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 2009 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/errno.h> 29 #include <sys/uio.h> 30 #include <sys/buf.h> 31 #include <sys/modctl.h> 32 #include <sys/open.h> 33 #include <sys/file.h> 34 #include <sys/kmem.h> 35 #include <sys/conf.h> 36 #include <sys/cmn_err.h> 37 #include <sys/stat.h> 38 #include <sys/zfs_ioctl.h> 39 #include <sys/zfs_znode.h> 40 #include <sys/zap.h> 41 #include <sys/spa.h> 42 #include <sys/spa_impl.h> 43 #include <sys/vdev.h> 44 #include <sys/vdev_impl.h> 45 #include <sys/dmu.h> 46 #include <sys/dsl_dir.h> 47 #include <sys/dsl_dataset.h> 48 #include <sys/dsl_prop.h> 49 #include <sys/dsl_deleg.h> 50 #include <sys/dmu_objset.h> 51 #include <sys/ddi.h> 52 #include <sys/sunddi.h> 53 #include <sys/sunldi.h> 54 #include <sys/policy.h> 55 #include <sys/zone.h> 56 #include <sys/nvpair.h> 57 #include <sys/pathname.h> 58 #include <sys/mount.h> 59 #include <sys/sdt.h> 60 #include <sys/fs/zfs.h> 61 #include <sys/zfs_ctldir.h> 62 #include <sys/zfs_dir.h> 63 #include <sys/zvol.h> 64 #include <sharefs/share.h> 65 #include <sys/dmu_objset.h> 66 67 #include "zfs_namecheck.h" 68 #include "zfs_prop.h" 69 #include "zfs_deleg.h" 70 71 extern struct modlfs zfs_modlfs; 72 73 extern void zfs_init(void); 74 extern void zfs_fini(void); 75 76 ldi_ident_t zfs_li = NULL; 77 dev_info_t *zfs_dip; 78 79 typedef int zfs_ioc_func_t(zfs_cmd_t *); 80 typedef int zfs_secpolicy_func_t(zfs_cmd_t *, cred_t *); 81 82 typedef enum { 83 NO_NAME, 84 POOL_NAME, 85 DATASET_NAME 86 } zfs_ioc_namecheck_t; 87 88 typedef struct zfs_ioc_vec { 89 zfs_ioc_func_t *zvec_func; 90 zfs_secpolicy_func_t *zvec_secpolicy; 91 zfs_ioc_namecheck_t zvec_namecheck; 92 boolean_t zvec_his_log; 93 boolean_t zvec_pool_check; 94 } zfs_ioc_vec_t; 95 96 static void clear_props(char *dataset, nvlist_t *props, nvlist_t *newprops); 97 static int zfs_fill_zplprops_root(uint64_t, nvlist_t *, nvlist_t *, 98 boolean_t *); 99 int zfs_set_prop_nvlist(const char *, nvlist_t *); 100 101 /* _NOTE(PRINTFLIKE(4)) - this is printf-like, but lint is too whiney */ 102 void 103 __dprintf(const char *file, const char *func, int line, const char *fmt, ...) 104 { 105 const char *newfile; 106 char buf[256]; 107 va_list adx; 108 109 /* 110 * Get rid of annoying "../common/" prefix to filename. 111 */ 112 newfile = strrchr(file, '/'); 113 if (newfile != NULL) { 114 newfile = newfile + 1; /* Get rid of leading / */ 115 } else { 116 newfile = file; 117 } 118 119 va_start(adx, fmt); 120 (void) vsnprintf(buf, sizeof (buf), fmt, adx); 121 va_end(adx); 122 123 /* 124 * To get this data, use the zfs-dprintf probe as so: 125 * dtrace -q -n 'zfs-dprintf \ 126 * /stringof(arg0) == "dbuf.c"/ \ 127 * {printf("%s: %s", stringof(arg1), stringof(arg3))}' 128 * arg0 = file name 129 * arg1 = function name 130 * arg2 = line number 131 * arg3 = message 132 */ 133 DTRACE_PROBE4(zfs__dprintf, 134 char *, newfile, char *, func, int, line, char *, buf); 135 } 136 137 static void 138 history_str_free(char *buf) 139 { 140 kmem_free(buf, HIS_MAX_RECORD_LEN); 141 } 142 143 static char * 144 history_str_get(zfs_cmd_t *zc) 145 { 146 char *buf; 147 148 if (zc->zc_history == NULL) 149 return (NULL); 150 151 buf = kmem_alloc(HIS_MAX_RECORD_LEN, KM_SLEEP); 152 if (copyinstr((void *)(uintptr_t)zc->zc_history, 153 buf, HIS_MAX_RECORD_LEN, NULL) != 0) { 154 history_str_free(buf); 155 return (NULL); 156 } 157 158 buf[HIS_MAX_RECORD_LEN -1] = '\0'; 159 160 return (buf); 161 } 162 163 /* 164 * Check to see if the named dataset is currently defined as bootable 165 */ 166 static boolean_t 167 zfs_is_bootfs(const char *name) 168 { 169 spa_t *spa; 170 boolean_t ret = B_FALSE; 171 172 if (spa_open(name, &spa, FTAG) == 0) { 173 if (spa->spa_bootfs) { 174 objset_t *os; 175 176 if (dmu_objset_open(name, DMU_OST_ZFS, 177 DS_MODE_USER | DS_MODE_READONLY, &os) == 0) { 178 ret = (dmu_objset_id(os) == spa->spa_bootfs); 179 dmu_objset_close(os); 180 } 181 } 182 spa_close(spa, FTAG); 183 } 184 return (ret); 185 } 186 187 /* 188 * zfs_earlier_version 189 * 190 * Return non-zero if the spa version is less than requested version. 191 */ 192 static int 193 zfs_earlier_version(const char *name, int version) 194 { 195 spa_t *spa; 196 197 if (spa_open(name, &spa, FTAG) == 0) { 198 if (spa_version(spa) < version) { 199 spa_close(spa, FTAG); 200 return (1); 201 } 202 spa_close(spa, FTAG); 203 } 204 return (0); 205 } 206 207 /* 208 * zpl_earlier_version 209 * 210 * Return TRUE if the ZPL version is less than requested version. 211 */ 212 static boolean_t 213 zpl_earlier_version(const char *name, int version) 214 { 215 objset_t *os; 216 boolean_t rc = B_TRUE; 217 218 if (dmu_objset_open(name, DMU_OST_ANY, 219 DS_MODE_USER | DS_MODE_READONLY, &os) == 0) { 220 uint64_t zplversion; 221 222 if (zfs_get_zplprop(os, ZFS_PROP_VERSION, &zplversion) == 0) 223 rc = zplversion < version; 224 dmu_objset_close(os); 225 } 226 return (rc); 227 } 228 229 static void 230 zfs_log_history(zfs_cmd_t *zc) 231 { 232 spa_t *spa; 233 char *buf; 234 235 if ((buf = history_str_get(zc)) == NULL) 236 return; 237 238 if (spa_open(zc->zc_name, &spa, FTAG) == 0) { 239 if (spa_version(spa) >= SPA_VERSION_ZPOOL_HISTORY) 240 (void) spa_history_log(spa, buf, LOG_CMD_NORMAL); 241 spa_close(spa, FTAG); 242 } 243 history_str_free(buf); 244 } 245 246 /* 247 * Policy for top-level read operations (list pools). Requires no privileges, 248 * and can be used in the local zone, as there is no associated dataset. 249 */ 250 /* ARGSUSED */ 251 static int 252 zfs_secpolicy_none(zfs_cmd_t *zc, cred_t *cr) 253 { 254 return (0); 255 } 256 257 /* 258 * Policy for dataset read operations (list children, get statistics). Requires 259 * no privileges, but must be visible in the local zone. 260 */ 261 /* ARGSUSED */ 262 static int 263 zfs_secpolicy_read(zfs_cmd_t *zc, cred_t *cr) 264 { 265 if (INGLOBALZONE(curproc) || 266 zone_dataset_visible(zc->zc_name, NULL)) 267 return (0); 268 269 return (ENOENT); 270 } 271 272 static int 273 zfs_dozonecheck(const char *dataset, cred_t *cr) 274 { 275 uint64_t zoned; 276 int writable = 1; 277 278 /* 279 * The dataset must be visible by this zone -- check this first 280 * so they don't see EPERM on something they shouldn't know about. 281 */ 282 if (!INGLOBALZONE(curproc) && 283 !zone_dataset_visible(dataset, &writable)) 284 return (ENOENT); 285 286 if (dsl_prop_get_integer(dataset, "zoned", &zoned, NULL)) 287 return (ENOENT); 288 289 if (INGLOBALZONE(curproc)) { 290 /* 291 * If the fs is zoned, only root can access it from the 292 * global zone. 293 */ 294 if (secpolicy_zfs(cr) && zoned) 295 return (EPERM); 296 } else { 297 /* 298 * If we are in a local zone, the 'zoned' property must be set. 299 */ 300 if (!zoned) 301 return (EPERM); 302 303 /* must be writable by this zone */ 304 if (!writable) 305 return (EPERM); 306 } 307 return (0); 308 } 309 310 int 311 zfs_secpolicy_write_perms(const char *name, const char *perm, cred_t *cr) 312 { 313 int error; 314 315 error = zfs_dozonecheck(name, cr); 316 if (error == 0) { 317 error = secpolicy_zfs(cr); 318 if (error) 319 error = dsl_deleg_access(name, perm, cr); 320 } 321 return (error); 322 } 323 324 static int 325 zfs_secpolicy_setprop(const char *name, zfs_prop_t prop, cred_t *cr) 326 { 327 /* 328 * Check permissions for special properties. 329 */ 330 switch (prop) { 331 case ZFS_PROP_ZONED: 332 /* 333 * Disallow setting of 'zoned' from within a local zone. 334 */ 335 if (!INGLOBALZONE(curproc)) 336 return (EPERM); 337 break; 338 339 case ZFS_PROP_QUOTA: 340 if (!INGLOBALZONE(curproc)) { 341 uint64_t zoned; 342 char setpoint[MAXNAMELEN]; 343 /* 344 * Unprivileged users are allowed to modify the 345 * quota on things *under* (ie. contained by) 346 * the thing they own. 347 */ 348 if (dsl_prop_get_integer(name, "zoned", &zoned, 349 setpoint)) 350 return (EPERM); 351 if (!zoned || strlen(name) <= strlen(setpoint)) 352 return (EPERM); 353 } 354 break; 355 } 356 357 return (zfs_secpolicy_write_perms(name, zfs_prop_to_name(prop), cr)); 358 } 359 360 int 361 zfs_secpolicy_fsacl(zfs_cmd_t *zc, cred_t *cr) 362 { 363 int error; 364 365 error = zfs_dozonecheck(zc->zc_name, cr); 366 if (error) 367 return (error); 368 369 /* 370 * permission to set permissions will be evaluated later in 371 * dsl_deleg_can_allow() 372 */ 373 return (0); 374 } 375 376 int 377 zfs_secpolicy_rollback(zfs_cmd_t *zc, cred_t *cr) 378 { 379 int error; 380 error = zfs_secpolicy_write_perms(zc->zc_name, 381 ZFS_DELEG_PERM_ROLLBACK, cr); 382 if (error == 0) 383 error = zfs_secpolicy_write_perms(zc->zc_name, 384 ZFS_DELEG_PERM_MOUNT, cr); 385 return (error); 386 } 387 388 int 389 zfs_secpolicy_send(zfs_cmd_t *zc, cred_t *cr) 390 { 391 return (zfs_secpolicy_write_perms(zc->zc_name, 392 ZFS_DELEG_PERM_SEND, cr)); 393 } 394 395 static int 396 zfs_secpolicy_deleg_share(zfs_cmd_t *zc, cred_t *cr) 397 { 398 vnode_t *vp; 399 int error; 400 401 if ((error = lookupname(zc->zc_value, UIO_SYSSPACE, 402 NO_FOLLOW, NULL, &vp)) != 0) 403 return (error); 404 405 /* Now make sure mntpnt and dataset are ZFS */ 406 407 if (vp->v_vfsp->vfs_fstype != zfsfstype || 408 (strcmp((char *)refstr_value(vp->v_vfsp->vfs_resource), 409 zc->zc_name) != 0)) { 410 VN_RELE(vp); 411 return (EPERM); 412 } 413 414 VN_RELE(vp); 415 return (dsl_deleg_access(zc->zc_name, 416 ZFS_DELEG_PERM_SHARE, cr)); 417 } 418 419 int 420 zfs_secpolicy_share(zfs_cmd_t *zc, cred_t *cr) 421 { 422 if (!INGLOBALZONE(curproc)) 423 return (EPERM); 424 425 if (secpolicy_nfs(cr) == 0) { 426 return (0); 427 } else { 428 return (zfs_secpolicy_deleg_share(zc, cr)); 429 } 430 } 431 432 int 433 zfs_secpolicy_smb_acl(zfs_cmd_t *zc, cred_t *cr) 434 { 435 if (!INGLOBALZONE(curproc)) 436 return (EPERM); 437 438 if (secpolicy_smb(cr) == 0) { 439 return (0); 440 } else { 441 return (zfs_secpolicy_deleg_share(zc, cr)); 442 } 443 } 444 445 static int 446 zfs_get_parent(const char *datasetname, char *parent, int parentsize) 447 { 448 char *cp; 449 450 /* 451 * Remove the @bla or /bla from the end of the name to get the parent. 