libzfs_dataset.c revision 263889
1/* 2 * CDDL HEADER START 3 * 4 * The contents of this file are subject to the terms of the 5 * Common Development and Distribution License (the "License"). 6 * You may not use this file except in compliance with the License. 7 * 8 * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE 9 * or http://www.opensolaris.org/os/licensing. 10 * See the License for the specific language governing permissions 11 * and limitations under the License. 12 * 13 * When distributing Covered Code, include this CDDL HEADER in each 14 * file and include the License file at usr/src/OPENSOLARIS.LICENSE. 15 * If applicable, add the following below this CDDL HEADER, with the 16 * fields enclosed by brackets "[]" replaced with your own identifying 17 * information: Portions Copyright [yyyy] [name of copyright owner] 18 * 19 * CDDL HEADER END 20 */ 21 22/* 23 * Copyright (c) 2005, 2010, Oracle and/or its affiliates. All rights reserved. 24 * Copyright (c) 2013 by Delphix. All rights reserved. 25 * Copyright (c) 2012 DEY Storage Systems, Inc. All rights reserved. 26 * Copyright (c) 2011-2012 Pawel Jakub Dawidek <pawel@dawidek.net>. 27 * All rights reserved. 28 * Copyright (c) 2012 Martin Matuska <mm@FreeBSD.org>. All rights reserved. 29 * Copyright (c) 2013 Steven Hartland. All rights reserved. 30 * Copyright 2013 Nexenta Systems, Inc. All rights reserved. 31 */ 32 33#include <ctype.h> 34#include <errno.h> 35#include <libintl.h> 36#include <math.h> 37#include <stdio.h> 38#include <stdlib.h> 39#include <strings.h> 40#include <unistd.h> 41#include <stddef.h> 42#include <zone.h> 43#include <fcntl.h> 44#include <sys/mntent.h> 45#include <sys/mount.h> 46#include <priv.h> 47#include <pwd.h> 48#include <grp.h> 49#include <stddef.h> 50#include <idmap.h> 51 52#include <sys/dnode.h> 53#include <sys/spa.h> 54#include <sys/zap.h> 55#include <sys/misc.h> 56#include <libzfs.h> 57 58#include "zfs_namecheck.h" 59#include "zfs_prop.h" 60#include "libzfs_impl.h" 61#include "zfs_deleg.h" 62 63static int userquota_propname_decode(const char *propname, boolean_t zoned, 64 zfs_userquota_prop_t *typep, char *domain, int domainlen, uint64_t *ridp); 65 66/* 67 * Given a single type (not a mask of types), return the type in a human 68 * readable form. 69 */ 70const char * 71zfs_type_to_name(zfs_type_t type) 72{ 73 switch (type) { 74 case ZFS_TYPE_FILESYSTEM: 75 return (dgettext(TEXT_DOMAIN, "filesystem")); 76 case ZFS_TYPE_SNAPSHOT: 77 return (dgettext(TEXT_DOMAIN, "snapshot")); 78 case ZFS_TYPE_VOLUME: 79 return (dgettext(TEXT_DOMAIN, "volume")); 80 } 81 82 return (NULL); 83} 84 85/* 86 * Given a path and mask of ZFS types, return a string describing this dataset. 87 * This is used when we fail to open a dataset and we cannot get an exact type. 88 * We guess what the type would have been based on the path and the mask of 89 * acceptable types. 90 */ 91static const char * 92path_to_str(const char *path, int types) 93{ 94 /* 95 * When given a single type, always report the exact type. 96 */ 97 if (types == ZFS_TYPE_SNAPSHOT) 98 return (dgettext(TEXT_DOMAIN, "snapshot")); 99 if (types == ZFS_TYPE_FILESYSTEM) 100 return (dgettext(TEXT_DOMAIN, "filesystem")); 101 if (types == ZFS_TYPE_VOLUME) 102 return (dgettext(TEXT_DOMAIN, "volume")); 103 104 /* 105 * The user is requesting more than one type of dataset. If this is the 106 * case, consult the path itself. If we're looking for a snapshot, and 107 * a '@' is found, then report it as "snapshot". Otherwise, remove the 108 * snapshot attribute and try again. 109 */ 110 if (types & ZFS_TYPE_SNAPSHOT) { 111 if (strchr(path, '@') != NULL) 112 return (dgettext(TEXT_DOMAIN, "snapshot")); 113 return (path_to_str(path, types & ~ZFS_TYPE_SNAPSHOT)); 114 } 115 116 /* 117 * The user has requested either filesystems or volumes. 118 * We have no way of knowing a priori what type this would be, so always 119 * report it as "filesystem" or "volume", our two primitive types. 120 */ 121 if (types & ZFS_TYPE_FILESYSTEM) 122 return (dgettext(TEXT_DOMAIN, "filesystem")); 123 124 assert(types & ZFS_TYPE_VOLUME); 125 return (dgettext(TEXT_DOMAIN, "volume")); 126} 127 128/* 129 * Validate a ZFS path. This is used even before trying to open the dataset, to 130 * provide a more meaningful error message. We call zfs_error_aux() to 131 * explain exactly why the name was not valid. 132 */ 133int 134zfs_validate_name(libzfs_handle_t *hdl, const char *path, int type, 135 boolean_t modifying) 136{ 137 namecheck_err_t why; 138 char what; 139 140 (void) zfs_prop_get_table(); 141 if (dataset_namecheck(path, &why, &what) != 0) { 142 if (hdl != NULL) { 143 switch (why) { 144 case NAME_ERR_TOOLONG: 145 zfs_error_aux(hdl, dgettext(TEXT_DOMAIN, 146 "name is too long")); 147 break; 148 149 case NAME_ERR_LEADING_SLASH: 150 zfs_error_aux(hdl, dgettext(TEXT_DOMAIN, 151 "leading slash in name")); 152 break; 153 154 case NAME_ERR_EMPTY_COMPONENT: 155 zfs_error_aux(hdl, dgettext(TEXT_DOMAIN, 156 "empty component in name")); 157 break; 158 159 case NAME_ERR_TRAILING_SLASH: 160 zfs_error_aux(hdl, dgettext(TEXT_DOMAIN, 161 "trailing slash in name")); 162 break; 163 164 case NAME_ERR_INVALCHAR: 165 zfs_error_aux(hdl, 166 dgettext(TEXT_DOMAIN, "invalid character " 167 "'%c' in name"), what); 168 break; 169 170 case NAME_ERR_MULTIPLE_AT: 171 zfs_error_aux(hdl, dgettext(TEXT_DOMAIN, 172 "multiple '@' delimiters in name")); 173 break; 174 175 case NAME_ERR_NOLETTER: 176 zfs_error_aux(hdl, dgettext(TEXT_DOMAIN, 177 "pool doesn't begin with a letter")); 178 break; 179 180 case NAME_ERR_RESERVED: 181 zfs_error_aux(hdl, dgettext(TEXT_DOMAIN, 182 "name is reserved")); 183 break; 184 185 case NAME_ERR_DISKLIKE: 186 zfs_error_aux(hdl, dgettext(TEXT_DOMAIN, 187 "reserved disk name")); 188 break; 189 } 190 } 191 192 return (0); 193 } 194 195 if (!(type & ZFS_TYPE_SNAPSHOT) && strchr(path, '@') != NULL) { 196 if (hdl != NULL) 197 zfs_error_aux(hdl, dgettext(TEXT_DOMAIN, 198 "snapshot delimiter '@' in filesystem name")); 199 return (0); 200 } 201 202 if (type == ZFS_TYPE_SNAPSHOT && strchr(path, '@') == NULL) { 203 if (hdl != NULL) 204 zfs_error_aux(hdl, dgettext(TEXT_DOMAIN, 205 "missing '@' delimiter in snapshot name")); 206 return (0); 207 } 208 209 if (modifying && strchr(path, '%') != NULL) { 210 if (hdl != NULL) 211 zfs_error_aux(hdl, dgettext(TEXT_DOMAIN, 212 "invalid character %c in name"), '%'); 213 return (0); 214 } 215 216 return (-1); 217} 218 219int 220zfs_name_valid(const char *name, zfs_type_t type) 221{ 222 if (type == ZFS_TYPE_POOL) 223 return (zpool_name_valid(NULL, B_FALSE, name)); 224 return (zfs_validate_name(NULL, name, type, B_FALSE)); 225} 226 227/* 228 * This function takes the raw DSL properties, and filters out the user-defined 229 * properties into a separate nvlist. 230 */ 231static nvlist_t * 232process_user_props(zfs_handle_t *zhp, nvlist_t *props) 233{ 234 libzfs_handle_t *hdl = zhp->zfs_hdl; 235 nvpair_t *elem; 236 nvlist_t *propval; 237 nvlist_t *nvl; 238 239 if (nvlist_alloc(&nvl, NV_UNIQUE_NAME, 0) != 0) { 240 (void) no_memory(hdl); 241 return (NULL); 242 } 243 244 elem = NULL; 245 while ((elem = nvlist_next_nvpair(props, elem)) != NULL) { 246 if (!zfs_prop_user(nvpair_name(elem))) 247 continue; 248 249 verify(nvpair_value_nvlist(elem, &propval) == 0); 250 if (nvlist_add_nvlist(nvl, nvpair_name(elem), propval) != 0) { 251 nvlist_free(nvl); 252 (void) no_memory(hdl); 253 return (NULL); 254 } 255 } 256 257 return (nvl); 258} 259 260static zpool_handle_t * 261zpool_add_handle(zfs_handle_t *zhp, const char *pool_name) 262{ 263 libzfs_handle_t *hdl = zhp->zfs_hdl; 264 zpool_handle_t *zph; 265 266 if ((zph = zpool_open_canfail(hdl, pool_name)) != NULL) { 267 if (hdl->libzfs_pool_handles != NULL) 268 zph->zpool_next = hdl->libzfs_pool_handles; 269 hdl->libzfs_pool_handles = zph; 270 } 271 return (zph); 272} 273 274static zpool_handle_t * 275zpool_find_handle(zfs_handle_t *zhp, const char *pool_name, int len) 276{ 277 libzfs_handle_t *hdl = zhp->zfs_hdl; 278 zpool_handle_t *zph = hdl->libzfs_pool_handles; 279 280 while ((zph != NULL) && 281 (strncmp(pool_name, zpool_get_name(zph), len) != 0)) 282 zph = zph->zpool_next; 283 return (zph); 284} 285 286/* 287 * Returns a handle to the pool that contains the provided dataset. 288 * If a handle to that pool already exists then that handle is returned. 289 * Otherwise, a new handle is created and added to the list of handles. 290 */ 291static zpool_handle_t * 292zpool_handle(zfs_handle_t *zhp) 293{ 294 char *pool_name; 295 int len; 296 zpool_handle_t *zph; 297 298 len = strcspn(zhp->zfs_name, "/@#") + 1; 299 pool_name = zfs_alloc(zhp->zfs_hdl, len); 300 (void) strlcpy(pool_name, zhp->zfs_name, len); 301 302 zph = zpool_find_handle(zhp, pool_name, len); 303 if (zph == NULL) 304 zph = zpool_add_handle(zhp, pool_name); 305 306 free(pool_name); 307 return (zph); 308} 309 310void 311zpool_free_handles(libzfs_handle_t *hdl) 312{ 313 zpool_handle_t *next, *zph = hdl->libzfs_pool_handles; 314 315 while (zph != NULL) { 316 next = zph->zpool_next; 317 zpool_close(zph); 318 zph = next; 319 } 320 hdl->libzfs_pool_handles = NULL; 321} 322 323/* 324 * Utility function to gather stats (objset and zpl) for the given object. 325 */ 326static int 327get_stats_ioctl(zfs_handle_t *zhp, zfs_cmd_t *zc) 328{ 329 libzfs_handle_t *hdl = zhp->zfs_hdl; 330 331 (void) strlcpy(zc->zc_name, zhp->zfs_name, sizeof (zc->zc_name)); 332 333 while (ioctl(hdl->libzfs_fd, ZFS_IOC_OBJSET_STATS, zc) != 0) { 334 if (errno == ENOMEM) { 335 if (zcmd_expand_dst_nvlist(hdl, zc) != 0) { 336 return (-1); 337 } 338 } else { 339 return (-1); 340 } 341 } 342 return (0); 343} 344 345/* 346 * Utility function to get the received properties of the given object. 347 */ 348static int 349get_recvd_props_ioctl(zfs_handle_t *zhp) 350{ 351 libzfs_handle_t *hdl = zhp->zfs_hdl; 352 nvlist_t *recvdprops; 353 zfs_cmd_t zc = { 0 }; 354 int err; 355 356 if (zcmd_alloc_dst_nvlist(hdl, &zc, 0) != 0) 357 return (-1); 358 359 (void) strlcpy(zc.zc_name, zhp->zfs_name, sizeof (zc.zc_name)); 360 361 while (ioctl(hdl->libzfs_fd, ZFS_IOC_OBJSET_RECVD_PROPS, &zc) != 0) { 362 if (errno == ENOMEM) { 363 if (zcmd_expand_dst_nvlist(hdl, &zc) != 0) { 364 return (-1); 365 } 366 } else { 367 zcmd_free_nvlists(&zc); 368 return (-1); 369 } 370 } 371 372 err = zcmd_read_dst_nvlist(zhp->zfs_hdl, &zc, &recvdprops); 373 zcmd_free_nvlists(&zc); 374 if (err != 0) 375 return (-1); 376 377 nvlist_free(zhp->zfs_recvd_props); 378 zhp->zfs_recvd_props = recvdprops; 379 380 return (0); 381} 382 383static int 384put_stats_zhdl(zfs_handle_t *zhp, zfs_cmd_t *zc) 385{ 386 nvlist_t *allprops, *userprops; 387 388 zhp->zfs_dmustats = zc->zc_objset_stats; /* structure assignment */ 389 390 if (zcmd_read_dst_nvlist(zhp->zfs_hdl, zc, &allprops) != 0) { 391 return (-1); 392 } 393 394 /* 395 * XXX Why do we store the user props separately, in addition to 396 * storing them in zfs_props? 397 */ 398 if ((userprops = process_user_props(zhp, allprops)) == NULL) { 399 nvlist_free(allprops); 400 return (-1); 401 } 402 403 nvlist_free(zhp->zfs_props); 404 nvlist_free(zhp->zfs_user_props); 405 406 zhp->zfs_props = allprops; 407 zhp->zfs_user_props = userprops; 408 409 return (0); 410} 411 412static int 413get_stats(zfs_handle_t *zhp) 414{ 415 int rc = 0; 416 zfs_cmd_t zc = { 0 }; 417 418 if (zcmd_alloc_dst_nvlist(zhp->zfs_hdl, &zc, 0) != 0) 419 return (-1); 420 if (get_stats_ioctl(zhp, &zc) != 0) 421 rc = -1; 422 else if (put_stats_zhdl(zhp, &zc) != 0) 423 rc = -1; 424 zcmd_free_nvlists(&zc); 425 return (rc); 426} 427 428/* 429 * Refresh the properties currently stored in the handle. 430 */ 431void 432zfs_refresh_properties(zfs_handle_t *zhp) 433{ 434 (void) get_stats(zhp); 435} 436 437/* 438 * Makes a handle from the given dataset name. Used by zfs_open() and 439 * zfs_iter_* to create child handles on the fly. 440 */ 441static int 442make_dataset_handle_common(zfs_handle_t *zhp, zfs_cmd_t *zc) 443{ 444 if (put_stats_zhdl(zhp, zc) != 0) 445 return (-1); 446 447 /* 448 * We've managed to open the dataset and gather statistics. Determine 449 * the high-level type. 450 */ 451 if (zhp->zfs_dmustats.dds_type == DMU_OST_ZVOL) 452 zhp->zfs_head_type = ZFS_TYPE_VOLUME; 453 else if (zhp->zfs_dmustats.dds_type == DMU_OST_ZFS) 454 zhp->zfs_head_type = ZFS_TYPE_FILESYSTEM; 455 else 456 abort(); 457 458 if (zhp->zfs_dmustats.dds_is_snapshot) 459 zhp->zfs_type = ZFS_TYPE_SNAPSHOT; 460 else if (zhp->zfs_dmustats.dds_type == DMU_OST_ZVOL) 461 zhp->zfs_type = ZFS_TYPE_VOLUME; 462 else if (zhp->zfs_dmustats.dds_type == DMU_OST_ZFS) 463 zhp->zfs_type = ZFS_TYPE_FILESYSTEM; 464 else 465 abort(); /* we should never see any other types */ 466 467 if ((zhp->zpool_hdl = zpool_handle(zhp)) == NULL) 468 return (-1); 469 470 return (0); 471} 472 473zfs_handle_t * 474make_dataset_handle(libzfs_handle_t *hdl, const char *path) 475{ 476 zfs_cmd_t zc = { 0 }; 477 478 zfs_handle_t *zhp = calloc(sizeof (zfs_handle_t), 1); 479 480 if (zhp == NULL) 481 return (NULL); 482 483 zhp->zfs_hdl = hdl; 484 (void) strlcpy(zhp->zfs_name, path, sizeof (zhp->zfs_name)); 485 if (zcmd_alloc_dst_nvlist(hdl, &zc, 0) != 0) { 486 free(zhp); 487 return (NULL); 488 } 489 if (get_stats_ioctl(zhp, &zc) == -1) { 490 zcmd_free_nvlists(&zc); 491 free(zhp); 492 return (NULL); 493 } 494 if (make_dataset_handle_common(zhp, &zc) == -1) { 495 free(zhp); 496 zhp = NULL; 497 } 498 zcmd_free_nvlists(&zc); 499 return (zhp); 500} 501 502zfs_handle_t * 503make_dataset_handle_zc(libzfs_handle_t *hdl, zfs_cmd_t *zc) 504{ 505 zfs_handle_t *zhp = calloc(sizeof (zfs_handle_t), 1); 506 507 if (zhp == NULL) 508 return (NULL); 509 510 zhp->zfs_hdl = hdl; 511 (void) strlcpy(zhp->zfs_name, zc->zc_name, sizeof (zhp->zfs_name)); 512 if (make_dataset_handle_common(zhp, zc) == -1) { 513 free(zhp); 514 return (NULL); 515 } 516 return (zhp); 517} 518 519zfs_handle_t * 520make_dataset_simple_handle_zc(zfs_handle_t *pzhp, zfs_cmd_t *zc) 521{ 522 zfs_handle_t *zhp = calloc(sizeof (zfs_handle_t), 1); 523 524 if (zhp == NULL) 525 return (NULL); 526 527 zhp->zfs_hdl = pzhp->zfs_hdl; 528 (void) strlcpy(zhp->zfs_name, zc->zc_name, sizeof (zhp->zfs_name)); 529 zhp->zfs_head_type = pzhp->zfs_type; 530 zhp->zfs_type = ZFS_TYPE_SNAPSHOT; 531 zhp->zpool_hdl = zpool_handle(zhp); 532 return (zhp); 533} 534 535zfs_handle_t * 536zfs_handle_dup(zfs_handle_t *zhp_orig) 537{ 538 zfs_handle_t *zhp = calloc(sizeof (zfs_handle_t), 1); 539 540 if (zhp == NULL) 541 return (NULL); 542 543 zhp->zfs_hdl = zhp_orig->zfs_hdl; 544 zhp->zpool_hdl = zhp_orig->zpool_hdl; 545 (void) strlcpy(zhp->zfs_name, zhp_orig->zfs_name, 546 sizeof (zhp->zfs_name)); 547 zhp->zfs_type = zhp_orig->zfs_type; 548 zhp->zfs_head_type = zhp_orig->zfs_head_type; 549 zhp->zfs_dmustats = zhp_orig->zfs_dmustats; 550 if (zhp_orig->zfs_props != NULL) { 551 if (nvlist_dup(zhp_orig->zfs_props, &zhp->zfs_props, 0) != 0) { 552 (void) no_memory(zhp->zfs_hdl); 553 zfs_close(zhp); 554 return (NULL); 555 } 556 } 557 if (zhp_orig->zfs_user_props != NULL) { 558 if (nvlist_dup(zhp_orig->zfs_user_props, 559 &zhp->zfs_user_props, 0) != 0) { 560 (void) no_memory(zhp->zfs_hdl); 561 zfs_close(zhp); 562 return (NULL); 563 } 564 } 565 if (zhp_orig->zfs_recvd_props != NULL) { 566 if (nvlist_dup(zhp_orig->zfs_recvd_props, 567 &zhp->zfs_recvd_props, 0)) { 568 (void) no_memory(zhp->zfs_hdl); 569 zfs_close(zhp); 570 return (NULL); 571 } 572 } 573 zhp->zfs_mntcheck = zhp_orig->zfs_mntcheck; 574 if (zhp_orig->zfs_mntopts != NULL) { 575 zhp->zfs_mntopts = zfs_strdup(zhp_orig->zfs_hdl, 576 zhp_orig->zfs_mntopts); 577 } 578 zhp->zfs_props_table = zhp_orig->zfs_props_table; 579 return (zhp); 580} 581 582boolean_t 583zfs_bookmark_exists(const char *path) 584{ 585 nvlist_t *bmarks; 586 nvlist_t *props; 587 char fsname[ZFS_MAXNAMELEN]; 588 char *bmark_name; 589 char *pound; 590 int err; 591 boolean_t rv; 592 593 594 (void) strlcpy(fsname, path, sizeof (fsname)); 595 pound = strchr(fsname, '#'); 596 if (pound == NULL) 597 return (B_FALSE); 598 599 *pound = '\0'; 600 bmark_name = pound + 1; 601 props = fnvlist_alloc(); 602 err = lzc_get_bookmarks(fsname, props, &bmarks); 603 nvlist_free(props); 604 if (err != 0) { 605 nvlist_free(bmarks); 606 return (B_FALSE); 607 } 608 609 rv = nvlist_exists(bmarks, bmark_name); 610 nvlist_free(bmarks); 611 return (rv); 612} 613 614zfs_handle_t * 615make_bookmark_handle(zfs_handle_t *parent, const char *path, 616 nvlist_t *bmark_props) 617{ 618 zfs_handle_t *zhp = calloc(sizeof (zfs_handle_t), 1); 619 620 if (zhp == NULL) 621 return (NULL); 622 623 /* Fill in the name. */ 624 zhp->zfs_hdl = parent->zfs_hdl; 625 (void) strlcpy(zhp->zfs_name, path, sizeof (zhp->zfs_name)); 626 627 /* Set the property lists. */ 628 if (nvlist_dup(bmark_props, &zhp->zfs_props, 0) != 0) { 629 free(zhp); 630 return (NULL); 631 } 632 633 /* Set the types. */ 634 zhp->zfs_head_type = parent->zfs_head_type; 635 zhp->zfs_type = ZFS_TYPE_BOOKMARK; 636 637 if ((zhp->zpool_hdl = zpool_handle(zhp)) == NULL) { 638 nvlist_free(zhp->zfs_props); 639 free(zhp); 640 return (NULL); 641 } 642 643 return (zhp); 644} 645 646/* 647 * Opens the given snapshot, filesystem, or volume. The 'types' 648 * argument is a mask of acceptable types. The function will print an 649 * appropriate error message and return NULL if it can't be opened. 