1 /* 2 * CDDL HEADER START 3 * 4 * The contents of this file are subject to the terms of the 5 * Common Development and Distribution License (the "License"). 6 * You may not use this file except in compliance with the License. 7 * 8 * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE 9 * or http://www.opensolaris.org/os/licensing. 10 * See the License for the specific language governing permissions 11 * and limitations under the License. 12 * 13 * When distributing Covered Code, include this CDDL HEADER in each 14 * file and include the License file at usr/src/OPENSOLARIS.LICENSE. 15 * If applicable, add the following below this CDDL HEADER, with the 16 * fields enclosed by brackets "[]" replaced with your own identifying 17 * information: Portions Copyright [yyyy] [name of copyright owner] 18 * 19 * CDDL HEADER END 20 */ 21 22 /* 23 * Copyright (c) 2005, 2010, Oracle and/or its affiliates. All rights reserved. 24 * Copyright (c) 2011-2012 Pawel Jakub Dawidek. All rights reserved. 25 * Portions Copyright 2011 Martin Matuska 26 * Copyright 2015, OmniTI Computer Consulting, Inc. All rights reserved. 27 * Copyright 2015 Nexenta Systems, Inc. All rights reserved. 28 * Copyright (c) 2014, 2016 Joyent, Inc. All rights reserved. 29 * Copyright (c) 2011, 2017 by Delphix. All rights reserved. 30 * Copyright (c) 2013 by Saso Kiselkov. All rights reserved. 31 * Copyright (c) 2013 Steven Hartland. All rights reserved. 32 * Copyright (c) 2014 Integros [integros.com] 33 * Copyright 2016 Toomas Soome <tsoome@me.com> 34 * Copyright 2017 RackTop Systems. 35 * Copyright (c) 2017 Datto Inc. 36 */ 37 38 /* 39 * ZFS ioctls. 40 * 41 * This file handles the ioctls to /dev/zfs, used for configuring ZFS storage 42 * pools and filesystems, e.g. with /sbin/zfs and /sbin/zpool. 43 * 44 * There are two ways that we handle ioctls: the legacy way where almost 45 * all of the logic is in the ioctl callback, and the new way where most 46 * of the marshalling is handled in the common entry point, zfsdev_ioctl(). 47 * 48 * Non-legacy ioctls should be registered by calling 49 * zfs_ioctl_register() from zfs_ioctl_init(). The ioctl is invoked 50 * from userland by lzc_ioctl(). 51 * 52 * The registration arguments are as follows: 53 * 54 * const char *name 55 * The name of the ioctl. This is used for history logging. If the 56 * ioctl returns successfully (the callback returns 0), and allow_log 57 * is true, then a history log entry will be recorded with the input & 58 * output nvlists. The log entry can be printed with "zpool history -i". 59 * 60 * zfs_ioc_t ioc 61 * The ioctl request number, which userland will pass to ioctl(2). 62 * The ioctl numbers can change from release to release, because 63 * the caller (libzfs) must be matched to the kernel. 64 * 65 * zfs_secpolicy_func_t *secpolicy 66 * This function will be called before the zfs_ioc_func_t, to 67 * determine if this operation is permitted. It should return EPERM 68 * on failure, and 0 on success. Checks include determining if the 69 * dataset is visible in this zone, and if the user has either all 70 * zfs privileges in the zone (SYS_MOUNT), or has been granted permission 71 * to do this operation on this dataset with "zfs allow". 72 * 73 * zfs_ioc_namecheck_t namecheck 74 * This specifies what to expect in the zfs_cmd_t:zc_name -- a pool 75 * name, a dataset name, or nothing. If the name is not well-formed, 76 * the ioctl will fail and the callback will not be called. 77 * Therefore, the callback can assume that the name is well-formed 78 * (e.g. is null-terminated, doesn't have more than one '@' character, 79 * doesn't have invalid characters). 80 * 81 * zfs_ioc_poolcheck_t pool_check 82 * This specifies requirements on the pool state. If the pool does 83 * not meet them (is suspended or is readonly), the ioctl will fail 84 * and the callback will not be called. If any checks are specified 85 * (i.e. it is not POOL_CHECK_NONE), namecheck must not be NO_NAME. 86 * Multiple checks can be or-ed together (e.g. POOL_CHECK_SUSPENDED | 87 * POOL_CHECK_READONLY). 88 * 89 * boolean_t smush_outnvlist 90 * If smush_outnvlist is true, then the output is presumed to be a 91 * list of errors, and it will be "smushed" down to fit into the 92 * caller's buffer, by removing some entries and replacing them with a 93 * single "N_MORE_ERRORS" entry indicating how many were removed. See 94 * nvlist_smush() for details. If smush_outnvlist is false, and the 95 * outnvlist does not fit into the userland-provided buffer, then the 96 * ioctl will fail with ENOMEM. 97 * 98 * zfs_ioc_func_t *func 99 * The callback function that will perform the operation. 100 * 101 * The callback should return 0 on success, or an error number on 102 * failure. If the function fails, the userland ioctl will return -1, 103 * and errno will be set to the callback's return value. The callback 104 * will be called with the following arguments: 105 * 106 * const char *name 107 * The name of the pool or dataset to operate on, from 108 * zfs_cmd_t:zc_name. The 'namecheck' argument specifies the 109 * expected type (pool, dataset, or none). 110 * 111 * nvlist_t *innvl 112 * The input nvlist, deserialized from zfs_cmd_t:zc_nvlist_src. Or 113 * NULL if no input nvlist was provided. Changes to this nvlist are 114 * ignored. If the input nvlist could not be deserialized, the 115 * ioctl will fail and the callback will not be called. 116 * 117 * nvlist_t *outnvl 118 * The output nvlist, initially empty. The callback can fill it in, 119 * and it will be returned to userland by serializing it into 120 * zfs_cmd_t:zc_nvlist_dst. If it is non-empty, and serialization 121 * fails (e.g. because the caller didn't supply a large enough 122 * buffer), then the overall ioctl will fail. See the 123 * 'smush_nvlist' argument above for additional behaviors. 124 * 125 * There are two typical uses of the output nvlist: 126 * - To return state, e.g. property values. In this case, 127 * smush_outnvlist should be false. If the buffer was not large 128 * enough, the caller will reallocate a larger buffer and try 129 * the ioctl again. 130 * 131 * - To return multiple errors from an ioctl which makes on-disk 132 * changes. In this case, smush_outnvlist should be true. 133 * Ioctls which make on-disk modifications should generally not 134 * use the outnvl if they succeed, because the caller can not 135 * distinguish between the operation failing, and 136 * deserialization failing. 137 */ 138 139 #include <sys/types.h> 140 #include <sys/param.h> 141 #include <sys/errno.h> 142 #include <sys/uio.h> 143 #include <sys/buf.h> 144 #include <sys/modctl.h> 145 #include <sys/open.h> 146 #include <sys/file.h> 147 #include <sys/kmem.h> 148 #include <sys/conf.h> 149 #include <sys/cmn_err.h> 150 #include <sys/stat.h> 151 #include <sys/zfs_ioctl.h> 152 #include <sys/zfs_vfsops.h> 153 #include <sys/zfs_znode.h> 154 #include <sys/zap.h> 155 #include <sys/spa.h> 156 #include <sys/spa_impl.h> 157 #include <sys/vdev.h> 158 #include <sys/priv_impl.h> 159 #include <sys/dmu.h> 160 #include <sys/dsl_dir.h> 161 #include <sys/dsl_dataset.h> 162 #include <sys/dsl_prop.h> 163 #include <sys/dsl_deleg.h> 164 #include <sys/dmu_objset.h> 165 #include <sys/dmu_impl.h> 166 #include <sys/dmu_tx.h> 167 #include <sys/ddi.h> 168 #include <sys/sunddi.h> 169 #include <sys/sunldi.h> 170 #include <sys/policy.h> 171 #include <sys/zone.h> 172 #include <sys/nvpair.h> 173 #include <sys/pathname.h> 174 #include <sys/mount.h> 175 #include <sys/sdt.h> 176 #include <sys/fs/zfs.h> 177 #include <sys/zfs_ctldir.h> 178 #include <sys/zfs_dir.h> 179 #include <sys/zfs_onexit.h> 180 #include <sys/zvol.h> 181 #include <sys/dsl_scan.h> 182 #include <sharefs/share.h> 183 #include <sys/dmu_objset.h> 184 #include <sys/dmu_send.h> 185 #include <sys/dsl_destroy.h> 186 #include <sys/dsl_bookmark.h> 187 #include <sys/dsl_userhold.h> 188 #include <sys/zfeature.h> 189 #include <sys/zcp.h> 190 #include <sys/zio_checksum.h> 191 #include <sys/vdev_removal.h> 192 #include <sys/vdev_impl.h> 193 #include <sys/vdev_initialize.h> 194 195 #include "zfs_namecheck.h" 196 #include "zfs_prop.h" 197 #include "zfs_deleg.h" 198 #include "zfs_comutil.h" 199 200 #include "lua.h" 201 #include "lauxlib.h" 202 203 extern struct modlfs zfs_modlfs; 204 205 extern void zfs_init(void); 206 extern void zfs_fini(void); 207 208 ldi_ident_t zfs_li = NULL; 209 dev_info_t *zfs_dip; 210 211 uint_t zfs_fsyncer_key; 212 extern uint_t rrw_tsd_key; 213 static uint_t zfs_allow_log_key; 214 215 typedef int zfs_ioc_legacy_func_t(zfs_cmd_t *); 216 typedef int zfs_ioc_func_t(const char *, nvlist_t *, nvlist_t *); 217 typedef int zfs_secpolicy_func_t(zfs_cmd_t *, nvlist_t *, cred_t *); 218 219 typedef enum { 220 NO_NAME, 221 POOL_NAME, 222 DATASET_NAME 223 } zfs_ioc_namecheck_t; 224 225 typedef enum { 226 POOL_CHECK_NONE = 1 << 0, 227 POOL_CHECK_SUSPENDED = 1 << 1, 228 POOL_CHECK_READONLY = 1 << 2, 229 } zfs_ioc_poolcheck_t; 230 231 typedef struct zfs_ioc_vec { 232 zfs_ioc_legacy_func_t *zvec_legacy_func; 233 zfs_ioc_func_t *zvec_func; 234 zfs_secpolicy_func_t *zvec_secpolicy; 235 zfs_ioc_namecheck_t zvec_namecheck; 236 boolean_t zvec_allow_log; 237 zfs_ioc_poolcheck_t zvec_pool_check; 238 boolean_t zvec_smush_outnvlist; 239 const char *zvec_name; 240 } zfs_ioc_vec_t; 241 242 /* This array is indexed by zfs_userquota_prop_t */ 243 static const char *userquota_perms[] = { 244 ZFS_DELEG_PERM_USERUSED, 245 ZFS_DELEG_PERM_USERQUOTA, 246 ZFS_DELEG_PERM_GROUPUSED, 247 ZFS_DELEG_PERM_GROUPQUOTA, 248 }; 249 250 static int zfs_ioc_userspace_upgrade(zfs_cmd_t *zc); 251 static int zfs_check_settable(const char *name, nvpair_t *property, 252 cred_t *cr); 253 static int zfs_check_clearable(char *dataset, nvlist_t *props, 254 nvlist_t **errors); 255 static int zfs_fill_zplprops_root(uint64_t, nvlist_t *, nvlist_t *, 256 boolean_t *); 257 int zfs_set_prop_nvlist(const char *, zprop_source_t, nvlist_t *, nvlist_t *); 258 static int get_nvlist(uint64_t nvl, uint64_t size, int iflag, nvlist_t **nvp); 259 260 static int zfs_prop_activate_feature(spa_t *spa, spa_feature_t feature); 261 262 /* _NOTE(PRINTFLIKE(4)) - this is printf-like, but lint is too whiney */ 263 void 264 __dprintf(const char *file, const char *func, int line, const char *fmt, ...) 265 { 266 const char *newfile; 267 char buf[512]; 268 va_list adx; 269 270 /* 271 * Get rid of annoying "../common/" prefix to filename. 272 */ 273 newfile = strrchr(file, '/'); 274 if (newfile != NULL) { 275 newfile = newfile + 1; /* Get rid of leading / */ 276 } else { 277 newfile = file; 278 } 279 280 va_start(adx, fmt); 281 (void) vsnprintf(buf, sizeof (buf), fmt, adx); 282 va_end(adx); 283 284 /* 285 * To get this data, use the zfs-dprintf probe as so: 286 * dtrace -q -n 'zfs-dprintf \ 287 * /stringof(arg0) == "dbuf.c"/ \ 288 * {printf("%s: %s", stringof(arg1), stringof(arg3))}' 289 * arg0 = file name 290 * arg1 = function name 291 * arg2 = line number 292 * arg3 = message 293 */ 294 DTRACE_PROBE4(zfs__dprintf, 295 char *, newfile, char *, func, int, line, char *, buf); 296 } 297 298 static void 299 history_str_free(char *buf) 300 { 301 kmem_free(buf, HIS_MAX_RECORD_LEN); 302 } 303 304 static char * 305 history_str_get(zfs_cmd_t *zc) 306 { 307 char *buf; 308 309 if (zc->zc_history == NULL) 310 return (NULL); 311 312 buf = kmem_alloc(HIS_MAX_RECORD_LEN, KM_SLEEP); 313 if (copyinstr((void *)(uintptr_t)zc->zc_history, 314 buf, HIS_MAX_RECORD_LEN, NULL) != 0) { 315 history_str_free(buf); 316 return (NULL); 317 } 318 319 buf[HIS_MAX_RECORD_LEN -1] = '\0'; 320 321 return (buf); 322 } 323 324 /* 325 * Check to see if the named dataset is currently defined as bootable 326 */ 327 static boolean_t 328 zfs_is_bootfs(const char *name) 329 { 330 objset_t *os; 331 332 if (dmu_objset_hold(name, FTAG, &os) == 0) { 333 boolean_t ret; 334 ret = (dmu_objset_id(os) == spa_bootfs(dmu_objset_spa(os))); 335 dmu_objset_rele(os, FTAG); 336 return (ret); 337 } 338 return (B_FALSE); 339 } 340 341 /* 342 * Return non-zero if the spa version is less than requested version. 343 */ 344 static int 345 zfs_earlier_version(const char *name, int version) 346 { 347 spa_t *spa; 348 349 if (spa_open(name, &spa, FTAG) == 0) { 350 if (spa_version(spa) < version) { 351 spa_close(spa, FTAG); 352 return (1); 353 } 354 spa_close(spa, FTAG); 355 } 356 return (0); 357 } 358 359 /* 360 * Return TRUE if the ZPL version is less than requested version. 361 */ 362 static boolean_t 363 zpl_earlier_version(const char *name, int version) 364 { 365 objset_t *os; 366 boolean_t rc = B_TRUE; 367 368 if (dmu_objset_hold(name, FTAG, &os) == 0) { 369 uint64_t zplversion; 370 371 if (dmu_objset_type(os) != DMU_OST_ZFS) { 372 dmu_objset_rele(os, FTAG); 373 return (B_TRUE); 374 } 375 /* XXX reading from non-owned objset */ 376 if (zfs_get_zplprop(os, ZFS_PROP_VERSION, &zplversion) == 0) 377 rc = zplversion < version; 378 dmu_objset_rele(os, FTAG); 379 } 380 return (rc); 381 } 382 383 static void 384 zfs_log_history(zfs_cmd_t *zc) 385 { 386 spa_t *spa; 387 char *buf; 388 389 if ((buf = history_str_get(zc)) == NULL) 390 return; 391 392 if (spa_open(zc->zc_name, &spa, FTAG) == 0) { 393 if (spa_version(spa) >= SPA_VERSION_ZPOOL_HISTORY) 394 (void) spa_history_log(spa, buf); 395 spa_close(spa, FTAG); 396 } 397 history_str_free(buf); 398 } 399 400 /* 401 * Policy for top-level read operations (list pools). Requires no privileges, 402 * and can be used in the local zone, as there is no associated dataset. 403 */ 404 /* ARGSUSED */ 405 static int 406 zfs_secpolicy_none(zfs_cmd_t *zc, nvlist_t *innvl, cred_t *cr) 407 { 408 return (0); 409 } 410 411 /* 412 * Policy for dataset read operations (list children, get statistics). Requires 413 * no privileges, but must be visible in the local zone. 414 */ 415 /* ARGSUSED */ 416 static int 417 zfs_secpolicy_read(zfs_cmd_t *zc, nvlist_t *innvl, cred_t *cr) 418 { 419 if (INGLOBALZONE(curproc) || 420 zone_dataset_visible(zc->zc_name, NULL)) 421 return (0); 422 423 return (SET_ERROR(ENOENT)); 424 } 425 426 static int 427 zfs_dozonecheck_impl(const char *dataset, uint64_t zoned, cred_t *cr) 428 { 429 int writable = 1; 430 431 /* 432 * The dataset must be visible by this zone -- check this first 433 * so they don't see EPERM on something they shouldn't know about. 434 */ 435 if (!INGLOBALZONE(curproc) && 436 !zone_dataset_visible(dataset, &writable)) 437 return (SET_ERROR(ENOENT)); 438 439 if (INGLOBALZONE(curproc)) { 440 /* 441 * If the fs is zoned, only root can access it from the 442 * global zone. 443 */ 444 if (secpolicy_zfs(cr) && zoned) 445 return (SET_ERROR(EPERM)); 446 } else { 447 /* 448 * If we are in a local zone, the 'zoned' property must be set. 449 */ 450 if (!zoned) 451 return (SET_ERROR(EPERM)); 452 453 /* must be writable by this zone */ 454 if (!writable) 455 return (SET_ERROR(EPERM)); 456 } 457 return (0); 458 } 459 460 static int 461 zfs_dozonecheck(const char *dataset, cred_t *cr) 462 { 463 uint64_t zoned; 464 465 if (dsl_prop_get_integer(dataset, "zoned", &zoned, NULL)) 466 return (SET_ERROR(ENOENT)); 467 468 return (zfs_dozonecheck_impl(dataset, zoned, cr)); 469 } 470 471 static int 472 zfs_dozonecheck_ds(const char *dataset, dsl_dataset_t *ds, cred_t *cr) 473 { 474 uint64_t zoned; 475 476 if (dsl_prop_get_int_ds(ds, "zoned", &zoned)) 477 return (SET_ERROR(ENOENT)); 478 479 return (zfs_dozonecheck_impl(dataset, zoned, cr)); 480 } 481 482 static int 483 zfs_secpolicy_write_perms_ds(const char *name, dsl_dataset_t *ds, 484 const char *perm, cred_t *cr) 485 { 486 int error; 487 488 error = zfs_dozonecheck_ds(name, ds, cr); 489 if (error == 0) { 490 error = secpolicy_zfs(cr); 491 if (error != 0) 492 error = dsl_deleg_access_impl(ds, perm, cr); 493 } 494 return (error); 495 } 496 497 static int 498 zfs_secpolicy_write_perms(const char *name, const char *perm, cred_t *cr) 499 { 500 int error; 501 dsl_dataset_t *ds; 502 dsl_pool_t *dp; 503 504 /* 505 * First do a quick check for root in the global zone, which 506 * is allowed to do all write_perms. This ensures that zfs_ioc_* 507 * will get to handle nonexistent datasets. 508 */ 509 if (INGLOBALZONE(curproc) && secpolicy_zfs(cr) == 0) 510 return (0); 511 512 error = dsl_pool_hold(name, FTAG, &dp); 513 if (error != 0) 514 return (error); 515 516 error = dsl_dataset_hold(dp, name, FTAG, &ds); 517 if (error != 0) { 518 dsl_pool_rele(dp, FTAG); 519 return (error); 520 } 521 522 error = zfs_secpolicy_write_perms_ds(name, ds, perm, cr); 523 524 dsl_dataset_rele(ds, FTAG); 525 dsl_pool_rele(dp, FTAG); 526 return (error); 527 } 528 529 /* 530 * Policy for setting the security label property. 531 * 532 * Returns 0 for success, non-zero for access and other errors. 533 */ 534 static int 535 zfs_set_slabel_policy(const char *name, char *strval, cred_t *cr) 536 { 537 char ds_hexsl[MAXNAMELEN]; 538 bslabel_t ds_sl, new_sl; 539 boolean_t new_default = FALSE; 540 uint64_t zoned; 541 int needed_priv = -1; 542 int error; 543 544 /* First get the existing dataset label. */ 545 error = dsl_prop_get(name, zfs_prop_to_name(ZFS_PROP_MLSLABEL), 546 1, sizeof (ds_hexsl), &ds_hexsl, NULL); 547 if (error != 0) 548 return (SET_ERROR(EPERM)); 549 550 if (strcasecmp(strval, ZFS_MLSLABEL_DEFAULT) == 0) 551 new_default = TRUE; 552 553 /* The label must be translatable */ 554 if (!new_default && (hexstr_to_label(strval, &new_sl) != 0)) 555 return (SET_ERROR(EINVAL)); 556 557 /* 558 * In a non-global zone, disallow attempts to set a label that 559 * doesn't match that of the zone; otherwise no other checks 560 * are needed. 561 */ 562 if (!INGLOBALZONE(curproc)) { 563 if (new_default || !blequal(&new_sl, CR_SL(CRED()))) 564 return (SET_ERROR(EPERM)); 565 return (0); 566 } 567 568 /* 569 * For global-zone datasets (i.e., those whose zoned property is 570 * "off", verify that the specified new label is valid for the 571 * global zone. 572 */ 573 if (dsl_prop_get_integer(name, 574 zfs_prop_to_name(ZFS_PROP_ZONED), &zoned, NULL)) 575 return (SET_ERROR(EPERM)); 576 if (!zoned) { 577 if (zfs_check_global_label(name, strval) != 0) 578 return (SET_ERROR(EPERM)); 579 } 580 581 /* 582 * If the existing dataset label is nondefault, check if the 583 * dataset is mounted (label cannot be changed while mounted). 584 * Get the zfsvfs; if there isn't one, then the dataset isn't 585 * mounted (or isn't a dataset, doesn't exist, ...). 586 */ 587 if (strcasecmp(ds_hexsl, ZFS_MLSLABEL_DEFAULT) != 0) { 588 objset_t *os; 589 static char *setsl_tag = "setsl_tag"; 590 591 /* 592 * Try to own the dataset; abort if there is any error, 593 * (e.g., already mounted, in use, or other error). 594 */ 595 error = dmu_objset_own(name, DMU_OST_ZFS, B_TRUE, 596 setsl_tag, &os); 597 if (error != 0) 598 return (SET_ERROR(EPERM)); 599 600 dmu_objset_disown(os, setsl_tag); 601 602 if (new_default) { 603 needed_priv = PRIV_FILE_DOWNGRADE_SL; 604 goto out_check; 605 } 606 607 if (hexstr_to_label(strval, &new_sl) != 0) 608 return (SET_ERROR(EPERM)); 609 610 if (blstrictdom(&ds_sl, &new_sl)) 611 needed_priv = PRIV_FILE_DOWNGRADE_SL; 612 else if (blstrictdom(&new_sl, &ds_sl)) 613 needed_priv = PRIV_FILE_UPGRADE_SL; 614 } else { 615 /* dataset currently has a default label */ 616 if (!new_default) 617 needed_priv = PRIV_FILE_UPGRADE_SL; 618 } 619 620 out_check: 621 if (needed_priv != -1) 622 return (PRIV_POLICY(cr, needed_priv, B_FALSE, EPERM, NULL)); 623 return (0); 624 } 625 626 static int 627 zfs_secpolicy_setprop(const char *dsname, zfs_prop_t prop, nvpair_t *propval, 628 cred_t *cr) 629 { 630 char *strval; 631 632 /* 633 * Check permissions for special properties. 634 */ 635 switch (prop) { 636 case ZFS_PROP_ZONED: 637 /* 638 * Disallow setting of 'zoned' from within a local zone. 639 */ 640 if (!INGLOBALZONE(curproc)) 641 return (SET_ERROR(EPERM)); 642 break; 643 644 case ZFS_PROP_QUOTA: 645 case ZFS_PROP_FILESYSTEM_LIMIT: 646 case ZFS_PROP_SNAPSHOT_LIMIT: 647 if (!INGLOBALZONE(curproc)) { 648 uint64_t zoned; 649 char setpoint[ZFS_MAX_DATASET_NAME_LEN]; 650 /* 651 * Unprivileged users are allowed to modify the 652 * limit on things *under* (ie. contained by) 653 * the thing they own. 654 */ 655 if (dsl_prop_get_integer(dsname, "zoned", &zoned, 656 setpoint)) 657 return (SET_ERROR(EPERM)); 658 if (!zoned || strlen(dsname) <= strlen(setpoint)) 659 return (SET_ERROR(EPERM)); 660 } 661 break; 662 663 case ZFS_PROP_MLSLABEL: 664 if (!is_system_labeled()) 665 return (SET_ERROR(EPERM)); 666 667 if (nvpair_value_string(propval, &strval) == 0) { 668 int err; 669 670 err = zfs_set_slabel_policy(dsname, strval, CRED()); 671 if (err != 0) 672 return (err); 673 } 674 break; 675 } 676 677 return (zfs_secpolicy_write_perms(dsname, zfs_prop_to_name(prop), cr)); 678 } 679 680 /* ARGSUSED */ 681 static int 682 zfs_secpolicy_set_fsacl(zfs_cmd_t *zc, nvlist_t *innvl, cred_t *cr) 683 { 684 int error; 685 686 error = zfs_dozonecheck(zc->zc_name, cr); 687 if (error != 0) 688 return (error); 689 690 /* 691 * permission to set permissions will be evaluated later in 692 * dsl_deleg_can_allow() 693 */ 694 return (0); 695 } 696 697 /* ARGSUSED */ 698 static int 699 zfs_secpolicy_rollback(zfs_cmd_t *zc, nvlist_t *innvl, cred_t *cr) 700 { 701 return (zfs_secpolicy_write_perms(zc->zc_name, 702 ZFS_DELEG_PERM_ROLLBACK, cr)); 703 } 704 705 /* ARGSUSED */ 706 static int 707 zfs_secpolicy_send(zfs_cmd_t *zc, nvlist_t *innvl, cred_t *cr) 708 { 709 dsl_pool_t *dp; 710 dsl_dataset_t *ds; 711 char *cp; 712 int error; 713 714 /* 715 * Generate the current snapshot name from the given objsetid, then 716 * use that name for the secpolicy/zone checks. 717 */ 718 cp = strchr(zc->zc_name, '@'); 719 if (cp == NULL) 720 return (SET_ERROR(EINVAL)); 721 error = dsl_pool_hold(zc->zc_name, FTAG, &dp); 722 if (error != 0) 723 return (error); 724 725 error = dsl_dataset_hold_obj(dp, zc->zc_sendobj, FTAG, &ds); 726 if (error != 0) { 727 dsl_pool_rele(dp, FTAG); 728 return (error); 729 } 730 731 dsl_dataset_name(ds, zc->zc_name); 732 733 error = zfs_secpolicy_write_perms_ds(zc->zc_name, ds, 734 ZFS_DELEG_PERM_SEND, cr); 735 dsl_dataset_rele(ds, FTAG); 736 dsl_pool_rele(dp, FTAG); 737 738 return (error); 739 } 740 741 /* ARGSUSED */ 742 static int 743 zfs_secpolicy_send_new(zfs_cmd_t *zc, nvlist_t *innvl, cred_t *cr) 744 { 745 return (zfs_secpolicy_write_perms(zc->zc_name, 746 ZFS_DELEG_PERM_SEND, cr)); 747 } 748 749 /* ARGSUSED */ 750 static int 751 zfs_secpolicy_deleg_share(zfs_cmd_t *zc, nvlist_t *innvl, cred_t *cr) 752 { 753 vnode_t *vp; 754 int error; 755 756 if ((error = lookupname(zc->zc_value, UIO_SYSSPACE, 757 NO_FOLLOW, NULL, &vp)) != 0) 758 return (error); 759 760 /* Now make sure mntpnt and dataset are ZFS */ 761 762 if (vp->v_vfsp->vfs_fstype != zfsfstype || 763 (strcmp((char *)refstr_value(vp->v_vfsp->vfs_resource), 764 zc->zc_name) != 0)) { 765 VN_RELE(vp); 766 return (SET_ERROR(EPERM)); 767 } 768 769 VN_RELE(vp); 770 return (dsl_deleg_access(zc->zc_name, 771 ZFS_DELEG_PERM_SHARE, cr)); 772 } 773 774 int 775 zfs_secpolicy_share(zfs_cmd_t *zc, nvlist_t *innvl, cred_t *cr) 776 { 777 if (!INGLOBALZONE(curproc)) 778 return (SET_ERROR(EPERM)); 779 780 if (secpolicy_nfs(cr) == 0) { 781 return (0); 782 } else { 783 return (zfs_secpolicy_deleg_share(zc, innvl, cr)); 784 } 785 } 786 787 int 788 zfs_secpolicy_smb_acl(zfs_cmd_t *zc, nvlist_t *innvl, cred_t *cr) 789 { 790 if (!INGLOBALZONE(curproc)) 791 return (SET_ERROR(EPERM)); 792 793 if (secpolicy_smb(cr) == 0) { 794 return (0); 795 } else { 796 return (zfs_secpolicy_deleg_share(zc, innvl, cr)); 797 } 798 } 799 800 static int 801 zfs_get_parent(const char *datasetname, char *parent, int parentsize) 802 { 803 char *cp; 804 805 /* 806 * Remove the @bla or /bla from the end of the name to get the parent. 