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, Joyent, Inc. All rights reserved. 25 * Copyright (c) 2011, 2014 by Delphix. All rights reserved. 26 * Copyright (c) 2012 DEY Storage Systems, Inc. All rights reserved. 27 * Copyright (c) 2013 Martin Matuska. All rights reserved. 28 * Copyright (c) 2013 Steven Hartland. All rights reserved. 29 * Copyright 2013 Nexenta Systems, Inc. All rights reserved. 30 */ 31 32 #include <ctype.h> 33 #include <errno.h> 34 #include <libintl.h> 35 #include <math.h> 36 #include <stdio.h> 37 #include <stdlib.h> 38 #include <strings.h> 39 #include <unistd.h> 40 #include <stddef.h> 41 #include <zone.h> 42 #include <fcntl.h> 43 #include <sys/mntent.h> 44 #include <sys/mount.h> 45 #include <priv.h> 46 #include <pwd.h> 47 #include <grp.h> 48 #include <stddef.h> 49 #include <ucred.h> 50 #include <idmap.h> 51 #include <aclutils.h> 52 #include <directory.h> 53 54 #include <sys/dnode.h> 55 #include <sys/spa.h> 56 #include <sys/zap.h> 57 #include <libzfs.h> 58 59 #include "zfs_namecheck.h" 60 #include "zfs_prop.h" 61 #include "libzfs_impl.h" 62 #include "zfs_deleg.h" 63 64 static int userquota_propname_decode(const char *propname, boolean_t zoned, 65 zfs_userquota_prop_t *typep, char *domain, int domainlen, uint64_t *ridp); 66 67 /* 68 * Given a single type (not a mask of types), return the type in a human 69 * readable form. 70 */ 71 const char * 72 zfs_type_to_name(zfs_type_t type) 73 { 74 switch (type) { 75 case ZFS_TYPE_FILESYSTEM: 76 return (dgettext(TEXT_DOMAIN, "filesystem")); 77 case ZFS_TYPE_SNAPSHOT: 78 return (dgettext(TEXT_DOMAIN, "snapshot")); 79 case ZFS_TYPE_VOLUME: 80 return (dgettext(TEXT_DOMAIN, "volume")); 81 } 82 83 return (NULL); 84 } 85 86 /* 87 * Given a path and mask of ZFS types, return a string describing this dataset. 88 * This is used when we fail to open a dataset and we cannot get an exact type. 89 * We guess what the type would have been based on the path and the mask of 90 * acceptable types. 91 */ 92 static const char * 93 path_to_str(const char *path, int types) 94 { 95 /* 96 * When given a single type, always report the exact type. 97 */ 98 if (types == ZFS_TYPE_SNAPSHOT) 99 return (dgettext(TEXT_DOMAIN, "snapshot")); 100 if (types == ZFS_TYPE_FILESYSTEM) 101 return (dgettext(TEXT_DOMAIN, "filesystem")); 102 if (types == ZFS_TYPE_VOLUME) 103 return (dgettext(TEXT_DOMAIN, "volume")); 104 105 /* 106 * The user is requesting more than one type of dataset. If this is the 107 * case, consult the path itself. If we're looking for a snapshot, and 108 * a '@' is found, then report it as "snapshot". Otherwise, remove the 109 * snapshot attribute and try again. 110 */ 111 if (types & ZFS_TYPE_SNAPSHOT) { 112 if (strchr(path, '@') != NULL) 113 return (dgettext(TEXT_DOMAIN, "snapshot")); 114 return (path_to_str(path, types & ~ZFS_TYPE_SNAPSHOT)); 115 } 116 117 /* 118 * The user has requested either filesystems or volumes. 119 * We have no way of knowing a priori what type this would be, so always 120 * report it as "filesystem" or "volume", our two primitive types. 121 */ 122 if (types & ZFS_TYPE_FILESYSTEM) 123 return (dgettext(TEXT_DOMAIN, "filesystem")); 124 125 assert(types & ZFS_TYPE_VOLUME); 126 return (dgettext(TEXT_DOMAIN, "volume")); 127 } 128 129 /* 130 * Validate a ZFS path. This is used even before trying to open the dataset, to 131 * provide a more meaningful error message. We call zfs_error_aux() to 132 * explain exactly why the name was not valid. 133 */ 134 int 135 zfs_validate_name(libzfs_handle_t *hdl, const char *path, int type, 136 boolean_t modifying) 137 { 138 namecheck_err_t why; 139 char what; 140 141 (void) zfs_prop_get_table(); 142 if (dataset_namecheck(path, &why, &what) != 0) { 143 if (hdl != NULL) { 144 switch (why) { 145 case NAME_ERR_TOOLONG: 146 zfs_error_aux(hdl, dgettext(TEXT_DOMAIN, 147 "name is too long")); 148 break; 149 150 case NAME_ERR_LEADING_SLASH: 151 zfs_error_aux(hdl, dgettext(TEXT_DOMAIN, 152 "leading slash in name")); 153 break; 154 155 case NAME_ERR_EMPTY_COMPONENT: 156 zfs_error_aux(hdl, dgettext(TEXT_DOMAIN, 157 "empty component in name")); 158 break; 159 160 case NAME_ERR_TRAILING_SLASH: 161 zfs_error_aux(hdl, dgettext(TEXT_DOMAIN, 162 "trailing slash in name")); 163 break; 164 165 case NAME_ERR_INVALCHAR: 166 zfs_error_aux(hdl, 167 dgettext(TEXT_DOMAIN, "invalid character " 168 "'%c' in name"), what); 169 break; 170 171 case NAME_ERR_MULTIPLE_AT: 172 zfs_error_aux(hdl, dgettext(TEXT_DOMAIN, 173 "multiple '@' delimiters in name")); 174 break; 175 176 case NAME_ERR_NOLETTER: 177 zfs_error_aux(hdl, dgettext(TEXT_DOMAIN, 178 "pool doesn't begin with a letter")); 179 break; 180 181 case NAME_ERR_RESERVED: 182 zfs_error_aux(hdl, dgettext(TEXT_DOMAIN, 183 "name is reserved")); 184 break; 185 186 case NAME_ERR_DISKLIKE: 187 zfs_error_aux(hdl, dgettext(TEXT_DOMAIN, 188 "reserved disk name")); 189 break; 190 } 191 } 192 193 return (0); 194 } 195 196 if (!(type & ZFS_TYPE_SNAPSHOT) && strchr(path, '@') != NULL) { 197 if (hdl != NULL) 198 zfs_error_aux(hdl, dgettext(TEXT_DOMAIN, 199 "snapshot delimiter '@' in filesystem name")); 200 return (0); 201 } 202 203 if (type == ZFS_TYPE_SNAPSHOT && strchr(path, '@') == NULL) { 204 if (hdl != NULL) 205 zfs_error_aux(hdl, dgettext(TEXT_DOMAIN, 206 "missing '@' delimiter in snapshot name")); 207 return (0); 208 } 209 210 if (modifying && strchr(path, '%') != NULL) { 211 if (hdl != NULL) 212 zfs_error_aux(hdl, dgettext(TEXT_DOMAIN, 213 "invalid character %c in name"), '%'); 214 return (0); 215 } 216 217 return (-1); 218 } 219 220 int 221 zfs_name_valid(const char *name, zfs_type_t type) 222 { 223 if (type == ZFS_TYPE_POOL) 224 return (zpool_name_valid(NULL, B_FALSE, name)); 225 return (zfs_validate_name(NULL, name, type, B_FALSE)); 226 } 227 228 /* 229 * This function takes the raw DSL properties, and filters out the user-defined 230 * properties into a separate nvlist. 231 */ 232 static nvlist_t * 233 process_user_props(zfs_handle_t *zhp, nvlist_t *props) 234 { 235 libzfs_handle_t *hdl = zhp->zfs_hdl; 236 nvpair_t *elem; 237 nvlist_t *propval; 238 nvlist_t *nvl; 239 240 if (nvlist_alloc(&nvl, NV_UNIQUE_NAME, 0) != 0) { 241 (void) no_memory(hdl); 242 return (NULL); 243 } 244 245 elem = NULL; 246 while ((elem = nvlist_next_nvpair(props, elem)) != NULL) { 247 if (!zfs_prop_user(nvpair_name(elem))) 248 continue; 249 250 verify(nvpair_value_nvlist(elem, &propval) == 0); 251 if (nvlist_add_nvlist(nvl, nvpair_name(elem), propval) != 0) { 252 nvlist_free(nvl); 253 (void) no_memory(hdl); 254 return (NULL); 255 } 256 } 257 258 return (nvl); 259 } 260 261 static zpool_handle_t * 262 zpool_add_handle(zfs_handle_t *zhp, const char *pool_name) 263 { 264 libzfs_handle_t *hdl = zhp->zfs_hdl; 265 zpool_handle_t *zph; 266 267 if ((zph = zpool_open_canfail(hdl, pool_name)) != NULL) { 268 if (hdl->libzfs_pool_handles != NULL) 269 zph->zpool_next = hdl->libzfs_pool_handles; 270 hdl->libzfs_pool_handles = zph; 271 } 272 return (zph); 273 } 274 275 static zpool_handle_t * 276 zpool_find_handle(zfs_handle_t *zhp, const char *pool_name, int len) 277 { 278 libzfs_handle_t *hdl = zhp->zfs_hdl; 279 zpool_handle_t *zph = hdl->libzfs_pool_handles; 280 281 while ((zph != NULL) && 282 (strncmp(pool_name, zpool_get_name(zph), len) != 0)) 283 zph = zph->zpool_next; 284 return (zph); 285 } 286 287 /* 288 * Returns a handle to the pool that contains the provided dataset. 289 * If a handle to that pool already exists then that handle is returned. 290 * Otherwise, a new handle is created and added to the list of handles. 291 */ 292 static zpool_handle_t * 293 zpool_handle(zfs_handle_t *zhp) 294 { 295 char *pool_name; 296 int len; 297 zpool_handle_t *zph; 298 299 len = strcspn(zhp->zfs_name, "/@#") + 1; 300 pool_name = zfs_alloc(zhp->zfs_hdl, len); 301 (void) strlcpy(pool_name, zhp->zfs_name, len); 302 303 zph = zpool_find_handle(zhp, pool_name, len); 304 if (zph == NULL) 305 zph = zpool_add_handle(zhp, pool_name); 306 307 free(pool_name); 308 return (zph); 309 } 310 311 void 312 zpool_free_handles(libzfs_handle_t *hdl) 313 { 314 zpool_handle_t *next, *zph = hdl->libzfs_pool_handles; 315 316 while (zph != NULL) { 317 next = zph->zpool_next; 318 zpool_close(zph); 319 zph = next; 320 } 321 hdl->libzfs_pool_handles = NULL; 322 } 323 324 /* 325 * Utility function to gather stats (objset and zpl) for the given object. 326 */ 327 static int 328 get_stats_ioctl(zfs_handle_t *zhp, zfs_cmd_t *zc) 329 { 330 libzfs_handle_t *hdl = zhp->zfs_hdl; 331 332 (void) strlcpy(zc->zc_name, zhp->zfs_name, sizeof (zc->zc_name)); 333 334 while (ioctl(hdl->libzfs_fd, ZFS_IOC_OBJSET_STATS, zc) != 0) { 335 if (errno == ENOMEM) { 336 if (zcmd_expand_dst_nvlist(hdl, zc) != 0) { 337 return (-1); 338 } 339 } else { 340 return (-1); 341 } 342 } 343 return (0); 344 } 345 346 /* 347 * Utility function to get the received properties of the given object. 348 */ 349 static int 350 get_recvd_props_ioctl(zfs_handle_t *zhp) 351 { 352 libzfs_handle_t *hdl = zhp->zfs_hdl; 353 nvlist_t *recvdprops; 354 zfs_cmd_t zc = { 0 }; 355 int err; 356 357 if (zcmd_alloc_dst_nvlist(hdl, &zc, 0) != 0) 358 return (-1); 359 360 (void) strlcpy(zc.zc_name, zhp->zfs_name, sizeof (zc.zc_name)); 361 362 while (ioctl(hdl->libzfs_fd, ZFS_IOC_OBJSET_RECVD_PROPS, &zc) != 0) { 363 if (errno == ENOMEM) { 364 if (zcmd_expand_dst_nvlist(hdl, &zc) != 0) { 365 return (-1); 366 } 367 } else { 368 zcmd_free_nvlists(&zc); 369 return (-1); 370 } 371 } 372 373 err = zcmd_read_dst_nvlist(zhp->zfs_hdl, &zc, &recvdprops); 374 zcmd_free_nvlists(&zc); 375 if (err != 0) 376 return (-1); 377 378 nvlist_free(zhp->zfs_recvd_props); 379 zhp->zfs_recvd_props = recvdprops; 380 381 return (0); 382 } 383 384 static int 385 put_stats_zhdl(zfs_handle_t *zhp, zfs_cmd_t *zc) 386 { 387 nvlist_t *allprops, *userprops; 388 389 zhp->zfs_dmustats = zc->zc_objset_stats; /* structure assignment */ 390 391 if (zcmd_read_dst_nvlist(zhp->zfs_hdl, zc, &allprops) != 0) { 392 return (-1); 393 } 394 395 /* 396 * XXX Why do we store the user props separately, in addition to 397 * storing them in zfs_props? 398 */ 399 if ((userprops = process_user_props(zhp, allprops)) == NULL) { 400 nvlist_free(allprops); 401 return (-1); 402 } 403 404 nvlist_free(zhp->zfs_props); 405 nvlist_free(zhp->zfs_user_props); 406 407 zhp->zfs_props = allprops; 408 zhp->zfs_user_props = userprops; 409 410 return (0); 411 } 412 413 static int 414 get_stats(zfs_handle_t *zhp) 415 { 416 int rc = 0; 417 zfs_cmd_t zc = { 0 }; 418 419 if (zcmd_alloc_dst_nvlist(zhp->zfs_hdl, &zc, 0) != 0) 420 return (-1); 421 if (get_stats_ioctl(zhp, &zc) != 0) 422 rc = -1; 423 else if (put_stats_zhdl(zhp, &zc) != 0) 424 rc = -1; 425 zcmd_free_nvlists(&zc); 426 return (rc); 427 } 428 429 /* 430 * Refresh the properties currently stored in the handle. 431 */ 432 void 433 zfs_refresh_properties(zfs_handle_t *zhp) 434 { 435 (void) get_stats(zhp); 436 } 437 438 /* 439 * Makes a handle from the given dataset name. Used by zfs_open() and 440 * zfs_iter_* to create child handles on the fly. 441 */ 442 static int 443 make_dataset_handle_common(zfs_handle_t *zhp, zfs_cmd_t *zc) 444 { 445 if (put_stats_zhdl(zhp, zc) != 0) 446 return (-1); 447 448 /* 449 * We've managed to open the dataset and gather statistics. Determine 450 * the high-level type. 451 */ 452 if (zhp->zfs_dmustats.dds_type == DMU_OST_ZVOL) 453 zhp->zfs_head_type = ZFS_TYPE_VOLUME; 454 else if (zhp->zfs_dmustats.dds_type == DMU_OST_ZFS) 455 zhp->zfs_head_type = ZFS_TYPE_FILESYSTEM; 456 else 457 abort(); 458 459 if (zhp->zfs_dmustats.dds_is_snapshot) 460 zhp->zfs_type = ZFS_TYPE_SNAPSHOT; 461 else if (zhp->zfs_dmustats.dds_type == DMU_OST_ZVOL) 462 zhp->zfs_type = ZFS_TYPE_VOLUME; 463 else if (zhp->zfs_dmustats.dds_type == DMU_OST_ZFS) 464 zhp->zfs_type = ZFS_TYPE_FILESYSTEM; 465 else 466 abort(); /* we should never see any other types */ 467 468 if ((zhp->zpool_hdl = zpool_handle(zhp)) == NULL) 469 return (-1); 470 471 return (0); 472 } 473 474 zfs_handle_t * 475 make_dataset_handle(libzfs_handle_t *hdl, const char *path) 476 { 477 zfs_cmd_t zc = { 0 }; 478 479 zfs_handle_t *zhp = calloc(sizeof (zfs_handle_t), 1); 480 481 if (zhp == NULL) 482 return (NULL); 483 484 zhp->zfs_hdl = hdl; 485 (void) strlcpy(zhp->zfs_name, path, sizeof (zhp->zfs_name)); 486 if (zcmd_alloc_dst_nvlist(hdl, &zc, 0) != 0) { 487 free(zhp); 488 return (NULL); 489 } 490 if (get_stats_ioctl(zhp, &zc) == -1) { 491 zcmd_free_nvlists(&zc); 492 free(zhp); 493 return (NULL); 494 } 495 if (make_dataset_handle_common(zhp, &zc) == -1) { 496 free(zhp); 497 zhp = NULL; 498 } 499 zcmd_free_nvlists(&zc); 500 return (zhp); 501 } 502 503 zfs_handle_t * 504 make_dataset_handle_zc(libzfs_handle_t *hdl, zfs_cmd_t *zc) 505 { 506 zfs_handle_t *zhp = calloc(sizeof (zfs_handle_t), 1); 507 508 if (zhp == NULL) 509 return (NULL); 510 511 zhp->zfs_hdl = hdl; 512 (void) strlcpy(zhp->zfs_name, zc->zc_name, sizeof (zhp->zfs_name)); 513 if (make_dataset_handle_common(zhp, zc) == -1) { 514 free(zhp); 515 return (NULL); 516 } 517 return (zhp); 518 } 519 520 zfs_handle_t * 521 zfs_handle_dup(zfs_handle_t *zhp_orig) 522 { 523 zfs_handle_t *zhp = calloc(sizeof (zfs_handle_t), 1); 524 525 if (zhp == NULL) 526 return (NULL); 527 528 zhp->zfs_hdl = zhp_orig->zfs_hdl; 529 zhp->zpool_hdl = zhp_orig->zpool_hdl; 530 (void) strlcpy(zhp->zfs_name, zhp_orig->zfs_name, 531 sizeof (zhp->zfs_name)); 532 zhp->zfs_type = zhp_orig->zfs_type; 533 zhp->zfs_head_type = zhp_orig->zfs_head_type; 534 zhp->zfs_dmustats = zhp_orig->zfs_dmustats; 535 if (zhp_orig->zfs_props != NULL) { 536 if (nvlist_dup(zhp_orig->zfs_props, &zhp->zfs_props, 0) != 0) { 537 (void) no_memory(zhp->zfs_hdl); 538 zfs_close(zhp); 539 return (NULL); 540 } 541 } 542 if (zhp_orig->zfs_user_props != NULL) { 543 if (nvlist_dup(zhp_orig->zfs_user_props, 544 &zhp->zfs_user_props, 0) != 0) { 545 (void) no_memory(zhp->zfs_hdl); 546 zfs_close(zhp); 547 return (NULL); 548 } 549 } 550 if (zhp_orig->zfs_recvd_props != NULL) { 551 if (nvlist_dup(zhp_orig->zfs_recvd_props, 552 &zhp->zfs_recvd_props, 0)) { 553 (void) no_memory(zhp->zfs_hdl); 554 zfs_close(zhp); 555 return (NULL); 556 } 557 } 558 zhp->zfs_mntcheck = zhp_orig->zfs_mntcheck; 559 if (zhp_orig->zfs_mntopts != NULL) { 560 zhp->zfs_mntopts = zfs_strdup(zhp_orig->zfs_hdl, 561 zhp_orig->zfs_mntopts); 562 } 563 zhp->zfs_props_table = zhp_orig->zfs_props_table; 564 return (zhp); 565 } 566 567 boolean_t 568 zfs_bookmark_exists(const char *path) 569 { 570 nvlist_t *bmarks; 571 nvlist_t *props; 572 char fsname[ZFS_MAXNAMELEN]; 573 char *bmark_name; 574 char *pound; 575 int err; 576 boolean_t rv; 577 578 579 (void) strlcpy(fsname, path, sizeof (fsname)); 580 pound = strchr(fsname, '#'); 581 if (pound == NULL) 582 return (B_FALSE); 583 584 *pound = '\0'; 585 bmark_name = pound + 1; 586 props = fnvlist_alloc(); 587 err = lzc_get_bookmarks(fsname, props, &bmarks); 588 nvlist_free(props); 589 if (err != 0) { 590 nvlist_free(bmarks); 591 return (B_FALSE); 592 } 593 594 rv = nvlist_exists(bmarks, bmark_name); 595 nvlist_free(bmarks); 596 return (rv); 597 } 598 599 zfs_handle_t * 600 make_bookmark_handle(zfs_handle_t *parent, const char *path, 601 nvlist_t *bmark_props) 602 { 603 zfs_handle_t *zhp = calloc(sizeof (zfs_handle_t), 1); 604 605 if (zhp == NULL) 606 return (NULL); 607 608 /* Fill in the name. */ 609 zhp->zfs_hdl = parent->zfs_hdl; 610 (void) strlcpy(zhp->zfs_name, path, sizeof (zhp->zfs_name)); 611 612 /* Set the property lists. */ 613 if (nvlist_dup(bmark_props, &zhp->zfs_props, 0) != 0) { 614 free(zhp); 615 return (NULL); 616 } 617 618 /* Set the types. */ 619 zhp->zfs_head_type = parent->zfs_head_type; 620 zhp->zfs_type = ZFS_TYPE_BOOKMARK; 621 622 if ((zhp->zpool_hdl = zpool_handle(zhp)) == NULL) { 623 nvlist_free(zhp->zfs_props); 624 free(zhp); 625 return (NULL); 626 } 627 628 return (zhp); 629 } 630 631 /* 632 * Opens the given snapshot, filesystem, or volume. The 'types' 633 * argument is a mask of acceptable types. The function will print an 634 * appropriate error message and return NULL if it can't be opened. 