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 * Portions Copyright 2011 Martin Matuska 25 * Copyright 2011 Nexenta Systems, Inc. All rights reserved. 26 * Copyright (c) 2012, Joyent, Inc. All rights reserved. 27 * Copyright (c) 2013 by Delphix. All rights reserved. 28 * Copyright (c) 2013 by Saso Kiselkov. All rights reserved. 29 */ 30 31 /* 32 * ZFS ioctls. 33 * 34 * This file handles the ioctls to /dev/zfs, used for configuring ZFS storage 35 * pools and filesystems, e.g. with /sbin/zfs and /sbin/zpool. 36 * 37 * There are two ways that we handle ioctls: the legacy way where almost 38 * all of the logic is in the ioctl callback, and the new way where most 39 * of the marshalling is handled in the common entry point, zfsdev_ioctl(). 40 * 41 * Non-legacy ioctls should be registered by calling 42 * zfs_ioctl_register() from zfs_ioctl_init(). The ioctl is invoked 43 * from userland by lzc_ioctl(). 44 * 45 * The registration arguments are as follows: 46 * 47 * const char *name 48 * The name of the ioctl. This is used for history logging. If the 49 * ioctl returns successfully (the callback returns 0), and allow_log 50 * is true, then a history log entry will be recorded with the input & 51 * output nvlists. The log entry can be printed with "zpool history -i". 52 * 53 * zfs_ioc_t ioc 54 * The ioctl request number, which userland will pass to ioctl(2). 55 * The ioctl numbers can change from release to release, because 56 * the caller (libzfs) must be matched to the kernel. 57 * 58 * zfs_secpolicy_func_t *secpolicy 59 * This function will be called before the zfs_ioc_func_t, to 60 * determine if this operation is permitted. It should return EPERM 61 * on failure, and 0 on success. Checks include determining if the 62 * dataset is visible in this zone, and if the user has either all 63 * zfs privileges in the zone (SYS_MOUNT), or has been granted permission 64 * to do this operation on this dataset with "zfs allow". 65 * 66 * zfs_ioc_namecheck_t namecheck 67 * This specifies what to expect in the zfs_cmd_t:zc_name -- a pool 68 * name, a dataset name, or nothing. If the name is not well-formed, 69 * the ioctl will fail and the callback will not be called. 70 * Therefore, the callback can assume that the name is well-formed 71 * (e.g. is null-terminated, doesn't have more than one '@' character, 72 * doesn't have invalid characters). 73 * 74 * zfs_ioc_poolcheck_t pool_check 75 * This specifies requirements on the pool state. If the pool does 76 * not meet them (is suspended or is readonly), the ioctl will fail 77 * and the callback will not be called. If any checks are specified 78 * (i.e. it is not POOL_CHECK_NONE), namecheck must not be NO_NAME. 79 * Multiple checks can be or-ed together (e.g. POOL_CHECK_SUSPENDED | 80 * POOL_CHECK_READONLY). 81 * 82 * boolean_t smush_outnvlist 83 * If smush_outnvlist is true, then the output is presumed to be a 84 * list of errors, and it will be "smushed" down to fit into the 85 * caller's buffer, by removing some entries and replacing them with a 86 * single "N_MORE_ERRORS" entry indicating how many were removed. See 87 * nvlist_smush() for details. If smush_outnvlist is false, and the 88 * outnvlist does not fit into the userland-provided buffer, then the 89 * ioctl will fail with ENOMEM. 90 * 91 * zfs_ioc_func_t *func 92 * The callback function that will perform the operation. 93 * 94 * The callback should return 0 on success, or an error number on 95 * failure. If the function fails, the userland ioctl will return -1, 96 * and errno will be set to the callback's return value. The callback 97 * will be called with the following arguments: 98 * 99 * const char *name 100 * The name of the pool or dataset to operate on, from 101 * zfs_cmd_t:zc_name. The 'namecheck' argument specifies the 102 * expected type (pool, dataset, or none). 103 * 104 * nvlist_t *innvl 105 * The input nvlist, deserialized from zfs_cmd_t:zc_nvlist_src. Or 106 * NULL if no input nvlist was provided. Changes to this nvlist are 107 * ignored. If the input nvlist could not be deserialized, the 108 * ioctl will fail and the callback will not be called. 109 * 110 * nvlist_t *outnvl 111 * The output nvlist, initially empty. The callback can fill it in, 112 * and it will be returned to userland by serializing it into 113 * zfs_cmd_t:zc_nvlist_dst. If it is non-empty, and serialization 114 * fails (e.g. because the caller didn't supply a large enough 115 * buffer), then the overall ioctl will fail. See the 116 * 'smush_nvlist' argument above for additional behaviors. 117 * 118 * There are two typical uses of the output nvlist: 119 * - To return state, e.g. property values. In this case, 120 * smush_outnvlist should be false. If the buffer was not large 121 * enough, the caller will reallocate a larger buffer and try 122 * the ioctl again. 123 * 124 * - To return multiple errors from an ioctl which makes on-disk 125 * changes. In this case, smush_outnvlist should be true. 126 * Ioctls which make on-disk modifications should generally not 127 * use the outnvl if they succeed, because the caller can not 128 * distinguish between the operation failing, and 129 * deserialization failing. 130 */ 131 132 #include <sys/types.h> 133 #include <sys/param.h> 134 #include <sys/errno.h> 135 #include <sys/uio.h> 136 #include <sys/buf.h> 137 #include <sys/modctl.h> 138 #include <sys/open.h> 139 #include <sys/file.h> 140 #include <sys/kmem.h> 141 #include <sys/conf.h> 142 #include <sys/cmn_err.h> 143 #include <sys/stat.h> 144 #include <sys/zfs_ioctl.h> 145 #include <sys/zfs_vfsops.h> 146 #include <sys/zfs_znode.h> 147 #include <sys/zap.h> 148 #include <sys/spa.h> 149 #include <sys/spa_impl.h> 150 #include <sys/vdev.h> 151 #include <sys/priv_impl.h> 152 #include <sys/dmu.h> 153 #include <sys/dsl_dir.h> 154 #include <sys/dsl_dataset.h> 155 #include <sys/dsl_prop.h> 156 #include <sys/dsl_deleg.h> 157 #include <sys/dmu_objset.h> 158 #include <sys/dmu_impl.h> 159 #include <sys/dmu_tx.h> 160 #include <sys/ddi.h> 161 #include <sys/sunddi.h> 162 #include <sys/sunldi.h> 163 #include <sys/policy.h> 164 #include <sys/zone.h> 165 #include <sys/nvpair.h> 166 #include <sys/pathname.h> 167 #include <sys/mount.h> 168 #include <sys/sdt.h> 169 #include <sys/fs/zfs.h> 170 #include <sys/zfs_ctldir.h> 171 #include <sys/zfs_dir.h> 172 #include <sys/zfs_onexit.h> 173 #include <sys/zvol.h> 174 #include <sys/dsl_scan.h> 175 #include <sharefs/share.h> 176 #include <sys/dmu_objset.h> 177 #include <sys/dmu_send.h> 178 #include <sys/dsl_destroy.h> 179 #include <sys/dsl_userhold.h> 180 #include <sys/zfeature.h> 181 182 #include "zfs_namecheck.h" 183 #include "zfs_prop.h" 184 #include "zfs_deleg.h" 185 #include "zfs_comutil.h" 186 187 extern struct modlfs zfs_modlfs; 188 189 extern void zfs_init(void); 190 extern void zfs_fini(void); 191 192 ldi_ident_t zfs_li = NULL; 193 dev_info_t *zfs_dip; 194 195 uint_t zfs_fsyncer_key; 196 extern uint_t rrw_tsd_key; 197 static uint_t zfs_allow_log_key; 198 199 typedef int zfs_ioc_legacy_func_t(zfs_cmd_t *); 200 typedef int zfs_ioc_func_t(const char *, nvlist_t *, nvlist_t *); 201 typedef int zfs_secpolicy_func_t(zfs_cmd_t *, nvlist_t *, cred_t *); 202 203 typedef enum { 204 NO_NAME, 205 POOL_NAME, 206 DATASET_NAME 207 } zfs_ioc_namecheck_t; 208 209 typedef enum { 210 POOL_CHECK_NONE = 1 << 0, 211 POOL_CHECK_SUSPENDED = 1 << 1, 212 POOL_CHECK_READONLY = 1 << 2, 213 } zfs_ioc_poolcheck_t; 214 215 typedef struct zfs_ioc_vec { 216 zfs_ioc_legacy_func_t *zvec_legacy_func; 217 zfs_ioc_func_t *zvec_func; 218 zfs_secpolicy_func_t *zvec_secpolicy; 219 zfs_ioc_namecheck_t zvec_namecheck; 220 boolean_t zvec_allow_log; 221 zfs_ioc_poolcheck_t zvec_pool_check; 222 boolean_t zvec_smush_outnvlist; 223 const char *zvec_name; 224 } zfs_ioc_vec_t; 225 226 /* This array is indexed by zfs_userquota_prop_t */ 227 static const char *userquota_perms[] = { 228 ZFS_DELEG_PERM_USERUSED, 229 ZFS_DELEG_PERM_USERQUOTA, 230 ZFS_DELEG_PERM_GROUPUSED, 231 ZFS_DELEG_PERM_GROUPQUOTA, 232 }; 233 234 static int zfs_ioc_userspace_upgrade(zfs_cmd_t *zc); 235 static int zfs_check_settable(const char *name, nvpair_t *property, 236 cred_t *cr); 237 static int zfs_check_clearable(char *dataset, nvlist_t *props, 238 nvlist_t **errors); 239 static int zfs_fill_zplprops_root(uint64_t, nvlist_t *, nvlist_t *, 240 boolean_t *); 241 int zfs_set_prop_nvlist(const char *, zprop_source_t, nvlist_t *, nvlist_t *); 242 static int get_nvlist(uint64_t nvl, uint64_t size, int iflag, nvlist_t **nvp); 243 244 static int zfs_prop_activate_feature(spa_t *spa, zfeature_info_t *feature); 245 246 /* _NOTE(PRINTFLIKE(4)) - this is printf-like, but lint is too whiney */ 247 void 248 __dprintf(const char *file, const char *func, int line, const char *fmt, ...) 249 { 250 const char *newfile; 251 char buf[512]; 252 va_list adx; 253 254 /* 255 * Get rid of annoying "../common/" prefix to filename. 256 */ 257 newfile = strrchr(file, '/'); 258 if (newfile != NULL) { 259 newfile = newfile + 1; /* Get rid of leading / */ 260 } else { 261 newfile = file; 262 } 263 264 va_start(adx, fmt); 265 (void) vsnprintf(buf, sizeof (buf), fmt, adx); 266 va_end(adx); 267 268 /* 269 * To get this data, use the zfs-dprintf probe as so: 270 * dtrace -q -n 'zfs-dprintf \ 271 * /stringof(arg0) == "dbuf.c"/ \ 272 * {printf("%s: %s", stringof(arg1), stringof(arg3))}' 273 * arg0 = file name 274 * arg1 = function name 275 * arg2 = line number 276 * arg3 = message 277 */ 278 DTRACE_PROBE4(zfs__dprintf, 279 char *, newfile, char *, func, int, line, char *, buf); 280 } 281 282 static void 283 history_str_free(char *buf) 284 { 285 kmem_free(buf, HIS_MAX_RECORD_LEN); 286 } 287 288 static char * 289 history_str_get(zfs_cmd_t *zc) 290 { 291 char *buf; 292 293 if (zc->zc_history == NULL) 294 return (NULL); 295 296 buf = kmem_alloc(HIS_MAX_RECORD_LEN, KM_SLEEP); 297 if (copyinstr((void *)(uintptr_t)zc->zc_history, 298 buf, HIS_MAX_RECORD_LEN, NULL) != 0) { 299 history_str_free(buf); 300 return (NULL); 301 } 302 303 buf[HIS_MAX_RECORD_LEN -1] = '\0'; 304 305 return (buf); 306 } 307 308 /* 309 * Check to see if the named dataset is currently defined as bootable 310 */ 311 static boolean_t 312 zfs_is_bootfs(const char *name) 313 { 314 objset_t *os; 315 316 if (dmu_objset_hold(name, FTAG, &os) == 0) { 317 boolean_t ret; 318 ret = (dmu_objset_id(os) == spa_bootfs(dmu_objset_spa(os))); 319 dmu_objset_rele(os, FTAG); 320 return (ret); 321 } 322 return (B_FALSE); 323 } 324 325 /* 326 * Return non-zero if the spa version is less than requested version. 327 */ 328 static int 329 zfs_earlier_version(const char *name, int version) 330 { 331 spa_t *spa; 332 333 if (spa_open(name, &spa, FTAG) == 0) { 334 if (spa_version(spa) < version) { 335 spa_close(spa, FTAG); 336 return (1); 337 } 338 spa_close(spa, FTAG); 339 } 340 return (0); 341 } 342 343 /* 344 * Return TRUE if the ZPL version is less than requested version. 345 */ 346 static boolean_t 347 zpl_earlier_version(const char *name, int version) 348 { 349 objset_t *os; 350 boolean_t rc = B_TRUE; 351 352 if (dmu_objset_hold(name, FTAG, &os) == 0) { 353 uint64_t zplversion; 354 355 if (dmu_objset_type(os) != DMU_OST_ZFS) { 356 dmu_objset_rele(os, FTAG); 357 return (B_TRUE); 358 } 359 /* XXX reading from non-owned objset */ 360 if (zfs_get_zplprop(os, ZFS_PROP_VERSION, &zplversion) == 0) 361 rc = zplversion < version; 362 dmu_objset_rele(os, FTAG); 363 } 364 return (rc); 365 } 366 367 static void 368 zfs_log_history(zfs_cmd_t *zc) 369 { 370 spa_t *spa; 371 char *buf; 372 373 if ((buf = history_str_get(zc)) == NULL) 374 return; 375 376 if (spa_open(zc->zc_name, &spa, FTAG) == 0) { 377 if (spa_version(spa) >= SPA_VERSION_ZPOOL_HISTORY) 378 (void) spa_history_log(spa, buf); 379 spa_close(spa, FTAG); 380 } 381 history_str_free(buf); 382 } 383 384 /* 385 * Policy for top-level read operations (list pools). Requires no privileges, 386 * and can be used in the local zone, as there is no associated dataset. 387 */ 388 /* ARGSUSED */ 389 static int 390 zfs_secpolicy_none(zfs_cmd_t *zc, nvlist_t *innvl, cred_t *cr) 391 { 392 return (0); 393 } 394 395 /* 396 * Policy for dataset read operations (list children, get statistics). Requires 397 * no privileges, but must be visible in the local zone. 398 */ 399 /* ARGSUSED */ 400 static int 401 zfs_secpolicy_read(zfs_cmd_t *zc, nvlist_t *innvl, cred_t *cr) 402 { 403 if (INGLOBALZONE(curproc) || 404 zone_dataset_visible(zc->zc_name, NULL)) 405 return (0); 406 407 return (SET_ERROR(ENOENT)); 408 } 409 410 static int 411 zfs_dozonecheck_impl(const char *dataset, uint64_t zoned, cred_t *cr) 412 { 413 int writable = 1; 414 415 /* 416 * The dataset must be visible by this zone -- check this first 417 * so they don't see EPERM on something they shouldn't know about. 418 */ 419 if (!INGLOBALZONE(curproc) && 420 !zone_dataset_visible(dataset, &writable)) 421 return (SET_ERROR(ENOENT)); 422 423 if (INGLOBALZONE(curproc)) { 424 /* 425 * If the fs is zoned, only root can access it from the 426 * global zone. 427 */ 428 if (secpolicy_zfs(cr) && zoned) 429 return (SET_ERROR(EPERM)); 430 } else { 431 /* 432 * If we are in a local zone, the 'zoned' property must be set. 433 */ 434 if (!zoned) 435 return (SET_ERROR(EPERM)); 436 437 /* must be writable by this zone */ 438 if (!writable) 439 return (SET_ERROR(EPERM)); 440 } 441 return (0); 442 } 443 444 static int 445 zfs_dozonecheck(const char *dataset, cred_t *cr) 446 { 447 uint64_t zoned; 448 449 if (dsl_prop_get_integer(dataset, "zoned", &zoned, NULL)) 450 return (SET_ERROR(ENOENT)); 451 452 return (zfs_dozonecheck_impl(dataset, zoned, cr)); 453 } 454 455 static int 456 zfs_dozonecheck_ds(const char *dataset, dsl_dataset_t *ds, cred_t *cr) 457 { 458 uint64_t zoned; 459 460 if (dsl_prop_get_int_ds(ds, "zoned", &zoned)) 461 return (SET_ERROR(ENOENT)); 462 463 return (zfs_dozonecheck_impl(dataset, zoned, cr)); 464 } 465 466 static int 467 zfs_secpolicy_write_perms_ds(const char *name, dsl_dataset_t *ds, 468 const char *perm, cred_t *cr) 469 { 470 int error; 471 472 error = zfs_dozonecheck_ds(name, ds, cr); 473 if (error == 0) { 474 error = secpolicy_zfs(cr); 475 if (error != 0) 476 error = dsl_deleg_access_impl(ds, perm, cr); 477 } 478 return (error); 479 } 480 481 static int 482 zfs_secpolicy_write_perms(const char *name, const char *perm, cred_t *cr) 483 { 484 int error; 485 dsl_dataset_t *ds; 486 dsl_pool_t *dp; 487 488 error = dsl_pool_hold(name, FTAG, &dp); 489 if (error != 0) 490 return (error); 491 492 error = dsl_dataset_hold(dp, name, FTAG, &ds); 493 if (error != 0) { 494 dsl_pool_rele(dp, FTAG); 495 return (error); 496 } 497 498 error = zfs_secpolicy_write_perms_ds(name, ds, perm, cr); 499 500 dsl_dataset_rele(ds, FTAG); 501 dsl_pool_rele(dp, FTAG); 502 return (error); 503 } 504 505 /* 506 * Policy for setting the security label property. 507 * 508 * Returns 0 for success, non-zero for access and other errors. 509 */ 510 static int 511 zfs_set_slabel_policy(const char *name, char *strval, cred_t *cr) 512 { 513 char ds_hexsl[MAXNAMELEN]; 514 bslabel_t ds_sl, new_sl; 515 boolean_t new_default = FALSE; 516 uint64_t zoned; 517 int needed_priv = -1; 518 int error; 519 520 /* First get the existing dataset label. */ 521 error = dsl_prop_get(name, zfs_prop_to_name(ZFS_PROP_MLSLABEL), 522 1, sizeof (ds_hexsl), &ds_hexsl, NULL); 523 if (error != 0) 524 return (SET_ERROR(EPERM)); 525 526 if (strcasecmp(strval, ZFS_MLSLABEL_DEFAULT) == 0) 527 new_default = TRUE; 528 529 /* The label must be translatable */ 530 if (!new_default && (hexstr_to_label(strval, &new_sl) != 0)) 531 return (SET_ERROR(EINVAL)); 532 533 /* 534 * In a non-global zone, disallow attempts to set a label that 535 * doesn't match that of the zone; otherwise no other checks 536 * are needed. 537 */ 538 if (!INGLOBALZONE(curproc)) { 539 if (new_default || !blequal(&new_sl, CR_SL(CRED()))) 540 return (SET_ERROR(EPERM)); 541 return (0); 542 } 543 544 /* 545 * For global-zone datasets (i.e., those whose zoned property is 546 * "off", verify that the specified new label is valid for the 547 * global zone. 548 */ 549 if (dsl_prop_get_integer(name, 550 zfs_prop_to_name(ZFS_PROP_ZONED), &zoned, NULL)) 551 return (SET_ERROR(EPERM)); 552 if (!zoned) { 553 if (zfs_check_global_label(name, strval) != 0) 554 return (SET_ERROR(EPERM)); 555 } 556 557 /* 558 * If the existing dataset label is nondefault, check if the 559 * dataset is mounted (label cannot be changed while mounted). 560 * Get the zfsvfs; if there isn't one, then the dataset isn't 561 * mounted (or isn't a dataset, doesn't exist, ...). 562 */ 563 if (strcasecmp(ds_hexsl, ZFS_MLSLABEL_DEFAULT) != 0) { 564 objset_t *os; 565 static char *setsl_tag = "setsl_tag"; 566 567 /* 568 * Try to own the dataset; abort if there is any error, 569 * (e.g., already mounted, in use, or other error). 570 */ 571 error = dmu_objset_own(name, DMU_OST_ZFS, B_TRUE, 572 setsl_tag, &os); 573 if (error != 0) 574 return (SET_ERROR(EPERM)); 575 576 dmu_objset_disown(os, setsl_tag); 577 578 if (new_default) { 579 needed_priv = PRIV_FILE_DOWNGRADE_SL; 580 goto out_check; 581 } 582 583 if (hexstr_to_label(strval, &new_sl) != 0) 584 return (SET_ERROR(EPERM)); 585 586 if (blstrictdom(&ds_sl, &new_sl)) 587 needed_priv = PRIV_FILE_DOWNGRADE_SL; 588 else if (blstrictdom(&new_sl, &ds_sl)) 589 needed_priv = PRIV_FILE_UPGRADE_SL; 590 } else { 591 /* dataset currently has a default label */ 592 if (!new_default) 593 needed_priv = PRIV_FILE_UPGRADE_SL; 594 } 595 596 out_check: 597 if (needed_priv != -1) 598 return (PRIV_POLICY(cr, needed_priv, B_FALSE, EPERM, NULL)); 599 return (0); 600 } 601 602 static int 603 zfs_secpolicy_setprop(const char *dsname, zfs_prop_t prop, nvpair_t *propval, 604 cred_t *cr) 605 { 606 char *strval; 607 608 /* 609 * Check permissions for special properties. 610 */ 611 switch (prop) { 612 case ZFS_PROP_ZONED: 613 /* 614 * Disallow setting of 'zoned' from within a local zone. 615 */ 616 if (!INGLOBALZONE(curproc)) 617 return (SET_ERROR(EPERM)); 618 break; 619 620 case ZFS_PROP_QUOTA: 621 if (!INGLOBALZONE(curproc)) { 622 uint64_t zoned; 623 char setpoint[MAXNAMELEN]; 624 /* 625 * Unprivileged users are allowed to modify the 626 * quota on things *under* (ie. contained by) 627 * the thing they own. 628 */ 629 if (dsl_prop_get_integer(dsname, "zoned", &zoned, 630 setpoint)) 631 return (SET_ERROR(EPERM)); 632 if (!zoned || strlen(dsname) <= strlen(setpoint)) 633 return (SET_ERROR(EPERM)); 634 } 635 break; 636 637 case ZFS_PROP_MLSLABEL: 638 if (!is_system_labeled()) 639 return (SET_ERROR(EPERM)); 640 641 if (nvpair_value_string(propval, &strval) == 0) { 642 int err; 643 644 err = zfs_set_slabel_policy(dsname, strval, CRED()); 645 if (err != 0) 646 return (err); 647 } 648 break; 649 } 650 651 return (zfs_secpolicy_write_perms(dsname, zfs_prop_to_name(prop), cr)); 652 } 653 654 /* ARGSUSED */ 655 static int 656 zfs_secpolicy_set_fsacl(zfs_cmd_t *zc, nvlist_t *innvl, cred_t *cr) 657 { 658 int error; 659 660 error = zfs_dozonecheck(zc->zc_name, cr); 661 if (error != 0) 662 return (error); 663 664 /* 665 * permission to set permissions will be evaluated later in 666 * dsl_deleg_can_allow() 667 */ 668 return (0); 669 } 670 671 /* ARGSUSED */ 672 static int 673 zfs_secpolicy_rollback(zfs_cmd_t *zc, nvlist_t *innvl, cred_t *cr) 674 { 675 return (zfs_secpolicy_write_perms(zc->zc_name, 676 ZFS_DELEG_PERM_ROLLBACK, cr)); 677 } 678 679 /* ARGSUSED */ 680 static int 681 zfs_secpolicy_send(zfs_cmd_t *zc, nvlist_t *innvl, cred_t *cr) 682 { 683 dsl_pool_t *dp; 684 dsl_dataset_t *ds; 685 char *cp; 686 int error; 687 688 /* 689 * Generate the current snapshot name from the given objsetid, then 690 * use that name for the secpolicy/zone checks. 