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 /* This array is indexed by zfs_userquota_prop_t */ 97 static const char *userquota_perms[] = { 98 ZFS_DELEG_PERM_USERUSED, 99 ZFS_DELEG_PERM_USERQUOTA, 100 ZFS_DELEG_PERM_GROUPUSED, 101 ZFS_DELEG_PERM_GROUPQUOTA, 102 }; 103 104 static int zfs_ioc_userspace_upgrade(zfs_cmd_t *zc); 105 static void clear_props(char *dataset, nvlist_t *props, nvlist_t *newprops); 106 static int zfs_fill_zplprops_root(uint64_t, nvlist_t *, nvlist_t *, 107 boolean_t *); 108 int zfs_set_prop_nvlist(const char *, nvlist_t *); 109 110 /* _NOTE(PRINTFLIKE(4)) - this is printf-like, but lint is too whiney */ 111 void 112 __dprintf(const char *file, const char *func, int line, const char *fmt, ...) 113 { 114 const char *newfile; 115 char buf[256]; 116 va_list adx; 117 118 /* 119 * Get rid of annoying "../common/" prefix to filename. 120 */ 121 newfile = strrchr(file, '/'); 122 if (newfile != NULL) { 123 newfile = newfile + 1; /* Get rid of leading / */ 124 } else { 125 newfile = file; 126 } 127 128 va_start(adx, fmt); 129 (void) vsnprintf(buf, sizeof (buf), fmt, adx); 130 va_end(adx); 131 132 /* 133 * To get this data, use the zfs-dprintf probe as so: 134 * dtrace -q -n 'zfs-dprintf \ 135 * /stringof(arg0) == "dbuf.c"/ \ 136 * {printf("%s: %s", stringof(arg1), stringof(arg3))}' 137 * arg0 = file name 138 * arg1 = function name 139 * arg2 = line number 140 * arg3 = message 141 */ 142 DTRACE_PROBE4(zfs__dprintf, 143 char *, newfile, char *, func, int, line, char *, buf); 144 } 145 146 static void 147 history_str_free(char *buf) 148 { 149 kmem_free(buf, HIS_MAX_RECORD_LEN); 150 } 151 152 static char * 153 history_str_get(zfs_cmd_t *zc) 154 { 155 char *buf; 156 157 if (zc->zc_history == NULL) 158 return (NULL); 159 160 buf = kmem_alloc(HIS_MAX_RECORD_LEN, KM_SLEEP); 161 if (copyinstr((void *)(uintptr_t)zc->zc_history, 162 buf, HIS_MAX_RECORD_LEN, NULL) != 0) { 163 history_str_free(buf); 164 return (NULL); 165 } 166 167 buf[HIS_MAX_RECORD_LEN -1] = '\0'; 168 169 return (buf); 170 } 171 172 /* 173 * Check to see if the named dataset is currently defined as bootable 174 */ 175 static boolean_t 176 zfs_is_bootfs(const char *name) 177 { 178 objset_t *os; 179 180 if (dmu_objset_hold(name, FTAG, &os) == 0) { 181 boolean_t ret; 182 ret = (dmu_objset_id(os) == dmu_objset_spa(os)->spa_bootfs); 183 dmu_objset_rele(os, FTAG); 184 return (ret); 185 } 186 return (B_FALSE); 187 } 188 189 /* 190 * zfs_earlier_version 191 * 192 * Return non-zero if the spa version is less than requested version. 193 */ 194 static int 195 zfs_earlier_version(const char *name, int version) 196 { 197 spa_t *spa; 198 199 if (spa_open(name, &spa, FTAG) == 0) { 200 if (spa_version(spa) < version) { 201 spa_close(spa, FTAG); 202 return (1); 203 } 204 spa_close(spa, FTAG); 205 } 206 return (0); 207 } 208 209 /* 210 * zpl_earlier_version 211 * 212 * Return TRUE if the ZPL version is less than requested version. 213 */ 214 static boolean_t 215 zpl_earlier_version(const char *name, int version) 216 { 217 objset_t *os; 218 boolean_t rc = B_TRUE; 219 220 if (dmu_objset_hold(name, FTAG, &os) == 0) { 221 uint64_t zplversion; 222 223 if (dmu_objset_type(os) != DMU_OST_ZFS) { 224 dmu_objset_rele(os, FTAG); 225 return (B_TRUE); 226 } 227 /* XXX reading from non-owned objset */ 228 if (zfs_get_zplprop(os, ZFS_PROP_VERSION, &zplversion) == 0) 229 rc = zplversion < version; 230 dmu_objset_rele(os, FTAG); 231 } 232 return (rc); 233 } 234 235 static void 236 zfs_log_history(zfs_cmd_t *zc) 237 { 238 spa_t *spa; 239 char *buf; 240 241 if ((buf = history_str_get(zc)) == NULL) 242 return; 243 244 if (spa_open(zc->zc_name, &spa, FTAG) == 0) { 245 if (spa_version(spa) >= SPA_VERSION_ZPOOL_HISTORY) 246 (void) spa_history_log(spa, buf, LOG_CMD_NORMAL); 247 spa_close(spa, FTAG); 248 } 249 history_str_free(buf); 250 } 251 252 /* 253 * Policy for top-level read operations (list pools). Requires no privileges, 254 * and can be used in the local zone, as there is no associated dataset. 255 */ 256 /* ARGSUSED */ 257 static int 258 zfs_secpolicy_none(zfs_cmd_t *zc, cred_t *cr) 259 { 260 return (0); 261 } 262 263 /* 264 * Policy for dataset read operations (list children, get statistics). Requires 265 * no privileges, but must be visible in the local zone. 266 */ 267 /* ARGSUSED */ 268 static int 269 zfs_secpolicy_read(zfs_cmd_t *zc, cred_t *cr) 270 { 271 if (INGLOBALZONE(curproc) || 272 zone_dataset_visible(zc->zc_name, NULL)) 273 return (0); 274 275 return (ENOENT); 276 } 277 278 static int 279 zfs_dozonecheck(const char *dataset, cred_t *cr) 280 { 281 uint64_t zoned; 282 int writable = 1; 283 284 /* 285 * The dataset must be visible by this zone -- check this first 286 * so they don't see EPERM on something they shouldn't know about. 287 */ 288 if (!INGLOBALZONE(curproc) && 289 !zone_dataset_visible(dataset, &writable)) 290 return (ENOENT); 291 292 if (dsl_prop_get_integer(dataset, "zoned", &zoned, NULL)) 293 return (ENOENT); 294 295 if (INGLOBALZONE(curproc)) { 296 /* 297 * If the fs is zoned, only root can access it from the 298 * global zone. 299 */ 300 if (secpolicy_zfs(cr) && zoned) 301 return (EPERM); 302 } else { 303 /* 304 * If we are in a local zone, the 'zoned' property must be set. 305 */ 306 if (!zoned) 307 return (EPERM); 308 309 /* must be writable by this zone */ 310 if (!writable) 311 return (EPERM); 312 } 313 return (0); 314 } 315 316 int 317 zfs_secpolicy_write_perms(const char *name, const char *perm, cred_t *cr) 318 { 319 int error; 320 321 error = zfs_dozonecheck(name, cr); 322 if (error == 0) { 323 error = secpolicy_zfs(cr); 324 if (error) 325 error = dsl_deleg_access(name, perm, cr); 326 } 327 return (error); 328 } 329 330 static int 331 zfs_secpolicy_setprop(const char *name, zfs_prop_t prop, cred_t *cr) 332 { 333 /* 334 * Check permissions for special properties. 335 */ 336 switch (prop) { 337 case ZFS_PROP_ZONED: 338 /* 339 * Disallow setting of 'zoned' from within a local zone. 340 */ 341 if (!INGLOBALZONE(curproc)) 342 return (EPERM); 343 break; 344 345 case ZFS_PROP_QUOTA: 346 if (!INGLOBALZONE(curproc)) { 347 uint64_t zoned; 348 char setpoint[MAXNAMELEN]; 349 /* 350 * Unprivileged users are allowed to modify the 351 * quota on things *under* (ie. contained by) 352 * the thing they own. 353 */ 354 if (dsl_prop_get_integer(name, "zoned", &zoned, 355 setpoint)) 356 return (EPERM); 357 if (!zoned || strlen(name) <= strlen(setpoint)) 358 return (EPERM); 359 } 360 break; 361 } 362 363 return (zfs_secpolicy_write_perms(name, zfs_prop_to_name(prop), cr)); 364 } 365 366 int 367 zfs_secpolicy_fsacl(zfs_cmd_t *zc, cred_t *cr) 368 { 369 int error; 370 371 error = zfs_dozonecheck(zc->zc_name, cr); 372 if (error) 373 return (error); 374 375 /* 376 * permission to set permissions will be evaluated later in 377 * dsl_deleg_can_allow() 378 */ 379 return (0); 380 } 381 382 int 383 zfs_secpolicy_rollback(zfs_cmd_t *zc, cred_t *cr) 384 { 385 return (zfs_secpolicy_write_perms(zc->zc_name, 386 ZFS_DELEG_PERM_ROLLBACK, cr)); 387 } 388 389 int 390 zfs_secpolicy_send(zfs_cmd_t *zc, cred_t *cr) 391 { 392 return (zfs_secpolicy_write_perms(zc->zc_name, 393 ZFS_DELEG_PERM_SEND, cr)); 394 } 395 396 static int 397 zfs_secpolicy_deleg_share(zfs_cmd_t *zc, cred_t *cr) 398 { 399 vnode_t *vp; 400 int error; 401 402 if ((error = lookupname(zc->zc_value, UIO_SYSSPACE, 403 NO_FOLLOW, NULL, &vp)) != 0) 404 return (error); 405 406 /* Now make sure mntpnt and dataset are ZFS */ 407 408 if (vp->v_vfsp->vfs_fstype != zfsfstype || 409 (strcmp((char *)refstr_value(vp->v_vfsp->vfs_resource), 410 zc->zc_name) != 0)) { 411 VN_RELE(vp); 412 return (EPERM); 413 } 414 415 VN_RELE(vp); 416 return (dsl_deleg_access(zc->zc_name, 417 ZFS_DELEG_PERM_SHARE, cr)); 418 } 419 420 int 421 zfs_secpolicy_share(zfs_cmd_t *zc, cred_t *cr) 422 { 423 if (!INGLOBALZONE(curproc)) 424 return (EPERM); 425 426 if (secpolicy_nfs(cr) == 0) { 427 return (0); 428 } else { 429 return (zfs_secpolicy_deleg_share(zc, cr)); 430 } 431 } 432 433 int 434 zfs_secpolicy_smb_acl(zfs_cmd_t *zc, cred_t *cr) 435 { 436 if (!INGLOBALZONE(curproc)) 437 return (EPERM); 438 439 if (secpolicy_smb(cr) == 0) { 440 return (0); 441 } else { 442 return (zfs_secpolicy_deleg_share(zc, cr)); 443 } 444 } 445 446 static int 447 zfs_get_parent(const char *datasetname, char *parent, int parentsize) 448 { 449 char *cp; 450 451 /* 452 * Remove the @bla or /bla from the end of the name to get the parent. 453 */ 454 (void) strncpy(parent, datasetname, parentsize); 455 cp = strrchr(parent, '@'); 456 if (cp != NULL) { 457 cp[0] = '\0'; 458 } else { 459 cp = strrchr(parent, '/'); 460 if (cp == NULL) 461 return (ENOENT); 462 cp[0] = '\0'; 463 } 464 465 return (0); 466 } 467 468 int 469 zfs_secpolicy_destroy_perms(const char *name, cred_t *cr) 470 { 471 int error; 472 473 if ((error = zfs_secpolicy_write_perms(name, 474 ZFS_DELEG_PERM_MOUNT, cr)) != 0) 475 return (error); 476 477 return (zfs_secpolicy_write_perms(name, ZFS_DELEG_PERM_DESTROY, cr)); 478 } 479 480 static int 481 zfs_secpolicy_destroy(zfs_cmd_t *zc, cred_t *cr) 482 { 483 return (zfs_secpolicy_destroy_perms(zc->zc_name, cr)); 484 } 485 486 /* 487 * Must have sys_config privilege to check the iscsi permission 488 */ 489 /* ARGSUSED */ 490 static int 491 zfs_secpolicy_iscsi(zfs_cmd_t *zc, cred_t *cr) 492 { 493 return (secpolicy_zfs(cr)); 494 } 495 496 int 497 zfs_secpolicy_rename_perms(const char *from, const char *to, cred_t *cr) 498 { 499 char parentname[MAXNAMELEN]; 500 int error; 501 502 if ((error = zfs_secpolicy_write_perms(from, 503 ZFS_DELEG_PERM_RENAME, cr)) != 0) 504 return (error); 505 506 if ((error = zfs_secpolicy_write_perms(from, 507 ZFS_DELEG_PERM_MOUNT, cr)) != 0) 508 return (error); 509 510 if ((error = zfs_get_parent(to, parentname, 511 sizeof (parentname))) != 0) 512 return (error); 513 514 if ((error = zfs_secpolicy_write_perms(parentname, 515 ZFS_DELEG_PERM_CREATE, cr)) != 0) 516 return (error); 517 518 if ((error = zfs_secpolicy_write_perms(parentname, 519 ZFS_DELEG_PERM_MOUNT, cr)) != 0) 520 return (error); 521 522 return (error); 523 } 524 525 static int 526 zfs_secpolicy_rename(zfs_cmd_t *zc, cred_t *cr) 527 { 528 return (zfs_secpolicy_rename_perms(zc->zc_name, zc->zc_value, cr)); 529 } 530 531 static int 532 zfs_secpolicy_promote(zfs_cmd_t *zc, cred_t *cr) 533 { 534 char parentname[MAXNAMELEN]; 535 objset_t *clone; 536 int error; 537 538 error = zfs_secpolicy_write_perms(zc->zc_name, 539 ZFS_DELEG_PERM_PROMOTE, cr); 540 if (error) 541 return (error); 542 543 error = dmu_objset_hold(zc->zc_name, FTAG, &clone); 544 545 if (error == 0) { 546 dsl_dataset_t *pclone = NULL; 547 dsl_dir_t *dd; 548 dd = clone->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_rele(clone, FTAG); 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_rele(clone, FTAG); 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 return (zfs_secpolicy_write_perms(name, 593 ZFS_DELEG_PERM_SNAPSHOT, cr)); 594 } 595 596 static int 597 zfs_secpolicy_snapshot(zfs_cmd_t *zc, cred_t *cr) 598 { 599 600 return (zfs_secpolicy_snapshot_perms(zc->zc_name, cr)); 601 } 602 603 static int 604 zfs_secpolicy_create(zfs_cmd_t *zc, cred_t *cr) 605 { 606 char parentname[MAXNAMELEN]; 607 int error; 608 609 if ((error = zfs_get_parent(zc->zc_name, parentname, 610 sizeof (parentname))) != 0) 611 return (error); 612 613 if (zc->zc_value[0] != '\0') { 614 if ((error = zfs_secpolicy_write_perms(zc->zc_value, 615 ZFS_DELEG_PERM_CLONE, cr)) != 0) 616 return (error); 617 } 618 619 if ((error = zfs_secpolicy_write_perms(parentname, 620 ZFS_DELEG_PERM_CREATE, cr)) != 0) 621 return (error); 622 623 error = zfs_secpolicy_write_perms(parentname, 624 ZFS_DELEG_PERM_MOUNT, cr); 625 626 return (error); 627 } 628 629 static int 630 zfs_secpolicy_umount(zfs_cmd_t *zc, cred_t *cr) 631 { 632 int error; 633 634 error = secpolicy_fs_unmount(cr, NULL); 635 if (error) { 636 error = dsl_deleg_access(zc->zc_name, ZFS_DELEG_PERM_MOUNT, cr); 637 } 638 return (error); 639 } 640 641 /* 642 * Policy for pool operations - create/destroy pools, add vdevs, etc. Requires 643 * SYS_CONFIG privilege, which is not available in a local zone. 644 */ 645 /* ARGSUSED */ 646 static int 647 zfs_secpolicy_config(zfs_cmd_t *zc, cred_t *cr) 648 { 649 if (secpolicy_sys_config(cr, B_FALSE) != 0) 650 return (EPERM); 651 652 return (0); 653 } 654 655 /* 656 * Policy for fault injection. Requires all privileges. 