650 */ 651zfs_handle_t * 652zfs_open(libzfs_handle_t *hdl, const char *path, int types) 653{ 654 zfs_handle_t *zhp; 655 char errbuf[1024]; 656 657 (void) snprintf(errbuf, sizeof (errbuf), 658 dgettext(TEXT_DOMAIN, "cannot open '%s'"), path); 659 660 /* 661 * Validate the name before we even try to open it. 662 */ 663 if (!zfs_validate_name(hdl, path, ZFS_TYPE_DATASET, B_FALSE)) { 664 zfs_error_aux(hdl, dgettext(TEXT_DOMAIN, 665 "invalid dataset name")); 666 (void) zfs_error(hdl, EZFS_INVALIDNAME, errbuf); 667 return (NULL); 668 } 669 670 /* 671 * Try to get stats for the dataset, which will tell us if it exists. 672 */ 673 errno = 0; 674 if ((zhp = make_dataset_handle(hdl, path)) == NULL) { 675 (void) zfs_standard_error(hdl, errno, errbuf); 676 return (NULL); 677 } 678 679 if (zhp == NULL) { 680 char *at = strchr(path, '@'); 681 682 if (at != NULL) 683 *at = '\0'; 684 errno = 0; 685 if ((zhp = make_dataset_handle(hdl, path)) == NULL) { 686 (void) zfs_standard_error(hdl, errno, errbuf); 687 return (NULL); 688 } 689 if (at != NULL) 690 *at = '@'; 691 (void) strlcpy(zhp->zfs_name, path, sizeof (zhp->zfs_name)); 692 zhp->zfs_type = ZFS_TYPE_SNAPSHOT; 693 } 694 695 if (!(types & zhp->zfs_type)) { 696 (void) zfs_error(hdl, EZFS_BADTYPE, errbuf); 697 zfs_close(zhp); 698 return (NULL); 699 } 700 701 return (zhp); 702} 703 704/* 705 * Release a ZFS handle. Nothing to do but free the associated memory. 706 */ 707void 708zfs_close(zfs_handle_t *zhp) 709{ 710 if (zhp->zfs_mntopts) 711 free(zhp->zfs_mntopts); 712 nvlist_free(zhp->zfs_props); 713 nvlist_free(zhp->zfs_user_props); 714 nvlist_free(zhp->zfs_recvd_props); 715 free(zhp); 716} 717 718typedef struct mnttab_node { 719 struct mnttab mtn_mt; 720 avl_node_t mtn_node; 721} mnttab_node_t; 722 723static int 724libzfs_mnttab_cache_compare(const void *arg1, const void *arg2) 725{ 726 const mnttab_node_t *mtn1 = arg1; 727 const mnttab_node_t *mtn2 = arg2; 728 int rv; 729 730 rv = strcmp(mtn1->mtn_mt.mnt_special, mtn2->mtn_mt.mnt_special); 731 732 if (rv == 0) 733 return (0); 734 return (rv > 0 ? 1 : -1); 735} 736 737void 738libzfs_mnttab_init(libzfs_handle_t *hdl) 739{ 740 assert(avl_numnodes(&hdl->libzfs_mnttab_cache) == 0); 741 avl_create(&hdl->libzfs_mnttab_cache, libzfs_mnttab_cache_compare, 742 sizeof (mnttab_node_t), offsetof(mnttab_node_t, mtn_node)); 743} 744 745void 746libzfs_mnttab_update(libzfs_handle_t *hdl) 747{ 748 struct mnttab entry; 749 750 rewind(hdl->libzfs_mnttab); 751 while (getmntent(hdl->libzfs_mnttab, &entry) == 0) { 752 mnttab_node_t *mtn; 753 754 if (strcmp(entry.mnt_fstype, MNTTYPE_ZFS) != 0) 755 continue; 756 mtn = zfs_alloc(hdl, sizeof (mnttab_node_t)); 757 mtn->mtn_mt.mnt_special = zfs_strdup(hdl, entry.mnt_special); 758 mtn->mtn_mt.mnt_mountp = zfs_strdup(hdl, entry.mnt_mountp); 759 mtn->mtn_mt.mnt_fstype = zfs_strdup(hdl, entry.mnt_fstype); 760 mtn->mtn_mt.mnt_mntopts = zfs_strdup(hdl, entry.mnt_mntopts); 761 avl_add(&hdl->libzfs_mnttab_cache, mtn); 762 } 763} 764 765void 766libzfs_mnttab_fini(libzfs_handle_t *hdl) 767{ 768 void *cookie = NULL; 769 mnttab_node_t *mtn; 770 771 while (mtn = avl_destroy_nodes(&hdl->libzfs_mnttab_cache, &cookie)) { 772 free(mtn->mtn_mt.mnt_special); 773 free(mtn->mtn_mt.mnt_mountp); 774 free(mtn->mtn_mt.mnt_fstype); 775 free(mtn->mtn_mt.mnt_mntopts); 776 free(mtn); 777 } 778 avl_destroy(&hdl->libzfs_mnttab_cache); 779} 780 781void 782libzfs_mnttab_cache(libzfs_handle_t *hdl, boolean_t enable) 783{ 784 hdl->libzfs_mnttab_enable = enable; 785} 786 787int 788libzfs_mnttab_find(libzfs_handle_t *hdl, const char *fsname, 789 struct mnttab *entry) 790{ 791 mnttab_node_t find; 792 mnttab_node_t *mtn; 793 794 if (!hdl->libzfs_mnttab_enable) { 795 struct mnttab srch = { 0 }; 796 797 if (avl_numnodes(&hdl->libzfs_mnttab_cache)) 798 libzfs_mnttab_fini(hdl); 799 rewind(hdl->libzfs_mnttab); 800 srch.mnt_special = (char *)fsname; 801 srch.mnt_fstype = MNTTYPE_ZFS; 802 if (getmntany(hdl->libzfs_mnttab, entry, &srch) == 0) 803 return (0); 804 else 805 return (ENOENT); 806 } 807 808 if (avl_numnodes(&hdl->libzfs_mnttab_cache) == 0) 809 libzfs_mnttab_update(hdl); 810 811 find.mtn_mt.mnt_special = (char *)fsname; 812 mtn = avl_find(&hdl->libzfs_mnttab_cache, &find, NULL); 813 if (mtn) { 814 *entry = mtn->mtn_mt; 815 return (0); 816 } 817 return (ENOENT); 818} 819 820void 821libzfs_mnttab_add(libzfs_handle_t *hdl, const char *special, 822 const char *mountp, const char *mntopts) 823{ 824 mnttab_node_t *mtn; 825 826 if (avl_numnodes(&hdl->libzfs_mnttab_cache) == 0) 827 return; 828 mtn = zfs_alloc(hdl, sizeof (mnttab_node_t)); 829 mtn->mtn_mt.mnt_special = zfs_strdup(hdl, special); 830 mtn->mtn_mt.mnt_mountp = zfs_strdup(hdl, mountp); 831 mtn->mtn_mt.mnt_fstype = zfs_strdup(hdl, MNTTYPE_ZFS); 832 mtn->mtn_mt.mnt_mntopts = zfs_strdup(hdl, mntopts); 833 avl_add(&hdl->libzfs_mnttab_cache, mtn); 834} 835 836void 837libzfs_mnttab_remove(libzfs_handle_t *hdl, const char *fsname) 838{ 839 mnttab_node_t find; 840 mnttab_node_t *ret; 841 842 find.mtn_mt.mnt_special = (char *)fsname; 843 if (ret = avl_find(&hdl->libzfs_mnttab_cache, (void *)&find, NULL)) { 844 avl_remove(&hdl->libzfs_mnttab_cache, ret); 845 free(ret->mtn_mt.mnt_special); 846 free(ret->mtn_mt.mnt_mountp); 847 free(ret->mtn_mt.mnt_fstype); 848 free(ret->mtn_mt.mnt_mntopts); 849 free(ret); 850 } 851} 852 853int 854zfs_spa_version(zfs_handle_t *zhp, int *spa_version) 855{ 856 zpool_handle_t *zpool_handle = zhp->zpool_hdl; 857 858 if (zpool_handle == NULL) 859 return (-1); 860 861 *spa_version = zpool_get_prop_int(zpool_handle, 862 ZPOOL_PROP_VERSION, NULL); 863 return (0); 864} 865 866/* 867 * The choice of reservation property depends on the SPA version. 868 */ 869static int 870zfs_which_resv_prop(zfs_handle_t *zhp, zfs_prop_t *resv_prop) 871{ 872 int spa_version; 873 874 if (zfs_spa_version(zhp, &spa_version) < 0) 875 return (-1); 876 877 if (spa_version >= SPA_VERSION_REFRESERVATION) 878 *resv_prop = ZFS_PROP_REFRESERVATION; 879 else 880 *resv_prop = ZFS_PROP_RESERVATION; 881 882 return (0); 883} 884 885/* 886 * Given an nvlist of properties to set, validates that they are correct, and 887 * parses any numeric properties (index, boolean, etc) if they are specified as 888 * strings. 889 */ 890nvlist_t * 891zfs_valid_proplist(libzfs_handle_t *hdl, zfs_type_t type, nvlist_t *nvl, 892 uint64_t zoned, zfs_handle_t *zhp, const char *errbuf) 893{ 894 nvpair_t *elem; 895 uint64_t intval; 896 char *strval; 897 zfs_prop_t prop; 898 nvlist_t *ret; 899 int chosen_normal = -1; 900 int chosen_utf = -1; 901 902 if (nvlist_alloc(&ret, NV_UNIQUE_NAME, 0) != 0) { 903 (void) no_memory(hdl); 904 return (NULL); 905 } 906 907 /* 908 * Make sure this property is valid and applies to this type. 909 */ 910 911 elem = NULL; 912 while ((elem = nvlist_next_nvpair(nvl, elem)) != NULL) { 913 const char *propname = nvpair_name(elem); 914 915 prop = zfs_name_to_prop(propname); 916 if (prop == ZPROP_INVAL && zfs_prop_user(propname)) { 917 /* 918 * This is a user property: make sure it's a 919 * string, and that it's less than ZAP_MAXNAMELEN. 920 */ 921 if (nvpair_type(elem) != DATA_TYPE_STRING) { 922 zfs_error_aux(hdl, dgettext(TEXT_DOMAIN, 923 "'%s' must be a string"), propname); 924 (void) zfs_error(hdl, EZFS_BADPROP, errbuf); 925 goto error; 926 } 927 928 if (strlen(nvpair_name(elem)) >= ZAP_MAXNAMELEN) { 929 zfs_error_aux(hdl, dgettext(TEXT_DOMAIN, 930 "property name '%s' is too long"), 931 propname); 932 (void) zfs_error(hdl, EZFS_BADPROP, errbuf); 933 goto error; 934 } 935 936 (void) nvpair_value_string(elem, &strval); 937 if (nvlist_add_string(ret, propname, strval) != 0) { 938 (void) no_memory(hdl); 939 goto error; 940 } 941 continue; 942 } 943 944 /* 945 * Currently, only user properties can be modified on 946 * snapshots. 947 */ 948 if (type == ZFS_TYPE_SNAPSHOT) { 949 zfs_error_aux(hdl, dgettext(TEXT_DOMAIN, 950 "this property can not be modified for snapshots")); 951 (void) zfs_error(hdl, EZFS_PROPTYPE, errbuf); 952 goto error; 953 } 954 955 if (prop == ZPROP_INVAL && zfs_prop_userquota(propname)) { 956 zfs_userquota_prop_t uqtype; 957 char newpropname[128]; 958 char domain[128]; 959 uint64_t rid; 960 uint64_t valary[3]; 961 962 if (userquota_propname_decode(propname, zoned, 963 &uqtype, domain, sizeof (domain), &rid) != 0) { 964 zfs_error_aux(hdl, 965 dgettext(TEXT_DOMAIN, 966 "'%s' has an invalid user/group name"), 967 propname); 968 (void) zfs_error(hdl, EZFS_BADPROP, errbuf); 969 goto error; 970 } 971 972 if (uqtype != ZFS_PROP_USERQUOTA && 973 uqtype != ZFS_PROP_GROUPQUOTA) { 974 zfs_error_aux(hdl, 975 dgettext(TEXT_DOMAIN, "'%s' is readonly"), 976 propname); 977 (void) zfs_error(hdl, EZFS_PROPREADONLY, 978 errbuf); 979 goto error; 980 } 981 982 if (nvpair_type(elem) == DATA_TYPE_STRING) { 983 (void) nvpair_value_string(elem, &strval); 984 if (strcmp(strval, "none") == 0) { 985 intval = 0; 986 } else if (zfs_nicestrtonum(hdl, 987 strval, &intval) != 0) { 988 (void) zfs_error(hdl, 989 EZFS_BADPROP, errbuf); 990 goto error; 991 } 992 } else if (nvpair_type(elem) == 993 DATA_TYPE_UINT64) { 994 (void) nvpair_value_uint64(elem, &intval); 995 if (intval == 0) { 996 zfs_error_aux(hdl, dgettext(TEXT_DOMAIN, 997 "use 'none' to disable " 998 "userquota/groupquota")); 999 goto error; 1000 } 1001 } else { 1002 zfs_error_aux(hdl, dgettext(TEXT_DOMAIN, 1003 "'%s' must be a number"), propname); 1004 (void) zfs_error(hdl, EZFS_BADPROP, errbuf); 1005 goto error; 1006 } 1007 1008 /* 1009 * Encode the prop name as 1010 * userquota@<hex-rid>-domain, to make it easy 1011 * for the kernel to decode. 1012 */ 1013 (void) snprintf(newpropname, sizeof (newpropname), 1014 "%s%llx-%s", zfs_userquota_prop_prefixes[uqtype], 1015 (longlong_t)rid, domain); 1016 valary[0] = uqtype; 1017 valary[1] = rid; 1018 valary[2] = intval; 1019 if (nvlist_add_uint64_array(ret, newpropname, 1020 valary, 3) != 0) { 1021 (void) no_memory(hdl); 1022 goto error; 1023 } 1024 continue; 1025 } else if (prop == ZPROP_INVAL && zfs_prop_written(propname)) { 1026 zfs_error_aux(hdl, dgettext(TEXT_DOMAIN, 1027 "'%s' is readonly"), 1028 propname); 1029 (void) zfs_error(hdl, EZFS_PROPREADONLY, errbuf); 1030 goto error; 1031 } 1032 1033 if (prop == ZPROP_INVAL) { 1034 zfs_error_aux(hdl, dgettext(TEXT_DOMAIN, 1035 "invalid property '%s'"), propname); 1036 (void) zfs_error(hdl, EZFS_BADPROP, errbuf); 1037 goto error; 1038 } 1039 1040 if (!zfs_prop_valid_for_type(prop, type)) { 1041 zfs_error_aux(hdl, 1042 dgettext(TEXT_DOMAIN, "'%s' does not " 1043 "apply to datasets of this type"), propname); 1044 (void) zfs_error(hdl, EZFS_PROPTYPE, errbuf); 1045 goto error; 1046 } 1047 1048 if (zfs_prop_readonly(prop) && 1049 (!zfs_prop_setonce(prop) || zhp != NULL)) { 1050 zfs_error_aux(hdl, 1051 dgettext(TEXT_DOMAIN, "'%s' is readonly"), 1052 propname); 1053 (void) zfs_error(hdl, EZFS_PROPREADONLY, errbuf); 1054 goto error; 1055 } 1056 1057 if (zprop_parse_value(hdl, elem, prop, type, ret, 1058 &strval, &intval, errbuf) != 0) 1059 goto error; 1060 1061 /* 1062 * Perform some additional checks for specific properties. 1063 */ 1064 switch (prop) { 1065 case ZFS_PROP_VERSION: 1066 { 1067 int version; 1068 1069 if (zhp == NULL) 1070 break; 1071 version = zfs_prop_get_int(zhp, ZFS_PROP_VERSION); 1072 if (intval < version) { 1073 zfs_error_aux(hdl, dgettext(TEXT_DOMAIN, 1074 "Can not downgrade; already at version %u"), 1075 version); 1076 (void) zfs_error(hdl, EZFS_BADPROP, errbuf); 1077 goto error; 1078 } 1079 break; 1080 } 1081 1082 case ZFS_PROP_RECORDSIZE: 1083 case ZFS_PROP_VOLBLOCKSIZE: 1084 /* must be power of two within SPA_{MIN,MAX}BLOCKSIZE */ 1085 if (intval < SPA_MINBLOCKSIZE || 1086 intval > SPA_MAXBLOCKSIZE || !ISP2(intval)) { 1087 zfs_error_aux(hdl, dgettext(TEXT_DOMAIN, 1088 "'%s' must be power of 2 from %u " 1089 "to %uk"), propname, 1090 (uint_t)SPA_MINBLOCKSIZE, 1091 (uint_t)SPA_MAXBLOCKSIZE >> 10); 1092 (void) zfs_error(hdl, EZFS_BADPROP, errbuf); 1093 goto error; 1094 } 1095 break; 1096 1097 case ZFS_PROP_MLSLABEL: 1098 { 1099#ifdef sun 1100 /* 1101 * Verify the mlslabel string and convert to 1102 * internal hex label string. 1103 */ 1104 1105 m_label_t *new_sl; 1106 char *hex = NULL; /* internal label string */ 1107 1108 /* Default value is already OK. */ 1109 if (strcasecmp(strval, ZFS_MLSLABEL_DEFAULT) == 0) 1110 break; 1111 1112 /* Verify the label can be converted to binary form */ 1113 if (((new_sl = m_label_alloc(MAC_LABEL)) == NULL) || 1114 (str_to_label(strval, &new_sl, MAC_LABEL, 1115 L_NO_CORRECTION, NULL) == -1)) { 1116 goto badlabel; 1117 } 1118 1119 /* Now translate to hex internal label string */ 1120 if (label_to_str(new_sl, &hex, M_INTERNAL, 1121 DEF_NAMES) != 0) { 1122 if (hex) 1123 free(hex); 1124 goto badlabel; 1125 } 1126 m_label_free(new_sl); 1127 1128 /* If string is already in internal form, we're done. */ 1129 if (strcmp(strval, hex) == 0) { 1130 free(hex); 1131 break; 1132 } 1133 1134 /* Replace the label string with the internal form. */ 1135 (void) nvlist_remove(ret, zfs_prop_to_name(prop), 1136 DATA_TYPE_STRING); 1137 verify(nvlist_add_string(ret, zfs_prop_to_name(prop), 1138 hex) == 0); 1139 free(hex); 1140 1141 break; 1142 1143badlabel: 1144 zfs_error_aux(hdl, dgettext(TEXT_DOMAIN, 1145 "invalid mlslabel '%s'"), strval); 1146 (void) zfs_error(hdl, EZFS_BADPROP, errbuf); 1147 m_label_free(new_sl); /* OK if null */ 1148#else /* !sun */ 1149 zfs_error_aux(hdl, dgettext(TEXT_DOMAIN, 1150 "mlslabel is not supported on FreeBSD")); 1151 (void) zfs_error(hdl, EZFS_BADPROP, errbuf); 1152#endif /* !sun */ 1153 goto error; 1154 1155 } 1156 1157 case ZFS_PROP_MOUNTPOINT: 1158 { 1159 namecheck_err_t why; 1160 1161 if (strcmp(strval, ZFS_MOUNTPOINT_NONE) == 0 || 1162 strcmp(strval, ZFS_MOUNTPOINT_LEGACY) == 0) 1163 break; 1164 1165 if (mountpoint_namecheck(strval, &why)) { 1166 switch (why) { 1167 case NAME_ERR_LEADING_SLASH: 1168 zfs_error_aux(hdl, 1169 dgettext(TEXT_DOMAIN, 1170 "'%s' must be an absolute path, " 1171 "'none', or 'legacy'"), propname); 1172 break; 1173 case NAME_ERR_TOOLONG: 1174 zfs_error_aux(hdl, 1175 dgettext(TEXT_DOMAIN, 1176 "component of '%s' is too long"), 1177 propname); 1178 break; 1179 } 1180 (void) zfs_error(hdl, EZFS_BADPROP, errbuf); 1181 goto error; 1182 } 1183 } 1184 1185 /*FALLTHRU*/ 1186 1187 case ZFS_PROP_SHARESMB: 1188 case ZFS_PROP_SHARENFS: 1189 /* 1190 * For the mountpoint and sharenfs or sharesmb 1191 * properties, check if it can be set in a 1192 * global/non-global zone based on 1193 * the zoned property value: 1194 * 1195 * global zone non-global zone 1196 * -------------------------------------------------- 1197 * zoned=on mountpoint (no) mountpoint (yes) 1198 * sharenfs (no) sharenfs (no) 1199 * sharesmb (no) sharesmb (no) 1200 * 1201 * zoned=off mountpoint (yes) N/A 1202 * sharenfs (yes) 1203 * sharesmb (yes) 1204 */ 1205 if (zoned) { 1206 if (getzoneid() == GLOBAL_ZONEID) { 1207 zfs_error_aux(hdl, dgettext(TEXT_DOMAIN, 1208 "'%s' cannot be set on " 1209 "dataset in a non-global zone"), 1210 propname); 1211 (void) zfs_error(hdl, EZFS_ZONED, 1212 errbuf); 1213 goto error; 1214 } else if (prop == ZFS_PROP_SHARENFS || 1215 prop == ZFS_PROP_SHARESMB) { 1216 zfs_error_aux(hdl, dgettext(TEXT_DOMAIN, 1217 "'%s' cannot be set in " 1218 "a non-global zone"), propname); 1219 (void) zfs_error(hdl, EZFS_ZONED, 1220 errbuf); 1221 goto error; 1222 } 1223 } else if (getzoneid() != GLOBAL_ZONEID) { 1224 /* 1225 * If zoned property is 'off', this must be in 1226 * a global zone. If not, something is wrong. 