libzfs_dataset.c revision 263405
1/* 2 * CDDL HEADER START 3 * 4 * The contents of this file are subject to the terms of the 5 * Common Development and Distribution License (the "License"). 6 * You may not use this file except in compliance with the License. 7 * 8 * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE 9 * or http://www.opensolaris.org/os/licensing. 10 * See the License for the specific language governing permissions 11 * and limitations under the License. 12 * 13 * When distributing Covered Code, include this CDDL HEADER in each 14 * file and include the License file at usr/src/OPENSOLARIS.LICENSE. 15 * If applicable, add the following below this CDDL HEADER, with the 16 * fields enclosed by brackets "[]" replaced with your own identifying 17 * information: Portions Copyright [yyyy] [name of copyright owner] 18 * 19 * CDDL HEADER END 20 */ 21 22/* 23 * Copyright (c) 2005, 2010, Oracle and/or its affiliates. All rights reserved. 24 * Copyright (c) 2013 by Delphix. All rights reserved. 25 * Copyright (c) 2012 DEY Storage Systems, Inc. All rights reserved. 26 * Copyright (c) 2011-2012 Pawel Jakub Dawidek <pawel@dawidek.net>. 27 * All rights reserved. 28 * Copyright (c) 2012 Martin Matuska <mm@FreeBSD.org>. All rights reserved. 29 * Copyright (c) 2013 Steven Hartland. All rights reserved. 30 * Copyright 2013 Nexenta Systems, Inc. All rights reserved. 31 */ 32 33#include <ctype.h> 34#include <errno.h> 35#include <libintl.h> 36#include <math.h> 37#include <stdio.h> 38#include <stdlib.h> 39#include <strings.h> 40#include <unistd.h> 41#include <stddef.h> 42#include <zone.h> 43#include <fcntl.h> 44#include <sys/mntent.h> 45#include <sys/mount.h> 46#include <priv.h> 47#include <pwd.h> 48#include <grp.h> 49#include <stddef.h> 50#include <idmap.h> 51 52#include <sys/dnode.h> 53#include <sys/spa.h> 54#include <sys/zap.h> 55#include <sys/misc.h> 56#include <libzfs.h> 57 58#include "zfs_namecheck.h" 59#include "zfs_prop.h" 60#include "libzfs_impl.h" 61#include "zfs_deleg.h" 62 63static int userquota_propname_decode(const char *propname, boolean_t zoned, 64 zfs_userquota_prop_t *typep, char *domain, int domainlen, uint64_t *ridp); 65 66/* 67 * Given a single type (not a mask of types), return the type in a human 68 * readable form. 69 */ 70const char * 71zfs_type_to_name(zfs_type_t type) 72{ 73 switch (type) { 74 case ZFS_TYPE_FILESYSTEM: 75 return (dgettext(TEXT_DOMAIN, "filesystem")); 76 case ZFS_TYPE_SNAPSHOT: 77 return (dgettext(TEXT_DOMAIN, "snapshot")); 78 case ZFS_TYPE_VOLUME: 79 return (dgettext(TEXT_DOMAIN, "volume")); 80 } 81 82 return (NULL); 83} 84 85/* 86 * Given a path and mask of ZFS types, return a string describing this dataset. 87 * This is used when we fail to open a dataset and we cannot get an exact type. 88 * We guess what the type would have been based on the path and the mask of 89 * acceptable types. 90 */ 91static const char * 92path_to_str(const char *path, int types) 93{ 94 /* 95 * When given a single type, always report the exact type. 96 */ 97 if (types == ZFS_TYPE_SNAPSHOT) 98 return (dgettext(TEXT_DOMAIN, "snapshot")); 99 if (types == ZFS_TYPE_FILESYSTEM) 100 return (dgettext(TEXT_DOMAIN, "filesystem")); 101 if (types == ZFS_TYPE_VOLUME) 102 return (dgettext(TEXT_DOMAIN, "volume")); 103 104 /* 105 * The user is requesting more than one type of dataset. If this is the 106 * case, consult the path itself. If we're looking for a snapshot, and 107 * a '@' is found, then report it as "snapshot". Otherwise, remove the 108 * snapshot attribute and try again. 109 */ 110 if (types & ZFS_TYPE_SNAPSHOT) { 111 if (strchr(path, '@') != NULL) 112 return (dgettext(TEXT_DOMAIN, "snapshot")); 113 return (path_to_str(path, types & ~ZFS_TYPE_SNAPSHOT)); 114 } 115 116 /* 117 * The user has requested either filesystems or volumes. 118 * We have no way of knowing a priori what type this would be, so always 119 * report it as "filesystem" or "volume", our two primitive types. 120 */ 121 if (types & ZFS_TYPE_FILESYSTEM) 122 return (dgettext(TEXT_DOMAIN, "filesystem")); 123 124 assert(types & ZFS_TYPE_VOLUME); 125 return (dgettext(TEXT_DOMAIN, "volume")); 126} 127 128/* 129 * Validate a ZFS path. This is used even before trying to open the dataset, to 130 * provide a more meaningful error message. We call zfs_error_aux() to 131 * explain exactly why the name was not valid. 132 */ 133int 134zfs_validate_name(libzfs_handle_t *hdl, const char *path, int type, 135 boolean_t modifying) 136{ 137 namecheck_err_t why; 138 char what; 139 140 (void) zfs_prop_get_table(); 141 if (dataset_namecheck(path, &why, &what) != 0) { 142 if (hdl != NULL) { 143 switch (why) { 144 case NAME_ERR_TOOLONG: 145 zfs_error_aux(hdl, dgettext(TEXT_DOMAIN, 146 "name is too long")); 147 break; 148 149 case NAME_ERR_LEADING_SLASH: 150 zfs_error_aux(hdl, dgettext(TEXT_DOMAIN, 151 "leading slash in name")); 152 break; 153 154 case NAME_ERR_EMPTY_COMPONENT: 155 zfs_error_aux(hdl, dgettext(TEXT_DOMAIN, 156 "empty component in name")); 157 break; 158 159 case NAME_ERR_TRAILING_SLASH: 160 zfs_error_aux(hdl, dgettext(TEXT_DOMAIN, 161 "trailing slash in name")); 162 break; 163 164 case NAME_ERR_INVALCHAR: 165 zfs_error_aux(hdl, 166 dgettext(TEXT_DOMAIN, "invalid character " 167 "'%c' in name"), what); 168 break; 169 170 case NAME_ERR_MULTIPLE_AT: 171 zfs_error_aux(hdl, dgettext(TEXT_DOMAIN, 172 "multiple '@' delimiters in name")); 173 break; 174 175 case NAME_ERR_NOLETTER: 176 zfs_error_aux(hdl, dgettext(TEXT_DOMAIN, 177 "pool doesn't begin with a letter")); 178 break; 179 180 case NAME_ERR_RESERVED: 181 zfs_error_aux(hdl, dgettext(TEXT_DOMAIN, 182 "name is reserved")); 183 break; 184 185 case NAME_ERR_DISKLIKE: 186 zfs_error_aux(hdl, dgettext(TEXT_DOMAIN, 187 "reserved disk name")); 188 break; 189 } 190 } 191 192 return (0); 193 } 194 195 if (!(type & ZFS_TYPE_SNAPSHOT) && strchr(path, '@') != NULL) { 196 if (hdl != NULL) 197 zfs_error_aux(hdl, dgettext(TEXT_DOMAIN, 198 "snapshot delimiter '@' in filesystem name")); 199 return (0); 200 } 201 202 if (type == ZFS_TYPE_SNAPSHOT && strchr(path, '@') == NULL) { 203 if (hdl != NULL) 204 zfs_error_aux(hdl, dgettext(TEXT_DOMAIN, 205 "missing '@' delimiter in snapshot name")); 206 return (0); 207 } 208 209 if (modifying && strchr(path, '%') != NULL) { 210 if (hdl != NULL) 211 zfs_error_aux(hdl, dgettext(TEXT_DOMAIN, 212 "invalid character %c in name"), '%'); 213 return (0); 214 } 215 216 return (-1); 217} 218 219int 220zfs_name_valid(const char *name, zfs_type_t type) 221{ 222 if (type == ZFS_TYPE_POOL) 223 return (zpool_name_valid(NULL, B_FALSE, name)); 224 return (zfs_validate_name(NULL, name, type, B_FALSE)); 225} 226 227/* 228 * This function takes the raw DSL properties, and filters out the user-defined 229 * properties into a separate nvlist. 230 */ 231static nvlist_t * 232process_user_props(zfs_handle_t *zhp, nvlist_t *props) 233{ 234 libzfs_handle_t *hdl = zhp->zfs_hdl; 235 nvpair_t *elem; 236 nvlist_t *propval; 237 nvlist_t *nvl; 238 239 if (nvlist_alloc(&nvl, NV_UNIQUE_NAME, 0) != 0) { 240 (void) no_memory(hdl); 241 return (NULL); 242 } 243 244 elem = NULL; 245 while ((elem = nvlist_next_nvpair(props, elem)) != NULL) { 246 if (!zfs_prop_user(nvpair_name(elem))) 247 continue; 248 249 verify(nvpair_value_nvlist(elem, &propval) == 0); 250 if (nvlist_add_nvlist(nvl, nvpair_name(elem), propval) != 0) { 251 nvlist_free(nvl); 252 (void) no_memory(hdl); 253 return (NULL); 254 } 255 } 256 257 return (nvl); 258} 259 260static zpool_handle_t * 261zpool_add_handle(zfs_handle_t *zhp, const char *pool_name) 262{ 263 libzfs_handle_t *hdl = zhp->zfs_hdl; 264 zpool_handle_t *zph; 265 266 if ((zph = zpool_open_canfail(hdl, pool_name)) != NULL) { 267 if (hdl->libzfs_pool_handles != NULL) 268 zph->zpool_next = hdl->libzfs_pool_handles; 269 hdl->libzfs_pool_handles = zph; 270 } 271 return (zph); 272} 273 274static zpool_handle_t * 275zpool_find_handle(zfs_handle_t *zhp, const char *pool_name, int len) 276{ 277 libzfs_handle_t *hdl = zhp->zfs_hdl; 278 zpool_handle_t *zph = hdl->libzfs_pool_handles; 279 280 while ((zph != NULL) && 281 (strncmp(pool_name, zpool_get_name(zph), len) != 0)) 282 zph = zph->zpool_next; 283 return (zph); 284} 285 286/* 287 * Returns a handle to the pool that contains the provided dataset. 288 * If a handle to that pool already exists then that handle is returned. 289 * Otherwise, a new handle is created and added to the list of handles. 290 */ 291static zpool_handle_t * 292zpool_handle(zfs_handle_t *zhp) 293{ 294 char *pool_name; 295 int len; 296 zpool_handle_t *zph; 297 298 len = strcspn(zhp->zfs_name, "/@") + 1; 299 pool_name = zfs_alloc(zhp->zfs_hdl, len); 300 (void) strlcpy(pool_name, zhp->zfs_name, len); 301 302 zph = zpool_find_handle(zhp, pool_name, len); 303 if (zph == NULL) 304 zph = zpool_add_handle(zhp, pool_name); 305 306 free(pool_name); 307 return (zph); 308} 309 310void 311zpool_free_handles(libzfs_handle_t *hdl) 312{ 313 zpool_handle_t *next, *zph = hdl->libzfs_pool_handles; 314 315 while (zph != NULL) { 316 next = zph->zpool_next; 317 zpool_close(zph); 318 zph = next; 319 } 320 hdl->libzfs_pool_handles = NULL; 321} 322 323/* 324 * Utility function to gather stats (objset and zpl) for the given object. 325 */ 326static int 327get_stats_ioctl(zfs_handle_t *zhp, zfs_cmd_t *zc) 328{ 329 libzfs_handle_t *hdl = zhp->zfs_hdl; 330 331 (void) strlcpy(zc->zc_name, zhp->zfs_name, sizeof (zc->zc_name)); 332 333 while (ioctl(hdl->libzfs_fd, ZFS_IOC_OBJSET_STATS, zc) != 0) { 334 if (errno == ENOMEM) { 335 if (zcmd_expand_dst_nvlist(hdl, zc) != 0) { 336 return (-1); 337 } 338 } else { 339 return (-1); 340 } 341 } 342 return (0); 343} 344 345/* 346 * Utility function to get the received properties of the given object. 347 */ 348static int 349get_recvd_props_ioctl(zfs_handle_t *zhp) 350{ 351 libzfs_handle_t *hdl = zhp->zfs_hdl; 352 nvlist_t *recvdprops; 353 zfs_cmd_t zc = { 0 }; 354 int err; 355 356 if (zcmd_alloc_dst_nvlist(hdl, &zc, 0) != 0) 357 return (-1); 358 359 (void) strlcpy(zc.zc_name, zhp->zfs_name, sizeof (zc.zc_name)); 360 361 while (ioctl(hdl->libzfs_fd, ZFS_IOC_OBJSET_RECVD_PROPS, &zc) != 0) { 362 if (errno == ENOMEM) { 363 if (zcmd_expand_dst_nvlist(hdl, &zc) != 0) { 364 return (-1); 365 } 366 } else { 367 zcmd_free_nvlists(&zc); 368 return (-1); 369 } 370 } 371 372 err = zcmd_read_dst_nvlist(zhp->zfs_hdl, &zc, &recvdprops); 373 zcmd_free_nvlists(&zc); 374 if (err != 0) 375 return (-1); 376 377 nvlist_free(zhp->zfs_recvd_props); 378 zhp->zfs_recvd_props = recvdprops; 379 380 return (0); 381} 382 383static int 384put_stats_zhdl(zfs_handle_t *zhp, zfs_cmd_t *zc) 385{ 386 nvlist_t *allprops, *userprops; 387 388 zhp->zfs_dmustats = zc->zc_objset_stats; /* structure assignment */ 389 390 if (zcmd_read_dst_nvlist(zhp->zfs_hdl, zc, &allprops) != 0) { 391 return (-1); 392 } 393 394 /* 395 * XXX Why do we store the user props separately, in addition to 396 * storing them in zfs_props? 397 */ 398 if ((userprops = process_user_props(zhp, allprops)) == NULL) { 399 nvlist_free(allprops); 400 return (-1); 401 } 402 403 nvlist_free(zhp->zfs_props); 404 nvlist_free(zhp->zfs_user_props); 405 406 zhp->zfs_props = allprops; 407 zhp->zfs_user_props = userprops; 408 409 return (0); 410} 411 412static int 413get_stats(zfs_handle_t *zhp) 414{ 415 int rc = 0; 416 zfs_cmd_t zc = { 0 }; 417 418 if (zcmd_alloc_dst_nvlist(zhp->zfs_hdl, &zc, 0) != 0) 419 return (-1); 420 if (get_stats_ioctl(zhp, &zc) != 0) 421 rc = -1; 422 else if (put_stats_zhdl(zhp, &zc) != 0) 423 rc = -1; 424 zcmd_free_nvlists(&zc); 425 return (rc); 426} 427 428/* 429 * Refresh the properties currently stored in the handle. 430 */ 431void 432zfs_refresh_properties(zfs_handle_t *zhp) 433{ 434 (void) get_stats(zhp); 435} 436 437/* 438 * Makes a handle from the given dataset name. Used by zfs_open() and 439 * zfs_iter_* to create child handles on the fly. 440 */ 441static int 442make_dataset_handle_common(zfs_handle_t *zhp, zfs_cmd_t *zc) 443{ 444 if (put_stats_zhdl(zhp, zc) != 0) 445 return (-1); 446 447 /* 448 * We've managed to open the dataset and gather statistics. Determine 449 * the high-level type. 450 */ 451 if (zhp->zfs_dmustats.dds_type == DMU_OST_ZVOL) 452 zhp->zfs_head_type = ZFS_TYPE_VOLUME; 453 else if (zhp->zfs_dmustats.dds_type == DMU_OST_ZFS) 454 zhp->zfs_head_type = ZFS_TYPE_FILESYSTEM; 455 else 456 abort(); 457 458 if (zhp->zfs_dmustats.dds_is_snapshot) 459 zhp->zfs_type = ZFS_TYPE_SNAPSHOT; 460 else if (zhp->zfs_dmustats.dds_type == DMU_OST_ZVOL) 461 zhp->zfs_type = ZFS_TYPE_VOLUME; 462 else if (zhp->zfs_dmustats.dds_type == DMU_OST_ZFS) 463 zhp->zfs_type = ZFS_TYPE_FILESYSTEM; 464 else 465 abort(); /* we should never see any other types */ 466 467 if ((zhp->zpool_hdl = zpool_handle(zhp)) == NULL) 468 return (-1); 469 470 return (0); 471} 472 473zfs_handle_t * 474make_dataset_handle(libzfs_handle_t *hdl, const char *path) 475{ 476 zfs_cmd_t zc = { 0 }; 477 478 zfs_handle_t *zhp = calloc(sizeof (zfs_handle_t), 1); 479 480 if (zhp == NULL) 481 return (NULL); 482 483 zhp->zfs_hdl = hdl; 484 (void) strlcpy(zhp->zfs_name, path, sizeof (zhp->zfs_name)); 485 if (zcmd_alloc_dst_nvlist(hdl, &zc, 0) != 0) { 486 free(zhp); 487 return (NULL); 488 } 489 if (get_stats_ioctl(zhp, &zc) == -1) { 490 zcmd_free_nvlists(&zc); 491 free(zhp); 492 return (NULL); 493 } 494 if (make_dataset_handle_common(zhp, &zc) == -1) { 495 free(zhp); 496 zhp = NULL; 497 } 498 zcmd_free_nvlists(&zc); 499 return (zhp); 500} 501 502zfs_handle_t * 503make_dataset_handle_zc(libzfs_handle_t *hdl, zfs_cmd_t *zc) 504{ 505 zfs_handle_t *zhp = calloc(sizeof (zfs_handle_t), 1); 506 507 if (zhp == NULL) 508 return (NULL); 509 510 zhp->zfs_hdl = hdl; 511 (void) strlcpy(zhp->zfs_name, zc->zc_name, sizeof (zhp->zfs_name)); 512 if (make_dataset_handle_common(zhp, zc) == -1) { 513 free(zhp); 514 return (NULL); 515 } 516 return (zhp); 517} 518 519zfs_handle_t * 520make_dataset_simple_handle_zc(zfs_handle_t *pzhp, zfs_cmd_t *zc) 521{ 522 zfs_handle_t *zhp = calloc(sizeof (zfs_handle_t), 1); 523 524 if (zhp == NULL) 525 return (NULL); 526 527 zhp->zfs_hdl = pzhp->zfs_hdl; 528 (void) strlcpy(zhp->zfs_name, zc->zc_name, sizeof (zhp->zfs_name)); 529 zhp->zfs_head_type = pzhp->zfs_type; 530 zhp->zfs_type = ZFS_TYPE_SNAPSHOT; 531 zhp->zpool_hdl = zpool_handle(zhp); 532 return (zhp); 533} 534 535zfs_handle_t * 536zfs_handle_dup(zfs_handle_t *zhp_orig) 537{ 538 zfs_handle_t *zhp = calloc(sizeof (zfs_handle_t), 1); 539 540 if (zhp == NULL) 541 return (NULL); 542 543 zhp->zfs_hdl = zhp_orig->zfs_hdl; 544 zhp->zpool_hdl = zhp_orig->zpool_hdl; 545 (void) strlcpy(zhp->zfs_name, zhp_orig->zfs_name, 546 sizeof (zhp->zfs_name)); 547 zhp->zfs_type = zhp_orig->zfs_type; 548 zhp->zfs_head_type = zhp_orig->zfs_head_type; 549 zhp->zfs_dmustats = zhp_orig->zfs_dmustats; 550 if (zhp_orig->zfs_props != NULL) { 551 if (nvlist_dup(zhp_orig->zfs_props, &zhp->zfs_props, 0) != 0) { 552 (void) no_memory(zhp->zfs_hdl); 553 zfs_close(zhp); 554 return (NULL); 555 } 556 } 557 if (zhp_orig->zfs_user_props != NULL) { 558 if (nvlist_dup(zhp_orig->zfs_user_props, 559 &zhp->zfs_user_props, 0) != 0) { 560 (void) no_memory(zhp->zfs_hdl); 561 zfs_close(zhp); 562 return (NULL); 563 } 564 } 565 if (zhp_orig->zfs_recvd_props != NULL) { 566 if (nvlist_dup(zhp_orig->zfs_recvd_props, 567 &zhp->zfs_recvd_props, 0)) { 568 (void) no_memory(zhp->zfs_hdl); 569 zfs_close(zhp); 570 return (NULL); 571 } 572 } 573 zhp->zfs_mntcheck = zhp_orig->zfs_mntcheck; 574 if (zhp_orig->zfs_mntopts != NULL) { 575 zhp->zfs_mntopts = zfs_strdup(zhp_orig->zfs_hdl, 576 zhp_orig->zfs_mntopts); 577 } 578 zhp->zfs_props_table = zhp_orig->zfs_props_table; 579 return (zhp); 580} 581 582/* 583 * Opens the given snapshot, filesystem, or volume. The 'types' 584 * argument is a mask of acceptable types. The function will print an 585 * appropriate error message and return NULL if it can't be opened. 