zfs_ioctl.c revision 190878
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 * Copyright 2008 Sun Microsystems, Inc. All rights reserved. 23 * Use is subject to license terms. 24 */ 25 26#include <sys/types.h> 27#include <sys/param.h> 28#include <sys/systm.h> 29#include <sys/conf.h> 30#include <sys/kernel.h> 31#include <sys/lock.h> 32#include <sys/malloc.h> 33#include <sys/mutex.h> 34#include <sys/proc.h> 35#include <sys/errno.h> 36#include <sys/uio.h> 37#include <sys/buf.h> 38#include <sys/file.h> 39#include <sys/kmem.h> 40#include <sys/conf.h> 41#include <sys/cmn_err.h> 42#include <sys/stat.h> 43#include <sys/zfs_ioctl.h> 44#include <sys/zfs_znode.h> 45#include <sys/zap.h> 46#include <sys/spa.h> 47#include <sys/spa_impl.h> 48#include <sys/vdev.h> 49#include <sys/vdev_impl.h> 50#include <sys/dmu.h> 51#include <sys/dsl_dir.h> 52#include <sys/dsl_dataset.h> 53#include <sys/dsl_prop.h> 54#include <sys/dsl_deleg.h> 55#include <sys/dmu_objset.h> 56#include <sys/sunddi.h> 57#include <sys/policy.h> 58#include <sys/zone.h> 59#include <sys/nvpair.h> 60#include <sys/mount.h> 61#include <sys/taskqueue.h> 62#include <sys/sdt.h> 63#include <sys/varargs.h> 64#include <sys/fs/zfs.h> 65#include <sys/zfs_ctldir.h> 66#include <sys/zfs_dir.h> 67#include <sys/zvol.h> 68#include <sys/dmu_objset.h> 69 70#include "zfs_namecheck.h" 71#include "zfs_prop.h" 72#include "zfs_deleg.h" 73 74CTASSERT(sizeof(zfs_cmd_t) <= PAGE_SIZE); 75 76static struct cdev *zfsdev; 77 78extern void zfs_init(void); 79extern void zfs_fini(void); 80 81typedef int zfs_ioc_func_t(zfs_cmd_t *); 82typedef int zfs_secpolicy_func_t(zfs_cmd_t *, cred_t *); 83 84typedef struct zfs_ioc_vec { 85 zfs_ioc_func_t *zvec_func; 86 zfs_secpolicy_func_t *zvec_secpolicy; 87 enum { 88 NO_NAME, 89 POOL_NAME, 90 DATASET_NAME 91 } zvec_namecheck; 92 boolean_t zvec_his_log; 93} zfs_ioc_vec_t; 94 95static void clear_props(char *dataset, nvlist_t *props); 96static int zfs_fill_zplprops_root(uint64_t, nvlist_t *, nvlist_t *, 97 boolean_t *); 98int zfs_set_prop_nvlist(const char *, nvlist_t *); 99 100/* _NOTE(PRINTFLIKE(4)) - this is printf-like, but lint is too whiney */ 101void 102__dprintf(const char *file, const char *func, int line, const char *fmt, ...) 103{ 104 const char *newfile; 105 char buf[256]; 106 va_list adx; 107 108 /* 109 * Get rid of annoying "../common/" prefix to filename. 110 */ 111 newfile = strrchr(file, '/'); 112 if (newfile != NULL) { 113 newfile = newfile + 1; /* Get rid of leading / */ 114 } else { 115 newfile = file; 116 } 117 118 va_start(adx, fmt); 119 (void) vsnprintf(buf, sizeof (buf), fmt, adx); 120 va_end(adx); 121 122 /* 123 * To get this data, use the zfs-dprintf probe as so: 124 * dtrace -q -n 'zfs-dprintf \ 125 * /stringof(arg0) == "dbuf.c"/ \ 126 * {printf("%s: %s", stringof(arg1), stringof(arg3))}' 127 * arg0 = file name 128 * arg1 = function name 129 * arg2 = line number 130 * arg3 = message 131 */ 132 DTRACE_PROBE4(zfs__dprintf, 133 char *, newfile, char *, func, int, line, char *, buf); 134} 135 136static void 137history_str_free(char *buf) 138{ 139 kmem_free(buf, HIS_MAX_RECORD_LEN); 140} 141 142static char * 143history_str_get(zfs_cmd_t *zc) 144{ 145 char *buf; 146 147 if (zc->zc_history == 0) 148 return (NULL); 149 150 buf = kmem_alloc(HIS_MAX_RECORD_LEN, KM_SLEEP); 151 if (copyinstr((void *)(uintptr_t)zc->zc_history, 152 buf, HIS_MAX_RECORD_LEN, NULL) != 0) { 153 history_str_free(buf); 154 return (NULL); 155 } 156 157 buf[HIS_MAX_RECORD_LEN -1] = '\0'; 158 159 return (buf); 160} 161 162/* 163 * Check to see if the named dataset is currently defined as bootable 164 */ 165static boolean_t 166zfs_is_bootfs(const char *name) 167{ 168 spa_t *spa; 169 boolean_t ret = B_FALSE; 170 171 if (spa_open(name, &spa, FTAG) == 0) { 172 if (spa->spa_bootfs) { 173 objset_t *os; 174 175 if (dmu_objset_open(name, DMU_OST_ZFS, 176 DS_MODE_USER | DS_MODE_READONLY, &os) == 0) { 177 ret = (dmu_objset_id(os) == spa->spa_bootfs); 178 dmu_objset_close(os); 179 } 180 } 181 spa_close(spa, FTAG); 182 } 183 return (ret); 184} 185 186/* 187 * zfs_earlier_version 188 * 189 * Return non-zero if the spa version is less than requested version. 190 */ 191static int 192zfs_earlier_version(const char *name, int version) 193{ 194 spa_t *spa; 195 196 if (spa_open(name, &spa, FTAG) == 0) { 197 if (spa_version(spa) < version) { 198 spa_close(spa, FTAG); 199 return (1); 200 } 201 spa_close(spa, FTAG); 202 } 203 return (0); 204} 205 206/* 207 * zpl_earlier_version 208 * 209 * Return TRUE if the ZPL version is less than requested version. 210 */ 211static boolean_t 212zpl_earlier_version(const char *name, int version) 213{ 214 objset_t *os; 215 boolean_t rc = B_TRUE; 216 217 if (dmu_objset_open(name, DMU_OST_ANY, 218 DS_MODE_USER | DS_MODE_READONLY, &os) == 0) { 219 uint64_t zplversion; 220 221 if (zfs_get_zplprop(os, ZFS_PROP_VERSION, &zplversion) == 0) 222 rc = zplversion < version; 223 dmu_objset_close(os); 224 } 225 return (rc); 226} 227 228static void 229zfs_log_history(zfs_cmd_t *zc) 230{ 231 spa_t *spa; 232 char *buf; 233 234 if ((buf = history_str_get(zc)) == NULL) 235 return; 236 237 if (spa_open(zc->zc_name, &spa, FTAG) == 0) { 238 if (spa_version(spa) >= SPA_VERSION_ZPOOL_HISTORY) 239 (void) spa_history_log(spa, buf, LOG_CMD_NORMAL); 240 spa_close(spa, FTAG); 241 } 242 history_str_free(buf); 243} 244 245/* 246 * Policy for top-level read operations (list pools). Requires no privileges, 247 * and can be used in the local zone, as there is no associated dataset. 248 */ 249/* ARGSUSED */ 250static int 251zfs_secpolicy_none(zfs_cmd_t *zc, cred_t *cr) 252{ 253 return (0); 254} 255 256/* 257 * Policy for dataset read operations (list children, get statistics). Requires 258 * no privileges, but must be visible in the local zone. 259 */ 260/* ARGSUSED */ 261static int 262zfs_secpolicy_read(zfs_cmd_t *zc, cred_t *cr) 263{ 264 if (INGLOBALZONE(curthread) || 265 zone_dataset_visible(zc->zc_name, NULL)) 266 return (0); 267 268 return (ENOENT); 269} 270 271static int 272zfs_dozonecheck(const char *dataset, cred_t *cr) 273{ 274 uint64_t zoned; 275 int writable = 1; 276 277 /* 278 * The dataset must be visible by this zone -- check this first 279 * so they don't see EPERM on something they shouldn't know about. 280 */ 281 if (!INGLOBALZONE(curthread) && 282 !zone_dataset_visible(dataset, &writable)) 283 return (ENOENT); 284 285 if (dsl_prop_get_integer(dataset, "jailed", &zoned, NULL)) 286 return (ENOENT); 287 288 if (INGLOBALZONE(curthread)) { 289 /* 290 * If the fs is zoned, only root can access it from the 291 * global zone. 292 */ 293 if (secpolicy_zfs(cr) && zoned) 294 return (EPERM); 295 } else { 296 /* 297 * If we are in a local zone, the 'zoned' property must be set. 298 */ 299 if (!zoned) 300 return (EPERM); 301 302 /* must be writable by this zone */ 303 if (!writable) 304 return (EPERM); 305 } 306 return (0); 307} 308 309int 310zfs_secpolicy_write_perms(const char *name, const char *perm, cred_t *cr) 311{ 312 int error; 313 314 error = zfs_dozonecheck(name, cr); 315 if (error == 0) { 316 error = secpolicy_zfs(cr); 317 if (error) 318 error = dsl_deleg_access(name, perm, cr); 319 } 320 return (error); 321} 322 323static int 324zfs_secpolicy_setprop(const char *name, zfs_prop_t prop, cred_t *cr) 325{ 326 /* 327 * Check permissions for special properties. 328 */ 329 switch (prop) { 330 case ZFS_PROP_ZONED: 331 /* 332 * Disallow setting of 'zoned' from within a local zone. 333 */ 334 if (!INGLOBALZONE(curthread)) 335 return (EPERM); 336 break; 337 338 case ZFS_PROP_QUOTA: 339 if (!INGLOBALZONE(curthread)) { 340 uint64_t zoned; 341 char setpoint[MAXNAMELEN]; 342 /* 343 * Unprivileged users are allowed to modify the 344 * quota on things *under* (ie. contained by) 345 * the thing they own. 346 */ 347 if (dsl_prop_get_integer(name, "zoned", &zoned, 348 setpoint)) 349 return (EPERM); 350 if (!zoned || strlen(name) <= strlen(setpoint)) 351 return (EPERM); 352 } 353 break; 354 } 355 356 return (zfs_secpolicy_write_perms(name, zfs_prop_to_name(prop), cr)); 357} 358 359int 360zfs_secpolicy_fsacl(zfs_cmd_t *zc, cred_t *cr) 361{ 362 int error; 363 364 error = zfs_dozonecheck(zc->zc_name, cr); 365 if (error) 366 return (error); 367 368 /* 369 * permission to set permissions will be evaluated later in 370 * dsl_deleg_can_allow() 371 */ 372 return (0); 373} 374 375int 376zfs_secpolicy_rollback(zfs_cmd_t *zc, cred_t *cr) 377{ 378 int error; 379 error = zfs_secpolicy_write_perms(zc->zc_name, 380 ZFS_DELEG_PERM_ROLLBACK, cr); 381 if (error == 0) 382 error = zfs_secpolicy_write_perms(zc->zc_name, 383 ZFS_DELEG_PERM_MOUNT, cr); 384 return (error); 385} 386 387int 388zfs_secpolicy_send(zfs_cmd_t *zc, cred_t *cr) 389{ 390 return (zfs_secpolicy_write_perms(zc->zc_name, 391 ZFS_DELEG_PERM_SEND, cr)); 392} 393 394int 395zfs_secpolicy_share(zfs_cmd_t *zc, cred_t *cr) 396{ 397 if (!INGLOBALZONE(curthread)) 398 return (EPERM); 399 400 if (secpolicy_nfs(cr) == 0) { 401 return (0); 402 } else { 403 vnode_t *vp; 404 int error; 405 406 if ((error = lookupname(zc->zc_value, UIO_SYSSPACE, 407 NO_FOLLOW, NULL, &vp)) != 0) 408 return (error); 409 410 /* Now make sure mntpnt and dataset are ZFS */ 411 412 if (strcmp(vp->v_vfsp->mnt_stat.f_fstypename, "zfs") != 0 || 413 (strcmp((char *)refstr_value(vp->v_vfsp->vfs_resource), 414 zc->zc_name) != 0)) { 415 VN_RELE(vp); 416 return (EPERM); 417 } 418 419 VN_RELE(vp); 420 return (dsl_deleg_access(zc->zc_name, 421 ZFS_DELEG_PERM_SHARE, cr)); 422 } 423} 424 425static int 426zfs_get_parent(const char *datasetname, char *parent, int parentsize) 427{ 428 char *cp; 429 430 /* 431 * Remove the @bla or /bla from the end of the name to get the parent. 