1227 */ 1228 zfs_error_aux(hdl, dgettext(TEXT_DOMAIN, 1229 "'%s' cannot be set while dataset " 1230 "'zoned' property is set"), propname); 1231 (void) zfs_error(hdl, EZFS_ZONED, errbuf); 1232 goto error; 1233 } 1234 1235 /* 1236 * At this point, it is legitimate to set the 1237 * property. Now we want to make sure that the 1238 * property value is valid if it is sharenfs. 1239 */ 1240 if ((prop == ZFS_PROP_SHARENFS || 1241 prop == ZFS_PROP_SHARESMB) && 1242 strcmp(strval, "on") != 0 && 1243 strcmp(strval, "off") != 0) { 1244 zfs_share_proto_t proto; 1245 1246 if (prop == ZFS_PROP_SHARESMB) 1247 proto = PROTO_SMB; 1248 else 1249 proto = PROTO_NFS; 1250 1251 /* 1252 * Must be an valid sharing protocol 1253 * option string so init the libshare 1254 * in order to enable the parser and 1255 * then parse the options. We use the 1256 * control API since we don't care about 1257 * the current configuration and don't 1258 * want the overhead of loading it 1259 * until we actually do something. 1260 */ 1261 1262 if (zfs_init_libshare(hdl, 1263 SA_INIT_CONTROL_API) != SA_OK) { 1264 /* 1265 * An error occurred so we can't do 1266 * anything 1267 */ 1268 zfs_error_aux(hdl, dgettext(TEXT_DOMAIN, 1269 "'%s' cannot be set: problem " 1270 "in share initialization"), 1271 propname); 1272 (void) zfs_error(hdl, EZFS_BADPROP, 1273 errbuf); 1274 goto error; 1275 } 1276 1277 if (zfs_parse_options(strval, proto) != SA_OK) { 1278 /* 1279 * There was an error in parsing so 1280 * deal with it by issuing an error 1281 * message and leaving after 1282 * uninitializing the the libshare 1283 * interface. 1284 */ 1285 zfs_error_aux(hdl, dgettext(TEXT_DOMAIN, 1286 "'%s' cannot be set to invalid " 1287 "options"), propname); 1288 (void) zfs_error(hdl, EZFS_BADPROP, 1289 errbuf); 1290 zfs_uninit_libshare(hdl); 1291 goto error; 1292 } 1293 zfs_uninit_libshare(hdl); 1294 } 1295 1296 break; 1297 case ZFS_PROP_UTF8ONLY: 1298 chosen_utf = (int)intval; 1299 break; 1300 case ZFS_PROP_NORMALIZE: 1301 chosen_normal = (int)intval; 1302 break; 1303 } 1304 1305 /* 1306 * For changes to existing volumes, we have some additional 1307 * checks to enforce. 1308 */ 1309 if (type == ZFS_TYPE_VOLUME && zhp != NULL) { 1310 uint64_t volsize = zfs_prop_get_int(zhp, 1311 ZFS_PROP_VOLSIZE); 1312 uint64_t blocksize = zfs_prop_get_int(zhp, 1313 ZFS_PROP_VOLBLOCKSIZE); 1314 char buf[64]; 1315 1316 switch (prop) { 1317 case ZFS_PROP_RESERVATION: 1318 case ZFS_PROP_REFRESERVATION: 1319 if (intval > volsize) { 1320 zfs_error_aux(hdl, dgettext(TEXT_DOMAIN, 1321 "'%s' is greater than current " 1322 "volume size"), propname); 1323 (void) zfs_error(hdl, EZFS_BADPROP, 1324 errbuf); 1325 goto error; 1326 } 1327 break; 1328 1329 case ZFS_PROP_VOLSIZE: 1330 if (intval % blocksize != 0) { 1331 zfs_nicenum(blocksize, buf, 1332 sizeof (buf)); 1333 zfs_error_aux(hdl, dgettext(TEXT_DOMAIN, 1334 "'%s' must be a multiple of " 1335 "volume block size (%s)"), 1336 propname, buf); 1337 (void) zfs_error(hdl, EZFS_BADPROP, 1338 errbuf); 1339 goto error; 1340 } 1341 1342 if (intval == 0) { 1343 zfs_error_aux(hdl, dgettext(TEXT_DOMAIN, 1344 "'%s' cannot be zero"), 1345 propname); 1346 (void) zfs_error(hdl, EZFS_BADPROP, 1347 errbuf); 1348 goto error; 1349 } 1350 break; 1351 } 1352 } 1353 } 1354 1355 /* 1356 * If normalization was chosen, but no UTF8 choice was made, 1357 * enforce rejection of non-UTF8 names. 1358 * 1359 * If normalization was chosen, but rejecting non-UTF8 names 1360 * was explicitly not chosen, it is an error. 1361 */ 1362 if (chosen_normal > 0 && chosen_utf < 0) { 1363 if (nvlist_add_uint64(ret, 1364 zfs_prop_to_name(ZFS_PROP_UTF8ONLY), 1) != 0) { 1365 (void) no_memory(hdl); 1366 goto error; 1367 } 1368 } else if (chosen_normal > 0 && chosen_utf == 0) { 1369 zfs_error_aux(hdl, dgettext(TEXT_DOMAIN, 1370 "'%s' must be set 'on' if normalization chosen"), 1371 zfs_prop_to_name(ZFS_PROP_UTF8ONLY)); 1372 (void) zfs_error(hdl, EZFS_BADPROP, errbuf); 1373 goto error; 1374 } 1375 return (ret); 1376 1377error: 1378 nvlist_free(ret); 1379 return (NULL); 1380} 1381 1382int 1383zfs_add_synthetic_resv(zfs_handle_t *zhp, nvlist_t *nvl) 1384{ 1385 uint64_t old_volsize; 1386 uint64_t new_volsize; 1387 uint64_t old_reservation; 1388 uint64_t new_reservation; 1389 zfs_prop_t resv_prop; 1390 1391 /* 1392 * If this is an existing volume, and someone is setting the volsize, 1393 * make sure that it matches the reservation, or add it if necessary. 1394 */ 1395 old_volsize = zfs_prop_get_int(zhp, ZFS_PROP_VOLSIZE); 1396 if (zfs_which_resv_prop(zhp, &resv_prop) < 0) 1397 return (-1); 1398 old_reservation = zfs_prop_get_int(zhp, resv_prop); 1399 if ((zvol_volsize_to_reservation(old_volsize, zhp->zfs_props) != 1400 old_reservation) || nvlist_lookup_uint64(nvl, 1401 zfs_prop_to_name(resv_prop), &new_reservation) != ENOENT) { 1402 return (0); 1403 } 1404 if (nvlist_lookup_uint64(nvl, zfs_prop_to_name(ZFS_PROP_VOLSIZE), 1405 &new_volsize) != 0) 1406 return (-1); 1407 new_reservation = zvol_volsize_to_reservation(new_volsize, 1408 zhp->zfs_props); 1409 if (nvlist_add_uint64(nvl, zfs_prop_to_name(resv_prop), 1410 new_reservation) != 0) { 1411 (void) no_memory(zhp->zfs_hdl); 1412 return (-1); 1413 } 1414 return (1); 1415} 1416 1417void 1418zfs_setprop_error(libzfs_handle_t *hdl, zfs_prop_t prop, int err, 1419 char *errbuf) 1420{ 1421 switch (err) { 1422 1423 case ENOSPC: 1424 /* 1425 * For quotas and reservations, ENOSPC indicates 1426 * something different; setting a quota or reservation 1427 * doesn't use any disk space. 1428 */ 1429 switch (prop) { 1430 case ZFS_PROP_QUOTA: 1431 case ZFS_PROP_REFQUOTA: 1432 zfs_error_aux(hdl, dgettext(TEXT_DOMAIN, 1433 "size is less than current used or " 1434 "reserved space")); 1435 (void) zfs_error(hdl, EZFS_PROPSPACE, errbuf); 1436 break; 1437 1438 case ZFS_PROP_RESERVATION: 1439 case ZFS_PROP_REFRESERVATION: 1440 zfs_error_aux(hdl, dgettext(TEXT_DOMAIN, 1441 "size is greater than available space")); 1442 (void) zfs_error(hdl, EZFS_PROPSPACE, errbuf); 1443 break; 1444 1445 default: 1446 (void) zfs_standard_error(hdl, err, errbuf); 1447 break; 1448 } 1449 break; 1450 1451 case EBUSY: 1452 (void) zfs_standard_error(hdl, EBUSY, errbuf); 1453 break; 1454 1455 case EROFS: 1456 (void) zfs_error(hdl, EZFS_DSREADONLY, errbuf); 1457 break; 1458 1459 case ENOTSUP: 1460 zfs_error_aux(hdl, dgettext(TEXT_DOMAIN, 1461 "pool and or dataset must be upgraded to set this " 1462 "property or value")); 1463 (void) zfs_error(hdl, EZFS_BADVERSION, errbuf); 1464 break; 1465 1466 case ERANGE: 1467 if (prop == ZFS_PROP_COMPRESSION) { 1468 (void) zfs_error_aux(hdl, dgettext(TEXT_DOMAIN, 1469 "property setting is not allowed on " 1470 "bootable datasets")); 1471 (void) zfs_error(hdl, EZFS_NOTSUP, errbuf); 1472 } else { 1473 (void) zfs_standard_error(hdl, err, errbuf); 1474 } 1475 break; 1476 1477 case EINVAL: 1478 if (prop == ZPROP_INVAL) { 1479 (void) zfs_error(hdl, EZFS_BADPROP, errbuf); 1480 } else { 1481 (void) zfs_standard_error(hdl, err, errbuf); 1482 } 1483 break; 1484 1485 case EOVERFLOW: 1486 /* 1487 * This platform can't address a volume this big. 1488 */ 1489#ifdef _ILP32 1490 if (prop == ZFS_PROP_VOLSIZE) { 1491 (void) zfs_error(hdl, EZFS_VOLTOOBIG, errbuf); 1492 break; 1493 } 1494#endif 1495 /* FALLTHROUGH */ 1496 default: 1497 (void) zfs_standard_error(hdl, err, errbuf); 1498 } 1499} 1500 1501/* 1502 * Given a property name and value, set the property for the given dataset. 1503 */ 1504int 1505zfs_prop_set(zfs_handle_t *zhp, const char *propname, const char *propval) 1506{ 1507 zfs_cmd_t zc = { 0 }; 1508 int ret = -1; 1509 prop_changelist_t *cl = NULL; 1510 char errbuf[1024]; 1511 libzfs_handle_t *hdl = zhp->zfs_hdl; 1512 nvlist_t *nvl = NULL, *realprops; 1513 zfs_prop_t prop; 1514 boolean_t do_prefix = B_TRUE; 1515 int added_resv; 1516 1517 (void) snprintf(errbuf, sizeof (errbuf), 1518 dgettext(TEXT_DOMAIN, "cannot set property for '%s'"), 1519 zhp->zfs_name); 1520 1521 if (nvlist_alloc(&nvl, NV_UNIQUE_NAME, 0) != 0 || 1522 nvlist_add_string(nvl, propname, propval) != 0) { 1523 (void) no_memory(hdl); 1524 goto error; 1525 } 1526 1527 if ((realprops = zfs_valid_proplist(hdl, zhp->zfs_type, nvl, 1528 zfs_prop_get_int(zhp, ZFS_PROP_ZONED), zhp, errbuf)) == NULL) 1529 goto error; 1530 1531 nvlist_free(nvl); 1532 nvl = realprops; 1533 1534 prop = zfs_name_to_prop(propname); 1535 1536 /* We don't support those properties on FreeBSD. */ 1537 switch (prop) { 1538 case ZFS_PROP_DEVICES: 1539 case ZFS_PROP_ISCSIOPTIONS: 1540 case ZFS_PROP_XATTR: 1541 case ZFS_PROP_VSCAN: 1542 case ZFS_PROP_NBMAND: 1543 case ZFS_PROP_MLSLABEL: 1544 (void) snprintf(errbuf, sizeof (errbuf), 1545 "property '%s' not supported on FreeBSD", propname); 1546 ret = zfs_error(hdl, EZFS_PERM, errbuf); 1547 goto error; 1548 } 1549 1550 if (prop == ZFS_PROP_VOLSIZE) { 1551 if ((added_resv = zfs_add_synthetic_resv(zhp, nvl)) == -1) 1552 goto error; 1553 } 1554 1555 if ((cl = changelist_gather(zhp, prop, 0, 0)) == NULL) 1556 goto error; 1557 1558 if (prop == ZFS_PROP_MOUNTPOINT && changelist_haszonedchild(cl)) { 1559 zfs_error_aux(hdl, dgettext(TEXT_DOMAIN, 1560 "child dataset with inherited mountpoint is used " 1561 "in a non-global zone")); 1562 ret = zfs_error(hdl, EZFS_ZONED, errbuf); 1563 goto error; 1564 } 1565 1566 /* 1567 * We don't want to unmount & remount the dataset when changing 1568 * its canmount property to 'on' or 'noauto'. We only use 1569 * the changelist logic to unmount when setting canmount=off. 1570 */ 1571 if (prop == ZFS_PROP_CANMOUNT) { 1572 uint64_t idx; 1573 int err = zprop_string_to_index(prop, propval, &idx, 1574 ZFS_TYPE_DATASET); 1575 if (err == 0 && idx != ZFS_CANMOUNT_OFF) 1576 do_prefix = B_FALSE; 1577 } 1578 1579 if (do_prefix && (ret = changelist_prefix(cl)) != 0) 1580 goto error; 1581 1582 /* 1583 * Execute the corresponding ioctl() to set this property. 1584 */ 1585 (void) strlcpy(zc.zc_name, zhp->zfs_name, sizeof (zc.zc_name)); 1586 1587 if (zcmd_write_src_nvlist(hdl, &zc, nvl) != 0) 1588 goto error; 1589 1590 ret = zfs_ioctl(hdl, ZFS_IOC_SET_PROP, &zc); 1591 1592 if (ret != 0) { 1593 zfs_setprop_error(hdl, prop, errno, errbuf); 1594 if (added_resv && errno == ENOSPC) { 1595 /* clean up the volsize property we tried to set */ 1596 uint64_t old_volsize = zfs_prop_get_int(zhp, 1597 ZFS_PROP_VOLSIZE); 1598 nvlist_free(nvl); 1599 zcmd_free_nvlists(&zc); 1600 if (nvlist_alloc(&nvl, NV_UNIQUE_NAME, 0) != 0) 1601 goto error; 1602 if (nvlist_add_uint64(nvl, 1603 zfs_prop_to_name(ZFS_PROP_VOLSIZE), 1604 old_volsize) != 0) 1605 goto error; 1606 if (zcmd_write_src_nvlist(hdl, &zc, nvl) != 0) 1607 goto error; 1608 (void) zfs_ioctl(hdl, ZFS_IOC_SET_PROP, &zc); 1609 } 1610 } else { 1611 if (do_prefix) 1612 ret = changelist_postfix(cl); 1613 1614 /* 1615 * Refresh the statistics so the new property value 1616 * is reflected. 1617 */ 1618 if (ret == 0) 1619 (void) get_stats(zhp); 1620 } 1621 1622error: 1623 nvlist_free(nvl); 1624 zcmd_free_nvlists(&zc); 1625 if (cl) 1626 changelist_free(cl); 1627 return (ret); 1628} 1629 1630/* 1631 * Given a property, inherit the value from the parent dataset, or if received 1632 * is TRUE, revert to the received value, if any. 1633 */ 1634int 1635zfs_prop_inherit(zfs_handle_t *zhp, const char *propname, boolean_t received) 1636{ 1637 zfs_cmd_t zc = { 0 }; 1638 int ret; 1639 prop_changelist_t *cl; 1640 libzfs_handle_t *hdl = zhp->zfs_hdl; 1641 char errbuf[1024]; 1642 zfs_prop_t prop; 1643 1644 (void) snprintf(errbuf, sizeof (errbuf), dgettext(TEXT_DOMAIN, 1645 "cannot inherit %s for '%s'"), propname, zhp->zfs_name); 1646 1647 zc.zc_cookie = received; 1648 if ((prop = zfs_name_to_prop(propname)) == ZPROP_INVAL) { 1649 /* 1650 * For user properties, the amount of work we have to do is very 1651 * small, so just do it here. 1652 */ 1653 if (!zfs_prop_user(propname)) { 1654 zfs_error_aux(hdl, dgettext(TEXT_DOMAIN, 1655 "invalid property")); 1656 return (zfs_error(hdl, EZFS_BADPROP, errbuf)); 1657 } 1658 1659 (void) strlcpy(zc.zc_name, zhp->zfs_name, sizeof (zc.zc_name)); 1660 (void) strlcpy(zc.zc_value, propname, sizeof (zc.zc_value)); 1661 1662 if (zfs_ioctl(zhp->zfs_hdl, ZFS_IOC_INHERIT_PROP, &zc) != 0) 1663 return (zfs_standard_error(hdl, errno, errbuf)); 1664 1665 return (0); 1666 } 1667 1668 /* 1669 * Verify that this property is inheritable. 1670 */ 1671 if (zfs_prop_readonly(prop)) 1672 return (zfs_error(hdl, EZFS_PROPREADONLY, errbuf)); 1673 1674 if (!zfs_prop_inheritable(prop) && !received) 1675 return (zfs_error(hdl, EZFS_PROPNONINHERIT, errbuf)); 1676 1677 /* 1678 * Check to see if the value applies to this type 1679 */ 1680 if (!zfs_prop_valid_for_type(prop, zhp->zfs_type)) 1681 return (zfs_error(hdl, EZFS_PROPTYPE, errbuf)); 1682 1683 /* 1684 * Normalize the name, to get rid of shorthand abbreviations. 1685 */ 1686 propname = zfs_prop_to_name(prop); 1687 (void) strlcpy(zc.zc_name, zhp->zfs_name, sizeof (zc.zc_name)); 1688 (void) strlcpy(zc.zc_value, propname, sizeof (zc.zc_value)); 1689 1690 if (prop == ZFS_PROP_MOUNTPOINT && getzoneid() == GLOBAL_ZONEID && 1691 zfs_prop_get_int(zhp, ZFS_PROP_ZONED)) { 1692 zfs_error_aux(hdl, dgettext(TEXT_DOMAIN, 1693 "dataset is used in a non-global zone")); 1694 return (zfs_error(hdl, EZFS_ZONED, errbuf)); 1695 } 1696 1697 /* 1698 * Determine datasets which will be affected by this change, if any. 1699 */ 1700 if ((cl = changelist_gather(zhp, prop, 0, 0)) == NULL) 1701 return (-1); 1702 1703 if (prop == ZFS_PROP_MOUNTPOINT && changelist_haszonedchild(cl)) { 1704 zfs_error_aux(hdl, dgettext(TEXT_DOMAIN, 1705 "child dataset with inherited mountpoint is used " 1706 "in a non-global zone")); 1707 ret = zfs_error(hdl, EZFS_ZONED, errbuf); 1708 goto error; 1709 } 1710 1711 if ((ret = changelist_prefix(cl)) != 0) 1712 goto error; 1713 1714 if ((ret = zfs_ioctl(zhp->zfs_hdl, ZFS_IOC_INHERIT_PROP, &zc)) != 0) { 1715 return (zfs_standard_error(hdl, errno, errbuf)); 1716 } else { 1717 1718 if ((ret = changelist_postfix(cl)) != 0) 1719 goto error; 1720 1721 /* 1722 * Refresh the statistics so the new property is reflected. 1723 */ 1724 (void) get_stats(zhp); 1725 } 1726 1727error: 1728 changelist_free(cl); 1729 return (ret); 1730} 1731 1732/* 1733 * True DSL properties are stored in an nvlist. The following two functions 1734 * extract them appropriately. 1735 */ 1736static uint64_t 1737getprop_uint64(zfs_handle_t *zhp, zfs_prop_t prop, char **source) 1738{ 1739 nvlist_t *nv; 1740 uint64_t value; 1741 1742 *source = NULL; 1743 if (nvlist_lookup_nvlist(zhp->zfs_props, 1744 zfs_prop_to_name(prop), &nv) == 0) { 1745 verify(nvlist_lookup_uint64(nv, ZPROP_VALUE, &value) == 0); 1746 (void) nvlist_lookup_string(nv, ZPROP_SOURCE, source); 1747 } else { 1748 verify(!zhp->zfs_props_table || 1749 zhp->zfs_props_table[prop] == B_TRUE); 1750 value = zfs_prop_default_numeric(prop); 1751 *source = ""; 1752 } 1753 1754 return (value); 1755} 1756 1757static char * 1758getprop_string(zfs_handle_t *zhp, zfs_prop_t prop, char **source) 1759{ 1760 nvlist_t *nv; 1761 char *value; 1762 1763 *source = NULL; 1764 if (nvlist_lookup_nvlist(zhp->zfs_props, 1765 zfs_prop_to_name(prop), &nv) == 0) { 1766 verify(nvlist_lookup_string(nv, ZPROP_VALUE, &value) == 0); 1767 (void) nvlist_lookup_string(nv, ZPROP_SOURCE, source); 1768 } else { 1769 verify(!zhp->zfs_props_table || 1770 zhp->zfs_props_table[prop] == B_TRUE); 1771 if ((value = (char *)zfs_prop_default_string(prop)) == NULL) 1772 value = ""; 1773 *source = ""; 1774 } 1775 1776 return (value); 1777} 1778 1779static boolean_t 1780zfs_is_recvd_props_mode(zfs_handle_t *zhp) 1781{ 1782 return (zhp->zfs_props == zhp->zfs_recvd_props); 1783} 1784 1785static void 1786zfs_set_recvd_props_mode(zfs_handle_t *zhp, uint64_t *cookie) 1787{ 1788 *cookie = (uint64_t)(uintptr_t)zhp->zfs_props; 1789 zhp->zfs_props = zhp->zfs_recvd_props; 1790} 1791 1792static void 1793zfs_unset_recvd_props_mode(zfs_handle_t *zhp, uint64_t *cookie) 1794{ 1795 zhp->zfs_props = (nvlist_t *)(uintptr_t)*cookie; 1796 *cookie = 0; 1797} 1798 1799/* 1800 * Internal function for getting a numeric property. Both zfs_prop_get() and 1801 * zfs_prop_get_int() are built using this interface. 