807 */ 808 (void) strncpy(parent, datasetname, parentsize); 809 cp = strrchr(parent, '@'); 810 if (cp != NULL) { 811 cp[0] = '\0'; 812 } else { 813 cp = strrchr(parent, '/'); 814 if (cp == NULL) 815 return (SET_ERROR(ENOENT)); 816 cp[0] = '\0'; 817 } 818 819 return (0); 820 } 821 822 int 823 zfs_secpolicy_destroy_perms(const char *name, cred_t *cr) 824 { 825 int error; 826 827 if ((error = zfs_secpolicy_write_perms(name, 828 ZFS_DELEG_PERM_MOUNT, cr)) != 0) 829 return (error); 830 831 return (zfs_secpolicy_write_perms(name, ZFS_DELEG_PERM_DESTROY, cr)); 832 } 833 834 /* ARGSUSED */ 835 static int 836 zfs_secpolicy_destroy(zfs_cmd_t *zc, nvlist_t *innvl, cred_t *cr) 837 { 838 return (zfs_secpolicy_destroy_perms(zc->zc_name, cr)); 839 } 840 841 /* 842 * Destroying snapshots with delegated permissions requires 843 * descendant mount and destroy permissions. 844 */ 845 /* ARGSUSED */ 846 static int 847 zfs_secpolicy_destroy_snaps(zfs_cmd_t *zc, nvlist_t *innvl, cred_t *cr) 848 { 849 nvlist_t *snaps; 850 nvpair_t *pair, *nextpair; 851 int error = 0; 852 853 if (nvlist_lookup_nvlist(innvl, "snaps", &snaps) != 0) 854 return (SET_ERROR(EINVAL)); 855 for (pair = nvlist_next_nvpair(snaps, NULL); pair != NULL; 856 pair = nextpair) { 857 nextpair = nvlist_next_nvpair(snaps, pair); 858 error = zfs_secpolicy_destroy_perms(nvpair_name(pair), cr); 859 if (error == ENOENT) { 860 /* 861 * Ignore any snapshots that don't exist (we consider 862 * them "already destroyed"). Remove the name from the 863 * nvl here in case the snapshot is created between 864 * now and when we try to destroy it (in which case 865 * we don't want to destroy it since we haven't 866 * checked for permission). 867 */ 868 fnvlist_remove_nvpair(snaps, pair); 869 error = 0; 870 } 871 if (error != 0) 872 break; 873 } 874 875 return (error); 876 } 877 878 int 879 zfs_secpolicy_rename_perms(const char *from, const char *to, cred_t *cr) 880 { 881 char parentname[ZFS_MAX_DATASET_NAME_LEN]; 882 int error; 883 884 if ((error = zfs_secpolicy_write_perms(from, 885 ZFS_DELEG_PERM_RENAME, cr)) != 0) 886 return (error); 887 888 if ((error = zfs_secpolicy_write_perms(from, 889 ZFS_DELEG_PERM_MOUNT, cr)) != 0) 890 return (error); 891 892 if ((error = zfs_get_parent(to, parentname, 893 sizeof (parentname))) != 0) 894 return (error); 895 896 if ((error = zfs_secpolicy_write_perms(parentname, 897 ZFS_DELEG_PERM_CREATE, cr)) != 0) 898 return (error); 899 900 if ((error = zfs_secpolicy_write_perms(parentname, 901 ZFS_DELEG_PERM_MOUNT, cr)) != 0) 902 return (error); 903 904 return (error); 905 } 906 907 /* ARGSUSED */ 908 static int 909 zfs_secpolicy_rename(zfs_cmd_t *zc, nvlist_t *innvl, cred_t *cr) 910 { 911 return (zfs_secpolicy_rename_perms(zc->zc_name, zc->zc_value, cr)); 912 } 913 914 /* ARGSUSED */ 915 static int 916 zfs_secpolicy_promote(zfs_cmd_t *zc, nvlist_t *innvl, cred_t *cr) 917 { 918 dsl_pool_t *dp; 919 dsl_dataset_t *clone; 920 int error; 921 922 error = zfs_secpolicy_write_perms(zc->zc_name, 923 ZFS_DELEG_PERM_PROMOTE, cr); 924 if (error != 0) 925 return (error); 926 927 error = dsl_pool_hold(zc->zc_name, FTAG, &dp); 928 if (error != 0) 929 return (error); 930 931 error = dsl_dataset_hold(dp, zc->zc_name, FTAG, &clone); 932 933 if (error == 0) { 934 char parentname[ZFS_MAX_DATASET_NAME_LEN]; 935 dsl_dataset_t *origin = NULL; 936 dsl_dir_t *dd; 937 dd = clone->ds_dir; 938 939 error = dsl_dataset_hold_obj(dd->dd_pool, 940 dsl_dir_phys(dd)->dd_origin_obj, FTAG, &origin); 941 if (error != 0) { 942 dsl_dataset_rele(clone, FTAG); 943 dsl_pool_rele(dp, FTAG); 944 return (error); 945 } 946 947 error = zfs_secpolicy_write_perms_ds(zc->zc_name, clone, 948 ZFS_DELEG_PERM_MOUNT, cr); 949 950 dsl_dataset_name(origin, parentname); 951 if (error == 0) { 952 error = zfs_secpolicy_write_perms_ds(parentname, origin, 953 ZFS_DELEG_PERM_PROMOTE, cr); 954 } 955 dsl_dataset_rele(clone, FTAG); 956 dsl_dataset_rele(origin, FTAG); 957 } 958 dsl_pool_rele(dp, FTAG); 959 return (error); 960 } 961 962 /* ARGSUSED */ 963 static int 964 zfs_secpolicy_recv(zfs_cmd_t *zc, nvlist_t *innvl, cred_t *cr) 965 { 966 int error; 967 968 if ((error = zfs_secpolicy_write_perms(zc->zc_name, 969 ZFS_DELEG_PERM_RECEIVE, cr)) != 0) 970 return (error); 971 972 if ((error = zfs_secpolicy_write_perms(zc->zc_name, 973 ZFS_DELEG_PERM_MOUNT, cr)) != 0) 974 return (error); 975 976 return (zfs_secpolicy_write_perms(zc->zc_name, 977 ZFS_DELEG_PERM_CREATE, cr)); 978 } 979 980 int 981 zfs_secpolicy_snapshot_perms(const char *name, cred_t *cr) 982 { 983 return (zfs_secpolicy_write_perms(name, 984 ZFS_DELEG_PERM_SNAPSHOT, cr)); 985 } 986 987 /* 988 * Check for permission to create each snapshot in the nvlist. 989 */ 990 /* ARGSUSED */ 991 static int 992 zfs_secpolicy_snapshot(zfs_cmd_t *zc, nvlist_t *innvl, cred_t *cr) 993 { 994 nvlist_t *snaps; 995 int error = 0; 996 nvpair_t *pair; 997 998 if (nvlist_lookup_nvlist(innvl, "snaps", &snaps) != 0) 999 return (SET_ERROR(EINVAL)); 1000 for (pair = nvlist_next_nvpair(snaps, NULL); pair != NULL; 1001 pair = nvlist_next_nvpair(snaps, pair)) { 1002 char *name = nvpair_name(pair); 1003 char *atp = strchr(name, '@'); 1004 1005 if (atp == NULL) { 1006 error = SET_ERROR(EINVAL); 1007 break; 1008 } 1009 *atp = '\0'; 1010 error = zfs_secpolicy_snapshot_perms(name, cr); 1011 *atp = '@'; 1012 if (error != 0) 1013 break; 1014 } 1015 return (error); 1016 } 1017 1018 /* 1019 * Check for permission to create each snapshot in the nvlist. 1020 */ 1021 /* ARGSUSED */ 1022 static int 1023 zfs_secpolicy_bookmark(zfs_cmd_t *zc, nvlist_t *innvl, cred_t *cr) 1024 { 1025 int error = 0; 1026 1027 for (nvpair_t *pair = nvlist_next_nvpair(innvl, NULL); 1028 pair != NULL; pair = nvlist_next_nvpair(innvl, pair)) { 1029 char *name = nvpair_name(pair); 1030 char *hashp = strchr(name, '#'); 1031 1032 if (hashp == NULL) { 1033 error = SET_ERROR(EINVAL); 1034 break; 1035 } 1036 *hashp = '\0'; 1037 error = zfs_secpolicy_write_perms(name, 1038 ZFS_DELEG_PERM_BOOKMARK, cr); 1039 *hashp = '#'; 1040 if (error != 0) 1041 break; 1042 } 1043 return (error); 1044 } 1045 1046 /* ARGSUSED */ 1047 static int 1048 zfs_secpolicy_remap(zfs_cmd_t *zc, nvlist_t *innvl, cred_t *cr) 1049 { 1050 return (zfs_secpolicy_write_perms(zc->zc_name, 1051 ZFS_DELEG_PERM_REMAP, cr)); 1052 } 1053 1054 /* ARGSUSED */ 1055 static int 1056 zfs_secpolicy_destroy_bookmarks(zfs_cmd_t *zc, nvlist_t *innvl, cred_t *cr) 1057 { 1058 nvpair_t *pair, *nextpair; 1059 int error = 0; 1060 1061 for (pair = nvlist_next_nvpair(innvl, NULL); pair != NULL; 1062 pair = nextpair) { 1063 char *name = nvpair_name(pair); 1064 char *hashp = strchr(name, '#'); 1065 nextpair = nvlist_next_nvpair(innvl, pair); 1066 1067 if (hashp == NULL) { 1068 error = SET_ERROR(EINVAL); 1069 break; 1070 } 1071 1072 *hashp = '\0'; 1073 error = zfs_secpolicy_write_perms(name, 1074 ZFS_DELEG_PERM_DESTROY, cr); 1075 *hashp = '#'; 1076 if (error == ENOENT) { 1077 /* 1078 * Ignore any filesystems that don't exist (we consider 1079 * their bookmarks "already destroyed"). Remove 1080 * the name from the nvl here in case the filesystem 1081 * is created between now and when we try to destroy 1082 * the bookmark (in which case we don't want to 1083 * destroy it since we haven't checked for permission). 1084 */ 1085 fnvlist_remove_nvpair(innvl, pair); 1086 error = 0; 1087 } 1088 if (error != 0) 1089 break; 1090 } 1091 1092 return (error); 1093 } 1094 1095 /* ARGSUSED */ 1096 static int 1097 zfs_secpolicy_log_history(zfs_cmd_t *zc, nvlist_t *innvl, cred_t *cr) 1098 { 1099 /* 1100 * Even root must have a proper TSD so that we know what pool 1101 * to log to. 1102 */ 1103 if (tsd_get(zfs_allow_log_key) == NULL) 1104 return (SET_ERROR(EPERM)); 1105 return (0); 1106 } 1107 1108 static int 1109 zfs_secpolicy_create_clone(zfs_cmd_t *zc, nvlist_t *innvl, cred_t *cr) 1110 { 1111 char parentname[ZFS_MAX_DATASET_NAME_LEN]; 1112 int error; 1113 char *origin; 1114 1115 if ((error = zfs_get_parent(zc->zc_name, parentname, 1116 sizeof (parentname))) != 0) 1117 return (error); 1118 1119 if (nvlist_lookup_string(innvl, "origin", &origin) == 0 && 1120 (error = zfs_secpolicy_write_perms(origin, 1121 ZFS_DELEG_PERM_CLONE, cr)) != 0) 1122 return (error); 1123 1124 if ((error = zfs_secpolicy_write_perms(parentname, 1125 ZFS_DELEG_PERM_CREATE, cr)) != 0) 1126 return (error); 1127 1128 return (zfs_secpolicy_write_perms(parentname, 1129 ZFS_DELEG_PERM_MOUNT, cr)); 1130 } 1131 1132 /* 1133 * Policy for pool operations - create/destroy pools, add vdevs, etc. Requires 1134 * SYS_CONFIG privilege, which is not available in a local zone. 1135 */ 1136 /* ARGSUSED */ 1137 static int 1138 zfs_secpolicy_config(zfs_cmd_t *zc, nvlist_t *innvl, cred_t *cr) 1139 { 1140 if (secpolicy_sys_config(cr, B_FALSE) != 0) 1141 return (SET_ERROR(EPERM)); 1142 1143 return (0); 1144 } 1145 1146 /* 1147 * Policy for object to name lookups. 1148 */ 1149 /* ARGSUSED */ 1150 static int 1151 zfs_secpolicy_diff(zfs_cmd_t *zc, nvlist_t *innvl, cred_t *cr) 1152 { 1153 int error; 1154 1155 if ((error = secpolicy_sys_config(cr, B_FALSE)) == 0) 1156 return (0); 1157 1158 error = zfs_secpolicy_write_perms(zc->zc_name, ZFS_DELEG_PERM_DIFF, cr); 1159 return (error); 1160 } 1161 1162 /* 1163 * Policy for fault injection. Requires all privileges. 1164 */ 1165 /* ARGSUSED */ 1166 static int 1167 zfs_secpolicy_inject(zfs_cmd_t *zc, nvlist_t *innvl, cred_t *cr) 1168 { 1169 return (secpolicy_zinject(cr)); 1170 } 1171 1172 /* ARGSUSED */ 1173 static int 1174 zfs_secpolicy_inherit_prop(zfs_cmd_t *zc, nvlist_t *innvl, cred_t *cr) 1175 { 1176 zfs_prop_t prop = zfs_name_to_prop(zc->zc_value); 1177 1178 if (prop == ZPROP_INVAL) { 1179 if (!zfs_prop_user(zc->zc_value)) 1180 return (SET_ERROR(EINVAL)); 1181 return (zfs_secpolicy_write_perms(zc->zc_name, 1182 ZFS_DELEG_PERM_USERPROP, cr)); 1183 } else { 1184 return (zfs_secpolicy_setprop(zc->zc_name, prop, 1185 NULL, cr)); 1186 } 1187 } 1188 1189 static int 1190 zfs_secpolicy_userspace_one(zfs_cmd_t *zc, nvlist_t *innvl, cred_t *cr) 1191 { 1192 int err = zfs_secpolicy_read(zc, innvl, cr); 1193 if (err) 1194 return (err); 1195 1196 if (zc->zc_objset_type >= ZFS_NUM_USERQUOTA_PROPS) 1197 return (SET_ERROR(EINVAL)); 1198 1199 if (zc->zc_value[0] == 0) { 1200 /* 1201 * They are asking about a posix uid/gid. If it's 1202 * themself, allow it. 1203 */ 1204 if (zc->zc_objset_type == ZFS_PROP_USERUSED || 1205 zc->zc_objset_type == ZFS_PROP_USERQUOTA) { 1206 if (zc->zc_guid == crgetuid(cr)) 1207 return (0); 1208 } else { 1209 if (groupmember(zc->zc_guid, cr)) 1210 return (0); 1211 } 1212 } 1213 1214 return (zfs_secpolicy_write_perms(zc->zc_name, 1215 userquota_perms[zc->zc_objset_type], cr)); 1216 } 1217 1218 static int 1219 zfs_secpolicy_userspace_many(zfs_cmd_t *zc, nvlist_t *innvl, cred_t *cr) 1220 { 1221 int err = zfs_secpolicy_read(zc, innvl, cr); 1222 if (err) 1223 return (err); 1224 1225 if (zc->zc_objset_type >= ZFS_NUM_USERQUOTA_PROPS) 1226 return (SET_ERROR(EINVAL)); 1227 1228 return (zfs_secpolicy_write_perms(zc->zc_name, 1229 userquota_perms[zc->zc_objset_type], cr)); 1230 } 1231 1232 /* ARGSUSED */ 1233 static int 1234 zfs_secpolicy_userspace_upgrade(zfs_cmd_t *zc, nvlist_t *innvl, cred_t *cr) 1235 { 1236 return (zfs_secpolicy_setprop(zc->zc_name, ZFS_PROP_VERSION, 1237 NULL, cr)); 1238 } 1239 1240 /* ARGSUSED */ 1241 static int 1242 zfs_secpolicy_hold(zfs_cmd_t *zc, nvlist_t *innvl, cred_t *cr) 1243 { 1244 nvpair_t *pair; 1245 nvlist_t *holds; 1246 int error; 1247 1248 error = nvlist_lookup_nvlist(innvl, "holds", &holds); 1249 if (error != 0) 1250 return (SET_ERROR(EINVAL)); 1251 1252 for (pair = nvlist_next_nvpair(holds, NULL); pair != NULL; 1253 pair = nvlist_next_nvpair(holds, pair)) { 1254 char fsname[ZFS_MAX_DATASET_NAME_LEN]; 1255 error = dmu_fsname(nvpair_name(pair), fsname); 1256 if (error != 0) 1257 return (error); 1258 error = zfs_secpolicy_write_perms(fsname, 1259 ZFS_DELEG_PERM_HOLD, cr); 1260 if (error != 0) 1261 return (error); 1262 } 1263 return (0); 1264 } 1265 1266 /* ARGSUSED */ 1267 static int 1268 zfs_secpolicy_release(zfs_cmd_t *zc, nvlist_t *innvl, cred_t *cr) 1269 { 1270 nvpair_t *pair; 1271 int error; 1272 1273 for (pair = nvlist_next_nvpair(innvl, NULL); pair != NULL; 1274 pair = nvlist_next_nvpair(innvl, pair)) { 1275 char fsname[ZFS_MAX_DATASET_NAME_LEN]; 1276 error = dmu_fsname(nvpair_name(pair), fsname); 1277 if (error != 0) 1278 return (error); 1279 error = zfs_secpolicy_write_perms(fsname, 1280 ZFS_DELEG_PERM_RELEASE, cr); 1281 if (error != 0) 1282 return (error); 1283 } 1284 return (0); 1285 } 1286 1287 /* 1288 * Policy for allowing temporary snapshots to be taken or released 1289 */ 1290 static int 1291 zfs_secpolicy_tmp_snapshot(zfs_cmd_t *zc, nvlist_t *innvl, cred_t *cr) 1292 { 1293 /* 1294 * A temporary snapshot is the same as a snapshot, 1295 * hold, destroy and release all rolled into one. 1296 * Delegated diff alone is sufficient that we allow this. 1297 */ 1298 int error; 1299 1300 if ((error = zfs_secpolicy_write_perms(zc->zc_name, 1301 ZFS_DELEG_PERM_DIFF, cr)) == 0) 1302 return (0); 1303 1304 error = zfs_secpolicy_snapshot_perms(zc->zc_name, cr); 1305 if (error == 0) 1306 error = zfs_secpolicy_hold(zc, innvl, cr); 1307 if (error == 0) 1308 error = zfs_secpolicy_release(zc, innvl, cr); 1309 if (error == 0) 1310 error = zfs_secpolicy_destroy(zc, innvl, cr); 1311 return (error); 1312 } 1313 1314 /* 1315 * Returns the nvlist as specified by the user in the zfs_cmd_t. 1316 */ 1317 static int 1318 get_nvlist(uint64_t nvl, uint64_t size, int iflag, nvlist_t **nvp) 1319 { 1320 char *packed; 1321 int error; 1322 nvlist_t *list = NULL; 1323 1324 /* 1325 * Read in and unpack the user-supplied nvlist. 1326 */ 1327 if (size == 0) 1328 return (SET_ERROR(EINVAL)); 1329 1330 packed = kmem_alloc(size, KM_SLEEP); 1331 1332 if ((error = ddi_copyin((void *)(uintptr_t)nvl, packed, size, 1333 iflag)) != 0) { 1334 kmem_free(packed, size); 1335 return (SET_ERROR(EFAULT)); 1336 } 1337 1338 if ((error = nvlist_unpack(packed, size, &list, 0)) != 0) { 1339 kmem_free(packed, size); 1340 return (error); 1341 } 1342 1343 kmem_free(packed, size); 1344 1345 *nvp = list; 1346 return (0); 1347 } 1348 1349 /* 1350 * Reduce the size of this nvlist until it can be serialized in 'max' bytes. 1351 * Entries will be removed from the end of the nvlist, and one int32 entry 1352 * named "N_MORE_ERRORS" will be added indicating how many entries were 1353 * removed. 1354 */ 1355 static int 1356 nvlist_smush(nvlist_t *errors, size_t max) 1357 { 1358 size_t size; 1359 1360 size = fnvlist_size(errors); 1361 1362 if (size > max) { 1363 nvpair_t *more_errors; 1364 int n = 0; 1365 1366 if (max < 1024) 1367 return (SET_ERROR(ENOMEM)); 1368 1369 fnvlist_add_int32(errors, ZPROP_N_MORE_ERRORS, 0); 1370 more_errors = nvlist_prev_nvpair(errors, NULL); 1371 1372 do { 1373 nvpair_t *pair = nvlist_prev_nvpair(errors, 1374 more_errors); 1375 fnvlist_remove_nvpair(errors, pair); 1376 n++; 1377 size = fnvlist_size(errors); 1378 } while (size > max); 1379 1380 fnvlist_remove_nvpair(errors, more_errors); 1381 fnvlist_add_int32(errors, ZPROP_N_MORE_ERRORS, n); 1382 ASSERT3U(fnvlist_size(errors), <=, max); 1383 } 1384 1385 return (0); 1386 } 1387 1388 static int 1389 put_nvlist(zfs_cmd_t *zc, nvlist_t *nvl) 1390 { 1391 char *packed = NULL; 1392 int error = 0; 1393 size_t size; 1394 1395 size = fnvlist_size(nvl); 1396 1397 if (size > zc->zc_nvlist_dst_size) { 1398 error = SET_ERROR(ENOMEM); 1399 } else { 1400 packed = fnvlist_pack(nvl, &size); 1401 if (ddi_copyout(packed, (void *)(uintptr_t)zc->zc_nvlist_dst, 1402 size, zc->zc_iflags) != 0) 1403 error = SET_ERROR(EFAULT); 1404 fnvlist_pack_free(packed, size); 1405 } 1406 1407 zc->zc_nvlist_dst_size = size; 1408 zc->zc_nvlist_dst_filled = B_TRUE; 1409 return (error); 1410 } 1411 1412 int 1413 getzfsvfs_impl(objset_t *os, zfsvfs_t **zfvp) 1414 { 1415 int error = 0; 1416 if (dmu_objset_type(os) != DMU_OST_ZFS) { 1417 return (SET_ERROR(EINVAL)); 1418 } 1419 1420 mutex_enter(&os->os_user_ptr_lock); 1421 *zfvp = dmu_objset_get_user(os); 1422 if (*zfvp) { 1423 VFS_HOLD((*zfvp)->z_vfs); 1424 } else { 1425 error = SET_ERROR(ESRCH); 1426 } 1427 mutex_exit(&os->os_user_ptr_lock); 1428 return (error); 1429 } 1430 1431 int 1432 getzfsvfs(const char *dsname, zfsvfs_t **zfvp) 1433 { 1434 objset_t *os; 1435 int error; 1436 1437 error = dmu_objset_hold(dsname, FTAG, &os); 1438 if (error != 0) 1439 return (error); 1440 1441 error = getzfsvfs_impl(os, zfvp); 1442 dmu_objset_rele(os, FTAG); 1443 return (error); 1444 } 1445 1446 /* 1447 * Find a zfsvfs_t for a mounted filesystem, or create our own, in which 1448 * case its z_vfs will be NULL, and it will be opened as the owner. 1449 * If 'writer' is set, the z_teardown_lock will be held for RW_WRITER, 1450 * which prevents all vnode ops from running. 1451 */ 1452 static int 1453 zfsvfs_hold(const char *name, void *tag, zfsvfs_t **zfvp, boolean_t writer) 1454 { 1455 int error = 0; 1456 1457 if (getzfsvfs(name, zfvp) != 0) 1458 error = zfsvfs_create(name, zfvp); 1459 if (error == 0) { 1460 rrm_enter(&(*zfvp)->z_teardown_lock, (writer) ? RW_WRITER : 1461 RW_READER, tag); 1462 if ((*zfvp)->z_unmounted) { 1463 /* 1464 * XXX we could probably try again, since the unmounting 1465 * thread should be just about to disassociate the 1466 * objset from the zfsvfs. 1467 */ 1468 rrm_exit(&(*zfvp)->z_teardown_lock, tag); 1469 return (SET_ERROR(EBUSY)); 1470 } 1471 } 1472 return (error); 1473 } 1474 1475 static void 1476 zfsvfs_rele(zfsvfs_t *zfsvfs, void *tag) 1477 { 1478 rrm_exit(&zfsvfs->z_teardown_lock, tag); 1479 1480 if (zfsvfs->z_vfs) { 1481 VFS_RELE(zfsvfs->z_vfs); 1482 } else { 1483 dmu_objset_disown(zfsvfs->z_os, zfsvfs); 1484 zfsvfs_free(zfsvfs); 1485 } 1486 } 1487 1488 static int 1489 zfs_ioc_pool_create(zfs_cmd_t *zc) 1490 { 1491 int error; 1492 nvlist_t *config, *props = NULL; 1493 nvlist_t *rootprops = NULL; 1494 nvlist_t *zplprops = NULL; 1495 1496 if (error = get_nvlist(zc->zc_nvlist_conf, zc->zc_nvlist_conf_size, 1497 zc->zc_iflags, &config)) 1498 return (error); 1499 1500 if (zc->zc_nvlist_src_size != 0 && (error = 1501 get_nvlist(zc->zc_nvlist_src, zc->zc_nvlist_src_size, 1502 zc->zc_iflags, &props))) { 1503 nvlist_free(config); 1504 return (error); 1505 } 1506 1507 if (props) { 1508 nvlist_t *nvl = NULL; 1509 uint64_t version = SPA_VERSION; 1510 1511 (void) nvlist_lookup_uint64(props, 1512 zpool_prop_to_name(ZPOOL_PROP_VERSION), &version); 1513 if (!SPA_VERSION_IS_SUPPORTED(version)) { 1514 error = SET_ERROR(EINVAL); 1515 goto pool_props_bad; 1516 } 1517 (void) nvlist_lookup_nvlist(props, ZPOOL_ROOTFS_PROPS, &nvl); 1518 if (nvl) { 1519 error = nvlist_dup(nvl, &rootprops, KM_SLEEP); 1520 if (error != 0) { 1521 nvlist_free(config); 1522 nvlist_free(props); 1523 return (error); 1524 } 1525 (void) nvlist_remove_all(props, ZPOOL_ROOTFS_PROPS); 1526 } 1527 VERIFY(nvlist_alloc(&zplprops, NV_UNIQUE_NAME, KM_SLEEP) == 0); 1528 error = zfs_fill_zplprops_root(version, rootprops, 1529 zplprops, NULL); 1530 if (error != 0) 1531 goto pool_props_bad; 1532 } 1533 1534 error = spa_create(zc->zc_name, config, props, zplprops); 1535 1536 /* 1537 * Set the remaining root properties 1538 */ 1539 if (!error && (error = zfs_set_prop_nvlist(zc->zc_name, 1540 ZPROP_SRC_LOCAL, rootprops, NULL)) != 0) 1541 (void) spa_destroy(zc->zc_name); 1542 1543 pool_props_bad: 1544 nvlist_free(rootprops); 1545 nvlist_free(zplprops); 1546 nvlist_free(config); 1547 nvlist_free(props); 1548 1549 return (error); 1550 } 1551 1552 static int 1553 zfs_ioc_pool_destroy(zfs_cmd_t *zc) 1554 { 1555 int error; 1556 zfs_log_history(zc); 1557 error = spa_destroy(zc->zc_name); 1558 if (error == 0) 1559 zvol_remove_minors(zc->zc_name); 1560 return (error); 1561 } 1562 1563 static int 1564 zfs_ioc_pool_import(zfs_cmd_t *zc) 1565 { 1566 nvlist_t *config, *props = NULL; 1567 uint64_t guid; 1568 int error; 1569 1570 if ((error = get_nvlist(zc->zc_nvlist_conf, zc->zc_nvlist_conf_size, 1571 zc->zc_iflags, &config)) != 0) 1572 return (error); 1573 1574 if (zc->zc_nvlist_src_size != 0 && (error = 1575 get_nvlist(zc->zc_nvlist_src, zc->zc_nvlist_src_size, 1576 zc->zc_iflags, &props))) { 1577 nvlist_free(config); 1578 return (error); 1579 } 1580 1581 if (nvlist_lookup_uint64(config, ZPOOL_CONFIG_POOL_GUID, &guid) != 0 || 1582 guid != zc->zc_guid) 1583 error = SET_ERROR(EINVAL); 1584 else 1585 error = spa_import(zc->zc_name, config, props, zc->zc_cookie); 1586 1587 if (zc->zc_nvlist_dst != 0) { 1588 int err; 1589 1590 if ((err = put_nvlist(zc, config)) != 0) 1591 error = err; 1592 } 1593 1594 nvlist_free(config); 1595 1596 nvlist_free(props); 1597 1598 return (error); 1599 } 1600 1601 static int 1602 zfs_ioc_pool_export(zfs_cmd_t *zc) 1603 { 1604 int error; 1605 boolean_t force = (boolean_t)zc->zc_cookie; 1606 boolean_t hardforce = (boolean_t)zc->zc_guid; 1607 1608 zfs_log_history(zc); 1609 error = spa_export(zc->zc_name, NULL, force, hardforce); 1610 if (error == 0) 1611 zvol_remove_minors(zc->zc_name); 1612 return (error); 1613 } 1614 1615 static int 1616 zfs_ioc_pool_configs(zfs_cmd_t *zc) 1617 { 1618 nvlist_t *configs; 1619 int error; 1620 1621 if ((configs = spa_all_configs(&zc->zc_cookie)) == NULL) 1622 return (SET_ERROR(EEXIST)); 1623 1624 error = put_nvlist(zc, configs); 1625 1626 nvlist_free(configs); 1627 1628 return (error); 1629 } 1630 1631 /* 1632 * inputs: 1633 * zc_name name of the pool 1634 * 1635 * outputs: 1636 * zc_cookie real errno 1637 * zc_nvlist_dst config nvlist 1638 * zc_nvlist_dst_size size of config nvlist 1639 */ 1640 static int 1641 zfs_ioc_pool_stats(zfs_cmd_t *zc) 1642 { 1643 nvlist_t *config; 1644 int error; 1645 int ret = 0; 1646 1647 error = spa_get_stats(zc->zc_name, &config, zc->zc_value, 1648 sizeof (zc->zc_value)); 1649 1650 if (config != NULL) { 1651 ret = put_nvlist(zc, config); 1652 nvlist_free(config); 1653 1654 /* 1655 * The config may be present even if 'error' is non-zero. 1656 * In this case we return success, and preserve the real errno 1657 * in 'zc_cookie'. 