635 */ 636 zfs_handle_t * 637 zfs_open(libzfs_handle_t *hdl, const char *path, int types) 638 { 639 zfs_handle_t *zhp; 640 char errbuf[1024]; 641 642 (void) snprintf(errbuf, sizeof (errbuf), 643 dgettext(TEXT_DOMAIN, "cannot open '%s'"), path); 644 645 /* 646 * Validate the name before we even try to open it. 647 */ 648 if (!zfs_validate_name(hdl, path, ZFS_TYPE_DATASET, B_FALSE)) { 649 zfs_error_aux(hdl, dgettext(TEXT_DOMAIN, 650 "invalid dataset name")); 651 (void) zfs_error(hdl, EZFS_INVALIDNAME, errbuf); 652 return (NULL); 653 } 654 655 /* 656 * Try to get stats for the dataset, which will tell us if it exists. 657 */ 658 errno = 0; 659 if ((zhp = make_dataset_handle(hdl, path)) == NULL) { 660 (void) zfs_standard_error(hdl, errno, errbuf); 661 return (NULL); 662 } 663 664 if (!(types & zhp->zfs_type)) { 665 (void) zfs_error(hdl, EZFS_BADTYPE, errbuf); 666 zfs_close(zhp); 667 return (NULL); 668 } 669 670 return (zhp); 671 } 672 673 /* 674 * Release a ZFS handle. Nothing to do but free the associated memory. 675 */ 676 void 677 zfs_close(zfs_handle_t *zhp) 678 { 679 if (zhp->zfs_mntopts) 680 free(zhp->zfs_mntopts); 681 nvlist_free(zhp->zfs_props); 682 nvlist_free(zhp->zfs_user_props); 683 nvlist_free(zhp->zfs_recvd_props); 684 free(zhp); 685 } 686 687 typedef struct mnttab_node { 688 struct mnttab mtn_mt; 689 avl_node_t mtn_node; 690 } mnttab_node_t; 691 692 static int 693 libzfs_mnttab_cache_compare(const void *arg1, const void *arg2) 694 { 695 const mnttab_node_t *mtn1 = arg1; 696 const mnttab_node_t *mtn2 = arg2; 697 int rv; 698 699 rv = strcmp(mtn1->mtn_mt.mnt_special, mtn2->mtn_mt.mnt_special); 700 701 if (rv == 0) 702 return (0); 703 return (rv > 0 ? 1 : -1); 704 } 705 706 void 707 libzfs_mnttab_init(libzfs_handle_t *hdl) 708 { 709 assert(avl_numnodes(&hdl->libzfs_mnttab_cache) == 0); 710 avl_create(&hdl->libzfs_mnttab_cache, libzfs_mnttab_cache_compare, 711 sizeof (mnttab_node_t), offsetof(mnttab_node_t, mtn_node)); 712 } 713 714 void 715 libzfs_mnttab_update(libzfs_handle_t *hdl) 716 { 717 struct mnttab entry; 718 719 rewind(hdl->libzfs_mnttab); 720 while (getmntent(hdl->libzfs_mnttab, &entry) == 0) { 721 mnttab_node_t *mtn; 722 723 if (strcmp(entry.mnt_fstype, MNTTYPE_ZFS) != 0) 724 continue; 725 mtn = zfs_alloc(hdl, sizeof (mnttab_node_t)); 726 mtn->mtn_mt.mnt_special = zfs_strdup(hdl, entry.mnt_special); 727 mtn->mtn_mt.mnt_mountp = zfs_strdup(hdl, entry.mnt_mountp); 728 mtn->mtn_mt.mnt_fstype = zfs_strdup(hdl, entry.mnt_fstype); 729 mtn->mtn_mt.mnt_mntopts = zfs_strdup(hdl, entry.mnt_mntopts); 730 avl_add(&hdl->libzfs_mnttab_cache, mtn); 731 } 732 } 733 734 void 735 libzfs_mnttab_fini(libzfs_handle_t *hdl) 736 { 737 void *cookie = NULL; 738 mnttab_node_t *mtn; 739 740 while (mtn = avl_destroy_nodes(&hdl->libzfs_mnttab_cache, &cookie)) { 741 free(mtn->mtn_mt.mnt_special); 742 free(mtn->mtn_mt.mnt_mountp); 743 free(mtn->mtn_mt.mnt_fstype); 744 free(mtn->mtn_mt.mnt_mntopts); 745 free(mtn); 746 } 747 avl_destroy(&hdl->libzfs_mnttab_cache); 748 } 749 750 void 751 libzfs_mnttab_cache(libzfs_handle_t *hdl, boolean_t enable) 752 { 753 hdl->libzfs_mnttab_enable = enable; 754 } 755 756 int 757 libzfs_mnttab_find(libzfs_handle_t *hdl, const char *fsname, 758 struct mnttab *entry) 759 { 760 mnttab_node_t find; 761 mnttab_node_t *mtn; 762 763 if (!hdl->libzfs_mnttab_enable) { 764 struct mnttab srch = { 0 }; 765 766 if (avl_numnodes(&hdl->libzfs_mnttab_cache)) 767 libzfs_mnttab_fini(hdl); 768 rewind(hdl->libzfs_mnttab); 769 srch.mnt_special = (char *)fsname; 770 srch.mnt_fstype = MNTTYPE_ZFS; 771 if (getmntany(hdl->libzfs_mnttab, entry, &srch) == 0) 772 return (0); 773 else 774 return (ENOENT); 775 } 776 777 if (avl_numnodes(&hdl->libzfs_mnttab_cache) == 0) 778 libzfs_mnttab_update(hdl); 779 780 find.mtn_mt.mnt_special = (char *)fsname; 781 mtn = avl_find(&hdl->libzfs_mnttab_cache, &find, NULL); 782 if (mtn) { 783 *entry = mtn->mtn_mt; 784 return (0); 785 } 786 return (ENOENT); 787 } 788 789 void 790 libzfs_mnttab_add(libzfs_handle_t *hdl, const char *special, 791 const char *mountp, const char *mntopts) 792 { 793 mnttab_node_t *mtn; 794 795 if (avl_numnodes(&hdl->libzfs_mnttab_cache) == 0) 796 return; 797 mtn = zfs_alloc(hdl, sizeof (mnttab_node_t)); 798 mtn->mtn_mt.mnt_special = zfs_strdup(hdl, special); 799 mtn->mtn_mt.mnt_mountp = zfs_strdup(hdl, mountp); 800 mtn->mtn_mt.mnt_fstype = zfs_strdup(hdl, MNTTYPE_ZFS); 801 mtn->mtn_mt.mnt_mntopts = zfs_strdup(hdl, mntopts); 802 avl_add(&hdl->libzfs_mnttab_cache, mtn); 803 } 804 805 void 806 libzfs_mnttab_remove(libzfs_handle_t *hdl, const char *fsname) 807 { 808 mnttab_node_t find; 809 mnttab_node_t *ret; 810 811 find.mtn_mt.mnt_special = (char *)fsname; 812 if (ret = avl_find(&hdl->libzfs_mnttab_cache, (void *)&find, NULL)) { 813 avl_remove(&hdl->libzfs_mnttab_cache, ret); 814 free(ret->mtn_mt.mnt_special); 815 free(ret->mtn_mt.mnt_mountp); 816 free(ret->mtn_mt.mnt_fstype); 817 free(ret->mtn_mt.mnt_mntopts); 818 free(ret); 819 } 820 } 821 822 int 823 zfs_spa_version(zfs_handle_t *zhp, int *spa_version) 824 { 825 zpool_handle_t *zpool_handle = zhp->zpool_hdl; 826 827 if (zpool_handle == NULL) 828 return (-1); 829 830 *spa_version = zpool_get_prop_int(zpool_handle, 831 ZPOOL_PROP_VERSION, NULL); 832 return (0); 833 } 834 835 /* 836 * The choice of reservation property depends on the SPA version. 837 */ 838 static int 839 zfs_which_resv_prop(zfs_handle_t *zhp, zfs_prop_t *resv_prop) 840 { 841 int spa_version; 842 843 if (zfs_spa_version(zhp, &spa_version) < 0) 844 return (-1); 845 846 if (spa_version >= SPA_VERSION_REFRESERVATION) 847 *resv_prop = ZFS_PROP_REFRESERVATION; 848 else 849 *resv_prop = ZFS_PROP_RESERVATION; 850 851 return (0); 852 } 853 854 /* 855 * Given an nvlist of properties to set, validates that they are correct, and 856 * parses any numeric properties (index, boolean, etc) if they are specified as 857 * strings. 858 */ 859 nvlist_t * 860 zfs_valid_proplist(libzfs_handle_t *hdl, zfs_type_t type, nvlist_t *nvl, 861 uint64_t zoned, zfs_handle_t *zhp, const char *errbuf) 862 { 863 nvpair_t *elem; 864 uint64_t intval; 865 char *strval; 866 zfs_prop_t prop; 867 nvlist_t *ret; 868 int chosen_normal = -1; 869 int chosen_utf = -1; 870 871 if (nvlist_alloc(&ret, NV_UNIQUE_NAME, 0) != 0) { 872 (void) no_memory(hdl); 873 return (NULL); 874 } 875 876 /* 877 * Make sure this property is valid and applies to this type. 878 */ 879 880 elem = NULL; 881 while ((elem = nvlist_next_nvpair(nvl, elem)) != NULL) { 882 const char *propname = nvpair_name(elem); 883 884 prop = zfs_name_to_prop(propname); 885 if (prop == ZPROP_INVAL && zfs_prop_user(propname)) { 886 /* 887 * This is a user property: make sure it's a 888 * string, and that it's less than ZAP_MAXNAMELEN. 889 */ 890 if (nvpair_type(elem) != DATA_TYPE_STRING) { 891 zfs_error_aux(hdl, dgettext(TEXT_DOMAIN, 892 "'%s' must be a string"), propname); 893 (void) zfs_error(hdl, EZFS_BADPROP, errbuf); 894 goto error; 895 } 896 897 if (strlen(nvpair_name(elem)) >= ZAP_MAXNAMELEN) { 898 zfs_error_aux(hdl, dgettext(TEXT_DOMAIN, 899 "property name '%s' is too long"), 900 propname); 901 (void) zfs_error(hdl, EZFS_BADPROP, errbuf); 902 goto error; 903 } 904 905 (void) nvpair_value_string(elem, &strval); 906 if (nvlist_add_string(ret, propname, strval) != 0) { 907 (void) no_memory(hdl); 908 goto error; 909 } 910 continue; 911 } 912 913 /* 914 * Currently, only user properties can be modified on 915 * snapshots. 916 */ 917 if (type == ZFS_TYPE_SNAPSHOT) { 918 zfs_error_aux(hdl, dgettext(TEXT_DOMAIN, 919 "this property can not be modified for snapshots")); 920 (void) zfs_error(hdl, EZFS_PROPTYPE, errbuf); 921 goto error; 922 } 923 924 if (prop == ZPROP_INVAL && zfs_prop_userquota(propname)) { 925 zfs_userquota_prop_t uqtype; 926 char newpropname[128]; 927 char domain[128]; 928 uint64_t rid; 929 uint64_t valary[3]; 930 931 if (userquota_propname_decode(propname, zoned, 932 &uqtype, domain, sizeof (domain), &rid) != 0) { 933 zfs_error_aux(hdl, 934 dgettext(TEXT_DOMAIN, 935 "'%s' has an invalid user/group name"), 936 propname); 937 (void) zfs_error(hdl, EZFS_BADPROP, errbuf); 938 goto error; 939 } 940 941 if (uqtype != ZFS_PROP_USERQUOTA && 942 uqtype != ZFS_PROP_GROUPQUOTA) { 943 zfs_error_aux(hdl, 944 dgettext(TEXT_DOMAIN, "'%s' is readonly"), 945 propname); 946 (void) zfs_error(hdl, EZFS_PROPREADONLY, 947 errbuf); 948 goto error; 949 } 950 951 if (nvpair_type(elem) == DATA_TYPE_STRING) { 952 (void) nvpair_value_string(elem, &strval); 953 if (strcmp(strval, "none") == 0) { 954 intval = 0; 955 } else if (zfs_nicestrtonum(hdl, 956 strval, &intval) != 0) { 957 (void) zfs_error(hdl, 958 EZFS_BADPROP, errbuf); 959 goto error; 960 } 961 } else if (nvpair_type(elem) == 962 DATA_TYPE_UINT64) { 963 (void) nvpair_value_uint64(elem, &intval); 964 if (intval == 0) { 965 zfs_error_aux(hdl, dgettext(TEXT_DOMAIN, 966 "use 'none' to disable " 967 "userquota/groupquota")); 968 goto error; 969 } 970 } else { 971 zfs_error_aux(hdl, dgettext(TEXT_DOMAIN, 972 "'%s' must be a number"), propname); 973 (void) zfs_error(hdl, EZFS_BADPROP, errbuf); 974 goto error; 975 } 976 977 /* 978 * Encode the prop name as 979 * userquota@<hex-rid>-domain, to make it easy 980 * for the kernel to decode. 981 */ 982 (void) snprintf(newpropname, sizeof (newpropname), 983 "%s%llx-%s", zfs_userquota_prop_prefixes[uqtype], 984 (longlong_t)rid, domain); 985 valary[0] = uqtype; 986 valary[1] = rid; 987 valary[2] = intval; 988 if (nvlist_add_uint64_array(ret, newpropname, 989 valary, 3) != 0) { 990 (void) no_memory(hdl); 991 goto error; 992 } 993 continue; 994 } else if (prop == ZPROP_INVAL && zfs_prop_written(propname)) { 995 zfs_error_aux(hdl, dgettext(TEXT_DOMAIN, 996 "'%s' is readonly"), 997 propname); 998 (void) zfs_error(hdl, EZFS_PROPREADONLY, errbuf); 999 goto error; 1000 } 1001 1002 if (prop == ZPROP_INVAL) { 1003 zfs_error_aux(hdl, dgettext(TEXT_DOMAIN, 1004 "invalid property '%s'"), propname); 1005 (void) zfs_error(hdl, EZFS_BADPROP, errbuf); 1006 goto error; 1007 } 1008 1009 if (!zfs_prop_valid_for_type(prop, type)) { 1010 zfs_error_aux(hdl, 1011 dgettext(TEXT_DOMAIN, "'%s' does not " 1012 "apply to datasets of this type"), propname); 1013 (void) zfs_error(hdl, EZFS_PROPTYPE, errbuf); 1014 goto error; 1015 } 1016 1017 if (zfs_prop_readonly(prop) && 1018 (!zfs_prop_setonce(prop) || zhp != NULL)) { 1019 zfs_error_aux(hdl, 1020 dgettext(TEXT_DOMAIN, "'%s' is readonly"), 1021 propname); 1022 (void) zfs_error(hdl, EZFS_PROPREADONLY, errbuf); 1023 goto error; 1024 } 1025 1026 if (zprop_parse_value(hdl, elem, prop, type, ret, 1027 &strval, &intval, errbuf) != 0) 1028 goto error; 1029 1030 /* 1031 * Perform some additional checks for specific properties. 1032 */ 1033 switch (prop) { 1034 case ZFS_PROP_VERSION: 1035 { 1036 int version; 1037 1038 if (zhp == NULL) 1039 break; 1040 version = zfs_prop_get_int(zhp, ZFS_PROP_VERSION); 1041 if (intval < version) { 1042 zfs_error_aux(hdl, dgettext(TEXT_DOMAIN, 1043 "Can not downgrade; already at version %u"), 1044 version); 1045 (void) zfs_error(hdl, EZFS_BADPROP, errbuf); 1046 goto error; 1047 } 1048 break; 1049 } 1050 1051 case ZFS_PROP_RECORDSIZE: 1052 case ZFS_PROP_VOLBLOCKSIZE: 1053 /* must be power of two within SPA_{MIN,MAX}BLOCKSIZE */ 1054 if (intval < SPA_MINBLOCKSIZE || 1055 intval > SPA_MAXBLOCKSIZE || !ISP2(intval)) { 1056 zfs_error_aux(hdl, dgettext(TEXT_DOMAIN, 1057 "'%s' must be power of 2 from %u " 1058 "to %uk"), propname, 1059 (uint_t)SPA_MINBLOCKSIZE, 1060 (uint_t)SPA_MAXBLOCKSIZE >> 10); 1061 (void) zfs_error(hdl, EZFS_BADPROP, errbuf); 1062 goto error; 1063 } 1064 break; 1065 1066 case ZFS_PROP_MLSLABEL: 1067 { 1068 /* 1069 * Verify the mlslabel string and convert to 1070 * internal hex label string. 1071 */ 1072 1073 m_label_t *new_sl; 1074 char *hex = NULL; /* internal label string */ 1075 1076 /* Default value is already OK. */ 1077 if (strcasecmp(strval, ZFS_MLSLABEL_DEFAULT) == 0) 1078 break; 1079 1080 /* Verify the label can be converted to binary form */ 1081 if (((new_sl = m_label_alloc(MAC_LABEL)) == NULL) || 1082 (str_to_label(strval, &new_sl, MAC_LABEL, 1083 L_NO_CORRECTION, NULL) == -1)) { 1084 goto badlabel; 1085 } 1086 1087 /* Now translate to hex internal label string */ 1088 if (label_to_str(new_sl, &hex, M_INTERNAL, 1089 DEF_NAMES) != 0) { 1090 if (hex) 1091 free(hex); 1092 goto badlabel; 1093 } 1094 m_label_free(new_sl); 1095 1096 /* If string is already in internal form, we're done. */ 1097 if (strcmp(strval, hex) == 0) { 1098 free(hex); 1099 break; 1100 } 1101 1102 /* Replace the label string with the internal form. */ 1103 (void) nvlist_remove(ret, zfs_prop_to_name(prop), 1104 DATA_TYPE_STRING); 1105 verify(nvlist_add_string(ret, zfs_prop_to_name(prop), 1106 hex) == 0); 1107 free(hex); 1108 1109 break; 1110 1111 badlabel: 1112 zfs_error_aux(hdl, dgettext(TEXT_DOMAIN, 1113 "invalid mlslabel '%s'"), strval); 1114 (void) zfs_error(hdl, EZFS_BADPROP, errbuf); 1115 m_label_free(new_sl); /* OK if null */ 1116 goto error; 1117 1118 } 1119 1120 case ZFS_PROP_MOUNTPOINT: 1121 { 1122 namecheck_err_t why; 1123 1124 if (strcmp(strval, ZFS_MOUNTPOINT_NONE) == 0 || 1125 strcmp(strval, ZFS_MOUNTPOINT_LEGACY) == 0) 1126 break; 1127 1128 if (mountpoint_namecheck(strval, &why)) { 1129 switch (why) { 1130 case NAME_ERR_LEADING_SLASH: 1131 zfs_error_aux(hdl, 1132 dgettext(TEXT_DOMAIN, 1133 "'%s' must be an absolute path, " 1134 "'none', or 'legacy'"), propname); 1135 break; 1136 case NAME_ERR_TOOLONG: 1137 zfs_error_aux(hdl, 1138 dgettext(TEXT_DOMAIN, 1139 "component of '%s' is too long"), 1140 propname); 1141 break; 1142 } 1143 (void) zfs_error(hdl, EZFS_BADPROP, errbuf); 1144 goto error; 1145 } 1146 } 1147 1148 /*FALLTHRU*/ 1149 1150 case ZFS_PROP_SHARESMB: 1151 case ZFS_PROP_SHARENFS: 1152 /* 1153 * For the mountpoint and sharenfs or sharesmb 1154 * properties, check if it can be set in a 1155 * global/non-global zone based on 1156 * the zoned property value: 1157 * 1158 * global zone non-global zone 1159 * -------------------------------------------------- 1160 * zoned=on mountpoint (no) mountpoint (yes) 1161 * sharenfs (no) sharenfs (no) 1162 * sharesmb (no) sharesmb (no) 1163 * 1164 * zoned=off mountpoint (yes) N/A 1165 * sharenfs (yes) 1166 * sharesmb (yes) 1167 */ 1168 if (zoned) { 1169 if (getzoneid() == GLOBAL_ZONEID) { 1170 zfs_error_aux(hdl, dgettext(TEXT_DOMAIN, 1171 "'%s' cannot be set on " 1172 "dataset in a non-global zone"), 1173 propname); 1174 (void) zfs_error(hdl, EZFS_ZONED, 1175 errbuf); 1176 goto error; 1177 } else if (prop == ZFS_PROP_SHARENFS || 1178 prop == ZFS_PROP_SHARESMB) { 1179 zfs_error_aux(hdl, dgettext(TEXT_DOMAIN, 1180 "'%s' cannot be set in " 1181 "a non-global zone"), propname); 1182 (void) zfs_error(hdl, EZFS_ZONED, 1183 errbuf); 1184 goto error; 1185 } 1186 } else if (getzoneid() != GLOBAL_ZONEID) { 1187 /* 1188 * If zoned property is 'off', this must be in 1189 * a global zone. If not, something is wrong. 1190 */ 1191 zfs_error_aux(hdl, dgettext(TEXT_DOMAIN, 1192 "'%s' cannot be set while dataset " 1193 "'zoned' property is set"), propname); 1194 (void) zfs_error(hdl, EZFS_ZONED, errbuf); 1195 goto error; 1196 } 1197 1198 /* 1199 * At this point, it is legitimate to set the 1200 * property. Now we want to make sure that the 1201 * property value is valid if it is sharenfs. 