1802 * 1803 * Certain properties can be overridden using 'mount -o'. In this case, scan 1804 * the contents of the /etc/mnttab entry, searching for the appropriate options. 1805 * If they differ from the on-disk values, report the current values and mark 1806 * the source "temporary". 1807 */ 1808static int 1809get_numeric_property(zfs_handle_t *zhp, zfs_prop_t prop, zprop_source_t *src, 1810 char **source, uint64_t *val) 1811{ 1812 zfs_cmd_t zc = { 0 }; 1813 nvlist_t *zplprops = NULL; 1814 struct mnttab mnt; 1815 char *mntopt_on = NULL; 1816 char *mntopt_off = NULL; 1817 boolean_t received = zfs_is_recvd_props_mode(zhp); 1818 1819 *source = NULL; 1820 1821 switch (prop) { 1822 case ZFS_PROP_ATIME: 1823 mntopt_on = MNTOPT_ATIME; 1824 mntopt_off = MNTOPT_NOATIME; 1825 break; 1826 1827 case ZFS_PROP_DEVICES: 1828 mntopt_on = MNTOPT_DEVICES; 1829 mntopt_off = MNTOPT_NODEVICES; 1830 break; 1831 1832 case ZFS_PROP_EXEC: 1833 mntopt_on = MNTOPT_EXEC; 1834 mntopt_off = MNTOPT_NOEXEC; 1835 break; 1836 1837 case ZFS_PROP_READONLY: 1838 mntopt_on = MNTOPT_RO; 1839 mntopt_off = MNTOPT_RW; 1840 break; 1841 1842 case ZFS_PROP_SETUID: 1843 mntopt_on = MNTOPT_SETUID; 1844 mntopt_off = MNTOPT_NOSETUID; 1845 break; 1846 1847 case ZFS_PROP_XATTR: 1848 mntopt_on = MNTOPT_XATTR; 1849 mntopt_off = MNTOPT_NOXATTR; 1850 break; 1851 1852 case ZFS_PROP_NBMAND: 1853 mntopt_on = MNTOPT_NBMAND; 1854 mntopt_off = MNTOPT_NONBMAND; 1855 break; 1856 } 1857 1858 /* 1859 * Because looking up the mount options is potentially expensive 1860 * (iterating over all of /etc/mnttab), we defer its calculation until 1861 * we're looking up a property which requires its presence. 1862 */ 1863 if (!zhp->zfs_mntcheck && 1864 (mntopt_on != NULL || prop == ZFS_PROP_MOUNTED)) { 1865 libzfs_handle_t *hdl = zhp->zfs_hdl; 1866 struct mnttab entry; 1867 1868 if (libzfs_mnttab_find(hdl, zhp->zfs_name, &entry) == 0) { 1869 zhp->zfs_mntopts = zfs_strdup(hdl, 1870 entry.mnt_mntopts); 1871 if (zhp->zfs_mntopts == NULL) 1872 return (-1); 1873 } 1874 1875 zhp->zfs_mntcheck = B_TRUE; 1876 } 1877 1878 if (zhp->zfs_mntopts == NULL) 1879 mnt.mnt_mntopts = ""; 1880 else 1881 mnt.mnt_mntopts = zhp->zfs_mntopts; 1882 1883 switch (prop) { 1884 case ZFS_PROP_ATIME: 1885 case ZFS_PROP_DEVICES: 1886 case ZFS_PROP_EXEC: 1887 case ZFS_PROP_READONLY: 1888 case ZFS_PROP_SETUID: 1889 case ZFS_PROP_XATTR: 1890 case ZFS_PROP_NBMAND: 1891 *val = getprop_uint64(zhp, prop, source); 1892 1893 if (received) 1894 break; 1895 1896 if (hasmntopt(&mnt, mntopt_on) && !*val) { 1897 *val = B_TRUE; 1898 if (src) 1899 *src = ZPROP_SRC_TEMPORARY; 1900 } else if (hasmntopt(&mnt, mntopt_off) && *val) { 1901 *val = B_FALSE; 1902 if (src) 1903 *src = ZPROP_SRC_TEMPORARY; 1904 } 1905 break; 1906 1907 case ZFS_PROP_CANMOUNT: 1908 case ZFS_PROP_VOLSIZE: 1909 case ZFS_PROP_QUOTA: 1910 case ZFS_PROP_REFQUOTA: 1911 case ZFS_PROP_RESERVATION: 1912 case ZFS_PROP_REFRESERVATION: 1913 *val = getprop_uint64(zhp, prop, source); 1914 1915 if (*source == NULL) { 1916 /* not default, must be local */ 1917 *source = zhp->zfs_name; 1918 } 1919 break; 1920 1921 case ZFS_PROP_MOUNTED: 1922 *val = (zhp->zfs_mntopts != NULL); 1923 break; 1924 1925 case ZFS_PROP_NUMCLONES: 1926 *val = zhp->zfs_dmustats.dds_num_clones; 1927 break; 1928 1929 case ZFS_PROP_VERSION: 1930 case ZFS_PROP_NORMALIZE: 1931 case ZFS_PROP_UTF8ONLY: 1932 case ZFS_PROP_CASE: 1933 if (!zfs_prop_valid_for_type(prop, zhp->zfs_head_type) || 1934 zcmd_alloc_dst_nvlist(zhp->zfs_hdl, &zc, 0) != 0) 1935 return (-1); 1936 (void) strlcpy(zc.zc_name, zhp->zfs_name, sizeof (zc.zc_name)); 1937 if (zfs_ioctl(zhp->zfs_hdl, ZFS_IOC_OBJSET_ZPLPROPS, &zc)) { 1938 zcmd_free_nvlists(&zc); 1939 return (-1); 1940 } 1941 if (zcmd_read_dst_nvlist(zhp->zfs_hdl, &zc, &zplprops) != 0 || 1942 nvlist_lookup_uint64(zplprops, zfs_prop_to_name(prop), 1943 val) != 0) { 1944 zcmd_free_nvlists(&zc); 1945 return (-1); 1946 } 1947 if (zplprops) 1948 nvlist_free(zplprops); 1949 zcmd_free_nvlists(&zc); 1950 break; 1951 1952 case ZFS_PROP_INCONSISTENT: 1953 *val = zhp->zfs_dmustats.dds_inconsistent; 1954 break; 1955 1956 default: 1957 switch (zfs_prop_get_type(prop)) { 1958 case PROP_TYPE_NUMBER: 1959 case PROP_TYPE_INDEX: 1960 *val = getprop_uint64(zhp, prop, source); 1961 /* 1962 * If we tried to use a default value for a 1963 * readonly property, it means that it was not 1964 * present. 1965 */ 1966 if (zfs_prop_readonly(prop) && 1967 *source != NULL && (*source)[0] == '\0') { 1968 *source = NULL; 1969 } 1970 break; 1971 1972 case PROP_TYPE_STRING: 1973 default: 1974 zfs_error_aux(zhp->zfs_hdl, dgettext(TEXT_DOMAIN, 1975 "cannot get non-numeric property")); 1976 return (zfs_error(zhp->zfs_hdl, EZFS_BADPROP, 1977 dgettext(TEXT_DOMAIN, "internal error"))); 1978 } 1979 } 1980 1981 return (0); 1982} 1983 1984/* 1985 * Calculate the source type, given the raw source string. 1986 */ 1987static void 1988get_source(zfs_handle_t *zhp, zprop_source_t *srctype, char *source, 1989 char *statbuf, size_t statlen) 1990{ 1991 if (statbuf == NULL || *srctype == ZPROP_SRC_TEMPORARY) 1992 return; 1993 1994 if (source == NULL) { 1995 *srctype = ZPROP_SRC_NONE; 1996 } else if (source[0] == '\0') { 1997 *srctype = ZPROP_SRC_DEFAULT; 1998 } else if (strstr(source, ZPROP_SOURCE_VAL_RECVD) != NULL) { 1999 *srctype = ZPROP_SRC_RECEIVED; 2000 } else { 2001 if (strcmp(source, zhp->zfs_name) == 0) { 2002 *srctype = ZPROP_SRC_LOCAL; 2003 } else { 2004 (void) strlcpy(statbuf, source, statlen); 2005 *srctype = ZPROP_SRC_INHERITED; 2006 } 2007 } 2008 2009} 2010 2011int 2012zfs_prop_get_recvd(zfs_handle_t *zhp, const char *propname, char *propbuf, 2013 size_t proplen, boolean_t literal) 2014{ 2015 zfs_prop_t prop; 2016 int err = 0; 2017 2018 if (zhp->zfs_recvd_props == NULL) 2019 if (get_recvd_props_ioctl(zhp) != 0) 2020 return (-1); 2021 2022 prop = zfs_name_to_prop(propname); 2023 2024 if (prop != ZPROP_INVAL) { 2025 uint64_t cookie; 2026 if (!nvlist_exists(zhp->zfs_recvd_props, propname)) 2027 return (-1); 2028 zfs_set_recvd_props_mode(zhp, &cookie); 2029 err = zfs_prop_get(zhp, prop, propbuf, proplen, 2030 NULL, NULL, 0, literal); 2031 zfs_unset_recvd_props_mode(zhp, &cookie); 2032 } else { 2033 nvlist_t *propval; 2034 char *recvdval; 2035 if (nvlist_lookup_nvlist(zhp->zfs_recvd_props, 2036 propname, &propval) != 0) 2037 return (-1); 2038 verify(nvlist_lookup_string(propval, ZPROP_VALUE, 2039 &recvdval) == 0); 2040 (void) strlcpy(propbuf, recvdval, proplen); 2041 } 2042 2043 return (err == 0 ? 0 : -1); 2044} 2045 2046static int 2047get_clones_string(zfs_handle_t *zhp, char *propbuf, size_t proplen) 2048{ 2049 nvlist_t *value; 2050 nvpair_t *pair; 2051 2052 value = zfs_get_clones_nvl(zhp); 2053 if (value == NULL) 2054 return (-1); 2055 2056 propbuf[0] = '\0'; 2057 for (pair = nvlist_next_nvpair(value, NULL); pair != NULL; 2058 pair = nvlist_next_nvpair(value, pair)) { 2059 if (propbuf[0] != '\0') 2060 (void) strlcat(propbuf, ",", proplen); 2061 (void) strlcat(propbuf, nvpair_name(pair), proplen); 2062 } 2063 2064 return (0); 2065} 2066 2067struct get_clones_arg { 2068 uint64_t numclones; 2069 nvlist_t *value; 2070 const char *origin; 2071 char buf[ZFS_MAXNAMELEN]; 2072}; 2073 2074int 2075get_clones_cb(zfs_handle_t *zhp, void *arg) 2076{ 2077 struct get_clones_arg *gca = arg; 2078 2079 if (gca->numclones == 0) { 2080 zfs_close(zhp); 2081 return (0); 2082 } 2083 2084 if (zfs_prop_get(zhp, ZFS_PROP_ORIGIN, gca->buf, sizeof (gca->buf), 2085 NULL, NULL, 0, B_TRUE) != 0) 2086 goto out; 2087 if (strcmp(gca->buf, gca->origin) == 0) { 2088 fnvlist_add_boolean(gca->value, zfs_get_name(zhp)); 2089 gca->numclones--; 2090 } 2091 2092out: 2093 (void) zfs_iter_children(zhp, get_clones_cb, gca); 2094 zfs_close(zhp); 2095 return (0); 2096} 2097 2098nvlist_t * 2099zfs_get_clones_nvl(zfs_handle_t *zhp) 2100{ 2101 nvlist_t *nv, *value; 2102 2103 if (nvlist_lookup_nvlist(zhp->zfs_props, 2104 zfs_prop_to_name(ZFS_PROP_CLONES), &nv) != 0) { 2105 struct get_clones_arg gca; 2106 2107 /* 2108 * if this is a snapshot, then the kernel wasn't able 2109 * to get the clones. Do it by slowly iterating. 2110 */ 2111 if (zhp->zfs_type != ZFS_TYPE_SNAPSHOT) 2112 return (NULL); 2113 if (nvlist_alloc(&nv, NV_UNIQUE_NAME, 0) != 0) 2114 return (NULL); 2115 if (nvlist_alloc(&value, NV_UNIQUE_NAME, 0) != 0) { 2116 nvlist_free(nv); 2117 return (NULL); 2118 } 2119 2120 gca.numclones = zfs_prop_get_int(zhp, ZFS_PROP_NUMCLONES); 2121 gca.value = value; 2122 gca.origin = zhp->zfs_name; 2123 2124 if (gca.numclones != 0) { 2125 zfs_handle_t *root; 2126 char pool[ZFS_MAXNAMELEN]; 2127 char *cp = pool; 2128 2129 /* get the pool name */ 2130 (void) strlcpy(pool, zhp->zfs_name, sizeof (pool)); 2131 (void) strsep(&cp, "/@"); 2132 root = zfs_open(zhp->zfs_hdl, pool, 2133 ZFS_TYPE_FILESYSTEM); 2134 2135 (void) get_clones_cb(root, &gca); 2136 } 2137 2138 if (gca.numclones != 0 || 2139 nvlist_add_nvlist(nv, ZPROP_VALUE, value) != 0 || 2140 nvlist_add_nvlist(zhp->zfs_props, 2141 zfs_prop_to_name(ZFS_PROP_CLONES), nv) != 0) { 2142 nvlist_free(nv); 2143 nvlist_free(value); 2144 return (NULL); 2145 } 2146 nvlist_free(nv); 2147 nvlist_free(value); 2148 verify(0 == nvlist_lookup_nvlist(zhp->zfs_props, 2149 zfs_prop_to_name(ZFS_PROP_CLONES), &nv)); 2150 } 2151 2152 verify(nvlist_lookup_nvlist(nv, ZPROP_VALUE, &value) == 0); 2153 2154 return (value); 2155} 2156 2157/* 2158 * Retrieve a property from the given object. If 'literal' is specified, then 2159 * numbers are left as exact values. Otherwise, numbers are converted to a 2160 * human-readable form. 2161 * 2162 * Returns 0 on success, or -1 on error. 2163 */ 2164int 2165zfs_prop_get(zfs_handle_t *zhp, zfs_prop_t prop, char *propbuf, size_t proplen, 2166 zprop_source_t *src, char *statbuf, size_t statlen, boolean_t literal) 2167{ 2168 char *source = NULL; 2169 uint64_t val; 2170 char *str; 2171 const char *strval; 2172 boolean_t received = zfs_is_recvd_props_mode(zhp); 2173 2174 /* 2175 * Check to see if this property applies to our object 2176 */ 2177 if (!zfs_prop_valid_for_type(prop, zhp->zfs_type)) 2178 return (-1); 2179 2180 if (received && zfs_prop_readonly(prop)) 2181 return (-1); 2182 2183 if (src) 2184 *src = ZPROP_SRC_NONE; 2185 2186 switch (prop) { 2187 case ZFS_PROP_CREATION: 2188 /* 2189 * 'creation' is a time_t stored in the statistics. We convert 2190 * this into a string unless 'literal' is specified. 2191 */ 2192 { 2193 val = getprop_uint64(zhp, prop, &source); 2194 time_t time = (time_t)val; 2195 struct tm t; 2196 2197 if (literal || 2198 localtime_r(&time, &t) == NULL || 2199 strftime(propbuf, proplen, "%a %b %e %k:%M %Y", 2200 &t) == 0) 2201 (void) snprintf(propbuf, proplen, "%llu", val); 2202 } 2203 break; 2204 2205 case ZFS_PROP_MOUNTPOINT: 2206 /* 2207 * Getting the precise mountpoint can be tricky. 2208 * 2209 * - for 'none' or 'legacy', return those values. 2210 * - for inherited mountpoints, we want to take everything 2211 * after our ancestor and append it to the inherited value. 2212 * 2213 * If the pool has an alternate root, we want to prepend that 2214 * root to any values we return. 2215 */ 2216 2217 str = getprop_string(zhp, prop, &source); 2218 2219 if (str[0] == '/') { 2220 char buf[MAXPATHLEN]; 2221 char *root = buf; 2222 const char *relpath; 2223 2224 /* 2225 * If we inherit the mountpoint, even from a dataset 2226 * with a received value, the source will be the path of 2227 * the dataset we inherit from. If source is 2228 * ZPROP_SOURCE_VAL_RECVD, the received value is not 2229 * inherited. 2230 */ 2231 if (strcmp(source, ZPROP_SOURCE_VAL_RECVD) == 0) { 2232 relpath = ""; 2233 } else { 2234 relpath = zhp->zfs_name + strlen(source); 2235 if (relpath[0] == '/') 2236 relpath++; 2237 } 2238 2239 if ((zpool_get_prop(zhp->zpool_hdl, 2240 ZPOOL_PROP_ALTROOT, buf, MAXPATHLEN, NULL, 2241 B_FALSE)) || (strcmp(root, "-") == 0)) 2242 root[0] = '\0'; 2243 /* 2244 * Special case an alternate root of '/'. This will 2245 * avoid having multiple leading slashes in the 2246 * mountpoint path. 2247 */ 2248 if (strcmp(root, "/") == 0) 2249 root++; 2250 2251 /* 2252 * If the mountpoint is '/' then skip over this 2253 * if we are obtaining either an alternate root or 2254 * an inherited mountpoint. 2255 */ 2256 if (str[1] == '\0' && (root[0] != '\0' || 2257 relpath[0] != '\0')) 2258 str++; 2259 2260 if (relpath[0] == '\0') 2261 (void) snprintf(propbuf, proplen, "%s%s", 2262 root, str); 2263 else 2264 (void) snprintf(propbuf, proplen, "%s%s%s%s", 2265 root, str, relpath[0] == '@' ? "" : "/", 2266 relpath); 2267 } else { 2268 /* 'legacy' or 'none' */ 2269 (void) strlcpy(propbuf, str, proplen); 2270 } 2271 2272 break; 2273 2274 case ZFS_PROP_ORIGIN: 2275 (void) strlcpy(propbuf, getprop_string(zhp, prop, &source), 2276 proplen); 2277 /* 2278 * If there is no parent at all, return failure to indicate that 2279 * it doesn't apply to this dataset. 2280 */ 2281 if (propbuf[0] == '\0') 2282 return (-1); 2283 break; 2284 2285 case ZFS_PROP_CLONES: 2286 if (get_clones_string(zhp, propbuf, proplen) != 0) 2287 return (-1); 2288 break; 2289 2290 case ZFS_PROP_QUOTA: 2291 case ZFS_PROP_REFQUOTA: 2292 case ZFS_PROP_RESERVATION: 2293 case ZFS_PROP_REFRESERVATION: 2294 2295 if (get_numeric_property(zhp, prop, src, &source, &val) != 0) 2296 return (-1); 2297 2298 /* 2299 * If quota or reservation is 0, we translate this into 'none' 2300 * (unless literal is set), and indicate that it's the default 2301 * value. Otherwise, we print the number nicely and indicate 2302 * that its set locally. 2303 */ 2304 if (val == 0) { 2305 if (literal) 2306 (void) strlcpy(propbuf, "0", proplen); 2307 else 2308 (void) strlcpy(propbuf, "none", proplen); 2309 } else { 2310 if (literal) 2311 (void) snprintf(propbuf, proplen, "%llu", 2312 (u_longlong_t)val); 2313 else 2314 zfs_nicenum(val, propbuf, proplen); 2315 } 2316 break; 2317 2318 case ZFS_PROP_REFRATIO: 2319 case ZFS_PROP_COMPRESSRATIO: 2320 if (get_numeric_property(zhp, prop, src, &source, &val) != 0) 2321 return (-1); 2322 (void) snprintf(propbuf, proplen, "%llu.%02llux", 2323 (u_longlong_t)(val / 100), 2324 (u_longlong_t)(val % 100)); 2325 break; 2326 2327 case ZFS_PROP_TYPE: 2328 switch (zhp->zfs_type) { 2329 case ZFS_TYPE_FILESYSTEM: 2330 str = "filesystem"; 2331 break; 2332 case ZFS_TYPE_VOLUME: 2333 str = "volume"; 2334 break; 2335 case ZFS_TYPE_SNAPSHOT: 2336 str = "snapshot"; 2337 break; 2338 case ZFS_TYPE_BOOKMARK: 2339 str = "bookmark"; 2340 break; 2341 default: 2342 abort(); 2343 } 2344 (void) snprintf(propbuf, proplen, "%s", str); 2345 break; 2346 2347 case ZFS_PROP_MOUNTED: 2348 /* 2349 * The 'mounted' property is a pseudo-property that described 2350 * whether the filesystem is currently mounted. Even though 2351 * it's a boolean value, the typical values of "on" and "off" 2352 * don't make sense, so we translate to "yes" and "no". 2353 */ 2354 if (get_numeric_property(zhp, ZFS_PROP_MOUNTED, 2355 src, &source, &val) != 0) 2356 return (-1); 2357 if (val) 2358 (void) strlcpy(propbuf, "yes", proplen); 2359 else 2360 (void) strlcpy(propbuf, "no", proplen); 2361 break; 2362 2363 case ZFS_PROP_NAME: 2364 /* 2365 * The 'name' property is a pseudo-property derived from the 2366 * dataset name. It is presented as a real property to simplify 2367 * consumers. 2368 */ 2369 (void) strlcpy(propbuf, zhp->zfs_name, proplen); 2370 break; 2371 2372 case ZFS_PROP_MLSLABEL: 2373 { 2374#ifdef sun 2375 m_label_t *new_sl = NULL; 2376 char *ascii = NULL; /* human readable label */ 2377 2378 (void) strlcpy(propbuf, 2379 getprop_string(zhp, prop, &source), proplen); 2380 2381 if (literal || (strcasecmp(propbuf, 2382 ZFS_MLSLABEL_DEFAULT) == 0)) 2383 break; 2384 2385 /* 2386 * Try to translate the internal hex string to 2387 * human-readable output. If there are any 2388 * problems just use the hex string. 