586 */ 587zfs_handle_t * 588zfs_open(libzfs_handle_t *hdl, const char *path, int types) 589{ 590 zfs_handle_t *zhp; 591 char errbuf[1024]; 592 593 (void) snprintf(errbuf, sizeof (errbuf), 594 dgettext(TEXT_DOMAIN, "cannot open '%s'"), path); 595 596 /* 597 * Validate the name before we even try to open it. 598 */ 599 if (!zfs_validate_name(hdl, path, ZFS_TYPE_DATASET, B_FALSE)) { 600 zfs_error_aux(hdl, dgettext(TEXT_DOMAIN, 601 "invalid dataset name")); 602 (void) zfs_error(hdl, EZFS_INVALIDNAME, errbuf); 603 return (NULL); 604 } 605 606 /* 607 * Try to get stats for the dataset, which will tell us if it exists. 608 */ 609 errno = 0; 610 if ((zhp = make_dataset_handle(hdl, path)) == NULL) { 611 (void) zfs_standard_error(hdl, errno, errbuf); 612 return (NULL); 613 } 614 615 if (zhp == NULL) { 616 char *at = strchr(path, '@'); 617 618 if (at != NULL) 619 *at = '\0'; 620 errno = 0; 621 if ((zhp = make_dataset_handle(hdl, path)) == NULL) { 622 (void) zfs_standard_error(hdl, errno, errbuf); 623 return (NULL); 624 } 625 if (at != NULL) 626 *at = '@'; 627 (void) strlcpy(zhp->zfs_name, path, sizeof (zhp->zfs_name)); 628 zhp->zfs_type = ZFS_TYPE_SNAPSHOT; 629 } 630 631 if (!(types & zhp->zfs_type)) { 632 (void) zfs_error(hdl, EZFS_BADTYPE, errbuf); 633 zfs_close(zhp); 634 return (NULL); 635 } 636 637 return (zhp); 638} 639 640/* 641 * Release a ZFS handle. Nothing to do but free the associated memory. 642 */ 643void 644zfs_close(zfs_handle_t *zhp) 645{ 646 if (zhp->zfs_mntopts) 647 free(zhp->zfs_mntopts); 648 nvlist_free(zhp->zfs_props); 649 nvlist_free(zhp->zfs_user_props); 650 nvlist_free(zhp->zfs_recvd_props); 651 free(zhp); 652} 653 654typedef struct mnttab_node { 655 struct mnttab mtn_mt; 656 avl_node_t mtn_node; 657} mnttab_node_t; 658 659static int 660libzfs_mnttab_cache_compare(const void *arg1, const void *arg2) 661{ 662 const mnttab_node_t *mtn1 = arg1; 663 const mnttab_node_t *mtn2 = arg2; 664 int rv; 665 666 rv = strcmp(mtn1->mtn_mt.mnt_special, mtn2->mtn_mt.mnt_special); 667 668 if (rv == 0) 669 return (0); 670 return (rv > 0 ? 1 : -1); 671} 672 673void 674libzfs_mnttab_init(libzfs_handle_t *hdl) 675{ 676 assert(avl_numnodes(&hdl->libzfs_mnttab_cache) == 0); 677 avl_create(&hdl->libzfs_mnttab_cache, libzfs_mnttab_cache_compare, 678 sizeof (mnttab_node_t), offsetof(mnttab_node_t, mtn_node)); 679} 680 681void 682libzfs_mnttab_update(libzfs_handle_t *hdl) 683{ 684 struct mnttab entry; 685 686 rewind(hdl->libzfs_mnttab); 687 while (getmntent(hdl->libzfs_mnttab, &entry) == 0) { 688 mnttab_node_t *mtn; 689 690 if (strcmp(entry.mnt_fstype, MNTTYPE_ZFS) != 0) 691 continue; 692 mtn = zfs_alloc(hdl, sizeof (mnttab_node_t)); 693 mtn->mtn_mt.mnt_special = zfs_strdup(hdl, entry.mnt_special); 694 mtn->mtn_mt.mnt_mountp = zfs_strdup(hdl, entry.mnt_mountp); 695 mtn->mtn_mt.mnt_fstype = zfs_strdup(hdl, entry.mnt_fstype); 696 mtn->mtn_mt.mnt_mntopts = zfs_strdup(hdl, entry.mnt_mntopts); 697 avl_add(&hdl->libzfs_mnttab_cache, mtn); 698 } 699} 700 701void 702libzfs_mnttab_fini(libzfs_handle_t *hdl) 703{ 704 void *cookie = NULL; 705 mnttab_node_t *mtn; 706 707 while (mtn = avl_destroy_nodes(&hdl->libzfs_mnttab_cache, &cookie)) { 708 free(mtn->mtn_mt.mnt_special); 709 free(mtn->mtn_mt.mnt_mountp); 710 free(mtn->mtn_mt.mnt_fstype); 711 free(mtn->mtn_mt.mnt_mntopts); 712 free(mtn); 713 } 714 avl_destroy(&hdl->libzfs_mnttab_cache); 715} 716 717void 718libzfs_mnttab_cache(libzfs_handle_t *hdl, boolean_t enable) 719{ 720 hdl->libzfs_mnttab_enable = enable; 721} 722 723int 724libzfs_mnttab_find(libzfs_handle_t *hdl, const char *fsname, 725 struct mnttab *entry) 726{ 727 mnttab_node_t find; 728 mnttab_node_t *mtn; 729 730 if (!hdl->libzfs_mnttab_enable) { 731 struct mnttab srch = { 0 }; 732 733 if (avl_numnodes(&hdl->libzfs_mnttab_cache)) 734 libzfs_mnttab_fini(hdl); 735 rewind(hdl->libzfs_mnttab); 736 srch.mnt_special = (char *)fsname; 737 srch.mnt_fstype = MNTTYPE_ZFS; 738 if (getmntany(hdl->libzfs_mnttab, entry, &srch) == 0) 739 return (0); 740 else 741 return (ENOENT); 742 } 743 744 if (avl_numnodes(&hdl->libzfs_mnttab_cache) == 0) 745 libzfs_mnttab_update(hdl); 746 747 find.mtn_mt.mnt_special = (char *)fsname; 748 mtn = avl_find(&hdl->libzfs_mnttab_cache, &find, NULL); 749 if (mtn) { 750 *entry = mtn->mtn_mt; 751 return (0); 752 } 753 return (ENOENT); 754} 755 756void 757libzfs_mnttab_add(libzfs_handle_t *hdl, const char *special, 758 const char *mountp, const char *mntopts) 759{ 760 mnttab_node_t *mtn; 761 762 if (avl_numnodes(&hdl->libzfs_mnttab_cache) == 0) 763 return; 764 mtn = zfs_alloc(hdl, sizeof (mnttab_node_t)); 765 mtn->mtn_mt.mnt_special = zfs_strdup(hdl, special); 766 mtn->mtn_mt.mnt_mountp = zfs_strdup(hdl, mountp); 767 mtn->mtn_mt.mnt_fstype = zfs_strdup(hdl, MNTTYPE_ZFS); 768 mtn->mtn_mt.mnt_mntopts = zfs_strdup(hdl, mntopts); 769 avl_add(&hdl->libzfs_mnttab_cache, mtn); 770} 771 772void 773libzfs_mnttab_remove(libzfs_handle_t *hdl, const char *fsname) 774{ 775 mnttab_node_t find; 776 mnttab_node_t *ret; 777 778 find.mtn_mt.mnt_special = (char *)fsname; 779 if (ret = avl_find(&hdl->libzfs_mnttab_cache, (void *)&find, NULL)) { 780 avl_remove(&hdl->libzfs_mnttab_cache, ret); 781 free(ret->mtn_mt.mnt_special); 782 free(ret->mtn_mt.mnt_mountp); 783 free(ret->mtn_mt.mnt_fstype); 784 free(ret->mtn_mt.mnt_mntopts); 785 free(ret); 786 } 787} 788 789int 790zfs_spa_version(zfs_handle_t *zhp, int *spa_version) 791{ 792 zpool_handle_t *zpool_handle = zhp->zpool_hdl; 793 794 if (zpool_handle == NULL) 795 return (-1); 796 797 *spa_version = zpool_get_prop_int(zpool_handle, 798 ZPOOL_PROP_VERSION, NULL); 799 return (0); 800} 801 802/* 803 * The choice of reservation property depends on the SPA version. 804 */ 805static int 806zfs_which_resv_prop(zfs_handle_t *zhp, zfs_prop_t *resv_prop) 807{ 808 int spa_version; 809 810 if (zfs_spa_version(zhp, &spa_version) < 0) 811 return (-1); 812 813 if (spa_version >= SPA_VERSION_REFRESERVATION) 814 *resv_prop = ZFS_PROP_REFRESERVATION; 815 else 816 *resv_prop = ZFS_PROP_RESERVATION; 817 818 return (0); 819} 820 821/* 822 * Given an nvlist of properties to set, validates that they are correct, and 823 * parses any numeric properties (index, boolean, etc) if they are specified as 824 * strings. 825 */ 826nvlist_t * 827zfs_valid_proplist(libzfs_handle_t *hdl, zfs_type_t type, nvlist_t *nvl, 828 uint64_t zoned, zfs_handle_t *zhp, const char *errbuf) 829{ 830 nvpair_t *elem; 831 uint64_t intval; 832 char *strval; 833 zfs_prop_t prop; 834 nvlist_t *ret; 835 int chosen_normal = -1; 836 int chosen_utf = -1; 837 838 if (nvlist_alloc(&ret, NV_UNIQUE_NAME, 0) != 0) { 839 (void) no_memory(hdl); 840 return (NULL); 841 } 842 843 /* 844 * Make sure this property is valid and applies to this type. 845 */ 846 847 elem = NULL; 848 while ((elem = nvlist_next_nvpair(nvl, elem)) != NULL) { 849 const char *propname = nvpair_name(elem); 850 851 prop = zfs_name_to_prop(propname); 852 if (prop == ZPROP_INVAL && zfs_prop_user(propname)) { 853 /* 854 * This is a user property: make sure it's a 855 * string, and that it's less than ZAP_MAXNAMELEN. 856 */ 857 if (nvpair_type(elem) != DATA_TYPE_STRING) { 858 zfs_error_aux(hdl, dgettext(TEXT_DOMAIN, 859 "'%s' must be a string"), propname); 860 (void) zfs_error(hdl, EZFS_BADPROP, errbuf); 861 goto error; 862 } 863 864 if (strlen(nvpair_name(elem)) >= ZAP_MAXNAMELEN) { 865 zfs_error_aux(hdl, dgettext(TEXT_DOMAIN, 866 "property name '%s' is too long"), 867 propname); 868 (void) zfs_error(hdl, EZFS_BADPROP, errbuf); 869 goto error; 870 } 871 872 (void) nvpair_value_string(elem, &strval); 873 if (nvlist_add_string(ret, propname, strval) != 0) { 874 (void) no_memory(hdl); 875 goto error; 876 } 877 continue; 878 } 879 880 /* 881 * Currently, only user properties can be modified on 882 * snapshots. 883 */ 884 if (type == ZFS_TYPE_SNAPSHOT) { 885 zfs_error_aux(hdl, dgettext(TEXT_DOMAIN, 886 "this property can not be modified for snapshots")); 887 (void) zfs_error(hdl, EZFS_PROPTYPE, errbuf); 888 goto error; 889 } 890 891 if (prop == ZPROP_INVAL && zfs_prop_userquota(propname)) { 892 zfs_userquota_prop_t uqtype; 893 char newpropname[128]; 894 char domain[128]; 895 uint64_t rid; 896 uint64_t valary[3]; 897 898 if (userquota_propname_decode(propname, zoned, 899 &uqtype, domain, sizeof (domain), &rid) != 0) { 900 zfs_error_aux(hdl, 901 dgettext(TEXT_DOMAIN, 902 "'%s' has an invalid user/group name"), 903 propname); 904 (void) zfs_error(hdl, EZFS_BADPROP, errbuf); 905 goto error; 906 } 907 908 if (uqtype != ZFS_PROP_USERQUOTA && 909 uqtype != ZFS_PROP_GROUPQUOTA) { 910 zfs_error_aux(hdl, 911 dgettext(TEXT_DOMAIN, "'%s' is readonly"), 912 propname); 913 (void) zfs_error(hdl, EZFS_PROPREADONLY, 914 errbuf); 915 goto error; 916 } 917 918 if (nvpair_type(elem) == DATA_TYPE_STRING) { 919 (void) nvpair_value_string(elem, &strval); 920 if (strcmp(strval, "none") == 0) { 921 intval = 0; 922 } else if (zfs_nicestrtonum(hdl, 923 strval, &intval) != 0) { 924 (void) zfs_error(hdl, 925 EZFS_BADPROP, errbuf); 926 goto error; 927 } 928 } else if (nvpair_type(elem) == 929 DATA_TYPE_UINT64) { 930 (void) nvpair_value_uint64(elem, &intval); 931 if (intval == 0) { 932 zfs_error_aux(hdl, dgettext(TEXT_DOMAIN, 933 "use 'none' to disable " 934 "userquota/groupquota")); 935 goto error; 936 } 937 } else { 938 zfs_error_aux(hdl, dgettext(TEXT_DOMAIN, 939 "'%s' must be a number"), propname); 940 (void) zfs_error(hdl, EZFS_BADPROP, errbuf); 941 goto error; 942 } 943 944 /* 945 * Encode the prop name as 946 * userquota@<hex-rid>-domain, to make it easy 947 * for the kernel to decode. 948 */ 949 (void) snprintf(newpropname, sizeof (newpropname), 950 "%s%llx-%s", zfs_userquota_prop_prefixes[uqtype], 951 (longlong_t)rid, domain); 952 valary[0] = uqtype; 953 valary[1] = rid; 954 valary[2] = intval; 955 if (nvlist_add_uint64_array(ret, newpropname, 956 valary, 3) != 0) { 957 (void) no_memory(hdl); 958 goto error; 959 } 960 continue; 961 } else if (prop == ZPROP_INVAL && zfs_prop_written(propname)) { 962 zfs_error_aux(hdl, dgettext(TEXT_DOMAIN, 963 "'%s' is readonly"), 964 propname); 965 (void) zfs_error(hdl, EZFS_PROPREADONLY, errbuf); 966 goto error; 967 } 968 969 if (prop == ZPROP_INVAL) { 970 zfs_error_aux(hdl, dgettext(TEXT_DOMAIN, 971 "invalid property '%s'"), propname); 972 (void) zfs_error(hdl, EZFS_BADPROP, errbuf); 973 goto error; 974 } 975 976 if (!zfs_prop_valid_for_type(prop, type)) { 977 zfs_error_aux(hdl, 978 dgettext(TEXT_DOMAIN, "'%s' does not " 979 "apply to datasets of this type"), propname); 980 (void) zfs_error(hdl, EZFS_PROPTYPE, errbuf); 981 goto error; 982 } 983 984 if (zfs_prop_readonly(prop) && 985 (!zfs_prop_setonce(prop) || zhp != NULL)) { 986 zfs_error_aux(hdl, 987 dgettext(TEXT_DOMAIN, "'%s' is readonly"), 988 propname); 989 (void) zfs_error(hdl, EZFS_PROPREADONLY, errbuf); 990 goto error; 991 } 992 993 if (zprop_parse_value(hdl, elem, prop, type, ret, 994 &strval, &intval, errbuf) != 0) 995 goto error; 996 997 /* 998 * Perform some additional checks for specific properties. 999 */ 1000 switch (prop) { 1001 case ZFS_PROP_VERSION: 1002 { 1003 int version; 1004 1005 if (zhp == NULL) 1006 break; 1007 version = zfs_prop_get_int(zhp, ZFS_PROP_VERSION); 1008 if (intval < version) { 1009 zfs_error_aux(hdl, dgettext(TEXT_DOMAIN, 1010 "Can not downgrade; already at version %u"), 1011 version); 1012 (void) zfs_error(hdl, EZFS_BADPROP, errbuf); 1013 goto error; 1014 } 1015 break; 1016 } 1017 1018 case ZFS_PROP_RECORDSIZE: 1019 case ZFS_PROP_VOLBLOCKSIZE: 1020 /* must be power of two within SPA_{MIN,MAX}BLOCKSIZE */ 1021 if (intval < SPA_MINBLOCKSIZE || 1022 intval > SPA_MAXBLOCKSIZE || !ISP2(intval)) { 1023 zfs_error_aux(hdl, dgettext(TEXT_DOMAIN, 1024 "'%s' must be power of 2 from %u " 1025 "to %uk"), propname, 1026 (uint_t)SPA_MINBLOCKSIZE, 1027 (uint_t)SPA_MAXBLOCKSIZE >> 10); 1028 (void) zfs_error(hdl, EZFS_BADPROP, errbuf); 1029 goto error; 1030 } 1031 break; 1032 1033 case ZFS_PROP_MLSLABEL: 1034 { 1035#ifdef sun 1036 /* 1037 * Verify the mlslabel string and convert to 1038 * internal hex label string. 1039 */ 1040 1041 m_label_t *new_sl; 1042 char *hex = NULL; /* internal label string */ 1043 1044 /* Default value is already OK. */ 1045 if (strcasecmp(strval, ZFS_MLSLABEL_DEFAULT) == 0) 1046 break; 1047 1048 /* Verify the label can be converted to binary form */ 1049 if (((new_sl = m_label_alloc(MAC_LABEL)) == NULL) || 1050 (str_to_label(strval, &new_sl, MAC_LABEL, 1051 L_NO_CORRECTION, NULL) == -1)) { 1052 goto badlabel; 1053 } 1054 1055 /* Now translate to hex internal label string */ 1056 if (label_to_str(new_sl, &hex, M_INTERNAL, 1057 DEF_NAMES) != 0) { 1058 if (hex) 1059 free(hex); 1060 goto badlabel; 1061 } 1062 m_label_free(new_sl); 1063 1064 /* If string is already in internal form, we're done. */ 1065 if (strcmp(strval, hex) == 0) { 1066 free(hex); 1067 break; 1068 } 1069 1070 /* Replace the label string with the internal form. */ 1071 (void) nvlist_remove(ret, zfs_prop_to_name(prop), 1072 DATA_TYPE_STRING); 1073 verify(nvlist_add_string(ret, zfs_prop_to_name(prop), 1074 hex) == 0); 1075 free(hex); 1076 1077 break; 1078 1079badlabel: 1080 zfs_error_aux(hdl, dgettext(TEXT_DOMAIN, 1081 "invalid mlslabel '%s'"), strval); 1082 (void) zfs_error(hdl, EZFS_BADPROP, errbuf); 1083 m_label_free(new_sl); /* OK if null */ 1084#else /* !sun */ 1085 zfs_error_aux(hdl, dgettext(TEXT_DOMAIN, 1086 "mlslabel is not supported on FreeBSD")); 1087 (void) zfs_error(hdl, EZFS_BADPROP, errbuf); 1088#endif /* !sun */ 1089 goto error; 1090 1091 } 1092 1093 case ZFS_PROP_MOUNTPOINT: 1094 { 1095 namecheck_err_t why; 1096 1097 if (strcmp(strval, ZFS_MOUNTPOINT_NONE) == 0 || 1098 strcmp(strval, ZFS_MOUNTPOINT_LEGACY) == 0) 1099 break; 1100 1101 if (mountpoint_namecheck(strval, &why)) { 1102 switch (why) { 1103 case NAME_ERR_LEADING_SLASH: 1104 zfs_error_aux(hdl, 1105 dgettext(TEXT_DOMAIN, 1106 "'%s' must be an absolute path, " 1107 "'none', or 'legacy'"), propname); 1108 break; 1109 case NAME_ERR_TOOLONG: 1110 zfs_error_aux(hdl, 1111 dgettext(TEXT_DOMAIN, 1112 "component of '%s' is too long"), 1113 propname); 1114 break; 1115 } 1116 (void) zfs_error(hdl, EZFS_BADPROP, errbuf); 1117 goto error; 1118 } 1119 } 1120 1121 /*FALLTHRU*/ 1122 1123 case ZFS_PROP_SHARESMB: 1124 case ZFS_PROP_SHARENFS: 1125 /* 1126 * For the mountpoint and sharenfs or sharesmb 1127 * properties, check if it can be set in a 1128 * global/non-global zone based on 1129 * the zoned property value: 1130 * 1131 * global zone non-global zone 1132 * -------------------------------------------------- 1133 * zoned=on mountpoint (no) mountpoint (yes) 1134 * sharenfs (no) sharenfs (no) 1135 * sharesmb (no) sharesmb (no) 1136 * 1137 * zoned=off mountpoint (yes) N/A 1138 * sharenfs (yes) 1139 * sharesmb (yes) 1140 */ 1141 if (zoned) { 1142 if (getzoneid() == GLOBAL_ZONEID) { 1143 zfs_error_aux(hdl, dgettext(TEXT_DOMAIN, 1144 "'%s' cannot be set on " 1145 "dataset in a non-global zone"), 1146 propname); 1147 (void) zfs_error(hdl, EZFS_ZONED, 1148 errbuf); 1149 goto error; 1150 } else if (prop == ZFS_PROP_SHARENFS || 1151 prop == ZFS_PROP_SHARESMB) { 1152 zfs_error_aux(hdl, dgettext(TEXT_DOMAIN, 1153 "'%s' cannot be set in " 1154 "a non-global zone"), propname); 1155 (void) zfs_error(hdl, EZFS_ZONED, 1156 errbuf); 1157 goto error; 1158 } 1159 } else if (getzoneid() != GLOBAL_ZONEID) { 1160 /* 1161 * If zoned property is 'off', this must be in 1162 * a global zone. If not, something is wrong. 1163 */ 1164 zfs_error_aux(hdl, dgettext(TEXT_DOMAIN, 1165 "'%s' cannot be set while dataset " 1166 "'zoned' property is set"), propname); 1167 (void) zfs_error(hdl, EZFS_ZONED, errbuf); 1168 goto error; 1169 } 1170 1171 /* 1172 * At this point, it is legitimate to set the 1173 * property. Now we want to make sure that the 1174 * property value is valid if it is sharenfs. 