ 6759 nulldev, /* probe */ 6760 zfs_attach, /* attach */ 6761 zfs_detach, /* detach */ 6762 nodev, /* reset */ 6763 &zfs_cb_ops, /* driver operations */ 6764 NULL, /* no bus operations */ 6765 NULL, /* power */ 6766 ddi_quiesce_not_needed, /* quiesce */ 6767 }; 6768 6769 static struct modldrv zfs_modldrv = { 6770 &mod_driverops, 6771 "ZFS storage pool", 6772 &zfs_dev_ops 6773 }; 6774 6775 static struct modlinkage modlinkage = { 6776 MODREV_1, 6777 (void *)&zfs_modlfs, 6778 (void *)&zfs_modldrv, 6779 NULL 6780 }; 6781 6782 static void 6783 zfs_allow_log_destroy(void *arg) 6784 { 6785 char *poolname = arg; 6786 strfree(poolname); 6787 } 6788 6789 int 6790 _init(void) 6791 { 6792 int error; 6793 6794 spa_init(FREAD | FWRITE); 6795 zfs_init(); 6796 zvol_init(); 6797 zfs_ioctl_init(); 6798 6799 if ((error = mod_install(&modlinkage)) != 0) { 6800 zvol_fini(); 6801 zfs_fini(); 6802 spa_fini(); 6803 return (error); 6804 } 6805 6806 tsd_create(&zfs_fsyncer_key, NULL); 6807 tsd_create(&rrw_tsd_key, rrw_tsd_destroy); 6808 tsd_create(&zfs_allow_log_key, zfs_allow_log_destroy); 6809 6810 error = ldi_ident_from_mod(&modlinkage, &zfs_li); 6811 ASSERT(error == 0); 6812 mutex_init(&zfs_share_lock, NULL, MUTEX_DEFAULT, NULL); 6813 6814 return (0); 6815 } 6816 6817 int 6818 _fini(void) 6819 { 6820 int error; 6821 6822 if (spa_busy() || zfs_busy() || zvol_busy() || zio_injection_enabled) 6823 return (SET_ERROR(EBUSY)); 6824 6825 if ((error = mod_remove(&modlinkage)) != 0) 6826 return (error); 6827 6828 zvol_fini(); 6829 zfs_fini(); 6830 spa_fini(); 6831 if (zfs_nfsshare_inited) 6832 (void) ddi_modclose(nfs_mod); 6833 if (zfs_smbshare_inited) 6834 (void) ddi_modclose(smbsrv_mod); 6835 if (zfs_nfsshare_inited || zfs_smbshare_inited) 6836 (void) ddi_modclose(sharefs_mod); 6837 6838 tsd_destroy(&zfs_fsyncer_key); 6839 ldi_ident_release(zfs_li); 6840 zfs_li = NULL; 6841 mutex_destroy(&zfs_share_lock); 6842 6843 return (error); 6844 } 6845 6846 int 6847 _info(struct modinfo *modinfop) 6848 { 6849 return (mod_info(&modlinkage, modinfop)); 6850 } 6851