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) 2018, Joyent, Inc. All rights reserved. 25 * Copyright (c) 2011, 2016 by Delphix. All rights reserved. 26 * Copyright (c) 2012 DEY Storage Systems, Inc. All rights reserved. 27 * Copyright (c) 2011-2012 Pawel Jakub Dawidek. All rights reserved. 28 * Copyright (c) 2013 Martin Matuska. All rights reserved. 29 * Copyright (c) 2013 Steven Hartland. All rights reserved. 30 * Copyright (c) 2014 Integros [integros.com] 31 * Copyright 2016 Igor Kozhukhov <ikozhukhov@gmail.com> 32 * Copyright 2017 Nexenta Systems, Inc. 33 * Copyright 2017 RackTop Systems. 34 */ 35 36#include <ctype.h> 37#include <errno.h> 38#include <libintl.h> 39#include <math.h> 40#include <stdio.h> 41#include <stdlib.h> 42#include <strings.h> 43#include <unistd.h> 44#include <stddef.h> 45#include <zone.h> 46#include <fcntl.h> 47#include <sys/mntent.h> 48#include <sys/mount.h> 49#include <priv.h> 50#include <pwd.h> 51#include <grp.h> 52#include <stddef.h> 53#ifdef illumos 54#include <idmap.h> 55#endif 56 57#include <sys/dnode.h> 58#include <sys/spa.h> 59#include <sys/zap.h> 60#include <sys/misc.h> 61#include <libzfs.h> 62 63#include "zfs_namecheck.h" 64#include "zfs_prop.h" 65#include "libzfs_impl.h" 66#include "zfs_deleg.h" 67 68static int userquota_propname_decode(const char *propname, boolean_t zoned, 69 zfs_userquota_prop_t *typep, char *domain, int domainlen, uint64_t *ridp); 70 71/* 72 * Given a single type (not a mask of types), return the type in a human 73 * readable form. 74 */ 75const char * 76zfs_type_to_name(zfs_type_t type) 77{ 78 switch (type) { 79 case ZFS_TYPE_FILESYSTEM: 80 return (dgettext(TEXT_DOMAIN, "filesystem")); 81 case ZFS_TYPE_SNAPSHOT: 82 return (dgettext(TEXT_DOMAIN, "snapshot")); 83 case ZFS_TYPE_VOLUME: 84 return (dgettext(TEXT_DOMAIN, "volume")); 85 case ZFS_TYPE_POOL: 86 return (dgettext(TEXT_DOMAIN, "pool")); 87 case ZFS_TYPE_BOOKMARK: 88 return (dgettext(TEXT_DOMAIN, "bookmark")); 89 default: 90 assert(!"unhandled zfs_type_t"); 91 } 92 93 return (NULL); 94} 95 96/* 97 * Validate a ZFS path. This is used even before trying to open the dataset, to 98 * provide a more meaningful error message. We call zfs_error_aux() to 99 * explain exactly why the name was not valid. 100 */ 101int 102zfs_validate_name(libzfs_handle_t *hdl, const char *path, int type, 103 boolean_t modifying) 104{ 105 namecheck_err_t why; 106 char what; 107 108 if (entity_namecheck(path, &why, &what) != 0) { 109 if (hdl != NULL) { 110 switch (why) { 111 case NAME_ERR_TOOLONG: 112 zfs_error_aux(hdl, dgettext(TEXT_DOMAIN, 113 "name is too long")); 114 break; 115 116 case NAME_ERR_LEADING_SLASH: 117 zfs_error_aux(hdl, dgettext(TEXT_DOMAIN, 118 "leading slash in name")); 119 break; 120 121 case NAME_ERR_EMPTY_COMPONENT: 122 zfs_error_aux(hdl, dgettext(TEXT_DOMAIN, 123 "empty component in name")); 124 break; 125 126 case NAME_ERR_TRAILING_SLASH: 127 zfs_error_aux(hdl, dgettext(TEXT_DOMAIN, 128 "trailing slash in name")); 129 break; 130 131 case NAME_ERR_INVALCHAR: 132 zfs_error_aux(hdl, 133 dgettext(TEXT_DOMAIN, "invalid character " 134 "'%c' in name"), what); 135 break; 136 137 case NAME_ERR_MULTIPLE_DELIMITERS: 138 zfs_error_aux(hdl, dgettext(TEXT_DOMAIN, 139 "multiple '@' and/or '#' delimiters in " 140 "name")); 141 break; 142 143 case NAME_ERR_NOLETTER: 144 zfs_error_aux(hdl, dgettext(TEXT_DOMAIN, 145 "pool doesn't begin with a letter")); 146 break; 147 148 case NAME_ERR_RESERVED: 149 zfs_error_aux(hdl, dgettext(TEXT_DOMAIN, 150 "name is reserved")); 151 break; 152 153 case NAME_ERR_DISKLIKE: 154 zfs_error_aux(hdl, dgettext(TEXT_DOMAIN, 155 "reserved disk name")); 156 break; 157 158 default: 159 zfs_error_aux(hdl, dgettext(TEXT_DOMAIN, 160 "(%d) not defined"), why); 161 break; 162 } 163 } 164 165 return (0); 166 } 167 168 if (!(type & ZFS_TYPE_SNAPSHOT) && strchr(path, '@') != NULL) { 169 if (hdl != NULL) 170 zfs_error_aux(hdl, dgettext(TEXT_DOMAIN, 171 "snapshot delimiter '@' is not expected here")); 172 return (0); 173 } 174 175 if (type == ZFS_TYPE_SNAPSHOT && strchr(path, '@') == NULL) { 176 if (hdl != NULL) 177 zfs_error_aux(hdl, dgettext(TEXT_DOMAIN, 178 "missing '@' delimiter in snapshot name")); 179 return (0); 180 } 181 182 if (!(type & ZFS_TYPE_BOOKMARK) && strchr(path, '#') != NULL) { 183 if (hdl != NULL) 184 zfs_error_aux(hdl, dgettext(TEXT_DOMAIN, 185 "bookmark delimiter '#' is not expected here")); 186 return (0); 187 } 188 189 if (type == ZFS_TYPE_BOOKMARK && strchr(path, '#') == NULL) { 190 if (hdl != NULL) 191 zfs_error_aux(hdl, dgettext(TEXT_DOMAIN, 192 "missing '#' delimiter in bookmark name")); 193 return (0); 194 } 195 196 if (modifying && strchr(path, '%') != NULL) { 197 if (hdl != NULL) 198 zfs_error_aux(hdl, dgettext(TEXT_DOMAIN, 199 "invalid character %c in name"), '%'); 200 return (0); 201 } 202 203 return (-1); 204} 205 206int 207zfs_name_valid(const char *name, zfs_type_t type) 208{ 209 if (type == ZFS_TYPE_POOL) 210 return (zpool_name_valid(NULL, B_FALSE, name)); 211 return (zfs_validate_name(NULL, name, type, B_FALSE)); 212} 213 214/* 215 * This function takes the raw DSL properties, and filters out the user-defined 216 * properties into a separate nvlist. 217 */ 218static nvlist_t * 219process_user_props(zfs_handle_t *zhp, nvlist_t *props) 220{ 221 libzfs_handle_t *hdl = zhp->zfs_hdl; 222 nvpair_t *elem; 223 nvlist_t *propval; 224 nvlist_t *nvl; 225 226 if (nvlist_alloc(&nvl, NV_UNIQUE_NAME, 0) != 0) { 227 (void) no_memory(hdl); 228 return (NULL); 229 } 230 231 elem = NULL; 232 while ((elem = nvlist_next_nvpair(props, elem)) != NULL) { 233 if (!zfs_prop_user(nvpair_name(elem))) 234 continue; 235 236 verify(nvpair_value_nvlist(elem, &propval) == 0); 237 if (nvlist_add_nvlist(nvl, nvpair_name(elem), propval) != 0) { 238 nvlist_free(nvl); 239 (void) no_memory(hdl); 240 return (NULL); 241 } 242 } 243 244 return (nvl); 245} 246 247static zpool_handle_t * 248zpool_add_handle(zfs_handle_t *zhp, const char *pool_name) 249{ 250 libzfs_handle_t *hdl = zhp->zfs_hdl; 251 zpool_handle_t *zph; 252 253 if ((zph = zpool_open_canfail(hdl, pool_name)) != NULL) { 254 if (hdl->libzfs_pool_handles != NULL) 255 zph->zpool_next = hdl->libzfs_pool_handles; 256 hdl->libzfs_pool_handles = zph; 257 } 258 return (zph); 259} 260 261static zpool_handle_t * 262zpool_find_handle(zfs_handle_t *zhp, const char *pool_name, int len) 263{ 264 libzfs_handle_t *hdl = zhp->zfs_hdl; 265 zpool_handle_t *zph = hdl->libzfs_pool_handles; 266 267 while ((zph != NULL) && 268 (strncmp(pool_name, zpool_get_name(zph), len) != 0)) 269 zph = zph->zpool_next; 270 return (zph); 271} 272 273/* 274 * Returns a handle to the pool that contains the provided dataset. 275 * If a handle to that pool already exists then that handle is returned. 276 * Otherwise, a new handle is created and added to the list of handles. 277 */ 278static zpool_handle_t * 279zpool_handle(zfs_handle_t *zhp) 280{ 281 char *pool_name; 282 int len; 283 zpool_handle_t *zph; 284 285 len = strcspn(zhp->zfs_name, "/@#") + 1; 286 pool_name = zfs_alloc(zhp->zfs_hdl, len); 287 (void) strlcpy(pool_name, zhp->zfs_name, len); 288 289 zph = zpool_find_handle(zhp, pool_name, len); 290 if (zph == NULL) 291 zph = zpool_add_handle(zhp, pool_name); 292 293 free(pool_name); 294 return (zph); 295} 296 297void 298zpool_free_handles(libzfs_handle_t *hdl) 299{ 300 zpool_handle_t *next, *zph = hdl->libzfs_pool_handles; 301 302 while (zph != NULL) { 303 next = zph->zpool_next; 304 zpool_close(zph); 305 zph = next; 306 } 307 hdl->libzfs_pool_handles = NULL; 308} 309 310/* 311 * Utility function to gather stats (objset and zpl) for the given object. 312 */ 313static int 314get_stats_ioctl(zfs_handle_t *zhp, zfs_cmd_t *zc) 315{ 316 libzfs_handle_t *hdl = zhp->zfs_hdl; 317 318 (void) strlcpy(zc->zc_name, zhp->zfs_name, sizeof (zc->zc_name)); 319 320 while (ioctl(hdl->libzfs_fd, ZFS_IOC_OBJSET_STATS, zc) != 0) { 321 if (errno == ENOMEM) { 322 if (zcmd_expand_dst_nvlist(hdl, zc) != 0) { 323 return (-1); 324 } 325 } else { 326 return (-1); 327 } 328 } 329 return (0); 330} 331 332/* 333 * Utility function to get the received properties of the given object. 334 */ 335static int 336get_recvd_props_ioctl(zfs_handle_t *zhp) 337{ 338 libzfs_handle_t *hdl = zhp->zfs_hdl; 339 nvlist_t *recvdprops; 340 zfs_cmd_t zc = { 0 }; 341 int err; 342 343 if (zcmd_alloc_dst_nvlist(hdl, &zc, 0) != 0) 344 return (-1); 345 346 (void) strlcpy(zc.zc_name, zhp->zfs_name, sizeof (zc.zc_name)); 347 348 while (ioctl(hdl->libzfs_fd, ZFS_IOC_OBJSET_RECVD_PROPS, &zc) != 0) { 349 if (errno == ENOMEM) { 350 if (zcmd_expand_dst_nvlist(hdl, &zc) != 0) { 351 return (-1); 352 } 353 } else { 354 zcmd_free_nvlists(&zc); 355 return (-1); 356 } 357 } 358 359 err = zcmd_read_dst_nvlist(zhp->zfs_hdl, &zc, &recvdprops); 360 zcmd_free_nvlists(&zc); 361 if (err != 0) 362 return (-1); 363 364 nvlist_free(zhp->zfs_recvd_props); 365 zhp->zfs_recvd_props = recvdprops; 366 367 return (0); 368} 369 370static int 371put_stats_zhdl(zfs_handle_t *zhp, zfs_cmd_t *zc) 372{ 373 nvlist_t *allprops, *userprops; 374 375 zhp->zfs_dmustats = zc->zc_objset_stats; /* structure assignment */ 376 377 if (zcmd_read_dst_nvlist(zhp->zfs_hdl, zc, &allprops) != 0) { 378 return (-1); 379 } 380 381 /* 382 * XXX Why do we store the user props separately, in addition to 383 * storing them in zfs_props? 384 */ 385 if ((userprops = process_user_props(zhp, allprops)) == NULL) { 386 nvlist_free(allprops); 387 return (-1); 388 } 389 390 nvlist_free(zhp->zfs_props); 391 nvlist_free(zhp->zfs_user_props); 392 393 zhp->zfs_props = allprops; 394 zhp->zfs_user_props = userprops; 395 396 return (0); 397} 398 399static int 400get_stats(zfs_handle_t *zhp) 401{ 402 int rc = 0; 403 zfs_cmd_t zc = { 0 }; 404 405 if (zcmd_alloc_dst_nvlist(zhp->zfs_hdl, &zc, 0) != 0) 406 return (-1); 407 if (get_stats_ioctl(zhp, &zc) != 0) 408 rc = -1; 409 else if (put_stats_zhdl(zhp, &zc) != 0) 410 rc = -1; 411 zcmd_free_nvlists(&zc); 412 return (rc); 413} 414 415/* 416 * Refresh the properties currently stored in the handle. 417 */ 418void 419zfs_refresh_properties(zfs_handle_t *zhp) 420{ 421 (void) get_stats(zhp); 422} 423 424/* 425 * Makes a handle from the given dataset name. Used by zfs_open() and 426 * zfs_iter_* to create child handles on the fly. 427 */ 428static int 429make_dataset_handle_common(zfs_handle_t *zhp, zfs_cmd_t *zc) 430{ 431 if (put_stats_zhdl(zhp, zc) != 0) 432 return (-1); 433 434 /* 435 * We've managed to open the dataset and gather statistics. Determine 436 * the high-level type. 437 */ 438 if (zhp->zfs_dmustats.dds_type == DMU_OST_ZVOL) 439 zhp->zfs_head_type = ZFS_TYPE_VOLUME; 440 else if (zhp->zfs_dmustats.dds_type == DMU_OST_ZFS) 441 zhp->zfs_head_type = ZFS_TYPE_FILESYSTEM; 442 else 443 abort(); 444 445 if (zhp->zfs_dmustats.dds_is_snapshot) 446 zhp->zfs_type = ZFS_TYPE_SNAPSHOT; 447 else if (zhp->zfs_dmustats.dds_type == DMU_OST_ZVOL) 448 zhp->zfs_type = ZFS_TYPE_VOLUME; 449 else if (zhp->zfs_dmustats.dds_type == DMU_OST_ZFS) 450 zhp->zfs_type = ZFS_TYPE_FILESYSTEM; 451 else 452 abort(); /* we should never see any other types */ 453 454 if ((zhp->zpool_hdl = zpool_handle(zhp)) == NULL) 455 return (-1); 456 457 return (0); 458} 459 460zfs_handle_t * 461make_dataset_handle(libzfs_handle_t *hdl, const char *path) 462{ 463 zfs_cmd_t zc = { 0 }; 464 465 zfs_handle_t *zhp = calloc(sizeof (zfs_handle_t), 1); 466 467 if (zhp == NULL) 468 return (NULL); 469 470 zhp->zfs_hdl = hdl; 471 (void) strlcpy(zhp->zfs_name, path, sizeof (zhp->zfs_name)); 472 if (zcmd_alloc_dst_nvlist(hdl, &zc, 0) != 0) { 473 free(zhp); 474 return (NULL); 475 } 476 if (get_stats_ioctl(zhp, &zc) == -1) { 477 zcmd_free_nvlists(&zc); 478 free(zhp); 479 return (NULL); 480 } 481 if (make_dataset_handle_common(zhp, &zc) == -1) { 482 free(zhp); 483 zhp = NULL; 484 } 485 zcmd_free_nvlists(&zc); 486 return (zhp); 487} 488 489zfs_handle_t * 490make_dataset_handle_zc(libzfs_handle_t *hdl, zfs_cmd_t *zc) 491{ 492 zfs_handle_t *zhp = calloc(sizeof (zfs_handle_t), 1); 493 494 if (zhp == NULL) 495 return (NULL); 496 497 zhp->zfs_hdl = hdl; 498 (void) strlcpy(zhp->zfs_name, zc->zc_name, sizeof (zhp->zfs_name)); 499 if (make_dataset_handle_common(zhp, zc) == -1) { 500 free(zhp); 501 return (NULL); 502 } 503 return (zhp); 504} 505 506zfs_handle_t * 507make_dataset_simple_handle_zc(zfs_handle_t *pzhp, zfs_cmd_t *zc) 508{ 509 zfs_handle_t *zhp = calloc(sizeof (zfs_handle_t), 1); 510 511 if (zhp == NULL) 512 return (NULL); 513 514 zhp->zfs_hdl = pzhp->zfs_hdl; 515 (void) strlcpy(zhp->zfs_name, zc->zc_name, sizeof (zhp->zfs_name)); 516 zhp->zfs_head_type = pzhp->zfs_type; 517 zhp->zfs_type = ZFS_TYPE_SNAPSHOT; 518 zhp->zpool_hdl = zpool_handle(zhp); 519 return (zhp); 520} 521 522zfs_handle_t * 523zfs_handle_dup(zfs_handle_t *zhp_orig) 524{ 525 zfs_handle_t *zhp = calloc(sizeof (zfs_handle_t), 1); 526 527 if (zhp == NULL) 528 return (NULL); 529 530 zhp->zfs_hdl = zhp_orig->zfs_hdl; 531 zhp->zpool_hdl = zhp_orig->zpool_hdl; 532 (void) strlcpy(zhp->zfs_name, zhp_orig->zfs_name, 533 sizeof (zhp->zfs_name)); 534 zhp->zfs_type = zhp_orig->zfs_type; 535 zhp->zfs_head_type = zhp_orig->zfs_head_type; 536 zhp->zfs_dmustats = zhp_orig->zfs_dmustats; 537 if (zhp_orig->zfs_props != NULL) { 538 if (nvlist_dup(zhp_orig->zfs_props, &zhp->zfs_props, 0) != 0) { 539 (void) no_memory(zhp->zfs_hdl); 540 zfs_close(zhp); 541 return (NULL); 542 } 543 } 544 if (zhp_orig->zfs_user_props != NULL) { 545 if (nvlist_dup(zhp_orig->zfs_user_props, 546 &zhp->zfs_user_props, 0) != 0) { 547 (void) no_memory(zhp->zfs_hdl); 548 zfs_close(zhp); 549 return (NULL); 550 } 551 } 552 if (zhp_orig->zfs_recvd_props != NULL) { 553 if (nvlist_dup(zhp_orig->zfs_recvd_props, 554 &zhp->zfs_recvd_props, 0)) { 555 (void) no_memory(zhp->zfs_hdl); 556 zfs_close(zhp); 557 return (NULL); 558 } 559 } 560 zhp->zfs_mntcheck = zhp_orig->zfs_mntcheck; 561 if (zhp_orig->zfs_mntopts != NULL) { 562 zhp->zfs_mntopts = zfs_strdup(zhp_orig->zfs_hdl, 563 zhp_orig->zfs_mntopts); 564 } 565 zhp->zfs_props_table = zhp_orig->zfs_props_table; 566 return (zhp); 567} 568 569boolean_t 570zfs_bookmark_exists(const char *path) 571{ 572 nvlist_t *bmarks; 573 nvlist_t *props; 574 char fsname[ZFS_MAX_DATASET_NAME_LEN]; 575 char *bmark_name; 576 char *pound; 577 int err; 578 boolean_t rv; 579 580 581 (void) strlcpy(fsname, path, sizeof (fsname)); 582 pound = strchr(fsname, '#'); 583 if (pound == NULL) 584 return (B_FALSE); 585 586 *pound = '\0'; 587 bmark_name = pound + 1; 588 props = fnvlist_alloc(); 589 err = lzc_get_bookmarks(fsname, props, &bmarks); 590 nvlist_free(props); 591 if (err != 0) { 592 nvlist_free(bmarks); 593 return (B_FALSE); 594 } 595 596 rv = nvlist_exists(bmarks, bmark_name); 597 nvlist_free(bmarks); 598 return (rv); 599} 600 601zfs_handle_t * 602make_bookmark_handle(zfs_handle_t *parent, const char *path, 603 nvlist_t *bmark_props) 604{ 605 zfs_handle_t *zhp = calloc(sizeof (zfs_handle_t), 1); 606 607 if (zhp == NULL) 608 return (NULL); 609 610 /* Fill in the name. */ 611 zhp->zfs_hdl = parent->zfs_hdl; 612 (void) strlcpy(zhp->zfs_name, path, sizeof (zhp->zfs_name)); 613 614 /* Set the property lists. */ 615 if (nvlist_dup(bmark_props, &zhp->zfs_props, 0) != 0) { 616 free(zhp); 617 return (NULL); 618 } 619 620 /* Set the types. */ 621 zhp->zfs_head_type = parent->zfs_head_type; 622 zhp->zfs_type = ZFS_TYPE_BOOKMARK; 623 624 if ((zhp->zpool_hdl = zpool_handle(zhp)) == NULL) { 625 nvlist_free(zhp->zfs_props); 626 free(zhp); 627 return (NULL); 628 } 629 630 return (zhp); 631} 632 633struct zfs_open_bookmarks_cb_data { 634 const char *path; 635 zfs_handle_t *zhp; 636}; 637 638static int 639zfs_open_bookmarks_cb(zfs_handle_t *zhp, void *data) 640{ 641 struct zfs_open_bookmarks_cb_data *dp = data; 642 643 /* 644 * Is it the one we are looking for? 645 */ 646 if (strcmp(dp->path, zfs_get_name(zhp)) == 0) { 647 /* 648 * We found it. Save it and let the caller know we are done. 649 */ 650 dp->zhp = zhp; 651 return (EEXIST); 652 } 653 654 /* 655 * Not found. Close the handle and ask for another one. 656 */ 657 zfs_close(zhp); 658 return (0); 659} 660 661/* 662 * Opens the given snapshot, bookmark, filesystem, or volume. The 'types' 663 * argument is a mask of acceptable types. The function will print an 664 * appropriate error message and return NULL if it can't be opened. 665 */ 666zfs_handle_t * 667zfs_open(libzfs_handle_t *hdl, const char *path, int types) 668{ 669 zfs_handle_t *zhp; 670 char errbuf[1024]; 671 char *bookp; 672 673 (void) snprintf(errbuf, sizeof (errbuf), 674 dgettext(TEXT_DOMAIN, "cannot open '%s'"), path); 675 676 /* 677 * Validate the name before we even try to open it. 678 */ 679 if (!zfs_validate_name(hdl, path, types, B_FALSE)) { 680 (void) zfs_error(hdl, EZFS_INVALIDNAME, errbuf); 681 return (NULL); 682 } 683 684 /* 685 * Bookmarks needs to be handled separately. 686 */ 687 bookp = strchr(path, '#'); 688 if (bookp == NULL) { 689 /* 690 * Try to get stats for the dataset, which will tell us if it 691 * exists. 692 */ 693 errno = 0; 694 if ((zhp = make_dataset_handle(hdl, path)) == NULL) { 695 (void) zfs_standard_error(hdl, errno, errbuf); 696 return (NULL); 697 } 698 } else { 699 char dsname[ZFS_MAX_DATASET_NAME_LEN]; 700 zfs_handle_t *pzhp; 701 struct zfs_open_bookmarks_cb_data cb_data = {path, NULL}; 702 703 /* 704 * We need to cut out '#' and everything after '#' 705 * to get the parent dataset name only. 706 */ 707 assert(bookp - path < sizeof (dsname)); 708 (void) strncpy(dsname, path, bookp - path); 709 dsname[bookp - path] = '\0'; 710 711 /* 712 * Create handle for the parent dataset. 713 */ 714 errno = 0; 715 if ((pzhp = make_dataset_handle(hdl, dsname)) == NULL) { 716 (void) zfs_standard_error(hdl, errno, errbuf); 717 return (NULL); 718 } 719 720 /* 721 * Iterate bookmarks to find the right one. 722 */ 723 errno = 0; 724 if ((zfs_iter_bookmarks(pzhp, zfs_open_bookmarks_cb, 725 &cb_data) == 0) && (cb_data.zhp == NULL)) { 726 (void) zfs_error(hdl, EZFS_NOENT, errbuf); 727 zfs_close(pzhp); 728 return (NULL); 729 } 730 if (cb_data.zhp == NULL) { 731 (void) zfs_standard_error(hdl, errno, errbuf); 732 zfs_close(pzhp); 733 return (NULL); 734 } 735 zhp = cb_data.zhp; 736 737 /* 738 * Cleanup. 