1175 */ 1176 if ((prop == ZFS_PROP_SHARENFS || 1177 prop == ZFS_PROP_SHARESMB) && 1178 strcmp(strval, "on") != 0 && 1179 strcmp(strval, "off") != 0) { 1180 zfs_share_proto_t proto; 1181 1182 if (prop == ZFS_PROP_SHARESMB) 1183 proto = PROTO_SMB; 1184 else 1185 proto = PROTO_NFS; 1186 1187 /* 1188 * Must be an valid sharing protocol 1189 * option string so init the libshare 1190 * in order to enable the parser and 1191 * then parse the options. We use the 1192 * control API since we don't care about 1193 * the current configuration and don't 1194 * want the overhead of loading it 1195 * until we actually do something. 1196 */ 1197 1198 if (zfs_init_libshare(hdl, 1199 SA_INIT_CONTROL_API) != SA_OK) { 1200 /* 1201 * An error occurred so we can't do 1202 * anything 1203 */ 1204 zfs_error_aux(hdl, dgettext(TEXT_DOMAIN, 1205 "'%s' cannot be set: problem " 1206 "in share initialization"), 1207 propname); 1208 (void) zfs_error(hdl, EZFS_BADPROP, 1209 errbuf); 1210 goto error; 1211 } 1212 1213 if (zfs_parse_options(strval, proto) != SA_OK) { 1214 /* 1215 * There was an error in parsing so 1216 * deal with it by issuing an error 1217 * message and leaving after 1218 * uninitializing the the libshare 1219 * interface. 1220 */ 1221 zfs_error_aux(hdl, dgettext(TEXT_DOMAIN, 1222 "'%s' cannot be set to invalid " 1223 "options"), propname); 1224 (void) zfs_error(hdl, EZFS_BADPROP, 1225 errbuf); 1226 zfs_uninit_libshare(hdl); 1227 goto error; 1228 } 1229 zfs_uninit_libshare(hdl); 1230 } 1231 1232 break; 1233 case ZFS_PROP_UTF8ONLY: 1234 chosen_utf = (int)intval; 1235 break; 1236 case ZFS_PROP_NORMALIZE: 1237 chosen_normal = (int)intval; 1238 break; 1239 } 1240 1241 /* 1242 * For changes to existing volumes, we have some additional 1243 * checks to enforce. 1244 */ 1245 if (type == ZFS_TYPE_VOLUME && zhp != NULL) { 1246 uint64_t volsize = zfs_prop_get_int(zhp, 1247 ZFS_PROP_VOLSIZE); 1248 uint64_t blocksize = zfs_prop_get_int(zhp, 1249 ZFS_PROP_VOLBLOCKSIZE); 1250 char buf[64]; 1251 1252 switch (prop) { 1253 case ZFS_PROP_RESERVATION: 1254 case ZFS_PROP_REFRESERVATION: 1255 if (intval > volsize) { 1256 zfs_error_aux(hdl, dgettext(TEXT_DOMAIN, 1257 "'%s' is greater than current " 1258 "volume size"), propname); 1259 (void) zfs_error(hdl, EZFS_BADPROP, 1260 errbuf); 1261 goto error; 1262 } 1263 break; 1264 1265 case ZFS_PROP_VOLSIZE: 1266 if (intval % blocksize != 0) { 1267 zfs_nicenum(blocksize, buf, 1268 sizeof (buf)); 1269 zfs_error_aux(hdl, dgettext(TEXT_DOMAIN, 1270 "'%s' must be a multiple of " 1271 "volume block size (%s)"), 1272 propname, buf); 1273 (void) zfs_error(hdl, EZFS_BADPROP, 1274 errbuf); 1275 goto error; 1276 } 1277 1278 if (intval == 0) { 1279 zfs_error_aux(hdl, dgettext(TEXT_DOMAIN, 1280 "'%s' cannot be zero"), 1281 propname); 1282 (void) zfs_error(hdl, EZFS_BADPROP, 1283 errbuf); 1284 goto error; 1285 } 1286 break; 1287 } 1288 } 1289 } 1290 1291 /* 1292 * If normalization was chosen, but no UTF8 choice was made, 1293 * enforce rejection of non-UTF8 names. 1294 * 1295 * If normalization was chosen, but rejecting non-UTF8 names 1296 * was explicitly not chosen, it is an error. 1297 */ 1298 if (chosen_normal > 0 && chosen_utf < 0) { 1299 if (nvlist_add_uint64(ret, 1300 zfs_prop_to_name(ZFS_PROP_UTF8ONLY), 1) != 0) { 1301 (void) no_memory(hdl); 1302 goto error; 1303 } 1304 } else if (chosen_normal > 0 && chosen_utf == 0) { 1305 zfs_error_aux(hdl, dgettext(TEXT_DOMAIN, 1306 "'%s' must be set 'on' if normalization chosen"), 1307 zfs_prop_to_name(ZFS_PROP_UTF8ONLY)); 1308 (void) zfs_error(hdl, EZFS_BADPROP, errbuf); 1309 goto error; 1310 } 1311 return (ret); 1312 1313error: 1314 nvlist_free(ret); 1315 return (NULL); 1316} 1317 1318int 1319zfs_add_synthetic_resv(zfs_handle_t *zhp, nvlist_t *nvl) 1320{ 1321 uint64_t old_volsize; 1322 uint64_t new_volsize; 1323 uint64_t old_reservation; 1324 uint64_t new_reservation; 1325 zfs_prop_t resv_prop; 1326 1327 /* 1328 * If this is an existing volume, and someone is setting the volsize, 1329 * make sure that it matches the reservation, or add it if necessary. 1330 */ 1331 old_volsize = zfs_prop_get_int(zhp, ZFS_PROP_VOLSIZE); 1332 if (zfs_which_resv_prop(zhp, &resv_prop) < 0) 1333 return (-1); 1334 old_reservation = zfs_prop_get_int(zhp, resv_prop); 1335 if ((zvol_volsize_to_reservation(old_volsize, zhp->zfs_props) != 1336 old_reservation) || nvlist_lookup_uint64(nvl, 1337 zfs_prop_to_name(resv_prop), &new_reservation) != ENOENT) { 1338 return (0); 1339 } 1340 if (nvlist_lookup_uint64(nvl, zfs_prop_to_name(ZFS_PROP_VOLSIZE), 1341 &new_volsize) != 0) 1342 return (-1); 1343 new_reservation = zvol_volsize_to_reservation(new_volsize, 1344 zhp->zfs_props); 1345 if (nvlist_add_uint64(nvl, zfs_prop_to_name(resv_prop), 1346 new_reservation) != 0) { 1347 (void) no_memory(zhp->zfs_hdl); 1348 return (-1); 1349 } 1350 return (1); 1351} 1352 1353void 1354zfs_setprop_error(libzfs_handle_t *hdl, zfs_prop_t prop, int err, 1355 char *errbuf) 1356{ 1357 switch (err) { 1358 1359 case ENOSPC: 1360 /* 1361 * For quotas and reservations, ENOSPC indicates 1362 * something different; setting a quota or reservation 1363 * doesn't use any disk space. 1364 */ 1365 switch (prop) { 1366 case ZFS_PROP_QUOTA: 1367 case ZFS_PROP_REFQUOTA: 1368 zfs_error_aux(hdl, dgettext(TEXT_DOMAIN, 1369 "size is less than current used or " 1370 "reserved space")); 1371 (void) zfs_error(hdl, EZFS_PROPSPACE, errbuf); 1372 break; 1373 1374 case ZFS_PROP_RESERVATION: 1375 case ZFS_PROP_REFRESERVATION: 1376 zfs_error_aux(hdl, dgettext(TEXT_DOMAIN, 1377 "size is greater than available space")); 1378 (void) zfs_error(hdl, EZFS_PROPSPACE, errbuf); 1379 break; 1380 1381 default: 1382 (void) zfs_standard_error(hdl, err, errbuf); 1383 break; 1384 } 1385 break; 1386 1387 case EBUSY: 1388 (void) zfs_standard_error(hdl, EBUSY, errbuf); 1389 break; 1390 1391 case EROFS: 1392 (void) zfs_error(hdl, EZFS_DSREADONLY, errbuf); 1393 break; 1394 1395 case ENOTSUP: 1396 zfs_error_aux(hdl, dgettext(TEXT_DOMAIN, 1397 "pool and or dataset must be upgraded to set this " 1398 "property or value")); 1399 (void) zfs_error(hdl, EZFS_BADVERSION, errbuf); 1400 break; 1401 1402 case ERANGE: 1403 if (prop == ZFS_PROP_COMPRESSION) { 1404 (void) zfs_error_aux(hdl, dgettext(TEXT_DOMAIN, 1405 "property setting is not allowed on " 1406 "bootable datasets")); 1407 (void) zfs_error(hdl, EZFS_NOTSUP, errbuf); 1408 } else { 1409 (void) zfs_standard_error(hdl, err, errbuf); 1410 } 1411 break; 1412 1413 case EINVAL: 1414 if (prop == ZPROP_INVAL) { 1415 (void) zfs_error(hdl, EZFS_BADPROP, errbuf); 1416 } else { 1417 (void) zfs_standard_error(hdl, err, errbuf); 1418 } 1419 break; 1420 1421 case EOVERFLOW: 1422 /* 1423 * This platform can't address a volume this big. 1424 */ 1425#ifdef _ILP32 1426 if (prop == ZFS_PROP_VOLSIZE) { 1427 (void) zfs_error(hdl, EZFS_VOLTOOBIG, errbuf); 1428 break; 1429 } 1430#endif 1431 /* FALLTHROUGH */ 1432 default: 1433 (void) zfs_standard_error(hdl, err, errbuf); 1434 } 1435} 1436 1437/* 1438 * Given a property name and value, set the property for the given dataset. 1439 */ 1440int 1441zfs_prop_set(zfs_handle_t *zhp, const char *propname, const char *propval) 1442{ 1443 zfs_cmd_t zc = { 0 }; 1444 int ret = -1; 1445 prop_changelist_t *cl = NULL; 1446 char errbuf[1024]; 1447 libzfs_handle_t *hdl = zhp->zfs_hdl; 1448 nvlist_t *nvl = NULL, *realprops; 1449 zfs_prop_t prop; 1450 boolean_t do_prefix = B_TRUE; 1451 int added_resv; 1452 1453 (void) snprintf(errbuf, sizeof (errbuf), 1454 dgettext(TEXT_DOMAIN, "cannot set property for '%s'"), 1455 zhp->zfs_name); 1456 1457 if (nvlist_alloc(&nvl, NV_UNIQUE_NAME, 0) != 0 || 1458 nvlist_add_string(nvl, propname, propval) != 0) { 1459 (void) no_memory(hdl); 1460 goto error; 1461 } 1462 1463 if ((realprops = zfs_valid_proplist(hdl, zhp->zfs_type, nvl, 1464 zfs_prop_get_int(zhp, ZFS_PROP_ZONED), zhp, errbuf)) == NULL) 1465 goto error; 1466 1467 nvlist_free(nvl); 1468 nvl = realprops; 1469 1470 prop = zfs_name_to_prop(propname); 1471 1472 /* We don't support those properties on FreeBSD. */ 1473 switch (prop) { 1474 case ZFS_PROP_DEVICES: 1475 case ZFS_PROP_ISCSIOPTIONS: 1476 case ZFS_PROP_XATTR: 1477 case ZFS_PROP_VSCAN: 1478 case ZFS_PROP_NBMAND: 1479 case ZFS_PROP_MLSLABEL: 1480 (void) snprintf(errbuf, sizeof (errbuf), 1481 "property '%s' not supported on FreeBSD", propname); 1482 ret = zfs_error(hdl, EZFS_PERM, errbuf); 1483 goto error; 1484 } 1485 1486 if (prop == ZFS_PROP_VOLSIZE) { 1487 if ((added_resv = zfs_add_synthetic_resv(zhp, nvl)) == -1) 1488 goto error; 1489 } 1490 1491 if ((cl = changelist_gather(zhp, prop, 0, 0)) == NULL) 1492 goto error; 1493 1494 if (prop == ZFS_PROP_MOUNTPOINT && changelist_haszonedchild(cl)) { 1495 zfs_error_aux(hdl, dgettext(TEXT_DOMAIN, 1496 "child dataset with inherited mountpoint is used " 1497 "in a non-global zone")); 1498 ret = zfs_error(hdl, EZFS_ZONED, errbuf); 1499 goto error; 1500 } 1501 1502 /* 1503 * We don't want to unmount & remount the dataset when changing 1504 * its canmount property to 'on' or 'noauto'. We only use 1505 * the changelist logic to unmount when setting canmount=off. 1506 */ 1507 if (prop == ZFS_PROP_CANMOUNT) { 1508 uint64_t idx; 1509 int err = zprop_string_to_index(prop, propval, &idx, 1510 ZFS_TYPE_DATASET); 1511 if (err == 0 && idx != ZFS_CANMOUNT_OFF) 1512 do_prefix = B_FALSE; 1513 } 1514 1515 if (do_prefix && (ret = changelist_prefix(cl)) != 0) 1516 goto error; 1517 1518 /* 1519 * Execute the corresponding ioctl() to set this property. 1520 */ 1521 (void) strlcpy(zc.zc_name, zhp->zfs_name, sizeof (zc.zc_name)); 1522 1523 if (zcmd_write_src_nvlist(hdl, &zc, nvl) != 0) 1524 goto error; 1525 1526 ret = zfs_ioctl(hdl, ZFS_IOC_SET_PROP, &zc); 1527 1528 if (ret != 0) { 1529 zfs_setprop_error(hdl, prop, errno, errbuf); 1530 if (added_resv && errno == ENOSPC) { 1531 /* clean up the volsize property we tried to set */ 1532 uint64_t old_volsize = zfs_prop_get_int(zhp, 1533 ZFS_PROP_VOLSIZE); 1534 nvlist_free(nvl); 1535 zcmd_free_nvlists(&zc); 1536 if (nvlist_alloc(&nvl, NV_UNIQUE_NAME, 0) != 0) 1537 goto error; 1538 if (nvlist_add_uint64(nvl, 1539 zfs_prop_to_name(ZFS_PROP_VOLSIZE), 1540 old_volsize) != 0) 1541 goto error; 1542 if (zcmd_write_src_nvlist(hdl, &zc, nvl) != 0) 1543 goto error; 1544 (void) zfs_ioctl(hdl, ZFS_IOC_SET_PROP, &zc); 1545 } 1546 } else { 1547 if (do_prefix) 1548 ret = changelist_postfix(cl); 1549 1550 /* 1551 * Refresh the statistics so the new property value 1552 * is reflected. 1553 */ 1554 if (ret == 0) 1555 (void) get_stats(zhp); 1556 } 1557 1558error: 1559 nvlist_free(nvl); 1560 zcmd_free_nvlists(&zc); 1561 if (cl) 1562 changelist_free(cl); 1563 return (ret); 1564} 1565 1566/* 1567 * Given a property, inherit the value from the parent dataset, or if received 1568 * is TRUE, revert to the received value, if any. 1569 */ 1570int 1571zfs_prop_inherit(zfs_handle_t *zhp, const char *propname, boolean_t received) 1572{ 1573 zfs_cmd_t zc = { 0 }; 1574 int ret; 1575 prop_changelist_t *cl; 1576 libzfs_handle_t *hdl = zhp->zfs_hdl; 1577 char errbuf[1024]; 1578 zfs_prop_t prop; 1579 1580 (void) snprintf(errbuf, sizeof (errbuf), dgettext(TEXT_DOMAIN, 1581 "cannot inherit %s for '%s'"), propname, zhp->zfs_name); 1582 1583 zc.zc_cookie = received; 1584 if ((prop = zfs_name_to_prop(propname)) == ZPROP_INVAL) { 1585 /* 1586 * For user properties, the amount of work we have to do is very 1587 * small, so just do it here. 1588 */ 1589 if (!zfs_prop_user(propname)) { 1590 zfs_error_aux(hdl, dgettext(TEXT_DOMAIN, 1591 "invalid property")); 1592 return (zfs_error(hdl, EZFS_BADPROP, errbuf)); 1593 } 1594 1595 (void) strlcpy(zc.zc_name, zhp->zfs_name, sizeof (zc.zc_name)); 1596 (void) strlcpy(zc.zc_value, propname, sizeof (zc.zc_value)); 1597 1598 if (zfs_ioctl(zhp->zfs_hdl, ZFS_IOC_INHERIT_PROP, &zc) != 0) 1599 return (zfs_standard_error(hdl, errno, errbuf)); 1600 1601 return (0); 1602 } 1603 1604 /* 1605 * Verify that this property is inheritable. 1606 */ 1607 if (zfs_prop_readonly(prop)) 1608 return (zfs_error(hdl, EZFS_PROPREADONLY, errbuf)); 1609 1610 if (!zfs_prop_inheritable(prop) && !received) 1611 return (zfs_error(hdl, EZFS_PROPNONINHERIT, errbuf)); 1612 1613 /* 1614 * Check to see if the value applies to this type 1615 */ 1616 if (!zfs_prop_valid_for_type(prop, zhp->zfs_type)) 1617 return (zfs_error(hdl, EZFS_PROPTYPE, errbuf)); 1618 1619 /* 1620 * Normalize the name, to get rid of shorthand abbreviations. 1621 */ 1622 propname = zfs_prop_to_name(prop); 1623 (void) strlcpy(zc.zc_name, zhp->zfs_name, sizeof (zc.zc_name)); 1624 (void) strlcpy(zc.zc_value, propname, sizeof (zc.zc_value)); 1625 1626 if (prop == ZFS_PROP_MOUNTPOINT && getzoneid() == GLOBAL_ZONEID && 1627 zfs_prop_get_int(zhp, ZFS_PROP_ZONED)) { 1628 zfs_error_aux(hdl, dgettext(TEXT_DOMAIN, 1629 "dataset is used in a non-global zone")); 1630 return (zfs_error(hdl, EZFS_ZONED, errbuf)); 1631 } 1632 1633 /* 1634 * Determine datasets which will be affected by this change, if any. 1635 */ 1636 if ((cl = changelist_gather(zhp, prop, 0, 0)) == NULL) 1637 return (-1); 1638 1639 if (prop == ZFS_PROP_MOUNTPOINT && changelist_haszonedchild(cl)) { 1640 zfs_error_aux(hdl, dgettext(TEXT_DOMAIN, 1641 "child dataset with inherited mountpoint is used " 1642 "in a non-global zone")); 1643 ret = zfs_error(hdl, EZFS_ZONED, errbuf); 1644 goto error; 1645 } 1646 1647 if ((ret = changelist_prefix(cl)) != 0) 1648 goto error; 1649 1650 if ((ret = zfs_ioctl(zhp->zfs_hdl, ZFS_IOC_INHERIT_PROP, &zc)) != 0) { 1651 return (zfs_standard_error(hdl, errno, errbuf)); 1652 } else { 1653 1654 if ((ret = changelist_postfix(cl)) != 0) 1655 goto error; 1656 1657 /* 1658 * Refresh the statistics so the new property is reflected. 1659 */ 1660 (void) get_stats(zhp); 1661 } 1662 1663error: 1664 changelist_free(cl); 1665 return (ret); 1666} 1667 1668/* 1669 * True DSL properties are stored in an nvlist. The following two functions 1670 * extract them appropriately. 1671 */ 1672static uint64_t 1673getprop_uint64(zfs_handle_t *zhp, zfs_prop_t prop, char **source) 1674{ 1675 nvlist_t *nv; 1676 uint64_t value; 1677 1678 *source = NULL; 1679 if (nvlist_lookup_nvlist(zhp->zfs_props, 1680 zfs_prop_to_name(prop), &nv) == 0) { 1681 verify(nvlist_lookup_uint64(nv, ZPROP_VALUE, &value) == 0); 1682 (void) nvlist_lookup_string(nv, ZPROP_SOURCE, source); 1683 } else { 1684 verify(!zhp->zfs_props_table || 1685 zhp->zfs_props_table[prop] == B_TRUE); 1686 value = zfs_prop_default_numeric(prop); 1687 *source = ""; 1688 } 1689 1690 return (value); 1691} 1692 1693static char * 1694getprop_string(zfs_handle_t *zhp, zfs_prop_t prop, char **source) 1695{ 1696 nvlist_t *nv; 1697 char *value; 1698 1699 *source = NULL; 1700 if (nvlist_lookup_nvlist(zhp->zfs_props, 1701 zfs_prop_to_name(prop), &nv) == 0) { 1702 verify(nvlist_lookup_string(nv, ZPROP_VALUE, &value) == 0); 1703 (void) nvlist_lookup_string(nv, ZPROP_SOURCE, source); 1704 } else { 1705 verify(!zhp->zfs_props_table || 1706 zhp->zfs_props_table[prop] == B_TRUE); 1707 if ((value = (char *)zfs_prop_default_string(prop)) == NULL) 1708 value = ""; 1709 *source = ""; 1710 } 1711 1712 return (value); 1713} 1714 1715static boolean_t 1716zfs_is_recvd_props_mode(zfs_handle_t *zhp) 1717{ 1718 return (zhp->zfs_props == zhp->zfs_recvd_props); 1719} 1720 1721static void 1722zfs_set_recvd_props_mode(zfs_handle_t *zhp, uint64_t *cookie) 1723{ 1724 *cookie = (uint64_t)(uintptr_t)zhp->zfs_props; 1725 zhp->zfs_props = zhp->zfs_recvd_props; 1726} 1727 1728static void 1729zfs_unset_recvd_props_mode(zfs_handle_t *zhp, uint64_t *cookie) 1730{ 1731 zhp->zfs_props = (nvlist_t *)(uintptr_t)*cookie; 1732 *cookie = 0; 1733} 1734 1735/* 1736 * Internal function for getting a numeric property. Both zfs_prop_get() and 1737 * zfs_prop_get_int() are built using this interface. 1738 * 1739 * Certain properties can be overridden using 'mount -o'. In this case, scan 1740 * the contents of the /etc/mnttab entry, searching for the appropriate options. 1741 * If they differ from the on-disk values, report the current values and mark 1742 * the source "temporary". 