zfs_ioctl.c revision 289299
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 <pawel@dawidek.net>. 25 * All rights reserved. 26 * Copyright 2013 Martin Matuska <mm@FreeBSD.org>. All rights reserved. 27 * Copyright 2014 Xin Li <delphij@FreeBSD.org>. All rights reserved. 28 * Copyright 2015 Nexenta Systems, Inc. All rights reserved. 29 * Copyright (c) 2014, Joyent, Inc. All rights reserved. 30 * Copyright (c) 2011, 2015 by Delphix. All rights reserved. 31 * Copyright (c) 2013 by Saso Kiselkov. All rights reserved. 32 * Copyright (c) 2013 Steven Hartland. All rights reserved. 33 */ 34 35/* 36 * ZFS ioctls. 37 * 38 * This file handles the ioctls to /dev/zfs, used for configuring ZFS storage 39 * pools and filesystems, e.g. with /sbin/zfs and /sbin/zpool. 40 * 41 * There are two ways that we handle ioctls: the legacy way where almost 42 * all of the logic is in the ioctl callback, and the new way where most 43 * of the marshalling is handled in the common entry point, zfsdev_ioctl(). 44 * 45 * Non-legacy ioctls should be registered by calling 46 * zfs_ioctl_register() from zfs_ioctl_init(). The ioctl is invoked 47 * from userland by lzc_ioctl(). 48 * 49 * The registration arguments are as follows: 50 * 51 * const char *name 52 * The name of the ioctl. This is used for history logging. If the 53 * ioctl returns successfully (the callback returns 0), and allow_log 54 * is true, then a history log entry will be recorded with the input & 55 * output nvlists. The log entry can be printed with "zpool history -i". 56 * 57 * zfs_ioc_t ioc 58 * The ioctl request number, which userland will pass to ioctl(2). 59 * The ioctl numbers can change from release to release, because 60 * the caller (libzfs) must be matched to the kernel. 61 * 62 * zfs_secpolicy_func_t *secpolicy 63 * This function will be called before the zfs_ioc_func_t, to 64 * determine if this operation is permitted. It should return EPERM 65 * on failure, and 0 on success. Checks include determining if the 66 * dataset is visible in this zone, and if the user has either all 67 * zfs privileges in the zone (SYS_MOUNT), or has been granted permission 68 * to do this operation on this dataset with "zfs allow". 69 * 70 * zfs_ioc_namecheck_t namecheck 71 * This specifies what to expect in the zfs_cmd_t:zc_name -- a pool 72 * name, a dataset name, or nothing. If the name is not well-formed, 73 * the ioctl will fail and the callback will not be called. 74 * Therefore, the callback can assume that the name is well-formed 75 * (e.g. is null-terminated, doesn't have more than one '@' character, 76 * doesn't have invalid characters). 77 * 78 * zfs_ioc_poolcheck_t pool_check 79 * This specifies requirements on the pool state. If the pool does 80 * not meet them (is suspended or is readonly), the ioctl will fail 81 * and the callback will not be called. If any checks are specified 82 * (i.e. it is not POOL_CHECK_NONE), namecheck must not be NO_NAME. 83 * Multiple checks can be or-ed together (e.g. POOL_CHECK_SUSPENDED | 84 * POOL_CHECK_READONLY). 85 * 86 * boolean_t smush_outnvlist 87 * If smush_outnvlist is true, then the output is presumed to be a 88 * list of errors, and it will be "smushed" down to fit into the 89 * caller's buffer, by removing some entries and replacing them with a 90 * single "N_MORE_ERRORS" entry indicating how many were removed. See 91 * nvlist_smush() for details. If smush_outnvlist is false, and the 92 * outnvlist does not fit into the userland-provided buffer, then the 93 * ioctl will fail with ENOMEM. 94 * 95 * zfs_ioc_func_t *func 96 * The callback function that will perform the operation. 97 * 98 * The callback should return 0 on success, or an error number on 99 * failure. If the function fails, the userland ioctl will return -1, 100 * and errno will be set to the callback's return value. The callback 101 * will be called with the following arguments: 102 * 103 * const char *name 104 * The name of the pool or dataset to operate on, from 105 * zfs_cmd_t:zc_name. The 'namecheck' argument specifies the 106 * expected type (pool, dataset, or none). 107 * 108 * nvlist_t *innvl 109 * The input nvlist, deserialized from zfs_cmd_t:zc_nvlist_src. Or 110 * NULL if no input nvlist was provided. Changes to this nvlist are 111 * ignored. If the input nvlist could not be deserialized, the 112 * ioctl will fail and the callback will not be called. 113 * 114 * nvlist_t *outnvl 115 * The output nvlist, initially empty. The callback can fill it in, 116 * and it will be returned to userland by serializing it into 117 * zfs_cmd_t:zc_nvlist_dst. If it is non-empty, and serialization 118 * fails (e.g. because the caller didn't supply a large enough 119 * buffer), then the overall ioctl will fail. See the 120 * 'smush_nvlist' argument above for additional behaviors. 121 * 122 * There are two typical uses of the output nvlist: 123 * - To return state, e.g. property values. In this case, 124 * smush_outnvlist should be false. If the buffer was not large 125 * enough, the caller will reallocate a larger buffer and try 126 * the ioctl again. 127 * 128 * - To return multiple errors from an ioctl which makes on-disk 129 * changes. In this case, smush_outnvlist should be true. 130 * Ioctls which make on-disk modifications should generally not 131 * use the outnvl if they succeed, because the caller can not 132 * distinguish between the operation failing, and 133 * deserialization failing. 134 */ 135#ifdef __FreeBSD__ 136#include "opt_kstack_pages.h" 137#endif 138 139#include <sys/types.h> 140#include <sys/param.h> 141#include <sys/systm.h> 142#include <sys/conf.h> 143#include <sys/kernel.h> 144#include <sys/lock.h> 145#include <sys/malloc.h> 146#include <sys/mutex.h> 147#include <sys/proc.h> 148#include <sys/errno.h> 149#include <sys/uio.h> 150#include <sys/buf.h> 151#include <sys/file.h> 152#include <sys/kmem.h> 153#include <sys/conf.h> 154#include <sys/cmn_err.h> 155#include <sys/stat.h> 156#include <sys/zfs_ioctl.h> 157#include <sys/zfs_vfsops.h> 158#include <sys/zfs_znode.h> 159#include <sys/zap.h> 160#include <sys/spa.h> 161#include <sys/spa_impl.h> 162#include <sys/vdev.h> 163#include <sys/dmu.h> 164#include <sys/dsl_dir.h> 165#include <sys/dsl_dataset.h> 166#include <sys/dsl_prop.h> 167#include <sys/dsl_deleg.h> 168#include <sys/dmu_objset.h> 169#include <sys/dmu_impl.h> 170#include <sys/dmu_tx.h> 171#include <sys/sunddi.h> 172#include <sys/policy.h> 173#include <sys/zone.h> 174#include <sys/nvpair.h> 175#include <sys/mount.h> 176#include <sys/taskqueue.h> 177#include <sys/sdt.h> 178#include <sys/varargs.h> 179#include <sys/fs/zfs.h> 180#include <sys/zfs_ctldir.h> 181#include <sys/zfs_dir.h> 182#include <sys/zfs_onexit.h> 183#include <sys/zvol.h> 184#include <sys/dsl_scan.h> 185#include <sys/dmu_objset.h> 186#include <sys/dmu_send.h> 187#include <sys/dsl_destroy.h> 188#include <sys/dsl_bookmark.h> 189#include <sys/dsl_userhold.h> 190#include <sys/zfeature.h> 191 192#include "zfs_namecheck.h" 193#include "zfs_prop.h" 194#include "zfs_deleg.h" 195#include "zfs_comutil.h" 196#include "zfs_ioctl_compat.h" 197 198CTASSERT(sizeof(zfs_cmd_t) < IOCPARM_MAX); 199 200static struct cdev *zfsdev; 201 202extern void zfs_init(void); 203extern void zfs_fini(void); 204 205uint_t zfs_fsyncer_key; 206extern uint_t rrw_tsd_key; 207static uint_t zfs_allow_log_key; 208 209typedef int zfs_ioc_legacy_func_t(zfs_cmd_t *); 210typedef int zfs_ioc_func_t(const char *, nvlist_t *, nvlist_t *); 211typedef int zfs_secpolicy_func_t(zfs_cmd_t *, nvlist_t *, cred_t *); 212 213typedef enum { 214 NO_NAME, 215 POOL_NAME, 216 DATASET_NAME 217} zfs_ioc_namecheck_t; 218 219typedef enum { 220 POOL_CHECK_NONE = 1 << 0, 221 POOL_CHECK_SUSPENDED = 1 << 1, 222 POOL_CHECK_READONLY = 1 << 2, 223} zfs_ioc_poolcheck_t; 224 225typedef struct zfs_ioc_vec { 226 zfs_ioc_legacy_func_t *zvec_legacy_func; 227 zfs_ioc_func_t *zvec_func; 228 zfs_secpolicy_func_t *zvec_secpolicy; 229 zfs_ioc_namecheck_t zvec_namecheck; 230 boolean_t zvec_allow_log; 231 zfs_ioc_poolcheck_t zvec_pool_check; 232 boolean_t zvec_smush_outnvlist; 233 const char *zvec_name; 234} zfs_ioc_vec_t; 235 236/* This array is indexed by zfs_userquota_prop_t */ 237static const char *userquota_perms[] = { 238 ZFS_DELEG_PERM_USERUSED, 239 ZFS_DELEG_PERM_USERQUOTA, 240 ZFS_DELEG_PERM_GROUPUSED, 241 ZFS_DELEG_PERM_GROUPQUOTA, 242}; 243 244static int zfs_ioc_userspace_upgrade(zfs_cmd_t *zc); 245static int zfs_check_settable(const char *name, nvpair_t *property, 246 cred_t *cr); 247static int zfs_check_clearable(char *dataset, nvlist_t *props, 248 nvlist_t **errors); 249static int zfs_fill_zplprops_root(uint64_t, nvlist_t *, nvlist_t *, 250 boolean_t *); 251int zfs_set_prop_nvlist(const char *, zprop_source_t, nvlist_t *, nvlist_t *); 252static int get_nvlist(uint64_t nvl, uint64_t size, int iflag, nvlist_t **nvp); 253 254static void zfsdev_close(void *data); 255 256static int zfs_prop_activate_feature(spa_t *spa, spa_feature_t feature); 257 258/* _NOTE(PRINTFLIKE(4)) - this is printf-like, but lint is too whiney */ 259void 260__dprintf(const char *file, const char *func, int line, const char *fmt, ...) 261{ 262 const char *newfile; 263 char buf[512]; 264 va_list adx; 265 266 /* 267 * Get rid of annoying "../common/" prefix to filename. 268 */ 269 newfile = strrchr(file, '/'); 270 if (newfile != NULL) { 271 newfile = newfile + 1; /* Get rid of leading / */ 272 } else { 273 newfile = file; 274 } 275 276 va_start(adx, fmt); 277 (void) vsnprintf(buf, sizeof (buf), fmt, adx); 278 va_end(adx); 279 280 /* 281 * To get this data, use the zfs-dprintf probe as so: 282 * dtrace -q -n 'zfs-dprintf \ 283 * /stringof(arg0) == "dbuf.c"/ \ 284 * {printf("%s: %s", stringof(arg1), stringof(arg3))}' 285 * arg0 = file name 286 * arg1 = function name 287 * arg2 = line number 288 * arg3 = message 289 */ 290 DTRACE_PROBE4(zfs__dprintf, 291 char *, newfile, char *, func, int, line, char *, buf); 292} 293 294static void 295history_str_free(char *buf) 296{ 297 kmem_free(buf, HIS_MAX_RECORD_LEN); 298} 299 300static char * 301history_str_get(zfs_cmd_t *zc) 302{ 303 char *buf; 304 305 if (zc->zc_history == 0) 306 return (NULL); 307 308 buf = kmem_alloc(HIS_MAX_RECORD_LEN, KM_SLEEP); 309 if (copyinstr((void *)(uintptr_t)zc->zc_history, 310 buf, HIS_MAX_RECORD_LEN, NULL) != 0) { 311 history_str_free(buf); 312 return (NULL); 313 } 314 315 buf[HIS_MAX_RECORD_LEN -1] = '\0'; 316 317 return (buf); 318} 319 320/* 321 * Check to see if the named dataset is currently defined as bootable 322 */ 323static boolean_t 324zfs_is_bootfs(const char *name) 325{ 326 objset_t *os; 327 328 if (dmu_objset_hold(name, FTAG, &os) == 0) { 329 boolean_t ret; 330 ret = (dmu_objset_id(os) == spa_bootfs(dmu_objset_spa(os))); 331 dmu_objset_rele(os, FTAG); 332 return (ret); 333 } 334 return (B_FALSE); 335} 336 337/* 338 * Return non-zero if the spa version is less than requested version. 339 */ 340static int 341zfs_earlier_version(const char *name, int version) 342{ 343 spa_t *spa; 344 345 if (spa_open(name, &spa, FTAG) == 0) { 346 if (spa_version(spa) < version) { 347 spa_close(spa, FTAG); 348 return (1); 349 } 350 spa_close(spa, FTAG); 351 } 352 return (0); 353} 354 355/* 356 * Return TRUE if the ZPL version is less than requested version. 357 */ 358static boolean_t 359zpl_earlier_version(const char *name, int version) 360{ 361 objset_t *os; 362 boolean_t rc = B_TRUE; 363 364 if (dmu_objset_hold(name, FTAG, &os) == 0) { 365 uint64_t zplversion; 366 367 if (dmu_objset_type(os) != DMU_OST_ZFS) { 368 dmu_objset_rele(os, FTAG); 369 return (B_TRUE); 370 } 371 /* XXX reading from non-owned objset */ 372 if (zfs_get_zplprop(os, ZFS_PROP_VERSION, &zplversion) == 0) 373 rc = zplversion < version; 374 dmu_objset_rele(os, FTAG); 375 } 376 return (rc); 377} 378 379static void 380zfs_log_history(zfs_cmd_t *zc) 381{ 382 spa_t *spa; 383 char *buf; 384 385 if ((buf = history_str_get(zc)) == NULL) 386 return; 387 388 if (spa_open(zc->zc_name, &spa, FTAG) == 0) { 389 if (spa_version(spa) >= SPA_VERSION_ZPOOL_HISTORY) 390 (void) spa_history_log(spa, buf); 391 spa_close(spa, FTAG); 392 } 393 history_str_free(buf); 394} 395 396/* 397 * Policy for top-level read operations (list pools). Requires no privileges, 398 * and can be used in the local zone, as there is no associated dataset. 399 */ 400/* ARGSUSED */ 401static int 402zfs_secpolicy_none(zfs_cmd_t *zc, nvlist_t *innvl, cred_t *cr) 403{ 404 return (0); 405} 406 407/* 408 * Policy for dataset read operations (list children, get statistics). Requires 409 * no privileges, but must be visible in the local zone. 410 */ 411/* ARGSUSED */ 412static int 413zfs_secpolicy_read(zfs_cmd_t *zc, nvlist_t *innvl, cred_t *cr) 414{ 415 if (INGLOBALZONE(curthread) || 416 zone_dataset_visible(zc->zc_name, NULL)) 417 return (0); 418 419 return (SET_ERROR(ENOENT)); 420} 421 422static int 423zfs_dozonecheck_impl(const char *dataset, uint64_t zoned, cred_t *cr) 424{ 425 int writable = 1; 426 427 /* 428 * The dataset must be visible by this zone -- check this first 429 * so they don't see EPERM on something they shouldn't know about. 430 */ 431 if (!INGLOBALZONE(curthread) && 432 !zone_dataset_visible(dataset, &writable)) 433 return (SET_ERROR(ENOENT)); 434 435 if (INGLOBALZONE(curthread)) { 436 /* 437 * If the fs is zoned, only root can access it from the 438 * global zone. 439 */ 440 if (secpolicy_zfs(cr) && zoned) 441 return (SET_ERROR(EPERM)); 442 } else { 443 /* 444 * If we are in a local zone, the 'zoned' property must be set. 445 */ 446 if (!zoned) 447 return (SET_ERROR(EPERM)); 448 449 /* must be writable by this zone */ 450 if (!writable) 451 return (SET_ERROR(EPERM)); 452 } 453 return (0); 454} 455 456static int 457zfs_dozonecheck(const char *dataset, cred_t *cr) 458{ 459 uint64_t zoned; 460 461 if (dsl_prop_get_integer(dataset, "jailed", &zoned, NULL)) 462 return (SET_ERROR(ENOENT)); 463 464 return (zfs_dozonecheck_impl(dataset, zoned, cr)); 465} 466 467static int 468zfs_dozonecheck_ds(const char *dataset, dsl_dataset_t *ds, cred_t *cr) 469{ 470 uint64_t zoned; 471 472 if (dsl_prop_get_int_ds(ds, "jailed", &zoned)) 473 return (SET_ERROR(ENOENT)); 474 475 return (zfs_dozonecheck_impl(dataset, zoned, cr)); 476} 477 478static int 479zfs_secpolicy_write_perms_ds(const char *name, dsl_dataset_t *ds, 480 const char *perm, cred_t *cr) 481{ 482 int error; 483 484 error = zfs_dozonecheck_ds(name, ds, cr); 485 if (error == 0) { 486 error = secpolicy_zfs(cr); 487 if (error != 0) 488 error = dsl_deleg_access_impl(ds, perm, cr); 489 } 490 return (error); 491} 492 493static int 494zfs_secpolicy_write_perms(const char *name, const char *perm, cred_t *cr) 495{ 496 int error; 497 dsl_dataset_t *ds; 498 dsl_pool_t *dp; 499 500 error = dsl_pool_hold(name, FTAG, &dp); 501 if (error != 0) 502 return (error); 503 504 error = dsl_dataset_hold(dp, name, FTAG, &ds); 505 if (error != 0) { 506 dsl_pool_rele(dp, FTAG); 507 return (error); 508 } 509 510 error = zfs_secpolicy_write_perms_ds(name, ds, perm, cr); 511 512 dsl_dataset_rele(ds, FTAG); 513 dsl_pool_rele(dp, FTAG); 514 return (error); 515} 516 517#ifdef SECLABEL 518/* 519 * Policy for setting the security label property. 520 * 521 * Returns 0 for success, non-zero for access and other errors. 522 */ 523static int 524zfs_set_slabel_policy(const char *name, char *strval, cred_t *cr) 525{ 526 char ds_hexsl[MAXNAMELEN]; 527 bslabel_t ds_sl, new_sl; 528 boolean_t new_default = FALSE; 529 uint64_t zoned; 530 int needed_priv = -1; 531 int error; 532 533 /* First get the existing dataset label. */ 534 error = dsl_prop_get(name, zfs_prop_to_name(ZFS_PROP_MLSLABEL), 535 1, sizeof (ds_hexsl), &ds_hexsl, NULL); 536 if (error != 0) 537 return (SET_ERROR(EPERM)); 538 539 if (strcasecmp(strval, ZFS_MLSLABEL_DEFAULT) == 0) 540 new_default = TRUE; 541 542 /* The label must be translatable */ 543 if (!new_default && (hexstr_to_label(strval, &new_sl) != 0)) 544 return (SET_ERROR(EINVAL)); 545 546 /* 547 * In a non-global zone, disallow attempts to set a label that 548 * doesn't match that of the zone; otherwise no other checks 549 * are needed. 550 */ 551 if (!INGLOBALZONE(curproc)) { 552 if (new_default || !blequal(&new_sl, CR_SL(CRED()))) 553 return (SET_ERROR(EPERM)); 554 return (0); 555 } 556 557 /* 558 * For global-zone datasets (i.e., those whose zoned property is 559 * "off", verify that the specified new label is valid for the 560 * global zone. 561 */ 562 if (dsl_prop_get_integer(name, 563 zfs_prop_to_name(ZFS_PROP_ZONED), &zoned, NULL)) 564 return (SET_ERROR(EPERM)); 565 if (!zoned) { 566 if (zfs_check_global_label(name, strval) != 0) 567 return (SET_ERROR(EPERM)); 568 } 569 570 /* 571 * If the existing dataset label is nondefault, check if the 572 * dataset is mounted (label cannot be changed while mounted). 573 * Get the zfsvfs; if there isn't one, then the dataset isn't 574 * mounted (or isn't a dataset, doesn't exist, ...). 575 */ 576 if (strcasecmp(ds_hexsl, ZFS_MLSLABEL_DEFAULT) != 0) { 577 objset_t *os; 578 static char *setsl_tag = "setsl_tag"; 579 580 /* 581 * Try to own the dataset; abort if there is any error, 582 * (e.g., already mounted, in use, or other error). 583 */ 584 error = dmu_objset_own(name, DMU_OST_ZFS, B_TRUE, 585 setsl_tag, &os); 586 if (error != 0) 587 return (SET_ERROR(EPERM)); 588 589 dmu_objset_disown(os, setsl_tag); 590 591 if (new_default) { 592 needed_priv = PRIV_FILE_DOWNGRADE_SL; 593 goto out_check; 594 } 595 596 if (hexstr_to_label(strval, &new_sl) != 0) 597 return (SET_ERROR(EPERM)); 598 599 if (blstrictdom(&ds_sl, &new_sl)) 600 needed_priv = PRIV_FILE_DOWNGRADE_SL; 601 else if (blstrictdom(&new_sl, &ds_sl)) 602 needed_priv = PRIV_FILE_UPGRADE_SL; 603 } else { 604 /* dataset currently has a default label */ 605 if (!new_default) 606 needed_priv = PRIV_FILE_UPGRADE_SL; 607 } 608 609out_check: 610 if (needed_priv != -1) 611 return (PRIV_POLICY(cr, needed_priv, B_FALSE, EPERM, NULL)); 612 return (0); 613} 614#endif /* SECLABEL */ 615 616static int 617zfs_secpolicy_setprop(const char *dsname, zfs_prop_t prop, nvpair_t *propval, 618 cred_t *cr) 619{ 620 char *strval; 621 622 /* 623 * Check permissions for special properties. 624 */ 625 switch (prop) { 626 case ZFS_PROP_ZONED: 627 /* 628 * Disallow setting of 'zoned' from within a local zone. 629 */ 630 if (!INGLOBALZONE(curthread)) 631 return (SET_ERROR(EPERM)); 632 break; 633 634 case ZFS_PROP_QUOTA: 635 case ZFS_PROP_FILESYSTEM_LIMIT: 636 case ZFS_PROP_SNAPSHOT_LIMIT: 637 if (!INGLOBALZONE(curthread)) { 638 uint64_t zoned; 639 char setpoint[MAXNAMELEN]; 640 /* 641 * Unprivileged users are allowed to modify the 642 * limit on things *under* (ie. contained by) 643 * the thing they own. 644 */ 645 if (dsl_prop_get_integer(dsname, "jailed", &zoned, 646 setpoint)) 647 return (SET_ERROR(EPERM)); 648 if (!zoned || strlen(dsname) <= strlen(setpoint)) 649 return (SET_ERROR(EPERM)); 650 } 651 break; 652 653 case ZFS_PROP_MLSLABEL: 654#ifdef SECLABEL 655 if (!is_system_labeled()) 656 return (SET_ERROR(EPERM)); 657 658 if (nvpair_value_string(propval, &strval) == 0) { 659 int err; 660 661 err = zfs_set_slabel_policy(dsname, strval, CRED()); 662 if (err != 0) 663 return (err); 664 } 665#else 666 return (EOPNOTSUPP); 667#endif 668 break; 669 } 670 671 return (zfs_secpolicy_write_perms(dsname, zfs_prop_to_name(prop), cr)); 672} 673 674/* ARGSUSED */ 675static int 676zfs_secpolicy_set_fsacl(zfs_cmd_t *zc, nvlist_t *innvl, cred_t *cr) 677{ 678 int error; 679 680 error = zfs_dozonecheck(zc->zc_name, cr); 681 if (error != 0) 682 return (error); 683 684 /* 685 * permission to set permissions will be evaluated later in 686 * dsl_deleg_can_allow() 687 */ 688 return (0); 689} 690 691/* ARGSUSED */ 692static int 693zfs_secpolicy_rollback(zfs_cmd_t *zc, nvlist_t *innvl, cred_t *cr) 694{ 695 return (zfs_secpolicy_write_perms(zc->zc_name, 696 ZFS_DELEG_PERM_ROLLBACK, cr)); 697} 698 699/* ARGSUSED */ 700static int 701zfs_secpolicy_send(zfs_cmd_t *zc, nvlist_t *innvl, cred_t *cr) 702{ 703 dsl_pool_t *dp; 704 dsl_dataset_t *ds; 705 char *cp; 706 int error; 707 708 /* 709 * Generate the current snapshot name from the given objsetid, then 710 * use that name for the secpolicy/zone checks. 711 */ 712 cp = strchr(zc->zc_name, '@'); 713 if (cp == NULL) 714 return (SET_ERROR(EINVAL)); 715 error = dsl_pool_hold(zc->zc_name, FTAG, &dp); 716 if (error != 0) 717 return (error); 718 719 error = dsl_dataset_hold_obj(dp, zc->zc_sendobj, FTAG, &ds); 720 if (error != 0) { 721 dsl_pool_rele(dp, FTAG); 722 return (error); 723 } 724 725 dsl_dataset_name(ds, zc->zc_name); 726 727 error = zfs_secpolicy_write_perms_ds(zc->zc_name, ds, 728 ZFS_DELEG_PERM_SEND, cr); 729 dsl_dataset_rele(ds, FTAG); 730 dsl_pool_rele(dp, FTAG); 731 732 return (error); 733} 734 735/* ARGSUSED */ 736static int 737zfs_secpolicy_send_new(zfs_cmd_t *zc, nvlist_t *innvl, cred_t *cr) 738{ 739 return (zfs_secpolicy_write_perms(zc->zc_name, 740 ZFS_DELEG_PERM_SEND, cr)); 741} 742 743/* ARGSUSED */ 744static int 745zfs_secpolicy_deleg_share(zfs_cmd_t *zc, nvlist_t *innvl, cred_t *cr) 746{ 747 vnode_t *vp; 748 int error; 749 750 if ((error = lookupname(zc->zc_value, UIO_SYSSPACE, 751 NO_FOLLOW, NULL, &vp)) != 0) 752 return (error); 753 754 /* Now make sure mntpnt and dataset are ZFS */ 755 756 if (strcmp(vp->v_vfsp->mnt_stat.f_fstypename, "zfs") != 0 || 757 (strcmp((char *)refstr_value(vp->v_vfsp->vfs_resource), 758 zc->zc_name) != 0)) { 759 VN_RELE(vp); 760 return (SET_ERROR(EPERM)); 761 } 762 763 VN_RELE(vp); 764 return (dsl_deleg_access(zc->zc_name, 765 ZFS_DELEG_PERM_SHARE, cr)); 766} 767 768int 769zfs_secpolicy_share(zfs_cmd_t *zc, nvlist_t *innvl, cred_t *cr) 770{ 771 if (!INGLOBALZONE(curthread)) 772 return (SET_ERROR(EPERM)); 773 774 if (secpolicy_nfs(cr) == 0) { 775 return (0); 776 } else { 777 return (zfs_secpolicy_deleg_share(zc, innvl, cr)); 778 } 779} 780 781int 782zfs_secpolicy_smb_acl(zfs_cmd_t *zc, nvlist_t *innvl, cred_t *cr) 783{ 784 if (!INGLOBALZONE(curthread)) 785 return (SET_ERROR(EPERM)); 786 787 if (secpolicy_smb(cr) == 0) { 788 return (0); 789 } else { 790 return (zfs_secpolicy_deleg_share(zc, innvl, cr)); 791 } 792} 793 794static int 795zfs_get_parent(const char *datasetname, char *parent, int parentsize) 796{ 797 char *cp; 798 799 /* 800 * Remove the @bla or /bla from the end of the name to get the parent. 