691 */ 692 cp = strchr(zc->zc_name, '@'); 693 if (cp == NULL) 694 return (SET_ERROR(EINVAL)); 695 error = dsl_pool_hold(zc->zc_name, FTAG, &dp); 696 if (error != 0) 697 return (error); 698 699 error = dsl_dataset_hold_obj(dp, zc->zc_sendobj, FTAG, &ds); 700 if (error != 0) { 701 dsl_pool_rele(dp, FTAG); 702 return (error); 703 } 704 705 dsl_dataset_name(ds, zc->zc_name); 706 707 error = zfs_secpolicy_write_perms_ds(zc->zc_name, ds, 708 ZFS_DELEG_PERM_SEND, cr); 709 dsl_dataset_rele(ds, FTAG); 710 dsl_pool_rele(dp, FTAG); 711 712 return (error); 713 } 714 715 /* ARGSUSED */ 716 static int 717 zfs_secpolicy_send_new(zfs_cmd_t *zc, nvlist_t *innvl, cred_t *cr) 718 { 719 return (zfs_secpolicy_write_perms(zc->zc_name, 720 ZFS_DELEG_PERM_SEND, cr)); 721 } 722 723 /* ARGSUSED */ 724 static int 725 zfs_secpolicy_deleg_share(zfs_cmd_t *zc, nvlist_t *innvl, cred_t *cr) 726 { 727 vnode_t *vp; 728 int error; 729 730 if ((error = lookupname(zc->zc_value, UIO_SYSSPACE, 731 NO_FOLLOW, NULL, &vp)) != 0) 732 return (error); 733 734 /* Now make sure mntpnt and dataset are ZFS */ 735 736 if (vp->v_vfsp->vfs_fstype != zfsfstype || 737 (strcmp((char *)refstr_value(vp->v_vfsp->vfs_resource), 738 zc->zc_name) != 0)) { 739 VN_RELE(vp); 740 return (SET_ERROR(EPERM)); 741 } 742 743 VN_RELE(vp); 744 return (dsl_deleg_access(zc->zc_name, 745 ZFS_DELEG_PERM_SHARE, cr)); 746 } 747 748 int 749 zfs_secpolicy_share(zfs_cmd_t *zc, nvlist_t *innvl, cred_t *cr) 750 { 751 if (!INGLOBALZONE(curproc)) 752 return (SET_ERROR(EPERM)); 753 754 if (secpolicy_nfs(cr) == 0) { 755 return (0); 756 } else { 757 return (zfs_secpolicy_deleg_share(zc, innvl, cr)); 758 } 759 } 760 761 int 762 zfs_secpolicy_smb_acl(zfs_cmd_t *zc, nvlist_t *innvl, cred_t *cr) 763 { 764 if (!INGLOBALZONE(curproc)) 765 return (SET_ERROR(EPERM)); 766 767 if (secpolicy_smb(cr) == 0) { 768 return (0); 769 } else { 770 return (zfs_secpolicy_deleg_share(zc, innvl, cr)); 771 } 772 } 773 774 static int 775 zfs_get_parent(const char *datasetname, char *parent, int parentsize) 776 { 777 char *cp; 778 779 /* 780 * Remove the @bla or /bla from the end of the name to get the parent. 781 */ 782 (void) strncpy(parent, datasetname, parentsize); 783 cp = strrchr(parent, '@'); 784 if (cp != NULL) { 785 cp[0] = '\0'; 786 } else { 787 cp = strrchr(parent, '/'); 788 if (cp == NULL) 789 return (SET_ERROR(ENOENT)); 790 cp[0] = '\0'; 791 } 792 793 return (0); 794 } 795 796 int 797 zfs_secpolicy_destroy_perms(const char *name, cred_t *cr) 798 { 799 int error; 800 801 if ((error = zfs_secpolicy_write_perms(name, 802 ZFS_DELEG_PERM_MOUNT, cr)) != 0) 803 return (error); 804 805 return (zfs_secpolicy_write_perms(name, ZFS_DELEG_PERM_DESTROY, cr)); 806 } 807 808 /* ARGSUSED */ 809 static int 810 zfs_secpolicy_destroy(zfs_cmd_t *zc, nvlist_t *innvl, cred_t *cr) 811 { 812 return (zfs_secpolicy_destroy_perms(zc->zc_name, cr)); 813 } 814 815 /* 816 * Destroying snapshots with delegated permissions requires 817 * descendant mount and destroy permissions. 818 */ 819 /* ARGSUSED */ 820 static int 821 zfs_secpolicy_destroy_snaps(zfs_cmd_t *zc, nvlist_t *innvl, cred_t *cr) 822 { 823 nvlist_t *snaps; 824 nvpair_t *pair, *nextpair; 825 int error = 0; 826 827 if (nvlist_lookup_nvlist(innvl, "snaps", &snaps) != 0) 828 return (SET_ERROR(EINVAL)); 829 for (pair = nvlist_next_nvpair(snaps, NULL); pair != NULL; 830 pair = nextpair) { 831 dsl_pool_t *dp; 832 dsl_dataset_t *ds; 833 834 error = dsl_pool_hold(nvpair_name(pair), FTAG, &dp); 835 if (error != 0) 836 break; 837 nextpair = nvlist_next_nvpair(snaps, pair); 838 error = dsl_dataset_hold(dp, nvpair_name(pair), FTAG, &ds); 839 if (error == 0) 840 dsl_dataset_rele(ds, FTAG); 841 dsl_pool_rele(dp, FTAG); 842 843 if (error == 0) { 844 error = zfs_secpolicy_destroy_perms(nvpair_name(pair), 845 cr); 846 } else if (error == ENOENT) { 847 /* 848 * Ignore any snapshots that don't exist (we consider 849 * them "already destroyed"). Remove the name from the 850 * nvl here in case the snapshot is created between 851 * now and when we try to destroy it (in which case 852 * we don't want to destroy it since we haven't 853 * checked for permission). 854 */ 855 fnvlist_remove_nvpair(snaps, pair); 856 error = 0; 857 } 858 if (error != 0) 859 break; 860 } 861 862 return (error); 863 } 864 865 int 866 zfs_secpolicy_rename_perms(const char *from, const char *to, cred_t *cr) 867 { 868 char parentname[MAXNAMELEN]; 869 int error; 870 871 if ((error = zfs_secpolicy_write_perms(from, 872 ZFS_DELEG_PERM_RENAME, cr)) != 0) 873 return (error); 874 875 if ((error = zfs_secpolicy_write_perms(from, 876 ZFS_DELEG_PERM_MOUNT, cr)) != 0) 877 return (error); 878 879 if ((error = zfs_get_parent(to, parentname, 880 sizeof (parentname))) != 0) 881 return (error); 882 883 if ((error = zfs_secpolicy_write_perms(parentname, 884 ZFS_DELEG_PERM_CREATE, cr)) != 0) 885 return (error); 886 887 if ((error = zfs_secpolicy_write_perms(parentname, 888 ZFS_DELEG_PERM_MOUNT, cr)) != 0) 889 return (error); 890 891 return (error); 892 } 893 894 /* ARGSUSED */ 895 static int 896 zfs_secpolicy_rename(zfs_cmd_t *zc, nvlist_t *innvl, cred_t *cr) 897 { 898 return (zfs_secpolicy_rename_perms(zc->zc_name, zc->zc_value, cr)); 899 } 900 901 /* ARGSUSED */ 902 static int 903 zfs_secpolicy_promote(zfs_cmd_t *zc, nvlist_t *innvl, cred_t *cr) 904 { 905 dsl_pool_t *dp; 906 dsl_dataset_t *clone; 907 int error; 908 909 error = zfs_secpolicy_write_perms(zc->zc_name, 910 ZFS_DELEG_PERM_PROMOTE, cr); 911 if (error != 0) 912 return (error); 913 914 error = dsl_pool_hold(zc->zc_name, FTAG, &dp); 915 if (error != 0) 916 return (error); 917 918 error = dsl_dataset_hold(dp, zc->zc_name, FTAG, &clone); 919 920 if (error == 0) { 921 char parentname[MAXNAMELEN]; 922 dsl_dataset_t *origin = NULL; 923 dsl_dir_t *dd; 924 dd = clone->ds_dir; 925 926 error = dsl_dataset_hold_obj(dd->dd_pool, 927 dd->dd_phys->dd_origin_obj, FTAG, &origin); 928 if (error != 0) { 929 dsl_dataset_rele(clone, FTAG); 930 dsl_pool_rele(dp, FTAG); 931 return (error); 932 } 933 934 error = zfs_secpolicy_write_perms_ds(zc->zc_name, clone, 935 ZFS_DELEG_PERM_MOUNT, cr); 936 937 dsl_dataset_name(origin, parentname); 938 if (error == 0) { 939 error = zfs_secpolicy_write_perms_ds(parentname, origin, 940 ZFS_DELEG_PERM_PROMOTE, cr); 941 } 942 dsl_dataset_rele(clone, FTAG); 943 dsl_dataset_rele(origin, FTAG); 944 } 945 dsl_pool_rele(dp, FTAG); 946 return (error); 947 } 948 949 /* ARGSUSED */ 950 static int 951 zfs_secpolicy_recv(zfs_cmd_t *zc, nvlist_t *innvl, cred_t *cr) 952 { 953 int error; 954 955 if ((error = zfs_secpolicy_write_perms(zc->zc_name, 956 ZFS_DELEG_PERM_RECEIVE, cr)) != 0) 957 return (error); 958 959 if ((error = zfs_secpolicy_write_perms(zc->zc_name, 960 ZFS_DELEG_PERM_MOUNT, cr)) != 0) 961 return (error); 962 963 return (zfs_secpolicy_write_perms(zc->zc_name, 964 ZFS_DELEG_PERM_CREATE, cr)); 965 } 966 967 int 968 zfs_secpolicy_snapshot_perms(const char *name, cred_t *cr) 969 { 970 return (zfs_secpolicy_write_perms(name, 971 ZFS_DELEG_PERM_SNAPSHOT, cr)); 972 } 973 974 /* 975 * Check for permission to create each snapshot in the nvlist. 976 */ 977 /* ARGSUSED */ 978 static int 979 zfs_secpolicy_snapshot(zfs_cmd_t *zc, nvlist_t *innvl, cred_t *cr) 980 { 981 nvlist_t *snaps; 982 int error = 0; 983 nvpair_t *pair; 984 985 if (nvlist_lookup_nvlist(innvl, "snaps", &snaps) != 0) 986 return (SET_ERROR(EINVAL)); 987 for (pair = nvlist_next_nvpair(snaps, NULL); pair != NULL; 988 pair = nvlist_next_nvpair(snaps, pair)) { 989 char *name = nvpair_name(pair); 990 char *atp = strchr(name, '@'); 991 992 if (atp == NULL) { 993 error = SET_ERROR(EINVAL); 994 break; 995 } 996 *atp = '\0'; 997 error = zfs_secpolicy_snapshot_perms(name, cr); 998 *atp = '@'; 999 if (error != 0) 1000 break; 1001 } 1002 return (error); 1003 } 1004 1005 /* ARGSUSED */ 1006 static int 1007 zfs_secpolicy_log_history(zfs_cmd_t *zc, nvlist_t *innvl, cred_t *cr) 1008 { 1009 /* 1010 * Even root must have a proper TSD so that we know what pool 1011 * to log to. 1012 */ 1013 if (tsd_get(zfs_allow_log_key) == NULL) 1014 return (SET_ERROR(EPERM)); 1015 return (0); 1016 } 1017 1018 static int 1019 zfs_secpolicy_create_clone(zfs_cmd_t *zc, nvlist_t *innvl, cred_t *cr) 1020 { 1021 char parentname[MAXNAMELEN]; 1022 int error; 1023 char *origin; 1024 1025 if ((error = zfs_get_parent(zc->zc_name, parentname, 1026 sizeof (parentname))) != 0) 1027 return (error); 1028 1029 if (nvlist_lookup_string(innvl, "origin", &origin) == 0 && 1030 (error = zfs_secpolicy_write_perms(origin, 1031 ZFS_DELEG_PERM_CLONE, cr)) != 0) 1032 return (error); 1033 1034 if ((error = zfs_secpolicy_write_perms(parentname, 1035 ZFS_DELEG_PERM_CREATE, cr)) != 0) 1036 return (error); 1037 1038 return (zfs_secpolicy_write_perms(parentname, 1039 ZFS_DELEG_PERM_MOUNT, cr)); 1040 } 1041 1042 /* 1043 * Policy for pool operations - create/destroy pools, add vdevs, etc. Requires 1044 * SYS_CONFIG privilege, which is not available in a local zone. 1045 */ 1046 /* ARGSUSED */ 1047 static int 1048 zfs_secpolicy_config(zfs_cmd_t *zc, nvlist_t *innvl, cred_t *cr) 1049 { 1050 if (secpolicy_sys_config(cr, B_FALSE) != 0) 1051 return (SET_ERROR(EPERM)); 1052 1053 return (0); 1054 } 1055 1056 /* 1057 * Policy for object to name lookups. 1058 */ 1059 /* ARGSUSED */ 1060 static int 1061 zfs_secpolicy_diff(zfs_cmd_t *zc, nvlist_t *innvl, cred_t *cr) 1062 { 1063 int error; 1064 1065 if ((error = secpolicy_sys_config(cr, B_FALSE)) == 0) 1066 return (0); 1067 1068 error = zfs_secpolicy_write_perms(zc->zc_name, ZFS_DELEG_PERM_DIFF, cr); 1069 return (error); 1070 } 1071 1072 /* 1073 * Policy for fault injection. Requires all privileges. 1074 */ 1075 /* ARGSUSED */ 1076 static int 1077 zfs_secpolicy_inject(zfs_cmd_t *zc, nvlist_t *innvl, cred_t *cr) 1078 { 1079 return (secpolicy_zinject(cr)); 1080 } 1081 1082 /* ARGSUSED */ 1083 static int 1084 zfs_secpolicy_inherit_prop(zfs_cmd_t *zc, nvlist_t *innvl, cred_t *cr) 1085 { 1086 zfs_prop_t prop = zfs_name_to_prop(zc->zc_value); 1087 1088 if (prop == ZPROP_INVAL) { 1089 if (!zfs_prop_user(zc->zc_value)) 1090 return (SET_ERROR(EINVAL)); 1091 return (zfs_secpolicy_write_perms(zc->zc_name, 1092 ZFS_DELEG_PERM_USERPROP, cr)); 1093 } else { 1094 return (zfs_secpolicy_setprop(zc->zc_name, prop, 1095 NULL, cr)); 1096 } 1097 } 1098 1099 static int 1100 zfs_secpolicy_userspace_one(zfs_cmd_t *zc, nvlist_t *innvl, cred_t *cr) 1101 { 1102 int err = zfs_secpolicy_read(zc, innvl, cr); 1103 if (err) 1104 return (err); 1105 1106 if (zc->zc_objset_type >= ZFS_NUM_USERQUOTA_PROPS) 1107 return (SET_ERROR(EINVAL)); 1108 1109 if (zc->zc_value[0] == 0) { 1110 /* 1111 * They are asking about a posix uid/gid. If it's 1112 * themself, allow it. 1113 */ 1114 if (zc->zc_objset_type == ZFS_PROP_USERUSED || 1115 zc->zc_objset_type == ZFS_PROP_USERQUOTA) { 1116 if (zc->zc_guid == crgetuid(cr)) 1117 return (0); 1118 } else { 1119 if (groupmember(zc->zc_guid, cr)) 1120 return (0); 1121 } 1122 } 1123 1124 return (zfs_secpolicy_write_perms(zc->zc_name, 1125 userquota_perms[zc->zc_objset_type], cr)); 1126 } 1127 1128 static int 1129 zfs_secpolicy_userspace_many(zfs_cmd_t *zc, nvlist_t *innvl, cred_t *cr) 1130 { 1131 int err = zfs_secpolicy_read(zc, innvl, cr); 1132 if (err) 1133 return (err); 1134 1135 if (zc->zc_objset_type >= ZFS_NUM_USERQUOTA_PROPS) 1136 return (SET_ERROR(EINVAL)); 1137 1138 return (zfs_secpolicy_write_perms(zc->zc_name, 1139 userquota_perms[zc->zc_objset_type], cr)); 1140 } 1141 1142 /* ARGSUSED */ 1143 static int 1144 zfs_secpolicy_userspace_upgrade(zfs_cmd_t *zc, nvlist_t *innvl, cred_t *cr) 1145 { 1146 return (zfs_secpolicy_setprop(zc->zc_name, ZFS_PROP_VERSION, 1147 NULL, cr)); 1148 } 1149 1150 /* ARGSUSED */ 1151 static int 1152 zfs_secpolicy_hold(zfs_cmd_t *zc, nvlist_t *innvl, cred_t *cr) 1153 { 1154 nvpair_t *pair; 1155 nvlist_t *holds; 1156 int error; 1157 1158 error = nvlist_lookup_nvlist(innvl, "holds", &holds); 1159 if (error != 0) 1160 return (SET_ERROR(EINVAL)); 1161 1162 for (pair = nvlist_next_nvpair(holds, NULL); pair != NULL; 1163 pair = nvlist_next_nvpair(holds, pair)) { 1164 char fsname[MAXNAMELEN]; 1165 error = dmu_fsname(nvpair_name(pair), fsname); 1166 if (error != 0) 1167 return (error); 1168 error = zfs_secpolicy_write_perms(fsname, 1169 ZFS_DELEG_PERM_HOLD, cr); 1170 if (error != 0) 1171 return (error); 1172 } 1173 return (0); 1174 } 1175 1176 /* ARGSUSED */ 1177 static int 1178 zfs_secpolicy_release(zfs_cmd_t *zc, nvlist_t *innvl, cred_t *cr) 1179 { 1180 nvpair_t *pair; 1181 int error; 1182 1183 for (pair = nvlist_next_nvpair(innvl, NULL); pair != NULL; 1184 pair = nvlist_next_nvpair(innvl, pair)) { 1185 char fsname[MAXNAMELEN]; 1186 error = dmu_fsname(nvpair_name(pair), fsname); 1187 if (error != 0) 1188 return (error); 1189 error = zfs_secpolicy_write_perms(fsname, 1190 ZFS_DELEG_PERM_RELEASE, cr); 1191 if (error != 0) 1192 return (error); 1193 } 1194 return (0); 1195 } 1196 1197 /* 1198 * Policy for allowing temporary snapshots to be taken or released 1199 */ 1200 static int 1201 zfs_secpolicy_tmp_snapshot(zfs_cmd_t *zc, nvlist_t *innvl, cred_t *cr) 1202 { 1203 /* 1204 * A temporary snapshot is the same as a snapshot, 1205 * hold, destroy and release all rolled into one. 1206 * Delegated diff alone is sufficient that we allow this. 1207 */ 1208 int error; 1209 1210 if ((error = zfs_secpolicy_write_perms(zc->zc_name, 1211 ZFS_DELEG_PERM_DIFF, cr)) == 0) 1212 return (0); 1213 1214 error = zfs_secpolicy_snapshot_perms(zc->zc_name, cr); 1215 if (error == 0) 1216 error = zfs_secpolicy_hold(zc, innvl, cr); 1217 if (error == 0) 1218 error = zfs_secpolicy_release(zc, innvl, cr); 1219 if (error == 0) 1220 error = zfs_secpolicy_destroy(zc, innvl, cr); 1221 return (error); 1222 } 1223 1224 /* 1225 * Returns the nvlist as specified by the user in the zfs_cmd_t. 1226 */ 1227 static int 1228 get_nvlist(uint64_t nvl, uint64_t size, int iflag, nvlist_t **nvp) 1229 { 1230 char *packed; 1231 int error; 1232 nvlist_t *list = NULL; 1233 1234 /* 1235 * Read in and unpack the user-supplied nvlist. 1236 */ 1237 if (size == 0) 1238 return (SET_ERROR(EINVAL)); 1239 1240 packed = kmem_alloc(size, KM_SLEEP); 1241 1242 if ((error = ddi_copyin((void *)(uintptr_t)nvl, packed, size, 1243 iflag)) != 0) { 1244 kmem_free(packed, size); 1245 return (error); 1246 } 1247 1248 if ((error = nvlist_unpack(packed, size, &list, 0)) != 0) { 1249 kmem_free(packed, size); 1250 return (error); 1251 } 1252 1253 kmem_free(packed, size); 1254 1255 *nvp = list; 1256 return (0); 1257 } 1258 1259 /* 1260 * Reduce the size of this nvlist until it can be serialized in 'max' bytes. 1261 * Entries will be removed from the end of the nvlist, and one int32 entry 1262 * named "N_MORE_ERRORS" will be added indicating how many entries were 1263 * removed. 1264 */ 1265 static int 1266 nvlist_smush(nvlist_t *errors, size_t max) 1267 { 1268 size_t size; 1269 1270 size = fnvlist_size(errors); 1271 1272 if (size > max) { 1273 nvpair_t *more_errors; 1274 int n = 0; 1275 1276 if (max < 1024) 1277 return (SET_ERROR(ENOMEM)); 1278 1279 fnvlist_add_int32(errors, ZPROP_N_MORE_ERRORS, 0); 1280 more_errors = nvlist_prev_nvpair(errors, NULL); 1281 1282 do { 1283 nvpair_t *pair = nvlist_prev_nvpair(errors, 1284 more_errors); 1285 fnvlist_remove_nvpair(errors, pair); 1286 n++; 1287 size = fnvlist_size(errors); 1288 } while (size > max); 1289 1290 fnvlist_remove_nvpair(errors, more_errors); 1291 fnvlist_add_int32(errors, ZPROP_N_MORE_ERRORS, n); 1292 ASSERT3U(fnvlist_size(errors), <=, max); 1293 } 1294 1295 return (0); 1296 } 1297 1298 static int 1299 put_nvlist(zfs_cmd_t *zc, nvlist_t *nvl) 1300 { 1301 char *packed = NULL; 1302 int error = 0; 1303 size_t size; 1304 1305 size = fnvlist_size(nvl); 1306 1307 if (size > zc->zc_nvlist_dst_size) { 1308 error = SET_ERROR(ENOMEM); 1309 } else { 1310 packed = fnvlist_pack(nvl, &size); 1311 if (ddi_copyout(packed, (void *)(uintptr_t)zc->zc_nvlist_dst, 1312 size, zc->zc_iflags) != 0) 1313 error = SET_ERROR(EFAULT); 1314 fnvlist_pack_free(packed, size); 1315 } 1316 1317 zc->zc_nvlist_dst_size = size; 1318 zc->zc_nvlist_dst_filled = B_TRUE; 1319 return (error); 1320 } 1321 1322 static int 1323 getzfsvfs(const char *dsname, zfsvfs_t **zfvp) 1324 { 1325 objset_t *os; 1326 int error; 1327 1328 error = dmu_objset_hold(dsname, FTAG, &os); 1329 if (error != 0) 1330 return (error); 1331 if (dmu_objset_type(os) != DMU_OST_ZFS) { 1332 dmu_objset_rele(os, FTAG); 1333 return (SET_ERROR(EINVAL)); 1334 } 1335 1336 mutex_enter(&os->os_user_ptr_lock); 1337 *zfvp = dmu_objset_get_user(os); 1338 if (*zfvp) { 1339 VFS_HOLD((*zfvp)->z_vfs); 1340 } else { 1341 error = SET_ERROR(ESRCH); 1342 } 1343 mutex_exit(&os->os_user_ptr_lock); 1344 dmu_objset_rele(os, FTAG); 1345 return (error); 1346 } 1347 1348 /* 1349 * Find a zfsvfs_t for a mounted filesystem, or create our own, in which 1350 * case its z_vfs will be NULL, and it will be opened as the owner. 1351 * If 'writer' is set, the z_teardown_lock will be held for RW_WRITER, 1352 * which prevents all vnode ops from running. 1353 */ 1354 static int 1355 zfsvfs_hold(const char *name, void *tag, zfsvfs_t **zfvp, boolean_t writer) 1356 { 1357 int error = 0; 1358 1359 if (getzfsvfs(name, zfvp) != 0) 1360 error = zfsvfs_create(name, zfvp); 1361 if (error == 0) { 1362 rrw_enter(&(*zfvp)->z_teardown_lock, (writer) ? RW_WRITER : 1363 RW_READER, tag); 1364 if ((*zfvp)->z_unmounted) { 1365 /* 1366 * XXX we could probably try again, since the unmounting 1367 * thread should be just about to disassociate the 1368 * objset from the zfsvfs. 1369 */ 1370 rrw_exit(&(*zfvp)->z_teardown_lock, tag); 1371 return (SET_ERROR(EBUSY)); 1372 } 1373 } 1374 return (error); 1375 } 1376 1377 static void 1378 zfsvfs_rele(zfsvfs_t *zfsvfs, void *tag) 1379 { 1380 rrw_exit(&zfsvfs->z_teardown_lock, tag); 1381 1382 if (zfsvfs->z_vfs) { 1383 VFS_RELE(zfsvfs->z_vfs); 1384 } else { 1385 dmu_objset_disown(zfsvfs->z_os, zfsvfs); 1386 zfsvfs_free(zfsvfs); 1387 } 1388 } 1389 1390 static int 1391 zfs_ioc_pool_create(zfs_cmd_t *zc) 1392 { 1393 int error; 1394 nvlist_t *config, *props = NULL; 1395 nvlist_t *rootprops = NULL; 1396 nvlist_t *zplprops = NULL; 1397 1398 if (error = get_nvlist(zc->zc_nvlist_conf, zc->zc_nvlist_conf_size, 1399 zc->zc_iflags, &config)) 1400 return (error); 1401 1402 if (zc->zc_nvlist_src_size != 0 && (error = 1403 get_nvlist(zc->zc_nvlist_src, zc->zc_nvlist_src_size, 1404 zc->zc_iflags, &props))) { 1405 nvlist_free(config); 1406 return (error); 1407 } 1408 1409 if (props) { 1410 nvlist_t *nvl = NULL; 1411 uint64_t version = SPA_VERSION; 1412 1413 (void) nvlist_lookup_uint64(props, 1414 zpool_prop_to_name(ZPOOL_PROP_VERSION), &version); 1415 if (!SPA_VERSION_IS_SUPPORTED(version)) { 1416 error = SET_ERROR(EINVAL); 1417 goto pool_props_bad; 1418 } 1419 (void) nvlist_lookup_nvlist(props, ZPOOL_ROOTFS_PROPS, &nvl); 1420 if (nvl) { 1421 error = nvlist_dup(nvl, &rootprops, KM_SLEEP); 1422 if (error != 0) { 1423 nvlist_free(config); 1424 nvlist_free(props); 1425 return (error); 1426 } 1427 (void) nvlist_remove_all(props, ZPOOL_ROOTFS_PROPS); 1428 } 1429 VERIFY(nvlist_alloc(&zplprops, NV_UNIQUE_NAME, KM_SLEEP) == 0); 1430 error = zfs_fill_zplprops_root(version, rootprops, 1431 zplprops, NULL); 1432 if (error != 0) 1433 goto pool_props_bad; 1434 } 1435 1436 error = spa_create(zc->zc_name, config, props, zplprops); 1437 1438 /* 1439 * Set the remaining root properties 1440 */ 1441 if (!error && (error = zfs_set_prop_nvlist(zc->zc_name, 1442 ZPROP_SRC_LOCAL, rootprops, NULL)) != 0) 1443 (void) spa_destroy(zc->zc_name); 1444 1445 pool_props_bad: 1446 nvlist_free(rootprops); 1447 nvlist_free(zplprops); 1448 nvlist_free(config); 1449 nvlist_free(props); 1450 1451 return (error); 1452 } 1453 1454 static int 1455 zfs_ioc_pool_destroy(zfs_cmd_t *zc) 1456 { 1457 int error; 1458 zfs_log_history(zc); 1459 error = spa_destroy(zc->zc_name); 1460 if (error == 0) 1461 zvol_remove_minors(zc->zc_name); 1462 return (error); 1463 } 1464 1465 static int 1466 zfs_ioc_pool_import(zfs_cmd_t *zc) 1467 { 1468 nvlist_t *config, *props = NULL; 1469 uint64_t guid; 1470 int error; 1471 1472 if ((error = get_nvlist(zc->zc_nvlist_conf, zc->zc_nvlist_conf_size, 1473 zc->zc_iflags, &config)) != 0) 1474 return (error); 1475 1476 if (zc->zc_nvlist_src_size != 0 && (error = 1477 get_nvlist(zc->zc_nvlist_src, zc->zc_nvlist_src_size, 1478 zc->zc_iflags, &props))) { 1479 nvlist_free(config); 1480 return (error); 1481 } 1482 1483 if (nvlist_lookup_uint64(config, ZPOOL_CONFIG_POOL_GUID, &guid) != 0 || 1484 guid != zc->zc_guid) 1485 error = SET_ERROR(EINVAL); 1486 else 1487 error = spa_import(zc->zc_name, config, props, zc->zc_cookie); 1488 1489 if (zc->zc_nvlist_dst != 0) { 1490 int err; 1491 1492 if ((err = put_nvlist(zc, config)) != 0) 1493 error = err; 1494 } 1495 1496 nvlist_free(config); 1497 1498 if (props) 1499 nvlist_free(props); 1500 1501 return (error); 1502 } 1503 1504 static int 1505 zfs_ioc_pool_export(zfs_cmd_t *zc) 1506 { 1507 int error; 1508 boolean_t force = (boolean_t)zc->zc_cookie; 1509 boolean_t hardforce = (boolean_t)zc->zc_guid; 1510 1511 zfs_log_history(zc); 1512 error = spa_export(zc->zc_name, NULL, force, hardforce); 1513 if (error == 0) 1514 zvol_remove_minors(zc->zc_name); 1515 return (error); 1516 } 1517 1518 static int 1519 zfs_ioc_pool_configs(zfs_cmd_t *zc) 1520 { 1521 nvlist_t *configs; 1522 int error; 1523 1524 if ((configs = spa_all_configs(&zc->zc_cookie)) == NULL) 1525 return (SET_ERROR(EEXIST)); 1526 1527 error = put_nvlist(zc, configs); 1528 1529 nvlist_free(configs); 1530 1531 return (error); 1532 } 1533 1534 /* 1535 * inputs: 1536 * zc_name name of the pool 1537 * 1538 * outputs: 1539 * zc_cookie real errno 1540 * zc_nvlist_dst config nvlist 1541 * zc_nvlist_dst_size size of config nvlist 1542 */ 1543 static int 1544 zfs_ioc_pool_stats(zfs_cmd_t *zc) 1545 { 1546 nvlist_t *config; 1547 int error; 1548 int ret = 0; 1549 1550 error = spa_get_stats(zc->zc_name, &config, zc->zc_value, 1551 sizeof (zc->zc_value)); 1552 1553 if (config != NULL) { 1554 ret = put_nvlist(zc, config); 1555 nvlist_free(config); 1556 1557 /* 1558 * The config may be present even if 'error' is non-zero. 1559 * In this case we return success, and preserve the real errno 1560 * in 'zc_cookie'. 