657 */ 658 /* ARGSUSED */ 659 static int 660 zfs_secpolicy_inject(zfs_cmd_t *zc, cred_t *cr) 661 { 662 return (secpolicy_zinject(cr)); 663 } 664 665 static int 666 zfs_secpolicy_inherit(zfs_cmd_t *zc, cred_t *cr) 667 { 668 zfs_prop_t prop = zfs_name_to_prop(zc->zc_value); 669 670 if (prop == ZPROP_INVAL) { 671 if (!zfs_prop_user(zc->zc_value)) 672 return (EINVAL); 673 return (zfs_secpolicy_write_perms(zc->zc_name, 674 ZFS_DELEG_PERM_USERPROP, cr)); 675 } else { 676 if (!zfs_prop_inheritable(prop)) 677 return (EINVAL); 678 return (zfs_secpolicy_setprop(zc->zc_name, prop, cr)); 679 } 680 } 681 682 static int 683 zfs_secpolicy_userspace_one(zfs_cmd_t *zc, cred_t *cr) 684 { 685 int err = zfs_secpolicy_read(zc, cr); 686 if (err) 687 return (err); 688 689 if (zc->zc_objset_type >= ZFS_NUM_USERQUOTA_PROPS) 690 return (EINVAL); 691 692 if (zc->zc_value[0] == 0) { 693 /* 694 * They are asking about a posix uid/gid. If it's 695 * themself, allow it. 696 */ 697 if (zc->zc_objset_type == ZFS_PROP_USERUSED || 698 zc->zc_objset_type == ZFS_PROP_USERQUOTA) { 699 if (zc->zc_guid == crgetuid(cr)) 700 return (0); 701 } else { 702 if (groupmember(zc->zc_guid, cr)) 703 return (0); 704 } 705 } 706 707 return (zfs_secpolicy_write_perms(zc->zc_name, 708 userquota_perms[zc->zc_objset_type], cr)); 709 } 710 711 static int 712 zfs_secpolicy_userspace_many(zfs_cmd_t *zc, cred_t *cr) 713 { 714 int err = zfs_secpolicy_read(zc, cr); 715 if (err) 716 return (err); 717 718 if (zc->zc_objset_type >= ZFS_NUM_USERQUOTA_PROPS) 719 return (EINVAL); 720 721 return (zfs_secpolicy_write_perms(zc->zc_name, 722 userquota_perms[zc->zc_objset_type], cr)); 723 } 724 725 static int 726 zfs_secpolicy_userspace_upgrade(zfs_cmd_t *zc, cred_t *cr) 727 { 728 return (zfs_secpolicy_setprop(zc->zc_name, ZFS_PROP_VERSION, cr)); 729 } 730 731 static int 732 zfs_secpolicy_hold(zfs_cmd_t *zc, cred_t *cr) 733 { 734 return (zfs_secpolicy_write_perms(zc->zc_name, 735 ZFS_DELEG_PERM_HOLD, cr)); 736 } 737 738 static int 739 zfs_secpolicy_release(zfs_cmd_t *zc, cred_t *cr) 740 { 741 return (zfs_secpolicy_write_perms(zc->zc_name, 742 ZFS_DELEG_PERM_RELEASE, cr)); 743 } 744 745 /* 746 * Returns the nvlist as specified by the user in the zfs_cmd_t. 747 */ 748 static int 749 get_nvlist(uint64_t nvl, uint64_t size, int iflag, nvlist_t **nvp) 750 { 751 char *packed; 752 int error; 753 nvlist_t *list = NULL; 754 755 /* 756 * Read in and unpack the user-supplied nvlist. 757 */ 758 if (size == 0) 759 return (EINVAL); 760 761 packed = kmem_alloc(size, KM_SLEEP); 762 763 if ((error = ddi_copyin((void *)(uintptr_t)nvl, packed, size, 764 iflag)) != 0) { 765 kmem_free(packed, size); 766 return (error); 767 } 768 769 if ((error = nvlist_unpack(packed, size, &list, 0)) != 0) { 770 kmem_free(packed, size); 771 return (error); 772 } 773 774 kmem_free(packed, size); 775 776 *nvp = list; 777 return (0); 778 } 779 780 static int 781 put_nvlist(zfs_cmd_t *zc, nvlist_t *nvl) 782 { 783 char *packed = NULL; 784 size_t size; 785 int error; 786 787 VERIFY(nvlist_size(nvl, &size, NV_ENCODE_NATIVE) == 0); 788 789 if (size > zc->zc_nvlist_dst_size) { 790 error = ENOMEM; 791 } else { 792 packed = kmem_alloc(size, KM_SLEEP); 793 VERIFY(nvlist_pack(nvl, &packed, &size, NV_ENCODE_NATIVE, 794 KM_SLEEP) == 0); 795 error = ddi_copyout(packed, 796 (void *)(uintptr_t)zc->zc_nvlist_dst, size, zc->zc_iflags); 797 kmem_free(packed, size); 798 } 799 800 zc->zc_nvlist_dst_size = size; 801 return (error); 802 } 803 804 static int 805 getzfsvfs(const char *dsname, zfsvfs_t **zvp) 806 { 807 objset_t *os; 808 int error; 809 810 error = dmu_objset_hold(dsname, FTAG, &os); 811 if (error) 812 return (error); 813 if (dmu_objset_type(os) != DMU_OST_ZFS) { 814 dmu_objset_rele(os, FTAG); 815 return (EINVAL); 816 } 817 818 mutex_enter(&os->os_user_ptr_lock); 819 *zvp = dmu_objset_get_user(os); 820 if (*zvp) { 821 VFS_HOLD((*zvp)->z_vfs); 822 } else { 823 error = ESRCH; 824 } 825 mutex_exit(&os->os_user_ptr_lock); 826 dmu_objset_rele(os, FTAG); 827 return (error); 828 } 829 830 /* 831 * Find a zfsvfs_t for a mounted filesystem, or create our own, in which 832 * case its z_vfs will be NULL, and it will be opened as the owner. 833 */ 834 static int 835 zfsvfs_hold(const char *name, void *tag, zfsvfs_t **zvp) 836 { 837 int error = 0; 838 839 if (getzfsvfs(name, zvp) != 0) 840 error = zfsvfs_create(name, zvp); 841 if (error == 0) { 842 rrw_enter(&(*zvp)->z_teardown_lock, RW_READER, tag); 843 if ((*zvp)->z_unmounted) { 844 /* 845 * XXX we could probably try again, since the unmounting 846 * thread should be just about to disassociate the 847 * objset from the zfsvfs. 848 */ 849 rrw_exit(&(*zvp)->z_teardown_lock, tag); 850 return (EBUSY); 851 } 852 } 853 return (error); 854 } 855 856 static void 857 zfsvfs_rele(zfsvfs_t *zfsvfs, void *tag) 858 { 859 rrw_exit(&zfsvfs->z_teardown_lock, tag); 860 861 if (zfsvfs->z_vfs) { 862 VFS_RELE(zfsvfs->z_vfs); 863 } else { 864 dmu_objset_disown(zfsvfs->z_os, zfsvfs); 865 zfsvfs_free(zfsvfs); 866 } 867 } 868 869 static int 870 zfs_ioc_pool_create(zfs_cmd_t *zc) 871 { 872 int error; 873 nvlist_t *config, *props = NULL; 874 nvlist_t *rootprops = NULL; 875 nvlist_t *zplprops = NULL; 876 char *buf; 877 878 if (error = get_nvlist(zc->zc_nvlist_conf, zc->zc_nvlist_conf_size, 879 zc->zc_iflags, &config)) 880 return (error); 881 882 if (zc->zc_nvlist_src_size != 0 && (error = 883 get_nvlist(zc->zc_nvlist_src, zc->zc_nvlist_src_size, 884 zc->zc_iflags, &props))) { 885 nvlist_free(config); 886 return (error); 887 } 888 889 if (props) { 890 nvlist_t *nvl = NULL; 891 uint64_t version = SPA_VERSION; 892 893 (void) nvlist_lookup_uint64(props, 894 zpool_prop_to_name(ZPOOL_PROP_VERSION), &version); 895 if (version < SPA_VERSION_INITIAL || version > SPA_VERSION) { 896 error = EINVAL; 897 goto pool_props_bad; 898 } 899 (void) nvlist_lookup_nvlist(props, ZPOOL_ROOTFS_PROPS, &nvl); 900 if (nvl) { 901 error = nvlist_dup(nvl, &rootprops, KM_SLEEP); 902 if (error != 0) { 903 nvlist_free(config); 904 nvlist_free(props); 905 return (error); 906 } 907 (void) nvlist_remove_all(props, ZPOOL_ROOTFS_PROPS); 908 } 909 VERIFY(nvlist_alloc(&zplprops, NV_UNIQUE_NAME, KM_SLEEP) == 0); 910 error = zfs_fill_zplprops_root(version, rootprops, 911 zplprops, NULL); 912 if (error) 913 goto pool_props_bad; 914 } 915 916 buf = history_str_get(zc); 917 918 error = spa_create(zc->zc_name, config, props, buf, zplprops); 919 920 /* 921 * Set the remaining root properties 922 */ 923 if (!error && 924 (error = zfs_set_prop_nvlist(zc->zc_name, rootprops)) != 0) 925 (void) spa_destroy(zc->zc_name); 926 927 if (buf != NULL) 928 history_str_free(buf); 929 930 pool_props_bad: 931 nvlist_free(rootprops); 932 nvlist_free(zplprops); 933 nvlist_free(config); 934 nvlist_free(props); 935 936 return (error); 937 } 938 939 static int 940 zfs_ioc_pool_destroy(zfs_cmd_t *zc) 941 { 942 int error; 943 zfs_log_history(zc); 944 error = spa_destroy(zc->zc_name); 945 if (error == 0) 946 zvol_remove_minors(zc->zc_name); 947 return (error); 948 } 949 950 static int 951 zfs_ioc_pool_import(zfs_cmd_t *zc) 952 { 953 nvlist_t *config, *props = NULL; 954 uint64_t guid; 955 int error; 956 957 if ((error = get_nvlist(zc->zc_nvlist_conf, zc->zc_nvlist_conf_size, 958 zc->zc_iflags, &config)) != 0) 959 return (error); 960 961 if (zc->zc_nvlist_src_size != 0 && (error = 962 get_nvlist(zc->zc_nvlist_src, zc->zc_nvlist_src_size, 963 zc->zc_iflags, &props))) { 964 nvlist_free(config); 965 return (error); 966 } 967 968 if (nvlist_lookup_uint64(config, ZPOOL_CONFIG_POOL_GUID, &guid) != 0 || 969 guid != zc->zc_guid) 970 error = EINVAL; 971 else if (zc->zc_cookie) 972 error = spa_import_verbatim(zc->zc_name, config, props); 973 else 974 error = spa_import(zc->zc_name, config, props); 975 976 if (zc->zc_nvlist_dst != 0) 977 (void) put_nvlist(zc, config); 978 979 nvlist_free(config); 980 981 if (props) 982 nvlist_free(props); 983 984 return (error); 985 } 986 987 static int 988 zfs_ioc_pool_export(zfs_cmd_t *zc) 989 { 990 int error; 991 boolean_t force = (boolean_t)zc->zc_cookie; 992 boolean_t hardforce = (boolean_t)zc->zc_guid; 993 994 zfs_log_history(zc); 995 error = spa_export(zc->zc_name, NULL, force, hardforce); 996 if (error == 0) 997 zvol_remove_minors(zc->zc_name); 998 return (error); 999 } 1000 1001 static int 1002 zfs_ioc_pool_configs(zfs_cmd_t *zc) 1003 { 1004 nvlist_t *configs; 1005 int error; 1006 1007 if ((configs = spa_all_configs(&zc->zc_cookie)) == NULL) 1008 return (EEXIST); 1009 1010 error = put_nvlist(zc, configs); 1011 1012 nvlist_free(configs); 1013 1014 return (error); 1015 } 1016 1017 static int 1018 zfs_ioc_pool_stats(zfs_cmd_t *zc) 1019 { 1020 nvlist_t *config; 1021 int error; 1022 int ret = 0; 1023 1024 error = spa_get_stats(zc->zc_name, &config, zc->zc_value, 1025 sizeof (zc->zc_value)); 1026 1027 if (config != NULL) { 1028 ret = put_nvlist(zc, config); 1029 nvlist_free(config); 1030 1031 /* 1032 * The config may be present even if 'error' is non-zero. 1033 * In this case we return success, and preserve the real errno 1034 * in 'zc_cookie'. 1035 */ 1036 zc->zc_cookie = error; 1037 } else { 1038 ret = error; 1039 } 1040 1041 return (ret); 1042 } 1043 1044 /* 1045 * Try to import the given pool, returning pool stats as appropriate so that 1046 * user land knows which devices are available and overall pool health. 1047 */ 1048 static int 1049 zfs_ioc_pool_tryimport(zfs_cmd_t *zc) 1050 { 1051 nvlist_t *tryconfig, *config; 1052 int error; 1053 1054 if ((error = get_nvlist(zc->zc_nvlist_conf, zc->zc_nvlist_conf_size, 1055 zc->zc_iflags, &tryconfig)) != 0) 1056 return (error); 1057 1058 config = spa_tryimport(tryconfig); 1059 1060 nvlist_free(tryconfig); 1061 1062 if (config == NULL) 1063 return (EINVAL); 1064 1065 error = put_nvlist(zc, config); 1066 nvlist_free(config); 1067 1068 return (error); 1069 } 1070 1071 static int 1072 zfs_ioc_pool_scrub(zfs_cmd_t *zc) 1073 { 1074 spa_t *spa; 1075 int error; 1076 1077 if ((error = spa_open(zc->zc_name, &spa, FTAG)) != 0) 1078 return (error); 1079 1080 error = spa_scrub(spa, zc->zc_cookie); 1081 1082 spa_close(spa, FTAG); 1083 1084 return (error); 1085 } 1086 1087 static int 1088 zfs_ioc_pool_freeze(zfs_cmd_t *zc) 1089 { 1090 spa_t *spa; 1091 int error; 1092 1093 error = spa_open(zc->zc_name, &spa, FTAG); 1094 if (error == 0) { 1095 spa_freeze(spa); 1096 spa_close(spa, FTAG); 1097 } 1098 return (error); 1099 } 1100 1101 static int 1102 zfs_ioc_pool_upgrade(zfs_cmd_t *zc) 1103 { 1104 spa_t *spa; 1105 int error; 1106 1107 if ((error = spa_open(zc->zc_name, &spa, FTAG)) != 0) 1108 return (error); 1109 1110 if (zc->zc_cookie < spa_version(spa) || zc->zc_cookie > SPA_VERSION) { 1111 spa_close(spa, FTAG); 1112 return (EINVAL); 1113 } 1114 1115 spa_upgrade(spa, zc->zc_cookie); 1116 spa_close(spa, FTAG); 1117 1118 return (error); 1119 } 1120 1121 static int 1122 zfs_ioc_pool_get_history(zfs_cmd_t *zc) 1123 { 1124 spa_t *spa; 1125 char *hist_buf; 1126 uint64_t size; 1127 int error; 1128 1129 if ((size = zc->zc_history_len) == 0) 1130 return (EINVAL); 1131 1132 if ((error = spa_open(zc->zc_name, &spa, FTAG)) != 0) 1133 return (error); 1134 1135 if (spa_version(spa) < SPA_VERSION_ZPOOL_HISTORY) { 1136 spa_close(spa, FTAG); 1137 return (ENOTSUP); 1138 } 1139 1140 hist_buf = kmem_alloc(size, KM_SLEEP); 1141 if ((error = spa_history_get(spa, &zc->zc_history_offset, 1142 &zc->zc_history_len, hist_buf)) == 0) { 1143 error = ddi_copyout(hist_buf, 1144 (void *)(uintptr_t)zc->zc_history, 1145 zc->zc_history_len, zc->zc_iflags); 1146 } 1147 1148 spa_close(spa, FTAG); 1149 kmem_free(hist_buf, size); 1150 return (error); 1151 } 1152 1153 static int 1154 zfs_ioc_dsobj_to_dsname(zfs_cmd_t *zc) 1155 { 1156 int error; 1157 1158 if (error = dsl_dsobj_to_dsname(zc->zc_name, zc->zc_obj, zc->zc_value)) 1159 return (error); 1160 1161 return (0); 1162 } 1163 1164 /* 1165 * inputs: 1166 * zc_name name of filesystem 1167 * zc_obj object to find 1168 * 1169 * outputs: 1170 * zc_value name of object 1171 */ 1172 static int 1173 zfs_ioc_obj_to_path(zfs_cmd_t *zc) 1174 { 1175 objset_t *os; 1176 int error; 1177 1178 /* XXX reading from objset not owned */ 1179 if ((error = dmu_objset_hold(zc->zc_name, FTAG, &os)) != 0) 1180 return (error); 1181 if (dmu_objset_type(os) != DMU_OST_ZFS) { 1182 dmu_objset_rele(os, FTAG); 1183 return (EINVAL); 1184 } 1185 error = zfs_obj_to_path(os, zc->zc_obj, zc->zc_value, 1186 sizeof (zc->zc_value)); 1187 dmu_objset_rele(os, FTAG); 1188 1189 return (error); 1190 } 1191 1192 static int 1193 zfs_ioc_vdev_add(zfs_cmd_t *zc) 1194 { 1195 spa_t *spa; 1196 int error; 1197 nvlist_t *config, **l2cache, **spares; 1198 uint_t nl2cache = 0, nspares = 0; 1199 1200 error = spa_open(zc->zc_name, &spa, FTAG); 1201 if (error != 0) 1202 return (error); 1203 1204 error = get_nvlist(zc->zc_nvlist_conf, zc->zc_nvlist_conf_size, 1205 zc->zc_iflags, &config); 1206 (void) nvlist_lookup_nvlist_array(config, ZPOOL_CONFIG_L2CACHE, 1207 &l2cache, &nl2cache); 1208 1209 (void) nvlist_lookup_nvlist_array(config, ZPOOL_CONFIG_SPARES, 1210 &spares, &nspares); 1211 1212 /* 1213 * A root pool with concatenated devices is not supported. 