739 */ 740 zfs_close(pzhp); 741 } 742 743 if (zhp == NULL) { 744 char *at = strchr(path, '@'); 745 746 if (at != NULL) 747 *at = '\0'; 748 errno = 0; 749 if ((zhp = make_dataset_handle(hdl, path)) == NULL) { 750 (void) zfs_standard_error(hdl, errno, errbuf); 751 return (NULL); 752 } 753 if (at != NULL) 754 *at = '@'; 755 (void) strlcpy(zhp->zfs_name, path, sizeof (zhp->zfs_name)); 756 zhp->zfs_type = ZFS_TYPE_SNAPSHOT; 757 } 758 759 if (!(types & zhp->zfs_type)) { 760 (void) zfs_error(hdl, EZFS_BADTYPE, errbuf); 761 zfs_close(zhp); 762 return (NULL); 763 } 764 765 return (zhp); 766} 767 768/* 769 * Release a ZFS handle. Nothing to do but free the associated memory. 770 */ 771void 772zfs_close(zfs_handle_t *zhp) 773{ 774 if (zhp->zfs_mntopts) 775 free(zhp->zfs_mntopts); 776 nvlist_free(zhp->zfs_props); 777 nvlist_free(zhp->zfs_user_props); 778 nvlist_free(zhp->zfs_recvd_props); 779 free(zhp); 780} 781 782typedef struct mnttab_node { 783 struct mnttab mtn_mt; 784 avl_node_t mtn_node; 785} mnttab_node_t; 786 787static int 788libzfs_mnttab_cache_compare(const void *arg1, const void *arg2) 789{ 790 const mnttab_node_t *mtn1 = (const mnttab_node_t *)arg1; 791 const mnttab_node_t *mtn2 = (const mnttab_node_t *)arg2; 792 int rv; 793 794 rv = strcmp(mtn1->mtn_mt.mnt_special, mtn2->mtn_mt.mnt_special); 795 796 return (AVL_ISIGN(rv)); 797} 798 799void 800libzfs_mnttab_init(libzfs_handle_t *hdl) 801{ 802 pthread_mutex_init(&hdl->libzfs_mnttab_cache_lock, NULL); 803 assert(avl_numnodes(&hdl->libzfs_mnttab_cache) == 0); 804 avl_create(&hdl->libzfs_mnttab_cache, libzfs_mnttab_cache_compare, 805 sizeof (mnttab_node_t), offsetof(mnttab_node_t, mtn_node)); 806} 807 808void 809libzfs_mnttab_update(libzfs_handle_t *hdl) 810{ 811 struct mnttab entry; 812 813 rewind(hdl->libzfs_mnttab); 814 while (getmntent(hdl->libzfs_mnttab, &entry) == 0) { 815 mnttab_node_t *mtn; 816 817 if (strcmp(entry.mnt_fstype, MNTTYPE_ZFS) != 0) 818 continue; 819 mtn = zfs_alloc(hdl, sizeof (mnttab_node_t)); 820 mtn->mtn_mt.mnt_special = zfs_strdup(hdl, entry.mnt_special); 821 mtn->mtn_mt.mnt_mountp = zfs_strdup(hdl, entry.mnt_mountp); 822 mtn->mtn_mt.mnt_fstype = zfs_strdup(hdl, entry.mnt_fstype); 823 mtn->mtn_mt.mnt_mntopts = zfs_strdup(hdl, entry.mnt_mntopts); 824 avl_add(&hdl->libzfs_mnttab_cache, mtn); 825 } 826} 827 828void 829libzfs_mnttab_fini(libzfs_handle_t *hdl) 830{ 831 void *cookie = NULL; 832 mnttab_node_t *mtn; 833 834 while ((mtn = avl_destroy_nodes(&hdl->libzfs_mnttab_cache, &cookie)) 835 != NULL) { 836 free(mtn->mtn_mt.mnt_special); 837 free(mtn->mtn_mt.mnt_mountp); 838 free(mtn->mtn_mt.mnt_fstype); 839 free(mtn->mtn_mt.mnt_mntopts); 840 free(mtn); 841 } 842 avl_destroy(&hdl->libzfs_mnttab_cache); 843 (void) pthread_mutex_destroy(&hdl->libzfs_mnttab_cache_lock); 844} 845 846void 847libzfs_mnttab_cache(libzfs_handle_t *hdl, boolean_t enable) 848{ 849 hdl->libzfs_mnttab_enable = enable; 850} 851 852int 853libzfs_mnttab_find(libzfs_handle_t *hdl, const char *fsname, 854 struct mnttab *entry) 855{ 856 mnttab_node_t find; 857 mnttab_node_t *mtn; 858 int ret = ENOENT; 859 860 if (!hdl->libzfs_mnttab_enable) { 861 struct mnttab srch = { 0 }; 862 863 if (avl_numnodes(&hdl->libzfs_mnttab_cache)) 864 libzfs_mnttab_fini(hdl); 865 rewind(hdl->libzfs_mnttab); 866 srch.mnt_special = (char *)fsname; 867 srch.mnt_fstype = MNTTYPE_ZFS; 868 if (getmntany(hdl->libzfs_mnttab, entry, &srch) == 0) 869 return (0); 870 else 871 return (ENOENT); 872 } 873 874 pthread_mutex_lock(&hdl->libzfs_mnttab_cache_lock); 875 if (avl_numnodes(&hdl->libzfs_mnttab_cache) == 0) 876 libzfs_mnttab_update(hdl); 877 878 find.mtn_mt.mnt_special = (char *)fsname; 879 mtn = avl_find(&hdl->libzfs_mnttab_cache, &find, NULL); 880 if (mtn) { 881 *entry = mtn->mtn_mt; 882 ret = 0; 883 } 884 pthread_mutex_unlock(&hdl->libzfs_mnttab_cache_lock); 885 return (ret); 886} 887 888void 889libzfs_mnttab_add(libzfs_handle_t *hdl, const char *special, 890 const char *mountp, const char *mntopts) 891{ 892 mnttab_node_t *mtn; 893 894 pthread_mutex_lock(&hdl->libzfs_mnttab_cache_lock); 895 if (avl_numnodes(&hdl->libzfs_mnttab_cache) == 0) { 896 mtn = zfs_alloc(hdl, sizeof (mnttab_node_t)); 897 mtn->mtn_mt.mnt_special = zfs_strdup(hdl, special); 898 mtn->mtn_mt.mnt_mountp = zfs_strdup(hdl, mountp); 899 mtn->mtn_mt.mnt_fstype = zfs_strdup(hdl, MNTTYPE_ZFS); 900 mtn->mtn_mt.mnt_mntopts = zfs_strdup(hdl, mntopts); 901 avl_add(&hdl->libzfs_mnttab_cache, mtn); 902 } 903 pthread_mutex_unlock(&hdl->libzfs_mnttab_cache_lock); 904} 905 906void 907libzfs_mnttab_remove(libzfs_handle_t *hdl, const char *fsname) 908{ 909 mnttab_node_t find; 910 mnttab_node_t *ret; 911 912 pthread_mutex_lock(&hdl->libzfs_mnttab_cache_lock); 913 find.mtn_mt.mnt_special = (char *)fsname; 914 if ((ret = avl_find(&hdl->libzfs_mnttab_cache, (void *)&find, NULL)) 915 != NULL) { 916 avl_remove(&hdl->libzfs_mnttab_cache, ret); 917 free(ret->mtn_mt.mnt_special); 918 free(ret->mtn_mt.mnt_mountp); 919 free(ret->mtn_mt.mnt_fstype); 920 free(ret->mtn_mt.mnt_mntopts); 921 free(ret); 922 } 923 pthread_mutex_unlock(&hdl->libzfs_mnttab_cache_lock); 924} 925 926int 927zfs_spa_version(zfs_handle_t *zhp, int *spa_version) 928{ 929 zpool_handle_t *zpool_handle = zhp->zpool_hdl; 930 931 if (zpool_handle == NULL) 932 return (-1); 933 934 *spa_version = zpool_get_prop_int(zpool_handle, 935 ZPOOL_PROP_VERSION, NULL); 936 return (0); 937} 938 939/* 940 * The choice of reservation property depends on the SPA version. 941 */ 942static int 943zfs_which_resv_prop(zfs_handle_t *zhp, zfs_prop_t *resv_prop) 944{ 945 int spa_version; 946 947 if (zfs_spa_version(zhp, &spa_version) < 0) 948 return (-1); 949 950 if (spa_version >= SPA_VERSION_REFRESERVATION) 951 *resv_prop = ZFS_PROP_REFRESERVATION; 952 else 953 *resv_prop = ZFS_PROP_RESERVATION; 954 955 return (0); 956} 957 958/* 959 * Given an nvlist of properties to set, validates that they are correct, and 960 * parses any numeric properties (index, boolean, etc) if they are specified as 961 * strings. 962 */ 963nvlist_t * 964zfs_valid_proplist(libzfs_handle_t *hdl, zfs_type_t type, nvlist_t *nvl, 965 uint64_t zoned, zfs_handle_t *zhp, zpool_handle_t *zpool_hdl, 966 const char *errbuf) 967{ 968 nvpair_t *elem; 969 uint64_t intval; 970 char *strval; 971 zfs_prop_t prop; 972 nvlist_t *ret; 973 int chosen_normal = -1; 974 int chosen_utf = -1; 975 976 if (nvlist_alloc(&ret, NV_UNIQUE_NAME, 0) != 0) { 977 (void) no_memory(hdl); 978 return (NULL); 979 } 980 981 /* 982 * Make sure this property is valid and applies to this type. 983 */ 984 985 elem = NULL; 986 while ((elem = nvlist_next_nvpair(nvl, elem)) != NULL) { 987 const char *propname = nvpair_name(elem); 988 989 prop = zfs_name_to_prop(propname); 990 if (prop == ZPROP_INVAL && zfs_prop_user(propname)) { 991 /* 992 * This is a user property: make sure it's a 993 * string, and that it's less than ZAP_MAXNAMELEN. 994 */ 995 if (nvpair_type(elem) != DATA_TYPE_STRING) { 996 zfs_error_aux(hdl, dgettext(TEXT_DOMAIN, 997 "'%s' must be a string"), propname); 998 (void) zfs_error(hdl, EZFS_BADPROP, errbuf); 999 goto error; 1000 } 1001 1002 if (strlen(nvpair_name(elem)) >= ZAP_MAXNAMELEN) { 1003 zfs_error_aux(hdl, dgettext(TEXT_DOMAIN, 1004 "property name '%s' is too long"), 1005 propname); 1006 (void) zfs_error(hdl, EZFS_BADPROP, errbuf); 1007 goto error; 1008 } 1009 1010 (void) nvpair_value_string(elem, &strval); 1011 if (nvlist_add_string(ret, propname, strval) != 0) { 1012 (void) no_memory(hdl); 1013 goto error; 1014 } 1015 continue; 1016 } 1017 1018 /* 1019 * Currently, only user properties can be modified on 1020 * snapshots. 1021 */ 1022 if (type == ZFS_TYPE_SNAPSHOT) { 1023 zfs_error_aux(hdl, dgettext(TEXT_DOMAIN, 1024 "this property can not be modified for snapshots")); 1025 (void) zfs_error(hdl, EZFS_PROPTYPE, errbuf); 1026 goto error; 1027 } 1028 1029 if (prop == ZPROP_INVAL && zfs_prop_userquota(propname)) { 1030 zfs_userquota_prop_t uqtype; 1031 char newpropname[128]; 1032 char domain[128]; 1033 uint64_t rid; 1034 uint64_t valary[3]; 1035 1036 if (userquota_propname_decode(propname, zoned, 1037 &uqtype, domain, sizeof (domain), &rid) != 0) { 1038 zfs_error_aux(hdl, 1039 dgettext(TEXT_DOMAIN, 1040 "'%s' has an invalid user/group name"), 1041 propname); 1042 (void) zfs_error(hdl, EZFS_BADPROP, errbuf); 1043 goto error; 1044 } 1045 1046 if (uqtype != ZFS_PROP_USERQUOTA && 1047 uqtype != ZFS_PROP_GROUPQUOTA) { 1048 zfs_error_aux(hdl, 1049 dgettext(TEXT_DOMAIN, "'%s' is readonly"), 1050 propname); 1051 (void) zfs_error(hdl, EZFS_PROPREADONLY, 1052 errbuf); 1053 goto error; 1054 } 1055 1056 if (nvpair_type(elem) == DATA_TYPE_STRING) { 1057 (void) nvpair_value_string(elem, &strval); 1058 if (strcmp(strval, "none") == 0) { 1059 intval = 0; 1060 } else if (zfs_nicestrtonum(hdl, 1061 strval, &intval) != 0) { 1062 (void) zfs_error(hdl, 1063 EZFS_BADPROP, errbuf); 1064 goto error; 1065 } 1066 } else if (nvpair_type(elem) == 1067 DATA_TYPE_UINT64) { 1068 (void) nvpair_value_uint64(elem, &intval); 1069 if (intval == 0) { 1070 zfs_error_aux(hdl, dgettext(TEXT_DOMAIN, 1071 "use 'none' to disable " 1072 "userquota/groupquota")); 1073 goto error; 1074 } 1075 } else { 1076 zfs_error_aux(hdl, dgettext(TEXT_DOMAIN, 1077 "'%s' must be a number"), propname); 1078 (void) zfs_error(hdl, EZFS_BADPROP, errbuf); 1079 goto error; 1080 } 1081 1082 /* 1083 * Encode the prop name as 1084 * userquota@<hex-rid>-domain, to make it easy 1085 * for the kernel to decode. 1086 */ 1087 (void) snprintf(newpropname, sizeof (newpropname), 1088 "%s%llx-%s", zfs_userquota_prop_prefixes[uqtype], 1089 (longlong_t)rid, domain); 1090 valary[0] = uqtype; 1091 valary[1] = rid; 1092 valary[2] = intval; 1093 if (nvlist_add_uint64_array(ret, newpropname, 1094 valary, 3) != 0) { 1095 (void) no_memory(hdl); 1096 goto error; 1097 } 1098 continue; 1099 } else if (prop == ZPROP_INVAL && zfs_prop_written(propname)) { 1100 zfs_error_aux(hdl, dgettext(TEXT_DOMAIN, 1101 "'%s' is readonly"), 1102 propname); 1103 (void) zfs_error(hdl, EZFS_PROPREADONLY, errbuf); 1104 goto error; 1105 } 1106 1107 if (prop == ZPROP_INVAL) { 1108 zfs_error_aux(hdl, dgettext(TEXT_DOMAIN, 1109 "invalid property '%s'"), propname); 1110 (void) zfs_error(hdl, EZFS_BADPROP, errbuf); 1111 goto error; 1112 } 1113 1114 if (!zfs_prop_valid_for_type(prop, type)) { 1115 zfs_error_aux(hdl, 1116 dgettext(TEXT_DOMAIN, "'%s' does not " 1117 "apply to datasets of this type"), propname); 1118 (void) zfs_error(hdl, EZFS_PROPTYPE, errbuf); 1119 goto error; 1120 } 1121 1122 if (zfs_prop_readonly(prop) && 1123 (!zfs_prop_setonce(prop) || zhp != NULL)) { 1124 zfs_error_aux(hdl, 1125 dgettext(TEXT_DOMAIN, "'%s' is readonly"), 1126 propname); 1127 (void) zfs_error(hdl, EZFS_PROPREADONLY, errbuf); 1128 goto error; 1129 } 1130 1131 if (zprop_parse_value(hdl, elem, prop, type, ret, 1132 &strval, &intval, errbuf) != 0) 1133 goto error; 1134 1135 /* 1136 * Perform some additional checks for specific properties. 1137 */ 1138 switch (prop) { 1139 case ZFS_PROP_VERSION: 1140 { 1141 int version; 1142 1143 if (zhp == NULL) 1144 break; 1145 version = zfs_prop_get_int(zhp, ZFS_PROP_VERSION); 1146 if (intval < version) { 1147 zfs_error_aux(hdl, dgettext(TEXT_DOMAIN, 1148 "Can not downgrade; already at version %u"), 1149 version); 1150 (void) zfs_error(hdl, EZFS_BADPROP, errbuf); 1151 goto error; 1152 } 1153 break; 1154 } 1155 1156 case ZFS_PROP_VOLBLOCKSIZE: 1157 case ZFS_PROP_RECORDSIZE: 1158 { 1159 int maxbs = SPA_MAXBLOCKSIZE; 1160 if (zpool_hdl != NULL) { 1161 maxbs = zpool_get_prop_int(zpool_hdl, 1162 ZPOOL_PROP_MAXBLOCKSIZE, NULL); 1163 } 1164 /* 1165 * Volumes are limited to a volblocksize of 128KB, 1166 * because they typically service workloads with 1167 * small random writes, which incur a large performance 1168 * penalty with large blocks. 1169 */ 1170 if (prop == ZFS_PROP_VOLBLOCKSIZE) 1171 maxbs = SPA_OLD_MAXBLOCKSIZE; 1172 /* 1173 * The value must be a power of two between 1174 * SPA_MINBLOCKSIZE and maxbs. 1175 */ 1176 if (intval < SPA_MINBLOCKSIZE || 1177 intval > maxbs || !ISP2(intval)) { 1178 zfs_error_aux(hdl, dgettext(TEXT_DOMAIN, 1179 "'%s' must be power of 2 from 512B " 1180 "to %uKB"), propname, maxbs >> 10); 1181 (void) zfs_error(hdl, EZFS_BADPROP, errbuf); 1182 goto error; 1183 } 1184 break; 1185 } 1186 case ZFS_PROP_MLSLABEL: 1187 { 1188#ifdef illumos 1189 /* 1190 * Verify the mlslabel string and convert to 1191 * internal hex label string. 1192 */ 1193 1194 m_label_t *new_sl; 1195 char *hex = NULL; /* internal label string */ 1196 1197 /* Default value is already OK. */ 1198 if (strcasecmp(strval, ZFS_MLSLABEL_DEFAULT) == 0) 1199 break; 1200 1201 /* Verify the label can be converted to binary form */ 1202 if (((new_sl = m_label_alloc(MAC_LABEL)) == NULL) || 1203 (str_to_label(strval, &new_sl, MAC_LABEL, 1204 L_NO_CORRECTION, NULL) == -1)) { 1205 goto badlabel; 1206 } 1207 1208 /* Now translate to hex internal label string */ 1209 if (label_to_str(new_sl, &hex, M_INTERNAL, 1210 DEF_NAMES) != 0) { 1211 if (hex) 1212 free(hex); 1213 goto badlabel; 1214 } 1215 m_label_free(new_sl); 1216 1217 /* If string is already in internal form, we're done. */ 1218 if (strcmp(strval, hex) == 0) { 1219 free(hex); 1220 break; 1221 } 1222 1223 /* Replace the label string with the internal form. */ 1224 (void) nvlist_remove(ret, zfs_prop_to_name(prop), 1225 DATA_TYPE_STRING); 1226 verify(nvlist_add_string(ret, zfs_prop_to_name(prop), 1227 hex) == 0); 1228 free(hex); 1229 1230 break; 1231 1232badlabel: 1233 zfs_error_aux(hdl, dgettext(TEXT_DOMAIN, 1234 "invalid mlslabel '%s'"), strval); 1235 (void) zfs_error(hdl, EZFS_BADPROP, errbuf); 1236 m_label_free(new_sl); /* OK if null */ 1237#else /* !illumos */ 1238 zfs_error_aux(hdl, dgettext(TEXT_DOMAIN, 1239 "mlslabel is not supported on FreeBSD")); 1240 (void) zfs_error(hdl, EZFS_BADPROP, errbuf); 1241#endif /* illumos */ 1242 goto error; 1243 1244 } 1245 1246 case ZFS_PROP_MOUNTPOINT: 1247 { 1248 namecheck_err_t why; 1249 1250 if (strcmp(strval, ZFS_MOUNTPOINT_NONE) == 0 || 1251 strcmp(strval, ZFS_MOUNTPOINT_LEGACY) == 0) 1252 break; 1253 1254 if (mountpoint_namecheck(strval, &why)) { 1255 switch (why) { 1256 case NAME_ERR_LEADING_SLASH: 1257 zfs_error_aux(hdl, 1258 dgettext(TEXT_DOMAIN, 1259 "'%s' must be an absolute path, " 1260 "'none', or 'legacy'"), propname); 1261 break; 1262 case NAME_ERR_TOOLONG: 1263 zfs_error_aux(hdl, 1264 dgettext(TEXT_DOMAIN, 1265 "component of '%s' is too long"), 1266 propname); 1267 break; 1268 1269 default: 1270 zfs_error_aux(hdl, 1271 dgettext(TEXT_DOMAIN, 1272 "(%d) not defined"), 1273 why); 1274 break; 1275 } 1276 (void) zfs_error(hdl, EZFS_BADPROP, errbuf); 1277 goto error; 1278 } 1279 } 1280 1281 /*FALLTHRU*/ 1282 1283 case ZFS_PROP_SHARESMB: 1284 case ZFS_PROP_SHARENFS: 1285 /* 1286 * For the mountpoint and sharenfs or sharesmb 1287 * properties, check if it can be set in a 1288 * global/non-global zone based on 1289 * the zoned property value: 1290 * 1291 * global zone non-global zone 1292 * -------------------------------------------------- 1293 * zoned=on mountpoint (no) mountpoint (yes) 1294 * sharenfs (no) sharenfs (no) 1295 * sharesmb (no) sharesmb (no) 1296 * 1297 * zoned=off mountpoint (yes) N/A 1298 * sharenfs (yes) 1299 * sharesmb (yes) 1300 */ 1301 if (zoned) { 1302 if (getzoneid() == GLOBAL_ZONEID) { 1303 zfs_error_aux(hdl, dgettext(TEXT_DOMAIN, 1304 "'%s' cannot be set on " 1305 "dataset in a non-global zone"), 1306 propname); 1307 (void) zfs_error(hdl, EZFS_ZONED, 1308 errbuf); 1309 goto error; 1310 } else if (prop == ZFS_PROP_SHARENFS || 1311 prop == ZFS_PROP_SHARESMB) { 1312 zfs_error_aux(hdl, dgettext(TEXT_DOMAIN, 1313 "'%s' cannot be set in " 1314 "a non-global zone"), propname); 1315 (void) zfs_error(hdl, EZFS_ZONED, 1316 errbuf); 1317 goto error; 1318 } 1319 } else if (getzoneid() != GLOBAL_ZONEID) { 1320 /* 1321 * If zoned property is 'off', this must be in 1322 * a global zone. If not, something is wrong. 1323 */ 1324 zfs_error_aux(hdl, dgettext(TEXT_DOMAIN, 1325 "'%s' cannot be set while dataset " 1326 "'zoned' property is set"), propname); 1327 (void) zfs_error(hdl, EZFS_ZONED, errbuf); 1328 goto error; 1329 } 1330 1331 /* 1332 * At this point, it is legitimate to set the 1333 * property. Now we want to make sure that the 1334 * property value is valid if it is sharenfs. 1335 */ 1336 if ((prop == ZFS_PROP_SHARENFS || 1337 prop == ZFS_PROP_SHARESMB) && 1338 strcmp(strval, "on") != 0 && 1339 strcmp(strval, "off") != 0) { 1340 zfs_share_proto_t proto; 1341 1342 if (prop == ZFS_PROP_SHARESMB) 1343 proto = PROTO_SMB; 1344 else 1345 proto = PROTO_NFS; 1346 1347 /* 1348 * Must be an valid sharing protocol 1349 * option string so init the libshare 1350 * in order to enable the parser and 1351 * then parse the options. We use the 1352 * control API since we don't care about 1353 * the current configuration and don't 1354 * want the overhead of loading it 1355 * until we actually do something. 1356 */ 1357 1358 if (zfs_init_libshare(hdl, 1359 SA_INIT_CONTROL_API) != SA_OK) { 1360 /* 1361 * An error occurred so we can't do 1362 * anything 1363 */ 1364 zfs_error_aux(hdl, dgettext(TEXT_DOMAIN, 1365 "'%s' cannot be set: problem " 1366 "in share initialization"), 1367 propname); 1368 (void) zfs_error(hdl, EZFS_BADPROP, 1369 errbuf); 1370 goto error; 1371 } 1372 1373 if (zfs_parse_options(strval, proto) != SA_OK) { 1374 /* 1375 * There was an error in parsing so 1376 * deal with it by issuing an error 1377 * message and leaving after 1378 * uninitializing the the libshare 1379 * interface. 