1561 */ 1562 zc->zc_cookie = error; 1563 } else { 1564 ret = error; 1565 } 1566 1567 return (ret); 1568 } 1569 1570 /* 1571 * Try to import the given pool, returning pool stats as appropriate so that 1572 * user land knows which devices are available and overall pool health. 1573 */ 1574 static int 1575 zfs_ioc_pool_tryimport(zfs_cmd_t *zc) 1576 { 1577 nvlist_t *tryconfig, *config; 1578 int error; 1579 1580 if ((error = get_nvlist(zc->zc_nvlist_conf, zc->zc_nvlist_conf_size, 1581 zc->zc_iflags, &tryconfig)) != 0) 1582 return (error); 1583 1584 config = spa_tryimport(tryconfig); 1585 1586 nvlist_free(tryconfig); 1587 1588 if (config == NULL) 1589 return (SET_ERROR(EINVAL)); 1590 1591 error = put_nvlist(zc, config); 1592 nvlist_free(config); 1593 1594 return (error); 1595 } 1596 1597 /* 1598 * inputs: 1599 * zc_name name of the pool 1600 * zc_cookie scan func (pool_scan_func_t) 1601 */ 1602 static int 1603 zfs_ioc_pool_scan(zfs_cmd_t *zc) 1604 { 1605 spa_t *spa; 1606 int error; 1607 1608 if ((error = spa_open(zc->zc_name, &spa, FTAG)) != 0) 1609 return (error); 1610 1611 if (zc->zc_cookie == POOL_SCAN_NONE) 1612 error = spa_scan_stop(spa); 1613 else 1614 error = spa_scan(spa, zc->zc_cookie); 1615 1616 spa_close(spa, FTAG); 1617 1618 return (error); 1619 } 1620 1621 static int 1622 zfs_ioc_pool_freeze(zfs_cmd_t *zc) 1623 { 1624 spa_t *spa; 1625 int error; 1626 1627 error = spa_open(zc->zc_name, &spa, FTAG); 1628 if (error == 0) { 1629 spa_freeze(spa); 1630 spa_close(spa, FTAG); 1631 } 1632 return (error); 1633 } 1634 1635 static int 1636 zfs_ioc_pool_upgrade(zfs_cmd_t *zc) 1637 { 1638 spa_t *spa; 1639 int error; 1640 1641 if ((error = spa_open(zc->zc_name, &spa, FTAG)) != 0) 1642 return (error); 1643 1644 if (zc->zc_cookie < spa_version(spa) || 1645 !SPA_VERSION_IS_SUPPORTED(zc->zc_cookie)) { 1646 spa_close(spa, FTAG); 1647 return (SET_ERROR(EINVAL)); 1648 } 1649 1650 spa_upgrade(spa, zc->zc_cookie); 1651 spa_close(spa, FTAG); 1652 1653 return (error); 1654 } 1655 1656 static int 1657 zfs_ioc_pool_get_history(zfs_cmd_t *zc) 1658 { 1659 spa_t *spa; 1660 char *hist_buf; 1661 uint64_t size; 1662 int error; 1663 1664 if ((size = zc->zc_history_len) == 0) 1665 return (SET_ERROR(EINVAL)); 1666 1667 if ((error = spa_open(zc->zc_name, &spa, FTAG)) != 0) 1668 return (error); 1669 1670 if (spa_version(spa) < SPA_VERSION_ZPOOL_HISTORY) { 1671 spa_close(spa, FTAG); 1672 return (SET_ERROR(ENOTSUP)); 1673 } 1674 1675 hist_buf = kmem_alloc(size, KM_SLEEP); 1676 if ((error = spa_history_get(spa, &zc->zc_history_offset, 1677 &zc->zc_history_len, hist_buf)) == 0) { 1678 error = ddi_copyout(hist_buf, 1679 (void *)(uintptr_t)zc->zc_history, 1680 zc->zc_history_len, zc->zc_iflags); 1681 } 1682 1683 spa_close(spa, FTAG); 1684 kmem_free(hist_buf, size); 1685 return (error); 1686 } 1687 1688 static int 1689 zfs_ioc_pool_reguid(zfs_cmd_t *zc) 1690 { 1691 spa_t *spa; 1692 int error; 1693 1694 error = spa_open(zc->zc_name, &spa, FTAG); 1695 if (error == 0) { 1696 error = spa_change_guid(spa); 1697 spa_close(spa, FTAG); 1698 } 1699 return (error); 1700 } 1701 1702 static int 1703 zfs_ioc_dsobj_to_dsname(zfs_cmd_t *zc) 1704 { 1705 return (dsl_dsobj_to_dsname(zc->zc_name, zc->zc_obj, zc->zc_value)); 1706 } 1707 1708 /* 1709 * inputs: 1710 * zc_name name of filesystem 1711 * zc_obj object to find 1712 * 1713 * outputs: 1714 * zc_value name of object 1715 */ 1716 static int 1717 zfs_ioc_obj_to_path(zfs_cmd_t *zc) 1718 { 1719 objset_t *os; 1720 int error; 1721 1722 /* XXX reading from objset not owned */ 1723 if ((error = dmu_objset_hold(zc->zc_name, FTAG, &os)) != 0) 1724 return (error); 1725 if (dmu_objset_type(os) != DMU_OST_ZFS) { 1726 dmu_objset_rele(os, FTAG); 1727 return (SET_ERROR(EINVAL)); 1728 } 1729 error = zfs_obj_to_path(os, zc->zc_obj, zc->zc_value, 1730 sizeof (zc->zc_value)); 1731 dmu_objset_rele(os, FTAG); 1732 1733 return (error); 1734 } 1735 1736 /* 1737 * inputs: 1738 * zc_name name of filesystem 1739 * zc_obj object to find 1740 * 1741 * outputs: 1742 * zc_stat stats on object 1743 * zc_value path to object 1744 */ 1745 static int 1746 zfs_ioc_obj_to_stats(zfs_cmd_t *zc) 1747 { 1748 objset_t *os; 1749 int error; 1750 1751 /* XXX reading from objset not owned */ 1752 if ((error = dmu_objset_hold(zc->zc_name, FTAG, &os)) != 0) 1753 return (error); 1754 if (dmu_objset_type(os) != DMU_OST_ZFS) { 1755 dmu_objset_rele(os, FTAG); 1756 return (SET_ERROR(EINVAL)); 1757 } 1758 error = zfs_obj_to_stats(os, zc->zc_obj, &zc->zc_stat, zc->zc_value, 1759 sizeof (zc->zc_value)); 1760 dmu_objset_rele(os, FTAG); 1761 1762 return (error); 1763 } 1764 1765 static int 1766 zfs_ioc_vdev_add(zfs_cmd_t *zc) 1767 { 1768 spa_t *spa; 1769 int error; 1770 nvlist_t *config, **l2cache, **spares; 1771 uint_t nl2cache = 0, nspares = 0; 1772 1773 error = spa_open(zc->zc_name, &spa, FTAG); 1774 if (error != 0) 1775 return (error); 1776 1777 error = get_nvlist(zc->zc_nvlist_conf, zc->zc_nvlist_conf_size, 1778 zc->zc_iflags, &config); 1779 (void) nvlist_lookup_nvlist_array(config, ZPOOL_CONFIG_L2CACHE, 1780 &l2cache, &nl2cache); 1781 1782 (void) nvlist_lookup_nvlist_array(config, ZPOOL_CONFIG_SPARES, 1783 &spares, &nspares); 1784 1785 /* 1786 * A root pool with concatenated devices is not supported. 1787 * Thus, can not add a device to a root pool. 1788 * 1789 * Intent log device can not be added to a rootpool because 1790 * during mountroot, zil is replayed, a seperated log device 1791 * can not be accessed during the mountroot time. 1792 * 1793 * l2cache and spare devices are ok to be added to a rootpool. 1794 */ 1795 if (spa_bootfs(spa) != 0 && nl2cache == 0 && nspares == 0) { 1796 nvlist_free(config); 1797 spa_close(spa, FTAG); 1798 return (SET_ERROR(EDOM)); 1799 } 1800 1801 if (error == 0) { 1802 error = spa_vdev_add(spa, config); 1803 nvlist_free(config); 1804 } 1805 spa_close(spa, FTAG); 1806 return (error); 1807 } 1808 1809 /* 1810 * inputs: 1811 * zc_name name of the pool 1812 * zc_nvlist_conf nvlist of devices to remove 1813 * zc_cookie to stop the remove? 1814 */ 1815 static int 1816 zfs_ioc_vdev_remove(zfs_cmd_t *zc) 1817 { 1818 spa_t *spa; 1819 int error; 1820 1821 error = spa_open(zc->zc_name, &spa, FTAG); 1822 if (error != 0) 1823 return (error); 1824 error = spa_vdev_remove(spa, zc->zc_guid, B_FALSE); 1825 spa_close(spa, FTAG); 1826 return (error); 1827 } 1828 1829 static int 1830 zfs_ioc_vdev_set_state(zfs_cmd_t *zc) 1831 { 1832 spa_t *spa; 1833 int error; 1834 vdev_state_t newstate = VDEV_STATE_UNKNOWN; 1835 1836 if ((error = spa_open(zc->zc_name, &spa, FTAG)) != 0) 1837 return (error); 1838 switch (zc->zc_cookie) { 1839 case VDEV_STATE_ONLINE: 1840 error = vdev_online(spa, zc->zc_guid, zc->zc_obj, &newstate); 1841 break; 1842 1843 case VDEV_STATE_OFFLINE: 1844 error = vdev_offline(spa, zc->zc_guid, zc->zc_obj); 1845 break; 1846 1847 case VDEV_STATE_FAULTED: 1848 if (zc->zc_obj != VDEV_AUX_ERR_EXCEEDED && 1849 zc->zc_obj != VDEV_AUX_EXTERNAL) 1850 zc->zc_obj = VDEV_AUX_ERR_EXCEEDED; 1851 1852 error = vdev_fault(spa, zc->zc_guid, zc->zc_obj); 1853 break; 1854 1855 case VDEV_STATE_DEGRADED: 1856 if (zc->zc_obj != VDEV_AUX_ERR_EXCEEDED && 1857 zc->zc_obj != VDEV_AUX_EXTERNAL) 1858 zc->zc_obj = VDEV_AUX_ERR_EXCEEDED; 1859 1860 error = vdev_degrade(spa, zc->zc_guid, zc->zc_obj); 1861 break; 1862 1863 default: 1864 error = SET_ERROR(EINVAL); 1865 } 1866 zc->zc_cookie = newstate; 1867 spa_close(spa, FTAG); 1868 return (error); 1869 } 1870 1871 static int 1872 zfs_ioc_vdev_attach(zfs_cmd_t *zc) 1873 { 1874 spa_t *spa; 1875 int replacing = zc->zc_cookie; 1876 nvlist_t *config; 1877 int error; 1878 1879 if ((error = spa_open(zc->zc_name, &spa, FTAG)) != 0) 1880 return (error); 1881 1882 if ((error = get_nvlist(zc->zc_nvlist_conf, zc->zc_nvlist_conf_size, 1883 zc->zc_iflags, &config)) == 0) { 1884 error = spa_vdev_attach(spa, zc->zc_guid, config, replacing); 1885 nvlist_free(config); 1886 } 1887 1888 spa_close(spa, FTAG); 1889 return (error); 1890 } 1891 1892 static int 1893 zfs_ioc_vdev_detach(zfs_cmd_t *zc) 1894 { 1895 spa_t *spa; 1896 int error; 1897 1898 if ((error = spa_open(zc->zc_name, &spa, FTAG)) != 0) 1899 return (error); 1900 1901 error = spa_vdev_detach(spa, zc->zc_guid, 0, B_FALSE); 1902 1903 spa_close(spa, FTAG); 1904 return (error); 1905 } 1906 1907 static int 1908 zfs_ioc_vdev_split(zfs_cmd_t *zc) 1909 { 1910 spa_t *spa; 1911 nvlist_t *config, *props = NULL; 1912 int error; 1913 boolean_t exp = !!(zc->zc_cookie & ZPOOL_EXPORT_AFTER_SPLIT); 1914 1915 if ((error = spa_open(zc->zc_name, &spa, FTAG)) != 0) 1916 return (error); 1917 1918 if (error = get_nvlist(zc->zc_nvlist_conf, zc->zc_nvlist_conf_size, 1919 zc->zc_iflags, &config)) { 1920 spa_close(spa, FTAG); 1921 return (error); 1922 } 1923 1924 if (zc->zc_nvlist_src_size != 0 && (error = 1925 get_nvlist(zc->zc_nvlist_src, zc->zc_nvlist_src_size, 1926 zc->zc_iflags, &props))) { 1927 spa_close(spa, FTAG); 1928 nvlist_free(config); 1929 return (error); 1930 } 1931 1932 error = spa_vdev_split_mirror(spa, zc->zc_string, config, props, exp); 1933 1934 spa_close(spa, FTAG); 1935 1936 nvlist_free(config); 1937 nvlist_free(props); 1938 1939 return (error); 1940 } 1941 1942 static int 1943 zfs_ioc_vdev_setpath(zfs_cmd_t *zc) 1944 { 1945 spa_t *spa; 1946 char *path = zc->zc_value; 1947 uint64_t guid = zc->zc_guid; 1948 int error; 1949 1950 error = spa_open(zc->zc_name, &spa, FTAG); 1951 if (error != 0) 1952 return (error); 1953 1954 error = spa_vdev_setpath(spa, guid, path); 1955 spa_close(spa, FTAG); 1956 return (error); 1957 } 1958 1959 static int 1960 zfs_ioc_vdev_setfru(zfs_cmd_t *zc) 1961 { 1962 spa_t *spa; 1963 char *fru = zc->zc_value; 1964 uint64_t guid = zc->zc_guid; 1965 int error; 1966 1967 error = spa_open(zc->zc_name, &spa, FTAG); 1968 if (error != 0) 1969 return (error); 1970 1971 error = spa_vdev_setfru(spa, guid, fru); 1972 spa_close(spa, FTAG); 1973 return (error); 1974 } 1975 1976 static int 1977 zfs_ioc_objset_stats_impl(zfs_cmd_t *zc, objset_t *os) 1978 { 1979 int error = 0; 1980 nvlist_t *nv; 1981 1982 dmu_objset_fast_stat(os, &zc->zc_objset_stats); 1983 1984 if (zc->zc_nvlist_dst != 0 && 1985 (error = dsl_prop_get_all(os, &nv)) == 0) { 1986 dmu_objset_stats(os, nv); 1987 /* 1988 * NB: zvol_get_stats() will read the objset contents, 1989 * which we aren't supposed to do with a 1990 * DS_MODE_USER hold, because it could be 1991 * inconsistent. So this is a bit of a workaround... 1992 * XXX reading with out owning 1993 */ 1994 if (!zc->zc_objset_stats.dds_inconsistent && 1995 dmu_objset_type(os) == DMU_OST_ZVOL) { 1996 error = zvol_get_stats(os, nv); 1997 if (error == EIO) 1998 return (error); 1999 VERIFY0(error); 2000 } 2001 error = put_nvlist(zc, nv); 2002 nvlist_free(nv); 2003 } 2004 2005 return (error); 2006 } 2007 2008 /* 2009 * inputs: 2010 * zc_name name of filesystem 2011 * zc_nvlist_dst_size size of buffer for property nvlist 2012 * 2013 * outputs: 2014 * zc_objset_stats stats 2015 * zc_nvlist_dst property nvlist 2016 * zc_nvlist_dst_size size of property nvlist 2017 */ 2018 static int 2019 zfs_ioc_objset_stats(zfs_cmd_t *zc) 2020 { 2021 objset_t *os; 2022 int error; 2023 2024 error = dmu_objset_hold(zc->zc_name, FTAG, &os); 2025 if (error == 0) { 2026 error = zfs_ioc_objset_stats_impl(zc, os); 2027 dmu_objset_rele(os, FTAG); 2028 } 2029 2030 return (error); 2031 } 2032 2033 /* 2034 * inputs: 2035 * zc_name name of filesystem 2036 * zc_nvlist_dst_size size of buffer for property nvlist 2037 * 2038 * outputs: 2039 * zc_nvlist_dst received property nvlist 2040 * zc_nvlist_dst_size size of received property nvlist 2041 * 2042 * Gets received properties (distinct from local properties on or after 2043 * SPA_VERSION_RECVD_PROPS) for callers who want to differentiate received from 2044 * local property values. 2045 */ 2046 static int 2047 zfs_ioc_objset_recvd_props(zfs_cmd_t *zc) 2048 { 2049 int error = 0; 2050 nvlist_t *nv; 2051 2052 /* 2053 * Without this check, we would return local property values if the 2054 * caller has not already received properties on or after 2055 * SPA_VERSION_RECVD_PROPS. 2056 */ 2057 if (!dsl_prop_get_hasrecvd(zc->zc_name)) 2058 return (SET_ERROR(ENOTSUP)); 2059 2060 if (zc->zc_nvlist_dst != 0 && 2061 (error = dsl_prop_get_received(zc->zc_name, &nv)) == 0) { 2062 error = put_nvlist(zc, nv); 2063 nvlist_free(nv); 2064 } 2065 2066 return (error); 2067 } 2068 2069 static int 2070 nvl_add_zplprop(objset_t *os, nvlist_t *props, zfs_prop_t prop) 2071 { 2072 uint64_t value; 2073 int error; 2074 2075 /* 2076 * zfs_get_zplprop() will either find a value or give us 2077 * the default value (if there is one). 2078 */ 2079 if ((error = zfs_get_zplprop(os, prop, &value)) != 0) 2080 return (error); 2081 VERIFY(nvlist_add_uint64(props, zfs_prop_to_name(prop), value) == 0); 2082 return (0); 2083 } 2084 2085 /* 2086 * inputs: 2087 * zc_name name of filesystem 2088 * zc_nvlist_dst_size size of buffer for zpl property nvlist 2089 * 2090 * outputs: 2091 * zc_nvlist_dst zpl property nvlist 2092 * zc_nvlist_dst_size size of zpl property nvlist 2093 */ 2094 static int 2095 zfs_ioc_objset_zplprops(zfs_cmd_t *zc) 2096 { 2097 objset_t *os; 2098 int err; 2099 2100 /* XXX reading without owning */ 2101 if (err = dmu_objset_hold(zc->zc_name, FTAG, &os)) 2102 return (err); 2103 2104 dmu_objset_fast_stat(os, &zc->zc_objset_stats); 2105 2106 /* 2107 * NB: nvl_add_zplprop() will read the objset contents, 2108 * which we aren't supposed to do with a DS_MODE_USER 2109 * hold, because it could be inconsistent. 2110 */ 2111 if (zc->zc_nvlist_dst != NULL && 2112 !zc->zc_objset_stats.dds_inconsistent && 2113 dmu_objset_type(os) == DMU_OST_ZFS) { 2114 nvlist_t *nv; 2115 2116 VERIFY(nvlist_alloc(&nv, NV_UNIQUE_NAME, KM_SLEEP) == 0); 2117 if ((err = nvl_add_zplprop(os, nv, ZFS_PROP_VERSION)) == 0 && 2118 (err = nvl_add_zplprop(os, nv, ZFS_PROP_NORMALIZE)) == 0 && 2119 (err = nvl_add_zplprop(os, nv, ZFS_PROP_UTF8ONLY)) == 0 && 2120 (err = nvl_add_zplprop(os, nv, ZFS_PROP_CASE)) == 0) 2121 err = put_nvlist(zc, nv); 2122 nvlist_free(nv); 2123 } else { 2124 err = SET_ERROR(ENOENT); 2125 } 2126 dmu_objset_rele(os, FTAG); 2127 return (err); 2128 } 2129 2130 static boolean_t 2131 dataset_name_hidden(const char *name) 2132 { 2133 /* 2134 * Skip over datasets that are not visible in this zone, 2135 * internal datasets (which have a $ in their name), and 2136 * temporary datasets (which have a % in their name). 2137 */ 2138 if (strchr(name, '$') != NULL) 2139 return (B_TRUE); 2140 if (strchr(name, '%') != NULL) 2141 return (B_TRUE); 2142 if (!INGLOBALZONE(curproc) && !zone_dataset_visible(name, NULL)) 2143 return (B_TRUE); 2144 return (B_FALSE); 2145 } 2146 2147 /* 2148 * inputs: 2149 * zc_name name of filesystem 2150 * zc_cookie zap cursor 2151 * zc_nvlist_dst_size size of buffer for property nvlist 2152 * 2153 * outputs: 2154 * zc_name name of next filesystem 2155 * zc_cookie zap cursor 2156 * zc_objset_stats stats 2157 * zc_nvlist_dst property nvlist 2158 * zc_nvlist_dst_size size of property nvlist 2159 */ 2160 static int 2161 zfs_ioc_dataset_list_next(zfs_cmd_t *zc) 2162 { 2163 objset_t *os; 2164 int error; 2165 char *p; 2166 size_t orig_len = strlen(zc->zc_name); 2167 2168 top: 2169 if (error = dmu_objset_hold(zc->zc_name, FTAG, &os)) { 2170 if (error == ENOENT) 2171 error = SET_ERROR(ESRCH); 2172 return (error); 2173 } 2174 2175 p = strrchr(zc->zc_name, '/'); 2176 if (p == NULL || p[1] != '\0') 2177 (void) strlcat(zc->zc_name, "/", sizeof (zc->zc_name)); 2178 p = zc->zc_name + strlen(zc->zc_name); 2179 2180 do { 2181 error = dmu_dir_list_next(os, 2182 sizeof (zc->zc_name) - (p - zc->zc_name), p, 2183 NULL, &zc->zc_cookie); 2184 if (error == ENOENT) 2185 error = SET_ERROR(ESRCH); 2186 } while (error == 0 && dataset_name_hidden(zc->zc_name)); 2187 dmu_objset_rele(os, FTAG); 2188 2189 /* 2190 * If it's an internal dataset (ie. with a '$' in its name), 2191 * don't try to get stats for it, otherwise we'll return ENOENT. 2192 */ 2193 if (error == 0 && strchr(zc->zc_name, '$') == NULL) { 2194 error = zfs_ioc_objset_stats(zc); /* fill in the stats */ 2195 if (error == ENOENT) { 2196 /* We lost a race with destroy, get the next one. */ 2197 zc->zc_name[orig_len] = '\0'; 2198 goto top; 2199 } 2200 } 2201 return (error); 2202 } 2203 2204 /* 2205 * inputs: 2206 * zc_name name of filesystem 2207 * zc_cookie zap cursor 2208 * zc_nvlist_dst_size size of buffer for property nvlist 2209 * 2210 * outputs: 2211 * zc_name name of next snapshot 2212 * zc_objset_stats stats 2213 * zc_nvlist_dst property nvlist 2214 * zc_nvlist_dst_size size of property nvlist 2215 */ 2216 static int 2217 zfs_ioc_snapshot_list_next(zfs_cmd_t *zc) 2218 { 2219 objset_t *os; 2220 int error; 2221 2222 error = dmu_objset_hold(zc->zc_name, FTAG, &os); 2223 if (error != 0) { 2224 return (error == ENOENT ? ESRCH : error); 2225 } 2226 2227 /* 2228 * A dataset name of maximum length cannot have any snapshots, 2229 * so exit immediately. 2230 */ 2231 if (strlcat(zc->zc_name, "@", sizeof (zc->zc_name)) >= MAXNAMELEN) { 2232 dmu_objset_rele(os, FTAG); 2233 return (SET_ERROR(ESRCH)); 2234 } 2235 2236 error = dmu_snapshot_list_next(os, 2237 sizeof (zc->zc_name) - strlen(zc->zc_name), 2238 zc->zc_name + strlen(zc->zc_name), &zc->zc_obj, &zc->zc_cookie, 2239 NULL); 2240 2241 if (error == 0) { 2242 dsl_dataset_t *ds; 2243 dsl_pool_t *dp = os->os_dsl_dataset->ds_dir->dd_pool; 2244 2245 error = dsl_dataset_hold_obj(dp, zc->zc_obj, FTAG, &ds); 2246 if (error == 0) { 2247 objset_t *ossnap; 2248 2249 error = dmu_objset_from_ds(ds, &ossnap); 2250 if (error == 0) 2251 error = zfs_ioc_objset_stats_impl(zc, ossnap); 2252 dsl_dataset_rele(ds, FTAG); 2253 } 2254 } else if (error == ENOENT) { 2255 error = SET_ERROR(ESRCH); 2256 } 2257 2258 dmu_objset_rele(os, FTAG); 2259 /* if we failed, undo the @ that we tacked on to zc_name */ 2260 if (error != 0) 2261 *strchr(zc->zc_name, '@') = '\0'; 2262 return (error); 2263 } 2264 2265 static int 2266 zfs_prop_set_userquota(const char *dsname, nvpair_t *pair) 2267 { 2268 const char *propname = nvpair_name(pair); 2269 uint64_t *valary; 2270 unsigned int vallen; 2271 const char *domain; 2272 char *dash; 2273 zfs_userquota_prop_t type; 2274 uint64_t rid; 2275 uint64_t quota; 2276 zfsvfs_t *zfsvfs; 2277 int err; 2278 2279 if (nvpair_type(pair) == DATA_TYPE_NVLIST) { 2280 nvlist_t *attrs; 2281 VERIFY(nvpair_value_nvlist(pair, &attrs) == 0); 2282 if (nvlist_lookup_nvpair(attrs, ZPROP_VALUE, 2283 &pair) != 0) 2284 return (SET_ERROR(EINVAL)); 2285 } 2286 2287 /* 2288 * A correctly constructed propname is encoded as 2289 * userquota@<rid>-<domain>. 