432 */ 433 (void) strncpy(parent, datasetname, parentsize); 434 cp = strrchr(parent, '@'); 435 if (cp != NULL) { 436 cp[0] = '\0'; 437 } else { 438 cp = strrchr(parent, '/'); 439 if (cp == NULL) 440 return (ENOENT); 441 cp[0] = '\0'; 442 } 443 444 return (0); 445} 446 447int 448zfs_secpolicy_destroy_perms(const char *name, cred_t *cr) 449{ 450 int error; 451 452 if ((error = zfs_secpolicy_write_perms(name, 453 ZFS_DELEG_PERM_MOUNT, cr)) != 0) 454 return (error); 455 456 return (zfs_secpolicy_write_perms(name, ZFS_DELEG_PERM_DESTROY, cr)); 457} 458 459static int 460zfs_secpolicy_destroy(zfs_cmd_t *zc, cred_t *cr) 461{ 462 return (zfs_secpolicy_destroy_perms(zc->zc_name, cr)); 463} 464 465/* 466 * Must have sys_config privilege to check the iscsi permission 467 */ 468/* ARGSUSED */ 469static int 470zfs_secpolicy_iscsi(zfs_cmd_t *zc, cred_t *cr) 471{ 472 return (secpolicy_zfs(cr)); 473} 474 475int 476zfs_secpolicy_rename_perms(const char *from, const char *to, cred_t *cr) 477{ 478 char parentname[MAXNAMELEN]; 479 int error; 480 481 if ((error = zfs_secpolicy_write_perms(from, 482 ZFS_DELEG_PERM_RENAME, cr)) != 0) 483 return (error); 484 485 if ((error = zfs_secpolicy_write_perms(from, 486 ZFS_DELEG_PERM_MOUNT, cr)) != 0) 487 return (error); 488 489 if ((error = zfs_get_parent(to, parentname, 490 sizeof (parentname))) != 0) 491 return (error); 492 493 if ((error = zfs_secpolicy_write_perms(parentname, 494 ZFS_DELEG_PERM_CREATE, cr)) != 0) 495 return (error); 496 497 if ((error = zfs_secpolicy_write_perms(parentname, 498 ZFS_DELEG_PERM_MOUNT, cr)) != 0) 499 return (error); 500 501 return (error); 502} 503 504static int 505zfs_secpolicy_rename(zfs_cmd_t *zc, cred_t *cr) 506{ 507 return (zfs_secpolicy_rename_perms(zc->zc_name, zc->zc_value, cr)); 508} 509 510static int 511zfs_secpolicy_promote(zfs_cmd_t *zc, cred_t *cr) 512{ 513 char parentname[MAXNAMELEN]; 514 objset_t *clone; 515 int error; 516 517 error = zfs_secpolicy_write_perms(zc->zc_name, 518 ZFS_DELEG_PERM_PROMOTE, cr); 519 if (error) 520 return (error); 521 522 error = dmu_objset_open(zc->zc_name, DMU_OST_ANY, 523 DS_MODE_USER | DS_MODE_READONLY, &clone); 524 525 if (error == 0) { 526 dsl_dataset_t *pclone = NULL; 527 dsl_dir_t *dd; 528 dd = clone->os->os_dsl_dataset->ds_dir; 529 530 rw_enter(&dd->dd_pool->dp_config_rwlock, RW_READER); 531 error = dsl_dataset_hold_obj(dd->dd_pool, 532 dd->dd_phys->dd_origin_obj, FTAG, &pclone); 533 rw_exit(&dd->dd_pool->dp_config_rwlock); 534 if (error) { 535 dmu_objset_close(clone); 536 return (error); 537 } 538 539 error = zfs_secpolicy_write_perms(zc->zc_name, 540 ZFS_DELEG_PERM_MOUNT, cr); 541 542 dsl_dataset_name(pclone, parentname); 543 dmu_objset_close(clone); 544 dsl_dataset_rele(pclone, FTAG); 545 if (error == 0) 546 error = zfs_secpolicy_write_perms(parentname, 547 ZFS_DELEG_PERM_PROMOTE, cr); 548 } 549 return (error); 550} 551 552static int 553zfs_secpolicy_receive(zfs_cmd_t *zc, cred_t *cr) 554{ 555 int error; 556 557 if ((error = zfs_secpolicy_write_perms(zc->zc_name, 558 ZFS_DELEG_PERM_RECEIVE, cr)) != 0) 559 return (error); 560 561 if ((error = zfs_secpolicy_write_perms(zc->zc_name, 562 ZFS_DELEG_PERM_MOUNT, cr)) != 0) 563 return (error); 564 565 return (zfs_secpolicy_write_perms(zc->zc_name, 566 ZFS_DELEG_PERM_CREATE, cr)); 567} 568 569int 570zfs_secpolicy_snapshot_perms(const char *name, cred_t *cr) 571{ 572 int error; 573 574 if ((error = zfs_secpolicy_write_perms(name, 575 ZFS_DELEG_PERM_SNAPSHOT, cr)) != 0) 576 return (error); 577 578 error = zfs_secpolicy_write_perms(name, 579 ZFS_DELEG_PERM_MOUNT, cr); 580 581 return (error); 582} 583 584static int 585zfs_secpolicy_snapshot(zfs_cmd_t *zc, cred_t *cr) 586{ 587 588 return (zfs_secpolicy_snapshot_perms(zc->zc_name, cr)); 589} 590 591static int 592zfs_secpolicy_create(zfs_cmd_t *zc, cred_t *cr) 593{ 594 char parentname[MAXNAMELEN]; 595 int error; 596 597 if ((error = zfs_get_parent(zc->zc_name, parentname, 598 sizeof (parentname))) != 0) 599 return (error); 600 601 if (zc->zc_value[0] != '\0') { 602 if ((error = zfs_secpolicy_write_perms(zc->zc_value, 603 ZFS_DELEG_PERM_CLONE, cr)) != 0) 604 return (error); 605 } 606 607 if ((error = zfs_secpolicy_write_perms(parentname, 608 ZFS_DELEG_PERM_CREATE, cr)) != 0) 609 return (error); 610 611 error = zfs_secpolicy_write_perms(parentname, 612 ZFS_DELEG_PERM_MOUNT, cr); 613 614 return (error); 615} 616 617static int 618zfs_secpolicy_umount(zfs_cmd_t *zc, cred_t *cr) 619{ 620 int error; 621 622 error = secpolicy_fs_unmount(cr, NULL); 623 if (error) { 624 error = dsl_deleg_access(zc->zc_name, ZFS_DELEG_PERM_MOUNT, cr); 625 } 626 return (error); 627} 628 629/* 630 * Policy for pool operations - create/destroy pools, add vdevs, etc. Requires 631 * SYS_CONFIG privilege, which is not available in a local zone. 632 */ 633/* ARGSUSED */ 634static int 635zfs_secpolicy_config(zfs_cmd_t *zc, cred_t *cr) 636{ 637 if (secpolicy_sys_config(cr, B_FALSE) != 0) 638 return (EPERM); 639 640 return (0); 641} 642 643/* 644 * Just like zfs_secpolicy_config, except that we will check for 645 * mount permission on the dataset for permission to create/remove 646 * the minor nodes. 647 */ 648static int 649zfs_secpolicy_minor(zfs_cmd_t *zc, cred_t *cr) 650{ 651 if (secpolicy_sys_config(cr, B_FALSE) != 0) { 652 return (dsl_deleg_access(zc->zc_name, 653 ZFS_DELEG_PERM_MOUNT, cr)); 654 } 655 656 return (0); 657} 658 659/* 660 * Policy for fault injection. Requires all privileges. 661 */ 662/* ARGSUSED */ 663static int 664zfs_secpolicy_inject(zfs_cmd_t *zc, cred_t *cr) 665{ 666 return (secpolicy_zinject(cr)); 667} 668 669static int 670zfs_secpolicy_inherit(zfs_cmd_t *zc, cred_t *cr) 671{ 672 zfs_prop_t prop = zfs_name_to_prop(zc->zc_value); 673 674 if (prop == ZPROP_INVAL) { 675 if (!zfs_prop_user(zc->zc_value)) 676 return (EINVAL); 677 return (zfs_secpolicy_write_perms(zc->zc_name, 678 ZFS_DELEG_PERM_USERPROP, cr)); 679 } else { 680 if (!zfs_prop_inheritable(prop)) 681 return (EINVAL); 682 return (zfs_secpolicy_setprop(zc->zc_name, prop, cr)); 683 } 684} 685 686/* 687 * Policy for dataset backup operations (sendbackup). 688 * Requires SYS_MOUNT privilege, and must be writable in the local zone. 689 */ 690static int 691zfs_secpolicy_operator(const char *dataset, cred_t *cr) 692{ 693 int writable = 1; 694 695 if (!INGLOBALZONE(curthread) && !zone_dataset_visible(dataset, &writable)) 696 return (ENOENT); 697 if (secpolicy_zfs(cr) != 0 && !groupmember(GID_OPERATOR, cr)) 698 return (EPERM); 699 return (0); 700} 701 702/* 703 * Returns the nvlist as specified by the user in the zfs_cmd_t. 704 */ 705static int 706get_nvlist(uint64_t nvl, uint64_t size, nvlist_t **nvp) 707{ 708 char *packed; 709 int error; 710 nvlist_t *list = NULL; 711 712 /* 713 * Read in and unpack the user-supplied nvlist. 714 */ 715 if (size == 0) 716 return (EINVAL); 717 718 packed = kmem_alloc(size, KM_SLEEP); 719 720 if ((error = xcopyin((void *)(uintptr_t)nvl, packed, size)) != 0) { 721 kmem_free(packed, size); 722 return (error); 723 } 724 725 if ((error = nvlist_unpack(packed, size, &list, 0)) != 0) { 726 kmem_free(packed, size); 727 return (error); 728 } 729 730 kmem_free(packed, size); 731 732 *nvp = list; 733 return (0); 734} 735 736static int 737put_nvlist(zfs_cmd_t *zc, nvlist_t *nvl) 738{ 739 char *packed = NULL; 740 size_t size; 741 int error; 742 743 VERIFY(nvlist_size(nvl, &size, NV_ENCODE_NATIVE) == 0); 744 745 if (size > zc->zc_nvlist_dst_size) { 746 /* 747 * Solaris returns ENOMEM here, because even if an error is 748 * returned from an ioctl(2), new zc_nvlist_dst_size will be 749 * passed to the userland. This is not the case for FreeBSD. 750 * We need to return 0, so the kernel will copy the 751 * zc_nvlist_dst_size back and the userland can discover that a 752 * bigger buffer is needed. 753 */ 754 error = 0; 755 } else { 756 packed = kmem_alloc(size, KM_SLEEP); 757 VERIFY(nvlist_pack(nvl, &packed, &size, NV_ENCODE_NATIVE, 758 KM_SLEEP) == 0); 759 error = xcopyout(packed, (void *)(uintptr_t)zc->zc_nvlist_dst, 760 size); 761 kmem_free(packed, size); 762 } 763 764 zc->zc_nvlist_dst_size = size; 765 return (error); 766} 767 768static int 769zfs_ioc_pool_create(zfs_cmd_t *zc) 770{ 771 int error; 772 nvlist_t *config, *props = NULL; 773 nvlist_t *rootprops = NULL; 774 nvlist_t *zplprops = NULL; 775 char *buf; 776 777 if (error = get_nvlist(zc->zc_nvlist_conf, zc->zc_nvlist_conf_size, 778 &config)) 779 return (error); 780 781 if (zc->zc_nvlist_src_size != 0 && (error = 782 get_nvlist(zc->zc_nvlist_src, zc->zc_nvlist_src_size, &props))) { 783 nvlist_free(config); 784 return (error); 785 } 786 787 if (props) { 788 nvlist_t *nvl = NULL; 789 uint64_t version = SPA_VERSION; 790 791 (void) nvlist_lookup_uint64(props, 792 zpool_prop_to_name(ZPOOL_PROP_VERSION), &version); 793 if (version < SPA_VERSION_INITIAL || version > SPA_VERSION) { 794 error = EINVAL; 795 goto pool_props_bad; 796 } 797 (void) nvlist_lookup_nvlist(props, ZPOOL_ROOTFS_PROPS, &nvl); 798 if (nvl) { 799 error = nvlist_dup(nvl, &rootprops, KM_SLEEP); 800 if (error != 0) { 801 nvlist_free(config); 802 nvlist_free(props); 803 return (error); 804 } 805 (void) nvlist_remove_all(props, ZPOOL_ROOTFS_PROPS); 806 } 807 VERIFY(nvlist_alloc(&zplprops, NV_UNIQUE_NAME, KM_SLEEP) == 0); 808 error = zfs_fill_zplprops_root(version, rootprops, 809 zplprops, NULL); 810 if (error) 811 goto pool_props_bad; 812 } 813 814 buf = history_str_get(zc); 815 816 error = spa_create(zc->zc_name, config, props, buf, zplprops); 817 818 /* 819 * Set the remaining root properties 820 */ 821 if (!error && 822 (error = zfs_set_prop_nvlist(zc->zc_name, rootprops)) != 0) 823 (void) spa_destroy(zc->zc_name); 824 825 if (buf != NULL) 826 history_str_free(buf); 827 828pool_props_bad: 829 nvlist_free(rootprops); 830 nvlist_free(zplprops); 831 nvlist_free(config); 832 nvlist_free(props); 833 834 return (error); 835} 836 837static int 838zfs_ioc_pool_destroy(zfs_cmd_t *zc) 839{ 840 int error; 841 zfs_log_history(zc); 842 error = spa_destroy(zc->zc_name); 843 return (error); 844} 845 846static int 847zfs_ioc_pool_import(zfs_cmd_t *zc) 848{ 849 int error; 850 nvlist_t *config, *props = NULL; 851 uint64_t guid; 852 853 if ((error = get_nvlist(zc->zc_nvlist_conf, zc->zc_nvlist_conf_size, 