libzfs_dataset.c revision 289499
1/* 2 * CDDL HEADER START 3 * 4 * The contents of this file are subject to the terms of the 5 * Common Development and Distribution License (the "License"). 6 * You may not use this file except in compliance with the License. 7 * 8 * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE 9 * or http://www.opensolaris.org/os/licensing. 10 * See the License for the specific language governing permissions 11 * and limitations under the License. 12 * 13 * When distributing Covered Code, include this CDDL HEADER in each 14 * file and include the License file at usr/src/OPENSOLARIS.LICENSE. 15 * If applicable, add the following below this CDDL HEADER, with the 16 * fields enclosed by brackets "[]" replaced with your own identifying 17 * information: Portions Copyright [yyyy] [name of copyright owner] 18 * 19 * CDDL HEADER END 20 */ 21 22/* 23 * Copyright (c) 2005, 2010, Oracle and/or its affiliates. All rights reserved. 24 * Copyright (c) 2013, Joyent, Inc. All rights reserved. 25 * Copyright (c) 2011, 2014 by Delphix. All rights reserved. 26 * Copyright (c) 2012 DEY Storage Systems, Inc. All rights reserved. 27 * Copyright (c) 2011-2012 Pawel Jakub Dawidek <pawel@dawidek.net>. 28 * All rights reserved. 29 * Copyright (c) 2012 Martin Matuska <mm@FreeBSD.org>. All rights reserved. 30 * Copyright (c) 2013 Steven Hartland. All rights reserved. 31 * Copyright 2013 Nexenta Systems, Inc. All rights reserved. 32 */ 33 34#include <ctype.h> 35#include <errno.h> 36#include <libintl.h> 37#include <math.h> 38#include <stdio.h> 39#include <stdlib.h> 40#include <strings.h> 41#include <unistd.h> 42#include <stddef.h> 43#include <zone.h> 44#include <fcntl.h> 45#include <sys/mntent.h> 46#include <sys/mount.h> 47#include <priv.h> 48#include <pwd.h> 49#include <grp.h> 50#include <stddef.h> 51#include <idmap.h> 52 53#include <sys/dnode.h> 54#include <sys/spa.h> 55#include <sys/zap.h> 56#include <sys/misc.h> 57#include <libzfs.h> 58 59#include "zfs_namecheck.h" 60#include "zfs_prop.h" 61#include "libzfs_impl.h" 62#include "zfs_deleg.h" 63 64static int userquota_propname_decode(const char *propname, boolean_t zoned, 65 zfs_userquota_prop_t *typep, char *domain, int domainlen, uint64_t *ridp); 66 67/* 68 * Given a single type (not a mask of types), return the type in a human 69 * readable form. 70 */ 71const char * 72zfs_type_to_name(zfs_type_t type) 73{ 74 switch (type) { 75 case ZFS_TYPE_FILESYSTEM: 76 return (dgettext(TEXT_DOMAIN, "filesystem")); 77 case ZFS_TYPE_SNAPSHOT: 78 return (dgettext(TEXT_DOMAIN, "snapshot")); 79 case ZFS_TYPE_VOLUME: 80 return (dgettext(TEXT_DOMAIN, "volume")); 81 } 82 83 return (NULL); 84} 85 86/* 87 * Given a path and mask of ZFS types, return a string describing this dataset. 88 * This is used when we fail to open a dataset and we cannot get an exact type. 89 * We guess what the type would have been based on the path and the mask of 90 * acceptable types. 91 */ 92static const char * 93path_to_str(const char *path, int types) 94{ 95 /* 96 * When given a single type, always report the exact type. 97 */ 98 if (types == ZFS_TYPE_SNAPSHOT) 99 return (dgettext(TEXT_DOMAIN, "snapshot")); 100 if (types == ZFS_TYPE_FILESYSTEM) 101 return (dgettext(TEXT_DOMAIN, "filesystem")); 102 if (types == ZFS_TYPE_VOLUME) 103 return (dgettext(TEXT_DOMAIN, "volume")); 104 105 /* 106 * The user is requesting more than one type of dataset. If this is the 107 * case, consult the path itself. If we're looking for a snapshot, and 108 * a '@' is found, then report it as "snapshot". Otherwise, remove the 109 * snapshot attribute and try again. 110 */ 111 if (types & ZFS_TYPE_SNAPSHOT) { 112 if (strchr(path, '@') != NULL) 113 return (dgettext(TEXT_DOMAIN, "snapshot")); 114 return (path_to_str(path, types & ~ZFS_TYPE_SNAPSHOT)); 115 } 116 117 /* 118 * The user has requested either filesystems or volumes. 119 * We have no way of knowing a priori what type this would be, so always 120 * report it as "filesystem" or "volume", our two primitive types. 121 */ 122 if (types & ZFS_TYPE_FILESYSTEM) 123 return (dgettext(TEXT_DOMAIN, "filesystem")); 124 125 assert(types & ZFS_TYPE_VOLUME); 126 return (dgettext(TEXT_DOMAIN, "volume")); 127} 128 129/* 130 * Validate a ZFS path. This is used even before trying to open the dataset, to 131 * provide a more meaningful error message. We call zfs_error_aux() to 132 * explain exactly why the name was not valid. 133 */ 134int 135zfs_validate_name(libzfs_handle_t *hdl, const char *path, int type, 136 boolean_t modifying) 137{ 138 namecheck_err_t why; 139 char what; 140 141 (void) zfs_prop_get_table(); 142 if (dataset_namecheck(path, &why, &what) != 0) { 143 if (hdl != NULL) { 144 switch (why) { 145 case NAME_ERR_TOOLONG: 146 zfs_error_aux(hdl, dgettext(TEXT_DOMAIN, 147 "name is too long")); 148 break; 149 150 case NAME_ERR_LEADING_SLASH: 151 zfs_error_aux(hdl, dgettext(TEXT_DOMAIN, 152 "leading slash in name")); 153 break; 154 155 case NAME_ERR_EMPTY_COMPONENT: 156 zfs_error_aux(hdl, dgettext(TEXT_DOMAIN, 157 "empty component in name")); 158 break; 159 160 case NAME_ERR_TRAILING_SLASH: 161 zfs_error_aux(hdl, dgettext(TEXT_DOMAIN, 162 "trailing slash in name")); 163 break; 164 165 case NAME_ERR_INVALCHAR: 166 zfs_error_aux(hdl, 167 dgettext(TEXT_DOMAIN, "invalid character " 168 "'%c' in name"), what); 169 break; 170 171 case NAME_ERR_MULTIPLE_AT: 172 zfs_error_aux(hdl, dgettext(TEXT_DOMAIN, 173 "multiple '@' delimiters in name")); 174 break; 175 176 case NAME_ERR_NOLETTER: 177 zfs_error_aux(hdl, dgettext(TEXT_DOMAIN, 178 "pool doesn't begin with a letter")); 179 break; 180 181 case NAME_ERR_RESERVED: 182 zfs_error_aux(hdl, dgettext(TEXT_DOMAIN, 183 "name is reserved")); 184 break; 185 186 case NAME_ERR_DISKLIKE: 187 zfs_error_aux(hdl, dgettext(TEXT_DOMAIN, 188 "reserved disk name")); 189 break; 190 } 191 } 192 193 return (0); 194 } 195 196 if (!(type & ZFS_TYPE_SNAPSHOT) && strchr(path, '@') != NULL) { 197 if (hdl != NULL) 198 zfs_error_aux(hdl, dgettext(TEXT_DOMAIN, 199 "snapshot delimiter '@' in filesystem name")); 200 return (0); 201 } 202 203 if (type == ZFS_TYPE_SNAPSHOT && strchr(path, '@') == NULL) { 204 if (hdl != NULL) 205 zfs_error_aux(hdl, dgettext(TEXT_DOMAIN, 206 "missing '@' delimiter in snapshot name")); 207 return (0); 208 } 209 210 if (modifying && strchr(path, '%') != NULL) { 211 if (hdl != NULL) 212 zfs_error_aux(hdl, dgettext(TEXT_DOMAIN, 213 "invalid character %c in name"), '%'); 214 return (0); 215 } 216 217 return (-1); 218} 219 220int 221zfs_name_valid(const char *name, zfs_type_t type) 222{ 223 if (type == ZFS_TYPE_POOL) 224 return (zpool_name_valid(NULL, B_FALSE, name)); 225 return (zfs_validate_name(NULL, name, type, B_FALSE)); 226} 227 228/* 229 * This function takes the raw DSL properties, and filters out the user-defined 230 * properties into a separate nvlist. 231 */ 232static nvlist_t * 233process_user_props(zfs_handle_t *zhp, nvlist_t *props) 234{ 235 libzfs_handle_t *hdl = zhp->zfs_hdl; 236 nvpair_t *elem; 237 nvlist_t *propval; 238 nvlist_t *nvl; 239 240 if (nvlist_alloc(&nvl, NV_UNIQUE_NAME, 0) != 0) { 241 (void) no_memory(hdl); 242 return (NULL); 243 } 244 245 elem = NULL; 246 while ((elem = nvlist_next_nvpair(props, elem)) != NULL) { 247 if (!zfs_prop_user(nvpair_name(elem))) 248 continue; 249 250 verify(nvpair_value_nvlist(elem, &propval) == 0); 251 if (nvlist_add_nvlist(nvl, nvpair_name(elem), propval) != 0) { 252 nvlist_free(nvl); 253 (void) no_memory(hdl); 254 return (NULL); 255 } 256 } 257 258 return (nvl); 259} 260 261static zpool_handle_t * 262zpool_add_handle(zfs_handle_t *zhp, const char *pool_name) 263{ 264 libzfs_handle_t *hdl = zhp->zfs_hdl; 265 zpool_handle_t *zph; 266 267 if ((zph = zpool_open_canfail(hdl, pool_name)) != NULL) { 268 if (hdl->libzfs_pool_handles != NULL) 269 zph->zpool_next = hdl->libzfs_pool_handles; 270 hdl->libzfs_pool_handles = zph; 271 } 272 return (zph); 273} 274 275static zpool_handle_t * 276zpool_find_handle(zfs_handle_t *zhp, const char *pool_name, int len) 277{ 278 libzfs_handle_t *hdl = zhp->zfs_hdl; 279 zpool_handle_t *zph = hdl->libzfs_pool_handles; 280 281 while ((zph != NULL) && 282 (strncmp(pool_name, zpool_get_name(zph), len) != 0)) 283 zph = zph->zpool_next; 284 return (zph); 285} 286 287/* 288 * Returns a handle to the pool that contains the provided dataset. 289 * If a handle to that pool already exists then that handle is returned. 290 * Otherwise, a new handle is created and added to the list of handles. 291 */ 292static zpool_handle_t * 293zpool_handle(zfs_handle_t *zhp) 294{ 295 char *pool_name; 296 int len; 297 zpool_handle_t *zph; 298 299 len = strcspn(zhp->zfs_name, "/@#") + 1; 300 pool_name = zfs_alloc(zhp->zfs_hdl, len); 301 (void) strlcpy(pool_name, zhp->zfs_name, len); 302 303 zph = zpool_find_handle(zhp, pool_name, len); 304 if (zph == NULL) 305 zph = zpool_add_handle(zhp, pool_name); 306 307 free(pool_name); 308 return (zph); 309} 310 311void 312zpool_free_handles(libzfs_handle_t *hdl) 313{ 314 zpool_handle_t *next, *zph = hdl->libzfs_pool_handles; 315 316 while (zph != NULL) { 317 next = zph->zpool_next; 318 zpool_close(zph); 319 zph = next; 320 } 321 hdl->libzfs_pool_handles = NULL; 322} 323 324/* 325 * Utility function to gather stats (objset and zpl) for the given object. 326 */ 327static int 328get_stats_ioctl(zfs_handle_t *zhp, zfs_cmd_t *zc) 329{ 330 libzfs_handle_t *hdl = zhp->zfs_hdl; 331 332 (void) strlcpy(zc->zc_name, zhp->zfs_name, sizeof (zc->zc_name)); 333 334 while (ioctl(hdl->libzfs_fd, ZFS_IOC_OBJSET_STATS, zc) != 0) { 335 if (errno == ENOMEM) { 336 if (zcmd_expand_dst_nvlist(hdl, zc) != 0) { 337 return (-1); 338 } 339 } else { 340 return (-1); 341 } 342 } 343 return (0); 344} 345 346/* 347 * Utility function to get the received properties of the given object. 348 */ 349static int 350get_recvd_props_ioctl(zfs_handle_t *zhp) 351{ 352 libzfs_handle_t *hdl = zhp->zfs_hdl; 353 nvlist_t *recvdprops; 354 zfs_cmd_t zc = { 0 }; 355 int err; 356 357 if (zcmd_alloc_dst_nvlist(hdl, &zc, 0) != 0) 358 return (-1); 359 360 (void) strlcpy(zc.zc_name, zhp->zfs_name, sizeof (zc.zc_name)); 361 362 while (ioctl(hdl->libzfs_fd, ZFS_IOC_OBJSET_RECVD_PROPS, &zc) != 0) { 363 if (errno == ENOMEM) { 364 if (zcmd_expand_dst_nvlist(hdl, &zc) != 0) { 365 return (-1); 366 } 367 } else { 368 zcmd_free_nvlists(&zc); 369 return (-1); 370 } 371 } 372 373 err = zcmd_read_dst_nvlist(zhp->zfs_hdl, &zc, &recvdprops); 374 zcmd_free_nvlists(&zc); 375 if (err != 0) 376 return (-1); 377 378 nvlist_free(zhp->zfs_recvd_props); 379 zhp->zfs_recvd_props = recvdprops; 380 381 return (0); 382} 383 384static int 385put_stats_zhdl(zfs_handle_t *zhp, zfs_cmd_t *zc) 386{ 387 nvlist_t *allprops, *userprops; 388 389 zhp->zfs_dmustats = zc->zc_objset_stats; /* structure assignment */ 390 391 if (zcmd_read_dst_nvlist(zhp->zfs_hdl, zc, &allprops) != 0) { 392 return (-1); 393 } 394 395 /* 396 * XXX Why do we store the user props separately, in addition to 397 * storing them in zfs_props? 398 */ 399 if ((userprops = process_user_props(zhp, allprops)) == NULL) { 400 nvlist_free(allprops); 401 return (-1); 402 } 403 404 nvlist_free(zhp->zfs_props); 405 nvlist_free(zhp->zfs_user_props); 406 407 zhp->zfs_props = allprops; 408 zhp->zfs_user_props = userprops; 409 410 return (0); 411} 412 413static int 414get_stats(zfs_handle_t *zhp) 415{ 416 int rc = 0; 417 zfs_cmd_t zc = { 0 }; 418 419 if (zcmd_alloc_dst_nvlist(zhp->zfs_hdl, &zc, 0) != 0) 420 return (-1); 421 if (get_stats_ioctl(zhp, &zc) != 0) 422 rc = -1; 423 else if (put_stats_zhdl(zhp, &zc) != 0) 424 rc = -1; 425 zcmd_free_nvlists(&zc); 426 return (rc); 427} 428 429/* 430 * Refresh the properties currently stored in the handle. 431 */ 432void 433zfs_refresh_properties(zfs_handle_t *zhp) 434{ 435 (void) get_stats(zhp); 436} 437 438/* 439 * Makes a handle from the given dataset name. Used by zfs_open() and 440 * zfs_iter_* to create child handles on the fly. 441 */ 442static int 443make_dataset_handle_common(zfs_handle_t *zhp, zfs_cmd_t *zc) 444{ 445 if (put_stats_zhdl(zhp, zc) != 0) 446 return (-1); 447 448 /* 449 * We've managed to open the dataset and gather statistics. Determine 450 * the high-level type. 451 */ 452 if (zhp->zfs_dmustats.dds_type == DMU_OST_ZVOL) 453 zhp->zfs_head_type = ZFS_TYPE_VOLUME; 454 else if (zhp->zfs_dmustats.dds_type == DMU_OST_ZFS) 455 zhp->zfs_head_type = ZFS_TYPE_FILESYSTEM; 456 else 457 abort(); 458 459 if (zhp->zfs_dmustats.dds_is_snapshot) 460 zhp->zfs_type = ZFS_TYPE_SNAPSHOT; 461 else if (zhp->zfs_dmustats.dds_type == DMU_OST_ZVOL) 462 zhp->zfs_type = ZFS_TYPE_VOLUME; 463 else if (zhp->zfs_dmustats.dds_type == DMU_OST_ZFS) 464 zhp->zfs_type = ZFS_TYPE_FILESYSTEM; 465 else 466 abort(); /* we should never see any other types */ 467 468 if ((zhp->zpool_hdl = zpool_handle(zhp)) == NULL) 469 return (-1); 470 471 return (0); 472} 473 474zfs_handle_t * 475make_dataset_handle(libzfs_handle_t *hdl, const char *path) 476{ 477 zfs_cmd_t zc = { 0 }; 478 479 zfs_handle_t *zhp = calloc(sizeof (zfs_handle_t), 1); 480 481 if (zhp == NULL) 482 return (NULL); 483 484 zhp->zfs_hdl = hdl; 485 (void) strlcpy(zhp->zfs_name, path, sizeof (zhp->zfs_name)); 486 if (zcmd_alloc_dst_nvlist(hdl, &zc, 0) != 0) { 487 free(zhp); 488 return (NULL); 489 } 490 if (get_stats_ioctl(zhp, &zc) == -1) { 491 zcmd_free_nvlists(&zc); 492 free(zhp); 493 return (NULL); 494 } 495 if (make_dataset_handle_common(zhp, &zc) == -1) { 496 free(zhp); 497 zhp = NULL; 498 } 499 zcmd_free_nvlists(&zc); 500 return (zhp); 501} 502 503zfs_handle_t * 504make_dataset_handle_zc(libzfs_handle_t *hdl, zfs_cmd_t *zc) 505{ 506 zfs_handle_t *zhp = calloc(sizeof (zfs_handle_t), 1); 507 508 if (zhp == NULL) 509 return (NULL); 510 511 zhp->zfs_hdl = hdl; 512 (void) strlcpy(zhp->zfs_name, zc->zc_name, sizeof (zhp->zfs_name)); 513 if (make_dataset_handle_common(zhp, zc) == -1) { 514 free(zhp); 515 return (NULL); 516 } 517 return (zhp); 518} 519 520zfs_handle_t * 521make_dataset_simple_handle_zc(zfs_handle_t *pzhp, zfs_cmd_t *zc) 522{ 523 zfs_handle_t *zhp = calloc(sizeof (zfs_handle_t), 1); 524 525 if (zhp == NULL) 526 return (NULL); 527 528 zhp->zfs_hdl = pzhp->zfs_hdl; 529 (void) strlcpy(zhp->zfs_name, zc->zc_name, sizeof (zhp->zfs_name)); 530 zhp->zfs_head_type = pzhp->zfs_type; 531 zhp->zfs_type = ZFS_TYPE_SNAPSHOT; 532 zhp->zpool_hdl = zpool_handle(zhp); 533 return (zhp); 534} 535 536zfs_handle_t * 537zfs_handle_dup(zfs_handle_t *zhp_orig) 538{ 539 zfs_handle_t *zhp = calloc(sizeof (zfs_handle_t), 1); 540 541 if (zhp == NULL) 542 return (NULL); 543 544 zhp->zfs_hdl = zhp_orig->zfs_hdl; 545 zhp->zpool_hdl = zhp_orig->zpool_hdl; 546 (void) strlcpy(zhp->zfs_name, zhp_orig->zfs_name, 547 sizeof (zhp->zfs_name)); 548 zhp->zfs_type = zhp_orig->zfs_type; 549 zhp->zfs_head_type = zhp_orig->zfs_head_type; 550 zhp->zfs_dmustats = zhp_orig->zfs_dmustats; 551 if (zhp_orig->zfs_props != NULL) { 552 if (nvlist_dup(zhp_orig->zfs_props, &zhp->zfs_props, 0) != 0) { 553 (void) no_memory(zhp->zfs_hdl); 554 zfs_close(zhp); 555 return (NULL); 556 } 557 } 558 if (zhp_orig->zfs_user_props != NULL) { 559 if (nvlist_dup(zhp_orig->zfs_user_props, 560 &zhp->zfs_user_props, 0) != 0) { 561 (void) no_memory(zhp->zfs_hdl); 562 zfs_close(zhp); 563 return (NULL); 564 } 565 } 566 if (zhp_orig->zfs_recvd_props != NULL) { 567 if (nvlist_dup(zhp_orig->zfs_recvd_props, 568 &zhp->zfs_recvd_props, 0)) { 569 (void) no_memory(zhp->zfs_hdl); 570 zfs_close(zhp); 571 return (NULL); 572 } 573 } 574 zhp->zfs_mntcheck = zhp_orig->zfs_mntcheck; 575 if (zhp_orig->zfs_mntopts != NULL) { 576 zhp->zfs_mntopts = zfs_strdup(zhp_orig->zfs_hdl, 577 zhp_orig->zfs_mntopts); 578 } 579 zhp->zfs_props_table = zhp_orig->zfs_props_table; 580 return (zhp); 581} 582 583boolean_t 584zfs_bookmark_exists(const char *path) 585{ 586 nvlist_t *bmarks; 587 nvlist_t *props; 588 char fsname[ZFS_MAXNAMELEN]; 589 char *bmark_name; 590 char *pound; 591 int err; 592 boolean_t rv; 593 594 595 (void) strlcpy(fsname, path, sizeof (fsname)); 596 pound = strchr(fsname, '#'); 597 if (pound == NULL) 598 return (B_FALSE); 599 600 *pound = '\0'; 601 bmark_name = pound + 1; 602 props = fnvlist_alloc(); 603 err = lzc_get_bookmarks(fsname, props, &bmarks); 604 nvlist_free(props); 605 if (err != 0) { 606 nvlist_free(bmarks); 607 return (B_FALSE); 608 } 609 610 rv = nvlist_exists(bmarks, bmark_name); 611 nvlist_free(bmarks); 612 return (rv); 613} 614 615zfs_handle_t * 616make_bookmark_handle(zfs_handle_t *parent, const char *path, 617 nvlist_t *bmark_props) 618{ 619 zfs_handle_t *zhp = calloc(sizeof (zfs_handle_t), 1); 620 621 if (zhp == NULL) 622 return (NULL); 623 624 /* Fill in the name. */ 625 zhp->zfs_hdl = parent->zfs_hdl; 626 (void) strlcpy(zhp->zfs_name, path, sizeof (zhp->zfs_name)); 627 628 /* Set the property lists. */ 629 if (nvlist_dup(bmark_props, &zhp->zfs_props, 0) != 0) { 630 free(zhp); 631 return (NULL); 632 } 633 634 /* Set the types. */ 635 zhp->zfs_head_type = parent->zfs_head_type; 636 zhp->zfs_type = ZFS_TYPE_BOOKMARK; 637 638 if ((zhp->zpool_hdl = zpool_handle(zhp)) == NULL) { 639 nvlist_free(zhp->zfs_props); 640 free(zhp); 641 return (NULL); 642 } 643 644 return (zhp); 645} 646 647/* 648 * Opens the given snapshot, filesystem, or volume. The 'types' 649 * argument is a mask of acceptable types. The function will print an 650 * appropriate error message and return NULL if it can't be opened. 