1 /* 2 * CDDL HEADER START 3 * 4 * The contents of this file are subject to the terms of the 5 * Common Development and Distribution License (the "License"). 6 * You may not use this file except in compliance with the License. 7 * 8 * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE 9 * or http://www.opensolaris.org/os/licensing. 10 * See the License for the specific language governing permissions 11 * and limitations under the License. 12 * 13 * When distributing Covered Code, include this CDDL HEADER in each 14 * file and include the License file at usr/src/OPENSOLARIS.LICENSE. 15 * If applicable, add the following below this CDDL HEADER, with the 16 * fields enclosed by brackets "[]" replaced with your own identifying 17 * information: Portions Copyright [yyyy] [name of copyright owner] 18 * 19 * CDDL HEADER END 20 */ 21 22 /* 23 * Copyright (c) 2005, 2010, Oracle and/or its affiliates. All rights reserved. 24 * Copyright (c) 2011-2012 Pawel Jakub Dawidek. All rights reserved. 25 * Copyright 2013 Martin Matuska <mm@FreeBSD.org>. All rights reserved. 26 * Copyright 2014 Xin Li <delphij@FreeBSD.org>. All rights reserved. 27 * Copyright 2015, OmniTI Computer Consulting, Inc. All rights reserved. 28 * Copyright 2015 Nexenta Systems, Inc. All rights reserved. 29 * Copyright (c) 2014, 2016 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 * Copyright (c) 2014 Integros [integros.com] 34 * Copyright 2016 Toomas Soome <tsoome@me.com> 35 */ 36 37 /* 38 * ZFS ioctls. 39 * 40 * This file handles the ioctls to /dev/zfs, used for configuring ZFS storage 41 * pools and filesystems, e.g. with /sbin/zfs and /sbin/zpool. 42 * 43 * There are two ways that we handle ioctls: the legacy way where almost 44 * all of the logic is in the ioctl callback, and the new way where most 45 * of the marshalling is handled in the common entry point, zfsdev_ioctl(). 46 * 47 * Non-legacy ioctls should be registered by calling 48 * zfs_ioctl_register() from zfs_ioctl_init(). The ioctl is invoked 49 * from userland by lzc_ioctl(). 50 * 51 * The registration arguments are as follows: 52 * 53 * const char *name 54 * The name of the ioctl. This is used for history logging. If the 55 * ioctl returns successfully (the callback returns 0), and allow_log 56 * is true, then a history log entry will be recorded with the input & 57 * output nvlists. The log entry can be printed with "zpool history -i". 58 * 59 * zfs_ioc_t ioc 60 * The ioctl request number, which userland will pass to ioctl(2). 61 * The ioctl numbers can change from release to release, because 62 * the caller (libzfs) must be matched to the kernel. 63 * 64 * zfs_secpolicy_func_t *secpolicy 65 * This function will be called before the zfs_ioc_func_t, to 66 * determine if this operation is permitted. It should return EPERM 67 * on failure, and 0 on success. Checks include determining if the 68 * dataset is visible in this zone, and if the user has either all 69 * zfs privileges in the zone (SYS_MOUNT), or has been granted permission 70 * to do this operation on this dataset with "zfs allow". 71 * 72 * zfs_ioc_namecheck_t namecheck 73 * This specifies what to expect in the zfs_cmd_t:zc_name -- a pool 74 * name, a dataset name, or nothing. If the name is not well-formed, 75 * the ioctl will fail and the callback will not be called. 76 * Therefore, the callback can assume that the name is well-formed 77 * (e.g. is null-terminated, doesn't have more than one '@' character, 78 * doesn't have invalid characters). 79 * 80 * zfs_ioc_poolcheck_t pool_check 81 * This specifies requirements on the pool state. If the pool does 82 * not meet them (is suspended or is readonly), the ioctl will fail 83 * and the callback will not be called. If any checks are specified 84 * (i.e. it is not POOL_CHECK_NONE), namecheck must not be NO_NAME. 85 * Multiple checks can be or-ed together (e.g. POOL_CHECK_SUSPENDED | 86 * POOL_CHECK_READONLY). 87 * 88 * boolean_t smush_outnvlist 89 * If smush_outnvlist is true, then the output is presumed to be a 90 * list of errors, and it will be "smushed" down to fit into the 91 * caller's buffer, by removing some entries and replacing them with a 92 * single "N_MORE_ERRORS" entry indicating how many were removed. See 93 * nvlist_smush() for details. If smush_outnvlist is false, and the 94 * outnvlist does not fit into the userland-provided buffer, then the 95 * ioctl will fail with ENOMEM. 96 * 97 * zfs_ioc_func_t *func 98 * The callback function that will perform the operation. 99 * 100 * The callback should return 0 on success, or an error number on 101 * failure. If the function fails, the userland ioctl will return -1, 102 * and errno will be set to the callback's return value. The callback 103 * will be called with the following arguments: 104 * 105 * const char *name 106 * The name of the pool or dataset to operate on, from 107 * zfs_cmd_t:zc_name. The 'namecheck' argument specifies the 108 * expected type (pool, dataset, or none). 109 * 110 * nvlist_t *innvl 111 * The input nvlist, deserialized from zfs_cmd_t:zc_nvlist_src. Or 112 * NULL if no input nvlist was provided. Changes to this nvlist are 113 * ignored. If the input nvlist could not be deserialized, the 114 * ioctl will fail and the callback will not be called. 115 * 116 * nvlist_t *outnvl 117 * The output nvlist, initially empty. The callback can fill it in, 118 * and it will be returned to userland by serializing it into 119 * zfs_cmd_t:zc_nvlist_dst. If it is non-empty, and serialization 120 * fails (e.g. because the caller didn't supply a large enough 121 * buffer), then the overall ioctl will fail. See the 122 * 'smush_nvlist' argument above for additional behaviors. 123 * 124 * There are two typical uses of the output nvlist: 125 * - To return state, e.g. property values. In this case, 126 * smush_outnvlist should be false. If the buffer was not large 127 * enough, the caller will reallocate a larger buffer and try 128 * the ioctl again. 129 * 130 * - To return multiple errors from an ioctl which makes on-disk 131 * changes. In this case, smush_outnvlist should be true. 132 * Ioctls which make on-disk modifications should generally not 133 * use the outnvl if they succeed, because the caller can not 134 * distinguish between the operation failing, and 135 * deserialization failing. 136 */ 137 #ifdef __FreeBSD__ 138 #include "opt_kstack_pages.h" 139 #endif 140 141 #include <sys/types.h> 142 #include <sys/param.h> 143 #include <sys/systm.h> 144 #include <sys/open.h> 145 #include <sys/conf.h> 146 #include <sys/kernel.h> 147 #include <sys/lock.h> 148 #include <sys/malloc.h> 149 #include <sys/mutex.h> 150 #include <sys/proc.h> 151 #include <sys/errno.h> 152 #include <sys/uio.h> 153 #include <sys/buf.h> 154 #include <sys/file.h> 155 #include <sys/kmem.h> 156 #include <sys/conf.h> 157 #include <sys/cmn_err.h> 158 #include <sys/stat.h> 159 #include <sys/zfs_ioctl.h> 160 #include <sys/zfs_vfsops.h> 161 #include <sys/zfs_znode.h> 162 #include <sys/zap.h> 163 #include <sys/spa.h> 164 #include <sys/spa_impl.h> 165 #include <sys/vdev.h> 166 #include <sys/dmu.h> 167 #include <sys/dsl_dir.h> 168 #include <sys/dsl_dataset.h> 169 #include <sys/dsl_prop.h> 170 #include <sys/dsl_deleg.h> 171 #include <sys/dmu_objset.h> 172 #include <sys/dmu_impl.h> 173 #include <sys/dmu_tx.h> 174 #include <sys/sunddi.h> 175 #include <sys/policy.h> 176 #include <sys/zone.h> 177 #include <sys/nvpair.h> 178 #include <sys/mount.h> 179 #ifdef __FreeBSD__ 180 #include <sys/taskqueue.h> 181 #endif 182 #ifdef __NetBSD__ 183 #include <sys/callb.h> 184 #include <sys/taskq.h> 185 #endif 186 #include <sys/sdt.h> 187 #include <sys/varargs.h> 188 #include <sys/fs/zfs.h> 189 #include <sys/zfs_ctldir.h> 190 #include <sys/zfs_dir.h> 191 #include <sys/zfs_onexit.h> 192 #include <sys/zvol.h> 193 #include <sys/dsl_scan.h> 194 #include <sys/dmu_objset.h> 195 #include <sys/dmu_send.h> 196 #include <sys/dsl_destroy.h> 197 #include <sys/dsl_bookmark.h> 198 #include <sys/dsl_userhold.h> 199 #include <sys/zfeature.h> 200 #include <sys/zio_checksum.h> 201 202 #include "zfs_namecheck.h" 203 #include "zfs_prop.h" 204 #include "zfs_deleg.h" 205 #include "zfs_comutil.h" 206 #include "zfs_ioctl_compat.h" 207 208 #ifdef __FreeBSD__ 209 CTASSERT(sizeof(zfs_cmd_t) < IOCPARM_MAX); 210 static struct cdev *zfsdev; 211 #endif 212 213 #ifdef __NetBSD__ 214 static dev_info_t __zfs_devinfo = { -1, -1 }; 215 dev_info_t *zfs_dip = &__zfs_devinfo; 216 217 #define zfs_init() /* nothing */ 218 #define zfs_fini() /* nothing */ 219 220 #define vfs_busy(x, y) vfs_busy(x) 221 #define vfs_rel(x) vfs_rele(x) 222 #endif 223 224 uint_t zfs_fsyncer_key; 225 extern uint_t rrw_tsd_key; 226 static uint_t zfs_allow_log_key; 227 extern uint_t zfs_geom_probe_vdev_key; 228 229 typedef int zfs_ioc_legacy_func_t(zfs_cmd_t *); 230 typedef int zfs_ioc_func_t(const char *, nvlist_t *, nvlist_t *); 231 typedef int zfs_secpolicy_func_t(zfs_cmd_t *, nvlist_t *, cred_t *); 232 233 typedef enum { 234 NO_NAME, 235 POOL_NAME, 236 DATASET_NAME 237 } zfs_ioc_namecheck_t; 238 239 typedef enum { 240 POOL_CHECK_NONE = 1 << 0, 241 POOL_CHECK_SUSPENDED = 1 << 1, 242 POOL_CHECK_READONLY = 1 << 2, 243 } zfs_ioc_poolcheck_t; 244 245 typedef struct zfs_ioc_vec { 246 zfs_ioc_legacy_func_t *zvec_legacy_func; 247 zfs_ioc_func_t *zvec_func; 248 zfs_secpolicy_func_t *zvec_secpolicy; 249 zfs_ioc_namecheck_t zvec_namecheck; 250 boolean_t zvec_allow_log; 251 zfs_ioc_poolcheck_t zvec_pool_check; 252 boolean_t zvec_smush_outnvlist; 253 const char *zvec_name; 254 } zfs_ioc_vec_t; 255 256 /* This array is indexed by zfs_userquota_prop_t */ 257 static const char *userquota_perms[] = { 258 ZFS_DELEG_PERM_USERUSED, 259 ZFS_DELEG_PERM_USERQUOTA, 260 ZFS_DELEG_PERM_GROUPUSED, 261 ZFS_DELEG_PERM_GROUPQUOTA, 262 }; 263 264 static int zfs_ioc_userspace_upgrade(zfs_cmd_t *zc); 265 static int zfs_check_settable(const char *name, nvpair_t *property, 266 cred_t *cr); 267 static int zfs_check_clearable(char *dataset, nvlist_t *props, 268 nvlist_t **errors); 269 static int zfs_fill_zplprops_root(uint64_t, nvlist_t *, nvlist_t *, 270 boolean_t *); 271 int zfs_set_prop_nvlist(const char *, zprop_source_t, nvlist_t *, nvlist_t *); 272 static int get_nvlist(uint64_t nvl, uint64_t size, int iflag, nvlist_t **nvp); 273 274 #ifdef __FreeBSD__ 275 static void zfsdev_close(void *data); 276 #endif 277 278 static int zfs_prop_activate_feature(spa_t *spa, spa_feature_t feature); 279 280 /* _NOTE(PRINTFLIKE(4)) - this is printf-like, but lint is too whiney */ 281 void 282 __dprintf(const char *file, const char *func, int line, const char *fmt, ...) 283 { 284 const char *newfile; 285 char buf[512]; 286 va_list adx; 287 288 /* 289 * Get rid of annoying "../common/" prefix to filename. 290 */ 291 newfile = strrchr(file, '/'); 292 if (newfile != NULL) { 293 newfile = newfile + 1; /* Get rid of leading / */ 294 } else { 295 newfile = file; 296 } 297 298 va_start(adx, fmt); 299 (void) vsnprintf(buf, sizeof (buf), fmt, adx); 300 va_end(adx); 301 302 /* 303 * To get this data, use the zfs-dprintf probe as so: 304 * dtrace -q -n 'zfs-dprintf \ 305 * /stringof(arg0) == "dbuf.c"/ \ 306 * {printf("%s: %s", stringof(arg1), stringof(arg3))}' 307 * arg0 = file name 308 * arg1 = function name 309 * arg2 = line number 310 * arg3 = message 311 */ 312 DTRACE_PROBE4(zfs__dprintf, 313 char *, newfile, char *, func, int, line, char *, buf); 314 } 315 316 static void 317 history_str_free(char *buf) 318 { 319 kmem_free(buf, HIS_MAX_RECORD_LEN); 320 } 321 322 static char * 323 history_str_get(zfs_cmd_t *zc) 324 { 325 char *buf; 326 327 if (zc->zc_history == 0) 328 return (NULL); 329 330 buf = kmem_alloc(HIS_MAX_RECORD_LEN, KM_SLEEP); 331 if (copyinstr((void *)(uintptr_t)zc->zc_history, 332 buf, HIS_MAX_RECORD_LEN, NULL) != 0) { 333 history_str_free(buf); 334 return (NULL); 335 } 336 337 buf[HIS_MAX_RECORD_LEN -1] = '\0'; 338 339 return (buf); 340 } 341 342 /* 343 * Check to see if the named dataset is currently defined as bootable 344 */ 345 static boolean_t 346 zfs_is_bootfs(const char *name) 347 { 348 objset_t *os; 349 350 if (dmu_objset_hold(name, FTAG, &os) == 0) { 351 boolean_t ret; 352 ret = (dmu_objset_id(os) == spa_bootfs(dmu_objset_spa(os))); 353 dmu_objset_rele(os, FTAG); 354 return (ret); 355 } 356 return (B_FALSE); 357 } 358 359 /* 360 * Return non-zero if the spa version is less than requested version. 361 */ 362 static int 363 zfs_earlier_version(const char *name, int version) 364 { 365 spa_t *spa; 366 367 if (spa_open(name, &spa, FTAG) == 0) { 368 if (spa_version(spa) < version) { 369 spa_close(spa, FTAG); 370 return (1); 371 } 372 spa_close(spa, FTAG); 373 } 374 return (0); 375 } 376 377 /* 378 * Return TRUE if the ZPL version is less than requested version. 379 */ 380 static boolean_t 381 zpl_earlier_version(const char *name, int version) 382 { 383 objset_t *os; 384 boolean_t rc = B_TRUE; 385 386 if (dmu_objset_hold(name, FTAG, &os) == 0) { 387 uint64_t zplversion; 388 389 if (dmu_objset_type(os) != DMU_OST_ZFS) { 390 dmu_objset_rele(os, FTAG); 391 return (B_TRUE); 392 } 393 /* XXX reading from non-owned objset */ 394 if (zfs_get_zplprop(os, ZFS_PROP_VERSION, &zplversion) == 0) 395 rc = zplversion < version; 396 dmu_objset_rele(os, FTAG); 397 } 398 return (rc); 399 } 400 401 static void 402 zfs_log_history(zfs_cmd_t *zc) 403 { 404 spa_t *spa; 405 char *buf; 406 407 if ((buf = history_str_get(zc)) == NULL) 408 return; 409 410 if (spa_open(zc->zc_name, &spa, FTAG) == 0) { 411 if (spa_version(spa) >= SPA_VERSION_ZPOOL_HISTORY) 412 (void) spa_history_log(spa, buf); 413 spa_close(spa, FTAG); 414 } 415 history_str_free(buf); 416 } 417 418 /* 419 * Policy for top-level read operations (list pools). Requires no privileges, 420 * and can be used in the local zone, as there is no associated dataset. 421 */ 422 /* ARGSUSED */ 423 static int 424 zfs_secpolicy_none(zfs_cmd_t *zc, nvlist_t *innvl, cred_t *cr) 425 { 426 return (0); 427 } 428 429 /* 430 * Policy for dataset read operations (list children, get statistics). Requires 431 * no privileges, but must be visible in the local zone. 432 */ 433 /* ARGSUSED */ 434 static int 435 zfs_secpolicy_read(zfs_cmd_t *zc, nvlist_t *innvl, cred_t *cr) 436 { 437 if (INGLOBALZONE(curthread) || 438 zone_dataset_visible(zc->zc_name, NULL)) 439 return (0); 440 441 return (SET_ERROR(ENOENT)); 442 } 443 444 static int 445 zfs_dozonecheck_impl(const char *dataset, uint64_t zoned, cred_t *cr) 446 { 447 int writable = 1; 448 449 /* 450 * The dataset must be visible by this zone -- check this first 451 * so they don't see EPERM on something they shouldn't know about. 452 */ 453 if (!INGLOBALZONE(curthread) && 454 !zone_dataset_visible(dataset, &writable)) 455 return (SET_ERROR(ENOENT)); 456 457 if (INGLOBALZONE(curthread)) { 458 /* 459 * If the fs is zoned, only root can access it from the 460 * global zone. 461 */ 462 if (secpolicy_zfs(cr) && zoned) 463 return (SET_ERROR(EPERM)); 464 } else { 465 /* 466 * If we are in a local zone, the 'zoned' property must be set. 467 */ 468 if (!zoned) 469 return (SET_ERROR(EPERM)); 470 471 /* must be writable by this zone */ 472 if (!writable) 473 return (SET_ERROR(EPERM)); 474 } 475 return (0); 476 } 477 478 static int 479 zfs_dozonecheck(const char *dataset, cred_t *cr) 480 { 481 uint64_t zoned; 482 483 #ifdef __NetBSD__ 484 zoned = 0; 485 #else 486 if (dsl_prop_get_integer(dataset, "jailed", &zoned, NULL)) 487 return (SET_ERROR(ENOENT)); 488 #endif 489 490 return (zfs_dozonecheck_impl(dataset, zoned, cr)); 491 } 492 493 static int 494 zfs_dozonecheck_ds(const char *dataset, dsl_dataset_t *ds, cred_t *cr) 495 { 496 uint64_t zoned; 497 498 #ifdef __NetBSD__ 499 zoned = 0; 500 #else 501 if (dsl_prop_get_int_ds(ds, "jailed", &zoned)) 502 return (SET_ERROR(ENOENT)); 503 #endif 504 505 return (zfs_dozonecheck_impl(dataset, zoned, cr)); 506 } 507 508 static int 509 zfs_secpolicy_write_perms_ds(const char *name, dsl_dataset_t *ds, 510 const char *perm, cred_t *cr) 511 { 512 int error; 513 514 error = zfs_dozonecheck_ds(name, ds, cr); 515 if (error == 0) { 516 error = secpolicy_zfs(cr); 517 if (error != 0) 518 error = dsl_deleg_access_impl(ds, perm, cr); 519 } 520 return (error); 521 } 522 523 static int 524 zfs_secpolicy_write_perms(const char *name, const char *perm, cred_t *cr) 525 { 526 int error; 527 dsl_dataset_t *ds; 528 dsl_pool_t *dp; 529 530 /* 531 * First do a quick check for root in the global zone, which 532 * is allowed to do all write_perms. This ensures that zfs_ioc_* 533 * will get to handle nonexistent datasets. 534 */ 535 if (INGLOBALZONE(curthread) && secpolicy_zfs(cr) == 0) 536 return (0); 537 538 error = dsl_pool_hold(name, FTAG, &dp); 539 if (error != 0) 540 return (error); 541 542 error = dsl_dataset_hold(dp, name, FTAG, &ds); 543 if (error != 0) { 544 dsl_pool_rele(dp, FTAG); 545 return (error); 546 } 547 548 error = zfs_secpolicy_write_perms_ds(name, ds, perm, cr); 549 550 dsl_dataset_rele(ds, FTAG); 551 dsl_pool_rele(dp, FTAG); 552 return (error); 553 } 554 555 #ifdef SECLABEL 556 /* 557 * Policy for setting the security label property. 558 * 559 * Returns 0 for success, non-zero for access and other errors. 560 */ 561 static int 562 zfs_set_slabel_policy(const char *name, char *strval, cred_t *cr) 563 { 564 char ds_hexsl[MAXNAMELEN]; 565 bslabel_t ds_sl, new_sl; 566 boolean_t new_default = FALSE; 567 uint64_t zoned; 568 int needed_priv = -1; 569 int error; 570 571 /* First get the existing dataset label. */ 572 error = dsl_prop_get(name, zfs_prop_to_name(ZFS_PROP_MLSLABEL), 573 1, sizeof (ds_hexsl), &ds_hexsl, NULL); 574 if (error != 0) 575 return (SET_ERROR(EPERM)); 576 577 if (strcasecmp(strval, ZFS_MLSLABEL_DEFAULT) == 0) 578 new_default = TRUE; 579 580 /* The label must be translatable */ 581 if (!new_default && (hexstr_to_label(strval, &new_sl) != 0)) 582 return (SET_ERROR(EINVAL)); 583 584 /* 585 * In a non-global zone, disallow attempts to set a label that 586 * doesn't match that of the zone; otherwise no other checks 587 * are needed. 588 */ 589 if (!INGLOBALZONE(curproc)) { 590 if (new_default || !blequal(&new_sl, CR_SL(CRED()))) 591 return (SET_ERROR(EPERM)); 592 return (0); 593 } 594 595 /* 596 * For global-zone datasets (i.e., those whose zoned property is 597 * "off", verify that the specified new label is valid for the 598 * global zone. 599 */ 600 if (dsl_prop_get_integer(name, 601 zfs_prop_to_name(ZFS_PROP_ZONED), &zoned, NULL)) 602 return (SET_ERROR(EPERM)); 603 if (!zoned) { 604 if (zfs_check_global_label(name, strval) != 0) 605 return (SET_ERROR(EPERM)); 606 } 607 608 /* 609 * If the existing dataset label is nondefault, check if the 610 * dataset is mounted (label cannot be changed while mounted). 611 * Get the zfsvfs; if there isn't one, then the dataset isn't 612 * mounted (or isn't a dataset, doesn't exist, ...). 613 */ 614 if (strcasecmp(ds_hexsl, ZFS_MLSLABEL_DEFAULT) != 0) { 615 objset_t *os; 616 static char *setsl_tag = "setsl_tag"; 617 618 /* 619 * Try to own the dataset; abort if there is any error, 620 * (e.g., already mounted, in use, or other error). 621 */ 622 error = dmu_objset_own(name, DMU_OST_ZFS, B_TRUE, 623 setsl_tag, &os); 624 if (error != 0) 625 return (SET_ERROR(EPERM)); 626 627 dmu_objset_disown(os, setsl_tag); 628 629 if (new_default) { 630 needed_priv = PRIV_FILE_DOWNGRADE_SL; 631 goto out_check; 632 } 633 634 if (hexstr_to_label(strval, &new_sl) != 0) 635 return (SET_ERROR(EPERM)); 636 637 if (blstrictdom(&ds_sl, &new_sl)) 638 needed_priv = PRIV_FILE_DOWNGRADE_SL; 639 else if (blstrictdom(&new_sl, &ds_sl)) 640 needed_priv = PRIV_FILE_UPGRADE_SL; 641 } else { 642 /* dataset currently has a default label */ 643 if (!new_default) 644 needed_priv = PRIV_FILE_UPGRADE_SL; 645 } 646 647 out_check: 648 if (needed_priv != -1) 649 return (PRIV_POLICY(cr, needed_priv, B_FALSE, EPERM, NULL)); 650 return (0); 651 } 652 #endif /* SECLABEL */ 653 654 static int 655 zfs_secpolicy_setprop(const char *dsname, zfs_prop_t prop, nvpair_t *propval, 656 cred_t *cr) 657 { 658 char *strval; 659 660 /* 661 * Check permissions for special properties. 662 */ 663 switch (prop) { 664 case ZFS_PROP_ZONED: 665 /* 666 * Disallow setting of 'zoned' from within a local zone. 667 */ 668 if (!INGLOBALZONE(curthread)) 669 return (SET_ERROR(EPERM)); 670 break; 671 672 case ZFS_PROP_QUOTA: 673 case ZFS_PROP_FILESYSTEM_LIMIT: 674 case ZFS_PROP_SNAPSHOT_LIMIT: 675 if (!INGLOBALZONE(curthread)) { 676 uint64_t zoned; 677 char setpoint[ZFS_MAX_DATASET_NAME_LEN]; 678 /* 679 * Unprivileged users are allowed to modify the 680 * limit on things *under* (ie. contained by) 681 * the thing they own. 682 */ 683 if (dsl_prop_get_integer(dsname, "jailed", &zoned, 684 setpoint)) 685 return (SET_ERROR(EPERM)); 686 if (!zoned || strlen(dsname) <= strlen(setpoint)) 687 return (SET_ERROR(EPERM)); 688 } 689 break; 690 691 case ZFS_PROP_MLSLABEL: 692 #ifdef SECLABEL 693 if (!is_system_labeled()) 694 return (SET_ERROR(EPERM)); 695 696 if (nvpair_value_string(propval, &strval) == 0) { 697 int err; 698 699 err = zfs_set_slabel_policy(dsname, strval, CRED()); 700 if (err != 0) 701 return (err); 702 } 703 #else 704 return (EOPNOTSUPP); 705 #endif 706 break; 707 } 708 709 return (zfs_secpolicy_write_perms(dsname, zfs_prop_to_name(prop), cr)); 710 } 711 712 /* ARGSUSED */ 713 static int 714 zfs_secpolicy_set_fsacl(zfs_cmd_t *zc, nvlist_t *innvl, cred_t *cr) 715 { 716 int error; 717 718 error = zfs_dozonecheck(zc->zc_name, cr); 719 if (error != 0) 720 return (error); 721 722 /* 723 * permission to set permissions will be evaluated later in 724 * dsl_deleg_can_allow() 725 */ 726 return (0); 727 } 728 729 /* ARGSUSED */ 730 static int 731 zfs_secpolicy_rollback(zfs_cmd_t *zc, nvlist_t *innvl, cred_t *cr) 732 { 733 return (zfs_secpolicy_write_perms(zc->zc_name, 734 ZFS_DELEG_PERM_ROLLBACK, cr)); 735 } 736 737 /* ARGSUSED */ 738 static int 739 zfs_secpolicy_send(zfs_cmd_t *zc, nvlist_t *innvl, cred_t *cr) 740 { 741 dsl_pool_t *dp; 742 dsl_dataset_t *ds; 743 char *cp; 744 int error; 745 746 /* 747 * Generate the current snapshot name from the given objsetid, then 748 * use that name for the secpolicy/zone checks. 749 */ 750 cp = strchr(zc->zc_name, '@'); 751 if (cp == NULL) 752 return (SET_ERROR(EINVAL)); 753 error = dsl_pool_hold(zc->zc_name, FTAG, &dp); 754 if (error != 0) 755 return (error); 756 757 error = dsl_dataset_hold_obj(dp, zc->zc_sendobj, FTAG, &ds); 758 if (error != 0) { 759 dsl_pool_rele(dp, FTAG); 760 return (error); 761 } 762 763 dsl_dataset_name(ds, zc->zc_name); 764 765 error = zfs_secpolicy_write_perms_ds(zc->zc_name, ds, 766 ZFS_DELEG_PERM_SEND, cr); 767 dsl_dataset_rele(ds, FTAG); 768 dsl_pool_rele(dp, FTAG); 769 770 return (error); 771 } 772 773 /* ARGSUSED */ 774 static int 775 zfs_secpolicy_send_new(zfs_cmd_t *zc, nvlist_t *innvl, cred_t *cr) 776 { 777 return (zfs_secpolicy_write_perms(zc->zc_name, 778 ZFS_DELEG_PERM_SEND, cr)); 779 } 780 781 /* ARGSUSED */ 782 static int 783 zfs_secpolicy_deleg_share(zfs_cmd_t *zc, nvlist_t *innvl, cred_t *cr) 784 { 785 vnode_t *vp; 786 int error; 787 788 if ((error = lookupname(zc->zc_value, UIO_SYSSPACE, 789 NO_FOLLOW, NULL, &vp)) != 0) 790 return (error); 791 792 /* Now make sure mntpnt and dataset are ZFS */ 793 794 if (strcmp(vp->v_vfsp->mnt_stat.f_fstypename, "zfs") != 0 || 795 (strcmp((char *)refstr_value(vp->v_vfsp->vfs_resource), 796 zc->zc_name) != 0)) { 797 VN_RELE(vp); 798 return (SET_ERROR(EPERM)); 799 } 800 801 VN_RELE(vp); 802 return (dsl_deleg_access(zc->zc_name, 803 ZFS_DELEG_PERM_SHARE, cr)); 804 } 805 806 int 807 zfs_secpolicy_share(zfs_cmd_t *zc, nvlist_t *innvl, cred_t *cr) 808 { 809 if (!INGLOBALZONE(curthread)) 810 return (SET_ERROR(EPERM)); 811 812 if (secpolicy_nfs(cr) == 0) { 813 return (0); 814 } else { 815 return (zfs_secpolicy_deleg_share(zc, innvl, cr)); 816 } 817 } 818 819 int 820 zfs_secpolicy_smb_acl(zfs_cmd_t *zc, nvlist_t *innvl, cred_t *cr) 821 { 822 if (!INGLOBALZONE(curthread)) 823 return (SET_ERROR(EPERM)); 824 825 if (secpolicy_smb(cr) == 0) { 826 return (0); 827 } else { 828 return (zfs_secpolicy_deleg_share(zc, innvl, cr)); 829 } 830 } 831 832 static int 833 zfs_get_parent(const char *datasetname, char *parent, int parentsize) 834 { 835 char *cp; 836 837 /* 838 * Remove the @bla or /bla from the end of the name to get the parent. 839 */ 840 (void) strncpy(parent, datasetname, parentsize); 841 cp = strrchr(parent, '@'); 842 if (cp != NULL) { 843 cp[0] = '\0'; 844 } else { 845 cp = strrchr(parent, '/'); 846 if (cp == NULL) 847 return (SET_ERROR(ENOENT)); 848 cp[0] = '\0'; 849 } 850 851 return (0); 852 } 853 854 int 855 zfs_secpolicy_destroy_perms(const char *name, cred_t *cr) 856 { 857 int error; 858 859 if ((error = zfs_secpolicy_write_perms(name, 860 ZFS_DELEG_PERM_MOUNT, cr)) != 0) 861 return (error); 862 863 return (zfs_secpolicy_write_perms(name, ZFS_DELEG_PERM_DESTROY, cr)); 864 } 865 866 /* ARGSUSED */ 867 static int 868 zfs_secpolicy_destroy(zfs_cmd_t *zc, nvlist_t *innvl, cred_t *cr) 869 { 870 return (zfs_secpolicy_destroy_perms(zc->zc_name, cr)); 871 } 872 873 /* 874 * Destroying snapshots with delegated permissions requires 875 * descendant mount and destroy permissions. 