1214 * Thus, can not add a device to a root pool. 1215 * 1216 * Intent log device can not be added to a rootpool because 1217 * during mountroot, zil is replayed, a seperated log device 1218 * can not be accessed during the mountroot time. 1219 * 1220 * l2cache and spare devices are ok to be added to a rootpool. 1221 */ 1222 if (spa->spa_bootfs != 0 && nl2cache == 0 && nspares == 0) { 1223 spa_close(spa, FTAG); 1224 return (EDOM); 1225 } 1226 1227 if (error == 0) { 1228 error = spa_vdev_add(spa, config); 1229 nvlist_free(config); 1230 } 1231 spa_close(spa, FTAG); 1232 return (error); 1233 } 1234 1235 static int 1236 zfs_ioc_vdev_remove(zfs_cmd_t *zc) 1237 { 1238 spa_t *spa; 1239 int error; 1240 1241 error = spa_open(zc->zc_name, &spa, FTAG); 1242 if (error != 0) 1243 return (error); 1244 error = spa_vdev_remove(spa, zc->zc_guid, B_FALSE); 1245 spa_close(spa, FTAG); 1246 return (error); 1247 } 1248 1249 static int 1250 zfs_ioc_vdev_set_state(zfs_cmd_t *zc) 1251 { 1252 spa_t *spa; 1253 int error; 1254 vdev_state_t newstate = VDEV_STATE_UNKNOWN; 1255 1256 if ((error = spa_open(zc->zc_name, &spa, FTAG)) != 0) 1257 return (error); 1258 switch (zc->zc_cookie) { 1259 case VDEV_STATE_ONLINE: 1260 error = vdev_online(spa, zc->zc_guid, zc->zc_obj, &newstate); 1261 break; 1262 1263 case VDEV_STATE_OFFLINE: 1264 error = vdev_offline(spa, zc->zc_guid, zc->zc_obj); 1265 break; 1266 1267 case VDEV_STATE_FAULTED: 1268 if (zc->zc_obj != VDEV_AUX_ERR_EXCEEDED && 1269 zc->zc_obj != VDEV_AUX_EXTERNAL) 1270 zc->zc_obj = VDEV_AUX_ERR_EXCEEDED; 1271 1272 error = vdev_fault(spa, zc->zc_guid, zc->zc_obj); 1273 break; 1274 1275 case VDEV_STATE_DEGRADED: 1276 if (zc->zc_obj != VDEV_AUX_ERR_EXCEEDED && 1277 zc->zc_obj != VDEV_AUX_EXTERNAL) 1278 zc->zc_obj = VDEV_AUX_ERR_EXCEEDED; 1279 1280 error = vdev_degrade(spa, zc->zc_guid, zc->zc_obj); 1281 break; 1282 1283 default: 1284 error = EINVAL; 1285 } 1286 zc->zc_cookie = newstate; 1287 spa_close(spa, FTAG); 1288 return (error); 1289 } 1290 1291 static int 1292 zfs_ioc_vdev_attach(zfs_cmd_t *zc) 1293 { 1294 spa_t *spa; 1295 int replacing = zc->zc_cookie; 1296 nvlist_t *config; 1297 int error; 1298 1299 if ((error = spa_open(zc->zc_name, &spa, FTAG)) != 0) 1300 return (error); 1301 1302 if ((error = get_nvlist(zc->zc_nvlist_conf, zc->zc_nvlist_conf_size, 1303 zc->zc_iflags, &config)) == 0) { 1304 error = spa_vdev_attach(spa, zc->zc_guid, config, replacing); 1305 nvlist_free(config); 1306 } 1307 1308 spa_close(spa, FTAG); 1309 return (error); 1310 } 1311 1312 static int 1313 zfs_ioc_vdev_detach(zfs_cmd_t *zc) 1314 { 1315 spa_t *spa; 1316 int error; 1317 1318 if ((error = spa_open(zc->zc_name, &spa, FTAG)) != 0) 1319 return (error); 1320 1321 error = spa_vdev_detach(spa, zc->zc_guid, 0, B_FALSE); 1322 1323 spa_close(spa, FTAG); 1324 return (error); 1325 } 1326 1327 static int 1328 zfs_ioc_vdev_setpath(zfs_cmd_t *zc) 1329 { 1330 spa_t *spa; 1331 char *path = zc->zc_value; 1332 uint64_t guid = zc->zc_guid; 1333 int error; 1334 1335 error = spa_open(zc->zc_name, &spa, FTAG); 1336 if (error != 0) 1337 return (error); 1338 1339 error = spa_vdev_setpath(spa, guid, path); 1340 spa_close(spa, FTAG); 1341 return (error); 1342 } 1343 1344 static int 1345 zfs_ioc_vdev_setfru(zfs_cmd_t *zc) 1346 { 1347 spa_t *spa; 1348 char *fru = zc->zc_value; 1349 uint64_t guid = zc->zc_guid; 1350 int error; 1351 1352 error = spa_open(zc->zc_name, &spa, FTAG); 1353 if (error != 0) 1354 return (error); 1355 1356 error = spa_vdev_setfru(spa, guid, fru); 1357 spa_close(spa, FTAG); 1358 return (error); 1359 } 1360 1361 /* 1362 * inputs: 1363 * zc_name name of filesystem 1364 * zc_nvlist_dst_size size of buffer for property nvlist 1365 * 1366 * outputs: 1367 * zc_objset_stats stats 1368 * zc_nvlist_dst property nvlist 1369 * zc_nvlist_dst_size size of property nvlist 1370 */ 1371 static int 1372 zfs_ioc_objset_stats(zfs_cmd_t *zc) 1373 { 1374 objset_t *os = NULL; 1375 int error; 1376 nvlist_t *nv; 1377 1378 if (error = dmu_objset_hold(zc->zc_name, FTAG, &os)) 1379 return (error); 1380 1381 dmu_objset_fast_stat(os, &zc->zc_objset_stats); 1382 1383 if (zc->zc_nvlist_dst != 0 && 1384 (error = dsl_prop_get_all(os, &nv, FALSE)) == 0) { 1385 dmu_objset_stats(os, nv); 1386 /* 1387 * NB: zvol_get_stats() will read the objset contents, 1388 * which we aren't supposed to do with a 1389 * DS_MODE_USER hold, because it could be 1390 * inconsistent. So this is a bit of a workaround... 1391 * XXX reading with out owning 1392 */ 1393 if (!zc->zc_objset_stats.dds_inconsistent) { 1394 if (dmu_objset_type(os) == DMU_OST_ZVOL) 1395 VERIFY(zvol_get_stats(os, nv) == 0); 1396 } 1397 error = put_nvlist(zc, nv); 1398 nvlist_free(nv); 1399 } 1400 1401 dmu_objset_rele(os, FTAG); 1402 return (error); 1403 } 1404 1405 static int 1406 nvl_add_zplprop(objset_t *os, nvlist_t *props, zfs_prop_t prop) 1407 { 1408 uint64_t value; 1409 int error; 1410 1411 /* 1412 * zfs_get_zplprop() will either find a value or give us 1413 * the default value (if there is one). 1414 */ 1415 if ((error = zfs_get_zplprop(os, prop, &value)) != 0) 1416 return (error); 1417 VERIFY(nvlist_add_uint64(props, zfs_prop_to_name(prop), value) == 0); 1418 return (0); 1419 } 1420 1421 /* 1422 * inputs: 1423 * zc_name name of filesystem 1424 * zc_nvlist_dst_size size of buffer for zpl property nvlist 1425 * 1426 * outputs: 1427 * zc_nvlist_dst zpl property nvlist 1428 * zc_nvlist_dst_size size of zpl property nvlist 1429 */ 1430 static int 1431 zfs_ioc_objset_zplprops(zfs_cmd_t *zc) 1432 { 1433 objset_t *os; 1434 int err; 1435 1436 /* XXX reading without owning */ 1437 if (err = dmu_objset_hold(zc->zc_name, FTAG, &os)) 1438 return (err); 1439 1440 dmu_objset_fast_stat(os, &zc->zc_objset_stats); 1441 1442 /* 1443 * NB: nvl_add_zplprop() will read the objset contents, 1444 * which we aren't supposed to do with a DS_MODE_USER 1445 * hold, because it could be inconsistent. 1446 */ 1447 if (zc->zc_nvlist_dst != NULL && 1448 !zc->zc_objset_stats.dds_inconsistent && 1449 dmu_objset_type(os) == DMU_OST_ZFS) { 1450 nvlist_t *nv; 1451 1452 VERIFY(nvlist_alloc(&nv, NV_UNIQUE_NAME, KM_SLEEP) == 0); 1453 if ((err = nvl_add_zplprop(os, nv, ZFS_PROP_VERSION)) == 0 && 1454 (err = nvl_add_zplprop(os, nv, ZFS_PROP_NORMALIZE)) == 0 && 1455 (err = nvl_add_zplprop(os, nv, ZFS_PROP_UTF8ONLY)) == 0 && 1456 (err = nvl_add_zplprop(os, nv, ZFS_PROP_CASE)) == 0) 1457 err = put_nvlist(zc, nv); 1458 nvlist_free(nv); 1459 } else { 1460 err = ENOENT; 1461 } 1462 dmu_objset_rele(os, FTAG); 1463 return (err); 1464 } 1465 1466 static boolean_t 1467 dataset_name_hidden(const char *name) 1468 { 1469 /* 1470 * Skip over datasets that are not visible in this zone, 1471 * internal datasets (which have a $ in their name), and 1472 * temporary datasets (which have a % in their name). 1473 */ 1474 if (strchr(name, '$') != NULL) 1475 return (B_TRUE); 1476 if (strchr(name, '%') != NULL) 1477 return (B_TRUE); 1478 if (!INGLOBALZONE(curproc) && !zone_dataset_visible(name, NULL)) 1479 return (B_TRUE); 1480 return (B_FALSE); 1481 } 1482 1483 /* 1484 * inputs: 1485 * zc_name name of filesystem 1486 * zc_cookie zap cursor 1487 * zc_nvlist_dst_size size of buffer for property nvlist 1488 * 1489 * outputs: 1490 * zc_name name of next filesystem 1491 * zc_cookie zap cursor 1492 * zc_objset_stats stats 1493 * zc_nvlist_dst property nvlist 1494 * zc_nvlist_dst_size size of property nvlist 1495 */ 1496 static int 1497 zfs_ioc_dataset_list_next(zfs_cmd_t *zc) 1498 { 1499 objset_t *os; 1500 int error; 1501 char *p; 1502 1503 if (error = dmu_objset_hold(zc->zc_name, FTAG, &os)) { 1504 if (error == ENOENT) 1505 error = ESRCH; 1506 return (error); 1507 } 1508 1509 p = strrchr(zc->zc_name, '/'); 1510 if (p == NULL || p[1] != '\0') 1511 (void) strlcat(zc->zc_name, "/", sizeof (zc->zc_name)); 1512 p = zc->zc_name + strlen(zc->zc_name); 1513 1514 /* 1515 * Pre-fetch the datasets. dmu_objset_prefetch() always returns 0 1516 * but is not declared void because its called by dmu_objset_find(). 1517 */ 1518 if (zc->zc_cookie == 0) { 1519 uint64_t cookie = 0; 1520 int len = sizeof (zc->zc_name) - (p - zc->zc_name); 1521 1522 while (dmu_dir_list_next(os, len, p, NULL, &cookie) == 0) 1523 (void) dmu_objset_prefetch(p, NULL); 1524 } 1525 1526 do { 1527 error = dmu_dir_list_next(os, 1528 sizeof (zc->zc_name) - (p - zc->zc_name), p, 1529 NULL, &zc->zc_cookie); 1530 if (error == ENOENT) 1531 error = ESRCH; 1532 } while (error == 0 && dataset_name_hidden(zc->zc_name) && 1533 !(zc->zc_iflags & FKIOCTL)); 1534 dmu_objset_rele(os, FTAG); 1535 1536 /* 1537 * If it's an internal dataset (ie. with a '$' in its name), 1538 * don't try to get stats for it, otherwise we'll return ENOENT. 1539 */ 1540 if (error == 0 && strchr(zc->zc_name, '$') == NULL) 1541 error = zfs_ioc_objset_stats(zc); /* fill in the stats */ 1542 return (error); 1543 } 1544 1545 /* 1546 * inputs: 1547 * zc_name name of filesystem 1548 * zc_cookie zap cursor 1549 * zc_nvlist_dst_size size of buffer for property nvlist 1550 * 1551 * outputs: 1552 * zc_name name of next snapshot 1553 * zc_objset_stats stats 1554 * zc_nvlist_dst property nvlist 1555 * zc_nvlist_dst_size size of property nvlist 1556 */ 1557 static int 1558 zfs_ioc_snapshot_list_next(zfs_cmd_t *zc) 1559 { 1560 objset_t *os; 1561 int error; 1562 1563 if (zc->zc_cookie == 0) 1564 (void) dmu_objset_find(zc->zc_name, dmu_objset_prefetch, 1565 NULL, DS_FIND_SNAPSHOTS); 1566 1567 error = dmu_objset_hold(zc->zc_name, FTAG, &os); 1568 if (error) 1569 return (error == ENOENT ? ESRCH : error); 1570 1571 /* 1572 * A dataset name of maximum length cannot have any snapshots, 1573 * so exit immediately. 