1743 */ 1744static int 1745get_numeric_property(zfs_handle_t *zhp, zfs_prop_t prop, zprop_source_t *src, 1746 char **source, uint64_t *val) 1747{ 1748 zfs_cmd_t zc = { 0 }; 1749 nvlist_t *zplprops = NULL; 1750 struct mnttab mnt; 1751 char *mntopt_on = NULL; 1752 char *mntopt_off = NULL; 1753 boolean_t received = zfs_is_recvd_props_mode(zhp); 1754 1755 *source = NULL; 1756 1757 switch (prop) { 1758 case ZFS_PROP_ATIME: 1759 mntopt_on = MNTOPT_ATIME; 1760 mntopt_off = MNTOPT_NOATIME; 1761 break; 1762 1763 case ZFS_PROP_DEVICES: 1764 mntopt_on = MNTOPT_DEVICES; 1765 mntopt_off = MNTOPT_NODEVICES; 1766 break; 1767 1768 case ZFS_PROP_EXEC: 1769 mntopt_on = MNTOPT_EXEC; 1770 mntopt_off = MNTOPT_NOEXEC; 1771 break; 1772 1773 case ZFS_PROP_READONLY: 1774 mntopt_on = MNTOPT_RO; 1775 mntopt_off = MNTOPT_RW; 1776 break; 1777 1778 case ZFS_PROP_SETUID: 1779 mntopt_on = MNTOPT_SETUID; 1780 mntopt_off = MNTOPT_NOSETUID; 1781 break; 1782 1783 case ZFS_PROP_XATTR: 1784 mntopt_on = MNTOPT_XATTR; 1785 mntopt_off = MNTOPT_NOXATTR; 1786 break; 1787 1788 case ZFS_PROP_NBMAND: 1789 mntopt_on = MNTOPT_NBMAND; 1790 mntopt_off = MNTOPT_NONBMAND; 1791 break; 1792 } 1793 1794 /* 1795 * Because looking up the mount options is potentially expensive 1796 * (iterating over all of /etc/mnttab), we defer its calculation until 1797 * we're looking up a property which requires its presence. 1798 */ 1799 if (!zhp->zfs_mntcheck && 1800 (mntopt_on != NULL || prop == ZFS_PROP_MOUNTED)) { 1801 libzfs_handle_t *hdl = zhp->zfs_hdl; 1802 struct mnttab entry; 1803 1804 if (libzfs_mnttab_find(hdl, zhp->zfs_name, &entry) == 0) { 1805 zhp->zfs_mntopts = zfs_strdup(hdl, 1806 entry.mnt_mntopts); 1807 if (zhp->zfs_mntopts == NULL) 1808 return (-1); 1809 } 1810 1811 zhp->zfs_mntcheck = B_TRUE; 1812 } 1813 1814 if (zhp->zfs_mntopts == NULL) 1815 mnt.mnt_mntopts = ""; 1816 else 1817 mnt.mnt_mntopts = zhp->zfs_mntopts; 1818 1819 switch (prop) { 1820 case ZFS_PROP_ATIME: 1821 case ZFS_PROP_DEVICES: 1822 case ZFS_PROP_EXEC: 1823 case ZFS_PROP_READONLY: 1824 case ZFS_PROP_SETUID: 1825 case ZFS_PROP_XATTR: 1826 case ZFS_PROP_NBMAND: 1827 *val = getprop_uint64(zhp, prop, source); 1828 1829 if (received) 1830 break; 1831 1832 if (hasmntopt(&mnt, mntopt_on) && !*val) { 1833 *val = B_TRUE; 1834 if (src) 1835 *src = ZPROP_SRC_TEMPORARY; 1836 } else if (hasmntopt(&mnt, mntopt_off) && *val) { 1837 *val = B_FALSE; 1838 if (src) 1839 *src = ZPROP_SRC_TEMPORARY; 1840 } 1841 break; 1842 1843 case ZFS_PROP_CANMOUNT: 1844 case ZFS_PROP_VOLSIZE: 1845 case ZFS_PROP_QUOTA: 1846 case ZFS_PROP_REFQUOTA: 1847 case ZFS_PROP_RESERVATION: 1848 case ZFS_PROP_REFRESERVATION: 1849 *val = getprop_uint64(zhp, prop, source); 1850 1851 if (*source == NULL) { 1852 /* not default, must be local */ 1853 *source = zhp->zfs_name; 1854 } 1855 break; 1856 1857 case ZFS_PROP_MOUNTED: 1858 *val = (zhp->zfs_mntopts != NULL); 1859 break; 1860 1861 case ZFS_PROP_NUMCLONES: 1862 *val = zhp->zfs_dmustats.dds_num_clones; 1863 break; 1864 1865 case ZFS_PROP_VERSION: 1866 case ZFS_PROP_NORMALIZE: 1867 case ZFS_PROP_UTF8ONLY: 1868 case ZFS_PROP_CASE: 1869 if (!zfs_prop_valid_for_type(prop, zhp->zfs_head_type) || 1870 zcmd_alloc_dst_nvlist(zhp->zfs_hdl, &zc, 0) != 0) 1871 return (-1); 1872 (void) strlcpy(zc.zc_name, zhp->zfs_name, sizeof (zc.zc_name)); 1873 if (zfs_ioctl(zhp->zfs_hdl, ZFS_IOC_OBJSET_ZPLPROPS, &zc)) { 1874 zcmd_free_nvlists(&zc); 1875 return (-1); 1876 } 1877 if (zcmd_read_dst_nvlist(zhp->zfs_hdl, &zc, &zplprops) != 0 || 1878 nvlist_lookup_uint64(zplprops, zfs_prop_to_name(prop), 1879 val) != 0) { 1880 zcmd_free_nvlists(&zc); 1881 return (-1); 1882 } 1883 if (zplprops) 1884 nvlist_free(zplprops); 1885 zcmd_free_nvlists(&zc); 1886 break; 1887 1888 case ZFS_PROP_INCONSISTENT: 1889 *val = zhp->zfs_dmustats.dds_inconsistent; 1890 break; 1891 1892 default: 1893 switch (zfs_prop_get_type(prop)) { 1894 case PROP_TYPE_NUMBER: 1895 case PROP_TYPE_INDEX: 1896 *val = getprop_uint64(zhp, prop, source); 1897 /* 1898 * If we tried to use a default value for a 1899 * readonly property, it means that it was not 1900 * present. 1901 */ 1902 if (zfs_prop_readonly(prop) && 1903 *source != NULL && (*source)[0] == '\0') { 1904 *source = NULL; 1905 } 1906 break; 1907 1908 case PROP_TYPE_STRING: 1909 default: 1910 zfs_error_aux(zhp->zfs_hdl, dgettext(TEXT_DOMAIN, 1911 "cannot get non-numeric property")); 1912 return (zfs_error(zhp->zfs_hdl, EZFS_BADPROP, 1913 dgettext(TEXT_DOMAIN, "internal error"))); 1914 } 1915 } 1916 1917 return (0); 1918} 1919 1920/* 1921 * Calculate the source type, given the raw source string. 1922 */ 1923static void 1924get_source(zfs_handle_t *zhp, zprop_source_t *srctype, char *source, 1925 char *statbuf, size_t statlen) 1926{ 1927 if (statbuf == NULL || *srctype == ZPROP_SRC_TEMPORARY) 1928 return; 1929 1930 if (source == NULL) { 1931 *srctype = ZPROP_SRC_NONE; 1932 } else if (source[0] == '\0') { 1933 *srctype = ZPROP_SRC_DEFAULT; 1934 } else if (strstr(source, ZPROP_SOURCE_VAL_RECVD) != NULL) { 1935 *srctype = ZPROP_SRC_RECEIVED; 1936 } else { 1937 if (strcmp(source, zhp->zfs_name) == 0) { 1938 *srctype = ZPROP_SRC_LOCAL; 1939 } else { 1940 (void) strlcpy(statbuf, source, statlen); 1941 *srctype = ZPROP_SRC_INHERITED; 1942 } 1943 } 1944 1945} 1946 1947int 1948zfs_prop_get_recvd(zfs_handle_t *zhp, const char *propname, char *propbuf, 1949 size_t proplen, boolean_t literal) 1950{ 1951 zfs_prop_t prop; 1952 int err = 0; 1953 1954 if (zhp->zfs_recvd_props == NULL) 1955 if (get_recvd_props_ioctl(zhp) != 0) 1956 return (-1); 1957 1958 prop = zfs_name_to_prop(propname); 1959 1960 if (prop != ZPROP_INVAL) { 1961 uint64_t cookie; 1962 if (!nvlist_exists(zhp->zfs_recvd_props, propname)) 1963 return (-1); 1964 zfs_set_recvd_props_mode(zhp, &cookie); 1965 err = zfs_prop_get(zhp, prop, propbuf, proplen, 1966 NULL, NULL, 0, literal); 1967 zfs_unset_recvd_props_mode(zhp, &cookie); 1968 } else { 1969 nvlist_t *propval; 1970 char *recvdval; 1971 if (nvlist_lookup_nvlist(zhp->zfs_recvd_props, 1972 propname, &propval) != 0) 1973 return (-1); 1974 verify(nvlist_lookup_string(propval, ZPROP_VALUE, 1975 &recvdval) == 0); 1976 (void) strlcpy(propbuf, recvdval, proplen); 1977 } 1978 1979 return (err == 0 ? 0 : -1); 1980} 1981 1982static int 1983get_clones_string(zfs_handle_t *zhp, char *propbuf, size_t proplen) 1984{ 1985 nvlist_t *value; 1986 nvpair_t *pair; 1987 1988 value = zfs_get_clones_nvl(zhp); 1989 if (value == NULL) 1990 return (-1); 1991 1992 propbuf[0] = '\0'; 1993 for (pair = nvlist_next_nvpair(value, NULL); pair != NULL; 1994 pair = nvlist_next_nvpair(value, pair)) { 1995 if (propbuf[0] != '\0') 1996 (void) strlcat(propbuf, ",", proplen); 1997 (void) strlcat(propbuf, nvpair_name(pair), proplen); 1998 } 1999 2000 return (0); 2001} 2002 2003struct get_clones_arg { 2004 uint64_t numclones; 2005 nvlist_t *value; 2006 const char *origin; 2007 char buf[ZFS_MAXNAMELEN]; 2008}; 2009 2010int 2011get_clones_cb(zfs_handle_t *zhp, void *arg) 2012{ 2013 struct get_clones_arg *gca = arg; 2014 2015 if (gca->numclones == 0) { 2016 zfs_close(zhp); 2017 return (0); 2018 } 2019 2020 if (zfs_prop_get(zhp, ZFS_PROP_ORIGIN, gca->buf, sizeof (gca->buf), 2021 NULL, NULL, 0, B_TRUE) != 0) 2022 goto out; 2023 if (strcmp(gca->buf, gca->origin) == 0) { 2024 fnvlist_add_boolean(gca->value, zfs_get_name(zhp)); 2025 gca->numclones--; 2026 } 2027 2028out: 2029 (void) zfs_iter_children(zhp, get_clones_cb, gca); 2030 zfs_close(zhp); 2031 return (0); 2032} 2033 2034nvlist_t * 2035zfs_get_clones_nvl(zfs_handle_t *zhp) 2036{ 2037 nvlist_t *nv, *value; 2038 2039 if (nvlist_lookup_nvlist(zhp->zfs_props, 2040 zfs_prop_to_name(ZFS_PROP_CLONES), &nv) != 0) { 2041 struct get_clones_arg gca; 2042 2043 /* 2044 * if this is a snapshot, then the kernel wasn't able 2045 * to get the clones. Do it by slowly iterating. 2046 */ 2047 if (zhp->zfs_type != ZFS_TYPE_SNAPSHOT) 2048 return (NULL); 2049 if (nvlist_alloc(&nv, NV_UNIQUE_NAME, 0) != 0) 2050 return (NULL); 2051 if (nvlist_alloc(&value, NV_UNIQUE_NAME, 0) != 0) { 2052 nvlist_free(nv); 2053 return (NULL); 2054 } 2055 2056 gca.numclones = zfs_prop_get_int(zhp, ZFS_PROP_NUMCLONES); 2057 gca.value = value; 2058 gca.origin = zhp->zfs_name; 2059 2060 if (gca.numclones != 0) { 2061 zfs_handle_t *root; 2062 char pool[ZFS_MAXNAMELEN]; 2063 char *cp = pool; 2064 2065 /* get the pool name */ 2066 (void) strlcpy(pool, zhp->zfs_name, sizeof (pool)); 2067 (void) strsep(&cp, "/@"); 2068 root = zfs_open(zhp->zfs_hdl, pool, 2069 ZFS_TYPE_FILESYSTEM); 2070 2071 (void) get_clones_cb(root, &gca); 2072 } 2073 2074 if (gca.numclones != 0 || 2075 nvlist_add_nvlist(nv, ZPROP_VALUE, value) != 0 || 2076 nvlist_add_nvlist(zhp->zfs_props, 2077 zfs_prop_to_name(ZFS_PROP_CLONES), nv) != 0) { 2078 nvlist_free(nv); 2079 nvlist_free(value); 2080 return (NULL); 2081 } 2082 nvlist_free(nv); 2083 nvlist_free(value); 2084 verify(0 == nvlist_lookup_nvlist(zhp->zfs_props, 2085 zfs_prop_to_name(ZFS_PROP_CLONES), &nv)); 2086 } 2087 2088 verify(nvlist_lookup_nvlist(nv, ZPROP_VALUE, &value) == 0); 2089 2090 return (value); 2091} 2092 2093/* 2094 * Retrieve a property from the given object. If 'literal' is specified, then 2095 * numbers are left as exact values. Otherwise, numbers are converted to a 2096 * human-readable form. 2097 * 2098 * Returns 0 on success, or -1 on error. 2099 */ 2100int 2101zfs_prop_get(zfs_handle_t *zhp, zfs_prop_t prop, char *propbuf, size_t proplen, 2102 zprop_source_t *src, char *statbuf, size_t statlen, boolean_t literal) 2103{ 2104 char *source = NULL; 2105 uint64_t val; 2106 char *str; 2107 const char *strval; 2108 boolean_t received = zfs_is_recvd_props_mode(zhp); 2109 2110 /* 2111 * Check to see if this property applies to our object 2112 */ 2113 if (!zfs_prop_valid_for_type(prop, zhp->zfs_type)) 2114 return (-1); 2115 2116 if (received && zfs_prop_readonly(prop)) 2117 return (-1); 2118 2119 if (src) 2120 *src = ZPROP_SRC_NONE; 2121 2122 switch (prop) { 2123 case ZFS_PROP_CREATION: 2124 /* 2125 * 'creation' is a time_t stored in the statistics. We convert 2126 * this into a string unless 'literal' is specified. 2127 */ 2128 { 2129 val = getprop_uint64(zhp, prop, &source); 2130 time_t time = (time_t)val; 2131 struct tm t; 2132 2133 if (literal || 2134 localtime_r(&time, &t) == NULL || 2135 strftime(propbuf, proplen, "%a %b %e %k:%M %Y", 2136 &t) == 0) 2137 (void) snprintf(propbuf, proplen, "%llu", val); 2138 } 2139 break; 2140 2141 case ZFS_PROP_MOUNTPOINT: 2142 /* 2143 * Getting the precise mountpoint can be tricky. 2144 * 2145 * - for 'none' or 'legacy', return those values. 2146 * - for inherited mountpoints, we want to take everything 2147 * after our ancestor and append it to the inherited value. 2148 * 2149 * If the pool has an alternate root, we want to prepend that 2150 * root to any values we return. 2151 */ 2152 2153 str = getprop_string(zhp, prop, &source); 2154 2155 if (str[0] == '/') { 2156 char buf[MAXPATHLEN]; 2157 char *root = buf; 2158 const char *relpath; 2159 2160 /* 2161 * If we inherit the mountpoint, even from a dataset 2162 * with a received value, the source will be the path of 2163 * the dataset we inherit from. If source is 2164 * ZPROP_SOURCE_VAL_RECVD, the received value is not 2165 * inherited. 2166 */ 2167 if (strcmp(source, ZPROP_SOURCE_VAL_RECVD) == 0) { 2168 relpath = ""; 2169 } else { 2170 relpath = zhp->zfs_name + strlen(source); 2171 if (relpath[0] == '/') 2172 relpath++; 2173 } 2174 2175 if ((zpool_get_prop(zhp->zpool_hdl, 2176 ZPOOL_PROP_ALTROOT, buf, MAXPATHLEN, NULL)) || 2177 (strcmp(root, "-") == 0)) 2178 root[0] = '\0'; 2179 /* 2180 * Special case an alternate root of '/'. This will 2181 * avoid having multiple leading slashes in the 2182 * mountpoint path. 2183 */ 2184 if (strcmp(root, "/") == 0) 2185 root++; 2186 2187 /* 2188 * If the mountpoint is '/' then skip over this 2189 * if we are obtaining either an alternate root or 2190 * an inherited mountpoint. 2191 */ 2192 if (str[1] == '\0' && (root[0] != '\0' || 2193 relpath[0] != '\0')) 2194 str++; 2195 2196 if (relpath[0] == '\0') 2197 (void) snprintf(propbuf, proplen, "%s%s", 2198 root, str); 2199 else 2200 (void) snprintf(propbuf, proplen, "%s%s%s%s", 2201 root, str, relpath[0] == '@' ? "" : "/", 2202 relpath); 2203 } else { 2204 /* 'legacy' or 'none' */ 2205 (void) strlcpy(propbuf, str, proplen); 2206 } 2207 2208 break; 2209 2210 case ZFS_PROP_ORIGIN: 2211 (void) strlcpy(propbuf, getprop_string(zhp, prop, &source), 2212 proplen); 2213 /* 2214 * If there is no parent at all, return failure to indicate that 2215 * it doesn't apply to this dataset. 2216 */ 2217 if (propbuf[0] == '\0') 2218 return (-1); 2219 break; 2220 2221 case ZFS_PROP_CLONES: 2222 if (get_clones_string(zhp, propbuf, proplen) != 0) 2223 return (-1); 2224 break; 2225 2226 case ZFS_PROP_QUOTA: 2227 case ZFS_PROP_REFQUOTA: 2228 case ZFS_PROP_RESERVATION: 2229 case ZFS_PROP_REFRESERVATION: 2230 2231 if (get_numeric_property(zhp, prop, src, &source, &val) != 0) 2232 return (-1); 2233 2234 /* 2235 * If quota or reservation is 0, we translate this into 'none' 2236 * (unless literal is set), and indicate that it's the default 2237 * value. Otherwise, we print the number nicely and indicate 2238 * that its set locally. 2239 */ 2240 if (val == 0) { 2241 if (literal) 2242 (void) strlcpy(propbuf, "0", proplen); 2243 else 2244 (void) strlcpy(propbuf, "none", proplen); 2245 } else { 2246 if (literal) 2247 (void) snprintf(propbuf, proplen, "%llu", 2248 (u_longlong_t)val); 2249 else 2250 zfs_nicenum(val, propbuf, proplen); 2251 } 2252 break; 2253 2254 case ZFS_PROP_REFRATIO: 2255 case ZFS_PROP_COMPRESSRATIO: 2256 if (get_numeric_property(zhp, prop, src, &source, &val) != 0) 2257 return (-1); 2258 (void) snprintf(propbuf, proplen, "%llu.%02llux", 2259 (u_longlong_t)(val / 100), 2260 (u_longlong_t)(val % 100)); 2261 break; 2262 2263 case ZFS_PROP_TYPE: 2264 switch (zhp->zfs_type) { 2265 case ZFS_TYPE_FILESYSTEM: 2266 str = "filesystem"; 2267 break; 2268 case ZFS_TYPE_VOLUME: 2269 str = "volume"; 2270 break; 2271 case ZFS_TYPE_SNAPSHOT: 2272 str = "snapshot"; 2273 break; 2274 default: 2275 abort(); 2276 } 2277 (void) snprintf(propbuf, proplen, "%s", str); 2278 break; 2279 2280 case ZFS_PROP_MOUNTED: 2281 /* 2282 * The 'mounted' property is a pseudo-property that described 2283 * whether the filesystem is currently mounted. Even though 2284 * it's a boolean value, the typical values of "on" and "off" 2285 * don't make sense, so we translate to "yes" and "no". 2286 */ 2287 if (get_numeric_property(zhp, ZFS_PROP_MOUNTED, 2288 src, &source, &val) != 0) 2289 return (-1); 2290 if (val) 2291 (void) strlcpy(propbuf, "yes", proplen); 2292 else 2293 (void) strlcpy(propbuf, "no", proplen); 2294 break; 2295 2296 case ZFS_PROP_NAME: 2297 /* 2298 * The 'name' property is a pseudo-property derived from the 2299 * dataset name. It is presented as a real property to simplify 2300 * consumers. 2301 */ 2302 (void) strlcpy(propbuf, zhp->zfs_name, proplen); 2303 break; 2304 2305 case ZFS_PROP_MLSLABEL: 2306 { 2307#ifdef sun 2308 m_label_t *new_sl = NULL; 2309 char *ascii = NULL; /* human readable label */ 2310 2311 (void) strlcpy(propbuf, 2312 getprop_string(zhp, prop, &source), proplen); 2313 2314 if (literal || (strcasecmp(propbuf, 2315 ZFS_MLSLABEL_DEFAULT) == 0)) 2316 break; 2317 2318 /* 2319 * Try to translate the internal hex string to 2320 * human-readable output. If there are any 2321 * problems just use the hex string. 2322 */ 2323 2324 if (str_to_label(propbuf, &new_sl, MAC_LABEL, 2325 L_NO_CORRECTION, NULL) == -1) { 2326 m_label_free(new_sl); 2327 break; 2328 } 2329 2330 if (label_to_str(new_sl, &ascii, M_LABEL, 2331 DEF_NAMES) != 0) { 2332 if (ascii) 2333 free(ascii); 2334 m_label_free(new_sl); 2335 break; 2336 } 2337 m_label_free(new_sl); 2338 2339 (void) strlcpy(propbuf, ascii, proplen); 2340 free(ascii); 2341#else /* !sun */ 2342 propbuf[0] = '\0'; 2343#endif /* !sun */ 2344 } 2345 break; 2346 2347 case ZFS_PROP_GUID: 2348 /* 2349 * GUIDs are stored as numbers, but they are identifiers. 