801 */ 802 (void) strncpy(parent, datasetname, parentsize); 803 cp = strrchr(parent, '@'); 804 if (cp != NULL) { 805 cp[0] = '\0'; 806 } else { 807 cp = strrchr(parent, '/'); 808 if (cp == NULL) 809 return (SET_ERROR(ENOENT)); 810 cp[0] = '\0'; 811 } 812 813 return (0); 814} 815 816int 817zfs_secpolicy_destroy_perms(const char *name, cred_t *cr) 818{ 819 int error; 820 821 if ((error = zfs_secpolicy_write_perms(name, 822 ZFS_DELEG_PERM_MOUNT, cr)) != 0) 823 return (error); 824 825 return (zfs_secpolicy_write_perms(name, ZFS_DELEG_PERM_DESTROY, cr)); 826} 827 828/* ARGSUSED */ 829static int 830zfs_secpolicy_destroy(zfs_cmd_t *zc, nvlist_t *innvl, cred_t *cr) 831{ 832 return (zfs_secpolicy_destroy_perms(zc->zc_name, cr)); 833} 834 835/* 836 * Destroying snapshots with delegated permissions requires 837 * descendant mount and destroy permissions. 838 */ 839/* ARGSUSED */ 840static int 841zfs_secpolicy_destroy_snaps(zfs_cmd_t *zc, nvlist_t *innvl, cred_t *cr) 842{ 843 nvlist_t *snaps; 844 nvpair_t *pair, *nextpair; 845 int error = 0; 846 847 if (nvlist_lookup_nvlist(innvl, "snaps", &snaps) != 0) 848 return (SET_ERROR(EINVAL)); 849 for (pair = nvlist_next_nvpair(snaps, NULL); pair != NULL; 850 pair = nextpair) { 851 nextpair = nvlist_next_nvpair(snaps, pair); 852 error = zfs_secpolicy_destroy_perms(nvpair_name(pair), cr); 853 if (error == ENOENT) { 854 /* 855 * Ignore any snapshots that don't exist (we consider 856 * them "already destroyed"). Remove the name from the 857 * nvl here in case the snapshot is created between 858 * now and when we try to destroy it (in which case 859 * we don't want to destroy it since we haven't 860 * checked for permission). 861 */ 862 fnvlist_remove_nvpair(snaps, pair); 863 error = 0; 864 } 865 if (error != 0) 866 break; 867 } 868 869 return (error); 870} 871 872int 873zfs_secpolicy_rename_perms(const char *from, const char *to, cred_t *cr) 874{ 875 char parentname[MAXNAMELEN]; 876 int error; 877 878 if ((error = zfs_secpolicy_write_perms(from, 879 ZFS_DELEG_PERM_RENAME, cr)) != 0) 880 return (error); 881 882 if ((error = zfs_secpolicy_write_perms(from, 883 ZFS_DELEG_PERM_MOUNT, cr)) != 0) 884 return (error); 885 886 if ((error = zfs_get_parent(to, parentname, 887 sizeof (parentname))) != 0) 888 return (error); 889 890 if ((error = zfs_secpolicy_write_perms(parentname, 891 ZFS_DELEG_PERM_CREATE, cr)) != 0) 892 return (error); 893 894 if ((error = zfs_secpolicy_write_perms(parentname, 895 ZFS_DELEG_PERM_MOUNT, cr)) != 0) 896 return (error); 897 898 return (error); 899} 900 901/* ARGSUSED */ 902static int 903zfs_secpolicy_rename(zfs_cmd_t *zc, nvlist_t *innvl, cred_t *cr) 904{ 905 char *at = NULL; 906 int error; 907 908 if ((zc->zc_cookie & 1) != 0) { 909 /* 910 * This is recursive rename, so the starting snapshot might 911 * not exist. Check file system or volume permission instead. 912 */ 913 at = strchr(zc->zc_name, '@'); 914 if (at == NULL) 915 return (EINVAL); 916 *at = '\0'; 917 } 918 919 error = zfs_secpolicy_rename_perms(zc->zc_name, zc->zc_value, cr); 920 921 if (at != NULL) 922 *at = '@'; 923 924 return (error); 925} 926 927/* ARGSUSED */ 928static int 929zfs_secpolicy_promote(zfs_cmd_t *zc, nvlist_t *innvl, cred_t *cr) 930{ 931 dsl_pool_t *dp; 932 dsl_dataset_t *clone; 933 int error; 934 935 error = zfs_secpolicy_write_perms(zc->zc_name, 936 ZFS_DELEG_PERM_PROMOTE, cr); 937 if (error != 0) 938 return (error); 939 940 error = dsl_pool_hold(zc->zc_name, FTAG, &dp); 941 if (error != 0) 942 return (error); 943 944 error = dsl_dataset_hold(dp, zc->zc_name, FTAG, &clone); 945 946 if (error == 0) { 947 char parentname[MAXNAMELEN]; 948 dsl_dataset_t *origin = NULL; 949 dsl_dir_t *dd; 950 dd = clone->ds_dir; 951 952 error = dsl_dataset_hold_obj(dd->dd_pool, 953 dsl_dir_phys(dd)->dd_origin_obj, FTAG, &origin); 954 if (error != 0) { 955 dsl_dataset_rele(clone, FTAG); 956 dsl_pool_rele(dp, FTAG); 957 return (error); 958 } 959 960 error = zfs_secpolicy_write_perms_ds(zc->zc_name, clone, 961 ZFS_DELEG_PERM_MOUNT, cr); 962 963 dsl_dataset_name(origin, parentname); 964 if (error == 0) { 965 error = zfs_secpolicy_write_perms_ds(parentname, origin, 966 ZFS_DELEG_PERM_PROMOTE, cr); 967 } 968 dsl_dataset_rele(clone, FTAG); 969 dsl_dataset_rele(origin, FTAG); 970 } 971 dsl_pool_rele(dp, FTAG); 972 return (error); 973} 974 975/* ARGSUSED */ 976static int 977zfs_secpolicy_recv(zfs_cmd_t *zc, nvlist_t *innvl, cred_t *cr) 978{ 979 int error; 980 981 if ((error = zfs_secpolicy_write_perms(zc->zc_name, 982 ZFS_DELEG_PERM_RECEIVE, cr)) != 0) 983 return (error); 984 985 if ((error = zfs_secpolicy_write_perms(zc->zc_name, 986 ZFS_DELEG_PERM_MOUNT, cr)) != 0) 987 return (error); 988 989 return (zfs_secpolicy_write_perms(zc->zc_name, 990 ZFS_DELEG_PERM_CREATE, cr)); 991} 992 993int 994zfs_secpolicy_snapshot_perms(const char *name, cred_t *cr) 995{ 996 return (zfs_secpolicy_write_perms(name, 997 ZFS_DELEG_PERM_SNAPSHOT, cr)); 998} 999 1000/* 1001 * Check for permission to create each snapshot in the nvlist. 1002 */ 1003/* ARGSUSED */ 1004static int 1005zfs_secpolicy_snapshot(zfs_cmd_t *zc, nvlist_t *innvl, cred_t *cr) 1006{ 1007 nvlist_t *snaps; 1008 int error; 1009 nvpair_t *pair; 1010 1011 if (nvlist_lookup_nvlist(innvl, "snaps", &snaps) != 0) 1012 return (SET_ERROR(EINVAL)); 1013 for (pair = nvlist_next_nvpair(snaps, NULL); pair != NULL; 1014 pair = nvlist_next_nvpair(snaps, pair)) { 1015 char *name = nvpair_name(pair); 1016 char *atp = strchr(name, '@'); 1017 1018 if (atp == NULL) { 1019 error = SET_ERROR(EINVAL); 1020 break; 1021 } 1022 *atp = '\0'; 1023 error = zfs_secpolicy_snapshot_perms(name, cr); 1024 *atp = '@'; 1025 if (error != 0) 1026 break; 1027 } 1028 return (error); 1029} 1030 1031/* 1032 * Check for permission to create each snapshot in the nvlist. 1033 */ 1034/* ARGSUSED */ 1035static int 1036zfs_secpolicy_bookmark(zfs_cmd_t *zc, nvlist_t *innvl, cred_t *cr) 1037{ 1038 int error = 0; 1039 1040 for (nvpair_t *pair = nvlist_next_nvpair(innvl, NULL); 1041 pair != NULL; pair = nvlist_next_nvpair(innvl, pair)) { 1042 char *name = nvpair_name(pair); 1043 char *hashp = strchr(name, '#'); 1044 1045 if (hashp == NULL) { 1046 error = SET_ERROR(EINVAL); 1047 break; 1048 } 1049 *hashp = '\0'; 1050 error = zfs_secpolicy_write_perms(name, 1051 ZFS_DELEG_PERM_BOOKMARK, cr); 1052 *hashp = '#'; 1053 if (error != 0) 1054 break; 1055 } 1056 return (error); 1057} 1058 1059/* ARGSUSED */ 1060static int 1061zfs_secpolicy_destroy_bookmarks(zfs_cmd_t *zc, nvlist_t *innvl, cred_t *cr) 1062{ 1063 nvpair_t *pair, *nextpair; 1064 int error = 0; 1065 1066 for (pair = nvlist_next_nvpair(innvl, NULL); pair != NULL; 1067 pair = nextpair) { 1068 char *name = nvpair_name(pair); 1069 char *hashp = strchr(name, '#'); 1070 nextpair = nvlist_next_nvpair(innvl, pair); 1071 1072 if (hashp == NULL) { 1073 error = SET_ERROR(EINVAL); 1074 break; 1075 } 1076 1077 *hashp = '\0'; 1078 error = zfs_secpolicy_write_perms(name, 1079 ZFS_DELEG_PERM_DESTROY, cr); 1080 *hashp = '#'; 1081 if (error == ENOENT) { 1082 /* 1083 * Ignore any filesystems that don't exist (we consider 1084 * their bookmarks "already destroyed"). Remove 1085 * the name from the nvl here in case the filesystem 1086 * is created between now and when we try to destroy 1087 * the bookmark (in which case we don't want to 1088 * destroy it since we haven't checked for permission). 1089 */ 1090 fnvlist_remove_nvpair(innvl, pair); 1091 error = 0; 1092 } 1093 if (error != 0) 1094 break; 1095 } 1096 1097 return (error); 1098} 1099 1100/* ARGSUSED */ 1101static int 1102zfs_secpolicy_log_history(zfs_cmd_t *zc, nvlist_t *innvl, cred_t *cr) 1103{ 1104 /* 1105 * Even root must have a proper TSD so that we know what pool 1106 * to log to. 1107 */ 1108 if (tsd_get(zfs_allow_log_key) == NULL) 1109 return (SET_ERROR(EPERM)); 1110 return (0); 1111} 1112 1113static int 1114zfs_secpolicy_create_clone(zfs_cmd_t *zc, nvlist_t *innvl, cred_t *cr) 1115{ 1116 char parentname[MAXNAMELEN]; 1117 int error; 1118 char *origin; 1119 1120 if ((error = zfs_get_parent(zc->zc_name, parentname, 1121 sizeof (parentname))) != 0) 1122 return (error); 1123 1124 if (nvlist_lookup_string(innvl, "origin", &origin) == 0 && 1125 (error = zfs_secpolicy_write_perms(origin, 1126 ZFS_DELEG_PERM_CLONE, cr)) != 0) 1127 return (error); 1128 1129 if ((error = zfs_secpolicy_write_perms(parentname, 1130 ZFS_DELEG_PERM_CREATE, cr)) != 0) 1131 return (error); 1132 1133 return (zfs_secpolicy_write_perms(parentname, 1134 ZFS_DELEG_PERM_MOUNT, cr)); 1135} 1136 1137/* 1138 * Policy for pool operations - create/destroy pools, add vdevs, etc. Requires 1139 * SYS_CONFIG privilege, which is not available in a local zone. 1140 */ 1141/* ARGSUSED */ 1142static int 1143zfs_secpolicy_config(zfs_cmd_t *zc, nvlist_t *innvl, cred_t *cr) 1144{ 1145 if (secpolicy_sys_config(cr, B_FALSE) != 0) 1146 return (SET_ERROR(EPERM)); 1147 1148 return (0); 1149} 1150 1151/* 1152 * Policy for object to name lookups. 1153 */ 1154/* ARGSUSED */ 1155static int 1156zfs_secpolicy_diff(zfs_cmd_t *zc, nvlist_t *innvl, cred_t *cr) 1157{ 1158 int error; 1159 1160 if ((error = secpolicy_sys_config(cr, B_FALSE)) == 0) 1161 return (0); 1162 1163 error = zfs_secpolicy_write_perms(zc->zc_name, ZFS_DELEG_PERM_DIFF, cr); 1164 return (error); 1165} 1166 1167/* 1168 * Policy for fault injection. Requires all privileges. 1169 */ 1170/* ARGSUSED */ 1171static int 1172zfs_secpolicy_inject(zfs_cmd_t *zc, nvlist_t *innvl, cred_t *cr) 1173{ 1174 return (secpolicy_zinject(cr)); 1175} 1176 1177/* ARGSUSED */ 1178static int 1179zfs_secpolicy_inherit_prop(zfs_cmd_t *zc, nvlist_t *innvl, cred_t *cr) 1180{ 1181 zfs_prop_t prop = zfs_name_to_prop(zc->zc_value); 1182 1183 if (prop == ZPROP_INVAL) { 1184 if (!zfs_prop_user(zc->zc_value)) 1185 return (SET_ERROR(EINVAL)); 1186 return (zfs_secpolicy_write_perms(zc->zc_name, 1187 ZFS_DELEG_PERM_USERPROP, cr)); 1188 } else { 1189 return (zfs_secpolicy_setprop(zc->zc_name, prop, 1190 NULL, cr)); 1191 } 1192} 1193 1194static int 1195zfs_secpolicy_userspace_one(zfs_cmd_t *zc, nvlist_t *innvl, cred_t *cr) 1196{ 1197 int err = zfs_secpolicy_read(zc, innvl, cr); 1198 if (err) 1199 return (err); 1200 1201 if (zc->zc_objset_type >= ZFS_NUM_USERQUOTA_PROPS) 1202 return (SET_ERROR(EINVAL)); 1203 1204 if (zc->zc_value[0] == 0) { 1205 /* 1206 * They are asking about a posix uid/gid. If it's 1207 * themself, allow it. 1208 */ 1209 if (zc->zc_objset_type == ZFS_PROP_USERUSED || 1210 zc->zc_objset_type == ZFS_PROP_USERQUOTA) { 1211 if (zc->zc_guid == crgetuid(cr)) 1212 return (0); 1213 } else { 1214 if (groupmember(zc->zc_guid, cr)) 1215 return (0); 1216 } 1217 } 1218 1219 return (zfs_secpolicy_write_perms(zc->zc_name, 1220 userquota_perms[zc->zc_objset_type], cr)); 1221} 1222 1223static int 1224zfs_secpolicy_userspace_many(zfs_cmd_t *zc, nvlist_t *innvl, cred_t *cr) 1225{ 1226 int err = zfs_secpolicy_read(zc, innvl, cr); 1227 if (err) 1228 return (err); 1229 1230 if (zc->zc_objset_type >= ZFS_NUM_USERQUOTA_PROPS) 1231 return (SET_ERROR(EINVAL)); 1232 1233 return (zfs_secpolicy_write_perms(zc->zc_name, 1234 userquota_perms[zc->zc_objset_type], cr)); 1235} 1236 1237/* ARGSUSED */ 1238static int 1239zfs_secpolicy_userspace_upgrade(zfs_cmd_t *zc, nvlist_t *innvl, cred_t *cr) 1240{ 1241 return (zfs_secpolicy_setprop(zc->zc_name, ZFS_PROP_VERSION, 1242 NULL, cr)); 1243} 1244 1245/* ARGSUSED */ 1246static int 1247zfs_secpolicy_hold(zfs_cmd_t *zc, nvlist_t *innvl, cred_t *cr) 1248{ 1249 nvpair_t *pair; 1250 nvlist_t *holds; 1251 int error; 1252 1253 error = nvlist_lookup_nvlist(innvl, "holds", &holds); 1254 if (error != 0) 1255 return (SET_ERROR(EINVAL)); 1256 1257 for (pair = nvlist_next_nvpair(holds, NULL); pair != NULL; 1258 pair = nvlist_next_nvpair(holds, pair)) { 1259 char fsname[MAXNAMELEN]; 1260 error = dmu_fsname(nvpair_name(pair), fsname); 1261 if (error != 0) 1262 return (error); 1263 error = zfs_secpolicy_write_perms(fsname, 1264 ZFS_DELEG_PERM_HOLD, cr); 1265 if (error != 0) 1266 return (error); 1267 } 1268 return (0); 1269} 1270 1271/* ARGSUSED */ 1272static int 1273zfs_secpolicy_release(zfs_cmd_t *zc, nvlist_t *innvl, cred_t *cr) 1274{ 1275 nvpair_t *pair; 1276 int error; 1277 1278 for (pair = nvlist_next_nvpair(innvl, NULL); pair != NULL; 1279 pair = nvlist_next_nvpair(innvl, pair)) { 1280 char fsname[MAXNAMELEN]; 1281 error = dmu_fsname(nvpair_name(pair), fsname); 1282 if (error != 0) 1283 return (error); 1284 error = zfs_secpolicy_write_perms(fsname, 1285 ZFS_DELEG_PERM_RELEASE, cr); 1286 if (error != 0) 1287 return (error); 1288 } 1289 return (0); 1290} 1291 1292/* 1293 * Policy for allowing temporary snapshots to be taken or released 1294 */ 1295static int 1296zfs_secpolicy_tmp_snapshot(zfs_cmd_t *zc, nvlist_t *innvl, cred_t *cr) 1297{ 1298 /* 1299 * A temporary snapshot is the same as a snapshot, 1300 * hold, destroy and release all rolled into one. 1301 * Delegated diff alone is sufficient that we allow this. 1302 */ 1303 int error; 1304 1305 if ((error = zfs_secpolicy_write_perms(zc->zc_name, 1306 ZFS_DELEG_PERM_DIFF, cr)) == 0) 1307 return (0); 1308 1309 error = zfs_secpolicy_snapshot_perms(zc->zc_name, cr); 1310 if (error == 0) 1311 error = zfs_secpolicy_hold(zc, innvl, cr); 1312 if (error == 0) 1313 error = zfs_secpolicy_release(zc, innvl, cr); 1314 if (error == 0) 1315 error = zfs_secpolicy_destroy(zc, innvl, cr); 1316 return (error); 1317} 1318 1319/* 1320 * Returns the nvlist as specified by the user in the zfs_cmd_t. 1321 */ 1322static int 1323get_nvlist(uint64_t nvl, uint64_t size, int iflag, nvlist_t **nvp) 1324{ 1325 char *packed; 1326 int error; 1327 nvlist_t *list = NULL; 1328 1329 /* 1330 * Read in and unpack the user-supplied nvlist. 1331 */ 1332 if (size == 0) 1333 return (SET_ERROR(EINVAL)); 1334 1335 packed = kmem_alloc(size, KM_SLEEP); 1336 1337 if ((error = ddi_copyin((void *)(uintptr_t)nvl, packed, size, 1338 iflag)) != 0) { 1339 kmem_free(packed, size); 1340 return (error); 1341 } 1342 1343 if ((error = nvlist_unpack(packed, size, &list, 0)) != 0) { 1344 kmem_free(packed, size); 1345 return (error); 1346 } 1347 1348 kmem_free(packed, size); 1349 1350 *nvp = list; 1351 return (0); 1352} 1353 1354/* 1355 * Reduce the size of this nvlist until it can be serialized in 'max' bytes. 1356 * Entries will be removed from the end of the nvlist, and one int32 entry 1357 * named "N_MORE_ERRORS" will be added indicating how many entries were 1358 * removed. 1359 */ 1360static int 1361nvlist_smush(nvlist_t *errors, size_t max) 1362{ 1363 size_t size; 1364 1365 size = fnvlist_size(errors); 1366 1367 if (size > max) { 1368 nvpair_t *more_errors; 1369 int n = 0; 1370 1371 if (max < 1024) 1372 return (SET_ERROR(ENOMEM)); 1373 1374 fnvlist_add_int32(errors, ZPROP_N_MORE_ERRORS, 0); 1375 more_errors = nvlist_prev_nvpair(errors, NULL); 1376 1377 do { 1378 nvpair_t *pair = nvlist_prev_nvpair(errors, 1379 more_errors); 1380 fnvlist_remove_nvpair(errors, pair); 1381 n++; 1382 size = fnvlist_size(errors); 1383 } while (size > max); 1384 1385 fnvlist_remove_nvpair(errors, more_errors); 1386 fnvlist_add_int32(errors, ZPROP_N_MORE_ERRORS, n); 1387 ASSERT3U(fnvlist_size(errors), <=, max); 1388 } 1389 1390 return (0); 1391} 1392 1393static int 1394put_nvlist(zfs_cmd_t *zc, nvlist_t *nvl) 1395{ 1396 char *packed = NULL; 1397 int error = 0; 1398 size_t size; 1399 1400 size = fnvlist_size(nvl); 1401 1402 if (size > zc->zc_nvlist_dst_size) { 1403 /* 1404 * Solaris returns ENOMEM here, because even if an error is 1405 * returned from an ioctl(2), new zc_nvlist_dst_size will be 1406 * passed to the userland. This is not the case for FreeBSD. 1407 * We need to return 0, so the kernel will copy the 1408 * zc_nvlist_dst_size back and the userland can discover that a 1409 * bigger buffer is needed. 1410 */ 1411 error = 0; 1412 } else { 1413 packed = fnvlist_pack(nvl, &size); 1414 if (ddi_copyout(packed, (void *)(uintptr_t)zc->zc_nvlist_dst, 1415 size, zc->zc_iflags) != 0) 1416 error = SET_ERROR(EFAULT); 1417 fnvlist_pack_free(packed, size); 1418 } 1419 1420 zc->zc_nvlist_dst_size = size; 1421 zc->zc_nvlist_dst_filled = B_TRUE; 1422 return (error); 1423} 1424 1425static int 1426getzfsvfs(const char *dsname, zfsvfs_t **zfvp) 1427{ 1428 objset_t *os; 1429 int error; 1430 1431 error = dmu_objset_hold(dsname, FTAG, &os); 1432 if (error != 0) 1433 return (error); 1434 if (dmu_objset_type(os) != DMU_OST_ZFS) { 1435 dmu_objset_rele(os, FTAG); 1436 return (SET_ERROR(EINVAL)); 1437 } 1438 1439 mutex_enter(&os->os_user_ptr_lock); 1440 *zfvp = dmu_objset_get_user(os); 1441 if (*zfvp) { 1442 VFS_HOLD((*zfvp)->z_vfs); 1443 } else { 1444 error = SET_ERROR(ESRCH); 1445 } 1446 mutex_exit(&os->os_user_ptr_lock); 1447 dmu_objset_rele(os, FTAG); 1448 return (error); 1449} 1450 1451/* 1452 * Find a zfsvfs_t for a mounted filesystem, or create our own, in which 1453 * case its z_vfs will be NULL, and it will be opened as the owner. 1454 * If 'writer' is set, the z_teardown_lock will be held for RW_WRITER, 1455 * which prevents all vnode ops from running. 1456 */ 1457static int 1458zfsvfs_hold(const char *name, void *tag, zfsvfs_t **zfvp, boolean_t writer) 1459{ 1460 int error = 0; 1461 1462 if (getzfsvfs(name, zfvp) != 0) 1463 error = zfsvfs_create(name, zfvp); 1464 if (error == 0) { 1465 rrm_enter(&(*zfvp)->z_teardown_lock, (writer) ? RW_WRITER : 1466 RW_READER, tag); 1467 if ((*zfvp)->z_unmounted) { 1468 /* 1469 * XXX we could probably try again, since the unmounting 1470 * thread should be just about to disassociate the 1471 * objset from the zfsvfs. 1472 */ 1473 rrm_exit(&(*zfvp)->z_teardown_lock, tag); 1474 return (SET_ERROR(EBUSY)); 1475 } 1476 } 1477 return (error); 1478} 1479 1480static void 1481zfsvfs_rele(zfsvfs_t *zfsvfs, void *tag) 1482{ 1483 rrm_exit(&zfsvfs->z_teardown_lock, tag); 1484 1485 if (zfsvfs->z_vfs) { 1486 VFS_RELE(zfsvfs->z_vfs); 1487 } else { 1488 dmu_objset_disown(zfsvfs->z_os, zfsvfs); 1489 zfsvfs_free(zfsvfs); 1490 } 1491} 1492 1493static int 1494zfs_ioc_pool_create(zfs_cmd_t *zc) 1495{ 1496 int error; 1497 nvlist_t *config, *props = NULL; 1498 nvlist_t *rootprops = NULL; 1499 nvlist_t *zplprops = NULL; 1500 1501 if (error = get_nvlist(zc->zc_nvlist_conf, zc->zc_nvlist_conf_size, 1502 zc->zc_iflags, &config)) 1503 return (error); 1504 1505 if (zc->zc_nvlist_src_size != 0 && (error = 1506 get_nvlist(zc->zc_nvlist_src, zc->zc_nvlist_src_size, 1507 zc->zc_iflags, &props))) { 1508 nvlist_free(config); 1509 return (error); 1510 } 1511 1512 if (props) { 1513 nvlist_t *nvl = NULL; 1514 uint64_t version = SPA_VERSION; 1515 1516 (void) nvlist_lookup_uint64(props, 1517 zpool_prop_to_name(ZPOOL_PROP_VERSION), &version); 1518 if (!SPA_VERSION_IS_SUPPORTED(version)) { 1519 error = SET_ERROR(EINVAL); 1520 goto pool_props_bad; 1521 } 1522 (void) nvlist_lookup_nvlist(props, ZPOOL_ROOTFS_PROPS, &nvl); 1523 if (nvl) { 1524 error = nvlist_dup(nvl, &rootprops, KM_SLEEP); 1525 if (error != 0) { 1526 nvlist_free(config); 1527 nvlist_free(props); 1528 return (error); 1529 } 1530 (void) nvlist_remove_all(props, ZPOOL_ROOTFS_PROPS); 1531 } 1532 VERIFY(nvlist_alloc(&zplprops, NV_UNIQUE_NAME, KM_SLEEP) == 0); 1533 error = zfs_fill_zplprops_root(version, rootprops, 1534 zplprops, NULL); 1535 if (error != 0) 1536 goto pool_props_bad; 1537 } 1538 1539 error = spa_create(zc->zc_name, config, props, zplprops); 1540 1541 /* 1542 * Set the remaining root properties 1543 */ 1544 if (!error && (error = zfs_set_prop_nvlist(zc->zc_name, 1545 ZPROP_SRC_LOCAL, rootprops, NULL)) != 0) 1546 (void) spa_destroy(zc->zc_name); 1547 1548pool_props_bad: 1549 nvlist_free(rootprops); 1550 nvlist_free(zplprops); 1551 nvlist_free(config); 1552 nvlist_free(props); 1553 1554 return (error); 1555} 1556 1557static int 1558zfs_ioc_pool_destroy(zfs_cmd_t *zc) 1559{ 1560 int error; 1561 zfs_log_history(zc); 1562 error = spa_destroy(zc->zc_name); 1563 if (error == 0) 1564 zvol_remove_minors(zc->zc_name); 1565 return (error); 1566} 1567 1568static int 1569zfs_ioc_pool_import(zfs_cmd_t *zc) 1570{ 1571 nvlist_t *config, *props = NULL; 1572 uint64_t guid; 1573 int error; 1574 1575 if ((error = get_nvlist(zc->zc_nvlist_conf, zc->zc_nvlist_conf_size, 1576 zc->zc_iflags, &config)) != 0) 1577 return (error); 1578 1579 if (zc->zc_nvlist_src_size != 0 && (error = 1580 get_nvlist(zc->zc_nvlist_src, zc->zc_nvlist_src_size, 1581 zc->zc_iflags, &props))) { 1582 nvlist_free(config); 1583 return (error); 1584 } 1585 1586 if (nvlist_lookup_uint64(config, ZPOOL_CONFIG_POOL_GUID, &guid) != 0 || 1587 guid != zc->zc_guid) 1588 error = SET_ERROR(EINVAL); 1589 else 1590 error = spa_import(zc->zc_name, config, props, zc->zc_cookie); 1591 1592 if (zc->zc_nvlist_dst != 0) { 1593 int err; 1594 1595 if ((err = put_nvlist(zc, config)) != 0) 1596 error = err; 1597 } 1598 1599 nvlist_free(config); 1600 1601 if (props) 1602 nvlist_free(props); 1603 1604 return (error); 1605} 1606 1607static int 1608zfs_ioc_pool_export(zfs_cmd_t *zc) 1609{ 1610 int error; 1611 boolean_t force = (boolean_t)zc->zc_cookie; 1612 boolean_t hardforce = (boolean_t)zc->zc_guid; 1613 1614 zfs_log_history(zc); 1615 error = spa_export(zc->zc_name, NULL, force, hardforce); 1616 if (error == 0) 1617 zvol_remove_minors(zc->zc_name); 1618 return (error); 1619} 1620 1621static int 1622zfs_ioc_pool_configs(zfs_cmd_t *zc) 1623{ 1624 nvlist_t *configs; 1625 int error; 1626 1627 if ((configs = spa_all_configs(&zc->zc_cookie)) == NULL) 1628 return (SET_ERROR(EEXIST)); 1629 1630 error = put_nvlist(zc, configs); 1631 1632 nvlist_free(configs); 1633 1634 return (error); 1635} 1636 1637/* 1638 * inputs: 1639 * zc_name name of the pool 1640 * 1641 * outputs: 1642 * zc_cookie real errno 1643 * zc_nvlist_dst config nvlist 1644 * zc_nvlist_dst_size size of config nvlist 1645 */ 1646static int 1647zfs_ioc_pool_stats(zfs_cmd_t *zc) 1648{ 1649 nvlist_t *config; 1650 int error; 1651 int ret = 0; 1652 1653 error = spa_get_stats(zc->zc_name, &config, zc->zc_value, 1654 sizeof (zc->zc_value)); 1655 1656 if (config != NULL) { 1657 ret = put_nvlist(zc, config); 1658 nvlist_free(config); 1659 1660 /* 1661 * The config may be present even if 'error' is non-zero. 1662 * In this case we return success, and preserve the real errno 1663 * in 'zc_cookie'. 1664 */ 1665 zc->zc_cookie = error; 1666 } else { 1667 ret = error; 1668 } 1669 1670 return (ret); 1671} 1672 1673/* 1674 * Try to import the given pool, returning pool stats as appropriate so that 1675 * user land knows which devices are available and overall pool health. 