1202 */ 1203 if ((prop == ZFS_PROP_SHARENFS || 1204 prop == ZFS_PROP_SHARESMB) && 1205 strcmp(strval, "on") != 0 && 1206 strcmp(strval, "off") != 0) { 1207 zfs_share_proto_t proto; 1208 1209 if (prop == ZFS_PROP_SHARESMB) 1210 proto = PROTO_SMB; 1211 else 1212 proto = PROTO_NFS; 1213 1214 /* 1215 * Must be an valid sharing protocol 1216 * option string so init the libshare 1217 * in order to enable the parser and 1218 * then parse the options. We use the 1219 * control API since we don't care about 1220 * the current configuration and don't 1221 * want the overhead of loading it 1222 * until we actually do something. 1223 */ 1224 1225 if (zfs_init_libshare(hdl, 1226 SA_INIT_CONTROL_API) != SA_OK) { 1227 /* 1228 * An error occurred so we can't do 1229 * anything 1230 */ 1231 zfs_error_aux(hdl, dgettext(TEXT_DOMAIN, 1232 "'%s' cannot be set: problem " 1233 "in share initialization"), 1234 propname); 1235 (void) zfs_error(hdl, EZFS_BADPROP, 1236 errbuf); 1237 goto error; 1238 } 1239 1240 if (zfs_parse_options(strval, proto) != SA_OK) { 1241 /* 1242 * There was an error in parsing so 1243 * deal with it by issuing an error 1244 * message and leaving after 1245 * uninitializing the the libshare 1246 * interface. 1247 */ 1248 zfs_error_aux(hdl, dgettext(TEXT_DOMAIN, 1249 "'%s' cannot be set to invalid " 1250 "options"), propname); 1251 (void) zfs_error(hdl, EZFS_BADPROP, 1252 errbuf); 1253 zfs_uninit_libshare(hdl); 1254 goto error; 1255 } 1256 zfs_uninit_libshare(hdl); 1257 } 1258 1259 break; 1260 case ZFS_PROP_UTF8ONLY: 1261 chosen_utf = (int)intval; 1262 break; 1263 case ZFS_PROP_NORMALIZE: 1264 chosen_normal = (int)intval; 1265 break; 1266 } 1267 1268 /* 1269 * For changes to existing volumes, we have some additional 1270 * checks to enforce. 1271 */ 1272 if (type == ZFS_TYPE_VOLUME && zhp != NULL) { 1273 uint64_t volsize = zfs_prop_get_int(zhp, 1274 ZFS_PROP_VOLSIZE); 1275 uint64_t blocksize = zfs_prop_get_int(zhp, 1276 ZFS_PROP_VOLBLOCKSIZE); 1277 char buf[64]; 1278 1279 switch (prop) { 1280 case ZFS_PROP_RESERVATION: 1281 case ZFS_PROP_REFRESERVATION: 1282 if (intval > volsize) { 1283 zfs_error_aux(hdl, dgettext(TEXT_DOMAIN, 1284 "'%s' is greater than current " 1285 "volume size"), propname); 1286 (void) zfs_error(hdl, EZFS_BADPROP, 1287 errbuf); 1288 goto error; 1289 } 1290 break; 1291 1292 case ZFS_PROP_VOLSIZE: 1293 if (intval % blocksize != 0) { 1294 zfs_nicenum(blocksize, buf, 1295 sizeof (buf)); 1296 zfs_error_aux(hdl, dgettext(TEXT_DOMAIN, 1297 "'%s' must be a multiple of " 1298 "volume block size (%s)"), 1299 propname, buf); 1300 (void) zfs_error(hdl, EZFS_BADPROP, 1301 errbuf); 1302 goto error; 1303 } 1304 1305 if (intval == 0) { 1306 zfs_error_aux(hdl, dgettext(TEXT_DOMAIN, 1307 "'%s' cannot be zero"), 1308 propname); 1309 (void) zfs_error(hdl, EZFS_BADPROP, 1310 errbuf); 1311 goto error; 1312 } 1313 break; 1314 } 1315 } 1316 } 1317 1318 /* 1319 * If normalization was chosen, but no UTF8 choice was made, 1320 * enforce rejection of non-UTF8 names. 1321 * 1322 * If normalization was chosen, but rejecting non-UTF8 names 1323 * was explicitly not chosen, it is an error. 1324 */ 1325 if (chosen_normal > 0 && chosen_utf < 0) { 1326 if (nvlist_add_uint64(ret, 1327 zfs_prop_to_name(ZFS_PROP_UTF8ONLY), 1) != 0) { 1328 (void) no_memory(hdl); 1329 goto error; 1330 } 1331 } else if (chosen_normal > 0 && chosen_utf == 0) { 1332 zfs_error_aux(hdl, dgettext(TEXT_DOMAIN, 1333 "'%s' must be set 'on' if normalization chosen"), 1334 zfs_prop_to_name(ZFS_PROP_UTF8ONLY)); 1335 (void) zfs_error(hdl, EZFS_BADPROP, errbuf); 1336 goto error; 1337 } 1338 return (ret); 1339 1340 error: 1341 nvlist_free(ret); 1342 return (NULL); 1343 } 1344 1345 int 1346 zfs_add_synthetic_resv(zfs_handle_t *zhp, nvlist_t *nvl) 1347 { 1348 uint64_t old_volsize; 1349 uint64_t new_volsize; 1350 uint64_t old_reservation; 1351 uint64_t new_reservation; 1352 zfs_prop_t resv_prop; 1353 nvlist_t *props; 1354 1355 /* 1356 * If this is an existing volume, and someone is setting the volsize, 1357 * make sure that it matches the reservation, or add it if necessary. 1358 */ 1359 old_volsize = zfs_prop_get_int(zhp, ZFS_PROP_VOLSIZE); 1360 if (zfs_which_resv_prop(zhp, &resv_prop) < 0) 1361 return (-1); 1362 old_reservation = zfs_prop_get_int(zhp, resv_prop); 1363 1364 props = fnvlist_alloc(); 1365 fnvlist_add_uint64(props, zfs_prop_to_name(ZFS_PROP_VOLBLOCKSIZE), 1366 zfs_prop_get_int(zhp, ZFS_PROP_VOLBLOCKSIZE)); 1367 1368 if ((zvol_volsize_to_reservation(old_volsize, props) != 1369 old_reservation) || nvlist_exists(nvl, 1370 zfs_prop_to_name(resv_prop))) { 1371 fnvlist_free(props); 1372 return (0); 1373 } 1374 if (nvlist_lookup_uint64(nvl, zfs_prop_to_name(ZFS_PROP_VOLSIZE), 1375 &new_volsize) != 0) { 1376 fnvlist_free(props); 1377 return (-1); 1378 } 1379 new_reservation = zvol_volsize_to_reservation(new_volsize, props); 1380 fnvlist_free(props); 1381 1382 if (nvlist_add_uint64(nvl, zfs_prop_to_name(resv_prop), 1383 new_reservation) != 0) { 1384 (void) no_memory(zhp->zfs_hdl); 1385 return (-1); 1386 } 1387 return (1); 1388 } 1389 1390 void 1391 zfs_setprop_error(libzfs_handle_t *hdl, zfs_prop_t prop, int err, 1392 char *errbuf) 1393 { 1394 switch (err) { 1395 1396 case ENOSPC: 1397 /* 1398 * For quotas and reservations, ENOSPC indicates 1399 * something different; setting a quota or reservation 1400 * doesn't use any disk space. 1401 */ 1402 switch (prop) { 1403 case ZFS_PROP_QUOTA: 1404 case ZFS_PROP_REFQUOTA: 1405 zfs_error_aux(hdl, dgettext(TEXT_DOMAIN, 1406 "size is less than current used or " 1407 "reserved space")); 1408 (void) zfs_error(hdl, EZFS_PROPSPACE, errbuf); 1409 break; 1410 1411 case ZFS_PROP_RESERVATION: 1412 case ZFS_PROP_REFRESERVATION: 1413 zfs_error_aux(hdl, dgettext(TEXT_DOMAIN, 1414 "size is greater than available space")); 1415 (void) zfs_error(hdl, EZFS_PROPSPACE, errbuf); 1416 break; 1417 1418 default: 1419 (void) zfs_standard_error(hdl, err, errbuf); 1420 break; 1421 } 1422 break; 1423 1424 case EBUSY: 1425 (void) zfs_standard_error(hdl, EBUSY, errbuf); 1426 break; 1427 1428 case EROFS: 1429 (void) zfs_error(hdl, EZFS_DSREADONLY, errbuf); 1430 break; 1431 1432 case ENOTSUP: 1433 zfs_error_aux(hdl, dgettext(TEXT_DOMAIN, 1434 "pool and or dataset must be upgraded to set this " 1435 "property or value")); 1436 (void) zfs_error(hdl, EZFS_BADVERSION, errbuf); 1437 break; 1438 1439 case ERANGE: 1440 if (prop == ZFS_PROP_COMPRESSION) { 1441 (void) zfs_error_aux(hdl, dgettext(TEXT_DOMAIN, 1442 "property setting is not allowed on " 1443 "bootable datasets")); 1444 (void) zfs_error(hdl, EZFS_NOTSUP, errbuf); 1445 } else { 1446 (void) zfs_standard_error(hdl, err, errbuf); 1447 } 1448 break; 1449 1450 case EINVAL: 1451 if (prop == ZPROP_INVAL) { 1452 (void) zfs_error(hdl, EZFS_BADPROP, errbuf); 1453 } else { 1454 (void) zfs_standard_error(hdl, err, errbuf); 1455 } 1456 break; 1457 1458 case EOVERFLOW: 1459 /* 1460 * This platform can't address a volume this big. 1461 */ 1462 #ifdef _ILP32 1463 if (prop == ZFS_PROP_VOLSIZE) { 1464 (void) zfs_error(hdl, EZFS_VOLTOOBIG, errbuf); 1465 break; 1466 } 1467 #endif 1468 /* FALLTHROUGH */ 1469 default: 1470 (void) zfs_standard_error(hdl, err, errbuf); 1471 } 1472 } 1473 1474 /* 1475 * Given a property name and value, set the property for the given dataset. 1476 */ 1477 int 1478 zfs_prop_set(zfs_handle_t *zhp, const char *propname, const char *propval) 1479 { 1480 zfs_cmd_t zc = { 0 }; 1481 int ret = -1; 1482 prop_changelist_t *cl = NULL; 1483 char errbuf[1024]; 1484 libzfs_handle_t *hdl = zhp->zfs_hdl; 1485 nvlist_t *nvl = NULL, *realprops; 1486 zfs_prop_t prop; 1487 boolean_t do_prefix = B_TRUE; 1488 int added_resv; 1489 1490 (void) snprintf(errbuf, sizeof (errbuf), 1491 dgettext(TEXT_DOMAIN, "cannot set property for '%s'"), 1492 zhp->zfs_name); 1493 1494 if (nvlist_alloc(&nvl, NV_UNIQUE_NAME, 0) != 0 || 1495 nvlist_add_string(nvl, propname, propval) != 0) { 1496 (void) no_memory(hdl); 1497 goto error; 1498 } 1499 1500 if ((realprops = zfs_valid_proplist(hdl, zhp->zfs_type, nvl, 1501 zfs_prop_get_int(zhp, ZFS_PROP_ZONED), zhp, errbuf)) == NULL) 1502 goto error; 1503 1504 nvlist_free(nvl); 1505 nvl = realprops; 1506 1507 prop = zfs_name_to_prop(propname); 1508 1509 if (prop == ZFS_PROP_VOLSIZE) { 1510 if ((added_resv = zfs_add_synthetic_resv(zhp, nvl)) == -1) 1511 goto error; 1512 } 1513 1514 if ((cl = changelist_gather(zhp, prop, 0, 0)) == NULL) 1515 goto error; 1516 1517 if (prop == ZFS_PROP_MOUNTPOINT && changelist_haszonedchild(cl)) { 1518 zfs_error_aux(hdl, dgettext(TEXT_DOMAIN, 1519 "child dataset with inherited mountpoint is used " 1520 "in a non-global zone")); 1521 ret = zfs_error(hdl, EZFS_ZONED, errbuf); 1522 goto error; 1523 } 1524 1525 /* 1526 * We don't want to unmount & remount the dataset when changing 1527 * its canmount property to 'on' or 'noauto'. We only use 1528 * the changelist logic to unmount when setting canmount=off. 1529 */ 1530 if (prop == ZFS_PROP_CANMOUNT) { 1531 uint64_t idx; 1532 int err = zprop_string_to_index(prop, propval, &idx, 1533 ZFS_TYPE_DATASET); 1534 if (err == 0 && idx != ZFS_CANMOUNT_OFF) 1535 do_prefix = B_FALSE; 1536 } 1537 1538 if (do_prefix && (ret = changelist_prefix(cl)) != 0) 1539 goto error; 1540 1541 /* 1542 * Execute the corresponding ioctl() to set this property. 1543 */ 1544 (void) strlcpy(zc.zc_name, zhp->zfs_name, sizeof (zc.zc_name)); 1545 1546 if (zcmd_write_src_nvlist(hdl, &zc, nvl) != 0) 1547 goto error; 1548 1549 ret = zfs_ioctl(hdl, ZFS_IOC_SET_PROP, &zc); 1550 1551 if (ret != 0) { 1552 zfs_setprop_error(hdl, prop, errno, errbuf); 1553 if (added_resv && errno == ENOSPC) { 1554 /* clean up the volsize property we tried to set */ 1555 uint64_t old_volsize = zfs_prop_get_int(zhp, 1556 ZFS_PROP_VOLSIZE); 1557 nvlist_free(nvl); 1558 zcmd_free_nvlists(&zc); 1559 if (nvlist_alloc(&nvl, NV_UNIQUE_NAME, 0) != 0) 1560 goto error; 1561 if (nvlist_add_uint64(nvl, 1562 zfs_prop_to_name(ZFS_PROP_VOLSIZE), 1563 old_volsize) != 0) 1564 goto error; 1565 if (zcmd_write_src_nvlist(hdl, &zc, nvl) != 0) 1566 goto error; 1567 (void) zfs_ioctl(hdl, ZFS_IOC_SET_PROP, &zc); 1568 } 1569 } else { 1570 if (do_prefix) 1571 ret = changelist_postfix(cl); 1572 1573 /* 1574 * Refresh the statistics so the new property value 1575 * is reflected. 1576 */ 1577 if (ret == 0) 1578 (void) get_stats(zhp); 1579 } 1580 1581 error: 1582 nvlist_free(nvl); 1583 zcmd_free_nvlists(&zc); 1584 if (cl) 1585 changelist_free(cl); 1586 return (ret); 1587 } 1588 1589 /* 1590 * Given a property, inherit the value from the parent dataset, or if received 1591 * is TRUE, revert to the received value, if any. 1592 */ 1593 int 1594 zfs_prop_inherit(zfs_handle_t *zhp, const char *propname, boolean_t received) 1595 { 1596 zfs_cmd_t zc = { 0 }; 1597 int ret; 1598 prop_changelist_t *cl; 1599 libzfs_handle_t *hdl = zhp->zfs_hdl; 1600 char errbuf[1024]; 1601 zfs_prop_t prop; 1602 1603 (void) snprintf(errbuf, sizeof (errbuf), dgettext(TEXT_DOMAIN, 1604 "cannot inherit %s for '%s'"), propname, zhp->zfs_name); 1605 1606 zc.zc_cookie = received; 1607 if ((prop = zfs_name_to_prop(propname)) == ZPROP_INVAL) { 1608 /* 1609 * For user properties, the amount of work we have to do is very 1610 * small, so just do it here. 1611 */ 1612 if (!zfs_prop_user(propname)) { 1613 zfs_error_aux(hdl, dgettext(TEXT_DOMAIN, 1614 "invalid property")); 1615 return (zfs_error(hdl, EZFS_BADPROP, errbuf)); 1616 } 1617 1618 (void) strlcpy(zc.zc_name, zhp->zfs_name, sizeof (zc.zc_name)); 1619 (void) strlcpy(zc.zc_value, propname, sizeof (zc.zc_value)); 1620 1621 if (zfs_ioctl(zhp->zfs_hdl, ZFS_IOC_INHERIT_PROP, &zc) != 0) 1622 return (zfs_standard_error(hdl, errno, errbuf)); 1623 1624 return (0); 1625 } 1626 1627 /* 1628 * Verify that this property is inheritable. 1629 */ 1630 if (zfs_prop_readonly(prop)) 1631 return (zfs_error(hdl, EZFS_PROPREADONLY, errbuf)); 1632 1633 if (!zfs_prop_inheritable(prop) && !received) 1634 return (zfs_error(hdl, EZFS_PROPNONINHERIT, errbuf)); 1635 1636 /* 1637 * Check to see if the value applies to this type 1638 */ 1639 if (!zfs_prop_valid_for_type(prop, zhp->zfs_type)) 1640 return (zfs_error(hdl, EZFS_PROPTYPE, errbuf)); 1641 1642 /* 1643 * Normalize the name, to get rid of shorthand abbreviations. 1644 */ 1645 propname = zfs_prop_to_name(prop); 1646 (void) strlcpy(zc.zc_name, zhp->zfs_name, sizeof (zc.zc_name)); 1647 (void) strlcpy(zc.zc_value, propname, sizeof (zc.zc_value)); 1648 1649 if (prop == ZFS_PROP_MOUNTPOINT && getzoneid() == GLOBAL_ZONEID && 1650 zfs_prop_get_int(zhp, ZFS_PROP_ZONED)) { 1651 zfs_error_aux(hdl, dgettext(TEXT_DOMAIN, 1652 "dataset is used in a non-global zone")); 1653 return (zfs_error(hdl, EZFS_ZONED, errbuf)); 1654 } 1655 1656 /* 1657 * Determine datasets which will be affected by this change, if any. 1658 */ 1659 if ((cl = changelist_gather(zhp, prop, 0, 0)) == NULL) 1660 return (-1); 1661 1662 if (prop == ZFS_PROP_MOUNTPOINT && changelist_haszonedchild(cl)) { 1663 zfs_error_aux(hdl, dgettext(TEXT_DOMAIN, 1664 "child dataset with inherited mountpoint is used " 1665 "in a non-global zone")); 1666 ret = zfs_error(hdl, EZFS_ZONED, errbuf); 1667 goto error; 1668 } 1669 1670 if ((ret = changelist_prefix(cl)) != 0) 1671 goto error; 1672 1673 if ((ret = zfs_ioctl(zhp->zfs_hdl, ZFS_IOC_INHERIT_PROP, &zc)) != 0) { 1674 return (zfs_standard_error(hdl, errno, errbuf)); 1675 } else { 1676 1677 if ((ret = changelist_postfix(cl)) != 0) 1678 goto error; 1679 1680 /* 1681 * Refresh the statistics so the new property is reflected. 1682 */ 1683 (void) get_stats(zhp); 1684 } 1685 1686 error: 1687 changelist_free(cl); 1688 return (ret); 1689 } 1690 1691 /* 1692 * True DSL properties are stored in an nvlist. The following two functions 1693 * extract them appropriately. 1694 */ 1695 static uint64_t 1696 getprop_uint64(zfs_handle_t *zhp, zfs_prop_t prop, char **source) 1697 { 1698 nvlist_t *nv; 1699 uint64_t value; 1700 1701 *source = NULL; 1702 if (nvlist_lookup_nvlist(zhp->zfs_props, 1703 zfs_prop_to_name(prop), &nv) == 0) { 1704 verify(nvlist_lookup_uint64(nv, ZPROP_VALUE, &value) == 0); 1705 (void) nvlist_lookup_string(nv, ZPROP_SOURCE, source); 1706 } else { 1707 verify(!zhp->zfs_props_table || 1708 zhp->zfs_props_table[prop] == B_TRUE); 1709 value = zfs_prop_default_numeric(prop); 1710 *source = ""; 1711 } 1712 1713 return (value); 1714 } 1715 1716 static char * 1717 getprop_string(zfs_handle_t *zhp, zfs_prop_t prop, char **source) 1718 { 1719 nvlist_t *nv; 1720 char *value; 1721 1722 *source = NULL; 1723 if (nvlist_lookup_nvlist(zhp->zfs_props, 1724 zfs_prop_to_name(prop), &nv) == 0) { 1725 verify(nvlist_lookup_string(nv, ZPROP_VALUE, &value) == 0); 1726 (void) nvlist_lookup_string(nv, ZPROP_SOURCE, source); 1727 } else { 1728 verify(!zhp->zfs_props_table || 1729 zhp->zfs_props_table[prop] == B_TRUE); 1730 if ((value = (char *)zfs_prop_default_string(prop)) == NULL) 1731 value = ""; 1732 *source = ""; 1733 } 1734 1735 return (value); 1736 } 1737 1738 static boolean_t 1739 zfs_is_recvd_props_mode(zfs_handle_t *zhp) 1740 { 1741 return (zhp->zfs_props == zhp->zfs_recvd_props); 1742 } 1743 1744 static void 1745 zfs_set_recvd_props_mode(zfs_handle_t *zhp, uint64_t *cookie) 1746 { 1747 *cookie = (uint64_t)(uintptr_t)zhp->zfs_props; 1748 zhp->zfs_props = zhp->zfs_recvd_props; 1749 } 1750 1751 static void 1752 zfs_unset_recvd_props_mode(zfs_handle_t *zhp, uint64_t *cookie) 1753 { 1754 zhp->zfs_props = (nvlist_t *)(uintptr_t)*cookie; 1755 *cookie = 0; 1756 } 1757 1758 /* 1759 * Internal function for getting a numeric property. Both zfs_prop_get() and 1760 * zfs_prop_get_int() are built using this interface. 1761 * 1762 * Certain properties can be overridden using 'mount -o'. In this case, scan 1763 * the contents of the /etc/mnttab entry, searching for the appropriate options. 1764 * If they differ from the on-disk values, report the current values and mark 1765 * the source "temporary". 