2350 * We don't want them to be pretty printed, because pretty 2351 * printing mangles the ID into a truncated and useless value. 2352 */ 2353 if (get_numeric_property(zhp, prop, src, &source, &val) != 0) 2354 return (-1); 2355 (void) snprintf(propbuf, proplen, "%llu", (u_longlong_t)val); 2356 break; 2357 2358 default: 2359 switch (zfs_prop_get_type(prop)) { 2360 case PROP_TYPE_NUMBER: 2361 if (get_numeric_property(zhp, prop, src, 2362 &source, &val) != 0) 2363 return (-1); 2364 if (literal) 2365 (void) snprintf(propbuf, proplen, "%llu", 2366 (u_longlong_t)val); 2367 else 2368 zfs_nicenum(val, propbuf, proplen); 2369 break; 2370 2371 case PROP_TYPE_STRING: 2372 (void) strlcpy(propbuf, 2373 getprop_string(zhp, prop, &source), proplen); 2374 break; 2375 2376 case PROP_TYPE_INDEX: 2377 if (get_numeric_property(zhp, prop, src, 2378 &source, &val) != 0) 2379 return (-1); 2380 if (zfs_prop_index_to_string(prop, val, &strval) != 0) 2381 return (-1); 2382 (void) strlcpy(propbuf, strval, proplen); 2383 break; 2384 2385 default: 2386 abort(); 2387 } 2388 } 2389 2390 get_source(zhp, src, source, statbuf, statlen); 2391 2392 return (0); 2393} 2394 2395/* 2396 * Utility function to get the given numeric property. Does no validation that 2397 * the given property is the appropriate type; should only be used with 2398 * hard-coded property types. 2399 */ 2400uint64_t 2401zfs_prop_get_int(zfs_handle_t *zhp, zfs_prop_t prop) 2402{ 2403 char *source; 2404 uint64_t val; 2405 2406 (void) get_numeric_property(zhp, prop, NULL, &source, &val); 2407 2408 return (val); 2409} 2410 2411int 2412zfs_prop_set_int(zfs_handle_t *zhp, zfs_prop_t prop, uint64_t val) 2413{ 2414 char buf[64]; 2415 2416 (void) snprintf(buf, sizeof (buf), "%llu", (longlong_t)val); 2417 return (zfs_prop_set(zhp, zfs_prop_to_name(prop), buf)); 2418} 2419 2420/* 2421 * Similar to zfs_prop_get(), but returns the value as an integer. 2422 */ 2423int 2424zfs_prop_get_numeric(zfs_handle_t *zhp, zfs_prop_t prop, uint64_t *value, 2425 zprop_source_t *src, char *statbuf, size_t statlen) 2426{ 2427 char *source; 2428 2429 /* 2430 * Check to see if this property applies to our object 2431 */ 2432 if (!zfs_prop_valid_for_type(prop, zhp->zfs_type)) { 2433 return (zfs_error_fmt(zhp->zfs_hdl, EZFS_PROPTYPE, 2434 dgettext(TEXT_DOMAIN, "cannot get property '%s'"), 2435 zfs_prop_to_name(prop))); 2436 } 2437 2438 if (src) 2439 *src = ZPROP_SRC_NONE; 2440 2441 if (get_numeric_property(zhp, prop, src, &source, value) != 0) 2442 return (-1); 2443 2444 get_source(zhp, src, source, statbuf, statlen); 2445 2446 return (0); 2447} 2448 2449static int 2450idmap_id_to_numeric_domain_rid(uid_t id, boolean_t isuser, 2451 char **domainp, idmap_rid_t *ridp) 2452{ 2453#ifdef sun 2454 idmap_get_handle_t *get_hdl = NULL; 2455 idmap_stat status; 2456 int err = EINVAL; 2457 2458 if (idmap_get_create(&get_hdl) != IDMAP_SUCCESS) 2459 goto out; 2460 2461 if (isuser) { 2462 err = idmap_get_sidbyuid(get_hdl, id, 2463 IDMAP_REQ_FLG_USE_CACHE, domainp, ridp, &status); 2464 } else { 2465 err = idmap_get_sidbygid(get_hdl, id, 2466 IDMAP_REQ_FLG_USE_CACHE, domainp, ridp, &status); 2467 } 2468 if (err == IDMAP_SUCCESS && 2469 idmap_get_mappings(get_hdl) == IDMAP_SUCCESS && 2470 status == IDMAP_SUCCESS) 2471 err = 0; 2472 else 2473 err = EINVAL; 2474out: 2475 if (get_hdl) 2476 idmap_get_destroy(get_hdl); 2477 return (err); 2478#else /* !sun */ 2479 assert(!"invalid code path"); 2480#endif /* !sun */ 2481} 2482 2483/* 2484 * convert the propname into parameters needed by kernel 2485 * Eg: userquota@ahrens -> ZFS_PROP_USERQUOTA, "", 126829 2486 * Eg: userused@matt@domain -> ZFS_PROP_USERUSED, "S-1-123-456", 789 2487 */ 2488static int 2489userquota_propname_decode(const char *propname, boolean_t zoned, 2490 zfs_userquota_prop_t *typep, char *domain, int domainlen, uint64_t *ridp) 2491{ 2492 zfs_userquota_prop_t type; 2493 char *cp, *end; 2494 char *numericsid = NULL; 2495 boolean_t isuser; 2496 2497 domain[0] = '\0'; 2498 2499 /* Figure out the property type ({user|group}{quota|space}) */ 2500 for (type = 0; type < ZFS_NUM_USERQUOTA_PROPS; type++) { 2501 if (strncmp(propname, zfs_userquota_prop_prefixes[type], 2502 strlen(zfs_userquota_prop_prefixes[type])) == 0) 2503 break; 2504 } 2505 if (type == ZFS_NUM_USERQUOTA_PROPS) 2506 return (EINVAL); 2507 *typep = type; 2508 2509 isuser = (type == ZFS_PROP_USERQUOTA || 2510 type == ZFS_PROP_USERUSED); 2511 2512 cp = strchr(propname, '@') + 1; 2513 2514 if (strchr(cp, '@')) { 2515#ifdef sun 2516 /* 2517 * It's a SID name (eg "user@domain") that needs to be 2518 * turned into S-1-domainID-RID. 2519 */ 2520 directory_error_t e; 2521 if (zoned && getzoneid() == GLOBAL_ZONEID) 2522 return (ENOENT); 2523 if (isuser) { 2524 e = directory_sid_from_user_name(NULL, 2525 cp, &numericsid); 2526 } else { 2527 e = directory_sid_from_group_name(NULL, 2528 cp, &numericsid); 2529 } 2530 if (e != NULL) { 2531 directory_error_free(e); 2532 return (ENOENT); 2533 } 2534 if (numericsid == NULL) 2535 return (ENOENT); 2536 cp = numericsid; 2537 /* will be further decoded below */ 2538#else /* !sun */ 2539 return (ENOENT); 2540#endif /* !sun */ 2541 } 2542 2543 if (strncmp(cp, "S-1-", 4) == 0) { 2544 /* It's a numeric SID (eg "S-1-234-567-89") */ 2545 (void) strlcpy(domain, cp, domainlen); 2546 cp = strrchr(domain, '-'); 2547 *cp = '\0'; 2548 cp++; 2549 2550 errno = 0; 2551 *ridp = strtoull(cp, &end, 10); 2552 if (numericsid) { 2553 free(numericsid); 2554 numericsid = NULL; 2555 } 2556 if (errno != 0 || *end != '\0') 2557 return (EINVAL); 2558 } else if (!isdigit(*cp)) { 2559 /* 2560 * It's a user/group name (eg "user") that needs to be 2561 * turned into a uid/gid 2562 */ 2563 if (zoned && getzoneid() == GLOBAL_ZONEID) 2564 return (ENOENT); 2565 if (isuser) { 2566 struct passwd *pw; 2567 pw = getpwnam(cp); 2568 if (pw == NULL) 2569 return (ENOENT); 2570 *ridp = pw->pw_uid; 2571 } else { 2572 struct group *gr; 2573 gr = getgrnam(cp); 2574 if (gr == NULL) 2575 return (ENOENT); 2576 *ridp = gr->gr_gid; 2577 } 2578 } else { 2579 /* It's a user/group ID (eg "12345"). */ 2580 uid_t id = strtoul(cp, &end, 10); 2581 idmap_rid_t rid; 2582 char *mapdomain; 2583 2584 if (*end != '\0') 2585 return (EINVAL); 2586 if (id > MAXUID) { 2587 /* It's an ephemeral ID. */ 2588 if (idmap_id_to_numeric_domain_rid(id, isuser, 2589 &mapdomain, &rid) != 0) 2590 return (ENOENT); 2591 (void) strlcpy(domain, mapdomain, domainlen); 2592 *ridp = rid; 2593 } else { 2594 *ridp = id; 2595 } 2596 } 2597 2598 ASSERT3P(numericsid, ==, NULL); 2599 return (0); 2600} 2601 2602static int 2603zfs_prop_get_userquota_common(zfs_handle_t *zhp, const char *propname, 2604 uint64_t *propvalue, zfs_userquota_prop_t *typep) 2605{ 2606 int err; 2607 zfs_cmd_t zc = { 0 }; 2608 2609 (void) strlcpy(zc.zc_name, zhp->zfs_name, sizeof (zc.zc_name)); 2610 2611 err = userquota_propname_decode(propname, 2612 zfs_prop_get_int(zhp, ZFS_PROP_ZONED), 2613 typep, zc.zc_value, sizeof (zc.zc_value), &zc.zc_guid); 2614 zc.zc_objset_type = *typep; 2615 if (err) 2616 return (err); 2617 2618 err = ioctl(zhp->zfs_hdl->libzfs_fd, ZFS_IOC_USERSPACE_ONE, &zc); 2619 if (err) 2620 return (err); 2621 2622 *propvalue = zc.zc_cookie; 2623 return (0); 2624} 2625 2626int 2627zfs_prop_get_userquota_int(zfs_handle_t *zhp, const char *propname, 2628 uint64_t *propvalue) 2629{ 2630 zfs_userquota_prop_t type; 2631 2632 return (zfs_prop_get_userquota_common(zhp, propname, propvalue, 2633 &type)); 2634} 2635 2636int 2637zfs_prop_get_userquota(zfs_handle_t *zhp, const char *propname, 2638 char *propbuf, int proplen, boolean_t literal) 2639{ 2640 int err; 2641 uint64_t propvalue; 2642 zfs_userquota_prop_t type; 2643 2644 err = zfs_prop_get_userquota_common(zhp, propname, &propvalue, 2645 &type); 2646 2647 if (err) 2648 return (err); 2649 2650 if (literal) { 2651 (void) snprintf(propbuf, proplen, "%llu", propvalue); 2652 } else if (propvalue == 0 && 2653 (type == ZFS_PROP_USERQUOTA || type == ZFS_PROP_GROUPQUOTA)) { 2654 (void) strlcpy(propbuf, "none", proplen); 2655 } else { 2656 zfs_nicenum(propvalue, propbuf, proplen); 2657 } 2658 return (0); 2659} 2660 2661int 2662zfs_prop_get_written_int(zfs_handle_t *zhp, const char *propname, 2663 uint64_t *propvalue) 2664{ 2665 int err; 2666 zfs_cmd_t zc = { 0 }; 2667 const char *snapname; 2668 2669 (void) strlcpy(zc.zc_name, zhp->zfs_name, sizeof (zc.zc_name)); 2670 2671 snapname = strchr(propname, '@') + 1; 2672 if (strchr(snapname, '@')) { 2673 (void) strlcpy(zc.zc_value, snapname, sizeof (zc.zc_value)); 2674 } else { 2675 /* snapname is the short name, append it to zhp's fsname */ 2676 char *cp; 2677 2678 (void) strlcpy(zc.zc_value, zhp->zfs_name, 2679 sizeof (zc.zc_value)); 2680 cp = strchr(zc.zc_value, '@'); 2681 if (cp != NULL) 2682 *cp = '\0'; 2683 (void) strlcat(zc.zc_value, "@", sizeof (zc.zc_value)); 2684 (void) strlcat(zc.zc_value, snapname, sizeof (zc.zc_value)); 2685 } 2686 2687 err = ioctl(zhp->zfs_hdl->libzfs_fd, ZFS_IOC_SPACE_WRITTEN, &zc); 2688 if (err) 2689 return (err); 2690 2691 *propvalue = zc.zc_cookie; 2692 return (0); 2693} 2694 2695int 2696zfs_prop_get_written(zfs_handle_t *zhp, const char *propname, 2697 char *propbuf, int proplen, boolean_t literal) 2698{ 2699 int err; 2700 uint64_t propvalue; 2701 2702 err = zfs_prop_get_written_int(zhp, propname, &propvalue); 2703 2704 if (err) 2705 return (err); 2706 2707 if (literal) { 2708 (void) snprintf(propbuf, proplen, "%llu", propvalue); 2709 } else { 2710 zfs_nicenum(propvalue, propbuf, proplen); 2711 } 2712 return (0); 2713} 2714 2715/* 2716 * Returns the name of the given zfs handle. 2717 */ 2718const char * 2719zfs_get_name(const zfs_handle_t *zhp) 2720{ 2721 return (zhp->zfs_name); 2722} 2723 2724/* 2725 * Returns the type of the given zfs handle. 2726 */ 2727zfs_type_t 2728zfs_get_type(const zfs_handle_t *zhp) 2729{ 2730 return (zhp->zfs_type); 2731} 2732 2733/* 2734 * Is one dataset name a child dataset of another? 2735 * 2736 * Needs to handle these cases: 2737 * Dataset 1 "a/foo" "a/foo" "a/foo" "a/foo" 2738 * Dataset 2 "a/fo" "a/foobar" "a/bar/baz" "a/foo/bar" 2739 * Descendant? No. No. No. Yes. 2740 */ 2741static boolean_t 2742is_descendant(const char *ds1, const char *ds2) 2743{ 2744 size_t d1len = strlen(ds1); 2745 2746 /* ds2 can't be a descendant if it's smaller */ 2747 if (strlen(ds2) < d1len) 2748 return (B_FALSE); 2749 2750 /* otherwise, compare strings and verify that there's a '/' char */ 2751 return (ds2[d1len] == '/' && (strncmp(ds1, ds2, d1len) == 0)); 2752} 2753 2754/* 2755 * Given a complete name, return just the portion that refers to the parent. 2756 * Will return -1 if there is no parent (path is just the name of the 2757 * pool). 2758 */ 2759static int 2760parent_name(const char *path, char *buf, size_t buflen) 2761{ 2762 char *slashp; 2763 2764 (void) strlcpy(buf, path, buflen); 2765 2766 if ((slashp = strrchr(buf, '/')) == NULL) 2767 return (-1); 2768 *slashp = '\0'; 2769 2770 return (0); 2771} 2772 2773/* 2774 * If accept_ancestor is false, then check to make sure that the given path has 2775 * a parent, and that it exists. If accept_ancestor is true, then find the 2776 * closest existing ancestor for the given path. In prefixlen return the 2777 * length of already existing prefix of the given path. We also fetch the 2778 * 'zoned' property, which is used to validate property settings when creating 2779 * new datasets. 2780 */ 2781static int 2782check_parents(libzfs_handle_t *hdl, const char *path, uint64_t *zoned, 2783 boolean_t accept_ancestor, int *prefixlen) 2784{ 2785 zfs_cmd_t zc = { 0 }; 2786 char parent[ZFS_MAXNAMELEN]; 2787 char *slash; 2788 zfs_handle_t *zhp; 2789 char errbuf[1024]; 2790 uint64_t is_zoned; 2791 2792 (void) snprintf(errbuf, sizeof (errbuf), 2793 dgettext(TEXT_DOMAIN, "cannot create '%s'"), path); 2794 2795 /* get parent, and check to see if this is just a pool */ 2796 if (parent_name(path, parent, sizeof (parent)) != 0) { 2797 zfs_error_aux(hdl, dgettext(TEXT_DOMAIN, 2798 "missing dataset name")); 2799 return (zfs_error(hdl, EZFS_INVALIDNAME, errbuf)); 2800 } 2801 2802 /* check to see if the pool exists */ 2803 if ((slash = strchr(parent, '/')) == NULL) 2804 slash = parent + strlen(parent); 2805 (void) strncpy(zc.zc_name, parent, slash - parent); 2806 zc.zc_name[slash - parent] = '\0'; 2807 if (ioctl(hdl->libzfs_fd, ZFS_IOC_OBJSET_STATS, &zc) != 0 && 2808 errno == ENOENT) { 2809 zfs_error_aux(hdl, dgettext(TEXT_DOMAIN, 2810 "no such pool '%s'"), zc.zc_name); 2811 return (zfs_error(hdl, EZFS_NOENT, errbuf)); 2812 } 2813 2814 /* check to see if the parent dataset exists */ 2815 while ((zhp = make_dataset_handle(hdl, parent)) == NULL) { 2816 if (errno == ENOENT && accept_ancestor) { 2817 /* 2818 * Go deeper to find an ancestor, give up on top level. 2819 */ 2820 if (parent_name(parent, parent, sizeof (parent)) != 0) { 2821 zfs_error_aux(hdl, dgettext(TEXT_DOMAIN, 2822 "no such pool '%s'"), zc.zc_name); 2823 return (zfs_error(hdl, EZFS_NOENT, errbuf)); 2824 } 2825 } else if (errno == ENOENT) { 2826 zfs_error_aux(hdl, dgettext(TEXT_DOMAIN, 2827 "parent does not exist")); 2828 return (zfs_error(hdl, EZFS_NOENT, errbuf)); 2829 } else 2830 return (zfs_standard_error(hdl, errno, errbuf)); 2831 } 2832 2833 is_zoned = zfs_prop_get_int(zhp, ZFS_PROP_ZONED); 2834 if (zoned != NULL) 2835 *zoned = is_zoned; 2836 2837 /* we are in a non-global zone, but parent is in the global zone */ 2838 if (getzoneid() != GLOBAL_ZONEID && !is_zoned) { 2839 (void) zfs_standard_error(hdl, EPERM, errbuf); 2840 zfs_close(zhp); 2841 return (-1); 2842 } 2843 2844 /* make sure parent is a filesystem */ 2845 if (zfs_get_type(zhp) != ZFS_TYPE_FILESYSTEM) { 2846 zfs_error_aux(hdl, dgettext(TEXT_DOMAIN, 2847 "parent is not a filesystem")); 2848 (void) zfs_error(hdl, EZFS_BADTYPE, errbuf); 2849 zfs_close(zhp); 2850 return (-1); 2851 } 2852 2853 zfs_close(zhp); 2854 if (prefixlen != NULL) 2855 *prefixlen = strlen(parent); 2856 return (0); 2857} 2858 2859/* 2860 * Finds whether the dataset of the given type(s) exists. 2861 */ 2862boolean_t 2863zfs_dataset_exists(libzfs_handle_t *hdl, const char *path, zfs_type_t types) 2864{ 2865 zfs_handle_t *zhp; 2866 2867 if (!zfs_validate_name(hdl, path, types, B_FALSE)) 2868 return (B_FALSE); 2869 2870 /* 2871 * Try to get stats for the dataset, which will tell us if it exists. 2872 */ 2873 if ((zhp = make_dataset_handle(hdl, path)) != NULL) { 2874 int ds_type = zhp->zfs_type; 2875 2876 zfs_close(zhp); 2877 if (types & ds_type) 2878 return (B_TRUE); 2879 } 2880 return (B_FALSE); 2881} 2882 2883/* 2884 * Given a path to 'target', create all the ancestors between 2885 * the prefixlen portion of the path, and the target itself. 2886 * Fail if the initial prefixlen-ancestor does not already exist. 