2389 */ 2390 2391 if (str_to_label(propbuf, &new_sl, MAC_LABEL, 2392 L_NO_CORRECTION, NULL) == -1) { 2393 m_label_free(new_sl); 2394 break; 2395 } 2396 2397 if (label_to_str(new_sl, &ascii, M_LABEL, 2398 DEF_NAMES) != 0) { 2399 if (ascii) 2400 free(ascii); 2401 m_label_free(new_sl); 2402 break; 2403 } 2404 m_label_free(new_sl); 2405 2406 (void) strlcpy(propbuf, ascii, proplen); 2407 free(ascii); 2408#else /* !sun */ 2409 propbuf[0] = '\0'; 2410#endif /* !sun */ 2411 } 2412 break; 2413 2414 case ZFS_PROP_GUID: 2415 /* 2416 * GUIDs are stored as numbers, but they are identifiers. 2417 * We don't want them to be pretty printed, because pretty 2418 * printing mangles the ID into a truncated and useless value. 2419 */ 2420 if (get_numeric_property(zhp, prop, src, &source, &val) != 0) 2421 return (-1); 2422 (void) snprintf(propbuf, proplen, "%llu", (u_longlong_t)val); 2423 break; 2424 2425 default: 2426 switch (zfs_prop_get_type(prop)) { 2427 case PROP_TYPE_NUMBER: 2428 if (get_numeric_property(zhp, prop, src, 2429 &source, &val) != 0) 2430 return (-1); 2431 if (literal) 2432 (void) snprintf(propbuf, proplen, "%llu", 2433 (u_longlong_t)val); 2434 else 2435 zfs_nicenum(val, propbuf, proplen); 2436 break; 2437 2438 case PROP_TYPE_STRING: 2439 (void) strlcpy(propbuf, 2440 getprop_string(zhp, prop, &source), proplen); 2441 break; 2442 2443 case PROP_TYPE_INDEX: 2444 if (get_numeric_property(zhp, prop, src, 2445 &source, &val) != 0) 2446 return (-1); 2447 if (zfs_prop_index_to_string(prop, val, &strval) != 0) 2448 return (-1); 2449 (void) strlcpy(propbuf, strval, proplen); 2450 break; 2451 2452 default: 2453 abort(); 2454 } 2455 } 2456 2457 get_source(zhp, src, source, statbuf, statlen); 2458 2459 return (0); 2460} 2461 2462/* 2463 * Utility function to get the given numeric property. Does no validation that 2464 * the given property is the appropriate type; should only be used with 2465 * hard-coded property types. 2466 */ 2467uint64_t 2468zfs_prop_get_int(zfs_handle_t *zhp, zfs_prop_t prop) 2469{ 2470 char *source; 2471 uint64_t val; 2472 2473 (void) get_numeric_property(zhp, prop, NULL, &source, &val); 2474 2475 return (val); 2476} 2477 2478int 2479zfs_prop_set_int(zfs_handle_t *zhp, zfs_prop_t prop, uint64_t val) 2480{ 2481 char buf[64]; 2482 2483 (void) snprintf(buf, sizeof (buf), "%llu", (longlong_t)val); 2484 return (zfs_prop_set(zhp, zfs_prop_to_name(prop), buf)); 2485} 2486 2487/* 2488 * Similar to zfs_prop_get(), but returns the value as an integer. 2489 */ 2490int 2491zfs_prop_get_numeric(zfs_handle_t *zhp, zfs_prop_t prop, uint64_t *value, 2492 zprop_source_t *src, char *statbuf, size_t statlen) 2493{ 2494 char *source; 2495 2496 /* 2497 * Check to see if this property applies to our object 2498 */ 2499 if (!zfs_prop_valid_for_type(prop, zhp->zfs_type)) { 2500 return (zfs_error_fmt(zhp->zfs_hdl, EZFS_PROPTYPE, 2501 dgettext(TEXT_DOMAIN, "cannot get property '%s'"), 2502 zfs_prop_to_name(prop))); 2503 } 2504 2505 if (src) 2506 *src = ZPROP_SRC_NONE; 2507 2508 if (get_numeric_property(zhp, prop, src, &source, value) != 0) 2509 return (-1); 2510 2511 get_source(zhp, src, source, statbuf, statlen); 2512 2513 return (0); 2514} 2515 2516static int 2517idmap_id_to_numeric_domain_rid(uid_t id, boolean_t isuser, 2518 char **domainp, idmap_rid_t *ridp) 2519{ 2520#ifdef sun 2521 idmap_get_handle_t *get_hdl = NULL; 2522 idmap_stat status; 2523 int err = EINVAL; 2524 2525 if (idmap_get_create(&get_hdl) != IDMAP_SUCCESS) 2526 goto out; 2527 2528 if (isuser) { 2529 err = idmap_get_sidbyuid(get_hdl, id, 2530 IDMAP_REQ_FLG_USE_CACHE, domainp, ridp, &status); 2531 } else { 2532 err = idmap_get_sidbygid(get_hdl, id, 2533 IDMAP_REQ_FLG_USE_CACHE, domainp, ridp, &status); 2534 } 2535 if (err == IDMAP_SUCCESS && 2536 idmap_get_mappings(get_hdl) == IDMAP_SUCCESS && 2537 status == IDMAP_SUCCESS) 2538 err = 0; 2539 else 2540 err = EINVAL; 2541out: 2542 if (get_hdl) 2543 idmap_get_destroy(get_hdl); 2544 return (err); 2545#else /* !sun */ 2546 assert(!"invalid code path"); 2547#endif /* !sun */ 2548} 2549 2550/* 2551 * convert the propname into parameters needed by kernel 2552 * Eg: userquota@ahrens -> ZFS_PROP_USERQUOTA, "", 126829 2553 * Eg: userused@matt@domain -> ZFS_PROP_USERUSED, "S-1-123-456", 789 2554 */ 2555static int 2556userquota_propname_decode(const char *propname, boolean_t zoned, 2557 zfs_userquota_prop_t *typep, char *domain, int domainlen, uint64_t *ridp) 2558{ 2559 zfs_userquota_prop_t type; 2560 char *cp, *end; 2561 char *numericsid = NULL; 2562 boolean_t isuser; 2563 2564 domain[0] = '\0'; 2565 2566 /* Figure out the property type ({user|group}{quota|space}) */ 2567 for (type = 0; type < ZFS_NUM_USERQUOTA_PROPS; type++) { 2568 if (strncmp(propname, zfs_userquota_prop_prefixes[type], 2569 strlen(zfs_userquota_prop_prefixes[type])) == 0) 2570 break; 2571 } 2572 if (type == ZFS_NUM_USERQUOTA_PROPS) 2573 return (EINVAL); 2574 *typep = type; 2575 2576 isuser = (type == ZFS_PROP_USERQUOTA || 2577 type == ZFS_PROP_USERUSED); 2578 2579 cp = strchr(propname, '@') + 1; 2580 2581 if (strchr(cp, '@')) { 2582#ifdef sun 2583 /* 2584 * It's a SID name (eg "user@domain") that needs to be 2585 * turned into S-1-domainID-RID. 2586 */ 2587 directory_error_t e; 2588 if (zoned && getzoneid() == GLOBAL_ZONEID) 2589 return (ENOENT); 2590 if (isuser) { 2591 e = directory_sid_from_user_name(NULL, 2592 cp, &numericsid); 2593 } else { 2594 e = directory_sid_from_group_name(NULL, 2595 cp, &numericsid); 2596 } 2597 if (e != NULL) { 2598 directory_error_free(e); 2599 return (ENOENT); 2600 } 2601 if (numericsid == NULL) 2602 return (ENOENT); 2603 cp = numericsid; 2604 /* will be further decoded below */ 2605#else /* !sun */ 2606 return (ENOENT); 2607#endif /* !sun */ 2608 } 2609 2610 if (strncmp(cp, "S-1-", 4) == 0) { 2611 /* It's a numeric SID (eg "S-1-234-567-89") */ 2612 (void) strlcpy(domain, cp, domainlen); 2613 cp = strrchr(domain, '-'); 2614 *cp = '\0'; 2615 cp++; 2616 2617 errno = 0; 2618 *ridp = strtoull(cp, &end, 10); 2619 if (numericsid) { 2620 free(numericsid); 2621 numericsid = NULL; 2622 } 2623 if (errno != 0 || *end != '\0') 2624 return (EINVAL); 2625 } else if (!isdigit(*cp)) { 2626 /* 2627 * It's a user/group name (eg "user") that needs to be 2628 * turned into a uid/gid 2629 */ 2630 if (zoned && getzoneid() == GLOBAL_ZONEID) 2631 return (ENOENT); 2632 if (isuser) { 2633 struct passwd *pw; 2634 pw = getpwnam(cp); 2635 if (pw == NULL) 2636 return (ENOENT); 2637 *ridp = pw->pw_uid; 2638 } else { 2639 struct group *gr; 2640 gr = getgrnam(cp); 2641 if (gr == NULL) 2642 return (ENOENT); 2643 *ridp = gr->gr_gid; 2644 } 2645 } else { 2646 /* It's a user/group ID (eg "12345"). */ 2647 uid_t id = strtoul(cp, &end, 10); 2648 idmap_rid_t rid; 2649 char *mapdomain; 2650 2651 if (*end != '\0') 2652 return (EINVAL); 2653 if (id > MAXUID) { 2654 /* It's an ephemeral ID. */ 2655 if (idmap_id_to_numeric_domain_rid(id, isuser, 2656 &mapdomain, &rid) != 0) 2657 return (ENOENT); 2658 (void) strlcpy(domain, mapdomain, domainlen); 2659 *ridp = rid; 2660 } else { 2661 *ridp = id; 2662 } 2663 } 2664 2665 ASSERT3P(numericsid, ==, NULL); 2666 return (0); 2667} 2668 2669static int 2670zfs_prop_get_userquota_common(zfs_handle_t *zhp, const char *propname, 2671 uint64_t *propvalue, zfs_userquota_prop_t *typep) 2672{ 2673 int err; 2674 zfs_cmd_t zc = { 0 }; 2675 2676 (void) strlcpy(zc.zc_name, zhp->zfs_name, sizeof (zc.zc_name)); 2677 2678 err = userquota_propname_decode(propname, 2679 zfs_prop_get_int(zhp, ZFS_PROP_ZONED), 2680 typep, zc.zc_value, sizeof (zc.zc_value), &zc.zc_guid); 2681 zc.zc_objset_type = *typep; 2682 if (err) 2683 return (err); 2684 2685 err = ioctl(zhp->zfs_hdl->libzfs_fd, ZFS_IOC_USERSPACE_ONE, &zc); 2686 if (err) 2687 return (err); 2688 2689 *propvalue = zc.zc_cookie; 2690 return (0); 2691} 2692 2693int 2694zfs_prop_get_userquota_int(zfs_handle_t *zhp, const char *propname, 2695 uint64_t *propvalue) 2696{ 2697 zfs_userquota_prop_t type; 2698 2699 return (zfs_prop_get_userquota_common(zhp, propname, propvalue, 2700 &type)); 2701} 2702 2703int 2704zfs_prop_get_userquota(zfs_handle_t *zhp, const char *propname, 2705 char *propbuf, int proplen, boolean_t literal) 2706{ 2707 int err; 2708 uint64_t propvalue; 2709 zfs_userquota_prop_t type; 2710 2711 err = zfs_prop_get_userquota_common(zhp, propname, &propvalue, 2712 &type); 2713 2714 if (err) 2715 return (err); 2716 2717 if (literal) { 2718 (void) snprintf(propbuf, proplen, "%llu", propvalue); 2719 } else if (propvalue == 0 && 2720 (type == ZFS_PROP_USERQUOTA || type == ZFS_PROP_GROUPQUOTA)) { 2721 (void) strlcpy(propbuf, "none", proplen); 2722 } else { 2723 zfs_nicenum(propvalue, propbuf, proplen); 2724 } 2725 return (0); 2726} 2727 2728int 2729zfs_prop_get_written_int(zfs_handle_t *zhp, const char *propname, 2730 uint64_t *propvalue) 2731{ 2732 int err; 2733 zfs_cmd_t zc = { 0 }; 2734 const char *snapname; 2735 2736 (void) strlcpy(zc.zc_name, zhp->zfs_name, sizeof (zc.zc_name)); 2737 2738 snapname = strchr(propname, '@') + 1; 2739 if (strchr(snapname, '@')) { 2740 (void) strlcpy(zc.zc_value, snapname, sizeof (zc.zc_value)); 2741 } else { 2742 /* snapname is the short name, append it to zhp's fsname */ 2743 char *cp; 2744 2745 (void) strlcpy(zc.zc_value, zhp->zfs_name, 2746 sizeof (zc.zc_value)); 2747 cp = strchr(zc.zc_value, '@'); 2748 if (cp != NULL) 2749 *cp = '\0'; 2750 (void) strlcat(zc.zc_value, "@", sizeof (zc.zc_value)); 2751 (void) strlcat(zc.zc_value, snapname, sizeof (zc.zc_value)); 2752 } 2753 2754 err = ioctl(zhp->zfs_hdl->libzfs_fd, ZFS_IOC_SPACE_WRITTEN, &zc); 2755 if (err) 2756 return (err); 2757 2758 *propvalue = zc.zc_cookie; 2759 return (0); 2760} 2761 2762int 2763zfs_prop_get_written(zfs_handle_t *zhp, const char *propname, 2764 char *propbuf, int proplen, boolean_t literal) 2765{ 2766 int err; 2767 uint64_t propvalue; 2768 2769 err = zfs_prop_get_written_int(zhp, propname, &propvalue); 2770 2771 if (err) 2772 return (err); 2773 2774 if (literal) { 2775 (void) snprintf(propbuf, proplen, "%llu", propvalue); 2776 } else { 2777 zfs_nicenum(propvalue, propbuf, proplen); 2778 } 2779 return (0); 2780} 2781 2782/* 2783 * Returns the name of the given zfs handle. 2784 */ 2785const char * 2786zfs_get_name(const zfs_handle_t *zhp) 2787{ 2788 return (zhp->zfs_name); 2789} 2790 2791/* 2792 * Returns the type of the given zfs handle. 2793 */ 2794zfs_type_t 2795zfs_get_type(const zfs_handle_t *zhp) 2796{ 2797 return (zhp->zfs_type); 2798} 2799 2800/* 2801 * Is one dataset name a child dataset of another? 2802 * 2803 * Needs to handle these cases: 2804 * Dataset 1 "a/foo" "a/foo" "a/foo" "a/foo" 2805 * Dataset 2 "a/fo" "a/foobar" "a/bar/baz" "a/foo/bar" 2806 * Descendant? No. No. No. Yes. 2807 */ 2808static boolean_t 2809is_descendant(const char *ds1, const char *ds2) 2810{ 2811 size_t d1len = strlen(ds1); 2812 2813 /* ds2 can't be a descendant if it's smaller */ 2814 if (strlen(ds2) < d1len) 2815 return (B_FALSE); 2816 2817 /* otherwise, compare strings and verify that there's a '/' char */ 2818 return (ds2[d1len] == '/' && (strncmp(ds1, ds2, d1len) == 0)); 2819} 2820 2821/* 2822 * Given a complete name, return just the portion that refers to the parent. 2823 * Will return -1 if there is no parent (path is just the name of the 2824 * pool). 2825 */ 2826static int 2827parent_name(const char *path, char *buf, size_t buflen) 2828{ 2829 char *slashp; 2830 2831 (void) strlcpy(buf, path, buflen); 2832 2833 if ((slashp = strrchr(buf, '/')) == NULL) 2834 return (-1); 2835 *slashp = '\0'; 2836 2837 return (0); 2838} 2839 2840/* 2841 * If accept_ancestor is false, then check to make sure that the given path has 2842 * a parent, and that it exists. If accept_ancestor is true, then find the 2843 * closest existing ancestor for the given path. In prefixlen return the 2844 * length of already existing prefix of the given path. We also fetch the 2845 * 'zoned' property, which is used to validate property settings when creating 2846 * new datasets. 2847 */ 2848static int 2849check_parents(libzfs_handle_t *hdl, const char *path, uint64_t *zoned, 2850 boolean_t accept_ancestor, int *prefixlen) 2851{ 2852 zfs_cmd_t zc = { 0 }; 2853 char parent[ZFS_MAXNAMELEN]; 2854 char *slash; 2855 zfs_handle_t *zhp; 2856 char errbuf[1024]; 2857 uint64_t is_zoned; 2858 2859 (void) snprintf(errbuf, sizeof (errbuf), 2860 dgettext(TEXT_DOMAIN, "cannot create '%s'"), path); 2861 2862 /* get parent, and check to see if this is just a pool */ 2863 if (parent_name(path, parent, sizeof (parent)) != 0) { 2864 zfs_error_aux(hdl, dgettext(TEXT_DOMAIN, 2865 "missing dataset name")); 2866 return (zfs_error(hdl, EZFS_INVALIDNAME, errbuf)); 2867 } 2868 2869 /* check to see if the pool exists */ 2870 if ((slash = strchr(parent, '/')) == NULL) 2871 slash = parent + strlen(parent); 2872 (void) strncpy(zc.zc_name, parent, slash - parent); 2873 zc.zc_name[slash - parent] = '\0'; 2874 if (ioctl(hdl->libzfs_fd, ZFS_IOC_OBJSET_STATS, &zc) != 0 && 2875 errno == ENOENT) { 2876 zfs_error_aux(hdl, dgettext(TEXT_DOMAIN, 2877 "no such pool '%s'"), zc.zc_name); 2878 return (zfs_error(hdl, EZFS_NOENT, errbuf)); 2879 } 2880 2881 /* check to see if the parent dataset exists */ 2882 while ((zhp = make_dataset_handle(hdl, parent)) == NULL) { 2883 if (errno == ENOENT && accept_ancestor) { 2884 /* 2885 * Go deeper to find an ancestor, give up on top level. 2886 */ 2887 if (parent_name(parent, parent, sizeof (parent)) != 0) { 2888 zfs_error_aux(hdl, dgettext(TEXT_DOMAIN, 2889 "no such pool '%s'"), zc.zc_name); 2890 return (zfs_error(hdl, EZFS_NOENT, errbuf)); 2891 } 2892 } else if (errno == ENOENT) { 2893 zfs_error_aux(hdl, dgettext(TEXT_DOMAIN, 2894 "parent does not exist")); 2895 return (zfs_error(hdl, EZFS_NOENT, errbuf)); 2896 } else 2897 return (zfs_standard_error(hdl, errno, errbuf)); 2898 } 2899 2900 is_zoned = zfs_prop_get_int(zhp, ZFS_PROP_ZONED); 2901 if (zoned != NULL) 2902 *zoned = is_zoned; 2903 2904 /* we are in a non-global zone, but parent is in the global zone */ 2905 if (getzoneid() != GLOBAL_ZONEID && !is_zoned) { 2906 (void) zfs_standard_error(hdl, EPERM, errbuf); 2907 zfs_close(zhp); 2908 return (-1); 2909 } 2910 2911 /* make sure parent is a filesystem */ 2912 if (zfs_get_type(zhp) != ZFS_TYPE_FILESYSTEM) { 2913 zfs_error_aux(hdl, dgettext(TEXT_DOMAIN, 2914 "parent is not a filesystem")); 2915 (void) zfs_error(hdl, EZFS_BADTYPE, errbuf); 2916 zfs_close(zhp); 2917 return (-1); 2918 } 2919 2920 zfs_close(zhp); 2921 if (prefixlen != NULL) 2922 *prefixlen = strlen(parent); 2923 return (0); 2924} 2925 2926/* 2927 * Finds whether the dataset of the given type(s) exists. 2928 */ 2929boolean_t 2930zfs_dataset_exists(libzfs_handle_t *hdl, const char *path, zfs_type_t types) 2931{ 2932 zfs_handle_t *zhp; 2933 2934 if (!zfs_validate_name(hdl, path, types, B_FALSE)) 2935 return (B_FALSE); 2936 2937 /* 2938 * Try to get stats for the dataset, which will tell us if it exists. 2939 */ 2940 if ((zhp = make_dataset_handle(hdl, path)) != NULL) { 2941 int ds_type = zhp->zfs_type; 2942 2943 zfs_close(zhp); 2944 if (types & ds_type) 2945 return (B_TRUE); 2946 } 2947 return (B_FALSE); 2948} 2949 2950/* 2951 * Given a path to 'target', create all the ancestors between 2952 * the prefixlen portion of the path, and the target itself. 2953 * Fail if the initial prefixlen-ancestor does not already exist. 