1574 */ 1575 if (strlcat(zc->zc_name, "@", sizeof (zc->zc_name)) >= MAXNAMELEN) { 1576 dmu_objset_rele(os, FTAG); 1577 return (ESRCH); 1578 } 1579 1580 error = dmu_snapshot_list_next(os, 1581 sizeof (zc->zc_name) - strlen(zc->zc_name), 1582 zc->zc_name + strlen(zc->zc_name), NULL, &zc->zc_cookie, NULL); 1583 dmu_objset_rele(os, FTAG); 1584 if (error == 0) 1585 error = zfs_ioc_objset_stats(zc); /* fill in the stats */ 1586 else if (error == ENOENT) 1587 error = ESRCH; 1588 1589 /* if we failed, undo the @ that we tacked on to zc_name */ 1590 if (error) 1591 *strchr(zc->zc_name, '@') = '\0'; 1592 return (error); 1593 } 1594 1595 int 1596 zfs_set_prop_nvlist(const char *name, nvlist_t *nvl) 1597 { 1598 nvpair_t *elem; 1599 int error = 0; 1600 uint64_t intval; 1601 char *strval; 1602 nvlist_t *genericnvl; 1603 boolean_t issnap = (strchr(name, '@') != NULL); 1604 1605 /* 1606 * First validate permission to set all of the properties 1607 */ 1608 elem = NULL; 1609 while ((elem = nvlist_next_nvpair(nvl, elem)) != NULL) { 1610 const char *propname = nvpair_name(elem); 1611 zfs_prop_t prop = zfs_name_to_prop(propname); 1612 1613 if (prop == ZPROP_INVAL) { 1614 /* 1615 * If this is a user-defined property, it must be a 1616 * string, and there is no further validation to do. 1617 */ 1618 if (zfs_prop_user(propname) && 1619 nvpair_type(elem) == DATA_TYPE_STRING) { 1620 if (error = zfs_secpolicy_write_perms(name, 1621 ZFS_DELEG_PERM_USERPROP, CRED())) 1622 return (error); 1623 continue; 1624 } 1625 1626 if (!issnap && zfs_prop_userquota(propname) && 1627 nvpair_type(elem) == DATA_TYPE_UINT64_ARRAY) { 1628 const char *perm; 1629 const char *up = zfs_userquota_prop_prefixes 1630 [ZFS_PROP_USERQUOTA]; 1631 if (strncmp(propname, up, strlen(up)) == 0) 1632 perm = ZFS_DELEG_PERM_USERQUOTA; 1633 else 1634 perm = ZFS_DELEG_PERM_GROUPQUOTA; 1635 if (error = zfs_secpolicy_write_perms(name, 1636 perm, CRED())) 1637 return (error); 1638 continue; 1639 } 1640 1641 return (EINVAL); 1642 } 1643 1644 if (issnap) 1645 return (EINVAL); 1646 1647 if ((error = zfs_secpolicy_setprop(name, prop, CRED())) != 0) 1648 return (error); 1649 1650 /* 1651 * Check that this value is valid for this pool version 1652 */ 1653 switch (prop) { 1654 case ZFS_PROP_COMPRESSION: 1655 /* 1656 * If the user specified gzip compression, make sure 1657 * the SPA supports it. We ignore any errors here since 1658 * we'll catch them later. 1659 */ 1660 if (nvpair_type(elem) == DATA_TYPE_UINT64 && 1661 nvpair_value_uint64(elem, &intval) == 0) { 1662 if (intval >= ZIO_COMPRESS_GZIP_1 && 1663 intval <= ZIO_COMPRESS_GZIP_9 && 1664 zfs_earlier_version(name, 1665 SPA_VERSION_GZIP_COMPRESSION)) 1666 return (ENOTSUP); 1667 1668 /* 1669 * If this is a bootable dataset then 1670 * verify that the compression algorithm 1671 * is supported for booting. We must return 1672 * something other than ENOTSUP since it 1673 * implies a downrev pool version. 1674 */ 1675 if (zfs_is_bootfs(name) && 1676 !BOOTFS_COMPRESS_VALID(intval)) 1677 return (ERANGE); 1678 } 1679 break; 1680 1681 case ZFS_PROP_COPIES: 1682 if (zfs_earlier_version(name, SPA_VERSION_DITTO_BLOCKS)) 1683 return (ENOTSUP); 1684 break; 1685 1686 case ZFS_PROP_SHARESMB: 1687 if (zpl_earlier_version(name, ZPL_VERSION_FUID)) 1688 return (ENOTSUP); 1689 break; 1690 1691 case ZFS_PROP_ACLINHERIT: 1692 if (nvpair_type(elem) == DATA_TYPE_UINT64 && 1693 nvpair_value_uint64(elem, &intval) == 0) 1694 if (intval == ZFS_ACL_PASSTHROUGH_X && 1695 zfs_earlier_version(name, 1696 SPA_VERSION_PASSTHROUGH_X)) 1697 return (ENOTSUP); 1698 } 1699 } 1700 1701 VERIFY(nvlist_alloc(&genericnvl, NV_UNIQUE_NAME, KM_SLEEP) == 0); 1702 elem = NULL; 1703 while ((elem = nvlist_next_nvpair(nvl, elem)) != NULL) { 1704 const char *propname = nvpair_name(elem); 1705 zfs_prop_t prop = zfs_name_to_prop(propname); 1706 1707 if (prop == ZPROP_INVAL) { 1708 if (zfs_prop_userquota(propname)) { 1709 uint64_t *valary; 1710 unsigned int vallen; 1711 const char *domain; 1712 zfs_userquota_prop_t type; 1713 uint64_t rid; 1714 uint64_t quota; 1715 zfsvfs_t *zfsvfs; 1716 1717 VERIFY(nvpair_value_uint64_array(elem, 1718 &valary, &vallen) == 0); 1719 VERIFY(vallen == 3); 1720 type = valary[0]; 1721 rid = valary[1]; 1722 quota = valary[2]; 1723 domain = propname + 1724 strlen(zfs_userquota_prop_prefixes[type]); 1725 1726 error = zfsvfs_hold(name, FTAG, &zfsvfs); 1727 if (error == 0) { 1728 error = zfs_set_userquota(zfsvfs, 1729 type, domain, rid, quota); 1730 zfsvfs_rele(zfsvfs, FTAG); 1731 } 1732 if (error == 0) 1733 continue; 1734 else 1735 goto out; 1736 } else if (zfs_prop_user(propname)) { 1737 VERIFY(nvpair_value_string(elem, &strval) == 0); 1738 error = dsl_prop_set(name, propname, 1, 1739 strlen(strval) + 1, strval); 1740 if (error == 0) 1741 continue; 1742 else 1743 goto out; 1744 } 1745 } 1746 1747 switch (prop) { 1748 case ZFS_PROP_QUOTA: 1749 if ((error = nvpair_value_uint64(elem, &intval)) != 0 || 1750 (error = dsl_dir_set_quota(name, intval)) != 0) 1751 goto out; 1752 break; 1753 1754 case ZFS_PROP_REFQUOTA: 1755 if ((error = nvpair_value_uint64(elem, &intval)) != 0 || 1756 (error = dsl_dataset_set_quota(name, intval)) != 0) 1757 goto out; 1758 break; 1759 1760 case ZFS_PROP_RESERVATION: 1761 if ((error = nvpair_value_uint64(elem, &intval)) != 0 || 1762 (error = dsl_dir_set_reservation(name, 1763 intval)) != 0) 1764 goto out; 1765 break; 1766 1767 case ZFS_PROP_REFRESERVATION: 1768 if ((error = nvpair_value_uint64(elem, &intval)) != 0 || 1769 (error = dsl_dataset_set_reservation(name, 1770 intval)) != 0) 1771 goto out; 1772 break; 1773 1774 case ZFS_PROP_VOLSIZE: 1775 if ((error = nvpair_value_uint64(elem, &intval)) != 0 || 1776 (error = zvol_set_volsize(name, 1777 ddi_driver_major(zfs_dip), intval)) != 0) 1778 goto out; 1779 break; 1780 1781 case ZFS_PROP_VERSION: 1782 { 1783 zfsvfs_t *zfsvfs; 1784 1785 if ((error = nvpair_value_uint64(elem, &intval)) != 0) 1786 goto out; 1787 if ((error = zfsvfs_hold(name, FTAG, &zfsvfs)) != 0) 1788 goto out; 1789 error = zfs_set_version(zfsvfs, intval); 1790 zfsvfs_rele(zfsvfs, FTAG); 1791 1792 if (error == 0 && intval >= ZPL_VERSION_USERSPACE) { 1793 zfs_cmd_t zc = { 0 }; 1794 (void) strcpy(zc.zc_name, name); 1795 (void) zfs_ioc_userspace_upgrade(&zc); 1796 } 1797 if (error) 1798 goto out; 1799 break; 1800 } 1801 1802 default: 1803 if (nvpair_type(elem) == DATA_TYPE_STRING) { 1804 if (zfs_prop_get_type(prop) != 1805 PROP_TYPE_STRING) { 1806 error = EINVAL; 1807 goto out; 1808 } 1809 } else if (nvpair_type(elem) == DATA_TYPE_UINT64) { 1810 const char *unused; 1811 1812 VERIFY(nvpair_value_uint64(elem, &intval) == 0); 1813 1814 switch (zfs_prop_get_type(prop)) { 1815 case PROP_TYPE_NUMBER: 1816 break; 1817 case PROP_TYPE_STRING: 1818 error = EINVAL; 1819 goto out; 1820 case PROP_TYPE_INDEX: 1821 if (zfs_prop_index_to_string(prop, 1822 intval, &unused) != 0) { 1823 error = EINVAL; 1824 goto out; 1825 } 1826 break; 1827 default: 1828 cmn_err(CE_PANIC, 1829 "unknown property type"); 1830 break; 1831 } 1832 } else { 1833 error = EINVAL; 1834 goto out; 1835 } 1836 if ((error = nvlist_add_nvpair(genericnvl, elem)) != 0) 1837 goto out; 1838 } 1839 } 1840 1841 if (nvlist_next_nvpair(genericnvl, NULL) != NULL) { 1842 error = dsl_props_set(name, genericnvl); 1843 } 1844 out: 1845 nvlist_free(genericnvl); 1846 return (error); 1847 } 1848 1849 /* 1850 * Check that all the properties are valid user properties. 1851 */ 1852 static int 1853 zfs_check_userprops(char *fsname, nvlist_t *nvl) 1854 { 1855 nvpair_t *elem = NULL; 1856 int error = 0; 1857 1858 while ((elem = nvlist_next_nvpair(nvl, elem)) != NULL) { 1859 const char *propname = nvpair_name(elem); 1860 char *valstr; 1861 1862 if (!zfs_prop_user(propname) || 1863 nvpair_type(elem) != DATA_TYPE_STRING) 1864 return (EINVAL); 1865 1866 if (error = zfs_secpolicy_write_perms(fsname, 1867 ZFS_DELEG_PERM_USERPROP, CRED())) 1868 return (error); 1869 1870 if (strlen(propname) >= ZAP_MAXNAMELEN) 1871 return (ENAMETOOLONG); 1872 1873 VERIFY(nvpair_value_string(elem, &valstr) == 0); 1874 if (strlen(valstr) >= ZAP_MAXVALUELEN) 1875 return (E2BIG); 1876 } 1877 return (0); 1878 } 1879 1880 /* 1881 * inputs: 1882 * zc_name name of filesystem 1883 * zc_value name of property to set 1884 * zc_nvlist_src{_size} nvlist of properties to apply 1885 * zc_cookie clear existing local props? 1886 * 1887 * outputs: none 1888 */ 1889 static int 1890 zfs_ioc_set_prop(zfs_cmd_t *zc) 1891 { 1892 nvlist_t *nvl; 1893 int error; 1894 1895 if ((error = get_nvlist(zc->zc_nvlist_src, zc->zc_nvlist_src_size, 1896 zc->zc_iflags, &nvl)) != 0) 1897 return (error); 1898 1899 if (zc->zc_cookie) { 1900 nvlist_t *origprops; 1901 objset_t *os; 1902 1903 if (dmu_objset_hold(zc->zc_name, FTAG, &os) == 0) { 1904 if (dsl_prop_get_all(os, &origprops, TRUE) == 0) { 1905 clear_props(zc->zc_name, origprops, nvl); 1906 nvlist_free(origprops); 1907 } 1908 dmu_objset_rele(os, FTAG); 1909 } 1910 1911 } 1912 1913 error = zfs_set_prop_nvlist(zc->zc_name, nvl); 1914 1915 nvlist_free(nvl); 1916 return (error); 1917 } 1918 1919 /* 1920 * inputs: 1921 * zc_name name of filesystem 1922 * zc_value name of property to inherit 1923 * 1924 * outputs: none 1925 */ 1926 static int 1927 zfs_ioc_inherit_prop(zfs_cmd_t *zc) 1928 { 1929 /* the property name has been validated by zfs_secpolicy_inherit() */ 1930 return (dsl_prop_set(zc->zc_name, zc->zc_value, 0, 0, NULL)); 1931 } 1932 1933 static int 1934 zfs_ioc_pool_set_props(zfs_cmd_t *zc) 1935 { 1936 nvlist_t *props; 1937 spa_t *spa; 1938 int error; 1939 nvpair_t *elem; 1940 1941 if ((error = get_nvlist(zc->zc_nvlist_src, zc->zc_nvlist_src_size, 1942 zc->zc_iflags, &props))) 1943 return (error); 1944 1945 /* 1946 * If the only property is the configfile, then just do a spa_lookup() 1947 * to handle the faulted case. 1948 */ 1949 elem = nvlist_next_nvpair(props, NULL); 1950 if (elem != NULL && strcmp(nvpair_name(elem), 1951 zpool_prop_to_name(ZPOOL_PROP_CACHEFILE)) == 0 && 1952 nvlist_next_nvpair(props, elem) == NULL) { 1953 mutex_enter(&spa_namespace_lock); 1954 if ((spa = spa_lookup(zc->zc_name)) != NULL) { 1955 spa_configfile_set(spa, props, B_FALSE); 1956 spa_config_sync(spa, B_FALSE, B_TRUE); 1957 } 1958 mutex_exit(&spa_namespace_lock); 1959 if (spa != NULL) { 1960 nvlist_free(props); 1961 return (0); 1962 } 1963 } 1964 1965 if ((error = spa_open(zc->zc_name, &spa, FTAG)) != 0) { 1966 nvlist_free(props); 1967 return (error); 1968 } 1969 1970 error = spa_prop_set(spa, props); 1971 1972 nvlist_free(props); 1973 spa_close(spa, FTAG); 1974 1975 return (error); 1976 } 1977 1978 static int 1979 zfs_ioc_pool_get_props(zfs_cmd_t *zc) 1980 { 1981 spa_t *spa; 1982 int error; 1983 nvlist_t *nvp = NULL; 1984 1985 if ((error = spa_open(zc->zc_name, &spa, FTAG)) != 0) { 1986 /* 1987 * If the pool is faulted, there may be properties we can still 1988 * get (such as altroot and cachefile), so attempt to get them 1989 * anyway. 1990 */ 1991 mutex_enter(&spa_namespace_lock); 1992 if ((spa = spa_lookup(zc->zc_name)) != NULL) 1993 error = spa_prop_get(spa, &nvp); 1994 mutex_exit(&spa_namespace_lock); 1995 } else { 1996 error = spa_prop_get(spa, &nvp); 1997 spa_close(spa, FTAG); 1998 } 1999 2000 if (error == 0 && zc->zc_nvlist_dst != NULL) 2001 error = put_nvlist(zc, nvp); 2002 else 2003 error = EFAULT; 2004 2005 nvlist_free(nvp); 2006 return (error); 2007 } 2008 2009 static int 2010 zfs_ioc_iscsi_perm_check(zfs_cmd_t *zc) 2011 { 2012 nvlist_t *nvp; 2013 int error; 2014 uint32_t uid; 2015 uint32_t gid; 2016 uint32_t *groups; 2017 uint_t group_cnt; 2018 cred_t *usercred; 2019 2020 if ((error = get_nvlist(zc->zc_nvlist_src, zc->zc_nvlist_src_size, 2021 zc->zc_iflags, &nvp)) != 0) { 2022 return (error); 2023 } 2024 2025 if ((error = nvlist_lookup_uint32(nvp, 2026 ZFS_DELEG_PERM_UID, &uid)) != 0) { 2027 nvlist_free(nvp); 2028 return (EPERM); 2029 } 2030 2031 if ((error = nvlist_lookup_uint32(nvp, 2032 ZFS_DELEG_PERM_GID, &gid)) != 0) { 2033 nvlist_free(nvp); 2034 return (EPERM); 2035 } 2036 2037 if ((error = nvlist_lookup_uint32_array(nvp, ZFS_DELEG_PERM_GROUPS, 2038 &groups, &group_cnt)) != 0) { 2039 nvlist_free(nvp); 2040 return (EPERM); 2041 } 2042 usercred = cralloc(); 2043 if ((crsetugid(usercred, uid, gid) != 0) || 2044 (crsetgroups(usercred, group_cnt, (gid_t *)groups) != 0)) { 2045 nvlist_free(nvp); 2046 crfree(usercred); 2047 return (EPERM); 2048 } 2049 nvlist_free(nvp); 2050 error = dsl_deleg_access(zc->zc_name, 2051 zfs_prop_to_name(ZFS_PROP_SHAREISCSI), usercred); 2052 crfree(usercred); 2053 return (error); 2054 } 2055 2056 /* 2057 * inputs: 2058 * zc_name name of filesystem 2059 * zc_nvlist_src{_size} nvlist of delegated permissions 2060 * zc_perm_action allow/unallow flag 2061 * 2062 * outputs: none 2063 */ 2064 static int 2065 zfs_ioc_set_fsacl(zfs_cmd_t *zc) 2066 { 2067 int error; 2068 nvlist_t *fsaclnv = NULL; 2069 2070 if ((error = get_nvlist(zc->zc_nvlist_src, zc->zc_nvlist_src_size, 2071 zc->zc_iflags, &fsaclnv)) != 0) 2072 return (error); 2073 2074 /* 2075 * Verify nvlist is constructed correctly 2076 */ 2077 if ((error = zfs_deleg_verify_nvlist(fsaclnv)) != 0) { 2078 nvlist_free(fsaclnv); 2079 return (EINVAL); 2080 } 2081 2082 /* 2083 * If we don't have PRIV_SYS_MOUNT, then validate 2084 * that user is allowed to hand out each permission in 2085 * the nvlist(s) 2086 */ 2087 2088 error = secpolicy_zfs(CRED()); 2089 if (error) { 2090 if (zc->zc_perm_action == B_FALSE) { 2091 error = dsl_deleg_can_allow(zc->zc_name, 2092 fsaclnv, CRED()); 2093 } else { 2094 error = dsl_deleg_can_unallow(zc->zc_name, 2095 fsaclnv, CRED()); 2096 } 2097 } 2098 2099 if (error == 0) 2100 error = dsl_deleg_set(zc->zc_name, fsaclnv, zc->zc_perm_action); 2101 2102 nvlist_free(fsaclnv); 2103 return (error); 2104 } 2105 2106 /* 2107 * inputs: 2108 * zc_name name of filesystem 2109 * 2110 * outputs: 2111 * zc_nvlist_src{_size} nvlist of delegated permissions 2112 */ 2113 static int 2114 zfs_ioc_get_fsacl(zfs_cmd_t *zc) 2115 { 2116 nvlist_t *nvp; 2117 int error; 2118 2119 if ((error = dsl_deleg_get(zc->zc_name, &nvp)) == 0) { 2120 error = put_nvlist(zc, nvp); 2121 nvlist_free(nvp); 2122 } 2123 2124 return (error); 2125 } 2126 2127 /* 2128 * Search the vfs list for a specified resource. Returns a pointer to it 2129 * or NULL if no suitable entry is found. The caller of this routine 2130 * is responsible for releasing the returned vfs pointer. 