1380 */ 1381 zfs_error_aux(hdl, dgettext(TEXT_DOMAIN, 1382 "'%s' cannot be set to invalid " 1383 "options"), propname); 1384 (void) zfs_error(hdl, EZFS_BADPROP, 1385 errbuf); 1386 zfs_uninit_libshare(hdl); 1387 goto error; 1388 } 1389 zfs_uninit_libshare(hdl); 1390 } 1391 1392 break; 1393 1394 case ZFS_PROP_UTF8ONLY: 1395 chosen_utf = (int)intval; 1396 break; 1397 1398 case ZFS_PROP_NORMALIZE: 1399 chosen_normal = (int)intval; 1400 break; 1401 1402 default: 1403 break; 1404 } 1405 1406 /* 1407 * For changes to existing volumes, we have some additional 1408 * checks to enforce. 1409 */ 1410 if (type == ZFS_TYPE_VOLUME && zhp != NULL) { 1411 uint64_t volsize = zfs_prop_get_int(zhp, 1412 ZFS_PROP_VOLSIZE); 1413 uint64_t blocksize = zfs_prop_get_int(zhp, 1414 ZFS_PROP_VOLBLOCKSIZE); 1415 char buf[64]; 1416 1417 switch (prop) { 1418 case ZFS_PROP_RESERVATION: 1419 if (intval > volsize) { 1420 zfs_error_aux(hdl, dgettext(TEXT_DOMAIN, 1421 "'%s' is greater than current " 1422 "volume size"), propname); 1423 (void) zfs_error(hdl, EZFS_BADPROP, 1424 errbuf); 1425 goto error; 1426 } 1427 break; 1428 1429 case ZFS_PROP_REFRESERVATION: 1430 if (intval > volsize && intval != UINT64_MAX) { 1431 zfs_error_aux(hdl, dgettext(TEXT_DOMAIN, 1432 "'%s' is greater than current " 1433 "volume size"), propname); 1434 (void) zfs_error(hdl, EZFS_BADPROP, 1435 errbuf); 1436 goto error; 1437 } 1438 break; 1439 1440 case ZFS_PROP_VOLSIZE: 1441 if (intval % blocksize != 0) { 1442 zfs_nicenum(blocksize, buf, 1443 sizeof (buf)); 1444 zfs_error_aux(hdl, dgettext(TEXT_DOMAIN, 1445 "'%s' must be a multiple of " 1446 "volume block size (%s)"), 1447 propname, buf); 1448 (void) zfs_error(hdl, EZFS_BADPROP, 1449 errbuf); 1450 goto error; 1451 } 1452 1453 if (intval == 0) { 1454 zfs_error_aux(hdl, dgettext(TEXT_DOMAIN, 1455 "'%s' cannot be zero"), 1456 propname); 1457 (void) zfs_error(hdl, EZFS_BADPROP, 1458 errbuf); 1459 goto error; 1460 } 1461 break; 1462 1463 default: 1464 break; 1465 } 1466 } 1467 } 1468 1469 /* 1470 * If normalization was chosen, but no UTF8 choice was made, 1471 * enforce rejection of non-UTF8 names. 1472 * 1473 * If normalization was chosen, but rejecting non-UTF8 names 1474 * was explicitly not chosen, it is an error. 1475 */ 1476 if (chosen_normal > 0 && chosen_utf < 0) { 1477 if (nvlist_add_uint64(ret, 1478 zfs_prop_to_name(ZFS_PROP_UTF8ONLY), 1) != 0) { 1479 (void) no_memory(hdl); 1480 goto error; 1481 } 1482 } else if (chosen_normal > 0 && chosen_utf == 0) { 1483 zfs_error_aux(hdl, dgettext(TEXT_DOMAIN, 1484 "'%s' must be set 'on' if normalization chosen"), 1485 zfs_prop_to_name(ZFS_PROP_UTF8ONLY)); 1486 (void) zfs_error(hdl, EZFS_BADPROP, errbuf); 1487 goto error; 1488 } 1489 return (ret); 1490 1491error: 1492 nvlist_free(ret); 1493 return (NULL); 1494} 1495 1496int 1497zfs_add_synthetic_resv(zfs_handle_t *zhp, nvlist_t *nvl) 1498{ 1499 uint64_t old_volsize; 1500 uint64_t new_volsize; 1501 uint64_t old_reservation; 1502 uint64_t new_reservation; 1503 zfs_prop_t resv_prop; 1504 nvlist_t *props; 1505 1506 /* 1507 * If this is an existing volume, and someone is setting the volsize, 1508 * make sure that it matches the reservation, or add it if necessary. 1509 */ 1510 old_volsize = zfs_prop_get_int(zhp, ZFS_PROP_VOLSIZE); 1511 if (zfs_which_resv_prop(zhp, &resv_prop) < 0) 1512 return (-1); 1513 old_reservation = zfs_prop_get_int(zhp, resv_prop); 1514 1515 props = fnvlist_alloc(); 1516 fnvlist_add_uint64(props, zfs_prop_to_name(ZFS_PROP_VOLBLOCKSIZE), 1517 zfs_prop_get_int(zhp, ZFS_PROP_VOLBLOCKSIZE)); 1518 1519 if ((zvol_volsize_to_reservation(old_volsize, props) != 1520 old_reservation) || nvlist_exists(nvl, 1521 zfs_prop_to_name(resv_prop))) { 1522 fnvlist_free(props); 1523 return (0); 1524 } 1525 if (nvlist_lookup_uint64(nvl, zfs_prop_to_name(ZFS_PROP_VOLSIZE), 1526 &new_volsize) != 0) { 1527 fnvlist_free(props); 1528 return (-1); 1529 } 1530 new_reservation = zvol_volsize_to_reservation(new_volsize, props); 1531 fnvlist_free(props); 1532 1533 if (nvlist_add_uint64(nvl, zfs_prop_to_name(resv_prop), 1534 new_reservation) != 0) { 1535 (void) no_memory(zhp->zfs_hdl); 1536 return (-1); 1537 } 1538 return (1); 1539} 1540 1541/* 1542 * Helper for 'zfs {set|clone} refreservation=auto'. Must be called after 1543 * zfs_valid_proplist(), as it is what sets the UINT64_MAX sentinal value. 1544 * Return codes must match zfs_add_synthetic_resv(). 1545 */ 1546static int 1547zfs_fix_auto_resv(zfs_handle_t *zhp, nvlist_t *nvl) 1548{ 1549 uint64_t volsize; 1550 uint64_t resvsize; 1551 zfs_prop_t prop; 1552 nvlist_t *props; 1553 1554 if (!ZFS_IS_VOLUME(zhp)) { 1555 return (0); 1556 } 1557 1558 if (zfs_which_resv_prop(zhp, &prop) != 0) { 1559 return (-1); 1560 } 1561 1562 if (prop != ZFS_PROP_REFRESERVATION) { 1563 return (0); 1564 } 1565 1566 if (nvlist_lookup_uint64(nvl, zfs_prop_to_name(prop), &resvsize) != 0) { 1567 /* No value being set, so it can't be "auto" */ 1568 return (0); 1569 } 1570 if (resvsize != UINT64_MAX) { 1571 /* Being set to a value other than "auto" */ 1572 return (0); 1573 } 1574 1575 props = fnvlist_alloc(); 1576 1577 fnvlist_add_uint64(props, zfs_prop_to_name(ZFS_PROP_VOLBLOCKSIZE), 1578 zfs_prop_get_int(zhp, ZFS_PROP_VOLBLOCKSIZE)); 1579 1580 if (nvlist_lookup_uint64(nvl, zfs_prop_to_name(ZFS_PROP_VOLSIZE), 1581 &volsize) != 0) { 1582 volsize = zfs_prop_get_int(zhp, ZFS_PROP_VOLSIZE); 1583 } 1584 1585 resvsize = zvol_volsize_to_reservation(volsize, props); 1586 fnvlist_free(props); 1587 1588 (void) nvlist_remove_all(nvl, zfs_prop_to_name(prop)); 1589 if (nvlist_add_uint64(nvl, zfs_prop_to_name(prop), resvsize) != 0) { 1590 (void) no_memory(zhp->zfs_hdl); 1591 return (-1); 1592 } 1593 return (1); 1594} 1595 1596void 1597zfs_setprop_error(libzfs_handle_t *hdl, zfs_prop_t prop, int err, 1598 char *errbuf) 1599{ 1600 switch (err) { 1601 1602 case ENOSPC: 1603 /* 1604 * For quotas and reservations, ENOSPC indicates 1605 * something different; setting a quota or reservation 1606 * doesn't use any disk space. 1607 */ 1608 switch (prop) { 1609 case ZFS_PROP_QUOTA: 1610 case ZFS_PROP_REFQUOTA: 1611 zfs_error_aux(hdl, dgettext(TEXT_DOMAIN, 1612 "size is less than current used or " 1613 "reserved space")); 1614 (void) zfs_error(hdl, EZFS_PROPSPACE, errbuf); 1615 break; 1616 1617 case ZFS_PROP_RESERVATION: 1618 case ZFS_PROP_REFRESERVATION: 1619 zfs_error_aux(hdl, dgettext(TEXT_DOMAIN, 1620 "size is greater than available space")); 1621 (void) zfs_error(hdl, EZFS_PROPSPACE, errbuf); 1622 break; 1623 1624 default: 1625 (void) zfs_standard_error(hdl, err, errbuf); 1626 break; 1627 } 1628 break; 1629 1630 case EBUSY: 1631 (void) zfs_standard_error(hdl, EBUSY, errbuf); 1632 break; 1633 1634 case EROFS: 1635 (void) zfs_error(hdl, EZFS_DSREADONLY, errbuf); 1636 break; 1637 1638 case E2BIG: 1639 zfs_error_aux(hdl, dgettext(TEXT_DOMAIN, 1640 "property value too long")); 1641 (void) zfs_error(hdl, EZFS_BADPROP, errbuf); 1642 break; 1643 1644 case ENOTSUP: 1645 zfs_error_aux(hdl, dgettext(TEXT_DOMAIN, 1646 "pool and or dataset must be upgraded to set this " 1647 "property or value")); 1648 (void) zfs_error(hdl, EZFS_BADVERSION, errbuf); 1649 break; 1650 1651 case ERANGE: 1652 case EDOM: 1653 if (prop == ZFS_PROP_COMPRESSION || 1654 prop == ZFS_PROP_RECORDSIZE) { 1655 (void) zfs_error_aux(hdl, dgettext(TEXT_DOMAIN, 1656 "property setting is not allowed on " 1657 "bootable datasets")); 1658 (void) zfs_error(hdl, EZFS_NOTSUP, errbuf); 1659 } else if (prop == ZFS_PROP_CHECKSUM || 1660 prop == ZFS_PROP_DEDUP) { 1661 (void) zfs_error_aux(hdl, dgettext(TEXT_DOMAIN, 1662 "property setting is not allowed on " 1663 "root pools")); 1664 (void) zfs_error(hdl, EZFS_NOTSUP, errbuf); 1665 } else { 1666 (void) zfs_standard_error(hdl, err, errbuf); 1667 } 1668 break; 1669 1670 case EINVAL: 1671 if (prop == ZPROP_INVAL) { 1672 (void) zfs_error(hdl, EZFS_BADPROP, errbuf); 1673 } else { 1674 (void) zfs_standard_error(hdl, err, errbuf); 1675 } 1676 break; 1677 1678 case EOVERFLOW: 1679 /* 1680 * This platform can't address a volume this big. 1681 */ 1682#ifdef _ILP32 1683 if (prop == ZFS_PROP_VOLSIZE) { 1684 (void) zfs_error(hdl, EZFS_VOLTOOBIG, errbuf); 1685 break; 1686 } 1687#endif 1688 /* FALLTHROUGH */ 1689 default: 1690 (void) zfs_standard_error(hdl, err, errbuf); 1691 } 1692} 1693 1694/* 1695 * Given a property name and value, set the property for the given dataset. 1696 */ 1697int 1698zfs_prop_set(zfs_handle_t *zhp, const char *propname, const char *propval) 1699{ 1700 int ret = -1; 1701 char errbuf[1024]; 1702 libzfs_handle_t *hdl = zhp->zfs_hdl; 1703 nvlist_t *nvl = NULL; 1704 1705 (void) snprintf(errbuf, sizeof (errbuf), 1706 dgettext(TEXT_DOMAIN, "cannot set property for '%s'"), 1707 zhp->zfs_name); 1708 1709 if (nvlist_alloc(&nvl, NV_UNIQUE_NAME, 0) != 0 || 1710 nvlist_add_string(nvl, propname, propval) != 0) { 1711 (void) no_memory(hdl); 1712 goto error; 1713 } 1714 1715 ret = zfs_prop_set_list(zhp, nvl); 1716 1717error: 1718 nvlist_free(nvl); 1719 return (ret); 1720} 1721 1722 1723 1724/* 1725 * Given an nvlist of property names and values, set the properties for the 1726 * given dataset. 1727 */ 1728int 1729zfs_prop_set_list(zfs_handle_t *zhp, nvlist_t *props) 1730{ 1731 zfs_cmd_t zc = { 0 }; 1732 int ret = -1; 1733 prop_changelist_t **cls = NULL; 1734 int cl_idx; 1735 char errbuf[1024]; 1736 libzfs_handle_t *hdl = zhp->zfs_hdl; 1737 nvlist_t *nvl; 1738 int nvl_len; 1739 int added_resv = 0; 1740 1741 (void) snprintf(errbuf, sizeof (errbuf), 1742 dgettext(TEXT_DOMAIN, "cannot set property for '%s'"), 1743 zhp->zfs_name); 1744 1745 if ((nvl = zfs_valid_proplist(hdl, zhp->zfs_type, props, 1746 zfs_prop_get_int(zhp, ZFS_PROP_ZONED), zhp, zhp->zpool_hdl, 1747 errbuf)) == NULL) 1748 goto error; 1749 1750 /* 1751 * We have to check for any extra properties which need to be added 1752 * before computing the length of the nvlist. 1753 */ 1754 for (nvpair_t *elem = nvlist_next_nvpair(nvl, NULL); 1755 elem != NULL; 1756 elem = nvlist_next_nvpair(nvl, elem)) { 1757 if (zfs_name_to_prop(nvpair_name(elem)) == ZFS_PROP_VOLSIZE && 1758 (added_resv = zfs_add_synthetic_resv(zhp, nvl)) == -1) { 1759 goto error; 1760 } 1761 } 1762 1763 if (added_resv != 1 && 1764 (added_resv = zfs_fix_auto_resv(zhp, nvl)) == -1) { 1765 goto error; 1766 } 1767 1768 /* 1769 * Check how many properties we're setting and allocate an array to 1770 * store changelist pointers for postfix(). 1771 */ 1772 nvl_len = 0; 1773 for (nvpair_t *elem = nvlist_next_nvpair(nvl, NULL); 1774 elem != NULL; 1775 elem = nvlist_next_nvpair(nvl, elem)) 1776 nvl_len++; 1777 if ((cls = calloc(nvl_len, sizeof (prop_changelist_t *))) == NULL) 1778 goto error; 1779 1780 cl_idx = 0; 1781 for (nvpair_t *elem = nvlist_next_nvpair(nvl, NULL); 1782 elem != NULL; 1783 elem = nvlist_next_nvpair(nvl, elem)) { 1784 1785 zfs_prop_t prop = zfs_name_to_prop(nvpair_name(elem)); 1786 1787 assert(cl_idx < nvl_len); 1788 /* 1789 * We don't want to unmount & remount the dataset when changing 1790 * its canmount property to 'on' or 'noauto'. We only use 1791 * the changelist logic to unmount when setting canmount=off. 1792 */ 1793 if (prop != ZFS_PROP_CANMOUNT || 1794 (fnvpair_value_uint64(elem) == ZFS_CANMOUNT_OFF && 1795 zfs_is_mounted(zhp, NULL))) { 1796 cls[cl_idx] = changelist_gather(zhp, prop, 0, 0); 1797 if (cls[cl_idx] == NULL) 1798 goto error; 1799 } 1800 1801 if (prop == ZFS_PROP_MOUNTPOINT && 1802 changelist_haszonedchild(cls[cl_idx])) { 1803 zfs_error_aux(hdl, dgettext(TEXT_DOMAIN, 1804 "child dataset with inherited mountpoint is used " 1805 "in a non-global zone")); 1806 ret = zfs_error(hdl, EZFS_ZONED, errbuf); 1807 goto error; 1808 } 1809 1810 /* We don't support those properties on FreeBSD. */ 1811 switch (prop) { 1812 case ZFS_PROP_DEVICES: 1813 case ZFS_PROP_ISCSIOPTIONS: 1814 case ZFS_PROP_XATTR: 1815 case ZFS_PROP_VSCAN: 1816 case ZFS_PROP_NBMAND: 1817 case ZFS_PROP_MLSLABEL: 1818 (void) snprintf(errbuf, sizeof (errbuf), 1819 "property '%s' not supported on FreeBSD", 1820 nvpair_name(elem)); 1821 ret = zfs_error(hdl, EZFS_PERM, errbuf); 1822 goto error; 1823 } 1824 1825 if (cls[cl_idx] != NULL && 1826 (ret = changelist_prefix(cls[cl_idx])) != 0) 1827 goto error; 1828 1829 cl_idx++; 1830 } 1831 assert(cl_idx == nvl_len); 1832 1833 /* 1834 * Execute the corresponding ioctl() to set this list of properties. 1835 */ 1836 (void) strlcpy(zc.zc_name, zhp->zfs_name, sizeof (zc.zc_name)); 1837 1838 if ((ret = zcmd_write_src_nvlist(hdl, &zc, nvl)) != 0 || 1839 (ret = zcmd_alloc_dst_nvlist(hdl, &zc, 0)) != 0) 1840 goto error; 1841 1842 ret = zfs_ioctl(hdl, ZFS_IOC_SET_PROP, &zc); 1843 1844 if (ret != 0) { 1845 /* Get the list of unset properties back and report them. */ 1846 nvlist_t *errorprops = NULL; 1847 if (zcmd_read_dst_nvlist(hdl, &zc, &errorprops) != 0) 1848 goto error; 1849 for (nvpair_t *elem = nvlist_next_nvpair(nvl, NULL); 1850 elem != NULL; 1851 elem = nvlist_next_nvpair(nvl, elem)) { 1852 zfs_prop_t prop = zfs_name_to_prop(nvpair_name(elem)); 1853 zfs_setprop_error(hdl, prop, errno, errbuf); 1854 } 1855 nvlist_free(errorprops); 1856 1857 if (added_resv && errno == ENOSPC) { 1858 /* clean up the volsize property we tried to set */ 1859 uint64_t old_volsize = zfs_prop_get_int(zhp, 1860 ZFS_PROP_VOLSIZE); 1861 nvlist_free(nvl); 1862 nvl = NULL; 1863 zcmd_free_nvlists(&zc); 1864 1865 if (nvlist_alloc(&nvl, NV_UNIQUE_NAME, 0) != 0) 1866 goto error; 1867 if (nvlist_add_uint64(nvl, 1868 zfs_prop_to_name(ZFS_PROP_VOLSIZE), 1869 old_volsize) != 0) 1870 goto error; 1871 if (zcmd_write_src_nvlist(hdl, &zc, nvl) != 0) 1872 goto error; 1873 (void) zfs_ioctl(hdl, ZFS_IOC_SET_PROP, &zc); 1874 } 1875 } else { 1876 for (cl_idx = 0; cl_idx < nvl_len; cl_idx++) { 1877 if (cls[cl_idx] != NULL) { 1878 int clp_err = changelist_postfix(cls[cl_idx]); 1879 if (clp_err != 0) 1880 ret = clp_err; 1881 } 1882 } 1883 1884 /* 1885 * Refresh the statistics so the new property value 1886 * is reflected. 1887 */ 1888 if (ret == 0) 1889 (void) get_stats(zhp); 1890 } 1891 1892error: 1893 nvlist_free(nvl); 1894 zcmd_free_nvlists(&zc); 1895 if (cls != NULL) { 1896 for (cl_idx = 0; cl_idx < nvl_len; cl_idx++) { 1897 if (cls[cl_idx] != NULL) 1898 changelist_free(cls[cl_idx]); 1899 } 1900 free(cls); 1901 } 1902 return (ret); 1903} 1904 1905/* 1906 * Given a property, inherit the value from the parent dataset, or if received 1907 * is TRUE, revert to the received value, if any. 1908 */ 1909int 1910zfs_prop_inherit(zfs_handle_t *zhp, const char *propname, boolean_t received) 1911{ 1912 zfs_cmd_t zc = { 0 }; 1913 int ret; 1914 prop_changelist_t *cl; 1915 libzfs_handle_t *hdl = zhp->zfs_hdl; 1916 char errbuf[1024]; 1917 zfs_prop_t prop; 1918 1919 (void) snprintf(errbuf, sizeof (errbuf), dgettext(TEXT_DOMAIN, 1920 "cannot inherit %s for '%s'"), propname, zhp->zfs_name); 1921 1922 zc.zc_cookie = received; 1923 if ((prop = zfs_name_to_prop(propname)) == ZPROP_INVAL) { 1924 /* 1925 * For user properties, the amount of work we have to do is very 1926 * small, so just do it here. 1927 */ 1928 if (!zfs_prop_user(propname)) { 1929 zfs_error_aux(hdl, dgettext(TEXT_DOMAIN, 1930 "invalid property")); 1931 return (zfs_error(hdl, EZFS_BADPROP, errbuf)); 1932 } 1933 1934 (void) strlcpy(zc.zc_name, zhp->zfs_name, sizeof (zc.zc_name)); 1935 (void) strlcpy(zc.zc_value, propname, sizeof (zc.zc_value)); 1936 1937 if (zfs_ioctl(zhp->zfs_hdl, ZFS_IOC_INHERIT_PROP, &zc) != 0) 1938 return (zfs_standard_error(hdl, errno, errbuf)); 1939 1940 return (0); 1941 } 1942 1943 /* 1944 * Verify that this property is inheritable. 1945 */ 1946 if (zfs_prop_readonly(prop)) 1947 return (zfs_error(hdl, EZFS_PROPREADONLY, errbuf)); 1948 1949 if (!zfs_prop_inheritable(prop) && !received) 1950 return (zfs_error(hdl, EZFS_PROPNONINHERIT, errbuf)); 1951 1952 /* 1953 * Check to see if the value applies to this type 1954 */ 1955 if (!zfs_prop_valid_for_type(prop, zhp->zfs_type)) 1956 return (zfs_error(hdl, EZFS_PROPTYPE, errbuf)); 1957 1958 /* 1959 * Normalize the name, to get rid of shorthand abbreviations. 1960 */ 1961 propname = zfs_prop_to_name(prop); 1962 (void) strlcpy(zc.zc_name, zhp->zfs_name, sizeof (zc.zc_name)); 1963 (void) strlcpy(zc.zc_value, propname, sizeof (zc.zc_value)); 1964 1965 if (prop == ZFS_PROP_MOUNTPOINT && getzoneid() == GLOBAL_ZONEID && 1966 zfs_prop_get_int(zhp, ZFS_PROP_ZONED)) { 1967 zfs_error_aux(hdl, dgettext(TEXT_DOMAIN, 1968 "dataset is used in a non-global zone")); 1969 return (zfs_error(hdl, EZFS_ZONED, errbuf)); 1970 } 1971 1972 /* 1973 * Determine datasets which will be affected by this change, if any. 1974 */ 1975 if ((cl = changelist_gather(zhp, prop, 0, 0)) == NULL) 1976 return (-1); 1977 1978 if (prop == ZFS_PROP_MOUNTPOINT && changelist_haszonedchild(cl)) { 1979 zfs_error_aux(hdl, dgettext(TEXT_DOMAIN, 1980 "child dataset with inherited mountpoint is used " 1981 "in a non-global zone")); 1982 ret = zfs_error(hdl, EZFS_ZONED, errbuf); 1983 goto error; 1984 } 1985 1986 if ((ret = changelist_prefix(cl)) != 0) 1987 goto error; 1988 1989 if ((ret = zfs_ioctl(zhp->zfs_hdl, ZFS_IOC_INHERIT_PROP, &zc)) != 0) { 1990 return (zfs_standard_error(hdl, errno, errbuf)); 1991 } else { 1992 1993 if ((ret = changelist_postfix(cl)) != 0) 1994 goto error; 1995 1996 /* 1997 * Refresh the statistics so the new property is reflected. 1998 */ 1999 (void) get_stats(zhp); 2000 } 2001 2002error: 2003 changelist_free(cl); 2004 return (ret); 2005} 2006 2007/* 2008 * True DSL properties are stored in an nvlist. The following two functions 2009 * extract them appropriately. 