854 &config)) != 0) 855 return (error); 856 857 if (zc->zc_nvlist_src_size != 0 && (error = 858 get_nvlist(zc->zc_nvlist_src, zc->zc_nvlist_src_size, &props))) { 859 nvlist_free(config); 860 return (error); 861 } 862 863 if (nvlist_lookup_uint64(config, ZPOOL_CONFIG_POOL_GUID, &guid) != 0 || 864 guid != zc->zc_guid) 865 error = EINVAL; 866 else if (zc->zc_cookie) 867 error = spa_import_faulted(zc->zc_name, config, 868 props); 869 else 870 error = spa_import(zc->zc_name, config, props); 871 872 nvlist_free(config); 873 874 if (props) 875 nvlist_free(props); 876 877 return (error); 878} 879 880static int 881zfs_ioc_pool_export(zfs_cmd_t *zc) 882{ 883 int error; 884 boolean_t force = (boolean_t)zc->zc_cookie; 885 886 zfs_log_history(zc); 887 error = spa_export(zc->zc_name, NULL, force); 888 return (error); 889} 890 891static int 892zfs_ioc_pool_configs(zfs_cmd_t *zc) 893{ 894 nvlist_t *configs; 895 int error; 896 897 if ((configs = spa_all_configs(&zc->zc_cookie)) == NULL) 898 return (EEXIST); 899 900 error = put_nvlist(zc, configs); 901 902 nvlist_free(configs); 903 904 return (error); 905} 906 907static int 908zfs_ioc_pool_stats(zfs_cmd_t *zc) 909{ 910 nvlist_t *config; 911 int error; 912 int ret = 0; 913 914 error = spa_get_stats(zc->zc_name, &config, zc->zc_value, 915 sizeof (zc->zc_value)); 916 917 if (config != NULL) { 918 ret = put_nvlist(zc, config); 919 nvlist_free(config); 920 921 /* 922 * The config may be present even if 'error' is non-zero. 923 * In this case we return success, and preserve the real errno 924 * in 'zc_cookie'. 925 */ 926 zc->zc_cookie = error; 927 } else { 928 ret = error; 929 } 930 931 return (ret); 932} 933 934/* 935 * Try to import the given pool, returning pool stats as appropriate so that 936 * user land knows which devices are available and overall pool health. 937 */ 938static int 939zfs_ioc_pool_tryimport(zfs_cmd_t *zc) 940{ 941 nvlist_t *tryconfig, *config; 942 int error; 943 944 if ((error = get_nvlist(zc->zc_nvlist_conf, zc->zc_nvlist_conf_size, 945 &tryconfig)) != 0) 946 return (error); 947 948 config = spa_tryimport(tryconfig); 949 950 nvlist_free(tryconfig); 951 952 if (config == NULL) 953 return (EINVAL); 954 955 error = put_nvlist(zc, config); 956 nvlist_free(config); 957 958 return (error); 959} 960 961static int 962zfs_ioc_pool_scrub(zfs_cmd_t *zc) 963{ 964 spa_t *spa; 965 int error; 966 967 if ((error = spa_open(zc->zc_name, &spa, FTAG)) != 0) 968 return (error); 969 970 error = spa_scrub(spa, zc->zc_cookie); 971 972 spa_close(spa, FTAG); 973 974 return (error); 975} 976 977static int 978zfs_ioc_pool_freeze(zfs_cmd_t *zc) 979{ 980 spa_t *spa; 981 int error; 982 983 error = spa_open(zc->zc_name, &spa, FTAG); 984 if (error == 0) { 985 spa_freeze(spa); 986 spa_close(spa, FTAG); 987 } 988 return (error); 989} 990 991static int 992zfs_ioc_pool_upgrade(zfs_cmd_t *zc) 993{ 994 spa_t *spa; 995 int error; 996 997 if ((error = spa_open(zc->zc_name, &spa, FTAG)) != 0) 998 return (error); 999 1000 if (zc->zc_cookie < spa_version(spa) || zc->zc_cookie > SPA_VERSION) { 1001 spa_close(spa, FTAG); 1002 return (EINVAL); 1003 } 1004 1005 spa_upgrade(spa, zc->zc_cookie); 1006 spa_close(spa, FTAG); 1007 1008 return (error); 1009} 1010 1011static int 1012zfs_ioc_pool_get_history(zfs_cmd_t *zc) 1013{ 1014 spa_t *spa; 1015 char *hist_buf; 1016 uint64_t size; 1017 int error; 1018 1019 if ((size = zc->zc_history_len) == 0) 1020 return (EINVAL); 1021 1022 if ((error = spa_open(zc->zc_name, &spa, FTAG)) != 0) 1023 return (error); 1024 1025 if (spa_version(spa) < SPA_VERSION_ZPOOL_HISTORY) { 1026 spa_close(spa, FTAG); 1027 return (ENOTSUP); 1028 } 1029 1030 hist_buf = kmem_alloc(size, KM_SLEEP); 1031 if ((error = spa_history_get(spa, &zc->zc_history_offset, 1032 &zc->zc_history_len, hist_buf)) == 0) { 1033 error = xcopyout(hist_buf, 1034 (char *)(uintptr_t)zc->zc_history, 1035 zc->zc_history_len); 1036 } 1037 1038 spa_close(spa, FTAG); 1039 kmem_free(hist_buf, size); 1040 return (error); 1041} 1042 1043static int 1044zfs_ioc_dsobj_to_dsname(zfs_cmd_t *zc) 1045{ 1046 int error; 1047 1048 if (error = dsl_dsobj_to_dsname(zc->zc_name, zc->zc_obj, zc->zc_value)) 1049 return (error); 1050 1051 return (0); 1052} 1053 1054static int 1055zfs_ioc_obj_to_path(zfs_cmd_t *zc) 1056{ 1057 objset_t *osp; 1058 int error; 1059 1060 if ((error = dmu_objset_open(zc->zc_name, DMU_OST_ZFS, 1061 DS_MODE_USER | DS_MODE_READONLY, &osp)) != 0) 1062 return (error); 1063 error = zfs_obj_to_path(osp, zc->zc_obj, zc->zc_value, 1064 sizeof (zc->zc_value)); 1065 dmu_objset_close(osp); 1066 1067 return (error); 1068} 1069 1070static int 1071zfs_ioc_vdev_add(zfs_cmd_t *zc) 1072{ 1073 spa_t *spa; 1074 int error; 1075 nvlist_t *config, **l2cache, **spares; 1076 uint_t nl2cache = 0, nspares = 0; 1077 1078 error = spa_open(zc->zc_name, &spa, FTAG); 1079 if (error != 0) 1080 return (error); 1081 1082 error = get_nvlist(zc->zc_nvlist_conf, zc->zc_nvlist_conf_size, 1083 &config); 1084 (void) nvlist_lookup_nvlist_array(config, ZPOOL_CONFIG_L2CACHE, 1085 &l2cache, &nl2cache); 1086 1087 (void) nvlist_lookup_nvlist_array(config, ZPOOL_CONFIG_SPARES, 1088 &spares, &nspares); 1089 1090 /* 1091 * A root pool with concatenated devices is not supported. 1092 * Thus, can not add a device to a root pool. 1093 * 1094 * Intent log device can not be added to a rootpool because 1095 * during mountroot, zil is replayed, a seperated log device 1096 * can not be accessed during the mountroot time. 1097 * 1098 * l2cache and spare devices are ok to be added to a rootpool. 1099 */ 1100 if (spa->spa_bootfs != 0 && nl2cache == 0 && nspares == 0) { 1101 spa_close(spa, FTAG); 1102 return (EDOM); 1103 } 1104 1105 if (error == 0) { 1106 error = spa_vdev_add(spa, config); 1107 nvlist_free(config); 1108 } 1109 spa_close(spa, FTAG); 1110 return (error); 1111} 1112 1113static int 1114zfs_ioc_vdev_remove(zfs_cmd_t *zc) 1115{ 1116 spa_t *spa; 1117 int error; 1118 1119 error = spa_open(zc->zc_name, &spa, FTAG); 1120 if (error != 0) 1121 return (error); 1122 error = spa_vdev_remove(spa, zc->zc_guid, B_FALSE); 1123 spa_close(spa, FTAG); 1124 return (error); 1125} 1126 1127static int 1128zfs_ioc_vdev_set_state(zfs_cmd_t *zc) 1129{ 1130 spa_t *spa; 1131 int error; 1132 vdev_state_t newstate = VDEV_STATE_UNKNOWN; 1133 1134 if ((error = spa_open(zc->zc_name, &spa, FTAG)) != 0) 1135 return (error); 1136 switch (zc->zc_cookie) { 1137 case VDEV_STATE_ONLINE: 1138 error = vdev_online(spa, zc->zc_guid, zc->zc_obj, &newstate); 1139 break; 1140 1141 case VDEV_STATE_OFFLINE: 1142 error = vdev_offline(spa, zc->zc_guid, zc->zc_obj); 1143 break; 1144 1145 case VDEV_STATE_FAULTED: 1146 error = vdev_fault(spa, zc->zc_guid); 1147 break; 1148 1149 case VDEV_STATE_DEGRADED: 1150 error = vdev_degrade(spa, zc->zc_guid); 1151 break; 1152 1153 default: 1154 error = EINVAL; 1155 } 1156 zc->zc_cookie = newstate; 1157 spa_close(spa, FTAG); 1158 return (error); 1159} 1160 1161static int 1162zfs_ioc_vdev_attach(zfs_cmd_t *zc) 1163{ 1164 spa_t *spa; 1165 int replacing = zc->zc_cookie; 1166 nvlist_t *config; 1167 int error; 1168 1169 if ((error = spa_open(zc->zc_name, &spa, FTAG)) != 0) 1170 return (error); 1171 1172 if ((error = get_nvlist(zc->zc_nvlist_conf, zc->zc_nvlist_conf_size, 1173 &config)) == 0) { 1174 error = spa_vdev_attach(spa, zc->zc_guid, config, replacing); 1175 nvlist_free(config); 1176 } 1177 1178 spa_close(spa, FTAG); 1179 return (error); 1180} 1181 1182static int 1183zfs_ioc_vdev_detach(zfs_cmd_t *zc) 1184{ 1185 spa_t *spa; 1186 int error; 1187 1188 if ((error = spa_open(zc->zc_name, &spa, FTAG)) != 0) 1189 return (error); 1190 1191 error = spa_vdev_detach(spa, zc->zc_guid, B_FALSE); 1192 1193 spa_close(spa, FTAG); 1194 return (error); 1195} 1196 1197static int 1198zfs_ioc_vdev_setpath(zfs_cmd_t *zc) 1199{ 1200 spa_t *spa; 1201 char *path = zc->zc_value; 1202 uint64_t guid = zc->zc_guid; 1203 int error; 1204 1205 error = spa_open(zc->zc_name, &spa, FTAG); 1206 if (error != 0) 1207 return (error); 1208 1209 error = spa_vdev_setpath(spa, guid, path); 1210 spa_close(spa, FTAG); 1211 return (error); 1212} 1213 1214/* 1215 * inputs: 1216 * zc_name name of filesystem 1217 * zc_nvlist_dst_size size of buffer for property nvlist 1218 * 1219 * outputs: 1220 * zc_objset_stats stats 1221 * zc_nvlist_dst property nvlist 1222 * zc_nvlist_dst_size size of property nvlist 1223 */ 1224static int 1225zfs_ioc_objset_stats(zfs_cmd_t *zc) 1226{ 1227 objset_t *os = NULL; 1228 int error; 1229 nvlist_t *nv; 1230 1231 if (error = dmu_objset_open(zc->zc_name, 1232 DMU_OST_ANY, DS_MODE_USER | DS_MODE_READONLY, &os)) 1233 return (error); 1234 1235 dmu_objset_fast_stat(os, &zc->zc_objset_stats); 1236 1237 if (zc->zc_nvlist_dst != 0 && 1238 (error = dsl_prop_get_all(os, &nv, FALSE)) == 0) { 1239 dmu_objset_stats(os, nv); 1240 /* 1241 * NB: zvol_get_stats() will read the objset contents, 1242 * which we aren't supposed to do with a 1243 * DS_MODE_USER hold, because it could be 1244 * inconsistent. So this is a bit of a workaround... 1245 */ 1246 if (!zc->zc_objset_stats.dds_inconsistent) { 1247 if (dmu_objset_type(os) == DMU_OST_ZVOL) 1248 VERIFY(zvol_get_stats(os, nv) == 0); 1249 } 1250 error = put_nvlist(zc, nv); 1251 nvlist_free(nv); 1252 } 1253 1254 dmu_objset_close(os); 1255 if (error == ENOMEM) 1256 error = 0; 1257 return (error); 1258} 1259 1260static int 1261nvl_add_zplprop(objset_t *os, nvlist_t *props, zfs_prop_t prop) 1262{ 1263 uint64_t value; 1264 int error; 1265 1266 /* 1267 * zfs_get_zplprop() will either find a value or give us 1268 * the default value (if there is one). 