452 */ 453 (void) strncpy(parent, datasetname, parentsize); 454 cp = strrchr(parent, '@'); 455 if (cp != NULL) { 456 cp[0] = '\0'; 457 } else { 458 cp = strrchr(parent, '/'); 459 if (cp == NULL) 460 return (ENOENT); 461 cp[0] = '\0'; 462 } 463 464 return (0); 465 } 466 467 int 468 zfs_secpolicy_destroy_perms(const char *name, cred_t *cr) 469 { 470 int error; 471 472 if ((error = zfs_secpolicy_write_perms(name, 473 ZFS_DELEG_PERM_MOUNT, cr)) != 0) 474 return (error); 475 476 return (zfs_secpolicy_write_perms(name, ZFS_DELEG_PERM_DESTROY, cr)); 477 } 478 479 static int 480 zfs_secpolicy_destroy(zfs_cmd_t *zc, cred_t *cr) 481 { 482 return (zfs_secpolicy_destroy_perms(zc->zc_name, cr)); 483 } 484 485 /* 486 * Must have sys_config privilege to check the iscsi permission 487 */ 488 /* ARGSUSED */ 489 static int 490 zfs_secpolicy_iscsi(zfs_cmd_t *zc, cred_t *cr) 491 { 492 return (secpolicy_zfs(cr)); 493 } 494 495 int 496 zfs_secpolicy_rename_perms(const char *from, const char *to, cred_t *cr) 497 { 498 char parentname[MAXNAMELEN]; 499 int error; 500 501 if ((error = zfs_secpolicy_write_perms(from, 502 ZFS_DELEG_PERM_RENAME, cr)) != 0) 503 return (error); 504 505 if ((error = zfs_secpolicy_write_perms(from, 506 ZFS_DELEG_PERM_MOUNT, cr)) != 0) 507 return (error); 508 509 if ((error = zfs_get_parent(to, parentname, 510 sizeof (parentname))) != 0) 511 return (error); 512 513 if ((error = zfs_secpolicy_write_perms(parentname, 514 ZFS_DELEG_PERM_CREATE, cr)) != 0) 515 return (error); 516 517 if ((error = zfs_secpolicy_write_perms(parentname, 518 ZFS_DELEG_PERM_MOUNT, cr)) != 0) 519 return (error); 520 521 return (error); 522 } 523 524 static int 525 zfs_secpolicy_rename(zfs_cmd_t *zc, cred_t *cr) 526 { 527 return (zfs_secpolicy_rename_perms(zc->zc_name, zc->zc_value, cr)); 528 } 529 530 static int 531 zfs_secpolicy_promote(zfs_cmd_t *zc, cred_t *cr) 532 { 533 char parentname[MAXNAMELEN]; 534 objset_t *clone; 535 int error; 536 537 error = zfs_secpolicy_write_perms(zc->zc_name, 538 ZFS_DELEG_PERM_PROMOTE, cr); 539 if (error) 540 return (error); 541 542 error = dmu_objset_open(zc->zc_name, DMU_OST_ANY, 543 DS_MODE_USER | DS_MODE_READONLY, &clone); 544 545 if (error == 0) { 546 dsl_dataset_t *pclone = NULL; 547 dsl_dir_t *dd; 548 dd = clone->os->os_dsl_dataset->ds_dir; 549 550 rw_enter(&dd->dd_pool->dp_config_rwlock, RW_READER); 551 error = dsl_dataset_hold_obj(dd->dd_pool, 552 dd->dd_phys->dd_origin_obj, FTAG, &pclone); 553 rw_exit(&dd->dd_pool->dp_config_rwlock); 554 if (error) { 555 dmu_objset_close(clone); 556 return (error); 557 } 558 559 error = zfs_secpolicy_write_perms(zc->zc_name, 560 ZFS_DELEG_PERM_MOUNT, cr); 561 562 dsl_dataset_name(pclone, parentname); 563 dmu_objset_close(clone); 564 dsl_dataset_rele(pclone, FTAG); 565 if (error == 0) 566 error = zfs_secpolicy_write_perms(parentname, 567 ZFS_DELEG_PERM_PROMOTE, cr); 568 } 569 return (error); 570 } 571 572 static int 573 zfs_secpolicy_receive(zfs_cmd_t *zc, cred_t *cr) 574 { 575 int error; 576 577 if ((error = zfs_secpolicy_write_perms(zc->zc_name, 578 ZFS_DELEG_PERM_RECEIVE, cr)) != 0) 579 return (error); 580 581 if ((error = zfs_secpolicy_write_perms(zc->zc_name, 582 ZFS_DELEG_PERM_MOUNT, cr)) != 0) 583 return (error); 584 585 return (zfs_secpolicy_write_perms(zc->zc_name, 586 ZFS_DELEG_PERM_CREATE, cr)); 587 } 588 589 int 590 zfs_secpolicy_snapshot_perms(const char *name, cred_t *cr) 591 { 592 int error; 593 594 if ((error = zfs_secpolicy_write_perms(name, 595 ZFS_DELEG_PERM_SNAPSHOT, cr)) != 0) 596 return (error); 597 598 error = zfs_secpolicy_write_perms(name, 599 ZFS_DELEG_PERM_MOUNT, cr); 600 601 return (error); 602 } 603 604 static int 605 zfs_secpolicy_snapshot(zfs_cmd_t *zc, cred_t *cr) 606 { 607 608 return (zfs_secpolicy_snapshot_perms(zc->zc_name, cr)); 609 } 610 611 static int 612 zfs_secpolicy_create(zfs_cmd_t *zc, cred_t *cr) 613 { 614 char parentname[MAXNAMELEN]; 615 int error; 616 617 if ((error = zfs_get_parent(zc->zc_name, parentname, 618 sizeof (parentname))) != 0) 619 return (error); 620 621 if (zc->zc_value[0] != '\0') { 622 if ((error = zfs_secpolicy_write_perms(zc->zc_value, 623 ZFS_DELEG_PERM_CLONE, cr)) != 0) 624 return (error); 625 } 626 627 if ((error = zfs_secpolicy_write_perms(parentname, 628 ZFS_DELEG_PERM_CREATE, cr)) != 0) 629 return (error); 630 631 error = zfs_secpolicy_write_perms(parentname, 632 ZFS_DELEG_PERM_MOUNT, cr); 633 634 return (error); 635 } 636 637 static int 638 zfs_secpolicy_umount(zfs_cmd_t *zc, cred_t *cr) 639 { 640 int error; 641 642 error = secpolicy_fs_unmount(cr, NULL); 643 if (error) { 644 error = dsl_deleg_access(zc->zc_name, ZFS_DELEG_PERM_MOUNT, cr); 645 } 646 return (error); 647 } 648 649 /* 650 * Policy for pool operations - create/destroy pools, add vdevs, etc. Requires 651 * SYS_CONFIG privilege, which is not available in a local zone. 652 */ 653 /* ARGSUSED */ 654 static int 655 zfs_secpolicy_config(zfs_cmd_t *zc, cred_t *cr) 656 { 657 if (secpolicy_sys_config(cr, B_FALSE) != 0) 658 return (EPERM); 659 660 return (0); 661 } 662 663 /* 664 * Just like zfs_secpolicy_config, except that we will check for 665 * mount permission on the dataset for permission to create/remove 666 * the minor nodes. 667 */ 668 static int 669 zfs_secpolicy_minor(zfs_cmd_t *zc, cred_t *cr) 670 { 671 if (secpolicy_sys_config(cr, B_FALSE) != 0) { 672 return (dsl_deleg_access(zc->zc_name, 673 ZFS_DELEG_PERM_MOUNT, cr)); 674 } 675 676 return (0); 677 } 678 679 /* 680 * Policy for fault injection. Requires all privileges. 681 */ 682 /* ARGSUSED */ 683 static int 684 zfs_secpolicy_inject(zfs_cmd_t *zc, cred_t *cr) 685 { 686 return (secpolicy_zinject(cr)); 687 } 688 689 static int 690 zfs_secpolicy_inherit(zfs_cmd_t *zc, cred_t *cr) 691 { 692 zfs_prop_t prop = zfs_name_to_prop(zc->zc_value); 693 694 if (prop == ZPROP_INVAL) { 695 if (!zfs_prop_user(zc->zc_value)) 696 return (EINVAL); 697 return (zfs_secpolicy_write_perms(zc->zc_name, 698 ZFS_DELEG_PERM_USERPROP, cr)); 699 } else { 700 if (!zfs_prop_inheritable(prop)) 701 return (EINVAL); 702 return (zfs_secpolicy_setprop(zc->zc_name, prop, cr)); 703 } 704 } 705 706 /* 707 * Returns the nvlist as specified by the user in the zfs_cmd_t. 708 */ 709 static int 710 get_nvlist(uint64_t nvl, uint64_t size, nvlist_t **nvp) 711 { 712 char *packed; 713 int error; 714 nvlist_t *list = NULL; 715 716 /* 717 * Read in and unpack the user-supplied nvlist. 718 */ 719 if (size == 0) 720 return (EINVAL); 721 722 packed = kmem_alloc(size, KM_SLEEP); 723 724 if ((error = xcopyin((void *)(uintptr_t)nvl, packed, size)) != 0) { 725 kmem_free(packed, size); 726 return (error); 727 } 728 729 if ((error = nvlist_unpack(packed, size, &list, 0)) != 0) { 730 kmem_free(packed, size); 731 return (error); 732 } 733 734 kmem_free(packed, size); 735 736 *nvp = list; 737 return (0); 738 } 739 740 static int 741 put_nvlist(zfs_cmd_t *zc, nvlist_t *nvl) 742 { 743 char *packed = NULL; 744 size_t size; 745 int error; 746 747 VERIFY(nvlist_size(nvl, &size, NV_ENCODE_NATIVE) == 0); 748 749 if (size > zc->zc_nvlist_dst_size) { 750 error = ENOMEM; 751 } else { 752 packed = kmem_alloc(size, KM_SLEEP); 753 VERIFY(nvlist_pack(nvl, &packed, &size, NV_ENCODE_NATIVE, 754 KM_SLEEP) == 0); 755 error = xcopyout(packed, (void *)(uintptr_t)zc->zc_nvlist_dst, 756 size); 757 kmem_free(packed, size); 758 } 759 760 zc->zc_nvlist_dst_size = size; 761 return (error); 762 } 763 764 static int 765 zfs_ioc_pool_create(zfs_cmd_t *zc) 766 { 767 int error; 768 nvlist_t *config, *props = NULL; 769 nvlist_t *rootprops = NULL; 770 nvlist_t *zplprops = NULL; 771 char *buf; 772 773 if (error = get_nvlist(zc->zc_nvlist_conf, zc->zc_nvlist_conf_size, 774 &config)) 775 return (error); 776 777 if (zc->zc_nvlist_src_size != 0 && (error = 778 get_nvlist(zc->zc_nvlist_src, zc->zc_nvlist_src_size, &props))) { 779 nvlist_free(config); 780 return (error); 781 } 782 783 if (props) { 784 nvlist_t *nvl = NULL; 785 uint64_t version = SPA_VERSION; 786 787 (void) nvlist_lookup_uint64(props, 788 zpool_prop_to_name(ZPOOL_PROP_VERSION), &version); 789 if (version < SPA_VERSION_INITIAL || version > SPA_VERSION) { 790 error = EINVAL; 791 goto pool_props_bad; 792 } 793 (void) nvlist_lookup_nvlist(props, ZPOOL_ROOTFS_PROPS, &nvl); 794 if (nvl) { 795 error = nvlist_dup(nvl, &rootprops, KM_SLEEP); 796 if (error != 0) { 797 nvlist_free(config); 798 nvlist_free(props); 799 return (error); 800 } 801 (void) nvlist_remove_all(props, ZPOOL_ROOTFS_PROPS); 802 } 803 VERIFY(nvlist_alloc(&zplprops, NV_UNIQUE_NAME, KM_SLEEP) == 0); 804 error = zfs_fill_zplprops_root(version, rootprops, 805 zplprops, NULL); 806 if (error) 807 goto pool_props_bad; 808 } 809 810 buf = history_str_get(zc); 811 812 error = spa_create(zc->zc_name, config, props, buf, zplprops); 813 814 /* 815 * Set the remaining root properties 816 */ 817 if (!error && 818 (error = zfs_set_prop_nvlist(zc->zc_name, rootprops)) != 0) 819 (void) spa_destroy(zc->zc_name); 820 821 if (buf != NULL) 822 history_str_free(buf); 823 824 pool_props_bad: 825 nvlist_free(rootprops); 826 nvlist_free(zplprops); 827 nvlist_free(config); 828 nvlist_free(props); 829 830 return (error); 831 } 832 833 static int 834 zfs_ioc_pool_destroy(zfs_cmd_t *zc) 835 { 836 int error; 837 zfs_log_history(zc); 838 error = spa_destroy(zc->zc_name); 839 return (error); 840 } 841 842 static int 843 zfs_ioc_pool_import(zfs_cmd_t *zc) 844 { 845 int error; 846 nvlist_t *config, *props = NULL; 847 uint64_t guid; 848 849 if ((error = get_nvlist(zc->zc_nvlist_conf, zc->zc_nvlist_conf_size, 850 &config)) != 0) 851 return (error); 852 853 if (zc->zc_nvlist_src_size != 0 && (error = 854 get_nvlist(zc->zc_nvlist_src, zc->zc_nvlist_src_size, &props))) { 855 nvlist_free(config); 856 return (error); 857 } 858 859 if (nvlist_lookup_uint64(config, ZPOOL_CONFIG_POOL_GUID, &guid) != 0 || 860 guid != zc->zc_guid) 861 error = EINVAL; 862 else if (zc->zc_cookie) 863 error = spa_import_faulted(zc->zc_name, config, 864 props); 865 else 866 error = spa_import(zc->zc_name, config, props); 867 868 nvlist_free(config); 869 870 if (props) 871 nvlist_free(props); 872 873 return (error); 874 } 875 876 static int 877 zfs_ioc_pool_export(zfs_cmd_t *zc) 878 { 879 int error; 880 boolean_t force = (boolean_t)zc->zc_cookie; 881 boolean_t hardforce = (boolean_t)zc->zc_guid; 882 883 zfs_log_history(zc); 884 error = spa_export(zc->zc_name, NULL, force, hardforce); 885 return (error); 886 } 887 888 static int 889 zfs_ioc_pool_configs(zfs_cmd_t *zc) 890 { 891 nvlist_t *configs; 892 int error; 893 894 if ((configs = spa_all_configs(&zc->zc_cookie)) == NULL) 895 return (EEXIST); 896 897 error = put_nvlist(zc, configs); 898 899 nvlist_free(configs); 900 901 return (error); 902 } 903 904 static int 905 zfs_ioc_pool_stats(zfs_cmd_t *zc) 906 { 907 nvlist_t *config; 908 int error; 909 int ret = 0; 910 911 error = spa_get_stats(zc->zc_name, &config, zc->zc_value, 912 sizeof (zc->zc_value)); 913 914 if (config != NULL) { 915 ret = put_nvlist(zc, config); 916 nvlist_free(config); 917 918 /* 919 * The config may be present even if 'error' is non-zero. 920 * In this case we return success, and preserve the real errno 921 * in 'zc_cookie'. 922 */ 923 zc->zc_cookie = error; 924 } else { 925 ret = error; 926 } 927 928 return (ret); 929 } 930 931 /* 932 * Try to import the given pool, returning pool stats as appropriate so that 933 * user land knows which devices are available and overall pool health. 