2010 */ 2011static uint64_t 2012getprop_uint64(zfs_handle_t *zhp, zfs_prop_t prop, char **source) 2013{ 2014 nvlist_t *nv; 2015 uint64_t value; 2016 2017 *source = NULL; 2018 if (nvlist_lookup_nvlist(zhp->zfs_props, 2019 zfs_prop_to_name(prop), &nv) == 0) { 2020 verify(nvlist_lookup_uint64(nv, ZPROP_VALUE, &value) == 0); 2021 (void) nvlist_lookup_string(nv, ZPROP_SOURCE, source); 2022 } else { 2023 verify(!zhp->zfs_props_table || 2024 zhp->zfs_props_table[prop] == B_TRUE); 2025 value = zfs_prop_default_numeric(prop); 2026 *source = ""; 2027 } 2028 2029 return (value); 2030} 2031 2032static const char * 2033getprop_string(zfs_handle_t *zhp, zfs_prop_t prop, char **source) 2034{ 2035 nvlist_t *nv; 2036 const char *value; 2037 2038 *source = NULL; 2039 if (nvlist_lookup_nvlist(zhp->zfs_props, 2040 zfs_prop_to_name(prop), &nv) == 0) { 2041 value = fnvlist_lookup_string(nv, ZPROP_VALUE); 2042 (void) nvlist_lookup_string(nv, ZPROP_SOURCE, source); 2043 } else { 2044 verify(!zhp->zfs_props_table || 2045 zhp->zfs_props_table[prop] == B_TRUE); 2046 value = zfs_prop_default_string(prop); 2047 *source = ""; 2048 } 2049 2050 return (value); 2051} 2052 2053static boolean_t 2054zfs_is_recvd_props_mode(zfs_handle_t *zhp) 2055{ 2056 return (zhp->zfs_props == zhp->zfs_recvd_props); 2057} 2058 2059static void 2060zfs_set_recvd_props_mode(zfs_handle_t *zhp, uint64_t *cookie) 2061{ 2062 *cookie = (uint64_t)(uintptr_t)zhp->zfs_props; 2063 zhp->zfs_props = zhp->zfs_recvd_props; 2064} 2065 2066static void 2067zfs_unset_recvd_props_mode(zfs_handle_t *zhp, uint64_t *cookie) 2068{ 2069 zhp->zfs_props = (nvlist_t *)(uintptr_t)*cookie; 2070 *cookie = 0; 2071} 2072 2073/* 2074 * Internal function for getting a numeric property. Both zfs_prop_get() and 2075 * zfs_prop_get_int() are built using this interface. 2076 * 2077 * Certain properties can be overridden using 'mount -o'. In this case, scan 2078 * the contents of the /etc/mnttab entry, searching for the appropriate options. 2079 * If they differ from the on-disk values, report the current values and mark 2080 * the source "temporary". 2081 */ 2082static int 2083get_numeric_property(zfs_handle_t *zhp, zfs_prop_t prop, zprop_source_t *src, 2084 char **source, uint64_t *val) 2085{ 2086 zfs_cmd_t zc = { 0 }; 2087 nvlist_t *zplprops = NULL; 2088 struct mnttab mnt; 2089 char *mntopt_on = NULL; 2090 char *mntopt_off = NULL; 2091 boolean_t received = zfs_is_recvd_props_mode(zhp); 2092 2093 *source = NULL; 2094 2095 switch (prop) { 2096 case ZFS_PROP_ATIME: 2097 mntopt_on = MNTOPT_ATIME; 2098 mntopt_off = MNTOPT_NOATIME; 2099 break; 2100 2101 case ZFS_PROP_DEVICES: 2102 mntopt_on = MNTOPT_DEVICES; 2103 mntopt_off = MNTOPT_NODEVICES; 2104 break; 2105 2106 case ZFS_PROP_EXEC: 2107 mntopt_on = MNTOPT_EXEC; 2108 mntopt_off = MNTOPT_NOEXEC; 2109 break; 2110 2111 case ZFS_PROP_READONLY: 2112 mntopt_on = MNTOPT_RO; 2113 mntopt_off = MNTOPT_RW; 2114 break; 2115 2116 case ZFS_PROP_SETUID: 2117 mntopt_on = MNTOPT_SETUID; 2118 mntopt_off = MNTOPT_NOSETUID; 2119 break; 2120 2121 case ZFS_PROP_XATTR: 2122 mntopt_on = MNTOPT_XATTR; 2123 mntopt_off = MNTOPT_NOXATTR; 2124 break; 2125 2126 case ZFS_PROP_NBMAND: 2127 mntopt_on = MNTOPT_NBMAND; 2128 mntopt_off = MNTOPT_NONBMAND; 2129 break; 2130 2131 default: 2132 break; 2133 } 2134 2135 /* 2136 * Because looking up the mount options is potentially expensive 2137 * (iterating over all of /etc/mnttab), we defer its calculation until 2138 * we're looking up a property which requires its presence. 2139 */ 2140 if (!zhp->zfs_mntcheck && 2141 (mntopt_on != NULL || prop == ZFS_PROP_MOUNTED)) { 2142 libzfs_handle_t *hdl = zhp->zfs_hdl; 2143 struct mnttab entry; 2144 2145 if (libzfs_mnttab_find(hdl, zhp->zfs_name, &entry) == 0) { 2146 zhp->zfs_mntopts = zfs_strdup(hdl, 2147 entry.mnt_mntopts); 2148 if (zhp->zfs_mntopts == NULL) 2149 return (-1); 2150 } 2151 2152 zhp->zfs_mntcheck = B_TRUE; 2153 } 2154 2155 if (zhp->zfs_mntopts == NULL) 2156 mnt.mnt_mntopts = ""; 2157 else 2158 mnt.mnt_mntopts = zhp->zfs_mntopts; 2159 2160 switch (prop) { 2161 case ZFS_PROP_ATIME: 2162 case ZFS_PROP_DEVICES: 2163 case ZFS_PROP_EXEC: 2164 case ZFS_PROP_READONLY: 2165 case ZFS_PROP_SETUID: 2166 case ZFS_PROP_XATTR: 2167 case ZFS_PROP_NBMAND: 2168 *val = getprop_uint64(zhp, prop, source); 2169 2170 if (received) 2171 break; 2172 2173 if (hasmntopt(&mnt, mntopt_on) && !*val) { 2174 *val = B_TRUE; 2175 if (src) 2176 *src = ZPROP_SRC_TEMPORARY; 2177 } else if (hasmntopt(&mnt, mntopt_off) && *val) { 2178 *val = B_FALSE; 2179 if (src) 2180 *src = ZPROP_SRC_TEMPORARY; 2181 } 2182 break; 2183 2184 case ZFS_PROP_CANMOUNT: 2185 case ZFS_PROP_VOLSIZE: 2186 case ZFS_PROP_QUOTA: 2187 case ZFS_PROP_REFQUOTA: 2188 case ZFS_PROP_RESERVATION: 2189 case ZFS_PROP_REFRESERVATION: 2190 case ZFS_PROP_FILESYSTEM_LIMIT: 2191 case ZFS_PROP_SNAPSHOT_LIMIT: 2192 case ZFS_PROP_FILESYSTEM_COUNT: 2193 case ZFS_PROP_SNAPSHOT_COUNT: 2194 *val = getprop_uint64(zhp, prop, source); 2195 2196 if (*source == NULL) { 2197 /* not default, must be local */ 2198 *source = zhp->zfs_name; 2199 } 2200 break; 2201 2202 case ZFS_PROP_MOUNTED: 2203 *val = (zhp->zfs_mntopts != NULL); 2204 break; 2205 2206 case ZFS_PROP_NUMCLONES: 2207 *val = zhp->zfs_dmustats.dds_num_clones; 2208 break; 2209 2210 case ZFS_PROP_VERSION: 2211 case ZFS_PROP_NORMALIZE: 2212 case ZFS_PROP_UTF8ONLY: 2213 case ZFS_PROP_CASE: 2214 if (!zfs_prop_valid_for_type(prop, zhp->zfs_head_type) || 2215 zcmd_alloc_dst_nvlist(zhp->zfs_hdl, &zc, 0) != 0) 2216 return (-1); 2217 (void) strlcpy(zc.zc_name, zhp->zfs_name, sizeof (zc.zc_name)); 2218 if (zfs_ioctl(zhp->zfs_hdl, ZFS_IOC_OBJSET_ZPLPROPS, &zc)) { 2219 zcmd_free_nvlists(&zc); 2220 return (-1); 2221 } 2222 if (zcmd_read_dst_nvlist(zhp->zfs_hdl, &zc, &zplprops) != 0 || 2223 nvlist_lookup_uint64(zplprops, zfs_prop_to_name(prop), 2224 val) != 0) { 2225 zcmd_free_nvlists(&zc); 2226 return (-1); 2227 } 2228 nvlist_free(zplprops); 2229 zcmd_free_nvlists(&zc); 2230 break; 2231 2232 case ZFS_PROP_INCONSISTENT: 2233 *val = zhp->zfs_dmustats.dds_inconsistent; 2234 break; 2235 2236 default: 2237 switch (zfs_prop_get_type(prop)) { 2238 case PROP_TYPE_NUMBER: 2239 case PROP_TYPE_INDEX: 2240 *val = getprop_uint64(zhp, prop, source); 2241 /* 2242 * If we tried to use a default value for a 2243 * readonly property, it means that it was not 2244 * present. Note this only applies to "truly" 2245 * readonly properties, not set-once properties 2246 * like volblocksize. 2247 */ 2248 if (zfs_prop_readonly(prop) && 2249 !zfs_prop_setonce(prop) && 2250 *source != NULL && (*source)[0] == '\0') { 2251 *source = NULL; 2252 return (-1); 2253 } 2254 break; 2255 2256 case PROP_TYPE_STRING: 2257 default: 2258 zfs_error_aux(zhp->zfs_hdl, dgettext(TEXT_DOMAIN, 2259 "cannot get non-numeric property")); 2260 return (zfs_error(zhp->zfs_hdl, EZFS_BADPROP, 2261 dgettext(TEXT_DOMAIN, "internal error"))); 2262 } 2263 } 2264 2265 return (0); 2266} 2267 2268/* 2269 * Calculate the source type, given the raw source string. 2270 */ 2271static void 2272get_source(zfs_handle_t *zhp, zprop_source_t *srctype, char *source, 2273 char *statbuf, size_t statlen) 2274{ 2275 if (statbuf == NULL || *srctype == ZPROP_SRC_TEMPORARY) 2276 return; 2277 2278 if (source == NULL) { 2279 *srctype = ZPROP_SRC_NONE; 2280 } else if (source[0] == '\0') { 2281 *srctype = ZPROP_SRC_DEFAULT; 2282 } else if (strstr(source, ZPROP_SOURCE_VAL_RECVD) != NULL) { 2283 *srctype = ZPROP_SRC_RECEIVED; 2284 } else { 2285 if (strcmp(source, zhp->zfs_name) == 0) { 2286 *srctype = ZPROP_SRC_LOCAL; 2287 } else { 2288 (void) strlcpy(statbuf, source, statlen); 2289 *srctype = ZPROP_SRC_INHERITED; 2290 } 2291 } 2292 2293} 2294 2295int 2296zfs_prop_get_recvd(zfs_handle_t *zhp, const char *propname, char *propbuf, 2297 size_t proplen, boolean_t literal) 2298{ 2299 zfs_prop_t prop; 2300 int err = 0; 2301 2302 if (zhp->zfs_recvd_props == NULL) 2303 if (get_recvd_props_ioctl(zhp) != 0) 2304 return (-1); 2305 2306 prop = zfs_name_to_prop(propname); 2307 2308 if (prop != ZPROP_INVAL) { 2309 uint64_t cookie; 2310 if (!nvlist_exists(zhp->zfs_recvd_props, propname)) 2311 return (-1); 2312 zfs_set_recvd_props_mode(zhp, &cookie); 2313 err = zfs_prop_get(zhp, prop, propbuf, proplen, 2314 NULL, NULL, 0, literal); 2315 zfs_unset_recvd_props_mode(zhp, &cookie); 2316 } else { 2317 nvlist_t *propval; 2318 char *recvdval; 2319 if (nvlist_lookup_nvlist(zhp->zfs_recvd_props, 2320 propname, &propval) != 0) 2321 return (-1); 2322 verify(nvlist_lookup_string(propval, ZPROP_VALUE, 2323 &recvdval) == 0); 2324 (void) strlcpy(propbuf, recvdval, proplen); 2325 } 2326 2327 return (err == 0 ? 0 : -1); 2328} 2329 2330static int 2331get_clones_string(zfs_handle_t *zhp, char *propbuf, size_t proplen) 2332{ 2333 nvlist_t *value; 2334 nvpair_t *pair; 2335 2336 value = zfs_get_clones_nvl(zhp); 2337 if (value == NULL) 2338 return (-1); 2339 2340 propbuf[0] = '\0'; 2341 for (pair = nvlist_next_nvpair(value, NULL); pair != NULL; 2342 pair = nvlist_next_nvpair(value, pair)) { 2343 if (propbuf[0] != '\0') 2344 (void) strlcat(propbuf, ",", proplen); 2345 (void) strlcat(propbuf, nvpair_name(pair), proplen); 2346 } 2347 2348 return (0); 2349} 2350 2351struct get_clones_arg { 2352 uint64_t numclones; 2353 nvlist_t *value; 2354 const char *origin; 2355 char buf[ZFS_MAX_DATASET_NAME_LEN]; 2356}; 2357 2358int 2359get_clones_cb(zfs_handle_t *zhp, void *arg) 2360{ 2361 struct get_clones_arg *gca = arg; 2362 2363 if (gca->numclones == 0) { 2364 zfs_close(zhp); 2365 return (0); 2366 } 2367 2368 if (zfs_prop_get(zhp, ZFS_PROP_ORIGIN, gca->buf, sizeof (gca->buf), 2369 NULL, NULL, 0, B_TRUE) != 0) 2370 goto out; 2371 if (strcmp(gca->buf, gca->origin) == 0) { 2372 fnvlist_add_boolean(gca->value, zfs_get_name(zhp)); 2373 gca->numclones--; 2374 } 2375 2376out: 2377 (void) zfs_iter_children(zhp, get_clones_cb, gca); 2378 zfs_close(zhp); 2379 return (0); 2380} 2381 2382nvlist_t * 2383zfs_get_clones_nvl(zfs_handle_t *zhp) 2384{ 2385 nvlist_t *nv, *value; 2386 2387 if (nvlist_lookup_nvlist(zhp->zfs_props, 2388 zfs_prop_to_name(ZFS_PROP_CLONES), &nv) != 0) { 2389 struct get_clones_arg gca; 2390 2391 /* 2392 * if this is a snapshot, then the kernel wasn't able 2393 * to get the clones. Do it by slowly iterating. 2394 */ 2395 if (zhp->zfs_type != ZFS_TYPE_SNAPSHOT) 2396 return (NULL); 2397 if (nvlist_alloc(&nv, NV_UNIQUE_NAME, 0) != 0) 2398 return (NULL); 2399 if (nvlist_alloc(&value, NV_UNIQUE_NAME, 0) != 0) { 2400 nvlist_free(nv); 2401 return (NULL); 2402 } 2403 2404 gca.numclones = zfs_prop_get_int(zhp, ZFS_PROP_NUMCLONES); 2405 gca.value = value; 2406 gca.origin = zhp->zfs_name; 2407 2408 if (gca.numclones != 0) { 2409 zfs_handle_t *root; 2410 char pool[ZFS_MAX_DATASET_NAME_LEN]; 2411 char *cp = pool; 2412 2413 /* get the pool name */ 2414 (void) strlcpy(pool, zhp->zfs_name, sizeof (pool)); 2415 (void) strsep(&cp, "/@"); 2416 root = zfs_open(zhp->zfs_hdl, pool, 2417 ZFS_TYPE_FILESYSTEM); 2418 2419 (void) get_clones_cb(root, &gca); 2420 } 2421 2422 if (gca.numclones != 0 || 2423 nvlist_add_nvlist(nv, ZPROP_VALUE, value) != 0 || 2424 nvlist_add_nvlist(zhp->zfs_props, 2425 zfs_prop_to_name(ZFS_PROP_CLONES), nv) != 0) { 2426 nvlist_free(nv); 2427 nvlist_free(value); 2428 return (NULL); 2429 } 2430 nvlist_free(nv); 2431 nvlist_free(value); 2432 verify(0 == nvlist_lookup_nvlist(zhp->zfs_props, 2433 zfs_prop_to_name(ZFS_PROP_CLONES), &nv)); 2434 } 2435 2436 verify(nvlist_lookup_nvlist(nv, ZPROP_VALUE, &value) == 0); 2437 2438 return (value); 2439} 2440 2441/* 2442 * Accepts a property and value and checks that the value 2443 * matches the one found by the channel program. If they are 2444 * not equal, print both of them. 2445 */ 2446void 2447zcp_check(zfs_handle_t *zhp, zfs_prop_t prop, uint64_t intval, 2448 const char *strval) 2449{ 2450 if (!zhp->zfs_hdl->libzfs_prop_debug) 2451 return; 2452 int error; 2453 char *poolname = zhp->zpool_hdl->zpool_name; 2454 const char *program = 2455 "args = ...\n" 2456 "ds = args['dataset']\n" 2457 "prop = args['property']\n" 2458 "value, setpoint = zfs.get_prop(ds, prop)\n" 2459 "return {value=value, setpoint=setpoint}\n"; 2460 nvlist_t *outnvl; 2461 nvlist_t *retnvl; 2462 nvlist_t *argnvl = fnvlist_alloc(); 2463 2464 fnvlist_add_string(argnvl, "dataset", zhp->zfs_name); 2465 fnvlist_add_string(argnvl, "property", zfs_prop_to_name(prop)); 2466 2467 error = lzc_channel_program_nosync(poolname, program, 2468 10 * 1000 * 1000, 10 * 1024 * 1024, argnvl, &outnvl); 2469 2470 if (error == 0) { 2471 retnvl = fnvlist_lookup_nvlist(outnvl, "return"); 2472 if (zfs_prop_get_type(prop) == PROP_TYPE_NUMBER) { 2473 int64_t ans; 2474 error = nvlist_lookup_int64(retnvl, "value", &ans); 2475 if (error != 0) { 2476 (void) fprintf(stderr, "zcp check error: %u\n", 2477 error); 2478 return; 2479 } 2480 if (ans != intval) { 2481 (void) fprintf(stderr, 2482 "%s: zfs found %lld, but zcp found %lld\n", 2483 zfs_prop_to_name(prop), 2484 (longlong_t)intval, (longlong_t)ans); 2485 } 2486 } else { 2487 char *str_ans; 2488 error = nvlist_lookup_string(retnvl, "value", &str_ans); 2489 if (error != 0) { 2490 (void) fprintf(stderr, "zcp check error: %u\n", 2491 error); 2492 return; 2493 } 2494 if (strcmp(strval, str_ans) != 0) { 2495 (void) fprintf(stderr, 2496 "%s: zfs found %s, but zcp found %s\n", 2497 zfs_prop_to_name(prop), 2498 strval, str_ans); 2499 } 2500 } 2501 } else { 2502 (void) fprintf(stderr, 2503 "zcp check failed, channel program error: %u\n", error); 2504 } 2505 nvlist_free(argnvl); 2506 nvlist_free(outnvl); 2507} 2508 2509/* 2510 * Retrieve a property from the given object. If 'literal' is specified, then 2511 * numbers are left as exact values. Otherwise, numbers are converted to a 2512 * human-readable form. 2513 * 2514 * Returns 0 on success, or -1 on error. 2515 */ 2516int 2517zfs_prop_get(zfs_handle_t *zhp, zfs_prop_t prop, char *propbuf, size_t proplen, 2518 zprop_source_t *src, char *statbuf, size_t statlen, boolean_t literal) 2519{ 2520 char *source = NULL; 2521 uint64_t val; 2522 const char *str; 2523 const char *strval; 2524 boolean_t received = zfs_is_recvd_props_mode(zhp); 2525 2526 /* 2527 * Check to see if this property applies to our object 2528 */ 2529 if (!zfs_prop_valid_for_type(prop, zhp->zfs_type)) 2530 return (-1); 2531 2532 if (received && zfs_prop_readonly(prop)) 2533 return (-1); 2534 2535 if (src) 2536 *src = ZPROP_SRC_NONE; 2537 2538 switch (prop) { 2539 case ZFS_PROP_CREATION: 2540 /* 2541 * 'creation' is a time_t stored in the statistics. We convert 2542 * this into a string unless 'literal' is specified. 2543 */ 2544 { 2545 val = getprop_uint64(zhp, prop, &source); 2546 time_t time = (time_t)val; 2547 struct tm t; 2548 2549 if (literal || 2550 localtime_r(&time, &t) == NULL || 2551 strftime(propbuf, proplen, "%a %b %e %k:%M %Y", 2552 &t) == 0) 2553 (void) snprintf(propbuf, proplen, "%llu", val); 2554 } 2555 zcp_check(zhp, prop, val, NULL); 2556 break; 2557 2558 case ZFS_PROP_MOUNTPOINT: 2559 /* 2560 * Getting the precise mountpoint can be tricky. 2561 * 2562 * - for 'none' or 'legacy', return those values. 2563 * - for inherited mountpoints, we want to take everything 2564 * after our ancestor and append it to the inherited value. 2565 * 2566 * If the pool has an alternate root, we want to prepend that 2567 * root to any values we return. 2568 */ 2569 2570 str = getprop_string(zhp, prop, &source); 2571 2572 if (str[0] == '/') { 2573 char buf[MAXPATHLEN]; 2574 char *root = buf; 2575 const char *relpath; 2576 2577 /* 2578 * If we inherit the mountpoint, even from a dataset 2579 * with a received value, the source will be the path of 2580 * the dataset we inherit from. If source is 2581 * ZPROP_SOURCE_VAL_RECVD, the received value is not 2582 * inherited. 2583 */ 2584 if (strcmp(source, ZPROP_SOURCE_VAL_RECVD) == 0) { 2585 relpath = ""; 2586 } else { 2587 relpath = zhp->zfs_name + strlen(source); 2588 if (relpath[0] == '/') 2589 relpath++; 2590 } 2591 2592 if ((zpool_get_prop(zhp->zpool_hdl, 2593 ZPOOL_PROP_ALTROOT, buf, MAXPATHLEN, NULL, 2594 B_FALSE)) || (strcmp(root, "-") == 0)) 2595 root[0] = '\0'; 2596 /* 2597 * Special case an alternate root of '/'. This will 2598 * avoid having multiple leading slashes in the 2599 * mountpoint path. 2600 */ 2601 if (strcmp(root, "/") == 0) 2602 root++; 2603 2604 /* 2605 * If the mountpoint is '/' then skip over this 2606 * if we are obtaining either an alternate root or 2607 * an inherited mountpoint. 2608 */ 2609 if (str[1] == '\0' && (root[0] != '\0' || 2610 relpath[0] != '\0')) 2611 str++; 2612 2613 if (relpath[0] == '\0') 2614 (void) snprintf(propbuf, proplen, "%s%s", 2615 root, str); 2616 else 2617 (void) snprintf(propbuf, proplen, "%s%s%s%s", 2618 root, str, relpath[0] == '@' ? "" : "/", 2619 relpath); 2620 } else { 2621 /* 'legacy' or 'none' */ 2622 (void) strlcpy(propbuf, str, proplen); 2623 } 2624 zcp_check(zhp, prop, NULL, propbuf); 2625 break; 2626 2627 case ZFS_PROP_ORIGIN: 2628 str = getprop_string(zhp, prop, &source); 2629 if (str == NULL) 2630 return (-1); 2631 (void) strlcpy(propbuf, str, proplen); 2632 zcp_check(zhp, prop, NULL, str); 2633 break; 2634 2635 case ZFS_PROP_CLONES: 2636 if (get_clones_string(zhp, propbuf, proplen) != 0) 2637 return (-1); 2638 break; 2639 2640 case ZFS_PROP_QUOTA: 2641 case ZFS_PROP_REFQUOTA: 2642 case ZFS_PROP_RESERVATION: 2643 case ZFS_PROP_REFRESERVATION: 2644 2645 if (get_numeric_property(zhp, prop, src, &source, &val) != 0) 2646 return (-1); 2647 /* 2648 * If quota or reservation is 0, we translate this into 'none' 2649 * (unless literal is set), and indicate that it's the default 2650 * value. Otherwise, we print the number nicely and indicate 2651 * that its set locally. 2652 */ 2653 if (val == 0) { 2654 if (literal) 2655 (void) strlcpy(propbuf, "0", proplen); 2656 else 2657 (void) strlcpy(propbuf, "none", proplen); 2658 } else { 2659 if (literal) 2660 (void) snprintf(propbuf, proplen, "%llu", 2661 (u_longlong_t)val); 2662 else 2663 zfs_nicenum(val, propbuf, proplen); 2664 } 2665 zcp_check(zhp, prop, val, NULL); 2666 break; 2667 2668 case ZFS_PROP_FILESYSTEM_LIMIT: 2669 case ZFS_PROP_SNAPSHOT_LIMIT: 2670 case ZFS_PROP_FILESYSTEM_COUNT: 2671 case ZFS_PROP_SNAPSHOT_COUNT: 2672 2673 if (get_numeric_property(zhp, prop, src, &source, &val) != 0) 2674 return (-1); 2675 2676 /* 2677 * If limit is UINT64_MAX, we translate this into 'none' (unless 2678 * literal is set), and indicate that it's the default value. 