2290 */ 2291 if ((dash = strchr(propname, '-')) == NULL || 2292 nvpair_value_uint64_array(pair, &valary, &vallen) != 0 || 2293 vallen != 3) 2294 return (SET_ERROR(EINVAL)); 2295 2296 domain = dash + 1; 2297 type = valary[0]; 2298 rid = valary[1]; 2299 quota = valary[2]; 2300 2301 err = zfsvfs_hold(dsname, FTAG, &zfsvfs, B_FALSE); 2302 if (err == 0) { 2303 err = zfs_set_userquota(zfsvfs, type, domain, rid, quota); 2304 zfsvfs_rele(zfsvfs, FTAG); 2305 } 2306 2307 return (err); 2308 } 2309 2310 /* 2311 * If the named property is one that has a special function to set its value, 2312 * return 0 on success and a positive error code on failure; otherwise if it is 2313 * not one of the special properties handled by this function, return -1. 2314 * 2315 * XXX: It would be better for callers of the property interface if we handled 2316 * these special cases in dsl_prop.c (in the dsl layer). 2317 */ 2318 static int 2319 zfs_prop_set_special(const char *dsname, zprop_source_t source, 2320 nvpair_t *pair) 2321 { 2322 const char *propname = nvpair_name(pair); 2323 zfs_prop_t prop = zfs_name_to_prop(propname); 2324 uint64_t intval; 2325 int err; 2326 2327 if (prop == ZPROP_INVAL) { 2328 if (zfs_prop_userquota(propname)) 2329 return (zfs_prop_set_userquota(dsname, pair)); 2330 return (-1); 2331 } 2332 2333 if (nvpair_type(pair) == DATA_TYPE_NVLIST) { 2334 nvlist_t *attrs; 2335 VERIFY(nvpair_value_nvlist(pair, &attrs) == 0); 2336 VERIFY(nvlist_lookup_nvpair(attrs, ZPROP_VALUE, 2337 &pair) == 0); 2338 } 2339 2340 if (zfs_prop_get_type(prop) == PROP_TYPE_STRING) 2341 return (-1); 2342 2343 VERIFY(0 == nvpair_value_uint64(pair, &intval)); 2344 2345 switch (prop) { 2346 case ZFS_PROP_QUOTA: 2347 err = dsl_dir_set_quota(dsname, source, intval); 2348 break; 2349 case ZFS_PROP_REFQUOTA: 2350 err = dsl_dataset_set_refquota(dsname, source, intval); 2351 break; 2352 case ZFS_PROP_RESERVATION: 2353 err = dsl_dir_set_reservation(dsname, source, intval); 2354 break; 2355 case ZFS_PROP_REFRESERVATION: 2356 err = dsl_dataset_set_refreservation(dsname, source, intval); 2357 break; 2358 case ZFS_PROP_VOLSIZE: 2359 err = zvol_set_volsize(dsname, intval); 2360 break; 2361 case ZFS_PROP_VERSION: 2362 { 2363 zfsvfs_t *zfsvfs; 2364 2365 if ((err = zfsvfs_hold(dsname, FTAG, &zfsvfs, B_TRUE)) != 0) 2366 break; 2367 2368 err = zfs_set_version(zfsvfs, intval); 2369 zfsvfs_rele(zfsvfs, FTAG); 2370 2371 if (err == 0 && intval >= ZPL_VERSION_USERSPACE) { 2372 zfs_cmd_t *zc; 2373 2374 zc = kmem_zalloc(sizeof (zfs_cmd_t), KM_SLEEP); 2375 (void) strcpy(zc->zc_name, dsname); 2376 (void) zfs_ioc_userspace_upgrade(zc); 2377 kmem_free(zc, sizeof (zfs_cmd_t)); 2378 } 2379 break; 2380 } 2381 case ZFS_PROP_COMPRESSION: 2382 { 2383 if (intval == ZIO_COMPRESS_LZ4) { 2384 zfeature_info_t *feature = 2385 &spa_feature_table[SPA_FEATURE_LZ4_COMPRESS]; 2386 spa_t *spa; 2387 2388 if ((err = spa_open(dsname, &spa, FTAG)) != 0) 2389 return (err); 2390 2391 /* 2392 * Setting the LZ4 compression algorithm activates 2393 * the feature. 2394 */ 2395 if (!spa_feature_is_active(spa, feature)) { 2396 if ((err = zfs_prop_activate_feature(spa, 2397 feature)) != 0) { 2398 spa_close(spa, FTAG); 2399 return (err); 2400 } 2401 } 2402 2403 spa_close(spa, FTAG); 2404 } 2405 /* 2406 * We still want the default set action to be performed in the 2407 * caller, we only performed zfeature settings here. 2408 */ 2409 err = -1; 2410 break; 2411 } 2412 2413 default: 2414 err = -1; 2415 } 2416 2417 return (err); 2418 } 2419 2420 /* 2421 * This function is best effort. If it fails to set any of the given properties, 2422 * it continues to set as many as it can and returns the last error 2423 * encountered. If the caller provides a non-NULL errlist, it will be filled in 2424 * with the list of names of all the properties that failed along with the 2425 * corresponding error numbers. 2426 * 2427 * If every property is set successfully, zero is returned and errlist is not 2428 * modified. 2429 */ 2430 int 2431 zfs_set_prop_nvlist(const char *dsname, zprop_source_t source, nvlist_t *nvl, 2432 nvlist_t *errlist) 2433 { 2434 nvpair_t *pair; 2435 nvpair_t *propval; 2436 int rv = 0; 2437 uint64_t intval; 2438 char *strval; 2439 nvlist_t *genericnvl = fnvlist_alloc(); 2440 nvlist_t *retrynvl = fnvlist_alloc(); 2441 2442 retry: 2443 pair = NULL; 2444 while ((pair = nvlist_next_nvpair(nvl, pair)) != NULL) { 2445 const char *propname = nvpair_name(pair); 2446 zfs_prop_t prop = zfs_name_to_prop(propname); 2447 int err = 0; 2448 2449 /* decode the property value */ 2450 propval = pair; 2451 if (nvpair_type(pair) == DATA_TYPE_NVLIST) { 2452 nvlist_t *attrs; 2453 attrs = fnvpair_value_nvlist(pair); 2454 if (nvlist_lookup_nvpair(attrs, ZPROP_VALUE, 2455 &propval) != 0) 2456 err = SET_ERROR(EINVAL); 2457 } 2458 2459 /* Validate value type */ 2460 if (err == 0 && prop == ZPROP_INVAL) { 2461 if (zfs_prop_user(propname)) { 2462 if (nvpair_type(propval) != DATA_TYPE_STRING) 2463 err = SET_ERROR(EINVAL); 2464 } else if (zfs_prop_userquota(propname)) { 2465 if (nvpair_type(propval) != 2466 DATA_TYPE_UINT64_ARRAY) 2467 err = SET_ERROR(EINVAL); 2468 } else { 2469 err = SET_ERROR(EINVAL); 2470 } 2471 } else if (err == 0) { 2472 if (nvpair_type(propval) == DATA_TYPE_STRING) { 2473 if (zfs_prop_get_type(prop) != PROP_TYPE_STRING) 2474 err = SET_ERROR(EINVAL); 2475 } else if (nvpair_type(propval) == DATA_TYPE_UINT64) { 2476 const char *unused; 2477 2478 intval = fnvpair_value_uint64(propval); 2479 2480 switch (zfs_prop_get_type(prop)) { 2481 case PROP_TYPE_NUMBER: 2482 break; 2483 case PROP_TYPE_STRING: 2484 err = SET_ERROR(EINVAL); 2485 break; 2486 case PROP_TYPE_INDEX: 2487 if (zfs_prop_index_to_string(prop, 2488 intval, &unused) != 0) 2489 err = SET_ERROR(EINVAL); 2490 break; 2491 default: 2492 cmn_err(CE_PANIC, 2493 "unknown property type"); 2494 } 2495 } else { 2496 err = SET_ERROR(EINVAL); 2497 } 2498 } 2499 2500 /* Validate permissions */ 2501 if (err == 0) 2502 err = zfs_check_settable(dsname, pair, CRED()); 2503 2504 if (err == 0) { 2505 err = zfs_prop_set_special(dsname, source, pair); 2506 if (err == -1) { 2507 /* 2508 * For better performance we build up a list of 2509 * properties to set in a single transaction. 2510 */ 2511 err = nvlist_add_nvpair(genericnvl, pair); 2512 } else if (err != 0 && nvl != retrynvl) { 2513 /* 2514 * This may be a spurious error caused by 2515 * receiving quota and reservation out of order. 2516 * Try again in a second pass. 2517 */ 2518 err = nvlist_add_nvpair(retrynvl, pair); 2519 } 2520 } 2521 2522 if (err != 0) { 2523 if (errlist != NULL) 2524 fnvlist_add_int32(errlist, propname, err); 2525 rv = err; 2526 } 2527 } 2528 2529 if (nvl != retrynvl && !nvlist_empty(retrynvl)) { 2530 nvl = retrynvl; 2531 goto retry; 2532 } 2533 2534 if (!nvlist_empty(genericnvl) && 2535 dsl_props_set(dsname, source, genericnvl) != 0) { 2536 /* 2537 * If this fails, we still want to set as many properties as we 2538 * can, so try setting them individually. 2539 */ 2540 pair = NULL; 2541 while ((pair = nvlist_next_nvpair(genericnvl, pair)) != NULL) { 2542 const char *propname = nvpair_name(pair); 2543 int err = 0; 2544 2545 propval = pair; 2546 if (nvpair_type(pair) == DATA_TYPE_NVLIST) { 2547 nvlist_t *attrs; 2548 attrs = fnvpair_value_nvlist(pair); 2549 propval = fnvlist_lookup_nvpair(attrs, 2550 ZPROP_VALUE); 2551 } 2552 2553 if (nvpair_type(propval) == DATA_TYPE_STRING) { 2554 strval = fnvpair_value_string(propval); 2555 err = dsl_prop_set_string(dsname, propname, 2556 source, strval); 2557 } else { 2558 intval = fnvpair_value_uint64(propval); 2559 err = dsl_prop_set_int(dsname, propname, source, 2560 intval); 2561 } 2562 2563 if (err != 0) { 2564 if (errlist != NULL) { 2565 fnvlist_add_int32(errlist, propname, 2566 err); 2567 } 2568 rv = err; 2569 } 2570 } 2571 } 2572 nvlist_free(genericnvl); 2573 nvlist_free(retrynvl); 2574 2575 return (rv); 2576 } 2577 2578 /* 2579 * Check that all the properties are valid user properties. 2580 */ 2581 static int 2582 zfs_check_userprops(const char *fsname, nvlist_t *nvl) 2583 { 2584 nvpair_t *pair = NULL; 2585 int error = 0; 2586 2587 while ((pair = nvlist_next_nvpair(nvl, pair)) != NULL) { 2588 const char *propname = nvpair_name(pair); 2589 char *valstr; 2590 2591 if (!zfs_prop_user(propname) || 2592 nvpair_type(pair) != DATA_TYPE_STRING) 2593 return (SET_ERROR(EINVAL)); 2594 2595 if (error = zfs_secpolicy_write_perms(fsname, 2596 ZFS_DELEG_PERM_USERPROP, CRED())) 2597 return (error); 2598 2599 if (strlen(propname) >= ZAP_MAXNAMELEN) 2600 return (SET_ERROR(ENAMETOOLONG)); 2601 2602 VERIFY(nvpair_value_string(pair, &valstr) == 0); 2603 if (strlen(valstr) >= ZAP_MAXVALUELEN) 2604 return (E2BIG); 2605 } 2606 return (0); 2607 } 2608 2609 static void 2610 props_skip(nvlist_t *props, nvlist_t *skipped, nvlist_t **newprops) 2611 { 2612 nvpair_t *pair; 2613 2614 VERIFY(nvlist_alloc(newprops, NV_UNIQUE_NAME, KM_SLEEP) == 0); 2615 2616 pair = NULL; 2617 while ((pair = nvlist_next_nvpair(props, pair)) != NULL) { 2618 if (nvlist_exists(skipped, nvpair_name(pair))) 2619 continue; 2620 2621 VERIFY(nvlist_add_nvpair(*newprops, pair) == 0); 2622 } 2623 } 2624 2625 static int 2626 clear_received_props(const char *dsname, nvlist_t *props, 2627 nvlist_t *skipped) 2628 { 2629 int err = 0; 2630 nvlist_t *cleared_props = NULL; 2631 props_skip(props, skipped, &cleared_props); 2632 if (!nvlist_empty(cleared_props)) { 2633 /* 2634 * Acts on local properties until the dataset has received 2635 * properties at least once on or after SPA_VERSION_RECVD_PROPS. 2636 */ 2637 zprop_source_t flags = (ZPROP_SRC_NONE | 2638 (dsl_prop_get_hasrecvd(dsname) ? ZPROP_SRC_RECEIVED : 0)); 2639 err = zfs_set_prop_nvlist(dsname, flags, cleared_props, NULL); 2640 } 2641 nvlist_free(cleared_props); 2642 return (err); 2643 } 2644 2645 /* 2646 * inputs: 2647 * zc_name name of filesystem 2648 * zc_value name of property to set 2649 * zc_nvlist_src{_size} nvlist of properties to apply 2650 * zc_cookie received properties flag 2651 * 2652 * outputs: 2653 * zc_nvlist_dst{_size} error for each unapplied received property 2654 */ 2655 static int 2656 zfs_ioc_set_prop(zfs_cmd_t *zc) 2657 { 2658 nvlist_t *nvl; 2659 boolean_t received = zc->zc_cookie; 2660 zprop_source_t source = (received ? ZPROP_SRC_RECEIVED : 2661 ZPROP_SRC_LOCAL); 2662 nvlist_t *errors; 2663 int error; 2664 2665 if ((error = get_nvlist(zc->zc_nvlist_src, zc->zc_nvlist_src_size, 2666 zc->zc_iflags, &nvl)) != 0) 2667 return (error); 2668 2669 if (received) { 2670 nvlist_t *origprops; 2671 2672 if (dsl_prop_get_received(zc->zc_name, &origprops) == 0) { 2673 (void) clear_received_props(zc->zc_name, 2674 origprops, nvl); 2675 nvlist_free(origprops); 2676 } 2677 2678 error = dsl_prop_set_hasrecvd(zc->zc_name); 2679 } 2680 2681 errors = fnvlist_alloc(); 2682 if (error == 0) 2683 error = zfs_set_prop_nvlist(zc->zc_name, source, nvl, errors); 2684 2685 if (zc->zc_nvlist_dst != NULL && errors != NULL) { 2686 (void) put_nvlist(zc, errors); 2687 } 2688 2689 nvlist_free(errors); 2690 nvlist_free(nvl); 2691 return (error); 2692 } 2693 2694 /* 2695 * inputs: 2696 * zc_name name of filesystem 2697 * zc_value name of property to inherit 2698 * zc_cookie revert to received value if TRUE 2699 * 2700 * outputs: none 2701 */ 2702 static int 2703 zfs_ioc_inherit_prop(zfs_cmd_t *zc) 2704 { 2705 const char *propname = zc->zc_value; 2706 zfs_prop_t prop = zfs_name_to_prop(propname); 2707 boolean_t received = zc->zc_cookie; 2708 zprop_source_t source = (received 2709 ? ZPROP_SRC_NONE /* revert to received value, if any */ 2710 : ZPROP_SRC_INHERITED); /* explicitly inherit */ 2711 2712 if (received) { 2713 nvlist_t *dummy; 2714 nvpair_t *pair; 2715 zprop_type_t type; 2716 int err; 2717 2718 /* 2719 * zfs_prop_set_special() expects properties in the form of an 2720 * nvpair with type info. 2721 */ 2722 if (prop == ZPROP_INVAL) { 2723 if (!zfs_prop_user(propname)) 2724 return (SET_ERROR(EINVAL)); 2725 2726 type = PROP_TYPE_STRING; 2727 } else if (prop == ZFS_PROP_VOLSIZE || 2728 prop == ZFS_PROP_VERSION) { 2729 return (SET_ERROR(EINVAL)); 2730 } else { 2731 type = zfs_prop_get_type(prop); 2732 } 2733 2734 VERIFY(nvlist_alloc(&dummy, NV_UNIQUE_NAME, KM_SLEEP) == 0); 2735 2736 switch (type) { 2737 case PROP_TYPE_STRING: 2738 VERIFY(0 == nvlist_add_string(dummy, propname, "")); 2739 break; 2740 case PROP_TYPE_NUMBER: 2741 case PROP_TYPE_INDEX: 2742 VERIFY(0 == nvlist_add_uint64(dummy, propname, 0)); 2743 break; 2744 default: 2745 nvlist_free(dummy); 2746 return (SET_ERROR(EINVAL)); 2747 } 2748 2749 pair = nvlist_next_nvpair(dummy, NULL); 2750 err = zfs_prop_set_special(zc->zc_name, source, pair); 2751 nvlist_free(dummy); 2752 if (err != -1) 2753 return (err); /* special property already handled */ 2754 } else { 2755 /* 2756 * Only check this in the non-received case. We want to allow 2757 * 'inherit -S' to revert non-inheritable properties like quota 2758 * and reservation to the received or default values even though 2759 * they are not considered inheritable. 2760 */ 2761 if (prop != ZPROP_INVAL && !zfs_prop_inheritable(prop)) 2762 return (SET_ERROR(EINVAL)); 2763 } 2764 2765 /* property name has been validated by zfs_secpolicy_inherit_prop() */ 2766 return (dsl_prop_inherit(zc->zc_name, zc->zc_value, source)); 2767 } 2768 2769 static int 2770 zfs_ioc_pool_set_props(zfs_cmd_t *zc) 2771 { 2772 nvlist_t *props; 2773 spa_t *spa; 2774 int error; 2775 nvpair_t *pair; 2776 2777 if (error = get_nvlist(zc->zc_nvlist_src, zc->zc_nvlist_src_size, 2778 zc->zc_iflags, &props)) 2779 return (error); 2780 2781 /* 2782 * If the only property is the configfile, then just do a spa_lookup() 2783 * to handle the faulted case. 2784 */ 2785 pair = nvlist_next_nvpair(props, NULL); 2786 if (pair != NULL && strcmp(nvpair_name(pair), 2787 zpool_prop_to_name(ZPOOL_PROP_CACHEFILE)) == 0 && 2788 nvlist_next_nvpair(props, pair) == NULL) { 2789 mutex_enter(&spa_namespace_lock); 2790 if ((spa = spa_lookup(zc->zc_name)) != NULL) { 2791 spa_configfile_set(spa, props, B_FALSE); 2792 spa_config_sync(spa, B_FALSE, B_TRUE); 2793 } 2794 mutex_exit(&spa_namespace_lock); 2795 if (spa != NULL) { 2796 nvlist_free(props); 2797 return (0); 2798 } 2799 } 2800 2801 if ((error = spa_open(zc->zc_name, &spa, FTAG)) != 0) { 2802 nvlist_free(props); 2803 return (error); 2804 } 2805 2806 error = spa_prop_set(spa, props); 2807 2808 nvlist_free(props); 2809 spa_close(spa, FTAG); 2810 2811 return (error); 2812 } 2813 2814 static int 2815 zfs_ioc_pool_get_props(zfs_cmd_t *zc) 2816 { 2817 spa_t *spa; 2818 int error; 2819 nvlist_t *nvp = NULL; 2820 2821 if ((error = spa_open(zc->zc_name, &spa, FTAG)) != 0) { 2822 /* 2823 * If the pool is faulted, there may be properties we can still 2824 * get (such as altroot and cachefile), so attempt to get them 2825 * anyway. 2826 */ 2827 mutex_enter(&spa_namespace_lock); 2828 if ((spa = spa_lookup(zc->zc_name)) != NULL) 2829 error = spa_prop_get(spa, &nvp); 2830 mutex_exit(&spa_namespace_lock); 2831 } else { 2832 error = spa_prop_get(spa, &nvp); 2833 spa_close(spa, FTAG); 2834 } 2835 2836 if (error == 0 && zc->zc_nvlist_dst != NULL) 2837 error = put_nvlist(zc, nvp); 2838 else 2839 error = SET_ERROR(EFAULT); 2840 2841 nvlist_free(nvp); 2842 return (error); 2843 } 2844 2845 /* 2846 * inputs: 2847 * zc_name name of filesystem 2848 * zc_nvlist_src{_size} nvlist of delegated permissions 2849 * zc_perm_action allow/unallow flag 2850 * 2851 * outputs: none 2852 */ 2853 static int 2854 zfs_ioc_set_fsacl(zfs_cmd_t *zc) 2855 { 2856 int error; 2857 nvlist_t *fsaclnv = NULL; 2858 2859 if ((error = get_nvlist(zc->zc_nvlist_src, zc->zc_nvlist_src_size, 2860 zc->zc_iflags, &fsaclnv)) != 0) 2861 return (error); 2862 2863 /* 2864 * Verify nvlist is constructed correctly 2865 */ 2866 if ((error = zfs_deleg_verify_nvlist(fsaclnv)) != 0) { 2867 nvlist_free(fsaclnv); 2868 return (SET_ERROR(EINVAL)); 2869 } 2870 2871 /* 2872 * If we don't have PRIV_SYS_MOUNT, then validate 2873 * that user is allowed to hand out each permission in 2874 * the nvlist(s) 2875 */ 2876 2877 error = secpolicy_zfs(CRED()); 2878 if (error != 0) { 2879 if (zc->zc_perm_action == B_FALSE) { 2880 error = dsl_deleg_can_allow(zc->zc_name, 2881 fsaclnv, CRED()); 2882 } else { 2883 error = dsl_deleg_can_unallow(zc->zc_name, 2884 fsaclnv, CRED()); 2885 } 2886 } 2887 2888 if (error == 0) 2889 error = dsl_deleg_set(zc->zc_name, fsaclnv, zc->zc_perm_action); 2890 2891 nvlist_free(fsaclnv); 2892 return (error); 2893 } 2894 2895 /* 2896 * inputs: 2897 * zc_name name of filesystem 2898 * 2899 * outputs: 2900 * zc_nvlist_src{_size} nvlist of delegated permissions 2901 */ 2902 static int 2903 zfs_ioc_get_fsacl(zfs_cmd_t *zc) 2904 { 2905 nvlist_t *nvp; 2906 int error; 2907 2908 if ((error = dsl_deleg_get(zc->zc_name, &nvp)) == 0) { 2909 error = put_nvlist(zc, nvp); 2910 nvlist_free(nvp); 2911 } 2912 2913 return (error); 2914 } 2915 2916 /* 2917 * Search the vfs list for a specified resource. Returns a pointer to it 2918 * or NULL if no suitable entry is found. The caller of this routine 2919 * is responsible for releasing the returned vfs pointer. 2920 */ 2921 static vfs_t * 2922 zfs_get_vfs(const char *resource) 2923 { 2924 struct vfs *vfsp; 2925 struct vfs *vfs_found = NULL; 2926 2927 vfs_list_read_lock(); 2928 vfsp = rootvfs; 2929 do { 2930 if (strcmp(refstr_value(vfsp->vfs_resource), resource) == 0) { 2931 VFS_HOLD(vfsp); 2932 vfs_found = vfsp; 2933 break; 2934 } 2935 vfsp = vfsp->vfs_next; 2936 } while (vfsp != rootvfs); 2937 vfs_list_unlock(); 2938 return (vfs_found); 2939 } 2940 2941 /* ARGSUSED */ 2942 static void 2943 zfs_create_cb(objset_t *os, void *arg, cred_t *cr, dmu_tx_t *tx) 2944 { 2945 zfs_creat_t *zct = arg; 2946 2947 zfs_create_fs(os, cr, zct->zct_zplprops, tx); 2948 } 2949 2950 #define ZFS_PROP_UNDEFINED ((uint64_t)-1) 2951 2952 /* 2953 * inputs: 2954 * os parent objset pointer (NULL if root fs) 2955 * fuids_ok fuids allowed in this version of the spa? 2956 * sa_ok SAs allowed in this version of the spa? 2957 * createprops list of properties requested by creator 2958 * 2959 * outputs: 2960 * zplprops values for the zplprops we attach to the master node object 2961 * is_ci true if requested file system will be purely case-insensitive 2962 * 2963 * Determine the settings for utf8only, normalization and 2964 * casesensitivity. Specific values may have been requested by the 2965 * creator and/or we can inherit values from the parent dataset. If 2966 * the file system is of too early a vintage, a creator can not 2967 * request settings for these properties, even if the requested 2968 * setting is the default value. We don't actually want to create dsl 2969 * properties for these, so remove them from the source nvlist after 2970 * processing. 2971 */ 2972 static int 2973 zfs_fill_zplprops_impl(objset_t *os, uint64_t zplver, 2974 boolean_t fuids_ok, boolean_t sa_ok, nvlist_t *createprops, 2975 nvlist_t *zplprops, boolean_t *is_ci) 2976 { 2977 uint64_t sense = ZFS_PROP_UNDEFINED; 2978 uint64_t norm = ZFS_PROP_UNDEFINED; 2979 uint64_t u8 = ZFS_PROP_UNDEFINED; 2980 2981 ASSERT(zplprops != NULL); 2982 2983 /* 2984 * Pull out creator prop choices, if any. 2985 */ 2986 if (createprops) { 2987 (void) nvlist_lookup_uint64(createprops, 2988 zfs_prop_to_name(ZFS_PROP_VERSION), &zplver); 2989 (void) nvlist_lookup_uint64(createprops, 2990 zfs_prop_to_name(ZFS_PROP_NORMALIZE), &norm); 2991 (void) nvlist_remove_all(createprops, 2992 zfs_prop_to_name(ZFS_PROP_NORMALIZE)); 2993 (void) nvlist_lookup_uint64(createprops, 2994 zfs_prop_to_name(ZFS_PROP_UTF8ONLY), &u8); 2995 (void) nvlist_remove_all(createprops, 2996 zfs_prop_to_name(ZFS_PROP_UTF8ONLY)); 2997 (void) nvlist_lookup_uint64(createprops, 2998 zfs_prop_to_name(ZFS_PROP_CASE), &sense); 2999 (void) nvlist_remove_all(createprops, 3000 zfs_prop_to_name(ZFS_PROP_CASE)); 3001 } 3002 3003 /* 3004 * If the zpl version requested is whacky or the file system 3005 * or pool is version is too "young" to support normalization 3006 * and the creator tried to set a value for one of the props, 3007 * error out. 3008 */ 3009 if ((zplver < ZPL_VERSION_INITIAL || zplver > ZPL_VERSION) || 3010 (zplver >= ZPL_VERSION_FUID && !fuids_ok) || 3011 (zplver >= ZPL_VERSION_SA && !sa_ok) || 3012 (zplver < ZPL_VERSION_NORMALIZATION && 3013 (norm != ZFS_PROP_UNDEFINED || u8 != ZFS_PROP_UNDEFINED || 3014 sense != ZFS_PROP_UNDEFINED))) 3015 return (SET_ERROR(ENOTSUP)); 3016 3017 /* 3018 * Put the version in the zplprops 3019 */ 3020 VERIFY(nvlist_add_uint64(zplprops, 3021 zfs_prop_to_name(ZFS_PROP_VERSION), zplver) == 0); 3022 3023 if (norm == ZFS_PROP_UNDEFINED) 3024 VERIFY(zfs_get_zplprop(os, ZFS_PROP_NORMALIZE, &norm) == 0); 3025 VERIFY(nvlist_add_uint64(zplprops, 3026 zfs_prop_to_name(ZFS_PROP_NORMALIZE), norm) == 0); 3027 3028 /* 3029 * If we're normalizing, names must always be valid UTF-8 strings. 