1658 */ 1659 zc->zc_cookie = error; 1660 } else { 1661 ret = error; 1662 } 1663 1664 return (ret); 1665 } 1666 1667 /* 1668 * Try to import the given pool, returning pool stats as appropriate so that 1669 * user land knows which devices are available and overall pool health. 1670 */ 1671 static int 1672 zfs_ioc_pool_tryimport(zfs_cmd_t *zc) 1673 { 1674 nvlist_t *tryconfig, *config; 1675 int error; 1676 1677 if ((error = get_nvlist(zc->zc_nvlist_conf, zc->zc_nvlist_conf_size, 1678 zc->zc_iflags, &tryconfig)) != 0) 1679 return (error); 1680 1681 config = spa_tryimport(tryconfig); 1682 1683 nvlist_free(tryconfig); 1684 1685 if (config == NULL) 1686 return (SET_ERROR(EINVAL)); 1687 1688 error = put_nvlist(zc, config); 1689 nvlist_free(config); 1690 1691 return (error); 1692 } 1693 1694 /* 1695 * inputs: 1696 * zc_name name of the pool 1697 * zc_cookie scan func (pool_scan_func_t) 1698 * zc_flags scrub pause/resume flag (pool_scrub_cmd_t) 1699 */ 1700 static int 1701 zfs_ioc_pool_scan(zfs_cmd_t *zc) 1702 { 1703 spa_t *spa; 1704 int error; 1705 1706 if ((error = spa_open(zc->zc_name, &spa, FTAG)) != 0) 1707 return (error); 1708 1709 if (zc->zc_flags >= POOL_SCRUB_FLAGS_END) 1710 return (SET_ERROR(EINVAL)); 1711 1712 if (zc->zc_flags == POOL_SCRUB_PAUSE) 1713 error = spa_scrub_pause_resume(spa, POOL_SCRUB_PAUSE); 1714 else if (zc->zc_cookie == POOL_SCAN_NONE) 1715 error = spa_scan_stop(spa); 1716 else 1717 error = spa_scan(spa, zc->zc_cookie); 1718 1719 spa_close(spa, FTAG); 1720 1721 return (error); 1722 } 1723 1724 static int 1725 zfs_ioc_pool_freeze(zfs_cmd_t *zc) 1726 { 1727 spa_t *spa; 1728 int error; 1729 1730 error = spa_open(zc->zc_name, &spa, FTAG); 1731 if (error == 0) { 1732 spa_freeze(spa); 1733 spa_close(spa, FTAG); 1734 } 1735 return (error); 1736 } 1737 1738 static int 1739 zfs_ioc_pool_upgrade(zfs_cmd_t *zc) 1740 { 1741 spa_t *spa; 1742 int error; 1743 1744 if ((error = spa_open(zc->zc_name, &spa, FTAG)) != 0) 1745 return (error); 1746 1747 if (zc->zc_cookie < spa_version(spa) || 1748 !SPA_VERSION_IS_SUPPORTED(zc->zc_cookie)) { 1749 spa_close(spa, FTAG); 1750 return (SET_ERROR(EINVAL)); 1751 } 1752 1753 spa_upgrade(spa, zc->zc_cookie); 1754 spa_close(spa, FTAG); 1755 1756 return (error); 1757 } 1758 1759 static int 1760 zfs_ioc_pool_get_history(zfs_cmd_t *zc) 1761 { 1762 spa_t *spa; 1763 char *hist_buf; 1764 uint64_t size; 1765 int error; 1766 1767 if ((size = zc->zc_history_len) == 0) 1768 return (SET_ERROR(EINVAL)); 1769 1770 if ((error = spa_open(zc->zc_name, &spa, FTAG)) != 0) 1771 return (error); 1772 1773 if (spa_version(spa) < SPA_VERSION_ZPOOL_HISTORY) { 1774 spa_close(spa, FTAG); 1775 return (SET_ERROR(ENOTSUP)); 1776 } 1777 1778 hist_buf = kmem_alloc(size, KM_SLEEP); 1779 if ((error = spa_history_get(spa, &zc->zc_history_offset, 1780 &zc->zc_history_len, hist_buf)) == 0) { 1781 error = ddi_copyout(hist_buf, 1782 (void *)(uintptr_t)zc->zc_history, 1783 zc->zc_history_len, zc->zc_iflags); 1784 } 1785 1786 spa_close(spa, FTAG); 1787 kmem_free(hist_buf, size); 1788 return (error); 1789 } 1790 1791 static int 1792 zfs_ioc_pool_reguid(zfs_cmd_t *zc) 1793 { 1794 spa_t *spa; 1795 int error; 1796 1797 error = spa_open(zc->zc_name, &spa, FTAG); 1798 if (error == 0) { 1799 error = spa_change_guid(spa); 1800 spa_close(spa, FTAG); 1801 } 1802 return (error); 1803 } 1804 1805 static int 1806 zfs_ioc_dsobj_to_dsname(zfs_cmd_t *zc) 1807 { 1808 return (dsl_dsobj_to_dsname(zc->zc_name, zc->zc_obj, zc->zc_value)); 1809 } 1810 1811 /* 1812 * inputs: 1813 * zc_name name of filesystem 1814 * zc_obj object to find 1815 * 1816 * outputs: 1817 * zc_value name of object 1818 */ 1819 static int 1820 zfs_ioc_obj_to_path(zfs_cmd_t *zc) 1821 { 1822 objset_t *os; 1823 int error; 1824 1825 /* XXX reading from objset not owned */ 1826 if ((error = dmu_objset_hold(zc->zc_name, FTAG, &os)) != 0) 1827 return (error); 1828 if (dmu_objset_type(os) != DMU_OST_ZFS) { 1829 dmu_objset_rele(os, FTAG); 1830 return (SET_ERROR(EINVAL)); 1831 } 1832 error = zfs_obj_to_path(os, zc->zc_obj, zc->zc_value, 1833 sizeof (zc->zc_value)); 1834 dmu_objset_rele(os, FTAG); 1835 1836 return (error); 1837 } 1838 1839 /* 1840 * inputs: 1841 * zc_name name of filesystem 1842 * zc_obj object to find 1843 * 1844 * outputs: 1845 * zc_stat stats on object 1846 * zc_value path to object 1847 */ 1848 static int 1849 zfs_ioc_obj_to_stats(zfs_cmd_t *zc) 1850 { 1851 objset_t *os; 1852 int error; 1853 1854 /* XXX reading from objset not owned */ 1855 if ((error = dmu_objset_hold(zc->zc_name, FTAG, &os)) != 0) 1856 return (error); 1857 if (dmu_objset_type(os) != DMU_OST_ZFS) { 1858 dmu_objset_rele(os, FTAG); 1859 return (SET_ERROR(EINVAL)); 1860 } 1861 error = zfs_obj_to_stats(os, zc->zc_obj, &zc->zc_stat, zc->zc_value, 1862 sizeof (zc->zc_value)); 1863 dmu_objset_rele(os, FTAG); 1864 1865 return (error); 1866 } 1867 1868 static int 1869 zfs_ioc_vdev_add(zfs_cmd_t *zc) 1870 { 1871 spa_t *spa; 1872 int error; 1873 nvlist_t *config, **l2cache, **spares; 1874 uint_t nl2cache = 0, nspares = 0; 1875 1876 error = spa_open(zc->zc_name, &spa, FTAG); 1877 if (error != 0) 1878 return (error); 1879 1880 error = get_nvlist(zc->zc_nvlist_conf, zc->zc_nvlist_conf_size, 1881 zc->zc_iflags, &config); 1882 (void) nvlist_lookup_nvlist_array(config, ZPOOL_CONFIG_L2CACHE, 1883 &l2cache, &nl2cache); 1884 1885 (void) nvlist_lookup_nvlist_array(config, ZPOOL_CONFIG_SPARES, 1886 &spares, &nspares); 1887 1888 /* 1889 * A root pool with concatenated devices is not supported. 1890 * Thus, can not add a device to a root pool. 1891 * 1892 * Intent log device can not be added to a rootpool because 1893 * during mountroot, zil is replayed, a seperated log device 1894 * can not be accessed during the mountroot time. 1895 * 1896 * l2cache and spare devices are ok to be added to a rootpool. 1897 */ 1898 if (spa_bootfs(spa) != 0 && nl2cache == 0 && nspares == 0) { 1899 nvlist_free(config); 1900 spa_close(spa, FTAG); 1901 return (SET_ERROR(EDOM)); 1902 } 1903 1904 if (error == 0) { 1905 error = spa_vdev_add(spa, config); 1906 nvlist_free(config); 1907 } 1908 spa_close(spa, FTAG); 1909 return (error); 1910 } 1911 1912 /* 1913 * inputs: 1914 * zc_name name of the pool 1915 * zc_guid guid of vdev to remove 1916 * zc_cookie cancel removal 1917 */ 1918 static int 1919 zfs_ioc_vdev_remove(zfs_cmd_t *zc) 1920 { 1921 spa_t *spa; 1922 int error; 1923 1924 error = spa_open(zc->zc_name, &spa, FTAG); 1925 if (error != 0) 1926 return (error); 1927 if (zc->zc_cookie != 0) { 1928 error = spa_vdev_remove_cancel(spa); 1929 } else { 1930 error = spa_vdev_remove(spa, zc->zc_guid, B_FALSE); 1931 } 1932 spa_close(spa, FTAG); 1933 return (error); 1934 } 1935 1936 static int 1937 zfs_ioc_vdev_set_state(zfs_cmd_t *zc) 1938 { 1939 spa_t *spa; 1940 int error; 1941 vdev_state_t newstate = VDEV_STATE_UNKNOWN; 1942 1943 if ((error = spa_open(zc->zc_name, &spa, FTAG)) != 0) 1944 return (error); 1945 switch (zc->zc_cookie) { 1946 case VDEV_STATE_ONLINE: 1947 error = vdev_online(spa, zc->zc_guid, zc->zc_obj, &newstate); 1948 break; 1949 1950 case VDEV_STATE_OFFLINE: 1951 error = vdev_offline(spa, zc->zc_guid, zc->zc_obj); 1952 break; 1953 1954 case VDEV_STATE_FAULTED: 1955 if (zc->zc_obj != VDEV_AUX_ERR_EXCEEDED && 1956 zc->zc_obj != VDEV_AUX_EXTERNAL) 1957 zc->zc_obj = VDEV_AUX_ERR_EXCEEDED; 1958 1959 error = vdev_fault(spa, zc->zc_guid, zc->zc_obj); 1960 break; 1961 1962 case VDEV_STATE_DEGRADED: 1963 if (zc->zc_obj != VDEV_AUX_ERR_EXCEEDED && 1964 zc->zc_obj != VDEV_AUX_EXTERNAL) 1965 zc->zc_obj = VDEV_AUX_ERR_EXCEEDED; 1966 1967 error = vdev_degrade(spa, zc->zc_guid, zc->zc_obj); 1968 break; 1969 1970 default: 1971 error = SET_ERROR(EINVAL); 1972 } 1973 zc->zc_cookie = newstate; 1974 spa_close(spa, FTAG); 1975 return (error); 1976 } 1977 1978 static int 1979 zfs_ioc_vdev_attach(zfs_cmd_t *zc) 1980 { 1981 spa_t *spa; 1982 int replacing = zc->zc_cookie; 1983 nvlist_t *config; 1984 int error; 1985 1986 if ((error = spa_open(zc->zc_name, &spa, FTAG)) != 0) 1987 return (error); 1988 1989 if ((error = get_nvlist(zc->zc_nvlist_conf, zc->zc_nvlist_conf_size, 1990 zc->zc_iflags, &config)) == 0) { 1991 error = spa_vdev_attach(spa, zc->zc_guid, config, replacing); 1992 nvlist_free(config); 1993 } 1994 1995 spa_close(spa, FTAG); 1996 return (error); 1997 } 1998 1999 static int 2000 zfs_ioc_vdev_detach(zfs_cmd_t *zc) 2001 { 2002 spa_t *spa; 2003 int error; 2004 2005 if ((error = spa_open(zc->zc_name, &spa, FTAG)) != 0) 2006 return (error); 2007 2008 error = spa_vdev_detach(spa, zc->zc_guid, 0, B_FALSE); 2009 2010 spa_close(spa, FTAG); 2011 return (error); 2012 } 2013 2014 static int 2015 zfs_ioc_vdev_split(zfs_cmd_t *zc) 2016 { 2017 spa_t *spa; 2018 nvlist_t *config, *props = NULL; 2019 int error; 2020 boolean_t exp = !!(zc->zc_cookie & ZPOOL_EXPORT_AFTER_SPLIT); 2021 2022 if ((error = spa_open(zc->zc_name, &spa, FTAG)) != 0) 2023 return (error); 2024 2025 if (error = get_nvlist(zc->zc_nvlist_conf, zc->zc_nvlist_conf_size, 2026 zc->zc_iflags, &config)) { 2027 spa_close(spa, FTAG); 2028 return (error); 2029 } 2030 2031 if (zc->zc_nvlist_src_size != 0 && (error = 2032 get_nvlist(zc->zc_nvlist_src, zc->zc_nvlist_src_size, 2033 zc->zc_iflags, &props))) { 2034 spa_close(spa, FTAG); 2035 nvlist_free(config); 2036 return (error); 2037 } 2038 2039 error = spa_vdev_split_mirror(spa, zc->zc_string, config, props, exp); 2040 2041 spa_close(spa, FTAG); 2042 2043 nvlist_free(config); 2044 nvlist_free(props); 2045 2046 return (error); 2047 } 2048 2049 static int 2050 zfs_ioc_vdev_setpath(zfs_cmd_t *zc) 2051 { 2052 spa_t *spa; 2053 char *path = zc->zc_value; 2054 uint64_t guid = zc->zc_guid; 2055 int error; 2056 2057 error = spa_open(zc->zc_name, &spa, FTAG); 2058 if (error != 0) 2059 return (error); 2060 2061 error = spa_vdev_setpath(spa, guid, path); 2062 spa_close(spa, FTAG); 2063 return (error); 2064 } 2065 2066 static int 2067 zfs_ioc_vdev_setfru(zfs_cmd_t *zc) 2068 { 2069 spa_t *spa; 2070 char *fru = zc->zc_value; 2071 uint64_t guid = zc->zc_guid; 2072 int error; 2073 2074 error = spa_open(zc->zc_name, &spa, FTAG); 2075 if (error != 0) 2076 return (error); 2077 2078 error = spa_vdev_setfru(spa, guid, fru); 2079 spa_close(spa, FTAG); 2080 return (error); 2081 } 2082 2083 static int 2084 zfs_ioc_objset_stats_impl(zfs_cmd_t *zc, objset_t *os) 2085 { 2086 int error = 0; 2087 nvlist_t *nv; 2088 2089 dmu_objset_fast_stat(os, &zc->zc_objset_stats); 2090 2091 if (zc->zc_nvlist_dst != 0 && 2092 (error = dsl_prop_get_all(os, &nv)) == 0) { 2093 dmu_objset_stats(os, nv); 2094 /* 2095 * NB: zvol_get_stats() will read the objset contents, 2096 * which we aren't supposed to do with a 2097 * DS_MODE_USER hold, because it could be 2098 * inconsistent. So this is a bit of a workaround... 2099 * XXX reading with out owning 2100 */ 2101 if (!zc->zc_objset_stats.dds_inconsistent && 2102 dmu_objset_type(os) == DMU_OST_ZVOL) { 2103 error = zvol_get_stats(os, nv); 2104 if (error == EIO) 2105 return (error); 2106 VERIFY0(error); 2107 } 2108 error = put_nvlist(zc, nv); 2109 nvlist_free(nv); 2110 } 2111 2112 return (error); 2113 } 2114 2115 /* 2116 * inputs: 2117 * zc_name name of filesystem 2118 * zc_nvlist_dst_size size of buffer for property nvlist 2119 * 2120 * outputs: 2121 * zc_objset_stats stats 2122 * zc_nvlist_dst property nvlist 2123 * zc_nvlist_dst_size size of property nvlist 2124 */ 2125 static int 2126 zfs_ioc_objset_stats(zfs_cmd_t *zc) 2127 { 2128 objset_t *os; 2129 int error; 2130 2131 error = dmu_objset_hold(zc->zc_name, FTAG, &os); 2132 if (error == 0) { 2133 error = zfs_ioc_objset_stats_impl(zc, os); 2134 dmu_objset_rele(os, FTAG); 2135 } 2136 2137 return (error); 2138 } 2139 2140 /* 2141 * inputs: 2142 * zc_name name of filesystem 2143 * zc_nvlist_dst_size size of buffer for property nvlist 2144 * 2145 * outputs: 2146 * zc_nvlist_dst received property nvlist 2147 * zc_nvlist_dst_size size of received property nvlist 2148 * 2149 * Gets received properties (distinct from local properties on or after 2150 * SPA_VERSION_RECVD_PROPS) for callers who want to differentiate received from 2151 * local property values. 2152 */ 2153 static int 2154 zfs_ioc_objset_recvd_props(zfs_cmd_t *zc) 2155 { 2156 int error = 0; 2157 nvlist_t *nv; 2158 2159 /* 2160 * Without this check, we would return local property values if the 2161 * caller has not already received properties on or after 2162 * SPA_VERSION_RECVD_PROPS. 2163 */ 2164 if (!dsl_prop_get_hasrecvd(zc->zc_name)) 2165 return (SET_ERROR(ENOTSUP)); 2166 2167 if (zc->zc_nvlist_dst != 0 && 2168 (error = dsl_prop_get_received(zc->zc_name, &nv)) == 0) { 2169 error = put_nvlist(zc, nv); 2170 nvlist_free(nv); 2171 } 2172 2173 return (error); 2174 } 2175 2176 static int 2177 nvl_add_zplprop(objset_t *os, nvlist_t *props, zfs_prop_t prop) 2178 { 2179 uint64_t value; 2180 int error; 2181 2182 /* 2183 * zfs_get_zplprop() will either find a value or give us 2184 * the default value (if there is one). 2185 */ 2186 if ((error = zfs_get_zplprop(os, prop, &value)) != 0) 2187 return (error); 2188 VERIFY(nvlist_add_uint64(props, zfs_prop_to_name(prop), value) == 0); 2189 return (0); 2190 } 2191 2192 /* 2193 * inputs: 2194 * zc_name name of filesystem 2195 * zc_nvlist_dst_size size of buffer for zpl property nvlist 2196 * 2197 * outputs: 2198 * zc_nvlist_dst zpl property nvlist 2199 * zc_nvlist_dst_size size of zpl property nvlist 2200 */ 2201 static int 2202 zfs_ioc_objset_zplprops(zfs_cmd_t *zc) 2203 { 2204 objset_t *os; 2205 int err; 2206 2207 /* XXX reading without owning */ 2208 if (err = dmu_objset_hold(zc->zc_name, FTAG, &os)) 2209 return (err); 2210 2211 dmu_objset_fast_stat(os, &zc->zc_objset_stats); 2212 2213 /* 2214 * NB: nvl_add_zplprop() will read the objset contents, 2215 * which we aren't supposed to do with a DS_MODE_USER 2216 * hold, because it could be inconsistent. 2217 */ 2218 if (zc->zc_nvlist_dst != NULL && 2219 !zc->zc_objset_stats.dds_inconsistent && 2220 dmu_objset_type(os) == DMU_OST_ZFS) { 2221 nvlist_t *nv; 2222 2223 VERIFY(nvlist_alloc(&nv, NV_UNIQUE_NAME, KM_SLEEP) == 0); 2224 if ((err = nvl_add_zplprop(os, nv, ZFS_PROP_VERSION)) == 0 && 2225 (err = nvl_add_zplprop(os, nv, ZFS_PROP_NORMALIZE)) == 0 && 2226 (err = nvl_add_zplprop(os, nv, ZFS_PROP_UTF8ONLY)) == 0 && 2227 (err = nvl_add_zplprop(os, nv, ZFS_PROP_CASE)) == 0) 2228 err = put_nvlist(zc, nv); 2229 nvlist_free(nv); 2230 } else { 2231 err = SET_ERROR(ENOENT); 2232 } 2233 dmu_objset_rele(os, FTAG); 2234 return (err); 2235 } 2236 2237 static boolean_t 2238 dataset_name_hidden(const char *name) 2239 { 2240 /* 2241 * Skip over datasets that are not visible in this zone, 2242 * internal datasets (which have a $ in their name), and 2243 * temporary datasets (which have a % in their name). 2244 */ 2245 if (strchr(name, '$') != NULL) 2246 return (B_TRUE); 2247 if (strchr(name, '%') != NULL) 2248 return (B_TRUE); 2249 if (!INGLOBALZONE(curproc) && !zone_dataset_visible(name, NULL)) 2250 return (B_TRUE); 2251 return (B_FALSE); 2252 } 2253 2254 /* 2255 * inputs: 2256 * zc_name name of filesystem 2257 * zc_cookie zap cursor 2258 * zc_nvlist_dst_size size of buffer for property nvlist 2259 * 2260 * outputs: 2261 * zc_name name of next filesystem 2262 * zc_cookie zap cursor 2263 * zc_objset_stats stats 2264 * zc_nvlist_dst property nvlist 2265 * zc_nvlist_dst_size size of property nvlist 2266 */ 2267 static int 2268 zfs_ioc_dataset_list_next(zfs_cmd_t *zc) 2269 { 2270 objset_t *os; 2271 int error; 2272 char *p; 2273 size_t orig_len = strlen(zc->zc_name); 2274 2275 top: 2276 if (error = dmu_objset_hold(zc->zc_name, FTAG, &os)) { 2277 if (error == ENOENT) 2278 error = SET_ERROR(ESRCH); 2279 return (error); 2280 } 2281 2282 p = strrchr(zc->zc_name, '/'); 2283 if (p == NULL || p[1] != '\0') 2284 (void) strlcat(zc->zc_name, "/", sizeof (zc->zc_name)); 2285 p = zc->zc_name + strlen(zc->zc_name); 2286 2287 do { 2288 error = dmu_dir_list_next(os, 2289 sizeof (zc->zc_name) - (p - zc->zc_name), p, 2290 NULL, &zc->zc_cookie); 2291 if (error == ENOENT) 2292 error = SET_ERROR(ESRCH); 2293 } while (error == 0 && dataset_name_hidden(zc->zc_name)); 2294 dmu_objset_rele(os, FTAG); 2295 2296 /* 2297 * If it's an internal dataset (ie. with a '$' in its name), 2298 * don't try to get stats for it, otherwise we'll return ENOENT. 2299 */ 2300 if (error == 0 && strchr(zc->zc_name, '$') == NULL) { 2301 error = zfs_ioc_objset_stats(zc); /* fill in the stats */ 2302 if (error == ENOENT) { 2303 /* We lost a race with destroy, get the next one. */ 2304 zc->zc_name[orig_len] = '\0'; 2305 goto top; 2306 } 2307 } 2308 return (error); 2309 } 2310 2311 /* 2312 * inputs: 2313 * zc_name name of filesystem 2314 * zc_cookie zap cursor 2315 * zc_nvlist_dst_size size of buffer for property nvlist 2316 * zc_simple when set, only name is requested 2317 * 2318 * outputs: 2319 * zc_name name of next snapshot 2320 * zc_objset_stats stats 2321 * zc_nvlist_dst property nvlist 2322 * zc_nvlist_dst_size size of property nvlist 2323 */ 2324 static int 2325 zfs_ioc_snapshot_list_next(zfs_cmd_t *zc) 2326 { 2327 objset_t *os; 2328 int error; 2329 2330 error = dmu_objset_hold(zc->zc_name, FTAG, &os); 2331 if (error != 0) { 2332 return (error == ENOENT ? ESRCH : error); 2333 } 2334 2335 /* 2336 * A dataset name of maximum length cannot have any snapshots, 2337 * so exit immediately. 2338 */ 2339 if (strlcat(zc->zc_name, "@", sizeof (zc->zc_name)) >= 2340 ZFS_MAX_DATASET_NAME_LEN) { 2341 dmu_objset_rele(os, FTAG); 2342 return (SET_ERROR(ESRCH)); 2343 } 2344 2345 error = dmu_snapshot_list_next(os, 2346 sizeof (zc->zc_name) - strlen(zc->zc_name), 2347 zc->zc_name + strlen(zc->zc_name), &zc->zc_obj, &zc->zc_cookie, 2348 NULL); 2349 2350 if (error == 0 && !zc->zc_simple) { 2351 dsl_dataset_t *ds; 2352 dsl_pool_t *dp = os->os_dsl_dataset->ds_dir->dd_pool; 2353 2354 error = dsl_dataset_hold_obj(dp, zc->zc_obj, FTAG, &ds); 2355 if (error == 0) { 2356 objset_t *ossnap; 2357 2358 error = dmu_objset_from_ds(ds, &ossnap); 2359 if (error == 0) 2360 error = zfs_ioc_objset_stats_impl(zc, ossnap); 2361 dsl_dataset_rele(ds, FTAG); 2362 } 2363 } else if (error == ENOENT) { 2364 error = SET_ERROR(ESRCH); 2365 } 2366 2367 dmu_objset_rele(os, FTAG); 2368 /* if we failed, undo the @ that we tacked on to zc_name */ 2369 if (error != 0) 2370 *strchr(zc->zc_name, '@') = '\0'; 2371 return (error); 2372 } 2373 2374 static int 2375 zfs_prop_set_userquota(const char *dsname, nvpair_t *pair) 2376 { 2377 const char *propname = nvpair_name(pair); 2378 uint64_t *valary; 2379 unsigned int vallen; 2380 const char *domain; 2381 char *dash; 2382 zfs_userquota_prop_t type; 2383 uint64_t rid; 2384 uint64_t quota; 2385 zfsvfs_t *zfsvfs; 2386 int err; 2387 2388 if (nvpair_type(pair) == DATA_TYPE_NVLIST) { 2389 nvlist_t *attrs; 2390 VERIFY(nvpair_value_nvlist(pair, &attrs) == 0); 2391 if (nvlist_lookup_nvpair(attrs, ZPROP_VALUE, 2392 &pair) != 0) 2393 return (SET_ERROR(EINVAL)); 2394 } 2395 2396 /* 2397 * A correctly constructed propname is encoded as 2398 * userquota@<rid>-<domain>. 2399 */ 2400 if ((dash = strchr(propname, '-')) == NULL || 2401 nvpair_value_uint64_array(pair, &valary, &vallen) != 0 || 2402 vallen != 3) 2403 return (SET_ERROR(EINVAL)); 2404 2405 domain = dash + 1; 2406 type = valary[0]; 2407 rid = valary[1]; 2408 quota = valary[2]; 2409 2410 err = zfsvfs_hold(dsname, FTAG, &zfsvfs, B_FALSE); 2411 if (err == 0) { 2412 err = zfs_set_userquota(zfsvfs, type, domain, rid, quota); 2413 zfsvfs_rele(zfsvfs, FTAG); 2414 } 2415 2416 return (err); 2417 } 2418 2419 /* 2420 * If the named property is one that has a special function to set its value, 2421 * return 0 on success and a positive error code on failure; otherwise if it is 2422 * not one of the special properties handled by this function, return -1. 2423 * 2424 * XXX: It would be better for callers of the property interface if we handled 2425 * these special cases in dsl_prop.c (in the dsl layer). 2426 */ 2427 static int 2428 zfs_prop_set_special(const char *dsname, zprop_source_t source, 2429 nvpair_t *pair) 2430 { 2431 const char *propname = nvpair_name(pair); 2432 zfs_prop_t prop = zfs_name_to_prop(propname); 2433 uint64_t intval; 2434 int err = -1; 2435 2436 if (prop == ZPROP_INVAL) { 2437 if (zfs_prop_userquota(propname)) 2438 return (zfs_prop_set_userquota(dsname, pair)); 2439 return (-1); 2440 } 2441 2442 if (nvpair_type(pair) == DATA_TYPE_NVLIST) { 2443 nvlist_t *attrs; 2444 VERIFY(nvpair_value_nvlist(pair, &attrs) == 0); 2445 VERIFY(nvlist_lookup_nvpair(attrs, ZPROP_VALUE, 2446 &pair) == 0); 2447 } 2448 2449 if (zfs_prop_get_type(prop) == PROP_TYPE_STRING) 2450 return (-1); 2451 2452 VERIFY(0 == nvpair_value_uint64(pair, &intval)); 2453 2454 switch (prop) { 2455 case ZFS_PROP_QUOTA: 2456 err = dsl_dir_set_quota(dsname, source, intval); 2457 break; 2458 case ZFS_PROP_REFQUOTA: 2459 err = dsl_dataset_set_refquota(dsname, source, intval); 2460 break; 2461 case ZFS_PROP_FILESYSTEM_LIMIT: 2462 case ZFS_PROP_SNAPSHOT_LIMIT: 2463 if (intval == UINT64_MAX) { 2464 /* clearing the limit, just do it */ 2465 err = 0; 2466 } else { 2467 err = dsl_dir_activate_fs_ss_limit(dsname); 2468 } 2469 /* 2470 * Set err to -1 to force the zfs_set_prop_nvlist code down the 2471 * default path to set the value in the nvlist. 2472 */ 2473 if (err == 0) 2474 err = -1; 2475 break; 2476 case ZFS_PROP_RESERVATION: 2477 err = dsl_dir_set_reservation(dsname, source, intval); 2478 break; 2479 case ZFS_PROP_REFRESERVATION: 2480 err = dsl_dataset_set_refreservation(dsname, source, intval); 2481 break; 2482 case ZFS_PROP_VOLSIZE: 2483 err = zvol_set_volsize(dsname, intval); 2484 break; 2485 case ZFS_PROP_VERSION: 2486 { 2487 zfsvfs_t *zfsvfs; 2488 2489 if ((err = zfsvfs_hold(dsname, FTAG, &zfsvfs, B_TRUE)) != 0) 2490 break; 2491 2492 err = zfs_set_version(zfsvfs, intval); 2493 zfsvfs_rele(zfsvfs, FTAG); 2494 2495 if (err == 0 && intval >= ZPL_VERSION_USERSPACE) { 2496 zfs_cmd_t *zc; 2497 2498 zc = kmem_zalloc(sizeof (zfs_cmd_t), KM_SLEEP); 2499 (void) strcpy(zc->zc_name, dsname); 2500 (void) zfs_ioc_userspace_upgrade(zc); 2501 kmem_free(zc, sizeof (zfs_cmd_t)); 2502 } 2503 break; 2504 } 2505 default: 2506 err = -1; 2507 } 2508 2509 return (err); 2510 } 2511 2512 /* 2513 * This function is best effort. If it fails to set any of the given properties, 2514 * it continues to set as many as it can and returns the last error 2515 * encountered. If the caller provides a non-NULL errlist, it will be filled in 2516 * with the list of names of all the properties that failed along with the 2517 * corresponding error numbers. 2518 * 2519 * If every property is set successfully, zero is returned and errlist is not 2520 * modified. 