651 */ 652zfs_handle_t * 653zfs_open(libzfs_handle_t *hdl, const char *path, int types) 654{ 655 zfs_handle_t *zhp; 656 char errbuf[1024]; 657 658 (void) snprintf(errbuf, sizeof (errbuf), 659 dgettext(TEXT_DOMAIN, "cannot open '%s'"), path); 660 661 /* 662 * Validate the name before we even try to open it. 663 */ 664 if (!zfs_validate_name(hdl, path, ZFS_TYPE_DATASET, B_FALSE)) { 665 zfs_error_aux(hdl, dgettext(TEXT_DOMAIN, 666 "invalid dataset name")); 667 (void) zfs_error(hdl, EZFS_INVALIDNAME, errbuf); 668 return (NULL); 669 } 670 671 /* 672 * Try to get stats for the dataset, which will tell us if it exists. 673 */ 674 errno = 0; 675 if ((zhp = make_dataset_handle(hdl, path)) == NULL) { 676 (void) zfs_standard_error(hdl, errno, errbuf); 677 return (NULL); 678 } 679 680 if (zhp == NULL) { 681 char *at = strchr(path, '@'); 682 683 if (at != NULL) 684 *at = '\0'; 685 errno = 0; 686 if ((zhp = make_dataset_handle(hdl, path)) == NULL) { 687 (void) zfs_standard_error(hdl, errno, errbuf); 688 return (NULL); 689 } 690 if (at != NULL) 691 *at = '@'; 692 (void) strlcpy(zhp->zfs_name, path, sizeof (zhp->zfs_name)); 693 zhp->zfs_type = ZFS_TYPE_SNAPSHOT; 694 } 695 696 if (!(types & zhp->zfs_type)) { 697 (void) zfs_error(hdl, EZFS_BADTYPE, errbuf); 698 zfs_close(zhp); 699 return (NULL); 700 } 701 702 return (zhp); 703} 704 705/* 706 * Release a ZFS handle. Nothing to do but free the associated memory. 707 */ 708void 709zfs_close(zfs_handle_t *zhp) 710{ 711 if (zhp->zfs_mntopts) 712 free(zhp->zfs_mntopts); 713 nvlist_free(zhp->zfs_props); 714 nvlist_free(zhp->zfs_user_props); 715 nvlist_free(zhp->zfs_recvd_props); 716 free(zhp); 717} 718 719typedef struct mnttab_node { 720 struct mnttab mtn_mt; 721 avl_node_t mtn_node; 722} mnttab_node_t; 723 724static int 725libzfs_mnttab_cache_compare(const void *arg1, const void *arg2) 726{ 727 const mnttab_node_t *mtn1 = arg1; 728 const mnttab_node_t *mtn2 = arg2; 729 int rv; 730 731 rv = strcmp(mtn1->mtn_mt.mnt_special, mtn2->mtn_mt.mnt_special); 732 733 if (rv == 0) 734 return (0); 735 return (rv > 0 ? 1 : -1); 736} 737 738void 739libzfs_mnttab_init(libzfs_handle_t *hdl) 740{ 741 assert(avl_numnodes(&hdl->libzfs_mnttab_cache) == 0); 742 avl_create(&hdl->libzfs_mnttab_cache, libzfs_mnttab_cache_compare, 743 sizeof (mnttab_node_t), offsetof(mnttab_node_t, mtn_node)); 744} 745 746void 747libzfs_mnttab_update(libzfs_handle_t *hdl) 748{ 749 struct mnttab entry; 750 751 rewind(hdl->libzfs_mnttab); 752 while (getmntent(hdl->libzfs_mnttab, &entry) == 0) { 753 mnttab_node_t *mtn; 754 755 if (strcmp(entry.mnt_fstype, MNTTYPE_ZFS) != 0) 756 continue; 757 mtn = zfs_alloc(hdl, sizeof (mnttab_node_t)); 758 mtn->mtn_mt.mnt_special = zfs_strdup(hdl, entry.mnt_special); 759 mtn->mtn_mt.mnt_mountp = zfs_strdup(hdl, entry.mnt_mountp); 760 mtn->mtn_mt.mnt_fstype = zfs_strdup(hdl, entry.mnt_fstype); 761 mtn->mtn_mt.mnt_mntopts = zfs_strdup(hdl, entry.mnt_mntopts); 762 avl_add(&hdl->libzfs_mnttab_cache, mtn); 763 } 764} 765 766void 767libzfs_mnttab_fini(libzfs_handle_t *hdl) 768{ 769 void *cookie = NULL; 770 mnttab_node_t *mtn; 771 772 while (mtn = avl_destroy_nodes(&hdl->libzfs_mnttab_cache, &cookie)) { 773 free(mtn->mtn_mt.mnt_special); 774 free(mtn->mtn_mt.mnt_mountp); 775 free(mtn->mtn_mt.mnt_fstype); 776 free(mtn->mtn_mt.mnt_mntopts); 777 free(mtn); 778 } 779 avl_destroy(&hdl->libzfs_mnttab_cache); 780} 781 782void 783libzfs_mnttab_cache(libzfs_handle_t *hdl, boolean_t enable) 784{ 785 hdl->libzfs_mnttab_enable = enable; 786} 787 788int 789libzfs_mnttab_find(libzfs_handle_t *hdl, const char *fsname, 790 struct mnttab *entry) 791{ 792 mnttab_node_t find; 793 mnttab_node_t *mtn; 794 795 if (!hdl->libzfs_mnttab_enable) { 796 struct mnttab srch = { 0 }; 797 798 if (avl_numnodes(&hdl->libzfs_mnttab_cache)) 799 libzfs_mnttab_fini(hdl); 800 rewind(hdl->libzfs_mnttab); 801 srch.mnt_special = (char *)fsname; 802 srch.mnt_fstype = MNTTYPE_ZFS; 803 if (getmntany(hdl->libzfs_mnttab, entry, &srch) == 0) 804 return (0); 805 else 806 return (ENOENT); 807 } 808 809 if (avl_numnodes(&hdl->libzfs_mnttab_cache) == 0) 810 libzfs_mnttab_update(hdl); 811 812 find.mtn_mt.mnt_special = (char *)fsname; 813 mtn = avl_find(&hdl->libzfs_mnttab_cache, &find, NULL); 814 if (mtn) { 815 *entry = mtn->mtn_mt; 816 return (0); 817 } 818 return (ENOENT); 819} 820 821void 822libzfs_mnttab_add(libzfs_handle_t *hdl, const char *special, 823 const char *mountp, const char *mntopts) 824{ 825 mnttab_node_t *mtn; 826 827 if (avl_numnodes(&hdl->libzfs_mnttab_cache) == 0) 828 return; 829 mtn = zfs_alloc(hdl, sizeof (mnttab_node_t)); 830 mtn->mtn_mt.mnt_special = zfs_strdup(hdl, special); 831 mtn->mtn_mt.mnt_mountp = zfs_strdup(hdl, mountp); 832 mtn->mtn_mt.mnt_fstype = zfs_strdup(hdl, MNTTYPE_ZFS); 833 mtn->mtn_mt.mnt_mntopts = zfs_strdup(hdl, mntopts); 834 avl_add(&hdl->libzfs_mnttab_cache, mtn); 835} 836 837void 838libzfs_mnttab_remove(libzfs_handle_t *hdl, const char *fsname) 839{ 840 mnttab_node_t find; 841 mnttab_node_t *ret; 842 843 find.mtn_mt.mnt_special = (char *)fsname; 844 if (ret = avl_find(&hdl->libzfs_mnttab_cache, (void *)&find, NULL)) { 845 avl_remove(&hdl->libzfs_mnttab_cache, ret); 846 free(ret->mtn_mt.mnt_special); 847 free(ret->mtn_mt.mnt_mountp); 848 free(ret->mtn_mt.mnt_fstype); 849 free(ret->mtn_mt.mnt_mntopts); 850 free(ret); 851 } 852} 853 854int 855zfs_spa_version(zfs_handle_t *zhp, int *spa_version) 856{ 857 zpool_handle_t *zpool_handle = zhp->zpool_hdl; 858 859 if (zpool_handle == NULL) 860 return (-1); 861 862 *spa_version = zpool_get_prop_int(zpool_handle, 863 ZPOOL_PROP_VERSION, NULL); 864 return (0); 865} 866 867/* 868 * The choice of reservation property depends on the SPA version. 869 */ 870static int 871zfs_which_resv_prop(zfs_handle_t *zhp, zfs_prop_t *resv_prop) 872{ 873 int spa_version; 874 875 if (zfs_spa_version(zhp, &spa_version) < 0) 876 return (-1); 877 878 if (spa_version >= SPA_VERSION_REFRESERVATION) 879 *resv_prop = ZFS_PROP_REFRESERVATION; 880 else 881 *resv_prop = ZFS_PROP_RESERVATION; 882 883 return (0); 884} 885 886/* 887 * Given an nvlist of properties to set, validates that they are correct, and 888 * parses any numeric properties (index, boolean, etc) if they are specified as 889 * strings. 890 */ 891nvlist_t * 892zfs_valid_proplist(libzfs_handle_t *hdl, zfs_type_t type, nvlist_t *nvl, 893 uint64_t zoned, zfs_handle_t *zhp, const char *errbuf) 894{ 895 nvpair_t *elem; 896 uint64_t intval; 897 char *strval; 898 zfs_prop_t prop; 899 nvlist_t *ret; 900 int chosen_normal = -1; 901 int chosen_utf = -1; 902 903 if (nvlist_alloc(&ret, NV_UNIQUE_NAME, 0) != 0) { 904 (void) no_memory(hdl); 905 return (NULL); 906 } 907 908 /* 909 * Make sure this property is valid and applies to this type. 910 */ 911 912 elem = NULL; 913 while ((elem = nvlist_next_nvpair(nvl, elem)) != NULL) { 914 const char *propname = nvpair_name(elem); 915 916 prop = zfs_name_to_prop(propname); 917 if (prop == ZPROP_INVAL && zfs_prop_user(propname)) { 918 /* 919 * This is a user property: make sure it's a 920 * string, and that it's less than ZAP_MAXNAMELEN. 921 */ 922 if (nvpair_type(elem) != DATA_TYPE_STRING) { 923 zfs_error_aux(hdl, dgettext(TEXT_DOMAIN, 924 "'%s' must be a string"), propname); 925 (void) zfs_error(hdl, EZFS_BADPROP, errbuf); 926 goto error; 927 } 928 929 if (strlen(nvpair_name(elem)) >= ZAP_MAXNAMELEN) { 930 zfs_error_aux(hdl, dgettext(TEXT_DOMAIN, 931 "property name '%s' is too long"), 932 propname); 933 (void) zfs_error(hdl, EZFS_BADPROP, errbuf); 934 goto error; 935 } 936 937 (void) nvpair_value_string(elem, &strval); 938 if (nvlist_add_string(ret, propname, strval) != 0) { 939 (void) no_memory(hdl); 940 goto error; 941 } 942 continue; 943 } 944 945 /* 946 * Currently, only user properties can be modified on 947 * snapshots. 948 */ 949 if (type == ZFS_TYPE_SNAPSHOT) { 950 zfs_error_aux(hdl, dgettext(TEXT_DOMAIN, 951 "this property can not be modified for snapshots")); 952 (void) zfs_error(hdl, EZFS_PROPTYPE, errbuf); 953 goto error; 954 } 955 956 if (prop == ZPROP_INVAL && zfs_prop_userquota(propname)) { 957 zfs_userquota_prop_t uqtype; 958 char newpropname[128]; 959 char domain[128]; 960 uint64_t rid; 961 uint64_t valary[3]; 962 963 if (userquota_propname_decode(propname, zoned, 964 &uqtype, domain, sizeof (domain), &rid) != 0) { 965 zfs_error_aux(hdl, 966 dgettext(TEXT_DOMAIN, 967 "'%s' has an invalid user/group name"), 968 propname); 969 (void) zfs_error(hdl, EZFS_BADPROP, errbuf); 970 goto error; 971 } 972 973 if (uqtype != ZFS_PROP_USERQUOTA && 974 uqtype != ZFS_PROP_GROUPQUOTA) { 975 zfs_error_aux(hdl, 976 dgettext(TEXT_DOMAIN, "'%s' is readonly"), 977 propname); 978 (void) zfs_error(hdl, EZFS_PROPREADONLY, 979 errbuf); 980 goto error; 981 } 982 983 if (nvpair_type(elem) == DATA_TYPE_STRING) { 984 (void) nvpair_value_string(elem, &strval); 985 if (strcmp(strval, "none") == 0) { 986 intval = 0; 987 } else if (zfs_nicestrtonum(hdl, 988 strval, &intval) != 0) { 989 (void) zfs_error(hdl, 990 EZFS_BADPROP, errbuf); 991 goto error; 992 } 993 } else if (nvpair_type(elem) == 994 DATA_TYPE_UINT64) { 995 (void) nvpair_value_uint64(elem, &intval); 996 if (intval == 0) { 997 zfs_error_aux(hdl, dgettext(TEXT_DOMAIN, 998 "use 'none' to disable " 999 "userquota/groupquota")); 1000 goto error; 1001 } 1002 } else { 1003 zfs_error_aux(hdl, dgettext(TEXT_DOMAIN, 1004 "'%s' must be a number"), propname); 1005 (void) zfs_error(hdl, EZFS_BADPROP, errbuf); 1006 goto error; 1007 } 1008 1009 /* 1010 * Encode the prop name as 1011 * userquota@<hex-rid>-domain, to make it easy 1012 * for the kernel to decode. 1013 */ 1014 (void) snprintf(newpropname, sizeof (newpropname), 1015 "%s%llx-%s", zfs_userquota_prop_prefixes[uqtype], 1016 (longlong_t)rid, domain); 1017 valary[0] = uqtype; 1018 valary[1] = rid; 1019 valary[2] = intval; 1020 if (nvlist_add_uint64_array(ret, newpropname, 1021 valary, 3) != 0) { 1022 (void) no_memory(hdl); 1023 goto error; 1024 } 1025 continue; 1026 } else if (prop == ZPROP_INVAL && zfs_prop_written(propname)) { 1027 zfs_error_aux(hdl, dgettext(TEXT_DOMAIN, 1028 "'%s' is readonly"), 1029 propname); 1030 (void) zfs_error(hdl, EZFS_PROPREADONLY, errbuf); 1031 goto error; 1032 } 1033 1034 if (prop == ZPROP_INVAL) { 1035 zfs_error_aux(hdl, dgettext(TEXT_DOMAIN, 1036 "invalid property '%s'"), propname); 1037 (void) zfs_error(hdl, EZFS_BADPROP, errbuf); 1038 goto error; 1039 } 1040 1041 if (!zfs_prop_valid_for_type(prop, type)) { 1042 zfs_error_aux(hdl, 1043 dgettext(TEXT_DOMAIN, "'%s' does not " 1044 "apply to datasets of this type"), propname); 1045 (void) zfs_error(hdl, EZFS_PROPTYPE, errbuf); 1046 goto error; 1047 } 1048 1049 if (zfs_prop_readonly(prop) && 1050 (!zfs_prop_setonce(prop) || zhp != NULL)) { 1051 zfs_error_aux(hdl, 1052 dgettext(TEXT_DOMAIN, "'%s' is readonly"), 1053 propname); 1054 (void) zfs_error(hdl, EZFS_PROPREADONLY, errbuf); 1055 goto error; 1056 } 1057 1058 if (zprop_parse_value(hdl, elem, prop, type, ret, 1059 &strval, &intval, errbuf) != 0) 1060 goto error; 1061 1062 /* 1063 * Perform some additional checks for specific properties. 1064 */ 1065 switch (prop) { 1066 case ZFS_PROP_VERSION: 1067 { 1068 int version; 1069 1070 if (zhp == NULL) 1071 break; 1072 version = zfs_prop_get_int(zhp, ZFS_PROP_VERSION); 1073 if (intval < version) { 1074 zfs_error_aux(hdl, dgettext(TEXT_DOMAIN, 1075 "Can not downgrade; already at version %u"), 1076 version); 1077 (void) zfs_error(hdl, EZFS_BADPROP, errbuf); 1078 goto error; 1079 } 1080 break; 1081 } 1082 1083 case ZFS_PROP_VOLBLOCKSIZE: 1084 case ZFS_PROP_RECORDSIZE: 1085 { 1086 int maxbs = SPA_MAXBLOCKSIZE; 1087 if (zhp != NULL) { 1088 maxbs = zpool_get_prop_int(zhp->zpool_hdl, 1089 ZPOOL_PROP_MAXBLOCKSIZE, NULL); 1090 } 1091 /* 1092 * Volumes are limited to a volblocksize of 128KB, 1093 * because they typically service workloads with 1094 * small random writes, which incur a large performance 1095 * penalty with large blocks. 1096 */ 1097 if (prop == ZFS_PROP_VOLBLOCKSIZE) 1098 maxbs = SPA_OLD_MAXBLOCKSIZE; 1099 /* 1100 * The value must be a power of two between 1101 * SPA_MINBLOCKSIZE and maxbs. 1102 */ 1103 if (intval < SPA_MINBLOCKSIZE || 1104 intval > maxbs || !ISP2(intval)) { 1105 zfs_error_aux(hdl, dgettext(TEXT_DOMAIN, 1106 "'%s' must be power of 2 from 512B " 1107 "to %uKB"), propname, maxbs >> 10); 1108 (void) zfs_error(hdl, EZFS_BADPROP, errbuf); 1109 goto error; 1110 } 1111 break; 1112 } 1113 case ZFS_PROP_MLSLABEL: 1114 { 1115#ifdef illumos 1116 /* 1117 * Verify the mlslabel string and convert to 1118 * internal hex label string. 1119 */ 1120 1121 m_label_t *new_sl; 1122 char *hex = NULL; /* internal label string */ 1123 1124 /* Default value is already OK. */ 1125 if (strcasecmp(strval, ZFS_MLSLABEL_DEFAULT) == 0) 1126 break; 1127 1128 /* Verify the label can be converted to binary form */ 1129 if (((new_sl = m_label_alloc(MAC_LABEL)) == NULL) || 1130 (str_to_label(strval, &new_sl, MAC_LABEL, 1131 L_NO_CORRECTION, NULL) == -1)) { 1132 goto badlabel; 1133 } 1134 1135 /* Now translate to hex internal label string */ 1136 if (label_to_str(new_sl, &hex, M_INTERNAL, 1137 DEF_NAMES) != 0) { 1138 if (hex) 1139 free(hex); 1140 goto badlabel; 1141 } 1142 m_label_free(new_sl); 1143 1144 /* If string is already in internal form, we're done. */ 1145 if (strcmp(strval, hex) == 0) { 1146 free(hex); 1147 break; 1148 } 1149 1150 /* Replace the label string with the internal form. */ 1151 (void) nvlist_remove(ret, zfs_prop_to_name(prop), 1152 DATA_TYPE_STRING); 1153 verify(nvlist_add_string(ret, zfs_prop_to_name(prop), 1154 hex) == 0); 1155 free(hex); 1156 1157 break; 1158 1159badlabel: 1160 zfs_error_aux(hdl, dgettext(TEXT_DOMAIN, 1161 "invalid mlslabel '%s'"), strval); 1162 (void) zfs_error(hdl, EZFS_BADPROP, errbuf); 1163 m_label_free(new_sl); /* OK if null */ 1164#else /* !illumos */ 1165 zfs_error_aux(hdl, dgettext(TEXT_DOMAIN, 1166 "mlslabel is not supported on FreeBSD")); 1167 (void) zfs_error(hdl, EZFS_BADPROP, errbuf); 1168#endif /* illumos */ 1169 goto error; 1170 1171 } 1172 1173 case ZFS_PROP_MOUNTPOINT: 1174 { 1175 namecheck_err_t why; 1176 1177 if (strcmp(strval, ZFS_MOUNTPOINT_NONE) == 0 || 1178 strcmp(strval, ZFS_MOUNTPOINT_LEGACY) == 0) 1179 break; 1180 1181 if (mountpoint_namecheck(strval, &why)) { 1182 switch (why) { 1183 case NAME_ERR_LEADING_SLASH: 1184 zfs_error_aux(hdl, 1185 dgettext(TEXT_DOMAIN, 1186 "'%s' must be an absolute path, " 1187 "'none', or 'legacy'"), propname); 1188 break; 1189 case NAME_ERR_TOOLONG: 1190 zfs_error_aux(hdl, 1191 dgettext(TEXT_DOMAIN, 1192 "component of '%s' is too long"), 1193 propname); 1194 break; 1195 } 1196 (void) zfs_error(hdl, EZFS_BADPROP, errbuf); 1197 goto error; 1198 } 1199 } 1200 1201 /*FALLTHRU*/ 1202 1203 case ZFS_PROP_SHARESMB: 1204 case ZFS_PROP_SHARENFS: 1205 /* 1206 * For the mountpoint and sharenfs or sharesmb 1207 * properties, check if it can be set in a 1208 * global/non-global zone based on 1209 * the zoned property value: 1210 * 1211 * global zone non-global zone 1212 * -------------------------------------------------- 1213 * zoned=on mountpoint (no) mountpoint (yes) 1214 * sharenfs (no) sharenfs (no) 1215 * sharesmb (no) sharesmb (no) 1216 * 1217 * zoned=off mountpoint (yes) N/A 1218 * sharenfs (yes) 1219 * sharesmb (yes) 1220 */ 1221 if (zoned) { 1222 if (getzoneid() == GLOBAL_ZONEID) { 1223 zfs_error_aux(hdl, dgettext(TEXT_DOMAIN, 1224 "'%s' cannot be set on " 1225 "dataset in a non-global zone"), 1226 propname); 1227 (void) zfs_error(hdl, EZFS_ZONED, 1228 errbuf); 1229 goto error; 1230 } else if (prop == ZFS_PROP_SHARENFS || 1231 prop == ZFS_PROP_SHARESMB) { 1232 zfs_error_aux(hdl, dgettext(TEXT_DOMAIN, 1233 "'%s' cannot be set in " 1234 "a non-global zone"), propname); 1235 (void) zfs_error(hdl, EZFS_ZONED, 1236 errbuf); 1237 goto error; 1238 } 1239 } else if (getzoneid() != GLOBAL_ZONEID) { 1240 /* 1241 * If zoned property is 'off', this must be in 1242 * a global zone. If not, something is wrong. 1243 */ 1244 zfs_error_aux(hdl, dgettext(TEXT_DOMAIN, 1245 "'%s' cannot be set while dataset " 1246 "'zoned' property is set"), propname); 1247 (void) zfs_error(hdl, EZFS_ZONED, errbuf); 1248 goto error; 1249 } 1250 1251 /* 1252 * At this point, it is legitimate to set the 1253 * property. Now we want to make sure that the 1254 * property value is valid if it is sharenfs. 