2954 */ 2955int 2956create_parents(libzfs_handle_t *hdl, char *target, int prefixlen) 2957{ 2958 zfs_handle_t *h; 2959 char *cp; 2960 const char *opname; 2961 2962 /* make sure prefix exists */ 2963 cp = target + prefixlen; 2964 if (*cp != '/') { 2965 assert(strchr(cp, '/') == NULL); 2966 h = zfs_open(hdl, target, ZFS_TYPE_FILESYSTEM); 2967 } else { 2968 *cp = '\0'; 2969 h = zfs_open(hdl, target, ZFS_TYPE_FILESYSTEM); 2970 *cp = '/'; 2971 } 2972 if (h == NULL) 2973 return (-1); 2974 zfs_close(h); 2975 2976 /* 2977 * Attempt to create, mount, and share any ancestor filesystems, 2978 * up to the prefixlen-long one. 2979 */ 2980 for (cp = target + prefixlen + 1; 2981 cp = strchr(cp, '/'); *cp = '/', cp++) { 2982 2983 *cp = '\0'; 2984 2985 h = make_dataset_handle(hdl, target); 2986 if (h) { 2987 /* it already exists, nothing to do here */ 2988 zfs_close(h); 2989 continue; 2990 } 2991 2992 if (zfs_create(hdl, target, ZFS_TYPE_FILESYSTEM, 2993 NULL) != 0) { 2994 opname = dgettext(TEXT_DOMAIN, "create"); 2995 goto ancestorerr; 2996 } 2997 2998 h = zfs_open(hdl, target, ZFS_TYPE_FILESYSTEM); 2999 if (h == NULL) { 3000 opname = dgettext(TEXT_DOMAIN, "open"); 3001 goto ancestorerr; 3002 } 3003 3004 if (zfs_mount(h, NULL, 0) != 0) { 3005 opname = dgettext(TEXT_DOMAIN, "mount"); 3006 goto ancestorerr; 3007 } 3008 3009 if (zfs_share(h) != 0) { 3010 opname = dgettext(TEXT_DOMAIN, "share"); 3011 goto ancestorerr; 3012 } 3013 3014 zfs_close(h); 3015 } 3016 3017 return (0); 3018 3019ancestorerr: 3020 zfs_error_aux(hdl, dgettext(TEXT_DOMAIN, 3021 "failed to %s ancestor '%s'"), opname, target); 3022 return (-1); 3023} 3024 3025/* 3026 * Creates non-existing ancestors of the given path. 3027 */ 3028int 3029zfs_create_ancestors(libzfs_handle_t *hdl, const char *path) 3030{ 3031 int prefix; 3032 char *path_copy; 3033 int rc; 3034 3035 if (check_parents(hdl, path, NULL, B_TRUE, &prefix) != 0) 3036 return (-1); 3037 3038 if ((path_copy = strdup(path)) != NULL) { 3039 rc = create_parents(hdl, path_copy, prefix); 3040 free(path_copy); 3041 } 3042 if (path_copy == NULL || rc != 0) 3043 return (-1); 3044 3045 return (0); 3046} 3047 3048/* 3049 * Create a new filesystem or volume. 3050 */ 3051int 3052zfs_create(libzfs_handle_t *hdl, const char *path, zfs_type_t type, 3053 nvlist_t *props) 3054{ 3055 int ret; 3056 uint64_t size = 0; 3057 uint64_t blocksize = zfs_prop_default_numeric(ZFS_PROP_VOLBLOCKSIZE); 3058 char errbuf[1024]; 3059 uint64_t zoned; 3060 dmu_objset_type_t ost; 3061 3062 (void) snprintf(errbuf, sizeof (errbuf), dgettext(TEXT_DOMAIN, 3063 "cannot create '%s'"), path); 3064 3065 /* validate the path, taking care to note the extended error message */ 3066 if (!zfs_validate_name(hdl, path, type, B_TRUE)) 3067 return (zfs_error(hdl, EZFS_INVALIDNAME, errbuf)); 3068 3069 /* validate parents exist */ 3070 if (check_parents(hdl, path, &zoned, B_FALSE, NULL) != 0) 3071 return (-1); 3072 3073 /* 3074 * The failure modes when creating a dataset of a different type over 3075 * one that already exists is a little strange. In particular, if you 3076 * try to create a dataset on top of an existing dataset, the ioctl() 3077 * will return ENOENT, not EEXIST. To prevent this from happening, we 3078 * first try to see if the dataset exists. 3079 */ 3080 if (zfs_dataset_exists(hdl, path, ZFS_TYPE_DATASET)) { 3081 zfs_error_aux(hdl, dgettext(TEXT_DOMAIN, 3082 "dataset already exists")); 3083 return (zfs_error(hdl, EZFS_EXISTS, errbuf)); 3084 } 3085 3086 if (type == ZFS_TYPE_VOLUME) 3087 ost = DMU_OST_ZVOL; 3088 else 3089 ost = DMU_OST_ZFS; 3090 3091 if (props && (props = zfs_valid_proplist(hdl, type, props, 3092 zoned, NULL, errbuf)) == 0) 3093 return (-1); 3094 3095 if (type == ZFS_TYPE_VOLUME) { 3096 /* 3097 * If we are creating a volume, the size and block size must 3098 * satisfy a few restraints. First, the blocksize must be a 3099 * valid block size between SPA_{MIN,MAX}BLOCKSIZE. Second, the 3100 * volsize must be a multiple of the block size, and cannot be 3101 * zero. 3102 */ 3103 if (props == NULL || nvlist_lookup_uint64(props, 3104 zfs_prop_to_name(ZFS_PROP_VOLSIZE), &size) != 0) { 3105 nvlist_free(props); 3106 zfs_error_aux(hdl, dgettext(TEXT_DOMAIN, 3107 "missing volume size")); 3108 return (zfs_error(hdl, EZFS_BADPROP, errbuf)); 3109 } 3110 3111 if ((ret = nvlist_lookup_uint64(props, 3112 zfs_prop_to_name(ZFS_PROP_VOLBLOCKSIZE), 3113 &blocksize)) != 0) { 3114 if (ret == ENOENT) { 3115 blocksize = zfs_prop_default_numeric( 3116 ZFS_PROP_VOLBLOCKSIZE); 3117 } else { 3118 nvlist_free(props); 3119 zfs_error_aux(hdl, dgettext(TEXT_DOMAIN, 3120 "missing volume block size")); 3121 return (zfs_error(hdl, EZFS_BADPROP, errbuf)); 3122 } 3123 } 3124 3125 if (size == 0) { 3126 nvlist_free(props); 3127 zfs_error_aux(hdl, dgettext(TEXT_DOMAIN, 3128 "volume size cannot be zero")); 3129 return (zfs_error(hdl, EZFS_BADPROP, errbuf)); 3130 } 3131 3132 if (size % blocksize != 0) { 3133 nvlist_free(props); 3134 zfs_error_aux(hdl, dgettext(TEXT_DOMAIN, 3135 "volume size must be a multiple of volume block " 3136 "size")); 3137 return (zfs_error(hdl, EZFS_BADPROP, errbuf)); 3138 } 3139 } 3140 3141 /* create the dataset */ 3142 ret = lzc_create(path, ost, props); 3143 nvlist_free(props); 3144 3145 /* check for failure */ 3146 if (ret != 0) { 3147 char parent[ZFS_MAXNAMELEN]; 3148 (void) parent_name(path, parent, sizeof (parent)); 3149 3150 switch (errno) { 3151 case ENOENT: 3152 zfs_error_aux(hdl, dgettext(TEXT_DOMAIN, 3153 "no such parent '%s'"), parent); 3154 return (zfs_error(hdl, EZFS_NOENT, errbuf)); 3155 3156 case EINVAL: 3157 zfs_error_aux(hdl, dgettext(TEXT_DOMAIN, 3158 "parent '%s' is not a filesystem"), parent); 3159 return (zfs_error(hdl, EZFS_BADTYPE, errbuf)); 3160 3161 case EDOM: 3162 zfs_error_aux(hdl, dgettext(TEXT_DOMAIN, 3163 "volume block size must be power of 2 from " 3164 "%u to %uk"), 3165 (uint_t)SPA_MINBLOCKSIZE, 3166 (uint_t)SPA_MAXBLOCKSIZE >> 10); 3167 3168 return (zfs_error(hdl, EZFS_BADPROP, errbuf)); 3169 3170 case ENOTSUP: 3171 zfs_error_aux(hdl, dgettext(TEXT_DOMAIN, 3172 "pool must be upgraded to set this " 3173 "property or value")); 3174 return (zfs_error(hdl, EZFS_BADVERSION, errbuf)); 3175#ifdef _ILP32 3176 case EOVERFLOW: 3177 /* 3178 * This platform can't address a volume this big. 3179 */ 3180 if (type == ZFS_TYPE_VOLUME) 3181 return (zfs_error(hdl, EZFS_VOLTOOBIG, 3182 errbuf)); 3183#endif 3184 /* FALLTHROUGH */ 3185 default: 3186 return (zfs_standard_error(hdl, errno, errbuf)); 3187 } 3188 } 3189 3190 return (0); 3191} 3192 3193/* 3194 * Destroys the given dataset. The caller must make sure that the filesystem 3195 * isn't mounted, and that there are no active dependents. If the file system 3196 * does not exist this function does nothing. 3197 */ 3198int 3199zfs_destroy(zfs_handle_t *zhp, boolean_t defer) 3200{ 3201 zfs_cmd_t zc = { 0 }; 3202 3203 if (zhp->zfs_type == ZFS_TYPE_BOOKMARK) { 3204 nvlist_t *nv = fnvlist_alloc(); 3205 fnvlist_add_boolean(nv, zhp->zfs_name); 3206 int error = lzc_destroy_bookmarks(nv, NULL); 3207 fnvlist_free(nv); 3208 if (error != 0) { 3209 return (zfs_standard_error_fmt(zhp->zfs_hdl, errno, 3210 dgettext(TEXT_DOMAIN, "cannot destroy '%s'"), 3211 zhp->zfs_name)); 3212 } 3213 return (0); 3214 } 3215 3216 (void) strlcpy(zc.zc_name, zhp->zfs_name, sizeof (zc.zc_name)); 3217 3218 if (ZFS_IS_VOLUME(zhp)) { 3219 zc.zc_objset_type = DMU_OST_ZVOL; 3220 } else { 3221 zc.zc_objset_type = DMU_OST_ZFS; 3222 } 3223 3224 zc.zc_defer_destroy = defer; 3225 if (zfs_ioctl(zhp->zfs_hdl, ZFS_IOC_DESTROY, &zc) != 0 && 3226 errno != ENOENT) { 3227 return (zfs_standard_error_fmt(zhp->zfs_hdl, errno, 3228 dgettext(TEXT_DOMAIN, "cannot destroy '%s'"), 3229 zhp->zfs_name)); 3230 } 3231 3232 remove_mountpoint(zhp); 3233 3234 return (0); 3235} 3236 3237struct destroydata { 3238 nvlist_t *nvl; 3239 const char *snapname; 3240}; 3241 3242static int 3243zfs_check_snap_cb(zfs_handle_t *zhp, void *arg) 3244{ 3245 struct destroydata *dd = arg; 3246 char name[ZFS_MAXNAMELEN]; 3247 int rv = 0; 3248 3249 (void) snprintf(name, sizeof (name), 3250 "%s@%s", zhp->zfs_name, dd->snapname); 3251 3252 if (lzc_exists(name)) 3253 verify(nvlist_add_boolean(dd->nvl, name) == 0); 3254 3255 rv = zfs_iter_filesystems(zhp, zfs_check_snap_cb, dd); 3256 zfs_close(zhp); 3257 return (rv); 3258} 3259 3260/* 3261 * Destroys all snapshots with the given name in zhp & descendants. 3262 */ 3263int 3264zfs_destroy_snaps(zfs_handle_t *zhp, char *snapname, boolean_t defer) 3265{ 3266 int ret; 3267 struct destroydata dd = { 0 }; 3268 3269 dd.snapname = snapname; 3270 verify(nvlist_alloc(&dd.nvl, NV_UNIQUE_NAME, 0) == 0); 3271 (void) zfs_check_snap_cb(zfs_handle_dup(zhp), &dd); 3272 3273 if (nvlist_empty(dd.nvl)) { 3274 ret = zfs_standard_error_fmt(zhp->zfs_hdl, ENOENT, 3275 dgettext(TEXT_DOMAIN, "cannot destroy '%s@%s'"), 3276 zhp->zfs_name, snapname); 3277 } else { 3278 ret = zfs_destroy_snaps_nvl(zhp->zfs_hdl, dd.nvl, defer); 3279 } 3280 nvlist_free(dd.nvl); 3281 return (ret); 3282} 3283 3284/* 3285 * Destroys all the snapshots named in the nvlist. 3286 */ 3287int 3288zfs_destroy_snaps_nvl(libzfs_handle_t *hdl, nvlist_t *snaps, boolean_t defer) 3289{ 3290 int ret; 3291 nvlist_t *errlist; 3292 3293 ret = lzc_destroy_snaps(snaps, defer, &errlist); 3294 3295 if (ret == 0) 3296 return (0); 3297 3298 if (nvlist_empty(errlist)) { 3299 char errbuf[1024]; 3300 (void) snprintf(errbuf, sizeof (errbuf), 3301 dgettext(TEXT_DOMAIN, "cannot destroy snapshots")); 3302 3303 ret = zfs_standard_error(hdl, ret, errbuf); 3304 } 3305 for (nvpair_t *pair = nvlist_next_nvpair(errlist, NULL); 3306 pair != NULL; pair = nvlist_next_nvpair(errlist, pair)) { 3307 char errbuf[1024]; 3308 (void) snprintf(errbuf, sizeof (errbuf), 3309 dgettext(TEXT_DOMAIN, "cannot destroy snapshot %s"), 3310 nvpair_name(pair)); 3311 3312 switch (fnvpair_value_int32(pair)) { 3313 case EEXIST: 3314 zfs_error_aux(hdl, 3315 dgettext(TEXT_DOMAIN, "snapshot is cloned")); 3316 ret = zfs_error(hdl, EZFS_EXISTS, errbuf); 3317 break; 3318 default: 3319 ret = zfs_standard_error(hdl, errno, errbuf); 3320 break; 3321 } 3322 } 3323 3324 return (ret); 3325} 3326 3327/* 3328 * Clones the given dataset. The target must be of the same type as the source. 3329 */ 3330int 3331zfs_clone(zfs_handle_t *zhp, const char *target, nvlist_t *props) 3332{ 3333 char parent[ZFS_MAXNAMELEN]; 3334 int ret; 3335 char errbuf[1024]; 3336 libzfs_handle_t *hdl = zhp->zfs_hdl; 3337 uint64_t zoned; 3338 3339 assert(zhp->zfs_type == ZFS_TYPE_SNAPSHOT); 3340 3341 (void) snprintf(errbuf, sizeof (errbuf), dgettext(TEXT_DOMAIN, 3342 "cannot create '%s'"), target); 3343 3344 /* validate the target/clone name */ 3345 if (!zfs_validate_name(hdl, target, ZFS_TYPE_FILESYSTEM, B_TRUE)) 3346 return (zfs_error(hdl, EZFS_INVALIDNAME, errbuf)); 3347 3348 /* validate parents exist */ 3349 if (check_parents(hdl, target, &zoned, B_FALSE, NULL) != 0) 3350 return (-1); 3351 3352 (void) parent_name(target, parent, sizeof (parent)); 3353 3354 /* do the clone */ 3355 3356 if (props) { 3357 zfs_type_t type; 3358 if (ZFS_IS_VOLUME(zhp)) { 3359 type = ZFS_TYPE_VOLUME; 3360 } else { 3361 type = ZFS_TYPE_FILESYSTEM; 3362 } 3363 if ((props = zfs_valid_proplist(hdl, type, props, zoned, 3364 zhp, errbuf)) == NULL) 3365 return (-1); 3366 } 3367 3368 ret = lzc_clone(target, zhp->zfs_name, props); 3369 nvlist_free(props); 3370 3371 if (ret != 0) { 3372 switch (errno) { 3373 3374 case ENOENT: 3375 /* 3376 * The parent doesn't exist. We should have caught this 3377 * above, but there may a race condition that has since 3378 * destroyed the parent. 3379 * 3380 * At this point, we don't know whether it's the source 3381 * that doesn't exist anymore, or whether the target 3382 * dataset doesn't exist. 3383 */ 3384 zfs_error_aux(zhp->zfs_hdl, dgettext(TEXT_DOMAIN, 3385 "no such parent '%s'"), parent); 3386 return (zfs_error(zhp->zfs_hdl, EZFS_NOENT, errbuf)); 3387 3388 case EXDEV: 3389 zfs_error_aux(zhp->zfs_hdl, dgettext(TEXT_DOMAIN, 3390 "source and target pools differ")); 3391 return (zfs_error(zhp->zfs_hdl, EZFS_CROSSTARGET, 3392 errbuf)); 3393 3394 default: 3395 return (zfs_standard_error(zhp->zfs_hdl, errno, 3396 errbuf)); 3397 } 3398 } 3399 3400 return (ret); 3401} 3402 3403/* 3404 * Promotes the given clone fs to be the clone parent. 3405 */ 3406int 3407zfs_promote(zfs_handle_t *zhp) 3408{ 3409 libzfs_handle_t *hdl = zhp->zfs_hdl; 3410 zfs_cmd_t zc = { 0 }; 3411 char parent[MAXPATHLEN]; 3412 int ret; 3413 char errbuf[1024]; 3414 3415 (void) snprintf(errbuf, sizeof (errbuf), dgettext(TEXT_DOMAIN, 3416 "cannot promote '%s'"), zhp->zfs_name); 3417 3418 if (zhp->zfs_type == ZFS_TYPE_SNAPSHOT) { 3419 zfs_error_aux(hdl, dgettext(TEXT_DOMAIN, 3420 "snapshots can not be promoted")); 3421 return (zfs_error(hdl, EZFS_BADTYPE, errbuf)); 3422 } 3423 3424 (void) strlcpy(parent, zhp->zfs_dmustats.dds_origin, sizeof (parent)); 3425 if (parent[0] == '\0') { 3426 zfs_error_aux(hdl, dgettext(TEXT_DOMAIN, 3427 "not a cloned filesystem")); 3428 return (zfs_error(hdl, EZFS_BADTYPE, errbuf)); 3429 } 3430 3431 (void) strlcpy(zc.zc_value, zhp->zfs_dmustats.dds_origin, 3432 sizeof (zc.zc_value)); 3433 (void) strlcpy(zc.zc_name, zhp->zfs_name, sizeof (zc.zc_name)); 3434 ret = zfs_ioctl(hdl, ZFS_IOC_PROMOTE, &zc); 3435 3436 if (ret != 0) { 3437 int save_errno = errno; 3438 3439 switch (save_errno) { 3440 case EEXIST: 3441 /* There is a conflicting snapshot name. */ 3442 zfs_error_aux(hdl, dgettext(TEXT_DOMAIN, 3443 "conflicting snapshot '%s' from parent '%s'"), 3444 zc.zc_string, parent); 3445 return (zfs_error(hdl, EZFS_EXISTS, errbuf)); 3446 3447 default: 3448 return (zfs_standard_error(hdl, save_errno, errbuf)); 3449 } 3450 } 3451 return (ret); 3452} 3453 3454typedef struct snapdata { 3455 nvlist_t *sd_nvl; 3456 const char *sd_snapname; 3457} snapdata_t; 3458 3459static int 3460zfs_snapshot_cb(zfs_handle_t *zhp, void *arg) 3461{ 3462 snapdata_t *sd = arg; 3463 char name[ZFS_MAXNAMELEN]; 3464 int rv = 0; 3465 3466 if (zfs_prop_get_int(zhp, ZFS_PROP_INCONSISTENT) == 0) { 3467 (void) snprintf(name, sizeof (name), 3468 "%s@%s", zfs_get_name(zhp), sd->sd_snapname); 3469 3470 fnvlist_add_boolean(sd->sd_nvl, name); 3471 3472 rv = zfs_iter_filesystems(zhp, zfs_snapshot_cb, sd); 3473 } 3474 zfs_close(zhp); 3475 3476 return (rv); 3477} 3478 3479/* 3480 * Creates snapshots. The keys in the snaps nvlist are the snapshots to be 3481 * created. 3482 */ 3483int 3484zfs_snapshot_nvl(libzfs_handle_t *hdl, nvlist_t *snaps, nvlist_t *props) 3485{ 3486 int ret; 3487 char errbuf[1024]; 3488 nvpair_t *elem; 3489 nvlist_t *errors; 3490 3491 (void) snprintf(errbuf, sizeof (errbuf), dgettext(TEXT_DOMAIN, 3492 "cannot create snapshots ")); 3493 3494 elem = NULL; 3495 while ((elem = nvlist_next_nvpair(snaps, elem)) != NULL) { 3496 const char *snapname = nvpair_name(elem); 3497 3498 /* validate the target name */ 3499 if (!zfs_validate_name(hdl, snapname, ZFS_TYPE_SNAPSHOT, 3500 B_TRUE)) { 3501 (void) snprintf(errbuf, sizeof (errbuf), 3502 dgettext(TEXT_DOMAIN, 3503 "cannot create snapshot '%s'"), snapname); 3504 return (zfs_error(hdl, EZFS_INVALIDNAME, errbuf)); 3505 } 3506 } 3507 3508 if (props != NULL && 3509 (props = zfs_valid_proplist(hdl, ZFS_TYPE_SNAPSHOT, 3510 props, B_FALSE, NULL, errbuf)) == NULL) { 3511 return (-1); 3512 } 3513 3514 ret = lzc_snapshot(snaps, props, &errors); 3515 3516 if (ret != 0) { 3517 boolean_t printed = B_FALSE; 3518 for (elem = nvlist_next_nvpair(errors, NULL); 3519 elem != NULL; 3520 elem = nvlist_next_nvpair(errors, elem)) { 3521 (void) snprintf(errbuf, sizeof (errbuf), 3522 dgettext(TEXT_DOMAIN, 3523 "cannot create snapshot '%s'"), nvpair_name(elem)); 3524 (void) zfs_standard_error(hdl, 3525 fnvpair_value_int32(elem), errbuf); 3526 printed = B_TRUE; 3527 } 3528 if (!printed) { 3529 switch (ret) { 3530 case EXDEV: 3531 zfs_error_aux(hdl, dgettext(TEXT_DOMAIN, 3532 "multiple snapshots of same " 3533 "fs not allowed")); 3534 (void) zfs_error(hdl, EZFS_EXISTS, errbuf); 3535 3536 break; 3537 default: 3538 (void) zfs_standard_error(hdl, ret, errbuf); 3539 } 3540 } 3541 } 3542 3543 nvlist_free(props); 3544 nvlist_free(errors); 3545 return (ret); 3546} 3547 3548int 3549zfs_snapshot(libzfs_handle_t *hdl, const char *path, boolean_t recursive, 3550 nvlist_t *props) 3551{ 3552 int ret; 3553 snapdata_t sd = { 0 }; 3554 char fsname[ZFS_MAXNAMELEN]; 3555 char *cp; 3556 zfs_handle_t *zhp; 3557 char errbuf[1024]; 3558 3559 (void) snprintf(errbuf, sizeof (errbuf), dgettext(TEXT_DOMAIN, 3560 "cannot snapshot %s"), path); 3561 3562 if (!zfs_validate_name(hdl, path, ZFS_TYPE_SNAPSHOT, B_TRUE)) 3563 return (zfs_error(hdl, EZFS_INVALIDNAME, errbuf)); 3564 3565 (void) strlcpy(fsname, path, sizeof (fsname)); 3566 cp = strchr(fsname, '@'); 3567 *cp = '\0'; 3568 sd.sd_snapname = cp + 1; 3569 3570 if ((zhp = zfs_open(hdl, fsname, ZFS_TYPE_FILESYSTEM | 3571 ZFS_TYPE_VOLUME)) == NULL) { 3572 return (-1); 3573 } 3574 3575 verify(nvlist_alloc(&sd.sd_nvl, NV_UNIQUE_NAME, 0) == 0); 3576 if (recursive) { 3577 (void) zfs_snapshot_cb(zfs_handle_dup(zhp), &sd); 3578 } else { 3579 fnvlist_add_boolean(sd.sd_nvl, path); 3580 } 3581 3582 ret = zfs_snapshot_nvl(hdl, sd.sd_nvl, props); 3583 nvlist_free(sd.sd_nvl); 3584 zfs_close(zhp); 3585 return (ret); 3586} 3587 3588/* 3589 * Destroy any more recent snapshots. We invoke this callback on any dependents 3590 * of the snapshot first. If the 'cb_dependent' member is non-zero, then this 3591 * is a dependent and we should just destroy it without checking the transaction 3592 * group. 