1269 */ 1270 if ((error = zfs_get_zplprop(os, prop, &value)) != 0) 1271 return (error); 1272 VERIFY(nvlist_add_uint64(props, zfs_prop_to_name(prop), value) == 0); 1273 return (0); 1274} 1275 1276/* 1277 * inputs: 1278 * zc_name name of filesystem 1279 * zc_nvlist_dst_size size of buffer for zpl property nvlist 1280 * 1281 * outputs: 1282 * zc_nvlist_dst zpl property nvlist 1283 * zc_nvlist_dst_size size of zpl property nvlist 1284 */ 1285static int 1286zfs_ioc_objset_zplprops(zfs_cmd_t *zc) 1287{ 1288 objset_t *os; 1289 int err; 1290 1291 if (err = dmu_objset_open(zc->zc_name, 1292 DMU_OST_ANY, DS_MODE_USER | DS_MODE_READONLY, &os)) 1293 return (err); 1294 1295 dmu_objset_fast_stat(os, &zc->zc_objset_stats); 1296 1297 /* 1298 * NB: nvl_add_zplprop() will read the objset contents, 1299 * which we aren't supposed to do with a DS_MODE_USER 1300 * hold, because it could be inconsistent. 1301 */ 1302 if (zc->zc_nvlist_dst != 0 && 1303 !zc->zc_objset_stats.dds_inconsistent && 1304 dmu_objset_type(os) == DMU_OST_ZFS) { 1305 nvlist_t *nv; 1306 1307 VERIFY(nvlist_alloc(&nv, NV_UNIQUE_NAME, KM_SLEEP) == 0); 1308 if ((err = nvl_add_zplprop(os, nv, ZFS_PROP_VERSION)) == 0 && 1309 (err = nvl_add_zplprop(os, nv, ZFS_PROP_NORMALIZE)) == 0 && 1310 (err = nvl_add_zplprop(os, nv, ZFS_PROP_UTF8ONLY)) == 0 && 1311 (err = nvl_add_zplprop(os, nv, ZFS_PROP_CASE)) == 0) 1312 err = put_nvlist(zc, nv); 1313 nvlist_free(nv); 1314 } else { 1315 err = ENOENT; 1316 } 1317 dmu_objset_close(os); 1318 return (err); 1319} 1320 1321/* 1322 * inputs: 1323 * zc_name name of filesystem 1324 * zc_cookie zap cursor 1325 * zc_nvlist_dst_size size of buffer for property nvlist 1326 * 1327 * outputs: 1328 * zc_name name of next filesystem 1329 * zc_objset_stats stats 1330 * zc_nvlist_dst property nvlist 1331 * zc_nvlist_dst_size size of property nvlist 1332 */ 1333static int 1334zfs_ioc_dataset_list_next(zfs_cmd_t *zc) 1335{ 1336 objset_t *os; 1337 int error; 1338 char *p; 1339 1340 if (error = dmu_objset_open(zc->zc_name, 1341 DMU_OST_ANY, DS_MODE_USER | DS_MODE_READONLY, &os)) { 1342 if (error == ENOENT) 1343 error = ESRCH; 1344 return (error); 1345 } 1346 1347 p = strrchr(zc->zc_name, '/'); 1348 if (p == NULL || p[1] != '\0') 1349 (void) strlcat(zc->zc_name, "/", sizeof (zc->zc_name)); 1350 p = zc->zc_name + strlen(zc->zc_name); 1351 1352 do { 1353 error = dmu_dir_list_next(os, 1354 sizeof (zc->zc_name) - (p - zc->zc_name), p, 1355 NULL, &zc->zc_cookie); 1356 if (error == ENOENT) 1357 error = ESRCH; 1358 } while (error == 0 && !INGLOBALZONE(curthread) && 1359 !zone_dataset_visible(zc->zc_name, NULL)); 1360 dmu_objset_close(os); 1361 1362 /* 1363 * If it's a hidden dataset (ie. with a '$' in its name), don't 1364 * try to get stats for it. Userland will skip over it. 1365 */ 1366 if (error == 0 && strchr(zc->zc_name, '$') == NULL) 1367 error = zfs_ioc_objset_stats(zc); /* fill in the stats */ 1368 1369 return (error); 1370} 1371 1372/* 1373 * inputs: 1374 * zc_name name of filesystem 1375 * zc_cookie zap cursor 1376 * zc_nvlist_dst_size size of buffer for property nvlist 1377 * 1378 * outputs: 1379 * zc_name name of next snapshot 1380 * zc_objset_stats stats 1381 * zc_nvlist_dst property nvlist 1382 * zc_nvlist_dst_size size of property nvlist 1383 */ 1384static int 1385zfs_ioc_snapshot_list_next(zfs_cmd_t *zc) 1386{ 1387 objset_t *os; 1388 int error; 1389 1390 error = dmu_objset_open(zc->zc_name, 1391 DMU_OST_ANY, DS_MODE_USER | DS_MODE_READONLY, &os); 1392 if (error) 1393 return (error == ENOENT ? ESRCH : error); 1394 1395 /* 1396 * A dataset name of maximum length cannot have any snapshots, 1397 * so exit immediately. 1398 */ 1399 if (strlcat(zc->zc_name, "@", sizeof (zc->zc_name)) >= MAXNAMELEN) { 1400 dmu_objset_close(os); 1401 return (ESRCH); 1402 } 1403 1404 error = dmu_snapshot_list_next(os, 1405 sizeof (zc->zc_name) - strlen(zc->zc_name), 1406 zc->zc_name + strlen(zc->zc_name), NULL, &zc->zc_cookie, NULL); 1407 dmu_objset_close(os); 1408 if (error == 0) 1409 error = zfs_ioc_objset_stats(zc); /* fill in the stats */ 1410 else if (error == ENOENT) 1411 error = ESRCH; 1412 1413 /* if we failed, undo the @ that we tacked on to zc_name */ 1414 if (error) 1415 *strchr(zc->zc_name, '@') = '\0'; 1416 return (error); 1417} 1418 1419int 1420zfs_set_prop_nvlist(const char *name, nvlist_t *nvl) 1421{ 1422 nvpair_t *elem; 1423 int error; 1424 uint64_t intval; 1425 char *strval; 1426 1427 /* 1428 * First validate permission to set all of the properties 1429 */ 1430 elem = NULL; 1431 while ((elem = nvlist_next_nvpair(nvl, elem)) != NULL) { 1432 const char *propname = nvpair_name(elem); 1433 zfs_prop_t prop = zfs_name_to_prop(propname); 1434 1435 if (prop == ZPROP_INVAL) { 1436 /* 1437 * If this is a user-defined property, it must be a 1438 * string, and there is no further validation to do. 1439 */ 1440 if (!zfs_prop_user(propname) || 1441 nvpair_type(elem) != DATA_TYPE_STRING) 1442 return (EINVAL); 1443 1444 if (error = zfs_secpolicy_write_perms(name, 1445 ZFS_DELEG_PERM_USERPROP, CRED())) 1446 return (error); 1447 continue; 1448 } 1449 1450 if ((error = zfs_secpolicy_setprop(name, prop, CRED())) != 0) 1451 return (error); 1452 1453 /* 1454 * Check that this value is valid for this pool version 1455 */ 1456 switch (prop) { 1457 case ZFS_PROP_COMPRESSION: 1458 /* 1459 * If the user specified gzip compression, make sure 1460 * the SPA supports it. We ignore any errors here since 1461 * we'll catch them later. 1462 */ 1463 if (nvpair_type(elem) == DATA_TYPE_UINT64 && 1464 nvpair_value_uint64(elem, &intval) == 0) { 1465 if (intval >= ZIO_COMPRESS_GZIP_1 && 1466 intval <= ZIO_COMPRESS_GZIP_9 && 1467 zfs_earlier_version(name, 1468 SPA_VERSION_GZIP_COMPRESSION)) 1469 return (ENOTSUP); 1470 1471 /* 1472 * If this is a bootable dataset then 1473 * verify that the compression algorithm 1474 * is supported for booting. We must return 1475 * something other than ENOTSUP since it 1476 * implies a downrev pool version. 1477 */ 1478 if (zfs_is_bootfs(name) && 1479 !BOOTFS_COMPRESS_VALID(intval)) 1480 return (ERANGE); 1481 } 1482 break; 1483 1484 case ZFS_PROP_COPIES: 1485 if (zfs_earlier_version(name, 1486 SPA_VERSION_DITTO_BLOCKS)) 1487 return (ENOTSUP); 1488 break; 1489 1490 case ZFS_PROP_SHARESMB: 1491 if (zpl_earlier_version(name, ZPL_VERSION_FUID)) 1492 return (ENOTSUP); 1493 break; 1494 } 1495 } 1496 1497 elem = NULL; 1498 while ((elem = nvlist_next_nvpair(nvl, elem)) != NULL) { 1499 const char *propname = nvpair_name(elem); 1500 zfs_prop_t prop = zfs_name_to_prop(propname); 1501 1502 if (prop == ZPROP_INVAL) { 1503 VERIFY(nvpair_value_string(elem, &strval) == 0); 1504 error = dsl_prop_set(name, propname, 1, 1505 strlen(strval) + 1, strval); 1506 if (error == 0) 1507 continue; 1508 else 1509 return (error); 1510 } 1511 1512 switch (prop) { 1513 case ZFS_PROP_QUOTA: 1514 if ((error = nvpair_value_uint64(elem, &intval)) != 0 || 1515 (error = dsl_dir_set_quota(name, intval)) != 0) 1516 return (error); 1517 break; 1518 1519 case ZFS_PROP_REFQUOTA: 1520 if ((error = nvpair_value_uint64(elem, &intval)) != 0 || 1521 (error = dsl_dataset_set_quota(name, intval)) != 0) 1522 return (error); 1523 break; 1524 1525 case ZFS_PROP_RESERVATION: 1526 if ((error = nvpair_value_uint64(elem, &intval)) != 0 || 1527 (error = dsl_dir_set_reservation(name, 1528 intval)) != 0) 1529 return (error); 1530 break; 1531 1532 case ZFS_PROP_REFRESERVATION: 1533 if ((error = nvpair_value_uint64(elem, &intval)) != 0 || 1534 (error = dsl_dataset_set_reservation(name, 1535 intval)) != 0) 1536 return (error); 1537 break; 1538 1539 case ZFS_PROP_VOLSIZE: 1540 if ((error = nvpair_value_uint64(elem, &intval)) != 0 || 1541 (error = zvol_set_volsize(name, 1542 ddi_driver_major(zfs_dip), intval)) != 0) 1543 return (error); 1544 break; 1545 1546 case ZFS_PROP_VOLBLOCKSIZE: 1547 if ((error = nvpair_value_uint64(elem, &intval)) != 0 || 1548 (error = zvol_set_volblocksize(name, intval)) != 0) 1549 return (error); 1550 break; 1551 1552 case ZFS_PROP_VERSION: 1553 if ((error = nvpair_value_uint64(elem, &intval)) != 0 || 1554 (error = zfs_set_version(name, intval)) != 0) 1555 return (error); 1556 break; 1557 1558 default: 1559 if (nvpair_type(elem) == DATA_TYPE_STRING) { 1560 if (zfs_prop_get_type(prop) != 1561 PROP_TYPE_STRING) 1562 return (EINVAL); 1563 VERIFY(nvpair_value_string(elem, &strval) == 0); 1564 if ((error = dsl_prop_set(name, 1565 nvpair_name(elem), 1, strlen(strval) + 1, 1566 strval)) != 0) 1567 return (error); 1568 } else if (nvpair_type(elem) == DATA_TYPE_UINT64) { 1569 const char *unused; 1570 1571 VERIFY(nvpair_value_uint64(elem, &intval) == 0); 1572 1573 switch (zfs_prop_get_type(prop)) { 1574 case PROP_TYPE_NUMBER: 1575 break; 1576 case PROP_TYPE_STRING: 1577 return (EINVAL); 1578 case PROP_TYPE_INDEX: 1579 if (zfs_prop_index_to_string(prop, 1580 intval, &unused) != 0) 1581 return (EINVAL); 1582 break; 1583 default: 1584 cmn_err(CE_PANIC, 1585 "unknown property type"); 1586 break; 1587 } 1588 1589 if ((error = dsl_prop_set(name, propname, 1590 8, 1, &intval)) != 0) 1591 return (error); 1592 } else { 1593 return (EINVAL); 1594 } 1595 break; 1596 } 1597 } 1598 1599 return (0); 1600} 1601 1602/* 1603 * inputs: 1604 * zc_name name of filesystem 1605 * zc_value name of property to inherit 1606 * zc_nvlist_src{_size} nvlist of properties to apply 1607 * zc_cookie clear existing local props? 