1255 */ 1256 if ((prop == ZFS_PROP_SHARENFS || 1257 prop == ZFS_PROP_SHARESMB) && 1258 strcmp(strval, "on") != 0 && 1259 strcmp(strval, "off") != 0) { 1260 zfs_share_proto_t proto; 1261 1262 if (prop == ZFS_PROP_SHARESMB) 1263 proto = PROTO_SMB; 1264 else 1265 proto = PROTO_NFS; 1266 1267 /* 1268 * Must be an valid sharing protocol 1269 * option string so init the libshare 1270 * in order to enable the parser and 1271 * then parse the options. We use the 1272 * control API since we don't care about 1273 * the current configuration and don't 1274 * want the overhead of loading it 1275 * until we actually do something. 1276 */ 1277 1278 if (zfs_init_libshare(hdl, 1279 SA_INIT_CONTROL_API) != SA_OK) { 1280 /* 1281 * An error occurred so we can't do 1282 * anything 1283 */ 1284 zfs_error_aux(hdl, dgettext(TEXT_DOMAIN, 1285 "'%s' cannot be set: problem " 1286 "in share initialization"), 1287 propname); 1288 (void) zfs_error(hdl, EZFS_BADPROP, 1289 errbuf); 1290 goto error; 1291 } 1292 1293 if (zfs_parse_options(strval, proto) != SA_OK) { 1294 /* 1295 * There was an error in parsing so 1296 * deal with it by issuing an error 1297 * message and leaving after 1298 * uninitializing the the libshare 1299 * interface. 1300 */ 1301 zfs_error_aux(hdl, dgettext(TEXT_DOMAIN, 1302 "'%s' cannot be set to invalid " 1303 "options"), propname); 1304 (void) zfs_error(hdl, EZFS_BADPROP, 1305 errbuf); 1306 zfs_uninit_libshare(hdl); 1307 goto error; 1308 } 1309 zfs_uninit_libshare(hdl); 1310 } 1311 1312 break; 1313 case ZFS_PROP_UTF8ONLY: 1314 chosen_utf = (int)intval; 1315 break; 1316 case ZFS_PROP_NORMALIZE: 1317 chosen_normal = (int)intval; 1318 break; 1319 } 1320 1321 /* 1322 * For changes to existing volumes, we have some additional 1323 * checks to enforce. 1324 */ 1325 if (type == ZFS_TYPE_VOLUME && zhp != NULL) { 1326 uint64_t volsize = zfs_prop_get_int(zhp, 1327 ZFS_PROP_VOLSIZE); 1328 uint64_t blocksize = zfs_prop_get_int(zhp, 1329 ZFS_PROP_VOLBLOCKSIZE); 1330 char buf[64]; 1331 1332 switch (prop) { 1333 case ZFS_PROP_RESERVATION: 1334 case ZFS_PROP_REFRESERVATION: 1335 if (intval > volsize) { 1336 zfs_error_aux(hdl, dgettext(TEXT_DOMAIN, 1337 "'%s' is greater than current " 1338 "volume size"), propname); 1339 (void) zfs_error(hdl, EZFS_BADPROP, 1340 errbuf); 1341 goto error; 1342 } 1343 break; 1344 1345 case ZFS_PROP_VOLSIZE: 1346 if (intval % blocksize != 0) { 1347 zfs_nicenum(blocksize, buf, 1348 sizeof (buf)); 1349 zfs_error_aux(hdl, dgettext(TEXT_DOMAIN, 1350 "'%s' must be a multiple of " 1351 "volume block size (%s)"), 1352 propname, buf); 1353 (void) zfs_error(hdl, EZFS_BADPROP, 1354 errbuf); 1355 goto error; 1356 } 1357 1358 if (intval == 0) { 1359 zfs_error_aux(hdl, dgettext(TEXT_DOMAIN, 1360 "'%s' cannot be zero"), 1361 propname); 1362 (void) zfs_error(hdl, EZFS_BADPROP, 1363 errbuf); 1364 goto error; 1365 } 1366 break; 1367 } 1368 } 1369 } 1370 1371 /* 1372 * If normalization was chosen, but no UTF8 choice was made, 1373 * enforce rejection of non-UTF8 names. 1374 * 1375 * If normalization was chosen, but rejecting non-UTF8 names 1376 * was explicitly not chosen, it is an error. 1377 */ 1378 if (chosen_normal > 0 && chosen_utf < 0) { 1379 if (nvlist_add_uint64(ret, 1380 zfs_prop_to_name(ZFS_PROP_UTF8ONLY), 1) != 0) { 1381 (void) no_memory(hdl); 1382 goto error; 1383 } 1384 } else if (chosen_normal > 0 && chosen_utf == 0) { 1385 zfs_error_aux(hdl, dgettext(TEXT_DOMAIN, 1386 "'%s' must be set 'on' if normalization chosen"), 1387 zfs_prop_to_name(ZFS_PROP_UTF8ONLY)); 1388 (void) zfs_error(hdl, EZFS_BADPROP, errbuf); 1389 goto error; 1390 } 1391 return (ret); 1392 1393error: 1394 nvlist_free(ret); 1395 return (NULL); 1396} 1397 1398int 1399zfs_add_synthetic_resv(zfs_handle_t *zhp, nvlist_t *nvl) 1400{ 1401 uint64_t old_volsize; 1402 uint64_t new_volsize; 1403 uint64_t old_reservation; 1404 uint64_t new_reservation; 1405 zfs_prop_t resv_prop; 1406 nvlist_t *props; 1407 1408 /* 1409 * If this is an existing volume, and someone is setting the volsize, 1410 * make sure that it matches the reservation, or add it if necessary. 1411 */ 1412 old_volsize = zfs_prop_get_int(zhp, ZFS_PROP_VOLSIZE); 1413 if (zfs_which_resv_prop(zhp, &resv_prop) < 0) 1414 return (-1); 1415 old_reservation = zfs_prop_get_int(zhp, resv_prop); 1416 1417 props = fnvlist_alloc(); 1418 fnvlist_add_uint64(props, zfs_prop_to_name(ZFS_PROP_VOLBLOCKSIZE), 1419 zfs_prop_get_int(zhp, ZFS_PROP_VOLBLOCKSIZE)); 1420 1421 if ((zvol_volsize_to_reservation(old_volsize, props) != 1422 old_reservation) || nvlist_exists(nvl, 1423 zfs_prop_to_name(resv_prop))) { 1424 fnvlist_free(props); 1425 return (0); 1426 } 1427 if (nvlist_lookup_uint64(nvl, zfs_prop_to_name(ZFS_PROP_VOLSIZE), 1428 &new_volsize) != 0) { 1429 fnvlist_free(props); 1430 return (-1); 1431 } 1432 new_reservation = zvol_volsize_to_reservation(new_volsize, props); 1433 fnvlist_free(props); 1434 1435 if (nvlist_add_uint64(nvl, zfs_prop_to_name(resv_prop), 1436 new_reservation) != 0) { 1437 (void) no_memory(zhp->zfs_hdl); 1438 return (-1); 1439 } 1440 return (1); 1441} 1442 1443void 1444zfs_setprop_error(libzfs_handle_t *hdl, zfs_prop_t prop, int err, 1445 char *errbuf) 1446{ 1447 switch (err) { 1448 1449 case ENOSPC: 1450 /* 1451 * For quotas and reservations, ENOSPC indicates 1452 * something different; setting a quota or reservation 1453 * doesn't use any disk space. 1454 */ 1455 switch (prop) { 1456 case ZFS_PROP_QUOTA: 1457 case ZFS_PROP_REFQUOTA: 1458 zfs_error_aux(hdl, dgettext(TEXT_DOMAIN, 1459 "size is less than current used or " 1460 "reserved space")); 1461 (void) zfs_error(hdl, EZFS_PROPSPACE, errbuf); 1462 break; 1463 1464 case ZFS_PROP_RESERVATION: 1465 case ZFS_PROP_REFRESERVATION: 1466 zfs_error_aux(hdl, dgettext(TEXT_DOMAIN, 1467 "size is greater than available space")); 1468 (void) zfs_error(hdl, EZFS_PROPSPACE, errbuf); 1469 break; 1470 1471 default: 1472 (void) zfs_standard_error(hdl, err, errbuf); 1473 break; 1474 } 1475 break; 1476 1477 case EBUSY: 1478 (void) zfs_standard_error(hdl, EBUSY, errbuf); 1479 break; 1480 1481 case EROFS: 1482 (void) zfs_error(hdl, EZFS_DSREADONLY, errbuf); 1483 break; 1484 1485 case E2BIG: 1486 zfs_error_aux(hdl, dgettext(TEXT_DOMAIN, 1487 "property value too long")); 1488 (void) zfs_error(hdl, EZFS_BADPROP, errbuf); 1489 break; 1490 1491 case ENOTSUP: 1492 zfs_error_aux(hdl, dgettext(TEXT_DOMAIN, 1493 "pool and or dataset must be upgraded to set this " 1494 "property or value")); 1495 (void) zfs_error(hdl, EZFS_BADVERSION, errbuf); 1496 break; 1497 1498 case ERANGE: 1499 case EDOM: 1500 if (prop == ZFS_PROP_COMPRESSION || 1501 prop == ZFS_PROP_RECORDSIZE) { 1502 (void) zfs_error_aux(hdl, dgettext(TEXT_DOMAIN, 1503 "property setting is not allowed on " 1504 "bootable datasets")); 1505 (void) zfs_error(hdl, EZFS_NOTSUP, errbuf); 1506 } else if (prop == ZFS_PROP_CHECKSUM || 1507 prop == ZFS_PROP_DEDUP) { 1508 (void) zfs_error_aux(hdl, dgettext(TEXT_DOMAIN, 1509 "property setting is not allowed on " 1510 "root pools")); 1511 (void) zfs_error(hdl, EZFS_NOTSUP, errbuf); 1512 } else { 1513 (void) zfs_standard_error(hdl, err, errbuf); 1514 } 1515 break; 1516 1517 case EINVAL: 1518 if (prop == ZPROP_INVAL) { 1519 (void) zfs_error(hdl, EZFS_BADPROP, errbuf); 1520 } else { 1521 (void) zfs_standard_error(hdl, err, errbuf); 1522 } 1523 break; 1524 1525 case EOVERFLOW: 1526 /* 1527 * This platform can't address a volume this big. 1528 */ 1529#ifdef _ILP32 1530 if (prop == ZFS_PROP_VOLSIZE) { 1531 (void) zfs_error(hdl, EZFS_VOLTOOBIG, errbuf); 1532 break; 1533 } 1534#endif 1535 /* FALLTHROUGH */ 1536 default: 1537 (void) zfs_standard_error(hdl, err, errbuf); 1538 } 1539} 1540 1541/* 1542 * Given a property name and value, set the property for the given dataset. 1543 */ 1544int 1545zfs_prop_set(zfs_handle_t *zhp, const char *propname, const char *propval) 1546{ 1547 int ret = -1; 1548 char errbuf[1024]; 1549 libzfs_handle_t *hdl = zhp->zfs_hdl; 1550 nvlist_t *nvl = NULL; 1551 1552 (void) snprintf(errbuf, sizeof (errbuf), 1553 dgettext(TEXT_DOMAIN, "cannot set property for '%s'"), 1554 zhp->zfs_name); 1555 1556 if (nvlist_alloc(&nvl, NV_UNIQUE_NAME, 0) != 0 || 1557 nvlist_add_string(nvl, propname, propval) != 0) { 1558 (void) no_memory(hdl); 1559 goto error; 1560 } 1561 1562 ret = zfs_prop_set_list(zhp, nvl); 1563 1564error: 1565 nvlist_free(nvl); 1566 return (ret); 1567} 1568 1569 1570 1571/* 1572 * Given an nvlist of property names and values, set the properties for the 1573 * given dataset. 1574 */ 1575int 1576zfs_prop_set_list(zfs_handle_t *zhp, nvlist_t *props) 1577{ 1578 zfs_cmd_t zc = { 0 }; 1579 int ret = -1; 1580 prop_changelist_t **cls = NULL; 1581 int cl_idx; 1582 char errbuf[1024]; 1583 libzfs_handle_t *hdl = zhp->zfs_hdl; 1584 nvlist_t *nvl; 1585 int nvl_len; 1586 int added_resv; 1587 1588 (void) snprintf(errbuf, sizeof (errbuf), 1589 dgettext(TEXT_DOMAIN, "cannot set property for '%s'"), 1590 zhp->zfs_name); 1591 1592 if ((nvl = zfs_valid_proplist(hdl, zhp->zfs_type, props, 1593 zfs_prop_get_int(zhp, ZFS_PROP_ZONED), zhp, errbuf)) == NULL) 1594 goto error; 1595 1596 /* 1597 * We have to check for any extra properties which need to be added 1598 * before computing the length of the nvlist. 1599 */ 1600 for (nvpair_t *elem = nvlist_next_nvpair(nvl, NULL); 1601 elem != NULL; 1602 elem = nvlist_next_nvpair(nvl, elem)) { 1603 if (zfs_name_to_prop(nvpair_name(elem)) == ZFS_PROP_VOLSIZE && 1604 (added_resv = zfs_add_synthetic_resv(zhp, nvl)) == -1) { 1605 goto error; 1606 } 1607 } 1608 /* 1609 * Check how many properties we're setting and allocate an array to 1610 * store changelist pointers for postfix(). 1611 */ 1612 nvl_len = 0; 1613 for (nvpair_t *elem = nvlist_next_nvpair(nvl, NULL); 1614 elem != NULL; 1615 elem = nvlist_next_nvpair(nvl, elem)) 1616 nvl_len++; 1617 if ((cls = calloc(nvl_len, sizeof (prop_changelist_t *))) == NULL) 1618 goto error; 1619 1620 cl_idx = 0; 1621 for (nvpair_t *elem = nvlist_next_nvpair(nvl, NULL); 1622 elem != NULL; 1623 elem = nvlist_next_nvpair(nvl, elem)) { 1624 1625 zfs_prop_t prop = zfs_name_to_prop(nvpair_name(elem)); 1626 1627 assert(cl_idx < nvl_len); 1628 /* 1629 * We don't want to unmount & remount the dataset when changing 1630 * its canmount property to 'on' or 'noauto'. We only use 1631 * the changelist logic to unmount when setting canmount=off. 1632 */ 1633 if (!(prop == ZFS_PROP_CANMOUNT && 1634 fnvpair_value_uint64(elem) != ZFS_CANMOUNT_OFF)) { 1635 cls[cl_idx] = changelist_gather(zhp, prop, 0, 0); 1636 if (cls[cl_idx] == NULL) 1637 goto error; 1638 } 1639 1640 if (prop == ZFS_PROP_MOUNTPOINT && 1641 changelist_haszonedchild(cls[cl_idx])) { 1642 zfs_error_aux(hdl, dgettext(TEXT_DOMAIN, 1643 "child dataset with inherited mountpoint is used " 1644 "in a non-global zone")); 1645 ret = zfs_error(hdl, EZFS_ZONED, errbuf); 1646 goto error; 1647 } 1648 1649 /* We don't support those properties on FreeBSD. */ 1650 switch (prop) { 1651 case ZFS_PROP_DEVICES: 1652 case ZFS_PROP_ISCSIOPTIONS: 1653 case ZFS_PROP_XATTR: 1654 case ZFS_PROP_VSCAN: 1655 case ZFS_PROP_NBMAND: 1656 case ZFS_PROP_MLSLABEL: 1657 (void) snprintf(errbuf, sizeof (errbuf), 1658 "property '%s' not supported on FreeBSD", 1659 nvpair_name(elem)); 1660 ret = zfs_error(hdl, EZFS_PERM, errbuf); 1661 goto error; 1662 } 1663 1664 if (cls[cl_idx] != NULL && 1665 (ret = changelist_prefix(cls[cl_idx])) != 0) 1666 goto error; 1667 1668 cl_idx++; 1669 } 1670 assert(cl_idx == nvl_len); 1671 1672 /* 1673 * Execute the corresponding ioctl() to set this list of properties. 1674 */ 1675 (void) strlcpy(zc.zc_name, zhp->zfs_name, sizeof (zc.zc_name)); 1676 1677 if ((ret = zcmd_write_src_nvlist(hdl, &zc, nvl)) != 0 || 1678 (ret = zcmd_alloc_dst_nvlist(hdl, &zc, 0)) != 0) 1679 goto error; 1680 1681 ret = zfs_ioctl(hdl, ZFS_IOC_SET_PROP, &zc); 1682 1683 if (ret != 0) { 1684 /* Get the list of unset properties back and report them. */ 1685 nvlist_t *errorprops = NULL; 1686 if (zcmd_read_dst_nvlist(hdl, &zc, &errorprops) != 0) 1687 goto error; 1688 for (nvpair_t *elem = nvlist_next_nvpair(nvl, NULL); 1689 elem != NULL; 1690 elem = nvlist_next_nvpair(nvl, elem)) { 1691 zfs_prop_t prop = zfs_name_to_prop(nvpair_name(elem)); 1692 zfs_setprop_error(hdl, prop, errno, errbuf); 1693 } 1694 nvlist_free(errorprops); 1695 1696 if (added_resv && errno == ENOSPC) { 1697 /* clean up the volsize property we tried to set */ 1698 uint64_t old_volsize = zfs_prop_get_int(zhp, 1699 ZFS_PROP_VOLSIZE); 1700 nvlist_free(nvl); 1701 nvl = NULL; 1702 zcmd_free_nvlists(&zc); 1703 1704 if (nvlist_alloc(&nvl, NV_UNIQUE_NAME, 0) != 0) 1705 goto error; 1706 if (nvlist_add_uint64(nvl, 1707 zfs_prop_to_name(ZFS_PROP_VOLSIZE), 1708 old_volsize) != 0) 1709 goto error; 1710 if (zcmd_write_src_nvlist(hdl, &zc, nvl) != 0) 1711 goto error; 1712 (void) zfs_ioctl(hdl, ZFS_IOC_SET_PROP, &zc); 1713 } 1714 } else { 1715 for (cl_idx = 0; cl_idx < nvl_len; cl_idx++) { 1716 if (cls[cl_idx] != NULL) { 1717 int clp_err = changelist_postfix(cls[cl_idx]); 1718 if (clp_err != 0) 1719 ret = clp_err; 1720 } 1721 } 1722 1723 /* 1724 * Refresh the statistics so the new property value 1725 * is reflected. 1726 */ 1727 if (ret == 0) 1728 (void) get_stats(zhp); 1729 } 1730 1731error: 1732 nvlist_free(nvl); 1733 zcmd_free_nvlists(&zc); 1734 if (cls != NULL) { 1735 for (cl_idx = 0; cl_idx < nvl_len; cl_idx++) { 1736 if (cls[cl_idx] != NULL) 1737 changelist_free(cls[cl_idx]); 1738 } 1739 free(cls); 1740 } 1741 return (ret); 1742} 1743 1744/* 1745 * Given a property, inherit the value from the parent dataset, or if received 1746 * is TRUE, revert to the received value, if any. 1747 */ 1748int 1749zfs_prop_inherit(zfs_handle_t *zhp, const char *propname, boolean_t received) 1750{ 1751 zfs_cmd_t zc = { 0 }; 1752 int ret; 1753 prop_changelist_t *cl; 1754 libzfs_handle_t *hdl = zhp->zfs_hdl; 1755 char errbuf[1024]; 1756 zfs_prop_t prop; 1757 1758 (void) snprintf(errbuf, sizeof (errbuf), dgettext(TEXT_DOMAIN, 1759 "cannot inherit %s for '%s'"), propname, zhp->zfs_name); 1760 1761 zc.zc_cookie = received; 1762 if ((prop = zfs_name_to_prop(propname)) == ZPROP_INVAL) { 1763 /* 1764 * For user properties, the amount of work we have to do is very 1765 * small, so just do it here. 1766 */ 1767 if (!zfs_prop_user(propname)) { 1768 zfs_error_aux(hdl, dgettext(TEXT_DOMAIN, 1769 "invalid property")); 1770 return (zfs_error(hdl, EZFS_BADPROP, errbuf)); 1771 } 1772 1773 (void) strlcpy(zc.zc_name, zhp->zfs_name, sizeof (zc.zc_name)); 1774 (void) strlcpy(zc.zc_value, propname, sizeof (zc.zc_value)); 1775 1776 if (zfs_ioctl(zhp->zfs_hdl, ZFS_IOC_INHERIT_PROP, &zc) != 0) 1777 return (zfs_standard_error(hdl, errno, errbuf)); 1778 1779 return (0); 1780 } 1781 1782 /* 1783 * Verify that this property is inheritable. 1784 */ 1785 if (zfs_prop_readonly(prop)) 1786 return (zfs_error(hdl, EZFS_PROPREADONLY, errbuf)); 1787 1788 if (!zfs_prop_inheritable(prop) && !received) 1789 return (zfs_error(hdl, EZFS_PROPNONINHERIT, errbuf)); 1790 1791 /* 1792 * Check to see if the value applies to this type 1793 */ 1794 if (!zfs_prop_valid_for_type(prop, zhp->zfs_type)) 1795 return (zfs_error(hdl, EZFS_PROPTYPE, errbuf)); 1796 1797 /* 1798 * Normalize the name, to get rid of shorthand abbreviations. 1799 */ 1800 propname = zfs_prop_to_name(prop); 1801 (void) strlcpy(zc.zc_name, zhp->zfs_name, sizeof (zc.zc_name)); 1802 (void) strlcpy(zc.zc_value, propname, sizeof (zc.zc_value)); 1803 1804 if (prop == ZFS_PROP_MOUNTPOINT && getzoneid() == GLOBAL_ZONEID && 1805 zfs_prop_get_int(zhp, ZFS_PROP_ZONED)) { 1806 zfs_error_aux(hdl, dgettext(TEXT_DOMAIN, 1807 "dataset is used in a non-global zone")); 1808 return (zfs_error(hdl, EZFS_ZONED, errbuf)); 1809 } 1810 1811 /* 1812 * Determine datasets which will be affected by this change, if any. 1813 */ 1814 if ((cl = changelist_gather(zhp, prop, 0, 0)) == NULL) 1815 return (-1); 1816 1817 if (prop == ZFS_PROP_MOUNTPOINT && changelist_haszonedchild(cl)) { 1818 zfs_error_aux(hdl, dgettext(TEXT_DOMAIN, 1819 "child dataset with inherited mountpoint is used " 1820 "in a non-global zone")); 1821 ret = zfs_error(hdl, EZFS_ZONED, errbuf); 1822 goto error; 1823 } 1824 1825 if ((ret = changelist_prefix(cl)) != 0) 1826 goto error; 1827 1828 if ((ret = zfs_ioctl(zhp->zfs_hdl, ZFS_IOC_INHERIT_PROP, &zc)) != 0) { 1829 return (zfs_standard_error(hdl, errno, errbuf)); 1830 } else { 1831 1832 if ((ret = changelist_postfix(cl)) != 0) 1833 goto error; 1834 1835 /* 1836 * Refresh the statistics so the new property is reflected. 1837 */ 1838 (void) get_stats(zhp); 1839 } 1840 1841error: 1842 changelist_free(cl); 1843 return (ret); 1844} 1845 1846/* 1847 * True DSL properties are stored in an nvlist. The following two functions 1848 * extract them appropriately. 