876 */ 877 /* ARGSUSED */ 878 static int 879 zfs_secpolicy_destroy_snaps(zfs_cmd_t *zc, nvlist_t *innvl, cred_t *cr) 880 { 881 nvlist_t *snaps; 882 nvpair_t *pair, *nextpair; 883 int error = 0; 884 885 if (nvlist_lookup_nvlist(innvl, "snaps", &snaps) != 0) 886 return (SET_ERROR(EINVAL)); 887 for (pair = nvlist_next_nvpair(snaps, NULL); pair != NULL; 888 pair = nextpair) { 889 nextpair = nvlist_next_nvpair(snaps, pair); 890 error = zfs_secpolicy_destroy_perms(nvpair_name(pair), cr); 891 if (error == ENOENT) { 892 /* 893 * Ignore any snapshots that don't exist (we consider 894 * them "already destroyed"). Remove the name from the 895 * nvl here in case the snapshot is created between 896 * now and when we try to destroy it (in which case 897 * we don't want to destroy it since we haven't 898 * checked for permission). 899 */ 900 fnvlist_remove_nvpair(snaps, pair); 901 error = 0; 902 } 903 if (error != 0) 904 break; 905 } 906 907 return (error); 908 } 909 910 int 911 zfs_secpolicy_rename_perms(const char *from, const char *to, cred_t *cr) 912 { 913 char parentname[ZFS_MAX_DATASET_NAME_LEN]; 914 int error; 915 916 if ((error = zfs_secpolicy_write_perms(from, 917 ZFS_DELEG_PERM_RENAME, cr)) != 0) 918 return (error); 919 920 if ((error = zfs_secpolicy_write_perms(from, 921 ZFS_DELEG_PERM_MOUNT, cr)) != 0) 922 return (error); 923 924 if ((error = zfs_get_parent(to, parentname, 925 sizeof (parentname))) != 0) 926 return (error); 927 928 if ((error = zfs_secpolicy_write_perms(parentname, 929 ZFS_DELEG_PERM_CREATE, cr)) != 0) 930 return (error); 931 932 if ((error = zfs_secpolicy_write_perms(parentname, 933 ZFS_DELEG_PERM_MOUNT, cr)) != 0) 934 return (error); 935 936 return (error); 937 } 938 939 /* ARGSUSED */ 940 static int 941 zfs_secpolicy_rename(zfs_cmd_t *zc, nvlist_t *innvl, cred_t *cr) 942 { 943 char *at = NULL; 944 int error; 945 946 if ((zc->zc_cookie & 1) != 0) { 947 /* 948 * This is recursive rename, so the starting snapshot might 949 * not exist. Check file system or volume permission instead. 950 */ 951 at = strchr(zc->zc_name, '@'); 952 if (at == NULL) 953 return (EINVAL); 954 *at = '\0'; 955 } 956 957 error = zfs_secpolicy_rename_perms(zc->zc_name, zc->zc_value, cr); 958 959 if (at != NULL) 960 *at = '@'; 961 962 return (error); 963 } 964 965 /* ARGSUSED */ 966 static int 967 zfs_secpolicy_promote(zfs_cmd_t *zc, nvlist_t *innvl, cred_t *cr) 968 { 969 dsl_pool_t *dp; 970 dsl_dataset_t *clone; 971 int error; 972 973 error = zfs_secpolicy_write_perms(zc->zc_name, 974 ZFS_DELEG_PERM_PROMOTE, cr); 975 if (error != 0) 976 return (error); 977 978 error = dsl_pool_hold(zc->zc_name, FTAG, &dp); 979 if (error != 0) 980 return (error); 981 982 error = dsl_dataset_hold(dp, zc->zc_name, FTAG, &clone); 983 984 if (error == 0) { 985 char parentname[ZFS_MAX_DATASET_NAME_LEN]; 986 dsl_dataset_t *origin = NULL; 987 dsl_dir_t *dd; 988 dd = clone->ds_dir; 989 990 error = dsl_dataset_hold_obj(dd->dd_pool, 991 dsl_dir_phys(dd)->dd_origin_obj, FTAG, &origin); 992 if (error != 0) { 993 dsl_dataset_rele(clone, FTAG); 994 dsl_pool_rele(dp, FTAG); 995 return (error); 996 } 997 998 error = zfs_secpolicy_write_perms_ds(zc->zc_name, clone, 999 ZFS_DELEG_PERM_MOUNT, cr); 1000 1001 dsl_dataset_name(origin, parentname); 1002 if (error == 0) { 1003 error = zfs_secpolicy_write_perms_ds(parentname, origin, 1004 ZFS_DELEG_PERM_PROMOTE, cr); 1005 } 1006 dsl_dataset_rele(clone, FTAG); 1007 dsl_dataset_rele(origin, FTAG); 1008 } 1009 dsl_pool_rele(dp, FTAG); 1010 return (error); 1011 } 1012 1013 /* ARGSUSED */ 1014 static int 1015 zfs_secpolicy_recv(zfs_cmd_t *zc, nvlist_t *innvl, cred_t *cr) 1016 { 1017 int error; 1018 1019 if ((error = zfs_secpolicy_write_perms(zc->zc_name, 1020 ZFS_DELEG_PERM_RECEIVE, cr)) != 0) 1021 return (error); 1022 1023 if ((error = zfs_secpolicy_write_perms(zc->zc_name, 1024 ZFS_DELEG_PERM_MOUNT, cr)) != 0) 1025 return (error); 1026 1027 return (zfs_secpolicy_write_perms(zc->zc_name, 1028 ZFS_DELEG_PERM_CREATE, cr)); 1029 } 1030 1031 int 1032 zfs_secpolicy_snapshot_perms(const char *name, cred_t *cr) 1033 { 1034 return (zfs_secpolicy_write_perms(name, 1035 ZFS_DELEG_PERM_SNAPSHOT, cr)); 1036 } 1037 1038 /* 1039 * Check for permission to create each snapshot in the nvlist. 1040 */ 1041 /* ARGSUSED */ 1042 static int 1043 zfs_secpolicy_snapshot(zfs_cmd_t *zc, nvlist_t *innvl, cred_t *cr) 1044 { 1045 nvlist_t *snaps; 1046 int error; 1047 nvpair_t *pair; 1048 1049 if (nvlist_lookup_nvlist(innvl, "snaps", &snaps) != 0) 1050 return (SET_ERROR(EINVAL)); 1051 for (pair = nvlist_next_nvpair(snaps, NULL); pair != NULL; 1052 pair = nvlist_next_nvpair(snaps, pair)) { 1053 char *name = nvpair_name(pair); 1054 char *atp = strchr(name, '@'); 1055 1056 if (atp == NULL) { 1057 error = SET_ERROR(EINVAL); 1058 break; 1059 } 1060 *atp = '\0'; 1061 error = zfs_secpolicy_snapshot_perms(name, cr); 1062 *atp = '@'; 1063 if (error != 0) 1064 break; 1065 } 1066 return (error); 1067 } 1068 1069 /* 1070 * Check for permission to create each snapshot in the nvlist. 1071 */ 1072 /* ARGSUSED */ 1073 static int 1074 zfs_secpolicy_bookmark(zfs_cmd_t *zc, nvlist_t *innvl, cred_t *cr) 1075 { 1076 int error = 0; 1077 1078 for (nvpair_t *pair = nvlist_next_nvpair(innvl, NULL); 1079 pair != NULL; pair = nvlist_next_nvpair(innvl, pair)) { 1080 char *name = nvpair_name(pair); 1081 char *hashp = strchr(name, '#'); 1082 1083 if (hashp == NULL) { 1084 error = SET_ERROR(EINVAL); 1085 break; 1086 } 1087 *hashp = '\0'; 1088 error = zfs_secpolicy_write_perms(name, 1089 ZFS_DELEG_PERM_BOOKMARK, cr); 1090 *hashp = '#'; 1091 if (error != 0) 1092 break; 1093 } 1094 return (error); 1095 } 1096 1097 /* ARGSUSED */ 1098 static int 1099 zfs_secpolicy_destroy_bookmarks(zfs_cmd_t *zc, nvlist_t *innvl, cred_t *cr) 1100 { 1101 nvpair_t *pair, *nextpair; 1102 int error = 0; 1103 1104 for (pair = nvlist_next_nvpair(innvl, NULL); pair != NULL; 1105 pair = nextpair) { 1106 char *name = nvpair_name(pair); 1107 char *hashp = strchr(name, '#'); 1108 nextpair = nvlist_next_nvpair(innvl, pair); 1109 1110 if (hashp == NULL) { 1111 error = SET_ERROR(EINVAL); 1112 break; 1113 } 1114 1115 *hashp = '\0'; 1116 error = zfs_secpolicy_write_perms(name, 1117 ZFS_DELEG_PERM_DESTROY, cr); 1118 *hashp = '#'; 1119 if (error == ENOENT) { 1120 /* 1121 * Ignore any filesystems that don't exist (we consider 1122 * their bookmarks "already destroyed"). Remove 1123 * the name from the nvl here in case the filesystem 1124 * is created between now and when we try to destroy 1125 * the bookmark (in which case we don't want to 1126 * destroy it since we haven't checked for permission). 1127 */ 1128 fnvlist_remove_nvpair(innvl, pair); 1129 error = 0; 1130 } 1131 if (error != 0) 1132 break; 1133 } 1134 1135 return (error); 1136 } 1137 1138 /* ARGSUSED */ 1139 static int 1140 zfs_secpolicy_log_history(zfs_cmd_t *zc, nvlist_t *innvl, cred_t *cr) 1141 { 1142 /* 1143 * Even root must have a proper TSD so that we know what pool 1144 * to log to. 1145 */ 1146 if (tsd_get(zfs_allow_log_key) == NULL) 1147 return (SET_ERROR(EPERM)); 1148 return (0); 1149 } 1150 1151 static int 1152 zfs_secpolicy_create_clone(zfs_cmd_t *zc, nvlist_t *innvl, cred_t *cr) 1153 { 1154 char parentname[ZFS_MAX_DATASET_NAME_LEN]; 1155 int error; 1156 char *origin; 1157 1158 if ((error = zfs_get_parent(zc->zc_name, parentname, 1159 sizeof (parentname))) != 0) 1160 return (error); 1161 1162 if (nvlist_lookup_string(innvl, "origin", &origin) == 0 && 1163 (error = zfs_secpolicy_write_perms(origin, 1164 ZFS_DELEG_PERM_CLONE, cr)) != 0) 1165 return (error); 1166 1167 if ((error = zfs_secpolicy_write_perms(parentname, 1168 ZFS_DELEG_PERM_CREATE, cr)) != 0) 1169 return (error); 1170 1171 return (zfs_secpolicy_write_perms(parentname, 1172 ZFS_DELEG_PERM_MOUNT, cr)); 1173 } 1174 1175 /* 1176 * Policy for pool operations - create/destroy pools, add vdevs, etc. Requires 1177 * SYS_CONFIG privilege, which is not available in a local zone. 1178 */ 1179 /* ARGSUSED */ 1180 static int 1181 zfs_secpolicy_config(zfs_cmd_t *zc, nvlist_t *innvl, cred_t *cr) 1182 { 1183 if (secpolicy_sys_config(cr, B_FALSE) != 0) 1184 return (SET_ERROR(EPERM)); 1185 1186 return (0); 1187 } 1188 1189 /* 1190 * Policy for object to name lookups. 1191 */ 1192 /* ARGSUSED */ 1193 static int 1194 zfs_secpolicy_diff(zfs_cmd_t *zc, nvlist_t *innvl, cred_t *cr) 1195 { 1196 int error; 1197 1198 if ((error = secpolicy_sys_config(cr, B_FALSE)) == 0) 1199 return (0); 1200 1201 error = zfs_secpolicy_write_perms(zc->zc_name, ZFS_DELEG_PERM_DIFF, cr); 1202 return (error); 1203 } 1204 1205 /* 1206 * Policy for fault injection. Requires all privileges. 1207 */ 1208 /* ARGSUSED */ 1209 static int 1210 zfs_secpolicy_inject(zfs_cmd_t *zc, nvlist_t *innvl, cred_t *cr) 1211 { 1212 return (secpolicy_zinject(cr)); 1213 } 1214 1215 /* ARGSUSED */ 1216 static int 1217 zfs_secpolicy_inherit_prop(zfs_cmd_t *zc, nvlist_t *innvl, cred_t *cr) 1218 { 1219 zfs_prop_t prop = zfs_name_to_prop(zc->zc_value); 1220 1221 if (prop == ZPROP_INVAL) { 1222 if (!zfs_prop_user(zc->zc_value)) 1223 return (SET_ERROR(EINVAL)); 1224 return (zfs_secpolicy_write_perms(zc->zc_name, 1225 ZFS_DELEG_PERM_USERPROP, cr)); 1226 } else { 1227 return (zfs_secpolicy_setprop(zc->zc_name, prop, 1228 NULL, cr)); 1229 } 1230 } 1231 1232 static int 1233 zfs_secpolicy_userspace_one(zfs_cmd_t *zc, nvlist_t *innvl, cred_t *cr) 1234 { 1235 int err = zfs_secpolicy_read(zc, innvl, cr); 1236 if (err) 1237 return (err); 1238 1239 if (zc->zc_objset_type >= ZFS_NUM_USERQUOTA_PROPS) 1240 return (SET_ERROR(EINVAL)); 1241 1242 if (zc->zc_value[0] == 0) { 1243 /* 1244 * They are asking about a posix uid/gid. If it's 1245 * themself, allow it. 1246 */ 1247 if (zc->zc_objset_type == ZFS_PROP_USERUSED || 1248 zc->zc_objset_type == ZFS_PROP_USERQUOTA) { 1249 if (zc->zc_guid == crgetuid(cr)) 1250 return (0); 1251 } else { 1252 if (groupmember(zc->zc_guid, cr)) 1253 return (0); 1254 } 1255 } 1256 1257 return (zfs_secpolicy_write_perms(zc->zc_name, 1258 userquota_perms[zc->zc_objset_type], cr)); 1259 } 1260 1261 static int 1262 zfs_secpolicy_userspace_many(zfs_cmd_t *zc, nvlist_t *innvl, cred_t *cr) 1263 { 1264 int err = zfs_secpolicy_read(zc, innvl, cr); 1265 if (err) 1266 return (err); 1267 1268 if (zc->zc_objset_type >= ZFS_NUM_USERQUOTA_PROPS) 1269 return (SET_ERROR(EINVAL)); 1270 1271 return (zfs_secpolicy_write_perms(zc->zc_name, 1272 userquota_perms[zc->zc_objset_type], cr)); 1273 } 1274 1275 /* ARGSUSED */ 1276 static int 1277 zfs_secpolicy_userspace_upgrade(zfs_cmd_t *zc, nvlist_t *innvl, cred_t *cr) 1278 { 1279 return (zfs_secpolicy_setprop(zc->zc_name, ZFS_PROP_VERSION, 1280 NULL, cr)); 1281 } 1282 1283 /* ARGSUSED */ 1284 static int 1285 zfs_secpolicy_hold(zfs_cmd_t *zc, nvlist_t *innvl, cred_t *cr) 1286 { 1287 nvpair_t *pair; 1288 nvlist_t *holds; 1289 int error; 1290 1291 error = nvlist_lookup_nvlist(innvl, "holds", &holds); 1292 if (error != 0) 1293 return (SET_ERROR(EINVAL)); 1294 1295 for (pair = nvlist_next_nvpair(holds, NULL); pair != NULL; 1296 pair = nvlist_next_nvpair(holds, pair)) { 1297 char fsname[ZFS_MAX_DATASET_NAME_LEN]; 1298 error = dmu_fsname(nvpair_name(pair), fsname); 1299 if (error != 0) 1300 return (error); 1301 error = zfs_secpolicy_write_perms(fsname, 1302 ZFS_DELEG_PERM_HOLD, cr); 1303 if (error != 0) 1304 return (error); 1305 } 1306 return (0); 1307 } 1308 1309 /* ARGSUSED */ 1310 static int 1311 zfs_secpolicy_release(zfs_cmd_t *zc, nvlist_t *innvl, cred_t *cr) 1312 { 1313 nvpair_t *pair; 1314 int error; 1315 1316 for (pair = nvlist_next_nvpair(innvl, NULL); pair != NULL; 1317 pair = nvlist_next_nvpair(innvl, pair)) { 1318 char fsname[ZFS_MAX_DATASET_NAME_LEN]; 1319 error = dmu_fsname(nvpair_name(pair), fsname); 1320 if (error != 0) 1321 return (error); 1322 error = zfs_secpolicy_write_perms(fsname, 1323 ZFS_DELEG_PERM_RELEASE, cr); 1324 if (error != 0) 1325 return (error); 1326 } 1327 return (0); 1328 } 1329 1330 /* 1331 * Policy for allowing temporary snapshots to be taken or released 1332 */ 1333 static int 1334 zfs_secpolicy_tmp_snapshot(zfs_cmd_t *zc, nvlist_t *innvl, cred_t *cr) 1335 { 1336 /* 1337 * A temporary snapshot is the same as a snapshot, 1338 * hold, destroy and release all rolled into one. 1339 * Delegated diff alone is sufficient that we allow this. 1340 */ 1341 int error; 1342 1343 if ((error = zfs_secpolicy_write_perms(zc->zc_name, 1344 ZFS_DELEG_PERM_DIFF, cr)) == 0) 1345 return (0); 1346 1347 error = zfs_secpolicy_snapshot_perms(zc->zc_name, cr); 1348 if (error == 0) 1349 error = zfs_secpolicy_hold(zc, innvl, cr); 1350 if (error == 0) 1351 error = zfs_secpolicy_release(zc, innvl, cr); 1352 if (error == 0) 1353 error = zfs_secpolicy_destroy(zc, innvl, cr); 1354 return (error); 1355 } 1356 1357 /* 1358 * Returns the nvlist as specified by the user in the zfs_cmd_t. 1359 */ 1360 static int 1361 get_nvlist(uint64_t nvl, uint64_t size, int iflag, nvlist_t **nvp) 1362 { 1363 char *packed; 1364 int error; 1365 nvlist_t *list = NULL; 1366 1367 /* 1368 * Read in and unpack the user-supplied nvlist. 1369 */ 1370 if (size == 0) 1371 return (SET_ERROR(EINVAL)); 1372 1373 packed = kmem_alloc(size, KM_SLEEP); 1374 1375 if ((error = ddi_copyin((void *)(uintptr_t)nvl, packed, size, 1376 iflag)) != 0) { 1377 kmem_free(packed, size); 1378 return (SET_ERROR(EFAULT)); 1379 } 1380 1381 if ((error = nvlist_unpack(packed, size, &list, 0)) != 0) { 1382 kmem_free(packed, size); 1383 return (error); 1384 } 1385 1386 kmem_free(packed, size); 1387 1388 *nvp = list; 1389 return (0); 1390 } 1391 1392 /* 1393 * Reduce the size of this nvlist until it can be serialized in 'max' bytes. 1394 * Entries will be removed from the end of the nvlist, and one int32 entry 1395 * named "N_MORE_ERRORS" will be added indicating how many entries were 1396 * removed. 1397 */ 1398 static int 1399 nvlist_smush(nvlist_t *errors, size_t max) 1400 { 1401 size_t size; 1402 1403 size = fnvlist_size(errors); 1404 1405 if (size > max) { 1406 nvpair_t *more_errors; 1407 int n = 0; 1408 1409 if (max < 1024) 1410 return (SET_ERROR(ENOMEM)); 1411 1412 fnvlist_add_int32(errors, ZPROP_N_MORE_ERRORS, 0); 1413 more_errors = nvlist_prev_nvpair(errors, NULL); 1414 1415 do { 1416 nvpair_t *pair = nvlist_prev_nvpair(errors, 1417 more_errors); 1418 fnvlist_remove_nvpair(errors, pair); 1419 n++; 1420 size = fnvlist_size(errors); 1421 } while (size > max); 1422 1423 fnvlist_remove_nvpair(errors, more_errors); 1424 fnvlist_add_int32(errors, ZPROP_N_MORE_ERRORS, n); 1425 ASSERT3U(fnvlist_size(errors), <=, max); 1426 } 1427 1428 return (0); 1429 } 1430 1431 static int 1432 put_nvlist(zfs_cmd_t *zc, nvlist_t *nvl) 1433 { 1434 char *packed = NULL; 1435 int error = 0; 1436 size_t size; 1437 1438 size = fnvlist_size(nvl); 1439 1440 if (size > zc->zc_nvlist_dst_size) { 1441 /* 1442 * Solaris returns ENOMEM here, because even if an error is 1443 * returned from an ioctl(2), new zc_nvlist_dst_size will be 1444 * passed to the userland. This is not the case for FreeBSD. 1445 * We need to return 0, so the kernel will copy the 1446 * zc_nvlist_dst_size back and the userland can discover that a 1447 * bigger buffer is needed. 1448 */ 1449 error = 0; 1450 } else { 1451 packed = fnvlist_pack(nvl, &size); 1452 if (ddi_copyout(packed, (void *)(uintptr_t)zc->zc_nvlist_dst, 1453 size, zc->zc_iflags) != 0) 1454 error = SET_ERROR(EFAULT); 1455 fnvlist_pack_free(packed, size); 1456 } 1457 1458 zc->zc_nvlist_dst_size = size; 1459 zc->zc_nvlist_dst_filled = B_TRUE; 1460 return (error); 1461 } 1462 1463 static int 1464 getzfsvfs(const char *dsname, zfsvfs_t **zfvp) 1465 { 1466 objset_t *os; 1467 vfs_t *vfsp; 1468 int error; 1469 1470 error = dmu_objset_hold(dsname, FTAG, &os); 1471 if (error != 0) 1472 return (error); 1473 if (dmu_objset_type(os) != DMU_OST_ZFS) { 1474 dmu_objset_rele(os, FTAG); 1475 return (SET_ERROR(EINVAL)); 1476 } 1477 1478 mutex_enter(&os->os_user_ptr_lock); 1479 *zfvp = dmu_objset_get_user(os); 1480 if (*zfvp) { 1481 vfsp = (*zfvp)->z_vfs; 1482 vfs_ref(vfsp); 1483 } else { 1484 error = SET_ERROR(ESRCH); 1485 } 1486 mutex_exit(&os->os_user_ptr_lock); 1487 dmu_objset_rele(os, FTAG); 1488 if (error == 0) { 1489 error = vfs_busy(vfsp, 0); 1490 vfs_rel(vfsp); 1491 if (error != 0) { 1492 *zfvp = NULL; 1493 error = SET_ERROR(ESRCH); 1494 } 1495 } 1496 return (error); 1497 } 1498 1499 /* 1500 * Find a zfsvfs_t for a mounted filesystem, or create our own, in which 1501 * case its z_vfs will be NULL, and it will be opened as the owner. 1502 * If 'writer' is set, the z_teardown_lock will be held for RW_WRITER, 1503 * which prevents all vnode ops from running. 1504 */ 1505 static int 1506 zfsvfs_hold(const char *name, void *tag, zfsvfs_t **zfvp, boolean_t writer) 1507 { 1508 int error = 0; 1509 1510 if (getzfsvfs(name, zfvp) != 0) 1511 error = zfsvfs_create(name, zfvp); 1512 if (error == 0) { 1513 rrm_enter(&(*zfvp)->z_teardown_lock, (writer) ? RW_WRITER : 1514 RW_READER, tag); 1515 if ((*zfvp)->z_unmounted) { 1516 /* 1517 * XXX we could probably try again, since the unmounting 1518 * thread should be just about to disassociate the 1519 * objset from the zfsvfs. 1520 */ 1521 rrm_exit(&(*zfvp)->z_teardown_lock, tag); 1522 return (SET_ERROR(EBUSY)); 1523 } 1524 } 1525 return (error); 1526 } 1527 1528 static void 1529 zfsvfs_rele(zfsvfs_t *zfsvfs, void *tag) 1530 { 1531 rrm_exit(&zfsvfs->z_teardown_lock, tag); 1532 1533 if (zfsvfs->z_vfs) { 1534 #ifdef illumos 1535 VFS_RELE(zfsvfs->z_vfs); 1536 #else 1537 vfs_unbusy(zfsvfs->z_vfs); 1538 #endif 1539 } else { 1540 dmu_objset_disown(zfsvfs->z_os, zfsvfs); 1541 zfsvfs_free(zfsvfs); 1542 } 1543 } 1544 1545 static int 1546 zfs_ioc_pool_create(zfs_cmd_t *zc) 1547 { 1548 int error; 1549 nvlist_t *config, *props = NULL; 1550 nvlist_t *rootprops = NULL; 1551 nvlist_t *zplprops = NULL; 1552 1553 if (error = get_nvlist(zc->zc_nvlist_conf, zc->zc_nvlist_conf_size, 1554 zc->zc_iflags, &config)) 1555 return (error); 1556 1557 if (zc->zc_nvlist_src_size != 0 && (error = 1558 get_nvlist(zc->zc_nvlist_src, zc->zc_nvlist_src_size, 1559 zc->zc_iflags, &props))) { 1560 nvlist_free(config); 1561 return (error); 1562 } 1563 1564 if (props) { 1565 nvlist_t *nvl = NULL; 1566 uint64_t version = SPA_VERSION; 1567 1568 (void) nvlist_lookup_uint64(props, 1569 zpool_prop_to_name(ZPOOL_PROP_VERSION), &version); 1570 if (!SPA_VERSION_IS_SUPPORTED(version)) { 1571 error = SET_ERROR(EINVAL); 1572 goto pool_props_bad; 1573 } 1574 (void) nvlist_lookup_nvlist(props, ZPOOL_ROOTFS_PROPS, &nvl); 1575 if (nvl) { 1576 error = nvlist_dup(nvl, &rootprops, KM_SLEEP); 1577 if (error != 0) { 1578 nvlist_free(config); 1579 nvlist_free(props); 1580 return (error); 1581 } 1582 (void) nvlist_remove_all(props, ZPOOL_ROOTFS_PROPS); 1583 } 1584 VERIFY(nvlist_alloc(&zplprops, NV_UNIQUE_NAME, KM_SLEEP) == 0); 1585 error = zfs_fill_zplprops_root(version, rootprops, 1586 zplprops, NULL); 1587 if (error != 0) 1588 goto pool_props_bad; 1589 } 1590 1591 error = spa_create(zc->zc_name, config, props, zplprops); 1592 1593 /* 1594 * Set the remaining root properties 1595 */ 1596 if (!error && (error = zfs_set_prop_nvlist(zc->zc_name, 1597 ZPROP_SRC_LOCAL, rootprops, NULL)) != 0) 1598 (void) spa_destroy(zc->zc_name); 1599 1600 pool_props_bad: 1601 nvlist_free(rootprops); 1602 nvlist_free(zplprops); 1603 nvlist_free(config); 1604 nvlist_free(props); 1605 1606 return (error); 1607 } 1608 1609 static int 1610 zfs_ioc_pool_destroy(zfs_cmd_t *zc) 1611 { 1612 int error; 1613 zfs_log_history(zc); 1614 error = spa_destroy(zc->zc_name); 1615 if (error == 0) 1616 zvol_remove_minors(zc->zc_name); 1617 return (error); 1618 } 1619 1620 static int 1621 zfs_ioc_pool_import(zfs_cmd_t *zc) 1622 { 1623 nvlist_t *config, *props = NULL; 1624 uint64_t guid; 1625 int error; 1626 1627 if ((error = get_nvlist(zc->zc_nvlist_conf, zc->zc_nvlist_conf_size, 1628 zc->zc_iflags, &config)) != 0) 1629 return (error); 1630 1631 if (zc->zc_nvlist_src_size != 0 && (error = 1632 get_nvlist(zc->zc_nvlist_src, zc->zc_nvlist_src_size, 1633 zc->zc_iflags, &props))) { 1634 nvlist_free(config); 1635 return (error); 1636 } 1637 1638 if (nvlist_lookup_uint64(config, ZPOOL_CONFIG_POOL_GUID, &guid) != 0 || 1639 guid != zc->zc_guid) 1640 error = SET_ERROR(EINVAL); 1641 else 1642 error = spa_import(zc->zc_name, config, props, zc->zc_cookie); 1643 1644 if (zc->zc_nvlist_dst != 0) { 1645 int err; 1646 1647 if ((err = put_nvlist(zc, config)) != 0) 1648 error = err; 1649 } 1650 1651 nvlist_free(config); 1652 1653 nvlist_free(props); 1654 1655 return (error); 1656 } 1657 1658 static int 1659 zfs_ioc_pool_export(zfs_cmd_t *zc) 1660 { 1661 int error; 1662 boolean_t force = (boolean_t)zc->zc_cookie; 1663 boolean_t hardforce = (boolean_t)zc->zc_guid; 1664 1665 zfs_log_history(zc); 1666 error = spa_export(zc->zc_name, NULL, force, hardforce); 1667 if (error == 0) 1668 zvol_remove_minors(zc->zc_name); 1669 return (error); 1670 } 1671 1672 static int 1673 zfs_ioc_pool_configs(zfs_cmd_t *zc) 1674 { 1675 nvlist_t *configs; 1676 int error; 1677 1678 if ((configs = spa_all_configs(&zc->zc_cookie)) == NULL) 1679 return (SET_ERROR(EEXIST)); 1680 1681 error = put_nvlist(zc, configs); 1682 1683 nvlist_free(configs); 1684 1685 return (error); 1686 } 1687 1688 /* 1689 * inputs: 1690 * zc_name name of the pool 1691 * 1692 * outputs: 1693 * zc_cookie real errno 1694 * zc_nvlist_dst config nvlist 1695 * zc_nvlist_dst_size size of config nvlist 1696 */ 1697 static int 1698 zfs_ioc_pool_stats(zfs_cmd_t *zc) 1699 { 1700 nvlist_t *config; 1701 int error; 1702 int ret = 0; 1703 1704 error = spa_get_stats(zc->zc_name, &config, zc->zc_value, 1705 sizeof (zc->zc_value)); 1706 1707 if (config != NULL) { 1708 ret = put_nvlist(zc, config); 1709 nvlist_free(config); 1710 1711 /* 1712 * The config may be present even if 'error' is non-zero. 1713 * In this case we return success, and preserve the real errno 1714 * in 'zc_cookie'. 1715 */ 1716 zc->zc_cookie = error; 1717 } else { 1718 ret = error; 1719 } 1720 1721 return (ret); 1722 } 1723 1724 /* 1725 * Try to import the given pool, returning pool stats as appropriate so that 1726 * user land knows which devices are available and overall pool health. 