1676 */ 1677static int 1678zfs_ioc_pool_tryimport(zfs_cmd_t *zc) 1679{ 1680 nvlist_t *tryconfig, *config; 1681 int error; 1682 1683 if ((error = get_nvlist(zc->zc_nvlist_conf, zc->zc_nvlist_conf_size, 1684 zc->zc_iflags, &tryconfig)) != 0) 1685 return (error); 1686 1687 config = spa_tryimport(tryconfig); 1688 1689 nvlist_free(tryconfig); 1690 1691 if (config == NULL) 1692 return (SET_ERROR(EINVAL)); 1693 1694 error = put_nvlist(zc, config); 1695 nvlist_free(config); 1696 1697 return (error); 1698} 1699 1700/* 1701 * inputs: 1702 * zc_name name of the pool 1703 * zc_cookie scan func (pool_scan_func_t) 1704 */ 1705static int 1706zfs_ioc_pool_scan(zfs_cmd_t *zc) 1707{ 1708 spa_t *spa; 1709 int error; 1710 1711 if ((error = spa_open(zc->zc_name, &spa, FTAG)) != 0) 1712 return (error); 1713 1714 if (zc->zc_cookie == POOL_SCAN_NONE) 1715 error = spa_scan_stop(spa); 1716 else 1717 error = spa_scan(spa, zc->zc_cookie); 1718 1719 spa_close(spa, FTAG); 1720 1721 return (error); 1722} 1723 1724static int 1725zfs_ioc_pool_freeze(zfs_cmd_t *zc) 1726{ 1727 spa_t *spa; 1728 int error; 1729 1730 error = spa_open(zc->zc_name, &spa, FTAG); 1731 if (error == 0) { 1732 spa_freeze(spa); 1733 spa_close(spa, FTAG); 1734 } 1735 return (error); 1736} 1737 1738static int 1739zfs_ioc_pool_upgrade(zfs_cmd_t *zc) 1740{ 1741 spa_t *spa; 1742 int error; 1743 1744 if ((error = spa_open(zc->zc_name, &spa, FTAG)) != 0) 1745 return (error); 1746 1747 if (zc->zc_cookie < spa_version(spa) || 1748 !SPA_VERSION_IS_SUPPORTED(zc->zc_cookie)) { 1749 spa_close(spa, FTAG); 1750 return (SET_ERROR(EINVAL)); 1751 } 1752 1753 spa_upgrade(spa, zc->zc_cookie); 1754 spa_close(spa, FTAG); 1755 1756 return (error); 1757} 1758 1759static int 1760zfs_ioc_pool_get_history(zfs_cmd_t *zc) 1761{ 1762 spa_t *spa; 1763 char *hist_buf; 1764 uint64_t size; 1765 int error; 1766 1767 if ((size = zc->zc_history_len) == 0) 1768 return (SET_ERROR(EINVAL)); 1769 1770 if ((error = spa_open(zc->zc_name, &spa, FTAG)) != 0) 1771 return (error); 1772 1773 if (spa_version(spa) < SPA_VERSION_ZPOOL_HISTORY) { 1774 spa_close(spa, FTAG); 1775 return (SET_ERROR(ENOTSUP)); 1776 } 1777 1778 hist_buf = kmem_alloc(size, KM_SLEEP); 1779 if ((error = spa_history_get(spa, &zc->zc_history_offset, 1780 &zc->zc_history_len, hist_buf)) == 0) { 1781 error = ddi_copyout(hist_buf, 1782 (void *)(uintptr_t)zc->zc_history, 1783 zc->zc_history_len, zc->zc_iflags); 1784 } 1785 1786 spa_close(spa, FTAG); 1787 kmem_free(hist_buf, size); 1788 return (error); 1789} 1790 1791static int 1792zfs_ioc_pool_reguid(zfs_cmd_t *zc) 1793{ 1794 spa_t *spa; 1795 int error; 1796 1797 error = spa_open(zc->zc_name, &spa, FTAG); 1798 if (error == 0) { 1799 error = spa_change_guid(spa); 1800 spa_close(spa, FTAG); 1801 } 1802 return (error); 1803} 1804 1805static int 1806zfs_ioc_dsobj_to_dsname(zfs_cmd_t *zc) 1807{ 1808 return (dsl_dsobj_to_dsname(zc->zc_name, zc->zc_obj, zc->zc_value)); 1809} 1810 1811/* 1812 * inputs: 1813 * zc_name name of filesystem 1814 * zc_obj object to find 1815 * 1816 * outputs: 1817 * zc_value name of object 1818 */ 1819static int 1820zfs_ioc_obj_to_path(zfs_cmd_t *zc) 1821{ 1822 objset_t *os; 1823 int error; 1824 1825 /* XXX reading from objset not owned */ 1826 if ((error = dmu_objset_hold(zc->zc_name, FTAG, &os)) != 0) 1827 return (error); 1828 if (dmu_objset_type(os) != DMU_OST_ZFS) { 1829 dmu_objset_rele(os, FTAG); 1830 return (SET_ERROR(EINVAL)); 1831 } 1832 error = zfs_obj_to_path(os, zc->zc_obj, zc->zc_value, 1833 sizeof (zc->zc_value)); 1834 dmu_objset_rele(os, FTAG); 1835 1836 return (error); 1837} 1838 1839/* 1840 * inputs: 1841 * zc_name name of filesystem 1842 * zc_obj object to find 1843 * 1844 * outputs: 1845 * zc_stat stats on object 1846 * zc_value path to object 1847 */ 1848static int 1849zfs_ioc_obj_to_stats(zfs_cmd_t *zc) 1850{ 1851 objset_t *os; 1852 int error; 1853 1854 /* XXX reading from objset not owned */ 1855 if ((error = dmu_objset_hold(zc->zc_name, FTAG, &os)) != 0) 1856 return (error); 1857 if (dmu_objset_type(os) != DMU_OST_ZFS) { 1858 dmu_objset_rele(os, FTAG); 1859 return (SET_ERROR(EINVAL)); 1860 } 1861 error = zfs_obj_to_stats(os, zc->zc_obj, &zc->zc_stat, zc->zc_value, 1862 sizeof (zc->zc_value)); 1863 dmu_objset_rele(os, FTAG); 1864 1865 return (error); 1866} 1867 1868static int 1869zfs_ioc_vdev_add(zfs_cmd_t *zc) 1870{ 1871 spa_t *spa; 1872 int error; 1873 nvlist_t *config, **l2cache, **spares; 1874 uint_t nl2cache = 0, nspares = 0; 1875 1876 error = spa_open(zc->zc_name, &spa, FTAG); 1877 if (error != 0) 1878 return (error); 1879 1880 error = get_nvlist(zc->zc_nvlist_conf, zc->zc_nvlist_conf_size, 1881 zc->zc_iflags, &config); 1882 (void) nvlist_lookup_nvlist_array(config, ZPOOL_CONFIG_L2CACHE, 1883 &l2cache, &nl2cache); 1884 1885 (void) nvlist_lookup_nvlist_array(config, ZPOOL_CONFIG_SPARES, 1886 &spares, &nspares); 1887 1888#ifdef illumos 1889 /* 1890 * A root pool with concatenated devices is not supported. 1891 * Thus, can not add a device to a root pool. 1892 * 1893 * Intent log device can not be added to a rootpool because 1894 * during mountroot, zil is replayed, a seperated log device 1895 * can not be accessed during the mountroot time. 1896 * 1897 * l2cache and spare devices are ok to be added to a rootpool. 1898 */ 1899 if (spa_bootfs(spa) != 0 && nl2cache == 0 && nspares == 0) { 1900 nvlist_free(config); 1901 spa_close(spa, FTAG); 1902 return (SET_ERROR(EDOM)); 1903 } 1904#endif /* illumos */ 1905 1906 if (error == 0) { 1907 error = spa_vdev_add(spa, config); 1908 nvlist_free(config); 1909 } 1910 spa_close(spa, FTAG); 1911 return (error); 1912} 1913 1914/* 1915 * inputs: 1916 * zc_name name of the pool 1917 * zc_nvlist_conf nvlist of devices to remove 1918 * zc_cookie to stop the remove? 1919 */ 1920static int 1921zfs_ioc_vdev_remove(zfs_cmd_t *zc) 1922{ 1923 spa_t *spa; 1924 int error; 1925 1926 error = spa_open(zc->zc_name, &spa, FTAG); 1927 if (error != 0) 1928 return (error); 1929 error = spa_vdev_remove(spa, zc->zc_guid, B_FALSE); 1930 spa_close(spa, FTAG); 1931 return (error); 1932} 1933 1934static int 1935zfs_ioc_vdev_set_state(zfs_cmd_t *zc) 1936{ 1937 spa_t *spa; 1938 int error; 1939 vdev_state_t newstate = VDEV_STATE_UNKNOWN; 1940 1941 if ((error = spa_open(zc->zc_name, &spa, FTAG)) != 0) 1942 return (error); 1943 switch (zc->zc_cookie) { 1944 case VDEV_STATE_ONLINE: 1945 error = vdev_online(spa, zc->zc_guid, zc->zc_obj, &newstate); 1946 break; 1947 1948 case VDEV_STATE_OFFLINE: 1949 error = vdev_offline(spa, zc->zc_guid, zc->zc_obj); 1950 break; 1951 1952 case VDEV_STATE_FAULTED: 1953 if (zc->zc_obj != VDEV_AUX_ERR_EXCEEDED && 1954 zc->zc_obj != VDEV_AUX_EXTERNAL) 1955 zc->zc_obj = VDEV_AUX_ERR_EXCEEDED; 1956 1957 error = vdev_fault(spa, zc->zc_guid, zc->zc_obj); 1958 break; 1959 1960 case VDEV_STATE_DEGRADED: 1961 if (zc->zc_obj != VDEV_AUX_ERR_EXCEEDED && 1962 zc->zc_obj != VDEV_AUX_EXTERNAL) 1963 zc->zc_obj = VDEV_AUX_ERR_EXCEEDED; 1964 1965 error = vdev_degrade(spa, zc->zc_guid, zc->zc_obj); 1966 break; 1967 1968 default: 1969 error = SET_ERROR(EINVAL); 1970 } 1971 zc->zc_cookie = newstate; 1972 spa_close(spa, FTAG); 1973 return (error); 1974} 1975 1976static int 1977zfs_ioc_vdev_attach(zfs_cmd_t *zc) 1978{ 1979 spa_t *spa; 1980 int replacing = zc->zc_cookie; 1981 nvlist_t *config; 1982 int error; 1983 1984 if ((error = spa_open(zc->zc_name, &spa, FTAG)) != 0) 1985 return (error); 1986 1987 if ((error = get_nvlist(zc->zc_nvlist_conf, zc->zc_nvlist_conf_size, 1988 zc->zc_iflags, &config)) == 0) { 1989 error = spa_vdev_attach(spa, zc->zc_guid, config, replacing); 1990 nvlist_free(config); 1991 } 1992 1993 spa_close(spa, FTAG); 1994 return (error); 1995} 1996 1997static int 1998zfs_ioc_vdev_detach(zfs_cmd_t *zc) 1999{ 2000 spa_t *spa; 2001 int error; 2002 2003 if ((error = spa_open(zc->zc_name, &spa, FTAG)) != 0) 2004 return (error); 2005 2006 error = spa_vdev_detach(spa, zc->zc_guid, 0, B_FALSE); 2007 2008 spa_close(spa, FTAG); 2009 return (error); 2010} 2011 2012static int 2013zfs_ioc_vdev_split(zfs_cmd_t *zc) 2014{ 2015 spa_t *spa; 2016 nvlist_t *config, *props = NULL; 2017 int error; 2018 boolean_t exp = !!(zc->zc_cookie & ZPOOL_EXPORT_AFTER_SPLIT); 2019 2020 if ((error = spa_open(zc->zc_name, &spa, FTAG)) != 0) 2021 return (error); 2022 2023 if (error = get_nvlist(zc->zc_nvlist_conf, zc->zc_nvlist_conf_size, 2024 zc->zc_iflags, &config)) { 2025 spa_close(spa, FTAG); 2026 return (error); 2027 } 2028 2029 if (zc->zc_nvlist_src_size != 0 && (error = 2030 get_nvlist(zc->zc_nvlist_src, zc->zc_nvlist_src_size, 2031 zc->zc_iflags, &props))) { 2032 spa_close(spa, FTAG); 2033 nvlist_free(config); 2034 return (error); 2035 } 2036 2037 error = spa_vdev_split_mirror(spa, zc->zc_string, config, props, exp); 2038 2039 spa_close(spa, FTAG); 2040 2041 nvlist_free(config); 2042 nvlist_free(props); 2043 2044 return (error); 2045} 2046 2047static int 2048zfs_ioc_vdev_setpath(zfs_cmd_t *zc) 2049{ 2050 spa_t *spa; 2051 char *path = zc->zc_value; 2052 uint64_t guid = zc->zc_guid; 2053 int error; 2054 2055 error = spa_open(zc->zc_name, &spa, FTAG); 2056 if (error != 0) 2057 return (error); 2058 2059 error = spa_vdev_setpath(spa, guid, path); 2060 spa_close(spa, FTAG); 2061 return (error); 2062} 2063 2064static int 2065zfs_ioc_vdev_setfru(zfs_cmd_t *zc) 2066{ 2067 spa_t *spa; 2068 char *fru = zc->zc_value; 2069 uint64_t guid = zc->zc_guid; 2070 int error; 2071 2072 error = spa_open(zc->zc_name, &spa, FTAG); 2073 if (error != 0) 2074 return (error); 2075 2076 error = spa_vdev_setfru(spa, guid, fru); 2077 spa_close(spa, FTAG); 2078 return (error); 2079} 2080 2081static int 2082zfs_ioc_objset_stats_impl(zfs_cmd_t *zc, objset_t *os) 2083{ 2084 int error = 0; 2085 nvlist_t *nv; 2086 2087 dmu_objset_fast_stat(os, &zc->zc_objset_stats); 2088 2089 if (zc->zc_nvlist_dst != 0 && 2090 (error = dsl_prop_get_all(os, &nv)) == 0) { 2091 dmu_objset_stats(os, nv); 2092 /* 2093 * NB: zvol_get_stats() will read the objset contents, 2094 * which we aren't supposed to do with a 2095 * DS_MODE_USER hold, because it could be 2096 * inconsistent. So this is a bit of a workaround... 2097 * XXX reading with out owning 2098 */ 2099 if (!zc->zc_objset_stats.dds_inconsistent && 2100 dmu_objset_type(os) == DMU_OST_ZVOL) { 2101 error = zvol_get_stats(os, nv); 2102 if (error == EIO) 2103 return (error); 2104 VERIFY0(error); 2105 } 2106 error = put_nvlist(zc, nv); 2107 nvlist_free(nv); 2108 } 2109 2110 return (error); 2111} 2112 2113/* 2114 * inputs: 2115 * zc_name name of filesystem 2116 * zc_nvlist_dst_size size of buffer for property nvlist 2117 * 2118 * outputs: 2119 * zc_objset_stats stats 2120 * zc_nvlist_dst property nvlist 2121 * zc_nvlist_dst_size size of property nvlist 2122 */ 2123static int 2124zfs_ioc_objset_stats(zfs_cmd_t *zc) 2125{ 2126 objset_t *os; 2127 int error; 2128 2129 error = dmu_objset_hold(zc->zc_name, FTAG, &os); 2130 if (error == 0) { 2131 error = zfs_ioc_objset_stats_impl(zc, os); 2132 dmu_objset_rele(os, FTAG); 2133 } 2134 2135 if (error == ENOMEM) 2136 error = 0; 2137 return (error); 2138} 2139 2140/* 2141 * inputs: 2142 * zc_name name of filesystem 2143 * zc_nvlist_dst_size size of buffer for property nvlist 2144 * 2145 * outputs: 2146 * zc_nvlist_dst received property nvlist 2147 * zc_nvlist_dst_size size of received property nvlist 2148 * 2149 * Gets received properties (distinct from local properties on or after 2150 * SPA_VERSION_RECVD_PROPS) for callers who want to differentiate received from 2151 * local property values. 2152 */ 2153static int 2154zfs_ioc_objset_recvd_props(zfs_cmd_t *zc) 2155{ 2156 int error = 0; 2157 nvlist_t *nv; 2158 2159 /* 2160 * Without this check, we would return local property values if the 2161 * caller has not already received properties on or after 2162 * SPA_VERSION_RECVD_PROPS. 2163 */ 2164 if (!dsl_prop_get_hasrecvd(zc->zc_name)) 2165 return (SET_ERROR(ENOTSUP)); 2166 2167 if (zc->zc_nvlist_dst != 0 && 2168 (error = dsl_prop_get_received(zc->zc_name, &nv)) == 0) { 2169 error = put_nvlist(zc, nv); 2170 nvlist_free(nv); 2171 } 2172 2173 return (error); 2174} 2175 2176static int 2177nvl_add_zplprop(objset_t *os, nvlist_t *props, zfs_prop_t prop) 2178{ 2179 uint64_t value; 2180 int error; 2181 2182 /* 2183 * zfs_get_zplprop() will either find a value or give us 2184 * the default value (if there is one). 2185 */ 2186 if ((error = zfs_get_zplprop(os, prop, &value)) != 0) 2187 return (error); 2188 VERIFY(nvlist_add_uint64(props, zfs_prop_to_name(prop), value) == 0); 2189 return (0); 2190} 2191 2192/* 2193 * inputs: 2194 * zc_name name of filesystem 2195 * zc_nvlist_dst_size size of buffer for zpl property nvlist 2196 * 2197 * outputs: 2198 * zc_nvlist_dst zpl property nvlist 2199 * zc_nvlist_dst_size size of zpl property nvlist 2200 */ 2201static int 2202zfs_ioc_objset_zplprops(zfs_cmd_t *zc) 2203{ 2204 objset_t *os; 2205 int err; 2206 2207 /* XXX reading without owning */ 2208 if (err = dmu_objset_hold(zc->zc_name, FTAG, &os)) 2209 return (err); 2210 2211 dmu_objset_fast_stat(os, &zc->zc_objset_stats); 2212 2213 /* 2214 * NB: nvl_add_zplprop() will read the objset contents, 2215 * which we aren't supposed to do with a DS_MODE_USER 2216 * hold, because it could be inconsistent. 2217 */ 2218 if (zc->zc_nvlist_dst != 0 && 2219 !zc->zc_objset_stats.dds_inconsistent && 2220 dmu_objset_type(os) == DMU_OST_ZFS) { 2221 nvlist_t *nv; 2222 2223 VERIFY(nvlist_alloc(&nv, NV_UNIQUE_NAME, KM_SLEEP) == 0); 2224 if ((err = nvl_add_zplprop(os, nv, ZFS_PROP_VERSION)) == 0 && 2225 (err = nvl_add_zplprop(os, nv, ZFS_PROP_NORMALIZE)) == 0 && 2226 (err = nvl_add_zplprop(os, nv, ZFS_PROP_UTF8ONLY)) == 0 && 2227 (err = nvl_add_zplprop(os, nv, ZFS_PROP_CASE)) == 0) 2228 err = put_nvlist(zc, nv); 2229 nvlist_free(nv); 2230 } else { 2231 err = SET_ERROR(ENOENT); 2232 } 2233 dmu_objset_rele(os, FTAG); 2234 return (err); 2235} 2236 2237boolean_t 2238dataset_name_hidden(const char *name) 2239{ 2240 /* 2241 * Skip over datasets that are not visible in this zone, 2242 * internal datasets (which have a $ in their name), and 2243 * temporary datasets (which have a % in their name). 2244 */ 2245 if (strchr(name, '$') != NULL) 2246 return (B_TRUE); 2247 if (strchr(name, '%') != NULL) 2248 return (B_TRUE); 2249 if (!INGLOBALZONE(curthread) && !zone_dataset_visible(name, NULL)) 2250 return (B_TRUE); 2251 return (B_FALSE); 2252} 2253 2254/* 2255 * inputs: 2256 * zc_name name of filesystem 2257 * zc_cookie zap cursor 2258 * zc_nvlist_dst_size size of buffer for property nvlist 2259 * 2260 * outputs: 2261 * zc_name name of next filesystem 2262 * zc_cookie zap cursor 2263 * zc_objset_stats stats 2264 * zc_nvlist_dst property nvlist 2265 * zc_nvlist_dst_size size of property nvlist 2266 */ 2267static int 2268zfs_ioc_dataset_list_next(zfs_cmd_t *zc) 2269{ 2270 objset_t *os; 2271 int error; 2272 char *p; 2273 size_t orig_len = strlen(zc->zc_name); 2274 2275top: 2276 if (error = dmu_objset_hold(zc->zc_name, FTAG, &os)) { 2277 if (error == ENOENT) 2278 error = SET_ERROR(ESRCH); 2279 return (error); 2280 } 2281 2282 p = strrchr(zc->zc_name, '/'); 2283 if (p == NULL || p[1] != '\0') 2284 (void) strlcat(zc->zc_name, "/", sizeof (zc->zc_name)); 2285 p = zc->zc_name + strlen(zc->zc_name); 2286 2287 do { 2288 error = dmu_dir_list_next(os, 2289 sizeof (zc->zc_name) - (p - zc->zc_name), p, 2290 NULL, &zc->zc_cookie); 2291 if (error == ENOENT) 2292 error = SET_ERROR(ESRCH); 2293 } while (error == 0 && dataset_name_hidden(zc->zc_name)); 2294 dmu_objset_rele(os, FTAG); 2295 2296 /* 2297 * If it's an internal dataset (ie. with a '$' in its name), 2298 * don't try to get stats for it, otherwise we'll return ENOENT. 2299 */ 2300 if (error == 0 && strchr(zc->zc_name, '$') == NULL) { 2301 error = zfs_ioc_objset_stats(zc); /* fill in the stats */ 2302 if (error == ENOENT) { 2303 /* We lost a race with destroy, get the next one. */ 2304 zc->zc_name[orig_len] = '\0'; 2305 goto top; 2306 } 2307 } 2308 return (error); 2309} 2310 2311/* 2312 * inputs: 2313 * zc_name name of filesystem 2314 * zc_cookie zap cursor 2315 * zc_nvlist_dst_size size of buffer for property nvlist 2316 * zc_simple when set, only name is requested 2317 * 2318 * outputs: 2319 * zc_name name of next snapshot 2320 * zc_objset_stats stats 2321 * zc_nvlist_dst property nvlist 2322 * zc_nvlist_dst_size size of property nvlist 2323 */ 2324static int 2325zfs_ioc_snapshot_list_next(zfs_cmd_t *zc) 2326{ 2327 objset_t *os; 2328 int error; 2329 2330 error = dmu_objset_hold(zc->zc_name, FTAG, &os); 2331 if (error != 0) { 2332 return (error == ENOENT ? ESRCH : error); 2333 } 2334 2335 /* 2336 * A dataset name of maximum length cannot have any snapshots, 2337 * so exit immediately. 2338 */ 2339 if (strlcat(zc->zc_name, "@", sizeof (zc->zc_name)) >= MAXNAMELEN) { 2340 dmu_objset_rele(os, FTAG); 2341 return (SET_ERROR(ESRCH)); 2342 } 2343 2344 error = dmu_snapshot_list_next(os, 2345 sizeof (zc->zc_name) - strlen(zc->zc_name), 2346 zc->zc_name + strlen(zc->zc_name), &zc->zc_obj, &zc->zc_cookie, 2347 NULL); 2348 2349 if (error == 0 && !zc->zc_simple) { 2350 dsl_dataset_t *ds; 2351 dsl_pool_t *dp = os->os_dsl_dataset->ds_dir->dd_pool; 2352 2353 error = dsl_dataset_hold_obj(dp, zc->zc_obj, FTAG, &ds); 2354 if (error == 0) { 2355 objset_t *ossnap; 2356 2357 error = dmu_objset_from_ds(ds, &ossnap); 2358 if (error == 0) 2359 error = zfs_ioc_objset_stats_impl(zc, ossnap); 2360 dsl_dataset_rele(ds, FTAG); 2361 } 2362 } else if (error == ENOENT) { 2363 error = SET_ERROR(ESRCH); 2364 } 2365 2366 dmu_objset_rele(os, FTAG); 2367 /* if we failed, undo the @ that we tacked on to zc_name */ 2368 if (error != 0) 2369 *strchr(zc->zc_name, '@') = '\0'; 2370 return (error); 2371} 2372 2373static int 2374zfs_prop_set_userquota(const char *dsname, nvpair_t *pair) 2375{ 2376 const char *propname = nvpair_name(pair); 2377 uint64_t *valary; 2378 unsigned int vallen; 2379 const char *domain; 2380 char *dash; 2381 zfs_userquota_prop_t type; 2382 uint64_t rid; 2383 uint64_t quota; 2384 zfsvfs_t *zfsvfs; 2385 int err; 2386 2387 if (nvpair_type(pair) == DATA_TYPE_NVLIST) { 2388 nvlist_t *attrs; 2389 VERIFY(nvpair_value_nvlist(pair, &attrs) == 0); 2390 if (nvlist_lookup_nvpair(attrs, ZPROP_VALUE, 2391 &pair) != 0) 2392 return (SET_ERROR(EINVAL)); 2393 } 2394 2395 /* 2396 * A correctly constructed propname is encoded as 2397 * userquota@<rid>-<domain>. 2398 */ 2399 if ((dash = strchr(propname, '-')) == NULL || 2400 nvpair_value_uint64_array(pair, &valary, &vallen) != 0 || 2401 vallen != 3) 2402 return (SET_ERROR(EINVAL)); 2403 2404 domain = dash + 1; 2405 type = valary[0]; 2406 rid = valary[1]; 2407 quota = valary[2]; 2408 2409 err = zfsvfs_hold(dsname, FTAG, &zfsvfs, B_FALSE); 2410 if (err == 0) { 2411 err = zfs_set_userquota(zfsvfs, type, domain, rid, quota); 2412 zfsvfs_rele(zfsvfs, FTAG); 2413 } 2414 2415 return (err); 2416} 2417 2418/* 2419 * If the named property is one that has a special function to set its value, 2420 * return 0 on success and a positive error code on failure; otherwise if it is 2421 * not one of the special properties handled by this function, return -1. 2422 * 2423 * XXX: It would be better for callers of the property interface if we handled 2424 * these special cases in dsl_prop.c (in the dsl layer). 2425 */ 2426static int 2427zfs_prop_set_special(const char *dsname, zprop_source_t source, 2428 nvpair_t *pair) 2429{ 2430 const char *propname = nvpair_name(pair); 2431 zfs_prop_t prop = zfs_name_to_prop(propname); 2432 uint64_t intval; 2433 int err = -1; 2434 2435 if (prop == ZPROP_INVAL) { 2436 if (zfs_prop_userquota(propname)) 2437 return (zfs_prop_set_userquota(dsname, pair)); 2438 return (-1); 2439 } 2440 2441 if (nvpair_type(pair) == DATA_TYPE_NVLIST) { 2442 nvlist_t *attrs; 2443 VERIFY(nvpair_value_nvlist(pair, &attrs) == 0); 2444 VERIFY(nvlist_lookup_nvpair(attrs, ZPROP_VALUE, 2445 &pair) == 0); 2446 } 2447 2448 if (zfs_prop_get_type(prop) == PROP_TYPE_STRING) 2449 return (-1); 2450 2451 VERIFY(0 == nvpair_value_uint64(pair, &intval)); 2452 2453 switch (prop) { 2454 case ZFS_PROP_QUOTA: 2455 err = dsl_dir_set_quota(dsname, source, intval); 2456 break; 2457 case ZFS_PROP_REFQUOTA: 2458 err = dsl_dataset_set_refquota(dsname, source, intval); 2459 break; 2460 case ZFS_PROP_FILESYSTEM_LIMIT: 2461 case ZFS_PROP_SNAPSHOT_LIMIT: 2462 if (intval == UINT64_MAX) { 2463 /* clearing the limit, just do it */ 2464 err = 0; 2465 } else { 2466 err = dsl_dir_activate_fs_ss_limit(dsname); 2467 } 2468 /* 2469 * Set err to -1 to force the zfs_set_prop_nvlist code down the 2470 * default path to set the value in the nvlist. 2471 */ 2472 if (err == 0) 2473 err = -1; 2474 break; 2475 case ZFS_PROP_RESERVATION: 2476 err = dsl_dir_set_reservation(dsname, source, intval); 2477 break; 2478 case ZFS_PROP_REFRESERVATION: 2479 err = dsl_dataset_set_refreservation(dsname, source, intval); 2480 break; 2481 case ZFS_PROP_VOLSIZE: 2482 err = zvol_set_volsize(dsname, intval); 2483 break; 2484 case ZFS_PROP_VERSION: 2485 { 2486 zfsvfs_t *zfsvfs; 2487 2488 if ((err = zfsvfs_hold(dsname, FTAG, &zfsvfs, B_TRUE)) != 0) 2489 break; 2490 2491 err = zfs_set_version(zfsvfs, intval); 2492 zfsvfs_rele(zfsvfs, FTAG); 2493 2494 if (err == 0 && intval >= ZPL_VERSION_USERSPACE) { 2495 zfs_cmd_t *zc; 2496 2497 zc = kmem_zalloc(sizeof (zfs_cmd_t), KM_SLEEP); 2498 (void) strcpy(zc->zc_name, dsname); 2499 (void) zfs_ioc_userspace_upgrade(zc); 2500 kmem_free(zc, sizeof (zfs_cmd_t)); 2501 } 2502 break; 2503 } 2504 default: 2505 err = -1; 2506 } 2507 2508 return (err); 2509} 2510 2511/* 2512 * This function is best effort. If it fails to set any of the given properties, 2513 * it continues to set as many as it can and returns the last error 2514 * encountered. If the caller provides a non-NULL errlist, it will be filled in 2515 * with the list of names of all the properties that failed along with the 2516 * corresponding error numbers. 2517 * 2518 * If every property is set successfully, zero is returned and errlist is not 2519 * modified. 