2521 */ 2522 int 2523 zfs_set_prop_nvlist(const char *dsname, zprop_source_t source, nvlist_t *nvl, 2524 nvlist_t *errlist) 2525 { 2526 nvpair_t *pair; 2527 nvpair_t *propval; 2528 int rv = 0; 2529 uint64_t intval; 2530 char *strval; 2531 nvlist_t *genericnvl = fnvlist_alloc(); 2532 nvlist_t *retrynvl = fnvlist_alloc(); 2533 2534 retry: 2535 pair = NULL; 2536 while ((pair = nvlist_next_nvpair(nvl, pair)) != NULL) { 2537 const char *propname = nvpair_name(pair); 2538 zfs_prop_t prop = zfs_name_to_prop(propname); 2539 int err = 0; 2540 2541 /* decode the property value */ 2542 propval = pair; 2543 if (nvpair_type(pair) == DATA_TYPE_NVLIST) { 2544 nvlist_t *attrs; 2545 attrs = fnvpair_value_nvlist(pair); 2546 if (nvlist_lookup_nvpair(attrs, ZPROP_VALUE, 2547 &propval) != 0) 2548 err = SET_ERROR(EINVAL); 2549 } 2550 2551 /* Validate value type */ 2552 if (err == 0 && prop == ZPROP_INVAL) { 2553 if (zfs_prop_user(propname)) { 2554 if (nvpair_type(propval) != DATA_TYPE_STRING) 2555 err = SET_ERROR(EINVAL); 2556 } else if (zfs_prop_userquota(propname)) { 2557 if (nvpair_type(propval) != 2558 DATA_TYPE_UINT64_ARRAY) 2559 err = SET_ERROR(EINVAL); 2560 } else { 2561 err = SET_ERROR(EINVAL); 2562 } 2563 } else if (err == 0) { 2564 if (nvpair_type(propval) == DATA_TYPE_STRING) { 2565 if (zfs_prop_get_type(prop) != PROP_TYPE_STRING) 2566 err = SET_ERROR(EINVAL); 2567 } else if (nvpair_type(propval) == DATA_TYPE_UINT64) { 2568 const char *unused; 2569 2570 intval = fnvpair_value_uint64(propval); 2571 2572 switch (zfs_prop_get_type(prop)) { 2573 case PROP_TYPE_NUMBER: 2574 break; 2575 case PROP_TYPE_STRING: 2576 err = SET_ERROR(EINVAL); 2577 break; 2578 case PROP_TYPE_INDEX: 2579 if (zfs_prop_index_to_string(prop, 2580 intval, &unused) != 0) 2581 err = SET_ERROR(EINVAL); 2582 break; 2583 default: 2584 cmn_err(CE_PANIC, 2585 "unknown property type"); 2586 } 2587 } else { 2588 err = SET_ERROR(EINVAL); 2589 } 2590 } 2591 2592 /* Validate permissions */ 2593 if (err == 0) 2594 err = zfs_check_settable(dsname, pair, CRED()); 2595 2596 if (err == 0) { 2597 err = zfs_prop_set_special(dsname, source, pair); 2598 if (err == -1) { 2599 /* 2600 * For better performance we build up a list of 2601 * properties to set in a single transaction. 2602 */ 2603 err = nvlist_add_nvpair(genericnvl, pair); 2604 } else if (err != 0 && nvl != retrynvl) { 2605 /* 2606 * This may be a spurious error caused by 2607 * receiving quota and reservation out of order. 2608 * Try again in a second pass. 2609 */ 2610 err = nvlist_add_nvpair(retrynvl, pair); 2611 } 2612 } 2613 2614 if (err != 0) { 2615 if (errlist != NULL) 2616 fnvlist_add_int32(errlist, propname, err); 2617 rv = err; 2618 } 2619 } 2620 2621 if (nvl != retrynvl && !nvlist_empty(retrynvl)) { 2622 nvl = retrynvl; 2623 goto retry; 2624 } 2625 2626 if (!nvlist_empty(genericnvl) && 2627 dsl_props_set(dsname, source, genericnvl) != 0) { 2628 /* 2629 * If this fails, we still want to set as many properties as we 2630 * can, so try setting them individually. 2631 */ 2632 pair = NULL; 2633 while ((pair = nvlist_next_nvpair(genericnvl, pair)) != NULL) { 2634 const char *propname = nvpair_name(pair); 2635 int err = 0; 2636 2637 propval = pair; 2638 if (nvpair_type(pair) == DATA_TYPE_NVLIST) { 2639 nvlist_t *attrs; 2640 attrs = fnvpair_value_nvlist(pair); 2641 propval = fnvlist_lookup_nvpair(attrs, 2642 ZPROP_VALUE); 2643 } 2644 2645 if (nvpair_type(propval) == DATA_TYPE_STRING) { 2646 strval = fnvpair_value_string(propval); 2647 err = dsl_prop_set_string(dsname, propname, 2648 source, strval); 2649 } else { 2650 intval = fnvpair_value_uint64(propval); 2651 err = dsl_prop_set_int(dsname, propname, source, 2652 intval); 2653 } 2654 2655 if (err != 0) { 2656 if (errlist != NULL) { 2657 fnvlist_add_int32(errlist, propname, 2658 err); 2659 } 2660 rv = err; 2661 } 2662 } 2663 } 2664 nvlist_free(genericnvl); 2665 nvlist_free(retrynvl); 2666 2667 return (rv); 2668 } 2669 2670 /* 2671 * Check that all the properties are valid user properties. 2672 */ 2673 static int 2674 zfs_check_userprops(const char *fsname, nvlist_t *nvl) 2675 { 2676 nvpair_t *pair = NULL; 2677 int error = 0; 2678 2679 while ((pair = nvlist_next_nvpair(nvl, pair)) != NULL) { 2680 const char *propname = nvpair_name(pair); 2681 2682 if (!zfs_prop_user(propname) || 2683 nvpair_type(pair) != DATA_TYPE_STRING) 2684 return (SET_ERROR(EINVAL)); 2685 2686 if (error = zfs_secpolicy_write_perms(fsname, 2687 ZFS_DELEG_PERM_USERPROP, CRED())) 2688 return (error); 2689 2690 if (strlen(propname) >= ZAP_MAXNAMELEN) 2691 return (SET_ERROR(ENAMETOOLONG)); 2692 2693 if (strlen(fnvpair_value_string(pair)) >= ZAP_MAXVALUELEN) 2694 return (E2BIG); 2695 } 2696 return (0); 2697 } 2698 2699 static void 2700 props_skip(nvlist_t *props, nvlist_t *skipped, nvlist_t **newprops) 2701 { 2702 nvpair_t *pair; 2703 2704 VERIFY(nvlist_alloc(newprops, NV_UNIQUE_NAME, KM_SLEEP) == 0); 2705 2706 pair = NULL; 2707 while ((pair = nvlist_next_nvpair(props, pair)) != NULL) { 2708 if (nvlist_exists(skipped, nvpair_name(pair))) 2709 continue; 2710 2711 VERIFY(nvlist_add_nvpair(*newprops, pair) == 0); 2712 } 2713 } 2714 2715 static int 2716 clear_received_props(const char *dsname, nvlist_t *props, 2717 nvlist_t *skipped) 2718 { 2719 int err = 0; 2720 nvlist_t *cleared_props = NULL; 2721 props_skip(props, skipped, &cleared_props); 2722 if (!nvlist_empty(cleared_props)) { 2723 /* 2724 * Acts on local properties until the dataset has received 2725 * properties at least once on or after SPA_VERSION_RECVD_PROPS. 2726 */ 2727 zprop_source_t flags = (ZPROP_SRC_NONE | 2728 (dsl_prop_get_hasrecvd(dsname) ? ZPROP_SRC_RECEIVED : 0)); 2729 err = zfs_set_prop_nvlist(dsname, flags, cleared_props, NULL); 2730 } 2731 nvlist_free(cleared_props); 2732 return (err); 2733 } 2734 2735 /* 2736 * inputs: 2737 * zc_name name of filesystem 2738 * zc_value name of property to set 2739 * zc_nvlist_src{_size} nvlist of properties to apply 2740 * zc_cookie received properties flag 2741 * 2742 * outputs: 2743 * zc_nvlist_dst{_size} error for each unapplied received property 2744 */ 2745 static int 2746 zfs_ioc_set_prop(zfs_cmd_t *zc) 2747 { 2748 nvlist_t *nvl; 2749 boolean_t received = zc->zc_cookie; 2750 zprop_source_t source = (received ? ZPROP_SRC_RECEIVED : 2751 ZPROP_SRC_LOCAL); 2752 nvlist_t *errors; 2753 int error; 2754 2755 if ((error = get_nvlist(zc->zc_nvlist_src, zc->zc_nvlist_src_size, 2756 zc->zc_iflags, &nvl)) != 0) 2757 return (error); 2758 2759 if (received) { 2760 nvlist_t *origprops; 2761 2762 if (dsl_prop_get_received(zc->zc_name, &origprops) == 0) { 2763 (void) clear_received_props(zc->zc_name, 2764 origprops, nvl); 2765 nvlist_free(origprops); 2766 } 2767 2768 error = dsl_prop_set_hasrecvd(zc->zc_name); 2769 } 2770 2771 errors = fnvlist_alloc(); 2772 if (error == 0) 2773 error = zfs_set_prop_nvlist(zc->zc_name, source, nvl, errors); 2774 2775 if (zc->zc_nvlist_dst != NULL && errors != NULL) { 2776 (void) put_nvlist(zc, errors); 2777 } 2778 2779 nvlist_free(errors); 2780 nvlist_free(nvl); 2781 return (error); 2782 } 2783 2784 /* 2785 * inputs: 2786 * zc_name name of filesystem 2787 * zc_value name of property to inherit 2788 * zc_cookie revert to received value if TRUE 2789 * 2790 * outputs: none 2791 */ 2792 static int 2793 zfs_ioc_inherit_prop(zfs_cmd_t *zc) 2794 { 2795 const char *propname = zc->zc_value; 2796 zfs_prop_t prop = zfs_name_to_prop(propname); 2797 boolean_t received = zc->zc_cookie; 2798 zprop_source_t source = (received 2799 ? ZPROP_SRC_NONE /* revert to received value, if any */ 2800 : ZPROP_SRC_INHERITED); /* explicitly inherit */ 2801 2802 if (received) { 2803 nvlist_t *dummy; 2804 nvpair_t *pair; 2805 zprop_type_t type; 2806 int err; 2807 2808 /* 2809 * zfs_prop_set_special() expects properties in the form of an 2810 * nvpair with type info. 2811 */ 2812 if (prop == ZPROP_INVAL) { 2813 if (!zfs_prop_user(propname)) 2814 return (SET_ERROR(EINVAL)); 2815 2816 type = PROP_TYPE_STRING; 2817 } else if (prop == ZFS_PROP_VOLSIZE || 2818 prop == ZFS_PROP_VERSION) { 2819 return (SET_ERROR(EINVAL)); 2820 } else { 2821 type = zfs_prop_get_type(prop); 2822 } 2823 2824 VERIFY(nvlist_alloc(&dummy, NV_UNIQUE_NAME, KM_SLEEP) == 0); 2825 2826 switch (type) { 2827 case PROP_TYPE_STRING: 2828 VERIFY(0 == nvlist_add_string(dummy, propname, "")); 2829 break; 2830 case PROP_TYPE_NUMBER: 2831 case PROP_TYPE_INDEX: 2832 VERIFY(0 == nvlist_add_uint64(dummy, propname, 0)); 2833 break; 2834 default: 2835 nvlist_free(dummy); 2836 return (SET_ERROR(EINVAL)); 2837 } 2838 2839 pair = nvlist_next_nvpair(dummy, NULL); 2840 err = zfs_prop_set_special(zc->zc_name, source, pair); 2841 nvlist_free(dummy); 2842 if (err != -1) 2843 return (err); /* special property already handled */ 2844 } else { 2845 /* 2846 * Only check this in the non-received case. We want to allow 2847 * 'inherit -S' to revert non-inheritable properties like quota 2848 * and reservation to the received or default values even though 2849 * they are not considered inheritable. 2850 */ 2851 if (prop != ZPROP_INVAL && !zfs_prop_inheritable(prop)) 2852 return (SET_ERROR(EINVAL)); 2853 } 2854 2855 /* property name has been validated by zfs_secpolicy_inherit_prop() */ 2856 return (dsl_prop_inherit(zc->zc_name, zc->zc_value, source)); 2857 } 2858 2859 static int 2860 zfs_ioc_pool_set_props(zfs_cmd_t *zc) 2861 { 2862 nvlist_t *props; 2863 spa_t *spa; 2864 int error; 2865 nvpair_t *pair; 2866 2867 if (error = get_nvlist(zc->zc_nvlist_src, zc->zc_nvlist_src_size, 2868 zc->zc_iflags, &props)) 2869 return (error); 2870 2871 /* 2872 * If the only property is the configfile, then just do a spa_lookup() 2873 * to handle the faulted case. 2874 */ 2875 pair = nvlist_next_nvpair(props, NULL); 2876 if (pair != NULL && strcmp(nvpair_name(pair), 2877 zpool_prop_to_name(ZPOOL_PROP_CACHEFILE)) == 0 && 2878 nvlist_next_nvpair(props, pair) == NULL) { 2879 mutex_enter(&spa_namespace_lock); 2880 if ((spa = spa_lookup(zc->zc_name)) != NULL) { 2881 spa_configfile_set(spa, props, B_FALSE); 2882 spa_write_cachefile(spa, B_FALSE, B_TRUE); 2883 } 2884 mutex_exit(&spa_namespace_lock); 2885 if (spa != NULL) { 2886 nvlist_free(props); 2887 return (0); 2888 } 2889 } 2890 2891 if ((error = spa_open(zc->zc_name, &spa, FTAG)) != 0) { 2892 nvlist_free(props); 2893 return (error); 2894 } 2895 2896 error = spa_prop_set(spa, props); 2897 2898 nvlist_free(props); 2899 spa_close(spa, FTAG); 2900 2901 return (error); 2902 } 2903 2904 static int 2905 zfs_ioc_pool_get_props(zfs_cmd_t *zc) 2906 { 2907 spa_t *spa; 2908 int error; 2909 nvlist_t *nvp = NULL; 2910 2911 if ((error = spa_open(zc->zc_name, &spa, FTAG)) != 0) { 2912 /* 2913 * If the pool is faulted, there may be properties we can still 2914 * get (such as altroot and cachefile), so attempt to get them 2915 * anyway. 2916 */ 2917 mutex_enter(&spa_namespace_lock); 2918 if ((spa = spa_lookup(zc->zc_name)) != NULL) 2919 error = spa_prop_get(spa, &nvp); 2920 mutex_exit(&spa_namespace_lock); 2921 } else { 2922 error = spa_prop_get(spa, &nvp); 2923 spa_close(spa, FTAG); 2924 } 2925 2926 if (error == 0 && zc->zc_nvlist_dst != NULL) 2927 error = put_nvlist(zc, nvp); 2928 else 2929 error = SET_ERROR(EFAULT); 2930 2931 nvlist_free(nvp); 2932 return (error); 2933 } 2934 2935 /* 2936 * inputs: 2937 * zc_name name of filesystem 2938 * zc_nvlist_src{_size} nvlist of delegated permissions 2939 * zc_perm_action allow/unallow flag 2940 * 2941 * outputs: none 2942 */ 2943 static int 2944 zfs_ioc_set_fsacl(zfs_cmd_t *zc) 2945 { 2946 int error; 2947 nvlist_t *fsaclnv = NULL; 2948 2949 if ((error = get_nvlist(zc->zc_nvlist_src, zc->zc_nvlist_src_size, 2950 zc->zc_iflags, &fsaclnv)) != 0) 2951 return (error); 2952 2953 /* 2954 * Verify nvlist is constructed correctly 2955 */ 2956 if ((error = zfs_deleg_verify_nvlist(fsaclnv)) != 0) { 2957 nvlist_free(fsaclnv); 2958 return (SET_ERROR(EINVAL)); 2959 } 2960 2961 /* 2962 * If we don't have PRIV_SYS_MOUNT, then validate 2963 * that user is allowed to hand out each permission in 2964 * the nvlist(s) 2965 */ 2966 2967 error = secpolicy_zfs(CRED()); 2968 if (error != 0) { 2969 if (zc->zc_perm_action == B_FALSE) { 2970 error = dsl_deleg_can_allow(zc->zc_name, 2971 fsaclnv, CRED()); 2972 } else { 2973 error = dsl_deleg_can_unallow(zc->zc_name, 2974 fsaclnv, CRED()); 2975 } 2976 } 2977 2978 if (error == 0) 2979 error = dsl_deleg_set(zc->zc_name, fsaclnv, zc->zc_perm_action); 2980 2981 nvlist_free(fsaclnv); 2982 return (error); 2983 } 2984 2985 /* 2986 * inputs: 2987 * zc_name name of filesystem 2988 * 2989 * outputs: 2990 * zc_nvlist_src{_size} nvlist of delegated permissions 2991 */ 2992 static int 2993 zfs_ioc_get_fsacl(zfs_cmd_t *zc) 2994 { 2995 nvlist_t *nvp; 2996 int error; 2997 2998 if ((error = dsl_deleg_get(zc->zc_name, &nvp)) == 0) { 2999 error = put_nvlist(zc, nvp); 3000 nvlist_free(nvp); 3001 } 3002 3003 return (error); 3004 } 3005 3006 /* ARGSUSED */ 3007 static void 3008 zfs_create_cb(objset_t *os, void *arg, cred_t *cr, dmu_tx_t *tx) 3009 { 3010 zfs_creat_t *zct = arg; 3011 3012 zfs_create_fs(os, cr, zct->zct_zplprops, tx); 3013 } 3014 3015 #define ZFS_PROP_UNDEFINED ((uint64_t)-1) 3016 3017 /* 3018 * inputs: 3019 * os parent objset pointer (NULL if root fs) 3020 * fuids_ok fuids allowed in this version of the spa? 3021 * sa_ok SAs allowed in this version of the spa? 3022 * createprops list of properties requested by creator 3023 * 3024 * outputs: 3025 * zplprops values for the zplprops we attach to the master node object 3026 * is_ci true if requested file system will be purely case-insensitive 3027 * 3028 * Determine the settings for utf8only, normalization and 3029 * casesensitivity. Specific values may have been requested by the 3030 * creator and/or we can inherit values from the parent dataset. If 3031 * the file system is of too early a vintage, a creator can not 3032 * request settings for these properties, even if the requested 3033 * setting is the default value. We don't actually want to create dsl 3034 * properties for these, so remove them from the source nvlist after 3035 * processing. 3036 */ 3037 static int 3038 zfs_fill_zplprops_impl(objset_t *os, uint64_t zplver, 3039 boolean_t fuids_ok, boolean_t sa_ok, nvlist_t *createprops, 3040 nvlist_t *zplprops, boolean_t *is_ci) 3041 { 3042 uint64_t sense = ZFS_PROP_UNDEFINED; 3043 uint64_t norm = ZFS_PROP_UNDEFINED; 3044 uint64_t u8 = ZFS_PROP_UNDEFINED; 3045 3046 ASSERT(zplprops != NULL); 3047 3048 if (os != NULL && os->os_phys->os_type != DMU_OST_ZFS) 3049 return (SET_ERROR(EINVAL)); 3050 3051 /* 3052 * Pull out creator prop choices, if any. 3053 */ 3054 if (createprops) { 3055 (void) nvlist_lookup_uint64(createprops, 3056 zfs_prop_to_name(ZFS_PROP_VERSION), &zplver); 3057 (void) nvlist_lookup_uint64(createprops, 3058 zfs_prop_to_name(ZFS_PROP_NORMALIZE), &norm); 3059 (void) nvlist_remove_all(createprops, 3060 zfs_prop_to_name(ZFS_PROP_NORMALIZE)); 3061 (void) nvlist_lookup_uint64(createprops, 3062 zfs_prop_to_name(ZFS_PROP_UTF8ONLY), &u8); 3063 (void) nvlist_remove_all(createprops, 3064 zfs_prop_to_name(ZFS_PROP_UTF8ONLY)); 3065 (void) nvlist_lookup_uint64(createprops, 3066 zfs_prop_to_name(ZFS_PROP_CASE), &sense); 3067 (void) nvlist_remove_all(createprops, 3068 zfs_prop_to_name(ZFS_PROP_CASE)); 3069 } 3070 3071 /* 3072 * If the zpl version requested is whacky or the file system 3073 * or pool is version is too "young" to support normalization 3074 * and the creator tried to set a value for one of the props, 3075 * error out. 3076 */ 3077 if ((zplver < ZPL_VERSION_INITIAL || zplver > ZPL_VERSION) || 3078 (zplver >= ZPL_VERSION_FUID && !fuids_ok) || 3079 (zplver >= ZPL_VERSION_SA && !sa_ok) || 3080 (zplver < ZPL_VERSION_NORMALIZATION && 3081 (norm != ZFS_PROP_UNDEFINED || u8 != ZFS_PROP_UNDEFINED || 3082 sense != ZFS_PROP_UNDEFINED))) 3083 return (SET_ERROR(ENOTSUP)); 3084 3085 /* 3086 * Put the version in the zplprops 3087 */ 3088 VERIFY(nvlist_add_uint64(zplprops, 3089 zfs_prop_to_name(ZFS_PROP_VERSION), zplver) == 0); 3090 3091 if (norm == ZFS_PROP_UNDEFINED) 3092 VERIFY(zfs_get_zplprop(os, ZFS_PROP_NORMALIZE, &norm) == 0); 3093 VERIFY(nvlist_add_uint64(zplprops, 3094 zfs_prop_to_name(ZFS_PROP_NORMALIZE), norm) == 0); 3095 3096 /* 3097 * If we're normalizing, names must always be valid UTF-8 strings. 3098 */ 3099 if (norm) 3100 u8 = 1; 3101 if (u8 == ZFS_PROP_UNDEFINED) 3102 VERIFY(zfs_get_zplprop(os, ZFS_PROP_UTF8ONLY, &u8) == 0); 3103 VERIFY(nvlist_add_uint64(zplprops, 3104 zfs_prop_to_name(ZFS_PROP_UTF8ONLY), u8) == 0); 3105 3106 if (sense == ZFS_PROP_UNDEFINED) 3107 VERIFY(zfs_get_zplprop(os, ZFS_PROP_CASE, &sense) == 0); 3108 VERIFY(nvlist_add_uint64(zplprops, 3109 zfs_prop_to_name(ZFS_PROP_CASE), sense) == 0); 3110 3111 if (is_ci) 3112 *is_ci = (sense == ZFS_CASE_INSENSITIVE); 3113 3114 return (0); 3115 } 3116 3117 static int 3118 zfs_fill_zplprops(const char *dataset, nvlist_t *createprops, 3119 nvlist_t *zplprops, boolean_t *is_ci) 3120 { 3121 boolean_t fuids_ok, sa_ok; 3122 uint64_t zplver = ZPL_VERSION; 3123 objset_t *os = NULL; 3124 char parentname[ZFS_MAX_DATASET_NAME_LEN]; 3125 char *cp; 3126 spa_t *spa; 3127 uint64_t spa_vers; 3128 int error; 3129 3130 (void) strlcpy(parentname, dataset, sizeof (parentname)); 3131 cp = strrchr(parentname, '/'); 3132 ASSERT(cp != NULL); 3133 cp[0] = '\0'; 3134 3135 if ((error = spa_open(dataset, &spa, FTAG)) != 0) 3136 return (error); 3137 3138 spa_vers = spa_version(spa); 3139 spa_close(spa, FTAG); 3140 3141 zplver = zfs_zpl_version_map(spa_vers); 3142 fuids_ok = (zplver >= ZPL_VERSION_FUID); 3143 sa_ok = (zplver >= ZPL_VERSION_SA); 3144 3145 /* 3146 * Open parent object set so we can inherit zplprop values. 3147 */ 3148 if ((error = dmu_objset_hold(parentname, FTAG, &os)) != 0) 3149 return (error); 3150 3151 error = zfs_fill_zplprops_impl(os, zplver, fuids_ok, sa_ok, createprops, 3152 zplprops, is_ci); 3153 dmu_objset_rele(os, FTAG); 3154 return (error); 3155 } 3156 3157 static int 3158 zfs_fill_zplprops_root(uint64_t spa_vers, nvlist_t *createprops, 3159 nvlist_t *zplprops, boolean_t *is_ci) 3160 { 3161 boolean_t fuids_ok; 3162 boolean_t sa_ok; 3163 uint64_t zplver = ZPL_VERSION; 3164 int error; 3165 3166 zplver = zfs_zpl_version_map(spa_vers); 3167 fuids_ok = (zplver >= ZPL_VERSION_FUID); 3168 sa_ok = (zplver >= ZPL_VERSION_SA); 3169 3170 error = zfs_fill_zplprops_impl(NULL, zplver, fuids_ok, sa_ok, 3171 createprops, zplprops, is_ci); 3172 return (error); 3173 } 3174 3175 /* 3176 * innvl: { 3177 * "type" -> dmu_objset_type_t (int32) 3178 * (optional) "props" -> { prop -> value } 3179 * } 3180 * 3181 * outnvl: propname -> error code (int32) 3182 */ 3183 static int 3184 zfs_ioc_create(const char *fsname, nvlist_t *innvl, nvlist_t *outnvl) 3185 { 3186 int error = 0; 3187 zfs_creat_t zct = { 0 }; 3188 nvlist_t *nvprops = NULL; 3189 void (*cbfunc)(objset_t *os, void *arg, cred_t *cr, dmu_tx_t *tx); 3190 int32_t type32; 3191 dmu_objset_type_t type; 3192 boolean_t is_insensitive = B_FALSE; 3193 3194 if (nvlist_lookup_int32(innvl, "type", &type32) != 0) 3195 return (SET_ERROR(EINVAL)); 3196 type = type32; 3197 (void) nvlist_lookup_nvlist(innvl, "props", &nvprops); 3198 3199 switch (type) { 3200 case DMU_OST_ZFS: 3201 cbfunc = zfs_create_cb; 3202 break; 3203 3204 case DMU_OST_ZVOL: 3205 cbfunc = zvol_create_cb; 3206 break; 3207 3208 default: 3209 cbfunc = NULL; 3210 break; 3211 } 3212 if (strchr(fsname, '@') || 3213 strchr(fsname, '%')) 3214 return (SET_ERROR(EINVAL)); 3215 3216 zct.zct_props = nvprops; 3217 3218 if (cbfunc == NULL) 3219 return (SET_ERROR(EINVAL)); 3220 3221 if (type == DMU_OST_ZVOL) { 3222 uint64_t volsize, volblocksize; 3223 3224 if (nvprops == NULL) 3225 return (SET_ERROR(EINVAL)); 3226 if (nvlist_lookup_uint64(nvprops, 3227 zfs_prop_to_name(ZFS_PROP_VOLSIZE), &volsize) != 0) 3228 return (SET_ERROR(EINVAL)); 3229 3230 if ((error = nvlist_lookup_uint64(nvprops, 3231 zfs_prop_to_name(ZFS_PROP_VOLBLOCKSIZE), 3232 &volblocksize)) != 0 && error != ENOENT) 3233 return (SET_ERROR(EINVAL)); 3234 3235 if (error != 0) 3236 volblocksize = zfs_prop_default_numeric( 3237 ZFS_PROP_VOLBLOCKSIZE); 3238 3239 if ((error = zvol_check_volblocksize( 3240 volblocksize)) != 0 || 3241 (error = zvol_check_volsize(volsize, 3242 volblocksize)) != 0) 3243 return (error); 3244 } else if (type == DMU_OST_ZFS) { 3245 int error; 3246 3247 /* 3248 * We have to have normalization and 3249 * case-folding flags correct when we do the 3250 * file system creation, so go figure them out 3251 * now. 3252 */ 3253 VERIFY(nvlist_alloc(&zct.zct_zplprops, 3254 NV_UNIQUE_NAME, KM_SLEEP) == 0); 3255 error = zfs_fill_zplprops(fsname, nvprops, 3256 zct.zct_zplprops, &is_insensitive); 3257 if (error != 0) { 3258 nvlist_free(zct.zct_zplprops); 3259 return (error); 3260 } 3261 } 3262 3263 error = dmu_objset_create(fsname, type, 3264 is_insensitive ? DS_FLAG_CI_DATASET : 0, cbfunc, &zct); 3265 nvlist_free(zct.zct_zplprops); 3266 3267 /* 3268 * It would be nice to do this atomically. 3269 */ 3270 if (error == 0) { 3271 error = zfs_set_prop_nvlist(fsname, ZPROP_SRC_LOCAL, 3272 nvprops, outnvl); 3273 if (error != 0) 3274 (void) dsl_destroy_head(fsname); 3275 } 3276 return (error); 3277 } 3278 3279 /* 3280 * innvl: { 3281 * "origin" -> name of origin snapshot 3282 * (optional) "props" -> { prop -> value } 3283 * } 3284 * 3285 * outnvl: propname -> error code (int32) 3286 */ 3287 static int 3288 zfs_ioc_clone(const char *fsname, nvlist_t *innvl, nvlist_t *outnvl) 3289 { 3290 int error = 0; 3291 nvlist_t *nvprops = NULL; 3292 char *origin_name; 3293 3294 if (nvlist_lookup_string(innvl, "origin", &origin_name) != 0) 3295 return (SET_ERROR(EINVAL)); 3296 (void) nvlist_lookup_nvlist(innvl, "props", &nvprops); 3297 3298 if (strchr(fsname, '@') || 3299 strchr(fsname, '%')) 3300 return (SET_ERROR(EINVAL)); 3301 3302 if (dataset_namecheck(origin_name, NULL, NULL) != 0) 3303 return (SET_ERROR(EINVAL)); 3304 error = dmu_objset_clone(fsname, origin_name); 3305 if (error != 0) 3306 return (error); 3307 3308 /* 3309 * It would be nice to do this atomically. 3310 */ 3311 if (error == 0) { 3312 error = zfs_set_prop_nvlist(fsname, ZPROP_SRC_LOCAL, 3313 nvprops, outnvl); 3314 if (error != 0) 3315 (void) dsl_destroy_head(fsname); 3316 } 3317 return (error); 3318 } 3319 3320 /* ARGSUSED */ 3321 static int 3322 zfs_ioc_remap(const char *fsname, nvlist_t *innvl, nvlist_t *outnvl) 3323 { 3324 if (strchr(fsname, '@') || 3325 strchr(fsname, '%')) 3326 return (SET_ERROR(EINVAL)); 3327 3328 return (dmu_objset_remap_indirects(fsname)); 3329 } 3330 3331 /* 3332 * innvl: { 3333 * "snaps" -> { snapshot1, snapshot2 } 3334 * (optional) "props" -> { prop -> value (string) } 3335 * } 3336 * 3337 * outnvl: snapshot -> error code (int32) 3338 */ 3339 static int 3340 zfs_ioc_snapshot(const char *poolname, nvlist_t *innvl, nvlist_t *outnvl) 3341 { 3342 nvlist_t *snaps; 3343 nvlist_t *props = NULL; 3344 int error, poollen; 3345 nvpair_t *pair; 3346 3347 (void) nvlist_lookup_nvlist(innvl, "props", &props); 3348 if ((error = zfs_check_userprops(poolname, props)) != 0) 3349 return (error); 3350 3351 if (!nvlist_empty(props) && 3352 zfs_earlier_version(poolname, SPA_VERSION_SNAP_PROPS)) 3353 return (SET_ERROR(ENOTSUP)); 3354 3355 if (nvlist_lookup_nvlist(innvl, "snaps", &snaps) != 0) 3356 return (SET_ERROR(EINVAL)); 3357 poollen = strlen(poolname); 3358 for (pair = nvlist_next_nvpair(snaps, NULL); pair != NULL; 3359 pair = nvlist_next_nvpair(snaps, pair)) { 3360 const char *name = nvpair_name(pair); 3361 const char *cp = strchr(name, '@'); 3362 3363 /* 3364 * The snap name must contain an @, and the part after it must 3365 * contain only valid characters. 