1727 */ 1728 static int 1729 zfs_ioc_pool_tryimport(zfs_cmd_t *zc) 1730 { 1731 nvlist_t *tryconfig, *config; 1732 int error; 1733 1734 if ((error = get_nvlist(zc->zc_nvlist_conf, zc->zc_nvlist_conf_size, 1735 zc->zc_iflags, &tryconfig)) != 0) 1736 return (error); 1737 1738 config = spa_tryimport(tryconfig); 1739 1740 nvlist_free(tryconfig); 1741 1742 if (config == NULL) 1743 return (SET_ERROR(EINVAL)); 1744 1745 error = put_nvlist(zc, config); 1746 nvlist_free(config); 1747 1748 return (error); 1749 } 1750 1751 /* 1752 * inputs: 1753 * zc_name name of the pool 1754 * zc_cookie scan func (pool_scan_func_t) 1755 */ 1756 static int 1757 zfs_ioc_pool_scan(zfs_cmd_t *zc) 1758 { 1759 spa_t *spa; 1760 int error; 1761 1762 if ((error = spa_open(zc->zc_name, &spa, FTAG)) != 0) 1763 return (error); 1764 1765 if (zc->zc_cookie == POOL_SCAN_NONE) 1766 error = spa_scan_stop(spa); 1767 else 1768 error = spa_scan(spa, zc->zc_cookie); 1769 1770 spa_close(spa, FTAG); 1771 1772 return (error); 1773 } 1774 1775 static int 1776 zfs_ioc_pool_freeze(zfs_cmd_t *zc) 1777 { 1778 spa_t *spa; 1779 int error; 1780 1781 error = spa_open(zc->zc_name, &spa, FTAG); 1782 if (error == 0) { 1783 spa_freeze(spa); 1784 spa_close(spa, FTAG); 1785 } 1786 return (error); 1787 } 1788 1789 static int 1790 zfs_ioc_pool_upgrade(zfs_cmd_t *zc) 1791 { 1792 spa_t *spa; 1793 int error; 1794 1795 if ((error = spa_open(zc->zc_name, &spa, FTAG)) != 0) 1796 return (error); 1797 1798 if (zc->zc_cookie < spa_version(spa) || 1799 !SPA_VERSION_IS_SUPPORTED(zc->zc_cookie)) { 1800 spa_close(spa, FTAG); 1801 return (SET_ERROR(EINVAL)); 1802 } 1803 1804 spa_upgrade(spa, zc->zc_cookie); 1805 spa_close(spa, FTAG); 1806 1807 return (error); 1808 } 1809 1810 static int 1811 zfs_ioc_pool_get_history(zfs_cmd_t *zc) 1812 { 1813 spa_t *spa; 1814 char *hist_buf; 1815 uint64_t size; 1816 int error; 1817 1818 if ((size = zc->zc_history_len) == 0) 1819 return (SET_ERROR(EINVAL)); 1820 1821 if ((error = spa_open(zc->zc_name, &spa, FTAG)) != 0) 1822 return (error); 1823 1824 if (spa_version(spa) < SPA_VERSION_ZPOOL_HISTORY) { 1825 spa_close(spa, FTAG); 1826 return (SET_ERROR(ENOTSUP)); 1827 } 1828 1829 hist_buf = kmem_alloc(size, KM_SLEEP); 1830 if ((error = spa_history_get(spa, &zc->zc_history_offset, 1831 &zc->zc_history_len, hist_buf)) == 0) { 1832 error = ddi_copyout(hist_buf, 1833 (void *)(uintptr_t)zc->zc_history, 1834 zc->zc_history_len, zc->zc_iflags); 1835 } 1836 1837 spa_close(spa, FTAG); 1838 kmem_free(hist_buf, size); 1839 return (error); 1840 } 1841 1842 static int 1843 zfs_ioc_pool_reguid(zfs_cmd_t *zc) 1844 { 1845 spa_t *spa; 1846 int error; 1847 1848 error = spa_open(zc->zc_name, &spa, FTAG); 1849 if (error == 0) { 1850 error = spa_change_guid(spa); 1851 spa_close(spa, FTAG); 1852 } 1853 return (error); 1854 } 1855 1856 static int 1857 zfs_ioc_dsobj_to_dsname(zfs_cmd_t *zc) 1858 { 1859 return (dsl_dsobj_to_dsname(zc->zc_name, zc->zc_obj, zc->zc_value)); 1860 } 1861 1862 /* 1863 * inputs: 1864 * zc_name name of filesystem 1865 * zc_obj object to find 1866 * 1867 * outputs: 1868 * zc_value name of object 1869 */ 1870 static int 1871 zfs_ioc_obj_to_path(zfs_cmd_t *zc) 1872 { 1873 objset_t *os; 1874 int error; 1875 1876 /* XXX reading from objset not owned */ 1877 if ((error = dmu_objset_hold(zc->zc_name, FTAG, &os)) != 0) 1878 return (error); 1879 if (dmu_objset_type(os) != DMU_OST_ZFS) { 1880 dmu_objset_rele(os, FTAG); 1881 return (SET_ERROR(EINVAL)); 1882 } 1883 error = zfs_obj_to_path(os, zc->zc_obj, zc->zc_value, 1884 sizeof (zc->zc_value)); 1885 dmu_objset_rele(os, FTAG); 1886 1887 return (error); 1888 } 1889 1890 /* 1891 * inputs: 1892 * zc_name name of filesystem 1893 * zc_obj object to find 1894 * 1895 * outputs: 1896 * zc_stat stats on object 1897 * zc_value path to object 1898 */ 1899 static int 1900 zfs_ioc_obj_to_stats(zfs_cmd_t *zc) 1901 { 1902 objset_t *os; 1903 int error; 1904 1905 /* XXX reading from objset not owned */ 1906 if ((error = dmu_objset_hold(zc->zc_name, FTAG, &os)) != 0) 1907 return (error); 1908 if (dmu_objset_type(os) != DMU_OST_ZFS) { 1909 dmu_objset_rele(os, FTAG); 1910 return (SET_ERROR(EINVAL)); 1911 } 1912 error = zfs_obj_to_stats(os, zc->zc_obj, &zc->zc_stat, zc->zc_value, 1913 sizeof (zc->zc_value)); 1914 dmu_objset_rele(os, FTAG); 1915 1916 return (error); 1917 } 1918 1919 static int 1920 zfs_ioc_vdev_add(zfs_cmd_t *zc) 1921 { 1922 spa_t *spa; 1923 int error; 1924 nvlist_t *config, **l2cache, **spares; 1925 uint_t nl2cache = 0, nspares = 0; 1926 1927 error = spa_open(zc->zc_name, &spa, FTAG); 1928 if (error != 0) 1929 return (error); 1930 1931 error = get_nvlist(zc->zc_nvlist_conf, zc->zc_nvlist_conf_size, 1932 zc->zc_iflags, &config); 1933 (void) nvlist_lookup_nvlist_array(config, ZPOOL_CONFIG_L2CACHE, 1934 &l2cache, &nl2cache); 1935 1936 (void) nvlist_lookup_nvlist_array(config, ZPOOL_CONFIG_SPARES, 1937 &spares, &nspares); 1938 1939 #ifdef illumos 1940 /* 1941 * A root pool with concatenated devices is not supported. 1942 * Thus, can not add a device to a root pool. 1943 * 1944 * Intent log device can not be added to a rootpool because 1945 * during mountroot, zil is replayed, a seperated log device 1946 * can not be accessed during the mountroot time. 1947 * 1948 * l2cache and spare devices are ok to be added to a rootpool. 1949 */ 1950 if (spa_bootfs(spa) != 0 && nl2cache == 0 && nspares == 0) { 1951 nvlist_free(config); 1952 spa_close(spa, FTAG); 1953 return (SET_ERROR(EDOM)); 1954 } 1955 #endif /* illumos */ 1956 1957 if (error == 0) { 1958 error = spa_vdev_add(spa, config); 1959 nvlist_free(config); 1960 } 1961 spa_close(spa, FTAG); 1962 return (error); 1963 } 1964 1965 /* 1966 * inputs: 1967 * zc_name name of the pool 1968 * zc_nvlist_conf nvlist of devices to remove 1969 * zc_cookie to stop the remove? 1970 */ 1971 static int 1972 zfs_ioc_vdev_remove(zfs_cmd_t *zc) 1973 { 1974 spa_t *spa; 1975 int error; 1976 1977 error = spa_open(zc->zc_name, &spa, FTAG); 1978 if (error != 0) 1979 return (error); 1980 error = spa_vdev_remove(spa, zc->zc_guid, B_FALSE); 1981 spa_close(spa, FTAG); 1982 return (error); 1983 } 1984 1985 static int 1986 zfs_ioc_vdev_set_state(zfs_cmd_t *zc) 1987 { 1988 spa_t *spa; 1989 int error; 1990 vdev_state_t newstate = VDEV_STATE_UNKNOWN; 1991 1992 if ((error = spa_open(zc->zc_name, &spa, FTAG)) != 0) 1993 return (error); 1994 switch (zc->zc_cookie) { 1995 case VDEV_STATE_ONLINE: 1996 error = vdev_online(spa, zc->zc_guid, zc->zc_obj, &newstate); 1997 break; 1998 1999 case VDEV_STATE_OFFLINE: 2000 error = vdev_offline(spa, zc->zc_guid, zc->zc_obj); 2001 break; 2002 2003 case VDEV_STATE_FAULTED: 2004 if (zc->zc_obj != VDEV_AUX_ERR_EXCEEDED && 2005 zc->zc_obj != VDEV_AUX_EXTERNAL) 2006 zc->zc_obj = VDEV_AUX_ERR_EXCEEDED; 2007 2008 error = vdev_fault(spa, zc->zc_guid, zc->zc_obj); 2009 break; 2010 2011 case VDEV_STATE_DEGRADED: 2012 if (zc->zc_obj != VDEV_AUX_ERR_EXCEEDED && 2013 zc->zc_obj != VDEV_AUX_EXTERNAL) 2014 zc->zc_obj = VDEV_AUX_ERR_EXCEEDED; 2015 2016 error = vdev_degrade(spa, zc->zc_guid, zc->zc_obj); 2017 break; 2018 2019 default: 2020 error = SET_ERROR(EINVAL); 2021 } 2022 zc->zc_cookie = newstate; 2023 spa_close(spa, FTAG); 2024 return (error); 2025 } 2026 2027 static int 2028 zfs_ioc_vdev_attach(zfs_cmd_t *zc) 2029 { 2030 spa_t *spa; 2031 int replacing = zc->zc_cookie; 2032 nvlist_t *config; 2033 int error; 2034 2035 if ((error = spa_open(zc->zc_name, &spa, FTAG)) != 0) 2036 return (error); 2037 2038 if ((error = get_nvlist(zc->zc_nvlist_conf, zc->zc_nvlist_conf_size, 2039 zc->zc_iflags, &config)) == 0) { 2040 error = spa_vdev_attach(spa, zc->zc_guid, config, replacing); 2041 nvlist_free(config); 2042 } 2043 2044 spa_close(spa, FTAG); 2045 return (error); 2046 } 2047 2048 static int 2049 zfs_ioc_vdev_detach(zfs_cmd_t *zc) 2050 { 2051 spa_t *spa; 2052 int error; 2053 2054 if ((error = spa_open(zc->zc_name, &spa, FTAG)) != 0) 2055 return (error); 2056 2057 error = spa_vdev_detach(spa, zc->zc_guid, 0, B_FALSE); 2058 2059 spa_close(spa, FTAG); 2060 return (error); 2061 } 2062 2063 static int 2064 zfs_ioc_vdev_split(zfs_cmd_t *zc) 2065 { 2066 spa_t *spa; 2067 nvlist_t *config, *props = NULL; 2068 int error; 2069 boolean_t exp = !!(zc->zc_cookie & ZPOOL_EXPORT_AFTER_SPLIT); 2070 2071 if ((error = spa_open(zc->zc_name, &spa, FTAG)) != 0) 2072 return (error); 2073 2074 if (error = get_nvlist(zc->zc_nvlist_conf, zc->zc_nvlist_conf_size, 2075 zc->zc_iflags, &config)) { 2076 spa_close(spa, FTAG); 2077 return (error); 2078 } 2079 2080 if (zc->zc_nvlist_src_size != 0 && (error = 2081 get_nvlist(zc->zc_nvlist_src, zc->zc_nvlist_src_size, 2082 zc->zc_iflags, &props))) { 2083 spa_close(spa, FTAG); 2084 nvlist_free(config); 2085 return (error); 2086 } 2087 2088 error = spa_vdev_split_mirror(spa, zc->zc_string, config, props, exp); 2089 2090 spa_close(spa, FTAG); 2091 2092 nvlist_free(config); 2093 nvlist_free(props); 2094 2095 return (error); 2096 } 2097 2098 static int 2099 zfs_ioc_vdev_setpath(zfs_cmd_t *zc) 2100 { 2101 spa_t *spa; 2102 char *path = zc->zc_value; 2103 uint64_t guid = zc->zc_guid; 2104 int error; 2105 2106 error = spa_open(zc->zc_name, &spa, FTAG); 2107 if (error != 0) 2108 return (error); 2109 2110 error = spa_vdev_setpath(spa, guid, path); 2111 spa_close(spa, FTAG); 2112 return (error); 2113 } 2114 2115 static int 2116 zfs_ioc_vdev_setfru(zfs_cmd_t *zc) 2117 { 2118 spa_t *spa; 2119 char *fru = zc->zc_value; 2120 uint64_t guid = zc->zc_guid; 2121 int error; 2122 2123 error = spa_open(zc->zc_name, &spa, FTAG); 2124 if (error != 0) 2125 return (error); 2126 2127 error = spa_vdev_setfru(spa, guid, fru); 2128 spa_close(spa, FTAG); 2129 return (error); 2130 } 2131 2132 static int 2133 zfs_ioc_objset_stats_impl(zfs_cmd_t *zc, objset_t *os) 2134 { 2135 int error = 0; 2136 nvlist_t *nv; 2137 2138 dmu_objset_fast_stat(os, &zc->zc_objset_stats); 2139 2140 if (zc->zc_nvlist_dst != 0 && 2141 (error = dsl_prop_get_all(os, &nv)) == 0) { 2142 dmu_objset_stats(os, nv); 2143 /* 2144 * NB: zvol_get_stats() will read the objset contents, 2145 * which we aren't supposed to do with a 2146 * DS_MODE_USER hold, because it could be 2147 * inconsistent. So this is a bit of a workaround... 2148 * XXX reading with out owning 2149 */ 2150 if (!zc->zc_objset_stats.dds_inconsistent && 2151 dmu_objset_type(os) == DMU_OST_ZVOL) { 2152 error = zvol_get_stats(os, nv); 2153 if (error == EIO) 2154 return (error); 2155 VERIFY0(error); 2156 } 2157 error = put_nvlist(zc, nv); 2158 nvlist_free(nv); 2159 } 2160 2161 return (error); 2162 } 2163 2164 /* 2165 * inputs: 2166 * zc_name name of filesystem 2167 * zc_nvlist_dst_size size of buffer for property nvlist 2168 * 2169 * outputs: 2170 * zc_objset_stats stats 2171 * zc_nvlist_dst property nvlist 2172 * zc_nvlist_dst_size size of property nvlist 2173 */ 2174 static int 2175 zfs_ioc_objset_stats(zfs_cmd_t *zc) 2176 { 2177 objset_t *os; 2178 int error; 2179 2180 error = dmu_objset_hold(zc->zc_name, FTAG, &os); 2181 if (error == 0) { 2182 error = zfs_ioc_objset_stats_impl(zc, os); 2183 dmu_objset_rele(os, FTAG); 2184 } 2185 2186 if (error == ENOMEM) 2187 error = 0; 2188 return (error); 2189 } 2190 2191 /* 2192 * inputs: 2193 * zc_name name of filesystem 2194 * zc_nvlist_dst_size size of buffer for property nvlist 2195 * 2196 * outputs: 2197 * zc_nvlist_dst received property nvlist 2198 * zc_nvlist_dst_size size of received property nvlist 2199 * 2200 * Gets received properties (distinct from local properties on or after 2201 * SPA_VERSION_RECVD_PROPS) for callers who want to differentiate received from 2202 * local property values. 2203 */ 2204 static int 2205 zfs_ioc_objset_recvd_props(zfs_cmd_t *zc) 2206 { 2207 int error = 0; 2208 nvlist_t *nv; 2209 2210 /* 2211 * Without this check, we would return local property values if the 2212 * caller has not already received properties on or after 2213 * SPA_VERSION_RECVD_PROPS. 2214 */ 2215 if (!dsl_prop_get_hasrecvd(zc->zc_name)) 2216 return (SET_ERROR(ENOTSUP)); 2217 2218 if (zc->zc_nvlist_dst != 0 && 2219 (error = dsl_prop_get_received(zc->zc_name, &nv)) == 0) { 2220 error = put_nvlist(zc, nv); 2221 nvlist_free(nv); 2222 } 2223 2224 return (error); 2225 } 2226 2227 static int 2228 nvl_add_zplprop(objset_t *os, nvlist_t *props, zfs_prop_t prop) 2229 { 2230 uint64_t value; 2231 int error; 2232 2233 /* 2234 * zfs_get_zplprop() will either find a value or give us 2235 * the default value (if there is one). 2236 */ 2237 if ((error = zfs_get_zplprop(os, prop, &value)) != 0) 2238 return (error); 2239 VERIFY(nvlist_add_uint64(props, zfs_prop_to_name(prop), value) == 0); 2240 return (0); 2241 } 2242 2243 /* 2244 * inputs: 2245 * zc_name name of filesystem 2246 * zc_nvlist_dst_size size of buffer for zpl property nvlist 2247 * 2248 * outputs: 2249 * zc_nvlist_dst zpl property nvlist 2250 * zc_nvlist_dst_size size of zpl property nvlist 2251 */ 2252 static int 2253 zfs_ioc_objset_zplprops(zfs_cmd_t *zc) 2254 { 2255 objset_t *os; 2256 int err; 2257 2258 /* XXX reading without owning */ 2259 if (err = dmu_objset_hold(zc->zc_name, FTAG, &os)) 2260 return (err); 2261 2262 dmu_objset_fast_stat(os, &zc->zc_objset_stats); 2263 2264 /* 2265 * NB: nvl_add_zplprop() will read the objset contents, 2266 * which we aren't supposed to do with a DS_MODE_USER 2267 * hold, because it could be inconsistent. 2268 */ 2269 if (zc->zc_nvlist_dst != 0 && 2270 !zc->zc_objset_stats.dds_inconsistent && 2271 dmu_objset_type(os) == DMU_OST_ZFS) { 2272 nvlist_t *nv; 2273 2274 VERIFY(nvlist_alloc(&nv, NV_UNIQUE_NAME, KM_SLEEP) == 0); 2275 if ((err = nvl_add_zplprop(os, nv, ZFS_PROP_VERSION)) == 0 && 2276 (err = nvl_add_zplprop(os, nv, ZFS_PROP_NORMALIZE)) == 0 && 2277 (err = nvl_add_zplprop(os, nv, ZFS_PROP_UTF8ONLY)) == 0 && 2278 (err = nvl_add_zplprop(os, nv, ZFS_PROP_CASE)) == 0) 2279 err = put_nvlist(zc, nv); 2280 nvlist_free(nv); 2281 } else { 2282 err = SET_ERROR(ENOENT); 2283 } 2284 dmu_objset_rele(os, FTAG); 2285 return (err); 2286 } 2287 2288 boolean_t 2289 dataset_name_hidden(const char *name) 2290 { 2291 /* 2292 * Skip over datasets that are not visible in this zone, 2293 * internal datasets (which have a $ in their name), and 2294 * temporary datasets (which have a % in their name). 2295 */ 2296 if (strchr(name, '$') != NULL) 2297 return (B_TRUE); 2298 if (strchr(name, '%') != NULL) 2299 return (B_TRUE); 2300 if (!INGLOBALZONE(curthread) && !zone_dataset_visible(name, NULL)) 2301 return (B_TRUE); 2302 return (B_FALSE); 2303 } 2304 2305 /* 2306 * inputs: 2307 * zc_name name of filesystem 2308 * zc_cookie zap cursor 2309 * zc_nvlist_dst_size size of buffer for property nvlist 2310 * 2311 * outputs: 2312 * zc_name name of next filesystem 2313 * zc_cookie zap cursor 2314 * zc_objset_stats stats 2315 * zc_nvlist_dst property nvlist 2316 * zc_nvlist_dst_size size of property nvlist 2317 */ 2318 static int 2319 zfs_ioc_dataset_list_next(zfs_cmd_t *zc) 2320 { 2321 objset_t *os; 2322 int error; 2323 char *p; 2324 size_t orig_len = strlen(zc->zc_name); 2325 2326 top: 2327 if (error = dmu_objset_hold(zc->zc_name, FTAG, &os)) { 2328 if (error == ENOENT) 2329 error = SET_ERROR(ESRCH); 2330 return (error); 2331 } 2332 2333 p = strrchr(zc->zc_name, '/'); 2334 if (p == NULL || p[1] != '\0') 2335 (void) strlcat(zc->zc_name, "/", sizeof (zc->zc_name)); 2336 p = zc->zc_name + strlen(zc->zc_name); 2337 2338 do { 2339 error = dmu_dir_list_next(os, 2340 sizeof (zc->zc_name) - (p - zc->zc_name), p, 2341 NULL, &zc->zc_cookie); 2342 if (error == ENOENT) 2343 error = SET_ERROR(ESRCH); 2344 } while (error == 0 && dataset_name_hidden(zc->zc_name)); 2345 dmu_objset_rele(os, FTAG); 2346 2347 /* 2348 * If it's an internal dataset (ie. with a '$' in its name), 2349 * don't try to get stats for it, otherwise we'll return ENOENT. 2350 */ 2351 if (error == 0 && strchr(zc->zc_name, '$') == NULL) { 2352 error = zfs_ioc_objset_stats(zc); /* fill in the stats */ 2353 if (error == ENOENT) { 2354 /* We lost a race with destroy, get the next one. */ 2355 zc->zc_name[orig_len] = '\0'; 2356 goto top; 2357 } 2358 } 2359 return (error); 2360 } 2361 2362 /* 2363 * inputs: 2364 * zc_name name of filesystem 2365 * zc_cookie zap cursor 2366 * zc_nvlist_dst_size size of buffer for property nvlist 2367 * zc_simple when set, only name is requested 2368 * 2369 * outputs: 2370 * zc_name name of next snapshot 2371 * zc_objset_stats stats 2372 * zc_nvlist_dst property nvlist 2373 * zc_nvlist_dst_size size of property nvlist 2374 */ 2375 static int 2376 zfs_ioc_snapshot_list_next(zfs_cmd_t *zc) 2377 { 2378 objset_t *os; 2379 int error; 2380 2381 error = dmu_objset_hold(zc->zc_name, FTAG, &os); 2382 if (error != 0) { 2383 return (error == ENOENT ? ESRCH : error); 2384 } 2385 2386 /* 2387 * A dataset name of maximum length cannot have any snapshots, 2388 * so exit immediately. 2389 */ 2390 if (strlcat(zc->zc_name, "@", sizeof (zc->zc_name)) >= 2391 ZFS_MAX_DATASET_NAME_LEN) { 2392 dmu_objset_rele(os, FTAG); 2393 return (SET_ERROR(ESRCH)); 2394 } 2395 2396 error = dmu_snapshot_list_next(os, 2397 sizeof (zc->zc_name) - strlen(zc->zc_name), 2398 zc->zc_name + strlen(zc->zc_name), &zc->zc_obj, &zc->zc_cookie, 2399 NULL); 2400 2401 if (error == 0 && !zc->zc_simple) { 2402 dsl_dataset_t *ds; 2403 dsl_pool_t *dp = os->os_dsl_dataset->ds_dir->dd_pool; 2404 2405 error = dsl_dataset_hold_obj(dp, zc->zc_obj, FTAG, &ds); 2406 if (error == 0) { 2407 objset_t *ossnap; 2408 2409 error = dmu_objset_from_ds(ds, &ossnap); 2410 if (error == 0) 2411 error = zfs_ioc_objset_stats_impl(zc, ossnap); 2412 dsl_dataset_rele(ds, FTAG); 2413 } 2414 } else if (error == ENOENT) { 2415 error = SET_ERROR(ESRCH); 2416 } 2417 2418 dmu_objset_rele(os, FTAG); 2419 /* if we failed, undo the @ that we tacked on to zc_name */ 2420 if (error != 0) 2421 *strchr(zc->zc_name, '@') = '\0'; 2422 return (error); 2423 } 2424 2425 static int 2426 zfs_prop_set_userquota(const char *dsname, nvpair_t *pair) 2427 { 2428 const char *propname = nvpair_name(pair); 2429 uint64_t *valary; 2430 unsigned int vallen; 2431 const char *domain; 2432 char *dash; 2433 zfs_userquota_prop_t type; 2434 uint64_t rid; 2435 uint64_t quota; 2436 zfsvfs_t *zfsvfs; 2437 int err; 2438 2439 if (nvpair_type(pair) == DATA_TYPE_NVLIST) { 2440 nvlist_t *attrs; 2441 VERIFY(nvpair_value_nvlist(pair, &attrs) == 0); 2442 if (nvlist_lookup_nvpair(attrs, ZPROP_VALUE, 2443 &pair) != 0) 2444 return (SET_ERROR(EINVAL)); 2445 } 2446 2447 /* 2448 * A correctly constructed propname is encoded as 2449 * userquota@<rid>-<domain>. 2450 */ 2451 if ((dash = strchr(propname, '-')) == NULL || 2452 nvpair_value_uint64_array(pair, &valary, &vallen) != 0 || 2453 vallen != 3) 2454 return (SET_ERROR(EINVAL)); 2455 2456 domain = dash + 1; 2457 type = valary[0]; 2458 rid = valary[1]; 2459 quota = valary[2]; 2460 2461 err = zfsvfs_hold(dsname, FTAG, &zfsvfs, B_FALSE); 2462 if (err == 0) { 2463 err = zfs_set_userquota(zfsvfs, type, domain, rid, quota); 2464 zfsvfs_rele(zfsvfs, FTAG); 2465 } 2466 2467 return (err); 2468 } 2469 2470 /* 2471 * If the named property is one that has a special function to set its value, 2472 * return 0 on success and a positive error code on failure; otherwise if it is 2473 * not one of the special properties handled by this function, return -1. 2474 * 2475 * XXX: It would be better for callers of the property interface if we handled 2476 * these special cases in dsl_prop.c (in the dsl layer). 2477 */ 2478 static int 2479 zfs_prop_set_special(const char *dsname, zprop_source_t source, 2480 nvpair_t *pair) 2481 { 2482 const char *propname = nvpair_name(pair); 2483 zfs_prop_t prop = zfs_name_to_prop(propname); 2484 uint64_t intval; 2485 int err = -1; 2486 2487 if (prop == ZPROP_INVAL) { 2488 if (zfs_prop_userquota(propname)) 2489 return (zfs_prop_set_userquota(dsname, pair)); 2490 return (-1); 2491 } 2492 2493 if (nvpair_type(pair) == DATA_TYPE_NVLIST) { 2494 nvlist_t *attrs; 2495 VERIFY(nvpair_value_nvlist(pair, &attrs) == 0); 2496 VERIFY(nvlist_lookup_nvpair(attrs, ZPROP_VALUE, 2497 &pair) == 0); 2498 } 2499 2500 if (zfs_prop_get_type(prop) == PROP_TYPE_STRING) 2501 return (-1); 2502 2503 VERIFY(0 == nvpair_value_uint64(pair, &intval)); 2504 2505 switch (prop) { 2506 case ZFS_PROP_QUOTA: 2507 err = dsl_dir_set_quota(dsname, source, intval); 2508 break; 2509 case ZFS_PROP_REFQUOTA: 2510 err = dsl_dataset_set_refquota(dsname, source, intval); 2511 break; 2512 case ZFS_PROP_FILESYSTEM_LIMIT: 2513 case ZFS_PROP_SNAPSHOT_LIMIT: 2514 if (intval == UINT64_MAX) { 2515 /* clearing the limit, just do it */ 2516 err = 0; 2517 } else { 2518 err = dsl_dir_activate_fs_ss_limit(dsname); 2519 } 2520 /* 2521 * Set err to -1 to force the zfs_set_prop_nvlist code down the 2522 * default path to set the value in the nvlist. 2523 */ 2524 if (err == 0) 2525 err = -1; 2526 break; 2527 case ZFS_PROP_RESERVATION: 2528 err = dsl_dir_set_reservation(dsname, source, intval); 2529 break; 2530 case ZFS_PROP_REFRESERVATION: 2531 err = dsl_dataset_set_refreservation(dsname, source, intval); 2532 break; 2533 case ZFS_PROP_VOLSIZE: 2534 err = zvol_set_volsize(dsname, intval); 2535 break; 2536 case ZFS_PROP_VERSION: 2537 { 2538 zfsvfs_t *zfsvfs; 2539 2540 if ((err = zfsvfs_hold(dsname, FTAG, &zfsvfs, B_TRUE)) != 0) 2541 break; 2542 2543 err = zfs_set_version(zfsvfs, intval); 2544 zfsvfs_rele(zfsvfs, FTAG); 2545 2546 if (err == 0 && intval >= ZPL_VERSION_USERSPACE) { 2547 zfs_cmd_t *zc; 2548 2549 zc = kmem_zalloc(sizeof (zfs_cmd_t), KM_SLEEP); 2550 (void) strcpy(zc->zc_name, dsname); 2551 (void) zfs_ioc_userspace_upgrade(zc); 2552 kmem_free(zc, sizeof (zfs_cmd_t)); 2553 } 2554 break; 2555 } 2556 default: 2557 err = -1; 2558 } 2559 2560 return (err); 2561 } 2562 2563 /* 2564 * This function is best effort. If it fails to set any of the given properties, 2565 * it continues to set as many as it can and returns the last error 2566 * encountered. If the caller provides a non-NULL errlist, it will be filled in 2567 * with the list of names of all the properties that failed along with the 2568 * corresponding error numbers. 2569 * 2570 * If every property is set successfully, zero is returned and errlist is not 2571 * modified. 2572 */ 2573 int 2574 zfs_set_prop_nvlist(const char *dsname, zprop_source_t source, nvlist_t *nvl, 2575 nvlist_t *errlist) 2576 { 2577 nvpair_t *pair; 2578 nvpair_t *propval; 2579 int rv = 0; 2580 uint64_t intval; 2581 char *strval; 2582 nvlist_t *genericnvl = fnvlist_alloc(); 2583 nvlist_t *retrynvl = fnvlist_alloc(); 2584 2585 retry: 2586 pair = NULL; 2587 while ((pair = nvlist_next_nvpair(nvl, pair)) != NULL) { 2588 const char *propname = nvpair_name(pair); 2589 zfs_prop_t prop = zfs_name_to_prop(propname); 2590 int err = 0; 2591 2592 /* decode the property value */ 2593 propval = pair; 2594 if (nvpair_type(pair) == DATA_TYPE_NVLIST) { 2595 nvlist_t *attrs; 2596 attrs = fnvpair_value_nvlist(pair); 2597 if (nvlist_lookup_nvpair(attrs, ZPROP_VALUE, 2598 &propval) != 0) 2599 err = SET_ERROR(EINVAL); 2600 } 2601 2602 /* Validate value type */ 2603 if (err == 0 && prop == ZPROP_INVAL) { 2604 if (zfs_prop_user(propname)) { 2605 if (nvpair_type(propval) != DATA_TYPE_STRING) 2606 err = SET_ERROR(EINVAL); 2607 } else if (zfs_prop_userquota(propname)) { 2608 if (nvpair_type(propval) != 2609 DATA_TYPE_UINT64_ARRAY) 2610 err = SET_ERROR(EINVAL); 2611 } else { 2612 err = SET_ERROR(EINVAL); 2613 } 2614 } else if (err == 0) { 2615 if (nvpair_type(propval) == DATA_TYPE_STRING) { 2616 if (zfs_prop_get_type(prop) != PROP_TYPE_STRING) 2617 err = SET_ERROR(EINVAL); 2618 } else if (nvpair_type(propval) == DATA_TYPE_UINT64) { 2619 const char *unused; 2620 2621 intval = fnvpair_value_uint64(propval); 2622 2623 switch (zfs_prop_get_type(prop)) { 2624 case PROP_TYPE_NUMBER: 2625 break; 2626 case PROP_TYPE_STRING: 2627 err = SET_ERROR(EINVAL); 2628 break; 2629 case PROP_TYPE_INDEX: 2630 if (zfs_prop_index_to_string(prop, 2631 intval, &unused) != 0) 2632 err = SET_ERROR(EINVAL); 2633 break; 2634 default: 2635 cmn_err(CE_PANIC, 2636 "unknown property type"); 2637 } 2638 } else { 2639 err = SET_ERROR(EINVAL); 2640 } 2641 } 2642 2643 /* Validate permissions */ 2644 if (err == 0) 2645 err = zfs_check_settable(dsname, pair, CRED()); 2646 2647 if (err == 0) { 2648 err = zfs_prop_set_special(dsname, source, pair); 2649 if (err == -1) { 2650 /* 2651 * For better performance we build up a list of 2652 * properties to set in a single transaction. 2653 */ 2654 err = nvlist_add_nvpair(genericnvl, pair); 2655 } else if (err != 0 && nvl != retrynvl) { 2656 /* 2657 * This may be a spurious error caused by 2658 * receiving quota and reservation out of order. 2659 * Try again in a second pass. 2660 */ 2661 err = nvlist_add_nvpair(retrynvl, pair); 2662 } 2663 } 2664 2665 if (err != 0) { 2666 if (errlist != NULL) 2667 fnvlist_add_int32(errlist, propname, err); 2668 rv = err; 2669 } 2670 } 2671 2672 if (nvl != retrynvl && !nvlist_empty(retrynvl)) { 2673 nvl = retrynvl; 2674 goto retry; 2675 } 2676 2677 if (!nvlist_empty(genericnvl) && 2678 dsl_props_set(dsname, source, genericnvl) != 0) { 2679 /* 2680 * If this fails, we still want to set as many properties as we 2681 * can, so try setting them individually. 2682 */ 2683 pair = NULL; 2684 while ((pair = nvlist_next_nvpair(genericnvl, pair)) != NULL) { 2685 const char *propname = nvpair_name(pair); 2686 int err = 0; 2687 2688 propval = pair; 2689 if (nvpair_type(pair) == DATA_TYPE_NVLIST) { 2690 nvlist_t *attrs; 2691 attrs = fnvpair_value_nvlist(pair); 2692 propval = fnvlist_lookup_nvpair(attrs, 2693 ZPROP_VALUE); 2694 } 2695 2696 if (nvpair_type(propval) == DATA_TYPE_STRING) { 2697 strval = fnvpair_value_string(propval); 2698 err = dsl_prop_set_string(dsname, propname, 2699 source, strval); 2700 } else { 2701 intval = fnvpair_value_uint64(propval); 2702 err = dsl_prop_set_int(dsname, propname, source, 2703 intval); 2704 } 2705 2706 if (err != 0) { 2707 if (errlist != NULL) { 2708 fnvlist_add_int32(errlist, propname, 2709 err); 2710 } 2711 rv = err; 2712 } 2713 } 2714 } 2715 nvlist_free(genericnvl); 2716 nvlist_free(retrynvl); 2717 2718 return (rv); 2719 } 2720 2721 /* 2722 * Check that all the properties are valid user properties. 2723 */ 2724 static int 2725 zfs_check_userprops(const char *fsname, nvlist_t *nvl) 2726 { 2727 nvpair_t *pair = NULL; 2728 int error = 0; 2729 2730 while ((pair = nvlist_next_nvpair(nvl, pair)) != NULL) { 2731 const char *propname = nvpair_name(pair); 2732 2733 if (!zfs_prop_user(propname) || 2734 nvpair_type(pair) != DATA_TYPE_STRING) 2735 return (SET_ERROR(EINVAL)); 2736 2737 if (error = zfs_secpolicy_write_perms(fsname, 2738 ZFS_DELEG_PERM_USERPROP, CRED())) 2739 return (error); 2740 2741 if (strlen(propname) >= ZAP_MAXNAMELEN) 2742 return (SET_ERROR(ENAMETOOLONG)); 2743 2744 if (strlen(fnvpair_value_string(pair)) >= ZAP_MAXVALUELEN) 2745 return (E2BIG); 2746 } 2747 return (0); 2748 } 2749 2750 static void 2751 props_skip(nvlist_t *props, nvlist_t *skipped, nvlist_t **newprops) 2752 { 2753 nvpair_t *pair; 2754 2755 VERIFY(nvlist_alloc(newprops, NV_UNIQUE_NAME, KM_SLEEP) == 0); 2756 2757 pair = NULL; 2758 while ((pair = nvlist_next_nvpair(props, pair)) != NULL) { 2759 if (nvlist_exists(skipped, nvpair_name(pair))) 2760 continue; 2761 2762 VERIFY(nvlist_add_nvpair(*newprops, pair) == 0); 2763 } 2764 } 2765 2766 static int 2767 clear_received_props(const char *dsname, nvlist_t *props, 2768 nvlist_t *skipped) 2769 { 2770 int err = 0; 2771 nvlist_t *cleared_props = NULL; 2772 props_skip(props, skipped, &cleared_props); 2773 if (!nvlist_empty(cleared_props)) { 2774 /* 2775 * Acts on local properties until the dataset has received 2776 * properties at least once on or after SPA_VERSION_RECVD_PROPS. 