2131 */ 2132 static vfs_t * 2133 zfs_get_vfs(const char *resource) 2134 { 2135 struct vfs *vfsp; 2136 struct vfs *vfs_found = NULL; 2137 2138 vfs_list_read_lock(); 2139 vfsp = rootvfs; 2140 do { 2141 if (strcmp(refstr_value(vfsp->vfs_resource), resource) == 0) { 2142 VFS_HOLD(vfsp); 2143 vfs_found = vfsp; 2144 break; 2145 } 2146 vfsp = vfsp->vfs_next; 2147 } while (vfsp != rootvfs); 2148 vfs_list_unlock(); 2149 return (vfs_found); 2150 } 2151 2152 /* ARGSUSED */ 2153 static void 2154 zfs_create_cb(objset_t *os, void *arg, cred_t *cr, dmu_tx_t *tx) 2155 { 2156 zfs_creat_t *zct = arg; 2157 2158 zfs_create_fs(os, cr, zct->zct_zplprops, tx); 2159 } 2160 2161 #define ZFS_PROP_UNDEFINED ((uint64_t)-1) 2162 2163 /* 2164 * inputs: 2165 * createprops list of properties requested by creator 2166 * default_zplver zpl version to use if unspecified in createprops 2167 * fuids_ok fuids allowed in this version of the spa? 2168 * os parent objset pointer (NULL if root fs) 2169 * 2170 * outputs: 2171 * zplprops values for the zplprops we attach to the master node object 2172 * is_ci true if requested file system will be purely case-insensitive 2173 * 2174 * Determine the settings for utf8only, normalization and 2175 * casesensitivity. Specific values may have been requested by the 2176 * creator and/or we can inherit values from the parent dataset. If 2177 * the file system is of too early a vintage, a creator can not 2178 * request settings for these properties, even if the requested 2179 * setting is the default value. We don't actually want to create dsl 2180 * properties for these, so remove them from the source nvlist after 2181 * processing. 2182 */ 2183 static int 2184 zfs_fill_zplprops_impl(objset_t *os, uint64_t zplver, 2185 boolean_t fuids_ok, nvlist_t *createprops, nvlist_t *zplprops, 2186 boolean_t *is_ci) 2187 { 2188 uint64_t sense = ZFS_PROP_UNDEFINED; 2189 uint64_t norm = ZFS_PROP_UNDEFINED; 2190 uint64_t u8 = ZFS_PROP_UNDEFINED; 2191 2192 ASSERT(zplprops != NULL); 2193 2194 /* 2195 * Pull out creator prop choices, if any. 2196 */ 2197 if (createprops) { 2198 (void) nvlist_lookup_uint64(createprops, 2199 zfs_prop_to_name(ZFS_PROP_VERSION), &zplver); 2200 (void) nvlist_lookup_uint64(createprops, 2201 zfs_prop_to_name(ZFS_PROP_NORMALIZE), &norm); 2202 (void) nvlist_remove_all(createprops, 2203 zfs_prop_to_name(ZFS_PROP_NORMALIZE)); 2204 (void) nvlist_lookup_uint64(createprops, 2205 zfs_prop_to_name(ZFS_PROP_UTF8ONLY), &u8); 2206 (void) nvlist_remove_all(createprops, 2207 zfs_prop_to_name(ZFS_PROP_UTF8ONLY)); 2208 (void) nvlist_lookup_uint64(createprops, 2209 zfs_prop_to_name(ZFS_PROP_CASE), &sense); 2210 (void) nvlist_remove_all(createprops, 2211 zfs_prop_to_name(ZFS_PROP_CASE)); 2212 } 2213 2214 /* 2215 * If the zpl version requested is whacky or the file system 2216 * or pool is version is too "young" to support normalization 2217 * and the creator tried to set a value for one of the props, 2218 * error out. 2219 */ 2220 if ((zplver < ZPL_VERSION_INITIAL || zplver > ZPL_VERSION) || 2221 (zplver >= ZPL_VERSION_FUID && !fuids_ok) || 2222 (zplver < ZPL_VERSION_NORMALIZATION && 2223 (norm != ZFS_PROP_UNDEFINED || u8 != ZFS_PROP_UNDEFINED || 2224 sense != ZFS_PROP_UNDEFINED))) 2225 return (ENOTSUP); 2226 2227 /* 2228 * Put the version in the zplprops 2229 */ 2230 VERIFY(nvlist_add_uint64(zplprops, 2231 zfs_prop_to_name(ZFS_PROP_VERSION), zplver) == 0); 2232 2233 if (norm == ZFS_PROP_UNDEFINED) 2234 VERIFY(zfs_get_zplprop(os, ZFS_PROP_NORMALIZE, &norm) == 0); 2235 VERIFY(nvlist_add_uint64(zplprops, 2236 zfs_prop_to_name(ZFS_PROP_NORMALIZE), norm) == 0); 2237 2238 /* 2239 * If we're normalizing, names must always be valid UTF-8 strings. 2240 */ 2241 if (norm) 2242 u8 = 1; 2243 if (u8 == ZFS_PROP_UNDEFINED) 2244 VERIFY(zfs_get_zplprop(os, ZFS_PROP_UTF8ONLY, &u8) == 0); 2245 VERIFY(nvlist_add_uint64(zplprops, 2246 zfs_prop_to_name(ZFS_PROP_UTF8ONLY), u8) == 0); 2247 2248 if (sense == ZFS_PROP_UNDEFINED) 2249 VERIFY(zfs_get_zplprop(os, ZFS_PROP_CASE, &sense) == 0); 2250 VERIFY(nvlist_add_uint64(zplprops, 2251 zfs_prop_to_name(ZFS_PROP_CASE), sense) == 0); 2252 2253 if (is_ci) 2254 *is_ci = (sense == ZFS_CASE_INSENSITIVE); 2255 2256 return (0); 2257 } 2258 2259 static int 2260 zfs_fill_zplprops(const char *dataset, nvlist_t *createprops, 2261 nvlist_t *zplprops, boolean_t *is_ci) 2262 { 2263 boolean_t fuids_ok = B_TRUE; 2264 uint64_t zplver = ZPL_VERSION; 2265 objset_t *os = NULL; 2266 char parentname[MAXNAMELEN]; 2267 char *cp; 2268 int error; 2269 2270 (void) strlcpy(parentname, dataset, sizeof (parentname)); 2271 cp = strrchr(parentname, '/'); 2272 ASSERT(cp != NULL); 2273 cp[0] = '\0'; 2274 2275 if (zfs_earlier_version(dataset, SPA_VERSION_USERSPACE)) 2276 zplver = ZPL_VERSION_USERSPACE - 1; 2277 if (zfs_earlier_version(dataset, SPA_VERSION_FUID)) { 2278 zplver = ZPL_VERSION_FUID - 1; 2279 fuids_ok = B_FALSE; 2280 } 2281 2282 /* 2283 * Open parent object set so we can inherit zplprop values. 2284 */ 2285 if ((error = dmu_objset_hold(parentname, FTAG, &os)) != 0) 2286 return (error); 2287 2288 error = zfs_fill_zplprops_impl(os, zplver, fuids_ok, createprops, 2289 zplprops, is_ci); 2290 dmu_objset_rele(os, FTAG); 2291 return (error); 2292 } 2293 2294 static int 2295 zfs_fill_zplprops_root(uint64_t spa_vers, nvlist_t *createprops, 2296 nvlist_t *zplprops, boolean_t *is_ci) 2297 { 2298 boolean_t fuids_ok = B_TRUE; 2299 uint64_t zplver = ZPL_VERSION; 2300 int error; 2301 2302 if (spa_vers < SPA_VERSION_FUID) { 2303 zplver = ZPL_VERSION_FUID - 1; 2304 fuids_ok = B_FALSE; 2305 } 2306 2307 error = zfs_fill_zplprops_impl(NULL, zplver, fuids_ok, createprops, 2308 zplprops, is_ci); 2309 return (error); 2310 } 2311 2312 /* 2313 * inputs: 2314 * zc_objset_type type of objset to create (fs vs zvol) 2315 * zc_name name of new objset 2316 * zc_value name of snapshot to clone from (may be empty) 2317 * zc_nvlist_src{_size} nvlist of properties to apply 2318 * 2319 * outputs: none 2320 */ 2321 static int 2322 zfs_ioc_create(zfs_cmd_t *zc) 2323 { 2324 objset_t *clone; 2325 int error = 0; 2326 zfs_creat_t zct; 2327 nvlist_t *nvprops = NULL; 2328 void (*cbfunc)(objset_t *os, void *arg, cred_t *cr, dmu_tx_t *tx); 2329 dmu_objset_type_t type = zc->zc_objset_type; 2330 2331 switch (type) { 2332 2333 case DMU_OST_ZFS: 2334 cbfunc = zfs_create_cb; 2335 break; 2336 2337 case DMU_OST_ZVOL: 2338 cbfunc = zvol_create_cb; 2339 break; 2340 2341 default: 2342 cbfunc = NULL; 2343 break; 2344 } 2345 if (strchr(zc->zc_name, '@') || 2346 strchr(zc->zc_name, '%')) 2347 return (EINVAL); 2348 2349 if (zc->zc_nvlist_src != NULL && 2350 (error = get_nvlist(zc->zc_nvlist_src, zc->zc_nvlist_src_size, 2351 zc->zc_iflags, &nvprops)) != 0) 2352 return (error); 2353 2354 zct.zct_zplprops = NULL; 2355 zct.zct_props = nvprops; 2356 2357 if (zc->zc_value[0] != '\0') { 2358 /* 2359 * We're creating a clone of an existing snapshot. 2360 */ 2361 zc->zc_value[sizeof (zc->zc_value) - 1] = '\0'; 2362 if (dataset_namecheck(zc->zc_value, NULL, NULL) != 0) { 2363 nvlist_free(nvprops); 2364 return (EINVAL); 2365 } 2366 2367 error = dmu_objset_hold(zc->zc_value, FTAG, &clone); 2368 if (error) { 2369 nvlist_free(nvprops); 2370 return (error); 2371 } 2372 2373 error = dmu_objset_clone(zc->zc_name, dmu_objset_ds(clone), 0); 2374 dmu_objset_rele(clone, FTAG); 2375 if (error) { 2376 nvlist_free(nvprops); 2377 return (error); 2378 } 2379 } else { 2380 boolean_t is_insensitive = B_FALSE; 2381 2382 if (cbfunc == NULL) { 2383 nvlist_free(nvprops); 2384 return (EINVAL); 2385 } 2386 2387 if (type == DMU_OST_ZVOL) { 2388 uint64_t volsize, volblocksize; 2389 2390 if (nvprops == NULL || 2391 nvlist_lookup_uint64(nvprops, 2392 zfs_prop_to_name(ZFS_PROP_VOLSIZE), 2393 &volsize) != 0) { 2394 nvlist_free(nvprops); 2395 return (EINVAL); 2396 } 2397 2398 if ((error = nvlist_lookup_uint64(nvprops, 2399 zfs_prop_to_name(ZFS_PROP_VOLBLOCKSIZE), 2400 &volblocksize)) != 0 && error != ENOENT) { 2401 nvlist_free(nvprops); 2402 return (EINVAL); 2403 } 2404 2405 if (error != 0) 2406 volblocksize = zfs_prop_default_numeric( 2407 ZFS_PROP_VOLBLOCKSIZE); 2408 2409 if ((error = zvol_check_volblocksize( 2410 volblocksize)) != 0 || 2411 (error = zvol_check_volsize(volsize, 2412 volblocksize)) != 0) { 2413 nvlist_free(nvprops); 2414 return (error); 2415 } 2416 } else if (type == DMU_OST_ZFS) { 2417 int error; 2418 2419 /* 2420 * We have to have normalization and 2421 * case-folding flags correct when we do the 2422 * file system creation, so go figure them out 2423 * now. 2424 */ 2425 VERIFY(nvlist_alloc(&zct.zct_zplprops, 2426 NV_UNIQUE_NAME, KM_SLEEP) == 0); 2427 error = zfs_fill_zplprops(zc->zc_name, nvprops, 2428 zct.zct_zplprops, &is_insensitive); 2429 if (error != 0) { 2430 nvlist_free(nvprops); 2431 nvlist_free(zct.zct_zplprops); 2432 return (error); 2433 } 2434 } 2435 error = dmu_objset_create(zc->zc_name, type, 2436 is_insensitive ? DS_FLAG_CI_DATASET : 0, cbfunc, &zct); 2437 nvlist_free(zct.zct_zplprops); 2438 } 2439 2440 /* 2441 * It would be nice to do this atomically. 2442 */ 2443 if (error == 0) { 2444 if ((error = zfs_set_prop_nvlist(zc->zc_name, nvprops)) != 0) 2445 (void) dmu_objset_destroy(zc->zc_name, B_FALSE); 2446 } 2447 nvlist_free(nvprops); 2448 return (error); 2449 } 2450 2451 /* 2452 * inputs: 2453 * zc_name name of filesystem 2454 * zc_value short name of snapshot 2455 * zc_cookie recursive flag 2456 * zc_nvlist_src[_size] property list 2457 * 2458 * outputs: 2459 * zc_value short snapname (i.e. part after the '@') 2460 */ 2461 static int 2462 zfs_ioc_snapshot(zfs_cmd_t *zc) 2463 { 2464 nvlist_t *nvprops = NULL; 2465 int error; 2466 boolean_t recursive = zc->zc_cookie; 2467 2468 if (snapshot_namecheck(zc->zc_value, NULL, NULL) != 0) 2469 return (EINVAL); 2470 2471 if (zc->zc_nvlist_src != NULL && 2472 (error = get_nvlist(zc->zc_nvlist_src, zc->zc_nvlist_src_size, 2473 zc->zc_iflags, &nvprops)) != 0) 2474 return (error); 2475 2476 error = zfs_check_userprops(zc->zc_name, nvprops); 2477 if (error) 2478 goto out; 2479 2480 if (nvprops != NULL && nvlist_next_nvpair(nvprops, NULL) != NULL && 2481 zfs_earlier_version(zc->zc_name, SPA_VERSION_SNAP_PROPS)) { 2482 error = ENOTSUP; 2483 goto out; 2484 } 2485 2486 error = dmu_objset_snapshot(zc->zc_name, zc->zc_value, 2487 nvprops, recursive); 2488 2489 out: 2490 nvlist_free(nvprops); 2491 return (error); 2492 } 2493 2494 int 2495 zfs_unmount_snap(char *name, void *arg) 2496 { 2497 vfs_t *vfsp = NULL; 2498 2499 if (arg) { 2500 char *snapname = arg; 2501 int len = strlen(name) + strlen(snapname) + 2; 2502 char *buf = kmem_alloc(len, KM_SLEEP); 2503 2504 (void) strcpy(buf, name); 2505 (void) strcat(buf, "@"); 2506 (void) strcat(buf, snapname); 2507 vfsp = zfs_get_vfs(buf); 2508 kmem_free(buf, len); 2509 } else if (strchr(name, '@')) { 2510 vfsp = zfs_get_vfs(name); 2511 } 2512 2513 if (vfsp) { 2514 /* 2515 * Always force the unmount for snapshots. 