2679 * Otherwise, we print the number nicely and indicate that it's 2680 * set locally. 2681 */ 2682 if (literal) { 2683 (void) snprintf(propbuf, proplen, "%llu", 2684 (u_longlong_t)val); 2685 } else if (val == UINT64_MAX) { 2686 (void) strlcpy(propbuf, "none", proplen); 2687 } else { 2688 zfs_nicenum(val, propbuf, proplen); 2689 } 2690 2691 zcp_check(zhp, prop, val, NULL); 2692 break; 2693 2694 case ZFS_PROP_REFRATIO: 2695 case ZFS_PROP_COMPRESSRATIO: 2696 if (get_numeric_property(zhp, prop, src, &source, &val) != 0) 2697 return (-1); 2698 (void) snprintf(propbuf, proplen, "%llu.%02llux", 2699 (u_longlong_t)(val / 100), 2700 (u_longlong_t)(val % 100)); 2701 zcp_check(zhp, prop, val, NULL); 2702 break; 2703 2704 case ZFS_PROP_TYPE: 2705 switch (zhp->zfs_type) { 2706 case ZFS_TYPE_FILESYSTEM: 2707 str = "filesystem"; 2708 break; 2709 case ZFS_TYPE_VOLUME: 2710 str = "volume"; 2711 break; 2712 case ZFS_TYPE_SNAPSHOT: 2713 str = "snapshot"; 2714 break; 2715 case ZFS_TYPE_BOOKMARK: 2716 str = "bookmark"; 2717 break; 2718 default: 2719 abort(); 2720 } 2721 (void) snprintf(propbuf, proplen, "%s", str); 2722 zcp_check(zhp, prop, NULL, propbuf); 2723 break; 2724 2725 case ZFS_PROP_MOUNTED: 2726 /* 2727 * The 'mounted' property is a pseudo-property that described 2728 * whether the filesystem is currently mounted. Even though 2729 * it's a boolean value, the typical values of "on" and "off" 2730 * don't make sense, so we translate to "yes" and "no". 2731 */ 2732 if (get_numeric_property(zhp, ZFS_PROP_MOUNTED, 2733 src, &source, &val) != 0) 2734 return (-1); 2735 if (val) 2736 (void) strlcpy(propbuf, "yes", proplen); 2737 else 2738 (void) strlcpy(propbuf, "no", proplen); 2739 break; 2740 2741 case ZFS_PROP_NAME: 2742 /* 2743 * The 'name' property is a pseudo-property derived from the 2744 * dataset name. It is presented as a real property to simplify 2745 * consumers. 2746 */ 2747 (void) strlcpy(propbuf, zhp->zfs_name, proplen); 2748 zcp_check(zhp, prop, NULL, propbuf); 2749 break; 2750 2751 case ZFS_PROP_MLSLABEL: 2752 { 2753#ifdef illumos 2754 m_label_t *new_sl = NULL; 2755 char *ascii = NULL; /* human readable label */ 2756 2757 (void) strlcpy(propbuf, 2758 getprop_string(zhp, prop, &source), proplen); 2759 2760 if (literal || (strcasecmp(propbuf, 2761 ZFS_MLSLABEL_DEFAULT) == 0)) 2762 break; 2763 2764 /* 2765 * Try to translate the internal hex string to 2766 * human-readable output. If there are any 2767 * problems just use the hex string. 2768 */ 2769 2770 if (str_to_label(propbuf, &new_sl, MAC_LABEL, 2771 L_NO_CORRECTION, NULL) == -1) { 2772 m_label_free(new_sl); 2773 break; 2774 } 2775 2776 if (label_to_str(new_sl, &ascii, M_LABEL, 2777 DEF_NAMES) != 0) { 2778 if (ascii) 2779 free(ascii); 2780 m_label_free(new_sl); 2781 break; 2782 } 2783 m_label_free(new_sl); 2784 2785 (void) strlcpy(propbuf, ascii, proplen); 2786 free(ascii); 2787#else /* !illumos */ 2788 propbuf[0] = '\0'; 2789#endif /* illumos */ 2790 } 2791 break; 2792 2793 case ZFS_PROP_GUID: 2794 case ZFS_PROP_CREATETXG: 2795 /* 2796 * GUIDs are stored as numbers, but they are identifiers. 2797 * We don't want them to be pretty printed, because pretty 2798 * printing mangles the ID into a truncated and useless value. 2799 */ 2800 if (get_numeric_property(zhp, prop, src, &source, &val) != 0) 2801 return (-1); 2802 (void) snprintf(propbuf, proplen, "%llu", (u_longlong_t)val); 2803 zcp_check(zhp, prop, val, NULL); 2804 break; 2805 2806 default: 2807 switch (zfs_prop_get_type(prop)) { 2808 case PROP_TYPE_NUMBER: 2809 if (get_numeric_property(zhp, prop, src, 2810 &source, &val) != 0) { 2811 return (-1); 2812 } 2813 2814 if (literal) { 2815 (void) snprintf(propbuf, proplen, "%llu", 2816 (u_longlong_t)val); 2817 } else { 2818 zfs_nicenum(val, propbuf, proplen); 2819 } 2820 zcp_check(zhp, prop, val, NULL); 2821 break; 2822 2823 case PROP_TYPE_STRING: 2824 str = getprop_string(zhp, prop, &source); 2825 if (str == NULL) 2826 return (-1); 2827 2828 (void) strlcpy(propbuf, str, proplen); 2829 zcp_check(zhp, prop, NULL, str); 2830 break; 2831 2832 case PROP_TYPE_INDEX: 2833 if (get_numeric_property(zhp, prop, src, 2834 &source, &val) != 0) 2835 return (-1); 2836 if (zfs_prop_index_to_string(prop, val, &strval) != 0) 2837 return (-1); 2838 2839 (void) strlcpy(propbuf, strval, proplen); 2840 zcp_check(zhp, prop, NULL, strval); 2841 break; 2842 2843 default: 2844 abort(); 2845 } 2846 } 2847 2848 get_source(zhp, src, source, statbuf, statlen); 2849 2850 return (0); 2851} 2852 2853/* 2854 * Utility function to get the given numeric property. Does no validation that 2855 * the given property is the appropriate type; should only be used with 2856 * hard-coded property types. 2857 */ 2858uint64_t 2859zfs_prop_get_int(zfs_handle_t *zhp, zfs_prop_t prop) 2860{ 2861 char *source; 2862 uint64_t val; 2863 2864 (void) get_numeric_property(zhp, prop, NULL, &source, &val); 2865 2866 return (val); 2867} 2868 2869int 2870zfs_prop_set_int(zfs_handle_t *zhp, zfs_prop_t prop, uint64_t val) 2871{ 2872 char buf[64]; 2873 2874 (void) snprintf(buf, sizeof (buf), "%llu", (longlong_t)val); 2875 return (zfs_prop_set(zhp, zfs_prop_to_name(prop), buf)); 2876} 2877 2878/* 2879 * Similar to zfs_prop_get(), but returns the value as an integer. 2880 */ 2881int 2882zfs_prop_get_numeric(zfs_handle_t *zhp, zfs_prop_t prop, uint64_t *value, 2883 zprop_source_t *src, char *statbuf, size_t statlen) 2884{ 2885 char *source; 2886 2887 /* 2888 * Check to see if this property applies to our object 2889 */ 2890 if (!zfs_prop_valid_for_type(prop, zhp->zfs_type)) { 2891 return (zfs_error_fmt(zhp->zfs_hdl, EZFS_PROPTYPE, 2892 dgettext(TEXT_DOMAIN, "cannot get property '%s'"), 2893 zfs_prop_to_name(prop))); 2894 } 2895 2896 if (src) 2897 *src = ZPROP_SRC_NONE; 2898 2899 if (get_numeric_property(zhp, prop, src, &source, value) != 0) 2900 return (-1); 2901 2902 get_source(zhp, src, source, statbuf, statlen); 2903 2904 return (0); 2905} 2906 2907static int 2908idmap_id_to_numeric_domain_rid(uid_t id, boolean_t isuser, 2909 char **domainp, idmap_rid_t *ridp) 2910{ 2911#ifdef illumos 2912 idmap_get_handle_t *get_hdl = NULL; 2913 idmap_stat status; 2914 int err = EINVAL; 2915 2916 if (idmap_get_create(&get_hdl) != IDMAP_SUCCESS) 2917 goto out; 2918 2919 if (isuser) { 2920 err = idmap_get_sidbyuid(get_hdl, id, 2921 IDMAP_REQ_FLG_USE_CACHE, domainp, ridp, &status); 2922 } else { 2923 err = idmap_get_sidbygid(get_hdl, id, 2924 IDMAP_REQ_FLG_USE_CACHE, domainp, ridp, &status); 2925 } 2926 if (err == IDMAP_SUCCESS && 2927 idmap_get_mappings(get_hdl) == IDMAP_SUCCESS && 2928 status == IDMAP_SUCCESS) 2929 err = 0; 2930 else 2931 err = EINVAL; 2932out: 2933 if (get_hdl) 2934 idmap_get_destroy(get_hdl); 2935 return (err); 2936#else /* !illumos */ 2937 assert(!"invalid code path"); 2938 return (EINVAL); // silence compiler warning 2939#endif /* illumos */ 2940} 2941 2942/* 2943 * convert the propname into parameters needed by kernel 2944 * Eg: userquota@ahrens -> ZFS_PROP_USERQUOTA, "", 126829 2945 * Eg: userused@matt@domain -> ZFS_PROP_USERUSED, "S-1-123-456", 789 2946 */ 2947static int 2948userquota_propname_decode(const char *propname, boolean_t zoned, 2949 zfs_userquota_prop_t *typep, char *domain, int domainlen, uint64_t *ridp) 2950{ 2951 zfs_userquota_prop_t type; 2952 char *cp, *end; 2953 char *numericsid = NULL; 2954 boolean_t isuser; 2955 2956 domain[0] = '\0'; 2957 *ridp = 0; 2958 /* Figure out the property type ({user|group}{quota|space}) */ 2959 for (type = 0; type < ZFS_NUM_USERQUOTA_PROPS; type++) { 2960 if (strncmp(propname, zfs_userquota_prop_prefixes[type], 2961 strlen(zfs_userquota_prop_prefixes[type])) == 0) 2962 break; 2963 } 2964 if (type == ZFS_NUM_USERQUOTA_PROPS) 2965 return (EINVAL); 2966 *typep = type; 2967 2968 isuser = (type == ZFS_PROP_USERQUOTA || 2969 type == ZFS_PROP_USERUSED); 2970 2971 cp = strchr(propname, '@') + 1; 2972 2973 if (strchr(cp, '@')) { 2974#ifdef illumos 2975 /* 2976 * It's a SID name (eg "user@domain") that needs to be 2977 * turned into S-1-domainID-RID. 2978 */ 2979 int flag = 0; 2980 idmap_stat stat, map_stat; 2981 uid_t pid; 2982 idmap_rid_t rid; 2983 idmap_get_handle_t *gh = NULL; 2984 2985 stat = idmap_get_create(&gh); 2986 if (stat != IDMAP_SUCCESS) { 2987 idmap_get_destroy(gh); 2988 return (ENOMEM); 2989 } 2990 if (zoned && getzoneid() == GLOBAL_ZONEID) 2991 return (ENOENT); 2992 if (isuser) { 2993 stat = idmap_getuidbywinname(cp, NULL, flag, &pid); 2994 if (stat < 0) 2995 return (ENOENT); 2996 stat = idmap_get_sidbyuid(gh, pid, flag, &numericsid, 2997 &rid, &map_stat); 2998 } else { 2999 stat = idmap_getgidbywinname(cp, NULL, flag, &pid); 3000 if (stat < 0) 3001 return (ENOENT); 3002 stat = idmap_get_sidbygid(gh, pid, flag, &numericsid, 3003 &rid, &map_stat); 3004 } 3005 if (stat < 0) { 3006 idmap_get_destroy(gh); 3007 return (ENOENT); 3008 } 3009 stat = idmap_get_mappings(gh); 3010 idmap_get_destroy(gh); 3011 3012 if (stat < 0) { 3013 return (ENOENT); 3014 } 3015 if (numericsid == NULL) 3016 return (ENOENT); 3017 cp = numericsid; 3018 *ridp = rid; 3019 /* will be further decoded below */ 3020#else /* !illumos */ 3021 return (ENOENT); 3022#endif /* illumos */ 3023 } 3024 3025 if (strncmp(cp, "S-1-", 4) == 0) { 3026 /* It's a numeric SID (eg "S-1-234-567-89") */ 3027 (void) strlcpy(domain, cp, domainlen); 3028 errno = 0; 3029 if (*ridp == 0) { 3030 cp = strrchr(domain, '-'); 3031 *cp = '\0'; 3032 cp++; 3033 *ridp = strtoull(cp, &end, 10); 3034 } else { 3035 end = ""; 3036 } 3037 if (numericsid) { 3038 free(numericsid); 3039 numericsid = NULL; 3040 } 3041 if (errno != 0 || *end != '\0') 3042 return (EINVAL); 3043 } else if (!isdigit(*cp)) { 3044 /* 3045 * It's a user/group name (eg "user") that needs to be 3046 * turned into a uid/gid 3047 */ 3048 if (zoned && getzoneid() == GLOBAL_ZONEID) 3049 return (ENOENT); 3050 if (isuser) { 3051 struct passwd *pw; 3052 pw = getpwnam(cp); 3053 if (pw == NULL) 3054 return (ENOENT); 3055 *ridp = pw->pw_uid; 3056 } else { 3057 struct group *gr; 3058 gr = getgrnam(cp); 3059 if (gr == NULL) 3060 return (ENOENT); 3061 *ridp = gr->gr_gid; 3062 } 3063 } else { 3064 /* It's a user/group ID (eg "12345"). */ 3065 uid_t id = strtoul(cp, &end, 10); 3066 idmap_rid_t rid; 3067 char *mapdomain; 3068 3069 if (*end != '\0') 3070 return (EINVAL); 3071 if (id > MAXUID) { 3072 /* It's an ephemeral ID. */ 3073 if (idmap_id_to_numeric_domain_rid(id, isuser, 3074 &mapdomain, &rid) != 0) 3075 return (ENOENT); 3076 (void) strlcpy(domain, mapdomain, domainlen); 3077 *ridp = rid; 3078 } else { 3079 *ridp = id; 3080 } 3081 } 3082 3083 ASSERT3P(numericsid, ==, NULL); 3084 return (0); 3085} 3086 3087static int 3088zfs_prop_get_userquota_common(zfs_handle_t *zhp, const char *propname, 3089 uint64_t *propvalue, zfs_userquota_prop_t *typep) 3090{ 3091 int err; 3092 zfs_cmd_t zc = { 0 }; 3093 3094 (void) strlcpy(zc.zc_name, zhp->zfs_name, sizeof (zc.zc_name)); 3095 3096 err = userquota_propname_decode(propname, 3097 zfs_prop_get_int(zhp, ZFS_PROP_ZONED), 3098 typep, zc.zc_value, sizeof (zc.zc_value), &zc.zc_guid); 3099 zc.zc_objset_type = *typep; 3100 if (err) 3101 return (err); 3102 3103 err = ioctl(zhp->zfs_hdl->libzfs_fd, ZFS_IOC_USERSPACE_ONE, &zc); 3104 if (err) 3105 return (err); 3106 3107 *propvalue = zc.zc_cookie; 3108 return (0); 3109} 3110 3111int 3112zfs_prop_get_userquota_int(zfs_handle_t *zhp, const char *propname, 3113 uint64_t *propvalue) 3114{ 3115 zfs_userquota_prop_t type; 3116 3117 return (zfs_prop_get_userquota_common(zhp, propname, propvalue, 3118 &type)); 3119} 3120 3121int 3122zfs_prop_get_userquota(zfs_handle_t *zhp, const char *propname, 3123 char *propbuf, int proplen, boolean_t literal) 3124{ 3125 int err; 3126 uint64_t propvalue; 3127 zfs_userquota_prop_t type; 3128 3129 err = zfs_prop_get_userquota_common(zhp, propname, &propvalue, 3130 &type); 3131 3132 if (err) 3133 return (err); 3134 3135 if (literal) { 3136 (void) snprintf(propbuf, proplen, "%llu", propvalue); 3137 } else if (propvalue == 0 && 3138 (type == ZFS_PROP_USERQUOTA || type == ZFS_PROP_GROUPQUOTA)) { 3139 (void) strlcpy(propbuf, "none", proplen); 3140 } else { 3141 zfs_nicenum(propvalue, propbuf, proplen); 3142 } 3143 return (0); 3144} 3145 3146int 3147zfs_prop_get_written_int(zfs_handle_t *zhp, const char *propname, 3148 uint64_t *propvalue) 3149{ 3150 int err; 3151 zfs_cmd_t zc = { 0 }; 3152 const char *snapname; 3153 3154 (void) strlcpy(zc.zc_name, zhp->zfs_name, sizeof (zc.zc_name)); 3155 3156 snapname = strchr(propname, '@') + 1; 3157 if (strchr(snapname, '@')) { 3158 (void) strlcpy(zc.zc_value, snapname, sizeof (zc.zc_value)); 3159 } else { 3160 /* snapname is the short name, append it to zhp's fsname */ 3161 char *cp; 3162 3163 (void) strlcpy(zc.zc_value, zhp->zfs_name, 3164 sizeof (zc.zc_value)); 3165 cp = strchr(zc.zc_value, '@'); 3166 if (cp != NULL) 3167 *cp = '\0'; 3168 (void) strlcat(zc.zc_value, "@", sizeof (zc.zc_value)); 3169 (void) strlcat(zc.zc_value, snapname, sizeof (zc.zc_value)); 3170 } 3171 3172 err = ioctl(zhp->zfs_hdl->libzfs_fd, ZFS_IOC_SPACE_WRITTEN, &zc); 3173 if (err) 3174 return (err); 3175 3176 *propvalue = zc.zc_cookie; 3177 return (0); 3178} 3179 3180int 3181zfs_prop_get_written(zfs_handle_t *zhp, const char *propname, 3182 char *propbuf, int proplen, boolean_t literal) 3183{ 3184 int err; 3185 uint64_t propvalue; 3186 3187 err = zfs_prop_get_written_int(zhp, propname, &propvalue); 3188 3189 if (err) 3190 return (err); 3191 3192 if (literal) { 3193 (void) snprintf(propbuf, proplen, "%llu", propvalue); 3194 } else { 3195 zfs_nicenum(propvalue, propbuf, proplen); 3196 } 3197 return (0); 3198} 3199 3200/* 3201 * Returns the name of the given zfs handle. 3202 */ 3203const char * 3204zfs_get_name(const zfs_handle_t *zhp) 3205{ 3206 return (zhp->zfs_name); 3207} 3208 3209/* 3210 * Returns the name of the parent pool for the given zfs handle. 3211 */ 3212const char * 3213zfs_get_pool_name(const zfs_handle_t *zhp) 3214{ 3215 return (zhp->zpool_hdl->zpool_name); 3216} 3217 3218/* 3219 * Returns the type of the given zfs handle. 3220 */ 3221zfs_type_t 3222zfs_get_type(const zfs_handle_t *zhp) 3223{ 3224 return (zhp->zfs_type); 3225} 3226 3227/* 3228 * Is one dataset name a child dataset of another? 3229 * 3230 * Needs to handle these cases: 3231 * Dataset 1 "a/foo" "a/foo" "a/foo" "a/foo" 3232 * Dataset 2 "a/fo" "a/foobar" "a/bar/baz" "a/foo/bar" 3233 * Descendant? No. No. No. Yes. 3234 */ 3235static boolean_t 3236is_descendant(const char *ds1, const char *ds2) 3237{ 3238 size_t d1len = strlen(ds1); 3239 3240 /* ds2 can't be a descendant if it's smaller */ 3241 if (strlen(ds2) < d1len) 3242 return (B_FALSE); 3243 3244 /* otherwise, compare strings and verify that there's a '/' char */ 3245 return (ds2[d1len] == '/' && (strncmp(ds1, ds2, d1len) == 0)); 3246} 3247 3248/* 3249 * Given a complete name, return just the portion that refers to the parent. 3250 * Will return -1 if there is no parent (path is just the name of the 3251 * pool). 3252 */ 3253static int 3254parent_name(const char *path, char *buf, size_t buflen) 3255{ 3256 char *slashp; 3257 3258 (void) strlcpy(buf, path, buflen); 3259 3260 if ((slashp = strrchr(buf, '/')) == NULL) 3261 return (-1); 3262 *slashp = '\0'; 3263 3264 return (0); 3265} 3266 3267/* 3268 * If accept_ancestor is false, then check to make sure that the given path has 3269 * a parent, and that it exists. If accept_ancestor is true, then find the 3270 * closest existing ancestor for the given path. In prefixlen return the 3271 * length of already existing prefix of the given path. We also fetch the 3272 * 'zoned' property, which is used to validate property settings when creating 3273 * new datasets. 3274 */ 3275static int 3276check_parents(libzfs_handle_t *hdl, const char *path, uint64_t *zoned, 3277 boolean_t accept_ancestor, int *prefixlen) 3278{ 3279 zfs_cmd_t zc = { 0 }; 3280 char parent[ZFS_MAX_DATASET_NAME_LEN]; 3281 char *slash; 3282 zfs_handle_t *zhp; 3283 char errbuf[1024]; 3284 uint64_t is_zoned; 3285 3286 (void) snprintf(errbuf, sizeof (errbuf), 3287 dgettext(TEXT_DOMAIN, "cannot create '%s'"), path); 3288 3289 /* get parent, and check to see if this is just a pool */ 3290 if (parent_name(path, parent, sizeof (parent)) != 0) { 3291 zfs_error_aux(hdl, dgettext(TEXT_DOMAIN, 3292 "missing dataset name")); 3293 return (zfs_error(hdl, EZFS_INVALIDNAME, errbuf)); 3294 } 3295 3296 /* check to see if the pool exists */ 3297 if ((slash = strchr(parent, '/')) == NULL) 3298 slash = parent + strlen(parent); 3299 (void) strncpy(zc.zc_name, parent, slash - parent); 3300 zc.zc_name[slash - parent] = '\0'; 3301 if (ioctl(hdl->libzfs_fd, ZFS_IOC_OBJSET_STATS, &zc) != 0 && 3302 errno == ENOENT) { 3303 zfs_error_aux(hdl, dgettext(TEXT_DOMAIN, 3304 "no such pool '%s'"), zc.zc_name); 3305 return (zfs_error(hdl, EZFS_NOENT, errbuf)); 3306 } 3307 3308 /* check to see if the parent dataset exists */ 3309 while ((zhp = make_dataset_handle(hdl, parent)) == NULL) { 3310 if (errno == ENOENT && accept_ancestor) { 3311 /* 3312 * Go deeper to find an ancestor, give up on top level. 3313 */ 3314 if (parent_name(parent, parent, sizeof (parent)) != 0) { 3315 zfs_error_aux(hdl, dgettext(TEXT_DOMAIN, 3316 "no such pool '%s'"), zc.zc_name); 3317 return (zfs_error(hdl, EZFS_NOENT, errbuf)); 3318 } 3319 } else if (errno == ENOENT) { 3320 zfs_error_aux(hdl, dgettext(TEXT_DOMAIN, 3321 "parent does not exist")); 3322 return (zfs_error(hdl, EZFS_NOENT, errbuf)); 3323 } else 3324 return (zfs_standard_error(hdl, errno, errbuf)); 3325 } 3326 3327 is_zoned = zfs_prop_get_int(zhp, ZFS_PROP_ZONED); 3328 if (zoned != NULL) 3329 *zoned = is_zoned; 3330 3331 /* we are in a non-global zone, but parent is in the global zone */ 3332 if (getzoneid() != GLOBAL_ZONEID && !is_zoned) { 3333 (void) zfs_standard_error(hdl, EPERM, errbuf); 3334 zfs_close(zhp); 3335 return (-1); 3336 } 3337 3338 /* make sure parent is a filesystem */ 3339 if (zfs_get_type(zhp) != ZFS_TYPE_FILESYSTEM) { 3340 zfs_error_aux(hdl, dgettext(TEXT_DOMAIN, 3341 "parent is not a filesystem")); 3342 (void) zfs_error(hdl, EZFS_BADTYPE, errbuf); 3343 zfs_close(zhp); 3344 return (-1); 3345 } 3346 3347 zfs_close(zhp); 3348 if (prefixlen != NULL) 3349 *prefixlen = strlen(parent); 3350 return (0); 3351} 3352 3353/* 3354 * Finds whether the dataset of the given type(s) exists. 