3593 */ 3594typedef struct rollback_data { 3595 const char *cb_target; /* the snapshot */ 3596 uint64_t cb_create; /* creation time reference */ 3597 boolean_t cb_error; 3598 boolean_t cb_force; 3599} rollback_data_t; 3600 3601static int 3602rollback_destroy_dependent(zfs_handle_t *zhp, void *data) 3603{ 3604 rollback_data_t *cbp = data; 3605 prop_changelist_t *clp; 3606 3607 /* We must destroy this clone; first unmount it */ 3608 clp = changelist_gather(zhp, ZFS_PROP_NAME, 0, 3609 cbp->cb_force ? MS_FORCE: 0); 3610 if (clp == NULL || changelist_prefix(clp) != 0) { 3611 cbp->cb_error = B_TRUE; 3612 zfs_close(zhp); 3613 return (0); 3614 } 3615 if (zfs_destroy(zhp, B_FALSE) != 0) 3616 cbp->cb_error = B_TRUE; 3617 else 3618 changelist_remove(clp, zhp->zfs_name); 3619 (void) changelist_postfix(clp); 3620 changelist_free(clp); 3621 3622 zfs_close(zhp); 3623 return (0); 3624} 3625 3626static int 3627rollback_destroy(zfs_handle_t *zhp, void *data) 3628{ 3629 rollback_data_t *cbp = data; 3630 3631 if (zfs_prop_get_int(zhp, ZFS_PROP_CREATETXG) > cbp->cb_create) { 3632 cbp->cb_error |= zfs_iter_dependents(zhp, B_FALSE, 3633 rollback_destroy_dependent, cbp); 3634 3635 cbp->cb_error |= zfs_destroy(zhp, B_FALSE); 3636 } 3637 3638 zfs_close(zhp); 3639 return (0); 3640} 3641 3642/* 3643 * Given a dataset, rollback to a specific snapshot, discarding any 3644 * data changes since then and making it the active dataset. 3645 * 3646 * Any snapshots and bookmarks more recent than the target are 3647 * destroyed, along with their dependents (i.e. clones). 3648 */ 3649int 3650zfs_rollback(zfs_handle_t *zhp, zfs_handle_t *snap, boolean_t force) 3651{ 3652 rollback_data_t cb = { 0 }; 3653 int err; 3654 boolean_t restore_resv = 0; 3655 uint64_t old_volsize, new_volsize; 3656 zfs_prop_t resv_prop; 3657 3658 assert(zhp->zfs_type == ZFS_TYPE_FILESYSTEM || 3659 zhp->zfs_type == ZFS_TYPE_VOLUME); 3660 3661 /* 3662 * Destroy all recent snapshots and their dependents. 3663 */ 3664 cb.cb_force = force; 3665 cb.cb_target = snap->zfs_name; 3666 cb.cb_create = zfs_prop_get_int(snap, ZFS_PROP_CREATETXG); 3667 (void) zfs_iter_snapshots(zhp, B_FALSE, rollback_destroy, &cb); 3668 (void) zfs_iter_bookmarks(zhp, rollback_destroy, &cb); 3669 3670 if (cb.cb_error) 3671 return (-1); 3672 3673 /* 3674 * Now that we have verified that the snapshot is the latest, 3675 * rollback to the given snapshot. 3676 */ 3677 3678 if (zhp->zfs_type == ZFS_TYPE_VOLUME) { 3679 if (zfs_which_resv_prop(zhp, &resv_prop) < 0) 3680 return (-1); 3681 old_volsize = zfs_prop_get_int(zhp, ZFS_PROP_VOLSIZE); 3682 restore_resv = 3683 (old_volsize == zfs_prop_get_int(zhp, resv_prop)); 3684 } 3685 3686 /* 3687 * We rely on zfs_iter_children() to verify that there are no 3688 * newer snapshots for the given dataset. Therefore, we can 3689 * simply pass the name on to the ioctl() call. There is still 3690 * an unlikely race condition where the user has taken a 3691 * snapshot since we verified that this was the most recent. 3692 */ 3693 err = lzc_rollback(zhp->zfs_name, NULL, 0); 3694 if (err != 0) { 3695 (void) zfs_standard_error_fmt(zhp->zfs_hdl, errno, 3696 dgettext(TEXT_DOMAIN, "cannot rollback '%s'"), 3697 zhp->zfs_name); 3698 return (err); 3699 } 3700 3701 /* 3702 * For volumes, if the pre-rollback volsize matched the pre- 3703 * rollback reservation and the volsize has changed then set 3704 * the reservation property to the post-rollback volsize. 3705 * Make a new handle since the rollback closed the dataset. 3706 */ 3707 if ((zhp->zfs_type == ZFS_TYPE_VOLUME) && 3708 (zhp = make_dataset_handle(zhp->zfs_hdl, zhp->zfs_name))) { 3709 if (restore_resv) { 3710 new_volsize = zfs_prop_get_int(zhp, ZFS_PROP_VOLSIZE); 3711 if (old_volsize != new_volsize) 3712 err = zfs_prop_set_int(zhp, resv_prop, 3713 new_volsize); 3714 } 3715 zfs_close(zhp); 3716 } 3717 return (err); 3718} 3719 3720/* 3721 * Renames the given dataset. 3722 */ 3723int 3724zfs_rename(zfs_handle_t *zhp, const char *source, const char *target, 3725 renameflags_t flags) 3726{ 3727 int ret; 3728 zfs_cmd_t zc = { 0 }; 3729 char *delim; 3730 prop_changelist_t *cl = NULL; 3731 zfs_handle_t *zhrp = NULL; 3732 char *parentname = NULL; 3733 char parent[ZFS_MAXNAMELEN]; 3734 char property[ZFS_MAXPROPLEN]; 3735 libzfs_handle_t *hdl = zhp->zfs_hdl; 3736 char errbuf[1024]; 3737 3738 /* if we have the same exact name, just return success */ 3739 if (strcmp(zhp->zfs_name, target) == 0) 3740 return (0); 3741 3742 (void) snprintf(errbuf, sizeof (errbuf), dgettext(TEXT_DOMAIN, 3743 "cannot rename to '%s'"), target); 3744 3745 if (source != NULL) { 3746 /* 3747 * This is recursive snapshots rename, put snapshot name 3748 * (that might not exist) into zfs_name. 3749 */ 3750 assert(flags.recurse); 3751 3752 (void) strlcat(zhp->zfs_name, "@", sizeof(zhp->zfs_name)); 3753 (void) strlcat(zhp->zfs_name, source, sizeof(zhp->zfs_name)); 3754 zhp->zfs_type = ZFS_TYPE_SNAPSHOT; 3755 } 3756 3757 /* 3758 * Make sure the target name is valid 3759 */ 3760 if (zhp->zfs_type == ZFS_TYPE_SNAPSHOT) { 3761 if ((strchr(target, '@') == NULL) || 3762 *target == '@') { 3763 /* 3764 * Snapshot target name is abbreviated, 3765 * reconstruct full dataset name 3766 */ 3767 (void) strlcpy(parent, zhp->zfs_name, 3768 sizeof (parent)); 3769 delim = strchr(parent, '@'); 3770 if (strchr(target, '@') == NULL) 3771 *(++delim) = '\0'; 3772 else 3773 *delim = '\0'; 3774 (void) strlcat(parent, target, sizeof (parent)); 3775 target = parent; 3776 } else { 3777 /* 3778 * Make sure we're renaming within the same dataset. 3779 */ 3780 delim = strchr(target, '@'); 3781 if (strncmp(zhp->zfs_name, target, delim - target) 3782 != 0 || zhp->zfs_name[delim - target] != '@') { 3783 zfs_error_aux(hdl, dgettext(TEXT_DOMAIN, 3784 "snapshots must be part of same " 3785 "dataset")); 3786 return (zfs_error(hdl, EZFS_CROSSTARGET, 3787 errbuf)); 3788 } 3789 } 3790 if (!zfs_validate_name(hdl, target, zhp->zfs_type, B_TRUE)) 3791 return (zfs_error(hdl, EZFS_INVALIDNAME, errbuf)); 3792 } else { 3793 if (flags.recurse) { 3794 zfs_error_aux(hdl, dgettext(TEXT_DOMAIN, 3795 "recursive rename must be a snapshot")); 3796 return (zfs_error(hdl, EZFS_BADTYPE, errbuf)); 3797 } 3798 3799 if (!zfs_validate_name(hdl, target, zhp->zfs_type, B_TRUE)) 3800 return (zfs_error(hdl, EZFS_INVALIDNAME, errbuf)); 3801 3802 /* validate parents */ 3803 if (check_parents(hdl, target, NULL, B_FALSE, NULL) != 0) 3804 return (-1); 3805 3806 /* make sure we're in the same pool */ 3807 verify((delim = strchr(target, '/')) != NULL); 3808 if (strncmp(zhp->zfs_name, target, delim - target) != 0 || 3809 zhp->zfs_name[delim - target] != '/') { 3810 zfs_error_aux(hdl, dgettext(TEXT_DOMAIN, 3811 "datasets must be within same pool")); 3812 return (zfs_error(hdl, EZFS_CROSSTARGET, errbuf)); 3813 } 3814 3815 /* new name cannot be a child of the current dataset name */ 3816 if (is_descendant(zhp->zfs_name, target)) { 3817 zfs_error_aux(hdl, dgettext(TEXT_DOMAIN, 3818 "New dataset name cannot be a descendant of " 3819 "current dataset name")); 3820 return (zfs_error(hdl, EZFS_INVALIDNAME, errbuf)); 3821 } 3822 } 3823 3824 (void) snprintf(errbuf, sizeof (errbuf), 3825 dgettext(TEXT_DOMAIN, "cannot rename '%s'"), zhp->zfs_name); 3826 3827 if (getzoneid() == GLOBAL_ZONEID && 3828 zfs_prop_get_int(zhp, ZFS_PROP_ZONED)) { 3829 zfs_error_aux(hdl, dgettext(TEXT_DOMAIN, 3830 "dataset is used in a non-global zone")); 3831 return (zfs_error(hdl, EZFS_ZONED, errbuf)); 3832 } 3833 3834 /* 3835 * Avoid unmounting file systems with mountpoint property set to 3836 * 'legacy' or 'none' even if -u option is not given. 3837 */ 3838 if (zhp->zfs_type == ZFS_TYPE_FILESYSTEM && 3839 !flags.recurse && !flags.nounmount && 3840 zfs_prop_get(zhp, ZFS_PROP_MOUNTPOINT, property, 3841 sizeof (property), NULL, NULL, 0, B_FALSE) == 0 && 3842 (strcmp(property, "legacy") == 0 || 3843 strcmp(property, "none") == 0)) { 3844 flags.nounmount = B_TRUE; 3845 } 3846 3847 if (flags.recurse) { 3848 3849 parentname = zfs_strdup(zhp->zfs_hdl, zhp->zfs_name); 3850 if (parentname == NULL) { 3851 ret = -1; 3852 goto error; 3853 } 3854 delim = strchr(parentname, '@'); 3855 *delim = '\0'; 3856 zhrp = zfs_open(zhp->zfs_hdl, parentname, ZFS_TYPE_DATASET); 3857 if (zhrp == NULL) { 3858 ret = -1; 3859 goto error; 3860 } 3861 3862 } else { 3863 if ((cl = changelist_gather(zhp, ZFS_PROP_NAME, 3864 flags.nounmount ? CL_GATHER_DONT_UNMOUNT : 0, 3865 flags.forceunmount ? MS_FORCE : 0)) == NULL) { 3866 return (-1); 3867 } 3868 3869 if (changelist_haszonedchild(cl)) { 3870 zfs_error_aux(hdl, dgettext(TEXT_DOMAIN, 3871 "child dataset with inherited mountpoint is used " 3872 "in a non-global zone")); 3873 (void) zfs_error(hdl, EZFS_ZONED, errbuf); 3874 goto error; 3875 } 3876 3877 if ((ret = changelist_prefix(cl)) != 0) 3878 goto error; 3879 } 3880 3881 if (ZFS_IS_VOLUME(zhp)) 3882 zc.zc_objset_type = DMU_OST_ZVOL; 3883 else 3884 zc.zc_objset_type = DMU_OST_ZFS; 3885 3886 (void) strlcpy(zc.zc_name, zhp->zfs_name, sizeof (zc.zc_name)); 3887 (void) strlcpy(zc.zc_value, target, sizeof (zc.zc_value)); 3888 3889 zc.zc_cookie = flags.recurse ? 1 : 0; 3890 if (flags.nounmount) 3891 zc.zc_cookie |= 2; 3892 3893 if ((ret = zfs_ioctl(zhp->zfs_hdl, ZFS_IOC_RENAME, &zc)) != 0) { 3894 /* 3895 * if it was recursive, the one that actually failed will 3896 * be in zc.zc_name 3897 */ 3898 (void) snprintf(errbuf, sizeof (errbuf), dgettext(TEXT_DOMAIN, 3899 "cannot rename '%s'"), zc.zc_name); 3900 3901 if (flags.recurse && errno == EEXIST) { 3902 zfs_error_aux(hdl, dgettext(TEXT_DOMAIN, 3903 "a child dataset already has a snapshot " 3904 "with the new name")); 3905 (void) zfs_error(hdl, EZFS_EXISTS, errbuf); 3906 } else { 3907 (void) zfs_standard_error(zhp->zfs_hdl, errno, errbuf); 3908 } 3909 3910 /* 3911 * On failure, we still want to remount any filesystems that 3912 * were previously mounted, so we don't alter the system state. 3913 */ 3914 if (!flags.recurse) 3915 (void) changelist_postfix(cl); 3916 } else { 3917 if (!flags.recurse) { 3918 changelist_rename(cl, zfs_get_name(zhp), target); 3919 ret = changelist_postfix(cl); 3920 } 3921 } 3922 3923error: 3924 if (parentname) { 3925 free(parentname); 3926 } 3927 if (zhrp) { 3928 zfs_close(zhrp); 3929 } 3930 if (cl) { 3931 changelist_free(cl); 3932 } 3933 return (ret); 3934} 3935 3936nvlist_t * 3937zfs_get_user_props(zfs_handle_t *zhp) 3938{ 3939 return (zhp->zfs_user_props); 3940} 3941 3942nvlist_t * 3943zfs_get_recvd_props(zfs_handle_t *zhp) 3944{ 3945 if (zhp->zfs_recvd_props == NULL) 3946 if (get_recvd_props_ioctl(zhp) != 0) 3947 return (NULL); 3948 return (zhp->zfs_recvd_props); 3949} 3950 3951/* 3952 * This function is used by 'zfs list' to determine the exact set of columns to 3953 * display, and their maximum widths. This does two main things: 3954 * 3955 * - If this is a list of all properties, then expand the list to include 3956 * all native properties, and set a flag so that for each dataset we look 3957 * for new unique user properties and add them to the list. 3958 * 3959 * - For non fixed-width properties, keep track of the maximum width seen 3960 * so that we can size the column appropriately. If the user has 3961 * requested received property values, we also need to compute the width 3962 * of the RECEIVED column. 3963 */ 3964int 3965zfs_expand_proplist(zfs_handle_t *zhp, zprop_list_t **plp, boolean_t received, 3966 boolean_t literal) 3967{ 3968 libzfs_handle_t *hdl = zhp->zfs_hdl; 3969 zprop_list_t *entry; 3970 zprop_list_t **last, **start; 3971 nvlist_t *userprops, *propval; 3972 nvpair_t *elem; 3973 char *strval; 3974 char buf[ZFS_MAXPROPLEN]; 3975 3976 if (zprop_expand_list(hdl, plp, ZFS_TYPE_DATASET) != 0) 3977 return (-1); 3978 3979 userprops = zfs_get_user_props(zhp); 3980 3981 entry = *plp; 3982 if (entry->pl_all && nvlist_next_nvpair(userprops, NULL) != NULL) { 3983 /* 3984 * Go through and add any user properties as necessary. We 3985 * start by incrementing our list pointer to the first 3986 * non-native property. 3987 */ 3988 start = plp; 3989 while (*start != NULL) { 3990 if ((*start)->pl_prop == ZPROP_INVAL) 3991 break; 3992 start = &(*start)->pl_next; 3993 } 3994 3995 elem = NULL; 3996 while ((elem = nvlist_next_nvpair(userprops, elem)) != NULL) { 3997 /* 3998 * See if we've already found this property in our list. 3999 */ 4000 for (last = start; *last != NULL; 4001 last = &(*last)->pl_next) { 4002 if (strcmp((*last)->pl_user_prop, 4003 nvpair_name(elem)) == 0) 4004 break; 4005 } 4006 4007 if (*last == NULL) { 4008 if ((entry = zfs_alloc(hdl, 4009 sizeof (zprop_list_t))) == NULL || 4010 ((entry->pl_user_prop = zfs_strdup(hdl, 4011 nvpair_name(elem)))) == NULL) { 4012 free(entry); 4013 return (-1); 4014 } 4015 4016 entry->pl_prop = ZPROP_INVAL; 4017 entry->pl_width = strlen(nvpair_name(elem)); 4018 entry->pl_all = B_TRUE; 4019 *last = entry; 4020 } 4021 } 4022 } 4023 4024 /* 4025 * Now go through and check the width of any non-fixed columns 4026 */ 4027 for (entry = *plp; entry != NULL; entry = entry->pl_next) { 4028 if (entry->pl_fixed && !literal) 4029 continue; 4030 4031 if (entry->pl_prop != ZPROP_INVAL) { 4032 if (zfs_prop_get(zhp, entry->pl_prop, 4033 buf, sizeof (buf), NULL, NULL, 0, literal) == 0) { 4034 if (strlen(buf) > entry->pl_width) 4035 entry->pl_width = strlen(buf); 4036 } 4037 if (received && zfs_prop_get_recvd(zhp, 4038 zfs_prop_to_name(entry->pl_prop), 4039 buf, sizeof (buf), literal) == 0) 4040 if (strlen(buf) > entry->pl_recvd_width) 4041 entry->pl_recvd_width = strlen(buf); 4042 } else { 4043 if (nvlist_lookup_nvlist(userprops, entry->pl_user_prop, 4044 &propval) == 0) { 4045 verify(nvlist_lookup_string(propval, 4046 ZPROP_VALUE, &strval) == 0); 4047 if (strlen(strval) > entry->pl_width) 4048 entry->pl_width = strlen(strval); 4049 } 4050 if (received && zfs_prop_get_recvd(zhp, 4051 entry->pl_user_prop, 4052 buf, sizeof (buf), literal) == 0) 4053 if (strlen(buf) > entry->pl_recvd_width) 4054 entry->pl_recvd_width = strlen(buf); 4055 } 4056 } 4057 4058 return (0); 4059} 4060 4061int 4062zfs_deleg_share_nfs(libzfs_handle_t *hdl, char *dataset, char *path, 4063 char *resource, void *export, void *sharetab, 4064 int sharemax, zfs_share_op_t operation) 4065{ 4066 zfs_cmd_t zc = { 0 }; 4067 int error; 4068 4069 (void) strlcpy(zc.zc_name, dataset, sizeof (zc.zc_name)); 4070 (void) strlcpy(zc.zc_value, path, sizeof (zc.zc_value)); 4071 if (resource) 4072 (void) strlcpy(zc.zc_string, resource, sizeof (zc.zc_string)); 4073 zc.zc_share.z_sharedata = (uint64_t)(uintptr_t)sharetab; 4074 zc.zc_share.z_exportdata = (uint64_t)(uintptr_t)export; 4075 zc.zc_share.z_sharetype = operation; 4076 zc.zc_share.z_sharemax = sharemax; 4077 error = ioctl(hdl->libzfs_fd, ZFS_IOC_SHARE, &zc); 4078 return (error); 4079} 4080 4081void 4082zfs_prune_proplist(zfs_handle_t *zhp, uint8_t *props) 4083{ 4084 nvpair_t *curr; 4085 4086 /* 4087 * Keep a reference to the props-table against which we prune the 4088 * properties. 4089 */ 4090 zhp->zfs_props_table = props; 4091 4092 curr = nvlist_next_nvpair(zhp->zfs_props, NULL); 4093 4094 while (curr) { 4095 zfs_prop_t zfs_prop = zfs_name_to_prop(nvpair_name(curr)); 4096 nvpair_t *next = nvlist_next_nvpair(zhp->zfs_props, curr); 4097 4098 /* 4099 * User properties will result in ZPROP_INVAL, and since we 4100 * only know how to prune standard ZFS properties, we always 4101 * leave these in the list. This can also happen if we 4102 * encounter an unknown DSL property (when running older 4103 * software, for example). 