3366 */ 3367 if (cp == NULL || 3368 zfs_component_namecheck(cp + 1, NULL, NULL) != 0) 3369 return (SET_ERROR(EINVAL)); 3370 3371 /* 3372 * The snap must be in the specified pool. 3373 */ 3374 if (strncmp(name, poolname, poollen) != 0 || 3375 (name[poollen] != '/' && name[poollen] != '@')) 3376 return (SET_ERROR(EXDEV)); 3377 3378 /* This must be the only snap of this fs. */ 3379 for (nvpair_t *pair2 = nvlist_next_nvpair(snaps, pair); 3380 pair2 != NULL; pair2 = nvlist_next_nvpair(snaps, pair2)) { 3381 if (strncmp(name, nvpair_name(pair2), cp - name + 1) 3382 == 0) { 3383 return (SET_ERROR(EXDEV)); 3384 } 3385 } 3386 } 3387 3388 error = dsl_dataset_snapshot(snaps, props, outnvl); 3389 return (error); 3390 } 3391 3392 /* 3393 * innvl: "message" -> string 3394 */ 3395 /* ARGSUSED */ 3396 static int 3397 zfs_ioc_log_history(const char *unused, nvlist_t *innvl, nvlist_t *outnvl) 3398 { 3399 char *message; 3400 spa_t *spa; 3401 int error; 3402 char *poolname; 3403 3404 /* 3405 * The poolname in the ioctl is not set, we get it from the TSD, 3406 * which was set at the end of the last successful ioctl that allows 3407 * logging. The secpolicy func already checked that it is set. 3408 * Only one log ioctl is allowed after each successful ioctl, so 3409 * we clear the TSD here. 3410 */ 3411 poolname = tsd_get(zfs_allow_log_key); 3412 (void) tsd_set(zfs_allow_log_key, NULL); 3413 error = spa_open(poolname, &spa, FTAG); 3414 strfree(poolname); 3415 if (error != 0) 3416 return (error); 3417 3418 if (nvlist_lookup_string(innvl, "message", &message) != 0) { 3419 spa_close(spa, FTAG); 3420 return (SET_ERROR(EINVAL)); 3421 } 3422 3423 if (spa_version(spa) < SPA_VERSION_ZPOOL_HISTORY) { 3424 spa_close(spa, FTAG); 3425 return (SET_ERROR(ENOTSUP)); 3426 } 3427 3428 error = spa_history_log(spa, message); 3429 spa_close(spa, FTAG); 3430 return (error); 3431 } 3432 3433 /* 3434 * The dp_config_rwlock must not be held when calling this, because the 3435 * unmount may need to write out data. 3436 * 3437 * This function is best-effort. Callers must deal gracefully if it 3438 * remains mounted (or is remounted after this call). 3439 * 3440 * Returns 0 if the argument is not a snapshot, or it is not currently a 3441 * filesystem, or we were able to unmount it. Returns error code otherwise. 3442 */ 3443 void 3444 zfs_unmount_snap(const char *snapname) 3445 { 3446 vfs_t *vfsp = NULL; 3447 zfsvfs_t *zfsvfs = NULL; 3448 3449 if (strchr(snapname, '@') == NULL) 3450 return; 3451 3452 int err = getzfsvfs(snapname, &zfsvfs); 3453 if (err != 0) { 3454 ASSERT3P(zfsvfs, ==, NULL); 3455 return; 3456 } 3457 vfsp = zfsvfs->z_vfs; 3458 3459 ASSERT(!dsl_pool_config_held(dmu_objset_pool(zfsvfs->z_os))); 3460 3461 err = vn_vfswlock(vfsp->vfs_vnodecovered); 3462 VFS_RELE(vfsp); 3463 if (err != 0) 3464 return; 3465 3466 /* 3467 * Always force the unmount for snapshots. 3468 */ 3469 (void) dounmount(vfsp, MS_FORCE, kcred); 3470 } 3471 3472 /* ARGSUSED */ 3473 static int 3474 zfs_unmount_snap_cb(const char *snapname, void *arg) 3475 { 3476 zfs_unmount_snap(snapname); 3477 return (0); 3478 } 3479 3480 /* 3481 * When a clone is destroyed, its origin may also need to be destroyed, 3482 * in which case it must be unmounted. This routine will do that unmount 3483 * if necessary. 3484 */ 3485 void 3486 zfs_destroy_unmount_origin(const char *fsname) 3487 { 3488 int error; 3489 objset_t *os; 3490 dsl_dataset_t *ds; 3491 3492 error = dmu_objset_hold(fsname, FTAG, &os); 3493 if (error != 0) 3494 return; 3495 ds = dmu_objset_ds(os); 3496 if (dsl_dir_is_clone(ds->ds_dir) && DS_IS_DEFER_DESTROY(ds->ds_prev)) { 3497 char originname[ZFS_MAX_DATASET_NAME_LEN]; 3498 dsl_dataset_name(ds->ds_prev, originname); 3499 dmu_objset_rele(os, FTAG); 3500 zfs_unmount_snap(originname); 3501 } else { 3502 dmu_objset_rele(os, FTAG); 3503 } 3504 } 3505 3506 /* 3507 * innvl: { 3508 * "snaps" -> { snapshot1, snapshot2 } 3509 * (optional boolean) "defer" 3510 * } 3511 * 3512 * outnvl: snapshot -> error code (int32) 3513 * 3514 */ 3515 /* ARGSUSED */ 3516 static int 3517 zfs_ioc_destroy_snaps(const char *poolname, nvlist_t *innvl, nvlist_t *outnvl) 3518 { 3519 nvlist_t *snaps; 3520 nvpair_t *pair; 3521 boolean_t defer; 3522 3523 if (nvlist_lookup_nvlist(innvl, "snaps", &snaps) != 0) 3524 return (SET_ERROR(EINVAL)); 3525 defer = nvlist_exists(innvl, "defer"); 3526 3527 for (pair = nvlist_next_nvpair(snaps, NULL); pair != NULL; 3528 pair = nvlist_next_nvpair(snaps, pair)) { 3529 zfs_unmount_snap(nvpair_name(pair)); 3530 } 3531 3532 return (dsl_destroy_snapshots_nvl(snaps, defer, outnvl)); 3533 } 3534 3535 /* 3536 * Create bookmarks. Bookmark names are of the form <fs>#<bmark>. 3537 * All bookmarks must be in the same pool. 3538 * 3539 * innvl: { 3540 * bookmark1 -> snapshot1, bookmark2 -> snapshot2 3541 * } 3542 * 3543 * outnvl: bookmark -> error code (int32) 3544 * 3545 */ 3546 /* ARGSUSED */ 3547 static int 3548 zfs_ioc_bookmark(const char *poolname, nvlist_t *innvl, nvlist_t *outnvl) 3549 { 3550 for (nvpair_t *pair = nvlist_next_nvpair(innvl, NULL); 3551 pair != NULL; pair = nvlist_next_nvpair(innvl, pair)) { 3552 char *snap_name; 3553 3554 /* 3555 * Verify the snapshot argument. 3556 */ 3557 if (nvpair_value_string(pair, &snap_name) != 0) 3558 return (SET_ERROR(EINVAL)); 3559 3560 3561 /* Verify that the keys (bookmarks) are unique */ 3562 for (nvpair_t *pair2 = nvlist_next_nvpair(innvl, pair); 3563 pair2 != NULL; pair2 = nvlist_next_nvpair(innvl, pair2)) { 3564 if (strcmp(nvpair_name(pair), nvpair_name(pair2)) == 0) 3565 return (SET_ERROR(EINVAL)); 3566 } 3567 } 3568 3569 return (dsl_bookmark_create(innvl, outnvl)); 3570 } 3571 3572 /* 3573 * innvl: { 3574 * property 1, property 2, ... 3575 * } 3576 * 3577 * outnvl: { 3578 * bookmark name 1 -> { property 1, property 2, ... }, 3579 * bookmark name 2 -> { property 1, property 2, ... } 3580 * } 3581 * 3582 */ 3583 static int 3584 zfs_ioc_get_bookmarks(const char *fsname, nvlist_t *innvl, nvlist_t *outnvl) 3585 { 3586 return (dsl_get_bookmarks(fsname, innvl, outnvl)); 3587 } 3588 3589 /* 3590 * innvl: { 3591 * bookmark name 1, bookmark name 2 3592 * } 3593 * 3594 * outnvl: bookmark -> error code (int32) 3595 * 3596 */ 3597 static int 3598 zfs_ioc_destroy_bookmarks(const char *poolname, nvlist_t *innvl, 3599 nvlist_t *outnvl) 3600 { 3601 int error, poollen; 3602 3603 poollen = strlen(poolname); 3604 for (nvpair_t *pair = nvlist_next_nvpair(innvl, NULL); 3605 pair != NULL; pair = nvlist_next_nvpair(innvl, pair)) { 3606 const char *name = nvpair_name(pair); 3607 const char *cp = strchr(name, '#'); 3608 3609 /* 3610 * The bookmark name must contain an #, and the part after it 3611 * must contain only valid characters. 3612 */ 3613 if (cp == NULL || 3614 zfs_component_namecheck(cp + 1, NULL, NULL) != 0) 3615 return (SET_ERROR(EINVAL)); 3616 3617 /* 3618 * The bookmark must be in the specified pool. 3619 */ 3620 if (strncmp(name, poolname, poollen) != 0 || 3621 (name[poollen] != '/' && name[poollen] != '#')) 3622 return (SET_ERROR(EXDEV)); 3623 } 3624 3625 error = dsl_bookmark_destroy(innvl, outnvl); 3626 return (error); 3627 } 3628 3629 static int 3630 zfs_ioc_channel_program(const char *poolname, nvlist_t *innvl, 3631 nvlist_t *outnvl) 3632 { 3633 char *program; 3634 uint64_t instrlimit, memlimit; 3635 boolean_t sync_flag; 3636 nvpair_t *nvarg = NULL; 3637 3638 if (0 != nvlist_lookup_string(innvl, ZCP_ARG_PROGRAM, &program)) { 3639 return (EINVAL); 3640 } 3641 if (0 != nvlist_lookup_boolean_value(innvl, ZCP_ARG_SYNC, &sync_flag)) { 3642 sync_flag = B_TRUE; 3643 } 3644 if (0 != nvlist_lookup_uint64(innvl, ZCP_ARG_INSTRLIMIT, &instrlimit)) { 3645 instrlimit = ZCP_DEFAULT_INSTRLIMIT; 3646 } 3647 if (0 != nvlist_lookup_uint64(innvl, ZCP_ARG_MEMLIMIT, &memlimit)) { 3648 memlimit = ZCP_DEFAULT_MEMLIMIT; 3649 } 3650 if (0 != nvlist_lookup_nvpair(innvl, ZCP_ARG_ARGLIST, &nvarg)) { 3651 return (EINVAL); 3652 } 3653 3654 if (instrlimit == 0 || instrlimit > zfs_lua_max_instrlimit) 3655 return (EINVAL); 3656 if (memlimit == 0 || memlimit > zfs_lua_max_memlimit) 3657 return (EINVAL); 3658 3659 return (zcp_eval(poolname, program, sync_flag, instrlimit, memlimit, 3660 nvarg, outnvl)); 3661 } 3662 3663 /* 3664 * innvl: unused 3665 * outnvl: empty 3666 */ 3667 /* ARGSUSED */ 3668 static int 3669 zfs_ioc_pool_checkpoint(const char *poolname, nvlist_t *innvl, nvlist_t *outnvl) 3670 { 3671 return (spa_checkpoint(poolname)); 3672 } 3673 3674 /* 3675 * innvl: unused 3676 * outnvl: empty 3677 */ 3678 /* ARGSUSED */ 3679 static int 3680 zfs_ioc_pool_discard_checkpoint(const char *poolname, nvlist_t *innvl, 3681 nvlist_t *outnvl) 3682 { 3683 return (spa_checkpoint_discard(poolname)); 3684 } 3685 3686 /* 3687 * inputs: 3688 * zc_name name of dataset to destroy 3689 * zc_objset_type type of objset 3690 * zc_defer_destroy mark for deferred destroy 3691 * 3692 * outputs: none 3693 */ 3694 static int 3695 zfs_ioc_destroy(zfs_cmd_t *zc) 3696 { 3697 int err; 3698 3699 if (zc->zc_objset_type == DMU_OST_ZFS) 3700 zfs_unmount_snap(zc->zc_name); 3701 3702 if (strchr(zc->zc_name, '@')) 3703 err = dsl_destroy_snapshot(zc->zc_name, zc->zc_defer_destroy); 3704 else 3705 err = dsl_destroy_head(zc->zc_name); 3706 if (zc->zc_objset_type == DMU_OST_ZVOL && err == 0) 3707 (void) zvol_remove_minor(zc->zc_name); 3708 return (err); 3709 } 3710 3711 /* 3712 * innvl: { 3713 * vdevs: { 3714 * guid 1, guid 2, ... 3715 * }, 3716 * func: POOL_INITIALIZE_{CANCEL|DO|SUSPEND} 3717 * } 3718 * 3719 * outnvl: { 3720 * [func: EINVAL (if provided command type didn't make sense)], 3721 * [vdevs: { 3722 * guid1: errno, (see function body for possible errnos) 3723 * ... 3724 * }] 3725 * } 3726 * 3727 */ 3728 static int 3729 zfs_ioc_pool_initialize(const char *poolname, nvlist_t *innvl, nvlist_t *outnvl) 3730 { 3731 spa_t *spa; 3732 int error; 3733 3734 error = spa_open(poolname, &spa, FTAG); 3735 if (error != 0) 3736 return (error); 3737 3738 uint64_t cmd_type; 3739 if (nvlist_lookup_uint64(innvl, ZPOOL_INITIALIZE_COMMAND, 3740 &cmd_type) != 0) { 3741 spa_close(spa, FTAG); 3742 return (SET_ERROR(EINVAL)); 3743 } 3744 if (!(cmd_type == POOL_INITIALIZE_CANCEL || 3745 cmd_type == POOL_INITIALIZE_DO || 3746 cmd_type == POOL_INITIALIZE_SUSPEND)) { 3747 spa_close(spa, FTAG); 3748 return (SET_ERROR(EINVAL)); 3749 } 3750 3751 nvlist_t *vdev_guids; 3752 if (nvlist_lookup_nvlist(innvl, ZPOOL_INITIALIZE_VDEVS, 3753 &vdev_guids) != 0) { 3754 spa_close(spa, FTAG); 3755 return (SET_ERROR(EINVAL)); 3756 } 3757 3758 nvlist_t *vdev_errlist = fnvlist_alloc(); 3759 int total_errors = 0; 3760 3761 for (nvpair_t *pair = nvlist_next_nvpair(vdev_guids, NULL); 3762 pair != NULL; pair = nvlist_next_nvpair(vdev_guids, pair)) { 3763 uint64_t vdev_guid = fnvpair_value_uint64(pair); 3764 3765 error = spa_vdev_initialize(spa, vdev_guid, cmd_type); 3766 if (error != 0) { 3767 char guid_as_str[MAXNAMELEN]; 3768 3769 (void) snprintf(guid_as_str, sizeof (guid_as_str), 3770 "%llu", (unsigned long long)vdev_guid); 3771 fnvlist_add_int64(vdev_errlist, guid_as_str, error); 3772 total_errors++; 3773 } 3774 } 3775 if (fnvlist_size(vdev_errlist) > 0) { 3776 fnvlist_add_nvlist(outnvl, ZPOOL_INITIALIZE_VDEVS, 3777 vdev_errlist); 3778 } 3779 fnvlist_free(vdev_errlist); 3780 3781 spa_close(spa, FTAG); 3782 return (total_errors > 0 ? EINVAL : 0); 3783 } 3784 3785 /* 3786 * fsname is name of dataset to rollback (to most recent snapshot) 3787 * 3788 * innvl may contain name of expected target snapshot 3789 * 3790 * outnvl: "target" -> name of most recent snapshot 3791 * } 3792 */ 3793 /* ARGSUSED */ 3794 static int 3795 zfs_ioc_rollback(const char *fsname, nvlist_t *innvl, nvlist_t *outnvl) 3796 { 3797 zfsvfs_t *zfsvfs; 3798 char *target = NULL; 3799 int error; 3800 3801 (void) nvlist_lookup_string(innvl, "target", &target); 3802 if (target != NULL) { 3803 const char *cp = strchr(target, '@'); 3804 3805 /* 3806 * The snap name must contain an @, and the part after it must 3807 * contain only valid characters. 3808 */ 3809 if (cp == NULL || 3810 zfs_component_namecheck(cp + 1, NULL, NULL) != 0) 3811 return (SET_ERROR(EINVAL)); 3812 } 3813 3814 if (getzfsvfs(fsname, &zfsvfs) == 0) { 3815 dsl_dataset_t *ds; 3816 3817 ds = dmu_objset_ds(zfsvfs->z_os); 3818 error = zfs_suspend_fs(zfsvfs); 3819 if (error == 0) { 3820 int resume_err; 3821 3822 error = dsl_dataset_rollback(fsname, target, zfsvfs, 3823 outnvl); 3824 resume_err = zfs_resume_fs(zfsvfs, ds); 3825 error = error ? error : resume_err; 3826 } 3827 VFS_RELE(zfsvfs->z_vfs); 3828 } else { 3829 error = dsl_dataset_rollback(fsname, target, NULL, outnvl); 3830 } 3831 return (error); 3832 } 3833 3834 static int 3835 recursive_unmount(const char *fsname, void *arg) 3836 { 3837 const char *snapname = arg; 3838 char fullname[ZFS_MAX_DATASET_NAME_LEN]; 3839 3840 (void) snprintf(fullname, sizeof (fullname), "%s@%s", fsname, snapname); 3841 zfs_unmount_snap(fullname); 3842 3843 return (0); 3844 } 3845 3846 /* 3847 * inputs: 3848 * zc_name old name of dataset 3849 * zc_value new name of dataset 3850 * zc_cookie recursive flag (only valid for snapshots) 3851 * 3852 * outputs: none 3853 */ 3854 static int 3855 zfs_ioc_rename(zfs_cmd_t *zc) 3856 { 3857 boolean_t recursive = zc->zc_cookie & 1; 3858 char *at; 3859 3860 /* "zfs rename" from and to ...%recv datasets should both fail */ 3861 zc->zc_name[sizeof (zc->zc_name) - 1] = '\0'; 3862 zc->zc_value[sizeof (zc->zc_value) - 1] = '\0'; 3863 if (dataset_namecheck(zc->zc_name, NULL, NULL) != 0 || 3864 dataset_namecheck(zc->zc_value, NULL, NULL) != 0 || 3865 strchr(zc->zc_name, '%') || strchr(zc->zc_value, '%')) 3866 return (SET_ERROR(EINVAL)); 3867 3868 at = strchr(zc->zc_name, '@'); 3869 if (at != NULL) { 3870 /* snaps must be in same fs */ 3871 int error; 3872 3873 if (strncmp(zc->zc_name, zc->zc_value, at - zc->zc_name + 1)) 3874 return (SET_ERROR(EXDEV)); 3875 *at = '\0'; 3876 if (zc->zc_objset_type == DMU_OST_ZFS) { 3877 error = dmu_objset_find(zc->zc_name, 3878 recursive_unmount, at + 1, 3879 recursive ? DS_FIND_CHILDREN : 0); 3880 if (error != 0) { 3881 *at = '@'; 3882 return (error); 3883 } 3884 } 3885 error = dsl_dataset_rename_snapshot(zc->zc_name, 3886 at + 1, strchr(zc->zc_value, '@') + 1, recursive); 3887 *at = '@'; 3888 3889 return (error); 3890 } else { 3891 if (zc->zc_objset_type == DMU_OST_ZVOL) 3892 (void) zvol_remove_minor(zc->zc_name); 3893 return (dsl_dir_rename(zc->zc_name, zc->zc_value)); 3894 } 3895 } 3896 3897 static int 3898 zfs_check_settable(const char *dsname, nvpair_t *pair, cred_t *cr) 3899 { 3900 const char *propname = nvpair_name(pair); 3901 boolean_t issnap = (strchr(dsname, '@') != NULL); 3902 zfs_prop_t prop = zfs_name_to_prop(propname); 3903 uint64_t intval; 3904 int err; 3905 3906 if (prop == ZPROP_INVAL) { 3907 if (zfs_prop_user(propname)) { 3908 if (err = zfs_secpolicy_write_perms(dsname, 3909 ZFS_DELEG_PERM_USERPROP, cr)) 3910 return (err); 3911 return (0); 3912 } 3913 3914 if (!issnap && zfs_prop_userquota(propname)) { 3915 const char *perm = NULL; 3916 const char *uq_prefix = 3917 zfs_userquota_prop_prefixes[ZFS_PROP_USERQUOTA]; 3918 const char *gq_prefix = 3919 zfs_userquota_prop_prefixes[ZFS_PROP_GROUPQUOTA]; 3920 3921 if (strncmp(propname, uq_prefix, 3922 strlen(uq_prefix)) == 0) { 3923 perm = ZFS_DELEG_PERM_USERQUOTA; 3924 } else if (strncmp(propname, gq_prefix, 3925 strlen(gq_prefix)) == 0) { 3926 perm = ZFS_DELEG_PERM_GROUPQUOTA; 3927 } else { 3928 /* USERUSED and GROUPUSED are read-only */ 3929 return (SET_ERROR(EINVAL)); 3930 } 3931 3932 if (err = zfs_secpolicy_write_perms(dsname, perm, cr)) 3933 return (err); 3934 return (0); 3935 } 3936 3937 return (SET_ERROR(EINVAL)); 3938 } 3939 3940 if (issnap) 3941 return (SET_ERROR(EINVAL)); 3942 3943 if (nvpair_type(pair) == DATA_TYPE_NVLIST) { 3944 /* 3945 * dsl_prop_get_all_impl() returns properties in this 3946 * format. 3947 */ 3948 nvlist_t *attrs; 3949 VERIFY(nvpair_value_nvlist(pair, &attrs) == 0); 3950 VERIFY(nvlist_lookup_nvpair(attrs, ZPROP_VALUE, 3951 &pair) == 0); 3952 } 3953 3954 /* 3955 * Check that this value is valid for this pool version 3956 */ 3957 switch (prop) { 3958 case ZFS_PROP_COMPRESSION: 3959 /* 3960 * If the user specified gzip compression, make sure 3961 * the SPA supports it. We ignore any errors here since 3962 * we'll catch them later. 3963 */ 3964 if (nvpair_value_uint64(pair, &intval) == 0) { 3965 if (intval >= ZIO_COMPRESS_GZIP_1 && 3966 intval <= ZIO_COMPRESS_GZIP_9 && 3967 zfs_earlier_version(dsname, 3968 SPA_VERSION_GZIP_COMPRESSION)) { 3969 return (SET_ERROR(ENOTSUP)); 3970 } 3971 3972 if (intval == ZIO_COMPRESS_ZLE && 3973 zfs_earlier_version(dsname, 3974 SPA_VERSION_ZLE_COMPRESSION)) 3975 return (SET_ERROR(ENOTSUP)); 3976 3977 if (intval == ZIO_COMPRESS_LZ4) { 3978 spa_t *spa; 3979 3980 if ((err = spa_open(dsname, &spa, FTAG)) != 0) 3981 return (err); 3982 3983 if (!spa_feature_is_enabled(spa, 3984 SPA_FEATURE_LZ4_COMPRESS)) { 3985 spa_close(spa, FTAG); 3986 return (SET_ERROR(ENOTSUP)); 3987 } 3988 spa_close(spa, FTAG); 3989 } 3990 3991 /* 3992 * If this is a bootable dataset then 3993 * verify that the compression algorithm 3994 * is supported for booting. We must return 3995 * something other than ENOTSUP since it 3996 * implies a downrev pool version. 3997 */ 3998 if (zfs_is_bootfs(dsname) && 3999 !BOOTFS_COMPRESS_VALID(intval)) { 4000 return (SET_ERROR(ERANGE)); 4001 } 4002 } 4003 break; 4004 4005 case ZFS_PROP_COPIES: 4006 if (zfs_earlier_version(dsname, SPA_VERSION_DITTO_BLOCKS)) 4007 return (SET_ERROR(ENOTSUP)); 4008 break; 4009 4010 case ZFS_PROP_RECORDSIZE: 4011 /* Record sizes above 128k need the feature to be enabled */ 4012 if (nvpair_value_uint64(pair, &intval) == 0 && 4013 intval > SPA_OLD_MAXBLOCKSIZE) { 4014 spa_t *spa; 4015 4016 /* 4017 * We don't allow setting the property above 1MB, 4018 * unless the tunable has been changed. 4019 */ 4020 if (intval > zfs_max_recordsize || 4021 intval > SPA_MAXBLOCKSIZE) 4022 return (SET_ERROR(ERANGE)); 4023 4024 if ((err = spa_open(dsname, &spa, FTAG)) != 0) 4025 return (err); 4026 4027 if (!spa_feature_is_enabled(spa, 4028 SPA_FEATURE_LARGE_BLOCKS)) { 4029 spa_close(spa, FTAG); 4030 return (SET_ERROR(ENOTSUP)); 4031 } 4032 spa_close(spa, FTAG); 4033 } 4034 break; 4035 4036 case ZFS_PROP_SHARESMB: 4037 if (zpl_earlier_version(dsname, ZPL_VERSION_FUID)) 4038 return (SET_ERROR(ENOTSUP)); 4039 break; 4040 4041 case ZFS_PROP_ACLINHERIT: 4042 if (nvpair_type(pair) == DATA_TYPE_UINT64 && 4043 nvpair_value_uint64(pair, &intval) == 0) { 4044 if (intval == ZFS_ACL_PASSTHROUGH_X && 4045 zfs_earlier_version(dsname, 4046 SPA_VERSION_PASSTHROUGH_X)) 4047 return (SET_ERROR(ENOTSUP)); 4048 } 4049 break; 4050 4051 case ZFS_PROP_CHECKSUM: 4052 case ZFS_PROP_DEDUP: 4053 { 4054 spa_feature_t feature; 4055 spa_t *spa; 4056 4057 /* dedup feature version checks */ 4058 if (prop == ZFS_PROP_DEDUP && 4059 zfs_earlier_version(dsname, SPA_VERSION_DEDUP)) 4060 return (SET_ERROR(ENOTSUP)); 4061 4062 if (nvpair_value_uint64(pair, &intval) != 0) 4063 return (SET_ERROR(EINVAL)); 4064 4065 /* check prop value is enabled in features */ 4066 feature = zio_checksum_to_feature(intval & ZIO_CHECKSUM_MASK); 4067 if (feature == SPA_FEATURE_NONE) 4068 break; 4069 4070 if ((err = spa_open(dsname, &spa, FTAG)) != 0) 4071 return (err); 4072 /* 4073 * Salted checksums are not supported on root pools. 4074 */ 4075 if (spa_bootfs(spa) != 0 && 4076 intval < ZIO_CHECKSUM_FUNCTIONS && 4077 (zio_checksum_table[intval].ci_flags & 4078 ZCHECKSUM_FLAG_SALTED)) { 4079 spa_close(spa, FTAG); 4080 return (SET_ERROR(ERANGE)); 4081 } 4082 if (!spa_feature_is_enabled(spa, feature)) { 4083 spa_close(spa, FTAG); 4084 return (SET_ERROR(ENOTSUP)); 4085 } 4086 spa_close(spa, FTAG); 4087 break; 4088 } 4089 } 4090 4091 return (zfs_secpolicy_setprop(dsname, prop, pair, CRED())); 4092 } 4093 4094 /* 4095 * Checks for a race condition to make sure we don't increment a feature flag 4096 * multiple times. 4097 */ 4098 static int 4099 zfs_prop_activate_feature_check(void *arg, dmu_tx_t *tx) 4100 { 4101 spa_t *spa = dmu_tx_pool(tx)->dp_spa; 4102 spa_feature_t *featurep = arg; 4103 4104 if (!spa_feature_is_active(spa, *featurep)) 4105 return (0); 4106 else 4107 return (SET_ERROR(EBUSY)); 4108 } 4109 4110 /* 4111 * The callback invoked on feature activation in the sync task caused by 4112 * zfs_prop_activate_feature. 4113 */ 4114 static void 4115 zfs_prop_activate_feature_sync(void *arg, dmu_tx_t *tx) 4116 { 4117 spa_t *spa = dmu_tx_pool(tx)->dp_spa; 4118 spa_feature_t *featurep = arg; 4119 4120 spa_feature_incr(spa, *featurep, tx); 4121 } 4122 4123 /* 4124 * Activates a feature on a pool in response to a property setting. This 4125 * creates a new sync task which modifies the pool to reflect the feature 4126 * as being active. 4127 */ 4128 static int 4129 zfs_prop_activate_feature(spa_t *spa, spa_feature_t feature) 4130 { 4131 int err; 4132 4133 /* EBUSY here indicates that the feature is already active */ 4134 err = dsl_sync_task(spa_name(spa), 4135 zfs_prop_activate_feature_check, zfs_prop_activate_feature_sync, 4136 &feature, 2, ZFS_SPACE_CHECK_RESERVED); 4137 4138 if (err != 0 && err != EBUSY) 4139 return (err); 4140 else 4141 return (0); 4142 } 4143 4144 /* 4145 * Removes properties from the given props list that fail permission checks 4146 * needed to clear them and to restore them in case of a receive error. For each 4147 * property, make sure we have both set and inherit permissions. 4148 * 4149 * Returns the first error encountered if any permission checks fail. If the 4150 * caller provides a non-NULL errlist, it also gives the complete list of names 4151 * of all the properties that failed a permission check along with the 4152 * corresponding error numbers. The caller is responsible for freeing the 4153 * returned errlist. 