3355 */ 3356boolean_t 3357zfs_dataset_exists(libzfs_handle_t *hdl, const char *path, zfs_type_t types) 3358{ 3359 zfs_handle_t *zhp; 3360 3361 if (!zfs_validate_name(hdl, path, types, B_FALSE)) 3362 return (B_FALSE); 3363 3364 /* 3365 * Try to get stats for the dataset, which will tell us if it exists. 3366 */ 3367 if ((zhp = make_dataset_handle(hdl, path)) != NULL) { 3368 int ds_type = zhp->zfs_type; 3369 3370 zfs_close(zhp); 3371 if (types & ds_type) 3372 return (B_TRUE); 3373 } 3374 return (B_FALSE); 3375} 3376 3377/* 3378 * Given a path to 'target', create all the ancestors between 3379 * the prefixlen portion of the path, and the target itself. 3380 * Fail if the initial prefixlen-ancestor does not already exist. 3381 */ 3382int 3383create_parents(libzfs_handle_t *hdl, char *target, int prefixlen) 3384{ 3385 zfs_handle_t *h; 3386 char *cp; 3387 const char *opname; 3388 3389 /* make sure prefix exists */ 3390 cp = target + prefixlen; 3391 if (*cp != '/') { 3392 assert(strchr(cp, '/') == NULL); 3393 h = zfs_open(hdl, target, ZFS_TYPE_FILESYSTEM); 3394 } else { 3395 *cp = '\0'; 3396 h = zfs_open(hdl, target, ZFS_TYPE_FILESYSTEM); 3397 *cp = '/'; 3398 } 3399 if (h == NULL) 3400 return (-1); 3401 zfs_close(h); 3402 3403 /* 3404 * Attempt to create, mount, and share any ancestor filesystems, 3405 * up to the prefixlen-long one. 3406 */ 3407 for (cp = target + prefixlen + 1; 3408 (cp = strchr(cp, '/')) != NULL; *cp = '/', cp++) { 3409 3410 *cp = '\0'; 3411 3412 h = make_dataset_handle(hdl, target); 3413 if (h) { 3414 /* it already exists, nothing to do here */ 3415 zfs_close(h); 3416 continue; 3417 } 3418 3419 if (zfs_create(hdl, target, ZFS_TYPE_FILESYSTEM, 3420 NULL) != 0) { 3421 opname = dgettext(TEXT_DOMAIN, "create"); 3422 goto ancestorerr; 3423 } 3424 3425 h = zfs_open(hdl, target, ZFS_TYPE_FILESYSTEM); 3426 if (h == NULL) { 3427 opname = dgettext(TEXT_DOMAIN, "open"); 3428 goto ancestorerr; 3429 } 3430 3431 if (zfs_mount(h, NULL, 0) != 0) { 3432 opname = dgettext(TEXT_DOMAIN, "mount"); 3433 goto ancestorerr; 3434 } 3435 3436 if (zfs_share(h) != 0) { 3437 opname = dgettext(TEXT_DOMAIN, "share"); 3438 goto ancestorerr; 3439 } 3440 3441 zfs_close(h); 3442 } 3443 3444 return (0); 3445 3446ancestorerr: 3447 zfs_error_aux(hdl, dgettext(TEXT_DOMAIN, 3448 "failed to %s ancestor '%s'"), opname, target); 3449 return (-1); 3450} 3451 3452/* 3453 * Creates non-existing ancestors of the given path. 3454 */ 3455int 3456zfs_create_ancestors(libzfs_handle_t *hdl, const char *path) 3457{ 3458 int prefix; 3459 char *path_copy; 3460 char errbuf[1024]; 3461 int rc = 0; 3462 3463 (void) snprintf(errbuf, sizeof (errbuf), dgettext(TEXT_DOMAIN, 3464 "cannot create '%s'"), path); 3465 3466 /* 3467 * Check that we are not passing the nesting limit 3468 * before we start creating any ancestors. 3469 */ 3470 if (dataset_nestcheck(path) != 0) { 3471 zfs_error_aux(hdl, dgettext(TEXT_DOMAIN, 3472 "maximum name nesting depth exceeded")); 3473 return (zfs_error(hdl, EZFS_INVALIDNAME, errbuf)); 3474 } 3475 3476 if (check_parents(hdl, path, NULL, B_TRUE, &prefix) != 0) 3477 return (-1); 3478 3479 if ((path_copy = strdup(path)) != NULL) { 3480 rc = create_parents(hdl, path_copy, prefix); 3481 free(path_copy); 3482 } 3483 if (path_copy == NULL || rc != 0) 3484 return (-1); 3485 3486 return (0); 3487} 3488 3489/* 3490 * Create a new filesystem or volume. 3491 */ 3492int 3493zfs_create(libzfs_handle_t *hdl, const char *path, zfs_type_t type, 3494 nvlist_t *props) 3495{ 3496 int ret; 3497 uint64_t size = 0; 3498 uint64_t blocksize = zfs_prop_default_numeric(ZFS_PROP_VOLBLOCKSIZE); 3499 char errbuf[1024]; 3500 uint64_t zoned; 3501 enum lzc_dataset_type ost; 3502 zpool_handle_t *zpool_handle; 3503 3504 (void) snprintf(errbuf, sizeof (errbuf), dgettext(TEXT_DOMAIN, 3505 "cannot create '%s'"), path); 3506 3507 /* validate the path, taking care to note the extended error message */ 3508 if (!zfs_validate_name(hdl, path, type, B_TRUE)) 3509 return (zfs_error(hdl, EZFS_INVALIDNAME, errbuf)); 3510 3511 if (dataset_nestcheck(path) != 0) { 3512 zfs_error_aux(hdl, dgettext(TEXT_DOMAIN, 3513 "maximum name nesting depth exceeded")); 3514 return (zfs_error(hdl, EZFS_INVALIDNAME, errbuf)); 3515 } 3516 3517 /* validate parents exist */ 3518 if (check_parents(hdl, path, &zoned, B_FALSE, NULL) != 0) 3519 return (-1); 3520 3521 /* 3522 * The failure modes when creating a dataset of a different type over 3523 * one that already exists is a little strange. In particular, if you 3524 * try to create a dataset on top of an existing dataset, the ioctl() 3525 * will return ENOENT, not EEXIST. To prevent this from happening, we 3526 * first try to see if the dataset exists. 3527 */ 3528 if (zfs_dataset_exists(hdl, path, ZFS_TYPE_DATASET)) { 3529 zfs_error_aux(hdl, dgettext(TEXT_DOMAIN, 3530 "dataset already exists")); 3531 return (zfs_error(hdl, EZFS_EXISTS, errbuf)); 3532 } 3533 3534 if (type == ZFS_TYPE_VOLUME) 3535 ost = LZC_DATSET_TYPE_ZVOL; 3536 else 3537 ost = LZC_DATSET_TYPE_ZFS; 3538 3539 /* open zpool handle for prop validation */ 3540 char pool_path[ZFS_MAX_DATASET_NAME_LEN]; 3541 (void) strlcpy(pool_path, path, sizeof (pool_path)); 3542 3543 /* truncate pool_path at first slash */ 3544 char *p = strchr(pool_path, '/'); 3545 if (p != NULL) 3546 *p = '\0'; 3547 3548 if ((zpool_handle = zpool_open(hdl, pool_path)) == NULL) 3549 return (-1); 3550 3551 if (props && (props = zfs_valid_proplist(hdl, type, props, 3552 zoned, NULL, zpool_handle, errbuf)) == 0) { 3553 zpool_close(zpool_handle); 3554 return (-1); 3555 } 3556 zpool_close(zpool_handle); 3557 3558 if (type == ZFS_TYPE_VOLUME) { 3559 /* 3560 * If we are creating a volume, the size and block size must 3561 * satisfy a few restraints. First, the blocksize must be a 3562 * valid block size between SPA_{MIN,MAX}BLOCKSIZE. Second, the 3563 * volsize must be a multiple of the block size, and cannot be 3564 * zero. 3565 */ 3566 if (props == NULL || nvlist_lookup_uint64(props, 3567 zfs_prop_to_name(ZFS_PROP_VOLSIZE), &size) != 0) { 3568 nvlist_free(props); 3569 zfs_error_aux(hdl, dgettext(TEXT_DOMAIN, 3570 "missing volume size")); 3571 return (zfs_error(hdl, EZFS_BADPROP, errbuf)); 3572 } 3573 3574 if ((ret = nvlist_lookup_uint64(props, 3575 zfs_prop_to_name(ZFS_PROP_VOLBLOCKSIZE), 3576 &blocksize)) != 0) { 3577 if (ret == ENOENT) { 3578 blocksize = zfs_prop_default_numeric( 3579 ZFS_PROP_VOLBLOCKSIZE); 3580 } else { 3581 nvlist_free(props); 3582 zfs_error_aux(hdl, dgettext(TEXT_DOMAIN, 3583 "missing volume block size")); 3584 return (zfs_error(hdl, EZFS_BADPROP, errbuf)); 3585 } 3586 } 3587 3588 if (size == 0) { 3589 nvlist_free(props); 3590 zfs_error_aux(hdl, dgettext(TEXT_DOMAIN, 3591 "volume size cannot be zero")); 3592 return (zfs_error(hdl, EZFS_BADPROP, errbuf)); 3593 } 3594 3595 if (size % blocksize != 0) { 3596 nvlist_free(props); 3597 zfs_error_aux(hdl, dgettext(TEXT_DOMAIN, 3598 "volume size must be a multiple of volume block " 3599 "size")); 3600 return (zfs_error(hdl, EZFS_BADPROP, errbuf)); 3601 } 3602 } 3603 3604 /* create the dataset */ 3605 ret = lzc_create(path, ost, props); 3606 nvlist_free(props); 3607 3608 /* check for failure */ 3609 if (ret != 0) { 3610 char parent[ZFS_MAX_DATASET_NAME_LEN]; 3611 (void) parent_name(path, parent, sizeof (parent)); 3612 3613 switch (errno) { 3614 case ENOENT: 3615 zfs_error_aux(hdl, dgettext(TEXT_DOMAIN, 3616 "no such parent '%s'"), parent); 3617 return (zfs_error(hdl, EZFS_NOENT, errbuf)); 3618 3619 case ENOTSUP: 3620 zfs_error_aux(hdl, dgettext(TEXT_DOMAIN, 3621 "pool must be upgraded to set this " 3622 "property or value")); 3623 return (zfs_error(hdl, EZFS_BADVERSION, errbuf)); 3624 case ERANGE: 3625 zfs_error_aux(hdl, dgettext(TEXT_DOMAIN, 3626 "invalid property value(s) specified")); 3627 return (zfs_error(hdl, EZFS_BADPROP, errbuf)); 3628#ifdef _ILP32 3629 case EOVERFLOW: 3630 /* 3631 * This platform can't address a volume this big. 3632 */ 3633 if (type == ZFS_TYPE_VOLUME) 3634 return (zfs_error(hdl, EZFS_VOLTOOBIG, 3635 errbuf)); 3636#endif 3637 /* FALLTHROUGH */ 3638 default: 3639 return (zfs_standard_error(hdl, errno, errbuf)); 3640 } 3641 } 3642 3643 return (0); 3644} 3645 3646/* 3647 * Destroys the given dataset. The caller must make sure that the filesystem 3648 * isn't mounted, and that there are no active dependents. If the file system 3649 * does not exist this function does nothing. 3650 */ 3651int 3652zfs_destroy(zfs_handle_t *zhp, boolean_t defer) 3653{ 3654 int error; 3655 3656 if (zhp->zfs_type != ZFS_TYPE_SNAPSHOT && defer) 3657 return (EINVAL); 3658 3659 if (zhp->zfs_type == ZFS_TYPE_BOOKMARK) { 3660 nvlist_t *nv = fnvlist_alloc(); 3661 fnvlist_add_boolean(nv, zhp->zfs_name); 3662 error = lzc_destroy_bookmarks(nv, NULL); 3663 fnvlist_free(nv); 3664 if (error != 0) { 3665 return (zfs_standard_error_fmt(zhp->zfs_hdl, error, 3666 dgettext(TEXT_DOMAIN, "cannot destroy '%s'"), 3667 zhp->zfs_name)); 3668 } 3669 return (0); 3670 } 3671 3672 if (zhp->zfs_type == ZFS_TYPE_SNAPSHOT) { 3673 nvlist_t *nv = fnvlist_alloc(); 3674 fnvlist_add_boolean(nv, zhp->zfs_name); 3675 error = lzc_destroy_snaps(nv, defer, NULL); 3676 fnvlist_free(nv); 3677 } else { 3678 error = lzc_destroy(zhp->zfs_name); 3679 } 3680 3681 if (error != 0 && error != ENOENT) { 3682 return (zfs_standard_error_fmt(zhp->zfs_hdl, errno, 3683 dgettext(TEXT_DOMAIN, "cannot destroy '%s'"), 3684 zhp->zfs_name)); 3685 } 3686 3687 remove_mountpoint(zhp); 3688 3689 return (0); 3690} 3691 3692struct destroydata { 3693 nvlist_t *nvl; 3694 const char *snapname; 3695}; 3696 3697static int 3698zfs_check_snap_cb(zfs_handle_t *zhp, void *arg) 3699{ 3700 struct destroydata *dd = arg; 3701 char name[ZFS_MAX_DATASET_NAME_LEN]; 3702 int rv = 0; 3703 3704 (void) snprintf(name, sizeof (name), 3705 "%s@%s", zhp->zfs_name, dd->snapname); 3706 3707 if (lzc_exists(name)) 3708 verify(nvlist_add_boolean(dd->nvl, name) == 0); 3709 3710 rv = zfs_iter_filesystems(zhp, zfs_check_snap_cb, dd); 3711 zfs_close(zhp); 3712 return (rv); 3713} 3714 3715/* 3716 * Destroys all snapshots with the given name in zhp & descendants. 3717 */ 3718int 3719zfs_destroy_snaps(zfs_handle_t *zhp, char *snapname, boolean_t defer) 3720{ 3721 int ret; 3722 struct destroydata dd = { 0 }; 3723 3724 dd.snapname = snapname; 3725 verify(nvlist_alloc(&dd.nvl, NV_UNIQUE_NAME, 0) == 0); 3726 (void) zfs_check_snap_cb(zfs_handle_dup(zhp), &dd); 3727 3728 if (nvlist_empty(dd.nvl)) { 3729 ret = zfs_standard_error_fmt(zhp->zfs_hdl, ENOENT, 3730 dgettext(TEXT_DOMAIN, "cannot destroy '%s@%s'"), 3731 zhp->zfs_name, snapname); 3732 } else { 3733 ret = zfs_destroy_snaps_nvl(zhp->zfs_hdl, dd.nvl, defer); 3734 } 3735 nvlist_free(dd.nvl); 3736 return (ret); 3737} 3738 3739/* 3740 * Destroys all the snapshots named in the nvlist. 3741 */ 3742int 3743zfs_destroy_snaps_nvl(libzfs_handle_t *hdl, nvlist_t *snaps, boolean_t defer) 3744{ 3745 int ret; 3746 nvlist_t *errlist = NULL; 3747 3748 ret = lzc_destroy_snaps(snaps, defer, &errlist); 3749 3750 if (ret == 0) { 3751 nvlist_free(errlist); 3752 return (0); 3753 } 3754 3755 if (nvlist_empty(errlist)) { 3756 char errbuf[1024]; 3757 (void) snprintf(errbuf, sizeof (errbuf), 3758 dgettext(TEXT_DOMAIN, "cannot destroy snapshots")); 3759 3760 ret = zfs_standard_error(hdl, ret, errbuf); 3761 } 3762 for (nvpair_t *pair = nvlist_next_nvpair(errlist, NULL); 3763 pair != NULL; pair = nvlist_next_nvpair(errlist, pair)) { 3764 char errbuf[1024]; 3765 (void) snprintf(errbuf, sizeof (errbuf), 3766 dgettext(TEXT_DOMAIN, "cannot destroy snapshot %s"), 3767 nvpair_name(pair)); 3768 3769 switch (fnvpair_value_int32(pair)) { 3770 case EEXIST: 3771 zfs_error_aux(hdl, 3772 dgettext(TEXT_DOMAIN, "snapshot is cloned")); 3773 ret = zfs_error(hdl, EZFS_EXISTS, errbuf); 3774 break; 3775 default: 3776 ret = zfs_standard_error(hdl, errno, errbuf); 3777 break; 3778 } 3779 } 3780 3781 nvlist_free(errlist); 3782 return (ret); 3783} 3784 3785/* 3786 * Clones the given dataset. The target must be of the same type as the source. 3787 */ 3788int 3789zfs_clone(zfs_handle_t *zhp, const char *target, nvlist_t *props) 3790{ 3791 char parent[ZFS_MAX_DATASET_NAME_LEN]; 3792 int ret; 3793 char errbuf[1024]; 3794 libzfs_handle_t *hdl = zhp->zfs_hdl; 3795 uint64_t zoned; 3796 3797 assert(zhp->zfs_type == ZFS_TYPE_SNAPSHOT); 3798 3799 (void) snprintf(errbuf, sizeof (errbuf), dgettext(TEXT_DOMAIN, 3800 "cannot create '%s'"), target); 3801 3802 /* validate the target/clone name */ 3803 if (!zfs_validate_name(hdl, target, ZFS_TYPE_FILESYSTEM, B_TRUE)) 3804 return (zfs_error(hdl, EZFS_INVALIDNAME, errbuf)); 3805 3806 /* validate parents exist */ 3807 if (check_parents(hdl, target, &zoned, B_FALSE, NULL) != 0) 3808 return (-1); 3809 3810 (void) parent_name(target, parent, sizeof (parent)); 3811 3812 /* do the clone */ 3813 3814 if (props) { 3815 zfs_type_t type; 3816 3817 if (ZFS_IS_VOLUME(zhp)) { 3818 type = ZFS_TYPE_VOLUME; 3819 } else { 3820 type = ZFS_TYPE_FILESYSTEM; 3821 } 3822 if ((props = zfs_valid_proplist(hdl, type, props, zoned, 3823 zhp, zhp->zpool_hdl, errbuf)) == NULL) 3824 return (-1); 3825 if (zfs_fix_auto_resv(zhp, props) == -1) { 3826 nvlist_free(props); 3827 return (-1); 3828 } 3829 } 3830 3831 ret = lzc_clone(target, zhp->zfs_name, props); 3832 nvlist_free(props); 3833 3834 if (ret != 0) { 3835 switch (errno) { 3836 3837 case ENOENT: 3838 /* 3839 * The parent doesn't exist. We should have caught this 3840 * above, but there may a race condition that has since 3841 * destroyed the parent. 3842 * 3843 * At this point, we don't know whether it's the source 3844 * that doesn't exist anymore, or whether the target 3845 * dataset doesn't exist. 3846 */ 3847 zfs_error_aux(zhp->zfs_hdl, dgettext(TEXT_DOMAIN, 3848 "no such parent '%s'"), parent); 3849 return (zfs_error(zhp->zfs_hdl, EZFS_NOENT, errbuf)); 3850 3851 case EXDEV: 3852 zfs_error_aux(zhp->zfs_hdl, dgettext(TEXT_DOMAIN, 3853 "source and target pools differ")); 3854 return (zfs_error(zhp->zfs_hdl, EZFS_CROSSTARGET, 3855 errbuf)); 3856 3857 default: 3858 return (zfs_standard_error(zhp->zfs_hdl, errno, 3859 errbuf)); 3860 } 3861 } 3862 3863 return (ret); 3864} 3865 3866/* 3867 * Promotes the given clone fs to be the clone parent. 3868 */ 3869int 3870zfs_promote(zfs_handle_t *zhp) 3871{ 3872 libzfs_handle_t *hdl = zhp->zfs_hdl; 3873 char snapname[ZFS_MAX_DATASET_NAME_LEN]; 3874 int ret; 3875 char errbuf[1024]; 3876 3877 (void) snprintf(errbuf, sizeof (errbuf), dgettext(TEXT_DOMAIN, 3878 "cannot promote '%s'"), zhp->zfs_name); 3879 3880 if (zhp->zfs_type == ZFS_TYPE_SNAPSHOT) { 3881 zfs_error_aux(hdl, dgettext(TEXT_DOMAIN, 3882 "snapshots can not be promoted")); 3883 return (zfs_error(hdl, EZFS_BADTYPE, errbuf)); 3884 } 3885 3886 if (zhp->zfs_dmustats.dds_origin[0] == '\0') { 3887 zfs_error_aux(hdl, dgettext(TEXT_DOMAIN, 3888 "not a cloned filesystem")); 3889 return (zfs_error(hdl, EZFS_BADTYPE, errbuf)); 3890 } 3891 3892 if (!zfs_validate_name(hdl, zhp->zfs_name, zhp->zfs_type, B_TRUE)) 3893 return (zfs_error(hdl, EZFS_INVALIDNAME, errbuf)); 3894 3895 ret = lzc_promote(zhp->zfs_name, snapname, sizeof (snapname)); 3896 3897 if (ret != 0) { 3898 switch (ret) { 3899 case EEXIST: 3900 /* There is a conflicting snapshot name. */ 3901 zfs_error_aux(hdl, dgettext(TEXT_DOMAIN, 3902 "conflicting snapshot '%s' from parent '%s'"), 3903 snapname, zhp->zfs_dmustats.dds_origin); 3904 return (zfs_error(hdl, EZFS_EXISTS, errbuf)); 3905 3906 default: 3907 return (zfs_standard_error(hdl, ret, errbuf)); 3908 } 3909 } 3910 return (ret); 3911} 3912 3913typedef struct snapdata { 3914 nvlist_t *sd_nvl; 3915 const char *sd_snapname; 3916} snapdata_t; 3917 3918static int 3919zfs_snapshot_cb(zfs_handle_t *zhp, void *arg) 3920{ 3921 snapdata_t *sd = arg; 3922 char name[ZFS_MAX_DATASET_NAME_LEN]; 3923 int rv = 0; 3924 3925 if (zfs_prop_get_int(zhp, ZFS_PROP_INCONSISTENT) == 0) { 3926 (void) snprintf(name, sizeof (name), 3927 "%s@%s", zfs_get_name(zhp), sd->sd_snapname); 3928 3929 fnvlist_add_boolean(sd->sd_nvl, name); 3930 3931 rv = zfs_iter_filesystems(zhp, zfs_snapshot_cb, sd); 3932 } 3933 zfs_close(zhp); 3934 3935 return (rv); 3936} 3937 3938int 3939zfs_remap_indirects(libzfs_handle_t *hdl, const char *fs) 3940{ 3941 int err; 3942 char errbuf[1024]; 3943 3944 (void) snprintf(errbuf, sizeof (errbuf), dgettext(TEXT_DOMAIN, 3945 "cannot remap dataset '%s'"), fs); 3946 3947 err = lzc_remap(fs); 3948 3949 if (err != 0) { 3950 switch (err) { 3951 case ENOTSUP: 3952 zfs_error_aux(hdl, dgettext(TEXT_DOMAIN, 3953 "pool must be upgraded")); 3954 (void) zfs_error(hdl, EZFS_BADVERSION, errbuf); 3955 break; 3956 case EINVAL: 3957 (void) zfs_error(hdl, EZFS_BADTYPE, errbuf); 3958 break; 3959 default: 3960 (void) zfs_standard_error(hdl, err, errbuf); 3961 break; 3962 } 3963 } 3964 3965 return (err); 3966} 3967 3968/* 3969 * Creates snapshots. The keys in the snaps nvlist are the snapshots to be 3970 * created. 3971 */ 3972int 3973zfs_snapshot_nvl(libzfs_handle_t *hdl, nvlist_t *snaps, nvlist_t *props) 3974{ 3975 int ret; 3976 char errbuf[1024]; 3977 nvpair_t *elem; 3978 nvlist_t *errors; 3979 3980 (void) snprintf(errbuf, sizeof (errbuf), dgettext(TEXT_DOMAIN, 3981 "cannot create snapshots ")); 3982 3983 elem = NULL; 3984 while ((elem = nvlist_next_nvpair(snaps, elem)) != NULL) { 3985 const char *snapname = nvpair_name(elem); 3986 3987 /* validate the target name */ 3988 if (!zfs_validate_name(hdl, snapname, ZFS_TYPE_SNAPSHOT, 3989 B_TRUE)) { 3990 (void) snprintf(errbuf, sizeof (errbuf), 3991 dgettext(TEXT_DOMAIN, 3992 "cannot create snapshot '%s'"), snapname); 3993 return (zfs_error(hdl, EZFS_INVALIDNAME, errbuf)); 3994 } 3995 } 3996 3997 /* 3998 * get pool handle for prop validation. assumes all snaps are in the 3999 * same pool, as does lzc_snapshot (below). 