3030 */ 3031 if (norm) 3032 u8 = 1; 3033 if (u8 == ZFS_PROP_UNDEFINED) 3034 VERIFY(zfs_get_zplprop(os, ZFS_PROP_UTF8ONLY, &u8) == 0); 3035 VERIFY(nvlist_add_uint64(zplprops, 3036 zfs_prop_to_name(ZFS_PROP_UTF8ONLY), u8) == 0); 3037 3038 if (sense == ZFS_PROP_UNDEFINED) 3039 VERIFY(zfs_get_zplprop(os, ZFS_PROP_CASE, &sense) == 0); 3040 VERIFY(nvlist_add_uint64(zplprops, 3041 zfs_prop_to_name(ZFS_PROP_CASE), sense) == 0); 3042 3043 if (is_ci) 3044 *is_ci = (sense == ZFS_CASE_INSENSITIVE); 3045 3046 return (0); 3047 } 3048 3049 static int 3050 zfs_fill_zplprops(const char *dataset, nvlist_t *createprops, 3051 nvlist_t *zplprops, boolean_t *is_ci) 3052 { 3053 boolean_t fuids_ok, sa_ok; 3054 uint64_t zplver = ZPL_VERSION; 3055 objset_t *os = NULL; 3056 char parentname[MAXNAMELEN]; 3057 char *cp; 3058 spa_t *spa; 3059 uint64_t spa_vers; 3060 int error; 3061 3062 (void) strlcpy(parentname, dataset, sizeof (parentname)); 3063 cp = strrchr(parentname, '/'); 3064 ASSERT(cp != NULL); 3065 cp[0] = '\0'; 3066 3067 if ((error = spa_open(dataset, &spa, FTAG)) != 0) 3068 return (error); 3069 3070 spa_vers = spa_version(spa); 3071 spa_close(spa, FTAG); 3072 3073 zplver = zfs_zpl_version_map(spa_vers); 3074 fuids_ok = (zplver >= ZPL_VERSION_FUID); 3075 sa_ok = (zplver >= ZPL_VERSION_SA); 3076 3077 /* 3078 * Open parent object set so we can inherit zplprop values. 3079 */ 3080 if ((error = dmu_objset_hold(parentname, FTAG, &os)) != 0) 3081 return (error); 3082 3083 error = zfs_fill_zplprops_impl(os, zplver, fuids_ok, sa_ok, createprops, 3084 zplprops, is_ci); 3085 dmu_objset_rele(os, FTAG); 3086 return (error); 3087 } 3088 3089 static int 3090 zfs_fill_zplprops_root(uint64_t spa_vers, nvlist_t *createprops, 3091 nvlist_t *zplprops, boolean_t *is_ci) 3092 { 3093 boolean_t fuids_ok; 3094 boolean_t sa_ok; 3095 uint64_t zplver = ZPL_VERSION; 3096 int error; 3097 3098 zplver = zfs_zpl_version_map(spa_vers); 3099 fuids_ok = (zplver >= ZPL_VERSION_FUID); 3100 sa_ok = (zplver >= ZPL_VERSION_SA); 3101 3102 error = zfs_fill_zplprops_impl(NULL, zplver, fuids_ok, sa_ok, 3103 createprops, zplprops, is_ci); 3104 return (error); 3105 } 3106 3107 /* 3108 * innvl: { 3109 * "type" -> dmu_objset_type_t (int32) 3110 * (optional) "props" -> { prop -> value } 3111 * } 3112 * 3113 * outnvl: propname -> error code (int32) 3114 */ 3115 static int 3116 zfs_ioc_create(const char *fsname, nvlist_t *innvl, nvlist_t *outnvl) 3117 { 3118 int error = 0; 3119 zfs_creat_t zct = { 0 }; 3120 nvlist_t *nvprops = NULL; 3121 void (*cbfunc)(objset_t *os, void *arg, cred_t *cr, dmu_tx_t *tx); 3122 int32_t type32; 3123 dmu_objset_type_t type; 3124 boolean_t is_insensitive = B_FALSE; 3125 3126 if (nvlist_lookup_int32(innvl, "type", &type32) != 0) 3127 return (SET_ERROR(EINVAL)); 3128 type = type32; 3129 (void) nvlist_lookup_nvlist(innvl, "props", &nvprops); 3130 3131 switch (type) { 3132 case DMU_OST_ZFS: 3133 cbfunc = zfs_create_cb; 3134 break; 3135 3136 case DMU_OST_ZVOL: 3137 cbfunc = zvol_create_cb; 3138 break; 3139 3140 default: 3141 cbfunc = NULL; 3142 break; 3143 } 3144 if (strchr(fsname, '@') || 3145 strchr(fsname, '%')) 3146 return (SET_ERROR(EINVAL)); 3147 3148 zct.zct_props = nvprops; 3149 3150 if (cbfunc == NULL) 3151 return (SET_ERROR(EINVAL)); 3152 3153 if (type == DMU_OST_ZVOL) { 3154 uint64_t volsize, volblocksize; 3155 3156 if (nvprops == NULL) 3157 return (SET_ERROR(EINVAL)); 3158 if (nvlist_lookup_uint64(nvprops, 3159 zfs_prop_to_name(ZFS_PROP_VOLSIZE), &volsize) != 0) 3160 return (SET_ERROR(EINVAL)); 3161 3162 if ((error = nvlist_lookup_uint64(nvprops, 3163 zfs_prop_to_name(ZFS_PROP_VOLBLOCKSIZE), 3164 &volblocksize)) != 0 && error != ENOENT) 3165 return (SET_ERROR(EINVAL)); 3166 3167 if (error != 0) 3168 volblocksize = zfs_prop_default_numeric( 3169 ZFS_PROP_VOLBLOCKSIZE); 3170 3171 if ((error = zvol_check_volblocksize( 3172 volblocksize)) != 0 || 3173 (error = zvol_check_volsize(volsize, 3174 volblocksize)) != 0) 3175 return (error); 3176 } else if (type == DMU_OST_ZFS) { 3177 int error; 3178 3179 /* 3180 * We have to have normalization and 3181 * case-folding flags correct when we do the 3182 * file system creation, so go figure them out 3183 * now. 3184 */ 3185 VERIFY(nvlist_alloc(&zct.zct_zplprops, 3186 NV_UNIQUE_NAME, KM_SLEEP) == 0); 3187 error = zfs_fill_zplprops(fsname, nvprops, 3188 zct.zct_zplprops, &is_insensitive); 3189 if (error != 0) { 3190 nvlist_free(zct.zct_zplprops); 3191 return (error); 3192 } 3193 } 3194 3195 error = dmu_objset_create(fsname, type, 3196 is_insensitive ? DS_FLAG_CI_DATASET : 0, cbfunc, &zct); 3197 nvlist_free(zct.zct_zplprops); 3198 3199 /* 3200 * It would be nice to do this atomically. 3201 */ 3202 if (error == 0) { 3203 error = zfs_set_prop_nvlist(fsname, ZPROP_SRC_LOCAL, 3204 nvprops, outnvl); 3205 if (error != 0) 3206 (void) dsl_destroy_head(fsname); 3207 } 3208 return (error); 3209 } 3210 3211 /* 3212 * innvl: { 3213 * "origin" -> name of origin snapshot 3214 * (optional) "props" -> { prop -> value } 3215 * } 3216 * 3217 * outnvl: propname -> error code (int32) 3218 */ 3219 static int 3220 zfs_ioc_clone(const char *fsname, nvlist_t *innvl, nvlist_t *outnvl) 3221 { 3222 int error = 0; 3223 nvlist_t *nvprops = NULL; 3224 char *origin_name; 3225 3226 if (nvlist_lookup_string(innvl, "origin", &origin_name) != 0) 3227 return (SET_ERROR(EINVAL)); 3228 (void) nvlist_lookup_nvlist(innvl, "props", &nvprops); 3229 3230 if (strchr(fsname, '@') || 3231 strchr(fsname, '%')) 3232 return (SET_ERROR(EINVAL)); 3233 3234 if (dataset_namecheck(origin_name, NULL, NULL) != 0) 3235 return (SET_ERROR(EINVAL)); 3236 error = dmu_objset_clone(fsname, origin_name); 3237 if (error != 0) 3238 return (error); 3239 3240 /* 3241 * It would be nice to do this atomically. 3242 */ 3243 if (error == 0) { 3244 error = zfs_set_prop_nvlist(fsname, ZPROP_SRC_LOCAL, 3245 nvprops, outnvl); 3246 if (error != 0) 3247 (void) dsl_destroy_head(fsname); 3248 } 3249 return (error); 3250 } 3251 3252 /* 3253 * innvl: { 3254 * "snaps" -> { snapshot1, snapshot2 } 3255 * (optional) "props" -> { prop -> value (string) } 3256 * } 3257 * 3258 * outnvl: snapshot -> error code (int32) 3259 */ 3260 static int 3261 zfs_ioc_snapshot(const char *poolname, nvlist_t *innvl, nvlist_t *outnvl) 3262 { 3263 nvlist_t *snaps; 3264 nvlist_t *props = NULL; 3265 int error, poollen; 3266 nvpair_t *pair; 3267 3268 (void) nvlist_lookup_nvlist(innvl, "props", &props); 3269 if ((error = zfs_check_userprops(poolname, props)) != 0) 3270 return (error); 3271 3272 if (!nvlist_empty(props) && 3273 zfs_earlier_version(poolname, SPA_VERSION_SNAP_PROPS)) 3274 return (SET_ERROR(ENOTSUP)); 3275 3276 if (nvlist_lookup_nvlist(innvl, "snaps", &snaps) != 0) 3277 return (SET_ERROR(EINVAL)); 3278 poollen = strlen(poolname); 3279 for (pair = nvlist_next_nvpair(snaps, NULL); pair != NULL; 3280 pair = nvlist_next_nvpair(snaps, pair)) { 3281 const char *name = nvpair_name(pair); 3282 const char *cp = strchr(name, '@'); 3283 3284 /* 3285 * The snap name must contain an @, and the part after it must 3286 * contain only valid characters. 3287 */ 3288 if (cp == NULL || snapshot_namecheck(cp + 1, NULL, NULL) != 0) 3289 return (SET_ERROR(EINVAL)); 3290 3291 /* 3292 * The snap must be in the specified pool. 3293 */ 3294 if (strncmp(name, poolname, poollen) != 0 || 3295 (name[poollen] != '/' && name[poollen] != '@')) 3296 return (SET_ERROR(EXDEV)); 3297 3298 /* This must be the only snap of this fs. */ 3299 for (nvpair_t *pair2 = nvlist_next_nvpair(snaps, pair); 3300 pair2 != NULL; pair2 = nvlist_next_nvpair(snaps, pair2)) { 3301 if (strncmp(name, nvpair_name(pair2), cp - name + 1) 3302 == 0) { 3303 return (SET_ERROR(EXDEV)); 3304 } 3305 } 3306 } 3307 3308 error = dsl_dataset_snapshot(snaps, props, outnvl); 3309 return (error); 3310 } 3311 3312 /* 3313 * innvl: "message" -> string 3314 */ 3315 /* ARGSUSED */ 3316 static int 3317 zfs_ioc_log_history(const char *unused, nvlist_t *innvl, nvlist_t *outnvl) 3318 { 3319 char *message; 3320 spa_t *spa; 3321 int error; 3322 char *poolname; 3323 3324 /* 3325 * The poolname in the ioctl is not set, we get it from the TSD, 3326 * which was set at the end of the last successful ioctl that allows 3327 * logging. The secpolicy func already checked that it is set. 3328 * Only one log ioctl is allowed after each successful ioctl, so 3329 * we clear the TSD here. 3330 */ 3331 poolname = tsd_get(zfs_allow_log_key); 3332 (void) tsd_set(zfs_allow_log_key, NULL); 3333 error = spa_open(poolname, &spa, FTAG); 3334 strfree(poolname); 3335 if (error != 0) 3336 return (error); 3337 3338 if (nvlist_lookup_string(innvl, "message", &message) != 0) { 3339 spa_close(spa, FTAG); 3340 return (SET_ERROR(EINVAL)); 3341 } 3342 3343 if (spa_version(spa) < SPA_VERSION_ZPOOL_HISTORY) { 3344 spa_close(spa, FTAG); 3345 return (SET_ERROR(ENOTSUP)); 3346 } 3347 3348 error = spa_history_log(spa, message); 3349 spa_close(spa, FTAG); 3350 return (error); 3351 } 3352 3353 /* 3354 * The dp_config_rwlock must not be held when calling this, because the 3355 * unmount may need to write out data. 3356 * 3357 * This function is best-effort. Callers must deal gracefully if it 3358 * remains mounted (or is remounted after this call). 3359 * 3360 * Returns 0 if the argument is not a snapshot, or it is not currently a 3361 * filesystem, or we were able to unmount it. Returns error code otherwise. 3362 */ 3363 int 3364 zfs_unmount_snap(const char *snapname) 3365 { 3366 vfs_t *vfsp; 3367 zfsvfs_t *zfsvfs; 3368 int err; 3369 3370 if (strchr(snapname, '@') == NULL) 3371 return (0); 3372 3373 vfsp = zfs_get_vfs(snapname); 3374 if (vfsp == NULL) 3375 return (0); 3376 3377 zfsvfs = vfsp->vfs_data; 3378 ASSERT(!dsl_pool_config_held(dmu_objset_pool(zfsvfs->z_os))); 3379 3380 err = vn_vfswlock(vfsp->vfs_vnodecovered); 3381 VFS_RELE(vfsp); 3382 if (err != 0) 3383 return (SET_ERROR(err)); 3384 3385 /* 3386 * Always force the unmount for snapshots. 3387 */ 3388 (void) dounmount(vfsp, MS_FORCE, kcred); 3389 return (0); 3390 } 3391 3392 /* ARGSUSED */ 3393 static int 3394 zfs_unmount_snap_cb(const char *snapname, void *arg) 3395 { 3396 return (zfs_unmount_snap(snapname)); 3397 } 3398 3399 /* 3400 * When a clone is destroyed, its origin may also need to be destroyed, 3401 * in which case it must be unmounted. This routine will do that unmount 3402 * if necessary. 3403 */ 3404 void 3405 zfs_destroy_unmount_origin(const char *fsname) 3406 { 3407 int error; 3408 objset_t *os; 3409 dsl_dataset_t *ds; 3410 3411 error = dmu_objset_hold(fsname, FTAG, &os); 3412 if (error != 0) 3413 return; 3414 ds = dmu_objset_ds(os); 3415 if (dsl_dir_is_clone(ds->ds_dir) && DS_IS_DEFER_DESTROY(ds->ds_prev)) { 3416 char originname[MAXNAMELEN]; 3417 dsl_dataset_name(ds->ds_prev, originname); 3418 dmu_objset_rele(os, FTAG); 3419 (void) zfs_unmount_snap(originname); 3420 } else { 3421 dmu_objset_rele(os, FTAG); 3422 } 3423 } 3424 3425 /* 3426 * innvl: { 3427 * "snaps" -> { snapshot1, snapshot2 } 3428 * (optional boolean) "defer" 3429 * } 3430 * 3431 * outnvl: snapshot -> error code (int32) 3432 * 3433 */ 3434 static int 3435 zfs_ioc_destroy_snaps(const char *poolname, nvlist_t *innvl, nvlist_t *outnvl) 3436 { 3437 int error, poollen; 3438 nvlist_t *snaps; 3439 nvpair_t *pair; 3440 boolean_t defer; 3441 3442 if (nvlist_lookup_nvlist(innvl, "snaps", &snaps) != 0) 3443 return (SET_ERROR(EINVAL)); 3444 defer = nvlist_exists(innvl, "defer"); 3445 3446 poollen = strlen(poolname); 3447 for (pair = nvlist_next_nvpair(snaps, NULL); pair != NULL; 3448 pair = nvlist_next_nvpair(snaps, pair)) { 3449 const char *name = nvpair_name(pair); 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 error = zfs_unmount_snap(name); 3459 if (error != 0) 3460 return (error); 3461 } 3462 3463 return (dsl_destroy_snapshots_nvl(snaps, defer, outnvl)); 3464 } 3465 3466 /* 3467 * inputs: 3468 * zc_name name of dataset to destroy 3469 * zc_objset_type type of objset 3470 * zc_defer_destroy mark for deferred destroy 3471 * 3472 * outputs: none 3473 */ 3474 static int 3475 zfs_ioc_destroy(zfs_cmd_t *zc) 3476 { 3477 int err; 3478 3479 if (zc->zc_objset_type == DMU_OST_ZFS) { 3480 err = zfs_unmount_snap(zc->zc_name); 3481 if (err != 0) 3482 return (err); 3483 } 3484 3485 if (strchr(zc->zc_name, '@')) 3486 err = dsl_destroy_snapshot(zc->zc_name, zc->zc_defer_destroy); 3487 else 3488 err = dsl_destroy_head(zc->zc_name); 3489 if (zc->zc_objset_type == DMU_OST_ZVOL && err == 0) 3490 (void) zvol_remove_minor(zc->zc_name); 3491 return (err); 3492 } 3493 3494 /* 3495 * inputs: 3496 * zc_name name of dataset to rollback (to most recent snapshot) 3497 * 3498 * outputs: none 3499 */ 3500 static int 3501 zfs_ioc_rollback(zfs_cmd_t *zc) 3502 { 3503 zfsvfs_t *zfsvfs; 3504 int error; 3505 3506 if (getzfsvfs(zc->zc_name, &zfsvfs) == 0) { 3507 error = zfs_suspend_fs(zfsvfs); 3508 if (error == 0) { 3509 int resume_err; 3510 3511 error = dsl_dataset_rollback(zc->zc_name); 3512 resume_err = zfs_resume_fs(zfsvfs, zc->zc_name); 3513 error = error ? error : resume_err; 3514 } 3515 VFS_RELE(zfsvfs->z_vfs); 3516 } else { 3517 error = dsl_dataset_rollback(zc->zc_name); 3518 } 3519 return (error); 3520 } 3521 3522 static int 3523 recursive_unmount(const char *fsname, void *arg) 3524 { 3525 const char *snapname = arg; 3526 char fullname[MAXNAMELEN]; 3527 3528 (void) snprintf(fullname, sizeof (fullname), "%s@%s", fsname, snapname); 3529 return (zfs_unmount_snap(fullname)); 3530 } 3531 3532 /* 3533 * inputs: 3534 * zc_name old name of dataset 3535 * zc_value new name of dataset 3536 * zc_cookie recursive flag (only valid for snapshots) 3537 * 3538 * outputs: none 3539 */ 3540 static int 3541 zfs_ioc_rename(zfs_cmd_t *zc) 3542 { 3543 boolean_t recursive = zc->zc_cookie & 1; 3544 char *at; 3545 3546 zc->zc_value[sizeof (zc->zc_value) - 1] = '\0'; 3547 if (dataset_namecheck(zc->zc_value, NULL, NULL) != 0 || 3548 strchr(zc->zc_value, '%')) 3549 return (SET_ERROR(EINVAL)); 3550 3551 at = strchr(zc->zc_name, '@'); 3552 if (at != NULL) { 3553 /* snaps must be in same fs */ 3554 if (strncmp(zc->zc_name, zc->zc_value, at - zc->zc_name + 1)) 3555 return (SET_ERROR(EXDEV)); 3556 *at = '\0'; 3557 if (zc->zc_objset_type == DMU_OST_ZFS) { 3558 int error = dmu_objset_find(zc->zc_name, 3559 recursive_unmount, at + 1, 3560 recursive ? DS_FIND_CHILDREN : 0); 3561 if (error != 0) 3562 return (error); 3563 } 3564 return (dsl_dataset_rename_snapshot(zc->zc_name, 3565 at + 1, strchr(zc->zc_value, '@') + 1, recursive)); 3566 } else { 3567 if (zc->zc_objset_type == DMU_OST_ZVOL) 3568 (void) zvol_remove_minor(zc->zc_name); 3569 return (dsl_dir_rename(zc->zc_name, zc->zc_value)); 3570 } 3571 } 3572 3573 static int 3574 zfs_check_settable(const char *dsname, nvpair_t *pair, cred_t *cr) 3575 { 3576 const char *propname = nvpair_name(pair); 3577 boolean_t issnap = (strchr(dsname, '@') != NULL); 3578 zfs_prop_t prop = zfs_name_to_prop(propname); 3579 uint64_t intval; 3580 int err; 3581 3582 if (prop == ZPROP_INVAL) { 3583 if (zfs_prop_user(propname)) { 3584 if (err = zfs_secpolicy_write_perms(dsname, 3585 ZFS_DELEG_PERM_USERPROP, cr)) 3586 return (err); 3587 return (0); 3588 } 3589 3590 if (!issnap && zfs_prop_userquota(propname)) { 3591 const char *perm = NULL; 3592 const char *uq_prefix = 3593 zfs_userquota_prop_prefixes[ZFS_PROP_USERQUOTA]; 3594 const char *gq_prefix = 3595 zfs_userquota_prop_prefixes[ZFS_PROP_GROUPQUOTA]; 3596 3597 if (strncmp(propname, uq_prefix, 3598 strlen(uq_prefix)) == 0) { 3599 perm = ZFS_DELEG_PERM_USERQUOTA; 3600 } else if (strncmp(propname, gq_prefix, 3601 strlen(gq_prefix)) == 0) { 3602 perm = ZFS_DELEG_PERM_GROUPQUOTA; 3603 } else { 3604 /* USERUSED and GROUPUSED are read-only */ 3605 return (SET_ERROR(EINVAL)); 3606 } 3607 3608 if (err = zfs_secpolicy_write_perms(dsname, perm, cr)) 3609 return (err); 3610 return (0); 3611 } 3612 3613 return (SET_ERROR(EINVAL)); 3614 } 3615 3616 if (issnap) 3617 return (SET_ERROR(EINVAL)); 3618 3619 if (nvpair_type(pair) == DATA_TYPE_NVLIST) { 3620 /* 3621 * dsl_prop_get_all_impl() returns properties in this 3622 * format. 3623 */ 3624 nvlist_t *attrs; 3625 VERIFY(nvpair_value_nvlist(pair, &attrs) == 0); 3626 VERIFY(nvlist_lookup_nvpair(attrs, ZPROP_VALUE, 3627 &pair) == 0); 3628 } 3629 3630 /* 3631 * Check that this value is valid for this pool version 3632 */ 3633 switch (prop) { 3634 case ZFS_PROP_COMPRESSION: 3635 /* 3636 * If the user specified gzip compression, make sure 3637 * the SPA supports it. We ignore any errors here since 3638 * we'll catch them later. 3639 */ 3640 if (nvpair_type(pair) == DATA_TYPE_UINT64 && 3641 nvpair_value_uint64(pair, &intval) == 0) { 3642 if (intval >= ZIO_COMPRESS_GZIP_1 && 3643 intval <= ZIO_COMPRESS_GZIP_9 && 3644 zfs_earlier_version(dsname, 3645 SPA_VERSION_GZIP_COMPRESSION)) { 3646 return (SET_ERROR(ENOTSUP)); 3647 } 3648 3649 if (intval == ZIO_COMPRESS_ZLE && 3650 zfs_earlier_version(dsname, 3651 SPA_VERSION_ZLE_COMPRESSION)) 3652 return (SET_ERROR(ENOTSUP)); 3653 3654 if (intval == ZIO_COMPRESS_LZ4) { 3655 zfeature_info_t *feature = 3656 &spa_feature_table[ 3657 SPA_FEATURE_LZ4_COMPRESS]; 3658 spa_t *spa; 3659 3660 if ((err = spa_open(dsname, &spa, FTAG)) != 0) 3661 return (err); 3662 3663 if (!spa_feature_is_enabled(spa, feature)) { 3664 spa_close(spa, FTAG); 3665 return (SET_ERROR(ENOTSUP)); 3666 } 3667 spa_close(spa, FTAG); 3668 } 3669 3670 /* 3671 * If this is a bootable dataset then 3672 * verify that the compression algorithm 3673 * is supported for booting. We must return 3674 * something other than ENOTSUP since it 3675 * implies a downrev pool version. 3676 */ 3677 if (zfs_is_bootfs(dsname) && 3678 !BOOTFS_COMPRESS_VALID(intval)) { 3679 return (SET_ERROR(ERANGE)); 3680 } 3681 } 3682 break; 3683 3684 case ZFS_PROP_COPIES: 3685 if (zfs_earlier_version(dsname, SPA_VERSION_DITTO_BLOCKS)) 3686 return (SET_ERROR(ENOTSUP)); 3687 break; 3688 3689 case ZFS_PROP_DEDUP: 3690 if (zfs_earlier_version(dsname, SPA_VERSION_DEDUP)) 3691 return (SET_ERROR(ENOTSUP)); 3692 break; 3693 3694 case ZFS_PROP_SHARESMB: 3695 if (zpl_earlier_version(dsname, ZPL_VERSION_FUID)) 3696 return (SET_ERROR(ENOTSUP)); 3697 break; 3698 3699 case ZFS_PROP_ACLINHERIT: 3700 if (nvpair_type(pair) == DATA_TYPE_UINT64 && 3701 nvpair_value_uint64(pair, &intval) == 0) { 3702 if (intval == ZFS_ACL_PASSTHROUGH_X && 3703 zfs_earlier_version(dsname, 3704 SPA_VERSION_PASSTHROUGH_X)) 3705 return (SET_ERROR(ENOTSUP)); 3706 } 3707 break; 3708 } 3709 3710 return (zfs_secpolicy_setprop(dsname, prop, pair, CRED())); 3711 } 3712 3713 /* 3714 * Checks for a race condition to make sure we don't increment a feature flag 3715 * multiple times. 3716 */ 3717 static int 3718 zfs_prop_activate_feature_check(void *arg, dmu_tx_t *tx) 3719 { 3720 spa_t *spa = dmu_tx_pool(tx)->dp_spa; 3721 zfeature_info_t *feature = arg; 3722 3723 if (!spa_feature_is_active(spa, feature)) 3724 return (0); 3725 else 3726 return (SET_ERROR(EBUSY)); 3727 } 3728 3729 /* 3730 * The callback invoked on feature activation in the sync task caused by 3731 * zfs_prop_activate_feature. 3732 */ 3733 static void 3734 zfs_prop_activate_feature_sync(void *arg, dmu_tx_t *tx) 3735 { 3736 spa_t *spa = dmu_tx_pool(tx)->dp_spa; 3737 zfeature_info_t *feature = arg; 3738 3739 spa_feature_incr(spa, feature, tx); 3740 } 3741 3742 /* 3743 * Activates a feature on a pool in response to a property setting. This 3744 * creates a new sync task which modifies the pool to reflect the feature 3745 * as being active. 3746 */ 3747 static int 3748 zfs_prop_activate_feature(spa_t *spa, zfeature_info_t *feature) 3749 { 3750 int err; 3751 3752 /* EBUSY here indicates that the feature is already active */ 3753 err = dsl_sync_task(spa_name(spa), 3754 zfs_prop_activate_feature_check, zfs_prop_activate_feature_sync, 3755 feature, 2); 3756 3757 if (err != 0 && err != EBUSY) 3758 return (err); 3759 else 3760 return (0); 3761 } 3762 3763 /* 3764 * Removes properties from the given props list that fail permission checks 3765 * needed to clear them and to restore them in case of a receive error. For each 3766 * property, make sure we have both set and inherit permissions. 