934 */ 935 static int 936 zfs_ioc_pool_tryimport(zfs_cmd_t *zc) 937 { 938 nvlist_t *tryconfig, *config; 939 int error; 940 941 if ((error = get_nvlist(zc->zc_nvlist_conf, zc->zc_nvlist_conf_size, 942 &tryconfig)) != 0) 943 return (error); 944 945 config = spa_tryimport(tryconfig); 946 947 nvlist_free(tryconfig); 948 949 if (config == NULL) 950 return (EINVAL); 951 952 error = put_nvlist(zc, config); 953 nvlist_free(config); 954 955 return (error); 956 } 957 958 static int 959 zfs_ioc_pool_scrub(zfs_cmd_t *zc) 960 { 961 spa_t *spa; 962 int error; 963 964 if ((error = spa_open(zc->zc_name, &spa, FTAG)) != 0) 965 return (error); 966 967 error = spa_scrub(spa, zc->zc_cookie); 968 969 spa_close(spa, FTAG); 970 971 return (error); 972 } 973 974 static int 975 zfs_ioc_pool_freeze(zfs_cmd_t *zc) 976 { 977 spa_t *spa; 978 int error; 979 980 error = spa_open(zc->zc_name, &spa, FTAG); 981 if (error == 0) { 982 spa_freeze(spa); 983 spa_close(spa, FTAG); 984 } 985 return (error); 986 } 987 988 static int 989 zfs_ioc_pool_upgrade(zfs_cmd_t *zc) 990 { 991 spa_t *spa; 992 int error; 993 994 if ((error = spa_open(zc->zc_name, &spa, FTAG)) != 0) 995 return (error); 996 997 if (zc->zc_cookie < spa_version(spa) || zc->zc_cookie > SPA_VERSION) { 998 spa_close(spa, FTAG); 999 return (EINVAL); 1000 } 1001 1002 spa_upgrade(spa, zc->zc_cookie); 1003 spa_close(spa, FTAG); 1004 1005 return (error); 1006 } 1007 1008 static int 1009 zfs_ioc_pool_get_history(zfs_cmd_t *zc) 1010 { 1011 spa_t *spa; 1012 char *hist_buf; 1013 uint64_t size; 1014 int error; 1015 1016 if ((size = zc->zc_history_len) == 0) 1017 return (EINVAL); 1018 1019 if ((error = spa_open(zc->zc_name, &spa, FTAG)) != 0) 1020 return (error); 1021 1022 if (spa_version(spa) < SPA_VERSION_ZPOOL_HISTORY) { 1023 spa_close(spa, FTAG); 1024 return (ENOTSUP); 1025 } 1026 1027 hist_buf = kmem_alloc(size, KM_SLEEP); 1028 if ((error = spa_history_get(spa, &zc->zc_history_offset, 1029 &zc->zc_history_len, hist_buf)) == 0) { 1030 error = xcopyout(hist_buf, 1031 (char *)(uintptr_t)zc->zc_history, 1032 zc->zc_history_len); 1033 } 1034 1035 spa_close(spa, FTAG); 1036 kmem_free(hist_buf, size); 1037 return (error); 1038 } 1039 1040 static int 1041 zfs_ioc_dsobj_to_dsname(zfs_cmd_t *zc) 1042 { 1043 int error; 1044 1045 if (error = dsl_dsobj_to_dsname(zc->zc_name, zc->zc_obj, zc->zc_value)) 1046 return (error); 1047 1048 return (0); 1049 } 1050 1051 static int 1052 zfs_ioc_obj_to_path(zfs_cmd_t *zc) 1053 { 1054 objset_t *osp; 1055 int error; 1056 1057 if ((error = dmu_objset_open(zc->zc_name, DMU_OST_ZFS, 1058 DS_MODE_USER | DS_MODE_READONLY, &osp)) != 0) 1059 return (error); 1060 error = zfs_obj_to_path(osp, zc->zc_obj, zc->zc_value, 1061 sizeof (zc->zc_value)); 1062 dmu_objset_close(osp); 1063 1064 return (error); 1065 } 1066 1067 static int 1068 zfs_ioc_vdev_add(zfs_cmd_t *zc) 1069 { 1070 spa_t *spa; 1071 int error; 1072 nvlist_t *config, **l2cache, **spares; 1073 uint_t nl2cache = 0, nspares = 0; 1074 1075 error = spa_open(zc->zc_name, &spa, FTAG); 1076 if (error != 0) 1077 return (error); 1078 1079 error = get_nvlist(zc->zc_nvlist_conf, zc->zc_nvlist_conf_size, 1080 &config); 1081 (void) nvlist_lookup_nvlist_array(config, ZPOOL_CONFIG_L2CACHE, 1082 &l2cache, &nl2cache); 1083 1084 (void) nvlist_lookup_nvlist_array(config, ZPOOL_CONFIG_SPARES, 1085 &spares, &nspares); 1086 1087 /* 1088 * A root pool with concatenated devices is not supported. 1089 * Thus, can not add a device to a root pool. 1090 * 1091 * Intent log device can not be added to a rootpool because 1092 * during mountroot, zil is replayed, a seperated log device 1093 * can not be accessed during the mountroot time. 1094 * 1095 * l2cache and spare devices are ok to be added to a rootpool. 1096 */ 1097 if (spa->spa_bootfs != 0 && nl2cache == 0 && nspares == 0) { 1098 spa_close(spa, FTAG); 1099 return (EDOM); 1100 } 1101 1102 if (error == 0) { 1103 error = spa_vdev_add(spa, config); 1104 nvlist_free(config); 1105 } 1106 spa_close(spa, FTAG); 1107 return (error); 1108 } 1109 1110 static int 1111 zfs_ioc_vdev_remove(zfs_cmd_t *zc) 1112 { 1113 spa_t *spa; 1114 int error; 1115 1116 error = spa_open(zc->zc_name, &spa, FTAG); 1117 if (error != 0) 1118 return (error); 1119 error = spa_vdev_remove(spa, zc->zc_guid, B_FALSE); 1120 spa_close(spa, FTAG); 1121 return (error); 1122 } 1123 1124 static int 1125 zfs_ioc_vdev_set_state(zfs_cmd_t *zc) 1126 { 1127 spa_t *spa; 1128 int error; 1129 vdev_state_t newstate = VDEV_STATE_UNKNOWN; 1130 1131 if ((error = spa_open(zc->zc_name, &spa, FTAG)) != 0) 1132 return (error); 1133 switch (zc->zc_cookie) { 1134 case VDEV_STATE_ONLINE: 1135 error = vdev_online(spa, zc->zc_guid, zc->zc_obj, &newstate); 1136 break; 1137 1138 case VDEV_STATE_OFFLINE: 1139 error = vdev_offline(spa, zc->zc_guid, zc->zc_obj); 1140 break; 1141 1142 case VDEV_STATE_FAULTED: 1143 error = vdev_fault(spa, zc->zc_guid); 1144 break; 1145 1146 case VDEV_STATE_DEGRADED: 1147 error = vdev_degrade(spa, zc->zc_guid); 1148 break; 1149 1150 default: 1151 error = EINVAL; 1152 } 1153 zc->zc_cookie = newstate; 1154 spa_close(spa, FTAG); 1155 return (error); 1156 } 1157 1158 static int 1159 zfs_ioc_vdev_attach(zfs_cmd_t *zc) 1160 { 1161 spa_t *spa; 1162 int replacing = zc->zc_cookie; 1163 nvlist_t *config; 1164 int error; 1165 1166 if ((error = spa_open(zc->zc_name, &spa, FTAG)) != 0) 1167 return (error); 1168 1169 if ((error = get_nvlist(zc->zc_nvlist_conf, zc->zc_nvlist_conf_size, 1170 &config)) == 0) { 1171 error = spa_vdev_attach(spa, zc->zc_guid, config, replacing); 1172 nvlist_free(config); 1173 } 1174 1175 spa_close(spa, FTAG); 1176 return (error); 1177 } 1178 1179 static int 1180 zfs_ioc_vdev_detach(zfs_cmd_t *zc) 1181 { 1182 spa_t *spa; 1183 int error; 1184 1185 if ((error = spa_open(zc->zc_name, &spa, FTAG)) != 0) 1186 return (error); 1187 1188 error = spa_vdev_detach(spa, zc->zc_guid, 0, B_FALSE); 1189 1190 spa_close(spa, FTAG); 1191 return (error); 1192 } 1193 1194 static int 1195 zfs_ioc_vdev_setpath(zfs_cmd_t *zc) 1196 { 1197 spa_t *spa; 1198 char *path = zc->zc_value; 1199 uint64_t guid = zc->zc_guid; 1200 int error; 1201 1202 error = spa_open(zc->zc_name, &spa, FTAG); 1203 if (error != 0) 1204 return (error); 1205 1206 error = spa_vdev_setpath(spa, guid, path); 1207 spa_close(spa, FTAG); 1208 return (error); 1209 } 1210 1211 /* 1212 * inputs: 1213 * zc_name name of filesystem 1214 * zc_nvlist_dst_size size of buffer for property nvlist 1215 * 1216 * outputs: 1217 * zc_objset_stats stats 1218 * zc_nvlist_dst property nvlist 1219 * zc_nvlist_dst_size size of property nvlist 1220 */ 1221 static int 1222 zfs_ioc_objset_stats(zfs_cmd_t *zc) 1223 { 1224 objset_t *os = NULL; 1225 int error; 1226 nvlist_t *nv; 1227 1228 if (error = dmu_objset_open(zc->zc_name, 1229 DMU_OST_ANY, DS_MODE_USER | DS_MODE_READONLY, &os)) 1230 return (error); 1231 1232 dmu_objset_fast_stat(os, &zc->zc_objset_stats); 1233 1234 if (zc->zc_nvlist_dst != 0 && 1235 (error = dsl_prop_get_all(os, &nv, FALSE)) == 0) { 1236 dmu_objset_stats(os, nv); 1237 /* 1238 * NB: zvol_get_stats() will read the objset contents, 1239 * which we aren't supposed to do with a 1240 * DS_MODE_USER hold, because it could be 1241 * inconsistent. So this is a bit of a workaround... 1242 */ 1243 if (!zc->zc_objset_stats.dds_inconsistent) { 1244 if (dmu_objset_type(os) == DMU_OST_ZVOL) 1245 VERIFY(zvol_get_stats(os, nv) == 0); 1246 } 1247 error = put_nvlist(zc, nv); 1248 nvlist_free(nv); 1249 } 1250 1251 dmu_objset_close(os); 1252 return (error); 1253 } 1254 1255 static int 1256 nvl_add_zplprop(objset_t *os, nvlist_t *props, zfs_prop_t prop) 1257 { 1258 uint64_t value; 1259 int error; 1260 1261 /* 1262 * zfs_get_zplprop() will either find a value or give us 1263 * the default value (if there is one). 1264 */ 1265 if ((error = zfs_get_zplprop(os, prop, &value)) != 0) 1266 return (error); 1267 VERIFY(nvlist_add_uint64(props, zfs_prop_to_name(prop), value) == 0); 1268 return (0); 1269 } 1270 1271 /* 1272 * inputs: 1273 * zc_name name of filesystem 1274 * zc_nvlist_dst_size size of buffer for zpl property nvlist 1275 * 1276 * outputs: 1277 * zc_nvlist_dst zpl property nvlist 1278 * zc_nvlist_dst_size size of zpl property nvlist 1279 */ 1280 static int 1281 zfs_ioc_objset_zplprops(zfs_cmd_t *zc) 1282 { 1283 objset_t *os; 1284 int err; 1285 1286 if (err = dmu_objset_open(zc->zc_name, 1287 DMU_OST_ANY, DS_MODE_USER | DS_MODE_READONLY, &os)) 1288 return (err); 1289 1290 dmu_objset_fast_stat(os, &zc->zc_objset_stats); 1291 1292 /* 1293 * NB: nvl_add_zplprop() will read the objset contents, 1294 * which we aren't supposed to do with a DS_MODE_USER 1295 * hold, because it could be inconsistent. 1296 */ 1297 if (zc->zc_nvlist_dst != NULL && 1298 !zc->zc_objset_stats.dds_inconsistent && 1299 dmu_objset_type(os) == DMU_OST_ZFS) { 1300 nvlist_t *nv; 1301 1302 VERIFY(nvlist_alloc(&nv, NV_UNIQUE_NAME, KM_SLEEP) == 0); 1303 if ((err = nvl_add_zplprop(os, nv, ZFS_PROP_VERSION)) == 0 && 1304 (err = nvl_add_zplprop(os, nv, ZFS_PROP_NORMALIZE)) == 0 && 1305 (err = nvl_add_zplprop(os, nv, ZFS_PROP_UTF8ONLY)) == 0 && 1306 (err = nvl_add_zplprop(os, nv, ZFS_PROP_CASE)) == 0) 1307 err = put_nvlist(zc, nv); 1308 nvlist_free(nv); 1309 } else { 1310 err = ENOENT; 1311 } 1312 dmu_objset_close(os); 1313 return (err); 1314 } 1315 1316 /* 1317 * inputs: 1318 * zc_name name of filesystem 1319 * zc_cookie zap cursor 1320 * zc_nvlist_dst_size size of buffer for property nvlist 1321 * 1322 * outputs: 1323 * zc_name name of next filesystem 1324 * zc_objset_stats stats 1325 * zc_nvlist_dst property nvlist 1326 * zc_nvlist_dst_size size of property nvlist 1327 */ 1328 static int 1329 zfs_ioc_dataset_list_next(zfs_cmd_t *zc) 1330 { 1331 objset_t *os; 1332 int error; 1333 char *p; 1334 1335 if (error = dmu_objset_open(zc->zc_name, 1336 DMU_OST_ANY, DS_MODE_USER | DS_MODE_READONLY, &os)) { 1337 if (error == ENOENT) 1338 error = ESRCH; 1339 return (error); 1340 } 1341 1342 p = strrchr(zc->zc_name, '/'); 1343 if (p == NULL || p[1] != '\0') 1344 (void) strlcat(zc->zc_name, "/", sizeof (zc->zc_name)); 1345 p = zc->zc_name + strlen(zc->zc_name); 1346 1347 /* 1348 * Pre-fetch the datasets. dmu_objset_prefetch() always returns 0 1349 * but is not declared void because its called by dmu_objset_find(). 1350 */ 1351 if (zc->zc_cookie == 0) { 1352 uint64_t cookie = 0; 1353 int len = sizeof (zc->zc_name) - (p - zc->zc_name); 1354 1355 while (dmu_dir_list_next(os, len, p, NULL, &cookie) == 0) 1356 (void) dmu_objset_prefetch(p, NULL); 1357 } 1358 1359 do { 1360 error = dmu_dir_list_next(os, 1361 sizeof (zc->zc_name) - (p - zc->zc_name), p, 1362 NULL, &zc->zc_cookie); 1363 if (error == ENOENT) 1364 error = ESRCH; 1365 } while (error == 0 && !INGLOBALZONE(curproc) && 1366 !zone_dataset_visible(zc->zc_name, NULL)); 1367 dmu_objset_close(os); 1368 1369 /* 1370 * If it's a hidden dataset (ie. with a '$' in its name), don't 1371 * try to get stats for it. Userland will skip over it. 1372 */ 1373 if (error == 0 && strchr(zc->zc_name, '$') == NULL) 1374 error = zfs_ioc_objset_stats(zc); /* fill in the stats */ 1375 1376 return (error); 1377 } 1378 1379 /* 1380 * inputs: 1381 * zc_name name of filesystem 1382 * zc_cookie zap cursor 1383 * zc_nvlist_dst_size size of buffer for property nvlist 1384 * 1385 * outputs: 1386 * zc_name name of next snapshot 1387 * zc_objset_stats stats 1388 * zc_nvlist_dst property nvlist 1389 * zc_nvlist_dst_size size of property nvlist 1390 */ 1391 static int 1392 zfs_ioc_snapshot_list_next(zfs_cmd_t *zc) 1393 { 1394 objset_t *os; 1395 int error; 1396 1397 error = dmu_objset_open(zc->zc_name, 1398 DMU_OST_ANY, DS_MODE_USER | DS_MODE_READONLY, &os); 1399 if (error) 1400 return (error == ENOENT ? ESRCH : error); 1401 1402 if (zc->zc_cookie == 0) 1403 (void) dmu_objset_find(zc->zc_name, dmu_objset_prefetch, 1404 NULL, DS_FIND_SNAPSHOTS); 1405 /* 1406 * A dataset name of maximum length cannot have any snapshots, 1407 * so exit immediately. 