1608 * 1609 * outputs: none 1610 */ 1611static int 1612zfs_ioc_set_prop(zfs_cmd_t *zc) 1613{ 1614 nvlist_t *nvl; 1615 int error; 1616 1617 if ((error = get_nvlist(zc->zc_nvlist_src, zc->zc_nvlist_src_size, 1618 &nvl)) != 0) 1619 return (error); 1620 1621 if (zc->zc_cookie) { 1622 nvlist_t *origprops; 1623 objset_t *os; 1624 1625 if (dmu_objset_open(zc->zc_name, DMU_OST_ANY, 1626 DS_MODE_USER | DS_MODE_READONLY, &os) == 0) { 1627 if (dsl_prop_get_all(os, &origprops, TRUE) == 0) { 1628 clear_props(zc->zc_name, origprops); 1629 nvlist_free(origprops); 1630 } 1631 dmu_objset_close(os); 1632 } 1633 1634 } 1635 1636 error = zfs_set_prop_nvlist(zc->zc_name, nvl); 1637 1638 nvlist_free(nvl); 1639 return (error); 1640} 1641 1642/* 1643 * inputs: 1644 * zc_name name of filesystem 1645 * zc_value name of property to inherit 1646 * 1647 * outputs: none 1648 */ 1649static int 1650zfs_ioc_inherit_prop(zfs_cmd_t *zc) 1651{ 1652 /* the property name has been validated by zfs_secpolicy_inherit() */ 1653 return (dsl_prop_set(zc->zc_name, zc->zc_value, 0, 0, NULL)); 1654} 1655 1656static int 1657zfs_ioc_pool_set_props(zfs_cmd_t *zc) 1658{ 1659 nvlist_t *props; 1660 spa_t *spa; 1661 int error; 1662 1663 if ((error = get_nvlist(zc->zc_nvlist_src, zc->zc_nvlist_src_size, 1664 &props))) 1665 return (error); 1666 1667 if ((error = spa_open(zc->zc_name, &spa, FTAG)) != 0) { 1668 nvlist_free(props); 1669 return (error); 1670 } 1671 1672 error = spa_prop_set(spa, props); 1673 1674 nvlist_free(props); 1675 spa_close(spa, FTAG); 1676 1677 return (error); 1678} 1679 1680static int 1681zfs_ioc_pool_get_props(zfs_cmd_t *zc) 1682{ 1683 spa_t *spa; 1684 int error; 1685 nvlist_t *nvp = NULL; 1686 1687 if ((error = spa_open(zc->zc_name, &spa, FTAG)) != 0) 1688 return (error); 1689 1690 error = spa_prop_get(spa, &nvp); 1691 1692 if (error == 0 && zc->zc_nvlist_dst != 0) 1693 error = put_nvlist(zc, nvp); 1694 else 1695 error = EFAULT; 1696 1697 spa_close(spa, FTAG); 1698 1699 if (nvp) 1700 nvlist_free(nvp); 1701 return (error); 1702} 1703 1704static int 1705zfs_ioc_iscsi_perm_check(zfs_cmd_t *zc) 1706{ 1707#ifdef TODO 1708 nvlist_t *nvp; 1709 int error; 1710 uint32_t uid; 1711 uint32_t gid; 1712 uint32_t *groups; 1713 uint_t group_cnt; 1714 cred_t *usercred; 1715 1716 if ((error = get_nvlist(zc->zc_nvlist_src, zc->zc_nvlist_src_size, 1717 &nvp)) != 0) { 1718 return (error); 1719 } 1720 1721 if ((error = nvlist_lookup_uint32(nvp, 1722 ZFS_DELEG_PERM_UID, &uid)) != 0) { 1723 nvlist_free(nvp); 1724 return (EPERM); 1725 } 1726 1727 if ((error = nvlist_lookup_uint32(nvp, 1728 ZFS_DELEG_PERM_GID, &gid)) != 0) { 1729 nvlist_free(nvp); 1730 return (EPERM); 1731 } 1732 1733 if ((error = nvlist_lookup_uint32_array(nvp, ZFS_DELEG_PERM_GROUPS, 1734 &groups, &group_cnt)) != 0) { 1735 nvlist_free(nvp); 1736 return (EPERM); 1737 } 1738 usercred = cralloc(); 1739 if ((crsetugid(usercred, uid, gid) != 0) || 1740 (crsetgroups(usercred, group_cnt, (gid_t *)groups) != 0)) { 1741 nvlist_free(nvp); 1742 crfree(usercred); 1743 return (EPERM); 1744 } 1745 nvlist_free(nvp); 1746 error = dsl_deleg_access(zc->zc_name, 1747 zfs_prop_to_name(ZFS_PROP_SHAREISCSI), usercred); 1748 crfree(usercred); 1749 return (error); 1750#else 1751 return (EPERM); 1752#endif 1753} 1754 1755/* 1756 * inputs: 1757 * zc_name name of filesystem 1758 * zc_nvlist_src{_size} nvlist of delegated permissions 1759 * zc_perm_action allow/unallow flag 1760 * 1761 * outputs: none 1762 */ 1763static int 1764zfs_ioc_set_fsacl(zfs_cmd_t *zc) 1765{ 1766 int error; 1767 nvlist_t *fsaclnv = NULL; 1768 1769 if ((error = get_nvlist(zc->zc_nvlist_src, zc->zc_nvlist_src_size, 1770 &fsaclnv)) != 0) 1771 return (error); 1772 1773 /* 1774 * Verify nvlist is constructed correctly 1775 */ 1776 if ((error = zfs_deleg_verify_nvlist(fsaclnv)) != 0) { 1777 nvlist_free(fsaclnv); 1778 return (EINVAL); 1779 } 1780 1781 /* 1782 * If we don't have PRIV_SYS_MOUNT, then validate 1783 * that user is allowed to hand out each permission in 1784 * the nvlist(s) 1785 */ 1786 1787 error = secpolicy_zfs(CRED()); 1788 if (error) { 1789 if (zc->zc_perm_action == B_FALSE) { 1790 error = dsl_deleg_can_allow(zc->zc_name, 1791 fsaclnv, CRED()); 1792 } else { 1793 error = dsl_deleg_can_unallow(zc->zc_name, 1794 fsaclnv, CRED()); 1795 } 1796 } 1797 1798 if (error == 0) 1799 error = dsl_deleg_set(zc->zc_name, fsaclnv, zc->zc_perm_action); 1800 1801 nvlist_free(fsaclnv); 1802 return (error); 1803} 1804 1805/* 1806 * inputs: 1807 * zc_name name of filesystem 1808 * 1809 * outputs: 1810 * zc_nvlist_src{_size} nvlist of delegated permissions 1811 */ 1812static int 1813zfs_ioc_get_fsacl(zfs_cmd_t *zc) 1814{ 1815 nvlist_t *nvp; 1816 int error; 1817 1818 if ((error = dsl_deleg_get(zc->zc_name, &nvp)) == 0) { 1819 error = put_nvlist(zc, nvp); 1820 nvlist_free(nvp); 1821 } 1822 1823 return (error); 1824} 1825 1826/* 1827 * inputs: 1828 * zc_name name of volume 1829 * 1830 * outputs: none 1831 */ 1832static int 1833zfs_ioc_create_minor(zfs_cmd_t *zc) 1834{ 1835 return (zvol_create_minor(zc->zc_name, ddi_driver_major(zfs_dip))); 1836} 1837 1838/* 1839 * inputs: 1840 * zc_name name of volume 1841 * 1842 * outputs: none 1843 */ 1844static int 1845zfs_ioc_remove_minor(zfs_cmd_t *zc) 1846{ 1847 return (zvol_remove_minor(zc->zc_name)); 1848} 1849 1850/* 1851 * Search the vfs list for a specified resource. Returns a pointer to it 1852 * or NULL if no suitable entry is found. The caller of this routine 1853 * is responsible for releasing the returned vfs pointer. 1854 */ 1855static vfs_t * 1856zfs_get_vfs(const char *resource) 1857{ 1858 vfs_t *vfsp; 1859 1860 mtx_lock(&mountlist_mtx); 1861 TAILQ_FOREACH(vfsp, &mountlist, mnt_list) { 1862 if (strcmp(refstr_value(vfsp->vfs_resource), resource) == 0) { 1863 VFS_HOLD(vfsp); 1864 break; 1865 } 1866 } 1867 mtx_unlock(&mountlist_mtx); 1868 return (vfsp); 1869} 1870 1871/* ARGSUSED */ 1872static void 1873zfs_create_cb(objset_t *os, void *arg, cred_t *cr, dmu_tx_t *tx) 1874{ 1875 zfs_creat_t *zct = arg; 1876 1877 zfs_create_fs(os, cr, zct->zct_zplprops, tx); 1878} 1879 1880#define ZFS_PROP_UNDEFINED ((uint64_t)-1) 1881 1882/* 1883 * inputs: 1884 * createprops list of properties requested by creator 1885 * default_zplver zpl version to use if unspecified in createprops 1886 * fuids_ok fuids allowed in this version of the spa? 1887 * os parent objset pointer (NULL if root fs) 1888 * 1889 * outputs: 1890 * zplprops values for the zplprops we attach to the master node object 1891 * is_ci true if requested file system will be purely case-insensitive 1892 * 1893 * Determine the settings for utf8only, normalization and 1894 * casesensitivity. Specific values may have been requested by the 1895 * creator and/or we can inherit values from the parent dataset. If 1896 * the file system is of too early a vintage, a creator can not 1897 * request settings for these properties, even if the requested 1898 * setting is the default value. We don't actually want to create dsl 1899 * properties for these, so remove them from the source nvlist after 1900 * processing. 1901 */ 1902static int 1903zfs_fill_zplprops_impl(objset_t *os, uint64_t default_zplver, 1904 boolean_t fuids_ok, nvlist_t *createprops, nvlist_t *zplprops, 1905 boolean_t *is_ci) 1906{ 1907 uint64_t zplver = default_zplver; 1908 uint64_t sense = ZFS_PROP_UNDEFINED; 1909 uint64_t norm = ZFS_PROP_UNDEFINED; 1910 uint64_t u8 = ZFS_PROP_UNDEFINED; 1911 1912 ASSERT(zplprops != NULL); 1913 1914 /* 1915 * Pull out creator prop choices, if any. 1916 */ 1917 if (createprops) { 1918 (void) nvlist_lookup_uint64(createprops, 1919 zfs_prop_to_name(ZFS_PROP_VERSION), &zplver); 1920 (void) nvlist_lookup_uint64(createprops, 1921 zfs_prop_to_name(ZFS_PROP_NORMALIZE), &norm); 1922 (void) nvlist_remove_all(createprops, 1923 zfs_prop_to_name(ZFS_PROP_NORMALIZE)); 1924 (void) nvlist_lookup_uint64(createprops, 1925 zfs_prop_to_name(ZFS_PROP_UTF8ONLY), &u8); 1926 (void) nvlist_remove_all(createprops, 1927 zfs_prop_to_name(ZFS_PROP_UTF8ONLY)); 1928 (void) nvlist_lookup_uint64(createprops, 1929 zfs_prop_to_name(ZFS_PROP_CASE), &sense); 1930 (void) nvlist_remove_all(createprops, 1931 zfs_prop_to_name(ZFS_PROP_CASE)); 1932 } 1933 1934 /* 1935 * If the zpl version requested is whacky or the file system 1936 * or pool is version is too "young" to support normalization 1937 * and the creator tried to set a value for one of the props, 1938 * error out. 1939 */ 1940 if ((zplver < ZPL_VERSION_INITIAL || zplver > ZPL_VERSION) || 1941 (zplver >= ZPL_VERSION_FUID && !fuids_ok) || 1942 (zplver < ZPL_VERSION_NORMALIZATION && 1943 (norm != ZFS_PROP_UNDEFINED || u8 != ZFS_PROP_UNDEFINED || 1944 sense != ZFS_PROP_UNDEFINED))) 1945 return (ENOTSUP); 1946 1947 /* 1948 * Put the version in the zplprops 1949 */ 1950 VERIFY(nvlist_add_uint64(zplprops, 1951 zfs_prop_to_name(ZFS_PROP_VERSION), zplver) == 0); 1952 1953 if (norm == ZFS_PROP_UNDEFINED) 1954 VERIFY(zfs_get_zplprop(os, ZFS_PROP_NORMALIZE, &norm) == 0); 1955 VERIFY(nvlist_add_uint64(zplprops, 1956 zfs_prop_to_name(ZFS_PROP_NORMALIZE), norm) == 0); 1957 1958 /* 1959 * If we're normalizing, names must always be valid UTF-8 strings. 1960 */ 1961 if (norm) 1962 u8 = 1; 1963 if (u8 == ZFS_PROP_UNDEFINED) 1964 VERIFY(zfs_get_zplprop(os, ZFS_PROP_UTF8ONLY, &u8) == 0); 1965 VERIFY(nvlist_add_uint64(zplprops, 1966 zfs_prop_to_name(ZFS_PROP_UTF8ONLY), u8) == 0); 1967 1968 if (sense == ZFS_PROP_UNDEFINED) 1969 VERIFY(zfs_get_zplprop(os, ZFS_PROP_CASE, &sense) == 0); 1970 VERIFY(nvlist_add_uint64(zplprops, 1971 zfs_prop_to_name(ZFS_PROP_CASE), sense) == 0); 1972 1973 if (is_ci) 1974 *is_ci = (sense == ZFS_CASE_INSENSITIVE); 1975 1976 return (0); 1977} 1978 1979static int 1980zfs_fill_zplprops(const char *dataset, nvlist_t *createprops, 1981 nvlist_t *zplprops, boolean_t *is_ci) 1982{ 1983 boolean_t fuids_ok = B_TRUE; 1984 uint64_t zplver = ZPL_VERSION; 1985 objset_t *os = NULL; 1986 char parentname[MAXNAMELEN]; 1987 char *cp; 1988 int error; 1989 1990 (void) strlcpy(parentname, dataset, sizeof (parentname)); 1991 cp = strrchr(parentname, '/'); 1992 ASSERT(cp != NULL); 1993 cp[0] = '\0'; 1994 1995 if (zfs_earlier_version(dataset, SPA_VERSION_FUID)) { 1996 zplver = ZPL_VERSION_FUID - 1; 1997 fuids_ok = B_FALSE; 1998 } 1999 2000 /* 2001 * Open parent object set so we can inherit zplprop values. 