1849 */ 1850static uint64_t 1851getprop_uint64(zfs_handle_t *zhp, zfs_prop_t prop, char **source) 1852{ 1853 nvlist_t *nv; 1854 uint64_t value; 1855 1856 *source = NULL; 1857 if (nvlist_lookup_nvlist(zhp->zfs_props, 1858 zfs_prop_to_name(prop), &nv) == 0) { 1859 verify(nvlist_lookup_uint64(nv, ZPROP_VALUE, &value) == 0); 1860 (void) nvlist_lookup_string(nv, ZPROP_SOURCE, source); 1861 } else { 1862 verify(!zhp->zfs_props_table || 1863 zhp->zfs_props_table[prop] == B_TRUE); 1864 value = zfs_prop_default_numeric(prop); 1865 *source = ""; 1866 } 1867 1868 return (value); 1869} 1870 1871static const char * 1872getprop_string(zfs_handle_t *zhp, zfs_prop_t prop, char **source) 1873{ 1874 nvlist_t *nv; 1875 const char *value; 1876 1877 *source = NULL; 1878 if (nvlist_lookup_nvlist(zhp->zfs_props, 1879 zfs_prop_to_name(prop), &nv) == 0) { 1880 value = fnvlist_lookup_string(nv, ZPROP_VALUE); 1881 (void) nvlist_lookup_string(nv, ZPROP_SOURCE, source); 1882 } else { 1883 verify(!zhp->zfs_props_table || 1884 zhp->zfs_props_table[prop] == B_TRUE); 1885 value = zfs_prop_default_string(prop); 1886 *source = ""; 1887 } 1888 1889 return (value); 1890} 1891 1892static boolean_t 1893zfs_is_recvd_props_mode(zfs_handle_t *zhp) 1894{ 1895 return (zhp->zfs_props == zhp->zfs_recvd_props); 1896} 1897 1898static void 1899zfs_set_recvd_props_mode(zfs_handle_t *zhp, uint64_t *cookie) 1900{ 1901 *cookie = (uint64_t)(uintptr_t)zhp->zfs_props; 1902 zhp->zfs_props = zhp->zfs_recvd_props; 1903} 1904 1905static void 1906zfs_unset_recvd_props_mode(zfs_handle_t *zhp, uint64_t *cookie) 1907{ 1908 zhp->zfs_props = (nvlist_t *)(uintptr_t)*cookie; 1909 *cookie = 0; 1910} 1911 1912/* 1913 * Internal function for getting a numeric property. Both zfs_prop_get() and 1914 * zfs_prop_get_int() are built using this interface. 1915 * 1916 * Certain properties can be overridden using 'mount -o'. In this case, scan 1917 * the contents of the /etc/mnttab entry, searching for the appropriate options. 1918 * If they differ from the on-disk values, report the current values and mark 1919 * the source "temporary". 1920 */ 1921static int 1922get_numeric_property(zfs_handle_t *zhp, zfs_prop_t prop, zprop_source_t *src, 1923 char **source, uint64_t *val) 1924{ 1925 zfs_cmd_t zc = { 0 }; 1926 nvlist_t *zplprops = NULL; 1927 struct mnttab mnt; 1928 char *mntopt_on = NULL; 1929 char *mntopt_off = NULL; 1930 boolean_t received = zfs_is_recvd_props_mode(zhp); 1931 1932 *source = NULL; 1933 1934 switch (prop) { 1935 case ZFS_PROP_ATIME: 1936 mntopt_on = MNTOPT_ATIME; 1937 mntopt_off = MNTOPT_NOATIME; 1938 break; 1939 1940 case ZFS_PROP_DEVICES: 1941 mntopt_on = MNTOPT_DEVICES; 1942 mntopt_off = MNTOPT_NODEVICES; 1943 break; 1944 1945 case ZFS_PROP_EXEC: 1946 mntopt_on = MNTOPT_EXEC; 1947 mntopt_off = MNTOPT_NOEXEC; 1948 break; 1949 1950 case ZFS_PROP_READONLY: 1951 mntopt_on = MNTOPT_RO; 1952 mntopt_off = MNTOPT_RW; 1953 break; 1954 1955 case ZFS_PROP_SETUID: 1956 mntopt_on = MNTOPT_SETUID; 1957 mntopt_off = MNTOPT_NOSETUID; 1958 break; 1959 1960 case ZFS_PROP_XATTR: 1961 mntopt_on = MNTOPT_XATTR; 1962 mntopt_off = MNTOPT_NOXATTR; 1963 break; 1964 1965 case ZFS_PROP_NBMAND: 1966 mntopt_on = MNTOPT_NBMAND; 1967 mntopt_off = MNTOPT_NONBMAND; 1968 break; 1969 } 1970 1971 /* 1972 * Because looking up the mount options is potentially expensive 1973 * (iterating over all of /etc/mnttab), we defer its calculation until 1974 * we're looking up a property which requires its presence. 1975 */ 1976 if (!zhp->zfs_mntcheck && 1977 (mntopt_on != NULL || prop == ZFS_PROP_MOUNTED)) { 1978 libzfs_handle_t *hdl = zhp->zfs_hdl; 1979 struct mnttab entry; 1980 1981 if (libzfs_mnttab_find(hdl, zhp->zfs_name, &entry) == 0) { 1982 zhp->zfs_mntopts = zfs_strdup(hdl, 1983 entry.mnt_mntopts); 1984 if (zhp->zfs_mntopts == NULL) 1985 return (-1); 1986 } 1987 1988 zhp->zfs_mntcheck = B_TRUE; 1989 } 1990 1991 if (zhp->zfs_mntopts == NULL) 1992 mnt.mnt_mntopts = ""; 1993 else 1994 mnt.mnt_mntopts = zhp->zfs_mntopts; 1995 1996 switch (prop) { 1997 case ZFS_PROP_ATIME: 1998 case ZFS_PROP_DEVICES: 1999 case ZFS_PROP_EXEC: 2000 case ZFS_PROP_READONLY: 2001 case ZFS_PROP_SETUID: 2002 case ZFS_PROP_XATTR: 2003 case ZFS_PROP_NBMAND: 2004 *val = getprop_uint64(zhp, prop, source); 2005 2006 if (received) 2007 break; 2008 2009 if (hasmntopt(&mnt, mntopt_on) && !*val) { 2010 *val = B_TRUE; 2011 if (src) 2012 *src = ZPROP_SRC_TEMPORARY; 2013 } else if (hasmntopt(&mnt, mntopt_off) && *val) { 2014 *val = B_FALSE; 2015 if (src) 2016 *src = ZPROP_SRC_TEMPORARY; 2017 } 2018 break; 2019 2020 case ZFS_PROP_CANMOUNT: 2021 case ZFS_PROP_VOLSIZE: 2022 case ZFS_PROP_QUOTA: 2023 case ZFS_PROP_REFQUOTA: 2024 case ZFS_PROP_RESERVATION: 2025 case ZFS_PROP_REFRESERVATION: 2026 case ZFS_PROP_FILESYSTEM_LIMIT: 2027 case ZFS_PROP_SNAPSHOT_LIMIT: 2028 case ZFS_PROP_FILESYSTEM_COUNT: 2029 case ZFS_PROP_SNAPSHOT_COUNT: 2030 *val = getprop_uint64(zhp, prop, source); 2031 2032 if (*source == NULL) { 2033 /* not default, must be local */ 2034 *source = zhp->zfs_name; 2035 } 2036 break; 2037 2038 case ZFS_PROP_MOUNTED: 2039 *val = (zhp->zfs_mntopts != NULL); 2040 break; 2041 2042 case ZFS_PROP_NUMCLONES: 2043 *val = zhp->zfs_dmustats.dds_num_clones; 2044 break; 2045 2046 case ZFS_PROP_VERSION: 2047 case ZFS_PROP_NORMALIZE: 2048 case ZFS_PROP_UTF8ONLY: 2049 case ZFS_PROP_CASE: 2050 if (!zfs_prop_valid_for_type(prop, zhp->zfs_head_type) || 2051 zcmd_alloc_dst_nvlist(zhp->zfs_hdl, &zc, 0) != 0) 2052 return (-1); 2053 (void) strlcpy(zc.zc_name, zhp->zfs_name, sizeof (zc.zc_name)); 2054 if (zfs_ioctl(zhp->zfs_hdl, ZFS_IOC_OBJSET_ZPLPROPS, &zc)) { 2055 zcmd_free_nvlists(&zc); 2056 return (-1); 2057 } 2058 if (zcmd_read_dst_nvlist(zhp->zfs_hdl, &zc, &zplprops) != 0 || 2059 nvlist_lookup_uint64(zplprops, zfs_prop_to_name(prop), 2060 val) != 0) { 2061 zcmd_free_nvlists(&zc); 2062 return (-1); 2063 } 2064 if (zplprops) 2065 nvlist_free(zplprops); 2066 zcmd_free_nvlists(&zc); 2067 break; 2068 2069 case ZFS_PROP_INCONSISTENT: 2070 *val = zhp->zfs_dmustats.dds_inconsistent; 2071 break; 2072 2073 default: 2074 switch (zfs_prop_get_type(prop)) { 2075 case PROP_TYPE_NUMBER: 2076 case PROP_TYPE_INDEX: 2077 *val = getprop_uint64(zhp, prop, source); 2078 /* 2079 * If we tried to use a default value for a 2080 * readonly property, it means that it was not 2081 * present. 2082 */ 2083 if (zfs_prop_readonly(prop) && 2084 *source != NULL && (*source)[0] == '\0') { 2085 *source = NULL; 2086 } 2087 break; 2088 2089 case PROP_TYPE_STRING: 2090 default: 2091 zfs_error_aux(zhp->zfs_hdl, dgettext(TEXT_DOMAIN, 2092 "cannot get non-numeric property")); 2093 return (zfs_error(zhp->zfs_hdl, EZFS_BADPROP, 2094 dgettext(TEXT_DOMAIN, "internal error"))); 2095 } 2096 } 2097 2098 return (0); 2099} 2100 2101/* 2102 * Calculate the source type, given the raw source string. 2103 */ 2104static void 2105get_source(zfs_handle_t *zhp, zprop_source_t *srctype, char *source, 2106 char *statbuf, size_t statlen) 2107{ 2108 if (statbuf == NULL || *srctype == ZPROP_SRC_TEMPORARY) 2109 return; 2110 2111 if (source == NULL) { 2112 *srctype = ZPROP_SRC_NONE; 2113 } else if (source[0] == '\0') { 2114 *srctype = ZPROP_SRC_DEFAULT; 2115 } else if (strstr(source, ZPROP_SOURCE_VAL_RECVD) != NULL) { 2116 *srctype = ZPROP_SRC_RECEIVED; 2117 } else { 2118 if (strcmp(source, zhp->zfs_name) == 0) { 2119 *srctype = ZPROP_SRC_LOCAL; 2120 } else { 2121 (void) strlcpy(statbuf, source, statlen); 2122 *srctype = ZPROP_SRC_INHERITED; 2123 } 2124 } 2125 2126} 2127 2128int 2129zfs_prop_get_recvd(zfs_handle_t *zhp, const char *propname, char *propbuf, 2130 size_t proplen, boolean_t literal) 2131{ 2132 zfs_prop_t prop; 2133 int err = 0; 2134 2135 if (zhp->zfs_recvd_props == NULL) 2136 if (get_recvd_props_ioctl(zhp) != 0) 2137 return (-1); 2138 2139 prop = zfs_name_to_prop(propname); 2140 2141 if (prop != ZPROP_INVAL) { 2142 uint64_t cookie; 2143 if (!nvlist_exists(zhp->zfs_recvd_props, propname)) 2144 return (-1); 2145 zfs_set_recvd_props_mode(zhp, &cookie); 2146 err = zfs_prop_get(zhp, prop, propbuf, proplen, 2147 NULL, NULL, 0, literal); 2148 zfs_unset_recvd_props_mode(zhp, &cookie); 2149 } else { 2150 nvlist_t *propval; 2151 char *recvdval; 2152 if (nvlist_lookup_nvlist(zhp->zfs_recvd_props, 2153 propname, &propval) != 0) 2154 return (-1); 2155 verify(nvlist_lookup_string(propval, ZPROP_VALUE, 2156 &recvdval) == 0); 2157 (void) strlcpy(propbuf, recvdval, proplen); 2158 } 2159 2160 return (err == 0 ? 0 : -1); 2161} 2162 2163static int 2164get_clones_string(zfs_handle_t *zhp, char *propbuf, size_t proplen) 2165{ 2166 nvlist_t *value; 2167 nvpair_t *pair; 2168 2169 value = zfs_get_clones_nvl(zhp); 2170 if (value == NULL) 2171 return (-1); 2172 2173 propbuf[0] = '\0'; 2174 for (pair = nvlist_next_nvpair(value, NULL); pair != NULL; 2175 pair = nvlist_next_nvpair(value, pair)) { 2176 if (propbuf[0] != '\0') 2177 (void) strlcat(propbuf, ",", proplen); 2178 (void) strlcat(propbuf, nvpair_name(pair), proplen); 2179 } 2180 2181 return (0); 2182} 2183 2184struct get_clones_arg { 2185 uint64_t numclones; 2186 nvlist_t *value; 2187 const char *origin; 2188 char buf[ZFS_MAXNAMELEN]; 2189}; 2190 2191int 2192get_clones_cb(zfs_handle_t *zhp, void *arg) 2193{ 2194 struct get_clones_arg *gca = arg; 2195 2196 if (gca->numclones == 0) { 2197 zfs_close(zhp); 2198 return (0); 2199 } 2200 2201 if (zfs_prop_get(zhp, ZFS_PROP_ORIGIN, gca->buf, sizeof (gca->buf), 2202 NULL, NULL, 0, B_TRUE) != 0) 2203 goto out; 2204 if (strcmp(gca->buf, gca->origin) == 0) { 2205 fnvlist_add_boolean(gca->value, zfs_get_name(zhp)); 2206 gca->numclones--; 2207 } 2208 2209out: 2210 (void) zfs_iter_children(zhp, get_clones_cb, gca); 2211 zfs_close(zhp); 2212 return (0); 2213} 2214 2215nvlist_t * 2216zfs_get_clones_nvl(zfs_handle_t *zhp) 2217{ 2218 nvlist_t *nv, *value; 2219 2220 if (nvlist_lookup_nvlist(zhp->zfs_props, 2221 zfs_prop_to_name(ZFS_PROP_CLONES), &nv) != 0) { 2222 struct get_clones_arg gca; 2223 2224 /* 2225 * if this is a snapshot, then the kernel wasn't able 2226 * to get the clones. Do it by slowly iterating. 2227 */ 2228 if (zhp->zfs_type != ZFS_TYPE_SNAPSHOT) 2229 return (NULL); 2230 if (nvlist_alloc(&nv, NV_UNIQUE_NAME, 0) != 0) 2231 return (NULL); 2232 if (nvlist_alloc(&value, NV_UNIQUE_NAME, 0) != 0) { 2233 nvlist_free(nv); 2234 return (NULL); 2235 } 2236 2237 gca.numclones = zfs_prop_get_int(zhp, ZFS_PROP_NUMCLONES); 2238 gca.value = value; 2239 gca.origin = zhp->zfs_name; 2240 2241 if (gca.numclones != 0) { 2242 zfs_handle_t *root; 2243 char pool[ZFS_MAXNAMELEN]; 2244 char *cp = pool; 2245 2246 /* get the pool name */ 2247 (void) strlcpy(pool, zhp->zfs_name, sizeof (pool)); 2248 (void) strsep(&cp, "/@"); 2249 root = zfs_open(zhp->zfs_hdl, pool, 2250 ZFS_TYPE_FILESYSTEM); 2251 2252 (void) get_clones_cb(root, &gca); 2253 } 2254 2255 if (gca.numclones != 0 || 2256 nvlist_add_nvlist(nv, ZPROP_VALUE, value) != 0 || 2257 nvlist_add_nvlist(zhp->zfs_props, 2258 zfs_prop_to_name(ZFS_PROP_CLONES), nv) != 0) { 2259 nvlist_free(nv); 2260 nvlist_free(value); 2261 return (NULL); 2262 } 2263 nvlist_free(nv); 2264 nvlist_free(value); 2265 verify(0 == nvlist_lookup_nvlist(zhp->zfs_props, 2266 zfs_prop_to_name(ZFS_PROP_CLONES), &nv)); 2267 } 2268 2269 verify(nvlist_lookup_nvlist(nv, ZPROP_VALUE, &value) == 0); 2270 2271 return (value); 2272} 2273 2274/* 2275 * Retrieve a property from the given object. If 'literal' is specified, then 2276 * numbers are left as exact values. Otherwise, numbers are converted to a 2277 * human-readable form. 2278 * 2279 * Returns 0 on success, or -1 on error. 2280 */ 2281int 2282zfs_prop_get(zfs_handle_t *zhp, zfs_prop_t prop, char *propbuf, size_t proplen, 2283 zprop_source_t *src, char *statbuf, size_t statlen, boolean_t literal) 2284{ 2285 char *source = NULL; 2286 uint64_t val; 2287 const char *str; 2288 const char *strval; 2289 boolean_t received = zfs_is_recvd_props_mode(zhp); 2290 2291 /* 2292 * Check to see if this property applies to our object 2293 */ 2294 if (!zfs_prop_valid_for_type(prop, zhp->zfs_type)) 2295 return (-1); 2296 2297 if (received && zfs_prop_readonly(prop)) 2298 return (-1); 2299 2300 if (src) 2301 *src = ZPROP_SRC_NONE; 2302 2303 switch (prop) { 2304 case ZFS_PROP_CREATION: 2305 /* 2306 * 'creation' is a time_t stored in the statistics. We convert 2307 * this into a string unless 'literal' is specified. 2308 */ 2309 { 2310 val = getprop_uint64(zhp, prop, &source); 2311 time_t time = (time_t)val; 2312 struct tm t; 2313 2314 if (literal || 2315 localtime_r(&time, &t) == NULL || 2316 strftime(propbuf, proplen, "%a %b %e %k:%M %Y", 2317 &t) == 0) 2318 (void) snprintf(propbuf, proplen, "%llu", val); 2319 } 2320 break; 2321 2322 case ZFS_PROP_MOUNTPOINT: 2323 /* 2324 * Getting the precise mountpoint can be tricky. 2325 * 2326 * - for 'none' or 'legacy', return those values. 2327 * - for inherited mountpoints, we want to take everything 2328 * after our ancestor and append it to the inherited value. 2329 * 2330 * If the pool has an alternate root, we want to prepend that 2331 * root to any values we return. 2332 */ 2333 2334 str = getprop_string(zhp, prop, &source); 2335 2336 if (str[0] == '/') { 2337 char buf[MAXPATHLEN]; 2338 char *root = buf; 2339 const char *relpath; 2340 2341 /* 2342 * If we inherit the mountpoint, even from a dataset 2343 * with a received value, the source will be the path of 2344 * the dataset we inherit from. If source is 2345 * ZPROP_SOURCE_VAL_RECVD, the received value is not 2346 * inherited. 2347 */ 2348 if (strcmp(source, ZPROP_SOURCE_VAL_RECVD) == 0) { 2349 relpath = ""; 2350 } else { 2351 relpath = zhp->zfs_name + strlen(source); 2352 if (relpath[0] == '/') 2353 relpath++; 2354 } 2355 2356 if ((zpool_get_prop(zhp->zpool_hdl, 2357 ZPOOL_PROP_ALTROOT, buf, MAXPATHLEN, NULL, 2358 B_FALSE)) || (strcmp(root, "-") == 0)) 2359 root[0] = '\0'; 2360 /* 2361 * Special case an alternate root of '/'. This will 2362 * avoid having multiple leading slashes in the 2363 * mountpoint path. 2364 */ 2365 if (strcmp(root, "/") == 0) 2366 root++; 2367 2368 /* 2369 * If the mountpoint is '/' then skip over this 2370 * if we are obtaining either an alternate root or 2371 * an inherited mountpoint. 2372 */ 2373 if (str[1] == '\0' && (root[0] != '\0' || 2374 relpath[0] != '\0')) 2375 str++; 2376 2377 if (relpath[0] == '\0') 2378 (void) snprintf(propbuf, proplen, "%s%s", 2379 root, str); 2380 else 2381 (void) snprintf(propbuf, proplen, "%s%s%s%s", 2382 root, str, relpath[0] == '@' ? "" : "/", 2383 relpath); 2384 } else { 2385 /* 'legacy' or 'none' */ 2386 (void) strlcpy(propbuf, str, proplen); 2387 } 2388 2389 break; 2390 2391 case ZFS_PROP_ORIGIN: 2392 str = getprop_string(zhp, prop, &source); 2393 if (str == NULL) 2394 return (-1); 2395 (void) strlcpy(propbuf, str, proplen); 2396 break; 2397 2398 case ZFS_PROP_CLONES: 2399 if (get_clones_string(zhp, propbuf, proplen) != 0) 2400 return (-1); 2401 break; 2402 2403 case ZFS_PROP_QUOTA: 2404 case ZFS_PROP_REFQUOTA: 2405 case ZFS_PROP_RESERVATION: 2406 case ZFS_PROP_REFRESERVATION: 2407 2408 if (get_numeric_property(zhp, prop, src, &source, &val) != 0) 2409 return (-1); 2410 2411 /* 2412 * If quota or reservation is 0, we translate this into 'none' 2413 * (unless literal is set), and indicate that it's the default 2414 * value. Otherwise, we print the number nicely and indicate 2415 * that its set locally. 2416 */ 2417 if (val == 0) { 2418 if (literal) 2419 (void) strlcpy(propbuf, "0", proplen); 2420 else 2421 (void) strlcpy(propbuf, "none", proplen); 2422 } else { 2423 if (literal) 2424 (void) snprintf(propbuf, proplen, "%llu", 2425 (u_longlong_t)val); 2426 else 2427 zfs_nicenum(val, propbuf, proplen); 2428 } 2429 break; 2430 2431 case ZFS_PROP_FILESYSTEM_LIMIT: 2432 case ZFS_PROP_SNAPSHOT_LIMIT: 2433 case ZFS_PROP_FILESYSTEM_COUNT: 2434 case ZFS_PROP_SNAPSHOT_COUNT: 2435 2436 if (get_numeric_property(zhp, prop, src, &source, &val) != 0) 2437 return (-1); 2438 2439 /* 2440 * If limit is UINT64_MAX, we translate this into 'none' (unless 2441 * literal is set), and indicate that it's the default value. 2442 * Otherwise, we print the number nicely and indicate that it's 2443 * set locally. 2444 */ 2445 if (literal) { 2446 (void) snprintf(propbuf, proplen, "%llu", 2447 (u_longlong_t)val); 2448 } else if (val == UINT64_MAX) { 2449 (void) strlcpy(propbuf, "none", proplen); 2450 } else { 2451 zfs_nicenum(val, propbuf, proplen); 2452 } 2453 break; 2454 2455 case ZFS_PROP_REFRATIO: 2456 case ZFS_PROP_COMPRESSRATIO: 2457 if (get_numeric_property(zhp, prop, src, &source, &val) != 0) 2458 return (-1); 2459 (void) snprintf(propbuf, proplen, "%llu.