1408 */ 1409 if (strlcat(zc->zc_name, "@", sizeof (zc->zc_name)) >= MAXNAMELEN) { 1410 dmu_objset_close(os); 1411 return (ESRCH); 1412 } 1413 1414 error = dmu_snapshot_list_next(os, 1415 sizeof (zc->zc_name) - strlen(zc->zc_name), 1416 zc->zc_name + strlen(zc->zc_name), NULL, &zc->zc_cookie, NULL); 1417 dmu_objset_close(os); 1418 if (error == 0) 1419 error = zfs_ioc_objset_stats(zc); /* fill in the stats */ 1420 else if (error == ENOENT) 1421 error = ESRCH; 1422 1423 /* if we failed, undo the @ that we tacked on to zc_name */ 1424 if (error) 1425 *strchr(zc->zc_name, '@') = '\0'; 1426 return (error); 1427 } 1428 1429 int 1430 zfs_set_prop_nvlist(const char *name, nvlist_t *nvl) 1431 { 1432 nvpair_t *elem; 1433 int error = 0; 1434 uint64_t intval; 1435 char *strval; 1436 nvlist_t *genericnvl; 1437 1438 /* 1439 * First validate permission to set all of the properties 1440 */ 1441 elem = NULL; 1442 while ((elem = nvlist_next_nvpair(nvl, elem)) != NULL) { 1443 const char *propname = nvpair_name(elem); 1444 zfs_prop_t prop = zfs_name_to_prop(propname); 1445 1446 if (prop == ZPROP_INVAL) { 1447 /* 1448 * If this is a user-defined property, it must be a 1449 * string, and there is no further validation to do. 1450 */ 1451 if (!zfs_prop_user(propname) || 1452 nvpair_type(elem) != DATA_TYPE_STRING) 1453 return (EINVAL); 1454 1455 if (error = zfs_secpolicy_write_perms(name, 1456 ZFS_DELEG_PERM_USERPROP, CRED())) 1457 return (error); 1458 continue; 1459 } 1460 1461 if ((error = zfs_secpolicy_setprop(name, prop, CRED())) != 0) 1462 return (error); 1463 1464 /* 1465 * Check that this value is valid for this pool version 1466 */ 1467 switch (prop) { 1468 case ZFS_PROP_COMPRESSION: 1469 /* 1470 * If the user specified gzip compression, make sure 1471 * the SPA supports it. We ignore any errors here since 1472 * we'll catch them later. 1473 */ 1474 if (nvpair_type(elem) == DATA_TYPE_UINT64 && 1475 nvpair_value_uint64(elem, &intval) == 0) { 1476 if (intval >= ZIO_COMPRESS_GZIP_1 && 1477 intval <= ZIO_COMPRESS_GZIP_9 && 1478 zfs_earlier_version(name, 1479 SPA_VERSION_GZIP_COMPRESSION)) 1480 return (ENOTSUP); 1481 1482 /* 1483 * If this is a bootable dataset then 1484 * verify that the compression algorithm 1485 * is supported for booting. We must return 1486 * something other than ENOTSUP since it 1487 * implies a downrev pool version. 1488 */ 1489 if (zfs_is_bootfs(name) && 1490 !BOOTFS_COMPRESS_VALID(intval)) 1491 return (ERANGE); 1492 } 1493 break; 1494 1495 case ZFS_PROP_COPIES: 1496 if (zfs_earlier_version(name, 1497 SPA_VERSION_DITTO_BLOCKS)) 1498 return (ENOTSUP); 1499 break; 1500 1501 case ZFS_PROP_SHARESMB: 1502 if (zpl_earlier_version(name, ZPL_VERSION_FUID)) 1503 return (ENOTSUP); 1504 break; 1505 1506 case ZFS_PROP_ACLINHERIT: 1507 if (nvpair_type(elem) == DATA_TYPE_UINT64 && 1508 nvpair_value_uint64(elem, &intval) == 0) 1509 if (intval == ZFS_ACL_PASSTHROUGH_X && 1510 zfs_earlier_version(name, 1511 SPA_VERSION_PASSTHROUGH_X)) 1512 return (ENOTSUP); 1513 } 1514 } 1515 1516 VERIFY(nvlist_alloc(&genericnvl, NV_UNIQUE_NAME, KM_SLEEP) == 0); 1517 elem = NULL; 1518 while ((elem = nvlist_next_nvpair(nvl, elem)) != NULL) { 1519 const char *propname = nvpair_name(elem); 1520 zfs_prop_t prop = zfs_name_to_prop(propname); 1521 1522 if (prop == ZPROP_INVAL) { 1523 VERIFY(nvpair_value_string(elem, &strval) == 0); 1524 error = dsl_prop_set(name, propname, 1, 1525 strlen(strval) + 1, strval); 1526 if (error == 0) 1527 continue; 1528 else 1529 goto out; 1530 } 1531 1532 switch (prop) { 1533 case ZFS_PROP_QUOTA: 1534 if ((error = nvpair_value_uint64(elem, &intval)) != 0 || 1535 (error = dsl_dir_set_quota(name, intval)) != 0) 1536 goto out; 1537 break; 1538 1539 case ZFS_PROP_REFQUOTA: 1540 if ((error = nvpair_value_uint64(elem, &intval)) != 0 || 1541 (error = dsl_dataset_set_quota(name, intval)) != 0) 1542 goto out; 1543 break; 1544 1545 case ZFS_PROP_RESERVATION: 1546 if ((error = nvpair_value_uint64(elem, &intval)) != 0 || 1547 (error = dsl_dir_set_reservation(name, 1548 intval)) != 0) 1549 goto out; 1550 break; 1551 1552 case ZFS_PROP_REFRESERVATION: 1553 if ((error = nvpair_value_uint64(elem, &intval)) != 0 || 1554 (error = dsl_dataset_set_reservation(name, 1555 intval)) != 0) 1556 goto out; 1557 break; 1558 1559 case ZFS_PROP_VOLSIZE: 1560 if ((error = nvpair_value_uint64(elem, &intval)) != 0 || 1561 (error = zvol_set_volsize(name, 1562 ddi_driver_major(zfs_dip), intval)) != 0) 1563 goto out; 1564 break; 1565 1566 case ZFS_PROP_VOLBLOCKSIZE: 1567 if ((error = nvpair_value_uint64(elem, &intval)) != 0 || 1568 (error = zvol_set_volblocksize(name, intval)) != 0) 1569 goto out; 1570 break; 1571 1572 case ZFS_PROP_VERSION: 1573 if ((error = nvpair_value_uint64(elem, &intval)) != 0 || 1574 (error = zfs_set_version(name, intval)) != 0) 1575 goto out; 1576 break; 1577 1578 default: 1579 if (nvpair_type(elem) == DATA_TYPE_STRING) { 1580 if (zfs_prop_get_type(prop) != 1581 PROP_TYPE_STRING) { 1582 error = EINVAL; 1583 goto out; 1584 } 1585 } else if (nvpair_type(elem) == DATA_TYPE_UINT64) { 1586 const char *unused; 1587 1588 VERIFY(nvpair_value_uint64(elem, &intval) == 0); 1589 1590 switch (zfs_prop_get_type(prop)) { 1591 case PROP_TYPE_NUMBER: 1592 break; 1593 case PROP_TYPE_STRING: 1594 error = EINVAL; 1595 goto out; 1596 case PROP_TYPE_INDEX: 1597 if (zfs_prop_index_to_string(prop, 1598 intval, &unused) != 0) { 1599 error = EINVAL; 1600 goto out; 1601 } 1602 break; 1603 default: 1604 cmn_err(CE_PANIC, 1605 "unknown property type"); 1606 break; 1607 } 1608 } else { 1609 error = EINVAL; 1610 goto out; 1611 } 1612 if ((error = nvlist_add_nvpair(genericnvl, elem)) != 0) 1613 goto out; 1614 } 1615 } 1616 1617 if (nvlist_next_nvpair(genericnvl, NULL) != NULL) { 1618 error = dsl_props_set(name, genericnvl); 1619 } 1620 out: 1621 nvlist_free(genericnvl); 1622 return (error); 1623 } 1624 1625 /* 1626 * inputs: 1627 * zc_name name of filesystem 1628 * zc_value name of property to set 1629 * zc_nvlist_src{_size} nvlist of properties to apply 1630 * zc_cookie clear existing local props? 1631 * 1632 * outputs: none 1633 */ 1634 static int 1635 zfs_ioc_set_prop(zfs_cmd_t *zc) 1636 { 1637 nvlist_t *nvl; 1638 int error; 1639 1640 if ((error = get_nvlist(zc->zc_nvlist_src, zc->zc_nvlist_src_size, 1641 &nvl)) != 0) 1642 return (error); 1643 1644 if (zc->zc_cookie) { 1645 nvlist_t *origprops; 1646 objset_t *os; 1647 1648 if (dmu_objset_open(zc->zc_name, DMU_OST_ANY, 1649 DS_MODE_USER | DS_MODE_READONLY, &os) == 0) { 1650 if (dsl_prop_get_all(os, &origprops, TRUE) == 0) { 1651 clear_props(zc->zc_name, origprops, nvl); 1652 nvlist_free(origprops); 1653 } 1654 dmu_objset_close(os); 1655 } 1656 1657 } 1658 1659 error = zfs_set_prop_nvlist(zc->zc_name, nvl); 1660 1661 nvlist_free(nvl); 1662 return (error); 1663 } 1664 1665 /* 1666 * inputs: 1667 * zc_name name of filesystem 1668 * zc_value name of property to inherit 1669 * 1670 * outputs: none 1671 */ 1672 static int 1673 zfs_ioc_inherit_prop(zfs_cmd_t *zc) 1674 { 1675 /* the property name has been validated by zfs_secpolicy_inherit() */ 1676 return (dsl_prop_set(zc->zc_name, zc->zc_value, 0, 0, NULL)); 1677 } 1678 1679 static int 1680 zfs_ioc_pool_set_props(zfs_cmd_t *zc) 1681 { 1682 nvlist_t *props; 1683 spa_t *spa; 1684 int error; 1685 nvpair_t *elem; 1686 1687 if ((error = get_nvlist(zc->zc_nvlist_src, zc->zc_nvlist_src_size, 1688 &props))) 1689 return (error); 1690 1691 /* 1692 * If the only property is the configfile, then just do a spa_lookup() 1693 * to handle the faulted case. 1694 */ 1695 elem = nvlist_next_nvpair(props, NULL); 1696 if (elem != NULL && strcmp(nvpair_name(elem), 1697 zpool_prop_to_name(ZPOOL_PROP_CACHEFILE)) == 0 && 1698 nvlist_next_nvpair(props, elem) == NULL) { 1699 mutex_enter(&spa_namespace_lock); 1700 if ((spa = spa_lookup(zc->zc_name)) != NULL) { 1701 spa_configfile_set(spa, props, B_FALSE); 1702 spa_config_sync(spa, B_FALSE, B_TRUE); 1703 } 1704 mutex_exit(&spa_namespace_lock); 1705 if (spa != NULL) 1706 return (0); 1707 } 1708 1709 if ((error = spa_open(zc->zc_name, &spa, FTAG)) != 0) { 1710 nvlist_free(props); 1711 return (error); 1712 } 1713 1714 error = spa_prop_set(spa, props); 1715 1716 nvlist_free(props); 1717 spa_close(spa, FTAG); 1718 1719 return (error); 1720 } 1721 1722 static int 1723 zfs_ioc_pool_get_props(zfs_cmd_t *zc) 1724 { 1725 spa_t *spa; 1726 int error; 1727 nvlist_t *nvp = NULL; 1728 1729 if ((error = spa_open(zc->zc_name, &spa, FTAG)) != 0) { 1730 /* 1731 * If the pool is faulted, there may be properties we can still 1732 * get (such as altroot and cachefile), so attempt to get them 1733 * anyway. 1734 */ 1735 mutex_enter(&spa_namespace_lock); 1736 if ((spa = spa_lookup(zc->zc_name)) != NULL) 1737 error = spa_prop_get(spa, &nvp); 1738 mutex_exit(&spa_namespace_lock); 1739 } else { 1740 error = spa_prop_get(spa, &nvp); 1741 spa_close(spa, FTAG); 1742 } 1743 1744 if (error == 0 && zc->zc_nvlist_dst != NULL) 1745 error = put_nvlist(zc, nvp); 1746 else 1747 error = EFAULT; 1748 1749 nvlist_free(nvp); 1750 return (error); 1751 } 1752 1753 static int 1754 zfs_ioc_iscsi_perm_check(zfs_cmd_t *zc) 1755 { 1756 nvlist_t *nvp; 1757 int error; 1758 uint32_t uid; 1759 uint32_t gid; 1760 uint32_t *groups; 1761 uint_t group_cnt; 1762 cred_t *usercred; 1763 1764 if ((error = get_nvlist(zc->zc_nvlist_src, zc->zc_nvlist_src_size, 1765 &nvp)) != 0) { 1766 return (error); 1767 } 1768 1769 if ((error = nvlist_lookup_uint32(nvp, 1770 ZFS_DELEG_PERM_UID, &uid)) != 0) { 1771 nvlist_free(nvp); 1772 return (EPERM); 1773 } 1774 1775 if ((error = nvlist_lookup_uint32(nvp, 1776 ZFS_DELEG_PERM_GID, &gid)) != 0) { 1777 nvlist_free(nvp); 1778 return (EPERM); 1779 } 1780 1781 if ((error = nvlist_lookup_uint32_array(nvp, ZFS_DELEG_PERM_GROUPS, 1782 &groups, &group_cnt)) != 0) { 1783 nvlist_free(nvp); 1784 return (EPERM); 1785 } 1786 usercred = cralloc(); 1787 if ((crsetugid(usercred, uid, gid) != 0) || 1788 (crsetgroups(usercred, group_cnt, (gid_t *)groups) != 0)) { 1789 nvlist_free(nvp); 1790 crfree(usercred); 1791 return (EPERM); 1792 } 1793 nvlist_free(nvp); 1794 error = dsl_deleg_access(zc->zc_name, 1795 zfs_prop_to_name(ZFS_PROP_SHAREISCSI), usercred); 1796 crfree(usercred); 1797 return (error); 1798 } 1799 1800 /* 1801 * inputs: 1802 * zc_name name of filesystem 1803 * zc_nvlist_src{_size} nvlist of delegated permissions 1804 * zc_perm_action allow/unallow flag 1805 * 1806 * outputs: none 1807 */ 1808 static int 1809 zfs_ioc_set_fsacl(zfs_cmd_t *zc) 1810 { 1811 int error; 1812 nvlist_t *fsaclnv = NULL; 1813 1814 if ((error = get_nvlist(zc->zc_nvlist_src, zc->zc_nvlist_src_size, 1815 &fsaclnv)) != 0) 1816 return (error); 1817 1818 /* 1819 * Verify nvlist is constructed correctly 1820 */ 1821 if ((error = zfs_deleg_verify_nvlist(fsaclnv)) != 0) { 1822 