1766 */ 1767 static int 1768 get_numeric_property(zfs_handle_t *zhp, zfs_prop_t prop, zprop_source_t *src, 1769 char **source, uint64_t *val) 1770 { 1771 zfs_cmd_t zc = { 0 }; 1772 nvlist_t *zplprops = NULL; 1773 struct mnttab mnt; 1774 char *mntopt_on = NULL; 1775 char *mntopt_off = NULL; 1776 boolean_t received = zfs_is_recvd_props_mode(zhp); 1777 1778 *source = NULL; 1779 1780 switch (prop) { 1781 case ZFS_PROP_ATIME: 1782 mntopt_on = MNTOPT_ATIME; 1783 mntopt_off = MNTOPT_NOATIME; 1784 break; 1785 1786 case ZFS_PROP_DEVICES: 1787 mntopt_on = MNTOPT_DEVICES; 1788 mntopt_off = MNTOPT_NODEVICES; 1789 break; 1790 1791 case ZFS_PROP_EXEC: 1792 mntopt_on = MNTOPT_EXEC; 1793 mntopt_off = MNTOPT_NOEXEC; 1794 break; 1795 1796 case ZFS_PROP_READONLY: 1797 mntopt_on = MNTOPT_RO; 1798 mntopt_off = MNTOPT_RW; 1799 break; 1800 1801 case ZFS_PROP_SETUID: 1802 mntopt_on = MNTOPT_SETUID; 1803 mntopt_off = MNTOPT_NOSETUID; 1804 break; 1805 1806 case ZFS_PROP_XATTR: 1807 mntopt_on = MNTOPT_XATTR; 1808 mntopt_off = MNTOPT_NOXATTR; 1809 break; 1810 1811 case ZFS_PROP_NBMAND: 1812 mntopt_on = MNTOPT_NBMAND; 1813 mntopt_off = MNTOPT_NONBMAND; 1814 break; 1815 } 1816 1817 /* 1818 * Because looking up the mount options is potentially expensive 1819 * (iterating over all of /etc/mnttab), we defer its calculation until 1820 * we're looking up a property which requires its presence. 1821 */ 1822 if (!zhp->zfs_mntcheck && 1823 (mntopt_on != NULL || prop == ZFS_PROP_MOUNTED)) { 1824 libzfs_handle_t *hdl = zhp->zfs_hdl; 1825 struct mnttab entry; 1826 1827 if (libzfs_mnttab_find(hdl, zhp->zfs_name, &entry) == 0) { 1828 zhp->zfs_mntopts = zfs_strdup(hdl, 1829 entry.mnt_mntopts); 1830 if (zhp->zfs_mntopts == NULL) 1831 return (-1); 1832 } 1833 1834 zhp->zfs_mntcheck = B_TRUE; 1835 } 1836 1837 if (zhp->zfs_mntopts == NULL) 1838 mnt.mnt_mntopts = ""; 1839 else 1840 mnt.mnt_mntopts = zhp->zfs_mntopts; 1841 1842 switch (prop) { 1843 case ZFS_PROP_ATIME: 1844 case ZFS_PROP_DEVICES: 1845 case ZFS_PROP_EXEC: 1846 case ZFS_PROP_READONLY: 1847 case ZFS_PROP_SETUID: 1848 case ZFS_PROP_XATTR: 1849 case ZFS_PROP_NBMAND: 1850 *val = getprop_uint64(zhp, prop, source); 1851 1852 if (received) 1853 break; 1854 1855 if (hasmntopt(&mnt, mntopt_on) && !*val) { 1856 *val = B_TRUE; 1857 if (src) 1858 *src = ZPROP_SRC_TEMPORARY; 1859 } else if (hasmntopt(&mnt, mntopt_off) && *val) { 1860 *val = B_FALSE; 1861 if (src) 1862 *src = ZPROP_SRC_TEMPORARY; 1863 } 1864 break; 1865 1866 case ZFS_PROP_CANMOUNT: 1867 case ZFS_PROP_VOLSIZE: 1868 case ZFS_PROP_QUOTA: 1869 case ZFS_PROP_REFQUOTA: 1870 case ZFS_PROP_RESERVATION: 1871 case ZFS_PROP_REFRESERVATION: 1872 case ZFS_PROP_FILESYSTEM_LIMIT: 1873 case ZFS_PROP_SNAPSHOT_LIMIT: 1874 case ZFS_PROP_FILESYSTEM_COUNT: 1875 case ZFS_PROP_SNAPSHOT_COUNT: 1876 *val = getprop_uint64(zhp, prop, source); 1877 1878 if (*source == NULL) { 1879 /* not default, must be local */ 1880 *source = zhp->zfs_name; 1881 } 1882 break; 1883 1884 case ZFS_PROP_MOUNTED: 1885 *val = (zhp->zfs_mntopts != NULL); 1886 break; 1887 1888 case ZFS_PROP_NUMCLONES: 1889 *val = zhp->zfs_dmustats.dds_num_clones; 1890 break; 1891 1892 case ZFS_PROP_VERSION: 1893 case ZFS_PROP_NORMALIZE: 1894 case ZFS_PROP_UTF8ONLY: 1895 case ZFS_PROP_CASE: 1896 if (!zfs_prop_valid_for_type(prop, zhp->zfs_head_type) || 1897 zcmd_alloc_dst_nvlist(zhp->zfs_hdl, &zc, 0) != 0) 1898 return (-1); 1899 (void) strlcpy(zc.zc_name, zhp->zfs_name, sizeof (zc.zc_name)); 1900 if (zfs_ioctl(zhp->zfs_hdl, ZFS_IOC_OBJSET_ZPLPROPS, &zc)) { 1901 zcmd_free_nvlists(&zc); 1902 return (-1); 1903 } 1904 if (zcmd_read_dst_nvlist(zhp->zfs_hdl, &zc, &zplprops) != 0 || 1905 nvlist_lookup_uint64(zplprops, zfs_prop_to_name(prop), 1906 val) != 0) { 1907 zcmd_free_nvlists(&zc); 1908 return (-1); 1909 } 1910 if (zplprops) 1911 nvlist_free(zplprops); 1912 zcmd_free_nvlists(&zc); 1913 break; 1914 1915 case ZFS_PROP_INCONSISTENT: 1916 *val = zhp->zfs_dmustats.dds_inconsistent; 1917 break; 1918 1919 default: 1920 switch (zfs_prop_get_type(prop)) { 1921 case PROP_TYPE_NUMBER: 1922 case PROP_TYPE_INDEX: 1923 *val = getprop_uint64(zhp, prop, source); 1924 /* 1925 * If we tried to use a default value for a 1926 * readonly property, it means that it was not 1927 * present. 1928 */ 1929 if (zfs_prop_readonly(prop) && 1930 *source != NULL && (*source)[0] == '\0') { 1931 *source = NULL; 1932 } 1933 break; 1934 1935 case PROP_TYPE_STRING: 1936 default: 1937 zfs_error_aux(zhp->zfs_hdl, dgettext(TEXT_DOMAIN, 1938 "cannot get non-numeric property")); 1939 return (zfs_error(zhp->zfs_hdl, EZFS_BADPROP, 1940 dgettext(TEXT_DOMAIN, "internal error"))); 1941 } 1942 } 1943 1944 return (0); 1945 } 1946 1947 /* 1948 * Calculate the source type, given the raw source string. 1949 */ 1950 static void 1951 get_source(zfs_handle_t *zhp, zprop_source_t *srctype, char *source, 1952 char *statbuf, size_t statlen) 1953 { 1954 if (statbuf == NULL || *srctype == ZPROP_SRC_TEMPORARY) 1955 return; 1956 1957 if (source == NULL) { 1958 *srctype = ZPROP_SRC_NONE; 1959 } else if (source[0] == '\0') { 1960 *srctype = ZPROP_SRC_DEFAULT; 1961 } else if (strstr(source, ZPROP_SOURCE_VAL_RECVD) != NULL) { 1962 *srctype = ZPROP_SRC_RECEIVED; 1963 } else { 1964 if (strcmp(source, zhp->zfs_name) == 0) { 1965 *srctype = ZPROP_SRC_LOCAL; 1966 } else { 1967 (void) strlcpy(statbuf, source, statlen); 1968 *srctype = ZPROP_SRC_INHERITED; 1969 } 1970 } 1971 1972 } 1973 1974 int 1975 zfs_prop_get_recvd(zfs_handle_t *zhp, const char *propname, char *propbuf, 1976 size_t proplen, boolean_t literal) 1977 { 1978 zfs_prop_t prop; 1979 int err = 0; 1980 1981 if (zhp->zfs_recvd_props == NULL) 1982 if (get_recvd_props_ioctl(zhp) != 0) 1983 return (-1); 1984 1985 prop = zfs_name_to_prop(propname); 1986 1987 if (prop != ZPROP_INVAL) { 1988 uint64_t cookie; 1989 if (!nvlist_exists(zhp->zfs_recvd_props, propname)) 1990 return (-1); 1991 zfs_set_recvd_props_mode(zhp, &cookie); 1992 err = zfs_prop_get(zhp, prop, propbuf, proplen, 1993 NULL, NULL, 0, literal); 1994 zfs_unset_recvd_props_mode(zhp, &cookie); 1995 } else { 1996 nvlist_t *propval; 1997 char *recvdval; 1998 if (nvlist_lookup_nvlist(zhp->zfs_recvd_props, 1999 propname, &propval) != 0) 2000 return (-1); 2001 verify(nvlist_lookup_string(propval, ZPROP_VALUE, 2002 &recvdval) == 0); 2003 (void) strlcpy(propbuf, recvdval, proplen); 2004 } 2005 2006 return (err == 0 ? 0 : -1); 2007 } 2008 2009 static int 2010 get_clones_string(zfs_handle_t *zhp, char *propbuf, size_t proplen) 2011 { 2012 nvlist_t *value; 2013 nvpair_t *pair; 2014 2015 value = zfs_get_clones_nvl(zhp); 2016 if (value == NULL) 2017 return (-1); 2018 2019 propbuf[0] = '\0'; 2020 for (pair = nvlist_next_nvpair(value, NULL); pair != NULL; 2021 pair = nvlist_next_nvpair(value, pair)) { 2022 if (propbuf[0] != '\0') 2023 (void) strlcat(propbuf, ",", proplen); 2024 (void) strlcat(propbuf, nvpair_name(pair), proplen); 2025 } 2026 2027 return (0); 2028 } 2029 2030 struct get_clones_arg { 2031 uint64_t numclones; 2032 nvlist_t *value; 2033 const char *origin; 2034 char buf[ZFS_MAXNAMELEN]; 2035 }; 2036 2037 int 2038 get_clones_cb(zfs_handle_t *zhp, void *arg) 2039 { 2040 struct get_clones_arg *gca = arg; 2041 2042 if (gca->numclones == 0) { 2043 zfs_close(zhp); 2044 return (0); 2045 } 2046 2047 if (zfs_prop_get(zhp, ZFS_PROP_ORIGIN, gca->buf, sizeof (gca->buf), 2048 NULL, NULL, 0, B_TRUE) != 0) 2049 goto out; 2050 if (strcmp(gca->buf, gca->origin) == 0) { 2051 fnvlist_add_boolean(gca->value, zfs_get_name(zhp)); 2052 gca->numclones--; 2053 } 2054 2055 out: 2056 (void) zfs_iter_children(zhp, get_clones_cb, gca); 2057 zfs_close(zhp); 2058 return (0); 2059 } 2060 2061 nvlist_t * 2062 zfs_get_clones_nvl(zfs_handle_t *zhp) 2063 { 2064 nvlist_t *nv, *value; 2065 2066 if (nvlist_lookup_nvlist(zhp->zfs_props, 2067 zfs_prop_to_name(ZFS_PROP_CLONES), &nv) != 0) { 2068 struct get_clones_arg gca; 2069 2070 /* 2071 * if this is a snapshot, then the kernel wasn't able 2072 * to get the clones. Do it by slowly iterating. 2073 */ 2074 if (zhp->zfs_type != ZFS_TYPE_SNAPSHOT) 2075 return (NULL); 2076 if (nvlist_alloc(&nv, NV_UNIQUE_NAME, 0) != 0) 2077 return (NULL); 2078 if (nvlist_alloc(&value, NV_UNIQUE_NAME, 0) != 0) { 2079 nvlist_free(nv); 2080 return (NULL); 2081 } 2082 2083 gca.numclones = zfs_prop_get_int(zhp, ZFS_PROP_NUMCLONES); 2084 gca.value = value; 2085 gca.origin = zhp->zfs_name; 2086 2087 if (gca.numclones != 0) { 2088 zfs_handle_t *root; 2089 char pool[ZFS_MAXNAMELEN]; 2090 char *cp = pool; 2091 2092 /* get the pool name */ 2093 (void) strlcpy(pool, zhp->zfs_name, sizeof (pool)); 2094 (void) strsep(&cp, "/@"); 2095 root = zfs_open(zhp->zfs_hdl, pool, 2096 ZFS_TYPE_FILESYSTEM); 2097 2098 (void) get_clones_cb(root, &gca); 2099 } 2100 2101 if (gca.numclones != 0 || 2102 nvlist_add_nvlist(nv, ZPROP_VALUE, value) != 0 || 2103 nvlist_add_nvlist(zhp->zfs_props, 2104 zfs_prop_to_name(ZFS_PROP_CLONES), nv) != 0) { 2105 nvlist_free(nv); 2106 nvlist_free(value); 2107 return (NULL); 2108 } 2109 nvlist_free(nv); 2110 nvlist_free(value); 2111 verify(0 == nvlist_lookup_nvlist(zhp->zfs_props, 2112 zfs_prop_to_name(ZFS_PROP_CLONES), &nv)); 2113 } 2114 2115 verify(nvlist_lookup_nvlist(nv, ZPROP_VALUE, &value) == 0); 2116 2117 return (value); 2118 } 2119 2120 /* 2121 * Retrieve a property from the given object. If 'literal' is specified, then 2122 * numbers are left as exact values. Otherwise, numbers are converted to a 2123 * human-readable form. 2124 * 2125 * Returns 0 on success, or -1 on error. 2126 */ 2127 int 2128 zfs_prop_get(zfs_handle_t *zhp, zfs_prop_t prop, char *propbuf, size_t proplen, 2129 zprop_source_t *src, char *statbuf, size_t statlen, boolean_t literal) 2130 { 2131 char *source = NULL; 2132 uint64_t val; 2133 char *str; 2134 const char *strval; 2135 boolean_t received = zfs_is_recvd_props_mode(zhp); 2136 2137 /* 2138 * Check to see if this property applies to our object 2139 */ 2140 if (!zfs_prop_valid_for_type(prop, zhp->zfs_type)) 2141 return (-1); 2142 2143 if (received && zfs_prop_readonly(prop)) 2144 return (-1); 2145 2146 if (src) 2147 *src = ZPROP_SRC_NONE; 2148 2149 switch (prop) { 2150 case ZFS_PROP_CREATION: 2151 /* 2152 * 'creation' is a time_t stored in the statistics. We convert 2153 * this into a string unless 'literal' is specified. 2154 */ 2155 { 2156 val = getprop_uint64(zhp, prop, &source); 2157 time_t time = (time_t)val; 2158 struct tm t; 2159 2160 if (literal || 2161 localtime_r(&time, &t) == NULL || 2162 strftime(propbuf, proplen, "%a %b %e %k:%M %Y", 2163 &t) == 0) 2164 (void) snprintf(propbuf, proplen, "%llu", val); 2165 } 2166 break; 2167 2168 case ZFS_PROP_MOUNTPOINT: 2169 /* 2170 * Getting the precise mountpoint can be tricky. 2171 * 2172 * - for 'none' or 'legacy', return those values. 2173 * - for inherited mountpoints, we want to take everything 2174 * after our ancestor and append it to the inherited value. 2175 * 2176 * If the pool has an alternate root, we want to prepend that 2177 * root to any values we return. 2178 */ 2179 2180 str = getprop_string(zhp, prop, &source); 2181 2182 if (str[0] == '/') { 2183 char buf[MAXPATHLEN]; 2184 char *root = buf; 2185 const char *relpath; 2186 2187 /* 2188 * If we inherit the mountpoint, even from a dataset 2189 * with a received value, the source will be the path of 2190 * the dataset we inherit from. If source is 2191 * ZPROP_SOURCE_VAL_RECVD, the received value is not 2192 * inherited. 2193 */ 2194 if (strcmp(source, ZPROP_SOURCE_VAL_RECVD) == 0) { 2195 relpath = ""; 2196 } else { 2197 relpath = zhp->zfs_name + strlen(source); 2198 if (relpath[0] == '/') 2199 relpath++; 2200 } 2201 2202 if ((zpool_get_prop(zhp->zpool_hdl, 2203 ZPOOL_PROP_ALTROOT, buf, MAXPATHLEN, NULL, 2204 B_FALSE)) || (strcmp(root, "-") == 0)) 2205 root[0] = '\0'; 2206 /* 2207 * Special case an alternate root of '/'. This will 2208 * avoid having multiple leading slashes in the 2209 * mountpoint path. 2210 */ 2211 if (strcmp(root, "/") == 0) 2212 root++; 2213 2214 /* 2215 * If the mountpoint is '/' then skip over this 2216 * if we are obtaining either an alternate root or 2217 * an inherited mountpoint. 2218 */ 2219 if (str[1] == '\0' && (root[0] != '\0' || 2220 relpath[0] != '\0')) 2221 str++; 2222 2223 if (relpath[0] == '\0') 2224 (void) snprintf(propbuf, proplen, "%s%s", 2225 root, str); 2226 else 2227 (void) snprintf(propbuf, proplen, "%s%s%s%s", 2228 root, str, relpath[0] == '@' ? "" : "/", 2229 relpath); 2230 } else { 2231 /* 'legacy' or 'none' */ 2232 (void) strlcpy(propbuf, str, proplen); 2233 } 2234 2235 break; 2236 2237 case ZFS_PROP_ORIGIN: 2238 (void) strlcpy(propbuf, getprop_string(zhp, prop, &source), 2239 proplen); 2240 /* 2241 * If there is no parent at all, return failure to indicate that 2242 * it doesn't apply to this dataset. 2243 */ 2244 if (propbuf[0] == '\0') 2245 return (-1); 2246 break; 2247 2248 case ZFS_PROP_CLONES: 2249 if (get_clones_string(zhp, propbuf, proplen) != 0) 2250 return (-1); 2251 break; 2252 2253 case ZFS_PROP_QUOTA: 2254 case ZFS_PROP_REFQUOTA: 2255 case ZFS_PROP_RESERVATION: 2256 case ZFS_PROP_REFRESERVATION: 2257 2258 if (get_numeric_property(zhp, prop, src, &source, &val) != 0) 2259 return (-1); 2260 2261 /* 2262 * If quota or reservation is 0, we translate this into 'none' 2263 * (unless literal is set), and indicate that it's the default 2264 * value. Otherwise, we print the number nicely and indicate 2265 * that its set locally. 2266 */ 2267 if (val == 0) { 2268 if (literal) 2269 (void) strlcpy(propbuf, "0", proplen); 2270 else 2271 (void) strlcpy(propbuf, "none", proplen); 2272 } else { 2273 if (literal) 2274 (void) snprintf(propbuf, proplen, "%llu", 2275 (u_longlong_t)val); 2276 else 2277 zfs_nicenum(val, propbuf, proplen); 2278 } 2279 break; 2280 2281 case ZFS_PROP_FILESYSTEM_LIMIT: 2282 case ZFS_PROP_SNAPSHOT_LIMIT: 2283 case ZFS_PROP_FILESYSTEM_COUNT: 2284 case ZFS_PROP_SNAPSHOT_COUNT: 2285 2286 if (get_numeric_property(zhp, prop, src, &source, &val) != 0) 2287 return (-1); 2288 2289 /* 2290 * If limit is UINT64_MAX, we translate this into 'none' (unless 2291 * literal is set), and indicate that it's the default value. 2292 * Otherwise, we print the number nicely and indicate that it's 2293 * set locally. 2294 */ 2295 if (literal) { 2296 (void) snprintf(propbuf, proplen, "%llu", 2297 (u_longlong_t)val); 2298 } else if (val == UINT64_MAX) { 2299 (void) strlcpy(propbuf, "none", proplen); 2300 } else { 2301 zfs_nicenum(val, propbuf, proplen); 2302 } 2303 break; 2304 2305 case ZFS_PROP_REFRATIO: 2306 case ZFS_PROP_COMPRESSRATIO: 2307 if (get_numeric_property(zhp, prop, src, &source, &val) != 0) 2308 return (-1); 2309 (void) snprintf(propbuf, proplen, "%llu.%02llux", 2310 (u_longlong_t)(val / 100), 2311 (u_longlong_t)(val % 100)); 2312 break; 2313 2314 case ZFS_PROP_TYPE: 2315 switch (zhp->zfs_type) { 2316 case ZFS_TYPE_FILESYSTEM: 2317 str = "filesystem"; 2318 break; 2319 case ZFS_TYPE_VOLUME: 2320 str = "volume"; 2321 break; 2322 case ZFS_TYPE_SNAPSHOT: 2323 str = "snapshot"; 2324 break; 2325 case ZFS_TYPE_BOOKMARK: 2326 str = "bookmark"; 2327 break; 2328 default: 2329 abort(); 2330 } 2331 (void) snprintf(propbuf, proplen, "%s", str); 2332 break; 2333 2334 case ZFS_PROP_MOUNTED: 2335 /* 2336 * The 'mounted' property is a pseudo-property that described 2337 * whether the filesystem is currently mounted. Even though 2338 * it's a boolean value, the typical values of "on" and "off" 2339 * don't make sense, so we translate to "yes" and "no". 2340 */ 2341 if (get_numeric_property(zhp, ZFS_PROP_MOUNTED, 2342 src, &source, &val) != 0) 2343 return (-1); 2344 if (val) 2345 (void) strlcpy(propbuf, "yes", proplen); 2346 else 2347 (void) strlcpy(propbuf, "no", proplen); 2348 break; 2349 2350 case ZFS_PROP_NAME: 2351 /* 2352 * The 'name' property is a pseudo-property derived from the 2353 * dataset name. It is presented as a real property to simplify 2354 * consumers. 