2777 */ 2778 zprop_source_t flags = (ZPROP_SRC_NONE | 2779 (dsl_prop_get_hasrecvd(dsname) ? ZPROP_SRC_RECEIVED : 0)); 2780 err = zfs_set_prop_nvlist(dsname, flags, cleared_props, NULL); 2781 } 2782 nvlist_free(cleared_props); 2783 return (err); 2784 } 2785 2786 /* 2787 * inputs: 2788 * zc_name name of filesystem 2789 * zc_value name of property to set 2790 * zc_nvlist_src{_size} nvlist of properties to apply 2791 * zc_cookie received properties flag 2792 * 2793 * outputs: 2794 * zc_nvlist_dst{_size} error for each unapplied received property 2795 */ 2796 static int 2797 zfs_ioc_set_prop(zfs_cmd_t *zc) 2798 { 2799 nvlist_t *nvl; 2800 boolean_t received = zc->zc_cookie; 2801 zprop_source_t source = (received ? ZPROP_SRC_RECEIVED : 2802 ZPROP_SRC_LOCAL); 2803 nvlist_t *errors; 2804 int error; 2805 2806 if ((error = get_nvlist(zc->zc_nvlist_src, zc->zc_nvlist_src_size, 2807 zc->zc_iflags, &nvl)) != 0) 2808 return (error); 2809 2810 if (received) { 2811 nvlist_t *origprops; 2812 2813 if (dsl_prop_get_received(zc->zc_name, &origprops) == 0) { 2814 (void) clear_received_props(zc->zc_name, 2815 origprops, nvl); 2816 nvlist_free(origprops); 2817 } 2818 2819 error = dsl_prop_set_hasrecvd(zc->zc_name); 2820 } 2821 2822 errors = fnvlist_alloc(); 2823 if (error == 0) 2824 error = zfs_set_prop_nvlist(zc->zc_name, source, nvl, errors); 2825 2826 if (zc->zc_nvlist_dst != 0 && errors != NULL) { 2827 (void) put_nvlist(zc, errors); 2828 } 2829 2830 nvlist_free(errors); 2831 nvlist_free(nvl); 2832 return (error); 2833 } 2834 2835 /* 2836 * inputs: 2837 * zc_name name of filesystem 2838 * zc_value name of property to inherit 2839 * zc_cookie revert to received value if TRUE 2840 * 2841 * outputs: none 2842 */ 2843 static int 2844 zfs_ioc_inherit_prop(zfs_cmd_t *zc) 2845 { 2846 const char *propname = zc->zc_value; 2847 zfs_prop_t prop = zfs_name_to_prop(propname); 2848 boolean_t received = zc->zc_cookie; 2849 zprop_source_t source = (received 2850 ? ZPROP_SRC_NONE /* revert to received value, if any */ 2851 : ZPROP_SRC_INHERITED); /* explicitly inherit */ 2852 2853 if (received) { 2854 nvlist_t *dummy; 2855 nvpair_t *pair; 2856 zprop_type_t type; 2857 int err; 2858 2859 /* 2860 * zfs_prop_set_special() expects properties in the form of an 2861 * nvpair with type info. 2862 */ 2863 if (prop == ZPROP_INVAL) { 2864 if (!zfs_prop_user(propname)) 2865 return (SET_ERROR(EINVAL)); 2866 2867 type = PROP_TYPE_STRING; 2868 } else if (prop == ZFS_PROP_VOLSIZE || 2869 prop == ZFS_PROP_VERSION) { 2870 return (SET_ERROR(EINVAL)); 2871 } else { 2872 type = zfs_prop_get_type(prop); 2873 } 2874 2875 VERIFY(nvlist_alloc(&dummy, NV_UNIQUE_NAME, KM_SLEEP) == 0); 2876 2877 switch (type) { 2878 case PROP_TYPE_STRING: 2879 VERIFY(0 == nvlist_add_string(dummy, propname, "")); 2880 break; 2881 case PROP_TYPE_NUMBER: 2882 case PROP_TYPE_INDEX: 2883 VERIFY(0 == nvlist_add_uint64(dummy, propname, 0)); 2884 break; 2885 default: 2886 nvlist_free(dummy); 2887 return (SET_ERROR(EINVAL)); 2888 } 2889 2890 pair = nvlist_next_nvpair(dummy, NULL); 2891 err = zfs_prop_set_special(zc->zc_name, source, pair); 2892 nvlist_free(dummy); 2893 if (err != -1) 2894 return (err); /* special property already handled */ 2895 } else { 2896 /* 2897 * Only check this in the non-received case. We want to allow 2898 * 'inherit -S' to revert non-inheritable properties like quota 2899 * and reservation to the received or default values even though 2900 * they are not considered inheritable. 2901 */ 2902 if (prop != ZPROP_INVAL && !zfs_prop_inheritable(prop)) 2903 return (SET_ERROR(EINVAL)); 2904 } 2905 2906 /* property name has been validated by zfs_secpolicy_inherit_prop() */ 2907 return (dsl_prop_inherit(zc->zc_name, zc->zc_value, source)); 2908 } 2909 2910 static int 2911 zfs_ioc_pool_set_props(zfs_cmd_t *zc) 2912 { 2913 nvlist_t *props; 2914 spa_t *spa; 2915 int error; 2916 nvpair_t *pair; 2917 2918 if (error = get_nvlist(zc->zc_nvlist_src, zc->zc_nvlist_src_size, 2919 zc->zc_iflags, &props)) 2920 return (error); 2921 2922 /* 2923 * If the only property is the configfile, then just do a spa_lookup() 2924 * to handle the faulted case. 2925 */ 2926 pair = nvlist_next_nvpair(props, NULL); 2927 if (pair != NULL && strcmp(nvpair_name(pair), 2928 zpool_prop_to_name(ZPOOL_PROP_CACHEFILE)) == 0 && 2929 nvlist_next_nvpair(props, pair) == NULL) { 2930 mutex_enter(&spa_namespace_lock); 2931 if ((spa = spa_lookup(zc->zc_name)) != NULL) { 2932 spa_configfile_set(spa, props, B_FALSE); 2933 spa_config_sync(spa, B_FALSE, B_TRUE); 2934 } 2935 mutex_exit(&spa_namespace_lock); 2936 if (spa != NULL) { 2937 nvlist_free(props); 2938 return (0); 2939 } 2940 } 2941 2942 if ((error = spa_open(zc->zc_name, &spa, FTAG)) != 0) { 2943 nvlist_free(props); 2944 return (error); 2945 } 2946 2947 error = spa_prop_set(spa, props); 2948 2949 nvlist_free(props); 2950 spa_close(spa, FTAG); 2951 2952 return (error); 2953 } 2954 2955 static int 2956 zfs_ioc_pool_get_props(zfs_cmd_t *zc) 2957 { 2958 spa_t *spa; 2959 int error; 2960 nvlist_t *nvp = NULL; 2961 2962 if ((error = spa_open(zc->zc_name, &spa, FTAG)) != 0) { 2963 /* 2964 * If the pool is faulted, there may be properties we can still 2965 * get (such as altroot and cachefile), so attempt to get them 2966 * anyway. 2967 */ 2968 mutex_enter(&spa_namespace_lock); 2969 if ((spa = spa_lookup(zc->zc_name)) != NULL) 2970 error = spa_prop_get(spa, &nvp); 2971 mutex_exit(&spa_namespace_lock); 2972 } else { 2973 error = spa_prop_get(spa, &nvp); 2974 spa_close(spa, FTAG); 2975 } 2976 2977 if (error == 0 && zc->zc_nvlist_dst != 0) 2978 error = put_nvlist(zc, nvp); 2979 else 2980 error = SET_ERROR(EFAULT); 2981 2982 nvlist_free(nvp); 2983 return (error); 2984 } 2985 2986 /* 2987 * inputs: 2988 * zc_name name of filesystem 2989 * zc_nvlist_src{_size} nvlist of delegated permissions 2990 * zc_perm_action allow/unallow flag 2991 * 2992 * outputs: none 2993 */ 2994 static int 2995 zfs_ioc_set_fsacl(zfs_cmd_t *zc) 2996 { 2997 int error; 2998 nvlist_t *fsaclnv = NULL; 2999 3000 if ((error = get_nvlist(zc->zc_nvlist_src, zc->zc_nvlist_src_size, 3001 zc->zc_iflags, &fsaclnv)) != 0) 3002 return (error); 3003 3004 /* 3005 * Verify nvlist is constructed correctly 3006 */ 3007 if ((error = zfs_deleg_verify_nvlist(fsaclnv)) != 0) { 3008 nvlist_free(fsaclnv); 3009 return (SET_ERROR(EINVAL)); 3010 } 3011 3012 /* 3013 * If we don't have PRIV_SYS_MOUNT, then validate 3014 * that user is allowed to hand out each permission in 3015 * the nvlist(s) 3016 */ 3017 3018 error = secpolicy_zfs(CRED()); 3019 if (error != 0) { 3020 if (zc->zc_perm_action == B_FALSE) { 3021 error = dsl_deleg_can_allow(zc->zc_name, 3022 fsaclnv, CRED()); 3023 } else { 3024 error = dsl_deleg_can_unallow(zc->zc_name, 3025 fsaclnv, CRED()); 3026 } 3027 } 3028 3029 if (error == 0) 3030 error = dsl_deleg_set(zc->zc_name, fsaclnv, zc->zc_perm_action); 3031 3032 nvlist_free(fsaclnv); 3033 return (error); 3034 } 3035 3036 /* 3037 * inputs: 3038 * zc_name name of filesystem 3039 * 3040 * outputs: 3041 * zc_nvlist_src{_size} nvlist of delegated permissions 3042 */ 3043 static int 3044 zfs_ioc_get_fsacl(zfs_cmd_t *zc) 3045 { 3046 nvlist_t *nvp; 3047 int error; 3048 3049 if ((error = dsl_deleg_get(zc->zc_name, &nvp)) == 0) { 3050 error = put_nvlist(zc, nvp); 3051 nvlist_free(nvp); 3052 } 3053 3054 return (error); 3055 } 3056 3057 /* 3058 * Search the vfs list for a specified resource. Returns a pointer to it 3059 * or NULL if no suitable entry is found. The caller of this routine 3060 * is responsible for releasing the returned vfs pointer. 3061 */ 3062 static vfs_t * 3063 zfs_get_vfs(const char *resource) 3064 { 3065 vfs_t *vfsp; 3066 3067 #ifdef __FreeBSD__ 3068 mtx_lock(&mountlist_mtx); 3069 TAILQ_FOREACH(vfsp, &mountlist, mnt_list) { 3070 if (strcmp(refstr_value(vfsp->vfs_resource), resource) == 0) { 3071 if (vfs_busy(vfsp, MBF_MNTLSTLOCK) != 0) 3072 vfsp = NULL; 3073 break; 3074 } 3075 } 3076 if (vfsp == NULL) 3077 mtx_unlock(&mountlist_mtx); 3078 #endif 3079 #ifdef __NetBSD__ 3080 mount_iterator_t *iter; 3081 3082 mountlist_iterator_init(&iter); 3083 while ((vfsp = mountlist_iterator_next(iter)) != NULL) { 3084 if (strcmp(refstr_value(vfsp->vfs_resource), resource) == 0) { 3085 if (vfs_busy(vfsp, 0) != 0) 3086 vfsp = NULL; 3087 break; 3088 } 3089 } 3090 mountlist_iterator_destroy(iter); 3091 #endif 3092 3093 return (vfsp); 3094 } 3095 3096 /* ARGSUSED */ 3097 static void 3098 zfs_create_cb(objset_t *os, void *arg, cred_t *cr, dmu_tx_t *tx) 3099 { 3100 zfs_creat_t *zct = arg; 3101 3102 zfs_create_fs(os, cr, zct->zct_zplprops, tx); 3103 } 3104 3105 #define ZFS_PROP_UNDEFINED ((uint64_t)-1) 3106 3107 /* 3108 * inputs: 3109 * os parent objset pointer (NULL if root fs) 3110 * fuids_ok fuids allowed in this version of the spa? 3111 * sa_ok SAs allowed in this version of the spa? 3112 * createprops list of properties requested by creator 3113 * 3114 * outputs: 3115 * zplprops values for the zplprops we attach to the master node object 3116 * is_ci true if requested file system will be purely case-insensitive 3117 * 3118 * Determine the settings for utf8only, normalization and 3119 * casesensitivity. Specific values may have been requested by the 3120 * creator and/or we can inherit values from the parent dataset. If 3121 * the file system is of too early a vintage, a creator can not 3122 * request settings for these properties, even if the requested 3123 * setting is the default value. We don't actually want to create dsl 3124 * properties for these, so remove them from the source nvlist after 3125 * processing. 3126 */ 3127 static int 3128 zfs_fill_zplprops_impl(objset_t *os, uint64_t zplver, 3129 boolean_t fuids_ok, boolean_t sa_ok, nvlist_t *createprops, 3130 nvlist_t *zplprops, boolean_t *is_ci) 3131 { 3132 uint64_t sense = ZFS_PROP_UNDEFINED; 3133 uint64_t norm = ZFS_PROP_UNDEFINED; 3134 uint64_t u8 = ZFS_PROP_UNDEFINED; 3135 3136 ASSERT(zplprops != NULL); 3137 3138 /* 3139 * Pull out creator prop choices, if any. 3140 */ 3141 if (createprops) { 3142 (void) nvlist_lookup_uint64(createprops, 3143 zfs_prop_to_name(ZFS_PROP_VERSION), &zplver); 3144 (void) nvlist_lookup_uint64(createprops, 3145 zfs_prop_to_name(ZFS_PROP_NORMALIZE), &norm); 3146 (void) nvlist_remove_all(createprops, 3147 zfs_prop_to_name(ZFS_PROP_NORMALIZE)); 3148 (void) nvlist_lookup_uint64(createprops, 3149 zfs_prop_to_name(ZFS_PROP_UTF8ONLY), &u8); 3150 (void) nvlist_remove_all(createprops, 3151 zfs_prop_to_name(ZFS_PROP_UTF8ONLY)); 3152 (void) nvlist_lookup_uint64(createprops, 3153 zfs_prop_to_name(ZFS_PROP_CASE), &sense); 3154 (void) nvlist_remove_all(createprops, 3155 zfs_prop_to_name(ZFS_PROP_CASE)); 3156 } 3157 3158 /* 3159 * If the zpl version requested is whacky or the file system 3160 * or pool is version is too "young" to support normalization 3161 * and the creator tried to set a value for one of the props, 3162 * error out. 3163 */ 3164 if ((zplver < ZPL_VERSION_INITIAL || zplver > ZPL_VERSION) || 3165 (zplver >= ZPL_VERSION_FUID && !fuids_ok) || 3166 (zplver >= ZPL_VERSION_SA && !sa_ok) || 3167 (zplver < ZPL_VERSION_NORMALIZATION && 3168 (norm != ZFS_PROP_UNDEFINED || u8 != ZFS_PROP_UNDEFINED || 3169 sense != ZFS_PROP_UNDEFINED))) 3170 return (SET_ERROR(ENOTSUP)); 3171 3172 /* 3173 * Put the version in the zplprops 3174 */ 3175 VERIFY(nvlist_add_uint64(zplprops, 3176 zfs_prop_to_name(ZFS_PROP_VERSION), zplver) == 0); 3177 3178 if (norm == ZFS_PROP_UNDEFINED) 3179 VERIFY(zfs_get_zplprop(os, ZFS_PROP_NORMALIZE, &norm) == 0); 3180 VERIFY(nvlist_add_uint64(zplprops, 3181 zfs_prop_to_name(ZFS_PROP_NORMALIZE), norm) == 0); 3182 3183 /* 3184 * If we're normalizing, names must always be valid UTF-8 strings. 3185 */ 3186 if (norm) 3187 u8 = 1; 3188 if (u8 == ZFS_PROP_UNDEFINED) 3189 VERIFY(zfs_get_zplprop(os, ZFS_PROP_UTF8ONLY, &u8) == 0); 3190 VERIFY(nvlist_add_uint64(zplprops, 3191 zfs_prop_to_name(ZFS_PROP_UTF8ONLY), u8) == 0); 3192 3193 if (sense == ZFS_PROP_UNDEFINED) 3194 VERIFY(zfs_get_zplprop(os, ZFS_PROP_CASE, &sense) == 0); 3195 VERIFY(nvlist_add_uint64(zplprops, 3196 zfs_prop_to_name(ZFS_PROP_CASE), sense) == 0); 3197 3198 if (is_ci) 3199 *is_ci = (sense == ZFS_CASE_INSENSITIVE); 3200 3201 return (0); 3202 } 3203 3204 static int 3205 zfs_fill_zplprops(const char *dataset, nvlist_t *createprops, 3206 nvlist_t *zplprops, boolean_t *is_ci) 3207 { 3208 boolean_t fuids_ok, sa_ok; 3209 uint64_t zplver = ZPL_VERSION; 3210 objset_t *os = NULL; 3211 char parentname[ZFS_MAX_DATASET_NAME_LEN]; 3212 char *cp; 3213 spa_t *spa; 3214 uint64_t spa_vers; 3215 int error; 3216 3217 (void) strlcpy(parentname, dataset, sizeof (parentname)); 3218 cp = strrchr(parentname, '/'); 3219 ASSERT(cp != NULL); 3220 cp[0] = '\0'; 3221 3222 if ((error = spa_open(dataset, &spa, FTAG)) != 0) 3223 return (error); 3224 3225 spa_vers = spa_version(spa); 3226 spa_close(spa, FTAG); 3227 3228 zplver = zfs_zpl_version_map(spa_vers); 3229 fuids_ok = (zplver >= ZPL_VERSION_FUID); 3230 sa_ok = (zplver >= ZPL_VERSION_SA); 3231 3232 /* 3233 * Open parent object set so we can inherit zplprop values. 3234 */ 3235 if ((error = dmu_objset_hold(parentname, FTAG, &os)) != 0) 3236 return (error); 3237 3238 error = zfs_fill_zplprops_impl(os, zplver, fuids_ok, sa_ok, createprops, 3239 zplprops, is_ci); 3240 dmu_objset_rele(os, FTAG); 3241 return (error); 3242 } 3243 3244 static int 3245 zfs_fill_zplprops_root(uint64_t spa_vers, nvlist_t *createprops, 3246 nvlist_t *zplprops, boolean_t *is_ci) 3247 { 3248 boolean_t fuids_ok; 3249 boolean_t sa_ok; 3250 uint64_t zplver = ZPL_VERSION; 3251 int error; 3252 3253 zplver = zfs_zpl_version_map(spa_vers); 3254 fuids_ok = (zplver >= ZPL_VERSION_FUID); 3255 sa_ok = (zplver >= ZPL_VERSION_SA); 3256 3257 error = zfs_fill_zplprops_impl(NULL, zplver, fuids_ok, sa_ok, 3258 createprops, zplprops, is_ci); 3259 return (error); 3260 } 3261 3262 /* 3263 * innvl: { 3264 * "type" -> dmu_objset_type_t (int32) 3265 * (optional) "props" -> { prop -> value } 3266 * } 3267 * 3268 * outnvl: propname -> error code (int32) 3269 */ 3270 static int 3271 zfs_ioc_create(const char *fsname, nvlist_t *innvl, nvlist_t *outnvl) 3272 { 3273 int error = 0; 3274 zfs_creat_t zct = { 0 }; 3275 nvlist_t *nvprops = NULL; 3276 void (*cbfunc)(objset_t *os, void *arg, cred_t *cr, dmu_tx_t *tx); 3277 int32_t type32; 3278 dmu_objset_type_t type; 3279 boolean_t is_insensitive = B_FALSE; 3280 3281 if (nvlist_lookup_int32(innvl, "type", &type32) != 0) 3282 return (SET_ERROR(EINVAL)); 3283 type = type32; 3284 (void) nvlist_lookup_nvlist(innvl, "props", &nvprops); 3285 3286 switch (type) { 3287 case DMU_OST_ZFS: 3288 cbfunc = zfs_create_cb; 3289 break; 3290 3291 case DMU_OST_ZVOL: 3292 cbfunc = zvol_create_cb; 3293 break; 3294 3295 default: 3296 cbfunc = NULL; 3297 break; 3298 } 3299 if (strchr(fsname, '@') || 3300 strchr(fsname, '%')) 3301 return (SET_ERROR(EINVAL)); 3302 3303 zct.zct_props = nvprops; 3304 3305 if (cbfunc == NULL) 3306 return (SET_ERROR(EINVAL)); 3307 3308 if (type == DMU_OST_ZVOL) { 3309 uint64_t volsize, volblocksize; 3310 3311 if (nvprops == NULL) 3312 return (SET_ERROR(EINVAL)); 3313 if (nvlist_lookup_uint64(nvprops, 3314 zfs_prop_to_name(ZFS_PROP_VOLSIZE), &volsize) != 0) 3315 return (SET_ERROR(EINVAL)); 3316 3317 if ((error = nvlist_lookup_uint64(nvprops, 3318 zfs_prop_to_name(ZFS_PROP_VOLBLOCKSIZE), 3319 &volblocksize)) != 0 && error != ENOENT) 3320 return (SET_ERROR(EINVAL)); 3321 3322 if (error != 0) 3323 volblocksize = zfs_prop_default_numeric( 3324 ZFS_PROP_VOLBLOCKSIZE); 3325 3326 if ((error = zvol_check_volblocksize( 3327 volblocksize)) != 0 || 3328 (error = zvol_check_volsize(volsize, 3329 volblocksize)) != 0) 3330 return (error); 3331 } else if (type == DMU_OST_ZFS) { 3332 int error; 3333 3334 /* 3335 * We have to have normalization and 3336 * case-folding flags correct when we do the 3337 * file system creation, so go figure them out 3338 * now. 3339 */ 3340 VERIFY(nvlist_alloc(&zct.zct_zplprops, 3341 NV_UNIQUE_NAME, KM_SLEEP) == 0); 3342 error = zfs_fill_zplprops(fsname, nvprops, 3343 zct.zct_zplprops, &is_insensitive); 3344 if (error != 0) { 3345 nvlist_free(zct.zct_zplprops); 3346 return (error); 3347 } 3348 } 3349 3350 error = dmu_objset_create(fsname, type, 3351 is_insensitive ? DS_FLAG_CI_DATASET : 0, cbfunc, &zct); 3352 nvlist_free(zct.zct_zplprops); 3353 3354 /* 3355 * It would be nice to do this atomically. 3356 */ 3357 if (error == 0) { 3358 error = zfs_set_prop_nvlist(fsname, ZPROP_SRC_LOCAL, 3359 nvprops, outnvl); 3360 if (error != 0) 3361 (void) dsl_destroy_head(fsname); 3362 } 3363 if (error == 0 && type == DMU_OST_ZVOL) 3364 zvol_create_minors(fsname); 3365 return (error); 3366 } 3367 3368 /* 3369 * innvl: { 3370 * "origin" -> name of origin snapshot 3371 * (optional) "props" -> { prop -> value } 3372 * } 3373 * 3374 * outnvl: propname -> error code (int32) 3375 */ 3376 static int 3377 zfs_ioc_clone(const char *fsname, nvlist_t *innvl, nvlist_t *outnvl) 3378 { 3379 int error = 0; 3380 nvlist_t *nvprops = NULL; 3381 char *origin_name; 3382 3383 if (nvlist_lookup_string(innvl, "origin", &origin_name) != 0) 3384 return (SET_ERROR(EINVAL)); 3385 (void) nvlist_lookup_nvlist(innvl, "props", &nvprops); 3386 3387 if (strchr(fsname, '@') || 3388 strchr(fsname, '%')) 3389 return (SET_ERROR(EINVAL)); 3390 3391 if (dataset_namecheck(origin_name, NULL, NULL) != 0) 3392 return (SET_ERROR(EINVAL)); 3393 error = dmu_objset_clone(fsname, origin_name); 3394 if (error != 0) 3395 return (error); 3396 3397 /* 3398 * It would be nice to do this atomically. 3399 */ 3400 if (error == 0) { 3401 error = zfs_set_prop_nvlist(fsname, ZPROP_SRC_LOCAL, 3402 nvprops, outnvl); 3403 if (error != 0) 3404 (void) dsl_destroy_head(fsname); 3405 } 3406 if (error == 0) 3407 zvol_create_minors(fsname); 3408 return (error); 3409 } 3410 3411 /* 3412 * innvl: { 3413 * "snaps" -> { snapshot1, snapshot2 } 3414 * (optional) "props" -> { prop -> value (string) } 3415 * } 3416 * 3417 * outnvl: snapshot -> error code (int32) 3418 */ 3419 static int 3420 zfs_ioc_snapshot(const char *poolname, nvlist_t *innvl, nvlist_t *outnvl) 3421 { 3422 nvlist_t *snaps; 3423 nvlist_t *props = NULL; 3424 int error, poollen; 3425 nvpair_t *pair; 3426 3427 (void) nvlist_lookup_nvlist(innvl, "props", &props); 3428 if ((error = zfs_check_userprops(poolname, props)) != 0) 3429 return (error); 3430 3431 if (!nvlist_empty(props) && 3432 zfs_earlier_version(poolname, SPA_VERSION_SNAP_PROPS)) 3433 return (SET_ERROR(ENOTSUP)); 3434 3435 if (nvlist_lookup_nvlist(innvl, "snaps", &snaps) != 0) 3436 return (SET_ERROR(EINVAL)); 3437 poollen = strlen(poolname); 3438 for (pair = nvlist_next_nvpair(snaps, NULL); pair != NULL; 3439 pair = nvlist_next_nvpair(snaps, pair)) { 3440 const char *name = nvpair_name(pair); 3441 const char *cp = strchr(name, '@'); 3442 3443 /* 3444 * The snap name must contain an @, and the part after it must 3445 * contain only valid characters. 3446 */ 3447 if (cp == NULL || 3448 zfs_component_namecheck(cp + 1, NULL, NULL) != 0) 3449 return (SET_ERROR(EINVAL)); 3450 3451 /* 3452 * The snap must be in the specified pool. 3453 */ 3454 if (strncmp(name, poolname, poollen) != 0 || 3455 (name[poollen] != '/' && name[poollen] != '@')) 3456 return (SET_ERROR(EXDEV)); 3457 3458 /* This must be the only snap of this fs. */ 3459 for (nvpair_t *pair2 = nvlist_next_nvpair(snaps, pair); 3460 pair2 != NULL; pair2 = nvlist_next_nvpair(snaps, pair2)) { 3461 if (strncmp(name, nvpair_name(pair2), cp - name + 1) 3462 == 0) { 3463 return (SET_ERROR(EXDEV)); 3464 } 3465 } 3466 } 3467 3468 error = dsl_dataset_snapshot(snaps, props, outnvl); 3469 return (error); 3470 } 3471 3472 /* 3473 * innvl: "message" -> string 3474 */ 3475 /* ARGSUSED */ 3476 static int 3477 zfs_ioc_log_history(const char *unused, nvlist_t *innvl, nvlist_t *outnvl) 3478 { 3479 char *message; 3480 spa_t *spa; 3481 int error; 3482 char *poolname; 3483 3484 /* 3485 * The poolname in the ioctl is not set, we get it from the TSD, 3486 * which was set at the end of the last successful ioctl that allows 3487 * logging. The secpolicy func already checked that it is set. 3488 * Only one log ioctl is allowed after each successful ioctl, so 3489 * we clear the TSD here. 3490 */ 3491 poolname = tsd_get(zfs_allow_log_key); 3492 (void) tsd_set(zfs_allow_log_key, NULL); 3493 error = spa_open(poolname, &spa, FTAG); 3494 strfree(poolname); 3495 if (error != 0) 3496 return (error); 3497 3498 if (nvlist_lookup_string(innvl, "message", &message) != 0) { 3499 spa_close(spa, FTAG); 3500 return (SET_ERROR(EINVAL)); 3501 } 3502 3503 if (spa_version(spa) < SPA_VERSION_ZPOOL_HISTORY) { 3504 spa_close(spa, FTAG); 3505 return (SET_ERROR(ENOTSUP)); 3506 } 3507 3508 error = spa_history_log(spa, message); 3509 spa_close(spa, FTAG); 3510 return (error); 3511 } 3512 3513 #ifdef __FreeBSD__ 3514 static int 3515 zfs_ioc_nextboot(const char *unused, nvlist_t *innvl, nvlist_t *outnvl) 3516 { 3517 char name[MAXNAMELEN]; 3518 spa_t *spa; 3519 vdev_t *vd; 3520 char *command; 3521 uint64_t pool_guid; 3522 uint64_t vdev_guid; 3523 int error; 3524 3525 if (nvlist_lookup_uint64(innvl, 3526 ZPOOL_CONFIG_POOL_GUID, &pool_guid) != 0) 3527 return (EINVAL); 3528 if (nvlist_lookup_uint64(innvl, 3529 ZPOOL_CONFIG_GUID, &vdev_guid) != 0) 3530 return (EINVAL); 3531 if (nvlist_lookup_string(innvl, 3532 "command", &command) != 0) 3533 return (EINVAL); 3534 3535 mutex_enter(&spa_namespace_lock); 3536 spa = spa_by_guid(pool_guid, vdev_guid); 3537 if (spa != NULL) 3538 strcpy(name, spa_name(spa)); 3539 mutex_exit(&spa_namespace_lock); 3540 if (spa == NULL) 3541 return (ENOENT); 3542 3543 if ((error = spa_open(name, &spa, FTAG)) != 0) 3544 return (error); 3545 spa_vdev_state_enter(spa, SCL_ALL); 3546 vd = spa_lookup_by_guid(spa, vdev_guid, B_TRUE); 3547 if (vd == NULL) { 3548 (void) spa_vdev_state_exit(spa, NULL, ENXIO); 3549 spa_close(spa, FTAG); 3550 return (ENODEV); 3551 } 3552 error = vdev_label_write_pad2(vd, command, strlen(command)); 3553 (void) spa_vdev_state_exit(spa, NULL, 0); 3554 txg_wait_synced(spa->spa_dsl_pool, 0); 3555 spa_close(spa, FTAG); 3556 return (error); 3557 } 3558 #endif 3559 3560 /* 3561 * The dp_config_rwlock must not be held when calling this, because the 3562 * unmount may need to write out data. 3563 * 3564 * This function is best-effort. Callers must deal gracefully if it 3565 * remains mounted (or is remounted after this call). 3566 * 3567 * Returns 0 if the argument is not a snapshot, or it is not currently a 3568 * filesystem, or we were able to unmount it. Returns error code otherwise. 3569 */ 3570 int 3571 zfs_unmount_snap(const char *snapname) 3572 { 3573 vfs_t *vfsp; 3574 zfsvfs_t *zfsvfs; 3575 int err; 3576 3577 if (strchr(snapname, '@') == NULL) 3578 return (0); 3579 3580 vfsp = zfs_get_vfs(snapname); 3581 if (vfsp == NULL) 3582 return (0); 3583 3584 zfsvfs = vfsp->vfs_data; 3585 ASSERT(!dsl_pool_config_held(dmu_objset_pool(zfsvfs->z_os))); 3586 3587 err = vn_vfswlock(vfsp->vfs_vnodecovered); 3588 #ifdef illumos 3589 VFS_RELE(vfsp); 3590 #else 3591 vfs_unbusy(vfsp); 3592 #endif 3593 if (err != 0) 3594 return (SET_ERROR(err)); 3595 3596 /* 3597 * Always force the unmount for snapshots. 3598 */ 3599 3600 #ifdef illumos 3601 (void) dounmount(vfsp, MS_FORCE, kcred); 3602 #else 3603 vfs_ref(vfsp); 3604 (void) dounmount(vfsp, MS_FORCE, curthread); 3605 #endif 3606 return (0); 3607 } 3608 3609 /* ARGSUSED */ 3610 static int 3611 zfs_unmount_snap_cb(const char *snapname, void *arg) 3612 { 3613 return (zfs_unmount_snap(snapname)); 3614 } 3615 3616 /* 3617 * When a clone is destroyed, its origin may also need to be destroyed, 3618 * in which case it must be unmounted. This routine will do that unmount 3619 * if necessary. 3620 */ 3621 void 3622 zfs_destroy_unmount_origin(const char *fsname) 3623 { 3624 int error; 3625 objset_t *os; 3626 dsl_dataset_t *ds; 3627 3628 error = dmu_objset_hold(fsname, FTAG, &os); 3629 if (error != 0) 3630 return; 3631 ds = dmu_objset_ds(os); 3632 if (dsl_dir_is_clone(ds->ds_dir) && DS_IS_DEFER_DESTROY(ds->ds_prev)) { 3633 char originname[ZFS_MAX_DATASET_NAME_LEN]; 3634 dsl_dataset_name(ds->ds_prev, originname); 3635 dmu_objset_rele(os, FTAG); 3636 (void) zfs_unmount_snap(originname); 3637 } else { 3638 dmu_objset_rele(os, FTAG); 3639 } 3640 } 3641 3642 /* 3643 * innvl: { 3644 * "snaps" -> { snapshot1, snapshot2 } 3645 * (optional boolean) "defer" 3646 * } 3647 * 3648 * outnvl: snapshot -> error code (int32) 3649 * 3650 */ 3651 /* ARGSUSED */ 3652 static int 3653 zfs_ioc_destroy_snaps(const char *poolname, nvlist_t *innvl, nvlist_t *outnvl) 3654 { 3655 int error, poollen; 3656 nvlist_t *snaps; 3657 nvpair_t *pair; 3658 boolean_t defer; 3659 3660 if (nvlist_lookup_nvlist(innvl, "snaps", &snaps) != 0) 3661 return (SET_ERROR(EINVAL)); 3662 defer = nvlist_exists(innvl, "defer"); 3663 3664 poollen = strlen(poolname); 3665 for (pair = nvlist_next_nvpair(snaps, NULL); pair != NULL; 3666 pair = nvlist_next_nvpair(snaps, pair)) { 3667 const char *name = nvpair_name(pair); 3668 3669 /* 3670 * The snap must be in the specified pool to prevent the 3671 * invalid removal of zvol minors below. 