nvlist_free(fsaclnv); 1823 return (EINVAL); 1824 } 1825 1826 /* 1827 * If we don't have PRIV_SYS_MOUNT, then validate 1828 * that user is allowed to hand out each permission in 1829 * the nvlist(s) 1830 */ 1831 1832 error = secpolicy_zfs(CRED()); 1833 if (error) { 1834 if (zc->zc_perm_action == B_FALSE) { 1835 error = dsl_deleg_can_allow(zc->zc_name, 1836 fsaclnv, CRED()); 1837 } else { 1838 error = dsl_deleg_can_unallow(zc->zc_name, 1839 fsaclnv, CRED()); 1840 } 1841 } 1842 1843 if (error == 0) 1844 error = dsl_deleg_set(zc->zc_name, fsaclnv, zc->zc_perm_action); 1845 1846 nvlist_free(fsaclnv); 1847 return (error); 1848 } 1849 1850 /* 1851 * inputs: 1852 * zc_name name of filesystem 1853 * 1854 * outputs: 1855 * zc_nvlist_src{_size} nvlist of delegated permissions 1856 */ 1857 static int 1858 zfs_ioc_get_fsacl(zfs_cmd_t *zc) 1859 { 1860 nvlist_t *nvp; 1861 int error; 1862 1863 if ((error = dsl_deleg_get(zc->zc_name, &nvp)) == 0) { 1864 error = put_nvlist(zc, nvp); 1865 nvlist_free(nvp); 1866 } 1867 1868 return (error); 1869 } 1870 1871 /* 1872 * inputs: 1873 * zc_name name of volume 1874 * 1875 * outputs: none 1876 */ 1877 static int 1878 zfs_ioc_create_minor(zfs_cmd_t *zc) 1879 { 1880 return (zvol_create_minor(zc->zc_name, ddi_driver_major(zfs_dip))); 1881 } 1882 1883 /* 1884 * inputs: 1885 * zc_name name of volume 1886 * 1887 * outputs: none 1888 */ 1889 static int 1890 zfs_ioc_remove_minor(zfs_cmd_t *zc) 1891 { 1892 return (zvol_remove_minor(zc->zc_name)); 1893 } 1894 1895 /* 1896 * Search the vfs list for a specified resource. Returns a pointer to it 1897 * or NULL if no suitable entry is found. The caller of this routine 1898 * is responsible for releasing the returned vfs pointer. 1899 */ 1900 static vfs_t * 1901 zfs_get_vfs(const char *resource) 1902 { 1903 struct vfs *vfsp; 1904 struct vfs *vfs_found = NULL; 1905 1906 vfs_list_read_lock(); 1907 vfsp = rootvfs; 1908 do { 1909 if (strcmp(refstr_value(vfsp->vfs_resource), resource) == 0) { 1910 VFS_HOLD(vfsp); 1911 vfs_found = vfsp; 1912 break; 1913 } 1914 vfsp = vfsp->vfs_next; 1915 } while (vfsp != rootvfs); 1916 vfs_list_unlock(); 1917 return (vfs_found); 1918 } 1919 1920 /* ARGSUSED */ 1921 static void 1922 zfs_create_cb(objset_t *os, void *arg, cred_t *cr, dmu_tx_t *tx) 1923 { 1924 zfs_creat_t *zct = arg; 1925 1926 zfs_create_fs(os, cr, zct->zct_zplprops, tx); 1927 } 1928 1929 #define ZFS_PROP_UNDEFINED ((uint64_t)-1) 1930 1931 /* 1932 * inputs: 1933 * createprops list of properties requested by creator 1934 * default_zplver zpl version to use if unspecified in createprops 1935 * fuids_ok fuids allowed in this version of the spa? 1936 * os parent objset pointer (NULL if root fs) 1937 * 1938 * outputs: 1939 * zplprops values for the zplprops we attach to the master node object 1940 * is_ci true if requested file system will be purely case-insensitive 1941 * 1942 * Determine the settings for utf8only, normalization and 1943 * casesensitivity. Specific values may have been requested by the 1944 * creator and/or we can inherit values from the parent dataset. If 1945 * the file system is of too early a vintage, a creator can not 1946 * request settings for these properties, even if the requested 1947 * setting is the default value. We don't actually want to create dsl 1948 * properties for these, so remove them from the source nvlist after 1949 * processing. 1950 */ 1951 static int 1952 zfs_fill_zplprops_impl(objset_t *os, uint64_t default_zplver, 1953 boolean_t fuids_ok, nvlist_t *createprops, nvlist_t *zplprops, 1954 boolean_t *is_ci) 1955 { 1956 uint64_t zplver = default_zplver; 1957 uint64_t sense = ZFS_PROP_UNDEFINED; 1958 uint64_t norm = ZFS_PROP_UNDEFINED; 1959 uint64_t u8 = ZFS_PROP_UNDEFINED; 1960 1961 ASSERT(zplprops != NULL); 1962 1963 /* 1964 * Pull out creator prop choices, if any. 1965 */ 1966 if (createprops) { 1967 (void) nvlist_lookup_uint64(createprops, 1968 zfs_prop_to_name(ZFS_PROP_VERSION), &zplver); 1969 (void) nvlist_lookup_uint64(createprops, 1970 zfs_prop_to_name(ZFS_PROP_NORMALIZE), &norm); 1971 (void) nvlist_remove_all(createprops, 1972 zfs_prop_to_name(ZFS_PROP_NORMALIZE)); 1973 (void) nvlist_lookup_uint64(createprops, 1974 zfs_prop_to_name(ZFS_PROP_UTF8ONLY), &u8); 1975 (void) nvlist_remove_all(createprops, 1976 zfs_prop_to_name(ZFS_PROP_UTF8ONLY)); 1977 (void) nvlist_lookup_uint64(createprops, 1978 zfs_prop_to_name(ZFS_PROP_CASE), &sense); 1979 (void) nvlist_remove_all(createprops, 1980 zfs_prop_to_name(ZFS_PROP_CASE)); 1981 } 1982 1983 /* 1984 * If the zpl version requested is whacky or the file system 1985 * or pool is version is too "young" to support normalization 1986 * and the creator tried to set a value for one of the props, 1987 * error out. 1988 */ 1989 if ((zplver < ZPL_VERSION_INITIAL || zplver > ZPL_VERSION) || 1990 (zplver >= ZPL_VERSION_FUID && !fuids_ok) || 1991 (zplver < ZPL_VERSION_NORMALIZATION && 1992 (norm != ZFS_PROP_UNDEFINED || u8 != ZFS_PROP_UNDEFINED || 1993 sense != ZFS_PROP_UNDEFINED))) 1994 return (ENOTSUP); 1995 1996 /* 1997 * Put the version in the zplprops 1998 */ 1999 VERIFY(nvlist_add_uint64(zplprops, 2000 zfs_prop_to_name(ZFS_PROP_VERSION), zplver) == 0); 2001 2002 if (norm == ZFS_PROP_UNDEFINED) 2003 VERIFY(zfs_get_zplprop(os, ZFS_PROP_NORMALIZE, &norm) == 0); 2004 VERIFY(nvlist_add_uint64(zplprops, 2005 zfs_prop_to_name(ZFS_PROP_NORMALIZE), norm) == 0); 2006 2007 /* 2008 * If we're normalizing, names must always be valid UTF-8 strings. 2009 */ 2010 if (norm) 2011 u8 = 1; 2012 if (u8 == ZFS_PROP_UNDEFINED) 2013 VERIFY(zfs_get_zplprop(os, ZFS_PROP_UTF8ONLY, &u8) == 0); 2014 VERIFY(nvlist_add_uint64(zplprops, 2015 zfs_prop_to_name(ZFS_PROP_UTF8ONLY), u8) == 0); 2016 2017 if (sense == ZFS_PROP_UNDEFINED) 2018 VERIFY(zfs_get_zplprop(os, ZFS_PROP_CASE, &sense) == 0); 2019 VERIFY(nvlist_add_uint64(zplprops, 2020 zfs_prop_to_name(ZFS_PROP_CASE), sense) == 0); 2021 2022 if (is_ci) 2023 *is_ci = (sense == ZFS_CASE_INSENSITIVE); 2024 2025 return (0); 2026 } 2027 2028 static int 2029 zfs_fill_zplprops(const char *dataset, nvlist_t *createprops, 2030 nvlist_t *zplprops, boolean_t *is_ci) 2031 { 2032 boolean_t fuids_ok = B_TRUE; 2033 uint64_t zplver = ZPL_VERSION; 2034 objset_t *os = NULL; 2035 char parentname[MAXNAMELEN]; 2036 char *cp; 2037 int error; 2038 2039 (void) strlcpy(parentname, dataset, sizeof (parentname)); 2040 cp = strrchr(parentname, '/'); 2041 ASSERT(cp != NULL); 2042 cp[0] = '\0'; 2043 2044 if (zfs_earlier_version(dataset, SPA_VERSION_FUID)) { 2045 zplver = ZPL_VERSION_FUID - 1; 2046 fuids_ok = B_FALSE; 2047 } 2048 2049 /* 2050 * Open parent object set so we can inherit zplprop values. 2051 */ 2052 if ((error = dmu_objset_open(parentname, DMU_OST_ANY, 2053 DS_MODE_USER | DS_MODE_READONLY, &os)) != 0) 2054 return (error); 2055 2056 error = zfs_fill_zplprops_impl(os, zplver, fuids_ok, createprops, 2057 zplprops, is_ci); 2058 dmu_objset_close(os); 2059 return (error); 2060 } 2061 2062 static int 2063 zfs_fill_zplprops_root(uint64_t spa_vers, nvlist_t *createprops, 2064 nvlist_t *zplprops, boolean_t *is_ci) 2065 { 2066 boolean_t fuids_ok = B_TRUE; 2067 uint64_t zplver = ZPL_VERSION; 2068 int error; 2069 2070 if (spa_vers < SPA_VERSION_FUID) { 2071 zplver = ZPL_VERSION_FUID - 1; 2072 fuids_ok = B_FALSE; 2073 } 2074 2075 error = zfs_fill_zplprops_impl(NULL, zplver, fuids_ok, createprops, 2076 zplprops, is_ci); 2077 return (error); 2078 } 2079 2080 /* 2081 * inputs: 2082 * zc_objset_type type of objset to create (fs vs zvol) 2083 * zc_name name of new objset 2084 * zc_value name of snapshot to clone from (may be empty) 2085 * zc_nvlist_src{_size} nvlist of properties to apply 2086 * 2087 * outputs: none 2088 */ 2089 static int 2090 zfs_ioc_create(zfs_cmd_t *zc) 2091 { 2092 objset_t *clone; 2093 int error = 0; 2094 zfs_creat_t zct; 2095 nvlist_t *nvprops = NULL; 2096 void (*cbfunc)(objset_t *os, void *arg, cred_t *cr, dmu_tx_t *tx); 2097 dmu_objset_type_t type = zc->zc_objset_type; 2098 2099 switch (type) { 2100 2101 case DMU_OST_ZFS: 2102 cbfunc = zfs_create_cb; 2103 break; 2104 2105 case DMU_OST_ZVOL: 2106 cbfunc = zvol_create_cb; 2107 break; 2108 2109 default: 2110 cbfunc = NULL; 2111 break; 2112 } 2113 if (strchr(zc->zc_name, '@') || 2114 strchr(zc->zc_name, '%')) 2115 return (EINVAL); 2116 2117 if (zc->zc_nvlist_src != NULL && 2118 (error = get_nvlist(zc->zc_nvlist_src, zc->zc_nvlist_src_size, 2119 &nvprops)) != 0) 2120 return (error); 2121 2122 zct.zct_zplprops = NULL; 2123 zct.zct_props = nvprops; 2124 2125 if (zc->zc_value[0] != '\0') { 2126 /* 2127 * We're creating a clone of an existing snapshot. 2128 */ 2129 zc->zc_value[sizeof (zc->zc_value) - 1] = '\0'; 2130 if (dataset_namecheck(zc->zc_value, NULL, NULL) != 0) { 2131 nvlist_free(nvprops); 2132 return (EINVAL); 2133 } 2134 2135 error = dmu_objset_open(zc->zc_value, type, 2136 DS_MODE_USER | DS_MODE_READONLY, &clone); 2137 if (error) { 2138 nvlist_free(nvprops); 2139 return (error); 2140 } 2141 2142 error = dmu_objset_create(zc->zc_name, type, clone, 0, 2143 NULL, NULL); 2144 if (error) { 2145 dmu_objset_close(clone); 2146 nvlist_free(nvprops); 2147 return (error); 2148 } 2149 dmu_objset_close(clone); 2150 } else { 2151 boolean_t is_insensitive = B_FALSE; 2152 2153 if (cbfunc == NULL) { 2154 nvlist_free(nvprops); 2155 return (EINVAL); 2156 } 2157 2158 if (type == DMU_OST_ZVOL) { 2159 uint64_t volsize, volblocksize; 2160 2161 if (nvprops == NULL || 2162 nvlist_lookup_uint64(nvprops, 2163 zfs_prop_to_name(ZFS_PROP_VOLSIZE), 2164 &volsize) != 0) { 2165 nvlist_free(nvprops); 2166 return (EINVAL); 2167 } 2168 2169 if ((error = nvlist_lookup_uint64(nvprops, 2170 zfs_prop_to_name(ZFS_PROP_VOLBLOCKSIZE), 2171 &volblocksize)) != 0 && error != ENOENT) { 2172 nvlist_free(nvprops); 2173 return (EINVAL); 2174 } 2175 2176 if (error != 0) 2177 volblocksize = zfs_prop_default_numeric( 2178 ZFS_PROP_VOLBLOCKSIZE); 2179 2180 if ((error = zvol_check_volblocksize( 2181 volblocksize)) != 0 || 2182 (error = zvol_check_volsize(volsize, 2183 volblocksize)) != 0) { 2184 nvlist_free(nvprops); 2185 return (error); 2186 } 2187 } else if (type == DMU_OST_ZFS) { 2188 int error; 2189 2190 /* 2191 * We have to have normalization and 2192 * case-folding flags correct when we do the 2193 * file system creation, so go figure them out 2194 * now. 2195 */ 2196 VERIFY(nvlist_alloc(&zct.zct_zplprops, 2197 NV_UNIQUE_NAME, KM_SLEEP) == 0); 2198 error = zfs_fill_zplprops(zc->zc_name, nvprops, 2199 zct.zct_zplprops, &is_insensitive); 2200 if (error != 0) { 2201 nvlist_free(nvprops); 2202 nvlist_free(zct.zct_zplprops); 2203 return (error); 2204 } 2205 } 2206 error = dmu_objset_create(zc->zc_name, type, NULL, 2207 is_insensitive ? DS_FLAG_CI_DATASET : 0, cbfunc, &zct); 2208 nvlist_free(zct.zct_zplprops); 2209 } 2210 2211 /* 2212 * It would be nice to do this atomically. 