2355 */ 2356 (void) strlcpy(propbuf, zhp->zfs_name, proplen); 2357 break; 2358 2359 case ZFS_PROP_MLSLABEL: 2360 { 2361 m_label_t *new_sl = NULL; 2362 char *ascii = NULL; /* human readable label */ 2363 2364 (void) strlcpy(propbuf, 2365 getprop_string(zhp, prop, &source), proplen); 2366 2367 if (literal || (strcasecmp(propbuf, 2368 ZFS_MLSLABEL_DEFAULT) == 0)) 2369 break; 2370 2371 /* 2372 * Try to translate the internal hex string to 2373 * human-readable output. If there are any 2374 * problems just use the hex string. 2375 */ 2376 2377 if (str_to_label(propbuf, &new_sl, MAC_LABEL, 2378 L_NO_CORRECTION, NULL) == -1) { 2379 m_label_free(new_sl); 2380 break; 2381 } 2382 2383 if (label_to_str(new_sl, &ascii, M_LABEL, 2384 DEF_NAMES) != 0) { 2385 if (ascii) 2386 free(ascii); 2387 m_label_free(new_sl); 2388 break; 2389 } 2390 m_label_free(new_sl); 2391 2392 (void) strlcpy(propbuf, ascii, proplen); 2393 free(ascii); 2394 } 2395 break; 2396 2397 case ZFS_PROP_GUID: 2398 /* 2399 * GUIDs are stored as numbers, but they are identifiers. 2400 * We don't want them to be pretty printed, because pretty 2401 * printing mangles the ID into a truncated and useless value. 2402 */ 2403 if (get_numeric_property(zhp, prop, src, &source, &val) != 0) 2404 return (-1); 2405 (void) snprintf(propbuf, proplen, "%llu", (u_longlong_t)val); 2406 break; 2407 2408 default: 2409 switch (zfs_prop_get_type(prop)) { 2410 case PROP_TYPE_NUMBER: 2411 if (get_numeric_property(zhp, prop, src, 2412 &source, &val) != 0) 2413 return (-1); 2414 if (literal) 2415 (void) snprintf(propbuf, proplen, "%llu", 2416 (u_longlong_t)val); 2417 else 2418 zfs_nicenum(val, propbuf, proplen); 2419 break; 2420 2421 case PROP_TYPE_STRING: 2422 (void) strlcpy(propbuf, 2423 getprop_string(zhp, prop, &source), proplen); 2424 break; 2425 2426 case PROP_TYPE_INDEX: 2427 if (get_numeric_property(zhp, prop, src, 2428 &source, &val) != 0) 2429 return (-1); 2430 if (zfs_prop_index_to_string(prop, val, &strval) != 0) 2431 return (-1); 2432 (void) strlcpy(propbuf, strval, proplen); 2433 break; 2434 2435 default: 2436 abort(); 2437 } 2438 } 2439 2440 get_source(zhp, src, source, statbuf, statlen); 2441 2442 return (0); 2443 } 2444 2445 /* 2446 * Utility function to get the given numeric property. Does no validation that 2447 * the given property is the appropriate type; should only be used with 2448 * hard-coded property types. 2449 */ 2450 uint64_t 2451 zfs_prop_get_int(zfs_handle_t *zhp, zfs_prop_t prop) 2452 { 2453 char *source; 2454 uint64_t val; 2455 2456 (void) get_numeric_property(zhp, prop, NULL, &source, &val); 2457 2458 return (val); 2459 } 2460 2461 int 2462 zfs_prop_set_int(zfs_handle_t *zhp, zfs_prop_t prop, uint64_t val) 2463 { 2464 char buf[64]; 2465 2466 (void) snprintf(buf, sizeof (buf), "%llu", (longlong_t)val); 2467 return (zfs_prop_set(zhp, zfs_prop_to_name(prop), buf)); 2468 } 2469 2470 /* 2471 * Similar to zfs_prop_get(), but returns the value as an integer. 2472 */ 2473 int 2474 zfs_prop_get_numeric(zfs_handle_t *zhp, zfs_prop_t prop, uint64_t *value, 2475 zprop_source_t *src, char *statbuf, size_t statlen) 2476 { 2477 char *source; 2478 2479 /* 2480 * Check to see if this property applies to our object 2481 */ 2482 if (!zfs_prop_valid_for_type(prop, zhp->zfs_type)) { 2483 return (zfs_error_fmt(zhp->zfs_hdl, EZFS_PROPTYPE, 2484 dgettext(TEXT_DOMAIN, "cannot get property '%s'"), 2485 zfs_prop_to_name(prop))); 2486 } 2487 2488 if (src) 2489 *src = ZPROP_SRC_NONE; 2490 2491 if (get_numeric_property(zhp, prop, src, &source, value) != 0) 2492 return (-1); 2493 2494 get_source(zhp, src, source, statbuf, statlen); 2495 2496 return (0); 2497 } 2498 2499 static int 2500 idmap_id_to_numeric_domain_rid(uid_t id, boolean_t isuser, 2501 char **domainp, idmap_rid_t *ridp) 2502 { 2503 idmap_get_handle_t *get_hdl = NULL; 2504 idmap_stat status; 2505 int err = EINVAL; 2506 2507 if (idmap_get_create(&get_hdl) != IDMAP_SUCCESS) 2508 goto out; 2509 2510 if (isuser) { 2511 err = idmap_get_sidbyuid(get_hdl, id, 2512 IDMAP_REQ_FLG_USE_CACHE, domainp, ridp, &status); 2513 } else { 2514 err = idmap_get_sidbygid(get_hdl, id, 2515 IDMAP_REQ_FLG_USE_CACHE, domainp, ridp, &status); 2516 } 2517 if (err == IDMAP_SUCCESS && 2518 idmap_get_mappings(get_hdl) == IDMAP_SUCCESS && 2519 status == IDMAP_SUCCESS) 2520 err = 0; 2521 else 2522 err = EINVAL; 2523 out: 2524 if (get_hdl) 2525 idmap_get_destroy(get_hdl); 2526 return (err); 2527 } 2528 2529 /* 2530 * convert the propname into parameters needed by kernel 2531 * Eg: userquota@ahrens -> ZFS_PROP_USERQUOTA, "", 126829 2532 * Eg: userused@matt@domain -> ZFS_PROP_USERUSED, "S-1-123-456", 789 2533 */ 2534 static int 2535 userquota_propname_decode(const char *propname, boolean_t zoned, 2536 zfs_userquota_prop_t *typep, char *domain, int domainlen, uint64_t *ridp) 2537 { 2538 zfs_userquota_prop_t type; 2539 char *cp, *end; 2540 char *numericsid = NULL; 2541 boolean_t isuser; 2542 2543 domain[0] = '\0'; 2544 2545 /* Figure out the property type ({user|group}{quota|space}) */ 2546 for (type = 0; type < ZFS_NUM_USERQUOTA_PROPS; type++) { 2547 if (strncmp(propname, zfs_userquota_prop_prefixes[type], 2548 strlen(zfs_userquota_prop_prefixes[type])) == 0) 2549 break; 2550 } 2551 if (type == ZFS_NUM_USERQUOTA_PROPS) 2552 return (EINVAL); 2553 *typep = type; 2554 2555 isuser = (type == ZFS_PROP_USERQUOTA || 2556 type == ZFS_PROP_USERUSED); 2557 2558 cp = strchr(propname, '@') + 1; 2559 2560 if (strchr(cp, '@')) { 2561 /* 2562 * It's a SID name (eg "user@domain") that needs to be 2563 * turned into S-1-domainID-RID. 2564 */ 2565 directory_error_t e; 2566 if (zoned && getzoneid() == GLOBAL_ZONEID) 2567 return (ENOENT); 2568 if (isuser) { 2569 e = directory_sid_from_user_name(NULL, 2570 cp, &numericsid); 2571 } else { 2572 e = directory_sid_from_group_name(NULL, 2573 cp, &numericsid); 2574 } 2575 if (e != NULL) { 2576 directory_error_free(e); 2577 return (ENOENT); 2578 } 2579 if (numericsid == NULL) 2580 return (ENOENT); 2581 cp = numericsid; 2582 /* will be further decoded below */ 2583 } 2584 2585 if (strncmp(cp, "S-1-", 4) == 0) { 2586 /* It's a numeric SID (eg "S-1-234-567-89") */ 2587 (void) strlcpy(domain, cp, domainlen); 2588 cp = strrchr(domain, '-'); 2589 *cp = '\0'; 2590 cp++; 2591 2592 errno = 0; 2593 *ridp = strtoull(cp, &end, 10); 2594 if (numericsid) { 2595 free(numericsid); 2596 numericsid = NULL; 2597 } 2598 if (errno != 0 || *end != '\0') 2599 return (EINVAL); 2600 } else if (!isdigit(*cp)) { 2601 /* 2602 * It's a user/group name (eg "user") that needs to be 2603 * turned into a uid/gid 2604 */ 2605 if (zoned && getzoneid() == GLOBAL_ZONEID) 2606 return (ENOENT); 2607 if (isuser) { 2608 struct passwd *pw; 2609 pw = getpwnam(cp); 2610 if (pw == NULL) 2611 return (ENOENT); 2612 *ridp = pw->pw_uid; 2613 } else { 2614 struct group *gr; 2615 gr = getgrnam(cp); 2616 if (gr == NULL) 2617 return (ENOENT); 2618 *ridp = gr->gr_gid; 2619 } 2620 } else { 2621 /* It's a user/group ID (eg "12345"). */ 2622 uid_t id = strtoul(cp, &end, 10); 2623 idmap_rid_t rid; 2624 char *mapdomain; 2625 2626 if (*end != '\0') 2627 return (EINVAL); 2628 if (id > MAXUID) { 2629 /* It's an ephemeral ID. */ 2630 if (idmap_id_to_numeric_domain_rid(id, isuser, 2631 &mapdomain, &rid) != 0) 2632 return (ENOENT); 2633 (void) strlcpy(domain, mapdomain, domainlen); 2634 *ridp = rid; 2635 } else { 2636 *ridp = id; 2637 } 2638 } 2639 2640 ASSERT3P(numericsid, ==, NULL); 2641 return (0); 2642 } 2643 2644 static int 2645 zfs_prop_get_userquota_common(zfs_handle_t *zhp, const char *propname, 2646 uint64_t *propvalue, zfs_userquota_prop_t *typep) 2647 { 2648 int err; 2649 zfs_cmd_t zc = { 0 }; 2650 2651 (void) strlcpy(zc.zc_name, zhp->zfs_name, sizeof (zc.zc_name)); 2652 2653 err = userquota_propname_decode(propname, 2654 zfs_prop_get_int(zhp, ZFS_PROP_ZONED), 2655 typep, zc.zc_value, sizeof (zc.zc_value), &zc.zc_guid); 2656 zc.zc_objset_type = *typep; 2657 if (err) 2658 return (err); 2659 2660 err = ioctl(zhp->zfs_hdl->libzfs_fd, ZFS_IOC_USERSPACE_ONE, &zc); 2661 if (err) 2662 return (err); 2663 2664 *propvalue = zc.zc_cookie; 2665 return (0); 2666 } 2667 2668 int 2669 zfs_prop_get_userquota_int(zfs_handle_t *zhp, const char *propname, 2670 uint64_t *propvalue) 2671 { 2672 zfs_userquota_prop_t type; 2673 2674 return (zfs_prop_get_userquota_common(zhp, propname, propvalue, 2675 &type)); 2676 } 2677 2678 int 2679 zfs_prop_get_userquota(zfs_handle_t *zhp, const char *propname, 2680 char *propbuf, int proplen, boolean_t literal) 2681 { 2682 int err; 2683 uint64_t propvalue; 2684 zfs_userquota_prop_t type; 2685 2686 err = zfs_prop_get_userquota_common(zhp, propname, &propvalue, 2687 &type); 2688 2689 if (err) 2690 return (err); 2691 2692 if (literal) { 2693 (void) snprintf(propbuf, proplen, "%llu", propvalue); 2694 } else if (propvalue == 0 && 2695 (type == ZFS_PROP_USERQUOTA || type == ZFS_PROP_GROUPQUOTA)) { 2696 (void) strlcpy(propbuf, "none", proplen); 2697 } else { 2698 zfs_nicenum(propvalue, propbuf, proplen); 2699 } 2700 return (0); 2701 } 2702 2703 int 2704 zfs_prop_get_written_int(zfs_handle_t *zhp, const char *propname, 2705 uint64_t *propvalue) 2706 { 2707 int err; 2708 zfs_cmd_t zc = { 0 }; 2709 const char *snapname; 2710 2711 (void) strlcpy(zc.zc_name, zhp->zfs_name, sizeof (zc.zc_name)); 2712 2713 snapname = strchr(propname, '@') + 1; 2714 if (strchr(snapname, '@')) { 2715 (void) strlcpy(zc.zc_value, snapname, sizeof (zc.zc_value)); 2716 } else { 2717 /* snapname is the short name, append it to zhp's fsname */ 2718 char *cp; 2719 2720 (void) strlcpy(zc.zc_value, zhp->zfs_name, 2721 sizeof (zc.zc_value)); 2722 cp = strchr(zc.zc_value, '@'); 2723 if (cp != NULL) 2724 *cp = '\0'; 2725 (void) strlcat(zc.zc_value, "@", sizeof (zc.zc_value)); 2726 (void) strlcat(zc.zc_value, snapname, sizeof (zc.zc_value)); 2727 } 2728 2729 err = ioctl(zhp->zfs_hdl->libzfs_fd, ZFS_IOC_SPACE_WRITTEN, &zc); 2730 if (err) 2731 return (err); 2732 2733 *propvalue = zc.zc_cookie; 2734 return (0); 2735 } 2736 2737 int 2738 zfs_prop_get_written(zfs_handle_t *zhp, const char *propname, 2739 char *propbuf, int proplen, boolean_t literal) 2740 { 2741 int err; 2742 uint64_t propvalue; 2743 2744 err = zfs_prop_get_written_int(zhp, propname, &propvalue); 2745 2746 if (err) 2747 return (err); 2748 2749 if (literal) { 2750 (void) snprintf(propbuf, proplen, "%llu", propvalue); 2751 } else { 2752 zfs_nicenum(propvalue, propbuf, proplen); 2753 } 2754 return (0); 2755 } 2756 2757 /* 2758 * Returns the name of the given zfs handle. 2759 */ 2760 const char * 2761 zfs_get_name(const zfs_handle_t *zhp) 2762 { 2763 return (zhp->zfs_name); 2764 } 2765 2766 /* 2767 * Returns the type of the given zfs handle. 2768 */ 2769 zfs_type_t 2770 zfs_get_type(const zfs_handle_t *zhp) 2771 { 2772 return (zhp->zfs_type); 2773 } 2774 2775 /* 2776 * Is one dataset name a child dataset of another? 2777 * 2778 * Needs to handle these cases: 2779 * Dataset 1 "a/foo" "a/foo" "a/foo" "a/foo" 2780 * Dataset 2 "a/fo" "a/foobar" "a/bar/baz" "a/foo/bar" 2781 * Descendant? No. No. No. Yes. 2782 */ 2783 static boolean_t 2784 is_descendant(const char *ds1, const char *ds2) 2785 { 2786 size_t d1len = strlen(ds1); 2787 2788 /* ds2 can't be a descendant if it's smaller */ 2789 if (strlen(ds2) < d1len) 2790 return (B_FALSE); 2791 2792 /* otherwise, compare strings and verify that there's a '/' char */ 2793 return (ds2[d1len] == '/' && (strncmp(ds1, ds2, d1len) == 0)); 2794 } 2795 2796 /* 2797 * Given a complete name, return just the portion that refers to the parent. 2798 * Will return -1 if there is no parent (path is just the name of the 2799 * pool). 2800 */ 2801 static int 2802 parent_name(const char *path, char *buf, size_t buflen) 2803 { 2804 char *slashp; 2805 2806 (void) strlcpy(buf, path, buflen); 2807 2808 if ((slashp = strrchr(buf, '/')) == NULL) 2809 return (-1); 2810 *slashp = '\0'; 2811 2812 return (0); 2813 } 2814 2815 /* 2816 * If accept_ancestor is false, then check to make sure that the given path has 2817 * a parent, and that it exists. If accept_ancestor is true, then find the 2818 * closest existing ancestor for the given path. In prefixlen return the 2819 * length of already existing prefix of the given path. We also fetch the 2820 * 'zoned' property, which is used to validate property settings when creating 2821 * new datasets. 2822 */ 2823 static int 2824 check_parents(libzfs_handle_t *hdl, const char *path, uint64_t *zoned, 2825 boolean_t accept_ancestor, int *prefixlen) 2826 { 2827 zfs_cmd_t zc = { 0 }; 2828 char parent[ZFS_MAXNAMELEN]; 2829 char *slash; 2830 zfs_handle_t *zhp; 2831 char errbuf[1024]; 2832 uint64_t is_zoned; 2833 2834 (void) snprintf(errbuf, sizeof (errbuf), 2835 dgettext(TEXT_DOMAIN, "cannot create '%s'"), path); 2836 2837 /* get parent, and check to see if this is just a pool */ 2838 if (parent_name(path, parent, sizeof (parent)) != 0) { 2839 zfs_error_aux(hdl, dgettext(TEXT_DOMAIN, 2840 "missing dataset name")); 2841 return (zfs_error(hdl, EZFS_INVALIDNAME, errbuf)); 2842 } 2843 2844 /* check to see if the pool exists */ 2845 if ((slash = strchr(parent, '/')) == NULL) 2846 slash = parent + strlen(parent); 2847 (void) strncpy(zc.zc_name, parent, slash - parent); 2848 zc.zc_name[slash - parent] = '\0'; 2849 if (ioctl(hdl->libzfs_fd, ZFS_IOC_OBJSET_STATS, &zc) != 0 && 2850 errno == ENOENT) { 2851 zfs_error_aux(hdl, dgettext(TEXT_DOMAIN, 2852 "no such pool '%s'"), zc.zc_name); 2853 return (zfs_error(hdl, EZFS_NOENT, errbuf)); 2854 } 2855 2856 /* check to see if the parent dataset exists */ 2857 while ((zhp = make_dataset_handle(hdl, parent)) == NULL) { 2858 if (errno == ENOENT && accept_ancestor) { 2859 /* 2860 * Go deeper to find an ancestor, give up on top level. 2861 */ 2862 if (parent_name(parent, parent, sizeof (parent)) != 0) { 2863 zfs_error_aux(hdl, dgettext(TEXT_DOMAIN, 2864 "no such pool '%s'"), zc.zc_name); 2865 return (zfs_error(hdl, EZFS_NOENT, errbuf)); 2866 } 2867 } else if (errno == ENOENT) { 2868 zfs_error_aux(hdl, dgettext(TEXT_DOMAIN, 2869 "parent does not exist")); 2870 return (zfs_error(hdl, EZFS_NOENT, errbuf)); 2871 } else 2872 return (zfs_standard_error(hdl, errno, errbuf)); 2873 } 2874 2875 is_zoned = zfs_prop_get_int(zhp, ZFS_PROP_ZONED); 2876 if (zoned != NULL) 2877 *zoned = is_zoned; 2878 2879 /* we are in a non-global zone, but parent is in the global zone */ 2880 if (getzoneid() != GLOBAL_ZONEID && !is_zoned) { 2881 (void) zfs_standard_error(hdl, EPERM, errbuf); 2882 zfs_close(zhp); 2883 return (-1); 2884 } 2885 2886 /* make sure parent is a filesystem */ 2887 if (zfs_get_type(zhp) != ZFS_TYPE_FILESYSTEM) { 2888 zfs_error_aux(hdl, dgettext(TEXT_DOMAIN, 2889 "parent is not a filesystem")); 2890 (void) zfs_error(hdl, EZFS_BADTYPE, errbuf); 2891 zfs_close(zhp); 2892 return (-1); 2893 } 2894 2895 zfs_close(zhp); 2896 if (prefixlen != NULL) 2897 *prefixlen = strlen(parent); 2898 return (0); 2899 } 2900 2901 /* 2902 * Finds whether the dataset of the given type(s) exists. 2903 */ 2904 boolean_t 2905 zfs_dataset_exists(libzfs_handle_t *hdl, const char *path, zfs_type_t types) 2906 { 2907 zfs_handle_t *zhp; 2908 2909 if (!zfs_validate_name(hdl, path, types, B_FALSE)) 2910 return (B_FALSE); 2911 2912 /* 2913 * Try to get stats for the dataset, which will tell us if it exists. 2914 */ 2915 if ((zhp = make_dataset_handle(hdl, path)) != NULL) { 2916 int ds_type = zhp->zfs_type; 2917 2918 zfs_close(zhp); 2919 if (types & ds_type) 2920 return (B_TRUE); 2921 } 2922 return (B_FALSE); 2923 } 2924 2925 /* 2926 * Given a path to 'target', create all the ancestors between 2927 * the prefixlen portion of the path, and the target itself. 