3672 */ 3673 if (strncmp(name, poolname, poollen) != 0 || 3674 (name[poollen] != '/' && name[poollen] != '@')) 3675 return (SET_ERROR(EXDEV)); 3676 3677 error = zfs_unmount_snap(name); 3678 if (error != 0) 3679 return (error); 3680 zvol_remove_minors(name); 3681 } 3682 3683 return (dsl_destroy_snapshots_nvl(snaps, defer, outnvl)); 3684 } 3685 3686 /* 3687 * Create bookmarks. Bookmark names are of the form <fs>#<bmark>. 3688 * All bookmarks must be in the same pool. 3689 * 3690 * innvl: { 3691 * bookmark1 -> snapshot1, bookmark2 -> snapshot2 3692 * } 3693 * 3694 * outnvl: bookmark -> error code (int32) 3695 * 3696 */ 3697 /* ARGSUSED */ 3698 static int 3699 zfs_ioc_bookmark(const char *poolname, nvlist_t *innvl, nvlist_t *outnvl) 3700 { 3701 for (nvpair_t *pair = nvlist_next_nvpair(innvl, NULL); 3702 pair != NULL; pair = nvlist_next_nvpair(innvl, pair)) { 3703 char *snap_name; 3704 3705 /* 3706 * Verify the snapshot argument. 3707 */ 3708 if (nvpair_value_string(pair, &snap_name) != 0) 3709 return (SET_ERROR(EINVAL)); 3710 3711 3712 /* Verify that the keys (bookmarks) are unique */ 3713 for (nvpair_t *pair2 = nvlist_next_nvpair(innvl, pair); 3714 pair2 != NULL; pair2 = nvlist_next_nvpair(innvl, pair2)) { 3715 if (strcmp(nvpair_name(pair), nvpair_name(pair2)) == 0) 3716 return (SET_ERROR(EINVAL)); 3717 } 3718 } 3719 3720 return (dsl_bookmark_create(innvl, outnvl)); 3721 } 3722 3723 /* 3724 * innvl: { 3725 * property 1, property 2, ... 3726 * } 3727 * 3728 * outnvl: { 3729 * bookmark name 1 -> { property 1, property 2, ... }, 3730 * bookmark name 2 -> { property 1, property 2, ... } 3731 * } 3732 * 3733 */ 3734 static int 3735 zfs_ioc_get_bookmarks(const char *fsname, nvlist_t *innvl, nvlist_t *outnvl) 3736 { 3737 return (dsl_get_bookmarks(fsname, innvl, outnvl)); 3738 } 3739 3740 /* 3741 * innvl: { 3742 * bookmark name 1, bookmark name 2 3743 * } 3744 * 3745 * outnvl: bookmark -> error code (int32) 3746 * 3747 */ 3748 static int 3749 zfs_ioc_destroy_bookmarks(const char *poolname, nvlist_t *innvl, 3750 nvlist_t *outnvl) 3751 { 3752 int error, poollen; 3753 3754 poollen = strlen(poolname); 3755 for (nvpair_t *pair = nvlist_next_nvpair(innvl, NULL); 3756 pair != NULL; pair = nvlist_next_nvpair(innvl, pair)) { 3757 const char *name = nvpair_name(pair); 3758 const char *cp = strchr(name, '#'); 3759 3760 /* 3761 * The bookmark name must contain an #, and the part after it 3762 * must contain only valid characters. 3763 */ 3764 if (cp == NULL || 3765 zfs_component_namecheck(cp + 1, NULL, NULL) != 0) 3766 return (SET_ERROR(EINVAL)); 3767 3768 /* 3769 * The bookmark must be in the specified pool. 3770 */ 3771 if (strncmp(name, poolname, poollen) != 0 || 3772 (name[poollen] != '/' && name[poollen] != '#')) 3773 return (SET_ERROR(EXDEV)); 3774 } 3775 3776 error = dsl_bookmark_destroy(innvl, outnvl); 3777 return (error); 3778 } 3779 3780 /* 3781 * inputs: 3782 * zc_name name of dataset to destroy 3783 * zc_objset_type type of objset 3784 * zc_defer_destroy mark for deferred destroy 3785 * 3786 * outputs: none 3787 */ 3788 static int 3789 zfs_ioc_destroy(zfs_cmd_t *zc) 3790 { 3791 int err; 3792 3793 if (zc->zc_objset_type == DMU_OST_ZFS) { 3794 err = zfs_unmount_snap(zc->zc_name); 3795 if (err != 0) 3796 return (err); 3797 } 3798 3799 if (strchr(zc->zc_name, '@')) 3800 err = dsl_destroy_snapshot(zc->zc_name, zc->zc_defer_destroy); 3801 else 3802 err = dsl_destroy_head(zc->zc_name); 3803 if (zc->zc_objset_type == DMU_OST_ZVOL && err == 0) 3804 #if defined(__FreeBSD__) || defined(__NetBSD__) 3805 zvol_remove_minors(zc->zc_name); 3806 #else 3807 (void) zvol_remove_minor(zc->zc_name); 3808 #endif 3809 return (err); 3810 } 3811 3812 /* 3813 * fsname is name of dataset to rollback (to most recent snapshot) 3814 * 3815 * innvl is not used. 3816 * 3817 * outnvl: "target" -> name of most recent snapshot 3818 * } 3819 */ 3820 /* ARGSUSED */ 3821 static int 3822 zfs_ioc_rollback(const char *fsname, nvlist_t *args, nvlist_t *outnvl) 3823 { 3824 zfsvfs_t *zfsvfs; 3825 int error; 3826 3827 if (getzfsvfs(fsname, &zfsvfs) == 0) { 3828 dsl_dataset_t *ds; 3829 3830 ds = dmu_objset_ds(zfsvfs->z_os); 3831 error = zfs_suspend_fs(zfsvfs); 3832 if (error == 0) { 3833 int resume_err; 3834 3835 error = dsl_dataset_rollback(fsname, zfsvfs, outnvl); 3836 resume_err = zfs_resume_fs(zfsvfs, ds); 3837 error = error ? error : resume_err; 3838 } 3839 #ifdef illumos 3840 VFS_RELE(zfsvfs->z_vfs); 3841 #else 3842 vfs_unbusy(zfsvfs->z_vfs); 3843 #endif 3844 } else { 3845 error = dsl_dataset_rollback(fsname, NULL, outnvl); 3846 } 3847 return (error); 3848 } 3849 3850 static int 3851 recursive_unmount(const char *fsname, void *arg) 3852 { 3853 const char *snapname = arg; 3854 char fullname[ZFS_MAX_DATASET_NAME_LEN]; 3855 3856 (void) snprintf(fullname, sizeof (fullname), "%s@%s", fsname, snapname); 3857 return (zfs_unmount_snap(fullname)); 3858 } 3859 3860 /* 3861 * inputs: 3862 * zc_name old name of dataset 3863 * zc_value new name of dataset 3864 * zc_cookie recursive flag (only valid for snapshots) 3865 * 3866 * outputs: none 3867 */ 3868 static int 3869 zfs_ioc_rename(zfs_cmd_t *zc) 3870 { 3871 boolean_t recursive = zc->zc_cookie & 1; 3872 char *at; 3873 boolean_t allow_mounted = B_TRUE; 3874 3875 #if defined(__FreeBSD__) || defined(__NetBSD__) 3876 allow_mounted = (zc->zc_cookie & 2) != 0; 3877 #endif 3878 3879 zc->zc_value[sizeof (zc->zc_value) - 1] = '\0'; 3880 if (dataset_namecheck(zc->zc_value, NULL, NULL) != 0 || 3881 strchr(zc->zc_value, '%')) 3882 return (SET_ERROR(EINVAL)); 3883 3884 at = strchr(zc->zc_name, '@'); 3885 if (at != NULL) { 3886 /* snaps must be in same fs */ 3887 int error; 3888 3889 if (strncmp(zc->zc_name, zc->zc_value, at - zc->zc_name + 1)) 3890 return (SET_ERROR(EXDEV)); 3891 *at = '\0'; 3892 if (zc->zc_objset_type == DMU_OST_ZFS && !allow_mounted) { 3893 error = dmu_objset_find(zc->zc_name, 3894 recursive_unmount, at + 1, 3895 recursive ? DS_FIND_CHILDREN : 0); 3896 if (error != 0) { 3897 *at = '@'; 3898 return (error); 3899 } 3900 } 3901 error = dsl_dataset_rename_snapshot(zc->zc_name, 3902 at + 1, strchr(zc->zc_value, '@') + 1, recursive); 3903 *at = '@'; 3904 3905 return (error); 3906 } else { 3907 #ifdef illumos 3908 if (zc->zc_objset_type == DMU_OST_ZVOL) 3909 (void) zvol_remove_minor(zc->zc_name); 3910 #endif 3911 return (dsl_dir_rename(zc->zc_name, zc->zc_value)); 3912 } 3913 } 3914 3915 static int 3916 zfs_check_settable(const char *dsname, nvpair_t *pair, cred_t *cr) 3917 { 3918 const char *propname = nvpair_name(pair); 3919 boolean_t issnap = (strchr(dsname, '@') != NULL); 3920 zfs_prop_t prop = zfs_name_to_prop(propname); 3921 uint64_t intval; 3922 int err; 3923 3924 if (prop == ZPROP_INVAL) { 3925 if (zfs_prop_user(propname)) { 3926 if (err = zfs_secpolicy_write_perms(dsname, 3927 ZFS_DELEG_PERM_USERPROP, cr)) 3928 return (err); 3929 return (0); 3930 } 3931 3932 if (!issnap && zfs_prop_userquota(propname)) { 3933 const char *perm = NULL; 3934 const char *uq_prefix = 3935 zfs_userquota_prop_prefixes[ZFS_PROP_USERQUOTA]; 3936 const char *gq_prefix = 3937 zfs_userquota_prop_prefixes[ZFS_PROP_GROUPQUOTA]; 3938 3939 if (strncmp(propname, uq_prefix, 3940 strlen(uq_prefix)) == 0) { 3941 perm = ZFS_DELEG_PERM_USERQUOTA; 3942 } else if (strncmp(propname, gq_prefix, 3943 strlen(gq_prefix)) == 0) { 3944 perm = ZFS_DELEG_PERM_GROUPQUOTA; 3945 } else { 3946 /* USERUSED and GROUPUSED are read-only */ 3947 return (SET_ERROR(EINVAL)); 3948 } 3949 3950 if (err = zfs_secpolicy_write_perms(dsname, perm, cr)) 3951 return (err); 3952 return (0); 3953 } 3954 3955 return (SET_ERROR(EINVAL)); 3956 } 3957 3958 if (issnap) 3959 return (SET_ERROR(EINVAL)); 3960 3961 if (nvpair_type(pair) == DATA_TYPE_NVLIST) { 3962 /* 3963 * dsl_prop_get_all_impl() returns properties in this 3964 * format. 3965 */ 3966 nvlist_t *attrs; 3967 VERIFY(nvpair_value_nvlist(pair, &attrs) == 0); 3968 VERIFY(nvlist_lookup_nvpair(attrs, ZPROP_VALUE, 3969 &pair) == 0); 3970 } 3971 3972 /* 3973 * Check that this value is valid for this pool version 3974 */ 3975 switch (prop) { 3976 case ZFS_PROP_COMPRESSION: 3977 /* 3978 * If the user specified gzip compression, make sure 3979 * the SPA supports it. We ignore any errors here since 3980 * we'll catch them later. 3981 */ 3982 if (nvpair_value_uint64(pair, &intval) == 0) { 3983 if (intval >= ZIO_COMPRESS_GZIP_1 && 3984 intval <= ZIO_COMPRESS_GZIP_9 && 3985 zfs_earlier_version(dsname, 3986 SPA_VERSION_GZIP_COMPRESSION)) { 3987 return (SET_ERROR(ENOTSUP)); 3988 } 3989 3990 if (intval == ZIO_COMPRESS_ZLE && 3991 zfs_earlier_version(dsname, 3992 SPA_VERSION_ZLE_COMPRESSION)) 3993 return (SET_ERROR(ENOTSUP)); 3994 3995 if (intval == ZIO_COMPRESS_LZ4) { 3996 spa_t *spa; 3997 3998 if ((err = spa_open(dsname, &spa, FTAG)) != 0) 3999 return (err); 4000 4001 if (!spa_feature_is_enabled(spa, 4002 SPA_FEATURE_LZ4_COMPRESS)) { 4003 spa_close(spa, FTAG); 4004 return (SET_ERROR(ENOTSUP)); 4005 } 4006 spa_close(spa, FTAG); 4007 } 4008 4009 /* 4010 * If this is a bootable dataset then 4011 * verify that the compression algorithm 4012 * is supported for booting. We must return 4013 * something other than ENOTSUP since it 4014 * implies a downrev pool version. 4015 */ 4016 if (zfs_is_bootfs(dsname) && 4017 !BOOTFS_COMPRESS_VALID(intval)) { 4018 return (SET_ERROR(ERANGE)); 4019 } 4020 } 4021 break; 4022 4023 case ZFS_PROP_COPIES: 4024 if (zfs_earlier_version(dsname, SPA_VERSION_DITTO_BLOCKS)) 4025 return (SET_ERROR(ENOTSUP)); 4026 break; 4027 4028 case ZFS_PROP_RECORDSIZE: 4029 /* Record sizes above 128k need the feature to be enabled */ 4030 if (nvpair_value_uint64(pair, &intval) == 0 && 4031 intval > SPA_OLD_MAXBLOCKSIZE) { 4032 spa_t *spa; 4033 4034 /* 4035 * We don't allow setting the property above 1MB, 4036 * unless the tunable has been changed. 4037 */ 4038 if (intval > zfs_max_recordsize || 4039 intval > SPA_MAXBLOCKSIZE) 4040 return (SET_ERROR(ERANGE)); 4041 4042 if ((err = spa_open(dsname, &spa, FTAG)) != 0) 4043 return (err); 4044 4045 if (!spa_feature_is_enabled(spa, 4046 SPA_FEATURE_LARGE_BLOCKS)) { 4047 spa_close(spa, FTAG); 4048 return (SET_ERROR(ENOTSUP)); 4049 } 4050 spa_close(spa, FTAG); 4051 } 4052 break; 4053 4054 case ZFS_PROP_SHARESMB: 4055 if (zpl_earlier_version(dsname, ZPL_VERSION_FUID)) 4056 return (SET_ERROR(ENOTSUP)); 4057 break; 4058 4059 case ZFS_PROP_ACLINHERIT: 4060 if (nvpair_type(pair) == DATA_TYPE_UINT64 && 4061 nvpair_value_uint64(pair, &intval) == 0) { 4062 if (intval == ZFS_ACL_PASSTHROUGH_X && 4063 zfs_earlier_version(dsname, 4064 SPA_VERSION_PASSTHROUGH_X)) 4065 return (SET_ERROR(ENOTSUP)); 4066 } 4067 break; 4068 4069 case ZFS_PROP_CHECKSUM: 4070 case ZFS_PROP_DEDUP: 4071 { 4072 spa_feature_t feature; 4073 spa_t *spa; 4074 4075 /* dedup feature version checks */ 4076 if (prop == ZFS_PROP_DEDUP && 4077 zfs_earlier_version(dsname, SPA_VERSION_DEDUP)) 4078 return (SET_ERROR(ENOTSUP)); 4079 4080 if (nvpair_value_uint64(pair, &intval) != 0) 4081 return (SET_ERROR(EINVAL)); 4082 4083 /* check prop value is enabled in features */ 4084 feature = zio_checksum_to_feature(intval & ZIO_CHECKSUM_MASK); 4085 if (feature == SPA_FEATURE_NONE) 4086 break; 4087 4088 if ((err = spa_open(dsname, &spa, FTAG)) != 0) 4089 return (err); 4090 /* 4091 * Salted checksums are not supported on root pools. 4092 */ 4093 if (spa_bootfs(spa) != 0 && 4094 intval < ZIO_CHECKSUM_FUNCTIONS && 4095 (zio_checksum_table[intval].ci_flags & 4096 ZCHECKSUM_FLAG_SALTED)) { 4097 spa_close(spa, FTAG); 4098 return (SET_ERROR(ERANGE)); 4099 } 4100 if (!spa_feature_is_enabled(spa, feature)) { 4101 spa_close(spa, FTAG); 4102 return (SET_ERROR(ENOTSUP)); 4103 } 4104 spa_close(spa, FTAG); 4105 break; 4106 } 4107 } 4108 4109 return (zfs_secpolicy_setprop(dsname, prop, pair, CRED())); 4110 } 4111 4112 /* 4113 * Checks for a race condition to make sure we don't increment a feature flag 4114 * multiple times. 4115 */ 4116 static int 4117 zfs_prop_activate_feature_check(void *arg, dmu_tx_t *tx) 4118 { 4119 spa_t *spa = dmu_tx_pool(tx)->dp_spa; 4120 spa_feature_t *featurep = arg; 4121 4122 if (!spa_feature_is_active(spa, *featurep)) 4123 return (0); 4124 else 4125 return (SET_ERROR(EBUSY)); 4126 } 4127 4128 /* 4129 * The callback invoked on feature activation in the sync task caused by 4130 * zfs_prop_activate_feature. 4131 */ 4132 static void 4133 zfs_prop_activate_feature_sync(void *arg, dmu_tx_t *tx) 4134 { 4135 spa_t *spa = dmu_tx_pool(tx)->dp_spa; 4136 spa_feature_t *featurep = arg; 4137 4138 spa_feature_incr(spa, *featurep, tx); 4139 } 4140 4141 /* 4142 * Activates a feature on a pool in response to a property setting. This 4143 * creates a new sync task which modifies the pool to reflect the feature 4144 * as being active. 4145 */ 4146 static int 4147 zfs_prop_activate_feature(spa_t *spa, spa_feature_t feature) 4148 { 4149 int err; 4150 4151 /* EBUSY here indicates that the feature is already active */ 4152 err = dsl_sync_task(spa_name(spa), 4153 zfs_prop_activate_feature_check, zfs_prop_activate_feature_sync, 4154 &feature, 2, ZFS_SPACE_CHECK_RESERVED); 4155 4156 if (err != 0 && err != EBUSY) 4157 return (err); 4158 else 4159 return (0); 4160 } 4161 4162 /* 4163 * Removes properties from the given props list that fail permission checks 4164 * needed to clear them and to restore them in case of a receive error. For each 4165 * property, make sure we have both set and inherit permissions. 4166 * 4167 * Returns the first error encountered if any permission checks fail. If the 4168 * caller provides a non-NULL errlist, it also gives the complete list of names 4169 * of all the properties that failed a permission check along with the 4170 * corresponding error numbers. The caller is responsible for freeing the 4171 * returned errlist. 4172 * 4173 * If every property checks out successfully, zero is returned and the list 4174 * pointed at by errlist is NULL. 4175 */ 4176 static int 4177 zfs_check_clearable(char *dataset, nvlist_t *props, nvlist_t **errlist) 4178 { 4179 zfs_cmd_t *zc; 4180 nvpair_t *pair, *next_pair; 4181 nvlist_t *errors; 4182 int err, rv = 0; 4183 4184 if (props == NULL) 4185 return (0); 4186 4187 VERIFY(nvlist_alloc(&errors, NV_UNIQUE_NAME, KM_SLEEP) == 0); 4188 4189 zc = kmem_alloc(sizeof (zfs_cmd_t), KM_SLEEP); 4190 (void) strcpy(zc->zc_name, dataset); 4191 pair = nvlist_next_nvpair(props, NULL); 4192 while (pair != NULL) { 4193 next_pair = nvlist_next_nvpair(props, pair); 4194 4195 (void) strcpy(zc->zc_value, nvpair_name(pair)); 4196 if ((err = zfs_check_settable(dataset, pair, CRED())) != 0 || 4197 (err = zfs_secpolicy_inherit_prop(zc, NULL, CRED())) != 0) { 4198 VERIFY(nvlist_remove_nvpair(props, pair) == 0); 4199 VERIFY(nvlist_add_int32(errors, 4200 zc->zc_value, err) == 0); 4201 } 4202 pair = next_pair; 4203 } 4204 kmem_free(zc, sizeof (zfs_cmd_t)); 4205 4206 if ((pair = nvlist_next_nvpair(errors, NULL)) == NULL) { 4207 nvlist_free(errors); 4208 errors = NULL; 4209 } else { 4210 VERIFY(nvpair_value_int32(pair, &rv) == 0); 4211 } 4212 4213 if (errlist == NULL) 4214 nvlist_free(errors); 4215 else 4216 *errlist = errors; 4217 4218 return (rv); 4219 } 4220 4221 static boolean_t 4222 propval_equals(nvpair_t *p1, nvpair_t *p2) 4223 { 4224 if (nvpair_type(p1) == DATA_TYPE_NVLIST) { 4225 /* dsl_prop_get_all_impl() format */ 4226 nvlist_t *attrs; 4227 VERIFY(nvpair_value_nvlist(p1, &attrs) == 0); 4228 VERIFY(nvlist_lookup_nvpair(attrs, ZPROP_VALUE, 4229 &p1) == 0); 4230 } 4231 4232 if (nvpair_type(p2) == DATA_TYPE_NVLIST) { 4233 nvlist_t *attrs; 4234 VERIFY(nvpair_value_nvlist(p2, &attrs) == 0); 4235 VERIFY(nvlist_lookup_nvpair(attrs, ZPROP_VALUE, 4236 &p2) == 0); 4237 } 4238 4239 if (nvpair_type(p1) != nvpair_type(p2)) 4240 return (B_FALSE); 4241 4242 if (nvpair_type(p1) == DATA_TYPE_STRING) { 4243 char *valstr1, *valstr2; 4244 4245 VERIFY(nvpair_value_string(p1, (char **)&valstr1) == 0); 4246 VERIFY(nvpair_value_string(p2, (char **)&valstr2) == 0); 4247 return (strcmp(valstr1, valstr2) == 0); 4248 } else { 4249 uint64_t intval1, intval2; 4250 4251 VERIFY(nvpair_value_uint64(p1, &intval1) == 0); 4252 VERIFY(nvpair_value_uint64(p2, &intval2) == 0); 4253 return (intval1 == intval2); 4254 } 4255 } 4256 4257 /* 4258 * Remove properties from props if they are not going to change (as determined 4259 * by comparison with origprops). Remove them from origprops as well, since we 4260 * do not need to clear or restore properties that won't change. 4261 */ 4262 static void 4263 props_reduce(nvlist_t *props, nvlist_t *origprops) 4264 { 4265 nvpair_t *pair, *next_pair; 4266 4267 if (origprops == NULL) 4268 return; /* all props need to be received */ 4269 4270 pair = nvlist_next_nvpair(props, NULL); 4271 while (pair != NULL) { 4272 const char *propname = nvpair_name(pair); 4273 nvpair_t *match; 4274 4275 next_pair = nvlist_next_nvpair(props, pair); 4276 4277 if ((nvlist_lookup_nvpair(origprops, propname, 4278 &match) != 0) || !propval_equals(pair, match)) 4279 goto next; /* need to set received value */ 4280 4281 /* don't clear the existing received value */ 4282 (void) nvlist_remove_nvpair(origprops, match); 4283 /* don't bother receiving the property */ 4284 (void) nvlist_remove_nvpair(props, pair); 4285 next: 4286 pair = next_pair; 4287 } 4288 } 4289 4290 /* 4291 * Extract properties that cannot be set PRIOR to the receipt of a dataset. 4292 * For example, refquota cannot be set until after the receipt of a dataset, 4293 * because in replication streams, an older/earlier snapshot may exceed the 4294 * refquota. We want to receive the older/earlier snapshot, but setting 4295 * refquota pre-receipt will set the dsl's ACTUAL quota, which will prevent 4296 * the older/earlier snapshot from being received (with EDQUOT). 4297 * 4298 * The ZFS test "zfs_receive_011_pos" demonstrates such a scenario. 4299 * 4300 * libzfs will need to be judicious handling errors encountered by props 4301 * extracted by this function. 4302 */ 4303 static nvlist_t * 4304 extract_delay_props(nvlist_t *props) 4305 { 4306 nvlist_t *delayprops; 4307 nvpair_t *nvp, *tmp; 4308 static const zfs_prop_t delayable[] = { ZFS_PROP_REFQUOTA, 0 }; 4309 int i; 4310 4311 VERIFY(nvlist_alloc(&delayprops, NV_UNIQUE_NAME, KM_SLEEP) == 0); 4312 4313 for (nvp = nvlist_next_nvpair(props, NULL); nvp != NULL; 4314 nvp = nvlist_next_nvpair(props, nvp)) { 4315 /* 4316 * strcmp() is safe because zfs_prop_to_name() always returns 4317 * a bounded string. 4318 */ 4319 for (i = 0; delayable[i] != 0; i++) { 4320 if (strcmp(zfs_prop_to_name(delayable[i]), 4321 nvpair_name(nvp)) == 0) { 4322 break; 4323 } 4324 } 4325 if (delayable[i] != 0) { 4326 tmp = nvlist_prev_nvpair(props, nvp); 4327 VERIFY(nvlist_add_nvpair(delayprops, nvp) == 0); 4328 VERIFY(nvlist_remove_nvpair(props, nvp) == 0); 4329 nvp = tmp; 4330 } 4331 } 4332 4333 if (nvlist_empty(delayprops)) { 4334 nvlist_free(delayprops); 4335 delayprops = NULL; 4336 } 4337 return (delayprops); 4338 } 4339 4340 #ifdef DEBUG 4341 static boolean_t zfs_ioc_recv_inject_err; 4342 #endif 4343 4344 /* 4345 * inputs: 4346 * zc_name name of containing filesystem 4347 * zc_nvlist_src{_size} nvlist of properties to apply 4348 * zc_value name of snapshot to create 4349 * zc_string name of clone origin (if DRR_FLAG_CLONE) 4350 * zc_cookie file descriptor to recv from 4351 * zc_begin_record the BEGIN record of the stream (not byteswapped) 4352 * zc_guid force flag 4353 * zc_cleanup_fd cleanup-on-exit file descriptor 4354 * zc_action_handle handle for this guid/ds mapping (or zero on first call) 4355 * zc_resumable if data is incomplete assume sender will resume 4356 * 4357 * outputs: 4358 * zc_cookie number of bytes read 4359 * zc_nvlist_dst{_size} error for each unapplied received property 4360 * zc_obj zprop_errflags_t 4361 * zc_action_handle handle for this guid/ds mapping 4362 */ 4363 static int 4364 zfs_ioc_recv(zfs_cmd_t *zc) 4365 { 4366 file_t *fp; 4367 dmu_recv_cookie_t drc; 4368 boolean_t force = (boolean_t)zc->zc_guid; 4369 int fd; 4370 int error = 0; 4371 int props_error = 0; 4372 nvlist_t *errors; 4373 offset_t off; 4374 nvlist_t *props = NULL; /* sent properties */ 4375 nvlist_t *origprops = NULL; /* existing properties */ 4376 nvlist_t *delayprops = NULL; /* sent properties applied post-receive */ 4377 char *origin = NULL; 4378 char *tosnap; 4379 char tofs[ZFS_MAX_DATASET_NAME_LEN]; 4380 #ifdef __FreeBSD__ 4381 cap_rights_t rights; 4382 #endif 4383 boolean_t first_recvd_props = B_FALSE; 4384 4385 if (dataset_namecheck(zc->zc_value, NULL, NULL) != 0 || 4386 strchr(zc->zc_value, '@') == NULL || 4387 strchr(zc->zc_value, '%')) 4388 return (SET_ERROR(EINVAL)); 4389 4390 (void) strcpy(tofs, zc->zc_value); 4391 tosnap = strchr(tofs, '@'); 4392 *tosnap++ = '\0'; 4393 4394 if (zc->zc_nvlist_src != 0 && 4395 (error = get_nvlist(zc->zc_nvlist_src, zc->zc_nvlist_src_size, 4396 zc->zc_iflags, &props)) != 0) 4397 return (error); 4398 4399 fd = zc->zc_cookie; 4400 #ifdef __FreeBSD__ 4401 fget_read(curthread, fd, cap_rights_init(&rights, CAP_PREAD), &fp); 4402 #else 4403 fp = getf(fd); 4404 #endif 4405 if (fp == NULL) { 4406 nvlist_free(props); 4407 return (SET_ERROR(EBADF)); 4408 } 4409 4410 errors = fnvlist_alloc(); 4411 4412 if (zc->zc_string[0]) 4413 origin = zc->zc_string; 4414 4415 error = dmu_recv_begin(tofs, tosnap, 4416 &zc->zc_begin_record, force, zc->zc_resumable, origin, &drc); 4417 if (error != 0) 4418 goto out; 4419 4420 /* 4421 * Set properties before we receive the stream so that they are applied 4422 * to the new data. Note that we must call dmu_recv_stream() if 4423 * dmu_recv_begin() succeeds. 4424 */ 4425 if (props != NULL && !drc.drc_newfs) { 4426 if (spa_version(dsl_dataset_get_spa(drc.drc_ds)) >= 4427 SPA_VERSION_RECVD_PROPS && 4428 !dsl_prop_get_hasrecvd(tofs)) 4429 first_recvd_props = B_TRUE; 4430 4431 /* 4432 * If new received properties are supplied, they are to 4433 * completely replace the existing received properties, so stash 4434 * away the existing ones. 4435 */ 4436 if (dsl_prop_get_received(tofs, &origprops) == 0) { 4437 nvlist_t *errlist = NULL; 4438 /* 4439 * Don't bother writing a property if its value won't 4440 * change (and avoid the unnecessary security checks). 4441 * 4442 * The first receive after SPA_VERSION_RECVD_PROPS is a 4443 * special case where we blow away all local properties 4444 * regardless. 4445 */ 4446 if (!first_recvd_props) 4447 props_reduce(props, origprops); 4448 if (zfs_check_clearable(tofs, origprops, &errlist) != 0) 4449 (void) nvlist_merge(errors, errlist, 0); 4450 nvlist_free(errlist); 4451 4452 if (clear_received_props(tofs, origprops, 4453 first_recvd_props ? NULL : props) != 0) 4454 zc->zc_obj |= ZPROP_ERR_NOCLEAR; 4455 } else { 4456 zc->zc_obj |= ZPROP_ERR_NOCLEAR; 4457 } 4458 } 4459 4460 if (props != NULL) { 4461 props_error = dsl_prop_set_hasrecvd(tofs); 4462 4463 if (props_error == 0) { 4464 delayprops = extract_delay_props(props); 4465 (void) zfs_set_prop_nvlist(tofs, ZPROP_SRC_RECEIVED, 4466 props, errors); 4467 } 4468 } 4469 4470 off = fp->f_offset; 4471 error = dmu_recv_stream(&drc, fp, &off, zc->zc_cleanup_fd, 4472 &zc->zc_action_handle); 4473 4474 if (error == 0) { 4475 zfsvfs_t *zfsvfs = NULL; 4476 4477 if (getzfsvfs(tofs, &zfsvfs) == 0) { 4478 /* online recv */ 4479 dsl_dataset_t *ds; 4480 int end_err; 4481 4482 ds = dmu_objset_ds(zfsvfs->z_os); 4483 error = zfs_suspend_fs(zfsvfs); 4484 /* 4485 * If the suspend fails, then the recv_end will 4486 * likely also fail, and clean up after itself. 4487 */ 4488 end_err = dmu_recv_end(&drc, zfsvfs); 4489 if (error == 0) 4490 error = zfs_resume_fs(zfsvfs, ds); 4491 error = error ? error : end_err; 4492 #ifdef illumos 4493 VFS_RELE(zfsvfs->z_vfs); 4494 #else 4495 vfs_unbusy(zfsvfs->z_vfs); 4496 #endif 4497 } else { 4498 error = dmu_recv_end(&drc, NULL); 4499 } 4500 4501 /* Set delayed properties now, after we're done receiving. */ 4502 if (delayprops != NULL && error == 0) { 4503 (void) zfs_set_prop_nvlist(tofs, ZPROP_SRC_RECEIVED, 4504 delayprops, errors); 4505 } 4506 } 4507 4508 if (delayprops != NULL) { 4509 /* 4510 * Merge delayed props back in with initial props, in case 4511 * we're DEBUG and zfs_ioc_recv_inject_err is set (which means 4512 * we have to make sure clear_received_props() includes 4513 * the delayed properties). 4514 * 4515 * Since zfs_ioc_recv_inject_err is only in DEBUG kernels, 4516 * using ASSERT() will be just like a VERIFY. 