3767 * 3768 * Returns the first error encountered if any permission checks fail. If the 3769 * caller provides a non-NULL errlist, it also gives the complete list of names 3770 * of all the properties that failed a permission check along with the 3771 * corresponding error numbers. The caller is responsible for freeing the 3772 * returned errlist. 3773 * 3774 * If every property checks out successfully, zero is returned and the list 3775 * pointed at by errlist is NULL. 3776 */ 3777 static int 3778 zfs_check_clearable(char *dataset, nvlist_t *props, nvlist_t **errlist) 3779 { 3780 zfs_cmd_t *zc; 3781 nvpair_t *pair, *next_pair; 3782 nvlist_t *errors; 3783 int err, rv = 0; 3784 3785 if (props == NULL) 3786 return (0); 3787 3788 VERIFY(nvlist_alloc(&errors, NV_UNIQUE_NAME, KM_SLEEP) == 0); 3789 3790 zc = kmem_alloc(sizeof (zfs_cmd_t), KM_SLEEP); 3791 (void) strcpy(zc->zc_name, dataset); 3792 pair = nvlist_next_nvpair(props, NULL); 3793 while (pair != NULL) { 3794 next_pair = nvlist_next_nvpair(props, pair); 3795 3796 (void) strcpy(zc->zc_value, nvpair_name(pair)); 3797 if ((err = zfs_check_settable(dataset, pair, CRED())) != 0 || 3798 (err = zfs_secpolicy_inherit_prop(zc, NULL, CRED())) != 0) { 3799 VERIFY(nvlist_remove_nvpair(props, pair) == 0); 3800 VERIFY(nvlist_add_int32(errors, 3801 zc->zc_value, err) == 0); 3802 } 3803 pair = next_pair; 3804 } 3805 kmem_free(zc, sizeof (zfs_cmd_t)); 3806 3807 if ((pair = nvlist_next_nvpair(errors, NULL)) == NULL) { 3808 nvlist_free(errors); 3809 errors = NULL; 3810 } else { 3811 VERIFY(nvpair_value_int32(pair, &rv) == 0); 3812 } 3813 3814 if (errlist == NULL) 3815 nvlist_free(errors); 3816 else 3817 *errlist = errors; 3818 3819 return (rv); 3820 } 3821 3822 static boolean_t 3823 propval_equals(nvpair_t *p1, nvpair_t *p2) 3824 { 3825 if (nvpair_type(p1) == DATA_TYPE_NVLIST) { 3826 /* dsl_prop_get_all_impl() format */ 3827 nvlist_t *attrs; 3828 VERIFY(nvpair_value_nvlist(p1, &attrs) == 0); 3829 VERIFY(nvlist_lookup_nvpair(attrs, ZPROP_VALUE, 3830 &p1) == 0); 3831 } 3832 3833 if (nvpair_type(p2) == DATA_TYPE_NVLIST) { 3834 nvlist_t *attrs; 3835 VERIFY(nvpair_value_nvlist(p2, &attrs) == 0); 3836 VERIFY(nvlist_lookup_nvpair(attrs, ZPROP_VALUE, 3837 &p2) == 0); 3838 } 3839 3840 if (nvpair_type(p1) != nvpair_type(p2)) 3841 return (B_FALSE); 3842 3843 if (nvpair_type(p1) == DATA_TYPE_STRING) { 3844 char *valstr1, *valstr2; 3845 3846 VERIFY(nvpair_value_string(p1, (char **)&valstr1) == 0); 3847 VERIFY(nvpair_value_string(p2, (char **)&valstr2) == 0); 3848 return (strcmp(valstr1, valstr2) == 0); 3849 } else { 3850 uint64_t intval1, intval2; 3851 3852 VERIFY(nvpair_value_uint64(p1, &intval1) == 0); 3853 VERIFY(nvpair_value_uint64(p2, &intval2) == 0); 3854 return (intval1 == intval2); 3855 } 3856 } 3857 3858 /* 3859 * Remove properties from props if they are not going to change (as determined 3860 * by comparison with origprops). Remove them from origprops as well, since we 3861 * do not need to clear or restore properties that won't change. 3862 */ 3863 static void 3864 props_reduce(nvlist_t *props, nvlist_t *origprops) 3865 { 3866 nvpair_t *pair, *next_pair; 3867 3868 if (origprops == NULL) 3869 return; /* all props need to be received */ 3870 3871 pair = nvlist_next_nvpair(props, NULL); 3872 while (pair != NULL) { 3873 const char *propname = nvpair_name(pair); 3874 nvpair_t *match; 3875 3876 next_pair = nvlist_next_nvpair(props, pair); 3877 3878 if ((nvlist_lookup_nvpair(origprops, propname, 3879 &match) != 0) || !propval_equals(pair, match)) 3880 goto next; /* need to set received value */ 3881 3882 /* don't clear the existing received value */ 3883 (void) nvlist_remove_nvpair(origprops, match); 3884 /* don't bother receiving the property */ 3885 (void) nvlist_remove_nvpair(props, pair); 3886 next: 3887 pair = next_pair; 3888 } 3889 } 3890 3891 #ifdef DEBUG 3892 static boolean_t zfs_ioc_recv_inject_err; 3893 #endif 3894 3895 /* 3896 * inputs: 3897 * zc_name name of containing filesystem 3898 * zc_nvlist_src{_size} nvlist of properties to apply 3899 * zc_value name of snapshot to create 3900 * zc_string name of clone origin (if DRR_FLAG_CLONE) 3901 * zc_cookie file descriptor to recv from 3902 * zc_begin_record the BEGIN record of the stream (not byteswapped) 3903 * zc_guid force flag 3904 * zc_cleanup_fd cleanup-on-exit file descriptor 3905 * zc_action_handle handle for this guid/ds mapping (or zero on first call) 3906 * 3907 * outputs: 3908 * zc_cookie number of bytes read 3909 * zc_nvlist_dst{_size} error for each unapplied received property 3910 * zc_obj zprop_errflags_t 3911 * zc_action_handle handle for this guid/ds mapping 3912 */ 3913 static int 3914 zfs_ioc_recv(zfs_cmd_t *zc) 3915 { 3916 file_t *fp; 3917 dmu_recv_cookie_t drc; 3918 boolean_t force = (boolean_t)zc->zc_guid; 3919 int fd; 3920 int error = 0; 3921 int props_error = 0; 3922 nvlist_t *errors; 3923 offset_t off; 3924 nvlist_t *props = NULL; /* sent properties */ 3925 nvlist_t *origprops = NULL; /* existing properties */ 3926 char *origin = NULL; 3927 char *tosnap; 3928 char tofs[ZFS_MAXNAMELEN]; 3929 boolean_t first_recvd_props = B_FALSE; 3930 3931 if (dataset_namecheck(zc->zc_value, NULL, NULL) != 0 || 3932 strchr(zc->zc_value, '@') == NULL || 3933 strchr(zc->zc_value, '%')) 3934 return (SET_ERROR(EINVAL)); 3935 3936 (void) strcpy(tofs, zc->zc_value); 3937 tosnap = strchr(tofs, '@'); 3938 *tosnap++ = '\0'; 3939 3940 if (zc->zc_nvlist_src != NULL && 3941 (error = get_nvlist(zc->zc_nvlist_src, zc->zc_nvlist_src_size, 3942 zc->zc_iflags, &props)) != 0) 3943 return (error); 3944 3945 fd = zc->zc_cookie; 3946 fp = getf(fd); 3947 if (fp == NULL) { 3948 nvlist_free(props); 3949 return (SET_ERROR(EBADF)); 3950 } 3951 3952 VERIFY(nvlist_alloc(&errors, NV_UNIQUE_NAME, KM_SLEEP) == 0); 3953 3954 if (zc->zc_string[0]) 3955 origin = zc->zc_string; 3956 3957 error = dmu_recv_begin(tofs, tosnap, 3958 &zc->zc_begin_record, force, origin, &drc); 3959 if (error != 0) 3960 goto out; 3961 3962 /* 3963 * Set properties before we receive the stream so that they are applied 3964 * to the new data. Note that we must call dmu_recv_stream() if 3965 * dmu_recv_begin() succeeds. 3966 */ 3967 if (props != NULL && !drc.drc_newfs) { 3968 if (spa_version(dsl_dataset_get_spa(drc.drc_ds)) >= 3969 SPA_VERSION_RECVD_PROPS && 3970 !dsl_prop_get_hasrecvd(tofs)) 3971 first_recvd_props = B_TRUE; 3972 3973 /* 3974 * If new received properties are supplied, they are to 3975 * completely replace the existing received properties, so stash 3976 * away the existing ones. 3977 */ 3978 if (dsl_prop_get_received(tofs, &origprops) == 0) { 3979 nvlist_t *errlist = NULL; 3980 /* 3981 * Don't bother writing a property if its value won't 3982 * change (and avoid the unnecessary security checks). 3983 * 3984 * The first receive after SPA_VERSION_RECVD_PROPS is a 3985 * special case where we blow away all local properties 3986 * regardless. 3987 */ 3988 if (!first_recvd_props) 3989 props_reduce(props, origprops); 3990 if (zfs_check_clearable(tofs, origprops, &errlist) != 0) 3991 (void) nvlist_merge(errors, errlist, 0); 3992 nvlist_free(errlist); 3993 3994 if (clear_received_props(tofs, origprops, 3995 first_recvd_props ? NULL : props) != 0) 3996 zc->zc_obj |= ZPROP_ERR_NOCLEAR; 3997 } else { 3998 zc->zc_obj |= ZPROP_ERR_NOCLEAR; 3999 } 4000 } 4001 4002 if (props != NULL) { 4003 props_error = dsl_prop_set_hasrecvd(tofs); 4004 4005 if (props_error == 0) { 4006 (void) zfs_set_prop_nvlist(tofs, ZPROP_SRC_RECEIVED, 4007 props, errors); 4008 } 4009 } 4010 4011 if (zc->zc_nvlist_dst_size != 0 && 4012 (nvlist_smush(errors, zc->zc_nvlist_dst_size) != 0 || 4013 put_nvlist(zc, errors) != 0)) { 4014 /* 4015 * Caller made zc->zc_nvlist_dst less than the minimum expected 4016 * size or supplied an invalid address. 4017 */ 4018 props_error = SET_ERROR(EINVAL); 4019 } 4020 4021 off = fp->f_offset; 4022 error = dmu_recv_stream(&drc, fp->f_vnode, &off, zc->zc_cleanup_fd, 4023 &zc->zc_action_handle); 4024 4025 if (error == 0) { 4026 zfsvfs_t *zfsvfs = NULL; 4027 4028 if (getzfsvfs(tofs, &zfsvfs) == 0) { 4029 /* online recv */ 4030 int end_err; 4031 4032 error = zfs_suspend_fs(zfsvfs); 4033 /* 4034 * If the suspend fails, then the recv_end will 4035 * likely also fail, and clean up after itself. 4036 */ 4037 end_err = dmu_recv_end(&drc); 4038 if (error == 0) 4039 error = zfs_resume_fs(zfsvfs, tofs); 4040 error = error ? error : end_err; 4041 VFS_RELE(zfsvfs->z_vfs); 4042 } else { 4043 error = dmu_recv_end(&drc); 4044 } 4045 } 4046 4047 zc->zc_cookie = off - fp->f_offset; 4048 if (VOP_SEEK(fp->f_vnode, fp->f_offset, &off, NULL) == 0) 4049 fp->f_offset = off; 4050 4051 #ifdef DEBUG 4052 if (zfs_ioc_recv_inject_err) { 4053 zfs_ioc_recv_inject_err = B_FALSE; 4054 error = 1; 4055 } 4056 #endif 4057 /* 4058 * On error, restore the original props. 4059 */ 4060 if (error != 0 && props != NULL && !drc.drc_newfs) { 4061 if (clear_received_props(tofs, props, NULL) != 0) { 4062 /* 4063 * We failed to clear the received properties. 4064 * Since we may have left a $recvd value on the 4065 * system, we can't clear the $hasrecvd flag. 4066 */ 4067 zc->zc_obj |= ZPROP_ERR_NORESTORE; 4068 } else if (first_recvd_props) { 4069 dsl_prop_unset_hasrecvd(tofs); 4070 } 4071 4072 if (origprops == NULL && !drc.drc_newfs) { 4073 /* We failed to stash the original properties. */ 4074 zc->zc_obj |= ZPROP_ERR_NORESTORE; 4075 } 4076 4077 /* 4078 * dsl_props_set() will not convert RECEIVED to LOCAL on or 4079 * after SPA_VERSION_RECVD_PROPS, so we need to specify LOCAL 4080 * explictly if we're restoring local properties cleared in the 4081 * first new-style receive. 4082 */ 4083 if (origprops != NULL && 4084 zfs_set_prop_nvlist(tofs, (first_recvd_props ? 4085 ZPROP_SRC_LOCAL : ZPROP_SRC_RECEIVED), 4086 origprops, NULL) != 0) { 4087 /* 4088 * We stashed the original properties but failed to 4089 * restore them. 4090 */ 4091 zc->zc_obj |= ZPROP_ERR_NORESTORE; 4092 } 4093 } 4094 out: 4095 nvlist_free(props); 4096 nvlist_free(origprops); 4097 nvlist_free(errors); 4098 releasef(fd); 4099 4100 if (error == 0) 4101 error = props_error; 4102 4103 return (error); 4104 } 4105 4106 /* 4107 * inputs: 4108 * zc_name name of snapshot to send 4109 * zc_cookie file descriptor to send stream to 4110 * zc_obj fromorigin flag (mutually exclusive with zc_fromobj) 4111 * zc_sendobj objsetid of snapshot to send 4112 * zc_fromobj objsetid of incremental fromsnap (may be zero) 4113 * zc_guid if set, estimate size of stream only. zc_cookie is ignored. 4114 * output size in zc_objset_type. 4115 * 4116 * outputs: none 4117 */ 4118 static int 4119 zfs_ioc_send(zfs_cmd_t *zc) 4120 { 4121 int error; 4122 offset_t off; 4123 boolean_t estimate = (zc->zc_guid != 0); 4124 4125 if (zc->zc_obj != 0) { 4126 dsl_pool_t *dp; 4127 dsl_dataset_t *tosnap; 4128 4129 error = dsl_pool_hold(zc->zc_name, FTAG, &dp); 4130 if (error != 0) 4131 return (error); 4132 4133 error = dsl_dataset_hold_obj(dp, zc->zc_sendobj, FTAG, &tosnap); 4134 if (error != 0) { 4135 dsl_pool_rele(dp, FTAG); 4136 return (error); 4137 } 4138 4139 if (dsl_dir_is_clone(tosnap->ds_dir)) 4140 zc->zc_fromobj = tosnap->ds_dir->dd_phys->dd_origin_obj; 4141 dsl_dataset_rele(tosnap, FTAG); 4142 dsl_pool_rele(dp, FTAG); 4143 } 4144 4145 if (estimate) { 4146 dsl_pool_t *dp; 4147 dsl_dataset_t *tosnap; 4148 dsl_dataset_t *fromsnap = NULL; 4149 4150 error = dsl_pool_hold(zc->zc_name, FTAG, &dp); 4151 if (error != 0) 4152 return (error); 4153 4154 error = dsl_dataset_hold_obj(dp, zc->zc_sendobj, FTAG, &tosnap); 4155 if (error != 0) { 4156 dsl_pool_rele(dp, FTAG); 4157 return (error); 4158 } 4159 4160 if (zc->zc_fromobj != 0) { 4161 error = dsl_dataset_hold_obj(dp, zc->zc_fromobj, 4162 FTAG, &fromsnap); 4163 if (error != 0) { 4164 dsl_dataset_rele(tosnap, FTAG); 4165 dsl_pool_rele(dp, FTAG); 4166 return (error); 4167 } 4168 } 4169 4170 error = dmu_send_estimate(tosnap, fromsnap, 4171 &zc->zc_objset_type); 4172 4173 if (fromsnap != NULL) 4174 dsl_dataset_rele(fromsnap, FTAG); 4175 dsl_dataset_rele(tosnap, FTAG); 4176 dsl_pool_rele(dp, FTAG); 4177 } else { 4178 file_t *fp = getf(zc->zc_cookie); 4179 if (fp == NULL) 4180 return (SET_ERROR(EBADF)); 4181 4182 off = fp->f_offset; 4183 error = dmu_send_obj(zc->zc_name, zc->zc_sendobj, 4184 zc->zc_fromobj, zc->zc_cookie, fp->f_vnode, &off); 4185 4186 if (VOP_SEEK(fp->f_vnode, fp->f_offset, &off, NULL) == 0) 4187 fp->f_offset = off; 4188 releasef(zc->zc_cookie); 4189 } 4190 return (error); 4191 } 4192 4193 /* 4194 * inputs: 4195 * zc_name name of snapshot on which to report progress 4196 * zc_cookie file descriptor of send stream 4197 * 4198 * outputs: 4199 * zc_cookie number of bytes written in send stream thus far 4200 */ 4201 static int 4202 zfs_ioc_send_progress(zfs_cmd_t *zc) 4203 { 4204 dsl_pool_t *dp; 4205 dsl_dataset_t *ds; 4206 dmu_sendarg_t *dsp = NULL; 4207 int error; 4208 4209 error = dsl_pool_hold(zc->zc_name, FTAG, &dp); 4210 if (error != 0) 4211 return (error); 4212 4213 error = dsl_dataset_hold(dp, zc->zc_name, FTAG, &ds); 4214 if (error != 0) { 4215 dsl_pool_rele(dp, FTAG); 4216 return (error); 4217 } 4218 4219 mutex_enter(&ds->ds_sendstream_lock); 4220 4221 /* 4222 * Iterate over all the send streams currently active on this dataset. 4223 * If there's one which matches the specified file descriptor _and_ the 4224 * stream was started by the current process, return the progress of 4225 * that stream. 4226 */ 4227 for (dsp = list_head(&ds->ds_sendstreams); dsp != NULL; 4228 dsp = list_next(&ds->ds_sendstreams, dsp)) { 4229 if (dsp->dsa_outfd == zc->zc_cookie && 4230 dsp->dsa_proc == curproc) 4231 break; 4232 } 4233 4234 if (dsp != NULL) 4235 zc->zc_cookie = *(dsp->dsa_off); 4236 else 4237 error = SET_ERROR(ENOENT); 4238 4239 mutex_exit(&ds->ds_sendstream_lock); 4240 dsl_dataset_rele(ds, FTAG); 4241 dsl_pool_rele(dp, FTAG); 4242 return (error); 4243 } 4244 4245 static int 4246 zfs_ioc_inject_fault(zfs_cmd_t *zc) 4247 { 4248 int id, error; 4249 4250 error = zio_inject_fault(zc->zc_name, (int)zc->zc_guid, &id, 4251 &zc->zc_inject_record); 4252 4253 if (error == 0) 4254 zc->zc_guid = (uint64_t)id; 4255 4256 return (error); 4257 } 4258 4259 static int 4260 zfs_ioc_clear_fault(zfs_cmd_t *zc) 4261 { 4262 return (zio_clear_fault((int)zc->zc_guid)); 4263 } 4264 4265 static int 4266 zfs_ioc_inject_list_next(zfs_cmd_t *zc) 4267 { 4268 int id = (int)zc->zc_guid; 4269 int error; 4270 4271 error = zio_inject_list_next(&id, zc->zc_name, sizeof (zc->zc_name), 4272 &zc->zc_inject_record); 4273 4274 zc->zc_guid = id; 4275 4276 return (error); 4277 } 4278 4279 static int 4280 zfs_ioc_error_log(zfs_cmd_t *zc) 4281 { 4282 spa_t *spa; 4283 int error; 4284 size_t count = (size_t)zc->zc_nvlist_dst_size; 4285 4286 if ((error = spa_open(zc->zc_name, &spa, FTAG)) != 0) 4287 return (error); 4288 4289 error = spa_get_errlog(spa, (void *)(uintptr_t)zc->zc_nvlist_dst, 4290 &count); 4291 if (error == 0) 4292 zc->zc_nvlist_dst_size = count; 4293 else 4294 zc->zc_nvlist_dst_size = spa_get_errlog_size(spa); 4295 4296 spa_close(spa, FTAG); 4297 4298 return (error); 4299 } 4300 4301 static int 4302 zfs_ioc_clear(zfs_cmd_t *zc) 4303 { 4304 spa_t *spa; 4305 vdev_t *vd; 4306 int error; 4307 4308 /* 4309 * On zpool clear we also fix up missing slogs 4310 */ 4311 mutex_enter(&spa_namespace_lock); 4312 spa = spa_lookup(zc->zc_name); 4313 if (spa == NULL) { 4314 mutex_exit(&spa_namespace_lock); 4315 return (SET_ERROR(EIO)); 4316 } 4317 if (spa_get_log_state(spa) == SPA_LOG_MISSING) { 4318 /* we need to let spa_open/spa_load clear the chains */ 4319 spa_set_log_state(spa, SPA_LOG_CLEAR); 4320 } 4321 spa->spa_last_open_failed = 0; 4322 mutex_exit(&spa_namespace_lock); 4323 4324 if (zc->zc_cookie & ZPOOL_NO_REWIND) { 4325 error = spa_open(zc->zc_name, &spa, FTAG); 4326 } else { 4327 nvlist_t *policy; 4328 nvlist_t *config = NULL; 4329 4330 if (zc->zc_nvlist_src == NULL) 4331 return (SET_ERROR(EINVAL)); 4332 4333 if ((error = get_nvlist(zc->zc_nvlist_src, 4334 zc->zc_nvlist_src_size, zc->zc_iflags, &policy)) == 0) { 4335 error = spa_open_rewind(zc->zc_name, &spa, FTAG, 4336 policy, &config); 4337 if (config != NULL) { 4338 int err; 4339 4340 if ((err = put_nvlist(zc, config)) != 0) 4341 error = err; 4342 nvlist_free(config); 4343 } 4344 nvlist_free(policy); 4345 } 4346 } 4347 4348 if (error != 0) 4349 return (error); 4350 4351 spa_vdev_state_enter(spa, SCL_NONE); 4352 4353 if (zc->zc_guid == 0) { 4354 vd = NULL; 4355 } else { 4356 vd = spa_lookup_by_guid(spa, zc->zc_guid, B_TRUE); 4357 if (vd == NULL) { 4358 (void) spa_vdev_state_exit(spa, NULL, ENODEV); 4359 spa_close(spa, FTAG); 4360 return (SET_ERROR(ENODEV)); 4361 } 4362 } 4363 4364 vdev_clear(spa, vd); 4365 4366 (void) spa_vdev_state_exit(spa, NULL, 0); 4367 4368 /* 4369 * Resume any suspended I/Os. 4370 */ 4371 if (zio_resume(spa) != 0) 4372 error = SET_ERROR(EIO); 4373 4374 spa_close(spa, FTAG); 4375 4376 return (error); 4377 } 4378 4379 static int 4380 zfs_ioc_pool_reopen(zfs_cmd_t *zc) 4381 { 4382 spa_t *spa; 4383 int error; 4384 4385 error = spa_open(zc->zc_name, &spa, FTAG); 4386 if (error != 0) 4387 return (error); 4388 4389 spa_vdev_state_enter(spa, SCL_NONE); 4390 4391 /* 4392 * If a resilver is already in progress then set the 4393 * spa_scrub_reopen flag to B_TRUE so that we don't restart 4394 * the scan as a side effect of the reopen. Otherwise, let 4395 * vdev_open() decided if a resilver is required. 4396 */ 4397 spa->spa_scrub_reopen = dsl_scan_resilvering(spa->spa_dsl_pool); 4398 vdev_reopen(spa->spa_root_vdev); 4399 spa->spa_scrub_reopen = B_FALSE; 4400 4401 (void) spa_vdev_state_exit(spa, NULL, 0); 4402 spa_close(spa, FTAG); 4403 return (0); 4404 } 4405 /* 4406 * inputs: 4407 * zc_name name of filesystem 4408 * zc_value name of origin snapshot 4409 * 4410 * outputs: 4411 * zc_string name of conflicting snapshot, if there is one 4412 */ 4413 static int 4414 zfs_ioc_promote(zfs_cmd_t *zc) 4415 { 4416 char *cp; 4417 4418 /* 4419 * We don't need to unmount *all* the origin fs's snapshots, but 4420 * it's easier. 4421 */ 4422 cp = strchr(zc->zc_value, '@'); 4423 if (cp) 4424 *cp = '\0'; 4425 (void) dmu_objset_find(zc->zc_value, 4426 zfs_unmount_snap_cb, NULL, DS_FIND_SNAPSHOTS); 4427 return (dsl_dataset_promote(zc->zc_name, zc->zc_string)); 4428 } 4429 4430 /* 4431 * Retrieve a single {user|group}{used|quota}@... property. 4432 * 4433 * inputs: 4434 * zc_name name of filesystem 4435 * zc_objset_type zfs_userquota_prop_t 4436 * zc_value domain name (eg. "S-1-234-567-89") 4437 * zc_guid RID/UID/GID 4438 * 4439 * outputs: 4440 * zc_cookie property value 4441 */ 4442 static int 4443 zfs_ioc_userspace_one(zfs_cmd_t *zc) 4444 { 4445 zfsvfs_t *zfsvfs; 4446 int error; 4447 4448 if (zc->zc_objset_type >= ZFS_NUM_USERQUOTA_PROPS) 4449 return (SET_ERROR(EINVAL)); 4450 4451 error = zfsvfs_hold(zc->zc_name, FTAG, &zfsvfs, B_FALSE); 4452 if (error != 0) 4453 return (error); 4454 4455 error = zfs_userspace_one(zfsvfs, 4456 zc->zc_objset_type, zc->zc_value, zc->zc_guid, &zc->zc_cookie); 4457 zfsvfs_rele(zfsvfs, FTAG); 4458 4459 return (error); 4460 } 4461 4462 /* 4463 * inputs: 4464 * zc_name name of filesystem 4465 * zc_cookie zap cursor 4466 * zc_objset_type zfs_userquota_prop_t 4467 * zc_nvlist_dst[_size] buffer to fill (not really an nvlist) 4468 * 4469 * outputs: 4470 * zc_nvlist_dst[_size] data buffer (array of zfs_useracct_t) 4471 * zc_cookie zap cursor 4472 */ 4473 static int 4474 zfs_ioc_userspace_many(zfs_cmd_t *zc) 4475 { 4476 zfsvfs_t *zfsvfs; 4477 int bufsize = zc->zc_nvlist_dst_size; 4478 4479 if (bufsize <= 0) 4480 return (SET_ERROR(ENOMEM)); 4481 4482 int error = zfsvfs_hold(zc->zc_name, FTAG, &zfsvfs, B_FALSE); 4483 if (error != 0) 4484 return (error); 4485 4486 void *buf = kmem_alloc(bufsize, KM_SLEEP); 4487 4488 error = zfs_userspace_many(zfsvfs, zc->zc_objset_type, &zc->zc_cookie, 4489 buf, &zc->zc_nvlist_dst_size); 4490 4491 if (error == 0) { 4492 error = xcopyout(buf, 4493 (void *)(uintptr_t)zc->zc_nvlist_dst, 4494 zc->zc_nvlist_dst_size); 4495 } 4496 kmem_free(buf, bufsize); 4497 zfsvfs_rele(zfsvfs, FTAG); 4498 4499 return (error); 4500 } 4501 4502 /* 4503 * inputs: 4504 * zc_name name of filesystem 4505 * 4506 * outputs: 4507 * none 4508 */ 4509 static int 4510 zfs_ioc_userspace_upgrade(zfs_cmd_t *zc) 4511 { 4512 objset_t *os; 4513 int error = 0; 4514 zfsvfs_t *zfsvfs; 4515 4516 if (getzfsvfs(zc->zc_name, &zfsvfs) == 0) { 4517 if (!dmu_objset_userused_enabled(zfsvfs->z_os)) { 4518 /* 4519 * If userused is not enabled, it may be because the 4520 * objset needs to be closed & reopened (to grow the 4521 * objset_phys_t). Suspend/resume the fs will do that. 4522 */ 4523 error = zfs_suspend_fs(zfsvfs); 4524 if (error == 0) 4525 error = zfs_resume_fs(zfsvfs, zc->zc_name); 4526 } 4527 if (error == 0) 4528 error = dmu_objset_userspace_upgrade(zfsvfs->z_os); 4529 VFS_RELE(zfsvfs->z_vfs); 4530 } else { 4531 /* XXX kind of reading contents without owning */ 4532 error = dmu_objset_hold(zc->zc_name, FTAG, &os); 4533 if (error != 0) 4534 return (error); 4535 4536 error = dmu_objset_userspace_upgrade(os); 4537 dmu_objset_rele(os, FTAG); 4538 } 4539 4540 return (error); 4541 } 4542 4543 /* 4544 * We don't want to have a hard dependency 4545 * against some special symbols in sharefs 4546 * nfs, and smbsrv. Determine them if needed when 4547 * the first file system is shared. 