%02llux", 2460 (u_longlong_t)(val / 100), 2461 (u_longlong_t)(val % 100)); 2462 break; 2463 2464 case ZFS_PROP_TYPE: 2465 switch (zhp->zfs_type) { 2466 case ZFS_TYPE_FILESYSTEM: 2467 str = "filesystem"; 2468 break; 2469 case ZFS_TYPE_VOLUME: 2470 str = "volume"; 2471 break; 2472 case ZFS_TYPE_SNAPSHOT: 2473 str = "snapshot"; 2474 break; 2475 case ZFS_TYPE_BOOKMARK: 2476 str = "bookmark"; 2477 break; 2478 default: 2479 abort(); 2480 } 2481 (void) snprintf(propbuf, proplen, "%s", str); 2482 break; 2483 2484 case ZFS_PROP_MOUNTED: 2485 /* 2486 * The 'mounted' property is a pseudo-property that described 2487 * whether the filesystem is currently mounted. Even though 2488 * it's a boolean value, the typical values of "on" and "off" 2489 * don't make sense, so we translate to "yes" and "no". 2490 */ 2491 if (get_numeric_property(zhp, ZFS_PROP_MOUNTED, 2492 src, &source, &val) != 0) 2493 return (-1); 2494 if (val) 2495 (void) strlcpy(propbuf, "yes", proplen); 2496 else 2497 (void) strlcpy(propbuf, "no", proplen); 2498 break; 2499 2500 case ZFS_PROP_NAME: 2501 /* 2502 * The 'name' property is a pseudo-property derived from the 2503 * dataset name. It is presented as a real property to simplify 2504 * consumers. 2505 */ 2506 (void) strlcpy(propbuf, zhp->zfs_name, proplen); 2507 break; 2508 2509 case ZFS_PROP_MLSLABEL: 2510 { 2511#ifdef illumos 2512 m_label_t *new_sl = NULL; 2513 char *ascii = NULL; /* human readable label */ 2514 2515 (void) strlcpy(propbuf, 2516 getprop_string(zhp, prop, &source), proplen); 2517 2518 if (literal || (strcasecmp(propbuf, 2519 ZFS_MLSLABEL_DEFAULT) == 0)) 2520 break; 2521 2522 /* 2523 * Try to translate the internal hex string to 2524 * human-readable output. If there are any 2525 * problems just use the hex string. 2526 */ 2527 2528 if (str_to_label(propbuf, &new_sl, MAC_LABEL, 2529 L_NO_CORRECTION, NULL) == -1) { 2530 m_label_free(new_sl); 2531 break; 2532 } 2533 2534 if (label_to_str(new_sl, &ascii, M_LABEL, 2535 DEF_NAMES) != 0) { 2536 if (ascii) 2537 free(ascii); 2538 m_label_free(new_sl); 2539 break; 2540 } 2541 m_label_free(new_sl); 2542 2543 (void) strlcpy(propbuf, ascii, proplen); 2544 free(ascii); 2545#else /* !illumos */ 2546 propbuf[0] = '\0'; 2547#endif /* illumos */ 2548 } 2549 break; 2550 2551 case ZFS_PROP_GUID: 2552 /* 2553 * GUIDs are stored as numbers, but they are identifiers. 2554 * We don't want them to be pretty printed, because pretty 2555 * printing mangles the ID into a truncated and useless value. 2556 */ 2557 if (get_numeric_property(zhp, prop, src, &source, &val) != 0) 2558 return (-1); 2559 (void) snprintf(propbuf, proplen, "%llu", (u_longlong_t)val); 2560 break; 2561 2562 default: 2563 switch (zfs_prop_get_type(prop)) { 2564 case PROP_TYPE_NUMBER: 2565 if (get_numeric_property(zhp, prop, src, 2566 &source, &val) != 0) 2567 return (-1); 2568 if (literal) 2569 (void) snprintf(propbuf, proplen, "%llu", 2570 (u_longlong_t)val); 2571 else 2572 zfs_nicenum(val, propbuf, proplen); 2573 break; 2574 2575 case PROP_TYPE_STRING: 2576 str = getprop_string(zhp, prop, &source); 2577 if (str == NULL) 2578 return (-1); 2579 (void) strlcpy(propbuf, str, proplen); 2580 break; 2581 2582 case PROP_TYPE_INDEX: 2583 if (get_numeric_property(zhp, prop, src, 2584 &source, &val) != 0) 2585 return (-1); 2586 if (zfs_prop_index_to_string(prop, val, &strval) != 0) 2587 return (-1); 2588 (void) strlcpy(propbuf, strval, proplen); 2589 break; 2590 2591 default: 2592 abort(); 2593 } 2594 } 2595 2596 get_source(zhp, src, source, statbuf, statlen); 2597 2598 return (0); 2599} 2600 2601/* 2602 * Utility function to get the given numeric property. Does no validation that 2603 * the given property is the appropriate type; should only be used with 2604 * hard-coded property types. 2605 */ 2606uint64_t 2607zfs_prop_get_int(zfs_handle_t *zhp, zfs_prop_t prop) 2608{ 2609 char *source; 2610 uint64_t val; 2611 2612 (void) get_numeric_property(zhp, prop, NULL, &source, &val); 2613 2614 return (val); 2615} 2616 2617int 2618zfs_prop_set_int(zfs_handle_t *zhp, zfs_prop_t prop, uint64_t val) 2619{ 2620 char buf[64]; 2621 2622 (void) snprintf(buf, sizeof (buf), "%llu", (longlong_t)val); 2623 return (zfs_prop_set(zhp, zfs_prop_to_name(prop), buf)); 2624} 2625 2626/* 2627 * Similar to zfs_prop_get(), but returns the value as an integer. 2628 */ 2629int 2630zfs_prop_get_numeric(zfs_handle_t *zhp, zfs_prop_t prop, uint64_t *value, 2631 zprop_source_t *src, char *statbuf, size_t statlen) 2632{ 2633 char *source; 2634 2635 /* 2636 * Check to see if this property applies to our object 2637 */ 2638 if (!zfs_prop_valid_for_type(prop, zhp->zfs_type)) { 2639 return (zfs_error_fmt(zhp->zfs_hdl, EZFS_PROPTYPE, 2640 dgettext(TEXT_DOMAIN, "cannot get property '%s'"), 2641 zfs_prop_to_name(prop))); 2642 } 2643 2644 if (src) 2645 *src = ZPROP_SRC_NONE; 2646 2647 if (get_numeric_property(zhp, prop, src, &source, value) != 0) 2648 return (-1); 2649 2650 get_source(zhp, src, source, statbuf, statlen); 2651 2652 return (0); 2653} 2654 2655static int 2656idmap_id_to_numeric_domain_rid(uid_t id, boolean_t isuser, 2657 char **domainp, idmap_rid_t *ridp) 2658{ 2659#ifdef illumos 2660 idmap_get_handle_t *get_hdl = NULL; 2661 idmap_stat status; 2662 int err = EINVAL; 2663 2664 if (idmap_get_create(&get_hdl) != IDMAP_SUCCESS) 2665 goto out; 2666 2667 if (isuser) { 2668 err = idmap_get_sidbyuid(get_hdl, id, 2669 IDMAP_REQ_FLG_USE_CACHE, domainp, ridp, &status); 2670 } else { 2671 err = idmap_get_sidbygid(get_hdl, id, 2672 IDMAP_REQ_FLG_USE_CACHE, domainp, ridp, &status); 2673 } 2674 if (err == IDMAP_SUCCESS && 2675 idmap_get_mappings(get_hdl) == IDMAP_SUCCESS && 2676 status == IDMAP_SUCCESS) 2677 err = 0; 2678 else 2679 err = EINVAL; 2680out: 2681 if (get_hdl) 2682 idmap_get_destroy(get_hdl); 2683 return (err); 2684#else /* !illumos */ 2685 assert(!"invalid code path"); 2686 return (EINVAL); // silence compiler warning 2687#endif /* illumos */ 2688} 2689 2690/* 2691 * convert the propname into parameters needed by kernel 2692 * Eg: userquota@ahrens -> ZFS_PROP_USERQUOTA, "", 126829 2693 * Eg: userused@matt@domain -> ZFS_PROP_USERUSED, "S-1-123-456", 789 2694 */ 2695static int 2696userquota_propname_decode(const char *propname, boolean_t zoned, 2697 zfs_userquota_prop_t *typep, char *domain, int domainlen, uint64_t *ridp) 2698{ 2699 zfs_userquota_prop_t type; 2700 char *cp, *end; 2701 char *numericsid = NULL; 2702 boolean_t isuser; 2703 2704 domain[0] = '\0'; 2705 *ridp = 0; 2706 /* Figure out the property type ({user|group}{quota|space}) */ 2707 for (type = 0; type < ZFS_NUM_USERQUOTA_PROPS; type++) { 2708 if (strncmp(propname, zfs_userquota_prop_prefixes[type], 2709 strlen(zfs_userquota_prop_prefixes[type])) == 0) 2710 break; 2711 } 2712 if (type == ZFS_NUM_USERQUOTA_PROPS) 2713 return (EINVAL); 2714 *typep = type; 2715 2716 isuser = (type == ZFS_PROP_USERQUOTA || 2717 type == ZFS_PROP_USERUSED); 2718 2719 cp = strchr(propname, '@') + 1; 2720 2721 if (strchr(cp, '@')) { 2722#ifdef illumos 2723 /* 2724 * It's a SID name (eg "user@domain") that needs to be 2725 * turned into S-1-domainID-RID. 2726 */ 2727 int flag = 0; 2728 idmap_stat stat, map_stat; 2729 uid_t pid; 2730 idmap_rid_t rid; 2731 idmap_get_handle_t *gh = NULL; 2732 2733 stat = idmap_get_create(&gh); 2734 if (stat != IDMAP_SUCCESS) { 2735 idmap_get_destroy(gh); 2736 return (ENOMEM); 2737 } 2738 if (zoned && getzoneid() == GLOBAL_ZONEID) 2739 return (ENOENT); 2740 if (isuser) { 2741 stat = idmap_getuidbywinname(cp, NULL, flag, &pid); 2742 if (stat < 0) 2743 return (ENOENT); 2744 stat = idmap_get_sidbyuid(gh, pid, flag, &numericsid, 2745 &rid, &map_stat); 2746 } else { 2747 stat = idmap_getgidbywinname(cp, NULL, flag, &pid); 2748 if (stat < 0) 2749 return (ENOENT); 2750 stat = idmap_get_sidbygid(gh, pid, flag, &numericsid, 2751 &rid, &map_stat); 2752 } 2753 if (stat < 0) { 2754 idmap_get_destroy(gh); 2755 return (ENOENT); 2756 } 2757 stat = idmap_get_mappings(gh); 2758 idmap_get_destroy(gh); 2759 2760 if (stat < 0) { 2761 return (ENOENT); 2762 } 2763 if (numericsid == NULL) 2764 return (ENOENT); 2765 cp = numericsid; 2766 *ridp = rid; 2767 /* will be further decoded below */ 2768#else /* !illumos */ 2769 return (ENOENT); 2770#endif /* illumos */ 2771 } 2772 2773 if (strncmp(cp, "S-1-", 4) == 0) { 2774 /* It's a numeric SID (eg "S-1-234-567-89") */ 2775 (void) strlcpy(domain, cp, domainlen); 2776 errno = 0; 2777 if (*ridp == 0) { 2778 cp = strrchr(domain, '-'); 2779 *cp = '\0'; 2780 cp++; 2781 *ridp = strtoull(cp, &end, 10); 2782 } else { 2783 end = ""; 2784 } 2785 if (numericsid) { 2786 free(numericsid); 2787 numericsid = NULL; 2788 } 2789 if (errno != 0 || *end != '\0') 2790 return (EINVAL); 2791 } else if (!isdigit(*cp)) { 2792 /* 2793 * It's a user/group name (eg "user") that needs to be 2794 * turned into a uid/gid 2795 */ 2796 if (zoned && getzoneid() == GLOBAL_ZONEID) 2797 return (ENOENT); 2798 if (isuser) { 2799 struct passwd *pw; 2800 pw = getpwnam(cp); 2801 if (pw == NULL) 2802 return (ENOENT); 2803 *ridp = pw->pw_uid; 2804 } else { 2805 struct group *gr; 2806 gr = getgrnam(cp); 2807 if (gr == NULL) 2808 return (ENOENT); 2809 *ridp = gr->gr_gid; 2810 } 2811 } else { 2812 /* It's a user/group ID (eg "12345"). */ 2813 uid_t id = strtoul(cp, &end, 10); 2814 idmap_rid_t rid; 2815 char *mapdomain; 2816 2817 if (*end != '\0') 2818 return (EINVAL); 2819 if (id > MAXUID) { 2820 /* It's an ephemeral ID. */ 2821 if (idmap_id_to_numeric_domain_rid(id, isuser, 2822 &mapdomain, &rid) != 0) 2823 return (ENOENT); 2824 (void) strlcpy(domain, mapdomain, domainlen); 2825 *ridp = rid; 2826 } else { 2827 *ridp = id; 2828 } 2829 } 2830 2831 ASSERT3P(numericsid, ==, NULL); 2832 return (0); 2833} 2834 2835static int 2836zfs_prop_get_userquota_common(zfs_handle_t *zhp, const char *propname, 2837 uint64_t *propvalue, zfs_userquota_prop_t *typep) 2838{ 2839 int err; 2840 zfs_cmd_t zc = { 0 }; 2841 2842 (void) strlcpy(zc.zc_name, zhp->zfs_name, sizeof (zc.zc_name)); 2843 2844 err = userquota_propname_decode(propname, 2845 zfs_prop_get_int(zhp, ZFS_PROP_ZONED), 2846 typep, zc.zc_value, sizeof (zc.zc_value), &zc.zc_guid); 2847 zc.zc_objset_type = *typep; 2848 if (err) 2849 return (err); 2850 2851 err = ioctl(zhp->zfs_hdl->libzfs_fd, ZFS_IOC_USERSPACE_ONE, &zc); 2852 if (err) 2853 return (err); 2854 2855 *propvalue = zc.zc_cookie; 2856 return (0); 2857} 2858 2859int 2860zfs_prop_get_userquota_int(zfs_handle_t *zhp, const char *propname, 2861 uint64_t *propvalue) 2862{ 2863 zfs_userquota_prop_t type; 2864 2865 return (zfs_prop_get_userquota_common(zhp, propname, propvalue, 2866 &type)); 2867} 2868 2869int 2870zfs_prop_get_userquota(zfs_handle_t *zhp, const char *propname, 2871 char *propbuf, int proplen, boolean_t literal) 2872{ 2873 int err; 2874 uint64_t propvalue; 2875 zfs_userquota_prop_t type; 2876 2877 err = zfs_prop_get_userquota_common(zhp, propname, &propvalue, 2878 &type); 2879 2880 if (err) 2881 return (err); 2882 2883 if (literal) { 2884 (void) snprintf(propbuf, proplen, "%llu", propvalue); 2885 } else if (propvalue == 0 && 2886 (type == ZFS_PROP_USERQUOTA || type == ZFS_PROP_GROUPQUOTA)) { 2887 (void) strlcpy(propbuf, "none", proplen); 2888 } else { 2889 zfs_nicenum(propvalue, propbuf, proplen); 2890 } 2891 return (0); 2892} 2893 2894int 2895zfs_prop_get_written_int(zfs_handle_t *zhp, const char *propname, 2896 uint64_t *propvalue) 2897{ 2898 int err; 2899 zfs_cmd_t zc = { 0 }; 2900 const char *snapname; 2901 2902 (void) strlcpy(zc.zc_name, zhp->zfs_name, sizeof (zc.zc_name)); 2903 2904 snapname = strchr(propname, '@') + 1; 2905 if (strchr(snapname, '@')) { 2906 (void) strlcpy(zc.zc_value, snapname, sizeof (zc.zc_value)); 2907 } else { 2908 /* snapname is the short name, append it to zhp's fsname */ 2909 char *cp; 2910 2911 (void) strlcpy(zc.zc_value, zhp->zfs_name, 2912 sizeof (zc.zc_value)); 2913 cp = strchr(zc.zc_value, '@'); 2914 if (cp != NULL) 2915 *cp = '\0'; 2916 (void) strlcat(zc.zc_value, "@", sizeof (zc.zc_value)); 2917 (void) strlcat(zc.zc_value, snapname, sizeof (zc.zc_value)); 2918 } 2919 2920 err = ioctl(zhp->zfs_hdl->libzfs_fd, ZFS_IOC_SPACE_WRITTEN, &zc); 2921 if (err) 2922 return (err); 2923 2924 *propvalue = zc.zc_cookie; 2925 return (0); 2926} 2927 2928int 2929zfs_prop_get_written(zfs_handle_t *zhp, const char *propname, 2930 char *propbuf, int proplen, boolean_t literal) 2931{ 2932 int err; 2933 uint64_t propvalue; 2934 2935 err = zfs_prop_get_written_int(zhp, propname, &propvalue); 2936 2937 if (err) 2938 return (err); 2939 2940 if (literal) { 2941 (void) snprintf(propbuf, proplen, "%llu", propvalue); 2942 } else { 2943 zfs_nicenum(propvalue, propbuf, proplen); 2944 } 2945 return (0); 2946} 2947 2948/* 2949 * Returns the name of the given zfs handle. 2950 */ 2951const char * 2952zfs_get_name(const zfs_handle_t *zhp) 2953{ 2954 return (zhp->zfs_name); 2955} 2956 2957/* 2958 * Returns the type of the given zfs handle. 2959 */ 2960zfs_type_t 2961zfs_get_type(const zfs_handle_t *zhp) 2962{ 2963 return (zhp->zfs_type); 2964} 2965 2966/* 2967 * Is one dataset name a child dataset of another? 2968 * 2969 * Needs to handle these cases: 2970 * Dataset 1 "a/foo" "a/foo" "a/foo" "a/foo" 2971 * Dataset 2 "a/fo" "a/foobar" "a/bar/baz" "a/foo/bar" 2972 * Descendant? No. No. No. Yes. 2973 */ 2974static boolean_t 2975is_descendant(const char *ds1, const char *ds2) 2976{ 2977 size_t d1len = strlen(ds1); 2978 2979 /* ds2 can't be a descendant if it's smaller */ 2980 if (strlen(ds2) < d1len) 2981 return (B_FALSE); 2982 2983 /* otherwise, compare strings and verify that there's a '/' char */ 2984 return (ds2[d1len] == '/' && (strncmp(ds1, ds2, d1len) == 0)); 2985} 2986 2987/* 2988 * Given a complete name, return just the portion that refers to the parent. 2989 * Will return -1 if there is no parent (path is just the name of the 2990 * pool). 2991 */ 2992static int 2993parent_name(const char *path, char *buf, size_t buflen) 2994{ 2995 char *slashp; 2996 2997 (void) strlcpy(buf, path, buflen); 2998 2999 if ((slashp = strrchr(buf, '/')) == NULL) 3000 return (-1); 3001 *slashp = '\0'; 3002 3003 return (0); 3004} 3005 3006/* 3007 * If accept_ancestor is false, then check to make sure that the given path has 3008 * a parent, and that it exists. If accept_ancestor is true, then find the 3009 * closest existing ancestor for the given path. In prefixlen return the 3010 * length of already existing prefix of the given path. We also fetch the 3011 * 'zoned' property, which is used to validate property settings when creating 3012 * new datasets. 3013 */ 3014static int 3015check_parents(libzfs_handle_t *hdl, const char *path, uint64_t *zoned, 3016 boolean_t accept_ancestor, int *prefixlen) 3017{ 3018 zfs_cmd_t zc = { 0 }; 3019 char parent[ZFS_MAXNAMELEN]; 3020 char *slash; 3021 zfs_handle_t *zhp; 3022 char errbuf[1024]; 3023 uint64_t is_zoned; 3024 3025 (void) snprintf(errbuf, sizeof (errbuf), 3026 dgettext(TEXT_DOMAIN, "cannot create '%s'"), path); 3027 3028 /* get parent, and check to see if this is just a pool */ 3029 if (parent_name(path, parent, sizeof (parent)) != 0) { 3030 zfs_error_aux(hdl, dgettext(TEXT_DOMAIN, 3031 "missing dataset name")); 3032 return (zfs_error(hdl, EZFS_INVALIDNAME, errbuf)); 3033 } 3034 3035 /* check to see if the pool exists */ 3036 if ((slash = strchr(parent, '/')) == NULL) 3037 slash = parent + strlen(parent); 3038 (void) strncpy(zc.zc_name, parent, slash - parent); 3039 zc.zc_name[slash - parent] = '\0'; 3040 if (ioctl(hdl->libzfs_fd, ZFS_IOC_OBJSET_STATS, &zc) != 0 && 3041 errno == ENOENT) { 3042 zfs_error_aux(hdl, dgettext(TEXT_DOMAIN, 3043 "no such pool '%s'"), zc.zc_name); 3044 return (zfs_error(hdl, EZFS_NOENT, errbuf)); 3045 } 3046 3047 /* check to see if the parent dataset exists */ 3048 while ((zhp = make_dataset_handle(hdl, parent)) == NULL) { 3049 if (errno == ENOENT && accept_ancestor) { 3050 /* 3051 * Go deeper to find an ancestor, give up on top level. 3052 */ 3053 if (parent_name(parent, parent, sizeof (parent)) != 0) { 3054 zfs_error_aux(hdl, dgettext(TEXT_DOMAIN, 3055 "no such pool '%s'"), zc.zc_name); 3056 return (zfs_error(hdl, EZFS_NOENT, errbuf)); 3057 } 3058 } else if (errno == ENOENT) { 3059 zfs_error_aux(hdl, dgettext(TEXT_DOMAIN, 3060 "parent does not exist")); 3061 return (zfs_error(hdl, EZFS_NOENT, errbuf)); 3062 } else 3063 return (zfs_standard_error(hdl, errno, errbuf)); 3064 } 3065 3066 is_zoned = zfs_prop_get_int(zhp, ZFS_PROP_ZONED); 3067 if (zoned != NULL) 3068 *zoned = is_zoned; 3069 3070 /* we are in a non-global zone, but parent is in the global zone */ 3071 if (getzoneid() != GLOBAL_ZONEID && !is_zoned) { 3072 (void) zfs_standard_error(hdl, EPERM, errbuf); 3073 zfs_close(zhp); 3074 return (-1); 3075 } 3076 3077 /* make sure parent is a filesystem */ 3078 if (zfs_get_type(zhp) != ZFS_TYPE_FILESYSTEM) { 3079 zfs_error_aux(hdl, dgettext(TEXT_DOMAIN, 3080 "parent is not a filesystem")); 3081 (void) zfs_error(hdl, EZFS_BADTYPE, errbuf); 3082 zfs_close(zhp); 3083 return (-1); 3084 } 3085 3086 zfs_close(zhp); 3087 if (prefixlen != NULL) 3088 *prefixlen = strlen(parent); 3089 return (0); 3090} 3091 3092/* 3093 * Finds whether the dataset of the given type(s) exists. 