2887 */ 2888int 2889create_parents(libzfs_handle_t *hdl, char *target, int prefixlen) 2890{ 2891 zfs_handle_t *h; 2892 char *cp; 2893 const char *opname; 2894 2895 /* make sure prefix exists */ 2896 cp = target + prefixlen; 2897 if (*cp != '/') { 2898 assert(strchr(cp, '/') == NULL); 2899 h = zfs_open(hdl, target, ZFS_TYPE_FILESYSTEM); 2900 } else { 2901 *cp = '\0'; 2902 h = zfs_open(hdl, target, ZFS_TYPE_FILESYSTEM); 2903 *cp = '/'; 2904 } 2905 if (h == NULL) 2906 return (-1); 2907 zfs_close(h); 2908 2909 /* 2910 * Attempt to create, mount, and share any ancestor filesystems, 2911 * up to the prefixlen-long one. 2912 */ 2913 for (cp = target + prefixlen + 1; 2914 cp = strchr(cp, '/'); *cp = '/', cp++) { 2915 2916 *cp = '\0'; 2917 2918 h = make_dataset_handle(hdl, target); 2919 if (h) { 2920 /* it already exists, nothing to do here */ 2921 zfs_close(h); 2922 continue; 2923 } 2924 2925 if (zfs_create(hdl, target, ZFS_TYPE_FILESYSTEM, 2926 NULL) != 0) { 2927 opname = dgettext(TEXT_DOMAIN, "create"); 2928 goto ancestorerr; 2929 } 2930 2931 h = zfs_open(hdl, target, ZFS_TYPE_FILESYSTEM); 2932 if (h == NULL) { 2933 opname = dgettext(TEXT_DOMAIN, "open"); 2934 goto ancestorerr; 2935 } 2936 2937 if (zfs_mount(h, NULL, 0) != 0) { 2938 opname = dgettext(TEXT_DOMAIN, "mount"); 2939 goto ancestorerr; 2940 } 2941 2942 if (zfs_share(h) != 0) { 2943 opname = dgettext(TEXT_DOMAIN, "share"); 2944 goto ancestorerr; 2945 } 2946 2947 zfs_close(h); 2948 } 2949 2950 return (0); 2951 2952ancestorerr: 2953 zfs_error_aux(hdl, dgettext(TEXT_DOMAIN, 2954 "failed to %s ancestor '%s'"), opname, target); 2955 return (-1); 2956} 2957 2958/* 2959 * Creates non-existing ancestors of the given path. 2960 */ 2961int 2962zfs_create_ancestors(libzfs_handle_t *hdl, const char *path) 2963{ 2964 int prefix; 2965 char *path_copy; 2966 int rc; 2967 2968 if (check_parents(hdl, path, NULL, B_TRUE, &prefix) != 0) 2969 return (-1); 2970 2971 if ((path_copy = strdup(path)) != NULL) { 2972 rc = create_parents(hdl, path_copy, prefix); 2973 free(path_copy); 2974 } 2975 if (path_copy == NULL || rc != 0) 2976 return (-1); 2977 2978 return (0); 2979} 2980 2981/* 2982 * Create a new filesystem or volume. 2983 */ 2984int 2985zfs_create(libzfs_handle_t *hdl, const char *path, zfs_type_t type, 2986 nvlist_t *props) 2987{ 2988 int ret; 2989 uint64_t size = 0; 2990 uint64_t blocksize = zfs_prop_default_numeric(ZFS_PROP_VOLBLOCKSIZE); 2991 char errbuf[1024]; 2992 uint64_t zoned; 2993 dmu_objset_type_t ost; 2994 2995 (void) snprintf(errbuf, sizeof (errbuf), dgettext(TEXT_DOMAIN, 2996 "cannot create '%s'"), path); 2997 2998 /* validate the path, taking care to note the extended error message */ 2999 if (!zfs_validate_name(hdl, path, type, B_TRUE)) 3000 return (zfs_error(hdl, EZFS_INVALIDNAME, errbuf)); 3001 3002 /* validate parents exist */ 3003 if (check_parents(hdl, path, &zoned, B_FALSE, NULL) != 0) 3004 return (-1); 3005 3006 /* 3007 * The failure modes when creating a dataset of a different type over 3008 * one that already exists is a little strange. In particular, if you 3009 * try to create a dataset on top of an existing dataset, the ioctl() 3010 * will return ENOENT, not EEXIST. To prevent this from happening, we 3011 * first try to see if the dataset exists. 3012 */ 3013 if (zfs_dataset_exists(hdl, path, ZFS_TYPE_DATASET)) { 3014 zfs_error_aux(hdl, dgettext(TEXT_DOMAIN, 3015 "dataset already exists")); 3016 return (zfs_error(hdl, EZFS_EXISTS, errbuf)); 3017 } 3018 3019 if (type == ZFS_TYPE_VOLUME) 3020 ost = DMU_OST_ZVOL; 3021 else 3022 ost = DMU_OST_ZFS; 3023 3024 if (props && (props = zfs_valid_proplist(hdl, type, props, 3025 zoned, NULL, errbuf)) == 0) 3026 return (-1); 3027 3028 if (type == ZFS_TYPE_VOLUME) { 3029 /* 3030 * If we are creating a volume, the size and block size must 3031 * satisfy a few restraints. First, the blocksize must be a 3032 * valid block size between SPA_{MIN,MAX}BLOCKSIZE. Second, the 3033 * volsize must be a multiple of the block size, and cannot be 3034 * zero. 3035 */ 3036 if (props == NULL || nvlist_lookup_uint64(props, 3037 zfs_prop_to_name(ZFS_PROP_VOLSIZE), &size) != 0) { 3038 nvlist_free(props); 3039 zfs_error_aux(hdl, dgettext(TEXT_DOMAIN, 3040 "missing volume size")); 3041 return (zfs_error(hdl, EZFS_BADPROP, errbuf)); 3042 } 3043 3044 if ((ret = nvlist_lookup_uint64(props, 3045 zfs_prop_to_name(ZFS_PROP_VOLBLOCKSIZE), 3046 &blocksize)) != 0) { 3047 if (ret == ENOENT) { 3048 blocksize = zfs_prop_default_numeric( 3049 ZFS_PROP_VOLBLOCKSIZE); 3050 } else { 3051 nvlist_free(props); 3052 zfs_error_aux(hdl, dgettext(TEXT_DOMAIN, 3053 "missing volume block size")); 3054 return (zfs_error(hdl, EZFS_BADPROP, errbuf)); 3055 } 3056 } 3057 3058 if (size == 0) { 3059 nvlist_free(props); 3060 zfs_error_aux(hdl, dgettext(TEXT_DOMAIN, 3061 "volume size cannot be zero")); 3062 return (zfs_error(hdl, EZFS_BADPROP, errbuf)); 3063 } 3064 3065 if (size % blocksize != 0) { 3066 nvlist_free(props); 3067 zfs_error_aux(hdl, dgettext(TEXT_DOMAIN, 3068 "volume size must be a multiple of volume block " 3069 "size")); 3070 return (zfs_error(hdl, EZFS_BADPROP, errbuf)); 3071 } 3072 } 3073 3074 /* create the dataset */ 3075 ret = lzc_create(path, ost, props); 3076 nvlist_free(props); 3077 3078 /* check for failure */ 3079 if (ret != 0) { 3080 char parent[ZFS_MAXNAMELEN]; 3081 (void) parent_name(path, parent, sizeof (parent)); 3082 3083 switch (errno) { 3084 case ENOENT: 3085 zfs_error_aux(hdl, dgettext(TEXT_DOMAIN, 3086 "no such parent '%s'"), parent); 3087 return (zfs_error(hdl, EZFS_NOENT, errbuf)); 3088 3089 case EINVAL: 3090 zfs_error_aux(hdl, dgettext(TEXT_DOMAIN, 3091 "parent '%s' is not a filesystem"), parent); 3092 return (zfs_error(hdl, EZFS_BADTYPE, errbuf)); 3093 3094 case EDOM: 3095 zfs_error_aux(hdl, dgettext(TEXT_DOMAIN, 3096 "volume block size must be power of 2 from " 3097 "%u to %uk"), 3098 (uint_t)SPA_MINBLOCKSIZE, 3099 (uint_t)SPA_MAXBLOCKSIZE >> 10); 3100 3101 return (zfs_error(hdl, EZFS_BADPROP, errbuf)); 3102 3103 case ENOTSUP: 3104 zfs_error_aux(hdl, dgettext(TEXT_DOMAIN, 3105 "pool must be upgraded to set this " 3106 "property or value")); 3107 return (zfs_error(hdl, EZFS_BADVERSION, errbuf)); 3108#ifdef _ILP32 3109 case EOVERFLOW: 3110 /* 3111 * This platform can't address a volume this big. 3112 */ 3113 if (type == ZFS_TYPE_VOLUME) 3114 return (zfs_error(hdl, EZFS_VOLTOOBIG, 3115 errbuf)); 3116#endif 3117 /* FALLTHROUGH */ 3118 default: 3119 return (zfs_standard_error(hdl, errno, errbuf)); 3120 } 3121 } 3122 3123 return (0); 3124} 3125 3126/* 3127 * Destroys the given dataset. The caller must make sure that the filesystem 3128 * isn't mounted, and that there are no active dependents. If the file system 3129 * does not exist this function does nothing. 3130 */ 3131int 3132zfs_destroy(zfs_handle_t *zhp, boolean_t defer) 3133{ 3134 zfs_cmd_t zc = { 0 }; 3135 3136 (void) strlcpy(zc.zc_name, zhp->zfs_name, sizeof (zc.zc_name)); 3137 3138 if (ZFS_IS_VOLUME(zhp)) { 3139 zc.zc_objset_type = DMU_OST_ZVOL; 3140 } else { 3141 zc.zc_objset_type = DMU_OST_ZFS; 3142 } 3143 3144 zc.zc_defer_destroy = defer; 3145 if (zfs_ioctl(zhp->zfs_hdl, ZFS_IOC_DESTROY, &zc) != 0 && 3146 errno != ENOENT) { 3147 return (zfs_standard_error_fmt(zhp->zfs_hdl, errno, 3148 dgettext(TEXT_DOMAIN, "cannot destroy '%s'"), 3149 zhp->zfs_name)); 3150 } 3151 3152 remove_mountpoint(zhp); 3153 3154 return (0); 3155} 3156 3157struct destroydata { 3158 nvlist_t *nvl; 3159 const char *snapname; 3160}; 3161 3162static int 3163zfs_check_snap_cb(zfs_handle_t *zhp, void *arg) 3164{ 3165 struct destroydata *dd = arg; 3166 char name[ZFS_MAXNAMELEN]; 3167 int rv = 0; 3168 3169 (void) snprintf(name, sizeof (name), 3170 "%s@%s", zhp->zfs_name, dd->snapname); 3171 3172 if (lzc_exists(name)) 3173 verify(nvlist_add_boolean(dd->nvl, name) == 0); 3174 3175 rv = zfs_iter_filesystems(zhp, zfs_check_snap_cb, dd); 3176 zfs_close(zhp); 3177 return (rv); 3178} 3179 3180/* 3181 * Destroys all snapshots with the given name in zhp & descendants. 3182 */ 3183int 3184zfs_destroy_snaps(zfs_handle_t *zhp, char *snapname, boolean_t defer) 3185{ 3186 int ret; 3187 struct destroydata dd = { 0 }; 3188 3189 dd.snapname = snapname; 3190 verify(nvlist_alloc(&dd.nvl, NV_UNIQUE_NAME, 0) == 0); 3191 (void) zfs_check_snap_cb(zfs_handle_dup(zhp), &dd); 3192 3193 if (nvlist_empty(dd.nvl)) { 3194 ret = zfs_standard_error_fmt(zhp->zfs_hdl, ENOENT, 3195 dgettext(TEXT_DOMAIN, "cannot destroy '%s@%s'"), 3196 zhp->zfs_name, snapname); 3197 } else { 3198 ret = zfs_destroy_snaps_nvl(zhp->zfs_hdl, dd.nvl, defer); 3199 } 3200 nvlist_free(dd.nvl); 3201 return (ret); 3202} 3203 3204/* 3205 * Destroys all the snapshots named in the nvlist. 3206 */ 3207int 3208zfs_destroy_snaps_nvl(libzfs_handle_t *hdl, nvlist_t *snaps, boolean_t defer) 3209{ 3210 int ret; 3211 nvlist_t *errlist; 3212 3213 ret = lzc_destroy_snaps(snaps, defer, &errlist); 3214 3215 if (ret == 0) 3216 return (0); 3217 3218 if (nvlist_empty(errlist)) { 3219 char errbuf[1024]; 3220 (void) snprintf(errbuf, sizeof (errbuf), 3221 dgettext(TEXT_DOMAIN, "cannot destroy snapshots")); 3222 3223 ret = zfs_standard_error(hdl, ret, errbuf); 3224 } 3225 for (nvpair_t *pair = nvlist_next_nvpair(errlist, NULL); 3226 pair != NULL; pair = nvlist_next_nvpair(errlist, pair)) { 3227 char errbuf[1024]; 3228 (void) snprintf(errbuf, sizeof (errbuf), 3229 dgettext(TEXT_DOMAIN, "cannot destroy snapshot %s"), 3230 nvpair_name(pair)); 3231 3232 switch (fnvpair_value_int32(pair)) { 3233 case EEXIST: 3234 zfs_error_aux(hdl, 3235 dgettext(TEXT_DOMAIN, "snapshot is cloned")); 3236 ret = zfs_error(hdl, EZFS_EXISTS, errbuf); 3237 break; 3238 default: 3239 ret = zfs_standard_error(hdl, errno, errbuf); 3240 break; 3241 } 3242 } 3243 3244 return (ret); 3245} 3246 3247/* 3248 * Clones the given dataset. The target must be of the same type as the source. 3249 */ 3250int 3251zfs_clone(zfs_handle_t *zhp, const char *target, nvlist_t *props) 3252{ 3253 char parent[ZFS_MAXNAMELEN]; 3254 int ret; 3255 char errbuf[1024]; 3256 libzfs_handle_t *hdl = zhp->zfs_hdl; 3257 uint64_t zoned; 3258 3259 assert(zhp->zfs_type == ZFS_TYPE_SNAPSHOT); 3260 3261 (void) snprintf(errbuf, sizeof (errbuf), dgettext(TEXT_DOMAIN, 3262 "cannot create '%s'"), target); 3263 3264 /* validate the target/clone name */ 3265 if (!zfs_validate_name(hdl, target, ZFS_TYPE_FILESYSTEM, B_TRUE)) 3266 return (zfs_error(hdl, EZFS_INVALIDNAME, errbuf)); 3267 3268 /* validate parents exist */ 3269 if (check_parents(hdl, target, &zoned, B_FALSE, NULL) != 0) 3270 return (-1); 3271 3272 (void) parent_name(target, parent, sizeof (parent)); 3273 3274 /* do the clone */ 3275 3276 if (props) { 3277 zfs_type_t type; 3278 if (ZFS_IS_VOLUME(zhp)) { 3279 type = ZFS_TYPE_VOLUME; 3280 } else { 3281 type = ZFS_TYPE_FILESYSTEM; 3282 } 3283 if ((props = zfs_valid_proplist(hdl, type, props, zoned, 3284 zhp, errbuf)) == NULL) 3285 return (-1); 3286 } 3287 3288 ret = lzc_clone(target, zhp->zfs_name, props); 3289 nvlist_free(props); 3290 3291 if (ret != 0) { 3292 switch (errno) { 3293 3294 case ENOENT: 3295 /* 3296 * The parent doesn't exist. We should have caught this 3297 * above, but there may a race condition that has since 3298 * destroyed the parent. 3299 * 3300 * At this point, we don't know whether it's the source 3301 * that doesn't exist anymore, or whether the target 3302 * dataset doesn't exist. 3303 */ 3304 zfs_error_aux(zhp->zfs_hdl, dgettext(TEXT_DOMAIN, 3305 "no such parent '%s'"), parent); 3306 return (zfs_error(zhp->zfs_hdl, EZFS_NOENT, errbuf)); 3307 3308 case EXDEV: 3309 zfs_error_aux(zhp->zfs_hdl, dgettext(TEXT_DOMAIN, 3310 "source and target pools differ")); 3311 return (zfs_error(zhp->zfs_hdl, EZFS_CROSSTARGET, 3312 errbuf)); 3313 3314 default: 3315 return (zfs_standard_error(zhp->zfs_hdl, errno, 3316 errbuf)); 3317 } 3318 } 3319 3320 return (ret); 3321} 3322 3323/* 3324 * Promotes the given clone fs to be the clone parent. 3325 */ 3326int 3327zfs_promote(zfs_handle_t *zhp) 3328{ 3329 libzfs_handle_t *hdl = zhp->zfs_hdl; 3330 zfs_cmd_t zc = { 0 }; 3331 char parent[MAXPATHLEN]; 3332 int ret; 3333 char errbuf[1024]; 3334 3335 (void) snprintf(errbuf, sizeof (errbuf), dgettext(TEXT_DOMAIN, 3336 "cannot promote '%s'"), zhp->zfs_name); 3337 3338 if (zhp->zfs_type == ZFS_TYPE_SNAPSHOT) { 3339 zfs_error_aux(hdl, dgettext(TEXT_DOMAIN, 3340 "snapshots can not be promoted")); 3341 return (zfs_error(hdl, EZFS_BADTYPE, errbuf)); 3342 } 3343 3344 (void) strlcpy(parent, zhp->zfs_dmustats.dds_origin, sizeof (parent)); 3345 if (parent[0] == '\0') { 3346 zfs_error_aux(hdl, dgettext(TEXT_DOMAIN, 3347 "not a cloned filesystem")); 3348 return (zfs_error(hdl, EZFS_BADTYPE, errbuf)); 3349 } 3350 3351 (void) strlcpy(zc.zc_value, zhp->zfs_dmustats.dds_origin, 3352 sizeof (zc.zc_value)); 3353 (void) strlcpy(zc.zc_name, zhp->zfs_name, sizeof (zc.zc_name)); 3354 ret = zfs_ioctl(hdl, ZFS_IOC_PROMOTE, &zc); 3355 3356 if (ret != 0) { 3357 int save_errno = errno; 3358 3359 switch (save_errno) { 3360 case EEXIST: 3361 /* There is a conflicting snapshot name. */ 3362 zfs_error_aux(hdl, dgettext(TEXT_DOMAIN, 3363 "conflicting snapshot '%s' from parent '%s'"), 3364 zc.zc_string, parent); 3365 return (zfs_error(hdl, EZFS_EXISTS, errbuf)); 3366 3367 default: 3368 return (zfs_standard_error(hdl, save_errno, errbuf)); 3369 } 3370 } 3371 return (ret); 3372} 3373 3374typedef struct snapdata { 3375 nvlist_t *sd_nvl; 3376 const char *sd_snapname; 3377} snapdata_t; 3378 3379static int 3380zfs_snapshot_cb(zfs_handle_t *zhp, void *arg) 3381{ 3382 snapdata_t *sd = arg; 3383 char name[ZFS_MAXNAMELEN]; 3384 int rv = 0; 3385 3386 if (zfs_prop_get_int(zhp, ZFS_PROP_INCONSISTENT) == 0) { 3387 (void) snprintf(name, sizeof (name), 3388 "%s@%s", zfs_get_name(zhp), sd->sd_snapname); 3389 3390 fnvlist_add_boolean(sd->sd_nvl, name); 3391 3392 rv = zfs_iter_filesystems(zhp, zfs_snapshot_cb, sd); 3393 } 3394 zfs_close(zhp); 3395 3396 return (rv); 3397} 3398 3399/* 3400 * Creates snapshots. The keys in the snaps nvlist are the snapshots to be 3401 * created. 3402 */ 3403int 3404zfs_snapshot_nvl(libzfs_handle_t *hdl, nvlist_t *snaps, nvlist_t *props) 3405{ 3406 int ret; 3407 char errbuf[1024]; 3408 nvpair_t *elem; 3409 nvlist_t *errors; 3410 3411 (void) snprintf(errbuf, sizeof (errbuf), dgettext(TEXT_DOMAIN, 3412 "cannot create snapshots ")); 3413 3414 elem = NULL; 3415 while ((elem = nvlist_next_nvpair(snaps, elem)) != NULL) { 3416 const char *snapname = nvpair_name(elem); 3417 3418 /* validate the target name */ 3419 if (!zfs_validate_name(hdl, snapname, ZFS_TYPE_SNAPSHOT, 3420 B_TRUE)) { 3421 (void) snprintf(errbuf, sizeof (errbuf), 3422 dgettext(TEXT_DOMAIN, 3423 "cannot create snapshot '%s'"), snapname); 3424 return (zfs_error(hdl, EZFS_INVALIDNAME, errbuf)); 3425 } 3426 } 3427 3428 if (props != NULL && 3429 (props = zfs_valid_proplist(hdl, ZFS_TYPE_SNAPSHOT, 3430 props, B_FALSE, NULL, errbuf)) == NULL) { 3431 return (-1); 3432 } 3433 3434 ret = lzc_snapshot(snaps, props, &errors); 3435 3436 if (ret != 0) { 3437 boolean_t printed = B_FALSE; 3438 for (elem = nvlist_next_nvpair(errors, NULL); 3439 elem != NULL; 3440 elem = nvlist_next_nvpair(errors, elem)) { 3441 (void) snprintf(errbuf, sizeof (errbuf), 3442 dgettext(TEXT_DOMAIN, 3443 "cannot create snapshot '%s'"), nvpair_name(elem)); 3444 (void) zfs_standard_error(hdl, 3445 fnvpair_value_int32(elem), errbuf); 3446 printed = B_TRUE; 3447 } 3448 if (!printed) { 3449 switch (ret) { 3450 case EXDEV: 3451 zfs_error_aux(hdl, dgettext(TEXT_DOMAIN, 3452 "multiple snapshots of same " 3453 "fs not allowed")); 3454 (void) zfs_error(hdl, EZFS_EXISTS, errbuf); 3455 3456 break; 3457 default: 3458 (void) zfs_standard_error(hdl, ret, errbuf); 3459 } 3460 } 3461 } 3462 3463 nvlist_free(props); 3464 nvlist_free(errors); 3465 return (ret); 3466} 3467 3468int 3469zfs_snapshot(libzfs_handle_t *hdl, const char *path, boolean_t recursive, 3470 nvlist_t *props) 3471{ 3472 int ret; 3473 snapdata_t sd = { 0 }; 3474 char fsname[ZFS_MAXNAMELEN]; 3475 char *cp; 3476 zfs_handle_t *zhp; 3477 char errbuf[1024]; 3478 3479 (void) snprintf(errbuf, sizeof (errbuf), dgettext(TEXT_DOMAIN, 3480 "cannot snapshot %s"), path); 3481 3482 if (!zfs_validate_name(hdl, path, ZFS_TYPE_SNAPSHOT, B_TRUE)) 3483 return (zfs_error(hdl, EZFS_INVALIDNAME, errbuf)); 3484 3485 (void) strlcpy(fsname, path, sizeof (fsname)); 3486 cp = strchr(fsname, '@'); 3487 *cp = '\0'; 3488 sd.sd_snapname = cp + 1; 3489 3490 if ((zhp = zfs_open(hdl, fsname, ZFS_TYPE_FILESYSTEM | 3491 ZFS_TYPE_VOLUME)) == NULL) { 3492 return (-1); 3493 } 3494 3495 verify(nvlist_alloc(&sd.sd_nvl, NV_UNIQUE_NAME, 0) == 0); 3496 if (recursive) { 3497 (void) zfs_snapshot_cb(zfs_handle_dup(zhp), &sd); 3498 } else { 3499 fnvlist_add_boolean(sd.sd_nvl, path); 3500 } 3501 3502 ret = zfs_snapshot_nvl(hdl, sd.sd_nvl, props); 3503 nvlist_free(sd.sd_nvl); 3504 zfs_close(zhp); 3505 return (ret); 3506} 3507 3508/* 3509 * Destroy any more recent snapshots. We invoke this callback on any dependents 3510 * of the snapshot first. If the 'cb_dependent' member is non-zero, then this 3511 * is a dependent and we should just destroy it without checking the transaction 3512 * group. 