4517 */ 4518 ASSERT(nvlist_merge(props, delayprops, 0) == 0); 4519 nvlist_free(delayprops); 4520 } 4521 4522 /* 4523 * Now that all props, initial and delayed, are set, report the prop 4524 * errors to the caller. 4525 */ 4526 if (zc->zc_nvlist_dst_size != 0 && 4527 (nvlist_smush(errors, zc->zc_nvlist_dst_size) != 0 || 4528 put_nvlist(zc, errors) != 0)) { 4529 /* 4530 * Caller made zc->zc_nvlist_dst less than the minimum expected 4531 * size or supplied an invalid address. 4532 */ 4533 props_error = SET_ERROR(EINVAL); 4534 } 4535 4536 zc->zc_cookie = off - fp->f_offset; 4537 if (off >= 0 && off <= MAXOFFSET_T) 4538 fp->f_offset = off; 4539 4540 #ifdef DEBUG 4541 if (zfs_ioc_recv_inject_err) { 4542 zfs_ioc_recv_inject_err = B_FALSE; 4543 error = 1; 4544 } 4545 #endif 4546 4547 if (error == 0) 4548 zvol_create_minors(tofs); 4549 4550 /* 4551 * On error, restore the original props. 4552 */ 4553 if (error != 0 && props != NULL && !drc.drc_newfs) { 4554 if (clear_received_props(tofs, props, NULL) != 0) { 4555 /* 4556 * We failed to clear the received properties. 4557 * Since we may have left a $recvd value on the 4558 * system, we can't clear the $hasrecvd flag. 4559 */ 4560 zc->zc_obj |= ZPROP_ERR_NORESTORE; 4561 } else if (first_recvd_props) { 4562 dsl_prop_unset_hasrecvd(tofs); 4563 } 4564 4565 if (origprops == NULL && !drc.drc_newfs) { 4566 /* We failed to stash the original properties. */ 4567 zc->zc_obj |= ZPROP_ERR_NORESTORE; 4568 } 4569 4570 /* 4571 * dsl_props_set() will not convert RECEIVED to LOCAL on or 4572 * after SPA_VERSION_RECVD_PROPS, so we need to specify LOCAL 4573 * explictly if we're restoring local properties cleared in the 4574 * first new-style receive. 4575 */ 4576 if (origprops != NULL && 4577 zfs_set_prop_nvlist(tofs, (first_recvd_props ? 4578 ZPROP_SRC_LOCAL : ZPROP_SRC_RECEIVED), 4579 origprops, NULL) != 0) { 4580 /* 4581 * We stashed the original properties but failed to 4582 * restore them. 4583 */ 4584 zc->zc_obj |= ZPROP_ERR_NORESTORE; 4585 } 4586 } 4587 out: 4588 nvlist_free(props); 4589 nvlist_free(origprops); 4590 nvlist_free(errors); 4591 releasef(fd); 4592 4593 if (error == 0) 4594 error = props_error; 4595 4596 return (error); 4597 } 4598 4599 /* 4600 * inputs: 4601 * zc_name name of snapshot to send 4602 * zc_cookie file descriptor to send stream to 4603 * zc_obj fromorigin flag (mutually exclusive with zc_fromobj) 4604 * zc_sendobj objsetid of snapshot to send 4605 * zc_fromobj objsetid of incremental fromsnap (may be zero) 4606 * zc_guid if set, estimate size of stream only. zc_cookie is ignored. 4607 * output size in zc_objset_type. 4608 * zc_flags lzc_send_flags 4609 * 4610 * outputs: 4611 * zc_objset_type estimated size, if zc_guid is set 4612 */ 4613 static int 4614 zfs_ioc_send(zfs_cmd_t *zc) 4615 { 4616 int error; 4617 offset_t off; 4618 boolean_t estimate = (zc->zc_guid != 0); 4619 boolean_t embedok = (zc->zc_flags & 0x1); 4620 boolean_t large_block_ok = (zc->zc_flags & 0x2); 4621 4622 if (zc->zc_obj != 0) { 4623 dsl_pool_t *dp; 4624 dsl_dataset_t *tosnap; 4625 4626 error = dsl_pool_hold(zc->zc_name, FTAG, &dp); 4627 if (error != 0) 4628 return (error); 4629 4630 error = dsl_dataset_hold_obj(dp, zc->zc_sendobj, FTAG, &tosnap); 4631 if (error != 0) { 4632 dsl_pool_rele(dp, FTAG); 4633 return (error); 4634 } 4635 4636 if (dsl_dir_is_clone(tosnap->ds_dir)) 4637 zc->zc_fromobj = 4638 dsl_dir_phys(tosnap->ds_dir)->dd_origin_obj; 4639 dsl_dataset_rele(tosnap, FTAG); 4640 dsl_pool_rele(dp, FTAG); 4641 } 4642 4643 if (estimate) { 4644 dsl_pool_t *dp; 4645 dsl_dataset_t *tosnap; 4646 dsl_dataset_t *fromsnap = NULL; 4647 4648 error = dsl_pool_hold(zc->zc_name, FTAG, &dp); 4649 if (error != 0) 4650 return (error); 4651 4652 error = dsl_dataset_hold_obj(dp, zc->zc_sendobj, FTAG, &tosnap); 4653 if (error != 0) { 4654 dsl_pool_rele(dp, FTAG); 4655 return (error); 4656 } 4657 4658 if (zc->zc_fromobj != 0) { 4659 error = dsl_dataset_hold_obj(dp, zc->zc_fromobj, 4660 FTAG, &fromsnap); 4661 if (error != 0) { 4662 dsl_dataset_rele(tosnap, FTAG); 4663 dsl_pool_rele(dp, FTAG); 4664 return (error); 4665 } 4666 } 4667 4668 error = dmu_send_estimate(tosnap, fromsnap, 4669 &zc->zc_objset_type); 4670 4671 if (fromsnap != NULL) 4672 dsl_dataset_rele(fromsnap, FTAG); 4673 dsl_dataset_rele(tosnap, FTAG); 4674 dsl_pool_rele(dp, FTAG); 4675 } else { 4676 file_t *fp; 4677 #ifdef __FreeBSD__ 4678 cap_rights_t rights; 4679 4680 fget_write(curthread, zc->zc_cookie, 4681 cap_rights_init(&rights, CAP_WRITE), &fp); 4682 #else 4683 fp = getf(zc->zc_cookie); 4684 #endif 4685 if (fp == NULL) 4686 return (SET_ERROR(EBADF)); 4687 4688 off = fp->f_offset; 4689 error = dmu_send_obj(zc->zc_name, zc->zc_sendobj, 4690 zc->zc_fromobj, embedok, large_block_ok, 4691 #ifdef illumos 4692 zc->zc_cookie, fp->f_vnode, &off); 4693 #else 4694 zc->zc_cookie, fp, &off); 4695 #endif 4696 4697 if (off >= 0 && off <= MAXOFFSET_T) 4698 fp->f_offset = off; 4699 releasef(zc->zc_cookie); 4700 } 4701 return (error); 4702 } 4703 4704 /* 4705 * inputs: 4706 * zc_name name of snapshot on which to report progress 4707 * zc_cookie file descriptor of send stream 4708 * 4709 * outputs: 4710 * zc_cookie number of bytes written in send stream thus far 4711 */ 4712 static int 4713 zfs_ioc_send_progress(zfs_cmd_t *zc) 4714 { 4715 dsl_pool_t *dp; 4716 dsl_dataset_t *ds; 4717 dmu_sendarg_t *dsp = NULL; 4718 int error; 4719 4720 error = dsl_pool_hold(zc->zc_name, FTAG, &dp); 4721 if (error != 0) 4722 return (error); 4723 4724 error = dsl_dataset_hold(dp, zc->zc_name, FTAG, &ds); 4725 if (error != 0) { 4726 dsl_pool_rele(dp, FTAG); 4727 return (error); 4728 } 4729 4730 mutex_enter(&ds->ds_sendstream_lock); 4731 4732 /* 4733 * Iterate over all the send streams currently active on this dataset. 4734 * If there's one which matches the specified file descriptor _and_ the 4735 * stream was started by the current process, return the progress of 4736 * that stream. 4737 */ 4738 for (dsp = list_head(&ds->ds_sendstreams); dsp != NULL; 4739 dsp = list_next(&ds->ds_sendstreams, dsp)) { 4740 if (dsp->dsa_outfd == zc->zc_cookie && 4741 dsp->dsa_proc == curproc) 4742 break; 4743 } 4744 4745 if (dsp != NULL) 4746 zc->zc_cookie = *(dsp->dsa_off); 4747 else 4748 error = SET_ERROR(ENOENT); 4749 4750 mutex_exit(&ds->ds_sendstream_lock); 4751 dsl_dataset_rele(ds, FTAG); 4752 dsl_pool_rele(dp, FTAG); 4753 return (error); 4754 } 4755 4756 static int 4757 zfs_ioc_inject_fault(zfs_cmd_t *zc) 4758 { 4759 int id, error; 4760 4761 error = zio_inject_fault(zc->zc_name, (int)zc->zc_guid, &id, 4762 &zc->zc_inject_record); 4763 4764 if (error == 0) 4765 zc->zc_guid = (uint64_t)id; 4766 4767 return (error); 4768 } 4769 4770 static int 4771 zfs_ioc_clear_fault(zfs_cmd_t *zc) 4772 { 4773 return (zio_clear_fault((int)zc->zc_guid)); 4774 } 4775 4776 static int 4777 zfs_ioc_inject_list_next(zfs_cmd_t *zc) 4778 { 4779 int id = (int)zc->zc_guid; 4780 int error; 4781 4782 error = zio_inject_list_next(&id, zc->zc_name, sizeof (zc->zc_name), 4783 &zc->zc_inject_record); 4784 4785 zc->zc_guid = id; 4786 4787 return (error); 4788 } 4789 4790 static int 4791 zfs_ioc_error_log(zfs_cmd_t *zc) 4792 { 4793 spa_t *spa; 4794 int error; 4795 size_t count = (size_t)zc->zc_nvlist_dst_size; 4796 4797 if ((error = spa_open(zc->zc_name, &spa, FTAG)) != 0) 4798 return (error); 4799 4800 error = spa_get_errlog(spa, (void *)(uintptr_t)zc->zc_nvlist_dst, 4801 &count); 4802 if (error == 0) 4803 zc->zc_nvlist_dst_size = count; 4804 else 4805 zc->zc_nvlist_dst_size = spa_get_errlog_size(spa); 4806 4807 spa_close(spa, FTAG); 4808 4809 return (error); 4810 } 4811 4812 static int 4813 zfs_ioc_clear(zfs_cmd_t *zc) 4814 { 4815 spa_t *spa; 4816 vdev_t *vd; 4817 int error; 4818 4819 /* 4820 * On zpool clear we also fix up missing slogs 4821 */ 4822 mutex_enter(&spa_namespace_lock); 4823 spa = spa_lookup(zc->zc_name); 4824 if (spa == NULL) { 4825 mutex_exit(&spa_namespace_lock); 4826 return (SET_ERROR(EIO)); 4827 } 4828 if (spa_get_log_state(spa) == SPA_LOG_MISSING) { 4829 /* we need to let spa_open/spa_load clear the chains */ 4830 spa_set_log_state(spa, SPA_LOG_CLEAR); 4831 } 4832 spa->spa_last_open_failed = 0; 4833 mutex_exit(&spa_namespace_lock); 4834 4835 if (zc->zc_cookie & ZPOOL_NO_REWIND) { 4836 error = spa_open(zc->zc_name, &spa, FTAG); 4837 } else { 4838 nvlist_t *policy; 4839 nvlist_t *config = NULL; 4840 4841 if (zc->zc_nvlist_src == 0) 4842 return (SET_ERROR(EINVAL)); 4843 4844 if ((error = get_nvlist(zc->zc_nvlist_src, 4845 zc->zc_nvlist_src_size, zc->zc_iflags, &policy)) == 0) { 4846 error = spa_open_rewind(zc->zc_name, &spa, FTAG, 4847 policy, &config); 4848 if (config != NULL) { 4849 int err; 4850 4851 if ((err = put_nvlist(zc, config)) != 0) 4852 error = err; 4853 nvlist_free(config); 4854 } 4855 nvlist_free(policy); 4856 } 4857 } 4858 4859 if (error != 0) 4860 return (error); 4861 4862 spa_vdev_state_enter(spa, SCL_NONE); 4863 4864 if (zc->zc_guid == 0) { 4865 vd = NULL; 4866 } else { 4867 vd = spa_lookup_by_guid(spa, zc->zc_guid, B_TRUE); 4868 if (vd == NULL) { 4869 (void) spa_vdev_state_exit(spa, NULL, ENODEV); 4870 spa_close(spa, FTAG); 4871 return (SET_ERROR(ENODEV)); 4872 } 4873 } 4874 4875 vdev_clear(spa, vd); 4876 4877 (void) spa_vdev_state_exit(spa, NULL, 0); 4878 4879 /* 4880 * Resume any suspended I/Os. 4881 */ 4882 if (zio_resume(spa) != 0) 4883 error = SET_ERROR(EIO); 4884 4885 spa_close(spa, FTAG); 4886 4887 return (error); 4888 } 4889 4890 static int 4891 zfs_ioc_pool_reopen(zfs_cmd_t *zc) 4892 { 4893 spa_t *spa; 4894 int error; 4895 4896 error = spa_open(zc->zc_name, &spa, FTAG); 4897 if (error != 0) 4898 return (error); 4899 4900 spa_vdev_state_enter(spa, SCL_NONE); 4901 4902 /* 4903 * If a resilver is already in progress then set the 4904 * spa_scrub_reopen flag to B_TRUE so that we don't restart 4905 * the scan as a side effect of the reopen. Otherwise, let 4906 * vdev_open() decided if a resilver is required. 4907 */ 4908 spa->spa_scrub_reopen = dsl_scan_resilvering(spa->spa_dsl_pool); 4909 vdev_reopen(spa->spa_root_vdev); 4910 spa->spa_scrub_reopen = B_FALSE; 4911 4912 (void) spa_vdev_state_exit(spa, NULL, 0); 4913 spa_close(spa, FTAG); 4914 return (0); 4915 } 4916 /* 4917 * inputs: 4918 * zc_name name of filesystem 4919 * zc_value name of origin snapshot 4920 * 4921 * outputs: 4922 * zc_string name of conflicting snapshot, if there is one 4923 */ 4924 static int 4925 zfs_ioc_promote(zfs_cmd_t *zc) 4926 { 4927 char *cp; 4928 4929 /* 4930 * We don't need to unmount *all* the origin fs's snapshots, but 4931 * it's easier. 4932 */ 4933 cp = strchr(zc->zc_value, '@'); 4934 if (cp) 4935 *cp = '\0'; 4936 (void) dmu_objset_find(zc->zc_value, 4937 zfs_unmount_snap_cb, NULL, DS_FIND_SNAPSHOTS); 4938 return (dsl_dataset_promote(zc->zc_name, zc->zc_string)); 4939 } 4940 4941 /* 4942 * Retrieve a single {user|group}{used|quota}@... property. 4943 * 4944 * inputs: 4945 * zc_name name of filesystem 4946 * zc_objset_type zfs_userquota_prop_t 4947 * zc_value domain name (eg. "S-1-234-567-89") 4948 * zc_guid RID/UID/GID 4949 * 4950 * outputs: 4951 * zc_cookie property value 4952 */ 4953 static int 4954 zfs_ioc_userspace_one(zfs_cmd_t *zc) 4955 { 4956 zfsvfs_t *zfsvfs; 4957 int error; 4958 4959 if (zc->zc_objset_type >= ZFS_NUM_USERQUOTA_PROPS) 4960 return (SET_ERROR(EINVAL)); 4961 4962 error = zfsvfs_hold(zc->zc_name, FTAG, &zfsvfs, B_FALSE); 4963 if (error != 0) 4964 return (error); 4965 4966 error = zfs_userspace_one(zfsvfs, 4967 zc->zc_objset_type, zc->zc_value, zc->zc_guid, &zc->zc_cookie); 4968 zfsvfs_rele(zfsvfs, FTAG); 4969 4970 return (error); 4971 } 4972 4973 /* 4974 * inputs: 4975 * zc_name name of filesystem 4976 * zc_cookie zap cursor 4977 * zc_objset_type zfs_userquota_prop_t 4978 * zc_nvlist_dst[_size] buffer to fill (not really an nvlist) 4979 * 4980 * outputs: 4981 * zc_nvlist_dst[_size] data buffer (array of zfs_useracct_t) 4982 * zc_cookie zap cursor 4983 */ 4984 static int 4985 zfs_ioc_userspace_many(zfs_cmd_t *zc) 4986 { 4987 zfsvfs_t *zfsvfs; 4988 int bufsize = zc->zc_nvlist_dst_size; 4989 4990 if (bufsize <= 0) 4991 return (SET_ERROR(ENOMEM)); 4992 4993 int error = zfsvfs_hold(zc->zc_name, FTAG, &zfsvfs, B_FALSE); 4994 if (error != 0) 4995 return (error); 4996 4997 void *buf = kmem_alloc(bufsize, KM_SLEEP); 4998 4999 error = zfs_userspace_many(zfsvfs, zc->zc_objset_type, &zc->zc_cookie, 5000 buf, &zc->zc_nvlist_dst_size); 5001 5002 if (error == 0) { 5003 error = ddi_copyout(buf, 5004 (void *)(uintptr_t)zc->zc_nvlist_dst, 5005 zc->zc_nvlist_dst_size, zc->zc_iflags); 5006 } 5007 kmem_free(buf, bufsize); 5008 zfsvfs_rele(zfsvfs, FTAG); 5009 5010 return (error); 5011 } 5012 5013 /* 5014 * inputs: 5015 * zc_name name of filesystem 5016 * 5017 * outputs: 5018 * none 5019 */ 5020 static int 5021 zfs_ioc_userspace_upgrade(zfs_cmd_t *zc) 5022 { 5023 objset_t *os; 5024 int error = 0; 5025 zfsvfs_t *zfsvfs; 5026 5027 if (getzfsvfs(zc->zc_name, &zfsvfs) == 0) { 5028 if (!dmu_objset_userused_enabled(zfsvfs->z_os)) { 5029 /* 5030 * If userused is not enabled, it may be because the 5031 * objset needs to be closed & reopened (to grow the 5032 * objset_phys_t). Suspend/resume the fs will do that. 5033 */ 5034 dsl_dataset_t *ds; 5035 5036 ds = dmu_objset_ds(zfsvfs->z_os); 5037 error = zfs_suspend_fs(zfsvfs); 5038 if (error == 0) { 5039 dmu_objset_refresh_ownership(zfsvfs->z_os, 5040 zfsvfs); 5041 error = zfs_resume_fs(zfsvfs, ds); 5042 } 5043 } 5044 if (error == 0) 5045 error = dmu_objset_userspace_upgrade(zfsvfs->z_os); 5046 #ifdef illumos 5047 VFS_RELE(zfsvfs->z_vfs); 5048 #else 5049 vfs_unbusy(zfsvfs->z_vfs); 5050 #endif 5051 } else { 5052 /* XXX kind of reading contents without owning */ 5053 error = dmu_objset_hold(zc->zc_name, FTAG, &os); 5054 if (error != 0) 5055 return (error); 5056 5057 error = dmu_objset_userspace_upgrade(os); 5058 dmu_objset_rele(os, FTAG); 5059 } 5060 5061 return (error); 5062 } 5063 5064 #ifdef illumos 5065 /* 5066 * We don't want to have a hard dependency 5067 * against some special symbols in sharefs 5068 * nfs, and smbsrv. Determine them if needed when 5069 * the first file system is shared. 5070 * Neither sharefs, nfs or smbsrv are unloadable modules. 5071 */ 5072 int (*znfsexport_fs)(void *arg); 5073 int (*zshare_fs)(enum sharefs_sys_op, share_t *, uint32_t); 5074 int (*zsmbexport_fs)(void *arg, boolean_t add_share); 5075 5076 int zfs_nfsshare_inited; 5077 int zfs_smbshare_inited; 5078 5079 ddi_modhandle_t nfs_mod; 5080 ddi_modhandle_t sharefs_mod; 5081 ddi_modhandle_t smbsrv_mod; 5082 #endif /* illumos */ 5083 kmutex_t zfs_share_lock; 5084 5085 #ifdef illumos 5086 static int 5087 zfs_init_sharefs() 5088 { 5089 int error; 5090 5091 ASSERT(MUTEX_HELD(&zfs_share_lock)); 5092 /* Both NFS and SMB shares also require sharetab support. */ 5093 if (sharefs_mod == NULL && ((sharefs_mod = 5094 ddi_modopen("fs/sharefs", 5095 KRTLD_MODE_FIRST, &error)) == NULL)) { 5096 return (SET_ERROR(ENOSYS)); 5097 } 5098 if (zshare_fs == NULL && ((zshare_fs = 5099 (int (*)(enum sharefs_sys_op, share_t *, uint32_t)) 5100 ddi_modsym(sharefs_mod, "sharefs_impl", &error)) == NULL)) { 5101 return (SET_ERROR(ENOSYS)); 5102 } 5103 return (0); 5104 } 5105 #endif /* illumos */ 5106 5107 static int 5108 zfs_ioc_share(zfs_cmd_t *zc) 5109 { 5110 #ifdef illumos 5111 int error; 5112 int opcode; 5113 5114 switch (zc->zc_share.z_sharetype) { 5115 case ZFS_SHARE_NFS: 5116 case ZFS_UNSHARE_NFS: 5117 if (zfs_nfsshare_inited == 0) { 5118 mutex_enter(&zfs_share_lock); 5119 if (nfs_mod == NULL && ((nfs_mod = ddi_modopen("fs/nfs", 5120 KRTLD_MODE_FIRST, &error)) == NULL)) { 5121 mutex_exit(&zfs_share_lock); 5122 return (SET_ERROR(ENOSYS)); 5123 } 5124 if (znfsexport_fs == NULL && 5125 ((znfsexport_fs = (int (*)(void *)) 5126 ddi_modsym(nfs_mod, 5127 "nfs_export", &error)) == NULL)) { 5128 mutex_exit(&zfs_share_lock); 5129 return (SET_ERROR(ENOSYS)); 5130 } 5131 error = zfs_init_sharefs(); 5132 if (error != 0) { 5133 mutex_exit(&zfs_share_lock); 5134 return (SET_ERROR(ENOSYS)); 5135 } 5136 zfs_nfsshare_inited = 1; 5137 mutex_exit(&zfs_share_lock); 5138 } 5139 break; 5140 case ZFS_SHARE_SMB: 5141 case ZFS_UNSHARE_SMB: 5142 if (zfs_smbshare_inited == 0) { 5143 mutex_enter(&zfs_share_lock); 5144 if (smbsrv_mod == NULL && ((smbsrv_mod = 5145 ddi_modopen("drv/smbsrv", 5146 KRTLD_MODE_FIRST, &error)) == NULL)) { 5147 mutex_exit(&zfs_share_lock); 5148 return (SET_ERROR(ENOSYS)); 5149 } 5150 if (zsmbexport_fs == NULL && ((zsmbexport_fs = 5151 (int (*)(void *, boolean_t))ddi_modsym(smbsrv_mod, 5152 "smb_server_share", &error)) == NULL)) { 5153 mutex_exit(&zfs_share_lock); 5154 return (SET_ERROR(ENOSYS)); 5155 } 5156 error = zfs_init_sharefs(); 5157 if (error != 0) { 5158 mutex_exit(&zfs_share_lock); 5159 return (SET_ERROR(ENOSYS)); 5160 } 5161 zfs_smbshare_inited = 1; 5162 mutex_exit(&zfs_share_lock); 5163 } 5164 break; 5165 default: 5166 return (SET_ERROR(EINVAL)); 5167 } 5168 5169 switch (zc->zc_share.z_sharetype) { 5170 case ZFS_SHARE_NFS: 5171 case ZFS_UNSHARE_NFS: 5172 if (error = 5173 znfsexport_fs((void *) 5174 (uintptr_t)zc->zc_share.z_exportdata)) 5175 return (error); 5176 break; 5177 case ZFS_SHARE_SMB: 5178 case ZFS_UNSHARE_SMB: 5179 if (error = zsmbexport_fs((void *) 5180 (uintptr_t)zc->zc_share.z_exportdata, 5181 zc->zc_share.z_sharetype == ZFS_SHARE_SMB ? 5182 B_TRUE: B_FALSE)) { 5183 return (error); 5184 } 5185 break; 5186 } 5187 5188 opcode = (zc->zc_share.z_sharetype == ZFS_SHARE_NFS || 5189 zc->zc_share.z_sharetype == ZFS_SHARE_SMB) ? 5190 SHAREFS_ADD : SHAREFS_REMOVE; 5191 5192 /* 5193 * Add or remove share from sharetab 5194 */ 5195 error = zshare_fs(opcode, 5196 (void *)(uintptr_t)zc->zc_share.z_sharedata, 5197 zc->zc_share.z_sharemax); 5198 5199 return (error); 5200 5201 #else /* !illumos */ 5202 return (ENOSYS); 5203 #endif /* illumos */ 5204 } 5205 5206 ace_t full_access[] = { 5207 {(uid_t)-1, ACE_ALL_PERMS, ACE_EVERYONE, 0} 5208 }; 5209 5210 /* 5211 * inputs: 5212 * zc_name name of containing filesystem 5213 * zc_obj object # beyond which we want next in-use object # 5214 * 5215 * outputs: 5216 * zc_obj next in-use object # 5217 */ 5218 static int 5219 zfs_ioc_next_obj(zfs_cmd_t *zc) 5220 { 5221 objset_t *os = NULL; 5222 int error; 5223 5224 error = dmu_objset_hold(zc->zc_name, FTAG, &os); 5225 if (error != 0) 5226 return (error); 5227 5228 error = dmu_object_next(os, &zc->zc_obj, B_FALSE, 5229 dsl_dataset_phys(os->os_dsl_dataset)->ds_prev_snap_txg); 5230 5231 dmu_objset_rele(os, FTAG); 5232 return (error); 5233 } 5234 5235 /* 5236 * inputs: 5237 * zc_name name of filesystem 5238 * zc_value prefix name for snapshot 5239 * zc_cleanup_fd cleanup-on-exit file descriptor for calling process 5240 * 5241 * outputs: 5242 * zc_value short name of new snapshot 5243 */ 5244 static int 5245 zfs_ioc_tmp_snapshot(zfs_cmd_t *zc) 5246 { 5247 char *snap_name; 5248 char *hold_name; 5249 int error; 5250 minor_t minor; 5251 5252 error = zfs_onexit_fd_hold(zc->zc_cleanup_fd, &minor); 5253 if (error != 0) 5254 return (error); 5255 5256 snap_name = kmem_asprintf("%s-%016llx", zc->zc_value, 5257 (u_longlong_t)ddi_get_lbolt64()); 5258 hold_name = kmem_asprintf("%%%s", zc->zc_value); 5259 5260 error = dsl_dataset_snapshot_tmp(zc->zc_name, snap_name, minor, 5261 hold_name); 5262 if (error == 0) 5263 (void) strcpy(zc->zc_value, snap_name); 5264 strfree(snap_name); 5265 strfree(hold_name); 5266 zfs_onexit_fd_rele(zc->zc_cleanup_fd); 5267 return (error); 5268 } 5269 5270 /* 5271 * inputs: 5272 * zc_name name of "to" snapshot 5273 * zc_value name of "from" snapshot 5274 * zc_cookie file descriptor to write diff data on 5275 * 5276 * outputs: 5277 * dmu_diff_record_t's to the file descriptor 5278 */ 5279 static int 5280 zfs_ioc_diff(zfs_cmd_t *zc) 5281 { 5282 file_t *fp; 5283 offset_t off; 5284 int error; 5285 5286 #ifdef __FreeBSD__ 5287 cap_rights_t rights; 5288 5289 fget_write(curthread, zc->zc_cookie, 5290 cap_rights_init(&rights, CAP_WRITE), &fp); 5291 #else 5292 fp = getf(zc->zc_cookie); 5293 #endif 5294 if (fp == NULL) 5295 return (SET_ERROR(EBADF)); 5296 5297 off = fp->f_offset; 5298 5299 error = dmu_diff(zc->zc_name, zc->zc_value, fp, &off); 5300 5301 if (off >= 0 && off <= MAXOFFSET_T) 5302 fp->f_offset = off; 5303 releasef(zc->zc_cookie); 5304 5305 return (error); 5306 } 5307 5308 #ifdef illumos 5309 /* 5310 * Remove all ACL files in shares dir 5311 */ 5312 static int 5313 zfs_smb_acl_purge(znode_t *dzp) 5314 { 5315 zap_cursor_t zc; 5316 zap_attribute_t zap; 5317 zfsvfs_t *zfsvfs = dzp->z_zfsvfs; 5318 int error; 5319 5320 for (zap_cursor_init(&zc, zfsvfs->z_os, dzp->z_id); 5321 (error = zap_cursor_retrieve(&zc, &zap)) == 0; 5322 zap_cursor_advance(&zc)) { 5323 if ((error = VOP_REMOVE(ZTOV(dzp), zap.za_name, kcred, 5324 NULL, 0)) != 0) 5325 break; 5326 } 5327 zap_cursor_fini(&zc); 5328 return (error); 5329 } 5330 #endif /* illumos */ 5331 5332 static int 5333 zfs_ioc_smb_acl(zfs_cmd_t *zc) 5334 { 5335 #ifdef illumos 5336 vnode_t *vp; 5337 znode_t *dzp; 5338 vnode_t *resourcevp = NULL; 5339 znode_t *sharedir; 5340 zfsvfs_t *zfsvfs; 5341 nvlist_t *nvlist; 5342 char *src, *target; 5343 vattr_t vattr; 5344 vsecattr_t vsec; 5345 int error = 0; 5346 5347 if ((error = lookupname(zc->zc_value, UIO_SYSSPACE, 5348 NO_FOLLOW, NULL, &vp)) != 0) 5349 return (error); 5350 5351 /* Now make sure mntpnt and dataset are ZFS */ 5352 5353 if (strcmp(vp->v_vfsp->mnt_stat.f_fstypename, "zfs") != 0 || 5354 (strcmp((char *)refstr_value(vp->v_vfsp->vfs_resource), 5355 zc->zc_name) != 0)) { 5356 VN_RELE(vp); 5357 return (SET_ERROR(EINVAL)); 5358 } 5359 5360 dzp = VTOZ(vp); 5361 zfsvfs = dzp->z_zfsvfs; 5362 ZFS_ENTER(zfsvfs); 5363 5364 /* 5365 * Create share dir if its missing. 5366 */ 5367 mutex_enter(&zfsvfs->z_lock); 5368 if (zfsvfs->z_shares_dir == 0) { 5369 dmu_tx_t *tx; 5370 5371 tx = dmu_tx_create(zfsvfs->z_os); 5372 dmu_tx_hold_zap(tx, MASTER_NODE_OBJ, TRUE, 5373 ZFS_SHARES_DIR); 5374 dmu_tx_hold_zap(tx, DMU_NEW_OBJECT, FALSE, NULL); 5375 error = dmu_tx_assign(tx, TXG_WAIT); 5376 if (error != 0) { 5377 dmu_tx_abort(tx); 5378 } else { 5379 error = zfs_create_share_dir(zfsvfs, tx); 5380 dmu_tx_commit(tx); 5381 } 5382 if (error != 0) { 5383 mutex_exit(&zfsvfs->z_lock); 5384 VN_RELE(vp); 5385 ZFS_EXIT(zfsvfs); 5386 return (error); 5387 } 5388 } 5389 mutex_exit(&zfsvfs->z_lock); 5390 5391 ASSERT(zfsvfs->z_shares_dir); 5392 if ((error = zfs_zget(zfsvfs, zfsvfs->z_shares_dir, &sharedir)) != 0) { 5393 VN_RELE(vp); 5394 ZFS_EXIT(zfsvfs); 5395 return (error); 5396 } 5397 5398 switch (zc->zc_cookie) { 5399 case ZFS_SMB_ACL_ADD: 5400 vattr.va_mask = AT_MODE|AT_UID|AT_GID|AT_TYPE; 5401 vattr.va_type = VREG; 5402 vattr.va_mode = S_IFREG|0777; 5403 vattr.va_uid = 0; 5404 vattr.va_gid = 0; 5405 5406 vsec.vsa_mask = VSA_ACE; 5407 vsec.vsa_aclentp = &full_access; 5408 vsec.vsa_aclentsz = sizeof (full_access); 5409 vsec.vsa_aclcnt = 1; 5410 5411 error = VOP_CREATE(ZTOV(sharedir), zc->zc_string, 5412 &vattr, EXCL, 0, &resourcevp, kcred, 0, NULL, &vsec); 5413 if (resourcevp) 5414 VN_RELE(resourcevp); 5415 break; 5416 5417 case ZFS_SMB_ACL_REMOVE: 5418 error = VOP_REMOVE(ZTOV(sharedir), zc->zc_string, kcred, 5419 NULL, 0); 5420 break; 5421 5422 case ZFS_SMB_ACL_RENAME: 5423 if ((error = get_nvlist(zc->zc_nvlist_src, 5424 zc->zc_nvlist_src_size, zc->zc_iflags, &nvlist)) != 0) { 5425 VN_RELE(vp); 5426 VN_RELE(ZTOV(sharedir)); 5427 ZFS_EXIT(zfsvfs); 5428 return (error); 5429 } 5430 if (nvlist_lookup_string(nvlist, ZFS_SMB_ACL_SRC, &src) || 5431 nvlist_lookup_string(nvlist, ZFS_SMB_ACL_TARGET, 5432 &target)) { 5433 VN_RELE(vp); 5434 VN_RELE(ZTOV(sharedir)); 5435 ZFS_EXIT(zfsvfs); 5436 nvlist_free(nvlist); 5437 return (error); 5438 } 5439 error = VOP_RENAME(ZTOV(sharedir), src, ZTOV(sharedir), target, 5440 kcred, NULL, 0); 5441 nvlist_free(nvlist); 5442 break; 5443 5444 case ZFS_SMB_ACL_PURGE: 5445 error = zfs_smb_acl_purge(sharedir); 5446 break; 5447 5448 default: 5449 error = SET_ERROR(EINVAL); 5450 break; 5451 } 5452 5453 VN_RELE(vp); 5454 VN_RELE(ZTOV(sharedir)); 5455 5456 ZFS_EXIT(zfsvfs); 5457 5458 return (error); 5459 #else /* !illumos */ 5460 return (EOPNOTSUPP); 5461 #endif /* illumos */ 5462 } 5463 5464 /* 5465 * innvl: { 5466 * "holds" -> { snapname -> holdname (string), ... } 5467 * (optional) "cleanup_fd" -> fd (int32) 5468 * } 5469 * 5470 * outnvl: { 5471 * snapname -> error value (int32) 5472 * ... 