2928 * Fail if the initial prefixlen-ancestor does not already exist. 2929 */ 2930 int 2931 create_parents(libzfs_handle_t *hdl, char *target, int prefixlen) 2932 { 2933 zfs_handle_t *h; 2934 char *cp; 2935 const char *opname; 2936 2937 /* make sure prefix exists */ 2938 cp = target + prefixlen; 2939 if (*cp != '/') { 2940 assert(strchr(cp, '/') == NULL); 2941 h = zfs_open(hdl, target, ZFS_TYPE_FILESYSTEM); 2942 } else { 2943 *cp = '\0'; 2944 h = zfs_open(hdl, target, ZFS_TYPE_FILESYSTEM); 2945 *cp = '/'; 2946 } 2947 if (h == NULL) 2948 return (-1); 2949 zfs_close(h); 2950 2951 /* 2952 * Attempt to create, mount, and share any ancestor filesystems, 2953 * up to the prefixlen-long one. 2954 */ 2955 for (cp = target + prefixlen + 1; 2956 cp = strchr(cp, '/'); *cp = '/', cp++) { 2957 2958 *cp = '\0'; 2959 2960 h = make_dataset_handle(hdl, target); 2961 if (h) { 2962 /* it already exists, nothing to do here */ 2963 zfs_close(h); 2964 continue; 2965 } 2966 2967 if (zfs_create(hdl, target, ZFS_TYPE_FILESYSTEM, 2968 NULL) != 0) { 2969 opname = dgettext(TEXT_DOMAIN, "create"); 2970 goto ancestorerr; 2971 } 2972 2973 h = zfs_open(hdl, target, ZFS_TYPE_FILESYSTEM); 2974 if (h == NULL) { 2975 opname = dgettext(TEXT_DOMAIN, "open"); 2976 goto ancestorerr; 2977 } 2978 2979 if (zfs_mount(h, NULL, 0) != 0) { 2980 opname = dgettext(TEXT_DOMAIN, "mount"); 2981 goto ancestorerr; 2982 } 2983 2984 if (zfs_share(h) != 0) { 2985 opname = dgettext(TEXT_DOMAIN, "share"); 2986 goto ancestorerr; 2987 } 2988 2989 zfs_close(h); 2990 } 2991 2992 return (0); 2993 2994 ancestorerr: 2995 zfs_error_aux(hdl, dgettext(TEXT_DOMAIN, 2996 "failed to %s ancestor '%s'"), opname, target); 2997 return (-1); 2998 } 2999 3000 /* 3001 * Creates non-existing ancestors of the given path. 3002 */ 3003 int 3004 zfs_create_ancestors(libzfs_handle_t *hdl, const char *path) 3005 { 3006 int prefix; 3007 char *path_copy; 3008 int rc; 3009 3010 if (check_parents(hdl, path, NULL, B_TRUE, &prefix) != 0) 3011 return (-1); 3012 3013 if ((path_copy = strdup(path)) != NULL) { 3014 rc = create_parents(hdl, path_copy, prefix); 3015 free(path_copy); 3016 } 3017 if (path_copy == NULL || rc != 0) 3018 return (-1); 3019 3020 return (0); 3021 } 3022 3023 /* 3024 * Create a new filesystem or volume. 3025 */ 3026 int 3027 zfs_create(libzfs_handle_t *hdl, const char *path, zfs_type_t type, 3028 nvlist_t *props) 3029 { 3030 int ret; 3031 uint64_t size = 0; 3032 uint64_t blocksize = zfs_prop_default_numeric(ZFS_PROP_VOLBLOCKSIZE); 3033 char errbuf[1024]; 3034 uint64_t zoned; 3035 dmu_objset_type_t ost; 3036 3037 (void) snprintf(errbuf, sizeof (errbuf), dgettext(TEXT_DOMAIN, 3038 "cannot create '%s'"), path); 3039 3040 /* validate the path, taking care to note the extended error message */ 3041 if (!zfs_validate_name(hdl, path, type, B_TRUE)) 3042 return (zfs_error(hdl, EZFS_INVALIDNAME, errbuf)); 3043 3044 /* validate parents exist */ 3045 if (check_parents(hdl, path, &zoned, B_FALSE, NULL) != 0) 3046 return (-1); 3047 3048 /* 3049 * The failure modes when creating a dataset of a different type over 3050 * one that already exists is a little strange. In particular, if you 3051 * try to create a dataset on top of an existing dataset, the ioctl() 3052 * will return ENOENT, not EEXIST. To prevent this from happening, we 3053 * first try to see if the dataset exists. 3054 */ 3055 if (zfs_dataset_exists(hdl, path, ZFS_TYPE_DATASET)) { 3056 zfs_error_aux(hdl, dgettext(TEXT_DOMAIN, 3057 "dataset already exists")); 3058 return (zfs_error(hdl, EZFS_EXISTS, errbuf)); 3059 } 3060 3061 if (type == ZFS_TYPE_VOLUME) 3062 ost = DMU_OST_ZVOL; 3063 else 3064 ost = DMU_OST_ZFS; 3065 3066 if (props && (props = zfs_valid_proplist(hdl, type, props, 3067 zoned, NULL, errbuf)) == 0) 3068 return (-1); 3069 3070 if (type == ZFS_TYPE_VOLUME) { 3071 /* 3072 * If we are creating a volume, the size and block size must 3073 * satisfy a few restraints. First, the blocksize must be a 3074 * valid block size between SPA_{MIN,MAX}BLOCKSIZE. Second, the 3075 * volsize must be a multiple of the block size, and cannot be 3076 * zero. 3077 */ 3078 if (props == NULL || nvlist_lookup_uint64(props, 3079 zfs_prop_to_name(ZFS_PROP_VOLSIZE), &size) != 0) { 3080 nvlist_free(props); 3081 zfs_error_aux(hdl, dgettext(TEXT_DOMAIN, 3082 "missing volume size")); 3083 return (zfs_error(hdl, EZFS_BADPROP, errbuf)); 3084 } 3085 3086 if ((ret = nvlist_lookup_uint64(props, 3087 zfs_prop_to_name(ZFS_PROP_VOLBLOCKSIZE), 3088 &blocksize)) != 0) { 3089 if (ret == ENOENT) { 3090 blocksize = zfs_prop_default_numeric( 3091 ZFS_PROP_VOLBLOCKSIZE); 3092 } else { 3093 nvlist_free(props); 3094 zfs_error_aux(hdl, dgettext(TEXT_DOMAIN, 3095 "missing volume block size")); 3096 return (zfs_error(hdl, EZFS_BADPROP, errbuf)); 3097 } 3098 } 3099 3100 if (size == 0) { 3101 nvlist_free(props); 3102 zfs_error_aux(hdl, dgettext(TEXT_DOMAIN, 3103 "volume size cannot be zero")); 3104 return (zfs_error(hdl, EZFS_BADPROP, errbuf)); 3105 } 3106 3107 if (size % blocksize != 0) { 3108 nvlist_free(props); 3109 zfs_error_aux(hdl, dgettext(TEXT_DOMAIN, 3110 "volume size must be a multiple of volume block " 3111 "size")); 3112 return (zfs_error(hdl, EZFS_BADPROP, errbuf)); 3113 } 3114 } 3115 3116 /* create the dataset */ 3117 ret = lzc_create(path, ost, props); 3118 nvlist_free(props); 3119 3120 /* check for failure */ 3121 if (ret != 0) { 3122 char parent[ZFS_MAXNAMELEN]; 3123 (void) parent_name(path, parent, sizeof (parent)); 3124 3125 switch (errno) { 3126 case ENOENT: 3127 zfs_error_aux(hdl, dgettext(TEXT_DOMAIN, 3128 "no such parent '%s'"), parent); 3129 return (zfs_error(hdl, EZFS_NOENT, errbuf)); 3130 3131 case EINVAL: 3132 zfs_error_aux(hdl, dgettext(TEXT_DOMAIN, 3133 "parent '%s' is not a filesystem"), parent); 3134 return (zfs_error(hdl, EZFS_BADTYPE, errbuf)); 3135 3136 case EDOM: 3137 zfs_error_aux(hdl, dgettext(TEXT_DOMAIN, 3138 "volume block size must be power of 2 from " 3139 "%u to %uk"), 3140 (uint_t)SPA_MINBLOCKSIZE, 3141 (uint_t)SPA_MAXBLOCKSIZE >> 10); 3142 3143 return (zfs_error(hdl, EZFS_BADPROP, errbuf)); 3144 3145 case ENOTSUP: 3146 zfs_error_aux(hdl, dgettext(TEXT_DOMAIN, 3147 "pool must be upgraded to set this " 3148 "property or value")); 3149 return (zfs_error(hdl, EZFS_BADVERSION, errbuf)); 3150 #ifdef _ILP32 3151 case EOVERFLOW: 3152 /* 3153 * This platform can't address a volume this big. 3154 */ 3155 if (type == ZFS_TYPE_VOLUME) 3156 return (zfs_error(hdl, EZFS_VOLTOOBIG, 3157 errbuf)); 3158 #endif 3159 /* FALLTHROUGH */ 3160 default: 3161 return (zfs_standard_error(hdl, errno, errbuf)); 3162 } 3163 } 3164 3165 return (0); 3166 } 3167 3168 /* 3169 * Destroys the given dataset. The caller must make sure that the filesystem 3170 * isn't mounted, and that there are no active dependents. If the file system 3171 * does not exist this function does nothing. 3172 */ 3173 int 3174 zfs_destroy(zfs_handle_t *zhp, boolean_t defer) 3175 { 3176 zfs_cmd_t zc = { 0 }; 3177 3178 if (zhp->zfs_type == ZFS_TYPE_BOOKMARK) { 3179 nvlist_t *nv = fnvlist_alloc(); 3180 fnvlist_add_boolean(nv, zhp->zfs_name); 3181 int error = lzc_destroy_bookmarks(nv, NULL); 3182 fnvlist_free(nv); 3183 if (error != 0) { 3184 return (zfs_standard_error_fmt(zhp->zfs_hdl, errno, 3185 dgettext(TEXT_DOMAIN, "cannot destroy '%s'"), 3186 zhp->zfs_name)); 3187 } 3188 return (0); 3189 } 3190 3191 (void) strlcpy(zc.zc_name, zhp->zfs_name, sizeof (zc.zc_name)); 3192 3193 if (ZFS_IS_VOLUME(zhp)) { 3194 zc.zc_objset_type = DMU_OST_ZVOL; 3195 } else { 3196 zc.zc_objset_type = DMU_OST_ZFS; 3197 } 3198 3199 zc.zc_defer_destroy = defer; 3200 if (zfs_ioctl(zhp->zfs_hdl, ZFS_IOC_DESTROY, &zc) != 0 && 3201 errno != ENOENT) { 3202 return (zfs_standard_error_fmt(zhp->zfs_hdl, errno, 3203 dgettext(TEXT_DOMAIN, "cannot destroy '%s'"), 3204 zhp->zfs_name)); 3205 } 3206 3207 remove_mountpoint(zhp); 3208 3209 return (0); 3210 } 3211 3212 struct destroydata { 3213 nvlist_t *nvl; 3214 const char *snapname; 3215 }; 3216 3217 static int 3218 zfs_check_snap_cb(zfs_handle_t *zhp, void *arg) 3219 { 3220 struct destroydata *dd = arg; 3221 char name[ZFS_MAXNAMELEN]; 3222 int rv = 0; 3223 3224 (void) snprintf(name, sizeof (name), 3225 "%s@%s", zhp->zfs_name, dd->snapname); 3226 3227 if (lzc_exists(name)) 3228 verify(nvlist_add_boolean(dd->nvl, name) == 0); 3229 3230 rv = zfs_iter_filesystems(zhp, zfs_check_snap_cb, dd); 3231 zfs_close(zhp); 3232 return (rv); 3233 } 3234 3235 /* 3236 * Destroys all snapshots with the given name in zhp & descendants. 3237 */ 3238 int 3239 zfs_destroy_snaps(zfs_handle_t *zhp, char *snapname, boolean_t defer) 3240 { 3241 int ret; 3242 struct destroydata dd = { 0 }; 3243 3244 dd.snapname = snapname; 3245 verify(nvlist_alloc(&dd.nvl, NV_UNIQUE_NAME, 0) == 0); 3246 (void) zfs_check_snap_cb(zfs_handle_dup(zhp), &dd); 3247 3248 if (nvlist_empty(dd.nvl)) { 3249 ret = zfs_standard_error_fmt(zhp->zfs_hdl, ENOENT, 3250 dgettext(TEXT_DOMAIN, "cannot destroy '%s@%s'"), 3251 zhp->zfs_name, snapname); 3252 } else { 3253 ret = zfs_destroy_snaps_nvl(zhp->zfs_hdl, dd.nvl, defer); 3254 } 3255 nvlist_free(dd.nvl); 3256 return (ret); 3257 } 3258 3259 /* 3260 * Destroys all the snapshots named in the nvlist. 3261 */ 3262 int 3263 zfs_destroy_snaps_nvl(libzfs_handle_t *hdl, nvlist_t *snaps, boolean_t defer) 3264 { 3265 int ret; 3266 nvlist_t *errlist; 3267 3268 ret = lzc_destroy_snaps(snaps, defer, &errlist); 3269 3270 if (ret == 0) 3271 return (0); 3272 3273 if (nvlist_empty(errlist)) { 3274 char errbuf[1024]; 3275 (void) snprintf(errbuf, sizeof (errbuf), 3276 dgettext(TEXT_DOMAIN, "cannot destroy snapshots")); 3277 3278 ret = zfs_standard_error(hdl, ret, errbuf); 3279 } 3280 for (nvpair_t *pair = nvlist_next_nvpair(errlist, NULL); 3281 pair != NULL; pair = nvlist_next_nvpair(errlist, pair)) { 3282 char errbuf[1024]; 3283 (void) snprintf(errbuf, sizeof (errbuf), 3284 dgettext(TEXT_DOMAIN, "cannot destroy snapshot %s"), 3285 nvpair_name(pair)); 3286 3287 switch (fnvpair_value_int32(pair)) { 3288 case EEXIST: 3289 zfs_error_aux(hdl, 3290 dgettext(TEXT_DOMAIN, "snapshot is cloned")); 3291 ret = zfs_error(hdl, EZFS_EXISTS, errbuf); 3292 break; 3293 default: 3294 ret = zfs_standard_error(hdl, errno, errbuf); 3295 break; 3296 } 3297 } 3298 3299 return (ret); 3300 } 3301 3302 /* 3303 * Clones the given dataset. The target must be of the same type as the source. 3304 */ 3305 int 3306 zfs_clone(zfs_handle_t *zhp, const char *target, nvlist_t *props) 3307 { 3308 char parent[ZFS_MAXNAMELEN]; 3309 int ret; 3310 char errbuf[1024]; 3311 libzfs_handle_t *hdl = zhp->zfs_hdl; 3312 uint64_t zoned; 3313 3314 assert(zhp->zfs_type == ZFS_TYPE_SNAPSHOT); 3315 3316 (void) snprintf(errbuf, sizeof (errbuf), dgettext(TEXT_DOMAIN, 3317 "cannot create '%s'"), target); 3318 3319 /* validate the target/clone name */ 3320 if (!zfs_validate_name(hdl, target, ZFS_TYPE_FILESYSTEM, B_TRUE)) 3321 return (zfs_error(hdl, EZFS_INVALIDNAME, errbuf)); 3322 3323 /* validate parents exist */ 3324 if (check_parents(hdl, target, &zoned, B_FALSE, NULL) != 0) 3325 return (-1); 3326 3327 (void) parent_name(target, parent, sizeof (parent)); 3328 3329 /* do the clone */ 3330 3331 if (props) { 3332 zfs_type_t type; 3333 if (ZFS_IS_VOLUME(zhp)) { 3334 type = ZFS_TYPE_VOLUME; 3335 } else { 3336 type = ZFS_TYPE_FILESYSTEM; 3337 } 3338 if ((props = zfs_valid_proplist(hdl, type, props, zoned, 3339 zhp, errbuf)) == NULL) 3340 return (-1); 3341 } 3342 3343 ret = lzc_clone(target, zhp->zfs_name, props); 3344 nvlist_free(props); 3345 3346 if (ret != 0) { 3347 switch (errno) { 3348 3349 case ENOENT: 3350 /* 3351 * The parent doesn't exist. We should have caught this 3352 * above, but there may a race condition that has since 3353 * destroyed the parent. 3354 * 3355 * At this point, we don't know whether it's the source 3356 * that doesn't exist anymore, or whether the target 3357 * dataset doesn't exist. 3358 */ 3359 zfs_error_aux(zhp->zfs_hdl, dgettext(TEXT_DOMAIN, 3360 "no such parent '%s'"), parent); 3361 return (zfs_error(zhp->zfs_hdl, EZFS_NOENT, errbuf)); 3362 3363 case EXDEV: 3364 zfs_error_aux(zhp->zfs_hdl, dgettext(TEXT_DOMAIN, 3365 "source and target pools differ")); 3366 return (zfs_error(zhp->zfs_hdl, EZFS_CROSSTARGET, 3367 errbuf)); 3368 3369 default: 3370 return (zfs_standard_error(zhp->zfs_hdl, errno, 3371 errbuf)); 3372 } 3373 } 3374 3375 return (ret); 3376 } 3377 3378 /* 3379 * Promotes the given clone fs to be the clone parent. 3380 */ 3381 int 3382 zfs_promote(zfs_handle_t *zhp) 3383 { 3384 libzfs_handle_t *hdl = zhp->zfs_hdl; 3385 zfs_cmd_t zc = { 0 }; 3386 char parent[MAXPATHLEN]; 3387 int ret; 3388 char errbuf[1024]; 3389 3390 (void) snprintf(errbuf, sizeof (errbuf), dgettext(TEXT_DOMAIN, 3391 "cannot promote '%s'"), zhp->zfs_name); 3392 3393 if (zhp->zfs_type == ZFS_TYPE_SNAPSHOT) { 3394 zfs_error_aux(hdl, dgettext(TEXT_DOMAIN, 3395 "snapshots can not be promoted")); 3396 return (zfs_error(hdl, EZFS_BADTYPE, errbuf)); 3397 } 3398 3399 (void) strlcpy(parent, zhp->zfs_dmustats.dds_origin, sizeof (parent)); 3400 if (parent[0] == '\0') { 3401 zfs_error_aux(hdl, dgettext(TEXT_DOMAIN, 3402 "not a cloned filesystem")); 3403 return (zfs_error(hdl, EZFS_BADTYPE, errbuf)); 3404 } 3405 3406 (void) strlcpy(zc.zc_value, zhp->zfs_dmustats.dds_origin, 3407 sizeof (zc.zc_value)); 3408 (void) strlcpy(zc.zc_name, zhp->zfs_name, sizeof (zc.zc_name)); 3409 ret = zfs_ioctl(hdl, ZFS_IOC_PROMOTE, &zc); 3410 3411 if (ret != 0) { 3412 int save_errno = errno; 3413 3414 switch (save_errno) { 3415 case EEXIST: 3416 /* There is a conflicting snapshot name. */ 3417 zfs_error_aux(hdl, dgettext(TEXT_DOMAIN, 3418 "conflicting snapshot '%s' from parent '%s'"), 3419 zc.zc_string, parent); 3420 return (zfs_error(hdl, EZFS_EXISTS, errbuf)); 3421 3422 default: 3423 return (zfs_standard_error(hdl, save_errno, errbuf)); 3424 } 3425 } 3426 return (ret); 3427 } 3428 3429 typedef struct snapdata { 3430 nvlist_t *sd_nvl; 3431 const char *sd_snapname; 3432 } snapdata_t; 3433 3434 static int 3435 zfs_snapshot_cb(zfs_handle_t *zhp, void *arg) 3436 { 3437 snapdata_t *sd = arg; 3438 char name[ZFS_MAXNAMELEN]; 3439 int rv = 0; 3440 3441 if (zfs_prop_get_int(zhp, ZFS_PROP_INCONSISTENT) == 0) { 3442 (void) snprintf(name, sizeof (name), 3443 "%s@%s", zfs_get_name(zhp), sd->sd_snapname); 3444 3445 fnvlist_add_boolean(sd->sd_nvl, name); 3446 3447 rv = zfs_iter_filesystems(zhp, zfs_snapshot_cb, sd); 3448 } 3449 zfs_close(zhp); 3450 3451 return (rv); 3452 } 3453 3454 /* 3455 * Creates snapshots. The keys in the snaps nvlist are the snapshots to be 3456 * created. 