3513 */ 3514typedef struct rollback_data { 3515 const char *cb_target; /* the snapshot */ 3516 uint64_t cb_create; /* creation time reference */ 3517 boolean_t cb_error; 3518 boolean_t cb_dependent; 3519 boolean_t cb_force; 3520} rollback_data_t; 3521 3522static int 3523rollback_destroy(zfs_handle_t *zhp, void *data) 3524{ 3525 rollback_data_t *cbp = data; 3526 3527 if (!cbp->cb_dependent) { 3528 if (strcmp(zhp->zfs_name, cbp->cb_target) != 0 && 3529 zfs_get_type(zhp) == ZFS_TYPE_SNAPSHOT && 3530 zfs_prop_get_int(zhp, ZFS_PROP_CREATETXG) > 3531 cbp->cb_create) { 3532 3533 cbp->cb_dependent = B_TRUE; 3534 cbp->cb_error |= zfs_iter_dependents(zhp, B_FALSE, 3535 rollback_destroy, cbp); 3536 cbp->cb_dependent = B_FALSE; 3537 3538 cbp->cb_error |= zfs_destroy(zhp, B_FALSE); 3539 } 3540 } else { 3541 /* We must destroy this clone; first unmount it */ 3542 prop_changelist_t *clp; 3543 3544 clp = changelist_gather(zhp, ZFS_PROP_NAME, 0, 3545 cbp->cb_force ? MS_FORCE: 0); 3546 if (clp == NULL || changelist_prefix(clp) != 0) { 3547 cbp->cb_error = B_TRUE; 3548 zfs_close(zhp); 3549 return (0); 3550 } 3551 if (zfs_destroy(zhp, B_FALSE) != 0) 3552 cbp->cb_error = B_TRUE; 3553 else 3554 changelist_remove(clp, zhp->zfs_name); 3555 (void) changelist_postfix(clp); 3556 changelist_free(clp); 3557 } 3558 3559 zfs_close(zhp); 3560 return (0); 3561} 3562 3563/* 3564 * Given a dataset, rollback to a specific snapshot, discarding any 3565 * data changes since then and making it the active dataset. 3566 * 3567 * Any snapshots more recent than the target are destroyed, along with 3568 * their dependents. 3569 */ 3570int 3571zfs_rollback(zfs_handle_t *zhp, zfs_handle_t *snap, boolean_t force) 3572{ 3573 rollback_data_t cb = { 0 }; 3574 int err; 3575 boolean_t restore_resv = 0; 3576 uint64_t old_volsize, new_volsize; 3577 zfs_prop_t resv_prop; 3578 3579 assert(zhp->zfs_type == ZFS_TYPE_FILESYSTEM || 3580 zhp->zfs_type == ZFS_TYPE_VOLUME); 3581 3582 /* 3583 * Destroy all recent snapshots and their dependents. 3584 */ 3585 cb.cb_force = force; 3586 cb.cb_target = snap->zfs_name; 3587 cb.cb_create = zfs_prop_get_int(snap, ZFS_PROP_CREATETXG); 3588 (void) zfs_iter_children(zhp, rollback_destroy, &cb); 3589 3590 if (cb.cb_error) 3591 return (-1); 3592 3593 /* 3594 * Now that we have verified that the snapshot is the latest, 3595 * rollback to the given snapshot. 3596 */ 3597 3598 if (zhp->zfs_type == ZFS_TYPE_VOLUME) { 3599 if (zfs_which_resv_prop(zhp, &resv_prop) < 0) 3600 return (-1); 3601 old_volsize = zfs_prop_get_int(zhp, ZFS_PROP_VOLSIZE); 3602 restore_resv = 3603 (old_volsize == zfs_prop_get_int(zhp, resv_prop)); 3604 } 3605 3606 /* 3607 * We rely on zfs_iter_children() to verify that there are no 3608 * newer snapshots for the given dataset. Therefore, we can 3609 * simply pass the name on to the ioctl() call. There is still 3610 * an unlikely race condition where the user has taken a 3611 * snapshot since we verified that this was the most recent. 3612 */ 3613 err = lzc_rollback(zhp->zfs_name, NULL, 0); 3614 if (err != 0) { 3615 (void) zfs_standard_error_fmt(zhp->zfs_hdl, errno, 3616 dgettext(TEXT_DOMAIN, "cannot rollback '%s'"), 3617 zhp->zfs_name); 3618 return (err); 3619 } 3620 3621 /* 3622 * For volumes, if the pre-rollback volsize matched the pre- 3623 * rollback reservation and the volsize has changed then set 3624 * the reservation property to the post-rollback volsize. 3625 * Make a new handle since the rollback closed the dataset. 3626 */ 3627 if ((zhp->zfs_type == ZFS_TYPE_VOLUME) && 3628 (zhp = make_dataset_handle(zhp->zfs_hdl, zhp->zfs_name))) { 3629 if (restore_resv) { 3630 new_volsize = zfs_prop_get_int(zhp, ZFS_PROP_VOLSIZE); 3631 if (old_volsize != new_volsize) 3632 err = zfs_prop_set_int(zhp, resv_prop, 3633 new_volsize); 3634 } 3635 zfs_close(zhp); 3636 } 3637 return (err); 3638} 3639 3640/* 3641 * Renames the given dataset. 3642 */ 3643int 3644zfs_rename(zfs_handle_t *zhp, const char *source, const char *target, 3645 renameflags_t flags) 3646{ 3647 int ret; 3648 zfs_cmd_t zc = { 0 }; 3649 char *delim; 3650 prop_changelist_t *cl = NULL; 3651 zfs_handle_t *zhrp = NULL; 3652 char *parentname = NULL; 3653 char parent[ZFS_MAXNAMELEN]; 3654 char property[ZFS_MAXPROPLEN]; 3655 libzfs_handle_t *hdl = zhp->zfs_hdl; 3656 char errbuf[1024]; 3657 3658 /* if we have the same exact name, just return success */ 3659 if (strcmp(zhp->zfs_name, target) == 0) 3660 return (0); 3661 3662 (void) snprintf(errbuf, sizeof (errbuf), dgettext(TEXT_DOMAIN, 3663 "cannot rename to '%s'"), target); 3664 3665 if (source != NULL) { 3666 /* 3667 * This is recursive snapshots rename, put snapshot name 3668 * (that might not exist) into zfs_name. 3669 */ 3670 assert(flags.recurse); 3671 3672 (void) strlcat(zhp->zfs_name, "@", sizeof(zhp->zfs_name)); 3673 (void) strlcat(zhp->zfs_name, source, sizeof(zhp->zfs_name)); 3674 zhp->zfs_type = ZFS_TYPE_SNAPSHOT; 3675 } 3676 3677 /* 3678 * Make sure the target name is valid 3679 */ 3680 if (zhp->zfs_type == ZFS_TYPE_SNAPSHOT) { 3681 if ((strchr(target, '@') == NULL) || 3682 *target == '@') { 3683 /* 3684 * Snapshot target name is abbreviated, 3685 * reconstruct full dataset name 3686 */ 3687 (void) strlcpy(parent, zhp->zfs_name, 3688 sizeof (parent)); 3689 delim = strchr(parent, '@'); 3690 if (strchr(target, '@') == NULL) 3691 *(++delim) = '\0'; 3692 else 3693 *delim = '\0'; 3694 (void) strlcat(parent, target, sizeof (parent)); 3695 target = parent; 3696 } else { 3697 /* 3698 * Make sure we're renaming within the same dataset. 3699 */ 3700 delim = strchr(target, '@'); 3701 if (strncmp(zhp->zfs_name, target, delim - target) 3702 != 0 || zhp->zfs_name[delim - target] != '@') { 3703 zfs_error_aux(hdl, dgettext(TEXT_DOMAIN, 3704 "snapshots must be part of same " 3705 "dataset")); 3706 return (zfs_error(hdl, EZFS_CROSSTARGET, 3707 errbuf)); 3708 } 3709 } 3710 if (!zfs_validate_name(hdl, target, zhp->zfs_type, B_TRUE)) 3711 return (zfs_error(hdl, EZFS_INVALIDNAME, errbuf)); 3712 } else { 3713 if (flags.recurse) { 3714 zfs_error_aux(hdl, dgettext(TEXT_DOMAIN, 3715 "recursive rename must be a snapshot")); 3716 return (zfs_error(hdl, EZFS_BADTYPE, errbuf)); 3717 } 3718 3719 if (!zfs_validate_name(hdl, target, zhp->zfs_type, B_TRUE)) 3720 return (zfs_error(hdl, EZFS_INVALIDNAME, errbuf)); 3721 3722 /* validate parents */ 3723 if (check_parents(hdl, target, NULL, B_FALSE, NULL) != 0) 3724 return (-1); 3725 3726 /* make sure we're in the same pool */ 3727 verify((delim = strchr(target, '/')) != NULL); 3728 if (strncmp(zhp->zfs_name, target, delim - target) != 0 || 3729 zhp->zfs_name[delim - target] != '/') { 3730 zfs_error_aux(hdl, dgettext(TEXT_DOMAIN, 3731 "datasets must be within same pool")); 3732 return (zfs_error(hdl, EZFS_CROSSTARGET, errbuf)); 3733 } 3734 3735 /* new name cannot be a child of the current dataset name */ 3736 if (is_descendant(zhp->zfs_name, target)) { 3737 zfs_error_aux(hdl, dgettext(TEXT_DOMAIN, 3738 "New dataset name cannot be a descendant of " 3739 "current dataset name")); 3740 return (zfs_error(hdl, EZFS_INVALIDNAME, errbuf)); 3741 } 3742 } 3743 3744 (void) snprintf(errbuf, sizeof (errbuf), 3745 dgettext(TEXT_DOMAIN, "cannot rename '%s'"), zhp->zfs_name); 3746 3747 if (getzoneid() == GLOBAL_ZONEID && 3748 zfs_prop_get_int(zhp, ZFS_PROP_ZONED)) { 3749 zfs_error_aux(hdl, dgettext(TEXT_DOMAIN, 3750 "dataset is used in a non-global zone")); 3751 return (zfs_error(hdl, EZFS_ZONED, errbuf)); 3752 } 3753 3754 /* 3755 * Avoid unmounting file systems with mountpoint property set to 3756 * 'legacy' or 'none' even if -u option is not given. 3757 */ 3758 if (zhp->zfs_type == ZFS_TYPE_FILESYSTEM && 3759 !flags.recurse && !flags.nounmount && 3760 zfs_prop_get(zhp, ZFS_PROP_MOUNTPOINT, property, 3761 sizeof (property), NULL, NULL, 0, B_FALSE) == 0 && 3762 (strcmp(property, "legacy") == 0 || 3763 strcmp(property, "none") == 0)) { 3764 flags.nounmount = B_TRUE; 3765 } 3766 3767 if (flags.recurse) { 3768 3769 parentname = zfs_strdup(zhp->zfs_hdl, zhp->zfs_name); 3770 if (parentname == NULL) { 3771 ret = -1; 3772 goto error; 3773 } 3774 delim = strchr(parentname, '@'); 3775 *delim = '\0'; 3776 zhrp = zfs_open(zhp->zfs_hdl, parentname, ZFS_TYPE_DATASET); 3777 if (zhrp == NULL) { 3778 ret = -1; 3779 goto error; 3780 } 3781 3782 } else { 3783 if ((cl = changelist_gather(zhp, ZFS_PROP_NAME, 3784 flags.nounmount ? CL_GATHER_DONT_UNMOUNT : 0, 3785 flags.forceunmount ? MS_FORCE : 0)) == NULL) { 3786 return (-1); 3787 } 3788 3789 if (changelist_haszonedchild(cl)) { 3790 zfs_error_aux(hdl, dgettext(TEXT_DOMAIN, 3791 "child dataset with inherited mountpoint is used " 3792 "in a non-global zone")); 3793 (void) zfs_error(hdl, EZFS_ZONED, errbuf); 3794 goto error; 3795 } 3796 3797 if ((ret = changelist_prefix(cl)) != 0) 3798 goto error; 3799 } 3800 3801 if (ZFS_IS_VOLUME(zhp)) 3802 zc.zc_objset_type = DMU_OST_ZVOL; 3803 else 3804 zc.zc_objset_type = DMU_OST_ZFS; 3805 3806 (void) strlcpy(zc.zc_name, zhp->zfs_name, sizeof (zc.zc_name)); 3807 (void) strlcpy(zc.zc_value, target, sizeof (zc.zc_value)); 3808 3809 zc.zc_cookie = flags.recurse ? 1 : 0; 3810 if (flags.nounmount) 3811 zc.zc_cookie |= 2; 3812 3813 if ((ret = zfs_ioctl(zhp->zfs_hdl, ZFS_IOC_RENAME, &zc)) != 0) { 3814 /* 3815 * if it was recursive, the one that actually failed will 3816 * be in zc.zc_name 3817 */ 3818 (void) snprintf(errbuf, sizeof (errbuf), dgettext(TEXT_DOMAIN, 3819 "cannot rename '%s'"), zc.zc_name); 3820 3821 if (flags.recurse && errno == EEXIST) { 3822 zfs_error_aux(hdl, dgettext(TEXT_DOMAIN, 3823 "a child dataset already has a snapshot " 3824 "with the new name")); 3825 (void) zfs_error(hdl, EZFS_EXISTS, errbuf); 3826 } else { 3827 (void) zfs_standard_error(zhp->zfs_hdl, errno, errbuf); 3828 } 3829 3830 /* 3831 * On failure, we still want to remount any filesystems that 3832 * were previously mounted, so we don't alter the system state. 3833 */ 3834 if (!flags.recurse) 3835 (void) changelist_postfix(cl); 3836 } else { 3837 if (!flags.recurse) { 3838 changelist_rename(cl, zfs_get_name(zhp), target); 3839 ret = changelist_postfix(cl); 3840 } 3841 } 3842 3843error: 3844 if (parentname) { 3845 free(parentname); 3846 } 3847 if (zhrp) { 3848 zfs_close(zhrp); 3849 } 3850 if (cl) { 3851 changelist_free(cl); 3852 } 3853 return (ret); 3854} 3855 3856nvlist_t * 3857zfs_get_user_props(zfs_handle_t *zhp) 3858{ 3859 return (zhp->zfs_user_props); 3860} 3861 3862nvlist_t * 3863zfs_get_recvd_props(zfs_handle_t *zhp) 3864{ 3865 if (zhp->zfs_recvd_props == NULL) 3866 if (get_recvd_props_ioctl(zhp) != 0) 3867 return (NULL); 3868 return (zhp->zfs_recvd_props); 3869} 3870 3871/* 3872 * This function is used by 'zfs list' to determine the exact set of columns to 3873 * display, and their maximum widths. This does two main things: 3874 * 3875 * - If this is a list of all properties, then expand the list to include 3876 * all native properties, and set a flag so that for each dataset we look 3877 * for new unique user properties and add them to the list. 3878 * 3879 * - For non fixed-width properties, keep track of the maximum width seen 3880 * so that we can size the column appropriately. If the user has 3881 * requested received property values, we also need to compute the width 3882 * of the RECEIVED column. 3883 */ 3884int 3885zfs_expand_proplist(zfs_handle_t *zhp, zprop_list_t **plp, boolean_t received, 3886 boolean_t literal) 3887{ 3888 libzfs_handle_t *hdl = zhp->zfs_hdl; 3889 zprop_list_t *entry; 3890 zprop_list_t **last, **start; 3891 nvlist_t *userprops, *propval; 3892 nvpair_t *elem; 3893 char *strval; 3894 char buf[ZFS_MAXPROPLEN]; 3895 3896 if (zprop_expand_list(hdl, plp, ZFS_TYPE_DATASET) != 0) 3897 return (-1); 3898 3899 userprops = zfs_get_user_props(zhp); 3900 3901 entry = *plp; 3902 if (entry->pl_all && nvlist_next_nvpair(userprops, NULL) != NULL) { 3903 /* 3904 * Go through and add any user properties as necessary. We 3905 * start by incrementing our list pointer to the first 3906 * non-native property. 3907 */ 3908 start = plp; 3909 while (*start != NULL) { 3910 if ((*start)->pl_prop == ZPROP_INVAL) 3911 break; 3912 start = &(*start)->pl_next; 3913 } 3914 3915 elem = NULL; 3916 while ((elem = nvlist_next_nvpair(userprops, elem)) != NULL) { 3917 /* 3918 * See if we've already found this property in our list. 3919 */ 3920 for (last = start; *last != NULL; 3921 last = &(*last)->pl_next) { 3922 if (strcmp((*last)->pl_user_prop, 3923 nvpair_name(elem)) == 0) 3924 break; 3925 } 3926 3927 if (*last == NULL) { 3928 if ((entry = zfs_alloc(hdl, 3929 sizeof (zprop_list_t))) == NULL || 3930 ((entry->pl_user_prop = zfs_strdup(hdl, 3931 nvpair_name(elem)))) == NULL) { 3932 free(entry); 3933 return (-1); 3934 } 3935 3936 entry->pl_prop = ZPROP_INVAL; 3937 entry->pl_width = strlen(nvpair_name(elem)); 3938 entry->pl_all = B_TRUE; 3939 *last = entry; 3940 } 3941 } 3942 } 3943 3944 /* 3945 * Now go through and check the width of any non-fixed columns 3946 */ 3947 for (entry = *plp; entry != NULL; entry = entry->pl_next) { 3948 if (entry->pl_fixed && !literal) 3949 continue; 3950 3951 if (entry->pl_prop != ZPROP_INVAL) { 3952 if (zfs_prop_get(zhp, entry->pl_prop, 3953 buf, sizeof (buf), NULL, NULL, 0, literal) == 0) { 3954 if (strlen(buf) > entry->pl_width) 3955 entry->pl_width = strlen(buf); 3956 } 3957 if (received && zfs_prop_get_recvd(zhp, 3958 zfs_prop_to_name(entry->pl_prop), 3959 buf, sizeof (buf), literal) == 0) 3960 if (strlen(buf) > entry->pl_recvd_width) 3961 entry->pl_recvd_width = strlen(buf); 3962 } else { 3963 if (nvlist_lookup_nvlist(userprops, entry->pl_user_prop, 3964 &propval) == 0) { 3965 verify(nvlist_lookup_string(propval, 3966 ZPROP_VALUE, &strval) == 0); 3967 if (strlen(strval) > entry->pl_width) 3968 entry->pl_width = strlen(strval); 3969 } 3970 if (received && zfs_prop_get_recvd(zhp, 3971 entry->pl_user_prop, 3972 buf, sizeof (buf), literal) == 0) 3973 if (strlen(buf) > entry->pl_recvd_width) 3974 entry->pl_recvd_width = strlen(buf); 3975 } 3976 } 3977 3978 return (0); 3979} 3980 3981int 3982zfs_deleg_share_nfs(libzfs_handle_t *hdl, char *dataset, char *path, 3983 char *resource, void *export, void *sharetab, 3984 int sharemax, zfs_share_op_t operation) 3985{ 3986 zfs_cmd_t zc = { 0 }; 3987 int error; 3988 3989 (void) strlcpy(zc.zc_name, dataset, sizeof (zc.zc_name)); 3990 (void) strlcpy(zc.zc_value, path, sizeof (zc.zc_value)); 3991 if (resource) 3992 (void) strlcpy(zc.zc_string, resource, sizeof (zc.zc_string)); 3993 zc.zc_share.z_sharedata = (uint64_t)(uintptr_t)sharetab; 3994 zc.zc_share.z_exportdata = (uint64_t)(uintptr_t)export; 3995 zc.zc_share.z_sharetype = operation; 3996 zc.zc_share.z_sharemax = sharemax; 3997 error = ioctl(hdl->libzfs_fd, ZFS_IOC_SHARE, &zc); 3998 return (error); 3999} 4000 4001void 4002zfs_prune_proplist(zfs_handle_t *zhp, uint8_t *props) 4003{ 4004 nvpair_t *curr; 4005 4006 /* 4007 * Keep a reference to the props-table against which we prune the 4008 * properties. 4009 */ 4010 zhp->zfs_props_table = props; 4011 4012 curr = nvlist_next_nvpair(zhp->zfs_props, NULL); 4013 4014 while (curr) { 4015 zfs_prop_t zfs_prop = zfs_name_to_prop(nvpair_name(curr)); 4016 nvpair_t *next = nvlist_next_nvpair(zhp->zfs_props, curr); 4017 4018 /* 4019 * User properties will result in ZPROP_INVAL, and since we 4020 * only know how to prune standard ZFS properties, we always 4021 * leave these in the list. This can also happen if we 4022 * encounter an unknown DSL property (when running older 4023 * software, for example). 