5473 * } 5474 */ 5475 /* ARGSUSED */ 5476 static int 5477 zfs_ioc_hold(const char *pool, nvlist_t *args, nvlist_t *errlist) 5478 { 5479 nvpair_t *pair; 5480 nvlist_t *holds; 5481 int cleanup_fd = -1; 5482 int error; 5483 minor_t minor = 0; 5484 5485 error = nvlist_lookup_nvlist(args, "holds", &holds); 5486 if (error != 0) 5487 return (SET_ERROR(EINVAL)); 5488 5489 /* make sure the user didn't pass us any invalid (empty) tags */ 5490 for (pair = nvlist_next_nvpair(holds, NULL); pair != NULL; 5491 pair = nvlist_next_nvpair(holds, pair)) { 5492 char *htag; 5493 5494 error = nvpair_value_string(pair, &htag); 5495 if (error != 0) 5496 return (SET_ERROR(error)); 5497 5498 if (strlen(htag) == 0) 5499 return (SET_ERROR(EINVAL)); 5500 } 5501 5502 if (nvlist_lookup_int32(args, "cleanup_fd", &cleanup_fd) == 0) { 5503 error = zfs_onexit_fd_hold(cleanup_fd, &minor); 5504 if (error != 0) 5505 return (error); 5506 } 5507 5508 error = dsl_dataset_user_hold(holds, minor, errlist); 5509 if (minor != 0) 5510 zfs_onexit_fd_rele(cleanup_fd); 5511 return (error); 5512 } 5513 5514 /* 5515 * innvl is not used. 5516 * 5517 * outnvl: { 5518 * holdname -> time added (uint64 seconds since epoch) 5519 * ... 5520 * } 5521 */ 5522 /* ARGSUSED */ 5523 static int 5524 zfs_ioc_get_holds(const char *snapname, nvlist_t *args, nvlist_t *outnvl) 5525 { 5526 return (dsl_dataset_get_holds(snapname, outnvl)); 5527 } 5528 5529 /* 5530 * innvl: { 5531 * snapname -> { holdname, ... } 5532 * ... 5533 * } 5534 * 5535 * outnvl: { 5536 * snapname -> error value (int32) 5537 * ... 5538 * } 5539 */ 5540 /* ARGSUSED */ 5541 static int 5542 zfs_ioc_release(const char *pool, nvlist_t *holds, nvlist_t *errlist) 5543 { 5544 return (dsl_dataset_user_release(holds, errlist)); 5545 } 5546 5547 /* 5548 * inputs: 5549 * zc_name name of new filesystem or snapshot 5550 * zc_value full name of old snapshot 5551 * 5552 * outputs: 5553 * zc_cookie space in bytes 5554 * zc_objset_type compressed space in bytes 5555 * zc_perm_action uncompressed space in bytes 5556 */ 5557 static int 5558 zfs_ioc_space_written(zfs_cmd_t *zc) 5559 { 5560 int error; 5561 dsl_pool_t *dp; 5562 dsl_dataset_t *new, *old; 5563 5564 error = dsl_pool_hold(zc->zc_name, FTAG, &dp); 5565 if (error != 0) 5566 return (error); 5567 error = dsl_dataset_hold(dp, zc->zc_name, FTAG, &new); 5568 if (error != 0) { 5569 dsl_pool_rele(dp, FTAG); 5570 return (error); 5571 } 5572 error = dsl_dataset_hold(dp, zc->zc_value, FTAG, &old); 5573 if (error != 0) { 5574 dsl_dataset_rele(new, FTAG); 5575 dsl_pool_rele(dp, FTAG); 5576 return (error); 5577 } 5578 5579 error = dsl_dataset_space_written(old, new, &zc->zc_cookie, 5580 &zc->zc_objset_type, &zc->zc_perm_action); 5581 dsl_dataset_rele(old, FTAG); 5582 dsl_dataset_rele(new, FTAG); 5583 dsl_pool_rele(dp, FTAG); 5584 return (error); 5585 } 5586 5587 /* 5588 * innvl: { 5589 * "firstsnap" -> snapshot name 5590 * } 5591 * 5592 * outnvl: { 5593 * "used" -> space in bytes 5594 * "compressed" -> compressed space in bytes 5595 * "uncompressed" -> uncompressed space in bytes 5596 * } 5597 */ 5598 static int 5599 zfs_ioc_space_snaps(const char *lastsnap, nvlist_t *innvl, nvlist_t *outnvl) 5600 { 5601 int error; 5602 dsl_pool_t *dp; 5603 dsl_dataset_t *new, *old; 5604 char *firstsnap; 5605 uint64_t used, comp, uncomp; 5606 5607 if (nvlist_lookup_string(innvl, "firstsnap", &firstsnap) != 0) 5608 return (SET_ERROR(EINVAL)); 5609 5610 error = dsl_pool_hold(lastsnap, FTAG, &dp); 5611 if (error != 0) 5612 return (error); 5613 5614 error = dsl_dataset_hold(dp, lastsnap, FTAG, &new); 5615 if (error == 0 && !new->ds_is_snapshot) { 5616 dsl_dataset_rele(new, FTAG); 5617 error = SET_ERROR(EINVAL); 5618 } 5619 if (error != 0) { 5620 dsl_pool_rele(dp, FTAG); 5621 return (error); 5622 } 5623 error = dsl_dataset_hold(dp, firstsnap, FTAG, &old); 5624 if (error == 0 && !old->ds_is_snapshot) { 5625 dsl_dataset_rele(old, FTAG); 5626 error = SET_ERROR(EINVAL); 5627 } 5628 if (error != 0) { 5629 dsl_dataset_rele(new, FTAG); 5630 dsl_pool_rele(dp, FTAG); 5631 return (error); 5632 } 5633 5634 error = dsl_dataset_space_wouldfree(old, new, &used, &comp, &uncomp); 5635 dsl_dataset_rele(old, FTAG); 5636 dsl_dataset_rele(new, FTAG); 5637 dsl_pool_rele(dp, FTAG); 5638 fnvlist_add_uint64(outnvl, "used", used); 5639 fnvlist_add_uint64(outnvl, "compressed", comp); 5640 fnvlist_add_uint64(outnvl, "uncompressed", uncomp); 5641 return (error); 5642 } 5643 5644 #ifdef __FreeBSD__ 5645 5646 static int 5647 zfs_ioc_jail(zfs_cmd_t *zc) 5648 { 5649 5650 return (zone_dataset_attach(curthread->td_ucred, zc->zc_name, 5651 (int)zc->zc_jailid)); 5652 } 5653 5654 static int 5655 zfs_ioc_unjail(zfs_cmd_t *zc) 5656 { 5657 5658 return (zone_dataset_detach(curthread->td_ucred, zc->zc_name, 5659 (int)zc->zc_jailid)); 5660 } 5661 5662 #endif 5663 5664 /* 5665 * innvl: { 5666 * "fd" -> file descriptor to write stream to (int32) 5667 * (optional) "fromsnap" -> full snap name to send an incremental from 5668 * (optional) "largeblockok" -> (value ignored) 5669 * indicates that blocks > 128KB are permitted 5670 * (optional) "embedok" -> (value ignored) 5671 * presence indicates DRR_WRITE_EMBEDDED records are permitted 5672 * (optional) "resume_object" and "resume_offset" -> (uint64) 5673 * if present, resume send stream from specified object and offset. 5674 * } 5675 * 5676 * outnvl is unused 5677 */ 5678 /* ARGSUSED */ 5679 static int 5680 zfs_ioc_send_new(const char *snapname, nvlist_t *innvl, nvlist_t *outnvl) 5681 { 5682 int error; 5683 offset_t off; 5684 char *fromname = NULL; 5685 int fd; 5686 boolean_t largeblockok; 5687 boolean_t embedok; 5688 uint64_t resumeobj = 0; 5689 uint64_t resumeoff = 0; 5690 5691 error = nvlist_lookup_int32(innvl, "fd", &fd); 5692 if (error != 0) 5693 return (SET_ERROR(EINVAL)); 5694 5695 (void) nvlist_lookup_string(innvl, "fromsnap", &fromname); 5696 5697 largeblockok = nvlist_exists(innvl, "largeblockok"); 5698 embedok = nvlist_exists(innvl, "embedok"); 5699 5700 (void) nvlist_lookup_uint64(innvl, "resume_object", &resumeobj); 5701 (void) nvlist_lookup_uint64(innvl, "resume_offset", &resumeoff); 5702 5703 #ifdef __FreeBSD__ 5704 cap_rights_t rights; 5705 5706 fget_write(curthread, fd, cap_rights_init(&rights, CAP_WRITE), &fp); 5707 #else 5708 file_t *fp = getf(fd); 5709 #endif 5710 if (fp == NULL) 5711 return (SET_ERROR(EBADF)); 5712 5713 off = fp->f_offset; 5714 error = dmu_send(snapname, fromname, embedok, largeblockok, fd, 5715 #ifdef illumos 5716 resumeobj, resumeoff, fp->f_vnode, &off); 5717 #else 5718 resumeobj, resumeoff, fp, &off); 5719 #endif 5720 5721 #ifdef illumos 5722 if (VOP_SEEK(fp->f_vnode, fp->f_offset, &off, NULL) == 0) 5723 fp->f_offset = off; 5724 #else 5725 fp->f_offset = off; 5726 #endif 5727 5728 releasef(fd); 5729 return (error); 5730 } 5731 5732 /* 5733 * Determine approximately how large a zfs send stream will be -- the number 5734 * of bytes that will be written to the fd supplied to zfs_ioc_send_new(). 5735 * 5736 * innvl: { 5737 * (optional) "from" -> full snap or bookmark name to send an incremental 5738 * from 5739 * } 5740 * 5741 * outnvl: { 5742 * "space" -> bytes of space (uint64) 5743 * } 5744 */ 5745 static int 5746 zfs_ioc_send_space(const char *snapname, nvlist_t *innvl, nvlist_t *outnvl) 5747 { 5748 dsl_pool_t *dp; 5749 dsl_dataset_t *tosnap; 5750 int error; 5751 char *fromname; 5752 uint64_t space; 5753 5754 error = dsl_pool_hold(snapname, FTAG, &dp); 5755 if (error != 0) 5756 return (error); 5757 5758 error = dsl_dataset_hold(dp, snapname, FTAG, &tosnap); 5759 if (error != 0) { 5760 dsl_pool_rele(dp, FTAG); 5761 return (error); 5762 } 5763 5764 error = nvlist_lookup_string(innvl, "from", &fromname); 5765 if (error == 0) { 5766 if (strchr(fromname, '@') != NULL) { 5767 /* 5768 * If from is a snapshot, hold it and use the more 5769 * efficient dmu_send_estimate to estimate send space 5770 * size using deadlists. 5771 */ 5772 dsl_dataset_t *fromsnap; 5773 error = dsl_dataset_hold(dp, fromname, FTAG, &fromsnap); 5774 if (error != 0) 5775 goto out; 5776 error = dmu_send_estimate(tosnap, fromsnap, &space); 5777 dsl_dataset_rele(fromsnap, FTAG); 5778 } else if (strchr(fromname, '#') != NULL) { 5779 /* 5780 * If from is a bookmark, fetch the creation TXG of the 5781 * snapshot it was created from and use that to find 5782 * blocks that were born after it. 5783 */ 5784 zfs_bookmark_phys_t frombm; 5785 5786 error = dsl_bookmark_lookup(dp, fromname, tosnap, 5787 &frombm); 5788 if (error != 0) 5789 goto out; 5790 error = dmu_send_estimate_from_txg(tosnap, 5791 frombm.zbm_creation_txg, &space); 5792 } else { 5793 /* 5794 * from is not properly formatted as a snapshot or 5795 * bookmark 5796 */ 5797 error = SET_ERROR(EINVAL); 5798 goto out; 5799 } 5800 } else { 5801 // If estimating the size of a full send, use dmu_send_estimate 5802 error = dmu_send_estimate(tosnap, NULL, &space); 5803 } 5804 5805 fnvlist_add_uint64(outnvl, "space", space); 5806 5807 out: 5808 dsl_dataset_rele(tosnap, FTAG); 5809 dsl_pool_rele(dp, FTAG); 5810 return (error); 5811 } 5812 5813 static zfs_ioc_vec_t zfs_ioc_vec[ZFS_IOC_LAST - ZFS_IOC_FIRST]; 5814 5815 static void 5816 zfs_ioctl_register_legacy(zfs_ioc_t ioc, zfs_ioc_legacy_func_t *func, 5817 zfs_secpolicy_func_t *secpolicy, zfs_ioc_namecheck_t namecheck, 5818 boolean_t log_history, zfs_ioc_poolcheck_t pool_check) 5819 { 5820 zfs_ioc_vec_t *vec = &zfs_ioc_vec[ioc - ZFS_IOC_FIRST]; 5821 5822 ASSERT3U(ioc, >=, ZFS_IOC_FIRST); 5823 ASSERT3U(ioc, <, ZFS_IOC_LAST); 5824 ASSERT3P(vec->zvec_legacy_func, ==, NULL); 5825 ASSERT3P(vec->zvec_func, ==, NULL); 5826 5827 vec->zvec_legacy_func = func; 5828 vec->zvec_secpolicy = secpolicy; 5829 vec->zvec_namecheck = namecheck; 5830 vec->zvec_allow_log = log_history; 5831 vec->zvec_pool_check = pool_check; 5832 } 5833 5834 /* 5835 * See the block comment at the beginning of this file for details on 5836 * each argument to this function. 5837 */ 5838 static void 5839 zfs_ioctl_register(const char *name, zfs_ioc_t ioc, zfs_ioc_func_t *func, 5840 zfs_secpolicy_func_t *secpolicy, zfs_ioc_namecheck_t namecheck, 5841 zfs_ioc_poolcheck_t pool_check, boolean_t smush_outnvlist, 5842 boolean_t allow_log) 5843 { 5844 zfs_ioc_vec_t *vec = &zfs_ioc_vec[ioc - ZFS_IOC_FIRST]; 5845 5846 ASSERT3U(ioc, >=, ZFS_IOC_FIRST); 5847 ASSERT3U(ioc, <, ZFS_IOC_LAST); 5848 ASSERT3P(vec->zvec_legacy_func, ==, NULL); 5849 ASSERT3P(vec->zvec_func, ==, NULL); 5850 5851 /* if we are logging, the name must be valid */ 5852 ASSERT(!allow_log || namecheck != NO_NAME); 5853 5854 vec->zvec_name = name; 5855 vec->zvec_func = func; 5856 vec->zvec_secpolicy = secpolicy; 5857 vec->zvec_namecheck = namecheck; 5858 vec->zvec_pool_check = pool_check; 5859 vec->zvec_smush_outnvlist = smush_outnvlist; 5860 vec->zvec_allow_log = allow_log; 5861 } 5862 5863 static void 5864 zfs_ioctl_register_pool(zfs_ioc_t ioc, zfs_ioc_legacy_func_t *func, 5865 zfs_secpolicy_func_t *secpolicy, boolean_t log_history, 5866 zfs_ioc_poolcheck_t pool_check) 5867 { 5868 zfs_ioctl_register_legacy(ioc, func, secpolicy, 5869 POOL_NAME, log_history, pool_check); 5870 } 5871 5872 static void 5873 zfs_ioctl_register_dataset_nolog(zfs_ioc_t ioc, zfs_ioc_legacy_func_t *func, 5874 zfs_secpolicy_func_t *secpolicy, zfs_ioc_poolcheck_t pool_check) 5875 { 5876 zfs_ioctl_register_legacy(ioc, func, secpolicy, 5877 DATASET_NAME, B_FALSE, pool_check); 5878 } 5879 5880 static void 5881 zfs_ioctl_register_pool_modify(zfs_ioc_t ioc, zfs_ioc_legacy_func_t *func) 5882 { 5883 zfs_ioctl_register_legacy(ioc, func, zfs_secpolicy_config, 5884 POOL_NAME, B_TRUE, POOL_CHECK_SUSPENDED | POOL_CHECK_READONLY); 5885 } 5886 5887 static void 5888 zfs_ioctl_register_pool_meta(zfs_ioc_t ioc, zfs_ioc_legacy_func_t *func, 5889 zfs_secpolicy_func_t *secpolicy) 5890 { 5891 zfs_ioctl_register_legacy(ioc, func, secpolicy, 5892 NO_NAME, B_FALSE, POOL_CHECK_NONE); 5893 } 5894 5895 static void 5896 zfs_ioctl_register_dataset_read_secpolicy(zfs_ioc_t ioc, 5897 zfs_ioc_legacy_func_t *func, zfs_secpolicy_func_t *secpolicy) 5898 { 5899 zfs_ioctl_register_legacy(ioc, func, secpolicy, 5900 DATASET_NAME, B_FALSE, POOL_CHECK_SUSPENDED); 5901 } 5902 5903 static void 5904 zfs_ioctl_register_dataset_read(zfs_ioc_t ioc, zfs_ioc_legacy_func_t *func) 5905 { 5906 zfs_ioctl_register_dataset_read_secpolicy(ioc, func, 5907 zfs_secpolicy_read); 5908 } 5909 5910 static void 5911 zfs_ioctl_register_dataset_modify(zfs_ioc_t ioc, zfs_ioc_legacy_func_t *func, 5912 zfs_secpolicy_func_t *secpolicy) 5913 { 5914 zfs_ioctl_register_legacy(ioc, func, secpolicy, 5915 DATASET_NAME, B_TRUE, POOL_CHECK_SUSPENDED | POOL_CHECK_READONLY); 5916 } 5917 5918 static void 5919 zfs_ioctl_init(void) 5920 { 5921 zfs_ioctl_register("snapshot", ZFS_IOC_SNAPSHOT, 5922 zfs_ioc_snapshot, zfs_secpolicy_snapshot, POOL_NAME, 5923 POOL_CHECK_SUSPENDED | POOL_CHECK_READONLY, B_TRUE, B_TRUE); 5924 5925 zfs_ioctl_register("log_history", ZFS_IOC_LOG_HISTORY, 5926 zfs_ioc_log_history, zfs_secpolicy_log_history, NO_NAME, 5927 POOL_CHECK_SUSPENDED | POOL_CHECK_READONLY, B_FALSE, B_FALSE); 5928 5929 zfs_ioctl_register("space_snaps", ZFS_IOC_SPACE_SNAPS, 5930 zfs_ioc_space_snaps, zfs_secpolicy_read, DATASET_NAME, 5931 POOL_CHECK_SUSPENDED, B_FALSE, B_FALSE); 5932 5933 zfs_ioctl_register("send", ZFS_IOC_SEND_NEW, 5934 zfs_ioc_send_new, zfs_secpolicy_send_new, DATASET_NAME, 5935 POOL_CHECK_SUSPENDED, B_FALSE, B_FALSE); 5936 5937 zfs_ioctl_register("send_space", ZFS_IOC_SEND_SPACE, 5938 zfs_ioc_send_space, zfs_secpolicy_read, DATASET_NAME, 5939 POOL_CHECK_SUSPENDED, B_FALSE, B_FALSE); 5940 5941 zfs_ioctl_register("create", ZFS_IOC_CREATE, 5942 zfs_ioc_create, zfs_secpolicy_create_clone, DATASET_NAME, 5943 POOL_CHECK_SUSPENDED | POOL_CHECK_READONLY, B_TRUE, B_TRUE); 5944 5945 zfs_ioctl_register("clone", ZFS_IOC_CLONE, 5946 zfs_ioc_clone, zfs_secpolicy_create_clone, DATASET_NAME, 5947 POOL_CHECK_SUSPENDED | POOL_CHECK_READONLY, B_TRUE, B_TRUE); 5948 5949 zfs_ioctl_register("destroy_snaps", ZFS_IOC_DESTROY_SNAPS, 5950 zfs_ioc_destroy_snaps, zfs_secpolicy_destroy_snaps, POOL_NAME, 5951 POOL_CHECK_SUSPENDED | POOL_CHECK_READONLY, B_TRUE, B_TRUE); 5952 5953 zfs_ioctl_register("hold", ZFS_IOC_HOLD, 5954 zfs_ioc_hold, zfs_secpolicy_hold, POOL_NAME, 5955 POOL_CHECK_SUSPENDED | POOL_CHECK_READONLY, B_TRUE, B_TRUE); 5956 zfs_ioctl_register("release", ZFS_IOC_RELEASE, 5957 zfs_ioc_release, zfs_secpolicy_release, POOL_NAME, 5958 POOL_CHECK_SUSPENDED | POOL_CHECK_READONLY, B_TRUE, B_TRUE); 5959 5960 zfs_ioctl_register("get_holds", ZFS_IOC_GET_HOLDS, 5961 zfs_ioc_get_holds, zfs_secpolicy_read, DATASET_NAME, 5962 POOL_CHECK_SUSPENDED, B_FALSE, B_FALSE); 5963 5964 zfs_ioctl_register("rollback", ZFS_IOC_ROLLBACK, 5965 zfs_ioc_rollback, zfs_secpolicy_rollback, DATASET_NAME, 5966 POOL_CHECK_SUSPENDED | POOL_CHECK_READONLY, B_FALSE, B_TRUE); 5967 5968 zfs_ioctl_register("bookmark", ZFS_IOC_BOOKMARK, 5969 zfs_ioc_bookmark, zfs_secpolicy_bookmark, POOL_NAME, 5970 POOL_CHECK_SUSPENDED | POOL_CHECK_READONLY, B_TRUE, B_TRUE); 5971 5972 zfs_ioctl_register("get_bookmarks", ZFS_IOC_GET_BOOKMARKS, 5973 zfs_ioc_get_bookmarks, zfs_secpolicy_read, DATASET_NAME, 5974 POOL_CHECK_SUSPENDED, B_FALSE, B_FALSE); 5975 5976 zfs_ioctl_register("destroy_bookmarks", ZFS_IOC_DESTROY_BOOKMARKS, 5977 zfs_ioc_destroy_bookmarks, zfs_secpolicy_destroy_bookmarks, 5978 POOL_NAME, 5979 POOL_CHECK_SUSPENDED | POOL_CHECK_READONLY, B_TRUE, B_TRUE); 5980 5981 /* IOCTLS that use the legacy function signature */ 5982 5983 zfs_ioctl_register_legacy(ZFS_IOC_POOL_FREEZE, zfs_ioc_pool_freeze, 5984 zfs_secpolicy_config, NO_NAME, B_FALSE, POOL_CHECK_READONLY); 5985 5986 zfs_ioctl_register_pool(ZFS_IOC_POOL_CREATE, zfs_ioc_pool_create, 5987 zfs_secpolicy_config, B_TRUE, POOL_CHECK_NONE); 5988 zfs_ioctl_register_pool_modify(ZFS_IOC_POOL_SCAN, 5989 zfs_ioc_pool_scan); 5990 zfs_ioctl_register_pool_modify(ZFS_IOC_POOL_UPGRADE, 5991 zfs_ioc_pool_upgrade); 5992 zfs_ioctl_register_pool_modify(ZFS_IOC_VDEV_ADD, 5993 zfs_ioc_vdev_add); 5994 zfs_ioctl_register_pool_modify(ZFS_IOC_VDEV_REMOVE, 5995 zfs_ioc_vdev_remove); 5996 zfs_ioctl_register_pool_modify(ZFS_IOC_VDEV_SET_STATE, 5997 zfs_ioc_vdev_set_state); 5998 zfs_ioctl_register_pool_modify(ZFS_IOC_VDEV_ATTACH, 5999 zfs_ioc_vdev_attach); 6000 zfs_ioctl_register_pool_modify(ZFS_IOC_VDEV_DETACH, 6001 zfs_ioc_vdev_detach); 6002 zfs_ioctl_register_pool_modify(ZFS_IOC_VDEV_SETPATH, 6003 zfs_ioc_vdev_setpath); 6004 zfs_ioctl_register_pool_modify(ZFS_IOC_VDEV_SETFRU, 6005 zfs_ioc_vdev_setfru); 6006 zfs_ioctl_register_pool_modify(ZFS_IOC_POOL_SET_PROPS, 6007 zfs_ioc_pool_set_props); 6008 zfs_ioctl_register_pool_modify(ZFS_IOC_VDEV_SPLIT, 6009 zfs_ioc_vdev_split); 6010 zfs_ioctl_register_pool_modify(ZFS_IOC_POOL_REGUID, 6011 zfs_ioc_pool_reguid); 6012 6013 zfs_ioctl_register_pool_meta(ZFS_IOC_POOL_CONFIGS, 6014 zfs_ioc_pool_configs, zfs_secpolicy_none); 6015 zfs_ioctl_register_pool_meta(ZFS_IOC_POOL_TRYIMPORT, 6016 zfs_ioc_pool_tryimport, zfs_secpolicy_config); 6017 zfs_ioctl_register_pool_meta(ZFS_IOC_INJECT_FAULT, 6018 zfs_ioc_inject_fault, zfs_secpolicy_inject); 6019 zfs_ioctl_register_pool_meta(ZFS_IOC_CLEAR_FAULT, 6020 zfs_ioc_clear_fault, zfs_secpolicy_inject); 6021 zfs_ioctl_register_pool_meta(ZFS_IOC_INJECT_LIST_NEXT, 6022 zfs_ioc_inject_list_next, zfs_secpolicy_inject); 6023 6024 /* 6025 * pool destroy, and export don't log the history as part of 6026 * zfsdev_ioctl, but rather zfs_ioc_pool_export 6027 * does the logging of those commands. 6028 */ 6029 zfs_ioctl_register_pool(ZFS_IOC_POOL_DESTROY, zfs_ioc_pool_destroy, 6030 zfs_secpolicy_config, B_FALSE, POOL_CHECK_NONE); 6031 zfs_ioctl_register_pool(ZFS_IOC_POOL_EXPORT, zfs_ioc_pool_export, 6032 zfs_secpolicy_config, B_FALSE, POOL_CHECK_NONE); 6033 6034 zfs_ioctl_register_pool(ZFS_IOC_POOL_STATS, zfs_ioc_pool_stats, 6035 zfs_secpolicy_read, B_FALSE, POOL_CHECK_NONE); 6036 zfs_ioctl_register_pool(ZFS_IOC_POOL_GET_PROPS, zfs_ioc_pool_get_props, 6037 zfs_secpolicy_read, B_FALSE, POOL_CHECK_NONE); 6038 6039 zfs_ioctl_register_pool(ZFS_IOC_ERROR_LOG, zfs_ioc_error_log, 6040 zfs_secpolicy_inject, B_FALSE, POOL_CHECK_NONE); 6041 zfs_ioctl_register_pool(ZFS_IOC_DSOBJ_TO_DSNAME, 6042 zfs_ioc_dsobj_to_dsname, 6043 zfs_secpolicy_diff, B_FALSE, POOL_CHECK_NONE); 6044 zfs_ioctl_register_pool(ZFS_IOC_POOL_GET_HISTORY, 6045 zfs_ioc_pool_get_history, 6046 zfs_secpolicy_config, B_FALSE, POOL_CHECK_SUSPENDED); 6047 6048 zfs_ioctl_register_pool(ZFS_IOC_POOL_IMPORT, zfs_ioc_pool_import, 6049 zfs_secpolicy_config, B_TRUE, POOL_CHECK_NONE); 6050 6051 zfs_ioctl_register_pool(ZFS_IOC_CLEAR, zfs_ioc_clear, 6052 zfs_secpolicy_config, B_TRUE, POOL_CHECK_NONE); 6053 zfs_ioctl_register_pool(ZFS_IOC_POOL_REOPEN, zfs_ioc_pool_reopen, 6054 zfs_secpolicy_config, B_TRUE, POOL_CHECK_SUSPENDED); 6055 6056 zfs_ioctl_register_dataset_read(ZFS_IOC_SPACE_WRITTEN, 6057 zfs_ioc_space_written); 6058 zfs_ioctl_register_dataset_read(ZFS_IOC_OBJSET_RECVD_PROPS, 6059 zfs_ioc_objset_recvd_props); 6060 zfs_ioctl_register_dataset_read(ZFS_IOC_NEXT_OBJ, 6061 zfs_ioc_next_obj); 6062 zfs_ioctl_register_dataset_read(ZFS_IOC_GET_FSACL, 6063 zfs_ioc_get_fsacl); 6064 zfs_ioctl_register_dataset_read(ZFS_IOC_OBJSET_STATS, 6065 zfs_ioc_objset_stats); 6066 zfs_ioctl_register_dataset_read(ZFS_IOC_OBJSET_ZPLPROPS, 6067 zfs_ioc_objset_zplprops); 6068 zfs_ioctl_register_dataset_read(ZFS_IOC_DATASET_LIST_NEXT, 6069 zfs_ioc_dataset_list_next); 6070 zfs_ioctl_register_dataset_read(ZFS_IOC_SNAPSHOT_LIST_NEXT, 6071 zfs_ioc_snapshot_list_next); 6072 zfs_ioctl_register_dataset_read(ZFS_IOC_SEND_PROGRESS, 6073 zfs_ioc_send_progress); 6074 6075 zfs_ioctl_register_dataset_read_secpolicy(ZFS_IOC_DIFF, 6076 zfs_ioc_diff, zfs_secpolicy_diff); 6077 zfs_ioctl_register_dataset_read_secpolicy(ZFS_IOC_OBJ_TO_STATS, 6078 zfs_ioc_obj_to_stats, zfs_secpolicy_diff); 6079 zfs_ioctl_register_dataset_read_secpolicy(ZFS_IOC_OBJ_TO_PATH, 6080 zfs_ioc_obj_to_path, zfs_secpolicy_diff); 6081 zfs_ioctl_register_dataset_read_secpolicy(ZFS_IOC_USERSPACE_ONE, 6082 zfs_ioc_userspace_one, zfs_secpolicy_userspace_one); 6083 zfs_ioctl_register_dataset_read_secpolicy(ZFS_IOC_USERSPACE_MANY, 6084 zfs_ioc_userspace_many, zfs_secpolicy_userspace_many); 6085 zfs_ioctl_register_dataset_read_secpolicy(ZFS_IOC_SEND, 6086 zfs_ioc_send, zfs_secpolicy_send); 6087 6088 zfs_ioctl_register_dataset_modify(ZFS_IOC_SET_PROP, zfs_ioc_set_prop, 6089 zfs_secpolicy_none); 6090 zfs_ioctl_register_dataset_modify(ZFS_IOC_DESTROY, zfs_ioc_destroy, 6091 zfs_secpolicy_destroy); 6092 zfs_ioctl_register_dataset_modify(ZFS_IOC_RENAME, zfs_ioc_rename, 6093 zfs_secpolicy_rename); 6094 zfs_ioctl_register_dataset_modify(ZFS_IOC_RECV, zfs_ioc_recv, 6095 zfs_secpolicy_recv); 6096 zfs_ioctl_register_dataset_modify(ZFS_IOC_PROMOTE, zfs_ioc_promote, 6097 zfs_secpolicy_promote); 6098 zfs_ioctl_register_dataset_modify(ZFS_IOC_INHERIT_PROP, 6099 zfs_ioc_inherit_prop, zfs_secpolicy_inherit_prop); 6100 zfs_ioctl_register_dataset_modify(ZFS_IOC_SET_FSACL, zfs_ioc_set_fsacl, 6101 zfs_secpolicy_set_fsacl); 6102 6103 zfs_ioctl_register_dataset_nolog(ZFS_IOC_SHARE, zfs_ioc_share, 6104 zfs_secpolicy_share, POOL_CHECK_NONE); 6105 zfs_ioctl_register_dataset_nolog(ZFS_IOC_SMB_ACL, zfs_ioc_smb_acl, 6106 zfs_secpolicy_smb_acl, POOL_CHECK_NONE); 6107 zfs_ioctl_register_dataset_nolog(ZFS_IOC_USERSPACE_UPGRADE, 6108 zfs_ioc_userspace_upgrade, zfs_secpolicy_userspace_upgrade, 6109 POOL_CHECK_SUSPENDED | POOL_CHECK_READONLY); 6110 zfs_ioctl_register_dataset_nolog(ZFS_IOC_TMP_SNAPSHOT, 6111 zfs_ioc_tmp_snapshot, zfs_secpolicy_tmp_snapshot, 6112 POOL_CHECK_SUSPENDED | POOL_CHECK_READONLY); 6113 6114 #ifdef __FreeBSD__ 6115 zfs_ioctl_register_dataset_nolog(ZFS_IOC_JAIL, zfs_ioc_jail, 6116 zfs_secpolicy_config, POOL_CHECK_NONE); 6117 zfs_ioctl_register_dataset_nolog(ZFS_IOC_UNJAIL, zfs_ioc_unjail, 6118 zfs_secpolicy_config, POOL_CHECK_NONE); 6119 zfs_ioctl_register("fbsd_nextboot", ZFS_IOC_NEXTBOOT, 6120 zfs_ioc_nextboot, zfs_secpolicy_config, NO_NAME, 6121 POOL_CHECK_NONE, B_FALSE, B_FALSE); 6122 #endif 6123 } 6124 6125 int 6126 pool_status_check(const char *name, zfs_ioc_namecheck_t type, 6127 zfs_ioc_poolcheck_t check) 6128 { 6129 spa_t *spa; 6130 int error; 6131 6132 ASSERT(type == POOL_NAME || type == DATASET_NAME); 6133 6134 if (check & POOL_CHECK_NONE) 6135 return (0); 6136 6137 error = spa_open(name, &spa, FTAG); 6138 if (error == 0) { 6139 if ((check & POOL_CHECK_SUSPENDED) && spa_suspended(spa)) 6140 error = SET_ERROR(EAGAIN); 6141 else if ((check & POOL_CHECK_READONLY) && !spa_writeable(spa)) 6142 error = SET_ERROR(EROFS); 6143 spa_close(spa, FTAG); 6144 } 6145 return (error); 6146 } 6147 6148 /* 6149 * Find a free minor number. 6150 */ 6151 minor_t 6152 zfsdev_minor_alloc(void) 6153 { 6154 static minor_t last_minor; 6155 minor_t m; 6156 6157 #ifndef __NetBSD__ 6158 ASSERT(MUTEX_HELD(&spa_namespace_lock)); 6159 #endif 6160 6161 for (m = last_minor + 1; m != last_minor; m++) { 6162 if (m > ZFSDEV_MAX_MINOR) 6163 m = 1; 6164 if (ddi_get_soft_state(zfsdev_state, m) == NULL) { 6165 last_minor = m; 6166 return (m); 6167 } 6168 } 6169 6170 return (0); 6171 } 6172 6173 #ifdef __FreeBSD__ 6174 static int 6175 zfs_ctldev_init(struct cdev *devp) 6176 #else 6177 static int 6178 zfs_ctldev_init(dev_t *devp) 6179 #endif 6180 { 6181 minor_t minor; 6182 zfs_soft_state_t *zs; 6183 6184 ASSERT(MUTEX_HELD(&spa_namespace_lock)); 6185 6186 minor = zfsdev_minor_alloc(); 6187 if (minor == 0) 6188 return (SET_ERROR(ENXIO)); 6189 6190 if (ddi_soft_state_zalloc(zfsdev_state, minor) != DDI_SUCCESS) 6191 return (SET_ERROR(EAGAIN)); 6192 6193 #ifdef __FreeBSD__ 6194 devfs_set_cdevpriv((void *)(uintptr_t)minor, zfsdev_close); 6195 #else 6196 *devp = makedev(major(*devp), minor); 6197 #endif 6198 6199 zs = ddi_get_soft_state(zfsdev_state, minor); 6200 zs->zss_type = ZSST_CTLDEV; 6201 zfs_onexit_init((zfs_onexit_t **)&zs->zss_data); 6202 6203 return (0); 6204 } 6205 6206 static void 6207 zfs_ctldev_destroy(zfs_onexit_t *zo, minor_t minor) 6208 { 6209 ASSERT(MUTEX_HELD(&spa_namespace_lock)); 6210 6211 zfs_onexit_destroy(zo); 6212 ddi_soft_state_free(zfsdev_state, minor); 6213 } 6214 6215 void * 6216 zfsdev_get_soft_state(minor_t minor, enum zfs_soft_state_type which) 6217 { 6218 zfs_soft_state_t *zp; 6219 6220 zp = ddi_get_soft_state(zfsdev_state, minor); 6221 if (zp == NULL || zp->zss_type != which) 6222 return (NULL); 6223 6224 return (zp->zss_data); 6225 } 6226 6227 #ifdef __FreeBSD__ 6228 static int 6229 zfsdev_open(struct cdev *devp, int flag, int mode, struct thread *td) 6230 #endif 6231 #ifdef __NetBSD__ 6232 static int 6233 zfsdev_open(dev_t *devp, int flag, int otyp, cred_t *cr) 6234 #endif 6235 { 6236 int error = 0; 6237 6238 #ifndef __FreeBSD__ 6239 if (getminor(*devp) != 0) 6240 return (zvol_open(devp, flag, otyp, cr)); 6241 #endif 6242 6243 /* This is the control device. Allocate a new minor if requested. */ 6244 if (flag & FEXCL) { 6245 mutex_enter(&spa_namespace_lock); 6246 error = zfs_ctldev_init(devp); 6247 mutex_exit(&spa_namespace_lock); 6248 } 6249 6250 return (error); 6251 } 6252 6253 #ifdef __FreeBSD__ 6254 static void 6255 zfsdev_close(void *data) 6256 #endif 6257 #ifdef __NetBSD__ 6258 static int 6259 zfsdev_close(dev_t dev, int flag, int otyp, cred_t *cr) 6260 #endif 6261 { 6262 zfs_onexit_t *zo; 6263 #ifdef __FreeBSD__ 6264 minor_t minor = (minor_t)(uintptr_t)data; 6265 #endif 6266 #ifdef __NetBSD__ 6267 minor_t minor = getminor(dev); 6268 #endif 6269 6270 if (minor == 0) 6271 #ifdef __FreeBSD__ 6272 return; 6273 #else 6274 return (0); 6275 #endif 6276 6277 mutex_enter(&spa_namespace_lock); 6278 zo = zfsdev_get_soft_state(minor, ZSST_CTLDEV); 6279 if (zo == NULL) { 6280 mutex_exit(&spa_namespace_lock); 6281 #ifdef __FreeBSD__ 6282 return; 6283 #else 6284 return zvol_close(dev, flag, otyp, cr); 6285 return 0; 6286 #endif 6287 } 6288 zfs_ctldev_destroy(zo, minor); 6289 mutex_exit(&spa_namespace_lock); 6290 6291 #ifndef __FreeBSD__ 6292 return (0); 6293 #endif 6294 } 6295 6296 #ifdef __FreeBSD__ 6297 static int 6298 zfsdev_ioctl(struct cdev *dev, u_long zcmd, caddr_t arg, int flag, 6299 struct thread *td) 6300 #endif 6301 #ifdef __NetBSD__ 6302 static int 6303 zfsdev_ioctl(dev_t dev, u_long zcmd, intptr_t iarg, int flag, cred_t *cr, int *rvalp) 6304 #endif 6305 { 6306 zfs_cmd_t *zc; 6307 uint_t vecnum; 6308 int error, rc, len; 6309 zfs_iocparm_t *zc_iocparm; 6310 int cflag, cmd, oldvecnum; 6311 boolean_t newioc, compat; 6312 void *compat_zc = NULL; 6313 #ifdef __FreeBSD__ 6314 cred_t *cr = td->td_ucred; 6315 #endif 6316 const zfs_ioc_vec_t *vec; 6317 char *saved_poolname = NULL; 6318 nvlist_t *innvl = NULL; 6319 #ifdef __NetBSD__ 6320 caddr_t arg = (caddr_t)iarg; 6321 #endif 6322 6323 #if defined(illumos) || defined(__NetBSD__) 6324 minor_t minor = getminor(dev); 6325 6326 if (minor != 0 && 6327 zfsdev_get_soft_state(minor, ZSST_CTLDEV) == NULL) 6328 return (zvol_ioctl(dev, zcmd, iarg, flag, cr, rvalp)); 6329 #endif 6330 #ifdef illumos 6331 vecnum = cmd - ZFS_IOC_FIRST; 6332 ASSERT3U(getmajor(dev), ==, ddi_driver_major(zfs_dip)); 6333 #endif 6334 6335 cflag = ZFS_CMD_COMPAT_NONE; 6336 compat = B_FALSE; 6337 newioc = B_TRUE; /* "new" style (zfs_iocparm_t) ioctl */ 6338 len = IOCPARM_LEN(zcmd); 6339 vecnum = cmd = zcmd & 0xff; 6340 6341 /* 6342 * Check if we are talking to supported older binaries 6343 * and translate zfs_cmd if necessary 6344 */ 6345 if (len != sizeof(zfs_iocparm_t)) { 6346 newioc = B_FALSE; 6347 compat = B_TRUE; 6348 6349 vecnum = cmd; 6350 6351 switch (len) { 6352 case sizeof(zfs_cmd_zcmd_t): 6353 cflag = ZFS_CMD_COMPAT_LZC; 6354 break; 6355 case sizeof(zfs_cmd_deadman_t): 6356 cflag = ZFS_CMD_COMPAT_DEADMAN; 6357 break; 6358 case sizeof(zfs_cmd_v28_t): 6359 cflag = ZFS_CMD_COMPAT_V28; 6360 break; 6361 case sizeof(zfs_cmd_v15_t): 6362 cflag = ZFS_CMD_COMPAT_V15; 6363 vecnum = zfs_ioctl_v15_to_v28[cmd]; 6364 6365 /* 6366 * Return without further handling 6367 * if the command is blacklisted. 