4000 */ 4001 char pool[ZFS_MAX_DATASET_NAME_LEN]; 4002 elem = nvlist_next_nvpair(snaps, NULL); 4003 (void) strlcpy(pool, nvpair_name(elem), sizeof (pool)); 4004 pool[strcspn(pool, "/@")] = '\0'; 4005 zpool_handle_t *zpool_hdl = zpool_open(hdl, pool); 4006 4007 if (props != NULL && 4008 (props = zfs_valid_proplist(hdl, ZFS_TYPE_SNAPSHOT, 4009 props, B_FALSE, NULL, zpool_hdl, errbuf)) == NULL) { 4010 zpool_close(zpool_hdl); 4011 return (-1); 4012 } 4013 zpool_close(zpool_hdl); 4014 4015 ret = lzc_snapshot(snaps, props, &errors); 4016 4017 if (ret != 0) { 4018 boolean_t printed = B_FALSE; 4019 for (elem = nvlist_next_nvpair(errors, NULL); 4020 elem != NULL; 4021 elem = nvlist_next_nvpair(errors, elem)) { 4022 (void) snprintf(errbuf, sizeof (errbuf), 4023 dgettext(TEXT_DOMAIN, 4024 "cannot create snapshot '%s'"), nvpair_name(elem)); 4025 (void) zfs_standard_error(hdl, 4026 fnvpair_value_int32(elem), errbuf); 4027 printed = B_TRUE; 4028 } 4029 if (!printed) { 4030 switch (ret) { 4031 case EXDEV: 4032 zfs_error_aux(hdl, dgettext(TEXT_DOMAIN, 4033 "multiple snapshots of same " 4034 "fs not allowed")); 4035 (void) zfs_error(hdl, EZFS_EXISTS, errbuf); 4036 4037 break; 4038 default: 4039 (void) zfs_standard_error(hdl, ret, errbuf); 4040 } 4041 } 4042 } 4043 4044 nvlist_free(props); 4045 nvlist_free(errors); 4046 return (ret); 4047} 4048 4049int 4050zfs_snapshot(libzfs_handle_t *hdl, const char *path, boolean_t recursive, 4051 nvlist_t *props) 4052{ 4053 int ret; 4054 snapdata_t sd = { 0 }; 4055 char fsname[ZFS_MAX_DATASET_NAME_LEN]; 4056 char *cp; 4057 zfs_handle_t *zhp; 4058 char errbuf[1024]; 4059 4060 (void) snprintf(errbuf, sizeof (errbuf), dgettext(TEXT_DOMAIN, 4061 "cannot snapshot %s"), path); 4062 4063 if (!zfs_validate_name(hdl, path, ZFS_TYPE_SNAPSHOT, B_TRUE)) 4064 return (zfs_error(hdl, EZFS_INVALIDNAME, errbuf)); 4065 4066 (void) strlcpy(fsname, path, sizeof (fsname)); 4067 cp = strchr(fsname, '@'); 4068 *cp = '\0'; 4069 sd.sd_snapname = cp + 1; 4070 4071 if ((zhp = zfs_open(hdl, fsname, ZFS_TYPE_FILESYSTEM | 4072 ZFS_TYPE_VOLUME)) == NULL) { 4073 return (-1); 4074 } 4075 4076 verify(nvlist_alloc(&sd.sd_nvl, NV_UNIQUE_NAME, 0) == 0); 4077 if (recursive) { 4078 (void) zfs_snapshot_cb(zfs_handle_dup(zhp), &sd); 4079 } else { 4080 fnvlist_add_boolean(sd.sd_nvl, path); 4081 } 4082 4083 ret = zfs_snapshot_nvl(hdl, sd.sd_nvl, props); 4084 nvlist_free(sd.sd_nvl); 4085 zfs_close(zhp); 4086 return (ret); 4087} 4088 4089/* 4090 * Destroy any more recent snapshots. We invoke this callback on any dependents 4091 * of the snapshot first. If the 'cb_dependent' member is non-zero, then this 4092 * is a dependent and we should just destroy it without checking the transaction 4093 * group. 4094 */ 4095typedef struct rollback_data { 4096 const char *cb_target; /* the snapshot */ 4097 uint64_t cb_create; /* creation time reference */ 4098 boolean_t cb_error; 4099 boolean_t cb_force; 4100} rollback_data_t; 4101 4102static int 4103rollback_destroy_dependent(zfs_handle_t *zhp, void *data) 4104{ 4105 rollback_data_t *cbp = data; 4106 prop_changelist_t *clp; 4107 4108 /* We must destroy this clone; first unmount it */ 4109 clp = changelist_gather(zhp, ZFS_PROP_NAME, 0, 4110 cbp->cb_force ? MS_FORCE: 0); 4111 if (clp == NULL || changelist_prefix(clp) != 0) { 4112 cbp->cb_error = B_TRUE; 4113 zfs_close(zhp); 4114 return (0); 4115 } 4116 if (zfs_destroy(zhp, B_FALSE) != 0) 4117 cbp->cb_error = B_TRUE; 4118 else 4119 changelist_remove(clp, zhp->zfs_name); 4120 (void) changelist_postfix(clp); 4121 changelist_free(clp); 4122 4123 zfs_close(zhp); 4124 return (0); 4125} 4126 4127static int 4128rollback_destroy(zfs_handle_t *zhp, void *data) 4129{ 4130 rollback_data_t *cbp = data; 4131 4132 if (zfs_prop_get_int(zhp, ZFS_PROP_CREATETXG) > cbp->cb_create) { 4133 cbp->cb_error |= zfs_iter_dependents(zhp, B_FALSE, 4134 rollback_destroy_dependent, cbp); 4135 4136 cbp->cb_error |= zfs_destroy(zhp, B_FALSE); 4137 } 4138 4139 zfs_close(zhp); 4140 return (0); 4141} 4142 4143/* 4144 * Given a dataset, rollback to a specific snapshot, discarding any 4145 * data changes since then and making it the active dataset. 4146 * 4147 * Any snapshots and bookmarks more recent than the target are 4148 * destroyed, along with their dependents (i.e. clones). 4149 */ 4150int 4151zfs_rollback(zfs_handle_t *zhp, zfs_handle_t *snap, boolean_t force) 4152{ 4153 rollback_data_t cb = { 0 }; 4154 int err; 4155 boolean_t restore_resv = 0; 4156 uint64_t old_volsize = 0, new_volsize; 4157 zfs_prop_t resv_prop; 4158 4159 assert(zhp->zfs_type == ZFS_TYPE_FILESYSTEM || 4160 zhp->zfs_type == ZFS_TYPE_VOLUME); 4161 4162 /* 4163 * Destroy all recent snapshots and their dependents. 4164 */ 4165 cb.cb_force = force; 4166 cb.cb_target = snap->zfs_name; 4167 cb.cb_create = zfs_prop_get_int(snap, ZFS_PROP_CREATETXG); 4168 (void) zfs_iter_snapshots(zhp, B_FALSE, rollback_destroy, &cb); 4169 (void) zfs_iter_bookmarks(zhp, rollback_destroy, &cb); 4170 4171 if (cb.cb_error) 4172 return (-1); 4173 4174 /* 4175 * Now that we have verified that the snapshot is the latest, 4176 * rollback to the given snapshot. 4177 */ 4178 4179 if (zhp->zfs_type == ZFS_TYPE_VOLUME) { 4180 if (zfs_which_resv_prop(zhp, &resv_prop) < 0) 4181 return (-1); 4182 old_volsize = zfs_prop_get_int(zhp, ZFS_PROP_VOLSIZE); 4183 restore_resv = 4184 (old_volsize == zfs_prop_get_int(zhp, resv_prop)); 4185 } 4186 4187 /* 4188 * Pass both the filesystem and the wanted snapshot names, 4189 * we would get an error back if the snapshot is destroyed or 4190 * a new snapshot is created before this request is processed. 4191 */ 4192 err = lzc_rollback_to(zhp->zfs_name, snap->zfs_name); 4193 if (err != 0) { 4194 char errbuf[1024]; 4195 4196 (void) snprintf(errbuf, sizeof (errbuf), 4197 dgettext(TEXT_DOMAIN, "cannot rollback '%s'"), 4198 zhp->zfs_name); 4199 switch (err) { 4200 case EEXIST: 4201 zfs_error_aux(zhp->zfs_hdl, dgettext(TEXT_DOMAIN, 4202 "there is a snapshot or bookmark more recent " 4203 "than '%s'"), snap->zfs_name); 4204 (void) zfs_error(zhp->zfs_hdl, EZFS_EXISTS, errbuf); 4205 break; 4206 case ESRCH: 4207 zfs_error_aux(zhp->zfs_hdl, dgettext(TEXT_DOMAIN, 4208 "'%s' is not found among snapshots of '%s'"), 4209 snap->zfs_name, zhp->zfs_name); 4210 (void) zfs_error(zhp->zfs_hdl, EZFS_NOENT, errbuf); 4211 break; 4212 case EINVAL: 4213 (void) zfs_error(zhp->zfs_hdl, EZFS_BADTYPE, errbuf); 4214 break; 4215 default: 4216 (void) zfs_standard_error(zhp->zfs_hdl, err, errbuf); 4217 } 4218 return (err); 4219 } 4220 4221 /* 4222 * For volumes, if the pre-rollback volsize matched the pre- 4223 * rollback reservation and the volsize has changed then set 4224 * the reservation property to the post-rollback volsize. 4225 * Make a new handle since the rollback closed the dataset. 4226 */ 4227 if ((zhp->zfs_type == ZFS_TYPE_VOLUME) && 4228 (zhp = make_dataset_handle(zhp->zfs_hdl, zhp->zfs_name))) { 4229 if (restore_resv) { 4230 new_volsize = zfs_prop_get_int(zhp, ZFS_PROP_VOLSIZE); 4231 if (old_volsize != new_volsize) 4232 err = zfs_prop_set_int(zhp, resv_prop, 4233 new_volsize); 4234 } 4235 zfs_close(zhp); 4236 } 4237 return (err); 4238} 4239 4240/* 4241 * Renames the given dataset. 4242 */ 4243int 4244zfs_rename(zfs_handle_t *zhp, const char *source, const char *target, 4245 renameflags_t flags) 4246{ 4247 int ret = 0; 4248 zfs_cmd_t zc = { 0 }; 4249 char *delim; 4250 prop_changelist_t *cl = NULL; 4251 zfs_handle_t *zhrp = NULL; 4252 char *parentname = NULL; 4253 char parent[ZFS_MAX_DATASET_NAME_LEN]; 4254 char property[ZFS_MAXPROPLEN]; 4255 libzfs_handle_t *hdl = zhp->zfs_hdl; 4256 char errbuf[1024]; 4257 4258 /* if we have the same exact name, just return success */ 4259 if (strcmp(zhp->zfs_name, target) == 0) 4260 return (0); 4261 4262 (void) snprintf(errbuf, sizeof (errbuf), dgettext(TEXT_DOMAIN, 4263 "cannot rename to '%s'"), target); 4264 4265 if (source != NULL) { 4266 /* 4267 * This is recursive snapshots rename, put snapshot name 4268 * (that might not exist) into zfs_name. 4269 */ 4270 assert(flags.recurse); 4271 4272 (void) strlcat(zhp->zfs_name, "@", sizeof(zhp->zfs_name)); 4273 (void) strlcat(zhp->zfs_name, source, sizeof(zhp->zfs_name)); 4274 zhp->zfs_type = ZFS_TYPE_SNAPSHOT; 4275 } 4276 4277 /* make sure source name is valid */ 4278 if (!zfs_validate_name(hdl, zhp->zfs_name, zhp->zfs_type, B_TRUE)) 4279 return (zfs_error(hdl, EZFS_INVALIDNAME, errbuf)); 4280 4281 /* 4282 * Make sure the target name is valid 4283 */ 4284 if (zhp->zfs_type == ZFS_TYPE_SNAPSHOT || 4285 zhp->zfs_type == ZFS_TYPE_BOOKMARK) { 4286 const char sep = zhp->zfs_type == ZFS_TYPE_SNAPSHOT ? '@' : '#'; 4287 4288 if ((strchr(target, sep) == NULL) || *target == sep) { 4289 /* 4290 * Snapshot target name is abbreviated, 4291 * reconstruct full dataset name 4292 */ 4293 (void) strlcpy(parent, zhp->zfs_name, sizeof (parent)); 4294 delim = strchr(parent, sep); 4295 if (strchr(target, sep) == NULL) 4296 *(++delim) = '\0'; 4297 else 4298 *delim = '\0'; 4299 (void) strlcat(parent, target, sizeof (parent)); 4300 target = parent; 4301 } else { 4302 /* 4303 * Make sure we're renaming within the same dataset. 4304 */ 4305 delim = strchr(target, sep); 4306 if (strncmp(zhp->zfs_name, target, delim - target) 4307 != 0 || zhp->zfs_name[delim - target] != sep) { 4308 zfs_error_aux(hdl, dgettext(TEXT_DOMAIN, 4309 "%s must be part of same dataset"), 4310 zhp->zfs_type == ZFS_TYPE_SNAPSHOT ? 4311 "snapshots" : "bookmarks"); 4312 return (zfs_error(hdl, EZFS_CROSSTARGET, 4313 errbuf)); 4314 } 4315 } 4316 4317 if (!zfs_validate_name(hdl, target, zhp->zfs_type, B_TRUE)) 4318 return (zfs_error(hdl, EZFS_INVALIDNAME, errbuf)); 4319 } else { 4320 if (flags.recurse) { 4321 zfs_error_aux(hdl, dgettext(TEXT_DOMAIN, 4322 "recursive rename must be a snapshot")); 4323 return (zfs_error(hdl, EZFS_BADTYPE, errbuf)); 4324 } 4325 4326 if (!zfs_validate_name(hdl, target, zhp->zfs_type, B_TRUE)) 4327 return (zfs_error(hdl, EZFS_INVALIDNAME, errbuf)); 4328 4329 /* validate parents */ 4330 if (check_parents(hdl, target, NULL, B_FALSE, NULL) != 0) 4331 return (-1); 4332 4333 /* make sure we're in the same pool */ 4334 verify((delim = strchr(target, '/')) != NULL); 4335 if (strncmp(zhp->zfs_name, target, delim - target) != 0 || 4336 zhp->zfs_name[delim - target] != '/') { 4337 zfs_error_aux(hdl, dgettext(TEXT_DOMAIN, 4338 "datasets must be within same pool")); 4339 return (zfs_error(hdl, EZFS_CROSSTARGET, errbuf)); 4340 } 4341 4342 /* new name cannot be a child of the current dataset name */ 4343 if (is_descendant(zhp->zfs_name, target)) { 4344 zfs_error_aux(hdl, dgettext(TEXT_DOMAIN, 4345 "New dataset name cannot be a descendant of " 4346 "current dataset name")); 4347 return (zfs_error(hdl, EZFS_INVALIDNAME, errbuf)); 4348 } 4349 } 4350 4351 (void) snprintf(errbuf, sizeof (errbuf), 4352 dgettext(TEXT_DOMAIN, "cannot rename '%s'"), zhp->zfs_name); 4353 4354 if (getzoneid() == GLOBAL_ZONEID && 4355 zfs_prop_get_int(zhp, ZFS_PROP_ZONED)) { 4356 zfs_error_aux(hdl, dgettext(TEXT_DOMAIN, 4357 "dataset is used in a non-global zone")); 4358 return (zfs_error(hdl, EZFS_ZONED, errbuf)); 4359 } 4360 4361 /* 4362 * Avoid unmounting file systems with mountpoint property set to 4363 * 'legacy' or 'none' even if -u option is not given. 4364 */ 4365 if (zhp->zfs_type == ZFS_TYPE_FILESYSTEM && 4366 !flags.recurse && !flags.nounmount && 4367 zfs_prop_get(zhp, ZFS_PROP_MOUNTPOINT, property, 4368 sizeof (property), NULL, NULL, 0, B_FALSE) == 0 && 4369 (strcmp(property, "legacy") == 0 || 4370 strcmp(property, "none") == 0)) { 4371 flags.nounmount = B_TRUE; 4372 } 4373 if (flags.recurse) { 4374 parentname = zfs_strdup(zhp->zfs_hdl, zhp->zfs_name); 4375 if (parentname == NULL) { 4376 ret = -1; 4377 goto error; 4378 } 4379 delim = strchr(parentname, '@'); 4380 *delim = '\0'; 4381 zhrp = zfs_open(zhp->zfs_hdl, parentname, ZFS_TYPE_DATASET); 4382 if (zhrp == NULL) { 4383 ret = -1; 4384 goto error; 4385 } 4386 } else if (zhp->zfs_type != ZFS_TYPE_SNAPSHOT && 4387 zhp->zfs_type != ZFS_TYPE_BOOKMARK) { 4388 if ((cl = changelist_gather(zhp, ZFS_PROP_NAME, 4389 flags.nounmount ? CL_GATHER_DONT_UNMOUNT : 0, 4390 flags.forceunmount ? MS_FORCE : 0)) == NULL) { 4391 return (-1); 4392 } 4393 4394 if (changelist_haszonedchild(cl)) { 4395 zfs_error_aux(hdl, dgettext(TEXT_DOMAIN, 4396 "child dataset with inherited mountpoint is used " 4397 "in a non-global zone")); 4398 (void) zfs_error(hdl, EZFS_ZONED, errbuf); 4399 ret = -1; 4400 goto error; 4401 } 4402 4403 if ((ret = changelist_prefix(cl)) != 0) 4404 goto error; 4405 } 4406 4407 if (ZFS_IS_VOLUME(zhp)) 4408 zc.zc_objset_type = DMU_OST_ZVOL; 4409 else 4410 zc.zc_objset_type = DMU_OST_ZFS; 4411 4412 (void) strlcpy(zc.zc_name, zhp->zfs_name, sizeof (zc.zc_name)); 4413 (void) strlcpy(zc.zc_value, target, sizeof (zc.zc_value)); 4414 4415 zc.zc_cookie = flags.recurse ? 1 : 0; 4416 if (flags.nounmount) 4417 zc.zc_cookie |= 2; 4418 4419 if ((ret = zfs_ioctl(zhp->zfs_hdl, ZFS_IOC_RENAME, &zc)) != 0) { 4420 /* 4421 * if it was recursive, the one that actually failed will 4422 * be in zc.zc_name 4423 */ 4424 (void) snprintf(errbuf, sizeof (errbuf), dgettext(TEXT_DOMAIN, 4425 "cannot rename '%s'"), zc.zc_name); 4426 4427 if (flags.recurse && errno == EEXIST) { 4428 zfs_error_aux(hdl, dgettext(TEXT_DOMAIN, 4429 "a child dataset already has a snapshot " 4430 "with the new name")); 4431 (void) zfs_error(hdl, EZFS_EXISTS, errbuf); 4432 } else if (errno == EINVAL) { 4433 (void) zfs_error(hdl, EZFS_INVALIDNAME, errbuf); 4434 } else { 4435 (void) zfs_standard_error(zhp->zfs_hdl, errno, errbuf); 4436 } 4437 4438 /* 4439 * On failure, we still want to remount any filesystems that 4440 * were previously mounted, so we don't alter the system state. 4441 */ 4442 if (cl != NULL) 4443 (void) changelist_postfix(cl); 4444 } else { 4445 if (cl != NULL) { 4446 changelist_rename(cl, zfs_get_name(zhp), target); 4447 ret = changelist_postfix(cl); 4448 } 4449 } 4450 4451error: 4452 if (parentname != NULL) { 4453 free(parentname); 4454 } 4455 if (zhrp != NULL) { 4456 zfs_close(zhrp); 4457 } 4458 if (cl != NULL) { 4459 changelist_free(cl); 4460 } 4461 return (ret); 4462} 4463 4464nvlist_t * 4465zfs_get_user_props(zfs_handle_t *zhp) 4466{ 4467 return (zhp->zfs_user_props); 4468} 4469 4470nvlist_t * 4471zfs_get_recvd_props(zfs_handle_t *zhp) 4472{ 4473 if (zhp->zfs_recvd_props == NULL) 4474 if (get_recvd_props_ioctl(zhp) != 0) 4475 return (NULL); 4476 return (zhp->zfs_recvd_props); 4477} 4478 4479/* 4480 * This function is used by 'zfs list' to determine the exact set of columns to 4481 * display, and their maximum widths. This does two main things: 4482 * 4483 * - If this is a list of all properties, then expand the list to include 4484 * all native properties, and set a flag so that for each dataset we look 4485 * for new unique user properties and add them to the list. 4486 * 4487 * - For non fixed-width properties, keep track of the maximum width seen 4488 * so that we can size the column appropriately. If the user has 4489 * requested received property values, we also need to compute the width 4490 * of the RECEIVED column. 4491 */ 4492int 4493zfs_expand_proplist(zfs_handle_t *zhp, zprop_list_t **plp, boolean_t received, 4494 boolean_t literal) 4495{ 4496 libzfs_handle_t *hdl = zhp->zfs_hdl; 4497 zprop_list_t *entry; 4498 zprop_list_t **last, **start; 4499 nvlist_t *userprops, *propval; 4500 nvpair_t *elem; 4501 char *strval; 4502 char buf[ZFS_MAXPROPLEN]; 4503 4504 if (zprop_expand_list(hdl, plp, ZFS_TYPE_DATASET) != 0) 4505 return (-1); 4506 4507 userprops = zfs_get_user_props(zhp); 4508 4509 entry = *plp; 4510 if (entry->pl_all && nvlist_next_nvpair(userprops, NULL) != NULL) { 4511 /* 4512 * Go through and add any user properties as necessary. We 4513 * start by incrementing our list pointer to the first 4514 * non-native property. 4515 */ 4516 start = plp; 4517 while (*start != NULL) { 4518 if ((*start)->pl_prop == ZPROP_INVAL) 4519 break; 4520 start = &(*start)->pl_next; 4521 } 4522 4523 elem = NULL; 4524 while ((elem = nvlist_next_nvpair(userprops, elem)) != NULL) { 4525 /* 4526 * See if we've already found this property in our list. 4527 */ 4528 for (last = start; *last != NULL; 4529 last = &(*last)->pl_next) { 4530 if (strcmp((*last)->pl_user_prop, 4531 nvpair_name(elem)) == 0) 4532 break; 4533 } 4534 4535 if (*last == NULL) { 4536 if ((entry = zfs_alloc(hdl, 4537 sizeof (zprop_list_t))) == NULL || 4538 ((entry->pl_user_prop = zfs_strdup(hdl, 4539 nvpair_name(elem)))) == NULL) { 4540 free(entry); 4541 return (-1); 4542 } 4543 4544 entry->pl_prop = ZPROP_INVAL; 4545 entry->pl_width = strlen(nvpair_name(elem)); 4546 entry->pl_all = B_TRUE; 4547 *last = entry; 4548 } 4549 } 4550 } 4551 4552 /* 4553 * Now go through and check the width of any non-fixed columns 4554 */ 4555 for (entry = *plp; entry != NULL; entry = entry->pl_next) { 4556 if (entry->pl_fixed && !literal) 4557 continue; 4558 4559 if (entry->pl_prop != ZPROP_INVAL) { 4560 if (zfs_prop_get(zhp, entry->pl_prop, 4561 buf, sizeof (buf), NULL, NULL, 0, literal) == 0) { 4562 if (strlen(buf) > entry->pl_width) 4563 entry->pl_width = strlen(buf); 4564 } 4565 if (received && zfs_prop_get_recvd(zhp, 4566 zfs_prop_to_name(entry->pl_prop), 4567 buf, sizeof (buf), literal) == 0) 4568 if (strlen(buf) > entry->pl_recvd_width) 4569 entry->pl_recvd_width = strlen(buf); 4570 } else { 4571 if (nvlist_lookup_nvlist(userprops, entry->pl_user_prop, 4572 &propval) == 0) { 4573 verify(nvlist_lookup_string(propval, 4574 ZPROP_VALUE, &strval) == 0); 4575 if (strlen(strval) > entry->pl_width) 4576 entry->pl_width = strlen(strval); 4577 } 4578 if (received && zfs_prop_get_recvd(zhp, 4579 entry->pl_user_prop, 4580 buf, sizeof (buf), literal) == 0) 4581 if (strlen(buf) > entry->pl_recvd_width) 4582 entry->pl_recvd_width = strlen(buf); 4583 } 4584 } 4585 4586 return (0); 4587} 4588 4589int 4590zfs_deleg_share_nfs(libzfs_handle_t *hdl, char *dataset, char *path, 4591 char *resource, void *export, void *sharetab, 4592 int sharemax, zfs_share_op_t operation) 4593{ 4594 zfs_cmd_t zc = { 0 }; 4595 int error; 4596 4597 (void) strlcpy(zc.zc_name, dataset, sizeof (zc.zc_name)); 4598 (void) strlcpy(zc.zc_value, path, sizeof (zc.zc_value)); 4599 if (resource) 4600 (void) strlcpy(zc.zc_string, resource, sizeof (zc.zc_string)); 4601 zc.zc_share.z_sharedata = (uint64_t)(uintptr_t)sharetab; 4602 zc.zc_share.z_exportdata = (uint64_t)(uintptr_t)export; 4603 zc.zc_share.z_sharetype = operation; 4604 zc.zc_share.z_sharemax = sharemax; 4605 error = ioctl(hdl->libzfs_fd, ZFS_IOC_SHARE, &zc); 4606 return (error); 4607} 4608 4609void 4610zfs_prune_proplist(zfs_handle_t *zhp, uint8_t *props) 4611{ 4612 nvpair_t *curr; 4613 4614 /* 4615 * Keep a reference to the props-table against which we prune the 4616 * properties. 