2213 */ 2214 if (error == 0) { 2215 if ((error = zfs_set_prop_nvlist(zc->zc_name, nvprops)) != 0) 2216 (void) dmu_objset_destroy(zc->zc_name); 2217 } 2218 nvlist_free(nvprops); 2219 return (error); 2220 } 2221 2222 struct snap_prop_arg { 2223 nvlist_t *nvprops; 2224 const char *snapname; 2225 }; 2226 2227 static int 2228 set_snap_props(char *name, void *arg) 2229 { 2230 struct snap_prop_arg *snpa = arg; 2231 int len = strlen(name) + strlen(snpa->snapname) + 2; 2232 char *buf = kmem_alloc(len, KM_SLEEP); 2233 int err; 2234 2235 (void) snprintf(buf, len, "%s@%s", name, snpa->snapname); 2236 err = zfs_set_prop_nvlist(buf, snpa->nvprops); 2237 if (err) 2238 (void) dmu_objset_destroy(buf); 2239 kmem_free(buf, len); 2240 return (err); 2241 } 2242 2243 /* 2244 * inputs: 2245 * zc_name name of filesystem 2246 * zc_value short name of snapshot 2247 * zc_cookie recursive flag 2248 * 2249 * outputs: none 2250 */ 2251 static int 2252 zfs_ioc_snapshot(zfs_cmd_t *zc) 2253 { 2254 nvlist_t *nvprops = NULL; 2255 int error; 2256 boolean_t recursive = zc->zc_cookie; 2257 2258 if (snapshot_namecheck(zc->zc_value, NULL, NULL) != 0) 2259 return (EINVAL); 2260 2261 if (zc->zc_nvlist_src != NULL && 2262 (error = get_nvlist(zc->zc_nvlist_src, zc->zc_nvlist_src_size, 2263 &nvprops)) != 0) 2264 return (error); 2265 2266 error = dmu_objset_snapshot(zc->zc_name, zc->zc_value, recursive); 2267 2268 /* 2269 * It would be nice to do this atomically. 2270 */ 2271 if (error == 0) { 2272 struct snap_prop_arg snpa; 2273 snpa.nvprops = nvprops; 2274 snpa.snapname = zc->zc_value; 2275 if (recursive) { 2276 error = dmu_objset_find(zc->zc_name, 2277 set_snap_props, &snpa, DS_FIND_CHILDREN); 2278 if (error) { 2279 (void) dmu_snapshots_destroy(zc->zc_name, 2280 zc->zc_value); 2281 } 2282 } else { 2283 error = set_snap_props(zc->zc_name, &snpa); 2284 } 2285 } 2286 nvlist_free(nvprops); 2287 return (error); 2288 } 2289 2290 int 2291 zfs_unmount_snap(char *name, void *arg) 2292 { 2293 vfs_t *vfsp = NULL; 2294 2295 if (arg) { 2296 char *snapname = arg; 2297 int len = strlen(name) + strlen(snapname) + 2; 2298 char *buf = kmem_alloc(len, KM_SLEEP); 2299 2300 (void) strcpy(buf, name); 2301 (void) strcat(buf, "@"); 2302 (void) strcat(buf, snapname); 2303 vfsp = zfs_get_vfs(buf); 2304 kmem_free(buf, len); 2305 } else if (strchr(name, '@')) { 2306 vfsp = zfs_get_vfs(name); 2307 } 2308 2309 if (vfsp) { 2310 /* 2311 * Always force the unmount for snapshots. 2312 */ 2313 int flag = MS_FORCE; 2314 int err; 2315 2316 if ((err = vn_vfswlock(vfsp->vfs_vnodecovered)) != 0) { 2317 VFS_RELE(vfsp); 2318 return (err); 2319 } 2320 VFS_RELE(vfsp); 2321 if ((err = dounmount(vfsp, flag, kcred)) != 0) 2322 return (err); 2323 } 2324 return (0); 2325 } 2326 2327 /* 2328 * inputs: 2329 * zc_name name of filesystem 2330 * zc_value short name of snapshot 2331 * 2332 * outputs: none 2333 */ 2334 static int 2335 zfs_ioc_destroy_snaps(zfs_cmd_t *zc) 2336 { 2337 int err; 2338 2339 if (snapshot_namecheck(zc->zc_value, NULL, NULL) != 0) 2340 return (EINVAL); 2341 err = dmu_objset_find(zc->zc_name, 2342 zfs_unmount_snap, zc->zc_value, DS_FIND_CHILDREN); 2343 if (err) 2344 return (err); 2345 return (dmu_snapshots_destroy(zc->zc_name, zc->zc_value)); 2346 } 2347 2348 /* 2349 * inputs: 2350 * zc_name name of dataset to destroy 2351 * zc_objset_type type of objset 2352 * 2353 * outputs: none 2354 */ 2355 static int 2356 zfs_ioc_destroy(zfs_cmd_t *zc) 2357 { 2358 if (strchr(zc->zc_name, '@') && zc->zc_objset_type == DMU_OST_ZFS) { 2359 int err = zfs_unmount_snap(zc->zc_name, NULL); 2360 if (err) 2361 return (err); 2362 } 2363 2364 return (dmu_objset_destroy(zc->zc_name)); 2365 } 2366 2367 /* 2368 * inputs: 2369 * zc_name name of dataset to rollback (to most recent snapshot) 2370 * 2371 * outputs: none 2372 */ 2373 static int 2374 zfs_ioc_rollback(zfs_cmd_t *zc) 2375 { 2376 objset_t *os; 2377 int error; 2378 zfsvfs_t *zfsvfs = NULL; 2379 2380 /* 2381 * Get the zfsvfs for the receiving objset. There 2382 * won't be one if we're operating on a zvol, if the 2383 * objset doesn't exist yet, or is not mounted. 2384 */ 2385 error = dmu_objset_open(zc->zc_name, DMU_OST_ANY, DS_MODE_USER, &os); 2386 if (error) 2387 return (error); 2388 2389 if (dmu_objset_type(os) == DMU_OST_ZFS) { 2390 mutex_enter(&os->os->os_user_ptr_lock); 2391 zfsvfs = dmu_objset_get_user(os); 2392 if (zfsvfs != NULL) 2393 VFS_HOLD(zfsvfs->z_vfs); 2394 mutex_exit(&os->os->os_user_ptr_lock); 2395 } 2396 2397 if (zfsvfs != NULL) { 2398 char *osname; 2399 int mode; 2400 2401 osname = kmem_alloc(MAXNAMELEN, KM_SLEEP); 2402 error = zfs_suspend_fs(zfsvfs, osname, &mode); 2403 if (error == 0) { 2404 int resume_err; 2405 2406 ASSERT(strcmp(osname, zc->zc_name) == 0); 2407 error = dmu_objset_rollback(os); 2408 resume_err = zfs_resume_fs(zfsvfs, osname, mode); 2409 error = error ? error : resume_err; 2410 } else { 2411 dmu_objset_close(os); 2412 } 2413 kmem_free(osname, MAXNAMELEN); 2414 VFS_RELE(zfsvfs->z_vfs); 2415 } else { 2416 error = dmu_objset_rollback(os); 2417 } 2418 /* Note, the dmu_objset_rollback() releases the objset for us. */ 2419 2420 return (error); 2421 } 2422 2423 /* 2424 * inputs: 2425 * zc_name old name of dataset 2426 * zc_value new name of dataset 2427 * zc_cookie recursive flag (only valid for snapshots) 2428 * 2429 * outputs: none 2430 */ 2431 static int 2432 zfs_ioc_rename(zfs_cmd_t *zc) 2433 { 2434 boolean_t recursive = zc->zc_cookie & 1; 2435 2436 zc->zc_value[sizeof (zc->zc_value) - 1] = '\0'; 2437 if (dataset_namecheck(zc->zc_value, NULL, NULL) != 0 || 2438 strchr(zc->zc_value, '%')) 2439 return (EINVAL); 2440 2441 /* 2442 * Unmount snapshot unless we're doing a recursive rename, 2443 * in which case the dataset code figures out which snapshots 2444 * to unmount. 2445 */ 2446 if (!recursive && strchr(zc->zc_name, '@') != NULL && 2447 zc->zc_objset_type == DMU_OST_ZFS) { 2448 int err = zfs_unmount_snap(zc->zc_name, NULL); 2449 if (err) 2450 return (err); 2451 } 2452 return (dmu_objset_rename(zc->zc_name, zc->zc_value, recursive)); 2453 } 2454 2455 static void 2456 clear_props(char *dataset, nvlist_t *props, nvlist_t *newprops) 2457 { 2458 zfs_cmd_t *zc; 2459 nvpair_t *prop; 2460 2461 if (props == NULL) 2462 return; 2463 zc = kmem_alloc(sizeof (zfs_cmd_t), KM_SLEEP); 2464 (void) strcpy(zc->zc_name, dataset); 2465 for (prop = nvlist_next_nvpair(props, NULL); prop; 2466 prop = nvlist_next_nvpair(props, prop)) { 2467 if (newprops != NULL && 2468 nvlist_exists(newprops, nvpair_name(prop))) 2469 continue; 2470 (void) strcpy(zc->zc_value, nvpair_name(prop)); 2471 if (zfs_secpolicy_inherit(zc, CRED()) == 0) 2472 (void) zfs_ioc_inherit_prop(zc); 2473 } 2474 kmem_free(zc, sizeof (zfs_cmd_t)); 2475 } 2476 2477 /* 2478 * inputs: 2479 * zc_name name of containing filesystem 2480 * zc_nvlist_src{_size} nvlist of properties to apply 2481 * zc_value name of snapshot to create 2482 * zc_string name of clone origin (if DRR_FLAG_CLONE) 2483 * zc_cookie file descriptor to recv from 2484 * zc_begin_record the BEGIN record of the stream (not byteswapped) 2485 * zc_guid force flag 2486 * 2487 * outputs: 2488 * zc_cookie number of bytes read 2489 */ 2490 static int 2491 zfs_ioc_recv(zfs_cmd_t *zc) 2492 { 2493 file_t *fp; 2494 objset_t *os; 2495 dmu_recv_cookie_t drc; 2496 zfsvfs_t *zfsvfs = NULL; 2497 boolean_t force = (boolean_t)zc->zc_guid; 2498 int error, fd; 2499 offset_t off; 2500 nvlist_t *props = NULL; 2501 nvlist_t *origprops = NULL; 2502 objset_t *origin = NULL; 2503 char *tosnap; 2504 char tofs[ZFS_MAXNAMELEN]; 2505 2506 if (dataset_namecheck(zc->zc_value, NULL, NULL) != 0 || 2507 strchr(zc->zc_value, '@') == NULL || 2508 strchr(zc->zc_value, '%')) 2509 return (EINVAL); 2510 2511 (void) strcpy(tofs, zc->zc_value); 2512 tosnap = strchr(tofs, '@'); 2513 *tosnap = '\0'; 2514 tosnap++; 2515 2516 if (zc->zc_nvlist_src != NULL && 2517 (error = get_nvlist(zc->zc_nvlist_src, zc->zc_nvlist_src_size, 2518 &props)) != 0) 2519 return (error); 2520 2521 fd = zc->zc_cookie; 2522 fp = getf(fd); 2523 if (fp == NULL) { 2524 nvlist_free(props); 2525 return (EBADF); 2526 } 2527 2528 if (dmu_objset_open(tofs, DMU_OST_ANY, 2529 DS_MODE_USER | DS_MODE_READONLY, &os) == 0) { 2530 /* 2531 * Try to get the zfsvfs for the receiving objset. 2532 * There won't be one if we're operating on a zvol, 2533 * if the objset doesn't exist yet, or is not mounted. 2534 */ 2535 mutex_enter(&os->os->os_user_ptr_lock); 2536 if (zfsvfs = dmu_objset_get_user(os)) { 2537 if (!mutex_tryenter(&zfsvfs->z_online_recv_lock)) { 2538 mutex_exit(&os->os->os_user_ptr_lock); 2539 dmu_objset_close(os); 2540 zfsvfs = NULL; 2541 error = EBUSY; 2542 goto out; 2543 } 2544 VFS_HOLD(zfsvfs->z_vfs); 2545 } 2546 mutex_exit(&os->os->os_user_ptr_lock); 2547 2548 /* 2549 * If new properties are supplied, they are to completely 2550 * replace the existing ones, so stash away the existing ones. 2551 */ 2552 if (props) 2553 (void) dsl_prop_get_all(os, &origprops, TRUE); 2554 2555 dmu_objset_close(os); 2556 } 2557 2558 if (zc->zc_string[0]) { 2559 error = dmu_objset_open(zc->zc_string, DMU_OST_ANY, 2560 DS_MODE_USER | DS_MODE_READONLY, &origin); 2561 if (error) 2562 goto out; 2563 } 2564 2565 error = dmu_recv_begin(tofs, tosnap, &zc->zc_begin_record, 2566 force, origin, zfsvfs != NULL, &drc); 2567 if (origin) 2568 dmu_objset_close(origin); 2569 if (error) 2570 goto out; 2571 2572 /* 2573 * Reset properties. We do this before we receive the stream 2574 * so that the properties are applied to the new data. 2575 */ 2576 if (props) { 2577 clear_props(tofs, origprops, props); 2578 /* 2579 * XXX - Note, this is all-or-nothing; should be best-effort. 2580 */ 2581 (void) zfs_set_prop_nvlist(tofs, props); 2582 } 2583 2584 off = fp->f_offset; 2585 error = dmu_recv_stream(&drc, fp->f_vnode, &off); 2586 2587 if (error == 0 && zfsvfs) { 2588 char *osname; 2589 int mode; 2590 2591 /* online recv */ 2592 osname = kmem_alloc(MAXNAMELEN, KM_SLEEP); 2593 error = zfs_suspend_fs(zfsvfs, osname, &mode); 2594 if (error == 0) { 2595 int resume_err; 2596 2597 error = dmu_recv_end(&drc); 2598 resume_err = zfs_resume_fs(zfsvfs, osname, mode); 2599 error = error ? error : resume_err; 2600 } else { 2601 dmu_recv_abort_cleanup(&drc); 2602 } 2603 kmem_free(osname, MAXNAMELEN); 2604 } else if (error == 0) { 2605 error = dmu_recv_end(&drc); 2606 } 2607 2608 zc->zc_cookie = off - fp->f_offset; 2609 if (VOP_SEEK(fp->f_vnode, fp->f_offset, &off, NULL) == 0) 2610 fp->f_offset = off; 2611 2612 /* 2613 * On error, restore the original props. 