6368 */ 6369 if (vecnum == ZFS_IOC_COMPAT_PASS) 6370 return (0); 6371 else if (vecnum == ZFS_IOC_COMPAT_FAIL) 6372 return (ENOTSUP); 6373 break; 6374 default: 6375 return (EINVAL); 6376 } 6377 } 6378 6379 if (vecnum >= sizeof (zfs_ioc_vec) / sizeof (zfs_ioc_vec[0])) 6380 return (SET_ERROR(EINVAL)); 6381 vec = &zfs_ioc_vec[vecnum]; 6382 6383 zc = kmem_zalloc(sizeof(zfs_cmd_t), KM_SLEEP); 6384 6385 #ifdef illumos 6386 error = ddi_copyin((void *)arg, zc, sizeof (zfs_cmd_t), flag); 6387 if (error != 0) { 6388 error = SET_ERROR(EFAULT); 6389 goto out; 6390 } 6391 #else /* !illumos */ 6392 6393 bzero(zc, sizeof(zfs_cmd_t)); 6394 6395 if (newioc) { 6396 zc_iocparm = (void *)arg; 6397 6398 switch (zc_iocparm->zfs_ioctl_version) { 6399 case ZFS_IOCVER_CURRENT: 6400 if (zc_iocparm->zfs_cmd_size != sizeof(zfs_cmd_t)) { 6401 error = SET_ERROR(EINVAL); 6402 goto out; 6403 } 6404 break; 6405 case ZFS_IOCVER_INLANES: 6406 if (zc_iocparm->zfs_cmd_size != sizeof(zfs_cmd_inlanes_t)) { 6407 error = SET_ERROR(EFAULT); 6408 goto out; 6409 } 6410 compat = B_TRUE; 6411 cflag = ZFS_CMD_COMPAT_INLANES; 6412 break; 6413 case ZFS_IOCVER_RESUME: 6414 if (zc_iocparm->zfs_cmd_size != sizeof(zfs_cmd_resume_t)) { 6415 error = SET_ERROR(EFAULT); 6416 goto out; 6417 } 6418 compat = B_TRUE; 6419 cflag = ZFS_CMD_COMPAT_RESUME; 6420 break; 6421 case ZFS_IOCVER_EDBP: 6422 if (zc_iocparm->zfs_cmd_size != sizeof(zfs_cmd_edbp_t)) { 6423 error = SET_ERROR(EFAULT); 6424 goto out; 6425 } 6426 compat = B_TRUE; 6427 cflag = ZFS_CMD_COMPAT_EDBP; 6428 break; 6429 case ZFS_IOCVER_ZCMD: 6430 if (zc_iocparm->zfs_cmd_size > sizeof(zfs_cmd_t) || 6431 zc_iocparm->zfs_cmd_size < sizeof(zfs_cmd_zcmd_t)) { 6432 error = SET_ERROR(EFAULT); 6433 goto out; 6434 } 6435 compat = B_TRUE; 6436 cflag = ZFS_CMD_COMPAT_ZCMD; 6437 break; 6438 default: 6439 error = SET_ERROR(EINVAL); 6440 goto out; 6441 /* NOTREACHED */ 6442 } 6443 6444 if (compat) { 6445 ASSERT(sizeof(zfs_cmd_t) >= zc_iocparm->zfs_cmd_size); 6446 compat_zc = kmem_zalloc(sizeof(zfs_cmd_t), KM_SLEEP); 6447 bzero(compat_zc, sizeof(zfs_cmd_t)); 6448 6449 error = ddi_copyin((void *)(uintptr_t)zc_iocparm->zfs_cmd, 6450 compat_zc, zc_iocparm->zfs_cmd_size, flag); 6451 if (error != 0) { 6452 error = SET_ERROR(EFAULT); 6453 goto out; 6454 } 6455 } else { 6456 error = ddi_copyin((void *)(uintptr_t)zc_iocparm->zfs_cmd, 6457 zc, zc_iocparm->zfs_cmd_size, flag); 6458 if (error != 0) { 6459 error = SET_ERROR(EFAULT); 6460 goto out; 6461 } 6462 } 6463 } else 6464 zc_iocparm = NULL; 6465 6466 if (compat) { 6467 if (newioc) { 6468 ASSERT(compat_zc != NULL); 6469 zfs_cmd_compat_get(zc, compat_zc, cflag); 6470 } else { 6471 ASSERT(compat_zc == NULL); 6472 zfs_cmd_compat_get(zc, arg, cflag); 6473 } 6474 oldvecnum = vecnum; 6475 error = zfs_ioctl_compat_pre(zc, &vecnum, cflag); 6476 if (error != 0) 6477 goto out; 6478 if (oldvecnum != vecnum) 6479 vec = &zfs_ioc_vec[vecnum]; 6480 } 6481 #endif /* !illumos */ 6482 6483 zc->zc_iflags = flag & FKIOCTL; 6484 if (zc->zc_nvlist_src_size != 0) { 6485 error = get_nvlist(zc->zc_nvlist_src, zc->zc_nvlist_src_size, 6486 zc->zc_iflags, &innvl); 6487 if (error != 0) 6488 goto out; 6489 } 6490 6491 /* rewrite innvl for backwards compatibility */ 6492 if (compat) 6493 innvl = zfs_ioctl_compat_innvl(zc, innvl, vecnum, cflag); 6494 6495 /* 6496 * Ensure that all pool/dataset names are valid before we pass down to 6497 * the lower layers. 6498 */ 6499 zc->zc_name[sizeof (zc->zc_name) - 1] = '\0'; 6500 switch (vec->zvec_namecheck) { 6501 case POOL_NAME: 6502 if (pool_namecheck(zc->zc_name, NULL, NULL) != 0) 6503 error = SET_ERROR(EINVAL); 6504 else 6505 error = pool_status_check(zc->zc_name, 6506 vec->zvec_namecheck, vec->zvec_pool_check); 6507 break; 6508 6509 case DATASET_NAME: 6510 if (dataset_namecheck(zc->zc_name, NULL, NULL) != 0) 6511 error = SET_ERROR(EINVAL); 6512 else 6513 error = pool_status_check(zc->zc_name, 6514 vec->zvec_namecheck, vec->zvec_pool_check); 6515 break; 6516 6517 case NO_NAME: 6518 break; 6519 } 6520 6521 if (error == 0) 6522 error = vec->zvec_secpolicy(zc, innvl, cr); 6523 6524 if (error != 0) 6525 goto out; 6526 6527 /* legacy ioctls can modify zc_name */ 6528 len = strcspn(zc->zc_name, "/@#") + 1; 6529 saved_poolname = kmem_alloc(len, KM_SLEEP); 6530 (void) strlcpy(saved_poolname, zc->zc_name, len); 6531 6532 if (vec->zvec_func != NULL) { 6533 nvlist_t *outnvl; 6534 int puterror = 0; 6535 spa_t *spa; 6536 nvlist_t *lognv = NULL; 6537 6538 ASSERT(vec->zvec_legacy_func == NULL); 6539 6540 /* 6541 * Add the innvl to the lognv before calling the func, 6542 * in case the func changes the innvl. 6543 */ 6544 if (vec->zvec_allow_log) { 6545 lognv = fnvlist_alloc(); 6546 fnvlist_add_string(lognv, ZPOOL_HIST_IOCTL, 6547 vec->zvec_name); 6548 if (!nvlist_empty(innvl)) { 6549 fnvlist_add_nvlist(lognv, ZPOOL_HIST_INPUT_NVL, 6550 innvl); 6551 } 6552 } 6553 6554 outnvl = fnvlist_alloc(); 6555 error = vec->zvec_func(zc->zc_name, innvl, outnvl); 6556 6557 if (error == 0 && vec->zvec_allow_log && 6558 spa_open(zc->zc_name, &spa, FTAG) == 0) { 6559 if (!nvlist_empty(outnvl)) { 6560 fnvlist_add_nvlist(lognv, ZPOOL_HIST_OUTPUT_NVL, 6561 outnvl); 6562 } 6563 (void) spa_history_log_nvl(spa, lognv); 6564 spa_close(spa, FTAG); 6565 } 6566 fnvlist_free(lognv); 6567 6568 /* rewrite outnvl for backwards compatibility */ 6569 if (compat) 6570 outnvl = zfs_ioctl_compat_outnvl(zc, outnvl, vecnum, 6571 cflag); 6572 6573 if (!nvlist_empty(outnvl) || zc->zc_nvlist_dst_size != 0) { 6574 int smusherror = 0; 6575 if (vec->zvec_smush_outnvlist) { 6576 smusherror = nvlist_smush(outnvl, 6577 zc->zc_nvlist_dst_size); 6578 } 6579 if (smusherror == 0) 6580 puterror = put_nvlist(zc, outnvl); 6581 } 6582 6583 if (puterror != 0) 6584 error = puterror; 6585 6586 nvlist_free(outnvl); 6587 } else { 6588 error = vec->zvec_legacy_func(zc); 6589 } 6590 6591 out: 6592 nvlist_free(innvl); 6593 6594 #ifdef illumos 6595 rc = ddi_copyout(zc, (void *)arg, sizeof (zfs_cmd_t), flag); 6596 if (error == 0 && rc != 0) 6597 error = SET_ERROR(EFAULT); 6598 #else 6599 if (compat) { 6600 zfs_ioctl_compat_post(zc, cmd, cflag); 6601 if (newioc) { 6602 ASSERT(compat_zc != NULL); 6603 ASSERT(sizeof(zfs_cmd_t) >= zc_iocparm->zfs_cmd_size); 6604 6605 zfs_cmd_compat_put(zc, compat_zc, vecnum, cflag); 6606 rc = ddi_copyout(compat_zc, 6607 (void *)(uintptr_t)zc_iocparm->zfs_cmd, 6608 zc_iocparm->zfs_cmd_size, flag); 6609 if (error == 0 && rc != 0) 6610 error = SET_ERROR(EFAULT); 6611 kmem_free(compat_zc, sizeof (zfs_cmd_t)); 6612 } else { 6613 zfs_cmd_compat_put(zc, arg, vecnum, cflag); 6614 } 6615 } else { 6616 ASSERT(newioc); 6617 6618 rc = ddi_copyout(zc, (void *)(uintptr_t)zc_iocparm->zfs_cmd, 6619 sizeof (zfs_cmd_t), flag); 6620 if (error == 0 && rc != 0) 6621 error = SET_ERROR(EFAULT); 6622 } 6623 #endif 6624 if (error == 0 && vec->zvec_allow_log) { 6625 char *s = tsd_get(zfs_allow_log_key); 6626 if (s != NULL) 6627 strfree(s); 6628 (void) tsd_set(zfs_allow_log_key, saved_poolname); 6629 } else { 6630 if (saved_poolname != NULL) 6631 strfree(saved_poolname); 6632 } 6633 6634 kmem_free(zc, sizeof (zfs_cmd_t)); 6635 return (error); 6636 } 6637 6638 static void 6639 zfs_allow_log_destroy(void *arg) 6640 { 6641 char *poolname = arg; 6642 strfree(poolname); 6643 } 6644 6645 #ifdef illumos 6646 static int 6647 zfs_attach(dev_info_t *dip, ddi_attach_cmd_t cmd) 6648 { 6649 if (cmd != DDI_ATTACH) 6650 return (DDI_FAILURE); 6651 6652 if (ddi_create_minor_node(dip, "zfs", S_IFCHR, 0, 6653 DDI_PSEUDO, 0) == DDI_FAILURE) 6654 return (DDI_FAILURE); 6655 6656 zfs_dip = dip; 6657 6658 ddi_report_dev(dip); 6659 6660 return (DDI_SUCCESS); 6661 } 6662 6663 static int 6664 zfs_detach(dev_info_t *dip, ddi_detach_cmd_t cmd) 6665 { 6666 if (spa_busy() || zfs_busy() || zvol_busy()) 6667 return (DDI_FAILURE); 6668 6669 if (cmd != DDI_DETACH) 6670 return (DDI_FAILURE); 6671 6672 zfs_dip = NULL; 6673 6674 ddi_prop_remove_all(dip); 6675 ddi_remove_minor_node(dip, NULL); 6676 6677 return (DDI_SUCCESS); 6678 } 6679 6680 /*ARGSUSED*/ 6681 static int 6682 zfs_info(dev_info_t *dip, ddi_info_cmd_t infocmd, void *arg, void **result) 6683 { 6684 switch (infocmd) { 6685 case DDI_INFO_DEVT2DEVINFO: 6686 *result = zfs_dip; 6687 return (DDI_SUCCESS); 6688 6689 case DDI_INFO_DEVT2INSTANCE: 6690 *result = (void *)0; 6691 return (DDI_SUCCESS); 6692 } 6693 6694 return (DDI_FAILURE); 6695 } 6696 6697 /* 6698 * OK, so this is a little weird. 6699 * 6700 * /dev/zfs is the control node, i.e. minor 0. 6701 * /dev/zvol/[r]dsk/pool/dataset are the zvols, minor > 0. 6702 * 6703 * /dev/zfs has basically nothing to do except serve up ioctls, 6704 * so most of the standard driver entry points are in zvol.c. 6705 */ 6706 static struct cb_ops zfs_cb_ops = { 6707 zfsdev_open, /* open */ 6708 zfsdev_close, /* close */ 6709 zvol_strategy, /* strategy */ 6710 nodev, /* print */ 6711 zvol_dump, /* dump */ 6712 zvol_read, /* read */ 6713 zvol_write, /* write */ 6714 zfsdev_ioctl, /* ioctl */ 6715 nodev, /* devmap */ 6716 nodev, /* mmap */ 6717 nodev, /* segmap */ 6718 nochpoll, /* poll */ 6719 ddi_prop_op, /* prop_op */ 6720 NULL, /* streamtab */ 6721 D_NEW | D_MP | D_64BIT, /* Driver compatibility flag */ 6722 CB_REV, /* version */ 6723 nodev, /* async read */ 6724 nodev, /* async write */ 6725 }; 6726 6727 static struct dev_ops zfs_dev_ops = { 6728 DEVO_REV, /* version */ 6729 0, /* refcnt */ 6730 zfs_info, /* info */ 6731 nulldev, /* identify */ 6732 nulldev, /* probe */ 6733 zfs_attach, /* attach */ 6734 zfs_detach, /* detach */ 6735 nodev, /* reset */ 6736 &zfs_cb_ops, /* driver operations */ 6737 NULL, /* no bus operations */ 6738 NULL, /* power */ 6739 ddi_quiesce_not_needed, /* quiesce */ 6740 }; 6741 6742 static struct modldrv zfs_modldrv = { 6743 &mod_driverops, 6744 "ZFS storage pool", 6745 &zfs_dev_ops 6746 }; 6747 6748 static struct modlinkage modlinkage = { 6749 MODREV_1, 6750 (void *)&zfs_modlfs, 6751 (void *)&zfs_modldrv, 6752 NULL 6753 }; 6754 6755 int 6756 _init(void) 6757 { 6758 int error; 6759 6760 spa_init(FREAD | FWRITE); 6761 zfs_init(); 6762 zvol_init(); 6763 zfs_ioctl_init(); 6764 6765 if ((error = mod_install(&modlinkage)) != 0) { 6766 zvol_fini(); 6767 zfs_fini(); 6768 spa_fini(); 6769 return (error); 6770 } 6771 6772 tsd_create(&zfs_fsyncer_key, NULL); 6773 tsd_create(&zfs_putpages_key, NULL); 6774 tsd_create(&rrw_tsd_key, rrw_tsd_destroy); 6775 tsd_create(&zfs_allow_log_key, zfs_allow_log_destroy); 6776 6777 error = ldi_ident_from_mod(&modlinkage, &zfs_li); 6778 ASSERT(error == 0); 6779 mutex_init(&zfs_share_lock, NULL, MUTEX_DEFAULT, NULL); 6780 6781 return (0); 6782 } 6783 6784 int 6785 _fini(void) 6786 { 6787 int error; 6788 6789 if (spa_busy() || zfs_busy() || zvol_busy() || zio_injection_enabled) 6790 return (SET_ERROR(EBUSY)); 6791 6792 if ((error = mod_remove(&modlinkage)) != 0) 6793 return (error); 6794 6795 zvol_fini(); 6796 zfs_fini(); 6797 spa_fini(); 6798 if (zfs_nfsshare_inited) 6799 (void) ddi_modclose(nfs_mod); 6800 if (zfs_smbshare_inited) 6801 (void) ddi_modclose(smbsrv_mod); 6802 if (zfs_nfsshare_inited || zfs_smbshare_inited) 6803 (void) ddi_modclose(sharefs_mod); 6804 6805 tsd_destroy(&zfs_fsyncer_key); 6806 ldi_ident_release(zfs_li); 6807 zfs_li = NULL; 6808 mutex_destroy(&zfs_share_lock); 6809 6810 return (error); 6811 } 6812 6813 int 6814 _info(struct modinfo *modinfop) 6815 { 6816 return (mod_info(&modlinkage, modinfop)); 6817 } 6818 #endif /* illumos */ 6819 6820 #ifdef __FreeBSD__ 6821 static struct cdevsw zfs_cdevsw = { 6822 .d_version = D_VERSION, 6823 .d_open = zfsdev_open, 6824 .d_ioctl = zfsdev_ioctl, 6825 .d_name = ZFS_DEV_NAME 6826 }; 6827 6828 static void 6829 zfsdev_init(void) 6830 { 6831 zfsdev = make_dev(&zfs_cdevsw, 0x0, UID_ROOT, GID_OPERATOR, 0666, 6832 ZFS_DEV_NAME); 6833 } 6834 6835 static void 6836 zfsdev_fini(void) 6837 { 6838 if (zfsdev != NULL) 6839 destroy_dev(zfsdev); 6840 } 6841 6842 static struct root_hold_token *zfs_root_token; 6843 struct proc *zfsproc; 6844 6845 static int zfs__init(void); 6846 static int zfs__fini(void); 6847 static void zfs_shutdown(void *, int); 6848 6849 static eventhandler_tag zfs_shutdown_event_tag; 6850 6851 #define ZFS_MIN_KSTACK_PAGES 4 6852 6853 int 6854 zfs__init(void) 6855 { 6856 6857 #if KSTACK_PAGES < ZFS_MIN_KSTACK_PAGES 6858 printf("ZFS NOTICE: KSTACK_PAGES is %d which could result in stack " 6859 "overflow panic!\nPlease consider adding " 6860 "'options KSTACK_PAGES=%d' to your kernel config\n", KSTACK_PAGES, 6861 ZFS_MIN_KSTACK_PAGES); 6862 #endif 6863 zfs_root_token = root_mount_hold("ZFS"); 6864 6865 mutex_init(&zfs_share_lock, NULL, MUTEX_DEFAULT, NULL); 6866 6867 spa_init(FREAD | FWRITE); 6868 zfs_init(); 6869 zvol_init(); 6870 zfs_ioctl_init(); 6871 6872 tsd_create(&zfs_fsyncer_key, NULL); 6873 tsd_create(&rrw_tsd_key, rrw_tsd_destroy); 6874 tsd_create(&zfs_allow_log_key, zfs_allow_log_destroy); 6875 tsd_create(&zfs_geom_probe_vdev_key, NULL); 6876 6877 printf("ZFS storage pool version: features support (" SPA_VERSION_STRING ")\n"); 6878 root_mount_rel(zfs_root_token); 6879 6880 zfsdev_init(); 6881 6882 return (0); 6883 } 6884 6885 int 6886 zfs__fini(void) 6887 { 6888 if (spa_busy() || zfs_busy() || zvol_busy() || 6889 zio_injection_enabled) { 6890 return (EBUSY); 6891 } 6892 6893 zfsdev_fini(); 6894 zvol_fini(); 6895 zfs_fini(); 6896 spa_fini(); 6897 6898 tsd_destroy(&zfs_fsyncer_key); 6899 tsd_destroy(&rrw_tsd_key); 6900 tsd_destroy(&zfs_allow_log_key); 6901 6902 mutex_destroy(&zfs_share_lock); 6903 6904 return (0); 6905 } 6906 6907 static void 6908 zfs_shutdown(void *arg __unused, int howto __unused) 6909 { 6910 6911 /* 6912 * ZFS fini routines can not properly work in a panic-ed system. 6913 */ 6914 if (panicstr == NULL) 6915 (void)zfs__fini(); 6916 } 6917 6918 6919 static int 6920 zfs_modevent(module_t mod, int type, void *unused __unused) 6921 { 6922 int err; 6923 6924 switch (type) { 6925 case MOD_LOAD: 6926 err = zfs__init(); 6927 if (err == 0) 6928 zfs_shutdown_event_tag = EVENTHANDLER_REGISTER( 6929 shutdown_post_sync, zfs_shutdown, NULL, 6930 SHUTDOWN_PRI_FIRST); 6931 return (err); 6932 case MOD_UNLOAD: 6933 err = zfs__fini(); 6934 if (err == 0 && zfs_shutdown_event_tag != NULL) 6935 EVENTHANDLER_DEREGISTER(shutdown_post_sync, 6936 zfs_shutdown_event_tag); 6937 return (err); 6938 case MOD_SHUTDOWN: 6939 return (0); 6940 default: 6941 break; 6942 } 6943 return (EOPNOTSUPP); 6944 } 6945 6946 static moduledata_t zfs_mod = { 6947 "zfsctrl", 6948 zfs_modevent, 6949 0 6950 }; 6951 DECLARE_MODULE(zfsctrl, zfs_mod, SI_SUB_VFS, SI_ORDER_ANY); 6952 MODULE_VERSION(zfsctrl, 1); 6953 MODULE_DEPEND(zfsctrl, opensolaris, 1, 1, 1); 6954 MODULE_DEPEND(zfsctrl, krpc, 1, 1, 1); 6955 MODULE_DEPEND(zfsctrl, acl_nfs4, 1, 1, 1); 6956 6957 #endif /* __FreeBSD__ */ 6958 6959 #ifdef __NetBSD__ 6960 6961 #include <sys/module.h> 6962 #include <uvm/uvm_extern.h> 6963 6964 MODULE(MODULE_CLASS_VFS, zfs, "solaris"); 6965 6966 static const struct fileops zfs_fileops; 6967 6968 static int 6969 nb_zfsdev_fioctl(struct file *fp, u_long cmd, void *argp) 6970 { 6971 dev_t dev = (dev_t)(uintptr_t)fp->f_data; 6972 int rval; 6973 6974 return zfsdev_ioctl(dev, cmd, (intptr_t)argp, fp->f_flag, 6975 kauth_cred_get(), &rval); 6976 } 6977 6978 static int 6979 nb_zfsdev_fclose(struct file *fp) 6980 { 6981 dev_t dev = (dev_t)(uintptr_t)fp->f_data; 6982 int error; 6983 6984 return zfsdev_close(dev, fp->f_flag, OTYPCHR, fp->f_cred); 6985 } 6986 6987 static int 6988 nb_zfsdev_copen(dev_t dev, int flag, int mode, lwp_t *l) 6989 { 6990 const bool must_clone = (getminor(dev) == 0 && (flag & FEXCL) != 0); 6991 struct file *fp; 6992 int error, fd; 6993 6994 if (must_clone) { 6995 error = fd_allocfile(&fp, &fd); 6996 if (error) 6997 return error; 6998 } 6999 7000 error = zfsdev_open(&dev, flag, OTYPCHR, kauth_cred_get()); 7001 7002 if (must_clone) { 7003 if (error) { 7004 fd_abort(curproc, fp, fd); 7005 return error; 7006 } 7007 return fd_clone(fp, fd, flag, &zfs_fileops, 7008 (void *)(uintptr_t)dev); 7009 } 7010 7011 return error; 7012 } 7013 7014 static int 7015 nb_zfsdev_cclose(dev_t dev, int flag, int mode, lwp_t *l) 7016 { 7017 7018 return zfsdev_close(dev, flag, OTYPCHR, kauth_cred_get()); 7019 } 7020 7021 static int 7022 nb_zfsdev_bopen(dev_t dev, int flag, int mode, lwp_t *l) 7023 { 7024 7025 return zfsdev_open(&dev, flag, OTYPBLK, kauth_cred_get()); 7026 } 7027 7028 static int 7029 nb_zfsdev_bclose(dev_t dev, int flag, int mode, lwp_t *l) 7030 { 7031 7032 return zfsdev_close(dev, flag, OTYPBLK, kauth_cred_get()); 7033 } 7034 7035 static int 7036 nb_zvol_read(dev_t dev, struct uio *uio, int flag) 7037 { 7038 7039 return zvol_read(dev, uio, kauth_cred_get()); 7040 } 7041 7042 static int 7043 nb_zvol_write(dev_t dev, struct uio *uio, int flag) 7044 { 7045 7046 return zvol_write(dev, uio, kauth_cred_get()); 7047 } 7048 7049 static int 7050 nb_zfsdev_ioctl(dev_t dev, u_long cmd, void *argp, int flag, lwp_t *l) 7051 { 7052 int rval; 7053 7054 return zfsdev_ioctl(dev, cmd, (intptr_t)argp, flag, kauth_cred_get(), 7055 &rval); 7056 } 7057 7058 static void 7059 nb_zvol_strategy(struct buf *bp) 7060 { 7061 7062 (void) zvol_strategy(bp); 7063 } 7064 7065 static int 7066 nb_zvol_psize(dev_t dev) 7067 { 7068 minor_t minor = getminor(dev); 7069 off_t nbytes; 7070 unsigned bytespersector; 7071 7072 if (minor == 0) /* /dev/zfs */ 7073 return -1; 7074 7075 if (zvol_ioctl(dev, DIOCGMEDIASIZE, (intptr_t)&nbytes, 0, 7076 NOCRED, NULL)) 7077 return -1; 7078 if (zvol_ioctl(dev, DIOCGSECTORSIZE, (intptr_t)&bytespersector, 0, 7079 NOCRED, NULL)) 7080 return -1; 7081 if (bytespersector == 0) /* paranoia */ 7082 return -1; 7083 if (nbytes/bytespersector > INT_MAX) /* paranoia */ 7084 return -1; 7085 return nbytes/bytespersector; 7086 } 7087 7088 static const struct fileops zfs_fileops = { 7089 .fo_name = "zfs", 7090 .fo_read = fbadop_read, 7091 .fo_write = fbadop_write, 7092 .fo_ioctl = nb_zfsdev_fioctl, 7093 .fo_fcntl = fnullop_fcntl, 7094 .fo_poll = fnullop_poll, 7095 .fo_stat = fbadop_stat, 7096 .fo_close = nb_zfsdev_fclose, 7097 .fo_kqfilter = fnullop_kqfilter, 7098 .fo_restart = fnullop_restart, 7099 }; 7100 7101 const struct bdevsw zfs_bdevsw = { 7102 .d_open = nb_zfsdev_bopen, 7103 .d_close = nb_zfsdev_bclose, 7104 .d_strategy = nb_zvol_strategy, 7105 .d_ioctl = nb_zfsdev_ioctl, 7106 .d_dump = nodump, 7107 .d_psize = nb_zvol_psize, 7108 .d_flag = D_DISK | D_MPSAFE 7109 }; 7110 7111 const struct cdevsw zfs_cdevsw = { 7112 .d_open = nb_zfsdev_copen, 7113 .d_close = nb_zfsdev_cclose, 7114 .d_read = nb_zvol_read, 7115 .d_write = nb_zvol_write, 7116 .d_ioctl = nb_zfsdev_ioctl, 7117 .d_stop = nostop, 7118 .d_tty = notty, 7119 .d_poll = nopoll, 7120 .d_mmap = nommap, 7121 .d_kqfilter = nokqfilter, 7122 .d_flag = D_DISK | D_MPSAFE 7123 }; 7124 7125 /* ZFS should only be used on systems with enough memory. */ 7126 #define ZFS_MIN_MEGS 512 7127 7128 static int zfs_version_ioctl = ZFS_IOCVER_CURRENT; 7129 static int zfs_version_spa = SPA_VERSION; 7130 static struct sysctllog *zfs_sysctl_log; 7131 7132 static void 7133 zfs_sysctl_init(void) 7134 { 7135 const struct sysctlnode *rnode; 7136 7137 sysctl_createv(&zfs_sysctl_log, 0, NULL, &rnode, 7138 CTLFLAG_PERMANENT, 7139 CTLTYPE_NODE, "zfs", 7140 SYSCTL_DESCR("zfs"), 7141 NULL, 0, NULL, 0, 7142 CTL_VFS, CTL_CREATE, CTL_EOL); 7143 7144 sysctl_createv(&zfs_sysctl_log, 0, &rnode, &rnode, 7145 CTLFLAG_PERMANENT, 7146 CTLTYPE_NODE, "version", 7147 SYSCTL_DESCR("version"), 7148 NULL, 0, NULL, 0, 7149 CTL_CREATE, CTL_EOL); 7150 7151 sysctl_createv(&zfs_sysctl_log, 0, &rnode, NULL, 7152 CTLFLAG_PERMANENT|CTLFLAG_READONLY, 7153 CTLTYPE_INT, "ioctl", 7154 SYSCTL_DESCR("ZFS ioctl version"), 7155 NULL, 0, &zfs_version_ioctl, 0, 7156 CTL_CREATE, CTL_EOL); 7157 7158 sysctl_createv(&zfs_sysctl_log, 0, &rnode, NULL, 7159 CTLFLAG_PERMANENT|CTLFLAG_READONLY, 7160 CTLTYPE_INT, "spa", 7161 SYSCTL_DESCR("ZFS SPA version"), 7162 NULL, 0, &zfs_version_spa, 0, 7163 CTL_CREATE, CTL_EOL); 7164 } 7165 7166 static void 7167 zfs_sysctl_fini(void) 7168 { 7169 7170 sysctl_teardown(&zfs_sysctl_log); 7171 } 7172 7173 7174 static void 7175 zfs_loadvnode_destroy(void *arg) 7176 { 7177 7178 if (arg != NULL) 7179 panic("thread exiting with TSD loadvnode data %p", arg); 7180 } 7181 7182 static int 7183 zfs_modcmd(modcmd_t cmd, void *arg) 7184 { 7185 int error; 7186 int active, inactive; 7187 uint64_t availrmem; 7188 7189 extern struct vfsops zfs_vfsops; 7190 extern uint_t zfs_putpage_key; 7191 7192 switch (cmd) { 7193 case MODULE_CMD_INIT: 7194 /* XXXNETBSD trim is not supported yet */ 7195 zfs_trim_enabled = B_FALSE; 7196 7197 availrmem = (uint64_t)physmem * PAGE_SIZE / 1048576; 7198 if (availrmem < ZFS_MIN_MEGS * 80 / 100) { 7199 printf("ERROR: at least %dMB of memory required to " 7200 "use ZFS\n", ZFS_MIN_MEGS); 7201 return ENOMEM; 7202 } 7203 mutex_init(&zfs_share_lock, NULL, MUTEX_DEFAULT, NULL); 7204 mutex_init(&zfs_debug_mtx, NULL, MUTEX_DEFAULT, NULL); 7205 7206 tsd_create(&zfs_fsyncer_key, NULL); 7207 tsd_create(&rrw_tsd_key, rrw_tsd_destroy); 7208 tsd_create(&zfs_allow_log_key, zfs_allow_log_destroy); 7209 tsd_create(&zfs_putpage_key, NULL); 7210 7211 spa_init(FREAD | FWRITE); 7212 zfs_init(); 7213 zvol_init(); 7214 zfs_ioctl_init(); 7215 zfs_sysctl_init(); 7216 7217 error = devsw_attach("zfs", &zfs_bdevsw, &zfs_dip->di_bmajor, 7218 &zfs_cdevsw, &zfs_dip->di_cmajor); 7219 if (error != 0) { 7220 goto attacherr; 7221 } 7222 (void) vfs_attach(&zfs_vfsops); 7223 return error; 7224 7225 case MODULE_CMD_FINI: 7226 if (spa_busy() || zfs_busy() || zvol_busy() || 7227 zio_injection_enabled) 7228 return EBUSY; 7229 7230 error = vfs_detach(&zfs_vfsops); 7231 if (error) 7232 return error; 7233 7234 devsw_detach(&zfs_bdevsw, &zfs_cdevsw); 7235 7236 attacherr: 7237 zfs_sysctl_fini(); 7238 zvol_fini(); 7239 zfs_fini(); 7240 spa_fini(); 7241 7242 tsd_destroy(&zfs_putpage_key); 7243 tsd_destroy(&zfs_fsyncer_key); 7244 tsd_destroy(&rrw_tsd_key); 7245 tsd_destroy(&zfs_allow_log_key); 7246 7247 mutex_destroy(&zfs_debug_mtx); 7248 mutex_destroy(&zfs_share_lock); 7249 7250 return error; 7251 7252 case MODULE_CMD_AUTOUNLOAD: 7253 /* 7254 * We don't want to be autounloaded because unlike 7255 * other subsystems, we read our own configuration 7256 * from disk and provide things that might be used 7257 * later (zvols). 7258 */ 7259 return EBUSY; 7260 7261 default: 7262 return ENOTTY; 7263 } 7264 } 7265 7266 #endif /* __NetBSD__ */ 7267