4617 */ 4618 zhp->zfs_props_table = props; 4619 4620 curr = nvlist_next_nvpair(zhp->zfs_props, NULL); 4621 4622 while (curr) { 4623 zfs_prop_t zfs_prop = zfs_name_to_prop(nvpair_name(curr)); 4624 nvpair_t *next = nvlist_next_nvpair(zhp->zfs_props, curr); 4625 4626 /* 4627 * User properties will result in ZPROP_INVAL, and since we 4628 * only know how to prune standard ZFS properties, we always 4629 * leave these in the list. This can also happen if we 4630 * encounter an unknown DSL property (when running older 4631 * software, for example). 4632 */ 4633 if (zfs_prop != ZPROP_INVAL && props[zfs_prop] == B_FALSE) 4634 (void) nvlist_remove(zhp->zfs_props, 4635 nvpair_name(curr), nvpair_type(curr)); 4636 curr = next; 4637 } 4638} 4639 4640#ifdef illumos 4641static int 4642zfs_smb_acl_mgmt(libzfs_handle_t *hdl, char *dataset, char *path, 4643 zfs_smb_acl_op_t cmd, char *resource1, char *resource2) 4644{ 4645 zfs_cmd_t zc = { 0 }; 4646 nvlist_t *nvlist = NULL; 4647 int error; 4648 4649 (void) strlcpy(zc.zc_name, dataset, sizeof (zc.zc_name)); 4650 (void) strlcpy(zc.zc_value, path, sizeof (zc.zc_value)); 4651 zc.zc_cookie = (uint64_t)cmd; 4652 4653 if (cmd == ZFS_SMB_ACL_RENAME) { 4654 if (nvlist_alloc(&nvlist, NV_UNIQUE_NAME, 0) != 0) { 4655 (void) no_memory(hdl); 4656 return (0); 4657 } 4658 } 4659 4660 switch (cmd) { 4661 case ZFS_SMB_ACL_ADD: 4662 case ZFS_SMB_ACL_REMOVE: 4663 (void) strlcpy(zc.zc_string, resource1, sizeof (zc.zc_string)); 4664 break; 4665 case ZFS_SMB_ACL_RENAME: 4666 if (nvlist_add_string(nvlist, ZFS_SMB_ACL_SRC, 4667 resource1) != 0) { 4668 (void) no_memory(hdl); 4669 return (-1); 4670 } 4671 if (nvlist_add_string(nvlist, ZFS_SMB_ACL_TARGET, 4672 resource2) != 0) { 4673 (void) no_memory(hdl); 4674 return (-1); 4675 } 4676 if (zcmd_write_src_nvlist(hdl, &zc, nvlist) != 0) { 4677 nvlist_free(nvlist); 4678 return (-1); 4679 } 4680 break; 4681 case ZFS_SMB_ACL_PURGE: 4682 break; 4683 default: 4684 return (-1); 4685 } 4686 error = ioctl(hdl->libzfs_fd, ZFS_IOC_SMB_ACL, &zc); 4687 nvlist_free(nvlist); 4688 return (error); 4689} 4690 4691int 4692zfs_smb_acl_add(libzfs_handle_t *hdl, char *dataset, 4693 char *path, char *resource) 4694{ 4695 return (zfs_smb_acl_mgmt(hdl, dataset, path, ZFS_SMB_ACL_ADD, 4696 resource, NULL)); 4697} 4698 4699int 4700zfs_smb_acl_remove(libzfs_handle_t *hdl, char *dataset, 4701 char *path, char *resource) 4702{ 4703 return (zfs_smb_acl_mgmt(hdl, dataset, path, ZFS_SMB_ACL_REMOVE, 4704 resource, NULL)); 4705} 4706 4707int 4708zfs_smb_acl_purge(libzfs_handle_t *hdl, char *dataset, char *path) 4709{ 4710 return (zfs_smb_acl_mgmt(hdl, dataset, path, ZFS_SMB_ACL_PURGE, 4711 NULL, NULL)); 4712} 4713 4714int 4715zfs_smb_acl_rename(libzfs_handle_t *hdl, char *dataset, char *path, 4716 char *oldname, char *newname) 4717{ 4718 return (zfs_smb_acl_mgmt(hdl, dataset, path, ZFS_SMB_ACL_RENAME, 4719 oldname, newname)); 4720} 4721#endif /* illumos */ 4722 4723int 4724zfs_userspace(zfs_handle_t *zhp, zfs_userquota_prop_t type, 4725 zfs_userspace_cb_t func, void *arg) 4726{ 4727 zfs_cmd_t zc = { 0 }; 4728 zfs_useracct_t buf[100]; 4729 libzfs_handle_t *hdl = zhp->zfs_hdl; 4730 int ret; 4731 4732 (void) strlcpy(zc.zc_name, zhp->zfs_name, sizeof (zc.zc_name)); 4733 4734 zc.zc_objset_type = type; 4735 zc.zc_nvlist_dst = (uintptr_t)buf; 4736 4737 for (;;) { 4738 zfs_useracct_t *zua = buf; 4739 4740 zc.zc_nvlist_dst_size = sizeof (buf); 4741 if (zfs_ioctl(hdl, ZFS_IOC_USERSPACE_MANY, &zc) != 0) { 4742 char errbuf[1024]; 4743 4744 (void) snprintf(errbuf, sizeof (errbuf), 4745 dgettext(TEXT_DOMAIN, 4746 "cannot get used/quota for %s"), zc.zc_name); 4747 return (zfs_standard_error_fmt(hdl, errno, errbuf)); 4748 } 4749 if (zc.zc_nvlist_dst_size == 0) 4750 break; 4751 4752 while (zc.zc_nvlist_dst_size > 0) { 4753 if ((ret = func(arg, zua->zu_domain, zua->zu_rid, 4754 zua->zu_space)) != 0) 4755 return (ret); 4756 zua++; 4757 zc.zc_nvlist_dst_size -= sizeof (zfs_useracct_t); 4758 } 4759 } 4760 4761 return (0); 4762} 4763 4764struct holdarg { 4765 nvlist_t *nvl; 4766 const char *snapname; 4767 const char *tag; 4768 boolean_t recursive; 4769 int error; 4770}; 4771 4772static int 4773zfs_hold_one(zfs_handle_t *zhp, void *arg) 4774{ 4775 struct holdarg *ha = arg; 4776 char name[ZFS_MAX_DATASET_NAME_LEN]; 4777 int rv = 0; 4778 4779 (void) snprintf(name, sizeof (name), 4780 "%s@%s", zhp->zfs_name, ha->snapname); 4781 4782 if (lzc_exists(name)) 4783 fnvlist_add_string(ha->nvl, name, ha->tag); 4784 4785 if (ha->recursive) 4786 rv = zfs_iter_filesystems(zhp, zfs_hold_one, ha); 4787 zfs_close(zhp); 4788 return (rv); 4789} 4790 4791int 4792zfs_hold(zfs_handle_t *zhp, const char *snapname, const char *tag, 4793 boolean_t recursive, int cleanup_fd) 4794{ 4795 int ret; 4796 struct holdarg ha; 4797 4798 ha.nvl = fnvlist_alloc(); 4799 ha.snapname = snapname; 4800 ha.tag = tag; 4801 ha.recursive = recursive; 4802 (void) zfs_hold_one(zfs_handle_dup(zhp), &ha); 4803 4804 if (nvlist_empty(ha.nvl)) { 4805 char errbuf[1024]; 4806 4807 fnvlist_free(ha.nvl); 4808 ret = ENOENT; 4809 (void) snprintf(errbuf, sizeof (errbuf), 4810 dgettext(TEXT_DOMAIN, 4811 "cannot hold snapshot '%s@%s'"), 4812 zhp->zfs_name, snapname); 4813 (void) zfs_standard_error(zhp->zfs_hdl, ret, errbuf); 4814 return (ret); 4815 } 4816 4817 ret = zfs_hold_nvl(zhp, cleanup_fd, ha.nvl); 4818 fnvlist_free(ha.nvl); 4819 4820 return (ret); 4821} 4822 4823int 4824zfs_hold_nvl(zfs_handle_t *zhp, int cleanup_fd, nvlist_t *holds) 4825{ 4826 int ret; 4827 nvlist_t *errors; 4828 libzfs_handle_t *hdl = zhp->zfs_hdl; 4829 char errbuf[1024]; 4830 nvpair_t *elem; 4831 4832 errors = NULL; 4833 ret = lzc_hold(holds, cleanup_fd, &errors); 4834 4835 if (ret == 0) { 4836 /* There may be errors even in the success case. */ 4837 fnvlist_free(errors); 4838 return (0); 4839 } 4840 4841 if (nvlist_empty(errors)) { 4842 /* no hold-specific errors */ 4843 (void) snprintf(errbuf, sizeof (errbuf), 4844 dgettext(TEXT_DOMAIN, "cannot hold")); 4845 switch (ret) { 4846 case ENOTSUP: 4847 zfs_error_aux(hdl, dgettext(TEXT_DOMAIN, 4848 "pool must be upgraded")); 4849 (void) zfs_error(hdl, EZFS_BADVERSION, errbuf); 4850 break; 4851 case EINVAL: 4852 (void) zfs_error(hdl, EZFS_BADTYPE, errbuf); 4853 break; 4854 default: 4855 (void) zfs_standard_error(hdl, ret, errbuf); 4856 } 4857 } 4858 4859 for (elem = nvlist_next_nvpair(errors, NULL); 4860 elem != NULL; 4861 elem = nvlist_next_nvpair(errors, elem)) { 4862 (void) snprintf(errbuf, sizeof (errbuf), 4863 dgettext(TEXT_DOMAIN, 4864 "cannot hold snapshot '%s'"), nvpair_name(elem)); 4865 switch (fnvpair_value_int32(elem)) { 4866 case E2BIG: 4867 /* 4868 * Temporary tags wind up having the ds object id 4869 * prepended. So even if we passed the length check 4870 * above, it's still possible for the tag to wind 4871 * up being slightly too long. 4872 */ 4873 (void) zfs_error(hdl, EZFS_TAGTOOLONG, errbuf); 4874 break; 4875 case EINVAL: 4876 (void) zfs_error(hdl, EZFS_BADTYPE, errbuf); 4877 break; 4878 case EEXIST: 4879 (void) zfs_error(hdl, EZFS_REFTAG_HOLD, errbuf); 4880 break; 4881 default: 4882 (void) zfs_standard_error(hdl, 4883 fnvpair_value_int32(elem), errbuf); 4884 } 4885 } 4886 4887 fnvlist_free(errors); 4888 return (ret); 4889} 4890 4891static int 4892zfs_release_one(zfs_handle_t *zhp, void *arg) 4893{ 4894 struct holdarg *ha = arg; 4895 char name[ZFS_MAX_DATASET_NAME_LEN]; 4896 int rv = 0; 4897 nvlist_t *existing_holds; 4898 4899 (void) snprintf(name, sizeof (name), 4900 "%s@%s", zhp->zfs_name, ha->snapname); 4901 4902 if (lzc_get_holds(name, &existing_holds) != 0) { 4903 ha->error = ENOENT; 4904 } else if (!nvlist_exists(existing_holds, ha->tag)) { 4905 ha->error = ESRCH; 4906 } else { 4907 nvlist_t *torelease = fnvlist_alloc(); 4908 fnvlist_add_boolean(torelease, ha->tag); 4909 fnvlist_add_nvlist(ha->nvl, name, torelease); 4910 fnvlist_free(torelease); 4911 } 4912 4913 if (ha->recursive) 4914 rv = zfs_iter_filesystems(zhp, zfs_release_one, ha); 4915 zfs_close(zhp); 4916 return (rv); 4917} 4918 4919int 4920zfs_release(zfs_handle_t *zhp, const char *snapname, const char *tag, 4921 boolean_t recursive) 4922{ 4923 int ret; 4924 struct holdarg ha; 4925 nvlist_t *errors = NULL; 4926 nvpair_t *elem; 4927 libzfs_handle_t *hdl = zhp->zfs_hdl; 4928 char errbuf[1024]; 4929 4930 ha.nvl = fnvlist_alloc(); 4931 ha.snapname = snapname; 4932 ha.tag = tag; 4933 ha.recursive = recursive; 4934 ha.error = 0; 4935 (void) zfs_release_one(zfs_handle_dup(zhp), &ha); 4936 4937 if (nvlist_empty(ha.nvl)) { 4938 fnvlist_free(ha.nvl); 4939 ret = ha.error; 4940 (void) snprintf(errbuf, sizeof (errbuf), 4941 dgettext(TEXT_DOMAIN, 4942 "cannot release hold from snapshot '%s@%s'"), 4943 zhp->zfs_name, snapname); 4944 if (ret == ESRCH) { 4945 (void) zfs_error(hdl, EZFS_REFTAG_RELE, errbuf); 4946 } else { 4947 (void) zfs_standard_error(hdl, ret, errbuf); 4948 } 4949 return (ret); 4950 } 4951 4952 ret = lzc_release(ha.nvl, &errors); 4953 fnvlist_free(ha.nvl); 4954 4955 if (ret == 0) { 4956 /* There may be errors even in the success case. */ 4957 fnvlist_free(errors); 4958 return (0); 4959 } 4960 4961 if (nvlist_empty(errors)) { 4962 /* no hold-specific errors */ 4963 (void) snprintf(errbuf, sizeof (errbuf), dgettext(TEXT_DOMAIN, 4964 "cannot release")); 4965 switch (errno) { 4966 case ENOTSUP: 4967 zfs_error_aux(hdl, dgettext(TEXT_DOMAIN, 4968 "pool must be upgraded")); 4969 (void) zfs_error(hdl, EZFS_BADVERSION, errbuf); 4970 break; 4971 default: 4972 (void) zfs_standard_error_fmt(hdl, errno, errbuf); 4973 } 4974 } 4975 4976 for (elem = nvlist_next_nvpair(errors, NULL); 4977 elem != NULL; 4978 elem = nvlist_next_nvpair(errors, elem)) { 4979 (void) snprintf(errbuf, sizeof (errbuf), 4980 dgettext(TEXT_DOMAIN, 4981 "cannot release hold from snapshot '%s'"), 4982 nvpair_name(elem)); 4983 switch (fnvpair_value_int32(elem)) { 4984 case ESRCH: 4985 (void) zfs_error(hdl, EZFS_REFTAG_RELE, errbuf); 4986 break; 4987 case EINVAL: 4988 (void) zfs_error(hdl, EZFS_BADTYPE, errbuf); 4989 break; 4990 default: 4991 (void) zfs_standard_error_fmt(hdl, 4992 fnvpair_value_int32(elem), errbuf); 4993 } 4994 } 4995 4996 fnvlist_free(errors); 4997 return (ret); 4998} 4999 5000int 5001zfs_get_fsacl(zfs_handle_t *zhp, nvlist_t **nvl) 5002{ 5003 zfs_cmd_t zc = { 0 }; 5004 libzfs_handle_t *hdl = zhp->zfs_hdl; 5005 int nvsz = 2048; 5006 void *nvbuf; 5007 int err = 0; 5008 char errbuf[1024]; 5009 5010 assert(zhp->zfs_type == ZFS_TYPE_VOLUME || 5011 zhp->zfs_type == ZFS_TYPE_FILESYSTEM); 5012 5013tryagain: 5014 5015 nvbuf = malloc(nvsz); 5016 if (nvbuf == NULL) { 5017 err = (zfs_error(hdl, EZFS_NOMEM, strerror(errno))); 5018 goto out; 5019 } 5020 5021 zc.zc_nvlist_dst_size = nvsz; 5022 zc.zc_nvlist_dst = (uintptr_t)nvbuf; 5023 5024 (void) strlcpy(zc.zc_name, zhp->zfs_name, sizeof (zc.zc_name)); 5025 5026 if (ioctl(hdl->libzfs_fd, ZFS_IOC_GET_FSACL, &zc) != 0) { 5027 (void) snprintf(errbuf, sizeof (errbuf), 5028 dgettext(TEXT_DOMAIN, "cannot get permissions on '%s'"), 5029 zc.zc_name); 5030 switch (errno) { 5031 case ENOMEM: 5032 free(nvbuf); 5033 nvsz = zc.zc_nvlist_dst_size; 5034 goto tryagain; 5035 5036 case ENOTSUP: 5037 zfs_error_aux(hdl, dgettext(TEXT_DOMAIN, 5038 "pool must be upgraded")); 5039 err = zfs_error(hdl, EZFS_BADVERSION, errbuf); 5040 break; 5041 case EINVAL: 5042 err = zfs_error(hdl, EZFS_BADTYPE, errbuf); 5043 break; 5044 case ENOENT: 5045 err = zfs_error(hdl, EZFS_NOENT, errbuf); 5046 break; 5047 default: 5048 err = zfs_standard_error_fmt(hdl, errno, errbuf); 5049 break; 5050 } 5051 } else { 5052 /* success */ 5053 int rc = nvlist_unpack(nvbuf, zc.zc_nvlist_dst_size, nvl, 0); 5054 if (rc) { 5055 (void) snprintf(errbuf, sizeof (errbuf), dgettext( 5056 TEXT_DOMAIN, "cannot get permissions on '%s'"), 5057 zc.zc_name); 5058 err = zfs_standard_error_fmt(hdl, rc, errbuf); 5059 } 5060 } 5061 5062 free(nvbuf); 5063out: 5064 return (err); 5065} 5066 5067int 5068zfs_set_fsacl(zfs_handle_t *zhp, boolean_t un, nvlist_t *nvl) 5069{ 5070 zfs_cmd_t zc = { 0 }; 5071 libzfs_handle_t *hdl = zhp->zfs_hdl; 5072 char *nvbuf; 5073 char errbuf[1024]; 5074 size_t nvsz; 5075 int err; 5076 5077 assert(zhp->zfs_type == ZFS_TYPE_VOLUME || 5078 zhp->zfs_type == ZFS_TYPE_FILESYSTEM); 5079 5080 err = nvlist_size(nvl, &nvsz, NV_ENCODE_NATIVE); 5081 assert(err == 0); 5082 5083 nvbuf = malloc(nvsz); 5084 5085 err = nvlist_pack(nvl, &nvbuf, &nvsz, NV_ENCODE_NATIVE, 0); 5086 assert(err == 0); 5087 5088 zc.zc_nvlist_src_size = nvsz; 5089 zc.zc_nvlist_src = (uintptr_t)nvbuf; 5090 zc.zc_perm_action = un; 5091 5092 (void) strlcpy(zc.zc_name, zhp->zfs_name, sizeof (zc.zc_name)); 5093 5094 if (zfs_ioctl(hdl, ZFS_IOC_SET_FSACL, &zc) != 0) { 5095 (void) snprintf(errbuf, sizeof (errbuf), 5096 dgettext(TEXT_DOMAIN, "cannot set permissions on '%s'"), 5097 zc.zc_name); 5098 switch (errno) { 5099 case ENOTSUP: 5100 zfs_error_aux(hdl, dgettext(TEXT_DOMAIN, 5101 "pool must be upgraded")); 5102 err = zfs_error(hdl, EZFS_BADVERSION, errbuf); 5103 break; 5104 case EINVAL: 5105 err = zfs_error(hdl, EZFS_BADTYPE, errbuf); 5106 break; 5107 case ENOENT: 5108 err = zfs_error(hdl, EZFS_NOENT, errbuf); 5109 break; 5110 default: 5111 err = zfs_standard_error_fmt(hdl, errno, errbuf); 5112 break; 5113 } 5114 } 5115 5116 free(nvbuf); 5117 5118 return (err); 5119} 5120 5121int 5122zfs_get_holds(zfs_handle_t *zhp, nvlist_t **nvl) 5123{ 5124 int err; 5125 char errbuf[1024]; 5126 5127 err = lzc_get_holds(zhp->zfs_name, nvl); 5128 5129 if (err != 0) { 5130 libzfs_handle_t *hdl = zhp->zfs_hdl; 5131 5132 (void) snprintf(errbuf, sizeof (errbuf), 5133 dgettext(TEXT_DOMAIN, "cannot get holds for '%s'"), 5134 zhp->zfs_name); 5135 switch (err) { 5136 case ENOTSUP: 5137 zfs_error_aux(hdl, dgettext(TEXT_DOMAIN, 5138 "pool must be upgraded")); 5139 err = zfs_error(hdl, EZFS_BADVERSION, errbuf); 5140 break; 5141 case EINVAL: 5142 err = zfs_error(hdl, EZFS_BADTYPE, errbuf); 5143 break; 5144 case ENOENT: 5145 err = zfs_error(hdl, EZFS_NOENT, errbuf); 5146 break; 5147 default: 5148 err = zfs_standard_error_fmt(hdl, errno, errbuf); 5149 break; 5150 } 5151 } 5152 5153 return (err); 5154} 5155 5156/* 5157 * Convert the zvol's volume size to an appropriate reservation. 5158 * Note: If this routine is updated, it is necessary to update the ZFS test 5159 * suite's shell version in reservation.kshlib. 5160 */ 5161uint64_t 5162zvol_volsize_to_reservation(uint64_t volsize, nvlist_t *props) 5163{ 5164 uint64_t numdb; 5165 uint64_t nblocks, volblocksize; 5166 int ncopies; 5167 char *strval; 5168 5169 if (nvlist_lookup_string(props, 5170 zfs_prop_to_name(ZFS_PROP_COPIES), &strval) == 0) 5171 ncopies = atoi(strval); 5172 else 5173 ncopies = 1; 5174 if (nvlist_lookup_uint64(props, 5175 zfs_prop_to_name(ZFS_PROP_VOLBLOCKSIZE), 5176 &volblocksize) != 0) 5177 volblocksize = ZVOL_DEFAULT_BLOCKSIZE; 5178 nblocks = volsize/volblocksize; 5179 /* start with metadnode L0-L6 */ 5180 numdb = 7; 5181 /* calculate number of indirects */ 5182 while (nblocks > 1) { 5183 nblocks += DNODES_PER_LEVEL - 1; 5184 nblocks /= DNODES_PER_LEVEL; 5185 numdb += nblocks; 5186 } 5187 numdb *= MIN(SPA_DVAS_PER_BP, ncopies + 1); 5188 volsize *= ncopies; 5189 /* 5190 * this is exactly DN_MAX_INDBLKSHIFT when metadata isn't 5191 * compressed, but in practice they compress down to about 5192 * 1100 bytes 5193 */ 5194 numdb *= 1ULL << DN_MAX_INDBLKSHIFT; 5195 volsize += numdb; 5196 return (volsize); 5197} 5198 5199/* 5200 * Attach/detach the given filesystem to/from the given jail. 5201 */ 5202int 5203zfs_jail(zfs_handle_t *zhp, int jailid, int attach) 5204{ 5205 libzfs_handle_t *hdl = zhp->zfs_hdl; 5206 zfs_cmd_t zc = { 0 }; 5207 char errbuf[1024]; 5208 unsigned long cmd; 5209 int ret; 5210 5211 if (attach) { 5212 (void) snprintf(errbuf, sizeof (errbuf), 5213 dgettext(TEXT_DOMAIN, "cannot jail '%s'"), zhp->zfs_name); 5214 } else { 5215 (void) snprintf(errbuf, sizeof (errbuf), 5216 dgettext(TEXT_DOMAIN, "cannot unjail '%s'"), zhp->zfs_name); 5217 } 5218 5219 switch (zhp->zfs_type) { 5220 case ZFS_TYPE_VOLUME: 5221 zfs_error_aux(hdl, dgettext(TEXT_DOMAIN, 5222 "volumes can not be jailed")); 5223 return (zfs_error(hdl, EZFS_BADTYPE, errbuf)); 5224 case ZFS_TYPE_SNAPSHOT: 5225 zfs_error_aux(hdl, dgettext(TEXT_DOMAIN, 5226 "snapshots can not be jailed")); 5227 return (zfs_error(hdl, EZFS_BADTYPE, errbuf)); 5228 } 5229 assert(zhp->zfs_type == ZFS_TYPE_FILESYSTEM); 5230 5231 (void) strlcpy(zc.zc_name, zhp->zfs_name, sizeof (zc.zc_name)); 5232 zc.zc_objset_type = DMU_OST_ZFS; 5233 zc.zc_jailid = jailid; 5234 5235 cmd = attach ? ZFS_IOC_JAIL : ZFS_IOC_UNJAIL; 5236 if ((ret = ioctl(hdl->libzfs_fd, cmd, &zc)) != 0) 5237 zfs_standard_error(hdl, errno, errbuf); 5238 5239 return (ret); 5240} 5241