2614 */ 2615 if (error && props) { 2616 clear_props(tofs, props, NULL); 2617 (void) zfs_set_prop_nvlist(tofs, origprops); 2618 } 2619 out: 2620 if (zfsvfs) { 2621 mutex_exit(&zfsvfs->z_online_recv_lock); 2622 VFS_RELE(zfsvfs->z_vfs); 2623 } 2624 nvlist_free(props); 2625 nvlist_free(origprops); 2626 releasef(fd); 2627 return (error); 2628 } 2629 2630 /* 2631 * inputs: 2632 * zc_name name of snapshot to send 2633 * zc_value short name of incremental fromsnap (may be empty) 2634 * zc_cookie file descriptor to send stream to 2635 * zc_obj fromorigin flag (mutually exclusive with zc_value) 2636 * 2637 * outputs: none 2638 */ 2639 static int 2640 zfs_ioc_send(zfs_cmd_t *zc) 2641 { 2642 objset_t *fromsnap = NULL; 2643 objset_t *tosnap; 2644 file_t *fp; 2645 int error; 2646 offset_t off; 2647 2648 error = dmu_objset_open(zc->zc_name, DMU_OST_ANY, 2649 DS_MODE_USER | DS_MODE_READONLY, &tosnap); 2650 if (error) 2651 return (error); 2652 2653 if (zc->zc_value[0] != '\0') { 2654 char *buf; 2655 char *cp; 2656 2657 buf = kmem_alloc(MAXPATHLEN, KM_SLEEP); 2658 (void) strncpy(buf, zc->zc_name, MAXPATHLEN); 2659 cp = strchr(buf, '@'); 2660 if (cp) 2661 *(cp+1) = 0; 2662 (void) strncat(buf, zc->zc_value, MAXPATHLEN); 2663 error = dmu_objset_open(buf, DMU_OST_ANY, 2664 DS_MODE_USER | DS_MODE_READONLY, &fromsnap); 2665 kmem_free(buf, MAXPATHLEN); 2666 if (error) { 2667 dmu_objset_close(tosnap); 2668 return (error); 2669 } 2670 } 2671 2672 fp = getf(zc->zc_cookie); 2673 if (fp == NULL) { 2674 dmu_objset_close(tosnap); 2675 if (fromsnap) 2676 dmu_objset_close(fromsnap); 2677 return (EBADF); 2678 } 2679 2680 off = fp->f_offset; 2681 error = dmu_sendbackup(tosnap, fromsnap, zc->zc_obj, fp->f_vnode, &off); 2682 2683 if (VOP_SEEK(fp->f_vnode, fp->f_offset, &off, NULL) == 0) 2684 fp->f_offset = off; 2685 releasef(zc->zc_cookie); 2686 if (fromsnap) 2687 dmu_objset_close(fromsnap); 2688 dmu_objset_close(tosnap); 2689 return (error); 2690 } 2691 2692 static int 2693 zfs_ioc_inject_fault(zfs_cmd_t *zc) 2694 { 2695 int id, error; 2696 2697 error = zio_inject_fault(zc->zc_name, (int)zc->zc_guid, &id, 2698 &zc->zc_inject_record); 2699 2700 if (error == 0) 2701 zc->zc_guid = (uint64_t)id; 2702 2703 return (error); 2704 } 2705 2706 static int 2707 zfs_ioc_clear_fault(zfs_cmd_t *zc) 2708 { 2709 return (zio_clear_fault((int)zc->zc_guid)); 2710 } 2711 2712 static int 2713 zfs_ioc_inject_list_next(zfs_cmd_t *zc) 2714 { 2715 int id = (int)zc->zc_guid; 2716 int error; 2717 2718 error = zio_inject_list_next(&id, zc->zc_name, sizeof (zc->zc_name), 2719 &zc->zc_inject_record); 2720 2721 zc->zc_guid = id; 2722 2723 return (error); 2724 } 2725 2726 static int 2727 zfs_ioc_error_log(zfs_cmd_t *zc) 2728 { 2729 spa_t *spa; 2730 int error; 2731 size_t count = (size_t)zc->zc_nvlist_dst_size; 2732 2733 if ((error = spa_open(zc->zc_name, &spa, FTAG)) != 0) 2734 return (error); 2735 2736 error = spa_get_errlog(spa, (void *)(uintptr_t)zc->zc_nvlist_dst, 2737 &count); 2738 if (error == 0) 2739 zc->zc_nvlist_dst_size = count; 2740 else 2741 zc->zc_nvlist_dst_size = spa_get_errlog_size(spa); 2742 2743 spa_close(spa, FTAG); 2744 2745 return (error); 2746 } 2747 2748 static int 2749 zfs_ioc_clear(zfs_cmd_t *zc) 2750 { 2751 spa_t *spa; 2752 vdev_t *vd; 2753 int error; 2754 2755 /* 2756 * On zpool clear we also fix up missing slogs 2757 */ 2758 mutex_enter(&spa_namespace_lock); 2759 spa = spa_lookup(zc->zc_name); 2760 if (spa == NULL) { 2761 mutex_exit(&spa_namespace_lock); 2762 return (EIO); 2763 } 2764 if (spa->spa_log_state == SPA_LOG_MISSING) { 2765 /* we need to let spa_open/spa_load clear the chains */ 2766 spa->spa_log_state = SPA_LOG_CLEAR; 2767 } 2768 mutex_exit(&spa_namespace_lock); 2769 2770 if ((error = spa_open(zc->zc_name, &spa, FTAG)) != 0) 2771 return (error); 2772 2773 spa_vdev_state_enter(spa); 2774 2775 if (zc->zc_guid == 0) { 2776 vd = NULL; 2777 } else { 2778 vd = spa_lookup_by_guid(spa, zc->zc_guid, B_TRUE); 2779 if (vd == NULL) { 2780 (void) spa_vdev_state_exit(spa, NULL, ENODEV); 2781 spa_close(spa, FTAG); 2782 return (ENODEV); 2783 } 2784 } 2785 2786 vdev_clear(spa, vd); 2787 2788 (void) spa_vdev_state_exit(spa, NULL, 0); 2789 2790 /* 2791 * Resume any suspended I/Os. 2792 */ 2793 if (zio_resume(spa) != 0) 2794 error = EIO; 2795 2796 spa_close(spa, FTAG); 2797 2798 return (error); 2799 } 2800 2801 /* 2802 * inputs: 2803 * zc_name name of filesystem 2804 * zc_value name of origin snapshot 2805 * 2806 * outputs: none 2807 */ 2808 static int 2809 zfs_ioc_promote(zfs_cmd_t *zc) 2810 { 2811 char *cp; 2812 2813 /* 2814 * We don't need to unmount *all* the origin fs's snapshots, but 2815 * it's easier. 2816 */ 2817 cp = strchr(zc->zc_value, '@'); 2818 if (cp) 2819 *cp = '\0'; 2820 (void) dmu_objset_find(zc->zc_value, 2821 zfs_unmount_snap, NULL, DS_FIND_SNAPSHOTS); 2822 return (dsl_dataset_promote(zc->zc_name)); 2823 } 2824 2825 /* 2826 * We don't want to have a hard dependency 2827 * against some special symbols in sharefs 2828 * nfs, and smbsrv. Determine them if needed when 2829 * the first file system is shared. 2830 * Neither sharefs, nfs or smbsrv are unloadable modules. 2831 */ 2832 int (*znfsexport_fs)(void *arg); 2833 int (*zshare_fs)(enum sharefs_sys_op, share_t *, uint32_t); 2834 int (*zsmbexport_fs)(void *arg, boolean_t add_share); 2835 2836 int zfs_nfsshare_inited; 2837 int zfs_smbshare_inited; 2838 2839 ddi_modhandle_t nfs_mod; 2840 ddi_modhandle_t sharefs_mod; 2841 ddi_modhandle_t smbsrv_mod; 2842 kmutex_t zfs_share_lock; 2843 2844 static int 2845 zfs_init_sharefs() 2846 { 2847 int error; 2848 2849 ASSERT(MUTEX_HELD(&zfs_share_lock)); 2850 /* Both NFS and SMB shares also require sharetab support. */ 2851 if (sharefs_mod == NULL && ((sharefs_mod = 2852 ddi_modopen("fs/sharefs", 2853 KRTLD_MODE_FIRST, &error)) == NULL)) { 2854 return (ENOSYS); 2855 } 2856 if (zshare_fs == NULL && ((zshare_fs = 2857 (int (*)(enum sharefs_sys_op, share_t *, uint32_t)) 2858 ddi_modsym(sharefs_mod, "sharefs_impl", &error)) == NULL)) { 2859 return (ENOSYS); 2860 } 2861 return (0); 2862 } 2863 2864 static int 2865 zfs_ioc_share(zfs_cmd_t *zc) 2866 { 2867 int error; 2868 int opcode; 2869 2870 switch (zc->zc_share.z_sharetype) { 2871 case ZFS_SHARE_NFS: 2872 case ZFS_UNSHARE_NFS: 2873 if (zfs_nfsshare_inited == 0) { 2874 mutex_enter(&zfs_share_lock); 2875 if (nfs_mod == NULL && ((nfs_mod = ddi_modopen("fs/nfs", 2876 KRTLD_MODE_FIRST, &error)) == NULL)) { 2877 mutex_exit(&zfs_share_lock); 2878 return (ENOSYS); 2879 } 2880 if (znfsexport_fs == NULL && 2881 ((znfsexport_fs = (int (*)(void *)) 2882 ddi_modsym(nfs_mod, 2883 "nfs_export", &error)) == NULL)) { 2884 mutex_exit(&zfs_share_lock); 2885 return (ENOSYS); 2886 } 2887 error = zfs_init_sharefs(); 2888 if (error) { 2889 mutex_exit(&zfs_share_lock); 2890 return (ENOSYS); 2891 } 2892 zfs_nfsshare_inited = 1; 2893 mutex_exit(&zfs_share_lock); 2894 } 2895 break; 2896 case ZFS_SHARE_SMB: 2897 case ZFS_UNSHARE_SMB: 2898 if (zfs_smbshare_inited == 0) { 2899 mutex_enter(&zfs_share_lock); 2900 if (smbsrv_mod == NULL && ((smbsrv_mod = 2901 ddi_modopen("drv/smbsrv", 2902 KRTLD_MODE_FIRST, &error)) == NULL)) { 2903 mutex_exit(&zfs_share_lock); 2904 return (ENOSYS); 2905 } 2906 if (zsmbexport_fs == NULL && ((zsmbexport_fs = 2907 (int (*)(void *, boolean_t))ddi_modsym(smbsrv_mod, 2908 "smb_server_share", &error)) == NULL)) { 2909 mutex_exit(&zfs_share_lock); 2910 return (ENOSYS); 2911 } 2912 error = zfs_init_sharefs(); 2913 if (error) { 2914 mutex_exit(&zfs_share_lock); 2915 return (ENOSYS); 2916 } 2917 zfs_smbshare_inited = 1; 2918 mutex_exit(&zfs_share_lock); 2919 } 2920 break; 2921 default: 2922 return (EINVAL); 2923 } 2924 2925 switch (zc->zc_share.z_sharetype) { 2926 case ZFS_SHARE_NFS: 2927 case ZFS_UNSHARE_NFS: 2928 if (error = 2929 znfsexport_fs((void *) 2930 (uintptr_t)zc->zc_share.z_exportdata)) 2931 return (error); 2932 break; 2933 case ZFS_SHARE_SMB: 2934 case ZFS_UNSHARE_SMB: 2935 if (error = zsmbexport_fs((void *) 2936 (uintptr_t)zc->zc_share.z_exportdata, 2937 zc->zc_share.z_sharetype == ZFS_SHARE_SMB ? 2938 B_TRUE: B_FALSE)) { 2939 return (error); 2940 } 2941 break; 2942 } 2943 2944 opcode = (zc->zc_share.z_sharetype == ZFS_SHARE_NFS || 2945 zc->zc_share.z_sharetype == ZFS_SHARE_SMB) ? 2946 SHAREFS_ADD : SHAREFS_REMOVE; 2947 2948 /* 2949 * Add or remove share from sharetab 2950 */ 2951 error = zshare_fs(opcode, 2952 (void *)(uintptr_t)zc->zc_share.z_sharedata, 2953 zc->zc_share.z_sharemax); 2954 2955 return (error); 2956 2957 } 2958 2959 ace_t full_access[] = { 2960 {(uid_t)-1, ACE_ALL_PERMS, ACE_EVERYONE, 0} 2961 }; 2962 2963 /* 2964 * Remove all ACL files in shares dir 2965 */ 2966 static int 2967 zfs_smb_acl_purge(znode_t *dzp) 2968 { 2969 zap_cursor_t zc; 2970 zap_attribute_t zap; 2971 zfsvfs_t *zfsvfs = dzp->z_zfsvfs; 2972 int error; 2973 2974 for (zap_cursor_init(&zc, zfsvfs->z_os, dzp->z_id); 2975 (error = zap_cursor_retrieve(&zc, &zap)) == 0; 2976 zap_cursor_advance(&zc)) { 2977 if ((error = VOP_REMOVE(ZTOV(dzp), zap.za_name, kcred, 2978 NULL, 0)) != 0) 2979 break; 2980 } 2981 zap_cursor_fini(&zc); 2982 return (error); 2983 } 2984 2985 static int 2986 zfs_ioc_smb_acl(zfs_cmd_t *zc) 2987 { 2988 vnode_t *vp; 2989 znode_t *dzp; 2990 vnode_t *resourcevp = NULL; 2991 znode_t *sharedir; 2992 zfsvfs_t *zfsvfs; 2993 nvlist_t *nvlist; 2994 char *src, *target; 2995 vattr_t vattr; 2996 vsecattr_t vsec; 2997 int error = 0; 2998 2999 if ((error = lookupname(zc->zc_value, UIO_SYSSPACE, 3000 NO_FOLLOW, NULL, &vp)) != 0) 3001 return (error); 3002 3003 /* Now make sure mntpnt and dataset are ZFS */ 3004 3005 if (vp->v_vfsp->vfs_fstype != zfsfstype || 3006 (strcmp((char *)refstr_value(vp->v_vfsp->vfs_resource), 3007 zc->zc_name) != 0)) { 3008 VN_RELE(vp); 3009 return (EINVAL); 3010 } 3011 3012 dzp = VTOZ(vp); 3013 zfsvfs = dzp->z_zfsvfs; 3014 ZFS_ENTER(zfsvfs); 3015 3016 /* 3017 * Create share dir if its missing. 3018 */ 3019 mutex_enter(&zfsvfs->z_lock); 3020 if (zfsvfs->z_shares_dir == 0) { 3021 dmu_tx_t *tx; 3022 3023 tx = dmu_tx_create(zfsvfs->z_os); 3024 dmu_tx_hold_zap(tx, MASTER_NODE_OBJ, TRUE, 3025 ZFS_SHARES_DIR); 3026 dmu_tx_hold_zap(tx, DMU_NEW_OBJECT, FALSE, NULL); 3027 error = dmu_tx_assign(tx, TXG_WAIT); 3028 if (error) { 3029 dmu_tx_abort(tx); 3030 } else { 3031 error = zfs_create_share_dir(zfsvfs, tx); 3032 dmu_tx_commit(tx); 3033 } 3034 if (error) { 3035 mutex_exit(&zfsvfs->z_lock); 3036 VN_RELE(vp); 3037 ZFS_EXIT(zfsvfs); 3038 return (error); 3039 } 3040 } 3041 mutex_exit(&zfsvfs->z_lock); 3042 3043 ASSERT(zfsvfs->z_shares_dir); 3044 if ((error = zfs_zget(zfsvfs, zfsvfs->z_shares_dir, &sharedir)) != 0) { 3045 VN_RELE(vp); 3046 ZFS_EXIT(zfsvfs); 3047 return (error); 3048 } 3049 3050 switch (zc->zc_cookie) { 3051 case ZFS_SMB_ACL_ADD: 3052 vattr.va_mask = AT_MODE|AT_UID|AT_GID|AT_TYPE; 3053 vattr.va_type = VREG; 3054 vattr.va_mode = S_IFREG|0777; 3055 vattr.va_uid = 0; 3056 vattr.va_gid = 0; 3057 3058 vsec.vsa_mask = VSA_ACE; 3059 vsec.vsa_aclentp = &full_access; 3060 vsec.vsa_aclentsz = sizeof (full_access); 3061 vsec.vsa_aclcnt = 1; 3062 3063 error = VOP_CREATE(ZTOV(sharedir), zc->zc_string, 3064 &vattr, EXCL, 0, &resourcevp, kcred, 0, NULL, &vsec); 3065 if (resourcevp) 3066 VN_RELE(resourcevp); 3067 break; 3068 3069 case ZFS_SMB_ACL_REMOVE: 3070 error = VOP_REMOVE(ZTOV(sharedir), zc->zc_string, kcred, 3071 NULL, 0); 3072 break; 3073 3074 case ZFS_SMB_ACL_RENAME: 3075 if ((error = get_nvlist(zc->zc_nvlist_src, 3076 zc->zc_nvlist_src_size, &nvlist)) != 0) { 3077 VN_RELE(vp); 3078 ZFS_EXIT(zfsvfs); 3079 return (error); 3080 } 3081 if (nvlist_lookup_string(nvlist, ZFS_SMB_ACL_SRC, &src) || 3082 nvlist_lookup_string(nvlist, ZFS_SMB_ACL_TARGET, 3083 &target)) { 3084 VN_RELE(vp); 3085 VN_RELE(ZTOV(sharedir)); 3086 ZFS_EXIT(zfsvfs); 3087 return (error); 3088 } 3089 error = VOP_RENAME(ZTOV(sharedir), src, ZTOV(sharedir), target, 3090 kcred, NULL, 0); 3091 nvlist_free(nvlist); 3092 break; 3093 3094 case ZFS_SMB_ACL_PURGE: 3095 error = zfs_smb_acl_purge(sharedir); 3096 break; 3097 3098 default: 3099 error = EINVAL; 3100 break; 3101 } 3102 3103 VN_RELE(vp); 3104 VN_RELE(ZTOV(sharedir)); 3105 3106 ZFS_EXIT(zfsvfs); 3107 3108 return (error); 3109 } 3110 3111 /* 3112 * pool create, destroy, and export don't log the history as part of 3113 * zfsdev_ioctl, but rather zfs_ioc_pool_create, and zfs_ioc_pool_export 3114 * do the logging of those commands. 