4024 */ 4025 if (zfs_prop != ZPROP_INVAL && props[zfs_prop] == B_FALSE) 4026 (void) nvlist_remove(zhp->zfs_props, 4027 nvpair_name(curr), nvpair_type(curr)); 4028 curr = next; 4029 } 4030} 4031 4032#ifdef sun 4033static int 4034zfs_smb_acl_mgmt(libzfs_handle_t *hdl, char *dataset, char *path, 4035 zfs_smb_acl_op_t cmd, char *resource1, char *resource2) 4036{ 4037 zfs_cmd_t zc = { 0 }; 4038 nvlist_t *nvlist = NULL; 4039 int error; 4040 4041 (void) strlcpy(zc.zc_name, dataset, sizeof (zc.zc_name)); 4042 (void) strlcpy(zc.zc_value, path, sizeof (zc.zc_value)); 4043 zc.zc_cookie = (uint64_t)cmd; 4044 4045 if (cmd == ZFS_SMB_ACL_RENAME) { 4046 if (nvlist_alloc(&nvlist, NV_UNIQUE_NAME, 0) != 0) { 4047 (void) no_memory(hdl); 4048 return (NULL); 4049 } 4050 } 4051 4052 switch (cmd) { 4053 case ZFS_SMB_ACL_ADD: 4054 case ZFS_SMB_ACL_REMOVE: 4055 (void) strlcpy(zc.zc_string, resource1, sizeof (zc.zc_string)); 4056 break; 4057 case ZFS_SMB_ACL_RENAME: 4058 if (nvlist_add_string(nvlist, ZFS_SMB_ACL_SRC, 4059 resource1) != 0) { 4060 (void) no_memory(hdl); 4061 return (-1); 4062 } 4063 if (nvlist_add_string(nvlist, ZFS_SMB_ACL_TARGET, 4064 resource2) != 0) { 4065 (void) no_memory(hdl); 4066 return (-1); 4067 } 4068 if (zcmd_write_src_nvlist(hdl, &zc, nvlist) != 0) { 4069 nvlist_free(nvlist); 4070 return (-1); 4071 } 4072 break; 4073 case ZFS_SMB_ACL_PURGE: 4074 break; 4075 default: 4076 return (-1); 4077 } 4078 error = ioctl(hdl->libzfs_fd, ZFS_IOC_SMB_ACL, &zc); 4079 if (nvlist) 4080 nvlist_free(nvlist); 4081 return (error); 4082} 4083 4084int 4085zfs_smb_acl_add(libzfs_handle_t *hdl, char *dataset, 4086 char *path, char *resource) 4087{ 4088 return (zfs_smb_acl_mgmt(hdl, dataset, path, ZFS_SMB_ACL_ADD, 4089 resource, NULL)); 4090} 4091 4092int 4093zfs_smb_acl_remove(libzfs_handle_t *hdl, char *dataset, 4094 char *path, char *resource) 4095{ 4096 return (zfs_smb_acl_mgmt(hdl, dataset, path, ZFS_SMB_ACL_REMOVE, 4097 resource, NULL)); 4098} 4099 4100int 4101zfs_smb_acl_purge(libzfs_handle_t *hdl, char *dataset, char *path) 4102{ 4103 return (zfs_smb_acl_mgmt(hdl, dataset, path, ZFS_SMB_ACL_PURGE, 4104 NULL, NULL)); 4105} 4106 4107int 4108zfs_smb_acl_rename(libzfs_handle_t *hdl, char *dataset, char *path, 4109 char *oldname, char *newname) 4110{ 4111 return (zfs_smb_acl_mgmt(hdl, dataset, path, ZFS_SMB_ACL_RENAME, 4112 oldname, newname)); 4113} 4114#endif /* sun */ 4115 4116int 4117zfs_userspace(zfs_handle_t *zhp, zfs_userquota_prop_t type, 4118 zfs_userspace_cb_t func, void *arg) 4119{ 4120 zfs_cmd_t zc = { 0 }; 4121 zfs_useracct_t buf[100]; 4122 libzfs_handle_t *hdl = zhp->zfs_hdl; 4123 int ret; 4124 4125 (void) strlcpy(zc.zc_name, zhp->zfs_name, sizeof (zc.zc_name)); 4126 4127 zc.zc_objset_type = type; 4128 zc.zc_nvlist_dst = (uintptr_t)buf; 4129 4130 for (;;) { 4131 zfs_useracct_t *zua = buf; 4132 4133 zc.zc_nvlist_dst_size = sizeof (buf); 4134 if (zfs_ioctl(hdl, ZFS_IOC_USERSPACE_MANY, &zc) != 0) { 4135 char errbuf[1024]; 4136 4137 (void) snprintf(errbuf, sizeof (errbuf), 4138 dgettext(TEXT_DOMAIN, 4139 "cannot get used/quota for %s"), zc.zc_name); 4140 return (zfs_standard_error_fmt(hdl, errno, errbuf)); 4141 } 4142 if (zc.zc_nvlist_dst_size == 0) 4143 break; 4144 4145 while (zc.zc_nvlist_dst_size > 0) { 4146 if ((ret = func(arg, zua->zu_domain, zua->zu_rid, 4147 zua->zu_space)) != 0) 4148 return (ret); 4149 zua++; 4150 zc.zc_nvlist_dst_size -= sizeof (zfs_useracct_t); 4151 } 4152 } 4153 4154 return (0); 4155} 4156 4157struct holdarg { 4158 nvlist_t *nvl; 4159 const char *snapname; 4160 const char *tag; 4161 boolean_t recursive; 4162 int error; 4163}; 4164 4165static int 4166zfs_hold_one(zfs_handle_t *zhp, void *arg) 4167{ 4168 struct holdarg *ha = arg; 4169 char name[ZFS_MAXNAMELEN]; 4170 int rv = 0; 4171 4172 (void) snprintf(name, sizeof (name), 4173 "%s@%s", zhp->zfs_name, ha->snapname); 4174 4175 if (lzc_exists(name)) 4176 fnvlist_add_string(ha->nvl, name, ha->tag); 4177 4178 if (ha->recursive) 4179 rv = zfs_iter_filesystems(zhp, zfs_hold_one, ha); 4180 zfs_close(zhp); 4181 return (rv); 4182} 4183 4184int 4185zfs_hold(zfs_handle_t *zhp, const char *snapname, const char *tag, 4186 boolean_t recursive, int cleanup_fd) 4187{ 4188 int ret; 4189 struct holdarg ha; 4190 4191 ha.nvl = fnvlist_alloc(); 4192 ha.snapname = snapname; 4193 ha.tag = tag; 4194 ha.recursive = recursive; 4195 (void) zfs_hold_one(zfs_handle_dup(zhp), &ha); 4196 4197 if (nvlist_empty(ha.nvl)) { 4198 char errbuf[1024]; 4199 4200 fnvlist_free(ha.nvl); 4201 ret = ENOENT; 4202 (void) snprintf(errbuf, sizeof (errbuf), 4203 dgettext(TEXT_DOMAIN, 4204 "cannot hold snapshot '%s@%s'"), 4205 zhp->zfs_name, snapname); 4206 (void) zfs_standard_error(zhp->zfs_hdl, ret, errbuf); 4207 return (ret); 4208 } 4209 4210 ret = zfs_hold_nvl(zhp, cleanup_fd, ha.nvl); 4211 fnvlist_free(ha.nvl); 4212 4213 return (ret); 4214} 4215 4216int 4217zfs_hold_nvl(zfs_handle_t *zhp, int cleanup_fd, nvlist_t *holds) 4218{ 4219 int ret; 4220 nvlist_t *errors; 4221 libzfs_handle_t *hdl = zhp->zfs_hdl; 4222 char errbuf[1024]; 4223 nvpair_t *elem; 4224 4225 errors = NULL; 4226 ret = lzc_hold(holds, cleanup_fd, &errors); 4227 4228 if (ret == 0) { 4229 /* There may be errors even in the success case. */ 4230 fnvlist_free(errors); 4231 return (0); 4232 } 4233 4234 if (nvlist_empty(errors)) { 4235 /* no hold-specific errors */ 4236 (void) snprintf(errbuf, sizeof (errbuf), 4237 dgettext(TEXT_DOMAIN, "cannot hold")); 4238 switch (ret) { 4239 case ENOTSUP: 4240 zfs_error_aux(hdl, dgettext(TEXT_DOMAIN, 4241 "pool must be upgraded")); 4242 (void) zfs_error(hdl, EZFS_BADVERSION, errbuf); 4243 break; 4244 case EINVAL: 4245 (void) zfs_error(hdl, EZFS_BADTYPE, errbuf); 4246 break; 4247 default: 4248 (void) zfs_standard_error(hdl, ret, errbuf); 4249 } 4250 } 4251 4252 for (elem = nvlist_next_nvpair(errors, NULL); 4253 elem != NULL; 4254 elem = nvlist_next_nvpair(errors, elem)) { 4255 (void) snprintf(errbuf, sizeof (errbuf), 4256 dgettext(TEXT_DOMAIN, 4257 "cannot hold snapshot '%s'"), nvpair_name(elem)); 4258 switch (fnvpair_value_int32(elem)) { 4259 case E2BIG: 4260 /* 4261 * Temporary tags wind up having the ds object id 4262 * prepended. So even if we passed the length check 4263 * above, it's still possible for the tag to wind 4264 * up being slightly too long. 4265 */ 4266 (void) zfs_error(hdl, EZFS_TAGTOOLONG, errbuf); 4267 break; 4268 case EINVAL: 4269 (void) zfs_error(hdl, EZFS_BADTYPE, errbuf); 4270 break; 4271 case EEXIST: 4272 (void) zfs_error(hdl, EZFS_REFTAG_HOLD, errbuf); 4273 break; 4274 default: 4275 (void) zfs_standard_error(hdl, 4276 fnvpair_value_int32(elem), errbuf); 4277 } 4278 } 4279 4280 fnvlist_free(errors); 4281 return (ret); 4282} 4283 4284static int 4285zfs_release_one(zfs_handle_t *zhp, void *arg) 4286{ 4287 struct holdarg *ha = arg; 4288 char name[ZFS_MAXNAMELEN]; 4289 int rv = 0; 4290 nvlist_t *existing_holds; 4291 4292 (void) snprintf(name, sizeof (name), 4293 "%s@%s", zhp->zfs_name, ha->snapname); 4294 4295 if (lzc_get_holds(name, &existing_holds) != 0) { 4296 ha->error = ENOENT; 4297 } else if (!nvlist_exists(existing_holds, ha->tag)) { 4298 ha->error = ESRCH; 4299 } else { 4300 nvlist_t *torelease = fnvlist_alloc(); 4301 fnvlist_add_boolean(torelease, ha->tag); 4302 fnvlist_add_nvlist(ha->nvl, name, torelease); 4303 fnvlist_free(torelease); 4304 } 4305 4306 if (ha->recursive) 4307 rv = zfs_iter_filesystems(zhp, zfs_release_one, ha); 4308 zfs_close(zhp); 4309 return (rv); 4310} 4311 4312int 4313zfs_release(zfs_handle_t *zhp, const char *snapname, const char *tag, 4314 boolean_t recursive) 4315{ 4316 int ret; 4317 struct holdarg ha; 4318 nvlist_t *errors = NULL; 4319 nvpair_t *elem; 4320 libzfs_handle_t *hdl = zhp->zfs_hdl; 4321 char errbuf[1024]; 4322 4323 ha.nvl = fnvlist_alloc(); 4324 ha.snapname = snapname; 4325 ha.tag = tag; 4326 ha.recursive = recursive; 4327 ha.error = 0; 4328 (void) zfs_release_one(zfs_handle_dup(zhp), &ha); 4329 4330 if (nvlist_empty(ha.nvl)) { 4331 fnvlist_free(ha.nvl); 4332 ret = ha.error; 4333 (void) snprintf(errbuf, sizeof (errbuf), 4334 dgettext(TEXT_DOMAIN, 4335 "cannot release hold from snapshot '%s@%s'"), 4336 zhp->zfs_name, snapname); 4337 if (ret == ESRCH) { 4338 (void) zfs_error(hdl, EZFS_REFTAG_RELE, errbuf); 4339 } else { 4340 (void) zfs_standard_error(hdl, ret, errbuf); 4341 } 4342 return (ret); 4343 } 4344 4345 ret = lzc_release(ha.nvl, &errors); 4346 fnvlist_free(ha.nvl); 4347 4348 if (ret == 0) { 4349 /* There may be errors even in the success case. */ 4350 fnvlist_free(errors); 4351 return (0); 4352 } 4353 4354 if (nvlist_empty(errors)) { 4355 /* no hold-specific errors */ 4356 (void) snprintf(errbuf, sizeof (errbuf), dgettext(TEXT_DOMAIN, 4357 "cannot release")); 4358 switch (errno) { 4359 case ENOTSUP: 4360 zfs_error_aux(hdl, dgettext(TEXT_DOMAIN, 4361 "pool must be upgraded")); 4362 (void) zfs_error(hdl, EZFS_BADVERSION, errbuf); 4363 break; 4364 default: 4365 (void) zfs_standard_error_fmt(hdl, errno, errbuf); 4366 } 4367 } 4368 4369 for (elem = nvlist_next_nvpair(errors, NULL); 4370 elem != NULL; 4371 elem = nvlist_next_nvpair(errors, elem)) { 4372 (void) snprintf(errbuf, sizeof (errbuf), 4373 dgettext(TEXT_DOMAIN, 4374 "cannot release hold from snapshot '%s'"), 4375 nvpair_name(elem)); 4376 switch (fnvpair_value_int32(elem)) { 4377 case ESRCH: 4378 (void) zfs_error(hdl, EZFS_REFTAG_RELE, errbuf); 4379 break; 4380 case EINVAL: 4381 (void) zfs_error(hdl, EZFS_BADTYPE, errbuf); 4382 break; 4383 default: 4384 (void) zfs_standard_error_fmt(hdl, 4385 fnvpair_value_int32(elem), errbuf); 4386 } 4387 } 4388 4389 fnvlist_free(errors); 4390 return (ret); 4391} 4392 4393int 4394zfs_get_fsacl(zfs_handle_t *zhp, nvlist_t **nvl) 4395{ 4396 zfs_cmd_t zc = { 0 }; 4397 libzfs_handle_t *hdl = zhp->zfs_hdl; 4398 int nvsz = 2048; 4399 void *nvbuf; 4400 int err = 0; 4401 char errbuf[1024]; 4402 4403 assert(zhp->zfs_type == ZFS_TYPE_VOLUME || 4404 zhp->zfs_type == ZFS_TYPE_FILESYSTEM); 4405 4406tryagain: 4407 4408 nvbuf = malloc(nvsz); 4409 if (nvbuf == NULL) { 4410 err = (zfs_error(hdl, EZFS_NOMEM, strerror(errno))); 4411 goto out; 4412 } 4413 4414 zc.zc_nvlist_dst_size = nvsz; 4415 zc.zc_nvlist_dst = (uintptr_t)nvbuf; 4416 4417 (void) strlcpy(zc.zc_name, zhp->zfs_name, ZFS_MAXNAMELEN); 4418 4419 if (ioctl(hdl->libzfs_fd, ZFS_IOC_GET_FSACL, &zc) != 0) { 4420 (void) snprintf(errbuf, sizeof (errbuf), 4421 dgettext(TEXT_DOMAIN, "cannot get permissions on '%s'"), 4422 zc.zc_name); 4423 switch (errno) { 4424 case ENOMEM: 4425 free(nvbuf); 4426 nvsz = zc.zc_nvlist_dst_size; 4427 goto tryagain; 4428 4429 case ENOTSUP: 4430 zfs_error_aux(hdl, dgettext(TEXT_DOMAIN, 4431 "pool must be upgraded")); 4432 err = zfs_error(hdl, EZFS_BADVERSION, errbuf); 4433 break; 4434 case EINVAL: 4435 err = zfs_error(hdl, EZFS_BADTYPE, errbuf); 4436 break; 4437 case ENOENT: 4438 err = zfs_error(hdl, EZFS_NOENT, errbuf); 4439 break; 4440 default: 4441 err = zfs_standard_error_fmt(hdl, errno, errbuf); 4442 break; 4443 } 4444 } else { 4445 /* success */ 4446 int rc = nvlist_unpack(nvbuf, zc.zc_nvlist_dst_size, nvl, 0); 4447 if (rc) { 4448 (void) snprintf(errbuf, sizeof (errbuf), dgettext( 4449 TEXT_DOMAIN, "cannot get permissions on '%s'"), 4450 zc.zc_name); 4451 err = zfs_standard_error_fmt(hdl, rc, errbuf); 4452 } 4453 } 4454 4455 free(nvbuf); 4456out: 4457 return (err); 4458} 4459 4460int 4461zfs_set_fsacl(zfs_handle_t *zhp, boolean_t un, nvlist_t *nvl) 4462{ 4463 zfs_cmd_t zc = { 0 }; 4464 libzfs_handle_t *hdl = zhp->zfs_hdl; 4465 char *nvbuf; 4466 char errbuf[1024]; 4467 size_t nvsz; 4468 int err; 4469 4470 assert(zhp->zfs_type == ZFS_TYPE_VOLUME || 4471 zhp->zfs_type == ZFS_TYPE_FILESYSTEM); 4472 4473 err = nvlist_size(nvl, &nvsz, NV_ENCODE_NATIVE); 4474 assert(err == 0); 4475 4476 nvbuf = malloc(nvsz); 4477 4478 err = nvlist_pack(nvl, &nvbuf, &nvsz, NV_ENCODE_NATIVE, 0); 4479 assert(err == 0); 4480 4481 zc.zc_nvlist_src_size = nvsz; 4482 zc.zc_nvlist_src = (uintptr_t)nvbuf; 4483 zc.zc_perm_action = un; 4484 4485 (void) strlcpy(zc.zc_name, zhp->zfs_name, sizeof (zc.zc_name)); 4486 4487 if (zfs_ioctl(hdl, ZFS_IOC_SET_FSACL, &zc) != 0) { 4488 (void) snprintf(errbuf, sizeof (errbuf), 4489 dgettext(TEXT_DOMAIN, "cannot set permissions on '%s'"), 4490 zc.zc_name); 4491 switch (errno) { 4492 case ENOTSUP: 4493 zfs_error_aux(hdl, dgettext(TEXT_DOMAIN, 4494 "pool must be upgraded")); 4495 err = zfs_error(hdl, EZFS_BADVERSION, errbuf); 4496 break; 4497 case EINVAL: 4498 err = zfs_error(hdl, EZFS_BADTYPE, errbuf); 4499 break; 4500 case ENOENT: 4501 err = zfs_error(hdl, EZFS_NOENT, errbuf); 4502 break; 4503 default: 4504 err = zfs_standard_error_fmt(hdl, errno, errbuf); 4505 break; 4506 } 4507 } 4508 4509 free(nvbuf); 4510 4511 return (err); 4512} 4513 4514int 4515zfs_get_holds(zfs_handle_t *zhp, nvlist_t **nvl) 4516{ 4517 int err; 4518 char errbuf[1024]; 4519 4520 err = lzc_get_holds(zhp->zfs_name, nvl); 4521 4522 if (err != 0) { 4523 libzfs_handle_t *hdl = zhp->zfs_hdl; 4524 4525 (void) snprintf(errbuf, sizeof (errbuf), 4526 dgettext(TEXT_DOMAIN, "cannot get holds for '%s'"), 4527 zhp->zfs_name); 4528 switch (err) { 4529 case ENOTSUP: 4530 zfs_error_aux(hdl, dgettext(TEXT_DOMAIN, 4531 "pool must be upgraded")); 4532 err = zfs_error(hdl, EZFS_BADVERSION, errbuf); 4533 break; 4534 case EINVAL: 4535 err = zfs_error(hdl, EZFS_BADTYPE, errbuf); 4536 break; 4537 case ENOENT: 4538 err = zfs_error(hdl, EZFS_NOENT, errbuf); 4539 break; 4540 default: 4541 err = zfs_standard_error_fmt(hdl, errno, errbuf); 4542 break; 4543 } 4544 } 4545 4546 return (err); 4547} 4548 4549/* 4550 * Convert the zvol's volume size to an appropriate reservation. 4551 * Note: If this routine is updated, it is necessary to update the ZFS test 4552 * suite's shell version in reservation.kshlib. 4553 */ 4554uint64_t 4555zvol_volsize_to_reservation(uint64_t volsize, nvlist_t *props) 4556{ 4557 uint64_t numdb; 4558 uint64_t nblocks, volblocksize; 4559 int ncopies; 4560 char *strval; 4561 4562 if (nvlist_lookup_string(props, 4563 zfs_prop_to_name(ZFS_PROP_COPIES), &strval) == 0) 4564 ncopies = atoi(strval); 4565 else 4566 ncopies = 1; 4567 if (nvlist_lookup_uint64(props, 4568 zfs_prop_to_name(ZFS_PROP_VOLBLOCKSIZE), 4569 &volblocksize) != 0) 4570 volblocksize = ZVOL_DEFAULT_BLOCKSIZE; 4571 nblocks = volsize/volblocksize; 4572 /* start with metadnode L0-L6 */ 4573 numdb = 7; 4574 /* calculate number of indirects */ 4575 while (nblocks > 1) { 4576 nblocks += DNODES_PER_LEVEL - 1; 4577 nblocks /= DNODES_PER_LEVEL; 4578 numdb += nblocks; 4579 } 4580 numdb *= MIN(SPA_DVAS_PER_BP, ncopies + 1); 4581 volsize *= ncopies; 4582 /* 4583 * this is exactly DN_MAX_INDBLKSHIFT when metadata isn't 4584 * compressed, but in practice they compress down to about 4585 * 1100 bytes 4586 */ 4587 numdb *= 1ULL << DN_MAX_INDBLKSHIFT; 4588 volsize += numdb; 4589 return (volsize); 4590} 4591 4592/* 4593 * Attach/detach the given filesystem to/from the given jail. 4594 */ 4595int 4596zfs_jail(zfs_handle_t *zhp, int jailid, int attach) 4597{ 4598 libzfs_handle_t *hdl = zhp->zfs_hdl; 4599 zfs_cmd_t zc = { 0 }; 4600 char errbuf[1024]; 4601 unsigned long cmd; 4602 int ret; 4603 4604 if (attach) { 4605 (void) snprintf(errbuf, sizeof (errbuf), 4606 dgettext(TEXT_DOMAIN, "cannot jail '%s'"), zhp->zfs_name); 4607 } else { 4608 (void) snprintf(errbuf, sizeof (errbuf), 4609 dgettext(TEXT_DOMAIN, "cannot unjail '%s'"), zhp->zfs_name); 4610 } 4611 4612 switch (zhp->zfs_type) { 4613 case ZFS_TYPE_VOLUME: 4614 zfs_error_aux(hdl, dgettext(TEXT_DOMAIN, 4615 "volumes can not be jailed")); 4616 return (zfs_error(hdl, EZFS_BADTYPE, errbuf)); 4617 case ZFS_TYPE_SNAPSHOT: 4618 zfs_error_aux(hdl, dgettext(TEXT_DOMAIN, 4619 "snapshots can not be jailed")); 4620 return (zfs_error(hdl, EZFS_BADTYPE, errbuf)); 4621 } 4622 assert(zhp->zfs_type == ZFS_TYPE_FILESYSTEM); 4623 4624 (void) strlcpy(zc.zc_name, zhp->zfs_name, sizeof (zc.zc_name)); 4625 zc.zc_objset_type = DMU_OST_ZFS; 4626 zc.zc_jailid = jailid; 4627 4628 cmd = attach ? ZFS_IOC_JAIL : ZFS_IOC_UNJAIL; 4629 if ((ret = ioctl(hdl->libzfs_fd, cmd, &zc)) != 0) 4630 zfs_standard_error(hdl, errno, errbuf); 4631 4632 return (ret); 4633} 4634