2520 */ 2521int 2522zfs_set_prop_nvlist(const char *dsname, zprop_source_t source, nvlist_t *nvl, 2523 nvlist_t *errlist) 2524{ 2525 nvpair_t *pair; 2526 nvpair_t *propval; 2527 int rv = 0; 2528 uint64_t intval; 2529 char *strval; 2530 nvlist_t *genericnvl = fnvlist_alloc(); 2531 nvlist_t *retrynvl = fnvlist_alloc(); 2532 2533retry: 2534 pair = NULL; 2535 while ((pair = nvlist_next_nvpair(nvl, pair)) != NULL) { 2536 const char *propname = nvpair_name(pair); 2537 zfs_prop_t prop = zfs_name_to_prop(propname); 2538 int err = 0; 2539 2540 /* decode the property value */ 2541 propval = pair; 2542 if (nvpair_type(pair) == DATA_TYPE_NVLIST) { 2543 nvlist_t *attrs; 2544 attrs = fnvpair_value_nvlist(pair); 2545 if (nvlist_lookup_nvpair(attrs, ZPROP_VALUE, 2546 &propval) != 0) 2547 err = SET_ERROR(EINVAL); 2548 } 2549 2550 /* Validate value type */ 2551 if (err == 0 && prop == ZPROP_INVAL) { 2552 if (zfs_prop_user(propname)) { 2553 if (nvpair_type(propval) != DATA_TYPE_STRING) 2554 err = SET_ERROR(EINVAL); 2555 } else if (zfs_prop_userquota(propname)) { 2556 if (nvpair_type(propval) != 2557 DATA_TYPE_UINT64_ARRAY) 2558 err = SET_ERROR(EINVAL); 2559 } else { 2560 err = SET_ERROR(EINVAL); 2561 } 2562 } else if (err == 0) { 2563 if (nvpair_type(propval) == DATA_TYPE_STRING) { 2564 if (zfs_prop_get_type(prop) != PROP_TYPE_STRING) 2565 err = SET_ERROR(EINVAL); 2566 } else if (nvpair_type(propval) == DATA_TYPE_UINT64) { 2567 const char *unused; 2568 2569 intval = fnvpair_value_uint64(propval); 2570 2571 switch (zfs_prop_get_type(prop)) { 2572 case PROP_TYPE_NUMBER: 2573 break; 2574 case PROP_TYPE_STRING: 2575 err = SET_ERROR(EINVAL); 2576 break; 2577 case PROP_TYPE_INDEX: 2578 if (zfs_prop_index_to_string(prop, 2579 intval, &unused) != 0) 2580 err = SET_ERROR(EINVAL); 2581 break; 2582 default: 2583 cmn_err(CE_PANIC, 2584 "unknown property type"); 2585 } 2586 } else { 2587 err = SET_ERROR(EINVAL); 2588 } 2589 } 2590 2591 /* Validate permissions */ 2592 if (err == 0) 2593 err = zfs_check_settable(dsname, pair, CRED()); 2594 2595 if (err == 0) { 2596 err = zfs_prop_set_special(dsname, source, pair); 2597 if (err == -1) { 2598 /* 2599 * For better performance we build up a list of 2600 * properties to set in a single transaction. 2601 */ 2602 err = nvlist_add_nvpair(genericnvl, pair); 2603 } else if (err != 0 && nvl != retrynvl) { 2604 /* 2605 * This may be a spurious error caused by 2606 * receiving quota and reservation out of order. 2607 * Try again in a second pass. 2608 */ 2609 err = nvlist_add_nvpair(retrynvl, pair); 2610 } 2611 } 2612 2613 if (err != 0) { 2614 if (errlist != NULL) 2615 fnvlist_add_int32(errlist, propname, err); 2616 rv = err; 2617 } 2618 } 2619 2620 if (nvl != retrynvl && !nvlist_empty(retrynvl)) { 2621 nvl = retrynvl; 2622 goto retry; 2623 } 2624 2625 if (!nvlist_empty(genericnvl) && 2626 dsl_props_set(dsname, source, genericnvl) != 0) { 2627 /* 2628 * If this fails, we still want to set as many properties as we 2629 * can, so try setting them individually. 2630 */ 2631 pair = NULL; 2632 while ((pair = nvlist_next_nvpair(genericnvl, pair)) != NULL) { 2633 const char *propname = nvpair_name(pair); 2634 int err = 0; 2635 2636 propval = pair; 2637 if (nvpair_type(pair) == DATA_TYPE_NVLIST) { 2638 nvlist_t *attrs; 2639 attrs = fnvpair_value_nvlist(pair); 2640 propval = fnvlist_lookup_nvpair(attrs, 2641 ZPROP_VALUE); 2642 } 2643 2644 if (nvpair_type(propval) == DATA_TYPE_STRING) { 2645 strval = fnvpair_value_string(propval); 2646 err = dsl_prop_set_string(dsname, propname, 2647 source, strval); 2648 } else { 2649 intval = fnvpair_value_uint64(propval); 2650 err = dsl_prop_set_int(dsname, propname, source, 2651 intval); 2652 } 2653 2654 if (err != 0) { 2655 if (errlist != NULL) { 2656 fnvlist_add_int32(errlist, propname, 2657 err); 2658 } 2659 rv = err; 2660 } 2661 } 2662 } 2663 nvlist_free(genericnvl); 2664 nvlist_free(retrynvl); 2665 2666 return (rv); 2667} 2668 2669/* 2670 * Check that all the properties are valid user properties. 2671 */ 2672static int 2673zfs_check_userprops(const char *fsname, nvlist_t *nvl) 2674{ 2675 nvpair_t *pair = NULL; 2676 int error = 0; 2677 2678 while ((pair = nvlist_next_nvpair(nvl, pair)) != NULL) { 2679 const char *propname = nvpair_name(pair); 2680 2681 if (!zfs_prop_user(propname) || 2682 nvpair_type(pair) != DATA_TYPE_STRING) 2683 return (SET_ERROR(EINVAL)); 2684 2685 if (error = zfs_secpolicy_write_perms(fsname, 2686 ZFS_DELEG_PERM_USERPROP, CRED())) 2687 return (error); 2688 2689 if (strlen(propname) >= ZAP_MAXNAMELEN) 2690 return (SET_ERROR(ENAMETOOLONG)); 2691 2692 if (strlen(fnvpair_value_string(pair)) >= ZAP_MAXVALUELEN) 2693 return (E2BIG); 2694 } 2695 return (0); 2696} 2697 2698static void 2699props_skip(nvlist_t *props, nvlist_t *skipped, nvlist_t **newprops) 2700{ 2701 nvpair_t *pair; 2702 2703 VERIFY(nvlist_alloc(newprops, NV_UNIQUE_NAME, KM_SLEEP) == 0); 2704 2705 pair = NULL; 2706 while ((pair = nvlist_next_nvpair(props, pair)) != NULL) { 2707 if (nvlist_exists(skipped, nvpair_name(pair))) 2708 continue; 2709 2710 VERIFY(nvlist_add_nvpair(*newprops, pair) == 0); 2711 } 2712} 2713 2714static int 2715clear_received_props(const char *dsname, nvlist_t *props, 2716 nvlist_t *skipped) 2717{ 2718 int err = 0; 2719 nvlist_t *cleared_props = NULL; 2720 props_skip(props, skipped, &cleared_props); 2721 if (!nvlist_empty(cleared_props)) { 2722 /* 2723 * Acts on local properties until the dataset has received 2724 * properties at least once on or after SPA_VERSION_RECVD_PROPS. 2725 */ 2726 zprop_source_t flags = (ZPROP_SRC_NONE | 2727 (dsl_prop_get_hasrecvd(dsname) ? ZPROP_SRC_RECEIVED : 0)); 2728 err = zfs_set_prop_nvlist(dsname, flags, cleared_props, NULL); 2729 } 2730 nvlist_free(cleared_props); 2731 return (err); 2732} 2733 2734/* 2735 * inputs: 2736 * zc_name name of filesystem 2737 * zc_value name of property to set 2738 * zc_nvlist_src{_size} nvlist of properties to apply 2739 * zc_cookie received properties flag 2740 * 2741 * outputs: 2742 * zc_nvlist_dst{_size} error for each unapplied received property 2743 */ 2744static int 2745zfs_ioc_set_prop(zfs_cmd_t *zc) 2746{ 2747 nvlist_t *nvl; 2748 boolean_t received = zc->zc_cookie; 2749 zprop_source_t source = (received ? ZPROP_SRC_RECEIVED : 2750 ZPROP_SRC_LOCAL); 2751 nvlist_t *errors; 2752 int error; 2753 2754 if ((error = get_nvlist(zc->zc_nvlist_src, zc->zc_nvlist_src_size, 2755 zc->zc_iflags, &nvl)) != 0) 2756 return (error); 2757 2758 if (received) { 2759 nvlist_t *origprops; 2760 2761 if (dsl_prop_get_received(zc->zc_name, &origprops) == 0) { 2762 (void) clear_received_props(zc->zc_name, 2763 origprops, nvl); 2764 nvlist_free(origprops); 2765 } 2766 2767 error = dsl_prop_set_hasrecvd(zc->zc_name); 2768 } 2769 2770 errors = fnvlist_alloc(); 2771 if (error == 0) 2772 error = zfs_set_prop_nvlist(zc->zc_name, source, nvl, errors); 2773 2774 if (zc->zc_nvlist_dst != 0 && errors != NULL) { 2775 (void) put_nvlist(zc, errors); 2776 } 2777 2778 nvlist_free(errors); 2779 nvlist_free(nvl); 2780 return (error); 2781} 2782 2783/* 2784 * inputs: 2785 * zc_name name of filesystem 2786 * zc_value name of property to inherit 2787 * zc_cookie revert to received value if TRUE 2788 * 2789 * outputs: none 2790 */ 2791static int 2792zfs_ioc_inherit_prop(zfs_cmd_t *zc) 2793{ 2794 const char *propname = zc->zc_value; 2795 zfs_prop_t prop = zfs_name_to_prop(propname); 2796 boolean_t received = zc->zc_cookie; 2797 zprop_source_t source = (received 2798 ? ZPROP_SRC_NONE /* revert to received value, if any */ 2799 : ZPROP_SRC_INHERITED); /* explicitly inherit */ 2800 2801 if (received) { 2802 nvlist_t *dummy; 2803 nvpair_t *pair; 2804 zprop_type_t type; 2805 int err; 2806 2807 /* 2808 * zfs_prop_set_special() expects properties in the form of an 2809 * nvpair with type info. 2810 */ 2811 if (prop == ZPROP_INVAL) { 2812 if (!zfs_prop_user(propname)) 2813 return (SET_ERROR(EINVAL)); 2814 2815 type = PROP_TYPE_STRING; 2816 } else if (prop == ZFS_PROP_VOLSIZE || 2817 prop == ZFS_PROP_VERSION) { 2818 return (SET_ERROR(EINVAL)); 2819 } else { 2820 type = zfs_prop_get_type(prop); 2821 } 2822 2823 VERIFY(nvlist_alloc(&dummy, NV_UNIQUE_NAME, KM_SLEEP) == 0); 2824 2825 switch (type) { 2826 case PROP_TYPE_STRING: 2827 VERIFY(0 == nvlist_add_string(dummy, propname, "")); 2828 break; 2829 case PROP_TYPE_NUMBER: 2830 case PROP_TYPE_INDEX: 2831 VERIFY(0 == nvlist_add_uint64(dummy, propname, 0)); 2832 break; 2833 default: 2834 nvlist_free(dummy); 2835 return (SET_ERROR(EINVAL)); 2836 } 2837 2838 pair = nvlist_next_nvpair(dummy, NULL); 2839 err = zfs_prop_set_special(zc->zc_name, source, pair); 2840 nvlist_free(dummy); 2841 if (err != -1) 2842 return (err); /* special property already handled */ 2843 } else { 2844 /* 2845 * Only check this in the non-received case. We want to allow 2846 * 'inherit -S' to revert non-inheritable properties like quota 2847 * and reservation to the received or default values even though 2848 * they are not considered inheritable. 2849 */ 2850 if (prop != ZPROP_INVAL && !zfs_prop_inheritable(prop)) 2851 return (SET_ERROR(EINVAL)); 2852 } 2853 2854 /* property name has been validated by zfs_secpolicy_inherit_prop() */ 2855 return (dsl_prop_inherit(zc->zc_name, zc->zc_value, source)); 2856} 2857 2858static int 2859zfs_ioc_pool_set_props(zfs_cmd_t *zc) 2860{ 2861 nvlist_t *props; 2862 spa_t *spa; 2863 int error; 2864 nvpair_t *pair; 2865 2866 if (error = get_nvlist(zc->zc_nvlist_src, zc->zc_nvlist_src_size, 2867 zc->zc_iflags, &props)) 2868 return (error); 2869 2870 /* 2871 * If the only property is the configfile, then just do a spa_lookup() 2872 * to handle the faulted case. 2873 */ 2874 pair = nvlist_next_nvpair(props, NULL); 2875 if (pair != NULL && strcmp(nvpair_name(pair), 2876 zpool_prop_to_name(ZPOOL_PROP_CACHEFILE)) == 0 && 2877 nvlist_next_nvpair(props, pair) == NULL) { 2878 mutex_enter(&spa_namespace_lock); 2879 if ((spa = spa_lookup(zc->zc_name)) != NULL) { 2880 spa_configfile_set(spa, props, B_FALSE); 2881 spa_config_sync(spa, B_FALSE, B_TRUE); 2882 } 2883 mutex_exit(&spa_namespace_lock); 2884 if (spa != NULL) { 2885 nvlist_free(props); 2886 return (0); 2887 } 2888 } 2889 2890 if ((error = spa_open(zc->zc_name, &spa, FTAG)) != 0) { 2891 nvlist_free(props); 2892 return (error); 2893 } 2894 2895 error = spa_prop_set(spa, props); 2896 2897 nvlist_free(props); 2898 spa_close(spa, FTAG); 2899 2900 return (error); 2901} 2902 2903static int 2904zfs_ioc_pool_get_props(zfs_cmd_t *zc) 2905{ 2906 spa_t *spa; 2907 int error; 2908 nvlist_t *nvp = NULL; 2909 2910 if ((error = spa_open(zc->zc_name, &spa, FTAG)) != 0) { 2911 /* 2912 * If the pool is faulted, there may be properties we can still 2913 * get (such as altroot and cachefile), so attempt to get them 2914 * anyway. 2915 */ 2916 mutex_enter(&spa_namespace_lock); 2917 if ((spa = spa_lookup(zc->zc_name)) != NULL) 2918 error = spa_prop_get(spa, &nvp); 2919 mutex_exit(&spa_namespace_lock); 2920 } else { 2921 error = spa_prop_get(spa, &nvp); 2922 spa_close(spa, FTAG); 2923 } 2924 2925 if (error == 0 && zc->zc_nvlist_dst != 0) 2926 error = put_nvlist(zc, nvp); 2927 else 2928 error = SET_ERROR(EFAULT); 2929 2930 nvlist_free(nvp); 2931 return (error); 2932} 2933 2934/* 2935 * inputs: 2936 * zc_name name of filesystem 2937 * zc_nvlist_src{_size} nvlist of delegated permissions 2938 * zc_perm_action allow/unallow flag 2939 * 2940 * outputs: none 2941 */ 2942static int 2943zfs_ioc_set_fsacl(zfs_cmd_t *zc) 2944{ 2945 int error; 2946 nvlist_t *fsaclnv = NULL; 2947 2948 if ((error = get_nvlist(zc->zc_nvlist_src, zc->zc_nvlist_src_size, 2949 zc->zc_iflags, &fsaclnv)) != 0) 2950 return (error); 2951 2952 /* 2953 * Verify nvlist is constructed correctly 2954 */ 2955 if ((error = zfs_deleg_verify_nvlist(fsaclnv)) != 0) { 2956 nvlist_free(fsaclnv); 2957 return (SET_ERROR(EINVAL)); 2958 } 2959 2960 /* 2961 * If we don't have PRIV_SYS_MOUNT, then validate 2962 * that user is allowed to hand out each permission in 2963 * the nvlist(s) 2964 */ 2965 2966 error = secpolicy_zfs(CRED()); 2967 if (error != 0) { 2968 if (zc->zc_perm_action == B_FALSE) { 2969 error = dsl_deleg_can_allow(zc->zc_name, 2970 fsaclnv, CRED()); 2971 } else { 2972 error = dsl_deleg_can_unallow(zc->zc_name, 2973 fsaclnv, CRED()); 2974 } 2975 } 2976 2977 if (error == 0) 2978 error = dsl_deleg_set(zc->zc_name, fsaclnv, zc->zc_perm_action); 2979 2980 nvlist_free(fsaclnv); 2981 return (error); 2982} 2983 2984/* 2985 * inputs: 2986 * zc_name name of filesystem 2987 * 2988 * outputs: 2989 * zc_nvlist_src{_size} nvlist of delegated permissions 2990 */ 2991static int 2992zfs_ioc_get_fsacl(zfs_cmd_t *zc) 2993{ 2994 nvlist_t *nvp; 2995 int error; 2996 2997 if ((error = dsl_deleg_get(zc->zc_name, &nvp)) == 0) { 2998 error = put_nvlist(zc, nvp); 2999 nvlist_free(nvp); 3000 } 3001 3002 return (error); 3003} 3004 3005/* 3006 * Search the vfs list for a specified resource. Returns a pointer to it 3007 * or NULL if no suitable entry is found. The caller of this routine 3008 * is responsible for releasing the returned vfs pointer. 3009 */ 3010static vfs_t * 3011zfs_get_vfs(const char *resource) 3012{ 3013 vfs_t *vfsp; 3014 3015 mtx_lock(&mountlist_mtx); 3016 TAILQ_FOREACH(vfsp, &mountlist, mnt_list) { 3017 if (strcmp(refstr_value(vfsp->vfs_resource), resource) == 0) { 3018 VFS_HOLD(vfsp); 3019 break; 3020 } 3021 } 3022 mtx_unlock(&mountlist_mtx); 3023 return (vfsp); 3024} 3025 3026/* ARGSUSED */ 3027static void 3028zfs_create_cb(objset_t *os, void *arg, cred_t *cr, dmu_tx_t *tx) 3029{ 3030 zfs_creat_t *zct = arg; 3031 3032 zfs_create_fs(os, cr, zct->zct_zplprops, tx); 3033} 3034 3035#define ZFS_PROP_UNDEFINED ((uint64_t)-1) 3036 3037/* 3038 * inputs: 3039 * os parent objset pointer (NULL if root fs) 3040 * fuids_ok fuids allowed in this version of the spa? 3041 * sa_ok SAs allowed in this version of the spa? 3042 * createprops list of properties requested by creator 3043 * 3044 * outputs: 3045 * zplprops values for the zplprops we attach to the master node object 3046 * is_ci true if requested file system will be purely case-insensitive 3047 * 3048 * Determine the settings for utf8only, normalization and 3049 * casesensitivity. Specific values may have been requested by the 3050 * creator and/or we can inherit values from the parent dataset. If 3051 * the file system is of too early a vintage, a creator can not 3052 * request settings for these properties, even if the requested 3053 * setting is the default value. We don't actually want to create dsl 3054 * properties for these, so remove them from the source nvlist after 3055 * processing. 3056 */ 3057static int 3058zfs_fill_zplprops_impl(objset_t *os, uint64_t zplver, 3059 boolean_t fuids_ok, boolean_t sa_ok, nvlist_t *createprops, 3060 nvlist_t *zplprops, boolean_t *is_ci) 3061{ 3062 uint64_t sense = ZFS_PROP_UNDEFINED; 3063 uint64_t norm = ZFS_PROP_UNDEFINED; 3064 uint64_t u8 = ZFS_PROP_UNDEFINED; 3065 3066 ASSERT(zplprops != NULL); 3067 3068 /* 3069 * Pull out creator prop choices, if any. 3070 */ 3071 if (createprops) { 3072 (void) nvlist_lookup_uint64(createprops, 3073 zfs_prop_to_name(ZFS_PROP_VERSION), &zplver); 3074 (void) nvlist_lookup_uint64(createprops, 3075 zfs_prop_to_name(ZFS_PROP_NORMALIZE), &norm); 3076 (void) nvlist_remove_all(createprops, 3077 zfs_prop_to_name(ZFS_PROP_NORMALIZE)); 3078 (void) nvlist_lookup_uint64(createprops, 3079 zfs_prop_to_name(ZFS_PROP_UTF8ONLY), &u8); 3080 (void) nvlist_remove_all(createprops, 3081 zfs_prop_to_name(ZFS_PROP_UTF8ONLY)); 3082 (void) nvlist_lookup_uint64(createprops, 3083 zfs_prop_to_name(ZFS_PROP_CASE), &sense); 3084 (void) nvlist_remove_all(createprops, 3085 zfs_prop_to_name(ZFS_PROP_CASE)); 3086 } 3087 3088 /* 3089 * If the zpl version requested is whacky or the file system 3090 * or pool is version is too "young" to support normalization 3091 * and the creator tried to set a value for one of the props, 3092 * error out. 3093 */ 3094 if ((zplver < ZPL_VERSION_INITIAL || zplver > ZPL_VERSION) || 3095 (zplver >= ZPL_VERSION_FUID && !fuids_ok) || 3096 (zplver >= ZPL_VERSION_SA && !sa_ok) || 3097 (zplver < ZPL_VERSION_NORMALIZATION && 3098 (norm != ZFS_PROP_UNDEFINED || u8 != ZFS_PROP_UNDEFINED || 3099 sense != ZFS_PROP_UNDEFINED))) 3100 return (SET_ERROR(ENOTSUP)); 3101 3102 /* 3103 * Put the version in the zplprops 3104 */ 3105 VERIFY(nvlist_add_uint64(zplprops, 3106 zfs_prop_to_name(ZFS_PROP_VERSION), zplver) == 0); 3107 3108 if (norm == ZFS_PROP_UNDEFINED) 3109 VERIFY(zfs_get_zplprop(os, ZFS_PROP_NORMALIZE, &norm) == 0); 3110 VERIFY(nvlist_add_uint64(zplprops, 3111 zfs_prop_to_name(ZFS_PROP_NORMALIZE), norm) == 0); 3112 3113 /* 3114 * If we're normalizing, names must always be valid UTF-8 strings. 3115 */ 3116 if (norm) 3117 u8 = 1; 3118 if (u8 == ZFS_PROP_UNDEFINED) 3119 VERIFY(zfs_get_zplprop(os, ZFS_PROP_UTF8ONLY, &u8) == 0); 3120 VERIFY(nvlist_add_uint64(zplprops, 3121 zfs_prop_to_name(ZFS_PROP_UTF8ONLY), u8) == 0); 3122 3123 if (sense == ZFS_PROP_UNDEFINED) 3124 VERIFY(zfs_get_zplprop(os, ZFS_PROP_CASE, &sense) == 0); 3125 VERIFY(nvlist_add_uint64(zplprops, 3126 zfs_prop_to_name(ZFS_PROP_CASE), sense) == 0); 3127 3128 if (is_ci) 3129 *is_ci = (sense == ZFS_CASE_INSENSITIVE); 3130 3131 return (0); 3132} 3133 3134static int 3135zfs_fill_zplprops(const char *dataset, nvlist_t *createprops, 3136 nvlist_t *zplprops, boolean_t *is_ci) 3137{ 3138 boolean_t fuids_ok, sa_ok; 3139 uint64_t zplver = ZPL_VERSION; 3140 objset_t *os = NULL; 3141 char parentname[MAXNAMELEN]; 3142 char *cp; 3143 spa_t *spa; 3144 uint64_t spa_vers; 3145 int error; 3146 3147 (void) strlcpy(parentname, dataset, sizeof (parentname)); 3148 cp = strrchr(parentname, '/'); 3149 ASSERT(cp != NULL); 3150 cp[0] = '\0'; 3151 3152 if ((error = spa_open(dataset, &spa, FTAG)) != 0) 3153 return (error); 3154 3155 spa_vers = spa_version(spa); 3156 spa_close(spa, FTAG); 3157 3158 zplver = zfs_zpl_version_map(spa_vers); 3159 fuids_ok = (zplver >= ZPL_VERSION_FUID); 3160 sa_ok = (zplver >= ZPL_VERSION_SA); 3161 3162 /* 3163 * Open parent object set so we can inherit zplprop values. 3164 */ 3165 if ((error = dmu_objset_hold(parentname, FTAG, &os)) != 0) 3166 return (error); 3167 3168 error = zfs_fill_zplprops_impl(os, zplver, fuids_ok, sa_ok, createprops, 3169 zplprops, is_ci); 3170 dmu_objset_rele(os, FTAG); 3171 return (error); 3172} 3173 3174static int 3175zfs_fill_zplprops_root(uint64_t spa_vers, nvlist_t *createprops, 3176 nvlist_t *zplprops, boolean_t *is_ci) 3177{ 3178 boolean_t fuids_ok; 3179 boolean_t sa_ok; 3180 uint64_t zplver = ZPL_VERSION; 3181 int error; 3182 3183 zplver = zfs_zpl_version_map(spa_vers); 3184 fuids_ok = (zplver >= ZPL_VERSION_FUID); 3185 sa_ok = (zplver >= ZPL_VERSION_SA); 3186 3187 error = zfs_fill_zplprops_impl(NULL, zplver, fuids_ok, sa_ok, 3188 createprops, zplprops, is_ci); 3189 return (error); 3190} 3191 3192/* 3193 * innvl: { 3194 * "type" -> dmu_objset_type_t (int32) 3195 * (optional) "props" -> { prop -> value } 3196 * } 3197 * 3198 * outnvl: propname -> error code (int32) 3199 */ 3200static int 3201zfs_ioc_create(const char *fsname, nvlist_t *innvl, nvlist_t *outnvl) 3202{ 3203 int error = 0; 3204 zfs_creat_t zct = { 0 }; 3205 nvlist_t *nvprops = NULL; 3206 void (*cbfunc)(objset_t *os, void *arg, cred_t *cr, dmu_tx_t *tx); 3207 int32_t type32; 3208 dmu_objset_type_t type; 3209 boolean_t is_insensitive = B_FALSE; 3210 3211 if (nvlist_lookup_int32(innvl, "type", &type32) != 0) 3212 return (SET_ERROR(EINVAL)); 3213 type = type32; 3214 (void) nvlist_lookup_nvlist(innvl, "props", &nvprops); 3215 3216 switch (type) { 3217 case DMU_OST_ZFS: 3218 cbfunc = zfs_create_cb; 3219 break; 3220 3221 case DMU_OST_ZVOL: 3222 cbfunc = zvol_create_cb; 3223 break; 3224 3225 default: 3226 cbfunc = NULL; 3227 break; 3228 } 3229 if (strchr(fsname, '@') || 3230 strchr(fsname, '%')) 3231 return (SET_ERROR(EINVAL)); 3232 3233 zct.zct_props = nvprops; 3234 3235 if (cbfunc == NULL) 3236 return (SET_ERROR(EINVAL)); 3237 3238 if (type == DMU_OST_ZVOL) { 3239 uint64_t volsize, volblocksize; 3240 3241 if (nvprops == NULL) 3242 return (SET_ERROR(EINVAL)); 3243 if (nvlist_lookup_uint64(nvprops, 3244 zfs_prop_to_name(ZFS_PROP_VOLSIZE), &volsize) != 0) 3245 return (SET_ERROR(EINVAL)); 3246 3247 if ((error = nvlist_lookup_uint64(nvprops, 3248 zfs_prop_to_name(ZFS_PROP_VOLBLOCKSIZE), 3249 &volblocksize)) != 0 && error != ENOENT) 3250 return (SET_ERROR(EINVAL)); 3251 3252 if (error != 0) 3253 volblocksize = zfs_prop_default_numeric( 3254 ZFS_PROP_VOLBLOCKSIZE); 3255 3256 if ((error = zvol_check_volblocksize( 3257 volblocksize)) != 0 || 3258 (error = zvol_check_volsize(volsize, 3259 volblocksize)) != 0) 3260 return (error); 3261 } else if (type == DMU_OST_ZFS) { 3262 int error; 3263 3264 /* 3265 * We have to have normalization and 3266 * case-folding flags correct when we do the 3267 * file system creation, so go figure them out 3268 * now. 3269 */ 3270 VERIFY(nvlist_alloc(&zct.zct_zplprops, 3271 NV_UNIQUE_NAME, KM_SLEEP) == 0); 3272 error = zfs_fill_zplprops(fsname, nvprops, 3273 zct.zct_zplprops, &is_insensitive); 3274 if (error != 0) { 3275 nvlist_free(zct.zct_zplprops); 3276 return (error); 3277 } 3278 } 3279 3280 error = dmu_objset_create(fsname, type, 3281 is_insensitive ? DS_FLAG_CI_DATASET : 0, cbfunc, &zct); 3282 nvlist_free(zct.zct_zplprops); 3283 3284 /* 3285 * It would be nice to do this atomically. 3286 */ 3287 if (error == 0) { 3288 error = zfs_set_prop_nvlist(fsname, ZPROP_SRC_LOCAL, 3289 nvprops, outnvl); 3290 if (error != 0) 3291 (void) dsl_destroy_head(fsname); 3292 } 3293#ifdef __FreeBSD__ 3294 if (error == 0 && type == DMU_OST_ZVOL) 3295 zvol_create_minors(fsname); 3296#endif 3297 return (error); 3298} 3299 3300/* 3301 * innvl: { 3302 * "origin" -> name of origin snapshot 3303 * (optional) "props" -> { prop -> value } 3304 * } 3305 * 3306 * outnvl: propname -> error code (int32) 3307 */ 3308static int 3309zfs_ioc_clone(const char *fsname, nvlist_t *innvl, nvlist_t *outnvl) 3310{ 3311 int error = 0; 3312 nvlist_t *nvprops = NULL; 3313 char *origin_name; 3314 3315 if (nvlist_lookup_string(innvl, "origin", &origin_name) != 0) 3316 return (SET_ERROR(EINVAL)); 3317 (void) nvlist_lookup_nvlist(innvl, "props", &nvprops); 3318 3319 if (strchr(fsname, '@') || 3320 strchr(fsname, '%')) 3321 return (SET_ERROR(EINVAL)); 3322 3323 if (dataset_namecheck(origin_name, NULL, NULL) != 0) 3324 return (SET_ERROR(EINVAL)); 3325 error = dmu_objset_clone(fsname, origin_name); 3326 if (error != 0) 3327 return (error); 3328 3329 /* 3330 * It would be nice to do this atomically. 3331 */ 3332 if (error == 0) { 3333 error = zfs_set_prop_nvlist(fsname, ZPROP_SRC_LOCAL, 3334 nvprops, outnvl); 3335 if (error != 0) 3336 (void) dsl_destroy_head(fsname); 3337 } 3338#ifdef __FreeBSD__ 3339 if (error == 0) 3340 zvol_create_minors(fsname); 3341#endif 3342 return (error); 3343} 3344 3345/* 3346 * innvl: { 3347 * "snaps" -> { snapshot1, snapshot2 } 3348 * (optional) "props" -> { prop -> value (string) } 3349 * } 3350 * 3351 * outnvl: snapshot -> error code (int32) 3352 */ 3353static int 3354zfs_ioc_snapshot(const char *poolname, nvlist_t *innvl, nvlist_t *outnvl) 3355{ 3356 nvlist_t *snaps; 3357 nvlist_t *props = NULL; 3358 int error, poollen; 3359 nvpair_t *pair; 3360 3361 (void) nvlist_lookup_nvlist(innvl, "props", &props); 3362 if ((error = zfs_check_userprops(poolname, props)) != 0) 3363 return (error); 3364 3365 if (!nvlist_empty(props) && 3366 zfs_earlier_version(poolname, SPA_VERSION_SNAP_PROPS)) 3367 return (SET_ERROR(ENOTSUP)); 3368 3369 if (nvlist_lookup_nvlist(innvl, "snaps", &snaps) != 0) 3370 return (SET_ERROR(EINVAL)); 3371 poollen = strlen(poolname); 3372 for (pair = nvlist_next_nvpair(snaps, NULL); pair != NULL; 3373 pair = nvlist_next_nvpair(snaps, pair)) { 3374 const char *name = nvpair_name(pair); 3375 const char *cp = strchr(name, '@'); 3376 3377 /* 3378 * The snap name must contain an @, and the part after it must 3379 * contain only valid characters. 