2002 */ 2003 if ((error = dmu_objset_open(parentname, DMU_OST_ANY, 2004 DS_MODE_USER | DS_MODE_READONLY, &os)) != 0) 2005 return (error); 2006 2007 error = zfs_fill_zplprops_impl(os, zplver, fuids_ok, createprops, 2008 zplprops, is_ci); 2009 dmu_objset_close(os); 2010 return (error); 2011} 2012 2013static int 2014zfs_fill_zplprops_root(uint64_t spa_vers, nvlist_t *createprops, 2015 nvlist_t *zplprops, boolean_t *is_ci) 2016{ 2017 boolean_t fuids_ok = B_TRUE; 2018 uint64_t zplver = ZPL_VERSION; 2019 int error; 2020 2021 if (spa_vers < SPA_VERSION_FUID) { 2022 zplver = ZPL_VERSION_FUID - 1; 2023 fuids_ok = B_FALSE; 2024 } 2025 2026 error = zfs_fill_zplprops_impl(NULL, zplver, fuids_ok, createprops, 2027 zplprops, is_ci); 2028 return (error); 2029} 2030 2031/* 2032 * inputs: 2033 * zc_objset_type type of objset to create (fs vs zvol) 2034 * zc_name name of new objset 2035 * zc_value name of snapshot to clone from (may be empty) 2036 * zc_nvlist_src{_size} nvlist of properties to apply 2037 * 2038 * outputs: none 2039 */ 2040static int 2041zfs_ioc_create(zfs_cmd_t *zc) 2042{ 2043 objset_t *clone; 2044 int error = 0; 2045 zfs_creat_t zct; 2046 nvlist_t *nvprops = NULL; 2047 void (*cbfunc)(objset_t *os, void *arg, cred_t *cr, dmu_tx_t *tx); 2048 dmu_objset_type_t type = zc->zc_objset_type; 2049 2050 switch (type) { 2051 2052 case DMU_OST_ZFS: 2053 cbfunc = zfs_create_cb; 2054 break; 2055 2056 case DMU_OST_ZVOL: 2057 cbfunc = zvol_create_cb; 2058 break; 2059 2060 default: 2061 cbfunc = NULL; 2062 break; 2063 } 2064 if (strchr(zc->zc_name, '@') || 2065 strchr(zc->zc_name, '%')) 2066 return (EINVAL); 2067 2068 if (zc->zc_nvlist_src != 0 && 2069 (error = get_nvlist(zc->zc_nvlist_src, zc->zc_nvlist_src_size, 2070 &nvprops)) != 0) 2071 return (error); 2072 2073 zct.zct_zplprops = NULL; 2074 zct.zct_props = nvprops; 2075 2076 if (zc->zc_value[0] != '\0') { 2077 /* 2078 * We're creating a clone of an existing snapshot. 2079 */ 2080 zc->zc_value[sizeof (zc->zc_value) - 1] = '\0'; 2081 if (dataset_namecheck(zc->zc_value, NULL, NULL) != 0) { 2082 nvlist_free(nvprops); 2083 return (EINVAL); 2084 } 2085 2086 error = dmu_objset_open(zc->zc_value, type, 2087 DS_MODE_USER | DS_MODE_READONLY, &clone); 2088 if (error) { 2089 nvlist_free(nvprops); 2090 return (error); 2091 } 2092 2093 error = dmu_objset_create(zc->zc_name, type, clone, 0, 2094 NULL, NULL); 2095 if (error) { 2096 dmu_objset_close(clone); 2097 nvlist_free(nvprops); 2098 return (error); 2099 } 2100 dmu_objset_close(clone); 2101 } else { 2102 boolean_t is_insensitive = B_FALSE; 2103 2104 if (cbfunc == NULL) { 2105 nvlist_free(nvprops); 2106 return (EINVAL); 2107 } 2108 2109 if (type == DMU_OST_ZVOL) { 2110 uint64_t volsize, volblocksize; 2111 2112 if (nvprops == NULL || 2113 nvlist_lookup_uint64(nvprops, 2114 zfs_prop_to_name(ZFS_PROP_VOLSIZE), 2115 &volsize) != 0) { 2116 nvlist_free(nvprops); 2117 return (EINVAL); 2118 } 2119 2120 if ((error = nvlist_lookup_uint64(nvprops, 2121 zfs_prop_to_name(ZFS_PROP_VOLBLOCKSIZE), 2122 &volblocksize)) != 0 && error != ENOENT) { 2123 nvlist_free(nvprops); 2124 return (EINVAL); 2125 } 2126 2127 if (error != 0) 2128 volblocksize = zfs_prop_default_numeric( 2129 ZFS_PROP_VOLBLOCKSIZE); 2130 2131 if ((error = zvol_check_volblocksize( 2132 volblocksize)) != 0 || 2133 (error = zvol_check_volsize(volsize, 2134 volblocksize)) != 0) { 2135 nvlist_free(nvprops); 2136 return (error); 2137 } 2138 } else if (type == DMU_OST_ZFS) { 2139 int error; 2140 2141 /* 2142 * We have to have normalization and 2143 * case-folding flags correct when we do the 2144 * file system creation, so go figure them out 2145 * now. 2146 */ 2147 VERIFY(nvlist_alloc(&zct.zct_zplprops, 2148 NV_UNIQUE_NAME, KM_SLEEP) == 0); 2149 error = zfs_fill_zplprops(zc->zc_name, nvprops, 2150 zct.zct_zplprops, &is_insensitive); 2151 if (error != 0) { 2152 nvlist_free(nvprops); 2153 nvlist_free(zct.zct_zplprops); 2154 return (error); 2155 } 2156 } 2157 error = dmu_objset_create(zc->zc_name, type, NULL, 2158 is_insensitive ? DS_FLAG_CI_DATASET : 0, cbfunc, &zct); 2159 nvlist_free(zct.zct_zplprops); 2160 } 2161 2162 /* 2163 * It would be nice to do this atomically. 2164 */ 2165 if (error == 0) { 2166 if ((error = zfs_set_prop_nvlist(zc->zc_name, nvprops)) != 0) 2167 (void) dmu_objset_destroy(zc->zc_name); 2168 } 2169 nvlist_free(nvprops); 2170 return (error); 2171} 2172 2173struct snap_prop_arg { 2174 nvlist_t *nvprops; 2175 const char *snapname; 2176}; 2177 2178static int 2179set_snap_props(char *name, void *arg) 2180{ 2181 struct snap_prop_arg *snpa = arg; 2182 int len = strlen(name) + strlen(snpa->snapname) + 2; 2183 char *buf = kmem_alloc(len, KM_SLEEP); 2184 int err; 2185 2186 (void) snprintf(buf, len, "%s@%s", name, snpa->snapname); 2187 err = zfs_set_prop_nvlist(buf, snpa->nvprops); 2188 if (err) 2189 (void) dmu_objset_destroy(buf); 2190 kmem_free(buf, len); 2191 return (err); 2192} 2193 2194/* 2195 * inputs: 2196 * zc_name name of filesystem 2197 * zc_value short name of snapshot 2198 * zc_cookie recursive flag 2199 * 2200 * outputs: none 2201 */ 2202static int 2203zfs_ioc_snapshot(zfs_cmd_t *zc) 2204{ 2205 nvlist_t *nvprops = NULL; 2206 int error; 2207 boolean_t recursive = zc->zc_cookie; 2208 2209 if (snapshot_namecheck(zc->zc_value, NULL, NULL) != 0) 2210 return (EINVAL); 2211 2212 if (zc->zc_nvlist_src != 0 && 2213 (error = get_nvlist(zc->zc_nvlist_src, zc->zc_nvlist_src_size, 2214 &nvprops)) != 0) 2215 return (error); 2216 2217 error = dmu_objset_snapshot(zc->zc_name, zc->zc_value, recursive); 2218 2219 /* 2220 * It would be nice to do this atomically. 2221 */ 2222 if (error == 0) { 2223 struct snap_prop_arg snpa; 2224 snpa.nvprops = nvprops; 2225 snpa.snapname = zc->zc_value; 2226 if (recursive) { 2227 error = dmu_objset_find(zc->zc_name, 2228 set_snap_props, &snpa, DS_FIND_CHILDREN); 2229 if (error) { 2230 (void) dmu_snapshots_destroy(zc->zc_name, 2231 zc->zc_value); 2232 } 2233 } else { 2234 error = set_snap_props(zc->zc_name, &snpa); 2235 } 2236 } 2237 nvlist_free(nvprops); 2238 return (error); 2239} 2240 2241int 2242zfs_unmount_snap(char *name, void *arg) 2243{ 2244 vfs_t *vfsp = NULL; 2245 2246 if (arg) { 2247 char *snapname = arg; 2248 int len = strlen(name) + strlen(snapname) + 2; 2249 char *buf = kmem_alloc(len, KM_SLEEP); 2250 2251 (void) strcpy(buf, name); 2252 (void) strcat(buf, "@"); 2253 (void) strcat(buf, snapname); 2254 vfsp = zfs_get_vfs(buf); 2255 kmem_free(buf, len); 2256 } else if (strchr(name, '@')) { 2257 vfsp = zfs_get_vfs(name); 2258 } 2259 2260 if (vfsp) { 2261 /* 2262 * Always force the unmount for snapshots. 2263 */ 2264 int flag = MS_FORCE; 2265 int err; 2266 2267 if ((err = vn_vfswlock(vfsp->vfs_vnodecovered)) != 0) { 2268 VFS_RELE(vfsp); 2269 return (err); 2270 } 2271 VFS_RELE(vfsp); 2272 mtx_lock(&Giant); /* dounmount() */ 2273 dounmount(vfsp, flag, curthread); 2274 mtx_unlock(&Giant); /* dounmount() */ 2275 } 2276 return (0); 2277} 2278 2279/* 2280 * inputs: 2281 * zc_name name of filesystem 2282 * zc_value short name of snapshot 2283 * 2284 * outputs: none 2285 */ 2286static int 2287zfs_ioc_destroy_snaps(zfs_cmd_t *zc) 2288{ 2289 int err; 2290 2291 if (snapshot_namecheck(zc->zc_value, NULL, NULL) != 0) 2292 return (EINVAL); 2293 err = dmu_objset_find(zc->zc_name, 2294 zfs_unmount_snap, zc->zc_value, DS_FIND_CHILDREN); 2295 if (err) 2296 return (err); 2297 return (dmu_snapshots_destroy(zc->zc_name, zc->zc_value)); 2298} 2299 2300/* 2301 * inputs: 2302 * zc_name name of dataset to destroy 2303 * zc_objset_type type of objset 2304 * 2305 * outputs: none 2306 */ 2307static int 2308zfs_ioc_destroy(zfs_cmd_t *zc) 2309{ 2310 if (strchr(zc->zc_name, '@') && zc->zc_objset_type == DMU_OST_ZFS) { 2311 int err = zfs_unmount_snap(zc->zc_name, NULL); 2312 if (err) 2313 return (err); 2314 } 2315 2316 return (dmu_objset_destroy(zc->zc_name)); 2317} 2318 2319/* 2320 * inputs: 2321 * zc_name name of dataset to rollback (to most recent snapshot) 2322 * 2323 * outputs: none 2324 */ 2325static int 2326zfs_ioc_rollback(zfs_cmd_t *zc) 2327{ 2328 objset_t *os; 2329 int error; 2330 zfsvfs_t *zfsvfs = NULL; 2331 2332 /* 2333 * Get the zfsvfs for the receiving objset. There 2334 * won't be one if we're operating on a zvol, if the 2335 * objset doesn't exist yet, or is not mounted. 2336 */ 2337 error = dmu_objset_open(zc->zc_name, DMU_OST_ANY, DS_MODE_USER, &os); 2338 if (error) 2339 return (error); 2340 2341 if (dmu_objset_type(os) == DMU_OST_ZFS) { 2342 mutex_enter(&os->os->os_user_ptr_lock); 2343 zfsvfs = dmu_objset_get_user(os); 2344 if (zfsvfs != NULL) 2345 VFS_HOLD(zfsvfs->z_vfs); 2346 mutex_exit(&os->os->os_user_ptr_lock); 2347 } 2348 2349 if (zfsvfs != NULL) { 2350 char osname[MAXNAMELEN]; 2351 int mode; 2352 2353 error = zfs_suspend_fs(zfsvfs, osname, &mode); 2354 if (error == 0) { 2355 int resume_err; 2356 2357 ASSERT(strcmp(osname, zc->zc_name) == 0); 2358 error = dmu_objset_rollback(os); 2359 resume_err = zfs_resume_fs(zfsvfs, osname, mode); 2360 error = error ? error : resume_err; 2361 } else { 2362 dmu_objset_close(os); 2363 } 2364 VFS_RELE(zfsvfs->z_vfs); 2365 } else { 2366 error = dmu_objset_rollback(os); 2367 } 2368 /* Note, the dmu_objset_rollback() releases the objset for us. */ 2369 2370 return (error); 2371} 2372 2373/* 2374 * inputs: 2375 * zc_name old name of dataset 2376 * zc_value new name of dataset 2377 * zc_cookie recursive flag (only valid for snapshots) 2378 * 2379 * outputs: none 2380 */ 2381static int 2382zfs_ioc_rename(zfs_cmd_t *zc) 2383{ 2384 boolean_t recursive = zc->zc_cookie & 1; 2385 2386 zc->zc_value[sizeof (zc->zc_value) - 1] = '\0'; 2387 if (dataset_namecheck(zc->zc_value, NULL, NULL) != 0 || 2388 strchr(zc->zc_value, '%')) 2389 return (EINVAL); 2390 2391 /* 2392 * Unmount snapshot unless we're doing a recursive rename, 2393 * in which case the dataset code figures out which snapshots 2394 * to unmount. 