3094 */ 3095boolean_t 3096zfs_dataset_exists(libzfs_handle_t *hdl, const char *path, zfs_type_t types) 3097{ 3098 zfs_handle_t *zhp; 3099 3100 if (!zfs_validate_name(hdl, path, types, B_FALSE)) 3101 return (B_FALSE); 3102 3103 /* 3104 * Try to get stats for the dataset, which will tell us if it exists. 3105 */ 3106 if ((zhp = make_dataset_handle(hdl, path)) != NULL) { 3107 int ds_type = zhp->zfs_type; 3108 3109 zfs_close(zhp); 3110 if (types & ds_type) 3111 return (B_TRUE); 3112 } 3113 return (B_FALSE); 3114} 3115 3116/* 3117 * Given a path to 'target', create all the ancestors between 3118 * the prefixlen portion of the path, and the target itself. 3119 * Fail if the initial prefixlen-ancestor does not already exist. 3120 */ 3121int 3122create_parents(libzfs_handle_t *hdl, char *target, int prefixlen) 3123{ 3124 zfs_handle_t *h; 3125 char *cp; 3126 const char *opname; 3127 3128 /* make sure prefix exists */ 3129 cp = target + prefixlen; 3130 if (*cp != '/') { 3131 assert(strchr(cp, '/') == NULL); 3132 h = zfs_open(hdl, target, ZFS_TYPE_FILESYSTEM); 3133 } else { 3134 *cp = '\0'; 3135 h = zfs_open(hdl, target, ZFS_TYPE_FILESYSTEM); 3136 *cp = '/'; 3137 } 3138 if (h == NULL) 3139 return (-1); 3140 zfs_close(h); 3141 3142 /* 3143 * Attempt to create, mount, and share any ancestor filesystems, 3144 * up to the prefixlen-long one. 3145 */ 3146 for (cp = target + prefixlen + 1; 3147 cp = strchr(cp, '/'); *cp = '/', cp++) { 3148 3149 *cp = '\0'; 3150 3151 h = make_dataset_handle(hdl, target); 3152 if (h) { 3153 /* it already exists, nothing to do here */ 3154 zfs_close(h); 3155 continue; 3156 } 3157 3158 if (zfs_create(hdl, target, ZFS_TYPE_FILESYSTEM, 3159 NULL) != 0) { 3160 opname = dgettext(TEXT_DOMAIN, "create"); 3161 goto ancestorerr; 3162 } 3163 3164 h = zfs_open(hdl, target, ZFS_TYPE_FILESYSTEM); 3165 if (h == NULL) { 3166 opname = dgettext(TEXT_DOMAIN, "open"); 3167 goto ancestorerr; 3168 } 3169 3170 if (zfs_mount(h, NULL, 0) != 0) { 3171 opname = dgettext(TEXT_DOMAIN, "mount"); 3172 goto ancestorerr; 3173 } 3174 3175 if (zfs_share(h) != 0) { 3176 opname = dgettext(TEXT_DOMAIN, "share"); 3177 goto ancestorerr; 3178 } 3179 3180 zfs_close(h); 3181 } 3182 3183 return (0); 3184 3185ancestorerr: 3186 zfs_error_aux(hdl, dgettext(TEXT_DOMAIN, 3187 "failed to %s ancestor '%s'"), opname, target); 3188 return (-1); 3189} 3190 3191/* 3192 * Creates non-existing ancestors of the given path. 3193 */ 3194int 3195zfs_create_ancestors(libzfs_handle_t *hdl, const char *path) 3196{ 3197 int prefix; 3198 char *path_copy; 3199 int rc; 3200 3201 if (check_parents(hdl, path, NULL, B_TRUE, &prefix) != 0) 3202 return (-1); 3203 3204 if ((path_copy = strdup(path)) != NULL) { 3205 rc = create_parents(hdl, path_copy, prefix); 3206 free(path_copy); 3207 } 3208 if (path_copy == NULL || rc != 0) 3209 return (-1); 3210 3211 return (0); 3212} 3213 3214/* 3215 * Create a new filesystem or volume. 3216 */ 3217int 3218zfs_create(libzfs_handle_t *hdl, const char *path, zfs_type_t type, 3219 nvlist_t *props) 3220{ 3221 int ret; 3222 uint64_t size = 0; 3223 uint64_t blocksize = zfs_prop_default_numeric(ZFS_PROP_VOLBLOCKSIZE); 3224 char errbuf[1024]; 3225 uint64_t zoned; 3226 dmu_objset_type_t ost; 3227 3228 (void) snprintf(errbuf, sizeof (errbuf), dgettext(TEXT_DOMAIN, 3229 "cannot create '%s'"), path); 3230 3231 /* validate the path, taking care to note the extended error message */ 3232 if (!zfs_validate_name(hdl, path, type, B_TRUE)) 3233 return (zfs_error(hdl, EZFS_INVALIDNAME, errbuf)); 3234 3235 /* validate parents exist */ 3236 if (check_parents(hdl, path, &zoned, B_FALSE, NULL) != 0) 3237 return (-1); 3238 3239 /* 3240 * The failure modes when creating a dataset of a different type over 3241 * one that already exists is a little strange. In particular, if you 3242 * try to create a dataset on top of an existing dataset, the ioctl() 3243 * will return ENOENT, not EEXIST. To prevent this from happening, we 3244 * first try to see if the dataset exists. 3245 */ 3246 if (zfs_dataset_exists(hdl, path, ZFS_TYPE_DATASET)) { 3247 zfs_error_aux(hdl, dgettext(TEXT_DOMAIN, 3248 "dataset already exists")); 3249 return (zfs_error(hdl, EZFS_EXISTS, errbuf)); 3250 } 3251 3252 if (type == ZFS_TYPE_VOLUME) 3253 ost = DMU_OST_ZVOL; 3254 else 3255 ost = DMU_OST_ZFS; 3256 3257 if (props && (props = zfs_valid_proplist(hdl, type, props, 3258 zoned, NULL, errbuf)) == 0) 3259 return (-1); 3260 3261 if (type == ZFS_TYPE_VOLUME) { 3262 /* 3263 * If we are creating a volume, the size and block size must 3264 * satisfy a few restraints. First, the blocksize must be a 3265 * valid block size between SPA_{MIN,MAX}BLOCKSIZE. Second, the 3266 * volsize must be a multiple of the block size, and cannot be 3267 * zero. 3268 */ 3269 if (props == NULL || nvlist_lookup_uint64(props, 3270 zfs_prop_to_name(ZFS_PROP_VOLSIZE), &size) != 0) { 3271 nvlist_free(props); 3272 zfs_error_aux(hdl, dgettext(TEXT_DOMAIN, 3273 "missing volume size")); 3274 return (zfs_error(hdl, EZFS_BADPROP, errbuf)); 3275 } 3276 3277 if ((ret = nvlist_lookup_uint64(props, 3278 zfs_prop_to_name(ZFS_PROP_VOLBLOCKSIZE), 3279 &blocksize)) != 0) { 3280 if (ret == ENOENT) { 3281 blocksize = zfs_prop_default_numeric( 3282 ZFS_PROP_VOLBLOCKSIZE); 3283 } else { 3284 nvlist_free(props); 3285 zfs_error_aux(hdl, dgettext(TEXT_DOMAIN, 3286 "missing volume block size")); 3287 return (zfs_error(hdl, EZFS_BADPROP, errbuf)); 3288 } 3289 } 3290 3291 if (size == 0) { 3292 nvlist_free(props); 3293 zfs_error_aux(hdl, dgettext(TEXT_DOMAIN, 3294 "volume size cannot be zero")); 3295 return (zfs_error(hdl, EZFS_BADPROP, errbuf)); 3296 } 3297 3298 if (size % blocksize != 0) { 3299 nvlist_free(props); 3300 zfs_error_aux(hdl, dgettext(TEXT_DOMAIN, 3301 "volume size must be a multiple of volume block " 3302 "size")); 3303 return (zfs_error(hdl, EZFS_BADPROP, errbuf)); 3304 } 3305 } 3306 3307 /* create the dataset */ 3308 ret = lzc_create(path, ost, props); 3309 nvlist_free(props); 3310 3311 /* check for failure */ 3312 if (ret != 0) { 3313 char parent[ZFS_MAXNAMELEN]; 3314 (void) parent_name(path, parent, sizeof (parent)); 3315 3316 switch (errno) { 3317 case ENOENT: 3318 zfs_error_aux(hdl, dgettext(TEXT_DOMAIN, 3319 "no such parent '%s'"), parent); 3320 return (zfs_error(hdl, EZFS_NOENT, errbuf)); 3321 3322 case EINVAL: 3323 zfs_error_aux(hdl, dgettext(TEXT_DOMAIN, 3324 "parent '%s' is not a filesystem"), parent); 3325 return (zfs_error(hdl, EZFS_BADTYPE, errbuf)); 3326 3327 case EDOM: 3328 zfs_error_aux(hdl, dgettext(TEXT_DOMAIN, 3329 "volume block size must be power of 2 from " 3330 "512B to 128KB")); 3331 3332 return (zfs_error(hdl, EZFS_BADPROP, errbuf)); 3333 3334 case ENOTSUP: 3335 zfs_error_aux(hdl, dgettext(TEXT_DOMAIN, 3336 "pool must be upgraded to set this " 3337 "property or value")); 3338 return (zfs_error(hdl, EZFS_BADVERSION, errbuf)); 3339#ifdef _ILP32 3340 case EOVERFLOW: 3341 /* 3342 * This platform can't address a volume this big. 3343 */ 3344 if (type == ZFS_TYPE_VOLUME) 3345 return (zfs_error(hdl, EZFS_VOLTOOBIG, 3346 errbuf)); 3347#endif 3348 /* FALLTHROUGH */ 3349 default: 3350 return (zfs_standard_error(hdl, errno, errbuf)); 3351 } 3352 } 3353 3354 return (0); 3355} 3356 3357/* 3358 * Destroys the given dataset. The caller must make sure that the filesystem 3359 * isn't mounted, and that there are no active dependents. If the file system 3360 * does not exist this function does nothing. 3361 */ 3362int 3363zfs_destroy(zfs_handle_t *zhp, boolean_t defer) 3364{ 3365 zfs_cmd_t zc = { 0 }; 3366 3367 if (zhp->zfs_type == ZFS_TYPE_BOOKMARK) { 3368 nvlist_t *nv = fnvlist_alloc(); 3369 fnvlist_add_boolean(nv, zhp->zfs_name); 3370 int error = lzc_destroy_bookmarks(nv, NULL); 3371 fnvlist_free(nv); 3372 if (error != 0) { 3373 return (zfs_standard_error_fmt(zhp->zfs_hdl, errno, 3374 dgettext(TEXT_DOMAIN, "cannot destroy '%s'"), 3375 zhp->zfs_name)); 3376 } 3377 return (0); 3378 } 3379 3380 (void) strlcpy(zc.zc_name, zhp->zfs_name, sizeof (zc.zc_name)); 3381 3382 if (ZFS_IS_VOLUME(zhp)) { 3383 zc.zc_objset_type = DMU_OST_ZVOL; 3384 } else { 3385 zc.zc_objset_type = DMU_OST_ZFS; 3386 } 3387 3388 zc.zc_defer_destroy = defer; 3389 if (zfs_ioctl(zhp->zfs_hdl, ZFS_IOC_DESTROY, &zc) != 0 && 3390 errno != ENOENT) { 3391 return (zfs_standard_error_fmt(zhp->zfs_hdl, errno, 3392 dgettext(TEXT_DOMAIN, "cannot destroy '%s'"), 3393 zhp->zfs_name)); 3394 } 3395 3396 remove_mountpoint(zhp); 3397 3398 return (0); 3399} 3400 3401struct destroydata { 3402 nvlist_t *nvl; 3403 const char *snapname; 3404}; 3405 3406static int 3407zfs_check_snap_cb(zfs_handle_t *zhp, void *arg) 3408{ 3409 struct destroydata *dd = arg; 3410 char name[ZFS_MAXNAMELEN]; 3411 int rv = 0; 3412 3413 (void) snprintf(name, sizeof (name), 3414 "%s@%s", zhp->zfs_name, dd->snapname); 3415 3416 if (lzc_exists(name)) 3417 verify(nvlist_add_boolean(dd->nvl, name) == 0); 3418 3419 rv = zfs_iter_filesystems(zhp, zfs_check_snap_cb, dd); 3420 zfs_close(zhp); 3421 return (rv); 3422} 3423 3424/* 3425 * Destroys all snapshots with the given name in zhp & descendants. 3426 */ 3427int 3428zfs_destroy_snaps(zfs_handle_t *zhp, char *snapname, boolean_t defer) 3429{ 3430 int ret; 3431 struct destroydata dd = { 0 }; 3432 3433 dd.snapname = snapname; 3434 verify(nvlist_alloc(&dd.nvl, NV_UNIQUE_NAME, 0) == 0); 3435 (void) zfs_check_snap_cb(zfs_handle_dup(zhp), &dd); 3436 3437 if (nvlist_empty(dd.nvl)) { 3438 ret = zfs_standard_error_fmt(zhp->zfs_hdl, ENOENT, 3439 dgettext(TEXT_DOMAIN, "cannot destroy '%s@%s'"), 3440 zhp->zfs_name, snapname); 3441 } else { 3442 ret = zfs_destroy_snaps_nvl(zhp->zfs_hdl, dd.nvl, defer); 3443 } 3444 nvlist_free(dd.nvl); 3445 return (ret); 3446} 3447 3448/* 3449 * Destroys all the snapshots named in the nvlist. 3450 */ 3451int 3452zfs_destroy_snaps_nvl(libzfs_handle_t *hdl, nvlist_t *snaps, boolean_t defer) 3453{ 3454 int ret; 3455 nvlist_t *errlist; 3456 3457 ret = lzc_destroy_snaps(snaps, defer, &errlist); 3458 3459 if (ret == 0) 3460 return (0); 3461 3462 if (nvlist_empty(errlist)) { 3463 char errbuf[1024]; 3464 (void) snprintf(errbuf, sizeof (errbuf), 3465 dgettext(TEXT_DOMAIN, "cannot destroy snapshots")); 3466 3467 ret = zfs_standard_error(hdl, ret, errbuf); 3468 } 3469 for (nvpair_t *pair = nvlist_next_nvpair(errlist, NULL); 3470 pair != NULL; pair = nvlist_next_nvpair(errlist, pair)) { 3471 char errbuf[1024]; 3472 (void) snprintf(errbuf, sizeof (errbuf), 3473 dgettext(TEXT_DOMAIN, "cannot destroy snapshot %s"), 3474 nvpair_name(pair)); 3475 3476 switch (fnvpair_value_int32(pair)) { 3477 case EEXIST: 3478 zfs_error_aux(hdl, 3479 dgettext(TEXT_DOMAIN, "snapshot is cloned")); 3480 ret = zfs_error(hdl, EZFS_EXISTS, errbuf); 3481 break; 3482 default: 3483 ret = zfs_standard_error(hdl, errno, errbuf); 3484 break; 3485 } 3486 } 3487 3488 return (ret); 3489} 3490 3491/* 3492 * Clones the given dataset. The target must be of the same type as the source. 3493 */ 3494int 3495zfs_clone(zfs_handle_t *zhp, const char *target, nvlist_t *props) 3496{ 3497 char parent[ZFS_MAXNAMELEN]; 3498 int ret; 3499 char errbuf[1024]; 3500 libzfs_handle_t *hdl = zhp->zfs_hdl; 3501 uint64_t zoned; 3502 3503 assert(zhp->zfs_type == ZFS_TYPE_SNAPSHOT); 3504 3505 (void) snprintf(errbuf, sizeof (errbuf), dgettext(TEXT_DOMAIN, 3506 "cannot create '%s'"), target); 3507 3508 /* validate the target/clone name */ 3509 if (!zfs_validate_name(hdl, target, ZFS_TYPE_FILESYSTEM, B_TRUE)) 3510 return (zfs_error(hdl, EZFS_INVALIDNAME, errbuf)); 3511 3512 /* validate parents exist */ 3513 if (check_parents(hdl, target, &zoned, B_FALSE, NULL) != 0) 3514 return (-1); 3515 3516 (void) parent_name(target, parent, sizeof (parent)); 3517 3518 /* do the clone */ 3519 3520 if (props) { 3521 zfs_type_t type; 3522 if (ZFS_IS_VOLUME(zhp)) { 3523 type = ZFS_TYPE_VOLUME; 3524 } else { 3525 type = ZFS_TYPE_FILESYSTEM; 3526 } 3527 if ((props = zfs_valid_proplist(hdl, type, props, zoned, 3528 zhp, errbuf)) == NULL) 3529 return (-1); 3530 } 3531 3532 ret = lzc_clone(target, zhp->zfs_name, props); 3533 nvlist_free(props); 3534 3535 if (ret != 0) { 3536 switch (errno) { 3537 3538 case ENOENT: 3539 /* 3540 * The parent doesn't exist. We should have caught this 3541 * above, but there may a race condition that has since 3542 * destroyed the parent. 3543 * 3544 * At this point, we don't know whether it's the source 3545 * that doesn't exist anymore, or whether the target 3546 * dataset doesn't exist. 3547 */ 3548 zfs_error_aux(zhp->zfs_hdl, dgettext(TEXT_DOMAIN, 3549 "no such parent '%s'"), parent); 3550 return (zfs_error(zhp->zfs_hdl, EZFS_NOENT, errbuf)); 3551 3552 case EXDEV: 3553 zfs_error_aux(zhp->zfs_hdl, dgettext(TEXT_DOMAIN, 3554 "source and target pools differ")); 3555 return (zfs_error(zhp->zfs_hdl, EZFS_CROSSTARGET, 3556 errbuf)); 3557 3558 default: 3559 return (zfs_standard_error(zhp->zfs_hdl, errno, 3560 errbuf)); 3561 } 3562 } 3563 3564 return (ret); 3565} 3566 3567/* 3568 * Promotes the given clone fs to be the clone parent. 3569 */ 3570int 3571zfs_promote(zfs_handle_t *zhp) 3572{ 3573 libzfs_handle_t *hdl = zhp->zfs_hdl; 3574 zfs_cmd_t zc = { 0 }; 3575 char parent[MAXPATHLEN]; 3576 int ret; 3577 char errbuf[1024]; 3578 3579 (void) snprintf(errbuf, sizeof (errbuf), dgettext(TEXT_DOMAIN, 3580 "cannot promote '%s'"), zhp->zfs_name); 3581 3582 if (zhp->zfs_type == ZFS_TYPE_SNAPSHOT) { 3583 zfs_error_aux(hdl, dgettext(TEXT_DOMAIN, 3584 "snapshots can not be promoted")); 3585 return (zfs_error(hdl, EZFS_BADTYPE, errbuf)); 3586 } 3587 3588 (void) strlcpy(parent, zhp->zfs_dmustats.dds_origin, sizeof (parent)); 3589 if (parent[0] == '\0') { 3590 zfs_error_aux(hdl, dgettext(TEXT_DOMAIN, 3591 "not a cloned filesystem")); 3592 return (zfs_error(hdl, EZFS_BADTYPE, errbuf)); 3593 } 3594 3595 (void) strlcpy(zc.zc_value, zhp->zfs_dmustats.dds_origin, 3596 sizeof (zc.zc_value)); 3597 (void) strlcpy(zc.zc_name, zhp->zfs_name, sizeof (zc.zc_name)); 3598 ret = zfs_ioctl(hdl, ZFS_IOC_PROMOTE, &zc); 3599 3600 if (ret != 0) { 3601 int save_errno = errno; 3602 3603 switch (save_errno) { 3604 case EEXIST: 3605 /* There is a conflicting snapshot name. */ 3606 zfs_error_aux(hdl, dgettext(TEXT_DOMAIN, 3607 "conflicting snapshot '%s' from parent '%s'"), 3608 zc.zc_string, parent); 3609 return (zfs_error(hdl, EZFS_EXISTS, errbuf)); 3610 3611 default: 3612 return (zfs_standard_error(hdl, save_errno, errbuf)); 3613 } 3614 } 3615 return (ret); 3616} 3617 3618typedef struct snapdata { 3619 nvlist_t *sd_nvl; 3620 const char *sd_snapname; 3621} snapdata_t; 3622 3623static int 3624zfs_snapshot_cb(zfs_handle_t *zhp, void *arg) 3625{ 3626 snapdata_t *sd = arg; 3627 char name[ZFS_MAXNAMELEN]; 3628 int rv = 0; 3629 3630 if (zfs_prop_get_int(zhp, ZFS_PROP_INCONSISTENT) == 0) { 3631 (void) snprintf(name, sizeof (name), 3632 "%s@%s", zfs_get_name(zhp), sd->sd_snapname); 3633 3634 fnvlist_add_boolean(sd->sd_nvl, name); 3635 3636 rv = zfs_iter_filesystems(zhp, zfs_snapshot_cb, sd); 3637 } 3638 zfs_close(zhp); 3639 3640 return (rv); 3641} 3642 3643/* 3644 * Creates snapshots. The keys in the snaps nvlist are the snapshots to be 3645 * created. 