2516 */ 2517 int flag = MS_FORCE; 2518 int err; 2519 2520 if ((err = vn_vfswlock(vfsp->vfs_vnodecovered)) != 0) { 2521 VFS_RELE(vfsp); 2522 return (err); 2523 } 2524 VFS_RELE(vfsp); 2525 if ((err = dounmount(vfsp, flag, kcred)) != 0) 2526 return (err); 2527 } 2528 return (0); 2529 } 2530 2531 /* 2532 * inputs: 2533 * zc_name name of filesystem 2534 * zc_value short name of snapshot 2535 * zc_defer_destroy mark for deferred destroy 2536 * 2537 * outputs: none 2538 */ 2539 static int 2540 zfs_ioc_destroy_snaps(zfs_cmd_t *zc) 2541 { 2542 int err; 2543 2544 if (snapshot_namecheck(zc->zc_value, NULL, NULL) != 0) 2545 return (EINVAL); 2546 err = dmu_objset_find(zc->zc_name, 2547 zfs_unmount_snap, zc->zc_value, DS_FIND_CHILDREN); 2548 if (err) 2549 return (err); 2550 return (dmu_snapshots_destroy(zc->zc_name, zc->zc_value, 2551 zc->zc_defer_destroy)); 2552 } 2553 2554 /* 2555 * inputs: 2556 * zc_name name of dataset to destroy 2557 * zc_objset_type type of objset 2558 * zc_defer_destroy mark for deferred destroy 2559 * 2560 * outputs: none 2561 */ 2562 static int 2563 zfs_ioc_destroy(zfs_cmd_t *zc) 2564 { 2565 int err; 2566 if (strchr(zc->zc_name, '@') && zc->zc_objset_type == DMU_OST_ZFS) { 2567 err = zfs_unmount_snap(zc->zc_name, NULL); 2568 if (err) 2569 return (err); 2570 } 2571 2572 err = dmu_objset_destroy(zc->zc_name, zc->zc_defer_destroy); 2573 if (zc->zc_objset_type == DMU_OST_ZVOL && err == 0) 2574 (void) zvol_remove_minor(zc->zc_name); 2575 return (err); 2576 } 2577 2578 /* 2579 * inputs: 2580 * zc_name name of dataset to rollback (to most recent snapshot) 2581 * 2582 * outputs: none 2583 */ 2584 static int 2585 zfs_ioc_rollback(zfs_cmd_t *zc) 2586 { 2587 dsl_dataset_t *ds, *clone; 2588 int error; 2589 zfsvfs_t *zfsvfs; 2590 char *clone_name; 2591 2592 error = dsl_dataset_hold(zc->zc_name, FTAG, &ds); 2593 if (error) 2594 return (error); 2595 2596 /* must not be a snapshot */ 2597 if (dsl_dataset_is_snapshot(ds)) { 2598 dsl_dataset_rele(ds, FTAG); 2599 return (EINVAL); 2600 } 2601 2602 /* must have a most recent snapshot */ 2603 if (ds->ds_phys->ds_prev_snap_txg < TXG_INITIAL) { 2604 dsl_dataset_rele(ds, FTAG); 2605 return (EINVAL); 2606 } 2607 2608 /* 2609 * Create clone of most recent snapshot. 2610 */ 2611 clone_name = kmem_asprintf("%s/%%rollback", zc->zc_name); 2612 error = dmu_objset_clone(clone_name, ds->ds_prev, DS_FLAG_INCONSISTENT); 2613 if (error) 2614 goto out; 2615 2616 error = dsl_dataset_own(clone_name, B_TRUE, FTAG, &clone); 2617 if (error) 2618 goto out; 2619 2620 /* 2621 * Do clone swap. 2622 */ 2623 if (getzfsvfs(zc->zc_name, &zfsvfs) == 0) { 2624 error = zfs_suspend_fs(zfsvfs); 2625 if (error == 0) { 2626 int resume_err; 2627 2628 if (dsl_dataset_tryown(ds, B_FALSE, FTAG)) { 2629 error = dsl_dataset_clone_swap(clone, ds, 2630 B_TRUE); 2631 dsl_dataset_disown(ds, FTAG); 2632 ds = NULL; 2633 } else { 2634 error = EBUSY; 2635 } 2636 resume_err = zfs_resume_fs(zfsvfs, zc->zc_name); 2637 error = error ? error : resume_err; 2638 } 2639 VFS_RELE(zfsvfs->z_vfs); 2640 } else { 2641 if (dsl_dataset_tryown(ds, B_FALSE, FTAG)) { 2642 error = dsl_dataset_clone_swap(clone, ds, B_TRUE); 2643 dsl_dataset_disown(ds, FTAG); 2644 ds = NULL; 2645 } else { 2646 error = EBUSY; 2647 } 2648 } 2649 2650 /* 2651 * Destroy clone (which also closes it). 2652 */ 2653 (void) dsl_dataset_destroy(clone, FTAG, B_FALSE); 2654 2655 out: 2656 strfree(clone_name); 2657 if (ds) 2658 dsl_dataset_rele(ds, FTAG); 2659 return (error); 2660 } 2661 2662 /* 2663 * inputs: 2664 * zc_name old name of dataset 2665 * zc_value new name of dataset 2666 * zc_cookie recursive flag (only valid for snapshots) 2667 * 2668 * outputs: none 2669 */ 2670 static int 2671 zfs_ioc_rename(zfs_cmd_t *zc) 2672 { 2673 boolean_t recursive = zc->zc_cookie & 1; 2674 2675 zc->zc_value[sizeof (zc->zc_value) - 1] = '\0'; 2676 if (dataset_namecheck(zc->zc_value, NULL, NULL) != 0 || 2677 strchr(zc->zc_value, '%')) 2678 return (EINVAL); 2679 2680 /* 2681 * Unmount snapshot unless we're doing a recursive rename, 2682 * in which case the dataset code figures out which snapshots 2683 * to unmount. 2684 */ 2685 if (!recursive && strchr(zc->zc_name, '@') != NULL && 2686 zc->zc_objset_type == DMU_OST_ZFS) { 2687 int err = zfs_unmount_snap(zc->zc_name, NULL); 2688 if (err) 2689 return (err); 2690 } 2691 if (zc->zc_objset_type == DMU_OST_ZVOL) 2692 (void) zvol_remove_minor(zc->zc_name); 2693 return (dmu_objset_rename(zc->zc_name, zc->zc_value, recursive)); 2694 } 2695 2696 static void 2697 clear_props(char *dataset, nvlist_t *props, nvlist_t *newprops) 2698 { 2699 zfs_cmd_t *zc; 2700 nvpair_t *prop; 2701 2702 if (props == NULL) 2703 return; 2704 zc = kmem_alloc(sizeof (zfs_cmd_t), KM_SLEEP); 2705 (void) strcpy(zc->zc_name, dataset); 2706 for (prop = nvlist_next_nvpair(props, NULL); prop; 2707 prop = nvlist_next_nvpair(props, prop)) { 2708 if (newprops != NULL && 2709 nvlist_exists(newprops, nvpair_name(prop))) 2710 continue; 2711 (void) strcpy(zc->zc_value, nvpair_name(prop)); 2712 if (zfs_secpolicy_inherit(zc, CRED()) == 0) 2713 (void) zfs_ioc_inherit_prop(zc); 2714 } 2715 kmem_free(zc, sizeof (zfs_cmd_t)); 2716 } 2717 2718 /* 2719 * inputs: 2720 * zc_name name of containing filesystem 2721 * zc_nvlist_src{_size} nvlist of properties to apply 2722 * zc_value name of snapshot to create 2723 * zc_string name of clone origin (if DRR_FLAG_CLONE) 2724 * zc_cookie file descriptor to recv from 2725 * zc_begin_record the BEGIN record of the stream (not byteswapped) 2726 * zc_guid force flag 2727 * 2728 * outputs: 2729 * zc_cookie number of bytes read 2730 */ 2731 static int 2732 zfs_ioc_recv(zfs_cmd_t *zc) 2733 { 2734 file_t *fp; 2735 objset_t *os; 2736 dmu_recv_cookie_t drc; 2737 boolean_t force = (boolean_t)zc->zc_guid; 2738 int error, fd; 2739 offset_t off; 2740 nvlist_t *props = NULL; 2741 nvlist_t *origprops = NULL; 2742 objset_t *origin = NULL; 2743 char *tosnap; 2744 char tofs[ZFS_MAXNAMELEN]; 2745 2746 if (dataset_namecheck(zc->zc_value, NULL, NULL) != 0 || 2747 strchr(zc->zc_value, '@') == NULL || 2748 strchr(zc->zc_value, '%')) 2749 return (EINVAL); 2750 2751 (void) strcpy(tofs, zc->zc_value); 2752 tosnap = strchr(tofs, '@'); 2753 *tosnap = '\0'; 2754 tosnap++; 2755 2756 if (zc->zc_nvlist_src != NULL && 2757 (error = get_nvlist(zc->zc_nvlist_src, zc->zc_nvlist_src_size, 2758 zc->zc_iflags, &props)) != 0) 2759 return (error); 2760 2761 fd = zc->zc_cookie; 2762 fp = getf(fd); 2763 if (fp == NULL) { 2764 nvlist_free(props); 2765 return (EBADF); 2766 } 2767 2768 if (props && dmu_objset_hold(tofs, FTAG, &os) == 0) { 2769 /* 2770 * If new properties are supplied, they are to completely 2771 * replace the existing ones, so stash away the existing ones. 2772 */ 2773 (void) dsl_prop_get_all(os, &origprops, B_TRUE); 2774 2775 dmu_objset_rele(os, FTAG); 2776 } 2777 2778 if (zc->zc_string[0]) { 2779 error = dmu_objset_hold(zc->zc_string, FTAG, &origin); 2780 if (error) 2781 goto out; 2782 } 2783 2784 error = dmu_recv_begin(tofs, tosnap, &zc->zc_begin_record, 2785 force, origin, &drc); 2786 if (origin) 2787 dmu_objset_rele(origin, FTAG); 2788 if (error) 2789 goto out; 2790 2791 /* 2792 * Reset properties. We do this before we receive the stream 2793 * so that the properties are applied to the new data. 2794 */ 2795 if (props) { 2796 clear_props(tofs, origprops, props); 2797 /* 2798 * XXX - Note, this is all-or-nothing; should be best-effort. 2799 */ 2800 (void) zfs_set_prop_nvlist(tofs, props); 2801 } 2802 2803 off = fp->f_offset; 2804 error = dmu_recv_stream(&drc, fp->f_vnode, &off); 2805 2806 if (error == 0) { 2807 zfsvfs_t *zfsvfs = NULL; 2808 2809 if (getzfsvfs(tofs, &zfsvfs) == 0) { 2810 /* online recv */ 2811 int end_err; 2812 2813 error = zfs_suspend_fs(zfsvfs); 2814 /* 2815 * If the suspend fails, then the recv_end will 2816 * likely also fail, and clean up after itself. 2817 */ 2818 end_err = dmu_recv_end(&drc); 2819 if (error == 0) { 2820 int resume_err = 2821 zfs_resume_fs(zfsvfs, tofs); 2822 error = error ? error : resume_err; 2823 } 2824 error = error ? error : end_err; 2825 VFS_RELE(zfsvfs->z_vfs); 2826 } else { 2827 error = dmu_recv_end(&drc); 2828 } 2829 } 2830 2831 zc->zc_cookie = off - fp->f_offset; 2832 if (VOP_SEEK(fp->f_vnode, fp->f_offset, &off, NULL) == 0) 2833 fp->f_offset = off; 2834 2835 /* 2836 * On error, restore the original props. 2837 */ 2838 if (error && props) { 2839 clear_props(tofs, props, NULL); 2840 (void) zfs_set_prop_nvlist(tofs, origprops); 2841 } 2842 out: 2843 nvlist_free(props); 2844 nvlist_free(origprops); 2845 releasef(fd); 2846 return (error); 2847 } 2848 2849 /* 2850 * inputs: 2851 * zc_name name of snapshot to send 2852 * zc_value short name of incremental fromsnap (may be empty) 2853 * zc_cookie file descriptor to send stream to 2854 * zc_obj fromorigin flag (mutually exclusive with zc_value) 2855 * 2856 * outputs: none 2857 */ 2858 static int 2859 zfs_ioc_send(zfs_cmd_t *zc) 2860 { 2861 objset_t *fromsnap = NULL; 2862 objset_t *tosnap; 2863 file_t *fp; 2864 int error; 2865 offset_t off; 2866 2867 error = dmu_objset_hold(zc->zc_name, FTAG, &tosnap); 2868 if (error) 2869 return (error); 2870 2871 if (zc->zc_value[0] != '\0') { 2872 char *buf; 2873 char *cp; 2874 2875 buf = kmem_alloc(MAXPATHLEN, KM_SLEEP); 2876 (void) strncpy(buf, zc->zc_name, MAXPATHLEN); 2877 cp = strchr(buf, '@'); 2878 if (cp) 2879 *(cp+1) = 0; 2880 (void) strncat(buf, zc->zc_value, MAXPATHLEN); 2881 error = dmu_objset_hold(buf, FTAG, &fromsnap); 2882 kmem_free(buf, MAXPATHLEN); 2883 if (error) { 2884 dmu_objset_rele(tosnap, FTAG); 2885 return (error); 2886 } 2887 } 2888 2889 fp = getf(zc->zc_cookie); 2890 if (fp == NULL) { 2891 dmu_objset_rele(tosnap, FTAG); 2892 if (fromsnap) 2893 dmu_objset_rele(fromsnap, FTAG); 2894 return (EBADF); 2895 } 2896 2897 off = fp->f_offset; 2898 error = dmu_sendbackup(tosnap, fromsnap, zc->zc_obj, fp->f_vnode, &off); 2899 2900 if (VOP_SEEK(fp->f_vnode, fp->f_offset, &off, NULL) == 0) 2901 fp->f_offset = off; 2902 releasef(zc->zc_cookie); 2903 if (fromsnap) 2904 dmu_objset_rele(fromsnap, FTAG); 2905 dmu_objset_rele(tosnap, FTAG); 2906 return (error); 2907 } 2908 2909 static int 2910 zfs_ioc_inject_fault(zfs_cmd_t *zc) 2911 { 2912 int id, error; 2913 2914 error = zio_inject_fault(zc->zc_name, (int)zc->zc_guid, &id, 2915 &zc->zc_inject_record); 2916 2917 if (error == 0) 2918 zc->zc_guid = (uint64_t)id; 2919 2920 return (error); 2921 } 2922 2923 static int 2924 zfs_ioc_clear_fault(zfs_cmd_t *zc) 2925 { 2926 return (zio_clear_fault((int)zc->zc_guid)); 2927 } 2928 2929 static int 2930 zfs_ioc_inject_list_next(zfs_cmd_t *zc) 2931 { 2932 int id = (int)zc->zc_guid; 2933 int error; 2934 2935 error = zio_inject_list_next(&id, zc->zc_name, sizeof (zc->zc_name), 2936 &zc->zc_inject_record); 2937 2938 zc->zc_guid = id; 2939 2940 return (error); 2941 } 2942 2943 static int 2944 zfs_ioc_error_log(zfs_cmd_t *zc) 2945 { 2946 spa_t *spa; 2947 int error; 2948 size_t count = (size_t)zc->zc_nvlist_dst_size; 2949 2950 if ((error = spa_open(zc->zc_name, &spa, FTAG)) != 0) 2951 return (error); 2952 2953 error = spa_get_errlog(spa, (void *)(uintptr_t)zc->zc_nvlist_dst, 2954 &count); 2955 if (error == 0) 2956 zc->zc_nvlist_dst_size = count; 2957 else 2958 zc->zc_nvlist_dst_size = spa_get_errlog_size(spa); 2959 2960 spa_close(spa, FTAG); 2961 2962 return (error); 2963 } 2964 2965 static int 2966 zfs_ioc_clear(zfs_cmd_t *zc) 2967 { 2968 spa_t *spa; 2969 vdev_t *vd; 2970 int error; 2971 2972 /* 2973 * On zpool clear we also fix up missing slogs 2974 */ 2975 mutex_enter(&spa_namespace_lock); 2976 spa = spa_lookup(zc->zc_name); 2977 if (spa == NULL) { 2978 mutex_exit(&spa_namespace_lock); 2979 return (EIO); 2980 } 2981 if (spa->spa_log_state == SPA_LOG_MISSING) { 2982 /* we need to let spa_open/spa_load clear the chains */ 2983 spa->spa_log_state = SPA_LOG_CLEAR; 2984 } 2985 spa->spa_last_open_failed = 0; 2986 mutex_exit(&spa_namespace_lock); 2987 2988 if (zc->zc_cookie == ZPOOL_NO_REWIND) { 2989 error = spa_open(zc->zc_name, &spa, FTAG); 2990 } else { 2991 nvlist_t *policy; 2992 nvlist_t *config = NULL; 2993 2994 if (zc->zc_nvlist_src == NULL) 2995 return (EINVAL); 2996 2997 if ((error = get_nvlist(zc->zc_nvlist_src, 2998 zc->zc_nvlist_src_size, zc->zc_iflags, &policy)) == 0) { 2999 error = spa_open_rewind(zc->zc_name, &spa, FTAG, 3000 policy, &config); 3001 if (config != NULL) { 3002 (void) put_nvlist(zc, config); 3003 nvlist_free(config); 3004 } 3005 nvlist_free(policy); 3006 } 3007 } 3008 3009 if (error) 3010 return (error); 3011 3012 spa_vdev_state_enter(spa, SCL_NONE); 3013 3014 if (zc->zc_guid == 0) { 3015 vd = NULL; 3016 } else { 3017 vd = spa_lookup_by_guid(spa, zc->zc_guid, B_TRUE); 3018 if (vd == NULL) { 3019 (void) spa_vdev_state_exit(spa, NULL, ENODEV); 3020 spa_close(spa, FTAG); 3021 return (ENODEV); 3022 } 3023 } 3024 3025 vdev_clear(spa, vd); 3026 3027 (void) spa_vdev_state_exit(spa, NULL, 0); 3028 3029 /* 3030 * Resume any suspended I/Os. 3031 */ 3032 if (zio_resume(spa) != 0) 3033 error = EIO; 3034 3035 spa_close(spa, FTAG); 3036 3037 return (error); 3038 } 3039 3040 /* 3041 * inputs: 3042 * zc_name name of filesystem 3043 * zc_value name of origin snapshot 3044 * 3045 * outputs: 3046 * zc_string name of conflicting snapshot, if there is one 3047 */ 3048 static int 3049 zfs_ioc_promote(zfs_cmd_t *zc) 3050 { 3051 char *cp; 3052 3053 /* 3054 * We don't need to unmount *all* the origin fs's snapshots, but 3055 * it's easier. 