4548 * Neither sharefs, nfs or smbsrv are unloadable modules. 4549 */ 4550 int (*znfsexport_fs)(void *arg); 4551 int (*zshare_fs)(enum sharefs_sys_op, share_t *, uint32_t); 4552 int (*zsmbexport_fs)(void *arg, boolean_t add_share); 4553 4554 int zfs_nfsshare_inited; 4555 int zfs_smbshare_inited; 4556 4557 ddi_modhandle_t nfs_mod; 4558 ddi_modhandle_t sharefs_mod; 4559 ddi_modhandle_t smbsrv_mod; 4560 kmutex_t zfs_share_lock; 4561 4562 static int 4563 zfs_init_sharefs() 4564 { 4565 int error; 4566 4567 ASSERT(MUTEX_HELD(&zfs_share_lock)); 4568 /* Both NFS and SMB shares also require sharetab support. */ 4569 if (sharefs_mod == NULL && ((sharefs_mod = 4570 ddi_modopen("fs/sharefs", 4571 KRTLD_MODE_FIRST, &error)) == NULL)) { 4572 return (SET_ERROR(ENOSYS)); 4573 } 4574 if (zshare_fs == NULL && ((zshare_fs = 4575 (int (*)(enum sharefs_sys_op, share_t *, uint32_t)) 4576 ddi_modsym(sharefs_mod, "sharefs_impl", &error)) == NULL)) { 4577 return (SET_ERROR(ENOSYS)); 4578 } 4579 return (0); 4580 } 4581 4582 static int 4583 zfs_ioc_share(zfs_cmd_t *zc) 4584 { 4585 int error; 4586 int opcode; 4587 4588 switch (zc->zc_share.z_sharetype) { 4589 case ZFS_SHARE_NFS: 4590 case ZFS_UNSHARE_NFS: 4591 if (zfs_nfsshare_inited == 0) { 4592 mutex_enter(&zfs_share_lock); 4593 if (nfs_mod == NULL && ((nfs_mod = ddi_modopen("fs/nfs", 4594 KRTLD_MODE_FIRST, &error)) == NULL)) { 4595 mutex_exit(&zfs_share_lock); 4596 return (SET_ERROR(ENOSYS)); 4597 } 4598 if (znfsexport_fs == NULL && 4599 ((znfsexport_fs = (int (*)(void *)) 4600 ddi_modsym(nfs_mod, 4601 "nfs_export", &error)) == NULL)) { 4602 mutex_exit(&zfs_share_lock); 4603 return (SET_ERROR(ENOSYS)); 4604 } 4605 error = zfs_init_sharefs(); 4606 if (error != 0) { 4607 mutex_exit(&zfs_share_lock); 4608 return (SET_ERROR(ENOSYS)); 4609 } 4610 zfs_nfsshare_inited = 1; 4611 mutex_exit(&zfs_share_lock); 4612 } 4613 break; 4614 case ZFS_SHARE_SMB: 4615 case ZFS_UNSHARE_SMB: 4616 if (zfs_smbshare_inited == 0) { 4617 mutex_enter(&zfs_share_lock); 4618 if (smbsrv_mod == NULL && ((smbsrv_mod = 4619 ddi_modopen("drv/smbsrv", 4620 KRTLD_MODE_FIRST, &error)) == NULL)) { 4621 mutex_exit(&zfs_share_lock); 4622 return (SET_ERROR(ENOSYS)); 4623 } 4624 if (zsmbexport_fs == NULL && ((zsmbexport_fs = 4625 (int (*)(void *, boolean_t))ddi_modsym(smbsrv_mod, 4626 "smb_server_share", &error)) == NULL)) { 4627 mutex_exit(&zfs_share_lock); 4628 return (SET_ERROR(ENOSYS)); 4629 } 4630 error = zfs_init_sharefs(); 4631 if (error != 0) { 4632 mutex_exit(&zfs_share_lock); 4633 return (SET_ERROR(ENOSYS)); 4634 } 4635 zfs_smbshare_inited = 1; 4636 mutex_exit(&zfs_share_lock); 4637 } 4638 break; 4639 default: 4640 return (SET_ERROR(EINVAL)); 4641 } 4642 4643 switch (zc->zc_share.z_sharetype) { 4644 case ZFS_SHARE_NFS: 4645 case ZFS_UNSHARE_NFS: 4646 if (error = 4647 znfsexport_fs((void *) 4648 (uintptr_t)zc->zc_share.z_exportdata)) 4649 return (error); 4650 break; 4651 case ZFS_SHARE_SMB: 4652 case ZFS_UNSHARE_SMB: 4653 if (error = zsmbexport_fs((void *) 4654 (uintptr_t)zc->zc_share.z_exportdata, 4655 zc->zc_share.z_sharetype == ZFS_SHARE_SMB ? 4656 B_TRUE: B_FALSE)) { 4657 return (error); 4658 } 4659 break; 4660 } 4661 4662 opcode = (zc->zc_share.z_sharetype == ZFS_SHARE_NFS || 4663 zc->zc_share.z_sharetype == ZFS_SHARE_SMB) ? 4664 SHAREFS_ADD : SHAREFS_REMOVE; 4665 4666 /* 4667 * Add or remove share from sharetab 4668 */ 4669 error = zshare_fs(opcode, 4670 (void *)(uintptr_t)zc->zc_share.z_sharedata, 4671 zc->zc_share.z_sharemax); 4672 4673 return (error); 4674 4675 } 4676 4677 ace_t full_access[] = { 4678 {(uid_t)-1, ACE_ALL_PERMS, ACE_EVERYONE, 0} 4679 }; 4680 4681 /* 4682 * inputs: 4683 * zc_name name of containing filesystem 4684 * zc_obj object # beyond which we want next in-use object # 4685 * 4686 * outputs: 4687 * zc_obj next in-use object # 4688 */ 4689 static int 4690 zfs_ioc_next_obj(zfs_cmd_t *zc) 4691 { 4692 objset_t *os = NULL; 4693 int error; 4694 4695 error = dmu_objset_hold(zc->zc_name, FTAG, &os); 4696 if (error != 0) 4697 return (error); 4698 4699 error = dmu_object_next(os, &zc->zc_obj, B_FALSE, 4700 os->os_dsl_dataset->ds_phys->ds_prev_snap_txg); 4701 4702 dmu_objset_rele(os, FTAG); 4703 return (error); 4704 } 4705 4706 /* 4707 * inputs: 4708 * zc_name name of filesystem 4709 * zc_value prefix name for snapshot 4710 * zc_cleanup_fd cleanup-on-exit file descriptor for calling process 4711 * 4712 * outputs: 4713 * zc_value short name of new snapshot 4714 */ 4715 static int 4716 zfs_ioc_tmp_snapshot(zfs_cmd_t *zc) 4717 { 4718 char *snap_name; 4719 char *hold_name; 4720 int error; 4721 minor_t minor; 4722 4723 error = zfs_onexit_fd_hold(zc->zc_cleanup_fd, &minor); 4724 if (error != 0) 4725 return (error); 4726 4727 snap_name = kmem_asprintf("%s-%016llx", zc->zc_value, 4728 (u_longlong_t)ddi_get_lbolt64()); 4729 hold_name = kmem_asprintf("%%%s", zc->zc_value); 4730 4731 error = dsl_dataset_snapshot_tmp(zc->zc_name, snap_name, minor, 4732 hold_name); 4733 if (error == 0) 4734 (void) strcpy(zc->zc_value, snap_name); 4735 strfree(snap_name); 4736 strfree(hold_name); 4737 zfs_onexit_fd_rele(zc->zc_cleanup_fd); 4738 return (error); 4739 } 4740 4741 /* 4742 * inputs: 4743 * zc_name name of "to" snapshot 4744 * zc_value name of "from" snapshot 4745 * zc_cookie file descriptor to write diff data on 4746 * 4747 * outputs: 4748 * dmu_diff_record_t's to the file descriptor 4749 */ 4750 static int 4751 zfs_ioc_diff(zfs_cmd_t *zc) 4752 { 4753 file_t *fp; 4754 offset_t off; 4755 int error; 4756 4757 fp = getf(zc->zc_cookie); 4758 if (fp == NULL) 4759 return (SET_ERROR(EBADF)); 4760 4761 off = fp->f_offset; 4762 4763 error = dmu_diff(zc->zc_name, zc->zc_value, fp->f_vnode, &off); 4764 4765 if (VOP_SEEK(fp->f_vnode, fp->f_offset, &off, NULL) == 0) 4766 fp->f_offset = off; 4767 releasef(zc->zc_cookie); 4768 4769 return (error); 4770 } 4771 4772 /* 4773 * Remove all ACL files in shares dir 4774 */ 4775 static int 4776 zfs_smb_acl_purge(znode_t *dzp) 4777 { 4778 zap_cursor_t zc; 4779 zap_attribute_t zap; 4780 zfsvfs_t *zfsvfs = dzp->z_zfsvfs; 4781 int error; 4782 4783 for (zap_cursor_init(&zc, zfsvfs->z_os, dzp->z_id); 4784 (error = zap_cursor_retrieve(&zc, &zap)) == 0; 4785 zap_cursor_advance(&zc)) { 4786 if ((error = VOP_REMOVE(ZTOV(dzp), zap.za_name, kcred, 4787 NULL, 0)) != 0) 4788 break; 4789 } 4790 zap_cursor_fini(&zc); 4791 return (error); 4792 } 4793 4794 static int 4795 zfs_ioc_smb_acl(zfs_cmd_t *zc) 4796 { 4797 vnode_t *vp; 4798 znode_t *dzp; 4799 vnode_t *resourcevp = NULL; 4800 znode_t *sharedir; 4801 zfsvfs_t *zfsvfs; 4802 nvlist_t *nvlist; 4803 char *src, *target; 4804 vattr_t vattr; 4805 vsecattr_t vsec; 4806 int error = 0; 4807 4808 if ((error = lookupname(zc->zc_value, UIO_SYSSPACE, 4809 NO_FOLLOW, NULL, &vp)) != 0) 4810 return (error); 4811 4812 /* Now make sure mntpnt and dataset are ZFS */ 4813 4814 if (vp->v_vfsp->vfs_fstype != zfsfstype || 4815 (strcmp((char *)refstr_value(vp->v_vfsp->vfs_resource), 4816 zc->zc_name) != 0)) { 4817 VN_RELE(vp); 4818 return (SET_ERROR(EINVAL)); 4819 } 4820 4821 dzp = VTOZ(vp); 4822 zfsvfs = dzp->z_zfsvfs; 4823 ZFS_ENTER(zfsvfs); 4824 4825 /* 4826 * Create share dir if its missing. 4827 */ 4828 mutex_enter(&zfsvfs->z_lock); 4829 if (zfsvfs->z_shares_dir == 0) { 4830 dmu_tx_t *tx; 4831 4832 tx = dmu_tx_create(zfsvfs->z_os); 4833 dmu_tx_hold_zap(tx, MASTER_NODE_OBJ, TRUE, 4834 ZFS_SHARES_DIR); 4835 dmu_tx_hold_zap(tx, DMU_NEW_OBJECT, FALSE, NULL); 4836 error = dmu_tx_assign(tx, TXG_WAIT); 4837 if (error != 0) { 4838 dmu_tx_abort(tx); 4839 } else { 4840 error = zfs_create_share_dir(zfsvfs, tx); 4841 dmu_tx_commit(tx); 4842 } 4843 if (error != 0) { 4844 mutex_exit(&zfsvfs->z_lock); 4845 VN_RELE(vp); 4846 ZFS_EXIT(zfsvfs); 4847 return (error); 4848 } 4849 } 4850 mutex_exit(&zfsvfs->z_lock); 4851 4852 ASSERT(zfsvfs->z_shares_dir); 4853 if ((error = zfs_zget(zfsvfs, zfsvfs->z_shares_dir, &sharedir)) != 0) { 4854 VN_RELE(vp); 4855 ZFS_EXIT(zfsvfs); 4856 return (error); 4857 } 4858 4859 switch (zc->zc_cookie) { 4860 case ZFS_SMB_ACL_ADD: 4861 vattr.va_mask = AT_MODE|AT_UID|AT_GID|AT_TYPE; 4862 vattr.va_type = VREG; 4863 vattr.va_mode = S_IFREG|0777; 4864 vattr.va_uid = 0; 4865 vattr.va_gid = 0; 4866 4867 vsec.vsa_mask = VSA_ACE; 4868 vsec.vsa_aclentp = &full_access; 4869 vsec.vsa_aclentsz = sizeof (full_access); 4870 vsec.vsa_aclcnt = 1; 4871 4872 error = VOP_CREATE(ZTOV(sharedir), zc->zc_string, 4873 &vattr, EXCL, 0, &resourcevp, kcred, 0, NULL, &vsec); 4874 if (resourcevp) 4875 VN_RELE(resourcevp); 4876 break; 4877 4878 case ZFS_SMB_ACL_REMOVE: 4879 error = VOP_REMOVE(ZTOV(sharedir), zc->zc_string, kcred, 4880 NULL, 0); 4881 break; 4882 4883 case ZFS_SMB_ACL_RENAME: 4884 if ((error = get_nvlist(zc->zc_nvlist_src, 4885 zc->zc_nvlist_src_size, zc->zc_iflags, &nvlist)) != 0) { 4886 VN_RELE(vp); 4887 ZFS_EXIT(zfsvfs); 4888 return (error); 4889 } 4890 if (nvlist_lookup_string(nvlist, ZFS_SMB_ACL_SRC, &src) || 4891 nvlist_lookup_string(nvlist, ZFS_SMB_ACL_TARGET, 4892 &target)) { 4893 VN_RELE(vp); 4894 VN_RELE(ZTOV(sharedir)); 4895 ZFS_EXIT(zfsvfs); 4896 nvlist_free(nvlist); 4897 return (error); 4898 } 4899 error = VOP_RENAME(ZTOV(sharedir), src, ZTOV(sharedir), target, 4900 kcred, NULL, 0); 4901 nvlist_free(nvlist); 4902 break; 4903 4904 case ZFS_SMB_ACL_PURGE: 4905 error = zfs_smb_acl_purge(sharedir); 4906 break; 4907 4908 default: 4909 error = SET_ERROR(EINVAL); 4910 break; 4911 } 4912 4913 VN_RELE(vp); 4914 VN_RELE(ZTOV(sharedir)); 4915 4916 ZFS_EXIT(zfsvfs); 4917 4918 return (error); 4919 } 4920 4921 /* 4922 * innvl: { 4923 * "holds" -> { snapname -> holdname (string), ... } 4924 * (optional) "cleanup_fd" -> fd (int32) 4925 * } 4926 * 4927 * outnvl: { 4928 * snapname -> error value (int32) 4929 * ... 4930 * } 4931 */ 4932 /* ARGSUSED */ 4933 static int 4934 zfs_ioc_hold(const char *pool, nvlist_t *args, nvlist_t *errlist) 4935 { 4936 nvlist_t *holds; 4937 int cleanup_fd = -1; 4938 int error; 4939 minor_t minor = 0; 4940 4941 error = nvlist_lookup_nvlist(args, "holds", &holds); 4942 if (error != 0) 4943 return (SET_ERROR(EINVAL)); 4944 4945 if (nvlist_lookup_int32(args, "cleanup_fd", &cleanup_fd) == 0) { 4946 error = zfs_onexit_fd_hold(cleanup_fd, &minor); 4947 if (error != 0) 4948 return (error); 4949 } 4950 4951 error = dsl_dataset_user_hold(holds, minor, errlist); 4952 if (minor != 0) 4953 zfs_onexit_fd_rele(cleanup_fd); 4954 return (error); 4955 } 4956 4957 /* 4958 * innvl is not used. 4959 * 4960 * outnvl: { 4961 * holdname -> time added (uint64 seconds since epoch) 4962 * ... 4963 * } 4964 */ 4965 /* ARGSUSED */ 4966 static int 4967 zfs_ioc_get_holds(const char *snapname, nvlist_t *args, nvlist_t *outnvl) 4968 { 4969 return (dsl_dataset_get_holds(snapname, outnvl)); 4970 } 4971 4972 /* 4973 * innvl: { 4974 * snapname -> { holdname, ... } 4975 * ... 4976 * } 4977 * 4978 * outnvl: { 4979 * snapname -> error value (int32) 4980 * ... 4981 * } 4982 */ 4983 /* ARGSUSED */ 4984 static int 4985 zfs_ioc_release(const char *pool, nvlist_t *holds, nvlist_t *errlist) 4986 { 4987 nvpair_t *pair; 4988 int err; 4989 4990 /* 4991 * The release may cause the snapshot to be destroyed; make sure it 4992 * is not mounted. 4993 */ 4994 for (pair = nvlist_next_nvpair(holds, NULL); pair != NULL; 4995 pair = nvlist_next_nvpair(holds, pair)) { 4996 err = zfs_unmount_snap(nvpair_name(pair)); 4997 if (err != 0) 4998 return (err); 4999 } 5000 5001 return (dsl_dataset_user_release(holds, errlist)); 5002 } 5003 5004 /* 5005 * inputs: 5006 * zc_name name of new filesystem or snapshot 5007 * zc_value full name of old snapshot 5008 * 5009 * outputs: 5010 * zc_cookie space in bytes 5011 * zc_objset_type compressed space in bytes 5012 * zc_perm_action uncompressed space in bytes 5013 */ 5014 static int 5015 zfs_ioc_space_written(zfs_cmd_t *zc) 5016 { 5017 int error; 5018 dsl_pool_t *dp; 5019 dsl_dataset_t *new, *old; 5020 5021 error = dsl_pool_hold(zc->zc_name, FTAG, &dp); 5022 if (error != 0) 5023 return (error); 5024 error = dsl_dataset_hold(dp, zc->zc_name, FTAG, &new); 5025 if (error != 0) { 5026 dsl_pool_rele(dp, FTAG); 5027 return (error); 5028 } 5029 error = dsl_dataset_hold(dp, zc->zc_value, FTAG, &old); 5030 if (error != 0) { 5031 dsl_dataset_rele(new, FTAG); 5032 dsl_pool_rele(dp, FTAG); 5033 return (error); 5034 } 5035 5036 error = dsl_dataset_space_written(old, new, &zc->zc_cookie, 5037 &zc->zc_objset_type, &zc->zc_perm_action); 5038 dsl_dataset_rele(old, FTAG); 5039 dsl_dataset_rele(new, FTAG); 5040 dsl_pool_rele(dp, FTAG); 5041 return (error); 5042 } 5043 5044 /* 5045 * innvl: { 5046 * "firstsnap" -> snapshot name 5047 * } 5048 * 5049 * outnvl: { 5050 * "used" -> space in bytes 5051 * "compressed" -> compressed space in bytes 5052 * "uncompressed" -> uncompressed space in bytes 5053 * } 5054 */ 5055 static int 5056 zfs_ioc_space_snaps(const char *lastsnap, nvlist_t *innvl, nvlist_t *outnvl) 5057 { 5058 int error; 5059 dsl_pool_t *dp; 5060 dsl_dataset_t *new, *old; 5061 char *firstsnap; 5062 uint64_t used, comp, uncomp; 5063 5064 if (nvlist_lookup_string(innvl, "firstsnap", &firstsnap) != 0) 5065 return (SET_ERROR(EINVAL)); 5066 5067 error = dsl_pool_hold(lastsnap, FTAG, &dp); 5068 if (error != 0) 5069 return (error); 5070 5071 error = dsl_dataset_hold(dp, lastsnap, FTAG, &new); 5072 if (error != 0) { 5073 dsl_pool_rele(dp, FTAG); 5074 return (error); 5075 } 5076 error = dsl_dataset_hold(dp, firstsnap, FTAG, &old); 5077 if (error != 0) { 5078 dsl_dataset_rele(new, FTAG); 5079 dsl_pool_rele(dp, FTAG); 5080 return (error); 5081 } 5082 5083 error = dsl_dataset_space_wouldfree(old, new, &used, &comp, &uncomp); 5084 dsl_dataset_rele(old, FTAG); 5085 dsl_dataset_rele(new, FTAG); 5086 dsl_pool_rele(dp, FTAG); 5087 fnvlist_add_uint64(outnvl, "used", used); 5088 fnvlist_add_uint64(outnvl, "compressed", comp); 5089 fnvlist_add_uint64(outnvl, "uncompressed", uncomp); 5090 return (error); 5091 } 5092 5093 /* 5094 * innvl: { 5095 * "fd" -> file descriptor to write stream to (int32) 5096 * (optional) "fromsnap" -> full snap name to send an incremental from 5097 * } 5098 * 5099 * outnvl is unused 5100 */ 5101 /* ARGSUSED */ 5102 static int 5103 zfs_ioc_send_new(const char *snapname, nvlist_t *innvl, nvlist_t *outnvl) 5104 { 5105 int error; 5106 offset_t off; 5107 char *fromname = NULL; 5108 int fd; 5109 5110 error = nvlist_lookup_int32(innvl, "fd", &fd); 5111 if (error != 0) 5112 return (SET_ERROR(EINVAL)); 5113 5114 (void) nvlist_lookup_string(innvl, "fromsnap", &fromname); 5115 5116 file_t *fp = getf(fd); 5117 if (fp == NULL) 5118 return (SET_ERROR(EBADF)); 5119 5120 off = fp->f_offset; 5121 error = dmu_send(snapname, fromname, fd, fp->f_vnode, &off); 5122 5123 if (VOP_SEEK(fp->f_vnode, fp->f_offset, &off, NULL) == 0) 5124 fp->f_offset = off; 5125 releasef(fd); 5126 return (error); 5127 } 5128 5129 /* 5130 * Determine approximately how large a zfs send stream will be -- the number 5131 * of bytes that will be written to the fd supplied to zfs_ioc_send_new(). 5132 * 5133 * innvl: { 5134 * (optional) "fromsnap" -> full snap name to send an incremental from 5135 * } 5136 * 5137 * outnvl: { 5138 * "space" -> bytes of space (uint64) 5139 * } 5140 */ 5141 static int 5142 zfs_ioc_send_space(const char *snapname, nvlist_t *innvl, nvlist_t *outnvl) 5143 { 5144 dsl_pool_t *dp; 5145 dsl_dataset_t *fromsnap = NULL; 5146 dsl_dataset_t *tosnap; 5147 int error; 5148 char *fromname; 5149 uint64_t space; 5150 5151 error = dsl_pool_hold(snapname, FTAG, &dp); 5152 if (error != 0) 5153 return (error); 5154 5155 error = dsl_dataset_hold(dp, snapname, FTAG, &tosnap); 5156 if (error != 0) { 5157 dsl_pool_rele(dp, FTAG); 5158 return (error); 5159 } 5160 5161 error = nvlist_lookup_string(innvl, "fromsnap", &fromname); 5162 if (error == 0) { 5163 error = dsl_dataset_hold(dp, fromname, FTAG, &fromsnap); 5164 if (error != 0) { 5165 dsl_dataset_rele(tosnap, FTAG); 5166 dsl_pool_rele(dp, FTAG); 5167 return (error); 5168 } 5169 } 5170 5171 error = dmu_send_estimate(tosnap, fromsnap, &space); 5172 fnvlist_add_uint64(outnvl, "space", space); 5173 5174 if (fromsnap != NULL) 5175 dsl_dataset_rele(fromsnap, FTAG); 5176 dsl_dataset_rele(tosnap, FTAG); 5177 dsl_pool_rele(dp, FTAG); 5178 return (error); 5179 } 5180 5181 5182 static zfs_ioc_vec_t zfs_ioc_vec[ZFS_IOC_LAST - ZFS_IOC_FIRST]; 5183 5184 static void 5185 zfs_ioctl_register_legacy(zfs_ioc_t ioc, zfs_ioc_legacy_func_t *func, 5186 zfs_secpolicy_func_t *secpolicy, zfs_ioc_namecheck_t namecheck, 5187 boolean_t log_history, zfs_ioc_poolcheck_t pool_check) 5188 { 5189 zfs_ioc_vec_t *vec = &zfs_ioc_vec[ioc - ZFS_IOC_FIRST]; 5190 5191 ASSERT3U(ioc, >=, ZFS_IOC_FIRST); 5192 ASSERT3U(ioc, <, ZFS_IOC_LAST); 5193 ASSERT3P(vec->zvec_legacy_func, ==, NULL); 5194 ASSERT3P(vec->zvec_func, ==, NULL); 5195 5196 vec->zvec_legacy_func = func; 5197 vec->zvec_secpolicy = secpolicy; 5198 vec->zvec_namecheck = namecheck; 5199 vec->zvec_allow_log = log_history; 5200 vec->zvec_pool_check = pool_check; 5201 } 5202 5203 /* 5204 * See the block comment at the beginning of this file for details on 5205 * each argument to this function. 