3457 */ 3458 int 3459 zfs_snapshot_nvl(libzfs_handle_t *hdl, nvlist_t *snaps, nvlist_t *props) 3460 { 3461 int ret; 3462 char errbuf[1024]; 3463 nvpair_t *elem; 3464 nvlist_t *errors; 3465 3466 (void) snprintf(errbuf, sizeof (errbuf), dgettext(TEXT_DOMAIN, 3467 "cannot create snapshots ")); 3468 3469 elem = NULL; 3470 while ((elem = nvlist_next_nvpair(snaps, elem)) != NULL) { 3471 const char *snapname = nvpair_name(elem); 3472 3473 /* validate the target name */ 3474 if (!zfs_validate_name(hdl, snapname, ZFS_TYPE_SNAPSHOT, 3475 B_TRUE)) { 3476 (void) snprintf(errbuf, sizeof (errbuf), 3477 dgettext(TEXT_DOMAIN, 3478 "cannot create snapshot '%s'"), snapname); 3479 return (zfs_error(hdl, EZFS_INVALIDNAME, errbuf)); 3480 } 3481 } 3482 3483 if (props != NULL && 3484 (props = zfs_valid_proplist(hdl, ZFS_TYPE_SNAPSHOT, 3485 props, B_FALSE, NULL, errbuf)) == NULL) { 3486 return (-1); 3487 } 3488 3489 ret = lzc_snapshot(snaps, props, &errors); 3490 3491 if (ret != 0) { 3492 boolean_t printed = B_FALSE; 3493 for (elem = nvlist_next_nvpair(errors, NULL); 3494 elem != NULL; 3495 elem = nvlist_next_nvpair(errors, elem)) { 3496 (void) snprintf(errbuf, sizeof (errbuf), 3497 dgettext(TEXT_DOMAIN, 3498 "cannot create snapshot '%s'"), nvpair_name(elem)); 3499 (void) zfs_standard_error(hdl, 3500 fnvpair_value_int32(elem), errbuf); 3501 printed = B_TRUE; 3502 } 3503 if (!printed) { 3504 switch (ret) { 3505 case EXDEV: 3506 zfs_error_aux(hdl, dgettext(TEXT_DOMAIN, 3507 "multiple snapshots of same " 3508 "fs not allowed")); 3509 (void) zfs_error(hdl, EZFS_EXISTS, errbuf); 3510 3511 break; 3512 default: 3513 (void) zfs_standard_error(hdl, ret, errbuf); 3514 } 3515 } 3516 } 3517 3518 nvlist_free(props); 3519 nvlist_free(errors); 3520 return (ret); 3521 } 3522 3523 int 3524 zfs_snapshot(libzfs_handle_t *hdl, const char *path, boolean_t recursive, 3525 nvlist_t *props) 3526 { 3527 int ret; 3528 snapdata_t sd = { 0 }; 3529 char fsname[ZFS_MAXNAMELEN]; 3530 char *cp; 3531 zfs_handle_t *zhp; 3532 char errbuf[1024]; 3533 3534 (void) snprintf(errbuf, sizeof (errbuf), dgettext(TEXT_DOMAIN, 3535 "cannot snapshot %s"), path); 3536 3537 if (!zfs_validate_name(hdl, path, ZFS_TYPE_SNAPSHOT, B_TRUE)) 3538 return (zfs_error(hdl, EZFS_INVALIDNAME, errbuf)); 3539 3540 (void) strlcpy(fsname, path, sizeof (fsname)); 3541 cp = strchr(fsname, '@'); 3542 *cp = '\0'; 3543 sd.sd_snapname = cp + 1; 3544 3545 if ((zhp = zfs_open(hdl, fsname, ZFS_TYPE_FILESYSTEM | 3546 ZFS_TYPE_VOLUME)) == NULL) { 3547 return (-1); 3548 } 3549 3550 verify(nvlist_alloc(&sd.sd_nvl, NV_UNIQUE_NAME, 0) == 0); 3551 if (recursive) { 3552 (void) zfs_snapshot_cb(zfs_handle_dup(zhp), &sd); 3553 } else { 3554 fnvlist_add_boolean(sd.sd_nvl, path); 3555 } 3556 3557 ret = zfs_snapshot_nvl(hdl, sd.sd_nvl, props); 3558 nvlist_free(sd.sd_nvl); 3559 zfs_close(zhp); 3560 return (ret); 3561 } 3562 3563 /* 3564 * Destroy any more recent snapshots. We invoke this callback on any dependents 3565 * of the snapshot first. If the 'cb_dependent' member is non-zero, then this 3566 * is a dependent and we should just destroy it without checking the transaction 3567 * group. 3568 */ 3569 typedef struct rollback_data { 3570 const char *cb_target; /* the snapshot */ 3571 uint64_t cb_create; /* creation time reference */ 3572 boolean_t cb_error; 3573 boolean_t cb_force; 3574 } rollback_data_t; 3575 3576 static int 3577 rollback_destroy_dependent(zfs_handle_t *zhp, void *data) 3578 { 3579 rollback_data_t *cbp = data; 3580 prop_changelist_t *clp; 3581 3582 /* We must destroy this clone; first unmount it */ 3583 clp = changelist_gather(zhp, ZFS_PROP_NAME, 0, 3584 cbp->cb_force ? MS_FORCE: 0); 3585 if (clp == NULL || changelist_prefix(clp) != 0) { 3586 cbp->cb_error = B_TRUE; 3587 zfs_close(zhp); 3588 return (0); 3589 } 3590 if (zfs_destroy(zhp, B_FALSE) != 0) 3591 cbp->cb_error = B_TRUE; 3592 else 3593 changelist_remove(clp, zhp->zfs_name); 3594 (void) changelist_postfix(clp); 3595 changelist_free(clp); 3596 3597 zfs_close(zhp); 3598 return (0); 3599 } 3600 3601 static int 3602 rollback_destroy(zfs_handle_t *zhp, void *data) 3603 { 3604 rollback_data_t *cbp = data; 3605 3606 if (zfs_prop_get_int(zhp, ZFS_PROP_CREATETXG) > cbp->cb_create) { 3607 cbp->cb_error |= zfs_iter_dependents(zhp, B_FALSE, 3608 rollback_destroy_dependent, cbp); 3609 3610 cbp->cb_error |= zfs_destroy(zhp, B_FALSE); 3611 } 3612 3613 zfs_close(zhp); 3614 return (0); 3615 } 3616 3617 /* 3618 * Given a dataset, rollback to a specific snapshot, discarding any 3619 * data changes since then and making it the active dataset. 3620 * 3621 * Any snapshots and bookmarks more recent than the target are 3622 * destroyed, along with their dependents (i.e. clones). 3623 */ 3624 int 3625 zfs_rollback(zfs_handle_t *zhp, zfs_handle_t *snap, boolean_t force) 3626 { 3627 rollback_data_t cb = { 0 }; 3628 int err; 3629 boolean_t restore_resv = 0; 3630 uint64_t old_volsize, new_volsize; 3631 zfs_prop_t resv_prop; 3632 3633 assert(zhp->zfs_type == ZFS_TYPE_FILESYSTEM || 3634 zhp->zfs_type == ZFS_TYPE_VOLUME); 3635 3636 /* 3637 * Destroy all recent snapshots and their dependents. 3638 */ 3639 cb.cb_force = force; 3640 cb.cb_target = snap->zfs_name; 3641 cb.cb_create = zfs_prop_get_int(snap, ZFS_PROP_CREATETXG); 3642 (void) zfs_iter_snapshots(zhp, rollback_destroy, &cb); 3643 (void) zfs_iter_bookmarks(zhp, rollback_destroy, &cb); 3644 3645 if (cb.cb_error) 3646 return (-1); 3647 3648 /* 3649 * Now that we have verified that the snapshot is the latest, 3650 * rollback to the given snapshot. 3651 */ 3652 3653 if (zhp->zfs_type == ZFS_TYPE_VOLUME) { 3654 if (zfs_which_resv_prop(zhp, &resv_prop) < 0) 3655 return (-1); 3656 old_volsize = zfs_prop_get_int(zhp, ZFS_PROP_VOLSIZE); 3657 restore_resv = 3658 (old_volsize == zfs_prop_get_int(zhp, resv_prop)); 3659 } 3660 3661 /* 3662 * We rely on zfs_iter_children() to verify that there are no 3663 * newer snapshots for the given dataset. Therefore, we can 3664 * simply pass the name on to the ioctl() call. There is still 3665 * an unlikely race condition where the user has taken a 3666 * snapshot since we verified that this was the most recent. 3667 */ 3668 err = lzc_rollback(zhp->zfs_name, NULL, 0); 3669 if (err != 0) { 3670 (void) zfs_standard_error_fmt(zhp->zfs_hdl, errno, 3671 dgettext(TEXT_DOMAIN, "cannot rollback '%s'"), 3672 zhp->zfs_name); 3673 return (err); 3674 } 3675 3676 /* 3677 * For volumes, if the pre-rollback volsize matched the pre- 3678 * rollback reservation and the volsize has changed then set 3679 * the reservation property to the post-rollback volsize. 3680 * Make a new handle since the rollback closed the dataset. 3681 */ 3682 if ((zhp->zfs_type == ZFS_TYPE_VOLUME) && 3683 (zhp = make_dataset_handle(zhp->zfs_hdl, zhp->zfs_name))) { 3684 if (restore_resv) { 3685 new_volsize = zfs_prop_get_int(zhp, ZFS_PROP_VOLSIZE); 3686 if (old_volsize != new_volsize) 3687 err = zfs_prop_set_int(zhp, resv_prop, 3688 new_volsize); 3689 } 3690 zfs_close(zhp); 3691 } 3692 return (err); 3693 } 3694 3695 /* 3696 * Renames the given dataset. 3697 */ 3698 int 3699 zfs_rename(zfs_handle_t *zhp, const char *target, boolean_t recursive, 3700 boolean_t force_unmount) 3701 { 3702 int ret; 3703 zfs_cmd_t zc = { 0 }; 3704 char *delim; 3705 prop_changelist_t *cl = NULL; 3706 zfs_handle_t *zhrp = NULL; 3707 char *parentname = NULL; 3708 char parent[ZFS_MAXNAMELEN]; 3709 libzfs_handle_t *hdl = zhp->zfs_hdl; 3710 char errbuf[1024]; 3711 3712 /* if we have the same exact name, just return success */ 3713 if (strcmp(zhp->zfs_name, target) == 0) 3714 return (0); 3715 3716 (void) snprintf(errbuf, sizeof (errbuf), dgettext(TEXT_DOMAIN, 3717 "cannot rename to '%s'"), target); 3718 3719 /* 3720 * Make sure the target name is valid 3721 */ 3722 if (zhp->zfs_type == ZFS_TYPE_SNAPSHOT) { 3723 if ((strchr(target, '@') == NULL) || 3724 *target == '@') { 3725 /* 3726 * Snapshot target name is abbreviated, 3727 * reconstruct full dataset name 3728 */ 3729 (void) strlcpy(parent, zhp->zfs_name, 3730 sizeof (parent)); 3731 delim = strchr(parent, '@'); 3732 if (strchr(target, '@') == NULL) 3733 *(++delim) = '\0'; 3734 else 3735 *delim = '\0'; 3736 (void) strlcat(parent, target, sizeof (parent)); 3737 target = parent; 3738 } else { 3739 /* 3740 * Make sure we're renaming within the same dataset. 3741 */ 3742 delim = strchr(target, '@'); 3743 if (strncmp(zhp->zfs_name, target, delim - target) 3744 != 0 || zhp->zfs_name[delim - target] != '@') { 3745 zfs_error_aux(hdl, dgettext(TEXT_DOMAIN, 3746 "snapshots must be part of same " 3747 "dataset")); 3748 return (zfs_error(hdl, EZFS_CROSSTARGET, 3749 errbuf)); 3750 } 3751 } 3752 if (!zfs_validate_name(hdl, target, zhp->zfs_type, B_TRUE)) 3753 return (zfs_error(hdl, EZFS_INVALIDNAME, errbuf)); 3754 } else { 3755 if (recursive) { 3756 zfs_error_aux(hdl, dgettext(TEXT_DOMAIN, 3757 "recursive rename must be a snapshot")); 3758 return (zfs_error(hdl, EZFS_BADTYPE, errbuf)); 3759 } 3760 3761 if (!zfs_validate_name(hdl, target, zhp->zfs_type, B_TRUE)) 3762 return (zfs_error(hdl, EZFS_INVALIDNAME, errbuf)); 3763 3764 /* validate parents */ 3765 if (check_parents(hdl, target, NULL, B_FALSE, NULL) != 0) 3766 return (-1); 3767 3768 /* make sure we're in the same pool */ 3769 verify((delim = strchr(target, '/')) != NULL); 3770 if (strncmp(zhp->zfs_name, target, delim - target) != 0 || 3771 zhp->zfs_name[delim - target] != '/') { 3772 zfs_error_aux(hdl, dgettext(TEXT_DOMAIN, 3773 "datasets must be within same pool")); 3774 return (zfs_error(hdl, EZFS_CROSSTARGET, errbuf)); 3775 } 3776 3777 /* new name cannot be a child of the current dataset name */ 3778 if (is_descendant(zhp->zfs_name, target)) { 3779 zfs_error_aux(hdl, dgettext(TEXT_DOMAIN, 3780 "New dataset name cannot be a descendant of " 3781 "current dataset name")); 3782 return (zfs_error(hdl, EZFS_INVALIDNAME, errbuf)); 3783 } 3784 } 3785 3786 (void) snprintf(errbuf, sizeof (errbuf), 3787 dgettext(TEXT_DOMAIN, "cannot rename '%s'"), zhp->zfs_name); 3788 3789 if (getzoneid() == GLOBAL_ZONEID && 3790 zfs_prop_get_int(zhp, ZFS_PROP_ZONED)) { 3791 zfs_error_aux(hdl, dgettext(TEXT_DOMAIN, 3792 "dataset is used in a non-global zone")); 3793 return (zfs_error(hdl, EZFS_ZONED, errbuf)); 3794 } 3795 3796 if (recursive) { 3797 parentname = zfs_strdup(zhp->zfs_hdl, zhp->zfs_name); 3798 if (parentname == NULL) { 3799 ret = -1; 3800 goto error; 3801 } 3802 delim = strchr(parentname, '@'); 3803 *delim = '\0'; 3804 zhrp = zfs_open(zhp->zfs_hdl, parentname, ZFS_TYPE_DATASET); 3805 if (zhrp == NULL) { 3806 ret = -1; 3807 goto error; 3808 } 3809 } else if (zhp->zfs_type != ZFS_TYPE_SNAPSHOT) { 3810 if ((cl = changelist_gather(zhp, ZFS_PROP_NAME, 0, 3811 force_unmount ? MS_FORCE : 0)) == NULL) 3812 return (-1); 3813 3814 if (changelist_haszonedchild(cl)) { 3815 zfs_error_aux(hdl, dgettext(TEXT_DOMAIN, 3816 "child dataset with inherited mountpoint is used " 3817 "in a non-global zone")); 3818 (void) zfs_error(hdl, EZFS_ZONED, errbuf); 3819 goto error; 3820 } 3821 3822 if ((ret = changelist_prefix(cl)) != 0) 3823 goto error; 3824 } 3825 3826 if (ZFS_IS_VOLUME(zhp)) 3827 zc.zc_objset_type = DMU_OST_ZVOL; 3828 else 3829 zc.zc_objset_type = DMU_OST_ZFS; 3830 3831 (void) strlcpy(zc.zc_name, zhp->zfs_name, sizeof (zc.zc_name)); 3832 (void) strlcpy(zc.zc_value, target, sizeof (zc.zc_value)); 3833 3834 zc.zc_cookie = recursive; 3835 3836 if ((ret = zfs_ioctl(zhp->zfs_hdl, ZFS_IOC_RENAME, &zc)) != 0) { 3837 /* 3838 * if it was recursive, the one that actually failed will 3839 * be in zc.zc_name 3840 */ 3841 (void) snprintf(errbuf, sizeof (errbuf), dgettext(TEXT_DOMAIN, 3842 "cannot rename '%s'"), zc.zc_name); 3843 3844 if (recursive && errno == EEXIST) { 3845 zfs_error_aux(hdl, dgettext(TEXT_DOMAIN, 3846 "a child dataset already has a snapshot " 3847 "with the new name")); 3848 (void) zfs_error(hdl, EZFS_EXISTS, errbuf); 3849 } else { 3850 (void) zfs_standard_error(zhp->zfs_hdl, errno, errbuf); 3851 } 3852 3853 /* 3854 * On failure, we still want to remount any filesystems that 3855 * were previously mounted, so we don't alter the system state. 3856 */ 3857 if (cl != NULL) 3858 (void) changelist_postfix(cl); 3859 } else { 3860 if (cl != NULL) { 3861 changelist_rename(cl, zfs_get_name(zhp), target); 3862 ret = changelist_postfix(cl); 3863 } 3864 } 3865 3866 error: 3867 if (parentname != NULL) { 3868 free(parentname); 3869 } 3870 if (zhrp != NULL) { 3871 zfs_close(zhrp); 3872 } 3873 if (cl != NULL) { 3874 changelist_free(cl); 3875 } 3876 return (ret); 3877 } 3878 3879 nvlist_t * 3880 zfs_get_user_props(zfs_handle_t *zhp) 3881 { 3882 return (zhp->zfs_user_props); 3883 } 3884 3885 nvlist_t * 3886 zfs_get_recvd_props(zfs_handle_t *zhp) 3887 { 3888 if (zhp->zfs_recvd_props == NULL) 3889 if (get_recvd_props_ioctl(zhp) != 0) 3890 return (NULL); 3891 return (zhp->zfs_recvd_props); 3892 } 3893 3894 /* 3895 * This function is used by 'zfs list' to determine the exact set of columns to 3896 * display, and their maximum widths. This does two main things: 3897 * 3898 * - If this is a list of all properties, then expand the list to include 3899 * all native properties, and set a flag so that for each dataset we look 3900 * for new unique user properties and add them to the list. 3901 * 3902 * - For non fixed-width properties, keep track of the maximum width seen 3903 * so that we can size the column appropriately. If the user has 3904 * requested received property values, we also need to compute the width 3905 * of the RECEIVED column. 3906 */ 3907 int 3908 zfs_expand_proplist(zfs_handle_t *zhp, zprop_list_t **plp, boolean_t received, 3909 boolean_t literal) 3910 { 3911 libzfs_handle_t *hdl = zhp->zfs_hdl; 3912 zprop_list_t *entry; 3913 zprop_list_t **last, **start; 3914 nvlist_t *userprops, *propval; 3915 nvpair_t *elem; 3916 char *strval; 3917 char buf[ZFS_MAXPROPLEN]; 3918 3919 if (zprop_expand_list(hdl, plp, ZFS_TYPE_DATASET) != 0) 3920 return (-1); 3921 3922 userprops = zfs_get_user_props(zhp); 3923 3924 entry = *plp; 3925 if (entry->pl_all && nvlist_next_nvpair(userprops, NULL) != NULL) { 3926 /* 3927 * Go through and add any user properties as necessary. We 3928 * start by incrementing our list pointer to the first 3929 * non-native property. 3930 */ 3931 start = plp; 3932 while (*start != NULL) { 3933 if ((*start)->pl_prop == ZPROP_INVAL) 3934 break; 3935 start = &(*start)->pl_next; 3936 } 3937 3938 elem = NULL; 3939 while ((elem = nvlist_next_nvpair(userprops, elem)) != NULL) { 3940 /* 3941 * See if we've already found this property in our list. 3942 */ 3943 for (last = start; *last != NULL; 3944 last = &(*last)->pl_next) { 3945 if (strcmp((*last)->pl_user_prop, 3946 nvpair_name(elem)) == 0) 3947 break; 3948 } 3949 3950 if (*last == NULL) { 3951 if ((entry = zfs_alloc(hdl, 3952 sizeof (zprop_list_t))) == NULL || 3953 ((entry->pl_user_prop = zfs_strdup(hdl, 3954 nvpair_name(elem)))) == NULL) { 3955 free(entry); 3956 return (-1); 3957 } 3958 3959 entry->pl_prop = ZPROP_INVAL; 3960 entry->pl_width = strlen(nvpair_name(elem)); 3961 entry->pl_all = B_TRUE; 3962 *last = entry; 3963 } 3964 } 3965 } 3966 3967 /* 3968 * Now go through and check the width of any non-fixed columns 3969 */ 3970 for (entry = *plp; entry != NULL; entry = entry->pl_next) { 3971 if (entry->pl_fixed && !literal) 3972 continue; 3973 3974 if (entry->pl_prop != ZPROP_INVAL) { 3975 if (zfs_prop_get(zhp, entry->pl_prop, 3976 buf, sizeof (buf), NULL, NULL, 0, literal) == 0) { 3977 if (strlen(buf) > entry->pl_width) 3978 entry->pl_width = strlen(buf); 3979 } 3980 if (received && zfs_prop_get_recvd(zhp, 3981 zfs_prop_to_name(entry->pl_prop), 3982 buf, sizeof (buf), literal) == 0) 3983 if (strlen(buf) > entry->pl_recvd_width) 3984 entry->pl_recvd_width = strlen(buf); 3985 } else { 3986 if (nvlist_lookup_nvlist(userprops, entry->pl_user_prop, 3987 &propval) == 0) { 3988 verify(nvlist_lookup_string(propval, 3989 ZPROP_VALUE, &strval) == 0); 3990 if (strlen(strval) > entry->pl_width) 3991 entry->pl_width = strlen(strval); 3992 } 3993 if (received && zfs_prop_get_recvd(zhp, 3994 entry->pl_user_prop, 3995 buf, sizeof (buf), literal) == 0) 3996 if (strlen(buf) > entry->pl_recvd_width) 3997 entry->pl_recvd_width = strlen(buf); 3998 } 3999 } 4000 4001 return (0); 4002 } 4003 4004 int 4005 zfs_deleg_share_nfs(libzfs_handle_t *hdl, char *dataset, char *path, 4006 char *resource, void *export, void *sharetab, 4007 int sharemax, zfs_share_op_t operation) 4008 { 4009 zfs_cmd_t zc = { 0 }; 4010 int error; 4011 4012 (void) strlcpy(zc.zc_name, dataset, sizeof (zc.zc_name)); 4013 (void) strlcpy(zc.zc_value, path, sizeof (zc.zc_value)); 4014 if (resource) 4015 (void) strlcpy(zc.zc_string, resource, sizeof (zc.zc_string)); 4016 zc.zc_share.z_sharedata = (uint64_t)(uintptr_t)sharetab; 4017 zc.zc_share.z_exportdata = (uint64_t)(uintptr_t)export; 4018 zc.zc_share.z_sharetype = operation; 4019 zc.zc_share.z_sharemax = sharemax; 4020 error = ioctl(hdl->libzfs_fd, ZFS_IOC_SHARE, &zc); 4021 return (error); 4022 } 4023 4024 void 4025 zfs_prune_proplist(zfs_handle_t *zhp, uint8_t *props) 4026 { 4027 nvpair_t *curr; 4028 4029 /* 4030 * Keep a reference to the props-table against which we prune the 4031 * properties. 