3056 */ 3057 cp = strchr(zc->zc_value, '@'); 3058 if (cp) 3059 *cp = '\0'; 3060 (void) dmu_objset_find(zc->zc_value, 3061 zfs_unmount_snap, NULL, DS_FIND_SNAPSHOTS); 3062 return (dsl_dataset_promote(zc->zc_name, zc->zc_string)); 3063 } 3064 3065 /* 3066 * Retrieve a single {user|group}{used|quota}@... property. 3067 * 3068 * inputs: 3069 * zc_name name of filesystem 3070 * zc_objset_type zfs_userquota_prop_t 3071 * zc_value domain name (eg. "S-1-234-567-89") 3072 * zc_guid RID/UID/GID 3073 * 3074 * outputs: 3075 * zc_cookie property value 3076 */ 3077 static int 3078 zfs_ioc_userspace_one(zfs_cmd_t *zc) 3079 { 3080 zfsvfs_t *zfsvfs; 3081 int error; 3082 3083 if (zc->zc_objset_type >= ZFS_NUM_USERQUOTA_PROPS) 3084 return (EINVAL); 3085 3086 error = zfsvfs_hold(zc->zc_name, FTAG, &zfsvfs); 3087 if (error) 3088 return (error); 3089 3090 error = zfs_userspace_one(zfsvfs, 3091 zc->zc_objset_type, zc->zc_value, zc->zc_guid, &zc->zc_cookie); 3092 zfsvfs_rele(zfsvfs, FTAG); 3093 3094 return (error); 3095 } 3096 3097 /* 3098 * inputs: 3099 * zc_name name of filesystem 3100 * zc_cookie zap cursor 3101 * zc_objset_type zfs_userquota_prop_t 3102 * zc_nvlist_dst[_size] buffer to fill (not really an nvlist) 3103 * 3104 * outputs: 3105 * zc_nvlist_dst[_size] data buffer (array of zfs_useracct_t) 3106 * zc_cookie zap cursor 3107 */ 3108 static int 3109 zfs_ioc_userspace_many(zfs_cmd_t *zc) 3110 { 3111 zfsvfs_t *zfsvfs; 3112 int error; 3113 3114 error = zfsvfs_hold(zc->zc_name, FTAG, &zfsvfs); 3115 if (error) 3116 return (error); 3117 3118 int bufsize = zc->zc_nvlist_dst_size; 3119 void *buf = kmem_alloc(bufsize, KM_SLEEP); 3120 3121 error = zfs_userspace_many(zfsvfs, zc->zc_objset_type, &zc->zc_cookie, 3122 buf, &zc->zc_nvlist_dst_size); 3123 3124 if (error == 0) { 3125 error = xcopyout(buf, 3126 (void *)(uintptr_t)zc->zc_nvlist_dst, 3127 zc->zc_nvlist_dst_size); 3128 } 3129 kmem_free(buf, bufsize); 3130 zfsvfs_rele(zfsvfs, FTAG); 3131 3132 return (error); 3133 } 3134 3135 /* 3136 * inputs: 3137 * zc_name name of filesystem 3138 * 3139 * outputs: 3140 * none 3141 */ 3142 static int 3143 zfs_ioc_userspace_upgrade(zfs_cmd_t *zc) 3144 { 3145 objset_t *os; 3146 int error; 3147 zfsvfs_t *zfsvfs; 3148 3149 if (getzfsvfs(zc->zc_name, &zfsvfs) == 0) { 3150 if (!dmu_objset_userused_enabled(zfsvfs->z_os)) { 3151 /* 3152 * If userused is not enabled, it may be because the 3153 * objset needs to be closed & reopened (to grow the 3154 * objset_phys_t). Suspend/resume the fs will do that. 3155 */ 3156 error = zfs_suspend_fs(zfsvfs); 3157 if (error == 0) 3158 error = zfs_resume_fs(zfsvfs, zc->zc_name); 3159 } 3160 if (error == 0) 3161 error = dmu_objset_userspace_upgrade(zfsvfs->z_os); 3162 VFS_RELE(zfsvfs->z_vfs); 3163 } else { 3164 /* XXX kind of reading contents without owning */ 3165 error = dmu_objset_hold(zc->zc_name, FTAG, &os); 3166 if (error) 3167 return (error); 3168 3169 error = dmu_objset_userspace_upgrade(os); 3170 dmu_objset_rele(os, FTAG); 3171 } 3172 3173 return (error); 3174 } 3175 3176 /* 3177 * We don't want to have a hard dependency 3178 * against some special symbols in sharefs 3179 * nfs, and smbsrv. Determine them if needed when 3180 * the first file system is shared. 3181 * Neither sharefs, nfs or smbsrv are unloadable modules. 3182 */ 3183 int (*znfsexport_fs)(void *arg); 3184 int (*zshare_fs)(enum sharefs_sys_op, share_t *, uint32_t); 3185 int (*zsmbexport_fs)(void *arg, boolean_t add_share); 3186 3187 int zfs_nfsshare_inited; 3188 int zfs_smbshare_inited; 3189 3190 ddi_modhandle_t nfs_mod; 3191 ddi_modhandle_t sharefs_mod; 3192 ddi_modhandle_t smbsrv_mod; 3193 kmutex_t zfs_share_lock; 3194 3195 static int 3196 zfs_init_sharefs() 3197 { 3198 int error; 3199 3200 ASSERT(MUTEX_HELD(&zfs_share_lock)); 3201 /* Both NFS and SMB shares also require sharetab support. */ 3202 if (sharefs_mod == NULL && ((sharefs_mod = 3203 ddi_modopen("fs/sharefs", 3204 KRTLD_MODE_FIRST, &error)) == NULL)) { 3205 return (ENOSYS); 3206 } 3207 if (zshare_fs == NULL && ((zshare_fs = 3208 (int (*)(enum sharefs_sys_op, share_t *, uint32_t)) 3209 ddi_modsym(sharefs_mod, "sharefs_impl", &error)) == NULL)) { 3210 return (ENOSYS); 3211 } 3212 return (0); 3213 } 3214 3215 static int 3216 zfs_ioc_share(zfs_cmd_t *zc) 3217 { 3218 int error; 3219 int opcode; 3220 3221 switch (zc->zc_share.z_sharetype) { 3222 case ZFS_SHARE_NFS: 3223 case ZFS_UNSHARE_NFS: 3224 if (zfs_nfsshare_inited == 0) { 3225 mutex_enter(&zfs_share_lock); 3226 if (nfs_mod == NULL && ((nfs_mod = ddi_modopen("fs/nfs", 3227 KRTLD_MODE_FIRST, &error)) == NULL)) { 3228 mutex_exit(&zfs_share_lock); 3229 return (ENOSYS); 3230 } 3231 if (znfsexport_fs == NULL && 3232 ((znfsexport_fs = (int (*)(void *)) 3233 ddi_modsym(nfs_mod, 3234 "nfs_export", &error)) == NULL)) { 3235 mutex_exit(&zfs_share_lock); 3236 return (ENOSYS); 3237 } 3238 error = zfs_init_sharefs(); 3239 if (error) { 3240 mutex_exit(&zfs_share_lock); 3241 return (ENOSYS); 3242 } 3243 zfs_nfsshare_inited = 1; 3244 mutex_exit(&zfs_share_lock); 3245 } 3246 break; 3247 case ZFS_SHARE_SMB: 3248 case ZFS_UNSHARE_SMB: 3249 if (zfs_smbshare_inited == 0) { 3250 mutex_enter(&zfs_share_lock); 3251 if (smbsrv_mod == NULL && ((smbsrv_mod = 3252 ddi_modopen("drv/smbsrv", 3253 KRTLD_MODE_FIRST, &error)) == NULL)) { 3254 mutex_exit(&zfs_share_lock); 3255 return (ENOSYS); 3256 } 3257 if (zsmbexport_fs == NULL && ((zsmbexport_fs = 3258 (int (*)(void *, boolean_t))ddi_modsym(smbsrv_mod, 3259 "smb_server_share", &error)) == NULL)) { 3260 mutex_exit(&zfs_share_lock); 3261 return (ENOSYS); 3262 } 3263 error = zfs_init_sharefs(); 3264 if (error) { 3265 mutex_exit(&zfs_share_lock); 3266 return (ENOSYS); 3267 } 3268 zfs_smbshare_inited = 1; 3269 mutex_exit(&zfs_share_lock); 3270 } 3271 break; 3272 default: 3273 return (EINVAL); 3274 } 3275 3276 switch (zc->zc_share.z_sharetype) { 3277 case ZFS_SHARE_NFS: 3278 case ZFS_UNSHARE_NFS: 3279 if (error = 3280 znfsexport_fs((void *) 3281 (uintptr_t)zc->zc_share.z_exportdata)) 3282 return (error); 3283 break; 3284 case ZFS_SHARE_SMB: 3285 case ZFS_UNSHARE_SMB: 3286 if (error = zsmbexport_fs((void *) 3287 (uintptr_t)zc->zc_share.z_exportdata, 3288 zc->zc_share.z_sharetype == ZFS_SHARE_SMB ? 3289 B_TRUE: B_FALSE)) { 3290 return (error); 3291 } 3292 break; 3293 } 3294 3295 opcode = (zc->zc_share.z_sharetype == ZFS_SHARE_NFS || 3296 zc->zc_share.z_sharetype == ZFS_SHARE_SMB) ? 3297 SHAREFS_ADD : SHAREFS_REMOVE; 3298 3299 /* 3300 * Add or remove share from sharetab 3301 */ 3302 error = zshare_fs(opcode, 3303 (void *)(uintptr_t)zc->zc_share.z_sharedata, 3304 zc->zc_share.z_sharemax); 3305 3306 return (error); 3307 3308 } 3309 3310 ace_t full_access[] = { 3311 {(uid_t)-1, ACE_ALL_PERMS, ACE_EVERYONE, 0} 3312 }; 3313 3314 /* 3315 * Remove all ACL files in shares dir 3316 */ 3317 static int 3318 zfs_smb_acl_purge(znode_t *dzp) 3319 { 3320 zap_cursor_t zc; 3321 zap_attribute_t zap; 3322 zfsvfs_t *zfsvfs = dzp->z_zfsvfs; 3323 int error; 3324 3325 for (zap_cursor_init(&zc, zfsvfs->z_os, dzp->z_id); 3326 (error = zap_cursor_retrieve(&zc, &zap)) == 0; 3327 zap_cursor_advance(&zc)) { 3328 if ((error = VOP_REMOVE(ZTOV(dzp), zap.za_name, kcred, 3329 NULL, 0)) != 0) 3330 break; 3331 } 3332 zap_cursor_fini(&zc); 3333 return (error); 3334 } 3335 3336 static int 3337 zfs_ioc_smb_acl(zfs_cmd_t *zc) 3338 { 3339 vnode_t *vp; 3340 znode_t *dzp; 3341 vnode_t *resourcevp = NULL; 3342 znode_t *sharedir; 3343 zfsvfs_t *zfsvfs; 3344 nvlist_t *nvlist; 3345 char *src, *target; 3346 vattr_t vattr; 3347 vsecattr_t vsec; 3348 int error = 0; 3349 3350 if ((error = lookupname(zc->zc_value, UIO_SYSSPACE, 3351 NO_FOLLOW, NULL, &vp)) != 0) 3352 return (error); 3353 3354 /* Now make sure mntpnt and dataset are ZFS */ 3355 3356 if (vp->v_vfsp->vfs_fstype != zfsfstype || 3357 (strcmp((char *)refstr_value(vp->v_vfsp->vfs_resource), 3358 zc->zc_name) != 0)) { 3359 VN_RELE(vp); 3360 return (EINVAL); 3361 } 3362 3363 dzp = VTOZ(vp); 3364 zfsvfs = dzp->z_zfsvfs; 3365 ZFS_ENTER(zfsvfs); 3366 3367 /* 3368 * Create share dir if its missing. 3369 */ 3370 mutex_enter(&zfsvfs->z_lock); 3371 if (zfsvfs->z_shares_dir == 0) { 3372 dmu_tx_t *tx; 3373 3374 tx = dmu_tx_create(zfsvfs->z_os); 3375 dmu_tx_hold_zap(tx, MASTER_NODE_OBJ, TRUE, 3376 ZFS_SHARES_DIR); 3377 dmu_tx_hold_zap(tx, DMU_NEW_OBJECT, FALSE, NULL); 3378 error = dmu_tx_assign(tx, TXG_WAIT); 3379 if (error) { 3380 dmu_tx_abort(tx); 3381 } else { 3382 error = zfs_create_share_dir(zfsvfs, tx); 3383 dmu_tx_commit(tx); 3384 } 3385 if (error) { 3386 mutex_exit(&zfsvfs->z_lock); 3387 VN_RELE(vp); 3388 ZFS_EXIT(zfsvfs); 3389 return (error); 3390 } 3391 } 3392 mutex_exit(&zfsvfs->z_lock); 3393 3394 ASSERT(zfsvfs->z_shares_dir); 3395 if ((error = zfs_zget(zfsvfs, zfsvfs->z_shares_dir, &sharedir)) != 0) { 3396 VN_RELE(vp); 3397 ZFS_EXIT(zfsvfs); 3398 return (error); 3399 } 3400 3401 switch (zc->zc_cookie) { 3402 case ZFS_SMB_ACL_ADD: 3403 vattr.va_mask = AT_MODE|AT_UID|AT_GID|AT_TYPE; 3404 vattr.va_type = VREG; 3405 vattr.va_mode = S_IFREG|0777; 3406 vattr.va_uid = 0; 3407 vattr.va_gid = 0; 3408 3409 vsec.vsa_mask = VSA_ACE; 3410 vsec.vsa_aclentp = &full_access; 3411 vsec.vsa_aclentsz = sizeof (full_access); 3412 vsec.vsa_aclcnt = 1; 3413 3414 error = VOP_CREATE(ZTOV(sharedir), zc->zc_string, 3415 &vattr, EXCL, 0, &resourcevp, kcred, 0, NULL, &vsec); 3416 if (resourcevp) 3417 VN_RELE(resourcevp); 3418 break; 3419 3420 case ZFS_SMB_ACL_REMOVE: 3421 error = VOP_REMOVE(ZTOV(sharedir), zc->zc_string, kcred, 3422 NULL, 0); 3423 break; 3424 3425 case ZFS_SMB_ACL_RENAME: 3426 if ((error = get_nvlist(zc->zc_nvlist_src, 3427 zc->zc_nvlist_src_size, zc->zc_iflags, &nvlist)) != 0) { 3428 VN_RELE(vp); 3429 ZFS_EXIT(zfsvfs); 3430 return (error); 3431 } 3432 if (nvlist_lookup_string(nvlist, ZFS_SMB_ACL_SRC, &src) || 3433 nvlist_lookup_string(nvlist, ZFS_SMB_ACL_TARGET, 3434 &target)) { 3435 VN_RELE(vp); 3436 VN_RELE(ZTOV(sharedir)); 3437 ZFS_EXIT(zfsvfs); 3438 return (error); 3439 } 3440 error = VOP_RENAME(ZTOV(sharedir), src, ZTOV(sharedir), target, 3441 kcred, NULL, 0); 3442 nvlist_free(nvlist); 3443 break; 3444 3445 case ZFS_SMB_ACL_PURGE: 3446 error = zfs_smb_acl_purge(sharedir); 3447 break; 3448 3449 default: 3450 error = EINVAL; 3451 break; 3452 } 3453 3454 VN_RELE(vp); 3455 VN_RELE(ZTOV(sharedir)); 3456 3457 ZFS_EXIT(zfsvfs); 3458 3459 return (error); 3460 } 3461 3462 /* 3463 * inputs: 3464 * zc_name name of filesystem 3465 * zc_value short name of snap 3466 * zc_string user-supplied tag for this reference 3467 * zc_cookie recursive flag 3468 * zc_temphold set if hold is temporary 3469 * 3470 * outputs: none 3471 */ 3472 static int 3473 zfs_ioc_hold(zfs_cmd_t *zc) 3474 { 3475 boolean_t recursive = zc->zc_cookie; 3476 3477 if (snapshot_namecheck(zc->zc_value, NULL, NULL) != 0) 3478 return (EINVAL); 3479 3480 return (dsl_dataset_user_hold(zc->zc_name, zc->zc_value, 3481 zc->zc_string, recursive, zc->zc_temphold)); 3482 } 3483 3484 /* 3485 * inputs: 3486 * zc_name name of dataset from which we're releasing a user reference 3487 * zc_value short name of snap 3488 * zc_string user-supplied tag for this reference 3489 * zc_cookie recursive flag 3490 * 3491 * outputs: none 3492 */ 3493 static int 3494 zfs_ioc_release(zfs_cmd_t *zc) 3495 { 3496 boolean_t recursive = zc->zc_cookie; 3497 3498 if (snapshot_namecheck(zc->zc_value, NULL, NULL) != 0) 3499 return (EINVAL); 3500 3501 return (dsl_dataset_user_release(zc->zc_name, zc->zc_value, 3502 zc->zc_string, recursive)); 3503 } 3504 3505 /* 3506 * inputs: 3507 * zc_name name of filesystem 3508 * 3509 * outputs: 3510 * zc_nvlist_src{_size} nvlist of snapshot holds 3511 */ 3512 static int 3513 zfs_ioc_get_holds(zfs_cmd_t *zc) 3514 { 3515 nvlist_t *nvp; 3516 int error; 3517 3518 if ((error = dsl_dataset_get_holds(zc->zc_name, &nvp)) == 0) { 3519 error = put_nvlist(zc, nvp); 3520 nvlist_free(nvp); 3521 } 3522 3523 return (error); 3524 } 3525 3526 /* 3527 * pool create, destroy, and export don't log the history as part of 3528 * zfsdev_ioctl, but rather zfs_ioc_pool_create, and zfs_ioc_pool_export 3529 * do the logging of those commands. 