5206 */ 5207 static void 5208 zfs_ioctl_register(const char *name, zfs_ioc_t ioc, zfs_ioc_func_t *func, 5209 zfs_secpolicy_func_t *secpolicy, zfs_ioc_namecheck_t namecheck, 5210 zfs_ioc_poolcheck_t pool_check, boolean_t smush_outnvlist, 5211 boolean_t allow_log) 5212 { 5213 zfs_ioc_vec_t *vec = &zfs_ioc_vec[ioc - ZFS_IOC_FIRST]; 5214 5215 ASSERT3U(ioc, >=, ZFS_IOC_FIRST); 5216 ASSERT3U(ioc, <, ZFS_IOC_LAST); 5217 ASSERT3P(vec->zvec_legacy_func, ==, NULL); 5218 ASSERT3P(vec->zvec_func, ==, NULL); 5219 5220 /* if we are logging, the name must be valid */ 5221 ASSERT(!allow_log || namecheck != NO_NAME); 5222 5223 vec->zvec_name = name; 5224 vec->zvec_func = func; 5225 vec->zvec_secpolicy = secpolicy; 5226 vec->zvec_namecheck = namecheck; 5227 vec->zvec_pool_check = pool_check; 5228 vec->zvec_smush_outnvlist = smush_outnvlist; 5229 vec->zvec_allow_log = allow_log; 5230 } 5231 5232 static void 5233 zfs_ioctl_register_pool(zfs_ioc_t ioc, zfs_ioc_legacy_func_t *func, 5234 zfs_secpolicy_func_t *secpolicy, boolean_t log_history, 5235 zfs_ioc_poolcheck_t pool_check) 5236 { 5237 zfs_ioctl_register_legacy(ioc, func, secpolicy, 5238 POOL_NAME, log_history, pool_check); 5239 } 5240 5241 static void 5242 zfs_ioctl_register_dataset_nolog(zfs_ioc_t ioc, zfs_ioc_legacy_func_t *func, 5243 zfs_secpolicy_func_t *secpolicy, zfs_ioc_poolcheck_t pool_check) 5244 { 5245 zfs_ioctl_register_legacy(ioc, func, secpolicy, 5246 DATASET_NAME, B_FALSE, pool_check); 5247 } 5248 5249 static void 5250 zfs_ioctl_register_pool_modify(zfs_ioc_t ioc, zfs_ioc_legacy_func_t *func) 5251 { 5252 zfs_ioctl_register_legacy(ioc, func, zfs_secpolicy_config, 5253 POOL_NAME, B_TRUE, POOL_CHECK_SUSPENDED | POOL_CHECK_READONLY); 5254 } 5255 5256 static void 5257 zfs_ioctl_register_pool_meta(zfs_ioc_t ioc, zfs_ioc_legacy_func_t *func, 5258 zfs_secpolicy_func_t *secpolicy) 5259 { 5260 zfs_ioctl_register_legacy(ioc, func, secpolicy, 5261 NO_NAME, B_FALSE, POOL_CHECK_NONE); 5262 } 5263 5264 static void 5265 zfs_ioctl_register_dataset_read_secpolicy(zfs_ioc_t ioc, 5266 zfs_ioc_legacy_func_t *func, zfs_secpolicy_func_t *secpolicy) 5267 { 5268 zfs_ioctl_register_legacy(ioc, func, secpolicy, 5269 DATASET_NAME, B_FALSE, POOL_CHECK_SUSPENDED); 5270 } 5271 5272 static void 5273 zfs_ioctl_register_dataset_read(zfs_ioc_t ioc, zfs_ioc_legacy_func_t *func) 5274 { 5275 zfs_ioctl_register_dataset_read_secpolicy(ioc, func, 5276 zfs_secpolicy_read); 5277 } 5278 5279 static void 5280 zfs_ioctl_register_dataset_modify(zfs_ioc_t ioc, zfs_ioc_legacy_func_t *func, 5281 zfs_secpolicy_func_t *secpolicy) 5282 { 5283 zfs_ioctl_register_legacy(ioc, func, secpolicy, 5284 DATASET_NAME, B_TRUE, POOL_CHECK_SUSPENDED | POOL_CHECK_READONLY); 5285 } 5286 5287 static void 5288 zfs_ioctl_init(void) 5289 { 5290 zfs_ioctl_register("snapshot", ZFS_IOC_SNAPSHOT, 5291 zfs_ioc_snapshot, zfs_secpolicy_snapshot, POOL_NAME, 5292 POOL_CHECK_SUSPENDED | POOL_CHECK_READONLY, B_TRUE, B_TRUE); 5293 5294 zfs_ioctl_register("log_history", ZFS_IOC_LOG_HISTORY, 5295 zfs_ioc_log_history, zfs_secpolicy_log_history, NO_NAME, 5296 POOL_CHECK_SUSPENDED | POOL_CHECK_READONLY, B_FALSE, B_FALSE); 5297 5298 zfs_ioctl_register("space_snaps", ZFS_IOC_SPACE_SNAPS, 5299 zfs_ioc_space_snaps, zfs_secpolicy_read, DATASET_NAME, 5300 POOL_CHECK_SUSPENDED, B_FALSE, B_FALSE); 5301 5302 zfs_ioctl_register("send", ZFS_IOC_SEND_NEW, 5303 zfs_ioc_send_new, zfs_secpolicy_send_new, DATASET_NAME, 5304 POOL_CHECK_SUSPENDED, B_FALSE, B_FALSE); 5305 5306 zfs_ioctl_register("send_space", ZFS_IOC_SEND_SPACE, 5307 zfs_ioc_send_space, zfs_secpolicy_read, DATASET_NAME, 5308 POOL_CHECK_SUSPENDED, B_FALSE, B_FALSE); 5309 5310 zfs_ioctl_register("create", ZFS_IOC_CREATE, 5311 zfs_ioc_create, zfs_secpolicy_create_clone, DATASET_NAME, 5312 POOL_CHECK_SUSPENDED | POOL_CHECK_READONLY, B_TRUE, B_TRUE); 5313 5314 zfs_ioctl_register("clone", ZFS_IOC_CLONE, 5315 zfs_ioc_clone, zfs_secpolicy_create_clone, DATASET_NAME, 5316 POOL_CHECK_SUSPENDED | POOL_CHECK_READONLY, B_TRUE, B_TRUE); 5317 5318 zfs_ioctl_register("destroy_snaps", ZFS_IOC_DESTROY_SNAPS, 5319 zfs_ioc_destroy_snaps, zfs_secpolicy_destroy_snaps, POOL_NAME, 5320 POOL_CHECK_SUSPENDED | POOL_CHECK_READONLY, B_TRUE, B_TRUE); 5321 5322 zfs_ioctl_register("hold", ZFS_IOC_HOLD, 5323 zfs_ioc_hold, zfs_secpolicy_hold, POOL_NAME, 5324 POOL_CHECK_SUSPENDED | POOL_CHECK_READONLY, B_TRUE, B_TRUE); 5325 zfs_ioctl_register("release", ZFS_IOC_RELEASE, 5326 zfs_ioc_release, zfs_secpolicy_release, POOL_NAME, 5327 POOL_CHECK_SUSPENDED | POOL_CHECK_READONLY, B_TRUE, B_TRUE); 5328 5329 zfs_ioctl_register("get_holds", ZFS_IOC_GET_HOLDS, 5330 zfs_ioc_get_holds, zfs_secpolicy_read, DATASET_NAME, 5331 POOL_CHECK_SUSPENDED, B_FALSE, B_FALSE); 5332 5333 /* IOCTLS that use the legacy function signature */ 5334 5335 zfs_ioctl_register_legacy(ZFS_IOC_POOL_FREEZE, zfs_ioc_pool_freeze, 5336 zfs_secpolicy_config, NO_NAME, B_FALSE, POOL_CHECK_READONLY); 5337 5338 zfs_ioctl_register_pool(ZFS_IOC_POOL_CREATE, zfs_ioc_pool_create, 5339 zfs_secpolicy_config, B_TRUE, POOL_CHECK_NONE); 5340 zfs_ioctl_register_pool_modify(ZFS_IOC_POOL_SCAN, 5341 zfs_ioc_pool_scan); 5342 zfs_ioctl_register_pool_modify(ZFS_IOC_POOL_UPGRADE, 5343 zfs_ioc_pool_upgrade); 5344 zfs_ioctl_register_pool_modify(ZFS_IOC_VDEV_ADD, 5345 zfs_ioc_vdev_add); 5346 zfs_ioctl_register_pool_modify(ZFS_IOC_VDEV_REMOVE, 5347 zfs_ioc_vdev_remove); 5348 zfs_ioctl_register_pool_modify(ZFS_IOC_VDEV_SET_STATE, 5349 zfs_ioc_vdev_set_state); 5350 zfs_ioctl_register_pool_modify(ZFS_IOC_VDEV_ATTACH, 5351 zfs_ioc_vdev_attach); 5352 zfs_ioctl_register_pool_modify(ZFS_IOC_VDEV_DETACH, 5353 zfs_ioc_vdev_detach); 5354 zfs_ioctl_register_pool_modify(ZFS_IOC_VDEV_SETPATH, 5355 zfs_ioc_vdev_setpath); 5356 zfs_ioctl_register_pool_modify(ZFS_IOC_VDEV_SETFRU, 5357 zfs_ioc_vdev_setfru); 5358 zfs_ioctl_register_pool_modify(ZFS_IOC_POOL_SET_PROPS, 5359 zfs_ioc_pool_set_props); 5360 zfs_ioctl_register_pool_modify(ZFS_IOC_VDEV_SPLIT, 5361 zfs_ioc_vdev_split); 5362 zfs_ioctl_register_pool_modify(ZFS_IOC_POOL_REGUID, 5363 zfs_ioc_pool_reguid); 5364 5365 zfs_ioctl_register_pool_meta(ZFS_IOC_POOL_CONFIGS, 5366 zfs_ioc_pool_configs, zfs_secpolicy_none); 5367 zfs_ioctl_register_pool_meta(ZFS_IOC_POOL_TRYIMPORT, 5368 zfs_ioc_pool_tryimport, zfs_secpolicy_config); 5369 zfs_ioctl_register_pool_meta(ZFS_IOC_INJECT_FAULT, 5370 zfs_ioc_inject_fault, zfs_secpolicy_inject); 5371 zfs_ioctl_register_pool_meta(ZFS_IOC_CLEAR_FAULT, 5372 zfs_ioc_clear_fault, zfs_secpolicy_inject); 5373 zfs_ioctl_register_pool_meta(ZFS_IOC_INJECT_LIST_NEXT, 5374 zfs_ioc_inject_list_next, zfs_secpolicy_inject); 5375 5376 /* 5377 * pool destroy, and export don't log the history as part of 5378 * zfsdev_ioctl, but rather zfs_ioc_pool_export 5379 * does the logging of those commands. 5380 */ 5381 zfs_ioctl_register_pool(ZFS_IOC_POOL_DESTROY, zfs_ioc_pool_destroy, 5382 zfs_secpolicy_config, B_FALSE, POOL_CHECK_NONE); 5383 zfs_ioctl_register_pool(ZFS_IOC_POOL_EXPORT, zfs_ioc_pool_export, 5384 zfs_secpolicy_config, B_FALSE, POOL_CHECK_NONE); 5385 5386 zfs_ioctl_register_pool(ZFS_IOC_POOL_STATS, zfs_ioc_pool_stats, 5387 zfs_secpolicy_read, B_FALSE, POOL_CHECK_NONE); 5388 zfs_ioctl_register_pool(ZFS_IOC_POOL_GET_PROPS, zfs_ioc_pool_get_props, 5389 zfs_secpolicy_read, B_FALSE, POOL_CHECK_NONE); 5390 5391 zfs_ioctl_register_pool(ZFS_IOC_ERROR_LOG, zfs_ioc_error_log, 5392 zfs_secpolicy_inject, B_FALSE, POOL_CHECK_SUSPENDED); 5393 zfs_ioctl_register_pool(ZFS_IOC_DSOBJ_TO_DSNAME, 5394 zfs_ioc_dsobj_to_dsname, 5395 zfs_secpolicy_diff, B_FALSE, POOL_CHECK_SUSPENDED); 5396 zfs_ioctl_register_pool(ZFS_IOC_POOL_GET_HISTORY, 5397 zfs_ioc_pool_get_history, 5398 zfs_secpolicy_config, B_FALSE, POOL_CHECK_SUSPENDED); 5399 5400 zfs_ioctl_register_pool(ZFS_IOC_POOL_IMPORT, zfs_ioc_pool_import, 5401 zfs_secpolicy_config, B_TRUE, POOL_CHECK_NONE); 5402 5403 zfs_ioctl_register_pool(ZFS_IOC_CLEAR, zfs_ioc_clear, 5404 zfs_secpolicy_config, B_TRUE, POOL_CHECK_SUSPENDED); 5405 zfs_ioctl_register_pool(ZFS_IOC_POOL_REOPEN, zfs_ioc_pool_reopen, 5406 zfs_secpolicy_config, B_TRUE, POOL_CHECK_SUSPENDED); 5407 5408 zfs_ioctl_register_dataset_read(ZFS_IOC_SPACE_WRITTEN, 5409 zfs_ioc_space_written); 5410 zfs_ioctl_register_dataset_read(ZFS_IOC_OBJSET_RECVD_PROPS, 5411 zfs_ioc_objset_recvd_props); 5412 zfs_ioctl_register_dataset_read(ZFS_IOC_NEXT_OBJ, 5413 zfs_ioc_next_obj); 5414 zfs_ioctl_register_dataset_read(ZFS_IOC_GET_FSACL, 5415 zfs_ioc_get_fsacl); 5416 zfs_ioctl_register_dataset_read(ZFS_IOC_OBJSET_STATS, 5417 zfs_ioc_objset_stats); 5418 zfs_ioctl_register_dataset_read(ZFS_IOC_OBJSET_ZPLPROPS, 5419 zfs_ioc_objset_zplprops); 5420 zfs_ioctl_register_dataset_read(ZFS_IOC_DATASET_LIST_NEXT, 5421 zfs_ioc_dataset_list_next); 5422 zfs_ioctl_register_dataset_read(ZFS_IOC_SNAPSHOT_LIST_NEXT, 5423 zfs_ioc_snapshot_list_next); 5424 zfs_ioctl_register_dataset_read(ZFS_IOC_SEND_PROGRESS, 5425 zfs_ioc_send_progress); 5426 5427 zfs_ioctl_register_dataset_read_secpolicy(ZFS_IOC_DIFF, 5428 zfs_ioc_diff, zfs_secpolicy_diff); 5429 zfs_ioctl_register_dataset_read_secpolicy(ZFS_IOC_OBJ_TO_STATS, 5430 zfs_ioc_obj_to_stats, zfs_secpolicy_diff); 5431 zfs_ioctl_register_dataset_read_secpolicy(ZFS_IOC_OBJ_TO_PATH, 5432 zfs_ioc_obj_to_path, zfs_secpolicy_diff); 5433 zfs_ioctl_register_dataset_read_secpolicy(ZFS_IOC_USERSPACE_ONE, 5434 zfs_ioc_userspace_one, zfs_secpolicy_userspace_one); 5435 zfs_ioctl_register_dataset_read_secpolicy(ZFS_IOC_USERSPACE_MANY, 5436 zfs_ioc_userspace_many, zfs_secpolicy_userspace_many); 5437 zfs_ioctl_register_dataset_read_secpolicy(ZFS_IOC_SEND, 5438 zfs_ioc_send, zfs_secpolicy_send); 5439 5440 zfs_ioctl_register_dataset_modify(ZFS_IOC_SET_PROP, zfs_ioc_set_prop, 5441 zfs_secpolicy_none); 5442 zfs_ioctl_register_dataset_modify(ZFS_IOC_DESTROY, zfs_ioc_destroy, 5443 zfs_secpolicy_destroy); 5444 zfs_ioctl_register_dataset_modify(ZFS_IOC_ROLLBACK, zfs_ioc_rollback, 5445 zfs_secpolicy_rollback); 5446 zfs_ioctl_register_dataset_modify(ZFS_IOC_RENAME, zfs_ioc_rename, 5447 zfs_secpolicy_rename); 5448 zfs_ioctl_register_dataset_modify(ZFS_IOC_RECV, zfs_ioc_recv, 5449 zfs_secpolicy_recv); 5450 zfs_ioctl_register_dataset_modify(ZFS_IOC_PROMOTE, zfs_ioc_promote, 5451 zfs_secpolicy_promote); 5452 zfs_ioctl_register_dataset_modify(ZFS_IOC_INHERIT_PROP, 5453 zfs_ioc_inherit_prop, zfs_secpolicy_inherit_prop); 5454 zfs_ioctl_register_dataset_modify(ZFS_IOC_SET_FSACL, zfs_ioc_set_fsacl, 5455 zfs_secpolicy_set_fsacl); 5456 5457 zfs_ioctl_register_dataset_nolog(ZFS_IOC_SHARE, zfs_ioc_share, 5458 zfs_secpolicy_share, POOL_CHECK_NONE); 5459 zfs_ioctl_register_dataset_nolog(ZFS_IOC_SMB_ACL, zfs_ioc_smb_acl, 5460 zfs_secpolicy_smb_acl, POOL_CHECK_NONE); 5461 zfs_ioctl_register_dataset_nolog(ZFS_IOC_USERSPACE_UPGRADE, 5462 zfs_ioc_userspace_upgrade, zfs_secpolicy_userspace_upgrade, 5463 POOL_CHECK_SUSPENDED | POOL_CHECK_READONLY); 5464 zfs_ioctl_register_dataset_nolog(ZFS_IOC_TMP_SNAPSHOT, 5465 zfs_ioc_tmp_snapshot, zfs_secpolicy_tmp_snapshot, 5466 POOL_CHECK_SUSPENDED | POOL_CHECK_READONLY); 5467 } 5468 5469 int 5470 pool_status_check(const char *name, zfs_ioc_namecheck_t type, 5471 zfs_ioc_poolcheck_t check) 5472 { 5473 spa_t *spa; 5474 int error; 5475 5476 ASSERT(type == POOL_NAME || type == DATASET_NAME); 5477 5478 if (check & POOL_CHECK_NONE) 5479 return (0); 5480 5481 error = spa_open(name, &spa, FTAG); 5482 if (error == 0) { 5483 if ((check & POOL_CHECK_SUSPENDED) && spa_suspended(spa)) 5484 error = SET_ERROR(EAGAIN); 5485 else if ((check & POOL_CHECK_READONLY) && !spa_writeable(spa)) 5486 error = SET_ERROR(EROFS); 5487 spa_close(spa, FTAG); 5488 } 5489 return (error); 5490 } 5491 5492 /* 5493 * Find a free minor number. 5494 */ 5495 minor_t 5496 zfsdev_minor_alloc(void) 5497 { 5498 static minor_t last_minor; 5499 minor_t m; 5500 5501 ASSERT(MUTEX_HELD(&zfsdev_state_lock)); 5502 5503 for (m = last_minor + 1; m != last_minor; m++) { 5504 if (m > ZFSDEV_MAX_MINOR) 5505 m = 1; 5506 if (ddi_get_soft_state(zfsdev_state, m) == NULL) { 5507 last_minor = m; 5508 return (m); 5509 } 5510 } 5511 5512 return (0); 5513 } 5514 5515 static int 5516 zfs_ctldev_init(dev_t *devp) 5517 { 5518 minor_t minor; 5519 zfs_soft_state_t *zs; 5520 5521 ASSERT(MUTEX_HELD(&zfsdev_state_lock)); 5522 ASSERT(getminor(*devp) == 0); 5523 5524 minor = zfsdev_minor_alloc(); 5525 if (minor == 0) 5526 return (SET_ERROR(ENXIO)); 5527 5528 if (ddi_soft_state_zalloc(zfsdev_state, minor) != DDI_SUCCESS) 5529 return (SET_ERROR(EAGAIN)); 5530 5531 *devp = makedevice(getemajor(*devp), minor); 5532 5533 zs = ddi_get_soft_state(zfsdev_state, minor); 5534 zs->zss_type = ZSST_CTLDEV; 5535 zfs_onexit_init((zfs_onexit_t **)&zs->zss_data); 5536 5537 return (0); 5538 } 5539 5540 static void 5541 zfs_ctldev_destroy(zfs_onexit_t *zo, minor_t minor) 5542 { 5543 ASSERT(MUTEX_HELD(&zfsdev_state_lock)); 5544 5545 zfs_onexit_destroy(zo); 5546 ddi_soft_state_free(zfsdev_state, minor); 5547 } 5548 5549 void * 5550 zfsdev_get_soft_state(minor_t minor, enum zfs_soft_state_type which) 5551 { 5552 zfs_soft_state_t *zp; 5553 5554 zp = ddi_get_soft_state(zfsdev_state, minor); 5555 if (zp == NULL || zp->zss_type != which) 5556 return (NULL); 5557 5558 return (zp->zss_data); 5559 } 5560 5561 static int 5562 zfsdev_open(dev_t *devp, int flag, int otyp, cred_t *cr) 5563 { 5564 int error = 0; 5565 5566 if (getminor(*devp) != 0) 5567 return (zvol_open(devp, flag, otyp, cr)); 5568 5569 /* This is the control device. Allocate a new minor if requested. */ 5570 if (flag & FEXCL) { 5571 mutex_enter(&zfsdev_state_lock); 5572 error = zfs_ctldev_init(devp); 5573 mutex_exit(&zfsdev_state_lock); 5574 } 5575 5576 return (error); 5577 } 5578 5579 static int 5580 zfsdev_close(dev_t dev, int flag, int otyp, cred_t *cr) 5581 { 5582 zfs_onexit_t *zo; 5583 minor_t minor = getminor(dev); 5584 5585 if (minor == 0) 5586 return (0); 5587 5588 mutex_enter(&zfsdev_state_lock); 5589 zo = zfsdev_get_soft_state(minor, ZSST_CTLDEV); 5590 if (zo == NULL) { 5591 mutex_exit(&zfsdev_state_lock); 5592 return (zvol_close(dev, flag, otyp, cr)); 5593 } 5594 zfs_ctldev_destroy(zo, minor); 5595 mutex_exit(&zfsdev_state_lock); 5596 5597 return (0); 5598 } 5599 5600 static int 5601 zfsdev_ioctl(dev_t dev, int cmd, intptr_t arg, int flag, cred_t *cr, int *rvalp) 5602 { 5603 zfs_cmd_t *zc; 5604 uint_t vecnum; 5605 int error, rc, len; 5606 minor_t minor = getminor(dev); 5607 const zfs_ioc_vec_t *vec; 5608 char *saved_poolname = NULL; 5609 nvlist_t *innvl = NULL; 5610 5611 if (minor != 0 && 5612 zfsdev_get_soft_state(minor, ZSST_CTLDEV) == NULL) 5613 return (zvol_ioctl(dev, cmd, arg, flag, cr, rvalp)); 5614 5615 vecnum = cmd - ZFS_IOC_FIRST; 5616 ASSERT3U(getmajor(dev), ==, ddi_driver_major(zfs_dip)); 5617 5618 if (vecnum >= sizeof (zfs_ioc_vec) / sizeof (zfs_ioc_vec[0])) 5619 return (SET_ERROR(EINVAL)); 5620 vec = &zfs_ioc_vec[vecnum]; 5621 5622 zc = kmem_zalloc(sizeof (zfs_cmd_t), KM_SLEEP); 5623 5624 error = ddi_copyin((void *)arg, zc, sizeof (zfs_cmd_t), flag); 5625 if (error != 0) { 5626 error = SET_ERROR(EFAULT); 5627 goto out; 5628 } 5629 5630 zc->zc_iflags = flag & FKIOCTL; 5631 if (zc->zc_nvlist_src_size != 0) { 5632 error = get_nvlist(zc->zc_nvlist_src, zc->zc_nvlist_src_size, 5633 zc->zc_iflags, &innvl); 5634 if (error != 0) 5635 goto out; 5636 } 5637 5638 /* 5639 * Ensure that all pool/dataset names are valid before we pass down to 5640 * the lower layers. 5641 */ 5642 zc->zc_name[sizeof (zc->zc_name) - 1] = '\0'; 5643 switch (vec->zvec_namecheck) { 5644 case POOL_NAME: 5645 if (pool_namecheck(zc->zc_name, NULL, NULL) != 0) 5646 error = SET_ERROR(EINVAL); 5647 else 5648 error = pool_status_check(zc->zc_name, 5649 vec->zvec_namecheck, vec->zvec_pool_check); 5650 break; 5651 5652 case DATASET_NAME: 5653 if (dataset_namecheck(zc->zc_name, NULL, NULL) != 0) 5654 error = SET_ERROR(EINVAL); 5655 else 5656 error = pool_status_check(zc->zc_name, 5657 vec->zvec_namecheck, vec->zvec_pool_check); 5658 break; 5659 5660 case NO_NAME: 5661 break; 5662 } 5663 5664 5665 if (error == 0 && !(flag & FKIOCTL)) 5666 error = vec->zvec_secpolicy(zc, innvl, cr); 5667 5668 if (error != 0) 5669 goto out; 5670 5671 /* legacy ioctls can modify zc_name */ 5672 len = strcspn(zc->zc_name, "/@") + 1; 5673 saved_poolname = kmem_alloc(len, KM_SLEEP); 5674 (void) strlcpy(saved_poolname, zc->zc_name, len); 5675 5676 if (vec->zvec_func != NULL) { 5677 nvlist_t *outnvl; 5678 int puterror = 0; 5679 spa_t *spa; 5680 nvlist_t *lognv = NULL; 5681 5682 ASSERT(vec->zvec_legacy_func == NULL); 5683 5684 /* 5685 * Add the innvl to the lognv before calling the func, 5686 * in case the func changes the innvl. 5687 */ 5688 if (vec->zvec_allow_log) { 5689 lognv = fnvlist_alloc(); 5690 fnvlist_add_string(lognv, ZPOOL_HIST_IOCTL, 5691 vec->zvec_name); 5692 if (!nvlist_empty(innvl)) { 5693 fnvlist_add_nvlist(lognv, ZPOOL_HIST_INPUT_NVL, 5694 innvl); 5695 } 5696 } 5697 5698 outnvl = fnvlist_alloc(); 5699 error = vec->zvec_func(zc->zc_name, innvl, outnvl); 5700 5701 if (error == 0 && vec->zvec_allow_log && 5702 spa_open(zc->zc_name, &spa, FTAG) == 0) { 5703 if (!nvlist_empty(outnvl)) { 5704 fnvlist_add_nvlist(lognv, ZPOOL_HIST_OUTPUT_NVL, 5705 outnvl); 5706 } 5707 (void) spa_history_log_nvl(spa, lognv); 5708 spa_close(spa, FTAG); 5709 } 5710 fnvlist_free(lognv); 5711 5712 if (!nvlist_empty(outnvl) || zc->zc_nvlist_dst_size != 0) { 5713 int smusherror = 0; 5714 if (vec->zvec_smush_outnvlist) { 5715 smusherror = nvlist_smush(outnvl, 5716 zc->zc_nvlist_dst_size); 5717 } 5718 if (smusherror == 0) 5719 puterror = put_nvlist(zc, outnvl); 5720 } 5721 5722 if (puterror != 0) 5723 error = puterror; 5724 5725 nvlist_free(outnvl); 5726 } else { 5727 error = vec->zvec_legacy_func(zc); 5728 } 5729 5730 out: 5731 nvlist_free(innvl); 5732 rc = ddi_copyout(zc, (void *)arg, sizeof (zfs_cmd_t), flag); 5733 if (error == 0 && rc != 0) 5734 error = SET_ERROR(EFAULT); 5735 if (error == 0 && vec->zvec_allow_log) { 5736 char *s = tsd_get(zfs_allow_log_key); 5737 if (s != NULL) 5738 strfree(s); 5739 (void) tsd_set(zfs_allow_log_key, saved_poolname); 5740 } else { 5741 if (saved_poolname != NULL) 5742 strfree(saved_poolname); 5743 } 5744 5745 kmem_free(zc, sizeof (zfs_cmd_t)); 5746 return (error); 5747 } 5748 5749 static int 5750 zfs_attach(dev_info_t *dip, ddi_attach_cmd_t cmd) 5751 { 5752 if (cmd != DDI_ATTACH) 5753 return (DDI_FAILURE); 5754 5755 if (ddi_create_minor_node(dip, "zfs", S_IFCHR, 0, 5756 DDI_PSEUDO, 0) == DDI_FAILURE) 5757 return (DDI_FAILURE); 5758 5759 zfs_dip = dip; 5760 5761 ddi_report_dev(dip); 5762 5763 return (DDI_SUCCESS); 5764 } 5765 5766 static int 5767 zfs_detach(dev_info_t *dip, ddi_detach_cmd_t cmd) 5768 { 5769 if (spa_busy() || zfs_busy() || zvol_busy()) 5770 return (DDI_FAILURE); 5771 5772 if (cmd != DDI_DETACH) 5773 return (DDI_FAILURE); 5774 5775 zfs_dip = NULL; 5776 5777 ddi_prop_remove_all(dip); 5778 ddi_remove_minor_node(dip, NULL); 5779 5780 return (DDI_SUCCESS); 5781 } 5782 5783 /*ARGSUSED*/ 5784 static int 5785 zfs_info(dev_info_t *dip, ddi_info_cmd_t infocmd, void *arg, void **result) 5786 { 5787 switch (infocmd) { 5788 case DDI_INFO_DEVT2DEVINFO: 5789 *result = zfs_dip; 5790 return (DDI_SUCCESS); 5791 5792 case DDI_INFO_DEVT2INSTANCE: 5793 *result = (void *)0; 5794 return (DDI_SUCCESS); 5795 } 5796 5797 return (DDI_FAILURE); 5798 } 5799 5800 /* 5801 * OK, so this is a little weird. 5802 * 5803 * /dev/zfs is the control node, i.e. minor 0. 5804 * /dev/zvol/[r]dsk/pool/dataset are the zvols, minor > 0. 5805 * 5806 * /dev/zfs has basically nothing to do except serve up ioctls, 5807 * so most of the standard driver entry points are in zvol.c. 5808 */ 5809 static struct cb_ops zfs_cb_ops = { 5810 zfsdev_open, /* open */ 5811 zfsdev_close, /* close */ 5812 zvol_strategy, /* strategy */ 5813 nodev, /* print */ 5814 zvol_dump, /* dump */ 5815 zvol_read, /* read */ 5816 zvol_write, /* write */ 5817 zfsdev_ioctl, /* ioctl */ 5818 nodev, /* devmap */ 5819 nodev, /* mmap */ 5820 nodev, /* segmap */ 5821 nochpoll, /* poll */ 5822 ddi_prop_op, /* prop_op */ 5823 NULL, /* streamtab */ 5824 D_NEW | D_MP | D_64BIT, /* Driver compatibility flag */ 5825 CB_REV, /* version */ 5826 nodev, /* async read */ 5827 nodev, /* async write */ 5828 }; 5829 5830 static struct dev_ops zfs_dev_ops = { 5831 DEVO_REV, /* version */ 5832 0, /* refcnt */ 5833 zfs_info, /* info */ 5834 nulldev, /* identify */ 5835 nulldev, /* probe */ 5836 zfs_attach, /* attach */ 5837 zfs_detach, /* detach */ 5838 nodev, /* reset */ 5839 &zfs_cb_ops, /* driver operations */ 5840 NULL, /* no bus operations */ 5841 NULL, /* power */ 5842 ddi_quiesce_not_needed, /* quiesce */ 5843 }; 5844 5845 static struct modldrv zfs_modldrv = { 5846 &mod_driverops, 5847 "ZFS storage pool", 5848 &zfs_dev_ops 5849 }; 5850 5851 static struct modlinkage modlinkage = { 5852 MODREV_1, 5853 (void *)&zfs_modlfs, 5854 (void *)&zfs_modldrv, 5855 NULL 5856 }; 5857 5858 static void 5859 zfs_allow_log_destroy(void *arg) 5860 { 5861 char *poolname = arg; 5862 strfree(poolname); 5863 } 5864 5865 int 5866 _init(void) 5867 { 5868 int error; 5869 5870 spa_init(FREAD | FWRITE); 5871 zfs_init(); 5872 zvol_init(); 5873 zfs_ioctl_init(); 5874 5875 if ((error = mod_install(&modlinkage)) != 0) { 5876 zvol_fini(); 5877 zfs_fini(); 5878 spa_fini(); 5879 return (error); 5880 } 5881 5882 tsd_create(&zfs_fsyncer_key, NULL); 5883 tsd_create(&rrw_tsd_key, rrw_tsd_destroy); 5884 tsd_create(&zfs_allow_log_key, zfs_allow_log_destroy); 5885 5886 error = ldi_ident_from_mod(&modlinkage, &zfs_li); 5887 ASSERT(error == 0); 5888 mutex_init(&zfs_share_lock, NULL, MUTEX_DEFAULT, NULL); 5889 5890 return (0); 5891 } 5892 5893 int 5894 _fini(void) 5895 { 5896 int error; 5897 5898 if (spa_busy() || zfs_busy() || zvol_busy() || zio_injection_enabled) 5899 return (SET_ERROR(EBUSY)); 5900 5901 if ((error = mod_remove(&modlinkage)) != 0) 5902 return (error); 5903 5904 zvol_fini(); 5905 zfs_fini(); 5906 spa_fini(); 5907 if (zfs_nfsshare_inited) 5908 (void) ddi_modclose(nfs_mod); 5909 if (zfs_smbshare_inited) 5910 (void) ddi_modclose(smbsrv_mod); 5911 if (zfs_nfsshare_inited || zfs_smbshare_inited) 5912 (void) ddi_modclose(sharefs_mod); 5913 5914 tsd_destroy(&zfs_fsyncer_key); 5915 ldi_ident_release(zfs_li); 5916 zfs_li = NULL; 5917 mutex_destroy(&zfs_share_lock); 5918 5919 return (error); 5920 } 5921 5922 int 5923 _info(struct modinfo *modinfop) 5924 { 5925 return (mod_info(&modlinkage, modinfop)); 5926 } 5927