4032 */ 4033 zhp->zfs_props_table = props; 4034 4035 curr = nvlist_next_nvpair(zhp->zfs_props, NULL); 4036 4037 while (curr) { 4038 zfs_prop_t zfs_prop = zfs_name_to_prop(nvpair_name(curr)); 4039 nvpair_t *next = nvlist_next_nvpair(zhp->zfs_props, curr); 4040 4041 /* 4042 * User properties will result in ZPROP_INVAL, and since we 4043 * only know how to prune standard ZFS properties, we always 4044 * leave these in the list. This can also happen if we 4045 * encounter an unknown DSL property (when running older 4046 * software, for example). 4047 */ 4048 if (zfs_prop != ZPROP_INVAL && props[zfs_prop] == B_FALSE) 4049 (void) nvlist_remove(zhp->zfs_props, 4050 nvpair_name(curr), nvpair_type(curr)); 4051 curr = next; 4052 } 4053 } 4054 4055 static int 4056 zfs_smb_acl_mgmt(libzfs_handle_t *hdl, char *dataset, char *path, 4057 zfs_smb_acl_op_t cmd, char *resource1, char *resource2) 4058 { 4059 zfs_cmd_t zc = { 0 }; 4060 nvlist_t *nvlist = NULL; 4061 int error; 4062 4063 (void) strlcpy(zc.zc_name, dataset, sizeof (zc.zc_name)); 4064 (void) strlcpy(zc.zc_value, path, sizeof (zc.zc_value)); 4065 zc.zc_cookie = (uint64_t)cmd; 4066 4067 if (cmd == ZFS_SMB_ACL_RENAME) { 4068 if (nvlist_alloc(&nvlist, NV_UNIQUE_NAME, 0) != 0) { 4069 (void) no_memory(hdl); 4070 return (NULL); 4071 } 4072 } 4073 4074 switch (cmd) { 4075 case ZFS_SMB_ACL_ADD: 4076 case ZFS_SMB_ACL_REMOVE: 4077 (void) strlcpy(zc.zc_string, resource1, sizeof (zc.zc_string)); 4078 break; 4079 case ZFS_SMB_ACL_RENAME: 4080 if (nvlist_add_string(nvlist, ZFS_SMB_ACL_SRC, 4081 resource1) != 0) { 4082 (void) no_memory(hdl); 4083 return (-1); 4084 } 4085 if (nvlist_add_string(nvlist, ZFS_SMB_ACL_TARGET, 4086 resource2) != 0) { 4087 (void) no_memory(hdl); 4088 return (-1); 4089 } 4090 if (zcmd_write_src_nvlist(hdl, &zc, nvlist) != 0) { 4091 nvlist_free(nvlist); 4092 return (-1); 4093 } 4094 break; 4095 case ZFS_SMB_ACL_PURGE: 4096 break; 4097 default: 4098 return (-1); 4099 } 4100 error = ioctl(hdl->libzfs_fd, ZFS_IOC_SMB_ACL, &zc); 4101 if (nvlist) 4102 nvlist_free(nvlist); 4103 return (error); 4104 } 4105 4106 int 4107 zfs_smb_acl_add(libzfs_handle_t *hdl, char *dataset, 4108 char *path, char *resource) 4109 { 4110 return (zfs_smb_acl_mgmt(hdl, dataset, path, ZFS_SMB_ACL_ADD, 4111 resource, NULL)); 4112 } 4113 4114 int 4115 zfs_smb_acl_remove(libzfs_handle_t *hdl, char *dataset, 4116 char *path, char *resource) 4117 { 4118 return (zfs_smb_acl_mgmt(hdl, dataset, path, ZFS_SMB_ACL_REMOVE, 4119 resource, NULL)); 4120 } 4121 4122 int 4123 zfs_smb_acl_purge(libzfs_handle_t *hdl, char *dataset, char *path) 4124 { 4125 return (zfs_smb_acl_mgmt(hdl, dataset, path, ZFS_SMB_ACL_PURGE, 4126 NULL, NULL)); 4127 } 4128 4129 int 4130 zfs_smb_acl_rename(libzfs_handle_t *hdl, char *dataset, char *path, 4131 char *oldname, char *newname) 4132 { 4133 return (zfs_smb_acl_mgmt(hdl, dataset, path, ZFS_SMB_ACL_RENAME, 4134 oldname, newname)); 4135 } 4136 4137 int 4138 zfs_userspace(zfs_handle_t *zhp, zfs_userquota_prop_t type, 4139 zfs_userspace_cb_t func, void *arg) 4140 { 4141 zfs_cmd_t zc = { 0 }; 4142 zfs_useracct_t buf[100]; 4143 libzfs_handle_t *hdl = zhp->zfs_hdl; 4144 int ret; 4145 4146 (void) strlcpy(zc.zc_name, zhp->zfs_name, sizeof (zc.zc_name)); 4147 4148 zc.zc_objset_type = type; 4149 zc.zc_nvlist_dst = (uintptr_t)buf; 4150 4151 for (;;) { 4152 zfs_useracct_t *zua = buf; 4153 4154 zc.zc_nvlist_dst_size = sizeof (buf); 4155 if (zfs_ioctl(hdl, ZFS_IOC_USERSPACE_MANY, &zc) != 0) { 4156 char errbuf[1024]; 4157 4158 (void) snprintf(errbuf, sizeof (errbuf), 4159 dgettext(TEXT_DOMAIN, 4160 "cannot get used/quota for %s"), zc.zc_name); 4161 return (zfs_standard_error_fmt(hdl, errno, errbuf)); 4162 } 4163 if (zc.zc_nvlist_dst_size == 0) 4164 break; 4165 4166 while (zc.zc_nvlist_dst_size > 0) { 4167 if ((ret = func(arg, zua->zu_domain, zua->zu_rid, 4168 zua->zu_space)) != 0) 4169 return (ret); 4170 zua++; 4171 zc.zc_nvlist_dst_size -= sizeof (zfs_useracct_t); 4172 } 4173 } 4174 4175 return (0); 4176 } 4177 4178 struct holdarg { 4179 nvlist_t *nvl; 4180 const char *snapname; 4181 const char *tag; 4182 boolean_t recursive; 4183 int error; 4184 }; 4185 4186 static int 4187 zfs_hold_one(zfs_handle_t *zhp, void *arg) 4188 { 4189 struct holdarg *ha = arg; 4190 char name[ZFS_MAXNAMELEN]; 4191 int rv = 0; 4192 4193 (void) snprintf(name, sizeof (name), 4194 "%s@%s", zhp->zfs_name, ha->snapname); 4195 4196 if (lzc_exists(name)) 4197 fnvlist_add_string(ha->nvl, name, ha->tag); 4198 4199 if (ha->recursive) 4200 rv = zfs_iter_filesystems(zhp, zfs_hold_one, ha); 4201 zfs_close(zhp); 4202 return (rv); 4203 } 4204 4205 int 4206 zfs_hold(zfs_handle_t *zhp, const char *snapname, const char *tag, 4207 boolean_t recursive, int cleanup_fd) 4208 { 4209 int ret; 4210 struct holdarg ha; 4211 4212 ha.nvl = fnvlist_alloc(); 4213 ha.snapname = snapname; 4214 ha.tag = tag; 4215 ha.recursive = recursive; 4216 (void) zfs_hold_one(zfs_handle_dup(zhp), &ha); 4217 4218 if (nvlist_empty(ha.nvl)) { 4219 char errbuf[1024]; 4220 4221 fnvlist_free(ha.nvl); 4222 ret = ENOENT; 4223 (void) snprintf(errbuf, sizeof (errbuf), 4224 dgettext(TEXT_DOMAIN, 4225 "cannot hold snapshot '%s@%s'"), 4226 zhp->zfs_name, snapname); 4227 (void) zfs_standard_error(zhp->zfs_hdl, ret, errbuf); 4228 return (ret); 4229 } 4230 4231 ret = zfs_hold_nvl(zhp, cleanup_fd, ha.nvl); 4232 fnvlist_free(ha.nvl); 4233 4234 return (ret); 4235 } 4236 4237 int 4238 zfs_hold_nvl(zfs_handle_t *zhp, int cleanup_fd, nvlist_t *holds) 4239 { 4240 int ret; 4241 nvlist_t *errors; 4242 libzfs_handle_t *hdl = zhp->zfs_hdl; 4243 char errbuf[1024]; 4244 nvpair_t *elem; 4245 4246 errors = NULL; 4247 ret = lzc_hold(holds, cleanup_fd, &errors); 4248 4249 if (ret == 0) { 4250 /* There may be errors even in the success case. */ 4251 fnvlist_free(errors); 4252 return (0); 4253 } 4254 4255 if (nvlist_empty(errors)) { 4256 /* no hold-specific errors */ 4257 (void) snprintf(errbuf, sizeof (errbuf), 4258 dgettext(TEXT_DOMAIN, "cannot hold")); 4259 switch (ret) { 4260 case ENOTSUP: 4261 zfs_error_aux(hdl, dgettext(TEXT_DOMAIN, 4262 "pool must be upgraded")); 4263 (void) zfs_error(hdl, EZFS_BADVERSION, errbuf); 4264 break; 4265 case EINVAL: 4266 (void) zfs_error(hdl, EZFS_BADTYPE, errbuf); 4267 break; 4268 default: 4269 (void) zfs_standard_error(hdl, ret, errbuf); 4270 } 4271 } 4272 4273 for (elem = nvlist_next_nvpair(errors, NULL); 4274 elem != NULL; 4275 elem = nvlist_next_nvpair(errors, elem)) { 4276 (void) snprintf(errbuf, sizeof (errbuf), 4277 dgettext(TEXT_DOMAIN, 4278 "cannot hold snapshot '%s'"), nvpair_name(elem)); 4279 switch (fnvpair_value_int32(elem)) { 4280 case E2BIG: 4281 /* 4282 * Temporary tags wind up having the ds object id 4283 * prepended. So even if we passed the length check 4284 * above, it's still possible for the tag to wind 4285 * up being slightly too long. 4286 */ 4287 (void) zfs_error(hdl, EZFS_TAGTOOLONG, errbuf); 4288 break; 4289 case EINVAL: 4290 (void) zfs_error(hdl, EZFS_BADTYPE, errbuf); 4291 break; 4292 case EEXIST: 4293 (void) zfs_error(hdl, EZFS_REFTAG_HOLD, errbuf); 4294 break; 4295 default: 4296 (void) zfs_standard_error(hdl, 4297 fnvpair_value_int32(elem), errbuf); 4298 } 4299 } 4300 4301 fnvlist_free(errors); 4302 return (ret); 4303 } 4304 4305 static int 4306 zfs_release_one(zfs_handle_t *zhp, void *arg) 4307 { 4308 struct holdarg *ha = arg; 4309 char name[ZFS_MAXNAMELEN]; 4310 int rv = 0; 4311 nvlist_t *existing_holds; 4312 4313 (void) snprintf(name, sizeof (name), 4314 "%s@%s", zhp->zfs_name, ha->snapname); 4315 4316 if (lzc_get_holds(name, &existing_holds) != 0) { 4317 ha->error = ENOENT; 4318 } else if (!nvlist_exists(existing_holds, ha->tag)) { 4319 ha->error = ESRCH; 4320 } else { 4321 nvlist_t *torelease = fnvlist_alloc(); 4322 fnvlist_add_boolean(torelease, ha->tag); 4323 fnvlist_add_nvlist(ha->nvl, name, torelease); 4324 fnvlist_free(torelease); 4325 } 4326 4327 if (ha->recursive) 4328 rv = zfs_iter_filesystems(zhp, zfs_release_one, ha); 4329 zfs_close(zhp); 4330 return (rv); 4331 } 4332 4333 int 4334 zfs_release(zfs_handle_t *zhp, const char *snapname, const char *tag, 4335 boolean_t recursive) 4336 { 4337 int ret; 4338 struct holdarg ha; 4339 nvlist_t *errors = NULL; 4340 nvpair_t *elem; 4341 libzfs_handle_t *hdl = zhp->zfs_hdl; 4342 char errbuf[1024]; 4343 4344 ha.nvl = fnvlist_alloc(); 4345 ha.snapname = snapname; 4346 ha.tag = tag; 4347 ha.recursive = recursive; 4348 ha.error = 0; 4349 (void) zfs_release_one(zfs_handle_dup(zhp), &ha); 4350 4351 if (nvlist_empty(ha.nvl)) { 4352 fnvlist_free(ha.nvl); 4353 ret = ha.error; 4354 (void) snprintf(errbuf, sizeof (errbuf), 4355 dgettext(TEXT_DOMAIN, 4356 "cannot release hold from snapshot '%s@%s'"), 4357 zhp->zfs_name, snapname); 4358 if (ret == ESRCH) { 4359 (void) zfs_error(hdl, EZFS_REFTAG_RELE, errbuf); 4360 } else { 4361 (void) zfs_standard_error(hdl, ret, errbuf); 4362 } 4363 return (ret); 4364 } 4365 4366 ret = lzc_release(ha.nvl, &errors); 4367 fnvlist_free(ha.nvl); 4368 4369 if (ret == 0) { 4370 /* There may be errors even in the success case. */ 4371 fnvlist_free(errors); 4372 return (0); 4373 } 4374 4375 if (nvlist_empty(errors)) { 4376 /* no hold-specific errors */ 4377 (void) snprintf(errbuf, sizeof (errbuf), dgettext(TEXT_DOMAIN, 4378 "cannot release")); 4379 switch (errno) { 4380 case ENOTSUP: 4381 zfs_error_aux(hdl, dgettext(TEXT_DOMAIN, 4382 "pool must be upgraded")); 4383 (void) zfs_error(hdl, EZFS_BADVERSION, errbuf); 4384 break; 4385 default: 4386 (void) zfs_standard_error_fmt(hdl, errno, errbuf); 4387 } 4388 } 4389 4390 for (elem = nvlist_next_nvpair(errors, NULL); 4391 elem != NULL; 4392 elem = nvlist_next_nvpair(errors, elem)) { 4393 (void) snprintf(errbuf, sizeof (errbuf), 4394 dgettext(TEXT_DOMAIN, 4395 "cannot release hold from snapshot '%s'"), 4396 nvpair_name(elem)); 4397 switch (fnvpair_value_int32(elem)) { 4398 case ESRCH: 4399 (void) zfs_error(hdl, EZFS_REFTAG_RELE, errbuf); 4400 break; 4401 case EINVAL: 4402 (void) zfs_error(hdl, EZFS_BADTYPE, errbuf); 4403 break; 4404 default: 4405 (void) zfs_standard_error_fmt(hdl, 4406 fnvpair_value_int32(elem), errbuf); 4407 } 4408 } 4409 4410 fnvlist_free(errors); 4411 return (ret); 4412 } 4413 4414 int 4415 zfs_get_fsacl(zfs_handle_t *zhp, nvlist_t **nvl) 4416 { 4417 zfs_cmd_t zc = { 0 }; 4418 libzfs_handle_t *hdl = zhp->zfs_hdl; 4419 int nvsz = 2048; 4420 void *nvbuf; 4421 int err = 0; 4422 char errbuf[1024]; 4423 4424 assert(zhp->zfs_type == ZFS_TYPE_VOLUME || 4425 zhp->zfs_type == ZFS_TYPE_FILESYSTEM); 4426 4427 tryagain: 4428 4429 nvbuf = malloc(nvsz); 4430 if (nvbuf == NULL) { 4431 err = (zfs_error(hdl, EZFS_NOMEM, strerror(errno))); 4432 goto out; 4433 } 4434 4435 zc.zc_nvlist_dst_size = nvsz; 4436 zc.zc_nvlist_dst = (uintptr_t)nvbuf; 4437 4438 (void) strlcpy(zc.zc_name, zhp->zfs_name, ZFS_MAXNAMELEN); 4439 4440 if (ioctl(hdl->libzfs_fd, ZFS_IOC_GET_FSACL, &zc) != 0) { 4441 (void) snprintf(errbuf, sizeof (errbuf), 4442 dgettext(TEXT_DOMAIN, "cannot get permissions on '%s'"), 4443 zc.zc_name); 4444 switch (errno) { 4445 case ENOMEM: 4446 free(nvbuf); 4447 nvsz = zc.zc_nvlist_dst_size; 4448 goto tryagain; 4449 4450 case ENOTSUP: 4451 zfs_error_aux(hdl, dgettext(TEXT_DOMAIN, 4452 "pool must be upgraded")); 4453 err = zfs_error(hdl, EZFS_BADVERSION, errbuf); 4454 break; 4455 case EINVAL: 4456 err = zfs_error(hdl, EZFS_BADTYPE, errbuf); 4457 break; 4458 case ENOENT: 4459 err = zfs_error(hdl, EZFS_NOENT, errbuf); 4460 break; 4461 default: 4462 err = zfs_standard_error_fmt(hdl, errno, errbuf); 4463 break; 4464 } 4465 } else { 4466 /* success */ 4467 int rc = nvlist_unpack(nvbuf, zc.zc_nvlist_dst_size, nvl, 0); 4468 if (rc) { 4469 (void) snprintf(errbuf, sizeof (errbuf), dgettext( 4470 TEXT_DOMAIN, "cannot get permissions on '%s'"), 4471 zc.zc_name); 4472 err = zfs_standard_error_fmt(hdl, rc, errbuf); 4473 } 4474 } 4475 4476 free(nvbuf); 4477 out: 4478 return (err); 4479 } 4480 4481 int 4482 zfs_set_fsacl(zfs_handle_t *zhp, boolean_t un, nvlist_t *nvl) 4483 { 4484 zfs_cmd_t zc = { 0 }; 4485 libzfs_handle_t *hdl = zhp->zfs_hdl; 4486 char *nvbuf; 4487 char errbuf[1024]; 4488 size_t nvsz; 4489 int err; 4490 4491 assert(zhp->zfs_type == ZFS_TYPE_VOLUME || 4492 zhp->zfs_type == ZFS_TYPE_FILESYSTEM); 4493 4494 err = nvlist_size(nvl, &nvsz, NV_ENCODE_NATIVE); 4495 assert(err == 0); 4496 4497 nvbuf = malloc(nvsz); 4498 4499 err = nvlist_pack(nvl, &nvbuf, &nvsz, NV_ENCODE_NATIVE, 0); 4500 assert(err == 0); 4501 4502 zc.zc_nvlist_src_size = nvsz; 4503 zc.zc_nvlist_src = (uintptr_t)nvbuf; 4504 zc.zc_perm_action = un; 4505 4506 (void) strlcpy(zc.zc_name, zhp->zfs_name, sizeof (zc.zc_name)); 4507 4508 if (zfs_ioctl(hdl, ZFS_IOC_SET_FSACL, &zc) != 0) { 4509 (void) snprintf(errbuf, sizeof (errbuf), 4510 dgettext(TEXT_DOMAIN, "cannot set permissions on '%s'"), 4511 zc.zc_name); 4512 switch (errno) { 4513 case ENOTSUP: 4514 zfs_error_aux(hdl, dgettext(TEXT_DOMAIN, 4515 "pool must be upgraded")); 4516 err = zfs_error(hdl, EZFS_BADVERSION, errbuf); 4517 break; 4518 case EINVAL: 4519 err = zfs_error(hdl, EZFS_BADTYPE, errbuf); 4520 break; 4521 case ENOENT: 4522 err = zfs_error(hdl, EZFS_NOENT, errbuf); 4523 break; 4524 default: 4525 err = zfs_standard_error_fmt(hdl, errno, errbuf); 4526 break; 4527 } 4528 } 4529 4530 free(nvbuf); 4531 4532 return (err); 4533 } 4534 4535 int 4536 zfs_get_holds(zfs_handle_t *zhp, nvlist_t **nvl) 4537 { 4538 int err; 4539 char errbuf[1024]; 4540 4541 err = lzc_get_holds(zhp->zfs_name, nvl); 4542 4543 if (err != 0) { 4544 libzfs_handle_t *hdl = zhp->zfs_hdl; 4545 4546 (void) snprintf(errbuf, sizeof (errbuf), 4547 dgettext(TEXT_DOMAIN, "cannot get holds for '%s'"), 4548 zhp->zfs_name); 4549 switch (err) { 4550 case ENOTSUP: 4551 zfs_error_aux(hdl, dgettext(TEXT_DOMAIN, 4552 "pool must be upgraded")); 4553 err = zfs_error(hdl, EZFS_BADVERSION, errbuf); 4554 break; 4555 case EINVAL: 4556 err = zfs_error(hdl, EZFS_BADTYPE, errbuf); 4557 break; 4558 case ENOENT: 4559 err = zfs_error(hdl, EZFS_NOENT, errbuf); 4560 break; 4561 default: 4562 err = zfs_standard_error_fmt(hdl, errno, errbuf); 4563 break; 4564 } 4565 } 4566 4567 return (err); 4568 } 4569 4570 /* 4571 * Convert the zvol's volume size to an appropriate reservation. 4572 * Note: If this routine is updated, it is necessary to update the ZFS test 4573 * suite's shell version in reservation.kshlib. 4574 */ 4575 uint64_t 4576 zvol_volsize_to_reservation(uint64_t volsize, nvlist_t *props) 4577 { 4578 uint64_t numdb; 4579 uint64_t nblocks, volblocksize; 4580 int ncopies; 4581 char *strval; 4582 4583 if (nvlist_lookup_string(props, 4584 zfs_prop_to_name(ZFS_PROP_COPIES), &strval) == 0) 4585 ncopies = atoi(strval); 4586 else 4587 ncopies = 1; 4588 if (nvlist_lookup_uint64(props, 4589 zfs_prop_to_name(ZFS_PROP_VOLBLOCKSIZE), 4590 &volblocksize) != 0) 4591 volblocksize = ZVOL_DEFAULT_BLOCKSIZE; 4592 nblocks = volsize/volblocksize; 4593 /* start with metadnode L0-L6 */ 4594 numdb = 7; 4595 /* calculate number of indirects */ 4596 while (nblocks > 1) { 4597 nblocks += DNODES_PER_LEVEL - 1; 4598 nblocks /= DNODES_PER_LEVEL; 4599 numdb += nblocks; 4600 } 4601 numdb *= MIN(SPA_DVAS_PER_BP, ncopies + 1); 4602 volsize *= ncopies; 4603 /* 4604 * this is exactly DN_MAX_INDBLKSHIFT when metadata isn't 4605 * compressed, but in practice they compress down to about 4606 * 1100 bytes 4607 */ 4608 numdb *= 1ULL << DN_MAX_INDBLKSHIFT; 4609 volsize += numdb; 4610 return (volsize); 4611 } 4612