3646 */ 3647int 3648zfs_snapshot_nvl(libzfs_handle_t *hdl, nvlist_t *snaps, nvlist_t *props) 3649{ 3650 int ret; 3651 char errbuf[1024]; 3652 nvpair_t *elem; 3653 nvlist_t *errors; 3654 3655 (void) snprintf(errbuf, sizeof (errbuf), dgettext(TEXT_DOMAIN, 3656 "cannot create snapshots ")); 3657 3658 elem = NULL; 3659 while ((elem = nvlist_next_nvpair(snaps, elem)) != NULL) { 3660 const char *snapname = nvpair_name(elem); 3661 3662 /* validate the target name */ 3663 if (!zfs_validate_name(hdl, snapname, ZFS_TYPE_SNAPSHOT, 3664 B_TRUE)) { 3665 (void) snprintf(errbuf, sizeof (errbuf), 3666 dgettext(TEXT_DOMAIN, 3667 "cannot create snapshot '%s'"), snapname); 3668 return (zfs_error(hdl, EZFS_INVALIDNAME, errbuf)); 3669 } 3670 } 3671 3672 if (props != NULL && 3673 (props = zfs_valid_proplist(hdl, ZFS_TYPE_SNAPSHOT, 3674 props, B_FALSE, NULL, errbuf)) == NULL) { 3675 return (-1); 3676 } 3677 3678 ret = lzc_snapshot(snaps, props, &errors); 3679 3680 if (ret != 0) { 3681 boolean_t printed = B_FALSE; 3682 for (elem = nvlist_next_nvpair(errors, NULL); 3683 elem != NULL; 3684 elem = nvlist_next_nvpair(errors, elem)) { 3685 (void) snprintf(errbuf, sizeof (errbuf), 3686 dgettext(TEXT_DOMAIN, 3687 "cannot create snapshot '%s'"), nvpair_name(elem)); 3688 (void) zfs_standard_error(hdl, 3689 fnvpair_value_int32(elem), errbuf); 3690 printed = B_TRUE; 3691 } 3692 if (!printed) { 3693 switch (ret) { 3694 case EXDEV: 3695 zfs_error_aux(hdl, dgettext(TEXT_DOMAIN, 3696 "multiple snapshots of same " 3697 "fs not allowed")); 3698 (void) zfs_error(hdl, EZFS_EXISTS, errbuf); 3699 3700 break; 3701 default: 3702 (void) zfs_standard_error(hdl, ret, errbuf); 3703 } 3704 } 3705 } 3706 3707 nvlist_free(props); 3708 nvlist_free(errors); 3709 return (ret); 3710} 3711 3712int 3713zfs_snapshot(libzfs_handle_t *hdl, const char *path, boolean_t recursive, 3714 nvlist_t *props) 3715{ 3716 int ret; 3717 snapdata_t sd = { 0 }; 3718 char fsname[ZFS_MAXNAMELEN]; 3719 char *cp; 3720 zfs_handle_t *zhp; 3721 char errbuf[1024]; 3722 3723 (void) snprintf(errbuf, sizeof (errbuf), dgettext(TEXT_DOMAIN, 3724 "cannot snapshot %s"), path); 3725 3726 if (!zfs_validate_name(hdl, path, ZFS_TYPE_SNAPSHOT, B_TRUE)) 3727 return (zfs_error(hdl, EZFS_INVALIDNAME, errbuf)); 3728 3729 (void) strlcpy(fsname, path, sizeof (fsname)); 3730 cp = strchr(fsname, '@'); 3731 *cp = '\0'; 3732 sd.sd_snapname = cp + 1; 3733 3734 if ((zhp = zfs_open(hdl, fsname, ZFS_TYPE_FILESYSTEM | 3735 ZFS_TYPE_VOLUME)) == NULL) { 3736 return (-1); 3737 } 3738 3739 verify(nvlist_alloc(&sd.sd_nvl, NV_UNIQUE_NAME, 0) == 0); 3740 if (recursive) { 3741 (void) zfs_snapshot_cb(zfs_handle_dup(zhp), &sd); 3742 } else { 3743 fnvlist_add_boolean(sd.sd_nvl, path); 3744 } 3745 3746 ret = zfs_snapshot_nvl(hdl, sd.sd_nvl, props); 3747 nvlist_free(sd.sd_nvl); 3748 zfs_close(zhp); 3749 return (ret); 3750} 3751 3752/* 3753 * Destroy any more recent snapshots. We invoke this callback on any dependents 3754 * of the snapshot first. If the 'cb_dependent' member is non-zero, then this 3755 * is a dependent and we should just destroy it without checking the transaction 3756 * group. 3757 */ 3758typedef struct rollback_data { 3759 const char *cb_target; /* the snapshot */ 3760 uint64_t cb_create; /* creation time reference */ 3761 boolean_t cb_error; 3762 boolean_t cb_force; 3763} rollback_data_t; 3764 3765static int 3766rollback_destroy_dependent(zfs_handle_t *zhp, void *data) 3767{ 3768 rollback_data_t *cbp = data; 3769 prop_changelist_t *clp; 3770 3771 /* We must destroy this clone; first unmount it */ 3772 clp = changelist_gather(zhp, ZFS_PROP_NAME, 0, 3773 cbp->cb_force ? MS_FORCE: 0); 3774 if (clp == NULL || changelist_prefix(clp) != 0) { 3775 cbp->cb_error = B_TRUE; 3776 zfs_close(zhp); 3777 return (0); 3778 } 3779 if (zfs_destroy(zhp, B_FALSE) != 0) 3780 cbp->cb_error = B_TRUE; 3781 else 3782 changelist_remove(clp, zhp->zfs_name); 3783 (void) changelist_postfix(clp); 3784 changelist_free(clp); 3785 3786 zfs_close(zhp); 3787 return (0); 3788} 3789 3790static int 3791rollback_destroy(zfs_handle_t *zhp, void *data) 3792{ 3793 rollback_data_t *cbp = data; 3794 3795 if (zfs_prop_get_int(zhp, ZFS_PROP_CREATETXG) > cbp->cb_create) { 3796 cbp->cb_error |= zfs_iter_dependents(zhp, B_FALSE, 3797 rollback_destroy_dependent, cbp); 3798 3799 cbp->cb_error |= zfs_destroy(zhp, B_FALSE); 3800 } 3801 3802 zfs_close(zhp); 3803 return (0); 3804} 3805 3806/* 3807 * Given a dataset, rollback to a specific snapshot, discarding any 3808 * data changes since then and making it the active dataset. 3809 * 3810 * Any snapshots and bookmarks more recent than the target are 3811 * destroyed, along with their dependents (i.e. clones). 3812 */ 3813int 3814zfs_rollback(zfs_handle_t *zhp, zfs_handle_t *snap, boolean_t force) 3815{ 3816 rollback_data_t cb = { 0 }; 3817 int err; 3818 boolean_t restore_resv = 0; 3819 uint64_t old_volsize, new_volsize; 3820 zfs_prop_t resv_prop; 3821 3822 assert(zhp->zfs_type == ZFS_TYPE_FILESYSTEM || 3823 zhp->zfs_type == ZFS_TYPE_VOLUME); 3824 3825 /* 3826 * Destroy all recent snapshots and their dependents. 3827 */ 3828 cb.cb_force = force; 3829 cb.cb_target = snap->zfs_name; 3830 cb.cb_create = zfs_prop_get_int(snap, ZFS_PROP_CREATETXG); 3831 (void) zfs_iter_snapshots(zhp, B_FALSE, rollback_destroy, &cb); 3832 (void) zfs_iter_bookmarks(zhp, rollback_destroy, &cb); 3833 3834 if (cb.cb_error) 3835 return (-1); 3836 3837 /* 3838 * Now that we have verified that the snapshot is the latest, 3839 * rollback to the given snapshot. 3840 */ 3841 3842 if (zhp->zfs_type == ZFS_TYPE_VOLUME) { 3843 if (zfs_which_resv_prop(zhp, &resv_prop) < 0) 3844 return (-1); 3845 old_volsize = zfs_prop_get_int(zhp, ZFS_PROP_VOLSIZE); 3846 restore_resv = 3847 (old_volsize == zfs_prop_get_int(zhp, resv_prop)); 3848 } 3849 3850 /* 3851 * We rely on zfs_iter_children() to verify that there are no 3852 * newer snapshots for the given dataset. Therefore, we can 3853 * simply pass the name on to the ioctl() call. There is still 3854 * an unlikely race condition where the user has taken a 3855 * snapshot since we verified that this was the most recent. 3856 */ 3857 err = lzc_rollback(zhp->zfs_name, NULL, 0); 3858 if (err != 0) { 3859 (void) zfs_standard_error_fmt(zhp->zfs_hdl, errno, 3860 dgettext(TEXT_DOMAIN, "cannot rollback '%s'"), 3861 zhp->zfs_name); 3862 return (err); 3863 } 3864 3865 /* 3866 * For volumes, if the pre-rollback volsize matched the pre- 3867 * rollback reservation and the volsize has changed then set 3868 * the reservation property to the post-rollback volsize. 3869 * Make a new handle since the rollback closed the dataset. 3870 */ 3871 if ((zhp->zfs_type == ZFS_TYPE_VOLUME) && 3872 (zhp = make_dataset_handle(zhp->zfs_hdl, zhp->zfs_name))) { 3873 if (restore_resv) { 3874 new_volsize = zfs_prop_get_int(zhp, ZFS_PROP_VOLSIZE); 3875 if (old_volsize != new_volsize) 3876 err = zfs_prop_set_int(zhp, resv_prop, 3877 new_volsize); 3878 } 3879 zfs_close(zhp); 3880 } 3881 return (err); 3882} 3883 3884/* 3885 * Renames the given dataset. 3886 */ 3887int 3888zfs_rename(zfs_handle_t *zhp, const char *source, const char *target, 3889 renameflags_t flags) 3890{ 3891 int ret; 3892 zfs_cmd_t zc = { 0 }; 3893 char *delim; 3894 prop_changelist_t *cl = NULL; 3895 zfs_handle_t *zhrp = NULL; 3896 char *parentname = NULL; 3897 char parent[ZFS_MAXNAMELEN]; 3898 char property[ZFS_MAXPROPLEN]; 3899 libzfs_handle_t *hdl = zhp->zfs_hdl; 3900 char errbuf[1024]; 3901 3902 /* if we have the same exact name, just return success */ 3903 if (strcmp(zhp->zfs_name, target) == 0) 3904 return (0); 3905 3906 (void) snprintf(errbuf, sizeof (errbuf), dgettext(TEXT_DOMAIN, 3907 "cannot rename to '%s'"), target); 3908 3909 if (source != NULL) { 3910 /* 3911 * This is recursive snapshots rename, put snapshot name 3912 * (that might not exist) into zfs_name. 3913 */ 3914 assert(flags.recurse); 3915 3916 (void) strlcat(zhp->zfs_name, "@", sizeof(zhp->zfs_name)); 3917 (void) strlcat(zhp->zfs_name, source, sizeof(zhp->zfs_name)); 3918 zhp->zfs_type = ZFS_TYPE_SNAPSHOT; 3919 } 3920 3921 /* 3922 * Make sure the target name is valid 3923 */ 3924 if (zhp->zfs_type == ZFS_TYPE_SNAPSHOT) { 3925 if ((strchr(target, '@') == NULL) || 3926 *target == '@') { 3927 /* 3928 * Snapshot target name is abbreviated, 3929 * reconstruct full dataset name 3930 */ 3931 (void) strlcpy(parent, zhp->zfs_name, 3932 sizeof (parent)); 3933 delim = strchr(parent, '@'); 3934 if (strchr(target, '@') == NULL) 3935 *(++delim) = '\0'; 3936 else 3937 *delim = '\0'; 3938 (void) strlcat(parent, target, sizeof (parent)); 3939 target = parent; 3940 } else { 3941 /* 3942 * Make sure we're renaming within the same dataset. 3943 */ 3944 delim = strchr(target, '@'); 3945 if (strncmp(zhp->zfs_name, target, delim - target) 3946 != 0 || zhp->zfs_name[delim - target] != '@') { 3947 zfs_error_aux(hdl, dgettext(TEXT_DOMAIN, 3948 "snapshots must be part of same " 3949 "dataset")); 3950 return (zfs_error(hdl, EZFS_CROSSTARGET, 3951 errbuf)); 3952 } 3953 } 3954 if (!zfs_validate_name(hdl, target, zhp->zfs_type, B_TRUE)) 3955 return (zfs_error(hdl, EZFS_INVALIDNAME, errbuf)); 3956 } else { 3957 if (flags.recurse) { 3958 zfs_error_aux(hdl, dgettext(TEXT_DOMAIN, 3959 "recursive rename must be a snapshot")); 3960 return (zfs_error(hdl, EZFS_BADTYPE, errbuf)); 3961 } 3962 3963 if (!zfs_validate_name(hdl, target, zhp->zfs_type, B_TRUE)) 3964 return (zfs_error(hdl, EZFS_INVALIDNAME, errbuf)); 3965 3966 /* validate parents */ 3967 if (check_parents(hdl, target, NULL, B_FALSE, NULL) != 0) 3968 return (-1); 3969 3970 /* make sure we're in the same pool */ 3971 verify((delim = strchr(target, '/')) != NULL); 3972 if (strncmp(zhp->zfs_name, target, delim - target) != 0 || 3973 zhp->zfs_name[delim - target] != '/') { 3974 zfs_error_aux(hdl, dgettext(TEXT_DOMAIN, 3975 "datasets must be within same pool")); 3976 return (zfs_error(hdl, EZFS_CROSSTARGET, errbuf)); 3977 } 3978 3979 /* new name cannot be a child of the current dataset name */ 3980 if (is_descendant(zhp->zfs_name, target)) { 3981 zfs_error_aux(hdl, dgettext(TEXT_DOMAIN, 3982 "New dataset name cannot be a descendant of " 3983 "current dataset name")); 3984 return (zfs_error(hdl, EZFS_INVALIDNAME, errbuf)); 3985 } 3986 } 3987 3988 (void) snprintf(errbuf, sizeof (errbuf), 3989 dgettext(TEXT_DOMAIN, "cannot rename '%s'"), zhp->zfs_name); 3990 3991 if (getzoneid() == GLOBAL_ZONEID && 3992 zfs_prop_get_int(zhp, ZFS_PROP_ZONED)) { 3993 zfs_error_aux(hdl, dgettext(TEXT_DOMAIN, 3994 "dataset is used in a non-global zone")); 3995 return (zfs_error(hdl, EZFS_ZONED, errbuf)); 3996 } 3997 3998 /* 3999 * Avoid unmounting file systems with mountpoint property set to 4000 * 'legacy' or 'none' even if -u option is not given. 4001 */ 4002 if (zhp->zfs_type == ZFS_TYPE_FILESYSTEM && 4003 !flags.recurse && !flags.nounmount && 4004 zfs_prop_get(zhp, ZFS_PROP_MOUNTPOINT, property, 4005 sizeof (property), NULL, NULL, 0, B_FALSE) == 0 && 4006 (strcmp(property, "legacy") == 0 || 4007 strcmp(property, "none") == 0)) { 4008 flags.nounmount = B_TRUE; 4009 } 4010 if (flags.recurse) { 4011 4012 parentname = zfs_strdup(zhp->zfs_hdl, zhp->zfs_name); 4013 if (parentname == NULL) { 4014 ret = -1; 4015 goto error; 4016 } 4017 delim = strchr(parentname, '@'); 4018 *delim = '\0'; 4019 zhrp = zfs_open(zhp->zfs_hdl, parentname, ZFS_TYPE_DATASET); 4020 if (zhrp == NULL) { 4021 ret = -1; 4022 goto error; 4023 } 4024 } else if (zhp->zfs_type != ZFS_TYPE_SNAPSHOT) { 4025 if ((cl = changelist_gather(zhp, ZFS_PROP_NAME, 4026 flags.nounmount ? CL_GATHER_DONT_UNMOUNT : 0, 4027 flags.forceunmount ? MS_FORCE : 0)) == NULL) { 4028 return (-1); 4029 } 4030 4031 if (changelist_haszonedchild(cl)) { 4032 zfs_error_aux(hdl, dgettext(TEXT_DOMAIN, 4033 "child dataset with inherited mountpoint is used " 4034 "in a non-global zone")); 4035 (void) zfs_error(hdl, EZFS_ZONED, errbuf); 4036 goto error; 4037 } 4038 4039 if ((ret = changelist_prefix(cl)) != 0) 4040 goto error; 4041 } 4042 4043 if (ZFS_IS_VOLUME(zhp)) 4044 zc.zc_objset_type = DMU_OST_ZVOL; 4045 else 4046 zc.zc_objset_type = DMU_OST_ZFS; 4047 4048 (void) strlcpy(zc.zc_name, zhp->zfs_name, sizeof (zc.zc_name)); 4049 (void) strlcpy(zc.zc_value, target, sizeof (zc.zc_value)); 4050 4051 zc.zc_cookie = flags.recurse ? 1 : 0; 4052 if (flags.nounmount) 4053 zc.zc_cookie |= 2; 4054 4055 if ((ret = zfs_ioctl(zhp->zfs_hdl, ZFS_IOC_RENAME, &zc)) != 0) { 4056 /* 4057 * if it was recursive, the one that actually failed will 4058 * be in zc.zc_name 4059 */ 4060 (void) snprintf(errbuf, sizeof (errbuf), dgettext(TEXT_DOMAIN, 4061 "cannot rename '%s'"), zc.zc_name); 4062 4063 if (flags.recurse && errno == EEXIST) { 4064 zfs_error_aux(hdl, dgettext(TEXT_DOMAIN, 4065 "a child dataset already has a snapshot " 4066 "with the new name")); 4067 (void) zfs_error(hdl, EZFS_EXISTS, errbuf); 4068 } else { 4069 (void) zfs_standard_error(zhp->zfs_hdl, errno, errbuf); 4070 } 4071 4072 /* 4073 * On failure, we still want to remount any filesystems that 4074 * were previously mounted, so we don't alter the system state. 4075 */ 4076 if (cl != NULL) 4077 (void) changelist_postfix(cl); 4078 } else { 4079 if (cl != NULL) { 4080 changelist_rename(cl, zfs_get_name(zhp), target); 4081 ret = changelist_postfix(cl); 4082 } 4083 } 4084 4085error: 4086 if (parentname != NULL) { 4087 free(parentname); 4088 } 4089 if (zhrp != NULL) { 4090 zfs_close(zhrp); 4091 } 4092 if (cl != NULL) { 4093 changelist_free(cl); 4094 } 4095 return (ret); 4096} 4097 4098nvlist_t * 4099zfs_get_user_props(zfs_handle_t *zhp) 4100{ 4101 return (zhp->zfs_user_props); 4102} 4103 4104nvlist_t * 4105zfs_get_recvd_props(zfs_handle_t *zhp) 4106{ 4107 if (zhp->zfs_recvd_props == NULL) 4108 if (get_recvd_props_ioctl(zhp) != 0) 4109 return (NULL); 4110 return (zhp->zfs_recvd_props); 4111} 4112 4113/* 4114 * This function is used by 'zfs list' to determine the exact set of columns to 4115 * display, and their maximum widths. This does two main things: 4116 * 4117 * - If this is a list of all properties, then expand the list to include 4118 * all native properties, and set a flag so that for each dataset we look 4119 * for new unique user properties and add them to the list. 4120 * 4121 * - For non fixed-width properties, keep track of the maximum width seen 4122 * so that we can size the column appropriately. If the user has 4123 * requested received property values, we also need to compute the width 4124 * of the RECEIVED column. 4125 */ 4126int 4127zfs_expand_proplist(zfs_handle_t *zhp, zprop_list_t **plp, boolean_t received, 4128 boolean_t literal) 4129{ 4130 libzfs_handle_t *hdl = zhp->zfs_hdl; 4131 zprop_list_t *entry; 4132 zprop_list_t **last, **start; 4133 nvlist_t *userprops, *propval; 4134 nvpair_t *elem; 4135 char *strval; 4136 char buf[ZFS_MAXPROPLEN]; 4137 4138 if (zprop_expand_list(hdl, plp, ZFS_TYPE_DATASET) != 0) 4139 return (-1); 4140 4141 userprops = zfs_get_user_props(zhp); 4142 4143 entry = *plp; 4144 if (entry->pl_all && nvlist_next_nvpair(userprops, NULL) != NULL) { 4145 /* 4146 * Go through and add any user properties as necessary. We 4147 * start by incrementing our list pointer to the first 4148 * non-native property. 4149 */ 4150 start = plp; 4151 while (*start != NULL) { 4152 if ((*start)->pl_prop == ZPROP_INVAL) 4153 break; 4154 start = &(*start)->pl_next; 4155 } 4156 4157 elem = NULL; 4158 while ((elem = nvlist_next_nvpair(userprops, elem)) != NULL) { 4159 /* 4160 * See if we've already found this property in our list. 4161 */ 4162 for (last = start; *last != NULL; 4163 last = &(*last)->pl_next) { 4164 if (strcmp((*last)->pl_user_prop, 4165 nvpair_name(elem)) == 0) 4166 break; 4167 } 4168 4169 if (*last == NULL) { 4170 if ((entry = zfs_alloc(hdl, 4171 sizeof (zprop_list_t))) == NULL || 4172 ((entry->pl_user_prop = zfs_strdup(hdl, 4173 nvpair_name(elem)))) == NULL) { 4174 free(entry); 4175 return (-1); 4176 } 4177 4178 entry->pl_prop = ZPROP_INVAL; 4179 entry->pl_width = strlen(nvpair_name(elem)); 4180 entry->pl_all = B_TRUE; 4181 *last = entry; 4182 } 4183 } 4184 } 4185 4186 /* 4187 * Now go through and check the width of any non-fixed columns 4188 */ 4189 for (entry = *plp; entry != NULL; entry = entry->pl_next) { 4190 if (entry->pl_fixed && !literal) 4191 continue; 4192 4193 if (entry->pl_prop != ZPROP_INVAL) { 4194 if (zfs_prop_get(zhp, entry->pl_prop, 4195 buf, sizeof (buf), NULL, NULL, 0, literal) == 0) { 4196 if (strlen(buf) > entry->pl_width) 4197 entry->pl_width = strlen(buf); 4198 } 4199 if (received && zfs_prop_get_recvd(zhp, 4200 zfs_prop_to_name(entry->pl_prop), 4201 buf, sizeof (buf), literal) == 0) 4202 if (strlen(buf) > entry->pl_recvd_width) 4203 entry->pl_recvd_width = strlen(buf); 4204 } else { 4205 if (nvlist_lookup_nvlist(userprops, entry->pl_user_prop, 4206 &propval) == 0) { 4207 verify(nvlist_lookup_string(propval, 4208 ZPROP_VALUE, &strval) == 0); 4209 if (strlen(strval) > entry->pl_width) 4210 entry->pl_width = strlen(strval); 4211 } 4212 if (received && zfs_prop_get_recvd(zhp, 4213 entry->pl_user_prop, 4214 buf, sizeof (buf), literal) == 0) 4215 if (strlen(buf) > entry->pl_recvd_width) 4216 entry->pl_recvd_width = strlen(buf); 4217 } 4218 } 4219 4220 return (0); 4221} 4222 4223int 4224zfs_deleg_share_nfs(libzfs_handle_t *hdl, char *dataset, char *path, 4225 char *resource, void *export, void *sharetab, 4226 int sharemax, zfs_share_op_t operation) 4227{ 4228 zfs_cmd_t zc = { 0 }; 4229 int error; 4230 4231 (void) strlcpy(zc.zc_name, dataset, sizeof (zc.zc_name)); 4232 (void) strlcpy(zc.zc_value, path, sizeof (zc.zc_value)); 4233 if (resource) 4234 (void) strlcpy(zc.zc_string, resource, sizeof (zc.zc_string)); 4235 zc.zc_share.z_sharedata = (uint64_t)(uintptr_t)sharetab; 4236 zc.zc_share.z_exportdata = (uint64_t)(uintptr_t)export; 4237 zc.zc_share.z_sharetype = operation; 4238 zc.zc_share.z_sharemax = sharemax; 4239 error = ioctl(hdl->libzfs_fd, ZFS_IOC_SHARE, &zc); 4240 return (error); 4241} 4242 4243void 4244zfs_prune_proplist(zfs_handle_t *zhp, uint8_t *props) 4245{ 4246 nvpair_t *curr; 4247 4248 /* 4249 * Keep a reference to the props-table against which we prune the 4250 * properties. 