4154 * 4155 * If every property checks out successfully, zero is returned and the list 4156 * pointed at by errlist is NULL. 4157 */ 4158 static int 4159 zfs_check_clearable(char *dataset, nvlist_t *props, nvlist_t **errlist) 4160 { 4161 zfs_cmd_t *zc; 4162 nvpair_t *pair, *next_pair; 4163 nvlist_t *errors; 4164 int err, rv = 0; 4165 4166 if (props == NULL) 4167 return (0); 4168 4169 VERIFY(nvlist_alloc(&errors, NV_UNIQUE_NAME, KM_SLEEP) == 0); 4170 4171 zc = kmem_alloc(sizeof (zfs_cmd_t), KM_SLEEP); 4172 (void) strcpy(zc->zc_name, dataset); 4173 pair = nvlist_next_nvpair(props, NULL); 4174 while (pair != NULL) { 4175 next_pair = nvlist_next_nvpair(props, pair); 4176 4177 (void) strcpy(zc->zc_value, nvpair_name(pair)); 4178 if ((err = zfs_check_settable(dataset, pair, CRED())) != 0 || 4179 (err = zfs_secpolicy_inherit_prop(zc, NULL, CRED())) != 0) { 4180 VERIFY(nvlist_remove_nvpair(props, pair) == 0); 4181 VERIFY(nvlist_add_int32(errors, 4182 zc->zc_value, err) == 0); 4183 } 4184 pair = next_pair; 4185 } 4186 kmem_free(zc, sizeof (zfs_cmd_t)); 4187 4188 if ((pair = nvlist_next_nvpair(errors, NULL)) == NULL) { 4189 nvlist_free(errors); 4190 errors = NULL; 4191 } else { 4192 VERIFY(nvpair_value_int32(pair, &rv) == 0); 4193 } 4194 4195 if (errlist == NULL) 4196 nvlist_free(errors); 4197 else 4198 *errlist = errors; 4199 4200 return (rv); 4201 } 4202 4203 static boolean_t 4204 propval_equals(nvpair_t *p1, nvpair_t *p2) 4205 { 4206 if (nvpair_type(p1) == DATA_TYPE_NVLIST) { 4207 /* dsl_prop_get_all_impl() format */ 4208 nvlist_t *attrs; 4209 VERIFY(nvpair_value_nvlist(p1, &attrs) == 0); 4210 VERIFY(nvlist_lookup_nvpair(attrs, ZPROP_VALUE, 4211 &p1) == 0); 4212 } 4213 4214 if (nvpair_type(p2) == DATA_TYPE_NVLIST) { 4215 nvlist_t *attrs; 4216 VERIFY(nvpair_value_nvlist(p2, &attrs) == 0); 4217 VERIFY(nvlist_lookup_nvpair(attrs, ZPROP_VALUE, 4218 &p2) == 0); 4219 } 4220 4221 if (nvpair_type(p1) != nvpair_type(p2)) 4222 return (B_FALSE); 4223 4224 if (nvpair_type(p1) == DATA_TYPE_STRING) { 4225 char *valstr1, *valstr2; 4226 4227 VERIFY(nvpair_value_string(p1, (char **)&valstr1) == 0); 4228 VERIFY(nvpair_value_string(p2, (char **)&valstr2) == 0); 4229 return (strcmp(valstr1, valstr2) == 0); 4230 } else { 4231 uint64_t intval1, intval2; 4232 4233 VERIFY(nvpair_value_uint64(p1, &intval1) == 0); 4234 VERIFY(nvpair_value_uint64(p2, &intval2) == 0); 4235 return (intval1 == intval2); 4236 } 4237 } 4238 4239 /* 4240 * Remove properties from props if they are not going to change (as determined 4241 * by comparison with origprops). Remove them from origprops as well, since we 4242 * do not need to clear or restore properties that won't change. 4243 */ 4244 static void 4245 props_reduce(nvlist_t *props, nvlist_t *origprops) 4246 { 4247 nvpair_t *pair, *next_pair; 4248 4249 if (origprops == NULL) 4250 return; /* all props need to be received */ 4251 4252 pair = nvlist_next_nvpair(props, NULL); 4253 while (pair != NULL) { 4254 const char *propname = nvpair_name(pair); 4255 nvpair_t *match; 4256 4257 next_pair = nvlist_next_nvpair(props, pair); 4258 4259 if ((nvlist_lookup_nvpair(origprops, propname, 4260 &match) != 0) || !propval_equals(pair, match)) 4261 goto next; /* need to set received value */ 4262 4263 /* don't clear the existing received value */ 4264 (void) nvlist_remove_nvpair(origprops, match); 4265 /* don't bother receiving the property */ 4266 (void) nvlist_remove_nvpair(props, pair); 4267 next: 4268 pair = next_pair; 4269 } 4270 } 4271 4272 /* 4273 * Extract properties that cannot be set PRIOR to the receipt of a dataset. 4274 * For example, refquota cannot be set until after the receipt of a dataset, 4275 * because in replication streams, an older/earlier snapshot may exceed the 4276 * refquota. We want to receive the older/earlier snapshot, but setting 4277 * refquota pre-receipt will set the dsl's ACTUAL quota, which will prevent 4278 * the older/earlier snapshot from being received (with EDQUOT). 4279 * 4280 * The ZFS test "zfs_receive_011_pos" demonstrates such a scenario. 4281 * 4282 * libzfs will need to be judicious handling errors encountered by props 4283 * extracted by this function. 4284 */ 4285 static nvlist_t * 4286 extract_delay_props(nvlist_t *props) 4287 { 4288 nvlist_t *delayprops; 4289 nvpair_t *nvp, *tmp; 4290 static const zfs_prop_t delayable[] = { ZFS_PROP_REFQUOTA, 0 }; 4291 int i; 4292 4293 VERIFY(nvlist_alloc(&delayprops, NV_UNIQUE_NAME, KM_SLEEP) == 0); 4294 4295 for (nvp = nvlist_next_nvpair(props, NULL); nvp != NULL; 4296 nvp = nvlist_next_nvpair(props, nvp)) { 4297 /* 4298 * strcmp() is safe because zfs_prop_to_name() always returns 4299 * a bounded string. 4300 */ 4301 for (i = 0; delayable[i] != 0; i++) { 4302 if (strcmp(zfs_prop_to_name(delayable[i]), 4303 nvpair_name(nvp)) == 0) { 4304 break; 4305 } 4306 } 4307 if (delayable[i] != 0) { 4308 tmp = nvlist_prev_nvpair(props, nvp); 4309 VERIFY(nvlist_add_nvpair(delayprops, nvp) == 0); 4310 VERIFY(nvlist_remove_nvpair(props, nvp) == 0); 4311 nvp = tmp; 4312 } 4313 } 4314 4315 if (nvlist_empty(delayprops)) { 4316 nvlist_free(delayprops); 4317 delayprops = NULL; 4318 } 4319 return (delayprops); 4320 } 4321 4322 #ifdef DEBUG 4323 static boolean_t zfs_ioc_recv_inject_err; 4324 #endif 4325 4326 /* 4327 * inputs: 4328 * zc_name name of containing filesystem 4329 * zc_nvlist_src{_size} nvlist of properties to apply 4330 * zc_value name of snapshot to create 4331 * zc_string name of clone origin (if DRR_FLAG_CLONE) 4332 * zc_cookie file descriptor to recv from 4333 * zc_begin_record the BEGIN record of the stream (not byteswapped) 4334 * zc_guid force flag 4335 * zc_cleanup_fd cleanup-on-exit file descriptor 4336 * zc_action_handle handle for this guid/ds mapping (or zero on first call) 4337 * zc_resumable if data is incomplete assume sender will resume 4338 * 4339 * outputs: 4340 * zc_cookie number of bytes read 4341 * zc_nvlist_dst{_size} error for each unapplied received property 4342 * zc_obj zprop_errflags_t 4343 * zc_action_handle handle for this guid/ds mapping 4344 */ 4345 static int 4346 zfs_ioc_recv(zfs_cmd_t *zc) 4347 { 4348 file_t *fp; 4349 dmu_recv_cookie_t drc; 4350 boolean_t force = (boolean_t)zc->zc_guid; 4351 int fd; 4352 int error = 0; 4353 int props_error = 0; 4354 nvlist_t *errors; 4355 offset_t off; 4356 nvlist_t *props = NULL; /* sent properties */ 4357 nvlist_t *origprops = NULL; /* existing properties */ 4358 nvlist_t *delayprops = NULL; /* sent properties applied post-receive */ 4359 char *origin = NULL; 4360 char *tosnap; 4361 char tofs[ZFS_MAX_DATASET_NAME_LEN]; 4362 boolean_t first_recvd_props = B_FALSE; 4363 4364 if (dataset_namecheck(zc->zc_value, NULL, NULL) != 0 || 4365 strchr(zc->zc_value, '@') == NULL || 4366 strchr(zc->zc_value, '%')) 4367 return (SET_ERROR(EINVAL)); 4368 4369 (void) strcpy(tofs, zc->zc_value); 4370 tosnap = strchr(tofs, '@'); 4371 *tosnap++ = '\0'; 4372 4373 if (zc->zc_nvlist_src != NULL && 4374 (error = get_nvlist(zc->zc_nvlist_src, zc->zc_nvlist_src_size, 4375 zc->zc_iflags, &props)) != 0) 4376 return (error); 4377 4378 fd = zc->zc_cookie; 4379 fp = getf(fd); 4380 if (fp == NULL) { 4381 nvlist_free(props); 4382 return (SET_ERROR(EBADF)); 4383 } 4384 4385 errors = fnvlist_alloc(); 4386 4387 if (zc->zc_string[0]) 4388 origin = zc->zc_string; 4389 4390 error = dmu_recv_begin(tofs, tosnap, 4391 &zc->zc_begin_record, force, zc->zc_resumable, origin, &drc); 4392 if (error != 0) 4393 goto out; 4394 4395 /* 4396 * Set properties before we receive the stream so that they are applied 4397 * to the new data. Note that we must call dmu_recv_stream() if 4398 * dmu_recv_begin() succeeds. 4399 */ 4400 if (props != NULL && !drc.drc_newfs) { 4401 if (spa_version(dsl_dataset_get_spa(drc.drc_ds)) >= 4402 SPA_VERSION_RECVD_PROPS && 4403 !dsl_prop_get_hasrecvd(tofs)) 4404 first_recvd_props = B_TRUE; 4405 4406 /* 4407 * If new received properties are supplied, they are to 4408 * completely replace the existing received properties, so stash 4409 * away the existing ones. 4410 */ 4411 if (dsl_prop_get_received(tofs, &origprops) == 0) { 4412 nvlist_t *errlist = NULL; 4413 /* 4414 * Don't bother writing a property if its value won't 4415 * change (and avoid the unnecessary security checks). 4416 * 4417 * The first receive after SPA_VERSION_RECVD_PROPS is a 4418 * special case where we blow away all local properties 4419 * regardless. 4420 */ 4421 if (!first_recvd_props) 4422 props_reduce(props, origprops); 4423 if (zfs_check_clearable(tofs, origprops, &errlist) != 0) 4424 (void) nvlist_merge(errors, errlist, 0); 4425 nvlist_free(errlist); 4426 4427 if (clear_received_props(tofs, origprops, 4428 first_recvd_props ? NULL : props) != 0) 4429 zc->zc_obj |= ZPROP_ERR_NOCLEAR; 4430 } else { 4431 zc->zc_obj |= ZPROP_ERR_NOCLEAR; 4432 } 4433 } 4434 4435 if (props != NULL) { 4436 props_error = dsl_prop_set_hasrecvd(tofs); 4437 4438 if (props_error == 0) { 4439 delayprops = extract_delay_props(props); 4440 (void) zfs_set_prop_nvlist(tofs, ZPROP_SRC_RECEIVED, 4441 props, errors); 4442 } 4443 } 4444 4445 off = fp->f_offset; 4446 error = dmu_recv_stream(&drc, fp->f_vnode, &off, zc->zc_cleanup_fd, 4447 &zc->zc_action_handle); 4448 4449 if (error == 0) { 4450 zfsvfs_t *zfsvfs = NULL; 4451 4452 if (getzfsvfs(tofs, &zfsvfs) == 0) { 4453 /* online recv */ 4454 dsl_dataset_t *ds; 4455 int end_err; 4456 4457 ds = dmu_objset_ds(zfsvfs->z_os); 4458 error = zfs_suspend_fs(zfsvfs); 4459 /* 4460 * If the suspend fails, then the recv_end will 4461 * likely also fail, and clean up after itself. 4462 */ 4463 end_err = dmu_recv_end(&drc, zfsvfs); 4464 if (error == 0) 4465 error = zfs_resume_fs(zfsvfs, ds); 4466 error = error ? error : end_err; 4467 VFS_RELE(zfsvfs->z_vfs); 4468 } else { 4469 error = dmu_recv_end(&drc, NULL); 4470 } 4471 4472 /* Set delayed properties now, after we're done receiving. */ 4473 if (delayprops != NULL && error == 0) { 4474 (void) zfs_set_prop_nvlist(tofs, ZPROP_SRC_RECEIVED, 4475 delayprops, errors); 4476 } 4477 } 4478 4479 if (delayprops != NULL) { 4480 /* 4481 * Merge delayed props back in with initial props, in case 4482 * we're DEBUG and zfs_ioc_recv_inject_err is set (which means 4483 * we have to make sure clear_received_props() includes 4484 * the delayed properties). 4485 * 4486 * Since zfs_ioc_recv_inject_err is only in DEBUG kernels, 4487 * using ASSERT() will be just like a VERIFY. 4488 */ 4489 ASSERT(nvlist_merge(props, delayprops, 0) == 0); 4490 nvlist_free(delayprops); 4491 } 4492 4493 /* 4494 * Now that all props, initial and delayed, are set, report the prop 4495 * errors to the caller. 4496 */ 4497 if (zc->zc_nvlist_dst_size != 0 && 4498 (nvlist_smush(errors, zc->zc_nvlist_dst_size) != 0 || 4499 put_nvlist(zc, errors) != 0)) { 4500 /* 4501 * Caller made zc->zc_nvlist_dst less than the minimum expected 4502 * size or supplied an invalid address. 4503 */ 4504 props_error = SET_ERROR(EINVAL); 4505 } 4506 4507 zc->zc_cookie = off - fp->f_offset; 4508 if (VOP_SEEK(fp->f_vnode, fp->f_offset, &off, NULL) == 0) 4509 fp->f_offset = off; 4510 4511 #ifdef DEBUG 4512 if (zfs_ioc_recv_inject_err) { 4513 zfs_ioc_recv_inject_err = B_FALSE; 4514 error = 1; 4515 } 4516 #endif 4517 /* 4518 * On error, restore the original props. 4519 */ 4520 if (error != 0 && props != NULL && !drc.drc_newfs) { 4521 if (clear_received_props(tofs, props, NULL) != 0) { 4522 /* 4523 * We failed to clear the received properties. 4524 * Since we may have left a $recvd value on the 4525 * system, we can't clear the $hasrecvd flag. 4526 */ 4527 zc->zc_obj |= ZPROP_ERR_NORESTORE; 4528 } else if (first_recvd_props) { 4529 dsl_prop_unset_hasrecvd(tofs); 4530 } 4531 4532 if (origprops == NULL && !drc.drc_newfs) { 4533 /* We failed to stash the original properties. */ 4534 zc->zc_obj |= ZPROP_ERR_NORESTORE; 4535 } 4536 4537 /* 4538 * dsl_props_set() will not convert RECEIVED to LOCAL on or 4539 * after SPA_VERSION_RECVD_PROPS, so we need to specify LOCAL 4540 * explictly if we're restoring local properties cleared in the 4541 * first new-style receive. 4542 */ 4543 if (origprops != NULL && 4544 zfs_set_prop_nvlist(tofs, (first_recvd_props ? 4545 ZPROP_SRC_LOCAL : ZPROP_SRC_RECEIVED), 4546 origprops, NULL) != 0) { 4547 /* 4548 * We stashed the original properties but failed to 4549 * restore them. 4550 */ 4551 zc->zc_obj |= ZPROP_ERR_NORESTORE; 4552 } 4553 } 4554 out: 4555 nvlist_free(props); 4556 nvlist_free(origprops); 4557 nvlist_free(errors); 4558 releasef(fd); 4559 4560 if (error == 0) 4561 error = props_error; 4562 4563 return (error); 4564 } 4565 4566 /* 4567 * inputs: 4568 * zc_name name of snapshot to send 4569 * zc_cookie file descriptor to send stream to 4570 * zc_obj fromorigin flag (mutually exclusive with zc_fromobj) 4571 * zc_sendobj objsetid of snapshot to send 4572 * zc_fromobj objsetid of incremental fromsnap (may be zero) 4573 * zc_guid if set, estimate size of stream only. zc_cookie is ignored. 4574 * output size in zc_objset_type. 4575 * zc_flags lzc_send_flags 4576 * 4577 * outputs: 4578 * zc_objset_type estimated size, if zc_guid is set 4579 */ 4580 static int 4581 zfs_ioc_send(zfs_cmd_t *zc) 4582 { 4583 int error; 4584 offset_t off; 4585 boolean_t estimate = (zc->zc_guid != 0); 4586 boolean_t embedok = (zc->zc_flags & 0x1); 4587 boolean_t large_block_ok = (zc->zc_flags & 0x2); 4588 boolean_t compressok = (zc->zc_flags & 0x4); 4589 4590 if (zc->zc_obj != 0) { 4591 dsl_pool_t *dp; 4592 dsl_dataset_t *tosnap; 4593 4594 error = dsl_pool_hold(zc->zc_name, FTAG, &dp); 4595 if (error != 0) 4596 return (error); 4597 4598 error = dsl_dataset_hold_obj(dp, zc->zc_sendobj, FTAG, &tosnap); 4599 if (error != 0) { 4600 dsl_pool_rele(dp, FTAG); 4601 return (error); 4602 } 4603 4604 if (dsl_dir_is_clone(tosnap->ds_dir)) 4605 zc->zc_fromobj = 4606 dsl_dir_phys(tosnap->ds_dir)->dd_origin_obj; 4607 dsl_dataset_rele(tosnap, FTAG); 4608 dsl_pool_rele(dp, FTAG); 4609 } 4610 4611 if (estimate) { 4612 dsl_pool_t *dp; 4613 dsl_dataset_t *tosnap; 4614 dsl_dataset_t *fromsnap = NULL; 4615 4616 error = dsl_pool_hold(zc->zc_name, FTAG, &dp); 4617 if (error != 0) 4618 return (error); 4619 4620 error = dsl_dataset_hold_obj(dp, zc->zc_sendobj, FTAG, &tosnap); 4621 if (error != 0) { 4622 dsl_pool_rele(dp, FTAG); 4623 return (error); 4624 } 4625 4626 if (zc->zc_fromobj != 0) { 4627 error = dsl_dataset_hold_obj(dp, zc->zc_fromobj, 4628 FTAG, &fromsnap); 4629 if (error != 0) { 4630 dsl_dataset_rele(tosnap, FTAG); 4631 dsl_pool_rele(dp, FTAG); 4632 return (error); 4633 } 4634 } 4635 4636 error = dmu_send_estimate(tosnap, fromsnap, compressok, 4637 &zc->zc_objset_type); 4638 4639 if (fromsnap != NULL) 4640 dsl_dataset_rele(fromsnap, FTAG); 4641 dsl_dataset_rele(tosnap, FTAG); 4642 dsl_pool_rele(dp, FTAG); 4643 } else { 4644 file_t *fp = getf(zc->zc_cookie); 4645 if (fp == NULL) 4646 return (SET_ERROR(EBADF)); 4647 4648 off = fp->f_offset; 4649 error = dmu_send_obj(zc->zc_name, zc->zc_sendobj, 4650 zc->zc_fromobj, embedok, large_block_ok, compressok, 4651 zc->zc_cookie, fp->f_vnode, &off); 4652 4653 if (VOP_SEEK(fp->f_vnode, fp->f_offset, &off, NULL) == 0) 4654 fp->f_offset = off; 4655 releasef(zc->zc_cookie); 4656 } 4657 return (error); 4658 } 4659 4660 /* 4661 * inputs: 4662 * zc_name name of snapshot on which to report progress 4663 * zc_cookie file descriptor of send stream 4664 * 4665 * outputs: 4666 * zc_cookie number of bytes written in send stream thus far 4667 */ 4668 static int 4669 zfs_ioc_send_progress(zfs_cmd_t *zc) 4670 { 4671 dsl_pool_t *dp; 4672 dsl_dataset_t *ds; 4673 dmu_sendarg_t *dsp = NULL; 4674 int error; 4675 4676 error = dsl_pool_hold(zc->zc_name, FTAG, &dp); 4677 if (error != 0) 4678 return (error); 4679 4680 error = dsl_dataset_hold(dp, zc->zc_name, FTAG, &ds); 4681 if (error != 0) { 4682 dsl_pool_rele(dp, FTAG); 4683 return (error); 4684 } 4685 4686 mutex_enter(&ds->ds_sendstream_lock); 4687 4688 /* 4689 * Iterate over all the send streams currently active on this dataset. 4690 * If there's one which matches the specified file descriptor _and_ the 4691 * stream was started by the current process, return the progress of 4692 * that stream. 4693 */ 4694 for (dsp = list_head(&ds->ds_sendstreams); dsp != NULL; 4695 dsp = list_next(&ds->ds_sendstreams, dsp)) { 4696 if (dsp->dsa_outfd == zc->zc_cookie && 4697 dsp->dsa_proc == curproc) 4698 break; 4699 } 4700 4701 if (dsp != NULL) 4702 zc->zc_cookie = *(dsp->dsa_off); 4703 else 4704 error = SET_ERROR(ENOENT); 4705 4706 mutex_exit(&ds->ds_sendstream_lock); 4707 dsl_dataset_rele(ds, FTAG); 4708 dsl_pool_rele(dp, FTAG); 4709 return (error); 4710 } 4711 4712 static int 4713 zfs_ioc_inject_fault(zfs_cmd_t *zc) 4714 { 4715 int id, error; 4716 4717 error = zio_inject_fault(zc->zc_name, (int)zc->zc_guid, &id, 4718 &zc->zc_inject_record); 4719 4720 if (error == 0) 4721 zc->zc_guid = (uint64_t)id; 4722 4723 return (error); 4724 } 4725 4726 static int 4727 zfs_ioc_clear_fault(zfs_cmd_t *zc) 4728 { 4729 return (zio_clear_fault((int)zc->zc_guid)); 4730 } 4731 4732 static int 4733 zfs_ioc_inject_list_next(zfs_cmd_t *zc) 4734 { 4735 int id = (int)zc->zc_guid; 4736 int error; 4737 4738 error = zio_inject_list_next(&id, zc->zc_name, sizeof (zc->zc_name), 4739 &zc->zc_inject_record); 4740 4741 zc->zc_guid = id; 4742 4743 return (error); 4744 } 4745 4746 static int 4747 zfs_ioc_error_log(zfs_cmd_t *zc) 4748 { 4749 spa_t *spa; 4750 int error; 4751 size_t count = (size_t)zc->zc_nvlist_dst_size; 4752 4753 if ((error = spa_open(zc->zc_name, &spa, FTAG)) != 0) 4754 return (error); 4755 4756 error = spa_get_errlog(spa, (void *)(uintptr_t)zc->zc_nvlist_dst, 4757 &count); 4758 if (error == 0) 4759 zc->zc_nvlist_dst_size = count; 4760 else 4761 zc->zc_nvlist_dst_size = spa_get_errlog_size(spa); 4762 4763 spa_close(spa, FTAG); 4764 4765 return (error); 4766 } 4767 4768 static int 4769 zfs_ioc_clear(zfs_cmd_t *zc) 4770 { 4771 spa_t *spa; 4772 vdev_t *vd; 4773 int error; 4774 4775 /* 4776 * On zpool clear we also fix up missing slogs 4777 */ 4778 mutex_enter(&spa_namespace_lock); 4779 spa = spa_lookup(zc->zc_name); 4780 if (spa == NULL) { 4781 mutex_exit(&spa_namespace_lock); 4782 return (SET_ERROR(EIO)); 4783 } 4784 if (spa_get_log_state(spa) == SPA_LOG_MISSING) { 4785 /* we need to let spa_open/spa_load clear the chains */ 4786 spa_set_log_state(spa, SPA_LOG_CLEAR); 4787 } 4788 spa->spa_last_open_failed = 0; 4789 mutex_exit(&spa_namespace_lock); 4790 4791 if (zc->zc_cookie & ZPOOL_NO_REWIND) { 4792 error = spa_open(zc->zc_name, &spa, FTAG); 4793 } else { 4794 nvlist_t *policy; 4795 nvlist_t *config = NULL; 4796 4797 if (zc->zc_nvlist_src == NULL) 4798 return (SET_ERROR(EINVAL)); 4799 4800 if ((error = get_nvlist(zc->zc_nvlist_src, 4801 zc->zc_nvlist_src_size, zc->zc_iflags, &policy)) == 0) { 4802 error = spa_open_rewind(zc->zc_name, &spa, FTAG, 4803 policy, &config); 4804 if (config != NULL) { 4805 int err; 4806 4807 if ((err = put_nvlist(zc, config)) != 0) 4808 error = err; 4809 nvlist_free(config); 4810 } 4811 nvlist_free(policy); 4812 } 4813 } 4814 4815 if (error != 0) 4816 return (error); 4817 4818 spa_vdev_state_enter(spa, SCL_NONE); 4819 4820 if (zc->zc_guid == 0) { 4821 vd = NULL; 4822 } else { 4823 vd = spa_lookup_by_guid(spa, zc->zc_guid, B_TRUE); 4824 if (vd == NULL) { 4825 (void) spa_vdev_state_exit(spa, NULL, ENODEV); 4826 spa_close(spa, FTAG); 4827 return (SET_ERROR(ENODEV)); 4828 } 4829 } 4830 4831 vdev_clear(spa, vd); 4832 4833 (void) spa_vdev_state_exit(spa, NULL, 0); 4834 4835 /* 4836 * Resume any suspended I/Os. 4837 */ 4838 if (zio_resume(spa) != 0) 4839 error = SET_ERROR(EIO); 4840 4841 spa_close(spa, FTAG); 4842 4843 return (error); 4844 } 4845 4846 static int 4847 zfs_ioc_pool_reopen(zfs_cmd_t *zc) 4848 { 4849 spa_t *spa; 4850 int error; 4851 4852 error = spa_open(zc->zc_name, &spa, FTAG); 4853 if (error != 0) 4854 return (error); 4855 4856 spa_vdev_state_enter(spa, SCL_NONE); 4857 4858 /* 4859 * If a resilver is already in progress then set the 4860 * spa_scrub_reopen flag to B_TRUE so that we don't restart 4861 * the scan as a side effect of the reopen. Otherwise, let 4862 * vdev_open() decided if a resilver is required. 4863 */ 4864 spa->spa_scrub_reopen = dsl_scan_resilvering(spa->spa_dsl_pool); 4865 vdev_reopen(spa->spa_root_vdev); 4866 spa->spa_scrub_reopen = B_FALSE; 4867 4868 (void) spa_vdev_state_exit(spa, NULL, 0); 4869 spa_close(spa, FTAG); 4870 return (0); 4871 } 4872 /* 4873 * inputs: 4874 * zc_name name of filesystem 4875 * 4876 * outputs: 4877 * zc_string name of conflicting snapshot, if there is one 4878 */ 4879 static int 4880 zfs_ioc_promote(zfs_cmd_t *zc) 4881 { 4882 dsl_pool_t *dp; 4883 dsl_dataset_t *ds, *ods; 4884 char origin[ZFS_MAX_DATASET_NAME_LEN]; 4885 char *cp; 4886 int error; 4887 4888 zc->zc_name[sizeof (zc->zc_name) - 1] = '\0'; 4889 if (dataset_namecheck(zc->zc_name, NULL, NULL) != 0 || 4890 strchr(zc->zc_name, '%')) 4891 return (SET_ERROR(EINVAL)); 4892 4893 error = dsl_pool_hold(zc->zc_name, FTAG, &dp); 4894 if (error != 0) 4895 return (error); 4896 4897 error = dsl_dataset_hold(dp, zc->zc_name, FTAG, &ds); 4898 if (error != 0) { 4899 dsl_pool_rele(dp, FTAG); 4900 return (error); 4901 } 4902 4903 if (!dsl_dir_is_clone(ds->ds_dir)) { 4904 dsl_dataset_rele(ds, FTAG); 4905 dsl_pool_rele(dp, FTAG); 4906 return (SET_ERROR(EINVAL)); 4907 } 4908 4909 error = dsl_dataset_hold_obj(dp, 4910 dsl_dir_phys(ds->ds_dir)->dd_origin_obj, FTAG, &ods); 4911 if (error != 0) { 4912 dsl_dataset_rele(ds, FTAG); 4913 dsl_pool_rele(dp, FTAG); 4914 return (error); 4915 } 4916 4917 dsl_dataset_name(ods, origin); 4918 dsl_dataset_rele(ods, FTAG); 4919 dsl_dataset_rele(ds, FTAG); 4920 dsl_pool_rele(dp, FTAG); 4921 4922 /* 4923 * We don't need to unmount *all* the origin fs's snapshots, but 4924 * it's easier. 4925 */ 4926 cp = strchr(origin, '@'); 4927 if (cp) 4928 *cp = '\0'; 4929 (void) dmu_objset_find(origin, 4930 zfs_unmount_snap_cb, NULL, DS_FIND_SNAPSHOTS); 4931 return (dsl_dataset_promote(zc->zc_name, zc->zc_string)); 4932 } 4933 4934 /* 4935 * Retrieve a single {user|group}{used|quota}@... property. 