3380 */ 3381 if (cp == NULL || 3382 zfs_component_namecheck(cp + 1, NULL, NULL) != 0) 3383 return (SET_ERROR(EINVAL)); 3384 3385 /* 3386 * The snap must be in the specified pool. 3387 */ 3388 if (strncmp(name, poolname, poollen) != 0 || 3389 (name[poollen] != '/' && name[poollen] != '@')) 3390 return (SET_ERROR(EXDEV)); 3391 3392 /* This must be the only snap of this fs. */ 3393 for (nvpair_t *pair2 = nvlist_next_nvpair(snaps, pair); 3394 pair2 != NULL; pair2 = nvlist_next_nvpair(snaps, pair2)) { 3395 if (strncmp(name, nvpair_name(pair2), cp - name + 1) 3396 == 0) { 3397 return (SET_ERROR(EXDEV)); 3398 } 3399 } 3400 } 3401 3402 error = dsl_dataset_snapshot(snaps, props, outnvl); 3403 return (error); 3404} 3405 3406/* 3407 * innvl: "message" -> string 3408 */ 3409/* ARGSUSED */ 3410static int 3411zfs_ioc_log_history(const char *unused, nvlist_t *innvl, nvlist_t *outnvl) 3412{ 3413 char *message; 3414 spa_t *spa; 3415 int error; 3416 char *poolname; 3417 3418 /* 3419 * The poolname in the ioctl is not set, we get it from the TSD, 3420 * which was set at the end of the last successful ioctl that allows 3421 * logging. The secpolicy func already checked that it is set. 3422 * Only one log ioctl is allowed after each successful ioctl, so 3423 * we clear the TSD here. 3424 */ 3425 poolname = tsd_get(zfs_allow_log_key); 3426 (void) tsd_set(zfs_allow_log_key, NULL); 3427 error = spa_open(poolname, &spa, FTAG); 3428 strfree(poolname); 3429 if (error != 0) 3430 return (error); 3431 3432 if (nvlist_lookup_string(innvl, "message", &message) != 0) { 3433 spa_close(spa, FTAG); 3434 return (SET_ERROR(EINVAL)); 3435 } 3436 3437 if (spa_version(spa) < SPA_VERSION_ZPOOL_HISTORY) { 3438 spa_close(spa, FTAG); 3439 return (SET_ERROR(ENOTSUP)); 3440 } 3441 3442 error = spa_history_log(spa, message); 3443 spa_close(spa, FTAG); 3444 return (error); 3445} 3446 3447/* 3448 * The dp_config_rwlock must not be held when calling this, because the 3449 * unmount may need to write out data. 3450 * 3451 * This function is best-effort. Callers must deal gracefully if it 3452 * remains mounted (or is remounted after this call). 3453 * 3454 * Returns 0 if the argument is not a snapshot, or it is not currently a 3455 * filesystem, or we were able to unmount it. Returns error code otherwise. 3456 */ 3457int 3458zfs_unmount_snap(const char *snapname) 3459{ 3460 vfs_t *vfsp; 3461 zfsvfs_t *zfsvfs; 3462 int err; 3463 3464 if (strchr(snapname, '@') == NULL) 3465 return (0); 3466 3467 vfsp = zfs_get_vfs(snapname); 3468 if (vfsp == NULL) 3469 return (0); 3470 3471 zfsvfs = vfsp->vfs_data; 3472 ASSERT(!dsl_pool_config_held(dmu_objset_pool(zfsvfs->z_os))); 3473 3474 err = vn_vfswlock(vfsp->vfs_vnodecovered); 3475 VFS_RELE(vfsp); 3476 if (err != 0) 3477 return (SET_ERROR(err)); 3478 3479 /* 3480 * Always force the unmount for snapshots. 3481 */ 3482 3483#ifdef illumos 3484 (void) dounmount(vfsp, MS_FORCE, kcred); 3485#else 3486 vfs_ref(vfsp); 3487 (void) dounmount(vfsp, MS_FORCE, curthread); 3488#endif 3489 return (0); 3490} 3491 3492/* ARGSUSED */ 3493static int 3494zfs_unmount_snap_cb(const char *snapname, void *arg) 3495{ 3496 return (zfs_unmount_snap(snapname)); 3497} 3498 3499/* 3500 * When a clone is destroyed, its origin may also need to be destroyed, 3501 * in which case it must be unmounted. This routine will do that unmount 3502 * if necessary. 3503 */ 3504void 3505zfs_destroy_unmount_origin(const char *fsname) 3506{ 3507 int error; 3508 objset_t *os; 3509 dsl_dataset_t *ds; 3510 3511 error = dmu_objset_hold(fsname, FTAG, &os); 3512 if (error != 0) 3513 return; 3514 ds = dmu_objset_ds(os); 3515 if (dsl_dir_is_clone(ds->ds_dir) && DS_IS_DEFER_DESTROY(ds->ds_prev)) { 3516 char originname[MAXNAMELEN]; 3517 dsl_dataset_name(ds->ds_prev, originname); 3518 dmu_objset_rele(os, FTAG); 3519 (void) zfs_unmount_snap(originname); 3520 } else { 3521 dmu_objset_rele(os, FTAG); 3522 } 3523} 3524 3525/* 3526 * innvl: { 3527 * "snaps" -> { snapshot1, snapshot2 } 3528 * (optional boolean) "defer" 3529 * } 3530 * 3531 * outnvl: snapshot -> error code (int32) 3532 * 3533 */ 3534/* ARGSUSED */ 3535static int 3536zfs_ioc_destroy_snaps(const char *poolname, nvlist_t *innvl, nvlist_t *outnvl) 3537{ 3538 int error, poollen; 3539 nvlist_t *snaps; 3540 nvpair_t *pair; 3541 boolean_t defer; 3542 3543 if (nvlist_lookup_nvlist(innvl, "snaps", &snaps) != 0) 3544 return (SET_ERROR(EINVAL)); 3545 defer = nvlist_exists(innvl, "defer"); 3546 3547 poollen = strlen(poolname); 3548 for (pair = nvlist_next_nvpair(snaps, NULL); pair != NULL; 3549 pair = nvlist_next_nvpair(snaps, pair)) { 3550 const char *name = nvpair_name(pair); 3551 3552 /* 3553 * The snap must be in the specified pool to prevent the 3554 * invalid removal of zvol minors below. 3555 */ 3556 if (strncmp(name, poolname, poollen) != 0 || 3557 (name[poollen] != '/' && name[poollen] != '@')) 3558 return (SET_ERROR(EXDEV)); 3559 3560 error = zfs_unmount_snap(name); 3561 if (error != 0) 3562 return (error); 3563#if defined(__FreeBSD__) 3564 zvol_remove_minors(name); 3565#endif 3566 } 3567 3568 return (dsl_destroy_snapshots_nvl(snaps, defer, outnvl)); 3569} 3570 3571/* 3572 * Create bookmarks. Bookmark names are of the form <fs>#<bmark>. 3573 * All bookmarks must be in the same pool. 3574 * 3575 * innvl: { 3576 * bookmark1 -> snapshot1, bookmark2 -> snapshot2 3577 * } 3578 * 3579 * outnvl: bookmark -> error code (int32) 3580 * 3581 */ 3582/* ARGSUSED */ 3583static int 3584zfs_ioc_bookmark(const char *poolname, nvlist_t *innvl, nvlist_t *outnvl) 3585{ 3586 for (nvpair_t *pair = nvlist_next_nvpair(innvl, NULL); 3587 pair != NULL; pair = nvlist_next_nvpair(innvl, pair)) { 3588 char *snap_name; 3589 3590 /* 3591 * Verify the snapshot argument. 3592 */ 3593 if (nvpair_value_string(pair, &snap_name) != 0) 3594 return (SET_ERROR(EINVAL)); 3595 3596 3597 /* Verify that the keys (bookmarks) are unique */ 3598 for (nvpair_t *pair2 = nvlist_next_nvpair(innvl, pair); 3599 pair2 != NULL; pair2 = nvlist_next_nvpair(innvl, pair2)) { 3600 if (strcmp(nvpair_name(pair), nvpair_name(pair2)) == 0) 3601 return (SET_ERROR(EINVAL)); 3602 } 3603 } 3604 3605 return (dsl_bookmark_create(innvl, outnvl)); 3606} 3607 3608/* 3609 * innvl: { 3610 * property 1, property 2, ... 3611 * } 3612 * 3613 * outnvl: { 3614 * bookmark name 1 -> { property 1, property 2, ... }, 3615 * bookmark name 2 -> { property 1, property 2, ... } 3616 * } 3617 * 3618 */ 3619static int 3620zfs_ioc_get_bookmarks(const char *fsname, nvlist_t *innvl, nvlist_t *outnvl) 3621{ 3622 return (dsl_get_bookmarks(fsname, innvl, outnvl)); 3623} 3624 3625/* 3626 * innvl: { 3627 * bookmark name 1, bookmark name 2 3628 * } 3629 * 3630 * outnvl: bookmark -> error code (int32) 3631 * 3632 */ 3633static int 3634zfs_ioc_destroy_bookmarks(const char *poolname, nvlist_t *innvl, 3635 nvlist_t *outnvl) 3636{ 3637 int error, poollen; 3638 3639 poollen = strlen(poolname); 3640 for (nvpair_t *pair = nvlist_next_nvpair(innvl, NULL); 3641 pair != NULL; pair = nvlist_next_nvpair(innvl, pair)) { 3642 const char *name = nvpair_name(pair); 3643 const char *cp = strchr(name, '#'); 3644 3645 /* 3646 * The bookmark name must contain an #, and the part after it 3647 * must contain only valid characters. 3648 */ 3649 if (cp == NULL || 3650 zfs_component_namecheck(cp + 1, NULL, NULL) != 0) 3651 return (SET_ERROR(EINVAL)); 3652 3653 /* 3654 * The bookmark must be in the specified pool. 3655 */ 3656 if (strncmp(name, poolname, poollen) != 0 || 3657 (name[poollen] != '/' && name[poollen] != '#')) 3658 return (SET_ERROR(EXDEV)); 3659 } 3660 3661 error = dsl_bookmark_destroy(innvl, outnvl); 3662 return (error); 3663} 3664 3665/* 3666 * inputs: 3667 * zc_name name of dataset to destroy 3668 * zc_objset_type type of objset 3669 * zc_defer_destroy mark for deferred destroy 3670 * 3671 * outputs: none 3672 */ 3673static int 3674zfs_ioc_destroy(zfs_cmd_t *zc) 3675{ 3676 int err; 3677 3678 if (zc->zc_objset_type == DMU_OST_ZFS) { 3679 err = zfs_unmount_snap(zc->zc_name); 3680 if (err != 0) 3681 return (err); 3682 } 3683 3684 if (strchr(zc->zc_name, '@')) 3685 err = dsl_destroy_snapshot(zc->zc_name, zc->zc_defer_destroy); 3686 else 3687 err = dsl_destroy_head(zc->zc_name); 3688 if (zc->zc_objset_type == DMU_OST_ZVOL && err == 0) 3689#ifdef __FreeBSD__ 3690 zvol_remove_minors(zc->zc_name); 3691#else 3692 (void) zvol_remove_minor(zc->zc_name); 3693#endif 3694 return (err); 3695} 3696 3697/* 3698 * fsname is name of dataset to rollback (to most recent snapshot) 3699 * 3700 * innvl is not used. 3701 * 3702 * outnvl: "target" -> name of most recent snapshot 3703 * } 3704 */ 3705/* ARGSUSED */ 3706static int 3707zfs_ioc_rollback(const char *fsname, nvlist_t *args, nvlist_t *outnvl) 3708{ 3709 zfsvfs_t *zfsvfs; 3710 int error; 3711 3712 if (getzfsvfs(fsname, &zfsvfs) == 0) { 3713 error = zfs_suspend_fs(zfsvfs); 3714 if (error == 0) { 3715 int resume_err; 3716 3717 error = dsl_dataset_rollback(fsname, zfsvfs, outnvl); 3718 resume_err = zfs_resume_fs(zfsvfs, fsname); 3719 error = error ? error : resume_err; 3720 } 3721 VFS_RELE(zfsvfs->z_vfs); 3722 } else { 3723 error = dsl_dataset_rollback(fsname, NULL, outnvl); 3724 } 3725 return (error); 3726} 3727 3728static int 3729recursive_unmount(const char *fsname, void *arg) 3730{ 3731 const char *snapname = arg; 3732 char fullname[MAXNAMELEN]; 3733 3734 (void) snprintf(fullname, sizeof (fullname), "%s@%s", fsname, snapname); 3735 return (zfs_unmount_snap(fullname)); 3736} 3737 3738/* 3739 * inputs: 3740 * zc_name old name of dataset 3741 * zc_value new name of dataset 3742 * zc_cookie recursive flag (only valid for snapshots) 3743 * 3744 * outputs: none 3745 */ 3746static int 3747zfs_ioc_rename(zfs_cmd_t *zc) 3748{ 3749 boolean_t recursive = zc->zc_cookie & 1; 3750 char *at; 3751 boolean_t allow_mounted = B_TRUE; 3752 3753#ifdef __FreeBSD__ 3754 allow_mounted = (zc->zc_cookie & 2) != 0; 3755#endif 3756 3757 zc->zc_value[sizeof (zc->zc_value) - 1] = '\0'; 3758 if (dataset_namecheck(zc->zc_value, NULL, NULL) != 0 || 3759 strchr(zc->zc_value, '%')) 3760 return (SET_ERROR(EINVAL)); 3761 3762 at = strchr(zc->zc_name, '@'); 3763 if (at != NULL) { 3764 /* snaps must be in same fs */ 3765 int error; 3766 3767 if (strncmp(zc->zc_name, zc->zc_value, at - zc->zc_name + 1)) 3768 return (SET_ERROR(EXDEV)); 3769 *at = '\0'; 3770 if (zc->zc_objset_type == DMU_OST_ZFS && allow_mounted) { 3771 error = dmu_objset_find(zc->zc_name, 3772 recursive_unmount, at + 1, 3773 recursive ? DS_FIND_CHILDREN : 0); 3774 if (error != 0) { 3775 *at = '@'; 3776 return (error); 3777 } 3778 } 3779 error = dsl_dataset_rename_snapshot(zc->zc_name, 3780 at + 1, strchr(zc->zc_value, '@') + 1, recursive); 3781 *at = '@'; 3782 3783 return (error); 3784 } else { 3785#ifdef illumos 3786 if (zc->zc_objset_type == DMU_OST_ZVOL) 3787 (void) zvol_remove_minor(zc->zc_name); 3788#endif 3789 return (dsl_dir_rename(zc->zc_name, zc->zc_value)); 3790 } 3791} 3792 3793static int 3794zfs_check_settable(const char *dsname, nvpair_t *pair, cred_t *cr) 3795{ 3796 const char *propname = nvpair_name(pair); 3797 boolean_t issnap = (strchr(dsname, '@') != NULL); 3798 zfs_prop_t prop = zfs_name_to_prop(propname); 3799 uint64_t intval; 3800 int err; 3801 3802 if (prop == ZPROP_INVAL) { 3803 if (zfs_prop_user(propname)) { 3804 if (err = zfs_secpolicy_write_perms(dsname, 3805 ZFS_DELEG_PERM_USERPROP, cr)) 3806 return (err); 3807 return (0); 3808 } 3809 3810 if (!issnap && zfs_prop_userquota(propname)) { 3811 const char *perm = NULL; 3812 const char *uq_prefix = 3813 zfs_userquota_prop_prefixes[ZFS_PROP_USERQUOTA]; 3814 const char *gq_prefix = 3815 zfs_userquota_prop_prefixes[ZFS_PROP_GROUPQUOTA]; 3816 3817 if (strncmp(propname, uq_prefix, 3818 strlen(uq_prefix)) == 0) { 3819 perm = ZFS_DELEG_PERM_USERQUOTA; 3820 } else if (strncmp(propname, gq_prefix, 3821 strlen(gq_prefix)) == 0) { 3822 perm = ZFS_DELEG_PERM_GROUPQUOTA; 3823 } else { 3824 /* USERUSED and GROUPUSED are read-only */ 3825 return (SET_ERROR(EINVAL)); 3826 } 3827 3828 if (err = zfs_secpolicy_write_perms(dsname, perm, cr)) 3829 return (err); 3830 return (0); 3831 } 3832 3833 return (SET_ERROR(EINVAL)); 3834 } 3835 3836 if (issnap) 3837 return (SET_ERROR(EINVAL)); 3838 3839 if (nvpair_type(pair) == DATA_TYPE_NVLIST) { 3840 /* 3841 * dsl_prop_get_all_impl() returns properties in this 3842 * format. 3843 */ 3844 nvlist_t *attrs; 3845 VERIFY(nvpair_value_nvlist(pair, &attrs) == 0); 3846 VERIFY(nvlist_lookup_nvpair(attrs, ZPROP_VALUE, 3847 &pair) == 0); 3848 } 3849 3850 /* 3851 * Check that this value is valid for this pool version 3852 */ 3853 switch (prop) { 3854 case ZFS_PROP_COMPRESSION: 3855 /* 3856 * If the user specified gzip compression, make sure 3857 * the SPA supports it. We ignore any errors here since 3858 * we'll catch them later. 3859 */ 3860 if (nvpair_value_uint64(pair, &intval) == 0) { 3861 if (intval >= ZIO_COMPRESS_GZIP_1 && 3862 intval <= ZIO_COMPRESS_GZIP_9 && 3863 zfs_earlier_version(dsname, 3864 SPA_VERSION_GZIP_COMPRESSION)) { 3865 return (SET_ERROR(ENOTSUP)); 3866 } 3867 3868 if (intval == ZIO_COMPRESS_ZLE && 3869 zfs_earlier_version(dsname, 3870 SPA_VERSION_ZLE_COMPRESSION)) 3871 return (SET_ERROR(ENOTSUP)); 3872 3873 if (intval == ZIO_COMPRESS_LZ4) { 3874 spa_t *spa; 3875 3876 if ((err = spa_open(dsname, &spa, FTAG)) != 0) 3877 return (err); 3878 3879 if (!spa_feature_is_enabled(spa, 3880 SPA_FEATURE_LZ4_COMPRESS)) { 3881 spa_close(spa, FTAG); 3882 return (SET_ERROR(ENOTSUP)); 3883 } 3884 spa_close(spa, FTAG); 3885 } 3886 3887 /* 3888 * If this is a bootable dataset then 3889 * verify that the compression algorithm 3890 * is supported for booting. We must return 3891 * something other than ENOTSUP since it 3892 * implies a downrev pool version. 3893 */ 3894 if (zfs_is_bootfs(dsname) && 3895 !BOOTFS_COMPRESS_VALID(intval)) { 3896 return (SET_ERROR(ERANGE)); 3897 } 3898 } 3899 break; 3900 3901 case ZFS_PROP_COPIES: 3902 if (zfs_earlier_version(dsname, SPA_VERSION_DITTO_BLOCKS)) 3903 return (SET_ERROR(ENOTSUP)); 3904 break; 3905 3906 case ZFS_PROP_DEDUP: 3907 if (zfs_earlier_version(dsname, SPA_VERSION_DEDUP)) 3908 return (SET_ERROR(ENOTSUP)); 3909 break; 3910 3911 case ZFS_PROP_RECORDSIZE: 3912 /* Record sizes above 128k need the feature to be enabled */ 3913 if (nvpair_value_uint64(pair, &intval) == 0 && 3914 intval > SPA_OLD_MAXBLOCKSIZE) { 3915 spa_t *spa; 3916 3917 /* 3918 * If this is a bootable dataset then 3919 * the we don't allow large (>128K) blocks, 3920 * because GRUB doesn't support them. 3921 */ 3922 if (zfs_is_bootfs(dsname) && 3923 intval > SPA_OLD_MAXBLOCKSIZE) { 3924 return (SET_ERROR(ERANGE)); 3925 } 3926 3927 /* 3928 * We don't allow setting the property above 1MB, 3929 * unless the tunable has been changed. 3930 */ 3931 if (intval > zfs_max_recordsize || 3932 intval > SPA_MAXBLOCKSIZE) 3933 return (SET_ERROR(ERANGE)); 3934 3935 if ((err = spa_open(dsname, &spa, FTAG)) != 0) 3936 return (err); 3937 3938 if (!spa_feature_is_enabled(spa, 3939 SPA_FEATURE_LARGE_BLOCKS)) { 3940 spa_close(spa, FTAG); 3941 return (SET_ERROR(ENOTSUP)); 3942 } 3943 spa_close(spa, FTAG); 3944 } 3945 break; 3946 3947 case ZFS_PROP_SHARESMB: 3948 if (zpl_earlier_version(dsname, ZPL_VERSION_FUID)) 3949 return (SET_ERROR(ENOTSUP)); 3950 break; 3951 3952 case ZFS_PROP_ACLINHERIT: 3953 if (nvpair_type(pair) == DATA_TYPE_UINT64 && 3954 nvpair_value_uint64(pair, &intval) == 0) { 3955 if (intval == ZFS_ACL_PASSTHROUGH_X && 3956 zfs_earlier_version(dsname, 3957 SPA_VERSION_PASSTHROUGH_X)) 3958 return (SET_ERROR(ENOTSUP)); 3959 } 3960 break; 3961 } 3962 3963 return (zfs_secpolicy_setprop(dsname, prop, pair, CRED())); 3964} 3965 3966/* 3967 * Checks for a race condition to make sure we don't increment a feature flag 3968 * multiple times. 3969 */ 3970static int 3971zfs_prop_activate_feature_check(void *arg, dmu_tx_t *tx) 3972{ 3973 spa_t *spa = dmu_tx_pool(tx)->dp_spa; 3974 spa_feature_t *featurep = arg; 3975 3976 if (!spa_feature_is_active(spa, *featurep)) 3977 return (0); 3978 else 3979 return (SET_ERROR(EBUSY)); 3980} 3981 3982/* 3983 * The callback invoked on feature activation in the sync task caused by 3984 * zfs_prop_activate_feature. 3985 */ 3986static void 3987zfs_prop_activate_feature_sync(void *arg, dmu_tx_t *tx) 3988{ 3989 spa_t *spa = dmu_tx_pool(tx)->dp_spa; 3990 spa_feature_t *featurep = arg; 3991 3992 spa_feature_incr(spa, *featurep, tx); 3993} 3994 3995/* 3996 * Activates a feature on a pool in response to a property setting. This 3997 * creates a new sync task which modifies the pool to reflect the feature 3998 * as being active. 3999 */ 4000static int 4001zfs_prop_activate_feature(spa_t *spa, spa_feature_t feature) 4002{ 4003 int err; 4004 4005 /* EBUSY here indicates that the feature is already active */ 4006 err = dsl_sync_task(spa_name(spa), 4007 zfs_prop_activate_feature_check, zfs_prop_activate_feature_sync, 4008 &feature, 2, ZFS_SPACE_CHECK_RESERVED); 4009 4010 if (err != 0 && err != EBUSY) 4011 return (err); 4012 else 4013 return (0); 4014} 4015 4016/* 4017 * Removes properties from the given props list that fail permission checks 4018 * needed to clear them and to restore them in case of a receive error. For each 4019 * property, make sure we have both set and inherit permissions. 4020 * 4021 * Returns the first error encountered if any permission checks fail. If the 4022 * caller provides a non-NULL errlist, it also gives the complete list of names 4023 * of all the properties that failed a permission check along with the 4024 * corresponding error numbers. The caller is responsible for freeing the 4025 * returned errlist. 4026 * 4027 * If every property checks out successfully, zero is returned and the list 4028 * pointed at by errlist is NULL. 4029 */ 4030static int 4031zfs_check_clearable(char *dataset, nvlist_t *props, nvlist_t **errlist) 4032{ 4033 zfs_cmd_t *zc; 4034 nvpair_t *pair, *next_pair; 4035 nvlist_t *errors; 4036 int err, rv = 0; 4037 4038 if (props == NULL) 4039 return (0); 4040 4041 VERIFY(nvlist_alloc(&errors, NV_UNIQUE_NAME, KM_SLEEP) == 0); 4042 4043 zc = kmem_alloc(sizeof (zfs_cmd_t), KM_SLEEP); 4044 (void) strcpy(zc->zc_name, dataset); 4045 pair = nvlist_next_nvpair(props, NULL); 4046 while (pair != NULL) { 4047 next_pair = nvlist_next_nvpair(props, pair); 4048 4049 (void) strcpy(zc->zc_value, nvpair_name(pair)); 4050 if ((err = zfs_check_settable(dataset, pair, CRED())) != 0 || 4051 (err = zfs_secpolicy_inherit_prop(zc, NULL, CRED())) != 0) { 4052 VERIFY(nvlist_remove_nvpair(props, pair) == 0); 4053 VERIFY(nvlist_add_int32(errors, 4054 zc->zc_value, err) == 0); 4055 } 4056 pair = next_pair; 4057 } 4058 kmem_free(zc, sizeof (zfs_cmd_t)); 4059 4060 if ((pair = nvlist_next_nvpair(errors, NULL)) == NULL) { 4061 nvlist_free(errors); 4062 errors = NULL; 4063 } else { 4064 VERIFY(nvpair_value_int32(pair, &rv) == 0); 4065 } 4066 4067 if (errlist == NULL) 4068 nvlist_free(errors); 4069 else 4070 *errlist = errors; 4071 4072 return (rv); 4073} 4074 4075static boolean_t 4076propval_equals(nvpair_t *p1, nvpair_t *p2) 4077{ 4078 if (nvpair_type(p1) == DATA_TYPE_NVLIST) { 4079 /* dsl_prop_get_all_impl() format */ 4080 nvlist_t *attrs; 4081 VERIFY(nvpair_value_nvlist(p1, &attrs) == 0); 4082 VERIFY(nvlist_lookup_nvpair(attrs, ZPROP_VALUE, 4083 &p1) == 0); 4084 } 4085 4086 if (nvpair_type(p2) == DATA_TYPE_NVLIST) { 4087 nvlist_t *attrs; 4088 VERIFY(nvpair_value_nvlist(p2, &attrs) == 0); 4089 VERIFY(nvlist_lookup_nvpair(attrs, ZPROP_VALUE, 4090 &p2) == 0); 4091 } 4092 4093 if (nvpair_type(p1) != nvpair_type(p2)) 4094 return (B_FALSE); 4095 4096 if (nvpair_type(p1) == DATA_TYPE_STRING) { 4097 char *valstr1, *valstr2; 4098 4099 VERIFY(nvpair_value_string(p1, (char **)&valstr1) == 0); 4100 VERIFY(nvpair_value_string(p2, (char **)&valstr2) == 0); 4101 return (strcmp(valstr1, valstr2) == 0); 4102 } else { 4103 uint64_t intval1, intval2; 4104 4105 VERIFY(nvpair_value_uint64(p1, &intval1) == 0); 4106 VERIFY(nvpair_value_uint64(p2, &intval2) == 0); 4107 return (intval1 == intval2); 4108 } 4109} 4110 4111/* 4112 * Remove properties from props if they are not going to change (as determined 4113 * by comparison with origprops). Remove them from origprops as well, since we 4114 * do not need to clear or restore properties that won't change. 4115 */ 4116static void 4117props_reduce(nvlist_t *props, nvlist_t *origprops) 4118{ 4119 nvpair_t *pair, *next_pair; 4120 4121 if (origprops == NULL) 4122 return; /* all props need to be received */ 4123 4124 pair = nvlist_next_nvpair(props, NULL); 4125 while (pair != NULL) { 4126 const char *propname = nvpair_name(pair); 4127 nvpair_t *match; 4128 4129 next_pair = nvlist_next_nvpair(props, pair); 4130 4131 if ((nvlist_lookup_nvpair(origprops, propname, 4132 &match) != 0) || !propval_equals(pair, match)) 4133 goto next; /* need to set received value */ 4134 4135 /* don't clear the existing received value */ 4136 (void) nvlist_remove_nvpair(origprops, match); 4137 /* don't bother receiving the property */ 4138 (void) nvlist_remove_nvpair(props, pair); 4139next: 4140 pair = next_pair; 4141 } 4142} 4143 4144#ifdef DEBUG 4145static boolean_t zfs_ioc_recv_inject_err; 4146#endif 4147 4148/* 4149 * inputs: 4150 * zc_name name of containing filesystem 4151 * zc_nvlist_src{_size} nvlist of properties to apply 4152 * zc_value name of snapshot to create 4153 * zc_string name of clone origin (if DRR_FLAG_CLONE) 4154 * zc_cookie file descriptor to recv from 4155 * zc_begin_record the BEGIN record of the stream (not byteswapped) 4156 * zc_guid force flag 4157 * zc_cleanup_fd cleanup-on-exit file descriptor 4158 * zc_action_handle handle for this guid/ds mapping (or zero on first call) 4159 * 4160 * outputs: 4161 * zc_cookie number of bytes read 4162 * zc_nvlist_dst{_size} error for each unapplied received property 4163 * zc_obj zprop_errflags_t 4164 * zc_action_handle handle for this guid/ds mapping 4165 */ 4166static int 4167zfs_ioc_recv(zfs_cmd_t *zc) 4168{ 4169 file_t *fp; 4170 dmu_recv_cookie_t drc; 4171 boolean_t force = (boolean_t)zc->zc_guid; 4172 int fd; 4173 int error = 0; 4174 int props_error = 0; 4175 nvlist_t *errors; 4176 offset_t off; 4177 nvlist_t *props = NULL; /* sent properties */ 4178 nvlist_t *origprops = NULL; /* existing properties */ 4179 char *origin = NULL; 4180 char *tosnap; 4181 char tofs[ZFS_MAXNAMELEN]; 4182 cap_rights_t rights; 4183 boolean_t first_recvd_props = B_FALSE; 4184 4185 if (dataset_namecheck(zc->zc_value, NULL, NULL) != 0 || 4186 strchr(zc->zc_value, '@') == NULL || 4187 strchr(zc->zc_value, '%')) 4188 return (SET_ERROR(EINVAL)); 4189 4190 (void) strcpy(tofs, zc->zc_value); 4191 tosnap = strchr(tofs, '@'); 4192 *tosnap++ = '\0'; 4193 4194 if (zc->zc_nvlist_src != 0 && 4195 (error = get_nvlist(zc->zc_nvlist_src, zc->zc_nvlist_src_size, 4196 zc->zc_iflags, &props)) != 0) 4197 return (error); 4198 4199 fd = zc->zc_cookie; 4200#ifdef illumos 4201 fp = getf(fd); 4202#else 4203 fget_read(curthread, fd, cap_rights_init(&rights, CAP_PREAD), &fp); 4204#endif 4205 if (fp == NULL) { 4206 nvlist_free(props); 4207 return (SET_ERROR(EBADF)); 4208 } 4209 4210 VERIFY(nvlist_alloc(&errors, NV_UNIQUE_NAME, KM_SLEEP) == 0); 4211 4212 if (zc->zc_string[0]) 4213 origin = zc->zc_string; 4214 4215 error = dmu_recv_begin(tofs, tosnap, 4216 &zc->zc_begin_record, force, origin, &drc); 4217 if (error != 0) 4218 goto out; 4219 4220 /* 4221 * Set properties before we receive the stream so that they are applied 4222 * to the new data. Note that we must call dmu_recv_stream() if 4223 * dmu_recv_begin() succeeds. 