3530 */ 3531 static zfs_ioc_vec_t zfs_ioc_vec[] = { 3532 { zfs_ioc_pool_create, zfs_secpolicy_config, POOL_NAME, B_FALSE, 3533 B_FALSE }, 3534 { zfs_ioc_pool_destroy, zfs_secpolicy_config, POOL_NAME, B_FALSE, 3535 B_FALSE }, 3536 { zfs_ioc_pool_import, zfs_secpolicy_config, POOL_NAME, B_TRUE, 3537 B_FALSE }, 3538 { zfs_ioc_pool_export, zfs_secpolicy_config, POOL_NAME, B_FALSE, 3539 B_FALSE }, 3540 { zfs_ioc_pool_configs, zfs_secpolicy_none, NO_NAME, B_FALSE, 3541 B_FALSE }, 3542 { zfs_ioc_pool_stats, zfs_secpolicy_read, POOL_NAME, B_FALSE, 3543 B_FALSE }, 3544 { zfs_ioc_pool_tryimport, zfs_secpolicy_config, NO_NAME, B_FALSE, 3545 B_FALSE }, 3546 { zfs_ioc_pool_scrub, zfs_secpolicy_config, POOL_NAME, B_TRUE, 3547 B_TRUE }, 3548 { zfs_ioc_pool_freeze, zfs_secpolicy_config, NO_NAME, B_FALSE, 3549 B_FALSE }, 3550 { zfs_ioc_pool_upgrade, zfs_secpolicy_config, POOL_NAME, B_TRUE, 3551 B_TRUE }, 3552 { zfs_ioc_pool_get_history, zfs_secpolicy_config, POOL_NAME, B_FALSE, 3553 B_FALSE }, 3554 { zfs_ioc_vdev_add, zfs_secpolicy_config, POOL_NAME, B_TRUE, 3555 B_TRUE }, 3556 { zfs_ioc_vdev_remove, zfs_secpolicy_config, POOL_NAME, B_TRUE, 3557 B_TRUE }, 3558 { zfs_ioc_vdev_set_state, zfs_secpolicy_config, POOL_NAME, B_TRUE, 3559 B_FALSE }, 3560 { zfs_ioc_vdev_attach, zfs_secpolicy_config, POOL_NAME, B_TRUE, 3561 B_TRUE }, 3562 { zfs_ioc_vdev_detach, zfs_secpolicy_config, POOL_NAME, B_TRUE, 3563 B_TRUE }, 3564 { zfs_ioc_vdev_setpath, zfs_secpolicy_config, POOL_NAME, B_FALSE, 3565 B_TRUE }, 3566 { zfs_ioc_vdev_setfru, zfs_secpolicy_config, POOL_NAME, B_FALSE, 3567 B_TRUE }, 3568 { zfs_ioc_objset_stats, zfs_secpolicy_read, DATASET_NAME, B_FALSE, 3569 B_FALSE }, 3570 { zfs_ioc_objset_zplprops, zfs_secpolicy_read, DATASET_NAME, B_FALSE, 3571 B_FALSE }, 3572 { zfs_ioc_dataset_list_next, zfs_secpolicy_read, DATASET_NAME, B_FALSE, 3573 B_FALSE }, 3574 { zfs_ioc_snapshot_list_next, zfs_secpolicy_read, DATASET_NAME, B_FALSE, 3575 B_FALSE }, 3576 { zfs_ioc_set_prop, zfs_secpolicy_none, DATASET_NAME, B_TRUE, B_TRUE }, 3577 { zfs_ioc_create, zfs_secpolicy_create, DATASET_NAME, B_TRUE, B_TRUE }, 3578 { zfs_ioc_destroy, zfs_secpolicy_destroy, DATASET_NAME, B_TRUE, 3579 B_TRUE}, 3580 { zfs_ioc_rollback, zfs_secpolicy_rollback, DATASET_NAME, B_TRUE, 3581 B_TRUE }, 3582 { zfs_ioc_rename, zfs_secpolicy_rename, DATASET_NAME, B_TRUE, B_TRUE }, 3583 { zfs_ioc_recv, zfs_secpolicy_receive, DATASET_NAME, B_TRUE, B_TRUE }, 3584 { zfs_ioc_send, zfs_secpolicy_send, DATASET_NAME, B_TRUE, B_FALSE }, 3585 { zfs_ioc_inject_fault, zfs_secpolicy_inject, NO_NAME, B_FALSE, 3586 B_FALSE }, 3587 { zfs_ioc_clear_fault, zfs_secpolicy_inject, NO_NAME, B_FALSE, 3588 B_FALSE }, 3589 { zfs_ioc_inject_list_next, zfs_secpolicy_inject, NO_NAME, B_FALSE, 3590 B_FALSE }, 3591 { zfs_ioc_error_log, zfs_secpolicy_inject, POOL_NAME, B_FALSE, 3592 B_FALSE }, 3593 { zfs_ioc_clear, zfs_secpolicy_config, POOL_NAME, B_TRUE, B_FALSE }, 3594 { zfs_ioc_promote, zfs_secpolicy_promote, DATASET_NAME, B_TRUE, 3595 B_TRUE }, 3596 { zfs_ioc_destroy_snaps, zfs_secpolicy_destroy, DATASET_NAME, B_TRUE, 3597 B_TRUE }, 3598 { zfs_ioc_snapshot, zfs_secpolicy_snapshot, DATASET_NAME, B_TRUE, 3599 B_TRUE }, 3600 { zfs_ioc_dsobj_to_dsname, zfs_secpolicy_config, POOL_NAME, B_FALSE, 3601 B_FALSE }, 3602 { zfs_ioc_obj_to_path, zfs_secpolicy_config, DATASET_NAME, B_FALSE, 3603 B_TRUE }, 3604 { zfs_ioc_pool_set_props, zfs_secpolicy_config, POOL_NAME, B_TRUE, 3605 B_TRUE }, 3606 { zfs_ioc_pool_get_props, zfs_secpolicy_read, POOL_NAME, B_FALSE, 3607 B_FALSE }, 3608 { zfs_ioc_set_fsacl, zfs_secpolicy_fsacl, DATASET_NAME, B_TRUE, 3609 B_TRUE }, 3610 { zfs_ioc_get_fsacl, zfs_secpolicy_read, DATASET_NAME, B_FALSE, 3611 B_FALSE }, 3612 { zfs_ioc_iscsi_perm_check, zfs_secpolicy_iscsi, DATASET_NAME, B_FALSE, 3613 B_FALSE }, 3614 { zfs_ioc_share, zfs_secpolicy_share, DATASET_NAME, B_FALSE, B_FALSE }, 3615 { zfs_ioc_inherit_prop, zfs_secpolicy_inherit, DATASET_NAME, B_TRUE, 3616 B_TRUE }, 3617 { zfs_ioc_smb_acl, zfs_secpolicy_smb_acl, DATASET_NAME, B_FALSE, 3618 B_FALSE }, 3619 { zfs_ioc_userspace_one, zfs_secpolicy_userspace_one, 3620 DATASET_NAME, B_FALSE, B_FALSE }, 3621 { zfs_ioc_userspace_many, zfs_secpolicy_userspace_many, 3622 DATASET_NAME, B_FALSE, B_FALSE }, 3623 { zfs_ioc_userspace_upgrade, zfs_secpolicy_userspace_upgrade, 3624 DATASET_NAME, B_FALSE, B_TRUE }, 3625 { zfs_ioc_hold, zfs_secpolicy_hold, DATASET_NAME, B_TRUE, B_TRUE }, 3626 { zfs_ioc_release, zfs_secpolicy_release, DATASET_NAME, B_TRUE, 3627 B_TRUE }, 3628 { zfs_ioc_get_holds, zfs_secpolicy_read, DATASET_NAME, B_FALSE, 3629 B_TRUE } 3630 }; 3631 3632 int 3633 pool_status_check(const char *name, zfs_ioc_namecheck_t type) 3634 { 3635 spa_t *spa; 3636 int error; 3637 3638 ASSERT(type == POOL_NAME || type == DATASET_NAME); 3639 3640 error = spa_open(name, &spa, FTAG); 3641 if (error == 0) { 3642 if (spa_suspended(spa)) 3643 error = EAGAIN; 3644 spa_close(spa, FTAG); 3645 } 3646 return (error); 3647 } 3648 3649 static int 3650 zfsdev_ioctl(dev_t dev, int cmd, intptr_t arg, int flag, cred_t *cr, int *rvalp) 3651 { 3652 zfs_cmd_t *zc; 3653 uint_t vec; 3654 int error, rc; 3655 3656 if (getminor(dev) != 0) 3657 return (zvol_ioctl(dev, cmd, arg, flag, cr, rvalp)); 3658 3659 vec = cmd - ZFS_IOC; 3660 ASSERT3U(getmajor(dev), ==, ddi_driver_major(zfs_dip)); 3661 3662 if (vec >= sizeof (zfs_ioc_vec) / sizeof (zfs_ioc_vec[0])) 3663 return (EINVAL); 3664 3665 zc = kmem_zalloc(sizeof (zfs_cmd_t), KM_SLEEP); 3666 3667 error = ddi_copyin((void *)arg, zc, sizeof (zfs_cmd_t), flag); 3668 3669 if ((error == 0) && !(flag & FKIOCTL)) 3670 error = zfs_ioc_vec[vec].zvec_secpolicy(zc, cr); 3671 3672 /* 3673 * Ensure that all pool/dataset names are valid before we pass down to 3674 * the lower layers. 3675 */ 3676 if (error == 0) { 3677 zc->zc_name[sizeof (zc->zc_name) - 1] = '\0'; 3678 zc->zc_iflags = flag & FKIOCTL; 3679 switch (zfs_ioc_vec[vec].zvec_namecheck) { 3680 case POOL_NAME: 3681 if (pool_namecheck(zc->zc_name, NULL, NULL) != 0) 3682 error = EINVAL; 3683 if (zfs_ioc_vec[vec].zvec_pool_check) 3684 error = pool_status_check(zc->zc_name, 3685 zfs_ioc_vec[vec].zvec_namecheck); 3686 break; 3687 3688 case DATASET_NAME: 3689 if (dataset_namecheck(zc->zc_name, NULL, NULL) != 0) 3690 error = EINVAL; 3691 if (zfs_ioc_vec[vec].zvec_pool_check) 3692 error = pool_status_check(zc->zc_name, 3693 zfs_ioc_vec[vec].zvec_namecheck); 3694 break; 3695 3696 case NO_NAME: 3697 break; 3698 } 3699 } 3700 3701 if (error == 0) 3702 error = zfs_ioc_vec[vec].zvec_func(zc); 3703 3704 rc = ddi_copyout(zc, (void *)arg, sizeof (zfs_cmd_t), flag); 3705 if (error == 0) { 3706 error = rc; 3707 if (zfs_ioc_vec[vec].zvec_his_log) 3708 zfs_log_history(zc); 3709 } 3710 3711 kmem_free(zc, sizeof (zfs_cmd_t)); 3712 return (error); 3713 } 3714 3715 static int 3716 zfs_attach(dev_info_t *dip, ddi_attach_cmd_t cmd) 3717 { 3718 if (cmd != DDI_ATTACH) 3719 return (DDI_FAILURE); 3720 3721 if (ddi_create_minor_node(dip, "zfs", S_IFCHR, 0, 3722 DDI_PSEUDO, 0) == DDI_FAILURE) 3723 return (DDI_FAILURE); 3724 3725 zfs_dip = dip; 3726 3727 ddi_report_dev(dip); 3728 3729 return (DDI_SUCCESS); 3730 } 3731 3732 static int 3733 zfs_detach(dev_info_t *dip, ddi_detach_cmd_t cmd) 3734 { 3735 if (spa_busy() || zfs_busy() || zvol_busy()) 3736 return (DDI_FAILURE); 3737 3738 if (cmd != DDI_DETACH) 3739 return (DDI_FAILURE); 3740 3741 zfs_dip = NULL; 3742 3743 ddi_prop_remove_all(dip); 3744 ddi_remove_minor_node(dip, NULL); 3745 3746 return (DDI_SUCCESS); 3747 } 3748 3749 /*ARGSUSED*/ 3750 static int 3751 zfs_info(dev_info_t *dip, ddi_info_cmd_t infocmd, void *arg, void **result) 3752 { 3753 switch (infocmd) { 3754 case DDI_INFO_DEVT2DEVINFO: 3755 *result = zfs_dip; 3756 return (DDI_SUCCESS); 3757 3758 case DDI_INFO_DEVT2INSTANCE: 3759 *result = (void *)0; 3760 return (DDI_SUCCESS); 3761 } 3762 3763 return (DDI_FAILURE); 3764 } 3765 3766 /* 3767 * OK, so this is a little weird. 3768 * 3769 * /dev/zfs is the control node, i.e. minor 0. 3770 * /dev/zvol/[r]dsk/pool/dataset are the zvols, minor > 0. 3771 * 3772 * /dev/zfs has basically nothing to do except serve up ioctls, 3773 * so most of the standard driver entry points are in zvol.c. 3774 */ 3775 static struct cb_ops zfs_cb_ops = { 3776 zvol_open, /* open */ 3777 zvol_close, /* close */ 3778 zvol_strategy, /* strategy */ 3779 nodev, /* print */ 3780 zvol_dump, /* dump */ 3781 zvol_read, /* read */ 3782 zvol_write, /* write */ 3783 zfsdev_ioctl, /* ioctl */ 3784 nodev, /* devmap */ 3785 nodev, /* mmap */ 3786 nodev, /* segmap */ 3787 nochpoll, /* poll */ 3788 ddi_prop_op, /* prop_op */ 3789 NULL, /* streamtab */ 3790 D_NEW | D_MP | D_64BIT, /* Driver compatibility flag */ 3791 CB_REV, /* version */ 3792 nodev, /* async read */ 3793 nodev, /* async write */ 3794 }; 3795 3796 static struct dev_ops zfs_dev_ops = { 3797 DEVO_REV, /* version */ 3798 0, /* refcnt */ 3799 zfs_info, /* info */ 3800 nulldev, /* identify */ 3801 nulldev, /* probe */ 3802 zfs_attach, /* attach */ 3803 zfs_detach, /* detach */ 3804 nodev, /* reset */ 3805 &zfs_cb_ops, /* driver operations */ 3806 NULL, /* no bus operations */ 3807 NULL, /* power */ 3808 ddi_quiesce_not_needed, /* quiesce */ 3809 }; 3810 3811 static struct modldrv zfs_modldrv = { 3812 &mod_driverops, 3813 "ZFS storage pool", 3814 &zfs_dev_ops 3815 }; 3816 3817 static struct modlinkage modlinkage = { 3818 MODREV_1, 3819 (void *)&zfs_modlfs, 3820 (void *)&zfs_modldrv, 3821 NULL 3822 }; 3823 3824 3825 uint_t zfs_fsyncer_key; 3826 extern uint_t rrw_tsd_key; 3827 3828 int 3829 _init(void) 3830 { 3831 int error; 3832 3833 spa_init(FREAD | FWRITE); 3834 zfs_init(); 3835 zvol_init(); 3836 3837 if ((error = mod_install(&modlinkage)) != 0) { 3838 zvol_fini(); 3839 zfs_fini(); 3840 spa_fini(); 3841 return (error); 3842 } 3843 3844 tsd_create(&zfs_fsyncer_key, NULL); 3845 tsd_create(&rrw_tsd_key, NULL); 3846 3847 error = ldi_ident_from_mod(&modlinkage, &zfs_li); 3848 ASSERT(error == 0); 3849 mutex_init(&zfs_share_lock, NULL, MUTEX_DEFAULT, NULL); 3850 3851 return (0); 3852 } 3853 3854 int 3855 _fini(void) 3856 { 3857 int error; 3858 3859 if (spa_busy() || zfs_busy() || zvol_busy() || zio_injection_enabled) 3860 return (EBUSY); 3861 3862 if ((error = mod_remove(&modlinkage)) != 0) 3863 return (error); 3864 3865 zvol_fini(); 3866 zfs_fini(); 3867 spa_fini(); 3868 if (zfs_nfsshare_inited) 3869 (void) ddi_modclose(nfs_mod); 3870 if (zfs_smbshare_inited) 3871 (void) ddi_modclose(smbsrv_mod); 3872 if (zfs_nfsshare_inited || zfs_smbshare_inited) 3873 (void) ddi_modclose(sharefs_mod); 3874 3875 tsd_destroy(&zfs_fsyncer_key); 3876 ldi_ident_release(zfs_li); 3877 zfs_li = NULL; 3878 mutex_destroy(&zfs_share_lock); 3879 3880 return (error); 3881 } 3882 3883 int 3884 _info(struct modinfo *modinfop) 3885 { 3886 return (mod_info(&modlinkage, modinfop)); 3887 } 3888