4104 */ 4105 if (zfs_prop != ZPROP_INVAL && props[zfs_prop] == B_FALSE) 4106 (void) nvlist_remove(zhp->zfs_props, 4107 nvpair_name(curr), nvpair_type(curr)); 4108 curr = next; 4109 } 4110} 4111 4112#ifdef sun 4113static int 4114zfs_smb_acl_mgmt(libzfs_handle_t *hdl, char *dataset, char *path, 4115 zfs_smb_acl_op_t cmd, char *resource1, char *resource2) 4116{ 4117 zfs_cmd_t zc = { 0 }; 4118 nvlist_t *nvlist = NULL; 4119 int error; 4120 4121 (void) strlcpy(zc.zc_name, dataset, sizeof (zc.zc_name)); 4122 (void) strlcpy(zc.zc_value, path, sizeof (zc.zc_value)); 4123 zc.zc_cookie = (uint64_t)cmd; 4124 4125 if (cmd == ZFS_SMB_ACL_RENAME) { 4126 if (nvlist_alloc(&nvlist, NV_UNIQUE_NAME, 0) != 0) { 4127 (void) no_memory(hdl); 4128 return (NULL); 4129 } 4130 } 4131 4132 switch (cmd) { 4133 case ZFS_SMB_ACL_ADD: 4134 case ZFS_SMB_ACL_REMOVE: 4135 (void) strlcpy(zc.zc_string, resource1, sizeof (zc.zc_string)); 4136 break; 4137 case ZFS_SMB_ACL_RENAME: 4138 if (nvlist_add_string(nvlist, ZFS_SMB_ACL_SRC, 4139 resource1) != 0) { 4140 (void) no_memory(hdl); 4141 return (-1); 4142 } 4143 if (nvlist_add_string(nvlist, ZFS_SMB_ACL_TARGET, 4144 resource2) != 0) { 4145 (void) no_memory(hdl); 4146 return (-1); 4147 } 4148 if (zcmd_write_src_nvlist(hdl, &zc, nvlist) != 0) { 4149 nvlist_free(nvlist); 4150 return (-1); 4151 } 4152 break; 4153 case ZFS_SMB_ACL_PURGE: 4154 break; 4155 default: 4156 return (-1); 4157 } 4158 error = ioctl(hdl->libzfs_fd, ZFS_IOC_SMB_ACL, &zc); 4159 if (nvlist) 4160 nvlist_free(nvlist); 4161 return (error); 4162} 4163 4164int 4165zfs_smb_acl_add(libzfs_handle_t *hdl, char *dataset, 4166 char *path, char *resource) 4167{ 4168 return (zfs_smb_acl_mgmt(hdl, dataset, path, ZFS_SMB_ACL_ADD, 4169 resource, NULL)); 4170} 4171 4172int 4173zfs_smb_acl_remove(libzfs_handle_t *hdl, char *dataset, 4174 char *path, char *resource) 4175{ 4176 return (zfs_smb_acl_mgmt(hdl, dataset, path, ZFS_SMB_ACL_REMOVE, 4177 resource, NULL)); 4178} 4179 4180int 4181zfs_smb_acl_purge(libzfs_handle_t *hdl, char *dataset, char *path) 4182{ 4183 return (zfs_smb_acl_mgmt(hdl, dataset, path, ZFS_SMB_ACL_PURGE, 4184 NULL, NULL)); 4185} 4186 4187int 4188zfs_smb_acl_rename(libzfs_handle_t *hdl, char *dataset, char *path, 4189 char *oldname, char *newname) 4190{ 4191 return (zfs_smb_acl_mgmt(hdl, dataset, path, ZFS_SMB_ACL_RENAME, 4192 oldname, newname)); 4193} 4194#endif /* sun */ 4195 4196int 4197zfs_userspace(zfs_handle_t *zhp, zfs_userquota_prop_t type, 4198 zfs_userspace_cb_t func, void *arg) 4199{ 4200 zfs_cmd_t zc = { 0 }; 4201 zfs_useracct_t buf[100]; 4202 libzfs_handle_t *hdl = zhp->zfs_hdl; 4203 int ret; 4204 4205 (void) strlcpy(zc.zc_name, zhp->zfs_name, sizeof (zc.zc_name)); 4206 4207 zc.zc_objset_type = type; 4208 zc.zc_nvlist_dst = (uintptr_t)buf; 4209 4210 for (;;) { 4211 zfs_useracct_t *zua = buf; 4212 4213 zc.zc_nvlist_dst_size = sizeof (buf); 4214 if (zfs_ioctl(hdl, ZFS_IOC_USERSPACE_MANY, &zc) != 0) { 4215 char errbuf[1024]; 4216 4217 (void) snprintf(errbuf, sizeof (errbuf), 4218 dgettext(TEXT_DOMAIN, 4219 "cannot get used/quota for %s"), zc.zc_name); 4220 return (zfs_standard_error_fmt(hdl, errno, errbuf)); 4221 } 4222 if (zc.zc_nvlist_dst_size == 0) 4223 break; 4224 4225 while (zc.zc_nvlist_dst_size > 0) { 4226 if ((ret = func(arg, zua->zu_domain, zua->zu_rid, 4227 zua->zu_space)) != 0) 4228 return (ret); 4229 zua++; 4230 zc.zc_nvlist_dst_size -= sizeof (zfs_useracct_t); 4231 } 4232 } 4233 4234 return (0); 4235} 4236 4237struct holdarg { 4238 nvlist_t *nvl; 4239 const char *snapname; 4240 const char *tag; 4241 boolean_t recursive; 4242 int error; 4243}; 4244 4245static int 4246zfs_hold_one(zfs_handle_t *zhp, void *arg) 4247{ 4248 struct holdarg *ha = arg; 4249 char name[ZFS_MAXNAMELEN]; 4250 int rv = 0; 4251 4252 (void) snprintf(name, sizeof (name), 4253 "%s@%s", zhp->zfs_name, ha->snapname); 4254 4255 if (lzc_exists(name)) 4256 fnvlist_add_string(ha->nvl, name, ha->tag); 4257 4258 if (ha->recursive) 4259 rv = zfs_iter_filesystems(zhp, zfs_hold_one, ha); 4260 zfs_close(zhp); 4261 return (rv); 4262} 4263 4264int 4265zfs_hold(zfs_handle_t *zhp, const char *snapname, const char *tag, 4266 boolean_t recursive, int cleanup_fd) 4267{ 4268 int ret; 4269 struct holdarg ha; 4270 4271 ha.nvl = fnvlist_alloc(); 4272 ha.snapname = snapname; 4273 ha.tag = tag; 4274 ha.recursive = recursive; 4275 (void) zfs_hold_one(zfs_handle_dup(zhp), &ha); 4276 4277 if (nvlist_empty(ha.nvl)) { 4278 char errbuf[1024]; 4279 4280 fnvlist_free(ha.nvl); 4281 ret = ENOENT; 4282 (void) snprintf(errbuf, sizeof (errbuf), 4283 dgettext(TEXT_DOMAIN, 4284 "cannot hold snapshot '%s@%s'"), 4285 zhp->zfs_name, snapname); 4286 (void) zfs_standard_error(zhp->zfs_hdl, ret, errbuf); 4287 return (ret); 4288 } 4289 4290 ret = zfs_hold_nvl(zhp, cleanup_fd, ha.nvl); 4291 fnvlist_free(ha.nvl); 4292 4293 return (ret); 4294} 4295 4296int 4297zfs_hold_nvl(zfs_handle_t *zhp, int cleanup_fd, nvlist_t *holds) 4298{ 4299 int ret; 4300 nvlist_t *errors; 4301 libzfs_handle_t *hdl = zhp->zfs_hdl; 4302 char errbuf[1024]; 4303 nvpair_t *elem; 4304 4305 errors = NULL; 4306 ret = lzc_hold(holds, cleanup_fd, &errors); 4307 4308 if (ret == 0) { 4309 /* There may be errors even in the success case. */ 4310 fnvlist_free(errors); 4311 return (0); 4312 } 4313 4314 if (nvlist_empty(errors)) { 4315 /* no hold-specific errors */ 4316 (void) snprintf(errbuf, sizeof (errbuf), 4317 dgettext(TEXT_DOMAIN, "cannot hold")); 4318 switch (ret) { 4319 case ENOTSUP: 4320 zfs_error_aux(hdl, dgettext(TEXT_DOMAIN, 4321 "pool must be upgraded")); 4322 (void) zfs_error(hdl, EZFS_BADVERSION, errbuf); 4323 break; 4324 case EINVAL: 4325 (void) zfs_error(hdl, EZFS_BADTYPE, errbuf); 4326 break; 4327 default: 4328 (void) zfs_standard_error(hdl, ret, errbuf); 4329 } 4330 } 4331 4332 for (elem = nvlist_next_nvpair(errors, NULL); 4333 elem != NULL; 4334 elem = nvlist_next_nvpair(errors, elem)) { 4335 (void) snprintf(errbuf, sizeof (errbuf), 4336 dgettext(TEXT_DOMAIN, 4337 "cannot hold snapshot '%s'"), nvpair_name(elem)); 4338 switch (fnvpair_value_int32(elem)) { 4339 case E2BIG: 4340 /* 4341 * Temporary tags wind up having the ds object id 4342 * prepended. So even if we passed the length check 4343 * above, it's still possible for the tag to wind 4344 * up being slightly too long. 4345 */ 4346 (void) zfs_error(hdl, EZFS_TAGTOOLONG, errbuf); 4347 break; 4348 case EINVAL: 4349 (void) zfs_error(hdl, EZFS_BADTYPE, errbuf); 4350 break; 4351 case EEXIST: 4352 (void) zfs_error(hdl, EZFS_REFTAG_HOLD, errbuf); 4353 break; 4354 default: 4355 (void) zfs_standard_error(hdl, 4356 fnvpair_value_int32(elem), errbuf); 4357 } 4358 } 4359 4360 fnvlist_free(errors); 4361 return (ret); 4362} 4363 4364static int 4365zfs_release_one(zfs_handle_t *zhp, void *arg) 4366{ 4367 struct holdarg *ha = arg; 4368 char name[ZFS_MAXNAMELEN]; 4369 int rv = 0; 4370 nvlist_t *existing_holds; 4371 4372 (void) snprintf(name, sizeof (name), 4373 "%s@%s", zhp->zfs_name, ha->snapname); 4374 4375 if (lzc_get_holds(name, &existing_holds) != 0) { 4376 ha->error = ENOENT; 4377 } else if (!nvlist_exists(existing_holds, ha->tag)) { 4378 ha->error = ESRCH; 4379 } else { 4380 nvlist_t *torelease = fnvlist_alloc(); 4381 fnvlist_add_boolean(torelease, ha->tag); 4382 fnvlist_add_nvlist(ha->nvl, name, torelease); 4383 fnvlist_free(torelease); 4384 } 4385 4386 if (ha->recursive) 4387 rv = zfs_iter_filesystems(zhp, zfs_release_one, ha); 4388 zfs_close(zhp); 4389 return (rv); 4390} 4391 4392int 4393zfs_release(zfs_handle_t *zhp, const char *snapname, const char *tag, 4394 boolean_t recursive) 4395{ 4396 int ret; 4397 struct holdarg ha; 4398 nvlist_t *errors = NULL; 4399 nvpair_t *elem; 4400 libzfs_handle_t *hdl = zhp->zfs_hdl; 4401 char errbuf[1024]; 4402 4403 ha.nvl = fnvlist_alloc(); 4404 ha.snapname = snapname; 4405 ha.tag = tag; 4406 ha.recursive = recursive; 4407 ha.error = 0; 4408 (void) zfs_release_one(zfs_handle_dup(zhp), &ha); 4409 4410 if (nvlist_empty(ha.nvl)) { 4411 fnvlist_free(ha.nvl); 4412 ret = ha.error; 4413 (void) snprintf(errbuf, sizeof (errbuf), 4414 dgettext(TEXT_DOMAIN, 4415 "cannot release hold from snapshot '%s@%s'"), 4416 zhp->zfs_name, snapname); 4417 if (ret == ESRCH) { 4418 (void) zfs_error(hdl, EZFS_REFTAG_RELE, errbuf); 4419 } else { 4420 (void) zfs_standard_error(hdl, ret, errbuf); 4421 } 4422 return (ret); 4423 } 4424 4425 ret = lzc_release(ha.nvl, &errors); 4426 fnvlist_free(ha.nvl); 4427 4428 if (ret == 0) { 4429 /* There may be errors even in the success case. */ 4430 fnvlist_free(errors); 4431 return (0); 4432 } 4433 4434 if (nvlist_empty(errors)) { 4435 /* no hold-specific errors */ 4436 (void) snprintf(errbuf, sizeof (errbuf), dgettext(TEXT_DOMAIN, 4437 "cannot release")); 4438 switch (errno) { 4439 case ENOTSUP: 4440 zfs_error_aux(hdl, dgettext(TEXT_DOMAIN, 4441 "pool must be upgraded")); 4442 (void) zfs_error(hdl, EZFS_BADVERSION, errbuf); 4443 break; 4444 default: 4445 (void) zfs_standard_error_fmt(hdl, errno, errbuf); 4446 } 4447 } 4448 4449 for (elem = nvlist_next_nvpair(errors, NULL); 4450 elem != NULL; 4451 elem = nvlist_next_nvpair(errors, elem)) { 4452 (void) snprintf(errbuf, sizeof (errbuf), 4453 dgettext(TEXT_DOMAIN, 4454 "cannot release hold from snapshot '%s'"), 4455 nvpair_name(elem)); 4456 switch (fnvpair_value_int32(elem)) { 4457 case ESRCH: 4458 (void) zfs_error(hdl, EZFS_REFTAG_RELE, errbuf); 4459 break; 4460 case EINVAL: 4461 (void) zfs_error(hdl, EZFS_BADTYPE, errbuf); 4462 break; 4463 default: 4464 (void) zfs_standard_error_fmt(hdl, 4465 fnvpair_value_int32(elem), errbuf); 4466 } 4467 } 4468 4469 fnvlist_free(errors); 4470 return (ret); 4471} 4472 4473int 4474zfs_get_fsacl(zfs_handle_t *zhp, nvlist_t **nvl) 4475{ 4476 zfs_cmd_t zc = { 0 }; 4477 libzfs_handle_t *hdl = zhp->zfs_hdl; 4478 int nvsz = 2048; 4479 void *nvbuf; 4480 int err = 0; 4481 char errbuf[1024]; 4482 4483 assert(zhp->zfs_type == ZFS_TYPE_VOLUME || 4484 zhp->zfs_type == ZFS_TYPE_FILESYSTEM); 4485 4486tryagain: 4487 4488 nvbuf = malloc(nvsz); 4489 if (nvbuf == NULL) { 4490 err = (zfs_error(hdl, EZFS_NOMEM, strerror(errno))); 4491 goto out; 4492 } 4493 4494 zc.zc_nvlist_dst_size = nvsz; 4495 zc.zc_nvlist_dst = (uintptr_t)nvbuf; 4496 4497 (void) strlcpy(zc.zc_name, zhp->zfs_name, ZFS_MAXNAMELEN); 4498 4499 if (ioctl(hdl->libzfs_fd, ZFS_IOC_GET_FSACL, &zc) != 0) { 4500 (void) snprintf(errbuf, sizeof (errbuf), 4501 dgettext(TEXT_DOMAIN, "cannot get permissions on '%s'"), 4502 zc.zc_name); 4503 switch (errno) { 4504 case ENOMEM: 4505 free(nvbuf); 4506 nvsz = zc.zc_nvlist_dst_size; 4507 goto tryagain; 4508 4509 case ENOTSUP: 4510 zfs_error_aux(hdl, dgettext(TEXT_DOMAIN, 4511 "pool must be upgraded")); 4512 err = zfs_error(hdl, EZFS_BADVERSION, errbuf); 4513 break; 4514 case EINVAL: 4515 err = zfs_error(hdl, EZFS_BADTYPE, errbuf); 4516 break; 4517 case ENOENT: 4518 err = zfs_error(hdl, EZFS_NOENT, errbuf); 4519 break; 4520 default: 4521 err = zfs_standard_error_fmt(hdl, errno, errbuf); 4522 break; 4523 } 4524 } else { 4525 /* success */ 4526 int rc = nvlist_unpack(nvbuf, zc.zc_nvlist_dst_size, nvl, 0); 4527 if (rc) { 4528 (void) snprintf(errbuf, sizeof (errbuf), dgettext( 4529 TEXT_DOMAIN, "cannot get permissions on '%s'"), 4530 zc.zc_name); 4531 err = zfs_standard_error_fmt(hdl, rc, errbuf); 4532 } 4533 } 4534 4535 free(nvbuf); 4536out: 4537 return (err); 4538} 4539 4540int 4541zfs_set_fsacl(zfs_handle_t *zhp, boolean_t un, nvlist_t *nvl) 4542{ 4543 zfs_cmd_t zc = { 0 }; 4544 libzfs_handle_t *hdl = zhp->zfs_hdl; 4545 char *nvbuf; 4546 char errbuf[1024]; 4547 size_t nvsz; 4548 int err; 4549 4550 assert(zhp->zfs_type == ZFS_TYPE_VOLUME || 4551 zhp->zfs_type == ZFS_TYPE_FILESYSTEM); 4552 4553 err = nvlist_size(nvl, &nvsz, NV_ENCODE_NATIVE); 4554 assert(err == 0); 4555 4556 nvbuf = malloc(nvsz); 4557 4558 err = nvlist_pack(nvl, &nvbuf, &nvsz, NV_ENCODE_NATIVE, 0); 4559 assert(err == 0); 4560 4561 zc.zc_nvlist_src_size = nvsz; 4562 zc.zc_nvlist_src = (uintptr_t)nvbuf; 4563 zc.zc_perm_action = un; 4564 4565 (void) strlcpy(zc.zc_name, zhp->zfs_name, sizeof (zc.zc_name)); 4566 4567 if (zfs_ioctl(hdl, ZFS_IOC_SET_FSACL, &zc) != 0) { 4568 (void) snprintf(errbuf, sizeof (errbuf), 4569 dgettext(TEXT_DOMAIN, "cannot set permissions on '%s'"), 4570 zc.zc_name); 4571 switch (errno) { 4572 case ENOTSUP: 4573 zfs_error_aux(hdl, dgettext(TEXT_DOMAIN, 4574 "pool must be upgraded")); 4575 err = zfs_error(hdl, EZFS_BADVERSION, errbuf); 4576 break; 4577 case EINVAL: 4578 err = zfs_error(hdl, EZFS_BADTYPE, errbuf); 4579 break; 4580 case ENOENT: 4581 err = zfs_error(hdl, EZFS_NOENT, errbuf); 4582 break; 4583 default: 4584 err = zfs_standard_error_fmt(hdl, errno, errbuf); 4585 break; 4586 } 4587 } 4588 4589 free(nvbuf); 4590 4591 return (err); 4592} 4593 4594int 4595zfs_get_holds(zfs_handle_t *zhp, nvlist_t **nvl) 4596{ 4597 int err; 4598 char errbuf[1024]; 4599 4600 err = lzc_get_holds(zhp->zfs_name, nvl); 4601 4602 if (err != 0) { 4603 libzfs_handle_t *hdl = zhp->zfs_hdl; 4604 4605 (void) snprintf(errbuf, sizeof (errbuf), 4606 dgettext(TEXT_DOMAIN, "cannot get holds for '%s'"), 4607 zhp->zfs_name); 4608 switch (err) { 4609 case ENOTSUP: 4610 zfs_error_aux(hdl, dgettext(TEXT_DOMAIN, 4611 "pool must be upgraded")); 4612 err = zfs_error(hdl, EZFS_BADVERSION, errbuf); 4613 break; 4614 case EINVAL: 4615 err = zfs_error(hdl, EZFS_BADTYPE, errbuf); 4616 break; 4617 case ENOENT: 4618 err = zfs_error(hdl, EZFS_NOENT, errbuf); 4619 break; 4620 default: 4621 err = zfs_standard_error_fmt(hdl, errno, errbuf); 4622 break; 4623 } 4624 } 4625 4626 return (err); 4627} 4628 4629/* 4630 * Convert the zvol's volume size to an appropriate reservation. 4631 * Note: If this routine is updated, it is necessary to update the ZFS test 4632 * suite's shell version in reservation.kshlib. 4633 */ 4634uint64_t 4635zvol_volsize_to_reservation(uint64_t volsize, nvlist_t *props) 4636{ 4637 uint64_t numdb; 4638 uint64_t nblocks, volblocksize; 4639 int ncopies; 4640 char *strval; 4641 4642 if (nvlist_lookup_string(props, 4643 zfs_prop_to_name(ZFS_PROP_COPIES), &strval) == 0) 4644 ncopies = atoi(strval); 4645 else 4646 ncopies = 1; 4647 if (nvlist_lookup_uint64(props, 4648 zfs_prop_to_name(ZFS_PROP_VOLBLOCKSIZE), 4649 &volblocksize) != 0) 4650 volblocksize = ZVOL_DEFAULT_BLOCKSIZE; 4651 nblocks = volsize/volblocksize; 4652 /* start with metadnode L0-L6 */ 4653 numdb = 7; 4654 /* calculate number of indirects */ 4655 while (nblocks > 1) { 4656 nblocks += DNODES_PER_LEVEL - 1; 4657 nblocks /= DNODES_PER_LEVEL; 4658 numdb += nblocks; 4659 } 4660 numdb *= MIN(SPA_DVAS_PER_BP, ncopies + 1); 4661 volsize *= ncopies; 4662 /* 4663 * this is exactly DN_MAX_INDBLKSHIFT when metadata isn't 4664 * compressed, but in practice they compress down to about 4665 * 1100 bytes 4666 */ 4667 numdb *= 1ULL << DN_MAX_INDBLKSHIFT; 4668 volsize += numdb; 4669 return (volsize); 4670} 4671 4672/* 4673 * Attach/detach the given filesystem to/from the given jail. 4674 */ 4675int 4676zfs_jail(zfs_handle_t *zhp, int jailid, int attach) 4677{ 4678 libzfs_handle_t *hdl = zhp->zfs_hdl; 4679 zfs_cmd_t zc = { 0 }; 4680 char errbuf[1024]; 4681 unsigned long cmd; 4682 int ret; 4683 4684 if (attach) { 4685 (void) snprintf(errbuf, sizeof (errbuf), 4686 dgettext(TEXT_DOMAIN, "cannot jail '%s'"), zhp->zfs_name); 4687 } else { 4688 (void) snprintf(errbuf, sizeof (errbuf), 4689 dgettext(TEXT_DOMAIN, "cannot unjail '%s'"), zhp->zfs_name); 4690 } 4691 4692 switch (zhp->zfs_type) { 4693 case ZFS_TYPE_VOLUME: 4694 zfs_error_aux(hdl, dgettext(TEXT_DOMAIN, 4695 "volumes can not be jailed")); 4696 return (zfs_error(hdl, EZFS_BADTYPE, errbuf)); 4697 case ZFS_TYPE_SNAPSHOT: 4698 zfs_error_aux(hdl, dgettext(TEXT_DOMAIN, 4699 "snapshots can not be jailed")); 4700 return (zfs_error(hdl, EZFS_BADTYPE, errbuf)); 4701 } 4702 assert(zhp->zfs_type == ZFS_TYPE_FILESYSTEM); 4703 4704 (void) strlcpy(zc.zc_name, zhp->zfs_name, sizeof (zc.zc_name)); 4705 zc.zc_objset_type = DMU_OST_ZFS; 4706 zc.zc_jailid = jailid; 4707 4708 cmd = attach ? ZFS_IOC_JAIL : ZFS_IOC_UNJAIL; 4709 if ((ret = ioctl(hdl->libzfs_fd, cmd, &zc)) != 0) 4710 zfs_standard_error(hdl, errno, errbuf); 4711 4712 return (ret); 4713} 4714