3115 */ 3116 static zfs_ioc_vec_t zfs_ioc_vec[] = { 3117 { zfs_ioc_pool_create, zfs_secpolicy_config, POOL_NAME, B_FALSE, 3118 B_FALSE }, 3119 { zfs_ioc_pool_destroy, zfs_secpolicy_config, POOL_NAME, B_FALSE, 3120 B_FALSE }, 3121 { zfs_ioc_pool_import, zfs_secpolicy_config, POOL_NAME, B_TRUE, 3122 B_FALSE }, 3123 { zfs_ioc_pool_export, zfs_secpolicy_config, POOL_NAME, B_FALSE, 3124 B_FALSE }, 3125 { zfs_ioc_pool_configs, zfs_secpolicy_none, NO_NAME, B_FALSE, 3126 B_FALSE }, 3127 { zfs_ioc_pool_stats, zfs_secpolicy_read, POOL_NAME, B_FALSE, 3128 B_FALSE }, 3129 { zfs_ioc_pool_tryimport, zfs_secpolicy_config, NO_NAME, B_FALSE, 3130 B_FALSE }, 3131 { zfs_ioc_pool_scrub, zfs_secpolicy_config, POOL_NAME, B_TRUE, 3132 B_TRUE }, 3133 { zfs_ioc_pool_freeze, zfs_secpolicy_config, NO_NAME, B_FALSE, 3134 B_FALSE }, 3135 { zfs_ioc_pool_upgrade, zfs_secpolicy_config, POOL_NAME, B_TRUE, 3136 B_TRUE }, 3137 { zfs_ioc_pool_get_history, zfs_secpolicy_config, POOL_NAME, B_FALSE, 3138 B_FALSE }, 3139 { zfs_ioc_vdev_add, zfs_secpolicy_config, POOL_NAME, B_TRUE, 3140 B_TRUE }, 3141 { zfs_ioc_vdev_remove, zfs_secpolicy_config, POOL_NAME, B_TRUE, 3142 B_TRUE }, 3143 { zfs_ioc_vdev_set_state, zfs_secpolicy_config, POOL_NAME, B_TRUE, 3144 B_FALSE }, 3145 { zfs_ioc_vdev_attach, zfs_secpolicy_config, POOL_NAME, B_TRUE, 3146 B_TRUE }, 3147 { zfs_ioc_vdev_detach, zfs_secpolicy_config, POOL_NAME, B_TRUE, 3148 B_TRUE }, 3149 { zfs_ioc_vdev_setpath, zfs_secpolicy_config, POOL_NAME, B_FALSE, 3150 B_TRUE }, 3151 { zfs_ioc_objset_stats, zfs_secpolicy_read, DATASET_NAME, B_FALSE, 3152 B_FALSE }, 3153 { zfs_ioc_objset_zplprops, zfs_secpolicy_read, DATASET_NAME, B_FALSE, 3154 B_FALSE }, 3155 { zfs_ioc_dataset_list_next, zfs_secpolicy_read, DATASET_NAME, B_FALSE, 3156 B_FALSE }, 3157 { zfs_ioc_snapshot_list_next, zfs_secpolicy_read, DATASET_NAME, B_FALSE, 3158 B_FALSE }, 3159 { zfs_ioc_set_prop, zfs_secpolicy_none, DATASET_NAME, B_TRUE, B_TRUE }, 3160 { zfs_ioc_create_minor, zfs_secpolicy_minor, DATASET_NAME, B_FALSE, 3161 B_FALSE }, 3162 { zfs_ioc_remove_minor, zfs_secpolicy_minor, DATASET_NAME, B_FALSE, 3163 B_FALSE }, 3164 { zfs_ioc_create, zfs_secpolicy_create, DATASET_NAME, B_TRUE, B_TRUE }, 3165 { zfs_ioc_destroy, zfs_secpolicy_destroy, DATASET_NAME, B_TRUE, 3166 B_TRUE}, 3167 { zfs_ioc_rollback, zfs_secpolicy_rollback, DATASET_NAME, B_TRUE, 3168 B_TRUE }, 3169 { zfs_ioc_rename, zfs_secpolicy_rename, DATASET_NAME, B_TRUE, B_TRUE }, 3170 { zfs_ioc_recv, zfs_secpolicy_receive, DATASET_NAME, B_TRUE, B_TRUE }, 3171 { zfs_ioc_send, zfs_secpolicy_send, DATASET_NAME, B_TRUE, B_FALSE }, 3172 { zfs_ioc_inject_fault, zfs_secpolicy_inject, NO_NAME, B_FALSE, 3173 B_FALSE }, 3174 { zfs_ioc_clear_fault, zfs_secpolicy_inject, NO_NAME, B_FALSE, 3175 B_FALSE }, 3176 { zfs_ioc_inject_list_next, zfs_secpolicy_inject, NO_NAME, B_FALSE, 3177 B_FALSE }, 3178 { zfs_ioc_error_log, zfs_secpolicy_inject, POOL_NAME, B_FALSE, 3179 B_FALSE }, 3180 { zfs_ioc_clear, zfs_secpolicy_config, POOL_NAME, B_TRUE, B_FALSE }, 3181 { zfs_ioc_promote, zfs_secpolicy_promote, DATASET_NAME, B_TRUE, 3182 B_TRUE }, 3183 { zfs_ioc_destroy_snaps, zfs_secpolicy_destroy, DATASET_NAME, B_TRUE, 3184 B_TRUE }, 3185 { zfs_ioc_snapshot, zfs_secpolicy_snapshot, DATASET_NAME, B_TRUE, 3186 B_TRUE }, 3187 { zfs_ioc_dsobj_to_dsname, zfs_secpolicy_config, POOL_NAME, B_FALSE, 3188 B_FALSE }, 3189 { zfs_ioc_obj_to_path, zfs_secpolicy_config, NO_NAME, B_FALSE, 3190 B_FALSE }, 3191 { zfs_ioc_pool_set_props, zfs_secpolicy_config, POOL_NAME, B_TRUE, 3192 B_TRUE }, 3193 { zfs_ioc_pool_get_props, zfs_secpolicy_read, POOL_NAME, B_FALSE, 3194 B_FALSE }, 3195 { zfs_ioc_set_fsacl, zfs_secpolicy_fsacl, DATASET_NAME, B_TRUE, 3196 B_TRUE }, 3197 { zfs_ioc_get_fsacl, zfs_secpolicy_read, DATASET_NAME, B_FALSE, 3198 B_FALSE }, 3199 { zfs_ioc_iscsi_perm_check, zfs_secpolicy_iscsi, DATASET_NAME, B_FALSE, 3200 B_FALSE }, 3201 { zfs_ioc_share, zfs_secpolicy_share, DATASET_NAME, B_FALSE, B_FALSE }, 3202 { zfs_ioc_inherit_prop, zfs_secpolicy_inherit, DATASET_NAME, B_TRUE, 3203 B_TRUE }, 3204 { zfs_ioc_smb_acl, zfs_secpolicy_smb_acl, DATASET_NAME, B_FALSE, 3205 B_FALSE } 3206 }; 3207 3208 int 3209 pool_status_check(const char *name, zfs_ioc_namecheck_t type) 3210 { 3211 spa_t *spa; 3212 char pool[ZFS_MAXNAMELEN]; 3213 int error; 3214 3215 ASSERT(type == POOL_NAME || type == DATASET_NAME); 3216 3217 (void) strlcpy(pool, name, ZFS_MAXNAMELEN); 3218 if (type == DATASET_NAME) { 3219 char *p; 3220 3221 if ((p = strpbrk(pool, "/@")) != NULL) 3222 *p = '\0'; 3223 } 3224 3225 error = spa_open(pool, &spa, FTAG); 3226 if (error == 0) { 3227 if (spa_suspended(spa)) 3228 error = EAGAIN; 3229 spa_close(spa, FTAG); 3230 } 3231 return (error); 3232 } 3233 3234 static int 3235 zfsdev_ioctl(dev_t dev, int cmd, intptr_t arg, int flag, cred_t *cr, int *rvalp) 3236 { 3237 zfs_cmd_t *zc; 3238 uint_t vec; 3239 int error, rc; 3240 3241 if (getminor(dev) != 0) 3242 return (zvol_ioctl(dev, cmd, arg, flag, cr, rvalp)); 3243 3244 vec = cmd - ZFS_IOC; 3245 ASSERT3U(getmajor(dev), ==, ddi_driver_major(zfs_dip)); 3246 3247 if (vec >= sizeof (zfs_ioc_vec) / sizeof (zfs_ioc_vec[0])) 3248 return (EINVAL); 3249 3250 zc = kmem_zalloc(sizeof (zfs_cmd_t), KM_SLEEP); 3251 3252 error = xcopyin((void *)arg, zc, sizeof (zfs_cmd_t)); 3253 3254 if (error == 0) 3255 error = zfs_ioc_vec[vec].zvec_secpolicy(zc, cr); 3256 3257 /* 3258 * Ensure that all pool/dataset names are valid before we pass down to 3259 * the lower layers. 3260 */ 3261 if (error == 0) { 3262 zc->zc_name[sizeof (zc->zc_name) - 1] = '\0'; 3263 switch (zfs_ioc_vec[vec].zvec_namecheck) { 3264 case POOL_NAME: 3265 if (pool_namecheck(zc->zc_name, NULL, NULL) != 0) 3266 error = EINVAL; 3267 if (zfs_ioc_vec[vec].zvec_pool_check) 3268 error = pool_status_check(zc->zc_name, 3269 zfs_ioc_vec[vec].zvec_namecheck); 3270 break; 3271 3272 case DATASET_NAME: 3273 if (dataset_namecheck(zc->zc_name, NULL, NULL) != 0) 3274 error = EINVAL; 3275 if (zfs_ioc_vec[vec].zvec_pool_check) 3276 error = pool_status_check(zc->zc_name, 3277 zfs_ioc_vec[vec].zvec_namecheck); 3278 break; 3279 3280 case NO_NAME: 3281 break; 3282 } 3283 } 3284 3285 if (error == 0) 3286 error = zfs_ioc_vec[vec].zvec_func(zc); 3287 3288 rc = xcopyout(zc, (void *)arg, sizeof (zfs_cmd_t)); 3289 if (error == 0) { 3290 error = rc; 3291 if (zfs_ioc_vec[vec].zvec_his_log == B_TRUE) 3292 zfs_log_history(zc); 3293 } 3294 3295 kmem_free(zc, sizeof (zfs_cmd_t)); 3296 return (error); 3297 } 3298 3299 static int 3300 zfs_attach(dev_info_t *dip, ddi_attach_cmd_t cmd) 3301 { 3302 if (cmd != DDI_ATTACH) 3303 return (DDI_FAILURE); 3304 3305 if (ddi_create_minor_node(dip, "zfs", S_IFCHR, 0, 3306 DDI_PSEUDO, 0) == DDI_FAILURE) 3307 return (DDI_FAILURE); 3308 3309 zfs_dip = dip; 3310 3311 ddi_report_dev(dip); 3312 3313 return (DDI_SUCCESS); 3314 } 3315 3316 static int 3317 zfs_detach(dev_info_t *dip, ddi_detach_cmd_t cmd) 3318 { 3319 if (spa_busy() || zfs_busy() || zvol_busy()) 3320 return (DDI_FAILURE); 3321 3322 if (cmd != DDI_DETACH) 3323 return (DDI_FAILURE); 3324 3325 zfs_dip = NULL; 3326 3327 ddi_prop_remove_all(dip); 3328 ddi_remove_minor_node(dip, NULL); 3329 3330 return (DDI_SUCCESS); 3331 } 3332 3333 /*ARGSUSED*/ 3334 static int 3335 zfs_info(dev_info_t *dip, ddi_info_cmd_t infocmd, void *arg, void **result) 3336 { 3337 switch (infocmd) { 3338 case DDI_INFO_DEVT2DEVINFO: 3339 *result = zfs_dip; 3340 return (DDI_SUCCESS); 3341 3342 case DDI_INFO_DEVT2INSTANCE: 3343 *result = (void *)0; 3344 return (DDI_SUCCESS); 3345 } 3346 3347 return (DDI_FAILURE); 3348 } 3349 3350 /* 3351 * OK, so this is a little weird. 3352 * 3353 * /dev/zfs is the control node, i.e. minor 0. 3354 * /dev/zvol/[r]dsk/pool/dataset are the zvols, minor > 0. 3355 * 3356 * /dev/zfs has basically nothing to do except serve up ioctls, 3357 * so most of the standard driver entry points are in zvol.c. 3358 */ 3359 static struct cb_ops zfs_cb_ops = { 3360 zvol_open, /* open */ 3361 zvol_close, /* close */ 3362 zvol_strategy, /* strategy */ 3363 nodev, /* print */ 3364 zvol_dump, /* dump */ 3365 zvol_read, /* read */ 3366 zvol_write, /* write */ 3367 zfsdev_ioctl, /* ioctl */ 3368 nodev, /* devmap */ 3369 nodev, /* mmap */ 3370 nodev, /* segmap */ 3371 nochpoll, /* poll */ 3372 ddi_prop_op, /* prop_op */ 3373 NULL, /* streamtab */ 3374 D_NEW | D_MP | D_64BIT, /* Driver compatibility flag */ 3375 CB_REV, /* version */ 3376 nodev, /* async read */ 3377 nodev, /* async write */ 3378 }; 3379 3380 static struct dev_ops zfs_dev_ops = { 3381 DEVO_REV, /* version */ 3382 0, /* refcnt */ 3383 zfs_info, /* info */ 3384 nulldev, /* identify */ 3385 nulldev, /* probe */ 3386 zfs_attach, /* attach */ 3387 zfs_detach, /* detach */ 3388 nodev, /* reset */ 3389 &zfs_cb_ops, /* driver operations */ 3390 NULL, /* no bus operations */ 3391 NULL, /* power */ 3392 ddi_quiesce_not_needed, /* quiesce */ 3393 }; 3394 3395 static struct modldrv zfs_modldrv = { 3396 &mod_driverops, 3397 "ZFS storage pool", 3398 &zfs_dev_ops 3399 }; 3400 3401 static struct modlinkage modlinkage = { 3402 MODREV_1, 3403 (void *)&zfs_modlfs, 3404 (void *)&zfs_modldrv, 3405 NULL 3406 }; 3407 3408 3409 uint_t zfs_fsyncer_key; 3410 extern uint_t rrw_tsd_key; 3411 3412 int 3413 _init(void) 3414 { 3415 int error; 3416 3417 spa_init(FREAD | FWRITE); 3418 zfs_init(); 3419 zvol_init(); 3420 3421 if ((error = mod_install(&modlinkage)) != 0) { 3422 zvol_fini(); 3423 zfs_fini(); 3424 spa_fini(); 3425 return (error); 3426 } 3427 3428 tsd_create(&zfs_fsyncer_key, NULL); 3429 tsd_create(&rrw_tsd_key, NULL); 3430 3431 error = ldi_ident_from_mod(&modlinkage, &zfs_li); 3432 ASSERT(error == 0); 3433 mutex_init(&zfs_share_lock, NULL, MUTEX_DEFAULT, NULL); 3434 3435 return (0); 3436 } 3437 3438 int 3439 _fini(void) 3440 { 3441 int error; 3442 3443 if (spa_busy() || zfs_busy() || zvol_busy() || zio_injection_enabled) 3444 return (EBUSY); 3445 3446 if ((error = mod_remove(&modlinkage)) != 0) 3447 return (error); 3448 3449 zvol_fini(); 3450 zfs_fini(); 3451 spa_fini(); 3452 if (zfs_nfsshare_inited) 3453 (void) ddi_modclose(nfs_mod); 3454 if (zfs_smbshare_inited) 3455 (void) ddi_modclose(smbsrv_mod); 3456 if (zfs_nfsshare_inited || zfs_smbshare_inited) 3457 (void) ddi_modclose(sharefs_mod); 3458 3459 tsd_destroy(&zfs_fsyncer_key); 3460 ldi_ident_release(zfs_li); 3461 zfs_li = NULL; 3462 mutex_destroy(&zfs_share_lock); 3463 3464 return (error); 3465 } 3466 3467 int 3468 _info(struct modinfo *modinfop) 3469 { 3470 return (mod_info(&modlinkage, modinfop)); 3471 } 3472