4936 * 4937 * inputs: 4938 * zc_name name of filesystem 4939 * zc_objset_type zfs_userquota_prop_t 4940 * zc_value domain name (eg. "S-1-234-567-89") 4941 * zc_guid RID/UID/GID 4942 * 4943 * outputs: 4944 * zc_cookie property value 4945 */ 4946 static int 4947 zfs_ioc_userspace_one(zfs_cmd_t *zc) 4948 { 4949 zfsvfs_t *zfsvfs; 4950 int error; 4951 4952 if (zc->zc_objset_type >= ZFS_NUM_USERQUOTA_PROPS) 4953 return (SET_ERROR(EINVAL)); 4954 4955 error = zfsvfs_hold(zc->zc_name, FTAG, &zfsvfs, B_FALSE); 4956 if (error != 0) 4957 return (error); 4958 4959 error = zfs_userspace_one(zfsvfs, 4960 zc->zc_objset_type, zc->zc_value, zc->zc_guid, &zc->zc_cookie); 4961 zfsvfs_rele(zfsvfs, FTAG); 4962 4963 return (error); 4964 } 4965 4966 /* 4967 * inputs: 4968 * zc_name name of filesystem 4969 * zc_cookie zap cursor 4970 * zc_objset_type zfs_userquota_prop_t 4971 * zc_nvlist_dst[_size] buffer to fill (not really an nvlist) 4972 * 4973 * outputs: 4974 * zc_nvlist_dst[_size] data buffer (array of zfs_useracct_t) 4975 * zc_cookie zap cursor 4976 */ 4977 static int 4978 zfs_ioc_userspace_many(zfs_cmd_t *zc) 4979 { 4980 zfsvfs_t *zfsvfs; 4981 int bufsize = zc->zc_nvlist_dst_size; 4982 4983 if (bufsize <= 0) 4984 return (SET_ERROR(ENOMEM)); 4985 4986 int error = zfsvfs_hold(zc->zc_name, FTAG, &zfsvfs, B_FALSE); 4987 if (error != 0) 4988 return (error); 4989 4990 void *buf = kmem_alloc(bufsize, KM_SLEEP); 4991 4992 error = zfs_userspace_many(zfsvfs, zc->zc_objset_type, &zc->zc_cookie, 4993 buf, &zc->zc_nvlist_dst_size); 4994 4995 if (error == 0) { 4996 error = xcopyout(buf, 4997 (void *)(uintptr_t)zc->zc_nvlist_dst, 4998 zc->zc_nvlist_dst_size); 4999 } 5000 kmem_free(buf, bufsize); 5001 zfsvfs_rele(zfsvfs, FTAG); 5002 5003 return (error); 5004 } 5005 5006 /* 5007 * inputs: 5008 * zc_name name of filesystem 5009 * 5010 * outputs: 5011 * none 5012 */ 5013 static int 5014 zfs_ioc_userspace_upgrade(zfs_cmd_t *zc) 5015 { 5016 objset_t *os; 5017 int error = 0; 5018 zfsvfs_t *zfsvfs; 5019 5020 if (getzfsvfs(zc->zc_name, &zfsvfs) == 0) { 5021 if (!dmu_objset_userused_enabled(zfsvfs->z_os)) { 5022 /* 5023 * If userused is not enabled, it may be because the 5024 * objset needs to be closed & reopened (to grow the 5025 * objset_phys_t). Suspend/resume the fs will do that. 5026 */ 5027 dsl_dataset_t *ds, *newds; 5028 5029 ds = dmu_objset_ds(zfsvfs->z_os); 5030 error = zfs_suspend_fs(zfsvfs); 5031 if (error == 0) { 5032 dmu_objset_refresh_ownership(ds, &newds, 5033 zfsvfs); 5034 error = zfs_resume_fs(zfsvfs, newds); 5035 } 5036 } 5037 if (error == 0) 5038 error = dmu_objset_userspace_upgrade(zfsvfs->z_os); 5039 VFS_RELE(zfsvfs->z_vfs); 5040 } else { 5041 /* XXX kind of reading contents without owning */ 5042 error = dmu_objset_hold(zc->zc_name, FTAG, &os); 5043 if (error != 0) 5044 return (error); 5045 5046 error = dmu_objset_userspace_upgrade(os); 5047 dmu_objset_rele(os, FTAG); 5048 } 5049 5050 return (error); 5051 } 5052 5053 /* 5054 * We don't want to have a hard dependency 5055 * against some special symbols in sharefs 5056 * nfs, and smbsrv. Determine them if needed when 5057 * the first file system is shared. 5058 * Neither sharefs, nfs or smbsrv are unloadable modules. 5059 */ 5060 int (*znfsexport_fs)(void *arg); 5061 int (*zshare_fs)(enum sharefs_sys_op, share_t *, uint32_t); 5062 int (*zsmbexport_fs)(void *arg, boolean_t add_share); 5063 5064 int zfs_nfsshare_inited; 5065 int zfs_smbshare_inited; 5066 5067 ddi_modhandle_t nfs_mod; 5068 ddi_modhandle_t sharefs_mod; 5069 ddi_modhandle_t smbsrv_mod; 5070 kmutex_t zfs_share_lock; 5071 5072 static int 5073 zfs_init_sharefs() 5074 { 5075 int error; 5076 5077 ASSERT(MUTEX_HELD(&zfs_share_lock)); 5078 /* Both NFS and SMB shares also require sharetab support. */ 5079 if (sharefs_mod == NULL && ((sharefs_mod = 5080 ddi_modopen("fs/sharefs", 5081 KRTLD_MODE_FIRST, &error)) == NULL)) { 5082 return (SET_ERROR(ENOSYS)); 5083 } 5084 if (zshare_fs == NULL && ((zshare_fs = 5085 (int (*)(enum sharefs_sys_op, share_t *, uint32_t)) 5086 ddi_modsym(sharefs_mod, "sharefs_impl", &error)) == NULL)) { 5087 return (SET_ERROR(ENOSYS)); 5088 } 5089 return (0); 5090 } 5091 5092 static int 5093 zfs_ioc_share(zfs_cmd_t *zc) 5094 { 5095 int error; 5096 int opcode; 5097 5098 switch (zc->zc_share.z_sharetype) { 5099 case ZFS_SHARE_NFS: 5100 case ZFS_UNSHARE_NFS: 5101 if (zfs_nfsshare_inited == 0) { 5102 mutex_enter(&zfs_share_lock); 5103 if (nfs_mod == NULL && ((nfs_mod = ddi_modopen("fs/nfs", 5104 KRTLD_MODE_FIRST, &error)) == NULL)) { 5105 mutex_exit(&zfs_share_lock); 5106 return (SET_ERROR(ENOSYS)); 5107 } 5108 if (znfsexport_fs == NULL && 5109 ((znfsexport_fs = (int (*)(void *)) 5110 ddi_modsym(nfs_mod, 5111 "nfs_export", &error)) == NULL)) { 5112 mutex_exit(&zfs_share_lock); 5113 return (SET_ERROR(ENOSYS)); 5114 } 5115 error = zfs_init_sharefs(); 5116 if (error != 0) { 5117 mutex_exit(&zfs_share_lock); 5118 return (SET_ERROR(ENOSYS)); 5119 } 5120 zfs_nfsshare_inited = 1; 5121 mutex_exit(&zfs_share_lock); 5122 } 5123 break; 5124 case ZFS_SHARE_SMB: 5125 case ZFS_UNSHARE_SMB: 5126 if (zfs_smbshare_inited == 0) { 5127 mutex_enter(&zfs_share_lock); 5128 if (smbsrv_mod == NULL && ((smbsrv_mod = 5129 ddi_modopen("drv/smbsrv", 5130 KRTLD_MODE_FIRST, &error)) == NULL)) { 5131 mutex_exit(&zfs_share_lock); 5132 return (SET_ERROR(ENOSYS)); 5133 } 5134 if (zsmbexport_fs == NULL && ((zsmbexport_fs = 5135 (int (*)(void *, boolean_t))ddi_modsym(smbsrv_mod, 5136 "smb_server_share", &error)) == NULL)) { 5137 mutex_exit(&zfs_share_lock); 5138 return (SET_ERROR(ENOSYS)); 5139 } 5140 error = zfs_init_sharefs(); 5141 if (error != 0) { 5142 mutex_exit(&zfs_share_lock); 5143 return (SET_ERROR(ENOSYS)); 5144 } 5145 zfs_smbshare_inited = 1; 5146 mutex_exit(&zfs_share_lock); 5147 } 5148 break; 5149 default: 5150 return (SET_ERROR(EINVAL)); 5151 } 5152 5153 switch (zc->zc_share.z_sharetype) { 5154 case ZFS_SHARE_NFS: 5155 case ZFS_UNSHARE_NFS: 5156 if (error = 5157 znfsexport_fs((void *) 5158 (uintptr_t)zc->zc_share.z_exportdata)) 5159 return (error); 5160 break; 5161 case ZFS_SHARE_SMB: 5162 case ZFS_UNSHARE_SMB: 5163 if (error = zsmbexport_fs((void *) 5164 (uintptr_t)zc->zc_share.z_exportdata, 5165 zc->zc_share.z_sharetype == ZFS_SHARE_SMB ? 5166 B_TRUE: B_FALSE)) { 5167 return (error); 5168 } 5169 break; 5170 } 5171 5172 opcode = (zc->zc_share.z_sharetype == ZFS_SHARE_NFS || 5173 zc->zc_share.z_sharetype == ZFS_SHARE_SMB) ? 5174 SHAREFS_ADD : SHAREFS_REMOVE; 5175 5176 /* 5177 * Add or remove share from sharetab 5178 */ 5179 error = zshare_fs(opcode, 5180 (void *)(uintptr_t)zc->zc_share.z_sharedata, 5181 zc->zc_share.z_sharemax); 5182 5183 return (error); 5184 5185 } 5186 5187 ace_t full_access[] = { 5188 {(uid_t)-1, ACE_ALL_PERMS, ACE_EVERYONE, 0} 5189 }; 5190 5191 /* 5192 * inputs: 5193 * zc_name name of containing filesystem 5194 * zc_obj object # beyond which we want next in-use object # 5195 * 5196 * outputs: 5197 * zc_obj next in-use object # 5198 */ 5199 static int 5200 zfs_ioc_next_obj(zfs_cmd_t *zc) 5201 { 5202 objset_t *os = NULL; 5203 int error; 5204 5205 error = dmu_objset_hold(zc->zc_name, FTAG, &os); 5206 if (error != 0) 5207 return (error); 5208 5209 error = dmu_object_next(os, &zc->zc_obj, B_FALSE, 5210 dsl_dataset_phys(os->os_dsl_dataset)->ds_prev_snap_txg); 5211 5212 dmu_objset_rele(os, FTAG); 5213 return (error); 5214 } 5215 5216 /* 5217 * inputs: 5218 * zc_name name of filesystem 5219 * zc_value prefix name for snapshot 5220 * zc_cleanup_fd cleanup-on-exit file descriptor for calling process 5221 * 5222 * outputs: 5223 * zc_value short name of new snapshot 5224 */ 5225 static int 5226 zfs_ioc_tmp_snapshot(zfs_cmd_t *zc) 5227 { 5228 char *snap_name; 5229 char *hold_name; 5230 int error; 5231 minor_t minor; 5232 5233 error = zfs_onexit_fd_hold(zc->zc_cleanup_fd, &minor); 5234 if (error != 0) 5235 return (error); 5236 5237 snap_name = kmem_asprintf("%s-%016llx", zc->zc_value, 5238 (u_longlong_t)ddi_get_lbolt64()); 5239 hold_name = kmem_asprintf("%%%s", zc->zc_value); 5240 5241 error = dsl_dataset_snapshot_tmp(zc->zc_name, snap_name, minor, 5242 hold_name); 5243 if (error == 0) 5244 (void) strcpy(zc->zc_value, snap_name); 5245 strfree(snap_name); 5246 strfree(hold_name); 5247 zfs_onexit_fd_rele(zc->zc_cleanup_fd); 5248 return (error); 5249 } 5250 5251 /* 5252 * inputs: 5253 * zc_name name of "to" snapshot 5254 * zc_value name of "from" snapshot 5255 * zc_cookie file descriptor to write diff data on 5256 * 5257 * outputs: 5258 * dmu_diff_record_t's to the file descriptor 5259 */ 5260 static int 5261 zfs_ioc_diff(zfs_cmd_t *zc) 5262 { 5263 file_t *fp; 5264 offset_t off; 5265 int error; 5266 5267 fp = getf(zc->zc_cookie); 5268 if (fp == NULL) 5269 return (SET_ERROR(EBADF)); 5270 5271 off = fp->f_offset; 5272 5273 error = dmu_diff(zc->zc_name, zc->zc_value, fp->f_vnode, &off); 5274 5275 if (VOP_SEEK(fp->f_vnode, fp->f_offset, &off, NULL) == 0) 5276 fp->f_offset = off; 5277 releasef(zc->zc_cookie); 5278 5279 return (error); 5280 } 5281 5282 /* 5283 * Remove all ACL files in shares dir 5284 */ 5285 static int 5286 zfs_smb_acl_purge(znode_t *dzp) 5287 { 5288 zap_cursor_t zc; 5289 zap_attribute_t zap; 5290 zfsvfs_t *zfsvfs = dzp->z_zfsvfs; 5291 int error; 5292 5293 for (zap_cursor_init(&zc, zfsvfs->z_os, dzp->z_id); 5294 (error = zap_cursor_retrieve(&zc, &zap)) == 0; 5295 zap_cursor_advance(&zc)) { 5296 if ((error = VOP_REMOVE(ZTOV(dzp), zap.za_name, kcred, 5297 NULL, 0)) != 0) 5298 break; 5299 } 5300 zap_cursor_fini(&zc); 5301 return (error); 5302 } 5303 5304 static int 5305 zfs_ioc_smb_acl(zfs_cmd_t *zc) 5306 { 5307 vnode_t *vp; 5308 znode_t *dzp; 5309 vnode_t *resourcevp = NULL; 5310 znode_t *sharedir; 5311 zfsvfs_t *zfsvfs; 5312 nvlist_t *nvlist; 5313 char *src, *target; 5314 vattr_t vattr; 5315 vsecattr_t vsec; 5316 int error = 0; 5317 5318 if ((error = lookupname(zc->zc_value, UIO_SYSSPACE, 5319 NO_FOLLOW, NULL, &vp)) != 0) 5320 return (error); 5321 5322 /* Now make sure mntpnt and dataset are ZFS */ 5323 5324 if (vp->v_vfsp->vfs_fstype != zfsfstype || 5325 (strcmp((char *)refstr_value(vp->v_vfsp->vfs_resource), 5326 zc->zc_name) != 0)) { 5327 VN_RELE(vp); 5328 return (SET_ERROR(EINVAL)); 5329 } 5330 5331 dzp = VTOZ(vp); 5332 zfsvfs = dzp->z_zfsvfs; 5333 ZFS_ENTER(zfsvfs); 5334 5335 /* 5336 * Create share dir if its missing. 5337 */ 5338 mutex_enter(&zfsvfs->z_lock); 5339 if (zfsvfs->z_shares_dir == 0) { 5340 dmu_tx_t *tx; 5341 5342 tx = dmu_tx_create(zfsvfs->z_os); 5343 dmu_tx_hold_zap(tx, MASTER_NODE_OBJ, TRUE, 5344 ZFS_SHARES_DIR); 5345 dmu_tx_hold_zap(tx, DMU_NEW_OBJECT, FALSE, NULL); 5346 error = dmu_tx_assign(tx, TXG_WAIT); 5347 if (error != 0) { 5348 dmu_tx_abort(tx); 5349 } else { 5350 error = zfs_create_share_dir(zfsvfs, tx); 5351 dmu_tx_commit(tx); 5352 } 5353 if (error != 0) { 5354 mutex_exit(&zfsvfs->z_lock); 5355 VN_RELE(vp); 5356 ZFS_EXIT(zfsvfs); 5357 return (error); 5358 } 5359 } 5360 mutex_exit(&zfsvfs->z_lock); 5361 5362 ASSERT(zfsvfs->z_shares_dir); 5363 if ((error = zfs_zget(zfsvfs, zfsvfs->z_shares_dir, &sharedir)) != 0) { 5364 VN_RELE(vp); 5365 ZFS_EXIT(zfsvfs); 5366 return (error); 5367 } 5368 5369 switch (zc->zc_cookie) { 5370 case ZFS_SMB_ACL_ADD: 5371 vattr.va_mask = AT_MODE|AT_UID|AT_GID|AT_TYPE; 5372 vattr.va_type = VREG; 5373 vattr.va_mode = S_IFREG|0777; 5374 vattr.va_uid = 0; 5375 vattr.va_gid = 0; 5376 5377 vsec.vsa_mask = VSA_ACE; 5378 vsec.vsa_aclentp = &full_access; 5379 vsec.vsa_aclentsz = sizeof (full_access); 5380 vsec.vsa_aclcnt = 1; 5381 5382 error = VOP_CREATE(ZTOV(sharedir), zc->zc_string, 5383 &vattr, EXCL, 0, &resourcevp, kcred, 0, NULL, &vsec); 5384 if (resourcevp) 5385 VN_RELE(resourcevp); 5386 break; 5387 5388 case ZFS_SMB_ACL_REMOVE: 5389 error = VOP_REMOVE(ZTOV(sharedir), zc->zc_string, kcred, 5390 NULL, 0); 5391 break; 5392 5393 case ZFS_SMB_ACL_RENAME: 5394 if ((error = get_nvlist(zc->zc_nvlist_src, 5395 zc->zc_nvlist_src_size, zc->zc_iflags, &nvlist)) != 0) { 5396 VN_RELE(vp); 5397 VN_RELE(ZTOV(sharedir)); 5398 ZFS_EXIT(zfsvfs); 5399 return (error); 5400 } 5401 if (nvlist_lookup_string(nvlist, ZFS_SMB_ACL_SRC, &src) || 5402 nvlist_lookup_string(nvlist, ZFS_SMB_ACL_TARGET, 5403 &target)) { 5404 VN_RELE(vp); 5405 VN_RELE(ZTOV(sharedir)); 5406 ZFS_EXIT(zfsvfs); 5407 nvlist_free(nvlist); 5408 return (error); 5409 } 5410 error = VOP_RENAME(ZTOV(sharedir), src, ZTOV(sharedir), target, 5411 kcred, NULL, 0); 5412 nvlist_free(nvlist); 5413 break; 5414 5415 case ZFS_SMB_ACL_PURGE: 5416 error = zfs_smb_acl_purge(sharedir); 5417 break; 5418 5419 default: 5420 error = SET_ERROR(EINVAL); 5421 break; 5422 } 5423 5424 VN_RELE(vp); 5425 VN_RELE(ZTOV(sharedir)); 5426 5427 ZFS_EXIT(zfsvfs); 5428 5429 return (error); 5430 } 5431 5432 /* 5433 * innvl: { 5434 * "holds" -> { snapname -> holdname (string), ... } 5435 * (optional) "cleanup_fd" -> fd (int32) 5436 * } 5437 * 5438 * outnvl: { 5439 * snapname -> error value (int32) 5440 * ... 5441 * } 5442 */ 5443 /* ARGSUSED */ 5444 static int 5445 zfs_ioc_hold(const char *pool, nvlist_t *args, nvlist_t *errlist) 5446 { 5447 nvpair_t *pair; 5448 nvlist_t *holds; 5449 int cleanup_fd = -1; 5450 int error; 5451 minor_t minor = 0; 5452 5453 error = nvlist_lookup_nvlist(args, "holds", &holds); 5454 if (error != 0) 5455 return (SET_ERROR(EINVAL)); 5456 5457 /* make sure the user didn't pass us any invalid (empty) tags */ 5458 for (pair = nvlist_next_nvpair(holds, NULL); pair != NULL; 5459 pair = nvlist_next_nvpair(holds, pair)) { 5460 char *htag; 5461 5462 error = nvpair_value_string(pair, &htag); 5463 if (error != 0) 5464 return (SET_ERROR(error)); 5465 5466 if (strlen(htag) == 0) 5467 return (SET_ERROR(EINVAL)); 5468 } 5469 5470 if (nvlist_lookup_int32(args, "cleanup_fd", &cleanup_fd) == 0) { 5471 error = zfs_onexit_fd_hold(cleanup_fd, &minor); 5472 if (error != 0) 5473 return (error); 5474 } 5475 5476 error = dsl_dataset_user_hold(holds, minor, errlist); 5477 if (minor != 0) 5478 zfs_onexit_fd_rele(cleanup_fd); 5479 return (error); 5480 } 5481 5482 /* 5483 * innvl is not used. 5484 * 5485 * outnvl: { 5486 * holdname -> time added (uint64 seconds since epoch) 5487 * ... 5488 * } 5489 */ 5490 /* ARGSUSED */ 5491 static int 5492 zfs_ioc_get_holds(const char *snapname, nvlist_t *args, nvlist_t *outnvl) 5493 { 5494 return (dsl_dataset_get_holds(snapname, outnvl)); 5495 } 5496 5497 /* 5498 * innvl: { 5499 * snapname -> { holdname, ... } 5500 * ... 5501 * } 5502 * 5503 * outnvl: { 5504 * snapname -> error value (int32) 5505 * ... 5506 * } 5507 */ 5508 /* ARGSUSED */ 5509 static int 5510 zfs_ioc_release(const char *pool, nvlist_t *holds, nvlist_t *errlist) 5511 { 5512 return (dsl_dataset_user_release(holds, errlist)); 5513 } 5514 5515 /* 5516 * inputs: 5517 * zc_name name of new filesystem or snapshot 5518 * zc_value full name of old snapshot 5519 * 5520 * outputs: 5521 * zc_cookie space in bytes 5522 * zc_objset_type compressed space in bytes 5523 * zc_perm_action uncompressed space in bytes 5524 */ 5525 static int 5526 zfs_ioc_space_written(zfs_cmd_t *zc) 5527 { 5528 int error; 5529 dsl_pool_t *dp; 5530 dsl_dataset_t *new, *old; 5531 5532 error = dsl_pool_hold(zc->zc_name, FTAG, &dp); 5533 if (error != 0) 5534 return (error); 5535 error = dsl_dataset_hold(dp, zc->zc_name, FTAG, &new); 5536 if (error != 0) { 5537 dsl_pool_rele(dp, FTAG); 5538 return (error); 5539 } 5540 error = dsl_dataset_hold(dp, zc->zc_value, FTAG, &old); 5541 if (error != 0) { 5542 dsl_dataset_rele(new, FTAG); 5543 dsl_pool_rele(dp, FTAG); 5544 return (error); 5545 } 5546 5547 error = dsl_dataset_space_written(old, new, &zc->zc_cookie, 5548 &zc->zc_objset_type, &zc->zc_perm_action); 5549 dsl_dataset_rele(old, FTAG); 5550 dsl_dataset_rele(new, FTAG); 5551 dsl_pool_rele(dp, FTAG); 5552 return (error); 5553 } 5554 5555 /* 5556 * innvl: { 5557 * "firstsnap" -> snapshot name 5558 * } 5559 * 5560 * outnvl: { 5561 * "used" -> space in bytes 5562 * "compressed" -> compressed space in bytes 5563 * "uncompressed" -> uncompressed space in bytes 5564 * } 5565 */ 5566 static int 5567 zfs_ioc_space_snaps(const char *lastsnap, nvlist_t *innvl, nvlist_t *outnvl) 5568 { 5569 int error; 5570 dsl_pool_t *dp; 5571 dsl_dataset_t *new, *old; 5572 char *firstsnap; 5573 uint64_t used, comp, uncomp; 5574 5575 if (nvlist_lookup_string(innvl, "firstsnap", &firstsnap) != 0) 5576 return (SET_ERROR(EINVAL)); 5577 5578 error = dsl_pool_hold(lastsnap, FTAG, &dp); 5579 if (error != 0) 5580 return (error); 5581 5582 error = dsl_dataset_hold(dp, lastsnap, FTAG, &new); 5583 if (error == 0 && !new->ds_is_snapshot) { 5584 dsl_dataset_rele(new, FTAG); 5585 error = SET_ERROR(EINVAL); 5586 } 5587 if (error != 0) { 5588 dsl_pool_rele(dp, FTAG); 5589 return (error); 5590 } 5591 error = dsl_dataset_hold(dp, firstsnap, FTAG, &old); 5592 if (error == 0 && !old->ds_is_snapshot) { 5593 dsl_dataset_rele(old, FTAG); 5594 error = SET_ERROR(EINVAL); 5595 } 5596 if (error != 0) { 5597 dsl_dataset_rele(new, FTAG); 5598 dsl_pool_rele(dp, FTAG); 5599 return (error); 5600 } 5601 5602 error = dsl_dataset_space_wouldfree(old, new, &used, &comp, &uncomp); 5603 dsl_dataset_rele(old, FTAG); 5604 dsl_dataset_rele(new, FTAG); 5605 dsl_pool_rele(dp, FTAG); 5606 fnvlist_add_uint64(outnvl, "used", used); 5607 fnvlist_add_uint64(outnvl, "compressed", comp); 5608 fnvlist_add_uint64(outnvl, "uncompressed", uncomp); 5609 return (error); 5610 } 5611 5612 /* 5613 * innvl: { 5614 * "fd" -> file descriptor to write stream to (int32) 5615 * (optional) "fromsnap" -> full snap name to send an incremental from 5616 * (optional) "largeblockok" -> (value ignored) 5617 * indicates that blocks > 128KB are permitted 5618 * (optional) "embedok" -> (value ignored) 5619 * presence indicates DRR_WRITE_EMBEDDED records are permitted 5620 * (optional) "compressok" -> (value ignored) 5621 * presence indicates compressed DRR_WRITE records are permitted 5622 * (optional) "resume_object" and "resume_offset" -> (uint64) 5623 * if present, resume send stream from specified object and offset. 5624 * } 5625 * 5626 * outnvl is unused 5627 */ 5628 /* ARGSUSED */ 5629 static int 5630 zfs_ioc_send_new(const char *snapname, nvlist_t *innvl, nvlist_t *outnvl) 5631 { 5632 int error; 5633 offset_t off; 5634 char *fromname = NULL; 5635 int fd; 5636 boolean_t largeblockok; 5637 boolean_t embedok; 5638 boolean_t compressok; 5639 uint64_t resumeobj = 0; 5640 uint64_t resumeoff = 0; 5641 5642 error = nvlist_lookup_int32(innvl, "fd", &fd); 5643 if (error != 0) 5644 return (SET_ERROR(EINVAL)); 5645 5646 (void) nvlist_lookup_string(innvl, "fromsnap", &fromname); 5647 5648 largeblockok = nvlist_exists(innvl, "largeblockok"); 5649 embedok = nvlist_exists(innvl, "embedok"); 5650 compressok = nvlist_exists(innvl, "compressok"); 5651 5652 (void) nvlist_lookup_uint64(innvl, "resume_object", &resumeobj); 5653 (void) nvlist_lookup_uint64(innvl, "resume_offset", &resumeoff); 5654 5655 file_t *fp = getf(fd); 5656 if (fp == NULL) 5657 return (SET_ERROR(EBADF)); 5658 5659 off = fp->f_offset; 5660 error = dmu_send(snapname, fromname, embedok, largeblockok, compressok, 5661 fd, resumeobj, resumeoff, fp->f_vnode, &off); 5662 5663 if (VOP_SEEK(fp->f_vnode, fp->f_offset, &off, NULL) == 0) 5664 fp->f_offset = off; 5665 releasef(fd); 5666 return (error); 5667 } 5668 5669 /* 5670 * Determine approximately how large a zfs send stream will be -- the number 5671 * of bytes that will be written to the fd supplied to zfs_ioc_send_new(). 5672 * 5673 * innvl: { 5674 * (optional) "from" -> full snap or bookmark name to send an incremental 5675 * from 5676 * (optional) "largeblockok" -> (value ignored) 5677 * indicates that blocks > 128KB are permitted 5678 * (optional) "embedok" -> (value ignored) 5679 * presence indicates DRR_WRITE_EMBEDDED records are permitted 5680 * (optional) "compressok" -> (value ignored) 5681 * presence indicates compressed DRR_WRITE records are permitted 5682 * } 5683 * 5684 * outnvl: { 5685 * "space" -> bytes of space (uint64) 5686 * } 5687 */ 5688 static int 5689 zfs_ioc_send_space(const char *snapname, nvlist_t *innvl, nvlist_t *outnvl) 5690 { 5691 dsl_pool_t *dp; 5692 dsl_dataset_t *tosnap; 5693 int error; 5694 char *fromname; 5695 boolean_t compressok; 5696 uint64_t space; 5697 5698 error = dsl_pool_hold(snapname, FTAG, &dp); 5699 if (error != 0) 5700 return (error); 5701 5702 error = dsl_dataset_hold(dp, snapname, FTAG, &tosnap); 5703 if (error != 0) { 5704 dsl_pool_rele(dp, FTAG); 5705 return (error); 5706 } 5707 5708 compressok = nvlist_exists(innvl, "compressok"); 5709 5710 error = nvlist_lookup_string(innvl, "from", &fromname); 5711 if (error == 0) { 5712 if (strchr(fromname, '@') != NULL) { 5713 /* 5714 * If from is a snapshot, hold it and use the more 5715 * efficient dmu_send_estimate to estimate send space 5716 * size using deadlists. 5717 */ 5718 dsl_dataset_t *fromsnap; 5719 error = dsl_dataset_hold(dp, fromname, FTAG, &fromsnap); 5720 if (error != 0) 5721 goto out; 5722 error = dmu_send_estimate(tosnap, fromsnap, compressok, 5723 &space); 5724 dsl_dataset_rele(fromsnap, FTAG); 5725 } else if (strchr(fromname, '#') != NULL) { 5726 /* 5727 * If from is a bookmark, fetch the creation TXG of the 5728 * snapshot it was created from and use that to find 5729 * blocks that were born after it. 5730 */ 5731 zfs_bookmark_phys_t frombm; 5732 5733 error = dsl_bookmark_lookup(dp, fromname, tosnap, 5734 &frombm); 5735 if (error != 0) 5736 goto out; 5737 error = dmu_send_estimate_from_txg(tosnap, 5738 frombm.zbm_creation_txg, compressok, &space); 5739 } else { 5740 /* 5741 * from is not properly formatted as a snapshot or 5742 * bookmark 5743 */ 5744 error = SET_ERROR(EINVAL); 5745 goto out; 5746 } 5747 } else { 5748 /* 5749 * If estimating the size of a full send, use dmu_send_estimate. 5750 */ 5751 error = dmu_send_estimate(tosnap, NULL, compressok, &space); 5752 } 5753 5754 fnvlist_add_uint64(outnvl, "space", space); 5755 5756 out: 5757 dsl_dataset_rele(tosnap, FTAG); 5758 dsl_pool_rele(dp, FTAG); 5759 return (error); 5760 } 5761 5762 static zfs_ioc_vec_t zfs_ioc_vec[ZFS_IOC_LAST - ZFS_IOC_FIRST]; 5763 5764 static void 5765 zfs_ioctl_register_legacy(zfs_ioc_t ioc, zfs_ioc_legacy_func_t *func, 5766 zfs_secpolicy_func_t *secpolicy, zfs_ioc_namecheck_t namecheck, 5767 boolean_t log_history, zfs_ioc_poolcheck_t pool_check) 5768 { 5769 zfs_ioc_vec_t *vec = &zfs_ioc_vec[ioc - ZFS_IOC_FIRST]; 5770 5771 ASSERT3U(ioc, >=, ZFS_IOC_FIRST); 5772 ASSERT3U(ioc, <, ZFS_IOC_LAST); 5773 ASSERT3P(vec->zvec_legacy_func, ==, NULL); 5774 ASSERT3P(vec->zvec_func, ==, NULL); 5775 5776 vec->zvec_legacy_func = func; 5777 vec->zvec_secpolicy = secpolicy; 5778 vec->zvec_namecheck = namecheck; 5779 vec->zvec_allow_log = log_history; 5780 vec->zvec_pool_check = pool_check; 5781 } 5782 5783 /* 5784 * See the block comment at the beginning of this file for details on 5785 * each argument to this function. 