4224 */ 4225 if (props != NULL && !drc.drc_newfs) { 4226 if (spa_version(dsl_dataset_get_spa(drc.drc_ds)) >= 4227 SPA_VERSION_RECVD_PROPS && 4228 !dsl_prop_get_hasrecvd(tofs)) 4229 first_recvd_props = B_TRUE; 4230 4231 /* 4232 * If new received properties are supplied, they are to 4233 * completely replace the existing received properties, so stash 4234 * away the existing ones. 4235 */ 4236 if (dsl_prop_get_received(tofs, &origprops) == 0) { 4237 nvlist_t *errlist = NULL; 4238 /* 4239 * Don't bother writing a property if its value won't 4240 * change (and avoid the unnecessary security checks). 4241 * 4242 * The first receive after SPA_VERSION_RECVD_PROPS is a 4243 * special case where we blow away all local properties 4244 * regardless. 4245 */ 4246 if (!first_recvd_props) 4247 props_reduce(props, origprops); 4248 if (zfs_check_clearable(tofs, origprops, &errlist) != 0) 4249 (void) nvlist_merge(errors, errlist, 0); 4250 nvlist_free(errlist); 4251 4252 if (clear_received_props(tofs, origprops, 4253 first_recvd_props ? NULL : props) != 0) 4254 zc->zc_obj |= ZPROP_ERR_NOCLEAR; 4255 } else { 4256 zc->zc_obj |= ZPROP_ERR_NOCLEAR; 4257 } 4258 } 4259 4260 if (props != NULL) { 4261 props_error = dsl_prop_set_hasrecvd(tofs); 4262 4263 if (props_error == 0) { 4264 (void) zfs_set_prop_nvlist(tofs, ZPROP_SRC_RECEIVED, 4265 props, errors); 4266 } 4267 } 4268 4269 if (zc->zc_nvlist_dst_size != 0 && 4270 (nvlist_smush(errors, zc->zc_nvlist_dst_size) != 0 || 4271 put_nvlist(zc, errors) != 0)) { 4272 /* 4273 * Caller made zc->zc_nvlist_dst less than the minimum expected 4274 * size or supplied an invalid address. 4275 */ 4276 props_error = SET_ERROR(EINVAL); 4277 } 4278 4279 off = fp->f_offset; 4280 error = dmu_recv_stream(&drc, fp, &off, zc->zc_cleanup_fd, 4281 &zc->zc_action_handle); 4282 4283 if (error == 0) { 4284 zfsvfs_t *zfsvfs = NULL; 4285 4286 if (getzfsvfs(tofs, &zfsvfs) == 0) { 4287 /* online recv */ 4288 int end_err; 4289 4290 error = zfs_suspend_fs(zfsvfs); 4291 /* 4292 * If the suspend fails, then the recv_end will 4293 * likely also fail, and clean up after itself. 4294 */ 4295 end_err = dmu_recv_end(&drc, zfsvfs); 4296 if (error == 0) 4297 error = zfs_resume_fs(zfsvfs, tofs); 4298 error = error ? error : end_err; 4299 VFS_RELE(zfsvfs->z_vfs); 4300 } else { 4301 error = dmu_recv_end(&drc, NULL); 4302 } 4303 } 4304 4305 zc->zc_cookie = off - fp->f_offset; 4306 if (off >= 0 && off <= MAXOFFSET_T) 4307 fp->f_offset = off; 4308 4309#ifdef DEBUG 4310 if (zfs_ioc_recv_inject_err) { 4311 zfs_ioc_recv_inject_err = B_FALSE; 4312 error = 1; 4313 } 4314#endif 4315 4316#ifdef __FreeBSD__ 4317 if (error == 0) 4318 zvol_create_minors(tofs); 4319#endif 4320 4321 /* 4322 * On error, restore the original props. 4323 */ 4324 if (error != 0 && props != NULL && !drc.drc_newfs) { 4325 if (clear_received_props(tofs, props, NULL) != 0) { 4326 /* 4327 * We failed to clear the received properties. 4328 * Since we may have left a $recvd value on the 4329 * system, we can't clear the $hasrecvd flag. 4330 */ 4331 zc->zc_obj |= ZPROP_ERR_NORESTORE; 4332 } else if (first_recvd_props) { 4333 dsl_prop_unset_hasrecvd(tofs); 4334 } 4335 4336 if (origprops == NULL && !drc.drc_newfs) { 4337 /* We failed to stash the original properties. */ 4338 zc->zc_obj |= ZPROP_ERR_NORESTORE; 4339 } 4340 4341 /* 4342 * dsl_props_set() will not convert RECEIVED to LOCAL on or 4343 * after SPA_VERSION_RECVD_PROPS, so we need to specify LOCAL 4344 * explictly if we're restoring local properties cleared in the 4345 * first new-style receive. 4346 */ 4347 if (origprops != NULL && 4348 zfs_set_prop_nvlist(tofs, (first_recvd_props ? 4349 ZPROP_SRC_LOCAL : ZPROP_SRC_RECEIVED), 4350 origprops, NULL) != 0) { 4351 /* 4352 * We stashed the original properties but failed to 4353 * restore them. 4354 */ 4355 zc->zc_obj |= ZPROP_ERR_NORESTORE; 4356 } 4357 } 4358out: 4359 nvlist_free(props); 4360 nvlist_free(origprops); 4361 nvlist_free(errors); 4362 releasef(fd); 4363 4364 if (error == 0) 4365 error = props_error; 4366 4367 return (error); 4368} 4369 4370/* 4371 * inputs: 4372 * zc_name name of snapshot to send 4373 * zc_cookie file descriptor to send stream to 4374 * zc_obj fromorigin flag (mutually exclusive with zc_fromobj) 4375 * zc_sendobj objsetid of snapshot to send 4376 * zc_fromobj objsetid of incremental fromsnap (may be zero) 4377 * zc_guid if set, estimate size of stream only. zc_cookie is ignored. 4378 * output size in zc_objset_type. 4379 * zc_flags lzc_send_flags 4380 * 4381 * outputs: 4382 * zc_objset_type estimated size, if zc_guid is set 4383 */ 4384static int 4385zfs_ioc_send(zfs_cmd_t *zc) 4386{ 4387 int error; 4388 offset_t off; 4389 boolean_t estimate = (zc->zc_guid != 0); 4390 boolean_t embedok = (zc->zc_flags & 0x1); 4391 boolean_t large_block_ok = (zc->zc_flags & 0x2); 4392 4393 if (zc->zc_obj != 0) { 4394 dsl_pool_t *dp; 4395 dsl_dataset_t *tosnap; 4396 4397 error = dsl_pool_hold(zc->zc_name, FTAG, &dp); 4398 if (error != 0) 4399 return (error); 4400 4401 error = dsl_dataset_hold_obj(dp, zc->zc_sendobj, FTAG, &tosnap); 4402 if (error != 0) { 4403 dsl_pool_rele(dp, FTAG); 4404 return (error); 4405 } 4406 4407 if (dsl_dir_is_clone(tosnap->ds_dir)) 4408 zc->zc_fromobj = 4409 dsl_dir_phys(tosnap->ds_dir)->dd_origin_obj; 4410 dsl_dataset_rele(tosnap, FTAG); 4411 dsl_pool_rele(dp, FTAG); 4412 } 4413 4414 if (estimate) { 4415 dsl_pool_t *dp; 4416 dsl_dataset_t *tosnap; 4417 dsl_dataset_t *fromsnap = NULL; 4418 4419 error = dsl_pool_hold(zc->zc_name, FTAG, &dp); 4420 if (error != 0) 4421 return (error); 4422 4423 error = dsl_dataset_hold_obj(dp, zc->zc_sendobj, FTAG, &tosnap); 4424 if (error != 0) { 4425 dsl_pool_rele(dp, FTAG); 4426 return (error); 4427 } 4428 4429 if (zc->zc_fromobj != 0) { 4430 error = dsl_dataset_hold_obj(dp, zc->zc_fromobj, 4431 FTAG, &fromsnap); 4432 if (error != 0) { 4433 dsl_dataset_rele(tosnap, FTAG); 4434 dsl_pool_rele(dp, FTAG); 4435 return (error); 4436 } 4437 } 4438 4439 error = dmu_send_estimate(tosnap, fromsnap, 4440 &zc->zc_objset_type); 4441 4442 if (fromsnap != NULL) 4443 dsl_dataset_rele(fromsnap, FTAG); 4444 dsl_dataset_rele(tosnap, FTAG); 4445 dsl_pool_rele(dp, FTAG); 4446 } else { 4447 file_t *fp; 4448 cap_rights_t rights; 4449 4450#ifdef illumos 4451 fp = getf(zc->zc_cookie); 4452#else 4453 fget_write(curthread, zc->zc_cookie, 4454 cap_rights_init(&rights, CAP_WRITE), &fp); 4455#endif 4456 if (fp == NULL) 4457 return (SET_ERROR(EBADF)); 4458 4459 off = fp->f_offset; 4460 error = dmu_send_obj(zc->zc_name, zc->zc_sendobj, 4461 zc->zc_fromobj, embedok, large_block_ok, 4462#ifdef illumos 4463 zc->zc_cookie, fp->f_vnode, &off); 4464#else 4465 zc->zc_cookie, fp, &off); 4466#endif 4467 4468 if (off >= 0 && off <= MAXOFFSET_T) 4469 fp->f_offset = off; 4470 releasef(zc->zc_cookie); 4471 } 4472 return (error); 4473} 4474 4475/* 4476 * inputs: 4477 * zc_name name of snapshot on which to report progress 4478 * zc_cookie file descriptor of send stream 4479 * 4480 * outputs: 4481 * zc_cookie number of bytes written in send stream thus far 4482 */ 4483static int 4484zfs_ioc_send_progress(zfs_cmd_t *zc) 4485{ 4486 dsl_pool_t *dp; 4487 dsl_dataset_t *ds; 4488 dmu_sendarg_t *dsp = NULL; 4489 int error; 4490 4491 error = dsl_pool_hold(zc->zc_name, FTAG, &dp); 4492 if (error != 0) 4493 return (error); 4494 4495 error = dsl_dataset_hold(dp, zc->zc_name, FTAG, &ds); 4496 if (error != 0) { 4497 dsl_pool_rele(dp, FTAG); 4498 return (error); 4499 } 4500 4501 mutex_enter(&ds->ds_sendstream_lock); 4502 4503 /* 4504 * Iterate over all the send streams currently active on this dataset. 4505 * If there's one which matches the specified file descriptor _and_ the 4506 * stream was started by the current process, return the progress of 4507 * that stream. 4508 */ 4509 for (dsp = list_head(&ds->ds_sendstreams); dsp != NULL; 4510 dsp = list_next(&ds->ds_sendstreams, dsp)) { 4511 if (dsp->dsa_outfd == zc->zc_cookie && 4512 dsp->dsa_proc == curproc) 4513 break; 4514 } 4515 4516 if (dsp != NULL) 4517 zc->zc_cookie = *(dsp->dsa_off); 4518 else 4519 error = SET_ERROR(ENOENT); 4520 4521 mutex_exit(&ds->ds_sendstream_lock); 4522 dsl_dataset_rele(ds, FTAG); 4523 dsl_pool_rele(dp, FTAG); 4524 return (error); 4525} 4526 4527static int 4528zfs_ioc_inject_fault(zfs_cmd_t *zc) 4529{ 4530 int id, error; 4531 4532 error = zio_inject_fault(zc->zc_name, (int)zc->zc_guid, &id, 4533 &zc->zc_inject_record); 4534 4535 if (error == 0) 4536 zc->zc_guid = (uint64_t)id; 4537 4538 return (error); 4539} 4540 4541static int 4542zfs_ioc_clear_fault(zfs_cmd_t *zc) 4543{ 4544 return (zio_clear_fault((int)zc->zc_guid)); 4545} 4546 4547static int 4548zfs_ioc_inject_list_next(zfs_cmd_t *zc) 4549{ 4550 int id = (int)zc->zc_guid; 4551 int error; 4552 4553 error = zio_inject_list_next(&id, zc->zc_name, sizeof (zc->zc_name), 4554 &zc->zc_inject_record); 4555 4556 zc->zc_guid = id; 4557 4558 return (error); 4559} 4560 4561static int 4562zfs_ioc_error_log(zfs_cmd_t *zc) 4563{ 4564 spa_t *spa; 4565 int error; 4566 size_t count = (size_t)zc->zc_nvlist_dst_size; 4567 4568 if ((error = spa_open(zc->zc_name, &spa, FTAG)) != 0) 4569 return (error); 4570 4571 error = spa_get_errlog(spa, (void *)(uintptr_t)zc->zc_nvlist_dst, 4572 &count); 4573 if (error == 0) 4574 zc->zc_nvlist_dst_size = count; 4575 else 4576 zc->zc_nvlist_dst_size = spa_get_errlog_size(spa); 4577 4578 spa_close(spa, FTAG); 4579 4580 return (error); 4581} 4582 4583static int 4584zfs_ioc_clear(zfs_cmd_t *zc) 4585{ 4586 spa_t *spa; 4587 vdev_t *vd; 4588 int error; 4589 4590 /* 4591 * On zpool clear we also fix up missing slogs 4592 */ 4593 mutex_enter(&spa_namespace_lock); 4594 spa = spa_lookup(zc->zc_name); 4595 if (spa == NULL) { 4596 mutex_exit(&spa_namespace_lock); 4597 return (SET_ERROR(EIO)); 4598 } 4599 if (spa_get_log_state(spa) == SPA_LOG_MISSING) { 4600 /* we need to let spa_open/spa_load clear the chains */ 4601 spa_set_log_state(spa, SPA_LOG_CLEAR); 4602 } 4603 spa->spa_last_open_failed = 0; 4604 mutex_exit(&spa_namespace_lock); 4605 4606 if (zc->zc_cookie & ZPOOL_NO_REWIND) { 4607 error = spa_open(zc->zc_name, &spa, FTAG); 4608 } else { 4609 nvlist_t *policy; 4610 nvlist_t *config = NULL; 4611 4612 if (zc->zc_nvlist_src == 0) 4613 return (SET_ERROR(EINVAL)); 4614 4615 if ((error = get_nvlist(zc->zc_nvlist_src, 4616 zc->zc_nvlist_src_size, zc->zc_iflags, &policy)) == 0) { 4617 error = spa_open_rewind(zc->zc_name, &spa, FTAG, 4618 policy, &config); 4619 if (config != NULL) { 4620 int err; 4621 4622 if ((err = put_nvlist(zc, config)) != 0) 4623 error = err; 4624 nvlist_free(config); 4625 } 4626 nvlist_free(policy); 4627 } 4628 } 4629 4630 if (error != 0) 4631 return (error); 4632 4633 spa_vdev_state_enter(spa, SCL_NONE); 4634 4635 if (zc->zc_guid == 0) { 4636 vd = NULL; 4637 } else { 4638 vd = spa_lookup_by_guid(spa, zc->zc_guid, B_TRUE); 4639 if (vd == NULL) { 4640 (void) spa_vdev_state_exit(spa, NULL, ENODEV); 4641 spa_close(spa, FTAG); 4642 return (SET_ERROR(ENODEV)); 4643 } 4644 } 4645 4646 vdev_clear(spa, vd); 4647 4648 (void) spa_vdev_state_exit(spa, NULL, 0); 4649 4650 /* 4651 * Resume any suspended I/Os. 4652 */ 4653 if (zio_resume(spa) != 0) 4654 error = SET_ERROR(EIO); 4655 4656 spa_close(spa, FTAG); 4657 4658 return (error); 4659} 4660 4661static int 4662zfs_ioc_pool_reopen(zfs_cmd_t *zc) 4663{ 4664 spa_t *spa; 4665 int error; 4666 4667 error = spa_open(zc->zc_name, &spa, FTAG); 4668 if (error != 0) 4669 return (error); 4670 4671 spa_vdev_state_enter(spa, SCL_NONE); 4672 4673 /* 4674 * If a resilver is already in progress then set the 4675 * spa_scrub_reopen flag to B_TRUE so that we don't restart 4676 * the scan as a side effect of the reopen. Otherwise, let 4677 * vdev_open() decided if a resilver is required. 4678 */ 4679 spa->spa_scrub_reopen = dsl_scan_resilvering(spa->spa_dsl_pool); 4680 vdev_reopen(spa->spa_root_vdev); 4681 spa->spa_scrub_reopen = B_FALSE; 4682 4683 (void) spa_vdev_state_exit(spa, NULL, 0); 4684 spa_close(spa, FTAG); 4685 return (0); 4686} 4687/* 4688 * inputs: 4689 * zc_name name of filesystem 4690 * zc_value name of origin snapshot 4691 * 4692 * outputs: 4693 * zc_string name of conflicting snapshot, if there is one 4694 */ 4695static int 4696zfs_ioc_promote(zfs_cmd_t *zc) 4697{ 4698 char *cp; 4699 4700 /* 4701 * We don't need to unmount *all* the origin fs's snapshots, but 4702 * it's easier. 4703 */ 4704 cp = strchr(zc->zc_value, '@'); 4705 if (cp) 4706 *cp = '\0'; 4707 (void) dmu_objset_find(zc->zc_value, 4708 zfs_unmount_snap_cb, NULL, DS_FIND_SNAPSHOTS); 4709 return (dsl_dataset_promote(zc->zc_name, zc->zc_string)); 4710} 4711 4712/* 4713 * Retrieve a single {user|group}{used|quota}@... property. 4714 * 4715 * inputs: 4716 * zc_name name of filesystem 4717 * zc_objset_type zfs_userquota_prop_t 4718 * zc_value domain name (eg. "S-1-234-567-89") 4719 * zc_guid RID/UID/GID 4720 * 4721 * outputs: 4722 * zc_cookie property value 4723 */ 4724static int 4725zfs_ioc_userspace_one(zfs_cmd_t *zc) 4726{ 4727 zfsvfs_t *zfsvfs; 4728 int error; 4729 4730 if (zc->zc_objset_type >= ZFS_NUM_USERQUOTA_PROPS) 4731 return (SET_ERROR(EINVAL)); 4732 4733 error = zfsvfs_hold(zc->zc_name, FTAG, &zfsvfs, B_FALSE); 4734 if (error != 0) 4735 return (error); 4736 4737 error = zfs_userspace_one(zfsvfs, 4738 zc->zc_objset_type, zc->zc_value, zc->zc_guid, &zc->zc_cookie); 4739 zfsvfs_rele(zfsvfs, FTAG); 4740 4741 return (error); 4742} 4743 4744/* 4745 * inputs: 4746 * zc_name name of filesystem 4747 * zc_cookie zap cursor 4748 * zc_objset_type zfs_userquota_prop_t 4749 * zc_nvlist_dst[_size] buffer to fill (not really an nvlist) 4750 * 4751 * outputs: 4752 * zc_nvlist_dst[_size] data buffer (array of zfs_useracct_t) 4753 * zc_cookie zap cursor 4754 */ 4755static int 4756zfs_ioc_userspace_many(zfs_cmd_t *zc) 4757{ 4758 zfsvfs_t *zfsvfs; 4759 int bufsize = zc->zc_nvlist_dst_size; 4760 4761 if (bufsize <= 0) 4762 return (SET_ERROR(ENOMEM)); 4763 4764 int error = zfsvfs_hold(zc->zc_name, FTAG, &zfsvfs, B_FALSE); 4765 if (error != 0) 4766 return (error); 4767 4768 void *buf = kmem_alloc(bufsize, KM_SLEEP); 4769 4770 error = zfs_userspace_many(zfsvfs, zc->zc_objset_type, &zc->zc_cookie, 4771 buf, &zc->zc_nvlist_dst_size); 4772 4773 if (error == 0) { 4774 error = ddi_copyout(buf, 4775 (void *)(uintptr_t)zc->zc_nvlist_dst, 4776 zc->zc_nvlist_dst_size, zc->zc_iflags); 4777 } 4778 kmem_free(buf, bufsize); 4779 zfsvfs_rele(zfsvfs, FTAG); 4780 4781 return (error); 4782} 4783 4784/* 4785 * inputs: 4786 * zc_name name of filesystem 4787 * 4788 * outputs: 4789 * none 4790 */ 4791static int 4792zfs_ioc_userspace_upgrade(zfs_cmd_t *zc) 4793{ 4794 objset_t *os; 4795 int error = 0; 4796 zfsvfs_t *zfsvfs; 4797 4798 if (getzfsvfs(zc->zc_name, &zfsvfs) == 0) { 4799 if (!dmu_objset_userused_enabled(zfsvfs->z_os)) { 4800 /* 4801 * If userused is not enabled, it may be because the 4802 * objset needs to be closed & reopened (to grow the 4803 * objset_phys_t). Suspend/resume the fs will do that. 4804 */ 4805 error = zfs_suspend_fs(zfsvfs); 4806 if (error == 0) { 4807 dmu_objset_refresh_ownership(zfsvfs->z_os, 4808 zfsvfs); 4809 error = zfs_resume_fs(zfsvfs, zc->zc_name); 4810 } 4811 } 4812 if (error == 0) 4813 error = dmu_objset_userspace_upgrade(zfsvfs->z_os); 4814 VFS_RELE(zfsvfs->z_vfs); 4815 } else { 4816 /* XXX kind of reading contents without owning */ 4817 error = dmu_objset_hold(zc->zc_name, FTAG, &os); 4818 if (error != 0) 4819 return (error); 4820 4821 error = dmu_objset_userspace_upgrade(os); 4822 dmu_objset_rele(os, FTAG); 4823 } 4824 4825 return (error); 4826} 4827 4828#ifdef illumos 4829/* 4830 * We don't want to have a hard dependency 4831 * against some special symbols in sharefs 4832 * nfs, and smbsrv. Determine them if needed when 4833 * the first file system is shared. 4834 * Neither sharefs, nfs or smbsrv are unloadable modules. 4835 */ 4836int (*znfsexport_fs)(void *arg); 4837int (*zshare_fs)(enum sharefs_sys_op, share_t *, uint32_t); 4838int (*zsmbexport_fs)(void *arg, boolean_t add_share); 4839 4840int zfs_nfsshare_inited; 4841int zfs_smbshare_inited; 4842 4843ddi_modhandle_t nfs_mod; 4844ddi_modhandle_t sharefs_mod; 4845ddi_modhandle_t smbsrv_mod; 4846#endif /* illumos */ 4847kmutex_t zfs_share_lock; 4848 4849#ifdef illumos 4850static int 4851zfs_init_sharefs() 4852{ 4853 int error; 4854 4855 ASSERT(MUTEX_HELD(&zfs_share_lock)); 4856 /* Both NFS and SMB shares also require sharetab support. */ 4857 if (sharefs_mod == NULL && ((sharefs_mod = 4858 ddi_modopen("fs/sharefs", 4859 KRTLD_MODE_FIRST, &error)) == NULL)) { 4860 return (SET_ERROR(ENOSYS)); 4861 } 4862 if (zshare_fs == NULL && ((zshare_fs = 4863 (int (*)(enum sharefs_sys_op, share_t *, uint32_t)) 4864 ddi_modsym(sharefs_mod, "sharefs_impl", &error)) == NULL)) { 4865 return (SET_ERROR(ENOSYS)); 4866 } 4867 return (0); 4868} 4869#endif /* illumos */ 4870 4871static int 4872zfs_ioc_share(zfs_cmd_t *zc) 4873{ 4874#ifdef illumos 4875 int error; 4876 int opcode; 4877 4878 switch (zc->zc_share.z_sharetype) { 4879 case ZFS_SHARE_NFS: 4880 case ZFS_UNSHARE_NFS: 4881 if (zfs_nfsshare_inited == 0) { 4882 mutex_enter(&zfs_share_lock); 4883 if (nfs_mod == NULL && ((nfs_mod = ddi_modopen("fs/nfs", 4884 KRTLD_MODE_FIRST, &error)) == NULL)) { 4885 mutex_exit(&zfs_share_lock); 4886 return (SET_ERROR(ENOSYS)); 4887 } 4888 if (znfsexport_fs == NULL && 4889 ((znfsexport_fs = (int (*)(void *)) 4890 ddi_modsym(nfs_mod, 4891 "nfs_export", &error)) == NULL)) { 4892 mutex_exit(&zfs_share_lock); 4893 return (SET_ERROR(ENOSYS)); 4894 } 4895 error = zfs_init_sharefs(); 4896 if (error != 0) { 4897 mutex_exit(&zfs_share_lock); 4898 return (SET_ERROR(ENOSYS)); 4899 } 4900 zfs_nfsshare_inited = 1; 4901 mutex_exit(&zfs_share_lock); 4902 } 4903 break; 4904 case ZFS_SHARE_SMB: 4905 case ZFS_UNSHARE_SMB: 4906 if (zfs_smbshare_inited == 0) { 4907 mutex_enter(&zfs_share_lock); 4908 if (smbsrv_mod == NULL && ((smbsrv_mod = 4909 ddi_modopen("drv/smbsrv", 4910 KRTLD_MODE_FIRST, &error)) == NULL)) { 4911 mutex_exit(&zfs_share_lock); 4912 return (SET_ERROR(ENOSYS)); 4913 } 4914 if (zsmbexport_fs == NULL && ((zsmbexport_fs = 4915 (int (*)(void *, boolean_t))ddi_modsym(smbsrv_mod, 4916 "smb_server_share", &error)) == NULL)) { 4917 mutex_exit(&zfs_share_lock); 4918 return (SET_ERROR(ENOSYS)); 4919 } 4920 error = zfs_init_sharefs(); 4921 if (error != 0) { 4922 mutex_exit(&zfs_share_lock); 4923 return (SET_ERROR(ENOSYS)); 4924 } 4925 zfs_smbshare_inited = 1; 4926 mutex_exit(&zfs_share_lock); 4927 } 4928 break; 4929 default: 4930 return (SET_ERROR(EINVAL)); 4931 } 4932 4933 switch (zc->zc_share.z_sharetype) { 4934 case ZFS_SHARE_NFS: 4935 case ZFS_UNSHARE_NFS: 4936 if (error = 4937 znfsexport_fs((void *) 4938 (uintptr_t)zc->zc_share.z_exportdata)) 4939 return (error); 4940 break; 4941 case ZFS_SHARE_SMB: 4942 case ZFS_UNSHARE_SMB: 4943 if (error = zsmbexport_fs((void *) 4944 (uintptr_t)zc->zc_share.z_exportdata, 4945 zc->zc_share.z_sharetype == ZFS_SHARE_SMB ? 4946 B_TRUE: B_FALSE)) { 4947 return (error); 4948 } 4949 break; 4950 } 4951 4952 opcode = (zc->zc_share.z_sharetype == ZFS_SHARE_NFS || 4953 zc->zc_share.z_sharetype == ZFS_SHARE_SMB) ? 