2395 */ 2396 if (!recursive && strchr(zc->zc_name, '@') != NULL && 2397 zc->zc_objset_type == DMU_OST_ZFS) { 2398 int err = zfs_unmount_snap(zc->zc_name, NULL); 2399 if (err) 2400 return (err); 2401 } 2402 return (dmu_objset_rename(zc->zc_name, zc->zc_value, recursive)); 2403} 2404 2405static void 2406clear_props(char *dataset, nvlist_t *props) 2407{ 2408 zfs_cmd_t *zc; 2409 nvpair_t *prop; 2410 2411 if (props == NULL) 2412 return; 2413 zc = kmem_alloc(sizeof (zfs_cmd_t), KM_SLEEP); 2414 (void) strcpy(zc->zc_name, dataset); 2415 for (prop = nvlist_next_nvpair(props, NULL); prop; 2416 prop = nvlist_next_nvpair(props, prop)) { 2417 (void) strcpy(zc->zc_value, nvpair_name(prop)); 2418 if (zfs_secpolicy_inherit(zc, CRED()) == 0) 2419 (void) zfs_ioc_inherit_prop(zc); 2420 } 2421 kmem_free(zc, sizeof (zfs_cmd_t)); 2422} 2423 2424/* 2425 * inputs: 2426 * zc_name name of containing filesystem 2427 * zc_nvlist_src{_size} nvlist of properties to apply 2428 * zc_value name of snapshot to create 2429 * zc_string name of clone origin (if DRR_FLAG_CLONE) 2430 * zc_cookie file descriptor to recv from 2431 * zc_begin_record the BEGIN record of the stream (not byteswapped) 2432 * zc_guid force flag 2433 * 2434 * outputs: 2435 * zc_cookie number of bytes read 2436 */ 2437static int 2438zfs_ioc_recv(zfs_cmd_t *zc) 2439{ 2440 file_t *fp; 2441 objset_t *os; 2442 dmu_recv_cookie_t drc; 2443 zfsvfs_t *zfsvfs = NULL; 2444 boolean_t force = (boolean_t)zc->zc_guid; 2445 int error, fd; 2446 offset_t off; 2447 nvlist_t *props = NULL; 2448 nvlist_t *origprops = NULL; 2449 objset_t *origin = NULL; 2450 char *tosnap; 2451 char tofs[ZFS_MAXNAMELEN]; 2452 2453 if (dataset_namecheck(zc->zc_value, NULL, NULL) != 0 || 2454 strchr(zc->zc_value, '@') == NULL || 2455 strchr(zc->zc_value, '%')) 2456 return (EINVAL); 2457 2458 (void) strcpy(tofs, zc->zc_value); 2459 tosnap = strchr(tofs, '@'); 2460 *tosnap = '\0'; 2461 tosnap++; 2462 2463 if (zc->zc_nvlist_src != 0 && 2464 (error = get_nvlist(zc->zc_nvlist_src, zc->zc_nvlist_src_size, 2465 &props)) != 0) 2466 return (error); 2467 2468 fd = zc->zc_cookie; 2469 fp = getf(fd, 0); 2470 if (fp == NULL) { 2471 nvlist_free(props); 2472 return (EBADF); 2473 } 2474 2475 if (dmu_objset_open(tofs, DMU_OST_ANY, 2476 DS_MODE_USER | DS_MODE_READONLY, &os) == 0) { 2477 /* 2478 * Try to get the zfsvfs for the receiving objset. 2479 * There won't be one if we're operating on a zvol, 2480 * if the objset doesn't exist yet, or is not mounted. 2481 */ 2482 mutex_enter(&os->os->os_user_ptr_lock); 2483 if (zfsvfs = dmu_objset_get_user(os)) { 2484 if (!mutex_tryenter(&zfsvfs->z_online_recv_lock)) { 2485 mutex_exit(&os->os->os_user_ptr_lock); 2486 dmu_objset_close(os); 2487 zfsvfs = NULL; 2488 error = EBUSY; 2489 goto out; 2490 } 2491 VFS_HOLD(zfsvfs->z_vfs); 2492 } 2493 mutex_exit(&os->os->os_user_ptr_lock); 2494 2495 /* 2496 * If new properties are supplied, they are to completely 2497 * replace the existing ones, so stash away the existing ones. 2498 */ 2499 if (props) 2500 (void) dsl_prop_get_all(os, &origprops, TRUE); 2501 2502 dmu_objset_close(os); 2503 } 2504 2505 if (zc->zc_string[0]) { 2506 error = dmu_objset_open(zc->zc_string, DMU_OST_ANY, 2507 DS_MODE_USER | DS_MODE_READONLY, &origin); 2508 if (error) 2509 goto out; 2510 } 2511 2512 error = dmu_recv_begin(tofs, tosnap, &zc->zc_begin_record, 2513 force, origin, zfsvfs != NULL, &drc); 2514 if (origin) 2515 dmu_objset_close(origin); 2516 if (error) 2517 goto out; 2518 2519 /* 2520 * Reset properties. We do this before we receive the stream 2521 * so that the properties are applied to the new data. 2522 */ 2523 if (props) { 2524 clear_props(tofs, origprops); 2525 /* 2526 * XXX - Note, this is all-or-nothing; should be best-effort. 2527 */ 2528 (void) zfs_set_prop_nvlist(tofs, props); 2529 } 2530 2531 off = fp->f_offset; 2532 error = dmu_recv_stream(&drc, fp, &off); 2533 2534 if (error == 0 && zfsvfs) { 2535 char osname[MAXNAMELEN]; 2536 int mode; 2537 2538 /* online recv */ 2539 error = zfs_suspend_fs(zfsvfs, osname, &mode); 2540 if (error == 0) { 2541 int resume_err; 2542 2543 error = dmu_recv_end(&drc); 2544 resume_err = zfs_resume_fs(zfsvfs, osname, mode); 2545 error = error ? error : resume_err; 2546 } else { 2547 dmu_recv_abort_cleanup(&drc); 2548 } 2549 } else if (error == 0) { 2550 error = dmu_recv_end(&drc); 2551 } 2552 2553 zc->zc_cookie = off - fp->f_offset; 2554 if (off >= 0 && off <= MAXOFFSET_T) 2555 fp->f_offset = off; 2556 2557 /* 2558 * On error, restore the original props. 2559 */ 2560 if (error && props) { 2561 clear_props(tofs, props); 2562 (void) zfs_set_prop_nvlist(tofs, origprops); 2563 } 2564out: 2565 if (zfsvfs) { 2566 mutex_exit(&zfsvfs->z_online_recv_lock); 2567 VFS_RELE(zfsvfs->z_vfs); 2568 } 2569 nvlist_free(props); 2570 nvlist_free(origprops); 2571 releasef(fp); 2572 return (error); 2573} 2574 2575/* 2576 * inputs: 2577 * zc_name name of snapshot to send 2578 * zc_value short name of incremental fromsnap (may be empty) 2579 * zc_cookie file descriptor to send stream to 2580 * zc_obj fromorigin flag (mutually exclusive with zc_value) 2581 * 2582 * outputs: none 2583 */ 2584static int 2585zfs_ioc_send(zfs_cmd_t *zc) 2586{ 2587 objset_t *fromsnap = NULL; 2588 objset_t *tosnap; 2589 file_t *fp; 2590 int error; 2591 offset_t off; 2592 2593 error = dmu_objset_open(zc->zc_name, DMU_OST_ANY, 2594 DS_MODE_USER | DS_MODE_READONLY, &tosnap); 2595 if (error) 2596 return (error); 2597 2598 if (zc->zc_value[0] != '\0') { 2599 char buf[MAXPATHLEN]; 2600 char *cp; 2601 2602 (void) strncpy(buf, zc->zc_name, sizeof (buf)); 2603 cp = strchr(buf, '@'); 2604 if (cp) 2605 *(cp+1) = 0; 2606 (void) strlcat(buf, zc->zc_value, sizeof (buf)); 2607 error = dmu_objset_open(buf, DMU_OST_ANY, 2608 DS_MODE_USER | DS_MODE_READONLY, &fromsnap); 2609 if (error) { 2610 dmu_objset_close(tosnap); 2611 return (error); 2612 } 2613 } 2614 2615 fp = getf(zc->zc_cookie, 1); 2616 if (fp == NULL) { 2617 dmu_objset_close(tosnap); 2618 if (fromsnap) 2619 dmu_objset_close(fromsnap); 2620 return (EBADF); 2621 } 2622 2623 off = fp->f_offset; 2624 error = dmu_sendbackup(tosnap, fromsnap, zc->zc_obj, fp, &off); 2625 2626 if (off >= 0 && off <= MAXOFFSET_T) 2627 fp->f_offset = off; 2628 releasef(fp); 2629 if (fromsnap) 2630 dmu_objset_close(fromsnap); 2631 dmu_objset_close(tosnap); 2632 return (error); 2633} 2634 2635static int 2636zfs_ioc_inject_fault(zfs_cmd_t *zc) 2637{ 2638 int id, error; 2639 2640 error = zio_inject_fault(zc->zc_name, (int)zc->zc_guid, &id, 2641 &zc->zc_inject_record); 2642 2643 if (error == 0) 2644 zc->zc_guid = (uint64_t)id; 2645 2646 return (error); 2647} 2648 2649static int 2650zfs_ioc_clear_fault(zfs_cmd_t *zc) 2651{ 2652 return (zio_clear_fault((int)zc->zc_guid)); 2653} 2654 2655static int 2656zfs_ioc_inject_list_next(zfs_cmd_t *zc) 2657{ 2658 int id = (int)zc->zc_guid; 2659 int error; 2660 2661 error = zio_inject_list_next(&id, zc->zc_name, sizeof (zc->zc_name), 2662 &zc->zc_inject_record); 2663 2664 zc->zc_guid = id; 2665 2666 return (error); 2667} 2668 2669static int 2670zfs_ioc_error_log(zfs_cmd_t *zc) 2671{ 2672 spa_t *spa; 2673 int error; 2674 size_t count = (size_t)zc->zc_nvlist_dst_size; 2675 2676 if ((error = spa_open(zc->zc_name, &spa, FTAG)) != 0) 2677 return (error); 2678 2679 error = spa_get_errlog(spa, (void *)(uintptr_t)zc->zc_nvlist_dst, 2680 &count); 2681 if (error == 0) 2682 zc->zc_nvlist_dst_size = count; 2683 else 2684 zc->zc_nvlist_dst_size = spa_get_errlog_size(spa); 2685 2686 spa_close(spa, FTAG); 2687 2688 return (error); 2689} 2690 2691static int 2692zfs_ioc_clear(zfs_cmd_t *zc) 2693{ 2694 spa_t *spa; 2695 vdev_t *vd; 2696 int error; 2697 2698 /* 2699 * On zpool clear we also fix up missing slogs 2700 */ 2701 mutex_enter(&spa_namespace_lock); 2702 spa = spa_lookup(zc->zc_name); 2703 if (spa == NULL) { 2704 mutex_exit(&spa_namespace_lock); 2705 return (EIO); 2706 } 2707 if (spa->spa_log_state == SPA_LOG_MISSING) { 2708 /* we need to let spa_open/spa_load clear the chains */ 2709 spa->spa_log_state = SPA_LOG_CLEAR; 2710 } 2711 mutex_exit(&spa_namespace_lock); 2712 2713 if ((error = spa_open(zc->zc_name, &spa, FTAG)) != 0) 2714 return (error); 2715 2716 spa_vdev_state_enter(spa); 2717 2718 if (zc->zc_guid == 0) { 2719 vd = NULL; 2720 } else { 2721 vd = spa_lookup_by_guid(spa, zc->zc_guid, B_TRUE); 2722 if (vd == NULL) { 2723 (void) spa_vdev_state_exit(spa, NULL, ENODEV); 2724 spa_close(spa, FTAG); 2725 return (ENODEV); 2726 } 2727 } 2728 2729 vdev_clear(spa, vd); 2730 2731 (void) spa_vdev_state_exit(spa, NULL, 0); 2732 2733 /* 2734 * Resume any suspended I/Os. 2735 */ 2736 zio_resume(spa); 2737 2738 spa_close(spa, FTAG); 2739 2740 return (0); 2741} 2742 2743/* 2744 * inputs: 2745 * zc_name name of filesystem 2746 * zc_value name of origin snapshot 2747 * 2748 * outputs: none 2749 */ 2750static int 2751zfs_ioc_promote(zfs_cmd_t *zc) 2752{ 2753 char *cp; 2754 2755 /* 2756 * We don't need to unmount *all* the origin fs's snapshots, but 2757 * it's easier. 2758 */ 2759 cp = strchr(zc->zc_value, '@'); 2760 if (cp) 2761 *cp = '\0'; 2762 (void) dmu_objset_find(zc->zc_value, 2763 zfs_unmount_snap, NULL, DS_FIND_SNAPSHOTS); 2764 return (dsl_dataset_promote(zc->zc_name)); 2765} 2766 2767#ifdef TODO 2768/* 2769 * We don't want to have a hard dependency 2770 * against some special symbols in sharefs 2771 * nfs, and smbsrv. Determine them if needed when 2772 * the first file system is shared. 2773 * Neither sharefs, nfs or smbsrv are unloadable modules. 