5786 */ 5787 static void 5788 zfs_ioctl_register(const char *name, zfs_ioc_t ioc, zfs_ioc_func_t *func, 5789 zfs_secpolicy_func_t *secpolicy, zfs_ioc_namecheck_t namecheck, 5790 zfs_ioc_poolcheck_t pool_check, boolean_t smush_outnvlist, 5791 boolean_t allow_log) 5792 { 5793 zfs_ioc_vec_t *vec = &zfs_ioc_vec[ioc - ZFS_IOC_FIRST]; 5794 5795 ASSERT3U(ioc, >=, ZFS_IOC_FIRST); 5796 ASSERT3U(ioc, <, ZFS_IOC_LAST); 5797 ASSERT3P(vec->zvec_legacy_func, ==, NULL); 5798 ASSERT3P(vec->zvec_func, ==, NULL); 5799 5800 /* if we are logging, the name must be valid */ 5801 ASSERT(!allow_log || namecheck != NO_NAME); 5802 5803 vec->zvec_name = name; 5804 vec->zvec_func = func; 5805 vec->zvec_secpolicy = secpolicy; 5806 vec->zvec_namecheck = namecheck; 5807 vec->zvec_pool_check = pool_check; 5808 vec->zvec_smush_outnvlist = smush_outnvlist; 5809 vec->zvec_allow_log = allow_log; 5810 } 5811 5812 static void 5813 zfs_ioctl_register_pool(zfs_ioc_t ioc, zfs_ioc_legacy_func_t *func, 5814 zfs_secpolicy_func_t *secpolicy, boolean_t log_history, 5815 zfs_ioc_poolcheck_t pool_check) 5816 { 5817 zfs_ioctl_register_legacy(ioc, func, secpolicy, 5818 POOL_NAME, log_history, pool_check); 5819 } 5820 5821 static void 5822 zfs_ioctl_register_dataset_nolog(zfs_ioc_t ioc, zfs_ioc_legacy_func_t *func, 5823 zfs_secpolicy_func_t *secpolicy, zfs_ioc_poolcheck_t pool_check) 5824 { 5825 zfs_ioctl_register_legacy(ioc, func, secpolicy, 5826 DATASET_NAME, B_FALSE, pool_check); 5827 } 5828 5829 static void 5830 zfs_ioctl_register_pool_modify(zfs_ioc_t ioc, zfs_ioc_legacy_func_t *func) 5831 { 5832 zfs_ioctl_register_legacy(ioc, func, zfs_secpolicy_config, 5833 POOL_NAME, B_TRUE, POOL_CHECK_SUSPENDED | POOL_CHECK_READONLY); 5834 } 5835 5836 static void 5837 zfs_ioctl_register_pool_meta(zfs_ioc_t ioc, zfs_ioc_legacy_func_t *func, 5838 zfs_secpolicy_func_t *secpolicy) 5839 { 5840 zfs_ioctl_register_legacy(ioc, func, secpolicy, 5841 NO_NAME, B_FALSE, POOL_CHECK_NONE); 5842 } 5843 5844 static void 5845 zfs_ioctl_register_dataset_read_secpolicy(zfs_ioc_t ioc, 5846 zfs_ioc_legacy_func_t *func, zfs_secpolicy_func_t *secpolicy) 5847 { 5848 zfs_ioctl_register_legacy(ioc, func, secpolicy, 5849 DATASET_NAME, B_FALSE, POOL_CHECK_SUSPENDED); 5850 } 5851 5852 static void 5853 zfs_ioctl_register_dataset_read(zfs_ioc_t ioc, zfs_ioc_legacy_func_t *func) 5854 { 5855 zfs_ioctl_register_dataset_read_secpolicy(ioc, func, 5856 zfs_secpolicy_read); 5857 } 5858 5859 static void 5860 zfs_ioctl_register_dataset_modify(zfs_ioc_t ioc, zfs_ioc_legacy_func_t *func, 5861 zfs_secpolicy_func_t *secpolicy) 5862 { 5863 zfs_ioctl_register_legacy(ioc, func, secpolicy, 5864 DATASET_NAME, B_TRUE, POOL_CHECK_SUSPENDED | POOL_CHECK_READONLY); 5865 } 5866 5867 static void 5868 zfs_ioctl_init(void) 5869 { 5870 zfs_ioctl_register("snapshot", ZFS_IOC_SNAPSHOT, 5871 zfs_ioc_snapshot, zfs_secpolicy_snapshot, POOL_NAME, 5872 POOL_CHECK_SUSPENDED | POOL_CHECK_READONLY, B_TRUE, B_TRUE); 5873 5874 zfs_ioctl_register("log_history", ZFS_IOC_LOG_HISTORY, 5875 zfs_ioc_log_history, zfs_secpolicy_log_history, NO_NAME, 5876 POOL_CHECK_SUSPENDED | POOL_CHECK_READONLY, B_FALSE, B_FALSE); 5877 5878 zfs_ioctl_register("space_snaps", ZFS_IOC_SPACE_SNAPS, 5879 zfs_ioc_space_snaps, zfs_secpolicy_read, DATASET_NAME, 5880 POOL_CHECK_SUSPENDED, B_FALSE, B_FALSE); 5881 5882 zfs_ioctl_register("send", ZFS_IOC_SEND_NEW, 5883 zfs_ioc_send_new, zfs_secpolicy_send_new, DATASET_NAME, 5884 POOL_CHECK_SUSPENDED, B_FALSE, B_FALSE); 5885 5886 zfs_ioctl_register("send_space", ZFS_IOC_SEND_SPACE, 5887 zfs_ioc_send_space, zfs_secpolicy_read, DATASET_NAME, 5888 POOL_CHECK_SUSPENDED, B_FALSE, B_FALSE); 5889 5890 zfs_ioctl_register("create", ZFS_IOC_CREATE, 5891 zfs_ioc_create, zfs_secpolicy_create_clone, DATASET_NAME, 5892 POOL_CHECK_SUSPENDED | POOL_CHECK_READONLY, B_TRUE, B_TRUE); 5893 5894 zfs_ioctl_register("clone", ZFS_IOC_CLONE, 5895 zfs_ioc_clone, zfs_secpolicy_create_clone, DATASET_NAME, 5896 POOL_CHECK_SUSPENDED | POOL_CHECK_READONLY, B_TRUE, B_TRUE); 5897 5898 zfs_ioctl_register("remap", ZFS_IOC_REMAP, 5899 zfs_ioc_remap, zfs_secpolicy_remap, DATASET_NAME, 5900 POOL_CHECK_SUSPENDED | POOL_CHECK_READONLY, B_FALSE, B_TRUE); 5901 5902 zfs_ioctl_register("destroy_snaps", ZFS_IOC_DESTROY_SNAPS, 5903 zfs_ioc_destroy_snaps, zfs_secpolicy_destroy_snaps, POOL_NAME, 5904 POOL_CHECK_SUSPENDED | POOL_CHECK_READONLY, B_TRUE, B_TRUE); 5905 5906 zfs_ioctl_register("hold", ZFS_IOC_HOLD, 5907 zfs_ioc_hold, zfs_secpolicy_hold, POOL_NAME, 5908 POOL_CHECK_SUSPENDED | POOL_CHECK_READONLY, B_TRUE, B_TRUE); 5909 zfs_ioctl_register("release", ZFS_IOC_RELEASE, 5910 zfs_ioc_release, zfs_secpolicy_release, POOL_NAME, 5911 POOL_CHECK_SUSPENDED | POOL_CHECK_READONLY, B_TRUE, B_TRUE); 5912 5913 zfs_ioctl_register("get_holds", ZFS_IOC_GET_HOLDS, 5914 zfs_ioc_get_holds, zfs_secpolicy_read, DATASET_NAME, 5915 POOL_CHECK_SUSPENDED, B_FALSE, B_FALSE); 5916 5917 zfs_ioctl_register("rollback", ZFS_IOC_ROLLBACK, 5918 zfs_ioc_rollback, zfs_secpolicy_rollback, DATASET_NAME, 5919 POOL_CHECK_SUSPENDED | POOL_CHECK_READONLY, B_FALSE, B_TRUE); 5920 5921 zfs_ioctl_register("bookmark", ZFS_IOC_BOOKMARK, 5922 zfs_ioc_bookmark, zfs_secpolicy_bookmark, POOL_NAME, 5923 POOL_CHECK_SUSPENDED | POOL_CHECK_READONLY, B_TRUE, B_TRUE); 5924 5925 zfs_ioctl_register("get_bookmarks", ZFS_IOC_GET_BOOKMARKS, 5926 zfs_ioc_get_bookmarks, zfs_secpolicy_read, DATASET_NAME, 5927 POOL_CHECK_SUSPENDED, B_FALSE, B_FALSE); 5928 5929 zfs_ioctl_register("destroy_bookmarks", ZFS_IOC_DESTROY_BOOKMARKS, 5930 zfs_ioc_destroy_bookmarks, zfs_secpolicy_destroy_bookmarks, 5931 POOL_NAME, 5932 POOL_CHECK_SUSPENDED | POOL_CHECK_READONLY, B_TRUE, B_TRUE); 5933 5934 zfs_ioctl_register("channel_program", ZFS_IOC_CHANNEL_PROGRAM, 5935 zfs_ioc_channel_program, zfs_secpolicy_config, 5936 POOL_NAME, POOL_CHECK_SUSPENDED | POOL_CHECK_READONLY, B_TRUE, 5937 B_TRUE); 5938 5939 zfs_ioctl_register("zpool_checkpoint", ZFS_IOC_POOL_CHECKPOINT, 5940 zfs_ioc_pool_checkpoint, zfs_secpolicy_config, POOL_NAME, 5941 POOL_CHECK_SUSPENDED | POOL_CHECK_READONLY, B_TRUE, B_TRUE); 5942 5943 zfs_ioctl_register("zpool_discard_checkpoint", 5944 ZFS_IOC_POOL_DISCARD_CHECKPOINT, zfs_ioc_pool_discard_checkpoint, 5945 zfs_secpolicy_config, POOL_NAME, 5946 POOL_CHECK_SUSPENDED | POOL_CHECK_READONLY, B_TRUE, B_TRUE); 5947 5948 zfs_ioctl_register("initialize", ZFS_IOC_POOL_INITIALIZE, 5949 zfs_ioc_pool_initialize, zfs_secpolicy_config, POOL_NAME, 5950 POOL_CHECK_SUSPENDED | POOL_CHECK_READONLY, B_TRUE, B_TRUE); 5951 5952 /* IOCTLS that use the legacy function signature */ 5953 5954 zfs_ioctl_register_legacy(ZFS_IOC_POOL_FREEZE, zfs_ioc_pool_freeze, 5955 zfs_secpolicy_config, NO_NAME, B_FALSE, POOL_CHECK_READONLY); 5956 5957 zfs_ioctl_register_pool(ZFS_IOC_POOL_CREATE, zfs_ioc_pool_create, 5958 zfs_secpolicy_config, B_TRUE, POOL_CHECK_NONE); 5959 zfs_ioctl_register_pool_modify(ZFS_IOC_POOL_SCAN, 5960 zfs_ioc_pool_scan); 5961 zfs_ioctl_register_pool_modify(ZFS_IOC_POOL_UPGRADE, 5962 zfs_ioc_pool_upgrade); 5963 zfs_ioctl_register_pool_modify(ZFS_IOC_VDEV_ADD, 5964 zfs_ioc_vdev_add); 5965 zfs_ioctl_register_pool_modify(ZFS_IOC_VDEV_REMOVE, 5966 zfs_ioc_vdev_remove); 5967 zfs_ioctl_register_pool_modify(ZFS_IOC_VDEV_SET_STATE, 5968 zfs_ioc_vdev_set_state); 5969 zfs_ioctl_register_pool_modify(ZFS_IOC_VDEV_ATTACH, 5970 zfs_ioc_vdev_attach); 5971 zfs_ioctl_register_pool_modify(ZFS_IOC_VDEV_DETACH, 5972 zfs_ioc_vdev_detach); 5973 zfs_ioctl_register_pool_modify(ZFS_IOC_VDEV_SETPATH, 5974 zfs_ioc_vdev_setpath); 5975 zfs_ioctl_register_pool_modify(ZFS_IOC_VDEV_SETFRU, 5976 zfs_ioc_vdev_setfru); 5977 zfs_ioctl_register_pool_modify(ZFS_IOC_POOL_SET_PROPS, 5978 zfs_ioc_pool_set_props); 5979 zfs_ioctl_register_pool_modify(ZFS_IOC_VDEV_SPLIT, 5980 zfs_ioc_vdev_split); 5981 zfs_ioctl_register_pool_modify(ZFS_IOC_POOL_REGUID, 5982 zfs_ioc_pool_reguid); 5983 5984 zfs_ioctl_register_pool_meta(ZFS_IOC_POOL_CONFIGS, 5985 zfs_ioc_pool_configs, zfs_secpolicy_none); 5986 zfs_ioctl_register_pool_meta(ZFS_IOC_POOL_TRYIMPORT, 5987 zfs_ioc_pool_tryimport, zfs_secpolicy_config); 5988 zfs_ioctl_register_pool_meta(ZFS_IOC_INJECT_FAULT, 5989 zfs_ioc_inject_fault, zfs_secpolicy_inject); 5990 zfs_ioctl_register_pool_meta(ZFS_IOC_CLEAR_FAULT, 5991 zfs_ioc_clear_fault, zfs_secpolicy_inject); 5992 zfs_ioctl_register_pool_meta(ZFS_IOC_INJECT_LIST_NEXT, 5993 zfs_ioc_inject_list_next, zfs_secpolicy_inject); 5994 5995 /* 5996 * pool destroy, and export don't log the history as part of 5997 * zfsdev_ioctl, but rather zfs_ioc_pool_export 5998 * does the logging of those commands. 5999 */ 6000 zfs_ioctl_register_pool(ZFS_IOC_POOL_DESTROY, zfs_ioc_pool_destroy, 6001 zfs_secpolicy_config, B_FALSE, POOL_CHECK_NONE); 6002 zfs_ioctl_register_pool(ZFS_IOC_POOL_EXPORT, zfs_ioc_pool_export, 6003 zfs_secpolicy_config, B_FALSE, POOL_CHECK_NONE); 6004 6005 zfs_ioctl_register_pool(ZFS_IOC_POOL_STATS, zfs_ioc_pool_stats, 6006 zfs_secpolicy_read, B_FALSE, POOL_CHECK_NONE); 6007 zfs_ioctl_register_pool(ZFS_IOC_POOL_GET_PROPS, zfs_ioc_pool_get_props, 6008 zfs_secpolicy_read, B_FALSE, POOL_CHECK_NONE); 6009 6010 zfs_ioctl_register_pool(ZFS_IOC_ERROR_LOG, zfs_ioc_error_log, 6011 zfs_secpolicy_inject, B_FALSE, POOL_CHECK_SUSPENDED); 6012 zfs_ioctl_register_pool(ZFS_IOC_DSOBJ_TO_DSNAME, 6013 zfs_ioc_dsobj_to_dsname, 6014 zfs_secpolicy_diff, B_FALSE, POOL_CHECK_SUSPENDED); 6015 zfs_ioctl_register_pool(ZFS_IOC_POOL_GET_HISTORY, 6016 zfs_ioc_pool_get_history, 6017 zfs_secpolicy_config, B_FALSE, POOL_CHECK_SUSPENDED); 6018 6019 zfs_ioctl_register_pool(ZFS_IOC_POOL_IMPORT, zfs_ioc_pool_import, 6020 zfs_secpolicy_config, B_TRUE, POOL_CHECK_NONE); 6021 6022 zfs_ioctl_register_pool(ZFS_IOC_CLEAR, zfs_ioc_clear, 6023 zfs_secpolicy_config, B_TRUE, POOL_CHECK_READONLY); 6024 zfs_ioctl_register_pool(ZFS_IOC_POOL_REOPEN, zfs_ioc_pool_reopen, 6025 zfs_secpolicy_config, B_TRUE, POOL_CHECK_SUSPENDED); 6026 6027 zfs_ioctl_register_dataset_read(ZFS_IOC_SPACE_WRITTEN, 6028 zfs_ioc_space_written); 6029 zfs_ioctl_register_dataset_read(ZFS_IOC_OBJSET_RECVD_PROPS, 6030 zfs_ioc_objset_recvd_props); 6031 zfs_ioctl_register_dataset_read(ZFS_IOC_NEXT_OBJ, 6032 zfs_ioc_next_obj); 6033 zfs_ioctl_register_dataset_read(ZFS_IOC_GET_FSACL, 6034 zfs_ioc_get_fsacl); 6035 zfs_ioctl_register_dataset_read(ZFS_IOC_OBJSET_STATS, 6036 zfs_ioc_objset_stats); 6037 zfs_ioctl_register_dataset_read(ZFS_IOC_OBJSET_ZPLPROPS, 6038 zfs_ioc_objset_zplprops); 6039 zfs_ioctl_register_dataset_read(ZFS_IOC_DATASET_LIST_NEXT, 6040 zfs_ioc_dataset_list_next); 6041 zfs_ioctl_register_dataset_read(ZFS_IOC_SNAPSHOT_LIST_NEXT, 6042 zfs_ioc_snapshot_list_next); 6043 zfs_ioctl_register_dataset_read(ZFS_IOC_SEND_PROGRESS, 6044 zfs_ioc_send_progress); 6045 6046 zfs_ioctl_register_dataset_read_secpolicy(ZFS_IOC_DIFF, 6047 zfs_ioc_diff, zfs_secpolicy_diff); 6048 zfs_ioctl_register_dataset_read_secpolicy(ZFS_IOC_OBJ_TO_STATS, 6049 zfs_ioc_obj_to_stats, zfs_secpolicy_diff); 6050 zfs_ioctl_register_dataset_read_secpolicy(ZFS_IOC_OBJ_TO_PATH, 6051 zfs_ioc_obj_to_path, zfs_secpolicy_diff); 6052 zfs_ioctl_register_dataset_read_secpolicy(ZFS_IOC_USERSPACE_ONE, 6053 zfs_ioc_userspace_one, zfs_secpolicy_userspace_one); 6054 zfs_ioctl_register_dataset_read_secpolicy(ZFS_IOC_USERSPACE_MANY, 6055 zfs_ioc_userspace_many, zfs_secpolicy_userspace_many); 6056 zfs_ioctl_register_dataset_read_secpolicy(ZFS_IOC_SEND, 6057 zfs_ioc_send, zfs_secpolicy_send); 6058 6059 zfs_ioctl_register_dataset_modify(ZFS_IOC_SET_PROP, zfs_ioc_set_prop, 6060 zfs_secpolicy_none); 6061 zfs_ioctl_register_dataset_modify(ZFS_IOC_DESTROY, zfs_ioc_destroy, 6062 zfs_secpolicy_destroy); 6063 zfs_ioctl_register_dataset_modify(ZFS_IOC_RENAME, zfs_ioc_rename, 6064 zfs_secpolicy_rename); 6065 zfs_ioctl_register_dataset_modify(ZFS_IOC_RECV, zfs_ioc_recv, 6066 zfs_secpolicy_recv); 6067 zfs_ioctl_register_dataset_modify(ZFS_IOC_PROMOTE, zfs_ioc_promote, 6068 zfs_secpolicy_promote); 6069 zfs_ioctl_register_dataset_modify(ZFS_IOC_INHERIT_PROP, 6070 zfs_ioc_inherit_prop, zfs_secpolicy_inherit_prop); 6071 zfs_ioctl_register_dataset_modify(ZFS_IOC_SET_FSACL, zfs_ioc_set_fsacl, 6072 zfs_secpolicy_set_fsacl); 6073 6074 zfs_ioctl_register_dataset_nolog(ZFS_IOC_SHARE, zfs_ioc_share, 6075 zfs_secpolicy_share, POOL_CHECK_NONE); 6076 zfs_ioctl_register_dataset_nolog(ZFS_IOC_SMB_ACL, zfs_ioc_smb_acl, 6077 zfs_secpolicy_smb_acl, POOL_CHECK_NONE); 6078 zfs_ioctl_register_dataset_nolog(ZFS_IOC_USERSPACE_UPGRADE, 6079 zfs_ioc_userspace_upgrade, zfs_secpolicy_userspace_upgrade, 6080 POOL_CHECK_SUSPENDED | POOL_CHECK_READONLY); 6081 zfs_ioctl_register_dataset_nolog(ZFS_IOC_TMP_SNAPSHOT, 6082 zfs_ioc_tmp_snapshot, zfs_secpolicy_tmp_snapshot, 6083 POOL_CHECK_SUSPENDED | POOL_CHECK_READONLY); 6084 } 6085 6086 int 6087 pool_status_check(const char *name, zfs_ioc_namecheck_t type, 6088 zfs_ioc_poolcheck_t check) 6089 { 6090 spa_t *spa; 6091 int error; 6092 6093 ASSERT(type == POOL_NAME || type == DATASET_NAME); 6094 6095 if (check & POOL_CHECK_NONE) 6096 return (0); 6097 6098 error = spa_open(name, &spa, FTAG); 6099 if (error == 0) { 6100 if ((check & POOL_CHECK_SUSPENDED) && spa_suspended(spa)) 6101 error = SET_ERROR(EAGAIN); 6102 else if ((check & POOL_CHECK_READONLY) && !spa_writeable(spa)) 6103 error = SET_ERROR(EROFS); 6104 spa_close(spa, FTAG); 6105 } 6106 return (error); 6107 } 6108 6109 /* 6110 * Find a free minor number. 6111 */ 6112 minor_t 6113 zfsdev_minor_alloc(void) 6114 { 6115 static minor_t last_minor; 6116 minor_t m; 6117 6118 ASSERT(MUTEX_HELD(&zfsdev_state_lock)); 6119 6120 for (m = last_minor + 1; m != last_minor; m++) { 6121 if (m > ZFSDEV_MAX_MINOR) 6122 m = 1; 6123 if (ddi_get_soft_state(zfsdev_state, m) == NULL) { 6124 last_minor = m; 6125 return (m); 6126 } 6127 } 6128 6129 return (0); 6130 } 6131 6132 static int 6133 zfs_ctldev_init(dev_t *devp) 6134 { 6135 minor_t minor; 6136 zfs_soft_state_t *zs; 6137 6138 ASSERT(MUTEX_HELD(&zfsdev_state_lock)); 6139 ASSERT(getminor(*devp) == 0); 6140 6141 minor = zfsdev_minor_alloc(); 6142 if (minor == 0) 6143 return (SET_ERROR(ENXIO)); 6144 6145 if (ddi_soft_state_zalloc(zfsdev_state, minor) != DDI_SUCCESS) 6146 return (SET_ERROR(EAGAIN)); 6147 6148 *devp = makedevice(getemajor(*devp), minor); 6149 6150 zs = ddi_get_soft_state(zfsdev_state, minor); 6151 zs->zss_type = ZSST_CTLDEV; 6152 zfs_onexit_init((zfs_onexit_t **)&zs->zss_data); 6153 6154 return (0); 6155 } 6156 6157 static void 6158 zfs_ctldev_destroy(zfs_onexit_t *zo, minor_t minor) 6159 { 6160 ASSERT(MUTEX_HELD(&zfsdev_state_lock)); 6161 6162 zfs_onexit_destroy(zo); 6163 ddi_soft_state_free(zfsdev_state, minor); 6164 } 6165 6166 void * 6167 zfsdev_get_soft_state(minor_t minor, enum zfs_soft_state_type which) 6168 { 6169 zfs_soft_state_t *zp; 6170 6171 zp = ddi_get_soft_state(zfsdev_state, minor); 6172 if (zp == NULL || zp->zss_type != which) 6173 return (NULL); 6174 6175 return (zp->zss_data); 6176 } 6177 6178 static int 6179 zfsdev_open(dev_t *devp, int flag, int otyp, cred_t *cr) 6180 { 6181 int error = 0; 6182 6183 if (getminor(*devp) != 0) 6184 return (zvol_open(devp, flag, otyp, cr)); 6185 6186 /* This is the control device. Allocate a new minor if requested. */ 6187 if (flag & FEXCL) { 6188 mutex_enter(&zfsdev_state_lock); 6189 error = zfs_ctldev_init(devp); 6190 mutex_exit(&zfsdev_state_lock); 6191 } 6192 6193 return (error); 6194 } 6195 6196 static int 6197 zfsdev_close(dev_t dev, int flag, int otyp, cred_t *cr) 6198 { 6199 zfs_onexit_t *zo; 6200 minor_t minor = getminor(dev); 6201 6202 if (minor == 0) 6203 return (0); 6204 6205 mutex_enter(&zfsdev_state_lock); 6206 zo = zfsdev_get_soft_state(minor, ZSST_CTLDEV); 6207 if (zo == NULL) { 6208 mutex_exit(&zfsdev_state_lock); 6209 return (zvol_close(dev, flag, otyp, cr)); 6210 } 6211 zfs_ctldev_destroy(zo, minor); 6212 mutex_exit(&zfsdev_state_lock); 6213 6214 return (0); 6215 } 6216 6217 static int 6218 zfsdev_ioctl(dev_t dev, int cmd, intptr_t arg, int flag, cred_t *cr, int *rvalp) 6219 { 6220 zfs_cmd_t *zc; 6221 uint_t vecnum; 6222 int error, rc, len; 6223 minor_t minor = getminor(dev); 6224 const zfs_ioc_vec_t *vec; 6225 char *saved_poolname = NULL; 6226 nvlist_t *innvl = NULL; 6227 6228 if (minor != 0 && 6229 zfsdev_get_soft_state(minor, ZSST_CTLDEV) == NULL) 6230 return (zvol_ioctl(dev, cmd, arg, flag, cr, rvalp)); 6231 6232 vecnum = cmd - ZFS_IOC_FIRST; 6233 ASSERT3U(getmajor(dev), ==, ddi_driver_major(zfs_dip)); 6234 6235 if (vecnum >= sizeof (zfs_ioc_vec) / sizeof (zfs_ioc_vec[0])) 6236 return (SET_ERROR(EINVAL)); 6237 vec = &zfs_ioc_vec[vecnum]; 6238 6239 zc = kmem_zalloc(sizeof (zfs_cmd_t), KM_SLEEP); 6240 6241 error = ddi_copyin((void *)arg, zc, sizeof (zfs_cmd_t), flag); 6242 if (error != 0) { 6243 error = SET_ERROR(EFAULT); 6244 goto out; 6245 } 6246 6247 zc->zc_iflags = flag & FKIOCTL; 6248 if (zc->zc_nvlist_src_size != 0) { 6249 error = get_nvlist(zc->zc_nvlist_src, zc->zc_nvlist_src_size, 6250 zc->zc_iflags, &innvl); 6251 if (error != 0) 6252 goto out; 6253 } 6254 6255 /* 6256 * Ensure that all pool/dataset names are valid before we pass down to 6257 * the lower layers. 6258 */ 6259 zc->zc_name[sizeof (zc->zc_name) - 1] = '\0'; 6260 switch (vec->zvec_namecheck) { 6261 case POOL_NAME: 6262 if (pool_namecheck(zc->zc_name, NULL, NULL) != 0) 6263 error = SET_ERROR(EINVAL); 6264 else 6265 error = pool_status_check(zc->zc_name, 6266 vec->zvec_namecheck, vec->zvec_pool_check); 6267 break; 6268 6269 case DATASET_NAME: 6270 if (dataset_namecheck(zc->zc_name, NULL, NULL) != 0) 6271 error = SET_ERROR(EINVAL); 6272 else 6273 error = pool_status_check(zc->zc_name, 6274 vec->zvec_namecheck, vec->zvec_pool_check); 6275 break; 6276 6277 case NO_NAME: 6278 break; 6279 } 6280 6281 6282 if (error == 0) 6283 error = vec->zvec_secpolicy(zc, innvl, cr); 6284 6285 if (error != 0) 6286 goto out; 6287 6288 /* legacy ioctls can modify zc_name */ 6289 len = strcspn(zc->zc_name, "/@#") + 1; 6290 saved_poolname = kmem_alloc(len, KM_SLEEP); 6291 (void) strlcpy(saved_poolname, zc->zc_name, len); 6292 6293 if (vec->zvec_func != NULL) { 6294 nvlist_t *outnvl; 6295 int puterror = 0; 6296 spa_t *spa; 6297 nvlist_t *lognv = NULL; 6298 6299 ASSERT(vec->zvec_legacy_func == NULL); 6300 6301 /* 6302 * Add the innvl to the lognv before calling the func, 6303 * in case the func changes the innvl. 6304 */ 6305 if (vec->zvec_allow_log) { 6306 lognv = fnvlist_alloc(); 6307 fnvlist_add_string(lognv, ZPOOL_HIST_IOCTL, 6308 vec->zvec_name); 6309 if (!nvlist_empty(innvl)) { 6310 fnvlist_add_nvlist(lognv, ZPOOL_HIST_INPUT_NVL, 6311 innvl); 6312 } 6313 } 6314 6315 outnvl = fnvlist_alloc(); 6316 error = vec->zvec_func(zc->zc_name, innvl, outnvl); 6317 6318 /* 6319 * Some commands can partially execute, modfiy state, and still 6320 * return an error. In these cases, attempt to record what 6321 * was modified. 6322 */ 6323 if ((error == 0 || 6324 (cmd == ZFS_IOC_CHANNEL_PROGRAM && error != EINVAL)) && 6325 vec->zvec_allow_log && 6326 spa_open(zc->zc_name, &spa, FTAG) == 0) { 6327 if (!nvlist_empty(outnvl)) { 6328 fnvlist_add_nvlist(lognv, ZPOOL_HIST_OUTPUT_NVL, 6329 outnvl); 6330 } 6331 if (error != 0) { 6332 fnvlist_add_int64(lognv, ZPOOL_HIST_ERRNO, 6333 error); 6334 } 6335 (void) spa_history_log_nvl(spa, lognv); 6336 spa_close(spa, FTAG); 6337 } 6338 fnvlist_free(lognv); 6339 6340 if (!nvlist_empty(outnvl) || zc->zc_nvlist_dst_size != 0) { 6341 int smusherror = 0; 6342 if (vec->zvec_smush_outnvlist) { 6343 smusherror = nvlist_smush(outnvl, 6344 zc->zc_nvlist_dst_size); 6345 } 6346 if (smusherror == 0) 6347 puterror = put_nvlist(zc, outnvl); 6348 } 6349 6350 if (puterror != 0) 6351 error = puterror; 6352 6353 nvlist_free(outnvl); 6354 } else { 6355 error = vec->zvec_legacy_func(zc); 6356 } 6357 6358 out: 6359 nvlist_free(innvl); 6360 rc = ddi_copyout(zc, (void *)arg, sizeof (zfs_cmd_t), flag); 6361 if (error == 0 && rc != 0) 6362 error = SET_ERROR(EFAULT); 6363 if (error == 0 && vec->zvec_allow_log) { 6364 char *s = tsd_get(zfs_allow_log_key); 6365 if (s != NULL) 6366 strfree(s); 6367 (void) tsd_set(zfs_allow_log_key, saved_poolname); 6368 } else { 6369 if (saved_poolname != NULL) 6370 strfree(saved_poolname); 6371 } 6372 6373 kmem_free(zc, sizeof (zfs_cmd_t)); 6374 return (error); 6375 } 6376 6377 static int 6378 zfs_attach(dev_info_t *dip, ddi_attach_cmd_t cmd) 6379 { 6380 if (cmd != DDI_ATTACH) 6381 return (DDI_FAILURE); 6382 6383 if (ddi_create_minor_node(dip, "zfs", S_IFCHR, 0, 6384 DDI_PSEUDO, 0) == DDI_FAILURE) 6385 return (DDI_FAILURE); 6386 6387 zfs_dip = dip; 6388 6389 ddi_report_dev(dip); 6390 6391 return (DDI_SUCCESS); 6392 } 6393 6394 static int 6395 zfs_detach(dev_info_t *dip, ddi_detach_cmd_t cmd) 6396 { 6397 if (spa_busy() || zfs_busy() || zvol_busy()) 6398 return (DDI_FAILURE); 6399 6400 if (cmd != DDI_DETACH) 6401 return (DDI_FAILURE); 6402 6403 zfs_dip = NULL; 6404 6405 ddi_prop_remove_all(dip); 6406 ddi_remove_minor_node(dip, NULL); 6407 6408 return (DDI_SUCCESS); 6409 } 6410 6411 /*ARGSUSED*/ 6412 static int 6413 zfs_info(dev_info_t *dip, ddi_info_cmd_t infocmd, void *arg, void **result) 6414 { 6415 switch (infocmd) { 6416 case DDI_INFO_DEVT2DEVINFO: 6417 *result = zfs_dip; 6418 return (DDI_SUCCESS); 6419 6420 case DDI_INFO_DEVT2INSTANCE: 6421 *result = (void *)0; 6422 return (DDI_SUCCESS); 6423 } 6424 6425 return (DDI_FAILURE); 6426 } 6427 6428 /* 6429 * OK, so this is a little weird. 6430 * 6431 * /dev/zfs is the control node, i.e. minor 0. 6432 * /dev/zvol/[r]dsk/pool/dataset are the zvols, minor > 0. 6433 * 6434 * /dev/zfs has basically nothing to do except serve up ioctls, 6435 * so most of the standard driver entry points are in zvol.c. 6436 */ 6437 static struct cb_ops zfs_cb_ops = { 6438 zfsdev_open, /* open */ 6439 zfsdev_close, /* close */ 6440 zvol_strategy, /* strategy */ 6441 nodev, /* print */ 6442 zvol_dump, /* dump */ 6443 zvol_read, /* read */ 6444 zvol_write, /* write */ 6445 zfsdev_ioctl, /* ioctl */ 6446 nodev, /* devmap */ 6447 nodev, /* mmap */ 6448 nodev, /* segmap */ 6449 nochpoll, /* poll */ 6450 ddi_prop_op, /* prop_op */ 6451 NULL, /* streamtab */ 6452 D_NEW | D_MP | D_64BIT, /* Driver compatibility flag */ 6453 CB_REV, /* version */ 6454 nodev, /* async read */ 6455 nodev, /* async write */ 6456 }; 6457 6458 static struct dev_ops zfs_dev_ops = { 6459 DEVO_REV, /* version */ 6460 0, /* refcnt */ 6461 zfs_info, /* info */ 6462 nulldev, /* identify */ 6463 nulldev, /* probe */ 6464 zfs_attach, /* attach */ 6465 zfs_detach, /* detach */ 6466 nodev, /* reset */ 6467 &zfs_cb_ops, /* driver operations */ 6468 NULL, /* no bus operations */ 6469 NULL, /* power */ 6470 ddi_quiesce_not_needed, /* quiesce */ 6471 }; 6472 6473 static struct modldrv zfs_modldrv = { 6474 &mod_driverops, 6475 "ZFS storage pool", 6476 &zfs_dev_ops 6477 }; 6478 6479 static struct modlinkage modlinkage = { 6480 MODREV_1, 6481 (void *)&zfs_modlfs, 6482 (void *)&zfs_modldrv, 6483 NULL 6484 }; 6485 6486 static void 6487 zfs_allow_log_destroy(void *arg) 6488 { 6489 char *poolname = arg; 6490 strfree(poolname); 6491 } 6492 6493 int 6494 _init(void) 6495 { 6496 int error; 6497 6498 spa_init(FREAD | FWRITE); 6499 zfs_init(); 6500 zvol_init(); 6501 zfs_ioctl_init(); 6502 6503 if ((error = mod_install(&modlinkage)) != 0) { 6504 zvol_fini(); 6505 zfs_fini(); 6506 spa_fini(); 6507 return (error); 6508 } 6509 6510 tsd_create(&zfs_fsyncer_key, NULL); 6511 tsd_create(&rrw_tsd_key, rrw_tsd_destroy); 6512 tsd_create(&zfs_allow_log_key, zfs_allow_log_destroy); 6513 6514 error = ldi_ident_from_mod(&modlinkage, &zfs_li); 6515 ASSERT(error == 0); 6516 mutex_init(&zfs_share_lock, NULL, MUTEX_DEFAULT, NULL); 6517 6518 return (0); 6519 } 6520 6521 int 6522 _fini(void) 6523 { 6524 int error; 6525 6526 if (spa_busy() || zfs_busy() || zvol_busy() || zio_injection_enabled) 6527 return (SET_ERROR(EBUSY)); 6528 6529 if ((error = mod_remove(&modlinkage)) != 0) 6530 return (error); 6531 6532 zvol_fini(); 6533 zfs_fini(); 6534 spa_fini(); 6535 if (zfs_nfsshare_inited) 6536 (void) ddi_modclose(nfs_mod); 6537 if (zfs_smbshare_inited) 6538 (void) ddi_modclose(smbsrv_mod); 6539 if (zfs_nfsshare_inited || zfs_smbshare_inited) 6540 (void) ddi_modclose(sharefs_mod); 6541 6542 tsd_destroy(&zfs_fsyncer_key); 6543 ldi_ident_release(zfs_li); 6544 zfs_li = NULL; 6545 mutex_destroy(&zfs_share_lock); 6546 6547 return (error); 6548 } 6549 6550 int 6551 _info(struct modinfo *modinfop) 6552 { 6553 return (mod_info(&modlinkage, modinfop)); 6554 } 6555