4954 SHAREFS_ADD : SHAREFS_REMOVE; 4955 4956 /* 4957 * Add or remove share from sharetab 4958 */ 4959 error = zshare_fs(opcode, 4960 (void *)(uintptr_t)zc->zc_share.z_sharedata, 4961 zc->zc_share.z_sharemax); 4962 4963 return (error); 4964 4965#else /* !illumos */ 4966 return (ENOSYS); 4967#endif /* illumos */ 4968} 4969 4970ace_t full_access[] = { 4971 {(uid_t)-1, ACE_ALL_PERMS, ACE_EVERYONE, 0} 4972}; 4973 4974/* 4975 * inputs: 4976 * zc_name name of containing filesystem 4977 * zc_obj object # beyond which we want next in-use object # 4978 * 4979 * outputs: 4980 * zc_obj next in-use object # 4981 */ 4982static int 4983zfs_ioc_next_obj(zfs_cmd_t *zc) 4984{ 4985 objset_t *os = NULL; 4986 int error; 4987 4988 error = dmu_objset_hold(zc->zc_name, FTAG, &os); 4989 if (error != 0) 4990 return (error); 4991 4992 error = dmu_object_next(os, &zc->zc_obj, B_FALSE, 4993 dsl_dataset_phys(os->os_dsl_dataset)->ds_prev_snap_txg); 4994 4995 dmu_objset_rele(os, FTAG); 4996 return (error); 4997} 4998 4999/* 5000 * inputs: 5001 * zc_name name of filesystem 5002 * zc_value prefix name for snapshot 5003 * zc_cleanup_fd cleanup-on-exit file descriptor for calling process 5004 * 5005 * outputs: 5006 * zc_value short name of new snapshot 5007 */ 5008static int 5009zfs_ioc_tmp_snapshot(zfs_cmd_t *zc) 5010{ 5011 char *snap_name; 5012 char *hold_name; 5013 int error; 5014 minor_t minor; 5015 5016 error = zfs_onexit_fd_hold(zc->zc_cleanup_fd, &minor); 5017 if (error != 0) 5018 return (error); 5019 5020 snap_name = kmem_asprintf("%s-%016llx", zc->zc_value, 5021 (u_longlong_t)ddi_get_lbolt64()); 5022 hold_name = kmem_asprintf("%%%s", zc->zc_value); 5023 5024 error = dsl_dataset_snapshot_tmp(zc->zc_name, snap_name, minor, 5025 hold_name); 5026 if (error == 0) 5027 (void) strcpy(zc->zc_value, snap_name); 5028 strfree(snap_name); 5029 strfree(hold_name); 5030 zfs_onexit_fd_rele(zc->zc_cleanup_fd); 5031 return (error); 5032} 5033 5034/* 5035 * inputs: 5036 * zc_name name of "to" snapshot 5037 * zc_value name of "from" snapshot 5038 * zc_cookie file descriptor to write diff data on 5039 * 5040 * outputs: 5041 * dmu_diff_record_t's to the file descriptor 5042 */ 5043static int 5044zfs_ioc_diff(zfs_cmd_t *zc) 5045{ 5046 file_t *fp; 5047 cap_rights_t rights; 5048 offset_t off; 5049 int error; 5050 5051#ifdef illumos 5052 fp = getf(zc->zc_cookie); 5053#else 5054 fget_write(curthread, zc->zc_cookie, 5055 cap_rights_init(&rights, CAP_WRITE), &fp); 5056#endif 5057 if (fp == NULL) 5058 return (SET_ERROR(EBADF)); 5059 5060 off = fp->f_offset; 5061 5062#ifdef illumos 5063 error = dmu_diff(zc->zc_name, zc->zc_value, fp->f_vnode, &off); 5064#else 5065 error = dmu_diff(zc->zc_name, zc->zc_value, fp, &off); 5066#endif 5067 5068 if (off >= 0 && off <= MAXOFFSET_T) 5069 fp->f_offset = off; 5070 releasef(zc->zc_cookie); 5071 5072 return (error); 5073} 5074 5075#ifdef illumos 5076/* 5077 * Remove all ACL files in shares dir 5078 */ 5079static int 5080zfs_smb_acl_purge(znode_t *dzp) 5081{ 5082 zap_cursor_t zc; 5083 zap_attribute_t zap; 5084 zfsvfs_t *zfsvfs = dzp->z_zfsvfs; 5085 int error; 5086 5087 for (zap_cursor_init(&zc, zfsvfs->z_os, dzp->z_id); 5088 (error = zap_cursor_retrieve(&zc, &zap)) == 0; 5089 zap_cursor_advance(&zc)) { 5090 if ((error = VOP_REMOVE(ZTOV(dzp), zap.za_name, kcred, 5091 NULL, 0)) != 0) 5092 break; 5093 } 5094 zap_cursor_fini(&zc); 5095 return (error); 5096} 5097#endif /* illumos */ 5098 5099static int 5100zfs_ioc_smb_acl(zfs_cmd_t *zc) 5101{ 5102#ifdef illumos 5103 vnode_t *vp; 5104 znode_t *dzp; 5105 vnode_t *resourcevp = NULL; 5106 znode_t *sharedir; 5107 zfsvfs_t *zfsvfs; 5108 nvlist_t *nvlist; 5109 char *src, *target; 5110 vattr_t vattr; 5111 vsecattr_t vsec; 5112 int error = 0; 5113 5114 if ((error = lookupname(zc->zc_value, UIO_SYSSPACE, 5115 NO_FOLLOW, NULL, &vp)) != 0) 5116 return (error); 5117 5118 /* Now make sure mntpnt and dataset are ZFS */ 5119 5120 if (strcmp(vp->v_vfsp->mnt_stat.f_fstypename, "zfs") != 0 || 5121 (strcmp((char *)refstr_value(vp->v_vfsp->vfs_resource), 5122 zc->zc_name) != 0)) { 5123 VN_RELE(vp); 5124 return (SET_ERROR(EINVAL)); 5125 } 5126 5127 dzp = VTOZ(vp); 5128 zfsvfs = dzp->z_zfsvfs; 5129 ZFS_ENTER(zfsvfs); 5130 5131 /* 5132 * Create share dir if its missing. 5133 */ 5134 mutex_enter(&zfsvfs->z_lock); 5135 if (zfsvfs->z_shares_dir == 0) { 5136 dmu_tx_t *tx; 5137 5138 tx = dmu_tx_create(zfsvfs->z_os); 5139 dmu_tx_hold_zap(tx, MASTER_NODE_OBJ, TRUE, 5140 ZFS_SHARES_DIR); 5141 dmu_tx_hold_zap(tx, DMU_NEW_OBJECT, FALSE, NULL); 5142 error = dmu_tx_assign(tx, TXG_WAIT); 5143 if (error != 0) { 5144 dmu_tx_abort(tx); 5145 } else { 5146 error = zfs_create_share_dir(zfsvfs, tx); 5147 dmu_tx_commit(tx); 5148 } 5149 if (error != 0) { 5150 mutex_exit(&zfsvfs->z_lock); 5151 VN_RELE(vp); 5152 ZFS_EXIT(zfsvfs); 5153 return (error); 5154 } 5155 } 5156 mutex_exit(&zfsvfs->z_lock); 5157 5158 ASSERT(zfsvfs->z_shares_dir); 5159 if ((error = zfs_zget(zfsvfs, zfsvfs->z_shares_dir, &sharedir)) != 0) { 5160 VN_RELE(vp); 5161 ZFS_EXIT(zfsvfs); 5162 return (error); 5163 } 5164 5165 switch (zc->zc_cookie) { 5166 case ZFS_SMB_ACL_ADD: 5167 vattr.va_mask = AT_MODE|AT_UID|AT_GID|AT_TYPE; 5168 vattr.va_type = VREG; 5169 vattr.va_mode = S_IFREG|0777; 5170 vattr.va_uid = 0; 5171 vattr.va_gid = 0; 5172 5173 vsec.vsa_mask = VSA_ACE; 5174 vsec.vsa_aclentp = &full_access; 5175 vsec.vsa_aclentsz = sizeof (full_access); 5176 vsec.vsa_aclcnt = 1; 5177 5178 error = VOP_CREATE(ZTOV(sharedir), zc->zc_string, 5179 &vattr, EXCL, 0, &resourcevp, kcred, 0, NULL, &vsec); 5180 if (resourcevp) 5181 VN_RELE(resourcevp); 5182 break; 5183 5184 case ZFS_SMB_ACL_REMOVE: 5185 error = VOP_REMOVE(ZTOV(sharedir), zc->zc_string, kcred, 5186 NULL, 0); 5187 break; 5188 5189 case ZFS_SMB_ACL_RENAME: 5190 if ((error = get_nvlist(zc->zc_nvlist_src, 5191 zc->zc_nvlist_src_size, zc->zc_iflags, &nvlist)) != 0) { 5192 VN_RELE(vp); 5193 VN_RELE(ZTOV(sharedir)); 5194 ZFS_EXIT(zfsvfs); 5195 return (error); 5196 } 5197 if (nvlist_lookup_string(nvlist, ZFS_SMB_ACL_SRC, &src) || 5198 nvlist_lookup_string(nvlist, ZFS_SMB_ACL_TARGET, 5199 &target)) { 5200 VN_RELE(vp); 5201 VN_RELE(ZTOV(sharedir)); 5202 ZFS_EXIT(zfsvfs); 5203 nvlist_free(nvlist); 5204 return (error); 5205 } 5206 error = VOP_RENAME(ZTOV(sharedir), src, ZTOV(sharedir), target, 5207 kcred, NULL, 0); 5208 nvlist_free(nvlist); 5209 break; 5210 5211 case ZFS_SMB_ACL_PURGE: 5212 error = zfs_smb_acl_purge(sharedir); 5213 break; 5214 5215 default: 5216 error = SET_ERROR(EINVAL); 5217 break; 5218 } 5219 5220 VN_RELE(vp); 5221 VN_RELE(ZTOV(sharedir)); 5222 5223 ZFS_EXIT(zfsvfs); 5224 5225 return (error); 5226#else /* !illumos */ 5227 return (EOPNOTSUPP); 5228#endif /* illumos */ 5229} 5230 5231/* 5232 * innvl: { 5233 * "holds" -> { snapname -> holdname (string), ... } 5234 * (optional) "cleanup_fd" -> fd (int32) 5235 * } 5236 * 5237 * outnvl: { 5238 * snapname -> error value (int32) 5239 * ... 5240 * } 5241 */ 5242/* ARGSUSED */ 5243static int 5244zfs_ioc_hold(const char *pool, nvlist_t *args, nvlist_t *errlist) 5245{ 5246 nvpair_t *pair; 5247 nvlist_t *holds; 5248 int cleanup_fd = -1; 5249 int error; 5250 minor_t minor = 0; 5251 5252 error = nvlist_lookup_nvlist(args, "holds", &holds); 5253 if (error != 0) 5254 return (SET_ERROR(EINVAL)); 5255 5256 /* make sure the user didn't pass us any invalid (empty) tags */ 5257 for (pair = nvlist_next_nvpair(holds, NULL); pair != NULL; 5258 pair = nvlist_next_nvpair(holds, pair)) { 5259 char *htag; 5260 5261 error = nvpair_value_string(pair, &htag); 5262 if (error != 0) 5263 return (SET_ERROR(error)); 5264 5265 if (strlen(htag) == 0) 5266 return (SET_ERROR(EINVAL)); 5267 } 5268 5269 if (nvlist_lookup_int32(args, "cleanup_fd", &cleanup_fd) == 0) { 5270 error = zfs_onexit_fd_hold(cleanup_fd, &minor); 5271 if (error != 0) 5272 return (error); 5273 } 5274 5275 error = dsl_dataset_user_hold(holds, minor, errlist); 5276 if (minor != 0) 5277 zfs_onexit_fd_rele(cleanup_fd); 5278 return (error); 5279} 5280 5281/* 5282 * innvl is not used. 5283 * 5284 * outnvl: { 5285 * holdname -> time added (uint64 seconds since epoch) 5286 * ... 5287 * } 5288 */ 5289/* ARGSUSED */ 5290static int 5291zfs_ioc_get_holds(const char *snapname, nvlist_t *args, nvlist_t *outnvl) 5292{ 5293 return (dsl_dataset_get_holds(snapname, outnvl)); 5294} 5295 5296/* 5297 * innvl: { 5298 * snapname -> { holdname, ... } 5299 * ... 5300 * } 5301 * 5302 * outnvl: { 5303 * snapname -> error value (int32) 5304 * ... 5305 * } 5306 */ 5307/* ARGSUSED */ 5308static int 5309zfs_ioc_release(const char *pool, nvlist_t *holds, nvlist_t *errlist) 5310{ 5311 return (dsl_dataset_user_release(holds, errlist)); 5312} 5313 5314/* 5315 * inputs: 5316 * zc_name name of new filesystem or snapshot 5317 * zc_value full name of old snapshot 5318 * 5319 * outputs: 5320 * zc_cookie space in bytes 5321 * zc_objset_type compressed space in bytes 5322 * zc_perm_action uncompressed space in bytes 5323 */ 5324static int 5325zfs_ioc_space_written(zfs_cmd_t *zc) 5326{ 5327 int error; 5328 dsl_pool_t *dp; 5329 dsl_dataset_t *new, *old; 5330 5331 error = dsl_pool_hold(zc->zc_name, FTAG, &dp); 5332 if (error != 0) 5333 return (error); 5334 error = dsl_dataset_hold(dp, zc->zc_name, FTAG, &new); 5335 if (error != 0) { 5336 dsl_pool_rele(dp, FTAG); 5337 return (error); 5338 } 5339 error = dsl_dataset_hold(dp, zc->zc_value, FTAG, &old); 5340 if (error != 0) { 5341 dsl_dataset_rele(new, FTAG); 5342 dsl_pool_rele(dp, FTAG); 5343 return (error); 5344 } 5345 5346 error = dsl_dataset_space_written(old, new, &zc->zc_cookie, 5347 &zc->zc_objset_type, &zc->zc_perm_action); 5348 dsl_dataset_rele(old, FTAG); 5349 dsl_dataset_rele(new, FTAG); 5350 dsl_pool_rele(dp, FTAG); 5351 return (error); 5352} 5353 5354/* 5355 * innvl: { 5356 * "firstsnap" -> snapshot name 5357 * } 5358 * 5359 * outnvl: { 5360 * "used" -> space in bytes 5361 * "compressed" -> compressed space in bytes 5362 * "uncompressed" -> uncompressed space in bytes 5363 * } 5364 */ 5365static int 5366zfs_ioc_space_snaps(const char *lastsnap, nvlist_t *innvl, nvlist_t *outnvl) 5367{ 5368 int error; 5369 dsl_pool_t *dp; 5370 dsl_dataset_t *new, *old; 5371 char *firstsnap; 5372 uint64_t used, comp, uncomp; 5373 5374 if (nvlist_lookup_string(innvl, "firstsnap", &firstsnap) != 0) 5375 return (SET_ERROR(EINVAL)); 5376 5377 error = dsl_pool_hold(lastsnap, FTAG, &dp); 5378 if (error != 0) 5379 return (error); 5380 5381 error = dsl_dataset_hold(dp, lastsnap, FTAG, &new); 5382 if (error == 0 && !new->ds_is_snapshot) { 5383 dsl_dataset_rele(new, FTAG); 5384 error = SET_ERROR(EINVAL); 5385 } 5386 if (error != 0) { 5387 dsl_pool_rele(dp, FTAG); 5388 return (error); 5389 } 5390 error = dsl_dataset_hold(dp, firstsnap, FTAG, &old); 5391 if (error == 0 && !old->ds_is_snapshot) { 5392 dsl_dataset_rele(old, FTAG); 5393 error = SET_ERROR(EINVAL); 5394 } 5395 if (error != 0) { 5396 dsl_dataset_rele(new, FTAG); 5397 dsl_pool_rele(dp, FTAG); 5398 return (error); 5399 } 5400 5401 error = dsl_dataset_space_wouldfree(old, new, &used, &comp, &uncomp); 5402 dsl_dataset_rele(old, FTAG); 5403 dsl_dataset_rele(new, FTAG); 5404 dsl_pool_rele(dp, FTAG); 5405 fnvlist_add_uint64(outnvl, "used", used); 5406 fnvlist_add_uint64(outnvl, "compressed", comp); 5407 fnvlist_add_uint64(outnvl, "uncompressed", uncomp); 5408 return (error); 5409} 5410 5411static int 5412zfs_ioc_jail(zfs_cmd_t *zc) 5413{ 5414 5415 return (zone_dataset_attach(curthread->td_ucred, zc->zc_name, 5416 (int)zc->zc_jailid)); 5417} 5418 5419static int 5420zfs_ioc_unjail(zfs_cmd_t *zc) 5421{ 5422 5423 return (zone_dataset_detach(curthread->td_ucred, zc->zc_name, 5424 (int)zc->zc_jailid)); 5425} 5426 5427/* 5428 * innvl: { 5429 * "fd" -> file descriptor to write stream to (int32) 5430 * (optional) "fromsnap" -> full snap name to send an incremental from 5431 * (optional) "largeblockok" -> (value ignored) 5432 * indicates that blocks > 128KB are permitted 5433 * (optional) "embedok" -> (value ignored) 5434 * presence indicates DRR_WRITE_EMBEDDED records are permitted 5435 * } 5436 * 5437 * outnvl is unused 5438 */ 5439/* ARGSUSED */ 5440static int 5441zfs_ioc_send_new(const char *snapname, nvlist_t *innvl, nvlist_t *outnvl) 5442{ 5443 cap_rights_t rights; 5444 file_t *fp; 5445 int error; 5446 offset_t off; 5447 char *fromname = NULL; 5448 int fd; 5449 boolean_t largeblockok; 5450 boolean_t embedok; 5451 5452 error = nvlist_lookup_int32(innvl, "fd", &fd); 5453 if (error != 0) 5454 return (SET_ERROR(EINVAL)); 5455 5456 (void) nvlist_lookup_string(innvl, "fromsnap", &fromname); 5457 5458 largeblockok = nvlist_exists(innvl, "largeblockok"); 5459 embedok = nvlist_exists(innvl, "embedok"); 5460 5461#ifdef illumos 5462 file_t *fp = getf(fd); 5463#else 5464 fget_write(curthread, fd, cap_rights_init(&rights, CAP_WRITE), &fp); 5465#endif 5466 if (fp == NULL) 5467 return (SET_ERROR(EBADF)); 5468 5469 off = fp->f_offset; 5470 error = dmu_send(snapname, fromname, embedok, largeblockok, 5471#ifdef illumos 5472 fd, fp->f_vnode, &off); 5473#else 5474 fd, fp, &off); 5475#endif 5476 5477#ifdef illumos 5478 if (VOP_SEEK(fp->f_vnode, fp->f_offset, &off, NULL) == 0) 5479 fp->f_offset = off; 5480#else 5481 fp->f_offset = off; 5482#endif 5483 5484 releasef(fd); 5485 return (error); 5486} 5487 5488/* 5489 * Determine approximately how large a zfs send stream will be -- the number 5490 * of bytes that will be written to the fd supplied to zfs_ioc_send_new(). 5491 * 5492 * innvl: { 5493 * (optional) "from" -> full snap or bookmark name to send an incremental 5494 * from 5495 * } 5496 * 5497 * outnvl: { 5498 * "space" -> bytes of space (uint64) 5499 * } 5500 */ 5501static int 5502zfs_ioc_send_space(const char *snapname, nvlist_t *innvl, nvlist_t *outnvl) 5503{ 5504 dsl_pool_t *dp; 5505 dsl_dataset_t *tosnap; 5506 int error; 5507 char *fromname; 5508 uint64_t space; 5509 5510 error = dsl_pool_hold(snapname, FTAG, &dp); 5511 if (error != 0) 5512 return (error); 5513 5514 error = dsl_dataset_hold(dp, snapname, FTAG, &tosnap); 5515 if (error != 0) { 5516 dsl_pool_rele(dp, FTAG); 5517 return (error); 5518 } 5519 5520 error = nvlist_lookup_string(innvl, "from", &fromname); 5521 if (error == 0) { 5522 if (strchr(fromname, '@') != NULL) { 5523 /* 5524 * If from is a snapshot, hold it and use the more 5525 * efficient dmu_send_estimate to estimate send space 5526 * size using deadlists. 5527 */ 5528 dsl_dataset_t *fromsnap; 5529 error = dsl_dataset_hold(dp, fromname, FTAG, &fromsnap); 5530 if (error != 0) 5531 goto out; 5532 error = dmu_send_estimate(tosnap, fromsnap, &space); 5533 dsl_dataset_rele(fromsnap, FTAG); 5534 } else if (strchr(fromname, '#') != NULL) { 5535 /* 5536 * If from is a bookmark, fetch the creation TXG of the 5537 * snapshot it was created from and use that to find 5538 * blocks that were born after it. 5539 */ 5540 zfs_bookmark_phys_t frombm; 5541 5542 error = dsl_bookmark_lookup(dp, fromname, tosnap, 5543 &frombm); 5544 if (error != 0) 5545 goto out; 5546 error = dmu_send_estimate_from_txg(tosnap, 5547 frombm.zbm_creation_txg, &space); 5548 } else { 5549 /* 5550 * from is not properly formatted as a snapshot or 5551 * bookmark 5552 */ 5553 error = SET_ERROR(EINVAL); 5554 goto out; 5555 } 5556 } else { 5557 // If estimating the size of a full send, use dmu_send_estimate 5558 error = dmu_send_estimate(tosnap, NULL, &space); 5559 } 5560 5561 fnvlist_add_uint64(outnvl, "space", space); 5562 5563out: 5564 dsl_dataset_rele(tosnap, FTAG); 5565 dsl_pool_rele(dp, FTAG); 5566 return (error); 5567} 5568 5569static zfs_ioc_vec_t zfs_ioc_vec[ZFS_IOC_LAST - ZFS_IOC_FIRST]; 5570 5571static void 5572zfs_ioctl_register_legacy(zfs_ioc_t ioc, zfs_ioc_legacy_func_t *func, 5573 zfs_secpolicy_func_t *secpolicy, zfs_ioc_namecheck_t namecheck, 5574 boolean_t log_history, zfs_ioc_poolcheck_t pool_check) 5575{ 5576 zfs_ioc_vec_t *vec = &zfs_ioc_vec[ioc - ZFS_IOC_FIRST]; 5577 5578 ASSERT3U(ioc, >=, ZFS_IOC_FIRST); 5579 ASSERT3U(ioc, <, ZFS_IOC_LAST); 5580 ASSERT3P(vec->zvec_legacy_func, ==, NULL); 5581 ASSERT3P(vec->zvec_func, ==, NULL); 5582 5583 vec->zvec_legacy_func = func; 5584 vec->zvec_secpolicy = secpolicy; 5585 vec->zvec_namecheck = namecheck; 5586 vec->zvec_allow_log = log_history; 5587 vec->zvec_pool_check = pool_check; 5588} 5589 5590/* 5591 * See the block comment at the beginning of this file for details on 5592 * each argument to this function. 5593 */ 5594static void 5595zfs_ioctl_register(const char *name, zfs_ioc_t ioc, zfs_ioc_func_t *func, 5596 zfs_secpolicy_func_t *secpolicy, zfs_ioc_namecheck_t namecheck, 5597 zfs_ioc_poolcheck_t pool_check, boolean_t smush_outnvlist, 5598 boolean_t allow_log) 5599{ 5600 zfs_ioc_vec_t *vec = &zfs_ioc_vec[ioc - ZFS_IOC_FIRST]; 5601 5602 ASSERT3U(ioc, >=, ZFS_IOC_FIRST); 5603 ASSERT3U(ioc, <, ZFS_IOC_LAST); 5604 ASSERT3P(vec->zvec_legacy_func, ==, NULL); 5605 ASSERT3P(vec->zvec_func, ==, NULL); 5606 5607 /* if we are logging, the name must be valid */ 5608 ASSERT(!allow_log || namecheck != NO_NAME); 5609 5610 vec->zvec_name = name; 5611 vec->zvec_func = func; 5612 vec->zvec_secpolicy = secpolicy; 5613 vec->zvec_namecheck = namecheck; 5614 vec->zvec_pool_check = pool_check; 5615 vec->zvec_smush_outnvlist = smush_outnvlist; 5616 vec->zvec_allow_log = allow_log; 5617} 5618 5619static void 5620zfs_ioctl_register_pool(zfs_ioc_t ioc, zfs_ioc_legacy_func_t *func, 5621 zfs_secpolicy_func_t *secpolicy, boolean_t log_history, 5622 zfs_ioc_poolcheck_t pool_check) 5623{ 5624 zfs_ioctl_register_legacy(ioc, func, secpolicy, 5625 POOL_NAME, log_history, pool_check); 5626} 5627 5628static void 5629zfs_ioctl_register_dataset_nolog(zfs_ioc_t ioc, zfs_ioc_legacy_func_t *func, 5630 zfs_secpolicy_func_t *secpolicy, zfs_ioc_poolcheck_t pool_check) 5631{ 5632 zfs_ioctl_register_legacy(ioc, func, secpolicy, 5633 DATASET_NAME, B_FALSE, pool_check); 5634} 5635 5636static void 5637zfs_ioctl_register_pool_modify(zfs_ioc_t ioc, zfs_ioc_legacy_func_t *func) 5638{ 5639 zfs_ioctl_register_legacy(ioc, func, zfs_secpolicy_config, 5640 POOL_NAME, B_TRUE, POOL_CHECK_SUSPENDED | POOL_CHECK_READONLY); 5641} 5642 5643static void 5644zfs_ioctl_register_pool_meta(zfs_ioc_t ioc, zfs_ioc_legacy_func_t *func, 5645 zfs_secpolicy_func_t *secpolicy) 5646{ 5647 zfs_ioctl_register_legacy(ioc, func, secpolicy, 5648 NO_NAME, B_FALSE, POOL_CHECK_NONE); 5649} 5650 5651static void 5652zfs_ioctl_register_dataset_read_secpolicy(zfs_ioc_t ioc, 5653 zfs_ioc_legacy_func_t *func, zfs_secpolicy_func_t *secpolicy) 5654{ 5655 zfs_ioctl_register_legacy(ioc, func, secpolicy, 5656 DATASET_NAME, B_FALSE, POOL_CHECK_SUSPENDED); 5657} 5658 5659static void 5660zfs_ioctl_register_dataset_read(zfs_ioc_t ioc, zfs_ioc_legacy_func_t *func) 5661{ 5662 zfs_ioctl_register_dataset_read_secpolicy(ioc, func, 5663 zfs_secpolicy_read); 5664} 5665 5666static void 5667zfs_ioctl_register_dataset_modify(zfs_ioc_t ioc, zfs_ioc_legacy_func_t *func, 5668 zfs_secpolicy_func_t *secpolicy) 5669{ 5670 zfs_ioctl_register_legacy(ioc, func, secpolicy, 5671 DATASET_NAME, B_TRUE, POOL_CHECK_SUSPENDED | POOL_CHECK_READONLY); 5672} 5673 5674static void 5675zfs_ioctl_init(void) 5676{ 5677 zfs_ioctl_register("snapshot", ZFS_IOC_SNAPSHOT, 5678 zfs_ioc_snapshot, zfs_secpolicy_snapshot, POOL_NAME, 5679 POOL_CHECK_SUSPENDED | POOL_CHECK_READONLY, B_TRUE, B_TRUE); 5680 5681 zfs_ioctl_register("log_history", ZFS_IOC_LOG_HISTORY, 5682 zfs_ioc_log_history, zfs_secpolicy_log_history, NO_NAME, 5683 POOL_CHECK_SUSPENDED | POOL_CHECK_READONLY, B_FALSE, B_FALSE); 5684 5685 zfs_ioctl_register("space_snaps", ZFS_IOC_SPACE_SNAPS, 5686 zfs_ioc_space_snaps, zfs_secpolicy_read, DATASET_NAME, 5687 POOL_CHECK_SUSPENDED, B_FALSE, B_FALSE); 5688 5689 zfs_ioctl_register("send", ZFS_IOC_SEND_NEW, 5690 zfs_ioc_send_new, zfs_secpolicy_send_new, DATASET_NAME, 5691 POOL_CHECK_SUSPENDED, B_FALSE, B_FALSE); 5692 5693 zfs_ioctl_register("send_space", ZFS_IOC_SEND_SPACE, 5694 zfs_ioc_send_space, zfs_secpolicy_read, DATASET_NAME, 5695 POOL_CHECK_SUSPENDED, B_FALSE, B_FALSE); 5696 5697 zfs_ioctl_register("create", ZFS_IOC_CREATE, 5698 zfs_ioc_create, zfs_secpolicy_create_clone, DATASET_NAME, 5699 POOL_CHECK_SUSPENDED | POOL_CHECK_READONLY, B_TRUE, B_TRUE); 5700 5701 zfs_ioctl_register("clone", ZFS_IOC_CLONE, 5702 zfs_ioc_clone, zfs_secpolicy_create_clone, DATASET_NAME, 5703 POOL_CHECK_SUSPENDED | POOL_CHECK_READONLY, B_TRUE, B_TRUE); 5704 5705 zfs_ioctl_register("destroy_snaps", ZFS_IOC_DESTROY_SNAPS, 5706 zfs_ioc_destroy_snaps, zfs_secpolicy_destroy_snaps, POOL_NAME, 5707 POOL_CHECK_SUSPENDED | POOL_CHECK_READONLY, B_TRUE, B_TRUE); 5708 5709 zfs_ioctl_register("hold", ZFS_IOC_HOLD, 5710 zfs_ioc_hold, zfs_secpolicy_hold, POOL_NAME, 5711 POOL_CHECK_SUSPENDED | POOL_CHECK_READONLY, B_TRUE, B_TRUE); 5712 zfs_ioctl_register("release", ZFS_IOC_RELEASE, 5713 zfs_ioc_release, zfs_secpolicy_release, POOL_NAME, 5714 POOL_CHECK_SUSPENDED | POOL_CHECK_READONLY, B_TRUE, B_TRUE); 5715 5716 zfs_ioctl_register("get_holds", ZFS_IOC_GET_HOLDS, 5717 zfs_ioc_get_holds, zfs_secpolicy_read, DATASET_NAME, 5718 POOL_CHECK_SUSPENDED, B_FALSE, B_FALSE); 5719 5720 zfs_ioctl_register("rollback", ZFS_IOC_ROLLBACK, 5721 zfs_ioc_rollback, zfs_secpolicy_rollback, DATASET_NAME, 5722 POOL_CHECK_SUSPENDED | POOL_CHECK_READONLY, B_FALSE, B_TRUE); 5723 5724 zfs_ioctl_register("bookmark", ZFS_IOC_BOOKMARK, 5725 zfs_ioc_bookmark, zfs_secpolicy_bookmark, POOL_NAME, 5726 POOL_CHECK_SUSPENDED | POOL_CHECK_READONLY, B_TRUE, B_TRUE); 5727 5728 zfs_ioctl_register("get_bookmarks", ZFS_IOC_GET_BOOKMARKS, 5729 zfs_ioc_get_bookmarks, zfs_secpolicy_read, DATASET_NAME, 5730 POOL_CHECK_SUSPENDED, B_FALSE, B_FALSE); 5731 5732 zfs_ioctl_register("destroy_bookmarks", ZFS_IOC_DESTROY_BOOKMARKS, 5733 zfs_ioc_destroy_bookmarks, zfs_secpolicy_destroy_bookmarks, 5734 POOL_NAME, 5735 POOL_CHECK_SUSPENDED | POOL_CHECK_READONLY, B_TRUE, B_TRUE); 5736 5737 /* IOCTLS that use the legacy function signature */ 5738 5739 zfs_ioctl_register_legacy(ZFS_IOC_POOL_FREEZE, zfs_ioc_pool_freeze, 5740 zfs_secpolicy_config, NO_NAME, B_FALSE, POOL_CHECK_READONLY); 5741 5742 zfs_ioctl_register_pool(ZFS_IOC_POOL_CREATE, zfs_ioc_pool_create, 5743 zfs_secpolicy_config, B_TRUE, POOL_CHECK_NONE); 5744 zfs_ioctl_register_pool_modify(ZFS_IOC_POOL_SCAN, 5745 zfs_ioc_pool_scan); 5746 zfs_ioctl_register_pool_modify(ZFS_IOC_POOL_UPGRADE, 5747 zfs_ioc_pool_upgrade); 5748 zfs_ioctl_register_pool_modify(ZFS_IOC_VDEV_ADD, 5749 zfs_ioc_vdev_add); 5750 zfs_ioctl_register_pool_modify(ZFS_IOC_VDEV_REMOVE, 5751 zfs_ioc_vdev_remove); 5752 zfs_ioctl_register_pool_modify(ZFS_IOC_VDEV_SET_STATE, 5753 zfs_ioc_vdev_set_state); 5754 zfs_ioctl_register_pool_modify(ZFS_IOC_VDEV_ATTACH, 5755 zfs_ioc_vdev_attach); 5756 zfs_ioctl_register_pool_modify(ZFS_IOC_VDEV_DETACH, 5757 zfs_ioc_vdev_detach); 5758 zfs_ioctl_register_pool_modify(ZFS_IOC_VDEV_SETPATH, 5759 zfs_ioc_vdev_setpath); 5760 zfs_ioctl_register_pool_modify(ZFS_IOC_VDEV_SETFRU, 5761 zfs_ioc_vdev_setfru); 5762 zfs_ioctl_register_pool_modify(ZFS_IOC_POOL_SET_PROPS, 5763 zfs_ioc_pool_set_props); 5764 zfs_ioctl_register_pool_modify(ZFS_IOC_VDEV_SPLIT, 5765 zfs_ioc_vdev_split); 5766 zfs_ioctl_register_pool_modify(ZFS_IOC_POOL_REGUID, 5767 zfs_ioc_pool_reguid); 5768 5769 zfs_ioctl_register_pool_meta(ZFS_IOC_POOL_CONFIGS, 5770 zfs_ioc_pool_configs, zfs_secpolicy_none); 5771 zfs_ioctl_register_pool_meta(ZFS_IOC_POOL_TRYIMPORT, 5772 zfs_ioc_pool_tryimport, zfs_secpolicy_config); 5773 zfs_ioctl_register_pool_meta(ZFS_IOC_INJECT_FAULT, 5774 zfs_ioc_inject_fault, zfs_secpolicy_inject); 5775 zfs_ioctl_register_pool_meta(ZFS_IOC_CLEAR_FAULT, 5776 zfs_ioc_clear_fault, zfs_secpolicy_inject); 5777 zfs_ioctl_register_pool_meta(ZFS_IOC_INJECT_LIST_NEXT, 5778 zfs_ioc_inject_list_next, zfs_secpolicy_inject); 5779 5780 /* 5781 * pool destroy, and export don't log the history as part of 5782 * zfsdev_ioctl, but rather zfs_ioc_pool_export 5783 * does the logging of those commands. 