4251 */ 4252 zhp->zfs_props_table = props; 4253 4254 curr = nvlist_next_nvpair(zhp->zfs_props, NULL); 4255 4256 while (curr) { 4257 zfs_prop_t zfs_prop = zfs_name_to_prop(nvpair_name(curr)); 4258 nvpair_t *next = nvlist_next_nvpair(zhp->zfs_props, curr); 4259 4260 /* 4261 * User properties will result in ZPROP_INVAL, and since we 4262 * only know how to prune standard ZFS properties, we always 4263 * leave these in the list. This can also happen if we 4264 * encounter an unknown DSL property (when running older 4265 * software, for example). 4266 */ 4267 if (zfs_prop != ZPROP_INVAL && props[zfs_prop] == B_FALSE) 4268 (void) nvlist_remove(zhp->zfs_props, 4269 nvpair_name(curr), nvpair_type(curr)); 4270 curr = next; 4271 } 4272} 4273 4274#ifdef illumos 4275static int 4276zfs_smb_acl_mgmt(libzfs_handle_t *hdl, char *dataset, char *path, 4277 zfs_smb_acl_op_t cmd, char *resource1, char *resource2) 4278{ 4279 zfs_cmd_t zc = { 0 }; 4280 nvlist_t *nvlist = NULL; 4281 int error; 4282 4283 (void) strlcpy(zc.zc_name, dataset, sizeof (zc.zc_name)); 4284 (void) strlcpy(zc.zc_value, path, sizeof (zc.zc_value)); 4285 zc.zc_cookie = (uint64_t)cmd; 4286 4287 if (cmd == ZFS_SMB_ACL_RENAME) { 4288 if (nvlist_alloc(&nvlist, NV_UNIQUE_NAME, 0) != 0) { 4289 (void) no_memory(hdl); 4290 return (0); 4291 } 4292 } 4293 4294 switch (cmd) { 4295 case ZFS_SMB_ACL_ADD: 4296 case ZFS_SMB_ACL_REMOVE: 4297 (void) strlcpy(zc.zc_string, resource1, sizeof (zc.zc_string)); 4298 break; 4299 case ZFS_SMB_ACL_RENAME: 4300 if (nvlist_add_string(nvlist, ZFS_SMB_ACL_SRC, 4301 resource1) != 0) { 4302 (void) no_memory(hdl); 4303 return (-1); 4304 } 4305 if (nvlist_add_string(nvlist, ZFS_SMB_ACL_TARGET, 4306 resource2) != 0) { 4307 (void) no_memory(hdl); 4308 return (-1); 4309 } 4310 if (zcmd_write_src_nvlist(hdl, &zc, nvlist) != 0) { 4311 nvlist_free(nvlist); 4312 return (-1); 4313 } 4314 break; 4315 case ZFS_SMB_ACL_PURGE: 4316 break; 4317 default: 4318 return (-1); 4319 } 4320 error = ioctl(hdl->libzfs_fd, ZFS_IOC_SMB_ACL, &zc); 4321 if (nvlist) 4322 nvlist_free(nvlist); 4323 return (error); 4324} 4325 4326int 4327zfs_smb_acl_add(libzfs_handle_t *hdl, char *dataset, 4328 char *path, char *resource) 4329{ 4330 return (zfs_smb_acl_mgmt(hdl, dataset, path, ZFS_SMB_ACL_ADD, 4331 resource, NULL)); 4332} 4333 4334int 4335zfs_smb_acl_remove(libzfs_handle_t *hdl, char *dataset, 4336 char *path, char *resource) 4337{ 4338 return (zfs_smb_acl_mgmt(hdl, dataset, path, ZFS_SMB_ACL_REMOVE, 4339 resource, NULL)); 4340} 4341 4342int 4343zfs_smb_acl_purge(libzfs_handle_t *hdl, char *dataset, char *path) 4344{ 4345 return (zfs_smb_acl_mgmt(hdl, dataset, path, ZFS_SMB_ACL_PURGE, 4346 NULL, NULL)); 4347} 4348 4349int 4350zfs_smb_acl_rename(libzfs_handle_t *hdl, char *dataset, char *path, 4351 char *oldname, char *newname) 4352{ 4353 return (zfs_smb_acl_mgmt(hdl, dataset, path, ZFS_SMB_ACL_RENAME, 4354 oldname, newname)); 4355} 4356#endif /* illumos */ 4357 4358int 4359zfs_userspace(zfs_handle_t *zhp, zfs_userquota_prop_t type, 4360 zfs_userspace_cb_t func, void *arg) 4361{ 4362 zfs_cmd_t zc = { 0 }; 4363 zfs_useracct_t buf[100]; 4364 libzfs_handle_t *hdl = zhp->zfs_hdl; 4365 int ret; 4366 4367 (void) strlcpy(zc.zc_name, zhp->zfs_name, sizeof (zc.zc_name)); 4368 4369 zc.zc_objset_type = type; 4370 zc.zc_nvlist_dst = (uintptr_t)buf; 4371 4372 for (;;) { 4373 zfs_useracct_t *zua = buf; 4374 4375 zc.zc_nvlist_dst_size = sizeof (buf); 4376 if (zfs_ioctl(hdl, ZFS_IOC_USERSPACE_MANY, &zc) != 0) { 4377 char errbuf[1024]; 4378 4379 (void) snprintf(errbuf, sizeof (errbuf), 4380 dgettext(TEXT_DOMAIN, 4381 "cannot get used/quota for %s"), zc.zc_name); 4382 return (zfs_standard_error_fmt(hdl, errno, errbuf)); 4383 } 4384 if (zc.zc_nvlist_dst_size == 0) 4385 break; 4386 4387 while (zc.zc_nvlist_dst_size > 0) { 4388 if ((ret = func(arg, zua->zu_domain, zua->zu_rid, 4389 zua->zu_space)) != 0) 4390 return (ret); 4391 zua++; 4392 zc.zc_nvlist_dst_size -= sizeof (zfs_useracct_t); 4393 } 4394 } 4395 4396 return (0); 4397} 4398 4399struct holdarg { 4400 nvlist_t *nvl; 4401 const char *snapname; 4402 const char *tag; 4403 boolean_t recursive; 4404 int error; 4405}; 4406 4407static int 4408zfs_hold_one(zfs_handle_t *zhp, void *arg) 4409{ 4410 struct holdarg *ha = arg; 4411 char name[ZFS_MAXNAMELEN]; 4412 int rv = 0; 4413 4414 (void) snprintf(name, sizeof (name), 4415 "%s@%s", zhp->zfs_name, ha->snapname); 4416 4417 if (lzc_exists(name)) 4418 fnvlist_add_string(ha->nvl, name, ha->tag); 4419 4420 if (ha->recursive) 4421 rv = zfs_iter_filesystems(zhp, zfs_hold_one, ha); 4422 zfs_close(zhp); 4423 return (rv); 4424} 4425 4426int 4427zfs_hold(zfs_handle_t *zhp, const char *snapname, const char *tag, 4428 boolean_t recursive, int cleanup_fd) 4429{ 4430 int ret; 4431 struct holdarg ha; 4432 4433 ha.nvl = fnvlist_alloc(); 4434 ha.snapname = snapname; 4435 ha.tag = tag; 4436 ha.recursive = recursive; 4437 (void) zfs_hold_one(zfs_handle_dup(zhp), &ha); 4438 4439 if (nvlist_empty(ha.nvl)) { 4440 char errbuf[1024]; 4441 4442 fnvlist_free(ha.nvl); 4443 ret = ENOENT; 4444 (void) snprintf(errbuf, sizeof (errbuf), 4445 dgettext(TEXT_DOMAIN, 4446 "cannot hold snapshot '%s@%s'"), 4447 zhp->zfs_name, snapname); 4448 (void) zfs_standard_error(zhp->zfs_hdl, ret, errbuf); 4449 return (ret); 4450 } 4451 4452 ret = zfs_hold_nvl(zhp, cleanup_fd, ha.nvl); 4453 fnvlist_free(ha.nvl); 4454 4455 return (ret); 4456} 4457 4458int 4459zfs_hold_nvl(zfs_handle_t *zhp, int cleanup_fd, nvlist_t *holds) 4460{ 4461 int ret; 4462 nvlist_t *errors; 4463 libzfs_handle_t *hdl = zhp->zfs_hdl; 4464 char errbuf[1024]; 4465 nvpair_t *elem; 4466 4467 errors = NULL; 4468 ret = lzc_hold(holds, cleanup_fd, &errors); 4469 4470 if (ret == 0) { 4471 /* There may be errors even in the success case. */ 4472 fnvlist_free(errors); 4473 return (0); 4474 } 4475 4476 if (nvlist_empty(errors)) { 4477 /* no hold-specific errors */ 4478 (void) snprintf(errbuf, sizeof (errbuf), 4479 dgettext(TEXT_DOMAIN, "cannot hold")); 4480 switch (ret) { 4481 case ENOTSUP: 4482 zfs_error_aux(hdl, dgettext(TEXT_DOMAIN, 4483 "pool must be upgraded")); 4484 (void) zfs_error(hdl, EZFS_BADVERSION, errbuf); 4485 break; 4486 case EINVAL: 4487 (void) zfs_error(hdl, EZFS_BADTYPE, errbuf); 4488 break; 4489 default: 4490 (void) zfs_standard_error(hdl, ret, errbuf); 4491 } 4492 } 4493 4494 for (elem = nvlist_next_nvpair(errors, NULL); 4495 elem != NULL; 4496 elem = nvlist_next_nvpair(errors, elem)) { 4497 (void) snprintf(errbuf, sizeof (errbuf), 4498 dgettext(TEXT_DOMAIN, 4499 "cannot hold snapshot '%s'"), nvpair_name(elem)); 4500 switch (fnvpair_value_int32(elem)) { 4501 case E2BIG: 4502 /* 4503 * Temporary tags wind up having the ds object id 4504 * prepended. So even if we passed the length check 4505 * above, it's still possible for the tag to wind 4506 * up being slightly too long. 4507 */ 4508 (void) zfs_error(hdl, EZFS_TAGTOOLONG, errbuf); 4509 break; 4510 case EINVAL: 4511 (void) zfs_error(hdl, EZFS_BADTYPE, errbuf); 4512 break; 4513 case EEXIST: 4514 (void) zfs_error(hdl, EZFS_REFTAG_HOLD, errbuf); 4515 break; 4516 default: 4517 (void) zfs_standard_error(hdl, 4518 fnvpair_value_int32(elem), errbuf); 4519 } 4520 } 4521 4522 fnvlist_free(errors); 4523 return (ret); 4524} 4525 4526static int 4527zfs_release_one(zfs_handle_t *zhp, void *arg) 4528{ 4529 struct holdarg *ha = arg; 4530 char name[ZFS_MAXNAMELEN]; 4531 int rv = 0; 4532 nvlist_t *existing_holds; 4533 4534 (void) snprintf(name, sizeof (name), 4535 "%s@%s", zhp->zfs_name, ha->snapname); 4536 4537 if (lzc_get_holds(name, &existing_holds) != 0) { 4538 ha->error = ENOENT; 4539 } else if (!nvlist_exists(existing_holds, ha->tag)) { 4540 ha->error = ESRCH; 4541 } else { 4542 nvlist_t *torelease = fnvlist_alloc(); 4543 fnvlist_add_boolean(torelease, ha->tag); 4544 fnvlist_add_nvlist(ha->nvl, name, torelease); 4545 fnvlist_free(torelease); 4546 } 4547 4548 if (ha->recursive) 4549 rv = zfs_iter_filesystems(zhp, zfs_release_one, ha); 4550 zfs_close(zhp); 4551 return (rv); 4552} 4553 4554int 4555zfs_release(zfs_handle_t *zhp, const char *snapname, const char *tag, 4556 boolean_t recursive) 4557{ 4558 int ret; 4559 struct holdarg ha; 4560 nvlist_t *errors = NULL; 4561 nvpair_t *elem; 4562 libzfs_handle_t *hdl = zhp->zfs_hdl; 4563 char errbuf[1024]; 4564 4565 ha.nvl = fnvlist_alloc(); 4566 ha.snapname = snapname; 4567 ha.tag = tag; 4568 ha.recursive = recursive; 4569 ha.error = 0; 4570 (void) zfs_release_one(zfs_handle_dup(zhp), &ha); 4571 4572 if (nvlist_empty(ha.nvl)) { 4573 fnvlist_free(ha.nvl); 4574 ret = ha.error; 4575 (void) snprintf(errbuf, sizeof (errbuf), 4576 dgettext(TEXT_DOMAIN, 4577 "cannot release hold from snapshot '%s@%s'"), 4578 zhp->zfs_name, snapname); 4579 if (ret == ESRCH) { 4580 (void) zfs_error(hdl, EZFS_REFTAG_RELE, errbuf); 4581 } else { 4582 (void) zfs_standard_error(hdl, ret, errbuf); 4583 } 4584 return (ret); 4585 } 4586 4587 ret = lzc_release(ha.nvl, &errors); 4588 fnvlist_free(ha.nvl); 4589 4590 if (ret == 0) { 4591 /* There may be errors even in the success case. */ 4592 fnvlist_free(errors); 4593 return (0); 4594 } 4595 4596 if (nvlist_empty(errors)) { 4597 /* no hold-specific errors */ 4598 (void) snprintf(errbuf, sizeof (errbuf), dgettext(TEXT_DOMAIN, 4599 "cannot release")); 4600 switch (errno) { 4601 case ENOTSUP: 4602 zfs_error_aux(hdl, dgettext(TEXT_DOMAIN, 4603 "pool must be upgraded")); 4604 (void) zfs_error(hdl, EZFS_BADVERSION, errbuf); 4605 break; 4606 default: 4607 (void) zfs_standard_error_fmt(hdl, errno, errbuf); 4608 } 4609 } 4610 4611 for (elem = nvlist_next_nvpair(errors, NULL); 4612 elem != NULL; 4613 elem = nvlist_next_nvpair(errors, elem)) { 4614 (void) snprintf(errbuf, sizeof (errbuf), 4615 dgettext(TEXT_DOMAIN, 4616 "cannot release hold from snapshot '%s'"), 4617 nvpair_name(elem)); 4618 switch (fnvpair_value_int32(elem)) { 4619 case ESRCH: 4620 (void) zfs_error(hdl, EZFS_REFTAG_RELE, errbuf); 4621 break; 4622 case EINVAL: 4623 (void) zfs_error(hdl, EZFS_BADTYPE, errbuf); 4624 break; 4625 default: 4626 (void) zfs_standard_error_fmt(hdl, 4627 fnvpair_value_int32(elem), errbuf); 4628 } 4629 } 4630 4631 fnvlist_free(errors); 4632 return (ret); 4633} 4634 4635int 4636zfs_get_fsacl(zfs_handle_t *zhp, nvlist_t **nvl) 4637{ 4638 zfs_cmd_t zc = { 0 }; 4639 libzfs_handle_t *hdl = zhp->zfs_hdl; 4640 int nvsz = 2048; 4641 void *nvbuf; 4642 int err = 0; 4643 char errbuf[1024]; 4644 4645 assert(zhp->zfs_type == ZFS_TYPE_VOLUME || 4646 zhp->zfs_type == ZFS_TYPE_FILESYSTEM); 4647 4648tryagain: 4649 4650 nvbuf = malloc(nvsz); 4651 if (nvbuf == NULL) { 4652 err = (zfs_error(hdl, EZFS_NOMEM, strerror(errno))); 4653 goto out; 4654 } 4655 4656 zc.zc_nvlist_dst_size = nvsz; 4657 zc.zc_nvlist_dst = (uintptr_t)nvbuf; 4658 4659 (void) strlcpy(zc.zc_name, zhp->zfs_name, ZFS_MAXNAMELEN); 4660 4661 if (ioctl(hdl->libzfs_fd, ZFS_IOC_GET_FSACL, &zc) != 0) { 4662 (void) snprintf(errbuf, sizeof (errbuf), 4663 dgettext(TEXT_DOMAIN, "cannot get permissions on '%s'"), 4664 zc.zc_name); 4665 switch (errno) { 4666 case ENOMEM: 4667 free(nvbuf); 4668 nvsz = zc.zc_nvlist_dst_size; 4669 goto tryagain; 4670 4671 case ENOTSUP: 4672 zfs_error_aux(hdl, dgettext(TEXT_DOMAIN, 4673 "pool must be upgraded")); 4674 err = zfs_error(hdl, EZFS_BADVERSION, errbuf); 4675 break; 4676 case EINVAL: 4677 err = zfs_error(hdl, EZFS_BADTYPE, errbuf); 4678 break; 4679 case ENOENT: 4680 err = zfs_error(hdl, EZFS_NOENT, errbuf); 4681 break; 4682 default: 4683 err = zfs_standard_error_fmt(hdl, errno, errbuf); 4684 break; 4685 } 4686 } else { 4687 /* success */ 4688 int rc = nvlist_unpack(nvbuf, zc.zc_nvlist_dst_size, nvl, 0); 4689 if (rc) { 4690 (void) snprintf(errbuf, sizeof (errbuf), dgettext( 4691 TEXT_DOMAIN, "cannot get permissions on '%s'"), 4692 zc.zc_name); 4693 err = zfs_standard_error_fmt(hdl, rc, errbuf); 4694 } 4695 } 4696 4697 free(nvbuf); 4698out: 4699 return (err); 4700} 4701 4702int 4703zfs_set_fsacl(zfs_handle_t *zhp, boolean_t un, nvlist_t *nvl) 4704{ 4705 zfs_cmd_t zc = { 0 }; 4706 libzfs_handle_t *hdl = zhp->zfs_hdl; 4707 char *nvbuf; 4708 char errbuf[1024]; 4709 size_t nvsz; 4710 int err; 4711 4712 assert(zhp->zfs_type == ZFS_TYPE_VOLUME || 4713 zhp->zfs_type == ZFS_TYPE_FILESYSTEM); 4714 4715 err = nvlist_size(nvl, &nvsz, NV_ENCODE_NATIVE); 4716 assert(err == 0); 4717 4718 nvbuf = malloc(nvsz); 4719 4720 err = nvlist_pack(nvl, &nvbuf, &nvsz, NV_ENCODE_NATIVE, 0); 4721 assert(err == 0); 4722 4723 zc.zc_nvlist_src_size = nvsz; 4724 zc.zc_nvlist_src = (uintptr_t)nvbuf; 4725 zc.zc_perm_action = un; 4726 4727 (void) strlcpy(zc.zc_name, zhp->zfs_name, sizeof (zc.zc_name)); 4728 4729 if (zfs_ioctl(hdl, ZFS_IOC_SET_FSACL, &zc) != 0) { 4730 (void) snprintf(errbuf, sizeof (errbuf), 4731 dgettext(TEXT_DOMAIN, "cannot set permissions on '%s'"), 4732 zc.zc_name); 4733 switch (errno) { 4734 case ENOTSUP: 4735 zfs_error_aux(hdl, dgettext(TEXT_DOMAIN, 4736 "pool must be upgraded")); 4737 err = zfs_error(hdl, EZFS_BADVERSION, errbuf); 4738 break; 4739 case EINVAL: 4740 err = zfs_error(hdl, EZFS_BADTYPE, errbuf); 4741 break; 4742 case ENOENT: 4743 err = zfs_error(hdl, EZFS_NOENT, errbuf); 4744 break; 4745 default: 4746 err = zfs_standard_error_fmt(hdl, errno, errbuf); 4747 break; 4748 } 4749 } 4750 4751 free(nvbuf); 4752 4753 return (err); 4754} 4755 4756int 4757zfs_get_holds(zfs_handle_t *zhp, nvlist_t **nvl) 4758{ 4759 int err; 4760 char errbuf[1024]; 4761 4762 err = lzc_get_holds(zhp->zfs_name, nvl); 4763 4764 if (err != 0) { 4765 libzfs_handle_t *hdl = zhp->zfs_hdl; 4766 4767 (void) snprintf(errbuf, sizeof (errbuf), 4768 dgettext(TEXT_DOMAIN, "cannot get holds for '%s'"), 4769 zhp->zfs_name); 4770 switch (err) { 4771 case ENOTSUP: 4772 zfs_error_aux(hdl, dgettext(TEXT_DOMAIN, 4773 "pool must be upgraded")); 4774 err = zfs_error(hdl, EZFS_BADVERSION, errbuf); 4775 break; 4776 case EINVAL: 4777 err = zfs_error(hdl, EZFS_BADTYPE, errbuf); 4778 break; 4779 case ENOENT: 4780 err = zfs_error(hdl, EZFS_NOENT, errbuf); 4781 break; 4782 default: 4783 err = zfs_standard_error_fmt(hdl, errno, errbuf); 4784 break; 4785 } 4786 } 4787 4788 return (err); 4789} 4790 4791/* 4792 * Convert the zvol's volume size to an appropriate reservation. 4793 * Note: If this routine is updated, it is necessary to update the ZFS test 4794 * suite's shell version in reservation.kshlib. 4795 */ 4796uint64_t 4797zvol_volsize_to_reservation(uint64_t volsize, nvlist_t *props) 4798{ 4799 uint64_t numdb; 4800 uint64_t nblocks, volblocksize; 4801 int ncopies; 4802 char *strval; 4803 4804 if (nvlist_lookup_string(props, 4805 zfs_prop_to_name(ZFS_PROP_COPIES), &strval) == 0) 4806 ncopies = atoi(strval); 4807 else 4808 ncopies = 1; 4809 if (nvlist_lookup_uint64(props, 4810 zfs_prop_to_name(ZFS_PROP_VOLBLOCKSIZE), 4811 &volblocksize) != 0) 4812 volblocksize = ZVOL_DEFAULT_BLOCKSIZE; 4813 nblocks = volsize/volblocksize; 4814 /* start with metadnode L0-L6 */ 4815 numdb = 7; 4816 /* calculate number of indirects */ 4817 while (nblocks > 1) { 4818 nblocks += DNODES_PER_LEVEL - 1; 4819 nblocks /= DNODES_PER_LEVEL; 4820 numdb += nblocks; 4821 } 4822 numdb *= MIN(SPA_DVAS_PER_BP, ncopies + 1); 4823 volsize *= ncopies; 4824 /* 4825 * this is exactly DN_MAX_INDBLKSHIFT when metadata isn't 4826 * compressed, but in practice they compress down to about 4827 * 1100 bytes 4828 */ 4829 numdb *= 1ULL << DN_MAX_INDBLKSHIFT; 4830 volsize += numdb; 4831 return (volsize); 4832} 4833 4834/* 4835 * Attach/detach the given filesystem to/from the given jail. 4836 */ 4837int 4838zfs_jail(zfs_handle_t *zhp, int jailid, int attach) 4839{ 4840 libzfs_handle_t *hdl = zhp->zfs_hdl; 4841 zfs_cmd_t zc = { 0 }; 4842 char errbuf[1024]; 4843 unsigned long cmd; 4844 int ret; 4845 4846 if (attach) { 4847 (void) snprintf(errbuf, sizeof (errbuf), 4848 dgettext(TEXT_DOMAIN, "cannot jail '%s'"), zhp->zfs_name); 4849 } else { 4850 (void) snprintf(errbuf, sizeof (errbuf), 4851 dgettext(TEXT_DOMAIN, "cannot unjail '%s'"), zhp->zfs_name); 4852 } 4853 4854 switch (zhp->zfs_type) { 4855 case ZFS_TYPE_VOLUME: 4856 zfs_error_aux(hdl, dgettext(TEXT_DOMAIN, 4857 "volumes can not be jailed")); 4858 return (zfs_error(hdl, EZFS_BADTYPE, errbuf)); 4859 case ZFS_TYPE_SNAPSHOT: 4860 zfs_error_aux(hdl, dgettext(TEXT_DOMAIN, 4861 "snapshots can not be jailed")); 4862 return (zfs_error(hdl, EZFS_BADTYPE, errbuf)); 4863 } 4864 assert(zhp->zfs_type == ZFS_TYPE_FILESYSTEM); 4865 4866 (void) strlcpy(zc.zc_name, zhp->zfs_name, sizeof (zc.zc_name)); 4867 zc.zc_objset_type = DMU_OST_ZFS; 4868 zc.zc_jailid = jailid; 4869 4870 cmd = attach ? ZFS_IOC_JAIL : ZFS_IOC_UNJAIL; 4871 if ((ret = ioctl(hdl->libzfs_fd, cmd, &zc)) != 0) 4872 zfs_standard_error(hdl, errno, errbuf); 4873 4874 return (ret); 4875} 4876