2774 */ 2775int (*znfsexport_fs)(void *arg); 2776int (*zshare_fs)(enum sharefs_sys_op, share_t *, uint32_t); 2777int (*zsmbexport_fs)(void *arg, boolean_t add_share); 2778 2779int zfs_nfsshare_inited; 2780int zfs_smbshare_inited; 2781 2782ddi_modhandle_t nfs_mod; 2783ddi_modhandle_t sharefs_mod; 2784ddi_modhandle_t smbsrv_mod; 2785#endif 2786kmutex_t zfs_share_lock; 2787 2788#ifdef TODO 2789static int 2790zfs_init_sharefs() 2791{ 2792 int error; 2793 2794 ASSERT(MUTEX_HELD(&zfs_share_lock)); 2795 /* Both NFS and SMB shares also require sharetab support. */ 2796 if (sharefs_mod == NULL && ((sharefs_mod = 2797 ddi_modopen("fs/sharefs", 2798 KRTLD_MODE_FIRST, &error)) == NULL)) { 2799 return (ENOSYS); 2800 } 2801 if (zshare_fs == NULL && ((zshare_fs = 2802 (int (*)(enum sharefs_sys_op, share_t *, uint32_t)) 2803 ddi_modsym(sharefs_mod, "sharefs_impl", &error)) == NULL)) { 2804 return (ENOSYS); 2805 } 2806 return (0); 2807} 2808#endif 2809 2810static int 2811zfs_ioc_share(zfs_cmd_t *zc) 2812{ 2813#ifdef TODO 2814 int error; 2815 int opcode; 2816 2817 switch (zc->zc_share.z_sharetype) { 2818 case ZFS_SHARE_NFS: 2819 case ZFS_UNSHARE_NFS: 2820 if (zfs_nfsshare_inited == 0) { 2821 mutex_enter(&zfs_share_lock); 2822 if (nfs_mod == NULL && ((nfs_mod = ddi_modopen("fs/nfs", 2823 KRTLD_MODE_FIRST, &error)) == NULL)) { 2824 mutex_exit(&zfs_share_lock); 2825 return (ENOSYS); 2826 } 2827 if (znfsexport_fs == NULL && 2828 ((znfsexport_fs = (int (*)(void *)) 2829 ddi_modsym(nfs_mod, 2830 "nfs_export", &error)) == NULL)) { 2831 mutex_exit(&zfs_share_lock); 2832 return (ENOSYS); 2833 } 2834 error = zfs_init_sharefs(); 2835 if (error) { 2836 mutex_exit(&zfs_share_lock); 2837 return (ENOSYS); 2838 } 2839 zfs_nfsshare_inited = 1; 2840 mutex_exit(&zfs_share_lock); 2841 } 2842 break; 2843 case ZFS_SHARE_SMB: 2844 case ZFS_UNSHARE_SMB: 2845 if (zfs_smbshare_inited == 0) { 2846 mutex_enter(&zfs_share_lock); 2847 if (smbsrv_mod == NULL && ((smbsrv_mod = 2848 ddi_modopen("drv/smbsrv", 2849 KRTLD_MODE_FIRST, &error)) == NULL)) { 2850 mutex_exit(&zfs_share_lock); 2851 return (ENOSYS); 2852 } 2853 if (zsmbexport_fs == NULL && ((zsmbexport_fs = 2854 (int (*)(void *, boolean_t))ddi_modsym(smbsrv_mod, 2855 "smb_server_share", &error)) == NULL)) { 2856 mutex_exit(&zfs_share_lock); 2857 return (ENOSYS); 2858 } 2859 error = zfs_init_sharefs(); 2860 if (error) { 2861 mutex_exit(&zfs_share_lock); 2862 return (ENOSYS); 2863 } 2864 zfs_smbshare_inited = 1; 2865 mutex_exit(&zfs_share_lock); 2866 } 2867 break; 2868 default: 2869 return (EINVAL); 2870 } 2871 2872 switch (zc->zc_share.z_sharetype) { 2873 case ZFS_SHARE_NFS: 2874 case ZFS_UNSHARE_NFS: 2875 if (error = 2876 znfsexport_fs((void *) 2877 (uintptr_t)zc->zc_share.z_exportdata)) 2878 return (error); 2879 break; 2880 case ZFS_SHARE_SMB: 2881 case ZFS_UNSHARE_SMB: 2882 if (error = zsmbexport_fs((void *) 2883 (uintptr_t)zc->zc_share.z_exportdata, 2884 zc->zc_share.z_sharetype == ZFS_SHARE_SMB ? 2885 B_TRUE : B_FALSE)) { 2886 return (error); 2887 } 2888 break; 2889 } 2890 2891 opcode = (zc->zc_share.z_sharetype == ZFS_SHARE_NFS || 2892 zc->zc_share.z_sharetype == ZFS_SHARE_SMB) ? 2893 SHAREFS_ADD : SHAREFS_REMOVE; 2894 2895 /* 2896 * Add or remove share from sharetab 2897 */ 2898 error = zshare_fs(opcode, 2899 (void *)(uintptr_t)zc->zc_share.z_sharedata, 2900 zc->zc_share.z_sharemax); 2901 2902 return (error); 2903#else 2904 return (ENOSYS); 2905#endif 2906} 2907 2908/* 2909 * pool create, destroy, and export don't log the history as part of 2910 * zfsdev_ioctl, but rather zfs_ioc_pool_create, and zfs_ioc_pool_export 2911 * do the logging of those commands. 2912 */ 2913static int 2914zfs_ioc_jail(zfs_cmd_t *zc) 2915{ 2916 2917 return (zone_dataset_attach(curthread->td_ucred, zc->zc_name, 2918 (int)zc->zc_jailid)); 2919} 2920 2921static int 2922zfs_ioc_unjail(zfs_cmd_t *zc) 2923{ 2924 2925 return (zone_dataset_detach(curthread->td_ucred, zc->zc_name, 2926 (int)zc->zc_jailid)); 2927} 2928 2929static zfs_ioc_vec_t zfs_ioc_vec[] = { 2930 { zfs_ioc_pool_create, zfs_secpolicy_config, POOL_NAME, B_FALSE }, 2931 { zfs_ioc_pool_destroy, zfs_secpolicy_config, POOL_NAME, B_FALSE }, 2932 { zfs_ioc_pool_import, zfs_secpolicy_config, POOL_NAME, B_TRUE }, 2933 { zfs_ioc_pool_export, zfs_secpolicy_config, POOL_NAME, B_FALSE }, 2934 { zfs_ioc_pool_configs, zfs_secpolicy_none, NO_NAME, B_FALSE }, 2935 { zfs_ioc_pool_stats, zfs_secpolicy_read, POOL_NAME, B_FALSE }, 2936 { zfs_ioc_pool_tryimport, zfs_secpolicy_config, NO_NAME, B_FALSE }, 2937 { zfs_ioc_pool_scrub, zfs_secpolicy_config, POOL_NAME, B_TRUE }, 2938 { zfs_ioc_pool_freeze, zfs_secpolicy_config, NO_NAME, B_FALSE }, 2939 { zfs_ioc_pool_upgrade, zfs_secpolicy_config, POOL_NAME, B_TRUE }, 2940 { zfs_ioc_pool_get_history, zfs_secpolicy_config, POOL_NAME, B_FALSE }, 2941 { zfs_ioc_vdev_add, zfs_secpolicy_config, POOL_NAME, B_TRUE }, 2942 { zfs_ioc_vdev_remove, zfs_secpolicy_config, POOL_NAME, B_TRUE }, 2943 { zfs_ioc_vdev_set_state, zfs_secpolicy_config, POOL_NAME, B_TRUE }, 2944 { zfs_ioc_vdev_attach, zfs_secpolicy_config, POOL_NAME, B_TRUE }, 2945 { zfs_ioc_vdev_detach, zfs_secpolicy_config, POOL_NAME, B_TRUE }, 2946 { zfs_ioc_vdev_setpath, zfs_secpolicy_config, POOL_NAME, B_FALSE }, 2947 { zfs_ioc_objset_stats, zfs_secpolicy_read, DATASET_NAME, B_FALSE }, 2948 { zfs_ioc_objset_zplprops, zfs_secpolicy_read, DATASET_NAME, B_FALSE }, 2949 { zfs_ioc_dataset_list_next, zfs_secpolicy_read, 2950 DATASET_NAME, B_FALSE }, 2951 { zfs_ioc_snapshot_list_next, zfs_secpolicy_read, 2952 DATASET_NAME, B_FALSE }, 2953 { zfs_ioc_set_prop, zfs_secpolicy_none, DATASET_NAME, B_TRUE }, 2954 { zfs_ioc_create_minor, zfs_secpolicy_minor, DATASET_NAME, B_FALSE }, 2955 { zfs_ioc_remove_minor, zfs_secpolicy_minor, DATASET_NAME, B_FALSE }, 2956 { zfs_ioc_create, zfs_secpolicy_create, DATASET_NAME, B_TRUE }, 2957 { zfs_ioc_destroy, zfs_secpolicy_destroy, DATASET_NAME, B_TRUE }, 2958 { zfs_ioc_rollback, zfs_secpolicy_rollback, DATASET_NAME, B_TRUE }, 2959 { zfs_ioc_rename, zfs_secpolicy_rename, DATASET_NAME, B_TRUE }, 2960 { zfs_ioc_recv, zfs_secpolicy_receive, DATASET_NAME, B_TRUE }, 2961 { zfs_ioc_send, zfs_secpolicy_send, DATASET_NAME, B_TRUE }, 2962 { zfs_ioc_inject_fault, zfs_secpolicy_inject, NO_NAME, B_FALSE }, 2963 { zfs_ioc_clear_fault, zfs_secpolicy_inject, NO_NAME, B_FALSE }, 2964 { zfs_ioc_inject_list_next, zfs_secpolicy_inject, NO_NAME, B_FALSE }, 2965 { zfs_ioc_error_log, zfs_secpolicy_inject, POOL_NAME, B_FALSE }, 2966 { zfs_ioc_clear, zfs_secpolicy_config, POOL_NAME, B_TRUE }, 2967 { zfs_ioc_promote, zfs_secpolicy_promote, DATASET_NAME, B_TRUE }, 2968 { zfs_ioc_destroy_snaps, zfs_secpolicy_destroy, DATASET_NAME, B_TRUE }, 2969 { zfs_ioc_snapshot, zfs_secpolicy_snapshot, DATASET_NAME, B_TRUE }, 2970 { zfs_ioc_dsobj_to_dsname, zfs_secpolicy_config, POOL_NAME, B_FALSE }, 2971 { zfs_ioc_obj_to_path, zfs_secpolicy_config, NO_NAME, B_FALSE }, 2972 { zfs_ioc_pool_set_props, zfs_secpolicy_config, POOL_NAME, B_TRUE }, 2973 { zfs_ioc_pool_get_props, zfs_secpolicy_read, POOL_NAME, B_FALSE }, 2974 { zfs_ioc_set_fsacl, zfs_secpolicy_fsacl, DATASET_NAME, B_TRUE }, 2975 { zfs_ioc_get_fsacl, zfs_secpolicy_read, DATASET_NAME, B_FALSE }, 2976 { zfs_ioc_iscsi_perm_check, zfs_secpolicy_iscsi, 2977 DATASET_NAME, B_FALSE }, 2978 { zfs_ioc_share, zfs_secpolicy_share, DATASET_NAME, B_FALSE }, 2979 { zfs_ioc_inherit_prop, zfs_secpolicy_inherit, DATASET_NAME, B_TRUE }, 2980 { zfs_ioc_jail, zfs_secpolicy_config, DATASET_NAME, B_TRUE }, 2981 { zfs_ioc_unjail, zfs_secpolicy_config, DATASET_NAME, B_TRUE } 2982}; 2983 2984static int 2985zfsdev_ioctl(struct cdev *dev, u_long cmd, caddr_t addr, int flag, 2986 struct thread *td) 2987{ 2988 zfs_cmd_t *zc = (void *)addr; 2989 uint_t vec; 2990 int error; 2991 2992 vec = ZFS_IOC(cmd); 2993 2994 if (vec >= sizeof (zfs_ioc_vec) / sizeof (zfs_ioc_vec[0])) 2995 return (EINVAL); 2996 2997 error = zfs_ioc_vec[vec].zvec_secpolicy(zc, td->td_ucred); 2998 2999 /* 3000 * Ensure that all pool/dataset names are valid before we pass down to 3001 * the lower layers. 3002 */ 3003 if (error == 0) { 3004 zc->zc_name[sizeof (zc->zc_name) - 1] = '\0'; 3005 switch (zfs_ioc_vec[vec].zvec_namecheck) { 3006 case POOL_NAME: 3007 if (pool_namecheck(zc->zc_name, NULL, NULL) != 0) 3008 error = EINVAL; 3009 break; 3010 3011 case DATASET_NAME: 3012 if (dataset_namecheck(zc->zc_name, NULL, NULL) != 0) 3013 error = EINVAL; 3014 break; 3015 3016 case NO_NAME: 3017 break; 3018 } 3019 } 3020 3021 if (error == 0) 3022 error = zfs_ioc_vec[vec].zvec_func(zc); 3023 3024 if (zfs_ioc_vec[vec].zvec_his_log == B_TRUE) 3025 zfs_log_history(zc); 3026 3027 return (error); 3028} 3029 3030/* 3031 * OK, so this is a little weird. 3032 * 3033 * /dev/zfs is the control node, i.e. minor 0. 3034 * /dev/zvol/[r]dsk/pool/dataset are the zvols, minor > 0. 3035 * 3036 * /dev/zfs has basically nothing to do except serve up ioctls, 3037 * so most of the standard driver entry points are in zvol.c. 3038 */ 3039static struct cdevsw zfs_cdevsw = { 3040 .d_version = D_VERSION, 3041 .d_ioctl = zfsdev_ioctl, 3042 .d_name = ZFS_DEV_NAME 3043}; 3044 3045static void 3046zfsdev_init(void) 3047{ 3048 zfsdev = make_dev(&zfs_cdevsw, 0x0, UID_ROOT, GID_OPERATOR, 0666, 3049 ZFS_DEV_NAME); 3050} 3051 3052static void 3053zfsdev_fini(void) 3054{ 3055 if (zfsdev != NULL) 3056 destroy_dev(zfsdev); 3057} 3058 3059static struct task zfs_start_task; 3060static struct root_hold_token *zfs_root_token; 3061 3062 3063uint_t zfs_fsyncer_key; 3064extern uint_t rrw_tsd_key; 3065 3066static void 3067zfs_start(void *context __unused, int pending __unused) 3068{ 3069 3070 zfsdev_init(); 3071 spa_init(FREAD | FWRITE); 3072 zfs_init(); 3073 zvol_init(); 3074 3075 tsd_create(&zfs_fsyncer_key, NULL); 3076 tsd_create(&rrw_tsd_key, NULL); 3077 3078 printf("ZFS storage pool version " SPA_VERSION_STRING "\n"); 3079 root_mount_rel(zfs_root_token); 3080} 3081 3082static int 3083zfs_modevent(module_t mod, int type, void *unused __unused) 3084{ 3085 int error; 3086 3087 error = EOPNOTSUPP; 3088 switch (type) { 3089 case MOD_LOAD: 3090 zfs_root_token = root_mount_hold("ZFS"); 3091 printf("WARNING: ZFS is considered to be an experimental " 3092 "feature in FreeBSD.\n"); 3093 TASK_INIT(&zfs_start_task, 0, zfs_start, NULL); 3094 taskqueue_enqueue(taskqueue_thread, &zfs_start_task); 3095 mutex_init(&zfs_share_lock, NULL, MUTEX_DEFAULT, NULL); 3096 error = 0; 3097 break; 3098 case MOD_UNLOAD: 3099 if (spa_busy() || zfs_busy() || zvol_busy() || 3100 zio_injection_enabled) { 3101 error = EBUSY; 3102 break; 3103 } 3104 zvol_fini(); 3105 zfs_fini(); 3106 spa_fini(); 3107 zfsdev_fini(); 3108 tsd_destroy(&zfs_fsyncer_key); 3109 tsd_destroy(&rrw_tsd_key); 3110 mutex_destroy(&zfs_share_lock); 3111 error = 0; 3112 break; 3113 } 3114 return (error); 3115} 3116 3117static moduledata_t zfs_mod = { 3118 "zfsctrl", 3119 zfs_modevent, 3120 0 3121}; 3122DECLARE_MODULE(zfsctrl, zfs_mod, SI_SUB_VFS, SI_ORDER_ANY); 3123MODULE_DEPEND(zfsctrl, opensolaris, 1, 1, 1); 3124