5784 */ 5785 zfs_ioctl_register_pool(ZFS_IOC_POOL_DESTROY, zfs_ioc_pool_destroy, 5786 zfs_secpolicy_config, B_FALSE, POOL_CHECK_NONE); 5787 zfs_ioctl_register_pool(ZFS_IOC_POOL_EXPORT, zfs_ioc_pool_export, 5788 zfs_secpolicy_config, B_FALSE, POOL_CHECK_NONE); 5789 5790 zfs_ioctl_register_pool(ZFS_IOC_POOL_STATS, zfs_ioc_pool_stats, 5791 zfs_secpolicy_read, B_FALSE, POOL_CHECK_NONE); 5792 zfs_ioctl_register_pool(ZFS_IOC_POOL_GET_PROPS, zfs_ioc_pool_get_props, 5793 zfs_secpolicy_read, B_FALSE, POOL_CHECK_NONE); 5794 5795 zfs_ioctl_register_pool(ZFS_IOC_ERROR_LOG, zfs_ioc_error_log, 5796 zfs_secpolicy_inject, B_FALSE, POOL_CHECK_NONE); 5797 zfs_ioctl_register_pool(ZFS_IOC_DSOBJ_TO_DSNAME, 5798 zfs_ioc_dsobj_to_dsname, 5799 zfs_secpolicy_diff, B_FALSE, POOL_CHECK_NONE); 5800 zfs_ioctl_register_pool(ZFS_IOC_POOL_GET_HISTORY, 5801 zfs_ioc_pool_get_history, 5802 zfs_secpolicy_config, B_FALSE, POOL_CHECK_SUSPENDED); 5803 5804 zfs_ioctl_register_pool(ZFS_IOC_POOL_IMPORT, zfs_ioc_pool_import, 5805 zfs_secpolicy_config, B_TRUE, POOL_CHECK_NONE); 5806 5807 zfs_ioctl_register_pool(ZFS_IOC_CLEAR, zfs_ioc_clear, 5808 zfs_secpolicy_config, B_TRUE, POOL_CHECK_NONE); 5809 zfs_ioctl_register_pool(ZFS_IOC_POOL_REOPEN, zfs_ioc_pool_reopen, 5810 zfs_secpolicy_config, B_TRUE, POOL_CHECK_SUSPENDED); 5811 5812 zfs_ioctl_register_dataset_read(ZFS_IOC_SPACE_WRITTEN, 5813 zfs_ioc_space_written); 5814 zfs_ioctl_register_dataset_read(ZFS_IOC_OBJSET_RECVD_PROPS, 5815 zfs_ioc_objset_recvd_props); 5816 zfs_ioctl_register_dataset_read(ZFS_IOC_NEXT_OBJ, 5817 zfs_ioc_next_obj); 5818 zfs_ioctl_register_dataset_read(ZFS_IOC_GET_FSACL, 5819 zfs_ioc_get_fsacl); 5820 zfs_ioctl_register_dataset_read(ZFS_IOC_OBJSET_STATS, 5821 zfs_ioc_objset_stats); 5822 zfs_ioctl_register_dataset_read(ZFS_IOC_OBJSET_ZPLPROPS, 5823 zfs_ioc_objset_zplprops); 5824 zfs_ioctl_register_dataset_read(ZFS_IOC_DATASET_LIST_NEXT, 5825 zfs_ioc_dataset_list_next); 5826 zfs_ioctl_register_dataset_read(ZFS_IOC_SNAPSHOT_LIST_NEXT, 5827 zfs_ioc_snapshot_list_next); 5828 zfs_ioctl_register_dataset_read(ZFS_IOC_SEND_PROGRESS, 5829 zfs_ioc_send_progress); 5830 5831 zfs_ioctl_register_dataset_read_secpolicy(ZFS_IOC_DIFF, 5832 zfs_ioc_diff, zfs_secpolicy_diff); 5833 zfs_ioctl_register_dataset_read_secpolicy(ZFS_IOC_OBJ_TO_STATS, 5834 zfs_ioc_obj_to_stats, zfs_secpolicy_diff); 5835 zfs_ioctl_register_dataset_read_secpolicy(ZFS_IOC_OBJ_TO_PATH, 5836 zfs_ioc_obj_to_path, zfs_secpolicy_diff); 5837 zfs_ioctl_register_dataset_read_secpolicy(ZFS_IOC_USERSPACE_ONE, 5838 zfs_ioc_userspace_one, zfs_secpolicy_userspace_one); 5839 zfs_ioctl_register_dataset_read_secpolicy(ZFS_IOC_USERSPACE_MANY, 5840 zfs_ioc_userspace_many, zfs_secpolicy_userspace_many); 5841 zfs_ioctl_register_dataset_read_secpolicy(ZFS_IOC_SEND, 5842 zfs_ioc_send, zfs_secpolicy_send); 5843 5844 zfs_ioctl_register_dataset_modify(ZFS_IOC_SET_PROP, zfs_ioc_set_prop, 5845 zfs_secpolicy_none); 5846 zfs_ioctl_register_dataset_modify(ZFS_IOC_DESTROY, zfs_ioc_destroy, 5847 zfs_secpolicy_destroy); 5848 zfs_ioctl_register_dataset_modify(ZFS_IOC_RENAME, zfs_ioc_rename, 5849 zfs_secpolicy_rename); 5850 zfs_ioctl_register_dataset_modify(ZFS_IOC_RECV, zfs_ioc_recv, 5851 zfs_secpolicy_recv); 5852 zfs_ioctl_register_dataset_modify(ZFS_IOC_PROMOTE, zfs_ioc_promote, 5853 zfs_secpolicy_promote); 5854 zfs_ioctl_register_dataset_modify(ZFS_IOC_INHERIT_PROP, 5855 zfs_ioc_inherit_prop, zfs_secpolicy_inherit_prop); 5856 zfs_ioctl_register_dataset_modify(ZFS_IOC_SET_FSACL, zfs_ioc_set_fsacl, 5857 zfs_secpolicy_set_fsacl); 5858 5859 zfs_ioctl_register_dataset_nolog(ZFS_IOC_SHARE, zfs_ioc_share, 5860 zfs_secpolicy_share, POOL_CHECK_NONE); 5861 zfs_ioctl_register_dataset_nolog(ZFS_IOC_SMB_ACL, zfs_ioc_smb_acl, 5862 zfs_secpolicy_smb_acl, POOL_CHECK_NONE); 5863 zfs_ioctl_register_dataset_nolog(ZFS_IOC_USERSPACE_UPGRADE, 5864 zfs_ioc_userspace_upgrade, zfs_secpolicy_userspace_upgrade, 5865 POOL_CHECK_SUSPENDED | POOL_CHECK_READONLY); 5866 zfs_ioctl_register_dataset_nolog(ZFS_IOC_TMP_SNAPSHOT, 5867 zfs_ioc_tmp_snapshot, zfs_secpolicy_tmp_snapshot, 5868 POOL_CHECK_SUSPENDED | POOL_CHECK_READONLY); 5869 5870#ifdef __FreeBSD__ 5871 zfs_ioctl_register_dataset_nolog(ZFS_IOC_JAIL, zfs_ioc_jail, 5872 zfs_secpolicy_config, POOL_CHECK_NONE); 5873 zfs_ioctl_register_dataset_nolog(ZFS_IOC_UNJAIL, zfs_ioc_unjail, 5874 zfs_secpolicy_config, POOL_CHECK_NONE); 5875#endif 5876} 5877 5878int 5879pool_status_check(const char *name, zfs_ioc_namecheck_t type, 5880 zfs_ioc_poolcheck_t check) 5881{ 5882 spa_t *spa; 5883 int error; 5884 5885 ASSERT(type == POOL_NAME || type == DATASET_NAME); 5886 5887 if (check & POOL_CHECK_NONE) 5888 return (0); 5889 5890 error = spa_open(name, &spa, FTAG); 5891 if (error == 0) { 5892 if ((check & POOL_CHECK_SUSPENDED) && spa_suspended(spa)) 5893 error = SET_ERROR(EAGAIN); 5894 else if ((check & POOL_CHECK_READONLY) && !spa_writeable(spa)) 5895 error = SET_ERROR(EROFS); 5896 spa_close(spa, FTAG); 5897 } 5898 return (error); 5899} 5900 5901/* 5902 * Find a free minor number. 5903 */ 5904minor_t 5905zfsdev_minor_alloc(void) 5906{ 5907 static minor_t last_minor; 5908 minor_t m; 5909 5910 ASSERT(MUTEX_HELD(&spa_namespace_lock)); 5911 5912 for (m = last_minor + 1; m != last_minor; m++) { 5913 if (m > ZFSDEV_MAX_MINOR) 5914 m = 1; 5915 if (ddi_get_soft_state(zfsdev_state, m) == NULL) { 5916 last_minor = m; 5917 return (m); 5918 } 5919 } 5920 5921 return (0); 5922} 5923 5924static int 5925zfs_ctldev_init(struct cdev *devp) 5926{ 5927 minor_t minor; 5928 zfs_soft_state_t *zs; 5929 5930 ASSERT(MUTEX_HELD(&spa_namespace_lock)); 5931 5932 minor = zfsdev_minor_alloc(); 5933 if (minor == 0) 5934 return (SET_ERROR(ENXIO)); 5935 5936 if (ddi_soft_state_zalloc(zfsdev_state, minor) != DDI_SUCCESS) 5937 return (SET_ERROR(EAGAIN)); 5938 5939 devfs_set_cdevpriv((void *)(uintptr_t)minor, zfsdev_close); 5940 5941 zs = ddi_get_soft_state(zfsdev_state, minor); 5942 zs->zss_type = ZSST_CTLDEV; 5943 zfs_onexit_init((zfs_onexit_t **)&zs->zss_data); 5944 5945 return (0); 5946} 5947 5948static void 5949zfs_ctldev_destroy(zfs_onexit_t *zo, minor_t minor) 5950{ 5951 ASSERT(MUTEX_HELD(&spa_namespace_lock)); 5952 5953 zfs_onexit_destroy(zo); 5954 ddi_soft_state_free(zfsdev_state, minor); 5955} 5956 5957void * 5958zfsdev_get_soft_state(minor_t minor, enum zfs_soft_state_type which) 5959{ 5960 zfs_soft_state_t *zp; 5961 5962 zp = ddi_get_soft_state(zfsdev_state, minor); 5963 if (zp == NULL || zp->zss_type != which) 5964 return (NULL); 5965 5966 return (zp->zss_data); 5967} 5968 5969static int 5970zfsdev_open(struct cdev *devp, int flag, int mode, struct thread *td) 5971{ 5972 int error = 0; 5973 5974#ifdef illumos 5975 if (getminor(*devp) != 0) 5976 return (zvol_open(devp, flag, otyp, cr)); 5977#endif 5978 5979 /* This is the control device. Allocate a new minor if requested. */ 5980 if (flag & FEXCL) { 5981 mutex_enter(&spa_namespace_lock); 5982 error = zfs_ctldev_init(devp); 5983 mutex_exit(&spa_namespace_lock); 5984 } 5985 5986 return (error); 5987} 5988 5989static void 5990zfsdev_close(void *data) 5991{ 5992 zfs_onexit_t *zo; 5993 minor_t minor = (minor_t)(uintptr_t)data; 5994 5995 if (minor == 0) 5996 return; 5997 5998 mutex_enter(&spa_namespace_lock); 5999 zo = zfsdev_get_soft_state(minor, ZSST_CTLDEV); 6000 if (zo == NULL) { 6001 mutex_exit(&spa_namespace_lock); 6002 return; 6003 } 6004 zfs_ctldev_destroy(zo, minor); 6005 mutex_exit(&spa_namespace_lock); 6006} 6007 6008static int 6009zfsdev_ioctl(struct cdev *dev, u_long zcmd, caddr_t arg, int flag, 6010 struct thread *td) 6011{ 6012 zfs_cmd_t *zc; 6013 uint_t vecnum; 6014 int error, rc, len; 6015#ifdef illumos 6016 minor_t minor = getminor(dev); 6017#else 6018 zfs_iocparm_t *zc_iocparm; 6019 int cflag, cmd, oldvecnum; 6020 boolean_t newioc, compat; 6021 void *compat_zc = NULL; 6022 cred_t *cr = td->td_ucred; 6023#endif 6024 const zfs_ioc_vec_t *vec; 6025 char *saved_poolname = NULL; 6026 nvlist_t *innvl = NULL; 6027 6028 cflag = ZFS_CMD_COMPAT_NONE; 6029 compat = B_FALSE; 6030 newioc = B_TRUE; /* "new" style (zfs_iocparm_t) ioctl */ 6031 6032 len = IOCPARM_LEN(zcmd); 6033 vecnum = cmd = zcmd & 0xff; 6034 6035 /* 6036 * Check if we are talking to supported older binaries 6037 * and translate zfs_cmd if necessary 6038 */ 6039 if (len != sizeof(zfs_iocparm_t)) { 6040 newioc = B_FALSE; 6041 compat = B_TRUE; 6042 6043 vecnum = cmd; 6044 6045 switch (len) { 6046 case sizeof(zfs_cmd_zcmd_t): 6047 cflag = ZFS_CMD_COMPAT_LZC; 6048 break; 6049 case sizeof(zfs_cmd_deadman_t): 6050 cflag = ZFS_CMD_COMPAT_DEADMAN; 6051 break; 6052 case sizeof(zfs_cmd_v28_t): 6053 cflag = ZFS_CMD_COMPAT_V28; 6054 break; 6055 case sizeof(zfs_cmd_v15_t): 6056 cflag = ZFS_CMD_COMPAT_V15; 6057 vecnum = zfs_ioctl_v15_to_v28[cmd]; 6058 6059 /* 6060 * Return without further handling 6061 * if the command is blacklisted. 6062 */ 6063 if (vecnum == ZFS_IOC_COMPAT_PASS) 6064 return (0); 6065 else if (vecnum == ZFS_IOC_COMPAT_FAIL) 6066 return (ENOTSUP); 6067 break; 6068 default: 6069 return (EINVAL); 6070 } 6071 } 6072 6073#ifdef illumos 6074 vecnum = cmd - ZFS_IOC_FIRST; 6075 ASSERT3U(getmajor(dev), ==, ddi_driver_major(zfs_dip)); 6076#endif 6077 6078 if (vecnum >= sizeof (zfs_ioc_vec) / sizeof (zfs_ioc_vec[0])) 6079 return (SET_ERROR(EINVAL)); 6080 vec = &zfs_ioc_vec[vecnum]; 6081 6082 zc = kmem_zalloc(sizeof(zfs_cmd_t), KM_SLEEP); 6083 6084#ifdef illumos 6085 error = ddi_copyin((void *)arg, zc, sizeof (zfs_cmd_t), flag); 6086 if (error != 0) { 6087 error = SET_ERROR(EFAULT); 6088 goto out; 6089 } 6090#else /* !illumos */ 6091 bzero(zc, sizeof(zfs_cmd_t)); 6092 6093 if (newioc) { 6094 zc_iocparm = (void *)arg; 6095 6096 switch (zc_iocparm->zfs_ioctl_version) { 6097 case ZFS_IOCVER_CURRENT: 6098 if (zc_iocparm->zfs_cmd_size != sizeof(zfs_cmd_t)) { 6099 error = SET_ERROR(EINVAL); 6100 goto out; 6101 } 6102 break; 6103 case ZFS_IOCVER_ZCMD: 6104 if (zc_iocparm->zfs_cmd_size > sizeof(zfs_cmd_t) || 6105 zc_iocparm->zfs_cmd_size < sizeof(zfs_cmd_zcmd_t)) { 6106 error = SET_ERROR(EFAULT); 6107 goto out; 6108 } 6109 compat = B_TRUE; 6110 cflag = ZFS_CMD_COMPAT_ZCMD; 6111 break; 6112 default: 6113 error = SET_ERROR(EINVAL); 6114 goto out; 6115 /* NOTREACHED */ 6116 } 6117 6118 if (compat) { 6119 ASSERT(sizeof(zfs_cmd_t) >= zc_iocparm->zfs_cmd_size); 6120 compat_zc = kmem_zalloc(sizeof(zfs_cmd_t), KM_SLEEP); 6121 bzero(compat_zc, sizeof(zfs_cmd_t)); 6122 6123 error = ddi_copyin((void *)(uintptr_t)zc_iocparm->zfs_cmd, 6124 compat_zc, zc_iocparm->zfs_cmd_size, flag); 6125 if (error != 0) { 6126 error = SET_ERROR(EFAULT); 6127 goto out; 6128 } 6129 } else { 6130 error = ddi_copyin((void *)(uintptr_t)zc_iocparm->zfs_cmd, 6131 zc, zc_iocparm->zfs_cmd_size, flag); 6132 if (error != 0) { 6133 error = SET_ERROR(EFAULT); 6134 goto out; 6135 } 6136 } 6137 } 6138 6139 if (compat) { 6140 if (newioc) { 6141 ASSERT(compat_zc != NULL); 6142 zfs_cmd_compat_get(zc, compat_zc, cflag); 6143 } else { 6144 ASSERT(compat_zc == NULL); 6145 zfs_cmd_compat_get(zc, arg, cflag); 6146 } 6147 oldvecnum = vecnum; 6148 error = zfs_ioctl_compat_pre(zc, &vecnum, cflag); 6149 if (error != 0) 6150 goto out; 6151 if (oldvecnum != vecnum) 6152 vec = &zfs_ioc_vec[vecnum]; 6153 } 6154#endif /* !illumos */ 6155 6156 zc->zc_iflags = flag & FKIOCTL; 6157 if (zc->zc_nvlist_src_size != 0) { 6158 error = get_nvlist(zc->zc_nvlist_src, zc->zc_nvlist_src_size, 6159 zc->zc_iflags, &innvl); 6160 if (error != 0) 6161 goto out; 6162 } 6163 6164 /* rewrite innvl for backwards compatibility */ 6165 if (compat) 6166 innvl = zfs_ioctl_compat_innvl(zc, innvl, vecnum, cflag); 6167 6168 /* 6169 * Ensure that all pool/dataset names are valid before we pass down to 6170 * the lower layers. 6171 */ 6172 zc->zc_name[sizeof (zc->zc_name) - 1] = '\0'; 6173 switch (vec->zvec_namecheck) { 6174 case POOL_NAME: 6175 if (pool_namecheck(zc->zc_name, NULL, NULL) != 0) 6176 error = SET_ERROR(EINVAL); 6177 else 6178 error = pool_status_check(zc->zc_name, 6179 vec->zvec_namecheck, vec->zvec_pool_check); 6180 break; 6181 6182 case DATASET_NAME: 6183 if (dataset_namecheck(zc->zc_name, NULL, NULL) != 0) 6184 error = SET_ERROR(EINVAL); 6185 else 6186 error = pool_status_check(zc->zc_name, 6187 vec->zvec_namecheck, vec->zvec_pool_check); 6188 break; 6189 6190 case NO_NAME: 6191 break; 6192 } 6193 6194 if (error == 0 && !(flag & FKIOCTL)) 6195 error = vec->zvec_secpolicy(zc, innvl, cr); 6196 6197 if (error != 0) 6198 goto out; 6199 6200 /* legacy ioctls can modify zc_name */ 6201 len = strcspn(zc->zc_name, "/@#") + 1; 6202 saved_poolname = kmem_alloc(len, KM_SLEEP); 6203 (void) strlcpy(saved_poolname, zc->zc_name, len); 6204 6205 if (vec->zvec_func != NULL) { 6206 nvlist_t *outnvl; 6207 int puterror = 0; 6208 spa_t *spa; 6209 nvlist_t *lognv = NULL; 6210 6211 ASSERT(vec->zvec_legacy_func == NULL); 6212 6213 /* 6214 * Add the innvl to the lognv before calling the func, 6215 * in case the func changes the innvl. 6216 */ 6217 if (vec->zvec_allow_log) { 6218 lognv = fnvlist_alloc(); 6219 fnvlist_add_string(lognv, ZPOOL_HIST_IOCTL, 6220 vec->zvec_name); 6221 if (!nvlist_empty(innvl)) { 6222 fnvlist_add_nvlist(lognv, ZPOOL_HIST_INPUT_NVL, 6223 innvl); 6224 } 6225 } 6226 6227 outnvl = fnvlist_alloc(); 6228 error = vec->zvec_func(zc->zc_name, innvl, outnvl); 6229 6230 if (error == 0 && vec->zvec_allow_log && 6231 spa_open(zc->zc_name, &spa, FTAG) == 0) { 6232 if (!nvlist_empty(outnvl)) { 6233 fnvlist_add_nvlist(lognv, ZPOOL_HIST_OUTPUT_NVL, 6234 outnvl); 6235 } 6236 (void) spa_history_log_nvl(spa, lognv); 6237 spa_close(spa, FTAG); 6238 } 6239 fnvlist_free(lognv); 6240 6241 /* rewrite outnvl for backwards compatibility */ 6242 if (compat) 6243 outnvl = zfs_ioctl_compat_outnvl(zc, outnvl, vecnum, 6244 cflag); 6245 6246 if (!nvlist_empty(outnvl) || zc->zc_nvlist_dst_size != 0) { 6247 int smusherror = 0; 6248 if (vec->zvec_smush_outnvlist) { 6249 smusherror = nvlist_smush(outnvl, 6250 zc->zc_nvlist_dst_size); 6251 } 6252 if (smusherror == 0) 6253 puterror = put_nvlist(zc, outnvl); 6254 } 6255 6256 if (puterror != 0) 6257 error = puterror; 6258 6259 nvlist_free(outnvl); 6260 } else { 6261 error = vec->zvec_legacy_func(zc); 6262 } 6263 6264out: 6265 nvlist_free(innvl); 6266 6267#ifdef illumos 6268 rc = ddi_copyout(zc, (void *)arg, sizeof (zfs_cmd_t), flag); 6269 if (error == 0 && rc != 0) 6270 error = SET_ERROR(EFAULT); 6271#else 6272 if (compat) { 6273 zfs_ioctl_compat_post(zc, cmd, cflag); 6274 if (newioc) { 6275 ASSERT(compat_zc != NULL); 6276 ASSERT(sizeof(zfs_cmd_t) >= zc_iocparm->zfs_cmd_size); 6277 6278 zfs_cmd_compat_put(zc, compat_zc, vecnum, cflag); 6279 rc = ddi_copyout(compat_zc, 6280 (void *)(uintptr_t)zc_iocparm->zfs_cmd, 6281 zc_iocparm->zfs_cmd_size, flag); 6282 if (error == 0 && rc != 0) 6283 error = SET_ERROR(EFAULT); 6284 kmem_free(compat_zc, sizeof (zfs_cmd_t)); 6285 } else { 6286 zfs_cmd_compat_put(zc, arg, vecnum, cflag); 6287 } 6288 } else { 6289 ASSERT(newioc); 6290 6291 rc = ddi_copyout(zc, (void *)(uintptr_t)zc_iocparm->zfs_cmd, 6292 sizeof (zfs_cmd_t), flag); 6293 if (error == 0 && rc != 0) 6294 error = SET_ERROR(EFAULT); 6295 } 6296#endif 6297 if (error == 0 && vec->zvec_allow_log) { 6298 char *s = tsd_get(zfs_allow_log_key); 6299 if (s != NULL) 6300 strfree(s); 6301 (void) tsd_set(zfs_allow_log_key, saved_poolname); 6302 } else { 6303 if (saved_poolname != NULL) 6304 strfree(saved_poolname); 6305 } 6306 6307 kmem_free(zc, sizeof (zfs_cmd_t)); 6308 return (error); 6309} 6310 6311#ifdef illumos 6312static int 6313zfs_attach(dev_info_t *dip, ddi_attach_cmd_t cmd) 6314{ 6315 if (cmd != DDI_ATTACH) 6316 return (DDI_FAILURE); 6317 6318 if (ddi_create_minor_node(dip, "zfs", S_IFCHR, 0, 6319 DDI_PSEUDO, 0) == DDI_FAILURE) 6320 return (DDI_FAILURE); 6321 6322 zfs_dip = dip; 6323 6324 ddi_report_dev(dip); 6325 6326 return (DDI_SUCCESS); 6327} 6328 6329static int 6330zfs_detach(dev_info_t *dip, ddi_detach_cmd_t cmd) 6331{ 6332 if (spa_busy() || zfs_busy() || zvol_busy()) 6333 return (DDI_FAILURE); 6334 6335 if (cmd != DDI_DETACH) 6336 return (DDI_FAILURE); 6337 6338 zfs_dip = NULL; 6339 6340 ddi_prop_remove_all(dip); 6341 ddi_remove_minor_node(dip, NULL); 6342 6343 return (DDI_SUCCESS); 6344} 6345 6346/*ARGSUSED*/ 6347static int 6348zfs_info(dev_info_t *dip, ddi_info_cmd_t infocmd, void *arg, void **result) 6349{ 6350 switch (infocmd) { 6351 case DDI_INFO_DEVT2DEVINFO: 6352 *result = zfs_dip; 6353 return (DDI_SUCCESS); 6354 6355 case DDI_INFO_DEVT2INSTANCE: 6356 *result = (void *)0; 6357 return (DDI_SUCCESS); 6358 } 6359 6360 return (DDI_FAILURE); 6361} 6362#endif /* illumos */ 6363 6364/* 6365 * OK, so this is a little weird. 6366 * 6367 * /dev/zfs is the control node, i.e. minor 0. 6368 * /dev/zvol/[r]dsk/pool/dataset are the zvols, minor > 0. 6369 * 6370 * /dev/zfs has basically nothing to do except serve up ioctls, 6371 * so most of the standard driver entry points are in zvol.c. 6372 */ 6373#ifdef illumos 6374static struct cb_ops zfs_cb_ops = { 6375 zfsdev_open, /* open */ 6376 zfsdev_close, /* close */ 6377 zvol_strategy, /* strategy */ 6378 nodev, /* print */ 6379 zvol_dump, /* dump */ 6380 zvol_read, /* read */ 6381 zvol_write, /* write */ 6382 zfsdev_ioctl, /* ioctl */ 6383 nodev, /* devmap */ 6384 nodev, /* mmap */ 6385 nodev, /* segmap */ 6386 nochpoll, /* poll */ 6387 ddi_prop_op, /* prop_op */ 6388 NULL, /* streamtab */ 6389 D_NEW | D_MP | D_64BIT, /* Driver compatibility flag */ 6390 CB_REV, /* version */ 6391 nodev, /* async read */ 6392 nodev, /* async write */ 6393}; 6394 6395static struct dev_ops zfs_dev_ops = { 6396 DEVO_REV, /* version */ 6397 0, /* refcnt */ 6398 zfs_info, /* info */ 6399 nulldev, /* identify */ 6400 nulldev, /* probe */ 6401 zfs_attach, /* attach */ 6402 zfs_detach, /* detach */ 6403 nodev, /* reset */ 6404 &zfs_cb_ops, /* driver operations */ 6405 NULL, /* no bus operations */ 6406 NULL, /* power */ 6407 ddi_quiesce_not_needed, /* quiesce */ 6408}; 6409 6410static struct modldrv zfs_modldrv = { 6411 &mod_driverops, 6412 "ZFS storage pool", 6413 &zfs_dev_ops 6414}; 6415 6416static struct modlinkage modlinkage = { 6417 MODREV_1, 6418 (void *)&zfs_modlfs, 6419 (void *)&zfs_modldrv, 6420 NULL 6421}; 6422#endif /* illumos */ 6423 6424static struct cdevsw zfs_cdevsw = { 6425 .d_version = D_VERSION, 6426 .d_open = zfsdev_open, 6427 .d_ioctl = zfsdev_ioctl, 6428 .d_name = ZFS_DEV_NAME 6429}; 6430 6431static void 6432zfs_allow_log_destroy(void *arg) 6433{ 6434 char *poolname = arg; 6435 strfree(poolname); 6436} 6437 6438static void 6439zfsdev_init(void) 6440{ 6441 zfsdev = make_dev(&zfs_cdevsw, 0x0, UID_ROOT, GID_OPERATOR, 0666, 6442 ZFS_DEV_NAME); 6443} 6444 6445static void 6446zfsdev_fini(void) 6447{ 6448 if (zfsdev != NULL) 6449 destroy_dev(zfsdev); 6450} 6451 6452static struct root_hold_token *zfs_root_token; 6453struct proc *zfsproc; 6454 6455#ifdef illumos 6456int 6457_init(void) 6458{ 6459 int error; 6460 6461 spa_init(FREAD | FWRITE); 6462 zfs_init(); 6463 zvol_init(); 6464 zfs_ioctl_init(); 6465 6466 if ((error = mod_install(&modlinkage)) != 0) { 6467 zvol_fini(); 6468 zfs_fini(); 6469 spa_fini(); 6470 return (error); 6471 } 6472 6473 tsd_create(&zfs_fsyncer_key, NULL); 6474 tsd_create(&rrw_tsd_key, rrw_tsd_destroy); 6475 tsd_create(&zfs_allow_log_key, zfs_allow_log_destroy); 6476 6477 error = ldi_ident_from_mod(&modlinkage, &zfs_li); 6478 ASSERT(error == 0); 6479 mutex_init(&zfs_share_lock, NULL, MUTEX_DEFAULT, NULL); 6480 6481 return (0); 6482} 6483 6484int 6485_fini(void) 6486{ 6487 int error; 6488 6489 if (spa_busy() || zfs_busy() || zvol_busy() || zio_injection_enabled) 6490 return (SET_ERROR(EBUSY)); 6491 6492 if ((error = mod_remove(&modlinkage)) != 0) 6493 return (error); 6494 6495 zvol_fini(); 6496 zfs_fini(); 6497 spa_fini(); 6498 if (zfs_nfsshare_inited) 6499 (void) ddi_modclose(nfs_mod); 6500 if (zfs_smbshare_inited) 6501 (void) ddi_modclose(smbsrv_mod); 6502 if (zfs_nfsshare_inited || zfs_smbshare_inited) 6503 (void) ddi_modclose(sharefs_mod); 6504 6505 tsd_destroy(&zfs_fsyncer_key); 6506 ldi_ident_release(zfs_li); 6507 zfs_li = NULL; 6508 mutex_destroy(&zfs_share_lock); 6509 6510 return (error); 6511} 6512 6513int 6514_info(struct modinfo *modinfop) 6515{ 6516 return (mod_info(&modlinkage, modinfop)); 6517} 6518#endif /* illumos */ 6519 6520static int zfs__init(void); 6521static int zfs__fini(void); 6522static void zfs_shutdown(void *, int); 6523 6524static eventhandler_tag zfs_shutdown_event_tag; 6525 6526#ifdef __FreeBSD__ 6527#define ZFS_MIN_KSTACK_PAGES 4 6528#endif 6529 6530int 6531zfs__init(void) 6532{ 6533 6534#ifdef __FreeBSD__ 6535#if KSTACK_PAGES < ZFS_MIN_KSTACK_PAGES 6536 printf("ZFS NOTICE: KSTACK_PAGES is %d which could result in stack " 6537 "overflow panic!\nPlease consider adding " 6538 "'options KSTACK_PAGES=%d' to your kernel config\n", KSTACK_PAGES, 6539 ZFS_MIN_KSTACK_PAGES); 6540#endif 6541#endif 6542 zfs_root_token = root_mount_hold("ZFS"); 6543 6544 mutex_init(&zfs_share_lock, NULL, MUTEX_DEFAULT, NULL); 6545 6546 spa_init(FREAD | FWRITE); 6547 zfs_init(); 6548 zvol_init(); 6549 zfs_ioctl_init(); 6550 6551 tsd_create(&zfs_fsyncer_key, NULL); 6552 tsd_create(&rrw_tsd_key, rrw_tsd_destroy); 6553 tsd_create(&zfs_allow_log_key, zfs_allow_log_destroy); 6554 6555 printf("ZFS storage pool version: features support (" SPA_VERSION_STRING ")\n"); 6556 root_mount_rel(zfs_root_token); 6557 6558 zfsdev_init(); 6559 6560 return (0); 6561} 6562 6563int 6564zfs__fini(void) 6565{ 6566 if (spa_busy() || zfs_busy() || zvol_busy() || 6567 zio_injection_enabled) { 6568 return (EBUSY); 6569 } 6570 6571 zfsdev_fini(); 6572 zvol_fini(); 6573 zfs_fini(); 6574 spa_fini(); 6575 6576 tsd_destroy(&zfs_fsyncer_key); 6577 tsd_destroy(&rrw_tsd_key); 6578 tsd_destroy(&zfs_allow_log_key); 6579 6580 mutex_destroy(&zfs_share_lock); 6581 6582 return (0); 6583} 6584 6585static void 6586zfs_shutdown(void *arg __unused, int howto __unused) 6587{ 6588 6589 /* 6590 * ZFS fini routines can not properly work in a panic-ed system. 6591 */ 6592 if (panicstr == NULL) 6593 (void)zfs__fini(); 6594} 6595 6596 6597static int 6598zfs_modevent(module_t mod, int type, void *unused __unused) 6599{ 6600 int err; 6601 6602 switch (type) { 6603 case MOD_LOAD: 6604 err = zfs__init(); 6605 if (err == 0) 6606 zfs_shutdown_event_tag = EVENTHANDLER_REGISTER( 6607 shutdown_post_sync, zfs_shutdown, NULL, 6608 SHUTDOWN_PRI_FIRST); 6609 return (err); 6610 case MOD_UNLOAD: 6611 err = zfs__fini(); 6612 if (err == 0 && zfs_shutdown_event_tag != NULL) 6613 EVENTHANDLER_DEREGISTER(shutdown_post_sync, 6614 zfs_shutdown_event_tag); 6615 return (err); 6616 case MOD_SHUTDOWN: 6617 return (0); 6618 default: 6619 break; 6620 } 6621 return (EOPNOTSUPP); 6622} 6623 6624static moduledata_t zfs_mod = { 6625 "zfsctrl", 6626 zfs_modevent, 6627 0 6628}; 6629DECLARE_MODULE(zfsctrl, zfs_mod, SI_SUB_VFS, SI_ORDER_ANY); 6630MODULE_VERSION(zfsctrl, 1); 6631MODULE_DEPEND(zfsctrl, opensolaris, 1, 1, 1); 6632MODULE_DEPEND(zfsctrl, krpc, 1, 1, 1); 6633MODULE_DEPEND(zfsctrl, acl_nfs4, 1, 1, 1); 6634